Fusant differential precise injection molding machine

Abstract

The invention relates to a fusant differential precise injection molding machine which mainly comprises an injection molding system, a die combining system and a metering and shunting system, wherein the injection molding system and the die combining system are the same with the conventional injection molding machine; the metering and shunting system comprises a planetary gear pump, a coupling, a drive motor, a controller and a heating device; and the planetary gear pump is provided with a main inlet and a plurality of outlets and used for transmitting, shunting, pressurizing and metering a high-temperature fusant. The invention is the injection molding machine which can produce a miniature product, combines the beneficial conditions of the conventional injection molding machine, overcomes the defects of the traditional micro-injection molding machine by introducing the metering and shunting system, has the advantages of good plasticizing effect and high injection pressure and injection speed and can realize precise metering and the large-scale and low-cost production of parts with high precision and high fineness. The injection molding system and the die combining system of the conventional injection molding machine are adopted, thereby improving the common injection molding machine directly and realizing the functional of differential injection molding by adding the metering and shunting system.

Description

technical field [0001] The invention relates to the technical field of injection molding equipment, in particular to a precision injection molding machine capable of molding miniature products. Background technique [0002] With the advancement of science and technology, products continue to develop in the direction of miniaturization, thus producing MEMS technology that is required by the industry in the new century. Micro-injection molding technology has become one of the research hotspots in the world's manufacturing technology because of its advantages of easy realization of low-cost mass production of parts with precise microstructure. The quality of the finished product is calculated in milligrams, and the geometric size of the finished product is measured in microns. Micro-injection molding technology is a new advanced manufacturing technology. Forming equipment and other aspects have put forward different requirements. [0003] At the beginning of the development o...

AI Technical Summary

Problems solved by technology

However, due to the non-return ring structure at the front end of the screw, the control accuracy of the equipment for a single injection volume is poor

Moreover, although the plasticizing effect of the screw type is better, there are still problems such as difficult processing of small-sized screws, limited service life and long plasticizing time.

The plunger micro injection molding machine usually has a small amount of plasticization, the quality of plasticization is not high, and the mixing performance is also poor.

For the plunger type micro-injection molding machine, although the control accuracy of the injection volume is higher than that of the screw type, its plasticizing amount is small, the mixing performance is poor, and the plasticizing quality of the material is worse than that of the screw type, which is not conducive to the molding surface quality and optical quality. Parts with higher characteristic requirements

The screw-plunger hybrid micro-injection molding machine combines the advantages of the plunger type and the screw type. The screw is used as the plasticizing unit, and the plunger is used as the metering and injection unit, so that the control accuracy of the micro-injection molding and the molding quality of the parts are uniform. It has been significantly improved, but usually its structure is more complicated, and the control and maintenance are more cumbersome than the plunger and screw types

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