JP2564211Y2 - Electrocoating equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an electrodeposition coating apparatus suitable for coating a case of an electric device such as a transformer and a switch.

[Prior art] Electrodeposition coating is 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 an electrodeposition tank while transporting the object in an electrodeposition tank. An electrodeposition step of applying a DC voltage between the electrodes to form a coating film, a washing step of washing the object on which the coating film is formed, and a post-treatment step of drying the washed object. The process is sequentially performed to form a coating film on the object to be coated.

Generally, an electrodeposition coating apparatus is provided with an elongated electrodeposition tank containing a water-soluble paint, a transfer device for transferring an object to be coated along the longitudinal direction of the electrodeposition tank, and the object to be coated and the electrodeposition tank. Voltage applying means for applying a voltage between the electrodes.

The transport device includes a conductive primary hanger transferred along the guide rail, and a conductive secondary hanger having a lower end connected to the object to be coated and an upper end hooked to the primary hanger, The object to be coated is conveyed while being hung on the primary hanger via the secondary hanger.

The voltage applying means includes a current collector attached to the primary hanger and a power supply rail with which the current collector contacts during the movement of the primary hanger along the electrodeposition tank. The power supply rail is connected to the negative terminal of the DC power supply. Is done. The positive terminal of the power supply is connected to an electrode provided in the electrodeposition tank, and a direct current is supplied from a DC power supply through a power supply rail, a current collector, primary and secondary hangers, an object to be coated, and an electrode in the electrodeposition tank. Is shed.

The fine particles of the paint are attracted to the object to be coated by the electric force generated by the application of the direct current, and adhere to the surface of the object to form a coating film.

In the electrodeposition coating apparatus as described above, between the current collector and the primary hanger, between the primary hanger and the secondary hanger, and
Painting cannot be performed unless electrical continuity between the next hanger and the object to be coated is ensured. When the hanger is repeatedly used, paint adheres and accumulates on the hanger, and the area of the current-carrying part decreases. When the amount of the paint accumulated in the hanger becomes large, it becomes impossible to conduct electricity. In this state, even if the object to be coated is hung by the hanger and the process proceeds to the electrodeposition step, the painting cannot be performed.

For this reason, conventionally, when the object to be coated is loaded on the transfer device at the loading station, two terminals of the tester are brought into contact with the current collector and the object to check the continuity. As a result, if it is found that a conduction failure has occurred,
The terminals of the tester were applied to the current collector, the primary hanger, the primary hanger and the secondary hanger, and the secondary hanger and the object to be coated, respectively, to check the continuity therebetween.

[Problem to be Solved by the Invention] In the conventional electrostatic coating apparatus, it is necessary to handle two terminals of the tester in order to check the continuity. Since it is necessary to check the continuity by applying the two terminals, there is a problem that workability is poor. In particular, when a trolley conveyor type transfer device is used, the hanger moves continuously, so if it takes time to check the continuity, it becomes impossible to carry out the next work of loading the article to be coated. there were.

Further, in the conventional apparatus, when the conduction failure is detected, the paint adhered by hand is removed, so that the operation is very troublesome.

SUMMARY OF THE INVENTION An object of the present invention is to provide an electrodeposition coating apparatus capable of easily performing a continuity check.

Another object of the present invention is to provide an electrodeposition coating apparatus capable of easily removing paint adhered to a current-carrying part.

[Means for Solving the Problems] An electrodeposition coating apparatus to which the present invention is directed is an electrodeposition tank, a transport device for transporting an object to be coated along the longitudinal direction of the electrodeposition tank, Voltage applying means for applying a voltage between the tank and the tank. The transport device includes a conductive primary hanger transferred along the guide rail, and a conductive secondary hanger having a lower end connected to the object to be coated and an upper end hooked to the primary hanger, The voltage applying means includes a current collector attached to the primary hanger and a power supply rail with which the current collector comes into contact while the primary hanger moves along the electrodeposition tank.

According to the present invention, in such an electrodeposition coating apparatus, the longitudinal direction is directed to the moving direction of the primary hanger in the vicinity of the loading work station where the work of hanging the secondary hanger connected to the object to be coated on the primary hanger is performed. A conductive plate disposed in a state where the current collector can be brought into contact with the current collector, a contact for contacting an object to be coated, and a conduction test device for checking an electric resistance between the conductive plate and the contact. It is characterized by the following.

In the apparatus of the present invention, it is preferable to further provide a vibration applying device for applying vibration to the object to be coated held on the primary hanger or the secondary hanger via the secondary hanger.

Further, a control for operating the vibration applying device when the electric resistance is detected to be equal to or more than a predetermined value by the energization test device, and stopping the operation of the vibration applying device when the electric resistance becomes less than the predetermined value. Preferably, a device is provided.

[Operation] With the provision of the conduction test apparatus as described above, the continuity between the conductive plate and each part can be checked by simply applying one contact to each part, and the continuity check can be performed quickly. .

Further, when the vibration imparting device is provided as described above, the object and the hanger are vibrated by the device to adhere to the contact portion between the primary hanger and the secondary hanger and the contact portion between the secondary hanger and the object to be coated. Insulating material such as paint can be easily removed.

Further, when the control device for controlling the vibration applying device is provided as described above, the operation of removing paint or the like attached to the hanger when a conduction failure is detected can be automatically performed, thereby improving the operation efficiency. .

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

First, the overall configuration of the apparatus according to the present embodiment will be described with reference to FIGS. FIG. 6 schematically shows the overall structure of an electrodeposition coating apparatus according to an embodiment of the present invention when viewed from above. This electrodeposition coating apparatus is an electric apparatus for housing electric equipment such as a transformer. The case is used as an object to be coated, and the object to be coated is subjected to electrodeposition coating.

In FIG. 6, reference numeral 1 denotes an electrodeposition tank having a predetermined length, in which a water-soluble paint 2 is stored. Reference numerals 3 and 4 denote a pretreatment booth and a cleaning booth arranged on both sides of the electrodeposition tank 1, respectively. The pretreatment booth is formed in a substantially U shape, and the cleaning booth is formed in a substantially J shape. A first loading work station 5 is provided at a position distant from the end of the electrodeposition tank 1 on the entrance side, and a second loading work station 6 is provided at a position adjacent to the end of the electrodeposition tank 1 on the entrance side. Have been.

Reference numeral 10 denotes a transfer device. The transfer device passes from the first loading work station 5 through the pretreatment booth 3 and the second loading work station 6, passes over the electrodeposition tank 1, and further has a washing booth 4 and a drying chamber (not shown). , And return to the first receiving work station 5.

Reference numeral 11 denotes an auxiliary transport device, which is an electrodeposition tank 1
Are arranged in parallel with the transfer device 10 along the longitudinal direction of the device.

In this electrodeposition coating apparatus, a first loading operation station performs a loading operation for mounting an electrical equipment case K as an object to be coated on the transfer device 10 as shown in FIG. The transfer device 10 includes a guide rail 12 provided over the entire length of an area where the transfer device is provided, a large number of trolleys 13 guided and guided by the guide rail 12, and a trolley 13.
And a conductive secondary hanger 15 whose lower end is connected to the object to be coated and whose upper end is hung on the primary hanger 14.

An electric device case K as an object to be coated has a heat radiation fin Kf attached to a side surface of a cylindrical case, and a lower end of a secondary hanger 15 is connected to a bottom portion thereof. Secondary hanger 15 is first
Is mounted in advance on the bottom of the electrical equipment case K waiting at the loading station, and attached to the electrical equipment case to be loaded when the primary hanger 14 is transported to the position of the first loading work station 5. Secondary hanger 15
Is hung on the lower end of the primary hanger 14.

The electrical equipment case K that has arrived at the transport device 10 at the first loading work station 5 is transported to the pre-processing booth 3 while being suspended almost vertically upside down as shown in FIG.

The auxiliary transport device 11 includes a guide rail as shown in FIG.
The trolley 17 includes a trolley 17 that travels guided by a guide rail 16, a hanger 18 attached to the trolley 17, and a hook 19 attached to a lower end of the hanger 18.
The auxiliary transfer device 11 is provided so as to form a loop above the electrodeposition tank 1, and is configured to perform a transfer operation in synchronization with the transfer device 10. The hanger 18 of the auxiliary transfer device is provided so as to correspond to the hanger of the transfer device 10 on a one-to-one basis.

In the second receiving work station 6, as shown in FIG. 8, the opening end of the electrical equipment case K suspended upside down from the transfer device 10 and facing downward is attached to the auxiliary transfer device 11.
The work of hooking with the hook 19 provided in the work is performed. In a state where the hook 19 is hooked on the opening end of the electric equipment case K, as shown in FIG. 8, the electric equipment case K is held diagonally.

The guide rails 12 of the transfer device 10 and the guide rails 16 of the auxiliary transfer device 11 are appropriately curved above the electrodeposition tank 1 so that a difference in height occurs between them.
In the process of being transported while being immersed in the guide rail 12
The attitude of the electrical equipment case K can be changed by the height difference between the electrical equipment case K and the electrical equipment case K. As a result, the electric device case K is swung in the process of being conveyed in the paint 2, and the accumulation of air and paint in the case is prevented. FIG. 9 shows one of various postures that the electric equipment case K takes in the process of being conveyed in the electrodeposition tank. 4 shows a state in which the electric device case K is oriented horizontally in a position lower than the height of the guide rail 16.

When the electrical equipment case K is transported to near the end on the exit side of the electrodeposition tank 1, the bottom of the case is raised and the hook 19 is removed. This allows the electrical equipment case K
Is again suspended upside down as shown in FIG. 7, and is transported into the washing booth 4 in this posture. The electrical equipment case K that has left the cleaning booth 4 is further sent to a drying device and dried.

In the case of the cation electrodeposition, the electric equipment case K is connected to the negative terminal of the DC power supply via the voltage applying means, and the electrode provided in the electrodeposition tank 1 is connected to the positive terminal of the DC power supply.

The voltage applying means is a power supply rail (not shown) with which the current collector attached to the primary hanger of the transfer device 10 contacts the current collector while the primary hanger moves along the electrodeposition tank 1. 1 is laid along the guide rail 12 of the transport device 10).

In FIG. 6, the positions marked with ▲ indicate the positions where the continuity check is performed in this embodiment, and devices for checking the continuity are provided at these positions.

Next, referring to FIGS. 1 to 5, the configuration of the main part of the device of the present invention will be described in detail. FIG. 1 shows the configuration of a transport device 10 and its peripheral devices in the vicinity of a first loading work station 5. In FIG. 1, reference numeral 12 denotes a guide rail having a substantially I-shaped cross section. The roller 13a of the trolley 13 is meshed with. A large number of trolleys 13 are provided, and are arranged at predetermined intervals in the longitudinal direction of the guide rails. Further, a drive device (not shown) for the chain 20 is provided, and the drive device drives the chain 20 to transfer the trolleys 13, 13, ... along the guide rail 12.

A primary hanger 14 made of a conductive material is attached to the trolley 13. The primary hanger includes a frame member 14a connected to a lower end of the trolley 13, and a hanging bracket 14b held by the frame member 14a. The hanging bracket 14b is made of a conductive plate such as copper, and has hooks 14b1 and 14b2 at the upper end and the lower end, each having a different direction by 90 degrees.
1 is held while being hooked on a bar 14a1 provided on the frame member 14a.

The secondary hanger 15 includes an inverted U-shaped connecting bracket 15a, and two chains 15b, 15b each having one end connected to both ends of the connecting bracket.
Hooks 15c, 15c respectively attached to the other ends of the chains 15b, 15b
And the connecting metal 15a is a hook at the lower end of the hanging metal 14b.
It is designed to be hooked on 14 b2.

In the present embodiment, as shown in FIG. 2, two pointed screws 15d, 15d are screwed into screw holes provided in the connection fitting 15a, and the sharp tips of these pointed screws 15d, 15d are suspended. The lower end of the metal fitting 14b comes into contact with the hook 14b2.

A hook 15c at the lower end of the secondary hanger 15 is formed by bending a conductor having a triangular cross section into a hook shape as shown in FIG. 3, and this hook is provided at the bottom end of the electrical equipment case K. Hooked in the hole.

In order to improve the electrical connection between the connection fitting 15a and the electrical equipment case K, the connection fitting 15a and one hook 15c are connected by an electric wire 23.

One end of an arm 24 extending in the horizontal direction is connected to the frame member 14a of the primary hanger 14, and a current collector 25 is connected to the other end of the arm 24.
Is held.

The current collector 25 and a power supply rail (not shown) constitute the voltage applying means (means for connecting the electric device case K to the negative terminal of the DC power supply).

One ends of L-shaped holding brackets 26 and 27 are fixed to the guide rail 12, and a strip-shaped conductive plate 28 is attached to the other ends of these holding brackets.
Is held. The conductive plate 28 is disposed at the same height as the current collector 25 with its longitudinal direction coinciding with the moving direction of the primary hanger 14. The arm bracket 24 holding the current collector 25 is formed such that the intermediate portion 24a is inclined toward the conductive plate 28, and the current collector 25 is moved by the spring property of the arm bracket 24 during the movement of the primary hanger 14. In a state of being pressed to the side, it comes into sliding contact with the conductive plate 28. In order to make this sliding contact smooth, inclined portions 28 are provided at both ends of the conductive plate 28.
a, 28b are provided.

A bracket 30 is fixed to a lower end of the holding bracket 27, a lamp socket 31 is attached to the bracket, and an indicator lamp 32 is attached to the socket.

The loading work station is also provided with an electricity test device 33. The test device is connected to a lamp 32 through a wire 34
And is connected to the conductive plate 28 through the electric wire 35. The conduction test device 33 is also connected to a conduction check contact 37 through an electric wire 36. The contact 37 is an insulating grip formed so that the operator can hold it by hand
37a and a stylus 37b protruding forward from the grip 37a, and the core of the electric wire 36 is connected to the stylus 37b. The stylus 37b has a sharp tip, and the tip of the stylus 37b is brought into contact with the electrical equipment case K held by the secondary hanger 15.

The conduction test device 33 checks the electric resistance between the conductive plate 28 and the contact 37, and an example of the configuration is shown in FIG. In FIG. 4, 38 is a battery and 39 is a current collector.
This is a resistance detector that detects the electric resistance of the circuit between the contact 25 and the contact 37. The resistance detector 39 may be of any type as long as it is in contact with the current collector 25 and outputs a signal reflecting the resistance R of the circuit between the current collector 25 and 37. When the voltage of the battery 38 can be considered to be constant, a resistor is used as the detector 39, and the voltage at both ends of the resistor is used to calculate the battery 38 → the conductive plate 28 → the collector 25
→ Primary hanger 14 → Secondary hanger 15 → Electrical equipment case K
By detecting the current flowing through the path from the contact 37 to the detector 39 to the battery 38, it is possible to detect the resistance value of the circuit between the current collector 25 and the collector 37.

40 is a switch circuit for turning on and off the current flowing through the dancing 32 from the battery 38, and the switch circuit when the resistance R of the resistance detector 39 has detected exceeds a set value R _s (in contact with the current collector 25 37 (When the current flowing through the circuit during the period becomes less than the set value), and the lamp 32 is turned on.

Reference numeral 41 denotes a switch that is turned on when the resistance value detected by the resistance detector 39 is equal to or less than a set value. Reference numeral 42 denotes a buzzer driven by the battery 38 when the switch 41 is turned on.

Note in this embodiment, the conductive plate 28 and the electrical resistance R between the contact 37 turns on the lamp 32 when it exceeds the set value R _s, buzzer when the electric resistance R is less than set value R _s Although so as to operate the 42 reverse when the electric resistance R is equal to or less than the set value R _s (when energized state is normal) is lit Ranbu 32, when the electric resistance exceeds the set value The buzzer 42 may be operated.

Further, an electric indicating instrument for displaying a resistance value (or a current value) may be provided as a display means, and the energized state may be checked from the instruction.

Further, one of the display means (buzzer 42 in the above example) for displaying that the energization state is normal and the display means (the lamp 32 in the above example) for indicating that the energization state is defective may be omitted. it can.

Further, in this embodiment, when an energization failure is detected, the object to be applied or a hanger suspending the object to be applied is vibrated to remove the paint adhering to the energized portion, thereby recovering the energized state. A device 43 is provided.

The vibration applying device 43 is provided with a support arm on the guide rail 12.
A fixed frame 45 supported via 44, 44, slide bars 46, 46 extending in a direction perpendicular to the guide rail 12 and slidably penetrating the fixed frame 45, and attached to the tips of these slide bars. Movable frame 47,
Air cylinder 48 for moving the movable frame 47 forward and backward
And a vibrating member 50 displaceably supported by the movable frame 47 via supporting devices 49, 49, and air vibrators 51, 51 attached to the vibrating member 50.

The vibration imparting device is positioned so that the vibration member 50 comes into contact with the side surface of the electrical equipment case K suspended from the transport device.

The air cylinder 48 is driven when an energization failure is detected by the energization test device. When the air cylinder is driven, the movable frame 47 moves forward and the vibration member 50 comes into contact with the side surface of the electric device case K. In this state, the air vibrators 51, 51 are driven, and vibration is given to the electric device case K. Since this vibration is also transmitted to the secondary hanger 15, an insulating material such as paint adhered to the contact portion between the secondary hanger 15 and the electric equipment case K and the contact portion between the secondary hanger 15 and the primary hanger. Is removed, and the energized state is restored.

In particular, in this embodiment, the connecting bracket 15a provided on the secondary hanger 15 is provided with sword-point screws 15d, 15d, and since the sharp tips of these sword-tip screws contact the primary hanger, the vibration , The conduction between the primary hanger and the secondary hanger is easily restored. The hook 15c provided at the lower end of the secondary hanger has a triangular cross section, and the hook has sharp corners. The energized state with the device case K is easily restored.

The vibration imparting device 43 may be manually activated when a conduction failure is detected.However, in order to improve work efficiency, the operation of the vibration imparting device may be automatically performed. preferable. For this reason, in the present embodiment, when it is detected by the conduction tester that the electric resistance R of the circuit between the current collector 25 and the contact 37 is equal to or greater than the set value, the vibration member 50 is moved to the operating position (for example, when the object (The contact position) to operate the air cylinder 48, and when it is detected that the electric resistance R has become less than the set value, the air vibrator is stopped and the vibration member 50 is moved to the retreat position where the vibration member 50 is separated from the object to be coated. A retraction control device is provided.

This control device is configured, for example, as shown in FIG. Resistance detector 39 in FIG detecting the resistance R between the current collector 25 and the contacts 37 provided in the conduction testing device 33, 61 generates a signal indicating the setting value R _s of the resistor R Setting signal device, 62 is the output signal of resistance detector 60 and setting signal generator
In deviation calculator for determining the deviation between the 61 output signals of the deviation calculator 62, the resistance R is output different deviation signal of the code in the case of less than the set value and when it exceeds the set value R _s. 63 is a command signal generator for generating a command signal in response to the output signal of the deviation computing unit, the command signal generator, the resistor R is set value R _s
Forward command signal for commanding the movable frame 47 to move forward when a deviation signal indicating that it exceeds
Generating a va, resistor R to generate a retraction command signal Vb to instruct the retracting the movable frame 47 when a deviation signal indicating that it is below the set value R _s is input.

Reference numeral 64 denotes an air cylinder operation circuit that operates a solenoid valve that controls the supply and exhaust of air to and from the air cylinder 48 by inputting the command signals Va and Vb. This operation circuit operates when the forward command signal Va is input. The solenoid valve is operated so as to move the rod of the air cylinder backward when the retreat command signal Vb is input.

65 is a vibration member position detector, which is a vibration member
When 50 moves to a position where it contacts the electrical equipment case, it detects this and generates a detection signal. The detection of whether or not the vibration member 50 has moved to a position where it contacts the electrical equipment case may be performed by detecting the position of a rod of an air cylinder, or the position detection of a limit switch or the like on the movable frame or the vibration member. It may be performed by providing a means.

The output signal of the position detector 65 is provided to a vibrator drive circuit 66. The vibrator drive circuit 66 operates these vibrators by opening a solenoid valve for supplying air to the air vibrator 51 while it is detected that the vibration member 50 is at a position in contact with the electrical equipment case.

In the above embodiment, the vibration member 50 is brought into contact with the electrical equipment case K to apply vibration.
Vibration may be applied to the secondary hanger by contacting 50 with a part of the secondary hanger 15.

The vibrator is not necessarily limited to the air vibrator, and a vibrator using an arbitrary driving source can be used. For example, an electromagnetic vibrator using an AC electromagnet, an eccentric rotary vibrator in which a weight having a rotating shaft at an eccentric position is rotated by an electric motor, or the like can be used.

The control device shown in FIG. 5 is configured to operate the vibration imparting device when a failure in the energized state is detected, and stop the operation of the vibration imparting device when it is detected that the energization is restored. However, in order to ensure the recovery of the energization, the vibration may be continuously applied for a certain period of time even after the recovery of the energization is detected. Further, the configuration may be such that the vibration imparting device is operated for a predetermined period of time when a failure in the energized state is detected.

When the electrodeposition coating is applied to the electrical equipment case by the apparatus of the above embodiment, the secondary hangers 15 are attached to the electrical equipment cases K waiting at the first loading work station. Then, the electrical equipment case to be loaded is lifted by placing it on a lift, and the connecting bracket 15a of the secondary hanger attached to the electrical equipment case is hooked on the primary hanger 14. Then, the lift is lowered to bring the electrical equipment case into a state of being suspended from the transport device as shown in FIG. 1, and the contact 37 is applied to the electrical equipment case K to check the energized state.
As a result, when an energization failure is detected, the vibration applying device
43 operates to vibrate the electrical equipment case K, remove insulators such as paint adhered to the secondary hanger and the primary hanger, and restore the energized state to a normal state.

In the above embodiment, since the continuity test is also performed at the second receiving station before the electrodeposition tank, the second receiving station 6 is provided with the same equipment as that shown in FIG. However, it is not always necessary to perform the continuity test at both stations, and a continuity test facility may be provided only at one of the first receiving work station and the second receiving work station.

[Effects of the Invention] As described above, according to the present invention, the continuity of the circuit between the current collector and the object to be coated can be checked by simply providing a current test device and applying one contact to the object to be coated. Therefore, there is an advantage that the continuity check can be quickly performed.

Further, according to the invention described in claim 2, since the vibration applying device for applying vibration to the object to be coated or the secondary hanger is provided, the object to be coated and the hanger are vibrated so that the primary hanger and the secondary hanger can be moved. When an insulating material such as a paint adheres to the contact portion or the contact portion between the secondary hanger and the object to be coated, there is an advantage that the conduction can be restored by removing the insulator.

According to the third aspect of the present invention, a control device for controlling the vibration applying device is provided to automatically operate the vibration applying device when a conduction failure is detected. Work can be performed efficiently.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is an enlarged sectional view showing the vicinity of a joint between a primary hanger and a secondary hanger used in the embodiment, and FIG. An enlarged perspective view of a hook provided at a lower end of a secondary hanger used in the example,
FIG. 4 is a block diagram showing a configuration of an energization test device used in the embodiment, FIG. 5 is a block diagram showing an example of a configuration of a control device for controlling the vibration applying device, and FIG. FIG. 7 is a top view schematically showing the overall configuration of the coating apparatus, FIG. 7 is a front view schematically showing a state in which the article to be coated is suspended from the transporting apparatus, and FIGS. It is a front view which shows the different state at the time of suspending a to-be-coated material with a hanger from both a conveyance apparatus and an auxiliary conveyance apparatus, and performing electrodeposition coating. 12… Guide rail, 13… Trolley, 14… Primary hanger, 15… Secondary hanger, 20… Chain, K …… Electrical equipment case (object to be coated), 25 …… Current collector, 28… ... Conductive plate, 33 ... Electrical test device, 37 ... Contact.

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Shigeharu Furukawa 1-8-18 Ohamacho, Amagasaki City, Hyogo Prefecture Inside the Kyoto Hanshin Paint Co., Ltd. (56) References JP 50-142640 (JP, A) Showa 55-103271 (JP, U) Actually open Showa 61-11768 (JP, U)

Claims (3)

(57) [Scope of request for utility model registration] 1. An electrodeposition tank, a transfer device for transferring an object to be coated along a longitudinal direction of the electrodeposition tank, and voltage applying means for applying a voltage to the object to be coated. A conductive primary hanger transported along the guide rail, and a conductive secondary hanger having a lower end connected to the object to be coated and an upper end hooked to the primary hanger, The electrode coating apparatus includes a current collector attached to the primary hanger and a power supply rail that contacts the current collector while the primary hanger moves along the electrodeposition bath. A state in which the longitudinal direction is directed to the movement direction of the primary hanger and a state where the current collector can be brought into contact with a loading work station near which the work of hanging the secondary hanger connected to the coating material on the primary hanger is performed. Conductive plates arranged in The contacts for the continuity check, electrodeposition coating device, characterized in that provided with the energizing test device for checking the electrical resistance between the contacts and the conductive plate. 2. The electrodeposition coating apparatus according to claim 1, further comprising a vibration applying device for applying vibration to the object to be coated held on the primary hanger or the secondary hanger via the secondary hanger. . 3. When the electric resistance is detected by the electric conduction tester to be equal to or more than a predetermined value, the vibration applying device is operated to apply vibration to the object to be coated or the secondary hanger, and 3. The electrodeposition coating apparatus according to claim 2, further comprising a control device for stopping the operation of the vibration applying device when the value of the vibration applying device becomes less than a predetermined value.