Electricity: motive power systems – With particular motor-driven load device – Tension-maintaining type of motor-control system
Patent
1989-09-08
1990-09-18
Ro, Bentsu
Electricity: motive power systems
With particular motor-driven load device
Tension-maintaining type of motor-control system
318 7, 226 24, 242 7551, B65H 5938
Patent
active
049581112
ABSTRACT:
A system including a self-contained electromechanical control mechanism and method of operation is provided for controlling the tension and lateral position of a web or tape as it is motor driven to pass over a series of rollers. This device comprises mechanical means in which two pairs of rollers are mounted in upper and lower positions on a metal frame, the upper rollers being disposed on a pivotted plate having cantilever projections to which piezoelectric load cells are attached. Changes in the tension of the web or tape is sensed by the load cells connected in a bridge circuit, which sends a signal to a microprocessor, the output of which controls the driving motor or a clutch to compensate for the change in tension. Simultaneously, the position of the tape is controlled by another device, whereby the edge of the tape or a line on the tape passes through additional sensing means. This sends another signal to the microprocessor which energizes a linear actuator to correct the misalignment of the tape.
REFERENCES:
patent: 3568904 (1971-03-01), Kurz
patent: 4126817 (1978-11-01), Luzio
patent: 4206009 (1980-06-01), Kazares
patent: 4291825 (1981-09-01), Glanz
patent: 4341335 (1982-07-01), Schmid
patent: 4593236 (1986-06-01), Oesterle et al.
patent: 4844312 (1989-07-01), Gomi et al.
Harry E. Lockery; "Low Profile Weighing Transducers" Weighing & Measurement; Jan./Feb. 1984.
LandOfFree
Tension and web guiding system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Tension and web guiding system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tension and web guiding system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1574038