JPH0422628B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an electrostatic coating method and apparatus for automatically coating by installing a coating robot and an electrostatic coating machine on the same line. .

[Conventional technology]

Conventionally, when automatically electrostatically painting the exterior of an automobile body using a rotary atomizing electrostatic coating machine attached to a reciprocator and a painting robot, it was necessary to use a rotary atomizing electrostatic coating machine attached to a reciprocator in combination with a painting robot to electrostatically paint the exterior of an automobile body. There are 8 cars in total.
Twelve painting robots and a side reciprocator and a top reciprocator each having a rotary atomizing electrostatic coating machine are installed along the painting line, and a trolley on which an automobile body is placed is placed along the painting line of this painting booth. Automobile bodies are painted by a paint robot and a top reciprocator while being conveyed continuously at a constant speed by a conveyor.
At that time, in the painting line of the painting robot, each painting robot takes charge of painting the very details of the car body, and in the painting line of the side reciprocator and the top reciprocator, the painting robot performs the painting. Electrostatic painting is being carried out over a wide range of general areas that were not painted on line.

[Problem to be solved by the invention]

However, in this electrostatic painting method, one of the painting robots is used in the painting line of the painting robot.
If a robot breaks down, it will no longer be possible to paint the area that the faulty painting robot was in charge of, which has the drawback of requiring the entire painting process to be stopped for repairs.

Therefore, the present invention was made in order to eliminate the above-mentioned drawbacks, and when an electrostatic coating machine and a coating robot are installed on the same line to automatically perform painting, it is possible to avoid problems even if the coating robot breaks down. Another object of the present invention is to provide an electrostatic coating method and a coating device that can perform coating without stopping the entire coating process line.

[Means to solve the problem]

Therefore, the electrostatic coating method of the present invention involves the steps of transporting the object to be painted along a painting line, painting the details of the object with a coating robot, and painting the general parts of the object with an electrostatic coating machine. In a painting method having a painting process, a plurality of painting equipment for the painting process using the painting robot are installed in parallel on a painting line, and if any of the plurality of painting equipment breaks down, the remaining painting equipment is used to cover the object to be painted. The details were painted.

Further, the electrostatic coating apparatus of the present invention includes a first conveyor configured to intermittently convey the object to be coated along the coating line, and a second conveyor configured to continuously convey the object to be coated along the coating line. The first conveyor is connected to the first conveyor in a continuous manner so as to be transferable, and a plurality of side conveyors are arranged in parallel to connect to the first conveyor via rotatable turntables, and a painting robot is installed on the side conveyor. In addition to forming a chamber, a coating chamber is formed in which an electrostatic coating machine is provided on the second conveyor.

[Effect]

According to the above-mentioned method, a plurality of painting equipment in the painting process using painting robots are installed in parallel on a painting line, and if any of these painting equipment breaks down, the remaining painting equipment is used to cover the object to be painted. Since the details are painted, painting can be continued without stopping the entire painting process line.

〔Example〕

Embodiments of the present invention will be described below based on the accompanying drawings.

Figures 1 and 2 show an embodiment of the present invention, with Figure 1 being a plan view of an electrostatic coating device, and Figure 2 being a longitudinal sectional view of the conveyor portion taken along the - line in Figure 1. be.

In FIGS. 1 and 2, reference numeral 1 denotes a painting booth formed in a tunnel shape, and a booth floor 1a of this painting booth 1 is connected to a painting line, which is the conveyance direction of an automobile body W, which is an object to be painted. A first conveyor 2 configured to intermittently convey automobile bodies W and a second conveyor 3 configured to continuously convey automobile bodies W are laid along the conveyor 2. , 3 are further provided consecutively by a traverser 4 so as to be transferable.

Furthermore, side conveyors 6 and 6a are installed in parallel with the first conveyor 2 via two turntables 5 and 5a that are configured to rotate by 90 degrees with respect to the first conveyor 2. The side conveyors 6, 6a are connected to the turntables 5, 5a.
By rotating through 90 degrees, it is connected to the first conveyor 2 provided on the turntables 5, 5a.

Further, each of the side conveyors 6, 6a is divided by a wall plate 7, 7a into a painting room 8, 8a.
Painting robots 9, 9a, 9b, and 9c are provided on both sides of the painting chambers 8 and 8a, respectively, and run parallel to the side conveyors 6 and 6a.

Furthermore, a coating room 1' for performing electrostatic coating is formed in the area where the second conveyor 3 is installed, and on both sides of the second conveyor 3 in this coating room 1', there are parts for car bodies W. Side reciprocators 10, 10a for painting the side surfaces are disposed, and a top reciprocator for painting the horizontal surface of the automobile body W is disposed behind the side reciprocators 10, 10a. ing. And these side reciprocators 10, 10a
A rotary atomizing type electrostatic coating machine 12, 12a, 12b is attached to the top reciprocator 11, respectively.

Furthermore, the first conveyor 2, the second conveyor 3, and the side conveyors 6, 6a each include a roller chain 13 that is rotationally driven and a pusher 14 that is attached to the roller chain 13, as shown in FIG.
It consists of On both sides of each conveyor 2, 3, 6, and 6a, rails 17 are provided to guide rollers 16, 16a provided on the painting truck 15, and the conveyance of the painting truck 15 is carried out by a roller chain. A pusher 14 provided at 13 engages with a painting cart 15 for painting.

In the electrostatic coating apparatus configured as described above, coating is normally performed as follows. The automobile body W placed on the painting trolley 15 is conveyed to the turntable 5a by the first conveyor 2 and rotated by 90 degrees by the turntable 5a. Next, it is conveyed into the coating room 8a by the side conveyor 6a and stopped. Here, details such as the front pillar, center pillar, door area, etc. of the automobile body W are painted by the painting robots 9b and 9c. On the other hand, the automobile bodies W placed on other painting carts 15 are conveyed to the turntable 5 by the first conveyor 2 while the automobile bodies W in the painting room 8a are being painted. It is rotated 90 degrees by the turntable 5, conveyed into the coating room 8 by the side conveyor 6, and stopped. Here, the same parts as the automobile body W in the painting room 8a are painted.

The automobile body W that has been painted in the painting room 8a is
While the car body W in the painting room 8 is being painted,
Together with the painting trolley 15, it is transported in the opposite direction to the turntable 5a by the side conveyor 6a. Painting trolley 15 transported to turntable 5a
is rotated 90 degrees and conveyed to the traverser 4 by the first conveyor 2. Thereafter, the car body W of the painting trolley 15 is moved to the second position by the traverser 4.
While conveyed to the conveyor 3, the second conveyor 3 passes through the side reciprocators 10, 10a and the top reciprocator 11 of the coating room 1' at a constant speed, and then the electrostatic atomizers 12, 12a and 12b. Automobile body W on the painting trolley 15
Painting of general surfaces will be carried out. Further, the automobile body W painted in the painting room 8 is also conveyed to the second conveyor 3 by the side conveyor 6, turntable 5, first conveyor 2, and traverser 4 in the same manner as described above, and the general surface is painted. It is done.

In this way, the car body W is painted, so if, for example, the painting robot 9c installed in the painting room 8a breaks down, the car body W is not transported into the painting room 8a and is transferred to another painting robot. By transporting only into the chamber 8, detailed painting can be continued, so that the entire painting process line does not have to be stopped and a reduction in the operating rate can be suppressed.

Further, the automobile body W, which is the object to be painted, is transferred to the painting robot 9, while the side conveyors 6, 6a are stopped.
9a, 9b, and 9c, it is possible to reliably paint the fine details that the painting robot originally has.

Furthermore, since the car body W is coated by the electrostatic coating machines 12 and 12a while being conveyed at a constant speed by the second conveyor 3, it is possible to quickly coat a wide area, which is a characteristic of electrostatic coating machines. I can do it.

FIG. 3 shows another embodiment of the present invention, and is a plan view of an electrostatic coating apparatus.

In FIG. 3, reference numeral 20 denotes a tunnel-type painting booth, and on the floor of this painting booth 20 there is a tube configured to convey the objects to be coated intermittently along the coating line of the objects to be coated. 1 conveyor 26
A second conveyor 3 is connected to the first conveyor 26 so as to be transferable by a traverser 30, and is configured to continuously convey objects to be coated.
1 are installed in two sets in parallel in the longitudinal direction of the painting booth 20. Furthermore, the first
A third conveyor 27 is disposed on the conveyor side 26 in order to form a continuous conveyance line in the longitudinal direction of the coating booth 20.

Further, a side conveyor 2 is connected to the first conveyor 26 via two turntables 28 configured to be rotatable by 90 degrees with respect to the first conveyor 26.
9 are arranged in parallel, and this side conveyor 29 is connected to a first conveyor 29 provided on the turntable 28 by rotating the turntable 28 through 90 degrees.

Furthermore, the painting booth 20 has four painting rooms 22, 22a, 22 separated by a booth wall 21.
b, 22c are provided, and this painting room 22,
Two painting robots 23 are installed at 22a, 22b, and 22c, respectively. Further, a painting room 34 is formed in the area where the second conveyor 31 is arranged, and the second conveyor 31 of this painting room 34 is
There are side reciprocators 24, 24a on both sides of the
and top reciprocators 25, 25a are installed, and each reciprocator 24, 24a,
A rotary atomizing type electrostatic coating machine 33 is attached to 25 and 25a.

In addition, 32 is each conveyor 26, 27, 29, 31
There are a pair of rails placed on both sides of the.

The electrostatic coating apparatus configured as described above is suitable for the top coating process of solid coating or metallic coating, and is particularly suitable for metallic coating in which base paint and clear paint are applied. Also, in this electrostatic coating device, similarly to the first embodiment,
For example, if the painting robot 23 installed in the painting room 22 breaks down, the painting robot 23 in another painting room 22a can continue painting the details.

〔Effect of the invention〕

As described above, in the present invention, a plurality of painting equipment for the painting process using a painting robot are installed in parallel on the painting line, so that if any one of the plurality of painting equipment breaks down, the remaining painting equipment can be used to cover the object to be painted. Since the details can be painted, the painting work can be continued. Therefore, it is not necessary to stop the entire painting process line, and it is possible to suppress a reduction in the operating rate.

[Brief explanation of drawings]

1 and 2 show an embodiment of the present invention, in which FIG. 1 is a plan view of an electrostatic coating device, FIG. 2 is a longitudinal cross-sectional view of the conveyor portion taken along the line - in FIG. FIG. 3 is a plan view of an electrostatic coating apparatus showing another embodiment of the present invention. 1,20...Painting booth, 2,26...First conveyor, 3,31...Second conveyor, 4,30...
... Traverser, 5, 5a, 28 ... Turntable, 6, 6a, 29 ... Side conveyor, 7, 7
a, 21...Wall plate, 1', 8, 8a, 22, 22
a, 22b, 22c, 34...painting room, 9, 9
a, 9b, 9c, 23...painting robot, 10,
10a, 24, 24a... Reciprocator for side, 11, 25, 25a... Reciprocator for top, 12, 12a, 12b, 33... Electrostatic coating machine, 13... Roller chain, 14... Pusher, 15 ...Painting trolley, 16, 16a...Roller, 17,32...Rail.

Claims (1)

[Scope of Claims] 1. The process of transporting the object to be painted along a painting line and painting the details of the object with a coating robot, and the step of painting the general parts of the object with an electrostatic coating machine. In this painting method, a plurality of painting equipment for the painting process using the painting robot are installed in parallel on the painting line, and if any of these painting equipment breaks down, the remaining painting equipment is used to cover the details of the object to be painted. An electrostatic painting method characterized by painting. 2 Along the coating line, a first conveyor configured to intermittently convey objects to be coated and a second conveyor configured to continuously convey objects to be coated are provided in succession so as to be transferable. Also, a plurality of side conveyors connected to the first conveyor via rotatable turntables are arranged in parallel,
Furthermore, the electrostatic coating apparatus is characterized in that the side conveyor is provided with a coating room provided with a coating robot, and the second conveyor is provided with a coating room provided with an electrostatic coating machine.