Quick manufacturing method of resin casting mold based on SLS (selective laser sintering) resin sand mold

Abstract

The invention provides a quick manufacturing method of a resin casting mold based on an SLS (selective laser sintering) resin sand mold. The quick manufacturing method is characterized by comprising the steps of (1) drawing a three-dimensional graph of a concave mold for manufacturing the resin casting mold through a computer according to a casting technical drawing of a casting, and manufacturing the concave mold made from resin sand through SLS quick forming equipment; (2) uniformly coating the inner surface of the concave mold with emulsion paint, and after the paint is dried, polishing and flattening the inner surface of the concave mold through sand paper; and (3) manually coating the inner surface of the concave mold with a surface resin layer with the thickness of 2mm-3mm, then manually coating the inner surface of the concave mold with a back resin layer with the thickness of 20mm-30mm, and after the two resin layers are solidified, removing the concave mold to obtain the resin casting mold. According to the quick manufacturing method disclosed by the invention, the three-dimensional graph of the concave mold for manufacturing the resin casting mold is drawn through the computer, so that the design and modification are facilitated; the SLS quick forming equipment can be used for manufacturing the high-precision concave mold made from resin sand, and the manufacturing period is short.

Description

technical field [0001] The invention provides a rapid manufacturing method of a resin casting mold based on an SLS resin sand mold, which belongs to the technical field of material processing engineering. Background technique [0002] Traditional casting mold manufacturing methods can be roughly divided into two types, one is to manufacture wooden molds, using woodworking techniques to manufacture casting molds; the other is to use metal blanks, using CNC machining, EDM, turning, milling, Planing, grinding, drilling, wire cutting and other methods to manufacture casting molds. In order to design and manufacture a set of qualified moulds, repeated operations from design, processing to mold correction are required. Therefore, the traditional mold manufacturing process is complicated, the production cycle is long, the cost is high, and the accuracy is not easy to guarantee, sometimes even causing The waste of molds and materials, so the traditional mold manufacturing method ha...

AI Technical Summary

Problems solved by technology

In order to design and manufacture a set of qualified moulds, repeated operations from design, processing to mold correction are required. Therefore, the traditional mold manufacturing process is complicated, the production cycle is long, the cost is high, and the accuracy is not easy to guarantee, sometimes even causing The waste of molds and materials, so the traditional mold manufacturing method has some inherent shortcomings, such as high manufacturing cost, short mold life, long production cycle, difficult product improvement, etc.