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US 4,689,857 AGranted
WEB weight control system
AssigneeJohn D. Hollingsworth on Wheels, Inc.
InventorAkiva Pinto
Life of this patent
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AssigneeJohn D. Hollingsworth on Wheels, Inc.
InventorAkiva Pinto
Estimating the term…
A web weight control system and method are disclosed wherein the actual weight of fibers supplied to a carding machine (36) are measured in a static condition in a weight pan (20). The supply roll (14) is controlled by computer (A) to supply a preset weight of fibers to weight pan (20). The weighed fibers are supplied to an apron feed (22) and to a pneumatic delivery system (28). Apron feeder (22) may be adjusted by adjusting the speed of an apron feed roll (50a). To maintain the fiber in a storage chute feed (32). Pressure sensed by a pressure gauge (52) is used to indicate quantity of fiber in chute feed (32) and pressure signal (53) is fed to computer (A) for control of delivery roll (50a). Card feed roll 62 which feeds fibers in the form of a batt (35) from chute feed (32) to the carding machine is controlled by computer (A) in synchronization with the speed of the carding machine as sensed by doffer roll (68). A preset web weight signal (48) is compared to an actual weight signal (46) representing the actual weight of fibers supplied by weigh pan (20). Any difference between the preset web weight and actual fiber weight is compensated for by adjustment of the operation of card feed roll (62). At the same time, adjustment of fiber supply roll (14) is made to adjust the weight of fibers supplied to pan (20) and maintain the feed of a preset weight of fibers.
A method for controlling the weight of a web produced on a carding machine of the type wherein fiber is fed from a fiber supply means to a fiber weighing means which supplies a weighed amount of fiber into a fiber delivery means which delivers fiber to a fiber storage means, said fiber storage means feeding fiber in the form of a fiber batt to a card feed roll which feeds the fiber batt to the carding machine, said method comprising:
A method of producing a web on a carding machine in which the weight of the web is accurately controlled comprising the steps of:
Apparatus for controlling the weight of a web produced by a carding machine of the type having a fiber feeding system which includes a fiber supply means for feeding fibers to a fiber weighing means which weighs the fibers, and fiber delivery means for delivering said weighed fibers to a fiber storage means which stores said fibers and forms said fibers into a fiber batt for feeding to a card feed roll for of the carding machine, said apparatus comprising:
Dependencies are inferred from the claim text.