• 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:
    A card with a measuring system for detecting the deformation of at least one component of the card comprises at least one measuring rod (10), the first end of which is mounted on a fixed bearing (21) arranged on the at least one component of the card, and the second end of which is mounted on or is mounted on a floating bearing (22), as well as a sensor (23) which can detect its distance from the second end of the dipstick (10).
    公开号:CH712966B1
    申请号:CH01165/17
    申请日:2017-09-21
    公开日:2021-08-31
    发明作者:-Ing Andreas Sobotka Dr
    申请人:Truetzschler Gmbh & Co Kg；
    IPC主号:
    专利说明:

    The invention relates to a card with a measuring system for detecting the deformation of at least one component according to the preamble of claim 1 and an associated method according to the preamble of claim 11.
    During carding, the card is heated on the one hand by the carding process, on the other hand by the mechanical components such as the friction in the bearings or the waste heat from the motor. As a result of this, the individual components of the card also heat up and thus expand thermally and thus enlarge. This also changes the carding gap, which is accompanied by a change in the quality of the carded sliver. According to the prior art, the carding gaps are determined indirectly by measuring the temperatures of the components and thus calculating the carding gaps on the basis of a learned algorithm.
    According to DE 4235610C2, at least one sensor is used to measure the carding gap, which sensor is arranged in the cover and opposite the clothing of the roller. This means that only the change in the carding gap can be determined, but not the thermal change or deformation of individual components, such as the side plate.
    In DE 102009031978A1 and DE 102009031979A1, the working distance of the rollers from one another is set by means of an adjusting device when the temperature changes. The adjustment device is designed as a spring-loaded cylinder, the piston of which is adjusted by a heat-sensitive fluid against the spring force. A temperature-dependent positioning movement is generated by the piston rod. In these documents, only the changes in the carding gap are determined and compensated for.
    It is the object of the invention to provide a card with a measuring system in which the deformation of at least one component can be determined reliably and inexpensively. A further object of the invention is to create an associated method with which the deformation of at least one component can be determined reliably and inexpensively.
    According to the invention, this object is achieved by a card with the features of independent claim 1 and by a method with the features of independent claim 11. Advantageous configurations of the card according to the invention and of the method are the subject matter of the dependent claims.
    The invention is explained in more detail below with reference to a possible schematically illustrated embodiment. It shows: FIG. 1: a schematic representation of a section of a card according to the invention; FIG. 2: a schematic representation of a card according to the invention with a side plate; FIG. 3: a further schematic representation of a card according to the invention.
    In the section of the inventive card in Figure 1, the principle of the invention is shown in which a measuring stick 10 is mounted with its first end 11 on a fixed bearing 21 (fixed bearing). The measuring rod 10 consists of a material which has no or almost no thermal expansion, for example a carbon fiber composite material with a coefficient of thermal expansion (in the longitudinal direction of the fibers) of -0.1 × 10 <-6> / K to 0.2 × 10 <-6> / K, which corresponds to a fraction of the thermal expansion coefficient of steel with 10.6 × 10 <-6> / K to 14 × 10 <-6> / K. The fixed bearing 21 can be arranged on a machine structure or a frame 20 or machine frame, for example the central bearing 32 of a carding drum 31 (see FIG. 2). The second end 12 of the dipstick 10 is mounted on or on a floating bearing 22. A sensor element 23 (sensor) is assigned to this second end 12 of the measuring rod 10 and is also fixedly arranged on the frame 20. The sensor element 23 can determine the distance difference by means of laser beams, operate by means of induction or be designed as a capacitively measuring sensor. Due to the thermal expansion of the frame 20, the distance between the fixed bearing 21 of the measuring rod 10 and the arrangement of the sensor 23 changes second end 12 of the measuring rod 10 and the sensor 23. A reference surface 13, the distance of which from the sensor 23 is detected by the sensor 23, can be arranged at the second end 12 of the measuring rod 10. This reference surface 13 can, for example, be arranged on the end face of the second end 12 of the measuring stick 10 and be reflective. According to a first exemplary embodiment below, the measuring system can be used to determine the extent of a single component.
    Alternatively, the measuring system can be used according to a second embodiment for determining the change in distance between two components. The fixed bearing 21 can have a first component and the floating bearing 22 can have a second component, both of which are arranged on a common frame 20. The measuring rod 10 moves according to the thermal change of the frame 20 on or above the floating bearing 22, whereby the change in distance to the sensor 23 is detected.
    Figure 2 shows a partial section through a card 30. The fixed bearing 21 for the dipstick 10 is arranged on the bearing 32 of the carding drum. The floating bearing 22 for the second end 12 of the measuring rod 10 can be arranged on the wedge strip 33 of the cover on which the rotating flat rods are guided. Alternatively, the floating bearing 22 can also be arranged on the side plate 37, so that the thermal change of only one component is measured. The sensor 23 for detecting the change in distance is also arranged here.
    Due to the thermal heating and thus expansion of the entire card 30, according to the invention, the carding gap cannot be measured directly, but the determination of the carding gap is considerably improved.
    A bilateral arrangement of a measuring stick 10 on the carding drum 31bzw. on the side plate 37 is advantageous if one-sided heating occurs, for example due to a one-sided fiber feed into the card, so that the distance between flat rod and carding drum 31 changes over the working width. In this way, for example, a side flight can be concluded, which is reduced by tilting the carding elements on one side.
    In the second embodiment of Figure 3, the measuring stick 10 is attached or arranged with its first end 11 on the central bearing 32 of the carding drum 31. The second end 12 with the floating bearing 22 is arranged on the bearing of the doffer 36. The sensor 23 is attached to the doffing drum 36 or to the side plate 37 opposite the reference surface. In this way, the change in distance and thus indirectly the distance X between the doffing drum 36 and the carding drum 31 can be determined and changed via mechanical or motorized devices.
    With the invention, the carding gap cannot be measured directly, but the determination of the carding gap is considerably improved.
    The change in the carding gap Δd on the cover can be calculated using the following equation. The changes in length of the side plate ΔIS, the carding drum ΔITt and the cover ΔID due to the temperature changes in the process are included in this equation. Furthermore, the expansion of the centrifugal force of the carding drum ΔITn is included in the calculation of the carding gap. The coefficients Ai (A1, A2, A3) are determined by means of a calibration measurement in which various operating situations are examined with a measuring cover. On this basis, the coefficients can be determined iteratively by interpolation.Δd = ΔIS- ΔITt-ΔITn- ΔIDΔID = A1αSΔTS- A2αTΔTT- A3 (nT) <2> - A4αDΔTDAiKoeffizient αSWärmeausdehnungskoeffizient of the side plate of the carding drum αTWärmeausdehnungskoeffizient αDWärmeausdehnungskoeffizient the lid .DELTA.d change of the carding ΔISLängenänderung side plate ΔITtLängenänderung carding drum carding ΔITnFliehkraftaufweitung ΔIDLängenänderung lid ΔTSTemperaturänderung of the side plate of the carding drum ΔTTTemperaturänderung ΔTDTemperaturänderung of the cover of the carding drum nTDrehzahl
    By directly determining the change in length of the side plate .DELTA.IS with the measuring system according to the invention, the accuracy of the calculation of the carding gap can be increased. The variable of interest is therefore measured directly instead of being determined indirectly in the form of auxiliary variables.
    In the same way, the determination of the distances between other machine elements can be optimized.
    By combining several such measuring systems, deformations of individual components can also be determined. With the help of a kinematic model of the machine, several measuring systems on different components can be used to calculate the change in distance between them. The system consequently offers the possibility of better recording the thermal behavior of a machine in real operation using measurement technology and thus enables the machine to be adapted more precisely to the operating conditions.
    权利要求:
    Claims (13)
    [1]
    1. Card (30) with a measuring system for detecting the deformation of at least one component of the card, characterized by at least one measuring rod (10), which with its first end (11) on a fixed bearing (21) arranged on the at least one component of the card is mounted, and the second end (12) is mounted on or on a floating bearing (22), and by a sensor (23) which can detect its distance from the second end (12) of the dipstick (10).
    [2]
    2. Card according to claim 1, characterized in that the at least one component of the card comprises a first component and a second component that the first end (11) of the dipstick (10) is mounted on the fixed bearing (21) which is attached to the first component is arranged that the second end (12) of the measuring rod (10) is mounted on the floating bearing (22) which is arranged on the second component, and that the sensor (23) is arranged on the second component and its distance can detect the second end (12) of the dipstick (10).
    [3]
    3. Card according to claim 1, characterized in that the at least one component is designed as a side plate (37) of the card.
    [4]
    4. Card according to claim 2, characterized in that the second component is designed as a wedge bar (33) or doffer (36) or side plate (37) or cover (38) of the card.
    [5]
    5. Card according to claim 1, characterized in that the measuring rod (10) consists of a material which has a coefficient of linear expansion in the range from -0.1 × 10 <-6> / K to 0.2 × 10 <-6> / K.
    [6]
    6. Card according to claim 5, characterized in that the coefficient of linear expansion of the material of the measuring rod (10) is a maximum of 1/50 of the coefficient of linear expansion of the material of the at least one component of the card.
    [7]
    7. Card according to claim 5 or claim 6, characterized in that the measuring rod (10) consists of a carbon fiber composite material.
    [8]
    8. Card according to claim 3, characterized in that the fixed bearing (21) is arranged on a central bearing (32) of the carding drum (31) in the side plate (37) of the card.
    [9]
    9. Card according to claim 1, characterized in that the sensor (23) has a laser, or is designed as an inductive or capacitive sensor.
    [10]
    10. Card according to claim 1 or 2, characterized in that two measuring rods are arranged on both sides of the at least one component of the card.
    [11]
    11. A method for detecting the deformation of at least one component of a card (30) with a measuring system, characterized by at least one measuring rod (10), which with its first end (11) on a fixed bearing (21) arranged on the at least one component of the card is mounted, and the second end (12) is arranged on or on a floating bearing (22), and by a sensor (23), wherein the sensor (23) detects its distance from the second end (12) of the dipstick (10).
    [12]
    12. The method according to claim 11, characterized in that the at least one component of the card comprises a first component and a second component that the first end (11) of the dipstick (10) is mounted on the fixed bearing (21) which is attached to the first component is arranged that the second end (12) of the measuring rod (10) is mounted on the floating bearing (22) which is arranged on the second component, and that the sensor (23) is arranged on the second component and its distance detected to the second end (12) of the dipstick (10).
    [13]
    13. The method according to claim 12, characterized in that to detect the change Δd in the carding gap between a carding drum (31) as the first component and a flat rod as the second component, the length changes ΔIS of a side plate (37) of the card (30), the length change ΔITt of the carding drum (31), the centrifugal force expansion ΔIT of the carding drum (31) and the change in length ΔID of a cover of the card are recorded and processed.
    类似技术:
    公开号 | 公开日 | 专利标题
    DE4235610C2|2002-07-18|Device on a spinning preparation machine, e.g. B. card, cleaner or the like, for measuring distances on sets
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    DE69919538T2|2005-09-08|METHOD AND DEVICE FOR CONDITIONING A ROLL, IN PARTICULAR A ROLLER IN A PAPER MANUFACTURING OR FINISHING DEVICE
    DE2813719C2|1981-09-17|Device for measuring the flatness of metal strips
    DE10331064B4|2007-10-04|Device for processing a material web
    EP1262280A1|2002-12-04|Apparatus for roller burnishing the corner portions of journals of crankshafts
    DE69824036T2|2004-10-28|METHOD FOR DETECTING CLEANING AND / OR DAMAGING A SURFACE WHEN IT&#39;S RUNNING IN A PAPER CALENDAR
    CH696667A5|2007-09-14|Apparatus at a spinning preparation machine for determining distances.
    CH626123A5|1981-10-30|
    DE102005052142B4|2020-10-08|Device on a card with a drum, carding elements and adjustable holding elements
    DE102016106780A1|2017-10-19|Device on a card or card
    EP2344286A1|2011-07-20|Method and device for determining a flatness of a metal strip
    EP0035009B1|1983-07-06|Device for supporting the working roll of a sheet bending or levelling machine
    CH712966B1|2021-08-31|Card.
    DE102007026569B4|2013-07-11|Method for determining bearing damage on a cylinder of a rotary printing machine
    DE4115960A1|1992-11-19|Carding roller adjustment while roller is in operation - uses at least one parameter of carded web to set appts.
    DE102005013637B3|2006-08-10|Method for rolling the recesses or radii on transitions between bearing pins and sides or flanges of crankshafts with the aid of a rolling unit comprises measuring on the hinge the penetration depth of the rollers in the recesses or radii
    DE10327469B4|2016-03-10|Sliver cross-section measuring device
    DE10259629B4|2005-09-22|Brake or clutch lining with integrated force measurement
    DE19725726C2|2000-08-03|Method for measuring flatness of strips, in particular metal strips
    EP1596002B1|2008-05-07|Papermaking machine
    DE19927760A1|2000-12-21|Device and method for the thermographic examination of functional surfaces on forming tools
    EP2691571B1|2017-06-28|Pressure-zone regulation for a scraper
    EP3431642B1|2020-02-26|Method for operating a preparation machine for spinning and device
    DE10013743B4|2009-03-19|Device for contacting thickness measurement of sheet material
    同族专利:
    公开号 | 公开日
    CH712966A2|2018-03-29|
    DE102016117872A1|2018-03-22|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE4235610C2|1992-10-22|2002-07-18|Truetzschler Gmbh & Co Kg|Device on a spinning preparation machine, e.g. B. card, cleaner or the like, for measuring distances on sets|
    DE102009031978A1|2009-07-06|2011-01-13|TRüTZSCHLER GMBH & CO. KG|Device on a card or carding machine for adjusting the working distance between the drum and at least one adjacent roller|
    DE102009031979A1|2009-07-06|2011-01-13|TRüTZSCHLER GMBH & CO. KG|Device on a card or card with a drum, working elements and adjustable holding elements|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102016117872.1A|DE102016117872A1|2016-09-22|2016-09-22|teasel|
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