Sewing Machine Adjustable Plate Element for Material Feed Control
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Solution Overview
Problem
Existing sewing machines struggle to precisely sew together two plies of different materials or with incongruent contours in a fully automatic manner.
Innovation Solution
A sewing machine with a vertically adjustable plate element equipped with a magnet and electromagnet, allowing for continuous adjustment of material feed and position relative to each other, utilizing a combination of permanent magnets and an electromagnet to control the plate element's position and guide the materials precisely.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed plate element is used in the material feed area, then the structure is simple, but the material feed cannot be adjusted for different materials and contours
Solution Approach 1:
The plate element is made dynamically adjustable in the vertical direction through an adjustment device. This allows the plate element's position to be changed during operation to adapt to different material types and contours, transforming a static structure into a dynamic one that can respond to varying requirements.
Solution Approach 2:
The adjustable plate element acts as an intermediary between the support surface and the material plies. By positioning the plate element at different heights, it mediates the feed of both material plies independently, enabling precise control over material positioning and feed rates for different material combinations.
2Manufacturing precision
If the plate element distance from support surface is reduced to slow down material feed, then material feed control is improved, but the adjustment range is limited
Solution Approach 1:
The adjustment mechanism operates in the vertical dimension (height adjustment of the plate element), which is perpendicular to the material feed direction. This allows independent control of material feed rates without interfering with the horizontal sewing process, providing precise positioning capability across a wide adjustment range.
Solution Approach 2:
The system changes the vertical position parameter of the plate element to control material feed characteristics. By adjusting this single parameter, the feed rates of both material plies can be independently controlled, enabling precise position control while maintaining adaptability across different material types and thicknesses.
3Manufacturing precision
If separate feed control for two material plies is implemented, then seam alignment precision is improved, but the device complexity increases
Solution Approach 1:
The single adjustable plate element serves multiple functions: it controls the feed of both material plies simultaneously, acts as a reference surface for positioning, and can be adjusted to accommodate different material thicknesses. This multi-functionality achieves separate feed control without requiring separate control mechanisms for each material ply.
Solution Approach 2:
The patent replaces complex mechanical feed control systems with a simpler vertical adjustment mechanism. Instead of using separate mechanical devices to control each material ply's feed, the system uses the vertical position of a single plate element to influence both feeds, significantly reducing mechanical complexity while maintaining precision.
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
Enables precise and fully automatic sewing of materials with different properties and contours by controlling the feed and position of the materials relative to each other, ensuring accurate seam alignment.
Implementation Method 1
the plate element (4) is equipped with a magnet (8), which cooperates with the electromagnet (6)
Data Source
AI summary
A sewing machine includes a support surface for two plies of material to be sewn together and a sewing mechanism that is attached to the support surface and is in operative connection with a machine controller, wherein a plate element positioned between the two material plies is arranged in the material feed area thereof. A vertical adjustment device for the plate element that is actuatable by the machine controller adjusts a vertical distance between the support surface and the plate element, and thus also influences the feed of material to the sewing mechanism. The vertical adjustment device is equipped with an electromagnet for adjusting the position of the plate element. The plate element is equipped with a magnet, which cooperates with the electromagnet.