English
XYBJGC-3 × 1400 three-layer co extruded film bubble cold traction rotary composite film production line
Standard configuration and main technical parameters
This device is used for blowing PE heat shrink film materials. Fully automatic heat sealed packaging roll fabric. Replace the traditional manual two end wrapping process. While saving labor costs. Reduce the usage of packaging materials. And improve the wrapping firmness of the fabric. For example, the size of the rolled fabric. The outer diameter is 500mm and the height is 2400mm. Previously, a cylinder membrane with a width of (500X3.14)/2=800mm was used. The length is 2700MM. The thickness of the single layer is 0.035MM. Currently, a roll type film with a width of 2500MM and a single layer thickness of 0.025-0.03mm can be used. Fully automated packaging line is used. Automatic sealing. After passing through the oven, it undergoes bidirectional thermal shrinkage. The packaging fabric is more compact. Anti puncture. Easy to transport and handle. The packaging material is required to have a bidirectional thermal shrinkage rate between 25% and 35%. Outer heat sealed non stick knife.
1、 Main technical parameters:
Product width: 1200mm
Product thickness: 0.03-0.15mm
Thickness deviation: (2 sigma)
0.03-0.039mm≤±12%
0.04-0.059mm≤±10%
0.06-0.10mm≤±9%
0.10-0.15mm≤±8%
Three layer co extrusion structure: A/B/C
Total installed power: approximately 150KW
Applicable raw materials: LDPE LLDPE/LDPE mLLDPE, etc
Dimensions (L × W × H): Approximately 10500 × 4000 × 7200mm
2、 Standard configuration:
1. Extruder: Two SJ55/30 extruders, 30kw AC motor, frequency converter controlled speed regulation.
One SJ65/30 extruder, 37kw AC motor, frequency converter controlled speed regulation.
1.1 Screw structure: The screw is designed with a shear section and a mixing section to reduce pressure and production fluctuations, and improve the uniformity of the melt.
1.2 Screw diameter: Φ 55/65mm
1.3 Screw speed: 15-120rpm (SJ55/30), 15-90rpm (SJ65/30)
1.4 Screw surface hardness: HRC56-60.
1.5 Screw barrel material: 38CrMoALA high-quality alloy steel, processed strictly according to heat treatment process, surface treated with nitriding, wear-resistant and corrosion-resistant.
1.6 Surface hardness of the barrel: HRC60-62.
1.7 The body adopts a cast aluminum heating system
1.8 Barrel heating section: 4 sections.
1.9 Barrel heating power: approximately 11.2KW (SJ55/30), 15KW (SJ65/30).
1.10 Cooling method for the barrel: automatic air cooling for overheating, water cooling for the feeding section.
1.11 Quick screen changing device: The screen changing area is automatically sealed without any leakage, making it convenient and efficient to replace the filter screen, saving time and effort.
1.12 Quick change part heating power: about 4kw.
1.13 Intelligent Melt Pressure Display: Digital LCD displays the melt pressure inside the extruder and monitors the working status of the extrusion system in real time.
1.14 Digital LCD Temperature Control Meter: The digital LCD displays the set temperature and actual temperature of each temperature control section, making operation intuitive and convenient.
1.15 Gear reducer: The gears have undergone hardening treatment and surface grinding, resulting in smooth transmission with characteristics such as low noise, high speed, high torsion, and wear resistance.
1.16 Deceleration method: The gearbox is used for deceleration, and the transmission ratio is reasonable.
1.17 Transmission mode: direct drive.
1.18 Drive motor: 30/37kw motor, runs smoothly and has good heat dissipation effect.
1.19 Speed Control Method: Variable frequency drive controls speed control, which is efficient, energy-saving, precise, sensitive and reliable in speed control.
1.20 hopper: made of 50kg stainless steel.
1.21 Contactor and air switch: Zhejiang "Chint".
1.22 Inverter: "Huichuan".
2. Three layer co extrusion internal cooling mold and air ring
2.1 The mold design is scientifically reasonable, the material flow is evenly distributed, and the production of thin film products is ensured to have good thickness uniformity; The design structure of the flow channel is smooth and free of dead corners. The flow channel is finely ground and polished before being plated with hard chromium, resulting in a high surface smoothness and good transparency and glossiness of the produced thin film products.
2.2 New high-efficiency cooling air ring: The optimized design of the new air ring ensures uniform and stable air volume adjustment, providing extremely high cooling effect and film bubble stability, thereby ensuring high production, good transparency, and thickness tolerance.
2.3 Mold processing: Independent precision processing is completed by a precision four axis linkage machining center to ensure the machining accuracy of the mold and the uniformity of material distribution in each layer.
2.4 Mold specifications: Φ 280
2.5 Mouth mold gap: 2.3mm
2.6 Mold Material: 40Cr
2.7 Heating method: Strip shaped high-temperature resistant stainless steel heating ring.
2.8 Wind ring material: cast aluminum alloy material.
2.9 Heating power: about 19kw.
2.10 Temperature control section: 5 sections.
2.11 External cooling fan: 11kw fan, frequency converter controlled speed regulation.
2.12 The IBC membrane bubble cooling device consists of an inlet device that provides cold air flow to the inside of the membrane bubble and an exhaust device that discharges hot air flow.
2.13 Membrane Bubble Detection System: A digital bubble diameter detection system consisting of three ultrasonic sensors (produced in Germany).
2.14 PLC Bending Control System: Adopting PLC control, the air volume is adjusted by adjusting the fan speed, with high control accuracy and small deviation in membrane bubble bending diameter.
2.15 Internal cooling fan: Both the inlet and outlet fans are 5.5kw fans with variable frequency control.
3. Traction rotating auxiliary machine: tower mechanism.
3.1 Stable Bubble Rack: Aluminum guide roller type stable bubble rack, which can be radially adjusted according to the size of the film bubble to avoid radial shaking of the film bubble.
3.2 Aluminum alloy guide roller type herringbone plate: The guide roller is in rolling contact with the film bubble, with low friction and few scratches, providing good performance
Film flatness.
3.3 Side guide roller: It plays a stabilizing role on the side, preventing the film from moving along the axial direction of the traction roller and ensuring that the film is wound neatly.
3.4 Traction rotary drive motor: 750W AC motor, frequency conversion control.
The action of the traction rotating part is controlled by the forward and reverse travel switches.
3.6 Rotation method: Horizontal swing rotation, 360 degree reciprocating rotation.
3.7 Rotation speed: 7-10 minutes per revolution, adjustable speed.
3.8 Upper traction clamp: composed of an active roller (steel roller) and a passive roller (rubber roller).
3.9 First traction roller clamping method: pneumatic clamping control.
3.10 Drive motor and its control: 1.5kw AC motor, frequency conversion control.
3.11 Traction speed: 5-50 meters per minute
3.12 Transmission mode: Adopting direct transmission instead of sprocket and chain transmission, it runs smoothly and has constant tension. Fundamentally
Eliminating the impact of speed fluctuations caused by chain shaking on film tension.
3.13 Air cushion roller: The external air cushion prevents direct contact between the film and the air cushion reversing roller, avoiding scratches on the surface of the film.
3.14 Guide roller: Made of aluminum alloy material, calibrated for dynamic balance.
3.15 Flattening roller: an arc-shaped flattening roller that flattens the film surface without folding.
3.16 EPS Ultrasonic Correction System: Automatic correction guidance to ensure neat film winding.
3.17 According to customer needs, reserve installation positions for corona treatment machines for easy operation and maintenance.
4. Winder: Dual station passive friction automatic roll changing, A and B winding parts can be adjusted separately.
4.1 Winder drive motor: 1.5kw AC motor, frequency converter controlled speed regulation.
4.2 Second traction drive motor: 1.5kw AC motor, frequency converter controlled speed regulation.
4.3 Second traction pinch roller: pneumatic control.
4.4 Winding speed: 5-50 meters per minute
4.5 Maximum bending diameter: 1200mm
4.6 Maximum roll diameter: Φ 800mm.
4.7 Cold cutting device: The film can be cut into multiple films online according to the product specifications.
4.8 Length Calculation Device: When the film roll reaches the set length, the electric whistle will automatically sound an alarm to remind to change the roll.
4.9 Inflatable scroll: 4 pieces.
4.10 Tension closed-loop control system: A new automatic tension control system is adopted to achieve automatic tension adjustment based on the measured tension changes of the film, ensuring a constant winding tension of the film.
4.11 Flying knife cutting, automatic roll change.
5. Electrical control system:
5.1 Extruder control cabinet: Monitor and control the processing temperature, screw speed, current, and other working conditions of three extruders separately.
5.2 PLC control system.
Note: This configuration does not include auxiliary machinery such as automatic feeder, mixer, air compressor, edge feeder, corona generator, and cold water system.
