Multi-injection-unit co-molding equipment and method for large complex plastic product

Abstract

The invention provides a multi-injection-unit co-molding method and equipment for a large complex plastic product. The method is characterized by simultaneous production of a same article by a plurality of independent units that perform different functions. The equipment comprises an independent injection unit and a co-plastic mold closing unit. The co-molding mold closing unit further comprises a mold closing device, a mold locking device and a whole movement driving device. The independent injection unit and the co-plastic mold closing unit are modularized independent equipment. The equipment has the beneficial effects that (1) the independent injection units can be flexibly arranged according to the requirements of injection angles and injection positions, simultaneous injection of large complex plastic products is realized, the molding period of the large plastic products is effectively shortened, and the yield of the products is improved; (2) the independent co-plastic mold closing unit can independently realize the functions of mold opening, mold closing, mold locking and mold plate whole movement driving, so that the site limitation of large-scale complex plastic product injection molding equipment is eliminated, and the design production of the large-scale complex plastic product injection molding equipment is simplified.

Description

Technical field [0001] The present invention relates to a multi-injection unit co-plastic molding method and equipment for large complex plastic articles, belonging to the field of polymer material processing machinery. Background technique [0002] With the development of social economy, plastic products are increasing and widely used in all areas, from small plastic products such as the common milk tea cup, fast food boxes, gradually towards the drainage pipelines, septic tanks and other large complex plastic products. [0003] In an existing injection molding process, solutions to large complex plastic products are generally produced using large and even super large injection molding machines and double-cavity molds or superposed molds, and such programs are inadequate, such as using double cavity molds. Compared with the single cavity mold, the amount of injection is increased, and while increasing the amount of injection, it is difficult to maintain the injection balance bet...

AI Technical Summary

Problems solved by technology

[0003] In the existing injection molding process, the solutions for large and complex plastic products generally use large or even super large injection molding machines and double-cavity molds or superimposed molds for production, but this type of solution has technical deficiencies, such as the use of double-cavity molds Compared with the single-cavity mold, the injection volume should be increased, and while increasing the injection volume, it is difficult to maintain the injection balance between multiple cavities; the use of superimposed molds will result in increased mold opening strokes, resulting in longer processing cycles

[0004] In summary, the process of large and complex plastic products is difficult, the injection volume of plastic melt is large, the structure of the cavity is complex, and the characteristics of the plastic melt itself lead to long product molding cycle time and low yield

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