Numerically controlled tape takeup system having device for auto

Details Numerically controlled tape takeup system having device for auto Numerically controlled tape takeup system having device for auto

1993-01-22

1994-01-11

Stodola, Daniel P.

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

242 7551, 318 7, B65H 7700, G11B 1543

Patent

active

052773787

ABSTRACT:
A tape takeup system includes a tensiometer which outputs a numerical value which changes in proportion to the tension applied to the tape. The numerical value is converted into a value of tension according to a predetermined formula. The rotational torque of the takeup reel is controlled so that the tension applied to the tape converges on a target tension on the basis of comparison of the value of tension represented by the numerical value output from the tensiometer and the target tension. When a known tension is applied to the tape, the value of the known tension and the numerical value which is output from the tensiometer upon application of the known tension are stored in a memory, and the predetermined formula is changed on the basis of the value of the known tension and the numerical value corresponding to the known tension stored in the memory. When a first switch is depressed, the torque control is interrupted, and a second switch is depressed, the change of the formula is permitted. When a third switch is depressed, the control of the rotational torque is resumed.

REFERENCES:
patent: 4015799 (1977-04-01), Koski et al.
patent: 4398227 (1983-08-01), Anderson
patent: 4786992 (1988-11-01), Tajima et al.
patent: 4977466 (1990-12-01), Nakata
patent: 5216556 (1993-06-01), Steinberg et al.
patent: 5222684 (1993-06-01), Yoneda et al.

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