Feed Roller Guide Load Control to Prevent Media Jams
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Solution Overview
Problem
Existing medium conveying apparatuses face challenges in efficiently conveying media while minimizing power consumption and preventing mechanical jams due to improper contact between feed rollers and media.
Innovation Solution
The apparatus incorporates a feed roller, a guide, a moving mechanism, a driving source, and a drive transmission assembly that applies a load to the moving mechanism, restricting force transmission to control the guide's position and reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the guide is allowed to move freely without load restriction, then the guide can respond quickly to feed media, but force transmission from the guide to the driving source causes mechanical jams and increases power consumption
Solution Approach 1:
The drive transmission assembly is pre-configured with load-applying components (springs, dampers, or friction elements) that automatically engage when the guide moves, restricting force transmission before it can cause mechanical jams or excessive power consumption. This preliminary load application prevents the contradiction from manifesting during operation.
2Use of energy by stationary object
If the drive transmission assembly applies load to restrict force transmission, then power consumption is reduced and mechanical jams are prevented, but the guide's movement control becomes more complex
Solution Approach 1:
The drive transmission assembly uses self-regulating load-applying mechanisms such as springs that automatically adjust their force based on the guide's position and movement, or dampers that passively dissipate energy. These components require no additional control systems or power input, reducing device complexity while maintaining power consumption reduction and jam prevention.
3Productivity
If the guide maintains optimal contact with the feed roller, then media feeding efficiency is improved, but continuous contact increases power consumption
Solution Approach 1:
The load-restricting mechanism in the drive transmission assembly allows the guide to maintain optimal contact with the feed roller only during the brief periods when media feeding is required. When no media is being fed, the load restriction causes the guide to disengage or reduce contact, creating a periodic contact pattern that maintains feeding efficiency while minimizing continuous power consumption.
Data Source
AI summary
A medium conveying apparatus includes a feed roller to feed a medium, a guide to restrict contact between the medium and the feed roller, a moving mechanism to move the guide, a driving source, and a drive transmission assembly to transmit a driving force for moving the guide from the driving source to the moving mechanism. The drive transmission assembly applies a load to the moving mechanism, and the load restricts transmission of force from the guide to the driving source.