JPS6318482B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a finishing device for a fastener chain, and more specifically, the present invention relates to a finishing device for a fastener chain, and more specifically, for producing a fastener chain having the length of a final product from a long fastener chain as a semi-finished product. A finishing process in which a space is formed in the long fastener chain by fixing a stopper at a predetermined interval to the long fastener chain and removing a predetermined number of element groups following the fastener fixing position. Regarding equipment.

Conventionally, when making a fastener chain with the final product length from a long fastener chain as a semi-finished product, a continuous element row is cut before cutting the long fastener chain into the final product length. A space to be cut to the final product length is formed by fixing fasteners at predetermined intervals to a long fastener chain having the fastener chain, and removing a predetermined number of element groups following the fastener fixing positions from the tape. . The above fasteners are fixed by supplying pre-formed fastener parts one by one from a parts feeder and driving them into the fastener chain with a vertically moving punch, and the above space is formed at the head of the element group to be removed. This is generally done by punching from above and below using a punch and die. The fixing of the stop and the formation of the space are usually performed simultaneously or successively at adjacent positions to speed up processing. In particular, with fastener chains used for pants, etc., where the fly is attached to the fastener tape, the fly gets in the way when creating spaces and attaching fasteners, so it is necessary to bend the fly during each process. must be carried out, but
If the space creation and the stopper attachment are performed simultaneously or successively, the fly folding operation can be performed only once, which greatly simplifies the operation.

However, the method described above in which preformed fastener parts are supplied one by one from a parts feeder and driven into the fastener chain with a punch is undesirable because the parts cost is high. Therefore, a wire rod for forming a stop is supplied to the stop attachment position,
It is desirable to adopt a method in which the wire is cut into a predetermined length and shape using a forming die and a cutting punch, and then the cut piece is formed into a fastener shape using a forming punch and then driven into a fastener chain. . However, if a forming die, cutting punch, forming punch, etc. are installed close to the space creation device in this way, the remnants of the elements punched out during space creation may reach the element guide of the space creation device when the fastener chain is fed. As a result of it hitting and flying off, it enters into the gap formed by the adjacent forming die, cutting punch, etc., resulting in the disadvantage of stopping the function of the fastener attachment device or producing a defective fastener.

The present invention has been made in order to eliminate the above-mentioned conventional drawbacks, and for this reason, the fastener chain finishing apparatus according to the present invention stops a long fastener chain in which elements are continuously planted at predetermined intervals. A fastener attaching device for fixing a fastener and a space creating device disposed adjacent to the fastener attaching device for removing a group of elements over a predetermined length from a fastener chain, the fastener attaching device having a forming die. A bender equipped with the forming die, a cutting punch for cutting the fastener forming wire supplied onto the forming die into a predetermined length and shape, and a cutting punch that cuts the cut wire rod piece into a fastener shape and places it on the fastener chain. The bender includes a forming punch for fixing, and a spacer punch and a spacer die for punching the head of the element group engaged with the space creating device from above and below, and the bender has a hollow shape, and the bender has a hollow shape, and the bender has a hollow shape. An air pressure source is connected to supply high-pressure air to the forming die, and an air outlet is formed in the front of the hollow part to blow out air onto the forming die. is blown away from the fastener mounting device to maintain the function of the fastener mounting device and prevent the production of defective fasteners.

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, the finishing apparatus 10 according to the present invention includes a base 11 and a
1 and a hollow frame 12 erected on top of the frame 12.

In the frame 12, a forming punch 13 and a cutting punch 14, which constitute a part of a fastener attachment device, and a spacer punch 15, which constitute a part of a space creation device, are disposed, and each slides vertically. It is now possible to be guided by a moving guide. As shown in FIG. 3, the cutting punch 14 is located on the feeding direction side of the fastener chain 16 (hereinafter, this direction will be referred to as the downstream side, and the opposite direction will be referred to as the upstream side).
It has a vertical groove 16 for slidably housing the forming punch 13 therein, and has a cross-sectional shape suitable for cutting a wire rod 17 for forming a fastener supplied to the fastener attaching device into a predetermined shape. On the other hand, the forming punch 13 has the vertical groove 1 of the cutting punch 14.
It is formed integrally with the spacer punch 15 so as to move up and down within the spacer punch 15 together with the spacer punch 15. The spacer punch 15 is disposed downstream and adjacent to the forming punch 13, and has an appropriate length and thickness to punch out a predetermined number of element heads from a fastener chain 16 having continuous element rows 18 that mesh with each other. These cutting punches 1
The cutting punch 14, the forming punch 13, and the spacer punch 15 are supported by a single punch holder (not shown) and are periodically moved up and down. Initially, the forming punch 13 and the spacer punch 15 are lowered integrally by a cam and a link mechanism (not shown), and then the forming punch 13 and the spacer punch 15 can be lowered regardless of whether the cutting punch 14 stops lowering.

A laterally extending opening 19 is provided on the upstream side of the fastener chain supply side of the frame 12, and a bender 20 is slidably housed within the opening 19. The bender 20 has a forming die 21 at its downstream end that cooperates with the forming punch 13, and the forming die constitutes a part of the fastener attachment device. A stopper 22 that engages with the outer surface of the frame 12 is formed at the upstream end of the bender 20, thereby regulating the protruding position of the bender, that is, the protruding position of the forming die 21. A spring 24 is compressed between the bender 20 and the extension 23 of the frame 12 to constantly urge the bender 20 to the extended position. Additionally, there is a cam surface 2 at the downstream end of the bender.
5 is formed, and the cam surface 25 is adapted to engage with a cam surface 26 formed on the cutting punch 14, so that the bender 20 is forced to release the spring 24 when the cutting punch 14 is lowered.
It is designed to be moved to the retracted position against the force of. The bender 20 has a hollow shape as shown in the figure, and an extension part 2 is inserted into the hollow part by a tube 27 and a bolt 28 from an air pressure source (not shown).
High pressure air is supplied through a pipe 29 fixed to 3. The tip of the pipe 29 maintains airtightness with the bender 20 through a seal 30, but allows the bender to slide against the pipe. The air supplied to the bender 20 is blown out onto the forming die 21 through a blowout port 31. Note that a spring 32 is interposed between the tip of the pipe 29 and the bender 20 within the hollow portion, and together with the spring 24, the bender 20 is always pressed to the protruding position.

A planar guide surface 33 is formed on the base 11, which guide surface together with the extended lower surface of the frame 12 forms a chain guide for the fastener chain 16 that is fed to the finishing device. Further, the forming punch 13 is mounted on the base 11.
A die 34 forming a part of the fastener attaching device is formed in alignment with the fastener chain 16 in the vertical direction, and the die 34 works together with the forming punch 13 to form and fix the fastener chain 16 to the fastener chain 16. . moreover,
A spacer die 35 that is vertically aligned with the spacer punch 15 and constitutes a part of the space creation device is formed on the base 11, and the spacer die 35 has a groove for receiving the spacer punch 15. Together with the spacer punch 15, the heads of a predetermined number of elements 18 to be removed are punched out. The spacer die 35 also forms, together with an element guide 36, a chain guide for the fastener chain 16 passing through the finishing device. The element guide 36 has a forked shape as shown in FIG. 3 to receive the spacer punch 15, and one end thereof is attached to a bracket 37 fixed to the frame 12 with a pin 38.
The element guide 36
An angle member 39 is fixed to the downstream end of the
The angle member 39 is pulled upwardly by a spring 40 which is latched to the frame 12. As a result, the element guide 36 is connected to the spacer die 35.
The fastener chain 16 is clamped with an appropriate pressing force without impairing the movement of the fastener chain 16 between the two.

As best shown in FIG.
1 is provided with a wire supply device 41 that intermittently supplies the wire rod onto the wire rod 1 . The device includes a plurality of wire guides 44 (only one is shown in the figure) arranged at intervals along a support 43 supported on a bracket 42 projecting from one side of the frame 12, and a wire guide 44 fixed to one side of the frame 12. The punch holder includes a stationary lever 45 and a swinging lever 46 that swings by a predetermined angle in the wire supply direction in synchronization with the vertical movement of the punch holder. The wire rod guide 44 is connected to both levers 45 and 4 from a wire rod source (not shown).
A wire rod 17 is smoothly guided between rolls 47 and 48 held by a roller 6. The stationary lever 45 has a roll guide groove 49 that gradually expands from one side to the other side,
Both ends of the roll 47 are pivotally connected to the stationary lever 45 at the upper end with a pin 50 on both sides (only one side is shown in the figure), and the middle part is attached to the lever 45.
A roll holder 5 connected to 5 with a spring 51
It is loosely inserted into the elongated hole 53 of No. 2. As a result, the pair of upper and lower rolls 47 held by the stationary lever 45
allows movement of the wire rod 17 in the feeding direction, but prevents movement in the opposite direction. On the other hand, the swing lever 46 has a lower part that swings left and right around an upper pivot point (not shown) each time the punch holder moves up and down by a cam mechanism (not shown). It has a roll guide groove 54 that is connected to the stationary lever 45 and gradually widens from one side to the other side, and both ends of the roll 48 are connected to the upper end on both sides of the lever 46 (only one side is shown in the figure). is pivotally connected to the lever 46 with a pin 55, and loosely inserted into a long hole 58 of a roll holder 57 whose intermediate portion is connected to the lever 46 with a spring 56. As a result, the pair of upper and lower rollers 48 held by the swing lever 46 freely roll on the wire rod 17 when the lever 46 swings in the opposite direction to the wire rod supply direction, and return to the wire rod supply direction by the action of the spring 53. At this time, the wire rod 17 is held under clamping pressure and fed in the supply direction. In this way, the wire rod 17 can be intermittently supplied by a fixed distance using both levers 45 and 46.

Next, to describe the operation of the device of the present invention, the fastener chain 1 having a continuous element row 18
6 from a supply roll (not shown) to a guide surface 33 and chain guides 35, 36 as shown in FIG.
is inserted and moved intermittently in the direction of the arrow by a predetermined distance. The intermittent movement of the fastener chain is effected by an intermittent drive downstream of the machine. At this time, the forming punch 13 and the cutting punch 14 are in the raised position as shown in FIG. 4, and the wire rod 17 for forming a fastener is supplied onto the bender 20. Due to the operation of the intermittent drive device, the punch holder that can support the forming punch 13 and the cutting punch 14 is lowered, whereby both the punches 13 and 14 are lowered.
The wire rod 17 for forming the stopper is cut and deformed by the cutting punch 14 as shown in FIG. 5. When the punch holder is further lowered, the cam surface 26 of the cutting punch 14 engages the cam surface 25 of the bender 20 to move the bender 20 to the retracted position. As a result, the cut wire rod portion 17' for forming a fastener is held between the cutting punch 14 and the forming punch 13. As the punch holder continues to descend further, the tip of the cutting punch 14 comes into contact with the tape of the fastener chain 16 on the die 34 and stops moving, and only the forming punch 13 continues to descend. As a result, the cut wire rod part 1
7' is deformed into a fastener shape by the forming punch 13 and die 34 and fixed onto the element 18 of the fastener chain 16, as shown in FIG. At the same time as the forming punch 13 is lowered, the spacer punch 15 is also lowered, and a predetermined number of element heads positioned on the spacer die 35 are punched out as shown in FIG. The punching out of the element head and the fixing of the stop are carried out simultaneously. The remaining pieces of the element with the head punched out are in a state where they can be easily separated from the fastener chain tape, and the fastener chain 1 can be easily separated from the fastener chain tape for the next processing.
As a result, the forming die 21 and the cutting punch 1 of the adjacent stopper attachment device collide with the element guide 36 and jump when moving the stopper 6.
However, as described above, in the present invention, the air jet provided on the forming die 21 of the bender 20 tends to fly into the gap formed by the forming die 21 of the bender 20, etc. Since high-pressure air is blown out from the port 31 toward the space creation device, the element remnants are blown away from the stopper attachment device and do not fly into the stopper attachment device. Therefore, there is no need to stop the function of the fastener mounting device or to create a defective fastener, unlike in the prior art. In this way, the fastener chain 16 is fitted with a stopper S as shown in FIG.
is fixed, and a space d of an appropriate length is formed adjacent to the stop. After fixing the stopper and forming the space, the punch holder is raised, and the forming punch 13, cutting punch 14,
Spacer punch 15 and forming die 2
1 returns to the state shown in FIG. 4 and prepares for the next processing.

On the other hand, in the wire rod supply device 41, when the punch holder is lowered, the swing lever 46 is caused to swing in a direction opposite to the wire rod supply direction. At this time, the roll 47 of the stationary lever 45 grips the wire 17 and
while preventing the movement of the roll 4 of the swing lever 46.
8 freely rolls on the wire rod 17. After fixing the stop S and forming the space d, the swing lever 46 is returned to the state shown in FIG. 2 by the force of the spring 53 when the punch holder is raised. At this time, the roll 47 of the stationary lever 45 allows the wire rod 17 to move in the feeding direction, while the roll 48 of the swinging lever 46 allows the wire rod 17 to move in the feeding direction.
7 and move it in the supply direction. In this way, the wire supply device supplies the wire for one stopper S to the stopper attaching device each time the punch holder moves up and down, that is, each time the stopper S is fixed and the space d is formed.

As described above, according to the present invention, the fasteners are formed from the fastener forming wire and attached to the fastener chain, which makes it possible to reduce the cost of parts, and also to eliminate element remnants when creating spaces. Since the high-pressure air is used to blow away the elements as they move away from the stopper attachment device, the element remains do not fly into the stopper attachment device, thereby preserving the function of the stopper attachment device and preventing the production of defective fasteners. be able to. In addition, the high-pressure air passes through the hollow part of the bender and is ejected onto the forming die from the outlet at the front of the hollow part, so there is no need for special nozzles or air introduction parts, and the entire device can be kept compact. be able to.

[Brief explanation of the drawing]

FIG. 1 is a side view partially showing a main part of an embodiment of the device of the present invention, FIG. 2 is a sectional view taken along the line - of FIG. 1, and FIG. 3 is a side view of the same embodiment. FIGS. 4 to 7 are perspective views partially showing the main parts of the device in cross section.
The figure is a partial view for explaining the operation of the same embodiment machine, and FIG. 8 is a partial view showing the fastener chain after processing by the apparatus of the present invention. 13... Forming punch, 14... Cutting punch, 15... Spacer punch, 16
...Fasner chain, 17...Wire rod, 18...
...Element, 20...Bender, 21...Forming die, 31...Air outlet, 35...
...Spacer die, S...stop, d...space.

Claims (1)

[Scope of Claims] 1. A fastener mounting device for fixing fasteners at predetermined intervals to a long fastener chain in which elements are continuously planted, and a fastener mounting device arranged adjacent to the fastener chain and connected to the fastener chain. a space creating device that removes a group of elements over a predetermined length, and the fastener attaching device removes a bender equipped with a forming die and a fastener forming wire supplied onto the forming die to a predetermined length. and a cutting punch that cuts the wire rod into a shape, and a forming punch that forms the cut wire rod piece into a fastener shape and fixes it on the fastener chain, and the head of the element group that is engaged with the space creating device. The bender includes a spacer punch and a spacer die for punching from above and below, and the bender has a hollow shape,
A finishing process for a fastener chain characterized in that an air pressure source for supplying high-pressure air is connected to the hollow part, and a blowout port for blowing out air onto a forming die is formed in the front face of the hollow part. Device. 2. The finishing device according to item 1, wherein the air outlet is open toward the feeding direction of the fastener chain. 3. The finishing device according to item 1, wherein the forming punch and the spacer punch are integrally formed.