JPH05246586A - Winding shaft device - Google Patents

Abstract

PURPOSE:To facilitate processing of a passage for feeding pressure fluid formed in a shaft body and works to cut and assemble parts and to reliably prevent grasped pieces from being scattered. CONSTITUTION:In a grasping unit 2 mounted on a shaft body 1, one end part of an outer cylinder 11 is supported by a first bearing 6 mounted on the one end part of a cylinder body 5 and the other end of the outer cylinder 11 is supported by a middle cylinder 12 mounted on a second bearing 8 attached movably in the longitudinal direction of an axis to the other end of the cylinder body 5 Grasped pieces 13 brought into slide contact with the slope of the middle cylinder 12 are disposed between the two bearings 6 and 8. Further, the grasping pieces 13 are protruded and retracted in the direction of their diameters through movement of the second bearing 8 by means of a piston 14 mounted on a cylinder 7 and a piston 10 is disposed between the two bearings 6 and 8.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a synthetic resin film, paper,
The present invention relates to a winding device used for winding a sheet material such as an aluminum foil or a linear material such as a synthetic fiber yarn or an electric wire.

[0002]

2. Description of the Related Art Generally, a winding device for winding a synthetic resin film, a sheet of paper, an aluminum foil or the like, or a synthetic fiber yarn, a wire of an electric wire, or the like, holds a core. And a chuck member for operating the chuck member, and the chuck member is integrally coupled to the driving shaft body by a frictional force by a clutch member.

Various proposals have been made as the winding device.
In all cases, the shape of the parts is complicated, the number of parts is large, and it is difficult to cut, and it takes a lot of time for assembly work and parts replacement work, and the gripping pieces for core tightening are scattered. Have a point. Therefore, a winding shaft device was applied as Japanese Patent Application No. 2-199858 in which the shape of the parts is simplified to facilitate the assembly work and the replacement work of the parts, and the gripping pieces for core tightening are prevented from scattering. ..

The winding shaft device has a structure in which a plurality of gripping units assembled so that the chuck member is positioned on the outer peripheral portion of the clutch member are fitted on the shaft body and tightened by nuts to be integrated. In the gripping unit, the cylinder block and the first bearing are integrally assembled to the tubular body having the collar portion by the retainer, and the ring-shaped groove is formed on the side surface portion of the collar portion of the tubular body. A ring-shaped piston is formed and is attached so as to be movable in the axial longitudinal direction. A second bearing and a pressing piece are attached to the cylinder block so as to be movable in the longitudinal direction of the axial center, and are pressed toward the first bearing by a ring-shaped piston.

Further, a plurality of holes are bored in the circumferential direction in the cylindrical portion of the cylinder block located between the first bearing and the second bearing, and a cylindrical piston is mounted so as to be movable in the diametrical direction. Has been.

A first housing is attached to the first bearing so as to cover the peripheral surface thereof, and a second housing is attached to the second bearing so as to cover the peripheral surface thereof so that the second housing covers the first housing. Is movably fitted in.

Further, a plurality of notches having an inclined surface are formed in a circumferential direction on the peripheral surface of the second housing, and the inclined surface of the extension block is attached to the inclined surface so as to be in sliding contact with the inclined surface. A gripping piece is attached so as to cover the expansion block and is tightened from the outside by a ring-shaped coil spring, and the gripping piece has only its both end portions so as not to be scattered by the flange portion formed on the cylindrical body and the retainer. It is covered with a predetermined gap.

An introduction hole for supplying a pressure fluid to each holding unit is bored through the entire length of the above-mentioned shaft, and the hole and groove of the cylinder of each holding unit and the hole of the cylinder block. It is connected to the section by a communication hole.

When the pressure fluid is supplied from the introduction hole to the hole formed on the peripheral surface of the cylindrical body of each grip unit,
The cylindrical piston is moved in the outer diameter direction, and the piston and the first housing are integrally connected by a frictional force.
When the shaft body is rotated in this state, the cylindrical body, the first housing,
The second housing and the gripping piece are adapted to rotate integrally. On the other hand, when the pressure fluid is supplied to the groove formed in the flange of the tubular body, the ring-shaped piston moves the second bearing and the second housing together with the holding piece toward the first bearing, and the gripping piece together with the expansion block. Are extruded in the outer diameter direction and press the inner peripheral surface of the core to tighten them.

[0010]

A first object of the present invention is that it is very difficult to form an introduction hole for supplying compressed air over substantially the entire length of a long shaft body. is there.

The second problem is that the structure of the gripping unit is complicated and the number of parts is large, so that a high level of skill and a lot of time are required for cutting and assembling parts.

A third problem is that since the gripping piece is covered only at its both ends by the tubular body and the brim portion of the retainer.
If the gripping piece tilts for some reason and comes into contact with the tubular body and the flange portion of the pressing tool, the pressing tool may loosen and the gripping piece may scatter.

[0013]

In order to solve the first problem, the winding device of the present invention has an end of the shaft body in which a compressed air supply groove is formed in the longitudinal direction of the shaft body on the peripheral surface of the shaft body. It is configured so as to communicate with a conduction hole formed in the portion and supply a pressure fluid to each gripping unit.

In order to solve the second and third problems, the reel unit of the present invention has a gripping unit,
A first bearing mounted on one end of the cylinder supports one end of the outer cylinder, and a second bearing mounted on the other end of the cylinder movably in the longitudinal direction of the axial center and an outer cylinder. The other end is supported and a gripping piece is arranged so as to be in sliding contact with the inclined surface formed on the middle cylinder, and the middle cylinder is moved together with the second bearing by the piston movably mounted on the cylinder. It comprises a chuck member formed so as to project and retract the gripping piece in the diameter direction, and a clutch member arranged between the two bearings.

Further, a clutch member is movably mounted in a hole formed in the peripheral surface of the cylindrical body, and the piston is moved in the diametrical direction by the pressure fluid to contact the outer cylinder or the middle cylinder. In the structure in which the gripping pieces are integrally connected by a contacting frictional force, it is preferable that the gripping pieces have a shape in which a collar portion is formed so as to restrict the amount protruding from the outer cylinder.

[0016]

1 is a schematic front view showing one embodiment of a winding device of the present invention, and FIG. 2 is a view taken along the line II in FIG.
The shaft 1 is formed with a screw 1a at the end and a flange 1b at the other end. The plurality of gripping units 2 are fitted into the screw 1a so as to abut on the flange 1b. The nut 3 screwed together is tightened together with the washer 4 to be assembled as an integral body. A U-shaped groove 1e is formed on the outer peripheral surface of the shaft body 1 in the longitudinal direction of the shaft, and a hole 1c for introducing compressed air and a hole 1d for communication are formed in the shaft portion on the side of the collar portion 1b. It is in communication. The U-shaped groove 1e may be a V-shaped groove or a shape obtained by cutting off a part 1f of the peripheral surface of the shaft body 1 as shown in FIG. These grooves can also be formed in a spiral shape on the outer peripheral surface of the shaft body.

In the grip unit 2 described above, the first bearing 6 is integrally attached to one end of the cylindrical body 5 fitted into the shaft body 1, and the cylinder 7 is integrally attached to the other end thereof. The second bearing 8 and the pressing ring 9 are provided between the cylinders 7.
Is fitted so as to be movable in the axial longitudinal direction. And
A plurality of holes 5a are formed in the cylindrical body 5 at circumferential positions between the first bearing 6 and the second bearing 8, and a cylindrical piston 10 is movably inserted in the diameter direction. .. An outer cylinder 11 is attached to the first bearing 6 so as to cover the peripheral surface thereof, and a middle cylinder 12 is attached to the second bearing 8 so as to cover the peripheral surface thereof. It is fitted so that it can move in any direction.

A ring-shaped groove 7a is formed in a side surface portion of the cylinder 7 on the side of the second bearing 8, and a ring-shaped piston 14 is fitted in the cylinder 7 so as to be movable in the axial longitudinal direction.

On the outer peripheral surface of the above-mentioned outer cylinder 11, four are arranged in the circumferential direction.
A gripping piece 1 having a substantially elliptical hole 11a formed therein and having a step portion 13a, an inclined surface 13b and a groove 13c as shown in FIG.
3 is movably fitted in the diametrical direction, and a ring-shaped coil spring or an elastic ring 15 such as a rubber ring is attached to a groove 11b formed on the peripheral surface of the outer cylinder 11 so as to cover the gripping piece 13. Has been. The number of gripping pieces 13 is appropriately set according to the diameter of the core.

The stepped portion 13a of the gripping piece 13 described above can be formed at a corner portion of a side portion as shown in FIG. 4, or can be formed at the entire peripheral portion of the side portion as shown in FIG. Also,
The middle cylinder 12 has an inclined surface 12a formed at a position corresponding to the hole 11a of the outer cylinder 11 so as to be in sliding contact with the inclined surface 13b of the gripping piece 13, and a circular side surface on the side opposite to the second bearing 8. Holes 12b having a predetermined depth are bored so as to be located between the inclined surfaces 12a at three locations in the circumferential direction, and a coil spring 16 is installed inside. Therefore, the middle cylinder 12 is always pressed to the right side in FIG.

The tubular member 5, the first bearing 6, the cylinder 7, the second bearing 8, the outer cylinder 11, the middle cylinder 12, the gripping piece 13 and the like serve as a chuck member 17, and the tubular body 5 and the piston 10 serve as a clutch member. To form.

O-rings made of synthetic rubber are attached to the joint surfaces of the washer 4, the cylinder 5 and the cylinder 7 so as to prevent the pressure fluid from leaking. , Pressure control valve for supplying pressure fluid such as pressure oil,
A pressure fluid supply pipe (not shown) having an electromagnetic switching valve or the like is connected.

When a pressure fluid is supplied from a pressure fluid supply pipe (not shown) connected to the shaft body 1, the shaft body 1
Fluid pressure acts on the bottom surface of the cylindrical piston 10 through the holes 1c, 1d, the U-shaped groove 1e and the hole 5a formed in the cylindrical body 5, and the piston 10 is diametrically moved. And the head portion of the piston 10 and the inner peripheral surface of the outer cylinder 11 are integrally connected by frictional force, and when the shaft body 1 rotates, the rotational force is transmitted to the outer cylinder 11.

On the other hand, from the U-shaped groove 1e of the shaft body 1 to the cylindrical body 5
When the pressure fluid is supplied to the groove 7a through the hole 5b bored in the cylinder 7 and the hole 7b bored in the cylinder 7, the ring-shaped piston 14 moves to move the second ring together with the holding ring 9.
The bearing 8 and the middle cylinder 12 are pressed toward the first bearing 6, and the inclined surface 12a formed on the middle cylinder 12 pushes the gripping piece 13 in the diametrical direction to press and tighten the inner peripheral surface of the core. Is becoming

When the pressure fluid supply pipeline (not shown) is switched to stop the pressure fluid supply and release the pressure fluid, the pressing force against the pistons 10 and 14 disappears, so that the piston 10 and the outer cylinder 11 are connected. While being released, the middle cylinder 12 and the second bearing 8 are moved by the coil spring 16 in the direction away from the first bearing 6, and the gripping piece 13 is contracted in the axial direction by the elastic ring 15 to release the gripping of the core. ..

In the winding shaft device of the present invention, as shown in FIG. 6, the cylinder 7 of the chuck member is positioned so that it is positioned between the adjacent cylinders 5 and between the collar portion 1b of the shaft 1 and the cylinder 5. It is also possible to have a structure in which it is fitted in the body 1 and tightened by the nut 3.

Alternatively, as shown in FIG. 7, the cylindrical piston 10 of the clutch member may press the inner peripheral surface of the middle cylinder 12.

[0028]

In the winding device of the present invention, the pressure fluid supply groove is formed on the peripheral surface of the shaft body in the longitudinal direction of the shaft center as in claim 1, and the conduction is provided at the end portion of the shaft body. If it is configured to communicate with the holes and supply pressure fluid to each gripping unit, the machining is much easier and shorter than the case of forming a long pressure fluid supply hole in the shaft. Can be done in time.

According to a second aspect of the present invention, the gripping unit supports one end of the outer cylinder by the first bearing mounted on one end of the cylinder and moves the grip unit to the other end of the cylinder in the longitudinal direction of the axial center. The other end of the outer cylinder is supported by the freely mounted second bearing and the middle cylinder, and the gripping piece is arranged so as to slidably contact the inclined surface formed on the middle cylinder located between the two bearings. When the piston is movably mounted on the cylinder and the second bearing is moved to operate the chuck member, the number of parts is reduced and the structure is simplified, so that cutting and assembling parts are performed. Can be done easily.

According to a third aspect of the present invention, the clutch member is movably mounted in a hole formed in the peripheral surface of the cylindrical body, and the piston is diametrically moved by the pressure fluid to move the piston in an outer cylinder, Alternatively, by contacting the inner cylinder and integrally connecting it by frictional force, it is not necessary to provide a cylinder for piston attachment to the cylinder body fitted to the shaft body as in the conventional case, and the number of parts is reduced. It is possible to reduce the number of compressed air leaks.

When the gripping piece is formed in the shape of the flange portion and the protrusion amount is regulated, it is possible to reliably prevent the gripping piece from scattering.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing one embodiment of a winding device of the present invention.

FIG. 2 is a view on arrow I-I in FIG.

FIG. 3 is a view on arrow II-II in FIG.

FIG. 4 is a schematic perspective view showing an embodiment of a grip piece in FIG.

5 is a schematic view showing the shape of another groove that replaces the U-shaped groove in FIG.

FIG. 6 is a schematic sectional view showing a second embodiment of the winding device of the present invention.

FIG. 7 is a schematic sectional view showing a third embodiment of the winding device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shaft body 2 Gripping unit 3 Nut 4 Washer 5 Cylindrical body 6 1st bearing 7 Cylinder 8 2nd bearing 9 Holding ring 10, 14 Piston 11 Outer cylinder 12 Middle cylinder 13 Gripping piece 15 Elastic ring 16 Coil spring 17 Chuck member 18 Clutch member

Claims (4)

[Claims] 1. A device in which a chuck member for gripping a core and a clutch member for connecting the chuck member to a shaft body are formed as one gripping unit, and a plurality of gripping units are attached to the shaft body. A pressure fluid supply groove is formed on the peripheral surface of the body in the longitudinal direction of the shaft center so as to communicate with a through hole formed at the end of the shaft body, and the pressure fluid is supplied to each gripping unit. Characteristic reel device. 2. An apparatus in which a chuck member for gripping a core and a clutch member for connecting the chuck member to a shaft body are formed as one gripping unit, and a plurality of gripping units are attached to the shaft body. The unit supports the one end of the outer cylinder by the first bearing mounted on one end of the tubular body, and the second bearing and the middle cylinder mounted on the other end of the tubular body so as to be movable in the axial longitudinal direction. The other end of the outer cylinder is supported by, and a gripping piece is disposed so as to be in sliding contact with the inclined surface formed on the middle cylinder, and the middle cylinder is moved together with the second bearing by the piston movably mounted on the cylinder. A winding shaft characterized by comprising a chuck member formed so as to move the gripping piece to project and retract in the diameter direction, and a clutch member arranged between two bearings of the tubular body. apparatus. 3. A clutch member, wherein a piston is movably mounted in a hole formed in a peripheral surface of a cylindrical body, and the piston is diametrically moved by a pressure fluid, or an outer cylinder, or
3. The reel device according to claim 2, wherein the reel unit is brought into contact with the middle cylinder and is integrally connected by a frictional force. 4. The winding device according to claim 2, wherein the gripping piece is formed in a shape having a collar portion so as to restrict the amount of protrusion from the outer cylinder.