Pallet Transport Control Using Automatic Work Completion Detection
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Solution Overview
Problem
In pallet transport systems, workers may forget to perform the work completion operation, leading to delayed machining and reduced productivity due to the lack of automatic detection of workpiece attachment completion.
Innovation Solution
A pallet transport system equipped with a control device that acquires indicators of work progress, such as images from cameras, open/closed states of doors, clamping strength, and light intensity, to determine the completion of workpiece attachment and initiate pallet transport accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If automatic detection of work completion is implemented using sensors and cameras, then productivity is improved by preventing delays, but device complexity increases due to additional detection components
Solution Approach 1:
The system enables self-service by having the workpiece or pallet itself provide detection signals. For example, the pallet includes sensors that automatically detect when work completion occurs, eliminating the need for external complex detection systems. The system serves itself by using the existing operational states to trigger transport without additional monitoring equipment.
Solution Approach 2:
The system implements feedback mechanisms where sensors detect work completion status and automatically feed this information back to the control system. The camera captures images of the workstation, and the control device analyzes these images to determine whether the door is closed and work is complete, creating a closed-loop feedback system that automatically triggers transport.
2Device complexity
If manual work completion operation is required, then device complexity is reduced, but loss of time occurs when workers forget to perform the operation
Solution Approach 1:
The system performs preliminary action by pre-configuring automatic detection mechanisms that are ready to detect work completion without requiring manual intervention. The sensors and cameras are positioned and configured in advance to monitor the workstation, and the control system is pre-programmed to automatically trigger transport when detection criteria are met, eliminating the need for workers to remember to perform completion operations.
Solution Approach 2:
The system replaces the manual mechanical operation of pressing a completion button with automated detection mechanisms. Sensors, cameras, and image processing algorithms substitute for the worker's manual action, automatically determining when work is complete and triggering transport without mechanical human intervention.
Data Source
AI summary
A technique for detecting the completion of work of attaching a workpiece to a pallet is provided. A pallet transport system includes: a transport device for transporting a pallet to which a workpiece can be attached; a pallet housing unit for housing the pallet, a workstation in which a worker is to conduct work of attaching the workpiece to the pallet transported from the pallet housing unit; a machine tool for machining the workpiece attached to the pallet in the workstation; and a control device for controlling the transport device. The control device acquires an indicator indicating progress of the attachment work in the workstation, determines whether or not the attachment work has been completed based on the indicator, and when it is determined that the attachment work has been completed, transports the pallet located in the workstation to the pallet housing unit or the machine tool.