JP3220779B2 - Positioning device for incoming work of press machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for positioning a work to be carried in a press machine.

[0002]

2. Description of the Related Art When press-forming a panel-shaped work, as shown in FIG. 3, an edge of a work W carried into a lower mold 1 in the direction of arrow A is positioned by a positioning device 3. The positioning device 3 is installed on a drawing die 2 for drawing the edge of the work W via a fixed base 4, and the end surface of the incoming work W comes into contact with the fixed base 4 for positioning. Further, a work holder 6 that rotates in a seesaw-like manner by a support shaft 7 that penetrates through the side gauge 5 is fixed on the fixed base 4. , And is held in a horizontal posture by contacting the stopper 8.

In the positioning device 3 having the above structure, an end of a work W carried in from a direction of an arrow A is supported on a work holder 6 which holds a horizontal posture with a predetermined mounting width S, and a side gauge is provided. 5, the edge of the work W is positioned in contact with the upright surface of the work W, and the work D is pushed down by the upper die by the lowering of the upper die, and the work holder 6 is rotated downward by overcoming the tensile force of the spring 9, and 6, the end of the work W is released from the support 6, and the end of the work W is dropped onto the drawing die 2. Thereafter, the work holder 6 is returned to the original position in the horizontal position regulated by the stopper 8 by the tensile force of the spring 9. Is performed.

[0004]

In the above-mentioned conventional positioning device 3, when the product is lifted up from the lower die 1 and taken out from the lower die 1 after the upper die is lifted after the press working of the work W is completed, as shown in FIG. A gap S1 is provided so that the end WE of the work W does not interfere with the work holder 6 returned to the original position in the horizontal direction. The arrangement width S is short.

[0005] Since the mounting width S is short, the end of the work W falls off the work holder 6 before positioning, and there is a problem that the quality of the product is poor and the product is poorly removed due to the displacement.

An object of the present invention is to solve the above-mentioned conventional problems.
When loading a workpiece, the workpiece is supported by a work holder with a sufficiently long mounting part without dropping it to accurately position the workpiece and ensure that the product can be taken out after processing is completed. It is to provide a positioning device.

[0007]

The gist of the present invention for achieving the above object is to provide an apparatus for positioning a work end to be carried on a lower die, which is disposed on a side of the lower die. The lower die is provided integrally with a fixed base fixed on an aperture die which is disposed so as to be movable relative to the lower die in the vertical direction at the side of the lower die, and a window hole is opened in an upright surface, A side gauge for positioning the end face of the work carried into the upright surface in contact with the work piece; a first support shaft rotatably supported by the first support shaft on the fixed base, one end of which is pulled downward by a spring, and a stopper; A first work holder that is in contact with the first work holder and holds a horizontal posture, and penetrates a window hole of the side gauge, and is provided at the other end of the first work holder in parallel with the upper surface of the first work holder, and It is rotatably supported only on the upper part by two support shafts. It is obtained by a second workpiece holder.

[0008]

With the above arrangement, the work is loaded and loaded on the second work holder with respect to the first work holder and the second work holder which hold the horizontal posture, and the end of the work is placed on the upright surface of the side gauge. The edges abut and are positioned.
Next, the upper mold descends and the work is pushed down by the upper mold,
As a result, the first work holder and the second work holder are integrally rotated about the first support shaft with the second work holder facing downward, and the work is dropped into a predetermined position on the lower mold. . When the weight of the work is removed from the second work holder, the first work holder and the second work holder are returned to their original positions in the horizontal direction by the tension of the spring.

The workpiece dropped onto the lower die is pressed to produce a product. When the upper die is raised, the first and second work holders are placed in a horizontal orientation by the tension of a spring. Returned to position. However, when the product is taken out from above the lower mold upward, the edge of the product comes into contact with the second work holder, but this contact causes only the second work holder to move upward with the second support shaft as a fulcrum. The second work holder rotates under its own weight and returns to its original position in the horizontal direction after passing the product.

Therefore, when the product is taken out, the second work holder escapes to allow the product to pass therethrough, so that the work edge supporting length of the second work holder on which the edge of the work to be carried is placed is sufficiently set. The work can be accurately positioned by supporting the work without falling.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 2 denotes a drawing die for drawing the edge of the work W, and is disposed on the side of the lower die 1 so as to be vertically movable relative to the lower die as shown in FIG. Reference numeral 10 denotes a positioning device according to the present invention, which is fixed on the drawing die 2.

As shown in FIG. 2, the positioning device 10 is configured such that an end of a work W carried in from the direction of arrow A comes into contact with one end of a fixing base 11 fixed on the drawing die 2 with bolts or the like. A side gauge 12 for positioning is fixedly provided, and a stopper 15 is fixedly provided on the other end. A window hole 12a is formed in an elevation of the side gauge 12.

A pair of left and right brackets 19 are erected on the upper surface of the fixed base 11, and the first work holder 13 is rotatably supported on the bracket 19 by a first support shaft 14 so as to be vertically rotatable. .

One end of the first work holder 13, which is rotatably supported in the vertical direction by the first support shaft 14, on the stopper 15 side is connected to the fixed base 11 by a spring 1.
6, one end of the first work holder 13 on the side of the stopper 15 abuts on the stopper 15 due to the tensile force of the spring 16, and always maintains a horizontal posture.

The other end of the first work holder 13 on the side gauge 12 side opposite to the stopper 15 has a second end.
The work holder 17 is provided with the window hole 12 of the side gauge 12.
And is rotatably supported by the second support shaft 18 so as to be rotatable only in the upper direction in parallel with the upper surface of the first work holder 13.

In the configuration of the present invention, the normal state of the first work holder 13 and the second work holder 17 before the work W is carried in is as shown by a solid line in FIG. 1 and FIG. This is the original state (a). In this original position state (a), when the work W is carried in the direction of arrow A, the edge of the work W is carried in and placed on the placement width S on the second work holder 17, and the side gauge 12 is moved.
The edge of the workpiece abuts on the vertical surface of the workpiece and is positioned. Next, by lowering the work W with the upper mold by lowering the upper mold, the first work holder 13 with the first support shaft 18 as a fulcrum.
And the second work holder 17 are integrally rotated by turning the second work holder 17 in the downward direction as shown by the arrow C, and are positioned in the work dropping state (b), and the work W is moved to a predetermined position on the lower mold. Set it down.

The work W dropped onto the lower mold is pressed to form a product. When the upper mold is raised, the first work holder 13 and the second work holder 13 are moved by the tensile force of the spring 16.
The work holder 17 is returned to the original position (a) in the horizontal posture.

In such a state, when the product is taken out from above the lower mold upward in the direction of arrow B, the edge of the product comes into contact with the second work holder 17. Only the second support shaft 18 as a fulcrum, rotates with light force above the arrow D, and is in a retracted state (c) allowing the product to pass, and after the product passes, the second work holder 17 rotates by its own weight downward. To the original position (a) in the horizontal posture.

Therefore, when the product is taken out, the second work holder 17 can escape to the retreat state (C) allowing the product to pass through and take out the product, so that the edge of the work W to be carried in is placed. The work placement width S of the second work holder 17 can be set to a sufficient length, and the work W can be supported without dropping and accurately positioned.

[0020]

As described above, according to the present invention, since the mounting width of the second work holder for supporting the incoming work edge can be set to a sufficient length, the work can be dropped. Positioning, and product failure and product removal failure due to product misalignment can be prevented.
Product yield is improved and line stop problems are eliminated.

Further, it is not necessary to change the work placement width due to erroneous prediction of the product edge position at the time of molding.
There is no need for adjustment work for setting the gap S1 so that the product after processing has passed through, and mold design becomes easier.

In addition, a second support for supporting the work edge is provided.
Since the work holder is pivotally supported by the first holder so as to be rotatable upward, when the product is taken out, the edge of the work comes into contact and only the second work holder is rotated upward with a light force to allow the product to pass. be able to.

[Brief description of the drawings]

FIG. 1 is a side view of the device of the present invention.

FIG. 2 is a perspective view of the device of the present invention.

FIG. 3 is a side view of a conventional device.

FIG. 4 is an explanatory view of a defect of the conventional device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Positioning device 11 Fixed base 12 Side gauge 12a Window hole 13 1st work holder 14 1st support shaft 15 Stopper 16 Spring 17 2nd work holder 18 2nd support shaft

Claims (1)

(57) [Claims] 1. An apparatus for positioning a work end carried on a lower die, which is disposed on a side of a lower die, wherein the side of the lower die is movable relative to the lower die in a vertical direction. A side gauge is provided integrally with a fixed base fixed on the arranged drawing die, a window hole is opened in the upright surface, and an end surface of the work carried in the upright surface is positioned in contact with the side gauge, A first shaft rotatably supported by the first support shaft in the vertical direction on the fixed base, one end of which is pulled downward by a spring, and which is in contact with a stopper to maintain a horizontal posture;
A work holder, a second work penetrating through a window hole of the side gauge, and being rotatably supported at the other end of the first work holder in parallel with an upper surface of the first work holder and rotatable only by a second support shaft. A loading work positioning device for a press machine, comprising a holder.