Yarn Winding Machine Traverse Arm Acute Angle Geometry
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Solution Overview
Problem
Conventional yarn winding machines face issues with yarn path bending near traverse ends, leading to increased winding tension, package hardness, and potential stitching, while also compromising production efficiency due to collisions between the traverse arm and yarn guiding members.
Innovation Solution
A yarn winding machine design featuring a traverse arm with a yarn guide section positioned to form an acute angle or be parallel to the yarn path, reducing bending and collisions, and incorporating a suction opening portion to catch yarn ends without requiring the traverse arm to retreat, thus maintaining efficient operation and package quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the yarn guide is located downward (upstream in yarn path) when approaching close to a traverse end, then the yarn can be guided effectively, but the yarn is pulled in a downward direction causing increased winding tension, increased package hardness, and stitching, degrading package quality
Solution Approach 1:
The patent changes the spatial arrangement of the yarn guide from a downward (upstream) position to a position that forms an acute angle with the yarn path direction. This dimensional repositioning allows the yarn guide to effectively guide yarn while avoiding the downward pulling force that causes increased tension and package hardness, thus resolving the contradiction between guidance effectiveness and tension control.
2Reliability
If the traverse arm is moved to an outside of a traverse width to prevent collision with suction mouth, then collision is prevented, but the suction mouth cannot catch yarn end from package until traverse arm retreats, decreasing production efficiency
Solution Approach 1:
The patent repositions the traverse arm in a different spatial dimension by having it form an acute angle with the yarn path rather than moving it completely outside the traverse width. This angular arrangement allows the traverse arm to operate within the traverse width while maintaining sufficient separation from the suction mouth to prevent collision, enabling the suction mouth to catch yarn ends immediately without requiring traverse arm retreat, thus resolving the contradiction between collision prevention and production efficiency.
3Productivity
If the traverse arm reciprocates to traverse the yarn, then yarn can be wound into package, but yarn path bends at traverse ends causing increased winding tension and potential stitching
Solution Approach 1:
The patent changes the geometric parameter of the yarn guide's position relative to the yarn path by forming an acute angle. This parameter modification allows the yarn guide to effectively traverse the yarn during winding operations while minimizing yarn path bending at traverse ends, thereby maintaining both productivity and package quality without stitching or excessive tension.
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
The design minimizes yarn path bending, prevents collisions, and enhances package quality by stabilizing yarn behavior, reducing the risk of stitching, and improving productivity by allowing continuous operation without the need for traverse arm retreatment.
Implementation Method 1
a suction opening portion adapted to catch the yarn end from the package
Data Source
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AI summary
An automatic winder includes a yarn supplying section (11), a cradle (23), a contact roller (29), a traverse arm (74), a traverse driving motor (76), a splicer device (14), and an upper yarn catching member (26). The cradle 23 rotatably supports a winding bobbin. The contact roller (29) rotates while making contact with a package (30). The traverse arm (74) traverses yarn using a yarn guide section (73) located at a tip end thereof. The traverse driving motor (76) rotationally drives the traverse arm (74). The splicer device (14) connects yarn ends. The upper yarn catching member (26) can catch the yarn end from the package (30). When viewed from an axial direction of the contact roller (29), a rotational axis line (L1) of the traverse arm (74) and a yarn path line (L3), which is formed by extending a yarn path near the yarn guide section (73) at a traverse end, intersect while forming an acute angle or are parallel to each other.