WO1999024172A1 - Appareil et procede d'application de revetement automatique - Google Patents
Appareil et procede d'application de revetement automatique Download PDFInfo
- Publication number
- WO1999024172A1 WO1999024172A1 PCT/JP1998/005053 JP9805053W WO9924172A1 WO 1999024172 A1 WO1999024172 A1 WO 1999024172A1 JP 9805053 W JP9805053 W JP 9805053W WO 9924172 A1 WO9924172 A1 WO 9924172A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- atomizing head
- cleaning
- paint
- coating
- machine
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
- B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
- B05B3/10—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces
- B05B3/1064—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces the liquid or other fluent material to be sprayed being axially supplied to the rotating member through a hollow rotating shaft
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
- B05B13/0431—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with spray heads moved by robots or articulated arms, e.g. for applying liquid or other fluent material to 3D-surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
- B05B15/55—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids
- B05B15/555—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids discharged by cleaning nozzles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
- B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
- B05B3/10—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces
- B05B3/1007—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces characterised by the rotating member
- B05B3/1014—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces characterised by the rotating member with a spraying edge, e.g. like a cup or a bell
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
- B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
- B05B3/10—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces
- B05B3/1092—Means for supplying shaping gas
Definitions
- the present invention relates to an automatic coating method and an automatic coating apparatus having a coating machine suitable for coating an object to be coated such as an automobile body while changing colors.
- an automatic coating apparatus includes a coating work machine provided in a coating area such as a painting booth, and a high-speed rotation by an air motor attached to the coating work machine. And a rotary atomizing head for spraying the atomized paint to spray the atomized paint.
- a coating machine used in this coating apparatus has an air motor provided in a housing and a cylindrical shape which is inserted in an axial direction of the air motor and is rotated at a high speed by the air motor.
- a feed tube having a structure described in Japanese Utility Model Laid-Open Publication No. 2-37776-6 is known.
- This feed tube is formed in a double cylindrical shape, and the inside of the inner tube is used as a passage for paint, and the space between the inner tube and the outer tube is used as a passage for a tip cleaning cleaner.
- the paint passage is connected to the color change valve device by paint piping, and the washing Piping J is connected to the tip cleaning thinner source. Then, the paint adhered to the outer circumference of the tip of the feed tube is washed by discharging the thinner from the passage for the washing of the tip of the feed tube.
- a drain passage is connected to a connection portion of the feed tube between the paint passage and the paint pipe through a waste liquid valve formed of a three-way valve, and the drain passage is drained through the drain valve. Connected to tank.
- this painting machine is attached to a painting work machine such as a painting robot or a reciprocating rocket. It moves with a predetermined distance away from. At this time, the paint is applied to the object (vehicle, etc.) by spraying the paint from the painter.
- a painting work machine such as a painting robot or a reciprocating rocket.
- the coating machine rotates the rotary atomizing head at a high speed by the air motor while moving with respect to the object to be coated by the coating work machine.
- the paint that has flowed out of the color changing valve device is supplied to the rotary atomizing head via the paint passage of the feed tube.
- the paint supplied to the rotary atomizing head is atomized from the paint discharge edge by the high-speed rotation of the rotary atomizing head.
- the paint sprayed from the paint discharge edge becomes charged paint, and the paint sprayed between the ground side and the workpiece connected to the ground side. It flies along the formed electrostatic field and is applied to the object.
- the coating device can automatically coat the object to be coated by controlling the coating machine and the coating work machine.
- the drain valve is first opened, Provide a passage to the paint piping, drain passage, and waste tank. In this state, alternately supply thinner and air from the color change valve device to clean the paint piping.
- a thinner is supplied from a color changing valve device. This thinner flows to the rotary atomizing head via paint pipes and feed tubes, and is used to clean the paint passages and the rotary atomizing head. Is performed.
- the filter is cleaned.
- Supply thinner to the outer circumference of the tip of the tube As a result, the outer peripheral side of the tip of the feed tube is spot-washed. After that, the next color paint is supplied from the color change valve device into the paint passage of the feed tube, and the painting machine prepares for the next color painting work.
- the coating machine disclosed in Japanese Utility Model Laid-Open Publication No. 2-3 776 6 discloses a paint pipe and a rotary atomizing head between a color changing valve device and a rotary atomizing head during a color changing operation.
- it is necessary to clean the outer periphery of the tip of the feed tube which not only takes time, but also requires a lot of cleaning fluid such as thinner to reduce running cost.
- This coating machine is a bundled feeder that supplies the paint for each color individually to the rotary atomizing head from each paint supply source via paint pipes, paint valves, paint feed tubes, etc.
- This is a tube type coating machine.
- the bundled feed tube type coating machine is composed of: _ Each feed tube is divided into a plurality of paint tubes for each color and one cleaning feed tube. The cleaning feed tube is connected to a thinner source via a thinner pipe to which a cleaning valve is connected in the middle.
- the paint tubes for each color constituting the bundled feed tubes are supplied to the paint supply sources with different paint colors via paint pipes connected to paint valves on the way. It is connected. Then, when the paint is supplied to the rotary atomizing head via one paint feed tube among the bundled feed tubes, the paint is supplied to the rotary atomizing head. It is released as atomized paint by high-speed rotation of. Here, the paint discharged from the rotary atomizing head is charged by the rotary atomizing head to which a high voltage is supplied, and the charged paint is applied to the workpiece connected to the earth side. You.
- the cleaning fluid such as a thinner is supplied to the rotary atomizing head from the cleaning feed tube, and the cleaning fluid adheres to the rotary atomizing head. Wash the pre-color paint.
- the feed tube is formed in a double cylindrical shape, and the feed tube is used for cleaning the feed tube.
- the passage must be connected to the tip cleaning thinner source via thinner piping separately from the color change valve device, and there is a problem that the structure of the coating machine becomes complicated.
- a passage for a cleaning thinner (a cleaning feed tube) is provided in the coating machine, so that a high voltage is applied to the cleaning system when a high voltage is applied.
- a high voltage is applied to the cleaning system when a high voltage is applied.
- the thinner used for cleaning needs to maintain a certain electrical resistance value or more, it cannot be selected in consideration of only the cleaning property, so that it consumes a large amount of thinner or has low cost.
- the thinner of the store cannot be used. Disclosure of the invention
- the present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to provide an automatic coating method and an automatic coating apparatus capable of performing atomization head cleaning from the front side of a rotary atomization head. May be provided.
- an automatic coating method adopted by the present invention includes a coating work machine provided in a coating area, and a high-speed rotation by an air motor attached to the coating work machine.
- the coating machine has a rotary atomizing head for atomizing the coating material, and the coating work machine moves the coating machine relatively to the object to be coated.
- Spray paint from machine This is an automatic painting method in which the painting work is performed by fogging.After the painting work by the painting machine and the painting machine is stopped, the front surface of the rotary atomizing head and the cleaning fluid are removed. There is an atomizing head cleaning step of cleaning the rotary atomizing head by bringing the cleaning nozzle to be relatively close to the supplied cleaning nozzle.
- the cleaning nozzle is brought close to the front of the rotary atomizing head, and the cleaning fluid is supplied from the cleaning nozzle to the rotating rotary atomizing head.
- the automatic coating apparatus employed in the present invention is a coating work machine provided in a coating area, and is attached to the coating work machine and atomizes the paint by being rotated at a high speed by an air motor.
- a coating machine having a rotary atomizing head, and a cleaning machine for an atomizing head having a cleaning nozzle for supplying a cleaning fluid to a front surface of the rotary atomizing head in the vicinity of the coating working machine; It is provided so as to be relatively close to and away from the rotary atomizing head.
- the atomizing head washer is relatively separated from the rotary atomizing head, and the atomizing head washer is positioned so as not to obstruct the coating. .
- the atomizing head washer is brought relatively close to the rotary atomizing head, and cleaning fluid is supplied from the cleaning nozzle toward the rotary atomizing head.
- the cleaning fluid supplied from the cleaning nozzle can clean the rotary atomizing head.
- the present invention provides a rotary atomizing head of a coating machine, a bell-shaped or cylindrical-shaped atomizing head main body, and a solvent outlet hole provided at the front side of the atomizing head main body. And a hub member having a paint outflow hole for flowing out paint in the peripheral portion.
- the cleaning nozzle has a configuration in which the cleaning fluid flows into the solvent outlet of the hub member of the rotary atomizing head from the front surface of the hub member and flows out of the paint outlet.
- the cleaning fluid is supplied from the cleaning nozzle toward the rotating rotary atomizing head.
- the cleaning fluid flows into the rotary atomizing head from the solvent outlet at the center of the hub member, which is not subjected to the centrifugal force of the rotary atomizing head, and the centrifugal force causes the paint outlet at the peripheral portion of the hub member. Spill out of.
- the cleaning fluid flowing in the rotary atomizing head cleans the paint adhered in the rotary atomizing head.
- the atomizing head washer is provided separately from the coating machine. This keeps the atomizing head washer out of the way when the sprayer is performing the painting operation.
- move the atomizing head washer to the specified position bring the rotary atomizing head close to the cleaning nozzle, and wash the nozzle supplied from the cleaning nozzle toward the rotary atomizing head. Clean the rotary atomizing head with fluid.
- the atomizing head washer is provided by a waste liquid collecting container provided in the coating area for collecting waste liquid, and the cleaning nozzle provided in the waste liquid collecting container.
- the cleaning nozzle may be connected to a cleaning fluid source that supplies a cleaning fluid, and the waste liquid collecting container may be connected to a waste liquid tank.
- the rotary atomizing head of the coating machine is inserted into the waste liquid collecting container of the atomizing head washer.
- the rotary atomizing head is cleaned by the cleaning fluid.
- the body is collected in a waste liquid collection container and flows out to a waste liquid dunk. Further, since the cleaning fluid is collected in the waste liquid collecting container, the cleaning fluid can be prevented from being scattered to the outside, and the inside of the coating area where the coating machine is disposed is kept clean. Is out.
- the atomizing head washer is integrally attached to the painting work machine.
- the atomizing head washer does not become an obstacle when the coating machine performs the painting operation.
- the rotary atomizing head and the cleaning machine for the atomizing head are brought close to each other, and the cleaning fluid flows from the cleaning nozzle toward the rotary atomizing head. Supply and clean the rotary atomizing head.
- the cleaning device for atomizing head is provided in the coating area in the vicinity of the coating work machine and provided in the coating area for collecting a waste liquid;
- the cleaning nozzle may be connected to a cleaning fluid source that supplies a cleaning fluid, and the waste liquid collecting container may be connected to a waste tank.
- the rotary atomizing head of the coating machine is replaced with the waste liquid of the cleaning head for the atomizing head. Insert into collection container.
- the rotating atomization head is cleaned by the cleaning fluid by supplying the cleaning fluid from the cleaning fluid source toward the cleaning nozzle.
- the washing fluid after cleaning the rotary atomizing head is collected in the waste liquid collection container and flows out to the waste liquid tank, so that the washing fluid can be prevented from being scattered outside, and a coating work machine is provided. It is possible to keep the inside of the painted area clean.
- the waste liquid collecting container may be provided so as to be able to approach and separate from the coating work machine. This makes it possible to bring the waste liquid collecting container close to the painting machine when cleaning the rotary atomizing head, and to separate the waste liquid collecting container from the painting machine when the painting machine performs the painting operation.
- FIG. 1 is a front view showing the automatic coating apparatus according to the first embodiment.
- FIG. 2 is a plan view showing an arrangement relationship between the automatic coating apparatus and the conveyor according to the first embodiment.
- FIG. 3 is an enlarged sectional view of a main part showing a rotary atomizing head portion of a coating machine attached to a coating robot.
- FIG. 4 is an explanatory diagram showing a state in which the cleaning fluid supplied from the cleaning nozzle flows through the rotary atomization head.
- FIG. 5 is a front view showing the automatic coating apparatus according to the second embodiment.
- FIG. 6 is a front view showing an automatic coating apparatus according to the third embodiment. BEST MODE FOR CARRYING OUT THE INVENTION
- Reference numeral 1 denotes a painting robot, and the painting robot 1 is used as a painting work machine applied to the automatic painting apparatus according to the present embodiment.
- the painting robot 1 is composed of a base 2 installed on the side of a conveyor A located in a painting area such as a painting booth, and a base 2 for the painting.
- a swivel 3 provided so as to be capable of swinging, a column 4 swingably mounted on the swivel 3 and swinging in the front-rear direction, and a joint 5 positioned on the upper end side of the column 4.
- the arm 6 is roughly constituted by an arm 6 which is movably supported and pivots upward and downward, and a wrist 7 which is positioned at the tip of the arm 6 and has a plurality of degrees of freedom. Further, a coating machine 20, which will be described later, is detachably attached to the wrist part 7 by a support part 8.
- the coating robot 1 thus configured moves the coating machine 20 leftward, rightward, upward, downward, forward and rearward with respect to the body B to be coated. As a result, the coating machine 20 moves while being separated from the surface of the vehicle body B by a predetermined distance.
- Reference numeral 9 denotes a pipe connected to each passage of the coating machine 20 and a color changing valve device (not shown) located outside.
- Reference numeral 10 denotes a fixed-type atomizing head cleaning machine used in the present embodiment.
- the atomizing head cleaning machine 10 is located near the coating robot 1 and is a coating area.
- a base 11 fixedly provided in the base, a column 12 erected on the base 11, a waste liquid collecting container 13 provided on the column 12,
- the cleaning nozzle 14 is attached to the waste liquid collecting container 13 and has a tip generally formed from a cleaning nozzle 14 projecting from the bottom center of the waste liquid collecting container 13.
- the waste liquid collection container 13 is formed in a cup shape with an open upper side, and a bottom surface is formed in a mountain-shaped cross section. Further, as shown in FIG.
- the atomizing head washer 10 is disposed in a coating area that does not hinder the painting work, for example, on the side of the conveyor A.
- the cleaning nozzle 14 supplies the thinner toward the center of the rotary atomizing head 28 described later. As a result, the cleaning nozzle 14 Is discharged from the rotary atomizing head 28 without receiving the centrifugal force of the rotary atomizing head 28.
- Reference numeral 15 denotes a thinner pipe for supplying a cleaning fluid to the cleaning nozzle 14.
- the base end of the thinner pipe 15 is connected to the thinner tank 16, and the tip is the cleaning nozzle 14. It is connected to the .
- a thinner pump 17 composed of, for example, a gear pump, a pruner pump, etc. is connected to the sinner tank 16 side of the thinner pipe 15. By driving the pump for cleaning 17, the thinner (cleaning fluid) stored in the tank for cleaning 16 is discharged from the tip of the cleaning nozzle 14.
- Reference numeral 18 denotes a waste liquid pipe. One end of the waste liquid pipe 18 is connected to the lowermost portion of the bottom surface of the waste liquid recovery container 13, and the other end is connected to the waste liquid tank 19.
- the waste liquid piping 18 is for discharging waste liquid such as paint and thinner collected in the waste liquid recovery container 13 to the waste liquid tank 19.
- Reference numeral 20 denotes a coating machine used in the embodiment, and the coating machine 20 is turned upward, downward, left, and right by the support portion 8 of the wrist 7 of the coating robot 1. Mounted movably.
- the coating machine 20 is configured as shown in FIG.
- reference numeral 21 denotes a housing that forms the outer shape of the coating machine 20.
- the housing 21 is formed of an insulating resin material in a cylindrical shape, and is housed in the housing 21.
- a below-described jaw motor 24 and the like are provided, and a shaving air ring 22 is attached to a distal end side.
- the single-piece air ring 22 is formed into a stepped cylindrical shape with the bottom by using the same insulating resin material as the housing 21, and the single-piece air ring 22 is formed.
- a large number of cooling air jets The mouths-22 A, 22 A, ... are arranged in a ring shape, and each of the nozing 21 and the single-wing air ring 22 has a respective shear.
- a shaving air supply passage 23 for supplying shaving air is provided to the shaving air outlet 22A.
- Reference numeral 24 denotes an air motor provided in the nozzle 21.
- the air motor 24 is formed of a conductive metal material in a cylindrical shape, and internally drives a rotary shaft 25 described later. Air turbines, air bearings, etc. (both not shown) are provided. A high voltage is applied to the air motor 24 by a high voltage generator (not shown).
- Reference numeral 25 denotes a rotating shaft, and the rotating shaft 25 is formed of a conductive metal material into a cylindrical shape having a hollow hole 25A.
- the rotating shaft 25 is supported in the air motor 24 so as to be rotatable at high speed while being inserted in the air motor 24 in the axial direction.
- the rotating shaft 25 has a proximal end fitted to an air turbine (not shown) of the air motor 24 and a distal end protruding forward from the air motor 24.
- Reference numeral 26 denotes a feed tube, and the feed tube 26 is provided so as to extend in the hollow direction 25A of the rotating shaft 25 in the axial direction.
- the feed tube 26 is formed by a single tube made of a conductive metal material, and the inside becomes a paint passage 26 A, and the paint passage 26 A is formed.
- A is connected to a color change valve device (neither is shown) via paint piping.
- a valve element 27 of a paint valve (not shown) for discharging and stopping paint or thinner is provided.
- a drain passage is connected to the base end of the feed tube 26, and the drain passage is connected to a waste tank via a drain valve (neither is shown). ) It is connected to the.
- the tip end of the feed tube 26 protrudes from the rotating shaft 25 and extends into the rotary atomizing head 28.
- Reference numeral 28 denotes a bell-shaped rotary atomizing head.
- the rotary atomizing head 28 is located on the front side of the moving air ring 22 and attached to the rotary shaft 25.
- the rotary atomizing head 28 includes an atomizing head main body 29 and a hub member 30.
- the atomization head main body 29 is formed of a bell cap portion 29 A formed in a bell shape and extending toward the distal end side by a conductive metal material, and a rear portion of the hub member 30. And an annular partition wall 29B protruding toward the inside of the bell cap portion 29A at a position closer to the hub member 30, and an annular partition wall 29B at a position forward of the hub member 30.
- the hub member 30 is fitted and attached to the central portion on the inner peripheral side of the bell cap portion 29A.
- the hub member 30 is made of the same conductive metal as the atomizing head body 29. It is formed using materials.
- the hub member 30 is provided with a disk part 3 OA that closes the front surface of the bell cap part 29 A and an erect side on the outer peripheral side of the disk part 3 OA. It is formed from a cylindrical portion 30B fitted to the front surface. Then, at the center of the circular portion 30 A of the hub member 30, feed A plurality of (for example, four) solvent outlet holes 30 C, 30 C,... (Two each are shown) are provided to supply the thinner from the tube 26 toward the front. ing.
- the paint or thinner discharged from the feed tube 26 is atomized at the radially outer position of the disc portion 3 OA of the hub member 30, and the paint thinning surface of the head body 29 is atomized.
- a number of paint outlet holes 30 D, 30 D, ... are drilled to lead to 29 C.
- the rotary atomizing head 28 is formed by fitting the tip end of the rotary shaft 25 into a mounting hole 29 E of the atomizing head main body 29 and screwing the same. Mounted on 25. When the rotary atomizing head 28 is attached to the rotating shaft 25, the tip of the feed tube 26 projects forward from the annular partition wall 29B of the atomizing head main body 29. ing.
- the automatic coating apparatus has the above-described configuration, and its operation will be described below.
- the painting robot 20 is used as a coating object by the painting robot 1.
- the vehicle body B is moved while maintaining a predetermined separation distance with respect to the vehicle body B, and the paint is sprayed from the coating machine 20 in this state, whereby the vehicle body B is painted.
- the coating machine 20 supplies air to the air motor 24 to rotate the rotary atomizing head 28 (rotary shaft 25) at high speed.
- the valve element 27 of the paint valve is opened in this state, the paint supplied from the color changing valve device passes through the paint pipe to the paint passage 26 A of the feed tube 26. It is supplied and discharged toward the rotary atomizing head 28.
- the paint supplied to the rotary atomizing head 28 is discharged as a charged paint from the paint discharge edge 29D.
- the charged paint is sprayed from each of the shaving air outlets 22A. Flying along the electrostatic field formed between the vehicle body B connected to the ground side while forming the spray pattern ' I do.
- the paint line is washed from the color change valve device to the rotary atomizing head 28, the paint passage 26 of the feed tube 26, and the paint passage 26. Cleaning of A and cleaning of the rotary atomizing head 28 must be performed respectively. For this reason, by moving the coating robot 1, the coating machine 20 is moved to a predetermined position indicated by the two-dot chain line in FIG. 1 and the rotary atomizing head 28 is rotated at high speed. In this state, the rotary atomizing head 28 is relatively approached to the tip of the cleaning nozzle 14.
- the atomizing head cleaning step of cleaning the rotary atomizing head 28 will be described.
- the pump 17 for the thinner is operated, and the thinner is rotated from the cleaning nozzle 14 of the head washing machine 10 for the atomizing head. Supply toward the front.
- the thinner supplied from the cleaning nozzle 14 is not affected by the centrifugal force of the rotary atomizing head 28 as shown by the arrow in FIG. Discharges toward the center of the. Due to the centrifugal force of the rotary atomizing head 28, the thinner flows from the surface of the hub member 30, flows in from each solvent outlet hole 30 C, and flows out from each paint outlet hole 30 D. The flow is divided into two flows.
- the thinner flowing on the surface of the hub member 30 flows from the radially inner side to the outer side of the disc portion 30 A of the hub member 30 due to the centrifugal force of the rotary atomizing head 28.
- the paint P, adhered to the surface can be cleaned.
- the thinner flowing on the surface of the hub member 30 and the thinner flowing from each solvent outlet hole 30C and flowing out from each paint outlet hole 30D are separated by each paint outlet hole 30D. Merge and collect in waste liquid collection container 13. Then, the painter 20 operates the paint line and the feeder in such a manner that the collected thinner is stored in the waste tank 19 through the waste pipe 18. After cleaning the tube 26 and the rotary atomizing head 28, the next color paint can be supplied to the feed tube 26 from the color changing valve device to prepare for the next color coating work. it can.
- the tip of the coating machine 20 attached to the coating robot 1 is cleaned by the atomizing head cleaning machine.
- the thinner from the cleaning nozzle 14 into the front of the rotary atomizing head 28 by inserting it into the waste liquid collecting container 13 of No. 10, the rotary atomizing head 28 can be easily cleaned. It can be carried out.
- a paint pipe, a feed tube, and a rotary atomizing head are cleaned using a thinner from a color change valve device.
- the cleaning nozzle 14 of the atomizing head cleaning machine 10 rotates the paint line and the feed tube 26 separately from the cleaning process of the coating line and the feed tube 26. It is designed to clean the atomization head 28.
- the amount of thinner used in the paint line cleaning process can be reduced by cleaning only the paint line and the feed tube 26, and the amount of thinner used for cleaning is reduced. Reduced, la The running cost can be reduced.
- the coating machine 20 is provided with an atomizing head washing machine 10 for cleaning only the rotary atomizing head 28 near the coating robot 1. Therefore, the feed tube 26 can be constituted by one tube. For this reason, as in the prior art described in Japanese Utility Model Application Laid-Open No. 2-377766, a feed tube is formed into a double cylindrical shape composed of a paint passage and a tip cleaning cleaner passage. It is no longer necessary to form them. Further, in the present embodiment, as in the above-described conventional technique, a passage for a tip cleaning thinner of a feed tube, a tip cleaning valve connected to the passage, a thinner pipe, and a thinner source are provided.
- JP-A-6-134354 As described in the above section, using a bundled feed tube type coating machine in which the paint tube for each color is bundled, and applying the bundled feed tube type coating machine Even when it is mounted on a robot for use, the same operation and effect as the coating machine 20 according to the embodiment can be obtained. Even in this case, by eliminating the cleaning feed tube among the multiple feed tubes that compose the bundled feed tube, the tip cleaning valve and tip cleaning sensor can be used. Eliminating the use of a pipe and a thinner for cleaning the tip makes it possible to simplify the configuration of the coating machine.
- the passage for the cleaning end of the tip (washing feed tube) provided in the coating machine can be eliminated, so that high voltage as in the prior art can be eliminated.
- the high voltage is applied to the tip cleaning via the thinner in the tip cleaning thinner passage (cleaning feed tube). It does not flow to the thinner source.
- a thinner used for cleaning can be selected with good cleaning performance without regard to the magnitude of the electric resistance value.
- the amount of thinner used for cleaning the paint line and cleaning the rotary atomizing head 28 can be reduced, thereby reducing costs. .
- the robot for painting 1 automatically inserts the tip of the painting machine 20 into the waste liquid collecting container 13 of the atomizing head washing machine 10.
- the waste liquid such as thinner generated during washing can be collected in the waste tank 19 via the waste liquid collecting container 13 and the waste liquid piping 18, and the thinner and the like can be collected in the paint area. Spattering is prevented and the inside of the painting area can be kept clean.
- the coating machine is mounted on the reciprocating machine serving as a coating work machine, and the cleaning nozzle is mounted on a washing machine separate from the reciprocator. Further, in the present embodiment, the same components as those in the above-described first embodiment are denoted by the same reference numerals, and description thereof will be omitted.
- Reference numeral 31 denotes a side type reciprocator, and the reciprocator 31 is applied as a coating work machine applied to the automatic coating apparatus according to the present embodiment.
- the reciprocator 31 is provided with a fixed casing 32 provided on the side of a conveyor (not shown) which is located in the painting area and on which a workpiece is moved.
- a slide hole 33 formed on the side surface of the fixed casing 32 and extending upward and downward, and a moving arm 34 reciprocating in the slide hole 33 in the direction indicated by the arrow a. It is more roughly configured.
- the first end of the moving arm 3 4 is A coating machine 20 similar to that of the embodiment is detachably mounted.
- the reciprocator 31 paints the side of the vehicle body or the like by moving the movable arm 34 in the direction of the arrow a with respect to the object to be coated.
- the pipe 35 is connected to the coating machine 20 and a color changing valve device (not shown) located outside.
- Reference numeral 36 denotes a movable atomizing head washer used in the present embodiment.
- the atomizing head washer 36 is provided separately from the reciprocator 31 and is provided in a painting area. Are located.
- the atomizing head washer 36 is provided with a moving table 37 provided so as to be movable forward, backward, left, and right in the painting area, and a moving table 37 on the moving table 37.
- the waste liquid recovery container 41 is formed in a bottomed cylindrical shape with an opening on the side surface, and a waste liquid pipe 47 described below is connected to the bottom surface located on the lower side.
- the atomizing head washer 36 is placed out of the way during the painting operation.
- Reference numeral 4 3 denotes a thinner pipe for supplying a cleaning fluid to the cleaning nozzle 42.
- the base end of the thinner pipe 43 is connected to the thinner nozzle 44, and the tip is the cleaning nozzle 42. It is connected to the .
- a thinner pump 45 is connected to the thinner tank 43 side of the thinner pipe 43, and the thinner pump 45 is driven to drive the thinner pump 45.
- Cinna Tank 4 Within 4 The thinner as the stored cleaning fluid is discharged from the tip of the cleaning nozzle '42.
- a pipe winding reel 46 for winding the thinner pipe 43, and the thinner pipe 43 is provided by the reel 46.
- the length of 3 can be expanded and contracted, and the thinner pipe 43 is sent out and taken up in response to the movement of the atomizing head washer 36.
- Reference numeral 47 denotes a waste liquid pipe.
- One end of the waste liquid pipe 47 is connected to the lowermost part of the waste liquid recovery container 41, and the other end is connected to a waste liquid tank 48.
- the waste liquid pipe 47 discharges waste liquid such as paints and thinners collected in the waste liquid recovery container 41 into the waste liquid tank 48.
- a pipe winding reel 49 for winding the waste liquid pipe 47, and the length of the waste liquid pipe 47 is set by the reel 49. The dimensions can be expanded and contracted, and the waste liquid pipe 47 is sent out and taken up in response to the movement of the atomizing head washer 36.
- the coating apparatus according to the second embodiment is configured as described above, and the operation thereof will now be described.
- the charged paint discharged from the rotary atomizing head 28 of the coating machine 20 flies along the electrostatic field formed between the body to be coated connected to the earth side. Then, it is applied to the object.
- the reciprocator 31 moves the coating machine 20 upward and downward (in the direction a) with respect to the vehicle body moving by the conveyor. Side can be painted.
- the moving arm 34 of the reciprocator 31 is stopped at a predetermined position, and the movable atomizing head washer 36 is reciprocated.
- the thinner pipe 43 and the waste pipe 47 are wound around reels 46 and 49, respectively, in the middle. Therefore, it can be sent out and taken up in response to the movement of the atomizing head washer 36.
- the coating machine 20 and the waste liquid collecting container 41 are adjusted. Adjust the height position of Then, the supporting arm 40 is moved in the direction of the arrow b by the arm moving mechanism 39, the waste liquid collecting container 41 is set to the position shown by the two-dot chain line, and the tip of the coating machine 20 is set. Insert into waste liquid container 4 1. At this time, the tip of the cleaning nozzle 42 comes closer to the rotary atomizing head 28 together with the waste liquid recovery container 41.
- the thinner is supplied from the color changing valve device, and the paint line is washed.
- the cleaning nozzle 42 of the atomizing head cleaning machine 36 to supply the thinner from the front side of the rotating rotary atomizing head 28 in a rotating state, the rotary atomizing head 2 is supplied. 8 Wash the paint adhered to.
- the cleaning cleaner passage provided in the feed tube of the conventional coating machine is provided. It can be abolished and the configuration of the coating machine can be simplified.
- the cleaning of the paint line and the cleaning of the rotary atomizing head 28 are performed separately, the amount of cleaning fluid such as a thinner used can be reduced, and The running cost can be reduced.
- the tip of the coating machine 20 attached to the reciprocator 31 is inserted into the waste liquid container 41 of the atomizing head cleaning machine 36 for cleaning. For this reason, waste liquid such as thinner generated during cleaning is collected in the waste liquid collection container 41 and the waste liquid distribution.
- the waste liquid tank 48 can be recovered via the pipe 47, preventing the painter and the like from scattering into the paint area and keeping the paint area clean. it can.
- the coating machine 20 is mounted on the reciprocator 31 and the cleaning nozzle is mounted on the reciprocator 31 so as to be located near the coating machine 20.
- the same components as those in the first and second embodiments described above are denoted by the same reference numerals, and description thereof will be omitted.
- Reference numeral 51 denotes an atomizing head washer used in the present embodiment.
- the atomizing head washer 51 includes a slide hole 3 in which the moving arm 34 of the reciprocator 31 is at a standby position. It is provided at the lowest position of 3.
- the atomizing head washer 51 is moved by the arm moving mechanism 52 fixed to the lowermost side of the fixed casing 32, and the arm moving mechanism 52.
- a support arm 53 whose tip end is bent upward, a waste liquid recovery container 5 formed on the distal end side of the support arm 53 and opened on the side, and a waste liquid attached to the waste liquid recovery container 54 and attached to the waste liquid recovery container 54
- a cleaning nozzle 55 protrudes from the center of the back of the container 54 toward the opening.
- Reference numeral 56 denotes a thinner pipe for supplying a cleaning fluid thinner to the cleaning nozzle 55.
- the thinner pipe 56 has a base end connected to the thinner tank 57 and a distal end connected to the cleaning nozzle 55. It is connected .
- a pump for a thinner 58 is connected to a side of the sinner tank 57 of the thinner pipe 56, and by driving the pump 58 for the thinner, Discharges the stored sinner tank 5 7 from the tip of the cleaning nozzle 5 5
- Numeral 59 denotes a waste liquid pipe.
- One end of the waste liquid pipe 59 is connected to the lowermost part of the waste liquid collecting container 54, and the other end is connected to the waste liquid tank 60.
- the waste liquid pipe 59 is for discharging waste liquid such as paint and thinner collected in the waste liquid collection container 54 to the waste liquid tank 60.
- the rotary atomizing head 28 is moved to the lowermost position by the moving arm 34. And the support arm 53 is moved in the direction of arrow b. As a result, the coating machine 20 and the cleaning nozzle 55 move to the position indicated by the two-dot chain line, and the tip of the cleaning nozzle 55 approaches the rotary atomizing head 28. Then, by using a cleaning nozzle 55 to supply a thinner to the front of the rotating atomizing head 28 in a rotating state, the rotating atomizing head 28 is cleaned. It can be.
- the supply of the paint to the coating machine 20 is performed by the feed tube 26.
- the present invention is not limited to this, and the cartridge is not limited to this.
- the present invention may be applied to a cartridge type coating machine in which a coating is performed by mounting a coating tank. In this case, each time a paint tank of a different color is installed, the rotary atomizing head may be washed.
- the painting robot 1 and the fixed atomizing head washer 10 are combined, and in the second embodiment, the reciprocator 31 and the movable
- a combination of the reciprocator 31 and the movable atomizing head washer 51 provided in the reciprocator 31 is used in the third embodiment.
- the pump 17 (45, 58) for discharging the thinner from the cleaning-nozzle 14 (42, 55) is used as a gear pump or a plunger. The case where it is composed of pumps etc. has been described.
- the present invention is not limited to this. Instead of the gear pump and the pranja pump, the tank is a pressurized tank by compressed air, and the It may be configured to extrude.
- a direct charging type coating machine in which the atomized paint discharged from the rotary atomizing head 28 is charged by the high voltage applied to the rotary atomizing head is exemplified.
- the present invention is not limited to this, and an indirect charging type coating machine in which a corona discharge region is formed in front of a rotary atomizing head by an external electrode and a high voltage is applied to the discharged atomized paint.
- the present invention may be applied to a non-electrostatic rotary atomizing head type coating machine.
- the bell-shaped rotary atomizing head has been described as the rotary atomizing head.
- the present invention is not limited to this, and the present invention can be applied to a cylindrical or powered rotary atomizing head. Of course it is good
- the automatic coating method provides a cleaning nozzle for supplying a cleaning fluid to a front surface of a rotary atomizing head after stopping a coating operation by a coating work machine and a coating machine.
- the cleaning flow supplied from the front side of the rotary atomizing head is performed by performing the atomizing head cleaning process of cleaning the rotary atomizing head by bringing the nozzle closer to the nozzle.
- the automatic coating apparatus is provided with an atomizing head washer having a cleaning nozzle near the coating machine so as to be relatively close to and away from the rotary atomizing head. Since the rotary atomizing head is cleaned by the cleaning fluid supplied from the cleaning nozzle of the atomizing head cleaning machine, the cleaning fluid supplied from the front side flows through the rotary atomizing head. The paint adhering to the inside of the rotary atomizing head can be reliably washed with a small amount of washing fluid flowing. Also, since the mechanism for cleaning the rotary atomizing head does not need to be installed on the painting machine side, the structure on the painting machine side can be simplified.
Landscapes
- Engineering & Computer Science (AREA)
- Robotics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Electrostatic Spraying Apparatus (AREA)
- Spray Control Apparatus (AREA)
- Nozzles (AREA)
- Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/341,127 US6217944B1 (en) | 1997-11-12 | 1998-11-10 | Automatic coating method and apparatus |
CA002276457A CA2276457C (en) | 1997-11-12 | 1998-11-10 | Automatic coating method and automatic coating system |
EP98951760A EP0951945B1 (en) | 1997-11-12 | 1998-11-10 | Automatic coating method and apparatus |
DE69838942T DE69838942T2 (de) | 1997-11-12 | 1998-11-10 | Verfahren und vorrichtung zur automatischen beschichtung |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP32711297 | 1997-11-12 | ||
JP9/327112 | 1997-11-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999024172A1 true WO1999024172A1 (fr) | 1999-05-20 |
Family
ID=18195438
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1998/005053 WO1999024172A1 (fr) | 1997-11-12 | 1998-11-10 | Appareil et procede d'application de revetement automatique |
Country Status (7)
Country | Link |
---|---|
US (1) | US6217944B1 (ja) |
EP (1) | EP0951945B1 (ja) |
KR (1) | KR100323214B1 (ja) |
CA (1) | CA2276457C (ja) |
DE (1) | DE69838942T2 (ja) |
ES (1) | ES2301212T3 (ja) |
WO (1) | WO1999024172A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100681406B1 (ko) | 2005-10-25 | 2007-02-15 | 주식회사 화인코팅 | 도장로봇 |
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US8141797B2 (en) | 2001-01-25 | 2012-03-27 | Durr Systems Inc. | Rotary atomizer for particulate paints |
US6189804B1 (en) * | 1998-03-27 | 2001-02-20 | Behr Systems, Inc. | Rotary atomizer for particulate paints |
US6811094B2 (en) * | 2000-12-20 | 2004-11-02 | Abb K.K. | Rotary atomizing head type coater |
US6877972B2 (en) * | 2001-10-16 | 2005-04-12 | Lear Corporation | Spray urethane tool and system |
DE10163744A1 (de) * | 2001-12-21 | 2003-07-03 | Topack Verpacktech Gmbh | Reinigungseinrichtung und Reinigungsverfahren für Leimauftragdüsen |
ITBO20020161A1 (it) * | 2002-03-28 | 2003-09-29 | Corob Spa | Equipaggiamento di condizionamento per una testa di dispensazione di una macchina dispensatrice di coloranti |
CA2487493A1 (en) | 2003-11-11 | 2005-05-11 | Tyco Healthcare Group Lp | Spray head applicator, dispensing systems, and methods of use |
US20060219807A1 (en) * | 2004-06-03 | 2006-10-05 | Fulkerson Terrence M | Color changer for powder coating system with remote activation |
CN1960809B (zh) * | 2004-06-03 | 2010-10-13 | 诺信公司 | 一种粉末涂料系统 |
NL1028681C2 (nl) * | 2005-04-01 | 2006-10-03 | Lenteq | Schoonmaakinrichting. |
WO2007083677A1 (ja) * | 2006-01-19 | 2007-07-26 | Abb K.K. | 回転霧化頭型塗装装置 |
US20090261494A1 (en) * | 2008-04-17 | 2009-10-22 | Global Ip Holdings, Llc | Automated Method And System For Making Painted Vehicle Body Panel Skins And Vehicle Body Panels, Such As Instrument Panels, Utilizing Same |
EP2135700B1 (en) | 2008-06-18 | 2013-05-22 | Henkel AG & Co. KGaA | Method and apparatus for automated servicing of a welding torch head |
DE102011103117A1 (de) * | 2011-06-01 | 2012-12-06 | Eisenmann Ag | Anlage zum Beschichten, insbesondere Lackieren, von Gegenständen, insbesondere von Fahrzeugkarosserien |
CN105127156A (zh) * | 2014-05-30 | 2015-12-09 | 盛美半导体设备(上海)有限公司 | 涂胶喷嘴自动清洗装置 |
KR101634298B1 (ko) * | 2016-01-20 | 2016-06-30 | 박상은 | 더블 벨컵 |
CN112791917A (zh) * | 2019-11-14 | 2021-05-14 | 广州市华维橡塑制品有限公司 | 一种新型自动涂胶机 |
EP4077934A1 (en) * | 2019-12-18 | 2022-10-26 | Vestas Wind Systems A/S | Coating applicator tool head used with automated device for repairing leading edge damage on wind turbine blade |
CN115301451B (zh) * | 2022-08-10 | 2024-01-30 | 武汉市人防工程专用设备有限责任公司 | 一种人防门加工用清洗喷漆一体式装置及其工作方法 |
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- 1998-11-10 WO PCT/JP1998/005053 patent/WO1999024172A1/ja active IP Right Grant
- 1998-11-10 US US09/341,127 patent/US6217944B1/en not_active Expired - Lifetime
- 1998-11-10 CA CA002276457A patent/CA2276457C/en not_active Expired - Fee Related
- 1998-11-10 ES ES98951760T patent/ES2301212T3/es not_active Expired - Lifetime
- 1998-11-10 KR KR1019997006249A patent/KR100323214B1/ko not_active IP Right Cessation
- 1998-11-10 DE DE69838942T patent/DE69838942T2/de not_active Expired - Lifetime
- 1998-11-10 EP EP98951760A patent/EP0951945B1/en not_active Expired - Lifetime
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Also Published As
Publication number | Publication date |
---|---|
KR20000070030A (ko) | 2000-11-25 |
CA2276457C (en) | 2003-01-28 |
US6217944B1 (en) | 2001-04-17 |
EP0951945A4 (en) | 2004-09-01 |
DE69838942T2 (de) | 2009-01-02 |
DE69838942D1 (de) | 2008-02-14 |
EP0951945B1 (en) | 2008-01-02 |
CA2276457A1 (en) | 1999-05-20 |
KR100323214B1 (ko) | 2002-02-19 |
ES2301212T3 (es) | 2008-06-16 |
EP0951945A1 (en) | 1999-10-27 |
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