Injection molding bonding device and process for dual plastic materials

Abstract

The invention discloses an injection molding bonding device for dual plastic materials. The injection molding bonding device for the dual plastic materials comprises a movable mold plate, a first front mold core, a second front mold core and a rear mold core. A support is provided with sliding rails for controlling the movable mold plate to directionally slide in the transverse direction, the movable mold plate is provided with a cavity for containing the rear mold core and allowing the rear mold core to slide in a lifting mode, and the rear mold core is connected with lifting power parts. Themolding surface of the first front mold core is provided with a buckling position convex portion and / or a buckling position concave portion, after injection molding in the first front mold core, obtained first products form buckling portions for being in buckling connection with second products, the height or depth of the buckling portions is 2-5 mm, and the cross section of each buckling portionis conical. The second front mold core is provided with a one-way air inlet structure for feeding hot air. Bicolor injection molded parts have small form and location tolerance, the first portions and second portions of the products are connected through buckling portion structures, plastic bonding is conducted in a melting state, and thus the first portions and the second portions have high connecting strength, and the performance of finished products is good.

Description

technical field [0001] The invention relates to injection molding, in particular to an injection bonding device and process for double plastic materials. Background technique [0002] In the current production of plastic products, in order to maximize the aesthetics and practicability of the product, many products need to install two parts of different materials together to form two or more colors in one product or two or more colors in one product. Composed of one or more different materials. [0003] In the past, in order to achieve this effect, two single-color or two single-material products were usually injection-molded, and then the two products were assembled together to form a product with multiple colors or a combination of multiple materials. With the development of science and technology and the progress of production technology, in order to save the intermediate assembly process. The mold manufacturing industry invented the two-color mold. The characteristic o...

AI Technical Summary

Problems solved by technology

In many cases, due to the design of the functional characteristics of the product, the contact area between the two materials is relatively small, and the product produced after injection molding is easy to separate and crack, or the strength of the bond does not meet the expected effect, and the product size changes.

This will affect the performance of the product and cause the product to be unable to be used normally, resulting in a greatly reduced product qualification rate, and the functional test cannot pass

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