Piston gravity casting machine

Abstract

The invention relates to casting equipment, in particular to a piston gravity casting machine. One end of a tilting oil cylinder is hinged to a bed; the other end of the tilting oil cylinder is hinged to a working platform positioned on the bed; a material falling plate mechanism is mounted on the bed and is positioned at one side of the working platform; external mould mechanisms and edge block mechanisms are respectively positioned above and below the working platform; a lower core-pulling lifting mechanism is mounted at the lower surface of the working platform; a middle core block lifting mechanism is mounted on the lower core-pulling lifting mechanism and lifts along with the lower core-pulling lifting mechanism; an ejection mould and material falling mechanism is mounted on the working platform; ejection moulds in the ejection mould and material falling mechanism are positioned above external moulds and edge blocks; a casting mould of a piston consists of the ejection moulds, the external moulds, the edge blocks, middle core blocks, and front-rear middle core blocks; casting ports are formed in the external moulds; and casting-moulded materials move along with the ejection moulds, and fall on the material falling plate mechanism. According to the piston gravity casting machine, a series of operations such as mould opening, mould assembly, material moving and material falling in a piston manufacturing process can be realized, automation operation can be realized throughout, and the automation operation can be switched to manual operation.

Description

technical field [0001] The invention relates to casting equipment, in particular to a piston gravity casting machine. Background technique [0002] The piston is one of the most important parts of the engine, and the piston works under the conditions of high temperature, high pressure, high speed and poor lubrication. The outstanding advantages of aluminum alloys are low density and good heat dissipation. Therefore, high-strength aluminum alloys are generally used for pistons, but aluminum alloys are weaker than cast steel pistons in terms of mechanical strength, heat resistance, corrosion resistance, and wear resistance. Therefore, high-grade cast iron or heat-resistant steel is used on some low-speed diesel engines. [0003] The traditional piston casting process mostly adopts the manual core-pulling production method on the metal mold. The weight of the riser in this process is about 1 to 1.2 times the net weight of the casting, and the yield rate of the process is lowe...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a piston gravity casting machine, which solves the problems of backward technology, low production efficiency and unguaranteed product quality in the current piston manufacturing industry

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