JP2007001068A - Wire angle calculating method of sheetlike member and wire angle calculating apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wire angle calculating method of a sheetlike member capable of accurately calculating the cutting angle of wires while cutting the sheetlike member, and a wire angle calculating apparatus. <P>SOLUTION: The change in magnetism due to the wires of the sheetlike member 400 is detected by detectors 120A and 120B, the positions e1 and e2 of the wires of both ends in the width direction of the sheetlike member 400 and the distance LA between the detecting positions of the wires of both ends in the width direction of the sheetlike member 400 are respectively detected on the basis of the positions of the detectors 120A and 120B when the detected magnetism changes, the magnetism at the position separated from a cutter 230 by a predetermined distance in the longitudinal direction of the wires is detected by a magnetic resistance detector, the positions e1 and e2 of the wires of both ends in the width direction of the sheetlike member 400 and the distance LB between the detecting positions of the wires of both ends in the width direction of the sheetlike member 400 are respectively detected on the basis of the position of the cutter 230 when the detected magnetism changes and the angle of the wires with respect to the cutting direction of the sheetlike member 400 is calculated on the basis of the calculated distances LA and LB. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention provides, for example, a wire angle of a sheet-like member for calculating a wire cutting angle while cutting a sheet-like member formed by coating a rubber member on a plurality of metal wires with a cutter in a tire manufacturing process. The present invention relates to a calculation method and an apparatus therefor.

  A sheet-like member formed by coating a rubber member on a plurality of metal wires arranged in parallel in the width direction, such as a carcass material or a belt material of a tire, is 90 degrees or 20 to 30 with respect to the longitudinal direction of the wire. Although it cut | disconnects to predetermined angles, such as a degree, it may be unable to cut | disconnect to the angle according to a specification, and it is necessary to test | inspect whether the cutting angle of a sheet-like member satisfy | fills a required precision.

  For this reason, conventionally, the length of the cut surface and the length of the width of the sheet-like member have been measured to determine the wire cutting angle. However, since the so-called ear rubber is formed at both ends in the width direction of the sheet-like member, and the amount (length) of the ear rubber is not constant, the length of the cut surface of the sheet-like member including the ear rubber and Even if the length of the width was measured to determine the cutting angle, it could not be said that the cutting angle of the wire was accurately calculated.

Conventionally, as this type of angle measuring device, a cord ply cord angle measuring method for inspecting an inclination angle of a cord including a conductive cord, which is obliquely arranged in parallel to each other and parallel to the ply length direction, with respect to the tire equator. The electrode rows are arranged so as to be in contact with both end surfaces in the width direction of the cord ply where the cord is exposed after being cut, and the inclination angle of the cord is inspected from the position of each electrode where conduction is detected through the cord. What was made into is known (for example, refer patent document 1).
Japanese Patent Laid-Open No. 2002-59489

  However, in the conventional device disclosed in Patent Document 1 described above, after the cord ply is cut, continuity is detected through the cords exposed by the electrode rows arranged on both end faces, and the cord ply is cut. The inclination angle can be inspected only after the cord is exposed on the cut surface.

  In view of the above problems, an object of the present invention is to provide a wire angle calculation method and apparatus for a sheet-like member that can accurately calculate the cutting angle of the wire while cutting the sheet-like member.

  In order to achieve the above object, the present invention provides a sheet-like member formed by coating a plurality of metal wires arranged in parallel to each other in the width direction with a rubber member in a direction that forms a predetermined angle with the longitudinal direction of the wire. A wire angle calculation method for a sheet-like member that calculates an angle of a wire with respect to a cutting direction while cutting with a moving cutter, wherein the sheet is configured so that a change in magnetism due to the wire on the surface of the sheet-like member is orthogonal to the wire Detecting by the first magnetic detector moving in the width direction of the sheet-like member, and detecting the positions of the wires at both ends in the width direction of the sheet-like member based on the position of the first magnetic detector when the detected magnetism changes In addition, the distance between the detection positions of the wires at both ends in the width direction of the sheet-like member is calculated as a first distance, and the length of the wire from the cutter and the cutter is calculated. Wires at both ends in the width direction of the sheet-like member based on the position of the cutter when the magnetism between the position separated by a predetermined distance in the direction is detected by the second magnetic detector that moves with the cutter and the detected magnetism changes The distance between the detected positions of the wires at both ends in the width direction of the sheet-like member is calculated as a second distance, and the first distance and the second distance are defined as two sides of a right triangle. A wire angle calculation method for calculating the wire angle from the above is proposed.

  In order to achieve the above object, according to the present invention, a sheet-like member formed by coating a rubber member on a plurality of metal wires arranged parallel to each other in the width direction is formed at a predetermined angle with the longitudinal direction of the wire. A wire angle calculation device for a sheet-like member that calculates an angle of a wire with respect to a cutting direction while cutting with a cutter that moves in a direction, wherein the first magnetic detection detects a change in magnetism due to the wire on the surface of the sheet-like member , Magnetic detector position detecting means for detecting the position of the first magnetic detector, and magnetic detector moving means for moving the first magnetic detector in the width direction of the sheet-like member so as to be orthogonal to the wire A second magnetic detector for detecting magnetism between the cutter and a position separated from the cutter by a predetermined distance in the longitudinal direction of the wire, and detecting the position of the cutter Based on the position of the first magnetic detector when the magnetism detected by the first magnetic detector is changed, and the cutter moving means for moving the cutter together with the second magnetic detector. In addition to detecting the positions of the wires at both ends in the width direction of the sheet-like member, the distance between the detection positions of the wires at both ends in the width direction of the sheet-like member is calculated as the first distance and detected by the second magnetic detector The position of the wire at both ends in the width direction of the sheet-like member is detected based on the position of the cutter when the magnetism changed, and the distance between the detection positions of the wires at both ends in the width direction of the sheet-like member is set to the second A wire angle calculation device configured to calculate a wire angle from the relationship between the first distance and the second distance as two sides of a right triangle is calculated as a distance. That.

  According to the present invention, the first magnetic detector detects a change in magnetism due to the wire on the surface of the sheet-like member, and the width of the sheet-like member is determined based on the position of the first magnetic detector when the detected magnetism changes. The positions of the wires at both ends in the direction are detected, and the first distance (LA) is calculated as the distance between the detected positions of the wires at both ends in the width direction of the sheet-like member. Is detected from the position at a predetermined distance in the longitudinal direction of the wire, and the positions of the wires at both ends in the width direction of the sheet-like member are detected based on the position of the cutter when the detected magnetism changes. In addition, the second distance (LB) is calculated as the distance between the detection positions of the wires at both ends in the width direction of the sheet-like member, and the first distance (LA) and the second distance (LB) are a right triangle. Since the angle of the wire with respect to the cutting direction is calculated from the relationship as the two sides, for example, the cutting angle (θ) of the wire of the sheet-like member is calculated while cutting the sheet-like member from the relationship of Sinθ = LA / LB. can do.

  According to the present invention, the cutting angle (θ) of the wire of the sheet-like member can be calculated while cutting the sheet-like member from the relationship of Sinθ = LA / LB. When cutting the sheet-like member at a predetermined angle, the wire cutting angle in the sheet-like member including the ear rubber can be accurately calculated, and the wire cutting angle is accurately inspected to meet the required accuracy. can do.

  FIGS. 1 to 13 show a first embodiment of the present invention. FIG. 1 is a plan view showing a wire cutting angle calculation device according to the first embodiment of the present invention. FIG. 2 is an AA arrow in FIG. FIG. 3 is an enlarged sectional view taken along line BB in FIG. 1, FIG. 4 is an enlarged sectional view taken along line CC in FIG. 1, and FIG. 5 is a DD line in FIG. FIG. 6 is a block diagram showing an electric circuit of the wire cutting angle calculation device according to the first embodiment of the present invention, and FIGS. 7 to 10 are width calculation mechanism sections according to the first embodiment of the present invention. FIG. 11 to FIG. 13 are principal part enlarged views for explaining the principle of detecting the positions of the wires at both ends in the width direction of the sheet-like member in the first embodiment of the present invention, and FIG. 14 to FIG. FIG. 17 illustrates the operation of the width calculation mechanism in the first embodiment of the present invention. 18 to 25 are enlarged views of main parts for explaining the operation of the cutting mechanism part in the first embodiment of the present invention, and FIG. 26 is a width calculating mechanism part and a cutting machine in the first embodiment of the present invention. FIG. 27 is an enlarged view of a main part for explaining the arrangement of the rear part, FIG. 27 is an enlarged view of a main part for explaining the calculation of the displacement angle of the wire at both ends in the width direction of the sheet-like member in the first embodiment of the present invention, and FIG. FIG. 29 is a flowchart for explaining the operation of the width calculation processing shown in FIG. 28, and FIG. 30 is for explaining the operation of the cutting processing shown in FIG. FIG. 31 is a flowchart for explaining the operation of the angle calculation process shown in FIG.

  In the figure, reference numeral 1 denotes a wire cutting angle calculation device, which includes a width calculation mechanism unit 100, a cutting mechanism unit 200, and a control device 300 including a known computer.

  The width calculation mechanism unit 100 is supported by a pair of support plates 101 and 102 that are vertically provided at a predetermined interval and are rotatably supported by the support plates 101 and 102, and extends in parallel and horizontally at an interval L1. Two ball screws 103A and 103B and a guide shaft 104 are provided.

  At one end of each ball screw 103A, 103B, the same detection device 120A, 120B is mounted on each guide shaft 104 by a support part 121, and is movably mounted in the horizontal direction by the rotation of each ball screw 103A, 103B. ing.

  In addition, pulleys 105 and 106 are fixed to the ball screws 103A and 103B, respectively, and a belt 108 is stretched between the pulleys 105 and 106, and the rotation of the ball screws 103A and 103B is interlocked. You can move with. Further, another pulley 107 is provided on one ball screw 103A, and a belt 109 is stretched between the pulley 107 and a pulley 112 fixed to the rotating shaft 111 of the motor 114 of the driving unit 110. The ball screw 103A is rotated by the rotation.

  At the time of calculating the width, as shown in FIGS. 1 to 3, a sheet-like member 400 conveyed by a conveying device 500 such as a conveyor is disposed between the pair of support plates 101 and 102. Here, the sheet-like member 400 is arranged so that the axial direction of each of the ball screws 103A and 103B is orthogonal to the width direction of the sheet-like member 400.

  In the present embodiment, the width calculation mechanism unit 100 and the control device 300 before cutting the sheet-like member 400 formed by coating the rubber member 402 on the plurality of metal wires 401 arranged in parallel to each other in the width direction. Then, the positions e1 and e2 of the wire 401 at both ends in the width direction of the sheet-like member 400 are detected, and the distance between the detection positions e1 and e2 is calculated.

  Each of the detection devices 120A and 120B is provided with commercially available electromagnetic pickup sensors 130A and 130B and optical sensors 150A and 150B used for wheel tachometers and the like.

  Each of the electromagnetic pickup sensors 130A and 130B includes a magnetic body 131 that extends in the vertical direction on the surface of the sheet-like member 400, and a coil wound around the magnetic body 131 and a coil unit 132A and 132B that covers a part of the magnetic body 131. It is configured. In the present embodiment, magnetism is generated using a permanent magnet as the magnetic body 131. Further, the electromagnetic pickup sensors 130A and 130B are supported by an installation part 122 provided at the center of the movement direction of the bottom surface of each of the detection devices 120A and 120B, and as shown in FIGS. 2 and 3, from the coil units 132A and 132B. One end 131a of the protruding magnetic body 131 is arranged so as to have a minute gap G11, G21 between the surface of the sheet-like member 400, and each detection device 120A, 120B moves while maintaining this gap G11, G21 It is supposed to be.

  The optical sensors 150A and 150B built in the detection devices 120A and 120B are respectively composed of laser light emitters 151A and 151B and light receivers 152A and 152B. The laser light emitters 151A and 151B are the detection devices 120A and 120B. Laser light is emitted in the vertical direction on the surface of the sheet-like member 400 from the opening 123 formed on the bottom surface of the substrate, and the laser light reflected by a reflecting mirror (not shown) provided on the transport device 500 by the light receivers 152A and 152B is reflected. It is arranged to receive light.

  Further, the widths L11 and L21 in the moving direction of the detecting devices 120A and 120B of the laser light received by the light receivers 152A and 152B when not shielded are equal to or larger than the width in the moving direction of the detecting devices 120A and 120B of the electromagnetic pickup sensors 130A and 130B. And the centers of the widths L11 and L21 coincide with the centers of the movement directions of the detection devices 120A and 120B. The optical sensors 150A and 150B are not limited to the so-called integrated type including the laser beam emitters 151A and 151B and the light receivers 152A and 152B. For example, the optical sensors 150A and 150B are the light receivers 152A as in the separated type. , 152B, laser light emitters 151A, 151B may be disposed at positions facing the optical sensors 150A, 150B across the sheet-like member 400, and may be moved together with the detection devices 120A, 120B. A spot type may be used.

   At the time of starting the width calculation, each of the detection devices 120A and 120B uses the center in the movement direction of the detection devices 120A and 120B, that is, the positions of the electromagnetic pickup sensors 130A and 130B as reference positions, and these reference positions P1n and P2n are respectively The ball screws 103A and 103B are arranged so as to coincide with the start positions P1s and P2s at the left ends. These start positions P1s and P2s are set so that the received light amounts received by the light receivers 152A and 152B are the total light amounts when the light is not shielded. At the end of the width calculation, the detection devices 120A and 120B are moved so that the reference positions P1n and P2n coincide with the end positions P1e and P2e at the right ends of the ball screws 103A and 103B, respectively. These end positions P1e and P2e are set so that the received light amounts received by the light receivers 152A and 152B are the total light amounts when the light is not shielded.

  The cutting mechanism unit 200 includes a pair of support plates 201 and 202 that are vertically provided with a predetermined interval, a horizontally extending ball screw 203 that is rotatably supported by the support plates 201 and 202, and a guide shaft 204. .

  A cutting device 220 is mounted on one end of the ball screw 203 so as to be movable in the horizontal direction by the rotation of the ball screw 203 while being supported on the guide shaft 204 by the support portion 221.

  Further, a pulley 205 is fixed to the ball screw 203, and a belt 206 is stretched between the pulley 205 and a pulley 212 fixed to the rotating shaft 211 of the motor 214 of the driving unit 210 so that the cutting device 220 can move. It has become.

  Further, at the time of cutting, as shown in FIGS. 1 and 4, a sheet-like member 400 that has been conveyed by a conveying device 500 such as a conveyor is disposed between a pair of support plates 201 and 202. Here, the sheet-like member 400 and the conveying device 500 are arranged such that the longitudinal direction of the plurality of wires 401 included in the sheet-like member 400 and the axial direction of the ball screw 203 form a predetermined angle θ. The arrangement angle θ of the sheet-like member 400 and the conveying device 500 is set to the cutting angle of the sheet-like member 400. At this time, the distance from the position where the longitudinal direction of the wire 401 at one side end E1 of the sheet-like member 400 intersects with the ball screw 103B to the position where it intersects with the ball screw 203 is L2, and the wire at the other end E2 of the sheet-like member 400 The distance from the position where the longitudinal direction of 401 intersects with the ball screw 103B to the position where it intersects with the ball screw 203 is L3.

  Further, the sheet-like member 400 cut by the cutting device 220 is carried out by a carry-out device 510 such as a conveyor, and the sheet-like member 400 is successively and sequentially cut.

  In the present embodiment, the cutting mechanism unit 200 and the control device 300 detect the positions e1 and e2 of the wires 401 at both ends in the width direction of the sheet-like member 400 while cutting the sheet-like member 400, and detect between the detection positions e1 and e2. The distance is calculated.

  Further, the cutting device 220 is provided with a magnetic cutter 230, a motor 231 and a rotating shaft 232 which are rotating mechanisms thereof. As shown in FIGS. 4 and 5, one end portions of the motor 231 and the rotating shaft 232 are built in a protruding portion 222 that protrudes outward from the bottom surface of the cutting device 220, and the other end portion of the rotating shaft 232 extends from the protruding portion 222. Exposed outside. The disc-shaped cutter 230 supported around the other end rotates in the vertical plane of the ball screw 203, and is arranged so that the center thereof coincides with the center of the moving direction in the cutting device 220. Further, the diameter L31 of the cutter 230 is sufficiently larger than the distance between the wires 401, the diameter of the wire 401, the thickness of the sheet-like member 400, etc. so that the lower end (and the vicinity thereof) of the cutter 230 is in contact with the wire 401. Is set.

  The cutting device 220 is provided with a magnetoresistive detector 240 and an optical sensor 250 in addition to the cutter 230 and its rotating mechanism.

  The magnetoresistive detector 240 includes a magnetic body 241 extending in the longitudinal direction of the wire 401 and a coil unit 242 including a coil wound around the center of the magnetic body 242 and an amplifier. For example, a voltage of 40 kHz) is applied to generate magnetism. Further, the magnetoresistive detector 240 is supported by a support member 223 attached to one side surface of the cutting device 220 so as to be along the surface of the sheet-like member 400.

  Further, as shown in FIG. 5, the magnetoresistive detector 240 has a minute gap G31 between one end 241a of the magnetic body 241 and the cutter 230 of the cutting device 220, and is bent to the surface of the sheet-like member 400. The other end 241b of the magnetic body 241 is disposed so as to have a minute gap G32 between the other end 241b and the surface of the sheet-like member 400.

  The optical sensor 250 built in the cutting device 220 is composed of a laser light emitter 251 and a light receiver 252, and the laser light emitter 251 is formed from the opening 224 formed on the bottom surface of the cutting device 220 to form a sheet-like member 400. The laser beam is emitted in a direction perpendicular to the surface of the laser beam, and the light receiver 252 is arranged to receive the laser beam reflected by a reflection mirror (not shown) provided on the transport device 400.

  Furthermore, the width in the moving direction of the cutting device 220 of the laser light received by the light receiver 252 when not shielded is set to coincide with the diameter L31 of the cutter 230. The optical sensor 250 is not limited to a so-called integrated type including a laser beam emitter 251 and a light receiver 252. For example, the optical sensor 250 includes only the light receiver 252 as in a separate type, and the sheet-like member 400 is provided. A laser beam emitter 251 may be disposed at a position facing the optical sensor 250 across the substrate, and may be moved together with the cutting device 220, or may be a spot type.

   As shown in FIG. 4, at the start of cutting, the cutting device 220 uses the central portion in the moving direction of the cutting device 220, that is, the position of the rotating shaft 231 of the cutter 230 as a reference position, and this reference position P3n is the position of the ball screw 203. Arranged to coincide with the start position P3s at the left end. This start position P3s is set so that the amount of light received by the light receiver 252 is the total amount of light when no light is blocked. At the end of detection, the cutting device 220 is moved so that the reference position P3n coincides with the end position P3e at the right end of the ball screw 203. The end position P3e is set so that the amount of light received by the light receiver 252 is the total amount of light when no light is blocked.

  The electric circuit of the wire cutting angle calculation device 1 in this embodiment is as shown in FIG. That is, the electrical circuit of the wire cutting angle calculation device 1 includes a control device 300, optical sensors 150A, 150B, 250, driving units 110, 210, a motor 232, rectifying / smoothing circuits 140A, 140B, and a coil unit 242. It is configured by connecting the alarm device 10.

  The light receivers 152A and 152B of the optical sensors 150A and 150B receive the laser light emitted from the laser light emitters 151A and 151B, respectively, and the light quantity value of the received laser light is converted into digital data as the center of the control device 300. Each is output to the control unit 301.

  The light receiver 252 of the optical sensor 250 receives the laser light emitted from the laser light emitter 251 and outputs the value of the light amount of the received laser light to the central control unit 301 of the control device 300 as digital data.

  The drive unit 110 includes a pulse generator 113 and a motor 114, and the motor 114 is rotated by drive control from the control device 300. Further, a pulse signal is output from the pulse generator 113 to the control device 300 in synchronization with the rotation of the motor 114. Thereby, in the control device 300, the number of rotations of the motor 114 can be obtained by counting the number of pulses in the pulse signal output from the pulse generator 113, whereby the number of rotations of the ball screw 103, and further the detection devices 120A and 120B. The positions P1n and P2n can be detected.

  The drive unit 210 includes a pulse generator 213 and a motor 214, and the motor 214 is rotated by drive control from the control device 300. Further, a pulse signal is output from the pulse generator 213 to the control device 300 in synchronization with the rotation of the motor 214. As a result, the control device 300 can obtain the rotational speed of the motor 214 by counting the number of pulses in the pulse signal output from the pulse generator 213, thereby obtaining the rotational speed of the ball screw 203 and further the position P3n of the cutting device 220. Can be detected.

  The motor 232 is rotated by drive control from the control device 300 and rotates the cutter 230 about the rotation shaft 231.

  Each coil unit 132A, 132B outputs a voltage signal corresponding to the magnetic flux density generated between the terminals of the coil to the rectifying / smoothing circuits 140A, 140B, and each rectifying / smoothing circuit 140A, 140B receives these voltage signals. Is subjected to full wave rectification and then smoothed and output to the central control unit 301.

  The coil unit 242 outputs a voltage corresponding to the magnetic flux density generated between the coil terminals by the coil to which the high frequency voltage is applied, to the central control unit 301 of the control device 300.

  The alarm device 10 is driven by alarm control from the control device 300, and outputs alarms such as sound and light.

  The control device 300 includes a central control unit 301, a storage unit 302, an alarm control unit 303, and motor controllers 304, 305, and 306.

  At the time of the width calculation, the central control unit 301 outputs a control instruction for the motor 114 to the motor controller 304 based on the operation program stored in the storage unit 302, and outputs the pulse signal output from the pulse generator 113. The reference positions P1n and P2n of the detectors 120A and 120B are detected by counting the number of pulses, and the positional information and voltage signals output from the coil units 132A and 132B via the rectifying / smoothing circuits 140A and 140B are detected. Based on each of the detection devices 120A, 120B, respectively, detect the positions e1, e2 of the wire 401 at both ends in the width direction of the sheet-like member 300, calculate the distance between the positions e1, e2, respectively, When compared with a value within a predetermined standard range stored in advance in the storage unit 302, the detection devices 120A and 120B are stopped and an alarm is output from the alarm device 10 via the alarm control unit 303.

  Further, the central control unit 301 is configured so that the detection devices 120A and 120B can detect both sides of the sheet-like member 400 based on the positional information of the detection devices 120A and 120B and the received light amount of the laser light output from the light receivers 152A and 152B. Edge positions E1 and E2 are detected, and the distances between the positions E1 and E2 are calculated, and the calculated results are compared with values in a predetermined standard range stored in the storage unit 302 in advance. When it is, the detection devices 120A and 120B are stopped, and an alarm is output from the alarm device 10 via the alarm control unit 303.

  Further, the central control unit 301 detects the position information of the positions e1 and e2 of the wire 401 at both ends in the width direction of the sheet-like member 400 detected by the detection devices 120A and 120B and the positions E1 and E2 of the both-side ends of the sheet-like member 400. The amount of rubber formed on both side ends of the sheet-like member 400 (hereinafter referred to as the amount of ear rubber (length)) is calculated from the positional information, and the calculation results are stored in the storage unit 302 in advance. When the value is out of the standard range as compared with the value in the standard range, the detection devices 120A and 120B are stopped and an alarm is output from the alarm device 10 via the alarm control unit 303.

  Further, at the time of cutting, the central control unit 301 outputs control instructions for the motors 214 and 232 to the motor controllers 305 and 306, and counts the number of pulses of the pulse signal output from the pulse generator 213 to reference position of the cutting device 220. P3n is detected, and based on the position information and the change in voltage output from the coil unit 242, the positions e1 and e2 of the wire 401 at both ends in the width direction of the sheet-like member 400 are detected, and the positions e1 and e2 When the calculated result is out of the standard range compared with the value of the predetermined standard range stored in the storage unit 302 in advance, the cutting device 220 is stopped and the alarm control unit 303 is An alarm is output from the alarm device 10.

  Further, the central control unit 301 detects the positions E1 and E2 of both side ends of the sheet-like member 400 based on the positional information of the cutting device 220 and the received light amount of the laser light output from the light receiver 252 and The distance between the positions E1, E2 is calculated, and when the calculated result is out of the standard range by comparing with the value of the predetermined standard range stored in advance in the storage unit 302, the cutting device 220 is stopped and the alarm control unit An alarm is output from the alarm device 10 via 303.

  Further, the central control unit 301 determines the sheet-like member from the detected position information of the positions e1 and e2 of the wire 401 at both ends in the width direction of the sheet-like member 400 and the position information of the positions E1 and E2 on both side ends of the sheet-like member 400. When the amount (length) of the ear rubber formed at both end portions of 400 is calculated, and the calculated result is compared with the value of the predetermined standard range stored in the storage unit 302 in advance, and is out of the standard range Then, the cutting device 220 is stopped, and an alarm is output from the alarm device 10 via the alarm control unit 303.

  The operation program of the storage unit 302 includes the movement distance of the detection devices 120A and 120B between the pulses of the pulse signal output from the pulse generator 113 and the cutting device 220 between the pulses of the pulse signal output from the pulse generator 213. Since the moving distance is set in advance, the distance can be calculated by multiplying this distance by the number of pulses.

  Next, details of the operation of the wire cutting angle calculation device 1 in the present embodiment will be described with reference to the operation explanatory diagrams shown in FIGS. 7 to 27 and the flowcharts shown in FIGS. 28 to 31.

  When the wire cutting angle calculation device 1 is driven, laser light is emitted from the laser light emitters 151A, 151B, 251 of the optical sensors 150A, 150B, 250, and the magnetoresistive detector 240 generates magnetism and is controlled. Initial setting is performed by the central control unit 301 of the apparatus 300 (S1).

  In this initial setting, as shown in FIGS. 7 and 8, the central control unit 301 drives the motor 114 via the motor controller 304, and moves the detection devices 120A and 120B to the left end portions of the ball screws 103A and 103B. The reference positions P1n and P2n are moved so as to coincide with the start positions P1s and P2s of the ball screws 103A and 103B. Further, the central control unit 301 stores the received light amount of the laser light from the optical receivers 152A and 152B output from the optical sensors 150A and 150B in the storage unit 302 as a total received light amount.

  As shown in FIG. 18, the central control unit 301 drives the motor 214 via the motor controller 305 to move the cutting device 220 to the left end of the ball screw 203, so that the reference position P3n is the start position P3s of the ball screw 203. Move to match. Further, the central control unit 301 stores the amount of laser light received by the light receiver 252 output from the optical sensor 250 in the storage unit 302 as the total amount of received light.

  Next, the central control unit 301 performs the width calculation processing S100 in each of the detection devices 120A and 120B shown in FIG. 29 in parallel. In the description here, unless otherwise specified, the description of the operation of the control device 300 and the detection device 120B is omitted from the description of the operation of the control device 300 and the detection device 120A.

  That is, the central control unit 301 drives the motor 114 via the motor controller 304, and moves the detection device 120A (120B) toward the right end of the ball screw 103A (103B) (S101).

  Next, the central control unit 301 determines whether or not the received light amount output from the optical sensor 150A (150B) is a predetermined ratio of the total received light amount stored at the time of initial setting (S102). This ratio is desirably set as appropriate based on the length of the width in the moving direction of the detection device 120A (120B) in the laser light received by the light receiver 152A (152B), the length in the direction orthogonal thereto, and the like. In the present embodiment, when the received light amount of the light receiver 152A (152B) is equal to or less than ½ of the total received light amount stored at the time of initial setting, it is determined to be a predetermined ratio.

  As a result of this determination, when the received light amount of the light receiver 152A (152B) is larger than ½ of the total received light amount stored at the time of initial setting, the processing of S102 is repeated until it becomes ½ or less.

  When the amount of light received by the light receiver 152A (152B) is ½, the position of the detection device 120A (120B) is as shown in FIG. 9 (FIG. 10). That is, ½ of the laser beam with the width L11 (L21) received by the light receiver 152A (152B) when not shielded is shielded by the left end of the sheet-like member 400, and the light receiver 152A (152B) has a width L11 (L21 ) (L12 = L11 / 2 (L22 = L21 / 2)) and the reference position P1n (P2n) of the detection device 120A (120B) coincides with the left end position of the sheet-like member 400. At this time, the central control unit 301 counts the number of pulses of the pulse signal output from the pulse generator 113 to detect the reference position P1n (P2n) of the detection device 120A (120B) (S103), and the detected detection device 120A The reference position P1n (P2n) of (120B) is stored in the storage unit 302 as the left end position P11 (P21) of the sheet-like member 400 (S104).

  Thereafter, the central control unit 301 determines the position of the wire 401 at the left end in the width direction of the sheet-like member 400 based on the voltage signal output from the coil unit 132A (132B) via the rectifying / smoothing circuit 140A (140B). It is determined whether or not it has been detected (S105).

  Here, the principle of detecting the positions of the wires 401 at both ends in the width direction of the sheet-like member 400 will be described using the detection device 120A.

  As shown in FIG. 11, when there is no wire 401 under the electromagnetic pickup sensor 130A that moves together with the detection device 120A, the magnetism generated from the magnetic body 131 does not change, so that a voltage is generated in the coil in the coil unit 132A. Not.

  Further, as shown in FIG. 12, when the electromagnetic pickup sensor 130A that moves together with the detecting device 120A moves and the wire 401 is under the electromagnetic pickup sensor 130A, that is, only a minute gap G12 from one end 131a of the magnetic body 131. When the wire 401 is located at a distant position, the magnetic flux density is changed by the wire 401, which is a magnetic material, and a voltage (electromotive force) is generated in the coil in the coil unit 132A. When the electromagnetic pickup 130A is moved from this state and there is no wire 401 under the electromagnetic pickup sensor 130A again, a reverse voltage (electromotive force) is generated in the coil in the coil unit 132A. When the wire diameter = 1 to 1.2 mm and the thickness of the rubber member 402 from the wire 401 to the surface = 0.5 mm, the gap G12 is preferably set to about 0.5 to 1.0 mm.

  As a result, a voltage signal as shown in FIG. 13A is output from the coil unit 132A of the electromagnetic pickup sensor 130A that moves together with the detection device 120A. That is, when the electromagnetic pickup sensor 130A is moving between the wires 401 at both ends in the width direction of the sheet-like member 400, a predetermined AC voltage is generated in the coil in the coil 132A. The AC voltage is determined by a function having the gap G12 and the moving speed of the electromagnetic pickup sensor 130A as independent variables.

  When the voltage signal output from the coil unit 132A is full-wave rectified by the rectifying / smoothing circuit 140A, a voltage signal as shown in FIG. 13 (b) is obtained, and when this is smoothed, the voltage signal as shown in FIG. 13 (c) is obtained. A voltage signal is obtained. That is, when the electromagnetic pickup sensor 130A is moving between the wires 401 at both ends in the width direction of the sheet-like member 400, a predetermined DC voltage (hereinafter referred to as a threshold voltage (Vs)) is generated from the rectifying / smoothing circuit 140A. Is output. In the present embodiment, the DC voltage is obtained from the AC voltage using the rectifying / smoothing circuit 140A. However, the present invention is not limited to this, and other types and other electric circuits may be used.

  Therefore, the central control unit 301 changes the voltage signal output from the rectifying / smoothing circuit 140A to the reference voltage Vo when the voltage signal becomes the threshold voltage Vs and is no longer the threshold voltage Vs (becomes zero). The position P12 of the wire 401 at the left end in the width direction of the sheet-like member 400 and the position P13 of the wire 401 at the right end in the width direction by the detection device 120A can be detected from the reference position P1n of the detection device 120A at that time. Similarly, the position P22 of the wire 401 at the left end in the width direction of the sheet-like member 400 and the position P23 of the wire 401 at the right end in the width direction can be detected by the detection device 120B.

  As a result of this determination, when the position of the wire 401 at the left end in the width direction of the sheet-like member 400 is not detected, the process of S105 is repeated until it is detected.

  When the central control unit 301 detects the position of the wire 401 at the left end in the width direction of the sheet-like member 400, that is, the voltage signal output from the rectifying / smoothing circuit 140A (140B) is stored in the storage unit 302 in advance. When the voltage Vs is reached, the central control unit 301 detects the reference position P1n (P2n) of the detection device 120 by counting the number of pulses of the pulse signal output from the pulse generator 113 (S106), and the detected detection device The reference position P1n (P2n) of 120A (120B) is stored in the storage unit 302 as the position P12 (P22) of the wire 401 at the left end in the width direction of the sheet-like member 400 (S107).

  Next, the central control unit 301 calculates an ear rubber amount (length) Q11 (Q21) formed at the left end portion of the sheet-like member 400 by the following equation (1) (S108).

Q11 (Q21) = P12 (P22)-P11 (P21) (1)
Further, the central control unit 301 compares this with the upper limit and lower limit of the standard value of the ear rubber amount stored in advance in the storage unit 302, and determines whether or not the calculated ear rubber amount Q11 (Q21) is within the standard range. Is determined (S109).

  As a result of the determination, when the ear rubber amount Q11 (Q21) is not within the standard range, that is, out of the standard range, the central control unit 301 stops driving the motor 114 via the motor controller 304, and the detection device 120A (120B ) Is stopped (S110), the alarm device 10 is driven via the alarm control unit 303 to output an alarm (S111), and the width calculation process S100 is terminated. Thereby, when the amount of ear rubber Q11 (Q21) out of the standard range is calculated, the detection device 120A (120B) can be immediately stopped to notify the abnormality.

  When the ear rubber amount Q11 (Q21) is within the standard range, the central control unit 301 forms a sheet based on the voltage signal output from the coil unit 132A (132B) via the rectification / smoothing circuit 140A (140B). It is determined whether or not the position of the wire 401 at the right end in the width direction of the member 400 has been detected (S1112).

  As a result of this determination, when the position of the wire 401 at the right end in the width direction of the sheet-like member 400 is not detected, the process of S112 is repeated until it is detected.

  When the position of the wire 401 at the right end in the width direction of the sheet-like member 400 is detected, that is, the voltage signal output from the rectifying / smoothing circuit 140A (140B) is no longer the threshold voltage Vs stored in the storage unit 302 in advance. When it becomes zero, the central control unit 301 detects the reference position P1n (P2n) of the detection device 120A (120B) by counting the number of pulses of the pulse signal output from the pulse generator 113 (S113), The detected reference position P1n (P2n) of the detection device 120A (120B) is stored in the storage unit 302 as the position P13 (P23) of the wire 401 at the right end in the width direction of the sheet-like member 400 (S114).

  Next, the central control unit 301 calculates a distance L1A (L2A) between the wires 401 at both ends in the width direction of the sheet-like member 400 by the following equation (2) (S115).

L1A (L2A) = P13 (P23)-P12 (P22) (2)
Further, the central control unit 301 compares the upper limit and the lower limit of the standard value of the distance between the wires 401 at both ends in the width direction of the sheet-like member 400 stored in advance in the storage unit 302, and calculates the calculated distance L1A (L2A). Is determined to be within the standard range (S116).

  As a result of this determination, when the distance L1A (L2A) between the wires 401 at both ends in the width direction of the sheet-like member 400 is not within the standard range, that is, out of the standard range, the central control unit 301 performs the motor 114 via the motor controller 304. Is stopped, the movement of the detector 120A (120B) is stopped (S110), the alarm device 10 is driven via the alarm controller 303 to output an alarm (S111), and the width calculation process S100 is terminated. To do. Thereby, when the distance L1A (L2A) outside the standard range is calculated, the detection device 120A (120B) can be immediately stopped to notify the abnormality.

  When the distance L1A (L2A) between the wires 401 at both ends in the width direction of the sheet-like member 400 is within the standard range, the central control unit 301 sets the distance L1A (L2A) between the wires 401 at both ends in the width direction of the sheet-like member 400. It memorize | stores in the memory | storage part 302 (S117).

  Next, the central control unit 301 determines whether or not the received light amount output from the optical sensor 150A (150B) is a predetermined ratio of the total received light amount stored at the time of initial setting (S118). In the present embodiment, when the received light amount of the light receiver 152A (152B) is ½ or more of the total received light amount stored at the time of initial setting, it is determined that the predetermined ratio is obtained.

  As a result of this determination, when the received light amount of the light receiver 152A (152B) is less than ½ of the total received light amount stored at the time of initial setting, the process of S118 is repeated until it becomes ½ or more.

  When the amount of light received by the light receiver 152A (152B) is ½, the position of the detection device 120A (120B) is as shown in FIG. 14 (FIG. 15). That is, half of the laser beam having the width L11 (L21) received by the light receiver 152A (152B) when not shielded is shielded by the right end of the sheet-like member 400, and the light receiver 152A (152B) has a width L13 (L23). (L13 = L11 / 2 (L23 = L21 / 2)) and the reference position P1n (P2n) of the detection device 120A (120B) coincides with the right end position of the sheet-like member 400. At this time, the central control unit 301 counts the number of pulses of the pulse signal output from the pulse generator 113 to detect the reference position P1n (P2n) of the detection device 120A (120B) (S119), and the detected detection device 120A The reference position P1n (P2n) of (120B) is stored in the storage unit 302 as the right end position P14 (P24) of the sheet-like member 400 (S119).

  Thereafter, the central control unit 301 calculates the amount of ear rubber (length) Q12 (Q22) formed on the right end of the sheet-like member 400 and both sides of the sheet-like member 400 by the following equations (3) and (4). The distance L14 (L24) between the ends is calculated (S121, S122).

Q12 (Q22) = P14 (P24)-P13 (P23) (3)
L14 (L24) = P14 (P24)-P11 (P21) (4)
Further, the central control unit 301 determines whether or not the calculated ear rubber amount Q12 (Q22) is within the standard range by comparing with the upper and lower limits of the standard value of the ear rubber amount previously stored in the storage unit 302. (S123).

  As a result of this determination, when the ear rubber amount Q12 (Q22) is not within the standard range, that is, outside the standard range, the central control unit 301 stops driving the motor 114 via the motor controller 304, and the detection device 120A (120B ) Is stopped (S110), the alarm device 10 is driven via the alarm control unit 303 to output an alarm (S111), and the width calculation process S100 is terminated. As a result, when the ear rubber amount Q12 (Q22) outside the standard range is calculated, the detection device 120A (120B) can be immediately stopped to notify the abnormality.

  When the ear rubber amount Q12 (Q22) is within the standard range, the central control unit 301 compares the upper limit and the lower limit of the standard value of the distance between both side ends of the sheet-like member 400 stored in the storage unit 302 in advance. It is determined whether or not the calculated distance L14 (L24) is within the standard range (S124).

  As a result of this determination, when the distance L14 (L24) between the both side ends of the sheet-like member 400 is not within the standard range, that is, outside the standard range, the central control unit 301 stops driving the motor 114 via the motor controller 304. Then, the movement of the detection device 120A (120B) is stopped (S110), the alarm device 10 is driven via the alarm control unit 303 to output an alarm (S111), and the width calculation process S100 is terminated. Thereby, when the distance L14 (L24) outside the standard range is calculated, the detection device 120A (120B) can be immediately stopped to notify the abnormality.

  When the distance L14 (L24) between both side ends of the sheet-like member 400 is within the standard range, as shown in FIG. 16 (FIG. 17), the central control unit 301 has the reference position P1n (P2n) set to the ball screw 103A (103B). ) Is moved to coincide with the end position P1e (P2e) of), the drive of the motor 114 is stopped via the motor controller 304, and the movement of the detector 120A (120B) is stopped (S125). Then, the width calculation process S100 ends.

  After the width calculation processes S100 executed in parallel are completed, the sheet-like member 400 is conveyed by a predetermined distance (hereinafter referred to as a conveyance distance L4) in the longitudinal direction of the wire 401 by the conveyance device 500 (S2). The conveyance distance L4 is determined by specifications such as the cutting angle and width of the sheet-like member 400 to be cut.

  Next, the central control unit 301 performs a cutting process S200 shown in FIG.

  That is, the central control unit 301 drives the motor 214 via the motor controller 305 to move the cutting device 220 toward the right end of the ball screw 203 (S201).

  Thereafter, the central control unit 301 determines whether or not the amount of received light output from the optical sensor 250 is a predetermined ratio of the total amount of received light stored at the time of initial setting (S202). This ratio is appropriately determined based on the arrangement angle θ of the sheet-like member 400 and the conveying device 500, the length of the width in the moving direction of the cutting device 220 in the laser light received by the light receiver 252 and the length in the direction orthogonal thereto. It is desirable to set. In the present embodiment, it is determined that the ratio is a predetermined ratio when the amount of light received by the light receiver 252 is the total amount of received light stored at the time of initial setting.

  As a result of this determination, when the amount of light received by the light receiver 252 is a predetermined ratio of the total amount of received light stored at the time of initial setting, the process of S202 is repeated until it becomes less than the predetermined ratio.

  When the ratio is not the predetermined ratio, the position of the cutting device 220 is as shown in FIG. That is, the laser light emitted from the laser emitter 251 is shielded by the left end of the sheet-like member 400, the light receiver 252 cannot receive the laser light having the width L31, and the received light amount is the total received light amount stored in the initial setting S1. Less than. At this time, the central control unit 301 detects the reference position P3n of the cutting device 220 by counting the number of pulses of the pulse signal output from the pulse generator 213 (S203), and the detected reference position P3n of the cutting device 220 is the sheet. The left end position P31 of the member 400 is stored in the storage unit 302 (S204).

  Next, the central control unit 301 determines whether or not the position of the wire 401 at the left end in the width direction of the sheet-like member 400 has been detected based on the change in the voltage output from the coil unit 242 (S205). The cutting device 220 and the sheet-like member 400 before and after the change in voltage have a relationship as shown in FIGS.

  After detecting the left end of the sheet-like member 400, until the position of the wire 401 at the left end in the width direction of the sheet-like member 400 is detected, the cutter 230 does not come into contact with the wire 401 as shown in FIG. Cut 402.

  At this time, the gap G31, the magnetic body 241, and the space S from the cutter 230 to the other end 241b of the magnetic body 241 are regarded as secondary coils, and the respective magnetic resistances are R1, R2, and R3. The total magnetic resistance RA of the secondary coil before contact is expressed by the following equation (5).

RA = R1 + R2 + R3 (5)
Among these, the magnetic resistance R3 in the space S is sufficiently larger than the magnetic resistance R1 of the gap G31 and the magnetic resistance R2 of the magnetic body 241 (R3 >> R1, R2). The total magnetoresistance RA can be regarded as almost the magnetoresistance R3 (RA≈R3).

  When the cutter 220 moves and the cutter 230 comes into contact with the wire 401 as shown in FIG. 21, the gap G31, the magnetic body 241, the cutter 230 and the wire 401, the other end 241b of the magnetic body 241 to the wire 401 If the gap G33 is taken as a secondary coil and the respective magnetic resistances are R1, R2, R4, and R5, the total magnetic resistance RB of the secondary coil after the cutter 230 contacts the wire 401 is as follows: Represented by an expression.

RB = R1 + R2 + R4 + R5 (6)
Among them, the gap G33 is a very small space, and both the cutter 230 and the wire 401 are magnetic bodies. Therefore, the magnetic resistance R4 of the gap G33 and the magnetic resistance R5 of the cutter 230 and the wire 401 are the same as the magnetic resistance R3 of the space S. Small enough compared to R3 >> R4, R5. As a result, the total magnetic resistance RB after contact is sufficiently smaller than the total magnetic resistance RA before contact, so that the voltage output from the coil unit 242 after contact is much lower than the voltage before contact, The control unit 301 can detect the position of the wire 401 at the left end in the width direction of the sheet-like member 400 from this voltage change.

  As a result of this determination, when the position of the wire 401 at the left end in the width direction of the sheet-like member 400 is not detected, the process of S205 is repeated until it is detected.

  When the position of the wire 401 at the left end in the width direction of the sheet-like member 400 is detected, the position of the cutting device 220 is as shown in FIG. At this time, the central control unit 301 detects the reference position P3n of the cutting device 220 by counting the number of pulses of the pulse signal output from the pulse generator 213 (S206), and the detected reference position P3n of the cutting device 220 is a sheet. The position is stored in the storage unit 302 as the position P32 of the wire 401 at the left end in the width direction of the shaped member 400 (S207).

  Next, the central control unit 301 calculates an ear rubber amount Q31 formed at the left end portion of the sheet-like member 400 by the following equation (7) (S208).

Q31 = P32−P31 (7)
Further, the central control unit 301 compares this with the upper and lower limits of the standard value of the ear rubber amount stored in the storage unit 302, and determines whether or not the calculated ear rubber amount Q31 is within the standard range ( S209).

  As a result of this determination, when the ear rubber amount Q31 is not within the standard range, that is, outside the standard range, the central control unit 301 stops driving the motor 214 via the motor controller 305 and stops the movement of the cutting device 220. At the same time (S210), the alarm device 10 is driven via the alarm control unit 303 to output an alarm (S211), and the cutting process S200 is terminated. Thus, when the ear rubber amount Q31 outside the standard range is calculated while cutting the sheet-like member 400, the cutting device 220 can be immediately stopped to notify the abnormality.

  When the ear rubber amount Q31 is within the standard range, the central control unit 301 detects whether or not the position of the wire 401 at the right end in the width direction of the sheet-like member 400 is detected based on the change in the voltage output from the coil unit 242. Is determined (S212). The cutting device 220 and the steel coating material 400 before and after the voltage change have the above-described relationship shown in FIGS.

  That is, after detecting the position of the wire 401 at the left end in the width direction of the sheet-like member 400, until the position of the wire 401 at the right end in the width direction is detected, the cutter 230 is in contact with the wire 401 as shown in FIG. ing. That is, since the diameter L31 of the cutter 230 is set to a value sufficiently larger than the interval between the steel wire members 401, only the rubber member 402 after the cutter 230 contacts the wire 401 at the left end in the width direction of the sheet-like member 400. It is always in contact with one or more wires 401 without contact. The total magnetic resistance RB of the secondary coil at this time is expressed by the above equation (7).

  Further, when the cutting device 220 moves and the cutter 230 does not come into contact with the wire 401 as shown in FIG. 20, the total magnetic resistance RA of the secondary coil is expressed by the above equation (6). As a result, the total magnetoresistance RA that is no longer in contact is sufficiently larger than the total magnetoresistance RB that is in contact, so that a reverse electromotive force is generated in the coil, and the voltage output from the coil unit 242 after the contact is lost Becomes much lower than the voltage during contact, and the central control unit 301 can detect the position of the wire 401 at the right end in the width direction of the sheet-like member 400 from the change in the voltage.

  In the present embodiment, the cutting device 220 is provided with the magnetoresistive detector 240 to detect the positions of the wires 401 at both ends in the width direction of the sheet-like member 400, but the electromagnetic pickup sensors 130A and 130B and the rectifying / smoothing circuit described above are used. The positions of the wires 401 at both ends in the width direction of the sheet-like member 400 may be detected using 140A and 140B.

  As a result of this determination, when the position of the wire 401 at the right end in the width direction of the sheet-like member 400 is not detected, the process of S212 is repeated until it is detected.

  When the position of the wire 401 at the right end in the width direction of the sheet-like member 400 is detected, the position of the cutting device 220 is as shown in FIG. At this time, the central control unit 301 counts the number of pulses of the pulse signal output from the pulse generator 213 to detect the reference position P3n of the cutting device 220 (S213), and the detected reference position P3n of the cutting device 220 is a sheet. The position is stored in the storage unit 302 as the position P33 of the wire 401 at the right end in the width direction of the shaped member 400 (S214).

  Next, the central control unit 301 calculates the distance LB between the wires 401 at both ends in the width direction of the sheet-like member 400 by the following equation (8) (S215).

LB = P33 − P32 (8)
Further, the central control unit 301 compares the upper limit and the lower limit of the standard value in the distance between the wires 401 at both ends in the width direction of the sheet-like member 400 stored in the storage unit 302, and the calculated distance LB is within the standard range. It is determined whether or not (S216).

  As a result of this determination, when the distance LB between the wires 401 at both ends in the width direction of the sheet-like member 400 is not within the standard range, that is, outside the standard range, the central control unit 301 drives the motor 214 via the motor controller 305. Stop and stop the movement of the cutting device 220 (S210), drive the alarm device 10 via the alarm control unit 303, output an alarm (S211), and terminate the cutting process S200. As a result, when the distance LB outside the standard range is calculated while cutting the sheet-like member 400, the cutting device 220 can be immediately stopped to notify the abnormality.

  When the distance LB between the wires 401 at both ends in the width direction of the sheet-like member 400 is within the standard range, the central control unit 301 stores the distance LB between the wires 401 at both ends in the width direction of the sheet-like member 400 in the storage unit 302. (S217).

  Next, the central control unit 301 determines whether or not the received light amount output from the optical sensor 250 is a predetermined ratio of the total received light amount stored at the time of initial setting (S218). In this embodiment, as described above, the total amount of received light stored when the amount of light received by the light receiver 252 is initially set is set to a predetermined ratio.

  As a result of this determination, when the amount of light received by the light receiver 252 is not a predetermined ratio of the total amount of received light stored at the time of initial setting, the process of S218 is repeated until the predetermined amount is reached.

  When the ratio is a predetermined ratio, the position of the cutting device 220 is as shown in FIG. That is, the laser light that has been shielded by the right end of the sheet-like member 400 is no longer shielded, the light receiver 252 receives the laser light having the width L31, and the amount of light received by the light receiver 252 is the total stored in the process of the initial setting S1. This is the amount of light received. At this time, the central control unit 301 detects the reference position P3n of the cutting device 220 by counting the number of pulses of the pulse signal output from the pulse generator 213 (S219), and the detected reference position P3n of the cutting device 220 is a sheet. Stored in the storage unit 302 as the right end position P34 of the shaped member 400 (S220).

  Thereafter, the central control unit 301 determines the amount (length) of ear rubber Q32 formed at the right end of the sheet-like member 400 and the both ends of the sheet-like member 400 by the following equations (9) and (10). The distance L32 is calculated (S220, S221).

Q32 ＝ P34 − P33… (9)
L32 = (P34-P31)-L31 (10)
The left end position P31 of the sheet-like member 400 is the reference position P3n when the reference position P3n of the cutting device 220 is located to the left by L31 / 2 from the left end position of the actual sheet-like member 400. The right end position P34 of the sheet-like member 400 is the reference position P3n when the reference position P3n of the cutting device 220 is located to the right by L31 / 2 from the right end position of the actual sheet-like member 400. Thus, the distance between the detection position (P31, P34) and the reference position P3n is adjusted by subtracting the diameter L31 of the cutter 230 from the both end positions P31, P34.

  Further, the central control unit 301 determines whether or not the calculated ear rubber amount Q32 is within the standard range by comparing with the upper limit and lower limit of the standard value of the ear rubber amount stored in the storage unit 302 (S223). .

  As a result of the determination, when the ear rubber amount Q32 is not within the standard range, that is, outside the standard range, the central control unit 301 stops driving the motor 214 via the motor controller 305 and stops the movement of the cutting device 220. At the same time (S210), the alarm device 10 is driven via the alarm control unit 303 to output an alarm (S211), and the cutting process S200 is terminated. As a result, when the ear rubber amount Q32 outside the standard range is calculated while cutting the sheet-like member 400, the cutting device 220 can be immediately stopped to notify the abnormality.

  When the ear rubber amount Q32 is within the standard range, the central control unit 301 calculates the distance L32 calculated by comparing the upper limit and the lower limit of the standard value of the distance between both side ends of the sheet-like member 400 stored in the storage unit 302. Is determined to be within the standard range (S224).

  As a result of this determination, when the distance L32 between both side ends of the sheet-like member 400 is not within the standard range, that is, outside the standard range, the central control unit 301 stops driving the motor 214 via the motor controller 305 and disconnects it. The movement of the device 220 is stopped (S210), the alarm device 10 is driven via the alarm control unit 303 to output an alarm (S211), and the cutting process S200 is terminated. Thereby, when the distance L32 outside the standard range is calculated while cutting the sheet-like member 400, the cutting device 220 can be immediately stopped to notify the abnormality.

  When the distance L32 between both side ends of the sheet-like member 400 is within the standard range, the central control unit 301 moves the cutting device 220 until the reference position P3n coincides with the end position P3e of the ball screw 203 as shown in FIG. The driving of the motor 214 is stopped via the motor controller 305, the movement of the cutting device 220 is stopped (S225), and the cutting out process S200 is ended.

  Next, the central control unit 301 performs an angle calculation process S300 shown in FIG.

  When performing the angle calculation process S300, it is necessary that the width calculation process S100 in each of the detection devices 120A and 120B is performed a predetermined number of times, and the distances L1A and L2A calculated at the time of cutting a predetermined number of times are stored in the storage unit 302. is there.

  That is, one side end of the sheet-like member 400 for which the distances L1A and L2A have been calculated by the width calculation process S100 is cut by the cutting device 220 after being conveyed L2 / L4 times by the conveying device 500, and the other side end is conveyed by the conveying device. After being conveyed L3 / L4 times by 500, it is cut by the cutting device 220. Accordingly, when the arrangement angle θ is 0 degree <θ ≦ 90 degrees, that is, L2 ≦ L3, at least L3 / L4 times, and when 90 degrees <θ <180 degrees, that is, L2> L3, at least L2 / L4 distances L1A, L2A is stored in the storage unit 202.

  In the following description, as shown in FIG. 26, the distance L1 is set to L1 = L4, the distances L2 and L3 are set to L2 = 3 × L4, L3 = 5 × L4, and the distance L2 is the width direction of the sheet-like member 400. The distance L3 approximates the distance from the position where the wire 401 at one end intersects the ball screw 103B to the position where it intersects the ball screw 203, and the distance L3 is from the position where the wire 401 at the other end in the width direction of the sheet-like member 400 intersects the ball screw 103B. Approximate the distance to the position where it intersects. In order to improve the calculation accuracy, the interval L1 is desirably equal to or less than the transport distance L4. Accordingly, one or more distances L1A and L2A are always calculated for the sheet-like member 400 to be cut.

  The central control unit 301 performs the distances L1A and L2A three times before and five times before the storage unit 202 (hereinafter, the distances L1A and L2A before N times are referred to as L1A # N and L2A # N) and one time before (just before ) Is read (S301), and the average cutting angle θH of the wire 401 is calculated by the following equation (11) (S302).

SinθH = LHA / LB (11)
(However, LHA # 5 = L2A # 5 + (L2A # 5-L2A # 3) / 2)
In the present embodiment, the angle is calculated using Sinθ. However, the present invention is not limited to this, and the angle may be calculated using another trigonometric function, Pythagorean theorem, or a combination of these. Good.

  Thereafter, the central control unit 301 reads the distances L1A and L2A four times before from the storage unit 202 (S303), and at the one end in the width direction of the sheet-like member 400 by the following equations (12), (13), and (14). The cutting angle θ1 of the wire 401, the cutting angle θ2 of the wire 401 at the other end in the width direction, and the cutting angle θM of the wire 401 at the center in the width direction of the sheet-like member 400 are calculated (S304, S305, S306).

Sinθ1 ＝ L2A # 3 / LB (12)
Sinθ2 = L2A # 5 / LB (13)
SinθM = L2A # 4 / LB (14)
Note that the distance L2A is used to calculate the average cutting angle θH and the cutting angles θ1, θ2, and θM of the wire 401, but is not limited thereto, and only the distance L1A or the average of the distances L1A and L2A is used. Also good. In addition, it is desirable that the number of previous distances L1A and L2A to be used is appropriately set according to the interval L1, the distances L2 and L3.

  In the present embodiment, the cutting angles θ1 and θ2 of the wire 401 at both ends in the width direction of the sheet-like member 400 and the cutting angle θM of the wire 401 at the center in the width direction are calculated. The cutting angle of the wire 401 may be calculated.

  Further, the central control unit 301 positions the positions P12 # 3 and P22 # 3 of the wire 401 at the left end in the width direction of the sheet-like member 400 three times before from the storage unit 202, and the width direction left end of the sheet-like member 400 five times before. The positions P13 # 5 and P23 # 5 of the wire 401 are read (S307), and the displacement amount (length) L5 of the wire 401 at one end in the width direction of the sheet-like member 400 and the width direction and others are obtained by the following equations (15) and (16). A displacement amount (length) L6 of the end wire 401 is calculated (S308, S309).

L5 = | P22 # 3 − P12 # 3 |… (15)
L6 = | P23 # 5 − P13 # 5 |… (16)
Originally, since the wires 401 of the sheet-like member 400 are arranged in parallel in the width direction, the displacement amounts L5 and L6 are zero, but the sheet-like member 400 was wound into a roll by a roll body (not shown). 27, since the sheet-like member 400 is unwound and conveyed from the roll body, the sheet-like member 400 expands and contracts in the process, and the width of the sheet-like member 400 fluctuates. As shown in FIG. The positions e1 and e2 of the wire 401 at both ends in the width direction of the shaped member 400 may be displaced. In this case, the wires 401 at both ends in the width direction of the sheet-like member 400 have minute displacement angles φ1 and φ2. The displacement angles φ1, φ2 are set to −90 degrees <φ1, φ2 <90 degrees, and in the figure, the positions e1, e1 of the wires 401 at both ends in the width direction are displaced positively, and are displaced downward. Negative angle.

  The central control unit 301 calculates the displacement angle φ1 of the wire 401 at one end in the width direction of the sheet-like member 400 and the displacement angle φ2 of the wire 401 at the other end in the width direction by the following equations (17) and (18) (S310, S311). ), The displacement angle φM of the wire 401 at the center in the width direction of the sheet-like member 400 is calculated by the following equation (19) (S312).

Tanφ1 = L5 / L1 (17)
Tanφ2 = L6 / L1 (18)
φM = φ1 + (φ1−φ2) / 2 (19)
Further, the central control unit 301 uses the calculated results and the cutting angles θ1, θ2, and θM calculated in the processes of S304, S305, and S306 to correct the corrected cutting angle according to the following equations (20), (21), and (22): θ1h, θ2h, and θMh are calculated (S313, S314, S315).

θ1h ＝ θ1 − φ1… (20)
θ2h ＝ θ2 − φ2 (21)
θMh ＝ θM − φM… (22)
Thereafter, the central control unit 301 determines whether or not the corrected cutting angles θ1h, θ2h, and θMh are within the standard range as compared with the upper and lower limits of the standard value of the cutting angle stored in the storage unit 302 ( S316, S317, S318).

  As a result of the determination, when any one of the corrected cutting angles θ1h, θ2h, and θMh is not within the standard range, that is, out of the standard range, the central control unit 301 drives the alarm device 10 via the alarm control unit 303. An alarm is output (S319), and the angle calculation process S300 is terminated.

  In the present embodiment, the cutting angles θ1, θ2, θM are calculated and corrected after the cutting processing S200. However, by calculating the displacement angles φ1, φ2, and φM in advance in the width calculation processing S100, the cutting processing S200 is performed. It is possible to calculate the corrected cutting angles θ1h, θ2h, θMh. As a result, when the correction cutting angles θ1h, θ2h, θMh out of the standard range are calculated while cutting the sheet-like member 400, the central control unit 301 stops driving the motor 214 via the motor controller 305, and the cutting is performed. Since the movement of the device 220 is stopped and the alarm device 10 can be driven and the alarm can be output via the alarm control unit 303, the cutting device 220 can be immediately stopped to notify the abnormality.

  When all of the corrected cutting angles θ1h, θ2h, and θMh are within the standard range, the central control unit 301 stores the corrected cutting angle θMh of the wire 401 at the center in the width direction of the sheet-like member 400 in the storage unit 302 (S320). ), The angle difference θ3 of the corrected cutting angles of the wire 401 at both ends in the width direction of the sheet-like member 400 is calculated by the following equation (23) (S321), and the cutting out processing S200 is completed.

θ3 = θ1h − θ2h… (23)
By calculating the angle difference θ3, it is possible to know a change in the cutting angle of the wire 401 in the cut sheet-like member 400, for example, whether or not the wires 401 at both ends in the width direction of the sheet-like member 400 are the same.

  After the angle calculation process S300 ends, the central control unit 301 determines whether an alarm is output from the alarm device 10 (S3).

  As a result of the determination, when an alarm is output from the alarm device 10, the central control unit 301 ends the process and the wire cutting angle calculation device 1 stops.

  When no alarm is output from the alarm device 10, the sheet-like member 400 cut by the carry-out device 510 is carried out (S4), and the central control unit 301 drives the motors 114 and 214 via the motor controllers 304 and 305 to detect each of them. After the apparatuses 120A and 120B and the cutting apparatus 220 are moved to the start position (S5), the process proceeds to the width calculation process S100 executed in parallel and the following processes are repeated. As a result, the cutting angle of the wire 401 can be calculated while cutting the sheet-like member 400 successively and sequentially, and the corrected cutting angle θMh of the wire 401 at the center in the width direction of the sheet-like member 400 is stored in S320. Therefore, for example, by storing the corrected cutting angle θMh for one roll of the roll body described above, the displacement tendency of the wire 401 in the sheet-like member 400 can be known.

  According to the wire cutting angle calculation device 1 of the present embodiment described above, a magnetic change due to the wire 401 on the surface of the sheet-like member 400 is detected and detected by the electromagnetic pickup sensor 130A (130B) of the detection device 120A (120B). Based on the position of the electromagnetic pickup sensor 130A (130B) when the magnetism changes, the positions P12, P13 (P22, P23) of the wires 401 at both ends in the width direction of the sheet-like member 400 are detected, respectively, and the sheet-like member 400 The distance L1A (L2A) between the detection positions of the wire 401 at both ends in the width direction is calculated, and a position separated from the cutter 230 and the cutter 230 by a predetermined distance in the longitudinal direction of the wire 401 by the magnetoresistive detector 240 of the cutting device 220 The position P32.P33 of the wire 401 at both ends in the width direction of the sheet-like member 400 is detected based on the position of the cutter 230 when the detected magnetic resistance changes. At the same time, the distance LB between the detection positions of the wires 401 at both ends in the width direction of the sheet-like member 400 is calculated. The calculated distance L1A (L2A) and the calculated distance LB are two sides of a right triangle, and the wire cutting angle is determined based on the relationship. Since it is calculated, for example, the cutting angle (θ) of the wire 401 of the sheet-like member 400 can be calculated while cutting the sheet-like member 400 from the relationship of Sinθ = L1A (L2A) / LB. For example, when cutting a sheet-like member such as a carcass material or a belt material of a tire at a predetermined angle, the cutting angle of the wire 401 in the sheet-like member 400 including the ear rubber can be accurately calculated. It is possible to accurately inspect whether the angle satisfies the required accuracy.

  Further, after the sheet-like member 400 cut by the cutter 230 of the cutting device 220 is transported in the longitudinal direction of the wire 401 by the transport device 500, the sheet-like member 400 is newly cut to calculate the angle of the wire 401. Since the cutting angle of the wire 401 at a predetermined position in the width direction of the sheet-like member 400 is calculated based on the previous calculation distance L1A (L2A) and the previous calculation distance LB, the cutting angle of any wire 401 is accurately Can be calculated.

  Further, the cutting angles θ1 and θ2 of the wires 401 at both ends in the width direction of the sheet-like member 400 are calculated, and the angle difference θ3 between the calculated cutting angles of the wires 401 at both ends in the width direction of the sheet-like member 400 is calculated. Therefore, it is possible to know a change in the cutting angle of the wire 401 in the cut sheet-like member 400, such as whether or not the wires 401 at both ends in the width direction of the sheet-like member 400 are the same.

  Further, the two detection devices 120A and 120B provided in parallel with each other at an interval L1 respectively detect the magnetic field in the vertical direction on the surface of the sheet-like member, and each of the detection devices 120A and 120B when the detection magnetism changes. Based on the position, the positions P12, P13, P22, and P23 of the wire 401 at both ends in the width direction of the sheet-like member 400 are detected by the detection devices 120A and 120B, respectively, and each detection for the wire 401 at one end in the width direction of the sheet-like member 400 is detected. The distance L5 in the width direction of the sheet-like member 400 at the detection position of the devices 120A and 120B is calculated, and the sheet-like member 400 at the detection position of each of the detection devices 120A and 120B with respect to the wire 401 at the other width direction of the sheet-like member 400. The distance L6 in the width direction of the sheet-like member 400 is calculated, and based on the distance L1 and the calculated distances L5 and L6 of the wire 401 on both ends in the width direction of the sheet-like member 400, the wire 401 at both ends in the width direction of the sheet-like member 400 The angle between the direction and the sheet The displacements φ1 and φ2 of the wires 401 at both ends in the width direction of the member 400 are calculated, and the calculated cutting angle of the wire 401 at a predetermined position in the width direction of the sheet-like member 400 is corrected based on the calculated displacements φ1 and φ2. Since the sheet-like member 400 expands and contracts, the width of the sheet-like member 400 fluctuates and the positions e1 and e2 of the wires 400 at both ends in the width direction of the sheet-like member 400 are displaced. The cutting angle 401 can be calculated more accurately.

  Further, the cutting angle θM of the wire 401 at the center in the width direction of the sheet-like member 400 is calculated, the calculated cutting angle is corrected based on the calculated displacement degrees φ1 and φ2 of the wires 401 at both ends in the width direction of the sheet-like member 400, and the sheet Since the corrected cutting angle φMh of the wire 401 at the center in the width direction of the sheet-like member 400 is stored, the wire 401 in the sheet-like member 400 is stored by storing the corrected cutting angle θMh for one roll of the roll body described above, for example. Can be known, and can be reflected in the manufacture of the sheet-like member 400.

  When the corrected cutting angle of the predetermined wire is a value outside the standard range of the cutting angle stored in the storage unit 302, the central control unit 301 stops driving the motor 214 via the motor controller 305, and the cutting device Since the movement of 220 is stopped and the alarm device 10 is driven via the alarm control unit 303 so that an alarm can be output, the correction cutting angle out of the standard range is calculated while cutting the sheet-like member 400. Immediately, the cutting device 220 can be stopped to notify the abnormality, and the outflow of the sheet-like member 400 outside the standard range can be reliably prevented.

  Next, a second embodiment of the present invention will be described.

32 is a plan view showing a wire cutting angle calculation device according to the second embodiment of the present invention, FIG. 33 is an enlarged sectional view in the direction of arrows C′-C ′ in FIG. 32, and FIG. 34 is D′-D in FIG. 'A cross-sectional view in the direction of the arrows and arrows, Fig. 35 is a block diagram showing an electric circuit of the wire cutting angle calculation device in the second embodiment of the present invention, and Fig. 36 is a wire cutting angle calculation device in the second embodiment of the present invention. It is the whole flowchart explaining the operation | movement of. In these drawings, the same components as those of the first embodiment described above are denoted by the same reference numerals, and the description thereof is omitted.

  In the second embodiment, the sheet-like member 400 conveyed by the conveying device 500 such as a conveyor and the arrangement angle θ of the conveying device 500 are changed to be attached to the cutting device 220 of the cutting mechanism unit 200. The mounting angles of the support member 223 and the magnetoresistive detector 240 are changed.

  That is, the support member 223 and the magnetoresistive detector 240 are supported at an angle in the horizontal direction so as to be along the surface of the sheet-like member 400 by the installation portion 270 provided on one side surface of the cutting device 220.

  The installation unit 270 includes a motor 271, and the motor 271 is rotated by drive control from the control device 300 to move the magnetoresistive detector 240 and the support member 223 by a predetermined angle in the horizontal direction.

  36, the central control unit 301 drives the motor 214 via the motor controller 305 to move the cutting device 220 to the left end portion of the ball screw 203, and the reference position P3n is the ball screw 203. While moving to coincide with the start position P3s, the motor 271 is driven via the motor controller 307, and the mounting angle of the magnetoresistive detector 240 and the support member 223 is changed so as to be along the longitudinal direction of the wire 401. That is, the magnetoresistive detector 240 is arranged so that the other end 241 b of the magnetic body 241 is positioned on the wire 401 when the cutter 230 comes into contact with the wire 401. This mounting angle is set based on the arrangement angle θ of the sheet-like member 400 and the conveyance device 500 that is stored in advance in the storage unit 302 or transmitted from an external device that controls the conveyance device 500.

  Further, after the detection devices 120A and 120B and the cutting device 220 are moved to the start positions in the process of S5, the central control unit 301 is stored in advance in the storage unit 302 or transmitted from an external device that controls the transport device 500. Next, it is determined whether or not there is a change in the arrangement angle θ of the sheet-like member 400 to be cut next and the conveying device 500 (S6).

  As a result of this determination, when there is no change in the arrangement angle θ of the sheet-like member 400 and the conveying device 500, the process proceeds to the width calculation process S100 executed in parallel and the following processes are repeated.

  When the arrangement angle θ of the sheet-like member 400 and the conveying device 500 is changed, the motor 271 is driven via the motor controller 307, and the wire 401 of the sheet-like member 400 after changing the magnetoresistive detector 240 and the support member 223. The mounting angle is changed so as to be along the longitudinal direction (S7), the process proceeds to a width calculation process S100 executed in parallel, and the following process is repeated.

  According to the wire cutting angle calculation device 1 of the present embodiment, the magnetoresistive detector 240 is arranged so that the other end 241b of the magnetic body 241 is positioned on the wire 401 when the cutter 230 comes into contact with the wire 401. Thus, when the cutter 230 comes into contact with the wire 401, the gap G33 from the other end 241b of the magnetic body 241 shown in FIG. 21 to the wire 401 is reduced even when the arrangement angle θ of the sheet-like member 400 is small. Therefore, the voltage output from the coil unit 242 can be increased, and the central control unit 301 can reliably detect the positions of the wires 401 at both ends in the width direction of the sheet-like member 400. Further, by changing the mounting angle of the magnetoresistive detector 240 attached to the cutting device 220, even if the arrangement angle θ of the sheet-like member 400 and the conveying device 500 is changed, the wires at both ends in the width direction of the sheet-like member 400 are changed. The position of 401 can be reliably detected.

  In addition, the structure of this invention is not limited only to the said embodiment, You may add a various change within the range which does not deviate from the summary of this invention.

The top view which shows the wire cutting angle calculation apparatus in 1st Embodiment of this invention. AA arrow direction enlarged sectional view in FIG. BB direction enlarged sectional view in FIG. CC sectional direction enlarged sectional view in FIG. The DD sectional view direction expanded sectional view in FIG. The block diagram which shows the electric system circuit of the wire cutting angle calculation apparatus in 1st Embodiment of this invention. The principal part enlarged view explaining operation | movement of the width calculation mechanism part in 1st Embodiment of this invention. The principal part enlarged view explaining operation | movement of the width calculation mechanism part in 1st Embodiment of this invention. The principal part enlarged view explaining operation | movement of the width calculation mechanism part in 1st Embodiment of this invention. The principal part enlarged view explaining operation | movement of the width calculation mechanism part in 1st Embodiment of this invention. The principal part enlarged view explaining the principle which detects the position of the wire of the width direction both ends of the sheet-like member in 1st Embodiment of this invention. The principal part enlarged view explaining the principle which detects the position of the wire of the width direction both ends of the sheet-like member in 1st Embodiment of this invention. The principal part enlarged view explaining the principle which detects the position of the wire of the width direction both ends of the sheet-like member in 1st Embodiment of this invention. The principal part enlarged view explaining operation | movement of the width calculation mechanism part in 1st Embodiment of this invention. The principal part enlarged view explaining operation | movement of the width calculation mechanism part in 1st Embodiment of this invention. The principal part enlarged view explaining operation | movement of the width calculation mechanism part in 1st Embodiment of this invention. The principal part enlarged view explaining operation | movement of the width calculation mechanism part in 1st Embodiment of this invention. The principal part enlarged view explaining operation | movement of the cutting | disconnection mechanism part in 1st Embodiment of this invention. The principal part enlarged view explaining operation | movement of the cutting | disconnection mechanism part in 1st Embodiment of this invention. The principal part enlarged view explaining operation | movement of the cutting | disconnection mechanism part in 1st Embodiment of this invention. The principal part enlarged view explaining operation | movement of the cutting | disconnection mechanism part in 1st Embodiment of this invention. The principal part enlarged view explaining operation | movement of the cutting | disconnection mechanism part in 1st Embodiment of this invention. The principal part enlarged view explaining operation | movement of the cutting | disconnection mechanism part in 1st Embodiment of this invention. The principal part enlarged view explaining operation | movement of the cutting | disconnection mechanism part in 1st Embodiment of this invention. The principal part enlarged view explaining operation | movement of the cutting | disconnection mechanism part in 1st Embodiment of this invention. The principal part enlarged view explaining arrangement | positioning of the width calculation mechanism part and cutting machine rear part in 1st Embodiment of this invention. The principal part enlarged view explaining calculation of the displacement angle of the wire of the width direction both ends of the sheet-like member in 1st Embodiment of this invention. Entire flowchart explaining operation | movement of the wire cutting angle calculation apparatus in 1st Embodiment of this invention. 28 is a flowchart for explaining the operation of the width calculation process shown in FIG. 28 is a flowchart for explaining the operation of the cutting process shown in FIG. 28 is a flowchart for explaining the angle calculation process shown in FIG. The top view which shows the wire cutting angle calculation apparatus in 2nd Embodiment of this invention. C'-C 'line direction enlarged sectional view in FIG. D'-D 'line direction enlarged sectional view in FIG. The block diagram which shows the electric system circuit of the wire cutting angle calculation apparatus in 2nd Embodiment of this invention. Entire flowchart explaining operation | movement of the wire cutting angle calculation apparatus in 2nd Embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Wire cutting angle calculation apparatus, 10 ... Alarm, 100 ... Width calculation mechanism part, 101, 102 ... Support plate, 103A, 103B ... Ball screw, 104 ... Guide shaft, 105, 106, 107, 108, 112 ... Pulley, 108, 109 ... Belt, 110 ... Drive part, 111 ... rotating shaft, 113 ... pulse generator, 114 ... motor, 120A, 120B ... detection device, 121 ... support part, 122 ... installation part, 123 ... opening, 130A, 130B ... electromagnetic pickup sensor, 131 ... magnetic body, 131a ... One end, 132A, 132B ... Coil unit, 140A, 140B ... Rectification / smoothing circuit, 150A, 150B ... Optical sensor, 151A, 151B ... Laser light emitter, 152A, 152B ... Light receiver, 200, 200A ... Cutting mechanism, 201, 202 ... support plate, 203 ... ball screw, 204 ... guide shaft, 205, 212 ... pulley, 206 ... belt, 210 ... drive unit, 211 ... rotating shaft, 213 ... pulse generator, 214 ... motor, 220 ... cutting device, 221 ... support unit, 222 ... Projection, 223 ... Support member, 224 ... Opening, 230 ... Cutter, 231 ... Rotating shaft, 232 ... 240, magnetoresistive detector, 241 ... magnetic material, 241a ... one end, 241b ... the other end, 242 ... coil unit, 250 ... optical sensor, 251 ... laser beam emitter, 252 ... light receiver, 270 ... Installation section, 271 ... Motor, 300 ... Control device, 301 ... Central control section, 302 ... Storage section, 303 ... Alarm control section, 304,305,306,307 ... Motor controller, 400 ... Sheet-like member, 401 ... Wire, 402 ... Rubber member, 500 ... conveying device, 510 ... unloading device. L1 ... interval, L2, L3 ... distance, L4 ... transport distance.

Claims (21)

A sheet-like member formed by coating a plurality of metal wires arranged in parallel to each other in the width direction with a rubber member is cut by a cutter that moves in a direction that makes a predetermined angle with the longitudinal direction of the wire, while A wire angle calculation method for a sheet-like member for calculating a wire angle,
A change in magnetism due to the wire on the surface of the sheet-like member is detected by a first magnetic detector that moves in the width direction of the sheet-like member so as to be orthogonal to the wire,
The positions of the wires at both ends in the width direction of the sheet-like member are detected based on the positions of the first magnetic detector when the detected magnetism changes, and the distance between the detection positions of the wires at both ends in the width direction of the sheet-like member is detected. As the first distance,
Detecting magnetism between the cutter and a position away from the cutter by a predetermined distance in the longitudinal direction of the wire by a second magnetic detector that moves with the cutter,
The position of the wire at both ends in the width direction of the sheet-like member is detected based on the position of the cutter when the detected magnetism changes, and the distance between the detection positions of the wires at both ends in the width direction of the sheet-like member is set to the second Calculated as distance,
A wire angle calculation method comprising: calculating a wire angle from a relationship between the first distance and the second distance as two sides of a right triangle. By moving the first magnetic detector that generates magnetism by a magnetic body and a coil wound around the magnetic body and outputs a voltage signal generated in the coil due to the change of the magnetism in the width direction of the sheet-like member, Detecting the magnetic change due to the wire on the surface of the sheet-like member;
The voltage signal output from the first magnetic detector is rectified and smoothed, the position of the first magnetic detector when the smoothed voltage signal is detected, and the first when the smoothed voltage signal is no longer detected. The wire angle calculation method according to claim 1, wherein the positions of the wires at both ends in the width direction of the sheet-like member are detected based on the position of one magnetic detector. While the cutter is cutting the sheet-like member with the cutter so that the cutter is always in contact with one or more wires between the wires at both ends in the width direction of the sheet-like member, the second magnetic detector and the cutter Detect the magnetoresistance between the cutter and the position separated by a predetermined distance in the longitudinal direction of the wire,
The position of the cutter when the magnetic resistance changes when a cutter that is not in contact with the wire contacts the wire, and the position of the cutter when the magnetic resistance changes when the cutter that is in contact with the wire stops contacting the wire The wire angle calculation method according to claim 1 or 2, wherein the positions of the wires at both ends in the width direction of the sheet-like member are detected based on the positions. After transporting the sheet-like member cut by the cutter in the longitudinal direction of the wire, when calculating the angle of the wire by newly cutting the sheet-like member,
The angle of the wire at a predetermined position in the width direction of the sheet-like member is calculated based on the first distance calculated at the previous cutting and the second distance calculated at the previous cutting. 4. The wire angle calculation method according to any one of 3 above. The predetermined number of times is the distance from the intersection position with the movement direction of the first detector in the longitudinal direction of the wire at the predetermined position in the width direction of the sheet-like member to the intersection position with the movement direction of the second detector, and The wire angle calculation method according to claim 4, wherein the wire angle is set based on a single conveyance distance of the sheet-like member. The angle of the wire at both ends in the width direction of the sheet-like member is calculated, and the difference between the calculated angle of the wire at one end in the width direction of the sheet-like member and the calculated angle of the wire at the other end in the width direction of the sheet-like member is calculated. The wire angle calculation method according to claim 4 or 5, wherein the calculation is performed. A plurality of the first magnetic detectors that move in the width direction of the sheet-like member in parallel with each other at a predetermined interval detect the vertical magnetism on the surface of the sheet-like member, respectively.
Based on the position of each first magnetic detector when each detected magnetism changes, the positions of the wires at both ends in the width direction of the sheet-like member are detected by each first magnetic detector,
The distance in the width direction of the sheet-like member at the detection position of each first magnetic detector with respect to the wire at one end in the width direction of the sheet-like member is calculated, and each first magnet for the wire at the other end in the width direction of the sheet-like member. Calculate the distance in the width direction of the sheet-like member at the detection position of the detector,
Based on the distance between the first magnetic detectors and the calculated distance of the wire at one end in the width direction of the sheet-like member, the angle formed by the wire at one end in the width direction of the sheet-like member with the longitudinal direction of the wire And calculating the degree of displacement of the wire at one end in the width direction of the sheet-like member, and calculating the distance between the first magnetic detectors and the calculated distance of the wire at the other end in the width direction of the sheet-like member. The wire angle calculation method according to any one of claims 4 to 6, wherein an angle between the wire and the longitudinal direction of the wire is calculated as a degree of displacement of the wire at the other end in the width direction of the sheet-like member. The angle calculated with respect to the wire at the predetermined position in the width direction of the sheet-like member is corrected based on the degree of displacement calculated with respect to the wire at both ends in the width direction of the sheet-like member. Wire angle calculation method. Calculate the angle of the center wire in the width direction of the sheet-like member,
Correcting the calculated angle based on the degree of displacement calculated for the wires at both ends in the width direction of the sheet-like member,
The wire angle calculation method according to claim 8, wherein an angle corrected with respect to the wire in the center in the width direction of the sheet-like member is stored. The wire angle calculation method according to claim 8 or 9, wherein it is determined whether or not an angle corrected with respect to the wire at a predetermined position in the width direction of the sheet-like member is a value outside a predetermined range. A sheet-like member formed by coating a plurality of metal wires arranged in parallel to each other in the width direction with a rubber member is cut by a cutter that moves in a direction that makes a predetermined angle with the longitudinal direction of the wire, while A wire angle calculation device for a sheet-like member for calculating an angle of a wire,
A first magnetic detector for detecting a change in magnetism due to a wire on the surface of the sheet-like member;
Magnetic detector position detecting means for detecting the position of the first magnetic detector;
Magnetic detector moving means for moving the first magnetic detector in the width direction of the sheet-like member so as to be orthogonal to the wire;
A second magnetic detector for detecting magnetism between the cutter and a position away from the cutter by a predetermined distance in the longitudinal direction of the wire;
Cutter position detecting means for detecting the position of the cutter;
A cutter moving means for moving the cutter together with the second magnetic detector;
The position of the wire at both ends in the width direction of the sheet-like member is detected based on the position of the first magnetic detector when the magnetism detected by the first magnetic detector changes, and both ends in the width direction of the sheet-like member are detected. The distance between the detected positions of the wires is calculated as the first distance, and the positions of the wires at both ends in the width direction of the sheet-like member based on the positions of the cutter when the magnetism detected by the second magnetic detector changes , And the distance between the detection positions of the wires at both ends in the width direction of the sheet-like member is calculated as a second distance, and the first distance and the second distance are defined as two sides of a right triangle, and the wire is determined from the relationship. The wire angle calculation device is configured to calculate the angle of the wire. Comprising a signal output means for generating magnetism by a magnetic body included in the first magnetic detector and a coil wound around the magnetic body, and outputting a voltage signal generated in the coil by the change of the magnetism;
The voltage signal output from the signal output means is rectified and smoothed, the position of the first magnetic detector when the smoothed voltage signal is detected, and the first when the smoothed voltage signal is no longer detected. The wire angle calculation device according to claim 11, wherein the wire angle calculation device is configured to detect the positions of the wires at both ends in the width direction of the sheet-like member based on the position of the magnetic detector. The magnetic body of the first magnetic detector is configured to extend in the vertical direction on the surface of the sheet-like member,
The magnetic detector moving means is configured to move the first magnetic detector while maintaining a minute gap between one end of the magnetic body and the surface of the sheet-like member. The wire angle calculation apparatus described in 1. The second magnetic detector has means for detecting a magnetic resistance between the cutter and a position away from the cutter by a predetermined distance in the longitudinal direction of the wire,
The cutter that is not in contact with the wire is in contact with the wire while the cutter is cutting the sheet-like member so that the cutter is always in contact with one or more wires between the wires at both ends in the width direction of the sheet-like member. The width direction of the sheet-like member based on the position of the cutter when the magnetic resistance changes and the position of the cutter when the magnetic resistance changes when the cutter that is in contact with the wire stops contacting the wire The wire angle calculation device according to any one of claims 11 to 13, wherein the positions of the wires at both ends are respectively detected. A transport means for transporting the sheet-like member in the longitudinal direction of the wire;
When the sheet-like member cut by the cutter is conveyed by the conveying means and then the sheet-like member is newly cut to calculate the angle of the wire, the first distance calculated at the previous cutting and the previous cutting The wire angle calculation device according to any one of claims 11 to 14, wherein the wire angle at a predetermined position in the width direction of the sheet-like member is calculated based on the calculated second distance. The angle of the wire at both ends in the width direction of the sheet-like member is calculated, and the difference between the calculated angle of the wire at one end in the width direction of the sheet-like member and the calculated angle of the wire at the other end in the width direction of the sheet-like member is calculated. The wire angle calculation device according to claim 15, wherein the wire angle calculation device is configured to calculate. When a plurality of the first magnetic detectors moving in the width direction of the sheet-like member in parallel with each other at a predetermined interval detect the vertical magnetism on the surface of the sheet-like member, respectively, Based on the position of each first magnetic detector, the position of the wire at both ends in the width direction of the sheet-like member is detected by each first magnetic detector, and each first magnetic detection for the wire at one end in the width direction of the sheet-like member is performed. The distance in the width direction of the sheet-like member at the detection position of the detector is calculated, and the distance in the width direction of the sheet-like member at the detection position of each first magnetic detector with respect to the wire on the other end in the width direction of the sheet-like member is calculated. Then, based on the distance between the first magnetic detectors and the calculated distance of the wire at one end in the width direction of the sheet-like member, the wire at one end in the width direction of the sheet-like member is the length of the wire. And calculating the displacement angle of the wire at one end in the width direction of the sheet-like member based on the distance between the first magnetic detectors and the calculated distance of the wire at the other end in the width direction of the sheet-like member. The angle formed by the wire at the other end in the width direction of the sheet-like member and the longitudinal direction of the wire is calculated as the degree of displacement of the wire at the other end in the width direction of the sheet-like member. Or the wire angle calculation apparatus of 16. The apparatus further comprises correction means for correcting the angle calculated with respect to the wire at a predetermined position in the width direction of the sheet-like member based on the degree of displacement calculated with respect to the wire at both ends in the width direction of the sheet-like member. The wire angle calculation device according to claim 17. Storage means for storing the calculated angle;
The angle of the wire in the center in the width direction of the sheet-like member is calculated, the calculated angle is corrected by the correcting means, and the corrected angle with respect to the wire in the center in the width direction of the sheet-like member is stored. The wire angle calculation device according to claim 18, wherein The wire angle calculation device according to any one of claims 17 to 19, wherein an interval between each of the first magnetic detectors is set to be equal to or less than a conveyance distance of one sheet-like member by the conveyance unit. The angle determination means for determining whether or not an angle corrected with respect to the wire at a predetermined position in the width direction of the sheet-like member is a value outside a predetermined range. Wire angle calculation device.

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