Automatic extruding and compressing equipment for plastic product

Abstract

The invention relates to a piece of automatic extruding and compressing equipment for a plastic product. The equipment comprises a mold with a stockpiling cavity, an extruding device for injecting fillers into the stockpiling cavity, and a compressing device used for compressing the fillers in the stockpiling cavity to a mould cavity and pressurizing the stockpiling cavity in the cooling process of a mould; the stockpiling cavity is communicated with the mould cavity of the mould; and the size of the stockpiling cavity is larger than that of the mould cavity of the mould. The stockpiling cavity communicated with the mould cavity is arranged on the mould, the high-temperature fillers are injected into the stockpiling cavity by the extruding device first, then the mould is moved to the place below the compressing device, by continuously pressurizing the stockpiling cavity by the compressing device, the fillers in the stockpiling cavity can continuously supplement the fillers into the mould cavity in the cooling process of the mould so as to fill the gap generated when the fillers contract in the mould cavity, in this way, the formed product can meet the design requirements, the product percent of pass as well as the forming efficiency of the plastic product are improved, and meanwhile, the workload for design and manufacture of the mould can also be simplified.

Description

【Technical field】 [0001] The invention relates to mold manufacturing technology, and more specifically, relates to an automatic extruding and compressing equipment for plastic products. 【Background technique】 [0002] Plastic products are usually obtained through injection molding process. Specifically, the injection device is usually used to inject material into the cavity of the mold through the gate and runner at a temperature of about 400 ° C. After the injection is completed, the gate is closed. Cool the mold to below 60°C and demould. Since the internal filler will shrink to a certain extent during the cooling process of the mold, the overall volume of the filler will become smaller, resulting in a smaller size of the molded product; for complex mold cavities or mold cavities with thicker cavities, it is easier to produce size The problem of shrinkage is even prone to shrinkage, which greatly reduces the product qualification rate. [0003] In the prior art, there is...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an automatic extruding and compressing equipment for plastic products, which can continuously feed the Filling in the mold cavity to overcome the problem of size reduction caused by filler shrinkage

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