• 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:

    公开号:SU955878A3
    申请号:SU2983470
    申请日:1980-09-24
    公开日:1982-08-30
    发明作者:Кеан Андре
    申请人:Сесим (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to control devices and can be used to determine flatness defects that are pulled when the sheet material is moved during its rolling or stretching.
    A known scanning device for a flaw detector containing a flaw detector electronic unit, a rotating current collector, a tuning capacitor, a drum, and inductive sensors mounted in a spiral on the drum. When the drum rotates around its axis, moving simultaneously along the product's controlled surface during one revolution, the sensors sequentially scan adjacent areas, capturing a strip equal to the pitch of the helix from the sensors. The resultant of the sensors in the event of a defect in the metal surface creates on the parallel chain a high-frequency voltage surge, which is detected by the flaw detector and converted into a useful signal 1.
    The drawback of the device is the low accuracy of detection of defects in the flatness of the tensioned during the movement of the sheet material.
    A device for detecting flatness defects of a tension is known. when moving sheet material; containing a roller baffle, in contact with a moving sheet material and having an inner cylinder covered with thin
    10 by a cylindrical casing in which small cavities are made, extending to the lateral surface of the inner cylinder to form at least one
    15 groups of holes located continuously along this surface, the centers of which are arranged in a spiral, the axis of which is the axis of the roller-deflector, and one
    20 are angular distances defined as 237 / n, where n is an integer, when viewed in the direction of the axis of rotation of the roll cage, and each cavity contains one sensor, the movable part of which is located in, , the surface of a thin cylindrical housing, is designed for radial movement with respect to the roller deflector, and a signal receiving and processing unit with which the movable part of the sensors 23 is connected.
    The drawback of the device is the low accuracy of determining flatness defects at high speed of moving sheet material of continuous recording of signals and sensors.
    The purpose of the invention is to improve the accuracy of determining flatness defects of sheet material.
    To achieve this goal, the sensors are made in the form of primary and secondary windings with a movable ferromagnetic core intersecting them with a movable part of the sensor, and the device is equipped with an optical coding system and a programmable control unit whose input is connected to the output of the optical coding system, and the output is connected with a pulsed current source of the primary windings of each sensor, and a unit for receiving and processing signals, connected to the secondary windings of sensors, contains b c, measuring the secondary current value at a predetermined point, the input unit to the memory of all the digital values, each sensor sootvetStvukvdih under load and baa load, and image block results readings of each sensor.
    The sensors are installed in cavities by several groups arranged successively in the axial direction of the deflector roller, while the respective cavities of each group are offset relative to one another in the axial direction of the deflector by a constant angle smaller than the angle equal to the angular distance of the cavities of the same groups.
    Two identical groups of sensors are placed in a cavity symmetrical in pairs with respect to the axis of the roller deflector, with the alternate functioning of each group of sensors being provided.
    Figure 1 shows the device installed at the output of the rolling mill, a general view; figure 2 roller-baffle without a thin outer cylindrical casing, front view; on fig.Z - section aa in figure 2; figure 4 is a section in figure 2; Fig. 5 shows the end of the valicadelector, where the signals from the sensors are taken, section.
    The device comprises a roller-deflector 1 located parallel to the rollers 2 of the rolling mill in the direction of movement of the sheet
    MATERIAL 3 and constantly in contact with the sheet material 3.. A collector 4 is located at the end of the deflector roller 1, the signals from which are transmitted via cable 5 to the signal receiving and processing unit 6, which is connected via cable 7 to block 8 for displaying the results of each sensor, which has screen 9 for displaying measurement results. In this case, the roller deflector 1 consists of a thin cylindrical casing 10 covering the inner cylinder 11 in which cavities 12 23 are made, which are arranged in spirals around the roller deflector 1, the groups each of which consists of n cavities (n is chosen equal to 4 and are denoted by the positions a, b, c, d) unfold from one another at angular distances, defined by the value 2J7 / n, when viewed in the direction of the axis of rotation of the roller-deflector 1, and evenly spaced from one another d d along the length of the valicaflector 1. In each A sensor 24 is installed on the cavity. (The entire length of the roller deflector 1 contains twelve groups of four cavities). Two identical groups of sensors 24 are placed in a cavity 12 and 13, symmetrical in pairs with respect to the axis of the roller-deflector 1 (FIG. 3). With this (Fig. 4), the next pair of groups of sensors 24, located in cavities 1 and 15, whose centers are also arranged in spirals with the same angles of distance, but with a slight shift cL, for example 2 °. Sensor 24. Contains a fixed part having two windings wound one over the other and forming one primary winding, and the other secondary winding of a current transformer, the common ferromagnetic core of which is located on the axis of both windings is connected by a moving part 25 in contact with the outer thin cylindrical casing 10 The circuits of the primary windings of each sensor 24 are electrically connected to one of the rings of the collector 4 when current is applied to it by means of a pin, 26, and the circuits of the secondary windings of each sensor 24 also connect electrically dinene with one of the rings of the collector 4 for removing the signal .. Contact brushes 26 of the collector 4 are electrically connected to unit 6 for receiving and processing signals through cable 5.,
    权利要求:
    Claims (3)
    [1]
    At the end of the axis of the inner cylinder 11 of the deflector roller 1, an optical coding system 27 is installed in the collector 4 with a 1024 position of the MDIL to accurately determine the angular position of the roller deflector 1. The output of the optical coding system is connected to the input of the programable control unit, the output of which is connected to a pulse source Nickname of the current of the primary windings of each sensor 24, and the unit 6 for receiving and processing signals, connected to the secondary windings of the sensors 24, contains a unit for measuring the magnitude of the secondary current at a given moment All the digital values corresponding to each sensor 24 are under load and without it. The device works as follows. When the sheet material 3 is passed through the roller-deflector 1, the thin cylindrical casing 10 of the roller-deflector 1 is deformed at the level of each cavity where the sensor 24 is located, which is transmitted to its movable part 25 which is in contact with the inner surface of the thin cylindrical housing 10. Considering that the sensors 24 in different groups are shifted to a certain angle and therefore only one sensor 24 at each time point will function on the uppermost component. Valve-deflector 1 program block The control sends a current pulse to the primary winding of each sensor 24 at the moment when it is under load of the sheet material 3 in the upper part of the roller-deflector 1. The current in the secondary winding of the sensor 24 depends on the position of the ferromagnetic core formed by the movable part 25 and The movement function of the movable part 25, i.e. tensioning the sheet material 3, which characterizes the internal stresses in the sheet material 3, caused by flatness defects. The measured value of the current in the secondary winding of the sensor 24 enters the signal receiving and processing unit 6, where it is converted into digital value and stored to determine the difference between the values of the current under load and without it for the same sensor 24, i.e. when sensor 24 is in the zone covered by the sheet material 3 and when it moves away from that zone. This makes it possible to increase the accuracy of determining the tension of the sheet material 3. The same operations are performed sequentially with respect to all sensors 24, which are in cavities 12 to 23, and the magnitude of the currents, which characterizes the tension value, is determined. width 3 3, covering sheet of roll-deflector 1 at the level of sensors 24. The calculated values of the currents of the secondary windings of the sensors 24 are received in block 8 of the image of the results of readings of each sensor on the screen 9 displaying the measurement results. It should be noted that sensors 24, which are in symmetric groups, such as even ones, are redundant and can be used if one or more sensors of the main groups are out of order. Thus, the implementation of sensors 2 4 in the form of containing the primary winding and the secondary winding with a movable ferromagnetic core intersecting it with the movable part 25 of the sensor 24, and supplying the device with an optical coding system 27 and a programmable control unit improves the accuracy of determining flatness defects nat when moving the sheet material 3 and measuring the magnitude of the tension across the entire width in the sheet material 3 at any of its movement speed. The device is not limited to the above implementation, where the distance d was chosen in the order of 60 mm, and the angular distance between the width 1I was determined to be 45 °, and in the case of control of sheet material 3 of smaller width, fewer sensors 24 can be used. spirals enveloping the roller-deflector 1. When eprm, various means of displaying the measurement results can be used (5rnii in the form of a digital or graphical form, and Rolling mill rolls. The device can be used not only at the exit of the cold rolling mill for thin sheet materials 3, but also in conjunction with any installation for processing sheet materials 3, for which it is very important to obtain very good flatness. the flatness of the tensioned sheet when moving, containing a roller-deflector in contact with the moving sheet material and having an internal cylinder covered with a thin qi a casing in which small cavities are emitted emerging on the lateral surface of the inner cylinder to form at least one group of holes located continuously along this surface, the centers of which are arranged in a spiral, the axis of which is the axis of the roller-deflector, and one from the other at angular distances x defined by the value 2J / n, where .n is an integer number, when viewed in the direction of the axis of rotation of the roll-deflector, and in each cavity there is one sensor, the movable part of which In contact with the inner surface of the thin cylindrical casing, it is designed to radially move with respect to the roller-deflector, and the signal receiving and processing unit, to which the movable part of the sensors is connected, is t - l and. This is so that, in order to improve the accuracy of determining flatness defects of sheet material, each sensor is made in the form of primary and secondary windings with a ferromagnetic-core that intersects their mobility and connected to the moving part of the sensor, and the device is equipped with an optical system coding and programmable control unit, the input of which is connected to the output of the optical coding system, and the output is connected to a pulsed current source of the primary windings of the sensors, and the signal receiving and processing unit nny with secondary windings sensors comprises a measurement of the magnitude of the secondary current at a predetermined point, the block memory vvoda.v all digital values corresponding to each sensor under load and without load, and a block izobrs1zheni results readings of each sensor.
    [2]
    2, the device according to claim 1, characterized in that the sensors are installed in cavities by several groups located (sequentially, tel. But in the axial direction of the camber, and the corresponding cavities of each group are shifted
    in relation to one another in the axial direction of the deflector roller by a constant angle less than the angle equal to the angular distance of the cavity of the same group.
    [3]
    3. The device according to paragraphs. 1 and 2, characterized in that two identical groups of sensors are placed in cavities symmetrical in pairs with respect to the axis of the roller-deflector, with alternate functioning of each group of sensors being provided.
    Sources of information taken into account in the examination
    1. USSR Author's Certificate No. 411366, cl. G 01 N 27/82, 1971.
    2. For the patent for the Federal Republic of Germany No. 1804925, cl. G 01 E, 1968.
    类似技术:
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    同族专利:
    公开号 | 公开日
    ES495530A0|1981-10-16|
    EP0028191B1|1983-06-29|
    FR2468878A1|1981-05-08|
    ES8200244A1|1981-10-16|
    BR8006311A|1981-04-28|
    US4356714A|1982-11-02|
    AT4005T|1983-07-15|
    JPS5667728A|1981-06-08|
    FR2468878B1|1981-10-16|
    JPS6225979B2|1987-06-05|
    EP0028191A1|1981-05-06|
    DE3063988D1|1983-08-04|
    CA1147423A|1983-05-31|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE1264100B|1964-02-13|1968-03-21|Asea Ab|Arrangement in strip rolling mills for measuring the distribution of strip tension across the strip width|
    DE1573407B1|1965-10-05|1970-09-03|Asea Ab|Arrangement in strip rolling mills to measure the distribution of the strip tension over the strip width|
    JPS595135B2|1975-09-03|1984-02-02|Sekisui Plastics|
    DE2630410C2|1976-07-06|1988-03-03|Betriebsforschungsinstitut Vdeh-Institut Fuer Angewandte Forschung Gmbh, 4000 Duesseldorf, De|
    JPS5468283A|1977-10-31|1979-06-01|Betr Forsch Inst Angew Forsch|Structure for measuring distribution of straining force in flexible plate in direction of width|JPH028648B2|1980-11-12|1990-02-26|Showa Sheru Sekyu Kk|
    US4445349A|1981-11-17|1984-05-01|White Consolidated Industries, Inc.|Variable crown roll shape control systems|
    DE3335766A1|1983-10-01|1985-04-11|Leybold-Heraeus GmbH, 5000 Köln|ARRANGEMENT FOR THE ELECTRICAL MEASUREMENT OF LAYER THICKNESSES ON RUNNING TAPES|
    FR2553312B1|1983-10-14|1987-05-22|Clecim Sa|METHOD FOR ADJUSTING THE THICKNESS AND PROFILE OF A FLAT PRODUCT DURING LAMINATION|
    FR2602327B1|1986-07-30|1990-11-09|Clecim Sa|TAPE CONTROL ROLLER AND METHOD FOR PRODUCING THE SAME|
    FR2607242B1|1986-11-20|1991-01-04|Clecim Sa|TAPE PROFILE CONTROL ROLL|
    FR2607919B1|1986-12-04|1989-03-31|Clecim Sa|DEVICE FOR MEASURING PLANAR DEFECTS OF A WEB|
    FR2682762B1|1991-10-17|1994-01-14|Sollac|PROCESS FOR THE CONTINUOUS MEASUREMENT OF THE MECHANICAL CHARACTERISTICS OF A STRIP, ESPECIALLY A STEEL STRIP, PRODUCED IN CONTINUOUS.|
    US5901591A|1996-04-29|1999-05-11|Tippins Incorporated|Pinch roll shapemetering apparatus|
    SE517543C2|2000-07-07|2002-06-18|Abb Ab|Transport roller with sensors and cylinders composed of means with reduced cross section and manufacture and system for measurement with this|
    SE0100698D0|2001-03-01|2001-03-01|Abb Ab|A system and method for measuring and determining flatness|
    US6668626B2|2001-03-01|2003-12-30|Abb Ab|System and a method for measuring and determining flatness|
    FR2823300B1|2001-04-10|2003-09-05|Vai Clecim|PLANEITY DEFECT DETECTION METHOD|
    DE10207501C1|2002-01-22|2003-10-23|Bfi Vdeh Inst Angewandte Forschung Gmbh|Full role for determining flatness deviations|
    US20070006644A1|2005-07-06|2007-01-11|Alcoa Inc.|Continuous web stress distribution measurement sensor|
    US20100219964A1|2005-08-05|2010-09-02|Hunt Kevin G|Method and System for Detecting Faults in Sheet Material|
    WO2015154985A1|2014-04-11|2015-10-15|Tetra Laval Holdings & Finance S.A.|Roller device comprising temperature sensor for sensing temperature of packaging material|
    FR3077999B1|2018-02-22|2020-03-20|Commissariat A L'energie Atomique Et Aux Energies Alternatives|PLANEITY ROLL, PLANEITY MEASURING SYSTEM AND LINE OF ROLLING OPERATIONS THEREOF|
    RU2716267C1|2019-10-24|2020-03-11|Общество С Ограниченной Ответственностью "С-Инновации" |Method of diagnosing conveying and measuring rollers during production of high-temperature superconducting tape|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR7926618A|FR2468878B1|1979-10-26|1979-10-26|
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