Sewing Machine Embroidery Pattern Positioning Adjustment
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Solution Overview
Problem
Existing embroiderable sewing machines face difficulties in making precise adjustments of embroidery pattern location due to the proportional correlation between the movement of the pattern image on the display and the zoom rate, making subtle adjustments challenging, especially at higher zoom rates.
Innovation Solution
Incorporating a movement amount modifier that adjusts the movement amount of the embroidery pattern image or frame based on the specified zoom rate, ensuring a constant movement amount irrespective of the zoom rate, allowing for precise and easy adjustments of the embroidery pattern location.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the zoom rate of the embroidery pattern image is increased, then the image size is enlarged for better visibility, but the movement amount per transfer key operation becomes too large for precise location adjustment
Solution Approach 1:
The patent applies dynamics by making the transfer amount variable based on the zoom rate. The control unit dynamically adjusts the transfer amount of the embroidery pattern image in the display according to the current zoom rate, ensuring that the movement per transfer key operation remains appropriate regardless of the zoom level. This resolves the contradiction by adapting the system behavior to the current state rather than using a fixed transfer amount.
2Measurement precision
If the zoom rate of the embroidery pattern image is decreased, then the movement amount per transfer key operation becomes smaller for better precision, but multiple operations are needed which reduces efficiency
Solution Approach 1:
The control unit dynamically determines the transfer amount based on the zoom rate. When the zoom rate is small, the system automatically increases the transfer amount per operation to maintain efficiency, while when the zoom rate is large, it decreases the transfer amount to maintain precision. This dynamic adjustment resolves the contradiction between precision and efficiency.
3Device complexity
If the embroidery pattern image is transferred by a fixed amount per transfer key operation, then the control logic is simple, but the location adjustment cannot be precisely controlled across different zoom rates
Solution Approach 1:
The patent changes the parameter of transfer amount based on the zoom rate. The control unit receives the zoom rate information and adjusts the transfer amount parameter accordingly before executing the image transfer. This parameter change approach maintains relatively simple control logic while achieving precise location adjustment across different zoom rates.
Data Source
AI summary
An embroiderable sewing machine including an embroidery frame holding a workpiece cloth; an embroidery frame transfer mechanism horizontally transferring the embroidery frame; a display device capable displaying an image of an embroidery pattern to be sewn; a zoom rate specifier that specifies a zoom rate for enlarging/shrinking the embroidery pattern image; an input section that receives inputs of instructions for moving a location of the embroidery pattern within an embroiderable area defined by the embroidery frame, the instructions including a movement direction and a movement amount; a movement amount modifier modifying the movement amount inputted by the input section for the embroidery pattern image based on the zoom rate specified by the zoom rate specifier; and a display controller that transfers the embroidery pattern image based on the movement amount modified by the movement amount modifier in response to the input from the input section.