Vacuum die-casting equipment for spiral compression disc of air conditioner compressor and working method

Abstract

The invention relates to vacuum die-casting equipment for a spiral compression disc of an air conditioner compressor and a working method. The vacuum die-casting equipment for the spiral compression disc of the air conditioner compressor is characterized by comprising a die-casting die, a feeding pipeline arranged on the die-casting die and communicating with a die cavity, and a die air exhaust pipeline arranged on the die-casting die and communicating with the die cavity, wherein a material pipe air exhaust pipeline is connected beside the feeding pipeline; an injection head for pushing casting liquid into the die cavity is arranged in the feeding pipeline; and the die air exhaust pipeline and the material pipe air exhaust pipeline communicate with a vacuum pump to suck air in the die cavity and the feeding pipeline. According to the vacuum die-casting equipment, the phenomenon of air holes in a common die-casting part is overcome through vacuum die-casting forming, the yield of products is increased, the subsequent machining time is shortened, and the production efficiency is improved.

Description

Technical field: [0001] The invention relates to vacuum die-casting equipment and a working method for a spiral compression plate of an air-conditioning compressor. Background technique: [0002] Aluminum alloy air conditioner compressor screw compression disc is the key part of the new air conditioner. The compression part is composed of a moving screw disc and a fixed screw disc. This kind of compressor does not have the up and down movement of the piston when it is running, only the rotating motion of the moving disc and the fixed disc. The structure is novel and precise, and has the advantages of small size, low noise, light weight, small vibration, low energy consumption, long life, continuous and stable operation, and reliable operation. It is known as the "New Revolutionary Compressor". [0003] However, there are many key technical problems that need to be solved in the mass production of screw air-conditioning compressors to ensure stable mass production quality; es...

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Problems solved by technology

[0004] In the prior art, the low-pressure pouring method or the overall cutting method is generally used to manufacture the moving and fixed plates, but its disadvantages are that the air is easily involved when the molten metal is injected into the cavity of the mold, and the molten metal is insufficiently poured. These defects easily lead to spiral There are casting defects in the aluminum alloy moving and fixed screw disks of air-conditioning compressors, which affect the quality of the compressor, and the overall cutting method is used to manufacture the moving and fixed disks, which consumes materials and many man-hours, resulting in high product prices and affecting sales.

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