JPH078519Y2 - Bobbin holding device for winder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a holding device for a winding machine that holds a plurality of bobbins at the same time.

(Prior Art) Generally, a synthetic fiber yarn is spun into a plurality of yarns in order to improve productivity, and is wound using a winding machine in which a plurality of bobbins are attached to one bobbin holding device. There is. An example of the bobbin holding device having such a structure is, for example, Jpn.
As disclosed in Japanese Patent Publication No. 65-65, the tightening ring for holding the bobbin used in the apparatus is, for example, Japanese Patent Publication No.
It is described in Japanese Patent Publication No. These tightening rings have a structure in which flat metal plates are fixed to both sides of the elastic ring.

(Problems to be solved by the present invention) In the tightening ring having such a structure, since the deformation volume of the elastic ring and the pressing surface are small, it is necessary to apply a large pressing force and the elastic ring and the metal plate Since the diameters are the same, when the pressing force acts, the elastic ring deforms and grips the shaft body or the bobbin, and the pressing force does not act on the tightening ring after that, and all the bobbins are securely held. There was a problem that I could not do it.

(Purpose) An object of the present invention is to reliably hold a plurality of bobbins with a small pressing force and to easily attach and detach the tightening ring.

(Means for Solving the Problems) In order to achieve the above-mentioned object, a bobbin holding device of a winding machine of the present invention comprises a fixing member integrally formed on a shaft and a movable member mounted on the shaft. Member, and a plurality of tightening rings and spacers arranged between the fixed member and the movable member, and the movable member is pressed toward the fixed member by a pressing means such as a spring or compressed air to form the tightening ring. In a device for simultaneously holding a plurality of bobbins by projecting in a diametrical direction, the tightening ring has a structure in which rigid ring plates are fixed to both sides of an elastic ring, and the fixing surface has a concave shape that covers the elastic ring, The elastic ring is formed so that its inner diameter is larger than the inner diameter of the rigid ring plate and the outer diameter of the elastic ring is smaller than the outer diameter of the rigid ring plate.

(Embodiment) The construction of one embodiment of the bobbin holding device of the winding machine of the present invention will be described with reference to the drawings.

The shaft body 2 is rotatably supported by the machine frame 1 by bearings 3. The shaft body 2 is provided with a pressure air supply hole 2a, and a flange portion 2b for positioning the bobbin and a tightening ring. A collar portion 2c for positioning is provided. Then, on the outer peripheral portion of the shaft body 2, the tightening ring 6a, the spacer 7a, the tightening ring 6b, the spacer 8a, the tightening ring 6c, the spacer 7b, the tightening ring 6d,
Spacer 8b, tightening ring 6e, spacer 7c, tightening ring 6
f, the spacer 8c, the tightening ring 6g, the spacer 7d, and the tightening ring 6h are inserted in this order, and finally the piston 4 is movably attached to the shaft body 2. A spring 5 is mounted between the piston 4 and the shaft body 2 so that the piston 4 is always pressed by the flange portion 2b of the shaft body 2.

The above-mentioned tightening ring 6 is an elastic ring as shown in FIG.
Rigid ring plates 62 are fixed to both sides of 61, the fixing surfaces are formed in an arc shape, the inner diameter of the elastic ring 61 is larger than the inner diameter of the rigid ring plate 62, and the outer diameter of the elastic ring 61 is the rigid ring. It is formed to be smaller than the outer diameter of the plate 62. The elastic ring 61 is made of synthetic rubber, foam or the like in addition to natural rubber. The rigid ring plate 62 is made of metal, hard synthetic resin, or the like.

The fixing surface of the elastic ring 61 and the rigid ring plate 62 described above is the third
It can be shaped as shown. Since the fixing surface is formed in a concave shape so as to cover the elastic ring 61 so that the volume of the elastic ring 61 increases, the deformation volume and the pressing surface become large, and a large holding force can be obtained with a small pressing force. it can. In addition, the inner diameter of the elastic ring 61 is a rigid ring plate.
Since the elastic ring 61 is formed so that it is larger than the inner diameter of 62 and the outer diameter of the elastic ring 61 is smaller than the outer diameter of the rigid ring plate 62, the elastic ring does not come into contact with the shaft body, so that the tightening / removing operation of the tightening ring is easy. At the same time, even if a pressing force acts on the tightening ring, the shaft body 2 or the bobbin 10 is not held immediately. Therefore, the pressing force is transmitted to the collar portion 2c, the supporting side tightening ring 6a is deformed by the pressing force, then the tightening ring 6d, and finally the tightening ring 6h is deformed by the pressing force, and The inner wall surfaces of the bobbins 10a to 10d can be pressed and held.

The present invention can be implemented as described above, but is not limited to the embodiments.

In the embodiment, the fixing member is formed directly on the shaft body as a flange portion, but it is also possible to integrally fix a tightening ring and a flanged cylindrical member into which a spacer can be inserted. Further, the movable member can be formed of an elastic body such as rubber in addition to a spring, or a member that applies pressure such as compressed air.

(Advantages of the Invention) A bobbin holding device for a winder according to the present invention includes a fixed member integrally formed on a shaft, a movable member mounted on the shaft,
It comprises a plurality of tightening rings and spacers arranged between the fixed member and the movable member, and the movable member is pressed toward the fixed member by a pressing means such as a spring or pressurized air to press the tightening ring in the diametrical direction. In the device for overhanging and holding a plurality of bobbins at the same time, the tightening ring has a structure in which rigid ring plates are fixed to both sides of the elastic ring, and the fixing surface is a concave shape covering the elastic ring. Since the inner diameter is larger than the inner diameter of the rigid ring plate and the outer diameter of the elastic ring is smaller than the outer diameter of the rigid ring plate, the deformation volume and the pressing surface are large, and the holding force is large with a small pressing force. You can get the power. Further, since the inner diameter of the elastic ring is larger than the inner diameter of the rigid ring plate and the outer diameter of the elastic ring is smaller than the outer diameter of the rigid ring plate, the elastic ring does not contact the shaft body, and the tightening / removing operation of the tightening ring is easy. At the same time, even if a pressing force acts on the tightening ring, the shaft body 2 or the bobbin 10 is not immediately held, and it is reliably transmitted to the supporting side tightening ring. Therefore, the elastic ring sequentially extends in the diametrical direction from the support side tightening ring, and the plurality of bobbins can be reliably held.

[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. FIG. 2 is a schematic sectional view showing an embodiment of the tightening ring of the present invention. FIG. 3 is a schematic sectional view showing another embodiment of the tightening ring of the present invention. 2: Shaft, 3: Bearing 4: Piston, 5: Spring, 6: Tightening ring, 7,8: Spacer, 61: Elastic ring, 62: Rigid ring plate,

Claims (1)

[Scope of utility model registration request] 1. A fixed member integrally formed on a shaft, a movable member mounted on the shaft, and a plurality of tightening rings and spacers disposed between the fixed member and the movable member. Then, in the device for pressing the movable member to the fixed member side by the pressing means such as the spring or the compressed air to bulge the tightening ring in the diameter direction and holding a plurality of bobbins at the same time, the tightening ring is replaced by an elastic ring. Rigid ring plates are fixed to both sides of the
The bobbin of the winder is characterized in that the inner diameter of the elastic ring is made larger than the inner diameter of the rigid ring plate and the outer diameter of the elastic ring is made smaller than the outer diameter of the rigid ring plate in a concave shape that covers the elastic ring. Holding device.