Exhaust block structure preventing injection of die casting liquid

Abstract

The invention relates to the field of die casting, in particular to an exhaust block structure preventing injection of die casting liquid. The exhaust block structure comprises an upper exhaust blockand a lower exhaust block which are matched with each other. The upper exhaust block is a female die, and the lower exhaust block is a male die. A concave quasi-sinusoidal upper exhaust block exhaustpassage is formed in the middle of the upper exhaust block in the extending direction. A convex lower exhaust block exhaust passage matched with the upper exhaust block exhaust passage is formed in the middle portion of the lower exhaust block in the extending direction. Positioning protrusions are arranged on the parts, on the two sides of the upper exhaust block exhaust passage, of the upper exhaust block. Positioning depressions matched with the positioning protrusions are arranged on the parts, on the two sides of the lower exhaust block exhaust passage, of the lower exhaust block. Limiting grooves are formed in the positions, at the ends of the upper exhaust block exhaust passage, of the upper exhaust block. Limiting protrusions matched with the limiting grooves, are formed in the positions, at the ends of the lower exhaust block exhaust passage, of the lower exhaust block. The exhaust block structure provided by the invention is simple in structure and accurate in positioning andcan prevent injection of the die casting liquid.

Description

technical field [0001] The invention relates to the field of die-casting, in particular to an exhaust block structure for preventing the injection of die-casting liquid. Background technique [0002] When the die-casting machine is die-casting, the die-casting liquid passes through the main channel, cross-runner, gate, mold cavity, slag bag and exhaust block in sequence, and finally completes the entire injection process of the die-casting liquid. The main function of the exhaust block is to discharge the air holes in the mold cavity, so that the molten die-casting liquid loses heat quickly and solidifies here, ensuring that the gas can be discharged quickly and the die-casting liquid will not splash out of the mold. Although the exhaust block at the present stage can generally guarantee the exhaust capacity of the mold to a large extent, during the injection process, due to the inaccurate positioning, the upper and lower exhaust blocks are prone to misalignment, resulting i...

AI Technical Summary

Problems solved by technology

Although the exhaust block at the present stage can generally guarantee the exhaust capacity of the mold to a large extent, during the injection process, due to the inaccurate positioning, the upper and lower exhaust blocks are prone to misalignment, resulting in a large gap on one side and a large gap on the other. The die-casting liquid on the small and large side may not have time to cool and solidify, causing the die-casting liquid to spray out of the mold, and the small side will hinder the discharge of gas

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