Rotating Bobbin Embroidery Shuttle for Wire Thread Processing
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Solution Overview
Problem
Existing embroidery machines face limitations in processing a wide range of materials due to the mechanical design of thread guides, particularly with back threads, which restricts the choice of yarn and causes mechanical issues, and are not suitable for materials like wires or glass fibers, limiting the production of mono-material textiles.
Innovation Solution
An embroidery shuttle with a rotatable bobbin having external thread pull-off, allowing the use of various materials as back threads, including metals and fibers, by mounting the bobbin between spaced running surfaces with low friction bearing surfaces, enabling the bobbin to rotate and wind threads efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional non-rotating bobbins with internal take-up are used, then the bobbin structure is simple and easy to manufacture, but the selection of yarn materials is severely limited and cannot process materials like wires or glass fibers
Solution Approach 1:
The bobbin is designed to rotate during operation, transforming from a static component to a dynamic one. This rotation enables external thread take-up, allowing diverse materials including wires and glass fibers to be processed while maintaining a relatively simple bobbin structure without complex internal mechanisms
Solution Approach 2:
The patent inverts the traditional internal take-up design by implementing external take-up on a rotating bobbin. This inversion allows the thread to be drawn from the outside of the bobbin rather than from internal channels, fundamentally changing how thread is fed and enabling processing of materials that cannot be wound internally
2Productivity
If high embroidery speeds are used, then productivity increases, but the requirement for large thread storage in shuttles increases to avoid downtime
Solution Approach 1:
The bobbin is pre-filled with large quantities of thread before being installed in the shuttle. The rotating mechanism ensures continuous thread supply during high-speed operation, eliminating the need for frequent shuttle changes and maintaining high productivity without compromising thread storage capacity
3Adaptability or versatility
If rotating bobbins with external take-up are used, then various materials including metals and fibers can be processed, but the bobbin requires precise mounting with bearing surfaces to prevent unwanted movement
Solution Approach 1:
The bobbin holder is designed with localized bearing surfaces at specific contact points with the bobbin. These bearing surfaces provide precise rotational support exactly where needed, enabling accurate bobbin mounting and rotation while keeping the overall structure simple and not requiring high precision throughout the entire component
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
This solution enables the processing of previously unprocessable materials as back threads, allowing for new material pairings and mono-material textiles, such as high-temperature heaters and 3D electrodes, with reduced mechanical stress and curl formation, enhancing the versatility and efficiency of embroidery machines.
Implementation Method 1
mounting the bobbin between spaced running surfaces with low friction bearing surfaces
Data Source
Figure 1~3
AI summary
The invention relates to an embroidery shuttle (1), comprising a bobbin carrier (20) and a bobbin (10), wherein the bobbin (10) comprises at least two spaced apart running surfaces (12, 14) and a bobbin body (16) extends between the running surfaces (12, 14). A rear thread (30) can be wound onto the bobbin body, wherein the bobbin carrier (20) has bearing surfaces (22, 24) for the running surfaces (12, 14), so that the bobbin (10) is rotatably mounted in the embroidery shuttle (1) about an axis of rotation (d). According to the invention, the bobbin carrier (20) essentially prevents a relative movement of the bobbin (10) along the axis of rotation (d).