Extrusion molding machines are widely used in the production of pipes, bars, profiles, hollow finished products and monofilaments. The extruder can also carry out preparatory processes or semi-finished products such as mixing, plasticizing, dehydrating, granulating, and feeding the plastic. Therefore, extrusion molding has become one of the most widespread plastic molding processing methods. Extrusion molding is a method in which materials are heated and pressurized in an extruder to continuously pass through the die in a flowing state. It is a molding method with higher skill requirements.

The planning of plastic extrusion heads requires planners to have a thorough grasp of the characteristics of plastics and rich experience in the planning of plastic extrusion heads. The single-screw extruder is the most widely used extruder, and in the planning process, the questions encountered in practice are very messy, because the varieties of plastics are different, their shear speed, appearance viscosity, and lubrication are different. Because of the different types and dosages of fillers and fillers, their fluidity is also different. Therefore, the structural planning of the plastic extrusion head is still based on practical experience, and most of them choose the final test mold to determine its shape. The first plan in this plan is the working surface size, shape size, and overall structure of each part in the extruded plastic head. Because the characteristics of plastic raw materials require very high requirements for the extruded plastic head, the processing of the main parts is carried out. The planning of production skills has also carried out the planning of the connection mode of the machine head and the extrusion host.

The development process of the extruder Since the first extruder was launched, the extrusion technology has been developed rapidly. From the initial plunger type to the more advanced screw type, from the initial manual operation to the complete automatic control, from the single product to the diversified product, the extrusion molding skills are gradually becoming sophisticated. Now, extrusion molding has the characteristics of high production efficiency, convenient production, and continuous production. It occupies a very important position in the plastic molding processing industry. For half a century, China’s plastics industry has experienced the development process from scratch, from small to large, especially the rapid development in the past two decades of reform and opening up, has initially formed a complete industrial system, and has already ranked among the products in terms of output value. In the international leading team. The plastic machinery profession is a profession that provides technical equipment for the plastic industry, and weak market demand promotes the development of the plastic machinery industry. Extrusion molding skills have been well developed.