JPH0640366A - Door fixing device and method for washing the device - Google Patents

Abstract

PURPOSE:To provide a door fixing device capable of fixing a door at its opened position properly corresponding to doors of various vehicles and provide the method for efficiently washing the device. CONSTITUTION:A door main body 16 is fixed at its opened position when a fixing member 17 is coupled with the glass groove 16a of the opened door main body 16. The fixing member 17 is formed into a spherical shape, for example. A bar 15 and the fixing member 17 stuck with a paint in the coating work are washed on the surface in the following procedures. The bar 15 and the fixing member 17 are rotatively driven on the axis in the cover 22 of a washing device 21. A thinner is sprayed from a spray gun 23 toward the peripheral face, and the tip section of the bar 15 and the fixing member 17 are washed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for fixing a door of an automobile for painting work by a robot in an open position and a method for cleaning the 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, for example, as shown in FIG. 4, first, the door 2 of the automobile 1 is, for example, the painting robot 3
It is opened by itself. Door 2 with the above painting robot
When the door is opened, the door 2 is fixed by the door 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 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.

[0003]

By the way, in recent years, for the purpose of improving the efficiency of production, a method of painting many kinds of automobiles on one production line has been widely adopted. Even if the above-mentioned door fixing device 4 is applied to the above, since the structure on the inner surface side of the door is different depending on each vehicle type, the pressing member 6 of the raising and lowering lever 5 can be used for all types of doors. Due to the action, it cannot be fixed in the open position. Therefore, a first object of the present invention is to provide a door fixing device capable of fixing the door in its open position in a suitable manner for the door of each vehicle type. Further, in the above-mentioned coating system, since the painting operation is performed while the fixing member is engaged with the door body, the coating material also adheres to the fixing member. Then, when the same painting operation is performed on another vehicle, the paint adhered to the fixing member adheres to the door of the other vehicle, resulting in a defective coating. Therefore, a second object of the present invention is to provide a cleaning method capable of efficiently cleaning the fixing member to which the paint is attached during the painting operation.

[0004]

In order to achieve the above first object, the main means adopted by the present invention is, in essence, the fact that a fixing member is engaged with a door of an automobile and the door is In the door fixing device that fixes in the open position,
The fixing member is composed of a rotating body having gradually different radial dimensions in the axial direction in a side sectional view, and a curved surface of the rotating body is engaged with a concave portion or a convex portion formed at an upper end portion of the door body. Is a door fixing device according to the point that the door is fixed at the open position. Further, in order to achieve the above-mentioned second object, the main means adopted by the present invention is, in summary, a door for engaging a fixing member with an automobile door and fixing the door in the open position. In the method for cleaning a fixing device, the fixing member is constituted by a rotating body having a gradually different radial dimension in an axial direction in a side sectional view so as to be engaged with a concave portion or a convex portion formed in an upper end portion of the door body. In addition, the cleaning liquid is sprayed toward the peripheral surface of the fixing member while rotating the fixing member while rotating the fixing member on the shaft center, and the fixing member is cleaned. It is a cleaning method.

[0005]

In the door fixing device having the above structure, the fixing member is engaged with the concave portion or the convex portion of the upper end portion of the door body which is always formed even if the vehicle type is different, and each door is fixed at its open position. It Further, in the cleaning method according to the above configuration, since the cleaning liquid is sprayed toward the peripheral surface of the fixing member while the fixing member is rotated on its axis,
The cleaning of the fixing member is extremely efficient. Further, since the fixing member is composed of a rotating body, it is not necessary to perform stop positioning accuracy around the shaft center of the fixing member after the cleaning is completed.

[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. It should be noted that the following embodiments are examples of embodying the present invention, and are not intended to limit the technical scope of the present invention. here,
1A and 1B show a door fixing device according to an embodiment of the present invention. FIG. 1A is a side view, FIG. 1B is a sectional view taken along the line AA 'in FIG. FIG. 3 is a plan view of a main part of an automobile painting facility to which a fixing device is applied, and FIG. 3 is an enlarged view of a main part showing various shapes of a fixing member applicable to the door fixing device. In the door fixing device 7 according to this embodiment, as shown in FIG.
As shown in FIGS. 2A and 2B and FIG. 2, a frame 9 is arranged on the base 8 so as to be rotatable in a horizontal plane, and the frame 9 is driven to rotate by an air cylinder (not shown). A holder 10 is slidably arranged in the vertical direction on the frame 9, and the holder 10 includes an air cylinder 11
Is driven up and down. Further, an arm 12 is swingably supported within the vertical plane of the holder 10, and the arm 12 is swingably driven by a rotary actuator 13. Furthermore, the arm 12 is provided with a bar 15 which is driven to rotate by an air motor 14 on its axis, and a glass formed on the upper end of the door body 16 is provided at the tip of the bar 15. The door body 1 is engaged with the groove 16a.
A fixing member 17 for fixing 6 in its open position is attached.

The fixing member 17 is made of, for example, a synthetic resin and is composed of a rotating body whose radial dimension gradually differs in the axial direction in a side sectional view, and its shape is a spherical shape as shown in FIG. Besides, an elliptical fixing member 18, an abacus fixing member 19 (see FIG. 3), and the like are possible. A cleaning device 21 having an opening 20 in the vertical direction is arranged on the base side of the base 8. The cleaning device 21
Inside the cover 22, a plurality of spray guns 23 are arranged in parallel in the vertical direction. Spray gun 2 above
3 has a function of injecting, for example, a thinner toward the peripheral surfaces of the bar 15 and the fixing member 17 which are inserted into the cover 22 through the opening 20 and driven to rotate, and clean the surfaces thereof. Incidentally, as described above, the curved surface of the fixing member 17 formed by the rotating body is engaged with the glass groove 16a of the door body 16 to fix the door body 16 in its open position. However, most of the automobile doors are provided with glass grooves, and the glass grooves are not so different in structure or shape.
Further, as shown in the figure, the door main body 24 not having the glass groove as described above and having the convex portion 24a as shown in FIG. 3 is located at a position separated by a predetermined dimension in the axial direction. It is preferable to use the fixing member 25 formed by arranging individual spherical convex rotating bodies. In this case, the convex portion 24a of the door body 24 is engaged with the groove portion formed between the rotary members,
The door body 24 is fixed in its open position. When the door body 16 is fixed in its open position by using the fixing member 25, one of the rotating bodies may be used to fix the door body 1.
The glass groove 16a of No. 6 may be fixed. or,
Instead of the fixing member 25, it is also possible to apply the fixing member 18 or 19 in which ellipse-shaped or abacus-shaped ones are arranged side by side at a predetermined distance in the axial direction of the rotating body. Is. Next, the operation of the door fixing device 7 having the above configuration and the procedure for cleaning it will be described.

First, when an automobile mounted on a bogie (not shown) is stopped at a predetermined coating work place on the production line, the opening / closing jig 27 of the door opening / closing device 26 is engaged with the door body 16. The door body 16 is opened by appropriately swinging each arm of the door opening / closing device 26.
Subsequently, the bar 15 of the door fixing device 7 is swung or slid in a proper direction, and the curved surface of the fixing member 17 provided at the tip of the bar 15 causes the glass groove 16 of the door body 16 to move.
It is engaged so as to be pressed downward from above by a. With the door body 16 fixed in its open position as described above, a painting robot (not shown) performs painting work on the inside of the vehicle body or the door body 16. When the paint adheres to the tip portion of the bar 15 or the surface of the fixing member 17 by repeated coating work, the surface is cleaned by the following procedure. That is, the bar 15 is driven to swing downward and is slidably driven, and the tip end portion of the bar 15 and the fixing member 17 are inserted into the cover 22 of the cleaning device 21. In this state, the bar 15 is rotationally driven on its axis, and at the same time, thinner is sprayed from the spray gun 23 toward the peripheral surface thereof. As a result, the tip portion of the bar 15 and the peripheral surface of the fixing member 17 are cleaned efficiently by the thinner from the spray gun 23. By taking such a cleaning procedure, the cleaning operation can be completed within a short time with a relatively small amount of thinner. Also, if the cleaning is performed while rotating the bar 15 as described above, the spray gun 2
3 may be arranged only in one direction with respect to the bar 15 and the fixing member 17, and can greatly contribute to downsizing and space saving of the cleaning device 21. Furthermore, since the fixing member 17 is a convex rotary member as described above, positioning of the bar 15 and the fixing member 17 in the rotational direction on the axis of the bar 15 after cleaning becomes unnecessary, and the control can be simplified. It can greatly contribute. The bar 15 and the fixing member 17 after being washed as described above are
By stopping the injection of the thinner from the spray gun 23 and rotating it at a high speed, the surface can be dried very efficiently. If drying air is blown in this state, the drying time is further shortened.

[0009]

Since the door fixing device and the method for cleaning the device according to the present invention are configured as described above,
The door can be fixed at the open position corresponding to the door of each vehicle type, and the fixing member to which the paint is attached can be efficiently washed during the painting operation.

[Brief description of drawings]

1A and 1B show a door fixing device according to an embodiment of the present invention, in which FIG. 1A is a side view and FIG. 1B is a sectional view taken along the line AA ′ in FIG.

FIG. 2 is a plan view of an essential part of an automobile painting facility to which the door fixing device is applied.

FIG. 3 is an enlarged view of a main part showing various shapes of a fixing member applicable to the door fixing device.

FIG. 4 is a view for explaining a conventional door fixing device.

[Explanation of symbols]

7 ... Door fixing device 8 ... Base 9 ... Frame 10 ... Holder 11 ... Air cylinder 12 ... Arm 13 ... Roller actuator 14 ... Air motor 15 ... Bar 16, 24 ...
Door body 16a ... Glass groove 24a ... Convex part 17, 18, 19, 25 ... Fixing member 20 ... Opening 21 ... Cleaning device 22 ... Cover 23 ... Spray gun

Claims (4)

[Claims] 1. A door fixing device for engaging a fixing member with a door of an automobile and fixing the door in its open position,
The fixing member is composed of a rotating body having gradually different radial dimensions in the axial direction in a side sectional view, and a curved surface of the rotating body is engaged with a concave portion or a convex portion formed at an upper end portion of the door body. The door fixing device is characterized in that the door is fixed at its open position. 2. The door fixing device according to claim 1, wherein the fixing member is formed by arranging two substantially convex rotating bodies in parallel at positions separated by a predetermined dimension in the axial direction. 3. The door fixing device according to claim 1, wherein the fixing member is rotatable on its axis. 4. A method of cleaning a door fixing device for engaging a fixing member to a door of an automobile and fixing the door in its open position, wherein the fixing member is formed on an upper end portion of the door body. In order to engage with the concave portion or the convex portion, it is composed of a rotating body having gradually different radial dimensions in the axial direction in a side sectional view, and is made rotatable on the axial center, and the fixing member is rotated on the axial center. While cleaning the fixing member, a cleaning liquid is sprayed toward the peripheral surface of the fixing member.