Zigzag Sewing Machine Automatic Pause Control
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Solution Overview
Problem
Zigzag sewing machines lack the ability to automatically pause and resume sewing at designated positions within a combinational pattern, requiring manual intervention for thread color changes and position adjustments, which increases user labor and complexity.
Innovation Solution
Incorporating a sewing mechanism with a command data insertion section that allows pause data to be inserted into pattern data strings, enabling automatic pause and resume functionality by sending pause signals to the sewing machine drive unit, and displaying pause symbols in the pattern selection interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual operation (key switch or foot controller) is used to stop the sewing machine midway of a pattern string, then the user can control the sewing process for thread color changes or position adjustments, but the user needs to pay close attention to timing and manually monitor the sewing progress, increasing operational complexity and labor
Solution Approach 1:
The system allows users to pre-designate pause positions within pattern strings by inserting pause data at specific locations in the pattern data string before sewing begins. This preliminary action eliminates the need for real-time manual monitoring and timing decisions during sewing, as the machine automatically pauses at pre-specified positions for thread color changes or position adjustments.
2Extent of automation
If the sewing machine automatically stops when a pattern string is completed, then the user can utilize this function for combination stitching, but the user needs to manually select the second pattern string after completing the first pattern string, increasing user labor and time consumption
Solution Approach 1:
The system enables users to pre-arrange multiple pattern strings in a desired sequence and insert pause data at appropriate positions between them. This preliminary configuration allows the machine to automatically transition from one pattern to the next after pausing, eliminating the need for manual pattern reselection and reducing time loss during combination stitching operations.
3Extent of automation
If pause data is inserted into the pattern data string, then the sewing machine can automatically pause and resume at designated positions, but the pattern data structure becomes more complex
Solution Approach 1:
The pattern data string is segmented into distinct units by inserting pause data at specific positions. Each segment represents a complete sewing sequence that can be executed independently, with the pause data acting as a delimiter that signals the machine to halt and await user input before continuing to the next segment. This segmentation simplifies the overall data structure by creating modular, manageable units.
Data Source
AI summary
A zigzag sewing machine including a sewing mechanism; a first storage device that stores pattern data that include attribute data and stitch data; a pattern selection section that sequentially selects optional pattern data stored in the first storage device; a second storage device that stores pattern data that have been selected by the pattern selection section as an arranged combinational pattern; a command data insertion section that inserts and adds pause data at an optional position midway of a pattern data string stored in the second storage device; a pause command section that reads out the pause data and that supplies the pause signal to the sewing machine drive unit; and a display device that displays the combinational pattern, the display device further displaying a pause symbol at a position in the combinational pattern where the pause symbol has been inserted and added.