JPS5836675A - Painting device - Google Patents

Abstract

PURPOSE:To reduce color changing time and to economize waste paint and thinners by disposing a color changing device and a robot in proximity and running boty synthcononously. CONSTITUTION:A signal transmitter 32 for synchronizing driving power and a signal receiver 33 for synchronizing driving power are provided respectively to a driving device which turns a sprocket 28 and the 2nd sprocket 30, and both driving devices are connected electrically. Thus the traveling of a color changer 22 in synchronization with the traveling of the base 21 of a robot is made possible and since the color changer 22 is made movable while the distance between the same and a painting machine 26 is kept in a constant range in a feed hose, the length of a paint feed hose 27 can be reduced. Further, the free locus characteristic of the robot is fully assured because robot is kept free from any load at all.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a painting device in which a color changing device and a robot are arranged so as to run in synchronization.

In a paint line that performs multi-color painting, for example, a paint line that performs topcoating of automobiles, paint is generally supplied to the paint machine via a color change device. A color changing device used for this purpose is constructed, for example, as shown in the external view in Figure 1, there are two-way valves 1, 1, etc. according to the number of colors to be painted, and two-way valves for cleaning air and cleaning thinner. Paint etc. are sent through the respective fittings 3, which have valves 2, 2, and when the internal valves are opened and closed, paint of a predetermined color is discharged into the feed pipe 4, and the paint is sent to the feed hose 6 connected to the hose fitting 5. is fed to the coating machine through However, when changing the color, first
, (1) to clean the feed hose 6 and the inside of the sprayer.
) blowing air to push out the paint, (2) cleaning with thinner, and (3) blowing air to push out the thinner. With the construction of feeding the paint □-, such color changes are required to be completed in a short time due to the recent increase in speed of painting lines, and it is required to save waste paint and cleaning thinner.

On the other hand, in recent painting lines, technology using robots has been developed from the viewpoints of automation, labor saving, hygiene, pollution, etc. For example, as shown in the external view in Figure 2, the darning robot tilts the main column 11 back and forth at an angle of A-A, and the 7-arm 12 moves up and down at an angle of B-B. The machine 13 and the rotating plate 14 can each move independently, and furthermore, the robot body 15 may move along a line on the β-role, so the robot as a whole can move in a three-dimensional manner, that is, freely. It has a structure with trajectory characteristics. In addition, 6 in the figure represents a feeding hose, and the first
It is the same feed bowse as shown in the figure. Thus,
Robot painting using the color changing device is also required to change colors quickly, especially in automotive painting.
Taking rain as an example, it is normal to change as many as 20 colors, and depending on the production process, it is not uncommon for colors to be changed for each car body, so this will save time. At the same time, there is a strong demand for saving waste materials and the amount of cleaning thinner. Therefore, shortening the color change time can be achieved by shortening the distance between the color change device and the coating machine as much as possible (5), and this also reduces waste paint and cleaning thinner during color changes. The inventor of the present application has focused on the fact that an effect that reduces the amount of waste can be generated.

However, in conventional robot painting, unlike fixed painting or reciprocating painting, there are various problems such as the relationship between the size and weight of the color changing device and the functional characteristics of the robot, so the color changing device is separated from the robot. Currently, the supply hose is often installed in a fixed position, for example, in a painting room, on a side wall, etc., and therefore the supply hose inevitably becomes long. Therefore, it is necessary to spend a lot of time cleaning the feed hose 6 and the inside of the paint sprayer 13, and there is a limit to shortening the color change time required for work efficiency. The amount of paint and cleaning thinner has increased, and the economic loss has become even greater.

The purpose of the present invention is to solve the problems of the prior art described above,
To this end, it is an object of the present invention to provide a coating device in which a color changing device and a robot are disposed close to each other, so that the two move in synchronization, and in which the free trajectory of the pot is not obstructed.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 3 is an external view showing one embodiment of the coating apparatus according to the present invention, in which (a) is a side view and fbl is a front view.

One bot and color changing device used in this example are:
This is a conventionally known device (see FIGS. 1 and 2).
The color change device is disposed on a color change device running rail 24 which is installed parallel to the color change device 3. Therefore, the color change device 22 is installed above the 7-m 25 of the robot and as close as possible to the sprayers 2 and 6, and is not directly contaminated by the spray from the sprayer 26. In addition, the color change device 22 is installed at a location where dirt on the color change device will not affect the painting and where the free trajectory of the robot is not inhibited, for example, as shown in Fig. M3 ta+. The length of the paint supply hose 27 connecting the paint sprayer 26 is set so as to maintain the minimum distance within a range that can follow the free trajectory of the robot. On the other hand,
The robot body 21 is seen fixedly attached to the p-bot drive chain 29 which engages the sprocket 28 on one side, while one end of the color changer knee 731 is positioned to engage the second sprocket 30.

In addition to this configuration, a drive device (not shown) for rotating the sprocket 28 and the second sprocket 30 is provided with a power synchro transmitter 32 and a power synchro receiver 33, respectively, to electrically connect the surface drive devices. Configure it to match.

This makes it possible for the color changing device 220 to run in synchronization with the robot's base 210 traveling.
Since the paint supply hose 27 can be moved while always keeping the distance from the paint supply hose 26 within a certain range, the length of the paint supply hose 27 can be shortened as much as possible. Furthermore, according to such an installation method, since no load is applied to the robot by G-work, the free trajectory of the robot can be sufficiently ensured.

In another embodiment of the present invention, as shown in FIG. 4, a connecting rod 34 connects the robot body 21 and the color changing device 22 disposed above it. As a result, the color changing device 22 can run in synchronization with the running of the p-hot main body 21, and the connecting rod 34 can be installed within a range that does not impede the free trajectory of the robot (to the side of the main pillar 35 of the robot). 3), it can have the same effect as the embodiment described in FIG. 3. In the same figure, the same reference numerals as in FIG. 3 refer to the same parts.

As described above, the present invention shortens the distance between the color change device and the paint sprayer attached to the robot as much as possible by making the color change device and the robot main body electrically and mechanically synchronized. Since it is configured to realize a water-repellent coating device, it is possible to shorten the cleaning time of the paint supply hose, that is, the color change time, and it also saves waste paint and thinner. Since the device can be used as is, it has a very large economical effect and also has the effect of improving work reliability.

[Brief explanation of the drawing]

Fig. 1 is an external view of the color changing device, Fig. 2 is an external view of one hot color, and Fig. 3 is an external view of the coating device according to the present invention (al is a side view, (bl is a front view, Fig. 4 is an external view of the color changing device). is an external view of another coating device according to the present invention. 1. 2... Two-way valve, 3... Joint, 4... Feeding vibrator, 5... Hose coupling, 6, 27...・・Feeding hose,
1.1 +-35... Main pillar, 12, 25... Arm, 13, 26... Painter, 14... Rotating plate, 1
．． 5, 21...Robot body, 22...Color changing device,
23...P hot running rail, 24...Color change device running rail, 28...Sublocant, 29...Robot drive chain, 30...Second sprocket, 3
DESCRIPTION OF SYMBOLS 1... Color change device drive chain, 32... Power sonochrome transmitter, 33... Power sinkle receiver, 34...
connecting rod

Claims (3)

[Claims] (1) A color change device travel rail is installed above and parallel to the robot travel rail, and a color change device is installed on the color change device travel rail, and the color changes in synchronization with the robot travel. A painting device characterized in that a changing device is made to run. (2) The first claim characterized in that the drive device for driving the robot and the drive device for driving the color changing device are connected by a transmission/reception mechanism that electrically transmits rotation synchronously.
Painting equipment described in section. (3) The coating device according to claim 1, further comprising a mechanical coupling mechanism disposed between the robot body and the color changing device disposed above the robot body.