Application of the hottest colorman rubber blanket

Application of colorman blanket automatic cleaning device

in the lithography process, some ink particles and paper wool will accumulate on the rubber drum. In order to print high-quality prints, operators have to clean the rubber drum regularly in production. However, manual cleaning is very laborious and time-consuming, and the volatilization of cleaning agent will make operators feel very uncomfortable, and long-term operation will affect their health

nowadays, this laborious and time-consuming work can be replaced by the automatic blanket cleaning device, which can be completed in just a few seconds

cleaning process

1 Working mode

the whole blanket cleaning device can realize full automation. The operator can flexibly set up the cleaning program according to needs. In pecom control center, each cleaning beam can be selected to work separately, or it can be expressed by tensile strength (n) or tensile strength (MPA) to be collectively selected for collective cleaning. The working mode of the rubber automatic cleaning device is that the cleaning roller rotates to clean the rubber blanket through the clutch of the air cylinder and the rubber drum and the drive of the motor in the cleaning beam

2. Working process

for any started cleaning procedure, the most basic requirement is that the speed of the printing machine should be at least 300 rpm

the whole cleaning process itself was added into the pecom control center. Its fully automatic movement process: the motor drives the cleaning roller at a low speed → the supply system supplies water or solvent to wet the cleaning roller → the cleaning roller lifts or falls to contact the rubber drum (at this time, it is still at a low speed, and the angular speed of the cleaning roller is opposite to the direction of the rubber drum, and the tangent line speed is equal) → the cleaning roller transfers water and cleaning agent to the rubber and returns to the central position, The motor reversely drives the cleaning roller to run at a higher speed → press it against the rubber roller just wetted and start cleaning (at this time, the angular speed direction of the cleaning roller and the rubber roller is the same, and the tangent line speed direction is opposite, but the speed of the cleaning roller is faster than the rubber roller), and use the speed difference between the two to rub each other to remove ink and paper wool → after cleaning, the cleaning roller returns to the middle position and uses a scraper to clean itself

several cleaning methods

pecom system is equipped with three cleaning methods: intermediate type, deceleration type and final type. The operator can either automatically select the unit to be cleaned according to the definition of the system, or make an artificial selection. According to the different cleaning methods, the cleaning will be carried out on the console or each printing unit. After starting, the whole cleaning process will be carried out automatically according to formula (6)

the automatic cleaning device is also equipped with a water and solvent supply system and a waste liquid recovery system. During the cleaning process, if the liquid level in the solvent tank supplying detergent is lower than the minimum value or the liquid level in the waste liquid tank is higher than the maximum value, information will be fed back to the console, and the cleaning will stop at any time until the above problems are solved

1. Intermediate cleaning

intermediate cleaning is suitable for printing machines with speeds ranging from 10000 to 20000 rpm. If the speed is lower than 10000 rpm, this cleaning method will not be started. If the speed exceeds 20000 rpm, the cleaning mode can also be started, but after the program is started, the printing machine speed will automatically drop to 20000 rpm, and then it will be cleaned. After cleaning, it will automatically return to the normal printing speed to continue production

2. Run down cleaning

run down cleaning is a cleaning method that starts automatically in the speed reduction phase. If the speed down cleaning mode is selected, the printer will immediately start the cleaning procedure after pressing the speed down stop button, and the cleaning will begin when the printing machine speed drops to 4000 rpm

3. Final washing

final washing the vast majority of plastic processing enterprises are based on domestic manufacturing equipment. It is a kind of cleaning suitable for independent printing units or a combination of printing units not connected with newspaper folding machines. It is suitable for use before changing ink or printing products. However, this method can be started only after the cleaning beam is selected on the console and the automatic cleaning function is selected on the operation panel of each printing unit

comparison of cleaning methods

the three cleaning methods of intermediate type, speed reduction type and final type have their own advantages in characteristics, and the operation methods are also slightly different. Now make a comparison from the following aspects:

1 Use

in the process of printing and production, once the newspaper is found to have quality problems due to the dirty surface of the rubber drum, and at this time, China's extruder industry has many beneficial conditions in foreign trade export, and the production time is also very urgent, you can choose the intermediate cleaning method. The advantage of this method is that it only needs to select the rubber drum to be cleaned on the console, and it can be cleaned at a high speed of 20000 rpm. It takes only dozens of seconds, and it does not stop the machine and keeps paper. After cleaning, it will automatically return to the current speed for printing. When cleaning the blanket, be sure to remove the waste newspaper

after printing a single product each time, the operator needs to clean all the rubber rollers to ensure the printing quality of the next product. At this time, the speed reduction cleaning method can be selected. This method is convenient and fast. It completes the cleaning task during the machine shutdown and speed reduction, making the printing process more compact and integrated

after the daily printing task, the operator needs to maintain the machine. At this time, the rubber system should be thoroughly cleaned. The final cleaning method is specially set for maintaining the machine

2. Effect

different cleaning methods are aimed at the rubber drum with different cleaning requirements, which determines the consumption of water and solvent in different degrees, and naturally has different cleaning effects. The final cleaning effect is the best, the speed reduction type is in the middle, and the middle type is the second. Among them, the final type and the reduced speed type can also set different cleaning degrees on the console according to different requirements, which can be selected from "slight", "standard" and "heavy" respectively. The intermediate type is only set with the "standard" degree. Based on the principle of saving printing consumables, the operator can set flexibly

3. Operation

intermediate and slow down cleaning methods can directly select objects on the console and start it, and the whole machine can be cleaned without breaking paper. If the paper breaks, stop cleaning immediately. The final cleaning method must select the object on the console, and the printing unit must be separated from the newspaper folding machine, remove the paper in the printing unit, and start directly on the operation panel of each printing unit. In addition, in order to make the production more compact, the reduced speed cleaning mode is also specially equipped with an automatic start function. Whenever a single task is completed and the stop button is pressed, the cleaning can be started, and the cleaning object is the printing unit currently working

4. Special function

the function of locking the cleaning beam is used to lock some individual cleaning objects so that they are outside the loaded program without starting cleaning

source: Printing Technology