& nbsp; The three station fully automatic servo controlled centrifugal casting production line for cylinder liners is used for mass production of cylinder liners. The production line adopts an integrated structure of three main machines and multi station auxiliary machines, with three main machines arranged in parallel and controlled by frequency conversion and speed regulation. Three main machines share a set of auxiliary machines and pouring devices. The auxiliary machine is servo driven control, which completes the automatic control of the entire process of cleaning, spraying, pouring, cooling, pipe pulling, and component extraction of three centrifugal casting hosts. The high-speed and stable adjustable host, advanced multi stage and multi speed spraying technology, and real-time monitoring and adjustment of key process parameters throughout the entire casting process ensure the repetitive consistency of the casting process for each type of cylinder liner product, completely eliminating the influence of human factors on the casting process parameters, and fundamentally ensuring the stability of the internal quality of cylinder liner castings. This model has a small footprint, high production efficiency, and can achieve unmanned operation. It is very suitable for the continuous production of single variety and large batch cylinder liner blank castings. Machine features:The high-speed and smooth operation of the main engine - the smooth operation and rotational speed of the pipe mold are key factors affecting product quality. Therefore, there is a high requirement for the smoothness of the main engine operation. Under high-speed operation, the radial runout of the pipe mold is smaller, the wall thickness of the cylinder liner is more uniform, and the organizational performance is more stable.The main engine adopts a four wheel structure, and the bearing seat is made of cast iron, which has good shock absorption. The surface of the supporting roller is hardened and finely ground, using an AC stepless frequency control motor and a high-performance vector control frequency converter. The high-performance V-belt drives the rotation of the supporting roller, ensuring precise speed control of the pipe mold. The regenerative braking system ensures rapid stop of the pipe mold and improves production efficiency& nbsp; Accurate positioning control of auxiliary machine actions - cleaning, spraying, and pipe pulling mechanisms are centrally arranged on a movable platform. By changing the position of the mobile platform, the working positions of the cleaning, spraying, and pipe pulling auxiliary machines can be switched. Adopting servo positioning control method to control the action position and speed of spraying, pipe pulling, and moving platforms, achieving high-speed and accurate positioning of auxiliary equipment, meeting strict process requirements, while shortening action time and improving work efficiency& nbsp; Excellent spraying quality - The inner layer coating of the pipe mold can reduce the impact of metal liquid on the pipe mold, reduce the peak temperature of the pipe mold, and effectively extend the service life of the pipe mold. At the same time, it can increase the friction between the pipe mold and liquid metal, shorten the time required for pouring metal liquid to reach the rotation speed of the pipe mold, and make the casting easy to demould during pipe drawing.The movement of the spray rod is controlled by a servo system, which ensures smooth movement and adjustable position, ensuring the uniformity of the spray layer. The movement speed of the spray bar can be divided into three adjustable sections, and the distance and speed of each section can be adjusted. Combined with the rotational speed and spraying pressure of the pipe mold, it can meet the requirements of various complex spraying processes. Real time monitoring of pipe mold temperature and water spray cooling - mold temperature has a significant impact on the quality of cylinder liners. Especially the metallographic structure and hardness. If the mold temperature is too high, the wet coating is prone to detonation, the coating is uneven, the surface quality of the cylinder liner cannot be guaranteed, and the lifespan of the pipe mold is shortened; If the mold temperature is too low, the coating will not be completely dry during pouring, and bubbles will not easily precipitate before pouring. When high-temperature molten iron meets the wet coating that is not completely dry, it makes the cylinder liner prone to casting defects such as white mouth and air holes.Configure an infrared temperature measurement device to real-time detect the three temperature segments on the outer surface of the pipe mold, and display the three temperature segments on the human-machine interface. The cooling nozzle of the pipe mold is evenly arranged along the axial direction above the pipe mold. According to the set cooling time parameters, the outer wall of the pipe mold is sprayed with water for cooling during the pouring and solidification process of molten iron, so as to control the temperature of the pipe mold within the appropriate process range. Accurate end cover automatic loading and unloading mechanism - The mold end cover automatic loading and unloading mechanism adopts pneumatic mode, automatically and accurately completing the loading and unloading actions of the pipe mold end cover, truly achieving unmanned operation. Reliable pipe pulling mechanism - The pipe pulling mechanism adopts a servo+pneumatic control method, which can smoothly pull the cylinder liner casting out of the pipe mold. ● Automatic Casting Handling Mechanism - The casting handling mechanism adopts a servo+pneumatic control method, which can automatically and smoothly transport the extracted cylinder liner castings from the tube pulling position to the conveying roller table. Automatic pouring and precise weighing of molten iron - Automatic pouring is composed of pouring vehicles, tilting ladle, etc. The pouring truck can be divided into three main machines for pouring. The pouring speed of pouring ladle tilting can be adjusted. The pouring car is equipped with an automatic weighing device for pouring molten iron, ensuring the consistency of the weight of each batch of cylinder liners. The weight of ladle molten iron is displayed on a large screen and can be printed and recorded. Efficient, safe, stable, and flexible electrical automatic control system - The control system uses PLC as the control core and human-machine interface as the monitoring system to complete the entire process automatic control of the centrifugal casting machine and monitoring of the production process. The control system has comprehensive protection measures such as overcurrent and overload. The process parameters of the main machine, the working position and speed of each auxiliary machine, and other parameters can be set, adjusted, and stored on the human-machine interface, making the equipment flexible and suitable for the production process requirements of multiple types of cylinder liner castings within a certain range. Technical parameters: Serial numberParameter NameParameter valueCompanyoneOuter diameter of cast pipeΦ 70～Φ one hundredmmtwoCast pipe lengthone thousand and six hundredmmthreeDiameter of supporting rollerΦ 250X70mmfourOuter span of two supporting rollerseight hundred and sixtymmfiveRadial distance between two supporting rollersthree hundred and thirtymmsixHost spacingeight hundredmmsevenSpindle speed0~2000rpmeightMain variable frequency motor powerseven point fiveKw
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