JPS60116799A - Automatic treating device for electrodeposition painting - Google Patents

Abstract

PURPOSE:To develop an automatic treating device for electrodeposition painting which changes over quickly paints and is simple in automation mechanism by disposing plural electrodeposition painting tanks as well as a pretreating tank and post treating tank in circulating positions and subjecting works to an electrodeposition painting treatment while moving continuously the works in a work conveying path provided above said tanks. CONSTITUTION:Plural electrodeposition paint tanks 4a, 4b, 4c in succession to a pure water treating tank 3 as a pretreatment and a paint recovering tank 5 are arrayed on one row and a washing tank 6 and a rinsing shower 7 are placed in the part where the direction changes. A bright dipping tank 8, a rinsing tank 7, a washing shower 10, a setting tank 11 for removing water drops and an air blower 12 are arrayed in succession thereto. A conveying path 2 for works 26 passing right above these tanks is provided so as to return again to the original position. The works 26 are hung to vertically movable hangers 25 in a loading position L by a central driving and balancing device 20. The works are electrodeposition-painted in the desired electrodeposition paint tanks and are passed through the post treatment stage, then the works are removed from the path 2 in an unloading position U.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an automatic electrodeposition coating processing apparatus in which workpieces (objects to be coated) are successively conveyed between processing steps.

(Prior Art) In electrodeposition coating, it is necessary to change the electrodeposition paint depending on the required coloring. In general, in automatic electrodeposition coating processing equipment that has a claw-feeding workpiece transport mechanism, the workpiece transport pitch is constant, so when changing paint, the paint in the electrodeposition paint tank placed on the workpiece transport path is removed. A replacement method is used. However, this method is inefficient because it requires a lot of effort and time to replace the parts.・Also, a configuration is adopted in which a trolley is attached to the electrodeposition paint tank and the cypress is replaced using the trolley. In this case, not only is it necessary to secure a large space for the replacement work, but the replacement work becomes troublesome as the number of colors increases. Moreover, in order to achieve automation, the mechanism must be complicated and large, making it difficult to employ an automatic mechanism.

(Objective of the invention) When using multiple types of electrodeposition paints, it is possible to quickly and easily change the paints, and there is no need to secure a large space for the changeover, and the automation mechanism has a simple configuration. To provide an automatic electrodeposition coating processing device.

(Structure of the Invention) This is an automatic electrodeposition coating processing device that has the following essential requirements.

← A claw-feeding workpiece conveyance mechanism is provided in which workpieces are conveyed on horizontal rails at a constant pitch, so that workpieces are conveyed one after another between each processing process.

(To) A plurality of electrodeposition baths are arranged in a line along the conveyance path.

(C) Provide a feeding device that transports the workpiece from the previous process position to a predetermined electrodeposition tank along the rail, and a delivery device that transports the workpiece from the electrodeposition tank to the next process position along the rail. .

(Example) In FIG. 1, a workpiece conveyance path 2 extending horizontally in an oval shape is arranged above the equipment table 1, and various processing process members are arranged below the path 2 along the path 2. is equipment stand 1
is installed on top. These processing process members are, in order from the loading position in the transport direction (direction of arrow Xi): pure water treatment tank 8, electrodeposition paint tanks 4a, 4b, 4C1, paint recovery tank 5, washing tank 6, washing shower 7, and gloss dipping. A tank 8, a washing tank 9, a setting tank 11 for removing water droplets from the washing shower 101, and an air blowing device 12 are provided, and the conveyance path 2 continues in a circular manner from the unloading position U to the loading position. Each of the electrodeposition paint tanks 4a, 4b, and 4c is configured to hold various types of different paints. In addition, the gloss dipping tank 8 has a trolley (not shown) on the bottom surface, and if it is not needed, the imaginary line 8°
It can be pulled out as shown in the figure.

The transport path 2 includes a drive balance device 20 installed in the center.
As shown in Fig. 2, the trap is constructed so that the whole can be moved in the vertical direction. Path 2 more specifically connects the copper plate and P
It consists of an annular work rail 21 made of a vC resin plate, and a copper plate is used only in the part of the rail 21 that requires electricity (section 11 in FIG. 1). The rail 21Fi is fixed to the drive balance device 20 by the horizontal arm 22,
- Extends on a horizontal plane. A claw feeding device 28 is arranged parallel to the rail 21 at a distance above the rail 21, and a claw 24 provided on the device 28 is in contact with a hanger 25 slidably hung on the rail 21. The claws 24 are arranged in lθ membranes at equal intervals by the device 28 along the conveyance path 2 (
1), each mold 24 is connected to a drive motor (not shown) built into the drive balance device 20 via a link mechanism (not shown). As a result, each mold 24 reciprocates along the conveyance path 2 at one-foot pitches. Further, the hanger 25 is made of a conductive material such as a copper alloy, and a workpiece 26 is hung thereon.

Next, the feeding device will be explained. In FIG. 8, which is a sectional view taken along the line 1--■ in FIG.
is arranged perpendicular to path 2 (FIG. 1). Axis 3
2 is provided with a gear 88, and the gear 8B is the claw feeding device 2B.
It meshes with a rack gear 85 fixed to the upper surface of the arm portion 84. The rack gear 35 extends between the section 12 from the pure water treatment tank 3 to the paint recovery tank 5 along the path 2 in FIG. 8c2) The motor 81 has two brackets 86 and 86t on its lower surface, and two axles 87 parallel to the shaft 82 are rotatably fitted into the bracket 86. The two axles 87 are juxtaposed perpendicularly to the longitudinal direction of the rack gear 85, and a total of four wheels 38, 38 configured as bearings are provided at both ends of each axle 37. Each wheel 88
．． 38 is rotatably fitted to two guide rails 89.81C, and each guide rail 89.89 is connected to rack gear 3.
5 and has the same length as the rack gear 85. Further, the rail 89 is fixed to the arm portion 84 via the flat plate 40.

Further, the upper end of an L-shaped arm 45 is fixed to the lower surface of the motor 81, and two rollers 46.4 rotating around a vertical axis are mounted on the upper surface of the tip of the lower end of the arm 45 on the claw feeding device 28 side.
6 is provided. Roller 46.46#i arm part 8
Support rails 47 formed on the lower surface of the rack gear 85 are sandwiched from both sides, and the rails 47 extend in parallel with the rack gear 85 by the same length. The upper end of a 5-shaped sub-arm 48 is fixed to the lower end surface of the arm 45. Zabu arm 48
A bottle 49 projecting downward is fixed to the lower horizontal portion of the
The base of a bushing 500 is rotatably supported on the bottle 49. The bushing 50 is always elastically biased by a tensioned spring 51 in a direction in which the tip thereof comes into pressure contact with the work rail 21.

The work rail 21 has a splint 5 narrower than the rail 21.
5, and a splint plate 55 is fixed to the arm 22. The hanger 25 hung on the rail 21 has an upper hook portion 56 that is slidably fitted to the rail 21.
The vertical plate portion 57 of No. 6 comes into contact with the bushing 50. A tongue piece 58 protrudes from the upper end of the hook portion 56, and the lower end of the claw 24 comes into contact with the tongue piece 58.

The upper end of the pawl 24 is supported by a bracket 601C of a rail member 59 so as to be rotatable about the horizontal axis, and the rail member 59 extends along the path 2 (FIG. 1).

The rail member 59 includes a large number of rollers 6 that are rotatable around a horizontal axis.
Each roller 61 is supported by a bracket 65 formed on the lower surface of the arm portion 84.

Note that the rail member 59 is connected to a drive motor built in the drive balance device 20 (FIG. 1) via a link mechanism (not shown), thereby causing the rail member 5 to move on the roller 61.
9 reciprocates at a constant pitch. Further, as shown in FIG. 4, one end of the x-ring 51 is locked to a vertical pin 62, and the pin 62 is fixed to the tip of a bracket 63 whose base is fixed to the pin 49, and the pin 62 is fixed to the tip of a bracket 63 whose base is fixed to the pin 49. The bottle 49 is placed on the substantially opposite side to the bottle 64 of the bottle 49 .

The feeding device 70 also has the same structure as the feeding device 80, as shown in FIG. 8, Figure m4.

Further, the feeding device 80 has a pure water treatment tank 8 and an electrodeposition paint tank 4a, 4.
b, 40 (FIG. 1), and the feeding device 70 moves the electrodeposited paint 14a on the same rack gear 85 and guide rail 39.

4b, 4C and the paint recovery tank 5 (FIG. 1).

Next, the operation will be explained. First of all, 4m of each electrodeposition paint shown in Figure 1! 4
Decide which tank to use among a, 4b, and 4C.

For example, if the tank 411 is to be used, a button on a control box (not shown) is operated to set that fact. Next, press the start button and hang the workpiece 26 (both shown in FIG. 2) on the hanger 25 from the loading position shown in FIG.

When the device operates, the work rail 21 and the claw feeding device 23
is automatically raised to the position indicated by the imaginary line in FIG. 2 by the drive balance device 20, and the workpiece 26 is lifted.

Subsequently, as the claw 24 moves along the path 2 by a certain pitch, the hanger 25 slides on the rail 21 and moves to the first position.
It is placed above the pure water treatment tank 8 in the figure. At this time, since the feeding device 30 in FIG. 4 is placed above the tank 8,
The hanger 25 pushes away the button 50 and advances forward of the device 80, resulting in the state shown in FIG. 4, and then the claw 24 returns to the rear.

When the path 2 is lowered by the device 20, the workpiece 26 (second
) is immersed in the processing tank 8.

During processing in tank 8, the next hanger 25 from the 10th position
is multiplied by a new work 26. When the processing in the tank 8 is completed, the work rail 21 and the claw feeding device 28 are raised again by the drive balance device 20 to the position indicated by the imaginary line in FIG. Subsequently, the claw 24 moves by a certain pitch and a new workpiece 26 is placed on the processing tank 8, but at the same time as the claw 24 operates, the feeding device 30 also operates. When the sub motor 31 starts, the gear 83 rolls on the rack gear 35, and the arm 4
5. Connect the 7 gar 25 to the rail 2 through the bushing 50 etc.
1 and transported onto the electrodeposition paint tank 4b. hanger 2
When a limit switch (not shown) detects that the device 5 has reached a predetermined position, the feeding device 30 stops there, and then only the device 30 returns to the top of the tank 8. At the same time as the paint &30 starts to be returned, the delivery device 70, which has been waiting above the paint recovery tank 5, is activated and moves to the top of the tank 4b. At this time, the bushing 50 climbs over the hanger 25, and the device 70 stops in the same position as shown in FIG. Next, when the path 2 is lowered by the mounting #20, each work 26 is moved to the tank 4b and the dan 3, respectively.
The treatment is carried out by immersing it in the water.

During processing at $8.41 each, a new workpiece 26 is hung on the next hanger 25 from the loading position. Various 8.
When the process at 4b is completed, the work rail 21 and the claw feeding device 28 are raised. Next, the claw 24 and the feeding device 8
0 and the delivery device 70 move to move each workpiece 26 to the next step. Each workpiece 26 has a paint recovery tank 5,
The electrocoating paint tank 4b and the pure water treatment tank 8 are placed on top of each other, and then the feeding device 30 returns to the top of the tank 8, and the feeding device 70 returns to the top of the tank 4b. As the path 2 is lowered by the device 20, each workpiece 26 is processed in its respective tank 8.4b15.

Thereafter, similarly, the workpiece 26 is sequentially fed into each processing step by vertical movement by the drive balance device 20, sliding in two directions of the path by the claw 24, and movement of the feeding device 80 and the feeding device 70. Rare processing is progressing. Further, at the loading position, each time each workpiece 26 is fed at a constant pitch, a new workpiece 26 is applied, and the processing is continued.

The workpiece 26 has reached the unfourth position U after the processing has been completed.
is removed from the hanger 25.

In addition, in Figure 1, gloss treatment is also performed,
If unnecessary, the entire tank 8 is pulled out to the position of the imaginary line 8'.

(Effect of the invention) A plurality of electrodepositing tanks 4a, 4b, 4c)
Workpieces 26t- are arranged in a line along the transport path 2, and the workpieces 26t-
A feeding device 3o that transports the workpiece 26 along the rail 21 from a predetermined electrodeposition tank to a predetermined electrodeposition tank, and a delivery device 7o that transports the workpiece 26 from the electrodeposition tank to the next step position along the rail 21 are provided. Therefore; e) Change of paint can be done quickly and easily.

Φ) There is no need to secure a large space for switching hoe)
The automation mechanism can be configured simply.

(Another Embodiment) (a) The number of electrodeposition paints '111 is not limited to eight, and may be any number as long as it is plural.

) Cypress 4a, 4b% 4c may be placed in the curved part of warp #&2.

(0) Route 2i-1 may not be circular. In this case, when loading the work 26, it is necessary to also attach the hanger 25.

[Brief explanation of the drawing]

Figure 1 is a schematic plan view of an automatic electrodeposition coating processing apparatus according to the present invention, and Figures 2 and 8 are cross-sectional views of Figure 2 and ■-■.
The detailed cross-sectional view, FIG. 4, is a view taken in the direction of the ■ arrow in FIG. 2...
・Transport route, 4a, 4b, 4c...Electrodeposition paint tank (electrodeposition tank), 21...Rail, 24...Claw, 26...Workpiece, 80...Feeding device, 70・...Delivery device patent applicant Uemura Kogyo Co., Ltd.

Claims (1)

[Claims] In an automatic electrodeposition coating processing system that is equipped with a multi-feed type workpiece transport mechanism in which workpieces are transported on horizontal rails at a constant pitch, the workpieces are transported one after another between each processing process. electrodeposition tanks are arranged in a line along the conveyance route, and a feeding device transports the workpiece from the previous process position along the rail at a predetermined electrodeposition tank pressure, and a feed device transports the workpiece from the electrodeposition tank to the next process position. and a delivery device for conveying along the rail.