JPH11240672A - Thread take-up device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a thread take-up device that enlarges the operating range of its bobbin holder and causes little slippage of the holding position of its bobbin. SOLUTION: This thread take-up device comprises : a bobbin holder 2 that includes a shaft 4 arranged for rotation inside a support member 3 projecting from a frame 1 horizontally, a cylindrical member 6 with no bobbin positioning flange attached integrally to the end of the shaft 4 so as to enclose the support member 3, and elastic rings 7-1 to 7-8 fitted on the periphery of the cylindrical member 6; and a bobbin positioning means 13 set by the supported side of the cylindrical member 6. The bobbin positioning means 13 is movable between the bobbin tightening position where it positions a first-inserted bobbin 30-1 to 30-4 (30) at the bobbin tightening place in which the bobbin end face projects backward from the rear end of the cylindrical member 6 at lease at such bobbin insertion, and the bobbin freeing position where it never interferes with the bobbin 30-1 to 30-4 (30) after such bobbin tightening.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a yarn winding device having a bobbin holder for simultaneously tightening a plurality of bobbins, and capable of expanding the operable area of the bobbin holder.

[0002]

2. Description of the Related Art Generally, when a plurality of yarns spun from a spinning device are wound simultaneously on a plurality of bobbins, a machine frame as disclosed in Japanese Patent Application Laid-Open No. Sho 62-196270 can be used. A shaft member rotatably mounted in a support member protruding in a horizontal state, a flange for bobbin positioning, a cylindrical member integrally attached to an end of the shaft, and a cylindrical member. A bobbin holder is constituted by a gripping member and a collar such as an inserted elastic ring and expansion piece, and a piston member movably attached to the tip of the cylindrical member, and a stopper is attached to a piston rod of the cylinder. The provisional bobbin positioning mechanism is installed near the supporting end of the bobbin holder.

In the above-described bobbin holder, the rear end of the cylindrical member projects from the bobbin, so that the eccentricity of the bobbin can be eliminated, and the vibration generated during rotation can be suppressed to a low level. However, there has been a problem that the distance from the mounting position of the cylindrical member to the rear end is long, the weight is heavy, the natural frequency is low, and the dangerous rotation speed of the bobbin holder cannot be increased.

In view of the above, it has been proposed that a cylindrical member in a bobbin holder as described in Japanese Patent No. 2681434 be configured such that an end face of a bobbin inserted first when the bobbin is tightly held projects from a rear end of the cylindrical member. did.

That is, after the end face of the bobbin inserted first is temporarily positioned by a temporary positioning mechanism in which a stopper is attached to an O-ring, a ball plunger or a piston rod of a cylinder, the gripping member is in the process of gripping the bobbin. The bobbin moves in the axial direction.

For this reason, in the case of a temporary positioning mechanism such as an O-ring or a ball plunger, the bobbin moves over the bobbin and moves in the axial direction. Is retracted to a position where it does not interfere with the bobbin, and then the bobbin is gripped.

[0007]

In the latter type of winding device, when the bobbin is gripped by moving in the axial direction when the bobbin is gripped, there is nothing to restrict the movement of the bobbin. There is a problem that the position where the yarn package is gripped varies and the winding position of the yarn package with respect to the bobbin varies.

When a rubber member having a large frictional resistance is used as the gripping member, the variation is relatively small. However, when a plastic member or a metal member having a small frictional resistance is used, the final gripping position of the bobbin varies from 1 to 3 mm. Occurs.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a yarn winding device capable of expanding the operable region of a bobbin holder and causing little displacement of a bobbin gripping position.

[0010]

According to a first aspect of the present invention, there is provided a yarn winding device, comprising: a bobbin positioning means; at least a bobbin inserted first at the time of bobbin insertion; The bobbin is moved to a bobbin tightening position that is positioned at a bobbin tightening portion protruding from a portion and a position that does not interfere with the bobbin after the bobbin is tightened.

Further, in the yarn winding device of the present invention, the bobbin positioning means according to claim 2 can push out the yarn package that has been wound.

[0012]

FIG. 1 is a schematic sectional view showing a first embodiment of the structure of a yarn winding device according to the present invention, in which a bobbin holder 2 is rotatably mounted on a machine frame 1; The bobbin holder 2 is rotatably mounted by a bearing 5 in a support member 3 protruding from the machine frame 1 in a horizontal state, and is integrally mounted on an end of the shaft 4. Cylindrical member 6, an elastic ring 7-1 to 7-8 as a gripping member inserted into the cylindrical member 6, and a collar 8-1 disposed between the elastic rings 7-1 to 7-8. 8-7, and a piston member 9 movably attached to the distal end of the cylindrical member 6.

The above-mentioned shaft body 4 is provided with a hole 4a for supplying compressed air, and compressed air is supplied during a bobbin supply operation or a full bobbin doffing operation. The shaft body 4 may have a configuration in which the divided shaft bodies are integrally connected by a shaft joint or the like.

A hollow portion 6a is formed at the distal end of the cylindrical member 6 so that the piston portion 9a of the piston member 9 can move smoothly, and at the rear end, an elastic ring 7 is formed at the outer peripheral end.
-8, and a hollow portion 6b is formed so as to have a predetermined distance from the support member 3.

The cylindrical member 6 is integrally connected to the shaft body 4 by a taper fitting or a key, and is fastened by a nut.

The elastic rings 7-1 to 7-8, which are gripping members, are formed in a predetermined shape by metal, are formed in a predetermined shape by a plastic member such as polyamide resin, or are formed by a synthetic material such as butadiene rubber. It is possible to use a single rubber or a rubber formed into a predetermined shape with a synthetic rubber and a metal.

The above-described piston member 9 is a piston member 9 that moves in a hollow portion 6b formed on the distal end side of the cylindrical member 6.
a and a pressing portion 9b that moves on the outer peripheral portion on the distal end side of the cylindrical member 6 and presses the elastic ring 7-1. The piston member 9 is moved to the rear end side of the cylindrical member 6 by a compression spring 10 provided in a hollow portion on the front end side of the cylindrical member 6,
A pressing force is applied to the elastic rings 7-1 to 7-8 to protrude in the diametrical direction, and the inner walls of the bobbins 30-1 to 30-4 are pressed against each other to tighten the bobbins 30. Further, when compressed air is supplied to the hole 4a formed in the shaft body 4, the piston member 9 is moved to the distal end side of the cylindrical member 6, and the elastic rings 7-1 to 7-8.
, The tightening of the bobbins 30-1 to 30-4 is released.

The above-described compression spring 10 is positioned by a spring holding member 11 attached to an end of the hollow portion 6a of the cylindrical member 6 by a retaining ring 12.

A bobbin positioning means 13 having a stopper 16 attached to a piston rod 14a of a cylinder 14 is attached to the machine frame 1 by a bracket 15 near the supporting end of the bobbin holder 2 described above.

The cylinder 14 has a pressure control valve,
A compressed air supply pipe 17 having an electromagnetic switching valve is connected. When the compressed air is supplied and the piston rod 14a is protruded, the piston rod 14a moves to the bobbin positioning position (a), and when the piston rod 14a is retracted, the two-dot chain line is drawn. It retreats to the standby position (b) which does not hinder the yarn winding operation indicated by.

When tightening the bobbin to the above-described yarn winding device, first, compressed air is supplied to the hole 4a of the shaft body 4 of the bobbin holder 2 to move the piston member 9 to the distal end side of the cylindrical member 6. The pressing force against the elastic rings 7-1 to 7-8 is removed, and the outer diameters of the elastic rings 7-1 to 7-8 are changed to the bobbins 30-1 to 30.
At the same time, the pressure is supplied to the cylinder 14 of the positioning means 13 to protrude the piston rod 14a to move the stopper 16 to the positioning position (a).

Next, the four bobbins 30-1 to 30-4 are inserted onto the elastic rings 7-1 to 7-8 of the bobbin holder 1.
Then, after the end face of the bobbin 30-4 inserted first contacts the stopper 16, when a bobbin tightening signal is issued by an operation switch (not shown) or the like, the pneumatic circuit (not shown) is switched. Thus, the compressed air with respect to the hole 4a of the shaft body 4 is discharged. Then, the compression spring 10 causes the piston member 9 to move.
Is moved to the rear end side of the cylindrical member 6, and the elastic rings 7-1 to 7
-8 project in the diameter direction, and the bobbins 30-1 to 30-4 are tightly held.

When the tightening operation is completed, the positioning means 13
The compressed air supply path for the cylinder 14 is switched, the piston rod 14a is retracted, and the stopper 16 returns to the standby position (b).

In the above-described bobbin tightening operation, since the stopper 16 of the positioning means 13 is held at the positioning position (a) until the bobbin is tightened and gripped, the elastic rings 7-1 to 7-8 are made of plastic, metal or the like. Even when the bobbin is gripped by a member having a low friction coefficient, there is no deviation in the gripping position of the bobbin, and when there is no problem in the length accuracy of the bobbin, the variation range of the distance from the bobbin end face to the yarn winding position is set to 0. 5m
m.

The gripping position of the bobbin in the above-described bobbin holder 2 can be set so that the end face of the cylindrical member 6 and the end face of the bobbin as shown in FIG. 2 are the same. Also,
The positioning means 13 is moved to the stopper 16 by the bobbin holder 2.
Can be configured to move in the diametrical direction.

The positioning means 13 is connected to a stopper 16
Can be moved to the end of the bobbin holder 2 to push out the full package, so that the bobbin pushing means provided in the conventional winding device can be omitted. Further, it is possible to modify the conventional bobbin pushing means so as to move to the bobbin positioning position, the standby position, and the pushing position of the full package, and if the positioning means 13 and the bobbin pushing means are shared, the configuration is simplified. can do.

When the positioning means 13 is moved to the position where the full package is pushed out, the positioning means 13 is bent in a state parallel to the piston rod of the cylinder 14 so that the stopper 16 can press a predetermined position on the end surface of the bobbin. An auxiliary bar for prevention may be provided so that the stopper 16 moves using the auxiliary bar as a guide member.

The stopper 16 of the positioning means 13
Can be moved to three positions of a temporary positioning position (c), a positioning position (a), and a standby position (b) of the bobbin 30-4 as shown in FIG.

In this case, when inserting the bobbins 30-1 to 30-4, the cylinder 14 is protruded, the stopper 16 is held at the position (c), and a bobbin tightening signal is generated by an operation switch (not shown) or the like. Then, the compressed air circuit (not shown) is switched, and the cylinder 14 moves to the positioning position (a) and stops. In this state, the hole 4 of the shaft 4
When the "compressed air with respect to a" is discharged, the piston member 9 is moved to the rear end side of the cylindrical member 6 by the compression spring 10, and the elastic rings 7-1 to 7-8 protrude in the diametrical direction.
When -1 to 30-4 are tightly held, elastic rings 7-1 to 7-8
Is pushed by the piston member 9 to move in the axial direction, so that the bobbins 30-1 to 30-4 move in the axial direction, and the stopper 1
6 comes into contact with the end face of the bobbin 30-4. In this state, the compressed air supply path for the cylinder 14 of the positioning mechanism 13 is switched, the piston rod 14a is retracted, and the stopper 16 is returned to the standby position (b) where it does not contact the bobbin.

In this way, the bobbin 30-1 to 30-4 are provisionally positioned at the position (c) with the stopper 16 of the bobbin positioning mechanism 13 and then moved to the position (a) before the bobbin gripping operation to move the bobbin 30-30. With a three-position stop configuration that moves to the standby position (b) after positioning and tightening and holding 1 to 30-4, the variation in the bobbin gripping position is eliminated, and the elastic rings 7-1 to 7-8 are simultaneously moved. The bobbin holder can be rotated at a higher speed because it can be extended more uniformly.

In the position (c) where the bobbins 30-1 to 30-4 are provisionally positioned, they are provisionally positioned separately from the stopper 13 of the bobbin positioning mechanism 13 such as an O-ring or a bolt plunger described in Japanese Patent No. 2681434. The mechanism 18 is provided, and the bobbin 30-1 is set in a state where the stopper 16 of the bobbin
The same effect can be obtained by a configuration in which .about.30-4 are tightly held and moved to the standby position after being positioned at the (a) position.

In the yarn winding device of the present invention, a plurality of bobbin holders are rotatably mounted on a turret member instead of the manual type yarn switching and winding device in which the above-described bobbin holder is rotatably mounted on the machine frame. Needless to say, the turret member can be applied to a turret type automatic winding device that is rotatably installed on a machine frame.

[0033]

According to the yarn winding device of the present invention, the bobbin positioning means is provided so that at least the first bobbin inserted at the time of bobbin insertion projects from the rear end of the cylindrical member. Since the configuration is such that the bobbin is moved to a position where the bobbin is tightened and a position where the bobbin does not interfere with the bobbin after the bobbin is tightened, the operable area of the bobbin holder can be expanded, and the bobbin is gripped Almost no displacement can occur.

Further, in the yarn winding device of the present invention, if the bobbin positioning means according to the second aspect is configured to be able to push out the yarn package that has been wound, the bobbin pushing means is installed. There is no need, and the entire winding device can be made compact.

[Brief description of the drawings]

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

FIG. 2 is a schematic sectional view showing a second embodiment of the configuration of the yarn winding device of the present invention.

FIG. 3 is a schematic sectional view showing a third embodiment of the configuration of the yarn winding device of the present invention.

FIG. 4 is a schematic sectional view showing a fourth embodiment of the configuration of the yarn winding device of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Machine frame 2 Bobbin holder 3 Support member 4 Shaft 6 Cylindrical member 7-1, 7-2, 7-3, 7-4, 7-5, 7-6, 7-7, 7-8,
Elastic ring 8-1, 8-2, 8-3, 8-4, 8-5, 8-6, 8-7 Collar 9 Piston member 13 Positioning means 14 Cylinder 16 Stopper 17 Compressed air supply tube 18 Temporary positioning mechanism

Claims (2)

[Claims] A shaft body rotatably mounted in a support member protruding from a machine frame or a turret member in a horizontal state;
A cylindrical member that does not have a bobbin positioning flange and is integrally attached to an end of the shaft so as to cover the support member;
A gripping member mounted on the outer periphery of the cylindrical member, and after sequentially inserting a plurality of bobbins onto the gripping member, the gripping member is diametrically extended to press the inner peripheral surface of the bobbin into pressure contact. A bobbin holder that tightly holds a plurality of bobbins and a bobbin positioning means installed near a support side of the cylindrical member, wherein the bobbin positioning means is first inserted at least when the bobbin is inserted. Wherein the end surface of the bobbin is moved to a bobbin tightening position protruding from the rear end of the cylindrical member, and a position where the bobbin does not interfere with the bobbin after the bobbin is tightened. Winding device. 2. The yarn winding device according to claim 1, wherein the bobbin positioning means is configured to be able to push out the yarn package whose winding has been completed.