In the coating machines according to the invention
, when a coating material such as a paint is previously filled in a coating material by housed in a coating material discharge chamber and an operating fluid is supplied to the outside of the coating material bag, the operating fluid bag is expanded by the liquid pressure and the coating material bag is crushed by which the coating material is discharged under pressure by a predetermined amount and supplied to the atomizing mechanism.
The foregoing object of the invention can be attained by coating machines having a coating material discharging mechanism for discharging a previously filled coating material under pressure to an atomizing mechanism wherein a coating material bag for filling a coating material is housed in a coating material discharging chamber of a predetermined volume, and an inlet/exit port for an operating fluid is disposed for exerting a pressure from the outside of the coating material bag thereby discharging the coating material under pressure.
Coating machines having a coating material discharger configured to discharge a coating material under pressure to an atomizer wherein a coating material bag for filling the coating material is housed in a coating material discharging chamber of a predetermined volume, and an inlet/exit port of an operating fluid is disposed in the material discharging chamber for exerting a pressure from outside of the coating material bag thereby discharging the coating material under pressure; wherein plural coating material bags are provided in the coating material discharging chamber, and switching valves are interposed in coating material discharge flow channels from each of the coating material bags to the atomizer to selectively supply the coating material from one of the coating material bags to the atomizer during entering of the operating fluid.