In today's social life, the categories of extruders are more and more complicated. What are the functions of PVC extruder? The following is the related content for you.
The functions of PVC extruder are as follows:
1. Raw material mixing is to add PVC stabilizer, plasticizer, antioxidant and other auxiliary materials in the high-speed mixer according to the proportion and process. Through the self friction between the material and the machine, the material is heated to the set process temperature, and then the cold mixer reduces the material to 40-50 degrees, so as to add it to the hopper of the extruder.
2. The extruder is equipped with a quantitative feeding device to match the extrusion amount with the feeding amount and ensure the stable extrusion of products. Due to the characteristics of the conical screw, the larger the diameter of the feeding section, the larger the heat transfer area and shear speed of the material, which is conducive to the smaller diameter of the screw in the plasticizing metering section, reducing the heat transfer area and shear speed of the melt, so that the melt can be extruded at a lower temperature. When the screw rotates in the barrel, the PVC mixture is molded
3. The extrusion die head is homogenized after compaction, melting and mixing, and the subsequent materials are pushed to the die head with screws. Extrusion die is the key component of tube forming.
4. The vacuum shaping water tank is used for pipe forming and cooling. The vacuum shaping water tank is equipped with a vacuum shaping cooling system and a water circulation system. The stainless steel tank circulates water spray for cooling. The vacuum setting water tank is equipped with a back and forth moving device and a left-right, high-low adjusting manual device.
5. The cutting machine is controlled by the travel switch, automatically cuts according to the required length, and delays turning over the rack for flow production. The cutting machine completes the whole cutting process under the instruction of the fixed length switch signal. During the cutting process, the cutting process is synchronized with the pipe operation. The cutting process is electrically and pneumatically driven. The cutting machine is equipped with a vacuum device to suck out the cutting debris and recover it in time.
6. The material transfer action of the material transfer rack is controlled by the air cylinder through the air duct. When the pipe is cut by the cutting saw, a limit device is set. After the pipeline continues to be transported after the delay, the cylinder enters the working state to realize the material turnover action and achieve the purpose of unloading. After unloading, it will automatically reset after a delay of several seconds and wait for the next cycle.
