1. Max printing length:1100mm (diameter of the roll 350 ) 2. Min printing length:315 mm (diameter of the roll 100 ) 3. Printing speed : 10-90m/min 4. Printing width :800mm 5. Oven heating power : 62 KW 6. Total power:72 KW 7. Weight (6colours)11,500KGS 8. Overall dimension: 9,500mmX2,250mmX2,500mm
Main structures and working principle
The whole set is composed of the printing unit, unwinding unit and rewinding unit, they have the same structures. Adopting a frequency motor to drive every unit. Adopting vector motors for traction and rewinding.(see picture one) 1. Unwinding unit Mainly composed of the unwinding roll(B), autoloading turning frame, trig device and turning outfit.Riveting the raw material on the unwinding roll when printing,there are magnetic powder breaks installed on the end of the unwinding roll,adjusting the electricity to control the unwinding tension. Raw material A and B are installed separately on the both ends of the autoloading turning frame. When A is working ,so B is standby .When A is going to working, the handwheel(02) make the turning frame from B position to A position through worm(03)and worm wheel(04),so B is working soon. That can keep the continuity of the printing. There are bolts installed on one end of the unwinding roll(05),driving the roll to adjust the winding through tumble axletrees(06),aiming at rewinding roll worked on one line. In order to the constant tension of the film when printing,the magnetic powder break will control the unwinding tension which be installed beside the unwinding roll. 2. Unwinding traction unit(see picture three) Unwinding traction is dual-roll style, include in steel roll ,rubber roll and tension controller system. Rubber roll the printing material press on the steel roll tightly when printing, then adjust the tension. 3. Printing unit (see picture four) Mainly composed of transmission device, ink filling device, ink scratch device ,press device, tension device, oven device, reverse printing device.. A. Transmission system(see picture five) Main motor------Frequency motor, connect with the long roll after retardment ,that can make all the printing roll working at the same time. The cluth is composed of the trigon gears,the aim is improve the colours accuracy. B. Ink device Composed of ink pump, ink trough and ink barrel. The ink pump will suck out the printing ink from the barrel then pump into the trough. The printing roll turns with the ink. The ink reflow back to the barrel when its capacity is excess, the pump will pump the ink into trough. So that is a ink circulation system which ceaseless. Ink trough have the lifter function to suit the many different size printing rolls, simple sleaning, handwheel need to drive the dual-rocker device up to the degree which demanded C. Scratch ink device(see picture four) It's function is scratching the ink which rest on the surface of the printing roll. Mainly composed of the knife rest and tension added device. The knife rest can adjust the knife any height and degree freely. The deftective wheel can drive the knife rest moving ,so that, the knife will be moved with the knife rest together. That can make the design clearner, resolve the problems of the uneven abrasion in edge. The air pressure adjusts both of the knife and printing roll. Knife pressure should be debased at the nadir ,in order to reduce the fulsome abrasion of edge. The knife should be off printing roll once the printing done. D. Pressing printing device Composed of a roll which carved reseau, chromeplates and a roll,whose surface is enwrapped colloid. The printing roll dip in the printing ink partly with turning when working,the roll touch the printing ink, at this moment, the knife scratches the refundant ink. The printing material get across between printing Roll and colloid roll,the dear arrangement design is emerged. E. Redeeming roll Redeeming roll adopting swing pattern. The motor and nut drive the roll moving ,soon reactivity ,high accuracy. F. Oven device Composed of the electrothermal pipe and motor. When the film get through the oven, the motor indraught hot wind, in order to dry the ink in the film surface urge the impregant to volatilized Automatic temperature controller control the oven temperature, keep constant. G. Printing gear box Double helix gear within box drive the power from main motor to tear need lube to work better. 4. Rewinding traction unit Used for tracting the printing film,when rewinding .Mainly composed of the tracting roll, rubber roll and vector motors. The vector motors can keep tension and line speed constant, steady and good quanlity. So, the vector motors send the constant power to traction roll. Using rubber roll make the printing film cling on the traction roll. We can adjust the voltage to control the moment power. The adjustment must be assort with rewinding tension. 5. Rewinding unit Mainly composed of vector motor rewinding seating ,turning frame, turning device and rewinding roll. Adjusting the tension trough adjusting the voltage, and tauten the printing film, make the handwheel and the winding roll in a line. Automatic connection initialized the rewinding length when printing .When rewinding length is close to the enactment length, we should install B paper roll in the turning frame, stick double-face adhensive tape, start-up the turning motor, like the attachment, so the shift works is done at this moment. 6. Lubricate system 6.1.Dropping the several 20# oil into each iron chain twice every shift. 6.2. Dropping the several 20# oil into each moving roll joint twice every shift. 6.3. Dropping the several 20# oil into gear twice every shift. 6.4.Dropping the oil once to oil-cup every shift. 6.5.Changing the oil in the gearbox every half of the year. 6.6.Dropping the oil once every week into the guide roll axletree. 6.7. Dropping the several 20# oil into each worm wheel and worm once every shift.
Installing and adopting
In view of the long whole set length ,we should depart the set into 2 parts for packing in order to suitable before installing transportation. The machine should be set on a horiaontal ground. Firstly, install each unit like unwinding, printing. rewinding in order.Secondly,connecting moving roll,setting mantle and strap.Finally,connecting the electrical wire.
After finishing the installment ,we should inspect whether all the parts intact and credible. Connecting the electrical source after dropping oil into each lubricative parts.Then the operator can start-up the machine for trying turning.If there is something unusual,stop to check-up.If not,we can unwinding the printing film for trying.
Using and adjustment
A. Preparement before printing After all the trying operation is well, install printing roll and draw knife on the each printing unit, adjust scratch device, drawknife and roll surface is as well, keep 30-80 degree. After that, setting canisters in the unwinding and rewinding units respectively. Spread the films, drill through each printing unit in order, rolling on each rewinding caniste, operate the rubber roller pressing the films tightly on the draction roll, operation rubber roll make it pressing tightly with proof, adjust the pressure well, enact automatic rewinding device meter account .We should start-up the main motor at a slow-speed, adjust the draction when prnting and moment, make the tension and printing speed synchro,filling full printing ink into ink slot. At that moment, the distance between oven and films, must be proper,the heating and hot wind from oven, so the temperature of the oven must be well-balanced. B. Trying and adjusting Trying operation at a at a slow speed, adjusting cluth and redeeming roll, make printing conister aim at examining remaks-mark line, adjusting pressure of each printing canister. So that the printing ink will be printed on the films adequately until get the clear designs. Adjusting scratch device again, so ,the blank parts of the designs will be cleared. The tension is important ,so tension will lead films to be metemorphic .No other than carrying adjusting adjustment point, the printing speed will be natural with elevating of the motor.
Maintenance The machine must be vindicated well in order to produce good quanlity finished products.Operators must be trained before manipulation ,not only be familiar with printing artwork,but also understand basic construction of the machine, working principle and correct. All parts of the whole set must be inspected across-the -board, must dripping some oil into the parts. In the working process, operators must inspect the parts often, if some noises from axletrees, must to stop to inspect. Then restart the set after resolving the problems. After off duty,the operators have to cut off the electricity. Clear up the machine ,disentwine rubber roll, clean desing roll and knife, do not forget to add to oil into the parts.
Electric controller system The whole set adopting 380V,50HZ AC electrical source, check the attachementsElectrical Principle Design. After setting the machine, start-up the main motor, adjust the knobs, make the main motor turning at a slow speed,if the turning direction is contrary ,stop machine immediately.
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