JP2547199Y2 - Braiding machine weight - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weight that runs with a bobbin inserted in a braiding machine.

[0002]

2. Description of the Related Art As a weight of a conventional braiding machine, as shown in FIG. 2, a thread tension is adjusted by a weight 11 slidably arranged on a support post 10, and as shown in FIG. A device that adjusts the thread tension by a coil spring disposed between a slide plate 12 provided with a spring 13 and a spring retainer 14 is widely known.

[0003]

As shown in FIG. 4, for example, when the thread Y is pulled out from the vicinity of the upper end of the bobbin B, the thread Y is wound around the bobbin B as shown in FIG. The thread is caught and bitten by the portion A, and the thread pull-out resistance (tension) is significantly increased. Therefore, in the weight shown in FIG. 2, the weight 11 is in the weight shown in FIG.
The sliding plate 12 jumps up unnaturally, and the yarn Y cannot be supplied in a stable state.

An object of the present invention is to make it possible to always draw out a thread from a weight of a braiding machine in a stable state.

[0005]

In order to achieve the above object, the weight of the braiding machine according to the present invention is controlled by a method of winding the yarn when the yarn is loosened.
A coil spring for urging the bobbin countercurrent, disposed slidably in the longitudinal direction of the bobbin is obtained by a thread guide member which is biased toward the one end of the bobbin.

[0006]

[ Operation ] If the thread pulled out of the bobbin becomes loose, the coil
The force in the yarn winding direction is acting on the bobbin by pulling.
Therefore, the slack of the yarn is absorbed. In other words, for slack yarn
The guide member is prevented from lowering due to
Thread is kept substantially horizontal. Therefore, even when the yarn is pulled out from below the bobbin , the yarn does not greatly incline from the horizontal state, and is smoothly drawn out without biting into the yarn on the bobbin surface layer. Yarn even when drawn from above the bobbin, moving the guide member to close the drawer position above,
The yarn extends substantially horizontally and is smoothly pulled out without biting into the yarn on the bobbin surface layer.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring first to FIG. 5, an example of a braiding machine employing a weight of the present invention will be described.

This braiding machine is used for manufacturing a three-dimensionally structured braid such as a tubular braid having an I-shaped cross section or a tubular braid that is branched at an acute angle and is integrated with each other at the branch point. It is suitable, and the surface of the disk D is spherically concave. Also in this braiding machine, similarly to a general braiding machine, a plurality of sets of weights C are cross-traveled counterclockwise or clockwise along a track (not shown) formed on the disk D to perform composition. The yarn Y fed from each bobbin B attached to each of the weights C is guided to the voice V and becomes a braid A. The weight C is fed with its legs engaged with the holes of the drive gear G present below the disk D.
Is a spherical one, so that a bevel gear is used as the drive gear G. R is a roller for picking up the braid A.

Next, with reference to FIG. 1, a description will be given of the spindle of the present invention.

This weight is generally wound around a bobbin support 2 erected on a base 1 in a direction opposite to the rotation direction of the bobbin B.
A coil spring 3 attached to the bobbin support 2, a coil spring end hook 4 rotatably fitted to the bobbin support 2, a guide support 5 erected on the base 1, and a guide support 5 Guide member 6 slidably disposed in groove 5a
And a relatively weak coil spring 7 provided between the guide member 5 and the lower position of the guide column 5.

Above the bobbin support 2 is a large diameter portion 2a. On the other hand, the inner diameter of the coil spring 3 is slightly smaller than the outer diameter of the bobbin support large-diameter portion 2a. The upper portion of the coil spring 3 is twisted to increase the inner diameter, and is attached to the bobbin support large-diameter portion 2a. When the torsion is released, the coil spring 3 tightens the bobbin support large-diameter portion 2a,
Engage as if hugging. A cap 9 for preventing the bobbin B from jumping out is screwed to the upper end of the bobbin support 2.

On the upper surface of the coil spring end hook 4,
The lower end of the coil spring 3 is inserted and fixed, and a plurality of pins 8 project radially from the peripheral surface of the coil spring end hook 4. This pin 8 engages with a groove Ba at the lower end of the bobbin B inserted into the bobbin support 2,
The coil spring end hooking body 4 follows the rotation of the bobbin B due to the withdrawal of the yarn Y.

A guide roller 6a is rotatably mounted on the guide member 6, and the yarn Y wound around the bobbin B passes through the guide roller 6a and a guide hole 5b formed at the upper end of the guide column 5. After being unwound. And
Normally, the guide member 6 is located at a substantially middle point between the center and the lower end of the bobbin B in the middle direction by being pulled by the weak coil spring 7.

In the tension device configured as described above,
After the bobbin B is inserted into the bobbin support 2 and a predetermined threading is performed, the yarn Y is pulled out from the bobbin B and guided to a composition point (voice V in FIG. 5) located above the center of the braiding machine (1 to 1). During this time, the bobbin B rotates, and the rotation is transmitted to the coil spring end hook 4 by the pin 8, and the coil spring 3 is twisted and its diameter increases. When the diameter of the coil spring 3 is increased to a certain value or more, the engagement in the large diameter portion 2a of the bobbin support is loosened, and the coil spring 3 slips and rotates between the large diameter portion 2a of the bobbin support, and the rotation causes the coil spring 3 to rotate. 3 is released, the diameter is reduced, and it engages with the bobbin support large-diameter portion 2a again. During this time, the thread tension rises linearly until the coil spring 3 slips between the coil spring 3 and the large-diameter portion 2a of the bobbin, and then repeats a very small change each time slipping and engaging are repeated. Therefore, after the yarn Y is set, the composition is made under a yarn tension that fluctuates very little and can be regarded as almost constant.

When a three-dimensional braid manufacturing apparatus having a remarkable difference in the orbital distance from the composition point is operated by using a weight provided with the tension device of the present invention, the distance from the composition point is reduced. When the weight is moved from a distant position to a near position, the yarn tends to loosen greatly, but the bobbin B rotates in the opposite direction while releasing the torsional force accumulated in the coil spring 3,
The yarn is wound on bobbin B.

Further, when the yarn Y is pulled out from below the bobbin B toward the guide member 6, the yarn Y does not greatly incline from the horizontal state, so that the yarn Y is smoothly drawn out without biting into the yarn on the bobbin B surface layer. It is. Thread Y is bobbin B
When pulled out from above, since the coil spring 3 is relatively weak, the guide member 6 moves to near the upper pull-out position, the yarn Y extends substantially horizontally, and smoothly without biting into the yarn on the surface layer of the bobbin B. Be withdrawn.

[0017]

[Effects of the Invention] The present invention is configured as described above, and has the following effects.

That is, when the yarn is loosened, the bobbin is moved in the yarn winding direction.
A biasing coil spring is provided.
The thread to be drawn out can be kept substantially horizontal, and even when the thread is pulled out from any position on the bobbin, the tension state of the thread is always stable, and a uniform braid can be manufactured. In addition, it is possible to prevent damage caused by the yarn getting over.

[Brief description of the drawings]

FIG. 1 is a partial sectional view of a weight set equipped with the tension device of the present invention.

FIG. 2 is a front view of a weight set equipped with a conventional tension device.

FIG. 3 is a front view of a spindle having another conventional tension device.

FIG. 4 is a front view for explaining that a yarn pulled out from a bobbin bites into a yarn on a bobbin surface layer.

FIG. 5 is a front view showing an example of a braiding machine in which the weight of the present invention is adopted.

[Explanation of symbols]

 Reference Signs List 1 base 2 bobbin support 2a large diameter portion 3 coil spring 4 coil spring end hook 5 guide support 6 guide member 7 coil spring 8 pin B bobbin

Claims (1)

(57) [Scope of request for utility model registration] 1. A bobbin is urged in a yarn winding direction when a yarn is slackened.
And a thread guide member slidably arranged in the longitudinal direction of the bobbin and urged toward one end of the bobbin.