Liquid Applier and Crimper Layout for Stable Sheet Binding
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Solution Overview
Problem
Medium processing apparatuses face challenges in applying a stable amount of liquid to wavy or curved sheets during crimp binding, leading to unstable binding and potential sheet peeling due to disturbed sheet shapes.
Innovation Solution
A medium processing apparatus with a conveying unit, liquid applier, and crimper, where the liquid applier applies liquid using a presser and liquid application member, followed by the crimper pressing and deforming the sheets to crimp and bind them.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If liquid is applied to wavy or curved sheets during crimp binding, then binding strength is improved, but sheet stability deteriorates causing sheets to float from tray
Solution Approach 1:
The presser applies pressure to the sheet before liquid application, flattening wavy or curved sheets in advance. This preliminary action ensures the sheet remains stable during subsequent liquid application and crimp binding, preventing the sheet from floating while still allowing adequate liquid penetration for strong binding.
2Productivity
If increased number of sheets are bound, then productivity is improved, but binding difficulty increases making sheets peel off
Solution Approach 1:
The presser flattens thick sheet bundles before liquid application, creating uniform contact surfaces that enable reliable binding even for increased numbers of sheets. This preliminary flattening action ensures consistent liquid distribution and crimp penetration throughout the bundle, preventing peeling while maintaining productivity.
Solution Approach 2:
The system adjusts pressing force parameters to accommodate varying sheet bundle thicknesses. By dynamically changing the pressing force applied by the presser, the system maintains optimal binding conditions whether processing few or many sheets, ensuring binding reliability across different productivity levels.
3Manufacturing precision
If sheets are flattened before liquid application, then liquid application stability is improved, but additional processing step increases complexity
Solution Approach 1:
The presser function is integrated into the existing liquid application unit, combining sheet flattening and liquid application operations into a single integrated component. This merging eliminates the need for a separate flattening device, reducing overall system complexity while achieving stable liquid application on flattened sheets.
Solution Approach 2:
The presser serves multiple functions: it flattens wavy sheets, stabilizes sheet bundles of various thicknesses, and prepares surfaces for both liquid application and subsequent crimp binding. This multi-functionality reduces the need for additional specialized components, keeping the device relatively simple while improving manufacturing precision.
Data Source
AI summary
A medium processing apparatus includes a conveying unit, a liquid applier, and a crimper. The conveying unit conveys a medium in a conveyance direction. The liquid applier applies liquid to the medium conveyed by the conveying unit. The liquid applier includes a presser and a liquid application member. The presser presses the medium. The liquid application member contacts and is separated from the medium while the presser presses the medium. The crimper presses and deforms a plurality of media including the medium to which the liquid is applied by the liquid applier, to crimp and bind the plurality of media.