English
A blown film device for high viscosity flexible liquid crystal TAC screen optical film, and a practical invention for high viscosity optical film production equipment, using blown film process, with bidirectional extensibility. Better unidirectional elongation performance than the casting method. Can be used for medical purposes. Photovoltaic and semiconductor components. LED screen. Protection of surfaces such as display screens, LCD screens, architectural decorations, handicrafts, etc.
The advantages of this device are:
Solved the domestic blank field of high mucosal equipment. Featuring ultra-high cost-effectiveness.
Instead of solvent residue and peeling caused by adhesive coating, the blown film method can be molded in one go without the need for further processing.
Can produce high viscosity self-adhesive protective film without solvent residue, with a wider range of applications.
Functional films can be produced using 3-layer co extrusion. And conventional packaging materials. One machine is versatile.
Intelligent operation. High degree of automation. Easy to operate, remote IoT monitoring and communication.
The structure is as follows:
Under the S1 rack. There are three extruders arranged in a T-shaped configuration. Middle layer extruder - inner layer extruder - outer layer extruder. Stable foam rack.
S2 intermediate extruder. Equipped with a driving motor motor. Reducer. Screw. Heater. Network changer. Hopper. Weighing and suction device.
S3 inner extruder. Equipped with a driving motor motor. Reducer. Screw. Heater. Network changer. Hopper. Weighing and suction device.
S4 outer extruder. Equipped with a driving motor motor. Reducer. Screw. Heater. Network changer. Hopper. Weighing and suction device.
S5 main electrical cabinet. Equipped with a frequency converter and electrical components. Control components.
Above the S6 rack platform. Equipped with a rotating gear plate. Rotating motor. Rotating platform. Traction device. Roll up equipment.
Install a rotary gear plate and drive motor on the lower side of the S7 rotating platform. And copper ring tracks. Carbon brush. 360 degree rotation,
The upper side of the S8 rotating platform is equipped with a traction device and a winding machine.
S9 traction device, equipped with a herringbone board. Adjustment device, clamp. Drive motor, cylinder, secondary traction device,
S10 secondary traction location. Equipped with edge breaking knives. Cut the two layers of film into a single layer of film.
The S11 winding section is equipped with two independent AB winding machines and a slitting section.
The S12 cutting section is equipped with a cutting blade and tension monitoring.
The process is as follows:
The raw materials are fed into the hopper by the suction machine.
The main motor drives the reducer to rotate the screw.
After heating, the barrel transfers heat to the screw. After the screw rotates, the solid material particles are plasticized into a solution.
The raw materials are filtered through the filter plate of the screen changer to remove impurities. Entering the rotating machine head, the internal flow channels of the mold are distributed. Form a circular mold base.
Inject air from the internal air intake fan. Close the mold base end. Cooling forms film bubbles. The larger the intake volume, the larger the membrane bubble. Conversely, the less.
The stronger the internal air flow. The smaller the swelling of the membrane bubble. On the contrary, the larger it is.
After the external air enters the wind ring. Uniformly distributed by internal structure. Cooling for shaping film bubbles,
There are three ultrasonic sensors installed on the lower side of the stable bubble holder. Real time monitoring of membrane bubble size. Controlled by PLC module PID closed-loop inverter analog quantity. So as to control the fan speed and air volume. Realize the loop following control of internal air intake and internal air exhaust. Eliminate the high temperature heat inside the membrane bubble. External cold air enters the membrane bubble. Alternating cold and hot output. Thus solving the problem of high temperature cooling and shaping drawbacks of FEP materials.
The rotating platform is equipped with a rotating motor motor. Rotating motor. Traction and winding operate 360 degrees. It can improve the flatness and bursting phenomenon of the film after molding.
After the film bubble is formed, it enters the traction device vertically from bottom to top. It needs to be fixed by a stable bubble holder, and the angle of the herringbone plate will flatten the circular film bubble to form a flat film. According to the diameter of the membrane bubble. Adjust the angle between the opening and closing range of the stable foam rack and the herringbone board.
The traction device is equipped. Clamp, drive motor, reducer. Cylinder. After the membrane bubble enters the clamp. Form a planar two-layer thin film. The traction speed is fast. The thickness of the film is reduced by stretching. Conversely, the thickness of the film increases.
The film is divided into two separate layers of single film by secondary traction, and then individually guided by a guide rod into AB rewinding machines.
There is an edge correction machine installed on the rack. Used to correct the left and right offset position of the film edge. Due to the shaking of the film in actual production. Avoid uneven edges after winding into rolls of material.
After entering the auxiliary traction, the film enters the winding process,
Auxiliary traction is equipped with clamps and a drive motor. Reducer. cylinder
The flipping mechanism is equipped. Worm gear. Drive motor, independent drive shaft, does not affect AB winding drive when flipping.
The winding part adopts a separated clutch structure, which can achieve independent driving of AB dual stations simultaneously. Do not interfere or affect each other. There are 2 independent drive motors. Chain wheels and synchronous belts can be used interchangeably. The inflation shafts are interchangeable for use.
The cutting area is equipped with a bracket. Rodless cylinder, blade, cylinder
PLC controllers and electrical components are installed inside the external covers on both sides. Adopting industrial control touch screen. Easy to operate.
Production process:
The material enters the storage rack. Monitored by displacement sensors. The up and down running position of the screw is controlled by the PLC system. Ensure the required storage capacity of materials.
After the material enters the auxiliary traction. Real time online monitoring and closed-loop control by tension sensors, driving the motor to ensure synchronous traction speed with the upstream production line.
The material is rolled into the A-axis winding operation. After reaching the set distance. The B-axis starts running ahead of schedule. The flipping mechanism begins to operate. After reaching the position, the cutting device starts working. Automatically return after cutting is completed. Count reset to zero. The A-axis stops running. The B-axis starts calculating new roll diameter values. Wait until the next cycle when the roll is changed. B repeats A's action. Switch AB alternately in sequence.
