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What is the function of the packaging steel belt anti-crease device?
by：Hongmei
2021-03-15
What is the function of the packaging steel belt anti-crease device?
During finishing, the galvanized sheet passes through two work rolls under high pressure. Therefore, the galvanized sheet is required to be stretched tightly under large tension, so that the galvanized sheet passes through the work rolls evenly and stretches evenly. However, due to production line speed fluctuations and plate shape, the galvanized sheet often shakes, wrinkles, and even the entrance tension disappears instantaneously. In this case, the deformation of the galvanized sheet during smoothing is not very uniform, resulting in local yielding. The surface of the galvanized sheet after smoothing will appear metal slip lines. In severe cases, the galvanized sheet will enter the work in a folded state. The roller is broken under high pressure and broken under high tension, causing a broken belt accident.
In order to overcome these phenomena, the entrance and exit of the smoothing machine are equipped with anti-wrinkle devices. The main purpose is to use the lifting roller to tighten the galvanized sheet at the entrance and exit of the smoothing machine through the action of a hydraulic cylinder. When shaking, wrinkling or loss of tension occurs, the hydraulic cylinder drives the lifting roller to rise, and the galvanized sheet is restored to the taut state; on the contrary, if the instantaneous tension increases, the large tension will lower the lifting roller, reduce the tension, and prevent breakage. band.
The anti-crease device consists of a fixed guide roller and a lifting roller. The fixed guide roller is located above the galvanized sheet, and the lifting roller is located below the galvanized sheet. The bottom surface of the fixed roll is lower than the bottom surface of the upper work roll, that is to say, if the lift roll is in the descending state, the upper work roll is in contact with the galvanized sheet, the finishing machine does not work, only the fixed roll is in contact with the galvanized sheet, and it is passive run.
If the finishing machine is to be put into operation, the lifting roller will rise so that the galvanized sheet will be lifted up to contact the work roller. After the lower work roll rises to contact the galvanized sheet under the action of the upper cylinder, the rolling force can be applied to the galvanized sheet.
During finishing, the galvanized sheet passes through two work rolls under high pressure. Therefore, the galvanized sheet is required to be stretched tightly under large tension, so that the galvanized sheet passes through the work rolls evenly and stretches evenly. However, due to production line speed fluctuations and plate shape, the galvanized sheet often shakes, wrinkles, and even the entrance tension disappears instantaneously. In this case, the deformation of the galvanized sheet during smoothing is not very uniform, resulting in local yielding. The surface of the galvanized sheet after smoothing will appear metal slip lines. In severe cases, the galvanized sheet will enter the work in a folded state. The roller is broken under high pressure and broken under high tension, causing a broken belt accident.
In order to overcome these phenomena, the entrance and exit of the smoothing machine are equipped with anti-wrinkle devices. The main purpose is to use the lifting roller to tighten the galvanized sheet at the entrance and exit of the smoothing machine through the action of a hydraulic cylinder. When shaking, wrinkling or loss of tension occurs, the hydraulic cylinder drives the lifting roller to rise, and the galvanized sheet is restored to the taut state; on the contrary, if the instantaneous tension increases, the large tension will lower the lifting roller, reduce the tension, and prevent breakage. band.
The anti-crease device consists of a fixed guide roller and a lifting roller. The fixed guide roller is located above the galvanized sheet, and the lifting roller is located below the galvanized sheet. The bottom surface of the fixed roll is lower than the bottom surface of the upper work roll, that is to say, if the lift roll is in the descending state, the upper work roll is in contact with the galvanized sheet, the finishing machine does not work, only the fixed roll is in contact with the galvanized sheet, and it is passive run.
If the finishing machine is to be put into operation, the lifting roller will rise so that the galvanized sheet will be lifted up to contact the work roller. After the lower work roll rises to contact the galvanized sheet under the action of the upper cylinder, the rolling force can be applied to the galvanized sheet.
