Working Principle Of PU Sandwich Panel Machine

The working principle of pu sandwich panel machine is a complex process involving raw material mixing, pouring, foaming and curing, and subsequent processing. Through advanced equipment and automated control systems, product quality and production efficiency are ensured.

sandwich panel machine

Raw material mixing and infusion

Raw material preparation: The production of pu sandwich panels requires the use of polyurethane raw material as the core material, and the upper and lower layer surface materials can be selected from color steel plates, cement cloth, aluminum foil, non-woven fabrics, and other materials.
Mixing and infusion: The polyurethane raw material is fed into the mixing head in a certain proportion through the metering pump of the infusion machine for mixing. After mixing evenly, pour it evenly onto the bottom surface material of the sandwich panel using a pouring machine.

Foam curing

• Foaming process: After pouring, the polyurethane solution begins to foam on the bottom surface material. During this process, the temperature control system and reliable foaming process of the foaming machine ensure that the foam of the board is uniform, dense, and firmly adhered to the bottom surface material.
  

• Laminated curing: At the same time, the upper surface material is covered with foamed polyurethane and transported together to the laminating machine. Polyurethane continues to foam and solidify between the upper and lower chain plates of the laminating machine. The chain plate of the laminating machine is refined from high-quality aluminum alloy, and the speed is variable frequency and infinitely adjustable, ensuring the uniform solidification of the plate.

Subsequent processing

• Edge trimming and cutting: The cured sandwich panel is processed on the production line by two edge trimming machines to remove burrs, and then automatically tracked and cut into the required length of product by the cutting machine. Both trimming and cutting processes are equipped with bag vacuum cleaners to remove debris generated.
  

• Packaging and Stacking: Finally, the cut polyurethane sandwich panels are transported through a fast conveyor roller, automatic flipping, palletizing, and packaging system to complete the product packaging and stacking. This process ensures that the product is undamaged during production and transportation.

Automated control system

The pu sandwich panel machine is equipped with advanced automation control systems, such as PLC human-machine control. These systems make it easy to adjust the parameters of the entire production line, effectively ensuring stable and efficient operation of the production line. Meanwhile, the user-friendly interface facilitates monitoring and operation by operators.