JP2599067B2 - Equipment for electrodeposition coating - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrodeposition coating apparatus for coating and protecting a metal surface.

[0002]

2. Description of the Related Art With the development of science and technology, research and development of metal surface treatment has been carried out, and the technology has been used in various fields. The same applies to the coating field in the art, and progress has been made from brushing to air spray coating / airless spray coating to automatic coating. With the progress of such coating technology, electrodeposition coating, which is a part of it, has been developed, and the coating particles that are charged with a DC electric field move to the oppositely charged object and bend out. There is a dip coating method, and there are an anion type when the charge of paint particles is negative and a cationic type when the charge is positive. Since the 1980s, the cationic type has become mainstream, and metals in various fields such as automobiles, electric appliances and building materials Widely used as rust prevention treatment for products.

[0003]

Since the electrodeposition coating is a dip coating method, it has been considered impossible to form an object to be coated in such a manner that there is an air pocket or pumping out of the object due to its technical content. For example, looking at the transformer case, if it is hung in a normal upward state because of the pot shape, the processing liquid will be pumped out when rising,
The process must be emptied before proceeding to the next step, but the process will proceed until the processing liquid is pumped. Also, 18
Even if the airbag is hung in a 0 ° turning direction, the air is trapped inside during immersion and buoyancy is generated, so that internal processing cannot be performed sufficiently.
Furthermore, since the transformer case is provided with fins radially as a measure against heat radiation, even if the transformer is suspended horizontally, the processing liquid accumulates in the fins and cannot be sufficiently processed. Because of the air pocket and the shape that can be pumped in this way, it is not suitable for electrodeposition coating. Therefore, it was not possible to perform electrodeposition coating of a metal product having a complicated shape from the viewpoint of the function of the coating material adapted to the purpose of use, and felt a great inconvenience in processing.

[0004]

According to the present invention, there is provided an electrodeposition coating apparatus which solves such inconveniences, and which can reliably coat even a complicated shape having an air pocket or a pumpable shape. It will not be provided.

In other words, rails are horizontally mounted in parallel on a long and narrow frame-shaped mounting frame supported by a column, and the second transmission chain is provided by a plurality of second elevating chains provided with one ends in long grooves provided in the rails. Elongate lifting frames are suspended at several points via the sprockets, and the rails and balance weights are connected by the first lifting / lowering chain that is linked by the lifting / lowering drive, and the upper and lower lifting frames A traveling roll is provided at a location, a traveling frame is hung on a lifting frame by the traveling roll, and is movable by a chain interlocking with a traveling driving device provided on the lifting frame, and is capable of being hooked. A pair of two hanger hooks that are integrated by connecting support pillars that protrude outward at the lower end with reinforcing materials, and a plurality of pairs are longitudinally hooked at appropriate positions on the bottom surface of the running frame Hang the body so that it is orthogonal, The hanger locking part provided with two locking bodies provided with locking parts of any cross-section that can be locked at the four corner upper ends of the hanger body having the It can be hung with a stationary body.

Also, frames are installed upright on both sides of a frame base provided with cushioning materials whose both ends are bent in a central lower surface, and the hanger body is rotated by a rotating shaft directly connected to a rotating sprocket .
The frame base is rotatably provided between the side portions so as not to hit the bottom of the hanger body , and is fitted to a clutch plate of a rotation drive device provided with a clutch plate which is horizontally moved by a cylinder in a rotation motor. The intermediate shaft for rotation provided with the clutch plate to be attached at one end is provided on the upper side of the rotating shaft, and the sprocket provided on the intermediate shaft for rotating and the rotating sprocket for the rotating shaft are connected by a chain to form the frame base. Rotation is possible, fixing grooves are provided at appropriate places on the lower surface of the receiving base that has a suitable groove and can be attached with the object to be coated, and can be transported by a forklift, and both ends of the receiving table and the frame base are connected with a coupling tool. It is detachable.

[0007]

The object to be coated is mounted on the pedestal, placed on the frame with a forklift or the like, and a hanger having the pedestal fixed to the frame with a connector is prepared and placed. After the preparation is completed, the rail is slowly moved to one side by lifting the balance weight via the first lifting / lowering chain and pulling by the weight of the lifting / lowering frame by the operation of the lifting / lowering driving device, and the lifting / lowering frame is moved. Lower down and stop. When the lowering of the elevating frame stops, the running frame is moved to one side along the elevating frame via the chain by the operation of the driving device for driving, and the hook of the hanger hook is provided below the prepared hanger engaging portion. Moves and stops. The rail is pulled via the first lifting chain again by the operation of the lifting driving device, and the lifting frame is pulled up by the second lifting chain.

[0008] At this time, the hanger hooking body is also the same, and the hooking body is fitted to the locking portion of the hanger, and the hanger fixing the object to be coated is lifted and stopped at a predetermined position. Next, the traveling frame is moved to the other side through the chain by the operation of the traveling drive device, and the hanger to be suspended is moved to the processing tank and stopped. Then, the lifting frame is lowered again by the operation of the lifting drive device, and the hanger is put into the processing tank. When the hanger enters the processing tank, the outer end of the locking body hits the upper end of the processing tank and stops lowering the hanger. Stops when there is no lock on the body.

At this time, the traveling drive device is operated to move the traveling frame in one direction so that the hooks of the adjacent hanger hooks are located below the hanger in the processing tank and the locking portions of the hanger prepared outside the processing tank. And the driving device for driving stops. By operating the lifting drive again, the hanger to which the next object is attached and the hanger which has been partially processed in the processing tank are simultaneously hooked by the hook and lifted and stopped. Next, the driving device for traveling is operated, and the hanger after the optional processing is moved to the next processing tank and the new hanger is moved to the first processing tank and stopped.

[0010] When the object to be coated is processed in the processing tank as described above, the rotating drive device operates when the object to be coated is moved down from the uppermost portion or ascended from the lowermost portion. Rotate the base by an appropriate angle and immerse the object to be mounted sideways in a state where buoyancy does not occur, rotate it upward as it descends, and rotate upward so that air does not accumulate in the object and air pockets do not occur. Various processing cannot be performed in a normal state. In the ascending process, the processing liquid is completely discharged from the object to be coated while leaving the processing tank from the upward state to the horizontal state before exiting the processing tank, and further downward by reversing the rotation of the rotation driving device. Move to processing step. In this way, the object to be coated is reversed from rollover by raising and lowering and horizontal movement of the traveling frame and rotation of the frame base, and by appropriately combining these operations, air pockets in the object are eliminated to completely discharge the processing liquid. The processing is performed one after another.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. In the drawing, reference numeral 1 denotes a long and narrow mounting frame composed of a vertical mounting member 2 and a horizontal mounting member 3, and auxiliary vertical mounting members 2a are provided between the horizontal mounting members 3 at appropriate intervals and parallel to the vertical mounting member 2. An auxiliary horizontal mounting member 3a is provided at an appropriate position inside the horizontal mounting member 3 in parallel with the horizontal mounting member 3, and the columns 4 and the auxiliary columns 5 are provided with the vertical mounting members 2 and the horizontal mounting members 3 corresponding to both ends of the auxiliary vertical mounting member 2a. It is provided below. Reference numeral 6 denotes a rail receiving roller supported by a bearing 7, and a plurality of rail receiving rollers are installed at appropriate positions on the upper surface of the auxiliary lateral mounting member 3a with the rail receiving roller 6 inside.

Numeral 8 denotes a prismatic rail, which has a plurality of long grooves 8a formed at appropriate positions and is mounted on rail receiving rollers 6 so as to be horizontally movable such that the long grooves 8a are vertical. Reference numeral 9 denotes the entire lifting drive device, 10 denotes a driving sprocket 10
This is a motor for elevating and lowering which is directly connected to the mounting member 1 and is provided on a receiving member 11 provided in parallel to the vertical mounting member 2 at an appropriate position between the auxiliary horizontal mounting members 3a at the end of the mounting frame 1. Reference numeral 12 denotes an elevating intermediate shaft provided with a driven sprocket 13, which is installed by a bearing 15 on an auxiliary receiving member 14 protruding from the lower surface of the vertical mounting member 2, and a first transmission sprocket 16 is installed at both ends. , Chain 17
Connects the driving sprocket 10a and the driven sprocket 13. Reference numeral 18 denotes a guide sprocket, which is provided below the first transmission sprocket 16.

A first elevating chain 19 has one end connected to the rail 8 and the other end connected to the balance weight 20 via the first transmission sprocket 16 and the guide sprocket 18. Reference numeral 21 denotes a second transmission sprocket supported by a bearing 22, which is installed in an appropriate position on the auxiliary lateral mounting member 3a in parallel with the rail receiving roller 6 so as to correspond to the long groove 8a. Reference numeral 23 denotes an elevating frame composed of a vertical frame 23a and a horizontal frame 23b, and auxiliary frames 23c are provided at a plurality of appropriate positions on the horizontal frame 23b. Reference numeral 24 denotes a second elevating chain, one end of which is connected to the end of the elongated groove 8a, the other end of which is connected to the upper surface of the auxiliary frame 23c via the second transmission sprocket 21, and the elevating frame 23 is moved by the horizontal movement of the rail 8. Up and down movement is possible. Reference numeral 25 denotes the entire driving device for driving. Reference numeral 26 denotes a driving motor to which a sprocket 26a is directly connected. The driving motor is installed on an auxiliary member 27 provided between the auxiliary frame 23c and the auxiliary frame 23d so that the axis is parallel to the auxiliary frame 23c. doing.

Reference numeral 28 denotes a traveling intermediate shaft provided with a driven sprocket 29.
c, and a third transmission sprocket 31 is provided at both ends.
And the driven sprocket 29 are connected. Reference numeral 33 denotes a guide sprocket, which is provided below the auxiliary member 27 by a bearing 34 in the same direction as the third transmission sprocket 31 and provided on the left and right sides of the third transmission sprocket 31. Reference numeral 35 denotes the entire traveling frame including the vertical members 36 and the horizontal members 37. The auxiliary horizontal members 37a are provided at appropriate positions parallel to the horizontal members 37, and the auxiliary vertical members 36a are provided at a plurality of locations at appropriate intervals. .

Numeral 38 denotes a traveling roll, which is supported by bearings 38a and is provided at a plurality of appropriate positions on the upper surface of the horizontal member 37 so that the traveling roll 38 can be supported outside by the horizontal frame 23b. The movement is free. 3
Reference numeral 9 denotes a traveling chain, which connects the third transmission sprocket 31 and the guide sprocket 33, and connects the ends thereof to auxiliary vertical members 36a, respectively. The movement is free. 4
Reference numeral 0 denotes a hanger hook, which is a horizontal frame 37 and an auxiliary horizontal frame 37 where the vertical frame 36 and the auxiliary vertical frame 36a intersect with the horizontal frame 37 and the auxiliary horizontal frame 37a.
a The support column 41 is hung opposite to the lower surface, the lower end of the corresponding support column 41 is connected by a reinforcing member 42, and a hooking member 43 of a suitable length having a triangular cross section is directed outward at the lower end of the support column 41. It is protruding.

Reference numeral 44 denotes the whole hanger, and 45 denotes the bottom 4
A hanger body having two surfaces 5a and two side portions 45b and reinforcing each corner and having a groove shape, wherein a locking body 46 provided with a locking portion 46a having a mountain-shaped cross section and an opening at the bottom is provided. Stop 4
The hook 6a is provided at the upper corners of the four corners so as to be perpendicular to the side portions 45b with the inner side 6a. Reference numeral 47 denotes a frame base in which steel materials are combined in a square shape. A buffer plate 47a having both ends bent in a curved shape is provided on the lower surface at the center, and a frame 47b is installed upright at both ends in parallel with the buffer plate 47a.
side 45b of the frame 47b at the rotating shaft 48 provided on the b
The frame 45 is rotatably supported so that the frame does not contact the bottom 45a . Reference numeral 49 denotes a receiving stand to which the object 63 can be attached, and a fixing member 49a is provided at an appropriate number of places on the lower surface so that it can be transported by a forklift or the like. It is attached at 50.

Reference numeral 51 denotes a side portion 45b at an appropriate position above the rotary shaft 48.
A rotating sprocket 54 provided on the rotating shaft 48, a rotating intermediate shaft provided between the sprockets 52 at both ends, a clutch plate 53 provided outside one of the sprockets 52.
And the sprocket 52 by a chain 55, and
7 can be freely rotated. 56 is high on both sides to degreasing
This is a processing tank in which water washing surface adjustment, film formation, water washing, pure water washing, and electrodeposition coating water washing are arranged in parallel, and provided below the hanger 44. Reference numeral 57 denotes a rotation driving device as a whole, and reference numeral 58 denotes a rotation motor, which is mounted on a reinforcing plate 59 provided at an appropriate position of the auxiliary vertical frame 36a, and is provided with a clutch which can be detachably attached to the clutch plate 53 by a cylinder 60. Board 61
Are linked. 64 is a guide rod for raising and lowering the frame 23 for raising and lowering, and is installed in parallel above the support column 4 and the auxiliary support column 5. Reference numeral 65 denotes a guide, and the horizontal frame 2
3b, one end thereof is slidably inserted into the guide rod 64, and guides the elevating frame 23 at the time of elevating so as not to swing. In addition, control of each part such as operation stop is performed by a limit switch or the like.

[0018]

Next, the operation will be described. After the main power supply is turned on to enable operation, the elevating motor 10 of the elevating drive unit 9 is operated to drive the first transmission sprocket 16 via the driving sprocket 10a, the chain 17, the driven sprocket 13 and the elevating intermediate shaft 12. , The balance weight 20 is pulled up by the first lifting / lowering chain 19, and the lifting / lowering frame 2 is moved through the second lifting / lowering chain 24.
The rail 8 is pulled and moved by the own weight of the frame 3 and the traveling frame 35, and the elevating frame 23 and the traveling frame 35 are slowly lowered to the lowest position, and the motor 10 is stopped.
When the traveling frame 35 descends to the lowest position, the traveling motor 26 of the traveling drive device 25 is operated, and the chain 3
2. Turn the third transmission sprocket 31 via the driven sprocket 29 and the running intermediate shaft 28 to
The traveling frame 35 is moved rightward in FIG. 1 to stop at a predetermined position, and the traveling motor 26 stops.

At this time, the object 63 is placed at another place.
The hanger 44 attached to the processing tank 56 is transported by a forklift or the like to a space 62 in front of the processing tank 56 (right side in FIG. 1), and the height of the hanging body 43 suspended in the traveling frame 35 that has stopped moving is vertical. Are positioned and provided so as to coincide with the vertical line. Then, the motor 10 is operated to rotate the first transmission sprocket 16 in the reverse direction, so that the first lifting chain 1
At 9, the rail 8 is pulled leftward by the rotating force and the weight of the balance weight 20, and the traveling frame 35 is raised via the second lifting cane 24. When the traveling frame 35 rises, the hanger hooking body 40 also rises, and the hooking body 43 hits the locking portion 46a of the hanger 44 that has been installed, so that the hooking hanger 44 rises to the upper part and the motor 1
0 stops.

During this ascent, the rotation driving device 57 is operated, the clutch plate 61 is fitted to the clutch plate 53 by the cylinder 60, and the rotation of the rotation motor 58 is transmitted to the rotation intermediate shaft 51. , A rotating shaft 48 via a sprocket 52, a chain 55, and a rotating sprocket 54.
Is turned, the frame base 47 to which the object 63 is fixed is turned by 90 ° from the lower position to be horizontal, and is further turned by 90 ° so that the upper position and the object 63 are inverted. Hanger 44
Then, the traveling motor 26 is operated again, the third transmission sprocket 31 is rotated in the reverse direction, the traveling frame 35 is pulled by the chain 39 to the left in FIG. 1, and the hanger 44 is placed on the processing tank 56. I do.

In the same manner as described above, the elevating motor 10 is operated to lower the traveling frame 35 and move the hanger 44 into the processing tank 5.
6 to perform predetermined processing. When the frame base 47 is rotated by the rotation driving device 57 and enters the processing tank 56 before the processing is performed in the processing tank 56, the object 63 is laid sideways and immersed in a state where buoyancy does not occur. Then, the air is sequentially turned upward to expel the air in the coating object 63 to eliminate the air pockets, reach the lowest position, and the processing is performed in a normal state where the coating object 63 is upward. When the object 63 falls in this manner, the outer end of the locking body 46 of the hanger 44 hits the upper end of the processing tank 56 to stop the lowering of the hanger 44. However, the hanger hooking body 40 is further lowered, so that the locking portion 46 is lowered.
The hook 43 is detached from the position a, and the hook by the hook 43 is eliminated. When the hanging by the hook 43 is stopped, the running frame 35 is moved rightward by the operation of the running driving device 25, and the hanger 44 is placed in the processing tank 56, and the hanger hook 40
Moves rightward, and the latching body 43 moves below the locking portion 46a and stops. Then, the hanger 44 in the processing tank 56 is moved up and down together with the next hanger 44 that is being prepared.
At the time of ascending by the operation of, each of the locking portions 46a is hooked by the latching body 43 to ascend again.

In the ascending process, the rotation driving device 5
At 7, the frame base 47 is rotated and the object to be coated is turned upward from the processing tank 56.
Until it exits, turn the processing solution downward from sideways to completely drain the processing solution and raise it when it rises. In this way, the frame base 47 is rotated while the traveling frame 35 moves downward, rightward, upward, and leftward, and the air and the processing liquid in the object 63 are completely discharged while repeating and appropriately combining these. The hanger 44 to which the article 63 is attached is moved to the left to perform predetermined processing in the processing tank 56.

[0023]

As described above, according to the present invention, in addition to lifting and lowering and horizontal movement, the object to be coated is inverted by rotation, so that the object is reliably driven out without accumulating air in the object to form an air pocket. In this way, immersion in the treatment tank can be performed smoothly without buoyancy by air, and various treatments such as electrodeposition coating or degreasing, rinsing, surface adjustment, coating, chemical conversion, pure water washing can be performed in the best condition. At the same time, after the completion of various treatments, the treatment liquid in the object to be coated is completely discharged and moved to the next step, so that mixing of the treatment liquids of the previous step and the next step is prevented, and replenishment and replacement of the treatment liquid are performed. Processing solution consumption by
The present invention has many advantages, such as being economical and having a wide range of use, because it is possible to treat a complicated object which cannot be electrodeposited in a good condition, and is extremely excellent in industrial use.

[Brief description of the drawings]

FIG. 1 is a front view in which a part of the present invention is omitted.

FIG. 2 is a plan view in which a part of the present invention is omitted.

FIG. 3 is an enlarged front view of the hanger of the present invention and a hanger elevating unit.

FIG. 4 is an enlarged right side view of the hanger of the present invention and a hanger elevating unit.

FIG. 5 is a front view of the traveling drive device of the present invention.

FIG. 6 is a plan view of the traveling drive device of the present invention.

FIG. 7 is a structural view showing a connection relationship between the lifting drive device of the present invention and a balance weight.

FIG. 8 is an operation state diagram of the lifting guide of the lifting frame according to the embodiment of the present invention.

FIG. 9 is an operation state diagram in which the traveling frame is lowered and horizontally moved in the embodiment of the present invention.

FIG. 10 is an operation state diagram in which, in the embodiment of the present invention, the traveling frame descends and moves horizontally, and then rises and horizontally moves in the opposite direction.

FIG. 11 is an operation state diagram in which an object to be coated is immersed in a processing tank in the example of the present invention.

FIG. 12 is an operation state diagram in which an object to be coated is sent to the next step in the embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 mounting frame 2 vertical mounting material 2 a auxiliary vertical mounting material 3 horizontal mounting material 3 a auxiliary horizontal mounting material 4 support 5 auxiliary support 6 rail receiving roller 7 bearing 8 rail 8 a long groove 9 elevating drive device 10 elevating motor 10 a driving sprocket 11 Bearing 12 Lifting intermediate shaft 13 Driven sprocket 14 Auxiliary receiving material 15 Bearing 16 First transmission sprocket 17 Chain 18 Guide sprocket 19 First lifting chain 20 Balance weight 21 Second transmission sprocket 22 Bearing 23 For lifting Frame 23a Vertical frame 23b Horizontal frame 23c Auxiliary frame 23d Auxiliary frame 24 Second elevating chain 25 Traveling drive 26 Traveling motor 26a Sprocket 27 Auxiliary material 28 Traveling intermediate shaft 29 Driven sprocket 30 Bearing 31 Third transmission Sprocket 32 Chain 33 Guide sprocket 34 Bearing 35 Travel frame 36 Vertical runout Auxiliary vertical frame 37 Horizontal frame 37a Auxiliary horizontal frame 38 Running roll 38a Bearing 39 Chain 40 Hanger hook 41 Support column 42 Reinforcement 43 Hanging body 44 Hanger 45 Hanger body 45a Bottom 45b Side 46 Locking body 46a Locking Part 47 Frame base 47a Buffer material 47b Frame 48 Rotating shaft 49 Receiver 49a Fixing material 50 Coupler 51 Intermediate shaft for rotation 52 Sprocket 53 Clutch plate 54 Sprocket for rotation 55 Chain 56 Processing tank 57 Driving device for rotation 58 Motor for rotation 59 Reinforcement plate 60 Cylinder 61 Clutch plate 62 Space 63 Workpiece 64 Guide rod 65 Guide

Claims (4)

(57) [Claims] 1. Rails 8 are juxtaposed horizontally so as to be horizontally movable on a long frame-shaped mounting frame 1 supported by columns 4, 5, and a lifting frame 23 is hung on the rails 8 at an appropriate number of places. The balance weight 20 is connected to one end of the rail 8 to maintain the balance of the rail 8, and the elongated frame-like traveling frame 35 is movably suspended from the elevating frame 23, and the hanging body 43 having an arbitrary cross section is moved to the lower end. A pair of two hanger hooks 40 that are integrally connected with a support pillar 41 projecting outward with a reinforcing member 42,
A plurality of pairs of hanging members 43 are suspended at appropriate positions on the lower surface of the traveling frame 35 so as to be orthogonal to the longitudinal direction, and at the upper ends of the four corners of the hanger body 45 composed of the bottom portion 45a and the side portions 45b, A locking member 46 of a hanger 44 provided with a pair of locking members 46 having locking portions 46a of an arbitrary cross-section that can be locked and provided with the locking portions 46a inside is a locking member 43.
An electrodeposition coating apparatus characterized in that it can be hooked up by a. 2. A hanger 44 is provided with a frame 47b installed upright on both sides of a frame base 47.
Between the side portions 45b provided so as to be orthogonal to the longitudinal direction of the bottom 4
The rotation shaft 48 is rotatable so that the frame 47 does not hit the frame 5a.
An electrodeposition coating apparatus characterized in that it is a hanger supporting the frame 47b. 3. A rotation intermediate shaft 5 provided with a clutch plate 53.
1 and a rotating shaft (48), wherein an intermittent rotation can be transmitted to the frame (47) by a rotation driving device (57) for transmitting rotation, which allows the clutch plate (53) and the clutch plate (61) to be freely engaged and disengaged by an arbitrary method. The hanger of the apparatus for electrodeposition coating according to 2. 4. A fixing member 49a is provided at an appropriate number of places on a lower surface of a receiving base 49 to which the object 63 can be attached, and the receiving base 49 is connected to the connecting tool 5.
3. A hanger for an electrodeposition coating apparatus according to claim 2, wherein said hanger is detachably provided on said frame base 47 at zero.