KR950012430B1 - Process for electrodepotion coating - Google Patents

Abstract

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Description

Electrodeposition coating method

1 is a perspective view showing a monorail general carriage supported on a bent portion of a monorail track and a hanger suspended from the monorail itself.

Fig. 2 is a perspective view from the rear side showing the loaded state of the electrodeposition coating basket.

3 is a perspective view showing the state of the treatment bath in the tank of the electrodeposition tank.

4 is a perspective view showing the overall overview of the electrodeposition coating device.

FIG. 5 is a front view showing a state of swinging a basket accommodated in a hanger in a tank of the treatment tank and immediately above it.

6A to 6E are schematic views showing a process of loading an electrodeposition coating basket.

7A to E are schematic views showing a step of removing the electrodeposition coating basket.

＊ Explanation of symbols for main parts of drawing

M: Monorail General Transport Y: Sobu Drying

B: Basket D ₁ , D ₂ : Electric hoist

W: Walk H: Hanger

Z _{1 to} Z ₁₂ : Treatment tanks G and K: Roller conveying apparatus

J ₁ , J ₂ : driven car E: locomotive

F ₁ , F ₂ , R ₁ , R ₂ : Rhode Chain 1: Monorail Orbit

2, 3: subrail 4: monorail car body

5, 6, 16, 21: Bracket 7: Drive motor

8: driving wheel 9: body frame

10: connector 11: electric motor

12: storage box 13: sensor

14: turn light 15: ceiling frame

17: support frame 18: support

19, 36: guide plate 20: support base

22: axis of rotation 23: support

24: guide pin 25: stopper member

26: metal net 27, 28: stray conveyor

29 to 31: control conveyor 32, 39: electric roller

33, 35: loading conveyor 34: drive motor

37, 38: unloading conveyor 40: carry-on conveyor

[Industrial use]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrodeposition coating method for controlling rocking in the tank and the ancestor of a treatment tank in which an electrodeposition coating basket containing automotive parts such as forging parts and casting parts is disposed in the order of electrodeposition coating.

[Prior art]

Conventionally, the inventors of the present invention disclose an appropriate electrodeposition coating basket when bathing a large amount of automotive parts such as forging parts and casting parts (hereinafter referred to as "work") in Japanese Patent Application Laid-Open No. 1-119695 or US Patent No. 4812211. And a large number of workpieces put in the basket are subjected to electrodeposition treatment for each basket, and then subjected to drying treatment to propose and implement an electrodeposition coating apparatus (hereinafter referred to as a basket electrodeposition coating apparatus). This is an electrodeposition coating apparatus comprising a combination of a plurality of treatment tanks disposed in accordance with the process steps of electrodeposition coating and a baking furnace of an electrodeposition-treated work, wherein the basket supports provided at the bottom of the treatment tank are freely swingable. A basket for electrodeposition coating is placed on the basket support, and a carrier tact mechanism consisting of a carrier beam mechanism freely moving forward and backward and an elevator beam mechanism freely moving up and down is installed on the upper part of the treatment tank. It provides a basket type electrodeposition coating device that can transfer and transfer the electrodeposition coating basket to the basket support, which is accommodated in the electrodeposition coating basket and provided to the treatment bath in large quantities at one time. While removing spots, is the treatment liquid in every corner of the electrodeposition coating basket? And so as to evenly spread the average, and that the coating film thickness uniformity of the deposition process on the workpiece, and further are so that the electrodeposition coating for this kind of forged or cast part can be much processing.

[Problem trying to solve the invention]

By the way, in the case of the prior art, the electrodeposition coating apparatus provided for the electrodeposition coating is provided by a carrier tact mechanism comprising a carrier beam mechanism capable of forward and backward movement and an elevator beam mechanism capable of lifting and lowering, which are formed on the upper portion of the treatment tank. The basket is conveyed by lifting the basket to the upper part of the tank as it is and transferring it to the next treatment tank.

Therefore, the treatment liquid of the previous treatment tank is buried into the next treatment tank, and the treatment liquid of the post-process is diluted with the treatment liquid of the pre-process, or the chemical liquid of the pre-treatment tank is mixed with the post-treatment liquid and contaminated. There has been a problem that the replenishment of the processing liquid and the updating of the processing liquid must be frequently performed. In particular, when a large amount of parts are contained in an electrodeposition coating basket or a large volume of parts is contained so that individual treatment tanks cannot be large, a large amount of processing liquid is consumed at each time of renewal. If it is an expensive treatment liquid, it becomes a problem that cannot be overlooked in terms of treatment cost.

On the other hand, in the recent manufacturing stages of automobiles and the like, attempts have been made to reduce the number of parts by simplifying parts composed of several kinds of parts into one part as possible, thereby reducing manufacturing costs. Therefore, the parts are formed in one piece having a complicated shape, and in particular, there is a tendency that the part shape of the bag structure for maintaining the required strength increases. The basket-type electrodeposition coating device which can cope with spotless treatment bath and electrodeposition bath by accommodating a component having such a complicated shape in the electrodeposition coating basket and swinging it inside the treatment tank is very effective. As the shape of the workpiece containing the enteric basket becomes more complicated or bagged, the treatment liquid of the previous treatment tank is buried in the next treatment tank so that the treatment liquid of the previous treatment tank is diluted with the previous treatment liquid even after a relatively short time, or the treatment tank of the previous treatment tank is large. The chemical liquid is mixed with the chemical liquid of the subsequent treatment tank to contaminate the subsequent treatment liquid, thereby increasing the frequency of replenishment of the treatment liquid and update of the treatment liquid.

[Means to solve the problem]

Therefore, in the present invention, in the electrodeposition coating method for bathing the work placed in the electrodeposition coating basket in a plurality of treatment tanks disposed in accordance with the order of electrodeposition coating, firstly, the electrodeposition coating basket hung hanging inside the treatment tank. The electrodeposition coating method, which was formed by shaking the inside of the tank and raising it to the upper portion of the treatment tank, rocking the electrodeposition coating basket at the ancestor section and causing the treatment liquid to flow down, and secondly, hanging it down inside the treatment tank. After the hanger was rocked in the tank for each electrodeposition coating basket contained in the hanger, the treatment bath was raised, and then the upper part of the treatment tank was raised to swing the hanger for each electrodeposition coating basket to provide the electrodeposition coating method. will be.

[Action]

Specifically, in the former case, the electrodeposition coating basket is suspended by a plurality of electric hoists supported by a self-propelled van or a towing van, and the lifting and lowering of the electric hoist is controlled to lift and move the electrodeposition coating basket. After letting go. By swinging the electrodeposition coating basket in the treatment tank and its ancestors in the front-rear direction, in the left-right direction, or in the front-rear and right-left direction, the workpiece placed in the basket for proper inclination, that is, the electrodeposition coating, is removed from the basket. By controlling the electrodeposition coating basket to be inclined alternately to an angle that does not protrude, the treatment bath or electrodeposition bath without spots in the tank is enabled, and the processing liquid bleeding process is performed by repeating swinging in the ancestor section. It accelerates quickly and prevents a process liquid from getting to the next process tank as much as possible.

In the latter case, a plurality of hangers containing a basket for electrodeposition coating are suspended by a plurality of electric hoists supported by a self-propelled transport vehicle or a towing transport vehicle, and the electric hoist is controlled to be rolled up or down to control the electrodeposition coating. An appropriate inclination angle of the electrodeposition coating basket is applied to each hanger by moving the entire hanger containing the basket up and down, rocking in and around the treatment tank in the front-rear direction, swinging in the left-right direction, or swinging in the front-rear and left-right directions. By counting to be inclined alternately to the island, the treatment bath and electrodeposition bath without spots in the tank can be made in the same manner as in the former case, and the processing liquid dripping process is promptly promoted by repeating the shaking in the ancestor section. The treatment liquid is prevented from getting into the treatment tank as much as possible.

EXAMPLE

First, the entire outline of the suspension monorail will be described with reference to FIGS. 1 to 3.

[Configuration of Monore General Train]

1 is a monorail trajectory in which a type I main lane is installed in the ceiling, and the subrails 2 and 3 are arranged in parallel with a space between the left and right positions thereof.

4 is a monorail vehicle body in which a frame is formed in the shape of a box, and a driven vehicle J ₁ , J which is supported by the monorail track 1 and is electrically guided to the front and rear of the upper center position of the vehicle body 4. ₂ ). These driven cars J ₁ and J ₂ are supported by the monorail track 1 at the front and rear upper ends of the left and right brackets 5 protrudingly spaced from the left and right, and the front and rear two electric cars a are guided. Two front and rear two electric cars b which are supported and guided by the rail end edges on the left and right sides of the monorail track 1 at both front and rear ends of the bracket 5 are supported by bearing.

6 is a bracket which protrudes in the left and right positions of the front and rear of the monorail vehicle body 4, and supports the electric vehicle c at the upper end thereof, respectively, and the four electric vehicles c are the subrails 2 and 3. By the electric guide to the bottom surface of the vehicle, the monorail vehicle body 4 at the time of oscillation of the monorail vehicle body 4 at the time of running, or the whole hanger H which accommodated the basket B for electrodeposition coating as described later. ) To prevent shaking in the front, rear, left and right directions. E is a locomotive that pulls (4) of the monorail body, 7 is a drive motor of the locomotive (E), and 8 is a drive wheel rotated by the drive motor (7) in FIG. It is pressed against the bottom surface of the rotary drive. In addition, the upper end of the body frame 9 of the locomotive E supports two railroad cars d, which are supported by the monorail track 1 and guided by electric power, and on the lower side, the left and right sides of the monorail track 1 are supported. The front and rear two electric vehicles e guided by the rail end are supported by the bearing, and the connector 10 for connecting both to the rear of the locomotive E and the front of the monorail vehicle 4 is shown in FIGS. As shown in FIG. 7, the self-propelled monorail general vehicle M which pulls the monorail body 4 along the monorail track 1 by the locomotive E is comprised.

[Configuration of Electric Hoist]

Z ₁ and Z ₂ are electric hoists fixed to the front and rear of the monorail car body 4, and are vertically spaced at right and left intervals by rotating the winding drum (not shown) with each electric motor 11. Wind up and down the installed lower chain (F ₁ , F ₂ ) (also with link chain or wire low) and rear lower chain (R ₁ , R ₂ ) (with rank chain or wire low). Adopt a freely controlled hoist electric hoist or engage the rod chains F ₁ , F ₂ , R ₁ , R ₂ , (which may be a link chain) as in the illustrated embodiment. By forward and reverse rotation (not shown) to each electric motor 11, it is free to wind up and down the front row chains F ₁ and F ₂ and the rear row chains R ₁ and R ₂ . Adopt electric hoist with hoist structure to control And there.

In the above case, two electric hoists D ₁ and D _{2 are} disposed and fixed to the front and the rear of the monorail body 4, but the two electric hoists D ₁ and D ₂ of the monorail body 4 are fixed. Exposed and fixed at both left and right positions, or four electric hoists D _{1 to} D ₄ (not shown) are disposed and fixed at the front, rear, left and right positions of the monorail car body 4, and individual electric hoists D _{1 to} D ₄ ) the rod chains (F ₁ , F ₂ , R ₁ , R ₂ ) are installed vertically from each other and the four electric hoists (D _{1 to} D ₄ ) are operated in synchronization, or independently operated. In addition, the front left and right rod chains (F ₁ , F ₂ ) and the rear right and left rod chains (R ₁ , R ₂ ) can also be configured to freely control.

12 is a storage box of the rod chains (F ₁ , F ₂ , R ₁ , R ₂ ), 13 is an anti-collision sense installed at the front end of the locomotive (E), 14 is a red turn attached to the lower end of the locomotive (E) And so on.

[Configuration of Hanger]

H is a hanger in which the bottom part and the front and rear parts are framed in an open state, and a rectangular ceiling frame 15 is composed of a frame at the upper end thereof, and the four front and rear left and right positions of the ceiling frame 15 are respectively located at four positions. The bracket 16 protrudes. The bracket 16 is provided with Lawrence de chain on the front (F _1, F _2), the hanger (H) in which the lower end is connected to each of the Lawrence de chain (R _1, R ₂₎ on the back of Lawrence de chain (F _1, F ₂ , R ₁ , R ₂ ) to hang in four places.

17 is a support frame in both the left and right positions fixed aberration in a lattice form at intervals back and forth from the left and right both sides of the ceiling frame 15, protruding the support 18 protruding from the lower end toward the inside, and the support 18 At the inner end of the basket (B), the guide plate 19 for placing the basket (B) and the two baskets (B) on the front or rear half of the hanger (H) stably or in the form of a half ( (Iii) A large receiving stand 20 is formed.

21 is a bracket protruding from the center of the ceiling frame 15 in the upper left and right positions, 22 is a rotating shaft for protruding the bracket 21, a number of later treatment tanks (Z ₁ ~ Z ₁₂ ) In particular, when the left and right ends of the hanger H are stably hung on the V-shaped receiving members 23 formed at the centers of the left and right positions of the electrodeposition tank Z ₈ , the pitch swings in the tank in the front and rear directions. It is supposed to function effectively. Thus, the direction of the two electric hoist (D _1, D ₂₎ to and disposed on both left and right positions of the monorail car body (4), the two electric hoist (D _1, D _2), right and left, the hanger (H) by controlling the ring to the swing roll into, or four electric hoist (D _1, D ₄₎ to the hanger (H) 4 gae suspended, the electric hoist (D ₁ ~D ₄₎ to control the right and left around the hanger (H) direction In the case of swinging freely, the hanging shaft 22 of the hanger H, the bracket 21, and the receiving member 23 formed in the electrodeposition tank Z ₈ become unnecessary.

24 is a guide pin protruding from the center upper part of the front and back position of the ceiling frame 15, and is a cylindrical shape fixed to the bottom surface of the front and rear of the monorail car body 4, The cross section shape the shape which turned the bowl upside down. The top stop of the in stopper member 25 is supported.

This is when driving the mono-rear general vehicle M. By pulling up the hanger H and attaching it vertically to the monorail car body 4, the stable running of the hanger H suspended from four places by the rod chains F ₁ , F ₂ , R ₁ , R ₂ , and the monorail car body ( We cope with planting of hanger (H) for 4). The basket B for electrodeposition coating (also referred to simply as a basket) used in the present invention is frame-shaped in the shape of a box with an upper opening, and a metal net made of X-band metal at the bottom of the box and the front, rear, left and right outer peripheries. (26) is fixed.

[Configuration of Electrodeposition Coating Device]

Next, based on FIG. 4, the whole outline is demonstrated to this apparatus, First, a pillar material. The frame (not shown) of this apparatus is comprised of steel frame materials, such as a beam beam and a purlin material, and the endless monorail track 1 is hypothesized by the long rectangular shape of the plane at the ceiling of the outer peripheral part of the frame, The monorail track 1 is subjected to a large number of self-propelled monorail general vehicle M (even a towing monole general vehicle). Y is a long bake-drying furnace disposed in the central portion of the whole apparatus, and has an opening (Y ₁ ) on one side and an opening (Y ₂ ) on the other side.

[Structure Conveyor Control Structure]

27 and 28 are strain conveyors parallel to the front and back positions of the floor on the front length side of the monorail track 1, that is, on the floor on which the monorail general transport vehicle M is empty and conveyed. The conveyor 27 has a long line configuration so that the baskets B can be carried in while stoking a plurality of baskets B, and a plurality of baskets B into which the workpieces W have been loaded are loaded and sequentially transferred. In addition, three delivery control conveyors 29 to 31 having a short conveyor length are provided in a caterpillar structure at the end of the long end of the long length conveyor conveyor 27, and each control conveyor 29 to 31 has a basket (B). Are transported one by one in turn. In addition, the inside of the conveyor conveyor 28 is a long line configuration to serve as the basket (B) containing the baking-dry product workpiece (W), and the stalk, and a plurality of baskets (B) to be carried By sending, the product workpiece W is cooled by air and carried out. K is a roller conveying apparatus which freely framed about 3 electric rollers 32, and puts the basket B sent out from the last delivery control conveyor 31 on the exposed electric roller 32. By carrying in and carrying out one by one, the conveyance direction of the basket B is changed to orthogonal direction.

[Configuration of Loading Conveyor]

33 is a loading conveyor for conveying the basket B horizontally, and is formed at the lower portion of the short side of the monorail track 1 and overlapped with the device 32 for carrying the roller in a plane orthogonal shape. In the loading position of the tip end of the loading conveyor 33, as shown in FIG. 2 and FIG. 6, a relatively short loading conveyor 35 acting as the driving motor 34 is provided and extended. The rear end of the conveyor 35 and the front end of the loading conveyor 33 are supported coaxially. And, in FIG. 2 and FIG. 6, 36 is a guide plate which is set in the front end part of the loading conveyor 33 and the four corners of the outer position of the loading conveyor 34, and hanger H which hangs from the monorail body 4 is carried out. Coping with positioning.

[Basket loading process]

First, the basket for electrodeposition coating B which is carried in this apparatus and contains the workpiece | work W, such as a forging part and a casting part, is placed in order at the beginning end part of the strainer conveyor 27, and a large amount of baskets are carried out. (B) is stacked on an elongated stir conveyor (27) and conveyed in the stoked state. B) Loading is controlled before loading. Therefore, a process of stacking two baskets B ₁ and B _{2 on} the hanger J of the mono-rear general carriage M will be described with reference to FIG. 6, and the first one sent out from the last control conveyor 31 will be described. The preceding basket B ₁ raises the roller-carrying apparatus G, and sends it to the exposed electric roller 32, and waits. On the other hand, as shown in FIG. 6 (a) to the position directly above the stacking position of the basket B, when the monorail general vehicle M rolls itself and stops, it detects it and the front of the monorail body 4 The reverse chain is operated in reverse with the electric hoist (D ₁ , D ₂ ) on the rear side and the reverse chain (F ₁ , F ₂ , R ₁ , R ₂ ) is rewound, which causes the rod chain (F ₁ , F _2). , R _1, R _2,) increased by knocking the hanger (H) is lowered while positioned in the guide plates, and finally the lower end is the loading of the sixth hanger (H, as the shown in Figure (b)) to the conveyor ( 34) and the lower part of the height position of the loading conveyor 35 which extended and installed similarly, it stops.

If it detects it, the roller G for conveying the edge part of the loading conveyor 33 first moves downward, and the leading basket B1 which is waiting on the moving roller 32 to the base end of the loading conveyor 33 is _first moved. After transfer. By operating the stacking conveyor 33, as shown in Fig. 6 (b), the basket is conveyed horizontally toward the stacking position of the preceding basket B ₁ , and the drive motor 34 is operated back and forth with it. As shown in FIG. 6 (c), the driving motor is moved to the loading conveyor 35 which extends to the front end of the loading conveyor 33, and the preceding basket B ₁ is fed to a predetermined position. 34 stops and the loading conveyor 35 stops, and the selection basket B1 is accommodated in the front part of the hanger H, and waits by this.

In the meantime, the second trailing basket B ₂ , which is transferred to the roller conveying device G from the rearmost control conveyor 31 and is waiting, has a base end portion of the loading conveyor 33 before and after the above process is completed. After being transported to and then conveyed laterally toward the distal end, the trailing basket B ₂ is transported to the rear half of the hanger H and accommodated as shown in FIG. As such, when two baskets B ₁ and B ₂ are transferred to the front and rear positions of the hanger H, they are sensed, and this time, the front and rear electric hoists D ₁ and D ₂ are synchronized with the electrostatic operation. Roll up the chains F ₁ , F ₂ , R ₁ , R ₂ , and pile up two baskets B ₁ , B ₂ at the front and rear positions of the hanger H, and then hang up to the vertically upward position. As shown in FIG. 6E, the guide pin 24 of the ceiling portion of the hanger H contacts the stopper member 25 of the monorail vehicle body 4 so that the hanger H is attached to the monorail vehicle body 4. Is cemented and supported.

When it detects it, the locomotive E drives and the monorail general transport vehicle M rolls itself to the upper part of the treatment tank Z ₁ according to the monorail track 1, and again to the loading position. As M) rolls itself in an empty state, the loading operation is repeatedly performed.

[Configuration of Treatment Tank and Process Bath Process]

Z _{1 to} Z ₁₂ are about 10 to 12 sets of treatment tanks which are installed in the lower portion of the rear side of the monorail track 1 in the order of electrodeposition coating, and hanger H of the monorail general vehicle M. The loaded basket (B) is hung and immersed in the tank of each treatment tank (Z7 ₂ Z ₁₂ ) for each hanger (H), or provided in the pre-treatment bath, the electrodeposition bath and the post-treatment bath of the electrodeposition coating by immersion treatment. This makes electrodeposition coating with respect to the workpiece | work W put in the basket B.

Explaining this in turn from the _first treatment tank Z ₁ according to the process procedure of electrodeposition treatment, Z ₁ is a preliminary degreasing bath, and a preliminary degreasing bath of the work W is performed by shower cleaning.

Z ₂ is a degreasing tank, and the work W is subjected to an alkali degreasing bath.

Z ₃ is the first washing tank, Z ₄ is the second washing tank, Z ₅ is the third washing tank, and the work W placed in the basket B is repeatedly immersed in dipping or washed with a shower.

Z ₈ is a pure water bath for washing the workpiece (W) with pure water, and Z ₇ is an air conditioning treatment for flowing down the treatment liquid, and a series of pretreatment baths for the workpiece (W) in the above treatment tanks (Z _{1 to} Z ₇ ) are individually The bath is treated for a set time of about 1 minute per treatment tanks Z _{1 to} Z ₇ .

Z ₈ is an electrodeposition tank of the pretreated work W. The electrodeposition treatment bath is performed by energizing the work W for about 4 minutes in the electrodeposition liquid. Z ₉ is the first after-wash tank, Z ₁₀ is the second after-wash tank, Z ₁₁ is the third after-wash tank, and the electrodeposited work W is repeatedly washed with water.

Z ₁₂ is an air conditioning treatment for flowing down the final treatment liquid, and a series of post-treatment baths for the workpieces W electrodeposited in the above treatment tanks Z _{9 to} Z ₁₂ are individually treated as in the case of the pretreatment baths. The bath is treated for a set time of about 1 minute per (Z _{9 to} Z ₁₂ ).

[Basket swinging process]

When the monorail general vehicle (N) reaches to the top of the best treatment tank (Z ₁ ) and stops, it detects it and the two electric hoists (D ₁ , D ₂ ) operate in reverse to synchronize the rod chain (F _1). , F ₂ , R ₁ , R ₂ ) is rewound so that the entire hanger H, which accommodates the basket B, moves down into the treatment tank Z ₁ . In the stage where the basket (B) is suspended in the tank, the front and rear two electric hoists (D ₁ , D ₂ ) are operated reversely, and one side of the electric hoist (D ₁ , D ₂ ) is stopped while the other rod chain is stopped. Winding up (F ₁ , F ₂ ), on the contrary, rewinding and strengthening the rod chain (F ₁ , F ₂ ) on the winding side, and at the same time, the rod chain (R ₁ ) on the other side. , R ₂ ) to control the reel, so that the basket B is placed in the basket at an appropriate inclination angle, that is, the electrodeposition coating basket for each hanger H, as shown in FIGS. 2 and 5. The pitching fluctuations are alternately inclined to an angle that does not protrude from.

In this manner, when the entire hanger H is pitched and swinged, the workpiece W accommodated in the basket B is electrically driven inside the basket B, or the receiving positions of the workpieces W are shifted so that the contact positions are shifted. By changing, the air pockets between the workpieces W are eliminated, and the process liquid evenly spreads to every corner of the basket B, whereby a preliminary degreasing bath without treatment spots is performed for about one minute. When the preliminary degreasing bath is finished, the electric hoists D ₁ and D ₂ are electrostatically operated at this time, and the rod chains F ₁ , F ₂ , R ₁ and R ₂ are wound up, and the treatment tank Z ₁ The hanger H is pulled up for each basket B just above the ancestors.

Thus, the oligonucleotide wound back electric hoist (D _1, D ₂₎ to thereby reverse operation alternately, the electric hoist (D _1, D ₂₎ Lawrence de chain (F _1, F ₂₎ stopping the one end of the holding of the other On the contrary, the hoist chain (F ₁ , F ₂ ) of the wound side is rewinded and strengthened, and at the same time, the electric hoist (R ₁ , R ₂ ) is wound up. By controlling the operation of D ₁ , D ₂ , as shown in FIG. 5, the entire hanger H is alternately inclined at each basket B to a proper inclination angle to cause pitching fluctuations. Thereby, the workpiece | work W accommodated in the basket B is rotated internally, or the contact position of each other is shifted by shifting a receiving position, and the workpiece | work W adheres mutually, or the workpiece | work W mutually flowing part of凹凸treatment liquid or the like into which make processing haenghayeojyeo effectively, thereby preventing a sense of burying of the processing solution to the next processing tank (Z _2).

After the flow of the processing liquid from the ancestor of the processing tank Z ₁ is completed, the electric hoists D ₁ and D ₂ are synchronously electrostatically operated, and the hanger H is pulled up to the monorail vehicle 4. after stable jijihan suspending, to just above the next treatment tank (Z ₂₎ of the shop itself rolling a monorail transport car (M), in just one step stopping on of the treatment tank (Z ₂₎ the same electric hoist and the By reversing (D ₁ , D ₂ ), the basket B is suspended in the tank for each hanger H, and then the swing control is repeatedly performed in the degreasing bath, and then pulled up to the ancestor part and hanger H again. Repeat the whole rocking control. The electrodeposition treatment bath is performed in the state of the electrodeposition tank Z ₈ as shown in FIG. 2 or FIG. 5, but the electrodeposition treatment bath is an individual treatment bath or post treatment in the pretreatment bath. Since the individual treatment bath in the bath is about 1 minute, it is set to a time of about 4 minutes, and in the case of the present embodiment, since the basket accommodated in the hanger is pitched in the front and rear directions, The hanger H, which is suspended in the tank by the electric hoists D ₁ and D ₂ , is stably supported at both centers of the left and right sides of the electrodeposition tank Z ₈ , and the time is longer than other treatment bath times. The swinging treatment bath required is performed. In this way, a large amount of work W placed in the basket B is repeatedly controlled by swinging the entire hanger H in the tanks of a plurality of processing tanks Z7 ₂ Z _{12 that} are installed directly on the monorail general vehicle M. ) the work (W) accommodated in the process by the spot becomes a uniform treatment bath is performed, in addition treatment ancestor portion of the crude (Z ₁ ~Z ₁₂₎ the hanger (H) repeating the full swing control not, the basket (B) for The flushing treatments from each other are effectively performed, so that burying of the processing liquid into the next treatment tank is prevented.

As described above, depending on the pretreatment bath of the electrodeposition coating, all the treatment baths of the electrodeposition treatment bath and the post-treatment bath, or the kind of the work W, the treatment bath is cut in a part of the pretreatment bath or a part of the post-treatment bath. When a series of electrodeposition coating processes are completed, the mono-rear general carriage M is driven again and rolls to the position where the two baskets B ₁ and B ₂ taken out by the hanger H are taken out.

[About the device for unloading the basket]

37 and 38 are two sets of unloading conveyors in which two baskets B ₁ and B ₂ after finishing baths are unloaded from the hanger H. The short side of the monorail track 1 is immediately at the unloading position. At the bottom, that is, the lift is freely configured at the position intersecting with the inlet (Y ₁ ) to the sinter drying furnace (Y), and the rear end of the unloading conveyor (37) in front of the ward and the front end of the unloading conveyor (38). Wealth is supported on the same axis. A roller transporting device for transporting the unloaded baskets B ₁ and B ₂ of K, comprising three or more electric rollers 39 orthogonally overlapped with the rear unloading conveyor 38. 40 is an import conveyor which transfers the basket B mounted on the roller conveying apparatus K to the delivery opening Y ₁ of the baking-drying furnace Y.

[Unloading process of basket]

When hanging supporting a monorail transport cars (M) is stopped directly above the loading position shown in the fourth degrees of claim 7 also (a) a front and rear two baskets (B _1, B ₂₎ accommodated in the hanger (H), at this time After the two unloading conveyors 37 and 38 which are successively installed move up and down, the back and forth baskets B ₁ and B ₂ are placed on the unloading conveyors 37 and 38, and then, in FIG. As shown in the figure, it is moved by lifting to a height position for releasing the holding state with the hanger H.

Upon detecting that, between the carriage monorail (M) is oscillated by the two baskets (B _1, B _2), the transferred yarn unloading conveyor (37,38), as shown in the Figure 7 (c), Hanger H passes through. Thereafter, the unloading conveyors 37 and 38 on which the baskets B ₁ and B ₂ are placed are moved downward to the floor. Then, the rear basket B ₂ is moved as shown in Fig. 7 (d) on the electric roller 39 of the roller conveying device K formed at the position of the rear unloading conveyor 38. By operating the electric roller 39, it is carried to the conveying conveyor 40 to the baking-drying furnace Y, and is carried in presbyopia. In addition, when the rear basket B ₂ is transferred to the carry-in conveyor 40, the unloading conveyors 37 and 38 are slightly pushed upwards, and the front unloading conveyor 37 is reversed at the step of detecting it. By activating, the front basket B ₁ placed thereon is retracted and replaced on the rear unloading conveyor 38, as shown in FIG. 7 (e), and again loaded on the unloading conveyors 37 and 38. It moves by placing on the electric roller 39 exposed by lowering the whole.

By operating the electric roller 39 again, the front basket B ₁ is transferred to the conveying conveyor 40 to the Y by firing drying and then carried into the presbyopia.

A conveyed to bring the conveyor 40 to the half-entrance (Y ₁₎ of a baking drying (Y) a basket (B) will rise elevators configured free spar from the inside position of the half-entrance (Y ₁₎ of a baking drying (Y) It is pulled up by the apparatus (not shown) to the upper part of the bake drying furnace Y, and transferred to the inside conveyor (not shown) constructed from the carry-in side of the bait part to the carrying out part, and then the bake dry. Provided for processing.

Thereafter, although not shown in FIG. 4, the basket-dried basket (B) is placed in a descending elevator apparatus (not shown) configured to freely raise and lower the inside of the outlet (Y ₂ ) of the baking tray (Y). It is lowered by a transfer conveyor (not shown) formed on the floor of the inlet (Y ₂ ) from the upper part of the baking oven (Y), and then pushed out of the furnace to freely load or unload the loading conveyor (33, 35). After carrying out the conveying apparatus (not shown) which the roller conveying apparatus G etc. combined, the basket B to be carried out is moved, and then conveyed horizontally, and finally, of the conveying conveyor 28 It is transferred to the proximal end and taken out as it is naturally cooled.

In this case, the self-propelled monorail general vehicle M having a structure for pulling the monorail vehicle body 4 to the locomotive E is used. However, the front and rear driven vehicles J ₁ and J _{2 of the} monorail vehicle body 4 are constructed. ), It may be a self-propelled monorail general vehicle M having a structure in which either front or rear is used as a driving car. In addition, the tow-type monorail general vehicle (M) having a structure to be towed by the endless conveyor chain (not shown) installed along the monorail track 1 or the endless installation according to the trolley track 1 is installed. a trolley body and to connect the same monorail car body (4) on the conveyor chain, it is also possible to drive the support hook-carrying trolley, which was refrigerated for electric hoists (B _1, B ₂₎ on the trolley body.

In addition, the electric hoist (D ₁ , D ₂ ) is stably hung and installed directly on the endless conveyor chain, and the rod chain (F ₁ , F ₂ , R ₁ , R of the electric hoist (D ₁ , D ₂ ) is installed. ₂ ) Attach the electrodeposition coating basket (B) directly to the lower end of the wire rope, etc., and freely hang the support, or use the rod chain (F ₁ , F ₂ , R ₁ , R ₂ ) or the wire rope to attach the basket (B). It may also be by a trolley-type towing vehicle (hereinafter referred to as a trolley carrier), which hangs a plurality of hangers (H) for accommodating).

[Effects of the Invention]

The present invention is the electrodeposition coating method for bathing the work placed in the electrodeposition coating basket in a plurality of treatment tanks disposed in accordance with the order of electrodeposition coating as described above, firstly, the electrodeposition degree suspended by the interior of the treatment tank The electrodeposition coating method is configured to swing the enteric basket in the tank and to raise the treatment bath, and then the electrodeposition coating method is configured to swing the electrodeposition basket from the ancestor section to flow down the treatment liquid. After rocking in the tank for each electrodeposition coating basket accommodated in the hanger, and then bathing the treatment bath, the electrodeposition coating method is configured so that the hanger is swinged up from the ancestor section to the electrodeposition coating basket for each electrodeposition coating to flow down the treatment liquid. The tanks of treatment tanks, regardless of the shape or structure of various forged parts and cast parts, etc. By shaking the electrodeposition coating basket at, the uniform treatment bath or electrodeposition treatment bath without spots on the large number of workpieces put in the basket is performed, and in the ancestor part of the treatment tank, the electrodeposition coating basket is accommodated in the basket. The treatment liquid flowing down from the workpieces is effectively performed to prevent the treatment liquid from being buried in the next treatment tank, thereby bringing about various effects such as greatly reducing the cost of the treatment bath.

Claims (6)

In the electrodeposition coating method in which the workpieces put in the electrodeposition coating basket are treated in a plurality of treatment tanks disposed in accordance with the order of electrodeposition coating, the electrodeposition coating basket suspended from the inside of the treatment tank is shaken and treated in the treatment tank. After bathing, the electrodeposition coating method is characterized in that the electrodeposition coating basket is shaken at the treatment tank ancestor to raise the treatment liquid and flow down the treatment tank. The electrodeposition coating basket is lifted and lowered by a plurality of electric hoists supported by a self-propelled van or a towing van, and the electric hoist is rolled up and down to control the basket for electrodeposition coating. The electrodeposition coating method of the electrodeposition coating basket in the processing tank and its upper side, rocking in the front-rear direction, in the left-right direction, or in the front-rear, left-right direction. The front and rear of the electrodeposition coating basket according to claim 1 or 2, wherein two to four electric hoists are installed in the self-propelled conveying vehicle or the towing conveying vehicle, and are installed vertically from the electric hoist. Electrodeposition coating method characterized in that the left and right positions are suspended in a plurality of positions. In the electrodeposition coating method in which the workpieces put in the electrodeposition coating basket are treated in a plurality of treatment tanks disposed in accordance with the order of electrodeposition coating, a hanger hung over the inside of the treatment tank is placed in each electrodeposition coating basket. And the hanger raised immediately above the treatment tank is swung in each of the electrodeposition coating baskets in the treatment tank and subjected to the treatment liquid flowing down after the treatment bath is shaken in the treatment tank. The hanger for accommodating the electrodeposition coating basket is suspended in a plurality of electric hoists supported by a self-propelled vehicle or a towing vehicle, and the electric hoist is wound up and down to accommodate the basket for electrodeposition coating. Electrodeposition characterized in that it moves up and down a hanger, or swings the hanger which accommodates the electrodeposition coating basket in and inside the said processing tank in the front-back direction, in the left-right direction, or in the front-back, left-right direction. How to paint. 6. The basket for electrodeposition coating according to claim 4 or 5, wherein two to four electric hoists are installed in the self-propelled conveying vehicle or the towing conveying vehicle, and are lowered from the electric hoist and installed vertically. Electrodeposition coating method characterized in that the front and rear left and right positions of the hanger to be suspended in a plurality of positions.