JPH0616925Y2 - Floating iron powder removal device in electrodeposition tank - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a device for removing floating iron powder in an electrodeposition tank.

(Prior Art) The conventional electrodeposition tank will be described with reference to FIG. 4. (01) is the main tank (overflow tank) of the electrodeposition tank, and (02) is the porous tank installed in the lower part of the main tank (01). Bottom plate, (03) is a sub-tank communicating with the main tank (01), (04) is a circulation pump connected to the lower part of the sub-tank (03) via a conduit, (0
5) is a filter connected to the circulation pump (04) via a conduit, (06) is a conduit extending from the filter (05) to the bottom of the main tank (01), (07) is a vehicle body, (08) Is a vehicle body transport line that transports the same vehicle body (07) into the main tank (01), and the diluted water-soluble paint (09) neutralized with acid is used in the main tank (0
Inside 1) → Inside sub tank (03) → Circulating pump (04) → Filter (0
5) → Conduit (06) → Circulates in the main tank (01) while transporting the car body (07) through the car body transfer line (08) and dipping it in the diluted water-soluble paint (09) in the main tank (01) Then, I try to electrodeposit.

(Problems to be solved by the device) In the conventional electrodeposition tank shown in FIG. 4, (I) the vehicle body (07) heading to the main tank (01) is washed and attached to the vehicle body (07). The iron powder that is present is washed off, but at that time, the iron powder that adheres to the panel joints and the inner panel of the vehicle body (07) is hard to fall off and enters the main tank (01) together with the vehicle body (07). . At this time, part of the iron powder separates from the vehicle body (07) and floats in the diluted water-soluble paint (09) to settle, resulting in a porous bottom plate.
It deposits on the (02) and hinders the circulation of the diluted water-soluble paint (09). (II) or the car body (07) proceeds in the diluted water-soluble paint (09) with the remaining iron powder attached. In addition, there was a problem that iron powder that settled while floating in the diluted water-soluble paint (09) redeposited on the vehicle body (07), resulting in defective painting.

(Means for Solving Problems) The present invention addresses the above problems, and is configured by arranging a plurality of magnets in series in the axial direction and facing the same magnetic pole via a spacer made of a non-magnetic material. It is characterized in that it is equipped with a rod-shaped magnet assembly and a non-magnetic material-made cylindrical case that incorporates the magnet assembly and is installed in the electrodeposition tank.

The object of the present invention is to efficiently remove iron powder adhering to an object to be coated such as a vehicle body and entering the tank. The filter replacement cycle can be extended. Furthermore, it is to be used for the floating iron powder removal device in the improved electrodeposition tank that can eliminate coating defects.

(Operation) The floating iron powder removing device in the electrodeposition tank of the present invention is configured as described above, and the diluted water-soluble paint is circulated in the electrodeposition tank → circulation pump → filter → electrodeposition tank while An object to be coated such as a car body is conveyed by a conveying device and immersed in a diluted water-soluble paint in the electrodeposition tank to perform electrodeposition coating. At this time, a cylindrical case made of a non-magnetic material is placed in the electrodeposition tank. The magnet assembly is installed in the same non-magnetic material cylindrical case, that is, a plurality of magnets are arranged in series in the axial direction and the same magnetic poles are arranged through a non-magnetic material spacer. The rod-shaped magnet assembly constructed so as to face each other is inserted, and the magnetic lines of force are generated for each magnet, and the entire peripheral surface of the cylindrical case made of non-magnetic material becomes the adhesion area of iron powder. Most of the iron powder that adheres to the object to be coated and enters the tank adheres to the outer peripheral surface of the cylindrical case made of the same non-magnetic material. However, it is efficiently removed from the object to be coated and the diluted water-soluble paint and does not float or settle in the diluted water-soluble paint.

(Embodiment) Next, the floating iron powder removing device in the electrodeposition tank of the present invention is first, second,
Explaining one embodiment shown in FIG. 3, (1) in FIG. 1 is a main tank (overflow tank) of the electrodeposition tank, (2) is a perforated bottom plate disposed in the lower part of the main tank (1), (3) a sub-tank communicating with the main tank (1), (4) a circulation pump connected to the lower part of the sub-tank (3) via a conduit,
(5) is a filter connected to the circulation pump (4) via a conduit, (6) is a conduit extending from the filter (5) to the bottom of the main tank (1), (7) is a vehicle body, (8) ) Transports the vehicle body (7) into the main tank (1), the vehicle body transport line,
In the figure, (10) and (10) are cylindrical cases made of non-magnetic material, and (11) and (12) are caps that close the upper and lower openings of the cylindrical case made of non-magnetic material (10). Cap (11) (12) same as the case (10)
And are made of vinyl chloride. Also in FIG.
(13) is a plurality of permanent magnets, the permanent magnets (13) are arranged in series in the axial direction, and the same magnetic poles face each other via a spacer (14) made of a non-magnetic material to form a rod-shaped magnet assembly. The same magnet assembly is installed in each non-magnetic cylindrical case (10).
The cylindrical case (10) made of the non-magnetic material is inserted into the main tank (1) near the vehicle body tank and is immersed in the diluted water-soluble paint (9).

Next, the operation of the floating iron powder removing device in the electrodeposition tank shown in FIGS. The diluted water-soluble paint neutralized with acid (9) in the main tank (1) → sub tank (3)
Inside → Circulation pump (4) → Filter (5) → Conduit (6) → Circulates in the main tank (1) while moving the vehicle body (7) to the vehicle body transportation line
Diluted water-soluble paint in the main tank (1) transported by (8)
It is dipped in (9) and electro-deposition coating is performed. At this time, each non-magnetic material cylindrical case is near the vehicle body tank of the main tank (1).
(10) is attached and immersed in diluted water-soluble paint (9),
In the same non-magnetic cylindrical case (10), the magnet assembly (1
5) That is, a rod-shaped magnet assembly (15) having a plurality of permanent magnets (13) arranged in series in the axial direction and having the same magnetic poles facing each other through a spacer (14) made of a non-magnetic material is inserted. The lines of magnetic force are generated in each permanent magnet (13), and the entire peripheral surface of each cylindrical case (10) made of non-magnetic material becomes an adhesion area of iron powder, and the panel joining of the vehicle body (7) is performed. Iron powder adhering to the inner part and inner panel adheres to the outer peripheral surface of the cylindrical case (10) made of each non-magnetic material and is removed from the vehicle body (7) and diluted water-soluble paint (9), Does not float or settle in diluted water-soluble paint (9).

(Effect of the Invention) As described above, the floating iron powder removing device in the electrodeposition tank of the present invention circulates the diluted water-soluble paint in the electrodeposition tank → circulation pump → filter → electrodeposition tank while When an object to be coated is transferred by a transfer device and immersed in diluted water-soluble paint in the electrodeposition tank to perform electrodeposition coating, a cylindrical case made of non-magnetic material is attached to the inside of the electrodeposition tank. Magnet assembly in a cylindrical case,
That is, a rod-shaped magnet assembly, in which a plurality of magnets are arranged in series in the axial direction and the same magnetic poles are opposed to each other via a spacer made of a non-magnetic material, is inserted, and magnetic force lines are generated for each magnet. Since the entire peripheral surface of the cylindrical case made of non-magnetic material serves as the iron powder adhesion area, the iron powder adhering to the object to be coated such as the vehicle body and entering the tank can be efficiently removed. Further, as described above, the iron powder adhering to the object to be coated such as the vehicle body and entering the tank can be efficiently removed, and it does not float or settle in the diluted water-soluble paint.
This has the effect of prolonging the filter replacement cycle and eliminating paint defects.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing an embodiment of a device for removing floating iron powder in an electrodeposition tank according to the present invention, FIG. 2 is an enlarged side view of a cylindrical case made of a non-magnetic material, and FIG. 3 is a magnet assembly. Fig. 4 is an enlarged side view of Fig. 4, and Fig. 4 is a vertical side view showing a conventional electrodeposition tank. (1) …… Electrodeposition tank, (10) …… Cylinder case made of non-magnetic material, (13)
…… Magnet, (14) …… Non-magnetic material spacer, (15) …… Magnet assembly.

Claims (1)

[Scope of utility model registration request] 1. A rod-shaped magnet assembly in which a plurality of magnets are arranged in series in the axial direction and the same magnetic poles face each other through a spacer made of a non-magnetic material, and the same magnet assembly is built in an electrodeposition tank. An apparatus for removing floating iron powder in an electrodeposition tank, comprising: