Die chute structure for oblique blanking

Abstract

The invention relates to the technical field of dies and discloses a die chute structure for oblique blanking. The die chute structure is mounted between an upper die and a lower die of a die. The upper die is provided with male dies while the lower die is provided with female dies. The chute structure comprises rail plates and sliders; the rail plates are of oblique sliding surfaces provided with guide grooves; the sliders are provided with guide blocks matched with the guide grooves and further provided with male die via holes matched with the male dies. Elastic resetting devices are arranged on the sliders and used for resetting the sliders to the original positions after blanking of the male dies. Both the guide grooves and the guide blocks are of square structures. Due to the guide grooves and the guide blocks which are of the square structures, defects of unbalance stressing and shortening of die service life caused by friction force of T-shaped grooves are overcome. The die with the chute structure has the advantages of processing easiness, balanced stressing during operation and greatly prolonged service life.

Description

technical field [0001] The invention relates to the technical field of molds, and more specifically relates to a mold chute structure for oblique punching patterns. Background technique [0002] Such as figure 1 As shown in , it is a structural diagram of an existing typical pot frame product, which is a stepped product with a slope in structure. In the production of continuous molds, excess material needs to be punched out at A and B to obtain windows. In the design of the mold structure, since the pot frame products have inclined surfaces, oblique punching is generally used for punching. [0003] Such as figure 2 As shown, the punching method in the prior art adopts the chute structure of the slider and the guide rail plate. More precise guidance and accurate punching; however, in the actual processing of the mold, it is difficult to ensure the parallelism and flatness of multiple surfaces at the same time, and the ideal state cannot be achieved. At the same time, whe...

AI Technical Summary

Problems solved by technology

[0003] like figure 2 As shown, the punching method in the prior art adopts the chute structure of the slider and the guide rail plate. More precise guidance, accurate punching; but in the actual process of mold processing, it is necessary to ensure the parallelism and flatness of multiple surfaces at the same time, the processing is more difficult, and the ideal state cannot be achieved

At the same time, when the material is returned, because there are too many contact surfaces, there is friction between the surfaces, so that the spring will produce unbalanced force when the material is returned. The force analysis of the structure is as follows: image 3 As shown, it includes stripping force F1, punch friction force F2, stripping spring force F3, self-gravity G and T-slot friction force F4. Since T-slot friction force F4 has many stress surfaces, in production practice The slider 23 and the punch are easily stuck in the guide rail plate 20, and when the punch is not completely withdrawn from the die and the mold starts to move upward, the mold will explode, which directly reduces the service life of the mold

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