JPH09103722A - Masking material fitting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate waiting time due to the sending of a masking material and to shorten masking work time per one place by providing a stopper drive mechanism for protruding stoppers while a fitting nozzle is moved between holes of a material to be coated by a robot. SOLUTION: The fitting work position of stoppers 9 fitted on a side wall of a fitting nozzle 5 is provided on the air tube 4 side from an installing position of a masking material 3 reaching the tip of the fitting nozzle 5. The stoppers 9 are protruded into the pipe from the inner wall of the fitting nozzle 5 by a stopper drive mechanism 10 such as an air cylinder while the fitting nozzle 5 is moved between holes 2 of a material to be coated by an industrial robot to temporarily stop the masking material 3, and are retracted into the inside of the side wall to pass the masking material 3. In this way, waiting time due to the sending of the masking material 3 is eliminated to shorten masking work time per one place.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a masking material mounting device for preventing paint from adhering to holes such as component mounting holes when a vehicle body of an automobile is painted.

[0002]

2. Description of the Related Art In an automobile painting process, a thick film such as a soundproof paint or a chipping resistant paint is applied as an undercoat paint in order to impart soundproofness and chipping resistance to a lower portion of a vehicle body, in addition to undercoat paint. There is.

This paint has a large film thickness, and if it adheres to a hole such as a component mounting hole, it will hinder the subsequent mounting work.

Therefore, as a preparation for the above-mentioned painting work, as shown in FIG. 5, the hole 2 of the vehicle body 1 to be coated is covered with a masking material 3 such as polystyrene foam.

Conventionally, the work of attaching the masking material 3 has been performed as follows. First, as shown in FIG. 6, the mounting nozzle 5 connected to the air tube 4 for supplying the masking material 3 is moved by the industrial robot 6, and the tip opening of the mounting nozzle 5 is a hole masked during coating. It faces 2 (henceforth a masking hole). Then, it is aligned and supplied by the parts feeder 7,
Masking material 3 cut out one by one by the cutting device 8
Through the air tube 4 by air pressure to the tip of the attachment nozzle 5. And the mounting nozzle 5
The masking material 3 is pressed against the masking hole 2 using a pressing device such as a pusher (not shown) attached to the tip of the masking member 3 to mount it.

When the masking work at one place is completed, the industrial robot 6 moves the mounting nozzle 5 to the position of the next masking hole 2 so that the mounting nozzle 5 faces the masking hole 2 and is then cut out by air pressure. One masking material 3 is pressure fed from the device 8 and the same operation is repeated.

[0007]

In the above masking work, the masking material 3 must be pumped by air pressure with the mounting nozzle 5 facing the masking hole 2 for masking work. This is because if pressure feeding is performed while the mounting nozzle 5 is being moved by the industrial robot 6, the masking material 3 will fly out from the tip opening of the mounting nozzle.

For this reason, a waiting time for pumping the masking material 3 from the cutting device 8 to the mounting nozzle 5 is required for each masking operation. There are as many as 200 masking holes in one vehicle body, and this waiting time had a great influence on the reduction in work efficiency.

Therefore, according to the present invention, the waiting time due to the feeding of the masking material is eliminated or extremely shortened, and
The task is to shorten the masking work time (1 cycle time).

[0010]

The masking material mounting device of the present invention is

The mounting nozzle connected to the tip of the air tube for pneumatically feeding the masking material is moved by an industrial robot so that the opening of the tip faces the hole of the object to be masked during coating, and the mounting nozzle is attached. In the masking material attaching device in which the above holes are covered by the masking material reaching the tip of

The masking material is provided on the side wall of the mounting nozzle, closer to the air tube than the mounting position of the masking material reaching the tip of the mounting nozzle. And a stopper that allows

It is characterized in that the mounting nozzle is provided with a stopper drive mechanism for projecting the stopper while the industrial nozzle moves between the holes.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1 showing an embodiment of the present invention, 9 is a stopper attached to the side wall of an attachment nozzle 5, the attachment position of which is from the attachment position of a masking material reaching the tip of the attachment nozzle. It is the air tube side. This is for keeping the next masking material on standby without hindering the masking work of the previously sent masking member.

This stopper 9 is operated by a stopper driving device 10 such as an air cylinder to project from the inner wall of the mounting nozzle 5 into the pipe to temporarily stop the masking material 3, and to retract into the side wall to remove the masking material 3. Perform the action of passing.

An example of masking work using the stopper 9 will be described.

As shown in FIG. 2A, when the masking material 3 is attached at one masking portion, the stopper 9
At the same time as the projection is made, the next masking material 3 is started to be sent from the cutting device by air pressure. At the same time, the mounting nozzle 5 is started to move to the next masking site by the work robot 6. During this movement, masking material 3
When the nozzle reaches the mounting nozzle 5, it is stopped by the stopper 9 as shown in FIG. 2 (b), and the protrusion from the opening of the mounting nozzle is prevented. When the attachment robot 5 reaches the next work site by the work robot 6,
The stopper 9 is retracted, the masking material 3 is sent to the tip of the mounting nozzle 5 by air pressure, and the mounting work is performed. After the installation work is completed, the operation described above is repeated.

Next, a concrete example of the structure of the present invention is shown in FIG.
(b) and (c) will be explained.

In the figure, 11 is a base of the mounting nozzle,
The side surface is supported by the mounting bracket 12 on the front end of the work robot 6, and the air tube 4 is connected to the rear end.
A nozzle tip portion 14 having a feed claw 13 incorporated at the tip is screwed.

The pair of stoppers 9 projecting and retracting by an air cylinder 10 are provided on the side walls of the mounting nozzle base.

A ball bearing 15 is provided at the connecting portion with the air tube 4 to give the mounting nozzle 5 flexibility in the direction of rotation with respect to the air tube 4. Feeding claw 1 provided on the side wall of the nozzle tip portion 14
Numeral 3 is a member which projects and retracts inward around the fulcrum pin 16 and is biased in the projecting direction by a spring 17 and when the masking material 3 is pneumatically fed, it is retracted by the air pressure. When the masking material 3 passes, it is pushed by the spring 17 to take the protruding position and stop the return of the masking material 3. The masking work is performed by the industrial robot 6 through the mounting bracket 12 while the masking material 3 is locked by the feeding claw 13.
It is done by pressing on.

The masking material used in the present invention is
For example, as in the masking material 3 shown in FIG. 4 (a), a small-diameter protrusion is coaxially integrally formed from a large-diameter base, and the large-diameter base flat surface coated with the adhesive 18 is used as the masking hole 2 A type that is pressed against and fixed to is used, but Fig. 4 (b)
It is also possible to use a masking material 18 in which a small-diameter insertion portion is coaxially formed so as to project from a large-diameter base portion, and the insertion portion is inserted into the masking hole 2 for fixation as shown in FIG.

[0023]

As described above, in the present invention, the masking material 3 to be mounted next while the mounting nozzle 5 is moving.
Is air-fed while preventing it from jumping out from the tip opening, and is made to stand by at the position of the stopper 9, so that the waiting time due to the air-pressure feeding time of the masking material 3 can be eliminated or can be made extremely short. Therefore, it is possible to shorten the cycle time of the masking work using the industrial robot and improve the work efficiency.

[Brief description of the drawings]

FIG. 1 is a diagram showing an overall configuration of a masking material attaching apparatus of the present invention.

2 is a cross-sectional view showing a masking process using the mounting nozzle of FIG. 1, (a) shows a state where masking for one masking hole is completed, and (b) shows a moving state to the next masking hole. Show.

3A and 3B are views showing a specific structure example of the mounting nozzle of FIG. 1, in which (a) is a cross-sectional view and (b) is a side view showing a mounting state on an industrial robot with a nozzle tip portion removed. Figure,
(C) is a side view showing the arrangement of the feeding claws as seen from the front end opening side.

FIG. 4 is a perspective view showing two structural examples ((a) and (b)) of the masking material used in the present invention.

FIG. 5 is a view for explaining how to attach a masking material to a vehicle body of an automobile.

FIG. 6 is a cross-sectional view showing a general configuration when an industrial robot of a masking material attaching device is used.

[Explanation of symbols]

 1 Car body for masking 2 Hole for masking 3,17 Masking material 4 Air tube for pressure-feeding masking material 5 Mounting nozzle 6 Industrial robot 9 Stopper 10 Stopper drive device (air cylinder)

Claims (1)

[Claims] 1. An industrial robot moves an attachment nozzle connected to the tip of an air tube for pneumatically feeding a masking material so that its tip opening faces a hole of an object to be masked during painting, In the masking material mounting device in which the holes are covered with the masking material reaching the tip of the mounting nozzle, the side wall of the mounting nozzle is provided on the air tube side from the mounting work position of the masking material reaching the tip of the mounting nozzle, A stopper that protrudes inward to temporarily stop the masking material and then retracts into the side wall to pass the masking material and a stopper that causes the stopper to protrude while the mounting nozzle moves between the holes by the industrial robot. An apparatus for attaching a masking material, which is provided with a drive mechanism.