JPH08259109A - String winding machine - Google Patents

Abstract

PURPOSE: To provide a string winding machine, which can prevent the generation of unbalance of a driving shaft even in the case where the driving shaft is extended. CONSTITUTION: In a strung winding machine, plural elastic rings 3 and cylindrical spacers 4, which are fitted to a rotary cylinder 2, are energized in the axial direction by a cover member 5, and the elastic rings 3 are expanded in the radial direction by the energization so as to hold a bobbin 13, and the cover member 5 is operated in the energizing direction and the opposite direction by a compressed air cylinder provided inside of the rotary cylinder 2 so as to release the holding of the bobbin 13. In this string winding machine, the cover member 5 is provided with a compressed air supplying passage communicating with the compressed air cylinder 2s from outside of the cover member 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a yarn winding machine, and more particularly to a yarn winding machine which prevents imbalance in the drive shaft of a bobbin holder even if the drive shaft is elongated.

[0002]

2. Description of the Related Art A bobbin re-hoder for a yarn winding machine generally has a mechanism as shown in FIG. 4 (Japanese Patent Laid-Open No. 53-6647).
(See Japanese Patent Publication No. 55-8424). That is, the bobbin holder 1 shown in FIG. 4 supports the drive shaft 8 driven by the motor 11 on the frame 12, and the drive shaft 8 is
The rotary cylinder 2 is connected to the rotary cylinder 2, a plurality of elastic rings 3 and the cylindrical spacer 4 are alternately inserted on the rotary cylinder 2, and the elastic ring 3 and the cylindrical spacer 4 are urged by a disc spring 6 to form a lid member. 5 is configured to compress in the axial direction.
Due to this compression, the elastic ring 3 expands in the radial direction, and the bobbin 13 inserted thereon is gripped and fixed.

Further, the lid member 5 is slidable in the compressed air cylinder 2s via the piston portion 5a, and compressed air is provided in the compressed air cylinder 2s through a shaft hole 8b provided in the shaft core of the drive shaft 8. It is being supplied. Pneumatic cylinder 2
When compressed air is supplied to s, the lid member 5 moves to the left in the figure against the elastic force of the disc spring 6, and the compressive force on the elastic ring 3 is released. By releasing this compressive force, the elastic ring 3 contracts and the bobbin 13 is released.

However, as described above, the shaft hole 8 is formed in the drive shaft 8.
In the structure in which b is provided, the rotation of the drive shaft 8 becomes unbalanced unless the axes are processed so as to coincide with each other. However, it is very difficult to make the shaft hole 8b concentric in terms of machining, and the longer the drive shaft 8 becomes, the more difficult it becomes, and the eccentricity unbalances the rotation characteristics and the winding characteristics of the drive shaft. Will be done. As a measure for preventing the imbalance of the drive shaft, it is necessary to increase the machining accuracy of the shaft hole, but it is inevitable that the manufacturing cost increases as the machining accuracy increases.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a yarn winding machine that does not cause the above-mentioned drive shaft unbalance problem even when the drive shaft is lengthened.

[0006]

According to the present invention for achieving the above object, a plurality of elastic rings and a cylindrical spacer are fitted to a rotary cylinder connected to a drive shaft and slidable on the outer end of the rotary cylinder. The elastic ring and the cylindrical spacer are axially urged by a lid member attached to the elastic member, the elastic ring is radially expanded by the urging, and the bobbin inserted on the elastic ring is gripped, and In a yarn winding machine that releases the grip of the bobbin by operating the lid member in a direction opposite to the urging direction by a compressed air cylinder provided inside the rotating cylinder, It is characterized in that a compressed air supply path communicating with the compressed air cylinder is provided.

According to another aspect of the present invention, a plurality of elastic rings and a cylindrical spacer are fitted to a rotary cylinder connected to a drive shaft, and the elastic member is slidably attached to the outer end of the rotary cylinder. In the yarn winding machine, wherein the ring and the cylindrical spacer are axially urged, the elastic ring is radially expanded by the urging, and the bobbin inserted on the elastic ring is gripped, the lid An engaging portion is provided on the outer side surface of the member, and the pulling means can be connected to the engaging portion.

As described above, according to the present invention, the lid member is provided with the compressed air supply passage penetrating from the outside to the compressed air cylinder, or the outside portion of the lid member is provided with the engaging portion for pulling the pulling means. It is possible to drive the lid member that releases the fixation of the bobbin without providing a shaft hole in the drive shaft. Therefore, imbalance of the drive shaft due to the shaft hole can be prevented.

Further, since the drive shaft is not provided with the shaft hole, the critical speed of the drive shaft can be increased, and thereby the yarn winding speed can be improved, so that the yarn winding machine with high productivity can be obtained. be able to. Further, since the precision machining of the shaft hole is unnecessary, the machining cost can be reduced.

[0010]

The present invention will be described in detail below with reference to the embodiments shown in the drawings. FIG. 1 is a schematic sectional view showing a yarn winding machine according to the present invention. The drive shaft 8 is supported by a frame 12 via a bearing 10 in a cantilever manner, and is rotationally driven by a motor 11. The rotary cylinder 2 is connected to the drive shaft 8, and a plurality of elastic rings 3 and cylindrical spacers 4 are alternately inserted on the rotary cylinder 2 to form the bobbin holder 1.

A compressed air cylinder 2a is provided inside the rotary cylinder 2, and a lid member 5 is slidably provided on the compressed air cylinder 2a via a piston portion 5a. The lid member 5 has its outer peripheral edge portion 5b brought into contact with the ends of the plurality of elastic rings 3 and the cylindrical spacer 4, and is urged in the axial direction by the elastic force of the disc spring 6. Due to this bias compression, the elastic ring 3 expands in the radial direction, and the outer peripheral surface of the rotating cylinder 2 and the bobbin 13
The inner peripheral surface of the bobbin 13 is in close contact with the inner peripheral surface of the bobbin 13 and the bobbin 13 is concentrically gripped with respect to the rotary cylinder 2.

Further, the lid member 5 is provided with a compressed air supply passage 5c which communicates with the compressed air cylinder 2a from the outside, and when compressed air is supplied to the compressed air cylinder 2a through this compressed air supply passage 5c, the lid member 5 Moves against the elastic force of the disc spring 6 and moves to the left in the figure, so that the compressive force on the elastic ring 3 is released. By releasing this compression force, the elastic ring 3
Contracts in the radial direction, and the bobbin 13 is released from being fixed.

On the other hand, a bobbin doffer 20 is arranged at the end of the bobbin holder 1. The bobbin doffer 20 can be moved back and forth and left and right by a carriage 17 having a manual or self-propelled function, and the frame 1 is mounted on the carriage 17.
6 is fixed, and the bobbin receiving arm 14 is attached to the frame 16.
Is configured to support. A compressed air supply pipe 15 is axially movably attached to the bobbin receiving arm 14 so that its tip portion 15a can be connected to the compressed air supply passage 5c of the lid member 5 on the bobbin holder 1 side. There is.

Therefore, the tip portion 15 of the compressed air supply pipe 15 is
When a is connected to the compressed air supply passage 5c and compressed air is supplied to the compressed cylinder 2a from a compressed air source (not shown), the compressed air overcomes the elastic force of the disc spring 6 to move the lid member 5 to the left in the figure, The holding and fixing of the bobbin 13 by the elastic ring 3 is released. Further, since the frame 16 moves integrally with the movement of the lid member 5 in the left direction in the drawing, the sensors 19 and 21 detect this, and the compression force of all the elastic rings 3 is released. To detect that
The signal is output from the controller 22 to the pusher 18 on the frame 12. With this drive signal, the pusher 1
8 is to move the pusher arm 18a to the left in the figure,
The bobbin 13 is pushed out onto the bobbin receiving arm 14 and pulled out from the bobbin holder 1.

Here, the relationship between the elastic force of the disc spring 6, the aerodynamic force that overcomes the elastic force, and the force by which the doffer 20 pushes the lid member 5 is expressed by the equation: aerodynamic force> doffer pressing force> disc spring It becomes the relation of elastic force. On the contrary, when the bobbin 13 is gripped by the bobbin holder 1, if the doffer 20 is separated from the lid member 5, the elastic force of the disc spring 6 is applied to the elastic ring 3, so that the elastic ring 3 expands to grip the bobbin 13. It can be fixed.

As described above, in the yarn winding machine of the present invention,
The compressed air supply path 5c for supplying compressed air to the compressed air cylinder 2a is provided so as to penetrate through the inside and outside of the lid member 5 and is not provided at the shaft center of the drive shaft 8. Even if the length is increased, the imbalance due to the eccentricity of the shaft hole does not occur. In addition, this can increase the critical speed of the drive shaft and increase productivity by high-speed winding.

The yarn winding machine shown in FIGS. 2 and 3 shows another embodiment of the present invention. In this embodiment, the lid member 5 is driven in the axial direction without using the compressed air cylinder 2a. The cylinder 2a 'provided in the rotary cylinder 2 is provided only as a means for guiding the piston portion 5a of the lid member 5, and an annular engaging portion 5d is provided on the outer side portion of the lid member 5. On the other hand, an engagement chuck 14a is provided on the side of the doffer 20 on the bobbin receiving arm 14, and the engagement chuck 14a is engaged with and disengaged from the engagement portion 5d on the lid member 5 side.

That is, the engagement chuck 14a is provided at the end of the bobbin receiving arm 14 so as to be movable in the radial direction. With the engagement chuck 14a retracted inward in the radial direction, the doffer 20 is brought close to the outer end of the bobbin holder 1, and then the engagement chuck 14a is moved outward in the radial direction to engage the lid member 5 side. Hook part 5d.
Next, when the doffer 20 is moved to the left, the lid member 5 is pulled and moves to the left in the figure, so that the compressive force of the elastic ring 3 is released and the bobbin 13 is held and fixed.

Also in the case of this embodiment, since the drive shaft 8 is not provided with the shaft hole as in the above-mentioned embodiment, the imbalance due to the eccentricity of the shaft hole does not occur. Further, since the critical speed of the drive shaft 8 can be increased by this, the productivity can be increased by the high speed winding. In each of the above embodiments, the spindle tribe type yarn winding machine in which the bobbin holder is directly driven by the motor has been described.However, the present invention does not provide the bobbin holder with the motor, and the bobbin is rubbed by the touch roller. It can also be applied to a friction drive type yarn winding machine driven.

Further, according to the present invention, one bobbin winding machine is provided with two bobbin holders at a winding position and a standby position, and the turret type automatic winding machine performs winding while alternating these two bobbin holders. It can also be applied to a yarn winding machine.

[0021]

As described above, the yarn winding machine of the present invention is
Since the lid member at the end of the bobbin holder is driven without providing a shaft hole in the drive shaft, an imbalance due to the eccentricity of the shaft hole does not occur even if the drive shaft is elongated. Further, since the critical speed of the drive shaft can be increased by this, the yarn winding machine with high winding speed and high productivity can be obtained.

[Brief description of drawings]

FIG. 1 is a schematic sectional view of a yarn winding machine according to an embodiment of the present invention.

FIG. 2 is a schematic sectional view showing a main part of a yarn winding machine according to another embodiment of the present invention.

FIG. 3 is a view as viewed in the direction of arrows AA in FIG. 2;

FIG. 4 is a schematic sectional view of a conventional yarn winding machine.

[Explanation of symbols]

 1 Bobbin Holder 2 Rotating Cylinder 2s Compressed Air Cylinder 3 Elastic Ring 4 Cylindrical Spacer 5 Lid Member 5a Piston Part 5c Compressed Air Supply Passage 5d Engaging Part 6 Disc Spring 8 Drive Shaft 13 Bobbin 14 Bobbin Receiving Arm 14a Engaging Chuck 20 Doffer

Claims (4)

[Claims] 1. A plurality of elastic rings and a cylindrical spacer are fitted to a rotary cylinder connected to a drive shaft, and the elastic ring and the cylindrical spacer are attached by a lid member slidably attached to the outer end of the rotary cylinder. Is urged in the axial direction, the elastic ring is expanded in the radial direction by the urging so as to grip a bobbin inserted on the elastic ring, and the lid member is provided by a compressed air cylinder provided inside the rotary cylinder. In the yarn winding machine for releasing the gripping of the bobbin by operating in the direction opposite to the urging direction, the yarn in which a compressed air supply path communicating with the compressed air cylinder from the outside of the cover member is provided in the cover member. Winder. 2. A bobbin doffer is movably disposed near the outer end of the rotary cylinder, and a bobbin receiving arm of the bobbin doffer is provided with a compressed air supply passage connectable to an inlet of the compressed air supply passage of the lid member. The yarn winding machine described in. 3. A plurality of elastic rings and a cylindrical spacer are fitted to a rotating cylinder connected to a drive shaft, and the elastic ring and the cylindrical spacer are attached by a lid member slidably attached to the outer end of the rotating cylinder. In a yarn winding machine adapted to axially urge the elastic ring to expand in the radial direction by the urging and to grip a bobbin inserted on the elastic ring, the yarn winding machine engages with the outer surface of the lid member. A yarn winding machine having a joint portion and a pulling means connectable to the engaging portion. 4. A movable bobbin doffer is arranged in the vicinity of an outer end of the rotary cylinder, and an engaging means connectable to an engaging part of the lid member is provided at an end of a bobbin receiving arm provided on the bobbin doffer. The yarn winding machine according to claim 3.