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Introduction to the Functions of a PVC Pipe Extrusion Line

Time：

2017-06-22

The plastic pipe extrusion line is used to produce plastic pipes and profiled sections in a variety of specifications. It primarily manufactures pipes with diverse diameters and wall thicknesses for agricultural water supply and drainage, building water supply and drainage, and cable‑laying applications. The line is suitable for producing pipes made from resin‑based materials such as PP, PE, PS, ABS, PVC, and PPC. Functional overview of the PVC pipe extrusion line: 1. Extruder section: Equipped with a metering feeder, this section ensures that the extrusion rate matches the feed rate, enabling stable production of finished products. 2. Vacuum sizing tank: Used for shaping and cooling the pipes, the vacuum sizing tank is fitted with a vacuum system that provides both shaping and cooling functions.

The plastic pipe extrusion line is designed for the production of plastic pipes and profiles in a wide range of specifications. It primarily manufactures pipes with various diameters and wall thicknesses for agricultural irrigation and drainage, building water supply and drainage, and cable‑laying applications. The line is suitable for producing pipes made from resin‑based materials such as PP, PE, PS, ABS, PVC, and PPC.

Introduction to the Functions of a PVC Pipe Extrusion Production Line

1. Extruder Section: The PVC pipe extrusion line is equipped with a metering feeder, ensuring that the extrusion rate matches the feed rate and enabling stable production of the finished product.

2. The vacuum shaping water tank is used for shaping and cooling tubular products. It is equipped with a vacuum system for shaping and cooling, as well as a water circulation system. The tank features a stainless steel body, with circulating water spray cooling. Additionally, it is fitted with a front-to-back traversing mechanism and manual adjustment devices for lateral and vertical positioning.

3. The traction machine is used to continuously and automatically draw the cooled, hardened pipe material from the die head of the PVC pipe extrusion line, with variable-frequency speed control.

4. Cutting saw: After being controlled by a limit switch according to the required length, it performs automatic cutting and then delays the rack‑turning operation. Implementing continuous production, the cutting saw uses a fixed‑length work‑switch signal as its command to complete the entire cutting process, maintaining synchronization with the pipe‑conveying system throughout. The cutting operation is driven by both electric and pneumatic actuators; the cutting saw…

It is equipped with a vacuum system that promptly removes and recovers the debris generated during cutting.

5. The material‑turning action of the material‑turning rack is controlled by a pneumatic cylinder via a pneumatic circuit. The rack is equipped with a limit switch: after the cutting saw has severed the pipe, the pipe continues to be conveyed; following a delay, the cylinder activates to perform the turning motion, thereby completing the unloading process. After unloading, the system automatically resets after a few seconds of delay, awaiting the next cycle.

6. Extrusion die section: The PVC, which has been compacted, melted, and homogenized through mixing, is conveyed by the screw to the die; the extrusion die is a critical component in pipe forming.

7. Raw Material Mixing: PVC stabilizers, plasticizers, antioxidants, and other auxiliary additives are sequentially added to a high-speed mixer in accordance with specified proportions and processing sequences. The friction between the materials and the mixing equipment raises the temperature of the blend to the set process temperature.