Electrical control circuit for controlling the speed and positio

Details Electrical control circuit for controlling the speed and positio Electrical control circuit for controlling the speed and positio

1996-09-26

1997-12-16

Edwards, Laura

Coating apparatus

Control means responsive to a randomly occurring sensed...

Responsive to attribute, absence or presence of work

118674, 118712, 118203, 118213, 118244, 118261, 118406, 118 46, 156350, 156378, 156578, 101118, 101120, B05C 100

Patent

active

056980345

ABSTRACT:
A hot melt material coating system (10) is provided, comprising (i) a rotary coater (12) driven by a motor (604); (ii) a rotary coater position, speed and direction indicator (610) operatively connected to the rotary coater and providing a signal representing the position, speed and direction thereof; (iii) a web position, speed and direction indicator (612) operatively connected to the web and providing a signal representing the position, speed and direction thereof; and (iv) a control system (600). The control system (600) includes (a) a first control circuit (614) for receiving the rotary coater position, speed and direction indicator signal and the web position, speed and direction indicator signal, and for outputting a control signal to the motor in response to the indicator signals to maintain a predetermined relationship of the position, speed and direction of the rotary coater with respect to that of the web; (b) a web position indicator (618) positioned proximate to the web and providing a signal representing the position thereof with respect to the web; and (c) a second control circuit (616) for receiving the web position indicator signal and the web position, speed and direction indicator signal, and for outputting a web position correction signal to the first control circuit, the first control circuit varying the control signal in response to the web position correction signal.

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M-Track User Manuel, Rev. B., Fenner Industrial Controls, "Section 6, Theory of Operation", pp. 6-1 through 6-6, copyright 1990.
Nordson Hot Melt Rotary Screen Printer Specification sheet, Mar. 1992.

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