JP2942864B2 - Electrocoating equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention provides a plurality of transfer lines using a trolley conveyor, thereby enabling a large number of works, works of different types, works of different sizes, and the like. The present invention relates to an electrodeposition coating apparatus that dramatically improves the efficiency of electrodeposition processing.

(Prior Art) Conventionally, as disclosed in Japanese Patent Application Laid-Open No. 62-54097, the present inventor has arranged a trolley conveyor for intermittently transporting a work supported on a conveyor chain and an electrodeposition coating process sequence. Provided is an electrodeposition coating apparatus in which a processing tank group is installed on one or two or more elevating tables, which is a combination of a large number of processing tanks and a set of baking and drying furnaces for the electrodeposited workpiece. ing.

In this case, along with the conveyor rail fixedly configured at an appropriate height position, the trolley conveyor is endlessly configured so as to be rolled and guided and circulated, and at appropriate intervals on the load hanging bracket of the conveyor chain. A series of electrodeposition processes such as pre-processing, electrodeposition, baking and drying for relatively small parts can be performed by moving the processing tank group installed on the lifting table directly below the suspended work to the suspended work. We are trying to do it efficiently.

(Problems to be Solved by the Invention) However, when a relatively large work is to be targeted, the size of each processing tank must be increased accordingly. Weight increase.

Also, when pre-treating, electrodepositing, or post-treating a work in an individual processing tank, the larger the work, the larger the up and down strokes of the work need to be taken. In addition, the size of the lifting device for driving the lifting table must be significantly increased, and the driving force thereof must be greatly increased.

Thus, for the work suspended on the trolley conveyor,
It is difficult to say that moving the processing tank group, which has significantly increased in weight, with a large stroke in the vertical direction is necessarily excellent in terms of equipment.

Therefore, the present inventor has set the processing tank group itself in a stationary state in a stationary state, but pre-processes the workpiece in the processing tank group, performs the electrodeposition process, and performs the post-processing. The focus was on making it possible to move up and down the entire work stopped immediately above and along with the trolley conveyor configured immediately above.

For this purpose, the end of the conveyor rail (loading side rail) that loads the work into the processing tank at the earliest position, and the tip of the conveyor rail (elevable rail supported vertically) that is located directly above the processing tank group. While maintaining the rolling guide function of the conveyor chain between the end of the elevating rail and the tip of the conveyor rail (unloading side rail) for unloading the work to the baking / drying furnace in the subsequent process. Thus, a need has arisen for a rail structure capable of freely changing the height with an appropriate stroke in the vertical direction.

In view of the above, the present inventor has disclosed in the specification and drawings of Japanese Patent Application No. 1-185660 (filed on Jul. 18, 2001) that the present invention is capable of smoothly responding to a change in the height of the lift rail at the above-described location. We have invented several types of flexible rails, which can be referred to as free rails, and electrodeposition coating equipment incorporating them.

In this way, by incorporating the flexible rail into the transport line of the trolley conveyor, and by configuring the conveyor rail positioned directly above the processing tank group so as to be able to move up and down, the capacity of each processing tank can be increased, Although it has been made possible to cope with an increase in the size of the work, in the case of the above-mentioned prior application, only a combination of a trolley conveyor, a processing tank group, and a baking / drying furnace is configured.

However, in the production lines and parts processing lines for mechanical parts, electric parts, and other various parts, workpieces with different types of parts, workpieces with different structures, and workpieces with different sizes, etc., simultaneously progress. It is desired that the work efficiency of the electrodeposition process be dramatically improved even when the work is created or processed, or the work is of the same kind.

However, for electrodeposition treatment per tank, usually 3 to 4
Since a processing time of about a minute is required, if the trolley conveyor is a single line, the processing capacity is naturally limited.

Therefore, in order to more than double the processing capacity of the electrodeposition process, a set of a trolley conveyor, a series of processing tanks for the electrodeposition process, and a baking / drying furnace is installed on a production line for mechanical parts, electrical parts, and various other parts. And it is required to provide equipment independently for each processing line.

However, installing processing tanks and baking / drying furnaces for each production line not only requires a large installation space, but also increases the cost of the equipment. As a result, the capital investment effect is impaired.

(Problems to be Solved by the Invention) Therefore, in the present invention, first, in order to solve the above-mentioned problems, first, a conveyor chain is inserted into the conveyor rail K, and a work is inserted into the conveyor chain. a trolley conveyor T which conveys intermittently by suspending the is W, the workpiece W to be carried in the trolley conveyor T, consists of a large number of treatment tank D ₁ to D ₁₄ Metropolitan for processing electrodeposition according required sequence of steps electrodeposition in wearing coating apparatus, the conveying line L ₁ ~L ₃ of the trolley conveyor T plurality of, among them, a series of processing tanks D ₁ to D ₁₄
Straight conveyor rail K ₂ located on the upper portion configured to move up and down, the flexible rail F _1, F ₂ linked to front and rear end portions of the lifting rail K ₂ is configured and made electrodeposition coating so as to be bent in They provided the equipment.

Second, a trolley conveyor T that inserts a conveyor chain through the conveyor rail K, suspends the work W on the conveyor chain, and intermittently conveys the work W, and a work W that is conveyed by the trolley conveyor T, a number of processing tanks D ₁ to D ₁₄ to process electrodeposition according required process sequence, in made electrodeposition coating device and a baking and drying oven Y electrodeposition treated workpiece W, conveying line L ₁ ~ of the trolley conveyor T the entire L ₃ and a plurality of, among them, a plurality of conveyor rails K ₂ located right above the series of processing tanks D ₁ to D ₁₄ configured to move up and down, front and rear end portions of the lifting rail K ₂ The flexible rails F ₁ and F ₂ connected to each other are configured to be bent, and the plurality of transport lines L _{1 to} L ₃ described above are also configured to extend into one baking / drying furnace Y. Is also provided.

(Regarding Flexible Rail) First, prior to describing the electrodeposition coating apparatus according to the present invention, a flexible rail F constituting a main part thereof will be described with reference to FIG. 9 and subsequent drawings.

9 to 14, R, R _{0 to} R _n are rail pieces cut into relatively short lengths,
The height position of about one to 3 of the total height lower quarter of the R ₀ to R _n, and setting the folding reference line X-X of the flexible rails F.

1, 1a is an obtuse (or arcuate) inflection portion that changes the inclination gradient θ toward the upper side and the lower side.
In the case of FIG. 10 (a) rail pieces R ₁ of the intermediate portion shown in to R _n-1 (except for the distal and proximal ends) are curved portion in the front and rear end portions of the folding reference line X-X 1, 1a is formed, whereas in the case of the rail pieces R ₀ and R _{n at} the distal end and the base end, as shown in FIGS. 10 (c) and (d), the bending reference line XX It is formed at one of the front and rear ends.

Reference numerals 2, 2a _denote upper tapered end surfaces formed on the upper side of the inflection portions 1, 1a in the rail pieces _{R0 to} Rn.
It is cut off in a tapered shape at an inclination angle θ of about degrees.

Reference numerals 3 and 3a denote lower tapered end surfaces formed on the lower side of the inflection portions 1 and 1a, which are cut off diagonally downward at an inclination angle θ of about 4 degrees.

S, S ₀ to S _n is a rail piece R, side plates fixed to right and left side surfaces of the R ₀ to R _n, of which, the middle portion side plate S ₁ ~S _n-1 and the intermediate portion rail The pieces R _{1 to} R _n-1 are formed to have substantially the same length, and are _{one -} fifth to six times the width of the side plates S _{1 to} S _{n-1 with} respect to the intermediate rail pieces R _{1 to} R _n-1 . 1 /
Rail piece R ₁ 〜
R _n-1 is welded.

4,4a is a inflection portion of the side plate S ₀ to S _n, when the middle portion of the side plate S ₁ ~S _n-1 is folded reference line X substantially bisecting them up and down is formed on the front and rear ends of the -X, also in the case of the side plate S _0, S _n of the distal end and a proximal end is formed at one end either before or after.

Reference numerals 5, 5a denote upper tapered end faces formed in a tapered shape on the upper side of the inflection portions 4, 4a, which are cut off obliquely upward at an inclination angle θ of about 4 degrees.

Reference numerals 6 and 6a denote upper tapered end surfaces formed in a tapered shape on the lower side of the inflection portions 4, 4a, and are cut off diagonally downward at an inclination angle θ of about 4 degrees.

7 is a side plate except for the side plate S _n of the base end portion
A S ₀ ~S _n-1 shaft for hole formed in the rail piece
On a line Z-Z connecting the rear inflection portions 1a of _{R0 to} Rn _-1 to the left and right, 1/5 to 1/6 of the plate width is shifted toward the rear on the bending reference line XX of the side plate S. An opening is formed at a position where a distance e of about one-half enters inside.

8 is the side plate excluding the side plate S ₀ at the tip
Screw holes formed in S _{1 to} S _n and side plates S ₁ to
And two front and rear places on folding reference line X-X of the front position of S _n, are formed in a total of four locations of the upper and lower two positions of the bisector.

P, P ₁ ~P _n is adjacent side plate S, a connecting plate for connecting the S ₀ to S _n, the intermediate portion side plate S ₁ to S
_n-1 and the same side plate S ₁ -S
against _n-1, 5 of the connecting plate P ₁ to P _n width before direction
It is arranged in a state in which about twice the distance e of about 1/6 to 1/6 is inconsistent.

9,9a is a inflection portion of the connecting plate P ₁ to P _n, folding reference line substantially bisecting the connecting plate P ₁ to P _n in the vertical X-
It is formed on both front and rear ends on X.

Reference numerals 10 and 10a denote upper tapered end surfaces formed in a tapered shape on the upper side of the inflection portions 9, 9a, and are cut off obliquely upward at an inclination angle θ of about 4 degrees.

11, 11a are lower tapered end faces formed in a tapered shape below the inflection portions 9, 9a, and are cut off obliquely downward at an inclination angle θ of about 4 degrees.

12 connecting plate P ₁ to P a _n the formed through a shaft hole, connecting plate P ₁ to P _n folding reference line X-X of the front near 1-6 fifth of the plate width of the An opening is formed at an inner position at a distance e of about one-half and on a line Z-Z connecting the front end inflection portions 1 of the rail pieces R _{1 to} R _n to the left and right.

13 is a side plate except for the side plate S _n of the base end portion
A support shaft for pivotally connecting S _{1 to} S _n-1 and connection plates P _{1 to} P _n, and a small-diameter side 13a at the end thereof is connected to a through hole 12 of the connection plate S.
Fitted and fixed by welding to, and pivot settings by fitted the large-diameter 13b of the base end portion to the through hole 7 of the side plate S ₀ ~S _n-1.

14 is a through hole for inserting a bolt, and is a connection plate S ₁ to
And two front and rear places on folding reference line X-X of the rear side of the S _n, are formed in a total of four locations of the upper and lower two positions of the bisector.

15 attachment bolt, 16 is a washer, connected to the threaded hole 8 of the side plate S ₁ to S _n by these things plate S ₁ to S _n
To secure.

Incidentally, 17 is a vertical end surface obtained by cutting off substantially vertically to the front end of the rail pieces R ₀ of the distal end portion, to the vertical end face 17 is butted in the vertical end portion of one of the conveyor rails K _1.

18 is a vertical end surface obtained by cutting off substantially vertically the front upper portion of the side plate S ₀ of the distal end portion.

19 is a vertical end surface obtained by cutting off substantially vertically the rear end portion of the rail piece R _n of the base end portion, the end of the other conveyor rail K ₂ is butted to the vertical end surface 19.

20 is a vertical end surface 20 and cut off the rear end upper portion of the side plate S _n of the base end portion substantially vertically.

Therefore, with the intermediate portion of the rail piece R ₁ ~R _n-1 to the middle portion of the side plate S ₁ to S _n rail member formed of a fixed to continuously provided in the longitudinal direction, to the proximal end the distal end the rail pieces R _0, the R _n to the side plate S _0, S _n arranged a rail member for fixing the ends, connected between each other of the side plate S ₀ to S _n adjacent the these things plate passing insert the P ₁ ~P _n to pivot set support.

In this case, a small diameter side 13a of the connecting plate P ₁ supporting shaft 13 fitted inserted in to P _n holes 12 of, in advance welding, the large diameter side 13b
Into the through holes 7 of the side plates S _{0 to} S _n−1 ,
Connected to the threaded hole 8 of the side plate S ₁ to S _n plate P ₁ to P _n
The mounting bolt 15 is screwed and fixed with the through hole 14 facing.

As a result, the flexible rail F, which constitutes one of the main parts of the present invention, is assembled so as to be freely bent as shown in FIG.

(Flexible action of the rail) and Thus, by fixing one end portion of the flexible rail F, when the lift moves the other end portion in the vertical direction, the side plates S ₀ of the distal end portion and the rear end portion with it, S _n with rails Peace R
_0, except for R _n, rail pieces R ₁ ~R _n-1 with the side plate S ₁ ~S _n-1 and the connecting plate are rail members of the intermediate section
P _{1 to} P _n are gradually bent, and in particular, as shown in FIG. 13, adjacent rail pieces R ₀ , R ₁ , R ₂ , R located near the front end and the rear end of the flexible rail F. ₃・ ・ ・ R _n-3 , R
_{n-2, R n-1} , before and after the tapered end surface 2,2a of R _n, one of 3,3a upper side or the lower side of abut, likewise tip toward the rear end side of the flexible rail F Side plates S ₀ , S ₁ , S ₂ , S ₃ ... S _n-3 , S _n-2 , S _n-1 ,
Front and rear tapered end surface 5,5a of S _n, either the upper side or the lower side of 6,6a are matched, further, adjacent connecting plates located at the distal end toward the rear end side of the flexible rail F P ₁ , P ₂ , P ₃ ... Either the upper or lower side of the tapered end faces 10, 10a, 11, 11a before and after P _n-2 , P _n-1 , P _n are properly abutted. In the middle portion of the flexible rail F except for the positions near the front end and the rear end, these rail components are bent back and forth with a slight inclined gap therebetween. F
, An appropriate stroke in the vertical direction is secured.

Usually, a conveyor chain such as a conveyor chain with side rollers or a universal chain is inserted through the flexible rail F and guided.
The guide rollers G of the conveyor chain (shown in FIG. 11) on to smoothly rolling guide, the gap more than necessary in the lower part of the mutual rail pieces R ₀ to R _n adjacent the flexible rail F is formed Is not preferred.

In order to prevent this, a folding reference line X-X of the rail pieces R ₀ to R _n, lower position including the center position bisecting the rail piece R ₀ to R _n vertically, specifically , Rail piece
Set R ₀ to R height of about one to 3 of the total height lower fourth of the _n, also, inflection 1 on the folding reference line X-X,
The upper side and the lower side of 1a are set to an inclination gradient θ of about 4 degrees.

In the case of the (Modification of the flexible rails) is to all rail pieces R ₀ to R _n and the side plate S ₀ to S _n and the connecting plate P ₁ to P _n consisting of the rail member, an appropriate tilt Tapered end faces 2, 2a, 3, 3 with gradient θ
a, 5, 5a, 6, 6a, 10, 10a, was formed a 11, 11a, when the weight of the object to be transported is such that a relatively lightweight, rail pieces R ₀ to R _n and the side plate connected to the S ₀ ~S _n plate P ₁
Of rail member consisting of a to P _n, either one or two
The above constituent members are provided with tapered end surfaces 2, 2 having an appropriate inclination gradient θ.
a, 3, 3a, 5, 5a, 6, 6a, 10, 10a, 11, 11a may be used as the flexible rail F.

FIG. 13 shows the stroke state when the conveyor rails K ₁ and K ₂ connected to the front and rear ends of the flexible rail F are relatively moved up and down, for convenience. conveyor rail K ₂ in the vertical direction to lift the moving rail (hereinafter, simply referred to as lifting rails), and the conveyor rail K ₁ at its front and rear ends, K ₃ (hereinafter, referred to while the carry-in side rail K _1, while the carry-out side rail K ₃
Illustrates the moving state of the case of fixing, the vertical direction of the loading side of the flexible rail F ₁ and the carry-out side of the flexible rail F ₂ a) of.

(About the electrodeposition coating apparatus) Next, the flexible rails F, F ₁ , F
₂ for automotive parts, electrical parts, and other various workpieces W
Is subjected to electrodeposition coating through required pretreatment bath steps such as alkali degreasing, pickling, water washing, electrolytic degreasing, etc., and is further combined with a series of electrodeposition coating apparatuses that are baked and dried through a post-treatment bath step. Will be described with reference to the accompanying drawings.

(First Embodiment) First, an overall outline of a triple-type electrodeposition coating apparatus in which three trolley conveyors T are configured in a line is shown in FIGS. 1 to 6.
Description will be made based on the drawings.

H is the main building of the electrodeposition coating apparatus,
The frame is formed in a box frame shape in the longitudinal direction by a steel structure material such as a girder material.

The main building H is a front building H ₁ of the front of the apparatus portions partitioned formed in three rows in the longitudinal direction, device central portion of the central building H ₂
When made from the back side building H ₃ Metropolitan device back part.

D ₁ to D ₁₄ 14 is a plurality of the processing tank which is installed on the base frame 21 of the main building H, according to the process sequence of the electrodeposition coating
Treatment tank D ₁ to D ₁₄ of about vat, are continuously arranged at a proper interval in the lateral width direction of the body building H.

Y is a baking drying furnace for drying baking the workpiece W treated electrodeposition, the dry building H ₄ thereunder, without hot air generator furnace and hot-air circulating fan and deodorization apparatus or the like (shown for baking and drying ). In the case of this embodiment,
The entrance / exit 22 of the work W to the baking / drying furnace Y has the same structure.

T is a trolley conveyor in which _three transport lines L _{1 to} L ₃ are line-structured at appropriate heights, and each is loaded at a loading position I _{1 to} I ₃ on the front side of the main building H. The workpieces W ₁ , W ₂ , and W ₃ are sent to one baking / drying oven Y disposed on the rear side of the main building H via the central position of each of the divided buildings H _{1 to} H _3. After being turned back in the back of the baking / drying oven Y, it is again carried out from the entrance / exit 22 of the baking / drying oven Y, passes through the front and back portions of the main building H, and is unloaded at the front side thereof. position O ₁ ~ O ₃ are laid out down loading the workpiece W _1, W _2, W ₃ in.

The trolley conveyor T is mounted on a conveyor rail K having a downward U-shaped, concave or C-shaped steel section, and a guide roller G.
A conveyor chain (not shown) is inserted through and supported by the conveyor chain, and hanging metal fittings E are formed at appropriate intervals on the conveyor chain, and the works W ₁ , W ₂ , W suspended from the hanging metal fittings E are supported. _Three
Are independently operated by trolley drive devices N _{1 to} N ₃ provided for each of the individual transfer lines L _{1 to} L ₃ , and are intermittently circulated.

Usually, this type of trolley conveyor T is usually a straight straight rail, a corner rail curved at 45 degrees or 90 degrees, or a concave surface whose upper surface is bent at 45 degrees or 30 degrees. By appropriately combining conveyor rails K such as rails and conversely, convex rails whose lower surface is bent at 45 degrees or 30 degrees, etc.
It is configured on an endless conveyor rail K.

In FIG. 1, the conveyor rail having a 45-degree upward slope is represented by U, and the conveyor rail having a 45-degree downward slope is represented by V.

Next, the configuration of the main building H shown in FIG.
Reference numeral 23 denotes four rows of lower beams laid in the longitudinal direction at the lower end of the main body building H. A base frame 21 is formed above the lower beams, and the base frame 21 has a large number of processing tanks D _{1 to} D. ₁₄ are arranged in a horizontal series at appropriate intervals.

If described with the process sequence of the number of processing tanks D ₁ to D ₁₄ the electrodeposition process, D ₁ is the first degreasing bath preliminary degreasing bath of the work W ₁ to _W-3 by the nozzle washing or shower cleaning, D ₂ on the second degreasing bath of performing alkali degreasing bath dipping the workpiece W ₁ to _W-3, D ₃ is first washing tank for washing it, D ₄ is obtained by washing with water dipping again the processing tank D ₄ second washing tank to a workpiece W ₁ to _W-3 to the nozzle cleaning or shower cleaning when pulling from, D ₅ is adjusting tank to perform surface conditioning of the workpiece W ₁ ~W _3, D ₆ is zinc phosphate treatment it Kasei Coating tank, D ₇ , D
₈ the third washing tank and a fourth water washing tank repeating washing again, D ₉ the fifth washing tank for washing the workpiece W ₁ to _W-3 with pure water, an empty tank D ₁₀ is to outright dripping it, pretreatment bath is performed on the workpiece W ₁ to _W-3 by treatment bath D ₁ to D ₁₀ of these things.

D ₁₁ is the electrodeposition bath to perform electrodeposition bath of the work W ₁ to _W-3 were pretreated.

D ₁₂ is on that dipping the workpiece W ₁ to _W-3 treated electrodeposition, first washed with water tank for the filtrate washed with water by the nozzle washing or shower cleaning, D _13, D ₁₄ after second repeating filtrate washed with water washing Tanks and a third post-washing tank, and these processing tanks D _{11 to} D ₁₄
The post-processing baths of the work W ₁ to _W-3 and electrodeposition bath of the work W ₁ to _W-3, was treated electrodeposition is performed.

Among the processing tanks D _{1 to} D ₁₄ , a first degreasing tank D ₁ and a second degreasing tank
D ₂ and conversion coating tank D ₆ and the electrodeposition tank D ₁₁ and the first post-rinsing tank D _12, the second
The post-water washing tank D ₁₃ is the fourth congestion 24 to the processing tank body of these things, as shown in FIG. Are sectioned formed at the partition plate 25,
The processing liquid Q overflowing from the main tank side to the sub-tank 25 side in each of the processing tanks D ₁ , D ₂ , D ₆ , D _{11 to} D ₁₃ is passed through a circulation pump and a filter (not shown). The piping is configured to circulate.

27 is a top mast and a lower mast launched to the lower beam 23, the front side building H _1, the central building H _2, a body building H consisting rear side building H _3, the lateral width direction and the longitudinal longitudinally It is erected to support the compartment.

Reference numeral 28 denotes an intermediate beam that is formed by overlapping the upper end of the lower mast 27 and the lower end of the upper mast 26, 29 denotes an upper beam that is provided in the upper end of the upper mast 26 in the longitudinal direction, and 30 denotes an upper beam 29.
Upper digit and digit set in juxtaposed state in the lateral width direction of 31 to the left and right positions on both sides of the upper girder 30 of the central building H _2, a ceiling beam beam set in juxtaposition state in the longitudinal direction.

32 is a lifting frame elongated in plan ladder, the central portion of the lower surface of the lift frame 32 is fixed to the lifting rail K ₂ in the longitudinal direction.

Reference numeral 33 denotes an elevating girder which is fixed to the upper part of the elevating frame 32 by extending in the left and right width direction and extending and fixed.The guide rollers 34 are formed at both ends thereof, whereby the elevating girder 33 is rolled and guided by the upper mast 26. To move up and down.

Reference numeral 35 denotes a horizontal girder extending in the left-right width direction at a position above the center of both front and rear ends of the main body building H, and 36 denotes a mounting bracket fixed to the center bottom of the horizontal girder 35. side freight S ₀ of the distal end portion of the rail F ₁ is fixed and supported, and, loading end of the carrying rail K ₁ to the side plate S ₀ of the distal end portion, i.e., it is fixed by abutting the rear end portion ing.

Also, this rail piece R _n of the rear end portion in the carry-in side of the flexible rail F _1, the front end of the lifting rail K ₂ is connected fixedly abut. Conversely, the rear side of the body building H, the A in the front and rear symmetrical, or, a flexible rail F ₂ of unloading side is attached in the same direction.

37 is a rotary shaft passed pointing in the longitudinal direction, and the bearing support on the outside position of the upper girder 30 on the front side building H ₁ and the back side the building H _3.

38 is a pair of double sprockets penetrating and fixed to a rotating shaft 37, and 39 is a bearing supported at a position inside the upper girder 30.
It is a body guide sprocket.

40 and 40A are suspension chains, of which one suspension chain 40 has one end connected and fixed to an inner position 33A of a lifting girder 33, and is hung on a guide sprocket 39 in a vertically upper part thereof. The double sprocket 38 is suspended over one end thereof, and a counterweight 41 whose weight is adjustable is suspended from the lower end thereof.

In addition, the other suspension chain 40A is connected and fixed at one end thereof to the outer position 33B of the lifting girder 33, and is hung on the other of the double sprockets 38 in the vertically upper part, and is formed to hang down.
The lower end is connected and fixed to the upper end of the counterweight 41.

Reference numeral 42 denotes a storage cylinder for storing the counterweight 41 so as to be able to move in and out, and stands upright along the lower mast 27.

M ₁ and M ₃ are forward and reverse rotating drive motors installed on the upper girders 30 of the front building H ₁ and the back building H ₃ , and 43 is a drive motor
A drive sprocket fitted and fixed to the output shafts of M ₁ and M ₃ , a driven sprocket 44 fitted and fixed to the rotating shaft 37, a drive chain 45 wound and supported on the drive sprocket 43 and the driven sprocket 44, of the motor drive device by the lifting girder 33, lifting frame 32, and overall the lifting rail K _2, the workpiece W _1, W ₃ which is suspended to the conveyor chain, even, carry-in side which is suspended in front and rear end portions of the body building H of Fukishiburureru F ₁
And allowed to move up and down the entire flexible rail F ₂ of the carry-out side.

The drive motors M ₁ and M ₃ , the counterweight 41, and the like constitute a lift drive device for a lift rail K ₂ framed in the front building H ₁ and the back building H ₃ .

46 is a long walking beam of I-shaped cross section which is laid down on top of the ceiling beam 31 of the left and right positions on both sides of the central building H _2, it is configured to move forward and backward in the front-rear direction.

47 is a rotary shaft passed plugged the lateral width direction vertically upward section of the elevator spar 33, bearing support and the left and right end portions on the left and right positions on both sides of the ceiling beam 31 of the central building H _2, the rotary shaft 47
Guide sprockets 48, 48A are fitted to both left and right end portions of the guide sprocket.

Of the guide sprockets 48, on the left and right sides of the guide sprocket 48 except for the front row guide sprocket 48A,
As shown in FIG. 4, a guide roller 49 is formed, and the movable beam 46 laid over the guide sprocket 48 is supported on the bridge so that the movable beam 46 is rolled and guided.

50 is a suspension chain of the lifting girder 33, the lower end of which is connected to the left and right side positions 33A, 33B of the lifting girder 33, and is suspended and supported by driven sprockets 48, 48A located vertically above the lifting chain. The rear end is connected and fixed to the front end of the moving beam 46 or to an attachment position 50A at an appropriate interval behind the moving beam 46.

51 is a weight adjustable counterweight, are disposed at a proper interval in the middle position of the left and right rear ends and right and left positions on both sides of the central building H _2.

Reference numeral 52 denotes a guide sprocket which is supported by a bearing above the counterweight 51 in the vertical direction. If necessary, a guide sprocket similar to the guide sprocket 48 with the guide roller 49 can be used.

53 is a hanging chain of the counterweight 51,
The lower end is connected to a counterweight 51, and is supported by a guide sprocket 52 located vertically above the counterweight 51.
It is connected and fixed to an attachment position 53A at an appropriate interval in front of 46.

54 is a receiving cylinder of the counterweight 51, the left and right side position and the last row of the intermediate building H _2, a suitable treatment tank D ₁ adjacent
Between to D _14, it is erected supported at a position not to interfere the conveyance of the work W _2.

M ₂ is a drive motor for lifting and lowering that can be rotated forward and reverse, which is installed on the upper girder 30 of the central building H ₂ , 55 is a drive sprocket fitted and fixed to the output shaft of the drive motor M ₂ , 56 is the last row (possible even in the middle) )
A driven sprocket which is fitted and fixed to the rotary shaft 47 of the 57 is a drive chain which is wound supported by the drive sprocket 55 and the driven sprocket 56, the lifting girder 33 by the lifting drive configured in a central building H _2, lift frame 32, lifting rail K _2, and the whole of the workpiece W ₂ which is suspended to the conveyor chain,
Furthermore, the Fukishiburureru F ₁ of ligated into front and rear end portions of the lifting rail K ₂ in the central building H ₂ carry-and allowed lifting moves the entire flexible rail F ₂ of the carry-out side.

Such as by the drive motor M ₂ and the counterweight 51, the frame structure and elevating drive of the elevating rail K ₂ are constructed in the central building H _2.

(Operation of Electrodeposition Apparatus) When the trolley conveyors T are intermittently transported by independently driving the individual trolley drive units N _{1 to} N ₃ , the conveyor chain is transported every pitch accordingly. And stop, and at the time of the stop, the load hanging bracket E of the trolley conveyor T
, In each loading location Q ₁ to Q ₃ in the conveying line L ₁ ~L _3,
Is intermittently transported on the workpiece W ₁ to _W-3 is hung, the workpiece W ₁ to _W-3 sequentially arrive directly above the series of processing tanks D ₁ to D _14.

Then, in synchronization with the stop of the trolley conveyor T, the drive motor M ₁ ~M ₃ are independently separately operate each of the elevation driving device, the lift frame 32 which includes a lifting rail K ₂ across such lifting girder 33 , against the weight of the counterweight 41 and 51 causes a predetermined stroke drop of each conveying line L ₁ ~L ₃
In FIG. 14, flexible rails F ₁ and F ₂ at both front and rear ends of the lifting rail K ₂ are bent and formed along a bending reference line XX ₁ shown in the lower side of FIG. _{1 to} D ₁₄
During a given processing solution Q of drops stop the work W ₁ to _W-3 as Ditsupingu state.

During lifting stopping the lifting rail K _2, the workpiece W ₁ to _W-3, which is submerged in the individual processing solution Q, pretreatment bath between, the predetermined order of 3 to 4 minutes depending on the process sequence, It is supplied to an electrodeposition bath and a post-treatment bath.

The detailed treatment bath process is the same as that described above, and thus the description thereof is omitted.

When a predetermined processing time elapses, the drive motor M ₁ ~M ₃ operates contrary to the aforementioned lifting drive device, the entire device including the lifting rail K ₂ together allowed to rise moving counterweight 41 it was balanced, by lowering movement 51, the lifting rail K ₂ the entire device together allowed to well-balanced upward movement including its flexible rail fixed carry-in front and rear end portions F ₁ and the carry-out side of the flexible rail F ₂
Is raised and returned while being bent to a state like a bending reference line XX shown on the upper side of FIG.

Then, at the stage of detecting the rising stop of the lifting rail K _2,
Again trolley drive device N ₁ to N ₃ are independently separately actuated, the workpiece W ₁ to _W-3 were suspended in individual conveying line L ₁ ~L ₃ By allowed to move forward by one step amount, again, following In the treatment bath process.

In this way, the work is controlled by the individual trolley drives N _{1 to} N ₃ .
W ₁ to _W-3 intermittently allowed transport and lifting rail at the time of stop
By lifting moving K _2, the workpiece W ₁ to _W-3 were suspended in individual conveying line L ₁ ~L _3, third after washing tank last through the first degreasing tank D ₁ of the earliest D ₁₄ Until then, pre-treatment bath, electrodeposition bath,
After being supplied to the post-treatment bath, it is sequentially sent to a baking / drying furnace Y arranged on the rear side of the main building H.

Therefore that over the baking and drying oven Y trolley is conveying line L ₁ ~L ₃ is extended conveyor T also been individually line configuration, the workpiece W ₁ which is fed from the baking and drying oven Y doorway 22 of the 1 group to _W-3 is, after folding in the inner part of the baking and drying oven Y, while being again transported from the baking and drying oven Y entrance 22, after being baked dried, body building H in up and down The cooling process is performed by being transported through the front side and the rear side, and a transport line L _{1 is provided} on the front side of the main building H.
In position O ₁ ~ O ₃ unloading provided for each ~L _3, the individual product workpiece W _1, W _2, W ₃ are unloaded from the hanger E.

Second Embodiment Next, a case of a double-type electrodeposition coating apparatus in which two trolley conveyors T are configured in a line will be described with reference to FIGS. 7 and 8. FIG.

Body building H in this case, the front-side building H ₁ of the front of the apparatus portions partitioned formed in two rows in the longitudinal direction, from the rear side building H ₃ Metropolitan device back part.

In the case of this second embodiment, a structure obtained by removing a substantially central building H ₂ from electrodeposition coating apparatus of the first embodiment, of which, in the FIG. 7, the chain 40 hanging duplicate the lifting rail K ₂ in it is illustrated in case of direct hanging, basic lifting rail K ₂
Since the structures of the suspension means and the lifting and lowering drive device are substantially the same as those in the first embodiment, the same reference numerals are given and the detailed description is omitted.

(Modification) In the case of the front-side building H ₁ and the back side building H ₃ or the second embodiment and the main building H in the first embodiment of the can, both the counterweight 41 a front side building H ₁ of was front and elevation drive unit hanging structure on the rear of the back-side building H _3, walking beam 46 which is configured in the central building of H ₂ first embodiment
And supported so as to advance and retreat with individual front building H ₁ on the left and right sides the upper portion of the rear side building H _3, in the longitudinal direction thereof counterweight 51 on the left and right positions on both sides of each of the building H _1, H ₃ It is also possible to uniformly cope with a structure that is hung at an appropriate interval.

Conversely, at substantially the same structure constructed on the front side building H ₁ and the back side building H ₃ in the case of the first embodiment and the second embodiment, constitute the lifting drive of the central building H ₂ in the first embodiment You can also.

In the case of the, by independent separate facilities trolley drive device N ₁ to N _3, so as to intermittently convey the various work W ₁ to _W-3 separately for each conveying line L ₁ ~L ₃ was in may be adapted to drive together two or more drive sources of the trolley drive device N ₁ to N _3.

(Effects of the Invention) As described above, the present invention firstly provides a trolley conveyor T in which a conveyor chain is inserted through a conveyor rail K, and a work W is suspended and conveyed intermittently on the conveyor chain. When, the trolley the workpiece W to be conveyed by the conveyor T, the made electrodeposition coating apparatus from a number of treatment tank D ₁ to D ₁₄ Metropolitan for processing electrodeposition according required process sequence, conveying line L ₁ of the trolley conveyor T the ~L ₃ plurality of, among them,
The conveyor rail K ₂ located right above the series of processing tanks D ₁ to D ₁₄ configured to move up and down, the flexible rail F ₁ which is connected to the front and rear end portions of the lifting rail K _2, F ₂ is bent The electrodeposition coating apparatus constituted as described above was provided.

Secondly, a trolley conveyor T, in which a conveyor chain is inserted into the conveyor rail K and a workpiece W is intermittently transported by suspending the workpiece W on the conveyor chain, and a workpiece W transported by the trolley conveyor T are intermittently transported. , in a number of the processing tank D ₁ to D _14, comprising electrodeposition coating device and a baking and drying oven Y electrodeposition treated workpiece W to be processed electrodeposition according required process sequence, conveying line L ₁ ~ of the Tororikobea T the entire L ₃ and a plurality of, among them, a plurality of conveyor rails K ₂ located right above the series of processing tanks D ₁ to D ₁₄ configured to move up and down, front and rear end portions of the lifting rail K ₂ The flexible rails F ₁ and F ₂ connected to each other are configured to be bent, and the plurality of transport lines L _{1 to} L ₃ described above are also configured to extend into one baking / drying furnace Y. Also provided.

Therefore, if the above equipment is installed in a production line or a part processing line for various parts, a work with a different kind of part, a work with a different structure, a work with a different size, and a large amount of work And the like, and the electrodeposition treatment bath for the workpiece can be performed simultaneously, and as a whole, the electrodeposition treatment capacity for the workpiece is dramatically improved.

Naturally, this device incorporates a flexible rail with a unique configuration to handle the vertical movement of the lifting rail suspended from the main building, so that the work to be transported becomes large and the processing tank has a large capacity. However, it is not necessary to take an unnecessarily large elevating stroke with respect to the elevating table as in the conventional electrodeposition coating apparatus, and the equipment can be installed much more efficiently.

Of course, if the transfer line of the trolley conveyor is not limited to a series of processing tanks and is installed over a baking drying oven, the equipment can be installed as compared with the case where the baking and drying furnace is installed for each individual transfer line. From the viewpoint of space and equipment cost, various effects such as much more efficient are brought.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing the general outline of a triple-type electrodeposition coating apparatus in which three trolley conveyors are laid out in a plane, FIG. 2 is a front view of a central building, FIG. 3 is a schematic perspective view showing the whole of the main body building, FIG. 4 is a vertical sectional side view of a processing tank part with a sub-tank, and FIG. 5 is a view showing a loading side of a lifting drive device configured in a front side building and a rear side building. FIG. FIG. 6 is a front view showing the carry-out side of the lifting drive device configured in the central building. FIG. 7 is an overall schematic perspective view showing a double-type electrodeposition coating apparatus, and FIG. 8 is a vertical sectional side view of a processing tank portion thereof. FIG. 9 is a perspective view showing an exploded state of one set of main parts of a flexible rail incorporated in an electrodeposition coating apparatus.
FIGS. 1A to 1D are front views showing components of a flexible rail, in which FIG. 1A shows an intermediate rail piece and a side plate fixed to a side surface thereof, and FIG. Figures (c) and (d) show the rail pieces at the front and rear ends and the side plates fixed to the side surfaces of the connection plate. FIG. 11 is a cutaway front view showing a state in which the entirety of the flexible rail is linearly connected in the longitudinal direction, and FIGS. 12 (a) and (b) are cross-sectional side views of the flexible rail. FIG. 11 (a) is a sectional view taken along the line II in FIG. 11, and FIG. 11 (b) is a sectional view taken along the line II-II. FIG. 13 is a partially cutaway front view showing a state where the front and rear ends of the flexible rail are relatively stroked in the vertical direction. FIG. 14 is a partially cutaway front view showing a state in which a flexible rail formed between a movable rail at the center and fixed rails at both front and rear ends is vertically stroked by moving up and down the movable rail. Code table F, F _1, F ₂ ...... flexible rails R, R ₀ ~R _n ...... rail piece X-X ...... folding reference line, S, S ₀ ~S _n ...... side plate P, P ₁ ~ P _n … Connection plate, θ… Inclination angle e… Distance, Z… Axis line K… Conveyor rail, K ₁ … Loading side rail K ₂ … Lifting rail, K ₃ … Loading side rail T… ... trolley conveyor, W, W ₁ ~W ₃ ...... workpiece D, D ₁ ~D ₁₄ ...... treatment tank, G ...... guide roller M ₁ ~M3 ...... drive motor, Q ...... treatment liquid L ₁ ~L ₃ …… Transfer line, H …… Main building H ₁ …… Front building, H ₂ …… Central building, H ₃ …… Back building H ₄ …… Dry building, I _{1 to} I ₃ … Loading position O ₁ OO ₃ … Unloading position, N ₁ NN ₃ト ロ Trolley drive E 荷 Load-lifting bracket, U… Up-slope conveyor rail V… Down-slope conveyor rail 1,1a , 2,2a ... Upper taper end face 3,3a ... Lower taper end face, 4,4a ... Inflection part 5,5a ... Upper taper end face, 6,6a ... Lower taper end face 7 ... Through hole, 8 ... Screw hole, 9, 9a ... Inflection part 10, 10a ... Upper tapered end face 11, 11a ... Lower tapered end face 12 ... Through hole, 13 ... Support shaft, 14 ... Through hole 15 ... Mounting bolt, 16 ... Washers 17, 18, 19, 20… Vertical end surface 21… Base frame, 22… Doorway, 23… Lower beam 24… Sub-tank, 25… Partition plate, 26… Upper mast 27… Lower Mast, 28… Intermediate beam, 29… Upper beam 30… Upper beam, 31… Ceiling beam, 32… Elevating frame 33… Elevating beam, 34… Guide roller, 35… Horizontal beam 36… Mounting bracket, 37 Rotating shaft 38 Double sprocket, 39 Guide sprocket 40, 40A Hanging chain, 41 Counterweight 42 Storage cylinder 43 Drive sprocket 44 Proket, 45… Drive chain 46… Moving beam, 47… Rotating shaft 48, 48A… Guide sprocket, 49… Guide roller 50… Suspension chain, 51… Counterweight 52… Guide sprocket, 53… ... hanging chains

Claims (8)

(57) [Claims] 1. A and trolley conveyor T endless conveying the workpiece W intermittently, the trolley the workpiece W to be conveyed by the conveyor T, a large number of treatment tank D ₁ for processing electrodeposition according required sequence of steps to D ₁₄ in consisting electrodeposition coating device and a, the conveying line L ₁ ~L ₃ of the trolley conveyor T plurality of, of which the lift moves the plurality of conveyor rails K ₂ located right above the processing tank D ₁ to D ₁₄ The lifting rail
Flexible rail F ₁ which is connected to the front and rear end portions of K _2, F
_2. An electrodeposition coating apparatus characterized in that it is configured to bend. Wherein providing the rail piece R ₀ to R _n of relatively short length, the side plate S ₀ to S _n and fixed to the rail piece R ₀ to R _n, and the side plates S ₀ to S _n a side plate S ₀ to S _n of rail pieces R ₀ to R _n of adjacent connection plates P ₁ ~
Connected by P _n, electrodeposition coating device according to claim first term the number of sets is a flexible rail F _1, F ₂ was pivotally as bent. Wherein providing the rail piece R ₀ to R _n of relatively short length, the side plate S ₀ to S _n and fixed to the rail piece R ₀ to R _n, connecting multiple pieces of the rail member Plate P ₁
Connected by to P _n, the rail pieces R ₀ to R _n and the side plate S ₀ to R _n and the connecting plate P ₁ to P inflection 1,1a on folding reference line X-X of _n, 4 , 4a, 9, 9a, the upper side and the lower side are tapered end faces 2, 2a, 3, 3a, 5, 5a, 6, 6a, 10, 1 with an appropriate inclination gradient θ.
0a, formed in 11, 11a, claim first that the number of sets is a flexible rail F _1, F ₂ was pivotally so bent
Item 3. The electrodeposition coating device according to item 2 or 2. 4. A partition body building H into two or more building H ₁ to H ₃ in the lateral width direction, and suspended a lifting rail K ₂ in the longitudinal direction of the individual building H ₁ to H _3, the lifting the electrodeposition coating device of claim 1 wherein comprising configured to move up and down the rail K _2. 5. A trolley conveyor T endless conveying the workpiece W intermittently, the trolley the workpiece W to be conveyed by the conveyor T, a large number of treatment tank D ₁ for processing electrodeposition according required sequence of steps to D ₁₄ And the baking drying furnace Y for the workpiece W subjected to the electrodeposition treatment
In consisting electrodeposition coating device and a, the plurality of the entire conveying line L ₁ ~L ₃ of the trolley conveyor T, of which, a plurality of conveyor rails located right above the series of processing tanks D ₁ to D ₁₄ K ₂ to move up and down, and the lift rail K ₂
Flexible rails F ₁ and F ₂ connected to the front and rear ends of
Together configured to bend, the above-mentioned plurality of conveying line L ₁ electrodeposition coating apparatus characterized by being configured be subjected ~L ₃ to 1 group baking drying oven Y of. 6. provided rail pieces R ₀ to R _n of relatively short length, the side plate S ₀ to S _n and fixed to the rail piece R ₀ to R _n, and the side plates S ₀ to S _n a side plate S ₀ to S _n of rail pieces R ₀ to R _n of adjacent connection plates P ₁ ~
Connected by P _n, electrodeposition coating device according to claim 5 wherein in which the multiple sets is as flexible rail F _1, F ₂ was pivotally as bent. 7. providing rail pieces R ₀ to R _n of relatively short length, the side plate S ₀ to S _n and fixed to the rail piece R ₀ to R _n, connecting multiple pieces of the rail member Plate P ₁
Connected by to P _n, the rail pieces R ₀ to R _n and the side plate S ₀ to R _n and the connecting plate P ₁ to P inflection 1,1a on folding reference line X-X of _n, 4 , 4a, 9, 9a, the upper side and the lower side are tapered end faces 2, 2a, 3, 3a, 5, 5a, 6, 6a, 10, 1 with an appropriate inclination gradient θ.
0a, formed in 11, 11a, claim 5 in which the multiple sets is as flexible rail F _1, F ₂ was pivotally so bent
Item 7. The electrodeposition coating apparatus according to item 6 or 6. 8. partitions the body building H into two or more building H ₁ to H ₃ in the lateral width direction, and suspended a lifting rail K ₂ in the longitudinal direction of the individual building H ₁ to H _3, the lifting the electrodeposition coating device according to the fifth claims consisting configured to move up and down the rail K _2.