The PE pipe production line includes: feeding system, single screw extruder, PE pipe special mold, calibrator, cooling system, tractor, coiler, control system.
The extruder is one of the important core components of the pipe extrusion line. In the design of a single screw extruder, how to achieve high-speed extrusion of high-quality pipes at low processing temperatures is a key technology. In the screw design, the BM structure and the barrier structure are combined, and a special mixing section is added, which not only ensures the plasticizing effect of the tube blank, but also the material is in each area on the entire screw, and the melt pressure is lower. , The pressure is evenly distributed, and the shearing action is strictly controlled to obtain the ideal material temperature.
In the barrel design, a slotted barrel is used, and a specially designed feeding bushing with a structure is provided. The inner hole surface has multiple inclined grooves to ensure high-speed PE feeding. There is a special cooling design in the feeding section to realize the temperature control of the barrel feeding area and isolate it from the adjacent barrel high temperature area. Each section of the barrel has a temperature-controllable heating section, which adopts forced air cooling. The output of the extruder has a good linear relationship (to facilitate simultaneous adjustment of the traction speed). In order to achieve high-speed extrusion, the gearbox adopts high torque and low noise Gearbox and motor power are matched accordingly.
Calibrator device. The function of the calibrator is to ensure that the high-temperature parison extruded from the die gets a fixed geometric shape and size during the vitrification process, and to basically eliminate the deformation internal stress and thermal internal stress of the parison in the process, so as to obtain the relevant Quality standard products, it is the main process device in the plastic extrusion molding process.
Haul-off Unit: The haul-off unit is a necessary auxiliary device for continuous extrusion of plastic pipes. Its function is to provide a certain traction and traction speed to the preliminarily shaped PE from the nose, and overcome the friction generated during the cooling and shaping process , Lead the plastic pipe from the cooling setting device at a uniform speed. And by adjusting the traction speed to adjust the wall thickness of the PE pipe to obtain a pipe that meets the standard. Practice has proved that the tensile strength of plastic pipes produced without traction is obviously lower than that with traction, and the production can be increased when equipped with traction devices. The traction device requires the gripper to be able to meet the needs of supporting the processing of a variety of caliber pipe villages, and can be stepless and smoothly adjusted within a certain range. During the traction process, the traction speed must be stable. Because any irregular changes will form ripples on the surface of the product, which will affect the quality of the product, the traction clamping force should be moderate and adjustable, and there should be no slipping, jumping or vibration during the traction process to avoid permanent deformation of the pipe.
Plastic pipe extrusion machinery such as PE pipe production line, pp-r pipe production line, PE three-layer co-extrusion pipe production line manufactured by Jiangsu Xinrong Price Machinery Co., Ltd., are favored by customers at home and abroad with excellent quality and excellent after-sales service. Welcome to consult!