JP2010269273A - System of coating wheel for vehicle and method of coating wheel for vehicle using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable the miniaturization of a coating line and the shortening of a coating time at the time of coating of a work requiring a plurality of coating steps. <P>SOLUTION: This system of coating a wheel for a vehicle is equipped with a coating area 2 which is equipped with a coating table 3 having a work region 4 capable of becoming a coating region 4a or setting region 4b and a plurality of coating jet means 5, a plurality of drying areas 18 and 19 for drying the work after coating by induction heating and a moving means 28 for moving the work. The uncoated work is moved to the coating table 3 to be subjected to primary coating, the work after the primary coating is primarily dried in the drying area 18, the work after the primary drying is moved to the coating table 3 to be secondarily coated and the work after the secondary coating is secondarily dried in the drying area 19. Thereafter, the coating and drying of the work are repeated until a necessary number of coating and drying steps are completed and the work subjected to a necessary number of the coating and drying steps is detached from the coating and drying line. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a vehicle wheel coating system and a vehicle wheel coating method using the same, and more specifically, a single coating table is used for coating a vehicle wheel that requires a plurality of coating steps and a drying step. The vehicle wheel coating system and the vehicle wheel coating method using the same are characterized in that both primary coating and secondary coating are possible, and drying after coating is performed using induction heating. About.

  In general, when painting a vehicle wheel such as an aluminum wheel, multiple paintings and drying are required, and therefore primary coating, primary drying, secondary coating, secondary drying, and in some cases further There is a need for more than tertiary painting and drying processes. However, conventionally, in the case of such a plurality of paintings and paintings that require drying, booths or the like for performing each painting have been separately installed in one line.

  In other words, conventionally, in such a vehicle wheel painting that requires multiple painting and drying, a plurality of painting processes such as a primary painting process and a secondary painting process are incorporated in one painting line. In addition, a drying step by hot air drying was placed between each step.

  For this reason, it has been pointed out that in such a conventional coating system, the entire coating line must be enlarged.

  In the conventional coating system, hot air drying is performed in the drying process between the primary coating and the secondary coating. In the case of hot air drying, the inside of the drying furnace is changed from 150 ° C. to 160 ° C. necessary for drying. It took 30 to 40 minutes to complete, and then 30 to 40 minutes were required for drying. Therefore, it took a long time to dry, and the entire coating time was extended for a long time.

JP 2005-342616 A

  Accordingly, the present invention provides a vehicle wheel painting system capable of reducing the painting line and shortening the painting time when painting a plurality of vehicle wheels that require painting and drying. An object is to provide a method for painting a used vehicle wheel.

The vehicle wheel coating system of the present invention comprises:
A vehicle wheel coating system for use in painting a vehicle wheel that requires a plurality of painting and drying processes,
A paint table that can be a painting area or a setting area and has a work area in which one or a plurality of works can be set, and a paint is sprayed toward the work set in the work area that is the painting area of the painting table A plurality of paint spraying means, and a paint area comprising:
A plurality of drying areas for drying the workpiece coated in the coating area by induction heating;
A moving means for moving the workpiece,
The unpainted work is moved to the work area that is the setting area on the painting table, the work area that is the setting area is set as the paint area, and the paint is sprayed onto the work in the work area that is the paint area. The paint is sprayed from the means to perform the primary coating of the workpiece,
Move the workpiece that has undergone the primary coating to the drying area and perform primary drying by induction heating,
The work after primary drying is moved to the work area that is the setting area on the painting table, the work area that is the setting area is set as the painting area, and the work in the work area that is the painting area is moved to the work area. The paint is sprayed from the paint spraying means and the workpiece is secondarily painted.
Move the workpiece that has been subjected to the secondary coating to the drying area and perform secondary drying by induction heating,
Thereafter, the painting and drying of the workpiece are repeated until the required number of paintings and drying are completed,
After that, it is possible to remove the necessary number of painted and dried workpieces from the line.

  In the painting system of the present invention, a painting table that can be a painting area or a setting area and has a work area in which one or a plurality of workpieces can be placed is installed in the painting area. The painting area is provided with a plurality of paint spraying means for spraying the paint toward the work installed in the work area that is the painting area on the painting table.

  Therefore, in the coating system of the present invention, it is possible to perform coating with a plurality of types of paints on a single coating table. That is, primary coating, secondary coating, and in some cases, further, for example, tertiary coating, can be performed on one coating table. Therefore, according to the painting system of the present invention, it is not necessary to separately incorporate a plurality of painting processes in one painting line, and the entire painting line can be reduced in size.

  Further, in the coating system of the present invention, drying after coating is performed by heating using induction heating instead of hot air drying, so that the drying time can be shortened, thereby reducing the entire coating time. Is possible.

It is a system diagram for demonstrating the whole structure of the Example of the coating system of this invention. It is a figure for demonstrating the workpiece | work latching jig in the Example of the coating system of this invention. It is a figure for demonstrating the inside of the heating chamber in the Example of the coating system of this invention. It is a figure for demonstrating the inside of the heating chamber in the Example of the coating system of this invention.

  In the coating system of the present invention, it has a coating area for spraying the paint toward the workpiece and coating the workpiece, and in this coating area, a coating table for installing one or a plurality of workpieces, It is installed so that it can rotate freely.

  The painting table has a circular planar view field and a pair of semicircular work areas adjacent to each other. Then, each work area can be a painting area or a setting area by half-rotating the painting table. One or a plurality of workpieces can be set in each of the work areas. Yes.

  The paint area is provided with a plurality of paint spraying means for spraying paint toward the work installed on the paint table. Each of the paint spraying means can spray paint toward a work set in a work area which is a paint area on the paint table, and can further make the spray paints different from each other. This makes it possible to apply a plurality of coats using a single coating table.

  Furthermore, in the coating system of this invention, it has a drying area for drying the workpiece | work painted in the coating area by induction heating. And this drying area is made into the plurality corresponding to the number of painting processes.

  Furthermore, the painting system of the present invention has a moving means for moving the workpiece. This moving means uses, for example, a handling robot or the like, and moves the loaded unpainted workpiece to the painting table. Then, move the painted workpiece on the painting table to the drying area, and then move the dried workpiece on the drying area to the painting table for secondary painting, etc., or secondary drying in the drying area. It is possible to move to unload later workpieces.

  With this configuration, the painting system of the present invention moves an unpainted workpiece to the work area that is the setting area in the painting table, and the work area that is the setting area is set as the painting area. The paint is sprayed onto the work in the work area by the paint spraying means to perform the primary coating of the work, the work that has been subjected to the primary coating is moved to the drying area and is primarily dried by induction heating. Move to the work area that is the setting area on the painting table, change the work area that is the setting area to the paint area, and spray the paint from the paint spraying means to the work in the work area that is the paint area. Perform secondary coating, move the workpiece after the secondary coating to the drying area and perform secondary drying by induction heating. It is dry and paint work, repeated until the end of the painting and drying of the required number, remove from line work painting and drying the required number has been completed, it is made possible.

  That is, in the painting method of the present invention using the painting system, first, an unpainted workpiece is loaded on the system, and then the loaded workpiece is moved to a work area which is a setting area on the painting table.

  Next, the coating table is rotated halfway to set the setting area where the unpainted workpiece is moved to the painting area, and thereby the unpainted workpiece is moved to a paintable area.

  Then, a paint for coating is sprayed by the paint spraying means toward the pre-painting work in the work area that has become the painting area, thereby performing primary coating of the work.

  Next, the work that has been subjected to primary coating in this way is moved to a drying area and is primarily dried by induction heating.

  Then, the work after the primary drying is moved to a work area that is a setting area on the painting table.

  Next, rotate the painting table halfway to set the work area, which is the setting area where the primary dried workpiece is moved, to the painting area. Move.

  Then, a coating material for secondary coating is sprayed by the coating material spraying means toward the workpiece in the work area that has become the coating region, thereby performing secondary coating of the workpiece for which primary drying has been completed.

  Next, the work after the completion of the secondary coating is moved to the drying area and subjected to secondary drying by induction heating.

  After that, painting of the workpiece on the painting table and drying of the workpiece after painting in the drying area are repeated as many times as necessary, and after the necessary number of painting and drying is completed, this necessary number of painting and drying are finished. After transporting to the unloading point, it is removed from the line, thereby finishing the painting of the workpiece.

  An embodiment of a coating system for a vehicle wheel according to the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a configuration of the coating system of the present embodiment, in which 1 is a coating system of the present embodiment. is there.

  The coating system 1 of the present embodiment is a coating system for coating a vehicle wheel (“work”) such as an aluminum wheel by two coatings (“2 coats”). It has a coating area for performing coating, a primary drying area for performing a primary drying process after primary coating, and a secondary drying area for performing a secondary drying process after secondary coating.

  That is, 2 in the figure is a painting area in the present embodiment. In this embodiment, the paint area 2 is provided with a paint table for installing a work and paint spraying means for spraying a paint toward the work installed on the paint table. As a means, a spray gun is used.

  Here, the painting table will be described. In the figure, 3 is a painting table arranged in the painting area 2. In this embodiment, the coating table 3 has a circular planar field of view and is rotatably disposed in the coating area 2 by a support column (not shown). Therefore, the painting table 3 can be rotated by rotating the support column via a driving means such as a motor.

  Moreover, the upper surface of the painting table 3 is divided into semicircular portions, and each of them is defined as a work area 4. Thus, the upper surface of the painting table 3 includes a pair of semicircular work areas 4.

  Further, each work area 4 is provided with two work mounting portions 301, whereby two work pieces can be mounted on each work area 4.

  Each of the pair of work areas 4 can become a painting area or a setting area by half-rotating the painting table 3.

  That is, the painting area 2 has a spray gun as a paint spraying means in such a manner that the paint can be sprayed only toward the upper half portion of the paint table 3. Therefore, in the present embodiment, in the working area 4 of the coating table 3, the upper half portion where the spray gun is facing is the coating area 4a, and the lower half portion where the spray gun is not facing is the setting area 4b.

  This relationship will be described in detail. In FIG. 1, reference numeral 5 denotes a spray gun as a paint spraying means. In this embodiment, a primary spray gun 5a capable of spraying a primary paint and a primary paint Two spray guns 5b for secondary coating capable of spraying paint are provided corresponding to the workpiece mounting portions 301, respectively.

  The spray guns 5 a and 5 b are arranged so that the paint can be sprayed toward the coating area 4 a in the upper half portion of the coating table 3 and toward the workpiece mounted on the workpiece mounting portion 301.

  For this purpose, the work area of the painting table 3 is a painting area 4a where the spray gun 5 can spray paint and the remaining area is the setting area 4b. It can be painted.

  In the work area 4 of the painting table 3, the painting area 4a and the setting area 4b can be interchanged by rotating the painting table 3 halfway. Therefore, in the painting system 1 of this embodiment, it is possible to perform setting for painting and painting of workpieces with one painting table, and it is not necessary to provide a setting table for setting, so the painting line can be reduced in size. It is.

  In the coating system 1 of the present embodiment, the primary coating process and the secondary coating process can be performed in only one coating table 3, so that the primary coating process and the secondary coating process are performed in one coating line. Need not be incorporated separately, and this can also reduce the size of the apparatus.

  Next, reference numeral 6 in the figure denotes a transport area. That is, the coating system 1 of the present embodiment has a transfer area 6, and this transfer area 6 loads an unpainted workpiece into the system and transfers the loaded unpainted workpiece to the coating area 2. It is used for transporting to move, and for transporting workpieces that have been painted after all processes have been completed to the unload area.

  In this embodiment, the transfer area 6 is configured to include a chain conveyor 7, and a loaded unpainted workpiece is loaded via a plurality of workpiece locking jigs arranged on the chain conveyor 7. The workpiece is transported for painting, and the finished workpiece is transported to the unload area.

  In the present embodiment, the transport area 6, that is, the chain conveyor 7 is vertically long toward the painting area, and rotates clockwise.

  Further, in the coating system 1 of this embodiment, in the transfer area 6, the rear end portion facing the coating area 2 is a load / unload area 2901, and the front end portion facing the coating area 2 is a standby area 2902. However, the installation location of the load / unload area and the location of the standby area such as the rotation direction of the chain conveyor 7 are not particularly limited.

  Next, the workpiece locking jig arranged on the chain conveyor 7 will be described with reference to FIG. 2. In the figure, 9 is the workpiece locking jig in the present embodiment. In the figure, reference numeral 8 denotes a chain portion of the chain conveyor 7 constituting the transport area 6, and in the figure, 31 denotes a vehicle wheel as a workpiece.

  And the workpiece | work latching jig 9 in a present Example has the disk 10 for a movement connected with the chain 8 and conveyed with the movement of the chain 8. FIG.

  The moving disk 10 is supported by a disk support roller 12 provided in the guide 11.

  Furthermore, a jig main body 13 is provided on the upper surface of the moving disk 10. The jig main body 13 is mounted on the fixed-side main body 14 fixed to the upper surface of the moving disk 10 and in contact with the fixed-side main body 14 so as to be separated from the fixed-side main body 14. And a movable main body portion 15 placed thereon.

  The fixed-side main body 14 is substantially cylindrical, and the shaft 16 passes through the cylindrical fixed-side main body 14.

  On the other hand, the movable-side main body 15 has a connecting portion 1501 having the same diameter as that of the fixed-side main body 14, and a mounting portion 1502 having a large diameter is provided above the connecting portion 1501. The work 31 can be placed on the placement unit 1502.

  Further, an insertion hole 1503 is formed in the connecting portion 1501 of the movable side main body portion 15 from the lower end upward, and the shaft 16 penetrating the fixed side main body portion 14 is inserted into the insertion hole 1503. The tip of the shaft 16 is in contact with the innermost part of the insertion hole 1503.

  On the other hand, the lower end portion of the shaft 16 extends to the lower side of the chain 8 located below the moving disk 10, and a shaft side pressing member 17 is attached to the lower end portion.

  Therefore, in such a configuration, normally, the fixed-side main body 14 and the movable-side main body 15 are in contact with each other. On the other hand, since the distal end portion of the shaft 16 is in contact with the innermost portion of the insertion hole 1503 formed in the movable-side main body portion 15, when the shaft 16 is pushed upward via the shaft-side pressing member 17, With the rise, the movable side main body 15 is pushed upward, and the movable side main body 15 is separated from the fixed side main body 14. For this reason, this mechanism makes it possible to move the locked work 31 in the vertical direction.

  The chain conveyor 7 having the workpiece locking jig 9 configured as described above conveys an unpainted workpiece loaded in the load / unload area 2901 in the conveyance area 6 to the standby area 2902 and waits. A workpiece loaded in the area 2902 and completed with painting is transported to the load / unload area 2901. Therefore, in the coating system 1 of the present embodiment, loading and unloading can be performed in one transport area, and this can also reduce the transport area.

  Next, the primary drying area and the secondary drying area will be described. In the figure, 18 is a primary drying area, and 19 is a secondary drying area.

  The primary drying area 18 and the secondary drying area 19 both have a heating chamber 20 for heating and drying the workpiece after coating, and a temperature of the workpiece that has been heated and dried in the heating chamber 20. And a cooling region 22 for lowering the temperature of the work.

  Each of the primary drying area 18 and the secondary drying area 19 has a chain conveyor 7 similar to the chain conveyor 7 constituting the transfer area 6, and the chain conveyor 7 is a workpiece locking jig. In a state where the workpiece is locked to 9, the inside of the heating chamber 20, the thermal storage chamber 21 and the cooling region 22 is moved, and thereby the workpiece is dried.

  In the present embodiment, the primary drying area 18 and the secondary drying area 19 are both arranged in the direction parallel to the transfer area 6 as shown in FIG. Longer than that.

  The chain conveyor 7 constituting the primary drying area 18 rotates counterclockwise, and the chain conveyor 7 constituting the secondary drying area 19 rotates clockwise.

  Next, the heating chamber 20 will be described. The portion indicated by 20 in FIG. 1 is a heating chamber. That is, in the coating system 1 of the present embodiment, the end portion on the painting area 2 side in the upper half portion on the painting area 2 side in the portion where the chain conveyor 7 is moving away from the painting area 2 is used. The heating chamber 20 is disposed in the removed portion.

  In this embodiment, the heating chamber 20 can accommodate four workpiece locking jigs. That is, four heating coils for induction heating are disposed in the heating chamber 20, and a work is accommodated in the heating coil and an electric current is passed through the heating coil, so that the four works can be made simultaneously. Induction heating is possible.

  Here, FIGS. 3 and 4 are diagrams for explaining the inside of the heating chamber 20, in which 23 is a heating coil for induction heating. In the present embodiment, the heating coil 23 is connected to a power source (not shown) and has a cylindrical shape having an inner diameter capable of accommodating a workpiece and having a ceiling portion.

  In the figure, reference numeral 24 denotes an air cylinder. That is, in this embodiment, an air cylinder 24 as an elevating means is provided below the heating coil 23 in the heating chamber 20. The number of air cylinders corresponds to the number of workpiece locking jigs that can be accommodated in the heating chamber 20, that is, four in this embodiment.

  In each air cylinder 24, a motor 26 is connected to the movable part 25 that moves up and down, and a motor-side pressing member 27 that can be connected to the shaft-side pressing member 17 is connected to the rotating shaft of the motor 26. The motor-side pressing member 27 is normally separated from the shaft-side pressing member 17, but is brought into contact with the shaft-side pressing member 17 by being raised, and further rising is continued. The shaft side pressing member 17 is pushed up.

  Accordingly, in such a configuration, the workpiece locking jig 9 that has locked the workpiece 31 moves into the heating chamber 20, and the shaft-side pressing member 17 of the workpiece locking jig 9 is located above the motor-side pressing member 27. In this state, when the air cylinder 24 is driven to raise the movable portion 25 and thereby the motor side pressing member 27 is raised, the shaft 16 is pushed upward via the shaft side pressing member 17. It is done.

  Then, as described above, as the shaft 16 is raised, the movable side main body 15 in the workpiece locking jig 9 is pushed upward, and the movable side main body 15 is separated from the fixed side main body 14. As a result, the position of the workpiece 31 moves upward, and the workpiece 31 is accommodated in the heating coil 23, whereby the workpiece 31 can be inductively heated.

  At that time, by rotating the motor 26, the workpiece 31 can be rotated in the heating coil 23, and the workpiece 31 can be effectively heated. FIG. 3 shows a state in which the work 31 locked by the work locking jig 9 has entered the heating chamber 20. The air cylinder 24 is driven to accommodate the work 31 in the heating coil 23. The figure which showed the state which carried out is FIG.

  Thus, in the coating system 1 of the present embodiment, the workpiece can be stored in the heating coil 23 and heated and dried by driving the air cylinder 24, so that the workpiece after coating is dried in a short time. It is possible. At this time, in this embodiment, the work housed in the heating coil 23 can be rotated by rotating the motor 26. Therefore, unlike the case where the work is simply housed in the heating coil 23 and heated, It is possible to eliminate workpiece temperature unevenness.

  The induction heating method and the like are well-known techniques, and thus detailed description thereof is omitted. Also, the workpiece raising mechanism is not particularly limited, and any mechanism may be employed as long as the workpiece can be raised.

  Next, in the primary drying area 18, the half portion on the side opposite to the coating area is a warming chamber 21 adjacent to the heating chamber 20. In the present embodiment, the thermal storage room 21 is a sealed space that is blocked from the outside, and hot air is supplied to the inside. Accordingly, the work heated in the heating chamber 20 is kept warm while passing through the heat-retaining room 21 by the chain conveyor 7, so that the heat can be kept.

  Next, in the primary drying area 18, the part facing the heating chamber 20 in the part where the chain conveyor 7 is moving in the direction toward the coating area 2 is a cooling area 22 opened to the outside. . And in this cooling area | region 22, it is supposed that the workpiece | work which came out of the said thermal storage 21 is forcedly cooled with a blower.

  In the present embodiment, the configuration of the secondary drying area 19 is the same as that of the primary drying area 18 except that the arrangement is symmetric.

  In the present embodiment, the end portion 30 on the painting area 2 side is a standby area. And this waiting area 30 waits before moving the workpiece | work which primary coating was complete | finished to the heating chamber 20, and is painting the workpiece | work which passed the cooling area | region 22 and completed the drying process for secondary coating. Used to wait before moving to area 2 or to wait before moving to transfer area 6 for unloading.

  In the figure, reference numeral 28 denotes a handling robot. That is, the coating system 1 of the present embodiment has a handling robot as a moving means for moving the workpiece.

  The handling robot moves two workpieces. First, an unpainted workpiece loaded in the load / unload area 2901 and transported to the standby area 2902 by the chain conveyor 7 is applied to the painting table 3. Move to.

  In addition, the handling robot 28 moves the workpiece in the painting area 4 b on the painting table 3 after the primary painting or secondary painting is finished, to the standby area 30 in the primary drying area 18 or the secondary drying area 19.

  Further, the handling robot 28 moves the work in the waiting area 30 in the primary drying area 18 to the coating table 3 for secondary coating after the primary drying process is completed.

  Furthermore, the handling robot 28 moves the workpiece in the standby area 30 in the secondary drying area 19 to the standby area 2902 in the transfer area 6 after the secondary drying process is completed.

  Next, a workpiece coating method using the coating system 1 according to the present embodiment configured as described above will be described. In the load / unload area 2901 in the transfer area 6, workpieces sequentially arrive by the movement of the chain conveyor 7. Each of the fixing jigs 9 is engaged with an aluminum wheel as a workpiece, and the workpiece is loaded onto the coating system 1 of this embodiment.

  Next, when the loaded unpainted work reaches the standby area 2902 of the transfer area 6, the handling robot 28 attaches the work provided in the work area 4 which is the setting area 4b in the painting table 3. Move to section 301.

  Next, the coating table 3 is rotated halfway to set the setting area 4b in which the unpainted work is moved to the painting area 4a, thereby moving the unpainted work to a paintable area.

  In this state, the primary coating material is sprayed from the spray gun 5a for primary coating toward the unpainted workpiece in the work area 4 which has become the coating area 4a, thereby performing primary coating of the workpiece. .

  Next, the work which has finished primary coating in this way is moved to the primary drying area 18 and is primarily dried by induction heating.

  That is, two workpieces 31 in the painting area 4a in the painting table 3 are moved to the standby area 30 in the primary drying area 18, and then the chain conveyor in the primary drying area 18 is moved by two workpieces. Two workpieces in the waiting area 30 are moved into the heating chamber 20.

  Then, as shown in FIG. 3, the shaft side pressing member 17 is disposed above the motor side pressing member 27. In this state, the air cylinder 24 is driven, and the work 31 is moved to the heating coil 23 by the above-described mechanism. The work 31 is heated by induction heating, and the paint is dried.

  In the coating system of the present embodiment, as described above, four work locking jigs can be accommodated in the heating chamber 20, and one work 31 is induction-heated twice for 120 seconds each. It is said. In the heating coil 23, the work 31 is heated to 150 to 160 degrees by induction heating.

  That is, in the coating method of this embodiment, the chain conveyor 7 is moved by two workpieces while two workpieces are waiting in the standby area 30, and drying by induction heating is performed at the position by the above-described mechanism. After that, the chain conveyor 7 is again moved by two workpieces, and drying by induction heating by the above-described mechanism is performed again for 120 seconds at that position. Then, heat drying by induction heating for a total of 240 seconds per one work is performed.

  Next, the work that has been heat-dried by induction heating in this way is moved into the heat-retaining room 21 as the chain conveyor 7 moves, and is kept warm by being exposed to hot air in the heat-retaining room 21. .

  And the workpiece | work heat-retained in the heat retention room 21 comes out of the heat retention room 21 with the movement of the chain conveyor 7, and is moved to the cooling area | region 22, In this cooling area | region 22, 60-70 are forced by a blower. Cooled every time.

  Thus, the drying process is finished, and the work after the drying process is moved to the standby area 30 by the movement of the chain conveyor 7.

  Next, the workpiece for which the primary drying process has been completed in this manner is moved by the handling robot 28 to the workpiece mounting portion 301 provided in the work area 4 which is the setting area 4b in the painting table 3.

  Then, in this state, the coating table 3 is rotated halfway to set the setting area 4b in which the workpiece after primary drying is moved to the painting area 4a, thereby moving the workpiece after primary drying to an area where painting is possible.

  Then, the paint for secondary coating is sprayed from the spray gun 5b for secondary coating toward the workpiece after the primary drying in the work area 4 which has become the coating area 4a, whereby secondary coating of the workpiece 31 is performed. Do.

  Next, the work after the completion of the secondary coating is moved to the secondary drying area 19 and is secondarily dried by induction heating.

  That is, after two workpieces 31 in the painting area 4a on the painting table 3 are moved to the standby area 30 in the secondary drying area 19, the chain conveyor in the secondary drying area 19 is moved by two workpieces, Two workpieces 30 are moved into the heating chamber 20.

  And like the above-mentioned, the workpiece | work in the heating chamber 20 is heated twice by induction heating, and a coating material is dried, Then, this workpiece | work passes the thermal insulation 21 and the cooling area | region 22 by the movement of the chain conveyor 7. Then, move to the waiting area 30.

  Next, the work in the standby area 30 of the secondary drying area 19 after the secondary drying process is completed is moved to the standby area 2902 in the transfer area 6 by the handling robot 8.

  Next, the work in the waiting area 2902 is transported to the load / unload area 2901 by the movement of the chain conveyor 7, and the work is taken out from the transport area 6 in the load / unload area 2901, A new unpainted workpiece is locked to the empty workpiece locking jig 9.

  In the coating method of this embodiment, two unpainted workpieces are sequentially locked to the workpiece locking jig 9 that is emptied in the load / unload area 2901, and the above-described workpieces are held on the workpiece. The coating is completed by performing primary coating, primary drying, secondary coating and secondary drying according to the process, and then unloading.

In this embodiment, the handling robot 28 is
(1) an operation of moving an unpainted workpiece in the standby area 2902 in the transfer area 6 to the setting area 4a in the painting table 3;
(2) an operation of moving the primary painted workpiece in the painting area 4a of the painting table 3 to the standby area 30 of the primary drying area 18,
(3) The operation of moving the primary dry processed workpiece in the standby area 30 of the primary drying area 18 to the setting area 4b of the coating table 3 for secondary coating,
(4) An operation of moving the secondary painted workpiece in the painting area 4a of the painting table 3 to the standby area 30 of the secondary drying area 19,
(5) Since the operation of moving the secondary dry processed workpiece in the standby area 30 of the secondary drying area 19 to the standby area 2902 in the transfer area 6 is performed, in order to ensure this operation In this embodiment, the moving speed of each chain conveyor 7 is adjusted.

  Thus, in the coating system of this embodiment and the coating method using the coating system, it is installed in a painting table having a work area that can be a painting area or a setting area, and a work area that is a painting area in the painting table. A plurality of paint spraying means for spraying the paint toward the work is provided, and it is possible to perform coating with a plurality of kinds of paints on one coating table. Along with this, a plurality of drying areas are provided, and the workpiece after painting is moved to each drying area using a handling robot. Therefore, it is not necessary to separately incorporate a plurality of painting processes in one painting line, and the entire painting line can be reduced in size.

  At that time, in the coating system of the present embodiment, the drying after the coating is not the hot air drying but the heating drying using induction heating, so that the drying time can be shortened. It can be shortened.

  In the above description, the coating system is used to coat a workpiece with two coats. However, the coating system and the coating method of the present invention are not necessarily limited to two coats. Accordingly, by increasing the number of spray guns as the paint spraying means and increasing the number of drying areas, it is possible to coat the workpiece with three or more coats.

  Moreover, although the case where a workpiece | work is conveyed using a chain conveyor was demonstrated in the above-mentioned description, it does not necessarily need to use a chain conveyor and any means can be used if it can convey a workpiece | work.

  Furthermore, the form of workpiece | work latching is not limited to the above-mentioned form, Any form may be sufficient if a workpiece | work can be latched.

  In the painting system and the painting method of the present invention, in painting a workpiece that requires multiple coatings, the entire painting apparatus can be reduced in size and the painting time can be shortened. It is applicable to all of the above.

1 painting system 2 painting area 3 painting table 4 work area 4a painting area 4b setting area 5 spray gun 5a spray gun for primary painting 5b spray gun for secondary painting 6 transport area 7 chain conveyor 8 chain 9 work locking jig 10 movement Disc 11 Guide 12 Disc support roller 13 Jig body 14 Fixed side body 15 Movable side body 1501 Connection portion 1502 Placement portion 1503 Insertion hole 16 Shaft 17 Shaft side pressing member 18 Primary drying area 19 Secondary drying area 20 Heating chamber 21 Storage room 22 Cooling region 23 Heating coil 24 Air cylinder 25 Movable part 26 Motor 27 Motor side pressing member 28 Handling robot 2901 Loading / unloading area 2902 Standby area 30 in the transport area 30 Standby air in the drying area A 31 work (aluminum wheel)

Claims (4)

A vehicle wheel coating system for use in painting a vehicle wheel that requires a plurality of painting and drying processes,
A painting table (3) having a work area (4) which can be set as a painting area (4a) or a setting area (4b) and in which one or a plurality of works (31) can be set, and the painting table (3) A coating area (2) comprising a plurality of paint spraying means (5) for spraying paint toward the work (31) installed in the work area (4) which has become the paint area (4a) in
A plurality of drying areas (18, 19) for drying the work (31) coated in the coating area (2) by induction heating;
Moving means (28) for moving the workpiece (31),
The unpainted work (31) is moved to the work area (4) which is the setting area (4b) in the painting table (3), and the work area (4) which is the setting area (4b) is moved to the painting area. (4a), paint is sprayed from the paint spraying means (5) onto the work (31) in the work area (4) which has become the paint area (4a), and primary work of the work is performed,
The work (31) that has been subjected to the primary coating is moved to the drying area (18), and is primarily dried by induction heating,
The work (31) after the primary drying is moved to the work area (4) which is the setting area (4b) in the coating table (3), and the work area (4) which is the setting area (4b) is moved. Secondary coating of the work (31) by spraying the paint from the paint spraying means (5) onto the work (31) in the work area (4) which is the paint area (4a). And
The workpiece (31) that has been subjected to the secondary coating is moved to the drying area (19) and subjected to secondary drying by induction heating,
Thereafter, the painting and drying of the workpiece are repeated until the required number of paintings and drying are completed,
A vehicle wheel painting system characterized in that a necessary number of finished painting and drying works can then be removed from the line.   The vehicle wheel coating system according to claim 1, wherein the moving means is a handling robot.   The moving means moves the loaded workpiece to the painting table (3), moves the workpiece on the painting table (3) to the drying area (18, 19), and moves the workpiece in the drying area (18, 19). The vehicle wheel painting system according to claim 1 or 2, characterized in that it can be moved to the painting table (3) or an unloading location. A method for painting a vehicle wheel using the painting system according to claim 1,
The unpainted work (31) is moved to the work area (4) which is the setting area (4b) in the painting table (3), and the work area (4) which is the setting area (4b) is moved to the painting area. (4a), paint is sprayed from the paint spraying means (5) onto the work (31) in the work area (4) which has become the paint area (4a), and primary work of the work is performed,
The workpiece (31) that has been subjected to the primary coating is moved to the drying area (18), and is primarily dried by induction heating,
The work (31) after the primary drying is moved to the work area (4) which is the setting area (4b) in the coating table (3), and the work area (4) which is the setting area (4b) is moved. Secondary coating of the work (31) by spraying the paint from the paint spraying means (5) onto the work (31) in the work area (4) which is the paint area (4a). And
The workpiece (31) that has been subjected to the secondary coating is moved to the drying area (19), and is secondarily dried by induction heating,
Thereafter, the painting and drying of the workpiece are repeated until the required number of paintings and drying are completed,
A method for painting a vehicle wheel, characterized in that, after that, a required number of painted and dried workpieces can be removed from the line.

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