What are the performance and characteristics of high-speed slitting machine, let's take a look:
        After printing and coating, the aluminum foil needs to be post-printed and slitted on the slitting machine to cut the large roll of semi-finished products into the required size. Running the semi-finished products on the slitting machine is a process of unwinding and rewinding. This process includes two parts: machine speed control and tension control. The so-called tension is to pull the aluminum foil and roll it onto the core according to the standard. A certain stretching and tensioning force must be applied to the aluminum foil. The control force for tensioning the aluminum foil is the tension. Tension control refers to the ability to permanently control the tension of aluminum foil when it is conveyed on the equipment. This control must be effective for any running speed of the machine, including the acceleration, deceleration and uniform speed of the machine. Even in an emergency stop situation, it has the ability to ensure that the aluminum foil is not damaged at all.
        The tension control of slitting machine is basically manual tension control and automatic tension control. Manual tension control means that during the winding or unwinding process, when the roll diameter changes to a certain stage, the operator adjusts the manual power supply device to achieve the purpose of controlling the tension. Full-automatic tension control is to measure the actual tension value of the material belt directly by the tension sensor, and then convert the tension data into a tension signal and feed it back to the tension controller. Through this signal and the preset tension value of the controller, the control signal is calculated. Automatically control the execution unit to make the actual tension value equal to the preset tension value to achieve the purpose of stabilizing tension.
        The size of the equipment winding and unwinding tension setting directly affects the yield of the product. The tension is too large and the winding is too tight. The aluminum foil is prone to wrinkle I. The tension is insufficient. The aluminum foil is prone to slippage on the roll. Unloading and causing the unwinding shaft to swing greatly during slitting, which affects the slitting quality, so the slitter must have a good tension detection system.
        1. Unwinding tension detection system of slitter: Tension sensor detection is a direct detection of tension, which is closely combined with the machine and has a detection method of moving parts. Usually two sensors are used in pairs, and they are installed on the end shafts on both sides of the detection guide roller. By detecting the applied load on both sides of the guide roller, the material belt causes displacement or deformation of the tension sensor sensitive element, thereby detecting the actual tension value, and converting this tension data into a tension signal and feeding it back to the tension controller.
        2. The attenuation and tension compensation of the tension of the slitter winding and unwinding: It is generally believed that maintaining the aluminum foil tension constant during the winding and unwinding of the aluminum foil is beneficial to the performance of the finished aluminum foil, but it is not. The best way is to increase the tension of the aluminum foil according to a certain rule as the diameter or weight of the roll increases, and the smaller the diameter and weight, the smaller the tension value. Because there are automatic tension control and manual tension control in the slitting operation. Manual tension control requires the operator to continuously adjust according to the diameter and weight of the masterbatch. The automatic tension control system pre-sets the tension attenuation value, and the equipment is attenuated according to the change of the material roll during the operation. When setting the automatic tension operation, you should set the initial tension first, and then set the tension attenuation value. Taking the attenuation value of the slit aluminum foil unwinding as an example, the setting principle is: the aluminum foil tension attenuation value (%) is equal to the tension at the end of the winding of the aluminum foil minus the initial tension and then divided by the initial tension, and the quotient is multiplied by 100%. When setting the automatic tension value, it should not be too large, otherwise the surface hardness of the aluminum foil winding is large, and the edge curling phenomenon is easy to occur, but the tension should not be too small, too small, it is easy to cause the rewinder to be too loose, and the winding is not neat. Therefore, the quality of the rewinding and unwinding during the aluminum foil slitting operation is mainly affected by the change of the aluminum foil tension. It can be seen that the mastery of the rewinding and unwinding control system is the key to affecting the quality.

        To sum up, when slitting medicinal aluminum foil, we must first select the advanced model, and pay attention to understand the characteristics of the winding and unwinding tension detection control system used in the equipment during operation, and formulate reasonable for the aluminum foil material used The tension and the tension attenuation and compensation during the unwinding and unwinding process are used to realize the soft start and soft stop of the equipment tension to prevent quality problems. During the slitting operation, attention should always be paid to the change in the tension of the aluminum foil rewinding and unwinding, because it is affected by the changes in material quality, weight, thickness uniformity, and slitting speed. adapt. In order to ensure the accuracy of the tension of the unwinding and unwinding, when the tension detection roller of the unwinding and unwinding mechanism should be higher than the maximum speed, dynamic balancing treatment should be carried out, and the surface should have enough wrap angles during use to provide accurate running tension. Ensure the stability of product quality.