Rewinding Machine operating procedures - Preparation for rewinding.
1. The crane operator and the rewinding personnel first check whether the information on the parent roll tracking slip on the base paper meets the requirements of the technical standards, specifications and specifications.
2. Check whether the labels of various paper diseases on both ends of the base paper roller are clear and consistent with the contents on the tracking sheet.
3. The crane operator should operate carefully according to the safe operation rules of the driving.
4. Place the base paper roll on the unloading frame smoothly, place the drum groove on the shaft head, place the track groove in the locked position, and connect it with the hydraulic coupling.
5. Jog the left and right shift buttons of the exit tray to bring the ends of the web to a position that can be trimmed (to be threaded).
6. The operator should make a detailed record of the paper (such as shift, shift, production date, roll time and paper roll code, etc.).
Rewinder mechanical structure and control process ---
Third, the rewinding machine control performance indicators
The rewinder is the last process in the papermaking process. The performance of the rewinder determines the quality of the finished paper roll. A complete rewinder must have the following properties:
3. Tension adjustment mechanism
It is generally believed that web tension control is one of the important factors affecting the tightness of the paper roll. The most important function of flattening the paper web during the rewinding process is the web tension, and the web tension must be kept stable before the paper can be avoided. The lateral movement of the web allows the rolled out finished paper roll to meet the requirements. However, the web tension is only affected when the finished paper roll is rolled up. Since we are using a double bottom roller lower paper rewinding machine, the paper web must pass through the back bottom roller to be wound on the paper roll. The roller will isolate most of the tension, and only a small amount of tension can be transferred to the finished paper roll, which means that if there is tension to control the hardness of the paper roll, if the hardness of the paper roll changes little, The tension will change a lot. The key factors affecting the hardness of the paper roll are the pressure of the platen roller and the torque difference between the front and rear bottom rollers. The effect of the web tension on the hardness of the paper roll is not great because it is not a critical factor. 4. Electric drive "flexible" start and proper speed program control The starting of the winder is of course smoother and better, so that the paper web can be prevented from being subjected to the impact of tension, and the breakage can be reduced and the paper roll can be improved. Rewind quality. In order to meet such requirements, we often add a given integrator to the speed and current of the speed regulation system. This is beneficial to the start of the winder. Through analysis, we can know that if the system is to start more smoothly, give The larger the time constant of the integrator, the better, so the integral time constant of a given integrator can be adjusted over a large range to suit the processing requirements.
From the above four points, we can see that the electronic control system must have adjustment skills to meet the rewinding process.
Guolian High Speed ??Slitting Rewinder Technical Description ---
The specific technical structure is described as follows:
Part 1: Mechanical parts
The mechanical part mainly consists of a paper exiting section, a paper cutting section, a double curved roller section, a paper winding section, and an automatic paper guiding section.
1. Ejection department:
The structure is all welded by steel plate, equipped with an empty paper roll temporary storage guide rail. The paper-removing roller is locked on the paper-removing frame by the hydraulic operating lever. After the paper is finished, the paper-returning core is pushed onto the guide rail to replace the paper. Roll and start-up operation saves time. A bumper is attached to the end of the exit frame rail to reduce vibration and noise caused by the roll change.
The coupling clutch is located between the paper roller and the brake motor, hydraulically operated, and is interlocked with the hook safety anti-lift device. The crane hook cannot lift the empty paper return shaft before the roll paper completes the clutch has been disengaged. Security performance.
With brake generator drive and hydraulic control, the paper return frame is horizontally adjusted by hydraulic motor and has a lateral swing function with a maximum swing of ±50mm. The emergency brake uses a brake generator and a hydraulic disc brake. The brake is imported from abroad, with small volume, large braking torque and good reliability.
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