Whether it is a gravure printing machine or other types of printing presses, the control of the tension zone is inseparable during use, and this is a point that many small partners are not very easy to control, so how should the gravure printing machine tension zone be? Take control of it? What is the principle of its control?
The tension control of the unwinding tension zone of the gravure printing press is mainly performed by the uncoiler. Tension control is a main function of the uncoiler, so the control principle of the tension zone is consistent with the working principle of the uncoiler. The clutch, tension roller and tension controller form a closed-loop control system.
The printing tension zone is an important part of the gravure press tension control system and is the key to ensuring the accuracy of printing registration. The tension control of the tension zone adopts the differential principle, and the system adjusts the tension of the paper by controlling the running speed of the paper feed roller and the paper output roller. At present, the paper feed roller of most gravure printing presses is synchronized with the printing machine running speed, and the paper force roller shaft end is connected with the stepping motor to realize differential control.
It is also important to control the tension of the slitting tension zone of the gravure printing machine. If the cutting precision is not achieved due to the unstable tension, the waste will be discharged. For this reason, the tension zone generally adopts the same control method as the printing tension zone. The basic speed is the running speed of the printing group and the paper force roller, and the shaft end of the paper roll of the slitting group is connected with the stepping motor to realize the differential control.
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