JPH0618601Y2 - Automatic painting equipment - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic coating device for coating wide objects such as automobile bodies, and more particularly, to a wide object to be coated by simultaneously using two or more coating machines. The present invention relates to an automatic coating device that coats at once.

[0002]

2. Description of the Related Art Conventionally, as a method for automatically coating the outer surface of the upper surface of an automobile body, a method has been adopted in which two or more (usually three) coating machines are used at the same time so that they can be coated at once (JP-A-63-63).
-88067 gazette), recently, in order to make the coating film more uniform, the change in the coating area of the automobile body [bonnet part (large coating width) → roof part (small coating width) → rear trunk part (coating width) It is also performed at the same time as controlling the paint discharge amount and the shaping air by adjusting the mutual intervals of the coating machines according to the above.

Such an automatic coating apparatus is a coating apparatus generally called a "top reciprocating machine", but above the conveying passage of the article to be coated (vehicle body), the width of the article to be coated is box-shaped or the like. A longer elevating frame is arranged, and in addition to multiple coating machines, the elevating frame is equipped with a tilt movement and horizontal movement mechanism for each coating machine, or a space adjustment mechanism between each coating machine. It was a thing. Also,
As a conventional top reciprocating device, as shown in Japanese Patent Laid-Open No. 63-88067, there is also a structure in which an elevating frame having a plurality of coating machines is suspended by an arm so as to be swingable.

Further, the conventional top reciprocating coating apparatus is
A tracking mechanism is provided near the floor surface of the coating booth to follow the transfer of the object to be coated, and the entire device, including the lifting frame and the left and right base frames that support it, can be used to transfer the object to be coated. It had a structure of moving following (Japanese Patent Laid-Open No. 63-88067).

[0005]

[Problems to be Solved by the Invention] This type of automatic coating device is usually installed in an environment designed to allow purified and rectified air to flow downward from above, such as inside a tunnel-type painting booth. Used.

However, in the conventional coating apparatus, the lifting frame is large (occupying a very large area when viewed from above),
Since the flow of air from above is blocked, turbulence of the air flow is caused, and accumulated dust and the like on the elevating frame drop, which often causes defective coating.

Further, in the conventional automatic coating apparatus, since the tracking mechanism moves the apparatus as a whole,
It is very large-scaled, and it is necessary to install equipment for a drive mechanism for that purpose on the floor surface of the coating booth near this device, and there has been a demand for downsizing of these mechanisms and a reduction in installation space.

The present invention has been made in view of the above-mentioned circumstances, and the occurrence of coating defects due to turbulence of the air flow and dropping of accumulated dust is extremely small, and high-quality coating can be reliably performed. In addition, the tracking mechanism etc. is significantly downsized, and the aim is to provide an automatic coating device with improved operability and maintenance workability of the device. The objective is to reduce the number of elements and members that block the air flow, and to mount a tracking mechanism and the like on a lifting platform above the device so that only a tilt box or the like that houses a coating machine or the like can follow.

[0009]

The automatic coating apparatus according to the present invention is provided with two base frames which are erected on the left and right sides of the transfer passage of the object to be coated, and which are respectively attached to the respective base frames so as to be vertically movable. Left and right 2
Two tracking boxes, which are connected to the lifting platform of the stand by a frame, and are movably supported in the conveying direction of the coated object with respect to the two lifting platforms of the left and right, and laid on the left and right platforms, respectively. Two left and right racks, and two left and right pinion gears that mesh with each other on the rack,
The left and right rotary shafts fitted with the gears, the shaft connecting the left and right rotary shafts so that power can be transmitted, and the drive motor in the tracking box for connecting and rotating one of the rotary shafts A tracking mechanism that allows the two tracking boxes to follow each other along the transport direction of the object to be coated, a tilt box that stores multiple coating machines, and two swing arms that are attached to the left and right tracking boxes, respectively. And a swinging mechanism for suspending the tilt box and swinging the tilt box in a direction orthogonal to the transport direction of the object to be coated by rotationally driving the swing arm.

The two base frames are erected on the left and right sides of the transfer path of the object to be coated along the transfer direction, and each of them elevates and lowers an elevating platform extending in the transfer direction, for example, by a combination of a sprocket and a chain. It is installed as much as possible.

The left and right elevating racks support two left and right tracking boxes connected by a frame so as to be movable in the conveying direction of the object to be coated. Therefore, the frame is located immediately above the transport path for the article to be coated, and the two tracking boxes are located outside and immediately above and on the left and right sides, respectively.

Further, the left and right elevating racks each have a rack laid on the upper surface thereof in the conveying direction of the object to be coated,
A pinion gear fitted on the rotary shaft is meshed with each rack. The rotating shaft is fitted on the pinion gear and is also attached to the tracking box. The left and right rotary shafts are coupled by a shaft capable of transmitting power via a universal joint or the like, and one of the rotary shafts is connected to a drive motor of the tracking mechanism. Therefore, the rotational driving force from the drive motor is transmitted to the rotary shaft on the other side through the rotary shaft on either the left or right side and the power transmission shaft, and the left and right rotations can be synchronized. . The drive motor is housed in the tracking box.

Therefore, with such a mechanism, the two tracking boxes on the left and right sides can be made to follow each other in the forward direction or the backward direction together in the conveying direction of the object to be coated.

The two left and right tracking boxes are respectively
A swing arm is rotatably attached, and a tilt box is suspended by two swing arms on the left and right. The apparatus is provided with a drive mechanism for rotating the swing arm, and the tilt box can be swung in the direction orthogonal to the transport direction of the object to be coated by the rotation drive. Such a swing mechanism reciprocally displaces the coating machine mounted on the tilt box in the width direction of the coating.

The tilt box is for accommodating two or more coating machines, usually three coating machines, such that their mutual intervals can be adjusted. The tilt box, as described in the embodiment,
A mechanism for adjusting the interval between the coating machines, a mechanism for detecting the position of the coating machine, a control mechanism, and the like may be provided.

[0016]

In the present invention, instead of the conventional elevating frame, two left and right elevating racks that are separated are used, and a tracking box is movably supported on each elevating rack.
Therefore, above the transport path of the object to be coated, only the frame that connects the left and right tracking boxes, the shaft that allows the two tracking boxes to transmit power to each other, and the tilt box that is hung from the left and right tracking boxes are arranged. Has become. Therefore, this device has a much smaller footprint as viewed from above than the conventional elevating frame for the transfer passage of the object to be coated. , There is much less obstruction of the air flow from above.

Further, according to the present invention, the tracking mechanism is mounted on the lifting platform above the apparatus, and the tilt box equipped with the coating machine is made to follow the movement by the movement of the tracking box according to this mechanism. That is, only the tilt box and the tracking on the left and right sides of the tilt box follow the conveyance of the object to be coated. Therefore, the tracking mechanism and the drive mechanism therefor are extremely miniaturized, and unlike the prior art, it is not necessary to provide a large facility such as a drive mechanism on the floor surface of the coating booth.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the drawings.

FIG. 1 is a front view showing an embodiment of an automatic coating apparatus according to the present invention, and FIG. 2 is a plan view seen from directly above.

The automatic coating apparatus 1 in this embodiment is of a type commonly referred to as a top reciprocating machine, and has a base frame 4 provided upright on both sides of a transfer passage 3 for an object 2 to be coated.
Lifting platforms 5a and 5b are provided on a and 4b, respectively, and the lifting platforms 5a and 5b are mounted on the upper ends of the base frames 4a and 4b.
It is suspended by b and 6b 'via chains 7a and 7b, respectively. Balance weights 8a and 8b are respectively hung on opposite sides of the chains 7a and 7b.
As a result, a balance is maintained with the total weight of the lifting portions including the lifting platforms 5a and 5b. The other chains 9a, 9b extending from the lower end portions of the balance weights 8a, 8b are wound around the sprocket wheels 10a, 10b attached to the lower end portions of the base frames 4a, 4b, and the lower ends of the elevating / lowering stands 5a, 5b are again wound. It is connected back to the section, and is made to have an endless structure as a whole.

A drive sprocket 13 is connected via a chain 12 to a sprocket 11 fixed on the same shaft as the one sprocket 6a, and an explosion-proof drive motor (servo motor) 14 is rotated normally or By reversing, the elevating and lowering stands 5a, 5b can be raised or lowered and stopped at an arbitrary position. On the other sprocket 6a ',
The bevel gear box 15a is connected, and via the power transmission shaft 16 and the bevel gear box 15b,
The rotational driving force is transmitted to the sprocket 6b 'on the opposite side, and the rotation is synchronized. Reference numerals 17 and 17 'are reinforcement frames for maintaining the strength of the base frames 4a and 4b.

Racks 18a and 18b having substantially the same length are laid on the upper surfaces of the elevating and lowering stands 5a and 5b extending in the conveying direction of the object to be coated 2, and the pinion gear 19a is mounted on the racks 18a and 18b. , 19b and the rotary shafts 20a, 20b, the tracking box 21
a and 21b are mounted. Then, the explosion-proof type drive motor (servo motor) 22 in the tracking box 21a is normally or reversely rotated to rotate the pinion gears 19a, 1a.
By rotating the 9b in the normal direction or in the reverse direction, the tracking boxes 21a and 21b can be moved forward or backward along the conveying direction of the article to be coated 2. The rotational driving force of the drive motor 22 is transmitted from the rotary shaft 20a to the rotary shaft 20b on the opposite side via the universal joints 23a and 23b and the power transmission shaft 24, and is transmitted to the pinion gear 19a. The power transmission shaft 24 also serves to transmit the rotational driving force and to synchronize the rotations of both rotary shafts 20a and 20b.

The tracking boxes 21a and 21b are connected by reinforcing frames 25 and 25 ', and
Rollers 26a and 26b are attached to both outer sides thereof, and the rollers 26a and 26b are respectively attached to the elevating platforms 5a and 5b.
It is configured to rotate while slidingly contacting the inner side wall surface of b.
It is designed to reinforce b and maintain lateral stability. When the weight of the tracking boxes 21a, 21b and the like becomes too heavy, rails are laid on the elevating platforms 5a, 5b in parallel with the racks 18a, 18b, and wheels are attached to the tracking boxes 21a, 21b. It is also possible to drive while supporting the weight of the tracking boxes 21a and 21b.

Swing arms 27a and 27b are attached to the tracking boxes 21a and 21b, and bell type electrostatic coating machines 28a, 28b and 28 are attached to the lower ends thereof.
A tilt box 29 to which c is attached is suspended. Each swing arm 27a, 27b swings laterally by rotationally driving the crank drive mechanism 30 installed in the tracking box 21a.

A tilt drive mechanism 31 is mounted on the lower end side of the swing arms 27a, and each swing arm 27 is provided with a tilt drive mechanism 31.
a, 27b on the lower end side of the electrically insulating connecting cylinders 32a, 3
The tilt box 29 hung via the 2b is rotationally moved (tilted) along the tilt axis connecting the central axes of the connection cylinders 32a and 32b, and the bell type electrostatic coating machine 28 is used.
By changing the directions of a, 28b, and 28c, the bell-type electrostatic coating machine 2 is always applied to the inclined coating surface of the object 2 to be coated.
8a, 28b, 28c can be directly faced.
The tilt box 29 is entirely covered with an electrically insulating case, and the bell type electrostatic coating machine 28 is electrostatically repulsed.
It prevents the paint mist from adhering from a, 28b, and 28c, and also prevents the electric charge from being charged and causing an electric discharge to a ground object.

Reference numeral 33 is a carrier truck on which the article 2 to be coated is mounted to run, and 34 is a floor surface of a coating booth constituted by grating or the like.

FIG. 3 is a schematic explanatory view showing a mutual space adjusting mechanism of a coating machine in the automatic coating apparatus of the present invention. Two units are provided in the tilt box 29 connected and supported by the connecting cylinders 32a and 32b. Bell type electrostatic coating machine 28a, 2
Two sliding mounts 35a, 35b mounted with 8b and moving in parallel in mutually opposite directions, rails 36a, 36b slidably supporting the sliding mounts 35a, 35b, and a fluid cylinder (air cylinder) 37. And a center of rotation of the rotating body 38 (rotating shaft)
A coating machine interval adjusting mechanism including two points 40a and 40b located in point symmetry from 39 and two sets of link arms 42a and 42b connecting two ends 41a and 41b of the sliding bases 35a and 35b, respectively. The output code 43 of the alternating binary system rotates in synchronization with the rotating body 38 and follows a plurality of concentric circles.
A rotary plate 44 on which a, 43b, 43c are formed is arranged, and main force cords 43a, 43b, 43c of the rotary plate 44 are arranged.
The light source 45 such as an LED for projecting light toward the rotary plate 4
4 is provided with a position detecting mechanism including a photodetector 46 such as a phototransistor for reading the output codes 43a, 43b, and 43c of the No. 4, and the light projecting unit 4 in the tilt box 29.
7, the light receiving unit 48, the light source 45, and the photodetector 46 are connected by optical fiber cables 49 and 50, respectively.

Further, the amount of working fluid (air) fed to the fluid cylinder (air cylinder) 37 is changed on the basis of a signal from the photodetector 46 to change the bell type electrostatic coating machines 28a, 2a.
A control mechanism including a microcomputer 51 and an electropneumatic converter 52 is provided for adjusting the mutual spacing of the 8b. 53 is a supply source of a working fluid, and air or oil is preferably used as the working fluid.

On the sliding mounts 35a, 35b, in addition to the bell type electrostatic coating machines 28a, 28b, a CCV box in which color change valve groups 54a, 54b are attached to manifolds 55a, 55b is mounted. The paint or thinner applied to each of the color change valve groups 54a and 54b passes through the inside of the left and right connecting cylinders 32a and 32b, and is once relay boxes 56a and 56b in the tilt box 29.
Paint hoses (thinner hoses) 57a, 57b that are attached to the color change valve group and extend from there to the color change valve groups again.
Supplied by the manifolds 55a, 55
It is supplied to each bell type electrostatic coating machine 28a, 28b, 28c via b. Further, an air hose, a high voltage cable, and the like are connected to the connecting cylinder 32 in the same manner as the paint hoses 57a and 57b.
relay boxes 56a, 56b through the inside of a, 32b
And is connected and supplied to each of the bell-type electrostatic coating machines 28a and 28b. The central bell-type electrostatic coating machine 28c is fixed to substantially the center of the tilt box 29, and another bell-type electrostatic coating machine 2 is provided behind the bell-type electrostatic coating machine 28c.
A CCV box (not shown) is attached as in the case of 8a, 28b, and the supply of paint and thinner, as well as the supply of air and high voltage, to other bell-type electrostatic coating machines 28a, 28b are also performed. It is done in the same way as in the case. Of course, a hose 58 for supplying air or oil to the fluid cylinder 37
Optical fiber cable 4 to the light emitting unit 47 and the light receiving unit 48
Various pipe wirings such as 9, 50, etc. are also connected cylinders 32a, 32b
And is introduced into the tilt box 29.

The rear portion of the fluid cylinder 37 is swingably attached to a mount 59 in the tilt box 29, and the tip end of the cylinder rod 60 thereof is the rotating body 3.
It is rotatably attached to the arm portion 61 projecting outwardly. The rotating body 38 can be rotated by expanding and contracting the cylinder rod 60. A rotary plate 44 is coaxially attached to the rotary shaft 39 of the rotary body 38 for synchronous rotation.

FIGS. 4 and 5 are a partially enlarged front view and a side view of the tilt drive mechanism 31 of the automatic coating apparatus according to this embodiment, and the shaft holes 62 are provided at the lower ends of the swing arms 27a and 27a ', respectively. , 62 'are bored, and the rotary shafts 64, 64' fixed to the mount box 63 are inserted into the shaft holes 62, 62 ', and the mount box 63 is rotatably suspended and supported.

A large-diameter bearing bearing 65 is housed inside the mount box 63, one end of the connecting cylinder 32a is inserted therein to rotatably support the tilt box 29, and further the connecting cylinder 32a. A large-diameter sprocket 66 is fixed to the tip of the. 67 is an annular flange for preventing the connecting cylinder 32a from being displaced in the axial direction during rotation. Also, on the mount box 63,
A tilt drive unit consisting of an explosion-proof type inverter motor 68 and a worm gear box 69 is mounted, and a drive shaft 70 protruding from the worm gear box 69.
A drive sprocket 71 is fixed to the tip of the toothed belt 72, and a toothed belt 72 is wound between the drive sprocket 71 and the sprocket 66 attached to the tip of the connecting cylinder 32a.
8 is rotated normally or reversely to rotate the connecting cylinder 32a normally or reversely along its axis through the drive shaft 70, the drive sprocket 71, and the toothed belt 72 sprocket 66, and the tilt box 29 is rotated. ).

On the opposite side of the drive shaft 70 of the worm gear box 69, a rotary position detecting mechanism 73 having a rotary plate similar to that described in FIG. 3 is attached to detect a rotary angle (tilt angle). Inverter motor 68
Can be controlled and adjusted.

Both ends of the connecting cylinder 32a are open, and the paint hose is connected to one end of the connecting cylinder 32a.
All the piping and wiring such as the air hose, high voltage cable, optical fiber cable, etc. are inserted and introduced into the tilt box 29 through the inside of the connecting cylinder 32a, so the piping and wiring are an obstacle during the painting work. Or
There is no chance that dust accumulated on the piping and wiring will fall, resulting in defective painting.

When an electrostatic coating machine is used as the coating machine as in this embodiment, the connecting cylinders 32a and 32b are made of an electrically insulating material such as nylon, Delrin, or fluororesin, so that the tilt A good electrical insulation state can be maintained between the electrostatic coating machine in the box 29 and the swing arms 27a and 27b, and useless leakage current can be suppressed.

Although not shown, the swing arm 27b
The structure of the tilting portion at the lower end of the connecting cylinder 32a is similar to that of the mounting box 63 and the rotating shafts 64 and 64 ', the bearings 65 and the collar 67 of FIGS. It is designed to support the inverter motor 6 unlike the case of FIGS. 4 and 5.
8. No drive mechanism including the worm gear box 69 and the like is provided.

FIG. 6 shows in detail the structure of the rotary plate 44 portion of the position detecting mechanism which has already been described. The rotary plate 44 has, for example, a pattern for forming the output code along a plurality of concentric circles. The opening is formed in the light shielding plate, or a light shielding paint is applied to the light transmitting plate.
Also, the alternating binary output codes 43a, 43b, 43c formed along the plurality of concentric circles of the rotary plate 44 are
A signal “1” (or “0”) indicates that a light beam from the light projecting unit 47 to the light receiving unit 48 in the tilt box 29 passes through the rotary plate 44, and a signal indicates that the light beam is blocked by the rotary plate 44. As "0", eight output code signals 0 having different combinations of the signal "1" and the signal "0" for each divided section obtained by equally dividing each concentric circle into eight with the same radial line.
(0,0,0), 1 (1,0,0), 2 (1,1,
0), ... 7 (0, 1, 1). The rotating plate 44 rotates in synchronization with the rotating body 38, and the alternating binary output codes 43a, 4 according to the rotation amount of the rotating plate 44.
3b and 43c are read by the photodetector shown in FIG. 3 to detect the positions of the bell-type electrostatic coating machines 28a and 28b. Further, depending on the rotation direction of the rotary plate 44, the movement direction of whether the mutual interval between the bell-type electrostatic coating machines 28a and 28b is narrowed or expanded is also detected. The controllable mutual distance between the bell-type electrostatic coating machines 28a and 28b at this time corresponds to an interval obtained by dividing the maximum interval into eight equal parts.

The operation of the automatic coating apparatus 1 of this embodiment will be described. When the object to be coated (vehicle body) 2 mounted on the carrier truck 33 arrives at the coating zone, the elevating racks 5a and 5b are first lowered. Then car body 2
As the bell type electrostatic coating machines 28a, 28b, 28c gradually move up along the outer curved surface of the vehicle, the tilt box follows the rotating movement so that the bell type electrostatic coating machines 28a, 28b, 28c face the painted surface of the automobile body, and the crank drive mechanism 30 causes the swing arm to move. Tilt box 29, that is, bell type electrostatic coating machine 28 via 27a and 27b
While the a, 28b, and 28c are oscillated in a direction perpendicular to the transport direction of the automobile body 2,
The painting work progresses from the front part to the bonnet part. At this time, since the coating width of the bonnet portion is wide, the intervals between the bell-type electrostatic coating machines 28a, 28b and 28c remain wide.

In addition, the racks 18a and 18b laid on the lifting platforms 5a and 5b are mounted on the pinion gears 19a and 19b.
The tracking boxes 21a and 21b are rotated by rotating b.
While performing the forward or reverse tracking traveling in parallel with the conveyance direction of the automobile body 2, the bell-type electrostatic coating machine 28
The a, 28b and 28c are made to follow the painted surface of the automobile body 2 so as to be maintained at proper positions and proper relative speeds.

Next, when the bonnet is painted,
When the roof part is painted, the elevating racks 5a and 5b suddenly rise to the proper positions, and at the same time, the fluid cylinder rod 60 in the tilt box 29 contracts to rotate the rotating body 38 clockwise to move the link arms 42a and 42b. The sliding mounts 35a, 35b are pulled toward each other via the center.
As a result, the mutual distance between the bell-type electrostatic coating machines 28a and 28b mounted on the sliding mounts 35a and 35b is reduced, and the spacing is suitable for coating the roof portion.

At this time, the bell type electrostatic coating machine 28a,
To determine whether or not the distance between 28b has reached an appropriate distance, the alternating binary output code formed on the rotary plate 44 attached to the rear side of the rotary shaft 39 of the rotary body 38 is used as the optical fiber cable 49. , 50 through the light source 45 and the photodetector 46, and collates with the internally registered data in the microcomputer 51. Further, the control for moving the bell-type electrostatic coating machines 28a, 28b until the proper interval is reached is achieved by the electro-pneumatic converter until the read output code matches the coating control data registered in advance in the microcomputer 51. This can be easily performed by controlling the output (air supply amount) of 52 to control the supply amount of the working fluid (air) to the fluid cylinder 37.

When the coating of the roof portion is completed, the elevating and lowering stands 5a and 5b suddenly descend and the coating of the rear trunk portion is started. At this time, the mutual spacing between the bell-type electrostatic coating machines 28a and 28b is the reverse operation to that described above, that is, the cylinder rod 60 of the fluid cylinder 37 is extended and the rotating body 38 is rotated counterclockwise. , Each sliding stand 35
Bell type electrostatic coating machine 28a, 2
The distance between 8b should be wide enough for painting the rear trunk. The interval control at that time is performed by the same procedure as described above.

When all the painting work including the rear trunk portion and the rear portion of the body is completed, the lifting platform 5a,
5b rises to the top and tilt box 29 at the same time
Faces downward, the tracking boxes 21a and 21b return to their original positions, and stand by for the next coating. In addition,
During the standby, each bell type electrostatic coating machine 28a, 28b, 2
8c may be washed and the color may be changed.

In the automatic coating apparatus according to this embodiment, the elevating stand is separated into two bodies 5a and 5b, and only the power transmission shaft 24, the reinforcing frames 25 and 25 'and the tilt box 29 are provided above the article 2 to be coated. Since it has a structure, there are few things that block the air flow from above, and it is extremely unlikely to cause turbulence of the air flow or paint defects due to falling objects such as accumulated dust, so it is possible to use it inside a tunnel-type paint booth, etc. Therefore, it is particularly advantageous for high-quality painting of automobile bodies and the like.

In addition, the tracking mechanism is provided on the lifting platforms 5 and 5.
Since it is mounted on b, and is made to follow the traveling by the tracking boxes 21a and 21b, the tracking mechanism and the drive mechanism therefor are significantly smaller than the case where the entire apparatus is made to follow the traveling like a conventional device. Was converted into
Further, since there is no large-scale mechanism such as a drive mechanism near the floor of the coating booth, the entire apparatus is refreshed and workability such as maintenance is very good.

The bell type electrostatic coating machines 28a, 28b,
All the pipe wiring to 28c etc. are connected cylinders 32a, 3
Since it is introduced and connected through the inside of 2b, the piping and wiring are not obstructed by the movement of the coating device (especially the lifting platform) as in the conventional device, and dust and dust accumulated on the piping and wiring are prevented. Will not fall and cause paint failure.

Various coating machines such as electrostatic type, non-electrostatic type, air atomization type, airless atomization type, rotary atomization (bell) type can be used as the coating machine used in the device of the present invention. , There is no limit.

[0048]

As described above, according to the present invention,
The number of elements and members that block the air flow above the transport passage of the object to be coated is significantly reduced compared to the conventional device, and therefore, the occurrence of coating defects due to turbulence of the air flow and the fall of accumulated dust is extremely low, and high quality is achieved. An effect that an automatic coating device that can reliably perform coating can be provided can be obtained.

Further, the coating apparatus according to the present invention has a structure in which a tracking mechanism or the like is mounted on a lifting platform above the apparatus so that only a tilt box or the like for accommodating the coating machine or the like can follow and run. Therefore, according to the present invention, the tracking mechanism and the drive mechanism therefor can be significantly downsized, and the operation and maintenance workability of the apparatus can be improved.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of an automatic coating device of the present invention.

FIG. 2 is a plan view of the device of FIG. 1 when viewed from directly above.

FIG. 3 is a view showing a mutual gap adjusting mechanism of a coating machine in the apparatus of FIG.

4 is an enlarged front view showing a tilt drive mechanism portion of the apparatus of FIG.

5 is an enlarged side view showing a tilt drive mechanism portion of the apparatus of FIG.

FIG. 6 is an enlarged front view showing a part of the position detection mechanism of the apparatus of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Automatic coating device 2 Object to be coated 3 Transport direction 4a, 4b Base frame 5a, 5b Elevating platform 7a, 7b Chain 18a, 18b Rack 19a, 19b Pinion gear 20a, 20b Rotating shaft 21a, 21b Tracking box 22 Drive motor 24 Power transmission Shaft 25 Frame 26a, 26b Roller 27a, 27b Swing arm 28a, 28b, 28c Bell type electrostatic coating machine 29 Tilt box 30 Crank drive mechanism 31 Tilt drive mechanism 32a, 32b Connection cylinder

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshitaka Naruse 1-9 Kakimoto-cho, Toyota-shi, Aichi Trinity Industries Co., Ltd. (72) Inventor Takeshi Mieno 1 Toyota-cho, Toyota-shi, Aichi Toyota Motor Co., Ltd. (72) Inventor Koji Ota 1 Toyota Town, Toyota City, Aichi Prefecture, Toyota Motor Co., Ltd. (72) Inventor Naoki Yamada 1, Toyota Town, Aichi Prefecture Toyota Motor Company, Ltd. (72) Inventor, Hajime Takeuchi 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor Co., Ltd. (72) Inventor: Tomoaki Iwashita 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. Two base frames which are provided upright on both left and right sides of a passage for transporting an object to be coated, and right and left 2 which are respectively attached to the respective base frames so as to be vertically movable.
Two tracking boxes, which are connected to the lifting platform of the stand by a frame, and are movably supported in the conveying direction of the coated object with respect to the two lifting platforms of the left and right, and laid on the left and right platforms, respectively. Two left and right racks, and two left and right pinion gears that mesh with each other on the rack,
The left and right rotary shafts fitted with the gears, the shaft connecting the left and right rotary shafts so that power can be transmitted, and the drive motor in the tracking box for connecting and rotating one of the rotary shafts A tracking mechanism that allows the two tracking boxes to follow each other along the transport direction of the object to be coated, a tilt box that stores multiple coating machines, and two swing arms that are attached to the left and right tracking boxes, respectively. An automatic coating apparatus comprising: a swing mechanism that suspends the tilt box, and swings the tilt box in a direction orthogonal to a transport direction of a workpiece by rotating the swing arm.