The working principle of single servo sleeve laminating flexographic printing machine can be analyzed from three core dimensions: driving mode, sleeve structure and laminating layout. Its technology integrates the precision control of a single servo motor, the advantages of rapid plate change of sleeve system and the the compactness of stack structure, as follows:
1, Single servo drive: precise synchronization and simplified transmission.
The model uses a single servo motor to drive down the roller shaft and drive the rubber roller and plate roller through the gear transmission system. Compared with traditional multi-motor drive or full servo drive, the single servo scheme controls the movement of printing device by single motor, simplifies transmission structure and reduces equipment cost. Its core advantages are:
Synchronization control: The servo motor through the closed-loop feedback system (such as an encoder) real-time monitoring of speed and position, to ensure the bottom roll, rubber roll, printing roller plate roller synchronous operation, to avoid overprinting deviation due to speed difference.
Dynamic response: the servo motor has high torque output and fast start and stop ability, can adapt to frequent acceleration and deceleration requirements in printing process, improve efficiency of plate replacement or adjustment.
2, Sleeve type printing plate and roller: quick plate change, adaptability.
The sleeve system is the core component of the model, and its working principle is based on the combination of support roller and bushing:
Installation and fixation:
Plate mounting: after the operator presses the upper plate button, the plate roller rotates to tooth position, and the plate drum is manually fixed to the front of the plate. Then, plate roller rotates to the tail of the plate at a low speed, and the plate insertion into the tail of the fixed plate to complete the overall installation.
Sleeve expansion: Compressed air is introduced into the cylinder, the gas is evenly expelled from the precise holes on the surface of the cylinder, forming the ``air cushion '', expanding the inner diameter of the cylinder, pressing against the cylinder for seamless transmission.
Quick replacement: After cutting off the gas source, the casing shrinks and separates from the air support roller. Operators can easily slide the sleeve into place to replace printing plates or mesh rollers of different specifications without removing gears or making complex adjustments.
Accuracy guarantee: sleeve adopts high-precision machining (such as adjusting sleeve circumference and keeping the core shaft size unchanged), ensures positioning accuracy in repeated installation and reduces errors caused by mechanical wear.
3, Stacked Layout: Modular Design, Efficient Overprinting.
Printing device adopts vertical stacking device, each unit independently includes plate cylinder, printing plate drum and ink supply system. Here's how it works:
Baseboard path: The material belt passes through each printing unit in turn and passes through the image and text under light pressure contact between the plate and the impression cylinder. The stacked structure can stably control the tension between material strip and reduce overprinting deviation caused by tension or deformation.
Independent regulation: Each printing unit can independently regulate pressure, speed and ink volume to meet the complex requirements of multicolor printing. For example, with servo motor driven plate roller fine tuning phase, can achieve high precision color matching.
Modular expansion: Stacked design allows for adding and subtracting equipment 4-color and 6-color units) depending on printing needs, and adjusts spacing between devices to facilitate installation of drying equipment or integration of other processes (e.g. glass, cold pressing).
4, Auxiliary system: ensure the stability and efficiency of printing.
Tension control: traction device is driven by a servo motor and a reducer, adjust the motor speed in real time according to the feedback of position deviation of the tension swing roller, ensure constant tension of the material belt, and avoid printing quality problem caused by tension fluctuations.
Ink supply system: closed ink scraper and mesh roller combination, through the quantitative ink supply, reduce ink evaporation and environmental pollution. It also supports rapid cleaning and ink volume adjustment to meet the needs of different printing materials.
Safety and operation: Manual jogging controls allow operators to check equipment status (such as rubber roller wear and plate installation) at low speeds and alert others to reduce operational risks by ringing a bell.
