JP3156482B2 - Bobbin carrier - Google Patents

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 function of removing slack, which travels with a bobbin inserted in a braider.

[0002]

2. Description of the Related Art As a bobbin carrier having a slack removing function, a bobbin carrier shown in FIG. 5 has already been proposed by the present applicant. The bobbin carrier includes a bobbin support 2 erected on a base 1, a coil spring 3 mounted on the bobbin support 2 and urging the bobbin B in a reverse rotation direction,
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 slidably disposed in a groove 5a of the guide support 5. It comprises a member 6 and a coil spring 7 provided between a position below the guide column 5 and the guide member 6.

[0003] In this bobbin carrier, when the yarn is drawn out as the composition progresses and the bobbin B rotates,
The rotation of the coil spring end hook 4
, 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 at 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 of the coil spring 3 3 is released, the diameter is reduced, and it engages with the bobbin support large-diameter portion 2a again. By repeating such biasing and release, the thread tension is maintained at a substantially constant value with a very small fluctuation. When the bobbin carrier is moved from a position far from the composition point to a close position when the bobbin carrier moves from a position far from the composition point to a position close to the bobbin B, the bobbin B is driven by the urging force of the tension device when driving using a braider that composes a three-dimensional structure. The yarn which rotates in the opposite direction and sags is wound around the bobbin B.

[0004]

In the above-described bobbin carrier, the tension of the yarn is reduced when the coil spring 3 is pulled out.
Of the coil spring 3 minus the bobbin B during slack removal.
Rotation resistance. Accordingly, since the spring force of the coil spring 3 is not so large, when the rotational resistance of the bobbin B is large, the spring force of the coil spring 3 minus the rotational resistance of the bobbin B becomes almost zero, and the slack cannot be removed.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a bobbin carrier capable of removing a slack of a yarn without rotating the bobbin.

[0006]

In order to achieve the above object, a bobbin carrier according to the present invention comprises a bobbin support between two free rollers rotatably supported at the top and bottom of the bobbin support at an interval. Supported movably around,
It is equipped with a slack removal roller that is urged to wind the slack yarn around each free roller. Can be drawn through a roller. Furthermore, a parallel maintaining guide whose base end is fixed to a support member slidably disposed in a groove of the guide column, and a yarn unwound from the bobbin are pulled out via a guide roller supported by the support member. You can also do so.

[0007]

In the bobbin carrier configured as described above, at the time of normal composition, the yarn is drawn out while the slack removing roller is drawn toward the yarn path. In addition, when using a three-dimensional structure of a braider where the difference in the orbital distance from the composition point is remarkable, when moving from a position far from the composition point to a close position, the slack removal roller is used. The yarn that moves away from the yarn path and looms large is wound around each free roller and absorbed.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a bobbin carrier according to the present invention will be described with reference to FIGS. In practice,
The guide column 5 and the brake plate column 19 are arranged close to each other on the base 1, but are separated in FIG. 1 for easy viewing.

The bobbin carrier includes a bobbin support 2 erected on a base 1 and two free rollers 1 rotatably supported above the bobbin support 2 at an interval vertically.
0, 11 and each free roller 1 on the upper part of the bobbin support 2
Slack removing lever 1 rotatably supported between 0 and 11
2, a slack removing roller 13 rotatably supported by the slack removing lever 12, and a spiral spring 14 provided between the bobbin support 2 and the slack removing lever 12.
And a guide support 5 erected on the base 1 and a guide support 5
A guide roller 6 slidably disposed in the groove 5a of
A coil spring 7 having a very low spring force provided between the position below the guide column 5 and the support member 6 'of the guide roller 6, and a parallel fixed at a position below the guide roller 6 in the guide roller support member 6'. Maintenance Guide 1
5 and a tensor 16 fixed to an intermediate portion of the guide post 5
And rollers 17 and 18 rotatably supported on both sides of the movement locus of the slack removing roller 13 above the guide support 5, a brake plate support 19 erected on the base 1, and a brake plate support 19 A brake plate 21 rotatably supported by a support shaft 20 fixed to the
It comprises a spring 22 for urging the brake plate 21 toward the bobbin support 2, and a stopper 24 attached to a pin 23 provided across the slit 2a at the upper end of the bobbin support 2 via a long hole 24a. ing.

The spiral spring 14 is for biasing the slack removing roller 13 so as to be spaced apart from the rollers 17 and 18 in the circumferential direction. The other end is fixed to the slack removing lever 12. Since the number of turns 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 removing the slack can be regarded as substantially constant. Usually, the slack yarn Y can be wound about twice around the free rollers 10 and 11. At that time, the wound yarns do not overlap.

The parallel maintaining guide 15 is effective when the yarn Y to be set is made of easily breakable fiber such as glass fiber or 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. By providing the maintenance guide 15, it is possible to prevent the yarn Y from being pulled obliquely downward from above the bobbin B. It is based on the following principle.

That is, when the yarn Y is pulled 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 '.
A rotational moment acts on. For this reason, resistance to movement is generated between the groove 5a of the guide column 5 and the guide roller support member 6 '. However, the yarn Y is subsequently pulled, and the force acts on the coil spring 7.
The coil spring 7 is extended, and the guide roller supporting member 6 'moves up. Thereby, the bobbin B of the yarn Y
And the leading end position of the parallel maintenance guide 15 are at substantially the same height, the yarn Y is pulled out horizontally, and the above-mentioned moment also disappears. When the pull-out position of the yarn Y on the bobbin B is below the bobbin B, the yarn Y is pulled out obliquely because it is pulled by the coil spring 7 and the guide roller support member 6 'is below. Absent.

The length of the brake plate 21 in the bobbin axis direction is set slightly smaller than the distance between both flanges of the bobbin B. By providing such a brake plate 21, even in a braider having a track on which the bobbin carrier runs upside down, the flange of the bobbin B is blocked by the brake plate 21 to prevent the bobbin B from falling off. Further, even if an excessive tension is applied to the yarn Y in the composition,
The bobbin B is pressed by an appropriate pressing force of the brake plate 21.
Is stopped, and the yarn Y is prevented from being pulled out excessively.

One end of the stopper 24 has a recess 2
On the other hand, a compression spring 26 is embedded in the bobbin column 2 below the retaining stopper 24 through a sphere not shown, facing the slit 2a. The retaining stopper 24 shown in FIGS. 1 and 2 (solid line) has a bobbin mounting posture, and the retaining stopper 24 is pressed by the lower side 26 and is firmly fixed.
When the bobbin is replaced, the stopper 24 is set in the state shown by the dotted line in FIG. be able to. In addition,
Although not clear in the drawing, a concave portion is formed on one side of the retaining stopper 24 so as to engage with a sphere at the upper end of the compression spring 26.

In the bobbin carrier thus configured, the bobbin B is inserted into the bobbin support 2, and after a predetermined threading, the yarn Y is pulled out from the bobbin B, and the composition point above the center of the braider It is guided to and composed,
At the time of normal composition, the yarn Y is drawn out in a state where the slack removing rollers 13 are linearly arranged between the rollers 17 and 18.

When the bobbin carrier of the present invention is used for a three-dimensional structure of a braider having a remarkable difference in the orbital distance from the composition point, the bobbin carrier is moved from a position far from the composition point to a position close to the composition point. When the yarn moves, the yarn tends to sag. At that time, the slack removing roller 13 moves 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, 11, the free rollers 10, 11 do not wear.

[0018]

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

That is, the slack can be removed without rotating the bobbin. Therefore, unlike the conventional bobbin carrier, the slack cannot be removed. Further, a large amount of slack yarn can be absorbed in spite of the compact slack removing portion. Further, in the case where the parallel maintenance guide is provided, the occurrence of fiber breakage can be prevented even when a yarn such as glass fiber or carbon fiber is set.

[Brief description of the drawings]

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

FIG. 2 is a front view in which a part of the bobbin carrier of the present invention is broken.

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 according to the present invention.

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

[Explanation of symbols]

 2 bobbin support 5 guide support 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

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) D04C 3/18

Claims (3)

(57) [Claims] 1. A slack thread is wrapped around each free roller between two free rollers rotatably supported above and below a bobbin support at an interval above and below and rotatably supported around the bobbin support. Bobbin carrier with biased 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 further pulled out via an upper roller. 3. A thread to be unwound from a bobbin via a parallel maintenance guide having a base end fixed to a support member slidably disposed in a groove of a guide post and a guide roller supported by the support member. 3. The bobbin carrier according to claim 1, wherein the strip is drawn out.