公开(公告)号：US20230398566A1

公开(公告)日：2023-12-14

申请号：US18333157

申请日：2023-06-12

Applicant: EXEL INDUSTRIES

Inventor： Cédric LE-STRAT ,  Ilhan TEL

IPC: B05C11/10 ,  B05C5/02 ,  B05B12/00 ,  B05B12/08

CPC classification number: B05C11/1007 ,  B05C5/0279 ,  B05B12/008 ,  B05B12/085 ,  B05B13/0431

Abstract: This installation for application of a coating product comprises a print head equipped with a plurality of nozzles each controlled by a valve supplied by a product source. A product accumulator, installed on a product circulation circuit, comprises a deformable or movable wall delimiting, at least in part, a first chamber of variable volume supplied with coating product and a second variable-volume chamber supplied with gas, under a predetermined pressure equal to a nominal operating pressure of the print head. The first chamber of variable volume is supplied or purged with coating product due to a difference between an instantaneous coating product ejection rate from the print head and a supply rate to the print head from the source. A control unit adjusts an operation setpoint value of the source as a function of the difference between instantaneous ejection flow rate and supply flow rate, to reduce this difference.