JPH07969Y2 - Top stopper attachment device for slide fasteners - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention bends a wire (flat metal wire) cut into unit lengths into a U-shape to form an upper stopper, and the upper stopper. The present invention relates to a slide fastener upper stopper attachment device for manually inserting the side edge portion of a fastener stringer and swaging the upper stopper.

[Conventional technology]

An attachment device of this kind is disclosed, for example, in US Pat. No. 3,415,293.
The one disclosed by No. (c1.140-93) is known. In the device of this publication, the wire 46 is inserted in front of the die 126 as shown in FIG. 22, and the upper jaw 140 and the lower jaw 1
By moving 48 toward the wire, cutting the wire as shown in FIGS. 24 and 25 and bending it in a U shape, and further advancing it while holding the bent upper stopper between both jaws, By retracting the die laterally, and then manually inserting the side edge of the fastener stringer into the upper stopper as shown in FIG. 12, and maintaining the state to further advance both jaws, As described above, the tip of the upper jaw is pressed toward the lower jaw by the roller and the cam surface of the upper jaw, and the upper stopper is caulked and attached by the pressing operation.

[Problems to be solved by the invention]

According to the above-mentioned conventional device, as shown in FIGS. 9 and 14 showing the mounting state of the upper stopper, the upper stopper is further caulked while further advancing from the position when the fastener stringer is inserted. Thus, the operator must hold the fastener stringer against the machine so that it cannot be pushed forward with the advancing top stop. In addition, the upper and lower jaws start to retreat immediately after crimping, but the upper stoppers are crimped and the thickness is thin, so it will be easier to slip out than both jaws for the time being, but in theory On the other hand, it is necessary for the worker to pull out the fastener stringer from both jaws with great effort, which is dangerous in operation and
Since it is crimped while moving and it holds by giving resistance to movement, it is extremely unstable, such as being displaced from various positions, and the mounting position of the upper stopper is incorrect, so skill and technology are required for mounting. There was a drawback.

An object of the present invention is to solve the above problems, and to provide an upper stopper attachment device for a slide fastener that can be normally and surely attached to a desired position and can perform work safely. is there.

[Means for solving problems]

A solution according to the present invention is to provide a casing part behind a beak part formed by keeping a guide hole for an upper lip and a lower lip and forming an upper stop from a wire as a material for the upper stop and inserting the upper stop into the beak part. The casing has a protruding length of the lower lip of the beak portion shorter than that of the upper lip, and a caulking punch is vertically movable toward the upper lip of the beak portion within a space between the tip of the lower lip and the tip of the upper lip. The part is provided with a space part for supplying a wire serving as an upper stopper material to the rear of the beak part, and a curling die for entering and exiting the space part at right angles to the wire supply direction is provided,
Arranging a cutting punch and a bending punch movable in the direction of pressing the curling die against the wire facing the space and a plunger sandwiched between the punches,
It is characterized in that the plunger is formed so as to be able to penetrate into the guide hole of the beak portion from the space portion.

[Action]

Therefore, by advancing the cutting punch, bending punch and plunger together in the casing part, the wire protruding into the space part is cut by the cutting punch, and the cut upper stopper material is fed by the cutting punch and the bending punch. The curling die is bent into a U shape by the curling die, the bent portion is pressed by the plunger, and the cutting punch, the bending punch, and the plunger are advanced together, so that the curling die escapes from the space portion.
The upper stopper bent in a letter shape is inserted into the guide hole of the beak portion. After that, by further advancing only the plunger,
Transfer the upper stopper over the upper surface of the lower lip to the caulking punch. At this time, the plunger is kept in contact with the upper stopper as it was when it was pushed, and then the fastener stringer is manually inserted into the upper stopper held between the upper lip and the crimping punch to raise the crimping punch. By doing so, the upper stopper is swaged and attached to the fastener stringer.

〔Example〕

To explain the present invention in detail, a mechanized embodiment is shown in FIG. 5, in which a casing portion 3 which is long in the lateral direction is projected in the middle portion of the standing frame 1, and a wire is provided at the upper end portion of the frame 1. The reel 2 around which 26 is wound is pivotally supported, and its wire
A feeder 4 for supplying 26 to the tip portion of the casing portion 3 is swingably provided up and down, and a beak portion 7 is further provided at the tip portion of the casing portion 3.

Furthermore, a cavity 5 is formed in the casing 3 in the longitudinal direction thereof.
And a space portion 6 into which the wire 26 is inserted is continuously provided at the tip of the hollow portion 5, and the beak portion 7 is fixed to the head portion continuously from the space portion 6 and is added to the beak portion 7. A tightening punch 8 is attached.

As shown in FIG. 1, inside the cavity 5, a cutting punch 9 is provided on the upper side and a bending punch 10 is provided on the lower side.
Also, the plunger 11 is fitted between both punches 9 and 10, and the tips of both punches 9 and 10 are aligned with each other, but the plunger 11 is retracted from the tips of both punches 9 and 10. In order to keep, both punches 9 and 10 and plunger 11 are beaked by beak part 7 with a pair of cylinders 12 and 13 combined as shown in FIG.
It is formed so that it can be advanced toward the side and only the plunger 11 can be advanced to enter the beak portion 7. Both punches
The 9, 10 and the plunger 11 may be driven by using an appropriate mechanism that is driven under the above operating conditions. In addition, a stopper 14 that contacts the rear end surface of the beak portion 7 is provided at the tip of the bending punch 10.
And a slope for lowering the curling die 17 to the rear is formed.

As shown in FIG. 1, a cutting die 15 that comes into contact with a cutting punch 9 is fixed to the upper portion of the hollow portion 6, and a spring (not shown) is provided in the space portion 6 from the side of the casing portion 3. Equipped with a movable plate 16 that rushes with the urging force of the
11 is provided so as to face the bending punch 10, and has a tilted cam surface 18 with a chamfered corner at the corner of the lower end of the movable plate 16 on the bending punch 10 side. Contact the cam surface 18 in the middle of
The above-mentioned slope (not shown) that pushes 16 out of the space 6
Have. Further, the cutting die 15 is provided with a through hole 19 leading from the upper surface thereof to the space 6 toward a position slightly rearward of the position where the curling die 17 is projected, and the wire 26 is inserted into the through hole 19. The required amount is supplied into the space 6.

As shown in FIG. 1, the beak portion 7 has a guide hole 22 between the upper lip 20 and the lower lip 21 into which the plunger 11 can be inserted, and
21 has a tip portion side formed shorter than the upper lip 20, and the caulking punch 8 is exposed to the shortened portion. Therefore, the tip of the beak portion 7 is composed of the upper lip 20 and the caulking punch 8.

As shown in FIG. 1, the caulking punch 8 has a pin 23 on the lower lip 21.
Is integrally provided on the upper end of a lever 24 pivotally supported in the front-back direction, and the lower end of the lever 24 is connected to a piston rod 29 of a cylinder 25 different from the above.

In the figure, 27 is an upper stopper formed of the wire 26, and 28 is a fastener stringer.

Use the above attachment device to attach the top stop 27 to the fastener stringer.
As shown in FIG. 1, after attaching the wire 26 into the space 6 by the required length required to form the upper stopper 27, as shown in FIG. , 10 and the plunger 11 at the same speed, and the cutting punch 9 cuts the wire 26, and immediately after that, both punches 9 and 10 are cut.
Then, the wire 26 cut by the plunger 11 and the curling die 17 is bent into a U shape. The bent upper stopper 27 is sandwiched in the inner space formed between the punches 9 and 10 and the plunger 11. When the upper stopper 27 is further sandwiched and advanced, the curling die 17 moves into the space 6 Pushed out from inside,
As shown in FIG. 3, both punches 9 and 10 are beaked by the stopper 14 on the beak portion 7.
Although it is stopped at the rear surface, only the plunger 11 further advances and the upper stopper 27 is inserted into the guide hole 22 of the beak portion 7, and the upper stopper 27 is clamped by the upper lip 20 of the beak portion 7 and the caulking punch 8. At that point, the advance of the plunger 11 is stopped. Therefore, by manually inserting the side edge of the fastener stringer 28 into the upper stopper 27 that holds it, and driving the lever 24 while maintaining that state, the upper stopper 27 is swaged and attached to the fastener stringer 28. To be After that, the lever 24 is moved back, and the plunger 11 and both punches 9 and 10 are retracted to return to the state of the next mounting operation.

[Effect of device]

According to the upper fastener attaching device for a slide fastener according to the present invention, the upper stopper formed by cutting the tip of the wire supplied to the casing and bending it into a U-shape is attached to the tip of the beak portion by the plunger. It is guided to the end opening and a caulking punch is provided facing the tip opening of the beak part.The upper stopper clamped by the tip opening of the beak part is sandwiched by the caulking punch and Since the tightening punch is movably provided toward the upper lip of the beak part, it means that the upper stopper has been crimped at the position where it was originally installed, and the fastener stringer is stationary without being pressed. It can be attached by crimping as it is. Therefore, the work can be carried out safely, and the work can be normally and surely mounted at a predetermined position.

Furthermore, since the lower lip of the beak part is short and a caulking punch is provided at the shortened part so as to face the tip of the upper lip, the distance between the guide holes provided between the upper and lower lips does not change. Yes, from this, the plunger can be inserted to the tip of the lower lip, the upper stopper can be reliably transferred to above the crimping punch, and there is no need to retract the plunger during crimping. Therefore, the bent portion of the upper stopper during crimping can be supported, and the upper stopper does not shift so as to retract when crimping, and the upper stopper can be accurately attached.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a structure of an essential part of a slide fastener upper stopper attaching device according to the present invention, and FIG.
FIGS. 4 to 5 are sectional views showing the operation sequence for mounting, and FIG.
The figure is a side view showing a mechanized embodiment. 3 ... Casing part, 6 ... Space part, 7 ... Beak part, 8 ...
… Crimping punch, 9… Cutting punch, 10… Bending punch, 11… Plunger, 15… Cutting die, 17… Curling die, 20… Upper lip, 21…
… Lower lip, 22 …… Guide hole, 26 …… Wire, 27 …… Top stopper, 28 …… Fastener stringer

Claims (1)

[Scope of utility model registration request] 1. An upper stopper is formed from a wire 26, which is a material for the upper stopper, and is inserted into the beak portion 7 behind the beak portion 7 in which an upper lip 20 and a lower lip 21 are formed so as to keep a guide hole 22. The casing portion 3 is provided, the protruding length of the lower lip 21 of the beak portion 7 is made shorter than that of the upper lip 20, and the caulking punch 8 is placed in the space between the tip of the lower lip 21 and the tip of the upper lip 20. The casing part 3 is provided with a space part 6 at the rear of the beak part 7 for supplying a wire 26 as an upper stopper material,
A curling die 17 is provided which enters and exits the space 6 at right angles to the supply direction of the wire 26, and the cutting punch 9 and bending punch 10 are movable in the direction of facing the space 6 and pressing the wire 26 against the curling die 17. Also, a plunger 11 sandwiched between the punches 9 and 10 is disposed, and the plunger 11 is formed so as to be able to project from the space portion 6 into the guide hole 22 of the beak portion 7. Top stopper attachment device for slide fasteners.