JPH07258948A - Braider and braiding method - Google Patents

Abstract

PURPOSE:To improve yarn drawing workability and shorten working time by collectively holding a group of yarns drawn from respective bobbin carriers through an assembling auxiliary device. CONSTITUTION:An assembling auxiliary device H is detachably mounted on the mandrel supporting device b6 of a mandrel device Bm, the yarn converging guide h7 of the device H is subjected to positioning control in the proximity of the yarn guide member g2 of a yarn guide G, and yarns Y drawn from the bobbins of respective bobbin carriers C are successively passed through the yarn converging guide h7 and their ends are collectively held by a yarn holding member of the device H. Subsequently, the braider body Bb is driven so as to make the respective bobbin carriers C travel along the orbit and the group of yarns Y collectively held at the device H are temporarily interlaced between the yarn converging guide h7 and the supporting plate of the yarn holding member followed by driving halt temporarily, and the yarn group Y is cut at its converged and interlaced part followed by detaching the device H and then driving the braider body Bb again to start an assembling operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a braider and a braiding method for forming various compositions by assembling a plurality of yarns or fiber bundles (hereinafter simply referred to as "yarns"). It is a thing.

[0002]

2. Description of the Related Art Conventionally, there have been various braiders and braiding methods for forming a composition by interlacing a plurality of yarns around a mandrel having various shapes such as a T-shape, an I-shape and a tetrapot shape. Are known.

[0003]

In the conventional braider and braiding method, prior to the start of the composition, the tips of the many yarns drawn from the bobbin placed on the bobbin carrier are manually Gripped,
After pulling out the yarns from all the bobbins, the ends of the many yarns pulled out from the bobbins are manually bundled with a string or the like, and the bundled yarns are attached to a mandrel, and then the braider is driven to form the composition. Has started. Such work of pulling out the yarns from the bobbin and bundling the ends of a large number of yarns requires a lot of labor and time, which causes deterioration of workability or productivity of the braider. There is. Moreover, with the increase in the size of the braider and the increase in the number of bobbin carriers used, such work is
This is a difficult and time-consuming task.

An object of the present invention is to solve the problems of the conventional braider and braiding method as described above,
An object of the present invention is to provide a braider and a braiding method which are excellent in productivity or workability and can be automated.

[0005]

In order to achieve the above object, the present invention provides a braiding machine with a composition assisting device for collecting and holding yarns drawn from a bobbin mounted on a bobbin carrier. In addition, the composition auxiliary device is detachably attached to a mandrel supporting device, and the composition auxiliary device is constituted by a yarn holding member and a yarn convergence guide. Furthermore,
After the yarns drawn from the bobbin placed on the bobbin carrier are collectively held by the composition assisting device, the braider is driven to cause the bobbin carrier to travel along the track to converge the gathered yarn group. In addition to being entangled, the yarn group at the entangled portion is cut to form a yarn bundle end.

[0006]

EXAMPLES Examples of the present invention will be described below, but the present invention is not limited to these examples without departing from the gist of the present invention.

First, a braider as an example to which the present invention is applied will be outlined with reference to FIG. 1 which is a side view of the braider. In addition, in FIG. 1, a rectangular portion shown by a dotted line on an upper portion of the bobbin carrier C is shown by omitting known yarn guide portions having various structures.

The braider BR is composed of a braider body Bb and a mandrel device Bm. The braider body Bb is a curved surface having a predetermined radius of curvature R, which is arranged in a substantially cylindrical machine base Fb whose axis is horizontal. The upper plate U and the bobbin carrier C running along the track formed in the upper plate U are provided, and the curved upper plate U is a substantially cylindrical machine base Fb.
It is attached to the substantially cylindrical machine frame f1 arranged inside by suitable fixing members f2 and f2 ′ which are arranged at a predetermined interval, and the upper plate U is provided with a known track in the circumferential direction. It is set up.

Y is a yarn that is unwound from the bobbin placed on the bobbin carrier C and heads to the composition point P on the mandrel m supported by the mandrel device Bm, and the yarn y is Frame F of substantially cylindrical machine base Fb
A bobbin carrier C that is unwound from a bobbin carrier C that is arranged substantially horizontally on b ', and passes through a guide roller f3 and a hollow guide f4 attached to a machine base Fb toward a composition point P on a mandrel m or reinforcement. It is a yarn for yarn (hereinafter, simply referred to as a "filament for medium yarn").

As is well known, a gear (not shown) is rotationally driven by an appropriate driving means such as a motor to rotate the impeller, and the gear is fitted in a groove formed in the impeller. The bobbin carrier C is configured to move along the track by moving the engagement shaft of the bobbin carrier C. As described above, the bobbin carrier C is caused to travel along the track formed in the curved upper plate U, so that a large number of yarns Y are interlaced to form the composition on the mandrel m having various shapes. The bobbin carrier C arranged substantially horizontally in the frame Fb ′ of the machine base Fb is rewound from the bobbin carrier C traveling along the track, and is rewound as necessary. The yarn Y to be formed is entangled to form a composition.

The yarn guide device G includes a first yarn guide member g1 and a first yarn guide member g1 attached to a frame g1 'extending in a substantially horizontal direction from an intermediate frame Fb "of a machine base Fb.
The second yarn guide member g2 is attached to the front end of a frame g2 'which is erected on the floor member Fr arranged at a predetermined interval. First yarn guide member g
The first and second yarn guide members g2 separate the yarn Y, which sways along with the lateral movement of the bobbin carrier C, which runs while meandering along the track formed in the upper plate U, at a predetermined interval. The composition point P is maintained at a substantially constant position by being guided by the first yarn guide member g1 and the second yarn guide member g2 which are arranged in a line. By maintaining the yarn at a substantially constant position, a stable composition can be realized without the yarn Y to be composed being entangled in an irregular state in the vicinity of the composition point P. Therefore, the formed composition has a uniform shape. A stable composition can be manufactured.

The mandrel device Bm is a braider body B.
A horizontal movement frame b1 which is arranged on the front surface of b and is horizontally movable toward the substantial center of the upper plate U arranged on the braider body Bb is arranged above the machine base Fm. A rack b2 is provided below the horizontal movement frame b1 in parallel with the horizontal movement frame b1.
Is attached to the rack b2, and a pinion b4 attached to an output shaft of a motor b3 attached to the machine base Fm and capable of rotating in the forward and reverse directions is screwed into the rack b2. Accordingly, the horizontal movement frame b1 is configured to be horizontally moved by driving the pinion b4 by driving the motor b3 capable of rotating in the forward and reverse directions and moving the rack b2 screwed with the pinion b4. There is. The mandrel support device b6 mounted on the moving member b5 is moved by moving the moving member b5 attached to the tip of the horizontal moving frame b1 in a direction substantially perpendicular to the horizontal moving frame b1. It is configured so that the position can be two-dimensionally controlled in combination with the horizontal movement of the horizontal movement frame b1.

Next, prior to the start of composition, the tips of a large number of yarns drawn from the bobbin placed on the bobbin carrier C are gathered and held, and the gathered yarn groups are entangled. Therefore, the composition auxiliary device H will be described with reference to FIG. 2, which is a perspective view of the composition auxiliary device H.

Reference numeral h1 denotes a substrate of the composition assisting device H having a substantially rectangular shape in plan view, and the composition assisting device H is removed on the mandrel supporting device b6 of the mandrel device Bm described above on the bottom surface h1 'of the substrate h1. A predetermined number of permanent magnet disks h2 for freely attaching are attached. Instead of the permanent magnet board h2, an electromagnet capable of generating and erasing a magnetic force by a switch can be used. Further, a C-shaped female member having an upper opening is attached to the upper surface of the mandrel supporting device b6, and a reverse convex male member fitted to the C-shaped female member is attached to the bottom surface h1 ′ of the substrate h1. The C-shaped female mold member attached to the upper surface of the mandrel supporting device b6 and the reverse convex male mold member attached to the bottom surface h1 ′ of the substrate h1 of the composition assisting device H are fitted to each other to assist composition The device H can also be detachably mounted on the mandrel support device b6 of the mandrel device Bm. Of course, without being limited to such fitting means, various fitting means can be used.

Reference numeral h3 denotes a substantially vertical support plate attached to the upper surface h1 "of the substrate h1. On both sides of the support plate h3, the yarn Y drawn from the bobbin mounted on the bobbin carrier C is provided. An appropriate number of thread holding members h4 for sandwiching and holding are attached.The thread holding members h4 shown in Fig. 2 and Fig. 3 have a support plate at one end with an appropriate fastener such as a screw h5. Although the spring plate h6 is attached to the h3, it is possible to attach two tension washers instead of the spring plate h6, and hold and hold the yarn between the tension washers. Alternatively, the coil spring may be attached, and the yarn may be clamped and held between the coils of the coil spring.

Reference numeral h7 is a substantially circular yarn converging guide having a slit h7 'attached near the end of the substrate h1 on the side of the braider body Bb, which is pulled out from the bobbin placed on the bobbin carrier C. Thread Y, slit h7 '
It is configured such that a large number of yarns Y can be converged by passing the yarns through the yarn converging guide h7.

Next, the function and operation of the composition assisting device H will be described with reference to FIG. 3 which is a side view of the braider BR in which the above-mentioned composition assisting device H is placed on the mandrel supporting device b6 of the mandrel device Bm. explain.

First, prior to the start of composition, the composition assisting device H is placed on the mandrel supporting device b6 of the mandrel device Bm, and the yarn converging guide h7 of the composition assisting device H becomes the yarn guide device. G second yarn guide member g2
The position of the mandrel device Bm is controlled so that it is located in the vicinity of.

Then, the yarn Y drawn from the bobbin placed on the bobbin carrier C is passed through the slit h7 'into the yarn converging guide h7, and the end of the yarn Y drawn from the bobbin is composed. It is held by an appropriate yarn holding member h4 attached to the support plate h3 of the auxiliary device H. The operation of pulling out and holding the yarn Y is performed by the braider body Bb.
This is performed for all bobbin carriers C mounted on the track.

After the work of pulling out and holding the yarn Y is completed, the braider body Bb is driven and the bobbin carrier C is caused to travel along the track.
The yarn group Y collected and held by is temporarily composed and entangled between the yarn convergence guide h7 and the support plate h3. In this way, the drive of the braider body Bb is stopped in a state where the yarn groups Y gathered and held by the composition auxiliary device H are entangled. Then, the yarn Y group of the entangled portion is cut at the converged and entangled portion to form a yarn bundle end, but the yarn Y is temporarily composed and entangled.
The group Y does not become disjointed, and the yarn Y forming the yarn bundle end maintains the converged state.

Next, the composition assisting device H placed on the mandrel supporting device b6 of the mandrel device Bm is removed, the mandrel device Bm is appropriately controlled in position, and the mandrel m is attached to the mandrel supporting device b6.
The mandrel m attached to the mandrel supporting device b6 is moved in the composition point P direction to position the yarn bundle end at an appropriate position on the mandrel m, and then the braider body Bb is driven to start composition.

As described above, the composition assisting device H mounted on the mandrel supporting device b6 of the mandrel device Bm holds the yarn Y drawn from the bobbin mounted on the bobbin carrier C. I made a thread Y
The workability of pulling out the yarn Y is improved, the time for pulling out the yarn Y is shortened, and the work efficiency is improved.

The composition assisting device H placed on the mandrel supporting device b6 of the mandrel device Bm gathers and holds the yarns Y drawn from the bobbin placed on the bobbin carrier C, and then the braider body Bb is held. By driving the bobbin carrier C to run along the track,
Since the collected yarn Y groups are entangled, and the entangled yarn Y groups are cut at the converging and entangled portions to form the yarn bundle ends, the yarns forming the yarn bundle ends. The yarn bundle ends can be arranged near the composition point P without the yarn Y becoming disjointed. Therefore, the mandrel m is arranged near the end of the yarn bundle located near the composition point P, and the braider body B
The composition can be started by driving b to drive the bobbin carrier C along the track, and automation of the braider BR can be achieved.

[0024]

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

Since the composition assisting device is configured to hold the yarn drawn from the bobbin placed on the bobbin carrier, the workability of the yarn drawing operation is improved and the yarn drawing work time is improved. The work efficiency is improved while being shortened.

After the yarns drawn from the bobbin placed on the bobbin carrier are gathered and held by the composition assisting device, the braider body is driven to run the bobbin carrier along the track to gather the yarns. Since the yarn group is entangled and the yarn group of the entangled portion is cut to form the yarn bundle end, the yarns constituting the yarn bundle end are not separated, and therefore the mandrel is used as the yarn bundle. After placement near the end of the bundle, composition can be initiated by driving the braider body to drive the bobbin carrier along the track and automation of the braider can be achieved.

[Brief description of drawings]

FIG. 1 is a side view of a braider as an example to which the present invention is applied.

FIG. 2 is a perspective view of a composition auxiliary device.

FIG. 3 is a side view of a braider in which a composition assisting device is placed on a mandrel supporting device of a mandrel device.

[Explanation of symbols]

 BR: Braider Bb: Braider body Bm: Mandrel device C: Bobbin carrier G:・ ・ ・ ・ ・ ・ Thread guide member H ・ ・ ・ ・ ・ ・ ・ ・ Composition assisting device U ・ ・ ・ ・ ・ ・ ・ ・ Upper plate

Claims (4)

[Claims] 1. A braider comprising a composition auxiliary device for collecting and holding yarns drawn from a bobbin placed on a bobbin carrier. 2. The braider according to claim 1, wherein the composition auxiliary device is detachably attached to the mandrel supporting device. 3. The braider according to claim 1, wherein the composition assisting device comprises a yarn holding member and a yarn convergence guide. 4. The gathered yarns are prepared by collecting and holding the yarns drawn from the bobbin placed on the bobbin carrier by a composition assisting device, and then driving a braider to cause the bobbin carrier to travel along a track. A braiding method comprising converging and intertwining a yarn group, and cutting the yarn group in the entangled portion to form a yarn bundle end.