Stamping die and pressing core stroke limiting mechanism thereof

Abstract

The invention discloses a stamping die and a pressing core stroke limiting mechanism thereof. The pressing core stroke limiting mechanism comprises a limiting column. One end of the limiting column is fixedly connected to a pressing core through a first connection component, and the other end of the limiting column is fixedly connected with a limiting plate through a second connection component. The limiting column penetrates an upper die base axially and is provided with a limiting block. The limiting block slidably sleeves the limiting column axially. When the upper die base is away from a limitation position of the pressing core, the limiting block is adhered to the limiting plate. Compared with the prior art, the stamping die and the pressing core stroke limiting mechanism thereof have the advantages that during working, the surface of the limiting block is adhered to the surface of the limiting plate when the upper die base moves to the limitation position, and a bolt limiting mode is replaced by surface contact, so that limiting reliability, safety and stability are improved and impact force requirements are met.

Description

technical field [0001] The invention relates to the technical field of dies, in particular to a pressing core stroke limiting mechanism for stamping dies. The present invention also relates to a stamping die comprising the stroke limiting mechanism of the pressing core. Background technique [0002] The pressing device of the stamping die is usually set on the upper die base through a limit bolt or a side pin, and then installed on a large press for production. The safety of the die pressing and the travel limit device play an important role in stamping production. Due to safety Improper setting of the stroke limit device or failure to resist the impact of the impact force during the stamping process will lead to damage to the mold and even cause major safety accidents. [0003] At present, the limit of the movable parts (press core, support core, wedge slider, etc.) in the stamping die mainly has the following two forms: [0004] like figure 1 As shown, the movable parts...

AI Technical Summary

Problems solved by technology

[0004] like figure 1 As shown, the movable parts in the stamping die use the safety limit bolt 101 for safety limit. In this limit method, only the safety limit bolt 101 is used for the entire movable part, and the safety performance is poor. The thread of the bolt is stressed during the stamping process. Larger, it is easy to cause bolt breakage, and there is a rigid impact between the bolt and the moving parts, and the noise is louder

[0005] like figure 2 As shown, the movable parts in the stamping die use the side pin 102 for safety limit. This limit method has better safety performance, but it needs to process the limit groove on the movable part, the plane of the side pin fixing seat and the side pin hole, resulting in The processing cost is high, and there is also a rigid impact between the side pin 102 and the movable part, and the noise is also relatively large

Images