JPH0422460A - Automatic painting apparatus - Google Patents

Abstract

PURPOSE:To automatically coat the top part of a work within a short time by one gate without requiring post-correction by mounting painting guns, actuators driving the painting guns up and down and actuators driving said guns forwardly and rearwardly on as pair of left and right painting machines. CONSTITUTION:A support 14 is reciprocally moved along a guide rail 13 in a horizontal direction by a servo motor 15 and a chain 16. The strokes of a lift table 18 are controlled in four stages by the first and second up-and-down driving cylinders 22a, 22b. Further, the forward and rearward operation of painting guns 11a, 11b due to a forward and rearward driving cylinder 24 and the tilting operation of said guns due to a tilting driving cylinder 29 are performed. By this method, the painting guns sufficiently follow the coating surface of a work having a complicated shape and painting work can be completed within a short time.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an automatic coating device for coating multiple surfaces of a workpiece.

<Prior art> For example, when painting a U-shaped automobile bumper, as shown in FIG. The gates 2b are installed in parallel in the transport direction of the workpiece W, and the first gate 2a'''
C'' The top surface and two side edges 6 of the workpiece W are painted by the painting gun 4a, the other side edges 7 are painted by the painting gun 4b at the second gate 2b, and both sides 8 of the workpiece W are painted at the third gate 5. is being painted.

<Problems to be Solved by the Invention> The conventional automatic painting method described above requires two games 1 to 1 to paint the top part of the workpiece W;
The space becomes larger and more painting time is required. In addition, for complex shapes of workpieces, post-correction was required because the paint gun could not sufficiently follow the painted surface.6 With the present invention, post-correction is required for the top part of the workpiece in a short time with one gate. The purpose of this dispute is to make automatic painting possible without having to use the paint, and to solve the above-mentioned problems of the conventional method.

Means for Solving the Problems> The gist of the present invention to achieve the above object is to provide a workpiece that is horizontally spanned between a pair of support columns that are erected in the vertical direction, sandwiching the axis of the workpiece in the conveying direction. a guide rail fixed to the kite rail, a support body slidably guided and mounted on the kite rail and reciprocated by a drive device, and a pair of left and right paint sprayers supported by the support body with the guide rail sandwiched therebetween. The pair of left and right painting machines includes a painting gun, an actuator that drives the painting gun up and down, and an actuator that drives it back and forth, and at least one of the painting guns can be tilted by the actuator.

<Operation> With the above configuration, the top and side surfaces of the workpiece are coated with the tiltable paint gun of one of the pair of left and right paint machines installed at one gate.
The other side is simultaneously painted using the paint gun of the other paint machine.

<Example> Hereinafter, an example of the present invention will be described based on the drawings. FIG. 1 and FIG. 2 are schematic explanatory diagrams of the present invention. That is, 1
2 is a painting booth, and 2 is a gate for painting the top part of the workpiece W, which is a single gate. This gate 2 has a pair of left and right coating machines 10a and 10b, each of which is provided with a coating gun t1a and 11b that can be tilted up and down, back and forth, and tiltable. The gates 2 are referred to as 1 to 3 reciprocating units, and 5 is referred to as a side reciprocating unit for painting both sides 8 of the work W.

In the top reciprocating unit of the gate 2, as shown in FIG.
The painting gun 11a is operated back and forth, and one painting gun 11a paints the top surface and side surface 6 of the workpiece W including the tilt operation, and the other painting gun 1? The other side surface 7 is painted in step b.

Next, the specific structure of the gate 2 will be explained with reference to FIGS. 3 to 5. In FIG. 3, reference numeral 12 denotes a pair of support columns, which are erected in a vertical direction sandwiching the axis of the workpiece W in the conveying direction.

Reference numeral 13 denotes a guide rail that is horizontally spanned and fixed between the pair of support columns 121. Reference numeral 14 denotes a support body slidably guided and mounted on the guide rail 13. This support body 14 is reciprocated along the guide rail 14 by a drive device including a servo motor 15 and a chain 16.

As shown in FIG. 4, the support body 14 supports a pair of left and right coating machines 10a and 10b with the guide rails 14 sandwiched therebetween.

Since the main configurations of the pair of left and right paint machines 10a and 10b are the same, the construction will be explained using the paint machine 10a as a representative with reference to FIG.

A fixed support base 17 is fixed to the support body 14, and a first vertical drive cylinder 22a is installed on this base.

An elevating table 18 is arranged below the fixed support table 17. On this lifting platform 18, there is a second vertical driving cylinder 22a on the same axis as the first vertical driving cylinder 22a, and these first and second vertical driving cylinders 22a, 22.
A kite rod 20 whose axis is parallel to b is fixedly installed, and a second
The operating rod of the vertical driving cylinder 2211 and the operating rod of the first E lower driving cylinder 22a are coupled via a joint. Further, the guide rod 20 is connected to the support body 14.
It is guided through a guide sleeve 19 fixedly attached to the guide sleeve 19 .

21 is a rotation stop bar, and 23 is a vertical position sensor.

Said! ? - At the bottom of the descending platform 18 is a cylinder 24 for longitudinal drive.
is installed. A longitudinal moving table 25 is attached to the operating shaft of the longitudinal driving cylinder 24, and is guided and supported by a kite rod 26 whose axis is parallel to the longitudinal driving cylinder 24.

The painting gun 11a is mounted on a pivot 27 on the back and forth moving table 25.
A tilt driving cylinder 29 is pivotally connected in a floating manner between a bracket 28 which is supported in a tiltable manner and fixed to the back and forth movable table 25 and the painting gun 11a.

The operation of the above configuration will be explained. As described above, the support body 14 is reciprocated in the horizontal direction along the kite rail 13 by the servo motor 15 and the chain 1G.6 A pair of left and right paint machines 10 are supported by the support body 14.
a, 10b operate as follows. The lifting platform 18 is the first
．． The stroke is adjusted in four stages by the two vertical drive cylinders 22a and 22b. That is, the operating stroke of the first vertical driving cylinder 22a alone, the operating stroke of the second vertical driving cylinder 22b alone, the working stroke of the sum of both the 1.2 vertical driving cylinders 22a and 22b, and the 1.2nd vertical driving cylinder 22b. Vertical drive cylinder 22a
, 22b.

Furthermore, the painting guns 11a, 11 are operated by a cylinder 24 for longitudinal drive and a cylinder 29 for tilt drive.
Perform the tilt operation of b. In some cases, the coating gun 11b of the other coating station 110b may be fixed at a fixed angle.
It is also possible to make it impossible to tilt.

As shown in FIG. 2, the above-mentioned multidimensional operation allows the two coating guns 11a and 11b to be operated simultaneously using one gate to automatically coat the top portion of the workpiece W on multiple surfaces.

In addition, if the 1.2 vertical drive cylinders 22a and 22b are cell lock type cylinders, it is possible to set the number of cell rotors + 2 crotches with one cylinder.
．． In place of the two vertical drive cylinders 22a, 22b, the longitudinal drive cylinder 24, and the tilt drive cylinder 29, it is also possible to adopt a configuration in which the rotation speed is controlled by an encoder using a ball screw method using a servo motor as the drive source.
In this case, stepless control is possible.

<Effects of the Invention> As described above, according to the present invention, two coating guns are adjusted horizontally, vertically, longitudinally, and tilted in multiple dimensions using two coating machines with one gate, and the workpiece can be coated on multiple surfaces. Since it is configured to simultaneously paint the parts, it is possible to sufficiently follow the painting surface of a workpiece with a complex shape, and moreover, the painting work can be completed in a short time.

In addition, the space of the painting booth can be reduced.
It has advantages such as lower setup DI costs.

[Brief explanation of drawings]

Fig. 1 is a plan view of a painting booth in which the device of the present invention is installed, Fig. 2 is a perspective view showing an example of painting by the device of the present invention, Fig. 3 is a front view of the gate of the device of the present invention, and Fig. 4 is a main FIG. 5 is a side view of the main parts of the inventive device, FIG. 5 is a detailed side view of the same, FIG. 6 is a plan view of a painting booth using the conventional device, FIG. 7 is an explanatory diagram of painting using the conventional device, and FIG. It is a sectional view. 2...Gate, 10a, 10b-...Painting machine, 11
a, 11b...painting gun, 12...support, 13.
... Kite rail, 14 ... Support body, 17 ... Fixed support base, 18 ... Lifting platform, 22a ... First vertical drive cylinder, 22a ... Second vertical drive cylinder, 2
4... Cylinder for longitudinal drive, 29... Cylinder for tilt drive.

Claims (1)

[Claims] A guide rail is fixed and spanned horizontally between a pair of vertical supports sandwiching the axis of the workpiece transport direction, and a drive device is installed to guide the guide rail so that it can slide. It consists of a support that moves back and forth, and a pair of left and right paint machines that are supported by the support with the guide rails sandwiched between them. An automatic painting device comprising an actuator that drives back and forth, and at least one of the painting guns can be tilted by the actuator.