China printing introduced a lot of advanced printing press. The printing press is a high degree of automation, printing speed, product quality good characteristics. But, with the increase of the use fixed number of year, equipment wear and the extent of damage increases, in addition to the natural wear, some parts is due to the operation of equipment conditions caused by the wear and damage to accelerate. If the printer normal maintenance, maintenance cannot proceed, will make the technology of equipment performance, thus reduce down the printing quality. Improve equipment reliability, ensure the quality of printing not decline, production running smoothly and reduce the loss caused by maintain undeserved, these are further explained the printing equipment maintenance is of great importance.
The following equipment maintenance fully explain the importance and necessity of:
1, fuel
In oil production equipment, the lubrication is the equipment maintenance work is an important part of. Keep printing machine oil flow, relates to the activities of the machine parts lubrication. Must be replaced periodically oil and cleaning oil filter device, the oil pipe be into free from oil, avoid part jam. Special is a unit of supporting roller needle bearing, if no oil lubrication cooling, can make the bearings and cylinder shaft long dry friction, wait until abnormalities are found, axes and bearing inner circle have plywood. Light person changing inner circle; The person that weigh of cylinder shaft seriously damaged.
2, mechanical Angle
From mechanical Angle, only equipment operators to strengthen the maintenance, the machine mechanical moving parts clean lubrication, flexible operation, and to bring into full play the technology of equipment performance, keep equipment in good condition. Use of printing machines Heidelberg people know, Heidelberg color printing machine more than the ink forme roller and water roller bearing and the surge is a easy to wear worm, printing ink especially easy to accumulation and its rise and fall in housing agencies and worm seat, especially printing ink crew to the gold and silver, if can't clear in time, time is long, metal particles will accelerate the bearing a worm or wear. Generally the wear of ink forme roller bearing in the walls come down from machine to spend several hours because housing is to use axle gear circle in the rise and fall of fixed institutions, the space is very narrow, only a few centimeters of the loose position, to use reflector to find the ring on block two holes, take out a block housings and reinstall circle and institutions are also very time consuming. Installation of a water roller case also is same. Many different colors offset printing presses, the installation of a worm surge different ways: one kind is fixed a fixed bolts from outgoing machine of the lock wall fixed (more); and [para5] Another is fixed to the wall from machine bolts lock (most use this way), space position narrow, installation, maintenance difficulties. If the staff know this, maintenance, maintain clean at ordinary times frequently, the machine, the accumulation of ink cleared, we don't need to change frequently the bearing and a worm. This can not only reduce down time and improve production efficiency, and can save the replacement of parts cost.
In order to prevent prints the ceng dirty, offset printing machine general use of the spray powder. If the spray powder amount is too big, and can't clear in time word, also can cause some fault, such as the paper automatic lifting devices failure of paper sucking the institutions, slowing damage. Worth mentioning is the offset press paper receiver device of Heidelberg breathe in slow wheel, if axles and breathe in deceleration zone surrounding the spray powder can't keep clear of words, the spray powder and mixture oil sludge, time grew sludge they stick to breathe in the slowdown cannot turn. To protect drive axle of motor, slow turning slow down the agency within the gear was forced to stripping or sweeping teeth. And motor and and education version system circuit fault, once the machine would be stalled. To eliminate the fault will need to be a new gear up. So, usually to clean these agencies, otherwise, the machine can print thick the support role-if, for printing flimsy breathe in slow wheel doesn't work, it will cause paper receiver orgnaization happening disorderly paper phenomenon, reduce the production efficiency.
3, electrical
Heidelberg with many safety device, offset printing machines and are very sensitive, as long as slight touches, all the machine will stop working. Sometimes the electric control box machines internal relay contacts dust pile up too much in, cause relay contacts, touch bad machine can't work.
And many other similar problems, such as motor dust accumulation in too many images of carbon brush frame and reset, and moving images of carbon brush on spring carbon brush compaction force, make carbon brush and copper head poor contact profile, also can cause machine difficult.
4, gas path
In the 80 s produced four color, 5 color offset printing presses are using start device to control roller clutch pressure, ink forme roller, water roller from the ink roll by version and the ink such action. Many of the color printing press each unit has several two five control valves control these actions, through the control valves control cylinder piston sport can realize ink forme roller, water roller on the version and the ink from the ink roll such action. Sometimes, because there were water pump control valve or cause air valve seal, and cause damage control valve or cylinder leakage, makes ink forme roller, water roller by version from well. In addition, the ink in action control agencies accumulation, cause these moving parts not flexible movement, aggravate the control valve and the burden of the pump, lead to control valve seal, the piston pump more vulnerable deformation. In addition, because gas path hose aging, pipe leakage, line pressure to drop quickly, make the control valves can not open, also cannot complete clutch pressure action. If increase pressure, will be the life of the compressor image to further accelerate the aging hose, so only by air valve or the change of air pressure to solve the problem of poor organization rise and fall, not thoroughly, often clean the movements institutions maintain flexibility, guarantee, operation of gas path not leak, not water is in the long run.
All of these problems are usually caused by the maintenance is bad, so to strengthen the maintenance, make daily, weekly and monthly maintenance is very important, it not only can prolong the service life of the machine, also can improve the production efficiency.