Tube Lifter Coupling for Safe Emergency Uncoupling
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Solution Overview
Problem
Existing automated controllers for tube lifters lack effective collaborative operation with humans, particularly in shared workspaces, and do not provide adequate safety features in case of power failures.
Innovation Solution
A handling system that includes a tube lifter with a vacuum-based lifting mechanism and a collaborative robot (cobot) manipulator, equipped with a coupling device and a valve control system. The coupling device allows for detachable coupling between the tube lifter and the manipulator, and the valve control system is actuated by the manipulator to control the length of the lifting tube. Additionally, the system includes a safety mechanism that automatically decouples the manipulator from the tube lifter in emergency situations, such as power failures, allowing the manipulator to move into a safe configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If automated control is implemented for tube lifter operation, then productivity is improved, but reliability deteriorates due to lack of safety features in emergency situations
Solution Approach 1:
The system automatically detects power failures and triggers uncoupling of the manipulator from the tube lifter without human intervention. The control device monitors system status and autonomously executes safety procedures, allowing the system to serve itself in emergency response.
Solution Approach 2:
The system prepares for potential failures by implementing a safety mechanism that proactively uncouples the manipulator when power failure is detected. This preliminary protective action prevents dangerous situations before they can develop, ensuring the manipulator can move freely in case of emergency.
2Reliability
If coupling device enables automatic uncoupling for safety, then reliability is improved, but device complexity increases
Solution Approach 1:
The coupling device integrates multiple functions into a single mechanism: mechanical coupling, electrical connection, and safety-based automatic uncoupling. By merging these functions, the system achieves comprehensive safety without proportionally increasing complexity.
Solution Approach 2:
The coupling device serves multiple purposes: normal operational coupling, electrical signal transmission, and emergency safety uncoupling. This multi-functionality allows a single component to address both operational needs and safety requirements.
3Reliability
If manipulator is decoupled in emergency situations, then reliability is improved, but loss of time occurs during recoupling operation
Solution Approach 1:
The system maintains readiness for recoupling by keeping the coupling device in a state that allows quick re-engagement. The control device is prepared to immediately initiate recoupling procedures once normal operation is restored, minimizing downtime.
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
The handling system enables efficient and collaborative automated operation of the tube lifter, ensuring safe operation even in emergency situations without the need for external safety measures. The system's design allows for precise control of the lifting force and movement, enhancing operational safety and efficiency in shared workspaces.
Implementation Method 1
The lifting tube can be shortened by applying a vacuum to the tube interior
Implementation Method 2
The valve device can be actuated, in particular controlled, by moving the first coupling portion along the control axis
Data Source
AI summary
The invention relates to a handling system comprising a tube lifter, having a lifting tube, an end effector and a valve device, a manipulator, and a coupling device for coupling the tube lifter to the manipulator, wherein the coupling device has a first coupling portion on the tube lifter side and a second coupling portion on the manipulator side, wherein the first coupling portion is mounted on the lifting tube so as to be axially displaceable along a control axis, wherein the first coupling portion interacts with the valve device in such a way that the valve device can be actuated by displacing the first coupling portion along the control axis.