Views: 2 Author: Site Editor Publish Time: 2022-05-26 Origin: Site
The elastomer extruder is a basic equipment in the rubber industry and one of the key equipment affecting the product quality. It plays a very important role in the production process of tires and rubber products.
What are the main parts of elastomer extruder?
How does the elastomer extruder work?
What are the structural properties of the elastomer extruder?
1. Extrusion equipment: It is composed of hydraulic cylinder, cylinder, machine head, etc.
2. Hydraulic device: High pressure gear pump and flow valve are selected. The hydraulic oil of the hydraulic cylinder is controlled by the flow valve. The differential pressure valve before and after throttling is always adjusted to a constant value to ensure accurate control of the weight of the extruded rubber blank.
3. Pneumatic device: It is used to control the opening and closing of the head of elastomer extruder.
4. Vacuum system: Before the elastomer extruder extrudes and cuts the rubber material, a vacuum is applied to remove the air inside the cylinder and machine head and the gas mixed into the rubber material to improve the quality of the vulcanized products in the next process.
The elastomer extruder completes all the above processes with a cylinder with a screw and a screw channel. Plastic pellets enter the barrel through a funnel at one end of the barrel and are then transported through a screw to the other end of the barrel. In order to have sufficient pressure, the screw thread depth decreases with increasing distance from the hopper. External heating as well as internal heating due to friction in the plastic and the screw make us work!
The engagement area of the extruded elastomer thread element has a large velocity gradient, so it is conducive to the complete mixing of materials in the engagement area. The number of engagement zones of single-type twin-screw, triple-screw, triangular triple-screw and four-screw extruders is 1, 2, 3 or more. By increasing the number of intervention zones, the mixing capacity of the materials is gradually increased. Triangular three-screw and four-screw extruders have a special structure. The material in the central area forms a circulation, and the presence of circulation promotes mixing of the material in the central area, increasing the mixing time of the material in the central area. After analysis, the material does not remain in the central area. The flow velocity, return velocity, return coefficient and average shear speed of twin screw, "single" shaped triple screw, triangular triple screw and quadruple screw extruders gradually increased one after the other. It has better production capacity in terms of transport capacity and material mixing capacity, and the multi-screw elastomer extrude is more suitable for polymer processing.
In industrial production, we need elastomer extruders to improve the quality of our products. Nanjing Haisi has been working for several years to provide the best elastomer extruders to meet the needs of all customers.