The line is a kind of specialized equipment used for producing color-steel-sided sandwich panels with the middle layer of anti-combustion polyurethane, polyisocyanurate or phenolic foam. The thickness of the produced sandwich panel ranges from 30 to 150 mm, the width between 700 and 1000 mm and the length on request. The production line is mainly applied to make wall and roof panels of steel structure buildings, which can also make various other insulation panels if replacing facing sheet. Its operation principle is as follows: Rigid polyfoam raw materials, according to a certain blending ratio, are delivered into mixing head to agitate through metering pump unit on the injection machine and then uniformly injected onto the bottom facing sheet of sandwich panel. After the injection, the bottom facing sheet shall move toward the double-belt conveyors together with panel’s top facing sheet. Between the two conveyors, injected raw material is foamed and hardened into shape. At the end of the line, the formed sandwich panel is cut into preset length by an automatic tracking cutter.
1. Hydraulic decoiler 2. Upper and lower forming machine 3. Pre-heating table 4. Heating oven 5. Reaction injection machine
6. Side chemical sealing installation 7. Double-belt laminator 8. Hot-air circulator 9. Cross-cutter 10. Hydraulic clipper & film coverer
11. Mobile injector
1. Hydraulic decoiler: Used for decoiling and hydraulically expanding steel coils with max.weight of 5T or 10T (for optional use).
2. Upper and lower forming machines: With a plate-like structure welded by steel frames and gear transmission system,forming profile to be custom-made.
3. Pre-heating table: To heat to 40℃, temperature adjustable.
4. Pre-heating oven: An oven is designed to acheive up to 80℃, temperature adjustable.
5. Reaction Injection machine: To meter and mix two different liquid components in a given mixing ratio required by technical process. A chiller and a temperature controller are equipped to meet the temperature requirements of foaming liquid chemicals. We have both high and low pressure machines for user's optional use.
6. . Side chemical sealing installation: To prevent foaming chemicals from leaking out at panel's sides. Its running speed can be matched up with that of laminator. Sealing width of panel is adjustable.
7. Double-belt laminator: Options of laminator's length: 12m, 18m, 24m, 30m or 36m; speed range: 3 to 8m/min. Materials of laminator's conveyor plank can be either steel or aluminum as per client's choice.
8. Hot-air circulator: Used to heat up laminator's belt conveyors in an optional design of air circulation route which can heat to 60℃ from 20℃ in one hour. There are both furnace and electricty heaters equipped on the line while the funace can either use fuel oil or steam as heating energy depending on customer's choice.
9. Cross-cutter: With both bandsaw and disc saw machines for optional use. (Pls refer to the introduction on cutter series under matching equipment ).
10. Hydraulic clipper: For hydraulically cutting steel or aluminum sheet after the decoiling process. Its cutter with the max. Cutting thickness of 1mm and the hydraulic decoiler share one hydraulic station.
11. Mobile injector: The user can choose either a servo motor or servo motor with a crank as the driving system.
Optional equipment
1. Flipper: To flip finished panels over onto a powered roller conveyor ready for the next packing process.
2. Cooling system: To be put at the end of sandwich panel production line for the purpose of cooling sandwich panels. It can flip and load 4 pcs of 2.4m panels at one time. Two such systems can load about 120 pcs of sandwich panels. Distance between the two shafts of the system is 6m and chain pitch is 200mm.
3. Lifting and parallel moving installation with vacuum suckers: To move panels from ready-stacking position onto a a powered roller conveyor for the next process, whole operation automatically controlled by PLC.
4. Packing machine of winding type: For packing sandwich panels.