Air entrapment prevention leak-proof material tube assembly of cold chamber die-casting machine

Abstract

An air entrapment prevention leak-proof material tube assembly of a cold chamber die-casting machine is used in cooperation with the die-casting machine. The air entrapment prevention leak-proof material tube assembly comprises a press injection and air entrapment prevention leak-proof material tube device. The air entrapment prevention leak-proof material tube device is mounted in a piston cylinder through a piston with a push rod. The piston cylinder is fixed to a material tube. The piston is matched with a feed port of the material tube. The piston is mounted on a machine body, and an angle of inclination is formed between the piston and a machine base at the horizontal position. After the material tube is fed, hydraulic oil in an oil cylinder pressurizes the piston in the piston cylinder to make the piston move downwards till the piston blocks the feed port of the material tube. As a result, leakage of aluminum alloy liquid is prevented, and the material tube is changed to a closed state from an open state. The aluminum alloy liquid is injected in a pressed mode under the sealed condition, and a plunger head is relatively stable when pushing the aluminum alloy liquid, so that air entrapment caused by wavy advancing of molten aluminum is avoided. Air stored in the material tube is reduced for multiple times, and the probability of air entrapment is lowered by 90-95%. The air entrapment prevention leak-proof material tube assembly guarantees that products die-cast by the die-casting machine are high in quality, high in density, low in porosity and high in tensile strength, lowers the rejection rate, increases the percent of pass and improves work efficiency.

Description

Technical field [0001] The invention relates to an important part of a mechanical die-casting equipment, in particular to an anti-winding and anti-leakage material pipe assembly of a cold chamber die-casting machine. Background technique [0002] The patent number CN201220262103.1 "Material tube of die casting machine" provides a U-shaped cooling fluid channel connected to the cooling fluid storage tank in the side wall opposite to the inlet of the material tube to reduce the temperature in this area. , Improve the quality of pressed products and extend the service life of the barrel and punch. [0003] The patent application number CN201210362377.2 "a die-casting machine material tube" discloses a ring oil groove filled with lubricant on the inner wall of the adjacent material tube inlet to provide full-peripheral lubrication for the reciprocating movement of the piston to avoid It also protects the material pipe and piston from wear and improves the quality of die castings. [00...

AI Technical Summary

Problems solved by technology

When the plunger head pushes the aluminum hydraulic injection forward, the aluminum liquid will also overflow. The larger the inclination angle is, the more aluminum alloy liquid will overflow from the feeding port of the material tube, which will affect the injection work and product quality. Causes a great waste of materials, making the die-casting machine unable to work normally

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