Composite sandwich panel production line

The composite sandwich panel production line is a complete equipment system used for continuous production of "sandwich" structural panels. It uses an automated process to composite the upper and lower metal panels with the functional core material of the middle layer into a sturdy whole under high temperature and high pressure.

Main equipment composition of the production line (according to the process flow)

The entire production line is a precision linkage combination of the following equipment:

1. Open book system

Equipment: Upper/lower panel unwinding machine (usually double ended unwinding with automatic switching function).

Function: To carry and smoothly unfold metal coils (such as color steel plates, aluminum plates, etc.). Equipped with hydraulic feeding trolley and clamping leveling machine to ensure smooth feeding of the sheet metal.

2. Panel pre-processing system

Equipment: Forming machine (also known as embossing machine).

Function: Use a roller to press out shallow ripples or reinforcing bars on a flat panel. This not only enhances the rigidity and three-dimensional feel of the board, but also facilitates the adhesion of the adhesive.

3. Gluing system (key equipment)

Equipment: Automatic double-sided adhesive coating machine.

Function: Spray or roll apply liquid adhesive (such as polyurethane adhesive, epoxy resin adhesive) accurately and uniformly on the inner side of the upper and lower metal panels.

Key: The control of the adhesive amount must be precise and uniform, which is the core to ensure a firm and non delamination bond between the panel and the core material.

4. Core material supply system

Equipment: varies depending on the core material.

For rock wool/glass wool: equipped with a cotton laying platform and conveyor belt, the cut cotton felt is smoothly and centrally fed between two layers of panels.

For polyurethane: This is the most complex system, including high-pressure foaming machines, raw material storage tanks, and mixing heads. It precisely mixes black material (isocyanate) and white material (polyether polyol) under high pressure and evenly injects them into the cavity of the two-layer panel.

5. Composite and curing system (heart of production line)

Equipment: Double belt laminating machine.

Function: This is the most core and largest part of the production line.

Structure: A long heating box with two huge circulating steel strips inside.

Process: Close the "upper panel core material lower panel" preliminarily and send it into the laminating machine. The upper and lower steel strips are clamped under hydraulic pressure, and at the same time, the adhesive is cured or the polyurethane foaming reaction is completed under the action of the heating plate.

Control parameters: Temperature, pressure, and operating speed are the three key process parameters that determine the quality of the finished product.

6. Fixed length cutting system

Equipment: Tracking automatic cutting saw (usually toothless or low toothed flying saw).

Function: During the continuous production of composite boards, the cutting saw moves synchronously with the board to perform dynamic cutting and achieve fixed length cutting. The incision is neat, without burrs, and does not damage the underlying board.

7. Finished product processing system

Equipment: board conveyor roller, automatic stacker crane, packaging platform.

Function: Transport finished boards to the stacking area, where they are automatically stacked neatly according to the set quantity by the stacker crane. Finally, they are automatically or manually packaged for easy transportation and storage.

8. Electronic Control System (Brain and Nerve)

Equipment: Industrial Computer (IPC)+Programmable Logic Controller (PLC)+Human Machine Interface (Touchscreen).

Function: To centrally control the operation of the entire production line. The operator can set all parameters (length, speed, temperature, pressure, formula, etc.) in the control room, and the system monitors the equipment status in real time. It has fault diagnosis and alarm functions to ensure efficient and stable production.