JPS6344363B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention provides a method for removing a predetermined number of fastener elements from a pair of left and right elongated fastener stringers having independent synthetic resin fastener elements, thereby forming spaces at predetermined intervals. The present invention relates to a method and apparatus for producing.

Prior Art A device that creates a space in a fastener chain by removing a predetermined number of synthetic resin fastener elements implanted from the edge of a long fastener tape by injection molding, etc. generally uses a pair of left and right fastener stringers. After intermittent conveying a predetermined amount of fastener elements in an engaged state, and cutting off the interlocking heads of a predetermined number of fastener elements with a cutter when the conveyance is stopped, the legs remaining and attached to the fastener tape are (Japanese Patent Publication No. 57-134104), and a device (Japanese Patent Publication No. 57-37323) that presses and deforms a predetermined number of fastener elements with a punch when conveyance is stopped, and then removes the press-deformed fastener elements. It is used.

However, these devices control the spacing between the space parts by transporting the fastener chain by a certain amount based on the rotation speed of the transport roller, so it is necessary to cut off a part of the fastener element adjacent to the space part. There is a disadvantage that the fastener element may be partially chipped due to deformation due to pressure.

Furthermore, in the former device (Japanese Patent Laid-Open No. 57-134104), a positioning pin is provided on the upstream side of the cutter (in the present invention, the supply side of the fastener stringer is referred to as the upstream side, and the opposite side is referred to as the downstream side). A pin is provided to apply tension to the fastener stringer and to set the fastener element to be removed in the correct position relative to the cutter. However, even with this method, since the space portion is formed by interlocking the fastener elements with each other, the fastener element adjacent to the space portion may be partially chipped.

In addition, in conventional space creation devices of this type, the timing of space creation does not match the timing of processing in the injection molding machine, so the left and right fastener stringers, which are manufactured separately and synchronously in the injection molding machine, are The fastener stringers manufactured by the injection molding machine must be stored in a separate process from the fastener element planting process using the injection molding machine, such as temporarily storing the fastener elements in an engaged state. The slide fasteners had to be transported and set, which hindered the full automation of the manufacturing of slide fasteners.

Purpose of the Invention The present invention prevents the fastener element from being partially chipped, can reliably create space portions at predetermined intervals, and can process the fastener stringer manufactured by an injection molding machine as it is. It is an object of the present invention to provide a method and device for creating a space for a slide fastener, which can also create a space part.

Mechanism of the Invention According to the present invention, an element detector is provided in the vicinity of an element removal mechanism that removes a fastener element from a fastener tape, and fastener stringers are provided on the upstream and downstream sides of the element removal mechanism. A stop mechanism for stopping the conveyance is provided, and the stop mechanism is driven when a predetermined number of elements are detected by the element detector, so that the conveyance amount of the fastener stringer is kept constant, and furthermore, the stop mechanism is driven when a predetermined number of elements are detected by the element detector. A storage mechanism is provided on the side and downstream side,
Furthermore, the storage mechanism, element detector, transport mechanism, and stop mechanism are provided for each fastener stringer, and the element removing mechanism is provided with an element removing means for each fastener stringer to carry, stop, and remove the elements of the fastener stringer. This is achieved by doing this for each fastener stringer.

Example The following will explain the embodiments shown in the drawings.

In FIGS. 1 to 10, reference numeral 1 denotes known injection molding in which independent synthetic resin fastener elements E are synchronously and continuously injection molded on one end edge in the width direction of a pair of left and right long fastener tapes T. In the illustrated example, a space creation device is provided next to the injection molding machine 1.

The space creation device includes an upstream storage mechanism 2 that temporarily stores a pair of left and right fastener stringers S that are intermittently sent out from the injection molding machine 1, and an upstream stop mechanism 3 that stops conveyance of the fastener stringers S when creating a space. an element removal mechanism 4 for removing a predetermined number of fastener elements from the fastener tape; a downstream stop mechanism 5 for stopping the fastener stringer S in synchronization with the stop mechanism 3 when creating a space; An element detector 6 for counting, a main conveyance mechanism 7 that conveys the fastener stringer S, a downstream storage mechanism 8 that temporarily stores the fastener stringer after the fastener element has been removed, and the left and right fastener stringers that have been processed. Combining mechanisms 9 that are combined with each other are provided in that order. Storage mechanism 2,
8. Stop mechanism 3, 5 Element detector 6 and main transport mechanism 7 are provided for each fastener stringer S, and element removal mechanism 4 provides element removal means for each fastener stringer. In the illustrated example, the element removing means includes:
This is a pair of a punch mechanism 40 and a removal mechanism 50.

Each storage mechanism 2 on the upstream side has a pair of rollers 17 and 18 rotatably provided on each support arm 11 extending from the upper end of the base 10 toward the injection molding machine 1, and
A tension roller 19 is attached to a shaft 13 which is supported by support arms 11 and 12 of a base 10 so as to extend in the vertical direction, so as to be vertically movable. Each storage mechanism 2
In this example, the fastener stringer S is wound from the roller 17 to the tension roller 19, and further from the tension roller 19 to the roller 18, and the timing of the feeding of the fastener stringer S from the injection molding machine 1 and the feeding by the main transport mechanism 7 is determined. The misalignment is absorbed by each fastener stringer S.

As shown in FIG. 4, each upstream stop mechanism 3 includes a fixed guide stand 30, a movable guide stand 31,
The movable guide stand 31 is provided with an air cylinder 32 that moves up and down with respect to the fixed guide stand 30, and a guide space 35 for the fastener stringer S is formed between both guide stands 30 and 31. Each fixed guide stand 30 was fixed on a support base 33 attached to the base 10, each movable guide stand 31 was connected to a piston rod of an air cylinder 32, and the air cylinder 32 was fixed on the support base 33. It is fixed to a support stand 34. The upper surface of each fixed guide table 30 and the lower surface of each movable table 31 are flat surfaces facing each other, and grooves 36 extending in the conveying direction of the fastener stringer S are formed at the facing positions.

In each stop mechanism 3, the movable guide stand 31 is normally raised relative to the fixed guide stand 30, and the fastener stringer S is connected to the fastener element E.
is located in the concave groove 36, and the fastener tape T is guided by the guide roller 37 and conveyed in a horizontal state so as to protrude laterally from the guide space 35. However, when the air cylinder 32 operates, the movable guide stand 30 descends, the fastener stringer S is clamped between the fixed guide stand 31 and the movable guide stand 30, and the transportation of the fastener stringer S is forcibly stopped.

Each stop mechanism 3 includes an air cylinder 21,
A tension mechanism 20 consisting of a pusher 22 is provided in each case. Each tension mechanism 20 is
The air cylinder 21 is attached to the support plate 23 fixed to the support base 33, and the pusher 22 is attached to the piston rod 24 of the air cylinder 21, and the pusher 22 is normally retreated from the conveyance path of the fastener stringer S. When the air cylinder 21 operates, the pusher 22 descends and pushes down the fastener stringer S.

The element removal mechanism 4 includes, for each fastener stringer S, a punch mechanism 40 that presses and deforms the legs of a predetermined number of fastener elements E, and a removal mechanism 50 that removes the press-deformed fastener elements from the fastener tape.

Each punch mechanism 40 is shown in FIGS. 3, 5, and 6.
As shown in the figure, each punch 41 has a pair of a punch die 42, and a pair of guide pieces 43 and 44 for positioning are provided on the upstream and downstream sides of the punch 41 and punch die 42, respectively.
is connected to a piston rod 101 of a common air cylinder 100 via a vertical movement table 102. An air cylinder 100 is fixed to a base 10, and a piston rod 101 passes through a fixed base 103 fixed to the base 10 so as to be able to move up and down. The vertically movable table 102 is made in the shape of a rectangular plate, and four shafts 104 fixed in a hanging state at the four corners pass through the fixed table 103 so as to be vertically movable. fixed at the top. Each punch 41 faces each other via a piston rod 101 and is fixed to the lower surface of a vertical moving table 102 with screws (not shown) in a state extending in the conveying direction of the fastener stringer S, and is normally raised relative to the punch die 42. A guide space for the fastener stringer S is formed between the fastener stringer S and the punch die 42, and when the air cylinder 100 is operated, it is lowered.

Each punch 41 has a Fuasuner stringer S
Grooves 106 extending in the conveyance direction are formed from the lower surface side, and three holes 107 whose lower ends communicate with the grooves 106 are formed from the upper surface side. A piece 45 is provided to be movable up and down, and each hole 107 is provided with a compression coil spring 108 and a holding screw 109. Each punch piece 45 has a long hole 110 extending in the vertical direction at a location facing the hole 107, and the punch piece 45 passes through the long hole 110.
Punch 41 by support pin 111 fixed to 1
It is supported so that it can move up and down against the spring 10.
8, it is constantly urged downward. Each hole 107
The upper part thereof is a female threaded hole, and the holding screw 109 is screwed into this female threaded hole. Each punch piece 45 faces a passage portion of the fastener element of the fastener stringer S.

Each punch die 42 has a plate shape, and a pedestal 1 is attached parallel to the upper surface of the fixed pedestal 103.
It is provided in 12. Each holder 112 has a concave groove 1 extending in the conveyance direction of the fastener stringer S.
13 and 114 on each of the upper surface side and the lower surface side, and a punch die 42 is provided in the upper groove 113 so as to be vertically movable. A sliding body 115 extending in the conveying direction of the fastener stringer S is movably provided in each of the lower grooves 114 . Each sliding body 115 is connected to a piston rod 118 of a common air cylinder 117 via a link 116, and when the air cylinder 117 is driven, it is moved from left to right in FIG. 5, and when the air cylinder 117 is returned, it is moved from left to right in FIG. It is moved from right to left in FIG.

Side plates 1 are provided on the upstream and downstream sides of each cradle 112.
19 are provided respectively. Each side plate 119 is screwed to the fixed base 103 with a space extending vertically between it and the pedestal 112.
A connecting piece 120 and a guide piece 44 are provided in each space so as to be movable up and down. Each connecting piece 120 is
The upper end is engaged with the punch die 42, and the lower end surface is in contact with the outer peripheral surface of the roller 121. Each roller 121
is normally located in the recess 122 formed on the top surface of the sliding body 115, but the air cylinder 11
When the sliding body 115 is moved to the right in FIG. 5 by 7, it is pushed up to the upper surface of the sliding body 115, thereby pushing up the connecting piece 120 and raising the punch die 42.

Each upper guide piece 43 connects side plates 123 provided upstream and downstream of the punch 41 to the punch 41.
It is provided so as to be able to move up and down between the
When the punch 41 is raised, the upper locking part 12
5 is engaged with the upper surface of the side plate 123 and raised. A recessed notch 126 into which one fastener element can be inserted is formed on the lower side of each guide piece 43.

The upper end surface of each lower guide piece 44 is formed into a gentle arc surface, and is constantly urged upward by a compression coil spring 127 provided between the connecting piece 120, so that the upper end surface becomes a fastener. Projects into the element transfer path.

As shown in FIGS. 7 and 8, each removal mechanism 50 includes a gripper 51 that grips the fastener tape T portion, a moving table 52 to which this gripper 51 is attached, and an air cylinder that moves this moving table 52. 53 and a guide plate 54 that guides the movement of the moving table 52, and is provided on the left and right sides of the punch mechanism 40. Each guide plate 54 is formed with a guide hole 55 extending from the conveyance path of the fastener stringer S toward the left and right sides. Each moving platform 5
2 is connected to the air cylinder 53 by the link piece 56.
It is connected to the piston rod 57 of the gripper 51, and is normally in a position where the fastener tape T is gripped by the gripper 51, but when the air cylinder 53 is driven once, the guide hole is opened with the gripper 51 gripping the fastener tape T. It reciprocates once along 55. Each removal mechanism 50 has a base 1
0 is mounted on a base 58 attached to the base 58. Since such a removal mechanism 50 is described in, for example, Japanese Patent Publication No. 57-37327, a detailed explanation thereof will be omitted.

Each downstream stop mechanism 5 includes a tension mechanism 20
Each stop mechanism 3 on the upstream side except that it does not have
It is configured the same as 1. Therefore, each stop mechanism 5 has a fixed guide stand 30 and a movable guide stand 31.
and an air cylinder 32 that moves the movable guide stand 31 up and down with respect to the fixed guide stand 30.

Each element detector 6 is provided near the element removal mechanism 4, and as shown in FIG. 9, is composed of a pair of a light emitting element 60 such as a light emitting diode and a light receiving element 61 such as a phototransistor. ing. Each light emitting element 60 is attached to a support plate 62, and each light receiving element 61 is attached to a support plate 63. The support plate 32 is screwed to a support stand 64 fixed to the base 10, and the support plate 63 is attached to the upper side of the support plate 62 in an overlapping state. A guide groove 65 through which the fastener element E passes and a guide groove 66 through which the fastener tape T passes are formed on opposite sides of both end portions of the support plates 62 and 63 in the left and right direction, and a guide groove for the fastener element. Holes 67 and 68 communicating with the groove 65 are formed in the vertical direction, and each pair of light emitting element 60 and light receiving element 61 is provided in the holes 67 and 68 so as to face each other with the guide groove 65 interposed therebetween.

Each element detector 6 detects the fastener element and outputs a detection signal by blocking the light beam from the light emitting element 60 toward the light receiving element 61 by the fastener element E passing through the guide groove 65. Although not shown, this detection signal is used as a signal for counting the number of passages of the fastener element in a counter circuit.

Each main transport mechanism 7 includes a drive roller 70 connected to a common rotation source (not shown) such as a motor, and a pair of pinch rollers 71 that press the fastener stringer S against the drive roller 70. The drive roller 70 is a friction roller, and normally sends out the fastener stringer S together with the pinch roller 71, but when the stop mechanisms 3 and 5 operate, it idles relative to the fastener stringer S.

Like each storage mechanism 2 on the upstream side, each storage mechanism 8 on the downstream side has a pair of rollers 87 and 88 rotatably provided on a support arm 81 provided at the upper end of the base 10 to support the base 10. A tension roller 89 is attached vertically freely to a shaft 83 supported by arms 81 and 82 so as to extend in the vertical direction, and the fastener stringer S is moved from the roller 87 to the tension roller 89.
The fastener stringer S is wound around the tension roller 89 and then around the roller 88 to absorb the difference between the timing of sending out the fastener stringer S by the main conveyance mechanism 7 and the timing of combination by the combination mechanism 9.

As shown in FIG. 10, the combination mechanism 9 includes four pairs of guide rollers 90, 91, 92, 93 provided in order in the conveying direction of the fastener stringer S.
, a coupling body 94 for meshing the fastener elements E of the left and right fastener stringers S with each other, and feed rollers 95 and 96 for intermittently feeding out the meshed fastener stringers, that is, the fastener chain at a predetermined speed. This is the mechanism. This combination mechanism 9 first guides each fastener stringer S to a horizontal state by a guide roller 90, and then guides each fastener stringer S to a horizontal state by a guide roller 91.
The fastener elements E are erected with the fastener element E on the upper side, separated from each other in the left and right direction by the guide roller 92, and then guided diagonally by the guide roller 93, thereby being supplied to the combined body 94 at a predetermined opening angle and inclination angle. and combined body 94
This allows the fastener elements E of both fastener stringers S to mesh with each other. The feed rollers 95 and 96 do not operate while the fastener stringer S is not being conveyed. Such a combination mechanism 9 is disclosed in, for example, Japanese Patent Application Laid-Open No.
Since it is described in Publication No. 57505, detailed explanation thereof will be omitted.

In this space creation device, when the fastener stringer S is transported, the movable guide stand 31 of each stop mechanism 3, 5 is separated upward from the fixed guide stand 30, and the punch 4 of the element removal mechanism 4
1. The punch piece 45 and the guide piece 43 are raised, and the punch die 42 is lowered. Therefore, the pair of fastener stringers S sent out from the injection molding machine 1 are separated from each other and transferred to the storage mechanism 2, the stop mechanism 3, the element removal mechanism 4, the stop mechanism 5, and the element detector 6 by the main conveyance mechanism 7. are sent out to the storage mechanism 8 on the downstream side. During this time, the space creation device detects the fastener element for each fastener stringer with the element detector 6, and counts the number of passages of the fastener element for each fastener stringer based on the detection signal in a counter circuit (not shown).

When the number of passages of both fastener elements reaches a predetermined number, the space forming device first operates the air cylinders 32 of each of the stop mechanisms 3 and 5, then operates the air cylinder 21 of the tension mechanism 20, and then operates the element removal mechanism 4. The air cylinders 100 and 117 operate.

When the air cylinder 32 of each stop mechanism 3, 5 operates, the movable guide stand 31 descends, so each fastener stringer S is moved by the fixed guide stand 30 and the movable guide stand 31 on the upstream and downstream sides of the element removal mechanism 4. It is clamped and conveyance is stopped. In this state, the drive roller 70 of the main conveyance mechanism 7 is a friction roller and therefore rotates idly. In this way, the element detector 6
When the stop mechanisms 3 and 5 are driven when a predetermined number of elements are detected in The amount of conveyance at one time can be reliably matched to the element pitch x number of elements. Furthermore, by detecting the fastener element for each fastener stringer with the element detector 6 and driving the stop mechanisms 3 and 5, it is possible to absorb the deviation in the conveyance of both fastener stringers S, that is, the deviation in the feed amount by the main conveyance mechanism 7. can.

Air cylinder 21 of each tension mechanism 20
When it operates, the pusher 22 descends, so
Each fastener stringer S is pressed down while being held between the upstream and downstream sides of the element removal mechanism 4, and back tension is applied. Due to this action, even if each fastener stringer S has slack between the stop mechanisms 3 and 5, this slack is absorbed and the element removal mechanism 4
The part is expanded. In this state, in each fastener stringer S, as shown in FIG. It is located between the grippers 51.

Air cylinder 10 of element removal mechanism 4
0,117 moves, the vertically movable table 102 descends and the sliding body 115 moves to the right in FIGS. 3 and 5. Due to this action, in the fastener stringer S, the fastener element closest to the space forming part is fitted into the recessed part 126 of the guide piece 43, and the guide piece 43,
After being clamped and positioned by the punch 44, the leg portion of the fastener element in the space forming portion is pressed and deformed by the punch 41 and the punch die 42 and breaks, as shown in FIG. 11B. At this time, punch 41 and punch die 4 for each fastener stringer S
2, a predetermined number of fastener elements E are pressed and deformed. Therefore, even if the stop position of the fastener stringer with respect to the punch 41 and the punch die 42 is shifted within the interval between adjacent fastener elements, the fastener elements adjacent to the space portion can be deformed. No deformation due to pressure.

When the leg portion of the fastener element is pressed and deformed by the punch 41 and the punch die 42, the air cylinder 100 of the element removal mechanism 4 retreats slightly, and the air cylinder 5 of the removal mechanism 50
3 respectively operate. When the air cylinder 100 retreats slightly, the punch 41 rises slightly as shown in FIG. maintain the condition.

When the air cylinder 53 operates, first the 11th
As shown in FIG. C, the fastener tape T is maintained by the gripper 51, and in this state, the movable table 52 advances and retreats once along the guide hole 55. When the movable table 52 moves forward, the fastener stringer S is moved so that the press-deformed fastener element is moved between the punch die 42 and the cradle 111 by the punch piece 45.
In the state where it is pressed, the fastener tape T is pulled laterally by the gripper 51 or
As shown in Figure D, the press-deformed fastener element is removed from the fastener tape.

After that, the air cylinders 100 and 117 of the element removal mechanism 4, the air cylinder 32 of the stop mechanisms 3 and 5, and the air cylinder 53 of the tension mechanism 50 are each returned to their original positions, and the fastener stringer S is sent out again by the main transport mechanism 7, during which the element is detected. The fastener element is detected by the detector 6, and the number of passages of the fastener element is counted by a counter circuit (not shown) based on the detection signal. The count value of the counter circuit is cleared while the air cylinders 32 of the stop mechanisms 3 and 5 are operating.

The long fastener stringer S from which a predetermined number of fastener elements have been removed at predetermined intervals in this manner is pulled out from the storage mechanism 8 to the combination mechanism 9 by feed rollers 95 and 96, and the fastener elements are mutually separated in the combination mechanism 9. They are meshed together to form a continuous fastener chain and sent to the next finishing device or storage device.

Effects of the Invention As described above, the present invention provides fastener stringer storage mechanisms on the upstream and downstream sides of the element removal mechanism, so that the processing timing in the element removal mechanism, the processing timing in the injection molding machine, and the element removal Even if the timing of the processing in the processing device on the downstream side of the mechanism is different, the timing difference can be absorbed by the storage mechanism. In addition to removal, the fastener stringer manufactured by the injection molding machine can be processed as is to create the space, and the process from the injection molding machine to the finishing device can be performed continuously and automatically. . Also,
Since the number of fastener elements is counted and the conveyance of the fastener stringer is stopped,
The amount of conveyance of the fastener stringer at one time becomes constant, so that the fastener element is removed for each fastener stringer, and the conveyance of the fastener stringer is stopped on the upstream and downstream sides of the element removal mechanism. Even if there is a slight deviation in the stop position of the fastener stringer relative to the element removing means, the fastener element adjacent to the space forming part will not be half-chipped or deformed, and the space part can be created at an accurate pitch. can.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of the arrangement of each mechanism in the space creating device according to the present invention, Fig. 2 is a front view showing an embodiment of the space creating device, and Fig. 3 is a part of the space creating device. 4 is a sectional view taken along the - line in FIG. 3, FIG. 5 is an enlarged partially cutaway front view of the element removal mechanism, FIG. 6 is an enlarged sectional view taken along the - line in FIG. 3, and FIG. A plan view of the removal mechanism, FIG. 8 is a left side view of the removal mechanism, FIG. 9 is a sectional view taken along the - line in FIG. 3, FIG. 10 is a plan view of the combination mechanism, and FIG. 11 is the operation of the element removal mechanism. It is an explanatory diagram. DESCRIPTION OF SYMBOLS 1... Injection molding machine, 2... Storage mechanism, 3... Stopping mechanism, 4... Element removal mechanism, 5... Stopping mechanism, 6
... Element detector, 7... Main transport mechanism, 8... Storage mechanism, 9... Combination mechanism, 40... Punch mechanism, 50
...Removal mechanism, S...Fastner stringer, T
... Fastener tape, E... Fastener element.

Claims (1)

[Claims] 1. A long fastener stringer is pulled out from a storage mechanism upstream of an element removal mechanism that removes a fastener element from a fastener tape through the element removal mechanism, and sent to a storage mechanism downstream of the element removal mechanism. a first step, and during the first step, detecting a fastener element near the element removal mechanism;
a second step of counting the number of passing fastener elements; and a third step of stopping the conveyance of fastener stringers on the upstream and downstream sides of the element removal mechanism when the counted value in the second step reaches a predetermined number. a fourth step of removing a predetermined number of fastener elements by the element removal mechanism while the conveyance of the fastener stringer is stopped; and after the completion of the fourth step, releasing the grip on the fastener stringer and removing the fastener stringer. a fifth step of allowing conveyance; and a sixth step of pulling out the fastener stringer from the storage mechanism downstream of the element removal mechanism, engaging the fastener elements, combining them into a continuous fastener chain, and sending them out. process, second process, third process,
A method for creating a space for a slide fastener, characterized in that the fourth step and the fifth step are performed for each fastener stringer. 2. An element removal mechanism 4 for removing a predetermined number of fastener elements E of a long fastener stringer S from the fastener tape T; storage mechanisms 2 and 8 for storage; a main transport mechanism 7 that pulls out the fastener stringer S from the storage mechanism 2 on the upstream side and delivers it to the storage mechanism 8 on the downstream side; and a main transport mechanism 7 provided near the element removal mechanism 41, and , element detectors 6 for detecting fastener elements; and element detectors 6 provided on the upstream and downstream sides of the element removal mechanism 4, and when the element detectors 6 detect a predetermined number of fastener elements, the fastener stringer S is removed. stop mechanisms 3 and 5 that stop the conveyance; and a combination mechanism 9 that pulls out the fastener stringer S from the storage mechanism 8 on the downstream side and meshes the fastener elements E with each other to form a continuous fastener chain; Mechanisms 2 and 8, main transport mechanism 7,
An element detector 6 and each stop mechanism 3, 5 are provided for each fastener stringer, and the element removing mechanism 4 is provided with element removing means 40, 5.
A space creating device for a slide fastener, characterized in that 0 is provided for each fastener stringer.