Spring-Loaded Robot Tool Changer for Quiet Rapid Coupling
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Solution Overview
Problem
Existing tool changers for robots are bulky, costly, and generate noise due to their reliance on pneumatic systems, which hinders rapid and efficient tool exchange.
Innovation Solution
A compact tool changer system featuring a gripper connected to a main body via a hinge shaft and a spring, with a lever and link mechanism that allows for rapid coupling and decoupling of tools using a hook and locking recess, and an optional fastening mechanism for secure tool attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pneumatic system is used for tool changing, then the tool changer can achieve reliable tool coupling and decoupling, but the device size increases, manufacturing cost increases, and noise is generated
Solution Approach 1:
The patent extracts and removes the pneumatic system from the tool changer, replacing it with a purely mechanical spring-based coupling mechanism. This eliminates the complex pneumatic components (cylinders, valves, hoses) while maintaining reliable tool attachment through the spring-loaded hook and locking recess system
Solution Approach 2:
The patent replaces the pneumatic system with a mechanical spring system. The spring provides the necessary force for tool coupling and decoupling through mechanical action on the lever and hook mechanism, eliminating the need for compressed air or hydraulic pressure while achieving the same functional result
2Reliability
If a pneumatic system is used for tool changing, then the tool changer can achieve reliable tool coupling and decoupling, but the manufacturing cost increases
Solution Approach 1:
The patent extracts and removes the pneumatic system from the tool changer, replacing it with a purely mechanical spring-based coupling mechanism. This eliminates the complex pneumatic components (cylinders, valves, hoses) while maintaining reliable tool attachment through the spring-loaded hook and locking recess system
Solution Approach 2:
The patent employs simple, inexpensive mechanical components such as springs, hooks, and levers that can be manufactured at low cost. These basic mechanical parts replace expensive pneumatic components, making the tool changer more economically viable while maintaining functional reliability
3Reliability
If a pneumatic system is used for tool changing, then the tool changer can achieve reliable tool coupling and decoupling, but noise is generated
Solution Approach 1:
The patent replaces the pneumatic system with a mechanical spring system. The spring provides the necessary force for tool coupling and decoupling through mechanical action on the lever and hook mechanism, eliminating the need for compressed air or hydraulic pressure while achieving the same functional result
Solution Approach 2:
The patent extracts and removes the pneumatic system from the tool changer, replacing it with a purely mechanical spring-based coupling mechanism. This eliminates the complex pneumatic components (cylinders, valves, hoses) while maintaining reliable tool attachment through the spring-loaded hook and locking recess system
4Device complexity
If a compact tool changer is designed, then the device size is reduced, but the coupling force may be insufficient
Solution Approach 1:
The patent employs a dynamic spring-based mechanism that automatically adjusts the coupling force based on the tool's weight and geometry. The spring compresses and expands to provide consistent holding force, allowing the compact device to maintain adequate coupling strength without requiring oversized components
Solution Approach 2:
The patent divides the coupling function into multiple mechanical elements (spring, lever, hook, locking recess) that work together in sequence. This segmentation allows each component to be small and simple while collectively providing sufficient coupling force through their coordinated mechanical action
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
Enables rapid, noise-free, and cost-effective tool exchange with enhanced coupling force, ensuring reliable tool operation and reduced manufacturing costs.
Implementation Method 1
a spring connected to the lever and configured to store elastic energy
Implementation Method 2
a lower spring disposed on a bottom surface of the main body and compressed between the main body and the tool
Data Source
AI summary
A tool change system includes: a seating portion configured to have a tool seated thereon; a tool changer disposed on a manipulator to separate the tool from the seating portion; and a pressing portion disposed on an upper side of the seating portion to release the tool from the tool changer. The tool changer includes: a main body disposed on the manipulator; and a gripper connected to the main body and including a hook to be locked into a locking recess formed on the tool and a lever pressed by the pressing portion.