A coating device includes a rotary head, a power supply part that applies a voltage to the rotary head, and a control part that controls the power supply part. The rotary head is configured so that a coating material is electrostatically atomized. The control part is configured so as to calculate a discharge current based on a total current flowing from the power supply part to the rotary head and a leak current, and control the power supply part based on the discharge current.
B05B 5/053 - Dispositions pour l'alimentation en énergie, p. ex. en énergie pour la charge
B05B 5/04 - Appareillages pour délivrer le matériau, p. ex. pistolets de pulvérisation électrostatique caractérisés en ce qu'ils comportent une sortie rotative ou des éléments déflecteurs
B05B 5/08 - Installations pour appliquer des liquides ou d'autres matériaux fluides à des objets
2.
Electrostatic coater and electrostatic coating method
A charge remaining in an electrostatic coater when power supply to the electrostatic coater is stopped is neutralized at an early stage.
A rotary atomizing head 102 receives a high voltage of negative polarity from a cascade 104. An electrostatic coater 100 further includes a second high-voltage generator 110 that generates a high voltage of positive polarity. The second high-voltage generator 110 is composed of a Cockcroft-Walton circuit. The Cockcroft-Walton circuit is composed of diodes and capacitors. A high voltage of the electrostatic coater 100 is controlled by a controller 10. Immediately after running of the electrostatic coater 100 is stopped by stopping power supply to the cascade 104, power is supplied to the second high-voltage generator 110. The high voltage of positive polarity generated by the second high-voltage generator 110 is supplied to the rotary atomizing head 102 for a predetermined time period.
B05B 14/42 - Aménagements pour collecter, réutiliser ou éliminer le matériau de pulvérisation excédentaire pour une utilisation dans des cabines de pulvérisation en utilisant des moyens électrostatiques
B05B 5/025 - Appareillages pour délivrer le matériau, p. ex. pistolets de pulvérisation électrostatique
B05B 5/053 - Dispositions pour l'alimentation en énergie, p. ex. en énergie pour la charge
B05D 1/04 - Procédés pour appliquer des liquides ou d'autres matériaux fluides aux surfaces réalisés par pulvérisation comportant l'emploi d'un champ électrostatique
B05B 5/04 - Appareillages pour délivrer le matériau, p. ex. pistolets de pulvérisation électrostatique caractérisés en ce qu'ils comportent une sortie rotative ou des éléments déflecteurs
B05B 13/04 - Moyens pour supporter l'ouvrageDisposition ou assemblage des têtes de pulvérisationAdaptation ou disposition des moyens pour entraîner des pièces les têtes de pulvérisation étant déplacées au cours de l'opération
The purpose of the present invention is to achieve both coating efficiency improvement and atomization of coating material. An air spray gun 100 has an air discharge member 8 disposed within a coating material nozzle unit 18. The air discharge member 8 is disposed on the same axis as an axial line Ax for the coating material nozzle unit 18. The air discharge member 8 discharges atomized air from a front end opening 8a. A coating material discharge opening 34 is formed between the coating material nozzle unit 18 and the air discharge member 8. The coating material discharge opening 34 has a ring shape continuing in the circumferential direction, and coating material discharged from the coating material discharge opening 34 has a hollow cylindrical shape. The air spray gun 100 has a first air opening 20 formed by the coating material nozzle unit 18 and an air cap 6, and the first air opening 20 has a ring shape continuing in the circumferential direction. Atomized air is discharged forward from the first air opening 20.
B05B 7/06 - Pistolets pulvérisateursAppareillages pour l'évacuation avec un orifice de sortie en entourant un autre situé approximativement dans le même plan
B05B 7/08 - Pistolets pulvérisateursAppareillages pour l'évacuation avec des orifices de sortie séparés, p. ex. pour former des jets parallèles, pour former des jets croisés
PROBLEM TO BE SOLVED: To evolve a spark discharge preventing effect of an electrostatic coating device.
SOLUTION: One coating robot has an arm equipped with a plurality of electrostatic coating devices 100 close to each other and the plurality of the electrostatic coating devices 100 is connected in parallel with each other to one high-voltage generator 102. A hollow rotary shaft 108 driven by an air motor 104 is disposed with nine plate-shaped resistors 120 arranged circumferentially at intervals. The nine plate-shaped resistors 120 are connected in series and a high voltage is applied via the resistors 120 to a rotary atomization head 110. The rotary atomization head 110 is made of a semiconductive resin.
B05B 5/025 - Appareillages pour délivrer le matériau, p. ex. pistolets de pulvérisation électrostatique
B05C 19/04 - Appareillages spécialement adaptés pour appliquer des matériaux en particules à des surfaces le matériau en particules étant projeté, versé ou répandu sur la surface de l'ouvrage
B05B 5/053 - Dispositions pour l'alimentation en énergie, p. ex. en énergie pour la charge
B05B 5/043 - Appareillages pour délivrer le matériau, p. ex. pistolets de pulvérisation électrostatique utilisant la charge par induction
B05B 5/04 - Appareillages pour délivrer le matériau, p. ex. pistolets de pulvérisation électrostatique caractérisés en ce qu'ils comportent une sortie rotative ou des éléments déflecteurs
To improve actual coating efficiency, the present invention has a coating robot provided with a coating unit configured by a plurality of rotary atomizing type electrostatic coating machines horizontally arranged, and a coating control apparatus that controls the coating unit and the coating robot. A diameter of each of bells is 50 mm or less. The coating material discharge amount of each rotary atomizing type electrostatic coating machine is 400 cc/min or less. A coating distance between each bell and a surface to be coated of a workpiece is controlled between 50 mm to 150 mm. The coating material discharge amounts of the plurality of electrostatic coating machines are controlled for the respective coating machines. The control of the coating material discharge amounts includes a pause of coating material discharge.
B05B 5/04 - Appareillages pour délivrer le matériau, p. ex. pistolets de pulvérisation électrostatique caractérisés en ce qu'ils comportent une sortie rotative ou des éléments déflecteurs
B05D 1/04 - Procédés pour appliquer des liquides ou d'autres matériaux fluides aux surfaces réalisés par pulvérisation comportant l'emploi d'un champ électrostatique
B05B 12/12 - Aménagements de commande de la distributionAménagements de réglage de l’aire de pulvérisation sensibles à l'état du liquide ou d'un autre matériau fluide expulsé, du milieu ambiant ou de la cible sensibles à l'état du milieu ambiant ou de la cible, p. ex. à l'humidité, à la température
B05B 12/04 - Aménagements de commande de la distributionAménagements de réglage de l’aire de pulvérisation pour la commande de la durée ou de la succession des distributions dans le cas d'opérations successives ou de plusieurs orifices de sortie
B05B 12/08 - Aménagements de commande de la distributionAménagements de réglage de l’aire de pulvérisation sensibles à l'état du liquide ou d'un autre matériau fluide expulsé, du milieu ambiant ou de la cible
B05B 5/053 - Dispositions pour l'alimentation en énergie, p. ex. en énergie pour la charge
An electrostatic coater capable of realizing high-level coating quality is provided. Shaping air SA, discharged from an air port, is directed radially outward. An elevation angle thereof preferably ranges from 10 to 20 degrees. Further, the shaping air SA is a flow in a state of being twisted in a direction opposite to the rotation direction R of a bell cup. The twisting angle about the axis O of the bell cup preferably ranges from 38 to 60 degrees. A liquid thread of paint extends radially outward from the outer peripheral edge of the bell cup, and the paint separated from the tip end thereof becomes a particle. It is preferable that the shaping air SA collides with the paint particle at a point P where the momentum of the paint particle is decreased of the paint particle is decreased.
B05B 3/10 - Appareillages de pulvérisation ou d'arrosage avec des éléments de sortie mobiles ou des éléments déflecteurs mobiles avec des éléments rotatifs avec évacuation sur la presque totalité de la périphérie de l'élément rotatif
B05B 5/03 - Appareillages pour délivrer le matériau, p. ex. pistolets de pulvérisation électrostatique caractérisés par l'utilisation de gaz
B05B 5/04 - Appareillages pour délivrer le matériau, p. ex. pistolets de pulvérisation électrostatique caractérisés en ce qu'ils comportent une sortie rotative ou des éléments déflecteurs
7.
Rotary atomizing electrostatic applicator and shaping air ring for the same
a of the bell cup, wherein the first air holes 30 are arranged at equal intervals on a circumference centered around a rotation axis of the bell cup 10, the first air holes 30 are oriented in a direction opposite to a rotation direction of the bell cup 10; and the atomization air SA-IN discharged through the first air holes 30 is twisted in the direction opposite to the rotation direction of the bell cup 10 at an angle of 50 degrees or more and less than 60 degrees.
B05B 3/00 - Appareillages de pulvérisation ou d'arrosage avec des éléments de sortie mobiles ou des éléments déflecteurs mobiles
B05B 5/04 - Appareillages pour délivrer le matériau, p. ex. pistolets de pulvérisation électrostatique caractérisés en ce qu'ils comportent une sortie rotative ou des éléments déflecteurs
B05B 3/10 - Appareillages de pulvérisation ou d'arrosage avec des éléments de sortie mobiles ou des éléments déflecteurs mobiles avec des éléments rotatifs avec évacuation sur la presque totalité de la périphérie de l'élément rotatif
B05B 5/03 - Appareillages pour délivrer le matériau, p. ex. pistolets de pulvérisation électrostatique caractérisés par l'utilisation de gaz
The present invention provides an electrostatic coater which is provided with: a rotary atomization head (10); and a plurality of air ejection ports (12) which are disposed at equal intervals along a single circumference which is coaxial with a rotational centre axis line (O) of the rotary atomization head (10), and which eject shaping air (SA). The shaping air (SA) is directed radially outwards such that a portion of secondarily dispersed air of the shaping air (SA) follows a strand (20) of liquid extending from the rotary atomization head (10), and collides with paint particles (22) separated from the strand (20) of liquid paint extending radially outwards from the rotary atomization head (10). A vertical clearance (Lv) between an outer peripheral edge (10b) of the rotary atomization head (10) and a point (P) at which the shaping air (SA) collides with the paint particles (22) is 5.6-43.2 mm. The shaping air (SA) is configured as an air current in a state of twisting in an inverse direction to a rotation direction of the rotary atomization head (10). As a result of the configuration of the present invention, the strand of liquid can be enlarged, and the paint particles can be micronized.
B05B 5/03 - Appareillages pour délivrer le matériau, p. ex. pistolets de pulvérisation électrostatique caractérisés par l'utilisation de gaz
B05B 5/04 - Appareillages pour délivrer le matériau, p. ex. pistolets de pulvérisation électrostatique caractérisés en ce qu'ils comportent une sortie rotative ou des éléments déflecteurs
9.
ELECTROSTATIC COATER AND ELECTROSTATIC COATING METHOD
The present invention is an electrostatic coater (100) comprising a high operational voltage generator (104) for generating a high voltage to charge the coating during a workpiece (W)-coating operation and a second high voltage generator (110) for generating a high voltage of a reverse polarity to the polarity of the high voltage generated by the high operational voltage generator (104). The second high voltage generator (110) receives power supply immediately after power supply to the high operational voltage generator (104) is stopped and is for generating a high voltage to neutralize the charged state of the electrostatic coater (100). The configuration makes it possible to neutralize the charge remaining on the electrostatic coater shortly after power supply to the electrostatic coater is stopped.
B05B 5/053 - Dispositions pour l'alimentation en énergie, p. ex. en énergie pour la charge
B05B 5/03 - Appareillages pour délivrer le matériau, p. ex. pistolets de pulvérisation électrostatique caractérisés par l'utilisation de gaz
B05D 1/04 - Procédés pour appliquer des liquides ou d'autres matériaux fluides aux surfaces réalisés par pulvérisation comportant l'emploi d'un champ électrostatique
The purpose of the invention is to reduce time required for the work of replacing divided cables. An electrostatic coating cable (6) includes a power supply line (12) for supplying power to a high-voltage generator (2), a signal line (14) for controlling the high-voltage generator (2), and an earth line (16). The power supply line (12) is connected through a first diode (22) and a first test wire (18) to the earth line (16), and the signal line (14) is connected through a second diode (24) and a second test wire (20) to the earth line (16). The first and second diodes (22, 24) prevent current from flowing through the first and second test wires (18, 20) when an electrostatic coating machine (1) is in operation. The first and second test wires (18, 20) and the first and second diodes (22, 24) are housed in a cable connecting portion (8) for connecting an adjacent divided cable (10). While the electrostatic coating machine (1) is being halted, a test voltage is applied to the earth line (16).
A rotary atomizing head enables cleaning by decomposing from the atomizing head, and enables internal cleaning without decomposing to individual components when paint is changed to a new one of another color. A structural component has a front wall acting as a hub, side wall extending rearward from an outer circumferential perimeter of the front wall to make a circumferentially continuous plane, legs each having a pawl and a bottom wall. The structural component is detachably mounted in a central concavity of an atomizing head body. A bottom wall of the structural component has formed a spoon-cut recess. The central concavity has an inclined circumferential wall, and the side wall of the structural component has an inclined outer circumferential surface complementary with the circumferential wall of the atomizing head body to get in substantial contact with the circumferential wall throughout the entire area of the outer circumferential wall.
B05B 3/10 - Appareillages de pulvérisation ou d'arrosage avec des éléments de sortie mobiles ou des éléments déflecteurs mobiles avec des éléments rotatifs avec évacuation sur la presque totalité de la périphérie de l'élément rotatif
B05B 5/04 - Appareillages pour délivrer le matériau, p. ex. pistolets de pulvérisation électrostatique caractérisés en ce qu'ils comportent une sortie rotative ou des éléments déflecteurs
B05B 3/02 - Appareillages de pulvérisation ou d'arrosage avec des éléments de sortie mobiles ou des éléments déflecteurs mobiles avec des éléments rotatifs
[Problem] To provide a rotary atomizing painting device that can also be used in general electrostatic painting and, while atomizing paint, can expand the coating pattern of the paint. [Solution] The rotary atomizing painting device is provided with a bell cup (3) disposed at the front most part in the paint spray direction (direction with the X mark shown in FIG. 1) and axially supported by a rotating shaft (2b) and a shaping air ring (4) disposed rearward of this bell cup (3) in the paint spray direction and in which a plurality of discharge openings 4a, 4a ... is formed on the periphery centered on the rotating shaft (2b). The plurality of discharge openings 4a, 4a ... is formed such that the axial direction of the plurality of discharge openings 4a, 4a ... is in a direction and a slant to the rotating shaft (2b). The axial direction of the plurality of discharge openings 4a, 4a ... is formed to aim at a back surface part (3b), which is a part on the back surface side of the bell cup (3) from the paint spray direction.
B05B 5/03 - Appareillages pour délivrer le matériau, p. ex. pistolets de pulvérisation électrostatique caractérisés par l'utilisation de gaz
B05B 5/04 - Appareillages pour délivrer le matériau, p. ex. pistolets de pulvérisation électrostatique caractérisés en ce qu'ils comportent une sortie rotative ou des éléments déflecteurs
[Problem] To provide a rotary atomizing head that can be disassembled for cleaning and can also change the color thereof by internal cleaning without being disassembled. [Solution] A mechanism component (4) comprises: a side wall (12) that extends rearward from the outer circumferential edge of a front wall (10) constituting a hub portion and continues in the circumferential direction; a plurality of legs (14) having a pawl (14a); and a bottom portion (18) that continues from the rear end of the side wall (12). The mechanism component (4) is detachably mounted in a central recess portion (6) of an atomizing head body (2). A spoon-cut groove (34) is formed on the bottom portion (18) of the mechanism component (4). A peripheral wall (8) of the central recess portion (6) of the atomizing head body (2) is formed of an inclined wall. An outer circumferential surface (12a) of the side wall (12) of the mechanism component (4) is also inclined corresponding to the inclination of the peripheral wall (8). The entire outer circumferential surface (12a) is substantially in contact with the peripheral wall (8) of the central recess portion (6).
B05B 5/04 - Appareillages pour délivrer le matériau, p. ex. pistolets de pulvérisation électrostatique caractérisés en ce qu'ils comportent une sortie rotative ou des éléments déflecteurs
B05B 3/10 - Appareillages de pulvérisation ou d'arrosage avec des éléments de sortie mobiles ou des éléments déflecteurs mobiles avec des éléments rotatifs avec évacuation sur la presque totalité de la périphérie de l'élément rotatif
An airless spray gun includes: an ultrasonic device that has a vibrating element (11) that generates ultrasonic vibrations, and a horn (12), connected to the vibrating element (11), that transmits the ultrasonic vibrations generated by the vibrating element (11); a cap (13), in which a jet orifice (16) is formed, that is fitted to a distal end portion of the horn (12); and a coating material chamber (17) that stores a coating material and that is located between the distal end portion of the horn (12) and the cap (13). Acoustic streaming is produced at the distal end portion of the horn (12) by the ultrasonic vibrations generated by the vibrating element (11). The acoustic streaming discharges the coating material from the coating material chamber (I7) through the jet orifice (16).
B05B 17/06 - Appareils de pulvérisation ou d'atomisation de liquides ou d'autres matériaux fluides, non couverts par les autres groupes de la présente sous-classe opérant suivant des procédés particuliers utilisant des vibrations ultrasonores
15.
ROTARY ATOMIZING HEAD FOR ELECTROSTATIC COATING MACHINE
A mechanism component (4) which can be attached to and removed from an atomizing head body (2) is adapted to be easily positioned and to be reliably affixed to the atomizing head body (2). The mechanism component (4) is provided with a side wall (14) which continues in the circumferential direction, legs (16) which are provided with claws (16a), and a circumferential ridge (20) which is provided on the inner side of the legs (16) in the radial direction. The circumferential ridge (20) is seated on the outer peripheral section of a circumferential base (22) of the atomizing head body (2) and makes contact with the outer peripheral surface of the circumferential base (22). The peripheral wall (8) of the center recess (6) of the atomizing head body (2) comprises a tilted wall. The tilt of the outer peripheral surface (14a) of the mechanism component (4) is complementary to that of the peripheral wall (8). The entire region of the outer peripheral surface (14a) of the mechanism component (4) is substantially in contact with the peripheral wall (8) of the center recess (6).
B05B 5/04 - Appareillages pour délivrer le matériau, p. ex. pistolets de pulvérisation électrostatique caractérisés en ce qu'ils comportent une sortie rotative ou des éléments déflecteurs
B05B 3/10 - Appareillages de pulvérisation ou d'arrosage avec des éléments de sortie mobiles ou des éléments déflecteurs mobiles avec des éléments rotatifs avec évacuation sur la presque totalité de la périphérie de l'élément rotatif
Provided is an electrostatic coating machine employing a removable paint cartridge, which enable one to clean the paint flow path including coupling parts between the main body of the coating machine and a paint cartridge, with the said coupling parts including the paint outlet of the paint cartridge. The paint cartridge (10) has a stepped sleeve (300) projecting downward from the bottom face thereof and being displaceable up and down. The stepped sleeve (300) has a valve seat (302) for a first check valve (30) formed at the lower end thereof. A movable valve body (304) to fit to the valve seat (302) is energized by an inner peripheral spring (306) in the direction for fitting to the valve seat (302). A hollow (40) of the main body (6) of the coating machine has a secondary hollow (402) for fitting of a smaller-diameter part (300a) of the stepped sleeve (300). At the center of the bottom face of the secondary hollow (402), is opened a paint feeding channel (44).
B05B 5/16 - Dispositions pour l'alimentation en liquides ou en autres matériaux fluides
B05B 12/14 - Aménagements de commande de la distributionAménagements de réglage de l’aire de pulvérisation pour fournir à un orifice de pulvérisation unique, un liquide ou un autre matériau fluide choisi parmi plusieurs
17.
PAINT CARTRIDGE FOR ELECTROSTATIC COATING APPARATUS AND ELECTROSTATIC COATING APPARATUS INCLUDING SAME
Disclosed are a paint cartridge for an electrostatic coating apparatus and an electrostatic coating apparatus including the same capable of reducing the amount of paint to be discarded when color is changed and capable of simplifying control of supply/discharge of operating liquid to/from the paint cartridge during washing. During washing of a paint cartridge (10), air and washing solution are supplied to a squashed paint bag (12) through an upper end opening (12b) thereof so that the paint bag (12) is expanded. When the paint bag (12) is expanded, operating liquid inside an operating liquid chamber (enclosed space; 14) of the paint cartridge (10) is collected through an operating liquid discharge path (26) inside the cartridge. In the next step, the operating liquid is supplied to the operating liquid chamber (enclosed space; 14) of the paint cartridge (10) through an operating liquid supply path (22) inside the cartridge so that the paint bag (12) is squashed, and drives the washing solution to be discharged from a lower end opening (12c) of the paint bag (12).
B05B 5/16 - Dispositions pour l'alimentation en liquides ou en autres matériaux fluides
B05B 12/14 - Aménagements de commande de la distributionAménagements de réglage de l’aire de pulvérisation pour fournir à un orifice de pulvérisation unique, un liquide ou un autre matériau fluide choisi parmi plusieurs
18.
METHOD OF WASHING PAINT CARTRIDGE FOR ELECTROSTATIC COATING APPARATUS AND PAINT BAG
Disclosed are a method of washing a paint cartridge for an electrostatic coating apparatus and a paint bag capable of reducing the amount of paint to be discarded when the inside of the paint cartridge is washed for color change. During washing of a paint cartridge (10), air and washing solution are supplied to a squashed paint bag (12) through an upper end opening (12b) thereof so that the paint bag (12) is expanded. When the paint bag (12) is expanded, operating liquid inside an enclosed space (operating liquid chamber; 14) of the paint cartridge (10) is collected through an operating liquid discharge path (26) inside the cartridge. In the next step, the operating liquid is supplied to the operating liquid chamber (enclosed space; 14) of the paint cartridge (10) through an operating liquid supply path (22) inside the cartridge so that the paint bag (12) is squashed, and drives the washing solution to be discharged from a lower end opening (12c) of the paint bag (12).
B05D 1/04 - Procédés pour appliquer des liquides ou d'autres matériaux fluides aux surfaces réalisés par pulvérisation comportant l'emploi d'un champ électrostatique
B05B 5/16 - Dispositions pour l'alimentation en liquides ou en autres matériaux fluides
19.
COATING CARTRIDGE AND ELECTROSTATIC COATING MACHINE
The amount of the coating disposed of at the time of a color change is reduced, and the cleaning of a coating machine body is simplified. When cleaning a coating cartridge (10), air and a cleaning fluid are supplied to a coating bag (12) in a squashed state through an upper end mouth section (12b) thereof, thereby causing the coating bag (12) to be expanded. The hydraulic fluid in a hydraulic fluid chamber (an enclosed space (14)) of the coating cartridge (10) is recovered through a hydraulic fluid evacuation passage (26) in the cartridge with the expansion of the coating bag (12). In the next process, the hydraulic fluid is supplied to the hydraulic fluid chamber (the enclosed space (14)) of the coating cartridge (10) through an in-cartridge hydraulic fluid supplying passage (22) different from the hydraulic fluid evacuation passage (26) to squash the coating bag (12), causing the cleaning fluid to be evacuated from a lower end mouth section (12c) of the coating bag (12).
B05B 5/16 - Dispositions pour l'alimentation en liquides ou en autres matériaux fluides
B05B 12/14 - Aménagements de commande de la distributionAménagements de réglage de l’aire de pulvérisation pour fournir à un orifice de pulvérisation unique, un liquide ou un autre matériau fluide choisi parmi plusieurs
Intended is to enable an electrostatic coating apparatus including a plurality of needle electrodes formed in an annular shape and having a blot preventing function, to prevent the generation of a spark discharge reliably, in case an arbitrary needle electrode approaches an earth element, and to keep the intensity of a generated electrostatic field properly. A coating gun comprises a blot preventing device including a ring-shaped electrode unit having a plurality of needle electrodes protruding radially at a substantially equal spacing radially outward from an annular base member, and a high-voltage generator for applying a high voltage to the electrode unit. The needle electrodes are connected in parallel with the high-voltage generator through individual resistors, block-by-block resistors and built-in resistors.
The stain preventing cover is formed from a composite sheet 24 having a three layer structure as a raw material which is produced by laminating a first sheet material 21 having a low dielectric constant and having insulation performance, a second sheet material 22 having a dielectric constant higher than that of the first sheet material 21 or having semiconductivity and a third sheet material 23 having a dielectric constant lower than that of the second sheet material 22 and having insulation performance, in which an end of the second sheet material 22 is positioned together with an end of the first and third sheet materials 21 and 23 adjacent to a electrostatic high voltage part 10 of a coating machine and another end thereof is positioned distant from an earth part 11 of the coating machine to be electrically insulated. The influence of the disturbance of the electric potential distribution on the surface of a coating machine main body 5 is alleviated by the first and second sheet materials 21 and 22 to cause the electric potential distribution on the surface of the third sheet material 23 to be homogeneous to thereby preventing the attaching of atomized coating particles to the surface.
B05B 5/025 - Appareillages pour délivrer le matériau, p. ex. pistolets de pulvérisation électrostatique
B05B 1/28 - Buses, têtes de pulvérisation ou autres dispositifs de sortie, avec ou sans dispositifs auxiliaires tels que valves, moyens de chauffage avec des moyens incorporés pour faire écran au liquide ou autre matériau fluide sortant, p. ex. pour limiter l'aire de pulvérisationBuses, têtes de pulvérisation ou autres dispositifs de sortie, avec ou sans dispositifs auxiliaires tels que valves, moyens de chauffage avec des moyens pour empêcher l'égouttement ou pour recueillir l'excès de liquide ou autre matériau fluide
An electrostatic coating system includes a coating robot (1) and an electrostatic atomizer (6) attached to a polyarticular wrist portion (5) of the robot (1). The atomizer (6) includes an end plate (45), metallic connector (50) fixed to the end plate (45) in electric conduction, high voltage generator (20) and bell head (18). Electric power is supplied to the high voltage generator (20) through the connector (50). Wires (53) are connected to the connector (50) to take out high voltage leak caused by contamination like a deposition of paint on outer surfaces of the atomizer (6) through the wires 53 to control the high voltage generator (20) to lower the value of the high voltage applied to the bell head (18) of high voltage leak detected through the wires (53) is larger than a predetermined threshold value.
The leakage of high voltage to the outside is cut off by use of an arm of a paint robot. A tank (25) is mounted on the robot arm (1). The tank (25) is filled with water for use as an operating liquid. The water is supplied to a paint cartridge (4) by use of a pump (24) controlled by a controller (40). Water ejected from the pump (24) under pressure is supplied to the paint cartridge (4) by use of a water-conducting tube (12). A high voltage generator (45) and a breeder resistance (46) are provided on the tank (25). High voltage generated in the high voltage generator (45) is supplied to an electrostatic paint device (2) via water. A nozzle (32) communicated with a water (an operating liquid) source (34) is relatively connected with a main pipe (23) so as to refill the tank (25) with water. During the generation of high voltage by the high voltage generator (45), the nozzle (32) and the main pipe (23) are separated from each other and electric insulation between the nozzle (32) and the main pipe (23) is maintained.
B05B 5/04 - Appareillages pour délivrer le matériau, p. ex. pistolets de pulvérisation électrostatique caractérisés en ce qu'ils comportent une sortie rotative ou des éléments déflecteurs
B05B 12/00 - Aménagements de commande de la distributionAménagements de réglage de l’aire de pulvérisation
Intended is to enable an electrostatic coating apparatus including a plurality of needle electrodes formed in an annular shape and having a blot preventing function, to prevent the generation of a spark discharge reliably, in case an arbitrary needle electrode approaches an earth element, and to keep the intensity of a generated electrostatic field properly. A coating gun (5) comprises a blot preventing device (1) including a ring-shaped electrode unit (4) having a plurality of needle electrodes (3 (3a - 3j)) protruding radially at a substantially equal spacing radially outward from an annular base member (2), and a high-voltage generator (6) for applying a high voltage to the electrode unit (4). The needle electrodes (3) are connected in parallel with the high-voltage generator (6) through individual resistors (9 (9a - 9j)), block-by-block resistors (10 (10a - 10e)) and built-in resistors (11 (11a - 11j)).
An electrostatic coating system includes a coating robot (1) and an electrostatic atomizer (6) attached to a polyarticular wrist portion (5) of the robot (1). The atomizer (6) includes an end plate (45), metallic connector (50) fixed to the end plate (45) in electric conduction, high voltage generator (20) and bell head (18). Electric power is supplied to the high voltage generator (20) through the connector (50). Wires (53) are connected to the connector (50) to take out high voltage leak caused by contamination like a deposition of paint on outer surfaces of the atomizer (6) through the wires 53 to control the high voltage generator (20) to lower the value of the high voltage applied to the bell head (18) of high voltage leak detected through the wires (53) is larger than a predetermined threshold value.
B05B 5/00 - Pulvérisation électrostatiqueDispositifs de pulvérisation comportant des moyens pour charger électriquement le pulvérisatPulvérisation de liquides ou d'autres matériaux fluides par voies électriques
An electrostatic coating device in which the temperature of an electric motor is prevented from rising to a high level and in which the electric motor is reduced in size and weight to downsize and lighten the electrostatic coating device. The electrostatic coating device (100) has an AC servomotor (130) for rotationally driving a rotary atomizer head (120) that rotates to atomize a coating material, an air ejection section (116) having an air ejection opening (116c) for ejecting shaping air (SA) to the outside, and an air path (180) in which air (KA) for air cooling the AC servomotor (130) flows. The air path (180) is communicated with the air ejection opening (116c) and supplies as the shaping air (SA) the cooling air (KA), having been used to cool the AC servomotor (130), to the air ejection opening (116c).
B05B 5/04 - Appareillages pour délivrer le matériau, p. ex. pistolets de pulvérisation électrostatique caractérisés en ce qu'ils comportent une sortie rotative ou des éléments déflecteurs
B05B 5/08 - Installations pour appliquer des liquides ou d'autres matériaux fluides à des objets
Provided is an electrostatic coating apparatus capable of insulating an electric motor electrically from a member, to which an electrostatic high voltage is applied, and reducing the size and weight of the electrostatic coating apparatus. This electrostatic coating apparatus (100) comprises a rotary atomizing head (120), to which a high voltage is electrostatically applied, an electrostatically grounded AC servomotor (130), and a spindle (140) and a fixed insulating member (150) for insulating the AC servomotor (130) electrically from the rotary atomizing head (120) and a speed-increaser (125) to be set at the same potential as that of the former. The spindle (140) and the fixed insulating member (150) have insulation length enlarging portions (143, 141kuk, 153 and 155) of the mode, in which the creeping insulation distances (AB, CD and so on) from the speed-increaser (125) to the AC servomotor (130) are enlarged.
B05B 5/04 - Appareillages pour délivrer le matériau, p. ex. pistolets de pulvérisation électrostatique caractérisés en ce qu'ils comportent une sortie rotative ou des éléments déflecteurs
B05B 5/053 - Dispositions pour l'alimentation en énergie, p. ex. en énergie pour la charge
28.
DEVICE FOR RECOVERING COATING MACHINE CLEANING LIQUID
A device for recovering coating machine cleaning liquid cleans a liquid coating material transportation path of a coating machine and efficiently recovers the cleaning liquid ejected from a coating material ejection opening of the coating machine, where the coating material ejection opening is the end of the coating material transportation path. The device for recovering coating machine cleaning liquid has a recovery device (100) for cleaning the liquid coating material transportation path of the coating machine (1) and after that recovering the cleaning liquid ejected from the coating material ejection opening (50a) formed in a body (50) of the coating machine (1). The recovery device (100) has a cushioning section (110) and a liquid recovery section (120). The cushioning section (110) has a filter placed at a position facing the body (50), which is placed at a position where cleaning liquid ejection is performed, and receives by means of the filter the cleaning liquid ejected from the coating material ejection section (50a) to cushion the flow of the cleaning liquid. The liquid recovery section (120) faces the body (50), which is placed at the position where cleaning liquid ejection is performed, and has a container (121) located at a position on the opposite side of the cushioning section (110) from the body (50). The liquid recovery section (120) receives and recovers the cleaning liquid having passed through the cushioning section (110).
A rotary atomizing head (1) has an inner peripheral surface (2) expanded in diameter from the bottom (21) toward the front end of the rotary atomizing head (1) and also has at the bottom (21) a paint supply nozzle (11) for supplying paint (Lp) and cleaning liquid (Lw). Nozzle holes (10a) of the paint supply nozzle (11) are constructed to discharge the paint (Lp) and the cleaning liquid (Lw) in the direction substantially perpendicular to the rotation axis of the rotary atomizing head (1). Further, a dam (4) is provided on the inner peripheral surface (2) at its intermediate section located between the bottom (21) and a paint discharge end (2c), and the dam (4) dams the paint (Lp) and the cleaning liquid (Lw) that are supplied from the paint supply nozzle (11) to the bottom (21) and flow to the paint discharge end (2c) along the inner peripheral surface (2).
B05B 5/04 - Appareillages pour délivrer le matériau, p. ex. pistolets de pulvérisation électrostatique caractérisés en ce qu'ils comportent une sortie rotative ou des éléments déflecteurs
B05B 3/10 - Appareillages de pulvérisation ou d'arrosage avec des éléments de sortie mobiles ou des éléments déflecteurs mobiles avec des éléments rotatifs avec évacuation sur la presque totalité de la périphérie de l'élément rotatif
A raw material is prepared as a composite sheet (24) of a three-layered structure, in which a first sheet member (21) having a low dielectric constant and an insulating property, a second sheet member (22) having a semiconductive property or a dielectric constant higher than that of the first sheet member (21) and a third sheet member (23) having an insulating property and a dielectric constant lower than the second sheet member (22) are laminated. The second sheet member (22) is so arranged together with the first and third sheet members (21) and (23) that its one end is close to an electrostatic high-voltage portion (10) of a coater and that its other end is apart from an earth portion (11) of the coater, so that it is electrically insulated. The influences of the disturbance of the potential distribution of the surface of a coater body (5) are relaxed by the first and second sheet members (21) and (22), and the potential distribution of the surface of the third sheet member (23) is homogenized, so that the atomized coating droplets are prevented from blotting that surface.
B05B 15/00 - Parties constitutives des installations ou des appareillages de pulvérisation non prévus ailleursAccessoires
B05B 5/025 - Appareillages pour délivrer le matériau, p. ex. pistolets de pulvérisation électrostatique
B05C 21/00 - Accessoires ou instruments employés pour l'application des liquides ou d'autres matériaux fluides à des surfaces, non prévus dans les groupes
A paint sprayer (10) with rotary atomizer has a rotary bell (92) fastened on a rotary shaft (20a) of an air motor (20) held on the paint sprayer and made with multiple nozzle orifices (92a) to jet out paint to an object to be coated. Paint atomized with revolution of the rotary bell sprays out towards the object to be coated. Moreover, there are provided a paint passage (102a) having at the foremost end thereof a paint port (112c) communicating with the nozzle orifices of the rotary bell, and a water passage (108) lying outside the paint passage and having at the foremost end thereof a water port communicating with the nozzle orifices of the rotary bell. A needle (94) may be installed to open and close the paint port.
B05B 5/04 - Appareillages pour délivrer le matériau, p. ex. pistolets de pulvérisation électrostatique caractérisés en ce qu'ils comportent une sortie rotative ou des éléments déflecteurs
Proposed is an electrostatic coating system, which is suited for conductive paint while suppressing its cost increase. Two first and second paint tanks (12 and 13) are selectively connected to an in-arm paint conduit (10) of a robot arm (4), so that the paint in the first or second paint tank (12 or 13) is sucked and pumped toward a painter (5) by a paint pump (17). At the upstream end of the in-arm paint conduit (10), there are disposed a rapid fluid coupling (21) and an air cylinder (23), which constitute a voltage block mechanism, and an air insulating space is formed between the in-arm paint conduit (10) and a rinsing line conduit (35) by separating a male connector (22) from a female connector (20).
An electrostatic coating device (18) is removed from a robot arm (16) to expose to the outside a relay plate (36) fixed to the forward end of the robot arm (16) by a bolt (42)(Fig. 5(I)). Then, a connector fixation member (50) circumferentially split into two pieces and positioned at a plate surface (36a), which is located on the electrostatic coating device (18) side, of the relay plate (36) is removed. A male connector (62) of a new cable (60) is connected to a female connector (52) of a broken electric power supply cable (24) (Fig. 5(II)). The broken cable (24) is pulled out to the outside from the base end side of the robot arm (16). The new cable (60) is pulled into the robot arm (16) as the broken cable (24) is pulled out to the outside. The electric power cable in the robot arm (16) can be replaced without removing the relay plate (36), so that time otherwise required for such work can be saved.
B05B 5/053 - Dispositions pour l'alimentation en énergie, p. ex. en énergie pour la charge
B05B 12/00 - Aménagements de commande de la distributionAménagements de réglage de l’aire de pulvérisation
B25J 19/00 - Accessoires adaptés aux manipulateurs, p. ex. pour contrôler, pour observerDispositifs de sécurité combinés avec les manipulateurs ou spécialement conçus pour être utilisés en association avec ces manipulateurs
A rotary electrostatic coating apparatus capable of variably controlling a coating pattern width. Shaping air discharge openings (1) are arranged on a first circle (2) about the rotation axis L of a rotary head, and pattern control air discharge openings (3) are formed on the outer side of the shaping air discharge openings. The shaping air discharge openings (1) and the pattern control air discharge openings (3) are tilted around the rotation axis L, so that shaping air (5) and pattern control air (6) are helical airflows in the same swirl direction. The tilt angle &bgr; of the pattern control air (6) is greater in absolute value than the tilt angle &agr; of the shaping air (5).
B05B 5/04 - Appareillages pour délivrer le matériau, p. ex. pistolets de pulvérisation électrostatique caractérisés en ce qu'ils comportent une sortie rotative ou des éléments déflecteurs
35.
SPRAY DEVICE AND PROCESS FOR MANUFACTURING THE SAME
A lightweight spray device with spray body that is suitable for precision cast molding, solving general casting problems, such as shrinkage and bubbling; and a process for manufacturing the same. The spray device is one with magnesium spray body provided with a spray part and a handle part, characterized in that the magnesium spray body is one formed with the use of a mold for magnesium spray body wherein a first slide pin is provided at a region where the spray part and the handle part cross each other and wherein around the first slide pin, there is provided a product melt orifice.
B05B 7/02 - Pistolets pulvérisateursAppareillages pour l'évacuation
B22D 17/00 - Coulée sous pression ou moulage par injection, c.-à-d. moulage en introduisant le métal dans le moule sous haute pression
B22D 17/22 - Moules métalliquesPlaques de moulesSupports de moulesÉquipement de refroidissement des moulesAccessoires pour l'extraction et l'éjection des pièces hors du moule
brevets
