Abstract:
A rotary device for spraying a coating product is provided. The rotary device includes a spray member having an edge and able to form a jet of coating product, a device for driving the rotation of the spray member and a body which is fixed. The body that is fixed includes primary orifices arranged on a primary outline surrounding the axis of rotation and intended to eject a primary air jet in a primary direction and secondary orifices arranged on a secondary outline surrounding the axis of rotation and intended to eject a secondary air jet in a secondary direction. The respective orientations and positions of each primary direction and of each secondary direction cause combined jets to be formed, each resulting from the intersection between a primary air jet and a secondary air jet that are associated with one another, the region of intersection lying upstream of the edge.
Abstract:
A low conductivity is provided to a coating surface 21 of a non-conductive coating target 20, and the coating surface 21 is coated with a charged paint while free ions are suppressed.
Abstract:
A rotary atomization coating device is provided with a rotary atomizing head including a paint storage and adapted to atomize paint supplied to the paint storage and to discharge the paint onto a work, and a paint supplying nozzle adapted to supply the paint to the paint storage. The rotary atomizing head includes a plurality of bell cups. Each of the bell cups includes, at a front face thereof, a paint discharging face adapted to thin the paint by a centrifugal force. The rotary atomizing head includes a plurality of paint supplying holes corresponding to the respective bell cups. The paint supplying holes are adapted to supply the paint from the paint storage to the respective paint discharging faces. A plurality of grooves extending along a radial direction of the rotary atomizing head are formed at circumferential portions of the respective paint discharging faces.
Abstract:
A rotary atomizer spray coating device, in certain embodiments, has a bell cup with a generally parabolic flow surface. This generally parabolic flow surface provides additional surface area for dehydration of coating fluids, thereby improving color matching as compared to traditional bell cups, for example, by affording capability for higher wet solids content. In addition, the coating fluid accelerates along the generally parabolic flow surface, resulting in the fluid leaving the bell cup at a greater velocity than in traditional bell cups. Furthermore, a splash plate disposed adjacent the bell cup, in certain embodiments, is designed such that fluid accelerates through an annular area between the splash plate and the generally parabolic flow surface. This acceleration may substantially reduce or eliminate low-pressure cavities in which fluid and/or particulate matter may be trapped, resulting in an even application of coating fluid and more effective cleaning of the bell cup as compared with traditional bell cups.
Abstract:
A rotary atomizing head 1, which has an inner peripheral surface 2 whose diameter increases from a bottom 21 of the inner peripheral surface toward a tip thereof, and atomizes and releases paint by applying a centrifugal force generated by rotation to the paint supplied to the bottom of the inner peripheral surface, includes a paint supply nozzle 11 for supplying the paint and a cleaning solution to the bottom of the inner peripheral surface, and the paint supply nozzle has a nozzle hole 10a for discharging the paint and the cleaning solution from a rotation center O portion of the rotary atomizing head in a direction substantially perpendicular to a rotation axis of the rotary atomizing head. The rotary atomizing head 1 also includes a dam portion 4 that is provided in an intermediate portion between the bottom and the tip of the inner peripheral surface and dams the paint and the cleaning solution supplied from the paint supply nozzle to the bottom and flow along the inner peripheral surface toward the tip.
Abstract:
An electrostatic atomizer (1) is attached to the distal end of an arm (17) of a painting robot to change the direction of paint sprayed from it, following to movements of a wrist portion (17a) of the arm (17). The electrostatic atomizer 1 includes a high voltage generator (4) that is supplied with electric power via a low voltage cable (16) extending through the arm (17). The low voltage cable (16) has an elastically shaped portion (16a) at least as a part thereof. The elastically shaped portion (16a) absorbs torsional or tensile force produced in the low voltage cable (16) under rotations of the wrist portion (17a) of the arm (17) and thereby prevents breakage of wires in the low voltage cable (16).
Abstract:
An object of the present invention is to provide a cartridge-type coating machine having a coating device for spraying paint, to which a simple, light and inexpensive cartridge for storing paint therein and for supplying the paint to the coating device is detachably attached. In a coating machine 11, a coating device having a rotary atomizing head 14 and the like is disposed at a front part of a housing 12, and a cartridge 21, in which paint is stored, is detachably attached to a rear part of the housing 12. Paint in the cartridge 21 is supplied to the rotary atomizing head 14 by pressurizing the cartridge 21 by liquid fluid, and a pressure solvent storage chamber 18b for storing the liquid fluid is formed by the housing 12 and the cartridge 21.
Abstract:
By forming an air flow in which a quantity and a blowoff angle of the air supplied toward an atomized spray paint flow don't influence a coating pattern, there are provided a coating apparatus and a coating method, each of which does not disturb the coating pattern, does not require conditions such as wind speed and temperature of a conventional coating booth, and can perform remarkable reduction in an air conditioning energy of the coating booth, prevention of scatter of a paint, and an improvement in a paint adhesion efficiency. In a spray coating apparatus which possesses a casing and an injection nozzle provided in a tip side of the casing and which forms a coating pattern by injecting paint and shaping air from the injection nozzle to thereby form a coating film on a coated object, a first adapter which blows off the air in an injection direction of the injection nozzle is provided on an substantially concentric circle of the injection nozzle, and the first adapter covers, by blowing off the introduced air while giving it a blowoff angle slanting toward a circumferential direction, an outer periphery of the coating pattern near the injection nozzle with the air.
Abstract:
The bowl according to the invention is equipped with first magnetic coupling means adapted to cooperate with second complementary magnetic coupling means fixed on a non-rotary part of a sprayer, these first and second coupling means being adapted to exert an at least partially axial effort inducing the coupling in rotation of the bowl with a corresponding drive member. The radial width of an annular or truncated surface defined by the first coupling means is greater than the total radial width of the coupling means borne by the non-rotary part.
Abstract:
A bell cup includes an interior defined by an axially rearward metal back region, an axially forward metal discharge edge, and a metal side region extending from the back region toward the discharge edge and terminating at the discharge edge. The back region includes a port having a forward end through which coating material to be atomized is supplied to the interior, and a metal intermediate portion between the forward end and the side region. The intermediate portion is oriented axially further away from the discharge edge than the forward end is axially from the discharge edge.