Air exhausting device for mechanical casting die

Abstract

The invention discloses an exhaust device for a mechanical casting mold, which comprises a mold and an exhaust cover. The center of the upper end of the mold is communicated with a pouring port, and both sides of the upper end of the mold are symmetrically communicated with exhaust channels, and the exhaust The upper end of the channel is provided with an exhaust hood, the outer wall of the exhaust hood is fixedly connected with fixed blocks symmetrically on both sides, and the lower end of the fixed block is fixedly connected with a support rod, and the support rod is fixed on the upper end of the mold. A sealing plug is provided, and the upper end of the sealing plug is fixedly connected with a top cover. The end of the first telescopic rod extending into the exhaust passage is provided with a piston block, and the outer wall of the piston block is sleeved with two symmetrical sealing rings. A connecting shaft is provided at the end of the second telescopic rod extending inwardly through the top wall of the exhaust hood. The invention is simple in structure and easy to operate, can effectively dissipate heat and exhaust air during mechanical casting, ensures the integrity of the appearance of castings, and improves the quality and efficiency of products.

Description

technical field [0001] The invention relates to the technical field of mechanical casting, in particular to an exhaust device for a mechanical casting mold. Background technique [0002] At present, in the design of aluminum alloy casting metal molds, the molds generally use cavity-shaped vent plugs or exhaust rods for exhaust. When the cavity-type reticulated exhaust plug is used for exhaust, after the surface of the mold is sprayed with paint during the production process, the gaps are often blocked, which is not easy to clean, and the exhaust effect becomes poor; the cavity of the exhaust plug is thin, and it is easy to stick to aluminum and damage it. It is not easy to replace after the exhaust; when the exhaust rod is used for exhaust, the exhaust cross-sectional area is small, and the exhaust effect is poor, and in continuous pouring, once the exhaust gap is blocked, the exhaust device is not easy to disassemble, and the mold needs to be disassembled. In the casting p...

AI Technical Summary

Problems solved by technology

When the cavity-type reticulated exhaust plug is used for exhaust, after the surface of the mold is sprayed with paint during the production process, the gaps are often blocked, which is not easy to clean, and the exhaust effect becomes poor; the cavity of the exhaust plug is thin, and it is easy to stick to aluminum and damage it. It is not easy to replace after the exhaust; when the exhaust rod is used for exhaust, the exhaust cross-sectional area is small and the exhaust effect is poor, and in continuous pouring, once the exhaust gap is blocked, the exhaust device is not easy to disassemble, and the mold needs to be disassembled. In the casting production process, during the pouring process of high-temperature metal liquid, the gas generated by the high-temperature operation of the molding material and the air contained in the cavity space must be able to be excluded from the mold, otherwise, it will cause casting defects such as pores and oxidation. Thus causing certain troubles to the production enterprises

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