Exterior Wall PU Sandwich Panel Machine

The exterior wall pu sandwich panel machine is a specialized production line for manufacturing insulation composite panels for buildings. By sandwiching polyurethane foam material between two layers of metal or non-metal panels, it forms composite panels with excellent insulation performance. The exterior wall polyurethane sandwich panel production line integrates multiple advanced technologies, enabling fully automated production from raw materials to finished products.

sandwich panel machine

The continuous exterior wall pu sandwich panel line usually consists of main components such as unwinding system, pretreatment system, forming system, foaming system, composite system, cutting system, stacking system, and automation control system, forming a complete production system.

Main equipment composition and functions

• Open book system
  Double unwinding machine configuration: Usually equipped with two unwinding machines, one for feeding the upper and lower metal panels, to achieve uninterrupted production
  Automatic correction device: ensures that the coil maintains the correct position when entering the production line
  Tension control system: Accurately control the tension of the coil to prevent deformation or stretching of the sheet

• Preprocessing system
  Cleaning unit: Remove oil stains and impurities from the surface of metal panels
  Chemical treatment unit: Improve the adhesion performance between the panel and polyurethane through chrome or zirconium treatment
  Drying system: using hot air circulation to thoroughly dry the treated panel

• Forming system
  Roll forming machine: Press flat metal plates into the desired waveform or plate shape
  Multi pass molding technology: reducing material stress through progressive deformation
  Quick mold changing device: can replace different plate molds in a short period of time

• Polyurethane foaming system
  High pressure foaming machine: Mix polyols and isocyanates in precise proportions
  Temperature control system: keep the raw materials within the optimal reaction temperature range
  Automatic measuring device: ensuring precise ratio of two components
  Mixing head: adopts self-cleaning design, can work continuously

• Composite system
  Double track press: synchronized operation of upper and lower tracks to control foam thickness
  Temperature control system: Control the foaming reaction rate through a heating plate
  Pressure regulating device: Ensure uniform density in all parts of the board

• Cutting system
  Flying saw cutting machine: high-speed sawing, smooth and burr free cutting edge
  Fixed length control system: laser ranging, accuracy up to ± 1mm
  Waste recycling device: automatic collection of cutting waste

• Stacking system
  Automatic sorting robot: automatically classify and stack according to specifications
  Buffer platform: Ensure neat stacking
  Packaging device: automatic winding packaging of finished products

Core technical features

• Automated control system
  PLC+touch screen control to achieve full process automation
  Real time monitoring and recording of production data
  Fault self diagnosis function

• Energy saving technology
  Thermal energy recovery system to reduce energy consumption
  Variable frequency drive technology saves energy
  Closed loop circulating water cooling system

• Precision control technology
  Accurate control of foaming volume, error<± 1.5%
  Thickness control accuracy of sheet metal ± 0.2mm
  Automatic compensation system eliminates cumulative errors

• Flexible Production Design
  Can produce boards of different thicknesses (30-200mm)
  Quickly switch between products of different widths (900-1200mm)
  Support multiple panel materials (galvanized sheet, aluminum sheet, stainless steel sheet, etc.)

As a key equipment for the production of energy-saving building materials, the technical level of the exterior wall pu sandwich panel machinery directly affects the quality and performance of the final product. With the continuous improvement of building energy-saving requirements, this type of equipment will continue to develop towards higher efficiency, intelligence, and environmental protection.