JPH07178366A - Roller type coating applicator - Google Patents

Abstract

PURPOSE:To thickly and uniformly apply a coating material on a surface to be coated by rotating a roller brush without slipping on the surface to be coated even if a coating material having a relatively high viscosity is used. CONSTITUTION:The roller brush 1 formed by mounting cylindrical brush blanks 15 having a property to penetrate a coating material at the outer periphery of a hollow roller 14 communicating the inside and the outside is freely rotatably supported on a roller supporting body 2 and the coating material is supplied to these brush blanks 15 from a coating material supplying source through a coating material pool 19 in the hollow part of the roller 14. The roller brush 1 obtains the rotating torque of an air motor 23 and rotates exactly on the surface to be coated without slipping thereon.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roller brush in which a cylindrical brush base having paint permeability is mounted on the outer circumference of a hollow roller which communicates with the inside and outside, and rotatably supports the roller brush. A roller support and a handle connected to the roller support are provided, and a paint passage connected to a paint supply source is connected to the hollow portion of the roller, and an operator grips the handle to follow the surface to be coated. The present invention relates to a roller-type application device that applies a coating material that has penetrated into a brush element to a surface to be coated while rolling the roller brush.

[0002]

2. Description of the Related Art According to such a roller type coating apparatus, an appropriate amount of coating material is automatically supplied from a coating material supply source to a brush body through a hollow portion of the roller, so that the surface to be coated and the roller brush are constantly in contact with each other. It is possible to continue the coating work for a long time while keeping it. As a result, there is an advantage that the paint can be efficiently applied to a wide surface to be painted.

[0003]

However, in the conventional roller type coating apparatus, the roller brush is rolled only by the pressing force of the worker against the surface to be coated. However, the paint may penetrate into the sliding portion between the roller support and the roller brush, and the roller brush may not rotate due to its high viscosity.

For example, when transporting an automobile shipped from a factory, it has been proposed to apply a strippable paint to the vehicle body surface in order to temporarily protect the vehicle body surface (see Japanese Patent Application No. 4-317804). . This strippable paint protects the car body surface not only from trauma but also from chemicals such as acid rain and bird droppings.

In order to improve the protective performance of the strippable paint, it is required to apply the paint uniformly and thickly to the vehicle body surface, and in order to meet this requirement, there is a tendency to use the strippable paint having high viscosity. When applying such paint, the roller brush may become non-rotatable in the conventional roller type applicator, and as a result, the strippable paint may be applied to the vehicle body surface with a substantially plate-like brush. As a result, only a thin strippable paint film can be obtained, and the protection performance cannot be improved.

The present invention has been made in view of the above circumstances, and even if a highly viscous paint is used, the roller brush can be rotated to apply the paint thickly and uniformly to the surface to be coated. An object is to provide a coating device.

[0007]

In order to achieve the above object, the invention according to claim 1 is characterized in that a roller generator is provided with a torque generator for applying a rotational torque to the roller.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, a roller type coating apparatus R supports a roller brush 1 for rolling on a surface to be coated and applying a coating material on the surface to be coated, and a rotatably supporting roller brush 1. The roller support 2 and the handle 3 connected to the roller support 2 are provided. The handle 3 is composed of a grip portion 4 for an operator to grip, and a crank-shaped handle portion 5 connecting the grip portion 4 to the roller support 2. This handle 5 is
It consists of two rigid paint conduits 6 and an air conduit 7 made of metal.

A paint supply pipe 9 connected to a paint supply source 8 and an air supply pipe 11 connected to an air supply source 10 are connected to the rear end of the handle 3, that is, the rear end of the grip portion 4. Both supply pipes 9 and 11 have flexibility so that an operator who holds the grip portion 4 can continue the coating work while moving. The paint supply source 8 and the air supply source 10 respectively include a paint pump and an air compressor capable of discharging high-pressure paint and air.

The grip portion 4 is provided with a paint supply passage 12 which connects the paint conduit 6 and the paint supply pipe 9 to each other. Air supply path 13 communicating with the air supply pipe 11
Are formed (see FIG. 3).

Referring to FIG. 2, the roller brush 1 includes a hollow roller 14 having both axial ends open, and the roller 14
And a cylindrical brush element 15 mounted on the outer periphery of the brush.
The brush element 15 is made of a material having permeability and high retention of a paint having a relatively high viscosity such as strippable paint, for example, an open-cell urethane foam or a fiber cloth. A pair of end plates 1 is provided at both open ends of the roller 14.
6, 17 are fitted and coupled, and the hollow portion of the roller 14 becomes a paint reservoir 19.

The roller support 2 is formed in a hollow cylindrical shape, and an air motor 23 as a torque generating device for applying a rotational torque to the roller brush 1 is disposed inside the roller support 2.
The air motor 23 includes a drive chamber 25 formed between an end wall 22 and a partition wall 24 which are integrally formed at one end and an intermediate portion of the roller support 2, and air supply for introducing an air flow into the drive chamber 25. A port 30, a hollow rotor shaft 26 rotatably supported by the end wall 22 and the partition wall 24, a plurality of motor blades 27 projecting from the outer periphery of the rotor shaft 26 in the drive chamber 25, and the motor blades. And an exhaust port 31 for letting the airflow acting on 27 and rotating the rotor shaft 26 escape from the drive chamber 25. In the air supply port 30,
The tip of the air conduit 7 is connected. Sealing members 28 and 29 are provided between the rotor shaft 26 and the end wall 22 and the partition wall 24, respectively.

The air motor 23 is connected to the air supply source 10 by
The motor blade 27 receives the air flow passing through the drive chamber 25 at high speed through the air passage including the air supply pipe 11, the air supply passage 13 in the grip portion 4, and the air conduit 7, and generates the rotational torque.

The rotor shaft 26 of the air motor 23 penetrates the end wall 22 of the roller support 2 and fits into a mounting hole 32 formed in one end plate 16 of the roller brush 1. The rotor shaft 26 and the end plate 16 are connected by a push screw 33 that is screwed into the end plate 16, and the rotational torque generated by the air motor 23 is transmitted to the roller 14.

Inside the roller support 2, adjacent to the air motor 23, from the paint conduit 6 to the roller support 2.
A paint introducing chamber 36 for introducing paint is provided.
The paint introducing chamber 36 is formed by a pair of partition plates 34 and 35 which are fitted to the intermediate portion of the roller support 2 while being spaced from each other via a spacer 37.

In the hollow portion of the rotor shaft 26 of the air motor 23, a paint introducing pipe 38 that connects the paint introducing chamber 36 to the paint reservoir 19 in the roller 14 is provided. The tip of the paint introducing pipe 38 contacts the end plate 17 of the roller brush 1 and is fixed to the end plate 17 by a screw 39 that closes the open end of the introducing pipe 38. The base end of the paint introducing pipe 38 is rotatably supported by the pair of partition plates 34 and 35, and the open end thereof is closed by a screw 40. Therefore, the roller brush 1 can be easily removed from the roller support 2 by removing the screw 40 and loosening the push screw 33. When the screw 39 is further removed, the roller brush 1 is passed through the mounting hole 32.
The paint introducing pipe 38 can be taken out from the pipe.

The paint reservoir 19 in the roller 14 is a paint supply pipe 9 connected to the paint supply source 8, a paint supply passage 12 in the grip 4, a paint conduit 6, a paint introduction chamber 36 and a paint introduction pipe 38 in the roller support 2. Will be connected to the paint passage. The roller 14 is provided with a plurality of ejection holes 41 that communicate the inside and outside of the roller 14 over the entire circumference of the roller 14 in order to allow the paint introduced into the paint reservoir 19 to penetrate into the brush element 15.

Referring to FIG. 3, the grip portion 4 of the handle 3 has an on / off state in which the flow and cutoff of the paint in the paint supply path 12 and the flow and cutoff of the air in the air supply path 13 can be collectively controlled. Mechanism 42 and their supply paths 12, 1
First and second flow rate control valves 43 and 44 capable of individually controlling the flow rates of the paint and air flowing through the inside of the unit 3 are provided.

The on / off mechanism 42 is provided in the paint supply path 12 and projects from the upper surface of the grip portion 4 of the first actuator 4.
Normally-closed paint on-off valve 46 having 5 and air supply path 1
3, which is also a normally-closed air on-off valve 48 having a second operator 47 protruding from the upper surface of the grip portion 4, and a first and a first valve for controlling the opening and closing of the both on-off valves 46, 48. A pivot shaft 50 that can be moved back and forth with respect to the two actuators 45 and 47.
And an on / off lever 49 supported by the grip portion 4 by the on / off lever 49.
Pressing 5, 47 opens the corresponding on-off valves 46, 48.

Further, the swing center of the on / off lever 49,
That is, the pivot 50 is arranged so that the first actuator 45 is more than the second actuator 47.
When the on / off lever 49 is pressed, the paint opening / closing valve 46 and the air opening / closing valve 48 are arranged.
The valves are sequentially opened with a certain time difference.

The first and second flow rate control valves 43 and 44 are
Dials 51 and 52 for adjusting the flow rates of paint and air are provided.

Next, the operation of this embodiment will be described.

First, the paint supply source 8 and the air supply source 10 are operated in a state where the on / off lever 49 of the roller type coating device R is held in the off position to reach the paint opening / closing valve 46 and the air opening / closing valve 48. Introduce high pressure paint and air.

When the roller brush 1 is brought into contact with the surface to be coated and the on / off lever 49 is pressed, the on / off lever 49 contacts the first actuator 45 and pushes it down. The paint opening / closing valve 46 is opened, and the paint passes through the paint supply passage 12 in the grip portion 4, the paint conduit 6, the paint introducing chamber 36 and the paint introducing pipe 38 in the roller support 2, and the paint is applied to the roller 1
4 is introduced into the paint reservoir 19. The paint introduced into the paint reservoir 19 is ejected from the ejection holes 41 to the outer periphery of the roller 14 and permeates the brush element body 15.

If the on / off lever 49 is further pressed when the paint has sufficiently penetrated into the brush element 15 of the roller brush 1, the on / off lever 49 contacts the second actuator 47 and pushes it down. The air opening / closing valve 48 opens, and air is introduced into the drive chamber 25 from the air supply port 30 of the air motor 23 via the air supply passage 13 and the air conduit 7 in the grip portion 4. The airflow introduced into the drive chamber 25 acts on the motor blades 27 to rotate the rotor shaft 26 and generate rotational torque. The airflow used to rotate the motor shaft 26 is discharged from the exhaust port 31.

In this state, when the operator rolls the roller brush 1 on the surface to be coated, the paint that has penetrated into the roller brush 1 is applied to the surface to be coated.

The roller brush 1 obtains the rotation torque of the air motor 23 to prevent the roller brush 1 from being locked due to the viscosity of the paint that has entered the sliding portion with the roller support 2.
Rolls properly without slipping on the coated surface. Therefore, even if a high-viscosity paint such as strippable paint for temporarily protecting the vehicle body surface of the vehicle is used, the rotation of the roller brush 1 does not stop, and the paint is evenly applied to the surface to be coated. And it becomes possible to apply it thickly.

At this time, the dial 5 of the second flow control valve 44
2 is operated to adjust the rotation torque of the air motor 23.
The rotation torque of the air motor 23 is the same as that of the roller brush 1 during application.
It is preferable that the roller brush 1 be self-rotating at a speed equal to or slower than the rolling speed. Such a rotation torque not only prevents the rotation of the roller brush 1 from locking, but also prevents the roller brush 1 from excessively rotating and slipping on the surface to be coated, so that the paint can be uniformly applied to the surface to be coated. It can be applied thickly.

When the rotational torque of the air motor 23 is not required, the on / off lever 49 can be held halfway pressed and held, and only the paint opening / closing valve 46 can be opened to perform the coating operation.

Although the air motor is used as the torque generator in the above embodiment, an electric motor or the like may be used instead of the air motor.

[0031]

As described above, according to the features of the invention described in claim 1, since the roller brush obtains the rotation torque of the rotation torque generator, even if a paint having a relatively high viscosity is used,
The roller brush can be rotated without slipping on the surface to be coated, and the coating can be applied uniformly and thickly to the surface to be coated.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a roller type coating device according to the present invention.

2 is a sectional view taken along line 2-2 in FIG.

FIG. 3 is a side view of a grip portion viewed from an arrow 3 in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Roller brush 2 Roller support 3 Handle 6 Paint conduit (paint passage) 8 Paint supply source 9 Paint supply pipe (paint passage) 12 Paint supply passage (paint passage) 14 Roller 15 Brush element body 19 Paint reservoir (hollow part) 23 Air motor (rotating torque generator) 36 Paint introduction chamber (paint passage) 38 Paint introduction pipe (paint passage) R Roller type coating device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takao Arasawa 1-10-10 Shin-Sayama, Sayama-shi, Saitama Honda Motor Co., Ltd. Saitama Factory

Claims (1)

[Claims] 1. A roller brush (1) in which a cylindrical brush element (15) having paint permeability is mounted on the outer circumference of a hollow roller (14) communicating with the inside and outside, and the roller brush (1). A roller support (2) for rotatably supporting the roller and a handle (3) connected to the roller support (2) are provided, and the hollow portion (19) of the roller (14) has a paint supply source. Paint passage (9, 12, 6, 36, 3) connected to (8)
In a roller type coating device to which 8) is connected, a torque generating device (23) for giving a rotational torque to the roller (14)
Is provided on the roller support (2).