Contact lens manufacture

G - Physics – 05 – B

Patent

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Details

G05B 19/12 (2006.01) B29D 11/00 (2006.01) B65B 25/00 (2006.01) G05B 19/418 (2006.01)

Patent

CA 2549896

A method for controlling a production line for the manufacture and/or packaging of contact lenses which production line simultaneously processes at least two lots, the method comprising dividing at least a portion of the production line into a series of cells through which the contact lens pass sequentially, and providing a control system comprising at least three shift registers each containing information about each of said cells, including: (a) a location shift register which indicates whether a cell should be empty or occupied; (b) a lot data shift register which is a non-binary shift register and contains manufacturing and/or prescription data about the contact lens which should be in the cell and (c) a condition shift register which provides an indication of the condition of the product in the cell, and simultaneously indexing all of said shift registers as a lens passes down the production line from one cell to the next cell.

L'invention concerne un procédé permettant de contrôler une chaîne de production et/ou d'emballage de lentilles de contact, par traitement simultané de deux chargements. Ce procédé consiste à diviser au moins une partie de la chaîne de production en une série de cellules à travers lesquelles la lentille de contact passe de manière séquentielle, et à fournir un système de contrôle comprenant au moins trois registres à décalage contenant chacun des informations sur chacune des cellules, comprenant : (a) un registre à décalage d'emplacement qui indique si une cellule doit être vidée ou occupée, (b) un registre à décalage de données de chargement qui est un registre à décalage non-binaire et contient des données de fabrication et/ou de prescription sur la lentille de contact qui devrait être dans la cellule et, (c) un registre à décalage de condition qui fournit une indication sur la condition du produit dans la cellule, et indexe simultanément tous les registres à décalage pendant que la lentille passe le long de la chaîne de production d'une cellule vers la cellule suivante.

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