JP3266894B2 - Press work handling method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work handling method between two presses, and more particularly to a robot handling method.

[0002]

2. Description of the Related Art Conventionally, when a workpiece needs to be processed in a first step by a press, and then needs to be turned upside down and mounted on a lower die of a second step press, first, a work is performed after the first step. The upper surface of the work placed on the lower mold is sucked by a suction cup or the like and taken out by the first handling robot. The removed work is gripped by sucking the lower surface of the work from below with a second handling robot, sucking and sucking the first handling robot, and the second handling robot flips the work piece upside down. It is mounted on the lower die of the second step press.

[0003]

However, the above-mentioned method has a drawback that equipment costs are high because two handling robots are used between two steps of pressing.
SUMMARY OF THE INVENTION An object of the present invention is to reduce equipment costs by performing work handling of a press between two processes involving reversal of a work by a single handling robot.

[0004]

According to the present invention, there is provided a work handling method for mounting a work, which has been subjected to a first press process, upside down on a lower die of a second press, wherein the first press and the A suction robot having a handling robot having an arm provided at the tip with a wrist rotatable during a second press, and a workpiece provided on an upper die of the first press at the end of the step of the first press; Adsorb to
The upper die is raised, the work is gripped from below by a gripping device provided on the wrist, the work is removed from the upper die, the arm is moved out of the first press, and the arm is moved. A method of mounting the work on the lower mold of the second press by moving the arm upside down together with the wrist by moving the work out of the first press, and moving the arm.

[0005]

The upper die of the first press 1 is provided with a suction device for sucking and holding a part of the work, and when the first step is completed, the work is sucked to the upper die. Work piece in this state is 1
The workpiece is gripped by two handling robots, the work is inverted by the rotation of the wrist, and moved to the second press. Therefore, the work is mounted on the lower mold of the second press without using two handling robots. be able to.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
FIGS. 1 and 2 are side views showing an embodiment of the present invention.
A handling robot 3 is provided between a first press 1 for processing in the process and a second press 2 for processing in the second process. An arm 31 of the handling robot 3 is provided at its tip with a wrist 32 that can rotate 180 degrees or more.
Is provided. As shown in FIG. 3, the upper die 11 of the first press 1 sucks and holds a part of the work W on the root of the punch 12.
3 is provided, and a suction force is generated by a vacuum device (not shown). A die 15 is provided on the lower die 14 of the first press 1 and a plate-shaped material is pressed against the die 15 by the punch 12 to form a bowl-shaped part. The upper die 21 and the lower die 22 of the second press 2 are provided with a die and a punch for positioning the work W after the processing in the first step and performing the processing in the second step. Here, a handling operation for moving a workpiece from the first press 1 to the second press 2 will be described. After the upper mold 11 is lowered to complete the molding of the work by the punch 12 and the die 15, the work W is sucked to the upper mold 11 by the suction device 13, and the upper mold 11 is raised as it is. In this state, FIG.
As shown in FIG. 5, the arm 31 of the handling robot 3 is moved, the wrist part 32 is rotated so that the gripping device 33 is turned upward, the work W sucked by the upper mold 11 is gripped from below, and Decrease adsorption power. Next, the arm 3 of the handling robot 3 is moved to lower the gripping device 33 and to move out of the first press 1,
The work W is turned upside down together with the gripping device 32 by rotating the wrist 32. In the state where the work W is turned over in this manner, as shown in FIG. 2, the gripping device 33 is moved onto the lower die 22 of the second press 2, and the gripper 33 is lowered on the lower die 22. Then, the work W is mounted on the lower mold 22. When the mounting of the workpiece is completed, the gripping force of the gripping device 33 is reduced to release the workpiece W, and the arm 3 is moved to move the gripping device 33 to the second position.
Out of the press 2. When the work W is in close contact with the upper die 11 or the punch 12 during the press forming, a stripper device (not shown) may be provided around the punch 12 and the suction device 13 may be provided on the lower surface of the stripper device. When the work is made of iron, the suction device and the holding device may be configured to generate a suction force or a holding force by an electromagnet.

[0007]

As described above, according to the present invention, a single handling robot can perform the work handling of the work between presses with the reversal of the work, the structure is simple and the probability of occurrence of a failure is high. And the equipment cost is reduced.

[Brief description of the drawings]

FIG. 1 is a side view showing a state during operation of an embodiment of the present invention.

FIG. 2 is a side view showing another state during operation of the embodiment of the present invention.

FIG. 3 is a side view showing an upper die and a lower die of the first press according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1st press 11 Upper die 12 Punch 13 Suction device 14 Lower die 15 Dice 2 2nd press 21 Upper die 22 Lower die 3 Handling robot 31 Arm 32 Wrist part 33 Grasping device

Claims (1)

(57) [Claims] 1. A work handling method for mounting a work, for which a first press step has been completed, upside down on a lower die of a second press, wherein the first press and the second press
A handling robot having an arm provided with a wrist that can rotate at the end of the first press is installed, and at the end of the step of the first press, the work is suctioned by the suction device provided on the upper die of the first press. The upper die is raised, the work is gripped from below by a gripping device provided on the wrist, the work is removed from the upper die, and the arm is moved out of the first press, A work handling method for a press, wherein the work is turned upside down together with a wrist, and the arm is moved to mount the work on a lower die of the second press.