EP 3517267 B1 20220803 - METHOD AND DEVICE FOR CONTROLLING THE AMOUNT OF ENAMEL APPLIED ONTO CERAMIC TILES OR SLABS
Title (en)
METHOD AND DEVICE FOR CONTROLLING THE AMOUNT OF ENAMEL APPLIED ONTO CERAMIC TILES OR SLABS
Title (de)
VERFAHREN UND VORRICHTUNG ZUM STEUERN DER AUF KERAMISCHE FLIESEN ODER PLATTEN AUFGEBRACHTEN GLASURMENGE
Title (fr)
PROCEDE ET SYSTEME POUR REGLER LA QUANTITE D'EMAIL APPLIQUE SUR DES CARREAUX OU DES DALLES CERAMIQUES
Publication
Application
Priority
IT 201800001969 A 20180126
Abstract (en)
[origin: EP3517267A1] The method allows to control and keep within a desired margin of tolerance the weight of enamel applied per unit of surface on ceramic tiles or slabs (3), as well as its distribution on the same, in a decoration station (2), constantly checking the patterns (V) delivered by the spray nozzles (5), which have a progressive wear, and includes the following operational steps: periodic acquisition of at least one image of each spray pattern (V); evaluation of the nrightness of the image, in comparison with predetermined reference values, the difference between said measured brightness value and said reference values allowing the identification of a variations in density of the product emitted by said nozzle (5) and, as a result, of the weight of product deposited per unit area.When the first preset threshold value is exceeded, at least one compensation action is activated, consisting of an increase in the flow rate of the pump (P) that supplies the nozzles (5) and/or an increase in the speed of advancement of the ceramic tiles or slabs (3); beyond a second threshold, the entire station is stopped for replacement of the nozzles (5).
IPC 8 full level
B28B 11/00 (2006.01); B05B 12/08 (2006.01); B05B 13/04 (2006.01); B28B 11/04 (2006.01); B28B 17/00 (2006.01)
CPC (source: EP)
B05B 12/082 (2013.01); B05B 13/0473 (2013.01); B28B 11/001 (2013.01); B28B 11/044 (2013.01); B28B 11/048 (2013.01); B28B 17/0081 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3517267 A1 20190731; EP 3517267 B1 20220803; ES 2929177 T3 20221125; IT 201800001969 A1 20190726
DOCDB simple family (application)
EP 19153852 A 20190126; ES 19153852 T 20190126; IT 201800001969 A 20180126