Low-pressure die for large new energy gearbox shell

Abstract

A low-pressure die for a large new energy gearbox shell comprises an upper die, a lower die, a core pulling device, an ejector rod and an ejector plate, and is characterized by further comprising a water cooling integrated system, the upper die and the lower die are movably connected through a guide column and a guide sleeve, the core pulling device is connected to the side face of the lower die, the ejector rod is arranged in the upper die and the lower die, and the ejector plate is arranged in the lower die. The ejector plate abuts against the upper end of the ejector rod and is movably connected to the upper die, the water-cooling integrated system comprises an integrated block, a quick connector and a water-cooling pipeline, the integrated block is arranged on the lower die, the water-cooling pipeline is arranged in the die, and the quick connector and the water-cooling pipeline are connected and integrated on the integrated block. According to the water cooling integrated system, the layout problem of a plurality of point cooling lines can be effectively solved, and production and management are facilitated; the core pulling device can effectively solve the problem that the pulling block is inconvenient to disassemble and assemble, the pulling block can be quickly slid in time, and production interruption is reduced.

Description

technical field [0001] The invention relates to the technical field of casting molds, in particular to a low-pressure mold for a large-scale new energy transmission case. Background technique [0002] Molds are various molds and tools used in industrial production for injection molding, blow molding, extrusion, die-casting or forging forming, smelting, stamping and other methods to obtain the required products. In the production process of automobile parts, because the parts of automobiles are relatively complicated, and many of them are integrated structures, molds are generally used for production and processing in the production process of such auto parts. For new energy gearbox housings, sand casting is commonly used in the market at present. The quality of sand and core sand in sand casting fluctuates greatly, which will lead to casting defects such as pores, sand holes, sticky sand, and slag inclusions. The mechanical properties of sand castings are about 20% lower th...

AI Technical Summary

Problems solved by technology

Existing metal mold casting generally adopts a single riser tube, which is not conducive to casting punching and sequential solidification

Existing metal mold casting water cooling generally adopts the method of processing pre-cast holes, which has poor cooling effect on some complex castings

The existing metal mold casting core-pulling disassembly structure is complicated, and it needs to be removed from the machine, which is not conducive to continuous production

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