What are the characteristics of rubber extruders?

Rubber extruder structure usually consists of barrel, screw, feeding device, head, heating, and cooling device, transmission system, and other parts. The main technical parameters of rubber extruder are screw diameter, aspect ratio, compression ratio, speed range, screw structure, production capacity, power, etc. If you are also interested in this, you can read on.

Here is the content list:

•  What is the structure of rubber extruder?

•  What is the working principle of rubber extruder?

•  How many sections do rubber extruder work?

What is the structure of rubber extruder?

1. Barrel

Since the barrel of the rubber extruder cooperates with the screw during work, the rubber material undergoes the interaction of the inner wall of the barrel and the rotating screw to ensure that the rubber material moves and mixes under pressure. Usually, it also plays a role in heat exchange. For rubber extruder to advance the rubber along the screw groove, the friction coefficient between the rubber and the screw and between the rubber and the barrel must be as wide as possible. The surface of the barrel wall should be as rough as possible to increase the friction, while the surface of the screw is Strive to be smooth to reduce the coefficient of friction and friction. Otherwise, the rubber material entering the rubber extruder will tightly wrap the screw and cannot be pushed forward.

2. Screw

The screw is the main working part of the rubber extruder. It generates enough pressure during work to make the rubber of rubber extruder overcome the flow resistance and be extruded, and at the same time make the rubber plasticize, mix and compress, to obtain a dense and uniform semi-finished product.

What is the working principle of rubber extruder?

Lavette extrusion is the process of continuously extruding a plastic material with a certain degree of plasticity from the mouth under certain conditions to produce a product with a certain cross-sectional shape. As the rubber material moves forward along the screw, the viscosity and plasticity of the rubber material change to a certain extent due to the mechanical action and thermal action of the rubber extruder, and it becomes a viscous fluid. According to the change of the rubber material in the extrusion process, the working part of the screw is generally divided into three parts: feeding section, compression section, and extrusion section according to its different functions.

How many sections does rubber extruder work?

1. Feeding section: also known as the solid conveying section, this section starts from the feeding port of the rubber extruder to the beginning of the melting of the rubber. After the rubber material enters the feeding port, under the pushing action of the rotating screw, it makes relative movement between the thread groove of the rubber extruder and the inner wall of the barrel and forms a certain size of a micelle.

2. Compression section: also known as the plasticization section, this section starts when the rubber of the rubber extruder starts to melt until all the rubber material flows. The compression section receives the micelles sent from the supply section, compresses them, softens them, and discharges the air mixed in the rubber to the supply section.

3. Extrusion section: Also known as the metering section, the rubber material delivered from the compression section is further pressurized and stirred. At this time, a completely flowing rubber material has been formed in the thread groove of the rubber extruder. The rotation of the screw of the rubber extruder promotes the flow of the rubber material and uniformly extrudes it from the flow channel of the die with a certain volume and pressure.

Qingdao Huicai Machine Manufacture Co., Ltd developed a rubber extruder. The rubber extruder is very cost-effective and is a good choice. Because it has a strong advantage over other companies in terms of quality and price, if you also need this product, you can contact us.