KR101229921B1 - Apparatus for electro painting - Google Patents

Abstract

The present invention relates to an electrodeposition coating apparatus, and more particularly, to an electrodeposition coating apparatus capable of forming a coating film of various thicknesses and preventing the formation of an air layer.
The present invention includes an electrodeposition tank in which paint is freshly supplied and a cathode current is supplied, a rail installed to maintain an interval with the electrodeposition tank, and a plurality of cradles installed to be movable along the rail and mounted so that a work object passes through the electrodeposition tank. It provides an electrodeposition coating device including a drive unit for moving the cradle, a current supply unit for supplying a cathode current so that the supply time is different for each cradle, and a vibration unit for flowing the workpiece through the electrodeposition tank.

Description

Electrodeposition Coating Device {APPARATUS FOR ELECTRO PAINTING}

The present invention relates to an electrodeposition coating apparatus, and more particularly, to an electrodeposition coating apparatus capable of forming a coating film of various thicknesses and preventing the formation of an air layer.

In general, electrodeposition coating is an electrophoretic coating, which means a method of painting a vehicle body or a part using an aqueous paint or a water-soluble resin as an electrolytic bath.

Since the suspension members installed on the bottom of the vehicle are exposed through the bottom of the vehicle, rainwater or foreign matter on the ground may contact and corrode, so that a coating film is formed on the outer wall of the suspension member by applying a functional paint to prevent corrosion.

Spring, shock absorbers and stabilizers are installed to prevent the body from shaking. These members are installed on the lower arm, and one end of the lower arm is fastened by a bush to the knuckle (or carrier) of the wheel. The other end of the lower arm is fastened to the crossmember (or subframe) by a bush.

Here, a member such as a lower arm and a cross member is called a suspension member, and a trailing arm and a torsion beam are installed in the small car in place of the lower arm and the cross member.

Suspension members as described above, and members that are exposed to the outside or in contact with the fluid, such as oil pans, oil tanks are subjected to electrodeposition coating to form a coating film passing through the electrodeposition coating device after the production of the product is completed.

The technical structure described above is a background technique for assisting the understanding of the present invention, and does not mean the prior art widely known in the technical field to which the present invention belongs.

Since the general electrodeposition coating apparatus forms a coating film having the same thickness, it is difficult to form a coating film thickness required by the workpiece, and there is a problem in that the electrodeposition coating apparatus needs to be reset whenever the object to be subjected to electrodeposition coating is changed.

In addition, a general electrodeposition coating apparatus may have an air layer formed inside the coating layer when the coating layer is formed on the outer wall of the workpiece, and thus, the surface of the finished electrodeposition coating process may not be beautiful.

Therefore, there is a need for improvement.

An object of the present invention is to provide an electrodeposition coating apparatus capable of forming a coating film of various thicknesses and preventing the formation of an air layer.

In order to achieve the above object, the present invention is an electrodeposition tank in which the paint is fresh and the anode current is supplied, the rail is installed so as to maintain a distance from the electrodeposition tank, and the movable object is installed so as to be movable along the rail, the electrodeposition electrode A plurality of cradles mounted to pass through the inside of the tank, a driving unit for moving the cradle, a current supply unit for supplying a cathode current such that the supply time is different for each cradle, and a vibrating unit for flowing the work object passing through the electrodeposition tank; It provides an electrodeposition coating device comprising a.

The cradle includes a support part slidably connected to the rail by a roller, a support part connected to the support part, and a hanger to which a work object is mounted, and an insulation part installed between the support part and the support part. It is characterized by including.

The current supply unit may include: a first booth bar arranged to maintain a gap with the mounting part and connected to a power line; and a second booth bar arranged to maintain a gap with the first bus bar and connected to a power line; A first terminal portion installed in the portion and in contact with the first bus bar, and a second terminal portion installed in the mounting portion and in contact with the second bus bar, wherein the first bus bar is shorter than the second boot bar. It is characterized by being formed.

The first terminal part may include a first elastic part installed on the upper surface of the mounting part and a first contact part installed on the first elastic part and in contact with the first bus bar.

The second terminal part may include a first elastic part installed on the side of the mounting part and a second contact part installed on the first elastic part and in contact with the second bus bar.

In addition, the vibrating portion, characterized in that it comprises a vibration bar extending from the rinsing, the vibration roller is installed, and the uneven portion provided in the movement path of the vibration roller.

In addition, the rinsing is provided with a hook that is rotatably mounted to the holder, the hook is characterized in that it is rotatably connected to the rinsing.

The electrodeposition coating apparatus according to the present invention can easily control the time to supply the current to each work object according to the type of work object passing through the electrodeposition tank to easily form a coating film of different thickness required in various products There is an advantage to this.

In addition, the electrodeposition coating apparatus according to the present invention can prevent the formation of an air layer inside the coating film when the coating film is formed on the outer wall of the workpiece because the workpiece passing through the electrodeposition flows in a plurality of directions, the electrodeposition coating process is completed There is an advantage that the surface of the product is beautiful.

1 is a block diagram showing an electrodeposition coating apparatus according to an embodiment of the present invention.
Figure 2 is a perspective view of the cradle and the vibration unit of the electrodeposition coating device according to an embodiment of the present invention.
Figure 3 is a perspective view showing a cradle and the first booth bar connection state of the electrodeposition coating apparatus according to an embodiment of the present invention.
Figure 4 is a perspective view showing a cradle and the second boot bar connection state of the electrodeposition coating apparatus according to an embodiment of the present invention.
5 is an exploded perspective view showing a holder of the electrodeposition coating apparatus according to an embodiment of the present invention.
6 is a perspective view illustrating a hanger and a vibrator of the electrodeposition coating apparatus according to the exemplary embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the electrodeposition coating apparatus according to the present invention.

In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms described below are terms defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator.

Therefore, definitions of these terms should be made based on the contents throughout this specification.

1 is a block diagram showing an electrodeposition coating apparatus according to an embodiment of the present invention, Figure 2 is a perspective view showing a cradle and a vibrating portion of the electrodeposition coating apparatus according to an embodiment of the present invention, Figure 3 Is a perspective view of the cradle and the first booth connection state of the electrodeposition coating apparatus according to an embodiment of the.

In addition, Figure 4 is a perspective view of the cradle and the second boot bar connection state of the electrodeposition coating apparatus according to an embodiment of the present invention, Figure 5 is a cradle of the electrodeposition coating apparatus according to an embodiment of the present invention is shown 6 is an exploded perspective view, and FIG. 6 is a perspective view illustrating a hanger and a vibrator of an electrodeposition coating apparatus according to an exemplary embodiment of the present invention.

1 to 6, the electrodeposition coating apparatus according to an embodiment of the present invention is the electrode is installed in the electrodeposition tank 10, the electrode is supplied with fresh water and the anode current is supplied so as to maintain a distance between the electrodeposition tank 10 30, a plurality of cradles 50 installed to be movable along the rails 30 and mounted to allow the work object to pass through the electrodeposition tank 10, and a driving unit 70 for moving the cradle 50. In addition, the cradle 50 includes a current supply unit 80 for supplying a cathode current so that the supply time is different, and a vibrating unit 90 for flowing a work object passing through the electrodeposition tank 10.

The cradle 50 of the present embodiment includes a first cradle 50a having a relatively short current supply time, and a second cradle 50b having a longer current supply time than the first cradle 50a.

Therefore, the work object that is caught by the first cradle 50a and passes through the electrodeposition tank 10 has a shorter time for the electrodeposition coating to proceed compared to the work object that is caught by the second cradle 50b and passes through the electrodeposition tank 10. Because of this, the thickness of the coating film formed on the outer wall of the workpiece is thinly formed.

On the other hand, the work object which is caught by the second cradle 50b and passes through the electrodeposition tank 10 is compared with the work object that is caught by the first cradle 50a and passes through the electrodeposition tank 10. Since it is made long, the thickness of the coating film formed on the outer wall of the workpiece is formed thick.

As described above, the supply time of the current supplied to the holder 50 by the current supply unit 80 is different for each holder 50.

Therefore, the operator can adjust the thickness of the coating film by classifying and placing the workpiece by the holder 50 without resetting the electrodeposition coating device to adjust the thickness of the coating film required for each work object.

Since the work object passing through the electrodeposition tank 10 by the cradle 50 flows by the operation of the vibrator 90, vibration is generated when the paint film is formed on the outer wall of the work object, thereby preventing the air layer from being formed inside the paint film. Done.

The cradle 50 has a support portion 52 slidably connected to the rail 30 by a roller 54 and a hanger portion 56 to which a hanger 57 connected to the support portion 52 and to which a work object is mounted is connected. ), And an insulating portion 58 provided between the mounting portion 56 and the support portion 52.

The current is supplied to the work object caught by the mounting unit 56 through the current supply unit 80, and the current flowing along the mounting unit 56 by the insulating unit 58 is supplied to the support unit 52 and the rail 30. Do not

The current flowing along the mounting portion 56 is supplied to the workpiece through the hanger 57 to supply a cathode current to the workpiece, and the anode current supplied to the electrodeposition tank 10 and the electrolysis action proceed to the workpiece. Electrodeposition coating in which paint is deposited is in progress.

The support portion 52 includes a pillar plate 52a to which the roller 54 is rotatably connected, and a support plate 52b connected to the pillar plate 52a and to which the mounting portion 56 is connected.

The pillar plate 52a is formed of a pair of plates connected to the roller 54 rotatably installed on the rail 30 and extending downward, and at the ends of the pair of pillar plates 52a in a horizontal direction. The support plate 52b to be disposed is coupled.

A hole is formed in the center of the support plate 52b, and the mounting unit 56 is coupled, and an insulating unit 58 is interposed between the mounting unit 56 and the support plate 52b to supply the mounting unit 56. The current is prevented from being transferred to the rail 30 along the support plate 52b and the column plate 52a.

The insulating portion 58 penetrates through the insulating piece 58a interposed between the support plate 52b and the mounting portion 56, the support plate 52b, the mounting portion 56, and the insulating piece 58a, and is fastened to the fastening member. It includes an insulating pin (59a) is inserted.

The insulating piece 58a is a plate-shaped insulating member interposed between the support plate 52b and the mounting portion 56, and includes an outer wall of the support plate 52b in which a plurality of fastening holes 58b are formed, and a support plate ( Three insulating pieces 58a are disposed in the space between 52b) and the mounting portion 56 and the outer wall of the mounting portion 56, respectively.

Since the insulating pin 59a inserted into the fastening hole 58b passes through the mounting portion 56 and the support plate 52b, the mounting portion 56 is connected to the support plate 52b and the mounting portion 56. The current supplied through the conductive plate 52b is not conducted to the side.

Since the insulating pin 59a has a long through hole 59b formed in the axial direction and a fastening member is inserted to penetrate the through hole 59b, the mounting pin 56 and the fastening member do not come into contact with each other. One end of the jaw portion (59c) is formed so that the head of the fastening member is not in contact with the mounting portion (56).

The drive unit 70 includes a chain 72 in which the column plate 52a is inserted and moved while maintaining a distance from the rail 30, so that the column plate 52a is wound when the chain 72 is wound by a motor (not shown). To move in the moving direction of the chain (72).

Here, the motor and the winding roller (not shown) for moving the chain 72 can be easily carried out by those skilled in the art who recognized the technical configuration of the present invention will not be described in detail or description.

The current supply unit 80 is disposed to maintain a gap with the mounting unit 56 and the first bus bar 82 to which the power line is connected, and is arranged to maintain a gap with the first bus bar 82 and the power line is connected. The second bus bar 84, the first terminal part 86 installed on the mounting part 56 and in contact with the first bus bar 82, and the second boot bar 84 installed on the mounting part 56. The second terminal portion 88 in contact with the ().

The current is supplied to the work object caught on the first cradle 50a through the first boot bar 82, and the current is supplied to the work object caught on the second cradle 50b through the second boot bar 84.

The first bus bar 82 is disposed above the mounting portion 56 and is formed in a long panel shape along the rail 30 and is widely disposed in the horizontal direction.

In addition, the first terminal portion 86 in contact with the first boot bar 82 is bent in a '∠' shape, the first elastic portion 86a, the bottom of which is coupled to the upper surface of the mounting portion 56, and the first elastic It is installed on the upper end of the portion (86a) and includes a first contact portion (86b) moved in contact with the first boot bar (82).

Since the first elastic portion 86a is installed on the upper surface of the mounting portion 56, the first contact portion 86b is disposed above the mounting portion 56 to contact the first bus bar 82, and the first elastic portion Since the first contact portion 86b is pressed toward the first busbar 82 by the 86a), the first contact portion 86b and the first busbar (when the first holder 50a moves along the rail 30). 82) to remain in contact.

The second bus bar 84 is disposed at the side of the mounting portion 56 and is formed in a long panel shape along the rail 30 and is widely disposed in the vertical direction.

In addition, the second terminal portion 88 which is in contact with the second bus bar 84 is bent in a '∠' shape, the second elastic portion 88a, the bottom of which is coupled to the side of the mounting portion 56, and the second elastic It is installed on the upper end of the portion (88a) and includes a second contact portion (88b) moved in contact with the second boot bar (84).

Since the second elastic portion 88a is installed on the side of the mounting portion 56, the second contact portion 88b is disposed at one side of the mounting portion 56 to be in contact with the second bus bar 84, and the second elastic portion 88 Since the second contact portion 88b is pressed toward the second busbar 84 by the 88a), the second contact portion 88b and the second busbar (when the second mounting base 50b moves along the rail 30). 84) to be kept in contact.

Here, since the first bus bar 82 is formed to be shorter than the second bus bar 84, the current supply time is relatively short in the first cradle 50a through which the current is supplied through the first bus bar 82. In this case, the current supply time is relatively long in the second cradle 50b through which the current is supplied through the second boot bar 84.

Therefore, the work object that is caught by the first cradle 50a and passes through the electrodeposition tank 10 has a short time for electrodeposition coating to proceed, so that the thickness of the coating film formed on the outer wall of the work object is thin, and the electrodeposition tank is caught by the second cradle 50b. The work object passing through (10) has a relatively long time that the electrodeposition coating proceeds, so that the thickness of the coating film formed on the outer wall of the work object is thickened.

The vibrating unit 90 includes a vibrating bar 92 extending from the rinsing 57 and provided with a vibrating roller 94, and an uneven part 96 provided in the movement path of the vibrating roller 94.

When the work object is mounted on the rinser 57 caught by the holder 50, and the holder 50 is introduced into the electrodeposition tank 10 by the operation of the driving unit 70, it extends downward from the rinsing 57. The vibrating bar 92 is slid along the uneven portion 96 formed on the bottom surface of the electrodeposition tank 10.

Since the vibrating roller 94 is installed at the lower end of the vibrating bar 92, the vibrating roller 94 is slid along the uneven portion 96 to generate vibration in the vertical direction.

Therefore, the rinser 57 passing through the electrodeposition tank 10 passes through the electrodeposition tank 10 while vibrating up and down by the flow of the vibration bar 92, so that when the coating film is formed on the outer wall of the workpiece, It is possible to prevent the formation of an air layer.

The rinsing 57 is provided with a locking ring 57b rotatably mounted to the holder 50, and the locking ring 57b is rotatably connected to the rinsing 57.

Since the locking ring 57b is formed in a curved ring shape, when the rinsing 57 is flown by the vibrating bar 92, a slip is generated between the locking ring 57b and the holder 50 while the rinsing 57 flows. do.

In addition, since the locking ring 57b is rotatably connected to the rinse 57 by the fastening member, an additional hinge is provided.

Therefore, the rinsing 57 may be flown in a plurality of directions in the front-rear direction and the left-right direction by the vibration transmitted by the vibration bar 92.

Reference numeral 57a denotes a locking portion to which the work object is caught.

Looking at the operation of the electrodeposition coating device according to an embodiment of the present invention configured as described above are as follows.

When the electrodeposition coating is started, the work object requiring the thin coating film hangs on the first cradle 50a, and the work object requiring the thick coating film hangs on the second cradle 50b to start the transfer of the work object.

At this time, when the chain 72 moves along the rail 30 by the operation of the driving unit 70, the cradle 50 moves along the rail 30 by the column plate 52a inserted into the chain 72. Since the roller 54 installed on the top of the column plate 52a is rotated along the rail 30, the movement of the holder 50 is made smoothly.

When the cradle 50 moving along the rail 30 passes through the upper portion of the electrodeposition tank 10, the object caught by the hanger 57 of the cradle 50 is received into the electrodeposition tank 10, so that the electrodeposition tank 10 is carried out. ) Fresh water is in contact with the workpiece.

In this case, since the first contact portion 86b and the second contact portion 88b are in contact with the first booth bar 82 and the second booth bar 84, the current supplied through the first booth bar 82 is determined by the first contact part 86b and the second contact part 88b. The current is supplied to the workpiece through the first cradle 50a, and the current supplied through the second bus bar 84 is conducted to the workpiece through the second cradle 50b.

Therefore, the electrodeposition coating process in which the paint is electrodeposited on the workpiece by the anode current supplied to the electrodeposition tank 10 and the cathode current supplied to the workpiece is performed.

Here, the work object that is caught by the first cradle 50a and passes through the electrodeposition tank 10 has a short length of the first bus bar 82, so that a current supply time is short, so that a coating film formed on the outer wall of the work object is relatively thin. .

In addition, since the length of the second booth 84 is longer than that of the first booth 82, the coating object formed on the outer wall of the work piece is caught by the second mounting bracket 50b and passes through the electrodeposition tank 10. It is formed relatively thick.

Of course, it is possible to form the thickness of the various coating film by installing three or more of the number of busbars (82, 84), which can be easily changed and implemented by those skilled in the art to recognize the technical configuration of the present invention another embodiment Detailed drawings or descriptions thereof will be omitted.

During the electrodeposition coating process as described above, since the vibrating bar 92 extending downward from the rinsing 57 moves while maintaining the state adjacent to the uneven portion 96, the lower end of the vibrating bar 57. The vibrating roller 94 installed at the side moves the vibrating bar 92 in the vertical direction while moving along the inclined surface of the uneven portion 96.

When the vibration bar 92 flows in the up and down direction, a rotational motion is generated at the connection portion between the locking ring 57b and the cradle 50, and a rotational movement is also generated at the connection portion between the locking ring 57b and the rinsing 57. Therefore, the rinsing 57 is advanced while flowing in a plurality of directions.

Therefore, when the coating film is formed on the outer wall of the workpiece, the workpiece placed on the rinsing 57 flows in a plurality of directions, thereby preventing the formation of an air layer inside the coating film.

As a result, it is possible to provide an electrodeposition coating apparatus capable of forming a coating film having various thicknesses and preventing the formation of an air layer.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. .

In addition, although the electrodeposition coating apparatus for suspension members of the vehicle has been described as an example, this is merely exemplary, and the electrodeposition coating apparatus of the present invention may be used in other products other than the electrodeposition coating apparatus for the suspension members of the vehicle.

Accordingly, the true scope of the present invention should be determined by the following claims.

10: electrodeposition tank 30: rail
50: holder 52: support
54: roller 56: mounting portion
58: insulation 70: drive
72: chain 80: current supply unit
82: first booth 84: second booth
86: first terminal portion 88: second terminal portion
90: vibrating unit 92: vibrating bar
94: vibratory roller 96: uneven portion

Claims (7)

An electrodeposition tank 10 in which the paint is fresh and the anode current is supplied;
A rail (30) installed to maintain a spacing with the electrodeposition tank (10);
A plurality of cradles 50 installed to be movable along the rails 30 and mounted to allow the work object to pass through the electrodeposition tank 10;
A driving unit 70 for moving the holder 50;
A current supply unit 80 supplying a cathode current such that the supply time is different for each cradle 50; And
It includes a vibrating unit (90) for flowing the work object passing through the electrodeposition tank (10);
The cradle 50,
A support portion 52 slidably connected to the rail 30 by a roller 54;
Mounting unit 56 is connected to the support portion 52 is connected to the hanger on which the work object is mounted; And
An insulator (58) installed between the mounting portion (56) and the support portion (52);
The current supply unit 80,
A first bus bar 82 disposed to maintain a spacing with the mounting part 56 and to which a power line is connected;
A second bus bar 84 disposed to maintain a distance from the first bus bar 82 and to which a power line is connected;
A first terminal part 86 installed on the mounting part 56 and in contact with the first bus bar 82; And
A second terminal part (88) installed on the mounting part (56) and in contact with the second bus bar (84);
The first boot bar (82) is shorter than the second boot bar (84);
The first terminal portion 86,
A first elastic part 86a installed on an upper surface of the mounting part 56; And
A first contact portion (86b) installed in the first elastic portion (86a) and in contact with the first bus bar (82);
The second terminal unit 88,
A second elastic part 88a installed at a side of the mounting part 56; And
A second contact portion (88b) installed in the second elastic portion (88a) and in contact with the second bus bar (84);
The vibration unit 90,
A vibration bar 92 extending from the hanger and having a vibration roller 94 installed thereon; And
And an uneven portion 96 provided in the movement path of the vibrating roller 94;
The cradle 50 includes a first cradle 50a and a second cradle 50b, and the first terminal portion 86 is installed on the first cradle 50a and the second cradle 50b. ) Is provided with the second terminal portion 88;
The support portion 52,
A pillar plate 52a to which the roller 54 is rotatably connected; And
A support plate 52b connected to the pillar plate 52a and to which the mounting unit 56 is connected;
The insulating portion 58,
An insulating piece (58a) interposed between the support plate (52b) and the mounting portion (56); And
An insulating pin (59a) penetrating the support plate (52b), the mounting portion (56), and the insulating piece (58a) and into which a fastening member is inserted;
The driving part 70 includes a chain 72 into which the pillar plate 52a is inserted and moved while maintaining a distance from the rail 30;
The pillar plate 52a is formed of a pair of plates connected to the roller 54 rotatably installed on the rail 30 and extending downward, and ends of the pair of pillar plates 52a. The support plate 52b disposed in the horizontal direction is coupled thereto.
A hole is formed in the center of the support plate 52b so that the mounting portion 56 is coupled, and the insulating portion 58 is interposed between the mounting portion 56 and the supporting plate 52b to support the mounting portion 56. To prevent current supplied to (56) from being transferred to the rail (30) along the support plate (52b) and the column plate (52a);
The insulation piece 58a is a plate-shaped insulation member interposed between the support plate 52b and the mounting portion 56, and a plurality of fastening holes are formed and an outer wall of the support plate 52b and the support. Three insulating pieces (58a) are disposed in the space between the plate (52b) and the mounting portion (56) and the outer wall of the mounting portion (56), respectively;
The insulating pin 59a inserted into the fastening hole part penetrates the mounting part 56 and the support plate 52b, thereby connecting the support plate 52b and the mounting part 56 and the mounting part. To prevent the current supplied through the 56 from being conducted to the support plate 52b;
The insulating pin 59a has an elongated through hole formed in the axial direction, and the fastening member is inserted to penetrate the through hole so that the mounting part 56 does not come into contact with the fastening member, and one end of the through hole is provided. The jaw portion is formed in the electrodeposition coating device, characterized in that the head of the fastening member does not contact the mounting portion (56).
delete delete delete delete delete The method of claim 1,
The hanger is provided with a hook that is rotatably mounted on the cradle, the hook is electrodeposition coating apparatus, characterized in that rotatably connected to the hanger.

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