JPH10174907A - Multicolor coating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multicolor coating device which can blend colors and carry out the coating in a desired manner. SOLUTION: A plurality of coating guns are provided on respective supporting sections communicated with respective feed sections while being rotated and on end mouth sections communicated with respective supporting sections and also with respective flowing lines of a rotating passage component 2 having respective flowing lines in the direction along the axial center, and end mouth sections of the flowing lines for atomizing air for a coating material are connected with a plurality of coating guns 41 -43 in common, and a motor for rotating the rotating passage component and an encorder 6 for sensing the rotating speed and rotating angle are provided, and coating material feed pumps 81 -83 and coating material feed amount control valves 91 -93 are provided between respective coating material feed sections 1a1 -1a3 and respective coating material tanks 71 -73 of fixed components 1 and 1'. Also air feed amount control valves 111 -113 and 11c are provided between respective coating material jet control air feed sections 1b1 -1b3 as well as an atomizing air feed section 1c of the fixed components 1 and 1' and a compressor 10, and the control of the rotation speed of the motor and the operations of jetting and stopping and also the control of the amount of the coating material out of a coating gun are carried out following a program stored in a controller.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multicolor coating apparatus for coating an object to be coated (work) while rotating a coating gun, and more particularly to spraying / stopping and sending paint from a coating gun. The present invention relates to a multi-color coating apparatus capable of controlling a quantity, an air delivery amount, and the like according to a program stored in a control device equipped with a computer so that a desired color of a paint to be applied to an object to be coated can be applied. Things.

[0002]

2. Description of the Related Art The same applicant as the applicant of the present invention has previously described "Rotation Joint for Painting (July 2-40)
No. 387), a “painting device having a plurality of rotary joints (Japanese Utility Model Publication No. 2-40388)”, and a “rotating joint for painting (Japanese Utility Model Application No. 4-44955)”. Has been disclosed.

[0003]

The prior art disclosed as described above can provide a certain function and effect. However, the present invention is a further development of the above prior art, and the present invention is not limited to this. It is an object of the present invention to provide a multi-color coating apparatus which can mix a desired color of a coating material to be applied to an object.

[0004]

In order to solve the above problems, the present invention provides a plurality of paint supply units 1a ₁ , 1a ₂ , 1
a ₃ and a plurality of paint supply control air supply units ₁ b ₁ , 1
b _2, 1b ₃ and the coating material atomizing air supply unit 1c provided on the fixed member 1, 1 ', each receiving part 2a ₁ which communicates with the respective supply parts while _{rotating, 2b 1, 2a 2, 2b} 2 , 2a ₃ ,
2b _3, 2c each of the flow channels 2d in the direction along the communicating axis in each receiving portion of Toko, 2e, 2f, 2g, 2h , 2i, 2j and 2d ', 2e', 2f ' , 2g', 2h ', 2i ',
2j 'is provided, and the front end portions 2k, 2m, 2 communicating with the respective flow passages of the rotary passage member 2 are provided.
hoses 3a ₁ , 3b ₁ , n, 2o, 2p, 2q, 2r
A plurality of coating guns 4 ₁ , 4 ₂ , 4 ₃ are connected via 3a ₂ , 3b ₂ , 3a ₃ , 3b _3, and a plurality of coating guns 4 ₁ , 4 ₂ , 4 ₃ are commonly connected via a hose 3c. The fixed member 1 is connected to the leading end 2r of the air passage 2j 'for atomizing the paint, and a motor 5 for rotating the rotation passage member 2 and an encoder 6 for detecting a rotation speed and a rotation angle are provided. , paint supply unit 1a ₁ of 1 ', 1a _2, 1a ₃
A paint tank 7 _1, 7 _2, 7 ₃ paint delivery pump ₈₁ between, 8 _2, 8 ₃ and paints transmission amount control valve 9 _1, 9
_2, 9 ₃ provided, each paint outlet control air supply unit 1b ₁ of the fixing member 1, 1b _2, 1b ₃ and air transmission amount control valve 11 ₁ between the air supply unit 1c and compressor 10 for atomization of the paint , 11 ₂ , 11 ₃ , 11c are provided, and the motor 5, the encoder 6, the paint delivery amount control valves 9 ₁ , 9 ₂ , 9 ₃ and the air delivery amount control valves 11 ₁ , 1
1 _2, 11 _3, constituted by connecting the 11c to the controller 12 which includes a computer, the rotational speed of the motor 5 in accordance with a program stored in the control unit 12 controls and spray gun 4 _1, 4 _2, 4 ₃ Paint supply amount control valves 9 ₁ , 9 ₂ , 9 for controlling the injection / stop of the paint and the ejection amount
₃ and air delivery amount control valves 11 ₁ , 11 ₂ , 11
₃ , 11c is a multi-color coating apparatus configured to control.

Further, the rotation passage member 2 is connected to a lower portion 2 _1.
Phase and divided into an upper part 2 _2, ends of the plurality of spray gun 4 ₁ of the lower part 2 _1, 4 _2, 4 ₃ and a lower end connected to the opposite side, the diameter from the outer periphery of the cylindrical member The protrusions 2t are formed in the convex ends 2t having the steps 2s, and the flow passages 2f ', 2g', 2 are formed in the respective steps 2s in the direction along the axis.
h ', 2i', to form a 2j ', the lower part 2 ₁ of the upper part 2 _{and second} end portions to be fitted and connected to the convex end 2t is stepped portion to reduce the diameter stepwise from the outer peripheral portion 2u, a flow passage 2f, 2g, 2h, 2i, 2j is formed in each step 2u in a direction along the axis, and the convex end 2t and the concave end 2v are formed. Are fitted and connected to form a rotary passage member 2.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a multicolor coating apparatus according to the present invention will be described below in detail with reference to the drawings. FIG.
FIG. 1 is a schematic view of a multicolor coating apparatus of the present invention, and FIG. 2 is an enlarged view of a mechanism of the multicolor coating apparatus. In these figures, reference numerals 1 and 1 'denote fixing members, and as shown in FIGS. 3 and 4, first, second and third paint supply units 1
a ₁ , 1 a ₂ , 1 a ₃ , first, second, and third paint blowing control air supply units ₁ b ₁ , ₁ b ₂ , ₁ b ₃ and a paint atomization air supply unit 1 c are provided. First paint supply unit 1
fixing member 1 a ₁ is provided 'has a rotary joint.

Reference numeral 2 denotes a rotation passage member, as shown in FIGS. 1, 2 and 4, so that the upper end thereof is rotatable into the fixing members 1 and 1 'so that fluid flows from the fixing members 1 and 1'. It is connected, first the lower end, second, and third spray gun 4 _1, 4 _2, 4 ₃ are connected. The rotary passage member 2 is divided into a lower portion 2 ₁ and the upper part 2 _2, a plurality of spray gun 4 ₁ of the lower part 2 _1, 4 _2, 4 end opposite to the ₃ connected to lower end portions, As shown in FIG. 3A, the diameter is gradually reduced from the outer peripheral portion of the cylindrical member to form a convex end 2t having a step 2s, and a direction along the axis of each step 2s. Flow passages 2f ', 2g', 2h ', 2
i ', 2j' is formed and the lower part 2 _{of the} projecting end portion 2t
The upper portion 2 _second end which is fitted and connected is shown in FIG. 3 in (b)
As shown in the figure, the diameter is gradually reduced from the outer peripheral portion to form a concave end portion 2v having a stepped portion 2u, and the flow passages 2f, 2g, 2h, 2
i, 2j are formed, and the convex end 2t and the concave end 2v are fitted and connected to form the rotary passage member 2. Each of the flow passages formed in each of the steps 2s and 2u of the rotary passage member 2 in the direction along the axis is formed by piercing small holes in the direction along the axis at predetermined intervals in a circumferential shape. ing.

The lower part 2 constituting the rotation passage member 2
The convex end 2t formed on _one of the upper end, the concave end portion 2v formed at the lower end of the upper part 2 ₂ fitted connection, the concave end portion 2
When the convex end of the outer periphery of v is fitted and connected to the fixing member 1 shown in FIG. 3 (c), as shown in FIG.
A plurality of paint supply units 1a ₁ , 1a ₂ , 1a ₃ and a plurality of paint blow control air supply units 1b ₁ , 1b ₂ , 1b _{3 are provided.}
And the atomizing air supply unit 1c are connected to the flow passages 2d, 2e, 2f, 2g, 2h, 2i, 2j and 2d ', 2e', 2f ', 2g', 2h ', 2i' of the rotary passage member 2. ,
The communication is made while rotating to 2j '.

The lower part 2 constituting the rotary passage member 2
₁ and the upper portion 2 _second center hole, as shown in FIGS. 4 and 5, when passing the pipe 13, the upper end portion of the center hole first paint supply unit 1a ₁ and the receiving portion of the pipe 13 2a ₁ and next passage 2d communicating, next passage 2e communicating with the receiving portion 2b ₁ is between the outer and the inner periphery of said rotary passage member 2 of the upper part 2 ₂ of the center hole of the pipe 13, the pipe 13 has an outer periphery of the said passage 2e which between the rotary passage member inner periphery of the second lower part 2 ₁ of the central hole communicating with the flow passage 2e '. The center hole of the pipe 13 located in the central hole of the lower part 2 ₁ has a flow passage 2d 'that communicates with the passage 2d.

The lower part 2 constituting the rotation passage member 2
_As shown in FIG. 5, the lower end of ₁ is gradually reduced in diameter toward the lower end, and the flow passage 2j 'at the large diameter position
Is provided directly on the outer periphery of the rotary passage member 2 to close the front end of the large-diameter flow passage 2j 'and communicate with the flow passage 2i' located at the next diameter. A ring member 2q 'having a distal end portion 2q is fitted and provided, and the ring member 2q' closes the distal end of the flow passage 2i 'and communicates with a flow passage 2h' located at the next diameter. A ring member 2p 'having 2p is fitted and provided, and the ring member 2p' has a distal end opening 2o which closes the distal end of the flow passage 2h 'and communicates with a flow passage 2g' located at the next diameter. A ring member 2n having a distal end portion 2n which covers the distal end of the flow passage 2g 'and communicates with a flow passage 2f' located at the next diameter of the ring member 2o '. ' A ring member 2m 'having a distal end portion 2m for closing the distal end of the flow passage 2f' and communicating with a flow passage 2e 'located at the next diameter is fitted to the member 2n', and the ring member 2m 'is provided. In addition, a ring member 2k 'having a distal end opening 2k which closes the distal end of the flow passage 2e' and communicates with the flow passage 2d 'in the center hole of the pipe 13 is fitted and provided sequentially. In the drawing, a plurality of each of the distal end portions is provided, but the distal end portion which is not used is appropriately closed.

As shown in FIGS. 1 and 2, for example, the base ends of three arms 14 are fixed to the rotation passage member 2 at equal intervals.
The second and third coating guns 4 ₁ , 4 ₂ , 4 ₃ are mounted so as to be able to adjust the spray angle of the paint.
_1, 4 _2, 4 ₃ the hose 3a _1, 3b _1, 3a _2, 3b
_2, 3a _3, 3b of the rotary passage member 2 so ₃ through the distal end opening portion 2k, 2m, 2n, 2o, 2p, with 2q is connected, the spray gun 4 _1, 4 _2, 4 ₃ The air passage 2j 'for atomizing paint through a hose 3c
Is connected to the distal end port 2r that communicates with.

A motor 5 for rotating the rotary passage member 2 is mounted on a machine frame 15 which is a fixed member. A belt 17 is provided between a pulley 5a of the motor 5 and a pulley 16 mounted on the rotary passage member 2. It is hung. Reference numeral 6 denotes an encoder for detecting the rotation speed and rotation angle of the rotation passage member 2. As is well known, the encoder 6 attaches a circular plate 6a provided with a large number of through holes at equal intervals on the circumference to the rotation path member 2, and connects the light emitting element with the light emitting element so as to sandwich the through hole of the circular plate 6a. Photoelectric member 6b with light receiving element facing
Are arranged. Note that, in addition to the large number of through holes, one through hole for obtaining a reference signal is provided at a position different from the circumference.

Each of the paint supply sections 1a ₁ , 1a,
Paint delivery pump 8 _1, 8 _2, 8 ₃ and paints transmission amount control valve 9 _1, 9 _2, 9 ₃ is provided between the 1a _2, 1a ₃ and the paint tank 7 _1, 7 _2, 7 ₃ . The paint delivery amount control valve is an electromagnetic valve, and its opening and closing control is rapidly performed electrically. Air delivery control valves 11 ₁ , 11 ₂ , 11 ₃ , 11 c are provided between the paint supply control air supply units ₁ b ₁ , ₁ b ₂ , ₁ b _{3 of the} fixing member 1, the atomization air supply unit 1 c and the compressor 10. The motor 5, the encoder 6, the paint delivery control valves 9 ₁ , 9 ₂ , 9 ₃ and the air delivery control valves 11 ₁ ,
11 _2, 11 _3, by connecting the 11c to the controller 12 which includes a computer multicolor coating apparatus is constituted.
Reference numerals 18 shown in FIG. 4 denote bearings which rotatably support the rotation passage member 2 on the fixed member 1. Although not shown in detail, a seal member is provided at a portion where the rotation passage member 2 and the fixed member 1 are in sliding contact with each other.

Since the multicolor coating apparatus of the present invention is constructed as described above, as shown in FIGS. 1 and 6, the workpiece W (work) is moved counterclockwise by the transport means. spray gun which rotates 4 _1, 4 _2, 4 pass ₃ of the lower right-to-left. At this time, by the program stored in the control unit 12 provided with the computer, spray gun 4 ₁ injected simultaneously coating passes through the one side edge w ₁ of an object to be coated W to the object to be coated W, the object to be coated At the same time passes through the other side edge w ₂ of W stops injection of paint, also,
The other side edge w ₂ 'injected when passing simultaneously paint to the object to be coated W, and one side edge w ₁ of the object to be coated W' stops at the same time the injection of the coating material passes through the coating gun 4 ₂ coating object W And also
The other side edge w ₂ 'injected when passing simultaneously paint to the object to be coated W, and one side edge w ₁ of the object to be coated W' stops at the same time the injection of the coating material passes through the paint gun 4 ₃ coating object W So that the paint delivery control valves 9 ₁ , 9 ₂ , 9 ₃ and the air delivery control valves 11 ₁ , 11 ₂ , 11 ₃ , 11
c is controlled according to a program stored in the control device 12.

In addition to controlling the spraying and stopping of the paint such that the spraying of the paint of the paint gun is performed only on the workpiece W as described above, the selection of the paint gun for performing the spraying operation of the paint is controlled. By controlling according to the program stored in the device 12, it is possible to perform a single-color coating or to mix two primary colors or two primary colors to perform the coating.

In addition to the control of the spraying and stopping of the paint such that the spraying of the paint of the coating gun is performed only on the workpiece W, the paint delivery amount control valves 9 ₁ , 9 ₂ , and 9.
9 ₃ and air transmission amount control valve 11 _1, 11 _2, 11 ₃
By controlling the air supply amount control valve 11c for atomization according to a program stored in the control device 12, it is also possible to apply a pattern such as granite.

[0017]

According to the first aspect of the present invention, a plurality of paint supply units, a plurality of paint blowing control air supply units, and an air supply unit for atomizing paint are provided on a fixed member, and each of the supply units is rotated. A rotation passage member provided with each receiving portion communicating with the portion and each flow passage in a direction along the axis in communication with the receiving portion, and a hose is provided at a tip end portion of the rotation passage member communicating with each of the flow passages via a hose. A motor that rotates the rotating passage member and a motor that rotates the tip of the air passage for the atomization of paint through a hose, and a rotating speed and rotation. An encoder for detecting an angle is provided, a paint delivery pump and a paint delivery amount control valve are provided between each paint supply unit of the fixed member and each paint tank, and each paint blowing control air supply unit and the paint of the fixed member are provided. Atomization air The air transmission amount control valve provided between the supply and the compressor becomes to connect the motor and encoder and paint transmission amount control valve and the air transmission amount control valve in the control device provided with a computer,
In order to control the rotation speed of the motor and control the spraying / stopping of the paint from the paint gun and the amount of the sprayed out according to the program stored in the control device, the control unit controls the paint delivery amount control valve and the air delivery amount control valve. Since the color coating device is used, the paint delivery amount control valve, the air delivery amount control valve, and the air delivery amount control valve for atomization are controlled according to a program stored in the control device, so that only on the workpiece W to be coated. In addition, it is possible to perform a single-color coating, mix the colors and perform the coating, or perform a coating such as a granite pattern.

According to a second aspect of the present invention, the rotary passage member is divided into a lower portion and an upper portion, and a lower portion of the lower portion opposite to a lower end to which a plurality of coating guns are connected is formed of a cylindrical material. The diameter is gradually reduced from the outer peripheral portion to form a convex end portion having a step portion, and a flow passage is formed in each of the step portions in a direction along the axis, and the lower end portion is fitted and connected. The end of the upper portion to be formed has a concave end having a step by decreasing the diameter stepwise from the outer peripheral portion, and forms a flow passage in the direction along the axis at each of the steps, Since the rotating end member is configured by fitting and connecting the convex end and the concave end, a plurality of paint supply units, a plurality of paint blowing control air supply units, and a paint atomization air supply unit provided on the fixed member are provided. Each of the receiving portions communicates with each of the supply portions while rotating, and the fluid flowing through each of the receiving portions is provided along the axis. It is possible to manufacture the rotary passage member to flow in the passage relative ease.

[Brief description of the drawings]

FIG. 1 is a schematic view of a multicolor coating apparatus according to the present invention.

FIG. 2 is an enlarged view of a mechanism of the multicolor coating apparatus.

FIG. 3 is an exploded cross-sectional view of a rotation passage member and a fixing member.

FIG. 4 is a sectional view in which a rotation passage member and a fixing member are assembled.

FIG. 5 is a sectional view of a lower end portion of the rotation passage member.

FIG. 6 is a view for explaining coating on an object to be coated by the multicolor coating apparatus of the present invention.

[Explanation of symbols]

Reference Signs List 1 fixing member 1 'fixing member 1a ₁ paint supply section 1a ₂ paint supply section 1a ₃ paint supply section 1b ₁ paint blow control air supply section 1b ₂ paint blow control air supply section 1b ₃ paint blow control air supply section 1c atomization Air supply unit 2 Rotary passage member 2 ₁ Lower part 2 ₂ Upper part 2a ₁ receiving part 2b ₁ receiving part 2a ₂ receiving part 2b ₂ receiving part 2a ₃ receiving part 2b ₃ receiving part 2c receiving part 2d, 2d 'flow path 2e, 2e 'flow path 2f, 2f' flow path 2g, 2g 'flow path 2h, 2h' flow path 2i, 2i 'flow path 2j, 2j' flow path 2k Tip opening 2k 'Ring member 2m Tip opening 2m' Ring member 2n Tip mouth 2n 'Ring member 2o Tip mouth 2o' Ring member 2p Tip mouth 2p 'Ring member 2q Tip mouth 2q' Ring member 2r Tip mouth 2s Step 2t Convex end 2u Step 2v Concave end 3 ₁ Hose 3a ₂ hoses 3a ₃ Hose 3b ₁ Hose 3b ₂ Hose 3b ₃ hose 3c hose 4 ₁ spray gun 4 ₂ coating gun 4 ₃ coating gun 5 Motor 5a pulley 6 encoder 6a disc 6b photoelectric member 7 _first paint tank 7 ₂ Paint Tank 7 ₃ Paint tank 8 ₁ Paint delivery pump 8 ₂ Paint delivery pump 8 ₃ Paint delivery pump 9 ₁ Paint delivery amount control valve 9 ₂ Paint delivery amount control valve 9 ₃ Paint delivery amount control valve 10 Compressor 11 ₁ Air delivery amount control valve 11 ₂ Air delivery control valve 11 ₃ Air delivery control valve 11c Air delivery control valve 12 Controller 13 Pipe 14 Arm 15 Machine frame 16 Pulley 17 Belt 18 Bearing

Claims (2)

[Claims] 1. A plurality of paint supply units, a plurality of paint supply control air supply units, and a paint atomization air supply unit are provided on a fixed member, and each receiving unit communicates with each supply unit while rotating. A rotation passage member provided with each flow passage in a direction along the axis in communication with the shaft is provided, and a plurality of coating guns are connected via a hose to a distal end portion of the rotation passage member which communicates with each of the flow passages. A common motor is connected to a plurality of coating guns via a hose to connect the leading end of the air passage for atomizing paint, and a motor for rotating the rotation passage member and an encoder for detecting the rotation speed and rotation angle are provided. A paint delivery pump and a paint delivery amount control valve are provided between each paint supply unit and each paint tank of the fixed member, and each paint blowout control air supply unit and paint atomization air supply unit of the fixed member and a compressor. With The air transmission amount control valve provided,
The motor, the encoder, the paint delivery amount control valve and the air delivery amount control valve are connected to a control device equipped with a computer, and control of the rotation speed of the motor and paint from the paint gun according to a program stored in the control device. A multicolor coating apparatus characterized by controlling a paint delivery amount control valve and an air delivery amount control valve to control the spraying / stopping and the ejection amount. 2. The rotating passage member is divided into a lower portion and an upper portion, and a lower portion of the lower portion, which is opposite to a lower end to which a plurality of coating guns are connected, has a stepped diameter from the outer peripheral portion of the cylindrical member. A convex end portion having a stepped portion, and a flow passage formed in each of the stepped portions in a direction along the axis, and an end portion of an upper portion fitted and connected to the convex end portion of the lower portion. Forming a concave end having a step by reducing the diameter stepwise from the outer peripheral portion, and forming a flow passage in a direction along the axis in each of the steps,
2. The multicolor coating apparatus according to claim 1, wherein the convex end and the concave end are fitted and connected to each other to form a rotary passage member.