JP2002119896A - Coating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coating apparatus having a structure formed so that coating mist does not splash on a guide driving part of a work carrying device. SOLUTION: The coating apparatus 1 is provided with a housing part 26 formed from a canopy shaped base 28 arranged parallel to the carrying direction of a work W, a 2nd floor surface 231 (bottom plate) provided under the base 28 to be isolated, a side plate 21 (back longitudinal wall) connecting the base 28 to the 2nd floor surface 231 and a front longitudinal wall 255 erected from the 2nd floor surface 231 so as to form an opening part 261 at the lower side of the tip of the base 28 in a coating booth 20. A guide driving part 11 of the work carrying device 10 composed of a work supporting rod 15 having the tip existed to be extended from the opening part 261 to the front side of a coating robot 30 and having the base end part supported by the guide driving part 11 and the guide driving part 11 is housed in the housing part 26.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating apparatus provided with a transfer device for transferring a work in a coating booth, and more particularly to a coating device for preventing paint mist from adhering to a guide driving section of the transfer device.

[0002]

2. Description of the Related Art As shown in FIG. 7, a conventional painting booth 520 is a tunnel-shaped booth surrounded by left and right side walls 521 and a ceiling wall 522. Exhaust device 5 that sucks and exhausts paint mist that has not adhered to the work W below it.
25 are provided. The coating robot 5 is placed on the floor 523 directly or via the bases 527 and 528.
30 are arranged along the left and right side walls 521, and a work transfer device 510 is installed at the center thereof.
The work W is supported on the 10 transfer trays 515 and transferred in front of the painting robot 530.

[0003] In the conventional work transfer device 510, as shown in FIG. 8, chains 5131 are installed on the floor surface 523 of the painting booth 520 at right and left intervals.
The left and right chains 5131 are connected by a plurality of bridge plates 5134 so as to bridge the bridge 31, and a chain conveyor 513 is formed.
5 is attached. The work W is placed on the transfer tray 515 and transferred in the coating booth 520. Therefore, such a work transfer device 51
0 is installed in the painting booth 520.
A snowboard 524 on which the device 10 is placed is required. FIG.
Numeral 518 denotes a drive motor and a speed reducer for driving the chain conveyor 513, and 519 denotes a drive shaft for transmitting the driving force of the drive motor and the speed reducer 518 to the chain conveyor 513.

[0004] The paint sprayed from the paint gun 531 attached to the painting robot 530 is the work W
The mist paint (paint mist) that has adhered to the surface of the work W but has not been applied to the work W is applied to the painting booth 520.
It falls downward due to the internal airflow and its own weight, and is sucked into the exhaust device 525 through the saw blade 524 on the floor 523. In order to quickly discharge the paint mist from the painting booth 520, an airflow is generated by an air conditioner. Therefore, when a painting operation is being performed, the upper painting zone 5201 in the painting booth 520 and the lower painting zone 5201 are formed. The paint mist always flows from the top to the bottom between the exhaust zone 520 and the exhaust zone 5202 by the exhaust device 525 of FIG. Therefore, floor 5
Work transfer device 510 and transfer tray 5
Paint mist adheres to 15 and the snowboard 524 and the like. Unattached paint adhering to the work transfer device 510 or the transfer tray 515 (hereinafter, paint in the state of flying in the air without adhering to the work is referred to as “paint mist”. A scoop 524 is provided on the floor surface 523 to clean the “unapplied paint”.

[0005]

However, when the paint mist adheres to the work transfer device 510, the transfer tray 515, and the saw blade 524 and accumulates on these, the paint mist is removed.
When the inside of the workpiece 20 dries, it flies up as dust and adheres to the painted surface of the work W to cause irregularities on the painted surface, so-called "bubbles", or the work transfer device 51
There has been a problem that the resistance of the rotary sliding portion of 0 is increased to reduce its function. Further, in order to reduce the paint mist, conditions such as the transfer speed of the work W, the paint application pressure of the paint gun 531 and the paint pattern are studied and countermeasures are taken. It was not easy. For this reason, it is necessary to frequently clean the work transfer device 510, the transfer tray 515, and the saw blade 524 to remove unattached paint that has adhered. However, the cleaning of the painting booth requires a lot of manpower and cost, and the maintenance is not easy.

In order to solve the above problem, the present invention provides a structure in which a storage section is provided in a painting booth, in which a guide drive section of a work transfer device is stored, and paint mist is not directly applied to the guide drive section. As a result, it is an object of the present invention to provide a coating apparatus capable of removing an undeposited paint such as a snowboard.

[0007]

SUMMARY OF THE INVENTION A coating apparatus according to the present invention is a coating apparatus for sequentially coating a workpiece conveyed into a painting booth by a workpiece conveying apparatus by a painting robot. An eave-shaped base arranged in parallel with the base, a bottom plate provided below and separated from the base, a deep vertical wall connecting the base and the bottom plate, and an opening formed below the tip of the base Forming a storage section consisting of a front vertical wall standing upright from the bottom plate, a coating robot disposed on the base, and a tip extending forward from the opening of the storage section to the front of the coating robot. The guide drive unit is housed in the housing unit, and the work drive unit includes a work support rod having an end supported by a guide drive unit and a guide drive unit that guides and drives the work support rod in the transfer direction. And

Accordingly, the guide driving unit of the transfer device is accommodated and covered below the base on which the coating robot is mounted, and the work supporting rod is simply extended in the atmosphere where the paint mist is scattered, and is provided at the tip thereof. Since the work is placed via the holder,
It is possible to abolish the saw and other parts on which the guide drive unit is placed, to keep the unpainted parts away from the work, and to reduce the amount of dust that soars due to the air current when the paint booth dries, to the work. It is possible to reduce the defective quality of "buts". In addition, since the guide drive of the transport device is housed and covered below the base on which the coating robot is placed, it is possible to reduce the adhesion of paint mist to the guide drive and extend the life of the guide drive. This makes it possible to extend the frequency of cleaning inside the painting booth.

Further, in the coating apparatus according to the present invention, the work support rod has a holder for supporting a work at a distal end, an upward roller at a base end, and a downward roller between the upward roller and the distal end. And a hook engaged with the driving means between the upward roller and the downward roller. Therefore, the work is supported on the tip of a simple single work support rod, and the load applied to the tip is supported by the front roller and the back roller in a balance-type manner, so that the work can always be supported in a well-balanced manner. The structure of the transfer device can be simply configured.

Further, in the coating apparatus according to the present invention, the guide driving unit is disposed between the guide rail supporting the upward roller of the work supporting rod, the guide rail supporting the downward roller, and the two guide rails. And a driving means for moving the work supporting rod along the guide rail. Therefore, the driving means for driving the work supporting rod can be arranged between the two guide rails, so that the size of the guide driving unit can be reduced in size, and the storage unit is configured to be small, thereby increasing the space for the painting booth. It can be used effectively.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a coating apparatus according to the present invention will be described below with reference to the drawings.
The coating apparatus according to the present embodiment is applied to the coating of vehicle parts. Here, FIG. 1 is a front sectional view of the coating apparatus of the present invention, and FIG. 2 is a front view of a work transfer apparatus applied to the coating apparatus of the present invention. FIG. 3 is a plan view of a work transfer device applied to the coating device of the present invention.

(Configuration) First, the configuration of the coating booth in the coating apparatus of the present invention will be described. The painting booth 20
As shown in FIG. 1, left and right side walls 21 and 21 and a ceiling wall 22 are provided.
The upper part from the floor surface 23 is a coating zone 201, and the lower part is an exhaust zone 202. In the coating zone 201, a plurality of coating robots 30 each holding a coating gun 32 at the tip are disposed so as to face left and right. The painting robot 30 on the left side of FIG.
It is mounted on an A-base 27 installed on the floor surface 23. That is, the A base 27 includes the top plate 271 and the top plate 2
It is a bench-like structure composed of legs 272 projecting downward from 71, and supports the painting robot 30 on the top plate 271 via the rotating pedestal 32 of the painting robot 30. In the case of the A base 27, the size of the coating booth 20 in the longitudinal direction (work transfer direction) may be the same as the number of the coating robots 30 so that the coating robot 30 can be placed.

On the other hand, the B base 28 on the right side of FIG. 1 is provided continuously in the longitudinal direction of the coating booth 20, one end of the B base 28 is fixed to the side wall 21, and the other end is inside the coating booth 20. It is fixed to the side wall 21 by a hanger 281 that extends horizontally and rises obliquely upward from the upper surface. Therefore, nothing protrudes below the B base 28,
The B base 28 is attached to the side wall 21 like an eave.
The coating robot 30 is also placed on the B base 28.

Below the B base 28, a second floor (bottom plate) 231 for connecting the side wall 21 and an inner vertical wall 251 of the exhaust device 25, which will be described later, is provided. 231, the upper end of the inner vertical wall 251 extends so as to form an opening 261 below the front end of the B base 28 to form a front vertical wall 255. The space formed by the vertical wall), the second floor surface 231, and the front vertical wall 255 is used as the storage unit 26, and stores the guide drive unit 11 of the work transfer device 10 described later.

The left and right side walls 21 of the painting booth 20
An air conditioning duct 24 connected to an air conditioner is installed on the ceiling wall 22 so as to form a downward airflow that allows the paint mist to flow into the exhaust zone 202 while keeping the temperature and humidity in the coating zone 201 constant. Has become.

Next, the left and right inner vertical walls 2 parallel to the side wall 21 are formed below the exhaust zone 202 with the floor surface 23 as an upper end.
51 and 251 are provided, and the space between them is connected by an upper plate 252 at a position lower than the floor surface 23, and the lowermost portion is connected by a bottom plate 253 to form a tank. The floor surface 23 is opened by an opening 232 for sucking the paint mist into the exhaust zone 202 in a transfer range of the work W transferred by the work transfer device 10 described later. The lower upper plate 252 is provided with an L-shaped duct 254 for introducing and guiding the paint mist below the transfer range of the work W,
A slight slope is provided to allow the still unpainted paint to flow toward the upper opening of the duct 254.

Further, the lowermost bottom plate 2 of the exhaust zone 202
53 forms an inclined surface descending inward from the inner vertical wall 251, forms a groove at a position where unpainted paint falls from the L-shaped duct 254, collects unpainted paint, and forms a processing tank (FIG. Omitted)
It is configured to be introduced. These inner vertical walls 25
1. The space formed by the upper plate 252 and the bottom plate 253 is the exhaust device 25.

Next, the work transfer device 10 will be described. As shown in FIG. 2, the work transfer device 10 includes a guide driving unit 11 and a work support rod 15. The guide drive unit 11 includes a guide rail 12 and a conveyor 13 as drive means, and is installed so as to be stored in a storage unit 26 formed below a B base 28 provided in the coating booth 20. That is, the storage unit 26
The lower surface of the base 28, the back surface is the right side wall 21, the lower surface is the second floor surface 231 (bottom plate) provided at substantially the same height as the upper plate 252 of the exhaust device 25, and the front surface is the front surface. The upper end of the inner vertical wall 251 of the exhaust device 25 is surrounded by each surface of the front vertical wall 255 extending to the floor surface 23, and an opening 261 is provided between the inner end of the B base 28 and the upper end of the inner vertical wall 251. Is formed.

The guide rail 12 is provided on the second floor surface 231 at a predetermined interval above the back of the storage section 26 at a predetermined interval.
22, an upper rail 121 installed in parallel with the transfer direction of the workpiece W, and an upper rail 121 lower than the upper rail 121;
A lower rail 123 is installed at a position close to the opening 261 by a front support 124 erected at a predetermined interval on the second floor surface 231, and is installed in parallel with the transfer direction of the work W.

The upper rail 121 and the lower rail 12
A conveyor 13 is installed at an intermediate position of the interval 3 in parallel with the work W transport direction. The conveyor 13 is provided with support rails 13 spaced apart with openings having U-shaped cross sections opposed to each other.
2, a chain 131 driven by a drive device (not shown) in the gap between the support rails 132, and a hook 133 attached to the chain 131 so as to protrude upward at a predetermined interval. . The hook 133 is engaged with a hook 155 provided on a bracket 1511 of the work support rod 15 described later, and
The third transfer force is transmitted to the work supporting rod 15.

Next, the work supporting rod 15 will be described. The work support rod 15 supports a holder 154 on which the work W is placed at the tip, a metal pipe rod 151 whose diameter gradually increases from the tip to the base, and supports the base of the rod 151 in front. Bracket 1511
An upward roller 152 provided at the rear end of the bracket 1511; and a downward roller provided in front of the bracket 1511 at the same interval as the interval between the upward roller 152, the upper rail 121 and the lower rail 123. Roller 1
53 and the hook 1 provided between the upward roller 152 and the downward roller 153 and provided on the conveyor 13 described above.
33 and a hook 155 to be engaged.

In the present embodiment, the holder 154 engages a vehicle bumper, which is the work W of the present embodiment, with a leg that rises upward from the tip of the rod 151. The rod 151 and the bracket 1511 support the weight of the work W in a manner that allows the work W to move together with the upward roller 152 with the downward roller 153 provided in the middle as a fulcrum.

Upper rail 121 and upward roller 152
As shown in FIG. 4, the relationship between the upper end of the rear support 122 and the rear end of the bracket 1511 of the work support rod 15 is provided on the lower surface of the upper rail 121 attached with the opening upward through a bracket or the like. The upward roller 152 that rotates on the horizontal axis attached thereto is brought into contact with the guide roller 1521 that rotates on the vertical axis at the upward opening of the upper rail 121.

The lower rail 123 and the downward roller 1
As shown in FIG. 5, the relationship between the work support rod 53 and the downward supporting shaft 53 is provided on the upper surface of a T-shaped lower rail 123 erected on the front support column 124. The roller 153 is brought into contact with the roller 153, and the vertical flange extending from the upper surface of the lower rail 123,
A guide roller 1531 rotating on a vertical axis is abutted from left and right.

The conveyor 13 is provided with the support rail 13 described above.
2 is supported at a predetermined pitch by a U-shaped bracket viewed from the front, which is supported by a reinforcing member extending from the rear support 122 and the front support 124, and the chain 131 is spread in the gap between the support rails 132. The driving force of the chain 131 is transmitted to the work support rod 15 by causing the hook 133 attached to the rod 131 to abut on the hook 155 provided on the bracket 1511 of the rod 151.

The guide drive unit 11 configured as described above is stored in the storage unit 26 provided in the painting booth 20, and the tip of the work support rod 15 is projected from the opening 261 to transfer the work W. Arrange so that it is located at the center of the trajectory. The work supporting rods 15 are arranged at a predetermined pitch on the guide drive unit 11 in accordance with the setting of the capacity of the coating booth 20.

(Operation) The operation of the work transfer device 10 in the coating apparatus 1 of the present embodiment configured as described above will be described. Holds the workpiece W to be painted at the tip 1
The work support rod 15 placed on the work 54 is supported on the lower rail 123 by a downward roller 153 that receives the load of the work W downward, and an upward roller 152 that receives the load of the work W or the like upward at the rear end of the bracket 1511.
And is supported on the lower surface of the upper rail 121 so as to stand in a rotatable manner while maintaining a balance in the form of a toy. Hook 133 moved by movement of conveyor 13 in the transport direction and hook 15 attached to bracket 1511
5 is engaged, and the conveying force of the conveyor 13 is
3. The work W is transmitted to the work support rod 15 via the hook 155, and the work W placed on the work support rod 15 follows the conveyor 13 and moves in the transport direction.

When the work W moves, the painting robot 30 sprays paint from the painting gun 31 to spray the paint on the work W. The atomized paint that has not adhered to the work W becomes a paint mist, is guided by the airflow in the paint booth, falls downward, and falls from the opening 232 of the floor surface 23 to the upper plate 25.
2 and is introduced into the exhaust device 25 and falls on the bottom plate 253. Although the paint mist adheres to the upper plate 252 when passing through the upper plate 252, since the upper plate 252 is separated from the work surface W below the floor surface 23, the snowboard 524 shown in FIG. When the inside of the coating booth 20 dries, undelivered paint that scatters as dust is less likely to reach the workpiece W than the conventional coating booth 520 provided on the same surface as the above.

The paint mist is applied to the work support rod 15
The guide drive unit 1 that is attached to a portion of the lower part of the B base 28 that is exposed from the storage
Since no airflow flows into 1, it hardly adheres.

As described above, the coating apparatus 1 of the present embodiment including the coating booth 20 and the work transfer device 10 for sequentially coating the transferred work W by the coating robot 30 transfers the work W to the coating booth 20. Eave-shaped base 28 arranged in parallel to the direction, a second floor 231 (bottom plate) provided below and separated from the base 28, base 28 and second floor 23
1 and a storage section 26 formed by a front vertical wall 255 erected from the second floor surface 231 so as to form an opening 261 below the front end of the base 28. And a coating robot 30 is arranged on the base 28, and a tip of the coating robot 30 is extended from the opening 261 of the storage 26 to the front of the coating robot 30 in the storage section 26, and the base end is guided and driven. Since the guide drive unit 11 of the work transfer device 10 including the work support rod 15 supported by the unit 11 and the guide drive unit 11 is housed, the paint mist is collected by the mechanical drive unit. The maintenance of maintenance work costs was reduced by extending the life of the guide drive unit and reducing the frequency of cleaning unpainted paint in the painting booth.

Further, since the scraper for mounting the work transfer device below the work W is eliminated and the portion where the paint mist adheres is moved away from the work W, when the coating booth dries, it becomes dust and scatters. It was possible to reduce the quality defect in which the coating material adhered to the work W and became "poor".

Note that the present invention is not limited to the above-described embodiment, and various changes can be made without departing from the gist of the present invention. For example, in the above embodiment,
Although the transfer direction of the work has been described on a straight line, the work transfer direction is not limited to this, and as shown in FIG. It is also possible.

[0033]

According to the present invention, there is provided a coating apparatus for sequentially coating works conveyed into a painting booth by a work conveying apparatus by a painting robot. Base, a bottom plate provided separately below the base, a deep vertical wall connecting the base and the bottom plate, and an upright standing from the bottom plate to form an opening below the tip of the base. A storage section formed from the front vertical wall is formed, and a coating robot is disposed on the base, and a tip of the coating section is extended from the opening of the storage section to the front of the coating robot. Since the guide drive unit is housed in the work transfer device including the work support rod and the guide drive unit whose ends are supported by the guide drive unit, the scrape to which the paint mist adheres is eliminated, and the attached part is moved away from the work. Undelivered paint dust reaches the workpiece Kuku to, it is possible to reduce the bad quality of "fish eyes", to prevent adhesion of the paint mist to the guiding and driving unit, it becomes possible to reduce the cost of cleaning of the spray booth. In addition, it is possible to reduce the failure of the guide drive unit and extend its life.

[Brief description of the drawings]

FIG. 1 is a front sectional view of a coating apparatus according to an embodiment of the present invention.

FIG. 2 is a front view of a work transfer device applied to the coating device according to one embodiment of the present invention.

FIG. 3 is a plan view of a work transfer device applied to the coating device according to one embodiment of the present invention.

FIG. 4 is a cross-sectional view of an upper rail portion of the work transfer device applied to the coating device according to one embodiment of the present invention.

FIG. 5 is a cross-sectional view of a lower rail portion of the work transfer device applied to the coating device according to one embodiment of the present invention.

FIG. 6 is a plan view of a work transfer device applied to a coating device according to another embodiment of the present invention.

FIG. 7 is a front sectional view of a conventional coating apparatus.

FIG. 8 is a front sectional view of a conventional transport device.

[Description of Signs] 1 Coating device 10 Work transfer device 11 Guide drive unit 12 Guide rail 13 Conveyor 15 Work support rod 20 Painting booth 26 Storage unit 27 A base 28 B base 30 Painting robot W Work

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Toshio Yamamoto 100 Kanayama, Ichiriyama-cho, Kariya, Aichi Prefecture Inside Toyota Auto Body Co., Ltd. F Co., Ltd. F term (reference) 4F035 AA04 BB02 BC02 CA02 CB04 CB13 CB26

Claims (3)

[Claims] 1. A coating apparatus for sequentially coating a workpiece conveyed into a painting booth by a workpiece conveying apparatus by a painting robot, comprising: a coating booth; A bottom plate spaced below the base, a deep vertical wall connecting the base and the bottom plate, and a front vertical wall standing upright from the bottom plate to form an opening below the tip of the base. A work support rod having a coating part disposed on the base, a tip extending forward from the opening of the storage part in front of the coating robot, and a base end supported by the guide drive part. A work transport device comprising a guide drive unit for guiding and driving the work support rod in a transport direction, wherein the guide drive unit is stored in the storage unit. 2. The coating apparatus according to claim 1, wherein the work support rod has a holder for supporting a work at a distal end, an upward roller at a proximal end portion, and a space between the upward roller and the distal end. A coating apparatus having a downward roller and a hook engaged with a driving means between the upward roller and the downward roller. 3. The coating apparatus according to claim 1, wherein the guide driving unit includes a guide rail that supports an upward roller of the work support rod, a guide rail that supports a downward roller, and a guide rail between the guide rail and the guide rail. And a driving means for moving the work support rod along the guide rail.