JPH08144156A - Beating device in weaving machine - Google Patents

Abstract

PURPOSE: To produce a uniform woven fabric of high density by preventing the cloth fell and its vicinity fabric from withdrawing along the reeds in the upward and downward directions, while the cloth fell moves from the withdrawal position to the weave opening. CONSTITUTION: In a weaving machine in which the reeds are brought into contact with the cloth fell which withdraws more toward the warp-feeding side than the foremost position of the reeds and the cloth fell is brought together with the reeds to the foremost position to beat the weft, a supporter 20 is mounted to the beater all over the width of the woven fabric to support the fabric F, as it contacts with the fabric near the cloth fell on beating.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reed beating device for a loom, and more particularly, when a reed is advanced, a reed is placed at the front of the weave, which is retracted from the most advanced position of the reed to the warp delivery side. The present invention relates to an improvement of a weft-driving technique in a loom that beats a weft with a reed to bring the weaving cloth to the most advanced position of the reed.

[0002]

2. Description of the Related Art The higher the weft density, the greater the amount the cloth fell moves toward the warp delivery side from the most advanced position of the reed. As a result, it is known that the fabric near the weave causes a bumping phenomenon (waviness phenomenon) during beating, and it is difficult to obtain a fabric having a desired weft density. Conventionally, as a measure for preventing such a bumping phenomenon, for example, the one proposed in JP-A-47-35357 is known.

In the case of the prior art disclosed in Japanese Patent Laid-Open No. 47-35357, the woven fabric is pressed by at least one surface of the woven fabric by a pressing member. The extending pressing member presses the fabric from the upper surface or both the upper and lower surfaces. In addition,
The pressing member is attached to the temple holder. Further, it is said that the position of pressing should be as close to the cloth fell as possible.

[0004]

However, JP-A-47-3
The prior art of No. 5357 is unable to weave a woven fabric having a high and uniform weft density. This is because the higher the density of the weft yarns, the more the wefts are retracted from the most advanced position of the reeds after the reeds are beaten, and the phenomenon that the cloth fell to the warp delivery side occurs. As described above, the pressing member should be provided at a position as close to the cloth fell as possible. However, in order to avoid interference with the reed, the tip of the pressing member cannot be installed further on the delivery side than the most advanced position of the reed. That is, it is physically impossible to press the woven fabric near the cloth fell, in other words, from the retracted cloth fell to the most advanced position of the reed.

Therefore, at the time of hitting the reed, that is, between the time when the reed comes into contact with the cloth fell retracting to the delivery side and the time when the reed reaches the most advanced position, the reed is inclined forward with respect to the warp line. In such a loom, as the reed moves forward, the weaving cloth and the cloth near the weaving cloth escape downward along the reed wing. Therefore, in the above-mentioned conventional technique, the beating force cannot be sufficiently transmitted to the cloth fell. In addition,
In order to weave a fabric having a high weft density, it is common practice to make the tension of the lower warp higher than that of the upper warp. However, this conversely promotes the escape of the cloth at the front and the vicinity of the cloth to the lower side during beating,
As a result, it is not possible to weave a woven fabric with a high and uniform weft density. On the other hand, in the case of a loom in which the reed is tilted backward with respect to the warp line during beating, the weaving cloth and the cloth near the weaving cloth may escape upward along the reed wing. In this case as well, the beating force cannot be sufficiently transmitted to the cloth fell.

In view of the state of the art as described above, an object of the present invention is to effectively prevent the woven cloth near the cloth fell and the cloth near the cloth escaping along the reed wing, thereby providing a uniform and high weft density. Weaving the textiles.

[0007]

For this reason, in the present invention, the reed is brought into contact with the reed which is retracted from the most forward position of the reed to the warp feeding side, and the reed is placed together with the reed. In a loom that beats the weft yarn by bringing it to the forward position, a supporting member for supporting the fabric in contact with the fabric near the cloth fell at the time of beating is provided on the beating member corresponding to the full width of the fabric. To do. The repulsion member refers to a swinging member including a reed (reed), a lead holder, and a sled sword.

[0008]

When the reed moves forward, the support member attached to the reed striking member moves forward together with the reed. At the time of beating, that is,
The support member is in contact with the woven fabric near the cloth fell when the reed starts to come into contact with the cloth fell retracting to the warp delivery side, and when the reed moves further and drives the weft into the cloth fell. Therefore, even if the fabric near the cloth fell and the cloth near the cloth try to escape along the reed wing as the reed moves forward, the support member supports the cloth near the cloth so that the escape can be effectively suppressed. . Of course, the support member is provided on the repulsion member in consideration of the direction in which the cloth fell near the cloth fell and the cloth near the cloth fell when the cloth is beaten. For example, at the time of beating, when the woven fabric and the fabric near the woven fabric escape downward along the reed wing, the support member is provided on the beating device so as to contact the lower surface of the woven fabric.

[0009]

1 and 2 show one embodiment of the beating device according to the present invention. The lower ferrule 3 of the upper and lower ferrules 3 for supporting the reed 1 is sandwiched between the front and rear lead holders 5 and 7, and fastened and fixed by fastening bolts 9. The lead holder 7 on the rear side is mounted on the rocking shaft 13 via a plurality of sled swords 11. The above is the conventional structure of the repulsion member, that is, the reed surroundings.

In the present invention, the supporting member 20 is attached to the cloth fell side of the lower die 3, that is, the side facing the guide plate 15. The guide plate 15 is attached to a tumble bar which is provided between a pair of left and right loom frames (not shown). The guide plate 15 is in contact with the lower surface of the fabric F at its tip portion to support the fabric F. In the illustrated example, the support member 20 is a plate-shaped member that extends in the weaving width direction over the entire weaving width, and has a hairpin shape that extends upward and folds back and extends downward. It has the shape of a bait. The folding position of the supporting member 20 is set so that the reed is almost on the warp line when the reed is at the most advanced position as shown in the figure. Specifically, at the folding position of the support member, at least the time when the support member 20 reaches the most advanced position after the reed during reciprocation comes into contact with the cloth fell in the retracted position B (see FIG. 2). Set so that it contacts the lower surface of the woven fabric.

However, the support member 20 does not necessarily have to have the shape of the hairpin-shaped abutment seat as described above, but may be an L-shaped plate member protruding toward the guide plate 15. Further, in the above embodiment, the supporting member 20 is a plate-shaped member,
Since the base 3 and the lead holder 5 are fastened and fixed to each other, the height of the folded portion of the support member can be adjusted by loosening the fastening. Further, not limited to the supporting member 20 of the embodiment, as shown in FIG. 3, a protrusion 30 having the same thickness as the reed blade is integrally formed on the reed blade 1, and the upper surface of the protrusion 30 at the time of beating. The lower surface of the fabric F may be supported by. It should be noted that all the reed blades 1 may be reed blades having the protrusions 30 formed integrally therewith, or the reeds having the protrusions 30 integrally formed for each of a plurality of normal reed blades 1 having no protrusion 30. The wings may be arranged one by one. That is, the reeds having the protrusions 30 may be arranged intermittently over the width of the cloth.

In the case of weaving a woven fabric having a high weft density, when the reed reaches the most advanced position A and then retreats, the front of the weave is also shown in FIG.
As shown in (1), the reed is moved from the most advanced position A, in other words, from the beating position A to the retracted position B. At the time of the next beating, the advancing reed comes into contact with the cloth fell at the retracted position B, and by further advancing the reed, the cloth is advanced from the retracted position B to the reeding position A and the weft yarn in the opening of the warp T is removed. Drive into the cloth to complete the repulsion.

When the reed is pushed by the reeds from the retracted position B to the reeding position A, the reeds are inclined forward with respect to the warp line. That is, the angle θ formed by the warp line and the reed portion above the contact portion of the reed with the fabric F is an acute angle. Therefore, before the reed advances to the reed striking position A, the cloth fell F and the cloth F near the cloth fell try to escape downward along the reed wing 1. However, in the case of the present invention, the supporting member 20 moves forward together with the reed while contacting the lower surface of the fabric F near the cloth fell during beating, and supports the fabric F near the cloth fell from below. As a result, it is possible to effectively prevent the woven fabric F and the fabric F near the woven fabric from escaping downward, so that the weft yarn can be driven into the woven fabric with a sufficient repulsive force.

It is desirable that the surface of the support member that comes into contact with the fabric be subjected to an appropriate surface treatment to prevent abrasion. Further, it is desirable to set the height of the supporting member so that the height of the supporting member can be adjusted in order to cope with the change of the beating point. In the embodiment described above, the supporting member is provided on the repulsion member so as to be located below the cloth fell, and the lower surface of the fabric F is supported.
However, if the weaving cloth and the fabric near the weaving cloth tend to escape upward along the reed wing during beating, the supporting member is provided on the reed beating member so as to be located above the weaving cloth. , The upper surface of the fabric F will be supported. The tendency to escape upward appears in a loom in which the reed is tilted backward during beating, and in a loom in which the tension of the upper warp is set to be higher than that of the lower warp.

[0015]

Since the fabric at a position sufficiently close to the cloth fell can be supported, it is possible to effectively prevent the cloth near the cloth fell and the cloth near the cloth from escaping along the reed wing. Therefore, since the weft yarn can be driven into the front of the weave with a sufficient repulsion force, a woven fabric having a very uniform and high weft density can be woven.

[0016]

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a beating device of the present invention in a state where a reed is advanced.

FIG. 2 is a side view showing the reed in a retracted state.

FIG. 3 is a side view showing another embodiment of the beating device of the present invention in a state where the reed is advanced.

[Explanation of symbols]

 1 Reed wing 3 Clasp 11 Thresword 13 Rocking shaft 15 Guide plate 20 Support member A Reed point B Retreat position D Cloth front movement distance F Woven T Warp

Claims (3)

[Claims] 1. A reed is beaten by bringing the reed into contact with the weaving cloth which is retracted from the most advanced position of the reed to the warp delivery side and bringing the reed together with the reed to the most advanced position of the reed. In the loom, the beating device of the loom, wherein a supporting member for contacting the fabric near the cloth fell and supporting the fabric at the time of beating is provided on the beating member corresponding to the entire width of the fabric. 2. The device according to claim 1, wherein the support member is a plate-shaped member. 3. The apparatus according to claim 1, wherein the support member is a protrusion integrally formed on the reed wing.