Vibrating type screw extrusion molding device and method

Abstract

The invention discloses a vibrating type screw extrusion molding device. The vibrating type screw extrusion molding device comprises a driving shaft, a charging barrel, a screw and a shock excitation mechanism. The shock excitation mechanism comprises a box, a shock excitation coupling half, a first coupling half matched with the shock excitation coupling half, a rolling spline and a limiting disk. The shock excitation coupling half is installed at one end of the driving shaft through the rolling spline. The first coupling half is installed at one end of the screw. The shock excitation coupling half is connected with the first coupling half. The limiting disk is fixed in the box, one end of the driving shaft penetrates through the limiting disk, a roller groove is formed in the end face of the limiting disk, and a shock excitation roller is embedded in the roller groove. A concave-convex curved surface in smooth transition is arranged on the end face of one end of the shock excitation coupling half. The shock excitation roller is meshed with the concave-convex curved surface. The invention further discloses an extrusion molding method of the vibrating type screw extrusion molding device. By means of the device, the flowing resistance of materials is reduced, the energy loss of the materials in plasticizing transportation is reduced, and the mixing effect is improved.

Description

technical field [0001] The invention relates to plastic processing technology, in particular to a vibrating screw extrusion molding device and method. Background technique [0002] Screw extrusion molding equipment is one of the most important equipment for processing high molecular polymer materials. Commonly used screw extrusion molding equipment is mainly composed of driving elements such as motors, power transmission mechanisms such as gear reducers, screws, and barrels. The plasticizing and transportation mechanism of the screw extruder is based on the shear rheology theory, and its plasticizing and transportation ability depends entirely on the friction between the material and the inner wall of the barrel and the internal friction between the materials force. With the continuous improvement of the quality requirements for extruded products, researchers have adopted a series of measures to improve extrusion, such as slotting the fixed conveying section of the barrel ...

AI Technical Summary

Problems solved by technology

However, this causes the friction and wear between the barrel and the screw to increase, the noise increases, the quality and volume of the equipment increase, and the manufacturing cost of the equipment also increases accordingly.

At the same time, if the above-mentioned equipment is used for extrusion molding, the material flow resistance is relatively large, the energy consumption of material transportation and plasticization is high, and the mixing effect of the material is poor.

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