A cascade control system for dancer-based web tension control is proposed, comprising a subordinate speed control for controlling a movement speed of an active dancer system, as well as a tension control superimposed on the subordinate speed control for controlling a web tension. A corresponding ...
Pepperl+Fuchs ultrasonic sensors enable web tension feedback in plastic thermoforming, metal stamping, and paper converting processes …
The EP Converter is included within the Isobox tension control box and can be configured to work with load cells, dancer or ultrasonic sensor. Maximum precision and accuracy Very compact dimensions: it can be easily placed near the brake it is connected to, in order to obtain the maximum per...
was repeated just by adding the dancer system.The resp onse of th e sy stem is shown in Fig.14.Fig.1 5 show s th e inp ut output curves of danc er at w ork during the web tension control exp eriment presented in F ig .1 4 . r — — ■■1 _ _ — 一——广——...
A web tension control apparatus and method utilizes a control for a drive motor (A) including an oscillating roll (B) for moving a cam (C) in relation to a proximity sensor (E) for controlling the tension in the moving web being transported for takeup. The power output of the proximity...
1 Document Number: 12225 Revision 10-Oct-2016 S M A R T S O L U T I O N S F O R D E M A N D I N G I N D U S T R I E S Chapter I - Problems Solved by Web Tension Measurement (2)Improved Product Quality (2)Faster Setup (2)Higher Productivity (2)Chapter II ...
, while more sensitive applications may require the tension loop to be closed by feedback from a load cell. some materials are better handled by running the drive in speed control with a dancer roll measuring the tension and modulating the winder speed. control techniques has solutions that ...
allows the controller to adjust the tension based on the changes in the roll radius as it unwinds. Using the MapleSim Web Handling Library tocreate an accurate model for the unwinding zone, the required brake torque is calculated by a controller based on the rotation angle of the dancer arm...
A web-tension control apparatus for maintaining tension in a web being unwound from a roll in an unwind stand. The stand has a brake for retarding rotation of the roll and a sensory means, such as a dancer roll, for sensing the tension of the web being unwound. The apparatus includes co...
900 where a pendulum or dancer roll 4 is utilized. In this device, change in tension in web 1 causes roll 4 to pivot, and thereby change the setting of potentiometer 15. The potentiometer controls the speed of drive motor 5 to vary the speed of the web and thereby control web tension....