This machine is driven by the ELS system in each color. Use a direct electronic drive type; the printing unit uses a servo motor, connected to the printing cylinder. achieve digital printing, high speed, and intelligence.
Printing speed 300meters per minute. It has high capacity. The application field: food package, industry package, printing factory, and so on. Some use in coffee packages, tea leave package, and so on.
Structure description
Unwinder
●The unwinding section is equipped with automatic cutting function, and the material is automatically connected at high speed without stopping or slowing down. Safety nets are installed on both sides
●Independent double-arm double-station revolving frame and steel frame combination
●The method of loading and unloading the coil is air cap and air shaft, which is convenient and quick to load and unload the material.
●Single active unwinding form of dual unwinding shafts, driven by dual frequency conversion motors, high reliability
●Independent drive control system adopts Japanese Yaskawa intelligent digital frequency conversion control
●Tension monitoring system and swing roller stabilization system, tension closed loop control
●Swivel arm can be swivelled in both directions of 360°
●Horizontal manual adjustment of the material roll, the adjustment amount is ±30mm
●High-speed non-stop material changing, new material is automatically driven at the same speed as the host, and there is an alarm for remaining material
●Automatic detection of roll diameter, automatic positioning of revolving frame turning and transfer, turning with brake turning motor 0.75KW, improving the accuracy of roll diameter detection
●Material changing has a curved surface detection function, which can reduce the length of the joint
●The largest roll diameter can be installed 800mm, and the automatic cutting range is φ200mm-φ800mm in diameter
Unwinder traction
●Double-roller-to-roll test, rigid and flexible combination, to ensure the stability of the printing tension
●The adjustment of the clutch pressure of the flex roller is completed by pneumatic components, and the clutch of the flex roller is linked with the host computer, and is completed by the central controller.
●The traction steel roller has an independent servo motor to decelerate and drive independently, which is driven by Yaskawa servo driver to complete the control
●The tension pendulum roller has an internal, tightly controlled, high-precision encoder imported from Japan to achieve tension detection and closed-loop control to ensure stable printing tension
●Multi-stage tension PID regulation and stability system
●The traction tension is accurately set by an imported precision pressure-reducing valve
Printing
Plate mounting part
●The plate loading method is large plate shaft without shaft plate, which has high plate changing efficiency. The horizontal installation ruler can ensure the uniform initial position of the plate. The new ink cleaning ring is installed on both sides of the top plate shaft to reduce the top plate shaft from being stuck by the dry ink.
●Horizontal manual-automatic integral register actuator, to a certain extent make up for the register error caused by the uneven thickness of the film
Pressing and printing part
●The embossing roller is an integral type, which can be quickly replaced, and the embossing rubber roller can be locked in the high position when the machine is stopped.
●The embossing roller structure is a swing arm structure, the support is a rolling bearing support, eliminating mechanical gaps, ensuring that the film length changes the smallest when the rubber roller is pressed, and the pressure is balanced on both sides, so as to achieve the best printing effect
●The embossing roller will automatically act in sequence when pressing, and it will automatically release at the same time when it stops.
Scraper part
●The scraper device is a high-standard casting closed box scraper, double-cylinder pressure, three-directional adjustment structure to create the best scraper position
●Straight linear slide rail for scraper lifting, self-lubricating bearing for left and right movement, all equipped with ink protection cover to prevent ink splashing and jamming
●The movement of the scraper is driven by a separate motor, the frequency of movement can be synchronized with the host, and the amount of movement is 10mm, which can also be adjusted manually
●The squeegee swings left and right with self-lubricating bearings, which can move flexibly and without resistance, eliminate the vibration during the movement, and ensure the best effect of scraping
Ink parts
●The ink fountain is a backflow open type, up and down is adjusted manually, the ink tank is filled with 8kg ink, and the plate roller can be inked for printing
●The ink supply method is a pneumatic diaphragm pump that circulates the ink from the bottom of the ink tank. The ink in the ink tank is uniform and has good fluidity.
●Closed ink tank: The ink tank is equipped with combined ink baffles around the front and back to form a closed ink pan, the surface is treated with Teflon, suitable for large and small rollers, which not only solves the problem of ink splashing, but also reduces the disorganized discharge of VOCS and improves Workshop environment, saving solvent usage
●The bottom side of the ink tank is equipped with a ground exhaust device to reduce the unorganized discharge of VOCS and improve the workshop environment
●The inking method is the double cylinder transfer roller indirect transfer inking, the transmission adopts a separate motor frequency conversion speed, which can be forward and reverse, easy to clean and reduce safety accidents during the cleaning of the ink transfer roller
Others
●Teflon easy-care liner is installed inside the printed wallboard for easy cleaning
●Bilateral adjustable guide roller corrects the slight deviation of the material film and the plate roller, and has a digital dial for easy adjustment
●Each group is equipped with a layout blowing device
●Each group is installed with anti-static superconducting electrostatic rope to eliminate static electricity to the greatest extent and reduce high-speed printing safety accidents and quality problems
●Each assembly has an independent start-stop button, humanized operation, convenient and quick
●A safety pull rope emergency stop switch is installed above the scraper blades of each unit to improve the safety of the equipment and reduce further personal injury
Drying
●New type low-residue water-based ink oven diversion structure, left and right air separation design, secondary air return structure, oven galvanized sheet/stainless steel liner, to ensure sufficient air intake in the oven, uniform wind speeds up and down, left and right, and smooth return air
●Independent drying system design, stable temperature, low noise. ≤85dB(A)
●Fully enclosed double-layer thermal insulation oven (built-in thermal insulation layer can save energy by 10%-20%), customized high-speed and large-flow fan, the nozzle wind speed of the oven can reach 35-40m/s, achieving the effect of low temperature and high wind speed drying , Effectively solve the problem of difficult drying of water-based inks, avoid high temperature baking of the film, affect the film characteristics, and destroy the tension of the whole machine
●The hot air returns to the air multiple times for utilization, saving energy
●The negative pressure design in the whole box reduces the fugitive emission VOCS, reduces the phenomenon of dry plates, and improves the workshop environment
●Pneumatic opening and closing design of the cabinet, the opening and closing volume is 0-300mm, which is convenient for material loading and guide roller cleaning
●Intelligent continuous constant temperature control, single group automatic control, convenient and accurate
Cooling
●It adopts water-cooled roller to cool, the water temperature is 20℃～25℃, the diameter is φ150mm
●The water-cooled roller has a multi-layer water leakage protection structure, which can effectively avoid bearing rust and jam caused by water leakage.
●The rotation of the water-cooled roller adopts pure imported NSK self-lubricating bearings with low damping design structure design, flexible rotation, cold water overflows and flows back, and the transparent window can monitor the running status of the roller
●The cooling roller adopts a large wrap angle to feed, and the printed matter is in front contact to ensure the cooling effect
●The roller surface is made of sandblasting technology, which reduces the vertical and horizontal floating caused by the asynchronous film and water-cooled roller during high-speed printing, and enhances the stability of overprinting
Rewinding traction
●Double-roller-to-roller test, rigid and flexible combination to ensure stable printing tension
●The adjustment of the clutch pressure of the flex roller is completed by pneumatic components, and the clutch of the flex roller is linked with the host computer, and is completed by the central controller.
●The traction steel roller is independently driven by the Japanese Yaskawa servo motor and controlled by the imported Yaskawa servo driver
●The tension pendulum roller has an internal tightly controlled high-precision encoder imported from Japan to achieve tension detection and closed-loop control to ensure stable printing tension
●Multi-stage tension PID regulation and stability system
●The traction tension is accurately set by imported precision pressure reducing valve
