JPH04104218U - press type equipment - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose of the present invention is to increase mold strength, improve processing accuracy, and downsize in press bending of the edge of a plate-like workpiece using a bias cam mechanism. [Configuration] The upper mold 1 is equipped with a wedge-shaped fixed cam 2, and the lower mold 4 is equipped with a wedge-shaped fixed cam 2.
is provided with a guide surface 13 on which the fixed cam 2 comes into contact, and a processing cam 10 capable of moving forward and backward in the horizontal direction, on which the fixed cam 2 comes into contact with the guide surface 13 and moves forward,
A guide cam 14 is provided on the processing cam 10 so as to be movable forward and backward in the horizontal direction in contact with the processing cam 10 to bend the edge of the workpiece, and a workpiece holder is provided on the guide cam 14 so as to be horizontally movable. The machining cam 1 includes a member 14a and a movable cam 15 that can move up and down to move the guide cam 14 forward and backward by coming into contact with the rear surface of the guide cam 14.
Cam surfaces 10a, 10 that move the movable cam 15 up and down at
b.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a press type device for bending the edge of a plate-shaped workpiece. It is something.

0002

[Conventional technology]

A cross-cam mechanism is generally used as a press die for bending the edge of a plate-shaped workpiece. has been adopted. For example, as shown in Figure 3, the mechanism is A wedge-shaped fixed cam 2 is fixed to an upper mold 1 having a curved blade 5a and a lower mold 4 having a curved blade 5a. a guide cam 5 that is movable in the horizontal direction and has a guide portion 5b with which the fixed cam 2 comes into contact; The guide cam 5 is provided so as to be movable in the horizontal direction, and the fixed cam 2 is brought into contact with the guide cam 5 so as to move forward. The machining cam 6 moves forward, and the machining cam 6 is moved by the downward movement of the fixed cam 2. forward movement and the guide cam 5 moving in a direction approaching the forward movement of the processing cam 6. The edge A of the workpiece W is folded by the processing cam 6 and the curved blade 5a of the guide cam 5 by bringing them together. It is used for bending.

0003

[Problem that the idea aims to solve]

According to the above-mentioned conventional press die, when bending the workpiece W, the draft shown in FIG. The inner cam 5 is pulled to the left by the fixed cam 2, and the processing cam 6 is pushed to the right. Since the machining cam 6 and the curved blade 5a are in contact with each other, the plan on the side where the curved blade 5a is attached is Excessive concentrated stress is applied to the corner part of the inner cam 5, and the curved blade 5a is bent and processed. In addition to deteriorating accuracy, cracks A may occur due to lack of strength at this corner. There is.

0004 In addition, at the return position S of the guide cam 5, interference when the guide cam 5 returns is considered. In this case, the positioning part of the other edge B of the workpiece W cannot be secured, so the workpiece W cannot be bent. Variations occur in the surface accuracy of the processed edge A.

[0005] Furthermore, as shown in Fig. 4, when taking out the workpiece W after processing, it is necessary to bend it. It is necessary to leave a gap S2 so that the cut edge A does not interfere with the curved blade 5a. Therefore, the return stroke S1 of the guide cam 5 increases, and the return stroke S1 of the guide cam 5 increases. If the stroke S1 is secured without interference, it will be difficult to make the lower mold 4 more compact. There is a problem.

[0006] The purpose of this invention is to provide a press type device that eliminates the above conventional problems. be.

[0007]

[Means to solve the problem]

The gist of the present invention to achieve the above purpose is to equip the upper mold with a wedge-shaped fixed cam. Eh, the lower mold has a guide surface that the fixed cam comes into contact with, and the fixed cam that comes into contact with this guide surface. A processing cam that can move forward and backward in the horizontal direction, and this processing It is installed on the cam so that it can move forward and backward in the horizontal direction. A guide cam that bends the edge, and a horizontally movable guide cam installed on this guide cam. The workpiece receiving member contacts the rear surface of the guide cam to move the guide cam forward and backward. a movable cam that can move up and down; It has a side surface.

[0008]

[Effect]

With the above configuration, the fixed cam comes into contact with the machining cam as the upper die descends, causing the machining to take place. At the same time, the movable cam moves upward and pushes the rear surface of the guide cam. The guide cam is moved forward in the direction of the processing cam, and the edge of the workpiece is processed on the processing cam. The bending process is performed using a mechanical cam and a guide cam.

[0009] In addition, the workpiece receiving member provided on the guide cam supports positioning of the entire workpiece. hold

0010

【Example】 Embodiments of the present invention will be described below based on the drawings. In Figure 1, 1 is the upper mold. It has a wedge-shaped fixed cam 2 and a pad 3 that presses the workpiece W toward the lower mold 4. ing.

[0011] The lower die 4 has a guide surface 13 that the fixed cam 2 contacts and backs up. After the fixed cam 2 comes into contact with the guide surface 13 and moves forward in the horizontal direction. A retractable machining cam 10 is provided, and a guide cam 14 is provided on the machining cam 10. is provided facing the processing cam so as to be movable forward and backward in the horizontal direction, and this guide cam A work receiving member 14a is provided on the frame 14 so as to be horizontally movable.

0012 Further, the rear surface of the guide cam 14 is in contact with the guide cam 14, and this guide cam A movable cam 15 that moves the cam 14 forward and backward is arranged to be movable up and down. 16 is here This is a guide surface that backs up the movable cam 15.

[0013] The elevating means for the movable cam 15 includes a lower end of the movable cam 15 at the lower end of the movable cam 15. It has a structure in which multiple stages of cam surfaces 10a and 10b are formed with which the surfaces abut.

[0014] Since the present invention has the structure as described above, the fixing 2 is moved to the lower mold 4 by the downward movement of the upper mold 1. It comes into contact with the guide surface 13 for backup, and also comes into contact with the processing cam 10 for processing. The cam 10 is moved forward to the right in FIG.

[0015] At the same time, as shown in FIG. As shown in FIG. 1, the movable cam 15 that had been The movable cam 15 rises further. As the movable cam 15 rises, the rear surface of the guide cam 14 The guide cam 14 is pushed forward to the left in FIG. In other words, the processing power The cam 10 and the guide cam 14 are moved relatively to each other, and the edge of the workpiece W is A is bent. At this time, the workpiece W is held by the workpiece receiving member 14a. The entire workpiece W is positioned and supported to improve machining accuracy.

[0016] After the above processing, the processing cam 10 moves back to the left in Fig. 1 as the upper mold 1 rises and returns. At the same time, the movable cam 15 comes into contact with the lower cam surface 10a and moves downward. , the guide cam 14 is moved back to the right in Fig. 1, and the lower workpiece is bent as shown in Fig. 2. A gap S2 is formed between the edge A of the workpiece W and the guide cam 14, and the workpiece W is taken out. make it easier. Therefore, in order to form this gap S2, the processing cam 10 is moved backward. This is obtained by the relative movement between the backward movement of the guide cam 14, and the small relative movement between the two. With this amount, a sufficient gap S2 can be secured.

[0017]

[Effect of the idea]

As described above, the present invention is equipped with a wedge-shaped fixed cam on the upper die, and the fixed cam on the lower die. The guide surface that the cam contacts and the fixed cam that contacts this guide surface contact and move forward. A processing cam that can move forward and backward in the horizontal direction, and a processing cam that moves horizontally forward and backward. It is provided so as to be movable forward and backward, and is in contact with the processing cam to bend and process the edge of the workpiece. a guide cam; a work receiving member horizontally movably provided on the guide cam; A movable cover that can move up and down to move the guide cam forward and backward by coming into contact with the rear surface of the guide cam. and the processing cam is provided with a cam surface that moves the movable cam up and down. Therefore, the backward reaction force of the guide cam during bending is backed up by the movable cam. Since it is supported by the guide surface that moves up, the strength is increased and there is no variation in machining accuracy. This allows for highly accurate bending processing.

[0018] In addition, the gap S2 required for taking out the workpiece is created by the backward movement of the processing cam and the guide cam. This can be achieved with a small amount of movement relative to the backward movement of the This has the advantage of making the mold more compact.

[Brief explanation of drawings]

[Figure 1] Cross-sectional view of the present invention

[Figure 2] Cross-sectional view of the state when taking out the workpiece

[Figure 3] Cross-sectional view of conventional device

[Figure 4] Cross-sectional view of the conventional device when taking out a workpiece

[Explanation of symbols]

1 Upper mold 2 Fixed cam 4 Lower mold 10 Processing cam 10a Cam surface 10b Cam surface 13 Information surface 14 Guide cam 14a Workpiece receiving member 15 Movable cam

Claims (1)

[Scope of utility model registration request] 1. An upper die is provided with a wedge-shaped fixed cam, a lower die is provided with a guide surface on which the fixed cam abuts, and the fixed cam that abuts on this guide surface abuts and moves forward in a horizontal direction. A processing cam that is movable backward, a guide cam that is provided on the processing cam so as to be movable horizontally in the horizontal direction and that bends the edge of the workpiece while facing the processing cam, and a guide cam that is movable horizontally on the guide cam. A work receiving member provided;
A press-type device comprising: a movable cam that can move up and down to move the guide cam forward and backward by coming into contact with the rear surface of the guide cam, and the processing cam is provided with a cam surface that moves the movable cam up and down. .