JP2662314B2 - Cover opening and closing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover opening / closing device for opening and closing a cover such as a bonnet when, for example, painting the body of an automobile using a painting robot or the like.

[0002]

2. Description of the Related Art In this type of opening / closing device, for example, a claw (opening / closing jig) is provided at the tip of an arm of an orthogonal type robot or the like to engage with a projection provided on the back end of the bonnet.
The hood is configured to be opened and closed by appropriately moving the robot along a predetermined trajectory in a state where the opening and closing jig is engaged with the projection. In this case, if a dedicated jig is fixed to the back side end of the hood in advance, the jig is hooked by the opening / closing jig to open and close the hood. Then, in a state where the hood is opened by the opening / closing device, the interior of the engine room and the periphery of the back side of the hood are coated. The reason why the paint is applied to the periphery of the back side of the bonnet as described above is that, for example, a soundproof sheet is adhered at the center of the back side of the bonnet. By not being done.

[0003]

However, when coating the periphery of the back side of the hood opened as described above, the opening / closing jig interferes with the engaging portion of the opening / closing jig. However, there is a problem that the paint cannot be directly applied, or even if the paint is forcibly applied, the paint adheres to the opening / closing jig, and the adhered paint falls, thereby causing poor painting. Therefore, an object of the present invention is to provide a cover opening / closing device having a function of maintaining the open state of the cover so that the coating can be uniformly applied to the periphery of the back side of the cover without unevenness. That is.

[0004]

In order to achieve the above-mentioned object, the main means adopted by the present invention is, in summary, a method for applying a coating to the back side of a cover provided on a vehicle body so as to be openable and closable. A cover opening / closing device for opening the cover by engaging an opening / closing jig supported by an arm with a back side end of the cover, wherein the back opening of the cover is opened by the opening / closing jig. A cover opening / closing device according to a point provided with a holding mechanism that holds an open state of the cover in place of the opening / closing jig by engaging in a non-painting area on the side.

[0005]

Embodiments of the present invention will be described below with reference to the accompanying drawings to provide an understanding of the present invention. The following embodiment is an example embodying the present invention and is not intended to limit the technical scope of the present invention.

FIG. 1 is a front view of a cover opening / closing device according to an embodiment of the present invention, FIG. 2 is a side view of the cover opening / closing device, FIG. 3 is a plan view of the cover opening / closing device, and FIG. 2
5, FIG. 5 is a side sectional view of a main part in FIG. 4, FIG. 6 is an explanatory view when the hood is opened by the cover opening / closing device, and FIG. 7 is a state in which the hood is opened by the cover opening / closing device. It is a perspective view showing the situation at the time of applying painting.

In the cover opening / closing device according to this embodiment, as shown in FIGS. 1 to 5, a main body 3 is provided so as to be able to travel along a conveyor 2 which conveys an automobile main body 1 (see FIG. 7). An arm 4 is provided on the main body 3 so as to be movable up and down. An opening / closing jig 5 having a substantially L-shape in side view is attached to the free end side end of the arm 4. The opening / closing jig 5 is engaged with a projection 6a at the back side end of a bonnet 6 (see FIG. 6) provided on the vehicle body 1 so as to be openable and closable, and holds the body 3 and the arm 4 in a predetermined position. The hood 6 is opened and closed by moving the hood 6 along the locus.

At the free end of the arm 4, a holding member 7 is further provided so as to be swingable in a plane substantially perpendicular to the axis of the arm 4. The arm 4 is oscillated via a shaft 8, bevel gears 9, 10 and a shaft 11 by a motor (not shown) provided on the base side of the arm 4. In this case, the opening / closing jig 5 is swingably supported in a plane substantially perpendicular to the axis of the arm 4 and is elastically positioned and held in the state shown in FIG. That is, the lever 12 fixed to the arm 4 is elastically supported by being sandwiched between the coil springs 13 provided between the lever 12 and the opening / closing jig 5. The state in which the opening and closing jig 5 is rotated by a predetermined amount or more against the elastic biasing force of the coil spring 13 is, for example, a magnet switch 1.
By detecting at 4 and 14, the engagement state of the bonnet 6 with the opening / closing jig 5 or the overload state is detected.

The holding jig 7 is engaged in a non-painting area of the central portion 6b on the back side of the bonnet 6 (see FIGS. 6 and 7) opened by the jig 5.
Instead, the hood 6 is kept open. The cover opening / closing device according to the present embodiment is configured as described above. Next, a procedure for performing a painting operation using the cover opening / closing device will be described with reference to FIGS.
It will be described based on. First, the car body 1 is the conveyor 2
, The leading end of the opening / closing jig 5 is inserted through a gap formed between the bonnet 6 and the vehicle body 1, and a projection provided on the back side end of the bonnet 6. 6a. The bonnet 6 is opened by driving the main body 3 and the arm 4 to move along a predetermined trajectory taught in advance.

Then, the holder 7 is driven to rotate by a motor (not shown), and the front end of the holder 7 is engaged in the unpainted area of the rear side central portion 6b of the bonnet 6 so that the bonnet 6 Is kept open. In this state, the main body 3 and the arm 4 are moved and driven while the holder 7 is further rotated, and the arm 4 is positioned at a position appropriately separated from the bonnet 6. In this state, the opening / closing jig 5 is also separated from the rear side end of the bonnet 6. When the open state of the bonnet 6 is maintained as described above, the periphery 6c of the back side of the bonnet 6
The interior of the engine room 1a is painted by the painting robot 15.

As described above, since the coating operation is performed with the opening / closing jig 5 retracted from the back side end of the bonnet 6, the periphery of the back side of the bonnet 6 is evenly and uniformly. Painting can be done. In the above embodiment, the case where the hood 6 is opened by the opening / closing jig 5 and then the open state of the bonnet 6 is held by the holder 7 has been described. The hood 6 may be held by the holder 7 at a stage where the hood 6 is partially opened, and the hood 6 may be further opened by the holder 7.

[0012]

As described above, according to the present invention, when the back side of a cover provided on a vehicle body is freely opened and closed, an opening / closing jig supported by an arm is attached to an end of the back side of the cover. In the cover opening / closing device that is engaged to open the cover, the cover opening / closing device engages with the cover opening / closing device in a non-painting area on the back side of the cover opened by the opening / closing jig, and replaces the opening / closing jig. Since the cover opening / closing device is provided with a holding mechanism for holding the open state of the cover, for example, the open state of the cover is adjusted so that the coating can be performed uniformly around the rear surface of the cover without unevenness. Can be held.

[Brief description of the drawings]

FIG. 1 is a front view of a cover opening / closing device according to an embodiment of the present invention.

FIG. 2 is a side view of the cover opening / closing device.

FIG. 3 is a plan view of the cover opening / closing device.

FIG. 4 is an enlarged view of a portion viewed from an arrow A in FIG. 2;

FIG. 5 is a sectional side view of a main part in FIG. 4;

FIG. 6 is an explanatory diagram when the hood is opened by the cover opening / closing device.

FIG. 7 is a perspective view showing a situation when painting is performed in a state where the hood is opened by the cover opening / closing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 3 ... Main body 4 ... Arm 5 ... Opening / closing jig 6 ... Bonnet 6a ... Protrusion 6b ... Backside central part 6c ... Backside periphery 7 ... Holder 8,11 ... Shaft 9,10 ... Bevel gear

Claims (1)

(57) [Claims] When a back surface of a cover provided on an automobile body is openably and closably applied, an opening and closing jig supported by an arm is engaged with an end of the back surface of the cover to open the cover. In the cover opening / closing device, the cover opening / closing device is engaged with a non-painting area on the back side of the cover opened by the opening / closing jig to hold the open state of the cover instead of the opening / closing jig. A cover opening / closing device provided with a mechanism.