Gap-adjustable exhaust block structure and die-casting die comprising same

Abstract

The invention discloses a gap-adjustable exhaust block structure and a die-casting die comprising the same, and belongs to the technical field of die-casting dies. A containing groove and a notch are formed in a first exhaust block, a movable exhaust block is correspondingly arranged in the containing groove, a pre-jacking elastic piece is arranged corresponding to the movable exhaust block, and by using combination setting of parts, an exhaust gap can be automatically adjusted when the exhaust block structure works. According to the gap-adjustable exhaust block structure, the structure is simple, arrangement is easy and convenient, the size of the exhaust gap can be correspondingly adjusted according to the pressure in a cavity and the quantity of materials at different positions in the exhaust gap, the material discharging and exhausting smoothness of the die is guaranteed, meanwhile, the material flying situation of the die-casting die is effectively avoided, compatibility and reliability of the die-casting die are improved, die-casting forming quality is improved, and the gap-adjustable exhaust block structure has good application prospects and popularization value.

Description

technical field [0001] The invention belongs to the technical field of die-casting molds, and in particular relates to an exhaust block structure with adjustable clearance and a die-casting mold comprising 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, the die-casting mold mainly includes the forming part, the mold base, the part guide, the push-out mechanism, the pouring system, the rejection system, the core-pulling mechanism, the cooling system 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 for the next shot, the pressure chamber, gating system, cavity and exhaust system are filled with air. When the molten metal enters the cavity from the gating system under the action of pressure, the molten met...

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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