JP2006131359A - Expandable and retractable winding disk mounted with elastic body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an expandable and retractable winding disk in a winding device for band material for securely holding a winding ring. <P>SOLUTION: The expandable and retractable winding disk comprises a plurality of movable arc plates 3 having outer peripheral surfaces abutting on an inner peripheral surface of the winding ring R of the band material winding device and a cam ring 2 provided with a plurality of cams 2a on its outer periphery for engaging with follower parts 3a provided on the inner face side of the movable arc plates 3. By regular-reverse rotation of the cam ring 2, the follower parts 3a of the movable arc plates 3 follow the cams 2a to expand/reduce the diameter of the outer peripheral circles of the movable arc plates 3 and to hold/release the winding ring R. Width of the outer peripheral surface of the movable arc plate 3 abutting to the winding ring R is made to be approximately the width of the winding ring and an elastic body 11 is mounted on the surface. The elastic body 11, with Shore hardness A of 50-70 and made of rubber material which is 0.5-1.5mm in thickness, is fitted and mounted to an outer peripheral groove 3b of the movable arc plate 3. The movable arc plates 3 adjacent to each other are connected by a coil spring 12 and energized so as to reduce the diameter of the outer peripheral circle. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a winding disk and a winding device according to a winding device for a strip material such as a strip steel plate.

2. Description of the Related Art A winding device that winds a strip coil around a winding ring attached to a rotating drive shaft is used as an apparatus that processes a strip steel plate in combination with a slitter or the like. As a method for mounting the winding ring on the drive shaft, an apparatus for expanding and contracting a segment (movable arc plate) inscribed in the winding ring has been disclosed (Patent Document 1). Disclosed an enlarged / reduced winding disk (Patent Document 2). In addition, an invention of torque adjusting means in winding of a winding device is also disclosed (Patent Document 3).
Japanese Patent Application Laid-Open No. 06-278951 Utility Model Registration No. 3093458 Japanese Patent Laid-Open No. 06-255852

  However, in the above-described conventional winding device, the gripping force of the ring is difficult to be equalized due to variations in the roundness of the winding ring, and there is a problem that the ring swings, shifts, or drops off during winding. Further, when the take-up ring is made of steel and has a high rigidity and a small friction coefficient, there is a problem that a slip occurs between the inner surface of the ring and a segment (movable arc plate) that is inscribed and loosens. For this reason, in the case of a steel ring or the like, there is a problem that it must be strongly tightened so as not to loosen, and it becomes difficult to remove.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-mentioned problems and to provide an expansion / contraction winding disk and a strip winding device that can easily and reliably grip and release a winding ring.

  In order to achieve the above object, an expansion / contraction winding disk equipped with an elastic body according to the present invention includes a plurality of movable arc plates each having a circumferential portion having an outer peripheral surface that comes into contact with the inner peripheral surface of the winding ring, and the movable circular plate. A plurality of cams engaged with a driven portion provided on the inner surface side of the arc plate, and a cam ring provided on the outer periphery, and by rotating the cam ring forward, the driven portion of the movable arc plate becomes a cam of the cam ring. In a winding device for a strip member that expands the movable circular arc plate by following and expands the outer circumferential circle diameter thereof, and reversely rotates the cam ring, thereby contracting the movable arc plate and reducing the outer circumferential circle diameter. The expansion / contraction winding disk is characterized in that an elastic body is mounted on an outer peripheral surface of the movable arc plate that is in contact with an inner peripheral surface of the winding ring.

  In other words, the expansion / contraction winding disk equipped with the elastic body in the belt winding device of the present invention has a plurality of cams of a rotationally driven cam ring engaged with followers of a plurality of movable arc plates disposed on the outer periphery thereof. When the cam ring is rotated forward, the movable arc plate is expanded to expand its outer circumference circle diameter to grip the inner circumference of the take-up ring, and when the cam ring is rotated reversely, the movable arc plate is contracted to reduce its outer circumference circle diameter. To reduce the winding ring. At this time, since the elastic body is mounted on the outer periphery of the movable arc plate, the friction coefficient with the winding ring gripping surface is increased, the gripping force is given by elasticity to prevent loosening, and the ring is removed by overtightening. Can be prevented.

  The width of the surface of the movable arc plate contacting the inner peripheral surface of the winding ring is made substantially the width of the winding ring, and the elastic body attached to the outer peripheral surface of the movable arc plate has a Shore A hardness of 50 to 70. A rubber material having a thickness of 0.5 to 1.5 mm is desirable.

  In the conventional expansion / contraction winding disk, a movable arc plate whose width is narrower than the winding ring width is used in order to make contact between the movable arc plate and the inner periphery of the winding ring. In the present invention, since the contact width may be wide by attaching an elastic body to the contact surface, the width of the movable arc plate can be made substantially the winding ring width. This stabilizes the winding coil and increases the holding force of the winding ring. Further, if the hardness of the elastic body attached to the outer periphery of the movable circular arc plate is less than 70 in Shore A hardness, the grip ring having a small friction coefficient is detached, and if it is softer than 50, the durability of the rubber is poor. Furthermore, if the thickness of the rubber is larger than 1.5 mm, the rigidity of the ring grip at the time of winding is lowered and the winding quality is deteriorated, and if it is thinner than 0.5 mm, an elastic effect cannot be obtained. .

It is desirable that the elastic body attached to the movable arc plate has a plurality of elastic bodies arranged on the outer periphery at a substantially symmetrical position in the circumferential direction with respect to the center of the driven portion of the movable arc plate.
As described above, the elastic body is divided into a plurality of parts on the outer periphery of the movable arc plate, so that even if the winding ring is slightly deformed, the individual elastic bodies are deformed to securely hold the winding ring. To do. Further, by arranging the divided elastic bodies at symmetrical positions around the center of the driven portion of the movable arc plate, the movable arc plate is supported at three points by the driven portion at the center of the inner surface and the elastic bodies on both sides of the outer periphery. Thus, the movable arc plate stably holds the inner periphery of the winding ring.

  It is desirable that the elastic body to be mounted on the outer periphery of the movable arc plate is mounted by being fitted into a groove provided on the outer periphery of the movable arc plate in order to easily and reliably mount the elastic body.

  The follower provided on the inner surface side of the movable arc plate has a protrusion on the outer periphery of the movable arc plate that a contact surface that engages the cam of the cam ring is a projection that is substantially the same as the cam curve of the cam ring. Desirable to stabilize the circle. The protrusion of the movable arc plate may have any shape as long as it follows the cam contour. However, if the cam ring has the same cam curve as the cam ring, the movable arc plate expands and contracts in the radial direction without tilting, so that it can be wound stably. The holding ring can be held.

  The plurality of movable arc plates are arranged such that end portions adjacent to each other are connected by an urging member, and are urged and arranged so that an outer circumference circle diameter formed by the plurality of movable arc plates is reduced. When the cam ring is reversely rotated, the outer circumference can be reliably reduced by following the movable arc plate. This urging member can be simply a coil spring, but other elastic bodies may be used.

  Further, in the winding device for a plurality of strip members, a plurality of the above-described expansion / contraction winding disks of the present invention are arranged on the drive shaft of the winding device, and each of the strips wound around the plurality of expansion / contraction winding disks is provided. It is desirable to provide a torque adjusting means for adjusting the driving torque of each of the plurality of expansion / contraction winding disks so that the tension of the belt member is constant.

  When the strip is rolled, it is inevitable that a medium height is generated in which the width center portion is thick and both width portions are thin. Therefore, in the case of slitting into a plurality of strips and winding up, as shown in FIG. 5, the winding diameter at the center in the width direction becomes large, and a difference in rotation occurs between the winding disks on both width sides. If a drive torque adjusting means is provided on the drive shaft of the winding device to adjust this rotational difference, winding of the plurality of strips can be made smooth.

  The drive torque adjusting means may be a hydraulic type that transmits torque by applying a braking force between the drive shaft and the winding ring by hydraulic pressure or the like, and an expansion / contraction winding disk by an electromagnetic coil provided on the drive shaft An electromagnetic system that absorbs torque and transmits torque may be used.

  As described above, the winding device of the present invention incorporates the gripping means of the winding ring in the thin expansion / contraction winding disk, so that the gripping of the winding ring and the torque adjustment of the winding disk are performed separately by the machine. It can be made more compact than the conventional method that is used for the purpose. Therefore, it is advantageous when a plurality of winding disks are arranged at a narrow interval.

  According to the expansion / contraction winding disk of the present invention, the winding ring can be reliably gripped with a smaller expansion force than the frictional force of the elastic body, so there is no deformation or loosening of the winding ring, and it is easy to remove and work efficiency is improved. improves. Further, the winding device in which a plurality of expansion / contraction winding disks of the present invention are arranged on the drive shaft is a band member by making the tension of the strip wound around each expansion / contraction winding disk constant by the drive torque adjusting means. Winding is performed smoothly even if there is a medium to high.

  Hereinafter, the present invention will be described in detail with reference to an illustrated embodiment. FIG. 1 is a side view of an expansion / contraction winding disk excluding a side plate according to an embodiment of the present invention, and FIGS. 2 and 3 are sectional views taken along line XX of FIG. FIG. 2 shows an embodiment thereof. FIG. 2A shows a state in which the elastic body 11 of the movable arc plate 3 is pressed against the inner periphery of the winding ring R, and FIG. 2B shows the elastic body 11 and the winding ring R. FIG. 3 is a view showing a state in which the contact is released, and FIG. 3 is a view showing another embodiment in a state in which the elastic body 11 is pressed against the inner periphery of the winding ring R. FIG. 4 is a detailed view of the movable arc plate 3, FIG. 4 (a) is a front view, and FIG. 4 (b) is an AA cross-sectional view thereof. FIG. 5 is a conceptual diagram of the winder. 6 and 7 are views showing an example of the torque adjusting means of the winder, and are sectional views showing the structure of the hydraulic torque adjusting means.

  First, the expansion / contraction winding disk of the present invention will be described with reference to FIGS. The expansion / contraction winding disk 1 includes a cam ring 2, a plurality of movable arc plates 3, and side plates 5 sandwiching them from both sides. The cam ring 2 is a hollow ring body provided with a plurality of (eight in the figure) cams 2a on the outer periphery, and is driven to rotate by inserting the drive shaft 20 of the winding device into the inner periphery. The movable circular arc plate 3 is formed of an arc body having an outer diameter that abuts on the inner circumference of the winding ring R and is divided into a plurality of pieces (eight in the figure), and the cam 2a is disposed on the inner circumference side of the arc body. The protrusion 3a of the driven portion that is engaged and driven is provided. It is desirable for the surface of the projection 3a that contacts the cam 2a to have the same cam curve as the cam 2a in order to stably expand and contract the movable arc plate 3.

  As shown in FIGS. 2 and 3, the side plate 5 is rotatably inserted into the boss portions 2 b on both sides of the cam ring 2, and the plurality of movable arc plates 3 are held by the side plate 5 so as to be slidable. A circle whose outer periphery contacts the inner periphery of the winding ring R is formed. And the pin 6 penetrated by the side plate 5 of the both sides | surfaces is penetrated by the radial long hole 4 provided in the movable circular arc board 3, and the movement of the radial direction of the movable circular arc board 3 is guided. Also, the plurality of movable arc plates 3 are provided with pins 13 at both ends, and coil springs 12 are stretched as biasing members between the pins 13 of the adjacent movable arc plates 3 so that the outer periphery of the plurality of movable arc plates 3 is The outer diameter of the circumference to be formed is urged in a direction to be reduced. As a result, the plurality of movable arc plates 3 are held by the side plate 5 so as to be rotatable with respect to the cam ring 2 and movable in the radial direction while the driven portion projections 3a on the inner surface are in pressure contact with the cam 2a of the cam ring 2. Yes.

  As shown in detail in FIG. 4, the movable arc plate 3 is provided with a long groove 3 b in the circumferential direction on the outer periphery thereof, and a plurality (two in this figure) of covering the outer peripheral surface of the movable arc plate 3 in the long groove 3 b. A rubber elastic body 11 is fitted and fixed at substantially equal intervals with respect to the center of the protrusion 3a. By dividing the elastic body 11 in this manner and arranging it on the outer periphery, the elastic force for gripping the take-up ring is increased, and the movable arc plate 3 is divided into three points by the two elastic bodies 11 and the follower projection 3a. Therefore, even if the winding ring R is deformed, the winding ring R can be stably held. The elastic rubber 11 preferably has a Shore A hardness of 50 to 70, and a thickness from the surface of the movable arc plate 3 of 0.5 to 1.5 mm. The rubber 11 may be attached to the surface by a method of fixing the movable arc plate 3 or may be fixed by covering the outer peripheral surface.

  The portion of the outer periphery of the movable arc plate 3 that contacts the inner periphery of the take-up ring R may be substantially the same as the width of the cam ring as shown by the width t ′ in FIG. 3, but as shown in FIG. Widening to a width t close to the width is desirable for stabilizing the winding coil. In the case where an elastic body is not attached to a conventional movable arc plate, since the hit becomes worse when the width t is widened, it has been narrowed as t ′. However, in the present invention, it is widened to attach an elastic body. Can also be better.

  The expansion / contraction winding disk of the present invention is used by attaching a plurality of expansion / contraction winding disks to the drive shaft 20 of the winding machine 31 of the winding device 30 as shown in FIG. The plurality of expansion / contraction winding disks 1 are mounted therebetween through a thrust bearing 26 and fastened in the axial direction by a stopper 25. As shown in the partial detail view of FIG. 5, the thrust bearing 26 is configured such that a ball 27 held by a retainer 28 is disposed between adjacent expansion / contraction winding disks 1, and the bearing 26 has a side surface of the cam ring 2 as a raceway surface. It is configured. As a result, torque adjusting means is provided as will be described later, so that slippage between the enlarged and retracted winding disks 1 can be absorbed even if there is a difference in rotational speed between adjacent enlarged and reduced winding disks 1 and smooth winding can be achieved.

  As described above, when the strip is slit into a plurality of strips and wound up, the winding diameter at the center in the width direction becomes large as shown in FIG. May occur. For this purpose, a drive torque adjusting means for adjusting the rotational difference is provided on the drive shaft of the winding device so as to smoothly wind the plurality of strips. There are a hydraulic type and an electromagnetic type as the drive torque adjusting means.

    First, the hydraulic type will be described. 6 and 7 are sectional views showing the structure of the hydraulic torque adjusting means. In the drawing, a hollow hole 15 having one opening at the center of the drive shaft 20 of the winder is provided, and a plurality of radially communicating hollow holes 15 are provided at positions where a plurality of expansion and contraction winding disks 1 of the drive shaft are mounted. A cylinder hole 16 is provided. A piston 18 fitted with an O-ring 19 is inserted into the cylinder hole 16. The piston 18 is urged so as to move in the center direction of the drive shaft by a spring 17 fitted between the inner surface of the cam ring 2 of the expansion / contraction winding disk 1 attached to the drive shaft.

  In this configuration, when a pressure such as hydraulic pressure is applied from the opening side of the hollow hole 15 of the drive shaft 20 in FIG. 6, the piston 18 comes into pressure contact with the inner surface of the cam ring 2 of the expansion / contraction winding disk 1, and the drive shaft is caused by friction therebetween. Is transmitted to the expansion / contraction winding disk 1 and the winding ring attached to the expansion / contraction winding disk 1 is rotated to wind the belt material. By such torque adjusting means, the tension applied to the belt can be made constant even if a difference occurs in the rotational speeds of the plurality of expansion / contraction winding disks as described above.

  An example of electromagnetic torque adjusting means will be described as another driving torque adjusting means. In the electromagnetic torque adjusting means, an electromagnet is incorporated in the drive shaft 20, and the electromagnet is energized to attract the cam ring 2 of the expansion / contraction winding disk 1 and transmit the rotational drive torque. Thereby, torque adjustment similar to that of the hydraulic system is possible.

  Hereinafter, the operation of the winding device and the expansion / contraction winding disk configured as described above will be described. As shown in FIG. 5, a plurality of enlarged and retracted winding disks 1 are inserted into the drive shaft 20 of the winding device 30 and the axial direction is fixed by a stopper 25. In this state, the plurality of expansion / contraction winding disks 1 are rotatable with respect to the drive shaft 20. Here, in the case of the hydraulic torque adjusting means, when the hydraulic pressure is applied to the hollow hole 15, and in the case of the electromagnetic torque adjusting means, when electric power is applied to the electromagnetic coil of the drive shaft 20, the expansion / contraction winding disk is moved with respect to the drive shaft 20. The rotation is fixed.

  The winding direction of the drive shaft will be described as normal rotation A shown in FIG. In the standby state, the protrusion 3a of the movable arc plate 3 is placed at a small diameter position on the cam surface 2a of the cam ring 2, and the outer diameter of the movable arc plate 3 is reduced as shown in FIG. Since the movable arc plate 3 is urged by the coil spring 12 in the direction in which the outer diameter is reduced, the projection 3a of the movable arc plate 3 and the cam 2a of the cam ring 2 are in close contact with each other.

  At this position, a winding ring R made of paper or the like is fitted on the outer periphery of the expansion / contraction winding disk 1, and the expansion / contraction winding disk 1 is rotated in the B direction with respect to the cam ring 2 fixed to the drive shaft 20. Then, the projection 3a of the movable arc plate 3 moves to the larger diameter side of the cam surface 2a of the cam ring 2, the outer diameter of the movable arc plate 3 is enlarged, and the outer periphery thereof is wound up as shown in FIG. Press contact the inner circumference of R. At this time, the elastic rubber 11 is attached to two places on the outer periphery of the movable arc plate 3, and the movable arc plate 3 is supported at three points by the two elastic rubbers 11 and the projection 3a as the driven portion. The handling ring R is stably held by the movable arc plate 3.

  When the belt W is wound around the winding ring R thus mounted, the drive shaft and the expansion / contraction winding disk 1 are fixed by the hydraulic method or electromagnetic method, and when the drive shaft 20 is rotated in the A direction, the rotational torque of the drive shaft is expanded or contracted. It is transmitted to the winding disk 1 and the winding operation is performed.

  As the winding proceeds, a difference in rotation occurs in each expansion / contraction winding disk 1 due to the difference in the thickness of the strip wound around each expansion / contraction winding disk 1 as described above. However, since the torque of the drive shaft is transmitted to the expansion / contraction winding disk 1 by the drive torque adjusting means, the tension applied to the wound strip is constant. Further, the thrust bearing 26 smoothly slides due to the rotation difference between the adjacent enlarged and reduced winding disks 1.

  Thus, when the winding operation is completed, the drive shaft 20 is stopped, and the expansion / contraction winding disk 1 is rotated in the A direction with respect to the drive shaft 20. Then, the projection 3a of the movable arc plate 3 moves to the smaller diameter side of the cam surface 2a of the cam ring 2, and the movable arc plate 3 is urged by the coil spring 12 in the direction of reducing the outer diameter, so the outer diameter is reduced. And away from the inner periphery of the winding ring R. And the winding ring which wound the strip | belt material is removed from a winding device.

  As described above, the expansion / contraction winding disk of the present invention has a movable arc plate having an arcuate body having a driven portion outside the cam ring having a plurality of cams provided on the outer periphery, and the movable arc plate and the cam ring are arranged relative to each other. By rotating in the forward and reverse directions, the driven portion of the movable arc plate engages with the cam of the cam ring, and the outer diameter of the movable arc plate is enlarged and reduced to grip and open the winding ring. At this time, since the elastic body is mounted on the outer periphery of the movable arc plate, the coefficient of friction with the winding ring gripping surface is large, the gripping resistance is increased by elasticity, and the winding ring is prevented from loosening and the ring is tightened excessively. The trouble of removal can be prevented.

  Further, the elastic body is divided and arranged on the outer periphery of the movable arc plate, and the movable arc plate is supported at three points by the elastic body and the projection of the driven portion, so that there is some deformation in the winding ring. However, the individual elastic bodies are deformed to securely grip the winding ring.

  Further, the width of the surface of the movable arc plate that is in contact with the take-up ring is increased to be close to the take-up ring width, the hardness of the elastic body to be attached is 50 to 70 in Shore A hardness, and the thickness is 0.5 to 1 By using a rubber material of 5 mm, a stable band can be wound up.

  By connecting the movable arc plates adjacent to each other by a biasing member such as a coil spring so that the movable arc plates are biased in the direction of reducing the outer diameter, the operation of reducing the outer diameter is performed reliably.

  Further, the winding device for a plurality of strip members is provided with a plurality of expansion / contraction winding disks of the present invention on the drive shaft, and is driven so that the tension of the strip members wound around each expansion / contraction winding disc is constant. Since the torque adjusting means is provided, even if a difference in rotation occurs between the plurality of expansion / contraction winding disks, the driving torque is adjusted and the winding of the plurality of strips is performed smoothly.

  Further, since the plurality of expansion / contraction winding disks are disposed with a thrust bearing interposed therebetween, each expansion / contraction winding disk can be smoothly wound even if a rotation difference occurs during winding.

  As described above, the strip winding device and the expansion / contraction winding disk according to the present invention ensure the holding of the winding ring and facilitate attachment / detachment, thereby improving work efficiency and contributing to industrial development. .

It is a side view of the expansion-contraction winding disk except the side plate of this invention embodiment. It is XX sectional drawing of FIG. It is XX sectional drawing of other embodiment of FIG. It is detail drawing of the movable circular arc board 3 of the expansion / contraction winding disk of this invention embodiment. It is a conceptual diagram of a winder. It is sectional drawing of a hydraulic system torque adjustment means. It is detailed sectional drawing of a hydraulic system torque adjustment means.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Expanding / contracting winding disk, 2 cam ring, 2a cam, 3 movable circular arc plate, 3a protrusion (follower part), 4 long hole, 5 side plate, 6 pin, 7 electromagnetic adsorption plate, 8 screw, 9 long hole, 11 rubber (elasticity) Body), 12 coil spring (biasing member), 13 pin, 15 hollow hole, 16 cylinder hole, 17 spring, 18 piston, 19 O-ring, 20 drive shaft, 21 power transmission shaft, 22 outer cylinder, 23 electromagnetic coil, 24 pole pieces, 25 clasps, 26 thrust bearings, 27 balls, 28 retainers, 30 winding devices, 31 winding machines, R winding rings, W winding strips

Claims (6)

Provided on the outer periphery are a plurality of movable arc plates that have an outer peripheral surface that abuts the inner peripheral surface of the winding ring, and a plurality of cams that engage with a driven portion provided on the inner surface side of the movable arc plate. A cam ring, and by rotating the cam ring in a forward direction, the follower of the movable arc plate follows the cam of the cam ring and expands the movable arc plate to expand the outer peripheral circle diameter thereof. In the expansion / contraction winding disk in the winding device for the strip material that contracts the movable arc plate by reducing the rotation of the movable arc plate to reduce the outer diameter of the outer circumference, the inner surface of the winding ring of the movable arc plate comes into contact with the winding ring. An expansion / contraction winding disk equipped with an elastic body, characterized in that an elastic body is mounted on the outer peripheral surface. The width of the surface of the movable arc plate contacting the inner peripheral surface of the winding ring is made substantially the width of the winding ring, and the elastic body attached to the outer peripheral surface of the movable arc plate has a Shore A hardness of 50 to 70. The expansion / contraction winding disk equipped with the elastic body according to claim 1, which is a rubber material having a thickness of 0.5 to 1.5 mm. The elastic body mounted on the movable arc plate is characterized in that a plurality of elastic bodies are arranged on the outer periphery of a substantially symmetrical position in the circumferential direction with respect to the center of the driven portion of the movable arc plate. Or an expansion and contraction winding disk equipped with the elastic body described in 2. 4. The elastic body according to claim 1, wherein the elastic body mounted on the outer periphery of the movable arc plate is mounted by being fitted into a groove provided on the outer periphery of the movable arc plate. 5. Enlarged and reduced winding disk equipped with. 2. The follower provided on the inner surface side of the movable arc plate is formed of a protrusion whose contact surface engaging with the cam of the cam ring is substantially the same as the cam curve of the cam ring. An expansion / contraction winding disk equipped with the elastic body described in 1. The plurality of movable arc plates are arranged such that end portions adjacent to each other are connected by an urging member and urged so that an outer circumference circle diameter formed by the plurality of movable arc plates is reduced. An expansion / contraction winding disk equipped with the elastic body according to claim 1.

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