JP2811506B2 - Painting equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a coating apparatus suitably used for coating, for example, a body of an automobile.

[Conventional technology]

2. Description of the Related Art Generally, a coating apparatus for coating a body of an automobile as an object to be coated includes a conveyor for transporting the body, and an upper surface (horizontal plane) which is a plane of a roof, a hood, a trunk, and the like among the bodies transported by the conveyor. A first coating machine for coating, a second coating machine for coating front and rear end surfaces (vertical surfaces) which are front and rear end faces of the body, and a first coating machine for straddling the conveyor;
A first reciprocator having a function of oscillating (rotating) an upper, lower, left, right direction and an air cylinder to move the coating machine; and the second coating machine, which is provided so as to straddle the conveyor. And a second reciprocator having a function of moving the machine up, down, left, and right.

That is, the body conveyed by the conveyor is the first and second
When passing through the inside of the reciprocator, the first reciprocator coats the upper surface of the body with the first coating machine, and the second reciprocator coats the front and rear surfaces of the body with the second coating machine. It is designed to be painted.

[Problems to be solved by the invention]

By the way, in the above-mentioned conventional coating apparatus,
In order to have two painting machines, a first painting machine for painting the horizontal surface of the body and a second painting machine for painting the vertical surface of the body, two separate reciprocators must be installed, respectively. In the painting booth, the occupied area of the painting equipment is increased, the conveyor length is increased, and more than one painting machine is used. Is very high.

The present invention has been made in view of the above problems of the prior art,
It is an object of the present invention to provide a coating apparatus capable of coating a horizontal surface and a vertical surface of an object to be coated with one coating machine.

[Means for solving the problem]

In order to solve the above-described problems, a configuration adopted by the present invention includes a conveyor for transporting an object to be coated, guide posts provided leftward and rightward along a transport direction of the conveyor, and each of the guide posts. , And left and right front and rear moving columns that move in the front and rear (ZZ) directions, and vertical moving columns that are provided between the front and rear moving columns and move in the upper and lower (XX) directions. A left and right moving bracket provided on the vertical support and moving in the left and right (Y-Y) directions; an air motor attached to the left and right moving bracket;
A coating machine for spraying the coating on the horizontal and vertical surfaces of the object to be coated by being driven in the R) direction.

Further, an air clutch may be provided between the air motor and the coating machine to hold the coating machine at a predetermined angle.

[Action]

With the above configuration, the angle of the coating machine can be easily set by the air motor, and the function of following the coated object can be achieved by the back and forth moving columns, the vertical moving columns, and the left and right moving brackets while the vibration of the coating machine is suppressed by the air clutch. So that the entire surface of the object to be coated can be coated.

〔Example〕

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 4. In this embodiment, a body of an automobile will be described as an example of the object to be coated.

In the drawings, reference numeral 1 denotes a coating apparatus according to an embodiment of the present invention, and 2 denotes a conveyor for moving a conveyor 2A in a direction indicated by an arrow A (hereinafter, referred to as “transfer direction A”). 2), the vehicle body 3 as an object to be coated provided on the transfer table 2A is moved in the transfer direction A.

Reference numerals 4 and 4 denote a pair of guide posts which are installed in parallel to the left and right directions along the conveying direction A of the conveyor 2 and are formed in a gate shape by prisms. 4 is a column 4A, 4A extending in the vertical direction, an upper connecting column 4B in which the distal end side of each column 4A is connected by means such as welding, and an intermediate portion of each column 4A is connected by means such as welding. And a rail groove (not shown) formed on the upper side of each of the connecting columns 4B and 4C. The base end side of each of the columns 4A has a large-diameter fixing portion 4A ₁
There is formed, which is solidly fixed to the installation location of the coating apparatus 1 of the respective fixing portions 4A ₁ by bolts (not shown) or the like.

Reference numerals 5 and 5 denote a pair of front and rear moving columns provided in a position between the guide columns 4 and formed in a rectangular prism shape,
The upper connecting column 4B and the intermediate connecting column 4C of each guide column 4 are located above and at an intermediate position on the outer side surface of each of the front and rear moving columns 5.
Sliding portions 5A, 5A to be held in the upper rail groove are respectively protruded, and a sliding hole 5B for moving vertically moving support 6 described later from upper side to lower side in upper and lower (XX) directions is provided on the inner side surface. Has been drilled. A forward / backward moving device (not shown) constituted by a drive motor or the like is mounted in the sliding portion 5A of each of the forward / backward moving columns 5, and the forward / backward moving device interlocks with the transport speed of the conveyor 2 or the like. Each slide part is driven to rotate or driven independently of the conveyor 2.
By sliding 5A on the rail groove of each upper connecting column 4B and each intermediate connecting column 4C in the front and rear (ZZ) directions,
Each of the back-and-forth moving columns 5 is moved in parallel in the front and rear (Z-Z) directions.

Numeral 6 denotes a vertical moving column which has both ends inserted into the slide holes 5B of the front and rear moving columns 5 and is provided so as to connect the front and rear moving columns 5 to each other. A slide hole 6A is provided for moving a left and right movement bracket 7 described later in the left and right (Y-Y) directions. Both ends of the vertical moving column 6 are connected to a part of a chain of a vertical moving device (not shown) composed of a drive motor, a chain, a sprocket, etc., housed in each of the front and rear moving columns 5. By operating the moving device, both ends of the vertical support 6 are moved up and down (XX) in parallel, and the vertical support 6 is moved up and down (XX). The vertical support 6 follows the front, rear, and inclined surfaces of the body 3.

Reference numeral 7 denotes a left-right movement bracket provided in a slide hole 6A of the vertical movement support column 6. The left-right movement bracket 7 protrudes from the slide hole 6A, and includes an L-shaped bracket 7A and a tip of the L-shaped bracket 7A. Plate bracket 7B fixed to the side by welding or the like, and a speed reducer 12 described later, which is fixed to the distal end side of the plate bracket 7B by bolts (not shown) or the like.
(See FIG. 2). The left-right moving bracket 7 is connected to a part of a left-right moving device (not shown) composed of a drive motor, a chain, a sprocket, and the like housed in the vertical moving column 6, and the left-right moving device 7 The left and right (Y-
By moving in the Y) direction, left and right painting is performed on the body 3.

Next, an air motor, a coating machine, and an air clutch provided on the left-right moving bracket 7 will be described with reference to FIGS.

In the figure, reference numeral 8 denotes a plate-shaped bracket of the left-right moving bracket 7.
7B shows an air motor attached to 7B, the air motor 8 is provided on the upper side, and is roughly constituted by an air motor main body 8A rotatable at least in a range of abnormality of 180 degrees and a speed reducer 8B connected to the air motor main body 8A, The speed reducer 8B is connected to the plate-like bracket 7B via washers 8C and 8C made of an elastic material.
It is attached by fixing with bolts (not shown).

Reference numeral 9 denotes a shaft provided below the air motor 8 and connected to a speed reducer 8B. The shaft 9 is provided inside the outer case 9A and the outer case 9A.
A rotating shaft (not shown) connected to the internal gear (not shown), the other end of which is connected to a rotary converter 12 to be described later, and attached to the middle of the rotating shaft and provided outside the outer cylinder 9A. It is roughly composed of an angle detection gear 9B.

Reference numeral 10 denotes an encoder provided between the shaft 9 and the plate-shaped bracket 7B. The encoder 10 includes an encoder body 10A attached to the plate-shaped bracket 7B via the bracket 11, and an encoder body 10A. A gear 10B is provided on the lower surface side and meshes with the angle detecting gear 9B of the shaft 9. And the encoder 1
0 indicates the rotation angle of the rotating shaft of the shaft 9
B, 10B to detect the rotation shaft 13
The rotation angle is detected.

Numeral 12 denotes a rotary converter provided on the front end side of the reduction gear mounting bracket 7C of the bracket 7;
Is connected to the other end of the connection shaft of the shaft 9,
A boss portion 12A is formed on the tip side of the rotary converter 12, and a rotating shaft 13 extending in the horizontal direction is supported in the boss portion 12A. A gun mounting rod 14 to which a pair of coating guns 15 to be described later is mounted is fixedly attached. The rotation converter 12 has a built-in bevel gear mechanism for converting the rotation of the rotation shaft of the shaft 9 into the rotation (R-R) of the rotation shaft 13.

Reference numerals 15 and 15 denote a pair of coating guns as a coating machine provided on the rotary converter 12 via a boss 12A, a rotating shaft 13, a gun mounting rod 14, and a coating gun mounting bracket 16. Is constituted by, for example, an electrostatic air atomizing gun,
A paint nozzle 15A is formed on the tip side, and the paint nozzle 15A
Is directed toward the body 3 to spray the paint. By changing the rotation of the shaft 9 generated by the air motor 8 to the rotation (R-R) of the gun mounting rod 14 via the rotation converter 12, each coating gun 15 is indicated by a dotted line 15 '. Alternatively, it can be finely rotated in the range of the 15 ″ position.

Further, reference numeral 17 denotes an air clutch provided on the other side of the rotating shaft 13 supported by the boss 12A of the rotary converter 12,
The air clutch 17 connects and separates, for example, a clutch plate by supplying and discharging air, fixes the coating gun 15 at a predetermined angle during the coating operation, and prevents the rotation of the rotating shaft 13 in the rotational (R-R) direction. That is, since the rotary converter 12 has a built-in bevel gear mechanism, the bevel gear mechanism has a backlash, and the coating gun 15 shakes, vibrates, and the like due to external vibration when moving at high speed. Since there is a risk of causing the air gun 17, the coating gun 15 is held at a predetermined angle by the air clutch 17, and
Vibration is suppressed.

The coating apparatus 1 of this embodiment is configured as described above. Next, a coating process of the body 3 of the automobile will be described with reference to FIG.
The operation will be described. In FIG. 4, in order to clarify the movement of each component of the coating apparatus 1, the upward movement is + X and the downward movement is + X, and the lower movement is in the upward and downward (XX) directions. In the front and rear (Z-Z) directions of the front and rear movement support 5, the movement to the front side is + Z, the movement to the rear side is −Z, and the rotation of the rotating shaft 13 is −
In the rotation in the R) direction, the paint gun shown in FIG.
15 ') rotation to + R, left direction (painting gun 1 in FIG. 2)
The rotation of 5 ″) is set to −R. Further, the body 3 has a front portion 3A, a bonnet portion 3B, a front glass portion 3C, a roof portion 3D, a rear glass portion 3E, a trunk portion 3F, for easy explanation.
It shall consist of the rear part 3G and the like.

First, the body 3 is placed on the conveyor 2A of the conveyor 2 and travels in the traveling direction A at a predetermined speed. Meanwhile, paint gun 15
It is adapted to position the initial position T ₀ in the initial position. Before the body 3 reaches the coating start position T _A, with the coating of the front portion 3A, moves the vertical movement strut 6 on the lower side (-X side), the front portion 3A of the orientation of the spray gun 15 Rotating shaft 13 so as to face at right angles to the inclination angle of
Is rotated by the air motor 8 and positioned by the air clutch 17.

The spray gun 15 starts painting by spraying the coating material from the spray gun 15 at the same time reaches the coating start position T _A. Incidentally, during the painting start point T _A to the bonnet painting position T _B, the lateral movement bracket 7 left, right (Y-Y) together are moved in the direction, forward along the advancing direction A of the conveyor 2 at the same speed ( + Z side) to move the front and rear moving support 5
While keeping the distance between the 3A and the coating gun 15 constant, the vertical movement support 6 is gradually moved upward (+ X side) along the front section 3A to paint the front section 3A.

On the other hand, painting the gun 15 approaches the bonnet painting position T _B, rotate the orientation of the spray gun 15 includes a paint next bonnet portion 3B to the left (-R side), and the gentle slope of the spray gun 15 Match the inclination of the bonnet part 3B.

When the bonnet painting position T _B is the body 3 reaches, between the bonnet painting position T _B to the windshield unit 3C, while the lateral movement bracket 7 is moved left and right (Y-Y) direction, the conveyor 2 The forward and backward moving strut 5 is moved rearward (−Z side) at a very low speed in the direction opposite to the traveling direction A. In addition, the vertical support 6 is moved upward along the bonnet 3B (+ X
Side) to paint the bonnet 3B.

Next, when the spray gun 15 approaches the windshield coating position T _C, the spray gun comprises a paint next windshield portion 3C
Rotate the direction of 15 to the right (+ R side) so that the inclination of the coating gun 15 is perpendicular to the inclination of the windshield 3C.

When the spray gun 15 reaches the front glass coating position T _C, roof coating position from the front glass coating position T _C
Until T _D is left spray gun 15 by lateral movement bracket 7, the movement of the right (Y-Y) direction lapse movement, and the traveling direction A and reverse direction of the conveyor 2 by moving support 5 before and after the While continuing, the vertical support 6 is gradually moved upward (+ X side) along the inclination of the windshield 3C to paint the windshield 3C.

Further, when the spray gun 15 approaches the roof coating position T _D, rotate the orientation of the next roof spray gun 15 includes a 3D paint on the left (-R side), approximately is horizontally position the spray gun 15 To fit the plane of the roof 3D.

When the spray gun 15 reaches the roof coating position T _D,
Between the roof coating position T _D to the rear glass coating position T _E, the left spray gun 15 by lateral movement bracket 7, right (Y
The painting of the roof 3D is performed while the movement in the −Y) direction and the movement of the conveyor 2 at the very low speed in the direction opposite to the traveling direction A of the conveyor 2 by the front and rear moving support 5 are continued.

On the other hand, when the spray gun 15 approaches the rear glass coating position T _E, by rotating the orientation of the spray gun 15 includes a coating of the next rear glass portion 3E on the left (-R side), rear glass portion the inclination of the spray gun 15 Match so that it is almost perpendicular to the inclination of 3E.

The spray gun 15 reaches the rear glass coating position T _E, between the rear glass coating position T _E to a trunk painting position T _F is the spray gun 15 by lateral movement bracket 7 left, right (Y-Y) direction While continuing the movement and the movement of the conveyor 2 at a very low speed in the direction opposite to the traveling direction A of the conveyor 2 by moving the back and forth moving struts 5, the vertical moving struts 6 are gradually lowered (−X side) along the inclination of the rear glass part 3E. And paint the rear glass part 3E.

Next, when the paint gun 15 approaches the trunk paint position _TF ,
The painting gun 15 is rotated to the right (+ R side) in preparation for painting of the next trunk portion 3F, and the painting gun 15 is positioned substantially horizontally to face the trunk portion 3F.

When the spray gun 15 reaches the trunk painting position T _F, between the trunk painting position T _F to the rear painting intermediate position T _G is left spray gun 15 by lateral movement bracket 7, right (Y-Y) direction The trunk portion 3F is painted while continuing the movement of the conveyor 2 and the movement of the conveyor 2 at a very low speed in the direction opposite to the traveling direction A of the conveyor 2 by the back-and-forth moving support column 5.

Further, when the coating gun 15 approaches the rear coating intermediate position _TG , the coating gun 15 is rotated to the left (-R side) in preparation for the next coating of the rear portion 3G, and is gradually turned vertically to the rear portion. 3G
And so that the inclination is almost the same as the inclination of. On the way, the rear portion 3G is brought into the painting state via the rear painting intermediate position _TG . At the rear coating intermediate position _TG , the movement of the back-and-forth moving prop 5 which has been moving at a very low speed in the direction opposite to the traveling direction A of the conveyor 2 is changed at the same speed in the same direction as the traveling direction A of the conveyor 2. To the front side (+ Z).

When the body 3 reaches the rear coating position T _H, in order to perform the painting of the rear portion 3G, and lateral movement bracket 7 left, while moving to the right (Y-Y) direction, the same as the traveling direction A of the conveyor 2 The front and rear moving support 5 is moved to the front side (+ Z side) at a speed, and while keeping the distance between the rear part 3G and the coating gun 15 constant,
The vertical support 6 is gradually moved downward (−X side) along the rear part 3G to paint the rear part 3G.

As described above, after the painting process of the body 3 is completed, the spraying of the paint from the painting gun 15 is stopped, and the next body 3 is sprayed.
In order to position the paint gun 15 at the initial position T ₀ ,
The vertical support 6 is moved upward (+ X side), and the direction of the coating gun 15 is rotated rightward (+ R side).

Thus, in the present embodiment, since the body 3 is painted as described above, the distance between the painting gun 15 and the body 3 can always be maintained at a constant distance. "Can be effectively prevented.

Further, in this embodiment, a front and rear moving column 5 that moves in the front and rear (ZZ) directions is provided, and a painting gun 15 rotatably mounted on the left and right moving bracket 7 by an air motor 8 is provided. Since the air clutch 17 is used to securely fix the set position, a pair of paint guns 15
The front surface composed of the horizontal plane and the vertical plane of the body 3 can be painted only by the above. Thus, the area occupied by the coating apparatus 1 in the coating booth can be reliably reduced, and the length of the conveyor line can be reduced. Further, the consumption of the paint and the cleaning agent when changing the color of the paint can be reduced, and the painting efficiency can be improved.

Further, the coating gun is moved in a direction opposite to the conveying direction A of the conveyor 2.
Since the coating gun 15 can be moved, the coating gun 15 can reliably follow the shape of the body 3, and the coating time of the body 3 is set only by the transfer speed of the conveyor 2 in the related art. As a result, the coating gun 15 can be moved, so that the coating time for the body 3 can be effectively reduced. Therefore, the workability of the painting work of the body 3 can be significantly improved.

In the above embodiment, a pair of the coating guns 15 is provided, but a single coating gun 15 may be provided, or a large number of the coating guns 15 may be connected in the left and right directions.

Further, in the above embodiment, in the coating process, the body 3
When the horizontal plane is painted, the longitudinal column 5 is moved at a very low speed in the direction opposite to the conveying direction A of the conveyor 2, but when the horizontal plane of the body 3 is painted, the movement of the longitudinal column 5 is stopped, and only the transport speed is reduced. , The front-back (ZZ) direction may be changed.

Furthermore, in the above-described embodiment, the body 3 of the automobile is taken as an example of the object to be coated. Is also possible.

〔The invention's effect〕

As described in detail above, according to the present invention, guide posts provided on both sides of a conveyor for transporting an object to be coated,
Left and right front and rear moving columns which move in the front and rear (ZZ) directions by the respective guide columns, and vertical moving columns which are provided between the respective front and rear moving columns and move in the up and down (XX) directions. A left and right (Y-Y) direction moving bracket provided on the vertical moving support, an air motor attached to the left and right moving bracket, and a rotational (RR) direction driven by the air motor. By being squeezed, a horizontal surface of the object to be coated, and a coating machine for spraying a paint on a vertical surface, it is possible to improve the followability to the object to be coated, the object to be coated by one coating device The entire surface consisting of a horizontal plane and a vertical plane can be reliably coated. Further, it is no longer necessary to separately provide a coating device for coating the horizontal and vertical surfaces of the object to be coated as in the prior art, and the area occupied by the coating device in the coating booth can be reliably reduced, and
The length of the conveyor line can be reduced. Further, at the time of color change, only the paint and the cleaning agent of one coating device are required, and the consumption of the coating material and the cleaning agent can be reduced, so that the coating cost can be surely reduced.

Further, an air clutch is provided between the air motor and the coating machine, and the air clutch is used to position the coating machine at a predetermined angle, thereby preventing blurring of the coating machine and reliably positioning the coating machine. Paint unevenness can be effectively prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view of a coating apparatus showing an embodiment of the present invention, and FIG.
FIG. 3 is a front view showing a left-right moving bracket, an air motor, a paint gun, and the like, FIG. 3 is a side view of FIG. 2, and FIG. 4 is an explanatory view showing a painting process of an automobile body. 1 ... coating device, 2 ... conveyor, 3 ... body, 4 ...
… Guide post, 5… front-back movement support, 6… vertical movement support,
7 ... left and right movement bracket, 8 ... air motor, 15 ... painting gun (painting machine), 17 ... air clutch.

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Kazuaki Teshima 1608-16 Tomizuka-cho, Hamamatsu-shi, Shizuoka (56) References JP-A-63-88073 (JP, A) JP-A-63-88067 (JP, A JP-A-59-4471 (JP, A) JP-A-1-304081 (JP, A) JP-A-1-69661 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) B05B 12 / 00,13 / 00-13/04

Claims (2)

(57) [Claims] 1. A conveyor for transporting an object to be coated, guide posts provided leftward and rightward along the transport direction of the conveyor, and front and rear guides (ZZ) guided by the respective guide posts. ) Direction, left and right moving props, a vertical moving prop provided between the respective front and rear moving props and moving in the upper and lower (XX) directions, and provided on the vertical moving props. A left-right moving bracket moving in the right (Y-Y) direction, an air motor attached to the left-right moving bracket, and a horizontal plane of the object to be coated being driven by the air motor in a rotating (RR) direction; A coating device consisting of a coating machine that sprays paint on vertical surfaces. 2. The coating apparatus according to claim 1, wherein an air clutch is provided between the air motor and the coating machine to hold the coating machine at a predetermined angle.