Rewinding Machine operating procedures - Start thread
1The main operator passes the inspection to confirm that the paper core and the size of the paper cut are correct.
The power-on signal informs the operator to prepare the paper. Open the paper feed roller, blower system, and paper positioning system before threading.
2. Start the rewinding machine and crawl the car at a speed of 15 meters.
3. The base paper is torn or folded into a triangle and sent to the platen roller to be delivered by the platen roller.
The paper is fed to the bottom knife roll and pressed against the horizontal roller.
4. The paper web is drawn flat and the paper trimming is aligned with the paper core and the port.
Introduce the paper edge fan to inform the main operation to stop. At this time, check the trimming situation and adjust it in time.
5. Use a piece of tape to match the paper web to the paper core, and then remove the letter immediately after sticking.
No. To inform the main operation, press the platen roller button to press the platen roller against the paper core, and start the roll paper.
Rewinder mechanical structure and control process ---
Second, the main structure of the winder
2.3 Rolling Department
Nowadays, with the increase of the speed of the winder, most of the winders are equipped with unloaders, which are used to push the rolled paper rolls from the support rolls and unload them on the ground. It has many forms, the most common ones are the unwinding station and the unwinding pendulum. Its control mainly depends on air pressure or hydraulic pressure. The thief of the unwinder can be selected according to the number of operators, the size and quality of the core. The advanced foreign rewinding machine can automatically control the positioning of the mandrel and mandrel and the cutting of the paper, which can save auxiliary operation time and improve production efficiency.
4, transmission mechanism
The speed of the paper-feeding machine of the winder is generally about 15 to 40 m/min. In the process of raising the speed of the paper from low, we require the speed of the vehicle to rise, so that the paper roll can be avoided due to the fluctuation of the tension. The tightness is inconsistent. Uniform acceleration is required for breakage or shutdown. During the acceleration process, the average acceleration is usually 0.23~0.37m/s, and the acceleration time is usually 50~60s. In the braking process, the deceleration is 0.42~0.75m/s and the braking time is 40s. In order to meet the shifting requirements of the winder, most of the rewinding opportunities are driven by DC motors. In the previous rewinding system, a DC motor generally controlled two supporting rollers, and in the current rewinding machine, Development and research have started with two separate motor control rolls, which can control the speed difference between the two rolls, which is beneficial for taking up the appropriate tightness of the paper roll.
Guolian High Speed ??Slitting Rewinder Technical Description ---
The specific technical structure is described as follows:
2. Paper cutting department:
It is mainly composed of independent frame, guiding paper-feeding roller, segmented and extended arc roller device, front and rear segment guide roller, bottom knife device, round knife device and paper suction fan.
The frame is welded by steel plates and is heavy and sturdy, completely independent of the take-up frame, avoiding the effects of possible vibration on the paper cut.
Guided paper roller, diameter Φ700mm, material Q235, directly driven by motor, chrome-plated surface, hydraulic disc brake and vertical adjustment device, can be adjusted along the scale with worm gear system to adjust the tension of the paper web, adjustment range It is ±25mm. The large diameter guide rollers also facilitate smooth and high speed operation of the equipment and paper web. The bottom knife device, the round knife device and the front and rear segment guide rollers form a paper cutting platform to ensure that the width direction of the paper cutting is even and even. There are 6 sets of cutters, top knife φ180mm, bottom knife φ200mm, each bottom knife is driven by a variable frequency motor, the cutter is automatically positioned, and the cutting servo width is automatically adjusted by the control servo system. The entire slitting system assembly (including tool holders, guide rails, etc.) is imported from abroad to ensure its stability and reliability. The segment guide roller before and after the cutter has a diameter of φ198mm and a roller material Q235, which is divided into 5 sections. Each side of the cutter is equipped with SKF bearings. The surface of the roller body is grooved and the surface is chrome-plated. The circular knife device is composed of a cylinder, a sliding seat and a round knife, and is fixed on the circular beam beam guide rail. The feeding knife and the knife are controlled by the cylinder. After the starting, the two sides of the knife start to cut the paper edge, and the other round knife is given by the operator. After the command is fed, when the paper breaks, the air source of the middle circular knife is automatically cut off by the main control command and automatically raised. There is a web stabilizer plate on each side of the knife to guide the paper edge.
Before the paper cutting table, a set of segmented stretching roller system is installed. The diameter of the stretching roller is φ198mm, the material of the roller body is Q235, and the surface is chrome-plated. The total length is 19 segments. The curvature of the multi-stage roller can be adjusted before and after the hand wheel to ensure the paper web. smooth.
The suction paper edge device on both sides of the longitudinal cutter uses a special fan to break the paper edge, which makes the suction effect better, and is also beneficial to the next processing of the waste paper edge. Fan motor power 37KW air volume 11000m3 / h.
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