CN210754809U - A mechanism for preventing workpiece deformation during stamping - Google Patents

Abstract

The utility model belongs to the technical field of the punching press technique and specifically relates to a mechanism for preventing work piece warp among stamping process, the circular terrace die of interior kicking block is equipped with including the front end, interior kicking block and circular terrace die threaded connection, be equipped with on the circular terrace die apart from the hole of circular terrace die central line equiangular distance symmetry, the hole runs through circular terrace die extends to the bottom surface, the hole be equipped with hole clearance fit's three last push rod, it is equipped with the elastic element spring to go up the push rod head, has other work pieces to push down the spring on the spring. The utility model discloses simple structure, method convenient to use, the influence of blanking power to the work piece when not only can avoiding follow-up blanking can also be released the lock ring effectively and be in the work piece of interior kicking block.

Description

A mechanism for preventing workpiece deformation during stamping

technical field

The utility model relates to the field of stamping technology in material forming, in particular to a mechanism for preventing deformation of workpieces in the stamping process.

Background technique

Blanking refers to the use of a die to separate the sheet into two parts. In order to improve the processing efficiency, a progressive die is often used, which can perform multiple processes such as blanking and punching in a pair of molds, with extremely high productivity. In the prior art, when punching the inner and outer contours of a special-shaped part, according to the sequence of the progressive die process, punching is required first and then blanking. For some special situations and parts of narrow-sided workpieces that are often encountered in production practice, that is, the lap size of the workpiece is close to or smaller than the limit size, because the punching force of the post blanking process will affect the size of the hole punched out first, so that When the material is punched, the workpiece is deformed and the processed workpiece is scrapped.

SUMMARY OF THE INVENTION

The purpose of the utility model is to provide a mechanism for preventing the deformation of the workpiece during the stamping process, which can reduce the deformation of the blanking workpiece caused by the blanking and blanking force, and improve the qualified rate of the blanking workpiece.

The mechanism for preventing deformation of workpieces in the stamping process of the utility model includes a circular punch with inner support blocks, and is characterized in that: three equal distances are arranged on the circumference close to the edge of the circular punch. through holes; the three through holes are respectively clearance-fitted with the three upper push rods, and the heads of the three upper push rods are respectively provided with springs.

Further, the inner support block is threadedly connected with the lower end of the circular punch.

Further, one end of the spring is abutted against the spring seat structure on the upper push rod, and another workpiece is placed on the other end to press the spring.

The beneficial effects of the utility model are: by increasing the inner support block, the deformation when the outer contour of the blanking workpiece is reduced, and the qualified rate of the blanking workpiece is improved; secondly, by adding an upper push rod, the hoop is placed inside the blanking after the blanking is completed. The workpiece on the support block is pushed out. The utility model is simple and convenient to use, and can effectively restrain the deformation of the workpiece during the fine blanking process.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the exploded schematic diagram of the utility model, sheet metal and workpiece;

Fig. 3 is the circular punch blanking schematic diagram of the utility model;

FIG. 4 is a schematic cross-sectional view of the utility model.

Detailed ways

The technical solutions of the present utility model are further described below in conjunction with the accompanying drawings of the present utility model.

Referring to FIGS. 1 to 4 , a mechanism for preventing deformation of workpieces during the stamping process is shown, including a circular punch 3 equipped with an inner support block 2 . There are three through holes equidistant from the circumference, (the three through holes extend through the circular punch 3 to the lower surface of the circular punch 3); the three through holes are respectively spaced from the three upper push rods 5 In cooperation, the heads of the three upper push rods 5 are respectively provided with springs 6 .

The inner support block 2 is threadedly connected with the lower end of the circular punch 3 .

One end of the spring 6 abuts against the spring seat structure on the upper push rod 5 , and another workpiece presses the spring on the other end.

Working principle: In the progressive die, the material is punched first. After punching, the shape of the sheet is shown in Figure 2, and special-shaped holes are processed. In the subsequent blanking process, the sheet 1 is advanced and moved forward. The circular punch 3 moves downward, and the inner support block 2 first enters the special-shaped hole, which stabilizes the inner contour shape of the workpiece and effectively avoids elastic recovery. resulting deformation. After the blanking is completed, the workpiece is tightly bound to the inner support block 2, the circular punch 3 retreats upward, and the upper push rod 5 moves downward due to the elastic force of the spring 6, pushing the workpiece 4 out to complete the processing.

Although the implementation case of the present invention has been clearly and completely described, for those of ordinary skill in the art, various changes, Modifications and substitutions. The scope of the present invention is defined by the appended claims and their equivalents.

Claims (3)

1. A mechanism for preventing deformation of a workpiece during stamping, comprising a circular punch (3) equipped with an inner support block (2), characterized in that: on the circumference close to the edge of the circular punch (3) Three through holes are arranged at equal distances; the three through holes are respectively clearance-fitted with the three upper push rods (5), and the heads of the three upper push rods (5) are respectively provided with springs (6). 2 . The mechanism for preventing workpiece deformation during stamping according to claim 1 , wherein the inner support block ( 2 ) is threadedly connected to the lower end of the circular punch ( 3 ). 3 . 3. A mechanism for preventing workpiece deformation during stamping according to claim 1 or 2, wherein one end of the spring (6) abuts against the spring seat structure on the upper push rod (5). , There are other workpieces on the other end to press the spring.

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