JPH03159A - Pretreating device for coating - Google Patents

Abstract

PURPOSE:To reduce the length of the process by hanging a freely movable holding means from a guide rail and providing a selftraveling hanger through the holding means. CONSTITUTION:The holder 201 is provided with a supporting frame 213, four rods 214 with their upper ends fixed to the four corners of the frame 214 and a couple of body retainers 215. The hanger 20 is moved along the guide rail 16 by actuating a motor 207 for traveling. The body 10 held by the hanger 20 is moved above a spray tank 11 with its longitudinal axis orthogonal to the guide rail 16, then lowered into the tank 11, and washed with sprayed water. The washed body 10 is raised above the tank 11, then moved above a dipping tank 12, and dipped into the processing soln. Consequently, efficiency in pretreatment is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention is a coating pretreatment applied to a painting line for automobile bodies, etc. 7! Regarding equipment.

[Conventional technology]

FIG. 7 shows an example of a conventional painting processing apparatus that performs pre-painting treatments such as degreasing, water washing, tampering, and water washing.

In the figure, a conveying wire 1 is stretched along a coating line, and is moved to the left at appropriate times by a driving means (not shown).

The hanger 2 includes a hanging wire 2a whose upper end is connected to the conveying wire 1, and a holder 2b suspended by the wire 2a.

The holder 2b holds an automobile body 3, which is an object to be painted, and the body 3 is positioned with its longitudinal axis along the conveying wire 1.

When the body 3 is moved above the dipping tank 4A by driving the wire 1, a lifting means (not shown) provided on the hanger 2 is activated. As a result, the hanging wire 2
A is fed out and the body 3 is immersed in the tank 4A, where treatments such as water washing and degreasing are performed.

Next, the body 3 is raised and then moved to the spray booth 5A. Then, treatments such as spraying and washing are performed in this spray booth.

Thereafter, similar processing is performed in the immersion tank 4B and the spray booth 5B.

Note that the above-described transport method for the body 3 is called a single-tank tact method.

[Problem to be solved by the invention]

In the conventional painting pre-treatment device, the longitudinal axis 1 of the body 3!
(longitudinal axis) is along the conveying wire 1,
The widths of the immersion tank 4 and the spray booth 5 in the direction in which the wire 1 is disposed (horizontal direction in FIG. 7) must be set large, which increases the length of the process.

For example, if the processing time in tank 4B is the longest,
Since the bodies from other processes are not carried out until the processing time has elapsed, the processing efficiency is low.

In view of these conventional problems, an object of the present invention is to shorten the process length and improve processing efficiency! ! ! An object of the present invention is to provide a preloading treatment device.

(Means for solving the problem) Painting pretreatment gJ according to the present invention! The device includes a plurality of pre-painting treatment equipment arranged along the painting line, an ID rail placed above the Mae Hirosaki treatment equipment along the painting line, and a device movably suspended from the guide rail. loaded,
A traveling power, a holding means for holding the object to be painted in such a manner that the longitudinal axis of the object to be painted is perpendicular to the guide rail, and raising, lowering, and swinging the object to be painted through this holding means. and a self-propelled hanger comprising means, and among the above-mentioned i1 loading pre-treatment equipment, the width of the equipment with a long processing time in the direction of the painting line is set larger than the width of the other equipment in the direction of the painting line. ing.

[Effect]

The hanger moves by itself along the guide rail. The object to be painted is transported in such a manner that the longitudinal axis of the object to be painted is orthogonal to the guide rail. Further, in a tank whose width in the direction of the coating line is set large, the object to be coated is run in the liquid.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 shows an embodiment of a painting pretreatment system according to the present invention applied to a painting line for automobile bodies 10.

In this embodiment, the pretreatment equipment is a spray tank 11, a dipping tank 12, a dipping tank 13, a dipping tank 114, and a spray tank 15.
are arranged sequentially along the painting line.

A guide rail 16 is disposed above each of the above-mentioned facilities 11 to 15 along the painting line. A self-propelled hanger 20 is suspended from the guide rail 16.

Hereinafter, the structure of this hanger 20 will be explained with reference to FIGS. 3 and 4, which are a front view and a side view of the hanger.

As shown in FIG. 3, this hanger 20 is composed of a moving vehicle 200 and a holder 201.

The mobile vehicle 200 has an upper frame 203 and a lower frame 204 that are connected to each other by two ronds 202,
Arms 205 are protruded from the left and right sides of the upper surface of the upper frame 203, respectively.

Each arm 205 is provided with a resin wheel 206 on the upper side that contacts the upper surface of the guide rail 16, and the arm 205 on the - side
5 is attached with a motor 207 for driving wheels 206.

As shown in FIG. 4, a pair of winches 208 are attached to the lower surface of the upper frame 203.

The tips of the wires 209 wound around these winches 208 are led out from the front center and rear center of the lower frame 204 through pulleys 210, 211 and 212, respectively, to the lower surface side of the cough frame.

The holder 201 includes a support frame 213 and four O-rads 214 whose upper ends are attached to the squares of the support frame 213 at intervals in the front-rear direction (direction perpendicular to the plane of the paper in FIG. 3). Two rods 214 juxtaposed
A pair of body mounting tables 215 are installed between the body mounting tables 215.

The upper end of each rod 214 is pivoted so that it can rotate around the axis 11 parallel to the guide rail 16, and the stand 215 is also pivoted so that it can rotate around the same axis 1j2'. ing.

The hanger 20 configured in this way is connected to the travel motor 20.
By actuating 7, it is possible to move along the guide rail 16.

Further, by operating each winch 208 in the direction in which the wire 209 is paid out, the holder 201 can be lowered as shown in FIG. At this time, by changing the wire feeder of each winch, the body mounting table 215 is tilted as shown in the figure, and the body 10 is accordingly tilted.

Further, in the state shown in FIG. 3 in which the holder 201 is raised to the uppermost position, the bottle 216 provided at the top of the rod 214 is connected to the cylindrical body 216 provided on the lower surface of the lower frame 204.
17, thereby attaching the holder 2 to the mobile vehicle 200.
01 is fixed.

Note that the cable 218 shown in FIGS. 4 and 5 is
It is provided to ground the body 10.

The body 10 held by the hanger 20 is moved to above the spray tank 11 shown in FIG. 1 with its longitudinal axis perpendicular to the guide rail 16, and then the spray 4! [It has been lowered to within 11. And this 11
In step 1, for example, spray washing is performed.

Spray Body 10 after washing with water, spray! 11 and then moved above the immersion tank 12 and immersed in the processing liquid in this tank 12 in the manner shown in FIG.

That is, the body 10 is in the tank 1 with the rear side lowered.
2, and then the body 10 is swung within this bath 12. After that, the body 1 is placed in a position with the rear side lowered.
0 is raised and returned to a horizontal position.

Note that in this immersion tank 12, processes such as water washing and surface conditioning are performed.

The immersion tank 13 in the next process is installed in the left and right direction (guide rail 1
It has a continuous tank structure in which the width in the longitudinal direction of the immersion tank 12 and 14 is set to about three times that of the other immersion tanks 12 and 14.

The body 130 that has been transported above the immersion tank 13 is lowered into the tank 13 and then moved laterally.

In this tank 13, only the above-mentioned lateral movement valve can ensure a longer processing time than in the other tanks. Accordingly, in this embodiment, processes such as dehydration and film formation, which require long processing times, are performed in this tank 13.

Next, processing such as washing with water is performed in the dipping tank 14 and the spray tank 15, respectively, and then the body 10 is transported to equipment for the next process (for example, electrodeposition coating equipment).

Body 10 in the above-named immersion baths 12, 13 and 14
The rocking is performed in order to remove air pockets formed on the surface of the body 10 and eliminate untreated areas, and in this embodiment, the body 10 is rocked at a rocking angle of 10° to 17°. I'm letting you do it. Note that this swinging is performed by alternately driving each winch 208 shown in FIG. 4 in different directions.

Furthermore, the rear side of the body 10 is lowered when the body 10 is inserted into and taken out from the multi-tubs 12 to 14, and this is to allow easy and rational loading and unloading.

That is, since there are many openings on the rear side, by lowering this rear side and entering the tank, the processing liquid can enter the body 10 more quickly, thereby allowing smooth entry into the tank. Furthermore, by lowering the rear side and unloading the tank, the processing liquid can be quickly removed from the body 10, thereby reducing the amount of processing liquid taken out and allowing smooth unloading.

Note that when entering the tank, the body 10 is lowered at high speed until it reaches the appetizer liquid and at low speed until it reaches the crowd.

It is then lowered at a medium speed until it is completely submerged, and the above-described rocking is performed at the lowering end.

FIG. 6 illustrates a series of painting pretreatment steps performed in an actual painting line.

In the figure, S indicates spray treatment and D indicates i! ij
i processing is shown. In addition, ``double'' indicates that the immersion tank has a single-tank structure (see tanks 11, 12, and 14 in Figure 1), and ``ren'' indicates that the tank is of continuous tank structure (see tank 13 in Figure 1). It shows.

Note that the present invention can be effectively applied not only to automobile bodies but also as a pretreatment device for a painting line that paints other objects to be painted.

〔Effect of the invention〕

According to the present invention, since the object to be coated is transported in such a manner that the longitudinal axis of the object to be coated is perpendicular to the guide rail, the length of the pretreatment process can be shortened.

In addition, in the pretreatment process that requires long-term treatment, the objects to be packaged are moved laterally within a tank (is> in the example) that has a wide width in the direction of the conveyance line.
Pretreatment efficiency can be improved.

In other words, when a single tank is used for long-time processing, waiting time will occur in other processes, but according to the present invention, which has a self-propelled hanger and a single circulation width tank, a wide @ Since objects to be coated can be transported independently within the machine, the above-mentioned waiting time can be eliminated and the efficiency of pre-painting treatment can be improved.

[Brief explanation of the drawing]

FIG. 1 is a conceptual diagram showing an embodiment of the painting pretreatment device according to the present invention, FIG. 2 is a conceptual diagram illustrating the mode of body posture control during immersion, and FIGS. 3 and 4 are: A front view and a side view conceptually showing the configuration of the hanger, respectively.
Figure m5 is a conceptual diagram showing the action of the hanger, and Figure 6 is a series of i! on an actual painting line. ! FIG. 7 is a flowchart illustrating a pre-painting treatment process, and is a conceptual diagram illustrating a conventional painting pre-treatment apparatus. 10...Body, 11-15...Processing tank, 16...
・Guide rail, 20... hanger, 200... transfer #
h car, 201... holder, 207... motor, 20
8...Winch. Applicant Suzuki Motor Co., Ltd. Fl-8, t. Figure 3 Figure 4 Figure 5

Claims (1)

[Scope of Claims] A plurality of pre-painting treatment equipment arranged along the painting line; a guide rail disposed above each of the pre-painting equipment along the painting line; moving to the guide rail; A holding means which is freely suspended and holds the object to be painted in such a manner that the traveling power and the longitudinal axis of the object to be painted are orthogonal to the guide rail, and the object to be painted is held through the holding means. It has a self-propelled hanger equipped with means for raising, lowering and swinging the equipment, and among the above-mentioned painting pre-treatment equipment, the width in the painting line direction of the equipment with the longest processing time is the same as the width in the painting line direction of the other equipment. A painting pretreatment device characterized by being set larger than the width.