JP3618574B2 - Manufacturing method and apparatus of slide fastener stringer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a method and apparatus for manufacturing a slide fastener stringer, and in particular, manufactures a stringer for a woven slide fastener in which a coiled element array made of synthetic resin monofilaments is woven along a side edge of the fastener tape at the same time. The present invention relates to a method and an apparatus.
[0002]
[Prior art]
A manufacturing method and manufacturing of a slide fastener stringer that uses a narrow loom employing a carrier bar for weft insertion and simultaneously weaves a fastener tape and simultaneously weaves and fixes a coiled continuous element row along one side edge of the tape. The apparatus is known as disclosed in, for example, Japanese Patent Publication No. 57-58922 and Japanese Patent Publication No. 6-55171. Here, the coil-shaped continuous element array is a monofilament made of synthetic resin, formed from a material, and a number of fastener element portions connected in a coil shape. The rows and the meshing heads are engaged and disengaged by operating the slider to open and close the slide fastener.
[0003]
Each fastener element portion has a meshing head disposed substantially orthogonal to the side edge of the fastener tape, and upper and lower leg portions extending substantially in parallel from both ends of the meshing head toward the inside of the fastener tape, It comprises an inverted connecting part that connects one of the upper and lower leg ends and the lower and upper leg part ends adjacent to each other in a substantially U shape, and the meshing head is on the side edge of the fastener tape. It has a bulging portion that bulges substantially in parallel. This bulging portion is formed in advance by stamping or the like on a monofilament before being introduced onto a narrow loom as in the manufacturing method of a slide fastener stringer disclosed in, for example, the above Japanese Patent Publication No. 57-58922, or Like the manufacturing method of the slide fastener stringer disclosed in the above Japanese Patent Publication No. 6-55171, the molding is performed on the mandrel using the tension generated in the filament when the fastener element portion is woven into the fastener tape.
[0004]
Briefly describing a general manufacturing method of the slide fastener stringer, a plurality of ground warp yarns constituting a part of the ground structure of the fastener tape, and a plurality of fixing warp yarns for fixing each fastener element portion on the fastener tape, Based on the weaving structure of the fastener tape, the upper and lower parts are distributed up and down in front of the weave and opened in two stages, and the weft carrier bar is reciprocated over the entire weaving width in the shed formed by one opening. Two reciprocating wefts are inserted into the opening. The folded ends of the two wefts are hooked by a latch needle or the like and are entangled sequentially with the loop at the previous folded end to form the side edge of the tape.
[0005]
At the same time, the mandrel that extends the synthetic resin monofilament previously woven into the fastener tape along the tape side edge on the return side of the weft carrier bar by reciprocating the filament carrier bar in another opening. A substantially U-shaped loop is formed so as to be wound around. A meshing head is formed in advance in the bent portion of the loop, or is formed by utilizing the tension of a monofilament that acts when wound around a mandrel. Next, the ground warp is turned upside down to form a new opening, and the weft is inserted into the opening.
[0006]
After the required number of weft insertions have been made, the filament carrier bar is reciprocated in another opening so that the monofilament is wound around the mandrel, and the next fastener element portion is formed and simultaneously woven into the fastener tape. . Such operations are repeated to produce a slide fastener stringer.
[0007]
[Problems to be solved by the invention]
Thus, by operating the weft carrier bar, the weft yarn for the fastener tape is inserted, and the filament carrier bar is operated to operate the synthetic resin between the outer side position and the inner side position of one side edge of the fastener tape. The fastener element portions are sequentially formed by reciprocating the manufactured monofilament so as to loop around the mandrel. Each time the weft is inserted and the fastener element is molded, a hammering is performed to complete the weaving of the fastener tape and the weaving of the fastener element portion.
[0008]
Even if wefts are used, the fastener element portion has a U-shaped folded portion, and the meshing head and the reverse connecting portion are continuous to the corresponding portions of the adjacent fastener element portions. When forming the next fastener element by operating the bar, especially when the monofilament is wrapped around the mandrel and reversed, the carrier bar for the filament returns while opening the upper and lower legs, so extremely large tension acts on the monofilament. The reversing part is easily dragged from the pre-weaving position to the warp supply side on the mandrel, and a strong pulling force acts on the fixing warp and weft entangled with the fastener element part including the part woven last time, These yarns can break during weaving.
[0009]
Also, even if not cut, the crimping form of the stringer fixing warp after weaving becomes larger than the set form, the pitch between adjacent fastener element parts becomes uneven, and at the same time the fastener element part The fastener is loosened and the fastener element part is easy to move in the length direction and width direction of the fastener tape, and the engagement with the other fastener element is not ensured or the desired engagement force is not obtained, and the slide fastener You can lose its function.
[0010]
The present invention has been made for the purpose of solving various problems that tend to occur in such a conventional woven slide fastener stringer, specifically, the fastener element portion is firmly fixed to the fastener tape, An object of the present invention is to provide a manufacturing method and a manufacturing apparatus for a woven slide fastener stringer having a stable form.
[0011]
[Means for Solving the Problems]
This object is effectively achieved by the invention according to claims 1 and 2 described below.
The method invention according to claim 1 introduces a synthetic resin monofilament before weaving the fastener tape being woven, and fixes the monofilament around the mandrel extending along one side edge of the tape. Repeatedly inserted into the opening of the warp, the meshing head projecting to the outside of the one side edge, and substantially parallel to the inside of the tape continuously from both ends of the meshing head almost perpendicular to the side edge Forming each fastener element portion comprising an extending upper and lower leg portion and an inverted connecting portion that connects one of the upper and lower leg ends and the lower upper leg portion adjacent to each other in a substantially U shape, and the tape In the manufacturing method of the slide fastener stringer that weaves sequentially at a predetermined pitch along one side edge at the same time as the weaving of the tape, before the weaving of the tape that is the molding site of each element part Arranged locking means, each element portion is formed by sequentially moved to fell the with beating was locked sequentially engaged with the locking means, the tape of woven by the tension at the time of each element portion MOLDED It is in the manufacturing method of the slide fastener stringer characterized by preventing moving to the opposite side to a direction.
[0012]
Further, the manufacturing method is implemented by the apparatus invention according to claim 2 of the present invention.
That is, the invention according to claim 2 comprises a weft carrier bar that reciprocates in the open ridges of a large number of aligned warp yarns to weave the fastener tape, and a weaving direction along the outer side of the aligned one edge portion of the warp yarns. A mandrel extending to the mandrel, and a monofilament made of a synthetic resin wound around the mandrel and reciprocatingly moved in the opening mouth of the aligned one end edge of the warp to sequentially form a coiled continuous element row and to be woven into the tape and a carrier made of a fastener stringer manufacturing loom having a reed for beating, is arranged in proximity to the reciprocating position of the monofilaments by the monofilament carrier, wherein the sequentially molded continuous element row and woven with beating successively engaged with each element portion to move in front, Zhang during molding of each element portion The weaving direction of the tape according to an apparatus for manufacturing the slide fastener stringer, characterized by comprising a locking means for preventing movement in the opposite side.
[0013]
The distance between the outer position of one side edge of the fastener tape being woven and the inner position within the woven region of the tape at a distance equal to the dimension between the meshing head of the fastener element portion and the reverse connection portion. The left and right filament carrier bars reciprocate in the weaving openings of the respective element portions together with the monofilament introduced before weaving. At this time, the monofilament is woven into the tape at the same time that the coil-shaped fastener element row is continuously formed while being reciprocated while being wound around the mandrel arranged at the outer position.
[0014]
In the present invention, the monofilament may be pre-stamped to form the meshing head, or the monofilament introduced before weaving is not subjected to special processing such as stamping, and the monofilament is made of a mandrel. When traveling around the circumference, a large tension may be generated in the monofilament, and the portion wound around the mandrel may be deformed flat by the tension to form the meshing head.
[0015]
The fastener element row formed in this way is beaten and woven with ground warp, fixing warp and weft every time each element part is formed. When weaving this type of weaved fastener stringer, In particular, when the cocoon is about to return to the standby position after the monofilament is wound around the mandrel to form a new element portion and then beaten, the monofilament is inserted through a filament carrier bar that supports the monofilament. Since a large tension is generated on the filament supply side, the hook starts to return to the standby position, and at the same time, the meshing head of the newly formed element portion tries to move on the mandrel to the filament supply side.
[0016]
When the meshing head moves on the mandrel to the filament supply side, the fixing warp or weft entangled with the element is easily pulled by the monofilament during weaving, or the manufactured fastener stringer has a weft spacing of It becomes larger than the set dimension, the tightening of each element part by the warp for fixing is also loosened, the pitch of each element part is not uniform, and the form is unstable, and the required meshing strength as a slide fastener is Not only can it not be obtained, but it is sometimes impossible to engage the fastener element rows.
[0017]
In the present invention, as described above, the locking means is disposed at the pre-weaving position of the tape, which is the molding site of each element portion, and is sequentially locked to the element portion to be molded. While the punching is finished and the next element part is molded and hammered, the element part is prevented from moving in the opposite direction to the weaving direction of the fastener tape due to the tension at the time of molding. Stabilization of the mounting form of the fastener element row with respect to the required securing strength.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described in detail with reference to the drawings.
1 to 3 show a weaving operation and a weft insertion operation of the fastener element row ER when manufacturing a continuous slide fastener stringer 1 by weaving. A narrow loom for a woven slide fastener is generally called a needle loom, and a large number of ground warps 2 and fixing warps 3 of a fastener element row ER are aligned and two or more reeds are omitted. After that, it leads to Orizen through the fence 4. By selectively operating the two or more wrinkles up and down, a first opening for wefting the ground weft 5 to weave the ground structure, and a weft inserting and weaving the fastener element row ER A second opening is formed. In this weft insertion, a weft carrier bar 6 and a filament carrier bar 7 are used.
[0019]
In this case, for each one reciprocation of the filament carrier bar 7 in one reciprocating operation, the mandrel 8 includes a meshing head EH disposed substantially orthogonal to the side edge of the fastener tape T, and the meshing head EH. The upper and lower legs L extending substantially in parallel from both ends toward the inside of the fastener tape T and the lower and right leg L ends adjacent to either the upper or lower leg L end are connected in a substantially U-shape. One fastener element portion E composed of the reversing connecting portion RC is formed. Note that the slide fastener stringer can also be manufactured for insertion of the weft by a normal loom using a normal kite or a jet fluid without using the weft carrier bar 6.
[0020]
In addition, in order to facilitate the understanding of these figures in particular, the number of various warps is reduced, and the meshing interval of the fastener element portion E is roughly shown, but actually , for example, as shown in FIG. Various warp yarns are made into a required number in consideration of the function as a fastener, and the fastener element row ER is also configured to exhibit the engagement function of the slide fastener.
[0021]
In the illustrated example, simultaneously with the weaving of the two fastener tapes T, the fastener element rows ER are respectively woven into the opposing side edges of the tape T while being formed. However, the present invention is not limited to the illustrated example. Naturally, a single fastener stringer is manufactured by weaving and forming a single fastener element row ER along one side edge of one fastener tape. It also includes. In this case, after engaging the fastener element rows ER of the two fastener stringers in the subsequent steps, the process proceeds to a normal slide fastener manufacturing process such as space formation, slider attachment, and fastener attachment.
[0022]
In the illustrated example, as described above, since the two fastener tapes T are woven and simultaneously woven while forming the fastener element rows ER at the opposite side edges of the tape T, the left and right fastener stringers 1 A plurality of the above-described ground warp yarns 2 and fixing warp yarns 3 which are constituent yarns of the yarn are divided into two groups on the left and right sides and introduced onto the loom, and in the center thereof are fastener element rows which are woven in a meshed state facing the left and right A plate needle-shaped mandrel 8 for molding and supporting the meshing head EH of the ER is extended in the weaving direction so as to distribute the left and right fixing warp groups to the left and right. Although not shown, the mandrel 8 is supported on the loom and vibrates in the vertical direction in accordance with the weaving timing of the synthetic resin monofilament MF, which is a constituent material of the fastener element row ER.
[0023]
Further, knitting needles 9 for forming ears are arranged at the pre-weaving positions along the respective outer edges of the left and right fastener tapes T, and the ground inserted by the reciprocation of the weft carrier bar 6 is inserted into the warp opening. The loop-shaped free end of the weft 5 is hooked on the knitting needle 9 and is entangled with the loop-shaped free end of the ground weft 5 formed by the previous weft insertion to form the ear 10 on the outer edge of the fastener tape T. To do.
[0024]
The above configuration is conventionally known widely, but in the present invention, in addition to the above configuration, at the position before the weaving of the fastener tape T which is a molding site of each element portion E of each fastener element row ER, Locking means is provided to lock the element portions E that are sequentially formed and prevent the element portions from moving to the opposite side of the tape weaving direction due to the tension at the time of forming. Yes.
[0025]
According to the illustrated example, the locking means is composed of one rectangular plate 11 for each of the left and right fastener element rows, and a step portion is formed in the middle of the length direction at the upper edge of each rectangular plate 11. Then, the rising engagement surface 11a of the stepped portion comes into contact with and is engaged with the side surfaces of the upper and lower leg portions L of the element portion E to be newly woven. Accordingly, the rising engagement surface 11a is arranged from the supply side of the fixing warp 3 toward the pre-weaving position, and the upper edge of each of the left and right rectangular plate members 11 sandwiches the mandrel 8 from the left and right. In parallel with a support member (not shown). In this embodiment, since the pair of left and right fastener stringers 1 are manufactured with the element portions E of the fastener element row ER alternately engaged with each other, the upper and lower leg portions L of the left and right element portions E to be newly woven are 1 in the weaving direction. It is divided. Therefore, the rising engagement surface 11a of the step portion formed on the left and right rectangular plate members 11 is also set at a position where one element portion E is scattered.
[0026]
Next, the manufacturing method of the fastener stringer 1 using the narrow loom constructed as described above will be described. The outer positions of the side edges facing each other in the woven region of the two fastener tapes T and the fastener element row ER As shown in FIG. 1, the width (the dimension between the meshing head EH of the fastener element portion E and the reverse connection portion RC) is set to the left and right as shown in FIG. The filament carrier bar 7 reciprocates alternately in the second openings along with the monofilament MF. At this time, the coil-shaped fastener element row ER is continuously formed while reciprocating as the monofilament MF winds around the mandrel 8 at the outer position.
[0027]
In this embodiment, the monofilament MF is not subjected to special processing such as stamping, and when the monofilament MF returns around the mandrel 8, the monofilament MF is controlled to generate a large tension. The portion wound around the mandrel 8 is deformed flat to form the meshing head EH. In the present invention, stamping is performed in advance on the portions corresponding to the meshing head EH and the reverse connecting portion RC of the monofilament MF. This includes applying it.
[0028]
The fastener element row ER formed in this manner is a fastener tape T which is woven with the ground warp yarn 2, the fixing warp yarn 3 and the weft yarn 5, as shown in FIG. It is woven into and fixed. By the way, when weaving a conventional woven fastener stringer of this type, especially when the monofilament MF is wound around the mandrel 8 to form a new element portion E and strikes and then the kite 4 returns to the standby position, Since the monofilament MF is strongly pulled toward the filament supply side via the filament carrier bar 7 that guides and supports the monofilament MF, the reed 4 starts to return to the standby position, and at the same time, the element portion E newly formed from the monofilament MF The meshing head EH moves along the mandrel 8 to the filament supply side.
[0029]
In this way, when the meshing head EH moves on the mandrel 8 to the filament supply side, the fixing warp 3 and the weft 5 that are entangled with the element E during the weaving are pulled by the monofilament MF to be cut or manufactured. 5 and FIG. 6, for example, the weft interval D in FIG. 5 and FIG. 6 is increased, the crimp form of the fixing warp 3 is also larger than the set form, and the tightening of each element portion E by the fixing warp 3 is loosened. The pitch of the element portions E is not uniform and the fixing becomes unstable, and not only the required engagement strength as a slide fastener cannot be obtained, but also the engagement of the fastener element rows itself becomes impossible. .
[0030]
Therefore, in the present invention, as described above, the locking means is disposed at the pre-weaving position of the tape, which is the molding site of each element portion E, and sequentially locked to the molded element portions, Stops the element part E from moving in the direction opposite to the weaving direction of the fastener tape T by the tension at the time of molding while the next element part E is molded and the hammering is performed. Then, the attachment form of the fastener element row ER with respect to the fastener tape T is stabilized, and the required meshing strength is ensured.
[0031]
In the illustrated example, as described above, the stepped rising locking surface 11a formed at the upper edge of the rectangular plate 11 is employed as the locking means. The operation of this locking means will be described. As shown in FIG. 1, the filament filament carrier is supported by the upper end edge of the rectangular plate 11 before the monofilament MF wrapped around the mandrel 8 and folded is supported. The bar 7 returns to the inside of the second opening, and, as shown in FIG. 2, moves to the front of the weave while sliding along the upper edge of the rectangular plate 11 and slides down at the step as shown in FIG. The rising engagement surface 11a engages both the yarn supply side surfaces of the upper and lower legs L.
[0032]
Accordingly, the upper and lower leg portions L after this locking are not affected by the fact that the hook 4 returns to the standby position and a tension is applied to the new element portion E in the yarn feeding direction. In order to stay in place, the fastener stringer 1 after weaving is also firmly fixed to the fastener tape T by the fixing warp 3 and / or the weft 5 in a state where the fastener element row ER is stable, and the required mesh strength is ensured. .
[0033]
FIG. 4 shows another embodiment of the locking means according to the present invention, in which the locking means is locked from below with respect to the fastener element row ER of the fastener stringer 1 being woven. In this embodiment, the locking means is disposed above the fastener element row ER of the fastener stringer 1 being woven, and the element portion E is locked from above. The locking means in this embodiment is a rectangular plate portion 13a supported by a support member (not shown) via a horizontal shaft portion 12 so as to be swingable up and down, and opposite to the shaft portion 12 of the rectangular plate portion 13a. It has the latching member 13 which consists of the latching arm part 13b which protruded substantially horizontally toward the weaving from the center of the edge part of the side, and is distribute | arranged above the woven fastener element row | line | column ER.
[0034]
A claw piece 13b 'for locking to the upper and lower leg portions of the element portion E immediately after being beaten is projected on the lower surface of the distal end portion of the locking arm portion 13b. Further, a spring 14 is attached to the locking member 13 for urging the locking arm portion 13b downward about the horizontal shaft portion 12, and simultaneously with the hammering, the spring 14 is urged. The upper and lower leg portions L are moved before weaving while the locking member 13 is rotated upward against the urging force, and the locking claw piece 13b 'is moved to the upper and lower leg portions L by the return movement of the flange 4. It automatically locks to prevent the element portion E from moving in the filament yarn feeding direction. In this embodiment, the locking member 13 is disposed above the fastener element row ER, and the upper and lower leg portions L of the newly woven element portion E are engaged with the claw pieces 13b 'from above. The locking member 13 may be disposed below the fastener stringer 1 so that the upper and lower leg portions L are engaged with the claw pieces 13b 'from below.
[0035]
In the above embodiment, when the monofilament MF is wound around the mandrel 8, the meshing head EH of each element portion E is formed using the tension generated when the filament carrier bar 7 reciprocates. Similarly to the manufacturing method of the slide fastener stringer disclosed in Japanese Patent No. 57-58922, the meshing head EH can be formed in advance by performing stamping before introducing the monofilament before weaving.
[Brief description of the drawings]
FIG. 1 is an explanatory view of a new element portion forming and weaving step of a manufacturing method of a slide fastener stringer to which a locking means according to a first embodiment of the present invention is applied.
FIG. 2 is an explanatory diagram of a process at the time of striking.
FIG. 3 is an explanatory diagram of a next element weaving process.
FIG. 4 is an explanatory diagram of a forming and weaving step of a new element part of a manufacturing method of a slide fastener stringer to which a locking means according to a second embodiment of the present invention is applied.
FIG. 5 is a partial plan view showing a structural example of a slide fastener stringer.
FIG. 6 is a side view of the same.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Slide fastener stringer 2 Ground warp 3 Fixing warp 4 筬 5 Ground weft 6 Weft carrier bar 7 Filament carrier bar 8 Mandrel 9 Knitting needle 10 Ear part 11 Rectangular plate material 11a Rise lock surface 12 Horizontal shaft part 13 Lock member 13a Square plate portion 13b Locking arm portion 13b ′ Claw piece 14 Spring T Fastener tape MF Synthetic resin monofilament ER Fastener element row E Element portion EH Interlocking head L Leg portion RC Reverse connection portion D Weft spacing

Claims (2)

A synthetic resin monofilament (MF) is introduced before weaving the fastener tape (T) being woven, and the monofilament (MF) extends along one side edge of the tape (T). While being wound around, repeated insertion into the opening of the fixing warp (3), the meshing head (EH) projecting outside the one side edge, and substantially perpendicular to the side edge of the meshing head (EH) The upper and lower legs (L) extending substantially in parallel toward the inside of the tape (T) from both ends, and the upper and lower legs (L) adjacent to either the upper or lower legs (L) Each fastener element portion (E) composed of a reverse connecting portion (RC) that connects the ends in a substantially U shape is formed, and at the same time as the weaving of the tape (T), along the one side edge portion In the manufacturing method of the slide fastener stringer (1) that weaves sequentially with a pitch of
A locking means (11, 13) is arranged before weaving the tape (T), which is a molding site of each element part (E), and each element part (E) to be molded is beaten and moved to the front of the weave. And the locking means (11, 13) are sequentially locked, and each element portion (E) is moved to the side opposite to the weaving direction of the tape (T) by the tension at the time of molding. A method of manufacturing a slide fastener stringer, wherein the slide fastener stringer is blocked. A weft carrier bar (6) that weaves fastener tape (T) by reciprocating in the open path of a large number of aligned warps (2,3), and outside the edge of the aligned one end of the warps (2,3) A mandrel (8) extending in the weaving direction along the mandrel (8) and a synthetic resin monofilament (MF) wrapped around the mandrel (8) From a weaving machine for manufacturing fastener stringers having a monofilament carrier (7) which is reciprocated to form a continuous continuous coil array (ER) and is woven into the tape (T), and a hook (4) for hammering. Become
It is arranged close to the reciprocating position of the monofilament (MF) by the monofilament carrier (7) , and is sequentially formed in the continuous element row (ER) to each element portion (E) that moves before weaving with hammering. It has locking means (11, 13) for sequentially locking and preventing the movement of the tape (T) in the direction opposite to the weaving direction due to the tension at the time of molding of each element part (E). An apparatus for producing a slide fastener stringer as a feature.

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