A rotary atomization type painting apparatus has a bell cup attached to a rotary drive shaft. A side surface of the bell cup is formed to be parallel to the rotary drive shaft. An inner surface of the side surface portion is provided with a first groove portion, a second groove portion, and a third groove portion that are recessed toward a direction of an outer surface of the side surface portion. The first groove portion, the second groove portion, and the third groove portion are provided with a first insertion hole, a second insertion hole, and a third insertion hole. The first insertion hole, the second insertion hole, and the third insertion hole pass through the inner surface and the outer surface, and eject a paint to the outside of the bell cup.

A rotary atomizing coating device includes a main body including a rotary drive unit, and a bell cup attached to the rotary drive unit. The bell cup includes: a side surface portion extending toward a distal end in an axial direction of the rotary drive unit; a through hole configured to allow an inner surface and an outer surface of the side surface portion to communicate with each other and also configured to eject a coating material therethrough; and an outward protruding portion that is formed closer to the distal end in the axial direction than the through hole and protrudes more outward in a radial direction of an axis of the rotary drive unit than the side surface portion.

A rotary atomization head is provided, which prevents discharged threads of a coating material from making contact with each other and from being unified. A rotary head 1 includes: a diffusion surface 122 to diffuse the coating material toward an outer edge part 123 by centrifugal force; and a plurality of grooves 124 formed on the outer edge part 123. The plurality of grooves 124 extends in a radial direction. The adjacent grooves 124 have different depths. The grooves 124 have the same width.

To provide a production method capable of producing an antiglare film-coated substrate having excellent antiglare performance in a short time, an antiglare film-coated substrate having excellent antiglare performance, and an article provided with the substrate. A method for producing an antiglare film-coated substrate 1 comprising a substrate 3 and an antiglare film 5 formed on the substrate 3, characterized by comprising a step of preparing a coating composition comprising at least one of a silica precursor (A) and particles (C), and a liquid medium (B), wherein the liquid medium (B) contains a liquid medium (B1) having a boiling point of at most 150° C. in an amount of at least 86 mass % based on the total amount of the liquid medium (B), a step of electrically charging and spraying the coating composition by using an electrostatic coating apparatus having an electrostatic coating gun having a rotary atomizing head, to apply it on the substrate 3 to form a coating film, and a step of firing the coating film to form an antiglare film 5.

A coating apparatus includes a first module and a second module constituting a coating area where a coating target is coated. The first module includes a first frame and a coating robot. The second module includes a second frame. When the first module and the second module are arranged to adjoin each other in a movement path direction in which the coating target relatively moves along the coating area, the first frame of the first module and the second frame of the second module that are arranged to adjoin each other are configured to be coupled together.

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.

An electrostatic coating handgun configured to spray electrically charged atomized paint onto a workpiece. The electrostatic coating handgun includes: a body portion extending in a longitudinal direction, the longitudinal direction being the same direction as a spraying direction; a grip portion to be held by an operator, the grip portion extending downward from a rear part of the body portion; a rotating head configured to emit the paint, the rotating head being rotatably supported by a front end of the body portion; an air motor configured to apply rotational power to the rotating head, the air motor being located behind the rotating head in the body portion; and a high voltage generator configured to apply a voltage to the paint to be emitted from the rotating head. The air motor is located forward of the grip portion, whereas the high voltage generator is located above the grip portion.

An electrostatic coating handgun sprays electrically charged atomized paint onto an object to be coated. The electrostatic coating handgun includes: a rotating head; a motor that applies rotational power to the rotating head; a high voltage generator that applies a voltage to the paint; a housing supporting the rotating head with a tip end of the rotating head being exposed, and housing the motor and the high voltage generator; and a grip portion to be held by an operator. When a current value discharged from the rotating head increases due to movement of the rotating head caused by an operation by the operator, a voltage control device reduces an output voltage of the high voltage generator and a motor control device reduces a rotational speed of the motor.

A turbine for a fluid-ejecting device, including a body and a rotor rotating a bowl about an axis, the turbine also including a tube mounted coaxially with the body and intended to be mounted coaxially with a skirt, a first portion of the tube being surrounded by the turbine body and a second portion being surrounded by the skirt and offset in the downstream direction relative to the first portion, the tube being rotatable about the axis relative to the body, the body preventing the translational movement of the tube parallel to the axis, and the outer face of the aforementioned second portion having a first thread engaging with a second thread formed on the skirt in order to press the skirt against the turbine body.

A turbine for a fluid-spraying device including a turbine body, and a rotor rotating a bowl relative to the body about an axis, the rotor being surrounded by the turbine body in a plane perpendicular to the common axis, the turbine body guiding the rotation of the rotor, the rotor being rotated by a stream of gas, the turbine body receiving the stream of gas at the outlet of the rotor, and delimiting at least one outlet duct configured to guide a first portion of the received stream into a space delimited in a plane perpendicular to the common axis by the bowl and a skirt.