Vacuum pumping buffer structure for die-casting mold

Abstract

The invention relates to a vacuum pumping buffer structure for a die-casting mold. The vacuum pumping buffer structure for the die-casting mold comprises an upper buffer block and a lower buffer block, wherein the upper buffer block and the lower buffer block are installed in up-down stacking mode, a plurality of buffer grooves are formed in a fitting face of each of the upper buffer block and the lower buffer block, the quantity of the buffer grooves in the upper buffer block is one more than the quantity of the buffer grooves in the lower buffer block, the buffer grooves in the upper buffer block and the buffer grooves in the lower buffer block are arranged in stagger mode, and a buffer bulge with an epsilon-shaped section is formed in the middle of each buffer groove. The vacuum pumping buffer structure for the die-casting mold has the characteristics of taking both air exhausting amount and buffer effect into account, substantially reducing mold cost, guaranteeing production stability of the die-casting mold, improving production efficiency, ensuring product quality and the like.

Description

technical field [0001] The invention relates to the technical field of vacuuming a die-casting mold, in particular to a vacuum buffering structure for a die-casting mold. Background technique [0002] The die-casting mold with a vacuum structure can greatly improve the qualified rate of the product, and through the vacuum operation, the filling speed of the aluminum liquid can be increased, thereby reducing the molding time of the product and protecting the life of the mold. [0003] Usually, the cross-sectional area of ​​the slag flow channel with vacuum is designed to be slightly larger. If there is no design buffer, this will cause the problem that the aluminum liquid directly enters the vacuum valve. In order to solve this problem, usually choose such as figure 2 The same structure is similar to the fast exhaust. When the structure is vacuumed, due to the small cross-sectional area of ​​the buffer flow channel, it is easy to cause the aluminum liquid to rush directly int...

AI Technical Summary

Problems solved by technology

[0003] Usually, the cross-sectional area of ​​the slag flow channel with vacuum is designed to be slightly larger. If there is no design buffer, this will cause the problem that the aluminum liquid directly enters the vacuum valve. In order to solve this problem, usually choose such as figure 2 The same structure is similar to the fast exhaust. When the structure is vacuumed, due to the small cross-sectional area of ​​the buffer flow channel, it is easy to cause the aluminum liquid to rush directly into the vacuum valve at high speed, so that the vacuum valve is blocked by the aluminum liquid. Mold cannot be produced normally, affecting production efficiency

Images