Planetary screw mixing integral injection molding machine

A planetary screw, injection molding machine technology, applied in the field of injection molding machines, medium and large injection molding machines, can solve the problems of difficult to solve the sealing and heating of the storage cavity, the length of the whole machine is large, the structure is complex, etc., to ensure injection and pressure retention. Effect, high shearing times, compact structure of the whole machine

Active Publication Date: 2012-07-04
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its structure is complex, the length of the whole machine is large, the entire plasticizing device must move as a whole during injection, and the useless load of injection is large, and the sealing and heating problems of the variable volume storage chamber are difficult to solve

Method used

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  • Planetary screw mixing integral injection molding machine
  • Planetary screw mixing integral injection molding machine
  • Planetary screw mixing integral injection molding machine

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Such as figure 1 and figure 2As shown, a planetary screw mixing integral injection molding machine of the present invention is mainly composed of a nozzle 1, a barrel 22, a heating device 9, a hopper 21, a screw head 3, a check ring 4, a main screw 27, and an integral planetary screw 13. , front stop ring 10, rear stop ring 18, plunger 17, thrust bearing 24, bearing cover 23, transmission device 25 and injection cylinder 32, main screw 27 is composed of screw front section 5, screw planetary section 15, screw The feeding section 20 and the screw drive section 26 are composed of a through hole (storage cavity) 33 at the center of the main screw 27, and the barrel 22 is sequentially composed of the front barrel 2, the first section 8 of the barrel, the second section 11 of the barrel, and the barrel feeding section 19, the injection cylinder 32 is composed of an injection piston 31, an injection piston rod 35, an injection cylinder barrel 29, an injection cylinder front...

Embodiment 2

[0036] see image 3 , the structure, working principle and effect of this embodiment and embodiment 1 are basically the same. The difference is that the main screw 27 can also be composed of the front section 5 of the screw, the homogenizing section 7 of the screw, the planetary section 15 of the screw, the feeding section 20 of the screw and the transmission section 26 of the screw in turn, and the center of the main screw 27 has a through hole (storage chamber ) 33, adding a thrust ring 6 set on the front section 5 of the screw, the screw head 3 is connected with the front section 5 of the screw through threads, the screw head 3 is in contact with the end surface of the thrust ring 6; the anti-reverse ring 4 is set on the screw head 3, the anti-reverse ring 4 cooperates with a section 8 of the machine barrel and can slide relative to the axial direction; the non-return ring 4 can be in contact with the thrust ring 6 . During injection, under the action of injection pressure...

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Abstract

The invention discloses a planetary screw mixing integral injection molding machine, which belongs to the field of high molecular material forming machines and is particularly suitable for medium and large-scale injection molding machines. The planetary screw mixing integral injection molding machine mainly comprises a nozzle, a machine barrel, a heating ring, a feed hopper, a screw head, a checkring, a main screw, a planetary screw, a front stop ring, a rear stop ring, a plunger, a thrust bearing, a bearing cover, a driving device and an injection oil cylinder, wherein a through hole is formed in the center of the main screw; the plunger is arranged in the through hole of the main screw; the planetary screw is arranged in a screw planetary segment of the main screw or a machine barrel second segment; and the planetary screw is meshed with the screw arris of the screw planetary segment and the screw arris in the machine barrel second segment. Two processes of mixing and injection molding are integrated, so the planetary screw mixing integral injection molding machine has the advantages of maintaining the original properties of materials to the greatest extent and eliminating energy consumption required in secondary heating process, along with many total meshed times of all the meshed screws, extremely high plasticizing efficiency, large production output, low specific energy consumption, high measuring accuracy, low injection resistance and compact structure of the whole machine.

Description

technical field [0001] The invention relates to an injection molding machine, which belongs to the field of polymer material forming machinery, and is especially suitable for medium and large injection molding machines. Background technique [0002] The development of modern science and technology requires polymer materials to have comprehensive properties in many aspects. For example, some plastics are required to be high temperature resistant and easy to form and process; both high strength and good toughness are required; both excellent mechanical properties and certain special functions etc. It is difficult for a single polymer material to meet these high-performance requirements. In addition, the science of polymer materials has entered a relatively mature stage. It is very difficult to develop a new material, which is not only time-consuming and costly, but also the possibility Getting smaller and smaller. In contrast, the use of existing polymer materials for blendi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/03B29C45/53B29C45/60
CPCB29C45/60B29C45/47B29C45/53B29C45/541
Inventor 杨卫民焦志伟安瑛谢鹏程丁玉梅
Owner BEIJING UNIV OF CHEM TECH
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