JPH0243537Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is a punching device used for punching printed wiring boards and name plates, etc., in which cut pieces such as punched pieces of a workpiece are discharged from the press machine. This relates to an unloader for

BACKGROUND TECHNOLOGY As shown in FIG. 4, a conventional unloader of this kind has a loader main body c fixed to a base b of a press machine a, and a support shaft d rotatably provided on the loader body c, and the other end of the support shaft d Fix arm e to , fix lever f to the other end of support shaft d, and attach the upper end of rod h to slide g with pin j.
A long hole i is provided in the rod h, a pin k provided in the lever f is inserted into the long hole i, a link l is provided in the loader body c, and the arm e and the link l are connected to the chute m. The loader body c was provided with a biasing member n for biasing the chute m toward the press machine a.

Problem to be solved by the invention However, by lowering the slide g, the lever f is rotated clockwise via the lever h and the pin k, and the arm e is rotated to move the chute m diagonally as shown in the imaginary line. Since the chute m is to be retracted downward, there is a risk that the chute m may interfere with other members.

The present invention was developed in view of the above circumstances, and its purpose is to allow the conveyor to move downward while maintaining its horizontal position so that the conveyor interferes with other members. The goal is to prevent people from doing so.

Means and Effects for Solving the Problems The present invention provides a pair of parallel arms 1 and 14 forming a parallelogram on the horizontal part 10 of the machine body 9 so as to be rotatable toward the press machine 1 side. Arm 1
The conveyor 23 is pivotally attached to the lower part of the fuselage 9.
, a biasing mechanism A biases the arm 13 toward the press machine 1 and inserts the conveyor 23 into the press machine 1.
A lever 15 is provided on one side of the arm 13 of the arms 13 and 14, and the lever 15 is provided on the slide 3 of the press machine 1 when the slide 3 is lowered.
An interference member 8 is provided to rotate the arm 13 against the biasing mechanism A by interfering with the biasing mechanism A, and when the slide 3 is lowered, the interference member 8 rotates against the lever 15.
Both arms 13 and 14 are rotated in contact with the press machine 1, so that the conveyor 23 moves downward together with the slide 3 and is retracted to the outside of the press machine 1.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 3.

1 is a press machine, and 2 is an unloader.

The press machine 1 includes a slide 3 and a bolster 4. The slide 3 is provided with an upper mold 6 via a plate 5, and the bolster 4 is provided with a lower mold 7. Further, an interference member 8 is attached to the slide 3.

The conveyor unloader 2 is equipped with a body 9,
Support shafts 11 and 12 are rotatably provided in the horizontal portion 10 of the machine body 9 in the front and rear directions toward the press machine 1 side.
A pair of arms 13 are fixed to one support shaft 11, and a pair of arms 14 are fixed to the other support shaft 12.

A lever 15 is formed on the arm 13 and has an axis perpendicular to the axis of the arm 13.
A roller 16 is pivotally supported on the lever 15. A lever 17 is fixed to the support shaft 11, and the fuselage 9
A bracket 18 is fixed to the bracket 18, and the base end of an operating cylinder 19, which is a biasing mechanism A, is attached to the bracket 18 so as to be swingable by an adjusting mechanism 20, and the piston rod 21 of the operating cylinder 19 is attached to the lever 17. are connected to each other by a pin 22.

23 is a conveyor, and the conveyor 23 has a driving pulley 25 and a driven pulley 26 provided on the support frame 24.
A belt 27 is hung between the support frame 24 of the conveyor 23, and support shafts 27' and 28 are fixed to the intermediate and end portions of the support frame 24 of the conveyor 23.
7', one arm 13 and the other support shaft 28
The other arm 14 is pivotally connected to each of the two arms. Alternatively, the arm 14 may be omitted and the support shaft 28 may be inserted into a long hole member (not shown).

The actuating cylinder 19 is extended when unloaded and allows the conveyor 23 to enter the press machine 1 via the arms 13 and 14.

In addition, in the conveyor 23, the drive pulley 2
5, the belt 27 is rotating in the direction of the arrow.

The upper die 6 of the press machine 1 is equipped with a base member 35 as shown in FIG. A cutting blade 31 is attached. A vacuum cup 32 is attached to the holder 30 at the center of the cutting blade 31, and a passage 33 communicating with the vacuum cup 32 is provided in the base member 35. The passage 33 is connected to a vacuum generator (not shown). be.

Further, on the lower surface of the holder 30, a sponge-like cushion material 34 is placed inside the cutting blade 31.
is installed.

In this press machine 1, the upper die 6 is lowered by lowering the slide 3, and the lower die 7 is lowered by the cutting blade 31.
The upper workpiece is cut and punched, the cut pieces are adsorbed by the vacuum cup 32, and when the slide 3 rises, the cut pieces are lifted while being sucked, and air is blown out from the vacuum cup 32 at the top dead center to release the adsorption of the cut pieces. I do.

Thus, when the slide 3 is at the top dead center, the conveyor 23 is inserted into the press machine 1, and the cut pieces separated from the vacuum cup 32 fall onto the conveyor 23 and are discharged by the rotation of the belt 27.

When the workpiece is carried onto the lower mold 7 and the slide 3 descends, the interference member 8 provided on this slide 3
contacts the roller 16, the arm 13 rotates counterclockwise, and the conveyor 23 is moved outward from the inside of the press machine 1. At this time, the arm 14 also rotates in the same manner as the arm 13, and the operating cylinder 19 is contracted.

In addition, in the above action, the arm 13 is rotated in the vertical direction in conjunction with the vertical movement of the slide 3, so that the conveyor 23 supported at the tip of the arm 13 is also vertically moved in conjunction with the vertical movement of the slide 3. Therefore, there is little change in the distance between the lower end of the slide 3 and the conveyor 23, and the timing of knocking out the workpiece from the upper mold can be greatly increased.

Effects of the Invention Since the present invention is as described above, the interference member 8 can be caused to interfere with the lever 15 by lowering the slide 3, and the conveyor 23 can be retracted out of the press machine 1 via the arms 13 and 14. To this end, the conveyor 23 is moved down a little by the rotation of the arms 13 and 14, but retreats while maintaining its posture horizontally, so that the conveyor 23 does not interfere with other members.

Furthermore, according to the present invention, since there is little change in the distance between the lower end of the slide 3 that moves up and down and the conveyor 23, the timing of knocking out the workpiece from the upper mold can be highly automatic, and therefore the workpiece Even if the type changes and the amount of drawing changes, there is no need to readjust the timing of knocking out the workpiece, making it possible to provide versatility in press forming of a wide variety of workpieces in small quantities.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the configuration of one embodiment of the present invention, Fig. 2 is a view taken from the direction of Fig. 1, Fig. 3 is a vertical sectional view of the upper die of a press machine, and Fig. 4 is a diagram of a conventional unloader. The configuration explanatory diagram, FIG. 5, is a view taken from the direction of arrow V in FIG. 4. 1 is a press machine, 3 is a slide, 8 is an interference member, 13 and 14 are arms, 15 is a lever, 23 is a conveyor, and A is a biasing mechanism.

Claims (1)

[Scope of utility model registration request] A pair of parallel arms 13 and 14 forming a parallelogram are provided on the horizontal part 10 of the machine body 9 so as to be rotatable toward the press machine 1 side.
The conveyor 23 is pivoted to the lower part of the machine body 9, the arm 13 is urged toward the press machine 1 side, and the conveyor 23 is
A biasing mechanism A for inserting the press machine 1 into the press machine 1 is provided,
Also, one arm 13 of the two arms 13 and 14 is
A lever 15 is provided on the side, and an interference member 8 is provided on the slide 3 of the press machine 1 to interfere with the lever 15 and rotate the arm 13 against the biasing mechanism A when the slide 3 is lowered. Unloader.