Tension Controller Controls Two Magnetic Powder Clutches Simultaneously

In the production process, some small processing manufacturers use a tension controller at the same time to control two magnetic powder clutches at the same time, and no problem deviation will be found in a short time. However, the small series summarizes the feedback information proposed by the tension controller agent, reminding everyone that theoretically, the tension control is feasible as long as it does not exceed the output rated current of the controller. There are few actual operating cases, which may lead to instability of control accuracy. Therefore, the tension controller is still most suitable for one-to-one control.

Tension controller associated with magnetic powder clutch

The magnetic powder clutch is a combination of a transmission unit (input shaft) and a driven unit (output shaft). The space between the two sets of cells is filled with granular magnetic powder (about 40 microns of rest). When the magnetic coil is not conducting, the torque will not be transmitted from the transmission shaft to the driven shaft. However, if the coil is electromagnetically energized, the magnetic powder will attract hardening due to the action of the magnetic force, and the torque will be transmitted between successive slidings. . The principle of the magnetic powder brake is similar to that of the magnetic powder clutch, except that the transmission unit is turned into a fixed unit.

The tension controller is divided into: manual tension controller, semi-automatic tension controller and automatic tension controller. Its function features large LED liquid crystal display, Chinese and English display selection, and friendly operation interface. Fully digital design, no adjustable potentiometer, simple tension calibration process, accurate, stable and reliable tension measurement. It can receive single/dual sensor input signals and adapt to various tension sensors as input signals: optional micro-displacement special tension sensor (input signal range is 200mV, power supply 5V)

The web tension control system is composed of magnetic powder brake, proportional amplification, power amplification, tension detection and the like. The system can manually select the pre-tension according to different paper tension requirements, set the "automatic" position during normal operation, adjust the tension to the pre-tension by "given", and the tension adjustment roller is in equilibrium. If the tension changes due to some interference, The tension adjusting roller is displaced, and the tension detector outputs a corresponding change signal. After the circuit is amplified, the braking torque of the magnetic powder brake is controlled to change accordingly, the tension changes accordingly, and the tension adjusting roller returns to the equilibrium state, thereby maintaining the tension stable. Taper tension control is achieved by measuring the coil diameter with a proximity switch.