PVC Pipe Production Line Conical Twin Screw Extruder Speed Control System

The belling machine is combined with pipes extrusion production to manufacture the socket end of pipes with type of "U", "R" and "rectangular". The belling processing should be done inside the belling room with vacuum shaping inside core of belling mould and water cooling outside the pipe in order to get the precise socket.

The first step of pipe production is the preparation of raw material. Customers can mix the PVC powder with other additives by themselves. The mixture will be fed into extruder. The material will be plasticized in the extruder and then be extruded into the mould. The material is shaped by mould and goes out with the pipe looking. The pipe extruded from the mould is hot and soft. The pipe with unstable shape will be calibrated and cooled by vacuum sleeve in the vacuum calibration tank. And then the pipe goes into the cooling tank for a further cooling. Haul off unit stands next to the cooling tank and takes the pipe away from the extruder. According to the defined length, the pipe will be cut and then packed for transport.