JPH0748698A - Method and device for conveying surface-treating device - Google Patents

Abstract

PURPOSE:To shorten the treating time by conveying plural hanging beams, to which a material to be treated is fixed, successively to respective treating tanks. CONSTITUTION:Transfer bars 79A and 79B making a quadrilateral periodic motion, i.e., ascending, advancing, descending and retreating, are provided beside a treating tank in the conveying direction of a material to be treated. Plural hanging beams 49 above respective treating tanks are lifted up to raise the transfer bars 79A and 79B so that the material is positioned above a partition wall 110 between the treating tanks, the transfer bars 79A and 79B are advanced to convey the beams 49 above the succeeding treating tank, the transfer bars 79A and 79B are lowered to place the beams 49 on the treating tank, the transfer bars 79A and 79B are retreated, and the process is repeated to to continuously convey the beams 49.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carrying mechanism and a carrying method of a surface treatment apparatus for treating the surface of an object to be treated.

[0002]

2. Description of the Related Art Generally, when a surface treatment of an article, for example, an alumite treatment, is performed in a number of steps until it is completed as a product, as illustrated in FIG. That is, FIG.
From the right end of, degreasing 1, washing 2,3, degreasing 4, washing 5,
6, Neutralization 7, Washing with water 8, 9, Alumite 10, Washing with water 11,
12, 13, hot water wash 14, water wash 15, drainer 16, dry 1
There are 7 processes, and the treatment tanks of each process are independently arranged in a line.

In order to immerse or carry the object to be processed into each of the processing tanks 1 to 17, a guide rail is arranged above each of the processing tanks 1 to 17, and a hanger is hung on each of the guide rails. A transfer system by so-called batch processing is adopted in which a hanger holds an object to be processed and each hanger is moved vertically along a guide rail by a driving means such as a chain.

[0004]

However, in the transfer by the batch processing method, since one hanger is sequentially transferred to each processing tank by one driving means, the processing efficiency is relatively poor and the required processing is required. It took a lot of time to surface-treat a large number of objects to be treated. The present invention has been made in view of the above situation, and an object thereof is to successively convey the objects to be processed so that the required number of objects to be surface-treated can be processed in a short time. (EN) Provided are a transport mechanism and a transport method for surface treatment.

[0005]

In order to achieve the above object, the present invention takes the following technical means. That is, according to the present invention, the processing baths containing the processing liquids corresponding to the respective steps are arranged in the order of the steps, one or a plurality of objects to be processed are attached to the respective hanging beams, and the objects to be attached to the respective hanging beams are arranged. A transfer mechanism of a surface treatment device that sequentially transfers each suspended beam onto each processing tank so that the processed material is sequentially dipped in the processing liquid of each processing tank and transferred, and it has four sides of rising, advancing, descending, and retreating. A transfer bar having a periodic movement is arranged on the side of the processing tank in the direction in which the processing object is conveyed, and when the transfer bar rises, the processing object is positioned above the partition wall between the processing tanks. Lift multiple suspended beams on each treatment tank,
It is characterized in that it is provided with a suspension beam receiving portion that conveys these suspension beams when moving forward and separates from these suspension beams when descending.

Further, according to the present invention, the processing baths containing the processing liquids corresponding to the respective steps are arranged in the order of the steps, and one or a plurality of objects to be processed are attached to the respective hanging beams, and are attached to the respective hanging beams. A method of transporting a surface treatment apparatus in which each suspended beam is sequentially transported onto each treatment tank so that the treated object is sequentially dipped in the treatment liquid of each treatment tank and is transported. A transfer bar that moves in a receding quadrilateral periodic motion is placed on the side of the processing tank in the direction of transfer of the processing object, and the transfer bar is raised to position the processing object above the partition wall between the processing tanks. As you can see, lift multiple suspension beams on each treatment tank, move the transfer bar forward to convey these suspension beams at once, and lower the transfer bar to place these suspension beams on the treatment tank and transfer the transfer beam. Retreat above It is characterized by carrying a plurality of suspended beams continuously by repeating the work.

[0007]

According to the present invention, the object to be treated, which is immersed in the treatment liquid of each treatment tank, is attached to each suspension beam, and the plurality of suspension beams on each treatment tank are provided on the four sides of the treatment tank. It is moved up and down through the suspension beam receiving part by the transfer bar which moves cyclically, moved forward and downward, and again after the required time, moved forward and forward.
Due to the descending progressive movement, it is sequentially and continuously conveyed to each processing tank without interfering with the partition wall of each tank.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. The drawings show an embodiment in which the present invention is applied to an alumite treatment device, particularly a surface coating treatment device that alumite-treats the peripheral surface of the scroll and the inner bottom surface of the recess which are the treated portion of the scroll type rotor of an air conditioner. Each processing tank containing a processing solution corresponding to each processing step for processing is lined up in the order of steps, and one or a plurality of objects to be processed are suspended by a suspension beam via a chuck or the like. A transport mechanism is provided for sequentially transporting each suspension beam onto each processing bath so that the suspension beams are sequentially immersed in the processing liquid in each processing bath and transported. Hereinafter, the surface treatment apparatus of this embodiment will be described in detail.

As shown in FIG. 2, from the right end, a degreasing tank 1, water washing tanks 2, 3, a degreasing tank 4, water washing tanks 5, 6, a neutralization tank 7, water washing tanks 8, 9, an alumite treatment tank 10, a water washing tank. 11, 12,
13, a hot water washing tank 14, a water washing tank 15, a draining tank 16 and a drying tank 17 are sequentially arranged, and as shown in FIG. 3, FIG. 4, FIG. 5 and FIG. It is installed via a support leg 19 and a support girder 20. A partition wall 110 is erected between the processing tanks 1 to 17 to partition adjacent processing tanks.

Each of the processing tanks 1 to 17 is lined with a synthetic resin or the like, and a degreasing reserve tank 21 or 22 and a neutralization reserve tank 23 are provided in the equipment stand 18.
An alumite reserve tank 24, a water washing reserve tank 25, and a hot water washing reserve tank 26 are provided. The treatment liquid or water in each tank is
It is circulated by the circulation pumps 27 to 35.

The inner walls and bottom plates of the processing tanks 1 to 17 are lined with synthetic resin plates 37, 3 respectively.
8 and 39 are installed, and as shown in FIGS. 5 and 6, a partition wall 40 having a height lower than that of the side wall is provided in the vicinity of one (rear side) side lining 38 and the overflow chamber 41 is provided. The overflow pipe 42 is provided at the bottom of the overflow chamber 41 so as to penetrate therethrough, and the lower end of the overflow pipe 42 is guided to each of the reserve tanks 21 to 26.

At the upper ends of the inner side surfaces of the front and rear walls of each of the processing tanks 1 to 17, side grooves 43 and 44, which are located above the linings 37 and 38 and extend in the conveying direction of the object to be processed, are formed.
Support lateral rods 4 parallel to the front and rear side walls are formed in the side grooves 43 and 44.
5, 46 are fixed via the support members 47, 48, and the processing liquids in the processing tanks 1 to 15 overflow into the overflow chamber 41 from the upper edge of the partition wall 40, and the processing liquids in the processing tanks 1 to 15 are The liquid level is kept constant, and only the treated portion of the object 36 to be treated can be immersed in the treatment liquid.

The object 36 to be processed is, as shown in FIG.
Both side supporting rods 4 in the side grooves 43 and 44 of the processing tanks 1 to 17
The chuck 5 is attached to the suspension beam 49 supported by
It is mounted by suspending a large number at predetermined intervals through 0, and as described above, only the processing portion is prevented from moving below the height at which it can be immersed in the processing liquid. In addition,
The suspension beam 49 and the chuck 50 are made of a conductive material, and support legs 51 made of a conductive material are provided at both ends of the suspension beam 49 in the longitudinal direction (front and rear), and the lower surface of the support leg 51 is shown in FIG. Is a downward V-shaped groove 52, and the groove 52 can be placed on the supporting horizontal rods 45 and 46. The outer end of the both-end supporting leg 51 (the outer end in the longitudinal direction of the hanging boom 49) is a surface. The two arms 53 are parallel to the suspension beam 49 with a predetermined distance in the front-rear direction of the object to be processed, and further outside (front-back) by a considerable distance from the front-rear walls of the processing tanks 1 to 17.
Is provided so as to project (see FIG. 11).

The supporting horizontal rod 46 provided in the alumite treatment tank 10 is made of a conductive material, and the supporting member 48 and the side groove 44 of the supporting horizontal rod 46 are made of an insulating material. Is an electrode (anode) of the object to be processed 36 and is connected to the power supply line 54 (see FIG. 10). On the inner bottom lining 39 of the alumite processing tank 10, a large number (24 in this example) of processing liquid ejecting pipe manifolds 55 extending in the front-rear direction are arranged at predetermined intervals in the object-transporting direction.
Are arranged parallel to each other. This manifold 55
8 is formed in the lower part between the counter electrode support plates 56A and 56B made of an insulating material as shown in FIGS. 8 and 9, and the treatment liquid in the alumite reserve tank 24 is shown in FIG.
The liquid is supplied through the processing liquid supply pipe 59 provided with the on-off valves 57 and 58 and the circulation pump 32 on the way.

Then, as shown in FIGS. 6, 8 and 9,
Common counter electrode supporting members 60A and 60B made of a conductive material are fixed to the inner surfaces of the counter electrode supporting plates 56A and 56B facing the upper ends, and the cathode is connected to the member 60B by a power supply line 61. The collar portion 62A provided on the outer periphery of a large number of cylindrical counter electrodes 62 on 60A and 60B has the manifold 55
Are mounted at equal intervals (equal intervals with the object to be processed 36) in the longitudinal direction thereof and corresponding to the object 36 to be processed, and the brim 62A is provided with the mounting plate 64 made of an insulating material and having the counter electrode insertion hole 63. It is fixed to 56A and 56B so that it can be replaced.

Each counter electrode 62 is made of a lead tube, and the tip portion 65A of the treatment liquid injection tube 65 is inserted upward and eccentrically on the peripheral surface of the lower half thereof. Further, each of the injection pipe tip portions 65A is connected to the injection pipe 65 inserted and fixed in the through hole of the one counter electrode support plate 56A in the through hole, and is attached to the inner surface of the counter electrode support plate 56A by the flange 66. ing.

Each of the processing liquid injection pipes 65 is provided with a flow rate adjusting valve 67 in the middle thereof, and its base end is connected to the manifold 55 so as to communicate with it, and the flow rate adjusting valve 67 causes a counter electrode from each injection pipe tip 65A. The flow rate of the processing liquid jetted into the inside 62 is made uniform, the processing liquid jets colliding with the object 36 are brought into the same state, and the processing is performed under the same conditions. In addition, power is supplied to the counter electrode 62 by the side groove 4 of the processing tank 10.
It is performed from the 3 side, and the current density is made uniform by making the potential difference between each counter electrode 62 and the object to be processed 36 on the opposite side to the power supply to the supporting horizontal member 46 which is the anode, and The film thickness of the alumite coated on each object 36 can be made uniform.

On the upper surface of the mounting plate 64, concentric with each counter electrode insertion hole 63, a blade mounting tube 68 made of an insulating material is fixed, and the counter electrode 62 is concentrically inserted thereinto, and outside The rotary-blade support cylinders 69 are externally fitted and fixed. A rotary blade 70 for stirring the processing liquid is rotatably attached to the inside of the upper end of each support cylinder 69 by a horizontal shaft 71. The rotary blade 70 has a semi-circular shape and is provided with a large number of processing liquid passage holes 72 (see FIG. 8) and is rotated by the processing liquid jet ejected from the injection pipe 65.

Further, on the peripheral surface of the upper end portion of the support cylinder 69, a horizontally elongated processing liquid suction opening 73 penetrating in the direction orthogonal to the horizontal axis 71 is provided on the injection pipe 65 side, and the injection pipe 65 is provided. The treatment liquid on the outer peripheral portion of the support cylinder 69 is attracted by the treatment liquid jet ejected from the support cylinder 6 through the opening 73.
9 so that the jet flow rate increases and the workpiece 36
By increasing the amount of the processing liquid that collides with the object 36, the gas adhering to the object 36 is removed and removed, and the growth of bubbles is prevented, so that the film layer on the object 36 is uniformly formed.

The processing liquid passage hole 72 of the rotary blade 70 is
The impact of the collision of the processing liquid jet ejected from the injection pipe 65 is mitigated, and the rotation of the rotary blade 70 is softened so that the jet impinges on the object to be treated 36 and the optimum jet for preventing gas adhesion and bubble growth is obtained. To work. In FIG. 6, 74
Is a treatment liquid drop pipe in the manifold 55, which is connected to the treatment liquid supply pipe 59 through a valve 75, and the lower end thereof is guided to the inner bottom portion of the alumite reserve tank 24. Further, in the side groove 44 of the alumite treatment tank 10, water is accumulated to form a water groove so that the supporting horizontal rod 46 serving as an electrode and the lower end portion of the supporting leg 51 are sufficiently immersed.

The suspension beam 49, that is, the mechanism for dipping / pulling the object to be processed 36 into the processing tanks 1 to 15 and the conveying mechanism to the next step, is a quadrangle movement in a front view, that is, as shown in FIG.
The first to perform a periodic motion consisting of ascending, advancing, descending and retracting
The transfer bars 76A and 76B are provided. The first transfer bars 76A and 76B are divided into two parts in the conveyance direction of the object to be processed 36, and are driven by independent and independent driving means. Since the driving means are the same, the same reference numerals are given. Then, the first transfer bar 76A at the front stage portion in the transport direction and its driving means will be described in detail.

As shown in FIGS. 1 and 3 to 7, the first transfer bar 76A extends long in the front and rear of the processing tanks 1 to 10, that is, both sides in the object conveying direction, and is horizontally moved by a plurality of lifting rods 77. The second transfer bars 79A and 79B in the upper stage are supported on the first transfer bar 76A through the support column 78 at the portion where the object 36 to be processed is pulled up and conveyed in the next process. Object 36 from processing tank 1
It is provided at a position as high as necessary to pull it up from 17 and convey it to the processing tanks 2 to 17 in the next process.

Then, each first transfer bar 76A is engaged with a distance (conveyance pitch) required for moving from the previous step to the next step, and further, the one on the front side of the arm 53 of the suspension beam 49 in the conveyance direction. A suspended beam receiving portion 80 made of an insulating material is attached to allow horizontal movement only (that is, to laterally move the workpiece 36 without lifting it). Further, in the second transfer bar 79A, two pairs of suspension beam receiving portions 81 made of an insulating material are provided at the same spacing as the spacing between the arms 53 and at the same pitch on the front side in the transport direction as the pitch of the suspension beam receiving portions 80. Are installed respectively.

That is, the upper second transfer bar 7
The height difference between 9A and the first transfer bar 76A at the lower stage is the same as the hanging beam receiving portion 80 on the side of the first transfer bar 76A.
Is engaged with the arm 53 of the suspension beam 49, the lower end of the workpiece 36 hung by the suspension beam 49 lifted by the second transfer bar 79A is the partition wall 110 between the processing tanks 1 to 17. (That is, the object to be processed 36 is located above the partition wall 110), the height difference is sufficient.

It should be noted that two pairs of the hanging beam receiving portions 81 are provided.
Is provided at a position in which one (the beam receiver on the front side in the transport direction) is slightly higher than the other (the beam receiver on the rear side in the transport direction),
When receiving the arm 53 of the suspension beam 49, the suspension beam 49
Concentration and quality of the processing liquid can be reduced by tilting the rear part downward and tilting the processing object 36 so that the processing liquid easily flows down from the processing object 36 and less is brought into the processing tank in the next process. Is kept as constant as possible.

Below the supporting girders 20 of the processing tanks 1 to 17, horizontally extending supporting brackets 82 are provided so as to extend inwardly at the upper end of the apparatus pedestal 18, and the objects to be processed are mounted on the brackets 82. Guide rails 83 extending in the carrying direction are provided in parallel in the front-rear direction, and a pair of front and rear carriages 85 on the guide rails 83 via guides (linear guides) 84 are movable in the carrying direction and interfere with the support legs 19. Not, and furthermore, it is mounted so as to project before and after each of the processing tanks 1 to 17.

The pair of front and rear carriages 85 are connected and integrated by a connecting member 86, and two pairs of the front and rear carriages 85, which are connected and integrated, are provided in the front and rear, and the connecting rod 8 is provided.
7 are linked together. A rack 88 parallel to the guide rail 83 is horizontally fixed by an L-shaped member 89 at a space below the carriage 85 disposed immediately below the degreasing tank 1 in the horizontal direction. The drive shaft 9 is mounted on the drive shaft 9 via a plurality of bearing mounts 90 in a direction orthogonal to the rail 83.
1 is rotatably supported, and a pinion 92 fixed to the drive shaft 91 meshes with the rack 88. And
The drive shaft 91 is driven by a reciprocating speed reducer motor 93 installed on the apparatus mount 18 via a coupling 94.

At the end of the connecting member 86 located on the end portion of each of the carriages 85 extending in front of and behind the processing tank, the lifting rod 77 is provided.
Is vertically held in a penetrating manner, and an elevating rod slide guide cylinder 95 is erected upright, the shaft ends of the elevating drive shafts 96, 96A are pierced in the front-rear direction, and rotatably supported by bearings 97. In the end of the connecting member 86, a pinion (not shown) fixed to the lifting shafts 96, 96A is meshed with a rack portion 77A provided on the lifting rod 77.

The lifting drive shaft 96A on the carriage 85 disposed directly below the degreasing tank 1 is longer than the other drive shafts 96, but each of the shafts 96, 96A has a bearing 98 for carrying the carriage 85. While being pivotally supported in parallel with each other, the interlocking pinions 99 are fixed to each, and each rack 100 mounted slidably in parallel with the connecting member 86 on the carriage 85 meshes with each other. Are linked and linked together.

An elevator drive motor 102 with a speed reducer is installed on the carriage 85 directly below the degreasing tank 1. The output shaft of the elevator drive motor 102 is connected via a coupling 103.
6A, the lifting drive shaft 96A is rotated by the normal rotation start of the motor 102, and the other drive shafts 96 are synchronously interlocked with each other via the pinion 99, the rack 100, and the connecting rod 101, and each lifting rod 77 is connected. Are simultaneously raised and stopped at the upper limit, and by the reverse rotation of the motor 102, the respective lifting rods 77 are also simultaneously lowered.

On the outer periphery of the upper end of the apparatus mount 18, as shown in FIGS. 5 and 6, an arch-shaped cover frame 10 is provided.
4 is installed upright, a fixed cover 105 and a removable cover 106 are attached to the outer periphery, and an exhaust gas duct 107 is provided in the center of the cover 105 at the center of the top end to discharge the gas generated in the processing tank to the outside and process it. It's getting better. A gas blocking plate 108 is attached between the upper end of the lower fixed cover 105 and each of the tanks 1 to 17 so as to allow the lifting rod 77 to move up and down and move back and forth.
The generated gas is prevented from coming into contact with the driving means of 6A and 76B, the durability thereof is improved, and the generated gas is surely collected for environmental protection.

Next, the operation of the above embodiment will be described. First, the object to be processed 36 is gripped by each of the chucks 50 suspendedly mounted on the suspension beam 49, and the both end arms 53 of the suspension beam 49 are placed on the first pair of suspension beam receivers 81 of the second transfer bar 79A. Placed and supported. And
The first transfer bars 76A and 76 shown in FIG. 1 or FIG.
In the lower position of B and the second transfer bars 79A, 79B, the lifting drive motor 102 starts forward rotation, the lifting rod 77 rises and reaches the upper limit, and the object to be processed 36 is removed from the degreasing tank 1
The motor 102 stops at a position past the upper edge of the motor.

Subsequently, the reciprocating drive motor 93 starts to rotate in the normal direction, and the first and second transfer bars 76A, 76B, 79A and 79B move forward together with the respective reciprocating stages 85, so that the object 36 to be processed is conveyed in the conveying direction. When the motor 93 is moved forward and the motor 93 is stopped on the degreasing tank 1, the first transfer bars 76A and 76B are stopped, and at the same time, the lifting drive motor 102 is reversely started to move the first lifting bar 77 together with the first lifting bar 77.
The transfer bars 76A and 76B descend and the suspended beam 4
The supporting legs 51 at both ends of the shaft 9 are placed on the supporting horizontal rods 45 and 46, the suspension beam 49 is supported horizontally without tilting, and the suspension beam receivers 80 and 81 and the suspension beam 49 are separated from each other.

At this time, the object 36 to be processed is only immersed in the processing solution in the degreasing tank 1. As shown in FIG. 5, the hanging beam receiving portion 81 is positioned slightly downward from the arm 53, and the reciprocating drive motor 93 is again started in the reverse direction so that the first transfer bars 76A and 76B are moved together with the reciprocating table 85. The robot moves backward and returns to the start position shown in FIGS. 1, 3 and 4, and waits for the next operation.

The processing time of one step such as washing with water, neutralization and washing with hot water is the same, and at the end of the processing time, the elevating drive motor 102 starts to rotate in the normal direction and the first transfer bar 76.
A and 76B perform a quadrilateral motion in the same manner as described above, and convey the suspension beam 49 to the next step. At this time, the degreasing tank 1,
4, alumite treatment tank 10, draining tank 16 and drying tank 1
7, the suspension beam 49 is the first transfer bar 76A,
The suspension beam receiving portion 80 attached to 76B allows the support leg 51 to support the supporting rod 4 without being pulled up from the processing liquid.
While being slid on 5 and 46 and transferred substantially horizontally, the processing of the object 36 in the degreasing tanks 1 and 4 and the alumite processing tank 10 is continued without interruption. In particular, in the alumite treatment tank 10, power supply is not interrupted.

The second transfer bars 79A, 79
Since the pair of suspension beam receivers 81 provided in B have the front side in the transport direction higher than the rear side, the rear side of the suspension beam 49 tilts downward while the workpiece 36 is pulled up to move forward and down. Therefore, the processing liquid flows down from the object 36 smoothly and quickly, and the amount of the processing liquid brought into the next process can be reduced.

In this way, the suspended beam 49 on which the object to be processed 36 is suspended is mounted on the first and second transfer bars 7.
The intermittent quadrilateral movement of 6A, 76B, 79A and 79B is repeated to smoothly and quietly convey to the next step. Then, the gas generated in the processing tank is the cover 10
It is possible to protect the environment by collecting the exhaust gas from the exhaust gas duct 107 without collecting it by 5, 106 and the shielding plate 108 and collecting the exhaust gas from the exhaust gas duct 107.

According to the above-mentioned embodiment, the space above the processing tank only needs to have a height corresponding to the amount of lifting and lowering of the suspension beam 49, and therefore the overall height of the apparatus can be reduced. Further, since a large number of objects 36 to be processed can be mounted on the hanging beam 49, a large number of objects 36 to be processed can be efficiently processed, and productivity can be significantly improved. In addition, in the alumite processing tank 10, each object 36 to be processed can be processed. The jet stream ejected from the jet tube 65 is contacted with stirring to remove the adhering gas and prevent the growth of bubbles to make the thickness of the film formed on the treated portion uniform, and the feeding directions to the cathode and the anode are opposite to each other. The current density can be made uniform, and the flow rate of the processing liquid ejected from the injection pipe 65 can be made uniform so that each object to be processed 36 can be processed under the same conditions and under the same conditions. Can be improved and homogenized, and productivity can be improved.

That is, the processing baths containing the processing liquids corresponding to the respective steps are arranged in the order of the steps, and one or a plurality of objects 36 to be processed are suspended by the suspension beam 49 via the chuck 50 and the like. It is a surface treatment apparatus in which the object to be treated 36 is sequentially immersed in the treatment liquid of each treatment tank and is conveyed, and the suspension beams 49 are arranged on both sides of the treatment tank in the treatment object conveyance direction. Transfer bars 76A, 76B, 79A, 7 that perform quadrilateral movements of ascending, advancing, descending, and retreating.
Since 9B is used to sequentially transfer to each processing tank, the structure is simple and compact, the overall height of the apparatus can be reduced, and most of the object transfer means (transfer mechanism) directly contacts the generated gas. It is possible to improve the durability of the workpiece 36, and to smoothly, reliably, and quietly convey the object 36 to be processed.
Maintenance management is easy.

The transfer bars 76A, 76B,
79A and 79B respectively include a suspension beam receiving portion 8 made of an insulating material.
A suspension beam receiving portion 80 corresponding to a processing tank in which a large number of 0 and 81 are arranged and which is immersed in a plurality of hours in another process in the same process
Is lower than the other suspended beam receiving portions 81 so that the object to be processed 36 can be moved only horizontally except for the one to be conveyed to the next step. Then, the suspension beam receiving portion 81 of the transfer bars 79A and 79B causes the suspension beam 49 to perform a quadrilateral motion every time to convey the object 36 to be processed to the next step. However, in a step having a long processing time such as degreasing and alumite treatment, The object to be processed 36 can be continuously moved forward without pulling it up from the processing tank, and the processing can be continuously performed. Especially, in the electric processing tank, the processing can be continued without interruption of power supply, and the quality is ensured. Can be planned.

Further, at both ends of the suspension beam 49, two arms 53 are provided in front of and behind the conveying direction in parallel with the longitudinal direction of the beam, and a pair of suspension beam receivers 81 for supporting both arms 53 are provided. Since one is slightly higher than the other, when the object 36 to be processed is transferred from the pre-treatment tank to the post-treatment tank, the rear part of the suspension beam 49 in the conveying direction is inclined downward, so that the object 36 is inclined, The processing liquid quickly flows down from the object to be processed 36, the amount of the processing liquid brought into the next step processing tank is reduced, the quality control of the processing liquid and the amount of liquid replenishment can be reduced, and the quality is improved. You can

Support legs 51 made of a conductive material are provided at both ends of the hanging beam 49, and support horizontal rods 45, 46 are provided at both ends of each processing tank in the object carrying direction in parallel with the carrying direction. The supporting leg 51 can be placed on the supporting horizontal rods 45 and 46, and the object 3 to be processed among the supporting horizontal rods provided on one side of the processing tank.
Since the supporting horizontal rod 46 in the step of performing the electrical treatment of 6 can be energized, the suspension beam 49 is provided.
Can be reliably supported, the power supply mechanism can be simplified, and power can be reliably and efficiently supplied.

Further, the cover 10 which covers the entire upper part of the processing tank.
Since 5,106 are provided, the gas generated from the treatment tank (particularly the alumite treatment tank 10) can be reliably collected without being emitted to the outside, and the environment can be protected.
It is possible to prevent the generated gas from flowing around to the object-to-be-processed conveying means (conveying mechanism), prevent corrosion of the apparatus / devices, and improve the durability.

Further, the power supply to the object to be processed 36 and the power supply to the counter electrode 62 provided below the object to be processed 36 so as to face each other are performed from opposite directions on both sides of the object to be processed conveying direction. Therefore, it is possible to make the applied current density to the object to be processed 36 uniform, to make the thickness of the surface coating film uniform, and to eliminate the variation in the quality of each object to be processed (product). Is possible.

The present invention is not limited to the above-described embodiment, but a mechanism other than the rack and pinion mechanism can be used for the quadrilateral movement of the transfer bar, a cylinder can be used instead of the motor, and an alumite can be used. It can be applied to various surface treatments such as plating other than the treatment.

[0046]

As described above, according to the present invention, the processing baths containing the processing solutions corresponding to the respective steps are arranged in the order of the steps, and one or a plurality of objects to be processed are attached to the respective hanging beams. , A transfer mechanism of a surface treatment apparatus for sequentially transferring each suspended beam onto each processing tank so that the object to be processed attached to each suspended beam is sequentially immersed in the processing liquid of each processing tank and transferred, A transfer bar having a quadrilateral periodic movement of ascending, advancing, descending, and retreating is disposed on the side of the processing tank in the direction in which the workpiece is conveyed, and the transfer bar has a partition wall between the processing tanks when rising. A hanging beam receiving part that lifts a plurality of hanging beams on each processing tank so that the object to be treated is positioned above, conveys these hanging beams when moving forward, and separates from these hanging beams when descending Is also equipped with Since it is, the plurality of suspended beams object to be processed is attached is sequentially by transfer bars,
It can continuously and smoothly transfer to each processing tank without interfering with the partition wall between the processing tanks, and the transfer of a predetermined number of objects to be processed in the surface processing apparatus can be carried out efficiently and in a short time with a simple mechanism. It can be carried out.

Further, the carrying method of the present invention is such that
A transfer bar that moves in a descending and retracting quadrilateral periodic motion is arranged on the side of the processing tank in the conveying direction of the processing object, and the transfer bar is raised so that the processing object is above the partition wall between the processing tanks. Lift a plurality of suspended beams on each treatment tank so as to be located at, transfer the transfer bar forward to convey these suspended beams at once, and lower the transfer bar to place these suspended beams on the treatment tank, It is characterized in that a plurality of suspended beams are continuously transported by retracting the transfer bar and repeating the above-mentioned operation. Therefore, a plurality of suspended beams to which a workpiece is mounted are transported to each processing tank. Can be performed smoothly and continuously, and the overall processing time can be shortened.

[Brief description of drawings]

FIG. 1 is a front view showing a main part of an embodiment of the present invention.

FIG. 2 is a plan view showing an arrangement of processing tanks in the example.

FIG. 3 is a front view showing the right half of the apparatus of the embodiment.

FIG. 4 is a front view showing the left half of the apparatus of the embodiment.

5 is a cross-sectional view taken along the line AA of FIG.

6 is a partial simplified cross-sectional view taken along the line BB of FIG.

FIG. 7 is a plan view showing a main part of the transfer bar and the transfer driving means thereof in the same embodiment.

FIG. 8 is a front view showing a treatment liquid jet stirring means in the alumite treatment tank in the embodiment.

9 is an enlarged cross-sectional view taken along the line CC of FIG.

FIG. 10 is a vertical cross-sectional side view showing a power feeding mechanism to the object to be treated and a suspension beam supporting means in the alumite treatment tank of the embodiment.

11 is a cross-sectional view taken along the line DD of FIG.

FIG. 12 is a motion explanatory view of the transfer bar according to the embodiment.

[Explanation of symbols]

 1-17 Each processing tank 36 Processing object 49 Suspended beam 79A Transfer bar 79B Transfer bar 81 Suspended beam receiving part 110 Partition wall between processing tanks

Claims (2)

[Claims] 1. Processing tanks containing processing liquids corresponding to respective steps are arranged in order of steps, and one or a plurality of objects to be processed (3
6) is attached to each suspension beam (49), and the processed object (36) attached to each suspension beam (49) is sequentially dipped in the treatment liquid of each treatment tank and transported so that each suspension beam ( 49) is a transfer mechanism of a surface treatment apparatus for sequentially transferring each processing tank onto each processing tank, and transfer bars (79A, 79B) that perform a quadrangle periodic movement of ascending, advancing, descending, and retracting transfer the processing object in the processing tank. The transfer bar (79A,
79B) has a partition wall (1
When a plurality of suspension beams (49) on each treatment tank are lifted so that the object to be treated (36) is positioned higher than 10), and when the suspension beams (49) are transported and moved downward when advanced. A transport mechanism for a surface treatment apparatus, comprising: a suspension beam receiver (81) detached from these suspension beams (49). 2. Processing tanks containing processing liquids corresponding to respective steps are arranged in order of steps, and one or a plurality of objects to be treated (3
6) is attached to each suspension beam (49), and the processed object (36) attached to each suspension beam (49) is sequentially dipped in the treatment liquid of each treatment tank and transported so that each suspension beam ( 49) is a method of transporting a surface treatment device for sequentially transporting each of the treatment tanks onto each treatment tank, and the transfer bar (79A, 79B) that moves in a quadrangle periodic motion of ascending, advancing, descending, and retracting is conveyed in the treatment tank. This transfer bar (79A,
79B) so that the object to be treated (36) is located above the partition wall (110) between the treatment tanks, and the plurality of suspension beams (49) on each treatment tank are lifted to transfer the transfer bar (79A). , 79B) are moved forward to convey these suspension beams (49) onto the treatment tank of the next process, and the transfer bars (79A, 79B) are lowered to make these suspension beams (4).
9) is placed on the treatment tank and the transfer bar (79A,
79B) is retracted and the above-mentioned operation is repeated, whereby a plurality of suspension beams (49) are continuously transported, and a method of transporting a surface treatment apparatus.