JP2721006B2 - Electrocoating equipment for electrical equipment cases - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrodeposition coating apparatus used for coating a case of electric equipment such as a transformer and a switch.

[Prior art] In the electrodeposition coating method, a pre-treatment step of subjecting an object to be subjected to a surface treatment such as degreasing or chemical conversion treatment, and an object to be coated and electrodeposited while the object is placed in an electrodeposition tank and transported. An electrodeposition step of forming a coating film by applying a DC voltage between the tank and a post-treatment step of washing and drying the object on which the coating film is formed is sequentially performed.

When applying an electrodeposition coating to a bottomed electrical equipment case having an open end, it is necessary to prevent the accumulation of air or paint in the case when the electrical equipment case is immersed in the electrodeposition tank. When the air pool is generated, the coating cannot be formed because the paint does not enter into the air pool. Further, when the paint pool is generated, a good coating film having a uniform film thickness cannot be formed. The air accumulation and the paint accumulation are particularly likely to occur when an electrodeposition coating is applied to an electric equipment case having a complicated shape, such as a transformer case having a radiation fin.

Further, in order to immerse the bottomed electrical equipment case in the paint in the electrodeposition tank, it is necessary to prevent the case from floating when entering the tank.

In order to cope with the above-mentioned problem, in the method disclosed in Japanese Patent Application Laid-Open No. 61-210200, one chain conveyor is arranged above the electrodeposition tank, and the conveying direction of this conveyor (the The two ends of the electrical device case are held and suspended by two hangers provided at intervals in the longitudinal direction), and the guide rails of the conveyor are moved so that the two hangers are moved along a vertically curved locus. By forming the case, the height position of both ends of the case is changed so that the case is swung in the process of conveyance.

As described above, when the case is hung by the two hangers provided at intervals in the transport direction of the chain conveyor, and the electrical device case is transported in a state of being directed in the transport direction, the electrical process is performed in the transport process. The equipment case occupies a lot of space in the transport direction. Therefore, in order to secure the time required for electrodeposition in the electrodeposition step, the length of the electrodeposition tank needs to be considerably long, and there has been a problem that a large installation area of the apparatus is required.

In addition, when the electric device case is swung in the transport direction as described above, the number of electric device cases that can be immersed per unit length of the electrodeposition tank cannot be increased so much that the coating operation is not performed. Inefficiency was inevitable.

Furthermore, when the electrical equipment case is transported in the transport direction, the bottom of the case is directed forward in the advancing direction because the paint is discharged from the case when the case is lifted from the electrodeposition tank after the electrodeposition step. Need to be kept. Therefore, when the case enters the paint, the case may hit the liquid surface of the paint and attempt to float, and it may take time to sink the case into the paint.

Also, when the electrical device case is transported in the transport direction as described above, if the inclination angle of the electrical device case during transport is too tight, excessive force is applied to the conveyor, making it difficult to perform smooth transport. Become. Therefore, the rocking in the electrodeposition tank could not be sufficiently performed, and the air pool and the paint pool could not be completely eliminated.

Then, the present inventor first, in order to solve the above problem,
An electrodeposition coating method in which the case is swung by changing the height of the bottom side and the height of the opening side of the case while transporting the electric device case in a state of being oriented in the width direction of the electrodeposition tank. Suggested.

In carrying out this method, for example, as shown in FIG. 6, first and second guide rails R1 and R2 arranged at a distance in the width direction of the electrodeposition bath, and these guide rails First and second conveyors are respectively provided with first and second carriages C1 and C2 that are guided and run. Then, the first and second carriages respectively
Then, the second hangers H1 and H2 are attached, and the bottom end of the electric equipment case K is coupled to the lower end of the first hanger H1. A hook F is attached to the lower end of the second hanger H2, and the hook F is hung from the inside of the opening of the electric device case K, thereby suspending the electric device case K as illustrated. In FIG. 6, P indicates the paint in the electrodeposition tank.

The first and second guide rails R1 and R2 are curved so that their respective heights change along the length direction of the electrodeposition tank. The height position of the lower end portions of the first and second hangers is changed by the height difference, and the electric device case is swung.

FIG. 7 shows a state in which the axis of the electric equipment case is oriented substantially horizontally in the electrodeposition bath. In such a position where the state occurs, the first guide rail R1 is connected to the second guide rail R2. Is lower than.

When pulling up the electrical equipment case K from the electrodeposition tank, the end on the bottom side of the electrical equipment case is lifted to a position higher than the end on the opening side. This is the second hanger
H2 is automatically removed from the electrical equipment case K, and the electrical equipment case K is suspended upside down.

[Problems to be Solved by the Invention] As described above, when the case K is hung with the hook F provided at the lower end of the second hanger H2 hooked on the opening of the electrical equipment case K, As shown in FIG. 8, if the upper end of the second hanger H2 is located outside the opening end of the electrical equipment case, the hook F may escape during the transportation and may come off the electrical equipment case. In order to prevent the hook F from being detached from the electrical equipment case during the transportation, the upper end of the second hanger should be positioned inside the open end of the electrical equipment case as shown in FIG. 6 or FIG. It needs to be located.

However, when the upper end position of the second hanger H2 is located inside the opening end of the electrical equipment case, the second hanger H2 is inclined, so that the ninth hanger H2 is inclined.
As shown in the figure, the guide roller G provided on the second carriage C2 comes into contact with the guide rail R2 while being inclined. If such a state continues, the guide roller G
Results in uneven wear, and the life of the guide roller is shortened.

The first and second guide rails R1 and R2 are usually provided in a fixed state, and the distance between the two guide rails cannot be changed. In order to paint the electrical equipment case, it is necessary to make it possible to appropriately change the upper end position of the second hanger according to the dimensions of the electrical equipment case.

Furthermore, in order to paint various electrical equipment cases having different diameters, it is necessary to adjust the length of the second hanger.

One object of the present invention is to prevent uneven wear of a guide roller of a conveyor that conveys an electric device case, and to easily change a position of a hanger on a side where a hook is provided according to a size of the electric device case. An electrodeposition coating apparatus is provided.

Another object of the present invention is to provide an electrodeposition coating apparatus capable of appropriately adjusting the length of a hanger according to a radial dimension of an electric equipment case.

[Means for Solving the Problems] The present invention provides an electrodeposition tank having a predetermined length, and a bottomed electric equipment case having an open end, which is an object to be coated. A transport device for transporting along
The present invention relates to an electrodeposition coating apparatus for an electric equipment case, comprising a voltage applying means for applying a voltage between the electric equipment case and the electrodeposition tank.

In the first invention of the present application, the transfer device includes first and second guide rails extending in the length direction of the electrodeposition tank, and first and second carriages respectively guided and moved by the guide rails. And first and second hangers attached to the first and second carriages, respectively.

The first and second guide rails are disposed above the electrodeposition tank at a predetermined distance in the width direction of the electrodeposition tank, and the height of each part is set along the longitudinal direction of the electrodeposition tank. Is changed so that the angle varies.

The first hanger is suspended from the first carriage and has a lower end coupled to a bottom end of the electrical equipment case.

The second hanger is suspended from the second carriage and has a hook at a lower end thereof, and the hook is hooked from the inside to the opening of the electric equipment case.

The second guide rail includes a main rail and a pair of auxiliary rails extending in the vicinity of the main rail in parallel with the main rail. The second carriage has a main guide roller that is held by the main rail and rolls. A pair of auxiliary guide rollers for rolling on the pair of auxiliary rails, a pair of side rollers for respectively contacting the pair of auxiliary rails from different sides in the horizontal direction to prevent the inclination of the second conveyor, A plurality of hanger retaining grooves are provided at predetermined intervals in the width direction of the tank.

At the upper end of the second hanger is provided a latching portion which is latched in one of the hanger retaining grooves of the second conveyor.

Further, in the second invention of the present application, the second hanger has a rod-shaped hanger main portion having a latching portion at an upper end, a chain having an upper end connected to a lower end of the hanger main portion, and a hook attached to a lower end, It has a hook connected to the chain and a plurality of hook engaging portions provided at positions where the heights of the hanger main portions are different from each other and formed so that the hook can be hooked.

[Operation] As in the first aspect, the second guide rail of the second conveyor is constituted by a main rail and a pair of auxiliary rails extending in the vicinity of the main rail in parallel with the main rail. A main guide roller that rolls while being held by the rails, a pair of auxiliary guide rollers that roll on the pair of auxiliary rails, and a second conveyor that contacts the pair of auxiliary rails from different sides in the horizontal direction. When the pair of side rollers for preventing the inclination is provided on the second carriage, the guide roller does not tilt, so that uneven wear of the guide roller can be eliminated and the life can be extended.

Further, as described above, when a plurality of hanger retaining grooves are provided in the second carriage, and the retaining portion at the upper end of the second hanger is retained in any one of the hanger retaining grooves, the electrical equipment case The position of the upper end of the second hanger can be easily changed according to the axial dimension of the second hanger.

Further, when configured as in the second aspect of the invention, the length of the second hanger can be adjusted by appropriately selecting a hook engaging portion for hooking the hook, and the second hanger can be variously mounted. It can be commonly used for electrical equipment cases of dimensions.

Embodiment An embodiment of the present invention will be described below with reference to the accompanying drawings.

First, an overall configuration of the electrodeposition coating apparatus of the present embodiment will be described with reference to FIGS. FIG. 3 is a structural view of a portion near an electrodeposition tank of the electrodeposition coating apparatus as viewed from the side, and FIG. 4 is a view of the posture of each electric equipment case shown in FIG. 3 viewed from the right in FIG. FIG. 5 is a top view of FIG.

In these figures, reference numeral 1 denotes an electrodeposition tank having a predetermined length, and the bottom of the electrodeposition tank 1 has a first inclined portion 1a inclined downward from one end thereof to the other end thereof; A first flat portion 1b continuous with the lower end of the inclined portion, a second inclined portion 1c inclined upward from the other end of the first flat portion,
A second flat portion 1d having one end continuous with the upper end of the second flat portion, a third tilt portion 1e tilted obliquely downward from the other end of the second flat portion 1d, and a third flat portion 1e. It is composed of a third flat portion 1f continuous with the lower end. A water-soluble paint 2 is contained in the electrodeposition tank 1.

Reference numeral 3 denotes a first conveyor (main conveyor) arranged at a position higher than the electrodeposition tank 1, and this conveyor has a first guide rail 3A and a large number of rollers provided with rollers that are guided and moved by the guide rail. It is composed of a known chain conveyor having one carriage 3B and a chain (not shown) provided to connect the carriages 3B.

The first conveyor is located at a position higher than the electrodeposition tank 1 and moves from a region (not shown) for performing a pretreatment process such as degreasing and water washing to a region (not shown) for performing a cleaning process through a region for performing an electrodeposition process. And both ends thereof are connected so as to form a closed loop as a whole.

Reference numeral 4 denotes a second conveyor (sub-conveyor), which has a structure in which a large number of second carriages 4B (see FIG. 2) which are guided and moved by a second guide rail 4A are connected by a chain. And a chain conveyor having This second conveyor is arranged only in the illustrated area where the electrodeposition process is performed.

The second conveyor 4 is located at a position higher than the electrodeposition tank 1 and, as shown in FIG. And return section 4r
The first conveyor 3 and the conveyor 4g of the second conveyor 4 are arranged at predetermined intervals in the width direction of the electrodeposition tank 1.

A synchronizing device 5 for synchronizing the two conveyors is provided between the first conveyor 3 and the second conveyor 4, whereby the second conveyor 4 is driven to move at the same speed as the first conveyor. Is done.

First carriage provided on first conveyor 3
A transfer hanger 7 is attached to 3B via a primary hanger 6, and a secondary hanger 8 is attached to a lower end of the transfer hanger 7. The secondary hanger 8 is composed of two chains, and the lower end of the secondary hanger is connected to the bottom end 9a of the electric device case 9 as an object to be coated by appropriate means. In the state where the electric device case 9 is held by only the secondary hanger 8 in this way, as shown in the right end of FIG. 3, the electric device case has its opening-side end downward. It will be suspended in the state. In this example, the primary hanger 6, the transfer hanger 7, and the secondary hanger 8
Thus, the first hanger H1 is configured.

In this example, as shown in FIG. 4, a large number of radiating fins 9A are provided on the side wall of the electric device case 9,
In FIG. 3, the illustration of the radiation fin is omitted.

As shown in FIGS. 1 and 2, the guide rail 4A of the second conveyor 4 is opposed to the main rail 4a having an I-shaped cross section having projecting portions 4a1 and 4a2 at the top and bottom in the width direction of the electrodeposition tank. A pair of auxiliary rails 4b and 4c each having a U-shaped cross section extend in the vicinity of the main rail in parallel with the main rail in this state. The main rail 4a and the auxiliary rails 4b and 4c are arranged such that their centers are located at the tops of isosceles triangles.
Reference numerals 4b and 4c are fixed to both ends of an inverted U-shaped rail reinforcing bracket 10 having a central portion fixed to the main rail 4a.

A boss 11 is welded to the center of the second carriage 4B, and a rod 13 is attached to the upper end of a bolt 12 penetrating the boss 11.
A trolley 14 is connected via the trolley, and guide rollers 15, 15 are attached to the trolley. A stopper 16 is fixed to an upper end of the bolt 12, and an annular support member 17 is fitted to a portion of the bolt protruding downward from the boss 11.
A nut 18 is screwed to the lower end of the bolt 12, and the nut 18 serves to position the support bracket 17 and prevent the bracket 17 from coming off. The guide rollers 15, 15 are arranged with the main rail 4a interposed therebetween, and are in contact with the rail surface on the lower protrusion 4a2 of the main rail. A chain (not shown) is connected to the trolley 14, and when the trolley 14 is driven by the chain, the guide rollers 15, 15 roll on the rail surface of the main rail.

At both ends of the carriage 4B, auxiliary guide rollers 20 and 21 that rotate around an axis extending in the horizontal direction are attached, and these auxiliary guide rollers are inserted into a pair of auxiliary rails 4b and 4c having a U-shaped cross section, respectively. I have. The wall portions projecting horizontally from the lower ends of the auxiliary rails 4b, 4c are roller holding portions 4b1, 4c1, respectively, and the auxiliary guide rollers 20, 21 are in contact with these roller holding portions.

At both ends of the carriage 4B, a pair of side rollers 22 and 23, which still rotate around a vertical axis, are attached, and these side rollers contact the end portions of the roller holding portions 4b1 and 4c1 of the auxiliary rails 4b and 4c, respectively. Touched.

When the auxiliary guide rollers 20, 21 and the side rollers 22, 23 are provided in the carriage 4B in this manner, the load applied to the carriage 4B is received by the auxiliary rails 4b, 4c via the auxiliary guide rollers 20, 21.

In addition, since the side rollers 22, 23 abut against the auxiliary rails 4b, 4c, the carriage 4B is prevented from tilting.
Uneven wear of each guide roller is prevented.

The carriage 4B is also provided with a window 25 extending long in the width direction of the electrodeposition tank, and a plurality of hanger hooks arranged at predetermined intervals in the width direction of the electrodeposition tank at the lower edge of the window. Stop grooves V1 to V7 are provided. In FIG. 4, this hanger retaining groove is indicated by a + mark.

As shown in FIG. 1, the second hanger H2 includes a rod-shaped hanger main portion 30, a chain 31 having an upper end connected to a lower end of the hanger main portion 30, and a hook 32 attached to a lower end of the chain 31. ,
Hook 33 connected in the middle of chain 31 and hanger main part 30
Brackets are provided at different heights
And a plurality of hook engaging portions 34 formed so that the hook 33 can be hooked. The hanger main portion 30 has a latch portion 30a at the upper end thereof, and is attached to the carriage 4B by latching the latch portion 30a in any of the hanger latch grooves V1 to V7.

As described above, the carriage 4B is provided with a plurality of hanger locking grooves arranged in the width direction of the electrodeposition tank, and the second hanger is provided with a locking portion 30a at the upper end thereof, and the locking portion is connected to any of the hanger locking portions. If the second hanger is hooked on the retaining groove, the position of the upper end of the second hanger can be easily changed according to the size of the electrical equipment case.

As described above, a chain is attached to the lower end of the second hanger, and a hook connected in the middle of the chain can be hooked on a hook engaging portion provided on the hanger main part.
The length of the second hanger can be adjusted to an appropriate length according to the dimensions of the electrical equipment case, and the second hanger can be shared by various electrical equipment cases.

The second hanger H2 corresponds to each first hanger H1 of the first conveyor in the electrodeposition step in a one-to-one correspondence, and the corresponding first and second hangers H2 (secondary hanger 8).
And the hook 32 are provided so as to face each other in the width direction of the electrodeposition tank 1).

Although not shown, a brush (current collector) is attached to the primary hanger 6 attached to the first conveyor, and when the primary hanger passes above the electrodeposition tank 1, the electrodeposition tank The brush comes into sliding contact with the power supply rail disposed along the area where the brushless motor 1 is provided.
In the case of cation electrodeposition, the power supply rail is connected to the negative terminal of the DC power supply, and power is supplied from the power supply rail to the primary hanger 6 through a brush. Power is supplied to the electrical equipment case through the secondary hanger 8. In the case of cation electrodeposition, an electrode plate (not shown) connected to the positive output terminal of the DC power supply is provided in the electrodeposition bath 1.

In the case of anion electrodeposition, the power supply rail is connected to the positive output terminal of the DC power supply, and the electrode plate disposed in the electrodeposition tank is connected to the negative output terminal of the DC power supply.

The guide rails 3A of the first conveyor 3 and the guide rails 4A of the second conveyor 4 are curved so as to appropriately generate a height difference between the first and second hangers in each part of the area where the electrodeposition process is performed. Have been. In this embodiment, as shown in FIG. 1, the guide rail 3A of the first conveyor 3 is curved so as to be substantially along the inclined portion 1a, the flat portion 1b, and the inclined portion 1c at the bottom of the electrodeposition tank 1. , By this first conveyor,
An end on the bottom side of the electrical equipment case is transported substantially along the bottom of the electrodeposition tank 1.

Further, the guide rail 4A of the second conveyor 4 extends at a position higher than the guide rail 3A substantially along the guide rail 3A in a region corresponding to the inclined portion 1a and the flat portion 1b at the bottom of the electrodeposition bath, In a region corresponding to a portion behind the inclined portion 1c at the bottom of the tank, a position lower than the guide rail 3A is provided so as to extend substantially along the guide rail 3A. While the electric device case 9 is being conveyed in the electrodeposition tank, the position of the opening side end of the electric device case 9 is changed up and down by the second conveyor 4.

In performing the electrodeposition coating of the electrical equipment case 9 using the above-described apparatus, first, a pretreatment step of performing a surface treatment such as degreasing and chemical conversion treatment on the surface of the electrical equipment case is performed. In the pre-treatment step, the end of the bottom of the electrical equipment case 9 is held by the secondary hanger (first hanger) 8 provided on the first conveyor 3 to bring the electrical equipment case into a state of being suspended upside down. In this state, each process is sequentially performed while transporting the electrical equipment case. After the chemical conversion treatment, the electrical equipment case is washed and drained.

The end of the electrical equipment case 9, which has been suspended upside down, on the opening side, where the electrical equipment case having completed the pretreatment step has been transported by the first conveyor 3 to a position before the electrodeposition tank 1. The hook 32 at the lower end of the second hanger is hooked on the first and second conveyors, with the electrical equipment case 9 oriented in the width direction of the electrodeposition bath as shown on the left end of FIG. Hang from 3 and 4. The latch at the upper end of the second hanger is hooked on any of the hanger latch grooves of the carriage of the second conveyor. In this case, as the radial dimension and axial dimension of the electrical equipment case increase, As the groove used for hooking the latching portion of the second conveyor, a latching groove remote from the first conveyor is used. Now, assuming that the first conveyor is on the left side in FIG. 2, when the radial dimension and the axial dimension of the electrical equipment case are the smallest, the first conveyor is formed as a groove for hooking the latching portion of the second hanger. Grooves with larger numbers are used as the radial and axial dimensions of the electrical equipment case increase using the close latch groove V1.
V2, V3, ... should be used.

If necessary, a hook 33 connected to the chain 31 of the second hanger is hooked on one of the hook engaging portions 34 according to the dimensions of the electrical equipment case, and the length of the second hanger is reduced. Adjust it.

In the electrodeposition step, the posture of each electric equipment case 9 is changed as follows according to the height difference between the guide rails of the first and second conveyors 3 and 4. Before the electric device case is immersed in the paint in the electrodeposition tank, the opening of the electric device case is obliquely directed downward as shown on the left end of FIG. In this state, the electric equipment case is made to enter the paint, and as the electric equipment case is made to enter the paint, the position of the end on the opening side is raised with respect to the end on the bottom side, and the case is half immersed in the paint. Make it almost horizontal. After the electrical equipment case is completely immersed in the paint, the end on the opening side is pulled up, the opening is turned obliquely upward, and the air in the case is released (the sixth case from the left in FIG. 4). See). Thereafter, the bottom end of the case 9 is pulled up, and when the case is pulled up from the electrodeposition bath, the hook 32 of the second hanger is automatically removed from the end on the opening side (right in FIG. 4). From the second case), the electrical equipment case is suspended upside down. When the electric equipment case is suspended upside down at the end of the electrodeposition step, excess paint can be easily removed from the electric equipment case.

The case 9 carried out of the electrodeposition tank is sent to the next post-processing step while being suspended upside down to wash and dry the painted electric device case. When the post-processing step is performed in a state where the electric device case is suspended upside down, drainage can be easily performed.

In the above embodiment, the side rollers 22 and 23 are
Although the side rollers b and 4c are abutted from the inside, the side rollers need only be in contact with the auxiliary rail from different sides in the horizontal direction, and are not limited to the above example. For example, in the above-described embodiment, the lower ends of the auxiliary rails 22 and 23 are provided so as to protrude further below the lower end of the reinforcing bracket 10 so that the side rollers 22 and 23 abut against the auxiliary rails 4b and 4c from outside. Is also good.

[Effects of the Invention] As described above, according to the present invention, the guide rail of the second conveyor is constituted by the main rail and the pair of auxiliary rails extending near the main rail in parallel with the main rail. A main guide roller that rolls while being held by the rails, a pair of auxiliary guide rollers that roll on the pair of auxiliary rails, and a second conveyor that contacts the pair of auxiliary rails from different sides in the horizontal direction. Since the pair of side rollers for preventing the inclination are provided on the second carriage, there is an advantage that the guide roller is prevented from being inclined, the uneven wear of the guide roller is eliminated, and the life can be extended.

Further, in the present invention, a plurality of hanger retaining grooves are provided on the second carriage, and the retaining portion at the upper end of the second hanger is retained by any of the hanger retaining grooves. The upper end position of the second hanger can be easily changed according to the axial dimension of
Even when the dimensions of the electrical equipment case are changed, it is possible to properly suspend the electrical equipment case.

According to the second aspect of the present invention, the length of the second hanger can also be adjusted by appropriately selecting the hook engaging portion for hooking the hook. It can be commonly used for electrical equipment cases of various dimensions, and cost reduction can be achieved.

[Brief description of the drawings]

FIG. 1 is a front view showing an essential part of an embodiment of the present invention, FIG. 2 is an enlarged front view showing a carriage portion of the embodiment of FIG. 1, and FIG. FIG. 4 is a configuration diagram showing the configuration in the vicinity of the tank, FIG. 4 is an explanatory diagram showing the posture of each electric equipment case shown in FIG. 3 viewed from the right side of FIG. 3, and FIG. FIGS. 6 and 7 show the top view of the main part of the electrodeposition coating apparatus shown in FIGS. 6 and 7, respectively. FIG. 8 is an explanatory view showing a state in which the electric equipment case is suspended in a horizontal position, and a state where the electric equipment case is immersed in the paint in the electrodeposition tank. FIG. 8 is an explanatory view showing an undesired hanging state of the electric equipment case. FIG. 9 is an enlarged sectional view of a portion A in FIG. 1 ... Electrodeposition tank, 2 ... Paint, 3 ... First conveyor, 3A
... 1st guide rail, 4 ... 2nd conveyor, 4A ...
… Second guide rail, 6… Primary hanger, 7… Transfer hanger, 8… Secondary hanger, 9 …… Electrical equipment case, 4B …… Carriage, 4a …… Main rail, 4b, 4c… ... Auxiliary rail, H1 ... First hanger, H2 ... Second hanger, V1 to V7 ... Hanger retaining groove, 33 ... Hanging bracket.

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Yukimitsu Yamamoto 2-1-1-11 Tagawa, Yodogawa-ku, Osaka-shi, Japan Daihen Co., Ltd. (72) Inventor Shigeaki Furukawa 1-18-18 Ohamacho, Amagasaki-shi, Hyogo No.Kyo Hanshin Paint Co., Ltd.

Claims (2)

(57) [Claims] 1. A transfer device for transporting an electrical equipment case along a longitudinal direction of the electrodeposition tank, using an electrodeposition tank having a predetermined length and a bottomed electrical equipment case having an open end as an object to be coated. And an electrodeposition coating apparatus for an electric equipment case, comprising: a voltage application unit that applies a voltage between the electric equipment case and the electrodeposition tank. First and second guide rails that are arranged above the electrodeposition tank at a distance and are curved so that the height of each part changes along the longitudinal direction of the electrodeposition tank; First and second carriages respectively guided and moved by first and second guide rails; and a second carriage suspended from the first carriage and having a lower end coupled to a bottom end of the electrical equipment case. From the first hanger and the second carriage A second hanger that is lowered and has a hook at a lower end, the hook being hooked from the inside to an opening of the electrical equipment case, wherein the second guide rail is a main rail and a vicinity of the main rail. A pair of auxiliary rails extending in parallel with the main rail, wherein the second carriage is a main guide roller that is held by the main rail and rolls, and a pair that rolls on the pair of auxiliary rails, respectively. An auxiliary guide roller, a pair of side rollers that respectively contact the pair of auxiliary rails from different sides in the horizontal direction to prevent the inclination of the second conveyor, and a predetermined interval in the width direction of the electrodeposition tank. A plurality of hanger retaining grooves provided in a gap, and an upper end of the second hanger is provided with a retaining portion which is retained by any of the hanger retaining grooves of the second conveyor. An electrodeposition coating apparatus for an electrical equipment case. 2. The second hanger comprises: a bar-shaped hanger main portion having the latch portion at an upper end; a chain having an upper end connected to a lower end of the hanger main portion, and a lower end having the hook attached thereto; A latch connected to the chain; and a plurality of latch engaging portions provided at positions where the height of the hanger main portion is different from each other and formed so that the latch can be hooked. The electrodeposition coating apparatus for an electrical equipment case according to claim 1.