JPH04317767A - Apparatus for washing hanger for dip coating - Google Patents

Abstract

PURPOSE:To change the direction of fluid resistance to a hanger and to partially increase the moving speed of the hanger by constituting the title apparatus so as to allow the hanger to meander in a washing tank, in order to enhance the washing effect on the hanger. CONSTITUTION:Posts 19, 27 are respectively erected in first and second washing tanks 17, 25 in order to make the locus of the hangers 9 protruding from the track of a trolley conveyor 1 and contact rods 21, 29 protruding in an oblique forward direction to cross the passage of the hangers 9 are fixed to the posts 19, 27.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hanger cleaning apparatus for dip coating, which is equipped with a hanger cleaning tank that moves endlessly to perform dip coating.

0002

2. Description of the Related Art A coating mechanism as shown in FIG. 7 is used for dip coating in which rust preventive paint is applied to objects to be coated, such as castings.

This coating mechanism has a hanger B suspended from a trolley conveyor A, and the object C to be coated is placed on the hanger.
It is hooked up at B and immersed in the coating tank D. Figure 8
As schematically shown in , the trolley conveyor A is configured in a ring shape so that the hanger B moves endlessly, and the trolley conveyor A is arranged in a ring shape so that the hanger B moves endlessly, and the trolley conveyor A is arranged in a ring shape so that the hanger B moves endlessly, and the trolley conveyor A is placed in a loading zone E for the objects C to be coated with a coating tank D in between. and unloading zone F are located, and this unloading zone F and coating tank D are located.
A drying zone G is located between the two.

[0004] By the way, paint remains on the upper surface (hanging part) of the hanger B and adheres as paint scum. If the next painting process is performed with this paint scum attached, the paint may not adhere sufficiently to the C surface of the object to be painted that comes into contact with or approaches this paint scum, or the adhering paint scum may peel off and be painted. It adheres to the object C surface as a paint puddle. Therefore, correction painting is required after the painting process is completed. Therefore, the paint residue is removed manually before the start of the painting process, but the work efficiency is poor. Furthermore, a method of spraying high-pressure water is also used, as described as a conventional technique in, for example, Japanese Patent Laid-Open No. 62-38273, but this requires a complicated device.

[0005] Therefore, unloading zone F and loading zone E
Cleaning equipment in which a cleaning tank is placed between the two is widely used.

[0006]

[Problems to be Solved by the Invention] However, due to the relationship with the entire coating mechanism, the cleaning tank must be made extremely long or the transport speed of the trolley conveyor A must be increased to allow the hanger B to move at high speed within the cleaning tank. I can't do it like that. Therefore, a sufficient cleaning effect could not be expected.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a cleaning device for dip coating hangers, which is equipped with a cleaning tank and has a sufficient cleaning effect.

[0008]

[Means for Solving the Problems] In order to achieve this object, the present invention provides a hanger that moves endlessly and performs dip coating.
Regarding the apparatus for cleaning hangers for dip coating, which is equipped with a cleaning tank, a means is adopted in which the cleaning tank is provided with a contact member that makes the hanger meander.

[0009] When there are two or more cleaning tanks, it is not necessarily necessary to provide a contact member for every cleaning tank.

0010

[Action] Fluid (cleaning liquid) against the hanger when meandering
The direction of resistance changes. Moreover, the moving speed of the hanger in the fluid increases immediately after it is removed from the contact member.

[0011]

Embodiments Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 6.

FIG. 1 is a front view of a hanger cleaning apparatus for dip coating according to the present invention.

The movable body 3 of the trolley conveyor 1 moves along an annular rail 5. A hook 7 is attached to the movable body 3, and a hanger 9 is suspended from the hook 7. Therefore, the hanger 9 moves endlessly along the rail 5. The hanger 9 is a cast metal 11 that is the object to be painted.
(See Figure 2: Figure 2 is an enlarged front view of the trolley conveyor 1 and hanger 9).
1 is immersed in a coating tank (not shown). At this time, the hanger 9 is also immersed in the coating tank at the same time, so paint adheres to the hanger 9 as paint scum 13, and if the next painting process is performed in this state, the hooking surface 14 of the casting 11 will be coated. A touch-up painting must be applied (see FIG. 3, which is an enlarged side view of the trolley conveyor 1 and hanger 9).

A first cleaning tank 17 having a guide plate 15 is arranged in front of the unloading zone (not shown) of the casting 11, and this first cleaning tank 17 contains a stripping agent. . 1st
A support 19 is erected in the cleaning tank 17, and this support 19
A hit rod (hit member) 21 extending diagonally forward and crossing the path of the hanger 9 is fixed to the hanger 9 .

A second cleaning tank 25 having a guide plate 23 is arranged in front of the first cleaning tank 17, and this second cleaning tank 25 contains thinner. In the second cleaning tank 25, like the first cleaning tank 17, a support 27 and a hit rod (hitting member) 29 are provided.

The contact rods 21 and 29 may be fixed to the side walls of the first and second cleaning tanks 17 and 25, and their heights can be adjusted according to the size of the hanger 9. is preferred.

The portions of the rail 5 corresponding to the first cleaning tank 17 and the second cleaning tank 25 are lowered. Therefore, the hanger 9 that has unloaded the casting 11 in the unloading zone is guided by the guide plate 15 and enters the first cleaning tank 17, and is obstructed by the hit rod 21 in the traveling direction X of the trolley conveyor 1. Since it traces a trajectory that protrudes from the orbit and tries to return to the original trajectory when it comes off the contact rod 21, it moves in a meandering manner in the release agent. At this time, the paint residue 13 is peeled off from the hanger 9. Subsequently, the hanger 9 is guided by the guide plate 23 and enters the second cleaning tank 25, and similarly to the first cleaning tank 11, it moves in a meandering manner through the thinner. At this time, hanger
The minute paint residue 13 still adhering to the hanger 9 is dissolved, and the stripping agent on the hanger 9 is washed away.

FIG. 4 is a plan view of the first cleaning tank 17 and the second cleaning tank 25.

The hanger 9 that has entered the first cleaning tank 17 contacts the hit rod 21 and tilts forward.
1 (meandering start). When removed from the hit rod 21, the hanger 9 tries to return to the vertical state, so the moving speed increases. During these processes, the direction of resistance of the release agent to the hanger 9 changes. The hanger 9 that has entered the second cleaning tank 25 contacts the hit rod 29 and moves in the same manner (see arrow).

FIG. 5 is a plan view showing a case where a draining mechanism is added to the above-described embodiment.

The draining mechanism includes a post 31 erected in front of the first cleaning tank 17, a hanger 33 fixed to the post 31, and extending diagonally forward and across the path of the hanger 9;
Two pillars 35, 35 erected in front of this hanging rod 33
and an impact rod 37 fixed between the pillars 35, 35. Similarly, in front of the second cleaning tank 25,
The pillar 39 and the hanging rod 41, the pillars 43, 43, and the impact rod 4
5 is provided to constitute a draining mechanism.

By employing such a draining mechanism, the hanger 9 that has passed through the first and second cleaning tanks 17, 25 is caught on the hanger rods 33, 41, and then the speed is increased and the hanger 9 is moved to the impact rods 37, 45. The washing liquid and the paint scum 13 with reduced adhesion are removed from the hanger 9 (see FIG. 6; FIG. 6 is a front view showing the operation of the draining mechanism).

Note that the hanging rods 33, 41 and the impact rods 37,
It is preferable that the height of the hanger 45 is adjustable according to the size of the hanger 9.

[0024]

Effects of the Invention As explained above, in the hanger cleaning device for dip coating according to the present invention, the hanger cleaning device in the cleaning tank can be cleaned easily.
A sufficient cleaning effect is achieved by changing the direction of the fluid resistance against the cleaning tank and partly by increasing the speed of movement of the hanger in the cleaning bath.

[Brief explanation of drawings]

FIG. 1 is a front view of a hanger cleaning device for dip coating according to the present invention.

FIG. 2 is an enlarged front view of a trolley conveyor and a hanger.

FIG. 3 is an enlarged side view of the trolley conveyor and hanger.

FIG. 4 is a plan view of a first cleaning tank and a second cleaning tank.

FIG. 5 is a plan view showing a case where a draining mechanism is added.

FIG. 6 is a front view showing the function of the draining mechanism.

FIG. 7 is a partial front view of the painting mechanism.

FIG. 8 is an overall schematic diagram of the coating mechanism.

[Explanation of symbols]

1 Trolley conveyor 9
Hanger 17 First cleaning tank 25 Second cleaning tank 21, 29 Hitting rod (hitting member)

Claims (1)

[Claims] 1. A hanger cleaning device for dip coating which is equipped with a hanger cleaning tank that moves endlessly to perform dip coating, wherein the cleaning tank is provided with a contact member that makes the hanger meander. A cleaning device for hangers for dip coating, characterized by: