JP2017125283A - Weft yarn holding device of air-jet machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a weft yarn holding device of an air-jet machine capable of shortening a capture length of a weft yarn to a weft yarn capture pipe by holding an end part of the weft yarn when beating.SOLUTION: The weft yarn holding device of an air-jet machine which applies a tensile force to a weft yarn by inserting an end part of a weft yarn 91 jetted from a weft yarn jetting nozzle into a weft yarn capture pipe 84 when beating includes: a protruded part 2 positioned between a woven selvedge side of a plurality of warps stretched at a loom and the weft yarn capture pipe, and movable relatively in a direction facing to dents 82; and a pressing means 5 for pressing the protruded part to the dents by moving to hold the weft to between a tip end part 3 of the protruded part and the dents, where the pressing means presses the tip end part of the protruded part to the dents when the weft is inserted into the weft yarn capture pipe at beating, and separates the tip end part of the protruded part from the dents when beating is completed to release the weft.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a weft holder for an air jet loom. More particularly, the present invention relates to a weft retainer for an air jet loom that can hold the end portion of the weft yarn at the time of beating and can shorten the weft catch length to the weft catch pipe.

The air jet loom ejects the weft yarn from the weft jet nozzle together with the air, and then captures the weft yarn end from the weft catch pipe through the weft catch pipe by pushing or sucking the weft catch pipe with compressed air. Hold up to the top and strike. The longer the weft is captured by the weft capturing pipe, the stronger it can be held, so that it is necessary to make it long enough to withstand beating. However, since the weft caught in the weft catching pipe becomes unnecessary after the beating, there is no means for shortening the length of the weft to be caught by the weft catching pipe, that is, the weft needed only for holding. It was desired.
On the other hand, means for holding the ends of the wefts without using the weft catching pipe has been studied. For example, the holding device shown in Patent Document 1 holds a weft thread by pressing it against a flow path with compressed air blown from a blow nozzle of the slit after the weft thread has reached the slit when the fabric is sent out.

JP 2002-371448 A

However, since the holding device shown in Patent Document 1 holds the weft using compressed air, an extra fixed length of the weft is necessary as in the method using the weft catching pipe. Is not suitable for shortening the weft.
The present invention has been made in view of the above circumstances, and has a weft retainer for an air jet loom capable of holding the end portion of the weft yarn during beating and shortening the weft capture length to the weft capture pipe. The purpose is to provide.

In order to solve the above problem, the invention according to claim 1 is an air jet loom that inserts an end portion of a weft thread that is ejected from a weft thread injection nozzle into a weft catching pipe at the time of beating to apply tension to the weft thread. A weft holding tool that is positioned between the weft ear side of a plurality of warps stretched on the loom and the weft catching pipe and is relatively movable in a direction facing the wings; A pressing means for holding the weft between the tip of the protruding portion and the wing by moving the protrusion and pressing the wing against the wing. Is inserted into the weft catching pipe, the tip of the protrusion is pressed against the wing and when the lashing is completed, the tip of the protrusion is separated from the wing to release the weft. This is the gist.
The gist of a second aspect of the present invention is that, in the first aspect, at least a tip portion of the protruding portion is made of an elastic material.
The gist of a third aspect of the present invention is that, in the first or second aspect, the pressing means is constituted by a bar temple of the loom, and the protruding portion is fixed to the bar temple.

  According to the weft holder of the air jet loom of the present invention, it is located between the weft ear side of a plurality of warps stretched on the loom and the weft catching pipe and is relatively movable in the direction facing the wing. And a pressing means for holding the weft between the leading end of the protruding portion and the wing by moving the protruding portion and pressing the wing against the wing. In order to release the weft by pressing the tip of the protrusion against the wing when inserted into the weft capture pipe and releasing the weft by separating the tip of the protrusion from the wing when the beating is completed, Even if the length of the captured weft is shortened to weaken the weft holding force of the weft capturing pipe, the beating can be performed with the weft stretched. Further, by shortening the length necessary for holding the weft, it is possible to reduce the number of portions that become lint after beating.

If at least the tip of the protruding part is made of an elastic material, the tip of the flexible part is pressed against the weft and the heel, and the shape of the tip is changed according to the shape of the weft and the heel, thereby damaging the weft. Or can function as a cushioning material that does not deform the bag.
When the pressing means is constituted by a bar temple of the loom, and the protruding portion is fixed to the bar temple, the operation of pressing or separating the protruding portion against the wing or the approach of the bar temple and the heel This operation can be performed by the separating operation. With a very simple configuration, the weft can be sufficiently held and the beating can be performed in a state where the weft is stretched.

It is a schematic plan view for demonstrating the structure by which the weft holder of this invention is arrange | positioned at the loom. It is a model side view for demonstrating the structure by which the weft holder of this invention is arrange | positioned at the loom. It is a schematic plan view for demonstrating the state by which the weft was caught by the weft catching pipe. It is a schematic side view for demonstrating the state by which the weft was caught by the weft catching pipe. It is a schematic plan view for demonstrating the state which the front-end | tip part of the weft holding tool contacted the weft. It is a model side view for demonstrating the state which the front-end | tip part of the weft holder was in contact with the weft. It is a schematic plan view for demonstrating the state which the front-end | tip part of the weft holder is pressing the weft against the wing. It is a model side view for demonstrating the state which the front-end | tip part of the weft holder is pressing the weft against the wing.

  The items shown here are for illustrative purposes and exemplary embodiments of the present invention, and are the most effective and easy-to-understand explanations of the principles and conceptual features of the present invention. It is stated for the purpose of providing what seems to be. In this respect, it is not intended to illustrate the structural details of the present invention beyond what is necessary for a fundamental understanding of the present invention. It will be clear to those skilled in the art how it is actually implemented.

  The present invention is a weft holder for an air jet loom. This weft retainer is beaten in a state where tension is applied to the weft by inserting and holding the end of the weft spouted and ejected by compressed air from the weft spray nozzle. Applicable to air jet loom.

1. Configuration of Weft Holder This weft holder (1) is between a weft ear side (94) of a plurality of warps (92) stretched on a loom and a weft catching pipe (84), and A protrusion (2) disposed opposite the wings (82), and a tip (3) of the protrusion (2) by moving the protrusion (2) and pressing it against the wings (82) And pressing means (5) for holding the weft yarn between the wings (82) (see FIGS. 1 and 2).

The protrusion (2) is not particularly limited as long as it is configured to protrude toward the wing (82) with respect to the arrangement location. The tip (3) of the protrusion (2) is a part that contacts the weft (91) and presses against the wing (82) (see FIGS. 7 and 8).
The tip (3) of the projecting portion (2) faces the wing (82) and moves relatively to approach the wing (82), so that the weft (from the weft injection nozzle) 91) is pressed against the wings so as to be sandwiched between the wings (82). This “moving so as to approach relatively” means that the tip (3) moves and approaches the wing (82), or the wing (82) moves and approaches the tip (3). That means.
It is preferable that the tip (3) has a configuration that does not hinder the beating and does not deform the wing (82) by applying a large force. As an example of this, it is possible to use an elastic body made of an elastic material such as synthetic resin, rubber and elastomer. Further, the tip portion (3) may be made of a material different from other portions of the protruding portion (2). For example, the force of pressing can be increased by configuring the tip of the protruding portion from an elastic body and using the other portion as a spring or the like.
The tip (3) that contacts the wing (82) and the weft (91) of the protrusion (2) may be a flat surface, or a surface other than flat, such as an uneven surface or a curved surface. Also good.

  The pressing means (5) is a means for moving the tip portion (3) relative to the wing (82) to press or separate it. Examples of such means include an actuator that moves the tip portion in conjunction with the striking operation. Further, the protrusion (2) may be fixed to the bar temple (83) that moves in accordance with the beating operation, and the bar temple may be used as the pressing means. This is because the bar temple (83) approaches the heel at the time of lashing, and the tip portion can be directly pressed against the weft and the wing (82). Further, the protrusion may be fixed to a bar temple, a frame, or the like in the vicinity of the scissors that move in accordance with the scissor operation, and the scissors may be used as the pressing means. This is because the tip portion can be pressed against the weft and the cocoon as it is by providing the protruding portion at a position where the heel approaches the bar temple at the time of lashing.

2. Holding of Weft by Weft Holder A method for holding a weft at the time of beating with this weft holder will be described along the procedure of beating.
As shown in FIGS. 1 and 2, the weft holder 1 includes a bar-shaped protruding portion 2 having a root portion 4 fixed to a bar temple 83 of a loom, and is formed of a communicating hole made of synthetic resin. The tip portion 3 of the protruding portion 2 is disposed so as to face the end portion of the wing 82 of the ridge 81. Further, in the loom in which the weft holder 1 is disposed, the scissors 81 are moved to the bar temple 83 side to perform scissors.

(1) As shown in FIGS. 3 and 4, the warp yarn 92, in which the weft 91 urged by compressed air from a weft injection nozzle (not shown) located in the left direction in FIG. The end portion of the yarn is inserted into the weft catching pipe 84 by the compressed air ejected from the catching nozzle 85. Further, the collar 81 starts moving toward the bar temple 83 that is the pressing means 5, and the tip 3 of the protrusion 2 and the edge of the collar 82 approach each other.
(2) As shown in FIGS. 5 and 6, the further approach between the tip 3 of the protrusion 2 and the end of the cocoon 82 comes into contact with the weft 91 over which the tip 3 is stretched, and the cocoon Push towards the end of 82.

(3) As shown in FIGS. 7 and 8, the distal end portion 3 of the protrusion 2 presses the weft 91 against the reed wing 82 by further movement of the reed 81, thereby holding the weft 91. Further, along with the pressing, the protruding portion 2 is deformed so as to be crushed by the wings 82. In this state, the wing 82 is pressed against the edge of the woven fabric 93, and the lashing is performed.
(4) The collar 81 is separated from the bar temple 83, and at the same time, the tip 3 of the protrusion 2 is separated from the collar 82. Further, the collar 81 is also separated from the weft 91 that is part of the woven fabric 93.

  The present weft holder 1 holds the weft 91 being beaten by the above-described procedure. Therefore, the length of the weft 91 captured by the weft capture pipe 84 is shortened, and the weft 91 holding force by the weft capture pipe 84 is reduced. Even if it is weakened, the holding force by the tip 3 of the protrusion 2 is applied, so that the weft 91 can be beaten without being displaced in the state where the weft 91 is stretched. Then, by shortening the length necessary for holding the weft 91, it is possible to reduce the number of parts that become lint after hammering.

  The foregoing examples are for illustrative purposes only and are not to be construed as limiting the invention. Although the invention has been described with reference to exemplary embodiments, it is to be understood that the language used in the description and illustration of the invention is illustrative and exemplary rather than limiting.

  DESCRIPTION OF SYMBOLS 1; Weft retainer, 2; Protruding part, 3; Tip part, 5; Pressing means, 81; Reed, 82; Reed wing, 83; Bar temple, 84; Weft capture pipe, 85; 92; Warp, 93; Woven cloth, 94; Woven ear side.

Claims (3)

A weft holder of an air jet loom for applying tension to the weft by inserting the end of the weft ejected from the weft jet nozzle at the time of beating into the weft catching pipe,
A protrusion that is positioned between a weft ear side of a plurality of warps stretched on the loom and the weft capture pipe and is relatively movable in a direction facing the wings;
A pressing means for holding a weft between the tip of the protrusion and the wing by moving the protrusion and pressing the wing against the wing;
With
The pressing means presses the leading end of the protruding portion against the lash when the weft is inserted into the weft catching pipe at the time of beating, and the leading end of the protruding portion is pressed against the beating when the beating is completed. A weft holder that releases a weft by separating it from a wing.   The weft holder according to claim 1, wherein at least a tip portion of the projecting portion is made of an elastic material. The pressing means is constituted by a bar temple of the loom,
The weft holder according to claim 1 or 2, wherein the protrusion is fixed to the bar temple.

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