Sewing Machine Embroidery Frame Detection and Area Adjustment
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Solution Overview
Problem
Existing sewing machines face difficulties in performing embroidery sewing on non-standard workpieces such as tubular items and shoes due to structural constraints, as they are not compatible with various types of embroidery frames.
Innovation Solution
A sewing machine with a detection system that automatically sets the sewing area and pattern orientation based on the type of embroidery frame mounted, allowing for embroidery on a variety of workpieces by adjusting the size, position, and angle of the sewing area, and enabling the machine to handle inclined frames and shoe surfaces without increasing its size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a sewing machine uses a fixed embroidery frame structure, then it can maintain simple device structure, but it cannot accommodate various types of sewing workpieces such as shoes and tubular items
Solution Approach 1:
The patent implements a detection system that dynamically identifies the mounted embroidery frame type and automatically adjusts sewing parameters. The control unit receives detection results from detection means (such as sensors or encoders) that identify frame position and orientation, then dynamically modifies the sewing area coordinates, pattern orientation, and needle drop points to match the detected frame configuration, enabling the same sewing machine to handle multiple frame types without structural modification.
Solution Approach 2:
The patent changes operational parameters (sewing area boundaries, pattern rotation angle, position coordinates) based on the detected embroidery frame type. When a different frame is mounted, the control unit retrieves pre-stored parameter sets corresponding to that frame type and applies them, allowing the system to adapt to various frames through parameter adjustment rather than physical reconfiguration.
2Ease of operation
If the sewing machine automatically detects embroidery frame type, then it can set appropriate sewing area and pattern layout, but it requires additional detection means and control complexity
Solution Approach 1:
The sewing machine performs self-identification of the mounted embroidery frame type through integrated detection means. The detection system automatically captures frame position and orientation information, and the control unit autonomously processes this data to determine the correct frame type and retrieve corresponding sewing parameters, eliminating the need for manual input or complex user setup procedures.
Solution Approach 2:
The detection means provides real-time feedback about the embroidery frame configuration to the control unit. Based on this feedback signal (such as detector position or encoder reading), the control unit automatically adjusts sewing parameters to match the detected frame type, creating a closed-loop system that ensures correct parameter settings without user intervention.
Data Source
AI summary
A sewing machine includes a frame support portion that is adapted to be detachably mounted with a selected one of plurality of embroidery frames. Each of the embroidery frames has a holding portion that is adapted to hold a sewing workpiece. A type of the embroidery frame mounted on the frame support portion is detected (step S3). A sewing area is set inside the holding portion, corresponding to the type of the embroidery frame. The sewing area is an area in which stitches can be formed. Specifically, corresponding to the type of the embroidery frame, a size of the sewing area and a position and an angle of the sewing area with respect to the frame support portion is set (steps S4 to S11). An embroidery pattern to be sewn on the sewing workpiece is identified (step S2). A layout of the identified embroidery pattern is set, corresponding to the set sewing area (step S12).