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Fusant differential precise injection molding machine

An injection molding machine and melt differentiation technology, applied in the field of precision injection molding machines, can solve the problems of limited service life, long plasticizing time, poor mixing performance, etc., and achieve limited service life, long plasticizing time, mixing The effect of high material performance

Active Publication Date: 2012-07-25
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Fusant differential precise injection molding machine
  • Fusant differential precise injection molding machine
  • Fusant differential precise injection molding machine

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Embodiment Construction

[0021] The melt differential precision injection molding machine of the present invention is such as figure 1 , figure 2 , image 3 with Figure 4 As shown, it consists of an injection molding system (4), a clamping system (1), and a metering and splitting system; the injection molding system (4) and a mold clamping system (1) are the same as those of a conventional injection molding machine. The metering and splitting system is composed of a planetary gear pump (3). ), coupling (6), drive motor (7), controller and heating device (5), planetary gear pump (3) has a main inlet (3-1) and multiple outlets (3-5) , The main inlet (3-1) is connected with multiple inlet branches (3-2), and each branch has a corresponding outlet (3-5) after passing through the gear pump; this embodiment 1 uses a planetary inlet and six outlets Gear pump (3), which has a main inlet (3-1) and six outlets (3-5); this embodiment 2 uses a planetary gear pump (3) with one input and sixteen outputs, such as ...

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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, adrive 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 meteringand 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 that can realize the molding of micro products. Background technique [0002] With the advancement of science and technology, products continue to develop in the direction of miniaturization, resulting in the MEMS technology required by the industry in the new century. Micro-injection molding technology has become one of the research hotspots of manufacturing technology in the world because of its advantages of easy realization of low-cost mass production of precision and microstructure parts. The quality of the finished product is calculated in milligrams, and the geometric size of the finished product is measured in micrometers. Microinjection molding technology is an emerging advanced manufacturing technology. Compared with traditional and conventional injection molding technology, its impact on molding materials, molding pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/76B29C45/73
CPCB29C45/2701B29C2045/0094
Inventor 杨卫民王建谢鹏程丁玉梅阎华安瑛刘勇
Owner BEIJING UNIV OF CHEM TECH
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