JP4225987B2 - Warp knitting fastener tape making machine - Google Patents

Description

  The present invention relates to a machine for producing a warp knitted fastener tape for a slide fastener in which a core string is knitted simultaneously with knitting of a tape along a longitudinal side edge portion of a fastener tape having a warp knitted structure.

  Conventionally, when a fastener tape is knitted with this type of warp knitting structure, a warp knitting fastener tape for a slide fastener in which a core string is simultaneously knitted is disclosed, for example, in Japanese Utility Model Publication No. 56-16088 (Patent Document 1), -56713 (Patent Document 2) and the like.

  According to Patent Document 1, as the first embodiment, the tape main body is knitted with a double structure by a double-row needle, and the element mounting portion connected to the mounting portion is also surrounded by the core material. It is knitted with a double tricot knitting structure with row needles to form a huge part. Further, in the second embodiment of the document 1, the front side of the element mounting portion of the tape main portion and the outer edge portion are configured with a double structure by a double row needle, and the intermediate element mounting portion is the core. Similarly, a double tricot knitting structure with double row needles is knitted so as to surround the material.

  Moreover, according to the said patent document 2, while knitting a tape main-body part with the single structure | tissue only of the needle | hook of the surface side or a back surface side, an element attachment part is arrange | positioned at the core material and the two knitting yarns on both sides thereof. A double chain stitch structure knitted by a stripe, a weft insertion structure by a weft insertion thread inserted while being symmetrically swung between the stitches of the chain stitch structure on the front and back, a tricot knitting structure, a chain knitting structure and a normal And a weft insertion structure constituting a part of the structure of the tape main part. The double chain stitch structure and the weft insertion yarn of the element mounting part are alternately knitted on the front side and the back side of the tape main part, respectively, so that the element mounting part is formed in a substantially complete rectangular cross section.

  In a fastener tape for a slide fastener made of this type of warp knitting structure, the tape main part is formed as a single structure by a single-row needle or a double structure by a double-row needle as described above. In any case, the element mounting portion is knitted so as to surround a core material extending in the longitudinal direction with a double warp knitting structure by a double row needle, and the element mounting portion is formed in a thicker bulge shape than the tape main portion. It is common.

On the other hand, it has also been proposed to use a warp knitting machine composed of a single needle bed to knit the tape main portion and the element mounting portion with a single structure by a single row needle while knitting the core string. For example, according to Japanese Examined Patent Publication No. 54-218171 (Patent Document 3), two core strings are vertically stacked on the fastener tape surface between two wales on the outer edge of the element attachment portion of the fastener tape. Is woven over the entire length. Weft insertion yarns are inserted into the two wales on the outer edge, and two tightening wefts for the core string are inserted in a weft-like manner from opposite directions. The two weft insertion yarns have a marquette structure and are inserted so that they do not overlap each other between the wales. The weft insertion thread inserted into the two wales is passed between the core cords that are stacked one above the other, the tightening weft runs on the upper surface of the upper core string, and the other tightening weft is the lower one The two core strings are fixed from both the upper and lower surfaces by passing through the lower surface of the core string and using these three kinds of weft insertion threads. The two wales at the end edge and the marquisette knitting yarn which is a tightening weft are configured so that the turning points of the wales do not overlap each other, and a uniform thickness is obtained over the entire length.
Japanese Utility Model Publication No. 56-16088 JP-A-8-56713 Japanese Patent Publication No.54-21781

  As described above, in general, when the enormous portion of the element mounting portion is connected to the tape main portion and integrally warped, it is knitted by a double-row needle knitting machine having front and rear needles and hooks. And in order to knit the element attachment part in which a core string is knitted, the core string is supplied to the middle of a double row needle.

  When the tape main body is knitted in a double structure with a double row needle in the same manner as the element mounting portion, the tape can be knitted so as to be symmetrical with the front and back surfaces. It can arrange | position on the straight line of the longitudinal direction passing through the end surface center of one end edge, and the enormous part in the front and back of an element attachment part can also be formed symmetrically. On the other hand, in recent years, many slide fasteners are attached to various kinds of flexible clothing, and the flexibility of the fastener tape itself is strongly required. However, when the tape main body is knitted in a double structure as described above, the tape main body becomes thicker and the rigidity is increased, and the flexibility expected of the knitted fabric may be lost.

  On the other hand, when the tape main body is knitted with a single tissue using only one needle row of the double row needles, it is natural that the fastener tape of the first embodiment disclosed in the above-mentioned Patent Document 2 has the above. Even if one side edge of the tape main body is knitted by a double structure as disclosed in the second embodiment of Patent Document 2, the core string is from the end surface center of the one end edge of the tape main body. It will be knitted while being displaced to the other side of the double row needle. As a result, the enormous part of the element mounting part is inevitably displaced to the other side, and when the element is planted, the element cannot be planted evenly on the center plane of the end edge of the fastener tape, and the slider Various problems such as the inability to smoothly perform the sliding operation occur.

  By the way, in the knitting by the double row needle, even if only one needle row of the double row needle is used, only half the stitches can be formed in the same knitting time as compared with the single row needle, and the operation efficiency is remarkably high. Will be reduced. In that respect, in the knitting of the fastener tape disclosed in Patent Document 3, the knitting efficiency is twice as high because the knitting is performed by a single structure composed of a single floor over the entire fastener tape. At the same time as the knitting of the tape, one or two core strings are knitted so as to overlap the front and back with the tape sandwiched, so the enormous part obtained by covering the core string with the tightening weft is symmetric, Enables uniform planting. In particular, when two core strings are knitted, the enormous portion becomes larger and the attachment strength of the element is improved.

  However, in any of the above Patent Documents 1 to 3, when the core string is knitted into the end edge of the fastener tape, there is a gap between two adjacent needles forming two rows of wales on the end edge. Because it is narrow, the core string and the needle are likely to interfere with each other due to the large thickness of the core string, the core string is difficult to pass smoothly between the needles, and often comes into contact with the needle and breaks the needle. The only way to avoid this was to reduce the thickness of the core string.

  The object of the present invention is to knitting a core string of a necessary thickness without losing the original flexibility of the knitted fabric, and the enormous parts formed by the knitting of the core string swell evenly on the front and back of the tape. It is an object of the present invention to provide a warp knitted fastener tape manufacturing machine for efficiently manufacturing a fastener tape that enables uniform attachment of elements without breakage of a needle.

The object of the present invention is to provide a warp knitting tape for a slide fastener for continuously knitting a core string along one side edge of the tape at the same time as the knitting of a tape comprising a warp knitting structure, which is the main configuration of the present invention. A single needle bed which is a manufacturing machine and guides a large number of knitting needles arranged in parallel in a row so as to be slidable along respective sliding grooves , and a knitting yarn guide which performs swinging and shogging operations When a first core thread guide for guiding a core thread, Ri na and a second core thread guide arranged in the weaving path of the core thread guiding a core thread in knitting opening of the needle bed, the The first core cord guide groove formed on the surface of the knitting mouth portion on the opposite side to the sliding groove of the needle bed and the first material of the plate material arranged along the surface of the knitting mouth portion. warp knitted fastener tape comprising a second core thread guide groove formed to face the core thread guide groove, characterized in that It is efficiently attained by the production machine.

In the present invention, the case where the first guide for the core string includes a single guide for guiding one core string is naturally included. However, according to a preferred aspect, the first guide for the core string is included. A guide is comprised from a pair of guide which each guides two core strings .

Effect

  The warp knitted fastener tape of the present invention uses a single-floor warp knitting machine to knit the fastener tape with a single structure, and a core string is knitted into a part of the ground structure along one side edge of the fastener tape. . Since a knitting speed approximately twice that of a knitting by a multi-floor type warp knitting machine can be obtained, high production efficiency is obtained. Regardless of whether the number of core cords is one or two, the knitted part forms a huge portion that bulges evenly on both the front and back sides, so the element is biased to either the front or back with respect to the fastener tape There is no, and the element can be mounted in a uniform manner.

  In addition, in the present invention, in addition to the normal core string guide, a second core string guide for guiding the core string while suppressing free movement of the core string is provided on the knitting path of the core string in the knitting portion. Therefore, the core string can pass smoothly without interfering with the needle adjacent to the knitting path of the core string, and the needle is not broken.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be specifically described with reference to the illustrated examples.
1 and 2 are perspective views showing the formation of fastener element rows and the knitting operation of main parts by a machine for producing warp knitted fastener tape T according to the first embodiment of the present invention. In this embodiment, the main body of the manufacturing machine is a normal vertical floor single raschel machine, a crochet knitting machine, or a tricot knitting machine. Therefore, details of the mechanism are not shown.

  In these drawings, reference numeral 1 denotes a needle for accommodating a large number of knitting needles (hereinafter referred to as needles) 2 arranged in parallel in a straight line in the length direction so as to be slidable vertically along each sliding groove 1a. The floor 3 is a knitting yarn for ground texture, and 4 is a knitting yarn guide that introduces each knitting yarn 3 into the corresponding needle 2 and performs a swing operation and a shogging operation for forming a stitch. Here, the needle bed 1, each needle 2, and the knitting yarn guide 4 are members normally provided in this type of Raschel machine, and are not members specific to the present invention. Further, the operating members of the needle 2 and the knitting yarn guide 4 are connected to a driving source (not shown) and operate in synchronism with predetermined timing. In this embodiment, the needle 2 and the knitting yarn guide 4 are arranged symmetrically with respect to the center of the needle bed 1, and a pair of left and right fastener tapes T is manufactured by one knitting.

  Reference numerals 5 and 6 are a pair of first core string guides for guiding the two core strings 7 and 8, and these core string guides 5 and 6 are formed of a cylindrical body. Referring to FIG. In order to introduce the two core cords 7 and 8 into the knitting opening between the first wale W1 at the leftmost edge of T and the second wale W2 adjacent to the same wale W1, it is arranged above and behind each needle 2. ing. Here, the core string is one of the constituent members unique to the fastener tape T. A number of elements are attached along one side edge of the fastener tape T. When the element is attached by sewing, or by attaching a metal element by caulking, the tape side edge is simultaneously formed with the element. Or a single filament (monofilament) made of a synthetic resin material formed into a spiral shape or a zigzag shape at the same time while knitting or weaving a fastener tape. The core string is particularly effective when a metal element is attached by caulking and when a synthetic resin element is molded and integrated.

  When an element is attached to the fastener tape T by caulking or molding, if the element attachment portion is formed in a simple sheet shape like the fastener tape body, the required attachment is achieved by simply caulking the metal or molding and integrating the synthetic resin. Strength cannot be obtained. When the element is engaged with the tape edge enlarged by the core string during the caulking or molding, a required mounting strength can be obtained. Therefore, this core string is a component unique to the fastener tape T, and is an unnecessary member for ordinary tapes. Further, it is necessary to accurately introduce the core string at a predetermined position of the knitting opening. Therefore, when the core string is knitted into the fastener tape, the guide for the core string is necessary as described above.

  Conventionally, the core string is generally composed of one piece. In this embodiment, the two core strings 7 and 8 guided by the pair of first core string guides 5 and 6 are arranged on the front and back of the fastener tape T. And is knitted into the element mounting portion of the tape T. However, the present invention naturally includes a case where one core string is guided by one core string guide and knitted into the element attaching portion of the fastener tape. In the present embodiment, between the pair of first core string guides 5 and 6, a first part of the ground structure knitted by running in the course direction on the first and second wales W1 and W2 is formed. A second knitting yarn guide 4b for guiding the second knitting yarn 3b is arranged. In the present embodiment, the first knitting yarn 3d forming the first wale W1 and constituting the ground texture is a 1-0 / 0-1 chain knitting yarn, and the second knitting yarn 3a is 0-. It is a 0 / 4-4 weft insertion thread. A satin knitting yarn (1-0 / 3-4) may be used instead of the weft insertion yarn.

  Between the first needle 2a and the second needle 2b, the two core cords 7 and 8 guided by the pair of first core cord guides 5 and 6 form a loop of the first wale W1 and the second wale W2. If the lace is simply introduced into the knitting opening, the core strings 7 and 8 interfere with the first needle 2a and / or the second needle 2b so that the core strings 7 and 8 cannot pass smoothly. The needle 2a or the second needle 2b may be broken.

  Therefore, in the present embodiment, a second core string guide 9 is provided which is a characteristic part of the present invention for smoothly introducing and guiding the core strings 7 and 8 to the knitting opening. The second core string guide 9 is a surface opposite to the surface of the needle bed 1 on which the sliding groove 1a of each needle 2 is formed, and is intermediate between the first and second needles 2a and 2b. The first core string guide groove 1b formed in the part and the plate material 10 provided to be opposed to each other with an interval through which the fastener tape T knitted in the intermediate part can pass. A second core string guide groove 10a having the same shape as the first core string guide groove 1b is formed in a portion of the plate 10 facing the first core string guide groove 1b. The 1st and 2nd core string guide grooves 1b and 10a are formed in order to guide linearly along the braided path of the core strings 7 and 8, ie, the core strings 7 and 8 knitted into the fastener tape T. . Each of the first and second core string guide grooves 1b and 10a has a semicircular cross section.

  The first core string guide groove 1b is provided with a first core string 7 guided by a first core string guide 5 disposed on the rear side of the pair of first core string guides 5 and 6, and the second core string guide groove 1b. A second core string 8 guided by a second core string guide 6 disposed forward of the pair of first core string guides 5 and 6 is introduced into the core string guide groove 10a.

  Further, in this embodiment, most of the needles 2 are needles for knitting the ground structure of the fastener tape T, and all the left and right sliding grooves 1a, 1a, The first, second, third,... Needles 2a, 2b, 2c,... Are accommodated in 1a,. In the example of illustration, the space | interval of the 1st needle 2a and the 2nd needle 2b is set to the space | interval sufficient for the said 1st and 2nd core string 7 and 8 to pass. Therefore, there is a possibility that the stitch density becomes coarse, and when trying to obtain a desired stitch density, for example, a material having high heat shrinkage should be adopted for the weft insertion yarn inserted into the portion where the stitch density becomes coarse. Can be solved.

  The knitting yarn guides 4a, 4b, 4c,... Disposed above the needle bed 1 correspond to the knitting yarns 3a, 2b, 2c,... According to the vertical movements of the needles 2a, 2b, 2c,. .. Swings between the needles 2a, 2b, 2c,... So as to wrap 3b, 3c,. By wrapping the knitting yarn guides 4a, 4b, 4c,... And vertically moving the needles 2a, 2b, 2c,..., The knitting yarns 3a, 3b,. 3c,... Are introduced to form respective stitches.

  FIG. 3 shows an example of a fastener tape manufactured by a fastener tape manufacturing machine having the above-described configuration. According to the illustrated example, the first wale W1 includes a chain knitting yarn 3d (0-1 / 1-0), a first tricot knitting yarn 3b (0-1 / 2-3), and a second tricot knitting yarn 3c (2 -3 / 1-0) and the first weft insertion thread 3a (0-0 / 3-3). The second wale W2 includes a chain knitting yarn 3d (0-1 / 1-0), a first tricot knitting yarn 3b (0-1 / 2-3), and a second tricot knitting yarn 3c (2-3 / 1- 0) and the second weft insertion thread 3e (0-0 / 4-4). The third and fourth wales W3 and W4 are respectively a chain knitting yarn 3d (0-1 / 1-0), a second weft insertion yarn 3e (0-0 / 4-4), and a second tricot knitting yarn 3c. (2-3 / 1-0). The first to fourth wales W1 to W4 serve as element mounting portions A (not shown).

  The fifth to ninth wales W5 to W9 are formed by the second tricot knitting yarn 3c (2-3 / 1-0) and the second weft insertion yarn 3e (0-0 / 4-4). The tenth to twelfth wales are the chain knitting yarn 3d (0-1 / 1-0), the second tricot knitting yarn 3c (2-3 / 1-0), and the second weft insertion yarn 3e (0-0 / 4-4). The fifth to twelfth wals W5 to W12 form a tape main body B, and the tenth to twelfth wales thereof are ear portions BE. Here, among the knitting yarns constituting each of the wales W1 to W12, the same reference numerals are given to the knitting yarns having the same structure, but the chain knitting yarns are all different knitting yarns. Are partly common knitting yarns, but the remaining wales are partly different knitting yarns.

  The first and second core strings 7 and 8 are inserted through the wale between the first wale W1 and the second wale W2. Specifically, the first core string 7 is inserted between the sinker loop of the second tricot knitting yarn 3c and the first weft insertion thread 3a, and the second core string 8 is inserted between the first weft insertion thread 3a and the first weft insertion thread 3a. It is inserted between the sinker loop of one tricot knitting yarn 3b. In other words, the first core string 7 and the second core string 8 are fastened by the second tricot knitting yarn 3c and the first tricot knitting yarn 3b with the first weft insertion yarn 3a interposed therebetween, and the element attachment of the fastener tape T is performed. It is knitted along the outer edge of the part A.

  At this time, the first and second core strings 7 and 8 are guided by the pair of first core string guides 5 and 6, respectively, and the needle bed 1 and the plate material 10 between the first needle 2 a and the second needle 2 b are arranged. The first core string guide groove 1b and the second core string guide groove 10a, which are second core string guides formed in the knitting opening, are introduced so as to overlap in the front-rear direction. At this time, the first core string 7 and the second core string 8 introduced into the first core string guide groove 1b and the second core string guide groove 10a provided in a relative manner change in the string interval and the string position. It is always stably guided in a state where it overlaps the front and back. As a result, the first and second core cords 7 and 8 are opposed to each other with the first weft insertion thread 3a that is a part of the ground structure interposed therebetween, and are knitted between the first and second needles 2a and 2b. Are fastened by the sinker loops of the first and second tricot knitting yarns 3b and 3c, and bulges evenly on the front and rear sides along the outer edge of the element mounting portion A of the fastener tape T. A huge portion C is formed. Due to the enormous portion C having an equal size, the mounting strength of elements to be mounted thereafter is improved.

  FIG. 4 shows an apparatus for manufacturing a fastener tape T according to a second embodiment of the present invention. The difference from the first embodiment is that the first embodiment is a part of the second core string guide. Since the plate 10 is composed of a single plate, the plate 10 is supported and fixed by a support member (not shown), and a pair of left and right fastener tapes T are connected simultaneously with a connection knitting yarn (not shown), for example. In contrast to the single plate material 10, two first and second plate materials 11 a and 11 b are directly supported at the central portion of the needle bed 1, while the knitting can be performed. In this embodiment, a pair of left and right fastener tapes T are knitted independently. The second core string guide groove 11c formed in the first and second plate members 11a and 11b is formed to be opposed to the first core string guide groove 1b formed in the needle bed 1.

  By the way, whether it is in the said 1st Embodiment or this embodiment so that one core string can pass easily through the space | interval between the 1st needle 2a and the 2nd needle 2b as mentioned above. Since the distance is set to be twice as wide as the interval between the other needles, the stitch density between the first wale W1 and the second wale W2 becomes coarse. Therefore, in this embodiment, it is preferable to use a high shrinkage yarn for the chain knitting yarn 3d of the first wale W1 and the first weft insertion yarn 3a running between the first to third wales W1. At this time, the degree of shrinkage is preferably 12 to 24%. Further, the thickness of the first and second tricot knitting yarns 3b and 3c knitted between the first and second wales W1 and W2 for fixing the first and second core cords 7 and 8 is set to other knitting. If the thread 3a, 3d, 3e is 1 to 3 times thicker than the yarns 3a, 3d, 3e, the enormous part is further increased, and the mounting strength of the element is significantly increased.

It is a fragmentary perspective view in the knitting part of the single floor type Russell warp knitting machine which shows a 1st embodiment of the warp knitting fastener tape manufacturing machine of the present invention roughly. It is a side view of the manufacturing machine. It is a partial top view which shows typically an example of the knitting structure of the warp knitting fastener tape knitted by the said manufacturing machine. It is a fragmentary perspective view in the knitting mouth part of the single floor type Russell warp knitting machine which shows a 2nd embodiment of the warp knitting fastener tape manufacturing machine of the present invention roughly.

Explanation of symbols

1 Needle bed 1a Sliding groove 1b First core string guide groove 2 Knitting needle (needle)
2a, 2b, 2c, ... 1st, 2nd, 3rd needle ...
3 Knitting yarns 3a, 3e First and second weft insertion yarns 3b, 3c First and second tricot knitting yarns 3d Chain knitting yarns 4 Knitting yarn guides 4a, 4b, ... First and second knitting yarn guides ...
5, 6 1st core string guide 7, 8 1st and 2nd core string 9 2nd core string guide 10 Plate material 10a, 11c 2nd core string guide groove 11a, 11b 1st and 2nd plate material T Fastener tape A Element attachment Part B Tape main part BE Ear part C Enormous part W1-W12 1st to 12th wales

Claims (3)

A machine for producing a warp knitting tape for a slide fastener for continuously knitting a core string along one side edge of the tape simultaneously with the knitting of a tape composed of a warp knitting structure,
Swing and shogging motions with a single needle bed (1) that slidably guides a large number of knitting needles (2) arranged in parallel in a row along each sliding groove (1a) Knitting of the knitting yarn guide (4), the first core string guide (5, 6) for guiding the core string (7, 8), and the core string (7, 8) at the knitting opening of the needle bed (1) is arranged to write road Ri name and a second core thread guide for guiding the core thread (7, 8) (9),
The second core string guide (9) has a first core string guide groove (1b) formed on the surface of the knitting mouth portion opposite to the sliding groove (1a) of the needle bed (1) and the knitting opening. A second core string guide groove (10a, 11c) formed to face the first core string guide groove (1b) of the plate material (10, 11a, 11b) arranged along the surface of the section. Become,
A warp knitted fastener tape making machine.   The warp knitted fastener tape manufacturing machine according to claim 1, wherein the first core string guide (5, 6) comprises a single guide for guiding one core string (7, 8).   The warp knitted fastener tape manufacturing machine according to claim 1, wherein the first core string guide (5, 6) includes a pair of guides for guiding the two core strings (7, 8).

Images