JP4759490B2 - Paint supply device and paint supply method for coating system - Google Patents

Description

  The present invention relates to a coating material supply apparatus and a coating material supply method for a coating system that sequentially coats the vehicle body via a plurality of coating stations arranged along the conveyance direction of the vehicle body.

  2. Description of the Related Art In a painting line for an object to be coated, for example, an automobile body, various painting processes such as an undercoating process, an intermediate coating process, an overcoating process, and an overcoating clear coating process are performed on the vehicle body.

  In this type of painting line, a painting robot disposed at each painting station employs a configuration in which a paint container (cartridge) filled with a desired paint is detachably attached. This is because, for example, by filling the paint container with an amount of paint that can be used for painting one vehicle body, waste of paint can be reduced during color change, which is efficient.

  For example, in the color changing device for a painting robot disclosed in Patent Document 1, a paint container supply device is provided outside the painting work range within the operating range of the painting robot. The paint container supply device holds a belt-type or chain-type conveyor, and a plurality of paint containers mounted on the conveyor, and each paint container is fitted to the arm of the painting robot body at a predetermined position. Robot.

Japanese Patent Laid-Open No. 60-122073 (FIG. 3)

  Recently, due to the increase in the number of paint colors on the vehicle body, the color change operation of the paint accompanying the change of the paint color has been performed relatively frequently. At that time, the above-described color changing device can cope with the case by filling the paint container with an amount of paint that can be used for painting one vehicle body.

  However, each paint container has to be filled with an amount of paint that can be used for painting one vehicle body, which complicates the work of filling the paint. In addition, it is necessary to replace the paint container for each vehicle body, and there is a problem that the efficiency of the entire painting operation cannot be easily achieved. Furthermore, it may not be possible to respond quickly to changes in coating conditions.

  The present invention solves this type of problem, and it is possible to reduce the waste of paints associated with color change and to achieve an economical and efficient painting operation while reducing the size of the entire equipment. An object of the present invention is to provide a paint supply apparatus and a paint supply method for a paint system that can be applied.

  The present invention relates to a coating material supply apparatus for a coating system that sequentially coats the vehicle body via at least a first coating station and a second coating station arranged along the conveyance direction of the vehicle body.

  The paint supply device is capable of transporting a paint container to a transport mechanism extending along the transport direction of the vehicle body and at least the first coating device of the first coating station and reciprocally movable by the transport mechanism. The paint container in which the paint remains from the member and at least the first coating apparatus can be collected, and the paint container in which the paint remains can be transported to the second coating apparatus in the second coating station; A reciprocating second conveying member; and a paint container station for exchanging the paint container or filling the paint container with the paint.

  Moreover, it is preferable to provide the connection member which can connect the 1st conveyance member and the 2nd conveyance member at the arbitrary positions of a conveyance mechanism, respectively.

  Furthermore, the present invention provides a coating material supply apparatus for a coating system for sequentially coating the vehicle body via at least the first painting station, the second painting station, and the third painting station arranged along the conveyance direction of the vehicle body. It is about.

  The paint supply device is capable of transporting a paint container to a transport mechanism extending along the transport direction of the vehicle body and at least the first coating device of the first coating station and reciprocally movable by the transport mechanism. The paint container in which the paint remains from the member and at least the first coating apparatus can be collected, and the paint container in which the paint remains can be transported to the second coating apparatus in the second coating station; Replacement of the second transport member that can reciprocate, the third transport member that can transport the paint container to at least the third coating device of the third coating station, and that can reciprocate by the transport mechanism, and the paint container Alternatively, a paint container station for filling the paint container with the paint is provided.

  Furthermore, it is preferable that the first transport member, the second transport member, and the third transport member are each provided with a connecting member that can be connected at an arbitrary position of the transport mechanism.

  The present invention also relates to a coating material supply method for a coating system that sequentially coats the vehicle body via at least a first coating station and a second coating station arranged along the conveyance direction of the vehicle body.

  The paint supply method includes a step of transporting a paint container to the first coating device of the first coating station, and after collecting the paint container with the paint remaining from the first coating device, the second coating of the second coating station. And transporting the paint container in which the paint remains in the apparatus.

  Furthermore, the paint supply method according to the present invention transports the paint container to the first coating device of the first coating station via the first transport member that can reciprocate by a transport mechanism extending along the transport direction of the vehicle body. And after recovering the paint container in which the paint remains from the first coating device via a second transport member that can reciprocate by the transport mechanism, and the paint remains in the second coating device of the second coating station Transporting the paint container.

  Furthermore, the paint supply method according to the present invention transports the paint container to the first coating device of the first coating station via the first transport member that can reciprocate by a transport mechanism extending along the transport direction of the vehicle body. And collecting the paint container in which the paint remains from the first coating device via a second transport member that can reciprocate by the transport mechanism, and then the paint is applied to the second coating device of the second coating station. A step of transporting the remaining paint container, and a step of transporting the paint container to the third coating device of the third coating station via a third transport member that can reciprocate by the transport mechanism.

  In the present invention, when the color of the paint is changed, the paint container used in the upstream first coating apparatus is recovered, and then the paint container in which the paint remains is transferred to the second coating apparatus on the downstream side. is doing. Therefore, since the paint remaining in the paint container is used for the painting operation in the second painting apparatus, the wasteful waste paint can be greatly reduced, which is economical.

  In the present invention, the paint container can be transported and collected with respect to the third coating device by the third transport member. For this reason, it is possible to efficiently cope with solid and metallic paints when applying twice, and with pearl paints when applying different color paints.

  FIG. 1 is a schematic configuration explanatory diagram of a coating system 12 to which a paint supply apparatus 10 according to the first embodiment of the present invention is applied.

  The painting system 12 includes a first painting station 18 and a second painting station 20 that are arranged along a painting line 16 that extends in the conveyance flow direction (arrow A direction) of the vehicle body 14. The first painting station 18 performs the inner plate coating of the vehicle body 14, while the second painting station 20 performs the outer plate coating of the vehicle body 14.

  The first painting station 18 includes a first inner plate painting robot (first painting device) 22a and a second inner plate painting robot (first painting device) 22b, which are arranged on both sides of the vehicle body 14 in the vehicle width direction. The first inner plate painting robot 22a and the second inner plate painting robot 22b are movable along a conveyance path 24 extending in the direction of arrow A, and are detachably mounted with a paint container 26. A trunk opener 28 and a hood opener 30 are provided in the transport path 24.

  The second painting station 20 includes a first outer plate painting robot (second coating device) 32a and a second outer plate painting robot (second coating device) 32b, which are arranged on both sides of the vehicle body 14 in the vehicle width direction. The first outer plate painting robot 32a and the second outer plate painting robot 32b are movable along the conveyance path 34 extending in the direction of arrow A, and the paint container 26 is detachably mounted. A backup station 36 is provided downstream of the second painting station 20.

  The coating material supply apparatus 10 includes a transport mechanism 38 that extends along the transport direction of the vehicle body 14 and a first transport member that, for example, includes two paint containers 26 and can reciprocate in the direction of arrow A by the transport mechanism 38. 40, for example, a second transport member 42 that is mounted with the two paint containers 26 and can be reciprocated in the direction of arrow A by the transport mechanism 38, and the paint container 26 is filled with paint or the paint container 26 And a paint filling station (paint container station) 44 for replacement.

  The transport mechanism 38, the first transport member 40, the second transport member 42, and the paint filling station 44 are disposed on both sides of the vehicle body 14 in the vehicle width direction. Hereinafter, in order to simplify the description, the configuration and operation on one side will be described.

  The first conveying member 40 is capable of conveying the paint container 26 to at least the first inner plate painting robot 22a and the second inner plate painting robot 22b of the first painting station 18. The second conveying member 42 collects the paint container 26 where the paint remains from at least the first inner plate painting robot 22a and the second inner plate painting robot 22b, and the first outer plate painting robot 32a and the second outer plate painting robot 32a of the second painting station 20. 2 The paint container 26 in which the paint remains can be conveyed to the outer skin coating robot 32b. Each of the first transport member 40 and the second transport member 42 can mount two paint containers 26.

  As shown in FIG. 2, the transport mechanism 38 includes a belt conveyor 48 that extends between the pulleys 46 a and 46 b and extends in the arrow A direction. When the pulley 46a rotates in the arrow X direction (forward rotation direction), the upper side of the belt conveyor 48 travels in the arrow A direction, while the pulley 46a rotates in the arrow Y direction (reverse rotation direction). The upper side of the conveyor 48 travels in the arrow B direction opposite to the arrow A direction.

  At both end positions of the belt conveyor 48, a first stop member for stopping the first transport member 40 at the tip position in the direction of arrow B, that is, the second transport member 42 at a retracted position that does not interfere with the movement of the first transport member 40. 50 a is provided, and a second stop member 50 b for stopping the first conveying member 40 corresponding to the paint filling station 44 is provided at the tip position in the arrow B direction.

  Between the first stop member 50a and the second stop member 50b, intermediate stop members (connecting members) 52a to 52e are disposed above the belt conveyor 48 so as to freely advance. The intermediate stop members 52a to 52e are configured to be able to advance and retreat via an actuator such as a cylinder. Instead of the intermediate stop members 52a to 52e, a connecting member that can be connected to the belt conveyor 48 at an arbitrary position on the belt conveyor 48 may be provided on the first conveying member 40 and the second conveying member 42 itself. .

  As shown in FIG. 1, between the transport mechanism 38 and the first coating station 18, the paint container 26 is placed between the first inner plate coating robot 22 a and the second inner plate coating robot 22 b and the first transport member 40. A paint container replacement robot 54a is disposed for delivery. Similarly, between the transport mechanism 38 and the second coating station 20, the paint container 26 is placed between the first skin coating robot 32 a and the second skin coating robot 32 b, the first transport member 40, and the second transport member 42. A paint container exchanging robot 54b is provided for delivery between the two.

  The operation of the coating material supply apparatus 10 configured as described above will be described below in relation to the coating system 12.

  First, in the first painting station 18, when the vehicle body 14 is transported along the painting line 16, the vehicle body 14 is opened through the trunk opener 28 and the hood opener 30, and the trunk and the hood are opened. Inner plate painting with a desired paint color is sequentially performed by the first inner plate painting robot 22a and the second inner plate painting robot 22b. The vehicle body 14 that has been subjected to the inner plate coating is transported in the direction of arrow A along the coating line 16, and is carried into the second coating station 20.

  In the second painting station 20, the outer skin painting with the same color as the first painting station 18 is sequentially performed by the second outer skin painting robot 32a and the second outer skin painting robot 32b. The vehicle body 14 after the outer plate coating is sent to the backup station 36 along the coating line 16 and then transferred to the next process.

  Here, a small amount of paint remains in the used paint container 26 returned to the paint filling station 44. Thereby, when the condition setting is changed in the course of the coating process, or when the paint is discharged by air blowing at the time of stopping, the paint is not short. In addition, even when an accuracy error is caused in the paint supply amount and the paint exceeding the set amount is discharged, it is possible to satisfactorily prevent the paint shortage.

  On the other hand, when a paint of a different color is replaced with a used paint container 26 in which a small amount of paint remains, it is necessary to discard the paint remaining in the paint container 26 during cleaning. For this reason, if the frequency | count of washing | cleaning of the coating material container 26 can be reduced, the quantity of the coating material wastefully discarded can be reduced.

  By the way, in 1st Embodiment, when changing the color by changing the coating color of the vehicle body 14, by conveying the paint container 26 in use in the first coating station 18 to the second coating station 20, The painting operation is continuously performed using the paint remaining in the paint container 26.

  Specifically, a relatively large amount (approximately half) of paint remains in each paint container 26 of the first inner plate painting robot 22a and the second inner plate painting robot 22b arranged in the first painting station 18. When the two paint containers 26 filled with the paint color to be newly used are placed on the first transport member 40, the first transport member 40 is connected to the arrow Y of the pulley 46a. It is conveyed in the direction of arrow B via the belt conveyor 48 under the rotating action in the direction.

  For this reason, as shown in FIG. 3, the second transport member 42 contacts the first stop member 50 a and is maintained in a standby state, while the first transport member 40 is transported to the first coating station 18. . The first transport member 40 is intermediately stopped under the driving action of the intermediate stop member 52a at a position corresponding to the first inner plate coating robot 22a.

  In this state, one paint container 26 on the first conveying member 40 is grasped and taken out by the paint container replacement robot 54a, and a relatively large amount of the previous color paint attached to the first inner plate painting robot 22a. Is replaced with a paint container 26 (hereinafter also referred to as a residual paint container 26a). The remaining paint container 26a is once arranged at a predetermined position.

  Next, when the pulley 46a is rotated in the arrow X direction, the first conveying member 40 and the second conveying member 42 are moved in the arrow A direction via the belt conveyor 48. As shown in FIG. 4, the first conveying member 40 is intermediately stopped corresponding to the second inner plate coating robot 22b under the driving action of the intermediate stopping member 52c, while the second conveying member 42 is intermediately stopped. Under the driving action of the member 52b, an intermediate stop is made corresponding to the first inner plate coating robot 22a.

  The remaining paint container 26a is mounted on the second transport member 42 by the paint container replacement robot 54a, and the other paint container 26 on the first transport member 40 is taken out. The paint container 26 is replaced with the remaining paint container 26a used in the second inner plate painting robot 22b, and the remaining paint container 26a is temporarily arranged at a predetermined arrangement position.

  Further, as shown in FIG. 5, when the intermediate stop member 52 c is retracted from the stop position, the first transport member 40 is transported to the second coating station 20 under the running action of the belt conveyor 48. The first conveying member 40 is intermediately stopped corresponding to the first outer plate coating robot 32a under the driving action of the intermediate stopping member 52d. On the other hand, the second conveyance member 42 is in the middle of conveyance in the direction of arrow A via the belt conveyor 48.

  In the first transport member 40, after the substantially empty paint container 26 taken out by the paint container replacement robot 54b is mounted in advance, the stopped state by the intermediate stop member 52d is released. For this reason, the 1st conveyance member 40 is connected to the belt conveyor 48, and moves to the 2nd outer plate coating robot 32b side.

  As shown in FIG. 6, the first transport member 40 is intermediately stopped under the locking action of the intermediate stop member 52e, while the second transport member 42 is in the second position under the locking action of the intermediate stop member 52c. The intermediate stop is performed corresponding to the plate coating robot 22b. In the first conveying member 40, a substantially empty paint container 26 discharged from the second outer plate painting robot 32b is mounted, and in the second conveying member 42, the remaining paint removed from the second inner plate painting robot 22b. A container 26a is mounted.

  Next, as shown in FIG. 7, when the intermediate stop members 52e and 52c are retracted, the second transport member 42 is transported in the direction of arrow A and stopped by the second stop member 50b, while the second transport member 42 is transported. The member 42 is conveyed to the second coating station 20 and is intermediately stopped corresponding to the first outer plate coating robot 32a under the action of the intermediate stop member 52d.

  One residual paint container 26a mounted on the second transport member 42 is taken out by the paint container replacement robot 54b and then attached to the first outer plate paint robot 32a. Further, as shown in FIG. 8, the second conveying member 42 moves in the direction of arrow A when the intermediate stop member 52d is retracted, and corresponds to the second outer plate coating robot 32b via the intermediate stop member 52e. Stopped in the middle.

  The other remaining paint container 26a on the second transport member 42 is taken out by the paint container replacement robot 54d and then attached to the second outer plate painting robot 32b. On the other hand, the substantially empty paint container 26 on the first conveying member 40 is filled with a paint of a desired paint color by the paint filling station 44 or a new paint container 26 filled with a paint of a desired paint color. Exchanged.

  As described above, in the first embodiment, when the color of the paint to be applied to the vehicle body 14 is changed, the paint container 26 that is used in the first painting station 18 on the upstream side and the previous color paint remains is the first container. 2 After being collected via the conveying member 42, it is conveyed to the second painting station 20 on the downstream side.

  Accordingly, the remaining paint container 26a is attached to the first outer plate painting robot 32a and the second outer plate painting robot 32b disposed in the second painting station 20 and used for painting the vehicle body 14. For this reason, it is possible to greatly reduce the wasteful paint, which is economical.

  FIG. 9 is an explanatory diagram of a schematic configuration of a coating system 62 to which the paint supply device 60 according to the second embodiment of the present invention is applied. In addition, the same referential mark is attached | subjected to the component same as the coating material supply apparatus 10 and the coating system 12 which concern on 1st Embodiment, and the detailed description is abbreviate | omitted.

  The painting system 62 includes a first painting station 18, a second painting station 20, and a third painting station 64 that are arranged along the conveyance flow direction (arrow A direction) of the vehicle body 14. The third coating station 64 is used to apply the same color paint twice to the vehicle body 14 that has been subjected to the outer plate coating at the second coating station 20 when a solid or metallic paint is used as the paint. On the other hand, when a pearl-based paint is used, it is a station for performing an outer plate coating using a paint different from the second coating station 20.

  The third coating station 64 includes a third outer plate coating robot (third coating device) 66a and a fourth outer plate coating robot (third coating device) 66b, which are disposed on both sides of the vehicle body 14 in the vehicle width direction.

  For example, two paint containers 26 are mounted on the transport mechanism 38, and the paint containers 26 can be transported to at least the third outer plate painting robot 66 a and the fourth outer plate painting robot 66 b of the third painting station 64. At the same time, a third transport member 68 that can be reciprocated by the transport mechanism 38 is provided.

  A first paint filling station 44 a and a second paint filling station 44 b for filling the paint container 26 (or replacing the paint container 26) are provided in the vicinity of the tip of the transport mechanism 38 in the direction of arrow A. The third coating station 64 is provided with a paint container replacement robot 54c for attaching and detaching the paint container 26.

  As shown in FIG. 10, a third stop member 50c is disposed in the vicinity of the second stop member 50b so as to be able to advance and retreat. In the belt conveyor 48, intermediate stop members 52f and 52g are disposed at predetermined positions corresponding to the third coating station 64, respectively.

  The operation of the paint supply device 60 configured as described above will be described below in relation to the paint supply method according to the second embodiment.

  When the paint color of the vehicle body 14 is changed in the coating system 62, first, as shown in FIG. 11, the first transport member 40, the second transport member 42, and the third transport member are disposed via the transport mechanism 38. 68 moves in the direction of arrow B. Meanwhile, the third transport member 68 carries the two paint containers 26 filled with the desired color paint at the second paint filling station 44b.

  When the third transport member 68 is carried into the third coating station 64, the third transport member 68 is intermediately stopped corresponding to the fourth outer plate coating robot 66b under the driving action of the intermediate stop member 52g. . At the third coating station 64, one paint container 26 on the third transport member 68 is taken out via the paint container replacement robot 54c, and the used paint container 26 is placed on the third transport member 68. The At that time, in the first skin coating robot 32a, the color change is performed by exchanging the paint container 26 filled with the desired color paint and the paint container 26 in which a small amount of the used paint remains. ing.

  Next, after the intermediate stop member 52g is retracted and the third transport member 68 is transported by a predetermined distance in the direction of arrow B, the third transport member 68 is transferred to the third outer plate coating robot 66a by the intermediate stop member 52f. Correspondingly, an intermediate stop is performed (see FIG. 12). In the third conveying member 68, the other paint container 26 filled with a new paint is taken out, and this paint container 26 is replaced with the used paint container 26 attached to the third outer plate painting robot 66a. At the same time, the color is changed.

  On the other hand, in the first inner plate coating robot 22a, as shown in FIG. 13, the first transport member 40 is intermediately stopped by the intermediate stop member 52a. Then, after one paint container 26 on the first transport member 40 is taken out from the first transport member 40, it is replaced with a used paint container 26 attached to the first inner plate coating robot 22a. Color change is started. The operations of the first transport member 40 and the second transport member 42 are the same as those in the first embodiment, and will be schematically described below.

  As shown in FIG. 14, when the transport mechanism 38 is rotated forward (in the direction of the arrow X), the first transport member 40 and the second transport member 42 are transported corresponding to the first coating station 18 and stopped in the middle. Is done. Thus, the paint container 26 is supplied to the second inner plate painting robot 22b, while the remaining paint container 26a is placed on the second transport member 42.

  Further, as shown in FIG. 15, the first transport member 40 is transported to the second coating station 20, and color change in the second inner plate coating robot 22 b and the second outer plate coating robot 32 b is started.

  Next, as shown in FIG. 16, after two substantially empty paint containers 26 are placed on the first transport member 40 and two remaining paint containers 26a are placed on the second transport member 42, As shown in FIG. 17, the first transport member 40 is stopped by the third stop member 50 c, while the second transport member 42 is carried into the second coating station 20. The remaining paint containers 26a placed on the second transport member 42 are sequentially supplied to the first outer plate painting robot 32a and the second outer plate painting robot 32b.

  On the other hand, in the first paint filling station 44a and the second paint filling station 44b, a paint container 26 for filling a paint of a desired color is arranged as necessary. The paint container 26 filled with the paint is replaced with a substantially empty paint container 26 disposed on the first transport member 40 and the third transport member 68.

  Thus, in the second embodiment, the remaining paint container 26a used in the first painting station 18 is transported to the second painting station 20 at the time of the color change accompanying the change in the painting color of the vehicle body 14 and is sent to the vehicle body 14. It is used for the outer panel coating of For this reason, the effect similar to 1st Embodiment is acquired, such as being able to reduce significantly the coating material discarded wastefully.

  In addition, the second embodiment includes the third transport member 68, and the paint container 26 can be transported and collected to the third coating station 64 via the third transport member 68. Accordingly, when the same paint is applied twice at the third coating station 64 in the case of solid and metallic paints, or when different color paints are applied at the third coating station 64 in the case of pearl paints, Each has the advantage of being able to respond efficiently.

  In the first and second embodiments, the first transport member 40, the second transport member 42, and the third transport member 68 are configured to be able to reciprocate by placing two paint containers 26, respectively. However, the present invention is not limited to this. For example, as shown in FIG. 19, the first transport members 40a and 40b, the second transport members 42a and 42b, and the third transport members 68a and 68b that can transport and collect a single paint container 26, respectively. It may be provided individually.

BRIEF DESCRIPTION OF THE DRAWINGS It is schematic structure explanatory drawing of the coating system with which the coating material supply apparatus which concerns on the 1st Embodiment of this invention is applied. It is side surface explanatory drawing of the said coating material supply apparatus. It is explanatory drawing of the coating material supply method which concerns on 1st Embodiment. It is explanatory drawing of the said coating material supply method. It is explanatory drawing of the said coating material supply method. It is explanatory drawing of the said coating material supply method. It is explanatory drawing of the said coating material supply method. It is explanatory drawing of the said coating material supply method. It is schematic structure explanatory drawing of the coating system with which the coating material supply apparatus which concerns on the 2nd Embodiment of this invention is applied. It is side surface explanatory drawing of the said coating material supply apparatus. It is explanatory drawing of the coating material supply method which concerns on 2nd Embodiment. It is explanatory drawing of the said coating material supply method. It is explanatory drawing of the said coating material supply method. It is explanatory drawing of the said coating material supply method. It is explanatory drawing of the said coating material supply method. It is explanatory drawing of the said coating material supply method. It is explanatory drawing of the said coating material supply method. It is explanatory drawing of the said coating material supply method. It is a side view of the coating material supply apparatus which concerns on the 3rd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10, 60 ... Paint supply apparatus 12, 62 ... Coating system 14 ... Car body 16 ... Coating line 18, 20, 64 ... Coating station 22a, 22b ... Inner-plate coating robot 24, 34 ... Conveyance path 26 ... Paint container 26a ... Residual paint Container 32a, 32b, 66a, 66b ... outer plate coating robot 36 ... backup station 38 ... transport mechanism 40, 40a, 40b, 42, 42a, 42b, 68, 68a, 68b ... transport member 44, 44a, 44b ... paint filling station 48 ... Belt conveyor 50a-50c ... Stop member 52a-52g ... Intermediate stop member

Claims (7)

A paint supply device for a coating system that sequentially coats the vehicle body via at least a first coating station and a second coating station arranged along the conveyance direction of the vehicle body,
A transport mechanism extending along the transport direction of the vehicle body;
A first transport member capable of transporting a paint container to at least the first coating device of the first coating station and reciprocally movable by the transport mechanism;
At least the paint container in which the paint remains can be collected from the first coating apparatus, and the paint container in which the paint remains can be transported to the second coating apparatus in the second coating station, and is reciprocated by the transport mechanism. A free second conveying member;
A paint container station for replacing the paint container or filling the paint container with paint;
A paint supply device for a coating system, comprising:   The paint supply apparatus according to claim 1, further comprising a connecting member that can connect the first transport member and the second transport member at arbitrary positions of the transport mechanism. . A paint supply apparatus for a coating system that sequentially coats the vehicle body via at least a first coating station, a second coating station, and a third coating station arranged along the conveyance direction of the vehicle body,
A transport mechanism extending along the transport direction of the vehicle body;
A first transport member capable of transporting a paint container to at least the first coating device of the first coating station and reciprocally movable by the transport mechanism;
At least the paint container in which the paint remains can be collected from the first coating apparatus, and the paint container in which the paint remains can be transported to the second coating apparatus in the second coating station, and is reciprocated by the transport mechanism. A free second conveying member;
A third transport member capable of transporting the paint container to at least a third coating device of the third coating station, and reciprocally movable by the transport mechanism;
A paint container station for replacing the paint container or filling the paint container with paint;
A paint supply device for a coating system, comprising:   4. The paint supply apparatus according to claim 3, further comprising a connecting member that can connect the first transport member, the second transport member, and the third transport member at an arbitrary position of the transport mechanism. Paint supply device for painting system. A paint supply method for a coating system that sequentially coats the vehicle body via at least a first coating station and a second coating station arranged along a conveyance direction of the vehicle body,
Transporting the paint container to the first coating device of the first coating station;
Transporting the paint container with the paint remaining to the second coating apparatus of the second coating station after recovering the paint container with the paint remaining from the first coating apparatus;
A paint supply method for a coating system, comprising: A paint supply method for a coating system that sequentially coats the vehicle body via at least a first coating station and a second coating station arranged along a conveyance direction of the vehicle body,
A step of transporting the paint container to the first coating device of the first coating station via a first transport member that is reciprocally movable by a transport mechanism extending along the transport direction of the vehicle body;
The coating material remains in the second coating device of the second coating station after the coating material container in which the coating material remains is collected from the first coating device via the second transport member that can reciprocate by the transport mechanism. A process of transporting the paint container;
A paint supply method for a coating system, comprising: A paint supply method for a coating system that sequentially coats the vehicle body via at least a first coating station, a second coating station, and a third coating station arranged along the conveyance direction of the vehicle body,
A step of transporting the paint container to the first coating device of the first coating station via a first transport member that is reciprocally movable by a transport mechanism extending along the transport direction of the vehicle body;
The coating material remains in the second coating device of the second coating station after the coating material container in which the coating material remains is collected from the first coating device via the second transport member that can reciprocate by the transport mechanism. A process of transporting the paint container;
A step of transporting a paint container to a third coating device of the third coating station via a third transport member that is reciprocally movable by the transport mechanism;
A paint supply method for a coating system, comprising:

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