Plastic granulator equipment in the manufacturing link of the whole process, will encounter a variety of common failures, such as: deformation, understand what is caused by this?
Due to the adverse influence of forming standards caused by residual stress, according to reduce the injection pressure, improve the mold temperature, so that the mold temperature to achieve symmetry, improve the temperature of epoxy resin, use the quenching method to remove the internal stress. Incorrect cooling method is also easy to cause uneven cooling, cooling time is not enough, can adjust the cooling method, increase the cooling time and other methods, as far as possible in the place close to the deformation of the cooling control loop. In view of the deformation problem caused by the forming folding, we must adjust the mold design scheme, pay attention to the product wall thickness is consistent, in the case of forced, according to the accurate measurement of the deformation of the product, and

The extruder production line can continuously produce plastic pipe. Because the pipe production is continuous, and the pipe has a fixed length stipulated by the standard, in order to ensure the standard length of the pipe, we need to use the auxiliary equipment such as cutting machine to cut the pipe in accordance with the required length. Different specifications of pipes will use different cutting machines, so how should we choose cutting machines? The cutting methods of pipes can be divided into two kinds: manual cutting and automatic cutting. When the diameter of the pipe is small (within 50mm pipe diameter), many manufacturers will use saws to cut by hand in many cases. But now in order to improve the production efficiency and ensure the length accuracy of the plastic pipe, the extruder production line is also equipped with automatic cutting machine. A cutting tool used in an extruder

(1) Raw material mixing: PVC stabilizer, plasticizer, antioxidant and other auxiliary materials are added into the high-speed mixer successively according to the proportion and process, and the material is heated to the set process temperature through the material and mechanical self-friction, and then the material is reduced to 40-50 degrees by cold mixing machine; This allows it to be added to the hopper of the extruder. (2) Extruder part: The machine is equipped with quantitative feeding device, so that the amount of extrusion and feeding can match, to ensure the stable extrusion of products. Due to the characteristics of the conical screw, the feeding section has a large diameter, the heat transfer area and shear speed of the material is relatively large, conducive to the plasticization of the material, the metering section screw diameter is small, reduce the heat transfer area and the shear speed of the melt, so that the melt can be extruded at a lower temperature. When the screw