JP4176371B2 - Bumper coating method and coating apparatus and workpiece supply apparatus for carrying out the method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bumper coating method, and a coating apparatus and a workpiece supply apparatus for carrying out the same. More specifically, the two bumpers are arranged so that both end portions thereof are close to each other, or both end portions are opposed to each other. After mounting the work supply device so that the parts face each other and abutting, while rotating the work supply device or after rotating the work by an arbitrary angle, spray the paint toward the work and spray gun The present invention relates to a bumper coating method capable of keeping the distance between a bumper and a spray gun constant by repeatedly moving forward and backward in the workpiece direction, and a coating apparatus and a workpiece supply apparatus for carrying out the same.
[0002]
[Prior art]
Conventionally, when painting a bumper, fix the bumper to both ends of the arm, first paint on one bumper, rotate the arm 180 degrees after the painting is finished, and then paint the other bumper The method of doing was adopted.
[0003]
Here, in FIG. 5, 31 is a workpiece supply device used in the conventional bumper coating, and this workpiece supply device 31 is the upper end of the main shaft 32 that is rotatably provided in the coating booth. A long arm 33 is connected in the vicinity of the arm 33, work fixing members 34A and 34B for fixing the bumper 35 are mounted in the vicinity of both ends of the arm 33, and the bumper 35 can be fixed to both ends of the arm 33. Yes.
[0004]
When the bumper 35 is to be painted using the conventional workpiece supply device 31, the arm is rotated about 180 degrees after fixing one of the bumpers 35 to one workpiece fixing member 34A. One of the bumpers 35 is supplied into the painting booth, and one of the supplied bumpers 35 is painted with a spray gun provided in the painting booth.
[0005]
While the bumper 35 in the painting booth is being painted, the other bumper 35 is fixed to the other work fixing member 34B, and the coating of the bumper 35 supplied into the painting booth is completed. After that, the arm 33 is rotated about 180 degrees, whereby the bumper 35 that has been painted is taken out from the painting booth and the bumper 35 before painting is supplied into the painting booth.
[0006]
In this way, in the conventional workpiece supply device, the bumper can be fixed to both ends of the arm and the arm can be rotated by 180 degrees. By using this, the painted bumper can be taken out. When painting a large number of bumpers, unlike the method in which the painted bumper is removed after painting is completed, and then the bumper before painting is attached to the arm. It is possible to shorten the entire painting time.
[0007]
[Problems to be solved by the invention]
However, in such a workpiece supply apparatus, since the arm has to be rotated about 180 degrees, it is necessary to enlarge the painting booth. Specifically, the width of the painting booth is more than the full length of the arm. Therefore, there is a problem that the entire coating system must be enlarged. And when a painting booth becomes large, the problem that the energy consumption for maintaining the atmosphere of the painting room equipped with the painting system also becomes enormous is considered. That is, when painting a workpiece, a large amount of paint mist is generated. However, since this mist is harmful to the human body, this mist must be discharged to the outside while painting. In this method, mist is discharged together with air by sucking indoor air into the exhaust means using a fan or the like. At this time, if the coating system is large, the amount of air sucked in will be large. For example, in order to maintain the painting room atmosphere while keeping the temperature of the painting room constant, the operation of an air conditioner or the like is required. It is necessary to increase the rate, and as a result, there is a problem that energy consumption becomes enormous.
[0008]
Moreover, in the above-mentioned conventional painting method, the painted bumper can be taken out and the bumper before painting can be supplied at the same time. Therefore, the painted bumper is removed after painting is completed, and then the bumper before painting is applied to the arm. Although it is possible to shorten the entire painting time as compared with a method that has to be mounted, it has recently been desired to provide a method that can further shorten the painting time.
[0009]
Therefore, the present invention aims to further shorten the painting time when painting a bumper and minimize the use energy for maintaining the atmosphere of the painting room by preventing the painting booth from being enlarged. It is an object of the present invention to provide a method for painting a bumper that makes it possible to achieve this, and a painting device and a workpiece supply device for carrying out the method.
[0010]
[Means for Solving the Problems]
In general, the bumper is curved in the same direction at both ends according to the body of an automobile or the like, but the coating is only on the surface and the inside is not applied. Accordingly, the inventor of the present invention has invented a bumper coating method capable of achieving the above-mentioned problems and a coating apparatus and a workpiece supply apparatus for carrying out the method, paying attention to the particularity of the bumper coating.
[0011]
That is, the method for painting a bumper of the present invention according to claim 1 comprises:
Two bumpers are mounted on a work supply device so that both end portions thereof are close to each other or are opposed to each other, and the two bumpers are interposed via the work supply device. Is rotated by an arbitrary angle and then sprayed with a spray gun toward a desired location in the bumper. Thereafter, the rotation of the bumper at an arbitrary angle and the spraying of the paint are repeated a plurality of times, and the rotation of the bumper is repeated. Accordingly, the distance between the bumper and the spray gun is kept constant by repeatedly moving the spray gun forward and backward at least in the direction of the workpiece supply device.
Further, the bumper painting method of the present invention according to claim 2
Two bumpers are mounted on a work supply device so that both end portions thereof are close to each other or are opposed to each other, and the two bumpers are interposed via the work supply device. The spray gun is sprayed toward the bumper by rotating the spray gun, and the spray gun is repeatedly advanced and retracted at least in the direction of the workpiece supply device in accordance with the rotation of the bumper. It is characterized by maintaining a constant distance from each other.
Furthermore, the method for painting a bumper of the present invention according to claim 3 comprises:
Two bumpers are mounted on a work supply device so that both end portions thereof are close to each other or are opposed to each other, and the two bumpers are interposed via the work supply device. The paint is sprayed toward the bumper by a spray gun while rotating, and after the rotation of the bumper is stopped at an arbitrary position, the paint is sprayed toward a desired position of the bumper and an arbitrary angle of the bumper. And the spraying of the paint is repeated a plurality of times, and at the same time, the distance between the bumper and the spray gun is increased by repeating the forward and backward movement of the spray gun at least toward the workpiece supply device in accordance with the rotation of the bumper. It is characterized by keeping constant.
And the coating apparatus of this invention for implementing these methods is
The two bumpers provided in the painting booth can be installed so that both ends are close to each other, or both ends are in contact with each other. A workpiece supply device that can rotate two bumpers;
A spray gun for spraying paint toward the two bumpers mounted on the workpiece supply device;
Moving means for allowing the spray gun to advance and retract at least in the direction of the workpiece supply device;
At least comprises a movement control means for the said spray gun in conjunction with controlling the moving means in rotation of the bumper enables the advancement and retraction of the said workpiece feeder direction, the workpiece supply The apparatus includes a main shaft, a fixing member that is connected to the vicinity of the upper end portion of the main shaft, and includes a mounting member and a plurality of arms that extend substantially radially from the mounting portion, and the main shaft is rotatably connected. And a driving belt connected to the main shaft in the supporting arm, and the driving belt is driven via a driving means to rotate the main shaft and to fix the fixing member. It is characterized in that the two bumpers fixed to the fixing member can be rotated by rotating.
[0012]
In the present invention, the two bumpers are fixed to the work supply device so that both end portions thereof face each other, and then the bumper is rotated while rotating the work supply device or by rotating the work supply device by an arbitrary angle. This is characterized in that the paint is sprayed using a spray gun toward the surface, and as a result, two bumpers can be painted in a series of operations, so that the painting time can be greatly shortened.
[0013]
In addition, when rotating the workpiece supply device, the spray gun is moved forward or backward in the direction of the bumper to maintain a constant distance between the bumper and the spray gun. It is possible to effectively prevent uneven coating even when painting while making it possible to prevent contact between the bumper and the spray gun even when a spray gun is placed near the bumper. .
[0014]
In addition, two bumpers are mounted on the work supply device so that both end portions thereof are close to each other or face each other, and are necessary for rotation of the work supply device. This makes it possible to reduce the space required for the painting system, thereby miniaturizing the entire painting system, and minimizing the painting booth to minimize the energy used to maintain the painting room atmosphere. Is possible.
[0015]
【Example】
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A bumper coating method of the present invention and an embodiment of a coating apparatus and a workpiece supply apparatus for carrying out the method will be described with reference to the drawings. FIG. 1 is a perspective view for explaining the coating apparatus of the present embodiment. In the figure, reference numeral 1 denotes a part of a painting booth, and the painting apparatus of this embodiment is provided in the painting booth 1.
[0016]
In the figure, reference numeral 2 denotes a workpiece supply device. In this embodiment, the workpiece supply device 2 includes a main shaft 201. Two bumpers 6 are provided at the upper end portion of the main shaft 201, and both end portions are provided at both ends. A fixing member 5 is provided that can be arranged close to each other, or can be fixed so that both end portions can face each other.
[0017]
The spindle 201 has a lower end portion 204 connected to a support arm 202 and is connected to a belt 203 in the support arm 202 and can be rotated 180 degrees by driving a driving means such as a motor. It is said that.
[0018]
Here, FIG. 2 is a view for explaining the structure of the workpiece supply device 2. In the figure, the main shaft 201 has a lower end vicinity 204 inserted into the support arm 202 and a bearing (not shown). And so on. The lower end vicinity 204 is connected to a driving belt 203 in the support arm 202, and the driving belt 203 is connected to driving means such as a motor (not shown), thereby driving the driving means such as a motor. Thus, the main shaft 202 is rotated and the fixing member 5 provided in the vicinity of the upper end portion of the main shaft 201 is rotated, so that the bumper 6 can be rotated.
[0019]
In this embodiment, the fixing member 5 includes a mounting portion 501 that is mounted on the main shaft 201 and an arm portion 502 that extends from the mounting portion 501 in a substantially radial manner, in the vicinity of the distal end portion of the arm portion 502. The bumper 6 is configured to be fixed, but such a configuration is not necessarily adopted, and the two bumpers 6 can be arranged opposite to each other in the vicinity of each other, or the both ends are opposed to each other. Any method may be adopted as long as it can be fixed by contact.
[0020]
Further, regarding the configuration of the workpiece supply device 2, any configuration may be adopted as long as the two bumpers 6 mounted via the fixing member 5 can be rotated 360 degrees.
[0021]
Next, in FIG. 1, reference numeral 3 denotes a spray gun. In this embodiment, the spray gun 3 uses a spray gun generally used for painting, and is connected to a paint supply means (not shown). It is used for spraying paint toward the rotating bumper 6 while being supplied.
[0022]
In the present embodiment, the spray gun 3 allows the forward and backward movements in the direction of the bumper 6, and repeats forward and backward movements according to the rotation of the workpiece supply device 2. It is possible to maintain a constant distance.
[0023]
That is, since the bumper is generally long, if it is rotated, the distance from the spray gun will change, which may cause uneven coating. Further, when the spray gun 3 is disposed in the vicinity of the bumper 6, there is a possibility that the spray gun 3 and the bumper 6 come into contact with each other due to the rotation of the bumper 6. Therefore, in the present embodiment, as described above, the spray gun 3 is moved forward or backward in accordance with the rotation of the workpiece supply device 2, thereby keeping the distance between the spray gun 3 and the bumper 6 constant, and uneven coating occurs. To prevent that.
[0024]
Here, the mechanism for making the spray gun 3 movable will be described. In the figure, reference numeral 7 denotes a robot arm for moving the spray gun 3, and this robot arm 7 is movably connected to a rail 706. The first drive arm 703 is pivotally supported by the shaft 702 so as to be bent. Further, a second drive arm 705 is pivotally supported by the first drive arm 703 by a shaft 704, and the spray gun 3 is attached to the tip of the second drive arm 705.
[0025]
In the present embodiment, the first drive arm 703 can be bent with respect to the connecting portion 701 by power transmission means such as a gear, and the second drive arm 705 is also made of a gear or the like. The first drive arm 703 can be bent by power transmission means.
[0026]
With this configuration, the spray gun 3 can be advanced and retracted by bending the first arm 703 and the second arm 705, and thereby the distance between the spray gun 3 and the bumper 6 can be kept constant. It is said.
[0027]
However, in the coating apparatus of the present invention, any method may be adopted as a method of moving the spray gun 3, and it is not always necessary to employ the movable robot arm as described above, and a stationary type. A painting robot may be used, and a plurality of spray guns 3 may be provided.
[0028]
For example, FIG. 3 is a diagram for explaining another method for moving the spray gun 3. In the figure, a shaft 801 is connected to the spray gun 3, and an arbitrary rear portion of the shaft 801 is located at the rear side. Is provided with a movable plate 802. A screw screw 803 is inserted into the movable plate 802 so as to be parallel to the shaft 801, and the screw screw 803 is concentrically connected to a drive shaft 804 in a driving means 805 such as a motor. Yes. When the drive means 805 such as a motor is rotated forward or reverse in this configuration, the screw screw 803 rotates with the rotation of the drive shaft 804. As a result, the movable plate 802 moves on the screw screw 803 and the shaft 801 moves forward or backward, whereby the spray gun 3 can be moved.
[0029]
Next, the control system of the coating apparatus 1 of the present embodiment will be described. FIG. 4 is a block diagram showing the control system of the present embodiment. The coating apparatus 1 of the present embodiment includes a processing unit. At least a motor for rotating the workpiece supply device 2, a robot arm, a spray gun, an operation panel, a power source, and a paint supply means for supplying paint to the spray gun are connected to the processing unit. When the switch is turned on, the bumper 6 is rotated using the workpiece supply device 2, the paint is sprayed from the spray gun 3 toward the bumper 6, and the spray is performed while controlling the robot arm 7 in accordance with the rotation of the bumper. The gun 3 is moved forward and backward in the direction of the bumper 6, thereby making it possible to keep the distance between the bumper 6 and the spray gun 3 constant.
[0030]
Next, the first embodiment of the bumper coating method of the present invention using the coating apparatus of the present embodiment configured as described above will be described. First, the two bumpers 6 are fixed using the fixing member 5. The both end portions are close to each other and can be disposed opposite to each other, or the both end portions are opposed to each other and can be brought into contact with each other.
[0031]
In this state, the switch is turned on to rotate the workpiece supply device 2 and stop the rotation at an arbitrary point. Thereafter, the spray gun 3 directs the paint toward a desired position in the stopped bumper 6. It is characterized by repeating the operations of spraying and then rotating, stopping and spraying the paint supply device.
[0032]
For example, when the end surface along the longitudinal direction of one bumper 6 reaches a position facing the spray gun 3, the rotation is stopped, and then the spray gun 3 is moved in the longitudinal direction of the bumper 6 while spraying paint. It is made to reciprocate along, and the end surface of the bumper 6 is thereby painted. After that, the work supply device is rotated by about 180 degrees, and when the end surface along the longitudinal direction of the other bumper 6 reaches a position facing the spray gun 3, the rotation is stopped. The spray gun 3 is reciprocated along the longitudinal direction of the bumper 6 while spraying the paint, thereby coating the end face of the other bumper 6. At this time, the driving of the robot arm 7 is controlled, and the spray gun 3 is repeatedly advanced and retracted at least in the direction of the workpiece supply device 2 in accordance with the rotation of the workpiece supply device 2, whereby the bumper 6 and spray Keep the distance to Gun 3 constant.
[0033]
Next, a second embodiment of the bumper coating method of the present invention using the coating apparatus of the present embodiment will be described. In the second embodiment, two bumpers 6 are formed in the same manner as in the first embodiment. The two bumpers 6 are mounted using the work supply device 2 after the both end portions can be arranged close to each other and mounted on the work supply device 2 so that the both end portions can face each other and come into contact with each other. While rotating, the paint is sprayed toward the rotating bumper 6, the driving of the robot arm 7 is controlled, and the spray gun 3 is at least moved to the workpiece supply device in accordance with the rotation of the workpiece supply device 2. The distance between the bumper 6 and the spray gun 3 is kept constant by repeating forward and backward movements in two directions.
[0034]
Next, a third embodiment of the bumper coating method of the present invention using the coating apparatus of the present embodiment will be described. In the third embodiment, the coating methods of the first embodiment and the second embodiment are combined. It is a painting method.
[0035]
That is, in the same manner as in the above-described embodiment, the two bumpers 6 are mounted on the work supply device 2 such that both end portions thereof can be arranged close to each other, or can be opposed to each other. Later, while the bumper 6 is rotated, the paint is sprayed toward the rotating bumper 6, and then the rotation of the bumper 6 is stopped at an arbitrary point in time. Paint the area to be used. Alternatively, after the rotation of the bumper is stopped at an arbitrary time point, a desired portion of the stopped bumper is painted, and then the paint is sprayed onto the rotating bumper 6 while rotating the bumper 6. At the same time, the driving of the robot arm 7 is controlled, and the spray gun 3 is repeatedly advanced and retracted at least in the direction of the workpiece supply device 2 in accordance with the rotation of the workpiece supply device 2 to Keep the distance to Gun 3 constant.
[0036]
As described above, in this embodiment, since the two bumpers are applied in a series of operations, the coating time can be greatly shortened.
[0037]
At this time, since the spray gun can be moved forward and backward in accordance with the rotation of the workpiece supply device so that the distance between the spray gun and the bumper can be kept constant, coating can be performed while rotating the long bumper. Even when it is performed, it is possible to effectively prevent uneven coating, and even when a spray gun is disposed in the vicinity of the bumper, it is possible to prevent the bumper and the spray gun from contacting each other.
[0038]
Furthermore, since the two bumpers are mounted on the work supply device so that both end portions thereof are close to each other or face each other and are in contact with each other, it is necessary to rotate the work supply device. This makes it possible to reduce the space required for the painting system, thereby miniaturizing the entire painting system, and minimizing the painting booth to minimize the energy used to maintain the painting room atmosphere. Is possible.
[0039]
Furthermore, by adopting a method of spraying paint while rotating the bumper as in the second embodiment, it is possible to repeatedly perform thin coating and achieve a finish with excellent aesthetics.
[0040]
In addition, as in the third embodiment, by combining rotation painting and stop painting, it is possible to achieve an excellent finish, and rotation painting alone is not sufficient, such as mounting holes for fog lamps and the like. It is possible to fully paint the tending parts.
[0041]
【The invention's effect】
The bumper coating method of the present invention and the coating apparatus and workpiece supply apparatus for carrying out the method are implemented in the form described above, and have the effects described below.
[0042]
In the present invention, the two bumpers are fixed to the work supply device so that both end portions thereof face each other, and then the bumper is rotated while rotating the work supply device or by rotating the work supply device by an arbitrary angle. It is possible to spray the paint using a spray gun toward the surface, and the two bumpers can be painted by a series of operations, so that the painting time can be greatly shortened.
[0043]
In addition, when rotating the workpiece supply device, the spray gun is moved forward or backward in the direction of the bumper to maintain a constant distance between the bumper and the spray gun. It is possible to effectively prevent uneven coating even when painting while making it possible to prevent contact between the bumper and the spray gun even when a spray gun is placed near the bumper. .
[0044]
In addition, two bumpers are mounted on the work supply device so that both end portions thereof are close to each other or face each other, and are necessary for rotation of the work supply device. This makes it possible to reduce the space required for the painting system, thereby miniaturizing the entire painting system, and minimizing the painting booth to minimize the energy used to maintain the painting room atmosphere. Is possible.
[Brief description of the drawings]
FIG. 1 is a perspective view for explaining an embodiment of a coating apparatus of the present invention.
FIG. 2 is a view for explaining the structure of a workpiece supply device in an embodiment of the coating apparatus of the present invention.
FIG. 3 is a view for explaining another form of the spray gun moving mechanism.
FIG. 4 is a block diagram for explaining a control system in the embodiment of the coating apparatus of the present invention.
FIG. 5 is a diagram for explaining a conventional coating method.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Painting booth 2 Work supply apparatus 201 Main axis | shaft 202 Support arm 203 Drive belt 204 Near the lower end part of a main axis | shaft 3 Spray gun 5 Fixing member 501 Mounting part 502 Arm part 6 Bumper 7 Robot arm 701 Connection part 702,704 Shaft 703 1st drive Arm 705 Second drive arm 706 Robot arm moving rail 8 Other forms of spray gun moving mechanism 801 Shaft 802 Movable plate 803 Screw screw 804 Drive shaft 805 Drive means

Claims (5)

Two bumpers (6) are mounted on the work supply device (2) so that both end portions thereof face each other close to each other or both end portions face each other and come into contact with each other, and the work supply device (2) The two bumpers (6) are rotated by an arbitrary angle via the spray gun (3), and then the spray gun (3) sprays the paint toward a desired portion of the bumper (6), and then the bumper (6 ) Rotation of an arbitrary angle and spraying of paint are repeated a plurality of times, and the spray gun (3) is advanced and retracted at least in the direction of the workpiece supply device (2) in accordance with the rotation of the bumper (6). A method of painting a bumper characterized in that the distance between the bumper (6) and the spray gun (3) is kept constant by repeating. Two bumpers (6) are mounted on the work supply device (2) so that both end portions thereof face each other close to each other or both end portions face each other and come into contact with each other, and the work supply device (2) ) And spraying paint toward the bumper (6) by the spray gun (3) while rotating the two bumpers (6), and the spray gun according to the rotation of the bumper (6). A bumper coating method characterized in that the distance between the bumper (6) and the spray gun (3) is kept constant by repeating (3) at least forward and backward in the direction of the workpiece supply device (2). Two bumpers (6) are mounted on the work supply device (2) so that both end portions thereof face each other close to each other or both end portions face each other and come into contact with each other, and the work supply device (2) ) While spraying the two bumpers (6) through the spray gun (3) while spraying the paint toward the bumper (6), and stopping the rotation of the bumper (6) at an arbitrary position. Later, paint is sprayed toward the desired location of the bumper (6), and the rotation of the bumper (6) at an arbitrary angle and the spray of the paint are repeated a plurality of times, and in accordance with the rotation of the bumper (6). Thus, the distance between the bumper (6) and the spray gun (3) can be kept constant by repeating the forward and backward movement of the spray gun (3) at least in the direction of the workpiece supply device (2). Bumper method of painting characterized by. The two bumpers (6) provided in the painting booth (1) can be mounted so that both end portions thereof face each other close to each other, or both end portions face each other and come into contact with each other, A workpiece supply device (2) that can rotate two bumpers (6) mounted on the workpiece; and
A spray gun (3) for injecting paint toward the two bumpers mounted on the workpiece supply device (2);
Moving means (7, 8) for allowing the spray gun (3) to advance and retreat at least in the direction of the workpiece supply device (2);
At least for controlling the moving means (7, 8) to enable the spray gun (3) to move forward and backward in the direction of the workpiece supply device (2) in accordance with the rotation of the bumper (6). A movement control means, and a coating apparatus comprising:
The workpiece supply device (2) includes a main shaft (201), a mounting portion (501) connected to the vicinity of the upper end portion of the main shaft (201), and a plurality of the plurality of workpieces extending substantially radially from the mounting portion (501). A fixing member (5) having an arm (502), a support arm (202) to which the main shaft (201) is rotatably connected, and the main shaft (201) in the support arm (202). A driving belt (203) connected to each other, and the driving belt (203) is driven through driving means to rotate the main shaft (201) and the fixing member (5). Thus, the two bumpers (6) fixed to the fixing member (5) thereby can be rotated. A workpiece supply device that can be mounted so that two bumpers (6) are close to each other and face each other, or both ends face and face each other when painting a bumper, A main shaft (201), a mounting portion (501) connected in the vicinity of the upper end portion of the main shaft (201), and a plurality of arms (502) extending substantially radially from the mounting portion (501). A fixing member (5), a support arm (202) to which the main shaft (201) is rotatably connected, and a driving belt (203) connected to the main shaft (201) in the support arm (202). And by driving the driving belt (203) through the driving means, the main shaft (201) is rotated and the fixing member (5) is rotated, thereby the fixing member. Two bumper fixed to 5) and (6) the work supplying apparatus characterized by being rotatable.

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