Template type pipe casting-containing stainless steel water pipe fixing structure

Abstract

The invention discloses a template type pipe casting-containing stainless steel water pipe fixing structure. The structure comprises a sand mold upper box, wherein a rail is arranged at the upper end of the sand mold upper box; slide blocks are arranged in the rail at intervals; a through hole is formed in the middle of each slide block; a connecting rod is connected into each through hole; one end of each connecting rod is connected in the through hole in the corresponding slide block through screw threads and extends into the upper part of the corresponding through hole; the lower end of each connecting rod is positioned at the bottom of the sand mold upper box; a screw hole is formed in the lower end of each connecting rod; a fixing screw with the diameter of 1mm binding wire penetrates through each screw hole; a clearance with the diameter of 3 to 5mm is formed between the end part of each fixing screw and the bottom end of the corresponding connecting rod; the fixing screw is used for connecting a stainless steel water pipe; a binding wire on each fixing screw is used for fixing the stainless steel water pipe; the fixed stainless steel water pipe is in a suspension state; the surrounding of the stainless steel water pipe is not in direction contact with the sand mold upper box and a clearance is reserved, otherwise, the cast steel pipe is exposed on the surface of a casting.

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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