A kind of rapid manufacturing method of resin casting mold
A technology of casting molds and manufacturing methods, which is applied in the direction of casting molding equipment, etc., can solve the problems of short service life of wooden molds, poor surface hardness and wear resistance of service performance, etc., and achieve long service life, low production cost, good performance
Inactive Publication Date: 2015-12-30
SHANDONG UNIV OF TECH
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AI Technical Summary
Problems solved by technology
[0002] At present, in the domestic casting production process, except for a few metal molds, most of the casting molds used for modeling are made of red pine or other materials by hand. The performance of casting molds made of wood materials ( Such as surface hardness and wear resistance, etc.) are not good, often due to the damage of the mold during use, etc., the service life of the wooden mold is not long
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0017] Embodiment 1, the specific steps of rapidly manufacturing the resin casting mold are as follows:
[0018] 1. Manufacture of sub-mold prototype: use the casting process diagram of the casting to draw the three-dimensional graphics of the casting mold, leave a machining allowance of 2mm for the outer dimension of the casting mold, compile the CNC machining program, and use polystyrene foam material in the CNC The prototype of the sub-mold for manufacturing the prototype of the resin casting mold is processed on the milling machine, and the prototype of the resin casting mold is made after the splicing of each sub-mold prototype.
[0019] 2. Manufacture of each part of the concave mold required for the manufacture of resin casting molds: brush a layer of 3mm thick mixture on the outer surface of each mold prototype prepared. The composition of the mixture is E44 type epoxy resin: modified polyamine Curing agent: dibutyl phthalate Toughening agent: graphite powder with a pa...
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Abstract
The invention provides a rapid manufacturing method for a resin casting mould. The rapid manufacturing method comprises the following steps: (1) using a polystyrene foam material to process branch mould prototypes for manufacturing a resin casting mould prototype on a numerically-controlled milling machine; (2) coating the outer surface of each branch mould prototype with a layer of mixture, and using a gypsum layer on the surface of the mixture of each branch mould prototype for fixing to obtain concave moulds of all moulds needed by manufacturing the resin casting mould; (3) processing the mixture layers cured on the concave moulds to the corresponding design size of each part of the resin mould through the numerically-controlled milling machine; (4) coating the inner surface of each concave mould with a layer of mixture, then coating the mixture with a layer of coating material, and removing the concave moulds after the mixture and the coating material are cured to obtain each branch resin mould of the resin casting mould; (5) assembling all the branch resin moulds obtained in the step (4) on a mould board, so that the complete resin casting mould is obtained. The method has the advantages of low manufacturing cost, short molding cycle and simple process, and the surface quality of the mould is high.
Description
technical field [0001] The invention relates to a rapid manufacturing method of a resin casting mold, which belongs to the technical field of casting. Background technique [0002] At present, in the domestic casting production process, except for a few metal molds, most of the casting molds used for modeling are made of red pine or other materials by hand. The performance of casting molds made of wood materials ( Such as surface hardness and wear resistance, etc.) are not good, and the service life of the wooden mold is often not long due to the damage of the mold during use. Compared with wooden casting molds, resin casting molds have a long service life and good surface finish, and are suitable for forming complex shapes. Compared with metal molds, their service life is close and the surface finish is good. The polystyrene foam material and the concave and convex molds for processing epoxy resin and graphite powder mixed layer materials, using resin mold manufacturing te...
Claims
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IPC IPC(8): B22C7/00
Inventor 张勇
Owner SHANDONG UNIV OF TECH