All-electric micro precise injection moulding machine

Abstract

The invention discloses an all-electric micro precise injection moulding machine, which belongs to the field of high molecular material forming mechanism. The micro precise injection moulding machine mainly consists of an end-face plasticizing part, a plunger injection part, a mold-closing part, a mold and a machine frame. The all-electric micro precise injection moulding machine of the invention adopts the side feeding way; a plunger, a machine cylinder and a hot runner nozzle are arranged on one line; and a check valve is assembled; the injection resistance is low and the pressure loss is less; the end-face spiral disc plasticizing materials are used, so that the problems, such as difficult processing, low intensity and the like, of the traditional small-sized screws are solved basically; a servo motor is used to drive a ball screw pair to inject the plunger and open and close the mold, so that the accurate control of action positions and stepless speed regulation can be realized. The all-electric micro precise injection moulding machine disclosed by the invention combines the advantages of traditional micro injection forming technology, the end-face pre-plastication technology, the hot runner technology and the electric servo driving technology, and has the advantages of well plasticizing and mixed melting effects, high material utilization rate, less pressure loss and relatively simple structure.

Description

technical field [0001] The invention relates to a miniature precision injection molding machine, which belongs to the field of mechanical engineering for molding and processing polymer materials. Background technique [0002] Micro-injection molding technology is an important branch of MEMS. Micro-injection molding machine has become one of the main equipments of the world's manufacturing industry with the advantages of easy realization of low-cost mass production of precision micro-structure parts. Its main technological actions include mold closing, injection, pressure holding, cooling (simultaneous plasticizing and metering), mold opening and product demoulding. [0003] Unlike traditional injection molding machines, micro-injection molding machines require high injection rates, precise injection volume metering and quick response capabilities. First, the high surface area / volume ratio of the product requires that the cooling of the product must occur in a very short ti...

AI Technical Summary

Problems solved by technology

Screw-type micro-injection molding machine has the advantages of good plasticizing effect, but the small-sized screw has problems such as difficult processing, limited service life, long plasticizing time of molding materials and low utilization efficiency, and it is difficult to control the injection volume. The precision is poor; the control precision of the injection volume of the plunger type micro injection molding machine is higher than that of the screw type, but its plasticizing ability is low, the plasticizing uniformity is poor, and the plasticizing quality of the material is difficult to meet the requirements of high precision; the screw plunger hybrid micro injection molding machine The injection molding machine combines the advantages of the screw type and the plunger type, but it still cannot get rid of the problems in the processing and use of the small size screw

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