JPH019649Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field) The present invention relates to an apparatus for automatically applying heat-resistant paint or the like to a narrow portion such as the tail portion of an exhaust muffler of a two-wheeled motor vehicle.

(Prior art) For example, when painting a surface that has a funnel shape with a deep center and an exhaust pipe opening in the center, such as the tail part of an exhaust muffler on a motorcycle, It was traditionally done by hand, such as brush painting. However, this type of work is not only inapplicable to conveyor-type line painting, but also has problems such as increased paint consumption due to sagging and the inability to achieve uniform painting. Even so, depending on the operation of the conveyor, there is a possibility that the coating film cannot be accurately formed on a limited surface.

(Purpose) The present invention was developed in view of these problems, and its purpose is to continuously form a uniform coating film on a limited area of a work being transported. Our goal is to provide new equipment.

(Structure) Therefore, details of the present invention will be described below based on illustrated embodiments.

The drawing shows an example of the device according to the present invention configured as a tail portion painting device for an exhaust muffler. In the drawing, reference numeral 1 is a base provided on one side of the workpiece conveying device 2, and a base plate is provided on the top surface of the device. is provided with a guide rail 6 for holding a sliding plate 5 to which a coating gun 3 and a coating guard 4 are attached movably in the transport direction of the workpiece W, and also has a guide rail 6 at which the conveyor jig 7 stops. A link mechanism for moving the above-described sliding plate 5 in the transport direction of the workpiece W, that is, a link mechanism of the same length that is mutually pivotably supported on the base 1 about pivot points 8a and 9a. The timing lever 8 and interlocking lever 9
At the same time, the other end of the timing lever 8 is made to protrude into the movement area of the confirmation dock 10 provided in a part of the conveyor jig 7, and the interlocking lever 9
A link mechanism whose other end is connected to the above-mentioned sliding plate 5 is attached, and a link mechanism on the sliding plate 5 is attached near the above-mentioned guide rail 6.
A limit switch 12 is mounted which responds to the LS dock 11 to cause the painting operation to take place.

On the other hand, the above-mentioned sliding plate 5 is provided with a coating guard 4 between the coating gun 3 and the workpiece W, which prevents the paint from scattering from the coating gun 3 attached to the outer end of the sliding plate 5. As shown in Fig. 2, these opposing openings diffuse the spray flow from the nozzle 3a in a conical shape, and the exhaust pipe Wb, which protrudes into the center of the tail of the exhaust muffler forming the work W, has an opening. A conical mask member 13 that prevents paint from adhering is adjustably attached with a wire 14, and a surface 15 facing the tail portion is provided with a conical mask member 13 that prevents paint from adhering to the paint. The funnel-shaped inner surface of the tail
A circular hole 16 is bored to guide only Wa.

In the above-described embodiment, when the workpiece transport device 2 transports the workpiece W to the painting unit installation position and stops, the tip of the confirmation dot 10 on the conveyor jig 7 protrudes into this movement area as previously adjusted. The sliding plate 5 is moved to the right in the figure through the interlocking lever 9 which is connected to the timing lever 8 by a pin, and is rotated slightly clockwise in the figure. The held painting gun 3 and coating guard 4 are aligned with the center of the tail part of the exhaust muffler forming the workpiece W. At the same time, the LS on the sliding plate 5
The dot 11 comes into contact with the limit switch 12 and switches its contact point, causing the paint gun 3 to start spraying the paint.

By the way, as described above, the conical mask member 13 is provided in front of the nozzle 3a of this painting gun 3, so that the spray flow ejected from the nozzle 3a is masked as shown in FIG. Part 1
3, and adheres to the funnel-shaped inner surface Wa of the tail part of the exhaust muffler, forming a film of heat-resistant paint there, and the exhaust pipe protruding into the center.
Paint is prevented from adhering to Wb by the masking action of the mask member 13.

Note that the transport device 2 that transports the workpiece W described above
The conveyance speed may change depending on the line situation, and depending on the speed, it may take 10 minutes to reach the stop position.
Variations of about mm will occur. In this case, the confirmation dot 10 on the conveyor jig 7 is the timing lever 8.
As shown in FIG. 3, the paint gun 3 and the like are caused to follow the workpiece W by an amount corresponding to the variation in the stop position by rotating the paint gun 3 and the like in the counterclockwise direction in the figure by a large amount via the interlocking lever 9.

Although the above is an explanation of an embodiment in which the workpiece W is stopped by the coating device, the present invention can also be configured as a device that paints the workpiece W while continuously moving it, and in this case, the coating gun 3
The setting may be made so that the painting operation is completed while the workpiece W is moving following the workpiece W.

(Effects) As explained above, according to the present invention, the paint sprayer and the mask member are moved according to the stopping position of the workpiece, so it is possible to move the paint sprayer and the mask member according to the stopping position of the workpiece. When painting a part, even if the stop position of the conveyor that transports the work varies slightly depending on the conditions at the time, or the moving speed changes, the conveyor that transports the work can be painted accurately and without overflowing. A uniform coating process is possible.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a device showing an embodiment of the present invention, Fig. 2 is a drawing showing a painting state by the same device, and Fig. 3 is a follow-up operation of a coating gun, etc. according to the stop position of the conveyor. FIG. 2... Conveyance device, 3... Painting gun, 4... Application guard, 5... Sliding plate, 6... Guide rail, 8, 9... Lever, 10... Confirmation dock, 1
1...LS dock, 12...Limit switch,
13...Mask member, W...Work.

Claims (1)

[Scope of utility model registration request] a workpiece conveyance member; a member that is transferred together with the workpiece on the conveyance member; and a link member that comes into contact with the member and whose output end is displaced by a predetermined amount in the direction of conveyance of the member at the same speed as the member. , a movable member connected to the output end of the link member and carrying a paint sprayer and a mask member for preventing paint from adhering to the non-painted portion of the workpiece in front of the sprayer. Automatic painting equipment.