JPS636005B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a centering mechanism in an apparatus for mounting a slider on an uncut fastener chain.

The uncut fastener chain referred to here is a long chain in which a pair of stringers in which fastening tooth implanted parts and fastening tooth missing parts are provided alternately are engaged with each other, and a bottom stop is set at one end of each fastener tooth implanted part. It is about the Huasna chain. The present invention relates to a centering mechanism for an uncut fastener chain, which constitutes a part of a device for installing a slider in each tooth-embedded portion of the long fastener chain. After the slider has been installed, the long fastener chain is cut at the missing tooth portion, or if necessary, after the top stop is attached, the long fastener chain is cut to form a completed fastener chain.

To attach a slider to an uncut fastener chain, the uncut fastener chain is pushed open by the opening mechanism to hold the slider in place, and then the opened section is opened. The sides are closed by the centering mechanism and the fastening tooth implanted portion of the uncut fastener chain is guided to the rear opening of the slider.

Conventional centering mechanisms have generally been driven by a power source separate from that of the spreader mechanism and slider feeder, as disclosed, for example, in US Pat. No. 2,732,000.

SUMMARY OF THE INVENTION An object of the present invention is to provide an extremely simple centering mechanism for an uncut fastener chain that is linked to the rise and fall of a slider supply device without relying on any other power source.

That is, the centering mechanism of the uncut fastener chain of the present invention includes: a support shaft fixed directly below the element guide groove of the support block on the end face of the support block for transporting the uncut fastener chain; a pair of L-shaped pieces whose lower ends are loosely fitted and whose horizontal pieces face each other outward; and a pair of L-shaped pieces that are wound around the support shaft and are separated from each other by straight portions at both ends. a coil spring that exerts an elastic force in a direction in which the pair of L-shaped pieces As the outer surface of each vertical piece engages with its upper end surface when the holder case is raised, the opposing side surfaces of each vertical piece of the L-shaped piece come into contact with each other, and each horizontal piece of the L-shaped piece It is characterized in that the fastener implanted portion of the uncut fastener chain is held between the notches in the opposing corner portions.

Hereinafter, a slider mounting device using a centering mechanism according to the present invention will be explained with reference to the drawings.

Figure 1a shows a missing fastener part B of an uncut fastener chain C that has been transferred from the left to the right.
FIG. 2 is a plan view showing a state in which the slider device is stopped above the station of the slider device, where A is a tooth implantation part and E is a lower stopper.

FIG. 1b is a plan view showing the state where the fastener chain has the missing toothed part expanded in order to position the slider S in the missing toothed part, and this expansion is shown in the normal view in FIG. This is achieved by inserting the wide portion 3 (width W ₁ ) of the expansion rod 1 shown in the figure into the gap between the left and right stringers in the tooth-missing portion.

In Fig. 1c, in order to smoothly engage the slider with the fastener chain's fastener chain, the expansion rod 1 is raised and the narrow part 4 (width W ₂ ) is positioned between the left and right stringers. It shows the condition. At this time, the gap between the left and right stringers near the slider socket is closed by closing the swing guide (indicated by a dotted line), which will be described later. Preparations are made for implementation.

Figure 1 d shows the state a while after the uncut fastener chain has started to be transferred to the right and the slider has started to be introduced into the fastening tooth implantation area, and at this time, the expansion rod 1 descends again, and its wide part 3 splits open the row of clip teeth at the plug tooth implantation part that has been inserted into the slider, and the left and right stringers It is pushed apart from side to side.

FIG. 1e shows the moment when the expansion rod 1 is lowered further and completely escapes from the fastener row and the slider begins to be transported with the uncut fastener chain.

By adopting the above method, it is possible to prevent the uncut fastener chain from causing so-called chain cracking before it is introduced into the rear opening of the slider, and to prevent the uncut fastener chain from causing so-called chain cracking before being introduced into the slider. It is possible to prevent collisions with other objects and reduce frictional resistance.

FIG. 3 is a perspective view of the entire system convenient for carrying out the above method, including an uncut fastener chain transfer device 100 and a slider supply device 20 for intermittently transferring uncut fastener chains.
0, a slider mounting device 300 including an expansion rod 1, a slider pocket block 310, etc., and a centering mechanism 400.

First, with reference to FIG. 3, the configuration and function of the uncut fastener chain transfer device 100 will be described.

Reference numeral 101 denotes a transport path for an uncut fastener chain, and the passage along the center line of the chain is represented by a dashed line. 110 is a support block with an element guide groove 111 on the upper surface, and above it, an element guide groove 11 on the lower surface.
A guide block 112 having a diameter of 3 is placed thereon. 114 is a slit, and a pin 117
A sensing roll 115 rotatably held at one end of a sensing lever 116 supported by a sensing lever 116 rolls through the slit and comes into contact with the uncut fastener chain being conveyed in the element guide groove. When the missing tooth part of the uncut fastener chain reaches this sensing roll 115, the sensing roll 115 falls into the missing tooth part and lowers slightly, and the sensing lever 11
6 issues a stop signal in response to this movement of the sensing roll 115.

Reference numeral 118 denotes a bottom stop shoe, which presses the uncut fastener chain against the base plate 120 and stops the transfer by raising the piston of the first air cylinder 119 that operates in response to the signal. let Reference numeral 121 denotes a locking groove for engaging the lower stopper. 122 is a driving roll, 12
3 are pressure rolls, and the uncut fastener chain is driven by these rolls.

Next, the configuration and operation of the slider supply device 200 will be explained. 201 is slider shot 2
02 and 203 are feed claws, 204 is a feed claw holder, 205 is a slider holder, 206 is a swing lever, 207 is a receiving plate, 208 is a second air cylinder, 209 is a slide block, and 210 is a guide rail.

A large number of sliders S is a slider shoot 20
From 1, they are sent in a row in the vertical direction,
A feed claw holder 204 that reciprocates in conjunction with the repeated transfer and stop of the uncut fastener chain.
A pair of feed claws 202, 203 held by
(Of course, even just one is fine), the slider is fed into the receiving plate 207 of the slider holder 205 one by one. Since the receiving plate 207 is provided at a position such that it fits into the gap between the upper wing flange and the lower wing flange of the slider S, stable guiding is performed. A swing lever 206 that is urged inward by a spring prevents the slider S from falling off from the side. When the slider S is held by the slider holder 205, the second cylinder 208 moves the slider holder 205 to a guide rail 2 fixed to an immovable base (not shown).
10 in the direction of the arrow. Its purpose will be described later along with the function of the slide block 209 that hangs below the slide holder 205 and moves together with the slide holder 205.

FIGS. 4 and 5 are a plan view and a rear view, respectively, of a modified example of the slider supply device. Components corresponding to those shown in FIG. 3 are denoted by the same reference numerals as in FIG. 3, and their explanations will be omitted. The guide rail 210 is fixed to the slider holder 205, and is different from the one shown in FIG. 3 in that it is guided through a through hole of an immovable base 213 to which the second air cylinder 208 is fixed, but functionally it is different from the guide rail 210 shown in FIG. It is easy to understand that there is no difference at all. 211 is a third air cylinder (not shown in FIG. 3), and the feed claw holder 204 is
It is for reciprocating driving along a guide rail 212 fixed to a base 213. The portion labeled 300 in the lower part of FIG. 4 and indicated by a two-dot chain line is a plan view of a portion of the slider mounting device described below. FIG. 4 will be explained again later in connection with the structure and operation of the slider mounting device.

Figures 6, 7, and 8 are a partially cutaway side view and a front view (view from the upstream side of the uncut fastener chain transfer path) of the slider mounting device, respectively.
and a plan view of main parts. Moreover, FIGS. 9a and 9b are diagrams showing the structure and operation of the centering mechanism according to the present invention.

In the figure, 310 is a slider pocket block, 311 is a fourth air cylinder, 312 is an immovable base, 313 is a slide holder case, 3
14 is a locking lever, 315 and 316 are a hook portion at the upper end of the locking lever and a shoulder portion of the slider pocket block 310, respectively, 317 is a compression spring, 318 is a pull presser lever, 319 is a roller at the lower end of the puller presser foot, and 320 is a Cam, 321
is a plan view of the cam, 322 is a claw of the pull lever, and 323 is a fifth air cylinder. A recess 331 provided on the side surface of the slider pocket block 310 is provided for inserting the handle P of the slider S from the side while hanging downward. Reference numerals 401 and 402 are L-shaped pieces that serve as L-shaped swing guides, 403 is a support shaft, and 404 is a coil spring that biases both swing guides in the opening direction. is configured.

9 and 10, the operation of the centering mechanism of the present invention will be described below in relation to the operation of the slider mounting device with reference to FIG. 1.

() The slider holder case 313, which is driven up and down with respect to the immovable base 312 by the fourth air cylinder 311, is at the bottom dead center position. The locking lever 314 has a shoulder portion 31 with a hook portion 315 at the upper end protruding forward of the slider pocket block 310, as shown by the solid line in FIG.
6, and locks the slider pocket block 310 in the downward position against the upward elastic force of the spring 317. At this time, the roller 319 attached to the lower end of the pull lever 318, which is pivotally supported by the slider pocket block 310, rides on the top view 321 of the cam 320, so the claw 322 at the upper end assumes the retracted position. There is. In addition, the fifth air cylinder 32
3, slider holder case 313
The expansion rod 1, which is driven vertically relative to the opening, is also at the bottom dead center position. The swing guide 400 is open and the uncut fastener chain is being transported in the direction of the arrow.

() The slider S that has been sent to the slider holder 205 via the slider chute 201 and further guided by the guide rail 210 is transferred to the slider pocket 330, and the slide hanging below the slider holder 205 Block 209 (5th
In Fig. 3, the roller 324 at the upper end of the locking lever 314 is struck to disengage the locking lever 314 from the shoulder 316 on the front surface of the slider pocket block 310, and the slider pocket block 3
10 is raised by the elastic force of the spring 317. As a result, the roller 319 at the lower end of the pull presser lever 318 moves to a position where it engages with the upper slope of the cam 320, so the claw 322 at the upper end rotates in the direction of the pull P of the slider S and presses it. Therefore, when the slider holder 205 returns to the direction of the slider chute, the swing lever 206 opens and the slider S
remains in the slider pocket 330. At this time, the uncut fastener chain may still be in transit.

() When the sensing lever 116 detects the passage of the uncut fastener chain through the tooth-missing part and issues a stop signal, and the lower stop stop shoe 118 and the base plate 120 stop the transfer of the uncut fastener chain, the The missing tooth part is slider pocket 3
30, by the operation of the fifth air cylinder 323, the opening/expanding rod 1 moves up while pushing the stringer to the left and right with the sagittal part 2 at the tip, and The wide portion 3 following the shaped portion expands the stringers so that the gap between them is widest. The fourth air cylinder 311 continues to push up the slider holder case 313, but the slider pocket block 310 collides with the ceiling stand 410 and stops. However, the upper ends 325 and 326 of the legs of the slider holder case 313 continue to rise in order to eventually close the pair of L-shaped pieces 401 and 402 against the elastic force of the coil spring 404. This corresponds to the stage in FIG. 1b.

() When the slider holder case 313 reaches the top dead center, the roll 319 passes over the flat part 321 of the cam 320 and falls into the valley, and the pull presser lever 318 rotates to the right and presses the pull P of the slider S again. At the same time, the upper ends 325 and 326 of the legs of the slider holder case 313 are attached to the pair of L-shaped pieces 401 and 40 of the swing guide 400.
2 to close it to the state shown in Figure 9b. On the other hand, the expansion rod 1 continues to rise, and the narrow part 4
reaches the gap between both stringers. Therefore, the uncut fastener chain in this case is at the stage shown in FIG. 1c. Thereafter, the lower stop shoe 118 is lowered, the drive roll 122 is rotated, the fastener chain starts to be fed, and the fastening tooth implant portion enters the inside of the slider. After the tip tooth of the tooth implantation part enters the slider, only the expansion rod 1 moves into the fifth position.
The wide portion 3 of the opening/expanding rod 1 is lowered by the air cylinder 323, and the mating tooth rows of the tooth implanted portion are separated. The fastener chain is inserted into the slider S while being separated, and the first
When the slider is passed through to the position shown in Figure e, the drive roll 122 is stopped and the fastener chain is stopped from being fed.

() Next, the slider holder case 313 starts to descend again, and the upper ends 325 and 326 of the legs separate from the swing guide 400, so the swing guide 400 returns to the state shown in FIG. 9a again. However, since the tooth row has already been introduced into the rear mouth of the slider S and passed through the shoulder mouth, and is at the stage shown in Figure 1 e, the slider S will not fall even if the upper ends 325 and 326 of the legs descend. There isn't.

() The slider holder case 313 and the expansion rod 1 further descend to return to the state shown in (). When the slider S is completely separated from the slider pocket block 310 during the lowering of the slider 313, the slider S is transported again with the uncut fastener chain in the state shown in FIG. 1e.

Since the centering mechanism of the present invention has the above-described configuration and operation, it can efficiently center the uncut fastener chain in cooperation with the legs of the slider case without requiring any other power source.

[Brief explanation of the drawing]

1a to 1e are diagrams explaining the principle of the method of attaching a slider to an uncut fastener chain;
The figure is a front view of the tip of the expansion rod, Figure 3 is a perspective view of the entire system suitable for carrying out the method of Figure 1, Figure 4 is a plan view showing an example of a slider supply device, and Figure 5 is its The back view, FIG. 6, FIG. 7, and FIG.
Figures a and b are explanatory diagrams of the configuration and operation of the centering mechanism according to the present invention, and Fig. 10 is an explanatory diagram of the operation of the slider mounting device. Explanation of main symbols, 1: Expansion rod, 100:
Uncut fastener chain transfer device, 200: slider supply device, 300: slider mounting device, 400: centering mechanism, 401, 402: L-shaped piece, 403: spindle, 404: coil spring.

Claims (1)

[Scope of Claims] 1. A support shaft fixed on the end face of the support block for transporting uncut fastener chains directly below the element guide groove of the support block; the lower end of each vertical piece is loosely fitted to the support shaft, and the horizontal a pair of L-shaped pieces arranged to face each other with their pieces facing outward; and a pair of L-shaped pieces that are wound around the support shaft and separated from each other by straight portions at both ends. a coil spring that exerts an elastic force in a direction that causes the L-shaped pieces to move; a notch is provided in each of the opposite corners of each horizontal piece of the pair of L-shaped pieces; By engaging the outer surface of each vertical piece with the upper end surface thereof when the holder case is raised, at least a portion of the opposing inner surfaces of each vertical piece of the L-shaped piece come into contact with each other, and the L-shaped 1. A centering mechanism for an uncut fastener chain, characterized in that a fastening tooth planting portion of the uncut fastener chain is clamped by the notches in opposing corner portions of each horizontal piece.