Continuous stamping die for controlling back jacking of product in dislocation mode

Abstract

The invention discloses a continuous stamping die for controlling back jacking of product in dislocation mode. The continuous stamping die comprises an upper mold and a lower mold, wherein the upper mold comprises an upper mold base, a demolding baffle, a demolding baffle insert core, a first spring, an upper forming punch, a guide column and an ejection block, the lower mold comprises a lower mold base, a lower forming punch, a lower material pressing plate, a material lifting plate and an anti-back-jacking device, and the anti-back-jacking device comprises a movable block, a movable column, a fixing seat, a thimble, a third spring, a fourth spring and a fifth spring; a containing groove is formed in the fixing base, the movable column is installed in the movable block, one end of the fifth spring is installed on the lower mold base, and the other end of the fifth spring is abutted against the other end of the thimble; and a L-shaped structure is arranged on the lower material pressing plate, and a 7-shaped structure is arranged at one end of the moving column. The continuous stamping die has the following advantages that by arranging the anti-back device, plastic of an upper mold spring arranged on the upper mold base is reduced, so that structure of the die is simplified, cost of the die is reduced, and production cost can also be reduced.

Description

technical field [0001] The invention relates to the field of metal stamping dies, in particular to a continuous stamping die for dislocation-type control of product back-to-top. Background technique [0002] Continuous die refers to the cold stamping die in which the press uses strip-shaped stamping raw materials in one stamping stroke, and uses several different stations on a pair of molds to complete multiple stamping processes at the same time. The belt moves once at a fixed distance until the product is completed. [0003] At present, in the die stamping industry, when the die is continuously punched, the stamping die needs to be restored to its original state for re-stamping. The ordinary drawing forming method cannot control the product's back-to-top defect. Once the product is back-to-top, the product will be unqualified; figure 1 As shown, the punching die in the prior art needs to be opened after the raw material is punched and formed, that is, the upper die base 1...

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Problems solved by technology

[0003] At present, in the mold stamping industry, when the die is continuously punched, the stamping die needs to be restored to its original shape for re-stamping. The ordinary drawing forming method cannot control the back-up defect of the product. Once the product back-up occurs, the product will be unqualified; if figure 1 As shown, the stamping die in the prior art needs to open the mold after the raw material is stamped and formed, that is, the upper mold base 1 drives the upper forming male 2 to move upward, but at the same time, the lower stripping plate 4 on the lower mold base 3 also It will move upward under the drive of spring 5. In order to prevent the product from returning to the top, it is necessary to install a large number of upper die springs 6 on the upper die base 1. The upper die spring 6 will push the upper forming male 2 to press the product on the lower stripping plate. 4 move upward together for a certain distance, so as to prevent the lower stripping plate 4 from suddenly driving the product back onto the upper forming male 2 during the upward movement of the upper forming male 2, but this solution requires a large number of The upper mold spring 6 makes the mold structure complex and increases the cost of the mold. Because there are many upper mold springs, a very large punching force is required to drive the upper mold. Conducive to enterprises to save production costs

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