A method for automatically feeding liquid in the dyeing process of multi-component dyes

A dyeing process and multi-component technology, applied in the processing of textile materials, equipment configuration for processing textile materials, liquid/gas/steam textile material processing, etc., can solve the problems of narrow detectable concentration range, dye compatibility change, calculation process Complicated problems, to achieve the effect of improving the success rate of dyeing, wide concentration range and high concentration

CN109811493BActive Publication Date: 2020-05-01DONGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2020-05-01

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Abstract

The invention relates to an automatic liquid feeding method for dyeing processes of multi-component dyes. In the dyeing process of the multi-component dye A, concentrations of all the dyes in dye liquid are monitored online and real-timely; after the percentage of the mass of each dye to the total mass of the dyes is calculated according to the concentrations of all the dyes in the dye liquid, thepercentages of all the dyes are input into the same BP neural network model simultaneously, K0 values of all the dyes are output by the BP neural network model, and an absolute value of the difference obtained by subtracting the minimum value from the maximum value of the K0 values is D<max>; the change rate of D<max> relative to D<max><0> is calculated, the change rate is compared with a threshold value, and if the change rate is smaller than the threshold value, no dye liquid is replenished; otherwise, the dye liquid is replenished till the concentrations of all the dyes are equal to initial concentrations. The automatic liquid feeding method is simple, by monitoring the concentrations of all the dyes in the dye liquid online and real-timely, the dyeing result approaches to the target effect to the utmost extent, on-line feedback control is achieved, the quality of dyed products is improved, the dyeing one-time success rate is increased, and the better dyeing effect is achieved.
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Description

technical field

[0001] The invention belongs to the technical field of dyeing online automatic control in the printing and dyeing industry, and relates to an automatic liquid supply method in the dyeing process, in particular to an automatic liquid supply method in the dyeing process of multi-component dyes. Background technique

[0002] During the dyeing process, the dyeing stability has a great relationship with the instantaneous synchronous dye uptake rate of the dye in the dye solution tank, especially for multi-component dye color matching, the stability of the dyeing shade is closely related to the multi-component dye during this period. The synchronous dyeing rate within the time has a great relationship, the synchronous dyeing rate is consistent, the stability of the dye is better, and the change of the head-to-tail color difference is small, otherwise the head-to-tail color difference may occur. Therefore, it is an important direction to improve dyeing technology an...

Examples

Embodiment Construction

[0037] The present invention will be further described below in combination with specific embodiments. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0038] A method for automatically feeding liquid in a multi-component dyeing process, the specific steps are as follows:

[0039] (1) training BP neural network;

[0040] (1.1) Obtain the K of each dye in multiple dye formula B 0 Value (the initial dyeing rate of each dye on the fabric per unit mass during the dyeing process), dye formulation B includes three dyes (reactive red 239, reactive yellow 176 and reactive blu...