Printer Cutting Blade Geometry for Hole-Formation Compensation
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Solution Overview
Problem
In existing printers with cutting devices, deformation of the cutting blade due to material flow during hole formation leads to variations in the distance between the blade edge and the support base, affecting cutting precision.
Innovation Solution
The cutting device incorporates a cutting blade with strategically positioned convex portions corresponding to holes along its length, coupled with a holding member that allows the blade to move between cutting and spaced positions, maintaining a consistent distance to the support base without increasing the blade's size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the first hole is formed to the cutting blade by press working, then the cutting blade can be fixed to the holding member, but deformation occurs due to material flow leading to variation in distance between blade edge and support base
Solution Approach 1:
The blade edge is designed with convex portions at specific locations corresponding to the first and second holes. These convex portions create localized geometric features that compensate for the deformation caused by press working, ensuring that the distance from the blade edge to the support base remains consistent despite the material flow during hole formation.
Solution Approach 2:
The convex portions are pre-formed on the blade edge at positions corresponding to the holes. This preliminary geometric compensation counteracts the deformation that will occur during the press working process, preventing the variation in distance between the blade edge and support base before the actual hole formation takes place.
2Manufacturing precision
If the cutting blade is made larger to accommodate multiple holes and convex portions, then cutting precision can be improved, but the size of the cutting blade increases
Solution Approach 1:
Instead of increasing the overall blade size, the invention introduces convex portions only at specific critical locations on the blade edge corresponding to the hole positions. This localized geometric modification improves cutting precision without requiring an increase in the overall dimensions of the cutting blade.
Solution Approach 2:
The blade edge is segmented into multiple sections, with convex portions strategically positioned at locations corresponding to the first and second holes. This segmentation allows precise control of the blade edge geometry at critical points while maintaining a compact overall blade size.
Data Source
AI summary
A cutting device includes a support base, a cutting blade, and a holding member. The cutting blade has first and second holes and a blade edge. The blade edge has a first convex portion and a second convex portion, provided at a position corresponding to the first and second holes, respectively. In a case where the cutting blade is arranged at a cutting position, a maximum value of a distance between the blade edge and the support base within a range between the first and second holes in a longitudinal direction of the cutting blade is smaller than a maximum value of a distance between the blade edge and the support base. The cutting blade is fixed to the holding member by a first hole coupling member, and the holding member holds the cutting blade so as to be movable to the cutting position and a spaced position.