US 12,246,338 B2
Apparatus for coating objects with a powder coating and for speeding a color change phase
Luca Tomassoni, Corciano (IT)
Assigned to Siver S.r.l., Frazione Taverne (IT)
Appl. No. 16/766,261
Filed by SIVER S.R.L., Corciano-Frazione Taverne (IT)
PCT Filed Nov. 21, 2018, PCT No. PCT/IB2018/059175
§ 371(c)(1), (2) Date May 21, 2020,
PCT Pub. No. WO2019/102370, PCT Pub. Date May 31, 2019.
Claims priority of application No. 102017000133462 (IT), filed on Nov. 21, 2017.
Prior Publication US 2020/0368767 A1, Nov. 26, 2020
Int. Cl. B05B 7/14 (2006.01); B05B 12/14 (2006.01)
CPC B05B 7/1468 (2013.01) [B05B 7/1404 (2013.01); B05B 12/149 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An apparatus for coating objects, wherein the apparatus comprises:
a first feeding unit provided with a first loading and unloading means of a first coating powder;
a second feeding unit provided with a second loading and unloading means of a second coating powder;
a pump assembly associated with a spraying system for sending said first coating powder and said second coating powder into a coating booth;
a connecting means of said pump assembly to said first feeding unit and to said second feeding unit, variable between:
a first configuration, in which said pump assembly is operatively connected to said first feeding unit for sending said first powder into said coating booth; and
a second configuration, in which said pump assembly is operatively connected to said second feeding unit for sending said second powder into said coating booth,
wherein in said first configuration, said second feeding unit is connected to an external circuit for an unloading of a residual powder, and
wherein in said second configuration, said first feeding unit is connected to said external circuit;
wherein the connecting means comprise a feeding assembly adapted to receive the first coating powder from said first feeding unit and the second coating powder from said second feeding unit, and a connecting assembly connected to said pump assembly and associated with said feeding assembly alternatively:
in the first configuration for receiving said first coating powder to be sent to said pump assembly; and
in the second configuration for receiving said second coating powder to be sent to said pump assembly,
wherein said feeding assembly comprises a first feeding nozzle communicating with said first feeding unit and a second feeding nozzle communicating with said second feeding unit,
wherein said connecting assembly comprises one or more connecting nozzles communicating with said pump assembly, in said first configuration at least one of the one or more connecting nozzles being coupled to said first feeding nozzle and in said second configuration at least one of the one or more connecting nozzles being coupled to said second feeding nozzle,
wherein at least one of the connecting assembly and the feeding assembly is moveable for the switch from the first configuration to the second configuration and vice versa, wherein said connecting assembly comprises one or more outlet nozzles nozzle communicating with said external circuit, in said first configuration at least one of said one or more outlet nozzles being coupled to said second feeding nozzle and in said second configuration at least one of said one or more outlet nozzles being coupled to said first feeding nozzle,
wherein the feeding assembly comprises a base plate on which the feeding nozzles are arranged,
wherein the connecting assembly comprises a placement plate on which the connecting nozzles and the outlet nozzles are arranged, and
wherein at least one of the connecting assembly and the feeding assembly is mounted on a slide sliding along a substantially horizontal direction, such that the connecting means can switch from the first configuration to the second configuration and vice versa.