Thin-wall part die-casting mould

Abstract

The invention relates to the field of die-casting moulds, in particular to a thin-wall part die-casting mould. The thin-wall part die-casting mould comprises a base, a fixed mould assembly, a movablemould assembly, a plurality of limiting assemblies, an ejecting-out assembly, a cooling assembly, a filling assembly and a gas-exhausting assembly, wherein the fixed mould assembly and the movable mould assembly are oppositely arranged at the upper end of the base; the ejecting-out assembly is arranged on the fixed mould assembly and is fixedly connected to the movable mould assembly; the coolingassembly is arranged inside the fixed mould assembly; and the filling assembly and the gas-exhausting assembly are separately mounted at the lower end and the upper end of the fixed mould assembly. The limiting assemblies and the ejecting-out assembly are arranged, so that mould stripping work is accomplished while mould opening is accomplished, and therefore, die-casting processing time is shortened, and production efficiency is improved; and the filling assembly and the gas-exhausting assembly are arranged, so that on one hand, molten metal in a filling pipeline is prevented from continuously entering a mould cavity, on the other hand, the molten metal in a mould cavity is prevented from flowing back into the filling pipeline to cause influences on forming of products.

Description

technical field [0001] The invention relates to the field of die-casting molds, in particular to a die-casting mold for thin-walled parts. Background technique [0002] Die-casting mold is a liquid forging method. Its basic process is as follows: molten metal is first filled into the cavity of the mold by low-speed or high-speed casting. The mold has a movable cavity surface, which is pressurized as the molten metal cools. Forging not only eliminates the shrinkage cavity and porosity defects of the blank, but also makes the internal structure of the blank reach the broken grains of the forged state. The comprehensive mechanical properties of the blank are significantly improved. [0003] Chinese Patent No. CN105945255B discloses a thin-wall die-casting mold and die-casting equipment, which belongs to the field of die-casting and is used for producing die-castings. The die-casting mold of the present invention includes an outer gate and a runner connected with the outer gat...

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Problems solved by technology

[0004] However, the above-mentioned patents also have the following technical problems in use, first; due to the existence of the vent hole and the runner, the molten metal will enter the vent hole and the runner during the die-casting process, resulting in two defects in the formed product. There will be redundancy at the end, which will not only affect product quality, but also affect product release

Second; when the above-mentioned patent is in use, when the mold is released, the mold needs to be opened first, and then the mold is released through the mold release device, which not only has a complicated structure, but also affects the efficiency of the mold release. In addition, when the mold is opened, the product is easy to stick Attached to the upper mold, it needs to be fixed by core pulling, which further affects the efficiency of mold release and reduces the production speed

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