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Extruder with reinforced heat transmission and mixing functions

A technology of mixing extrusion and enhanced heat transfer, which is applied in the field of plastic extrusion molding devices, can solve problems such as poor heat transfer effect, and achieve the effects of low maintenance cost, convenient installation, and enhanced transfer

Inactive Publication Date: 2011-04-20
BEIJING UNIV OF CHEM TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pin is fixed relative to the screw, which will cause poor heat transfer effect

Method used

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  • Extruder with reinforced heat transmission and mixing functions
  • Extruder with reinforced heat transmission and mixing functions
  • Extruder with reinforced heat transmission and mixing functions

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Embodiment Construction

[0027] The present invention enhances heat transfer and mixing extruder such as figure 1 As shown, it consists of a feeding and plasticizing part 1, a heating and cooling part 2, a control system 3 and a transmission system 4. Among them, there is a rolling body 1-2 between the screw rod 1-1 and the barrel 1-3 of the feeding and plasticizing part, see figure 2 . Several screw grooves 1-4 are provided in the circumferential direction of the homogenizing section of the screw 1-1. The rolling body 1-2 is installed in the groove 1-4, and the rolling body 1-2 can roll with the screw rod. The screw is installed in the barrel 1-3.

[0028] The cooperation between the rolling element 1-2 and the inner diameter of the barrel 1-3 is very important to the whole injection molding device. The rolling body 1-2 can rotate around the screw rod 1-1 or roll within a certain range. The depth of the rolling element 1-2 embedded in the screw 1-1 is greater than the gap between the rolling el...

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Abstract

The invention relates to an extruder with reinforced heat transmission and mixing functions. The extruder mainly comprises a feeding and plasticizing part, a heating and cooling part, a control system, a drive system and the like, wherein the structures and connection modes of the feeding and plasticizing part, the heating and cooling part, the control system and the drive system are the same as those of a common extruder; a rolling element is arranged between a screw of the feeding and plasticizing part and a cylinder of the feeding and plasticizing part; a groove is formed on the screw; the rolling element is rolled in the groove; and the depth of the rolling element embedded in the screw is larger than the gap between the rolling element and the cylinder. In the extruder provided by the invention, when the screw rotates, the rolling element freely rotates in the corresponding groove while rotating in the cylinder along with the screw; the rolling element causes heat to be delivered in materials through rolling, simultaneously the rolling element is made of materials with good thermal conductivity, thus the heat of the cylinder is rapidly delivered to the interiors of the melting materials; and because of the existence of the rolling element and rotation of the rolling element in the groove, the melting materials are repeatedly segmented and refined as well as merged and converged, thus the materials can be fully mixed, and the mixing effect of the addictive is improved.

Description

technical field [0001] The invention relates to a plastic extrusion molding device, in particular to an extruder capable of strengthening heat transfer and mixing. Background technique [0002] Extruder is one of the main equipment in plastic processing industry. The extruder host is mainly composed of feeding and plasticizing system, transmission system, heating and cooling system, control system and other parts. Among them, the screw and barrel are the key components of the extruder. The screw rotates in the heated barrel, the main function is to melt and mix solid plastic particles or powder, and the polymer melt is extruded into the molding head to form and shape to obtain finished products or semi-finished products. The plasticizing effect of the screw determines the performance of the whole extruder, but the heat transfer and mixing effect of the conventional extruder is not good, especially when the screw groove is deep. [0003] Among the screws of the extruder, t...

Claims

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Application Information

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IPC IPC(8): B29C47/38B29C47/64B29C48/395B29C48/67
CPCB29C47/605B29C47/6043B29C48/565B29C48/56
Inventor 杨卫民张攀攀谢鹏程焦志伟丁玉梅
Owner BEIJING UNIV OF CHEM TECH
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