SYSTEM FOR EXTRUDING CEMENTITIOUS MATERIAL BEADS FOR AN ARCHITECTURAL STRUCTURE ADDITIVE MANUFACTURING ROBOT

• Main Authors: MALLET, Alban, BLANCHET, Laurent, DUBALLET, Romain, AKHAVAN ZAKERI, Mahriz, GOSSELIN, Clément, ROUX, Philippe, MOREL, Philippe, BOUYSSOU, Charles, GAUDILLIERE, Nadja
• Format: Patent
• Language: English; French
• Published: 20.12.2018
• Subjects: ADDITIVE MANUFACTURING TECHNOLOGY; ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING; BUILDING; BUILDING IMPLEMENTS OR OTHER BUILDING AIDS, OR THEIRUSE; FIXED CONSTRUCTIONS; FORMS; HANDLING BUILDING MATERIALS ON THE SITE; MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL,e.g. PLASTER; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTINGBUILDINGS; SCAFFOLDING; SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER; SHUTTERING; TRANSPORTING; WORKING CEMENT, CLAY, OR STONE

The invention relates to a system for extruding cementitious material beads for a robot used for the additive manufacturing of architectural structures, comprising: a head for depositing beads of cementitious material, referred to as printhead (30), comprising an inlet mouth (31) and an outlet nozzle (34) configured to form beads of cementitious material; a feed circuit (20) for said printhead (30), comprising a reservoir (10) for storing cementitious material, a feed conduit (21) connecting said storage reservoir (10) to said printhead (30), and a booster pump (22) for said feed conduit (21), characterised in that it further comprises a sensor (33) for sensing the presure/flow rate of the cementitious material flowing in said printhead (30), and suitable for transmitting pressure/flow rate measurements to said booster pump (22), and in that the booster pump (22) is configured to control the boosting of the feed conduit (21) on the basis of the measurements transmitted by the sensor (33). L'invention concerne un système d'extrusion de cordons de matériau cimentaire pour robot de fabrication additive de structures architecturales comprenant : une tête de dépose de cordons de matériau cimentaire, dite tête d'impression (30), comprenant une bouche d'entrée (31) et une buse de sortie (34) configurée pour former des cordons de matériau cimentaire; un circuit d'alimentation (20) de ladite tête d'impression (30) comprenant un réservoir de stockage (10) de matériau cimentaire, une conduite (21) d'alimentation reliant ledit réservoir de stockage (10) et ladite tête d'impression (30), et une pompe de gavage (22) de ladite conduite (21) d'alimentation, caractérisé en ce qu'il comprend en outre un capteur (33) de pression/débit dudit matériau cimentaire circulant dans ladite tête d'impression (30) adapté pour transmettre des mesures de pression/débit à ladite pompe de gavage (22), et en ce que ladite pompe de gavage (22) est configurée pour asservir le gavage de la conduite (21) d'alimentation auxdites mesures transmises par ledit capteur (33).