A vent block structure with adjustable gap and die-casting mold containing it

Abstract

The invention discloses an exhaust block structure with adjustable gap and a die-casting mold including the same, belonging to the technical field of die-casting molds. Correspondingly, a movable exhaust block is arranged, and a pre-top elastic member is arranged corresponding to the movable exhaust block, and the combined setting of each component can realize the automatic adjustment of the exhaust gap when the exhaust block structure works. The venting block structure with adjustable gap of the present invention has simple structure and simple setting, and can adjust the size of venting gap correspondingly according to the pressure in the cavity and the amount of materials in different positions in the venting gap, so as to ensure the discharge of mold material. At the same time, it can effectively avoid the occurrence of flying material in the die-casting mold, improve the compatibility and reliability of the die-casting mold, and improve the quality of the die-casting molding, which has a good application prospect and promotion value.

Description

technical field [0001] The invention belongs to the technical field of die-casting molds, and in particular relates to a venting block structure with adjustable clearance and a die-casting mold containing the same. Background technique [0002] In the manufacturing process of auto parts, die casting is a widely used molding technology. In the die-casting process, the die-casting mold is an indispensable structure. Usually, die-casting molds mainly include molding parts, mold bases, part guides, push-out mechanisms, pouring systems, rejection systems, core-pulling mechanisms, cooling systems and other components. [0003] Among them, the rejection system is used as a part of the precision casting mold. When the die-casting mold is closed and ready for the next injection, the pressure chamber, gating system, cavity and exhaust system are all filled with air. When the molten metal enters the mold cavity from the gating system under the action of pressure, the molten metal re...

AI Technical Summary

Problems solved by technology

The disadvantage of this kind of valve is that it is a mechanical system, which will fail periodically, requires frequent maintenance and overhaul, and the reliability of the mechanical device is relatively low. These unfavorable factors limit the exhaust block with valve to a large extent. usage of

Correspondingly, most of the exhaust block structures without valves are exhausted through exhaust grooves formed by a concave-convex structure similar to a "washing board". Although this structure is easy to set up and has high reliability; however, the above The form not only has low matching accuracy, but also requires different matching clearances for different molds, and the exhaust results brought about by different production process conditions are also different.

Therefore, the exhaust block assembly without valves often has the risk of unsatisfactory exhaust effect (too small gap) or flying material (too large exhaust gap), which affects the molding quality of die castings to a certain extent and restricts the quality of die casting. Application of molding process

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