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Suzhou Kautas Machinery Co., Ltd

Address:Zhongxing intersection of Gangcheng Avenue, Zhangjiagang City, Jiangsu Province 

Contact:Mr Mike Xu      

Tel : 0086-13906242281     

E-mail:

China.kautas@gmail.com




Suzhou Kautas section three theis full thread screw design

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Suzhou Kautas section three theis full thread screw design

Release date:2018-01-02 00:00 source: Click:

             

 Suzhou Kautas Automatic blow molding machine that is designed with three full thread segment.

The so-called three section full threaded screw, refers to the most widely used, the whole screw by three sections, and its extrusion process entirely depends on the form of complete thread screw. The design of the screw includes the determination of the form of the screw, the subsection of the screw and the determination of the parameters of each section, the determination of the diameter of the screw and the ratio of the length to diameter, and the determination of the clearance between the screw and the cylinder. The following are described separately:

(1) determination of screw type;

Conventional full thread three section screw is divided into progressive screw and sudden change screw. The tapered screw is defined by the feeding section of deep groove to homogeneous section deep groove transition is accomplished in the screw axis in a long distance, and the transition of mutant screw is completed in a relatively short distance of the screw shaft and.

(two) determination of screw diameter;

Screw diameter is an important parameter. It represents the amount of extruder extrusion in a certain sense. The diameter of the screw is generally determined by the section size of the machined product, the kind of plastic used and the required productivity. There is a proper relationship between the cross-sectional area of the product and the size of the screw diameter. Generally speaking, large section products choose big screw diameter, small section products choose small screw diameter.

(three) the determination of the ratio of length to diameter of the screw

The aspect ratio of the screw is one of the important parameters of the screw. If it is related to the screw revolution, in a sense, it also indicates the plasticizing ability and plasticizing quality of the screw. The length of the screw rod increases, the plastic stays in the material barrel for a long time, and the plasticization is more fully and more evenly, so the quality of the product can be guaranteed.

(four) the subsection of the screw and the determination of the parameters of each section

The three section of full thread is divided into feeding section, compression section and homogenizing section. The three sections are different in the extrusion process. In the design of the screw, the selection of each geometric parameter should be considered around the function of the section and the relationship between the whole screw and each section.


  

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