Yongte 90-315mm PVC Drain Pipe Extrusion Line is an equipment production line for producing PVC drain pipes with diameter of 90-315mm.
Yongte PVC drain pipe extrusion line is an equipment production line for producing PVC drain pipes. The following are some of its common features and components:
The mixed raw materials are conveyed to the hopper of the extruder through a conveying device (such as a screw conveyor or a pneumatic conveying system) to provide a continuous supply of raw materials for the extrusion process.
- Screw structure: A conical twin-screw extruder is used. This type of extruder has a strong plasticizing ability and extrusion efficiency. The screw is divided into a feeding section, a compression section (melting section) and a metering section (homogenizing section). The feeding section is responsible for conveying the raw materials into the barrel, the compression section compresses and heats the raw materials to gradually melt them, and the metering section further homogenizes the molten materials to ensure uniform quality of the extruded materials.
- Heating system: Equipped with advanced heating devices, such as electric heating coils or thermal oil heating systems, the barrel temperature can be accurately controlled to melt the PVC raw materials at a suitable temperature. Different raw materials and production processes have different temperature requirements, so the temperature control accuracy of the heating system is an important factor affecting the quality of the pipe.
- Drive system: It is composed of energy-saving and power-saving servo motors and hard-tooth reducers to provide power for the rotation of the screw. The performance of the drive system directly affects the extrusion speed and stability of the extruder. The servo motor and servo controller speed regulation technology can flexibly adjust the extrusion speed according to production needs.
- Mold design: The extrusion die is a key component that determines the shape and size of the PVC drain pipe. According to different pipe diameters and wall thickness requirements, the corresponding mold structure is designed. The flow channel design of the die should be reasonable to ensure that the material flows evenly during the extrusion process and avoid problems such as uneven wall thickness and eccentricity.
- Die material: High-quality alloy steel or special die steel materials are selected. After precision processing and heat treatment, they have good wear resistance, corrosion resistance and high temperature resistance to ensure the service life of the mold and the quality of the extruded pipe.
- Vacuum sizing box: The extruded PVC pipe enters the vacuum sizing box, and by forming a vacuum environment outside the pipe, the pipe is tightly attached to the inner wall of the sizing sleeve under the action of negative pressure, thereby achieving the shaping of the pipe. The vacuum sizing box is equipped with a vacuum system and a water circulation system, a stainless steel box, and circulating water spray cooling, which can quickly reduce the temperature of the pipe, solidify it and maintain a certain shape and size.
- Sizing sleeve: The inner diameter and shape of the sizing sleeve match the outer diameter and shape of the pipe, and its dimensional accuracy directly affects the dimensional accuracy of the outer diameter of the pipe. The sizing sleeve is usually made of materials such as copper or stainless steel, which has good thermal conductivity and wear resistance.
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- Cooling water tank: The pipe after vacuum shaping enters the cooling water tank for further cooling and solidification. The length and cooling method of the cooling water tank are designed according to the production speed and the specifications of the pipe. Generally, water cooling is used to ensure that the pipe can be fully cooled and improve the strength and dimensional stability of the pipe.
- Cooling water temperature control: Equipped with a water temperature control system, it can accurately control the water temperature of the cooling water tank to avoid the water temperature being too high or too low affecting the quality of the pipe. For example, when the temperature is high in summer, the cooling water temperature needs to be lowered to ensure the cooling effect of the pipe.
- Traction machine: It is used to continuously and automatically lead the cooled and hardened pipe out of the die head. The traction speed of the traction machine should match the extrusion speed of the extruder to ensure the continuous and stable production process of the pipe. The traction machine usually adopts belt traction or crawler traction, which has a large traction force and good traction stability.
- Traction speed control: The variable frequency speed regulation technology is adopted, and the traction speed can be flexibly adjusted according to production needs, thereby controlling the wall thickness and outer diameter of the pipe. At the same time, the traction machine is also equipped with a tension control system to ensure that the pipe will not be deformed or damaged by excessive tension during the traction process.
- Cutting machine: Automatically cut the continuously extruded pipe according to the set length requirements. The cutting machine generally adopts saw blade cutting or planetary cutting, which has the advantages of high cutting accuracy and fast cutting speed. The cutting system is also equipped with a length measuring device and a control system, which can accurately control the cutting length and ensure the length accuracy of the pipe.
- Turning rack: The cut pipe is unloaded and collected through the turning rack. The turning action is realized by the cylinder through the air circuit control. The turning rack is equipped with a limit device. When the cutting saw cuts the pipe, the pipe continues to be transported. After a delay, the cylinder starts working to realize the turning action and achieve the purpose of unloading.
- Electrical control: Use advanced PLC control system or industrial computer control system to centrally control and monitor various equipment of the extrusion line. Operators can input production parameters such as extrusion speed, traction speed, temperature, etc. through the control panel or touch screen, and monitor the operating status and production data of the equipment in real time, so as to adjust the production parameters in time to ensure the stability of the production process and the quality of the pipe.
- Fault alarm: The control system has a fault alarm function. When the equipment fails or an abnormal situation occurs, it can promptly send out an alarm signal and display the fault information so that the operator can troubleshoot the fault in time, reducing equipment downtime and production losses.
