CN113940486A

CN113940486A - Slider unlocking system and unlocking method

Info

Publication number: CN113940486A
Application number: CN202010678781.5A
Authority: CN
Inventors: 佐伯亮祐; 奥拓实; 金本阳一郎
Original assignee: YKK Corp
Current assignee: YKK Corp
Priority date: 2020-07-15
Filing date: 2020-07-15
Publication date: 2022-01-18
Anticipated expiration: 2040-07-15
Also published as: CN113940486B; TWI765408B; TW202203803A

Abstract

The invention provides a slider unlocking system which can stably operate a slider mounted on a zipper chain without depending on the shape of a pull piece, and is used for unlocking the locking function of the slider mounted with the pull piece and having the locking function and mounted on a continuous zipper chain. The pull tab can take a locking position for allowing the slider to perform a locking function and an unlocking position for unlocking the locking function. The lock release system includes: a slider stopping mechanism including a control unit for stopping a slider of a fastener chain moving to an upstream side or a downstream side in a conveying direction at a predetermined position; a pull tab stopper which comes into contact with or approaches the slider stopped at a prescribed position; and a pressing member for displacing the slider, which is in contact with or close to the tab stopper, toward an upstream side or a downstream side in the conveying direction of the fastener chain. The pull tab stopper restricts displacement of the pull tab with respect to the slider displaced by the pressing member, and relatively displaces the pull tab toward the lock release position.

Description

Slider unlocking system and unlocking method

Technical Field

The present invention relates to a slider unlocking system and a slider unlocking method, and more particularly, to a system and a method for unlocking a slider mounted on a fastener stringer in a process of continuously manufacturing a slide fastener based on a continuous fastener stringer.

Background

When a slide fastener having a synthetic resin fastener element (element) row is continuously mass-produced based on a continuous fastener chain, the following processing steps are generally performed in sequence. A step of forming a fastener chain by injection molding a synthetic resin element row at each of opposite edge portions of a pair of left and right long fastener tapes; a step of partially removing the element rows at predetermined intervals in the longitudinal direction of the fastener chain to form a spacer; a step of bonding a reinforcing film to a region of the fastener chain that sandwiches a part of the spacer; forming a perforated portion by perforating a part of the reinforcing film; a step of injection molding an open member; a step of assembling the opening member; cutting the fastener chain along the width direction at a portion corresponding to the perforated portion; and a step of injection molding the upper stop portion.

As one type of slider, a slider having a locking function is known. The locking function generally functions in the following manner: the pawl at the tip of the lock member is brought into contact with the element row arranged in the slider, thereby preventing relative movement with respect to the element row of the slider. The pawl of the locking member is in a locked state or an unlocked state depending on the posture and position of the pull-tab relative to the slider. Therefore, in the case where the slider is of the type having the locking function, in the step of threading the slider to the cut fastener unit, it is necessary to thread the slider to the fastener unit in a state where the locking function is released.

Further, the present inventors have found that, before the step of assembling the opener, the slider is inserted in one side into one of a pair of left and right fastener stringers in which fastener elements are injection-molded at each of opposite edge portions, and the opener is assembled while the fastener elements of the left and right fastener stringers are inserted into the slider, whereby the production efficiency of the slide fastener can be improved. At this time, the locking function of the slider needs to be released before the opener is assembled.

As a technique for releasing the locking function of the slider, the following techniques are known: the slider is fixed, and the hook is hooked in a loop hole of a pull-tab attached to the slider and moved, thereby releasing the lock. Further, international publication No. 2019/003318 discloses a technique of releasing a lock by displacing a pull tab with respect to a fixed slider by a lock releasing portion.

However, the above-described lock function releasing techniques are not applicable in some cases because the tab is displaced and the shape of the tab is different depending on the size of the ring hole or the like. In addition, neither technique is intended for a slider to be attached to a fastener chain, and if it is used in a manufacturing process of a slide fastener, it is considered that it is difficult to perform stable operation because it requires a dense and complicated adjustment.

Documents of the prior art

Patent document

Patent document 1: international publication No. 2019/003318

Disclosure of Invention

The present invention has been made in view of the above-described problems, and an object thereof is to provide a slider unlocking system and a slider unlocking method that can stably operate a slider attached to a fastener chain without depending on the shape of a pull tab.

In order to solve the above problem, according to one aspect of the present invention, there is provided a slider lock release system for releasing a slider having a lock function and a pull tab attached thereto, which is attached to a continuous fastener chain, the slider lock release system characterized by: the pull tab is capable of taking a lock position for causing the slider to exert the lock function and an unlock position for unlocking the lock function, and the unlock system includes: a slider stopping mechanism including a control unit for stopping the slider of the fastener chain at a predetermined position while moving to an upstream side in a conveying direction or to a downstream side in the conveying direction; a pull tab stopper that comes into contact with or approaches the slider stopped at the prescribed position; and a pressing member for displacing the slider, which is in contact with or in proximity to the pull-tab stopper, toward an upstream side in a conveying direction or a downstream side in the conveying direction of the fastener chain, wherein the pull-tab stopper restricts displacement of the pull-tab with respect to the slider displaced by the pressing member, and relatively displaces the pull-tab toward the lock release position.

In the present invention, first, the slider of the continuous fastener chain attached to the slide fastener chain moving toward the upstream side in the conveying direction or the downstream side in the conveying direction is stopped at a predetermined position by the slider stopping mechanism. The slider stop mechanism includes a control portion. The control unit can stop the slider at a predetermined position by stopping the drive roller of the fastener chain when the sensor detects the slider, for example. After the slider is stopped at a predetermined position, the slider is held by the pressing member. At this time, the posture of the slider is adjusted by pressing the member. Then, the tab stopper is brought into contact with or close to the slider stopped at the predetermined position. The slider is displaced to the upstream side in the conveying direction or to the downstream side in the conveying direction by the pressing member. At this time, the tab stopper limits the displacement of the tab with respect to the slider displaced by the pressing member. Thereby, the pull tab is relatively displaced toward the unlocking position with respect to the displaced slider, and the locking function can be unlocked. Further, normally, the pull-tab is located at the locking position before the slider is displaced by the pressing member, and the pull-tab is relatively displaced from the locking position toward the unlocking position with respect to the slider displaced by the pressing member, but the pull-tab may be located at the unlocking position before the slider is displaced by the pressing member. Even in the latter case, the pull-tab can be reliably disposed at the unlocking position by relative displacement with respect to the slider.

Generally, the locking function of the slider functions in the following manner: the pawl at the tip of the lock member (see fig. 27) is brought into contact with the element row in the slider, thereby preventing the slider from moving relative to the element row. Such a locking function is set to a locked state or an unlocked state depending on the position of a pull tab attached to the slider relative to the slider. That is, the pull tab can take a lock position for allowing the slider to perform a lock function and an unlock position for unlocking the lock function.

In one embodiment of the present invention, the slider is inserted through one of a pair of left and right fastener stringers constituting the fastener chain. Even in this case, the slider can be stopped at a predetermined position by the slider stopping mechanism, and the pull-tab is relatively displaced toward the unlocking position by displacing the slider by the pressing member after the pull-tab stopper is brought into contact with or close to the slider.

In one embodiment of the present invention, the pressing member includes a pair of left and right pressing members that displace the slider by pressing left and right inclined side portions of the slider stopped at the predetermined position. The slider includes an upper blade and a lower blade connected by a connecting post, and the upper and lower blades normally have left and right inclined side portions whose left and right widths gradually increase from a rear opening toward a pair of left and right shoulder opening sides (see fig. 17). In the present embodiment, the slider can be displaced by pressing the left and right inclined side portions of the slider with the pair of left and right pressing members, and moving the inclined side portions of the slider relative to the pressing members, so that the slider is pressed toward the shoulder opening side from between the left and right pressing members.

In one embodiment of the present invention, the pair of left and right pressing members can obtain an initial position, a holding position where the holding position is brought into contact with the left and right inclined side portions of the slider stopped at the predetermined position to adjust the posture of the slider, and a pressing position where the left and right inclined side portions of the slider are pressed. In the present embodiment, the left and right pressing members come into contact with the left and right inclined side portions of the slider stopped at the predetermined position with a weak force, that is, a force of a degree not to displace the slider, by moving from the initial position to the holding position, thereby playing a role of adjusting the posture of the slider. Then, by moving the left and right pressing members from the holding position to the pressing position, the slider is pressed toward the shoulder opening side from between the left and right pressing members, and the slider can be displaced.

In one embodiment of the present invention, each of the pair of left and right pressing members includes a disk-shaped pressing portion. In this case, the slider can be easily moved by pressing the inclined side portion of the slider with the circumferential side surface of the disk-shaped pressing portion.

In one embodiment of the present invention, the slider stopping mechanism includes a sensor capable of detecting the slider, and the control unit stops the movement of the fastener chain when the sensor detects the slider. In this aspect, when the sensor detects the slider, the sensor transmits a detection signal to the control unit, and the control unit stops the drive roller of the fastener chain based on the detection signal to stop the fastener chain, thereby stopping the slider at a predetermined position.

In one embodiment of the present invention, the slider stopping mechanism includes a slider stopper that restricts movement of the slider stopped at the predetermined position to a downstream side in the conveying direction or an upstream side in the conveying direction. In this case, the slider stopped at the predetermined position is restricted from moving to the downstream side in the conveying direction or to the upstream side in the conveying direction by the slider stopper.

In one embodiment of the present invention, the control portion controls movement of the tab stopper, the pressing member, and the slider stopper. In this case, the control portion controls the movement of the tab stopper, the pressing member, and the slider stopper between the initial position and the operating position. The operating position of the pressing member may include the holding position and the pressing position. The operating position of the pull-tab stopper is a position in contact with or close to the slider.

In one embodiment of the present invention, the slider includes a posture adjustment mechanism for adjusting a posture of the slider stopped at the predetermined position. By adjusting the posture of the slider at a predetermined position by the posture adjustment mechanism, the pull-tab stopper can be accurately applied to the slider or the slider can be reliably displaced by the pressing member. As the posture adjustment mechanism, the pair of left and right pressing members described above can be used. The left-right pressing member can contribute to the adjustment of the posture of the slider at the holding position. As the posture adjustment mechanism, a member (slider support member) or the like capable of supporting the slider may be used alternatively or additionally to the pair of left and right pressing members.

According to another aspect of the present invention, there is provided a slider unlocking method for unlocking a slider having a locking function and a pull tab attached thereto, the slider being attached to a continuous fastener chain, the slider unlocking method including: the pull tab is capable of taking a lock position for causing the slider to perform the lock function and an unlock position for unlocking the lock function, and the unlock method includes: a step (A) of stopping the slider of the fastener chain at a predetermined position while the slider is moving toward an upstream side or a downstream side in a conveying direction; a step (B) of bringing a tab stopper into contact with or close to the slider stopped at the predetermined position; and a step C of displacing the slider, which is in contact with or in proximity to the tab stopper, to an upstream side in the conveying direction or a downstream side in the conveying direction of the fastener chain, the tab stopper restricting the displacement of the tab with respect to the slider displaced in the step B, and relatively displacing the tab toward the unlocking position.

In the present invention, first, the slider attached to the continuous fastener chain moving toward the upstream side in the conveying direction or toward the downstream side in the conveying direction is stopped at a predetermined position (step a). Next, the tab stopper is brought into contact with or close to the slider stopped at the predetermined position (step B). The slider is moved to the upstream side in the conveying direction or to the downstream side in the conveying direction (step C). In step C, the tab stopper limits the displacement of the tab with respect to the displaced slider. Thus, the pull tab can be relatively displaced toward the unlocking position with respect to the displaced slider, and the locking function can be unlocked.

In one embodiment of the present invention, the slider is held by a pair of right and left pressing members after the step a and before the step B, and the posture of the slider is adjusted by the pressing members in the step D. By holding and adjusting the posture of the slider at a predetermined position by a pair of right and left pressing members, it is possible to accurately apply the tab stopper to the slider in the step B or reliably displace the slider in the step C.

In one embodiment of the present invention, the slider is inserted through one of a pair of left and right fastener stringers constituting the fastener chain. Even in this case, the pull-tab can be relatively displaced toward the unlocking position by stopping the slider at a predetermined position, and displacing the slider after the pull-tab stopper is brought into contact with or close to the slider.

In one embodiment of the present invention, the step C is performed by a pair of right and left pressing members pressing right and left inclined side portions of the slider stopped at the predetermined position. In the present embodiment, the slider can be displaced by pressing the left and right inclined side portions of the slider with the pair of left and right pressing members, and moving the inclined side portions of the slider relative to the pressing members, whereby the slider is pressed toward the shoulder opening side from between the left and right pressing members.

In one embodiment of the present invention, the step a includes adjusting an attitude of the slider stopped at the predetermined position. By adjusting the posture of the slider at the predetermined position, the pull-tab stopper can be accurately applied to the slider or the slider can be reliably displaced.

In one embodiment of the present invention, the step a includes restricting movement of the slider stopped at the predetermined position to an upstream side in the feeding direction or a downstream side in the feeding direction, and the step C cancels the restriction of the movement of the slider. In this case, the slider stopped at the predetermined position is restricted from moving upstream or downstream in the conveying direction in the step a. By releasing the restriction of the movement in step C, the slider can be displaced to the upstream side or the downstream side in the feeding direction.

Effects of the invention

In the present invention, by displacing the slider stopped at the predetermined position, the pull tab is relatively displaced toward the unlocking position with respect to the slider. Therefore, the locking function can be released without depending on the shape of the pull tab, and the slider attached to the fastener chain can be stably operated.

Drawings

Fig. 1 is an explanatory view schematically showing a synthetic resin slide fastener manufacturing apparatus.

Fig. 2 is a flowchart showing a processing step performed by the synthetic resin slide fastener manufacturing apparatus.

Fig. 3 is a plan view showing a continuous fastener chain taken out.

Fig. 4 is a plan view of the fastener chain in a state where the space portion is formed.

Fig. 5 is a plan view of the fastener chain in a state where the reinforcing film is adhered.

Fig. 6 is a plan view of the fastener chain in a state where the through hole portion is formed.

FIG. 7 is a top view of the zipper chain in an open state with a single side extending through the slider.

Fig. 8 is a plan view of the fastener chain in a state where the opener and the upper stopper are injection-molded.

Fig. 9 is a plan view showing a slide fastener chain changed from an open state to a closed state.

Fig. 10 is a plan view showing a lower die of the upper stop and opener injection molding mechanism on the back side of the fastener chain.

Fig. 11 is a schematic sectional view taken along line a-a of fig. 10.

Fig. 12 is a cross-sectional view similar to fig. 11 showing a state where the ejector pin is protruded from the upper stopper portion and the lower die of the opener injection molding mechanism.

Fig. 13 is a plan view showing a state in which the lower mold of the upper stopper and opener injection molding mechanism is moved to the right side of the fastener chain.

Fig. 14 is a plan view showing a slide fastener chain cut out from which a closed state is started by the chain closing mechanism.

Fig. 15 is a plan view of the fastener chain in a state of being conveyed downstream from the state of fig. 14.

Fig. 16 is a plan view of the slide fastener chain in a state where the socket body with the box pin and the insert pin are combined.

Fig. 17 is a plan view showing the completed slide fastener, showing a state in which the slider is pulled down from the top stop portion.

Fig. 18 is a side explanatory view showing a timing when the 2 nd sensor detects the slider of the fastener chain moving downstream in the conveying direction.

Fig. 19 is a plan view of the fastener chain at the time of fig. 18, showing a pair of left and right pressing members located at the initial positions.

Fig. 20 is a side explanatory view showing a timing at which the slider of the fastener chain is stopped at a predetermined position while moving upstream in the conveying direction by the slider stopping mechanism.

Fig. 21 is a block diagram showing a control configuration in the lock release system of the present invention.

Fig. 22 is a plan view of the fastener chain 10 corresponding to fig. 20 at the time when the slider is stopped at the predetermined position S.

Fig. 23 is a front explanatory view showing the slider and the right and left pressing members at the timing of fig. 22.

Fig. 24 is a plan view of the fastener chain at the time when the left and right pressing members are moved to the holding position.

FIG. 25 is a perspective view of a pull tab stop.

Fig. 26 is a perspective view showing a state in which the tab stopper is in contact with the slider at the operating position.

Fig. 27 is a partially enlarged side view of fig. 26, and the pull tab shows only the base end shaft portion.

Fig. 28 is a plan view of the fastener chain at the time when the left and right pressing members are moved from the holding position to the pressing position.

Fig. 29 is a side view showing a state where the slider is displaced to the upstream side in the feeding direction by the pressing member.

Fig. 30 is a partially enlarged side view similar to fig. 27.

Fig. 31 is a side explanatory view showing an embodiment including a modified example of the pull-tab stopper and the slider supporting member.

Fig. 32 is a side explanatory view showing an embodiment including a modification of the pull-tab stopper and the slider supporting member.

Fig. 33 is a side explanatory view showing an embodiment including a modification of the pull-tab stopper and the slider supporting member.

Fig. 34 is a plan view similar to fig. 24 showing a modification of the pressing member.

Description of the reference numerals

1 zipper tape

1a zipper teeth chain

1A 1 st tooth chain belt

1B No. 2 fastener chain

2 element row

3 puller

3e inclined side part

4 pulling sheet

5 pawl with locking function

10 zipper chain

11 spacer part

12 reinforcing film

13 perforated part

20 socket body with seat rod

21 plunger

22 upper stop part

30 zipper

100 synthetic resin zipper manufacturing device

110 st equipment

111 space generating mechanism

112 film bonding mechanism

113 perforating mechanism

120 nd device

121 slider unilateral punch-through mechanism

Injection molding mechanism for 122 upper stop part and opening part

130 rd equipment

131 chain combined mechanism

133 cutting mechanism

140 conveying mechanism

142 drive roller

150 control part

151 st sensor (sensor)

160 slider stop

170. 173 puller supporting part (attitude adjusting mechanism)

180. 183 pull tab stop

190. 193 pressing part (attitude adjusting mechanism)

192. 194 pressing part

S specified position

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to such embodiments. Fig. 1 is an explanatory view schematically showing a synthetic resin slide fastener manufacturing apparatus (hereinafter, also simply referred to as "slide fastener manufacturing apparatus") 100. Fig. 2 is a flowchart showing a processing step performed by the slide fastener manufacturing apparatus 100. Fig. 3 is a plan view showing the continuous fastener chain 10 in section. Fig. 4 is a plan view of the fastener chain 10 in a state where the spacer 11 is formed. Fig. 5 is a plan view of the fastener chain 10 in a state where the reinforcing film 12 is adhered. Fig. 6 is a plan view of the fastener chain 10 in a state where the through hole portion 13 is formed.

The slide fastener manufacturing apparatus 100 is an apparatus for continuously mass-producing a finished slide fastener 30 shown in fig. 17 by performing various processes described below on a continuous slide fastener chain 10 obtained by injection-molding synthetic

resin element rows

2, 2 on respective opposing edges of a pair of left and right long fastener tapes 1, 1 (see fig. 3). The fastener chain 10 may be said to include a pair of right and left

fastener stringers

1a, 1a having

element rows

2, 2 at opposite edges of the right and left

fastener tapes

1, 1. Referring to fig. 1, a slide fastener manufacturing apparatus 100 includes: 1 st device 110; the 2 nd device 120; the 3 rd device 130; and a conveying mechanism 140 for conveying the fastener chain 10 to the 1 st apparatus 110, next to the 2 nd apparatus 120, and next to the 3 rd apparatus 130. Hereinafter, the side to which the fastener chain 10 is sent is referred to as "downstream", and the side opposite to the downstream in the conveying direction is referred to as "upstream". In the slide fastener manufacturing apparatus 100, a 1 st buffer 150a and a 2 nd buffer 150b, in which the slide fastener chain 10 is stopped during processing, are provided between the 1 st facility 110 and the 2 nd facility 120 and between the 2 nd facility 120 and the 3 rd facility 130, respectively. The conveyance mechanism 140 includes: a guide roller 141 that guides the fastener chain 10 in a conveying path passing through the inside and outside of the 1 st apparatus 110, the 2 nd apparatus 120, and the 3 rd apparatus 130; rollers such as a drive roller 142 (see fig. 18 and the like) and a tension roller that feed the fastener chain 10 downstream and upstream in the conveying direction; a roller driving unit 142a (see fig. 21) such as a motor for rotating the driving roller 142 in the forward and reverse directions; and various components constituting the conveyance path. The conveying mechanism 140 can temporarily stop the conveyance of the fastener chain 10, reverse the conveying direction and convey the fastener chain to the upstream side, or change the conveying speed. By providing the 1 st buffer 150a and the 2 nd buffer 150b, the transport mechanism 140 can be driven independently of the 1 st apparatus 110, the 2 nd apparatus 120, and the 3 rd apparatus 130, respectively.

1 st apparatus

The fastener chain 10 in which the

element rows

2, 2 of the left and

right fastener stringers

1a, 1a are in the engaged state (closed state) is supplied to the 1 st device 110 by the conveying mechanism 140, but the left and

right fastener stringers

1a, 1a in which the

element rows

2, 2 are in the non-engaged state (open state) may be in the engaged state (closed state) in the 1 st device 110. The 1 st device 110 includes: a gap generating means 111 for partially removing the element rows 2 at predetermined intervals in the longitudinal direction of the fastener chain 10 to form a gap portion 11 between the opposing edges of the fastener tape 1; a film bonding mechanism 112 for bonding a reinforcing film 12 to a rectangular region of the left and

right fastener tapes

1, 1 of the fastener chain 10 on the upstream side of the spacer 11; and a punching mechanism 113 for forming a rectangular-shaped punching portion 13 on the downstream side in the reinforcing film 12. In the first apparatus 110, the fastener chain 10 is processed into the space portion 11, the reinforcing film 12, and the perforated portion 13 in an engaged state, so that the left and

right fastener tapes

1, 1 are not displaced during conveyance.

The space generating means 111 partially removes the left and right element rows 2 in the closed state at predetermined intervals in the longitudinal direction of the fastener chain 10. Thereby, a space portion 11 is formed between the opposing edges of the left and

right fastener tapes

1, 1. Referring to fig. 4, a relatively thick core portion 11a as a reinforcing portion remains at the facing edge portions of the fastener tapes 1 in the spacer portions 11. The presence or absence of the element row 2, the spacer portion 11, the perforated portion 13, and the like become the reference for positioning in the subsequent step, and are detected by a sensor and the like, not shown. The film bonding mechanism 112 bonds the reinforcing films 12 from both front and back sides of the fastener chain 10. The reinforcing film 12 functions as follows: the adhesion of the molten resin can be improved at the time of injection molding of the later-described openers (20, 21), and the operability can be improved by reinforcing both longitudinal end portions of the single slide fastener 30 as a final product. Referring to fig. 6, when forming the perforation portion 13, the perforation means 113 simultaneously perforates 2 through-holes 14, in total 4 through-holes, in each of the opposing edge portions of the left and

right fastener tapes

1, 1 on the upstream side of the perforation portion 13 in the reinforcing film 12.

2 nd apparatus

The fastener chain 10, in which the partition portion 11, the reinforcing film 12, the perforated portion 13, and the like are processed by the 1 st apparatus 110, stays at the 1 st buffer portion 150a, and is supplied to the 2 nd apparatus 120 by the conveying mechanism 140. The 2 nd device 120 includes: a slider one-side threading mechanism 121 for threading the slider 3 from the perforated portion 13 one side through the element row of the fastener stringer 1a of one (left side in fig. 7) of the left and

right fastener stringers

1a, 1a in an at least partially opened state; an upper stop and opener injection molding mechanism 122 for simultaneously injection molding the socket body 20 and the insert pin 21 of the seated pin as the opener of the upstream-side fastener unit 10B through which the slider 3 is inserted on one side, and the 2 upper stops 22 of the downstream-side fastener unit 10A adjacent to the upstream-side fastener unit 10B on the downstream side via the through hole 13; and a chain closing mechanism 123 for closing the

element rows

2, 2 of the left and

right fastener stringers

1a, 1a in the at least partially opened state.

Fig. 7 is a plan view of the fastener chain 10 in an open state after the slider 3 is inserted in one side. Fig. 8 is a plan view of the fastener chain 10 in a state where the openers (20, 21) and the upper stopper 22 are injection-molded. Fig. 9 is a plan view showing the fastener chain 10 changed from the open state to the closed state. The left and

right fastener stringers

1a, 1a in the closed state in the 1 st device 110 are partially opened at the upstream side and the downstream side of the slider unilateral penetrating mechanism 121 of the 2 nd device 120, at least in the vicinity of the perforated portion 13 to which the slider 3 is attached. Further, the slider 3 may be inserted one-side by completely opening the left and

right fastener stringers

1a, 1a upstream of the slider one-side insertion mechanism 121 of the device 2. In order to open the left and

right fastener stringers

1a, 1a in the closed state, the fastener chain 10 is conveyed downstream in a state where a non-illustrated engagement releasing member such as a pin is inserted into the hole 13, and the

element rows

2, 2 of the left and

right fastener stringers

1a, 1a are separated one by one from the engagement releasing member as a starting point, and are opened. For example, the conveying paths of the left and

right fastener stringers

1a, 1a may be branched in the vertical direction, and the

element rows

2, 2 of the left and

right fastener stringers

1a, 1a may be separated one by one from the branch point. Referring to fig. 7, in the present embodiment, the slider one-side threading mechanism 121 is configured to thread the left shoulder opening 3a of the slider 3 through the opposing edge portion where the reinforcing film 12 is adhered and the through hole 14 is formed from the through hole portion 13 of the left fastener stringer 1a, and thereafter, to feed the left and

right fastener stringers

1a, 1a downstream with respect to the slider 3, thereby disposing the slider 3 on the left element row 2 (of the upstream fastener unit portion 10B).

Referring to fig. 8, the upper stop and opener injection molding mechanism 122 injection molds the socket body 20 of the fastener stringer 1a on the left side of the upstream-side fastener unit portion 10B of the slider 3 on one side, the insert pin 21 on the right-side fastener stringer 1a, and the upper stop 22 on the left and

right fastener stringers

1a, 1a of the downstream-side fastener unit portion 10A. The fastener unit sections (10A, 10B) are portions of the continuous fastener chain 10 that eventually become the single slide fastener 30, and the upper stop and opener injection molding mechanism 122 simultaneously molds the openers (20, 21) of one of the 2 fastener unit sections (10A, 10B) and the upper stop 22 of the other.

Fig. 10 is a plan view showing the lower mold 124 of the upper stopper and opener injection molding mechanism 122 on the back side (back side in fig. 10) of the fastener chain 10. Fig. 11 is a schematic sectional view taken along line a-a of fig. 10. The upper-stopper/opener injection molding mechanism 122 includes a lower mold 124, an upper mold not shown, and a runner 125 for supplying molten resin into cavities of the lower mold 124 and the upper mold. The cavity of the lower mold 124 and the upper mold is divided into 4 cavity parts corresponding to the plunger 21, the socket body 20 with the socket bar, and the 2

upper stoppers

22, 22. The runner 125 branches from a sprue 126 serving as a gate for the molten resin into 4 cavity portions. The socket body 20 with a box pin is formed at the opposite edge of the fastener stringer 1a on the left side of the upstream-side fastener element portion 10B, to which the reinforcing film 12 is bonded, on the upstream side (upper side in fig. 10) of the through hole portion 13. The insert pin 21 is formed at an opposite edge portion corresponding to the socket body 20 of the fastener stringer on the right side of the upstream fastener stringer unit portion 10B. The 2

upper stoppers

22 and 22 are formed adjacent to the upstream ends of the

element rows

2 and 2 of the left and

right fastener stringers

1a and 1a of the downstream-side fastener unit portion 10A. When the socket body 20 and the insert pin 21 of the fastener tape 1 are injection molded, the molten resin is also impregnated into the 4 through holes 14, and the resin solidified in the through holes 14 connects the socket body 20 and the insert pin 21 of the fastener tape 1 on the front and back sides. This can improve the fixing force of the receptacle body 20 and the insert pin 21 of the box pin to the fastener tape 1. After the injection-molded openers (20, 21) and the upper stopper 22 are solidified, the ejector pin 127 shown in fig. 11 retracted into the lower mold 124 is projected from the lower mold 124, whereby the openers (20, 21) and the upper stopper 22 can be separated from the runner 125 as shown in fig. 12. Next, as shown in fig. 13, the lower mold 124 (and the upper mold) moves in one of the left and right directions of the fastener chain 10 (the right side in fig. 13). This can suppress contact between the fastener chain 10 or the slider 3 and the runner 125 and the sprue 126 when the fastener chain 10 is conveyed downstream.

Fig. 14 is a plan view showing the fastener chain 10 in a cut-away state, in which the closed state is started by the chain closing mechanism 123. Fig. 15 is a plan view of the fastener chain 10 in a state of being conveyed downstream from the state of fig. 14. The chain closing mechanism 123 includes: a pair of right and left rod-shaped engaging members 123a, and a driving unit (not shown) for moving each engaging member 123a in the right and left direction. The driving section allows the respective engaging elements 123a to move between an initial position at which they are separated from each other and a close position at which they are close to each other and the fastener chain 10 is sandwiched so that the left and

right element rows

2, 2 are engaged with each other. Although not shown, each engaging member 123a is provided with a tape groove for receiving the fastener tape 1 when it is at the close position. After the slider 3 is once inserted into the fastener stringer 10, the left and right engaging

elements

123a, 123a disposed on the upstream side of the position where the slider 3 is once inserted in the fastener stringer 10 in the conveying direction are moved from the initial position to the close position, and the left and

right element rows

2, 2 are partially engaged with each other. By conveying the fastener chain 10 downstream while the left and right engaging

elements

123a, 123a are once maintained at the close position, the left and

right element rows

2, 2 of the corresponding upstream-side fastener unit portion 10B can be closed to the upper end or the vicinity of the upper end. Then, the left and right engaging

members

123a, 123a return to the initial positions.

3 rd equipment

Fig. 16 is a plan view of the slide fastener chain 10 in a state where the socket body 20 with the box pin and the insert pin 21 are combined. Fig. 17 is a plan view showing the completed slide fastener 30, and shows a state in which the slider 3 is pulled down from the upper stopper 22. The 3 rd device 130 includes: a chain combining mechanism 131 for combining the socket body 20 with the socket bar and the plug bar 21; and a cutting mechanism 133 for cutting the fastener chain 10 in the width direction at a portion corresponding to the perforated portion 13. The chain combining mechanism 131 combines the socket body 20 with the bar holder and the bar 21 separated in the state of fig. 15. In fig. 16, the socket body 20 with a seat bar, not shown, of the downstream-side fastener unit portion 10A and the insert bar 21 are already combined, and after the combination, the downstream-side fastener unit portion 10A is conveyed to the downstream side, whereby the slider 3 of the downstream-side fastener unit portion 10A abuts against the upper stopper portion 22 and moves to the upper-stopper-portion regulation position where the further upward (upstream) movement thereof is regulated. The slider 3 can be moved relatively to a position before the upper stopper 22 shown in fig. 17, instead of abutting against the upper stopper 22. When the slider 3 is positioned at the upper stop portion restricting position as shown in fig. 16, most of the upper stop portion 22 is hidden in the slider 3. A slider pull-down mechanism for pulling down the slider 3 positioned at the upper stop regulation position may be additionally provided. The slider pull-down mechanism pulls down the slider 3 positioned at the upper stop portion restricting position to expose the upper stop portion 22. The exposed top dead center 22 can be automatically checked for proper formation by a checking mechanism using an image acquired by an imaging means such as a camera or a checking mechanism using a contact or non-contact sensor. Alternatively, whether or not the formation is normal can be checked by visual inspection of an operator. The visual inspection may be performed after the fastener chain 10 is cut into the slide fastener 30 by the cutting mechanism 133. The examination object of the examination function described above may include not only the upper portion 22 but also the openers (20, 21) or the lower portion. When the slider 3 having the combined openers (20, 21) is relatively moved to a position (see fig. 17) before the upper stopper 22, the inspection of the upper stopper 22 as described above can be performed in a subsequent step without adding a slider pull-down mechanism. Next, the fastener chain 10 is cut at a portion corresponding to the perforated portion 13 by the cutting mechanism 133, and a plurality of slide fasteners 30 are obtained. For convenience, the slider 3 in a state pulled down from the upper-stop regulation position by the slider pull-down mechanism is shown in fig. 17 showing the slide fastener 30 after cutting, but is cut by the cutting mechanism 133 after the slider 3 is pulled down. By being cut through the through-hole portion 13, a reinforcing film portion 12a as a part of the reinforcing film 12 remains at the upper end portion of the left and

right fastener stringers

1a, 1a of the slide fastener 30, and a reinforcing film portion 12b as a part of the reinforcing film 12 remains at the lower end portion of the

fastener stringers

1a, 1 a.

Next, several embodiments of a slider unlocking system and a slider unlocking method according to the present invention will be described with reference to the drawings, but the present invention is not limited to such embodiments. The socket body 20 of the box pin and the insert pin 21 are combined by the chain combining mechanism 131 of the 3 rd apparatus 130 while the slider 3 is stopped at the predetermined position S (see fig. 20) and the element rows 2 of the left and

right fastener stringers

1a, 1a are inserted through the stopped slider 3. Therefore, when the slider 3 has a locking function for the element row 2, the locking function of the slider 3 stopped at the predetermined position S needs to be released. The locking function generally functions in the following manner: by bringing the pawl 5 (see fig. 27) at the tip end of the lock member into contact with the element row 2 in the slider 3, the slider 3 is prevented from moving relative to the element row 2. Such a locking function is set to a locked state or an unlocked state depending on the position of the pull-tab 4 attached to the slider 3 relative to the slider 3. That is, the pull tab 4 can take a locking position for allowing the slider 3 to perform a locking function and an unlocking position for unlocking the locking function. The slider unlocking system and unlocking method according to the present invention unlock the slider 3 before the box body 20 with the box pin and the insert pin 21 are combined by the chain combining mechanism 131.

Hereinafter, the fastener stringer 1A of the fastener chain 10 on the left side through which the slider 3 is inserted on one side is also referred to as "1 st stringer 1A", and the fastener stringer 1A on the right side is also referred to as "2 nd stringer 1B". The socket body 20 with a bar is injection-molded in the 1 st stringer 1A, and the insert bar 21 is injection-molded in the 2 nd stringer 1B. Referring to fig. 23, 26, and the like, the slider 3 includes the above-described locking function. The slider 3 includes an upper blade 3b, a lower blade 3c, a semi-annular tab coupling portion 3d provided on the upper blade 3b, and a tab 4 attached to the tab coupling portion 3 d. In fig. 7 to 17, the pull tab 4 is not shown. The pull tab 4 has a ring hole 4a (see fig. 26) on a proximal end side (a side opposite to the free end), and the pull tab connecting portion 3d is inserted into the ring hole 4a to connect the pull tab 4 and the slider 3. The pull tab 4 is rotatable about a base end shaft portion 4b (see fig. 26), and the base end shaft portion 4b defines the base end side of the annular hole 4 a. The upper and

lower paddles

3b, 3c have left and right inclined side portions 3e (see fig. 24, 28, etc.) whose left and right widths gradually increase toward the shoulder opening (3a) side, which is the upstream side in the conveying direction. A pair of right and left pressing members 190, which will be described later, is set to act on the right and left inclined side portions 3e of the upper blade 3b of the slider 3. The slider 3 having one side inserted into the 1 st stringer 1A moves upstream or downstream in the conveying direction in the following posture: the upper blade 3b faces downward and the lower blade 3c faces upward, and the left and right shoulder openings (3a) face the upstream side in the conveying direction and the rear opening faces the downstream side in the conveying direction. Thus, the pull tab 4 comes under the fastener chain 10.

Fig. 18 is a side explanatory view showing a timing at which the slider 3 of the fastener chain 10 moving downstream in the conveying direction in the substantially horizontal conveying path is detected by the 2 nd sensor 152. The 2 nd sensor 152 transmits a detection signal of the slider 3 to the control portion 150 (see fig. 21), and the control portion 150 reversely rotates the driving roller 142, which has been previously rotated in the forward direction, via the roller driving portion 142a (see fig. 21). Thereby, the fastener chain 10 starts moving upstream in the conveying direction. At this time, the slider stopper 160, the slider supporting member 170, and the tab stopper 180, which will be described later, are located at the lower initial position. Fig. 19 is a plan view of the fastener chain 10 at the time of fig. 18, showing a pair of left and right pressing members 190 at the initial position. In fig. 19, 22, 24, 28, and 34, the element row 2 is not shown. At the time of fig. 19, the pair of right and left pressing members 190 are located at initial positions away from each other. The left-right pressing member 190 is located at a position corresponding to a predetermined position S (see fig. 20) where the slider 3 is stopped in the conveying direction, strictly speaking, at a position corresponding to the left-right inclined side portion 3e of the slider 3 stopped at the predetermined position S (inclined side portion corresponding position). Each pressing member 190 includes a support rod 191 and a disk-shaped pressing portion 192 connected to a shaft portion on one end side of the support rod 191. The other end of the support rod 191 is connected to a pressing member driving unit 190a (see fig. 21). At the above-described inclined side portion corresponding position in the conveying direction, the left-right pressing member 190 can be moved to the following positions: an initial position where the pressing portions 192 are away from each other; a holding position (see fig. 24) at which the left and right pressing portions 192 come close to each other and contact the inclined side portion 3e of the slider 3 located at the predetermined position S; and a pressing position (see fig. 28) at which the left and right pressing portions 192 press the inclined side portion 3e of the slider 3 by slightly approaching each other from the holding position. The left-right pressing member 190 can adjust the posture of the slider 3 by contacting the left-right inclined side portion 3e of the slider 3 stopped at the predetermined position S at the holding position. The left-right pressing member 190 can displace the slider 3 toward the upstream side in the conveying direction by pressing the left-right inclined side portion 3e of the slider 3 by displacing from the holding position to the pressing position.

Fig. 20 is a side explanatory view showing a timing at which the slider 3 of the fastener chain 10 is stopped at the predetermined position S while moving upstream in the conveying direction in the conveying path by the slider stopping mechanism. Fig. 21 is a block diagram showing a control configuration in the lock release system of the present invention. Fig. 18 and 20 show the following cases: since the fastener chain 10 moves in a state where the insert pin 21 of the 2 nd fastener tape 1B is placed on the socket body 20 of the tape seat bar of the 1 st fastener tape 1A, the 2 nd fastener tape 1B is partially shifted upward with respect to the 1 st fastener tape 1A. Reference numeral 153 in fig. 18 and 20 denotes a plunger guide member constituting a part of the combining mechanism 131. The insert pin guide member 153 is a member for guiding the insert pin 21 of the 2 nd fastener tape 1B to the front of the shoulder opening on the non-one-side threading side of the slider 3 (the side to which the slider 3 is not attached) stopped at the predetermined position S. Reference numeral 154 in fig. 18 and 20 denotes a movement guide that guides the movement of the fastener chain 10. The plunger guide 153 incorporates the 1 st sensor 151. When the 1 st sensor 151 detects the slider 3 approaching the predetermined position S, a detection signal is sent to the control unit 150, and the control unit 150 causes the following operation.

The control section 150 stops the rotation of the driving roller 142 via the roller driving section 142 a. Thereby, the movement of the fastener chain 10 to the upstream side in the conveying direction is stopped, and the slider 3 is stopped at the predetermined position S (step a). Therefore, the 1 st sensor 151, the control unit 150, the roller driving unit 142a, and the driving roller 142 constitute a slider stopping mechanism. Further, the control portion 150 moves the slider stopper 160, which is located at the lower initial position up to that point, to the upper operating position via the slider stopper driving portion 160 a. The slider stopper 160 at the operating position restricts the slider 3 stopped at the predetermined position S from moving upstream in the conveying direction. Further, the slider 3 may be stopped at the predetermined position S by the slider stopper 160. The slider stopper 160 can also be said to be a constituent of the slider stop mechanism. Further, the control unit 150 moves the slider support member 170, which is located at the lower initial position up to that point, to the upper operation position via the slider support member driving portion 170 a. As shown in fig. 18, the slider support member 170 has a substantially horizontal slider support surface 171 on the upstream side in the conveying direction and a tab support surface 172 inclined downward from the slider support surface 171 to the downstream side in the conveying direction. The slider support surface 171 of the slider support member 170 at the operating position functions to support the slider 3 at the predetermined position S and adjust the posture of the slider 3 together with the pair of left and right pressing members 190. Therefore, the slider supporting member 170 and the pressing member 190 constitute a posture adjustment mechanism. The tab supporting surface 172 of the slider supporting member 170 at the operating position displaces the tab 4 attached to the slider 3 toward the downstream side in the conveying direction with respect to the slider 3, and supports the tab 4 in a state of being inclined downward toward the downstream side in the conveying direction. Since the tab 4 is shifted to the downstream side in the conveying direction with respect to the slider 3 located at the predetermined position S, the tab stopper 180 described later does not sandwich the tab 4 between the tab stopper 180 and the slider 3. Further, the tab 4 supported on the tab supporting surface 172 of the slider supporting member 170 is located at a locking position where the slider 3 performs a locking function. Further, the control unit 150 moves the left and right pressing members 190 from the initial position (see fig. 19 and 22) to the holding position (see fig. 24) via the pressing member driving unit 190 a. At the moment of fig. 20, the tab stop 180 is still in the lower initial position. In the present embodiment, the tab stopper 180 is disposed between the slider stopper 160 and the slider support member 170 in the conveying direction.

Fig. 22 is a plan view of the fastener chain 10 corresponding to fig. 20 at the time when the slider 3 is stopped at the predetermined position S. Fig. 23 is a front explanatory view showing the slider 3 and the left-right pressing member 190 at the timing of fig. 22, and the fastener chain 10 is not shown. At the time of fig. 22 and 23, the control unit 150 causes the left-right pressing member 190 to start moving from the initial position to the holding position. Fig. 24 is a plan view of the fastener chain 10 when the left and right pressing members 190 are moved to the holding position. At the holding position, the pressing portion 192 of each pressing member 190 is brought into contact with the inclined side portion 3e of the upper blade 3b located below the slider 3 with a weak force to adjust the posture of the slider 3 (step D). After moving the left-right pressing member 190 from the initial position to the holding position, the control unit 150 raises the tab stopper 180 located at the initial position located downward up to that point upward. Thereby, the tab stopper 180 comes into contact with or approaches the slider 3 at the predetermined position S (step B) (see fig. 26). Thereafter, the control portion 150 returns the slider stopper 160 and the slider supporting member 170, which are located at the operating positions, to the lower initial positions, respectively.

Fig. 25 is a perspective view of the pull-tab stop 180. Fig. 26 is a perspective view showing a state where the tab stopper 180 is in contact with the slider 3 at the operating position. Fig. 27 is a side explanatory view of fig. 26, and the pull tab 4 shows only the base end shaft portion 4 b. The tab stopper 180 includes left and right 2 leg portions 181 protruding upward and a concave portion 182 recessed downward relative to each other between the 2 leg portions 181. The recess 182 is a space that opens upward and toward the downstream side in the conveying direction and the upstream side in the conveying direction. Referring to fig. 26 and 27, the upper surfaces of the 2 legs 181 of the tab stopper 180 at the operating position are in contact with the upper wing plate 3b of the slider 3. The upper surface of the 2 leg portions 181 may be close to the upper wing plate 3 b. As described above, the tab supporting surface 172 of the slider supporting member 170 displaces the tab 4 to the downstream side in the conveying direction (the right side in fig. 27), and therefore the leg portion 181 of the tab stopper 180 does not sandwich the tab 4 between the leg portion 181 and the upper wing plate 3b of the slider 3. Thereby, the tab 4 is disposed downstream in the conveying direction from the tab stopper 180 at the operating position. In fig. 26, which shows the timing of applying the pull-tab stopper 180 to the slider 3, the pull-tab 4 is shown in a locked position, being lifted substantially horizontally. However, the tab 4 may be located at the unlocking position at the time of fig. 26. Further, the tab stopper 180 at the operating position partially accommodates the tab coupling portion 3d of the slider 3 in the recess 182. In other words, the tab stopper 180 obtains an operation position by avoiding the tab coupling portion 3d through the concave portion 182. The concave portion 182 allows passage of the tab coupling portion 3d of the slider 3 displaced upstream in the conveying direction (left side in fig. 27) from the state of fig. 26 and 27, but does not allow displacement of the tab 4 upstream in the conveying direction. That is, the tab stopper 180 at the operating position allows the slider 3 to be displaced upstream in the conveying direction, but restricts the displacement of the tab 4 upstream in the conveying direction.

Fig. 28 is a plan view of the fastener chain 10 at the time when the left-right pressing member 190 is moved from the holding position to the pressing position. When the left and right pressing members 190 move to the pressing position, the pressing portions 192 of the pressing members 190 press the left and right inclined side portions 3e of the slider 3. Thereby, the inclined side portion 3e of the slider 3 moves relative to the peripheral side surface 192a (see fig. 23) of each pressing portion 192, and the slider 3 is displaced toward the upstream side in the conveying direction (the left side in fig. 28) (step C). Fig. 29 is a side view showing a state where the slider 3 is displaced to the upstream side in the feeding direction by the pressing member 190. Fig. 30 is a partially enlarged side view similar to fig. 27. The left-right pressing member 190 presses the inclined side portion 3e of the slider 3 at the pressing position, and displaces the slider 3 from the position of fig. 27 toward the position of fig. 29 and 30 toward the upstream side in the conveying direction (the left side in fig. 27 and 28), and at this time, the tab stopper 180 is kept in a stationary state. The tab stopper 180 in the stationary state restricts the displacement of the tab 4 of the slider 3 to the upstream side in the conveying direction, which is to follow the displacement to the upstream side in the conveying direction, and relatively displaces the position of the base end shaft portion 4b of the tab 4 in the tab coupling portion 3d of the slider 3 to the downstream side end in the conveying direction or a position in the vicinity thereof, that is, to the lock release position, as shown in fig. 29. Thereby, the pawl 5 shown in fig. 27 is retracted, and the locking function of the slider 3 is released.

Fig. 31 to 33 are side explanatory views showing an embodiment of a modification including a pull-tab stopper and a slider supporting member. In fig. 31 to 33, the same reference numerals are used for the common components as those of the embodiment described with reference to fig. 18 to 30, and the description thereof is omitted. Fig. 31 shows a timing when the slider 3 is stopped at the predetermined position S by the slider stopping mechanism (step a) and the slider stopper 160 and the slider supporting member 173 are raised to the operating position. At this point the pull tab stop 183 is in a lower initial position. In the present embodiment, the slider supporting member 173 is disposed between the slider stopper 160 and the tab stopper 183, and the tab stopper 183 is disposed adjacent to the slider supporting member 173 on the downstream side in the conveying direction. The tab stopper 183 has a tip end 183a that is inserted into an annular hole 4a (see fig. 26) of the tab 4 at the operating position. The slider support member 173 is provided with a recess (not shown) that can partially accommodate the tab coupling portion 3d of the slider 3 at the operating position. The pull tab 4 is sandwiched between the slider support member 173 and the upper wing plate 3b of the slider 3 at the operating position. Thereby, the pull tab 4 is lifted substantially horizontally. The slider support member 173 at the operating position is a posture adjustment mechanism capable of adjusting the posture of the slider 3 via the pull-tab 4. Next, as shown in fig. 32, the tab stopper 183 is raised to the action position. Thereby, the tip end portion 183a of the tab stopper 183 is inserted into the annular hole 4a of the tab 4. The tab stopper 183 moved to the operating position is said to be close to the slider 3 at the predetermined position S (step B). Immediately before the time point of fig. 32, the left-right pressing member 190 moves to the holding position to adjust the posture of the slider 3 (step D). Next, when the left-right pressing member 190 is moved from the holding position to the pressing position, the slider 3 is moved to the upstream side in the conveying direction as shown in fig. 33 (step C). At this time, the tab 4 is restricted from being displaced to the upstream side in the feeding direction by the tab stopper 183 and is displaced to the downstream side in the feeding direction relative to the slider 3. Thereby, the pull tab 4 is located at the unlocking position, and the locking function of the slider 3 is unlocked. Further, as shown in fig. 33, immediately before the left and right pressing members 190 move to the pressing position, the slider stopper 160 and the slider supporting member 173 return to the initial position.

Fig. 34 is a plan view similar to fig. 24 showing a modification of the pressing member. The pressing member 193 in fig. 34 has a pressing portion 194 of a hemispherical shape on the side contacting the right and left inclined side portions 3e of the slider 3. The pressing portion 194 also acts on the left and right inclined side portions 3e of the slider 3 in the same manner as the circular plate-shaped pressing portion 192 described above, and can displace the slider 3 toward the upstream side in the conveying direction.

Claims

1. A slider lock release system for releasing a slider (3) having a lock function and mounted with a pull tab (4) attached to a continuous fastener chain (10), the slider lock release system characterized by:

the pull tab (4) can take a locking position for allowing the slider (3) to perform the locking function and an unlocking position for unlocking the locking function,

the lock release system includes:

a slider stopping mechanism including a control unit (150) for stopping the slider (3) of the fastener chain (10) at a predetermined position (S) while moving to the upstream side in the conveying direction or to the downstream side in the conveying direction;

a tab stopper (180, 183) that comes into contact with or approaches the slider (3) stopped at the prescribed position (S); and

a pressing member (190, 193) for moving the slider (3) that is in contact with or in proximity to the tab stopper (180, 183) to the upstream side in the conveying direction or to the downstream side in the conveying direction of the fastener chain (10),

the pull-tab stopper (180, 183) restricts displacement of the pull-tab (4) with respect to the slider (3) displaced by the pressing member (190, 193), and relatively displaces the pull-tab (4) toward the unlocking position.

2. The lock release system of a slider according to claim 1, wherein:

the slider (3) is inserted through one of a pair of left and right fastener stringers (1a) constituting the fastener chain (10) on one side.

3. The lock release system of a slider according to claim 1 or 2, characterized in that:

the pressing member (190, 193) includes a pair of left and right pressing members (190, 193), and the pair of left and right pressing members (190, 193) displace the slider (3) by pressing left and right inclined side portions (3e) of the slider (3) stopped at the predetermined position (S).

4. The unlocking system of a slider according to claim 3, wherein:

the pair of right and left pressing members (190, 193) can obtain an initial position, a holding position for adjusting the posture of the slider (3) by contacting with the right and left inclined side portions (3e) of the slider (3) stopped at the predetermined position (S), and a pressing position for pressing the right and left inclined side portions (3e) of the slider (3).

5. The unlocking system of a slider according to claim 3, wherein:

the pair of left and right pressing members (190) each include a disk-shaped pressing portion (192).

6. The lock release system of a slider according to claim 1 or 2, characterized in that:

the slider stopping mechanism includes a sensor (151) capable of detecting the slider (3), and the control unit (150) stops the movement of the fastener chain (10) when the sensor (151) detects the slider (3).

7. The lock release system of a slider according to claim 1 or 2, characterized in that:

the slider stop mechanism includes a slider stopper (160), and the slider stopper (160) limits the movement of the slider (3) stopped at the predetermined position (S) to the downstream side in the conveying direction or the upstream side in the conveying direction.

8. The lock release system of a slider according to claim 7, wherein:

the control unit (150) controls the movement of the tab stopper (180, 183), the pressing member (190, 193), and the slider stopper (160).

9. The lock release system of a slider according to claim 1 or 2, comprising:

and a posture adjustment mechanism (170, 173, 190, 193) for adjusting the posture of the slider (3) stopped at the predetermined position (S).

10. A slider unlocking method for unlocking a slider (3) having a locking function and mounted with a pull tab (4) and attached to a continuous fastener chain (10), the slider unlocking method characterized by:

the lock release method includes:

a step A of stopping the slider (3) of the fastener chain (10) at a predetermined position (S) while moving to the upstream side or the downstream side in the conveying direction;

a step (B) for bringing a tab stopper (180, 183) into contact with or close to the slider (3) stopped at the predetermined position (S); and

and a step C of displacing the slider (3) in contact with or in proximity to the tab stopper (180, 183) toward the upstream side in the conveying direction or the downstream side in the conveying direction of the fastener chain (10), wherein the tab stopper (180, 183) restricts displacement of the tab (4) with respect to the slider (3) displaced in the step B, and relatively displaces the tab (4) toward the unlocking position.

11. The method of releasing a slider according to claim 10, wherein:

the method comprises a step D of holding the slider (3) stopped at the predetermined position (S) by a pair of left and right pressing members (190, 193) after the step A and before the step B, wherein the posture of the slider (3) is adjusted by the pressing members (190, 193) in the step D.

12. The method of releasing the locking of the slider according to claim 10 or 11, wherein:

13. The method of releasing the locking of the slider according to claim 10 or 11, wherein:

the step C is performed by a pair of right and left pressing members (190, 193) pressing right and left inclined side portions (3e) of the slider (3) stopped at the predetermined position (S).

14. The method of releasing the locking of the slider according to claim 10 or 11, wherein:

the step A includes adjusting the posture of the slider (3) stopped at the predetermined position (S).

15. The method of releasing the locking of the slider according to claim 10 or 11, wherein:

the step A includes restricting movement of the slider (3) stopped at the predetermined position S to an upstream side in the conveying direction or a downstream side in the conveying direction, and the step C is configured such that restriction of movement of the slider (3) is released.