Sewing Machine Parameter Control for Complex Seam Sections
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Solution Overview
Problem
Existing sewing machine methods struggle to simplify the sewing process, especially when dealing with complex materials and curved edge contours, as they lack adaptive parameter adjustments based on changing seam conditions.
Innovation Solution
An operating method for a sewing machine that automatically adjusts sewing parameters, such as arc radius and gathering value, along specific sections of the seam, allowing for optimized sewing regardless of seam division, using a position-dependent approach that can be manually or automatically controlled, and is applicable to complex parts like sleeves in clothing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the seam is divided into multiple operating seam sections with different sewing parameters, then the sewing quality for complex materials is improved, but the complexity of the sewing process increases
Solution Approach 1:
The seam is divided into multiple operating seam sections, each with specific sewing parameters assigned to them. This segmentation allows different sewing parameters to be applied to different sections of the seam, improving sewing quality for complex materials while maintaining systematic control through the division strategy.
Solution Approach 2:
Different sewing parameters are assigned to different operating seam sections based on local requirements. Each section can have customized parameters such as arc radius and gathering value, allowing the sewing process to adapt to local material characteristics and achieve optimal sewing quality in each specific area.
2Productivity
If automatic parameter changeover is implemented when changing between operating seam sections, then sewing efficiency is improved, but the risk of parameter mismatch increases
Solution Approach 1:
Sewing parameters for each operating seam section are predetermined and stored in the control device before the actual sewing process begins. The control device automatically retrieves and applies the correct parameters when transitioning between sections, ensuring both efficiency through automation and reliability through pre-validated parameter assignments.
Solution Approach 2:
The control device monitors the current operating seam section and automatically changes parameters based on the detected section. This closed-loop control ensures that the correct parameters are applied to each section, maintaining parameter matching accuracy while enabling automatic operation for improved efficiency.
3Adaptability or versatility
If manual parameter adjustment is allowed for each operating seam section, then adaptability to material variations is improved, but the time required for parameter setup increases
Solution Approach 1:
The control device provides a universal interface that supports both automatic parameter retrieval and manual parameter adjustment. Users can choose to input parameters manually for high adaptability to specific material variations, or rely on automatic parameter assignment for faster setup, making the system versatile enough to handle different production scenarios and time constraints.
Data Source
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AI summary
When a sewing machine is operated to sew together parts (12) along a seam, where at least one sewing parameter can be preset on the sewing machine (1), the joining seam is divided into several parameter seam sections (19, 20, 23, 21, 22). Sewing parameter values are also assigned to the respective parameter seam sections (19, 20, 23, 21, 22). The parts (12) are then sewn together, starting from a seam start point (17), along a sequence of operating seam sections (b1, c1, e1, f1, h1, i1) of the seam. A sewing operating parameter can be changed between each of these sequences of operating seam sections. At the beginning of the sewing process, the parts (12) are sewn together with a preset start sewing parameter value. When switching between two consecutive operating seam sections (b1, c1; e1, f1; h1, i1) the sewing parameter value is automatically changed.The automatic changeover occurs if this change takes place in a parameter seam section (19, 20, 23, 21, 22) to which a sewing parameter value is assigned that differs from the currently set sewing parameter value. This results in an operating procedure that simplifies the sewing of the fabric parts.