JPH0144533Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a device for holding a bobbin integrally on a rotating bobbin holder in a machine for winding a continuously supplied yarn onto a bobbin.

[Conventional technology]

In winding machines such as take-up devices that wind melt-spun yarn, a plurality of bobbins are inserted in series around the outer periphery of a cylindrical bobbin holder, and each bobbin is rotated by a motor. The threads are wound around the outer periphery of each bobbin by rotating them together.

A bobbin holding device is provided on the outer peripheral surface of the bobbin holder to tightly hold the inserted bobbin on the bobbin holder. Conventionally, this bobbin holding device has a plurality of elastic rings and spacers arranged alternately along the axial direction of the holder on the outer periphery of the bobbin holder body, and compresses the elastic rings from the axial direction via the spacers. By expanding and deforming the bobbin holder body in the radial direction, the outer surface of the bobbin holder main body and the inner surface of the bobbin are pressed against each other, and the bobbin is integrally held on the shaft.

[Problem that the invention attempts to solve]

The force that compresses the elastic rings from the axial direction is propagated from the elastic ring on one side of the bobbin holder (usually from the tip side) to the other side through the spacer, and compressive force is applied to all the elastic rings. Ru.

However, due to the frictional force between the outer periphery of the bobbin holder body and the elastic ring, variations in the rubber of the elastic ring, dust on the bobbin holder body, etc., the above-mentioned compressive force may not be propagated reliably. , the elastic ring located far from the compressive force pressing means (usually on the proximal end side) may not be sufficiently deformed, making the holding of the bobbin unstable, resulting in mechanical troubles or adverse effects on thread quality. Ta.

[Means for solving problems]

In this invention, a pressing deformation force is applied to each bobbin holder.

[Effect]

By applying a pressing deformation force to all the bobbin holders in the same way, each holder deforms in the same way, and as a result, the holding force of each bobbin can be made uniform.

〔Example〕

Fig. 2 shows a bobbin holder to which the present invention is applied, in which a cylindrical bobbin holder main body 1 is attached to a bearing 2.
It is rotatably supported by the frame 3 by. Each bobbin B is integrally held on the bobbin holder body 1 by a bobbin holding device 4 installed on the circumferential surface of the bobbin holder body 1.

FIG. 1 shows an enlarged cross-section of the tip of the bobbin holder. An air supply passage 5 is provided at the axial center of the bobbin holder body 1, and an air chamber 6 communicating with the supply passage 5 is formed at the tip of the body 1. A fixing plate 7 fixed to the interior wall and having a hole in the center and a piston 8 slidable along the interior wall are provided in the air chamber 6, and a shaft 9 between the piston 8 and the fixing plate 7 is provided. A spring 10 is provided. Further, a cap 11 that is slidable in the axial direction along the outer periphery of the bobbin holder main body 1 is fitted into the tip of the bobbin holder main body 1, and the shaft 9 passes through the center hole of the fixing plate 7. Fixed.

Next, the structure of the bobbin holding device 4 will be explained. A fixed stopper 12 is screwed onto the bobbin holder main body 1 at a predetermined interval.
A bobbin holder 13 is inserted into the holder tip side. The fixed position of the fixed stopper 12 is such that the bobbin holder 13 adjacent to the stopper 12 straddles the two bobbins B. The bobbin holder 13
It consists of an elastic rubber ring 14 and a metal ring 15 fixed to the outer periphery of the ring 14. Note that the holding body 13 is not limited to this shape. Furthermore, a slide ring 16 is inserted into the main body 1 on the holder tip side of the bobbin holder 13. A recess 17 is formed on the inner peripheral surface of the slide ring 16.
A slide stopper 18 is installed in the recess 17, and the stopper 18 is screwed onto the main body 1. The stopper 18 divides the recess 17 in the slide ring 16 into two, with a compression spring 19 installed in one recess and an air chamber 20 in the other recess. The above-mentioned fixed stopper 12 and slide ring 16 are installed on both sides of all the bobbin holders 13 except for the bobbin holder 13 at the tip.
is installed. A kit 11 is directly adjacent to the tip side of the bobbin holder 13 at the tip. Also,
An air passage 21 communicating with the air chamber 20 is formed in the bobbin holder main body 1 .

FIG. 1 shows a state in which the bobbin holder 13 holds each bobbin B. That is, the holder 13 at the tip of the bobbin holder is sandwiched between the false cap 11 and the fixed stopper 12 by the cap 11 which is biased toward the right side in the figure by the force of the spring 10, and is elastically deformed in the radial direction by the pressing force. This deforming force holds the bobbin B integrally on the bobbin holder main body 1. The other holder 13 is sandwiched between the slide ring 16 and the fixed stopper 12, which are biased rightward in the figure by the compression spring 19, and is elastically deformed in the radial direction by the pressing force. Therefore, the bobbin B is integrally held on the bobbin holder main body 1. With this bobbin holder holding all the bobbins B, the bobbin holder main body 1 is rotationally driven by a motor (not shown), so that the bobbin B rotates at the same rotational speed as the main body 1, and the thread is wrapped around the bobbin B. wind it up.

When removing bobbin B from the bobbin holder,
Compressed air is supplied into the air supply path 5 from a compressed air source (not shown), and flows into the air chamber 20 via the air chamber 6 and the air path 21. Inside the air chamber 6, the piston 8 is moved to the left in the figure against the force of the spring 10, and the pressing force of the cap 11 against the holder 13 at the tip is released. On the other hand, air chamber 2
0, the compressed air force causes the slide ring 16 to slide to the left in the figure against the force of the spring 19, and the pressing force against the holder 13 is released. In the manner described above, the pressing force on all the holders 13 is released and each bobbin B can be attached and detached.

As described above, in this embodiment, since the air passage 21 is provided in the bobbin holder main body 1, which is a cylindrical rotating body, the air passage 21 does not interfere with the rotation of the main body 1. Furthermore, even when a large number of bobbins B, such as eight, are inserted into the bobbin holder, all the bobbin holders 13 are deformed in the same way and all the bobbins B are held in the bobbin holder with equal force. The winding state between the bobbin B on the proximal end side and the distal end side of the bobbin holder does not change.

In addition, in the above embodiment, one slide ring 1
6 to press one bobbin holder 13, for example, by interposing a slidable spacer between the bobbin holders 13, one slide ring 16 can press two or three holders. 1
3 may be pressed.

Furthermore, since only one type of bobbin holder is used in this embodiment, the positions of the bobbin holders on the bobbin holder are compatible.

[Effect of idea]

As explained above, according to the present invention, sufficient deformation to hold the bobbin can be obtained in all the bobbin holders, and all the bobbins can be held by the bobbin holder with equal force.

[Brief explanation of the drawing]

Figure 1 is a sectional view of the tip of the bobbin holder, Figure 2
The figure is a partial vertical sectional view of the entire bobbin holder. DESCRIPTION OF SYMBOLS 1... Bobbin holder main body, 12... Fixed stopper, 13... Bobbin holder, 16... Slide ring, 21... Air path, B... Bobbin.

Claims (1)

[Scope of utility model registration request] A plurality of bobbin holders are disposed on the outer periphery of the bobbin holder, and a plurality of bobbins are inserted in series on the outer periphery of the holder, and the bobbin holder is press-deformed to press and hold each bobbin from the inside. A bobbin holding device characterized in that a pressing deformation force is applied to each of the bobbin holders.