Plastic PP/PPH (polypropylene/high impact polypropylene) pipe production line is a set of integrated raw material pretreatment, melt extrusion, mold setting, cooling cutting, quality inspection and other processes of automated production equipment. Its main components include:
Raw material pretreatment system: responsible for the drying, proportioning and transportation of raw materials.
Extruder: Core equipment that melts and extrudes PP/PPH raw materials into tubes.
Die and head: Determine the section shape and size of the pipe.
Vacuum setting and cooling system: to ensure rapid cooling and setting of the pipe and maintain dimensional stability.
Traction and cutting device: continuous traction of the cooled pipe and automatic cutting according to the set length.
Quality inspection system: Quality inspection of the pipe after cutting.
Collection and stacking system: Sorting qualified pipes for subsequent treatment.
Control system: Integrated PLC and HMI to realize automatic control and monitoring of the production process.
Pretreatment of raw materials is a key step to ensure the quality of pipes. PP/PPH raw materials need to be dried to remove water and avoid bubbles during extrusion. At the same time, the raw materials need to be mixed evenly in proportion to ensure the stable performance of the pipe. The pre-treated raw material is fed to the extruder through the feeding system.
Extruder is the core equipment of pipe production line. In the extruder, the PP/PPH raw material is heated and melted and extruded into tubes through a mold pushed by a screw. The temperature, pressure, screw speed and other parameters of the extruder need to be adjusted according to the characteristics of the raw material and the specifications of the pipe to ensure that the melting state of the pipe and the extrusion speed are stable.
The mold is the key component to determine the shape and size of the pipe section. After the molten PP/PPH material is extruded through the mold, it enters the setting device immediately. The setting device makes the tube close to the inner wall of the setting sleeve through vacuum or air pressure to achieve accurate setting. The size and shape of the shaping sleeve should be designed according to the specifications of the pipe to ensure the roundness and wall thickness of the pipe.
The shaped pipe enters the cooling system and is quickly cooled by water bath or air cooling to fix the shape and size. The cooled pipe is continuously pulled by the traction device, and when the set length is reached, the cutting device automatically cuts the pipe. The cut pipe should be trimmed to remove burrs and end face irregularities.
After cutting, the pipe should go through the quality inspection process, including appearance inspection, size measurement, performance testing, etc. The appearance inspection mainly checks whether the surface of the pipe is smooth, no cracks, no bubbles and other defects; The size measurement mainly checks whether the diameter, wall thickness and length of the pipe meet the specifications; Performance test mainly tests the compressive strength, impact strength and other mechanical properties of the pipe.
With the development of science and technology, intelligent production has become an important trend of pipe production lines. Through the integration of PLC and HMI control system, the automatic control and monitoring of the production process are realized. At the same time, the use of the Internet of Things, big data, artificial intelligence and other technologies to achieve real-time collection, analysis and optimization of production data, improve production efficiency and product quality. In the future, intelligent production will become the mainstream development direction of pipe production lines.
Environmental protection and sustainable development are important considerations in pipe production line design. PP/PPH raw materials are recyclable and meet environmental requirements. At the same time, in the design and manufacturing process of the production line, it is necessary to pay attention to energy conservation and emission reduction, reduce energy consumption and waste emissions. In addition, by optimizing the production process and formula, the weatherability and corrosion resistance of the pipe can be improved, the service life can be extended, and the resource consumption and environmental pollution can be reduced. In the future, environmental protection and sustainable development will become an important direction of pipe production line design and manufacturing.
In summary, the plastic PP/PPH pipe production line has shown a wide range of application prospects in many fields with its high efficiency, stability and environmental protection characteristics. With the continuous improvement of intelligent production and environmental protection requirements, our pipe production line will be more intelligent and green in the future, to provide you with more quality products and services.