Polyurethane Foam Sandwich Panel Continuous Production Line is a special equipment for the production of sandwich panels with the upper and lower layers of non-woven fabrics and other soft-surface materials, and the intermediate sandwich layer of polyurethane, and the specifications of the sandwich panels are thickness of 20-100mm, width of 1200mm, and length of the sandwich panels are customized. Its working principle is: the polyurethane foam raw liquid through the filling machine metering pump to a certain ratio into the mixing head mixing and pouring in the sandwich panel bottom layer material, and the upper layer material together into the laminating conveyor, in the laminating conveyor up and down the chain plate between the foam curing molding; curing molding of the sandwich panel material in the production line by both sides of the trimming by automatic tracking cut-off machine according to the needs of cutting a certain length of the product.
Main technical parameters
Production line speed 2-7m/min
Thickness of sheet: 20-100mm
Mixing speed 4500r/min
Reciprocating speed of pouring head <1000mm/s
Maximum temperature of hot air circulation 70℃
Laminating length of lamination machine 24m
Maximum opening height of laminating machine is 280mm
Total installed power is 180KVA
Equipment Composition
The production line consists of two sets of feeding device, one set of preheating device for surface material, one set of PU low-pressure foaming machine, one set of mobile pouring machine, one set of device for attaching side paper, one set of laminating conveyor, one set of hot-air circulator, one set of trimming device, one set of automatic tracking cutting machine, one set of automatic tracking cut-off machine, one set of hot air circulator, and one set of automatic tracking cut-off machine. One set of hot air circulating device, one set of trimming device, one set of automatic tracking cut-off machine, and one set of roller frame.
Discharging device Two sets
Discharging device will be installed on the front end of the production line and on the platform of the upper end of the laminating conveyor, which can discharging, correcting control and positioning of the fabrics before they enter into the laminating machine, and at the same time, it can control the surface tension of the fabrics. It is equipped with 2 air rising shafts.
Main technical parameters
Load weight: 1500kg
Maximum outer diameter of rolled material: 1000mm
Inner diameter of rolled material: φ75mm, φ150mm
Maximum width of fabric: 1225mm
Raising mechanism: Magnetic Brake
Fabric position correction mode: Manual.
One set of pre-heating device for surface material
Used for pre-heating the lower surface material before pouring
Main technical parameter
Heating power: 3.6kw
Surface temperature of the electric heating pipe＜200°
Fan power: 0.04kw×3
Heating temperature: 40℃controllable
Low-pressure polyurethane foaming machine: 1225mm
Low-pressure polyurethane foaming machine: magnetic brake
Position correction of surface material: manual
Polyurethane low-pressure foaming machine
Equipment composition and main technical parameters
Tank assembly
Resin tank volume 220L two, jacketed, stainless steel liner, with filter. Stirring power: 0.5 × 2, explosion-proof motor, speed 60r/min.
Pump assembly:
Metering pump: two, replenishment pump (pneumatic diaphragm) two.
With corresponding material pipe-set.
Mixing head assembly
High-speed mixing head, speed 2900r/min, power 2.2kw, explosion-proof motor.
Two pneumatic switching ball valves, with automatic cleaning device, cleaning tank volume of 25L, stainless steel material, with the corresponding cleaning valve, solenoid valve. Material and liquid system:
Corresponding liquid solenoid valve, pipeline valve. Material temperature digital display adjustable, with switch. With heating water tank, power 6kw. Pump motor power: 0.37kw.
Mainframe electrical control:
Electrical control box, control motors, cylinders, solenoid valves and other actuating elements, PLC man-machine control, pouring time, cleaning time, blowing time, pouring, cleaning, blowing program can be set in advance.
Mobile pouring machine
Mobile pouring machine consists of main frame base, servo drive device, slide and so on.
The main frame is mounted on the base, which is equipped with a guide rail to realize the adjustable distance between the main frame of the mobile pouring machine and the laminating machine. The base is equipped with an adjusting device to adjust the height vertically. The slide is moved back and forth by servo motor planetary gearbox and synchronized toothed belt dragging. Mixing head is installed on the slide to realize reciprocating fabric. The reciprocating distance, position and frequency are controlled by PLC and touch screen.
Main Technical Parameters
Power 1.5KW
Maximum speed 1000mm/s
Maximum width of fabric 1200mm
Maximum longitudinal distance 800mm
Maximum vertical distance 100mm
One set of paper tape sticking device
With a reel to stick the paper tape to the board. Reel to paste the paper tape on the side of the sheet
Main Technical Parameters
Inner diameter of the paper roll: φ75mm, width of the paper: 50-100mm
Laminating Conveyor
The production is equipped with a laminating conveyor, which is used for laminating and shaping of the sheet. The laminating machine adopts chain plate transmission structure, the chain plate is made of high quality aluminum alloy, the speed is adjustable steplessly by frequency conversion, the thickness of the sandwich board is guaranteed by the spacing between the upper and lower chain plates of the laminator, the power to open the laminating chain plate of the laminator adopts a speed reducer, and the maximum height of the opening is up to 280mm, which is convenient for adjustment and maintenance, and the 16 lifts ensure that the laminating chain plate on the laminator stays in any position.
Main technical parameters
Length of laminating conveyor 24m
Center distance of sprocket 23.6m
Length of sprocket 1340mm
Width of sprocket 200mm
Height of sprocket 60mm
Pressure: 0.6bar/cm2
Transmission power 7.5kw×2
Lower track working height 1200mm
Maximum spacing between upper and lower tracks 300mm
Speed regulation: AC frequency conversion
Screw elevator: 16pcs
Elevator tonnage: 15T
Hot air circulating device
Fuel oil hot-air furnace and electric heating as heating source. . The circulation channel is formed through the air duct, air supply fan and upper and lower presses. Customers can choose simultaneous heating or separate heating according to process requirements.
In order to adjust the temperature of the upper and lower presses, the air volume adjustment plate is installed on the main air duct.
Thermal sensors are installed in the middle of the upper and lower laminating presses as well as at the air outlet of the electric heating box, and the temperature control is realized through the digital display temperature controller.
Main technical parameters
Electrical heating power 60kw
Temperature of air outlet 60～200℃ adjustable
Heating power of hot air furnace 200,000kcal
Maximum temperature 70℃
Circulating fan power 5.5kw
Circulating air volume 12000m3/n
The power of supply fan is 3kw
Set of trimming machine
The production line is equipped with 1 set of trimming machine, which is used to trim both sides of the plate after shaping, the plate shaped in the production line is 1225mm, and 1200mm after trimming, the machine adopts circular saw. The machine adopts circular saw and is equipped with bag-type vacuum cleaner.
Main technical parameters
Band knife power 3kw
Dust suction power 4kw
Automatic tracking cut-off machine
Production line is equipped with a circular saw automatic tracking cut-off machine.
Adopting infrared length measurement, with cloth bag type dust-absorbing machine.
Main technical parameters
Walking mode: follow type
Circular saw walking power: 0.75kw
Clamping cylinder: φ80×125×2
Reset cylinder: φ80×1200
Circular saw lifting cylinder: φ80×125
Minimum cutting length: 2m
Minimum cutting length: 2m
Minimum cutting length: 2m
Minimum cutting length: 2m
Minimum cutting length: 2m
Circular saw power:3kw
Length accuracy:±2mm
Diagonal accuracy:±2mm
Dust suction power:4kw
Roller frame
Roller frame is composed of steel tube roller, bracket, and driving part.
Diameter of roller: φ76mm
Length of roller: 1300mm
Pitch of roller: 300mm
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