Dosage control in the manufacture of tires
AssigneeCompagnie Generale Des Etablissements Michelin
InventorsAURELIEN TOURNEBIZE, SEBASTIEN LAFOND, JEAN-CLAUDE SABATIER
Life of this patent
Estimating the term…
Abstract
In the field of tire production, the invention relates to methods and systems for creating unvulcanized rubber batches prior to mixing them in a rubber mixer, including selecting at least one batch for mixing in the mixer, wherein each batch corresponds to a selection of rubber bales (AI, BI, CI) each corresponding to a rubber nature (A, B, C) having predefined characteristics, in order to obtain a proportion corresponding to a predetermined proportion, a target weight to attain a difference between (a) the required weight of the batch and (b) the sum of the weight of the bales (AI, BI, CI) and the weight of the pieces (AIJ, BIJ, CIJ).
Claims21
A method for creating batches of unvulcanized rubber before mixture in a rubber mixer, including selecting at least one batch for mixing in the mixer, wherein each batch corresponds to a selection of uncured rubber bales (AI, BI, CI) that each corresponds to a nature of rubber composition having predetermined characteristics, comprising the steps of:
- providing a supply station where uncured rubber bales (AI, BI, CI) are supplied from the corresponding rubber natures (A, B, C);
- selecting uncured rubber bales (AI, BI, CI) from natures (A, B, C) and in a predetermined proportion corresponding to a selected batch at the supply station;
- providing a cutting station for cutting at least one uncured rubber bale (AI, BI, CI) into pieces (AIJ, BIJ, CIJ);
- providing a transport system that feeds the cutting station and transfers the uncured rubber bales (AI, BI, CI) and the rubber pieces (AIJ, BIJ, CIJ) to at least one mixer;
- weighing the uncured rubber bales (AI, BI, CI) and the pieces (AIJ, BIJ, CIJ) to obtain a sum of a weight of the uncured rubber bales (AI, BI, CI) and a weight of the pieces (AIJ, BIJ, CIJ);
- comparing the sum obtained with a required weight of the selected batch, which is created by mixing different kinds and different grades of elastomers;
- and
- obtaining, in a proportion corresponding to the predetermined proportion, a target weight to attain a difference between the sum obtained and the required weight of the selected batch.
A system (10, 100) for creating unvulcanized rubber batches prior to mixing them in a rubber mixer, including a selection of at least one batch for mixing in the mixer, wherein each batch corresponds to a selection of uncured rubber bales (AI, BI, CI), each corresponding to a rubber nature (A, B, C) having predefined characteristics, the system comprising:
- a bale supply station where uncured rubber bales (AI, B1, CI) are provided from the corresponding rubber natures;
- a cutting station that cuts at least one bale (AI, BI, CI) into pieces (AIJ, BIJ, CIJ);
- a weighing station for weighing the uncured rubber bales (AI, BI, CI) and the pieces (AIJ, BIJ, CIJ) removed therefrom;
- and
- a transport system that transfers the uncured rubber bales (AI, BI, CI) and the rubber pieces (AIJ, BIJ, CIJ) to at least one mixer and transports the uncured rubber bales (AI, BI, CI) and the pieces (AIJ, BIJ, CIJ) between the supply station, the cutting station and the mixer according to a sequence determined by attaining an equivalence between a sum of a bale weight (AI, BI, CI) and a weight of the pieces (AIJ, BIJ, CIJ) and the required weight of the batch in a proportion corresponding to a predetermined proportion.
Dependencies are inferred from the claim text.