JP2553470Y2 - Weft receiving conveyor of rapier loom - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to a rapier loom which receives a weft drawn from a weft supply source arranged at one end of a machine by a weft insertion carrier at the center of a warp group, and receives the other at the other end of the machine. The present invention relates to a weft receiving / transporting element to be transferred to the other end.

[0002]

2. Description of the Related Art The function of a weft receiving / transporting element in a rapier loom is to receive a weft from a weft inserting / transporting element at the center of a warp group, and to release the gripped weft after transferring it to the machine end. Conventionally, as this weft receiving carrier, FIG.
(A) As shown in the main part of the rapier head, a fixed piece 1 having a bent hook-like portion 1a at its tip, and a coil spring (not shown) compressed with respect to this fixed piece 1
And a fastening piece 2 resiliently moved in the longitudinal direction by the inner wall 1b of the hook-like portion 1a of the fixed piece 1 and the fastening piece 2
A wedge-shaped opening S is formed between the head 2a and the outer wall 2b of the head 2a,
A device in which the weft Y is gripped by the opening S has been proposed (for example, Japanese Patent Publication No. Sho 62-35500). In this weft receiving and transporting device, when releasing the weft at the machine end, the head 2a of the tightening piece 2 is moved in the longitudinal direction to the left by a distance of L1, for example, as shown in FIG. The weft Y held by releasing the gap t2 at the opening is released.

[0003]

However, in the above-mentioned Japanese Patent Publication No. 62-35500, the weft receiving carrier described above, after the weft is received from the insertion carrier at the center of the machine, the weft is transferred to the machine end. To secure the grip, the inner wall 1b of the hook-like portion 1a of the fixing piece 1 and the outer wall 2b of the head 2a of the fastening piece 2
It is necessary to narrow the gap of the wedge-shaped opening S between the inner wall 1b and the inner wall 1b of the hook-like portion 1a at the tip of the fixed piece 1 and the inner wall 1c of the parallel portion. Must be reduced. However, this angle θ1
When the weft is taken small, when releasing the weft at the machine end, it is necessary to open the gap S between the weft gripping surface of the fastening piece and the hook-shaped weft gripping surface of the fixing piece according to the thickness of the weft. As the thickness of the weft increases, the longitudinal movement length L1 of the tightening piece must be increased.

However, when the weft is released at the machine end when the moving distance L1 in the longitudinal direction of the tightening piece 2 is long as described above,
Depending on the thickness of the thread, the timing of releasing the thread may be delayed,
Variations are likely to occur, and as a result, the weft receiving / transporting unit is transporting the weft while feeding it from the weft supply source, so the released wefts are not uniform in length. There is a problem that the machine stand must be stopped because the length of the weft drawn from the machine becomes long.

Therefore, the present invention is intended to solve these problems, and it is an object of the present invention to reliably receive a weft from an insertion carrier regardless of the thickness and type of the weft and to set the machine end. When the weft is released and the weft is released, the weft is released at almost the same point.

[0006]

The weft is gripped between the inner wall of the hook at the tip of the fixed piece of the rapier head and the outer wall of the head of the fastening piece which resiliently presses against the inner wall of the hook. A receiving carrier for a rapier loom having a wedge-shaped opening, wherein a body connected to a head of a fastening piece has a center of a radius of curvature in a plane perpendicular to a longitudinal direction of the body. And formed into a curved shape. On the other hand, a guide surface which comes into contact with the outer wall of the head of the fastening piece is provided on the inner wall of the hook-shaped part of the fixing piece. The guide surface is formed in an arc shape or inclined so that the head of the fastening piece can be turned.

[0007]

When the receiving carrier receives a weft from the insertion side carrier at the center of the machine base, the inner wall of the hook at the tip of the fixed piece of the rapier head and the clamp that presses against the inner wall of the hook resiliently. Since a wedge-shaped opening is formed between the attachment piece and the outer wall of the head, the weft is gripped by the wedge-shaped opening. Next, after the weft is transferred to the machine end while holding the weft, when releasing the held weft, first, when an opener (not shown) rotates the release lever, the pin engaged with one end of the release lever moves. I do.

[0008] Since the pin is integrally attached to the end of the body of the fastening piece, the fastening piece moves accordingly.
However, since the body portion of the fastening piece is formed to be curved in the longitudinal direction, the curved portion of the body portion comes into contact with the fixed piece and turns, and accordingly, the end of the fastening piece becomes the fixed piece. Swing along a guide surface provided on the inner wall of the hook-shaped portion. With the rotation of the head of the fastening piece, the wedge-shaped opening becomes large without having to move so much in the longitudinal direction, so that the weft can be sufficiently released, so that there is little variation in the weft release timing. Does not occur.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings, an example of an apparatus for carrying out the present invention will be described in detail. Referring to FIGS. 1 and 2, a main part of a weft receiving carrier of a rapier loom according to the present invention has a tip 21 serving as a rapier head. A fixing piece 20 having a bent hook-shaped part 22; and a fastening piece 30 whose head 31 is elastically pressed against the hook-shaped part 22 of the fixed piece 20 from the longitudinal direction by a compressed coil spring 37. The fixing piece 20 is fixed to the distal end of the flexible band 10 by a bolt 11, while the fastening piece 30 is mounted so as to be fitted into a recess formed in the middle of the fixing piece 20. It is configured.

That is, the front end 21 of the fixing piece 20 is formed as a bent hook-shaped part 22, and the intermediate part 23 connected to the hook-shaped part 22 is formed by sliding the fastening piece 30 in the longitudinal direction. A concave groove is formed so as to be movable, and a rear end portion 24 connected to the intermediate portion 23 is provided with a flexible band 1.
It is fixed to a reinforcing member 12 fixed to 0 by bolts 11. As shown in FIGS. 3 and 6, a guide surface 22a that comes into contact with the outer shape of the head of the fastening piece 30 is provided on the inner wall of the hook-shaped portion 22 of the fixing piece 20. The shape of the guide surface 22a is formed in an arc shape or inclined so that the head of the fastening piece can rotate.

The fastening piece 30 has a body portion 32 connected to a head portion 31 formed of an elongated rod-like body having an elongated elasticity, and the body portion extends in its longitudinal direction as shown in an exaggerated manner in FIG. A rear end portion 3 which is formed to be curved so as to have a center point of a radius of curvature R in a direction orthogonal to the body portion, and further has a body portion.
4 is provided with a screw portion 35. A pair of flanged bushes 36, 36 are screwed into a screw portion 35 of the rear end portion 34 of the fastening piece 30, and a coil spring 37 is fitted around the bush in a compressed state.
For this reason, a force in the right direction in FIG. 2 is urged by the spring 37 to the tightening piece 30.
Of the fixing piece 20 is pressed against the inner wall of the hook-shaped portion 22 of the fixed piece 20 with a gap S consisting of a wedge-shaped opening.

Reference numeral 40 denotes a release lever which engages with an opener (not shown) and controls the release of the weft. The release lever is rotatable about a shaft 41, and is pivotally mounted on the rear end of the fixed piece 20. The right half is bent so as to engage with the opener, while the other half engages a pin 42 attached to the rear end of the clamping piece between the forked portions. Is what you do. The pin 42 is provided with a female screw on the inner peripheral surface of the inner space and a projection attached to the outer peripheral surface thereof.
Is screwed into.

One example of an apparatus for carrying out the present invention is configured as described above. Next, its operation will be described.
FIGS. 2 and 6A show a state in which the weft Y is received from a weft insertion / transporter (not shown) at the center of the machine. At this time, the weft Y is gripped by the gap S between the wedge-shaped openings. I have. In this state, the weft Y is transferred from the center of the machine to the machine end. Then, at this machine end, an opener (not shown) and a release lever 4
When 0 is engaged, the release lever 40 rotates counterclockwise about the shaft 41 as a fulcrum. Then, the pin 42 that engages with the fork of one end of the release lever 40 also rotates counterclockwise around the shaft 41 as a fulcrum against the urging force of the compressed coil spring 37. Due to the pivotal movement of the pin, the clamping piece 30 integrally attached to the pin 42 moves to the left by L2 in the longitudinal direction as shown in FIG. 3, while moving in the Y-axis direction orthogonal to the longitudinal direction. It will move downward by δ.

For this reason, since the body portion 32 of the fastening piece 30 integrally attached to the pin 42 is formed to be curved, the curved surface of the body portion 32 is fixed as shown in FIG. It turns around the point X which comes into pressure contact with the middle part of the piece 20. Therefore, as shown in FIGS. 3 and 6B, the head 31 at the tip of the body 32 of the fastening piece 30 is fixed to the fixing piece 20.
Pivots counterclockwise along a guide surface 22a provided on the inner wall at the tip of.

As a result, a gap of t2 is formed in the wedge-shaped opening, and the weft Y is released. At this time,
0 itself moves by a distance of L2 in the longitudinal direction. That is, since the body portion of the fastening piece is formed to be curved in the longitudinal direction, even if the thickness of the weft becomes thicker, the moving distance in the longitudinal direction is smaller than that in the case of FIG. As shown in FIG. 2B, the number of the points for releasing the weft is relatively constant in the longitudinal direction.

[0016]

According to the present invention, as described above, the body connected to the head of the fastening piece that forms a gap between the wedge-shaped openings with respect to the inner wall of the hook-shaped part of the head of the fixed piece of the rapier head is moved longitudinally. In the direction perpendicular to the direction, the curved portion is formed so as to have a center of the radius of curvature, and the head of the fastening piece is made to pivot with respect to the longitudinal direction. The gap between the wedge-shaped openings when the weft is released can be made larger by a slight movement in the longitudinal direction of the tightening piece compared to the sliding one, so that the effect of releasing the weft at almost the same point regardless of the thickness of the weft can be obtained. Play.

[0017]

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of an apparatus for carrying out the present invention, including a partially cut-away portion.

FIG. 2 is a plan view including a partially cut-away portion of FIG. 1;

FIG. 3 is an explanatory view of a main part showing an operation state of the device shown in FIG. 1;

FIG. 4 is an enlarged view of a main part of a fastening piece.

FIG. 5 is an enlarged view of a main part of the conventional device, in which (A) shows a weft holding state and (B) shows a state in which the weft is released.

FIG. 6 is an enlarged view of a main part of the device embodying the present invention, in which (A) shows a weft holding state and (B) shows a weft releasing state.

[Explanation of symbols]

 Reference Signs List 20 fixing piece 22 hook-shaped part 22a guide surface 30 fastening piece 31 head Y weft

Claims (1)

(57) [Scope of request for utility model registration] 1. A receiving rapier comprising a fixed piece having a bent hook-like portion at a tip end thereof, and a fastening piece resiliently contacting the hook-shaped portion of the fixed piece. In a weft receiving and transporting device of a rapier loom having a weft grip formed in a gap between a wedge-shaped opening between an inner wall of a hook-shaped portion and an outer wall of a head of the fastening piece, an inner wall of the hook-shaped portion of the fixed piece is formed. And a guide surface which can be turned while the outer wall of the head of the fastening piece is in contact with the body. When the tightening piece moves in the longitudinal direction when the weft is released, the outer wall of the head of the tightening piece is swung along the guide surface of the inner wall of the hook-like portion of the fixed piece when the weft is released. A weft receiving and carrying element for a rapier loom, characterized in that a gap between the wedge-shaped openings is released.