Liquid Applier Movement Control for Large Sheet Bundle Binding
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Solution Overview
Problem
Existing medium processing apparatuses face challenges in binding large sheet bundles due to increased difficulty in biting into the sheets, leading to sheet peeling, and require additional components like thermistors and heaters to prevent liquid freezing, increasing size and cost.
Innovation Solution
A medium processing apparatus with a liquid applier, post-processing device, movement assembly, and liquid storage system, controlled by processing circuitry, which stops the movement assembly when a load threshold is exceeded, ensuring efficient liquid application and binding without additional components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a liquid applier is added to enhance binding strength for large sheet bundles, then binding strength is improved, but device complexity and cost increase due to additional components
Solution Approach 1:
The liquid applier is integrated with the movement assembly that positions the post-processing device, combining two functions into a single coordinated system. The control unit manages both the liquid application and the movement operations, reducing the need for separate control mechanisms and minimizing overall device complexity while maintaining enhanced binding strength.
2Reliability
If thermistors and heaters are added to prevent liquid freezing in cold regions, then reliability is improved, but device complexity and cost increase
Solution Approach 1:
The system uses the heat generated during the crimping operation itself to prevent liquid freezing. The mechanical energy from crimping converts to thermal energy, which naturally maintains the liquid above freezing temperature. This self-heating approach eliminates the need for separate thermistors and heaters, maintaining reliability in cold regions without increasing device complexity.
3Productivity
If the movement assembly continues operating without load monitoring, then productivity is maintained, but reliability decreases due to potential damage from excessive load
Solution Approach 1:
The control unit continuously monitors the load on the movement assembly and provides feedback control. When the load exceeds a predetermined threshold, the control unit automatically stops the movement assembly to prevent damage. This feedback mechanism ensures both high productivity during normal operation and high reliability by preventing damage from excessive loads, without requiring the system to operate at reduced capacity.
Data Source
AI summary
A medium processing apparatus includes a liquid applier to apply liquid to a medium, a post-processing device to perform post-processing on a plurality of media including the medium to which the liquid is applied by the liquid applier, a movement assembly to move the liquid applier and the post-processing device in a width direction of the medium, a first liquid storage on the liquid applier to store the liquid applied to the medium, a second liquid storage to store the liquid supplied to the first liquid storage, a liquid supply passage through which the liquid is supplied from the second liquid storage to the first liquid storage; and processing circuitry to control the movement assembly. The processing circuitry stops the movement assembly when a load of a driving source of the movement assembly exceeds a threshold.