Anti-corner-bending-cracking die

Abstract

The invention provides an anti-corner-bending-cracking die. The anti-corner-bending-cracking die can meet the requirement for the height of a covered edge of a product without affecting strength of the product. The anti-corner-bending-cracking die comprises an upper die part and a lower die part, wherein the upper die part comprises an upper die base, a clamping plate, a large stripper plate, a forming slotting tool and an upper die pressing-in block, the clamping plate is arranged on the lower surface of the upper die base, a first nitrogen spring is fixedly arranged on the upper die base, the lower end of the first nitrogen spring penetrates through the clamping plate and then is connected with an upper mounting groove of the large stripper plate, and the lower surface of the large stripper plate is fixedly provided with a downwards-protruding forming slotting tool and a downwards-protruding upper die pressing-in block; the lower die part comprises a lower die base and a foot pad, the lower die base is fixedly installed on the upper surface of the foot pad, an overall area of the lower die base and the foot pad corresponds to the forming slotting tool, an inner groove is formed in the area of the upper die pressing-in block, and a slotting tool leaning tool, a wear-resisting fixing block, a driving block and a punch wear-resisting guide plate are arranged in the inner groove.

Description

technical field

[0001] The invention relates to the technical field of product bending, in particular to an anti-corner bending cracking mold. Background technique

[0002] For 90°bending and hemming products with a material thickness greater than 2.0mm, the existing processing molds are prone to cracking and difficult to shape when producing products. The existing processing method is to ask the customer to reduce the hemming height on the bending edge to less than twice the material thickness, and then open the hemming angle after the height is reduced, and then use the plastic method to meet the customer's requirements. This method is only suitable for relatively Short wrapping and less than twice the material thickness, this method still has the risk of cracking, increases the risk of defective products, increases the number of mold repairs and the appearance inspection of the product, and increases the cost, so it is urgent to improve this kind of wrapping Edge technol...

Images