EP3387940B1 - Production method for stringer for woven slide fasteners and production device - Google Patents
Production method for stringer for woven slide fasteners and production device Download PDFInfo
- Publication number
- EP3387940B1 EP3387940B1 EP15910251.6A EP15910251A EP3387940B1 EP 3387940 B1 EP3387940 B1 EP 3387940B1 EP 15910251 A EP15910251 A EP 15910251A EP 3387940 B1 EP3387940 B1 EP 3387940B1
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- European Patent Office
- Prior art keywords
- width direction
- knitting
- guide
- stringer
- pair
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- 238000004519 manufacturing process Methods 0.000 title claims description 85
- 238000009940 knitting Methods 0.000 claims description 128
- 230000033001 locomotion Effects 0.000 claims description 72
- 238000000034 method Methods 0.000 claims description 10
- 238000005192 partition Methods 0.000 description 25
- 125000006850 spacer group Chemical group 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 238000003825 pressing Methods 0.000 description 8
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 235000014676 Phragmites communis Nutrition 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 230000002950 deficient Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
- A44B19/00—Slide fasteners
- A44B19/42—Making by processes not fully provided for in one other class, e.g. B21D53/50, B21F45/18, B22D17/16, B29D5/00
- A44B19/52—Securing the interlocking members to stringer tapes while making the latter
- A44B19/56—Securing the interlocking members to stringer tapes while making the latter while knitting the stringer tapes
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B21/14—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B23/00—Flat warp knitting machines
- D04B23/14—Flat warp knitting machines with provision for incorporating small auxiliary elements, e.g. for decorative purposes
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2501/00—Wearing apparel
- D10B2501/06—Details of garments
- D10B2501/063—Fasteners
- D10B2501/0631—Slide fasteners
Definitions
- the present invention relates to a method and device for producing a stringer for a knitted slide fastener, in which when a fastener tape is knitted, a linear monofilament is bent in a coil shape to form an element row, thereby producing a stringer having the element row knitted in one side edge portion of the fastener tape.
- Patent Documents 1 and 2 disclose methods and devices for producing a plurality of stringers at a time using spirally or helically pre-shaped coupling elements.
- one stringer for a knitted slide fastener can be stably and efficiently produced.
- the post processes are complicated. Therefore, there is a problem that a knitted slide fastener cannot be efficiently produced. That is, the knitted slide fastener, which is an actual product, has two stringers and a slider for engaging and disengaging the two stringers. Thus, in the case where only one stringer is produced, the knitted slide fastener cannot be efficiently produced.
- the post processes such as a process of conveying two stringers to the same site or a process of engaging element rows of the two stringers to form a chain, are complicated.
- the present invention has been made keeping in mind the above problems, and an object thereof is to more efficiently produce a knitted slide fastener.
- a method of producing a stringer for a knitted slide fastener according to the present invention is a method for producing a stringer for a knitted slide fastener having a coil-shaped element row knitted in one side edge portion of a knitted fastener tape and includes, when knitting element rows, respectively, into fastener tapes by cooperatively performing a swing operation and shogging operation of a plurality of guide needles and a reciprocating operation of a plurality of knitting needles, cooperatively performing a reciprocating operation, in a knitting width direction, of two guides, which are juxtaposed with each other in the knitting width direction to deliver linear monofilaments, and a reciprocating operation of two hooks, which are juxtaposed with each other in the knitting width direction to move between a position, at which the hooks are respectively wound with the monofilaments, and a position, at which the hooks are separated from the monofilaments, so that the monofilaments are bent in a coil shape to form the respective element rows, thereby producing as one chain production
- a device for producing a stringer for a knitted slide fastener according to the present invention includes a stringer production parts for producing a stringer for a knitted slide fastener having a coil-shaped element row knitted in one side edge portion of a knitted fastener tape.
- the stringer production part includes a needle bed having a plurality of needle grooves; a plurality of knitting needles guided in the plurality of needle grooves; a plurality of guide needles for threading knitting yarns for the fastener tape; a guide allowing a linear monofilament to pass therethrough; and a hook configured to be wound with the monofilament; a hook movement device for moving the hook between a position, at which the hook is wound with the monofilament, and a position, at which the hook is separated from the monofilament; a guide movement device for reciprocatingly moving the guide in a knitting width direction, so that the monofilament is bent at the one side edge portion of the fastener tape and thus forms the element row.
- a plurality of chain production units which each is constituted of two stringer production parts juxtaposed with each other in the knitting width direction, are arranged to be juxtaposed with each other in the knitting width direction.
- the plurality of guides and the plurality of hooks in the chain production unit are symmetrically arranged in pair in the knitting width direction, thereby producing two stringers in a symmetric state where the element rows oppose each other.
- sets of two stringers can be produced by the number of chain production units. Then, it is easy to make two stringers into one chain, and as a result, it is possible to efficiently produce a knitted slide fastener.
- the guides and the hooks in the chain production unit are symmetrically arranged in pair in the knitting width direction, two stringers are produced in a symmetric state where the element rows oppose each other. Then, it is easy to make two stringers into one chain.
- An apparatus for producing a chain for a knitted slide fastener is configured to produce a plurality of sets of two stringers by a plurality of knitting yarns and a plurality of linear monofilaments and then to produce one chain from each set of two stringers.
- the stringer 90 has a knitted fastener tape 91 having a predetermined length and width and a coil-shaped element row 95 knitted in one side edge portion of the fastener tape 91 in a width direction thereof. Also, in the stringer 90, a part of the fastener tape 91 and the element row 95 exist on an element row side 90a of the entire widthwise length thereof, and the other part of the fastener tape 91 exists on a side of the entire widthwise length opposite to the element row side 90a, i.e., a non-element row side 90b thereof.
- the element row 95 is made of resin and also has a coil shape having a plurality of turns. Also, one turn of the coil shape is referred to as an element portion 95a.
- the element portion 95a has an engaging head portion 95b configured to be engaged with an element portion 95a of another element row 95; a pair of leg portions 95c, 95c extending from both lengthwise ends of the engaging head portion 95b in a width direction of the fastener tape 91; and a folded-back portion 95d formed by folding back an end of one leg portion 95c opposite to the engaging head portion 95b to be connected to one leg portion 95c of the another element row 95.
- the fastener tape 91 which is warp-knitted, has, as knitting yarns 92, chain stitch yarns 92a, tricot knitting yarns 92b and weft insertion yarns 92c and is formed by forming a plurality of juxtaposed wales by the chain stitch yarns 92a, knitting the tricot knitting yarns 92b into the adjacent wales and then knitting the weft insertion yarns 92c into a predetermined number of wales.
- the element row 95 is fixed on the fastener tape 91 by causing chain stitch yarns 92a on both sides thereof in a thickness direction to sandwich the pair of leg portions 95c, 95c of the element portions 95a over the entire length of the element row 95.
- the chain 97 is formed by engaging two stringers 90, 90 with each other using engaging head portions 95b, 95b thereof.
- the apparatus for producing a chain for a knitted slide fastener includes a knitting yarn supply device 1 for supplying knitting yarns 92; a monofilament supply device 2 for supplying monofilaments 94; a stringer production device 3 for producing a plurality of (in the present embodiment, an even number of) stringers 90 using the knitting yarns 92 and the monofilaments 94 supplied from the knitting yarn supply device 1 and the monofilament supply device 2; a plurality of engagement devices 4, 4...
- a main body of the stringer production device 3 is a knitting machine for warp knitting, such as a single raschel machine or a double raschel machine, and in the present embodiment, is configured as the single raschel machine. Further, the stringer production device 3 has a plurality of stringer production parts 3a for producing stringers 90 and a driving shaft 3b for synchronously driving all the stringer production parts 3a.
- all the stringer production parts 3a are juxtaposed with each other in a width direction of the stringer production device 3.
- two stringer production parts 3a adjacent to each other in the width direction of the stringer production device 3 constitute one chain production unit and thus are configured to produce two stringers 90 to be used for producing one chain 97.
- the stringer production device 3 has ten stringer production parts 3a in total and thus the ten stringer production parts 3a constitute five chain production units.
- Two stringer production parts 3a, 3a of each of the chain production units are symmetrically arranged in the width direction of the stringer production device 3.
- the stringer production parts 3a includes a needle bed 30 having a plurality of needle grooves 30a; a plurality of knitting needles configured to reciprocate along the plurality of needle grooves 30a and to emerge from and retract into the needle bed 30; a knitting needle movement device 31a for reciprocating the plurality of knitting needles 31; a guide needle 32 for threading a knitting yarn; a guide needle movement device 32a for causing the guide needle 32 to perform a predetermined operation; a plurality of sinkers 33 for pressing one end of a stringer; a sinker movement device 33a for reciprocating the sinkers 33; a guide 34 for guiding a linear monofilament; a guide movement device 35 for guiding the guide 34 to bend the monofilament at one side edge portion of the fastener tape and thus to form a coil-shaped element row; a hook 38 configured to be wound with the monofilament; a hook movement device 39 for moving the hook 38 between a position, at which the hook 38 is wound
- the guide 34, the hook 38, the knitting needle movement device 31a, the guide movement device 35 and the hook movement device 39 are arranged on one side of the needle bed 30 in a depth direction of the needle grooves 30a (in a thickness direction of the needle bed 30) (more specifically, to be oriented from an inner side of the needle grooves 30a toward an inlet thereof).
- the sinkers 33 and the sinker movement device 33a are arranged on the other side of the needle bed 30 in the depth direction of the needle grooves 30a (more specifically, to be oriented from the inlet of the needle grooves 30a toward the inner side thereof).
- the guide needle movement device 32a is arranged on a side of the needle bed 30, at which the knitting needles 31 protrude through the needle grooves 30a, respectively.
- the needle bed 30 is a flat plate having a predetermined transversal width, longitudinal width and thickness, and on one surface thereof in a thickness direction, the plurality of needle grooves 30a extending in a longitudinal width direction thereof are formed at predetermined intervals in a transversal width direction. Also, the plurality of needle grooves 30a are configured to reciprocatingly guide the knitting needles 31, respectively, thereby causing the knitting needles 31 to protrude from one of both surfaces, in the longitudinal width direction, of the needle bed 30.
- One of both surfaces, in the longitudinal width direction, of the needle bed 30, on which the knitting needles 31 protrude, is referred to as a needle protruding surface 30b.
- the knitting needles 31 are, for example, latch needles, and an opening direction thereof is set to the front direction.
- the guide needle 32 has a hole 32b, into which the knitting yarn 92 is to be threaded. Further, the guide needle 32 is divided into uses for chain stitching, tricot knitting and a weft insertion yarn. A plurality of guide needles 32 are juxtaposed with each other in the knitting width direction for each of the uses and are fixed on a guide needle bar 32c. On the guide needle bar 32c, the guide needle movement device 32a is fixed to form predetermined stitches.
- a guide needle movement device for chain stitching is configured to cause the guide needle 32 to perform a shogging operation (an operation in which the guide needle 32 moves in the knitting width direction) and a swing operation (an operation in which the guide needle 32 moves in the front and rear direction), thereby causing a chain stitch yarn to be wound one turn around the knitting needle 31.
- a guide needle movement device for a weft insertion yarn is configured to cause the guide needle 32 to perform a shogging operation at the rear of the knitting needle 31, thereby knitting a weft insertion yarn into a predetermined number of wales formed by the chain stitch yarns.
- the guide 34 is a cylinder and, as shown in Figs. 2 to 5 , is arranged such that a direction, through which the cylinder extends, is oriented in the front and rear direction. Also, two guides 34, 34 of one chain production unit are symmetrically arranged in the knitting width direction with a space interposed therebetween. In addition, as shown in Fig. 9 , the guide 34 is configured to allow the monofilament 94 to extend therethrough and thus to deliver the monofilament 94.
- the guide movement device 35 has a guide shaft 35a extending in the knitting width direction and a linkage 35b connected to the guide shaft 35a and configured to fix the guide 34.
- the guide shaft 35a is configured to drive at least two guide movement devices 35, 35 of the chain production unit in common. Also, the guide shaft 35a is swingably supported on a frame (not shown) of the stringer production device and connected to the driving shaft via the transmission mechanism.
- the linkage 35b has a plurality of links and a plurality of connection portions, in order to convert a swing motion of the guide shaft 35a to a reciprocating motion, in the knitting width direction, of the guide 34.
- the linkage 35b has three links 36a, 36b, 36c, two connection portions 37a, 37b each configured to connect two of the three links 36a, 36b, 36c with each other, and a support shaft 37j for swingably supporting one of the three links 36a, 36b, 36c.
- the three links 36a, 36b, 36c are referred to as first, second and third links 36a, 36b, 36c in the order from the guide shaft 35a toward the guide 34, and the two connection portions 37a, 37b are referred to as first and second connection portions 37a, 37b in the order from the guide shaft 35a toward the guide 34.
- the first link 36a extends radially outward from the guide shaft 35a and is configured such that one end thereof in a length direction is fixed on the guide shaft 35a. Specifically, in the example of Figs. 4 and 5 , the first link 36a is arranged such that the length direction thereof corresponds to the height direction and a lower end thereof is fixed on the guide shaft 35a. Also, the first link 36a is configured to convert a swing motion of the guide shaft 35a over a predetermined angular range to a swing motion (reciprocating motion), in the front and rear direction, of an upper end thereof, which is a distal portion of the first link 36a. Further, the first link 36a is common to two guide movement devices 35, 35 of the chain production unit.
- two linkages 35b, 35b of the two guide movement devices 35, 35 are symmetrically arranged with respect to an imaginary center line L1 equally dividing the first link 36a in the knitting width direction and also extending in the front and rear direction.
- the second link 36b is arranged such that a length direction thereof corresponds to the front and rear direction.
- the first connection portion 37a is configured to connect a front end portion of the second link 36b with the upper end of the first link 36a. Also, the first connection portion 37a is a lower pair, such as turning pair or spherical pair, and is configured to transmit the reciprocating motion of the distal portion of the first link 36a in the front and rear direction to the second link 36b as a reciprocating motion thereof in the front and rear direction. Meanwhile, two first connection portions 37a, 37a of the chain production unit are respectively arranged on both outer sides, in the knitting width direction, of the first link 36a.
- the third link 36c has an L-shape as viewed in the height direction. More specifically, the third link 36c has a fixing piece 36d extending in the front and rear direction and configured to fix the guide 34 and a connecting piece 36e extending in the knitting width direction and connected to the second connection portion 37b.
- the fixing piece 36d and the connecting piece 36e are jointed to each other at one end thereof in a right-angled bent shape.
- a portion, where the fixing piece 36d and the connecting piece 36e are jointed to each other, is referred to as a bent portion.
- an end portion of both end portions of each of the fixing piece 36d and the connecting piece 36e away from the bent portion is referred as to a distal portion.
- the bent portion has a positional relationship that the bent portion is positioned closer to the imaginary center line L1 than is the distal portion of the connecting piece 36e.
- the fixing piece 36d has a plate-shaped fixing piece main body 36h extending in the front and rear direction, and a stepped portion 36i protruding in a stepped shape from a distal portion of the fixing piece main body 36h in the upward direction, which is one side of the height direction.
- the stepped portion 36i is fixed while extending through the guide 34 in the front and rear direction.
- the support shaft 37j extends through the bent portion of the third link 36c in the height direction and a part thereof in the height direction is fixed on the frame (not shown) of the stringer production device. Also, the support shaft 37j is configured to swingably support the third link 36c about the bent portion.
- the second connection portion 37b is configured to connect a rear end portion of the second link 36b with the distal portion of the connecting piece 36e of the third link 36c.
- the second connection portion 37b is a lower pair, such as turning pair or spherical pair, and is configured to transmit the reciprocating motion of the second link 36b in the front and rear direction to the connecting piece 36e of the third link 36c as a swing motion thereof in the front and rear direction.
- the second connection portion 37b is arranged above the distal portion of the connecting piece 36e of the third link 36c.
- the two linkages 35b, 35b of the chain production unit are configured to transmit movement of the guide shaft 35a to the guide 34 in the following manner:
- the two guide movement devices 35, 35 of the chain production unit can reciprocate the pair of guides 34, 34 by means of the common guide shaft 35a. Therefore, as compared with a case where each of guides 34 is reciprocated by separate guide shafts, the pair of element rows 95, 95 and hence the pair of stringers 90, 90 can be efficiently produced and also the number of components of the stringer production device 3 can be reduced. Also, since the two guide movement devices 35, 35 use the common first link 36a, the number of components of the stringer production device 3 can be reduced and also a dimension thereof in the knitting width direction can be shortened. Further, the fixing piece 36d of the third link 36c is positioned closer to the imaginary center line L1 than is the distal portion of the second connection portion 37b.
- the two guides 34, 34 of the chain production unit are positioned close to each other in the knitting width direction, so that a dimension, in the knitting width direction, of the two guide movement devices 35, 35 of the chain production unit can be shortened.
- the hook 38 has a rod-shaped portion 38a linearly extending in the front and rear direction and a hooking portion 38b connected to a distal portion of the rod-shaped portion 38a, which is a rear end portion thereof, and configured to hook the monofilament.
- the hooking portion 38b is configured to be bent from a distal end of the rod-shaped portion 38a toward the needle protruding surface 30b and also to be folded back toward a front end of the rod-shaped portion 38a.
- the hook movement device 39 is configured to drive at least two stringer production parts 3a, 3a of the chain production unit in common and has a hook shaft 39a extending in the knitting width direction and an arm 39b extending radially outward from the hook shaft 39a and also toward above the needle protruding surface 30b.
- the hook shaft 39a is rotatably supported on the frame of the knitting machine and is positioned between the needle bed 30 and the guide shaft 35a in the front and rear direction and also positioned to be spaced upward from the linkage 35b in the height direction.
- the arm 39b extends in the front and rear direction and is configured such that a front end portion thereof, which is a distal portion, is fixed on the hook shaft 39a and also both side surfaces thereof in the knitting width direction, which are a rear end portion, are formed as a pair of attaching portions 39c, 39c for attaching two hooks 38, 38 of the chain production unit. Also, the center of the arm 39b and the center of two guide movement devices 35, 35 of the chain production unit are configured to be positioned on the imaginary center line L1 as viewed in the height direction.
- the pair of hooks 38, 38 are symmetrically arranged in the knitting width direction, namely with respect to the imaginary center line L1. Further, the pair of hooks 38, 38 oppose each other to be close to each other in the knitting width direction, and a distance therebetween is narrower than a width of the fastener tape 91.
- the common hook movement device 39 as described above is configured such that if the hook shaft 39a is swung, the distal portion of the arm 39b is swung in the height direction about the hook shaft 39a and also the pair of hooks 38, 38 is swung in the height direction above the needle protruding surface 30b. Also, the common hook movement device 39 can reciprocate the pair of hooks 38, 38 by means of the single hook shaft 39a. Therefore, as compared with a case where each of hooks is reciprocated by separate hook shafts, the pair of element rows 95, 95 and hence the pair of stringers 90, 90 can be efficiently produced and also the number of components of the stringer production device 3 can be reduced.
- the sinkers 33 are a flat plate extending in the front and rear direction and arranged such that a thickness direction thereof coincides with the knitting width direction. Also, the plurality of sinkers 33 are juxtaposed with each other while being spaced from each other in the knitting width direction, and rear portions thereof are fixed on a sinker bar 33b. The plurality of sinkers 33 fixed on the sinker bar 33b is referred to as a sinker row.
- the sinker row is configured to reciprocate in the front and rear direction, and a range of reciprocating movement thereof is between a position, where the sinker row is spaced rearward from the needle protruding surface 30b, and a position, where the sinker row is positioned above the needle protruding surface 30b and also suppresses the stringer 90.
- the stringer production part 3a is configured such that the plurality of sinkers 33, 33..., the plurality of knitting needles 31, 31..., the hook 38 and the guide 34 are arranged not to be in contact with each other.
- the more details are as follows. In a case where the sinker row is advanced as shown in Fig. 8 , as viewed in the height direction, a front end portion of each sinker 33, which is a distal portion, is positioned above the needle protruding surface 30b and also between the adjacent knitting needles 31, 31, i.e., between the adjacent needle grooves 30a, 30a.
- the hook 38 and the guide 34 are positioned between the adjacent knitting needles 31, 31 and also on both outer sides, in the knitting width direction, of a predetermined number of knitting needles (in the figure, two knitting needles 31, 31).
- the predetermined number of knitting needles 31 are intended to wind a knitting yarn for fixing the element row and thus hereinafter referred to as "fixing knitting needles". No knitting needles 31 are received in two needle grooves 30a, 30a respectively at both sides of two fixing knitting needles 31 in the knitting width direction.
- the needle grooves 30a are formed in the needle bed 30 at equal intervals in the knitting width direction, and the knitting needles 31 are received in the remaining needle grooves 30a, except the above two needle grooves 30a, 30a.
- the sinker 33 is arranged to move in and out between the two fixing knitting needles 31, 31, one side, in the knitting width direction, of the two fixing knitting needles 31, 31 (a side where the engaging head portion 95b of the element portion 95a is formed) is set as a position for the hook 38, and upper sides of the needle grooves 30a, 30a on both sides, in the knitting width direction, of the two fixing knitting needles 31, 31 and the hook 38 are set as limit positions of reciprocating movement of the guide.
- the guide 7 is a left limit position and a one-dot chain line is a right limit position.
- the guide is reciprocated in the knitting width direction.
- the guide 34 is positioned at the left limit position.
- two sinkers 33 of the sinker row are close to the hook 38 on both sides of the knitting width direction.
- the sinker row is configured such that at locations other than a location thereon corresponding to the hook 38, sinkers 33 are arranged to be spaced from each other at equal intervals in the knitting width direction, and also a distance between sinkers 33, 33 respectively at both sides of the location corresponding to the hook 38 is set to two or more times the equal intervals, thereby preventing contact between the sinkers 33 and the hook 38.
- the sinker movement device 33a has a sinker shaft 33c extending in the knitting width direction and a sinker reed 33d configured to swing in the front and rear direction about the sinker shaft 33c.
- the sinker shaft 33c is rotatably supported on the frame of the knitting machine.
- the sinker reed 33d extends in the knitting width direction and also in the height direction. Also, as viewed in the knitting width direction, the sinker reed 33d is configured such that the sinker bar 33b is fixed on an upper end portion thereof in the height direction while protruding forward and also the sinker row is oriented toward above the needle protruding surface 30b.
- the sinker movement device 33a of the above configuration can position the distal portion of the sinker row above or away from the needle protruding surface 30b by swing the sinker reed 33d over a predetermined angular range about the sinker shaft. Also, the sinker movement device 33a is arranged in the rear of the needle bed 30 and also the guide movement device 35 and the hook movement device 39 are arranged in front of the needle bed 30. Therefore, as compared with a case where installation sites of the guide movement device 35, the hook movement device 39 and the sinker movement device 33a are positioned on the same side in front or rear of the needle bed 30, it is easy to install each of the movement devices. Also, it is easy to arrange the sinkers 33 to prevent the sinkers 33 from coming in contact with the hook 38 or the guide 34.
- the two stringer production parts 3a, 3a of the chain production unit as described above are operated in the following manner.
- the transmission mechanism is also operated so that each of the movement devices for the knitting needles, the guide needles, the sinkers, the hooks and the guides is operated.
- the knitting needles 31, the guide needles 32, the sinkers 33, the hook 38 and the guide 34 move in the order of (1) to (6) below.
- sinkers 33 in the vicinity of the elements and also chain stitch yarns 92a and knitting needles for wales closest to the elements are omitted for easy viewing of the operation situation in the vicinity of the elements.
- two stringers 90 can be simultaneously symmetrically produced while being juxtaposed with each other in the knitting width direction.
- each of the chain production units can knit two stringers 90 and thus a plurality of stringers 90 can be efficiently produced.
- sets of two stringers 90 can be produced by the number corresponding to the number of chain production units.
- the sinkers 33 since one end of the stringers 90 in the length direction is pressed by the sinkers 33, the exterior appearance of the stringers 90 is enhanced.
- two sinkers 33, 33 are respectively positioned on both sides of each hook 38. Therefore, as compared with a case where a sinker is positioned only on one of both sides of a hook, locations, at which the stringers 90 are pressed, are increased, thereby stabilizing knitting of the stringers 90.
- the engagement device 4 has a guide path 40 provided as a space portion therein and configured to allow a pair of stringers 90 to pass therethrough.
- the guide path 40 has two inlets 40a spaced from each other in a width direction thereof and one outlet 40b.
- a width direction means a width direction of the guide path 40 corresponding to a right and left direction in Fig. 19 and thus is also referred to as a right and left direction.
- a length direction means a length direction of the guide path 40 and corresponds to an upward and downward direction in Fig. 19 .
- an inlet direction means a direction from the outlet 40b toward the inlets 40a of the guide path 40 in the length direction and corresponds to a downward direction in the figure.
- An outlet direction means a direction from the inlets 40a toward the outlet 40b of the guide path 40 in the length direction and corresponds to an upward direction in the figure.
- a height direction means a height direction of the guide path 40 corresponding to a direction normal to the paper surface of Fig. 19 and thus is also referred to as an upward and downward direction.
- An upward direction means a direction toward the front side in the normal direction and a downward direction is a direction toward the back side relative to the pater surface in the normal direction.
- the width direction corresponds to the knitting width direction with respect to the description of the stringer production device 3
- the length direction corresponds to the front and rear direction with respect to the description of the stringer production device 3
- the height direction corresponds to the height direction with respect to the description of the stringer production device 3.
- the engagement device 4 is symmetric in the width direction and, as components for forming the guide path 40, includes first and second base plate portions 50, 60 opposing each other in the height direction with a space interposed therebetween so that a pair of stringers 90 juxtaposed with each other in the width direction can be guided on both sides in a thickness direction thereof; a partition portion 65 for partitioning the space between the first and second base plate portions 50, 60 at the middle thereof in the width direction, which is located on the side of the inlets 40a in the length direction, wherein partition portion 65 is configured to guide both inner sides, in the width direction, of a pair of element rows 95, 95 disengaged from each other; a pressing portion 70 for pressing a middle part, in the width direction, of the first base plate portion 50, which are divided into three parts in the width direction, toward the second base plate portion 60; a pair of outside protrusions 52, 52 protruding from the first base plate portion 50 to narrow a distance between the first and second base plate portions
- the second base plate portion 60 is a rectangular flat plate and is arranged such that a thickness direction thereof coincides with the height direction. Also, the second base plate portion 60 has an upper surface formed as a flat surface in the right and left direction and the front and rear direction and is configured to guide lower surfaces, in the height direction, of the pair of stringers 90. Meanwhile, in the shown example, the second base plate portion 60 is fixed on a frame (not shown) by bolts.
- the second center protrusion 61 is configured to protrude from the middle, in the width direction, of the upper surface of the second base plate portion 60 and also to extend over the entire length of an inlet side, in the length direction, of the second base plate portion 60. Also, the second center protrusion 61 has such a shape that a width thereof gradually narrows upward. Meanwhile, the second base plate portion 60 and the second center protrusion 61 constitute a single piece base member 62.
- the first base plate portion 50 has a pair of side base plate portions 51, 51 arranged to be spaced from each other in the width direction, and a center base plate portion 56 arranged to be sandwiched between the pair of side base plate portions 51, 51.
- the pair of side base plate portions 51, 51 and the center base plate portion 56 are separate pieces
- the center base plate portion 56, the partition portion 65 and the first center protrusion 59 constitute a single-piece center member 55
- the side base plate portions 51, the spacer portions 53 and the outside protrusions 52 which are located on the same side in the width direction, constitute single-piece blade members 54, respectively.
- the pair of blade members 54, 54 are fixed on the second base plate portion 60 to be spaced from each other in a width direction of the second base plate portion 60, and the center member 55 is arranged on the second base plate portion 60 and also configured to be movably guided between the pair of blade members 54, 54 in the height direction.
- the pair of side base plate portions 51, 51 has a pair of inner end surfaces 51a, 51a opposing each other in the width direction.
- the pair of inner end surfaces 51a, 51a extends in the length direction and has a pair of parallel surfaces 51b, 51b parallel to each other in the length direction on an outlet side thereof in the length direction and a pair of inclined surfaces 51c, 51c inclined with respect to the length direction on an inlet side thereof in the length direction.
- a distance between the pair of inner end surfaces 51a, 51a is constant on the pair of parallel surfaces 51b, 51b, but on the pair of inclined surfaces 51c, 51c, is gradually widened as it goes away from the pair of parallel surfaces 51b, 51b in the inlet direction.
- each side base plate portion 51 which is located on the side of the inner end surface 5 1a, is referred to as an inner edge portion, and the other edge portion opposite thereto is referred to as an outer edge portion.
- the side base plate portion 51 is a skewed hexagonal plate as viewed in the height direction and is configured such that a lengthwise dimension thereof is the same as that of the second base plate portion 60 and a widthwise dimension thereof is shorter than a half of a width of the second base plate portion 60. More specifically, the hexagon of the side base plate portion 51 has such a shape that two corner portions on an inlet side of a rectangle having two sides parallel to the length direction and the width direction are obliquely cut off.
- the center base plate portion 56 is a flat plate thicker than a thickness of the pair of side base plate portions 51, 51 and has a center parallel portion 57 arranged between the pair of parallel surfaces 51b, 51b and a center inclined portion 58 extending from the center parallel portion 57 toward the inlets 40a and arranged between the pair of inclined surfaces 5 1c, 51c.
- the center parallel portion 57 has a rectangular shape linearly extending in the length direction as viewed in the height direction.
- the first center protrusion 59 protrudes from the middle, in the width direction, of a lower surface of the center parallel portion 57, toward the second base plate portion 60 and extends over the entire length of the center parallel portion 57 in the length direction.
- center parallel portion 57 and the first center protrusion 59 have lower surfaces formed as a flat surface in the front and direction and the right and left direction and are configured to guide a pair of leg portions 95c, 95c of the pair of element rows 95, 95 in an engaged state on an upper side thereof in the height direction.
- the lower surfaces of the center parallel portion 57 and the first center protrusion 59 oppose upper surfaces of the second base plate portion 60 and the second center protrusion 61.
- the first and second center protrusions 59, 61 are configured to narrow a distance between the first and second base plate portions 50, 60 in the height direction and also to guide a pair of engaging head portions 95b, 95b of the pair of element rows 95, 95 in the engaged state.
- the center inclined portion 58 has a triangular shape as viewed in the height direction and thus is configured such that a width thereof gradually narrows toward the inlet direction. Also, the center inclined portion 58 has a lower surface (a surface thereof opposing the second base plate portion 60) formed as a flat surface in the right and left direction and the front and rear direction, and the partition portion 65 protrudes downward from the middle, in the width direction, of the flat surface. Thus, the lower surface of the center inclined portion 58 is exposed to both sides of the partition portion 65 in the width direction and is configured to guide the engaging head portions 95b of the pair of element rows 95, 95 in the disengaged state on an upper side thereof in the height direction.
- the partition portion 65 has a triangular shape smaller than the center inclined portion 58 as viewed in the height direction and is configured such that a width thereof gradually narrows toward the inlet direction. Also, both surfaces of the partition portion 65 in the width direction are configured to guide the pair of engaging head portions 95b of the pair of element rows 95, 95 in the disengaged state on both inner sides thereof in the width direction.
- the outside protrusion 52 protrudes downward from the inner edge portion of the lower surface of the side base plate portion 51 and is configured to narrow a distance between the side base plate portion 51 and the second base plate portion 60.
- a protrusion length of the outside protrusion 52 is set such that a distance between the outside protrusion 52 and the second base plate portion 60 in the height direction has substantially the same dimension as a thickness of the fastener tape 91 and the fastener tape 91 is allowed to pass between the outside protrusion 52 and the second base plate portion 60.
- the outside protrusion 52 extends along a part of the inner edge portion of the side base plate portion 51, which corresponds to the inclined surface 51c, and one end thereof in the extending direction is located at one inlet 40a of the guide path 40 and the other end in the extending direction is located on the parallel surface 51b of the inner edge portion of the side base plate portion 51.
- a distance between the pair of outside protrusions 52, 52 in the width direction gradually narrows as it goes from the inlets 40a toward the outlet 40b.
- the partition portion 65 exists between the pair of outside protrusions 52, 52 on the inlet side of the guide path 40, and a distance between each of the outside protrusions 52 and the partition portion 65 is set to be slightly larger than a width of the element row 95.
- a distance between the pair of outside protrusions 52, 52 is set to have a dimension suitable for allowing the pair of element rows 95, 95 to be engaged with each other.
- the outside protrusion 52 is arranged more outside than the inclined surface 51c of the inner end surface 5 1a in the width direction and is spaced therefrom in the outlet direction. Therefore, the lower surfaces of the pair of side base plate portions 51, 51 are provided in a state where parts thereof located more inside than the pair of outside protrusions 52, 52 in the width direction oppose the second base plate portion 60 and thus is configured to guide an outer surface, in the width direction, of the folded-back portion 95d of the pair of leg portions 95c, 95c of the element rows 95. Meanwhile, according to the present embodiment, as shown in an enlarged portion of Fig.
- the parts of the lower surfaces of the pair of side base plate portions 51, 51, which are located more inside than the pair of outside protrusions 52, 52 in the width direction, are positioned at a location higher than a lower surface of the center inclined portion 58 of the center base plate portion 56.
- the spacer portion 53 protrudes downward from the outer edge portion, in the width direction, of the lower surface of the side base plate portion 51.
- the inner end surface 51a, in the width direction, of the spacer portion 53 is inclined inward in the width direction toward the outlet 40b side, in the length direction, of the side base plate portion 51.
- a distance between the pair of spacer portions 53, 53 in the width direction gradually narrows toward the outlet direction.
- the blade member 54 is fixed on the second base plate portion 60 by a bolt B1 extending through the spacer portion 53 and the side base plate portion 60 in the height direction.
- the pressing portion 70 has a rod 71 extending through the center member 55 in the height direction; a fixing portion for fixing one end portion (lower end portion) of the rod 71 on the second base plate portion 60; a compressive coil spring 73 as a spring for pressing the center member 55 against the second base plate portion 60 while surrounding an outer circumference of the rod 71; and a pushing member 74 fixed on the other end portion (upper end portion) of the rod 71 and configured to push the compressive coil spring 73.
- the rod 71 is a round rod. Also, a through-hole 55a, which allow the rod 71 to extend therethrough, is formed to penetrate the center inclined portion 58 and the partition portion 65 of the center member 55.
- the through-hole 55a is formed to be slightly larger than a diameter of the rod 71, and thus the center member 55 can move along the rod 71 in the height direction.
- the fixing portion 72 has a fixing hole 60 penetrating a part of the second base plate portion 60, which comes in contact with the partition portion 65, in the height direction and also allowing the rod 71 to pass therethrough; a retaining hole 71a penetrating a part of the rod 71, which is located below the second base plate portion 60, in a direction perpendicular to the height direction; and a retaining pin 71p inserted in the retaining hole 71 in such a manner that both end portions thereof protrude from the retaining hole 71a.
- the fixing portion 72 has a groove portion 60s extending over the entire height of an end surface on the inlet 40a side of the second base plate portion 60 and thus communicated with the fixing hole 60h.
- the entire length of the groove portion 60s in the width direction is set to be larger than a diameter of the retaining pin 7 1p.
- the pushing member 74 has a pushing body 75, through which the rod 71 passes in such a shape that the pushing body 75 protrudes from the rod 71 in a collar shape, and a male screw 76 for fixing the pushing body 75 to the rod 71.
- the pushing body 75 is of a circular disk shape and has a through-hole 75a formed on the center portion thereof to allow the rod 71 to pass therethrough, and female screw holes 75b formed at a plurality of sites on an outer circumferential surface thereof and configured to be communicated with the through-hole 75a and also to allow the male screw 76 to be screwed therein.
- the pushing member 74 and the fixing portion 72 are respectively fixed on both end portions of the rod 71, the center member 55 and the compressive coil spring 73 are arranged between the fixing portion 72 and the pushing member 74 with the rod 71 passing through them, and the compressive coil spring 73 is in a compressed state.
- a restoring force acts on the compressive coil spring 73 so that the partition portion 65 of the center member 55 is pressed against the second base plate portion 60.
- the engagement device 4 as described above is configured to engage a pair of element rows 95, 95 of two stringers 90, 90 in the order of (1) to (5) below.
- a height of the element row sides 90a of the stringers 90 passing through the guide path 40 is smaller than a height of the guide path 40 (more specifically, a distance between the lower surfaces of the center base plate portion 56 and the pair of side base plate portions 51, 51 and the upper surface of the second base plate portion 60 between the pair of outside protrusions 52, 52 and the partition portion 65).
- a height of the element row side 90a is likely to be partially higher than the height of the guide path 40, namely the stringer are likely to be defective.
- the element row side 90a lift the center member 55 against the restoring force of the compressive coil spring 73, so that the compressive coil spring 73 is further compressed and thus a dimension of the guide path 40 in the height direction is widened, thereby preventing the element row side 90a from being jammed in the guide path 40.
- Chains 97 produced by all the engagement devices 4 are wound by the winding device 5.
- two stringers 90, 90 can be made into one chain 97.
- the engagement device 4 is particularly suitable for using in a production line for a knitted slide fastener, but may be used as an engagement device for fasteners of coil types other than the knitted slide fastener.
- the apparatus for producing a chain for a knitted slide fastener is not limited to the foregoing embodiments.
- the stringer production device 3 is configured such that the guide shaft 35a and the first link 36a of the guide movement device 35 and the hook shaft 39a and the arm 39b of the hook movement device 39 are common to two stringer production parts 3a, 3a of each of the chain production units, the present invention is not limited thereto.
- the guide movement device 35 and the hook movement device 39 may be equipped in each of the stringer production parts 3a, or only the guide shaft 35a of the guide movement device 35 and the hook shaft 39a of the hook movement device 39 may be common to a plurality of stringer production parts 3a.
- the engagement device 4 has the pair of spacer portions 53, 53, but the engagement device 4 may have no pair of spacer portions 53, 53.
- the first base plate portion 50 has the pair of side base plate portions 51, 51 and the center base plate portions 56, which are integrated with each other, and the center base plate portion 56 is fixed on the second base plate portion 60 via the partition portion 65.
- the engagement device 4 has the pressing portion 70
- the present invention is not limited thereto.
- the center member 55 is immovable relative to the second base plate portion 60 in the height direction.
- the center member 55 may be fixed on the second base plate portion 60 or may be fixed on at least one of the side base plate portions 51.
- the engagement device 4 is configured such that the first base plate portion 50 is divided into three parts, i.e., the pair of side base plate portions 51, 51 and the center base plate portion 56, the present invention is not limited thereto.
- the first base plate portion 50 may be configured such that the pair of side base plate portions 51, 51 and the center base plate portion 56 are integrated with each other.
- the engagement device 4 is configured such that the partition portion 65 is a part of the center member 55 and the center member 55 including the partition portion 65 is movable relative to the pair of side base plate portions 51, 51 in the height direction, the present invention is not limited thereto.
- the partition portion 65 may be provided as a separate member from the center member 55 and the partition portion 65 may be integrated with the second base plate portion 60.
- the engagement device 4 is configured such that the fixing portion 72 uses the retaining pin 71p, the present invention is not limited thereto.
- the fixing portion 72 may use other fixing means, such as a screw pair, which allows the second base plate portion 60 and the rod 71 to be screwed to each other.
- the engagement device 4 has the first and second center protrusions 59, 61, but the engagement device 4 may have no first and second center protrusions 59, 61.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Knitting Machines (AREA)
- Slide Fasteners (AREA)
- Knitting Of Fabric (AREA)
Description
- The present invention relates to a method and device for producing a stringer for a knitted slide fastener, in which when a fastener tape is knitted, a linear monofilament is bent in a coil shape to form an element row, thereby producing a stringer having the element row knitted in one side edge portion of the fastener tape.
- The method of producing a stringer for a knitted slide fastener as described above is disclosed from
Patent Documents 1 and 2 as described below.Patent Documents -
- Patent Document 1:
Japanese Patent Application Publication No. H10-042916A - Patent Document 2:
WO 2015/097830 - Patent Document 3:
FR 2188976 A1 - Patent Document 4:
US 4137733 A - According to the methods described in the
above Patent Documents 1 and 2, one stringer for a knitted slide fastener can be stably and efficiently produced. However, if only one stringer is continuously produced as described in these patent documents, the post processes are complicated. Therefore, there is a problem that a knitted slide fastener cannot be efficiently produced. That is, the knitted slide fastener, which is an actual product, has two stringers and a slider for engaging and disengaging the two stringers. Thus, in the case where only one stringer is produced, the knitted slide fastener cannot be efficiently produced. For example, the post processes, such as a process of conveying two stringers to the same site or a process of engaging element rows of the two stringers to form a chain, are complicated. - The present invention has been made keeping in mind the above problems, and an object thereof is to more efficiently produce a knitted slide fastener.
- A method of producing a stringer for a knitted slide fastener according to the present invention is a method for producing a stringer for a knitted slide fastener having a coil-shaped element row knitted in one side edge portion of a knitted fastener tape and includes, when knitting element rows, respectively, into fastener tapes by cooperatively performing a swing operation and shogging operation of a plurality of guide needles and a reciprocating operation of a plurality of knitting needles, cooperatively performing a reciprocating operation, in a knitting width direction, of two guides, which are juxtaposed with each other in the knitting width direction to deliver linear monofilaments, and a reciprocating operation of two hooks, which are juxtaposed with each other in the knitting width direction to move between a position, at which the hooks are respectively wound with the monofilaments, and a position, at which the hooks are separated from the monofilaments, so that the monofilaments are bent in a coil shape to form the respective element rows, thereby producing as one chain production unit a set of two stringers, which each have the element row knitted in the one side edge portion of the fastener tape, wherein a plurality of sets of stringers are produced to be juxtaposed with each other by juxtaposing a plurality of chain production units with each other in the knitting width direction.
- A device for producing a stringer for a knitted slide fastener according to the present invention includes a stringer production parts for producing a stringer for a knitted slide fastener having a coil-shaped element row knitted in one side edge portion of a knitted fastener tape. Also, the stringer production part includes a needle bed having a plurality of needle grooves; a plurality of knitting needles guided in the plurality of needle grooves; a plurality of guide needles for threading knitting yarns for the fastener tape; a guide allowing a linear monofilament to pass therethrough; and a hook configured to be wound with the monofilament; a hook movement device for moving the hook between a position, at which the hook is wound with the monofilament, and a position, at which the hook is separated from the monofilament; a guide movement device for reciprocatingly moving the guide in a knitting width direction, so that the monofilament is bent at the one side edge portion of the fastener tape and thus forms the element row. Further, a plurality of chain production units, which each is constituted of two stringer production parts juxtaposed with each other in the knitting width direction, are arranged to be juxtaposed with each other in the knitting width direction.
- In order to easily engage the element rows with each other and thus to easily make two stringers into one chain, according to the invention, the plurality of guides and the plurality of hooks in the chain production unit are symmetrically arranged in pair in the knitting width direction, thereby producing two stringers in a symmetric state where the element rows oppose each other.
- According to the present invention, sets of two stringers can be produced by the number of chain production units. Then, it is easy to make two stringers into one chain, and as a result, it is possible to efficiently produce a knitted slide fastener.
- Also, as the guides and the hooks in the chain production unit are symmetrically arranged in pair in the knitting width direction, two stringers are produced in a symmetric state where the element rows oppose each other. Then, it is easy to make two stringers into one chain.
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Fig. 1 is a block diagram showing an apparatus for producing a chain for a knitted slide fastener according to a first embodiment. -
Fig. 2 is a plan view showing a stringer production device. -
Fig. 3 is a side view showing the stringer production device. -
Fig. 4 is a plan view of a guide movement device. -
Fig. 5 is a side view of the guide movement device. -
Fig. 6 is a plan view showing a part of a stringer. -
Fig. 7 is a diagram showing a state where sinkers are separated from a needle bed. -
Fig. 8 is a diagram showing a state where the sinkers are close to the needle bed. -
Fig. 9 is a diagram showing a state where a hook is separated from an element portion and a guide is positioned on a folded-back portion side of the element portion. -
Fig. 10 is a diagram showing a state where the hook is separated from the element portion and the guide is positioned on an engaging head portion side of the element portion. -
Fig. 11 is a diagram showing a state where the hook presses a monofilament. -
Fig. 12 is a diagram showing a state where the monofilament is wound around the hook and the guide is positioned on the folded-back portion side. -
Fig. 13 is a diagram showing a state where knitting needles are lifted while the sinkers press one end of a stringer. -
Fig. 14 is a front view of an engagement device. -
Fig. 15 is a rear view of the engagement device. -
Fig. 16 is a plan view of the engagement device. -
Fig. 17 is a sectional view taken along a line XVII-XVII inFig. 16 and a partially enlarged sectional view thereof. -
Fig. 18 is a sectional view taken along a line XVIII-XVIII inFig. 16 . -
Fig. 19 is a plan view showing a state where the engagement device is used. -
Fig. 20 is a sectional view taken along a line XX-XX inFig. 19 . -
Fig. 21 is a sectional view taken along a line XXI-XXI inFig. 19 . - An apparatus for producing a chain for a knitted slide fastener according to a first embodiment is configured to produce a plurality of sets of two stringers by a plurality of knitting yarns and a plurality of linear monofilaments and then to produce one chain from each set of two stringers.
- As shown in
Fig. 19 , thestringer 90 has a knittedfastener tape 91 having a predetermined length and width and a coil-shapedelement row 95 knitted in one side edge portion of thefastener tape 91 in a width direction thereof. Also, in thestringer 90, a part of thefastener tape 91 and theelement row 95 exist on anelement row side 90a of the entire widthwise length thereof, and the other part of thefastener tape 91 exists on a side of the entire widthwise length opposite to theelement row side 90a, i.e., anon-element row side 90b thereof. - The
element row 95 is made of resin and also has a coil shape having a plurality of turns. Also, one turn of the coil shape is referred to as anelement portion 95a. - As shown in
Fig. 6 , theelement portion 95a has an engaginghead portion 95b configured to be engaged with anelement portion 95a of anotherelement row 95; a pair ofleg portions head portion 95b in a width direction of thefastener tape 91; and a folded-back portion 95d formed by folding back an end of oneleg portion 95c opposite to the engaginghead portion 95b to be connected to oneleg portion 95c of the anotherelement row 95. - The
fastener tape 91, which is warp-knitted, has, asknitting yarns 92, chain stitch yarns 92a, tricot knitting yarns 92b and weft insertion yarns 92c and is formed by forming a plurality of juxtaposed wales by the chain stitch yarns 92a, knitting the tricot knitting yarns 92b into the adjacent wales and then knitting the weft insertion yarns 92c into a predetermined number of wales. Also, theelement row 95 is fixed on thefastener tape 91 by causing chain stitch yarns 92a on both sides thereof in a thickness direction to sandwich the pair ofleg portions element portions 95a over the entire length of theelement row 95. - As shown in
Fig. 19 , thechain 97 is formed by engaging twostringers engaging head portions - As shown in
Fig. 1 , the apparatus for producing a chain for a knitted slide fastener according to the first embodiment includes a knitting yarn supply device 1 for supplyingknitting yarns 92; amonofilament supply device 2 for supplyingmonofilaments 94; astringer production device 3 for producing a plurality of (in the present embodiment, an even number of)stringers 90 using theknitting yarns 92 and themonofilaments 94 supplied from the knitting yarn supply device 1 and themonofilament supply device 2; a plurality ofengagement devices stringers 90 produced by thestringer production device 3 and thus producingchains 97, of which the number corresponds to half of the even number; and awinding device 5 for winding a plurality ofchains engagement devices - A main body of the
stringer production device 3 is a knitting machine for warp knitting, such as a single raschel machine or a double raschel machine, and in the present embodiment, is configured as the single raschel machine. Further, thestringer production device 3 has a plurality of stringerproduction parts 3a for producingstringers 90 and adriving shaft 3b for synchronously driving all thestringer production parts 3a. - As shown in
Fig. 2 , all thestringer production parts 3a are juxtaposed with each other in a width direction of thestringer production device 3. Also, twostringer production parts 3a adjacent to each other in the width direction of thestringer production device 3 constitute one chain production unit and thus are configured to produce twostringers 90 to be used for producing onechain 97. InFig. 2 , thestringer production device 3 has tenstringer production parts 3a in total and thus the tenstringer production parts 3a constitute five chain production units. Twostringer production parts stringer production device 3. - As shown in
Fig. 3 or7 , the stringer production parts 3a includes a needle bed 30 having a plurality of needle grooves 30a; a plurality of knitting needles configured to reciprocate along the plurality of needle grooves 30a and to emerge from and retract into the needle bed 30; a knitting needle movement device 31a for reciprocating the plurality of knitting needles 31; a guide needle 32 for threading a knitting yarn; a guide needle movement device 32a for causing the guide needle 32 to perform a predetermined operation; a plurality of sinkers 33 for pressing one end of a stringer; a sinker movement device 33a for reciprocating the sinkers 33; a guide 34 for guiding a linear monofilament; a guide movement device 35 for guiding the guide 34 to bend the monofilament at one side edge portion of the fastener tape and thus to form a coil-shaped element row; a hook 38 configured to be wound with the monofilament; a hook movement device 39 for moving the hook 38 between a position, at which the hook 38 is wound with the monofilament, and a position, at which the hook 38 is separated from the monofilament; and a transmission mechanism (not shown) having cams, links and the like and configured to connect each of the movement devices 31a, 32a, 33a, 35, 38, 39 to a driving shaft. - Also, in the
stringer production parts 3a, theguide 34, thehook 38, the knittingneedle movement device 31a, theguide movement device 35 and thehook movement device 39 are arranged on one side of theneedle bed 30 in a depth direction of theneedle grooves 30a (in a thickness direction of the needle bed 30) (more specifically, to be oriented from an inner side of theneedle grooves 30a toward an inlet thereof). Further, thesinkers 33 and thesinker movement device 33a are arranged on the other side of theneedle bed 30 in the depth direction of theneedle grooves 30a (more specifically, to be oriented from the inlet of theneedle grooves 30a toward the inner side thereof). In addition, the guideneedle movement device 32a is arranged on a side of theneedle bed 30, at which theknitting needles 31 protrude through theneedle grooves 30a, respectively. - In this way, arrangement of the
guide 34, thehook 38, the knittingneedle movement device 31a, theguide movement device 35, thehook movement device 39 and arrangement of thesinkers 33 and thesinker movement device 33a are divided on both sides of theneedle bed 30 in the depth direction of theneedle grooves 30a, thereby facilitating arrangement of them. - The
needle bed 30 is a flat plate having a predetermined transversal width, longitudinal width and thickness, and on one surface thereof in a thickness direction, the plurality ofneedle grooves 30a extending in a longitudinal width direction thereof are formed at predetermined intervals in a transversal width direction. Also, the plurality ofneedle grooves 30a are configured to reciprocatingly guide theknitting needles 31, respectively, thereby causing theknitting needles 31 to protrude from one of both surfaces, in the longitudinal width direction, of theneedle bed 30. One of both surfaces, in the longitudinal width direction, of theneedle bed 30, on which theknitting needles 31 protrude, is referred to as aneedle protruding surface 30b. - Hereinafter, directions with respect to the description of the
stringer production device 3 are defined as in the following (1) to (3): - (1) A knitting width direction means the transversal width direction of the
needle bed 30, i.e., a width direction of the main body (knitting machine) of thestringer production device 3 and corresponds to a right and left direction inFig. 7 . - (2) A height direction means the longitudinal width direction of the
needle bed 30 and corresponds to a direction normal to the paper surface ofFig. 7 . An upward direction is a direction toward the front side in the normal direction and a downward direction is a direction toward the back side in the normal direction. - (3) A front and rear direction means the thickness direction of the
needle bed 30, i.e., the depth direction of theneedle grooves 30a. A front direction is a direction toward an inlet side of theneedle grooves 30a in the depth direction, and a rear direction is a direction toward a bottom side of theneedle grooves 30a in the depth direction of theneedle grooves 30a. - The knitting needles 31 are, for example, latch needles, and an opening direction thereof is set to the front direction.
- As shown in
Fig. 3 , theguide needle 32 has a hole 32b, into which theknitting yarn 92 is to be threaded. Further, theguide needle 32 is divided into uses for chain stitching, tricot knitting and a weft insertion yarn. A plurality of guide needles 32 are juxtaposed with each other in the knitting width direction for each of the uses and are fixed on aguide needle bar 32c. On theguide needle bar 32c, the guideneedle movement device 32a is fixed to form predetermined stitches. - For example, a guide needle movement device for chain stitching is configured to cause the
guide needle 32 to perform a shogging operation (an operation in which theguide needle 32 moves in the knitting width direction) and a swing operation (an operation in which theguide needle 32 moves in the front and rear direction), thereby causing a chain stitch yarn to be wound one turn around theknitting needle 31. Also, a guide needle movement device for a weft insertion yarn is configured to cause theguide needle 32 to perform a shogging operation at the rear of theknitting needle 31, thereby knitting a weft insertion yarn into a predetermined number of wales formed by the chain stitch yarns. - The
guide 34 is a cylinder and, as shown inFigs. 2 to 5 , is arranged such that a direction, through which the cylinder extends, is oriented in the front and rear direction. Also, twoguides Fig. 9 , theguide 34 is configured to allow themonofilament 94 to extend therethrough and thus to deliver themonofilament 94. - The
guide movement device 35 has aguide shaft 35a extending in the knitting width direction and alinkage 35b connected to theguide shaft 35a and configured to fix theguide 34. - The
guide shaft 35a is configured to drive at least twoguide movement devices guide shaft 35a is swingably supported on a frame (not shown) of the stringer production device and connected to the driving shaft via the transmission mechanism. - The
linkage 35b has a plurality of links and a plurality of connection portions, in order to convert a swing motion of theguide shaft 35a to a reciprocating motion, in the knitting width direction, of theguide 34. In the example ofFigs. 4 and 5 , thelinkage 35b has threelinks connection portions links support shaft 37j for swingably supporting one of the threelinks links third links guide shaft 35a toward theguide 34, and the twoconnection portions second connection portions guide shaft 35a toward theguide 34. - The
first link 36a extends radially outward from theguide shaft 35a and is configured such that one end thereof in a length direction is fixed on theguide shaft 35a. Specifically, in the example ofFigs. 4 and 5 , thefirst link 36a is arranged such that the length direction thereof corresponds to the height direction and a lower end thereof is fixed on theguide shaft 35a. Also, thefirst link 36a is configured to convert a swing motion of theguide shaft 35a over a predetermined angular range to a swing motion (reciprocating motion), in the front and rear direction, of an upper end thereof, which is a distal portion of thefirst link 36a. Further, thefirst link 36a is common to twoguide movement devices linkages guide movement devices first link 36a in the knitting width direction and also extending in the front and rear direction. - The
second link 36b is arranged such that a length direction thereof corresponds to the front and rear direction. - The
first connection portion 37a is configured to connect a front end portion of thesecond link 36b with the upper end of thefirst link 36a. Also, thefirst connection portion 37a is a lower pair, such as turning pair or spherical pair, and is configured to transmit the reciprocating motion of the distal portion of thefirst link 36a in the front and rear direction to thesecond link 36b as a reciprocating motion thereof in the front and rear direction. Meanwhile, twofirst connection portions first link 36a. - The
third link 36c has an L-shape as viewed in the height direction. More specifically, thethird link 36c has afixing piece 36d extending in the front and rear direction and configured to fix theguide 34 and a connectingpiece 36e extending in the knitting width direction and connected to thesecond connection portion 37b. The fixingpiece 36d and the connectingpiece 36e are jointed to each other at one end thereof in a right-angled bent shape. A portion, where the fixingpiece 36d and the connectingpiece 36e are jointed to each other, is referred to as a bent portion. Also, an end portion of both end portions of each of the fixingpiece 36d and the connectingpiece 36e away from the bent portion is referred as to a distal portion. In addition, the bent portion has a positional relationship that the bent portion is positioned closer to the imaginary center line L1 than is the distal portion of the connectingpiece 36e. - The fixing
piece 36d has a plate-shaped fixing piecemain body 36h extending in the front and rear direction, and a steppedportion 36i protruding in a stepped shape from a distal portion of the fixing piecemain body 36h in the upward direction, which is one side of the height direction. The steppedportion 36i is fixed while extending through theguide 34 in the front and rear direction. - The
support shaft 37j extends through the bent portion of thethird link 36c in the height direction and a part thereof in the height direction is fixed on the frame (not shown) of the stringer production device. Also, thesupport shaft 37j is configured to swingably support thethird link 36c about the bent portion. - The
second connection portion 37b is configured to connect a rear end portion of thesecond link 36b with the distal portion of the connectingpiece 36e of thethird link 36c. Also, thesecond connection portion 37b is a lower pair, such as turning pair or spherical pair, and is configured to transmit the reciprocating motion of thesecond link 36b in the front and rear direction to the connectingpiece 36e of thethird link 36c as a swing motion thereof in the front and rear direction. Meanwhile, thesecond connection portion 37b is arranged above the distal portion of the connectingpiece 36e of thethird link 36c. - The two
linkages guide shaft 35a to theguide 34 in the following manner: - (1) If the driving shaft is driven, the
common guide shaft 35a is swung over the predetermined angular range via the transmission mechanism. - (2) As the
guide shaft 35a is swung, an upper portion of the commonfirst link 36a is swung in the front and rear direction about theguide shaft 35a. - (3) As the
first link 36a is swung, twosecond links second links - (4) As each
second link 36b is swung, thethird link 36c is swung about thesupport shaft 37j and also the distal portion of the fixingpiece 36d together with theguide 34 is swung in the knitting width direction. At this time, the twothird links 36c and the twoguides - The two
guide movement devices guides common guide shaft 35a. Therefore, as compared with a case where each of guides 34 is reciprocated by separate guide shafts, the pair ofelement rows stringers stringer production device 3 can be reduced. Also, since the twoguide movement devices first link 36a, the number of components of thestringer production device 3 can be reduced and also a dimension thereof in the knitting width direction can be shortened. Further, the fixingpiece 36d of thethird link 36c is positioned closer to the imaginary center line L1 than is the distal portion of thesecond connection portion 37b. Therefore, for example, as compared with a case where the fixingpiece 36d of thethird link 36c is positioned farther from the imaginary center line L1 than is the distal portion of thesecond connection portion 37b, the twoguides guide movement devices - As shown in
Figs. 7 and 8 , thehook 38 has a rod-shaped portion 38a linearly extending in the front and rear direction and a hookingportion 38b connected to a distal portion of the rod-shaped portion 38a, which is a rear end portion thereof, and configured to hook the monofilament. - As viewed in the knitting width direction, the hooking
portion 38b is configured to be bent from a distal end of the rod-shaped portion 38a toward theneedle protruding surface 30b and also to be folded back toward a front end of the rod-shaped portion 38a. - As shown in
Figs. 2 and3 , thehook movement device 39 is configured to drive at least twostringer production parts hook shaft 39a extending in the knitting width direction and anarm 39b extending radially outward from thehook shaft 39a and also toward above theneedle protruding surface 30b. - The
hook shaft 39a is rotatably supported on the frame of the knitting machine and is positioned between theneedle bed 30 and theguide shaft 35a in the front and rear direction and also positioned to be spaced upward from thelinkage 35b in the height direction. - The
arm 39b extends in the front and rear direction and is configured such that a front end portion thereof, which is a distal portion, is fixed on thehook shaft 39a and also both side surfaces thereof in the knitting width direction, which are a rear end portion, are formed as a pair of attachingportions hooks arm 39b and the center of twoguide movement devices hooks 38 are respectively fixed on the pair of attachingportions arm 39b, the pair ofhooks hooks fastener tape 91. - The common
hook movement device 39 as described above is configured such that if thehook shaft 39a is swung, the distal portion of thearm 39b is swung in the height direction about thehook shaft 39a and also the pair ofhooks needle protruding surface 30b. Also, the commonhook movement device 39 can reciprocate the pair ofhooks single hook shaft 39a. Therefore, as compared with a case where each of hooks is reciprocated by separate hook shafts, the pair ofelement rows stringers stringer production device 3 can be reduced. - As shown in
Figs. 3 ,7 and 8 , thesinkers 33 are a flat plate extending in the front and rear direction and arranged such that a thickness direction thereof coincides with the knitting width direction. Also, the plurality ofsinkers 33 are juxtaposed with each other while being spaced from each other in the knitting width direction, and rear portions thereof are fixed on asinker bar 33b. The plurality ofsinkers 33 fixed on thesinker bar 33b is referred to as a sinker row. The sinker row is configured to reciprocate in the front and rear direction, and a range of reciprocating movement thereof is between a position, where the sinker row is spaced rearward from theneedle protruding surface 30b, and a position, where the sinker row is positioned above theneedle protruding surface 30b and also suppresses thestringer 90. - Also the
stringer production part 3a is configured such that the plurality ofsinkers knitting needles hook 38 and theguide 34 are arranged not to be in contact with each other. The more details are as follows. In a case where the sinker row is advanced as shown inFig. 8 , as viewed in the height direction, a front end portion of eachsinker 33, which is a distal portion, is positioned above theneedle protruding surface 30b and also between theadjacent knitting needles adjacent needle grooves hook 38 and theguide 34 are positioned between theadjacent knitting needles knitting needles 31, 31). The predetermined number ofknitting needles 31 are intended to wind a knitting yarn for fixing the element row and thus hereinafter referred to as "fixing knitting needles". No knitting needles 31 are received in twoneedle grooves knitting needles 31 in the knitting width direction. On the other hand, theneedle grooves 30a are formed in theneedle bed 30 at equal intervals in the knitting width direction, and theknitting needles 31 are received in the remainingneedle grooves 30a, except the above twoneedle grooves sinker 33 is arranged to move in and out between the two fixingknitting needles knitting needles 31, 31 (a side where the engaginghead portion 95b of theelement portion 95a is formed) is set as a position for thehook 38, and upper sides of theneedle grooves knitting needles hook 38 are set as limit positions of reciprocating movement of the guide. A solid line of theguide 34 inFig. 7 is a left limit position and a one-dot chain line is a right limit position. In a case where the sinker row is retracted, the guide is reciprocated in the knitting width direction. Further, in the case where the sinker row is advanced as shown inFig. 8 , theguide 34 is positioned at the left limit position. Meanwhile, in the present embodiment, when the sinker row is advanced (when the sinker row presses one end of the stringer 90), twosinkers 33 of the sinker row are close to thehook 38 on both sides of the knitting width direction. Also, the sinker row is configured such that at locations other than a location thereon corresponding to thehook 38,sinkers 33 are arranged to be spaced from each other at equal intervals in the knitting width direction, and also a distance betweensinkers hook 38 is set to two or more times the equal intervals, thereby preventing contact between thesinkers 33 and thehook 38. - As shown in
Fig. 3 , thesinker movement device 33a has asinker shaft 33c extending in the knitting width direction and asinker reed 33d configured to swing in the front and rear direction about thesinker shaft 33c. - The
sinker shaft 33c is rotatably supported on the frame of the knitting machine. - The
sinker reed 33d extends in the knitting width direction and also in the height direction. Also, as viewed in the knitting width direction, thesinker reed 33d is configured such that thesinker bar 33b is fixed on an upper end portion thereof in the height direction while protruding forward and also the sinker row is oriented toward above theneedle protruding surface 30b. - The
sinker movement device 33a of the above configuration can position the distal portion of the sinker row above or away from theneedle protruding surface 30b by swing thesinker reed 33d over a predetermined angular range about the sinker shaft. Also, thesinker movement device 33a is arranged in the rear of theneedle bed 30 and also theguide movement device 35 and thehook movement device 39 are arranged in front of theneedle bed 30. Therefore, as compared with a case where installation sites of theguide movement device 35, thehook movement device 39 and thesinker movement device 33a are positioned on the same side in front or rear of theneedle bed 30, it is easy to install each of the movement devices. Also, it is easy to arrange thesinkers 33 to prevent thesinkers 33 from coming in contact with thehook 38 or theguide 34. - The two
stringer production parts - If a driving source is driven, the transmission mechanism is also operated so that each of the movement devices for the knitting needles, the guide needles, the sinkers, the hooks and the guides is operated. As a result, the
knitting needles 31, the guide needles 32, thesinkers 33, thehook 38 and theguide 34 move in the order of (1) to (6) below. Meanwhile, inFigs. 9 to 13 ,sinkers 33 in the vicinity of the elements and also chain stitch yarns 92a and knitting needles for wales closest to the elements are omitted for easy viewing of the operation situation in the vicinity of the elements. - (1) As shown in
Fig. 9 , theknitting needles 31 are fully retracted in therespective needle groves 30a and the hookingportion 38b of each of thehooks 38 is stopped at a position above and farthest away from theneedle protruding surface 30b. Also, the pair ofguides needle protruding surface 30b and thehooks 38 in the height direction and also are stopped at positions farthest away from each other in the knitting width direction. The stop position of each of thehooks 38 is a position is a position between theadjacent knitting needles back portion 95d of the respective elements. - (2) As shown in
Fig. 10 , each guide 34 moves toward the engaginghead portion 95b of the respective elements and then passes between therespective hooks 38 and theneedle protruding surface 30b in the height direction. Due to the movement, one of the pair ofleg portions stringer production parts 3a. Also, due to the movement, the pair ofguides 34 are closest to each other in the knitting width direction. - (3) As shown in
Fig. 11 , the pair ofhooks needle protruding surface 30b, and thus in each of thestringer production parts 3a, the hookingportion 38b presses theleg portion 95c in the vicinity of theguide 34. Also, in each of thestringer production parts 3a, thesinkers 33 start to move toward theneedle protruding surface 30b. - (4) The
guide 34 passes through the hookingportion 38b of thehook 38 and then moves toward the folded-back portion 95d. Then, as shown inFig. 12 , theguide 34 is stopped at the folded-back portion 95d. Due to the movement, theelement portion 95a is wound around thehook 38, and thus the engaginghead portion 95b and the other of the pair ofleg portions element portion 95a are formed in each of thestringer production parts 3a. Also, due to the movement, the pair ofguides 34 are farthest away from each other in the knitting width direction. - (5) As shown in
Fig. 13 , theknitting needles 31 reciprocate in the height direction to emerge from and retract into theneedle protruding surface 30b by a predetermined number of times, and for each time, the guide needles 32 perform a predetermined swing operation or shogging operation. As a result, a knitted fabric for thefastener tape 91 is formed by a predetermined number of courses. In this example, it is assumed that two courses corresponding toFig. 6 are formed. A knitted fabric corresponding to the two courses is a knitted fabric between theadjacent element portions leg portions element portion 95a into thefastener tape 91. Further, for each time, while theknitting needles 31 are lifted relative to theneedle protruding surface 30b, thesinkers 33 enter between theadjacent knitting needles element row side 90a and thenon-element row side 90b on one end of thestringer 90 in the length direction thereof are pressed by thesinkers 33. Thus, the knitted fabric is prevented from being lifted together with theknitting needles 31 as theknitting needles 31 are lifted. Also, after theknitting needles 31 reach a lifted position, thesinkers 33 start to move from above theneedle protruding surface 30b rearward, thereby preventing thesinkers 33 from coming in contact with the knitting yarns while theknitting needles 31 are lowered. - (6) Then, the pair of
hooks 38 moves upward and thus theelement portions 95a are separated from thehooks 38. As a result, the operation returns to the state of (1). - As the operation of (1) to (6) as described above is repeated, two
stringers 90 can be simultaneously symmetrically produced while being juxtaposed with each other in the knitting width direction. - According to the
stringer production device 3 of the above configuration, each of the chain production units can knit twostringers 90 and thus a plurality ofstringers 90 can be efficiently produced. Thus, sets of twostringers 90 can be produced by the number corresponding to the number of chain production units. Also, since one end of thestringers 90 in the length direction is pressed by thesinkers 33, the exterior appearance of thestringers 90 is enhanced. Further, when the sinker row presses one end of thestringers 90, twosinkers hook 38. Therefore, as compared with a case where a sinker is positioned only on one of both sides of a hook, locations, at which thestringers 90 are pressed, are increased, thereby stabilizing knitting of thestringers 90. In addition, since twostringers 90 are knitted in a symmetric state, in which a pair ofelement rows stringers 90 into onechain 91 thereafter. Thestringers 90 produced by thestringer production device 3 having the above effects are lowered along a rear surface of theneedle bed 30 and then are delivered to theengagement device 4. - As shown in
Figs. 19 to 21 , theengagement device 4 has a guide path 40 provided as a space portion therein and configured to allow a pair ofstringers 90 to pass therethrough. The guide path 40 has twoinlets 40a spaced from each other in a width direction thereof and one outlet 40b. - Hereinafter, directions with respect to the description of the
engagement device 4 are defined as follows. A width direction means a width direction of the guide path 40 corresponding to a right and left direction inFig. 19 and thus is also referred to as a right and left direction. A length direction means a length direction of the guide path 40 and corresponds to an upward and downward direction inFig. 19 . Also, an inlet direction means a direction from the outlet 40b toward theinlets 40a of the guide path 40 in the length direction and corresponds to a downward direction in the figure. An outlet direction means a direction from theinlets 40a toward the outlet 40b of the guide path 40 in the length direction and corresponds to an upward direction in the figure. A height direction means a height direction of the guide path 40 corresponding to a direction normal to the paper surface ofFig. 19 and thus is also referred to as an upward and downward direction. An upward direction means a direction toward the front side in the normal direction and a downward direction is a direction toward the back side relative to the pater surface in the normal direction. Meanwhile, in the present embodiment, it is assumed that the width direction corresponds to the knitting width direction with respect to the description of thestringer production device 3, the length direction corresponds to the front and rear direction with respect to the description of thestringer production device 3, and the height direction corresponds to the height direction with respect to the description of thestringer production device 3. - As shown in
Figs. 14 to 21 , the engagement device 4 is symmetric in the width direction and, as components for forming the guide path 40, includes first and second base plate portions 50, 60 opposing each other in the height direction with a space interposed therebetween so that a pair of stringers 90 juxtaposed with each other in the width direction can be guided on both sides in a thickness direction thereof; a partition portion 65 for partitioning the space between the first and second base plate portions 50, 60 at the middle thereof in the width direction, which is located on the side of the inlets 40a in the length direction, wherein partition portion 65 is configured to guide both inner sides, in the width direction, of a pair of element rows 95, 95 disengaged from each other; a pressing portion 70 for pressing a middle part, in the width direction, of the first base plate portion 50, which are divided into three parts in the width direction, toward the second base plate portion 60; a pair of outside protrusions 52, 52 protruding from the first base plate portion 50 to narrow a distance between the first and second base plate portions 50, 60 and configured to guide both outer sides, in the width direction, of the pair of element rows 95, 95; first and second center protrusions 59, 61 configured to narrow the distance, in the height direction, between the first and second base plate portions 50, 60 at the middle thereof in the width direction, which is located on the side of the inlets in the length direction; and a pair of spacer portions 53, 53 respectively located on both outer sides of the guide path 40 in the width direction and sandwiched between the first and second base plate portions 50, 60. - The second
base plate portion 60 is a rectangular flat plate and is arranged such that a thickness direction thereof coincides with the height direction. Also, the secondbase plate portion 60 has an upper surface formed as a flat surface in the right and left direction and the front and rear direction and is configured to guide lower surfaces, in the height direction, of the pair ofstringers 90. Meanwhile, in the shown example, the secondbase plate portion 60 is fixed on a frame (not shown) by bolts. - The
second center protrusion 61 is configured to protrude from the middle, in the width direction, of the upper surface of the secondbase plate portion 60 and also to extend over the entire length of an inlet side, in the length direction, of the secondbase plate portion 60. Also, thesecond center protrusion 61 has such a shape that a width thereof gradually narrows upward. Meanwhile, the secondbase plate portion 60 and thesecond center protrusion 61 constitute a singlepiece base member 62. - The first
base plate portion 50 has a pair of sidebase plate portions base plate portion 56 arranged to be sandwiched between the pair of sidebase plate portions base plate portions base plate portion 56 are separate pieces, the centerbase plate portion 56, thepartition portion 65 and thefirst center protrusion 59 constitute a single-piece center member 55, and the sidebase plate portions 51, thespacer portions 53 and theoutside protrusions 52, which are located on the same side in the width direction, constitute single-piece blade members 54, respectively. Also, the pair ofblade members base plate portion 60 to be spaced from each other in a width direction of the secondbase plate portion 60, and thecenter member 55 is arranged on the secondbase plate portion 60 and also configured to be movably guided between the pair ofblade members - The pair of side
base plate portions inner end surfaces inner end surfaces parallel surfaces inclined surfaces inner end surfaces parallel surfaces inclined surfaces parallel surfaces base plate portion 51, which is located on the side of theinner end surface 5 1a, is referred to as an inner edge portion, and the other edge portion opposite thereto is referred to as an outer edge portion. - The side
base plate portion 51 is a skewed hexagonal plate as viewed in the height direction and is configured such that a lengthwise dimension thereof is the same as that of the secondbase plate portion 60 and a widthwise dimension thereof is shorter than a half of a width of the secondbase plate portion 60. More specifically, the hexagon of the sidebase plate portion 51 has such a shape that two corner portions on an inlet side of a rectangle having two sides parallel to the length direction and the width direction are obliquely cut off. - The center
base plate portion 56 is a flat plate thicker than a thickness of the pair of sidebase plate portions parallel portion 57 arranged between the pair ofparallel surfaces inclined portion 58 extending from the centerparallel portion 57 toward theinlets 40a and arranged between the pair ofinclined surfaces 5 1c, 51c. - The center
parallel portion 57 has a rectangular shape linearly extending in the length direction as viewed in the height direction. Thefirst center protrusion 59 protrudes from the middle, in the width direction, of a lower surface of the centerparallel portion 57, toward the secondbase plate portion 60 and extends over the entire length of the centerparallel portion 57 in the length direction. - Also, the center
parallel portion 57 and thefirst center protrusion 59 have lower surfaces formed as a flat surface in the front and direction and the right and left direction and are configured to guide a pair ofleg portions element rows - Also, the lower surfaces of the center
parallel portion 57 and thefirst center protrusion 59 oppose upper surfaces of the secondbase plate portion 60 and thesecond center protrusion 61. Further, the first and second center protrusions 59, 61 are configured to narrow a distance between the first and secondbase plate portions head portions element rows - The center inclined
portion 58 has a triangular shape as viewed in the height direction and thus is configured such that a width thereof gradually narrows toward the inlet direction. Also, the center inclinedportion 58 has a lower surface (a surface thereof opposing the second base plate portion 60) formed as a flat surface in the right and left direction and the front and rear direction, and thepartition portion 65 protrudes downward from the middle, in the width direction, of the flat surface. Thus, the lower surface of the center inclinedportion 58 is exposed to both sides of thepartition portion 65 in the width direction and is configured to guide the engaginghead portions 95b of the pair ofelement rows - The
partition portion 65 has a triangular shape smaller than the center inclinedportion 58 as viewed in the height direction and is configured such that a width thereof gradually narrows toward the inlet direction. Also, both surfaces of thepartition portion 65 in the width direction are configured to guide the pair of engaginghead portions 95b of the pair ofelement rows - The
outside protrusion 52 protrudes downward from the inner edge portion of the lower surface of the sidebase plate portion 51 and is configured to narrow a distance between the sidebase plate portion 51 and the secondbase plate portion 60. A protrusion length of theoutside protrusion 52 is set such that a distance between theoutside protrusion 52 and the secondbase plate portion 60 in the height direction has substantially the same dimension as a thickness of thefastener tape 91 and thefastener tape 91 is allowed to pass between theoutside protrusion 52 and the secondbase plate portion 60. - Also, the
outside protrusion 52 extends along a part of the inner edge portion of the sidebase plate portion 51, which corresponds to theinclined surface 51c, and one end thereof in the extending direction is located at oneinlet 40a of the guide path 40 and the other end in the extending direction is located on theparallel surface 51b of the inner edge portion of the sidebase plate portion 51. Thus, a distance between the pair ofoutside protrusions inlets 40a toward the outlet 40b. Also, thepartition portion 65 exists between the pair ofoutside protrusions outside protrusions 52 and thepartition portion 65 is set to be slightly larger than a width of theelement row 95. On the other hand, on the outlet side relative to thepartition portion 65, nopartition portion 65 exists between the pair ofoutside protrusions outside protrusions element rows - Also, the
outside protrusion 52 is arranged more outside than theinclined surface 51c of theinner end surface 5 1a in the width direction and is spaced therefrom in the outlet direction. Therefore, the lower surfaces of the pair of sidebase plate portions outside protrusions base plate portion 60 and thus is configured to guide an outer surface, in the width direction, of the folded-back portion 95d of the pair ofleg portions element rows 95. Meanwhile, according to the present embodiment, as shown in an enlarged portion ofFig. 7 , the parts of the lower surfaces of the pair of sidebase plate portions outside protrusions portion 58 of the centerbase plate portion 56. - The
spacer portion 53 protrudes downward from the outer edge portion, in the width direction, of the lower surface of the sidebase plate portion 51. Theinner end surface 51a, in the width direction, of thespacer portion 53 is inclined inward in the width direction toward the outlet 40b side, in the length direction, of the sidebase plate portion 51. Thus, a distance between the pair ofspacer portions blade member 54 is fixed on the secondbase plate portion 60 by a bolt B1 extending through thespacer portion 53 and the sidebase plate portion 60 in the height direction. - The
pressing portion 70 has arod 71 extending through thecenter member 55 in the height direction; a fixing portion for fixing one end portion (lower end portion) of therod 71 on the secondbase plate portion 60; acompressive coil spring 73 as a spring for pressing thecenter member 55 against the secondbase plate portion 60 while surrounding an outer circumference of therod 71; and a pushingmember 74 fixed on the other end portion (upper end portion) of therod 71 and configured to push thecompressive coil spring 73. - The
rod 71 is a round rod. Also, a through-hole 55a, which allow therod 71 to extend therethrough, is formed to penetrate the center inclinedportion 58 and thepartition portion 65 of thecenter member 55. The through-hole 55a is formed to be slightly larger than a diameter of therod 71, and thus thecenter member 55 can move along therod 71 in the height direction. - The fixing
portion 72 has a fixinghole 60 penetrating a part of the secondbase plate portion 60, which comes in contact with thepartition portion 65, in the height direction and also allowing therod 71 to pass therethrough; a retaininghole 71a penetrating a part of therod 71, which is located below the secondbase plate portion 60, in a direction perpendicular to the height direction; and a retainingpin 71p inserted in the retaininghole 71 in such a manner that both end portions thereof protrude from the retaininghole 71a. Also, the fixingportion 72 has agroove portion 60s extending over the entire height of an end surface on theinlet 40a side of the secondbase plate portion 60 and thus communicated with the fixinghole 60h. The entire length of thegroove portion 60s in the width direction is set to be larger than a diameter of the retaining pin 7 1p. Thus, it is possible to insert or remove therod 71 in or from the fixinghole 60h while inserting only one end of the retainingpin 71p in therod 71. - The pushing
member 74 has a pushingbody 75, through which therod 71 passes in such a shape that the pushingbody 75 protrudes from therod 71 in a collar shape, and amale screw 76 for fixing the pushingbody 75 to therod 71. - The pushing
body 75 is of a circular disk shape and has a through-hole 75a formed on the center portion thereof to allow therod 71 to pass therethrough, andfemale screw holes 75b formed at a plurality of sites on an outer circumferential surface thereof and configured to be communicated with the through-hole 75a and also to allow themale screw 76 to be screwed therein. - In the
engagement device 4 of the above configuration, the pushingmember 74 and the fixingportion 72 are respectively fixed on both end portions of therod 71, thecenter member 55 and thecompressive coil spring 73 are arranged between the fixingportion 72 and the pushingmember 74 with therod 71 passing through them, and thecompressive coil spring 73 is in a compressed state. Thus, a restoring force acts on thecompressive coil spring 73 so that thepartition portion 65 of thecenter member 55 is pressed against the secondbase plate portion 60. - As shown in
Figs. 19 to 21 , theengagement device 4 as described above is configured to engage a pair ofelement rows stringers - (1) Two
stringers stringer production device 3 are introduced into the twoinlets element rows 90 thereof oppose each other and also are spaced from each other in the width direction. - (2) The pair of
element rows 95 are advanced along the guide path 40 as a pair of engaginghead portions partition portion 65 and also folded-back portions 95d are guided by the pair ofoutside protrusions element row sides stringers base plate portion 56 and the pair of sidebase plate portions base plate portion 60 between the pair ofoutside protrusions partition portion 65. - (3) Since the
partition portion 65 has a width gradually narrowing toward the outlet direction and also the pair ofoutside protrusions head portions element rows element rows - (4) Once the pair of
element rows partition portion 65, a pair of folded-back portions 95d of the pair of passedelement rows outside protrusions head portions chain 97 is produced from twostringers leg portions base plate portion 56 and the secondbase plate portion 60 in the height direction and also the engaging head portion side of the pair ofleg portions first center protrusions head portions - Meanwhile, when the
chain 97 is produced, thecenter member 55 and the secondbase plate portion 60 are in contact with each other due to the restoring force of the pressing portion 70 (compressive coil spring 73). Further, at this time, a height of the element row sides 90a of thestringers 90 passing through the guide path 40 is smaller than a height of the guide path 40 (more specifically, a distance between the lower surfaces of the centerbase plate portion 56 and the pair of sidebase plate portions base plate portion 60 between the pair ofoutside protrusions - But, in some cases, a height of the
element row side 90a is likely to be partially higher than the height of the guide path 40, namely the stringer are likely to be defective. In the case, theelement row side 90a lift thecenter member 55 against the restoring force of thecompressive coil spring 73, so that thecompressive coil spring 73 is further compressed and thus a dimension of the guide path 40 in the height direction is widened, thereby preventing theelement row side 90a from being jammed in the guide path 40. - Further, once the defective part of the
element row side 90a passes through the guide path 40, thecenter member 55 and the secondbase plate portion 60 come in contact with each other again due to the restoring force of thecompressive coil spring 73, so that the pair of engaginghead portions stringers chain 97. - (5) Thereafter, the
chain 97 is discharged from the outlet 40b of the guide path 40 while the pair of engaginghead portions -
Chains 97 produced by all theengagement devices 4 are wound by the windingdevice 5. - According to the
engagement device 4 as described above, twostringers chain 97. Thus, when producing slide fasteners thereafter, there is no need for separately preparing twostringers 90, thereby facilitating production of the slide fasteners. Theengagement device 4 is particularly suitable for using in a production line for a knitted slide fastener, but may be used as an engagement device for fasteners of coil types other than the knitted slide fastener. - Meanwhile, the apparatus for producing a chain for a knitted slide fastener is not limited to the foregoing embodiments.
- For example, the following changes may be made.
- Although in the foregoing embodiments, the
stringer production device 3 is configured such that theguide shaft 35a and thefirst link 36a of theguide movement device 35 and thehook shaft 39a and thearm 39b of thehook movement device 39 are common to twostringer production parts guide movement device 35 and thehook movement device 39 may be equipped in each of thestringer production parts 3a, or only theguide shaft 35a of theguide movement device 35 and thehook shaft 39a of thehook movement device 39 may be common to a plurality ofstringer production parts 3a. - In the foregoing embodiments, the
engagement device 4 has the pair ofspacer portions engagement device 4 may have no pair ofspacer portions base plate portion 50 has the pair of sidebase plate portions base plate portions 56, which are integrated with each other, and the centerbase plate portion 56 is fixed on the secondbase plate portion 60 via thepartition portion 65. - Although in the foregoing embodiments, the
engagement device 4 has thepressing portion 70, the present invention is not limited thereto. In this case, it is sufficient if thecenter member 55 is immovable relative to the secondbase plate portion 60 in the height direction. For example, thecenter member 55 may be fixed on the secondbase plate portion 60 or may be fixed on at least one of the sidebase plate portions 51. - Further, although in the foregoing embodiments, the
engagement device 4 is configured such that the firstbase plate portion 50 is divided into three parts, i.e., the pair of sidebase plate portions base plate portion 56, the present invention is not limited thereto. The firstbase plate portion 50 may be configured such that the pair of sidebase plate portions base plate portion 56 are integrated with each other. - Further, although in the foregoing embodiments, the
engagement device 4 is configured such that thepartition portion 65 is a part of thecenter member 55 and thecenter member 55 including thepartition portion 65 is movable relative to the pair of sidebase plate portions partition portion 65 may be provided as a separate member from thecenter member 55 and thepartition portion 65 may be integrated with the secondbase plate portion 60. - Further, although in the foregoing embodiments, the
engagement device 4 is configured such that the fixingportion 72 uses the retainingpin 71p, the present invention is not limited thereto. The fixingportion 72 may use other fixing means, such as a screw pair, which allows the secondbase plate portion 60 and therod 71 to be screwed to each other. - Further, in the foregoing embodiments, the
engagement device 4 has the first and second center protrusions 59, 61, but theengagement device 4 may have no first and second center protrusions 59, 61. -
- 1:
- Knitting Yarn Supply Device
- 2:
- Monofilament Supply Device
- 3:
- Stringer Production Device
- 3a:
- Stringer Production Parts
- 3b:
- Driving Shaft
- 4:
- Engagement Device
- 5:
- Winding Device
- 30:
- Needle Bed
- 30a:
- Needle Groove
- 30b:
- Needle Protruding Surface
- 31:
- Knitting Needle
- 31a:
- Knitting Needle Movement Device
- 32:
- Guide Needle
- 32a:
- Guide Needle Movement Device
- 32b:
- Hole
- 32c:
- Guide Needle Bar
- 33:
- Sinker
- 33a:
- Sinker Movement Device
- 33b:
- Sinker Bar
- 33c:
- Sinker Shaft
- 33d:
- Sinker Reed
- 34:
- Guide
- 35:
- Guide Movement Device
- 35a:
- Guide Shaft
- 35b:
- Linkage
- 36a:
- First Link
- 36b:
- Second Link
- 36c:
- Third Link
- 36d:
- Fixing Piece
- 36e:
- Connecting Piece
- 36h:
- Fixing Piece Main Body
- 36i:
- Stepped Portion
- 37j:
- Support Shaft
- L1:
- Imaginary Center Line
- 37a:
- First Connection Portion
- 37b:
- Second Connection Portion
- 38:
- Hook
- 38a:
- Rod-Shaped Portion
- 38b:
- Hooking Portion
- 39:
- Hook Movement Device
- 39a:
- Hook Shaft
- 39b:
- Arm
- 39c:
- Attaching Portion
- 40:
- Guide Path
- 40a:
- Inlet
- 40b:
- Outlet
- 50:
- First Base Plate Portion
- 51:
- Side Base Plate Portion
- 51a:
- Inner End Surface
- 51b:
- Parallel Surface
- 51c:
- Inclined Surface
- 52:
- Outside Protrusion
- 53:
- Spacer Portion
- B1:
- Bolt
- 54:
- Blade Member
- 55:
- Center Member
- 55a:
- Through-Hole
- 56:
- Center Base Plate Portion
- 57:
- Center Parallel Portion
- 59:
- First Center Protrusion
- 58:
- Center Inclined Portion
- 60:
- Second Base Plate Portion
- 60h:
- Fixing Hole
- 60s:
- Groove Portion
- 61:
- Second Center Protrusion
- 62:
- Base Member
- 65:
- Partition Portion
- 70:
- Pressing Portion
- 71:
- Rod
- 71a:
- Retaining Hole
- 71p:
- Retaining Pin
- 72:
- Fixing Portion
- 73:
- Compressive Coil Spring
- 74:
- Pushing Member
- 75:
- Pushing Body
- 75a:
- Through-Hole
- 75b:
- Female Screw Hole
- 76:
- Male Screw
- 90:
- Stringer
- 90a:
- Element Row Side
- 90b:
- Non-Element Row Side
- 91:
- Fastener Tape
- 92:
- Knitting Yarn
- 92a:
- Chain Stitch Yarn
- 92b:
- Tricot Knitting Yarn
- 92c:
- Weft Insertion Yarn
- 94:
- Monofilament
- 95:
- Element Row
- 95a:
- Element Portion
- 95b:
- Engaging Head Portion
- 95c:
- Leg Portion
- 95d:
- Folded-Back Portion
- 97:
- Chain
Claims (2)
- A method of producing a stringer (90) for a knitted slide fastener having a coil-shaped element row (95) knitted in one side edge portion of a knitted fastener tape (91), comprising:when knitting the element row (95) into the fastener tape (91) by cooperatively performing a swing operation and shogging operation of a plurality of guide needles (32) and a reciprocating operation of a plurality of knitting needles (31),cooperatively performing a reciprocating operation, in a knitting width direction, of two guides (34, 34), which are juxtaposed with each other in the knitting width direction to deliver linear monofilaments (94, 94), and a reciprocating operation of two hooks (38, 38), which are juxtaposed with each other in the knitting width direction to move between a position, at which the hooks (38, 38) are respectively wound with the monofilaments (94,94), and a position, at which the hooks (38, 38) are separated from the monofilaments (94, 94), so that the monofilaments (94) are bent in a coil shape to form element rows (95), respectively, thereby producing as one chain production unit a set of two stringers (90), which each have the element row (95) knitted in the one side edge portion of the fastener tape (91),wherein a plurality of sets of stringers (90) are produced to be juxtaposed with each other by juxtaposing a plurality of chain production units with each other in the knitting width direction, andwherein the plurality of guides (34, 34) and the plurality of hooks (38, 38) in the chain production unit are symmetrically arranged in pair in the knitting width direction, thereby producing two stringers (90) in a symmetric state where the element rows (95, 95) oppose each other.
- A device for producing a stringer for a knitted slide fastener, comprising a stringer production part (3a) for producing a stringer (90) for a knitted slide fastener having a coil-shaped element row (95) knitted in one side edge portion of a knitted fastener tape (91),wherein the stringer production part (3a) comprises:a needle bed (30) having a plurality of needle grooves (30a);a plurality of knitting needles (31) guided in the plurality of needle grooves (30a);a plurality of guide needles (32) for threading knitting yarns (92) for the fastener tape;a guide (34) allowing a linear monofilament (94) to pass therethrough;a hook (38) configured to be wound with the monofilament (94);a hook movement device (39) for moving the hook (38) between a position, at which the hook (38) is wound with the monofilament (94), and a position, at which the hook (38) is separated from the monofilament (94); anda guide movement device (35) for reciprocatingly moving the guide (34) in a knitting width direction, so that the monofilament (94) is bent at the one side edge portion of the fastener tape (91) and thus forms the element row (95);characterized in that
a plurality of chain production units, which each is constituted of two stringer production parts (3a) juxtaposed with each other in the knitting width direction, are arranged to be juxtaposed with each other in the knitting width direction, and
the plurality of guides (34, 34) and the plurality of hooks (38, 38) in the chain production unit are symmetrically arranged in pair in the knitting width direction, thereby configured to produce two stringers (90) in a symmetric state where the element rows (95, 95) oppose each other.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2015/084678 WO2017098635A1 (en) | 2015-12-10 | 2015-12-10 | Production method for stringer for woven slide fasteners and production device |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3387940A1 EP3387940A1 (en) | 2018-10-17 |
EP3387940A4 EP3387940A4 (en) | 2019-08-14 |
EP3387940B1 true EP3387940B1 (en) | 2022-08-10 |
Family
ID=59013862
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15910251.6A Active EP3387940B1 (en) | 2015-12-10 | 2015-12-10 | Production method for stringer for woven slide fasteners and production device |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3387940B1 (en) |
CN (1) | CN107105834A (en) |
TW (1) | TWI620530B (en) |
WO (1) | WO2017098635A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109757834A (en) * | 2017-11-09 | 2019-05-17 | Ykk株式会社 | Zipper teeth chain manufacturing device |
CN109924616B (en) * | 2017-12-19 | 2021-09-17 | Ykk株式会社 | Zipper teeth chain manufacturing device |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1936053B1 (en) * | 1969-07-16 | 1971-03-25 | Opti Holding Ag | Device for attaching continuous rows of zipper links to continuous straps |
FR2188976A1 (en) * | 1972-06-16 | 1974-01-25 | Elastelle Fonta Ille Fil | Sliding clasp fastener - has teeth formed by helical filament knitted into edge wale of backing fabric |
JPS51149421A (en) * | 1975-06-18 | 1976-12-22 | Nissan Motor Co Ltd | Air-fuel ratio control device |
US4137733A (en) * | 1976-05-20 | 1979-02-06 | Optilon W. Erich Heilmann Gmbh | Slide-fastener-stringer half with knitted-in coupling elements and method of making same |
DE3621987A1 (en) * | 1986-07-01 | 1988-01-14 | Opti Patent Forschung Fab | METHOD AND DEVICE FOR PRODUCING A ZIPPER TAPE BY WEAVING |
JPS6342916A (en) | 1986-08-05 | 1988-02-24 | Toray Ind Inc | Sheath-core type conjugated fiber |
DE3634162A1 (en) * | 1986-10-07 | 1988-04-21 | Ries Gmbh Bekleidungsverschlus | ZIPPER AND METHOD FOR THE PRODUCTION THEREOF |
JP3549677B2 (en) * | 1996-08-08 | 2004-08-04 | Ykk株式会社 | Method and apparatus for manufacturing braided slide fastener stringers |
JP4046699B2 (en) * | 2004-02-17 | 2008-02-13 | Ykk株式会社 | Braided slide fastener |
JP4225987B2 (en) * | 2005-06-24 | 2009-02-18 | Ykk株式会社 | Warp knitting fastener tape making machine |
JP5318227B2 (en) * | 2009-12-25 | 2013-10-16 | Ykk株式会社 | Braided slide fastener |
CN102154784A (en) * | 2011-05-12 | 2011-08-17 | 江苏汇源拉链制造有限公司 | Zipper belt knitting machine and zipper tape knitted by same |
CN105163623B (en) * | 2013-12-26 | 2019-01-15 | Ykk株式会社 | Weaving type fastener stringer manufacturing device |
-
2015
- 2015-12-10 CN CN201580002269.6A patent/CN107105834A/en active Pending
- 2015-12-10 WO PCT/JP2015/084678 patent/WO2017098635A1/en active Application Filing
- 2015-12-10 EP EP15910251.6A patent/EP3387940B1/en active Active
-
2016
- 2016-12-02 TW TW105139773A patent/TWI620530B/en active
Also Published As
Publication number | Publication date |
---|---|
TWI620530B (en) | 2018-04-11 |
EP3387940A4 (en) | 2019-08-14 |
WO2017098635A1 (en) | 2017-06-15 |
TW201720330A (en) | 2017-06-16 |
EP3387940A1 (en) | 2018-10-17 |
CN107105834A (en) | 2017-08-29 |
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