In order to extend the service life of the offset press and effectively improve the printing quality, the most important issue is to strengthen the repair and maintenance of the offset press.
1. The production management system should include the following:
â‘ The cleaning management and the system of lubricating and offset printing equipment stipulated in order to reduce the wear of machine parts.
â‘¡Safety operation regulations stipulated to prevent damage to machine parts.
â‘¢ In order to eliminate the hidden danger of the machine accident in time and replace the naturally worn parts of the machine in time, the regular inspection and regular maintenance system is prescribed.
2. Pay attention to several points when adding oil to offset printing equipment:
â‘ Turn off the power when refueling the parts that need lubrication, do not refill when the machine is turned on, to avoid the machine or personal accidents caused by the oil nozzle being caught in the machine.
â‘¡ Add oil in a certain order according to paper transfer, rules, water transfer, ink transfer, embossing, and paper collection, and don't miss any oil hole that should be oiled.
â‘¢Do not add the wrong lubricating oil, avoid adjusting the oil as the engine oil, and the accident of the machine biting due to the wrong oil.
â‘£ Pay attention to the cleanliness of the oil. The oil is not clean and there are impurities. It should be filtered to prevent iron chips and dust in the oil from wearing the machine and ensuring the smoothness of the oil pump's oil path.
3. To maintain and maintain the offset printing equipment, the operator and repairer must do the following:
â‘ The operator must have a deep understanding of the performance and structural principles of the offset printing equipment, so as to be skilled and correctly adjusted to ensure the reasonable operation of the machine. Troubles in the offset press should be eliminated in time to avoid sick operations.
â‘¡The environmental sanitation around the equipment in the offset printing workshop should be kept neat and tidy, and create a good working environment, so that all employees can cultivate a good habit of civilization and hygiene.
â‘¢ Lubricating oil is added regularly and quantitatively. Since the speed of the offset printing equipment is running at a high speed of 5000 sheets / h, refueling has two functions: one is lubrication; the other is cooling. To ensure the smooth flow of oil. Regular inspections should also be conducted to check the wear of the main components to avoid damage to the machine due to sudden problems.
â‘£The offset printing workshop should formulate a set of implementation rules for equipment management, institutionalize and standardize equipment management, and strictly abide by the safety technical operation regulations.
⑤ Strengthen the usual minor repairs, choose the materials for replacement parts, and do the spare parts work for vulnerable parts, in order to shorten the maintenance time, improve the equipment utilization rate, and ensure the intact rate of offset printing equipment.
â‘¥ For each offset printing equipment, a technical file should be established, detailing the wear and tear of various maintenance parts, analyzing the reasons, making corresponding conclusions, and accumulating experience from them. Provide technical information for equipment overhaul, and also provide reliable data for repair quality standardization.
⑦Improve the ability to read pictures, understand the operating instructions of offset printing equipment, electrical schematics of offset printing equipment, master the use and maintenance of the electrical drive and control parts of the host, the principle of electric drag, the drawings are engineering language, only understand the drawings Only on the basis of the above, can the offset printing equipment be repaired, and do not blindly disassemble electrical components.
4. In order to eliminate the hidden dangers of equipment accidents in time, each offset press is regularly repaired once every six months and overhauled throughout the year. A comprehensive inspection and analysis of the offset press is carried out. The main inspection items and contents are as follows:
Items to check:
â‘ The air pump and suction blower of the paper conveying system. Fill the air pump with vacuum oil in time. There should be no dust fibers, dirt, etc. in the rubber tube wall of the air conveying to keep the air path smooth.
â‘¡The tightening degree of the paper teeth and their springs, the paper teeth and their springs, and the fixing adjustment screws of the plate clamping plate, etc., so as not to damage the rollers due to the jumping out of the screws or plate clamping.
â‘¢ Front gauge self-locking mechanism, double-sheet controller, safety bar on the cardboard and bearing on the ink roller, to prevent the ball from falling into the gear and causing the machine to be damaged after the bearing is broken.
â‘£Paper receiving chain pins and adjusting screws, water rollers, ink rollers and other rubber rollers and their components, bearings, paper machine parts and paper board parts, etc.
What to check:
â‘ First, check the parts that are easy to loosen. Due to the high-speed operation of the offset press, the most easily loosened and detached parts are the adjustment and fixing screws of the paper teeth and paper delivery teeth; the adjustment screws of the water roller and ink roller; Pins, and pins on the delivery chain.
â‘¡Check the bearings. The worn bearings are the most prominent. The parts with severe wear are: roller bearings, gear bearings, balancing cam bearings, and bearings on both ends of the ink roller. Worn bearings and gears must be replaced in time, otherwise it will cause equipment failure.
â‘¢ Check whether the oil pipes, oil eyes and other oil passages are unblocked, and if the blockage is found, it should be eliminated in time.
â‘£Check the paper feeder lifting iron traction, paper feed support pin, and oil pump core shaft and other parts. These parts are likely to break, so the parts that are easy to break should be updated in time.
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