The cling film perforation rewinding machine produced by our company is often equipped with a guide system in order to ensure the stability of the lateral position of the film-bearing
material during operation. The guidance system can detect the lateral position deviation of the film-bearing material and make appropriate correction adjustments. The guide system
used to ensure the accurate position of the plastic wrap on the film-bearing material and the registration of the plastic wrap film is often installed in the unwinding part; the guide system
used to ensure the neat rewinding of the cling film machine rewinder is installed in the In the rewinding part. The control of the lateral position of the running belt includes single-side
edge positioning, center positioning and baseline positioning. The error measurement methods used in each type are different.
The working principle of the servo guidance system of the cling film rewinding machine is a guidance system that can control the position of the edge of one side of the film-bearing
material to remain constant. In the servo guidance system of the cling film rewinding machine, a pneumatic sensor is used to detect changes in the side position of the film-bearing
material; the hydraulic mechanism performs correction and adjustment. The pneumatic sensor uses airflow as the detection medium. The upper part of the sensor is the emitting nozzle,
and the lower part is the receiving nozzle. The edge of the film-bearing material runs between the upper and lower nozzles. When the edge position changes, the blocking condition of
the air flow changes. By receiving changes in the output air pressure signal of the nozzle, the lateral position deviation of the film-bearing material can be detected. The advantages of
pneumatic sensors are small size, low cost, and durability. Its disadvantages are slow response speed and high requirements for air source purification. If the air source contains impurities,
it can easily cause nozzle clogging and control loop contamination.