This production line is used to produce sandwich panels for making automatic doors with the middle layer of rigid polyurethane foam and with aluminum sheet or colorsteel sheet as the top and bottom face layers. The laminated panel is between 30 and 1..
This production line is used to produce sandwich panels for making automatic doors with the middle layer of rigid polyurethane foam and with aluminum sheet or colorsteel sheet as the top and bottom face layers. The laminated panel is between 30 and 100 mm in thickness, 350~700mm in width, length determined by the customer. The operation principle of this line is as follows: PU raw materials are delivered into the mixing head through the metering pump and then evenly injected onto the bottom facing sheet going toward conveyors along with the top superficial sheet. Between the upper and lower conveyors, the liquid materials start foaming and are hardened into shape, after which the formed door panel is, by an automatic tracking cutter, cut into segments according to preset length.
Main constituents and its functions
1. Hydraulic decoiler 2. Clipper 3. Film coverer 4. Embosser 5. Sheet leveller 6. Sheet deliverer
7. Press 8. Hydraulic decoiler 9. Clipper 10. Embosser 11. Forming machine 12. Forming machine
13. Pre-heating oven 14. Mobile injector 15. Laminator 16. Cross-cutter 17. Roller conveyor
Hydraulic decoiler: Used for decoiling and hydraulically expanding steel coils with max.weight of 5T or 10T (for optional use) and the width of 900mm.
Upper and lower embosser: To emboss a custom-made pattern on the surface of steel sheet.
Upper and lower forming machines: With a plate-like structure welded by steel frames and gear transmission system,forming profile to be custom-made.
Hydraulic clipper: For hydraulically cutting steel or aluminum sheet after the decoiling process. Its cutter with 900m cutting width avaiilable and the hydraulic decoiler share one hydraulic station.
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.
Mobile injector: A servo motor is used.
Pre-heating oven: An oven is designed to acheive up to 80℃, temperature adjustable.
Pre-heating table: To heat to 40℃, temperature adjustable.
Double-belt laminator: Options of laminator's length: 12m, 18m, 24m, 30m or 36m; speed range: 2 to 8m/min. Materials of laminator's conveyor plank can be either steel or aluminum as per client's choice.
10. 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.
11. 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.
12. Cross-cutter: With both bandsaw and disc saw machines for optional use. (Pls refer to the introduction on cutters under Single machine category).
(Pls refer to the introduction on cutter series under matching equipment )
11. Mobile injector: The user can choose either a servo motor or servo motor with crank as the driving system.
Optional equipment
1. 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.
2. 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.
3. Packing machine of winding type: For packing sandwich panels.
Main technical parameters
Reciprocating times of injection head per minute more than 60
Production line speed 2～5 m/min
Laminating length of the laminator 20 m
Maximum temperature of hot-air circulating 70 ℃
Maximum rising height of the top conveyor 250 mm
The total capacity for the production line 120～170 kw
External dimensions 70000×5300×3800mm(length×width×height)
Weight 40 tons
Picture of finished product
