Work Robot Multiplex Communication for End Effector Cable Reduction
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Solution Overview
Problem
The increasing number of communication cables between the fixing section and the movable section of work robots, due to additional sensors and devices on the end effector, compromises the design freedom and complexity of the device.
Innovation Solution
Implementing a multiplex communication system with a first multiplex communication unit in the fixing section and a second multiplex communication unit in the movable section, connected via a multiplex communication line, to reduce the number of communication cables needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the number of devices (sensors, cameras, electromagnetic motors) mounted on the end effector is increased, then the functionality and versatility of the work robot is improved, but the number of communication cables required between the fixing section and movable section increases
Solution Approach 1:
The patent combines multiple communication cables into a single bundled cable structure. The fixing section includes a bundle of communication cables, each connecting different devices on the end effector to the controller. This merging approach reduces the number of separate cable routes needed while maintaining all necessary communication connections, thereby resolving the contradiction between enhanced functionality and reduced structural complexity.
2Adaptability or versatility
If different types of end effectors are configured to handle various workpieces, then the adaptability of the work robot is improved, but the cable routing design becomes more complex and less flexible
Solution Approach 1:
The patent creates a universal cable routing structure where the bundle of communication cables is designed to accommodate multiple end effector configurations. The fixing section's cable bundle can serve different device combinations (sensors, cameras, motors) without requiring redesign, enabling the work robot to handle various workpieces with different end effectors while maintaining consistent cable routing design flexibility.
3Reliability
If communication cables are routed individually for each device, then the reliability of individual connections is maintained, but the overall system complexity and wiring space requirements increase
Solution Approach 1:
The patent merges multiple individual communication cable routes into a unified bundle structure while maintaining individual cable integrity within the bundle. Each communication cable remains distinct and connected to its specific device, preserving connection reliability, while the bundled organization reduces overall wiring complexity and optimizes space utilization in the fixing section and along the arm section.
Data Source
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AI summary
A work robot capable of reducing the number of communication cables between an operating portion and a controller is provided. A workpiece transferring device 11 includes a base section 31, an arm section 33 movably connected to the base section 31, and an end effector 39 provided at the distal end of the arm section 33. The end effector 39 of the workpiece transferring device 11 arranges workpieces on a pallet at predetermined intervals. A first multiplex communication unit 111 provided in the base section 31 is connected to a second multiplex communication unit 113 provided in the arm section 33 via an optical fiber cable. The system controller receives various signals from the end effector 39 by multiplex communication via the first multiplex communication unit 111 and the second multiplex communication unit 113, and controls the end effector 39 based on the received signals.