A quick-change punch mechanism

Abstract

The invention discloses a punch fast replacement mechanism which comprises an upper mold and a lower mold. The upper mold is provided with a base plate, a clamping plate and a stripper pad. The clamping plate is fixedly arranged under the base plate. The stripper pad is arranged under the clamping plate in an openable mode. The clamping plate is of a hollow structure. A clamping plate insert is arranged in the clamping plate. The clamping plate insert, the clamping plate and the stripper pad are sequentially provided with through holes allowing a punch to penetrate through. The punch sequentially penetrates through the clamping plate insert, the clamping plate and the stripper pad. A punch plug pin is arranged on the punch. The punch is detachably sleeved with a buffer assembly used for protecting the punch. The punch, the clamping plate insert and the punch plug pin are of an integrated structure. In the open state, the punch, the clamping plate insert and the punch plug pin make movement in the vertical direction. By the adoption of the punch fast replacement mechanism, the purpose of arranging gaskets on the punch or removing the gaskets from the punch can be achieved rapidly; and compared with an existing structure, the maintenance time of the punch is greatly shortened, the production efficiency is improved, and the gaskets are firm and reliable.

Description

technical field [0001] The invention relates to the field of mechanical manufacturing, in particular to a quick-change punch mechanism. Background technique [0002] The punch is a metal part on the stamping die in a mechanical tool, also called a punching rod, a punching needle or a punch. It is installed on a stamping die for continuous punching and punching, so that the processed material is separated or plastically deformed. In order to obtain the required finished or semi-finished products. Die punches generally use high-speed steel and tungsten steel as materials, such as high-speed steel punches and tungsten steel punches, etc., and high-speed steel is the most commonly used material, commonly used are CR12, CR12MOV, asp23, skd11, skd51, skd61, etc. , Tungsten steel is generally used in punching and shearing dies with higher requirements. In the process of use, the punch is easy to wear due to long-term contact with the material, so the cleaning and maintenance of t...

AI Technical Summary

Problems solved by technology

like figure 1 Shown is the existing punch structure, 100 is the gasket, 200 is the punch, the gasket 100 is welded on the punch 200, the maintenance of the punch takes a long time, the gasket needs to be welded after maintenance, the maintenance takes a long time, and the gasket is easy Falling off, suitable for punches with a relatively large area, and punches with a small area are inconvenient to use, causing the punch parts to be easily damaged

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