KR880002429Y1 - Pull tab feeder for a machine for assembling slide fastener sliders - Google Patents

Abstract

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Description

Towing Tap Feeder for Slide Fastener Slider Assembly

1 is a partial ablation right side view of the pull tab supply apparatus according to the present invention, showing that the pin is in the contact position and the contact plate is in the disengaged position.

FIG. 2 is a view similar to FIG. 1 showing that the pin is in the disengaged position and the contact plate is in the contact position.

3 is a left side view of the pull tab supply device.

4 is a sectional view taken along the line IV-IV in FIG.

5 is a cross-sectional view taken along the line V-V in FIG.

6 is a perspective view of the towing tap feeder.

7 (a) is a perspective view of a traction tab supplied by gravity toward the slider body.

Figure 7 (b) is a perspective view of the pull tab attached to the slider body.

8 is a partial ablation front view of a series of pull tabs disposed in the feed slot of the chute.

* Explanation of symbols for main parts of the drawings

10: towing tap supply device 11: chute

12: supply slot 13: donation

15: U-shaped bracket 19, 20: rotating bar

21: pin 23: first roller (cam follower)

25: contact plate 27: the second roller (cam follower)

29,32: tension spring 36,36: first and second cam

A: Traction tab S: Slider body

The present invention relates to a pull tab feeder for continuously and automatically supplying a pull tab by gravity to a device for continuously assembling sliders for slides and fasteners.

One known pull tab feeder for use in an apparatus for assembling slide fastener sliders is disclosed in Japanese Patent Application Laid-Open No. 57-41243, issued September 2, 1982. The conventional pull tab supply apparatus for automatically supplying a pull tab by gravity to the slider granulator includes a first pin arranged to be inserted into a hole formed in a lower pull tab located in a feed slot of a chute, and a feed slot And a second pin disposed to contact the lower end of the lowermost tow tab in the inner portion, and a third pin disposed to be inserted into a hole formed in the tow tab located immediately above the lowermost tow tab.

The second and third pins are supported on a rotatable bar that is rotatable in accordance with the vertical movement of the cam to position each of the pins between the contact position and the release position. When the pivoting bar is rotated, the second and third pins alternately hold the corresponding pull tabs, allowing the pull tabs to drop one by one from the chute onto the slider assembly by gravity. The pivoting bar consists of a single part and the lowermost pull tab of the chute and the pull tab located directly above the pull tab are held in place by the pins. It was difficult to establish accurate timing for operating the pivoting bars and pins in synchronization with the intermittent angular movement of the slider body caused by the drive shaft. The third pin, which must extend through the opening of the tow tab, must be repositioned if other tow tab shapes or dimensions are used. Moreover, the third pin did not give enough force to hold or press the traction tabs against the chute.

It is an object of the present invention to provide a pull tab feeder which can securely hold the pull tabs and then supply the pull tabs to the slider fastener slider assembly one by one by gravity.

According to the present invention, a traction tab supply device for continuously supplying a traction tab to a slider fastener slider granulator is angularly supported (i.e., rotatable) on a chute, and is arranged in a row of traction tabs in the chute. A first pivoting bar having a pin for contacting an end of the terminal traction tab at one end and a first roller at the other end; It is supported by the chute so as to be able to angularly move in parallel with the first pivot bar, and has a contact plate for contacting the surface of the tow tab next to the tow tab of the terminal at one end and a second roller at the other end. It is provided with a 2nd rotation bar. The first and second pivot bars are normally provided by the first and second springs respectively to keep the pin in contact with the end of the terminal pull tab and to keep the contact plate in contact with the surface of the next pull tab. Pulled. The first and second cams each have protrusions that engage the first and second rollers against the elasticity of the first and second springs, respectively. The first and second projections are staggered such that the pins and contact plates alternately contact and release the trailing tab and the next trailing tab, respectively.

By this arrangement, the pull tabs can be reliably fed by gravity from the chute onto the slider bodies respectively received in the recesses formed in the base. The base is rotated intermittently to continuously position the slider bodies below the chute. Hereinafter, the present invention will be described in detail with reference to the accompanying drawings as follows.

The principle of the present invention is particularly useful when embodied in the pull tab feeder indicated generally by reference numeral 10 in FIGS. 1-3 and 6. As shown in FIG. 1 and FIG. 2, the pull tab supply apparatus 10 is provided with the chute 11 installed in the apparatus base (not shown) and extending upward from the base. The chute 11 has a feed slot 12 for receiving the series of pull tabs A in the longitudinal direction, the feed slot 12 being shown in detail in FIG. It is preferably formed on the longitudinal side surface of the chute by a pair of elongated plates or strips. The lower end of the feed slot 12 is open downwards towards the rotatable base 13. The base 13 has a plurality of grooves 14 (only one shown) formed on its upper surface, and the grooves 14 are arranged in a circle. The lower end of the feed slot 12 coincides with one of the recesses 14 when the base 13 remains stationary.

The recesses 14 serve to receive the slider body S (Figs. 7 (a) and 7 (b)), respectively. An approximately U-shaped bracket 15 is attached to the chute 11 in a manner that surrounds the chute 11, and the bracket 15 is arranged on both sides of the chute 11. Have parallel legs 16, 17 (shown in greater detail in FIG. 6). The free ends away from the chute 11 of the legs 16, 17 are located on the pivot shaft 18, which is located across the feed slot 12 and falling from the chute 11. Are connected to each other by

First and second parallel pivot bars 19 and 20 are pivotally mounted to the pivot 18. The first and second bars 19, 20 are spaced apart from each other in the axial direction of the pivot shaft 18 and extend substantially along the chute 11.

The pin 21 is provided in the lower end part of the 1st rotation bar 19 by the bolt 22 so that adjustment is possible. The pin 21 has a narrow free end 21a that is directed toward the feed slot 12. The first roller, that is, the camp floor 23, is rotatably installed at the upper end of the first pivot bar 19 by the shaft 24. The contact plate 25 is provided in the lower part of the 2nd rotation bar 20 by the bolt 26 so that adjustment is possible. The contact plate 25 is vertically and vertically aligned with the pin 21 and has a flat end 25a facing the feed slot 12. The second roller, that is, the cam floor 27, is rotatably installed at the upper end of the second pivot bar 20 by the shaft 28. The pin 21 and the contact plate 25 extend in the longitudinal direction of the first and second pivoting bars 19 and 20 to fit different shapes and dimensions of the towing tabs to be supplied by the towing tap supply device 10. Position can be adjusted with respect to the pivoting bars respectively. Such positionings may, for example, form slots longitudinally in the first and second pivot bars 19, 20, insert bolts 22, 26 in such a slit, and the bolts may properly It can be achieved by tightening the bolts 22, 26 after it has been positioned.

As shown in FIG. 3, the first tension spring 29 is fastened to the first pivoting bar 19 directly from the bolt 30 and the bolt 22 fastened to the leg 17 of the bracket 15. It is attached to the tightened bolts 31 and extends between the bolts 30 and 31. Therefore, the pin 21 is normally forced to move into the supply slot 12 by the first spring 29. On the other hand, as shown in Figs. 1, 2 and 6, the second tension spring 32 is a bolt 33 fastened to the leg 16 of the bracket 15, and the bolt 26 immediately It is attached to the bolt 34 tightened to the second pivot bar 20 from below, and extends between the bolts (33, 34). The second spring 32 normally causes the contact plate 25 to be forced into the feed slot 12.

As shown in FIGS. 1-3, first and second parallel cams 35, 36 are provided on the vertical arm 37 of the support 38, which support 38 is the base 13. It is fixed by a bolt 39 to the upper surface of the block 40 which is moved vertically and vertically by a central drive shaft (not shown).

The first cam 35 has an upper protrusion 41 extending vertically over approximately the upper half of the first cam 35 so as to contact the first roller 23. Similarly, the second cam 36 has a lower protrusion 42 extending vertically over approximately the lower half of the second cam 36 to contact the second roller 27. Thus, the upper and lower protrusions 41, 42 of the first and second cams 35, 36 are vertically staggered with each other rather than horizontally aligned with each other.

First and second pivot bars to enable the first and second pivot bars 19, 20 to operate in a well-adjusted manner to ensure that one pull tab is securely dropped onto the base 13 at a time. It is preferred that the first and second cams 35, 36 are individually adjustable relative to the vertical arm 37 so that the timing for the angular movement of 19, 20 can be accurately adjusted.

The pin 21 and the contact plate 25 may be made of metal. However, in particular, the contact plate 25 is preferably made of a suitable elastomeric material, such as rubber or soft synthetic resin. The compatibility of the elastomeric material is advantageous, especially if the surface of the tow tab A to be contacted by the contact plate 25 has an uneven surface engraved with letters, numbers and / or patterns. This is because the traction tab A can be kept well.

Operation of the pull tab supply device 10 configured as described above is as follows. Each tow tab A is received in line in the feed slot 12 of the chute 11. In the positions shown in FIGS. 1, 3, 4, 5 and 8. FIG. The first roller 23 is positioned away from the contact with the first cam 35. The pin 21 of the first pivot bar 19 is in contact with the bottom of the feed slot 12 and thus the bottom of the lowermost pull tab A1 in the feed slot 12. Pulled by At this time, the second roller 27 is the lowermost part, the second cam to lift the contact plate 25 of the second pivot bar 20 from the contact with the next pull tab A2 located directly above the pull tab A1. The lower protrusion 42 of 36 is in contact. Thus, the pull tabs A1 and A2 are continuously positioned in the feed slot 12 near the lower end of the chute 11.

The base 13 is rotated by the central drive shaft of the base such that one of the recesses 14 in which the slider body S is accommodated is located at a position just below the lower end of the feed slot 12. In response to such rotational movement of the drive shaft of the base 13, the block 40 is lowered as shown in FIG. 2 to lower the first cam 35 so that the upper protrusion 41 is first roller 23. Make contact with Accordingly, the first roller 23 is moved laterally by the upper protrusion 41 toward the chute 11, so that the first pivot bar 19 is rotated clockwise about the pivot shaft 18. 2) to lift the pin 21 from the lower end of the lowermost pull tab A1. Thus, the pull tab A1 can be slid by gravity from the feed slot 12 toward the slider body S in the recess 14 as shown in FIGS. 2 and 7 (a). do.

The pull tab A1 thus supplied by gravity from the feed slot 12 has an attachment frame 43 disposed between the lugs 44 of the slider body S. As shown in FIG. The pull tab A1 then falls to the upper surface of the slider body S. FIG. Continue. The traction tab A1 can be firmly attached to the slider body S by deforming the lugs 44 to engage with the attachment frame 43 as shown in FIG. 7B.

At the same time as the first cam 35 moves the first roller 23, the second cam 36 is also lowered to move its lower protrusion 42 out of contact with the second roller 27 and downward. . Thus, the second pivot bar 20 pivots the shaft until the contact plate 25 contacts the surface of the pull tab so that the next pull tab A2 is held in place in the feed slot 12. Pulled by second spring 32 to rotate counterclockwise (in FIG. 2) about 18. Thereafter, the block 40 is raised again to cause the upper protrusion 41 of the first cam 35 to be disengaged from the first roller 23 as shown in FIGS. 1 and 3. The lower protruding portion 42 of the second cam 36 comes into contact with the second roller 27. The first pivot bar 19 is adapted to rotate clockwise (in FIG. 3) about the pivot shaft 18 to move the pin 21 in contact with the bottom of the feed slot 12. Pulled by a spring 29. At the same time, the second pivoting bar 20 rotates clockwise (FIG. 1) about the pivot shaft 18 to lift the contact plate 25 from the surface of the next pull tab A2. Thus, the pull tab A2 is able to slide down by gravity along the feed slot 12 until he comes into contact with the pin 21 located in the feed slot 12.

Since the pull tab A2 is gravity fed to the lowest position in the feed slot 12, the successive pull tabs A following the pull tab A2 will drop by gravity to their respective lower positions. Is allowed. Thus, the pull tabs A are stored in continuous heat in the feed slot 12 so that they can be immediately discharged from the chute 11.

By repeating the above operation cycle, it is possible to continuously supply the towing tabs onto the base 13 so that the towing tabs can be continuously attached to the slider bodies S respectively accommodated in the yoke portions 14. The effect of the pull tab supply device 10 according to the present invention of the structure and operation as described above is as follows.

The pin 21 of the first pivot bar 19 and the contact plate 25 of the second pivot bar 20 are in contact with the pull tab A1 or A2 and the pull tab A1 or A2. It is possible to rotate alternately and independently between positions deviating from. Thus, it is relatively easy to adjust the timing for positioning each of the recesses 14 directly under the lower end of the feed slot 12 of the chute 11. The pull tabs A reliably fall from the chute 11 because the first and second pivot bars 19, 20 are alternately actuated by the first and second cams 35, 36. Or slip. Further, since the contact plate 25 of the second pivoting bar 36 is held vertically with respect to the surface of each of the towing tabs A, the contact plate 25 is the hole position and shape of the towing tab A. FIG. And irrespective of the structure, the traction tab can be held in contact with the traction tab without mistakes. If the contact plate 25 is made of an elastic material such as rubber or flexible synthetic resin, the contact plate 25 can securely contact and hold the tow tab even when letters, numbers and / or patterns are engraved on the tow tab A. have.

In addition, frequent stoppages of the tow tap supply device 10 due to operational failures such as jamming do not occur, so that the tow tap supply device 10 is more reliably and stably slider than the conventional tow tap supply device. Since the pull tab A can be supplied to the main body S, the efficiency of the pull tab supply apparatus 10 becomes high.

Claims (5)

A pull tab supply device 10 for continuously supplying a pull tab A to a device for assembling a slider for a slide fastener, the feed slot 12 for receiving a row of pull tabs A in a longitudinal direction. Schut 11 with; The shroud 11 is supported so as to be movable, and has a pin 21 at one end thereof in contact with an end of the tow tab A1 at the end of the row of tow tabs, and a first roller 23 at the other end thereof. A first pivot bar (19) having a; A contact plate 25 which is movably supported by the chute 11 in parallel with the first pivoting bar 19 and in contact with the surface of the traction tab A2 next to the traction tab A1 of the terminal; A second rotation bar 20 having one end and a second roller 27 at the other end; A first spring (29) that normally pulls the first pivot bar (19) to maintain the pin (21) in contact with the end of the pull tab (A1) of the terminal; A second spring 32 which normally pulls the second pivoting bar 20 to maintain the contact plate 25 in contact with the surface of the next pull tab A2; A first cam (35) having a protruding portion (41) and movable to contact the first roller (23) against the elasticity of the first spring (29); And a second cam (36) having a protrusion (42) and movable to contact the second roller (27) against the resilience of the second spring (32); The protruding portions 41 and 42 of the first and second cams 35 and 36 have the pin 21 and the contact plate 25 at the end of the pull tab A1 and the next pull tab, respectively. A pull tab feeder of a slide fastener slider assembly arranged alternately with each other so as to alternately contact and leave (A2). 2. The bracket (15) according to claim 1, wherein both legs (16, 17) are attached to the chute (11) with one foot disposed at each shaft portion of the chute (11), and both A pivot shaft 18 is also provided which connects the legs 16 and 17 to each other; And a first and second pivot bars (19,20) are angularly supported on the pivot shaft (18). The method of claim 2, wherein the first and second springs respectively act between the first pivot bar 19 and the bracket 15 and between the bracket 15 and the second pivot bar 20. Traction tap feeder with tension springs (29, 32). 2. The pull tab feeding device according to claim 1, wherein said contact plate (25) is made of an elastomeric material. 2. A pull tab supply apparatus according to claim 1, wherein said pin (21) and said contact plate (25) are installed on said first and second pivoting bars (19, 20) so as to be adjustable.