Loom Warp-Laying Device for Cover Thread Integration
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Solution Overview
Problem
Existing weaving machines struggle to incorporate a cover thread into woven material without altering the fabric structure or making the incorporation visible.
Innovation Solution
A weaving machine with a warp-laying device that allows for transverse movement of the cover thread guide in the weft direction, enabling the cover thread to be tied off without changing the fabric structure, and featuring multiple warp-laying elements and a retaining hook for precise control and positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the cover thread is incorporated into the woven fabric using conventional weaving machines, then the cover thread can be integrated into the fabric, but the fabric structure is altered and the incorporation becomes visible
Solution Approach 1:
The weaving machine is divided into separate functional units: a first warp-laying device for base fabric warp threads and a second warp-laying device for cover threads. This segmentation allows independent control of cover thread placement, enabling incorporation without disrupting the base fabric structure or making the incorporation visible.
Solution Approach 2:
The patent introduces an intermediary mechanism (the second warp-laying device with transverse movement capability) that mediates between the cover thread and the base fabric. This intermediary allows the cover thread to be precisely positioned and tied off without directly altering the base fabric weave structure.
2Adaptability or versatility
If the cover thread guide is moved transversely to place the cover thread, then flexible placement and pattern creation are enabled, but visible tying marks appear on the fabric
Solution Approach 1:
The second warp-laying device is designed with dynamic transverse movement capability, allowing the cover thread guide to move laterally to different positions across the fabric width. This dynamic positioning enables flexible pattern creation while the device subsequently returns to its original position, preventing visible tying marks.
Solution Approach 2:
The cover thread is preliminarily positioned at the desired location using transverse movement before the tying operation is completed. This preliminary positioning allows the thread to be placed exactly where needed for pattern creation, and the subsequent tying is performed without leaving visible marks because the device returns to its starting position.
3Manufacturing precision
If multiple warp-laying elements are used to lay additional warp threads independently, then the cover thread can be applied without changing the woven material structure, but the device complexity increases
Solution Approach 1:
The warp-laying device is segmented into multiple independent warp-laying elements, each capable of laying warp threads separately. This segmentation enables precise control over cover thread placement while maintaining the base fabric structure, with each element operating independently to reduce interference and complexity management.
Data Source
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AI summary
In order to improve a loom for producing woven goods or material (10) with an incorporated cover thread (12), it is proposed to provide a laying device at least one cover thread (12) and also a warp-laying device (9) with warp-laying elements (14) for laying further warp threads (8). The warp- laying device (9) is designed such that it can make the further warp threads (8) penetrate from a starting position through the upper shed (5) to the lower shed (4), or through the lower shed to the upper shed, and therefore the weft-insertion device (7) crosses the further warp threads (8). The laying device has at least one cover-thread guide (13) which, in the starting position of the warp-laying device (9), can be displaced transversely to the warp threads (2) by way of a transverse-movement means.