Pressure maintaining mechanism for stamping die

Abstract

The invention discloses a pressure maintaining mechanism for a stamping die. The pressure maintaining mechanism is characterized by comprising a fixed shaft, a hollow motor, a driving part, a rotatingpart, a connecting rod and a limiting cylinder, wherein the rotating part comprises a rotating disc and a rotating rod arranged on the rotating disc; the outer end of the rotating rod is hinged to the upper end of the connecting rod; the lower end of the connecting rod is used for being hinged to a movable die to push the movable die to move up and down; a first transmission groove and a second transmission groove are formed in the outer circumferential wall of the rotating disc; a first limiting groove and a second limiting groove are oppositely formed in the inner circumferential wall of the rotating disc; a sliding cavity is formed in the driving part; a transmission block is arranged in the sliding cavity in a sliding mode; the limiting cylinder is arranged at the end part of the fixed shaft; an inserting strip is arranged at the output end of the limiting cylinder; and the inserting strip is arranged in an inserting groove in a sliding mode and is used for pushing a limiting block to be inserted into the first limiting groove or the second limiting groove. According to the pressure maintaining mechanism for the stamping die, in the stamping process, a stamping part can be shaped, pressure maintaining and cooling are carried out, and the stamping quality of the stamping part is improved.

Description

technical field [0001] The invention relates to the field of stamping, in particular to a pressure maintaining mechanism for a stamping die. Background technique [0002] In production and life, many products need to be stamped from thin metal sheets (metal sheets with a thickness of less than 2mm). During the stamping process of the sheet, it is necessary to use the upper die and the lower die of the stamping equipment to stamp the sheet into a specific shape, and then take out the stamped sheet. In the prior art, in the stamping process of the thin plate, the upper die and the lower die are separated immediately after the thin plate is punched. Since the thin plate will generate strain forces in all directions during the stamping deformation process, and the thickness of the thin plate is small, in the strain force. Under the action, certain deformation will occur, which seriously affects the quality of the product. [0003] For example, the existing Chinese utility mode...

AI Technical Summary

Problems solved by technology

In the prior art, in the stamping process of the thin plate, the upper mold and the lower mold are separated immediately after the stamping of the thin plate is completed. Since the thin plate will generate strain forces in various directions during the stamping deformation process, and the thickness of the thin plate is small. Under the action, there will be a certain deformation, which seriously affects the quality of the product.

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