• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    SENSOR CYLINDER FOR USE IN A MIXING PRESS, SYSTEM FOR CALCULATING AND DISPLAYING A PRESSURE PROFILE FOR A MIXING PRESS AND METHOD FOR DETECTING AND REMOVING THE ROTATIONAL VARIABILITY EFFECTS OF A CILORING PRESSURE OF A CINDERING CILOR OF A CILOR . Multiple groups of sensors are circumferentially spaced apart in each transverse position along a sensor cylinder of a die press to measure and cancel or almost cancel the effects of rotational variability that may be acting on the sensor cylinder. The strategically placed sensors are designed to measure the pressure being placed against the web being advanced through the die press. The average of measurements from multiple sensors spaced circumferentially apart provides a good cancellation of any rotational variability that can be found in a transverse position on the sensor cylinder. In this way, a more accurate measurement of the wedge pressure profile can be obtained and better adjustments produced to reduce the wedge pressure profile variability. In addition, the coining variability profile can be used as a predictor of cover or bearing failures, resonant frequencies and other anomalies (...).
    公开号:BR112015022351B1
    申请号:R112015022351-6
    申请日:2014-02-13
    公开日:2020-11-17
    发明作者:Kerry D. Figiel
    申请人:International Paper Company；
    IPC主号:
    专利说明:

    Prior art
    [001] The present invention generally relates to coinage presses used to exert pressing forces on mobile webs to form, for example, paper, textile material, plastic sheet and other related materials. In particular, the present invention is directed to methods and apparatus for measuring and removing the effects of rotational variability from the wedge pressure profile of wedge presses which use sensors embedded in coated cylinders. Although prior art presses that use cylinders with built-in sensors may be able to detect pressure variations along the length of the cylinder, these same built-in sensors may not be able to measure and compensate for the rotational variability that can be generated by high speed rotation of the coated cylinder. The present invention provides a method and apparatus for measuring and removing rotational variability of the die pressure profile of the coated cylinder in order to obtain a more accurate die pressure profile being developed in the die region.
    [002] Die-cast cylinders are used in a wide number of continuous process industries including, for example, paper production, steel production, calendering and plastic printing. The characteristics of wedge cylinders are particularly important in paper production. In the paper production process, many stages are required to transform raw material from the inbox into paper. The initial stage is the deposition of the raw material from the inbox, commonly referred to as "white water", on a paper machine forming fabric, commonly referred to as a "thread". With deposition, a portion of the white water seeps through the interstices of the threads of the forming fabric leaving a mixture of liquid and fiber over it. This mixture, referred to in the industry as a "weft", can be treated by equipment that additionally reduces the amount of moisture content of the finished product. The fabric thread continuously supports the fibrous web and advances it through the various dewatering equipment that effectively remove the desired amount of liquid from the web.
    [003] One of the dewatering stages is carried out by passing the weft through a pair or more of rotating cylinders that form a wedge press or series of them, during which liquid is expelled from the weft via pressure being applied by the rotating cylinders. The cylinders, by exerting force on the weft and fabric thread, will cause some liquid to be pressed from the fibrous weft. The web can then be advanced to other presses or drying equipment that further reduce the amount of moisture in the web. The "stamping region" is the contact region between two adjacent rollers through which the paper web passes. One cylinder of the die press is typically a cylinder of hard steel while the other is constructed of a metallic shell covered by a polymeric cover. However, in some applications, both cylinders can be covered. The amount of liquid to be removed by pressing the web is dependent on the amount of pressure being placed on the web as it passes through the die region. The last cylinders in the process on the machine's calender are used to control the gauge and other sheet characteristics. Coated cylinders are sometimes used in the calender. The characteristics of the rollers are particularly important in the production of paper since the amount of pressure applied to the web during the pressing stage can be critical to achieve uniform sheet characteristics.
    [004] A common problem associated with such cylinders may be the lack of uniformity in the pressure being distributed along the working length of the cylinder. The pressure that is exerted by the cylinders of the die press is often referred to as the "die pressure". The amount of wedge pressure applied to the web and the size of the wedge can be important to achieve uniform sheet characteristics. Even the pressing pressure along the cylinder is important in the production of paper and contributes to the moisture content, caliber, strength and surface appearance of the sheet. For example, a lack of uniformity in die pressure can often result in poor quality paper. Excessive wedging pressure can cause crushing or displacement of fibers as well as holes in the resulting paper product. Improved loading of the die may lead to higher productivity through higher machine speeds and shorter interruptions (unplanned downtime).
    [005] Conventional cylinders for use in a press section can be formed from one or more layers of material. Deflection of the cylinder, commonly due to bending or wedging load, can be a source of unequal pressure distribution and / or wedging width. Worn cylinder covers can also introduce pressure variations. Cylinders have been developed which monitor and compensate for these deflections. These cylinders usually have a floating cover that surrounds a stationary core. Underneath the floating liner are movable surfaces that can be actuated to compensate for irregular distribution of wedging pressure.
    [006] The previously known techniques for determining the presence of such discrepancies in the wedging pressure required the operator to stop the cylinder and place a long piece of carbon paper or pressure-sensitive film on the wedging. This procedure is known as taking an "impression of the coinage". Subsequent techniques for coinage prints involve using mylar with detection element to electronically record pressures through the coinage. These procedures, although useful, cannot be used while the die press is in operation. In addition, temperature, cylinder speed and other related changes that affect the uniformity of the die pressure cannot be taken into account.
    [007] Consequently, coinage presses have been developed over the years to allow the operator to measure the coinage pressure while the cylinders are being rotated. Such a coinage press is described in U.S. Patent No. 4,509,237. This wedge press uses a cylinder that has position sensors to determine an irregular arrangement of the cylinder cover. The signals from the sensors activate support or pressure elements under the cylinder cover, to equalize any irregular positioning that may exist due to pressure variations. The pressure elements comprise conventional hydrostatic support bearings that are supplied by a pressurized oil supply line. The cylinder described in U.S. Patent No. 4,898,012 similarly attempts to address this problem by incorporating sensors in the cylinder to determine the die pressure profile of a press die. Yet another coinage press is described in U.S. Patent No. 4,729,153. This controlled deflection cylinder additionally has sensors to regulate the surface temperature of the cylinder in a narrow range across the face of the cylinder. Other controlled deflection cylinders, such as that described in U.S. Patent No. 4,233,011, depend on the thermal expansion properties of the cylinder material, to achieve correct cylinder flexion.
    [008] Additional advances in coining press technology included the development of wireless sensors that are embedded in the linings of cylinder press sensor sensors as disclosed in the patents in 7,225,688; 7,305,894; 7,392,715; 7,581,456 and 7,963,180 for Moore et al. These patents show the use of numerous sensors embedded in the cylinder cover, commonly referred to as a "sensor cylinder", that send pressure signals wirelessly to a remote signal receiver. U.S. Patent No. 5,699,729 to Moschel discloses the use of a helical sensor to detect pressure displayed on a cylinder. Paper machine equipment manufacturers and suppliers such as Voith GmbH, Xerium Technologies, Inc. and its subsidiary Stowe have developed coinage presses using sensors embedded within the sensor cylinder cover. These die-casting presses generally use a plurality of sensors connected in a single spiral wound around the cylinder cover in a single revolution to form a helical pattern. An individual sensor is designed to extend into the die region of the die press as the sensor cylinder rotates. In this way, the helical pattern of the sensors provides a different pressure signal along the transverse region of the wedge press to provide the operator with valuable information regarding the pressure distribution across the coinage region and, therefore, the pressure being applied to the moving weft as it passes through the coinage region.
    [009] The control instrumentation associated with the coinage press can provide a good representation of the transversal coinage pressure (commonly referred to as the "coinage pressure profile" or just "coinage profile") and will allow the operator to correct the distribution of coining pressure should it arise. The control instruments usually provide a graphic display in real time of the die pressure profile on a screen or computer monitor. The wedge profile is a compilation of pressure data that is being received from the sensors located on the sensor cylinder. It usually shows the pressure signal graphically in terms of the transverse position in the sensor cylinder. The y axis usually designates pressure in pounds per linear inch while the x axis designates the transverse position on the cylinder.
    [0010] Although a single line of sensors in the sensor cylinder can provide a reasonably good representation of cross-sectional pressure variability, these same sensors may not correctly account for the variability of pressure across the region of coining caused by high speed rotation of the sensor cylinder. The dynamics of a cylinder / roller rotating at a high angular speed (high RPMs) can cause slight changes in the pressure produced by the cylinder / roller that are not necessarily detectable when the cylinder / roller is at rest or spinning at a low speed. Such dynamic changes may be the result of centrifugal forces acting on the cylinder / roller, flexing the cylinder, balancing the cylinder, eccentric shaft assembly or non-round cylinders and may possibly be influenced by environmental factors. This dynamic behavior of a typical cylinder / roller rotating at high speed is often characterized by the development of an unbalance and variation in flexural stiffness. Such variations across the cylinder / roller are often referred to as rotational variability. Unbalance can be seen as a component of vibration at certain rotational frequencies and can also cause unwanted flexing of the flexible cylinder / roller as a function of rotational speed. Since the lengths of the sensing cylinders used in papermaking can be quite long, the imbalance in the rotating cylinders can present a serious problem for the papermaker since a less than uneven pressure profile can be created and displayed control equipment. Any unwanted flexing of the sensor cylinder can, of course, change the amount of pressure being exerted on the web as it travels through the die roller. Again, since uniform wedging pressure is highly desired during papermaking, it would be highly beneficial to correctly display the wedging pressure profile since any corrections to be made to the rotating cylinder based on an imprecise wedging pressure profile are certainly would exacerbate the problem. A single sensor located at an individual transverse position on the sensor cylinder may not be able to compensate for the effect of rotational variability at that sensor position and may provide less than accurate pressure readings. There are three primary measurements of variability. The true coining pressure profile has variability that can be called transverse variability since it is the average pressure variability by transverse position through the coining. Each sensor in a single line of sensors may have some variability associated with it that can be calculated as data is collected at high speed. This particular variability profile represents the variability of high-speed measurements at each position in the single line of sensors. This variability contains the variability of other equipment in the papermaking process including the rotational variability of the wedge cylinder with the sensor cylinder. The third variability profile is the variability of the coining profile of multiple sensors at each transverse position in the cylinder. This variability represents the "rotational variability" of the sensor cylinder as it rotates through its plurality of detection positions.
    [0011] One of the problems with rotational variability is the creation of "high points" and "low points" in various locations along the sensor cylinder. A single sensor located in a transverse position where a high point or a low point is found would provide the processing equipment with an inaccurate pressure reading being developed at that location. This is due to the fact that the overall pressure that is developed at the sensor site as the cylinder rotates fully through a complete revolution will be lower than the measured "high point" reading. Consequently, a coining pressure profile that is based on reading a sensor located at a high or low point will not be indicative of the average pressure being developed at that location. The processing equipment, depending on this single inaccurate reading, will calculate and display a wedge pressure profile that is at least partially inaccurate. If a number of unique sensors are located at numerous high or low points, then the processing equipment will exhibit a coining pressure profile that has numerous inaccuracies. The operator of the papermaking machine may not even be aware that the processing system is exhibiting an imprecise stamping pressure profile. In addition, attempts to correct the sensor cylinder based on an imprecise stamping pressure profile can lead to even greater inaccuracies.
    [0012] Therefore, it would be beneficial if the manufacturer could detect and measure any rotational variability along the length of the coated cylinder of a wedge press and compensate it when a wedge pressure profile in real time is being calculated and displayed. The present invention provides a better measurement of the true coining pressure profile and is also capable of providing variability of the previously measured coining profile of rotation (rotational variability). In addition, certain arrangements of detection elements will provide information on the wear of the cover. Compensation for any rotational variability must produce a wedge pressure profile that is a more accurate representation of the pressure being developed across the wedge region of the press. The present invention satisfies these and other needs. Summary of the invention
    [0013] The present invention provides an apparatus and methods for precisely detecting, measuring and at least partially removing any effects of rotational variability from a coated cylinder (also referred to as a "sensor cylinder") used in coinage presses. The present invention compensates for this effect by allowing an accurate display of the die pressure profile to be calculated and displayed. The present invention therefore provides the machine operator with a more accurate representation of the actual pressure distribution through the die press. The present invention can be used in collaboration with correction instrumentation that can eliminate or compensate for pressure variability in places through the press sensor cylinder. The data obtained from the sensor array along the sensor cylinder allows the calculation and display of a rotational variability profile that can provide the operator with additional information in real time regarding the dynamics of pressure readings to obtain a pressure profile more precise coinage. The present invention can compensate for the rotational variability in the detection mechanism by calculating, for example, an average pressure value in each transverse position ("CD") along the sensor cylinder. The present invention can also calculate and obtain a more accurate coining pressure profile using other models, such as curve fitting.
    [0014] The present invention uses multiple sensors spaced circumferentially in various transverse positions along the sensor cylinder to cancel the effects of rotational variability that may or may not be acting on the sensor cylinder. These strategically placed sensors are designed to measure the pressure being placed against the web being advanced through the die press. Previous work has shown that cylinder rotational variability occurs mainly at 1 times the rotational frequency of the cylinder and occasionally at 2 times the rotational frequency, primarily close to the edges of the cylinder. Higher frequencies are rarely seen and therefore usually only at the extreme edges of the cylinder. In addition, cycles in each transverse position can be in phase where the ups and downs occur simultaneously across the entire width of the cylinder (known as "bus") or the phasing of the ups and downs can vary across the cylinder as it rotates. The analysis of these variability patterns demonstrated that the average of measurements from two sensors spaced 180 ° circumferentially apart in a transverse position of a coated cylinder should provide a good measurement of the actual pressure being developed and would cancel, or at least partially cancel, any variability rotational 1 time the rotational frequency that could develop in this position. Similarly, the average of measurements from three sensors spaced 120 ° or four sensors spaced 90 ° circumferentially apart in a transverse position of a coated cylinder should provide a good measurement of the actual pressure being developed and would cancel, or at least partially cancel, any rotational variability 2 times the rotational frequency that could develop in this position. The alternate positioning of multiple sensors to remove the rotation effect is possible. In this way, a more accurate measurement of the pressure distribution across the stamping region must be obtainable. Information on a higher frequency bus that is indicative of cover wear and has been seen in stacks of calenders can be obtained by spacing the detection elements in different rotational positions. The difference between individual detection elements and the average of the group of detection elements in the same transverse progression provides a measure of the roundness of the cylinder and the shape of the cover. The progression of this difference as the cover ages, is an indicator of cover wear.
    [0015] The present invention provides advantages over cylinders and sensor systems that use a single sensor designed to measure pressure in a particular transverse position. Sensor cylinders that only use a single sensor arranged in a transverse position in a cylinder lack the ability to take secondary measurements in the same transverse position for comparison purposes to determine whether there is any imbalance in that particular transverse position. As a result, such a sensor cylinder can provide inaccurate readings to calculate and display the die profile. If the single sensor is placed in a position where there is a high or low point, caused by rotational imbalance, then the pressure reading of the sensor will not be quite accurate and its reading would lead to the calculation of an imprecise wedge pressure profile. In addition, the use of unique sensors in each transverse position cannot generate the data necessary to allow the calculation and display of a rotational variability profile that could provide the operator with additional information in real time to obtain a more accurate coining pressure profile. . The present invention allows the calculation and display of such a profile of rotational variability, together with the pressure profile of coining.
    [0016] In one aspect, the sensor cylinder for use in a die press includes strategically placed sensors including a first set of sensors arranged in a particular configuration along a cylinder cover that covers the cylindrical member. Each sensor in this first set is located in a particular lateral position (transverse position) on the cylinder cover. The sensor cylinder additionally includes additional sets of sensors that are likewise arranged in a particular configuration on the cylinder cover, each sensor of the second set being likewise arranged in a particular transverse position. Each sensor in the first set of sensors has a corresponding sensor in the additional sets to define the group in the transverse direction of sensors that are used to take pressure readings at a particular transverse position. Again, each sensor in the transverse position is spaced circumferentially apart from the other. Multiple corresponding sensors can be strategically placed in different transverse positions along the length of the sensor cylinder, each pair of sensors designed to measure the pressure being developed in that transverse position. Each sensor will measure the pressure as it enters the press die region. In theory, each corresponding sensor in a transverse group should measure the same pressure in the particular transverse position if the sensor cylinder is truly balanced. If the pressure measurements for the two corresponding sensors are significantly different, then the measurements would indicate some variability that may be caused by the dynamics of the rotating sensor cylinder. The present invention allows the sensor cylinder to take multiple pressure measurements, not just one, in each transverse position during each 360 ° revolution of the sensor cylinder. These multiple measurements are used to obtain a more accurate coining pressure profile and a more accurate rotational variability profile. In one aspect of the invention, the readings on each sensor can be averaged to determine an average pressure measurement at that particular transverse position. This average measurement can then be used to compute and display the die pressure profile. The same readings can be used to calculate and display the rotational variability profile of the operating press. The variability of readings at each position will be monitored and displayed to determine whether the rotational variability of the cylinder is stable or increasing. There are many possible measures of this variability including variance, standard deviation, sigma 2, percentage of processing, covariance, peak to peak. Increasing variability using any measure can be indicative of a potential failure in the bearings or cylinder cover or other cylinder problems.
    [0017] In another aspect, multiple sets of sensors are arranged such that a particular pattern of aligned sensors is created. For example, the pattern can be a continuous helical configuration that extends around the sensor cylinder in one revolution forming a helix around the sensor cylinder. The sensors of various assemblies can be aligned in a number of different patterns along the length of the sensor cylinder to develop a very representative coining pressure profile. In another aspect, the continuous line of sensors can extend only partially around the sensor cylinder, for example, in half (1/2) revolution. A second set of sensors would also extend around the sensor cylinder in half (1/2) revolution. In this way, only a partial helix is formed around the sensor cylinder 10. This array of sensors still allows a pair of sensors to be assigned to a particular transverse position. These sensor sets would be spaced 180 ° circumferentially apart from each other. In a similar way, three propellers can be wound 120 ° each, four 90 ° each or n 360 ° / n propellers each. The particular advantage of this array of sensors is the detection of short wavelength bars that can be associated with cap wear as each sensor element is in a different rotational position.
    [0018] In another aspect, a system for calculating and displaying a wedge pressure profile and rotational variability profile for a wedge press includes a sensor cylinder configured with a second cylinder in a wedge arrangement, the sensor cylinder and the second cylinders adapted to rotatively press matter between them in a coined region. The sensor cylinder has a plurality of transverse positions defined along its length. The sensor cylinder includes a first set of pressure measurement sensors and additional sets of pressure measurement sensors, each sensor of the various sensor sets being arranged in a particular transverse position along the sensor cylinder. Each sensor is configured to detect and measure pressure when the sensor enters the die region of the die press. Again, each sensor in the first set has corresponding sensors in the additional sets that are located in the same transverse position but are spaced circumferentially over the sensor cylinder to provide multiple pressure readings at each transverse position. The plurality of readings can be used to calculate and formulate the wedge pressure profile and rotational variability profile for the press. In one respect, an average pressure reading at each location can be calculated to obtain a more accurate coining pressure profile.
    [0019] A transceiver can be connected to the sensor cylinder and to each of the sensors of the multiple sets to transmit data signals from the sensors to a receiving unit. A processing unit to calculate the coined pressure distribution based on the pressure measurements of each group in the transverse direction of corresponding sensors from the first and additional sensor sets can be coupled to the sensor cylinder. A display unit can also be coupled to the processing unit to provide a visual display of the wedge pressure profile and the rotational variability profile.
    [0020] A method for detecting and removing the effects of rotational variability of the wedge pressure profile of a sensor cylinder from a wedge press includes providing a sensor cylinder having a working length and a number of transverse positions arranged along the length of work. Multiple pressure measurement sensors are placed in each of the transverse positions, the sensors of each transverse position being spaced circumferentially from each other. The pressure being exerted on each sensor in each transverse direction group as the sensor moves into the coining region of the coining press is then measured with the pressure measurements of each sensor in that transverse position being calculated to obtain a measurement medium pressure in the respective transverse position. The pressure measurements obtained calculated at each transverse position can then be used to create a wedge pressure profile for the wedge press.
    [0021] In yet another aspect, a method for measuring and removing the effects of rotational variability of the wedge pressure profile of a sensor cylinder of a wedge press includes measuring the pressure exerted on a first sensor disposed in a particular transverse position on the sensor cylinder of the die press as the sensor enters the die region of the press. The pressure exerted on the additional sensors is also measured as the second sensor enters the press die region. The additional sensors are located in the same transverse position as the first sensor but are spaced circumferentially from the first sensor. Pressure measurements from multiple sensors are used to calculate and display the wedge pressure profile and rotational variability profile. Multiple pluralities of sensors can be placed in various transverse positions along the sensor cylinder to measure pressures at multiple displaced locations for each transverse position. Pressure measurements from multiple sensors for each transverse position are averaged and used to calculate and display the coining pressure profile that is developed across the coining region. The method may include providing corrective procedures for the sensor cylinder to adjust high or low pressure points along the wedge pressure profile.
    [0022] These and other advantages of the present invention will become apparent from the following detailed description of preferred configurations which, taken in conjunction with the drawings, illustrate by way of example the principles of the invention. Brief description of the drawings
    [0023] Figure 1 is a perspective view showing a die press using a particular configuration of a sensor or coated cylinder produced in accordance with the present invention;
    [0024] Figure 2 is a schematic view, extreme, of the coinage press of figure 1 showing the formation of a wedged web between the coinage rollers, the coinage width of the coinage press being designated by the letters "NW";
    [0025] Figure 3A is a side elevation view of a particular configuration of a sensor cylinder produced in accordance with the present invention which shows the placement of two sets of sensors along the length of the cylinder;
    [0026] Figure 3B is an extreme view of the sensor cylinder of figure 3A showing the placement of the first and second sets of sensors about 180 ° to the circumferential part on the sensor cylinder;
    [0027] Figure 4 is a side elevation view showing the placement of the two sensor lines along the length of the sensor cylinder with sensors arranged within the region of stamping which is designated by a pair of dotted lines;
    [0028] Figure 5 is a side elevation view showing the placement of the two sensor lines along the length of the sensor cylinder after the sensor cylinder has rotated 180 ° from its initial position shown in figure 4;
    [0029] Figure 6A is a side view of a particular configuration of a sensor cylinder produced in accordance with the present invention which shows the placement of three sets of sensors along the length of the cylinder;
    [0030] Figure 6B is an extreme view of the sensor cylinder of figure 6A showing the placement of the first, second and third sets of sensors about 120 ° apart circumferentially on the sensor cylinder;
    [0031] Figure 7A is a side view of a particular configuration of a sensor cylinder produced in accordance with the present invention which shows the placement of four sets of sensors along the length of the cylinder;
    [0032] Figure 7B is an extreme view of the sensor cylinder of figure 7A showing the placement of the first, second, third and fourth sets of sensors about 90 ° circumferentially on the sensor cylinder;
    [0033] Figure 8A is a side view of a particular configuration of a sensor cylinder produced in accordance with the present invention which shows the placement of two sets of sensors wound 180 ° circumferentially along the length of the cylinder;
    [0034] Figure 8B is an extreme view of the sensor cylinder of figure 8A showing the placement of the first and second sets of sensors 180 ° apart circumferentially on the sensor cylinder;
    [0035] Figure 9A is a side view of a particular configuration of a sensor cylinder produced according to the present invention which shows the placement of three sets of sensors wound 120 ° circumferentially along the length of the cylinder;
    [0036] Figure 9B is an extreme view of the sensor cylinder of figure 9A showing the placement of the sensor sets about 120 ° circumferentially on the sensor cylinder;
    [0037] Figure IOA is a side view of a particular configuration of a sensor cylinder produced in accordance with the present invention which shows the placement of four sets of sensors wound 90 ° circumferentially along the length of the cylinder;
    [0038] Figure 10B is an extreme view of the sensor cylinder of figure 10A showing the placement of the sensor sets about 90 ° circumferentially on the sensor cylinder;
    [0039] Figure 11 is a schematic drawing showing the basic architecture of a particular monitoring system and paper processing line that can implement the sensor cylinder of the present invention;
    [0040] Figure 12 is a graphical display showing a normalized error plot versus profile position for a single sensor array and two sensor array showing a helical pattern of phase variability during a cycle;
    [0041] Figure 13 is a graphic display showing a normalized error plot versus profile position for a single sensor arrangement and two sensors arrangement (180 °) showing a helical pattern of variability out of phase during a cycle;
    [0042] Figure 14 is a graphic display showing a normalized error plot versus profile position for a single sensor array, a two sensor array (180 °) and three sensor array (120 °) showing a helical pattern of variability out of phase during one cycle / center rotation and 2 cycles / edge rotation; and
    [0043] Figure 15 is a graphic display showing a comparison of wedge pressure versus profile position for arrangements of 3 sensors for arrangement 1 (0o), arrangement 2 90 °) and arrangement 3 (180 °). Detailed description of preferred settings
    [0044] The present invention relates to cylinders for use particularly in die-pressed cylinder presses, in which the cylinders exert compressive forces on wefts to form paper, textile material, plastic sheet and other related materials. Although the present invention can be used in the above industries, the following discussion will focus on the role of cylinders for use particularly in papermaking and particularly with a die-press to empty a fibrous web, comprising a sensor cylinder rotatably arranged cooperate with another cylinder in the die press. Figures 1-5 represent the configuration where two sensors are positioned 180 ° circumferentially across the width of the cylinder at each transverse location as this provides the simplest illustration. Additional configurations with multiple sensors at each transverse location can be extrapolated, as shown in figures 6-8B.
    [0045] As shown in figure 1, a schematic perspective view shows a sensor cylinder 10 produced in accordance with the present invention as a portion of a wedge press 12 that includes a second cylinder 14 that cooperates with the sensor cylinder 10 to produce pressure on a fibrous web 16 which is advanced between the two cylinders 10, 14. The sensor cylinder 10 and second cylinder 14 rotate, as indicated by the arrows in figure 2, and are spaced apart in a region of wedging 18 where the two cylinders 10. 14 somehow meet to put pressure on the fibrous web 16 in order to remove part of the liquid suspended in the web 16. The letters NW in figure 2 indicate the "coining width" formed in the coining region 18. This stamping region 18 extends along the entire transverse length of the sensor cylinder 10 and second cylinder 14. The sensor cylinder 10 may include an inner base cylinder 20 and the outer cylinder cover 22 may comprise er material suitable for use in the production of a press cylinder. The inner base cylinder may include one or more lower layers, with the outer cylinder cap 22 being the upper layer. This sensor cylinder 10 composed with the cylinder cover 24 is commonly known as a "coated cylinder" in the industry. The second cylinder 14 can be an uncoated cylinder or also comprise a number of layers of materials and a base cylinder as well. If multiple coated cylinders are contained in the wedge, each can have sensors and produce wedge profiles and variability profiles. The wedge profiles or the two coated cylinders can average together for greater precision in producing wedge profile adjustments. However, the variability profiles of each coated cylinder provide information about the condition of that specific cylinder. It should be appreciated that although the present configurations focus only on a single coining, it is possible to use single cylinders involved in interactions of coining, coining or multi-coining which are common in the paper industry. Only two cylinders 10, 14 are shown to more clearly describe the advantages associated with the present invention. However, multiple wedge profiles can be generated with each independent sensor cylinder used in the wedge press.
    [0046] Referring now to Figures 1 and 3, a first set 24 of sensors 26 is associated with the sensor cylinder 10 together with a second set 28 of sensors 30. The sensors 26 of the first set 24 are designated by a circle while the sensors 30 of the second set 28 are designated by a square. Circles and squares were used for easy identification of the sensors constituting the first set 24 of sensors of the second set 28 of sensors. However, in practice, these sensors 26 and 30 can be exactly the same sensor device. Also, one or both cylinders 10, 14 may have sensors associated with the cylinder. For purposes of illustration, however, this discussion will focus only on one of the cylinders having detection and measurement capabilities.
    [0047] These sensors 26 and 30 can be at least partially arranged inside the cylinder cover 22 that forms the portion of the sensor cylinder 10. Each of the sensors 26 and 30 is adapted to detect and measure a particular data parameter, such as , for example, the pressure being exerted on the sensor when it enters the stamping region 18. As can be better seen in figure 3A, the first set 24 of sensors 26 is shown arranged in a particular configuration along the cylinder sensor 10, each sensor 26 being located in a particular lateral position (referred to as the "cross position" or "CD position") on the sensor cylinder 10. Each cross position is at a particular distance from the first end 32 of the sensor cylinder 10. As can be seen in the particular configuration of figure 3A, the first set 24 of sensors 26 are arranged along a line that forms a spiral around the entire length of the sensor cylinder in a single rev solution forming a helix or helical pattern. The second set 28 of sensors 30 is likewise arranged along a line that forms a spiral around the entire length of the sensor cylinder in a single revolution creating the same helix or helical pattern except that this second set 28 of sensors 30 is separated apart from the first set 24 by 180 ° circumferentially around the sensor cylinder 10. Figure 3B shows an extreme view of the first set 24 spaced approximately 180 ° apart from the second set 28. The use of these two lines of sensors 26, 30 allows a large amount of the outer surface of the sensor cylinder 10 to be measured while the cylinder 10 is rotating. Although the particular pattern of the first set 24 and second set 28 is shown here in a helical pattern around the cylinder 10, it should be appreciated that these sets 24, 28 of sensors can be arranged in other particular configurations to provide pressure measurements along of the entire sensor cylinder 10.
    [0048] Each sensor 30 of this second set 28 is arranged in a particular transverse position in the sensor cylinder 10. Each sensor 26 of the first set 24 has a corresponding sensor in the second set 28 with each corresponding sensor of the first and second sets being located in the same transverse position along the sensor cylinder. In this way, each transverse position of the sensor cylinder has a pair of sensors that measure pressure in two different circumferential positions. Each pair of corresponding sensors are located along the sensor cylinder 10 in a transverse position to provide two sensor readings when the sensor cylinder completes a full 360 ° C rotation. The average of these two readings can then be used to calculate and display the wedge pressure profile that is being developed in the rotary wedge press 12.
    [0049] The way in which pressure measurements can be made is best explained by referring to figures 4 and 5. Figures 4 and 5 show views in lateral elevation of the sensor cylinder 10 as it would be seen looking directly within the region of coinage 18 which is represented by a pair of dotted lines. Figure 4 shows a typical view in which the sensor cylinder 10 has a pair of sensors 26, 30 directly in the stamping region ready to take a pressure measurement. A grid located at the bottom of the sensor cylinder 10 for illustrative purposes shows fourteen (14) individual transverse positions along the working length L of the sensor cylinder 10. In figure 4, the first set 24 of sensors 26 can be seen represented positioned in the positions cross sections numbered 1-7. Likewise, the second set 28 of sensors 30 are shown in the transverse positions numbered 8-14 in figure 4. The other sensors 26 of the first set 24 are arranged in the transverse positions 8-14 but cannot be seen in figure 4. likewise, the remaining sensors 30 of the second set 28 are in positions 1-7 but cannot be seen in figure 4 since they are on the reverse side of the sensor cylinder. It should be appreciated that only fourteen transverse positions are shown in these drawings to provide a simple explanation of the way in which the present invention operates. In actual operation, there may be many more positional transverse positions associated with a sensor cylinder given the long lengths and widths that are associated with these cylinders.
    [0050] Only sensor 26 located in the 4th transverse position and sensor 30 located in the 11th transverse position are in the correct position to take the pressure measurement once they are located in the NR stamping region. Once these two sensors 26, 30 enter the NR stamping region, the pressure being exerted on the sensor is measured. As the sensor cylinder 10 continues to rotate, the other sensors in the 5th and 12th transverse positions will then be located in the NR stamping region and will be able to measure the pressure at these particular positions. The additional rotation of the sensor cylinder 10 places the sensors in the 6th and 13th transverse positions within the NR stamping region for pressure measurements. Eventually, the sensor cylinder 10 rotates 180 ° from its initial position shown in figure 4 and again will have sensors in the 4th and 11th transverse positions. This array of sensors 26, 30 is shown in figure 5. The only difference is that a sensor 30 of the second set 28 is now in the 4th transverse position and a sensor 26 of the first set 24 is in the 11th transverse position. These sensors 26 and 30 shown in figures 4 and 5 are corresponding sensors that read the pressure in the 4th transverse position. Likewise, the sensor 26 of the first set 24 in figure 5 is now in the 11th transverse position ready to measure the pressure at that location. Sensor 30 in the 11th transverse position shown in figure 4 and sensor 26 in the 11th transverse position of figure 5 are corresponding sensors that provide pressure readings at that particular location on the sensor cylinder. The system that processes the pressure measurements can take advantage of the readings of each pair of corresponding sensors in a particular transversal position and calculate the coinage profile in that position based on an average reading. For example, if sensors 26, 30 in the 4th transverse position both read 200 pounds per linear inch (pli) then their average would be 200 pli. This would indicate that there is little, if any, pressure variation caused by the rotation of the sensor cylinder 10. The average reading of 200 pli would then be used to calculate and display the die pressure profile at that particular transverse position. For example, if sensor 30 in the 11th transverse position, as shown in figure 4, reads 240 pli and sensor 26 in the 11th position shown in figure 5 reads 160 pli, then the average pressure would be 200 pli. These two different readings at the 11th transverse position would indicate a pressure variation that would most likely be attributed to the high speed rotation of the sensor cylinder 10. However, when processing the wedge pressure profile for the 11th transverse position, the mean pressure measurement 200 pli would be used since this average will cancel, or almost cancel, the effect of rotational variability that is occurring along the sensor cylinder 10. The average of the two measurements will result in a more accurate representation of the pressure being developed in that particular transversal position .
    [0051] In prior art sensor cylinders that use a single sensor in each transverse position, the processing unit would have unique sensors in each of the transverse positions. A prior art sensor cylinder that has a single sensor at the 11th transverse position in the example illustrated above would depend only on a single reading at that position to calculate and display the die pressure profile. A prior art cylinder would then use the 240 pli or 160 pli reading to determine and display the die pressure profile at this location. Such a reading would be less than accurate since the sensor cylinder rotates fully in a 360 ° revolution. Consequently, the die pressure calculated in this position will be less than accurate. However, the processing unit would exhibit a coining pressure profile that would appear to be accurate but would actually be less than accurate. If adjustments are made to the sensor cylinder by the machine operator or through automatic adjustment equipment to compensate for high or low pressure readings, then the sensor cylinder could be adjusted to develop even more incorrect pressures at various locations in the stamping region.
    [0052] As the cylinder 10 rotates placing different sensors in the stamping region, the respective sensors measure the pressure that is then transmitted to the processing unit. The processing unit associated with each sensor cylinder 10 can then calculate the average pressure of each pair of corresponding sensors in the various transverse positions and produce a wedge pressure profile that can be viewed on a monitor or other visual screen. Computer equipment well known in the art can be used to process the pressure readings that are being produced in milliseconds.
    [0053] A method of the present invention for detecting and removing the effects of rotational variability from the wedge pressure profile of a sensor cylinder from a wedge press therefore includes providing a sensor cylinder having a working length and a plurality of positions transverse arranged along the working length and the placement of pairs of pressure measurement sensors in each of the transverse positions. In the particular configuration shown in figures 3A-5, the method uses sense sensors spaced 180 ° apart circumferentially. This allows two different pressure measurements to be produced at each transverse position. The pressure exerted on each sensor in each pair as the sensor moves into the die region of the die press can then be measured and the average of each of the two sensors at each cross position can be calculated to determine a measurement medium pressure. The average pressure measurements at each transverse position can then be used to provide a wedge pressure profile for the wedge press.
    [0054] It should be appreciated that although the present invention discloses mathematical modeling that uses the direct average calculation of the measurements taken for each corresponding sensor, it may be possible to obtain a composite average measurement using other types of models that can obtain and calculate an average measurement in each transverse position. For example, operational equipment (data processors) can use another model such as "curve fitting" that can also provide the most accurate wedge pressure profile. Still other models known in the art can be used with the multiple pressure readings from the various sensors to obtain the most accurate coining pressure profile.
    [0055] Variations of the sensor cylinder are shown in figures 6-8. Referring initially to figures 6A and 6B, three different sets of sensors are used and extend around the sensor cylinder 10. As can be seen in the disclosed configuration of the sensor cylinder 10, a first set 24 of sensors 26, a second set 28 of sensors 30 and a third set 32 of sensors 34 are shown as continuous rows of sensors that extend around the sensor cylinder in one completed revolution, each set 24, 28, 32 forming a helix around the sensor cylinder 10. The sensors 34 are shown as triangles to distinguish those particular sensors from sensors 26, 30 from the other two sets 24, 28. Adjacent sensor sets 24, 28 and 30 are spaced 120 ° circumferentially apart (see figure 6B) in one transverse position of the sensor cylinder 10 to provide a good measurement of the actual pressure being developed and would cancel, or at least partially cancel, any rotational variability of 2 times the rotational frequency that could develop in this transversal position. Again, measurements from each of the corresponding sensors at each CD position can be averaged to provide an average measurement that provides a more accurate representation of the wedging pressure being developed at the CD position.
    [0056] It should be appreciated that the working length of the sensor cylinder can be quite long and may require each set of sensors to be wound more than once around the cylinder. Again, such a pattern is satisfactory as long as the pattern allows three sensors to be in use in each transverse position (spaced 120 ° apart) to produce three separate pressure readings which are then processed to produce a base reading.
    [0057] Referring now to figures 7A and 7B, a fourth set 36 of sensors 38 has been added to the sensor cylinder 10 to provide yet another sensor in each transverse position. Adjoining assemblies 24, 28, 30, 36 are spaced 90 ° circumferentially apart (see figure 7B) in a transverse position of the sensor cylinder 10 to provide a good measurement of the actual pressure being developed and would cancel, or at least cancel partially, any rotational variability of 2 times the rotational frequency that could develop in this transversal position. Again, it should be appreciated that the working length of the sensor cylinder can be quite long and may require each set of sensors to be wound more than once around the cylinder. Such a pattern is satisfactory as long as the pattern allows four sensors to be used in each transverse position (spaced 90 ° apart) to produce four separate pressure readings which are then processed to produce a base reading.
    [0058] Referring now to figures 8A and 8B, a first set 24 of sensors 26 is shown as a continuous line of sensors that extend around the sensor cylinder in half (1/2) revolution. Likewise, a second set 28 of sensors 30 extends around the sensor cylinder in half (1/2) revolution. In this way, only a partial helix is formed around the sensor cylinder 10. This array of sensors 26, 30 still allows a pair of sensors to be assigned to a particular transverse position. Like the sensor cylinder 10 shown in figures 3A-5, adjacent assemblies 24, 28 are spaced 180 ° circumferentially apart (see figure 8B). The resulting structure creates a sensor cylinder that has only one sensor entering the stamping region at any given time. This particular configuration of the sensor cylinder 10 should provide a good measurement of the actual pressure being developed and would cancel, or at least partially cancel, any rotational variability of 2 times the rotational frequency that could develop in this transversal position.
    [0059] In a similar way, three propellers can be wound 120 ° each, four 90 ° each or n 360 ° / n propellers each. The particular advantage of this array of sensors is in the detection of short wavelength bars that can be associated with wear of the cap since each sensor element is in a different rotational position. Figures 9A and 9B show three continuous lines 24, 28 and 32 of sensors 26, 30 and 34 that extend around the sensor cylinder in a partial revolution (a revolution of 120 °). In this way, only a partial helix is formed around the sensor cylinder 10 for each set 24, 28 and 32. This array of sensors 26, 30 and 34 allows a group of sensors to be designated for a particular transverse position. Like the sensor cylinder 10 shown in figures 6A and 6B, adjacent assemblies 24, 28 and 32 are spaced 120 ° circumferentially apart from each other along the cylinder (see figure 9B). Figures 10A and 10B show four continuous lines 24, 28, 32 and 36 of sensors 26, 30, 34 and 38 that extend around the sensor cylinder in a partial revolution (a 90 ° revolution). Again, only a partial helix is formed around the sensor cylinder 10 for each set 24, 28, 32 and 36. This array of sensors 26, 30, 34 and 38 allows a group of sensors to be assigned to a particular transverse position. Like the sensor cylinder 10 shown in figures 7A and 7B, adjacent assemblies 24, 28, 32 and 36 are spaced 90 ° circumferentially apart from each other (see figure 10B). The resulting structure creates a sensor cylinder that has only one sensor entering the stamping region at any given time. This particular configuration of sensor cylinder 10 should provide a good measurement of the actual pressure being developed and would cancel, or cancel at least partially, any rotational variability of 2 times the rotational frequency that could develop in this transverse position. Similar lines of sensors can be arranged along the length of the sensor cylinder 10 such that n lines of sensors forming partial helices are formed and placed 360 ° / n along the length of the cylinder 10. The adjacent lines of sensors would be spaced 360 ° / n circumferentially to the part between them along the cylinder.
    [0060] Methods for detecting and removing the effects of rotational variability of the wedge pressure profile of a sensor cylinder from a wedge press using the configurations of figures 6A-10B include a sensor cylinder having a working length and a plurality of transverse positions arranged along the working length and the placement of pairs of pressure measurement sensors in each of the transverse positions. The method will calculate an average pressure measurement using the number of sensors placed in each transverse position. In the configurations of figures 6A and 6B and figures 9A and 9B, three sensors located in a transversal position are averaged. Likewise, readings from four sensors in the configurations of figures 7A and 7B and figures 10A and 10B are used to produce an average pressure measurement. The configuration in figures 8A and 8B, like the configuration in figures 3A-5, uses a pair of sensor measurements in each transverse position. The average pressure measurements at each transverse position can then be used to provide a wedge pressure profile for the wedge press.
    [0061] The sensors used in the various sets can be electrically connected to a transmitting unit 40 which can also be connected to the detection unit 10. The transmitting unit 40 can transmit wireless signals that can be received by a wireless receiver located in a remote location. The wireless receiver can be a part of a system that processes the signals, creates the wedge profile and sends corrective signals back to the sensor cylinder 10. The sensors can be collected in the same collection period and averaged together for use immediate. However, additional wireless transmission can reduce the battery life of the wireless unit. As the rotational variability changes slowly, alternating collection between sensors and averaging along collections over alternate collection periods will provide comparable information and can save battery life.
    [0062] A particular system for processing the signals is shown in figure 11 and will be discussed in more detail below. Wireless transmission can be performed via radio waves, optical waves, or any other known remote transmission methods. If direct wire transmission is desired, sets of slip rings and other well-known electrical coupling devices (not shown) can be used.
    [0063] Figure 11 illustrates the global architecture of a particular system for monitoring a product quality variable as applied to paper production. The system shown in figure 11 includes processing equipment that calculates and displays the wedge pressure profile. For example, pressure measurements can be sent to the wireless signal received from the transmitter (s) located on the sensor cylinder. The signals are then sent to the high resolution signal processor to allow average pressure measurements to be calculated and used to create and display the die pressure profile. The data can be transferred to the process control which can, for example, send signals back to the sensor cylinder to correct the pressure distribution across the stamping region. Such a coinage press that is capable of real-time correction is described in U.S. Patent No. 4,509,237, incorporated herein by reference in its entirety. This wedge press uses a cylinder that has position sensors to determine an irregular arrangement of the cylinder cover. The signals from the sensors activate support or pressure elements under the cylinder cover, to equalize any irregular positioning that may exist due to pressure variations. Other known equipment that can correct the cylinder cover can also be used.
    [0064] The sensors can take any form recognized by those skilled in the art as being suitable for detecting and measuring pressure. Pressure sensors can use piezoelectric sensors, piezoresistive sensors, force sensitive resistors (FSRs), optical fiber sensors, strain cells based on strain gauges, and capacitive sensors. The invention should not be limited to the sensors named above and may include other pressure sensors known to those of ordinary skill in the art. It should be appreciated that data related to the operational parameter of interest, other than pressure, can be used with the present invention. In this case, the sensors can be used to measure temperature, tension, humidity, coining width, etc. The sensors would be strategically located along the sensor cylinder as described above. Depending on the type of sensor, additional electronics may be required at each sensor location. The design and operation of the above sensors are well known in the art and need not be discussed further here.
    [0065] The processing unit is typically a personal computer or similar data exchange device, such as a paper mill's distributive control system that can process signals from sensors into easily understood information, useful from a remote location. Suitable exemplary processing units are discussed in U.S. Patent Nos. 5,562,027 and 6,568285 to Moore, the disclosures of which are incorporated herein in their entirety.
    [0066] Referring now to figures 12-15, graphical displays are provided which further explain and present the typical mapping of cylinder variability that can develop during operation. The surfaces of the cylinder were mapped according to the methods and apparatus described in U.S. Patent No. 5,960,374 using sensors of paper properties that were related to stamping pressure. The mappings used an arrangement of 5,000 elements divided into 100 cross positions and 50 rotational positions. The mapping confirmed that most of the cylinder's variability occurs in 1 cycle per revolution in phase through the cylinder or out of phase (the phase shifts with the profile position). A pattern of 2 cycles per revolution is sometimes noticed at the edges of the cylinder. Higher frequencies (such as 3 cycles per revolution) are rarely seen and therefore only at the extreme edges and have little impact. Three cylinder surface maps were normalized (on a scale of 0-100%) and helical sweep paths were superimposed on the surface maps. The true coining pressure profile was determined by averaging the 50 rotational positions in each of the 100 transverse positions. Helical sweep paths and averages of two or more of these paths at various separation angles were used to develop estimates of the coining pressure profile. These estimates were then subtracted from the true coinage profile to obtain the error in each estimate. Figures 12 and 13 show that two arrays of sensors across the width of the cylinder and separated by 180 ° circumferentially are sufficient to remove most of the rotational variability when the variability is 1 cycle per revolution. Figure 14 demonstrates that 2 arrays are not sufficient to deal with the variability of 2 cycles per revolution at the edges since the difference in estimate from the true coining profile is mostly at the edges as the single helical scan. For this case a minimum of 3 arrangements separated by 120 ° would be necessary. A larger number of arrangements per revolution can further reduce the measurement error, but at a higher cost. Therefore, the configuration of three (3) sensor arrays (lines) separated by 120 ° circumferentially ensures that all variability of 1 cycle / revolution and 2 cycles / revolution is reduced. However, 2 arrangements can be sufficient for many cylinders without 2 cycle / revolution variability and more than 3 arrangements can provide superior measurement and variability reduction but at a higher cost.
    [0067] Figure 15 shows wedge pressure profiles collected in a cylinder using the various built-in sensors. The data show clear differences in the profile between the 3 arrangements. Most notably, arrangements 1 and 3 (180 ° apart) show a significant difference in shape, especially in profile positions 14-20.
    [0068] Although it has been described here that what are considered to be preferred and exemplary configurations of the present invention, other modifications of the invention should be apparent to those skilled in the art from the teachings here and it is, therefore, desirable to be guaranteed in the attached claims all such modifications as they fall within the true spirit and scope of the invention. Therefore, any modification of the format, configuration and composition of the elements comprising the invention is within the scope of the present invention. Consequently, what is desired to be guaranteed by the United States Patent Letters is the invention as defined and differentiated in the following claims.
    权利要求:
    Claims (25)
    [0001]
    11. Sensor cylinder for use in a coinage press, FEATURED by the fact that it comprises: a cylindrical member having an external surface and adapted for rotational movement; a cylinder cap (22) circumferentially covering the outer surface of the cylindrical member; and a sensor system associated with the cylinder cap (22), comprising: a first set (24) of pressure measurement sensors arranged in a particular configuration along the cylinder cap (22), each sensor of the first set (24 ) being located in a particular transverse position on the cylinder cover (22); and at least one additional set of pressure measurement sensors arranged in a particular configuration along the cylinder cover (22), the at least one additional set of pressure measurement sensors includes a second set (28) and a third set (32), each sensor of at least one additional second set (28) being located in a particular transverse position on the cylinder cover (22), where each sensor of the first set (24) has a corresponding sensor in the second (28) ) and third (32) assemblies which are located in the same transverse position but are spaced 120 ° apart circumferentially, each set of sensors forming a partial helix that extends about 120 ° around the sensor cylinder (10); wherein each sensor in the first set (24) has a corresponding sensor in each of at least one additional set of pressure measurement sensors that is located in the same transverse position and spaced circumferentially in a uniformly spaced manner, and the first set (24) and the at least one additional set of pressure measurement sensors comprises n sets of sensors, where each sensor in one of the n sets has a corresponding sensor in the remaining n-1 sensors, each corresponding sensor being located in the same transverse position and spaced 360 ° / n to the circumferential part of an adjacent sensor, each set of sensors forming a partial helix that extends about 3607n around the sensor cylinder (10).
    [0002]
    12. Sensor cylinder, according to claim 1, CHARACTERIZED by the fact that it comprises a transceiver connected to the cylindrical member and to each of the sensors of the first set (24) and of at least one additional set of pressure measurement sensors to transmit data signals from the sensors.
    [0003]
    13. Sensor cylinder according to claim 1, CHARACTERIZED by the fact that the pressure being applied to a sensor from the first set (24) and from at least one additional set of pressure measurement sensors is measured when these sensors enter the coining region of the coining press.
    [0004]
    14. Sensor cylinder according to claim 1, CHARACTERIZED by the fact that the at least one additional set of pressure measurement sensors includes a second set (28) and a third set (32), where each sensor of the first set (24) has a corresponding sensor in the second (28) and third (32) sets which is located in the same transverse position and spaced 120 ° to the circumferential part.
    [0005]
    15. Sensor cylinder according to claim 1, CHARACTERIZED by the fact that the at least one additional set of pressure measurement sensors includes a second set (28), where each sensor of the first set (24) has a sensor corresponding in the second set (28) which is located in the same transverse position and 180 ° spaced circumferentially.
    [0006]
    16. Sensor cylinder according to claim 1, CHARACTERIZED by the fact that the at least one additional set of pressure measurement sensors includes a second set (28), a third set (32), and a fourth set, in that each sensor in the first set (24) has a corresponding sensor in the second, third and fourth sets, each corresponding sensor being located in the same transverse position and spaced 90 ° to the circumferential part of an adjacent sensor.
    [0007]
    17. Sensor cylinder according to claim 1, CHARACTERIZED by the fact that the at least one additional set of pressure measurement sensors includes a second set (28) and a third set (32), where each sensor of the first set (24) has a corresponding sensor in the second (28) and third (32) sets which is located in the same transverse position and spaced 120 ° to the circumferential part of an adjacent sensor, each set of sensors forming a partial helix that extends about 120 ° around the sensor cylinder (10).
    [0008]
    18. Sensor cylinder according to claim 1, CHARACTERIZED by the fact that the at least one additional set of pressure measurement sensors includes a second set (28), in which each sensor of the first set (24) has a sensor corresponding in the second set (28) which is located in the same transverse position and 180 ° spaced circumferentially, each set of sensors forming a partial helix that extends about 180 ° around the sensor cylinder (10).
    [0009]
    19. Sensor cylinder according to claim 1, CHARACTERIZED by the fact that the at least one additional set of pressure measurement sensors includes a second set (28), a third set (32) and a fourth set, in which each sensor in the first set (24) has a corresponding sensor in the second, third, and fourth sets, each corresponding sensor being located in the same transverse position and spaced 90 ° to the circumferential part of an adjacent sensor, each set of sensors forming a partial helix which extends about 90 ° around the sensor cylinder (10).
    [0010]
    20. System for calculating and displaying a pressure profile for a die press, CHARACTERIZED by the fact that it comprises: a sensor cylinder (10) configured with a second cylinder on a die press, the sensor cylinder (10) and the second cylinder adapted to rotatively press matter between them in a stamping region, the sensor cylinder (10) comprising a plurality of transverse positions along its length, the sensor cylinder (10) comprising a plurality of sets of pressure measurement sensors, each sensor of the plurality of sets of sensors being arranged in a transverse position along the sensor cylinder (10), each sensor configured to detect and measure pressure when the sensor enters the stamping region of the stamping press, where each sensor from one of the the n sets have a corresponding sensor in the remaining n-1 sensors, each corresponding sensor being located in the same transversal and spaced position 3 607n to the circumferential part of an adjacent sensor in the sensor cylinder (10), each set of sensors forming a partial helix that extends about 3607n around the sensor cylinder (10), each of the corresponding sensors of the plurality of sets providing a measurement pressure in the respective transverse position that is averaged to provide an average measurement for processing equipment that calculates and displays a wedge pressure profile for the wedge press and a wedge rotational variability profile.
    [0011]
    21. System, according to claim 10, CHARACTERIZED by the fact that a mathematical model is used to analyze the plurality of sensor readings in each transversal position to correct the coining pressure and calculate the coining rotational variability profile.
    [0012]
    22. System according to claim 10, CHARACTERIZED by the fact that it additionally includes a transceiver connected to the sensor cylinder (10) and to each of the sensors of the plurality of sets for transmitting data signals from the sensors to a receiver unit.
    [0013]
    23. System according to claim 12, CHARACTERIZED by the fact that it additionally includes a processing unit for calculating the coined pressure distribution based on the average of the pressure measurements of each of the corresponding plurality of sensors of the plurality of sensor sets pressure measurement and display the coining pressure profile and coining variability profile on a display unit.
    [0014]
    24. System, according to claim 10, CHARACTERIZED by the fact that the sensors of each set are arranged in a certain pattern along the sensor cylinder (10).
    [0015]
    25. Method for detecting and removing the effects of rotational variability of the wedge pressure profile of a sensor cylinder (10) of a wedge press, FEATURED by the fact that it comprises: measuring a pressure exerted on a first sensor disposed in a transversal position in particular in the sensor cylinder (10) as the first sensor enters a stamping region of the stamping press; measure the respective pressure exerted on one or more additional sensors in the transverse position in particular as they enter the coining region of the die press, each of the one or more additional sensors being located in the same particular transverse position as the first sensor and circumferentially spaced from the first sensor; and averaging the pressure measurement of the first sensor and the pressure measurements of one or more additional sensors and determining a coining pressure profile, where the first sensor, the one or more additional sensors and a plurality of extra sensors, the extra sensors being located in one or more other transverse positions along the sensor cylinder (10), comprise a plurality of sensors arranged as n sets of sensors, where each sensor of one of the n sets has a corresponding sensor in the n- sets 1 remaining, each corresponding sensor being located in the same transverse position and spaced 3607n circumferentially from an adjacent sensor, each set of sensors forming a partial helix that extends about 3607n around the sensor cylinder (10); and adjust the sensor cylinder (10) to reduce the variability of the pressure profile.
    [0016]
    26. Method, according to claim 15, CHARACTERIZED by the fact that it additionally includes: displaying the coining pressure profile based on the average pressure measurements of the first sensor and one or more additional sensors.
    [0017]
    27. Method according to claim 15, CHARACTERIZED by the fact that it additionally includes: adjusting the sensor cylinder (10) to reduce variability of the die pressure profile in the particular transverse position in the sensor cylinder (10).
    [0018]
    28. Method for detecting and removing the effects of rotational variability of the wedge pressure profile of a sensor cylinder (10) of a wedge press, CHARACTERIZED by the fact that it comprises: placing n sets of sensors in the sensor cylinder (10), in that n is an integer greater than one, each sensor of the n sets of sensors being arranged around the sensor cylinder (10) to detect pressure displayed on the sensor cylinder (10) at the location of that sensor and to provide a pressure signal representative of the therein, each of the sensors of the n sets being arranged in a particular transverse position of a plurality of transverse positions along the sensor cylinder (10), each sensor of one of the n sets having a corresponding sensor in the remaining n-1 sets, each corresponding sensor being located in the same transverse position and spaced 3607n circumferentially from an adjacent sensor in the sensor cylinder (10), each set of sensors forming a helix partial extending about 3607n around the sensor cylinder (10); measure the pressure exerted on each sensor of the n sets when the sensor cylinder (10) is rotating and the sensors are in the region of the die press; and in each of the plurality of transversal positions, average the pressure readings of each sensor of the n sets located in that transversal position; compare the pressure readings for each sensor in the multiple sets with the pressure readings for the corresponding sensors in the additional sensor sets; and adjust the sensor cylinder (10) to reduce the variability of the pressure profile.
    [0019]
    29. Method, according to claim 18, CHARACTERIZED by the fact that the sensors of the n sets are arranged along the sensor cylinder (10) such that a sensor of the first set (24) will be in the stamping region in the stamping press when a sensor from at least one other assembly is also in the die region of the die press.
    [0020]
    30. Method, according to claim 18, CHARACTERIZED by the fact that a respective pressure measurement is made for each sensor of each of the n sets as the sensors enter the stamping region.
    [0021]
    31. Method, according to claim 18, CHARACTERIZED in that the sensor measurements are transmitted wirelessly by a device connected to the sensor cylinder (10).
    [0022]
    32. Method, according to claim 18, CHARACTERIZED by the fact that each sensor within a particular of the n sets (24) is located in a transverse position different from another sensor of the particular set (24).
    [0023]
    33. Method, according to claim 18, CHARACTERIZED by the fact that it comprises: adjusting the sensor cylinder (10) to reduce the variability of the die pressure profile.
    [0024]
    34. Method according to claim 18, CHARACTERIZED by the fact that: the first set (24) of sensors is arranged along the sensor cylinder (10) in a particular pattern and all other sets of n sensors are arranged in the same standard.
    [0025]
    35. Method for detecting and removing the effects of rotational variability of the wedge pressure profile of a sensor cylinder (10) of a wedge press, CHARACTERIZED by the fact that it comprises: providing a sensor cylinder (10) having a working length and a plurality of transverse positions arranged along the working length; placing multiple pressure measurement sensors in each transverse position, the sensors in each transverse position being circumferentially spaced from one another; measure the pressure exerted on each sensor at each transverse location as the sensor moves into the region of the press die; at each transverse position, average the pressure measurements from all sensors in that transverse position to determine an average pressure measurement at each transverse position; and use the average pressure measurements from each transverse position to provide a wedge pressure profile for the wedge press; in which the multiple pressure measurement sensors in each transverse position are arranged as n sets of sensors, where each sensor in one of the n sets has a corresponding sensor in the remaining n-1 sensors, each corresponding sensor being located in the same transverse and 3607n circumferentially spaced position of an adjacent sensor, each set of sensors forming a partial helix that extends about 3607n around the sensor cylinder (10); and adjust the sensor cylinder (10) to remove the effects of rotational variability of the wedge pressure profile of a sensor cylinder (10) of a wedge press
    类似技术:
    公开号 | 公开日 | 专利标题
    BR112015022351B1|2020-11-17|sensor cylinder for use in a wedge press, system for calculating and displaying a pressure profile for a wedge press and method for detecting and removing the rotational variability effects of the wedge pressure profile of a sensor wedge for a wedge press
    EP0809570B1|2003-04-23|Dynamic nip pressure sensing system
    RU2661466C2|2018-07-16|Method and system associated with a sensor shaft including the first sensor array, and a coupled shaft including the second sensor array for data shaft collection
    RU2683813C1|2019-04-02|Method and system associated with sensor shaft, including plurality of sensors, and conjugate shaft for shaft data collection
    RU2701254C2|2019-09-25|Method and system relating to sensor shaft and coupled shaft for collecting data on shafts
    CA2564391C|2011-12-13|Nip press sensing system including a sensor strip having sensor interface electronics associated therewith and methods of operating the same
    RU2668121C1|2018-09-26|Application rod control system and method
    EP3828338A1|2021-06-02|System and method for monitoring an applicator rod
    BR112016025635B1|2022-01-18|METHOD AND SYSTEM ASSOCIATED WITH A PERCEPTION ROLLER THAT INCLUDES PLURALITIES OF SENSORS AND A JOINING ROLLER TO COLLECT ROLLER DATA
    同族专利:
    公开号 | 公开日
    CA2904877A1|2014-10-09|
    RU2017141802A|2019-02-13|
    EP3517916A1|2019-07-31|
    BR112015022351A2|2017-07-18|
    CN105209875B|2018-09-07|
    EP3954978A1|2022-02-16|
    RU2638106C2|2017-12-11|
    EP2972168A1|2016-01-20|
    RU2685794C2|2019-04-23|
    CN108827515A|2018-11-16|
    RU2015143084A|2017-04-13|
    MY178550A|2020-10-15|
    US10941521B2|2021-03-09|
    WO2014163775A1|2014-10-09|
    CN105209875A|2015-12-30|
    RU2017141802A3|2019-02-13|
    PL2972168T3|2019-07-31|
    US20170114499A1|2017-04-27|
    PT2972168T|2019-05-09|
    EP3517916B1|2021-07-28|
    US20140257719A1|2014-09-11|
    PT3517916T|2021-10-01|
    PL3517916T3|2021-12-13|
    CN108827515B|2021-10-01|
    US9540769B2|2017-01-10|
    EP2972168B1|2019-01-16|
    CA2904877C|2017-11-21|
    US20210148049A1|2021-05-20|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US757221A|1900-03-30|1904-04-12|Frank W Page|Smelting-furnace.|
    US2300909A|1939-04-14|1942-11-03|Arthur E Broughton|Reciprocating shower|
    US3622448A|1968-02-16|1971-11-23|Industrial Nucleonics Corp|System and method of process control, particularly papermaking processes in response to fraction defective measurements|
    US3673865A|1971-04-21|1972-07-04|Westvaco Corp|Method and apparatus for orthogonal variables|
    US3840302A|1971-06-01|1974-10-08|D Brunton|Oscilloscope presentation of sheet profile from a scanning gage|
    JPS5418145B1|1971-06-08|1979-07-05|
    US3936665A|1972-06-12|1976-02-03|Industrial Nucleonics Corporation|Sheet material characteristic measuring, monitoring and controlling method and apparatus using data profile generated and evaluated by computer means|
    US3863453A|1974-02-19|1975-02-04|Dominion Eng Works Ltd|Oscillator system for paper machine|
    CA1014638A|1974-04-16|1977-07-26|Domtar Limited|Measuring the surface roughness of a moving sheet material|
    GB1507987A|1974-07-15|1978-04-19|British Steel Corp|Mill stand roll parameter monitor|
    US3989085A|1975-06-02|1976-11-02|Westvaco Corporation|Method and apparatus for leveling the cross-direction profile of stock slurry on a papermachine|
    CH604940A5|1975-12-08|1978-09-15|Escher Wyss Ag|
    US4092068A|1976-05-05|1978-05-30|Domtar Inc.|Surface sensor|
    US4152202A|1976-08-02|1979-05-01|Westvaco Corporation|Method and apparatus for leveling the cross-direction profile of stock slurry on a paper machine|
    US4090205A|1977-04-06|1978-05-16|The Mead Corporation|Apparatus and method for jet drop printing|
    DE2837913C2|1978-08-31|1982-10-21|ER-WE-PA Maschinenfabrik und Eisengießerei GmbH, 4006 Erkrath|Roller with controllable deflection, in particular for machines for producing and processing webs made of paper or plastic|
    DE3117398C2|1981-05-02|1987-08-06|Sulzer-Escher Wyss Ag, Zuerich, Ch|
    US4495587A|1981-12-08|1985-01-22|Bethlehem Steel Corporation|Automatic nondestructive roll defect inspection system|
    US4423636A|1981-12-08|1984-01-03|Bethlehem Steel Corporation|Articulated test probe mechanism with fluid bearing in test roll gap|
    SU1049600A1|1982-04-21|1983-10-23|Центральный Научно-Исследовательский И Проектно-Конструкторский Институт По Проектированию Оборудования Для Целлюлозно-Бумажной Промышленности|Board-making machine format roll|
    US4524546A|1983-06-06|1985-06-25|Armco Inc|Roll profile gauge|
    SE463269B|1984-04-11|1990-10-29|Sensodec Oy|PROCEDURE AND DEVICE TO LOCATE ERRORS IN THE FUNCTION OF A PAPER MACHINE PARTS|
    DE3516535C2|1985-05-08|1988-12-08|Kleinewefers Gmbh|
    US4879471A|1987-03-25|1989-11-07|Measurex Corporation|Rapid-scanning infrared sensor|
    US4898012A|1988-04-22|1990-02-06|United Engineering, Inc.|Roll bite gauge and profile measurement system for rolling mills|
    US4903528A|1988-09-26|1990-02-27|Measurex Corporation|System and process for detecting properties of travelling sheets in the cross direction|
    US4947684A|1989-01-27|1990-08-14|Measurex Corporation|System and process for detecting properties of travelling sheets in the machine direction|
    US4921574A|1989-01-27|1990-05-01|Measurex Corporation|Process for controlling properties of travelling sheets with scan widths less than the sheet width|
    US5022966A|1989-01-27|1991-06-11|Measurex Corporation|Process for controlling properties of travelling sheets|
    US5121332A|1989-03-31|1992-06-09|Measurex Corporation|Control system for sheetmaking|
    US5048353A|1990-03-01|1991-09-17|Beloit Corporation|Method and apparatus for roll profile measurement|
    US5122963A|1990-03-07|1992-06-16|Process Automation Business, Inc.|Actuation cell response and mapping determinations for web forming machines|
    US5125746A|1990-06-07|1992-06-30|Harold Lipshitz|Surface topography measurement apparatus and method|
    FI86771C|1991-10-14|1992-10-12|Valmet Paper Machinery Inc|FOERFARANDE OCH ANORDNING FOER MAETNING AV NYPKRAFTEN OCH / ELLER -TRYCKET AV ETT NYP SOM BILDAS AV EN ROTERANDE VALS ELLER ETT BAND SOM ANVAENDS VID FRAMSTAELLNING AV PAPPER|
    US5250348A|1991-12-09|1993-10-05|International Paper Company|Improved wrapper paper for use in very low contact pressure applications|
    FI89308C|1992-09-16|1993-09-10|Valmet Paper Machinery Inc|FOERFARANDE OCH ANORDNING FOER MAETNING AV NYPKRAFTEN OCH / ELLER -TRYCKET AV ETT NYP SOM BILDAS AV EN ROTERANDE VALS ELLER ETT BAND SOM ANVAENDS VID FRAMSTAELLNING AV PAPPER|
    US5400258A|1993-09-03|1995-03-21|Measurex Corporation|Automatic cross-directional control zone alignment for sheetmaking systems|
    US5563809A|1994-04-06|1996-10-08|Abb Industrial Systems, Inc.|Measurement/control of sheet material using at least one sensor array|
    GB9411908D0|1994-06-14|1994-08-03|John Heyer Paper Ltd|Web monitoring for paper machines|
    US5592875A|1994-09-16|1997-01-14|Stowe Woodward Licensco, Inc.|Roll having means for determining pressure distribution|
    US5562027A|1995-02-16|1996-10-08|Stowe Woodward Licensco, Inc.|Dynamic nip pressure and temperature sensing system|
    US5743177A|1996-02-29|1998-04-28|Union Camp Corporation|Enhanced cross-directional caliper control system|
    US5725737A|1996-09-18|1998-03-10|Pulp And Paper Research Institute Of Canada|Apparatus for the detection of holes and plugged spots|
    US6341522B1|1996-12-13|2002-01-29|Measurex Corporation|Water weight sensor array imbedded in a sheetmaking machine roll|
    US5960374A|1997-02-14|1999-09-28|International Paper Company|System for time synchronous monitoring of product quality variable|
    DE19742755A1|1997-09-27|1999-04-01|Roehm Gmbh|Process for achieving a stable regulation of the bead profile in the extrusion of sheets and foils made of thermoplastic|
    US6336078B1|1997-09-30|2002-01-01|Canon Kabushiki Kaisha|Quality management of components|
    EP1055197B1|1998-02-10|2003-04-09|Abb Industrial Systems Inc.|Method for extracting and classifying sheet variation patterns from two-dimensional sheet measurements|
    US6568285B1|1998-02-19|2003-05-27|Stowe Woodward Llc|Nip width sensing system and method|
    JP4416213B2|1998-08-06|2010-02-17|フォイトズルツァーパピーアテヒニクパテントゲゼルシャフトミットベシュレンクテルハフツング|Apparatus and method for actively dampening undesired vibrations of a rotating roll|
    US6356846B1|1998-10-13|2002-03-12|Institute Of Paper Science And Technology, Inc.|System and method of reducing motion-induced noise in the optical detection of an ultrasound signal in a moving body of material|
    US6370961B1|1999-01-29|2002-04-16|Constantin M. Trantzas|Nipped roller impression sensor system|
    DE19910197C1|1999-03-09|2000-10-26|Continental Ag|Monitoring system for rollers comprises integrated circuit transponder with read-write memory which is built-into roller core and stores data concerning roller application|
    US6519552B1|1999-09-15|2003-02-11|Xerox Corporation|Systems and methods for a hybrid diagnostic approach of real time diagnosis of electronic systems|
    US6934028B2|2000-01-20|2005-08-23|Webview, Inc.|Certification and verification management system and method for a web inspection apparatus|
    EP1130485A1|2000-03-01|2001-09-05|Hilzinger-Gummiwalzen GmbH & Co. KG|System and method for monitoring of a roll with a core and a sheath|
    US6427466B1|2000-12-12|2002-08-06|Celletra Ltd|Forced convection cooling system for electronic equipment|
    US6567720B1|2001-04-20|2003-05-20|Kerry D. Figiel|Method and apparatus for time synchronized measurement correction of multidimensional periodic effects on a moving web|
    FI114741B|2001-05-11|2004-12-15|Metso Automation Oy|Procedure for checking quality and condition on the basis of thermography|
    FI115163B|2001-11-29|2005-03-15|Metso Automation Oy|Quality and condition control according to spectrum discriminant measurement|
    DE10207501C1|2002-01-22|2003-10-23|Bfi Vdeh Inst Angewandte Forschung Gmbh|Full role for determining flatness deviations|
    US6805899B2|2002-01-30|2004-10-19|Honeywell International Inc.|Multi-measurement/sensor coating consolidation detection method and system|
    JP2003241535A|2002-02-20|2003-08-29|Ricoh Co Ltd|Belt moving device and image forming apparatus equipped therewith|
    DE10216069A1|2002-04-11|2003-10-23|Hauni Maschinenbau Ag|Method and device for acting on articles of the tobacco processing industry|
    US20040033377A1|2002-06-10|2004-02-19|Koenig Michael F.|Waterfast dye fixative compositions for ink jet recording sheets|
    US7608338B2|2002-06-13|2009-10-27|International Paper Company|High brightness coating compositions and related products|
    US7018708B2|2002-08-22|2006-03-28|International Paper Company|Gloss-coated paper with enhanced runnability and print quality|
    US7021159B2|2002-09-30|2006-04-04|The Gates Corporation|Transducer|
    DE10249385A1|2002-10-23|2004-05-06|Voith Paper Patent Gmbh|Method and device for monitoring the condition of a covering|
    SE0300127D0|2003-01-17|2003-01-17|Imego Ab|Indicator arrangement|
    DE10312464A1|2003-03-20|2004-09-30|Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.|Composition for the production of a thermoset with thermochromic properties|
    US7828935B2|2003-04-07|2010-11-09|International Paper Company|Papers for liquid electrophotographic printing and method for making same|
    DE10321865B4|2003-05-14|2013-06-27|Betriebsforschungsinstitut VDEh - Institut für angewandte Forschung GmbH|Measuring device for a longitudinally moving belt and measuring method for process parameters of a belt conveyor|
    US7185537B2|2003-06-04|2007-03-06|Metso Paper, Inc.|Nip and loading analysis system|
    US6950777B1|2003-07-29|2005-09-27|Voith Paper Inc.|Method and system for assessing pulp and paper mill performance|
    US7608166B2|2003-09-17|2009-10-27|International Paper Company|Papers having borate-based complexing and method of making same|
    DE10343418A1|2003-09-19|2005-04-21|Voith Paper Patent Gmbh|Apparatus and method for assessing the nature of at least one circulating belt|
    US6976900B2|2004-03-05|2005-12-20|United States Steel Corp.|Automatic roll data acquisition system|
    DE102004045418A1|2004-03-16|2005-10-06|Waldrich Siegen Werkzeugmaschinen Gmbh|Method and device for grinding a roller|
    CA2561097C|2004-05-14|2011-09-13|Stowe Woodward, L.L.C.|Nip width sensing system and method for elevated temperature environments|
    MXPA06013172A|2004-05-14|2007-02-13|Stowe Woodward Llc|Nip press sensing system including a sensor strip having sensor interface electronics associated therewith and methods of operating the same.|
    US20050261115A1|2004-05-14|2005-11-24|Myers Bigel Sibley & Sajovec, P.A.|Industrial roll with piezoelectric sensors for detecting pressure|
    US7392715B2|2004-10-29|2008-07-01|Stowe Woodward Ag|Wireless sensors in roll covers|
    FI20055019A|2005-01-17|2006-07-18|Metso Paper Inc|Measurement method for a web tension profile and this application roller|
    US7572214B2|2005-05-04|2009-08-11|Stowe Woodward L.L.C.|Suction roll with sensors for detecting operational parameters having apertures|
    US20070006644A1|2005-07-06|2007-01-11|Alcoa Inc.|Continuous web stress distribution measurement sensor|
    US8758886B2|2005-10-14|2014-06-24|International Paper Company|Recording sheet with improved image dry time|
    US7582188B2|2005-10-14|2009-09-01|Hewlett-Packard Development Company, L.P.|Composition and ink receiving system incorporating the composition|
    PL2290162T3|2006-01-17|2017-11-30|International Paper Company|Paper substrates containing high surface sizing and low internal sizing and having high dimensional stability|
    JP4940937B2|2006-02-28|2012-05-30|日本精工株式会社|Rotating machine state quantity measuring device|
    US20080173420A1|2006-12-11|2008-07-24|Jay Chen Song|Paper surface sizing composition, sized paper, and method for sizing paper|
    US8281671B2|2007-01-17|2012-10-09|Metso Paper, Inc.|Load measuring device, manufacturing method for the device and control method using the device|
    FI20075472A|2007-06-20|2008-12-21|Metso Paper Inc|Procedure for evaluating the condition / condition of the press felt in a paper machine or equivalent|
    JP4941258B2|2007-11-30|2012-05-30|ブラザー工業株式会社|Sheet edge detection apparatus and image recording apparatus including the same|
    WO2009092761A2|2008-01-24|2009-07-30|Metso Paper, Inc.|Papermaking coating station with pressure-sensitive film roll|
    US8652594B2|2008-03-31|2014-02-18|International Paper Company|Recording sheet with enhanced print quality at low additive levels|
    WO2009146416A1|2008-05-29|2009-12-03|International Paper Company|Fast dry coated inkjet paper|
    CN101591575A|2008-05-30|2009-12-02|汕头大学|The hydroxy fatty acid derivative Application of Additives that acts as a fuel|
    WO2010034321A1|2008-09-23|2010-04-01|Voith Patent Gmbh|Industrial roll with optical roll cover sensor system|
    ES2396050T3|2008-10-15|2013-02-18|International Paper Company|Composition, preparation process and application and exposure method for imaging paper using light|
    CN104656372B|2008-10-15|2016-08-24|国际纸业公司|Imaging particle compositions, paper and method and the use dual wavelength light method to paper imaging|
    US9097595B2|2008-11-14|2015-08-04|Stowe Woodward, L.L.C.|System and method for detecting and measuring vibration in an industrial roll|
    JP2010261119A|2009-05-02|2010-11-18|Seed:Kk|Dehydration device of waste paper-reclaiming apparatus and waste paper-reclaiming apparatus|
    FI8397U1|2009-05-27|2009-08-14|Metso Paper Inc|Device for making fiber web|
    US8346501B2|2009-06-22|2013-01-01|Stowe Woodward, L.L.C.|Industrial roll with sensors arranged to self-identify angular location|
    US8236141B2|2009-06-23|2012-08-07|Stowe Woodward, L.L.C.|Industrial roll with sensors having conformable conductive sheets|
    US8652593B2|2009-12-17|2014-02-18|International Paper Company|Printable substrates with improved brightness from OBAs in presence of multivalent metal salts|
    US8574690B2|2009-12-17|2013-11-05|International Paper Company|Printable substrates with improved dry time and acceptable print density by using monovalent salts|
    FI20105205A0|2010-03-03|2010-03-03|Pyynikki Engineering Oy|PROCEDURES AND ARRANGEMENTS FOR DEFINING THE ROLLER PROFILE AND / OR FOR CHECKING GRINDING|
    CN105214890B|2010-04-02|2017-07-18|阿德文尼拉企业有限公司|roll coater|
    US8608908B2|2010-04-02|2013-12-17|International Paper Company|Method and system using low fatty acid starches in paper sizing composition to inhibit deposition of multivalent fatty acid salts|
    US8440053B2|2010-04-02|2013-05-14|International Paper Company|Method and system using surfactants in paper sizing composition to inhibit deposition of multivalent fatty acid salts|
    US8586156B2|2010-05-04|2013-11-19|International Paper Company|Coated printable substrates resistant to acidic highlighters and printing solutions|
    WO2011148031A1|2010-05-25|2011-12-01|Metso Paper, Inc.|Method and apparatus for controlling a coating head, and a coating head|
    US8475347B2|2010-06-04|2013-07-02|Stowe Woodward Licensco, Llc|Industrial roll with multiple sensor arrays|
    CN103003492B|2010-07-23|2015-04-08|国际纸业公司|Coated printable substrates providing higher print quality and resolution at lower ink usage|
    WO2012067976A1|2010-11-16|2012-05-24|International Paper Company|Paper sizing composition with salt of calcium and organic acid products made thereby,method of using, and method of making|
    JP5724345B2|2010-12-07|2015-05-27|富士ゼロックス株式会社|Sheet measuring apparatus and image forming apparatus|
    WO2012113747A1|2011-02-25|2012-08-30|Voith Patent Gmbh|Paper machine roller having fibre bragg sensors|
    WO2012166835A1|2011-06-02|2012-12-06|Stowe Woodward Licensco, Llc|Nip width sensing method and system for industrial rolls|
    KR101110400B1|2011-09-30|2012-02-24|주식회사 우정메카트로닉스|Pipe connector assembly and pipe connection method using the same|
    BR112014013312B1|2012-01-17|2021-03-02|Stowe Woodward Licensco, Llc|method of determining the angular position of a roller, and industrial roller assembly|
    DE102012203035A1|2012-02-28|2013-08-29|Voith Patent Gmbh|Machine for producing a fibrous web|
    JP5660066B2|2012-03-19|2015-01-28|コニカミノルタ株式会社|Image forming apparatus|
    US9540769B2|2013-03-11|2017-01-10|International Paper Company|Method and apparatus for measuring and removing rotational variability from a nip pressure profile of a covered roll of a nip press|
    WO2014161755A1|2013-04-05|2014-10-09|Voith Patent Gmbh|Film press|
    EP2992137B1|2013-04-30|2018-08-01|Voith Patent GmbH|Sensor roll|
    US9731489B2|2013-05-29|2017-08-15|H.B. Fuller Company|Material application system|
    US10378980B2|2014-05-02|2019-08-13|International Paper Company|Method and system associated with a sensing roll and a mating roll for collecting roll data|
    US9804044B2|2014-05-02|2017-10-31|International Paper Company|Method and system associated with a sensing roll and a mating roll for collecting data including first and second sensor arrays|
    US9797788B2|2014-05-02|2017-10-24|International Paper Company|Method and system associated with a sensing roll including pluralities of sensors and a mating roll for collecting roll data|
    US9696226B2|2015-06-10|2017-07-04|International Paper Company|Count-based monitoring machine wires and felts|
    US9816232B2|2015-06-10|2017-11-14|International Paper Company|Monitoring upstream machine wires and felts|
    US9534970B1|2015-06-10|2017-01-03|International Paper Company|Monitoring oscillating components|
    US9677225B2|2015-06-10|2017-06-13|International Paper Company|Monitoring applicator rods|
    US10370795B2|2015-06-10|2019-08-06|International Paper Company|Monitoring applicator rods and applicator rod nips|
    US9863827B2|2015-06-10|2018-01-09|International Paper Company|Monitoring machine wires and felts|DE102012203035A1|2012-02-28|2013-08-29|Voith Patent Gmbh|Machine for producing a fibrous web|
    TW201404606A|2012-07-31|2014-02-01|Hon Hai Prec Ind Co Ltd|Testing apparatus for pinch roller|
    US9540769B2|2013-03-11|2017-01-10|International Paper Company|Method and apparatus for measuring and removing rotational variability from a nip pressure profile of a covered roll of a nip press|
    WO2014161755A1|2013-04-05|2014-10-09|Voith Patent Gmbh|Film press|
    US9804044B2|2014-05-02|2017-10-31|International Paper Company|Method and system associated with a sensing roll and a mating roll for collecting data including first and second sensor arrays|
    US10378980B2|2014-05-02|2019-08-13|International Paper Company|Method and system associated with a sensing roll and a mating roll for collecting roll data|
    US9797788B2|2014-05-02|2017-10-24|International Paper Company|Method and system associated with a sensing roll including pluralities of sensors and a mating roll for collecting roll data|
    US9816232B2|2015-06-10|2017-11-14|International Paper Company|Monitoring upstream machine wires and felts|
    US10370795B2|2015-06-10|2019-08-06|International Paper Company|Monitoring applicator rods and applicator rod nips|
    US9534970B1|2015-06-10|2017-01-03|International Paper Company|Monitoring oscillating components|
    US9696226B2|2015-06-10|2017-07-04|International Paper Company|Count-based monitoring machine wires and felts|
    US9863827B2|2015-06-10|2018-01-09|International Paper Company|Monitoring machine wires and felts|
    US9677225B2|2015-06-10|2017-06-13|International Paper Company|Monitoring applicator rods|
    FI20165144A|2016-02-25|2017-08-26|Valmet Technologies Oy|Method, system and computer program product for monitoring the fitness of a fiber web or finishing machine|
    TWI620703B|2016-07-25|2018-04-11|財團法人工業技術研究院|Roller with pressure sensor and r to r device|
    US10633220B2|2017-07-20|2020-04-28|Michael Van Deurse|Monitoring system for pneumatic core shafts and shaft adapters|
    WO2019055973A2|2017-09-18|2019-03-21|International Paper Company|Method and apparatus for controlling a fiber fractionation system|
    FI128717B|2018-06-05|2020-10-30|Valmet Technologies Oy|Method, system and computer program product for monitoring and controlling operating conditions in a fibre web or finishing machine|
    法律状态:
    2018-11-13| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2020-02-04| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-06-23| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-11-17| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 13/02/2014, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US13/792,859|2013-03-11|
    US13/792,859|US9540769B2|2013-03-11|2013-03-11|Method and apparatus for measuring and removing rotational variability from a nip pressure profile of a covered roll of a nip press|
    PCT/US2014/016228|WO2014163775A1|2013-03-11|2014-02-13|Method and apparatus for measuring and removing rotational variability from a nip pressure profile of a covered roll of a nip press|
    [返回顶部]