Projected Sewing Guidelines for Precise Free-Motion Stitching
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Solution Overview
Problem
Current sewing machines are inefficient and imprecise in producing stitchwork, lacking the ability to replicate human-free-motion stitching and requiring complex mechanical structures and computing elements that lead to cumbersome operations.
Innovation Solution
A sewing machine system and method that uses a light source within the sewing head to project guidelines for guiding the sewing operation, allowing users to select stitch objects with associated geometries, and project guidelines to align and sew successive lines of the geometry, leveraging onboard computing devices for efficient and aesthetically similar stitchwork.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If complex mechanical structures and computing elements are used in sewing machines, then the machine can perform various sewing operations with computerized control, but the operation becomes slow and cumbersome
Solution Approach 1:
The patent replaces complex mechanical guidance systems with optical projection. A projector mounted on the sewing machine head projects visual guidelines directly onto the workpiece, eliminating the need for complex mechanical positioning systems and computing elements. The user simply follows the projected lines with the needle, significantly simplifying operation while maintaining versatility.
2Measurement precision
If current sewing machine capabilities (camera, projector, computing elements) are used, then visual guidance is provided, but the machine cannot replicate free-motion stitching and remains inefficient
Solution Approach 1:
The patent extracts the essential guidance function from complex computing systems and isolates it as a simple optical projection system. By removing unnecessary computing elements and focusing solely on projecting visual guidelines, the system achieves both high precision in guidance and high productivity in free-motion stitching replication.
3Manufacturing precision
If manual free-motion stitching is performed, then high-quality aesthetic stitchwork is achieved, but the process is time-consuming and imprecise
Solution Approach 1:
The patent applies preliminary action by pre-calculating and projecting the exact path the needle should follow onto the workpiece before stitching begins. The projector displays the complete guideline pattern in advance, allowing the user to quickly follow the predetermined precise path without manual measurement or calculation during the stitching process, thus achieving both precision and speed.
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
The system enables efficient and qualitatively improved stitchwork akin to free-motion stitching by projecting guidelines to guide the user, enhancing precision and efficiency in sewing operations.
Implementation Method 1
a primary light source to project one or more guidelines onto the workpiece
Data Source
AI summary
A system and method, for guiding a sewing operation for a sewing machine, are provided herein. One of one or more stitch objects having stitch data associated therewith may be selected. Each of the one or more stitch objects are defined by a geometric pattern. The stitch data of the one of the one or more stitch objects is analyzed to identify one or more lines forming the geometric pattern. At least a portion of a sewing material is sewn, onto the workpiece with the needle, in a direction defined by a first of the one or more lines forming the geometric pattern. A primary light source projects a first of one or more guidelines onto the workpiece. The first of the one or more guidelines corresponds to a second of the one or more lines forming the geometric pattern.