Leather hides are imparted different colours based on customer requirements. This colour has a standard formula of making, with definite proportion of various chemicals mixed in sequence. These chemicals are in liquid form, having different viscosities. The chemicals are mixed together in a rotating drum to form a colour which is then sprayed on the leather hides using a spray gun. Each leather hide requires 5- 6 layers of different chemical mixes coated using spray gun at different intervals, each coat having different formula and proportion. Currently in this process, the operator collects the chemicals from the store room, weighs and feeds them into the rotating drum as per the recipe, defined in the SAP system.
This whole task of collecting, weighing and feeding the chemicals to the rotating drum is done manually. Therefore, it is quite inefficient and prone to errors. The operator may either miss out a chemical or use incorrect quantities of the chemical or may not follow a specific order. All this can lead to incorrect colour being imparted to the leather, which will not be known until the first batch of leather hide is coloured. Therefore, we need an automated process of colour making. This automated process should fulfil the following requirements: