JPH07207556A - Bobbin carrier - Google Patents

Abstract

PURPOSE:To obtain a bobbin carrier capable of eliminating the loosening of a yarn without rotating the bobbin. CONSTITUTION:This bobbin carrier is provided with a compensating roller 13 supported between two free rollers 10, 11 rotatably supported at the upper part of a bobbin-supporting rod 2 in a state vertically separated from each other interposing a gap. The compensating roller is supported in a state movable around the bobbin-supporting rod 2 and forced to wind a loosened yarn on each free roller 10, 11. A yarn unwound from a bobbin B is guided to the compensating roller 13 via a tensor 16 and a roller 17 and delivered through a roller 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bobbin carrier having a thread slack removing function, which is used when a bobbin is inserted in a braider and the bobbin travels.

[0002]

2. Description of the Related Art As a bobbin carrier having a thread slack eliminating function, the one shown in FIG. 5 has already been proposed by the present applicant. The bobbin carrier includes a bobbin support 2 erected on the base 1, a coil spring 3 attached to the bobbin support 2 for urging the bobbin B in a reverse rotation direction,
A coil spring end hooking body 4 rotatably fitted in the bobbin support 2, a guide support 5 standing on the base 1, and a guide slidably arranged in a groove 5a of the guide support 5. It comprises a member 6 and a coil spring 7 provided between the guide member 6 and a position below the guide column 5.

In this bobbin carrier, when the yarn is pulled out as the composition advances and the bobbin B rotates,
The rotation of the coil spring end hooking body 4
Then, 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 of the bobbin support column large diameter portion 2a is loosened, the coil spring 3 slips and rotates with the bobbin support column large diameter portion 2a, and the rotation causes the coil spring 3 to rotate. The twisting force of 3 is released, the diameter is reduced, and the bobbin supporting column again engages with the large diameter portion 2a. By repeating such urging and releasing, the yarn tension is maintained at a substantially constant value with very small fluctuations. Further, when the bobbin carrier is operated by using a braider that composes a braid having a three-dimensional structure, the bobbin B is moved by the urging force of the tension device when the bobbin carrier moves from a position far from the composition point to a position near the composition point. The bobbins B are wound around the bobbin B by rotating in the opposite direction.

[0004]

In the above bobbin carrier, when the tension of the yarn is pulled out, the coil spring 3
Spring force plus bobbin B rotation resistance, and when slack is removed, coil spring 3 spring force minus bobbin B
It becomes the rotation resistance of. Therefore, since the spring force of the coil spring 3 is not so large, when the rotation resistance of the bobbin B is large, the spring force of the coil spring 3 minus the rotation resistance of the bobbin B becomes almost zero, and the slack cannot be removed.

An object of the present invention is to enable a bobbin carrier to remove slack in a yarn without rotating the bobbin.

[0006]

In order to achieve the above object, the bobbin carrier of the present invention has a bobbin support between two free rollers which are rotatably supported on the upper part of the bobbin support at vertically spaced intervals. Is supported so that it can move around,
It is equipped with a slack eliminating roller that is biased to wind loose yarn around each free roller, and guides the yarn loosened from the bobbin to the slack eliminating roller via the tensor and the roller, and further upward. It can be pulled out via the roller. Further, a parallel maintenance guide whose base end is fixed to a supporting member slidably arranged in the groove of the guide column and a guide roller supported by the supporting member pull out the yarn released from the bobbin. You can also do so.

[0007]

In the bobbin carrier constructed as described above, the yarn is drawn out in a state where the slack eliminating roller is drawn to the yarn path when the composition is normal. When a composition is used for a three-dimensional structure of a braider whose distance from the composition point is very different in perspective, when the distance from the composition point moves from a position distant to a position closer to the slackening roller, The yarn that moves away from the yarn path and largely sags is wound around each free roller and absorbed.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the bobbin carrier of the present invention will be described with reference to FIGS. In addition, in fact,
Although the guide column 5 and the brake plate column 19 are arranged close to each other on the base 1, they are drawn apart in FIG. 1 for easy viewing.

This bobbin carrier comprises a bobbin support 2 which is erected on a base 1, and two free rollers 1 which are rotatably supported on the upper part of the bobbin support 2 with a vertical space therebetween.
0, 11 and each free roller 1 on the upper part of the bobbin support 2.
A slack eliminating lever 1 rotatably supported between 0 and 11
2, a slack removal roller 13 rotatably supported by the slack removal lever 12, and a spiral spring 14 provided between the bobbin support 2 and the slack removal lever 12.
And the guide column 5 standing on the base 1, and the guide column 5
A guide roller 6 slidably arranged in the groove 5a of
A coil spring 7 having a very weak spring force provided between the lower position of the guide column 5 and the support member 6 ′ of the guide roller 6, and a parallel fixed to the lower position of the guide roller 6 in the guide roller support member 6 ′. Maintenance guide 1
5 and a tenser 16 fixed in the middle of the guide column 5
, Rollers 17 and 18 rotatably supported on both sides of the moving path of the slack eliminating roller 13 on the upper part of the guide column 5, a brake plate column 19 erected on the base 1, and a brake plate column 19 A brake plate 21 rotatably supported by a support shaft 20 fixed to
It is composed of a spring 22 for urging the brake plate 21 toward the bobbin strut 2, and a stopper 24 attached to a pin 23 provided across the slit 2a at the upper end of the bobbin strut 2 through a long hole 24a. ing.

The spiral spring 14 is for urging the slack eliminating roller 13 so as to be spaced apart from the rollers 17 and 18 in the circumferential direction, and one end thereof is fixed to a mounting member 25 fixed to the bobbin support 2. The other end is fixed to the slack eliminating lever 12. Since the number of windings is large and the spring force is very small, the spring force in the process of pulling out the yarn Y and the process of slackening the yarn Y can be regarded as substantially constant. Usually, the loose yarn Y can be wound around the free rollers 10 and 11 about twice. At that time, the wound yarns do not overlap with each other.

The parallel maintaining guide 15 is effective when the yarn Y to be set is made of easily breakable fibers such as glass fiber and carbon fiber. That is, when the yarn Y is drawn obliquely downward from above the bobbin B, ironing occurs between the yarn Y and the yarn layer of the bobbin B, and the fibers constituting the yarn Y are broken, but parallel to each other. By providing the maintenance guide 15, it is possible to avoid pulling the yarn Y obliquely downward from above the bobbin B. It is based on the following principle.

That is, when the yarn Y is pulled out obliquely downward from above the bobbin B, the force acts to bend the tip of the parallel maintaining guide 15 upward, and the guide roller supporting member 6 '.
Rotational moment acts on. Therefore, resistance against movement occurs between the groove 5a of the guide column 5 and the guide roller support member 6 '. However, the yarn Y is subsequently pulled, and its force acts on the coil spring 7.
The coil spring 7 is stretched and the guide roller support member 6'is raised. As a result, bobbin B of yarn Y
The withdrawal position and the tip end position of the parallel maintenance guide 15 at the same height become substantially the same height, the yarn Y is withdrawn horizontally, and the above moment disappears. When the position of drawing the yarn Y on the bobbin B is below the bobbin B, since the guide roller support member 6'is pulled downward by the coil spring 7, the yarn Y is not drawn obliquely. Absent.

The length of the brake plate 21 in the axial direction of the bobbin is set to be slightly smaller than the distance between the collars of the bobbin B. By providing such a brake plate 21, even in a braider having a trajectory in which the bobbin carrier runs upside down, the collar of the bobbin B is blocked by the brake plate 21 and the bobbin B is prevented from falling off. In addition, even if the yarn Y in the composition is applied with excessive tension,
The bobbin B is pressed by an appropriate pressure contact force of the brake plate 21.
The rotation of the yarn Y is braked and the yarn Y is prevented from being pulled out excessively.

At one end of the stopper 24, a recess 2 is formed.
4b is formed. On the other hand, in the bobbin support 2 below the stopper 24, a compression spring 26 is embedded via a sphere (not shown) facing the slit 2a. The stopper stopper 24 shown in FIGS. 1 and 2 (solid line) is in a bobbin mounting posture, and the stopper stopper 24 is pushed by 26 from below to be firmly fixed.
When replacing the bobbin, the stopper stopper 24 is set up in the state shown by the dotted line in FIG. 2, and the sphere at the upper end of the compression spring 26 engages with the recess 24b of the stopper stopper 24, so that the bobbin can be easily replaced. be able to. In addition,
Although not clearly shown in the figure, a recess that engages with the spherical body at the upper end of the compression spring 26 is also formed on one side of the retaining stopper 24.

In the bobbin carrier thus constructed, the bobbin B is inserted into the bobbin strut 2 and threaded therethrough, and then the thread Y is pulled out from the bobbin B, and the composition point is located above the center of the braider. Will be guided and organized,
At the time of normal composition, the yarn Y is pulled out in a state where the slack eliminating rollers 13 are linearly arranged between the rollers 17 and 18.

When the bobbin carrier of the present invention is used for composition in a braider having a three-dimensional structure in which the distance of the orbit from the composition point is significantly different from the perspective, the bobbin carrier is moved from a position far from the composition point to a position close to the composition point. As the yarn moves, the yarn tends to sag greatly, but at that time, the slack eliminating roller 13 is moved away from the rollers 17 and 18 by the spring force of the spiral spring 14, and the slack yarn Y becomes free. It is wound around the rollers 10 and 11 and absorbed. At that time, each free roller 10,
11 is also pulled by the yarn Y and rotates. However, since no slip occurs between the yarn Y and the free rollers 10 and 11, the free rollers 10 and 11 are not worn.

[0018]

Since the present invention is configured as described above, it has the following effects.

That is, the yarn can be slackened without rotating the bobbin. Therefore, unlike the conventional bobbin carrier, the slack can no longer be removed. Further, although the slack eliminating part is compact, a large amount of slack yarn can be absorbed. Further, when the parallel maintenance guide is provided, it is possible to prevent the occurrence of fiber breakage even when setting a yarn such as glass fiber or carbon fiber.

[Brief description of drawings]

FIG. 1 is a perspective view of a bobbin carrier of the present invention.

FIG. 2 is a partially cutaway front view of the bobbin carrier of the present invention.

FIG. 3 is a plan view of the bobbin carrier of the present invention excluding a brake plate portion.

FIG. 4 is a plan view of a brake plate portion of the bobbin carrier of the present invention.

FIG. 5 is a sectional view of a conventional bobbin carrier.

[Explanation of symbols]

 2 bobbin post 5 guide post 5a groove 6 guide roller 6'support member 10 free roller 11 free roller 13 slack removal roller 15 parallel maintenance guide 16 tensor 17 roller 18 roller B bobbin

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[Procedure amendment]

[Submission date] January 10, 1994

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] FIGS. 1 to 4

[Correction method] Change

[Correction content]

[Figure 1]

[Fig. 2]

[Figure 3]

[Figure 4]

Claims (3)

[Claims] 1. A bobbin strut is movably supported around a bobbin strut between two free rollers that are rotatably supported at upper and lower intervals so that a loose thread is wound around each free roller. Bobbin carrier with energized slack removal roller. 2. The bobbin carrier according to claim 1, wherein the yarn unwound from the bobbin is guided to a slack removing roller via a tensor and a roller, and is drawn out via an upper roller. 3. A thread released from a bobbin through a parallel-maintaining guide whose base end is fixed to a supporting member slidably arranged in a groove of a guide column, and a guide roller supported by the supporting member. The bobbin carrier according to claim 1 or 2, wherein the strip is drawn out.