Robot Hand Axis Protective Sheath with Rotatable Anti-Twist Fastening
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Solution Overview
Problem
Existing protective sheaths for robot hand axes in painting robots offer mechanical resistance and can detach or twist, leading to contamination and mechanical overload, especially in confined spaces.
Innovation Solution
A protective covering with a proximal protective sheath fastening that allows rotational movement and forms an axial stop, using a clamping ring and a rotatable sliding ring to prevent detachment and twisting, reducing mechanical resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If an elastic protective sheath is used to cover the robot hand axis, then the robot hand axis is protected from paint contamination, but the protective sheath offers mechanical resistance to robot hand axis movements
Solution Approach 1:
The patent introduces a rotatable sliding ring that can rotate relative to the clamping ring, allowing the protective sheath to dynamically adapt to the robot hand axis movements. This dynamic mechanism reduces mechanical resistance by enabling the sheath to follow the axis rotations without generating excessive friction or binding forces.
2Adaptability or versatility
If the protective sheath is made elastic to accommodate movements, then it can follow robot hand axis movements, but it can detach or twist during operation
Solution Approach 1:
The patent divides the fastening mechanism into two separate functional components: a clamping ring that provides fixed axial positioning and a rotatable sliding ring that handles rotational movements. This segmentation allows each component to specialize in one aspect of movement accommodation, maintaining reliable attachment while preventing twisting and detachment.
3Strength
If the protective sheath length is increased to counteract tensile load, then it can withstand paint material soiling, but it increases the volume of the protected area
Solution Approach 1:
The rotatable sliding ring mechanism allows the protective sheath to dynamically adjust its effective length during rotation. The sheath can be optimized for minimal length while the sliding ring provides the necessary mechanical advantage to withstand tensile loads, reducing the volume of the protected area while maintaining strength.
4Reliability
If the protective sheath is tightly attached to prevent detachment, then it remains secure during movements, but it increases mechanical resistance and can overload the robot drive
Solution Approach 1:
The patent segments the attachment function into axial confinement (clamping ring) and rotational accommodation (sliding ring). This allows the sheath to be securely attached in the axial direction to prevent detachment, while the sliding ring provides a low-friction interface for rotational movements, minimizing mechanical resistance and robot drive load.
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 solution ensures the protective sheath follows the robot's movements without detaching or twisting, preventing contamination and mechanical overload, while maintaining accurate positioning.
Implementation Method 1
The rotatable sliding ring (11) can be rotated relative to the clamping ring (16) in order to reduce friction
Data Source
AI summary
The disclosure relates to a protective covering for a robot hand axis of a robot, in particular in a painting robot. The protective covering according to the disclosure has a protective sheath for at least partially enclosing the robot hand axis. Furthermore, the protective covering according to the disclosure has a proximal protective sheath fastening for fastening the protective sheath to a fastening point on a proximal component of the robot hand axis or on the robot arm of the robot. Furthermore, the protective covering according to the disclosure has a distal protective sheath fastening for fastening the protective sheath to the tool. The disclosure provides that the proximal protective sheath fastening and preferably also the distal protective sheath fastening allows a rotational movement of the protective sheath relative to the fastening point on the proximal component of the robot hand axis or on the robot arm of the robot.