Multi-needle Sewing Machine Color Assignment Logic
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Solution Overview
Problem
Conventional multi-needle sewing machines face difficulties in distinguishing embroidery patterns from the workpiece cloth when the pattern colors are similar to the cloth color, leading to incorrect recognition of the pattern, and require cumbersome manual designation and confirmation of thread colors for each pattern portion.
Innovation Solution
A multi-needle sewing machine with a spool setting portion, a spool color storage unit, and an input unit that allows users to designate or randomly assign thread colors to pattern-by-color portions, ensuring non-overlapping colors are used for each portion based on user input or stored thread spool colors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If thread colors for pattern portions are set based on pre-established coloration data, then the embroidery pattern can be sewn with consistent color schemes, but the user cannot easily designate custom colors for specific pattern portions
Solution Approach 1:
The system automatically assigns thread colors to pattern portions by randomly selecting from available spool colors, eliminating the need for manual color designation. The control unit autonomously determines color assignments based on the embroidery pattern data and available thread spools, allowing users to simply load spools and start sewing without tedious manual color selection.
Solution Approach 2:
The system changes the color assignment parameter from fixed pre-established colors to random selection from available spool colors. This allows the same embroidery pattern to be sewn with different color combinations depending on which spools are loaded, providing versatility while maintaining ease of operation.
2Manufacturing precision
If manual confirmation of thread colors for each pattern portion is required, then color accuracy can be controlled, but the embroidery sewing process becomes troublesome and time-consuming
Solution Approach 1:
The control unit automatically performs color assignment without requiring manual confirmation. It reads the embroidery pattern data, identifies pattern portions, and autonomously assigns appropriate thread colors from the loaded spools, eliminating time-consuming manual verification while maintaining accurate color assignment.
Solution Approach 2:
The system performs preliminary color assignment before the actual sewing operation. The control unit pre-determines which thread color corresponds to which pattern portion based on the embroidery data and available spools, so that when sewing begins, the needle bars are already configured with the correct colors, eliminating the need for during-process manual confirmation.
3Ease of operation
If the same color is used for all pattern portions, then the sewing process is simple, but the embroidery pattern loses distinction and may be mistaken for the workpiece cloth
Solution Approach 1:
The system changes the color parameter from uniform single-color to varied multi-color assignment. By randomly selecting different colors from the loaded spools for different pattern portions, the system maintains sewing simplicity (no manual color selection needed) while ensuring pattern portions are visually distinguishable from the workpiece cloth and from each other.
Solution Approach 2:
Different pattern portions are assigned different thread colors based on their specific requirements in the embroidery pattern. Each pattern portion receives a color assignment that distinguishes it from both the workpiece cloth and other pattern portions, while the overall process remains automated and simple.
4Adaptability or versatility
If a limited set of pre-established colors is used for embroidery patterns, then the coloration is consistent and recognizable, but the user cannot achieve unexpected or diverse color combinations
Solution Approach 1:
The system uses the thread spools that the user has already loaded into the machine, eliminating the need for a complex pre-established color database. The control unit automatically selects from the available spools, providing diverse color combinations based on user-chosen materials while keeping the system simple and adaptable to user preferences.
Solution Approach 2:
The color assignment system is dynamic rather than static. Instead of using fixed pre-established colors, the system randomly selects from available spool colors based on the specific embroidery pattern and loaded materials. This allows the same pattern to produce different color combinations with different spool configurations, providing versatility without increasing system complexity.
Data Source
AI summary
A multi-needle sewing machine includes an assigning unit that assigns thread color data to each pattern-by-color portion. The assigning unit is configured to determine, for each pattern-by-color portion, whether or not the user's designation of the pattern-by-color portion has been received. When the user's designation for the pattern-by-color portion has been received, the assigning unit is configured to assign the user's designation as thread color data for the pattern-by-color portion. When the user's designation for the pattern-by-color portion has not been received, the assigning unit is configured to randomly extract and assign a non-overlapping color as thread color data for the pattern-by-color portion from the data of a plurality of thread colors stored in the spool color storage unit. The machine is configured to execute sewing of the embroidery pattern for the pattern-by-color portion based on the thread color data assigned by the assigning unit.