Robot Hand-Axis Protective Covering With Rotatable Fastening
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Solution Overview
Problem
Existing protective sheaths for robot hand axes in painting robots offer mechanical resistance and risk detachment or twisting, 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 axial fixation, using a clamping ring and 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 freely on the clamping ring, allowing the protective sheath to dynamically adapt to the robot hand axis movements. This dynamic mechanism reduces mechanical resistance by enabling rotational movement rather than rigid constraint, resolving the contradiction between protection and movement freedom.
Solution Approach 2:
The protective covering is divided into distinct functional components: a clamping ring for fixation, a rotatable sliding ring for reducing friction, and the protective sheath itself. This segmentation allows each component to perform its specific function optimally - the clamping ring provides secure attachment while the sliding ring minimizes mechanical resistance during rotation.
2Reliability
If the protective sheath is tightly attached to prevent detachment, then protection is maintained, but the protective sheath may twist during robot hand axis movements
Solution Approach 1:
The rotatable sliding ring provides a dynamic solution that allows the protective sheath to rotate freely during movements, preventing twisting and deformation. The sheath remains securely attached through the clamping ring while the sliding ring accommodates orientation changes, maintaining both attachment stability and preventing distortion.
3Strength
If the protective sheath material is lengthened to counteract tensile load, then the risk of tearing is reduced, but the volume of the protected area increases
Solution Approach 1:
The clamping ring is positioned and secured in advance on the robot hand axis, creating a fixed reference point. The protective sheath is then attached to this pre-positioned clamping ring, ensuring proper tension distribution without excessive material length. This preliminary positioning prevents both tearing and excessive volume increase.
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.