Printer Cutting Device Holding Mechanism for Power Reduction
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Solution Overview
Problem
The existing cutting devices consume excessive power during half-cut operations due to continuous motor rotation, which can reduce battery life when used with battery-powered systems.
Innovation Solution
A cutting device with a receiving base, a movable cutting blade, and a rotation drive mechanism that moves between retracted and cutting positions, utilizing a cam plate and drive pins to control blade position and power usage, allowing for efficient half-cutting without continuous motor rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cutter motor is driven continuously in the reverse rotational direction to hold the movable blade pressed against the receiving base during half-cut operation, then the blade remains in the cutting position, but the amount of electric power consumed increases
Solution Approach 1:
The motor is driven periodically rather than continuously. The drive stopping portion stops the motor after the movable blade reaches the cutting position, and the position holding portion maintains the blade position using a cam mechanism with a holding portion that engages with a drive pin, eliminating the need for continuous motor operation while maintaining reliable positioning
Solution Approach 2:
A cam mechanism acts as an intermediary between the motor and the movable blade. The cam mechanism includes a holding portion that engages with a drive pin on the movable blade, mechanically maintaining the blade in the cutting position without requiring continuous motor power, thus mediating between the motor's intermittent operation and the blade's stable positioning
2Device complexity
If a single cutter motor is used to drive both first and second cutting mechanisms, then the device complexity is reduced, but the control precision for different cutting operations becomes more difficult
Solution Approach 1:
The system uses dynamic control of a single motor to achieve different cutting functions. The cam mechanism is designed with specific geometric profiles that dynamically convert the motor's rotational motion into precise linear motion for both full-cut and half-cut operations, allowing one motor to achieve the precision of multiple motors through dynamic motion control
Solution Approach 2:
A single cutter motor is designed to perform multiple functions by driving both the first cutting mechanism (full-cut) and the second cutting mechanism (half-cut) through a universally designed cam mechanism that can selectively position blades for different cutting operations, making the motor universal for both cutting functions
Data Source
AI summary
A first movable portion has a cutting blade and configured to move between a first retracted position and a first cutting position. A first operating portion is a movable body configured to move in conjunction with a rotation drive portion. The first operating portion is configured to cause the first movable portion to move toward the first cutting position, and to cause the first movable portion to move toward the first retracted position. A drive stopping portion is configured to stop the rotation of the rotation drive portion, when the first movable portion reaches the first cutting position. A position holding portion is configured to hold a position of the first operating portion, when the first movable portion reaches the first cutting position.