Duplex Centre Wind : Slitter Rewinder DCW 800 The DCW 800 duplex centre wind slitting machine is a new generation
of slitter rewinder designed to overcome the weaknesses of existing
equipment. The DCW 800 slitter is the result of years of experience
in both the design and operation of slitter and rewinder equipment.
It has been designed without compromise to combine the requirement
for a highly productive slitting machine with the need to produce
products of the highest quality.
Ease of Operation All aspects of the machine operation have been refined to maximise product quality and consistency whilst minimising down time. The modular construction allows a range of options to be easily integrated into the machine construction. Touch Screen Operator Interface
Advanced Drive and Control System The DCW800 has the latest Siemens digital drive and control system.
The Total Tension Control System (TTCS) has been developed by Universal Converting Equipment to overcome the deficiencies of alternative systems and so provide the ultimate tension control system. On most slitting machines the material tension will vary during the acceleration and deceleration phases due the energy required to overcome the inertia of the reels and the dynamic loses of the drive system. Without feedback of the web tension it is not possible to correct these tension shifts. TTCS is a "closed loop" rewind tension control system. Load cells provide feedback of the actual rewind tension and this is compared with the required tension. Through the use of digital technology, the drives make adjustments in milliseconds to maintain the required tension profile and ensure high quality of slit reels. The operator interface displays the required tension and the actual tension of both rewinds and the unwind. This data is generated by these motors is logged to the system memory and historic data can be viewed. Alternatively, this data can be saved via an Ethernet link to an external PC allowing a complete record of the tension profile of all rolls produced to be retained. The DCW 800 has a "fast stop" emergency stop system which will stop all drives in under one second from maximum speed. The safety circuit is dual circuit with redundancy to conform to current regulations. Emergency stop buttons, trip wires and light guards are fitted in the appropriate places and the machine is fully guarded. Energy Efficiency The drive system used on the DCW 800 slitter rewinder has been designed to minimize energy usage. During most of its operation the motor on the main drive on the machine will be acting as a brake, as will the motor on a driven unwind if fitted. The DCW 800 links all the drives together so that the energy being generated by these motors will be used to power the rewind motor Total Integration All the systems on the machine are totally integrated with the main control
system ensuring that all information is shared. Set up of the guider, core
alignment and knife positioning are all through the main operator interface. Full differential rewind shaft The DCW 800 slitting machine is fitted with full differential rewind shafts so there is no need to position individual chucks each time the slit pattern changes. The Universal chucks grip the inside of the core. Differential control relies on the drive between the shaft and the inside of the core chuck. Other designs can rely on friction between the inside of the core and the chuck to create the drive. These systems require high specification core and are prone to dust generation when operating at high tension and side movement of the cores when operating at low tension. As with other aspects of the machine, Universal refuse to compromise quality through the use of inappropriate technology. The Universal DCW 800 slitter rewinder is the ultimate high quality, high productivity duplex centre wind slitting machine.
Universal Converting Equipment Limited Page updated on 25 March, 2005 Home About Service Training Contact Us Find Us News Slitting Rewinding X9 Hot Melt Coater Laminator Special Purpose Product Assembly Drive and Control System Upgrades Computacore Core Alignment Converter Guide 3 Digital Web Guide Automatic Knife Setting Differential Rewind Shafts Parts Differential Shaft Friction Washers Computacut Guillotine Controller Data Capture Adhesive Coat Weight Scanner |
