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Detailed explanation of PVC downspout production equipment (production process):
(1) Mixing of raw materials: adding PVC stabilizers, plasticizers, antioxidants and other auxiliary materials into the high-speed mixer according to the proportions and processes. The materials are heated to the set process temperature through self-friction between the materials and the machine. The material is reduced to 40-50 degrees by the cold mixer; in this way, 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 volume with the feeding volume and ensure stable extrusion of the product. Due to the characteristics of the conical screw, the feeding section has a larger diameter, and the heat transfer area and shear speed of the material are relatively large, which is conducive to the plasticization of the material. The small diameter of the screw in the metering section reduces the heat transfer area and the melt. The shear speed enables the melt to be extruded at a lower temperature. When the screw rotates in the barrel, it plasticizes the PVC mixture and pushes it to the machine head, so as to achieve compaction, melting, mixing and homogenization; and to achieve the purpose of exhaust and dehydration. The feeding device and screw drive device adopt frequency conversion speed regulation, which can realize synchronous speed regulation.
(3) Extrusion die head part: the PVC that is compacted, melted, mixed and homogenized, and the subsequent materials are pushed to the die head by the screw. The extrusion die head is a key part of pipe forming.
(4) The vacuum shaped water tank is used for the shaping and cooling of pipes. The vacuum shaped water tank is equipped with a vacuum system and a water circulation system for shaping and cooling. The stainless steel box body, circulating water spray cooling, and the vacuum shaped water tank are equipped with forward and backward moving devices and Manual device for adjusting left and right and height.
(5) The traction machine is used to continuously and automatically lead the cooled and hardened pipe from the machine head, with frequency conversion and speed regulation.
common problem :
1. Why choose We We are Qingdao Zhongrui Plastic Machinery Co., Ltd. Machine quality and customer satisfaction are our pursuits. I believe we have the strength to provide you with high-quality machines and perfect services. 2. What services do we provide? Pre-sale communication → design plan, signature confirmation → Customized production → test machine before shipment → packaging
Shipment → Engineer Installation → Operator Training → Technical Support 3. Payment terms: 30% should be paid by T/T as down payment, the balance (70% of the total) should be paid by T/T or irrevocable L/C by payment (at sight) before delivery. 4. Delivery conditions: 4.1 D delivery conditions: FOB Qingdao port or CIF port of destination. 4.2 Delivery period: 30- _ _ _60 working days after receiving the advance payment, the seller should notify the buyer to inspect the goods, and the seller should complete the packaging of the goods and prepare for delivery within 15 working days after receiving the full payment.