WO2006103964A1 - Equipement de formation de pellicule - Google Patents

Equipement de formation de pellicule Download PDF

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Publication number
WO2006103964A1
WO2006103964A1 PCT/JP2006/305472 JP2006305472W WO2006103964A1 WO 2006103964 A1 WO2006103964 A1 WO 2006103964A1 JP 2006305472 W JP2006305472 W JP 2006305472W WO 2006103964 A1 WO2006103964 A1 WO 2006103964A1
Authority
WO
WIPO (PCT)
Prior art keywords
coating
spray gun
conveyor
film forming
coating material
Prior art date
Application number
PCT/JP2006/305472
Other languages
English (en)
Inventor
Tohru Takeuchi
Original Assignee
Kansai Paint Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kansai Paint Co., Ltd. filed Critical Kansai Paint Co., Ltd.
Priority to CN2006800104235A priority Critical patent/CN101151102B/zh
Priority to US11/885,441 priority patent/US8056502B2/en
Priority to EP06715700A priority patent/EP1866100B1/fr
Priority to AT06715700T priority patent/ATE517697T1/de
Priority to JP2007531120A priority patent/JP4836955B2/ja
Publication of WO2006103964A1 publication Critical patent/WO2006103964A1/fr

Links

Classifications

    • 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
    • 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
    • B05B13/0447—Installation or apparatus for applying liquid or other fluent material to conveyed separate articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B05B12/12—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to conditions of ambient medium or target, e.g. humidity, temperature position or movement of the target relative to the spray apparatus
    • 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
    • B05B13/0221—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts
    • B05B13/0264—Overhead conveying means, i.e. the object or other work being suspended from the conveying means; Details thereof, e.g. hanging hooks
    • 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
    • B05B13/0405—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 reciprocating or oscillating spray heads
    • B05B13/041—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 reciprocating or oscillating spray heads with spray heads reciprocating along a straight line
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B16/00—Spray booths
    • B05B16/60—Ventilation arrangements specially adapted therefor
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
    • B05B7/0807—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets
    • B05B7/0815—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets with at least one gas jet intersecting a jet constituted by a liquid or a mixture containing a liquid for controlling the shape of the latter

Definitions

  • the present invention relates to film forming equipment.
  • a coating method has been conventionally employed using a spray pattern formed by a coating material sprayed from a spray gun.
  • Layer coating is conducted using film forming equipment comprising an air conditioner, a spray gun, etc., in a manner as shown in, for example, Fig. 7.
  • a spray pattern 153 is formed by spraying a coating material from a spray gun that is fixed in the center of a coating booth 151, and moving an object 152, which is placed beneath the spray gun, by using an object conveyor (not shown) up and down at a predetermined speed, while shifting the object in the direction shown by the arrow S (i.e., from left to right in the figure) at a predetermined distance.
  • the layer coating When layer coating is conducted while fixing the spray gun and moving the object, as described above, the layer coating must be started when the object is at a position apart from the spray pattern and continued until the object has completely passed through the spray pattern. In other words, an unduly large space, i.e., (length of the object x 2 + width of the spray pattern) x (width of the object x 2 + width of the spray pattern), is necessary for coating.
  • the layer coating when the layer coating is conducted while fixing the object and moving the spray gun, the layer coating must be started when the spray pattern is at a position apart from the object and continued until the spray pattern has completely passed through the object.
  • an unduly large space i.e., (length of the object + width of the spray pattern x 2) x (width of the object + width of the spray pattern x 2) , is necessary for coating.
  • extra space should . be provided between the inner surface of the coating booth and the spray pattern in order to prevent the spray pattern from soiling the coating booth, requiring an even larger space.
  • the present invention has been accomplished in order to solve such problems, and provides film forming equipment that can reduce the space necessary for coating. [Means for Solving the Problem]
  • the object of the present invention cah be achieved by film forming equipment comprising an object conveyor for moving an object; a spray gun conveyor for moving a spray gun that sprays a coating material; and a controller for controlling operations of the object conveyor, the spray gun, and the spray gun conveyor, wherein the controller moves the object in a specific direction while spraying a coating material from the spray gun and reciprocates the object so that partial layer coating can be sequentially conducted, and while coating the object, the controller shifts the object and the spray gun while keeping the positions of the object and the spray gun relative to each other constant.
  • the direction in which the object and the spray gun are shifted be opposite to the direction in which the object subjected to partial layer coating moves.
  • the shifts of the object and the spray gun be conducted when the center of spray emitted from the spray gun is positioned substantially in the longitudinal middle of the object in the shifting direction.
  • controller reciprocate the spray gun in a synchronized manner in the direction opposite to the reciprocation direction of the object.
  • the present invention provides film forming equipment that can reduce the space necessary for coating.
  • Fig. 1 shows equipment for forming coating films according to one embodiment of the present invention.
  • Fig. 2 is a sectional view taken along the line X-X in Fig. 1.
  • Fig. 3 shows cross-sectional views of principal parts for explaining movement of the object and the spray gun.
  • Fig. 4 shows cross-sectional views of principal parts for explaining operation of the film forming equipment of another embodiment of the present invention.
  • Fig. 5 is an explanatory drawing showing the path of coating equipment over an object to be coated in an actual coating step.
  • Fig. 6 is an explanatory drawing of a coated film formation profile in an actual coating step.
  • Fig. 7 is a drawing explaining a coating method in which conventional film forming equipment is used.
  • Fig. 8 is a drawing explaining a coating method in which another conventional film forming equipment is used.
  • Fig. 9 is a drawing explaining another coated film formation profile in an actual coating step. [Explanation of numerical symbols]
  • Fig. 1 is a cross-sectional view schematically showing the structure of equipment for forming coating films according to one embodiment of the present invention
  • Fig. 2 is a plan- sectional view taken along the line X-X in Fig. 1.
  • the film forming equipment 1 comprises an air conditioning system 10, piping 15, a coating equipment main body 20, a conveyor storage member 40, and a controller (not shown) .
  • the air conditioning system 10 supplies air whose temperature and humidity is conditioned to the coating equipment main body 20, such that the air conditioning system 10 communicates with the coating equipment main body 20 at the top portions thereof via the piping 15.
  • the coating equipment main body 20 is divided from the top to downward into an air supply chamber 21, a coating booth 22, and an exhaust chamber 23, such that the air supply chamber 21 and the coating booth 22 are partitioned from each other by an air supply filter 24, and the coating booth 22 and the exhaust chamber 23 are partitioned from each other by a dust-collecting filter 25.
  • the air supply chamber 21 comprises a temperature detector and a humidity detector (not shown) for detecting the temperature and humidity of the air supply chamber 21.
  • temperature detectors are temperature sensors such as thermisters and thermocouples.
  • Humidity sensors such as high polymer film humidity sensors, ceramic humidity sensors, and electrolyte humidity sensors can be used as humidity detectors .
  • the coating booth 22 comprises a spray gun 30 which functions as a coating material atomizer.
  • a spray gun conveyor, coating material supplier, air control panel, high-voltage generator, cables, etc. (not shown) are connected to the spray gun 30.
  • the spray gun 30 is structured so that its distance from the object 50 can be varied.
  • Rotational bell-type atomization coating devices may be used as the spray gun 30.
  • a rotational bell-type atomization coating device comprises a bellcup that rotates at high speed on top of a coating gun, and the coating material discharged through the bellcup is atomized by centrifugal force generated by rotation of the bellcup.
  • a rotational bell-type atomization coating device comprises an air nozzle for emitting shaping air that controls the width of the spray pattern of the coating material by regulating the scattering direction of the atomized particles of the coating material which scatter from the peripheral edge of the bellcup in the radially outward direction.
  • An air-atomizing type coating device comprises nozzles around a coating material outlet for jetting out compressed air (atomized air) , and atomizes a coating material by discharging the coating material from the discharge outlet while jetting compressed air from the nozzles.
  • An air-atomizing type coating device usually comprises pattern air nozzles at the periphery of the compressed air nozzles so as to control the width of the spray pattern.
  • the spray gun conveyor (not shown) is a device that moves the spray gun 30 by receiving commands from the controller described later. Air cylinders, biaxial actuators, etc., are examples of spray gun conveyors.
  • An example of a coating material supplier is a syringe pump wherein a coating material is supplied by a microactuator pressing the piston of a syringe filled with a specific amount of coating material.
  • An air control panel controls the air pressure for rotating the bell, the flow rate of shaping air, and other conditions of the rotational bell-type atomization coating device.
  • a high-voltage generator applies atomized particles which have been made into fine particles by an atomizer to an object 50 using static electricity.
  • the exhaust chamber 23 comprises an exhauster (not shown) for discharging the air supplied by the air conditioning system 10.
  • a storage member 40 is disposed adjacent to the coating booth 22, and comprises a conveyor 41 for conveying the object 50.
  • a spacer 44 of specific dimensions is formed beneath a partition 43 that separates the storage member 40 from the coating booth 22.
  • the conveyor 41 comprises a fixing jig 42 for affixing the object 50 in the coating booth 22 via the spacer 44.
  • a uniaxial actuator, biaxial actuator, etc. may be used as the conveyor 41 as long as the conveyor 41 can freely transport the object 50 over one surface in the coating booth 22. In the present embodiment, a biaxial actuator is used as the conveyor 41.
  • the controller is connected to the air conditioning system 10, temperature sensor, humidity sensor, spray gun 30, spray gun conveyor, and object conveyor 41, etc., and controls the operations thereof.
  • a method for forming a coated film on the object 50 using the film forming equipment 1 of the present embodiment is explained below.
  • a predetermined amount of coating material is supplied to the coating material supplier provided with the spray gun 30.
  • An object 50 is then affixed to the conveying jig 42 provided with the conveyor 41 in the coating booth 22.
  • the air conditioning system 10, temperature sensor, humidity sensor, spray gun 30, object conveyor 41, spray gun conveyor, exhauster and controller are operated by turning on the film forming equipment 1.
  • the air conditioning system 10 supplies air to the air supply chamber 21 via piping 15. While feed backing the signals output from the temperature and humidity sensors provided in the air supply chamber 21, the controller regulates the temperature and humidity of the air supplied from the air conditioning system 10 to be substantially constant.
  • the air whose temperature and humidity has been conditioned is fed to the coating booth 22 via an air supply filter 24.
  • a coated film is formed by reciprocating the object 50 while spraying a coating material from the spray gun 30 under conditions wherein the temperature and humidity in the coating booth are regulated, and moving the object 50 in a specific direction so that partial layer coating is conducted sequentially, forming a coated film on the object 50.
  • the methods and operations for controlling the object 50 and the spray gun 30 during forming a coated film are described later.
  • Excess atomized particles of coating material which do not deposit on the object 50 are carried by the air flow supplied from the air conditioning system 10 and sent toward the exhaust chamber 23. In this process, atomized particles of coating material are removed by a dust-collecting filter 25. The air passing through the dust-collecting filter 25 is sent to the exhaust chamber 23, and then discharged via an exhauster.
  • the controller regulates a spray gun (not shown) and the object 50 to be disposed so that the spray pattern 31 sprayed from the spray gun and the object 50 are apart from each other as shown in Fig. 3
  • an object conveyor (not shown) is operated so that the object 50 is moved up and down and shifted in the direction shown by the arrow
  • the controller shifts the object 50 in the direction shown by the arrow S a predetermined distance at completion of each half of the round-trip, thus coating layers onto the object 50.
  • the object 50 and the spray gun are shifted in a predetermined direction while maintaining the specific relative position of the object 50 to the spray gun.
  • the shifting direction is opposite to that (the direction shown by the arrow S) when partial layer coating is sequentially conducted on the object 50. Shifting the object 50 in this direction reduces the space necessary for coating.
  • the timing for shifting is set so that the object 50 is shifted when the center of the spray pattern 31 (corresponding to the center of the spray emitted from the spray gun) is positioned substantially in the longitudinal middle of the object 50, in order to sequentially conduct partial coating in the shifting direction for the object 50 (the direction shown by the arrow S) .
  • the timing for shifting may be when the object 50 is traveling in the direction shown by the arrow S, or the object 50 is reciprocating.
  • the shifting amount of the object 50 and the spray gun is set so that the spray pattern 31 of the coating material emitted from the spray gun does not soil the inner surface of the coating booth.
  • the film forming equipment 1 of the present embodiment is structured so that the object 50 and the spray gun can be shifted during coating of the object 50 while keeping the relative position of the object 50 and the spray gun constant, and therefore it is possible to reduce the space necessary for coating and to prevent misalignment of the layer coating on the object 50.
  • the coating booth 22 can be miniaturized. This reduces the energy necessary for keeping the temperature and humidity in the coating booth 22 constant. Because the temperature and humidity in the coating booth 22 can be kept constant with reduced energy, a compact air conditioner 10 with a low air-conditioning capability can be used. This achieves further miniaturization of the film forming equipment 1 and reduction of the facility's cost. Miniaturization of the coating booth 22 also miniaturizes the film forming equipment 1 as a whole, and therefore this enhances the operational efficiency of installation of the film forming equipment 1, and eases constraints in the places in which the film forming equipment can be installed.
  • the shifting amount of the spray gun is set in a range that the spray pattern 31 of the coating material sprayed from the spray gun does not soil the inner surface 22a of the coating booth 22. Therefore, there is no risk of the coating material adhering to the inner surface 22a, and cleaning or other maintenance steps can be reduced, enhancing the efficiency of the coating process.
  • the controller regulates the object 50 and the spray gun so as to be in positions such that the spray pattern 31 sprayed from the spray gun and the object 50 are apart from each other.
  • an object conveyor (not shown) is operated, the object 50 is shifted in the direction shown by the arrow H, and the spray gun conveyor is operated to shift the spray gun so that the spray pattern 31 is shifted in the direction opposite to the direction as shown by the arrow H (i.e., in the direction as shown by the arrow I) .
  • the operations of the object conveyor and the spray gun are regulated so that when the first half of the round-trip of the object 50 is completed, the first half of the round-trip of the spray gun is also completed, and, as shown in Fig. 4 (b) , the object conveyor and the spray gun are in positions where the coating material in the spray pattern 31 is not applied to the object 50.
  • the object 50 is then shifted in the direction shown by the arrow S a predetermined distance.
  • Fig. 4 (c) the object 50 is moved in a second half of a round-trip, the spray gun is also moved in a second half of a round-trip, and the spray pattern 31 is shifted in the direction shown by the arrow J. Coating proceeds by repeating such operations .
  • a coated film having a uniform thickness can be formed.
  • the object 50 and the spray gun are shifted in the predetermined direction (i.e., in the direction opposite to the arrow S) during coating the object 50, while keeping the relative position of the object 50 to the spray gun constant.
  • the distance between the positions at the start and completion of the reciprocation of the object 50 can be reduced. This further reduces the space necessary for coating in the direction of reciprocation of the object 50.
  • the shifting direction of the object 50 and the spray gun 30 is opposite the direction shown by the arrow S; however, the direction is not limited to this as long as the space necessary for coating can be reduced.
  • shifts of the object 50 and the spray gun 30 are conducted when the center of the spray pattern 31 sprayed from the spray gun 30 is at substantially the longitudinal middle of the object 50 in the direction shown by the arrow S; however, the timing for the shift is not limited to this.
  • the controller controls operations of the object conveyor and the spray gun conveyor so that the object 50 and the spray gun 30 shift once; however, the number of shiftings is not limited to one, and the operations may be such that the object 50 and the spray gun 30 are shifted a plurality of times.
  • the controller controls the operation of the object 50 so that the object 50 is sequentially shifted in the direction shown by the arrow S at the completion of each half of the round-trip of the object 50 as shown in Fig. 3 a predetermined distance.
  • the film forming equipment 1 of the present embodiment it is possible to efficiently form a coated film having substantially the same quality as that coated under the coating conditions of an actual coating step by controlling the particle diameter, concentration and velocity of atomized particles in the spray pattern of coating material sprayed from the spray gun 30, and the relative shift of the spray gun 30 to the object 50.
  • a method for controlling the particle diameter, concentration and velocity of atomized particles in the spray pattern of coating material sprayed from the spray gun 30 is explained below.
  • the atomized, particle diameter is the average particle diameter of the particle swarm of atomized particles of coating material which have been atomized by a spray gun 30 measured at the point of reaching the object 50.
  • the particle diameter can be measured by a laser diffraction particle size analyzer, etc.
  • the atomized particle concentration is the total volume of particles passing through a unit area of the spray pattern.
  • the atomized particle concentration may be taken to be an average atomized particle concentration calculated from the flow rate of the coating material divided by the area of the sprayed pattern.
  • the pattern area can be easily obtained by spraying the spray pattern onto a plate, etc.
  • the atomized particle velocity is an average particle velocity of the particle swarm in the object 50 direction at the points the atomized particles reach the object 50.
  • the atomized particle velocity can be measured by, for example, a laser Doppler velocimeter, etc.
  • the particle diameter can be easily set by suitably selecting the bellcup diameter of the rotational bell-type atomization coating device, the rotational speed of the bell, and flow rate of the coating material, etc., so that the particle diameter is substantially the same as that in the actual coating operation.
  • the rotational speed of the bell can be controlled, for example, by varying the air pressure for rotating the bell of the rotational bell-type atomization coating device 30.
  • the flow rate of the coating material can be controlled by varying the flow rate of the coating material supplier.
  • a rotational bell-type atomization coating device used in an actual coating operation has a bellcup diameter of about 60 mm ⁇ to 70 mm ⁇ , its rotational rate is 20000-30000 rpm, and flow rate is 200 to 300 cirvVmin; however, when a small bellcup is used in the present embodiment, a particle diameter substantially the same as that in the actual coating operation can be obtained at a flow rate as small as about 20 to 30 cmVmin and a rotational rate of about 10000 rpm.
  • the particle diameter can be easily set so as to be substantially the same as that in the actual coating operation by suitably selecting the atomized air flow rate, flow rate of the coating material, etc.
  • the atomized air flow rate can be controlled by reducing the volume of discharged air, etc.
  • the atomized particle concentration can be easily calculated based on the flow rate of the coating material relative to the pattern area formed on the object 50 by the spray pattern sprayed from the spray gun 30. Therefore, an atomized particle concentration that is substantially the same as that in the actual coating operation can be easily obtained by controlling the flow rate of the coating material.
  • the width of the coating pattern in an actual operation is to be 30 cm and the flow rate is to be 200 cm 3 /min
  • the width of the coating pattern in the present embodiment is set at 10 cm
  • the ratio of pattern area of the present embodiment/the actual operation is 1/9. Therefore, the same atomized particle concentration can be obtained by setting the flow rate at 22.2 cmVmin (200 x (1/9) ) .
  • the width of the spray pattern can be easily changed by controlling the angle of the shaping air emitted from the rotational bell-type atomization coating device, and the flow rate thereof.
  • the atomized particle velocity can be easily made substantially the same as that in the actual coating operation by suitably selecting the flow rate of shaping air of the rotational bell-type atomization coating device, the coating distance, etc.
  • the atomized particle velocity can be easily made substantially the same as that in the actual coating operation.
  • the flow rate of the coating material of the spray gun 30, coating distance, etc. it is possible to make the atomizing conditions of the coating material (particle diameter, concentration, and velocity of the atomized particles) substantially the same as those of the coating material deposited on an object 50 in an actual coating operation.
  • FIG. 5 is an explanatory drawing showing the path of the spray gun 100 over a micro-area portion 103 of an object 101 in an actual coating step.
  • Fig. 6 is an explanatory drawing illustrating the relation between the elapse time and the thickness of the coated film in the micro-area portion 103.
  • the spray gun 100 is attached to a vertical reciprocating member 102, and a coating material is sprayed to the object to be coated.
  • the spray gun 100 passes over the micro-area portion 103 of the coated object 101 seven times, so that a spray pattern is coated seven times, forming a coated film.
  • the floating time (TF) of the atomized particles as the spray gun 100 passes the micro-area portion 103 a single time can be calculated by dividing the passing length of the micro-area portion 103 Ll by the reciprocating speed.
  • the spray gun 100 is also reciprocated in those portions other than the micro-area portion 103.
  • a coated film formation profile as shown in Fig. 6 can be obtained with the horizontal axis indicating coated film formation time and the vertical axis indicating coated film thickness.
  • the thickness of the coated film can be measured by an electro- magnetic coating thickness meter, laser displacement meter, etc.
  • the film thickness is schematically shown by a straight line, but films deposit based on a logistic function in an actual coating operation.
  • the controller regulates the object conveyor 41 so as to produce a coated film formation profile determined by the relationship between changes in the coated film formation time and the thickness of the resulting coated film.
  • the object conveyor 41 is controlled depending on the duration of the object 50' s passings, number of times the object 50 passes, and the interval TI between the completion of one coating pass and the start of the subsequent coating pass in the spray pattern of the coating material sprayed from the spray gun 30 so that these agree with those of the coated film formation profile in an actual coating operation.
  • the object conveyor 41 is controlled so that the atomized particles of coating material do not deposit on the object 50 during the interval TI by having the object 50 stand still in or by moving the object 50 to a region in the coating booth where the atomized particles of coating material do not deposit. This allows the deposition of the atomized particles of the coating material sprayed from the spray gun 30 on the object 50 (film deposition behavior) to be made substantially the same as in an actual coating.
  • the film forming equipment 1 of the present embodiment can reproduce coating conditions in an actual coating operation by controlling the temperature and humidity of the air in the coating booth 22, controlling the particle diameter, concentration, and velocity of atomized particles of a coating material spayed from a spray gun 30, and controlling the deposition behavior of the atomized particles deposited on an object 50 so that they are substantially the same as in an actual coating operation. Therefore, a coated film having a finished quality substantially the same as one obtained in an actual coating operation can be formed.

Landscapes

  • Spray Control Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)

Abstract

La présente invention concerne un équipement de formation de pellicule capable de réduire l'espace nécessaire au revêtement. L'équipement de formation de pellicule est muni d'un convoyeur d'objets destiné à déplacer un objet (50) ; d'un convoyeur de pistolet de pulvérisation (41) destiné à déplacer un pistolet de pulvérisation (30) qui pulvérise un matériau de revêtement ; et d'un dispositif de commande destiné à commander le fonctionnement du convoyeur d'objets (41), du pistolet de pulvérisation (30), et du convoyeur de pistolet de pulvérisation, le dispositif de commande déplaçant l'objet (50) dans une direction spécifique tout en pulvérisant un matériau de revêtement à partir du pistolet de pulvérisation (30) et faisant aller et venir l'objet (50) de telle sorte qu'un revêtement par couches partielles puisse être effectué séquentiellement, et le dispositif de commande décalant l'objet (50) et le pistolet de pulvérisation (30) pendant le revêtement de l'objet (50) tout en gardant constante la position relative de l'objet et du pistolet de pulvérisation.
PCT/JP2006/305472 2005-03-29 2006-03-14 Equipement de formation de pellicule WO2006103964A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN2006800104235A CN101151102B (zh) 2005-03-29 2006-03-14 成膜装置
US11/885,441 US8056502B2 (en) 2005-03-29 2006-03-14 Film forming equipment
EP06715700A EP1866100B1 (fr) 2005-03-29 2006-03-14 Equipement de formation de pellicule
AT06715700T ATE517697T1 (de) 2005-03-29 2006-03-14 Filmbildungseinrichtung
JP2007531120A JP4836955B2 (ja) 2005-03-29 2006-03-14 塗膜形成装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005-093791 2005-03-29
JP2005093791 2005-03-29

Publications (1)

Publication Number Publication Date
WO2006103964A1 true WO2006103964A1 (fr) 2006-10-05

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2006/305472 WO2006103964A1 (fr) 2005-03-29 2006-03-14 Equipement de formation de pellicule

Country Status (5)

Country Link
EP (1) EP1866100B1 (fr)
JP (1) JP4836955B2 (fr)
KR (1) KR100918835B1 (fr)
CN (1) CN101151102B (fr)
WO (1) WO2006103964A1 (fr)

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US20110159197A1 (en) * 2008-08-28 2011-06-30 Tatsuki Kurata Coating method

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KR100918835B1 (ko) * 2005-03-29 2009-09-25 간사이 페인트 가부시키가이샤 도막 형성장치
KR101284866B1 (ko) * 2011-03-11 2013-07-09 삼성중공업 주식회사 도장 장치의 도장 방법
US9149821B2 (en) * 2012-03-07 2015-10-06 Carlisle Fluid Technologies, Inc. Cordless spray device
KR101653465B1 (ko) * 2014-12-12 2016-09-01 (주)탑피온 Ptfe 자동 도포 장치
JP7229708B2 (ja) * 2018-09-21 2023-02-28 関西ペイント株式会社 塗装装置

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JPH0235965A (ja) * 1988-07-22 1990-02-06 Trinity Ind Corp 自動塗装方法
JPH05146725A (ja) * 1991-11-28 1993-06-15 Chemicoat & Co Ltd スプレー式表面処理方法及び装置

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JPH0615053B2 (ja) * 1988-07-29 1994-03-02 マツダ株式会社 塗装装置
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JPH0235965A (ja) * 1988-07-22 1990-02-06 Trinity Ind Corp 自動塗装方法
JPH05146725A (ja) * 1991-11-28 1993-06-15 Chemicoat & Co Ltd スプレー式表面処理方法及び装置

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110159197A1 (en) * 2008-08-28 2011-06-30 Tatsuki Kurata Coating method
US8828496B2 (en) * 2008-08-28 2014-09-09 Nissan Motor Co., Ltd. Coating method

Also Published As

Publication number Publication date
CN101151102B (zh) 2011-03-23
EP1866100A1 (fr) 2007-12-19
JP4836955B2 (ja) 2011-12-14
CN101151102A (zh) 2008-03-26
EP1866100B1 (fr) 2011-07-27
JP2008534242A (ja) 2008-08-28
EP1866100A4 (fr) 2009-07-01
KR100918835B1 (ko) 2009-09-25
KR20070114843A (ko) 2007-12-04

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