Half Cutter Blade Holder Force Distribution for Tape Printing
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Solution Overview
Problem
Existing half cut mechanisms concentrate cutting load at the central portion of the blade, resulting in uneven cutting depths across the width of the print tape, with deeper cuts in the center and shallower cuts at the ends.
Innovation Solution
A half cutter design featuring a blade holder with a pressure receiving portion and a transmission section that distributes the pressing force equally to both ends of the blade edge, preventing excessive cutting depth in the center and ensuring consistent cuts across the tape width.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the cutter is pressed against the receiving table, then the cutting force is sufficient, but the cutting depth becomes uneven across the tape width
Solution Approach 1:
The blade holder is divided into a pressure receiving portion and a transmission section. The transmission section includes multiple pressing portions positioned at different locations (central and both end portions in the width direction) to segment the force application points, ensuring uniform cutting depth across the tape width while maintaining sufficient cutting force.
2Productivity
If the blade is pressed at the central portion, then the cutting action is effective, but the end portions of the tape are insufficiently cut
Solution Approach 1:
The transmission section provides different pressing characteristics at different locations: the central pressing portion and the two end pressing portions are positioned to apply appropriate pressure locally. This ensures that each region of the blade edge (central and end portions) achieves the necessary cutting depth, preventing insufficient cutting at the ends while maintaining effective cutting overall.
Data Source
AI summary
A half cutter includes a blade, a blade holder to which the blade is fixed, and a blade receiving member which the blade approaches to or departs from. The blade holder has a pressure receiving portion that receives a pressing force which presses the blade holder against the blade receiving member, and a transmission section that transmits the pressing force received by the pressure receiving portion to both end portions of the blade in an extending direction of a blade edge of the blade.