JPH0818730B2 - Reel device - Google Patents

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-like material such as aluminum foil or a linear material such as a synthetic fiber yarn or an electric wire.

[0002]

2. Description of the Related Art In general, a winding device used for winding a synthetic resin film, a sheet of paper, aluminum foil, or a linear material such as a synthetic fiber yarn or an electric wire grips 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 clutch member by a frictional force.

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 structure of the winding shaft device is such that a plurality of gripping units assembled so that the chuck member is located 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 flange portion by the retainer, and the ring-shaped groove is formed on the side surface portion of the flange 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 a circumferential direction in a cylindrical portion of the cylinder block located between the first bearing and the second bearing, and a cylindrical piston is attached so as to be movable in a 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 expansion block is attached to the inclined surface so as to be in sliding contact therewith. 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 ends so as not to be scattered by the flange formed on the cylinder and the presser. 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 in 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 tubular 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 portion of the cylindrical body, the second piston and the second housing are moved to the first bearing side together with the holding piece by the ring-shaped piston, and the gripping piece is formed together with the expansion block. Are pushed out in the outer diameter direction and press the inner peripheral surface of the core to tighten them.

[0010]

An 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.

[0011]

In order to solve the above-mentioned problems, the winding device of the present invention has an end portion of a 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. The pressure fluid is supplied to each of the gripping units by being communicated with the through hole formed in the.

[0012]

FIG. 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 has a screw 1a formed at the end and a flange 1b formed at the other end, and the plurality of gripping units 2 are inserted into the screw 1a so as to abut 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 communicating 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 above-mentioned grip unit 2, a first bearing 6 is integrally attached to one end side of a cylindrical body 5 fitted into the shaft body 1, and a cylinder 7 is integrally attached to the other end side thereof. The second bearing 8 and the pressing ring 9 are provided between the cylinders 7.
Is movably fitted in the longitudinal direction of the shaft center. 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. . Further, 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 the 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 is formed with an inclined surface 12a 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 the side surface opposite to the second bearing 8 has a circular shape. Holes 12b having a predetermined depth are bored so as to be located between the respective inclined surfaces 12a at three positions in the circumferential direction, and a coil spring 16 is internally provided. Therefore, the middle cylinder 12 is always pressed to the right side in FIG.

The cylinder 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 cylinder 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 formed in the hole, the U-shaped groove 1e, and the hole 5a formed in the cylindrical body 5, and the piston 10 is diametrically moved. When the shaft body 1 rotates, the head of the piston 10 and the inner peripheral surface of the outer cylinder 11 are integrally connected by frictional force, and 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. Has become.

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

In the winding device of the present invention, as shown in FIG. 6, the cylinder 7 of the chuck member is positioned so as to be 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.

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

[0024]

According to the winding shaft device of the present invention, a groove for supplying pressure fluid is formed in the circumferential surface of the shaft body in the longitudinal direction of the shaft center so as to communicate with a through hole formed in the end portion of the shaft body. When the pressure fluid is supplied to the gripping unit, the machining can be performed very easily and in a short time as compared with the case where the long pressure fluid supply hole is formed in the shaft body. .

[Brief description of drawings]

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

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

3 is a view taken along the line 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 another groove shape that replaces the U-shaped groove in FIG. 2. 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 and 14 Piston 11 Outer cylinder 12 Middle cylinder 13 Gripping piece 15 Elastic ring 16 Coil spring 17 Chuck member 18 Clutch member

Claims (1)

[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 conduction hole formed at the end of the shaft body, and the pressure fluid is supplied to each gripping unit. Characteristic reel device.