JP2008202098A - Surface treatment apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a surface treatment apparatus which enhances its treatment efficiency in a series of surface treatment operations by shortening a treatment period of time, thereby can enhance the productivity for an article to be treated, makes an occupation area for installing the apparatus compact, and miniaturizes the apparatus itself. <P>SOLUTION: This surface treatment apparatus comprises: a treatment tank 10; a basket-holding means 11 for holding a basket 6 in the treatment tank 10; a controlling tank 13 for storing a treatment liquid to be used in the treatment tank 10 therein; a feeding means 46 which supplies the treatment liquid from the controlling tank 13 to the treatment tank 10; and a rinsing means 100 which supplies washing water into the treatment tank 10. The feeding means 46 has a pipe 49 for collecting the treatment liquid, and the rinsing means 100 has a pipe 103 for collecting washing water. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a surface treatment apparatus.

With respect to surface treatment such as plating, various apparatuses have been proposed with the aim of shortening the treatment time. For example, an apparatus has been proposed in which a vertical barrel is used, and the barrel is held horizontally during transfer between processes, but when performing plating or the like, the barrel is inclined obliquely and further rotated ( (See Patent Document 1). Thus, by rotating the barrel in an inclined state, the work in the barrel is promoted to agitate.
In the above-mentioned Patent Document 1, three types of processing devices, “a processing device that performs plating processing”, “a processing device that performs processing other than plating processing”, and “a processing device that performs water washing”, are independent of each other. It is disclosed as a separate device.

That is, after performing a treatment other than the plating treatment or the plating treatment by the “treatment device for performing the plating treatment” or the “treatment device for treatment other than the plating treatment”, the barrel is transferred to the “treatment device for washing with water”. This means that the treatment liquid is washed off by the “treatment apparatus for washing with water”.
In this "treatment apparatus for washing water", the water tank was installed adjacent to or away from another space, and was connected to the "treatment apparatus for washing water" by a supply pipe or a recovery pipe. .
JP 2003-147593 A

As described in Patent Document 1 described above, the conventional surface treatment apparatus is independent of the “treatment apparatus for performing plating treatment” and the “treatment apparatus for performing treatment other than the plating treatment” and the “treatment apparatus for performing washing with water”. Since it is a separate apparatus and it is necessary to put in and out of the barrel and transfer between these processing apparatuses, it sometimes takes a long processing time. This has become a serious bottleneck in improving the processing efficiency (product productivity) in a series of surface treatment operations.
In addition, in the conventional surface treatment apparatus, the existence of the “treatment apparatus for performing water washing” itself requires an occupied area for installation, and in addition to this, the “treatment apparatus for performing water washing” and the water tank are adjacent or Since the pipes are connected in a separated state, a considerably large space (site) is required as an occupied area for installation.

In addition, the pipe connection of the supply pipe and the recovery pipe must be carried out after carrying the processing tank and water tank into the installation position (in the factory) and installing (fixing) them. At the same time, it has become a large-scale facility, leading to an increase in the cost of the facility, and has many problems such as being extremely disturbing to the movement of the operator even after piping.
In addition, although the bowl-shaped container which accommodates to-be-processed object in a processing tank is called the "barrel" in the said patent document 1, it is called a "basket" below.
The present invention has been made in view of the above circumstances, and by shortening the processing time, it is possible to increase the processing efficiency in a series of surface treatment operations and thereby increase the productivity of the object to be processed. An object of the present invention is to provide a surface treatment apparatus.

  It is another object of the present invention to provide a surface treatment apparatus that can suppress the installation area to be compact, can be made compact as an apparatus, and can improve and remove the conventional drawbacks related to installation.

In order to achieve the above object, the present invention has taken the following measures.
That is, the surface treatment apparatus according to the present invention includes a treatment tank capable of storing a treatment liquid, and a basket holding means provided in the treatment tank so as to be able to hold a basket containing an object to be processed in the treatment tank, A control tank that stores the processing liquid used in the processing tank and performs quality control, a processing liquid supply means that can supply the processing liquid from this management tank to the processing tank, and a cleaning water can be supplied into the processing tank And a washing liquid supply means for collecting the treatment liquid in the treatment tank and a washing means for washing water for collecting the washing water in the treatment tank. Has a collection tube.

As described above, the surface treatment apparatus according to the present invention has not only the treatment liquid feeding means and the treatment liquid recovery pipe, but also the water washing means and the washing water recovery pipe, so that it enters the treatment tank. The treatment liquid can be supplied and recovered, and the cleaning water can be supplied and recovered. Accordingly, after the surface treatment is carried out in the treatment tank, water washing can be carried out continuously without taking out the basket.
For this reason, in the surface treatment apparatus according to the present invention, a dedicated treatment apparatus for performing water washing can be omitted, and the labor for putting in and out of the basket and the transfer between each surface treatment apparatus is greatly increased. Can be reduced. As a result, the processing time can be greatly shortened, the processing efficiency in a series of surface processing operations can be increased, and the productivity of the object to be processed can be increased.

In addition, since a dedicated processing device for washing with water is unnecessary, as a group of devices for performing a series of surface treatment operations, the occupied area for installation can be kept compact, and the conventional drawbacks related to installation can be eliminated. Is.
In the surface treatment apparatus according to the present invention, the treatment tank is selected with respect to a total of three positions, that is, a neutral position in which the treatment tank is in an upright posture and two inclined positions in which the treatment vessel is inclined at a relative reverse angle with the neutral position as a boundary. It is also possible to have tilting means for swinging so as to be selectable.

In this case, the treatment liquid recovery pipe of the treatment liquid supply means is provided in a state in which the treatment liquid in the treatment tank can flow out of the treatment tank when the treatment tank is in the inclined position to one side. The washing water recovery pipe of the water washing means is provided in such a state that the washing water in the treatment tank can flow out of the treatment tank when the treatment tank is in the inclined position to the other. And
By providing such a tilting means, surface treatment is performed with the treatment tank inclined to one side, water washing is carried out with the treatment tank inclined to the other, and the basket is placed in and out of the treatment tank as a neutral position. Depending on the case, it can be used properly such as dehydration.

In this case, operations such as surface treatment, water washing, dehydration, and basket loading / unloading can be efficiently performed and digested in each treatment tank, and further improvement in the treatment efficiency of the surface treatment work can be promoted. In addition, the treatment liquid recovery pipe mounting structure for the treatment liquid supply means and the cleaning water recovery pipe attachment structure for the water washing means are simplified to make the entire surface treatment equipment including the treatment tank compact. This leads to the advantage that can be further promoted.
The surface treatment apparatus according to the present invention preferably has a water tank that collects and stores the wash water drained from the treatment tank once supplied to the treatment tank by the water washing means. By doing in this way, it leads to the advantage which can further promote size reduction as the whole surface treatment apparatus.

In this case, the management tank and the water tank may be provided adjacent to each other, and a two-story structure in which a treatment tank is provided above the management tank and the water tank may be used.
That is, the surface treatment apparatus according to the present invention has a configuration in which the treatment liquid feeding means is already incorporated between the treatment tank and the management tank, and the water washing means is already incorporated between the treatment tank and the water tank. In order to install the surface treatment apparatus according to the invention, it will be possible to complete the installation and installation at the same time, and here no piping work is required to connect between the treatment tank and the management tank and between the treatment tank and the water tank. Absent.

Moreover, the occupation area required for installation is extremely compact with the management tank, the water tank, and the processing tank being two-story. From these things, all the conventional faults regarding installation can be improved and removed.
In addition, in the surface treatment apparatus according to the present invention, since the connection between the treatment tank and the management tank is short, the treatment liquid can always be kept in a stable best condition (particularly in terms of temperature management), and a high-quality surface treatment can be performed. In addition to being obtained, it is possible to shorten the time for taking in and out the processing liquid from the processing tank.

When the treatment liquid recovery pipe of the treatment liquid supply means is set to the inclined position on the side where the treatment liquid in the treatment tank flows out to the management tank, the treatment tank is disposed at a position below the inclination in the treatment tank. And the management tank may be provided in communication with each other. In addition, the cleaning water recovery pipe of the water washing means has a treatment tank and a water tank at a position on the lower side of the inclination in the treatment tank when the washing water in the treatment tank is at an inclined position on the side where the washing water flows out to the water tank. May be provided in a state of communicating with each other.
It is preferable that the surface treatment apparatus according to the present invention further includes a rotation driving unit for enabling rotation of the basket holding means with the center of the basket held by the basket holding means as a rotation axis.

  In the surface processing apparatus according to the present invention, the processing time is shortened and the processing efficiency in a series of surface processing operations is increased, so that the productivity of the object to be processed can be increased. Moreover, the occupation area for installation can be suppressed to be compact, and the apparatus can be made compact, thereby eliminating the conventional drawbacks related to installation.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 11 show a first embodiment of a surface treatment apparatus 1 according to the present invention, and FIG. 12 shows a surface treatment system 2 constructed by using a plurality of the surface treatment apparatuses 1. In this surface treatment system 2, a surface treatment step 3 and a dehydration step 5 are arranged in a series according to the treatment order, and a basket 6 (see FIG. 1 or the like) that accommodates an object to be processed is transferred between these steps according to the arrangement order. It becomes the composition which is done. In the illustrated example, the load station 8 is attached to the start position of the surface treatment system 2, and the unload station 9 is attached to the end position. Each of these stations 8 and 9 is not essential.

The basket 6 has a bowl shape having a bottom plate 6a and a peripheral wall 6b that rises around the bottom plate 6a. The bottom plate 6a and the peripheral wall 6b are formed of a porous plate, a net structure material, etc. and have water permeability. It has become. As the peripheral wall 6b, one having an upper half formed in a straight cylindrical shape and a lower half formed in a tapered cone shape with a lower recess is used.
The basket 6 is transferred by, for example, an elevating type handling device 7 that can move along an upper track (not shown).
In the illustrated example, the degreasing step 3a, the pickling step 3b, the electrolysis step 3c, the plating first to fifth steps 3d to 3h, the nitric acid step 3i, and the trivalent white step 3j are employed as the surface treatment step 3. The dehydration process 5 is arranged to conclude the final stage of all processes. The plating first to fifth steps 3d to 3h are, for example, zinc plating. The object to be treated is applicable to various things including bolts and nuts, and is not limited at all.

In this surface treatment system 2, it should be noted that a water washing step is usually (or must be) associated with the secondary side immediately after each surface treatment step 3 (3 a to 3 j). However, since the surface treatment apparatus 1 according to the present invention can obtain a sufficient cleaning effect by the operation in the water washing mode that is performed independently as described later, this water washing step is omitted, and the surface treatment step. 3 (3a to 3j) are installed in a direct adjacency relationship.
In addition, in the surface treatment apparatus 1 according to the present invention, a sufficient dehydration effect can be obtained by operation in a dehydration mode that is performed independently as described later. Rather, it can be omitted. To the last, in the present embodiment, in the final stage after a series of surface treatments, an operation mode in which complete dehydration of an object to be processed is performed intensively (a minimum dehydration effect is kept between each process). Therefore, only the dehydration step 5 is attached at the final stage.

The surface treatment apparatus 1 according to the present invention is a process that requires special measures (acid resistance, etc.) for the treatment liquid such as the pickling process 3b among the surface treatment process 3 (3a to 3j) and the dehydration process 5. It is possible to adopt the same configuration in all the steps except for the above, and it is also possible to selectively adopt the surface treatment apparatus 1 according to the present invention only in any one of the steps. Of course, if a special measure (acid resistance etc.) is applied to the treatment liquid, it is possible to adopt the surface treatment apparatus 1 having the same configuration in all steps of the surface treatment step 3 (3a to 3j) and the dehydration step 5. is there.
As shown in FIGS. 1 to 4, the surface treatment apparatus 1 according to the present invention includes a treatment tank 10 capable of storing a treatment liquid and a treatment tank 10 in which the basket 6 can be held in the treatment tank 10. And a basket holding means 11 provided. The basket means 11 is rotatable, and the surface treatment apparatus 1 also has a rotation drive unit 12 that transmits a rotational force to the basket holding means 11.

A management tank 13 is provided below the processing tank 10. A water tank 14 is provided at the lower part of the processing tank 10. The water tank 14 is provided at the same height as the management tank 13 and is disposed adjacent to each other. The management tank 13 is formed to have a size that protrudes to one side of the processing tank 10 with the central lower part of the processing tank 10 as a boundary, and the water tank 14 is the other of the processing tank 10 with the central lower part of the processing tank 10 as a boundary. It is formed in a size that projects to the side.
In other words, the treatment tank 10 is provided in a two-story structure with the management tank 13 and the water tank 14 as a basis and straddling the upper portions of both tanks.

The upper portion of the processing tank 10 is opened so that the basket 6 can be carried in and out, and a lid 16 is provided in the upper open portion. The lid 16 can be opened and closed by a lid opening / closing device 17 such as a fluid pressure cylinder. A cathode 20 is provided for the lid 16. The cathode 20 is inserted into the basket 6 by the movement of closing the lid 16 when the lid 16 is closed in a state where the basket 6 is accommodated in the processing tank 10, and a workpiece is loaded in the basket 6. If so, it comes into contact with the workpiece.
The lid 16 is provided with a swing fulcrum part 70 along the upper end side of the processing tank 10 facing the side where the management tank 13 projects, and can be freely opened and closed, and around the swing fulcrum part 70. And a swing lever 71 projecting to the right. The lid opening / closing device 17 includes a driving tool 72 that pushes and pulls the swing lever 71 of the lid 16. In this embodiment, a fluid pressure cylinder is used for the driving tool 72.

As described above, the swing fulcrum portion 70, the swing lever 71, the driving tool 72 of the lid opening / closing device 17 and the like are disposed on the side of the treatment tank 10 where the management tank 13 protrudes (or the side where the water tank 14 protrudes). If it does, these will be in the state accommodated in the upper area of the management tank 13 (or water tank 14). This is beneficial for making the surface treatment apparatus 1 compact.
As described above, the structure in which the cathode 20 is provided on the lid 16 has not been proposed as a conventional surface treatment apparatus, and is a new structure. By providing the cathode 20 with respect to the lid 16, the arrangement of the cathode 20 and the application of current (wiring) to the cathode 20 can be facilitated, space saving can be achieved, and the contact of the cathode 20 with the object to be processed can be ensured. Various advantages such as the above can be obtained.

The cathode 20 is held so as to be movable up and down with respect to the lid 16, and the cathode 20 is raised and lowered as needed when the lid 16 is opened and closed (including the case of being completely pulled out from the lid 16). Also good. The vertical movement of the cathode 20 at this time can also be mechanically performed by, for example, a fluid pressure cylinder or a motor drive mechanism.
The basket holding means 11 has a mounting table 25 that supports the bottom plate 6 a of the basket 6. The basket holding means 11 has an enclosing wall 26 that surrounds the peripheral wall 6 b of the basket 6. The surrounding wall 26 is arranged so as to rise around the mounting table 25, and the mounting table 25 and the surrounding wall 26 are interconnected. The basket holding means 11 is provided with a tilting means 27.

The mounting table 25 is formed in a circular shape in plan view, and a support protrusion 25a (see FIG. 2) having a disk shape smaller in diameter than the bottom plate 6a of the basket 6 is provided at the center thereof. This support protrusion 25a ensures contact (support stability) with the bottom plate 6a.
As shown in FIGS. 5 and 6, the surrounding wall 26 is formed by standing a large number of support pillars 30 at predetermined intervals along the circumferential direction as a state surrounding the peripheral wall 6 b of the basket 6. Yes. The support pillars 30 are formed as plate pieces arranged so as to extend along the plate surface in a direction extending radially outward from the central portion of the basket 6.

Each support column 30 is arranged along the outer periphery of the mounting table 25 and is the same as the rotation center of the mounting table 25 (the same as “the center of the basket 6 (the center when the basket 6 is viewed in plan view)”). It can also be said that the plate surface is aligned along the direction extending radially outward from.
Since the surrounding wall 26 is formed as an aggregate of a large number of support pillars 30 in this way, the surrounding wall 26 is robust enough to withstand the lateral load applied by the basket 6 during high-speed rotation such as during dewatering. Has a structure. Further, the water permeability is sufficiently enhanced by the support columns 30. In addition, when the surrounding wall 26 is formed using a large number of support pillars 30 as described above, there is an advantage that the surrounding wall 26 can be manufactured at low cost.

  In the present embodiment, as shown in FIG. 7, the surrounding wall 26 is manufactured separately from an upper half body 26a having a straight short cylindrical shape and a lower half body 26b having a tapered bottom cone shape (inverted truncated cone shape). In addition, these are connected by bolting or welding. The upper half 26a has a structure in which two annular bodies 31a are connected to each other by a support pillar 30 that is a rectangular plate piece, and the lower half 26b is the same as that used in the upper half 26a. It has the structure which connected between the torus 31a and the torus 31b with a diameter smaller than this by the support pillar 30 made into the parallelogram-shaped board piece.

The surrounding wall 26 is formed with an inner diameter capable of holding a minute circumference with respect to the outer peripheral surface of the peripheral wall 6b of the basket 6 to such an extent that the basket 6 does not cause radial play during rotation by the rotation driving unit 12. Yes. Specifically, the surrounding wall 26 is formed with an inner diameter that prevents the circumference G between the surrounding wall 26 and the peripheral wall 6b of the basket 6 from exceeding 3 mm. The circumference G is preferably 2 mm or less.
In the present embodiment, as described above, the surrounding wall 26 is formed in the shape of a tapered cone corresponding to the peripheral wall 6b of the basket 6 so that the basket 6 is held by the basket holding means 11. Naturally, the inner peripheral surface of the surrounding wall 26 comes into contact with the outer peripheral surface of the peripheral wall 6b of the basket 6. Therefore, the perimeter G between the basket 6 and the peripheral wall 6b in the upper half 26a of the surrounding wall 26 is set to the above specified value.

By making the surrounding wall 26 into a tapered cone shape corresponding to the peripheral wall 6b of the basket 6, the contact between the inner peripheral surface of the surrounding wall 26 and the outer peripheral surface of the basket 6 can be ensured. This leads to reliable connection between the two. Therefore, the mounting table 25 is not necessarily required in the basket holding means 11.
When the basket 6 is held by the basket holding means 11 and the inner peripheral surface of the surrounding wall 26 in the basket holding means 11 and the outer peripheral surface of the peripheral wall 6b in the basket 6 come into contact with each other, the mounting table 25 in the basket holding means 11 The center of the surrounding wall 26 and the center of the basket 6 are automatically aligned. From these, the basket 6 and the basket holding means 11 (particularly the basket 6) lead to the advantage of being able to absorb the error of the dimensional accuracy. That is, the basket 6 or the like does not have to be manufactured with high accuracy, and even when the basket 6 or the like undergoes heat shrinkage deformation or some deformation during use, the operation as the surface treatment apparatus 1 is continued as it is. Will be able to.

As shown in FIGS. 1 and 2, in such a basket holding means 11, a rotating shaft 32 protrudes from the lower surface of the mounting table 25 so as to coincide with the center position of the surrounding wall 26. The rotating shaft 32 is rotatably held via a bearing 34 provided on the tank bottom 33 of the processing tank 10. The bearing 34 is waterproof to the processing liquid stored in the processing tank 10 and has chemical resistance to the processing liquid.
The rotation drive unit 12 is provided with a speed change means 40 that allows the rotation speed of the basket holding means 11 to be switched between a “processing speed suitable for surface treatment” and a “dehydration speed suitable for dewatering”. The processing speed is in the range of 2 rpm to 12 rpm (preferably 3 rpm to 10 rpm), and the dehydration speed is in the range of 180 rpm to 600 rpm (preferably 200 rpm to 500 rpm).

The speed change means 40 has a speed change circuit 42 that performs inverter control of a rotation drive motor 41 provided in the rotation drive unit 12. Therefore, as shown in FIG. 8, the acceleration and deceleration of the rotational drive motor 41 are controlled with a gradual increase / decrease tendency. As a result, inertial impacts (such as a sudden start and a sudden stop) do not occur with respect to the holding state of the basket 6 with respect to the basket holding means 11 and the object to be processed accommodated in the basket 6.
By the way, in this embodiment, the basket holding means 11 itself (the mounting table 25 and the surrounding wall 26) is formed of a conductor such as SS material and can be used as an anode. Accordingly, the rotary shaft 32 is connected to the mounting table 25 of the basket holding means 11 in an electrically insulated state, and the basket holding means 11 and the processing tank 10 are directly connected. It is designed not to conduct.

Further, in relation to the fact that the anode can be formed by the basket holding means 11 itself, the basket 6 is made of PVC, PP, PE resin material, or iron or stainless steel as a core material and then the above. A non-conductor is formed by coating with a resin material. As a result, the occurrence of a short circuit between the basket holding means 11 (anode) and the cathode 20 is suppressed as much as possible, and the surface treatment for the object to be processed is sufficiently prioritized.
Further, since the surrounding wall 26 of the basket holding means 11 has a large number of plate-like support pillars 30, the surface area as the surrounding wall 26, that is, the anode area is increased as much as possible. It has become. For this reason, the cathode-to-anode ratio is 1: 1, or the anode can be made larger than the cathode. Therefore, it is extremely useful in terms of shortening the surface treatment time and performing a high-quality surface treatment.

The tilting means 27 described above tilts the basket holding means 11 by tilting the processing tank 10 as a whole, and a neutral position that causes the processing tank 10 to be in an upright posture and a relative reverse with this neutral position as a boundary. It swings so that it can alternatively be selected with respect to a total of three positions including two tilt positions to be inclined at an angle.
In the neutral position, bringing the processing tank 10 into the upright posture means that the rotation axis of the basket 6 is in a vertical state (see FIG. 10 (A)). 6 can be taken in and out (the basket 6 is attached to and detached from the basket holding means 11), and a dehydration mode described later can be performed.

On the other hand, when the processing tank 10 is inclined in one inclined position, the rotation axis of the basket 6 is inclined obliquely to enter a processing mode described later (see FIG. 9B), and the other inclined position. When the processing tank 10 is tilted at a relative reverse angle, the rotation axis of the basket 6 is also tilted obliquely to enter the water washing mode described later (see FIG. 10B).
Such a tilting means 27 is disposed along a tilt axis (fulcrum axis) when tilting the processing tank 10 and has tilt support bases 73 at both side positions of the processing tank 10. The tilt support shaft 74 is bridged between the support base 73 and the side surface of the treatment tank 10. Needless to say, the tilting support shafts 74 on both sides of the treatment tank 10 are coaxially arranged.

For this reason, the entire processing tank 10 including the basket means 11 is held swingably around the tilting support shaft 74. For example, by providing a steering wheel 75 (see FIG. 3) or the like directly or indirectly via a gear device 76 with respect to one tilting support shaft 74, the processing tank 10 is tilted as a rotational operation of the steering wheel 75. Can do. Note that this tilting may be motorized by providing a motor drive device or the like instead of the handle wheel 75.
One of the inclined support bases 73 is installed in a portion of the management tank 13 that protrudes from the treatment tank 10 (or a portion of the water tank 14 that protrudes from the treatment tank 10). (Or in the upper area of the water tank 14). Therefore, it is useful for making the surface treatment apparatus 1 compact.

In the processing mode, the rotation driving unit 12 operates in a state where the basket 6 is inclined together with the processing tank 10 and the basket holding means 11, and the basket 6 is rotated at a slow speed. For this reason, in the basket 6, the workpiece is skillfully agitated by the rolling action due to the blunt rotation while being biased in a lump shape toward the lowermost corner (near the peripheral wall 6 b) on the bottom plate 6 a (the bottom plate 6 a is inclined). Become so. As a result, it is extremely useful in terms of shortening the surface treatment time and performing a high-quality surface treatment (a sufficiently thick surface treatment film can be obtained and a uniform thickness, etc.).
In the dewatering mode, the rotation driving unit 12 operates in a state where the basket 6 is in an upright (horizontal) state together with the processing tank 10 and the basket holding means 11, and the basket 6 is rotated at a high speed. For this reason, in the basket 6, the objects to be processed are uniformly scattered around the outer periphery of the bottom plate 6 a (the bottom plate 6 a is horizontal), and receive a stable and well-balanced high-speed rotation (centrifugal force). As a result, it leads to the advantage that dehydration can be performed reliably and rapidly.

  In the water washing mode, as in the processing mode, the rotation driving unit 12 operates in a state where the basket 6 is inclined together with the processing tank 10 and the basket holding means 11, and the basket 6 is rotated at a slow speed. Therefore, in the basket 6, the object to be processed is skillfully agitated under the rolling action due to the blunt rotation while being biased in a lump shape toward the lowermost corner (near the peripheral wall 6b) on the bottom plate 6a (the bottom plate 6a is inclined). Become so. As a result, it is extremely useful in that the washing time can be shortened and the treatment liquid can be surely washed off. The only difference from the processing mode is the direction of inclination. The rotation speed of the basket 6 can be changed as appropriate.

As shown in FIG. 4, the treatment tank 13 stores a treatment liquid, and is provided with a treatment liquid concentration adjusting unit (for example, a portion into which a dissolving material 44 such as zinc is introduced) 45 as necessary.
Between the processing tank 10 and the management tank 13, a processing liquid feeding means 46 is provided. The processing liquid feeding means 46 is, for example, a supply pipe 47 that feeds the processing liquid from the management tank 13 to the processing tank 10 (in communication with the inside of the processing tank 10 through the tilting support shaft 74 as shown in FIG. 3). And a pump 48 provided in the supply pipe 47 and a treatment liquid recovery pipe 49 for returning the treatment liquid from the treatment tank 10 to the management tank 13.

When the treatment liquid recovery pipe 49 is in an inclined position on the side where the treatment liquid in the treatment tank 10 flows out to the management tank 13, the treatment liquid in the treatment tank 10 can flow out of the treatment tank 10. It is provided in the state. Specifically, as shown in FIG. 9B and FIG. 3, the processing tank 10 and the management tank 13 are provided in communication with each other at a position below the inclination in the processing tank 10 in the inclined position. It has been.
The treatment liquid recovery pipe 49 may be a rigid pipe such as a pipe material or a soft pipe such as a hose, and is also formed to serve as an overflow pipe for regulating the treatment liquid water level in the treatment tank 10 to a constant water level. May be.

As described above, the management tank 13 is formed in a size that protrudes to the side of the processing tank 10 (see FIGS. 1 and 3). And in this management tank 13, the pump 48 of the process liquid supply means 46 is installed in the position projected to the side of the process tank 10. FIG. Further, a treatment liquid concentration adjusting unit 45 is also provided at this position.
The treatment liquid recovery pipe 49 may be provided with an open / close valve (not shown) that can be opened and closed by remote control. When this on-off valve is provided, the pump 48 is used for supplying the processing liquid from the management tank 13 to the processing tank 10, and the on-off valve is closed when the inside of the processing tank 10 reaches a predetermined water level. What is necessary is just to make it stop. To recover the processing liquid from the processing tank 10 to the management tank 13, the on-off valve may be opened to allow the processing liquid to flow down naturally. Of course, it is possible to use the pump 48 (or a separate pump dedicated for recovery) when the processing liquid is recovered from the processing tank 10 to the management tank 13.

When the on-off valve is not provided in the treatment liquid recovery pipe 49, the supply of the treatment liquid from the management tank 13 to the treatment tank 10 is made normal by continuous operation of the pump 48, thereby maintaining the inside of the treatment tank 10 at a constant water level. What should I do? When the processing liquid is recovered from the processing tank 10 to the management tank 13, the pump 48 is stopped and the processing liquid is allowed to flow down naturally. In this way, it is possible to appropriately change whether the specification is to provide an on-off valve or not.
As described above, the treatment liquid is supplied from the management tank 13 to the treatment tank 10 so that the basket 6 held in the treatment tank 10 is immersed in the treatment liquid. It is possible to switch the basket 6 held in the processing tank 10 back to the dry state without contacting the processing liquid. Therefore, the dehydration performed after the surface treatment can be performed at a unique timing for each processing tank 10 (it is not necessary to keep pace with the timing in the other processing tanks 10).

The treatment tank 10 is provided with water washing means 100. The water washing means 100 includes, for example, a supply pipe 101 (which is connected to a spray nozzle 105 provided on the lid 17 as shown in FIG. 3) for sending washing water from the water tank 14 to the treatment tank 10, and A pump 102 provided and a cleaning water recovery pipe 103 for returning the cleaning water from the treatment tank 10 to the water tank 14 may be provided.
The supply pipe 101 is not limited to the pipe connection to the spray nozzle 105, and passes through the other tilting support shaft 74 in the processing tank 10, similarly to the supply pipe 47 of the processing liquid supply means 46. You may make it communicate with (refer FIG. 3).

After the water tank 14 is once supplied to the treatment tank 10 by the washing means 100, the washing water discharged from the treatment tank 10 is collected and stored.
The cleaning water recovery pipe 103 allows the cleaning water in the processing tank 10 to flow out of the processing tank 10 when the cleaning water in the processing tank 10 is in an inclined position on the side where the cleaning water flows out to the water tank 14. It is provided in the state. Specifically, as shown in FIG. 10B and FIG. 3, the processing tank 10 and the water tank 14 are provided in communication with each other at a position on the lower side of the inclination in the processing tank 10 in the inclined position. ing.

The recovery pipe 103 for washing water may be a rigid pipe such as a pipe material or a soft pipe such as a hose, and is also formed to serve as an overflow pipe for restricting the washing water surface in the treatment tank 10 to a constant water level. May be.
As described above, the water tank 14 is formed in a size that protrudes to the side of the processing tank 10 (see FIGS. 1 and 3). And in this water tank 14, the pump 102 of the water washing means 100 is installed in the position projected to the side of the processing tank 10. FIG.
Note that the cleaning water recovery pipe 103 may or may not be provided with an on-off valve (not shown) that can be opened and closed by remote control. This is the same as the treatment liquid recovery tube 49.

Further, the water washing means 100 may be provided with a pipe so as to supply the washing water to the treatment tank 10 directly from a water supply facility or the like as appropriate without providing a supply pipe or a pump. In this case, the water tank 14 and the cleaning water recovery pipe 103 may be omitted, and the cleaning water used in the treatment tank 10 may be directly drained.
As shown in FIG. 9A, the operation status of the surface treatment apparatus 1 is first waited with the lid 16 opened in the treatment tank 10, and when the basket 6 is carried into the treatment tank 10, the lid 16 is moved. Closed. At the same time, the cathode 20 provided on the lid 16 is inserted into the basket 6.

Next, as shown in FIG. 9B, the treatment liquid whose concentration is adjusted in the management tank 13 is supplied from the management tank 13 to the treatment tank 10 via the supply pipe 47 (see FIG. 2 and the like) by the operation of the pump 48. The processing liquid in the processing tank 10 is set to a predetermined water level. Then, the processing tank 10 is tilted to one tilt position by the tilting means 27, and the basket 6 held by the basket holding means 11 is tilted in the same direction. Note that the treatment liquid may be supplied to the treatment tank 10 after the treatment tank 10 is inclined.
Thus, the objects to be processed in the basket 6 are biased to the lower portion of the inclined basket 6 and are immersed in the processing liquid. Further, the cathode 20 provided on the lid 16 and the workpiece in the basket 6 are in contact with each other. After being in these states, the rotation drive motor 41 provided in the rotation drive unit 12 rotates the basket holding unit 11 at a low speed (processing) while receiving inverter control by the transmission circuit 42 (see FIG. 1) of the transmission unit 40. Mode).

Here, since the basket 6 is maintained in contact with the surrounding wall 26 of the basket holding means 11 at least at one place in the circumferential direction (the lower portion in the inclined state), the basket 6 and the basket are held. The electrical conduction state between the means 11 (that is, the anode) is surely maintained.
In addition, since the surrounding wall 26 of the basket holding means 11 is formed in a tapered cone shape corresponding to the peripheral wall 6b of the basket 6, the inner peripheral surface of the surrounding wall 26 and the outer peripheral surface of the peripheral wall 6b in the basket 6 The contact between the basket 6 and the basket holding means 11 is ensured in this respect as well. Thus, by applying a voltage between the basket holding means 11 (anode) and the cathode 20, the surface treatment for the workpiece in the basket 6 is started.

After the elapse of a predetermined time required for the surface treatment (within 12 minutes is sufficient), the voltage application between the basket holding means 11 (anode) and the cathode 20 is released, and as shown in FIG. 41 is temporarily stopped. Then, as shown in FIG. 10A, the processing liquid in the processing tank 10 is collected into the management tank 13 and the processing tank 10 is emptied, and the processing tank 10 is erected as a whole by the tilting means 27 ( It is returned to the (horizontal) state. Either the recovery of the processing liquid or the upright transition of the processing tank 10 may precede.
After being in these states, the rotation drive motor 41 provided in the rotation drive unit 12 rotates the basket holding means 11 at a high speed (dehydration mode) while receiving inverter control by the transmission circuit 42 (see FIG. 1) of the transmission means 40. Dehydration is started.

During this dehydration, the object to be processed in the basket 6 is uniformly scattered on the bottom plate 6a of the basket 6 near the outer periphery thereof, and is stably and balanced at high speed (centrifugal force). Will receive. Therefore, reliable and quick dehydration is performed.
Further, when the basket holding means 11 starts high-speed rotation or stops from this high-speed rotation, the rotation drive motor 41 is converted into an inverter by a transmission circuit 42 (see FIG. 1) of the transmission means 40 as shown in FIG. Under the control, the acceleration and deceleration are controlled so as to gradually increase or decrease. Therefore, there is no inertial impact (instantaneous start, sudden stop, etc.) with respect to the holding state of the basket 6 with respect to the basket holding means 11 and the object accommodated in the basket 6, and the basket holding means. 11, No damage or the like occurs in the basket 6 and the workpiece.

After the elapse of a predetermined time required for dehydration (varies depending on the size, shape, amount, viscosity of the treatment liquid, etc.), the rotation drive motor 41 is temporarily stopped as shown in FIG. Then, as shown in FIG. 10B, the processing tank 10 is tilted to the tilt position opposite to that in the processing mode by the tilting means 27, and the basket 6 held in the basket holding means 11 is the same. Tilted in the direction. Note that the treatment liquid may be supplied to the treatment tank 10 after the treatment tank 10 is inclined.
Also at this time, the objects to be processed in the basket 6 are biased to the lower portion of the inclined basket 6 in a lump shape. Here, the washing means 100 starts supplying the washing water into the treatment tank 10, and the rotation drive motor 41 provided in the rotation drive unit 12 receives inverter control by the transmission circuit 42 (see FIG. 1) of the transmission means 40. The basket holding means 11 is rotated at a slow speed (or high speed). Note that the water washing means 100 may be set in advance so that the inside of the treatment tank 10 is stored up to a predetermined water level with the cleaning water, or the setting is such that the cleaning water is sprayed from the spray nozzle 105 without storing. It may be left. The washing water may be water or warm water, and may be appropriately used as a chemical solution depending on the case.

After the elapse of a predetermined time required for washing with water (depending on the size, shape, amount of the object to be treated, viscosity of the treatment liquid, etc.), the rotation drive motor 41 is temporarily stopped as shown in FIG. Then, as shown in FIG. 11A, the cleaning water in the processing tank 10 is collected into the water tank 14 and the processing tank 10 is emptied, and the processing tank 10 is erected as a whole by the tilting means 27 (horizontal). ) Return to the state. Either the recovery of the washing water or the upright transition of the treatment tank 10 may precede.
After these states are reached, the rotation drive motor 41 provided in the rotation drive unit 12 rotates the basket holding means 11 once again at high speed (under the inverter control by the transmission circuit 42 (see FIG. 1) of the transmission means 40). Dehydration mode), and the second dehydration is started.

Then, after the second dehydration, as shown in FIG. 11B, the lid 16 of the processing tank 10 is opened and the basket 6 is carried out.
As is clear from the above detailed description, the surface treatment apparatus 1 according to the present invention not only has the processing liquid feeding means 46 and the processing liquid recovery pipe 49 but also the water washing means 100 and the cleaning water recovery pipe 103. Due to the configuration, it is possible to supply and recover the processing liquid into the processing tank 10 and supply and recover the cleaning water. Accordingly, after the surface treatment is performed in the treatment tank 10, the water washing can be continuously performed without taking out the basket 6.

Therefore, in the surface treatment apparatus 1 according to the present invention, a dedicated treatment apparatus for washing with water can be omitted, and the labor of putting in and out of the basket 6 and the transfer between the surface treatment apparatuses 1 is greatly increased. Can be reduced. As a result, the processing time can be greatly shortened, the processing efficiency in a series of surface processing operations can be increased, and the productivity of the object to be processed can be increased.
Moreover, since a dedicated processing device for washing with water is unnecessary, as a group of devices for performing a series of surface treatment operations, the occupied area for the installation can be kept compact, and the conventional drawbacks related to the installation can be wiped out. .

When the tilting means 27 is provided, surface treatment is performed with the treatment tank 10 inclined to one side, water washing is performed with the treatment tank 10 inclined to the other, and the basket is placed with the treatment tank 10 in the neutral position. 6 can be used in different ways, such as loading and unloading and dehydration, so that the surface treatment, water washing, dehydration, and loading and unloading of the basket 6 can be efficiently performed and digested in each surface treatment apparatus 1 (treatment tank 10). As a result, further improvement in the processing efficiency of the surface treatment work can be promoted.
If the processing liquid feeding means 46 is provided between the processing tank 10 and the management tank 13 and the water washing means 100 is provided between the processing tank 10 and the water tank 14, it is carried into the installation place at the time of installation. The installation can be completed at the same time, and there is no need for any piping work to connect the treatment tank 10 to the management tank 13 or the water tank 14 here.

If the management tank 13 and the water tank 14 and the processing tank 10 are two-story, the occupied area required for installation can be made extremely compact, so that all the conventional drawbacks related to installation can be improved and removed.
Furthermore, since the connection between the treatment tank 10 and the management tank 13 is short, the treatment liquid can always be kept in a stable best condition (particularly in terms of temperature management), and a high-quality surface treatment can be obtained. Thus, it is possible to shorten the time for taking in and out the processing liquid with respect to 10.
In addition, the directionality (the rocking | fluctuation direction of the processing tank 10) when tilting the processing tank 10 between two inclination positions and the arrangement | positioning direction which makes the management tank 13 and the water tank 14 mutually adjoin are as shown in FIG. It is good also as what is set not as what is made into a planar view orthogonal relationship but a planar view parallel relationship as shown in FIG.

14 and 15 show a second embodiment of the surface treatment apparatus 1 according to the present invention, and FIG. 16 shows a surface treatment system 2 constructed by using a plurality of the surface treatment apparatuses 1.
The surface treatment apparatus 1 according to the second embodiment is different from the first embodiment in that two basket holding means 11 are provided for one treatment tank 10. Other configurations and operational effects are substantially the same as those in the first embodiment.
FIG. 17 shows a third embodiment of the surface treatment apparatus 1 according to the present invention, in which three basket holding means 11 are provided for one treatment tank 10, and FIG. 18 shows the present invention. 4 shows a fourth embodiment of the surface treatment apparatus 1 according to the present invention, and four basket holding means 11 are provided for one treatment tank 10. Thus, how many basket holding means 11 are provided for one processing tank 10 is not limited.

In the surface treatment apparatus 1 (FIG. 17) of the third embodiment, the lid 16 provided in the central treatment tank 10 is connected to the lid 16 of the treatment tank 10 shown at the left end in FIG. It has been done. Therefore, when the lid opening / closing device 17 of the processing tank 10 shown at the left end operates, the lids 16 of the left processing tank 10 and the central processing tank 10 are opened and closed together.
A flat gear 77 is provided at a portion (hinge portion) where the foldable lids 16 are connected to each other so as not to rotate with respect to the individual lids 16 and the flat gears 77 mesh with each other. It is said that. For this reason, when one lid 16 performs an opening / closing operation, the drive for the opening / closing operation is transmitted to the other lid 16.

In the surface treatment apparatus (FIG. 18) of the fourth embodiment, the lids 16 are foldable (and flat) in the treatment tank 10 shown at the left end in FIG. 18 and the processing tank 10 shown at the right end in FIG. 18, the lids 16 can be folded together (and the flat gear 77 is engaged). Has been.
In addition, in the surface treatment apparatus 1 (FIG. 17) of the third embodiment and the surface treatment apparatus (FIG. 18) of the fourth embodiment, a rotation drive unit 12 with a rotation drive motor 41 is provided for each treatment tank 10. (The transmission means 40 is partly omitted in order to prevent complication of the drawing), but the rotation drive unit 12 is shared in a state where the drive can be distributed to the plurality of treatment tanks 10. It is also possible to configure.

By the way, the present invention is not limited to the above embodiments, and can be appropriately changed according to the embodiments.
The basket 6 is not limited to the tapered shape of the lower dent, and the peripheral wall 6b may have a straight cylindrical shape (so-called squirrel shape). Further, the bottom plate 6a and the peripheral wall 6b may be formed of punched metal or a net material and have water permeability.
In the present invention, the type of surface treatment is not limited at all. Examples include so-called electrodeposition (coating performed by applying a voltage) and coating treatment after plating. Further, the object to be processed is not limited at all.

It is the sectional side view (equivalent to the AA arrow line view of FIG. 12) which showed 1st Embodiment of the surface treatment apparatus which concerns on this invention. It is the BB sectional view taken on the line of FIG. It is CC line arrow line view of FIG. It is the FF sectional view taken on the line of FIG. It is the DD sectional view taken on the line of FIG. It is the E section enlarged view of FIG. It is the perspective view which decomposed | disassembled and showed the surrounding wall of the basket holding means. It is a figure explaining rotation control of a basket holding means. It is operation | movement explanatory drawing of a surface treatment apparatus, (A) is a carrying-in stage of a basket, (B) is a surface treatment stage. It is operation | movement explanatory drawing of a surface treatment apparatus, (A) is a 1st spin-drying | dehydration stage, (B) is a water washing stage. It is operation | movement explanatory drawing of a surface treatment apparatus, (A) is a 2nd spin-drying | dehydration stage, (B) is a basket carrying-out stage. It is a top view of the surface treatment system constructed by adopting the surface treatment apparatus of the first embodiment according to the present invention. It is the top view (figure drawn easily compared with FIG. 3) which showed the example of another arrangement | positioning with a management tank and a water tank in the surface treatment apparatus which concerns on this invention. It is the sectional side view (equivalent to the HH arrow line view of FIG. 16) which showed 2nd Embodiment of the surface treatment apparatus which concerns on this invention. It is the JJ arrow line view of FIG. It is a top view of the surface treatment system constructed by adopting the surface treatment apparatus of the second embodiment according to the present invention. It is the sectional side view which showed 3rd Embodiment of the surface treatment apparatus which concerns on this invention. It is the sectional side view which showed 4th Embodiment of the surface treatment apparatus which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Surface treatment apparatus 2 Surface treatment system 6 Basket 10 Treatment tank 11 Basket holding means 12 Rotation drive part 13 Management tank 14 Water tank 27 Tilt means 49 Treatment liquid recovery pipe 100 Washing means 103 Washing water recovery pipe

Claims (6)

A treatment tank (10) capable of storing a treatment liquid;
Basket holding means (11) provided in the processing tank (10) so as to be able to hold the basket (6) containing the object to be processed in the processing tank (10);
A management tank (13) for storing and treating the quality of the processing liquid used in the processing tank (10);
A processing liquid feeding means (46) provided so as to be able to supply the processing liquid from the management tank (13) to the processing tank (10);
Water washing means (100) provided so that washing water can be supplied into the treatment tank (10),
The processing liquid feeding means (46) has a processing liquid recovery pipe (49) for recovering the processing liquid in the processing tank (10),
The surface treatment apparatus, wherein the water washing means (100) has a washing water recovery pipe (103) for collecting the washing water in the treatment tank (10). The treatment tank (10) can be alternatively selected from a total of three positions, that is, a neutral position for bringing the treatment tank (10) into an upright posture and two inclined positions for making an inclined posture at a relative reverse angle with the neutral position as a boundary. Tilting means (27) for swinging
The treatment liquid recovery pipe (49) of the treatment liquid supply means (46) allows the treatment liquid in the treatment tank (10) to be disposed in the treatment tank (10) when the treatment tank (10) is in the inclined position to one side. ) In a state that can flow out of the tank,
The cleaning water recovery pipe (103) of the water washing means (100) is configured so that the cleaning water in the processing tank (10) is stored in the processing tank (10) when the processing tank (10) is inclined to the other side. The surface treatment apparatus according to claim 1, wherein the surface treatment apparatus is provided in a state in which it can flow out.   It has the water tank (14) which collect | recovers and stores the wash water drained from the said processing tank (10) after being once supplied to the processing tank (10) by the said water washing means (100). The surface treatment apparatus according to claim 1 or 2.   The management tank (13) and the water tank (14) are provided adjacent to each other and have a two-story structure in which the treatment tank (10) is provided above the management tank (13) and the water tank (14). The surface treatment apparatus according to claim 3, wherein When the processing liquid in the processing tank (10) is set to the inclined position on the side where the processing liquid flows out to the management tank (13), the processing tank (10) A treatment liquid recovery pipe (49) of the treatment liquid supply means (46) is provided in a state of communicating with the management tank (13).
When the cleaning water in the processing tank (10) is set to the inclined position on the side where the washing water flows out to the water tank (14), the processing tank (10) and the water tank are positioned at the lower side of the inclination in the processing tank (10). (14) A surface treatment apparatus characterized in that a washing water recovery pipe (103) of the washing means (100) is provided in a state of communicating with (14).   It has a rotation drive part (12) for enabling rotation of the basket holding means (11) with the center of the basket (6) held by the basket holding means (11) as a rotation axis. The surface treatment apparatus according to any one of claims 1 to 5.

Images