JPH075228B2 - Bobbin gripping device for winder - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a bobbin holding device for a winder in which a compressed air supply mechanism and a brake mechanism are installed at an end of a bobbin holding shaft.

(Prior Art) Generally, when winding a synthetic fiber yarn, a winding machine including a yarn traversing device, a bobbin holding device, and a roller device for applying a surface pressure is used. As shown in FIG. 4, the bobbin gripping device described above is configured such that the cylindrical body 3 and the elastic ring 4 are alternately fitted in the axial center longitudinal direction on the shaft body 2 whose one end is rotatably supported by the bearing on the machine frame 1. The stepped portion formed on the shaft body 2 by inserting the elastic ring 4 on the support side of the shaft body 2
2a, so that a pressing force is applied to the elastic ring 4 toward the supporting side of the shaft body 2 by the piston 5 and the spring 6 which are the pressing members attached to the other end of the shaft body 2. The elastic ring 4 is compressed and bulged in the diametrical direction, and the inner surface of the bobbin 50 is pressed into contact with the bobbin 50 to be gripped. When the bobbin 50 is taken out from the shaft body 2, the electromagnetic switching valve 32 of the compressed air supply mechanism 30 installed at the end of the shaft body 2.
Is operated to switch the supply path to supply compressed air from the compressed air supply pipe 35 to the compressed air chamber 33d of the cylinder 33 so that the piston rod 3
3a is projected and is connected to the end surface of the shaft body 2 so that a compressed air supply hole is formed.
33b is communicated with the hole 2b, and compressed air is supplied from the compressed air supply pipe 36 into the hole 2b. Then, the compressed air compresses the spring 6 to move the piston 5 to the tip side of the shaft body 2, restores the elastic ring 4 to its original shape, and separates it from the inner surface of the bobbin to release the grip of the bobbin. Further, a disc 9 of a brake mechanism 8 for promptly stopping the rotation of the shaft 2 is integrally attached to an end portion of the shaft 2 on the supporting side, and the disc 9 is pressed from both sides. A brake shoe 10 for applying a brake is attached to the machine frame 1 by a bracket 11.

The shaft 2 is rotated by an integrally formed motor or the like, or is rotated by a surface pressure imparting roller or the like.

(Problem) In the bobbin holding device as described above, the bobbin is attached to the shaft body 2
When it is inserted into and gripped by, the electromagnetic switching valve 32 of the compressed air supply mechanism 30 is operated to switch the supply path, and the compressed air supply pipes 35, 36 are supplied.
At the same time as stopping the supply of compressed air from the
To supply the compressed air to the compressed air chamber 33c of the cylinder 33 to retract the piston rod 33a. Then, the compressed air supplied into the hole 2b of the shaft body 2 is instantaneously discharged from the end portion of the shaft body 2. At this time, when the compressed air flows out from the hole 2b of the shaft body 2, it collides with the end surface of the piston rod 33a and flows out radially from the gap between the shaft body 2 and the piston rod 33a. Then, the abrasion powder and the like of the brake shoes attached to the disc 9 of the brake mechanism 8 and the brake shoes 10 are blown off and scattered. Therefore, there is a problem that the package is contaminated by the abrasion powder of the brake shoes scattered on the tip side of the shaft body 2.

(Object) It is an object of the present invention to provide a bobbin holding device for a winding machine, which can prevent yarn stains on a package due to scattering of abrasion powder of a brake shoe or the like generated during a bobbin holding operation.

(Means for Solving the Problems) A bobbin holding device for a winding machine according to the present invention for solving the above-mentioned problems includes an elastic ring and a cylindrical body on a shaft body whose one end is rotatably mounted on a machine frame. And are alternately inserted in the longitudinal direction of the shaft, and pressing force is applied to the elastic ring by a pressing means provided at the other end of the shaft, and compressed air supply provided at the end of the shaft on the supporting side. In a bobbin gripping device configured to release the pressing force of the pressing means by a mechanism, and to stop the rotation of the shaft body by a brake mechanism provided at the support side end of the shaft body, the compressed air supply mechanism, A piston for supplying compressed air, a cylinder for bringing the piston into contact with and separate from the end of the shaft, and a pipe for supplying and discharging compressed air connected to the piston and the cylinder are connected to the piston. The compressed air supply and discharge pipe is provided with a compressed air rapid discharge valve.

In addition, the above-described compressed air supply mechanism may be configured by a compressed air supply piston, a cylinder that brings the piston into contact with and separate from the end of the shaft body, and a compressed air supply and discharge pipe connected to the piston and the cylinder. At the same time, the compressed air supply and discharge pipe connected to the cylinder is provided with a piston moving speed control valve, or a compressed air supply mechanism is used to bring the compressed air supply piston and the piston into contact with the end of the shaft body. The cylinder may be separated and the compressed air supply / discharge pipe connected to the piston and the cylinder, and the compressed air supply / discharge pipe may be provided with an electromagnetic switching valve.

(Example) The structure of one example of the bobbin holding device of the winding machine of the present invention will be described with reference to the drawings.

The structure of the bobbin gripping portion of the shaft body 2 and the structure of the brake mechanism 8 in the bobbin gripping device of the present invention are the same as those of the conventional bobbin gripping device shown in FIG. The mechanical section will be described. In the figure, reference numeral 15 is a compressed air supply mechanism installed at the end of the shaft body 2, and 16 is a cylinder attached to the machine casing 1 by a bracket 11. Reference numeral 18 denotes an electromagnetic switching valve, one side of which is connected to a main tube 17 for supplying compressed air and the other side is connected to tubes 19 and 20 for supplying compressed air. Further, a hole 16b is formed in the piston rod 16a of the cylinder 16 described above, and a compressed air supply / discharge pipe 21 having a quick exhaust valve 22 is connected thereto, and the other of the pipes 21 is connected to the compressed air supply pipe 20. There is. The rapid exhaust valve 22 described above has a cross-sectional area of the compressed air passage in the valve mechanism on the discharge side larger than that of the electromagnetic switching valve 18,
Moreover, the flow resistance is small. Further, the quick exhaust valve 22 needs to be installed at a remote position so that the compressed air is not discharged toward the brake mechanism 8.

When the compressed air is supplied to the hole 2b of the shaft body 2 by the compressed air supply mechanism 15 described above, the electromagnetic switching valve 18 is operated to supply the compressed air from the compressed air supply pipe 20 to the cylinder 16 and the piston rod 16a.
Is connected to the end face of the shaft body 2 to project compressed air into the quick exhaust valve.
Pneumatic supply and discharge pipe 21 with 22 and piston rod 16
It is supplied from the hole 16b of a into the hole 2b of the shaft body 2. Next, shaft 2
When the compressed air supplied to the hole 2b is discharged, the electromagnetic switching valve 18 is operated to switch the supply path, supply of compressed air to the compressed air supply pipe 20 is stopped, and compressed air is supplied to the compressed air supply pipe 19. To supply. Then, the pressure in the compressed air chamber 16c in the cylinder 16 becomes equal to the pressure in the compressed air chamber 16d, and then the compressed air chamber 16c.
When the internal pressure becomes higher, the compressed air in the compressed air chamber 16d is pushed out and the piston rod 16a is retracted and cut off from the end face of the shaft body 2. From the above-mentioned operation of switching the compressed air supply position to the piston rod retracting. In the meantime, the compressed air supplied into the hole 2b of the shaft body 2 is discharged from the quick exhaust valve 22, and the compressed air is almost eliminated. Therefore, even if the wear powder of the brake shoes adheres to the brake mechanism 8, it will not be blown off.

Instead of the compressed air supply mechanism 15 described above, speed control valves 23 and 24 are connected to compressed air supply pipes 19 and 20 as shown in FIG. 2, or electromagnetic switching is made to the pipe 21 as shown in FIG. It is also possible to connect the valve 25 and move the piston rod 16a of the cylinder 16 after the compressed air in the hole 2b of the shaft body 2 is almost discharged, but in this case as well, the position away from the brake mechanism 8 is used. It is necessary to allow the compressed air to be discharged.

It is also possible to implement it by a configuration in which a rapid exhaust valve is connected to the compressed air supply / discharge pipe 21 in FIG.

(Effect of the invention) The bobbin gripping device of the winding machine of the present invention is as described in claim 1.
An elastic ring and a tubular body are alternately fitted and inserted in a shaft body whose one end is rotatably attached to a machine frame in the longitudinal direction of the axial center, and the elastic ring is attached to the elastic ring by a pressing means provided at the other end of the shaft body. A pressing force is applied to release the pressing force of the pressing means by a compressed air supply mechanism provided at the supporting side end portion of the shaft body, and the shaft is provided by a brake mechanism provided at the supporting side end portion of the shaft body. In the bobbin gripping device configured to stop the rotation of the body, the compressed air supply mechanism includes a piston for compressed air supply, a cylinder that brings the piston into contact with and separates from the end of the shaft body, and the piston and the cylinder. The compressed air supply / discharge pipe is connected to the piston, and the compressed air supply / discharge pipe connected to the piston is provided with a compressed air rapid discharge valve. Out timing and pressure can be controlled timing for moving the piston for supplying,
The piston can be separated from the shaft body after the compressed air supplied to the shaft body is discharged by the valve for rapid discharge of the compressed air. Therefore, the abrasion powder such as the brake shoes attached to the brake mechanism is not blown off, and the yarn contamination of the package due to the abrasion powder can be prevented.

A compressed air supply mechanism according to claim 2, a compressed air supply piston, a cylinder for bringing the piston into contact with and away from the end of the shaft, and a compressed air supply and discharge pipe connected to the piston and the cylinder. And a structure in which a moving speed adjusting valve is provided in a compressed air supply / discharge pipe connected to the cylinder, or a compressed air supply mechanism is provided as in claim 3, and a compressed air supply piston and the piston are provided. The cylinder for contacting and separating from the end of the shaft and the compressed air supply / discharge pipe connected to the piston and the cylinder are connected to the compressed air supply / discharge pipe connected to the piston and the cylinder. The same effect as described above can be obtained even if the configuration is provided.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an embodiment of a bobbin holding device for a winding machine according to the present invention. 2 and 3 are schematic sectional views showing another embodiment of the compressed air supply mechanism of the bobbin holding device of the present invention. FIG. 4 is a schematic sectional view showing an embodiment of a bobbin holding device for a conventional winding machine. 2: Shaft body, 8: Brake mechanism, 9: Disc, 10: Brake shoe, 15: Pneumatic supply mechanism, 16: Cylinder, 17: Main pipe for compressed air supply, 18, 25: Electromagnetic switching valve, 19, 20: Compressed air Supply pipe, 21: Pneumatic supply and discharge pipe, 22: Quick exhaust valve, 23, 24: Speed control valve,

Claims (3)

[Claims] 1. An elastic ring and a tubular body are alternately fitted in a shaft body whose one end is rotatably mounted on a machine frame in a longitudinal direction of a shaft center,
A pressing force is applied to the elastic ring by a pressing means provided at the other end of the shaft body, and a pressing force of the pressing means is released by a compressed air supply mechanism provided at a support side end part of the shaft body. In a bobbin gripping device configured to stop the rotation of the shaft body by a brake mechanism provided at a support side end portion of the shaft body, the compressed air supply mechanism includes a compressed air supply piston and the piston as the shaft. A cylinder for abutting against and separating from the end of the body, and a compressed air supply / discharge pipe connected to the piston and the cylinder, and a compressed air rapid discharge valve for the compressed air supply / discharge pipe connected to the piston. A bobbin holding device for a winder, characterized in that it is provided. 2. An elastic ring and a cylindrical body are alternately fitted in a shaft body whose one end is rotatably mounted on a machine frame in a longitudinal direction of a shaft center,
A pressing force is applied to the elastic ring by a pressing means provided at the other end of the shaft body, and a pressing force of the pressing means is released by a compressed air supply mechanism provided at a support side end part of the shaft body. In a bobbin gripping device configured to stop the rotation of the shaft body by a brake mechanism provided at a support side end portion of the shaft body, the compressed air supply mechanism includes a compressed air supply piston and the piston as the shaft. A cylinder for contacting with and separating from the end of the body, and a compressed air supply / discharge pipe connected to the piston and the cylinder, and a piston moving speed adjusting valve for the compressed air supply / discharge pipe connected to the cylinder. A bobbin gripping device for a winder, characterized in that: 3. An elastic ring and a cylindrical body are alternately fitted and inserted in a longitudinal direction of an axial center on a shaft body having one end rotatably mounted on a machine frame,
A pressing force is applied to the elastic ring by a pressing means provided at the other end of the shaft body, and a pressing force of the pressing means is released by a compressed air supply mechanism provided at a support side end part of the shaft body. In a bobbin gripping device configured to stop the rotation of the shaft body by a brake mechanism provided at a support side end portion of the shaft body, the compressed air supply mechanism includes a compressed air supply piston and the piston as the shaft. It is characterized in that it is constituted by a cylinder that abuts against and separates from an end of a body, and a compressed air supply / discharge pipe connected to the piston and the cylinder, and an electromagnetic switching valve is provided in the compressed air supply / discharge pipe. Bobbin gripping device for winder.