Sewing Machine Projection for Accurate Buttonhole Stitching
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Solution Overview
Problem
Existing sewing machines lack the ability to project a buttonhole pattern, making it difficult for users to accurately sew buttonholes.
Innovation Solution
A sewing machine equipped with a projector that projects a buttonhole pattern image onto a projection area, allowing the user to visualize the stitches before sewing, and a processor that controls the feed dog and needle bar to sew the buttonhole pattern.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a projector is added to project buttonhole patterns, then user convenience and sewing accuracy are improved, but device complexity increases
Solution Approach 1:
The projector is integrated into the sewing machine to serve multiple functions: projecting buttonhole patterns for guidance and displaying stitch information. This multi-functionality approach allows the addition of projection capability without requiring a completely separate device, thereby improving user convenience while limiting the increase in overall device complexity.
Solution Approach 2:
The projector acts as an intermediary between the sewing machine's control system and the user. It provides visual feedback and guidance by projecting patterns onto the workpiece, serving as a mediator that enhances user understanding and control without requiring direct complex interactions between the user and the machine's internal systems.
2Manufacturing precision
If a projector is integrated into the sewing machine, then sewing accuracy for buttonholes is improved, but device complexity increases
Solution Approach 1:
The buttonhole pattern is projected onto the workpiece before sewing begins. This preliminary visualization allows the user to verify the pattern position and dimensions ahead of time, enabling corrections to be made before actual sewing commences, thereby improving sewing accuracy without requiring complex real-time adjustment mechanisms.
Solution Approach 2:
The projector provides visual feedback by displaying the buttonhole pattern and stitch information on the workpiece surface. This feedback mechanism allows users to verify pattern alignment and make adjustments before sewing, improving accuracy. The feedback is achieved through the existing projector hardware without requiring additional complex sensing or measurement systems.
Data Source
AI summary
A sewing machine includes a pillar extending in an up-down direction, a bed extending from a lower end of the pillar in an extending direction orthogonal to the up-down direction, a needle bar, a presser bar, a projector configured to project a projection image onto a projection area on the bed, a feed dog provided on the bed and configured to move a workpiece on the bed; and a processor. The processor is configured to execute projecting a projection image onto the projection area, the projection image including a pattern image representing a buttonhole pattern, the buttonhole pattern being formed in a state in which a buttonhole presser is mounted to the presser bar, and sewing the buttonhole pattern on the workpiece by controlling the feed dog and the needle bar.