High Quality PU Sandwich Panel Machine Design

The design of high-quality pu sandwich panel machines is a comprehensive project that involves multiple aspects such as mechanical structure, control system, production process, etc.

sandwich panel machine

Mechanical structure design

• Open book system:
  The design should adopt an unwinding machine with manual neutralization and tension control function to ensure smooth conveying and precise positioning of the coil.
  The unwinding mechanism shaft should tighten the coil material through inclined movement and adjust the coil center by a hydraulic cylinder to adapt to different specifications of coils.

• Forming and preheating system:
  The molding machine system should be designed accurately and stably to ensure that the shape and size of the sandwich panel meet the requirements.
  Preheating roller tracks or steel plate preheating furnaces should be used to preheat metal coils in order to improve the adhesion and forming effect during polyurethane foaming.

• Foaming system:
  The foaming machine should be a low-pressure continuous foaming machine or a high-pressure foaming machine, and the appropriate foaming type should be selected according to production needs.
  The metering pump of the foaming machine should be driven by an independent variable frequency motor, and the output flow rate should be controlled by changing the speed to ensure that each component is mixed evenly in proportion.

• Dual track system:
  The double track machine should be designed to be long enough (such as 24m) to ensure sufficient foaming and shaping of polyurethane.
  The heating temperature of the dual track machine should be adjustable and maintained within an appropriate range (such as 60 ℃) to ensure the consistency of the core material foaming.
  The frame and head of the double track machine should be welded with high-strength materials to ensure the rigidity and stability of the equipment.

• Cutting and cooling system:
  The cutting system should use high-precision sawing machines to ensure that the cutting surface of the board is flat and the dimensions are accurate.
  The cooling system should adopt effective cooling methods (such as horizontal cooling system) to quickly reduce the temperature of the board and shape it.

Control system design

• Automated control:
  The control system should use advanced components such as programmable logic controllers (PLCs) and touch screens to achieve automated production on the production line.
  The control system should be divided into multiple parts such as unwinding area control, double belt forming machine area control, and cold plate sawing area control to ensure coordinated operation of each area.

• Monitoring and Protection:
  Emergency stop buttons should be installed at each operating position of the production line to ensure the safety of equipment and personnel in emergency situations.
  The control system should have fault alarm and diagnostic functions to detect and solve problems in a timely manner.

Production process optimization

• Raw material selection:
  High quality polyurethane raw materials and skin materials (such as color steel plates, aluminum foil, etc.) should be selected to ensure the performance and quality of sandwich panels.

• Process parameter adjustment:
  Adjust the process parameters of the foaming machine (such as temperature, pressure, flow rate, etc.) according to production needs and raw material characteristics to achieve the best foaming effect.
  Adjust the heating temperature and operating speed of the dual track machine to adapt to the production of different specifications and thicknesses of sheet metal.

• Quality Inspection and Control:
  Strict quality inspection and control should be carried out at every stage of the production process to ensure that the flatness, core density, bonding strength, and other indicators of the board meet the requirements.

The design of high-quality pu sandwich panel machines requires comprehensive consideration of multiple aspects such as mechanical structure, control system, and production process. Through precise design and optimization, polyurethane sandwich panels with excellent performance and reliable quality can be produced to meet a wide range of market demands.