Webflex Machines is known as popular Rotogravure Printing Machine manufacturer in India because of its robust construction as well as smooth operations. The robust construction and smooth execution of jobs are strong features of this machine. Inking tanks can be easily removed and cleaned, which helps to save time during production of multi color printing jobs. Apart from manufacturing Heavy Duty Rotogravure Printing Machine, we also manufacture Light Duty Rotogravure Printing Machine. We also export these Rotogravure Printing Machines from India to our global customers.
SPECIFICATIONS OF HEAVY DUTY ROTOGRAVURE PRINTING MACHINE-
CONSTRUCTION of Heavy Duty Rotogravure Printing Machine: Moulded CI frames of total thickness of 70 mm with wall thickness of 25 mm duly machined to close tolerances inter connected by cross beam & tie rods for vibration free performance consists of printing cylinder shaft, impression roll, compensating roll, idlers, doctor knife, unit dryers, ink pan, drying unit etc.
UNWIND: This unit consists of ball bearing assembly to accommodate a shaft with tapered reel cones to accept standard cores. Arrangement for lateral displacement with mechanical clutch are provided at such points at operators ease. Sufficient idle rollers are provided to ensure perfect web tension.
PRINTING UNIT: It consists of cylinder unit, impression rollers and doctor blade unit which are easily removable for changing, working and for making ready. Doctor blade holder are easily removable for sharpening and replacing blades. Oscillating doctors knife’s position and angle is adjustable according to the dia. of printing cylinders. Fitted on low friction gun metal bushing with mechanical oscillation off the gear box drive All units of blades are equipped with devices for oscillation and change of angles of blade to suit dia of cylinders. Pneumatically operated Rubberized impression cylinder is precision ground and are free on bearing to give perfect impression, which can be engaged or disengaged from operating side after presetting. Each station has its own individual body mounted control panels for monitoring registration, blower heater control, rubber roll movement and emergency stops.
Some More Salient features of Heavy Duty Rotogravure Printing Machine :
MOTORISED REGISTER CONTROLS: Mechanical devices for cross as well as lengthwise registration is provided at the operating side to ensure fine register of multi-colour prints at operational speeds while the machine is in operation. Longitudinal registration done by either compensating roll moving up and down on linear screw system with servo motor or by SS roll cantilevered by screw and slo syn motor operated by individual push button controls at the unit of by controls at the individual panel board.
PNEUMATICALLY ACTIVATED RUBBER ROLL IMPRESSION: -Free printing pressure roll of NBR roll of dia. 150mm and hardness 65-70 is engaged by pneumatic cylinder with left and right pressure regulators. Air cylinders 65 dia x 100 strokes. Rubber roll hollow type with both end bearing mounted.
INKING UNIT:- Immersion Type Inking System of One No. Stainless Steel Ink Tray on each station duly adjustable in height to cover the full range of printing cylinder Mounted on a horizontal base for easy removal & cleaning operations.
GEAR BOX of Heavy Duty Rotogravure Printing Machine: Spiral Bevel reduction/oil immersed, fixed at the unit side frame along machine. Mechanical drive for alternate transversal movement of the Doctor blade with adjustable stroke of +/- 9mm. Reverse Printing Facility provided on selective Printing Stations for Reverse Printing.
REWIND UNIT: Printed web is duly wound on the shaft made of allow steel on a paper core duly locked by tapered cones provided in the shaft. The shaft is mounted on the ball bearing assembly. The rewind shaft is driven by friction clutch mechanical assembly, which controls the web tension on the film, which ensures perfect and tight rewinding without stretching the film. Full width lay on roller to assist rewinding from core to maximum reel diameter.
DRYING CHAMBER: The drying chamber consists of specifically designed air blowers with built in chambers for heater. Drying chamber is incorporated at each printing unit and the hot air is blown from 2 HP Cap Blower with 9KW heaters channeled to the drier hoods. Specially designed jet nozzles are provided to blow air across width of web supported by idlers in Front of the nozzles. The hot air is uniformly blown from the nozzles at different positions resulting in inter-colour as well as complete drying of inks at all operational speeds.
DRIVE: Main drive is by DC variable speed motor of reputed make and with DC variable speed control panel consisting of rectifier, voltage indicator, amps meter, re-start interlocking system etc. and is housed on an M.S. Steel cabinet, with all control switch etc. mounted on the sloping top of the panel for easy operation
WEB ALIGNER (OPTIONAL): Web Materials are fed from a reel to the machine, processed and then rewound. During these stages various position errors like web offset on reel change, incorrect wound reels, staggered errors or lateral shift during production occurs. These guiding systems are designed to eliminate these positioning errors and they ensure precise web alignment throughout the process. EPC (Edge Position Controls) are provided with power pack electronic controls, pneumatic cylinder, edge sensor, etc at the unwind unit and before rewind unit of either E+L or Reputed make. (Optional)
AUTO TENSION CONTROL (OPTIONAL): Clutch Based Eddy Current Drive / Brake driven by AC motor controlled output synchronized with machine through load cell censors, digital tension controllers etc of reputed make. Web tension control is to assure constant tension level between unwind and infeed nip and outfeed nip and winding unit. Constant tension results into uniformly high standards of product quality.
SPLIT UNIT FACILITY (OPTIONAL): Split Unit Facility to run the machine to print 2 different jobs at the same time. This option gives you the benefit of using your machine as 3 colour and 2 colour individual printing machine with their individual electrical and mechanical controls. An additional benefit to increase your production and make the optimum utilization of your idle printing stations.