PVC pipe production line is a new high-speed and energy-saving production line developed on the basis of the introduction of overseas technology by Qingdao Haoxing Plastics Machinery Co., Ltd. based on the actual situation in China combined with more than ten years of accumulated experience of our company. Easy to use and practical. The production line has a beautiful appearance, high degree of automation and stable and reliable production.
1) Mixing of raw materials: PVC stabilizers, plasticizers, antioxidants, and other auxiliary materials are added to the high-speed mixer in proportion to the process, and the material is heated to the set process temperature by friction with the machine. The material is reduced to 40-50 degrees by cold mixer; this can be added to the hopper of the extruder.
(2) Extruder part: The machine is equipped with a quantitative feeding device, so that the amount of extrusion and the amount of material can be matched to ensure stable extrusion of the product. Due to the characteristics of the conical screw, the feed section has a larger diameter, and the heat transfer area and shear speed of the material are relatively large, which is beneficial to the plasticization of the material, the diameter of the screw in the metering section is small, and the heat transfer area and the melt are reduced. The shear rate allows the melt to extrude at a lower temperature. When the screw rotates in the barrel, the PVC mixture is plasticized and pushed toward the head to achieve homogenization of compaction, melting, and mixing; and the purpose of exhausting and dehydrating is achieved. The feeding device and the screw driving device adopt frequency conversion speed regulation, which can realize synchronous speed regulation.
(3) Extrusion die part: After compacting, melting, mixing and homogenizing PVC, the follow-up material is pushed to the die head through the screw, and the extrusion die is a built-up part of the pipe forming.
(4) The styling water tank is used for the shaping and cooling of the pipe. The vacuum styling water tank is equipped with a vacuum system and a water circulation system for shaping and cooling, a stainless steel tank, and a circulating water spray cooling. The vacuum styling water tank is provided with a front and rear moving device and left and right. , height adjustment manual device.
(5) The haul-off machine is used to continuously and automatically cool the hardened pipe from the nose, with variable frequency speed regulation.
(6) Cutting machine: After the distance switch is controlled according to the required length, the automatic cutting is performed, and the flow is delayed and the flow is produced. The cutting machine uses the fixed-length switching signal as the instruction to complete the whole process of cutting, during the cutting process. The pipe runs in synchronism and the cutting process is done by electric and pneumatic drives.
(7) The Automatic stacker turning action is realized by pneumatic control through the air cylinder. The overturning frame is provided with a limiting device. After the cutting saw cuts the pipe, the pipe continues to be transported. After the delay, the cylinder enters the work and turns over. Material action, to achieve the purpose of unloading. After unloading, it will automatically reset after a delay of several seconds, waiting for the next cycle.