JP2000255846A - Winding apparatus for core such as film - Google Patents

Abstract

PROBLEM TO BE SOLVED: To minimize a difference in the winding condition of a film or the like in respective cores by reducing a difference in the torque between a plurality of core chuck units installed in a row along a winding shaft. SOLUTION: This device is provided with a cylinder block for a torque control on a winding shaft 11 adjacent to the opposite side of a cylinder block 16 of the chuck block 21 of a core chuck unit on a terminal. The cylinder block for a torque control and respective cylinder blocks 16 in the middle includes a cylinder 36 for torque control at an opening on the side of the adjacent chuck block 21 spacing around a roll. A long piston 37 and a short piston for torque control are selectively-inserted into the respective cylinders 36 for torque control.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding device with an air path, such as a winding device for a plurality of film cores (winding tubes) attached to a slitter for shredding films such as plastic films and paper. The present invention relates to a winding device for a core such as a film in which a plurality of pneumatic core chuck units are arranged along an axis.

[0002]

2. Description of the Related Art As is well known, each core chuck unit in a winding device for a core of this kind is integrally rotatably mounted on a winding shaft having an air passage, and air is equally spaced around the shaft. A ring-shaped cylinder having a plurality of axially-extending cylinders extending in an axial direction capable of supplying compressed air through a passage, and a piston movable in the axial direction in the cylinder movably inserted to the open end side through the compressed air. Cylinder block and adjacent to the cylinder opening end side of the cylinder block, rotatably mounted on the winding shaft and a plurality of parts at least equidistant around the axis inside the cylinder block can move in the axial direction of the cone The friction ring is held in a state of being biased by a spring to move the cylinder block toward the cylinder side, and extends radially to a portion of the friction ring equidistant around an axis opposed to the cone-shaped portion. A chuck block having an inner / outer through guide hole, and a chuck block fitted in a radially movable chuck piece inserted in the inner / outer through guide hole in a state of being inwardly urged inwardly circumscribing the friction ring by the inwardly biasing means. By moving the friction piece to the cylinder block side by the spring by the spring or by moving the chuck piece radially outward through the movement to the cylinder block side against the spring by the supply of compressed air to the cylinder, against the spring, In addition to chucking the core, torque is transmitted from the winding shaft to the chuck block and the chuck piece (and the core) by pressing the piston and the friction ring by supplying compressed air to the cylinder.

[0003]

However, in the above-mentioned press-contact between the piston and the friction ring in the air-type core chuck unit, that is, the configuration for transmitting torque by friction, the form of these friction surfaces, that is, the friction coefficient, is not sufficient. The difference is caused by slight differences in the processing accuracy of the workpiece and the operational relationship with adjacent members, etc., so that the torque transmitted between the core chuck units is different. As a result, the winding tension of the film or the like between the cores, in other words, Then, there is a problem that the winding state becomes uneven.

[0004] In view of the above problems, the present invention makes it possible to adjust the torque of each core chuck unit with a simple configuration and operation, thereby minimizing the torque difference between the core chuck units as much as possible. It is another object of the present invention to reduce a difference in a winding state of a film or the like in each core.

[0005]

SUMMARY OF THE INVENTION According to the present invention, the above-mentioned object is attained by integrally and rotatably mounting a winding shaft having an air passage and compressing air through an air passage at equal intervals around the shaft. A ring-shaped cylinder block having a plurality of axially-extending cylinders that can be supplied and having a piston axially movable in the cylinder movably inserted toward the open end via compressed air; and a cylinder. A friction ring, which is rotatably mounted on the winding shaft adjacent to the cylinder opening end side of the block and has a plurality of cone-shaped friction rings in which a plurality of portions at least equally spaced around the axis can move in the axial direction of the cylinder. An inner / outer through guide hole which is held in a biased state toward the block side and has radially extending inner / outer guide holes at a portion equally spaced around an axis facing the cone-shaped portion of the friction ring; A core chuck unit comprising a chuck block inserted in a state in which a chuck piece movable in a radial direction into a hole is urged inward and circumscribes a cone-shaped portion of the friction ring by an inner urging means. In a core winding device such as a film arranged in a plurality of rows along the axis, a torque adjusting cylinder block that rotates integrally with the winding shaft is mounted adjacent to the end of the core chuck unit adjacent to the cylinder block opposite to the chuck block. In addition, the cylinder block of each core chuck unit intermediate with the cylinder block for torque adjustment is provided with a plurality of cylinders for torque adjustment at chuck block side end openings extending in a plurality of axial directions at intervals around the axis. The cylinder can be moved in the axial direction and can contact the end face of the chuck block on the side opposite to the cylinder block. A torque adjusting length piston, but is movable in the axial direction, a counter-cylinder block-side short piston non torque adjustment contact with the side end surface of the chuck block, solved by interpolating selectively.

In the winding device for a core according to the present invention, the transmission of torque in each core chuck unit is based on friction between a piston inserted in a cylinder of a cylinder block and a friction ring held in the chuck block. A long piston for torque adjustment inserted into the cylinder for torque adjustment provided on the cylinder block and the cylinder for torque adjustment at the end of each of the intermediate core chuck units adjacent thereto and a side end face of the chuck block opposite to the cylinder block side The friction between the core chuck unit is performed as an adjustment, and the difference in torque between the core chuck units is
The number is reduced by increasing or decreasing the number of long pistons for torque adjustment that contact the side end surface of the chuck block on the side opposite to the cylinder block.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A core winding device according to the present invention will be described with reference to FIG. 1 showing a main portion, FIG. 2 showing a part of a cylinder block, and FIG. 3 showing a side end surface of a cylinder block. An embodiment will be described. FIG. 1 shows the left part and the right part together with the unchucking state and the chucking state of the core. In the latter state, the cylinder block of the adjacent core chuck unit at the distal end side related to the torque adjustment is the shaft. FIG. 3 shows a state in which the cylinder block for torque adjustment including a piston in the left half and the right half and the cylinder block of the intermediate core chuck unit are combined. It is shown.

In the illustrated embodiment, the chucking of the core in each core chuck unit (see the right part of FIG. 1) is performed by the urging force of the coil spring 25 of the friction ring 22 provided in the chuck block 21 toward the cylinder block 16. In addition to performing the movement, the transmission of the torque in the core chucking state is not released from the core chucking state (within a range that antagonizes the urging force of the coil spring 25).
The release of the chucking of the core (see the left part of FIG. 1) is performed through the supply of the low-pressure compressed air to the cylinder block 16, and the release of the high-pressure compressed air exceeding the urging force of the coil spring 25 is performed. The present invention relates to a low-torque rotation type core rewinding device for a core which is supplied to a cylinder block 16 by supplying the cylinder block 16 of an intermediate core chuck unit which is integrally rotatably mounted on a reel 11.
In addition, eight cylinders 17 each having an opening at one end thereof are provided at regular intervals of 45 ° around the axis, and the opposite side of the cylinder 17 is opened at the center between the adjacent cylinders 17, that is, the winding shaft. At the base end (opposite end) side of No. 11, there is formed a torque adjusting cylinder 36 having a ventilation inner peripheral groove 39 and a ventilation diameter hole 40 which are open on the chuck block 21 side of the adjacent core chuck unit. In any case, the intermediate portion can be stop-engaged with a stopper 33 attached to the collar 32 mounted on the reel 11 adjacent to the bearing 15 and the tip thereof is formed by the reel 11.
A long piston 37 for torque adjustment capable of contacting the side end surface (in the illustrated example, the outer side surface of the contact ring 34 attached adjacent to the bearing 15) of the chuck block 21 of the adjacent core chuck unit on the base end side. Four short pistons 38 for torque adjustment, which cannot contact each other, are alternately inserted into the side end surface. Further, the cylinder block 16 is disposed at the end of the winding shaft 11 adjacent to the end of the winding shaft 11 of the core chuck unit at the end. Similarly to the above, eight torque adjusting cylinders 36 formed at equal intervals of 45 ° around the axis are provided with a torque adjusting long piston 37 and a torque adjusting short piston 38.
Are alternately inserted into the cylinder block 35 for torque adjustment (see the left half of FIG. 3) so as to be integrally rotatable.

In the illustrated core winding device, as is known per se, the air path of the winding shaft 11 is formed by a ventilation shaft hole 12 extending in the axial center, a ventilation hole 13 extending in the radial direction, and an outer peripheral portion. The chuck block 21 is formed with a ventilation outer groove 14 extending in the axial direction, and a collar 31 is attached to the winding shaft 11.
Is rotatably mounted via a bearing 15 fitted adjacent to the shaft. A friction ring 22 that is held in the chuck block 21 so as to be movable in the axial direction in a state where the cylinder block 16 is urged by a coil spring 25 has a 90-degree rotation around the axis.
A cone groove 23 whose bottom is reduced in diameter toward the cylinder block 16 side is formed at equal intervals at an angle of .degree., And a permanent magnet piece 24 is formed at the axial center of the bottom of the cone groove 23. On the other hand, at the portion of the chuck block 21 facing the permanent magnet piece 24, an inner / outer through guide hole 26 is provided.
Cone groove 23 of friction ring 22 via permanent magnet piece 24
The chuck piece 27 urged so as to circumscribe the hole is fitted movably in the radial direction. Further, the outer peripheral portion at the center in the axial direction of the chuck piece 27 and the outer peripheral portion of the chuck block 21 corresponding to this portion have an outer groove 2 extending continuously around the axis.
8 and 29 are formed in the outer grooves 28 and 29. Stop rings 3 for preventing separation of the chuck piece 27 due to centrifugal force are formed in the outer grooves 28 and 29.
0 is interpolated.

[0010] In the illustrated embodiment, initially, in each core chuck unit, each chuck piece 27 is moved outward in the radial direction by the bias of moving the friction ring 22 toward the cylinder block 16 by the coil spring 25. With the core (not shown) chucked,
All the cylinders 17 and the torque adjusting cylinders 36 of the cylinder blocks 16 and the torque adjusting cylinders 36 of the torque adjusting cylinder block 35 at the end of the reel 11 are provided with the ventilation shaft holes 12 of the reel 11 and the ventilation diameter. Low-pressure compressed air is supplied from the holes 13 and the ventilation peripheral grooves 14 to the ventilation inner peripheral grooves 19 and 39 of the cylinder blocks 16 and 35 and the ventilation diameter holes 20 and 40 to frictionally insert the piston 18 inserted into each cylinder 16. At the same time, the friction ring 22 is pressed against the ring 22 at a low pressure that does not retreat against the urging force of the coil spring 25, and at the same time, the long piston 37 and the short piston 38 for torque adjustment oppose the chuck block 21 facing the same low pressure. By pressing against the end face (contact ring 34) (see the right part of FIG. 1), torque is transmitted to the chuck block 21 and the chuck piece 27, and thus to the core. And, to confirm the difference state of the torque in each core chuck unit.

When it is confirmed that there is a difference in the torque, for each of the core chuck units requiring torque adjustment, the cylinder block 16 of the intermediate core chuck unit adjacent to the distal end side or the torque adjusting unit for the distal end is used. Cylinder 3 for torque adjustment of cylinder block 35
6, by replacing at least one of the long piston 37 or the short piston 38 for torque adjustment inserted with the short piston 38 or the long piston 37 and increasing or decreasing the number of the long pistons 37 or the short pistons 38, the torque is reduced. Adjust so that the difference is small.

According to the present invention, the friction ring has a cone-shaped portion whose diameter increases toward the cylinder block, and the piston inserted in the cylinder of the cylinder block is compressed with high-pressure compressed air against the urging force of the coil spring. In a high-torque core rewinding device for a core, in which the chuck piece is moved radially outward to the chucking position of the core by being pushed to the side opposite to the cylinder block, the same configuration is adopted. Can be.

[0013]

According to the core winding device of the present invention, the long piston and the short piston for torque adjustment in the cylinder block of each intermediate core chuck unit and the torque adjustment cylinder block attached to the end of the winding shaft are provided. The torque transmitted to each core chuck can be adjusted by a simple operation of increasing or decreasing the number, and thereby the difference in the winding state of the film or the like in each core can be extremely reduced.

[Brief description of the drawings]

FIG. 1 is a front view of a main portion of an embodiment of a core winding device according to the present invention, in which an upper half portion is cut away.

FIG. 2 is a partial front sectional view of a cylinder block portion of the embodiment shown in FIG.

FIG. 3 is a side view of the cylinder block of the embodiment shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Winding shaft 12 Ventilation shaft hole 13 Ventilation diameter hole 14 Ventilation peripheral groove 15 Bearing 16 Cylinder block 17 Cylinder 18 Piston 19 Ventilation inner peripheral groove 20 Ventilation diameter hole 21 Chuck block 22 Friction ring 23 Cone groove 24 Permanent magnet piece 25 Coil spring 26 Inner / outer penetration guide hole 27 Chuck piece 28 Outer groove 29 Outer groove 30 Stop ring 31 Collar 32 Collar 33 Stopper 34 Contact ring 35 Torque adjusting cylinder block 36 Torque adjusting cylinder 37 Torque adjusting long piston 38 Torque adjusting short piston 39 Ventilation Inner circumferential groove 40 Vent diameter hole

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Taisuke Imaizumi 70 Umekoji Honcho, Shimogyo-ku, Kyoto-shi, Kyoto Umekoji Sky Heights B Building No. 313 F-term (Reference) 3F055 AA01 AA05 BA12 BA15 CA02 DA04 FA01

Claims (1)

[Claims] 1. A cylinder having one end opening extending in a plurality of axial directions capable of supplying compressed air through an air passage at equal intervals around the shaft and rotatably mounted integrally on a winding shaft having an air passage. A ring-type cylinder block in which a piston movable in the axial direction is inserted through the cylinder so as to be movable toward the opening end via compressed air, and the cylinder is rotated adjacent to the cylinder opening end of the cylinder block. A plurality of parts which are mounted as possible and at least equidistantly spaced around the axis at the same time hold a friction ring which can move in the axial direction of a cone shape in a state of being biased to move the cylinder block to the cylinder side by a spring and friction. The inner and outer through guide holes having radially extending inner and outer penetrating guide holes at equidistant portions around an axis facing the cone-shaped portion of the ring, and the inner and outer penetrating guide holes are provided with radially movable chuck pieces. A core chuck unit comprising a chuck block inserted in an inwardly moving bias state in which the friction ring is circumscribed to the cone-shaped portion of the friction ring by the inner biasing means,
In a winding device for a core of a film or the like arranged in a plurality of rows along a winding shaft, a torque adjusting cylinder block that rotates integrally with the winding shaft is mounted adjacent to the end of the core chuck unit opposite to the cylinder block side. In addition, the cylinder block of each core chuck unit intermediate with the cylinder block for torque adjustment is provided with a plurality of cylinders for torque adjustment at chuck block side end openings extending in a plurality of axial directions at intervals around the axis. In the cylinder,
A long piston for torque adjustment that can move in the axial direction and can contact the side end surface of the chuck block on the side opposite to the cylinder block, and can move in the axial direction but contact the side end surface of the chuck block on the side opposite to the cylinder block. A winding device for a core of a film or the like, wherein a short piston for torque adjustment that cannot be used is selectively inserted.