Wall PU Sandwich Panel Machine

The wall polyurethane sandwich panel machine is a professional equipment used in the modern construction industry to produce high-efficiency and energy-saving building panels. It mainly consists of an unwinding system, a forming system, a foaming system, a composite system, a cutting system, and a stacking system. This automated sandwich panel production line can continuously composite color steel plates with polyurethane insulation materials to produce building sandwich panels with excellent insulation performance.

sandwich panel machine

According to the degree of automation, the wall pu sandwich panel line can be divided into three types: fully automatic, semi-automatic, and manual. The fully automatic polyurethane sandwich panel production line adopts a PLC intelligent control system to achieve fully automated production from raw materials to finished products, with a daily output of up to 5000-8000 square meters; The semi-automatic polyurethane sandwich panel production line requires some manual operation, with a daily output of about 3000-5000 square meters; Manual production lines are mainly used for small batch production or processing of special specification products.

Core equipment composition and functions

• Uncoiler and leveling machine
  The uncoiler adopts a hydraulic tensioning design and is equipped with an automatic centering device, which can carry 3-5 tons of steel coils to ensure smooth material transportation. The leveling machine consists of 7-9 sets of leveling rollers, which eliminate stress and deformation caused by the transportation and storage of steel coils, ensuring that the flatness error of the substrate does not exceed 0.5mm/m.

• Forming machine system
  The forming machine adopts multi pass progressive roll forming technology, usually consisting of 20-30 forming rollers, which gradually shape the flat plate into the desired cross-sectional shape through precise calculation of three-dimensional curves. The latest model is driven by servo motors, with a molding speed of 15-20m/min, a thickness adjustment range of 0.3-1.2mm, and a width adjustment range of 800-1200mm.

• Polyurethane foaming system
  The high-pressure foaming machine is the core equipment of the production line, which adopts imported metering pumps (accuracy ± 0.5%) and static mixing heads. The proportioning system precisely controls the mixing ratio of isocyanates (ISO) and polyols (POLY) (usually 1:1-1:1.2). The foaming temperature is controlled at 20-25 ℃ and the pressure is 15-20MPa to ensure that the density of foam is uniform (30-50kg/m ³) and the thermal conductivity is as low as 0.018-0.024W/(m · K).

• Composite system
  The dual track composite machine adopts a synchronous upper and lower conveying design, with an adjustable pressure range of 0.1-0.3 MPa. It accelerates the curing of polyurethane through an infrared heating device (temperature control accuracy ± 2 ℃). The length of the composite zone is usually 12-18 meters to ensure that the foam fully reacts and solidifies, and the bonding strength is ≥ 0.15 MPa.

• CNC cutting system
  The flying saw cutting machine adopts servo drive, with a cutting accuracy of ± 1mm, adjustable cutting angle (0-45 °), and a maximum cutting thickness of up to 200mm. Some high-end equipment is equipped with a visual recognition system to achieve automatic recognition and precise cutting of patterns and hole positions.

Equipment selection guide

When choosing a wall pu sandwich panel manufacturing machine, the following key factors should be considered:

• Production demand: Select equipment specifications based on expected annual output. Small enterprises can choose semi-automatic production lines with a daily output of about 3000 square meters, while large production enterprises are recommended to choose fully automatic production lines with a daily output of over 6000 square meters.

• Product specifications: If it is necessary to produce ultra thick (>150mm) or special shaped (curved, irregular) sheets, equipment equipped with high-pressure foaming system and adjustable forming molds should be selected.

• Automation level: It is recommended to choose equipment with high automation level in areas with high labor costs. Although the initial investment increases by 30-50%, it can save more than 40% of labor costs in the long run.

• Energy efficiency ratio: Although the new energy-saving equipment is 15-20% more expensive, its energy consumption is reduced by 25-30%. Calculated based on a 10-year usage cycle, it can save about 500000 to 800000 yuan in electricity bills.

• After sales service: Consider the supplier's technical support capabilities, including equipment installation and commissioning, operation training, spare parts supply, and fault response time.

With the continuous improvement of building energy-saving requirements and the promotion of the "dual carbon" goal, the wall sandwich panel production machines are developing towards higher efficiency, intelligence, and environmental protection, providing high-quality wall material solutions for modern green buildings.