Plastic injection molding device with controllable melt injection pressure

Abstract

The invention discloses a plastic injection molding device with controllable melt injection pressure, and relates to the technical field of plastic production. The plastic injection molding device comprises a base, wherein an injection molding cavity side plate is arranged on one side of the upper end of the base, a charging barrel is arranged on one side, close to the injection molding cavity side plate, of the upper end of the base, the outer side surface of the charging barrel is wrapped with a thermal insulating tube, and a pressure control mechanism is arranged on one side, close to a feed hopper, of the upper end of the charging barrel. According to the plastic injection molding device, the melt injection pressure is controlled and adjusted by the pressure control mechanism, real-time control for the melt injection pressure is realized, the problem of overhigh internal pressure of the device is solved, a circulating pipe and a heat release pipe are adopted to cooperate with a cooling liquid and a pressure transfer pump, so that heat can be recycled, the recycled heat is applied to the outer side of the charging barrel, the problem of temperature loss of melt in the charging barrel due to too low temperature of the outer side of the charging barrel is solved, heat recycling is realized, energy waste is reduced, and resources are saved.

Description

technical field [0001] The invention relates to the technical field of plastic production, in particular to a plastic injection molding device with controllable melt injection pressure. Background technique [0002] Plastic is a polymer compound made of monomer as raw material through addition polymerization or polycondensation reaction. It is composed of synthetic resin and fillers, plasticizers, stabilizers, lubricants, colorants and other additives. In the production process of plastic products A lot of equipment is needed, and the plastic injection molding device is an indispensable equipment in the plastic production process. The plastic injection molding device refers to the main molding equipment that uses plastic molding molds to make thermoplastic or thermosetting materials into plastic products of various shapes. , The plastic injection molding device needs to melt the plastic before injection molding, and then inject the melted melt into the injection mold through...

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Problems solved by technology

[0003] However, in the existing injection molding device, when the melt enters the barrel of the injection molding device, due to the large temperature difference between the outside temperature of the barrel and the internal temperature, when the melt enters the barrel, the temperature difference will cause the melt to melt. Temperature causes loss, which affects the injection molding effect, and after the melt is injected into the injection mold, the melt pressure control inside the barrel is not perfect, thus affecting the melt injection effect. Therefore, those skilled in the art provide a melt injection A plastic injection molding device with controllable pressure to solve the problems raised in the above-mentioned background technology

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