JPS61149267A - Automatic painting apparatus - Google Patents

Abstract

PURPOSE:To perform efficient painting reduced in the loss of a paint, by providing at least one of at least two painting guns arranged at predetermined intervals in a state reciprocally movable to an up-and-down direction. CONSTITUTION:The side painting gun 1 attached to a reciprocal drive apparatus 3 sprays a paint to the side surface of the body Z of an automobile while reciprocally moves in an up-and-down direction. In this case, the stroke of the reciprocal drive apparatus 3 can be controlled so as to be made long as shown by a mark S1 or short as shown by a mark S2 in alignment with the upper edge of the tire house of the automobile body Z or the lower edge of a door part. The side painting gun 2 arranged at a predetermined interval from the side painting gun 1 is fixed to a position higher than the painting gun 1 to paint only a predetermined area of which the height is determined. Therefore, a paint can be sprayed only to the automobile body in matching relation to the side surface shape of said body and the wastefulness of the paint is eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to automatic painting equipment. More specifically, the present invention relates to an automatic painting device that can reduce paint loss in an automobile body painting line.

[Prior Art] In a conventional automatic painting line for automobile bodies, as shown in FIG. Paint guns (a), (b), and (C) are fixedly arranged.

The painting work using these side painting guns (a), (b), and (C) is as shown in Figure 6, where the fixed positions of the side painting guns (a), (b), and (C) are The upper part (A) and middle part (B) of the car body are
), the lower part (C), and are controlled by pulse signals sent from the conveying equipment, and only during the period indicated by symbol (P) are the respective side painting guns (a), (b),
Paint is sprayed from (C) onwards.

[Problems to be Solved by the Invention] However, conventional automatic painting lines have the problem of increasing paint loss.

For example, when painting the body of a cab-over type truck as shown in Figure 7, the part indicated by the symbol (B) is painted using the side painting gun (b) located at an intermediate position. The space above (81) is also sprayed with paint in the same way as the part of the pode (I30).
Paint thrown into the air is wasted. In addition, when painting a passenger car with two-tone paint divided into upper and lower parts as shown in Fig. 8, a masking part (M) is provided and the part indicated by the symbol @ (B) is painted using a side paint gun (b) at an intermediate position. However, in this case, the masking part (H) is also sprayed with paint in the same way as the part of the pod (Bo), so the paint is wasted as well.

SUMMARY OF THE INVENTION In view of the above circumstances, it is an object of the present invention to provide an automatic painting device that can spray paint only onto an automobile body without wasting paint.

[Means for Solving the Problems] The automatic painting apparatus of the present invention includes at least two side painting guns arranged at a predetermined interval along the traveling direction of the painting line in an automobile body painting line. In addition, the present invention is characterized in that at least one side painting gun is capable of vertically reciprocating movement, and at least one other side painting gun is fixedly disposed.

[Function] When using the automatic painting device of the present invention, the side painting gun can be reciprocated in the vertical direction, so by adjusting the stroke of the reciprocating movement, the coating width in the vertical direction can be widened or narrowed. can do. Therefore, paint can be sprayed only on the car body in accordance with the side shape of the car body, and there is no need to waste paint flying into the air.

[Example] Next, embodiments of the present invention will be described based on the drawings.

FIG. 1 is an explanatory diagram of the structure of an automatic painting device that is an embodiment of the present invention, FIG. 2 is an explanatory diagram of the painting operation in the automatic painting device shown in FIG. 1, and FIG. FIG. 4 is an explanatory diagram of the structure of the automatic painting apparatus according to the embodiment, and is an explanatory diagram of the painting operation in the automatic painting apparatus shown in FIG. 3.

The automatic painting device shown in Figure 1 consists of a side painting gun (1
), (2), its side painting gun (1),
(2) are arranged at intervals along the advancing direction of the coating line (direction of arrow (A)). The side painting gun (1) is reciprocated up and down by a reciprocating drive device (3), and the side painting gun (2) is fixed at a higher position than the side painting gun (1). There is. Note that (Z) is an automobile body, and (4) is an automobile body (
This is a conveyor for moving the robot (Z) in the direction of arrow (A). The reciprocating drive device (3) is equipped with a drive mechanism and a guide mechanism for reciprocating the side coating gun (1) up and down, and is also provided with a controller for changing the stroke length. The drive mechanism and guide mechanism need not be special, and may be constructed by known mechanical means. Further, the controller may also be constituted by known electrical or mechanical means.

The side paint gun (1) attached to the reciprocating drive device (3) sprays paint onto the side surface of the automobile body (Z) while reciprocating in the vertical direction. Furthermore, by lengthening or shortening the stroke of the reciprocating motion, the vertical width of the coating surface can be made wider or narrower. Therefore, the second
When painting an automobile body (Z) as shown in the figure, the stroke of the reciprocating drive device (3) should be lengthened (31) or shortened to match the upper edge of the tire house and the lower edge of a portion of the door.
(32) Control so that However, by doing so, the paint is sprayed only on one part of the car's pod, and there is no need to waste paint spraying on the lower part of the tire housing.

The automatic painting device shown in Fig. 3 has a stationary side painting gun (2) positioned at approximately the same height as the intermediate position of the side painting gun (1) attached to the reciprocating drive device (3). It is fixed.

When this automatic painting device is used, for example, as shown in FIG.
) and the cargo area (12), the transport compartment part (Zl) is painted by a side painting gun (1) that is moved up and down by the reciprocating drive device (3), and the cargo area (12) is painted in advance to a certain height. It is possible to divide the work by adjusting the side painting gun (2) on the fixed side. Therefore, the reciprocating drive device (3) is adjusted to match the shape of the driver's cab part (11).
By making the process longer or shorter and spraying paint only on a portion of the car's body, it is possible to eliminate the waste of spraying paint into the air.

In the above embodiments, two side painting guns were used, but if three or more were used, one or two of them could be used.
The above may be reciprocated up and down by a reciprocating drive device (3). However, in the case of the present invention, which performs coating work while moving the side painting gun up and down, the coating area per side painting gun increases, so generally speaking, the number of side painting guns installed is greater than that of conventional automatic painting equipment. less. Therefore, there is an advantage that the amount of paint and diluting thinner that must be discarded each time the color is changed can be reduced.

[Effects of the Invention] When using an automatic painting device, paint can be sprayed only on the car body in accordance with the side shape of the car body, so waste of paint loss can be eliminated.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of the structure of an automatic painting device that is an embodiment of the present invention, FIG. 2 is an explanatory diagram of the painting operation in the automatic painting device shown in FIG. 1, and FIG. FIG. 4 is an explanatory diagram of the structure of an automatic painting device according to an embodiment; FIG. 4 is an explanatory diagram showing the painting operation by the automatic painting device invented in FIG. 3; FIG. 5 is a structural explanatory diagram of a conventional automatic painting device; FIG. 6 is an explanatory diagram showing a painting operation using a conventional automatic painting apparatus, and FIGS. 7 and 8 are explanatory diagrams showing problems in the conventional painting operation. (Main symbols in the drawings) (1), (2): Side painting gun (3): Reciprocating drive device (1): Automobile body Fig. 1 → Fig. 22 Fig. 23 Fig. 4 Fig. 6: Reciprocating drive device 2: Automobile body diagram 5 off view

Claims (1)

[Claims] 1. In the automobile body painting line, at least 2
The side painting guns of the stand are arranged at predetermined intervals along the advancing direction of the painting line, and at least one side painting gun is capable of vertically reciprocating movement, and at least one other side painting gun is arranged at predetermined intervals along the advancing direction of the painting line. An automatic painting device characterized by being fixedly arranged.