Method and device for controlling the traction of corrugated board in the double facer of a production line
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United States of America Patent
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Aug 23, 2022
Grant Date -
Nov 12, 2020
app pub date -
Apr 24, 2020
filing date -
May 6, 2019
priority date (Note) -
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Abstract
The method includes the step of pulling the corrugated board along hot plates by means of an upper flexible member and a lower flexible member driven by two electric motors. By at least one electric parameter of the drive motor of the lower flexible member, the correct operation of the traction device and in particular the correct ratio of the linear feeding speeds of the two flexible members is checked. The method provides an iterative check of the controlled electric parameter and a possible correction of the speed of the flexible members to maintain the desired speed ratio.
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