Knot detection device and detection method

Abstract

The invention discloses a knot detection device which comprises a base frame, a fixed plate, a movable plate and a monitoring device, wherein the base frame comprises a base plate, a tow leading-in hole and a tow leading-out hole, and the tow leading-in hole and the tow leading-out hole are formed at an interval; the fixed plate is fixedly arranged on the base plate and located between the tow leading-in hole and the tow leading-out hole; the movable plate can be rotationally arranged on the base plate and is located between the tow leading-in hole and the tow leading-out hole; an elastic reset device which can enable the movable plate to recover to a set position is arranged on the movable plate; a tow passes between the movable plate and the fixed plate; when a knot on the tow passes between the movable plate and the fixed plate, the movable plate rotates; the monitoring device monitors the rotation degree of the movable plate, when the rotation degree of the movable plate reaches a limit parameter of the monitoring device, the monitoring device is triggered, the allowed size of the knot is controlled, damage to an original tow is little, a single fiber glass filament cannot be pulled off, and the lengths of original combined tows are consistent. The invention further discloses a knot detection method.

Description

technical field [0001] The invention relates to the technical field of yarn knot detection, in particular to a yarn knot detection device and a detection method thereof. Background technique [0002] When winding the glass fiber ply yarn, the raw filament bundles need to be extracted from multiple raw filament cakes at high speed (generally above 300m / min) and combined into a large strand of glass fiber yarn, and then wound into a cylinder on the winder yarn balls. The raw yarn cake is obtained by arranging the glass fiber raw yarn bundles on the head of the wire drawing machine layer by layer according to a certain line ratio in the wire drawing process and winding them up. Its shape is similar to a saddle shape. After drying For winding. [0003] On the raw yarn cake, the inner and outer layers of the raw yarn bundles are in contact with each other, and there is a certain cohesion between them because the surface of the glass fiber is coated with a sizing agent, and the ...

AI Technical Summary

Problems solved by technology

[0014] The object of the present invention is to provide a kind of yarn knot detection device, to solve the problem that in the prior art, the size of the allowed yarn knot cannot be controlled according to the actual needs, the damage to the glass fiber original filament bundle is large, the single glass fiber filament is broken, and the combined The technical problem of the inconsistency of the original filament bundle length in the glass fiber yarn after; Another object of the present invention is to provide a kind of yarn knot detection method

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