Felting Needle Sewing Machine with Woolen Yarn Guide
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Solution Overview
Problem
Existing needle felting techniques are limited to sewing nonwoven fabrics together, as they rely on fibers tangling within the fabric, and cannot effectively sew together a variety of cloth pieces beyond nonwoven materials.
Innovation Solution
A sewing machine configuration that uses a felting needle and a woolen yarn guide to intermingle woolen yarn fibers with the fibers of overlaid cloth pieces, allowing the woolen yarn to serve as a sewing thread, enabling the sewing of various cloth pieces together by thrusting the needle into both the cloth pieces and the yarn, causing them to tangle and form a secure bond.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If needle felting is used to sew cloth pieces together, then nonwoven fabrics can be sewn together easily, but the method cannot effectively sew together a variety of cloth pieces beyond nonwoven materials
Solution Approach 1:
The patent introduces woolen yarn as an intermediary material between the felting needle and the cloth pieces to be sewn. The woolen yarn is fed through a yarn guide and intermingles with the fibers of the cloth pieces as the needle thrusts into them, creating a reliable bond that works with various fabric types including woven and knitted fabrics, not just nonwoven materials.
2Ease of operation
If a felting needle is thrust into cloth pieces to cause fibers to tangle, then embroidery can be fabricated easily, but the method lacks the capability to securely join multiple cloth pieces
Solution Approach 1:
The patent combines two functions into one process: the embroidery function (decorative stitching) and the sewing function (joining cloth pieces). The woolen yarn serves dual purposes - it creates the decorative embroidery pattern while simultaneously bonding the overlaid cloth pieces together through fiber intermingling, achieving both ease of operation and strong bonding.
3Ease of manufacture
If existing needle felting methods are used, then nonwoven fabrics can be sewn together, but the sewing line does not create a secure bond for various cloth types
Solution Approach 1:
The patent uses a composite approach by combining the felting needle (metal), woolen yarn (natural fiber), and various cloth pieces (different fabric materials) into a unified sewing system. The woolen yarn acts as a composite bonding agent that interfaces between the needle and diverse fabric types, creating secure bonds through fiber intermingling while maintaining process simplicity.
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 method allows for the easy and firm sewing of multiple cloth pieces together, creating a sewing line similar to embroidery, and can be used with various types of cloth, including those not limited to nonwoven fabrics, while providing safety features like automatic needle control and manual operation options.
Implementation Method 1
needle felting in which the felting needle is thrusted into the plurality of cloth pieces and the woolen yarn is performed, and that fibers of the woolen yarn are caused to tangle with fibers of the plurality of cloth pieces
Data Source
AI summary
A sewing machine that includes a sewing bed on which a plurality of cloth pieces are placed in a manner of being overlaid on each other; a felting needle; a woolen yarn guide provided at a lower end of a safety cover for covering the felting needle; and a device configured to raise and lower the felting needle toward the plurality of overlaid cloth pieces, and the woolen yarn guide is configured to guide a woolen yarn from a bobbin or a woolen yarn ball to a sewing location, and the device is configured to raise and lower the felting needle so that needle felting in which the felting needle is thrusted into the plurality of cloth pieces and the woolen yarn is performed, and thereby the plurality of cloth pieces are sewn together.