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Robot system able to secure worker safety

A robot system and robot technology, applied in the field of robot systems, can solve problems such as cost increase, threat to operator safety, and robot system cost increase, and achieve the effect of ensuring safety

Inactive Publication Date: 2008-06-25
FANUC LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when the robot stop signal cannot be output due to a failure or the robot cannot be stopped according to the robot stop signal, the robot will enter the passage in a movable state, threatening the safety of the operator.
Therefore, the circuit that outputs the robot stop signal or the circuit that stops the operation of the robot needs to be highly reliable as the circuit that outputs the emergency stop signal, and it is necessary to use a safety PLC, High-priced equipment such as safety relays, which increases the cost of the robot system
In addition, in the event that the robot enters the passageway in an operable state, in addition to the emergency stop device for the robot itself (that is, the motor for operation), it is necessary to install an emergency stop device for the motor for moving the robot. resulting in further cost increases

Method used

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  • Robot system able to secure worker safety
  • Robot system able to secure worker safety
  • Robot system able to secure worker safety

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Embodiment Construction

[0024] Hereinafter, embodiments of the robot system of the present invention will be described with reference to the drawings.

[0025] In the robot system 10 of the present invention, a plurality of stations including a first station 12 and a second station 14 are provided. In addition, between the first station 12 and the second station 14, there is an operator channel 16 for the operator to pass through for the transportation of materials or the maintenance of the machine. The workstations 12, 14 are separated by an operator access 16. The stations 12 and 14 are, for example, areas where workpieces are machined by machine tools such as machining centers, and pallet arrangement areas where workpieces before or after machining are placed. In addition, above the workstations 12, 14, a crane frame 20 extending across a plurality of workstations is provided. A traveling path 22 such as a traveling rail extending in the horizontal direction is provided on the crane frame 20 alo...

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Abstract

A robot of a robot system performs a desired operation by an operation motor and moves along a route by a movement motor. The robot system includes a robot power cutoff device for cutting off the power supply to the operation motor when making the robot move from one station to another station across the worker passage, a cutoff state monitoring device for monitoring the cutoff state of the power supply to the operation motor, and an emergency stop device. The emergency stop device cuts off the power supply to the movement motor so as to make the robot stop on an emergency basis, when it is detected that the power supply to the operation motor has not been cut off and the robot enters the predetermined section above the worker passage.

Description

technical field [0001] The present invention relates to a robot system capable of ensuring the safety of an operator when a robot is moved between different workstations across an operator's aisle provided between the different workstations. Background technique [0002] In a production factory or the like, there are a plurality of stations such as a station provided with a machine tool such as a machining center for performing each processing step, and a pallet station for placing a workpiece before or after processing. In addition, generally, a robot for loading and unloading work such as loading and unloading of workpieces is installed at each station. In such a production system, a crane frame provided with a traveling rail is installed over a plurality of stations, and one robot is moved along the traveling rail, whereby one robot may be shared between a plurality of stations. In this way, if a robot is shared between multiple stations, the robot can work at other stat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25J5/02B25J19/06
CPCB25J9/1676F16P3/12B25J19/06
Inventor 桥本良树久保义幸
Owner FANUC LTD
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