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Introduction to the Functions of a PVC Pipe Extrusion Production Line

Time：

2017-06-22

The plastic pipe production line is used to manufacture various types of plastic pipes and profiled extrusions in multiple specifications. It primarily produces 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. Introduction to the functions of a PVC pipe extrusion production line: 1. The haul-off unit continuously and automatically pulls the cooled, hardened pipes out from the die head of the PVC pipe extrusion line, with variable-frequency speed control. 2. Extrusion die head section: After being compacted, melted, and thoroughly mixed and homogenized, the PVC material is conveyed by the screw toward the die head; the extrusion die head shapes the pipe into its final form.

The plastic pipe production line is used to manufacture a wide range of plastic pipes and profiled extrusions in various specifications. It primarily produces 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.

Introduction to the Functions of a PVC Pipe Extrusion Production Line

1. 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.

2. 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.

3. The vacuum shaping water tank is used for shaping and cooling pipe 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, and is fitted with a front-to-back traversing mechanism along with manual adjustment devices for lateral positioning and vertical height.

4. 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 operation, thereby completing the unloading process. After unloading, the system automatically resets after a few seconds of delay, awaiting the next cycle.

5. 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.

6. Cutting Saw: After the limit switch controls the cut to the required length, the saw performs automatic cutting and, following a delay, flips the pipe rack, enabling continuous production. The cutting saw uses the fixed-length limit switch signal as its command to complete the entire cutting process. During cutting, it remains synchronized with the pipe‑conveying system, and the cutting operation is driven by both electric and pneumatic actuators.

The cutting saw is equipped with a dust extraction system that promptly removes and recovers the debris generated during cutting.

7. 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.