Movement-Sensing Sewing Machine for Variable Zigzag Control
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Solution Overview
Problem
Existing sewing machines face challenges in maintaining workability and user convenience, particularly in variable zigzag sewing, due to complex speed adjustments required for different sewing types and user preferences.
Innovation Solution
A sewing machine with a movement detection unit, drive motor, control unit, and storage unit that allows for selectable first and second control modes, enabling automatic speed and pitch adjustments based on detected material movement thresholds, enhancing user operability and workability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If sewing speed is automatically controlled according to material movement speed, then sewing pitch consistency is improved, but workability for variable zigzag sewing and user preference adjustments deteriorates
Solution Approach 1:
The control unit dynamically switches between first control mode (constant speed control) and second control mode (pitch-based speed control) based on the detected sewing type. This dynamic adaptability allows the system to maintain optimal performance for different sewing operations without manual intervention, resolving the contradiction between pitch consistency and workability flexibility.
Solution Approach 2:
The system changes control parameters (speed control vs. pitch control) based on the sewing type detected by the movement detection unit. By adjusting which parameter is primarily controlled based on operational context, the system achieves both precise pitch control when needed and flexible speed control for variable zigzag sewing.
2Adaptability or versatility
If user manually adjusts sewing speed for different sewing types, then workability is improved, but manipulation complexity increases
Solution Approach 1:
The control unit automatically detects the sewing type through the movement detection unit and autonomously selects the appropriate control mode without requiring manual user input. This self-service capability eliminates the need for users to manually adjust settings, thereby reducing manipulation complexity while maintaining adaptability to different sewing types.
Solution Approach 2:
The movement detection unit continuously provides feedback on material movement characteristics, enabling the control unit to automatically adapt control parameters based on real-time operational conditions. This feedback mechanism allows the system to respond intelligently to different sewing types without user intervention, simplifying operation while preserving versatility.
Data Source
AI summary
A sewing machine includes at least: a movement detection unit for detecting a movement amount of a material to be sewn; a drive motor for operating a needle; a control unit for operating the drive motor; and a storage unit. The storage unit stores a sewing speed and a sewing pitch. The control unit is configured to implement a first control mode and a second control mode. In the first control mode, the control unit operates the drive motor at the stored sewing speed when the detected value by the movement detection unit exceeds a predetermined first threshold. In the second control mode, the control unit operates the drive motor such that the sewing is carried out at the stored sewing pitch on the basis of the detected value when the detected value exceeds a predetermined second threshold. These first control mode and second control mode are switchable.