Stretchable punch pin mechanism for thermal stamping die

Abstract

The invention relates to a retractable punch mechanism of a hot stamping die, which is characterized in that it includes a punch sleeve, a spring sleeve, a punch, an impact block, a spring, a guide sleeve, and a base fixing block, and the front end of the punch sleeve is the same as The shaft is fixed to the spring sleeve, the punch is coaxially installed in the punch sleeve and the spring sleeve, the impact block is fixed at the front end of the punch, the rear end of the impact block is located in the spring sleeve, and the front end of the impact block extends out of the spring sleeve Outside the cylinder, a spring is coaxially set between the punch and the spring sleeve, a guide sleeve is installed between the punch and the punch sleeve, and a base fixing block is symmetrically fixed on the side wall at the bottom end of the punch sleeve. The structure design of the invention is scientific and reasonable, the punch has scalability, the position is easy to adjust, the stability and safety of the stamping process can be ensured, and the waste of materials can be avoided from mold damage.

Description

technical field [0001] The invention relates to the technical field of manufacturing automobile stamping dies, in particular to a retractable punch mechanism of a hot stamping die. Background technique [0002] At present, when automobile panels are formed using thermoforming molds, they will encounter the process of punching small holes, and the requirements for punches are relatively high at this time. First of all, due to the relatively high temperature of hot stamping, punches generally require materials with better mechanical properties and expensive coatings. Secondly, the safety and durability of punches have also become the main factors to be considered. The general cold stamping punch mechanism is not suitable for hot stamping punching. The reason is that the punch of the traditional cold stamping mechanism is relatively long and cannot be automatically retracted. When the mold is closed, the force applied to the punch is relatively large, and the punch is prone t...

AI Technical Summary

Problems solved by technology

The reason is that the punch of the traditional cold stamping mechanism is relatively long and cannot be automatically retracted. When the mold is closed, the force applied to the punch is relatively large, and the punch is prone to breakage and other damage.

And because the punch is generally installed on the upper die, the disassembly and assembly of the punch mechanism is not very convenient. If the die is damaged, it will take a long time to replace it, which will affect the continuity and efficiency of work, and cause waste of die materials and economic losses.

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