Gravure Printing Machine Seven New Technology Innovations

[China Packaging Network News] In the past two years, with the improvement of the overall level of domestic printing machinery manufacturing, domestic gravure printing equipment has also been continuously innovating and has achieved gratifying results.

1, automatic roll up and down technology

In the production process, automatic roll-up and roll-up technology automatically detects the roll material with different roll diameters and different material widths to the clamping station, and the lifting device automatically shifts the finished roll material from the equipment. In the lifting process, the weight of raw materials and finished products is automatically detected and linked with the production management work. This replaces the manual transportation method, which not only solves the bottleneck that the equipment has to achieve normal efficiency and the auxiliary functions cannot be met, but also greatly improves production efficiency and reduces The labor intensity of the operator.

2, automatic cutting technology

With fully automatic cutting technology, the entire automatic cutting process only needs to place the roll on the rack, and the entire cutting process can be completed without manual intervention after the cutting process. Taking a BOPP film with a thickness of 0.018mm as an example, fully automatic cutting can control the length of the reel material within 10m. The application of automatic cutting technology on gravure printing equipment reduces the dependence of equipment on operators and improves work efficiency.

3, intelligent pre-printing technology

The application of intelligent pre-printing technology is mainly in the early stage of the version of the process, reducing the use of manual steps on the scale of the operator, directly using the key groove on the version of the roller and the Mark line on the layout of the one-to-one correspondence, through the roll mechanical zero Automatically confirms the bit and implements the initial version process. After the initial edition process is completed, the system automatically rotates the phase of the printing roller to the position where the automatic pre-registering can be achieved according to the calculation of the length of the color gap, and automatically realizes the pre-registration function.

4. Semi-closed ink tank with lower ink roller

Main features: (1) It can effectively prevent the ink throwing phenomenon under high-speed operation. (2) The semi-enclosed ink tank can reduce the volatilization of organic solvents and ensure the stability of the ink during high-speed printing. (3) The amount of recycled ink is reduced from the original 18L to the current 9.8L. (4)Because the clearance between 1 and 1.5mm is always guaranteed between the lower transfer roller and the plate roller, the transfer of ink to the screen roller can be effectively promoted in the process of rolling the lower transfer roller and the plate roller. Better shallow-tone tone reduction.

5, intelligent data management system

Main function: The on-site intelligent data platform can read the operating parameters and status of the selected machine control system, realize the necessary monitoring and parameter backup and storage; the on-site intelligent data platform can accept the process parameters and related order requirements issued by the remote intelligent data platform. , And implement authorization to decide whether to deliver the process parameters issued by the remote intelligent data platform to the control system HMI, and so on.

6, digital tension

The digital tension is to update the manual valve setting air pressure to the required tension value directly set by the man-machine interface. The tension value of each segment of the equipment is expressed in the human-machine interface through the digital image and accurately expressed, which not only reduces the equipment in the production process. The operator's dependence, but also improves the intelligent operation of the device.

7, hot air energy-saving technology

At present, the hot air energy-saving technologies applied on gravure printing equipment include heat pump heating technology, heat pipe technology, and automatic hot air circulation system with LEL control.

1, heat pump heating technology. Heat pump energy efficiency is much higher than electric heating. At present, the heat pump used on the gravure printing equipment is generally an air energy heat pump. The actual test can save energy by 60% to 70%.

2, heat pipe technology. When the hot air system using the heat pipe technology is in operation, the hot air enters the oven and is discharged through the air outlet. The air outlet is equipped with a secondary air return device. Some air outlets participate in the direct use of the secondary heat cycle, and the other air outlet serves as a safe air exhaust system. As a part of the hot air for safe ventilation, a heat pipe heat exchanger is used to efficiently recycle the remaining heat.

3. Automatic hot air circulation system with LEL control. Using the automatic hot air circulation system with LEL control, the following effects can be achieved: (1) Under the premise of meeting the minimum explosion limit of LEL and residual solvent not exceeding the limit, the use of secondary return air can be utilized to the maximum extent, saving energy by about 45%. , emission reduction of 30% to 50%. (2) The amount of exhaust gas is reduced accordingly. For future bans, 30% to 40% of tail gas treatment investment can be significantly reduced.