JPH0565434U - Positioning device for workpieces in press machines - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a workpiece positioning device which can stably feed a workpiece to a fixed position of a mold by utilizing the suction force of air. A bolster 1 is provided with an air passage 4 opened on the upper surface of the bolster 1, a lower die 2 mounted on the bolster 1 is provided with a through hole 7 penetrating the lower die 2, and the air passage 4 is provided. And a suction device is connected to supply negative pressure air to the upper surface of the lower die 2.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a workpiece positioning device for a press machine.

[0002]

[Prior Art]

 In press working, when a processed product is automatically supplied to a die, it is important that the processed product is supplied to a predetermined position.

Conventionally, a device for supplying a processed product to a fixed position of a mold has been proposed. As an example, there was a device in which a magnet was embedded in a mold, but metal powder was attached to the magnet, Therefore, the product may be damaged or a problem may occur. In addition, some products must not be magnetized, and it was not practical to supply a processed product to a predetermined position using the attractive force of a magnet.

In addition to this, there is also an apparatus for positioning the pilot pin by raising it in the die, but when using the pilot pin, there is a problem such as difficulty in supplying the processed product.

[0005]

[Problems to be solved by the device]

 The problem to be solved by the present invention is to provide a work product positioning device that can stably supply a work product to a fixed position of a mold by utilizing the suction force of air.

[0006]

[Means for Solving the Problems]

 Means for solving the problem in the present invention is to provide an air passage opening on the upper surface of the bolster in the bolster, and to provide a lower die mounted on the bolster with a through hole penetrating the lower die. A suction device is connected to the passage to supply negative pressure air to the upper surface of the lower die.

[0007]

EXAMPLE FIG. 1 is an overall assembly drawing. In the figure, a lower die 2 is placed on a bolster 1, and a punch 3 is provided to be movable up and down with respect to the lower die 2. Pressing is performed by the ascending and descending motion of. The lower die 2 has an assembly structure of an inner die 20 and an outer die 21.

The bolster 1 is provided with an air passage 4 reaching the upper surface from the side portion, and a suction device (not shown) is connected to the suction port 5 provided on the side portion, and the air passage 4 is provided on the upper surface. It is opened at the portion of the suction port 6 provided. Further, the lower die 2 mounted on the bolster 1 is formed with a through hole 7 penetrating the inner die 20 so that the suction port 6 and the through hole 7 communicate with each other. .

Therefore, negative pressure air from the suction device is supplied to the through hole 7 of the lower die 2. In addition, 8 is a processed product to be molded.

The embodiment has the above-described structure, and when the processed product 8 is conveyed to the lower die 2, negative pressure air is supplied from the suction port 5 by the suction device at the same timing. Negative pressure air is also supplied to the through holes 7 of the inner die 20, and the lower die 2 adsorbs the lower surface of the processed product 8 and sets it at a predetermined position.

In this state, the punch 3 is operated to form the processed product 8. Also, after the molding process is completed, the supply of negative pressure air to the lower die 2 is interrupted, and when the next processed product is conveyed or immediately before that, negative pressure air is supplied again. .

By installing a pressure switch on the suction port 5, it is possible to check the presence or absence of a processed product during processing.

[0013]

[Effect of the device]

 In the present invention, negative pressure air is supplied to the lower die and the suction force of the negative pressure air is used to set the workpiece at a predetermined position of the lower die. Unlike the above case, it has the effect of not adversely affecting the material of the processed product, and unlike the case of using pins, it facilitates the transfer work.

Further, since the negative pressure air is normally easily used in the factory, the present proposal has a high utility value because no equipment cost is required.

[Brief description of drawings]

FIG. 1 is a sectional view of the entire assembly.

[Explanation of reference symbols] 1 bolster 2 lower die 3 punch 4 air passage 5 suction port 6 suction port 7 through hole 8 processed product 20 inner die 21 outer die

Claims (1)

[Scope of utility model registration request] 1. A bolster is provided with an air passage opening to an upper surface of the bolster, a lower die mounted on the bolster is provided with a through hole penetrating the lower die, and a suction device is connected to the air passage. A workpiece positioning device for a press machine, wherein negative pressure air is supplied to the upper surface of the lower die.