Molding method of double-density product

Abstract

The invention discloses a molding method of a double-density product, which is implemented through a molding die of the double-density product and comprises the following steps: A, after a moving mold and a fixing mold are closed, respectively inserting two moving mold spiles into a cavity and dividing the cavity into three different parts; B, respectively injecting the fused high density raw materials and low density raw materials into different parts of the cavity; C, retreating the moving mold spile out of the cavity and retaining on the moving mold; D, inserting the fixing mold spile intothe fixing mold again; E, introducing steam into a moving mold chamber and a fixing mold steam chamber, and curing the raw materials in the cavity and enabling the raw materials to form enthalpy; andF, after the formation of the enthalpy, introducing cooling water into a fixing mold cooling water pipe to cool the cavity, then finishing the molding of a product. The molding method of the double-density product can mold two different raw materials into a product with two different densities at a time, thereby saving half of the manufacturing cycle, improving the capacity, saving the manufacturing cost, increasing the product intensity and ensuring the stability of the quality.

Description

technical field [0001] The invention relates to a mold, in particular to a molding method of a double-density product. Background technique [0002] At present, for PP-E, PS-E, PE-E and other double density foam materials. Generally, two moldings are used, and the molding methods include the following two types: [0003] The first is to make two parts of two materials with different densities, and then glue the two parts together. [0004] The second is to mold the product of one density material and put it back in the cavity, and then mold the material of another density, so that the two parts are glued together by steam heating. [0005] Both methods double the production cycle because of two moldings. The first method also increases the cost of glue and the operating cost of lamination. It is difficult to ensure that the laminated product conforms to the digital model during manual work; the second In the first method, when a material with one density is molded in anot...

AI Technical Summary

Problems solved by technology

[0005] Both methods double the production cycle because of two moldings. The first method also increases the cost of glue and the operating cost of lamination. It is difficult to ensure that the laminated product conforms to the digital model during manual work; the second In this method, when a material with one density is formed in another density material, it will be heated by steam again, and the surface is easily burnt.

In addition, when forming the second density material, the first density material formed first must be manually placed in the cavity, so the equipment cannot be fully automatic.

Manufacturing costs are higher than the first method

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