Die-casting die structure with combination of multiple angle pins and loose core for connecting pipes

Abstract

The invention discloses a die-casting die structure with a combination of multiple angle pins and a loose core for connecting pipes. The die-casting die comprises an upper die frame and a lower die frame which are assembled on a die-casting machine and can be matched in a folded manner, wherein the upper die frame and the lower die frame are respectively equipped with a lower die core and an upper die core which form a casting forming die after being folded; slide blocks running in a sliding manner are built in tail bracket units; angle pin holes are manufactured on the slide blocks; angle pins which bulge outwards are assembled on tail bracket driving units and can be matched with corresponding angle pin holes in an inserted and buckled manner; and after the slide blocks slide, front endbodies of the slide blocks are simultaneously embedded and inserted into connected outer edges of the upper and the lower die cores. By adopting a forming cavity structure with a combination of the multiple angle pins and the loose core to replace a sand core, the whole process of using the sand core during gravity casting is removed, and the market prospect is wide; and the die-casting die can bear the impact force of aluminum liquid and can be produced on a cold chamber die casting machine; the production efficiency is greatly improved, the production automaticity is promoted, the labor intensity is reduced, the cost is saved and the production period is shortened.

Description

technical field [0001] The invention relates to the technical field of die-casting molds, in particular to a die-casting die structure with connecting pipes and multiple oblique pin core-pulling combinations. Background technique [0002] At present, many auto parts valve bodies and air pipe connecting bracket products at home and abroad use one or more sand cores in the cavity and are produced by low-pressure gravity casting equipment; the mold is used to manufacture the connecting pipe parts of the internal circulation and energy saving system of the engine energy, and the parts have air holes on the surface , cleanliness, precision, sealing and mechanical strength requirements are high, and the internal microstructure of the product must be less than 100 μm. The low-pressure gravity casting currently used in foreign countries has low production efficiency, and it is necessary to solve the problems of surface pores, precision, mechanical strength and low production efficie...

AI Technical Summary

Problems solved by technology

The low-pressure gravity casting currently used in foreign countries has low production efficiency, and it is necessary to solve the problems of surface pores, precision, mechanical strength and low production efficiency of conventional low-pressure gravity casting.

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