Composition and Function of PVC Pipe Extrusion Production Line


Ningbo Fangli Technology Co., Ltd. is a mechanical equipment manufacturer with nearly 30 years’ experiences of plastic pipe extrusion equipment, new environmental protection and new materials equipment. Since its establishment Fangli has been developed based on user’s demands. Through continuous improvement, independent R&D on the core technology and digestion & absorption of advanced technology and other means, we have developed PVC pipe extrusion line, PP-R pipe extrusion line, PE water supply / gas pipe extrusion line, which was recommended by the Chinese Ministry of Construction to replace imported products. We have gained the title of “First-class Brand in Zhejiang Province”.


Here, we briefly introduce the composition and functions of PVC pipe extrusion production line as follows for your reference:


I. Raw material mixing: PVC stabilizer, plasticizer, antioxidant and other auxiliary materials are successively added into the high-speed mixer according to proportion and process. The materials are heated to the set process temperature through material and mechanical self friction, and then the materials are reduced to 40-50 ° C through the cold mixer; In this way, it can be added to the hopper of the extruder.


II. Extruder part: the machine is equipped with quantitative feeding device to match the extrusion amount with the feeding amount to ensure the stable extrusion of products. Due to the characteristics of conical parallel twin-screw, the material is extruded in C chamber, which reduces the material friction and shear rate, is conducive to the plasticization of PVC materials, and pushes the PVC mixture to the machine head after plasticization, so as to achieve compaction, melting and mixing homogenization; and achieve the purpose of exhaust and dehydration. The feeding device and screw drive device adopt frequency conversion speed regulation, which can realize synchronous speed regulation.


III. Extrusion die part: PVC after compaction, melting, mixing and homogenization, and the subsequent materials are pushed to the die through the screw. The extrusion die is a relevant part for pipe forming.


IV. The vacuum shaping water tank is used for shaping and cooling of pipes. The vacuum shaping water tank is equipped with vacuum system and water circulation system for shaping and cooling, stainless steel box, circulating water spray cooling, and the vacuum shaping water tank is equipped with front and rear moving devices and manual devices for left, right and high-low adjustment. And according to customer demand, it can realize vacuum frequency conversion and automatic adjustment of vacuum pressure to realize energy-saving function.


V. Haul-off: it is used to continuously and automatically lead the cooled and hardened pipes out of the machine head and adjust the speed with frequency conversion.


VI. Cutting machine: after being controlled by the travel switch according to the required length, it will automatically cut and delay the frame turnover to implement flow production. The cutting machine takes the fixed length switch signal as the command to complete the whole cutting process and keep pace with the pipe operation in the cutting process. The cutting process is driven by electric and pneumatic. The cutting machine is equipped with dust suction device to suck out the debris generated by cutting in time, And recycle. According to the requirements of different PVC pipe standards, corresponding cutting and chamfering devices are configured.


VII. Tip table: it is realized by the air cylinder through the air circuit control. It is erected with a limit device. When the cutting saw cuts off the pipe, the pipe continues to be transported. After the delay, the air cylinder enters the work to realize the turnover action and achieve the purpose of unloading. After unloading, it will automatically reset after a delay of several seconds and wait for the next cycle;


VIII. According to customer requirements, online or offline PVC pipe belling machine can be configured to realize pipe belling function.


If you need more information, Ningbo Fangli Technology Co., Ltd. welcomes you to contact for a detailed inquiry, we will provide you with professional technical guidance or equipment procurement suggestions.

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