Drawing-In Quality Control and Error Detection
topic
Drawing-in quality verification uses automated optical inspection systems that scan the drawn-in warp ends across the full machine width after drawing-in completion, detecting threading errors including wrong shaft sequence, missing heddles, crossed ends, and incorrect reed denting by comparing the detected thread pattern against the programmed threading sequence before the warp beam reaches the weaving machine.
Role
Prevents the costly weaving defect of threading errors that produce incorrect weave pattern interlacing across the full fabric length by detecting threading mistakes at the drawing-in stage before weaving begins, where correction requires only re-drawing individual incorrect ends rather than the discarding of fabric produced with threading errors on the weaving machine.
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