Pull tab penetration mechanism

Abstract

The present application provides a slider passing mechanism, which prevents the teeth from being damaged when the slider passes through the slider at high speed. The slider passing mechanism includes a slider holding mechanism (40, 140) including a slider holding portion (40a, 140a) holding a slider (1), left and right holding members (20) holding a zipper chain (10), and a moving mechanism (30) moving the holding members (20) holding the zipper chain (10) to pass the tooth row (12) of the zipper chain (10) from the back opening (5b) of the slider (1) held by the slider holding portion (40a, 140a) to the shoulder opening (5a) toward the downstream side. The slider holding mechanism (40, 140) includes a movable portion (50, 60, 160) allowing the slider (1) to be displaced toward the downstream side when the tooth row (12) contacts the slider (1).

Description

TECHNICAL FIELD

[0001] The present application relates to a slider threading mechanism, and more particularly to a mechanism for threading a slide fastener chain to a slider. BACKGROUND

[0002] In a process of manufacturing a plurality of slide fasteners using a long slide fastener chain, a slider threading is performed to thread the slide fastener chain to the slider. In the manufacturing of the slide fastener, a plurality of fastener elements are installed to each of facing edge portions of a pair of long slide fastener tapes constituting the slide fastener chain, the fastener elements are partially removed at regular intervals in the longitudinal direction to form interval portions, and the slide fastener chain is cut at the interval portions to obtain a pair of slide fastener tapes of a predetermined longitudinal unit length. The slider threading is generally a process of installing the slider to the slide fastener tapes.

[0003] REFERENCE Figure 6 , Figure 7 The slider 1 includes an upper wing plate 2, a lower wing plate 3, and a guide post 4 connecting the upper wing plate 2 and the lower wing plate 3. A substantially Y-shaped fastener element guide path 5 is defined between the upper wing plate 2 and the lower wing plate 3 of the slider 1. The fastener element guide path 5 is opened at 2 shoulder openings 5a on both sides of the guide post 4, and at 1 rear opening 5b on the opposite side of the guide post 4. In the slider threading, the fastener element rows 12 of the pair of slide fastener tapes 11 (see Figure 1 , etc.) are threaded in the fastener element guide path 5 of the slider 1, and the slider 1 is installed to the slide fastener tapes 11.

[0004] Japanese Patent Application Publication No. 2004-215771 (Patent Document 1) discloses a slide fastener processing apparatus including an example of a slider threading mechanism. In Patent Document 1, a one-way opening specification in which 1 slider is installed to a slide fastener tape and a reverse opening specification in which 2 sliders are installed to a slide fastener tape are described. In the one-way opening specification, there are a case in which the fastener element row of each slide fastener tape is threaded from the rear opening to the shoulder opening of the slider (see the document Figure 3 ), and a case in which the fastener element row is threaded from the shoulder opening to the rear opening (see the document Figure 4 ). In the reverse opening specification, there are a case in which the fastener element row of each slide fastener tape is threaded from the shoulder opening to the rear opening of 1 slider and then from the rear opening to the shoulder opening of the other slider (see the document Figure 5 ), and a case in which the fastener element row is threaded from the rear opening to the shoulder opening of 1 slider and then from the shoulder opening to the rear opening of the other slider (see the document Figure 6 ).

[0005] Reference is made to the document Figure 3The slider insertion mechanism described in Patent Literature 1 includes: a pair of left and right grippers 114 that hold the slide fastener chain 2; slider holding portions 120, 130 that hold the slider 1; a moving mechanism (gripper moving mechanism) for moving the grippers 114 in the X-axis direction along the length direction of the slide fastener chain 2 and in the Y-axis direction along the left and right direction, i.e., the width direction of the slide fastener chain 2; and a numerical control portion 140. The gripper moving mechanism includes an X-axis conveyance table 101, an X-axis drive motor 103, a gripper device 110, a moving table 111, a Y-axis conveyance table 113, a Y-axis drive motor 117, and the like. The gripper moving mechanism moves the grippers 114 in the X-axis direction and in the Y-axis direction based on an instruction from the numerical control portion 140. The numerical control portion 140 has various data related to the specifications of the dimensions, materials, and the like of various sliders, slide fastener chains, fastener stringers, and the like, data of movement trajectories corresponding to combinations of sliders and slide fastener chains, a program for timing control of the gripper moving mechanism, and the like (see Patent Literature 1, paragraphs 0019, 0020, 0045, 0051, and the like) stored in advance. The numerical control portion 140 moves the grippers 114 in the X-axis direction and in the Y-axis direction along a movement trajectory corresponding to a specific combination of a slider and a slide fastener chain having a fastener stringer, via the gripper moving mechanism, whereby the fastener stringer of the slide fastener chain held by the grippers 114 is inserted into the slider held by the slider holding portion.

[0006] Next, a case where the fastener stringer of the slide fastener chain 2 is inserted from the back opening to the shoulder opening of the slider 1 by the slider insertion mechanism disclosed in Patent Literature 1 and the like will be described with reference to the drawings. Figure 1 is a plan view immediately before the slide fastener chain 2 is inserted into the slider 1. At this time, the slider 1 is held by the slider holding portion, and the left and right fastener stringers 3 are in a state where the fastener stringers engage with each other, and are held by the left and right grippers 114. By the gripper moving mechanism, the grippers 114 are moved from Figure 1 from the time point of Figures 1-4 is moved to the lower side in the X-axis direction (the upper side in the paper surface of

[0007] Figure 2 is a plan view of the time point when the fastener stringers of the slide fastener chain 2 are inserted into the slider 1. The grippers 114 are moved from Figure 2 from the time point of Figure 3is a plan view showing a state in which a portion of the chain row of the slide fastener tape 3 on the downstream side comes to the outside of the slider 1. After several chain elements on the downstream side go out of the shoulder port of the slider 1, the movement of the jig 114 in the Y-axis direction is stopped, and only the movement in the X-axis direction downstream side is performed. In this way, the slider 1 is mounted to the slide fastener chain 2.

[0008] The jig moving mechanism moves the jig 114 in the X-axis direction and the Y-axis direction to advance the chain row of each slide fastener tape 3 along the predetermined movement track of the substantially Y-shaped chain element guide path of the slider 1.

[0009] The present inventors found that if the movement of the jig by the jig moving mechanism described above is made faster, the following undesirable situation can occur. Figure 4 is Figure 2 is an enlarged view of the loop C. When the chain row 12 of the slide fastener chain 10 is caused to enter the chain element guide path 5 from the rear port 5b of the slider 1 by the jig 20 moving at high speed (refer to Figure 2 and Figure 4 ), the chain row 12 exceeds the predetermined movement track, and the timing at which the chain rows 12 on the left and right sides start to separate is slightly delayed. Due to this, the chain element 12a at the very front on the downstream side collides with the guide post 4. Due to this, there is a case where several chain elements 12a from the very front on the downstream side are broken or damaged. Figure 5 is a plan view of the left slide fastener tape 11 conveniently showing the chain row in which breakage has occurred.

[0010] Prior Art Documents

[0011] Patent Documents

[0012] Patent Document 1: Japanese Patent Application Publication No. 2004-215771 SUMMARY

[0013] One of the objects of the present application is to provide a slider threading mechanism in which chain elements are not broken or the like when a slide fastener chain is caused to thread through a slider at high speed.

[0014] In order to solve the above problem, according to the present application, there is provided a slider threading mechanism including a slider holding mechanism including a slider holding portion that holds a slider, left and right holding members that hold a slide fastener chain, and a moving mechanism that moves the holding members holding the slide fastener chain to thread a chain row of the slide fastener chain from a rear port of the slider held by the slider holding portion toward a shoulder port on the downstream side, the slider holding mechanism including a movable portion that allows displacement of the slider to the downstream side in a case where the chain row contacts the slider.

[0015] In the present specification, the length direction of the slide fastener chain is the X-axis direction, and the slide fastener chain moves from the upstream side to the downstream side in the X-axis direction. In addition, the left-right (width) direction of the slide fastener chain is the Y-axis direction. In the present specification, a pair of slide fastener tapes on the left and right of the slide fastener chain cut to a predetermined length direction unit length is also referred to as a slide fastener chain.

[0016] In the puller passing mechanism according to the present application, the slide fastener chain is passed from the rear opening of the puller held by the puller holding portion toward the shoulder opening to the downstream side in the X-axis direction. The slide fastener chain is held by the left and right holding members, and the control portion moves the holding members in the X-axis direction and the Y-axis direction via the moving mechanism to advance along a movement track set in advance. Thus, the slide fastener chain is passed through the puller. If the movement of the holding members is made faster, there is a case where the chain row of the slide fastener chain comes into contact with the guide post of the puller beyond the movement track. In this case, in the present application, the puller is displaced to the downstream side in the X-axis direction by the movable portion to avoid the chain row, and damage or harm to the chain row can be prevented.

[0017] In the present application, as the moving mechanism, a cam mechanism or the like can be used in addition to the jig moving mechanism (the X-axis conveyance table 101, the X-axis drive motor 103, the jig device 110, the moving table 111, the Y-axis conveyance table 113, the Y-axis drive motor 117, and the like) described in Patent Document 1.

[0018] In one embodiment of the present application, the movable portion includes a downstream side step portion that defines at least a part of the puller holding portion and supports the puller when the puller is displaced to the downstream side, the puller holding mechanism includes a support portion that supports the movable portion so as to be displaceable, and an elastic member that applies a force to the movable portion to the upstream side in the X-axis direction. In this configuration, the movable portion that holds at least a part of the puller in the initial position, that is, the non-displaced position, is applied with a force to the upstream side in the X-axis direction by the elastic member. When the chain row of the slide fastener chain comes into contact with the guide post of the puller in this state, the puller comes into contact with the downstream side step portion of the movable portion to press the movable portion to the downstream side. Thus, the movable portion is displaced to the downstream side together with the puller against the force of the elastic member. At this time, the elastic member is compressed in the X-axis direction. When the chain row is no longer in contact with the guide post, the elastic member recovers, and the movable portion returns to the initial position on the upstream side together with the puller. As the elastic member, a spring, rubber, an elastomer, or the like can be used.

[0019] In one embodiment of the present application, the movable section includes a first movable section that defines a downstream side portion of the slider holding section and includes the downstream side stepped portion, and a second movable section that defines an upstream side portion of the slider holding section. In this configuration, the first movable section defines the downstream side portion of the slider holding section, the second movable section defines the upstream side portion of the slider holding section, and the slider is held across the upstream side portion and the downstream side portion. The downstream side stepped portion is provided to the first movable section. When the teeth row of the zipper chain comes into contact with the guide post of the slider, the first movable section supports the slider that is pressed toward the downstream side with the downstream side stepped portion and is displaced toward the downstream side together with the slider. At this time, the second movable section is displaced toward the downstream side due to friction with the slider that is displaced toward the downstream side. In this way, since the second movable section is also displaced together with the slider, the slider does not suffer damage. The support section supports the first movable section and the second movable section. Further, the support section can be divided into a first support section that supports the first movable section and a second support section that supports the second movable section.

[0020] In one embodiment of the present application, the slider includes a locking mechanism, and a pull tab that is capable of switching the locking and the unlocking of the locking mechanism according to the posture or position, and the slider holding mechanism includes an unlocking mechanism that is capable of maintaining the posture or position of the pull tab that unlocks the locking mechanism when the slider is displaced and when the slider is not displaced. The locking mechanism is a known mechanism that locks or unlocks the sliding of the slider with respect to the teeth row by protruding or retracting a locking claw with respect to the teeth guide path of the slider, and contacting or separating with respect to the teeth that are positioned in the teeth guide path. The unlocking mechanism in the slider holding mechanism is used to maintain the position or posture of the pull tab that unlocks the locking mechanism of the locking mechanism when the slider is displaced from the initial position and when the slider is positioned in the initial position (when the slider is not displaced). Thereby, even if the slider is displaced, the teeth row can be passed through the teeth guide path.

[0021] In one embodiment of the present application, a second elastic member that exerts a force toward the downstream side with respect to the second movable section is included. In this configuration, the first movable section is exerted with a force toward the upstream side by an elastic member (first elastic member), and the second movable section is exerted with a force toward the downstream side by the second elastic member. When the slider is displaced toward the downstream side in this state, the first movable section is displaced toward the downstream side against the force of the first elastic member, and the second movable section is displaced toward the downstream side due to the force of the second elastic member. Therefore, the second movable section can be displaced toward the downstream side together with the slider without depending on the friction between the second movable section and the slider. The spring constant of the second elastic member is set to be smaller than the spring constant of the first elastic member.

[0022] The zipper pull passing mechanism of the present invention includes a control unit for actuating the moving mechanism, wherein the control unit pre-stores the movement trajectory of the gripping member. The control unit moves the gripping member in the X-axis and Y-axis directions via the moving mechanism to advance along the pre-set movement trajectory, thereby passing the zipper chain teeth held by the gripping member through the zipper pull held by the zipper pull holding unit.

[0023] According to another aspect of the present invention, a zipper pull retaining mechanism is provided, comprising a zipper pull retaining portion for retaining a zipper pull through a zipper chain tooth row toward a downstream side, the zipper pull retaining mechanism including a movable portion that allows the zipper pull to displace toward the downstream side when the zipper chain tooth row contacts the zipper pull.

[0024] Invention Effects

[0025] In this invention, when the gripping component moves downstream at high speed via the moving mechanism, even if the zipper chain teeth exceed the movement trajectory and contact the guide post of the zipper head, the movable part can still displace the zipper head downstream to absorb the excess amount, thus preventing damage to the chain teeth. Therefore, the zipper chain can move at a higher speed during the zipper head's insertion process. Attached Figure Description

[0026] Figure 1 This is a top view of the zipper chain just before it passes through the zipper pull.

[0027] Figure 2 It is a top view of the moment when the first few teeth of the zipper chain on the downstream side enter the zipper pull.

[0028] Figure 3 It is a top view showing the state of a portion of the downstream side of the zipper teeth coming to the outside of the zipper pull.

[0029] Figure 4 yes Figure 2 A magnified view of circle C.

[0030] Figure 5 This is a top view showing the left zipper teeth of the damaged zipper chain for convenience.

[0031] Figure 6 This is a partial cross-sectional side view of the zipper pull holding mechanism in the first embodiment of the zipper pull passing mechanism of the present invention, with the zipper pull about to be held by the zipper pull holding mechanism shown above.

[0032] Figure 7 This is a perspective view of the first movable part, the second movable part, the spring, and the locking release mechanism, showing the pull head as well.

[0033] Figure 8is a block diagram schematically showing a control structure of the puller penetration mechanism.

[0034] Figure 9 is a plan view showing a state in which the puller 1 and the first movable portion 50 are displaced to the downstream side.

[0035] Figure 10 is a partial sectional side view showing the puller holding mechanism in the second embodiment of the puller penetration mechanism to which the present application is directed.

[0036] Explanation of Reference Numerals

[0037] 1 puller

[0038] 4 guide post

[0039] 5 chain guide path

[0040] 5a shoulder

[0041] 5b rear port

[0042] 6 pull tab

[0043] 10 chain

[0044] 11 chain tape

[0045] 12 chain row

[0046] 12a chain

[0047] 20 clamp (gripping member)

[0048] 30 moving mechanism

[0049] 40, 140 puller holding mechanism

[0050] 40a, 140a puller holding portion

[0051] 41 support portion

[0052] 41A first support portion

[0053] 41B, 141B second support portion

[0054] 42 spring (elastic member)

[0055] 80 control portion

[0056] 70 lock release mechanism

[0057] 71 lock release member

[0058] 71a lock release claw

[0059] 72 tension spring

[0060] 142 Second Spring (Second Elastic Component) Detailed Implementation

[0061] Hereinafter, based on the accompanying drawings, several embodiments of the zipper pull mechanism of the present invention will be described, but the present invention is not limited to such embodiments. The zipper pull mechanism includes: zipper pull holding mechanisms 40, 140, which hold the zipper pull 1 (see reference 1) Figure 6 , Figure 10 (etc.); the left and right clamps 20, which serve as gripping components, grip the zipper chain 10 (see reference). Figure 1 (etc.); a moving mechanism 30 for moving the clamp 20 in the X-axis direction and the Y-axis direction; and a control unit 80 for operating the moving mechanism 30 (see reference). Figure 8 The zipper pull mechanism of the present invention has the improved zipper pull holding mechanisms 40 and 140 described below, a clamp 20, a moving mechanism 30, and a control unit 80. For example, known structures such as the clamp, clamp moving mechanism, and motion control unit (numerical control unit) described in Patent Document 1 (Japanese Patent Application Publication No. 2004-215771) can be used.

[0062] Figure 6 This is a partial cross-sectional side view of the slider holding mechanism 40 in the first embodiment of the slider passing mechanism of the present invention, showing the slider 1 to be held by the slider holding mechanism 40 from above. Figure 6 In the paper, the left and right directions are the X-axis directions. The right side is designated as the downstream side in the X-axis direction, and the left side as the upstream side. Hereinafter, the downstream or upstream side in the X-axis direction will be simply referred to as the downstream side or the upstream side. The pull-head retaining mechanism 40 includes: a first movable part 50 on the downstream side and a second movable part 60 on the upstream side, serving as movable parts; a support part 41 that supports the first movable part 50 and the second movable part 60; a helical spring 42 as an elastic member (the first elastic member) that applies force to the first movable part 50 towards the upstream side; and a locking release mechanism 70. Figure 7 This is a perspective view of the first movable part 50, the second movable part 60, the spring 42, and the locking release mechanism 70, with the pull head 1 also shown. Figure 8 This is a simplified block diagram illustrating the control structure of the pull-through mechanism.

[0063] In this example, the support portion 41 includes a first support portion 41A that supports the first movable portion 50 from below on the downstream side, and a second support portion 41B that supports the second movable portion 60 from below on the upstream side, but the first support portion 41A and the second support portion 41B can be integrated. Also, the first support portion 41A and the second support portion 41B can be formed so as to be able to approach or move away from each other in the X-axis direction. Thus, the interval between the first support portion 41A and the second support portion 41B can be enlarged, and the operability when the puller retaining mechanism 40 retains the puller 1 can be improved. The first movable portion 50 is displaceable with respect to the first support portion 41A, and the second movable portion 60 is displaceable with respect to the second support portion 41B. The puller retaining mechanism 40 has a puller retaining portion 40a on the upper portion of the first movable portion 50 and the second movable portion 60, and the puller retaining portion 40a is recessed downward to place and retain the puller 1. The puller retaining mechanism 40 is raised and lowered between an upper operating position and a lower standby position by a lifting mechanism (not shown). The puller 1 is transported toward the puller retaining portion 40a of the puller retaining mechanism 40 in the operating position by a transport device or the like, and is placed on the puller retaining portion 40a.

[0064] The puller 1 includes the upper wing plate 2, the lower wing plate 3, and the guide post 4 that links the upper wing plate 2 and the lower wing plate 3. A substantially Y-shaped chain guide path 5 is defined between the upper wing plate 2 and the lower wing plate 3. The chain guide path 5 is opened at 2 shoulder ports 5a on the left and right sides of the guide post 4, and is opened at 1 rear port 5b on the opposite side from the guide post 4. The puller 1 includes a pull tab 6. The pull tab 6 has a linking ring portion 6a (see Figure 7 ) that links with a pull tab linking portion 2a that protrudes from the upper surface of the upper wing plate 2 (the upper surface is directed downward in Figure 6 ). The puller 1 also includes a lock mechanism. The lock mechanism is a known mechanism that is brought into contact with or separated from the chain 12a (see Figure 1 ) located in the chain guide path 5 by a lock pawl (not shown) that protrudes or retracts from the upper wing plate 2 side toward the chain guide path 5, thereby locking or releasing the sliding of the puller 1 with respect to the chain 12. The lock release mechanism 70 in the puller retaining mechanism 40 is used to maintain the lock mechanism of the puller 1 retained by the puller retaining portion 40a in the lock release state.

[0065] The first support portion 41A supports the first movable portion 50 in a manner that allows the first movable portion 50 to slide only along the X-axis direction. Furthermore, the first support portion 41A includes a spring support member 43 that expands upward and downstream to support the downstream end of the spring 42. The spring 42 is disposed between the downstream end face 50a of the first movable portion 50 and the spring support member 43 of the first support portion 41A, applying a force to the first movable portion 50 upstream. The second support portion 41B supports the second movable portion 60 in a manner that allows the second movable portion 60 to slide only along the X-axis direction. Furthermore, the second support portion 41B includes a support surface 44 that supports the upstream end face 60a of the second movable portion 60. The support surface 44 restricts the upstream displacement of the second movable portion 60.

[0066] The first movable part 50 has a first raised portion 51 on each of its left and right sides. The first raised portion 51 protrudes upstream compared to the upstream end face 50b of the first movable part 50. The second movable part 60 also has a second raised portion 61 on each of its left and right sides. The downstream end face of the second raised portion 61 and the downstream end face 60b of the second movable part 60 (see reference) Figure 7 The first movable part 50 and the second movable part 60 are located on the same plane. In the slider holding mechanism 40, except when the chain teeth 12 contacts the slider 1 during the slider passing operation described later, the first movable part 50 and the second movable part 60 are located on the same plane. Figure 6 The initial position of the upstream side is shown. At this initial position, the first movable part 50 is pressed upstream by the spring 42, thereby the upstream end face of the first raised part 51 contacts the downstream end face of the second raised part 61. The second movable part 60 is indirectly pressed upstream by the spring 42 via the first movable part 50, but the second movable part 60 is supported by the support surface 44 of the second support part 41B and will not displace further upstream. At this time, the first raised part 51 of the first movable part 50 also abuts against the second raised part 61 of the second movable part 60 and will not displace further upstream.

[0067] On the upstream end face 50b of the first movable part 50 (refer to) Figure 7 A gap G exists between the first movable part 50 and the downstream end face 60b of the second movable part 60. This gap G is always ensured because the first raised portion 51 of the first movable part 50 protrudes upstream of the upstream end face 50b. The pull head 1 is placed in the pull head holding portion 40a of the pull head holding mechanism 40 with the upper wing plate 2 below and the lower wing plate 3 above. At this time, the pull tab 6 is accommodated in the gap G between the first movable part 50 and the second movable part 60. The interval of the gap G in the X-axis direction is a size that is greater than the thickness of the pull tab 6 but can minimize the displacement of the pull tab 6 in the X-axis direction.

[0068] The first movable section 50 includes an upstream-side half 52 and a downstream-side half 53. An upper surface 52a of the upstream-side half 52 substantially constitutes a downstream-side half of the puller holding section 40a. The second movable section 60 includes a frame section 62 on the upstream side, and a downstream section 63 protruding from the frame section 62 toward the downstream side. An upper surface 63a of the downstream section 63 substantially constitutes an upstream-side half of the puller holding section 40a. A first cavity section 54 that penetrates vertically and opens on the upstream side is provided in the upstream-side half 52 of the first movable section 50. A second cavity section 64 that penetrates vertically and opens on the downstream side is provided in the downstream section of the second movable section. When the puller 1 is placed in the puller holding section 40a, the pull-tab connecting section 2a of the puller 1 is housed in the first cavity section 54 and the second cavity section 64.

[0069] In the first movable section 50, the downstream-side half 53 is slightly higher than the upstream-side half 52, and a downstream-side step section 55 that is a puller support section is located at the boundary between the upper surface of the upstream-side half 52 and the upper surface of the downstream-side half 53. In the second movable section 60, the frame section 62 protrudes upward more than the downstream section 63, and an upstream-side step section 65 is located at the boundary between the upper surface of the downstream section 63 and the upper surface of the frame section 62. The downstream-side step section 55 is the downstream-side side surface of the puller holding section 40a, and the upstream-side step section 65 is the upstream-side side surface of the puller holding section 40b. An opening 62a that penetrates in the X-axis direction and is longer in the vertical direction is provided in the frame section 62, and the cross section of the opening 62a is elliptical. The frame section 62 includes left and right side sections 62b and upper and lower sections that surround the opening 62a.

[0070] The lock release mechanism 70 includes an elongated plate-shaped lock release member 71, and a tension spring 72 that is an elastic member, which functions in such a way that the lock release member 71 is held in an initial position described later. The lock release member 71 includes a lock release claw 71a formed in the downstream end of the lock release member 71, and pivot sections 71b protruding left and right at substantially the middle in the length direction. The lock release member 71 penetrates the opening 62a of the frame section 62 of the second movable section 60, and the left and right pivot sections 71b are supported in a rotatable manner by shaft support holes 62c provided lower than the middle in the vertical direction in the left and right side sections 62b of the frame section 62. The lock release claw 71a is located on the downstream side of the opening 62a, and the upstream end 71d of the lock release member 71 is located on the upstream side of the opening 62a. The upper end of the tension spring 72 is connected to a fixed shaft 73 interposed near the upper ends of the left and right side sections 62b of the frame section 62. The lower end of the tension spring 72 is connected to a spring connection hole 71c provided in a portion of the lock release member 71 on the upstream side of the opening 62a.

[0071] In Figure 6 and Figure 7In the initial position, the lock release member 71 is positioned. In this initial position, the lock release pawl 71a is inclined downward and upward with respect to the pivot portion 71b, and enters the gap G between the first movable portion and the second movable portion. In addition, the upstream end portion 71d of the lock release member 71 is inclined upward and downward with respect to the pivot portion 71b in the initial position. When the lock release pawl 71a is pressed in the counterclockwise direction in the plane of the drawing with the pivot portion 71b as the center from the initial position and upward (in the Figure 6 When the lock release pawl 71a is pressed in the counterclockwise direction in the plane of the drawing with the pivot portion 71b as the center from the initial position and upward, the tension spring 72 exerts a force on the lock release pawl 71a in such a manner as to return the lock release pawl 71a to the initial position. When the puller 1 is placed on the puller holding portion 40a of the puller holding mechanism 40, the pull tab 6 is housed in the gap G between the first movable portion 50 and the second movable portion 60, and the lock release pawl 71a enters the link ring portion 6a. At this time, since the lock release pawl 71a is slightly displaced upward from the initial position, the lock release pawl 71a is forced by the tension spring 72 toward the initial position side. Thus, the pull tab 6 is disposed in the gap G in a state in which it is stretched substantially vertically downward, and thus the lock mechanism of the puller 1 placed on the puller holding portion 40a is maintained in the lock release state, and the chain row 12 of the slide fastener chain 10 can be passed through the chain guide path 5 of the puller 1.

[0072] Next, the passage of the puller through the puller passage mechanism of the first embodiment will be described. The directions of the up and down, left and right, and front and rear in the description of the puller passage mechanism of the present application are generally common to those used in the description of the related art, and thus these drawings will be used. Figures 1-4 The directions of the up and down, left and right, and front and rear in the description of the puller passage mechanism of the present application are generally common to those used in the description of the related art, and thus these drawings will be used. Figure 1 is a plan view showing the initial state of the puller 1 and the slide fastener chain 11. Figure 1 The chain row 12 in the related art is resin-made, and is injection-molded to the slide fastener tape 11a of the slide fastener chain 11, but is not limited thereto, and can be metal-made or a single wire in a spiral shape. In addition, the chain row 12 can be a chain row 12 in which the chain row 12 is formed by a plurality of chain rows 12a arranged in parallel. Figures 1-4 The directions of the up and down, left and right, and front and rear in the description of the puller passage mechanism of the present application are generally common to those used in the description of the related art, and thus these drawings will be used. Figure 1 The directions of the up and down, left and right, and front and rear in the description of the puller passage mechanism of the present application are generally common to those used in the description of the related art, and thus these drawings will be used. Figure 1 The directions of the up and down, left and right, and front and rear in the description of the puller passage mechanism of the present application are generally common to those used in the description of the related art, and thus these drawings will be used. Figure 1Reference numeral 13 in the figure refers to the spacer formed by removing a portion of the chain teeth 12. The opening and closing of the clamp 20, as well as its movement in the X-axis and Y-axis directions, are performed by the moving mechanism 30 based on action signals from the control unit 80. The control unit 80 has pre-stored various data, motion tracks, control programs, etc., corresponding to the specifications of the zipper chain 10, including the zipper pull 1 and the chain teeth 12.

[0073] from Figure 1 From that moment on, the clamp 20 is moved downstream first by the moving mechanism 30. As a result, the chain teeth 12 of the zipper chain 10 enter the chain tooth guide path 5 from the rear opening 5b of the zipper head 1. Figure 2 This is a top view of the moment when the foremost teeth 12a of the zipper chain 10 on the downstream side enter the zipper pull 1. The zipper pull 1 has a gap between the upper flange 2 and the lower flange 3 for the zipper tape 11a to pass through. Figure 2 From that moment on, the clamp 20 moves downstream while also moving outward in the Y-axis direction. As a result, the chain teeth 12 of the left and right zipper chain 11 move towards the left and right shoulder openings 5a of the chain tooth guide path 5 while separating, and then the chain teeth 12 come from the shoulder openings 5a to the outside of the zipper head 1. Figure 3 This is a top view showing a portion of the downstream side of the zipper tooth row 12 of the zipper tooth belt 11 arriving at the outside of the zipper head 1. After several downstream teeth 12a exit from the shoulder opening 5a of the zipper head 1, the clamp 20 stops moving in the Y-axis direction and only moves downstream. As a result, the upstream portion of the zipper tooth row 12 that has not yet entered the zipper head 1 passes through the zipper head 1 along the tooth guide path 5, and the zipper head passing operation is completed.

[0074] During the zipper pull process described above, the moving mechanism 30 moves the clamp 20 in the X-axis and Y-axis directions so that the zipper teeth 12 of each zipper tooth strip 11 advance along a pre-set moving trajectory along the approximately Y-shaped tooth guide path 5 of the zipper pull 1. Figure 4 yes Figure 2 A magnified view of circle C. The high-speed moving clamp 20 causes the zipper teeth 11 of the zipper chain 11 to enter the tooth guide path 5 from the rear opening 5b of the zipper head 1 in its initial position (see reference). Figure 2 and Figure 4 There is a possibility that the chain tooth 12 exceeds the preset movement trajectory, and the foremost chain tooth 12a on the downstream side collides with the guide post 4. When the chain tooth 12a contacts the guide post 4, the pull head 1 is pressed downstream, and the pull head 1 presses the first movable part 50 in the pull head holding mechanism 40 downstream from its downstream step portion 55. As a result, the first movable part 50 overcomes the force of the spring 42 and displaces downstream on the first support portion 41A. Figure 9 This is a top view showing the downstream displacement of the pull head 1 and the first movable part 50. Figure 9At this time, the spring 42 is compressed in the X-axis direction. As above, the puller 1 is displaced from the initial position to the downstream side at the time when the chain tooth 12a comes into contact with the guide post 4 to avoid, thereby it is possible to prevent the chain tooth row 12 from being damaged or being impaired. Further, after the puller 1 is temporarily displaced to the downstream side, the chain tooth row 12 returns to the prescribed movement locus, thereby the first movable portion 50 and the puller 1 return to the initial position of the upstream side by the spring 42 recovering.

[0075] When the first movable portion 50 is displaced to the downstream side, the second movable portion 60 is displaced to the downstream side on the second support portion 41B by the friction between the puller 1 displaced to the downstream side. That is, the (downwardly directed) upper surface of the upper wing plate 2 of the puller 1 and the face between the upstream side half of the prescribed puller holding portion 40a in the second movable portion 60 function by the friction, thereby the second movable portion 60 is also displaced to the downstream side together with the puller 1. In this way, the second movable portion 60 is also displaced together with the puller 1, thereby it is possible to prevent the puller 1 from being damaged.

[0076] When the second movable portion 60 is displaced to the downstream side, the lock release member 71 and the tension spring 72 of the lock release mechanism 70 linked to the second movable portion 60 are also displaced to the downstream side together with the second movable portion 60 while maintaining the same posture. Therefore, the lock release claw 71a maintains the posture of pulling the pull tab 6 of the puller 1 downward, and maintains the lock mechanism of the puller 1 in the lock release state. Thereby, even if the puller 1 is displaced from the initial position, it is possible to continue the insertion of the chain tooth row 12 to the chain tooth guide path 5 of the puller 1. In addition, in this way, the lock release mechanism 70 is also displaced together with the pull tab 6, thereby it is possible to prevent the pull tab 6 from being damaged. When the first movable portion 50 and the puller 1 return to the initial position of the upstream side by the spring 42 recovering, the first protruding portion 51 presses the second protruding portion 61 to the upstream side, thereby the second movable portion 60 also returns to the initial position in which the support face 44 is contacted.

[0077] Figure 10 is a partial sectional side view showing the puller holding mechanism 140 in the second embodiment of the puller passing-through mechanism to which the present application relates. The puller passing-through mechanism includes the same jig 20, moving mechanism 30, control portion 80 as the puller passing-through mechanism of the first embodiment. In Figure 10 , the puller 1 is held by the puller holding portion 140a of the puller holding mechanism 140. The puller holding mechanism 140 differs from the puller holding mechanism 40 described above mainly in the following aspects. That is, the second movable portion 160 is forced to the downstream side by the second spring 142 as the second elastic member, and the lock release mechanism 70 is not provided. The structures other than the above are substantially the same as the puller holding mechanism 40, and therefore the same reference numerals as Figure 6 and the like are used for only a part of the structure, and detailed explanation is omitted.

[0078] In the slider holding mechanism 140, the second movable portion 160 is supported to the second support portion 141B in a displaceable manner and is urged to the downstream side by the second spring 142. The second support portion 141B includes a spring support member 143 that supports the upstream side end of the second spring 142. The second movable portion 160 has second protruding portions 161 on both left and right side portions. The spring constant of the second spring 142 is set to be smaller than the spring constant of the spring 42.

[0079] In Figure 10 In the initial state, the first movable portion 50 is urged to the upstream side by the spring 42, and the first protruding portion 51 presses the second protruding portion 161, that is, the second movable portion 160, to the upstream side. The second movable portion 160 is in a state in which the upstream side urging of the spring 42 via the first movable portion 50 and the downstream side urging of the second spring 142 are balanced. At this time, the second spring 142 is in a slightly compressed state. In this state, if the lowermost front tooth 12a of the tooth row 12 of the slide fastener chain 10 comes into contact with the guide post 4 of the slider 1 at the time of the slider threading process, the slider 1 and the first movable portion 50 displace to the downstream side against the urging of the spring 42, and damage or harm to the tooth row 12 can be prevented. In addition, with the displacement of the slider 1 and the first movable portion 50 to the downstream side, the second spring 142 is elongated and displaces the second movable portion 160 to the downstream side. Therefore, the second movable portion 160 also displaces together with the slider 1, and damage to the slider 1 is not caused. After the slider 1 is temporarily displaced to the downstream side, the tooth row 12 returns to the prescribed movement locus, whereby the first movable portion 50 and the slider 1 return to the initial positions on the upstream side due to the restoration of the spring 42, and the second movable portion 160 also compresses the second spring 142 and returns to the initial position.

Claims

1. A zipper pull mechanism, characterized in that, include: A slider holding mechanism (40, 140) includes a slider holding part (40a, 140a) for holding the slider (1); Left and right gripping parts (20) grip the zipper chain (10); and A moving mechanism (30) is used to move the gripping member (20) holding the zipper chain (10) so that the chain teeth (12) of the zipper chain (10) pass downstream from the rear opening (5b) of the zipper head (1) held by the zipper head holding part (40a, 140a) toward the shoulder opening (5a). The zipper pull retaining mechanism (40, 140) includes movable parts (50, 60, 160) that allow the zipper pull (1) to move downstream when the chain teeth (12) are in contact with the zipper pull (1). The movable parts (50, 60, 160) include a first movable part (50) and a second movable part (60, 160). When the pull head (1) moves to the downstream side, the first movable part (50) and the second movable part (60, 160) also move to the downstream side together with the pull head (1).

2. The zipper pull mechanism according to claim 1, characterized in that: The movable part (50, 60, 160) includes a downstream step part (55), which defines at least a portion of the slider holding part (40a, 140a) and supports the slider (1) when it is displaced to the downstream side. The pull head holding mechanism (40, 140) includes: a support (41) that supports the movable part (50, 60, 160) in a displaceable manner; and an elastic member (42) that applies force to the movable part (50, 60, 160) upstream.

3. The pull-through mechanism according to claim 2, characterized in that: The first movable part (50) defines the downstream side portion of the pull head holding part (40a, 140a) and includes the downstream side step part (55); the second movable part (60, 160) defines the upstream side portion of the pull head holding part (40a, 140a).

4. The pull-through mechanism according to claim 1, characterized in that: The zipper (1) includes: a locking mechanism; and a zipper tab (6), which can switch the locking and unlocking of the locking mechanism according to the posture or position. The pull head holding mechanism (40) includes a locking release mechanism (70), which can maintain the posture or position of the pull tab (6) that unlocks the locking mechanism when the pull head (1) is displaced and when it is not displaced.

5. The zipper pull mechanism according to claim 3, characterized in that: It includes a second elastic member (142) that applies force to the second movable part (160) downstream.

6. The pull-through mechanism according to claim 1 or 2, characterized in that: It includes a control unit (80) for causing the moving mechanism (30) to operate, and the control unit (80) stores the movement trajectory of the gripping member (20) in advance.

7. A puller retaining mechanism, characterized in that, Includes a zipper pull retaining part (40a, 140a) for holding the zipper pull (1), wherein the zipper pull (1) allows the chain teeth (12) of the zipper chain (10) to pass through towards the downstream side. The slider holding mechanism (40, 140) includes a movable part (50, 60, 160) that allows the slider (1) to move downstream when the chain teeth (12) are in contact with the slider (1). The movable parts (50, 60, 160) include a first movable part (50) and a second movable part (60, 160). When the pull head (1) moves to the downstream side, the first movable part (50) and the second movable part (60, 160) also move to the downstream side together with the pull head (1).

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