Maintaining and maintaining offset printing equipment to maintain a good accuracy and working condition has an extremely important role in giving full play to the potential power of equipment, improving the quality of printed matter, prolonging the service life of offset printing equipment, and reducing machine wear. It is necessary for every operator and maintainer of offset printing equipment to maintain and maintain good offset printing equipment and strive to improve the integrity of the offset printing equipment and maintain the matching accuracy of the machine.
Offset printing equipment includes offset printing plate making equipment and offset printing printing equipment, which are similar in maintenance and repair.
The maintenance and repair of the offset copying machine and the printing machine are basically the same. It must be maintained properly to keep the equipment in a good working condition for a long time. Therefore, the following aspects need to be achieved: work.
1. The offset copying machine and the printing machine must be installed in a clean and tidy working environment first. Under conditional conditions, indoor air-conditioners and humidifiers should be installed. The work environment of the control shop should be constant temperature and humidity.
2. Keep the function of the vacuum pumping system intact. The vacuum pump should be checked once a month; the oil level should always be aligned with the oil level line; after one year of work, it must be completely replaced with new oil. Vacuum oil must be added to the vacuum pump. Do not use other types of engine oil instead of vacuum oil. Affect the suction vacuum effect.
3. The blanket frame of the copying machine and the printing machine is moistened with glycerin once a week to keep the rubber elastic and prevent the frame of the blanket from leaking after being dried and cracked. When the machine is not in use, cover the blanket with a blanket, or wrap it with a large cover cloth to prevent dust from entering.
4. Keep the surface of the copying machine and the printing plate glass table absolutely clean, free from dirt, grease, dust, wipe with a soft brush, then wipe with a skim gauze and anhydrous alcohol. The reflective glass of the copying machine and the reflector of the printing machine should be kept clean and reflective.
5, to maintain the integrity of the exposure light source. The iodine lamp of the printing machine is generally between 2000-3000W. If the printing work is too long, it will be hot. When the printing plate is busy, the second shift will be performed. The working time is long, especially in the hot summer weather conditions. Keep the iodine lamp cooling device working properly; the second is to have an air conditioning device in the room to prevent the machine from heating and burning the device. In addition, the iodine lamp has a service life, and it should be replaced in time after being used for a period of time to prevent the luminescence intensity of the iodine lamp from being insufficient. It is not easy to grasp the exposure time and affect the quality of the printing plate.
Because the copying machine suction exposure is operated in the dark room with dark light, the film photosensitive material is subjected to copy exposure in a confined condition, and the exposure light source is faulty (such as the exposure light bulb does not light) is often not easily found, so usually Check often.
The maintenance and repair of offset printing machines 1. We must formulate rules and regulations for the maintenance and repair of offset printing equipment and the technical safety of equipment, and a reasonable printing process, so that the awareness of safe and civilized production can be fully implemented in the mind of operators. Work practices, do a good job in the environmental sanitation of offset printing equipment, and create good working conditions.
2. The operator must have a profound understanding of the performance and structure principles, electrical appliances, and electrical controls of the equipment he has mastered. The operator has the ability to read the circuit diagram of the offset printing machine, so that he can skillfully and correctly adjust the machine. Rational operation.
3, due to the speed of offset printing equipment in the high-speed operation of 6000 sheets / hour, faster wear and tear. To do regular and quantitative lubricant filling before work every day to ensure the smooth flow of oil, regularly check the wear of major components and wearing parts to prevent sudden damage to the machine.
4, to ensure that once a year overhaul, strengthen and improve the usual minor repairs, choose a good replacement of parts of the material, so that the spare parts of the offset press have sufficient spare parts for replacement.
5, usually on the offset press should establish a variety of technical file information management, carefully register the original maintenance records of the offset press, all kinds of wear, repair parts, electrical equipment, the specific situation, the reasons for each repair equipment failure, collect and eliminate Equipment failure measures and measures, from which accumulated rich maintenance experience, zero, component maintenance of various circuit electrical devices provide detailed technical information.
The circuit and electrical equipment maintained and maintained by the offset printing press are more complicated and there are many machine parts. The following components are mainly inspected.
1. The nozzles and rubber gaskets of the paper feeding system are blocked by the paper dust for a long time. As a result, the suction is insufficient and the paper cannot be sucked. The rubber gasket will crack in a long time. The wear and elasticity of the paper feed belt, the lifting traction magnets and contacts of the stacking table, the grippers and their springs, the delivery of the teeth and their springs, the pressure of the paper brush, the brush wheel and so on.
2. Plate clamping plate on the plate cylinder, the level of the fixed adjustment screws and the degree of fastening of the plate, and the clamping screws of the platen plate of the rubber platen to avoid the accident that the screws are loosened and broken and the rolling roller is broken.
3, the former standard self-locking mechanism, double-sheet controller, the delivery chain and its adjustment screws, water, ink roller and its parts on the bearings, other parts of the paper.
4. The parts that are easy to loosen and fall off are the adjusting and fixing screws of the grippers and the paper feed teeth, the adjusting screws of the water roller and the ink roller, the pins on the delivery chain, and the hexagonal screws on the plate cylinder.
5, the most easily worn parts are bearings: rolling bearings, sliding bearings. In addition, due to the offset printing into the paper, there are many dust, anti-dusting back dust, electrical appliances also attract dust when working, the offset box in the offset box, contactors, relays, transformers and other electrical components, and transmission The electrical contacts of the traction magnets on the stacker of the paper system are easy to stick to the dust. If there are dust on the electrical contacts, it will cause the contacts to be in bad contact, and the arc will occur. The electrical contacts will be in poor contact and the electrical coils and components will heat up. Overloaded and burned electrical appliances, offset press can not operate normally. Therefore, the offset printing paper should be hung and adjusted to handle, and the paper gray should be blown off. The power distribution cabinet and the paper feeding part of the offset printing machine should be kept as clean as possible, and the dust should be cleaned in time to prevent the dust from falling down to the electrical equipment for a long time.
6, carefully check the tubing, oil eye, oil cup, oil pump and its components must be open.
Offset maintenance and refueling should pay attention to the problem:
1, before the day to start a regular quantitative refueling, be sure to cut off the power in the case of refueling to avoid the risk of electric shock.
2, in accordance with the order of refueling, from the paper, stamping, receiving the three major parts of the order of refueling, do not miss any refueling oil holes and components.
3, try not to refuel in the operation of the machine, to avoid the oil nozzle impinged on the machine rolling down the machine and personal safety accidents.
4, do not add the wrong lubricant. Vacuum oil, engine oil, butter, varnish, and other oils should be placed in a regular and orderly manner. Offset air pump, printing machine, copy machine vacuum pump plus vacuum oil; high-speed parts plus oil, low speed operation plus butter.
5, should pay attention to the degree of oil cleanliness, oil patency, in the offset printing plate, rubber, embossing three roller parts are generally selected rain lubrication, the oil pump will be the oil pool of oil, a steady stream of pumping up It rains and pours on parts that are lubricated or cooled. Therefore, the oil is required to be clean, free from dirt, and scrap iron. Once a year, the oil pool in Henan province is regularly replaced with new oil to ensure the smooth flow of oil and the normal operation of the oil pump.
6, add grease (commonly known as butter), use the pressure oil gun to identify all the positions to increase, fill the butter parts only for low speed, heavy load, intermittent movement, and can not often be added to the oil, do To not increase. (Wang Xincheng) (From "China Packaging News")
Offset printing equipment includes offset printing plate making equipment and offset printing printing equipment, which are similar in maintenance and repair.
The maintenance and repair of the offset copying machine and the printing machine are basically the same. It must be maintained properly to keep the equipment in a good working condition for a long time. Therefore, the following aspects need to be achieved: work.
1. The offset copying machine and the printing machine must be installed in a clean and tidy working environment first. Under conditional conditions, indoor air-conditioners and humidifiers should be installed. The work environment of the control shop should be constant temperature and humidity.
2. Keep the function of the vacuum pumping system intact. The vacuum pump should be checked once a month; the oil level should always be aligned with the oil level line; after one year of work, it must be completely replaced with new oil. Vacuum oil must be added to the vacuum pump. Do not use other types of engine oil instead of vacuum oil. Affect the suction vacuum effect.
3. The blanket frame of the copying machine and the printing machine is moistened with glycerin once a week to keep the rubber elastic and prevent the frame of the blanket from leaking after being dried and cracked. When the machine is not in use, cover the blanket with a blanket, or wrap it with a large cover cloth to prevent dust from entering.
4. Keep the surface of the copying machine and the printing plate glass table absolutely clean, free from dirt, grease, dust, wipe with a soft brush, then wipe with a skim gauze and anhydrous alcohol. The reflective glass of the copying machine and the reflector of the printing machine should be kept clean and reflective.
5, to maintain the integrity of the exposure light source. The iodine lamp of the printing machine is generally between 2000-3000W. If the printing work is too long, it will be hot. When the printing plate is busy, the second shift will be performed. The working time is long, especially in the hot summer weather conditions. Keep the iodine lamp cooling device working properly; the second is to have an air conditioning device in the room to prevent the machine from heating and burning the device. In addition, the iodine lamp has a service life, and it should be replaced in time after being used for a period of time to prevent the luminescence intensity of the iodine lamp from being insufficient. It is not easy to grasp the exposure time and affect the quality of the printing plate.
Because the copying machine suction exposure is operated in the dark room with dark light, the film photosensitive material is subjected to copy exposure in a confined condition, and the exposure light source is faulty (such as the exposure light bulb does not light) is often not easily found, so usually Check often.
The maintenance and repair of offset printing machines 1. We must formulate rules and regulations for the maintenance and repair of offset printing equipment and the technical safety of equipment, and a reasonable printing process, so that the awareness of safe and civilized production can be fully implemented in the mind of operators. Work practices, do a good job in the environmental sanitation of offset printing equipment, and create good working conditions.
2. The operator must have a profound understanding of the performance and structure principles, electrical appliances, and electrical controls of the equipment he has mastered. The operator has the ability to read the circuit diagram of the offset printing machine, so that he can skillfully and correctly adjust the machine. Rational operation.
3, due to the speed of offset printing equipment in the high-speed operation of 6000 sheets / hour, faster wear and tear. To do regular and quantitative lubricant filling before work every day to ensure the smooth flow of oil, regularly check the wear of major components and wearing parts to prevent sudden damage to the machine.
4, to ensure that once a year overhaul, strengthen and improve the usual minor repairs, choose a good replacement of parts of the material, so that the spare parts of the offset press have sufficient spare parts for replacement.
5, usually on the offset press should establish a variety of technical file information management, carefully register the original maintenance records of the offset press, all kinds of wear, repair parts, electrical equipment, the specific situation, the reasons for each repair equipment failure, collect and eliminate Equipment failure measures and measures, from which accumulated rich maintenance experience, zero, component maintenance of various circuit electrical devices provide detailed technical information.
The circuit and electrical equipment maintained and maintained by the offset printing press are more complicated and there are many machine parts. The following components are mainly inspected.
1. The nozzles and rubber gaskets of the paper feeding system are blocked by the paper dust for a long time. As a result, the suction is insufficient and the paper cannot be sucked. The rubber gasket will crack in a long time. The wear and elasticity of the paper feed belt, the lifting traction magnets and contacts of the stacking table, the grippers and their springs, the delivery of the teeth and their springs, the pressure of the paper brush, the brush wheel and so on.
2. Plate clamping plate on the plate cylinder, the level of the fixed adjustment screws and the degree of fastening of the plate, and the clamping screws of the platen plate of the rubber platen to avoid the accident that the screws are loosened and broken and the rolling roller is broken.
3, the former standard self-locking mechanism, double-sheet controller, the delivery chain and its adjustment screws, water, ink roller and its parts on the bearings, other parts of the paper.
4. The parts that are easy to loosen and fall off are the adjusting and fixing screws of the grippers and the paper feed teeth, the adjusting screws of the water roller and the ink roller, the pins on the delivery chain, and the hexagonal screws on the plate cylinder.
5, the most easily worn parts are bearings: rolling bearings, sliding bearings. In addition, due to the offset printing into the paper, there are many dust, anti-dusting back dust, electrical appliances also attract dust when working, the offset box in the offset box, contactors, relays, transformers and other electrical components, and transmission The electrical contacts of the traction magnets on the stacker of the paper system are easy to stick to the dust. If there are dust on the electrical contacts, it will cause the contacts to be in bad contact, and the arc will occur. The electrical contacts will be in poor contact and the electrical coils and components will heat up. Overloaded and burned electrical appliances, offset press can not operate normally. Therefore, the offset printing paper should be hung and adjusted to handle, and the paper gray should be blown off. The power distribution cabinet and the paper feeding part of the offset printing machine should be kept as clean as possible, and the dust should be cleaned in time to prevent the dust from falling down to the electrical equipment for a long time.
6, carefully check the tubing, oil eye, oil cup, oil pump and its components must be open.
Offset maintenance and refueling should pay attention to the problem:
1, before the day to start a regular quantitative refueling, be sure to cut off the power in the case of refueling to avoid the risk of electric shock.
2, in accordance with the order of refueling, from the paper, stamping, receiving the three major parts of the order of refueling, do not miss any refueling oil holes and components.
3, try not to refuel in the operation of the machine, to avoid the oil nozzle impinged on the machine rolling down the machine and personal safety accidents.
4, do not add the wrong lubricant. Vacuum oil, engine oil, butter, varnish, and other oils should be placed in a regular and orderly manner. Offset air pump, printing machine, copy machine vacuum pump plus vacuum oil; high-speed parts plus oil, low speed operation plus butter.
5, should pay attention to the degree of oil cleanliness, oil patency, in the offset printing plate, rubber, embossing three roller parts are generally selected rain lubrication, the oil pump will be the oil pool of oil, a steady stream of pumping up It rains and pours on parts that are lubricated or cooled. Therefore, the oil is required to be clean, free from dirt, and scrap iron. Once a year, the oil pool in Henan province is regularly replaced with new oil to ensure the smooth flow of oil and the normal operation of the oil pump.
6, add grease (commonly known as butter), use the pressure oil gun to identify all the positions to increase, fill the butter parts only for low speed, heavy load, intermittent movement, and can not often be added to the oil, do To not increase. (Wang Xincheng) (From "China Packaging News")
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