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US 12,578,697 B2Granted
Conveyor system
AssigneeItoh Denki Co., Ltd.
InventorsKazuo Itoh, Tetsuya Itoh, Tomoya Matoba
Life of this patent
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Abstract
Conveyor system may comprise conveyor mechanism(s) provided with transport path(s) along which conveyed object(s) are conveyed to transport destination(s); electric current detector(s) and/or abnormality detector(s) that detect triggering event(s) which may be event(s) occurring at conveyor mechanism(s) due to conveyed object(s) during transport of conveyed object(s); and removal processor(s) that, when triggering event(s) detected by electric current detector(s) and/or abnormality detector(s) satisfy triggering condition(s), cause conveyed object(s) to be transported by conveyor mechanism(s) to removal area(s) which are not transport destination(s).
Claims18
A conveyor system comprising:
- a conveyor mechanism provided with a transport path along which a first conveyed object is conveyed to a prescribed transport destination;
- an event detector that detects a preestablished triggering event which is an event occurring at the conveyor mechanism due to the first conveyed object during transport of the first conveyed object, the detected event occurring at the conveyor mechanism being an erroneous event or an abnormal event exhibited by the conveyor mechanism;
- and
- a removal processor that, when the triggering event detected by the event detector satisfies a preestablished triggering condition, causes the first conveyed object, which is conveyed to a prescribed transport destination and causes the triggering event to be exhibited by the conveyor mechanism, and as a result to be transported by the conveyor mechanism to a removal area which is not the transport destination,
- wherein:
- the conveyor mechanism is divided into a plurality of zones along a transport direction of the transport path;
- each of the respective zones is provided with a motor outputting a drive force for conveying the first conveyed object;
- and the event detector includes an electric current detector that detects, as the triggering event, motor current flowing through the motor at each of the respective zones while the first conveyed object is being conveyed therethrough,
- wherein the triggering condition includes a second triggering condition that is satisfied when, for a zone of interest which is any one of the plurality of zones, a motor current of interest which is the motor current in the zone of interest exceeds a preestablished first electric current value, and
- wherein the second triggering condition is that the motor current of interest exceeds the first electric current value and the motor current of interest does not exceed a sum of a reference motor current, which is based on a motor current at a zone upstream from the zone of interest and a preestablished first electric current value width.
7 more elements
A conveyor system comprising:
- a conveyor mechanism provided with a transport path along which a first conveyed object is conveyed to a prescribed transport destination;
- an event detector that detects a preestablished triggering event which is an event occurring at the conveyor mechanism due to the first conveyed object during transport of the first conveyed object, the detected event occurring at the conveyor mechanism being an erroneous event or an abnormal event exhibited by the conveyor mechanism;
- and
- a removal processor that, when the triggering event detected by the event detector satisfies a preestablished triggering condition, causes the first conveyed object, which is conveyed to a prescribed transport destination and causes the triggering event to be exhibited by the conveyor mechanism, and as a result to be transported by the conveyor mechanism to a removal area which is not the transport destination,
- wherein:
- the conveyor mechanism is divided into a plurality of zones along a transport direction of the transport path;
- each of the respective zones is provided with a motor outputting a drive force for conveying the first conveyed object;
- and the event detector includes an electric current detector that detects, as the triggering event, motor current flowing through the motor at each of the respective zones while the first conveyed object is being conveyed therethrough,
- wherein the triggering condition includes a second triggering condition that is satisfied when, for a zone of interest which is any one of the plurality of zones, a motor current of interest which is the motor current in the zone of interest exceeds a preestablished first electric current value,
- wherein the triggering condition includes a third triggering condition that is satisfied when the motor current of interest is less than a second electric current value which is less than the first electric current value, and
- wherein the third triggering condition is that the motor current of interest is less than the second electric current value and the motor current of interest is not less than a value which is a reference motor current, which is based on a motor current at a zone upstream from the zone of interest, minus a preestablished second electric current value width.
8 more elements
Dependencies are inferred from the claim text.