Functions Of PVC Pipe Production Line

(1) Raw material mixing: PVC stabilizer, plasticizer, antioxidant and other auxiliary materials are added to the high-speed mixer in proportion and process. The material is heated to the set process temperature through self-friction between the material and the machine, and then the material is cooled to 40-50 degrees through the cold mixer; then it can be added to the hopper of the extruder.
(2) Extruder part: This machine is equipped with a quantitative feeding device to match the extrusion amount with the feeding amount to ensure stable extrusion of the product. Due to the characteristics of the conical screw, the feeding section has a larger diameter, which has a larger heat transfer area and shear rate for the material, which is conducive to the plasticization of the material. The diameter of the screw in the metering section is small, which reduces the heat transfer area and shear rate for the melt, so that the melt can be extruded at a lower temperature. When the screw rotates in the barrel, the PVC mixture is plasticized and pushed to the head, thereby achieving compaction, melting, mixing and homogenization; and achieving the purpose of exhaust and dehydration. The feeding device and the screw drive device adopt frequency conversion speed regulation, which can realize synchronous speed regulation.
(3) Extrusion die head: The PVC that has been compacted, melted, mixed and homogenized is pushed to the die head by the screw. The extrusion die head is a key component for pipe forming.
(4) The vacuum shaping water tank is used for shaping and cooling of pipes. The vacuum shaping water tank is equipped with a vacuum system and a water circulation system for shaping and cooling. The stainless steel box body is cooled by circulating water spraying. The vacuum shaping water tank is equipped with a forward and backward moving device and a left and right, high and low adjustment manual device.
(5) The traction machine is used to continuously and automatically lead the cooled and hardened pipe out of the machine head, and the speed is adjusted by frequency conversion.
(6) Cutting machine: After being controlled by the travel switch according to the required length, it automatically cuts and delays the turning of the frame to implement flow production. The cutting machine uses the fixed length switch signal as the instruction to complete the entire cutting process. During the cutting process, it keeps synchronization with the pipe operation. The cutting process is completed by electric and pneumatic drives. The cutting machine is equipped with a dust suction device to suck out the debris generated by cutting in time and recycle it.
(7) The turning action of the turning rack is realized by the cylinder through the air circuit control. The turning rack is equipped with a limit device. When the cutting saw cuts the pipe, the pipe continues to be transported. After a delay, the cylinder starts working to realize the turning 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.