JP5013182B2 - Friction reel - Google Patents

Description

  The present invention relates to a friction winding shaft capable of winding a plurality of strip-shaped sheets such as metal plates all around a core tube.

  A conventional friction winding shaft includes a hollow center support shaft that receives a rotational driving force from a winding drive mechanism, and a plurality of radial holes arranged in a plurality of rows at predetermined intervals in the longitudinal direction on the center support shaft. And a friction piece for pressing the inner peripheral surface of the core tube that is penetrated by the center support shaft, and a piston for imparting a lifting force to the friction piece. FIG. 3).

  In this friction winding shaft, a large number of friction pieces are arranged at regular intervals in the longitudinal direction of the central support shaft, and a core tube having a length equal to the width of the belt-like sheet is generally used. When the width of the belt-like sheet to be wound is equal to an integral multiple of the mutual spacing of the friction pieces in the longitudinal direction of the central support shaft, the friction force between each friction piece and the inner peripheral surface of the core pipe is the same. The magnitude of the applied winding torque is proportional to the number of friction pieces in contact with the inner peripheral surface of the core tube, and the number of friction pieces in contact with the inner peripheral surface of the core tube is proportional to the length of the core tube. Therefore, the winding tension per unit width generated in the belt-like sheet wound at the same time is equal to each other. Therefore, it is convenient when winding a plurality of belt-like sheets all at once.

  However, when the required strip-shaped sheet width is larger than the mutual interval in the longitudinal direction of the central support shaft, for example, and less than twice the mutual interval, the core tubes of the strip-shaped sheets to be wound all at once are friction wound. Even if it is installed at the position corresponding to the belt-like sheet on the shaft, the mutual interval between the core tubes and the mutual interval between the friction pieces do not coincide with each other. The number of friction pieces to be engaged may vary depending on the core tube.

  When the end of the core tube is on the friction surface of the friction piece, the portion of the friction surface that is in contact with the core tube is worn and the portion that is not in contact with the core tube is not worn, so the friction surface is locally worn. As a result, the frictional force between the friction piece and the core tube of each part of the friction winding shaft is not uniform, and the winding tension varies and causes a winding failure. In addition, even when the number of friction pieces frictionally engaged per unit length of the core tube is not the same between the core tubes, the winding tension per unit width of the belt-like sheet varies and causes a winding failure. However, since the hole for accommodating the friction piece is formed in the central support shaft, the distance between the friction pieces in the longitudinal direction of the central support shaft cannot be changed. Therefore, if the required belt-like sheet width does not match the mutual spacing of the friction pieces in the longitudinal direction of the central support shaft, the friction winding shaft cannot be used properly.

  Therefore, in the past, depending on the required strip-shaped sheet width, prepare friction winding shafts with different friction pieces in the longitudinal direction of the center support shaft, and replace the friction winding shafts according to the required strip-shaped sheet width. To do.

However, a large amount of money is required to prepare a plurality of types of friction winding shafts according to the required belt-like sheet width. In addition, it is necessary to replace the friction winding shaft with the center support shaft. In particular, the friction winding shaft for winding a metal plate is very heavy, so use a crane or the like to rewind the winding shaft itself or other It is necessary to carefully attach and detach the equipment while paying attention to the prevention of equipment damage and the safety of workers. Therefore, it takes a long time to replace the friction winding shaft, and the production efficiency is lowered.
JP-A-4-237515

  Therefore, the present invention provides a friction winding shaft that enables proper winding without changing the center support shaft according to the required width of the belt-like sheet, even if the width of the belt-like sheet to be wound is variously changed. Is an issue.

The present invention is a friction winding shaft for winding a plurality of belt-shaped sheets all around an individual core tube, and a central support shaft for receiving a winding driving force, and extending in the longitudinal direction on an outer peripheral surface of the central support shaft. A groove provided, a plurality of hollow cylindrical bodies fitted adjacent to an outer peripheral surface of the center support shaft, and the center support shaft for guiding pressure fluid supplied to an end of the center support shaft to the groove multiple and movable ring of a pair of sealing device s husband is disposed in the vicinity of both ends of the inner peripheral surface of the movable ring and the pressure fluid conduits, which slidably fitted on the outer peripheral surface of the hollow cylindrical body provided on the An inner peripheral surface of a core tube that is actuated by a pressure fluid received between the pair of sealing devices from the boundary between the hollow cylinders and that rotatably fits the friction piece accommodated in the movable ring on the outer periphery of the movable ring Friction piece pressing machine provided on the movable ring When a plurality of movable rings, as the friction surface of each said friction piece can contact with the inner peripheral surface of the core pipe without relating to the end of the core tube, and the pair of sealing devices wherein the hollow cylindrical body A movable ring restraining means is provided for restraining by being arranged and restrained in the longitudinal direction of the center support shaft so as to straddle the boundary between them, and restraining so as to rotate integrally with the center support shaft.

In order to facilitate the positioning operation of the movable ring in accordance with the change of the belt-shaped sheet width, the movable ring restraining means includes a central support shaft for arranging the plurality of movable rings in the longitudinal direction of the central support shaft. A collar portion fixed to one end portion of the cylindrical outer peripheral surface, a locking body detachably provided to the other end portion of the cylindrical outer peripheral surface of the center support shaft, between the movable rings, The interval holding ring disposed between the movable ring and the collar, and between the movable ring and the locking body, and the interval holding so that the plurality of movable rings rotate integrally with the center support shaft. It is preferable that the ring includes a fixing mechanism that fixes a spacing holding ring adjacent to the flange portion to the center support shaft, and a meshing mechanism that is provided at adjacent ends of the movable ring and the spacing holding ring. Further, the interval holding ring disposed between the movable ring and the locking body may be removed, and the locking body may be replaced with a member that directly contacts the movable ring, and between the movable ring and the collar portion. It is also possible to remove the gap retaining ring arranged in the above and provide a meshing mechanism at the end adjacent to the movable ring and the collar.

In the present invention, by extending a groove in the longitudinal direction of the central support shaft on the outer peripheral surface of the central support shaft and fitting a plurality of hollow cylindrical bodies of a predetermined length on the outer peripheral surface of the central support shaft, A pressure fluid can be supplied to the inner periphery of the movable ring, and a hollow cylindrical body having a length corresponding to the arrangement is prepared in advance for each arrangement of the plurality of movable rings required according to the width of the belt-like sheet. Thus, the supply position of the pressure fluid to the movable ring can be variously changed, and appropriate winding of the belt-like sheets having various widths is possible without exchanging the center support shaft. Further, the operation for changing the supply position of the pressure fluid to the movable ring can be easily performed in a short time. That is, for example, in a friction winding shaft in which the opening is formed on the outer peripheral surface of the center support shaft, the change of the supply position of the pressure fluid to the movable ring is troublesome to block or open a specific opening depending on the belt-like sheet width. However, in the present invention, a hollow cylindrical body having a required length prepared in advance may be sequentially fitted to the outer peripheral surface of the center support shaft, and the end surfaces may be brought into contact with each other to be positioned. Accordingly, the troublesome work of closing or opening a specific opening is not required. Therefore, according to the present invention, the mutual distance between the friction pieces can be changed according to the required width of the belt-like sheet, so that even if the width of the belt-like sheet to be wound changes, It is not necessary to replace the center support shaft with a one that meets the requirements. Therefore, it is not necessary to prepare a plurality of types of friction winding shafts according to the required belt-like sheet width, and the equipment cost can be greatly reduced. In addition, the change in the minimum width of the belt-like sheet that can be wound can be dealt with by attaching / detaching to / from the center support shaft such as a movable ring that is relatively light and easy to handle, and positioning work. The time required for this can be shortened.

  In addition, the movable ring restraining means includes a collar portion fixed to one end portion of the cylindrical outer peripheral surface of the central support shaft and a central support shaft for arranging a plurality of movable rings in the longitudinal direction of the central support shaft. Detachably provided at the other end of the cylindrical outer peripheral surface of the cylindrical body, between the movable rings, between the movable ring and the collar, and between the movable ring and the retaining body, and maintaining the spacing. A fixing mechanism for fixing a space holding ring adjacent to the flange portion to the center support shaft, and a movable ring, so that the ring and the plurality of movable rings rotate integrally with the center support shaft; And a meshing mechanism provided at each adjacent end of the spacing ring, the spacing ring is prepared in accordance with the winding conditions such as the width of the strip sheet and the number of strip sheets to be wound simultaneously. The spacing ring adjacent to the collar is fixed to the center support shaft, and the movable ring and spacing ring are centered. By alternately fitting to the outer periphery of the holding shaft and meshing and coupling with the mesh coupling means, the plurality of movable rings are constrained to a predetermined position on the center support shaft so as to rotate integrally with the center support shaft. Can do. Therefore, the position change operation of the movable ring accompanying the change of the belt-like sheet width becomes easy, and the time can be shortened. The rotation of the center support shaft to the movable ring is transmitted by the meshing mechanism from the end of the center support shaft without going through the outer peripheral surface of the center support shaft or the outer peripheral surface of the hollow cylindrical body. It is not necessary to form irregularities for meshing on the outer peripheral surface of the cylindrical shape or the hollow cylindrical body, and a movable ring is fitted to the outer peripheral surface without the irregularities, so that the pressure fluid to the friction piece pressing mechanism can be easily With a sealing device with a simple structure, even if the arrangement of the movable ring is changed, it can always be reliably sealed.

  FIG. 1 is a schematic overall view of a friction winding shaft according to an embodiment of the present invention. This friction winding shaft winds a plurality of strip-shaped sheets all around a core tube C and winds a winding roll R. The center support shaft 1 is provided. The center support shaft 1 has a shaft portion 1a at one end and a cone portion 1b at the other end. The shaft portion 1a is fixed to the main shaft 2 that is rotationally driven by a winding drive mechanism (not shown), and the cone portion 1b can be held by a bearing device 4 provided at the tip of the support arm 3 during winding. The bearing device 4 can be retracted together with the support arm 3 from the cone portion 1b when the core tube C and the annular spacer 5 are mounted or when the take-up roll R is removed. A rotary joint 6 having two systems of pressure fluid communication paths is attached to the rear side of the bearing device 4, and when the cone portion 1 b is held by the bearing device 4, pressure fluid flows from the rotary joint 6 to the tip of the cone portion 1 b. It can be supplied.

As shown in FIG. 2, a plurality of grooves 31 are provided so as to extend in the longitudinal direction on the cylindrical outer peripheral surface of the barrel portion 1 c of the center support shaft 1 and cover the grooves 31 on the outer peripheral surface of the barrel portion 1 c of the center support shaft 1. Are fitted adjacent to each other.

  On the outer peripheral surface of the cylindrical portion of the barrel portion 1c of the central support shaft 1, pressure fluid does not leak from the gap between the inner peripheral surface of the hollow cylindrical body 32 and the outer peripheral surface of the barrel portion 1c on both outer sides of the groove 31. A sealing device 33 is provided. The sealing device 33 is composed of an O-ring fitted in a circumferential groove formed on the outer peripheral surface of the body portion 1 c of the center support shaft 1. When the end surfaces of the hollow cylindrical body 32 are brought into contact with each other, a partial gap is formed between both end faces, and the pressure fluid flows from the inner peripheral side to the outer peripheral side through the gap. Since the end surfaces of the hollow cylinders 32 that are in contact with each other are highly airtight, if there is a problem that the pressure fluid is throttled at that portion, a notch is formed in the end surface of the hollow cylinder 32, and through the notch. Pressure fluid can be allowed to flow.

The center support shaft 1 is provided with a pressure fluid conduction path 34 for guiding the pressure fluid supplied to one end thereof to the groove 31, and the outer periphery of the plurality of hollow cylindrical bodies 32 as shown in FIGS. 6 and 7. the surface, each hollow cylinder 32 boundary between 32a, are fitted with a variable Dowa 10. In this embodiment, nine movable rings 10 are slidably fitted.

  As shown in FIG. 3, the movable ring 10 is provided with radial holes 11 at 16 locations in the circumferential direction. The movable ring 10 has a slide member 13 fixed to the outer periphery of the movable ring 10 with a bolt 12, and the core tube C fitted to the outer periphery of the movable ring 10 can be rotated concentrically and slid in the axial direction by the slide member 13. Can support you.

As shown in FIG. 4, near the both ends of the inner peripheral surface of the movable ring 10, a pair of sealing devices 14 and 14 each having a seal fitted in a groove formed in the circumferential direction on the inner peripheral surface are disposed. . The movable ring 10 is provided with a friction pressing mechanism 16 that can press the inner peripheral surface of the core tube C in which the friction piece 15 accommodated in the hole 11 is rotatably fitted to the outer periphery of the movable ring 10. The friction piece pressing mechanism 16 includes a piston 17 provided inside the hole 11 for pushing up the friction piece 15 and a compression coil spring 18 for pushing down the friction piece 15 when no pressure fluid is supplied to the piston 17. The piston 17 is operated by the pressure fluid supplied between the pair of sealing devices 14 and 14 from the boundary 32a between the hollow cylindrical bodies 32 . In this embodiment, a flange 15 a is provided at the lower end of the friction piece 15, a hole retaining ring 19 is attached to the inner periphery of the lower part of the hole 11, and a piston 17 is fitted into the hole 11 from the upper side of the hole 11. The friction piece 15 is attached to the friction piece 15, the compression coil spring 18 is placed on the flange 15a of the friction piece 15, the annular holding body 20 is placed thereon, and the holding body 20 is pushed down. By attaching the retaining ring 21 to the hole, the friction piece 15 is accommodated in the hole 11 and the friction piece pressing mechanism 16 is configured.

As shown in FIG. 2 , the pressure fluid communication path 34 includes a horizontal hole 34a provided in the cone part 1b of the center support shaft 1, a vertical hole 34b provided in the end part of the body part 1c, a horizontal hole 34c and a horizontal hole 34d, and an end on the cone part side. It comprises a groove 34e formed in the circumferential direction along the inner peripheral surface of the body part 1c on the outer peripheral surface of the part, and a hole 34f provided in the body part 1c. Further, in order to be able to fix the left end spacer 5b, the pressure that guides the pressure fluid to the opening 7 for supplying the pressure fluid to the friction piece pressing mechanism 16 of the left end movable ring 10 is provided in the center support shaft 1. A fluid movement passage 9 is provided. Further, in order to prevent pressure fluid from leaking from the left end of the left end hollow cylindrical body 32, an airtight device 35 similar to the above airtight device 33 is provided between the left end hollow cylinder 32 and the outer peripheral surface of the center support shaft 1. Is provided.

In the present invention, the plurality of movable rings 10 are arranged so that the friction surfaces of the friction pieces 15 can contact the inner peripheral surface of the core tube C without being related to the end of the core tube C, and the pair of sealing devices 14 are hollow cylindrical bodies 32. A movable ring restraining means is provided for restraining by being arranged and restrained in the longitudinal direction of the center support shaft 1 so as to straddle the boundary 32a between them, and restraining so as to rotate integrally with the center support shaft 1. In the embodiment shown in FIG. 1, this movable ring restraining means is one of the outer peripheral surfaces of the cylindrical body portion of the central support shaft 1 for arranging a plurality of movable rings 10 in the longitudinal direction of the central support shaft 1. A collar 22 fixed at the end, an annular locking body 23 detachably provided at the other end of the outer peripheral surface of the cylindrical body of the center support shaft 1, and a movable ring 10 between each other. Interval holding rings 24, 24a, 24b disposed between the ring 10 and the flange 22 and between the movable ring 10 and the locking body 23, and the movable ring 10 rotate integrally with the center support shaft 1. For this purpose, a fixing mechanism 25 for fixing the interval holding ring 24a adjacent to the flange 22 to the center support shaft 1, an adjacent end of the interval holding ring 24 and the movable ring 10, and a right end interval holding ring 24a and the movable ring. And 10 meshing mechanisms 26 provided at adjacent ends. In this embodiment, as shown in FIGS. 2 and 5, the fixing mechanism 25 includes a key provided on the outer peripheral surface of the body portion 1c that engages with the right-side interval holding ring 24a. In FIG. 2, the locking body 23 is fixed to the end face on the front end side of the center support shaft 1 by a bolt 27.

  As shown in FIG. 5, the meshing mechanism 26 includes a convex portion 28 fixed to the end surface of the movable ring 10 and a concave portion 29 that receives the convex portion 28 formed on the end surface of the interval retaining ring 24 or the interval retaining ring 24 a. Thus, the convex portion 28 is made of a key fitted in a groove formed on the end face of the movable ring 10 and fixed with a bolt. If necessary, a concave portion may be provided in the movable ring 10 and a convex portion may be provided in the interval holding ring 24. FIG. 5 shows a state where the meshing mechanism 26 is not meshed.

To constrain the core tube C and the spacer 5 concentrically mounted on the outer periphery of the movable ring 10 of the friction winding shaft as shown in FIG. 1 so as not to move in the longitudinal direction with respect to the center support shaft 1 during winding. Further, a flange 24af that engages with the end face of the right end spacer 5a is further formed on the outer periphery of the spacing ring 24a, and the inner peripheral face of the left end spacer 5b is accommodated in the hole 11 of the movable ring 10. The spacer 5b at the left end can be fixed to the center support shaft 1 by being pressed by the friction piece 15.

Next, a description will be given of a method for enabling the belt-like sheet to be properly wound when the width of the belt-like sheet is changed in the friction winding shaft configured as described above. 6 and 7 are explanatory views showing the arrangement of the movable ring and the core tube on the central support shaft before and after the change of the belt-like sheet width, and FIG. 6 shows the state of the main part before the belt-like sheet width is changed. The width of the belt-like sheet is w1. In this state, when the winding roll R is formed by changing the width of the belt-like sheet to w3 as shown in FIG. 7, the core tube C is arranged at a position corresponding to the belt-like sheet after the width change, and is movable. The ring 10 can contact the inner peripheral surface of the core tube C without the friction surface of the friction piece 15 reaching the boundary between the core tube C and the spacer 5, and the pair of sealing devices 14, 14 is the boundary between the hollow cylindrical bodies 32. Assuming that the central support shaft 1 is arranged in a longitudinal direction at a position straddling 32a , between the adjacent movable rings 10, 10, between the rightmost movable ring 10 and the flange 22, the leftmost movable ring 10 and each between the locking body 23, spacing the holding ring 24,24a provided with a recess 29 constituting a meshing mechanism 26 has a width as shown in FIG. 7, the previously prepared and 24b advance, the movable ring In order to change the pressure fluid supply position according to the position of FIG. Prepare a plurality of hollow cylindrical body 32 having a width such as.

When the width of the belt-like sheet to be wound was changed from w1 to w2, in FIG. 6, the locking body 23, each movable ring 10, and the interval holding rings 24, 24a, 24b before the width change were extracted from the center support shaft 1. Thereafter, each hollow cylinder 32 is further extracted, and instead, the hollow cylinder 32 after the width change prepared in advance is fitted on the outer periphery of the center support shaft 1 as shown in FIG. After that, the width maintaining rings 24a, 24, 24b and the movable ring 10 after the width change prepared in advance are fitted on the outer periphery of the center support shaft 1 in a predetermined order to engage each meshing mechanism 26. The stop body 23 is attached to the center support shaft 1. Then, as shown in FIG. 7, the movable ring 10 and the changed spacing retaining ring 24 are arranged on the center support shaft 1, and a hollow cylinder is interposed between the pair of sealing devices 14, 14 on the inner peripheral surface of each movable ring 10. Pressure fluid can be supplied from the boundary 32 between the bodies 32, and the inner peripheral surface of the core tube C can be pressed by the friction piece 15.

According to the present invention, the movable ring restraint, remove the spacing holding ring 24b at the right end shown in FIG. 6, the securing body 23 shown in FIG. 6, as shown in FIG. 8, the movable ring 10 endmost You may replace with what contact | abuts directly. The interval holding ring 24a at the right end shown in FIG. 6, the flange portion 22 shown in FIG. 6 with removing a locking mechanism 10, a recess 29 for receiving the protrusion 28 provided on the end face of the movable ring 10, as shown in FIG. 9 Alternatively, the flange 22 provided on the end surface may be replaced. In addition, the number and dimensions of the movable ring and the friction pieces attached to the center support shaft can vary depending on the design conditions such as the width of the belt-like sheet to be wound and the number of belt-like sheets to be wound at the same time.

1 is an overall view of a friction winding shaft according to an embodiment of the present invention. It is a longitudinal cross-sectional view of a center support shaft. It is a side view of the movable ring shown in FIG. It is sectional drawing which looked at the cross section along the cutting line AA of FIG. 3 in the arrow B direction. It is explanatory drawing of a meshing mechanism. It is a longitudinal cross-sectional view for demonstrating the state before the strip | belt-shaped sheet width change of the principal part of the friction winding shaft shown in FIG. It is a longitudinal cross-sectional view for demonstrating the state after changing the strip | belt-shaped sheet | seat width | variety of the principal part of the friction winding shaft shown in FIG. It is explanatory drawing for demonstrating the change aspect of a movable ring restraint means. It is explanatory drawing for demonstrating another modification of a movable ring restraint means.

C Core tube R Winding roll 1 Center support shaft 5 Spacer 7 Opening 8 Pressure fluid passage 10 Movable ring 11 Hole 14 Sealing device 15 Friction piece 16 Friction piece pressing mechanism 17 Piston 18 Compression coil spring 22 Hook 23 Locking body 24 Interval Holding ring 24a Interval holding ring 24b Interval holding ring 25 Fixing mechanism 26 Engagement mechanism 28 Convex part 29 Concave part 31 Groove 32 Hollow cylindrical body
32a Boundary 33 between hollow cylinders Sealing device

Claims (4)

A friction winding shaft that simultaneously winds a plurality of strip-shaped sheets around individual core tubes, a center support shaft that receives a winding driving force, and a groove that extends in the longitudinal direction on the outer peripheral surface of the center support shaft; A plurality of hollow cylindrical bodies fitted adjacent to the outer peripheral surface of the center support shaft, and pressure provided on the center support shaft for guiding the pressure fluid supplied to the end of the center support shaft to the groove A fluid conducting path, a plurality of movable rings slidably fitted on the outer peripheral surface of the hollow cylindrical body, a pair of sealing devices disposed near both ends of the inner peripheral surface of the movable ring, and the hollow cylindrical bodies The friction piece accommodated in the movable ring is pressed against the inner circumferential surface of the core tube rotatably fitted on the outer circumference of the movable ring. A friction piece pressing mechanism provided on the movable ring, and The movable ring having, as the friction surface of each said friction piece can contact with the inner peripheral surface of the core pipe without relating to the end of the core tube, and the boundary of the pair of sealing device between the hollow cylinder A friction winding shaft, comprising: a movable ring restraining means for restraining by being arranged in the longitudinal direction of the center support shaft so as to straddle and restraining so as to rotate integrally with the center support shaft. The movable ring restraining means includes a collar portion fixed to one end of a cylindrical outer peripheral surface of the center support shaft for disposing the plurality of movable rings in the longitudinal direction of the center support shaft, and the center A locking body detachably provided at the other end of the cylindrical outer peripheral surface of the support shaft, between the movable rings, between the movable ring and the collar, and between the movable ring and the locking body, respectively. A spacing mechanism that is disposed, a fixing mechanism that fixes the spacing ring adjacent to the flange to the central support shaft so that the plurality of movable rings rotate integrally with the central support shaft, and the spacing The friction winding shaft according to claim 1, comprising a holding ring and an adjacent end portion of the movable ring, and a meshing mechanism provided at each of the interval holding ring and the adjacent end portion of the movable ring. The friction winding shaft according to claim 2 , wherein a space retaining ring disposed between the movable ring and the locking body is removed, and the locking body is replaced with one that directly contacts the movable ring. axis. The friction winding shaft according to claim 2 , wherein a space retaining ring disposed between the movable ring and the flange portion is removed, and a meshing mechanism is provided at an end portion adjacent to the movable ring and the flange portion. axis.

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