Mould plate type pipe-containing casting dedicated sandbox upper box fixing tool

Abstract

A mould plate type pipe-containing casting dedicated sandbox upper box fixing tool comprises a tool connection rod and a slide block that cooperates with the tool connection rod, the slide block is provided with a connection screw hole, one end of the tool connection rod is connected to the connection screw hole through thread connection, the upper end of the tool connection rod stretches out of the connection screw hole, the lower end of the tool connection rod is provided with an inner screw thread, the side surfaces of the slide block are provided with card slots, which cooperate with the track arranged on the upper box. The provided fixing tool can guarantee the firm connection between the water pipe and the sandbox, and basically eliminates the stress deformation caused by the heat absorbed by the stainless steel pipe, form and location tolerance of the water pipe is guaranteed, and at the same time the sand mould will not collapse. The yield of the mould plate type pipe-containing casting is increased, moreover, the connection rod is painted with heat-diffusive paint, the problem of heat dissipation of the connection rod is solved, and the tool service life is prolonged.

Description

technical field [0001] The invention relates to the field of casting technology, in particular to a sand box device for fixing pre-embedded stainless steel pipes in the molded slab sand mold, and is especially suitable for the production of aluminum alloy household appliance molds containing the pipe-containing slab. Background technique [0002] The casting process of the existing household appliance mold billets is a green sand molding process; the household appliance molds are roughly divided into box type and type plate type, which are characterized by single casting, small batch size, large outline, external surface needs machining, and inner cavity In order not to process the surface; in the process of use, the mold needs to be heated by circulating water, which requires a heating pipe in the mold. There are currently two ways to place the heating pipe. One is that after the billet is formed, the casting Process the water pipe groove in the inner cavity of the blank, t...

AI Technical Summary

Problems solved by technology

[0002] The casting process of the existing household appliance mold billets is a green sand molding process; the household appliance molds are roughly divided into box type and type plate type, which are characterized by single casting, small batch size, large outline, external surface needs to be machined, and inner cavity In order not to process the surface; in the process of use, the mold needs to be heated by circulating water, which requires a heating pipe in the mold. There are currently two ways to place the heating pipe. One is that after the billet is formed, the casting Process the water pipe groove in the inner cavity of the billet, then put the water pipe into the groove, and then seal the pipe groove with a low-melting point alloy; It is laborious and costly, and the dimensional accuracy of the bent stainless steel pipe is high, otherwise it is not easy to put it into the processed pipe groove

The reason why copper tubes are used in this process is that copper tubes have little thermal deformation during casting and are easy to fix, but the disadvantages are that the cost of copper tubes is high, and the melting point of copper is low. When pouring, the copper tubes will be heated and softened or even cracked If the stainless steel water pipe is used, the stress deformation after heating is particularly large during the casting process, which is easy to cause displacement or deformation of the water pipe. Since the casting process is a wet sand molding process, the strength of the sand mold is poor. After the water pipe is deformed, the sand box Can cause damage and even collapse the box, resulting in the scrapping of the slab

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