Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – Automatic and/or material-triggered control
Patent
1976-11-08
1978-07-11
Wityshyn, Michael G.
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
Automatic and/or material-triggered control
156361, 156495, 156504, 156505, 242 583, 242 584, B65H 1914, B65H 2500
Patent
active
041000129
ABSTRACT:
Web splicing apparatus employs a pair of driven nip rolls which controllably feed web from a running roll into a festoon as web is drawn out of the festoon at a constant rate by a downstream web consuming machine. The nip rolls are driven by a DC motor connected in a closed loop servo system which compares the speed of the web entering the festoon with the web line speed to develop a command signal for the motor. During normal operation, the command signal includes a web velocity trim signal developed by monitoring the position of the festoon dancer relative to a selected reference position so as to minimize tension upsets and to maintain the dancer within its control range. During a splice sequence, the command signal comprises a deceleration ramp having a selected slope to provide controlled deceleration of the web to minimize tension upsets and to permit actuation of the splicing nips prior to actual web stop. After the splice is made, the command signal comprises an acceleration ramp whose slope is automatically adjusted to apply the least necessary tension to the ready web for new roll acceleration consistent with a given splicing speed. Further with this arrangement, the gain of the system is independent of the changing size of the expiring roll.
REFERENCES:
patent: 2963234 (1960-12-01), Chase et al.
patent: 3713600 (1973-01-01), Murray et al.
patent: 3785902 (1974-01-01), Preston et al.
patent: 3939032 (1976-02-01), Taitel et al.
patent: 3971524 (1976-07-01), Nudinger et al.
patent: 3989576 (1976-11-01), Collin
Clifford John W.
Corcoran George F.
Meihofer Edward F.
Butler Automatic Inc.
Wityshyn Michael G.
LandOfFree
Driven nip roll splicer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Driven nip roll splicer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Driven nip roll splicer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-260399