Non-Contact Power Shutoff for Board Line Maintenance Isolation
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Solution Overview
Problem
In non-contact power feeding devices, there is a risk of continuous power supply to electric power supply circuits even after the drive power for board work machines is shut off, which is undesirable during maintenance or other operations.
Innovation Solution
A power supply shutoff device and method that includes a movable section, driving section, power supply device, power distribution section, and a supply control section to stop power supply to the electric power supply circuit when the drive power is shut off in board work machines, using non-contact power feeding and a supply control mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the drive electric power for board work machines is shut off to perform maintenance work, then worker safety and maintenance accessibility are improved, but the electric power supply circuit may continue to receive power through the power distribution section creating a safety hazard
Solution Approach 1:
The power supply system is segmented into multiple independent power supply circuits, each associated with a specific board work machine. When a machine is shut off for maintenance, only its corresponding power supply circuit is disconnected, while other circuits remain operational. This segmentation isolates the maintenance zone from power hazards without affecting the entire system.
Solution Approach 2:
The control device detects the shutdown state of board work machines before maintenance begins and proactively shuts off the corresponding power supply circuits in advance. This preliminary action ensures that no power is supplied to the electric power supply circuit when workers are performing maintenance, eliminating the safety hazard before it can occur.
2Device complexity
If a single power supply device serves all board work machines through a common power distribution section, then device complexity is reduced, but the ability to independently control power supply to individual machines during maintenance is lost
Solution Approach 1:
The power supply system is divided into multiple independent power supply circuits, each dedicated to a specific board work machine. The control device can independently control each circuit based on the operational state of its associated machine, enabling selective power shutdown for maintenance while keeping other circuits operational.
Solution Approach 2:
The control device performs multiple functions: it monitors the operational state of all board work machines, determines which machines are shut down, and controls the corresponding power supply circuits. This multi-functionality allows a single control device to manage the entire power distribution system without requiring separate control mechanisms for each machine.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Effectively stops the power supply to the electric power supply circuit when the drive power is shut off, ensuring safe and controlled operations during maintenance or other situations.
Implementation Method 1
a power feeding coil and a power receiving coil. When the power feeding coil of one board production machine is enabled to feed power to the power receiving coil, the power feeding from the power feeding coil to the power receiving coil is started
Data Source
AI summary
A power supply shutoff device includes a movable section, a driving section, a power supply device, a power distribution section, an electric power supply circuit, and a supply control section. The movable section is configured to travel on a traveling path provided along a board production line in which multiple board work machines, which perform a predetermined board work on a board, are installed side by side. The driving section is provided in the movable section and configured to cause the movable section to travel by using supply electric power supplied from the board work machine with non-contact power feeding. The supply control section is configured to stop a supply of the electric power to the electric power supply circuit when drive electric power for driving the board work machine is shut off in at least one board work machine among the multiple board work machines.