WO2015068243A1 - Slide fastener, molding device, and method for producing fastener slider - Google Patents

Abstract

Disclosed is a fastener slider (500). One or more of the principal facing surfaces (515, 525) of an upper blade (510) and a lower blade (520) are provided with a pair of protruding sections (600), each of which is provided between a connecting column (530) and one of a pair of flange parts (550). One or more of the pair of protruding sections (600) is at least partially positioned between a front inside surface (15) and extending surfaces (PL13, PL13') of a rear inside surface (13) which extend toward the connecting-column (530) side thereof, and the rear inside surface (13) is positioned on the same side as said protruding sections (600) when compared to the position of the connecting column (530).

Description

Slide fastener, mold apparatus, and method for manufacturing fastener slider

The present disclosure relates to a slide fastener, a mold apparatus, and a method for manufacturing a fastener slider.

Patent Document 1 is provided with a hemispherical design portion (16) as shown in FIGS. 1, 2 and 4 of the same document, and can accommodate the tape side edge portion of the mating tape member. A slide fastener (10) using a fastener element (15) provided with a tape receiving groove (19) is disclosed.

Patent Document 2 discloses a slide fastener that uses the same fastener element as Patent Document 1. In the same document, as disclosed in the summary of the same document, in order to prevent the core string between the fastener elements from being caught in the gap between the upper and lower flanges, the dimension between the upper and lower flanges is crushed and the front and back of the core string are crushed. It is disclosed to set it smaller than the directional dimension.

Patent Document 3 discloses a slider for a slide fastener in which a pressing surface 12 is provided on the inner surface of a flange 9 as shown in FIG. As shown in FIG. 3 of the same document, the pressing surface 12 is a surface that guides while suppressing the reversing portion 20 of the linear element 17. In paragraph 0012 of this document, it is explained that there is a problem that thread breakage occurs in the fastener tape due to friction generated between the fastener tape between the elements and the edge portion on the front opening side of the flange. In FIG. 2 of the same document, a protrusion 14 extending in the direction of the front opening 13 from the front opening 13 side end of the flange 9 is provided, and the protrusion 14 has a stepped portion 15 and a downward inclined surface 16. It is shown in the figure.

International Publication No. 2011/039868 International Publication No. 2011/040167 JP 2008-36280 A

When the fastener element moves through the element passage in the fastener slider, the fastener element is guided by the wall surface of the element insertion passage, and a stable sliding operation is ensured. If the size of the fastener element is too large with respect to the space of the element passage, friction between the fastener element and the wall surface of the element insertion passage is increased, and the slidability is deteriorated. On the other hand, if the fastener element is too small with respect to the space of the element passage, the position stability of the fastener element in the element passage is lowered, the movement of the fastener element becomes unstable, and the fastener element may not be properly engaged. There is.

The space of the element passage and the size of the fastener element are one of the considerations for ensuring a smooth sliding operation. However, in the case of resin fastener sliders, the effect of thermal shrinkage due to the cooling process after resin injection. Thus, the vertical width of the rear opening becomes narrower than the vertical width of the left and right front openings on the connecting column side. This may be a problem from the viewpoint of the operability of the slide fastener.

A slide fastener according to an aspect of the present invention is a pair of fastener stringers (100) in which a plurality of fastener elements (400) are provided on opposite side edges (210) of a fastener tape (200), and the pair of fastener stringers Each fastener element (400) of (100) has a tape insertion recess (450) into which the opposite side edge (210) of the fastener tape (200) of the other fastener stringer (100) of the pair can be inserted. A fastener slider (500) for engaging and separating a pair of fastener stringers (100) and each fastener element (400) of the pair of fastener stringers (100), the upper wing plate (510) and the lower The vane plate (520) is connected via the connecting column (530). A slider body (540) having an element passage (70) through which the fastener element (400) is inserted between the upper blade plate (510) and the lower blade plate (520). (540) A pair of flange portions (550) extending from the rear opening side toward the front opening side is provided on at least one of the upper blade plate (510) and the lower blade plate (520), and the pair of flange portions. Each inner surface (51, 52) of (550) includes a rear inner surface (13) on the rear mouth side and a front inner surface (15) on the front mouth side, and each of the pair of flange portions (550) A fastener slider (500) in which a distance between the front inner surface (15) is wider than a distance between the rear inner surfaces (13) of the pair of flange portions (550), and the upper wing plate (510) and Lower wing plate (520) At least one of the opposing main surfaces (515, 525) is provided with a pair of raised portions (600) between each of the connecting column (530) and the front inner side surface (15), and each raised portion (600 ) Is an extension surface (PL13, PL13) of the rear inner surface (13) located on the same side as the raised portion (600) to the connection column (530) side when compared with the position of the connection column (530). ') And the front inner surface (15).

The front inner surface (15) includes a first front inner surface (11), a second front inner surface (12) inclined between the first front inner surface (11) and the rear inner surface (13). Each raised portion (600) is connected to the connecting column (530) side of the rear inner surface (13) located on the same side as the raised portion (600) when compared with the position of the connecting column (530). It is good to be provided at least partially between the extension surface (PL13, PL13 ′) and the first front inner surface (11).

The fastener element (400) includes at least a design part (430) having a round shape that is convexly curved in the tape width direction and the tape longitudinal direction, which can contact the upper blade (510), and the pair of raised portions ( 600) is provided on the opposing main surface (515) of the upper blade (510).

It is preferable that the raised portion (600) includes an inclined surface (610) that faces the connecting column (530).

In a mold apparatus according to another aspect of the present invention, an upper blade (510) and a lower blade (520) are connected via a connecting column (530), and the upper blade (510) and the lower blade are connected. (520) includes a slider body (540) in which an element passage (70) through which the fastener element (400) is inserted is formed, and extends from the rear side of the slider body (540) toward the front side. A mold device (80) for forming a fastener slider (500) provided with at least one of the upper wing plate (510) and the lower wing plate (520) having a pair of flange portions (550), A first molding surface (811) for molding at least one opposing main surface (515, 525) of the upper wing plate (510) and the lower wing plate (520), and inner surfaces of the pair of flange portions (550) (51, 52) A first mold (810) including a second molding surface (813) and a third molding surface (814) to be molded, and the first mold (810) are combined with the first mold (810). A second mold (820) for molding the connecting column (530), wherein at least one opposing main surface (515, 525) of the upper blade (510) and the lower blade (520) is molded. A second mold including a fourth molding surface (821) and a fifth molding surface (823) and a sixth molding surface (824) for molding the inner surfaces (51, 52) of the pair of flange portions (550). (820), and the first molding surface (811) of the first mold (810) is provided with a pair of depressions (30), wherein the first mold (810) has the One of the pair of depressions (30) in a state in which the second mold (820) is combined. , At least partially, a plane (PL813) on which the second molding surface (813) of the first mold (810) exists and a fifth molding surface (823) of the second mold (820) exist. A plane (PL814) between which the third molding surface (814) of the first mold (810) is at least partially provided to the other of the pair of depressions (30). ) And the plane (PL824) where the sixth molding surface (824) of the second mold (820) is present.

According to another aspect of the present invention, there is provided a fastener slider manufacturing method in which (i) an upper wing plate (510) and a lower wing plate (520) are connected via a connecting column (530), and the upper wing plate (510) is connected. ) And the lower wing plate (520), and a slider body (540) in which an element passage (70) through which the fastener element (400) is inserted is formed, from the rear opening side of the slider body (540) to the front A plurality of molds for forming a fastener slider (500) in which a pair of flange portions (550) extending toward the mouth side are provided on at least one of the upper wing plate (510) and the lower wing plate (520). And (ii) a step of matching the plurality of molds, wherein the space shape formed by the plurality of molds that have been mold-matched includes the upper blade plate (510) and the lower mold. Wing plate 520) forming a ridge (600) on at least one of the opposing major surfaces, and defining the ridge (600) to be disposed on the front opening side of the slider body (540); (Iii) supplying molten resin to a space formed by the plurality of molds in a state in which the plurality of molds are combined, and (iv) cooling the supplied molten resin, And (v) removing the solidified molten resin from the plurality of molds, and in the initial stage of the temperature lowering, the raised portion (600) and the raised portion (600) face each other. A first vertical dimension of the front opening of the slider body (540) is set by the opposing main surface, and the slider body (540) is larger than the first vertical dimension due to the absence of the raised portion (600). The second vertical dimension is set, and the difference Δh of the difference between the first vertical dimension and the second vertical dimension is set. After further cooling, the second vertical dimension of the rear opening of the slider body (540) is set. The dimension is reduced, and accordingly, the dimensional difference Δh after further temperature decrease becomes smaller than the dimensional difference Δh in the initial stage of temperature decrease.

According to the present invention, it is possible to contribute to the improvement of the operability of the slide fastener by coping with the influence of the heat shrinkage of the resin.

It is a schematic upper front view of the slide fastener concerning a 1st embodiment of the present invention, and shows the state where the front side of the slide fastener was opened and the rear side of the slide fastener was closed. It is a schematic perspective view of the fastener element of the slide fastener which concerns on 1st Embodiment of this invention. In addition, the core string to which the fastener element is fixed is shown schematically by a one-dot broken line. It is a schematic perspective view of the fastener element of the slide fastener which concerns on 1st Embodiment of this invention, The perspective view seen from the direction different from FIG. 2 is shown. It is a schematic side view of the fastener element of the slide fastener which concerns on 1st Embodiment of this invention. It is a schematic diagram which shows typically the meshing state of the right and left fastener elements of the slide fastener which concerns on 1st Embodiment of this invention, and the hatching of a diagonal line shows the fixation range of the fastener element with respect to a core string typically, A dotted line This hatching schematically shows the existence range of the core string inserted into the tape insertion recess of the fastener element. It is a schematic side view of the fastener element of the slide fastener which concerns on the modification of this invention. It is an upper front view of the fastener slider of the slide fastener which concerns on 1st Embodiment of this invention. FIG. 8 is a schematic cross-sectional view of the fastener slider of the slide fastener according to the first embodiment of the present invention, and schematically shows individual cross sections along the cut surfaces P1 to P3 shown in FIG. It is a schematic horizontal cross-sectional view of the fastener slider of the slide fastener according to the first embodiment of the present invention, showing the connecting pillars in cross-section at the upper and lower intermediate positions, and the upper blade and the fastener element in principle shown by solid lines. . FIG. 3 is a schematic front view of the fastener slider of the slide fastener according to the first embodiment of the present invention, in which a fastener element of one fastener stringer enters one front opening of the fastener slider, and the other front opening of the fastener slider The state by which the core string of the tape side edge of the other fastener stringer was arranged is shown typically. FIG. 3 is a schematic rear front view of the fastener slider of the slide fastener according to the first embodiment of the present invention, and the tape of the other fastener stringer is inserted into the tape insertion recess of the fastener element of one fastener stringer on the rear opening side of the fastener slider. The state where the core string of the side edge was inserted is shown typically. It is explanatory drawing for demonstrating the problem of the heat shrink of resin in light of the side view of a fastener slider. It is explanatory drawing for demonstrating the problem of resin sinking in light of the rear front view of a fastener slider. It is a schematic diagram which shows the mold parting line of the metal mold | die used in order to manufacture the fastener slider of the slide fastener which concerns on 1st Embodiment of this invention. FIG. 15 is a cross-sectional view of a mold used for manufacturing the fastener slider of the slide fastener according to the first embodiment of the present invention, and schematically shows individual cross sections along the cut surfaces Q1 to Q3 shown in FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The disclosed embodiments are examples of the invention specified by the claims, and the invention specified by the claims is not allowed to be interpreted in a limited manner in light of the description of the exemplary embodiments. The reference drawings are mainly intended to explain the invention and are simplified as appropriate.

The front-rear direction described in the present application coincides with the vertical direction when FIG. 1 is viewed from the front, coincides with the moving direction of the fastener slider, coincides with the longitudinal direction of the fastener tape, and coincides with the extending direction of the fastener element rows. . The left-right direction described in the present application coincides with the left-right direction when FIG. 1 is viewed from the front, and coincides with the side-by-side direction of the left and right fastener tapes. The vertical direction described in the present application coincides with the direction perpendicular to the paper surface of FIG. 1, coincides with the direction perpendicular to the main surface of the fastener tape, and the upper and lower blades of the fastener slider. It corresponds to the extending direction of the connecting column connecting the plates. The front-rear direction, the left-right direction, and the up-down direction are orthogonal to each other. Those skilled in the art will be able to redefine terminology in the light of the following description and the disclosure of the drawings in this application.

<First Embodiment>
The first embodiment will be described with reference to FIGS. FIG. 1 is a schematic top front view of a slide fastener, schematically showing a state in which the front side of the slide fastener is opened and the rear side of the slide fastener is closed. FIG. 2 is a schematic perspective view of a fastener element of a slide fastener. In addition, the core string to which the fastener element is fixed is shown schematically by a one-dot broken line. FIG. 3 is a schematic perspective view of a fastener element of a slide fastener, and shows a perspective view seen from a direction different from FIG. FIG. 4 is a schematic side view of a fastener element of a slide fastener. FIG. 5 is a schematic diagram schematically showing a state in which the left and right fastener elements of the slide fastener are engaged with each other, where hatched hatching schematically indicates a fixing range of the fastener element to the core string, and dotted hatching indicates the fastener element. The existing range of the core string inserted in the tape insertion recessed part of this is shown typically. FIG. 6 is a schematic side view of a fastener element of a slide fastener according to a modification. FIG. 7 is a top front view of the fastener slider of the slide fastener. FIG. 8 is a schematic cross-sectional view of a fastener slider of a slide fastener, and schematically shows individual cross sections along the cut surfaces P1 to P3 shown in FIG. FIG. 9 is a schematic horizontal cross-sectional view of the fastener slider of the slide fastener, showing the connecting pillars in cross-section at the upper and lower intermediate positions, and the upper wing plate and the fastener elements in principle shown by solid lines. FIG. 10 is a schematic front view of a fastener slider of a slide fastener. A fastener element of one fastener stringer is inserted into one front opening of the fastener slider, and the other fastener stringer is inserted into the other front opening of the fastener slider. The state where the core string of the tape side edge was arranged is shown typically. FIG. 11 is a schematic rear front view of the fastener slider of the slide fastener. On the rear opening side of the fastener slider, the core string on the tape side edge of the other fastener stringer is inserted into the tape insertion recess of the fastener element of one fastener stringer. A state in which is inserted is schematically shown. FIG. 12 is an explanatory diagram for explaining the problem of heat shrinkage of the resin in light of the side view of the fastener slider. FIG. 13 is an explanatory diagram for explaining the problem of resin sink marks in light of the rear front view of the fastener slider. FIG. 14 is a schematic diagram showing a parting line of a mold used for manufacturing a fastener slider of a slide fastener. FIG. 15 is a cross-sectional view of a mold used to manufacture a fastener slider of a slide fastener, and schematically shows individual cross sections along the cut surfaces Q1 to Q3 shown in FIG.

As shown in FIG. 1, the slide fastener 90 includes a pair of fastener stringers 100 including a left fastener stringer 101 and a right fastener stringer 102, and further includes a resin fastener slider 500 for opening and closing the pair of fastener stringers 100. Each fastener stringer 100 includes a fastener tape 200, a core string 210 on the opposite side edge of the fastener tape 200, and a fastener element 400 provided on the core string 210. A plurality of fastener elements 400 are provided along the longitudinal direction of each fastener stringer 102, and each fastener element 400 is independent.

The fastener tape 200 is a woven fabric or a knitted fabric, and is a flexible sheet. The fastener element 400 is a resin molded portion integrated with the opposite side edge of the fastener tape 200 by injection molding of a synthetic resin such as polyamide, polyacetal, polypropylene, polybutylene terephthalate, etc., although not necessarily limited thereto. Similarly to the fastener element 400, the fastener slider 500 is also a molded product formed by injection molding of synthetic resin.

As schematically shown in FIG. 1, the left and right fastener elements 400 are engaged with each other by the forward movement of the fastener slider 500, whereby the left fastener stringer 101 and the right fastener stringer 102 are closed. The left fastener element 401 fixed to the core string 211 of the left fastener tape 201 is connected to the core string 212 of the right fastener tape 202 at the closed position of the left fastener stringer 101 and the right fastener stringer 102 behind the fastener slider 500 shown in FIG. The fastener element 400 is disposed between the right and left fastener elements 402 adjacent to each other with a gap corresponding to one fastener element 400. Similarly, the right side fastener element 402 fixed to the core string 212 of the right side fastener tape 202 is fixed to the core string 211 of the left side fastener tape 201, and the left side fastener element 401 adjacent to the front and rear is spaced apart by one fastener element 400. Arranged between.

When the left and right fastener stringers 100 are engaged, the left and right fastener elements 400 are alternately arranged on the same straight line in the front-rear direction. More specifically, the fastener element 400 is the distal end portion farthest from the fastener tape 200 in the fastener tape width direction and the side opposite to the distal end portion, and the fastener element 400 is most inward of the fastener tape. A distal end portion of the right fastener element 402 and a proximal end portion of the left fastener element 401 are arranged on the same straight line in the front-rear direction, and the distal end portion of the left fastener element 401 and the right fastener. The base ends of the elements 402 are alternately arranged so as to be on the same straight line in the front-rear direction. This point is significantly different from the conventional zigzag-type fastener element according to the related art. Furthermore, the individual fastener elements 400 are provided on the opposite side edge 210 of each fastener tape 200 with an interval corresponding to one fastener element 400, thereby ensuring high flexibility of each fastener stringer 100.

As shown in FIGS. 2 to 4, a tape insertion recess 450 is provided at the tip of each fastener element 400. Therefore, when the left side fastener element 401 is disposed between the right side fastener elements 402 arranged side by side before and after being fixed to the right side fastener tape 202, the core string 212 of the right side fastener tape 202 is inserted into the tape insertion recess 450 of the left side fastener element 401. Is done. Thereby, as schematically shown in FIG. 1, the left side fastener elements 401 and the right side fastener elements 402 are alternately arranged on the same straight line in the front-rear direction. As apparent from this description, when the right fastener element 402 is disposed between the left side fastener elements 401 arranged side by side before and after being fixed to the left side fastener tape 201, the core string 211 of the left side fastener tape 201 becomes the right side fastener element. It is inserted into the tape insertion recess 450 of 402.

As shown in FIG. 1 to FIG. 4, engaging portions 460 are provided on the front and rear side surfaces of each fastener element 400. In the above-described meshing state shown in FIG. 1, the rear engaging portion 460 of the left fastener element 401 is engaged with the front engaging portion 460 of the adjacent right fastener element 402, and the rear side of the right fastener element 402 is engaged. The engaging portion 460 engages with the engaging portion 460 on the front side of the adjacent left fastener element 401. In such a manner, the engagement between the left fastener element 401 and the right fastener element 402 is linearly continued in the front-rear direction, and thereby the slide fastener 90 is provided with resistance to tensile in the left-right direction.

As shown in FIGS. 2 to 4, the fastener element 400 according to the present example is on the tip side compared to the base 410 and the base 410 fixed to the core string 210, and the head provided with the tape insertion recess 450. Part 420. The fastener element 400 further includes a design portion 430 provided in a range extending from the base portion 410 and the head portion 420. The design part 430 is surrounded by an arcuate curved surface. The fastener element 400 has a front-rear width along the core string 210 to which the fastener element 400 is fixed and a left-right width from the core string 210 to which the fastener element 400 is fixed toward the other core string 210. Configured slightly larger than. In other words, the design portion 430 has a half shape obtained by dividing a spherical bead that is curved in a convex shape in the tape width direction and the tape longitudinal direction.

As shown in FIG. 1, in a meshed state where the left and right fastener elements 400 are linearly continuous in the front-rear direction, a spherical body, and in an end, the bead-shaped fastener elements 400 are linearly continuous in the front-rear direction, Looks like a rosary. This is fundamentally different from the conventional engagement state of a fastener element, and not only has a design novelty, but also gives a high flexibility to the fastener stringer 100. ing. As will be readily understood by those skilled in the art, the shape of the design portion 430 is not limited to the half shape of the bead that is long on the left and right in the illustrated example, and is inclined toward the tip point, for example, a triangular pyramid or a quadrangular pyramid. It may be a portion having three or more planes.

Each of the front and rear engaging portions 460 provided on the fastener element 400 has an engaging surface 465 that faces the core string 210 on the tape side edge to which the fastener element 400 provided with the fastener element 400 is fixed. As can be seen from FIG. 4, the engagement surface 465 is positioned closer to the core string 210 than the bottom surface 455 of the tape insertion recess 450, so that the engagement surface 465 is not divided by the tape insertion recess 450 and has a sufficient vertical range. It is possible to secure the engagement area. Since the engagement between the engagement portions 460 of the left and right fastener elements 400 is provided for the resistance of the slide fastener 90 in the left and right direction, this is not necessarily limited, but as shown in the drawings, the engagement surfaces 465 are A plane that is orthogonal to the left-right direction is desirable.

As shown in FIG. 5, when the left and right fastener elements 400 are engaged, the engagement surface 465 of the rear engagement portion 460 of the left fastener element 401 is the engagement surface of the engagement portion 460 of the front side of the right fastener element 402. The engagement surface 465 of the rear engagement portion 460 of the right fastener element 402 is in surface contact with the engagement surface 465 of the front engagement portion 460 of the left fastener element 401 (not shown). In such a manner, the surface contact of the respective engagement surfaces 465 of the left fastener element 401 and the right fastener element 402 is linearly arranged in the front-rear direction, so that the slide fastener 90 is provided with resistance to lateral tension.

2 to 5, the fastener element 400 is fixed to a single core string, but the fastener element 400 has two smaller core portions adjacent to each other in the vertical direction as shown in FIG. 6. It may be fixed to the core string provided. The entire contents of Patent Document 2 disclosing the technology relating to FIG. 6 are hereby incorporated herein by reference.

Hereinafter, a detailed configuration of the fastener slider 500 according to the present embodiment will be described with reference to FIGS. 7 to 11. The fastener slider 500 according to this embodiment is a resin-made fastener slider as described at the beginning, and the insertion of the fastener element 400 having a relatively large size by having the design portion 430 as described above. It is configured relatively large to allow

As shown in FIG. 7, the fastener slider 500 includes a slider body 540, a handle attachment portion 560 that is integrally provided on the upper surface of the slider body 540, and a handle 570 that is rotatably provided on the handle attachment portion 560. . By holding the handle 570, the fastener slider 500 can be moved back and forth, and the slide fastener 90 can be opened and closed.

As shown in FIGS. 8 to 11, the slider body 540 includes an upper wing plate 510, a lower wing plate 520 disposed opposite the upper wing plate 510, and the upper wing plate 510 and the lower wing plate 520 at the front end of the slider body 540. The connecting pillar 530 is connected at the left and right center of each other. Each of the upper wing plate 510 and the lower wing plate 520 is provided with a pair of flange portions 550 extending in the front-rear direction along the left and right side edges, and finally, a left flange portion 551 and a right flange portion 552. The upper wing plate 510 is provided with a left upper flange portion 511 and a right upper flange portion 521, and the lower wing plate 520 is provided with a left lower flange portion 512 and a right lower flange portion 522.

As shown in FIG. 9, the connecting column 530 has a front surface 535 positioned in front of the front ends of the left and right flange portions 550, and has a rear end portion 536 that is tapered rearward on the opposite side of the front surface. The front surface 535 and the rear end 536 of the connection column 530 are connected by the left side surface 531 and the right side surface 532 of the connection column 530. There is a left front port between the left side surface 531 of the connecting column 530 and the left flange portion 551, and there is a right front port between the right side surface 532 and the right flange portion 552 of the connecting column 530.

A left tape insertion groove is formed between the left upper flange portion 511 of the upper wing plate 510 and the left lower flange portion 512 of the lower wing plate 520. A right tape insertion groove is formed between the right upper flange portion 521 of the upper wing plate 510 and the right lower flange portion 522 of the lower wing plate 520.

The upper wing plate 510 has an opposing main surface 515 that faces the lower wing plate 520. Lower wing plate 520 has an opposing main surface 525 that faces upper wing plate 510. The element passage 70 provided in the slider body 540 is closed from above and below by the pair of opposed main surfaces 515 and 525. The pair of opposed main surfaces 515 and 525 are basically configured congruently, but differ in that a raised portion 600 is formed on the upper blade plate 510 on which the design portion 430 of the fastener element 400 slides.

8 (P1), the left upper flange portion 511 and the right upper flange portion 521 have inner side surfaces 52 that face each other. The left upper flange portion 511 has an inner surface 513 that faces the right upper flange portion 521. The right upper flange portion 521 has an inner surface 523 that faces the left upper flange portion 511. The left lower flange portion 512 and the right lower flange portion 522 have inner surfaces 51 that face each other. The left lower flange portion 512 has an inner surface 514 that faces the right lower flange portion 522. The right lower flange portion 522 has an inner surface 524 that faces the left lower flange portion 512. The element passage 70 provided in the slider body 540 is closed from the left and right by the inner side surfaces 51 and 52 facing the left and right flange portions 550.

As shown in FIGS. 8 (P2) and 8 (P3), raised portions 600 are provided on the left and right sides of the connecting column 530 on the front end side of the slider body 540. The raised portion 600 is disposed between the connecting column 530 and the left or right flange portion 550. With such a configuration, the displacement of the fastener element 400 within the slider body 540 at the front end of the slider body 540 can be achieved even when the distance between the upper blade plate 510 and the lower blade plate 520 is set wide in consideration of the effect of thermal contraction of the resin. Can be sufficiently restricted, and the movement of the fastener element 400 within the slider body 540 can be facilitated. In the element passage 70 that is sufficiently restricted, the fastener element 400 is prevented from rolling, and the smooth sliding of the fastener slider 500 can be ensured.

In this embodiment, the fastener slider is designed so that the vertical width of the rear opening after heat shrinkage of the resin matches the vertical height of the fastener element. If the raised portion 600 is not provided, the vertical width of the front opening of the fastener slider is larger than the vertical height of the fastener element, and a gap is formed. That is, the dimension of the vertical width on the front opening side is larger than the vertical width on the rear opening side. As a result, the amount of displacement of the fastener element on the front opening side of the slider increases, and the movement of the fastener element within the slider cannot be restricted well, and in some cases, the fastener element rolls within the fastener element. There is a risk that.

When the fastener element 400 has the semi-beaded design portion 430 as in the present embodiment, the fastener element 400 may easily fall within the slider body 540 due to the outer peripheral curved surface of the design portion 430. In the present embodiment, in view of this point, the raised portion 600 is provided on the opposing main surface 515 of the upper blade plate 510 on which the design portion 430 of the fastener element 400 slides. As a result, the above-described fastener element 400 is prevented from rolling. Of course, the raised portion 600 may be provided on the lower blade 520 in addition to or as an alternative to the present embodiment.

In the case of a fastener element having a shape as in Patent Document 1 or Patent Document 2, the fastener element easily rotates about the front-rear direction, so that it is caught on the front opening side, and the sliding operation is not smooth. obtain.

8A and 8B, the raised portion 600 has a left raised portion 601 on the left side of the connecting column 530 and a right raised portion 602 on the right side of the connecting column 530. The height of the left raised portion 601 and the height of the right raised portion 602 with respect to the opposing main surface 515 are the same, but not necessarily limited to this aspect. For example, if the shapes and heights of the design portions 430 of the left and right fastener elements 400 are different, the heights of the left and right raised portions 600 can be individually adjusted accordingly.

The raised portion 600 is preferably provided so as to narrow the opening size of the front opening of the slider body 540. As shown in FIG. 9, a left raised portion 601 is also present between the front end 551 f of the left flange portion 551 and the left side surface 531 of the connection column 530, and the front end 552 f of the right flange portion 552 and the right side surface of the connection column 530. There is also a right ridge 602 between 532. In other words, the raised portion 600 is disposed in front of the front ends of the left and right flange portions 550.

As is apparent from the (P2) and (P3) portions of FIG. 8, the raised portion 600 preferably has an inclined surface 610 that faces the connecting column 530. The raised portion 600 has a flat surface 620 between the inclined surface 610 and the flange portion 550 adjacent to the raised portion 600. The inclined surface 610 connects between the opposed main surface 515 and the flat surface 620 and is inclined slowly and shallowly so as to face the connecting column 530. The flat surface 620 is in a mode in which the opposing main surface 515 is slightly shifted downward, and is parallel to the opposing main surface 515.

As shown in FIGS. 8 and 9, an opposing main surface 515 of the upper wing plate 510 exists between the connecting column 530 and each raised portion 601. The opposing main surface 515 of the upper wing plate 510 exists between the front opening and the rear opening of the slider body 540. The vertical dimension between the upper and lower blades at the place where the raised portion 600 between the connecting column 530 and the raised portion 600 shown in FIG. 8 (P3) is not provided is the rear opening of the slider body 540 shown in FIG. 8 (P1). It is wider than the vertical dimension between the upper and lower blades. The opposing main surface 515 of the upper wing plate 510 is an inclined surface that gently falls from the front opening side to the rear opening side of the slider body 540. The vertical dimension of the rear mouth shown in FIG. 8 (P1) substantially matches the vertical dimension of the front mouth in the raised portion 600 shown in FIG. 8 (P3), but is preferably larger than this.

The left raised portion 601 is provided between the left side surface 531 of the connecting column 530 and the inner side surface 513 of the left upper flange portion 511. Between the connecting column 530 and the left upper flange portion 511, an opposing main surface 515, an inclined surface 611, and a flat surface 621 are arranged in this order from the connecting column 530 side. The right raised portion 602 is provided between the right side surface 532 of the connecting column 530 and the inner side surface 523 of the right upper flange portion 521. Between the connection column 530 and the right upper flange portion 521, an opposing main surface 515, an inclined surface 612, and a flat surface 622 are arranged in this order from the connection column 530 side.

The inner side surface 513 of the left upper flange 511 and the inner side surface 523 of the right upper flange 521 are respectively a pair of rear inner side surfaces 13 extending from the rear port side end toward the front port, and a front port side end to the rear port It is comprised from the front inner surface 15 extended toward the side. The rear inner surface 13 and the front inner surface 15 constitute a continuous inner surface. The left and right rear inner side surfaces 13 are inner side surfaces extending substantially in parallel along the front-rear direction. On the other hand, the left and right front inner side surfaces 15 are provided in such a manner that the distance between them increases as they extend from the end of the parallel rear inner side surface 13, in other words, the second front inner side surface provided in a tapered shape. 12 at least. Furthermore, the left and right front inner side surfaces 15 have first front inner side surfaces 11 that extend from the second front inner side surface 12 substantially in parallel in the front-rear direction. That is, the second front inner surface 12 is provided between the rear inner surface 13 and the first front inner surface 11. The left and right second front inner surfaces 12 are provided in a tapered shape so that the distance between them is gradually increased.

It is desirable to provide a raised portion 600 on the opposing main surface 515 of the upper blade 510 in the manner shown in FIG. The boundary of the left raised portion 601 on the side of the connecting column 530 is defined by the extension of the rear inner side surface 13 of the left upper flange portion 511, and the boundary is provided on the extension line or the extension surface. Similarly, the boundary of the right raised portion 602 on the side of the connecting column 530 is defined by the extension of the rear inner side surface 13 of the right upper flange portion 521, and the boundary is provided on the extension line or the extension surface. Accordingly, the fastener element can be stably moved in the element passage 70 of the slider body 540, and the operability of the slider is improved. Moreover, it becomes easy to avoid the formation of the raised portion on the die mating surface described later. Accordingly, the fastener element can be stably moved in the element passage 70 of the slider body 540, and the operability of the slider is improved. Moreover, it becomes easy to avoid the formation of the raised portion on the die mating surface described later.

As can be understood from FIG. 9, the left raised portion 601 is at least between the front inner side surface 15 and the front inner side surface 15 extending from the rear inner side surface 13 on the same side as the position of the connecting column 530 to the connecting column 530 side. It is provided partially, more preferably provided in the whole area. In other words, the left raised portion 601 is disposed between the plane PL15 where the front inner side surface 15 exists and the extended surface PL13 which coincides with the plane where the rear inner side surface 13 exists.

Although not necessarily limited to this, in this example, the front inner side surface 15 is inclined between the first front inner side surface 11 oriented parallel to the rear inner side surface 13 and the first inner side surface 11 and the rear inner side surface 13. The second front inner surface 12 is connected. Therefore, although not necessarily limited to this, preferably, the left raised portion 601 is disposed between the plane PL11 where the first front inner side surface 11 of the left upper flange portion 511 exists and the extended surface PL13 of the rear inner side surface 13. The The plane PL11 and the extension surface PL13 are parallel to each other, but this is not necessarily the case. Although not necessarily limited to this, preferably, the left raised portion 601 is disposed between the plane PL12 where the second front inner side surface 12 of the left upper flange portion 511 exists and the extended surface PL13 of the rear inner side surface 13. The plane PL12 is a plane that obliquely intersects the plane PL11 and the extension surface PL13, and is set so as to face the connecting column 530.

The same applies to the right-side raised portion 602, and the right-side raised portion 602 includes an extension surface PL 13 ′ of the rear inner side surface 13 on the same side as the position of the connecting column 530 and the front inner side surface 15. It is provided at least partially in between, more preferably provided in the whole area. The right raised portion 602 is disposed between a plane PL15 'where the front inner side surface 15 of the right upper flange portion 521 exists and an extended surface PL13' which coincides with the plane where the rear inner side surface 13 exists.

Although not necessarily limited to this, preferably, the right raised portion 602 is disposed between the plane PL11 ′ where the first front inner surface 11 of the right upper flange portion 521 exists and the extended surface PL13 ′ of the rear inner surface 13. The The plane PL11 'and the extension surface PL13' are parallel to each other, but this is not necessarily the case. Although not necessarily limited to this, preferably, the right raised portion 602 is disposed between the plane PL12 ′ where the second front inner surface 12 of the right upper flange portion 521 exists and the extended surface PL13 ′ of the rear inner surface 13. The The plane PL12 ′ is a plane that obliquely intersects the plane 11 ′ and the extension surface PL <b> 13 ′, and is set so as to face the connecting column 530. Note that the plane PL12 and the plane PL12 'are set in a taper shape with an interval extending forward.

One or more of the above or not limited, but preferably when all conditions are satisfied, the moving space of the fastener element 400 can be constrained in a more sufficient range and extent, and the raised portion 600 can be The disadvantage of extending to the vicinity can be avoided. Furthermore, there is a case where it is possible to avoid the formation of the raised portion 600 on the die mating surface as in the configuration of the mold apparatus 80 described later.

As described above, when the space between the upper blade plate 510 and the lower blade plate 520 is set wide in consideration of the effect of thermal contraction due to resin cooling, the upper blade plate 510 and the lower blade plate 540 at the rear end of the slider body 540 after molding. The interval between the blades 520 is set appropriately in accordance with the vertical height of the fastener element 400. Therefore, if the above-described raised portion 600 is provided to extend from the front end side to the rear end side of the slider body 540, the vertical width on the rear opening side of the slider body 540 is unnecessarily restricted by the raised portion 600. The contact resistance of the fastener element 400 to the raised portion 600 at the rear end of the slider body 540 increases, and the operability of the slide fastener 90 may be deteriorated.

In the present embodiment, as described above, the left raised portion 601 is provided not in a region close to the connecting column 530 but in a region far from the connecting column 530 with the extended surface PL13 of the rear inner side surface 13 of the left upper flange portion 511 as a boundary. . The same applies to the relationship between the right raised portion 602 and the right upper flange portion 521. Accordingly, the fastener element can be stably moved in the element passage 70, and the operability of the slider is improved.

As shown in FIG. 10, when the fastener element 400 enters the slider body 540, the fastener element 400 enters the front opening whose vertical width is narrowed by the raised portion 600, and the fastener element 400 smoothly enters the slider body 540. Implementation is ensured. As shown in FIG. 11, when the fastener element 400 goes out from the slider body 540, the fastener element 400 is smoothly fed out from the rear opening of the vertical width set according to the vertical height of the fastener element 400.

Referring to FIGS. 12 and 13, the influence of thermal shrinkage due to resin cooling will be described. FIG. 12A shows a design model of a fastener slider, and FIG. 12B shows a model of the fastener slider after being molded using a resin material. As is clear from FIG. 12, the distance between the upper blade plate and the lower blade plate on the front end side of the slider body connected via the connecting pillars after the fastener slider is formed does not vary greatly, but the effect of the heat shrinkage of the resin material is not affected. There is a non-negligible reduction in the distance between the upper and lower blades on the rear end side of the slider fuselage, which does not have an easily connected column. For example, the solid line in FIG. 13 indicates the design model, and the broken line in FIG. 13 indicates the resin-made fastener slider after molding.

As described above, in the present embodiment, the raised portions 600 are provided on the left and right sides of the connecting column 530 on the front end side of the slider body 540. Even when the distance between the upper wing plate 510 and the lower wing plate 520 is set wide in consideration of the effect of heat shrinkage of the resin, the displacement of the fastener element 400 in the slider body 540 at the front end of the slider body 540 is sufficiently restricted. can do. In addition, reduce the thickness of the upper and lower wing plates or deal with them, or make the vertical dimension between the upper and lower wing plates on the rear mouth side wider than the upper and lower dimensions between the upper and lower wing plates on the front mouth side in the design model. However, there is a possibility that difficulty may arise from the viewpoint of pulling out the mold core.

FIG. 14 shows a parting line of the mold for forming the fastener slider by a broken line. FIG. 15 is a cross-sectional view of the mold apparatus on the planes Q1 to Q3 of FIG. As shown in FIG. 15, the mold apparatus 80 includes a first mold 810 that forms the connection column 530 from the front opening side of the slider body 540 and a second mold that forms the connection column 530 from the rear opening side of the slider body 540. A mold 820, a third mold 830 for molding the upper surface of the slider body 540, and a fourth mold 840 for molding the upper surface of the slider body 540 are provided. The mold parting line PL10 shown in FIG. 14 is a parting line between the first mold 810 and the second mold 820.

As shown in FIG. 15, the first mold 810 includes a mold upper surface 811 for forming the opposed main surface 515 of the upper blade plate 510 and a mold lower surface 812 for forming the opposed main surface 525 of the lower blade plate 520. Have Similarly, the second mold 820 has a mold upper surface 821 for molding the opposed main surface 515 of the upper blade plate 510 and a mold lower surface 822 for molding the opposed main surface 525 of the lower blade plate 520.

The mold upper surface 811 corresponds to the first molding surface (811) of the term specified in the claim at the time of filing. The mold upper surface 821 corresponds to the term fourth molding surface (821) specified in the claims at the time of filing.

The first mold 810 is provided with a pair of left and right recesses 30 for forming the above-described left and right raised portions 600, and the mold inclined surface 31 for forming the inclined surface 610 of the above-described raised portion 600. And a mold flat surface 32 for forming the flat surface 620 of the raised portion 600 described above. The depression 30 is not provided on the mold parting line PL10 of the first mold 810 and the second mold 820, but is provided apart from the mold parting line PL10. Therefore, the second mold is provided between the mold parting line PL10 and the depression 30. A mold upper surface 811 of the first mold 810 that is flush with the mold upper surface 821 of 820 is provided. Thereby, compared with the case where the hollow 30 adjoins the mold parting line PL10, generation | occurrence | production of a burr | flash can be reduced and the highly durable metal mold | die with which the acute angle part was reduced can be prepared. By improving the durability of the mold, the manufacturing cost of the fastener slider can be reduced.

As can be understood from the drawing, the first mold 810 and the second mold 820 define a space for forming the connecting column 530 in a state where the first mold 810 and the second mold 820 are combined. A structure is provided. The first mold 810 and the second mold 820 are provided with grooves for forming the left and right flange portions 550, respectively. The first mold 810 and the second mold 820 are provided with a structure that defines one groove for molding the flange portion in a state where the first mold 810 and the second mold 820 are combined.

It will be explained just in case it is clear in light of the explanation regarding the raised portion 600 described above. As can be understood from FIG. 15, the left dent 32 includes a plane PL 813 on which the molding surface 813 of the first mold 810 that molds the first front inner surface 11 of the left upper flange portion 511 described above and the above left upper portion. It arrange | positions between plane PL823 in which the molding surface 823 of the 2nd metal mold | die 820 which shape | molds the rear inner surface 13 of the flange part 511 exists. The same applies to the right-side recess 30, and the plane PL 814 on which the molding surface 814 of the first mold 810 for molding the first front inner surface 11 of the right upper flange portion 521 described above and the right upper flange portion 521 described above exist. The second mold 820 for molding the rear inner surface 13 is disposed between the planes PL824 where the molding surface 824 exists.

The molding surface 813 corresponds to the second molding surface (813) of the term specified in the claims at the time of filing. The molding surface 814 corresponds to the third molding surface (814) of the term specified in the claims at the time of filing. The molding surface 823 corresponds to the fifth molding surface (823) of the term specified in the claims at the time of filing. The molding surface 824 corresponds to the sixth molding surface (824) of the term specified in the claims at the time of filing.

In the present specification, the first, second, third, fourth, fifth, sixth to Nth (N is a natural number of 6 or more) are used to distinguish terms. The 1st, 2nd, 3rd, 4th, 5th, 6th to Nth (N is a natural number greater than or equal to 6) stated in the claims are allowed or scheduled to be appropriately revised by amendment after application. The

As shown in FIG. 15, molten resin is supplied to the molding cavity in the mold apparatus 80 via a runner (not shown) with respect to the mold apparatus 80 that has been matched, and the temperature is lowered by cooling the mold apparatus 80. The fastener slider 500 is formed by solidifying and taking out from the mold apparatus 80. At the initial stage of the temperature drop of the molten resin after the molten resin is supplied to the mold apparatus 80, the shape of the slider is in the same state as the design model shown in FIG. In this state, the dimension between the upper and lower blades narrowed by the raised portion on the front opening side of the slider body, that is, the distance between the raised portion of the opposed main surface of the upper blade plate and the opposed principal surface of the lower blade plate is the slider. A dimension difference Δh smaller than the dimension between the upper and lower blades on the rear opening side of the fuselage, that is, the distance between the opposing main surface of the upper blade and the opposing main surface of the lower blade is set. In this state, the vertical dimension of the opposing main surface where the raised portion 600 on the front opening side of the slider body is not present is approximately the same as the vertical dimension between the upper and lower blades on the rear opening side of the slider body.

This dimensional difference Δh is, for example, the vertical dimension between the upper and lower blades on the rear opening side of the slider body due to thermal contraction of the resin material as the temperature of the molten resin further advances after being removed from the mold or from the mold. Is narrower than the vertical dimension between the upper and lower blades on the front opening side. As a result, the value of the dimensional difference Δh described above is reduced.

Further, in the present embodiment, the state of the design model (or the temperature drop of the molten resin after the molten resin is supplied to the mold apparatus 80 is prevented so that the gap between the upper and lower flanges is not too narrow due to the influence of heat shrinkage. As shown in FIG. 12A showing the state of the initial stage), the rear opening side is formed wider than the front opening side. The interval between the upper and lower flanges on the rear port side is constituted by an inclined surface that gradually decreases gradually from the intermediate position of each flange toward the rear port side end. This inclined surface is provided on at least one flange portion of the upper and lower flange portions. Thereby, even if the vertical dimension between the upper and lower blades on the rear opening side of the slider body becomes narrower than the vertical dimension between the upper and lower blades on the front opening side due to the thermal contraction of the resin material as shown in FIG. A fastener tape insertion path between the upper and lower flanges can be secured.

That is, the fastener slider disclosed in this specification is manufactured based on a design model that assumes thermal contraction of the resin material, and the manufacturing method thereof is
(I) The upper wing plate (510) and the lower wing plate (520) are connected via a connecting column (530), and the fastener element (400) is interposed between the upper wing plate (510) and the lower wing plate (520). ) Is inserted, and a pair of flange portions (550) extending from the rear port side to the front port side of the slider body (540) are formed on the upper side. Preparing a plurality of molds for forming a fastener slider (500) provided on at least one of the blade (510) and the lower blade (520);
(Ii) A step of aligning the plurality of molds, and a space shape formed by the plurality of molds that have been combined is determined by the upper blade plate (510) and the lower blade plate (520). Forming a ridge (600) on at least one of the opposing major surfaces, and defining the ridge (600) to be disposed on the front opening side of the slider body (540);
(Iii) supplying molten resin to a space formed by the plurality of molds in a state in which the plurality of molds are combined with each other;
(Iv) lowering the temperature of the supplied molten resin and solidifying the molten resin;
(V) including a step of removing the solidified molten resin from the plurality of molds;
In the initial stage of the temperature drop, a first vertical dimension of a front opening of the slider body (540) is set by the raised main part (600) and the opposed main surface facing the raised part (600), and the raised part ( 600), a second vertical dimension of the rear opening of the slider body (540) that is larger than the first vertical dimension is set, and a dimensional difference Δh of a difference between the first vertical dimension and the second vertical dimension is set. Set,
After the further temperature decrease, the second vertical dimension of the rear opening of the slider body (540) is reduced, whereby the dimensional difference Δh after the further temperature decrease becomes smaller than the dimensional difference Δh in the initial stage of the temperature decrease.

The decrease in the dimensional difference Δh before and after the temperature decrease specified by the above-described manufacturing method is clear from the disclosure of the entire specification of the present application, in particular, referring to FIGS. 12 and 13, and redundant description is omitted. By using a slide fastener slider manufactured by such a mold device or manufacturing method, a slider manufactured from a resin material that is easily affected by heat shrinkage, especially a relatively large size slider or fastener element rotates. Even if it is a fastener element like patent document 1 and patent document 2 which are easy to do, since a fastener element can be stably guided within an element channel | path, the operativity of a fastener slider can be improved.

Based on the above teaching, those skilled in the art can make various modifications to the embodiments. Reference signs included in the claims are for reference only and should not be referenced for the purpose of limiting the scope of the claims. A person skilled in the art can immediately understand that each of the elements is distinguished using the first, second, and third expressions. For example, the left element may be grasped as the first element and the right element as the second element. “Contains”, “includes”, “have” and the like are open terms in principle unless indicated to the contrary, and includes addition of non-enumerated components other than the listed components. The term indicating a specific shape is not limited to such a specific shape, but also implies any degree of deformation of the specific shape.

90 Slide fastener

100 Fastener stringer 200 Fastener tape 210 Opposing side edge 400 Fastener element 450 Insertion recess

500 Fastener slider 510 Upper blade 520 Lower blade 530 Connecting column 540 Slider body 550 Flange 51 Inner surface 52 Inner surface 11 Front inner surface 12 Middle inclined surface 13 Rear inner surface

600 Raised part

PL11 plane PL13 extended surface (plane)
PL11 'plane PL13' extended surface (plane)

Claims (6)

A pair of fastener stringers (100) in which a plurality of fastener elements (400) are provided on the opposite side edge (210) of the fastener tape (200) is used, and each fastener element (400) of the pair of fastener stringers (100) is A pair of fastener stringers (100) comprising a tape insertion recess (450) into which the opposing side edge (210) of the fastener tape (200) of the other fastener stringer (100) to be paired can be inserted;
A fastener slider (500) for engaging and separating the fastener elements (400) of the pair of fastener stringers (100), wherein an upper blade plate (510) and a lower blade plate (520) are connected to a connecting column (530). And a slider body (540) formed with an element passage (70) through which the fastener element (400) is inserted between the upper wing plate (510) and the lower wing plate (520). A pair of flange portions (550) extending from the rear opening side to the front opening side of the slider body (540) are provided on at least one of the upper blade plate (510) and the lower blade plate (520), Each inner side surface (51, 52) of the pair of flange portions (550) includes a rear inner side surface (13) on the rear port side and a front inner surface (15) on the front port side, and Intervals of the inner front surface (15) of Nji portion (550), said wider than the spacing between the rear inner side (13) of the pair of flange portions (550), and fastener slider (500), provided with,
At least one of the opposing main surfaces (515, 525) of the upper wing plate (510) and the lower wing plate (520) is provided between the connecting column (530) and the front inner side surface (15). A pair of raised portions (600) are provided;
Each raised portion (600) is an extension of the rear inner surface (13) located on the same side as the raised portion (600) to the connecting column (530) side when compared with the position of the connecting column (530). A slide fastener provided at least partially between a surface (PL13, PL13 ′) and the front inner surface (15). The front inner surface (15) includes a first front inner surface (11), a second front inner surface (12) inclined between the first front inner surface (11) and the rear inner surface (13). ,
Each raised portion (600) is an extension of the rear inner surface (13) located on the same side as the raised portion (600) to the connecting column (530) side when compared with the position of the connecting column (530). The slide fastener according to claim 1, wherein the slide fastener is provided at least partially between a surface (PL13, PL13 ') and the first front inner surface (11). The fastener element (400) includes at least a round design portion (430) curved in a convex shape in the tape width direction and in the tape longitudinal direction so as to be in contact with the upper blade (510),
The slide fastener according to claim 1 or 2, wherein the pair of raised portions (600) is provided on the opposing main surface (515) of the upper blade (510). The slide fastener according to any one of claims 1 to 3, wherein the raised portion (600) includes an inclined surface (610) that faces the connecting column (530). The upper wing plate (510) and the lower wing plate (520) are connected via a connecting column (530), and the fastener element (400) is inserted between the upper wing plate (510) and the lower wing plate (520). And a pair of flange portions (550) extending from the rear opening side toward the front opening side of the slider body (540). 510) and a mold apparatus (80) for molding a fastener slider (500) provided on at least one of the lower blade (520),
A first molding surface (811) for molding at least one opposing main surface (515, 525) of the upper wing plate (510) and the lower wing plate (520), and inner surfaces of the pair of flange portions (550) A first mold (810) including a second molding surface (813) and a third molding surface (814) for molding (51, 52);
A second mold (820) which is combined with the first mold (810) to mold the connecting pillar (530) together with the first mold (810), the upper wing plate (510) and A fourth molding surface (821) for molding at least one opposed main surface (515, 525) of the lower wing plate (520), and inner surfaces (51, 52) of the pair of flange portions (550) are molded. A second mold (820) including a fifth molding surface (823) and a sixth molding surface (824),
The first molding surface (811) of the first mold (810) is provided with a pair of depressions (30), wherein the second mold (820) is provided in the first mold (810). In the mold-matched state, one of the pair of indentations (30) is at least partly a plane (PL813) on which the second molding surface (813) of the first mold (810) exists and the first The second mold (820) is provided between the planes (PL823) where the fifth molding surface (823) is present, and the other of the pair of depressions (30) is at least partly in the first mold ( 810) is provided between the plane (PL814) on which the third molding surface (814) exists and the plane (PL824) on which the sixth molding surface (824) of the second mold (820) exists. Mold device. (I) The upper wing plate (510) and the lower wing plate (520) are connected via a connecting column (530), and the fastener element (400) is interposed between the upper wing plate (510) and the lower wing plate (520). ) Is inserted, and a pair of flange portions (550) extending from the rear port side to the front port side of the slider body (540) are formed on the upper side. Preparing a plurality of molds for forming a fastener slider (500) provided on at least one of the blade (510) and the lower blade (520);
(Ii) A step of aligning the plurality of molds, and a space shape formed by the plurality of molds that have been combined is determined by the upper blade plate (510) and the lower blade plate (520). Forming a ridge (600) on at least one of the opposing major surfaces, and defining the ridge (600) to be disposed on the front opening side of the slider body (540);
(Iii) supplying molten resin to a space formed by the plurality of molds in a state in which the plurality of molds are combined with each other;
(Iv) lowering the temperature of the supplied molten resin and solidifying the molten resin;
(V) including a step of removing the solidified molten resin from the plurality of molds;
In the initial stage of the temperature drop, a first vertical dimension of a front opening of the slider body (540) is set by the raised main part (600) and the opposed main surface facing the raised part (600), and the raised part ( 600), a second vertical dimension of the rear opening of the slider body (540) that is larger than the first vertical dimension is set, and a dimensional difference Δh of a difference between the first vertical dimension and the second vertical dimension is set. Set,
After further temperature reduction, the second vertical dimension of the rear opening of the slider body (540) is reduced, whereby the dimensional difference Δh after further temperature decrease is smaller than the dimensional difference Δh in the initial stage of temperature decrease. Manufacturing method of fastener slider.

Images