Plastic pipe production line Plastic extruder is mainly used to produce plastic PVC pipes with various pipe diameters and wall thicknesses in agricultural water supply and drainage, building water supply and drainage, cable laying, etc. This unit is made of conical twin screw extruder and vacuum setting. Box, tractor, cutting machine, turning frame and so on. Screw extruder and traction machine adopt inflow frequency conversion speed regulation device, vacuum pump and traction motor both use high-quality products. There are two types of traction: two, three, four and six.
In the production process, because PVC pipes are heat-sensitive materials, even if heat stabilizers are added, they can only increase the decomposition temperature and extend the stabilization time without decomposition. This requires that the molding processing temperature of PVC pipes should be strictly controlled. Therefore, the extrusion temperature should be determined according to factors such as the formula, the characteristics of the extruder, the structure of the head, the screw speed, the position of the temperature measurement point, the error of the temperature measurement instrument, and the depth of the temperature measurement point.
The traction rate of the plastic pipe production line directly affects the output of pipe production, and at the same time affects the wall thickness of the pipe. The unstable traction rate will cause the diameter of the PVC pipe to appear larger and smaller. The pulling speed should be closely matched with the extrusion rate of the pipe. In normal production, the traction rate should be slightly faster than the extrusion line speed by 1% to 10%. The slower the traction rate, the thicker the pipe wall, the faster the traction rate, and the thinner the pipe wall. It will also increase the longitudinal shrinkage of the PVC pipe and increase the internal stress, which will affect the pipe size, qualification rate and use effect. To adjust the traction rate during production, you can use the following simple method to place the extruded PVC pipe in the traction track, but the track does not clamp the pipe. Observe the difference between the line speed of the track and the PVC pipe. If the traction rate is slower than the extrusion rate, adjust and speed Until the wall thickness meets the requirements