CN110652078B - Fastener stringer, slide fastener, and method and apparatus for manufacturing the same - Google Patents
Fastener stringer, slide fastener, and method and apparatus for manufacturing the same Download PDFInfo
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- CN110652078B CN110652078B CN201810701037.5A CN201810701037A CN110652078B CN 110652078 B CN110652078 B CN 110652078B CN 201810701037 A CN201810701037 A CN 201810701037A CN 110652078 B CN110652078 B CN 110652078B
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- fastener
- tape
- region
- chain
- cutting
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- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
- A44B19/00—Slide fasteners
- A44B19/02—Slide fasteners with a series of separate interlocking members secured to each stringer tape
- A44B19/04—Stringers arranged edge-to-edge when fastened, e.g. abutting stringers
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- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
- A44B19/00—Slide fasteners
- A44B19/24—Details
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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
Abstract
The invention provides a fastener stringer, a slide fastener, a method and an apparatus for manufacturing the same. In the method of cutting the fastener elements to form the space portion, the removed portion of the fastener elements may remain in the fastener chain. The fastener element tape includes a fastener tape (10) and fastener elements (20). The fastener element (20) includes: the monofilament (23) has a 1 st region (21) extending spirally along the longitudinal direction of the fastener tape (10) and a 2 nd region (22) provided in a range between the terminal end (19) of the fastener tape (10) and the 1 st region (21) along the longitudinal direction of the fastener tape (10). In the 2 nd region (22), the plurality of 1 st leg parts (31) and the plurality of 2 nd leg parts (32) included in the fastener element (20) are joined to a joint part (40) containing the same resin material as the monofilament (23). The joint (40) extends between an engagement head (33) included in the 1 st region (21) and the distal end (19) of the fastener tape (10).
Description
Technical Field
The present disclosure relates to a fastener stringer, a slide fastener, and a method and an apparatus for manufacturing the same.
Background
Documents of the prior art
Patent document
Patent document 1: japanese examined patent publication (Kokoku) No. 59-46164
Patent document 2: japanese examined patent publication No. 56-28523
Disclosure of Invention
Problems to be solved by the invention
In the method of cutting the fastener elements to form the space portion, the removed portion of the fastener element may remain in the fastener chain.
Means for solving the problems
A fastener element tape according to an aspect of the present disclosure includes: a fastener tape having a 1 st tape face and a 2 nd tape face;
a fastener element provided on the 1 st tape surface side of the fastener tape and provided at a side edge portion of the fastener tape,
the fastener element includes: a 1 st region in which a monofilament spirally extends along a longitudinal direction of the fastener tape in such a manner that the fastener element has a repeated structure of a 1 st leg portion, an engagement head portion, a 2 nd leg portion, and a reversed portion; and a 2 nd region provided to a range between an end of the fastener tape in a longitudinal direction of the fastener tape and the 1 st region,
in the 2 nd region, the 1 st leg portions and the 2 nd leg portions included in the fastener elements are joined to a joint portion containing the same resin material as the monofilament,
the joint portion extends between the engagement head portion included in the 1 st region and the end of the fastener tape.
In some embodiments, the coupling portion has a cut surface extending between the engaging head portion included in the 1 st region and the distal end of the fastener tape.
In some embodiments, the cut surface is located inside the fastener tape from the engaging head included in the 1 st region.
In some embodiments, the cross-section of the monofilament is visually recognizable in the cut surface.
In some embodiments, the cut surface has a width in a direction orthogonal to the 1 st and 2 nd tape surfaces of the fastener tape and a length in a direction along the side edge portion of the fastener tape, and satisfies 5 < (L/W) when the width of the cut surface is W and the length of the cut surface is L.
In some embodiments, a maximum width of the cut surface in a direction orthogonal to the 1 st and 2 nd tape surfaces of the fastener tape is smaller than a maximum width of the engaging head in a direction orthogonal to the 1 st and 2 nd tape surfaces of the fastener tape.
In some embodiments, the cut surface is positioned adjacent to a region where two or more warp threads included in the fastener tape for fastening the fastener element to the 1 st tape surface of the fastener tape are arranged.
A slide fastener according to an aspect of the present disclosure includes: any one pair of the above-mentioned fastener element tapes; and at least one slider for opening and closing the pair of fastener tapes.
A method for manufacturing a slide fastener according to an aspect of the present disclosure includes: forming a welded portion extending in a longitudinal direction of a fastener chain by ultrasonic welding processing performed on a part of an engagement region in which engagement heads of fastener elements included in each fastener element tape of the fastener chain are engaged;
forming a cutting line extending in a longitudinal direction of the fastener chain at the welded portion;
and cutting the fastener chain along a width direction orthogonal to a longitudinal direction of the fastener chain along with cutting of the welded portion.
In some embodiments, the fastener chain is cut after the cutting line is formed to the welded portion.
In some embodiments, in order to form a cutting line at the welded portion, a knife is used, and the knife moves so as to reach the welded portion via a slit between fastener tapes included in the fastener chain.
In several embodiments, the knife includes a 1 st edge portion having a 1 st tip and a 2 nd edge portion having a 2 nd tip, at least two inclined edge regions extending between the 1 st and 2 nd tips.
A slide fastener manufacturing apparatus according to an aspect of the present disclosure includes: an ultrasonic welding device that forms a welded portion extending in a longitudinal direction of a fastener chain by ultrasonic welding processing performed on a portion of an engagement region in which engagement heads of fastener elements included in each fastener element tape of the fastener chain are engaged;
a first cutting device 1 for forming a cutting line extending in a longitudinal direction of the fastener chain at the welded portion;
and a second cutting device for cutting the fastener chain along a width direction orthogonal to a longitudinal direction of the fastener chain in association with cutting of the welded portion.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the method for manufacturing a slide fastener of one embodiment of the present disclosure, the possibility that the removed portion of the fastener element remains in the fastener chain can be suppressed.
Drawings
Fig. 1 is a schematic top view of a slide fastener according to an embodiment of the present disclosure.
Fig. 2 is a schematic bottom view of a slide fastener according to an embodiment of the present disclosure, showing a 1 st region and a 2 nd region of a fastener element.
Fig. 3 is a schematic view of a 2 nd region of each fastener element of the fastener element tape.
Fig. 4 is a diagrammatic sectional view in the plane indicated at IV-IV in fig. 3.
Fig. 5 is a schematic front view of a cross section of the joint.
Fig. 6 is a schematic view showing a part of an engagement region of an engagement head of a fastener element to be subjected to ultrasonic welding in a diagonally shaded area.
Fig. 7 is a schematic view showing lines to cut for cutting a welded portion.
Fig. 8 is a process view showing a method of manufacturing a slide fastener according to an embodiment of the present disclosure, schematically showing a fastener chain.
Fig. 9 is a process view showing a method of manufacturing a slide fastener according to an embodiment of the present disclosure, and schematically shows a fastener chain to be subjected to an ultrasonic welding treatment.
Fig. 10 is a process view showing a method of manufacturing a slide fastener according to an embodiment of the present disclosure, schematically showing a fastener chain after an ultrasonic welding treatment.
Fig. 11 is a process diagram showing a method of manufacturing a slide fastener according to an embodiment of the present disclosure, and schematically shows a cutting device for cutting a welded portion formed in a fastener chain.
Fig. 12 is a process diagram showing a method of manufacturing a slide fastener according to an embodiment of the present disclosure, and schematically shows a state after a welded portion formed in a fastener chain is cut.
Fig. 13 is a process view showing a method of manufacturing a slide fastener according to an embodiment of the present disclosure, schematically showing a state in which a cutting device is separated from a fastener chain.
Fig. 14 is a schematic view of a knife for cutting off a weld.
Fig. 15 is a schematic view showing a slit formed in a welded portion.
Fig. 16 is a schematic view showing lines to cut related to cutting of the fastener chain in association with cutting of the welded portion.
Fig. 17 is a schematic view showing the fastener chain after the cutting portion.
Fig. 18 is a schematic view showing a fastener chain after being cut in another mode.
Description of the reference numerals
10. A zipper tape; 11. 1, a first belt surface; 12. a 2 nd belt surface; 13. a side edge portion; 15. warp threads; 19. a terminal end; 20. a zipper tooth; 21. region 1; 22. a 2 nd region; 23. a monofilament; 31. 1 st leg; 32. a 2 nd leg; 33. clamping the head; 34. a turning part; 40. a bonding section; 49. cutting off the section; 50. a fastener stringer; 60. a slider; 71. a front stop; 72. a back stop; 80. a zipper; 90. a zipper chain; 121. an ultrasonic welding device; 122. an anvil; 123. an amplitude transformer; 126. 1 st cutting device; 140. and (7) welding the parts.
Detailed Description
Non-limiting embodiments of the present invention will be described below with reference to fig. 1 to 18. The features included in the embodiment examples and the embodiment examples disclosed in 1 or more are not independent from each other. Those of skill in the art will be able to combine embodiments and/or features without undue experimentation. In addition, the person skilled in the art will also be able to understand the synergistic effects brought about by this combination. In principle, the overlapping description between the embodiments is omitted. The description of the invention is mainly for the purpose of referring to the drawings, and there are cases of simplification for the sake of drawing convenience.
In the following description, each feature described in connection with a certain fastener tape and/or a manufacturing method thereof can be understood as a combination with other features and can be understood as a separate feature independent of other features. Individual features are not necessarily combined with other features, and individual features may be regarded as independent individual features, but may be combined with 1 or more other individual features. Recitation of all combinations of individual features is redundant to those skilled in the art and is omitted. Individual features are not necessarily limited thereto, and are explicitly stated in the expression "some cases". The individual features are not only effective for the fastener tape and/or the manufacturing method thereof illustrated in the drawings, for example, but can be understood as general features commonly used for other various fastener tapes and/or manufacturing methods thereof.
Fig. 1 is a schematic view of the upper surface of a slide fastener 80. Fig. 2 is a schematic view of the lower surface of the slide fastener 80, showing the 1 st region 21 and the 2 nd region 22 of the fastener element 20. Fig. 3 is a schematic view of the 2 nd region 22 of the fastener element 20 of each fastener element tape 50. The plurality of 1 st leg portions 31 and the plurality of 2 nd leg portions 32 are combined with the combining portion 40. Fig. 4 is a diagrammatic sectional view in the plane indicated at IV-IV in fig. 3. Fig. 5 is a schematic front view of a cut surface 49 of the joint 40. Fig. 6 is a schematic diagram showing a part R33 of the engagement region of the engagement head 33 of the fastener element 20 to be subjected to the ultrasonic welding process, in a diagonally shaded region. Fig. 7 is a schematic view showing lines to cut for cutting the welded portion 140.
The front-back direction can be understood in terms of the moving direction of the slider 60 included in the slide fastener 80. The advancement of the slider 60 closes a pair of fastener stringer tapes 50 included in the slide fastener 80. The retreat of the slider 60 opens the pair of fastener element tapes 50 included in the slide fastener 80. When the pair of fastener element tapes 50 are closed, the fastener elements 20 included in the respective fastener element tapes 50 are engaged with each other. When the pair of fastener element tapes 50 are opened, the fastener elements 20 included in the respective fastener element tapes 50 are not engaged with each other.
The pair of fastener element tapes 50 opened and closed by the slider 60 are arranged along the left-right direction orthogonal to the front-rear direction. Therefore, the pair of fastener tape 50 can also be referred to as a pair of right and left fastener tape 50. The left-right direction is an arbitrary direction orthogonal to the front-back direction and parallel to the 1 st and 2 nd tape surfaces 11, 12 of the fastener tape 10 included in the fastener tape 50. The 1 st tape surface 11 and the 2 nd tape surface 12 are surfaces that define the thickness of the fastener tape 10. The up-down direction is an arbitrary direction orthogonal to the front-back direction and the left-right direction. Hereinafter, for the detailed description, reference is made to the front-back direction, the left-right direction, and the up-down direction defined as described above. However, the front-back direction, the left-right direction, and the up-down direction can be redefined as described below.
The slide fastener 80 has a pair of right and left fastener element tapes 50 and a slider 60. Each fastener element tape 50 has a fastener tape 10 and a fastener element 20. The slide fastener 80, the fastener tape 50, the fastener tape 10, and the fastener element 20 extend in the front-rear direction and are elongated in the front-rear direction. The width W80 of the slide fastener 80 is equal to the sum of the width W10 of the left fastener tape 10, the width W10 of the right fastener tape 10, and the width W89 of the slit 89 extending in the front-rear direction between the left and right fastener tapes 10. The slide fastener 80, the fastener tape 50, and the fastener tape 10 have equal lengths in the front-rear direction.
The fastener tape 10 is a woven or knitted fabric having flexibility, or a structure in which a woven structure and a knitted structure are combined. The fastener tape 10 has a 1 st tape face 11 and a 2 nd tape face 12 that define the thickness of the fastener tape 10. The 1 st belt surface 11 can be referred to as a lower belt surface and the 2 nd belt surface 12 can be referred to as a upper belt surface with reference to the up-down direction defined as described above. The fastener element 20 is provided on the 1 st tape surface 11 side of the fastener tape 10 and on the side edge portion 13 of the fastener tape 10. The side edge portion 13 of the fastener tape 10 where the fastener element 20 is provided is one side edge portion of the fastener tape 10 extending in the longitudinal direction of the fastener tape 10. In the slide fastener 80, the side edge portions 13 of the fastener tapes 10 of the fastener element tapes 50 are adjacently disposed in the left-right direction. Similarly, in the slide fastener 80, the fastener elements 20 of the fastener element tapes 50 are adjacently disposed in the left-right direction.
Optionally, the zipper 80 also has a front stop 71 for preventing the forward movement of the slider 60, and/or a back stop 72 for preventing the backward movement of the slider 60. The front stopper 71 and/or the rear stopper 72 are made of metal or resin. In some cases, the front stop 71 has: a main body portion disposed on the 2 nd tape surface 12 of the fastener tape 10; a plurality of claws for pressing the fastener elements 20 against the 1 st tape surface 11 of the fastener tape 10. The claws are plastically deformed after penetrating the fastener tape 10. The back stop 72 is not limited to the one for fixing the right and left fastener elements 20, and may be a back stop that can be separated from each other in the right and left directions.
The slider 60 is made of metal or resin. The slider 60 includes an upper blade, a lower blade, a connecting post for connecting the upper blade and the lower blade, and a flange portion. The slider 60 has a rear opening and a pair of left and right front openings positioned with a coupling post extending in the vertical direction therebetween. As the slider 60 advances, the left fastener element 20 enters the slider 60 through the left front opening, and the right fastener element 20 enters the slider 60 through the right front opening. As the slider 60 advances, the fastener elements 20 entering the slider 60 engage in the slider 60 and are exposed to the outside of the slider 60 through the rear opening of the slider 60. Similarly, the case where the engagement of the fastener element 20 is released by the retreat of the slider 60 will be understood, and redundant description will be omitted.
As shown in fig. 2 and 3, the fastener element 20 includes a 1 st region 21 and a 2 nd region 22 provided in a range between the terminal end 19 of the fastener tape 10 and the 1 st region 21 in the longitudinal direction of the fastener tape 10. The 1 st region 21 is a region in which the monofilament 23 spirally extends along the longitudinal direction of the fastener tape 10 so that the fastener element 20 has a repeated structure of the 1 st leg portion 31, the engagement head 33, the 2 nd leg portion 32, and the reversed portion 34. On the other hand, as shown in fig. 4, the 2 nd region 22 is a region where the plurality of 1 st leg portions 31 and the plurality of 2 nd leg portions 32 included in the fastener element 20 are joined to the joint portion 40, and the joint portion 40 contains the same resin material as the monofilament 23. The coupling portion 40 extends between the engagement head 33 included in the 1 st region 21 and the distal end 19 of the fastener tape 10. The 1 st leg 31 and/or the 2 nd leg 32 having an exposed free end is avoided or suppressed. In the case where the 1 st leg portion 31 and/or the 2 nd leg portion 32 have an exposed free end portion, for example, irritation may be caused to the skin of a person or entanglement with fibers of clothes.
The coupling portion 40 is obtained by cutting the welded portion 140 (see fig. 7) formed by the ultrasonic welding process performed on the part R33 (see fig. 6) of the engagement region in which the engagement head portion 33 of the fastener element 20 of the fastener chain 90 is engaged, but is not necessarily limited thereto. In this case, when the space portion is formed in the fastener chain 90, the removed portion of the fastener element 20 is prevented or suppressed from remaining in the fastener chain 90. The engagement region in which the engagement head 33 is engaged is a region in which the engagement head 33 is continuously provided in a zigzag shape along the longitudinal direction of the fastener chain 90. The arrangement of the serrations of reference numeral 33 shown in fig. 6 indicates the arrangement of the serrations of the engaging head 33. Note that the joint portion 40 does not need to be formed when a space portion is formed for the fastener chain 90.
The monofilament 23 constituting the fastener element 20 contains a thermoplastic resin such as Polyamide (PA), Polyacetal (POM), or Polycarbonate (PC). In some cases, the cross-sectional shape of the monofilament 23 is circular or elliptical. The spiral structure of the monofilament 23 is constructed by, for example, spirally winding the monofilament 23 around the outer peripheral surface of the mandrel, but is not necessarily limited thereto.
The unit structures including the 1 st leg portion 31, the engaging head portion 33, the 2 nd leg portion 32, and the turning portion 34 are continuously provided in the front-rear direction, and the spiral structure of the monofilament 23 is constructed. The 1 st leg portion 31 and the 2 nd leg portion 32 extend in the left-right direction, respectively. The 2 nd leg portion 32 is in contact with the 1 st tape face 11 of the fastener tape 10. The 1 st leg portion 31 is provided at a distance from the 1 st tape surface 11 of the fastener tape 10. The engaging head 33 extends to join the 1 st leg 31 and the 2 nd leg 32. The turnup portion 34 is provided inside the fastener tape compared to the engagement head portion 33. The width of the engaging head 33 in the front-rear direction is larger than the width of each of the 1 st leg 31 and the 2 nd leg 32 in the front-rear direction. This allows the engagement between the engagement head 33 of the left fastener element 20 and the engagement head 33 of the right fastener element 20.
When the joint 40 is obtained by cutting the welded portion 140 (see fig. 7) formed by the ultrasonic welding process performed on the part R33 (see fig. 6) of the engagement region in which the engagement head 33 is engaged, it is conceivable that the joint 40 included in one fastener element tape 50 of the pair of right and left fastener element tapes 50 includes the resin portion of the engagement head 33 of the fastener element 20 derived from the other fastener element tape 50 of the pair of right and left fastener element tapes 50.
Specifically, the 1 st leg portion 31 adjacent to each other in the front-rear direction of the left fastener element 20 is joined to the resin portion containing the resin material from one of the engaging heads 33 of the right fastener element 20 in the front-rear direction. The 1 st leg 31 adjacent in the front-rear direction belongs to different unit configurations adjacent in the front-rear direction. The 2 nd leg portions 32 adjacent to each other in the front-rear direction of the left fastener element 20 are joined to each other in the front-rear direction by a resin portion containing a resin material derived from one of the engagement heads 33 of the right fastener element 20. The 2 nd leg portions 32 adjacent in the front-rear direction belong to different unit configurations adjacent in the front-rear direction. The 1 st leg portion 31 and the 2 nd leg portion 32 belonging to the same unit structure in the left fastener element 20 are joined in the vertical direction by a resin portion containing a resin material originating from one of the engagement heads 33 of the right fastener element 20. The coupling portion 40 may be a resin portion containing a resin material derived from the engagement head portion 33, but it is to be noted that a resin material derived from the 1 st leg portion 31 and/or the 2 nd leg portion 32 may be alternatively or additionally contained.
When the joint 40 is obtained by cutting the welded portion 140 (see fig. 7) formed by the ultrasonic welding process with respect to the part R33 (see fig. 6) of the engagement region in which the engagement head 33 engages, the joint 40 has the cut surface 49 extending between the engagement head 33 included in the 1 st region 21 and the distal end 19 of the fastener tape 10. In addition, the monofilament 23 or the weld 140 can be pressed between the anvil 122 and the horn 123 (see fig. 9). It is assumed that the thickness of the welded portion 140 in the vertical direction is reduced.
In some cases, the maximum width W49 of the cut surface 49 in the direction orthogonal to the 1 st and 2 nd tape surfaces 11, 12 of the fastener tape 10 is smaller than the maximum width W33 of the engaging head portion 33 in the direction orthogonal to the 1 st and 2 nd tape surfaces 11, 12 of the fastener tape 10 (that is, in the up-down direction) (see fig. 5). Additionally or alternatively, 5 < L/W is satisfied, where W represents the width W49 of the cut surface 49 and L represents the length L49 of the cut surface 49. Further, the cut surface 49 has a width W49 in a direction orthogonal to the 1 st and 2 nd tape surfaces 11, 12 of the fastener tape 10 and a length L49 in a direction along the side edge portion 13 of the fastener tape 10. It is also assumed that the cross section of the monofilament 23 is visible in the cut surface 49 (see fig. 5). The shape and size of the cross section of the monofilament 23 visible in the cut surface 49 vary depending on the cutting position, the cutting angle, the degree of thermal deformation of the monofilament 23, and the like.
The cut surface 49 extends along the side edge portion 13 of the fastener tape 10 and/or between the engagement head portion 33 included in the 1 st region 21 and the distal end 19 of the fastener tape 10. The cut surface 49 need not be a surface parallel to the front-rear direction, but may be a surface inclined to the left or right as it extends in the front-rear direction. The cutting surface 49 is not necessarily limited to this, and is located inside the fastener tape from the engaging head 33 included in the 1 st region 21. The cut surface 49 can also be understood as being located closer to the side edge portion 13 of the fastener tape 10 than the engaging head portion 33 included in the 1 st region 21. The fastener tape inner side is a direction from a position outside the tape surface toward a position inside the tape surface with respect to the 1 st tape surface 11 or the 2 nd tape surface 12. For example, the fastener tape inner side is a direction from a position outside the 1 st tape surface 11 toward a position inside the 1 st tape surface 11 through the side edge portion 13 of the fastener tape 10. The cut surface 49 can be a flat surface or a non-flat surface.
The following 1 or more conditions can be satisfied. The arrangement pitch of the 1 st leg 31 in the 1 st region 21 is equal to the arrangement pitch of the 1 st leg 31 in the 2 nd region 22. The arrangement pitch of the 2 nd leg 32 in the 1 st region 21 is equal to the arrangement pitch of the 2 nd leg 32 in the 2 nd region 22. The arrangement pitch of the turning parts 34 in the 1 st region 21 is equal to the arrangement pitch of the turning parts 34 in the 2 nd region 22. The number of the 1 st leg portions 31 included in the 1 st region 21 is larger than the number of the 1 st leg portions 31 included in the 2 nd region 22. The number of the 2 nd leg portions 32 included in the 1 st region 21 is larger than the number of the 2 nd leg portions 32 included in the 2 nd region 22. The number of the turning parts 34 included in the 1 st region 21 is larger than the number of the turning parts 34 included in the 2 nd region 22. The number of the 1 st leg portions 31 included in the 2 nd region 22 is two or more and 50 or less. The number of the 2 nd leg portions 32 included in the 2 nd region 22 is two or more and 50 or less. The number of the turning parts 34 included in the 2 nd region 22 is two or more and 50 or less.
In some cases, 1 or more engaging head portions 33 are arranged between the front stopper 71 and the coupling portion 40. A stronger coupling between the front stop 71 and the fastener element 20 is ensured. Further, a case is also conceivable in which the front stopper 71 is provided for the 2 nd region 22.
The fastener element 20 is fastened to the 1 st tape surface 11 of the fastener tape 10 by the warp 15 of the fastener tape 10. In some cases, the cut surface 49 is positioned adjacent to a region where two or more warp threads 15 included in the fastener tape 10 for fastening the fastener element 20 to the 1 st tape surface 11 of the fastener tape 10 are arranged. In fig. 3, the warp yarn 15 is depicted in such a manner as to extend in the front-rear direction on the 1 st leg portion 31 of the fastener element 20. In practice, each warp yarn 15 repeatedly extends so as to straddle at least 1 weft yarn on the 2 nd band surface 12 side after straddling at least two 1 st leg portions 31. The number of the warp threads 15 is two or more.
Fig. 8 to 13 are process views showing a method of manufacturing the slide fastener 80. Fig. 14 is a schematic view of a knife 128 for severing weld 140. Fig. 15 is a schematic view showing a cutting line SL140 formed at the welded portion 140. Fig. 16 is a schematic view showing lines to cut related to cutting of the fastener chain 90 in association with cutting of the welded portion 140. Fig. 17 is a schematic view showing the fastener chain after the cutting portion. Fig. 18 is a schematic view showing a fastener chain after being cut in another mode.
To manufacture the slide fastener 80, a fastener chain 90 shown in fig. 8 is used. The fastener chain 90 is formed by coupling a pair of fastener element tapes 50. In order to insert the pair of fastener elements 20 included in the fastener chain 90 into the slider 60, the fastener chain 90 is provided with a space portion in which the fastener elements 20 are partially removed in the longitudinal direction of the fastener chain 90. The fastener chain 90 is cut at the space portion, and the pair of fastener elements 20 included in the fastener chain 90 is inserted into the slider 60. The space portion is formed at a constant interval in the fastener chain 90 in the process of conveying the fastener chain 90 to the downstream side. To convey the fastener chain 90, a pair of rollers can be used, which sandwich the fastener chain 90 therebetween. The fastener chain 90 is cut at a space portion on one upstream side of the space portion at the most downstream position in the conveying direction of the fastener chain 90. Thus, the slide fastener 80 is obtained from the slide fastener chain 90.
When the space portion is formed in the fastener chain 90, as shown in fig. 9, ultrasonic welding processing is performed on a portion R33 of an engagement region in which the engagement head 33 of the fastener element 20 included in each fastener element tape 50 of the fastener chain 90 is engaged (see fig. 6). As a result, as shown in fig. 10, a welded portion 140 (see fig. 7) extending in the longitudinal direction of the fastener chain 90 is formed in the fastener chain 90.
The ultrasonic welding device 121 is used in the ultrasonic welding process. The ultrasonic welding device 121 includes an anvil 122 and a horn 123. The horn 123 transmits vibration energy to a part R33 of the engagement region in which the engagement head 33 is engaged. As a result, the engaging head 33, the 1 st leg 31, or the 2 nd leg 32 of the R33 existing in a part of the engaging region melts and then is fixed to each other to form the welded portion 140 (see fig. 7). In some cases, the weld 140 has a recess 147 corresponding to contact with the horn 123.
Next, as shown in fig. 11 to 13, a step of forming a cutting line SL140 extending in the longitudinal direction of the fastener chain 90 in the welded portion 140 is performed. The 1 st cutting device 126 is used to form a cutting line SL140 extending in the longitudinal direction of the fastener chain 90 in the welded portion 140. The 1 st cutting device 126 has a knife guide 127 and a knife 128 guided by the knife guide 127. Optionally, the 1 st cutting device 126 further includes a chain guide 113 that guides the moving fastener chain 90.
The knife guide 127 descends together with the knife 128. After the blade guide 127 contacts the fastener tape 10, the blade 128 is further lowered. In some cases, the blade 128 reaches the weld 140 via a slit 89 extending in the length direction of the fastener chain 90 between the pair of fastener tapes 10. In other words, the knife 128 moves so as to reach the welding portion 140 via the slit 89 between the fastener tapes 10 included in the fastener chain 90. The variation of the cutting position of the welding part 140 is avoided or suppressed.
The blade 128 is thin plate-like. The blade 128 has a width W128 orthogonal to the conveying direction of the fastener chain 90 and a length L128 along the conveying direction of the fastener chain 90. The blade guide 127 is provided with a passage matching the shape of the blade 128. The blade guide 127 restricts displacement of the blade 128 in a direction orthogonal to the conveying direction of the fastener chain 90, additionally or alternatively restricts displacement of the blade 128 along the conveying direction of the fastener chain 90. A cutting line SL140 (see fig. 15) is formed in the welded portion 140 cut by the blade 128. The cutting line SL140 cuts the welded portion 140 completely or partially. The cutting line SL140 may be a slit penetrating the welding portion 140.
In some cases, the knife 128 includes a 1 st edge portion 131 having a 1 st tip 133 and a 2 nd edge portion 132 having a 2 nd tip 134, with at least two inclined edge regions 135, 136 extending between the 1 st and 2 nd tips 133, 134. When the blade 128 reaches the welded portion 140, the welded portion 140 is pressed in the opposite direction by the 1 st blade part 131 and the 2 nd blade part 132, and thus, undesired or inadmissible displacement of the welded portion 140 is suppressed. The angle formed by the inclined edge regions 135, 136 may be 30 ° or more and 120 ° or less. The 1 st blade part 131 and the 2 nd blade part 132 are arranged in the conveying direction of the fastener chain 90. Similarly, the 1 st edge 133, the 1 st inclined edge region 135, the 2 nd inclined edge region 136, and the 2 nd edge 134 are disposed in the conveying direction of the fastener chain 90.
Next, as shown in fig. 16, the fastener chain 90 is cut along the width direction orthogonal to the longitudinal direction of the fastener chain 90 so as to be accompanied by cutting of the welded portion 140. In order to cut the fastener chain 90 along the width direction orthogonal to the longitudinal direction of the fastener chain 90 along with the cutting of the welded portion 140, a 2 nd cutting device (not shown) is used. The fastener chain 90 is cut along, for example, a cutting line CL19 in fig. 16. At this time, the welded portion 140 is also cut. As shown in fig. 17 and 18, the end 19 of the fastener chain 90 can take any linear shape such as a straight line or zigzag line according to the cutting line CL 19. The fastener chain 90 is not necessarily limited to this, but is cut after the cutting line SL140 is formed to the welded portion 140.
The fastener elements 20 of the fastener chain 90 shown in fig. 17 are next passed through the slider 60 held to the retainer. For this purpose, a jig for gripping each fastener tape 50 of the fastener chain 90 is used. The formation of the space portion, the cutting of the fastener chain 90, and the threading of the fastener element 20 through the slider 60 are repeated to manufacture a plurality of slide fasteners 80 from one fastener chain 90. The attachment of the front stopper 71 and the rear stopper 72 to the slide fastener 80 is performed after the step of inserting the fastener element 20 into the slider 60.
Various modifications can be made to the embodiments by those skilled in the art in light of the above teachings. Reference numerals are incorporated into the claims for reference and are not referred to for the purposes of limiting the interpretation of the claims.
Claims (13)
1. A fastener stringer provided with:
a fastener tape (10) having a 1 st tape surface (11) and a 2 nd tape surface (12); and
a fastener element (20) provided on the 1 st tape surface (11) side of the fastener tape (10) and provided on a side edge portion (13) of the fastener tape (10),
the fastener element (20) includes: a 1 st region (21) in which a monofilament (23) extends spirally along the longitudinal direction of the fastener tape (10) in such a manner that the fastener element (20) has a repeated structure of a 1 st leg portion (31), an engagement head portion (33), a 2 nd leg portion (32), and a reversed portion (34); and a 2 nd region (22) provided to a range between an end (19) of the fastener tape (10) and the 1 st region (21) in a longitudinal direction of the fastener tape (10),
in the 2 nd region (22), a plurality of 1 st leg parts (31) and a plurality of 2 nd leg parts (32) included in the fastener element (20) are joined to a joint part (40), and the joint part (40) contains the same resin material as the monofilament (23),
the joint (40) extends between the engagement head (33) included in the 1 st region (21) and the distal end (19) of the fastener tape (10).
2. The fastener stringer tape of claim 1,
the joint (40) has a cutting surface (49) extending between the engagement head (33) included in the 1 st region (21) and the distal end (19) of the fastener tape (10).
3. The fastener stringer tape of claim 2,
the cut surface (49) is located on the inner side of the fastener tape (10) than the engaging head (33) included in the 1 st region (21).
4. The fastener stringer tape of claim 2,
the cross section of the monofilament (23) is visually recognizable in the cut surface (49).
5. The fastener stringer tape of claim 2,
the cut surface (49) has a width (W49) in a direction orthogonal to the 1 st tape surface (11) and the 2 nd tape surface (12) of the fastener tape (10) and a length (L49) in a direction along the side edge portion (13) of the fastener tape (10),
when the width of the cut surface (49) is W and the length of the cut surface (49) is L, 5 < (L/W) is satisfied.
6. The fastener stringer tape of claim 2,
a maximum width (W49) of the cutting surface (49) in a direction orthogonal to the 1 st tape surface (11) and the 2 nd tape surface (12) of the fastener tape (10) is smaller than a maximum width (W33) of the engaging head (33) in a direction orthogonal to the 1 st tape surface (11) and the 2 nd tape surface (12) of the fastener tape (10).
7. The fastener stringer according to any one of claims 2 to 6,
the cutting surface (49) is positioned adjacent to a region where two or more warp threads (15) included in the fastener tape (10) for fastening the fastener element (20) to the 1 st tape surface (11) of the fastener tape (10) are arranged.
8. A slide fastener is provided with:
the pair of fastener stringer tapes (50) of any one of claims 1 to 6;
at least one slider (60) for opening and closing the pair of fastener element tapes (50).
9. A method for manufacturing a slide fastener according to claim 8, comprising the steps of:
a step of forming a welded portion (140) extending in the longitudinal direction of a fastener chain (90) by ultrasonic welding processing performed on a portion (R33) of an engagement region in which an engagement head (33) of a fastener element (20) included in each fastener element tape (50) of the fastener chain (90) is engaged;
forming a cutting line (SL140) extending in the longitudinal direction of the fastener chain (90) in the welded portion (140); and
and a step of cutting the fastener chain (90) along a width direction orthogonal to the longitudinal direction of the fastener chain (90) in association with the cutting of the welded portion (140).
10. The method of manufacturing a slide fastener according to claim 9,
cutting the fastener chain (90) after the cutting line (SL140) is formed to the welded portion (140).
11. The method of manufacturing a slide fastener according to claim 9,
in order to form a cutting line (SL140) in the welded portion (140), a knife (128) is used, and the knife (128) moves so as to reach the welded portion (140) through a slit (89) between fastener tapes (10) included in the fastener chain (90).
12. The method of manufacturing a slide fastener according to claim 11,
the knife (128) includes a 1 st blade portion (131) having a 1 st blade tip (133) and a 2 nd blade portion (132) having a 2 nd blade tip (134), at least two inclined blade regions (135, 136) extending between the 1 st blade tip (133) and the 2 nd blade tip (134).
13. A manufacturing apparatus of a slide fastener, which is the manufacturing apparatus of the slide fastener of claim 8, comprising:
an ultrasonic welding device (121) that forms a weld (140) extending in the longitudinal direction of a fastener chain (90) by means of ultrasonic welding processing performed on a portion (R33) of an engagement region in which engagement heads (33) of fastener elements (20) included in each fastener element tape (50) of the fastener chain (90) are engaged;
a 1 st cutting device (121) that forms a cutting line (SL140) in the welded portion (140) that extends in the longitudinal direction of the fastener chain (90); and
and a 2 nd cutting device that cuts the fastener chain (90) along a width direction orthogonal to a longitudinal direction of the fastener chain (90) in association with cutting of the welded portion (140).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810701037.5A CN110652078B (en) | 2018-06-29 | 2018-06-29 | Fastener stringer, slide fastener, and method and apparatus for manufacturing the same |
| TW108115356A TWI692324B (en) | 2018-06-29 | 2019-05-03 | Zipper chain belt, zipper, manufacturing method and manufacturing device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810701037.5A CN110652078B (en) | 2018-06-29 | 2018-06-29 | Fastener stringer, slide fastener, and method and apparatus for manufacturing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110652078A CN110652078A (en) | 2020-01-07 |
| CN110652078B true CN110652078B (en) | 2022-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810701037.5A Active CN110652078B (en) | 2018-06-29 | 2018-06-29 | Fastener stringer, slide fastener, and method and apparatus for manufacturing the same |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110652078B (en) |
| TW (1) | TWI692324B (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| TW202000069A (en) | 2020-01-01 |
| TWI692324B (en) | 2020-05-01 |
| CN110652078A (en) | 2020-01-07 |
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