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A twin-screw volume displacement stretching deformation plasticizing processing method and equipment

A volume replacement and tensile deformation technology, applied in the plastics processing industry, sustainable manufacturing/processing, extrusion molding machines, etc., can solve the problems of long thermomechanical history, uneven mixing and plasticization, and easy thermal separation of materials. , to achieve the effect of facilitating the popularization and application, reducing the energy consumption of plasticization and transportation, and improving the adaptability of materials

Inactive Publication Date: 2015-12-02
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a twin-screw volume displacement tensile deformation plasticization processing method to solve the problems of uneven mixing and plasticization, long thermomechanical history of materials, high energy consumption, and easy handling of materials during the molding process of polymer materials. thermal decomposition problem

Method used

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  • A twin-screw volume displacement stretching deformation plasticizing processing method and equipment
  • A twin-screw volume displacement stretching deformation plasticizing processing method and equipment
  • A twin-screw volume displacement stretching deformation plasticizing processing method and equipment

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Experimental program
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Effect test

Embodiment 1

[0021] Such as figure 1 , 2 As shown, a twin-screw volume displacement stretching deformation plasticizing processing equipment includes a first screw 1 and a second screw 2, the first screw 1 or the second screw 2 are counter-rotating twin-screws, which are arranged in a barrel, Connect with the driving device respectively; in the screw groove 4 of the first screw rod 1 and the second screw rod 2, a circumferential stopper 7 is added, the circumferential stopper 7 is in the shape of a ring, and the height of the circumferential stopper 7 is the same as that of the screw edge 3 ; On the screw edge 3 of the first screw rod 1 and the second screw rod 2, a circumferential block engagement groove 9 is provided, and the circumferential block engagement groove 9 is in the shape of a circumferential groove, and the depth of the circumferential block engagement groove 9 is the same as that of the screw groove 4 The depth is the same; the engagement groove 9 of the circumferential blo...

Embodiment 2

[0024] refer to image 3 , twin-screw volume displacement tensile deformation plasticizing extrusion equipment, mainly composed of the first screw 1, the second screw 2, the hopper 12, the barrel 13, the die head 14 and the driving device, wherein the first screw 1, the second screw 2 with figure 1 , 2 The twin-screws are the same, located in the barrel 13, respectively connected to the driving device; in the screw groove 4 of the first screw 1 and the second screw 2, a circumferential stop 7 is added, and the circumferential stop 7 is in the shape of a ring, and the circumference The height of the block 7 is the same as the height of the flight 3; on the flight 3 of the first screw 1 and the second screw 2, a circumferential stop engagement groove 9 is provided, and the circumferential stop engagement groove 9 is in the shape of a circumferential groove. The depth of the block engagement groove 9 is the same as that of the screw groove 4; a hopper 12 is provided at one end ...

Embodiment 3

[0026] refer to Figure 4 , the twin-screw volume replacement tensile deformation plasticization injection equipment is mainly composed of a twin-screw volume tensile deformation plasticization transport device I, a plunger injection unit II and a collector 15; wherein, the plunger injection unit II is mainly composed of an injection cylinder 16. Composition of injection piston 17, injection barrel 18, nozzle 19, etc. The feed end face of the material collector 15 is fixedly connected with the discharge end face on the die head 14 of the twin-screw volume stretching deformation plastic transportation equipment I, and the discharge end face of the material collector 15 is connected with the injection material of the plunger injection unit II. The feeding end surface of the cylinder 18 is fixedly connected; the front end of the injection cylinder 18 is provided with a nozzle 19, and the rear end is provided with an injection cylinder 16; the injection piston 17 is arranged in th...

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Abstract

The invention discloses a method and equipment for double-screw size replacement dragging deformation plasticization machining. According to the equipment, circumference baffle plates are additionally arranged inside screw grooves of a first screw rod and a second screw rod; circumference baffle plate meshing grooves are formed in the screw edges of the first screw rod and the second screw rod; and the circumference baffle plates in the screw grooves in the first screw rod and the second screw rod are meshed with the circumference baffle plate meshing grooves in the screw edges of the second screw rod or the first screw rod. When the double screws rotate, the volume of a curved rhombus space formed by two circumference baffle plates in the screw grooves of one screw rod and the inner surface of a cylinder is replaced by the volume of a curved rhombus entity between the two circumference baffle plate meshing grooves on the screw edges of the other screw rod, so that the compression and the plasticization of a material are realized, and the material is discharged out from a downstream top part notch in the curved rhombus space. By utilizing the method and the equipment, the extrusion machining of a high polymer material is realized, or the equipment is combined with a plunger injection unit so as to realize injection molding machining, and the method and the equipment have the characteristics of good material mixing plastification effect, short thermal machine process, low energy consumption, wide application, convenience in assembling and disassembling and the like.

Description

technical field [0001] The invention relates to a polymer material plasticizing processing method and equipment, in particular to twin-screw plasticizing processing, in particular to a polymer material twin-screw volume stretching deformation processing method and equipment. technical background [0002] Twin-screw extrusion processing is an important method in the processing of polymer materials. Compared with single-screw extrusion processing, twin-screw extruder has better feeding characteristics, and has better mixing, exhaust, reaction and self-efficacy. Clean function, suitable for processing plastics and blends with poor thermal stability. The material transportation of twin-screw extrusion processing mainly depends on the dragging effect on the material when the screw rotates. This transportation process is dominated by shear stress, so the current twin-screw extrusion processing of polymer materials generally has material plasticization transportation. Experienced ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C47/40B29C48/475B29C48/60
CPCB29C47/54B29C47/6043B29C47/6075Y02P70/263B29C48/475B29C48/56B29C48/40B29C48/60Y02P70/10
Inventor 瞿金平杨智韬
Owner SOUTH CHINA UNIV OF TECH