DHF5 1600-6 Servo Motor Driven Carton Pre-printing Press
1.Non-stop unwinder unit
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1.1 Unwinding structure features | l Unwinding unit 2 sets l Max unwinding diameter 1524 mm l Shaftless unwinding, the chuck has self-locking function when rotate l Equipped with 3 inch, 6 inch, 12 inch cylindrical step chuck, with chuck rotation self-locking device l Electric control arms around, move up and down, single arm around mobile convenient lifting paper rolls l Automatic paper connection speed is ≤ 150 meters/minute
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1.2 Unwinder control | l Equipped with automatic tension control system, including pneumatic brake, tension sensor and controller, electronically controlled switching valve l The current roll diameter can be displayed in real time, and the alarm roll diameter value can be set. Once current roll diameter achieve setting diameter, system will give alarm. l with fault analysis and record function
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1.3 Splicing system
| l Zero speed splicing. end-to-end splicing manner so that printing material thickness shall not be obviously increase l Vacuum suction, preset tape device which can realize two-side adhesion with tapes to ensure firm paper connection l With a new design, hob-type cutting device to achieve paper cutting l The paper cutting is specially designed to bevel to reduce the impact when the interface enters the printing
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1.4 Paper storage device
| l Equipped with paper storage device l Motor drive and electric eye detection for automatic storage l The fully closed loop control is adopted for the storage and tension control of the storage material so that the tension is stable l Multi-layer paper path design to reduce use area
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1.5 Roll loading | l Hydraulic system for lifting and loading of roll |
2. Infeed unit | |
2.1 Web guide system(Italy ST) | l Installed before printing station l Inspection: the edge precision ±0.02mm l Electronic web guide traction device. If there is any excursion in paper feeding, the system will have a constant and accurate adjustment. l Single side sensor for manual and automatic control and adjustment
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2.2 Web cleaning unit（British technology high pressure vortex） | l Double static rod design, first remove static electricity, then vacuum dust, then remove static electricity, used for cleaning printing materials l Through high-pressure fan to form a vacuum, with dust brush, through the separation of flow guide slot, high-pressure eddy current is formed on the paper surface, which can remove the dust of printing material more effectively
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2.3 Infeed tension control system | l Infeed tension impression roller is servo motor control for high register accuracy l One set servo motor, l One set servo driver, l One high-precision planetary gearbox, l Use the double rubber roller to clutch and feed paper and to ensure the tension . |
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