JP6117335B2 - loom - Google Patents

Description

The present invention relates to a loom in which a loom for a loom used for forming a warp opening for weft insertion is formed of a synthetic resin .

  2. Description of the Related Art Conventionally, when a woven fabric is manufactured by a loom, a large number of loom healds are attached to a plurality of heald attachment frames to form warp openings, and warps are passed through warp insertion holes provided in the loom heald. In weaving, at least a pair of heald mounting frames are operated so as to move up and down in directions opposite to each other to perform warp opening forming operations and sequentially send out the warps while wefting.

  In conventional loom healds, a metal plate is punched to form predetermined attachment holes at both ends, and a warp insertion hole is formed at the center. Metal loom healds have a constant thickness, little variation, and high durability, but because they are made of metal, they require a large force for molding and have a large mass, so there is a lot of driving energy during weaving. I needed it. Furthermore, when the warp passes through the warp insertion hole of the loom heald, it rubs against the inner edge of the warp insertion hole, so that the warp is rubbed and the glue of the warped yarn is likely to fall off. It was. Of these metal loom healds, those having a short dimension of 30 cm or less were usually those having a thickness of 0.25 to 0.30 mm.

  Therefore, as disclosed in Patent Document 1, a loom heald formed of a synthetic tree material has been proposed. The loom heald is formed by injection molding or punching a synthetic resin material with a synthetic resin plate, has an engagement hole at both ends of the heald body, and has a warp insertion hole of a predetermined size at the center. It is what.

JP 2011-162921 A Japanese Utility Model Publication No. 55-15218

  However, the loom heald disclosed in Patent Document 1 is for weaving a wide woven fabric that is woven by a water jet loom, and the loom heald elevating speed is, for example, about 1000 rpm. Met. On the other hand, for example, in the case of a loom that weaves a fastener tape of a slide fastener, the weft insertion distance is short because the width of the fastener tape, which is a woven fabric, is narrow, and the rotation speed of the loom heald is, for example, about 1800 rpm. Become. For this reason, the resin-made loom heald has a problem in durability because the resin material cannot withstand the inertial force acting during the reciprocating motion. Furthermore, if the thickness is increased to increase durability, the number of loom healds per unit width with respect to the heald mounting frame decreases, and in order to increase the number of loom healds, the heald mounting frame must be enlarged. However, the size would increase. In general, a loom heald for weaving a wide woven fabric is about 30 cm in length, and when it is used for a high-speed rotary loom for a narrow tape-shaped fabric, its drive The loom heald cannot withstand the inertial force of reciprocating motion that sometimes occurs, and the loom heald tends to be easily damaged.

The present invention has been made in view of the above-described background art, and provides a loom equipped with a resin-made loom heald that is capable of weaving a narrow tape-shaped woven fabric at high speed, has high durability, and has a high space efficiency. The purpose is to provide.

This invention has a warp insertion hole through which a warp forming a tape-like narrow woven fabric is inserted, and a loom heald formed in a vertically long thin plate, and the loom heald is attached. A loom comprising a heald attachment frame member having a heddle attachment frame and woven a fastener tape of a slide fastener that is a narrow woven fabric, wherein the loom heald is attached through which an attachment bar of the heald attachment frame is inserted Holes are provided at both ends, the thickness is 0.35 to 0.60 mm, and the whole is made of synthetic resin. The heald mounting frame is mounted with 18 to 22 healds for the loom arranged side by side. The distance between the warps at both ends is a loom of 0.0167 Lx or less, where the width of the fastener tape is x mm and the distance from the weaving opening to the heald mounting frame member in the front row is L mm . The loom heald has a length of 140 to 160 mm, for example.

The heald mounting frame member is provided with a heald holding member that suppresses vertical play of the loom heald on the frame portion facing the mounting bar .

The heald holding member is provided in a frame portion above the heald mounting frame member .

According to the loom of the present invention , it is possible to efficiently weave a narrow woven fabric such as a fastener tape in the same loom space and loom rotation speed as that of the metal heald. Moreover, by using a resin loom heald, the mass of the entire heald mounting frame member is reduced, and the heald mounting frame can also be reduced in weight and weight, so that driving power can be suppressed and driving energy can be reduced. And noise can be greatly reduced.

  In addition, unlike metal healds, metal powder does not come out and the fabric is not soiled by metal powder. Even if the resin-made loom heald is worn due to the passage of warp, a defect in the woven fabric does not occur suddenly, and the loom heald can be reliably replaced before the defect occurs. Further, since the heald holding member suppresses the rattling of the loom heald, noise during weaving is reduced and the durability of the loom heald increases.

It is a fragmentary perspective view which shows the use condition of the heald for looms of the loom of one Embodiment of this invention. It is a top view of the heald for looms of this embodiment. It is a partial expanded front view of the heald for looms of this embodiment. It is a partial enlarged plan view which shows the edge part of the heald for looms of this embodiment. It is a partial enlarged plan view which shows the center part of the heald for looms of this embodiment. It is a partial enlarged front view which shows the heald attachment frame member which attached the heald for looms of this embodiment. It is AA sectional drawing of FIG. It is a schematic plan view from the loom of the loom to which the heald for the loom of this embodiment is attached to the heald attachment frame member.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The loom heald 10 of the loom of this embodiment is formed by punching with a synthetic resin plate. The synthetic resin is composed of polyethylene terephthalate (PET) and polyethylene naphthalate (PEN), and contains 10 to 30% by mass, preferably 15 to 25% by mass, more preferably 18 to 20% by mass of PEN.

  The loom heald 10 is formed symmetrically in the longitudinal direction and is formed into a flat and elongated shape. The one end portion 10a and the other end portion 10b are formed with elongate mounting holes 12a and 12b that are inserted into mounting bars 22 of the heald mounting frame 20 described later. The loom heald 10 is formed to a uniform thickness as a whole, and is formed to a thickness of 0.35 to 0.60 mm, preferably 0.40 to 0.55 mm, more preferably 0.45 to 0.50 mm. ing. The central portion 10c of the loom heald 10 is formed with a pair of twisted portions 10d in which portions with a predetermined interval including the central portion 10c are twisted in the same direction. The distance between the twisted portions 10d is, for example, about 20 mm in the case of the loom heald 10 having a total length of about 150 mm, and can be appropriately set within a range of 15 to 30 mm. The twist angle of the twisted portion 10d is 10 to 35 °, preferably 15 to 30 °, and more preferably 20 to 25 °.

  A warp insertion hole 14 through which the warp 24 is inserted is formed at the center of the loom heald 10 and at the center of the twisted portion 10d. The warp insertion hole 14 is formed in a rectangular shape in which a rounded R portion 14a is formed, and is formed in a substantially square through hole when viewed from the angle twisted by the twisted portion 10d. The radius of curvature of the R portion 14a of the corner portion 14a of the warp insertion hole 14 is larger than the diameter of the warp 24, and the warp 24 is less likely to fluff due to rubbing.

  As shown in FIG. 6, the loom heald 10 is attached to the heald attachment frame member 30 by attaching the loom heald 10 to the attachment bar 22 formed integrally with the heald attachment frame 20 made of a metal plate such as stainless steel. This is done by fitting the holes 12a. The mounting bars 22 are provided on the upper and lower sides of the heald mounting frame 20 in parallel with the upper and lower frame portions 20a, respectively, and a cut-out portion 22a is formed in the central portion of the mounting bar 22, so that a pair of mounting bars in a cantilever state. 22 are provided opposite to each other at the tip 22b. A mounting bar (not shown) on the lower side of the heald mounting frame 20 is similarly fitted in the mounting hole 12b of the loom heald 10 so that the predetermined loom heald 10 is mounted on the heald mounting frame 20 at regular intervals.

  Here, the width of the mounting bar 22 is slightly narrower than the length of the mounting holes 12a and 12b, and is formed so as not to cause large rattling during the weaving operation. Further, a heald holding member 26 is fixed to the upper frame portion 20a of the heald mounting frame 20 by screws 28, thereby eliminating play when the loom heald 10 is mounted on the heald mounting frame 20. Similarly, the heald holding member 26 may be attached to the frame portion below the heald attachment frame 20. Thereby, rattling of the loom heald 10 at the lower side is suppressed.

  Next, the operation of the loom heald 10 and the heald mounting frame member 30 according to this embodiment will be described. First, attachment of the heald attachment frame member 30 to the loom will be described. At least one pair of heald attachment frame members 30 to which a predetermined number of loom helds 10 are attached are attached to the loom and reciprocate up and down in opposite directions so as to be an opening through which the weft is inserted between the warps 24. Form. Normally, eight warp yarns 24 are inserted into the heald attachment frame member 30, and the eight heald attachment frame members 30 are attached to a loom, and a fastener tape or the like of a slide fastener having a width of about 12 to 17 mm is woven. Therefore, for example, when 60 loom healds 10 are used, if the thickness is 0.4 mm, even if the loom healds 10 are stacked, the thickness is 24 mm, and a width that is significantly wider than the tape width to be woven is required. To do. Further, at the position where the wefts are inserted and beaten, the distance between both ends of the warp yarns 24 is substantially the same as the tape width. Are preferably as close to each other as possible. Therefore, in order to send the warp yarns 24 at both ends of the 60 warp yarns to the weft insertion position at an angle as close to parallel as possible, the interval between the heald mounting frame member 30 and the weft insertion position must be separated, and the large size of the loom It was not preferable because it led to the conversion. Therefore, the loom heald 10 is preferably as thin as possible. In the case of a conventional metal heald, sufficient strength can be obtained. Therefore, a short standard having a length of 30 cm or less is usually 0.25 to 0.30 mm. It was the thickness of.

  In the case of a normal wide woven loom, as long as the loom itself is large and a metal heald is used, the above-described problems of the thickness of the loom heald 10 and the feed angle of the warp 24 do not occur. However, when weaving a narrow fabric such as a fastener tape for a slide fastener, the weft insertion distance of the weft yarn is short, so that the reciprocating motion of the heald mounting frame member 30 can be speeded up, and also from the viewpoint of weaving efficiency The rotational speed of the loom is significantly higher than that of the wide fabric. When the rotational speed of the loom increases, a large inertial force acts on the loom heald 10 that reciprocates, and higher strength is required as the rotational speed increases.

  Therefore, in the case of the resin loom heald 10 made of resin, it is preferable that it is as thin as possible in order to shorten the distance to the weft insertion position, and a certain thickness is required because strength is necessary for speeding up the loom. There were conflicting issues that were required.

  Therefore, in the present invention, the thickness of the resin loom heald 10 capable of maintaining the strength capable of high-speed rotation while suppressing the increase in size of the loom is 0.35 to 0.60 mm, preferably 0.40 to 0. .55 mm, more preferably 0.45 to 0.50 mm. The length of the resin loom heald 10 was shortened to 160 to 140 mm, preferably 155 to 145 mm, and more preferably 150 mm. Further, the resin material is composed of polyethylene terephthalate (PET) and polyethylene naphthalate (PEN), and contains 10 to 30% by mass, preferably 15 to 25% by mass, more preferably 18 to 20% by mass of PEN. As a balance between cost and material strength. Thereby, the weaving operation of the fastener tape can be performed using the resin weaving machine heald 10 at the same feeding distance of the warp 24 and the loom rotation speed as the metal heald.

  Normally, when weaving a narrow woven fabric such as a fastener tape, 18 to 22, preferably 20 warp yarns 24 are provided on one heald mounting frame member 30 because of the structure of the tape woven structure and the efficiency of the weaving operation. It is desirable to arrange the loom heald 10 so that it can be inserted. The heald attachment frame member 30 through which the 20 warp yarns 24 are inserted is a plain weave frame, and the other frames are an oblique weave or satin weave frame. In addition, the normal fastener tape has a width of about 12 to 17 mm, and as described above, it is desirable that the warp yarns 24 at both ends be as parallel as possible to each other at the position to be beaten. The width of the fastener tape 32 is xmm, the distance between the warp yarns 24 at both ends of the frontmost heald mounting frame member 30 is αxmm, and the frontmost heald from the weaving hole 34a that is beaten by the reed 34 It has been found that when the distance to the mounting frame member 30 is Lmm, it is desirable that 1 ≦ α ≦ 0.0167L. If α is equal to or greater than the above upper limit, adverse effects such as hindering the movement of the front lead and damaging the warp 24 will occur. Therefore, for example, in the case of L = 70 mm, if x = 12 mm, the upper limit width is 14.0 mm, and if x = 17 mm, the upper limit width is 19.9 mm. When the heald mounting frame member 30 is designed so that the narrowest width x = 12 mm can be woven, if 20 healds 10 for looms are arranged on the heald mounting frame member 30 for plain weaving, the length is set to 0.00. 7 mm is the upper limit of the thickness of the loom heald 10 simply arranged. However, since a gap is naturally required between the loom healds 10, it is not preferable for the loom heald 10 to have a thickness of 0.6 mm or more for the fastener tape of the slide fastener.

  According to the loom heald 10, heald mounting frame member 30, and loom of the embodiment of the present invention described above, weaving a narrow woven fabric such as a fastener tape in the same weaving space and loom rotational speed as a metal heald. Can be performed efficiently. Moreover, by using the resin loom heald 10 made of resin, the mass of the entire heald mounting frame member 30 is reduced, and the heald mounting frame 20 can also be reduced in weight and weight, so that driving power can be suppressed. Driving energy and noise can be greatly reduced. Furthermore, unlike metal healds, metal powder does not come out and the fabric is not soiled by metal powder. The resin loom heald 10 does not suddenly cause a defect in the woven fabric even if wear due to the passage of the warp yarn 24 occurs, and the loom heald 10 can be surely replaced before the defect occurs. it can. Moreover, since the rattling of the loom heald 10 is suppressed by the heald holding member 26, noise during weaving is reduced, and durability of the loom heald 10 is increased.

Note that the loom of the present invention is not limited to the above embodiment, and a pair of twisted portions in which a predetermined interval including the central portion is twisted in the same direction is not formed in the central portion of the loom heald. The warp insertion hole may not be a quadrangle formed such that the corners are formed in an arc shape and the pair of sides are positioned in the horizontal direction. Moreover, as long as the kind of resin can maintain fixed intensity | strength, resin materials other than the above can be used. Further, in addition to those formed by punching with a synthetic resin plate, they may be formed by resin molding such as injection molding.

10 Looms Held 12a, 12b Mounting hole 14 Warp insertion hole 20 Held mounting frame 22 Mounting bar 24 Warp 26 Held holding member 30 Held mounting frame member

Claims (4)

The warp insertion hole (14) of warps to form a tape-like narrow fabric (24) is inserted having a central portion, and the loom heddle formed elongated thin plate (10),
A heald mounting frame member (30) having a heald mounting frame (20) to which the loom heald (10) is mounted;
A loom for weaving a fastener tape of a slide fastener which is a narrow fabric,
The loom heald (10) has mounting holes (12a, 12b) through which the mounting bars (22) of the heald mounting frame (20) are inserted at both ends, and has a thickness of 0.35 to 0.60 mm as a whole. Is made of synthetic resin,
The heald mounting frame (20) is mounted with 18 to 22 loom healds (10) side by side,
When the distance between the warp yarns (24) at both ends of the heald mounting frame member (30) is xmm as the width of the fastener tape, and the distance from the weaving opening to the heald mounting frame member (30) in the front row is Lmm The loom is 0.0167 Lx or less .   The loom according to claim 1, wherein the loom heald (10) has a length of 140 to 160 mm. Claims the heald mounting frame member (30), said mounting bar (22) and the opposite frame portion (20a), provided the vertical suppressing play heald pressing member of said loom heddle (10) (26) Item 2. The loom according to item 1 . The loom according to claim 3, wherein the heald holding member (26) is provided on a frame portion (20a) above the heald mounting frame member (30).

Images