Stretchable punch pin mechanism for thermal stamping die

Abstract

The invention relates to a stretchable punch pin mechanism for a thermal stamping die. The mechanism is characterized by comprising a punch pin sleeve, a spring sleeve, a punch pin, an impact block, a spring, a guide sleeve and base fixing blocks, wherein the spring sleeve is coaxially and fixedly mounted at the front end of the punch pin sleeve, the punch pin is coaxially mounted in the punch pin sleeve and the spring sleeve, the impact block is fixedly mounted at the front end of the punch pin, the rear end of the impact block is located in the spring sleeve, the front end of the impact block extends out of the spring sleeve, the spring coaxially sleeves between the punch pin and the spring sleeve, the guide sleeve is mounted between the punch pin and the punch pin sleeve, and the base fixing blocks are symmetrically and fixedly mounted on the side wall of the bottom end of the punch pin sleeve. The mechanism provided by the invention is scientific and reasonable in structural design, the punch pin is stretchable, the position is easy to adjust, the stability and safety in a punching process can be guaranteed, and materials are not wasted because a mould is prevented from being damaged.

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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