Automatic Production Line For Sandwich Panels

With the continuous increase of construction industrialization and demand for green building materials, the automated production line of sandwich panels has become the core equipment in the field of modern building materials manufacturing.

sandwich panel line

The continuous production line of polyurethane sandwich panels represents the advanced level of current sandwich panel production, and its core lies in achieving full process automation control from raw materials to finished products. A typical production line such as Qingdao Yishuanglin's system can produce various polyurethane fireproof insulation boards with surface layers of aluminum plates, color steel plates, non-woven fabrics, kraft paper or aluminum foil, with a maximum width of 1200mm and a length that can be customized according to customer needs.

The sandwich panel automated production line system consists of multiple precision units working together:

• Raw material processing system: including uncoiler, coil forming machine, and preheating roller conveyor, responsible for the preparation and pretreatment of substrates
  

• Foaming system: BLC (R) type low-pressure continuous foaming machine or PH (R/F) high-pressure foaming machine is used, equipped with resin material tank and curing agent material tank, and the raw material ratio is precisely controlled by a variable frequency motor driven metering pump
  

• Molding system: The core is a 24 meter long double track machine, with a heating temperature maintained at 60 ℃ to ensure that the polyurethane is fully foamed and cured between the upper and lower tracks
  

• Post processing system: including trimming device and fixed length follow-up saw cutting machine, to complete precise trimming and cutting of the board

The technological advantages of sandwich panel automation production line are mainly reflected in three aspects:

• Strong scalability: It can achieve fully automatic production of various sandwich panels by adding drying, palletizing, packaging and other units
  

• High control accuracy: An electrical control system designed with high-end technology, equipped with a programmable controller and touch screen interface
  

• Excellent product quality: The finished board has high flatness, uniform core density, and stable insulation and fire resistance performance

Featured process flow:

• Unwinding machine unfolds metal coil
  

• The embossing machine uses relief metal flower rollers to press various three-dimensional patterns
  

• The forming machine performs multi wheel folding processing
  

• Inject polyurethane and other insulation materials into the foaming machine
  

• The laminating machine completes the composite shaping process
  

• Cutting machine with fixed length for on-demand cutting

This type of product is widely used in the renovation of old buildings, villas, hotels and other scenarios, achieving the integration of insulation and decoration, greatly reducing the construction process and cycle.

A typical automation control system is divided into three main areas:

• Uncoiling area control: managing the unfolding, centering, and tension control of the substrate
  

• Dual belt forming machine area control: monitoring key parameters such as foaming temperature, pressure, and speed
  

• Cold board sawing area control: handling board cooling, cutting to length, and stacking

Intelligent control components typically consist of the following core components:

• Programmable Logic Controller (PLC): As the system brain, it coordinates the operation of various units
  

• Touchscreen human-machine interface: providing intuitive operation and parameter settings
  

• Variable frequency drive: precise control of motor speed, adjustment of production line speed
  

• Sensor network: Real time monitoring of production data such as temperature, pressure, position, etc

The safety system cannot be ignored, and emergency stop buttons are installed at all operating positions to ensure the safety of equipment and personnel. Through the comprehensive application of the above technologies, modern production lines have achieved control goals of high precision, high intelligence, and high speed.

The sandwich panels produced by automated production lines have been widely used in multiple fields due to their excellent performance:

• construction field
  External wall insulation system: improving building energy efficiency and reducing energy consumption
  Steel structure buildings: used for wall panels and roof panels to reduce building weight
  Interior wall decoration: combines aesthetics and sound insulation functions
  Cold storage construction: providing excellent insulation performance

• industrial applications
  Ventilation ducts: the ideal choice for central air conditioning systems
  Pipeline insulation: used for pipeline wrapping in industries such as petroleum and chemical
  Cleanroom: meets the high cleanliness requirements of industries such as electronics and pharmaceuticals

• Special purpose
  Mobile home: Quickly build temporary or semi permanent buildings
  Ship cabin: reduce weight while ensuring insulation and sound insulation
  Vehicle interior: used for RVs, special vehicles, etc

As an important equipment in the field of building materials manufacturing, the automated production line of sandwich panels directly determines the quality performance and market competition of the final product based on its technological level. With the advancement of the "dual carbon" goal and the increasing demand for building industrialization, efficient, intelligent, and environmentally friendly sandwich panel production lines will usher in a broader development space. In the future, through continuous technological innovation and process optimization, sandwich panels will inevitably replace traditional materials in more fields, providing better solutions for green buildings and energy-saving projects.

For enterprises planning to invest in sandwich panel production, it is recommended to focus on the automation level of the production line, energy consumption, product diversification capability, and the technical support level of suppliers to ensure investment return and market competition.