JPH0717217B2 - Car painting method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating method for an automobile, for example, in which a door (opening / closing member) of the automobile is opened and painting is performed by a painting robot (painting device).

[0002]

2. Description of the Related Art Generally, in an automobile production line, when an automobile placed on a trolley stops at a painting work place on the production line, a door is opened and painting is performed by, for example, a painting robot. In this case, there have conventionally been the following two methods for opening the door. First,
In the first method, as shown in FIG. 3, the door 2 of the automobile 1 is opened by the painting robot 3 itself. When the door 2 is opened by the coating robot 3, the door 2 is fixed by the door opening and fixing device 4 in order to maintain the open position of the door 2. That is, the raising / lowering lever 5 is driven to swing upward from the floor surface, and the pressing member 6 attached to the tip end portion of the raising / lowering lever 5 is brought into contact with the inner surface side of the door 2. Then, the door 2 is fixed in the open position by pushing the door 2 completely in the opening direction by the pressing member 6. Thereafter, the interior of the automobile 1 and the door 2 are painted by the painting robot 3. On the other hand, in the second method, as shown in FIG. 4, a dedicated door opening / closing device 7 for opening / closing the door 2 is used. That is, the engagement claw 9 attached to the tip of the arm 8 is engaged with the door 2 and the door 2 is opened by moving the arm 8 along a predetermined locus. Then, by the painting robot, the car 1
During the painting work on the inside of the vehicle and on the door 2, the open state of the door 2 is maintained by the door opening / closing device 7.

[0003]

However, in the coating system as described above, the coating work is performed while the pressing member 6 and the engaging claw 9 are in contact with or engaged with the door 2. Paint also adheres to each of these parts. Then, when the same painting work is performed on another vehicle, there is a problem that the coating material adhered to each of the above-mentioned parts adheres to the door of the other vehicle, causing a coating failure.
Furthermore, the paint from the painting robot cannot be sprayed on the parts where the pressing member 6 and the engaging claws 9 come into contact with or are engaged, and the parts cannot be sprayed, which causes uneven coating. there were. Therefore, an object of the present invention is to prevent the paint from adhering to a jig that opens the door and fixes it in the open position when painting a car, and paint the entire door evenly. It is to provide a possible automobile coating method.

[0004]

In order to achieve the above object, the present invention is a coating method for an automobile in which an opening / closing member of an automobile is opened by an opening / closing device and coating is performed by a coating device. A part of the opening / closing member different from the part held by the opening / closing device is held by the opening / closing device to maintain its open state, and the opening / closing device and the opening / closing device are alternately operated to operate the opening / closing member. A coating method for an automobile, characterized in that while the open state is maintained, a portion of the opening / closing member held by the opening / fixing device and the opening / closing device is alternately coated by the coating device. ing.

[0005]

In the method for coating a vehicle according to the present invention, the opening / closing member opened by the opening / closing device for opening / closing the opening / closing member such as a door is opened by the opening / fixing device for holding a portion different from the opening / closing device. While holding, while maintaining the open state of the opening and closing member by alternately operating the opening and closing device and the opening and fixing device, to the portion of the opening and closing member held by the opening and fixing device and the opening and closing device The coating work is performed alternately by the coating device. As a result, the paint does not adhere to the portions of the opening / closing device and the opening / closing device that abut or engage with the opening / closing member, and the entire area of the opening / closing member can be coated evenly.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the accompanying drawings for the understanding of the present invention. The following embodiments are examples of embodying the present invention and are not intended to limit the technical scope of the present invention. Here, FIG. 1 is an explanatory view showing the configuration of the main part of a vehicle coating system according to an embodiment of the present invention, and FIG. 2 is a flow chart showing the operation procedure in the vehicle coating apparatus. As shown in FIG. 1, a coating apparatus for an automobile according to this embodiment includes a door opening / closing device 10 for holding and opening a door 2 of the automobile 1.
And the door 2 opened by the door opening / closing device 10.
A door opening and fixing device 11 that holds a portion different from the door opening and closing device 10 and maintains the opened state, and the door opening and closing device 10 and the door opening and fixing device 11 are alternately operated to open the door. The door opening and fixing device 11 while maintaining the state
And a control device 19 for alternately performing a coating operation on a portion of the door 2 held by the door opening / closing device 10 by, for example, a coating robot (not shown). The door opening / closing device 10 includes an arm 13 slidable in a vertical direction with respect to a base 15 and swingable in a plane parallel to the opening / closing direction of the door 2, and a tip portion of the arm 13 is provided. An arm 12 that can swing in the same plane as the swing direction of the arm 13 is attached to the. Further, an engaging claw 14 that is fitted and inserted into the sash portion 16 above the door 2 is attached to the tip of the arm 12. The door 2 is opened or closed by engaging the engaging claw 14 with the sash portion 16 and swinging the arms 12 and 13 along a predetermined locus. In the door opening fixing device 11,
The raising / lowering lever 17 that can be raised and lowered with respect to the floor is provided, and the pressing member 18 is provided on the free end side of the raising / lowering lever 17.
Is attached. The door opening / closing device 10
The pressing member 18 is brought into contact with the lower portion of the rear surface of the door 2 opened by the above, whereby the open state of the door 2 is maintained. The control device 10 includes the door opening / closing device 10
And a memory (not shown) for storing a program for controlling the door opening and fixing device 11.

Next, the processing procedure for coating with the coating apparatus will be described with reference to FIG.
In the figure, S1, S2, ... Show each operation step. First, when the automobile 1 placed on a trolley (not shown) is stopped at a predetermined painting work place on the production line, the door opening / closing device 1
The engaging claw 14 of 0 is fitted and inserted into the sash portion 16 of the door 2. The doors 2 are opened by swinging the arms 12 and 13 along a predetermined locus (S1). Subsequently, the door opening / closing device 10 maintains the open state of the door 2, and painting is performed on the inside of the automobile 1 and the lower portion of the door 2 by a painting robot (not shown) (S2). When the painting work for the lower part of the door 2 is completed (S3), the raising / lowering lever 17 of the door opening / securing device 11 is driven to swing upward, and the pressing member 18 is pressed against the lower part of the door 2, The open state of the door 2 is continuously maintained (S4). When the open state of the door 2 is maintained by the door opening / securing device 11, the door opening / closing device 10 retracts to a predetermined position (S5), and the upper part of the door 2 and the sash part 16 are painted by the painting robot. Is performed (S6). Incidentally, the above step S
While the processing in S4 and S5 is being performed, the painting robot is controlled so as to perform painting on other parts without stopping. When the painting work on the upper portion of the door 2 and the sash portion 16 is completed as described above (S
7), the engaging claws 14 of the door opening / closing device 10 are re-inserted into the sash portions 16 of the door 2 (S8). afterwards,
The raising / lowering lever 17 of the door opening / securing device 11 is retracted to the initial position (S9). When this retracting operation is completed, the door 2 is closed by the door opening / closing device 10 (S10).
After that, the engaging claws 14 of the door opening / closing device 10 are retracted to the initial position (S11), and the painting work of the automobile 1 at this stage is completed. Since the coating system according to the present embodiment is configured as described above, the engagement claw 14 of the door opening / closing device 10 for fixing the door 2 in the open position and the pressing member 18 of the door opening / fixing device 11 are currently coated. Since the coating work is performed while alternately holding the non-placed portions and maintaining the door 2 in the open state, the coating material does not adhere to the engaging claws 14 and the pressing members 18. As a result, in a subsequent painting operation for another vehicle, the problem that the paint adheres to the door of the other vehicle and causes a painting error is avoided. At the same time, the entire back surface of the door 2 can be painted evenly.

[0008]

As described above, the coating method according to the present invention is a coating method for an automobile, in which the opening / closing member of the automobile is opened by the opening / closing device and coating is performed by the coating device. A part of the member different from the part held by the opening / closing device is held by the opening and fixing device to maintain the open state, and the opening and closing device and the opening and fixing device are alternately operated to open the opening and closing member. A coating method for an automobile is characterized in that the coating operation is alternately performed on the part of the opening / closing member held by the opening / closing device and the opening / closing device while maintaining the same. Therefore, when painting an automobile, it is possible to prevent the paint from adhering to the jig that opens and closes the opening / closing member and fixes it in the open position, and to apply the entire opening / closing member evenly. it can.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a configuration of a main part of an automobile coating system according to an embodiment of the present invention.

FIG. 2 is a flowchart showing an operation procedure in the above-mentioned automobile coating apparatus.

FIG. 3 is an explanatory view for explaining a conventional coating device.

FIG. 4 is an explanatory diagram for explaining a conventional coating method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Automotive 2 ... Door 10 ... Door opening / closing device 11 ... Door opening / fixing device 19 ... Control device S1 to S11 ... Operation step

Claims (1)

[Claims] 1. In a coating method for an automobile, wherein an opening / closing member of an automobile is opened by an opening / closing device and coating is performed by a coating device, a portion different from a holding portion of the opening / closing member opened by the opening / closing device is held by the opening / closing device. The open-fixing device and the opening-closing device hold the open-state to maintain the open-state, and the opening-closing device and the open-fixing device are alternately operated to maintain the open-state of the opening-closing member. A coating method for an automobile, characterized in that the coating operation is alternately performed on the held portion of the opening / closing member by the coating device.