Patent ID: 9126817
Filing Date: 2015-09-08
Classification: B05B,B67D

Abstract:
1. A paint replenishing apparatus for a cartridge comprising: a cartridge for storing paint to be supplied to a coating apparatus, including a tank, a feed tube whose proximal end side is mounted on said tank and whose fore distal end side extends in an axial direction from said tank, a partition wall provided movably in said tank and that partitions an interior of said tank into a paint chamber into which paint is replenished and an extruding liquid chamber to and from which an extruding liquid is supplied and discharged, and a trigger valve for opening and closing a paint supply passage in said feed tube at a fore distal end portion of said feed tube; a cartridge support member in which a feed tube insertion hole for insertion of said feed tube therethrough is provided so as to extend in the axial direction, and in which a tank support portion for supporting said tank of said cartridge is provided on a side of an insertion port of said feed tube insertion hole; a color change valve device provided connected to said cartridge support member, and which supplies a paint selected from among paints of a plurality of colors into said paint chamber of said cartridge and said paint supply passage of said feed tube at a time of replenishment of paint, and supplies a wash fluid into said paint supply passage of said feed tube through said paint chamber at a time of washing off of remaining paint; an extruding liquid supply and discharge device provided connected to said cartridge support member, and which supplies the extruding liquid toward said extruding liquid chamber of said cartridge at the time of said washing and discharges the extruding liquid from said extruding liquid chamber at the time of the replenishment of paint; a waste liquid passage having one end side provided in communication with said feed tube insertion hole by being located on a bottom side of said feed tube insertion hole of said cartridge support member and another end side communicating with a waste liquid tank; a waste liquid passage on-off valve provided in said waste liquid passage to open and close said waste liquid passage; a wash fluid supply device connected to said waste liquid passage and located on an outlet side of said waste liquid passage on-off valve and that supplies a wash fluid for washing clean said waste liquid passage; and a waste liquid adjusting valve provided in said waste liquid passage by being located on a downstream side of said waste liquid passage on-off valve; wherein said waste liquid adjusting valve includes a throttle passage, and wherein said waste liquid adjusting valve is configured to widely enlarge a passage cross-sectional area of said waste liquid passage at the time of washing clean said paint chamber and said paint supply passage of said feed tube, and is configured to narrowly throttle the passage cross-sectional area of said waste liquid passage at the time of replenishing paint into said paint supply passage of said feed tube to allow paint to flow into said waste liquid passage by said throttle passage.