JP4423673B2 - Sheet split winding device - Google Patents

Description

  The present invention relates to a sheet split winding device that divides a belt-like sheet into a plurality of strips, and distributes and winds the strip sheet to a plurality of winding shafts, and particularly supports the vicinity of the center of the winding shaft in order to suppress the bending of the winding shaft during winding. It relates to what can be done.

  In the conventional sheet splitting and winding device, a wide belt-like sheet is divided into various widths and distributed to two winding shafts, and the plurality of sorted belt-like sheets are wound on the winding shaft at a high speed to have an outer diameter. In order to be able to form a large winding roll, prepare a long winding shaft, support both ends of the winding shaft, and support the vicinity of the longitudinal center of this winding shaft with a holding arm By doing this, there is one that can suppress the deflection of the winding shaft during winding. The holding arm that supports the vicinity of the center in the longitudinal direction of the winding shaft includes a pair of rotatable rollers at the tip, and supports the winding shaft on the pair of rollers.

Recently, for example, a belt-like sheet such as a film for an optical member in which adhesion of a foreign substance becomes a fatal defect is required to be wound in a clean state. In this sheet split winding device, the roller of the holding arm is rotated by the winding shaft by the frictional force between the outer peripheral surface and the outer peripheral surface of the winding shaft during winding. The surface and the outer peripheral surface of the winding shaft are rubbed to generate dust, and the dust scatters and adheres to the belt-like sheet being wound, resulting in a problem that the wound belt-like sheet becomes a defective product.
JP 2001-348144 A

  Therefore, the present invention is a sheet split winding device in which the strip-shaped sheet is divided and wound around a plurality of winding shafts while the strip-shaped sheet is split by a slitter, and the vicinity of the center of the rotating winding shaft is held intermediately. An object of the present invention is to make it possible to form a winding roll that is clean and free from collapse by preventing dust and the like from being scattered from the supporting portion when supported by the arm.

Therefore, in the present invention, the winding shaft is disposed at a predetermined interval on the center support shaft that receives the rotational drive force from the rotational drive means and on the center support shaft, and the center is interposed via the first rolling bearing. A number of friction collars rotatably mounted on a support shaft; a friction member held on the central support shaft so as to be able to press against the inner peripheral surface of the friction collar; and a mechanism for pressing the friction member on the inner peripheral surface of the friction collar; , and a plurality of support wheels mounted rotatably via a second rolling bearing to the outer peripheral surface of the central support shaft with longitudinally near the center is placed between the friction collar respective said central support shaft, wherein protruding a portion of the first rolling bearing from the end face of the friction collar, and that the protruding and overhanging the ends of the supporting wheel on the outer peripheral surface of a portion, the Axial intermediate holding arm, characterized by holding the outer peripheral surface of the support ring. In addition, a part of the first rolling bearing protrudes from the end surface of the friction collar, and instead of the end portion of the supporting ring covering the outer peripheral surface of the protruding portion, the second rolling bearing from the end surface of the supporting ring. A part of the protrusion is protruded, and the end of the friction collar is covered with the outer peripheral surface of the protrusion.

In the present invention, the outer peripheral surface of the support wheel rotatably mounted via the second rolling bearing concentrically with the center support shaft of the winding shaft is held by the winding shaft intermediate holding arm, so that the support wheel is wound during winding. Instead of rotating with the shaft, the inner ring of the second rolling bearing rotates with the central support shaft inside the support wheel. A part of the first roller bearing protrudes from the end face of the friction collar attached to the center support shaft via the first roller bearing, and the end of the support ring covers the outer peripheral surface of the protruding part. Or a part of the second rolling bearing protrudes from the end surface of the support ring, and the end portion of the friction collar covers the outer peripheral surface of the protruding portion. It is possible to prevent foreign matters such as dust from being scattered. The winding shaft includes a plurality of support wheels arranged between the friction collars near the longitudinal center of the center support shaft, and the winding shaft intermediate holding arm can be repositioned along the winding shaft. Even if the division width changes and the supply position of the divided strip sheet to the winding shaft changes, the reel intermediate holding arm corresponds to the support wheel on the winding shaft where the divided strip sheet is not taken up. By moving and holding the outer peripheral surface of the support wheel, the vicinity of the center of the winding shaft can be supported, and the change of the strip-shaped sheet division width by the slitter can be easily dealt with.

  Further, the belt-shaped sheet winding rolls formed simultaneously on the winding shaft are held by one or a plurality of friction collars and rotated together with them, and a friction member is pressed onto the inner peripheral surface of each friction collar by a pressing mechanism. By attaching, the friction collar can rotate while maintaining a predetermined friction force against the center support shaft, so the winding radius between the winding rolls on the winding shaft due to uneven thickness of the belt-like sheet Even if a difference occurs, it is possible to prevent the winding tension of each divided belt-like sheet from becoming excessive or excessive.

  Therefore, according to the present invention, a wide belt-like sheet is divided into various widths and distributed to a plurality of winding shafts, and an appropriate tension is applied to each of the sorted belt-like sheets, while suppressing the bending of the winding shaft to be small. Thus, it is possible to form a high-quality take-up roll that can be wound at a high speed and that is clean and free from collapse or drawing.

  In addition, the winding shaft can be obtained by simply remodeling the existing winding shaft because the supporting wheel can be mounted between the friction collars of the conventional winding shaft and the central supporting shaft via a rolling bearing in the same manner as the friction collar. You can also.

  In a sheet split winding device for forming a clean winding roll in which a belt-shaped sheet conveyance path and a winding shaft including a slitter are housed in a clean booth having a high degree of cleanliness, a winding for winding a band-shaped sheet divided by a slitter. The handle has a relatively simple structure and a small occupation space.

  FIG. 1 is a schematic front view of a sheet split winding device according to an embodiment of the present invention, FIG. 2 is a side view of the same, and the sheet split winding device includes two winding shafts 1 arranged in parallel and the winding shaft. Bearing portions 2a and 2b that rotatably support both ends of the shaft 1, a winding intermediate holding arm 3 that supports the vicinity of the center of the winding shaft 1 and can be repositioned along the winding shaft 2, and a winding shaft during winding 1 includes a rotation driving means for a known winding shaft (not shown) for rotationally driving 1 and a slitter 4 for dividing the belt-like sheet S into a plurality of strips, and the belt-like sheet S conveyed to the slitter 4 is divided by the slitter 4. However, the divided belt-like sheets Sc are distributed to the two winding shafts 1, and the distributed belt-shaped sheets Sc are wound around the cores C attached to the winding shafts 1 to form the winding roll R.

  As shown in FIG. 3, the winding shaft 1 includes a central support shaft 5 that receives a rotational driving force from a known rotational driving means of the winding shaft, and a central support shaft that is disposed on the central support shaft 5 at a predetermined interval. 5, a large number of friction collars 7 mounted rotatably via a rolling bearing 6, a friction member 8 held on the center support shaft 5 so as to be able to press against the inner peripheral surface of the friction collar 7, and the friction of the friction member 8 A mechanism 9 for pressing the inner surface of the collar 7 and a plurality of support wheels 11 disposed between the friction collars 7 and rotatably mounted on the outer surface of the center support shaft 5 via a rolling bearing 10. .

  The portion of the center support shaft 5 to which the friction collar 7 is attached is made of a hollow cylindrical member, and both ends of the center support shaft 5 are attached to the bearing portions 2a and 2b. The center support shaft 5 is formed with holes 12 at equal intervals in the circumferential direction, each of which has an axial line extending in the radial direction from the center of the center support shaft 5 for each friction collar 7. The friction member 8 is inserted so as to be movable in the central axis direction of the hole 12.

  The pressing mechanism 9 is formed of, for example, a rubber-made expandable / shrinkable tube 13 provided in a hollow portion of the center support shaft 5, and this tube 13 receives compressed air having a required pressure from a passage provided at an end of the center support shaft 5. The friction member 8 is expanded by receiving the supply, and the friction member 8 is pushed up with a force corresponding to the compressed air pressure, and the upper end of the friction member 5 can be pressed against the inner peripheral surface of the friction collar 7.

  The outer periphery of the friction collar 7 is provided with known core fixing means 14 for fixing the cylindrical core C fitted thereto, and the core C is fixed to the friction collar 7 together during winding. To a predetermined torque.

The plurality of support wheels 11 are arranged between the friction collars 7 as shown in FIG. 4 near the center in the longitudinal direction of the center support shaft 5. A number of friction collars 7 are arranged on the central support shaft 5 so as to correspond to the entire width of the belt-like sheet S conveyed to the slitter. In the winding shaft 1 of this embodiment, in order to prevent the winding core C attached to the winding shaft 1 from being laterally shifted while winding is stopped, a support ring 11 is disposed between the adjacent friction collars 7. Except for such cases, a lateral misalignment prevention ring 15 similar to that described in, for example, JP-A-11-301893 is disposed. Further, as shown in FIG. 3, a part of the rolling bearing 6 protrudes from the end surface of the friction collar, and the end portion of the support ring 11 covers the outer peripheral surface of the protrusion portion, but the inner peripheral surface of the end portion of the support ring 11. the outer peripheral surface of the Tokorogari bearing 6, and between the end face and the end face of the friction collar 7 of the support wheels 11, Ru Tei provided a slight gap so as not rubbed each other. The winding shaft 1 optionally run over a portion of the rolling bearing 10 from the end face of the support wheel 11, there are also cases be configured to overlie the end of the friction collar on the protruding portion.

  The winding shaft intermediate holding arm 3 swings on a fulcrum shaft 17 parallel to the winding shaft 1 on the support base 16 so that the winding shaft intermediate holding arm 3 can reach the supporting position shown by a solid line in FIG. 5 and the retracted position shown by a chain line in FIG. It is mounted movably. In order to hold the outer peripheral surface of the support wheel 11, a concave holding portion 18 that fits the outer peripheral surface of the support wheel 11 is provided at the tip of the winding shaft intermediate holding arm 3. It comprises a curved surface 18a formed at the tip of the shaft intermediate holding arm 3 and a curved surface 18b formed at the tip of the movable member 19, and the movable member 19 is mounted on the winding shaft intermediate holding arm 3 so as to be slidable in the longitudinal direction, The fluid pressure cylinder device 20 can move back and forth between a retracted position indicated by a chain line in FIG. 5 and a holding position indicated by a solid line in FIG.

  As shown in FIG. 1, the support 16 is slidably mounted on a rail 22 on a beam member 21 that extends parallel to the winding shaft 1, and is necessary on the rail 22 by a known fixing means (not shown). It can be fixed in position. The beam member 21 is fixed between a pair of frames 23 that support the bearing portions 2a and 2b.

  In the sheet split winding device configured as described above, when the strip-shaped sheet S is split and wound, the core C of each of the split strip-shaped sheets Sc is attached onto the winding shaft 1 and the pair of winding shafts 1 is attached. After supporting at a predetermined winding position between the frames 23, the outer peripheral surface of the support wheel 11 is held by the winding shaft intermediate holding arm 3. Thus, the winding shaft 1 is supported at both ends and near the center. And after connecting the front-end | tip of the strip | belt-shaped sheet | seat Sc divided | segmented by the slitter 4 to the outer peripheral surface of each winding core C, while conveying the strip | belt-shaped sheet | seat S to the slitter 4, the center support shaft 5 of the winding shaft 1 is rotationally driven. Compressed air is supplied to the tube 13 and the pressing mechanism 9 is operated to rotate each core C together with the friction collar 7.

  In order to hold the outer peripheral surface of the support wheel 11 with the winding shaft intermediate holding arm 3, the winding shaft 1 is divided with the winding shaft intermediate holding arm 3 in the retracted position and the movable member 19 in the retracted position. The belt-like sheet Sc is moved to a position corresponding to one of the support wheels 11 at a place where the belt-like sheet Sc is not taken up, and then the winding shaft intermediate holding arm 3 is tilted to the support position and the movable member 19 is held by the fluid pressure cylinder device 20. At the position, the concave holding portion 18 receives the lower part of the outer peripheral surface of the support wheel 11. When the center support shaft 5 is rotationally driven in this state, the frictional force between the outer ring 10a of the rolling bearing 10 and the inner ring 10b is caused by the frictional force between the concave holding portion 18 of the winding shaft intermediate holding arm 3 and the outer peripheral surface of the support ring 11. Therefore, the inner ring 10 b of the rolling bearing 10 that supports the support wheel 11 rotates together with the center support shaft 5 inside the support wheel 11.

  According to the present invention, the winding shaft intermediate holding arm is not limited to receiving and holding the lower part of the outer peripheral surface of the support wheel by the concave holding part, and clamps and holds the outer peripheral surface of the support wheel as necessary. It may be possible. The winding shaft intermediate holding arm may slide in the longitudinal direction to reach the support position and the retracted position. Further, the sheet split winding device may be provided with three or more winding shafts.

1 is a schematic front view according to an embodiment of the present invention. It is a side view concerning one example of the present invention. It is sectional drawing which expanded and showed the principal part longitudinal cross-section of the winding shaft. It is a front view which shows the longitudinal direction center vicinity part of a winding shaft. It is a side view of a winding axis intermediate holding arm.

Explanation of symbols

S belt-like sheet 1 winding shaft 2a bearing portion 2b bearing portion 3 winding shaft intermediate holding arm 4 slitter 5 center support shaft
6 First Rolling Bearing 7 Friction Collar 8 Friction Member 9 Pressing Mechanism 10 Second Rolling Bearing 11 Support Wheel 18 Concave Holding Part 19 Movable Member 20 Fluid Pressure Cylinder Device 22 Rail

Claims (2)

A plurality of winding shafts, a pair of bearing portions that support both ends of the winding shaft, a winding shaft intermediate holding arm that supports the vicinity of the center in the longitudinal direction of the winding shaft and can be repositioned along the winding shaft; A sheet that includes a rotation driving means for the winding shaft and a slitter that divides the belt-like sheet into a plurality of strips, and divides the belt-like sheet by the slitter and distributes the divided belt-like sheet to the plurality of winding shafts for winding. In the split winding device, the winding shaft is disposed with a center support shaft that receives a rotational driving force from the rotational driving means, a predetermined interval on the center support shaft, and a first rolling bearing. numerous the friction collar mounted rotatably on the central support shaft through said friction member holding the central support shaft can be pressed to the inner peripheral surface of the friction collar, the friction collar of the friction member A pressing mechanism of the plane, a plurality of support that rotatably mounted via a second rolling bearing to the outer peripheral surface of the central support shaft as well as arranged between the friction collar in the longitudinal direction near the center of each said central support shaft A portion of the first rolling bearing protrudes from an end surface of the friction collar, and an end portion of the support wheel covers an outer peripheral surface of the protruding portion; A sheet split winding device that holds the outer peripheral surface of the support wheel. Instead of a part of the first rolling bearing protruding from the end face of the friction collar and the end of the support ring covering the outer peripheral surface of the protruding part,
2. The sheet split according to claim 1, wherein a part of the second rolling bearing protrudes from an end surface of the support ring, and an end portion of the friction collar covers an outer peripheral surface of the protruding portion. Winding device.

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