PVC FOAM BOARD AND PVC FOAM BOARD MACHINEThere are many kinds of plates that PVC can make, such as hard PVC plates, UV imitation marble plates, large gray boards for brick pallets, transparent PVC sheets, and PVC foam boards to be mentioned today.
As the name implies, the foam board is a foaming agent added to the raw material, which is a change in the density of the board. The function of PVC foam board is: widely used in passenger cars, train car ceilings, box core layers, interior decoration panels, building exterior wall panels, interior decoration panels, office, residential, public space building compartments, commercial Decorative racks, clean room boards, ceiling boards, screen printing, computer lettering, advertising signs, exhibition boards, sign boards, photo album boards and other industries and chemical anti-corrosion projects, thermoformed parts, cold storage boards, special cold insulation projects, environmental protection Plate molds, sports equipment, breeding materials, seaside moisture-proof facilities, water-resistant materials, art materials, and various portable partitions instead of glass ceilings.
There are two processes for producing foam board, one is three-roll shaping and the other is shaping mold shaping. how to choose?
The equipment required for the production of PVC foam board are: mill, mixer, crusher and extrusion production line. These mechanical devices often appear in my blog, so you may wish to take a look. I won't give a detailed introduction here, if you need it, please add me on WeChat or call for a detailed chat.
Talk about the advertising board alone. The advertising board is also called Chevron board, Furong board and PVC free foam board. The machine that produced this advertising board earlier was a three-roller extrusion line: the configuration instructions below. But now more people choose to use the shaping mold to shape the PVC free foam board forming process. The equipment picture is shown above, the detailed explanation is below 2.
As for how to choose the molding process of the foam board, I still hope to communicate with the equipment manufacturers to make accurate choices.
Raw material equipment → vacuum feeding → main machine extrusion → extrusion die → three-roll calender → cooling bracket → two-roll traction machine → longitudinal cutting → transverse cutting machine → conveyor → inspection → packaging
Conical twin screw extruder
Model: SJSZ-80 / 156
Screw diameter: ￠ 80 / ￠ 156mm (special screw for foam)
Screw hardness: HV ＞ 740
Barrel hardness: HV ＞ 940
Screw barrel material: 38CrMoAIA nitriding treatment
Depth of nitride layer of screw barrel: 0.4-0.7mm
Number of screws: 2
Screw length to diameter ratio: 22: 1
Screw steering: Synchronous counter-rotating outward
Screw core string oil system: 1 set
Barrel heating: cast aluminum heater
Heating power: 5 zones × 6kw
Barrel cooling: 4 zones, single zone air-cooled 250 w
Exhaust method: vacuum exhaust, 3kw
Automatic feeding machine: screw feeding machine
Loading volume 360kg / h,
Feeding motor power 1.5kw
Feeding method: automatic forced delivery, power 2.2kw
Maximum production capacity: 350kg / h
Main motor power: 75kw
Reducer, distribution box
Basic structure: Horizontal installation
Cooling method: external circulation cooling system
Imported thrust bearings: high torque output
Gear material: 20CrMnTi carburized hard tooth surface, grinding process.
The entire gearbox is a special reduction device with high life, low noise and low heat.
Electrical control system;
Contactor; Schneider contactor
Temperature control table Japan Omron temperature control table
All electrical components are marked CET or TUF according to the national safety certification. Low-voltage electrical appliances are configured as Schneider products
Hanger-type foam sheet mold:
Mould material: Mould steel forged and tempered, hard chrome plated, polished
Hanger plate head product thickness is 3-15mm
Effective width 1350mm
Heating power 22kw adopts internal heating method
Temperature control 9 zones
The flow path of the machine head is a hanger type gradient flow path. The machine head is made of high-quality alloy steel 40CrMo. The surface is chrome plated and polished; the die lip is adjusted and the lower die lip can be replaced
Calender roll diameter Φ400mm
Roller treatment process after mirror treatment
Made of three-roller material 40CrMo,
Chrome plating thickness 0.07-0.1mm
Roller effective length 1500mm
Drive motor power 0.75kw × 3 sets
Roller linear speed 0-2m / min
The roller is equipped with a heating constant temperature system,
Hot water pump power 1.1kw × 3 sets,
a. The machine uses three mirror rollers to drive independently.
b. The drive reduction motor adopts a square inverter to achieve stepless speed regulation, high running accuracy, and overcomes the errors caused by mechanical transmission;
c. Both ends are supported by Japanese NSK spherical roller bearings with high rotation accuracy.
d. The three-roller independent drive mode is the most accurate drive mode in the three-roller transmission, which can ensure that the running accuracy of the roller after repair is not affected by the change in the diameter of the roller.
e. The gap between the upper and lower rollers is controlled by a constant worm gear system, which can be adjusted by manual or reduction motor drive; and to ensure safety, an upper and lower limit system is installed.
SJTJ-6000 cooling bracket
Stainless steel roller diameter: Φ50mm
Stainless steel roller length: 1600mm
The cold floor rack and precision steel pipe are arranged in a 6 meter long roller table with a bracket underneath.
Two-roller traction device FQY-1600
Drive gear motor power 3kw
Rubber roller specifications: Φ250 × 16500mm
Number of rubber rollers: 2 pairs
Traction speed: 0.5-5min
The machine consists of two pairs of rubber rollers, which are compressed by the cylinder
Longitudinal cutting device
Cutting motor power 2.2kw × 2
Adjustment method: The width can be adjusted freely according to the product requirements
Cutting method Circular saw cutting
Saw blade diameter ф300mm
Horizontal cutting machine
Cutting method: electric transverse cutting
Self-locking motor: 2.2kw
Cutting plate thickness: 3-20mm
Cutting plate width: 1300 mm
Meter Counter: Meter Counter, Autonics
Drive transmission motor power 0.55kw
Bracket specifications 3000mm × 1500mm
Conveying method: Flat belt conveying
SHR300 / 600 high cold mixing unit