Sliding self-adaptive plasticizing extruding device and method

Abstract

The invention discloses a sliding self-adaptive plasticizing extruding device and method. In the device, a screw rod mechanism comprises a forced feeding screw rod and a measuring extruding screw rod, which are coaxially arranged, wherein the forced feeding screw rod is connected with the measuring extruding screw rod through an eccentric rotating assembly; the eccentric rotating assembly comprises a plurality of eccentric rotating discs which are coaxially arranged, and every two adjacent eccentric rotating discs are engaged with each other through a sliding groove. The method comprises the following steps of transporting a material on a solid transporting section through the forced feeding screw rod, melting, plasticizing and mixing the material at a melt mixing section through the eccentric rotating assembly, and finally extruding and molding the material inn a measuring extruding section through the measuring extruding screw rod. Through the eccentric rotating mechanism, the melting efficiency can be increased through the alternating effect of the primary compression process and the secondary compression process of different eccentric rotating discs in the eccentric rotating mechanism, so that the self-adaptive high-efficient melting can be realized for different kinds of materials according to different machining yield requirements, the melting efficiency can be improved, organic combination of the mixing and melting process can be enhanced, and the mixing and heat conduction process can be enhanced.

Description

technical field [0001] The invention relates to the technical field of polymer material plasticizing extrusion processing, in particular to a sliding self-adaptive plasticizing extrusion device and method. Background technique [0002] Single-screw extruder is widely used in the field of polymer material processing. It has the characteristics of simple structure, convenient maintenance and operation, and can establish stable extrusion pressure. However, it has the defects of low plasticizing efficiency and poor mixing and mixing effect. Using a single-screw extruder for plasticizing and extrusion processing of polymer materials, the traditional method generally separates the melting process and the mixing process to improve the melting and plasticizing efficiency. [0003] In order to further improve the melting and plasticizing efficiency, new structures such as separate screws have also appeared, striving to separate the solid bed from the molten pool and speed up the melt...

AI Technical Summary

Problems solved by technology

[0003] In order to further improve the melting and plasticizing efficiency, new structures such as separate screws have also appeared, striving to separate the solid bed from the molten pool and speed up the melting process, but the height and helix angle of the secondary flight are strongly dependent on the properties of the processed material , it often occurs that the compression speed of the solid bed is too fast, causing the channel to be blocked and unable to feed the material, or the compression is too slow, the screw structure cannot adapt to the requirements of the type of processing material and the change of output, and the purpose of accelerated melting cannot be achieved.

[0004] For intensified mixing and mixing, various structures such as pin screw, pineapple block mixing section, and barrier screw have appeared, but their mixing capacity is still not up to the level of co-rotating twin screws, and they cannot undertake complex mixing tasks.

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