Rotation and axial vibration synergic driving method and device for screw rod of directly-driven dynamic extruder

Abstract

The invention relates to a rotation and axial vibration synergic driving method and a rotation and axial vibration synergic driving device for a plasticized transport screw rod of a directly-driven dynamic extruder. A swinging driving sleeve of the device is connected with a motor hollow shaft through a linear rolling bearing; the swinging driving sleeve is connected with a shaking ring through aligning thrust roller bearings which are symmetrically arranged on both sides of the shaking ring; the swinging driving sleeve is fixedly connected with the plasticized transport screw rod; the inner hole central line of the swinging driving sleeve is coincided with the central line of the motor hollow shaft; meanwhile, the shaking ring is connected with a joint bearing; the shaking ring is restrained by using the joint bearing, and swings by taking the joint bearing as a supporting point; the swinging driving sleeve has a cylindrical structure; the middle part of a cylinder is provided with a cylindrical through hole; and the central line of the outer cylindrical surface of the swinging driving sleeve intersects with the central line of the inner hole cylindrical surface, so that an angle alpha is formed. The swinging driving sleeve is used for driving the plasticized transport screw rod to vibrate axially during rotating, so that homologous synergic driving of the rotation and axial vibration of the screw rod are realized. The device has the characteristics of large axial vibrating amplitude of the plasticized transport screw rod, high stability, high reliability and the like.

Description

technical field [0001] The invention relates to a polymer material plasticizing extrusion equipment, in particular to a motor direct-driven dynamic extrusion method in which the rotation of a plasticizing transport screw and axial vibration cooperate and the equipment for realizing the method. technical background [0002] Extrusion molding is one of the most important methods for the molding and processing of polymer materials, and the most commonly used processing equipment is a screw extruder. The transmission part of the commonly used screw extruder is mainly composed of motor, coupling, gearbox, etc., which has problems such as torque fluctuation at low speed, unstable operation, low operating efficiency, long transmission chain, and high energy loss. In addition, the plasticizing transport mechanism of the screw extruder is based on the shear rheology, and its plasticizing transport capacity strongly depends on the friction between the material and the surface of the m...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a motor direct-driven plasticizing extrusion method in which the plasticizing transport screw rotation and axial vibration cooperate to overcome the large volume and occupied area of ​​the extruder in the prior art, poor operation stability, Disadvantages such as low energy utilization

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