In-mold injection molding method and in-mold injection molding mold

Abstract

The invention discloses an in-mold injection molding method and an in-mold injection molding mold. The in-mold injection molding mold comprises a movable mold, a fixed mold, a female mold cavity arranged on the movable mold, and a male mold arranged on the fixed mold, wherein the fixed mold is also provided with a first slider and a second slider which moves forwards and backwards under the control of an oil cylinder; the first slider and the second slider are respectively fixedly connected at two ends of the male mold; and a part on the male mold, corresponding to the edge of the female mold cavity, is provided with a first knife edge along the periphery. The in-mold injection molding method comprises the following steps: a. carrying out thin film printing; b. feeding a film to the mold by a film feeding device; c. adsorbing the film into the female mold cavity of the mold in vacuum; d, carrying out mold closing; e, punching the thin film by using the first knife edge on the mold; and f, carrying out injection molding, cooling and mold opening, and taking out the product. By the in-mold injection molding method and the in-mold injection molding mold, the problem of the uniformity of the covered edge of an in-mold decoration product is solved, the aim of carrying out vacuum adsorption, punching and injection molding in one set of mold is realized, the production period is shortened greatly, and the production efficiency is improved.

Description

technical field [0001] The invention relates to an in-mold injection molding method and an in-mold injection molding mold. Background technique [0002] With the development of modern industrial products, industrial products have higher and higher demands on the appearance decoration of their products. The spraying technology and in-mold decoration technology of plastic products have developed rapidly. In-mold labeling technology, out-of-mold thermoforming, in-mold mosaic coating technology and in-mold transfer printing technology have been developed successively at home and abroad; Defects such as complicated process and poor hemming effect. Contents of the invention [0003] The object of the present invention is to provide an in-mold injection molding method and an in-mold injection molding mold. [0004] In order to solve the problems of the technologies described above, the technical solution of the present invention is: [0005] An in-mold injection molding mould,...

AI Technical Summary

Problems solved by technology

The spraying technology and in-mold decoration technology of plastic products have developed rapidly. In-mold labeling technology, out-of-mold thermoforming, in-mold mosaic coating technology and in-mold transfer printing technology have been developed successively at home and abroad; Defects such as complicated process and poor hemming effect

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