JPH034416Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a material support device for a press brake.

[Conventional technology]

In most press brake bending operations, the bending material is held by the worker's hand, but in some cases, when bending thin or thick plates, a tracking device is used to hold the material.

Conventional tracking devices require a servo mechanism that moves the holding portion of the device upward in accordance with the bending speed of the material from the start of bending.

[The problem that the idea aims to solve]

The movement of the material holding portion of the conventional tracking device is close to a circular motion centered on the V-groove b of the lower die a, and is therefore not suitable for deep bending. This is because during deep bending, it is impossible to take out the material c from the lower die a unless it is pulled up from the lower die a (No. 6
(See Figures 7 and 8).

The present invention was developed in view of the above circumstances, and its purpose is to automatically lift the material from the V-groove of the lower die after deep bending is completed.
Another object of the present invention is to provide a material support device for a press brake that is capable of suctioning and lowering a material that has been bent and placing it in the same position as the material being carried in and in the carrying-out posture.

[Means and actions for solving the problem]

In the present invention, holding bodies 10, 10 are provided on both left and right sides of a frame 1 equipped with a lower die 3, so as to be movable up and down, and the frame 1 is provided with an urging means for urging the holding bodies 10, 10 upward. provided, both the above-mentioned holding bodies 1
Arms 17, 17 are rotatably provided at the ends of the arms 17, 10, and a connecting member 17a connecting the two arms 17, 17 is provided with a V-groove 2 of the lower mold when the upper mold 6 is lowered.
An adsorbent 1 that adsorbs the material 27 bent at 8
9, and the holding body 10 is provided with a rotation means for rotating the arms 17, 17, and when the upper die 6 is lowered, the holding bodies 10, 1 are moved in conjunction with the lowering of the upper die 6.
0 is provided with a holder lowering means for lowering the upper mold 6, and the V groove 28 of the lower mold 3 is lowered by lowering the upper mold 6.
At the same time, the material 27 is bent and lowered, and at the same time, the holders 10, 10 are lowered by the holder lowering means, the bent material 27 is adsorbed by the suction member 19, and as the upper die 6 is raised, the holders 10, 10 are lowered by the urging means. At the same time as the arm 10 is raised, the material 27 is lifted and removed from the V-groove 28, and the arm 17 is rotated by a rotating means to place the material 27 horizontally.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1 to 5. 1 is a frame, a lower die 3 is provided on the upper surface of the frame 1 via a holder 2, and a stopper 5 is provided on the holder 2 via a support member 4. 6 is the upper mold. The upper mold 6 is attached to a ram 7, and push members 8 (see FIG. 1) are provided at both ends of the ram 7 to face downward. Guide parts 9 are provided at two positions on each of the left and right sides of the frame 1 at positions across the frame 1 in the front and back, and holders 10, 10 are movable up and down on the left and right guide members 9, respectively. ,
and is supported by being biased upward.

That is, a guide rod 11 of a holder 10 is inserted into each guide member 9 so as to be movable up and down, an adjustment nut 12 is attached to the lower end of the guide rod 11, and a spring seat 13 is attached to the guide portion 9. are formed, and the spring seat 13 and the holding body 10
A spring 14 is interposed between the two.

A shaft 16 is attached to each of the left and right holding bodies 10, 10.
are rotatably provided concentrically, and each axis 16
The base of the arm 17 is attached to. The tips of both arms 17, 17 are connected to the connecting member 1.
7a, and an adsorbing body 19 such as a vacuum cup or a magnet is attached to this connecting part 17a, and these act as materials adsorbing mechanism A.
is set up. A lever 18 is provided at the base of one arm 17, and a piston rod 20 of a cylinder device 15 is connected to the lever 18 by a pin 21. This cylinder device 15 is attached to the holder 10 via a bracket 15a.

A synchronous shaft 22 is rotatably supported through the left and right holders 10, 10, and this synchronous shaft 22
Small gears 23, 23 are attached to both ends of.
Also, large gears 25, 25 are fixed to the base ends of the left and right arms 17, 17 concentrically with the center of rotation thereof, and the respective large and small gears 23, 25 mesh with each other.

A buffer plate 2 is provided on the upper surface of each holder 10, 10.
6 and 26 are provided, and each buffer plate 2
6, 26 are opposed to the push members 8, 8. A cover 27 covers the gears 23 and 25.

Next, the operation will be explained.

As shown in Fig. 5A, the material 2 is placed on the upper surface of the lower mold 3.
7 is inserted until its tip contacts the stopper 5. In this state, when the ram 7 descends and the upper die 6 descends, the upper die 6 comes into contact with the material 27, and then the material 28 is inserted into the V groove 28 of the lower die 3 and bent, and the material 27 is moved to the bottom of the figure 5. The state will be as follows.

At this time, as the ram 7 descends, the push members 8, 8 fixed to both sides of the ram 7 come into contact with the holders 10, 10 via the buffer plates 26, 26, and the holders 10, 10 are moved by the spring 14. is pushed down against the As a result, this holding body 10,
10 through arms 17, 17 and connecting member 17a, the material suction mechanism A moves downward in parallel with the holders 10, 10 while maintaining the posture shown in FIG. It comes into contact with the material 27 that has been bent into the state shown in FIG. In this state, the material 27 is adsorbed by the adsorbent 19.

When the above-mentioned bending process is completed and the ram 7 rises, the pushdown by the push members 8, 8 is released, and the left and right holding bodies 10, 10 rise due to the biasing force of the spring 14, and the material suction mechanism A also rises. Then, the state shown in FIG. 5(c) is reached again.

Therefore, the material 27 bent in the above process is also lifted up by the material adsorption mechanism A and removed from the V-groove 28 of the lower die 3.

When the arm 17 is rotated by the cylinder device 15 upon completion of the lifting operation of the material 27, the material suction mechanism A assumes the position shown in FIG. 5
It will be in the unloading position shown in Figure D.

In this state, the suction is released by the suction body 19, and then the arm 17 is rotated upward by the cylinder device 15 to return the material suction mechanism A to the original position shown in FIG. 5E.

Note that the arms 17, 17 by the cylinder 15 mentioned above
The rotations are synchronized by a synchronization shaft 22.

The material adsorption mechanism A is not limited to the above configuration,
The configuration shown in FIGS. 9 and 10 may also be used.

That is, as shown in FIG. 9, a cylinder 31 is provided in the guide portion 9 via a connecting member 30, and the piston rod 32 of this cylinder 31 is connected to the guide rod 1.
1, and may be replaced with the above-mentioned spring 14.Alternatively, as shown in FIG.
4 is provided with a rack 35, and this rack 35 is connected to gear 2.
5 may be meshed with each other to replace the cylinder device 15 described above.

[Effect of idea]

The present invention is as described above, in which the upper die 6 is lowered to bend the material 27 in the V groove 28 of the lower die 3, and at the same time, the holder 10 is lowered by the holder lowering means, and the bent material 27 is transferred to the adsorbent 19. When the upper mold 6 rises, the holder 10 is raised by the urging means, and at the same time the material 27 is lifted and the V
The material 27 can be removed from the groove 28, and the arm 17 can be rotated by the rotation means to place the material 27 horizontally.

In this way, during deep bending, the material 27 can be automatically pulled up from the V-groove 28 of the lower die 3 and brought into the horizontal position, which is the unloading position.

[Brief explanation of the drawing]

FIG. 1 is a rear view showing the lower structure of a press brake equipped with an embodiment of the present invention, FIG. 2 is a plan view of the same,
3 is a sectional view taken along the line of FIG. 2, FIG. 4 is an explanatory diagram of the configuration, FIG. 7th
8 are explanatory views of the lower mold, and FIGS. 9 and 10 are partially omitted structural explanatory views of other embodiments of the material suction mechanism. 1 is a frame, 3 is a lower mold, 6 is an upper mold, 7 is a ram, 8 is a push member, 10 is a holder, 14 is a spring, 15 is a cylinder device, 17 is an arm, 18 is a lever, 19 is an adsorbent, 28 is a V groove.

Claims (1)

[Scope of claims for utility model registration] (1) On both left and right sides of the frame 1 equipped with the lower mold 3,
The holding bodies 10, 10 are provided so as to be movable up and down, and the frame 1 is provided with a biasing means for urging each of the holding bodies 10, 10 upward, so that both the holding bodies 1
Arms 17, 17 are rotatably provided at 0, 10, and the material 27 bent by the V-groove 28 of the lower mold due to the lowering of the upper mold 6 is adsorbed to a connecting member 17a that connects both arms 17, 17. A suction body 19 is provided, and an arm 17,
The ram 7 is provided with a rotating means for rotating the holder 17, and the holder 1
1. A material support device for a press brake, characterized in that it is provided with a holder lowering means for moving 0 and 10 downwards. (2) The material support device for a press brake according to claim 1, wherein the urging means for urging the holding bodies 10, 10 upward is a spring 14. (3) The material support device for a press brake according to claim 1, wherein the urging means for urging the holders 10, 10 upward is a piston-cylinder mechanism. (4) The rotating means for rotating the arms 17, 17 is provided at the base end of the arms 17, 17, and the lever 1
8, the piston supported by the holding bodies 10, 10.
A material support device for a press brake according to claim 1, characterized in that a cylinder device 15 is connected. (5) The rotating means for rotating the arms 17, 17 is provided with a slideable rack on the holder 10, 10 side that engages with a gear 25 provided on the arms 17, 17, and this rack is attached to the holder 10. , 10 side of the press brake. (6) The holding body lowering means is a ram 7 that fixes the upper die 6.
A material support device for a press brake according to claim 1, characterized in that a push member 8 is provided at the bottom of the press brake. (7) Utility model registration claim 1, characterized in that the holding body lowering means is a piston-cylinder mechanism, which also serves as a piston-cylinder mechanism that urges the holding bodies 10, 10 upward. 4. A material support device for a press brake according to item 3.