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Single screw pulse induced fusion plastification extrusion apparatus

An extrusion device and single-screw technology, which is applied in the field of polymer material molding and processing, can solve the problems that the vibration melting plasticization cannot be fully realized, the vibration effect cannot be fully strengthened, and the vibration grinding effect cannot be realized, and the energy loss can be reduced. , Reduce the amount of extrusion swelling and improve the mixing effect

Inactive Publication Date: 2008-02-20
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the extrusion method and equipment described in this patent (901034.0) use the traditional screw and barrel structure, so the vibration effect cannot be fully strengthened, the vibration melt plasticization cannot be fully realized, and the vibration grinding effect cannot be realized. , can not achieve complete mixing of materials, when the screw speed is high, the residence time of materials becomes shorter, and the melting and plasticizing effect will become worse

Method used

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  • Single screw pulse induced fusion plastification extrusion apparatus

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Embodiment Construction

[0025] Fig. 1 is a schematic diagram of the principle and structure of the single-screw pulsation-induced melt-plasticizing extruder of the present invention.

[0026] In Figure 1, 1 is the exciter, which mainly provides the axial vibration of the screw and is fixed on the left side of the chassis 2. The chassis 2 is composed of a motor that provides screw rotation, a reducer, and temperature, pressure, speed, amplitude and vibration frequency, etc. Composed of the control system, the screw 4 passes through the hollow shaft of the reducer and connects with the vibrator 1, and the barrel 3 is fixed on the right side of the machine case. The eccentric disk 5 is fixed on the screw mandrel and rotates together with the screw, the grinding ring 6 is fixed on the inner surface of the barrel, the end surfaces of the eccentric disk 5 and the grinding ring 6 are provided with a plurality of wedge-shaped grooves, and the inner surface of the grinding ring 6 is provided with teeth Type g...

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Abstract

The invention relates to single screw rod pulsating inducing melting plasitification squeeze method and the equipment, which adopts the screw rod with a plurality of eccentric dials, the mill ring and the orientation ring devices. Produce multi-dimensional friction, cutting, squeeze and milling during the screw rod running and the axial vibration to make the polymer produce dissipation heat, increase the free volume and induce big molecular chain de-tangling to finish the melting plasitification of the polymer.

Description

[0001] Field of branching [0002] The invention relates to a single-screw pulsation-induced melting and plasticizing extrusion method and device in the field of polymer material molding and processing. Background technique [0003] In the traditional extrusion method and equipment, the heat source of melting polymer mainly relies on the heating of the heater on the outer wall of the barrel, and then the heat energy passes through the barrel from the outside to the inside, and conducts heat transfer at the junction of the inner wall of the barrel and the material, and the screw Shearing the material generates shear heat, which melts the polymer material. However, due to the very small thermal conductivity of polymer materials, which is two orders of magnitude smaller than that of air, some polymers can even be used as thermal insulation materials; and due to the poor mixing effect of traditional screws, uneven heating of materials may occur. The temperature of the material ne...

Claims

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Application Information

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IPC IPC(8): B29C47/44B29C47/64B29C48/45B29C48/67
CPCB29C47/64B29C47/6062B29C47/385B29C48/397B29C48/575B29C48/67
Inventor 瞿金平周南桥
Owner SOUTH CHINA UNIV OF TECH