Printing Device Blade Warping Prevention Mechanism
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Solution Overview
Problem
In printing devices with a cutter blade system, the inclusion of a blade guide causes a reaction force from the second blade to act on the first blade, potentially leading to warping and improper alignment, which affects the cutting efficiency.
Innovation Solution
The printing device incorporates a warping prevention portion that presses the first blade in a direction opposite to the reaction force when moving from the overlap start position to the cutting position, preventing or reducing warping and ensuring proper alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a blade guide is included to guide the movement of the first blade, then the movement guidance is improved, but the first blade warps into a convex shape due to reaction force from the second blade
Solution Approach 1:
The warping prevention portion applies a preliminary counteracting force to the first blade in the direction opposite to the expected warping (first direction). This preliminary anti-action prevents the blade from warping into a convex shape by counterbalancing the reaction force from the second blade before the warping can occur during the cutting operation.
2Productivity
If the first blade overlaps the second blade during cutting, then the cutting function is achieved, but the reaction force causes improper alignment between blades
Solution Approach 1:
The warping prevention portion provides preliminary counteraction to maintain proper blade alignment by applying force in the direction opposite to the reaction force. This ensures that when the first blade overlaps and contacts the second blade during cutting, the blades remain properly aligned without warping or improper positioning.
3Productivity
If the first blade is pressed against the second blade for cutting, then the cutting efficiency is improved, but the reaction force acts in the first direction causing warping
Solution Approach 1:
The warping prevention portion applies a preliminary counteracting force in the direction opposite to the reaction force generated during cutting. This maintains blade shape stability by preventing convex warping while allowing the first blade to press against the second blade for efficient cutting operation.
Solution Approach 2:
The warping prevention portion acts as a counterbalancing mechanism that provides an opposing force to the reaction force from blade contact. This counterweight effect stabilizes the first blade against warping while maintaining the cutting pressure needed for efficient operation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration allows the first and second blades to rub against each other appropriately, maintaining cutting efficiency and preventing warping of the first blade.
Implementation Method 1
a warping prevention portion configured to press the first blade in a second direction opposite to the first direction when the first blade portion moves from the overlap start position to the cutting position, to prevent the first blade from warping into a convex shape in the first direction or reduce such warping
Implementation Method 2
a blade guide located in the first direction relative to the second blade and configured to guide movement of the first blade with the first blade between the blade guide and the second blade
Data Source
AI summary
A printing device includes: a second blade; a first blade portion including a first blade and configured to cut print paper by moving from a standby position at which the first blade is away from the second blade, via an overlap start position at which the first blade starts overlapping the second blade on a side of the second blade in a first direction, to a cutting position; a first blade guide located in the first direction relative to the second blade and configured to guide movement of the first blade with the first blade between the first blade guide and the second blade when the first blade portion moves from the overlap start position to the cutting position; and a warping prevention portion configured to press the first blade in a second direction opposite to the first direction when the first blade portion moves from the overlap start position to the cutting position, to prevent the first blade from warping into a convex shape in the first direction or reduce such warping.