JPS58205557A - Spray coating device of paint utilizing centrifugal force - Google Patents

Abstract

PURPOSE:To paint suitably thin brittle easily deformable objects by slide contacting an edge to brush rolls to which paint is supplied and rotating at a position in front of objects to be painted suspended in a row and apart from the objects. CONSTITUTION:Objects 7 to be painted that contain thin, brittle and easily deformed aggregate etc. are suspended in a row in axial direction and transported. Paint of specified thickness is sent from supply rolls 17 to brush rolls 9 at a position off from the objects 7 and in front of objects in a plane parallel to the painted face. An edge plate 29 is brought into contact with tangential direction of outer periphery of brush rolls. Painting is performed while tilting and rotating brush rolls. In this way, weak objects can be patterned easily.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a coating apparatus which is also suitable for coating materials containing aggregate.

Such a device was developed by the applicant's research, for example, in Japanese Patent Publication No. 54
- It has already been proposed as No. '953, and in this method, the material to be coated is generally placed on a horizontal conveyor and coated continuously.

However, there is no problem if there is no risk of bending or breaking when the material to be coated is placed horizontally. However, if the material to be coated is thin or brittle, it may be deformed or damaged during the painting process, and the way the material to be coated is fed becomes a problem. Considering this point, it is preferable to send the material to be coated by hanging it.

Therefore, the present invention has been made in view of the above, and is an object of the present invention to provide a coating device that is suitable for coating materials that are thin, brittle, and likely to deform, and is also suitable for decorative coating using coating materials containing aggregate. , the gist of the present invention is a conveying device that hangs and feeds the material to be coated in a line in the width direction, and a brush roll that tilts in a plane parallel to the coating surface at a distant position in front of the material to be coated and scatters the coating material. a supply roll parallel to the four-wheel; a means for feeding the coating material to the supply roll; and a means for transporting the coating material on the supply roll.
The present invention is characterized in that it is provided with a regulating means for controlling the width of the brush roll, a cutting edge plate that contacts the brush roll in the periphery direction iiM'h, and a means for driving the rolls to rotate in the same direction in a predetermined direction.

Practical examples of the present invention will be explained below based on the drawings.

A conveyor rail 2 with a mouth-shaped cross section is attached to the bottom of the ceiling frame 1b at a position close to the frame pillar 1a of the frame 1 of the painting equipment. , are installed in an endless manner following the coating material attachment device u and the removal position. On this rail 2, an endless chain conveyor 5 is mounted, which has rollers 3 on the left and right that meander over the jaws of the rail, and ω-throated rods 4 projecting upward at predetermined intervals. It is sent in a constant direction at the required speed by a sprocket wheel rotated by.

The fishing bar 4 extends below the chain conveyor 5 and is attached to a hook 6 formed at its tip. It is suspended continuously in a line by the metal fittings 8. A brush roll 9 is installed at a position away from the front of the panel 7 suspended from the chain conveyor 5 at an angle of 5° to 45°, preferably 15°-2 in the traveling direction of the panel, that is, in a plane parallel to the painted surface.
A bearing 12 installed on the ceiling frame 1b with a shaft 10 tilted at 5 degrees, and a bearing 13 of the bracket 11 installed on the frame lower stand 1c.
It can receive axial thrust and is rotatably supported. The brush roll 9 is made of elastic material such as stainless steel wire or piano wire around the axis io.

Long plums made of synthetic resin materials such as carbon fiber wire, Saran, and nylon are densely planted in a radial pattern.

Then, use the fine adjustment knob 61 to make sure that the tip of the brush is correctly parallel to the painted surface of panel 7. The brush roll 9 has a bevel gear 14 fixed to the upper end of the shaft, and meshes with the umbrella wheel 16 of the first output shaft of a variable speed 41115 with a built-in motor installed above the ceiling frame 1b, which is necessary for the tip of the brush) It is driven in the direction of the arrow by a rotating diaphragm given a speed of tjJ. In addition, a supply roll 17 is placed in contact with the panel 7 parallel to the brush roll 9 with an opposite hook, and is subjected to an axial thrust by its shaft 18 through a bearing 19 provided on the ceiling frame 1b and a bearing 20 on the bracket 11. It is rotatably supported. The supply roll 17 is made of stainless steel or gold:
The fli is coated with chrome, and shallow grooves of about 2 mm, for example, V-shaped and U-shaped, are cut in an intersecting manner so that the coating material is delivered to the brush roll 9. Supply roll 1
7 has a bevel gear 21 attached to one end of the shaft ↓, and the transmission 15
It meshes with the bevel gear 22 of the second output shaft of the brush roll 9, and the speed required to feed the coating material in the same direction as the brush roll 9 is rotated at the same speed.

In addition, the supply roll 17 is spaced parallel to the brush roll 9 with a distance of about 0.5111 m (the doctor roll 23 connects the bearing 25 provided in the ceiling frame 1b with the bearing 26 of the bracket 11 by its shaft 24). It can receive axial thrust and is rotatably supported.

The doctor roller 23 is made of 16% gold coated with chromium or hard rubber in a cylindrical shape, and smooths the coating material sent between the valleys 1 approaching the supply roll 17 onto the supply roll 17 to a predetermined thickness. act. Therefore, the size between 11 and 11 is adjusted depending on the coating material or coating conditions. This doctor roll 23 can also be replaced with a plate.
A bevel gear 27 is fixed to the upper end of the shaft of the doctor roll 23, which meshes with a bevel gear 28 at the end of the fifth output shaft of the transmission 15. 17 and rotated as shown by the arrow in the opposite direction. Also, next to where the brush tip of the brush roll 9 fights against the panel 7, there is a cutting edge plate 29 that contacts the painted surface of the panel 7 at an edge 29a parallel to the painted surface of the panel 7 over the entire vertical length in the tangential direction of the outer circumference of the brush.

It is fixed to a support shaft 3o that is inclined parallel to the brush roll 9. The support shaft 30 is fixed to the ceiling frame 1b with bolts at a 7-lunge 61 provided at the upper end, and is rotatable within the range of the arc of the bolt hole, which is an arc symmetrical to the axis, and the contact with the brush tip surface is adjusted. In addition, a guide plate 32 is fixed to the cutting edge plate 29 facing the supply roll 17 to prevent the coating material scraped off by the brush from scattering. Further, a coating material supply pipe 36 is opened toward the valley at the upper end of the approaching valley between the supply roll 17 and the doctor roll 26, and the coating material in the coating material storage tank 34 is driven by the motor 37 via the pipe 65. It is delivered by a pressure pump 36. Between the panel 7 and the frame pillar 1a, a wide shoe 39 like a wall is fixed to the ceiling frame 1b to stop the coating material scattered backward from between the panels hanging from the conveyor 5.

Further, the coating material sent out from the supply pipe 36 is supplied to the supply roll 17.
and the excess coating material dripping down the sloping valley while adhering to the doctor roll 23, the remaining coating material dripping from the top of the panel 7 sprayed by the brush roll 9, and the chute 3.
A collection 1a69 that collects the coating material dripping from the rollers 8 and stores it in a central coating material reservoir '59& is installed in a space that includes the lower surface of each roll 9.17.23, the panel, and the chute 33. The recovered coating material is sent back to the storage tank 34 via pipes 40 and 41 by a suction pump 43 driven by a motor 42.

To perform painting with this apparatus configured as described above, two fishing gears 8 attached to the panel 7 of the material to be coated are hooked onto the hooks A of the moving chain 5 and suspended continuously until they are brought to the coating position. and send it. In the painting position, □ is shown in Figure 3, the brush roll and supply roll 17 are clockwise, and the doctor roll 23 is
is rotated counterclockwise, and the ordinary coating material or the slurry-like coating material containing aggregate placed in the storage tank 64 is pumped by the pressure pump 36 and transferred from the supply pipe 33 to the supply roll 17 and the doctor roll 26. The coating material is blown toward the valley and flows down the valley between the two sloped poles. this[
t is the thickness of one chamber between the supply rolls 17 by the doctor roll 23, and is applied onto the supply roll 17 and sent to the brush roll 9 side. The excess coating material is scraped off, and the coating material that has not been completely fed is collected in a collection tank 69. The brush filament of the brush roll 9, which is rotated at high speed by the transmission 15, picks up the coating material from the supply roll 17-L and transforms the material into large and small droplets by the elastic force and centrifugal force of the filament bent by the cutting edge plate 29. After acclimatizing and moving laterally, a layer containing aggregate is applied to the surface of the panel 7. The coating design pattern of the board is determined by the properties of the coating material, the size of the aggregate, the amount of mixture, the speed at which the panel 7 is fed, the number of rotations of the brush roller, the shape of the brush, the supply of the coating material, etc., and is appropriately selected. Panel 71
"K material + supply roll 17. Doctor roll 23. Excess coating material dripping from the chute 38 is received by the recovery tank 39 and collected in the central pool !19&, and is returned via the pipes 40 and 41 by the suction pump 46. The panels 7 are stored in storage 34. The storage #! 1411F 34 is replenished with the used coating materials as needed. If necessary, the painted panels 7 are dried by infrared rays or the like while they are being moved and then sent out.

In FIG. 4 showing another embodiment, the brush roll 9 and the supply roll 17 are both rotated counterclockwise and the blade edge plate 29 is rotated counterclockwise.
and guide &62 are installed on the front side, which is exactly opposite to that in Figure 6,
The gap between the edge 32a of the guide plate 32 and the supply roll 17 is adjustable and is normally maintained at about 0.5 mm.
A supply pipe 35 is installed at the upper end of the approach valley between 2m and the supply roll 17.
It opens the door. In this way, the doctor roll 26 can be omitted. In the example, 3
Although the book rolls are arranged in a line perpendicular to the surface of the panel 7, it is of course possible to change the arrangement within the scope of the present invention. Also, the brush rail 9 and the supply roll 17
If the rotation of the brush roll is higher than the rotation of the supply roll, the rotation may be in the opposite direction.

As the present invention is structured as described in detail above, even if the material to be coated is a thin, lightweight plate and is weak, it can be coated without deforming or breaking the material to be coated, making it suitable for mass production coating. It is something. In addition, luxurious thick film design patterns can be formed arbitrarily, and since the coating material flow path is an oven mechanism for coating materials containing aggregate, stable coating is possible at all times without interfering with the flow, and maintenance is extremely easy. It has the characteristics of

[Brief explanation of the drawing]

Fig. 1 is a top view drawing of the equipment of the present invention. Fig. 4 shows a brush roll, a supply roller, and a cutting edge plate. FIG. 7 is a plan view of another embodiment of the guide plate. 2...Rail 5...Chain 7...Material to be coated 9...Brush roll 17...
Supply roll 23... Doctor roll 29... Cutting edge plate 32... Guide plate 36... Supply pipe 34...
・Storage tank 36...Pressure pump 39...Recovery tank 4
6... Suction pump

Claims (3)

[Claims] (1) A transport member that hangs and moves the material to be coated in a row in the width direction, and a transport member that is tilted in a plane parallel to the painted surface of the material to be coated at a required distance in front of the hung material to be coated. and a brush roll having a length necessary to coat the entire width of the upper and lower sides of the material to be coated, in which long wire rods made of an elastic material are rotatably planted in a radial manner, and the brush is arranged opposite to the material to be coated. A supply roll that is rotatably provided in parallel with and in contact with the rule, a means for supplying the coating material to the supply roll, and a thickness of the coating material supplied to the supply roll when it is sent to the brush roll side. a cutting edge plate whose edge is parallel to the painted surface of the material to be painted, contacts the brush roll in a tangential direction to the outer circumference, and is provided at an angle to the painted surface of the material to be painted; and the brush roll. and a drive means for rotating the supply roll in the same direction or in the opposite direction as the brush roll. Painting material spraying equipment used. (2) The coating device for spraying coating material using centrifugal force according to claim 1, wherein the coating material supply roll has circumferential grooves cut on its surface. (3) The coating material spray coating device using centrifugal force according to claim 1, wherein the regulating means is a roll. (41) The centrifugal force-utilizing coating material spraying coating device according to claim 1, wherein the regulating means is a plate.