Feeding Roller Stop Mechanism for Incorrect Attachment Prevention
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Solution Overview
Problem
Incorrect attachment of a feeding roller can hinder the feeding operation in a feeding device, leading to operational issues.
Innovation Solution
A feeding device equipped with a rotation shaft and a feeding roller featuring a through-hole, where a stop mechanism prevents the feeding roller from moving to its attachment position if attached in the wrong direction, using a protrusion portion that engages with a stop groove to restrict movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the feeding roller is made detachable for maintenance and replacement, then the ease of repair is improved, but the risk of incorrect attachment increases which hinders the feeding operation
Solution Approach 1:
The patent applies asymmetry by providing a protrusion portion on the feeding roller that corresponds to a groove portion on the rotation shaft. This asymmetric feature ensures that the feeding roller can only be attached in the correct orientation, preventing incorrect attachment while maintaining ease of replacement. The asymmetric protrusion-groove pairing creates a unique attachment direction that guarantees proper alignment.
2Ease of operation
If the feeding roller can be freely attached in any direction, then the ease of operation is improved, but the feeding operation may be hindered due to incorrect attachment
Solution Approach 1:
The patent implements preliminary anti-action by incorporating the protrusion portion and groove portion mechanism that prevents incorrect attachment before the feeding operation begins. The protrusion portion on the feeding roller fits into the groove portion on the rotation shaft only in the correct orientation, creating a mechanical constraint that eliminates the possibility of harmful incorrect attachment during operation.
3Reliability
If a stop mechanism is added to prevent incorrect attachment, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the attachment mechanism into distinct functional elements: the protrusion portion on the feeding roller and the groove portion on the rotation shaft. This segmentation allows the stop mechanism to be implemented as simple, separate geometric features rather than a complex integrated system, maintaining reliability while minimizing added complexity.
Data Source
AI summary
A feeding device includes a rotation shaft, a feeding roller that includes a through-hole and that is attached to an attachment position of the rotation shaft by moving along the rotation shaft from one end side of the through-hole through the rotation shaft in a case of attachment, and a stop mechanism that stops movement of the feeding roller before the feeding roller moves to the attachment position in a case of being moved along the rotation shaft from the other end side of the through-hole of the feeding roller through the rotation shaft.