Weight-volume mixing color matching method, reclamation mechanism and automatic color mixer for automobile refinishing paintings

A weight-volume mixing color matching method for automobile refinishing paints, comprising:

• (1) finding out an automobile information ID card printed with a color number on an automobile body to be refinished, finding out a color code of the automobile body or getting a close color card code through comparison, and finding out a weight formula of the refinishing paints to be used through a reader or a computer color-matching system;
• or using a spectrophotometer to detect coatings of the automobile body to be refinished at a position where a surface of the coatings is complete, and outputting a weight formula of the refinishing paints after calculation;
• (2) converting the weight formula of the refinishing paints into a corresponding volume formula of the refinishing paints according to a measured specific gravity of a color masterbatch;
• (3) calculating types of the required color masterbatches and volumes required for each of the color masterbatches according to the volume formula of the refinishing paints and the area to be refinished, and
• calculating the types of the required color masterbatches and the weight required for each of the color masterbatches according to the weight formula of the refinishing paints and the area to be refinished;
• (4) finding out a color masterbatch bucket corresponding to a color masterbatch A according to the types of the required color masterbatches, taking more than half V1 of the required volume V of the color masterbatch A and weighing the more than half volume V1 to get a weight M1;
• obtaining a weight M2 by subtracting the M1 from the required weight M of the color masterbatch, converting the M2 into a volume V2 according to the specific gravity of the color masterbatch measured in step (2), and taking the color masterbatch A with the volume V2 to complete reclamation of the color masterbatch A by a reclamation mechanism of the automobile refinish color mixer;
• and
• (5) sequentially finding out color masterbatch buckets corresponding to other color masterbatches according to the required color masterbatch types, and sequentially completing the reclamation of other color masterbatches according to the method in step (4);
• mixing and stirring the reclaimed color masterbatches in a mixing cup,
• wherein a criterion for more than half V1 of the required volume V of the color masterbatch A is that a maximum mass of V1 calculated according to a range of the specific gravity of the color masterbatch A is less than the required weight M of the color masterbatch.