JP2000144498A - Treated body moving type continuous surface treating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a continuous surface treating device in which, e.g. treating soln. is applied only to the inner surface of a cylindrical object, particularly a continuous treating device in plating stage, solving the problems of the increase of the carrying out of chemicals, the amt. of cleaning water and the amt. of waste water to be treated, capable of being made compact and capable of reducing the workload of man-power. SOLUTION: This device is provided with a body to be treated constituted of an article having a through hole, to both the ends of which article jigs are mounted for passing treating soln. into the inner surface of the article, each treating unit (261, 262, 263, 264 and 265) for executing the specified treating stage composed of plural soln. treating operations, in which the different treating units are arranged in the order of the treating stages per king of the specified treating stages and a transferring means for transferring the body to be treated to the each treating unit. Each unit is provided with a connecting jig capable of being connected to the jig of the transferred body to be treated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a continuous surface treatment apparatus for continuously applying a plurality of treatment liquids to an inner surface of an article having a through hole, for example, an inner surface of a cylindrical article, and in particular, pretreatment and plating. The present invention relates to a plating step continuous processing apparatus for continuously performing a plating step including processing.

[0002]

2. Description of the Related Art Conventionally, in a plating process, a pretreatment and a plating treatment have been performed by sequentially immersing in a liquid tank for each treatment (immersion method). For example, in an example for applying chromium plating to an alloy steel, the following steps are employed for pretreatment and plating.

Electrolytic degreasing → water washing → electropolishing → water washing → desmutting → water washing → activation → water washing → chromium plating → water washing Therefore, in order to perform the above plating process, immersion filled with the treatment liquid used in each treatment is required. Since the processing is performed by sequentially immersing the work in the liquid tank, the scale of the processing apparatus, the equipment space of the processing apparatus, the moving apparatus of the work, and the like are large.

On the other hand, when the plating step is performed only on the inner surface of the cylindrical article, the processing liquid adheres to an unnecessary portion of the outer surface of the cylinder in the conventional immersion method.
There were problems such as an increase in the amount of washing water and an increase in the amount of wastewater treatment.

[0005]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a continuous surface treatment apparatus in which a treatment liquid is applied only to the inner surface of an article having a through hole, for example, the inner surface of a cylindrical article, and more particularly, a continuous treatment apparatus for a plating process. A continuous surface treatment apparatus that does not have the problem of taking out chemicals contained in the processing liquid, increasing the amount of cleaning water and the amount of wastewater treatment, can be made compact, and can reduce the amount of manual work, especially the plating process It is an object to provide a continuous processing device.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, an object-moving continuous surface treatment apparatus according to the present invention comprises:
An object to be processed, which is provided with a jig for passing a processing liquid through the inner surface of the article to both openings of the article having through-holes, and for performing a specific processing step including a plurality of liquid processing operations A processing unit, comprising: a processing unit in which different processing units are arranged for each type of a specific processing step in the order of the processing steps; and transfer means for transferring the object to be processed to each processing unit. Each of the processing units includes a connection jig that can be connected to a jig of the transferred object to be processed.

[0007] The present invention is an object-moving continuous surface treatment apparatus suitable for continuously treating the inner surface of an article having a through-hole with a plurality of treatment liquids.
Suitable for pre-treatment and plating in the plating process.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a conceptual view of an object to be plated on which a jig used in a continuous object treating type continuous surface treatment apparatus of the present invention is mounted. Here is an example. In FIG. 1, reference numeral 1 denotes a body to be plated, 2 a jig mounted on both openings of the body to be plated, 3 a plating surface, and 4 a treatment liquid. The treatment liquid 4 used in each of the pretreatment and plating processes is supplied to the plating surface 3 on the inner surface of the plating object 1 through the jig 2 in the direction of the arrow, thereby forming the plating object. 1, only the inner surface can be plated.

FIG. 2 is a conceptual diagram showing a state in which an ultrasonic vibrator 5 is further mounted on the outer peripheral surface of the plate 1 on which the jig 2 of FIG. 1 is mounted. In each process of the plating process, the processing efficiency can be increased by the oscillation of the ultrasonic transducer 5.

FIG. 3 shows an embodiment in which the object 1 and the jig 2 are connected to a power supply device 6. The + terminal 9 of the power supply 6
The anode 8 and the jig 2 are connected to an anode 8 inserted into the body 1 to be plated mounted on the jig 2.
Is electrically insulated through On the other hand, the negative terminal 10 of the power supply device 6 is electrically connected to the body 1 to be plated,
During each electrolytic treatment, an electrolytic potential is applied to the anode 8.

FIG. 4 is a conceptual view of a moving object continuous surface treatment apparatus according to the present invention, and mainly shows a state in which a plating object is applied to each processing apparatus. The continuous surface treatment apparatus includes processing units 26 divided for each process, and the object to be plated 1 is moved to a specific processing unit 26 for each process, and is mounted to perform a specific process. I have.

In FIG. 4, jigs 21 and 22 are mounted on openings at both ends of a body 1 to be plated. An ultrasonic vibrator 5 may be mounted on the outer periphery of the body 1 to be plated.
The body 1 to which the jigs 21 and 22 are mounted is a jig 2
2 and is supported by the moving wheels 24 of the cart 23,
Can be moved on the attached rail 25 to move the plated object 1 to a fixed position of each processing unit 26. Each processing unit 26 in FIG. 4 includes a processing liquid supply line 27 for supplying a processing liquid to the plate 1 and a processing liquid return line 28 for returning the processing liquid discharged from the plate 1 to each processing unit 26. Having. The jig 22 attached to the body 1 to be plated is provided at the end of the processing liquid supply line 27.
A connection jig 29 that can be connected to the jig 21 attached to the plate 1 is provided at the end of the processing liquid return line 28. The connection jigs 29 and 30 are arranged so as to be movable in the longitudinal direction of the body 1 so as to be connectable to the jigs 21 and 22.

FIG. 5 shows a movable object-to-be-processed object according to the present invention, in which a plating step including a pre-plating process and a plating process can be continuously performed on the object 1 to which the jigs 21 and 22 are mounted. 1 shows a continuous surface treatment apparatus. The continuous surface treatment apparatus includes a rail 25 for allowing the plated object 1 to move to each processing unit, a degreasing unit 261, a polishing unit 262, a desmutting unit 263, and an activation unit 2.
64, and a plating unit 265.

Before the object to be plated 1 is applied to the continuous surface treatment apparatus, jigs 21 and 22 are attached, and the object to be plated 1 is set on a carriage 23 having moving wheels 24. In order to enhance each processing effect, an ultrasonic vibrator 5 may be mounted on the outer periphery of the body 1 to be plated. Dolly 23 to rail 2
5 and manually or automatically moved to a fixed position of each processing unit 26 and then stopped. Next, the connection jig 29
1 to 295 and 301 to 305 are manually or automatically connected and fixed via jigs 21 and 22 at both ends of the object 1 to be plated.
When the processing in one processing unit (for example, the degreasing unit 261) is completed, the next processing unit (for example,
The processing moves to the polishing unit 262), and the processing is subsequently performed.
In each processing unit 26, after performing each processing, that is, degreasing processing, polishing processing, desmutting processing, activation processing, and plating processing, connection jigs 291-295, 301-3
Removed from 05. Each processing unit 26 can be automatically and comprehensively controlled by the integrated controller 70.

FIG. 6 shows a degreasing unit 261. The degreasing unit 261 includes an electrolytic degreasing liquid tank 61 storing the electrolytic degreasing liquid, an electrolytic degreasing liquid supply line 611 for supplying the electrolytic degreasing liquid from the electrolytic degreasing liquid tank 61, and an electrolytic degreasing liquid supply line 611. A pump 31 disposed, a heater 46 for heating the hot water, a hot water supply line 612 for supplying hot water, a pump 32 provided on the hot water supply line 612, a hot water Washing water supply line 613 for supplying water, pump 33 provided on washing water supply line 613, valve 49 for switching the treatment liquid from each supply line, and the amount of treatment liquid supplied to connection jig 291. Unit 54 for measuring the flow rate and the degreasing unit controller 7 for controlling the degreasing unit 261
1 is comprised.

FIG. 7 shows the polishing unit 262. The polishing unit 262 includes an electropolishing liquid tank 62 storing the electropolishing liquid, an electropolishing liquid supply line 621 for supplying the electropolishing liquid from the electropolishing liquid tank 62, and an electropolishing liquid supply line 621. A pump 34 disposed, a heater 47 for heating the hot water, a hot water supply line 622 for supplying hot water, a pump 35 provided on the hot water supply line 622, a hot water Water supply line 623 for supplying water, the pump 36 provided on the rinse water supply line 623, the valve 50 for switching the processing liquid from each supply line, and the amount of the processing liquid supplied to the connection jig 292. Flow meter 55 to be measured and polishing unit 2
Polishing unit controller 72 for controlling 62
It is composed of

FIG. 8 shows the desmutting unit 263.
The desmutting unit 263 includes a desmutting liquid tank 63 storing the desmutting liquid, and a desmutting liquid supply line 6 for supplying the desmutting liquid from the desmutting liquid tank 63.
31, a pump 37 disposed on the desmutted liquid supply line 631, a heater 48 for heating the rinse water, a rinse water supply line 632 for supplying the rinse water, and the rinse water supply line A pump 38 provided on the 632, a rinsing water supply line 633 for supplying rinsing water, a pump 39 provided on the rinsing water supply line 633, a valve 51 for switching the processing liquid from each of the supply lines, connection Flow meter 5 for measuring the amount of processing liquid supplied to jig 293
6 and a desmutting unit controller 73 for controlling the desmutting unit 263.

FIG. 9 shows the activation unit 264. The activation unit 264 includes an activation liquid tank 64 storing the activation liquid, an activation liquid supply line 641 for supplying the activation liquid from the activation liquid tank 64, and an activation liquid supply line 641 on the activation liquid supply line 641. , A flush water supply line 642 for supplying flush water and the flush water supply line 6
A pump 41 provided on the pure water supply line 643 for supplying pure water, a pump 42 provided on the pure water supply line 643, a valve 52 for switching the processing liquid from each supply line, and connection It comprises a flow meter 57 for measuring the amount of the processing liquid supplied to the jig 294 and an activation unit controller 74 for controlling the activation unit 264.

FIG. 10 shows the plating unit 265. The plating unit 265 includes a plating solution tank 65 storing a plating solution, a plating solution supply line 651 for supplying a plating solution from the plating solution tank 65, and a pump 43 disposed on the plating solution supply line 651. A rinsing water supply line 652 for supplying rinsing water, a pump 44 provided on the rinsing water supply line 652, a pure water supply line 653 for supplying pure water, and a pure water supply line 653 are provided on the pure water supply line 653. Pump 45, a valve 53 for switching the processing liquid from each supply line, a flow meter 58 for measuring the amount of the processing liquid supplied to the connection jig 295, and a plating unit controller 75 for controlling the plating unit 265. ing.

The processing in the object moving continuous surface treatment apparatus of the present invention comprising the above-described processing units is performed as follows.

Plated object 1 moving on rail 25
Are connection jigs 291 and 30 of the degreasing unit 261 of FIG.
1 is fixedly connected to jigs 21 and 22 via
By the switching of 9, the electrolytic degreasing liquid is supplied from the electrolytic degreasing liquid tank 61 to the internal space of the body to be plated through the electrolytic degreasing liquid supply line 611, and the electrolytic degreasing treatment is performed. Then valve 4
9, the hot water is adjusted to a temperature corresponding to the temperature of the electrolytic degreasing solution by the heater 46, and the hot water is supplied to the hot water supply line 612.
Is supplied to the internal space of the object to be plated and the hot water is washed. Next, by switching the valve 49, the normal-temperature rinsing water is supplied to the internal space of the body to be plated through the rinsing water supply line 613, and the rinsing is performed. The timing of these processes is controlled by the degreasing unit controller 71.

Next, after the degreasing process is completed, the object to be plated, which has moved on the rail 25, is placed in the polishing unit 262 shown in FIG.
Are connected and fixed to the connection jigs 292 and 302 via the jigs 21 and 22, and the electrolytic polishing liquid is supplied from the electrolytic polishing liquid tank 62 to the internal space of the body to be plated through the electrolytic polishing liquid supply line 621 by switching the valve 50. The supplied electrolytic polishing process is performed. Next, by switching the valve 50, the heater 47 is switched.
The washing water adjusted to a temperature corresponding to the temperature of the electropolishing liquid is supplied to the internal space of the object to be plated through the washing water supply line 622 to perform washing. Next, by switching the valve 50, the rinsing water at normal temperature is supplied to the inner space of the body to be plated through the rinsing water supply line 623, and the rinsing is performed. The timing of these processes is determined by the polishing unit controller 7.
Controlled by 2.

Next, after the polishing process, the object to be plated that has moved on the rail 25 is connected and fixed to the connection jigs 293 and 303 of the desmutting unit 263 in FIG. By switching the valve 51, the desmutting liquid is supplied from the desmutting liquid tank 63 through the desmutting liquid supply line 631 to the internal space of the object to be plated, and the desmutting is performed. Next, by switching the valve 51,
Hot water, whose temperature has been adjusted by the heater 48 to a temperature corresponding to the temperature of the desmutting liquid, is supplied to the internal space of the object to be plated through the hot water supply line 632 to perform hot water washing. Then
By switching the valve 51, normal-temperature rinsing water is supplied to the plating object internal space through the rinsing water supply line 633, and rinsing is performed. The timing of these processes is controlled by the desmutting unit controller 73.

Next, after the desmutting process is completed, the plated object 1 that has moved on the rail 25 is connected to the connection jigs 294 and 304 of the activation unit 264 shown in FIG.
And the activation liquid is supplied from the activation liquid tank 64 by switching the valve 52.
The substrate is supplied to the internal space of the object to be plated and the activation process is performed. Next, by switching the valve 52, normal-temperature rinsing water is supplied to the inner space of the plating object through the rinsing water supply line 642, and rinsing is performed. Then, pure water is supplied to the inner space of the plating object through the pure water supply line 643 to be washed. Is performed. The timing of these processes is controlled by the activation unit controller 74.

Next, after completing the activation process, the rail 25
Is fixed to the connection jigs 295 and 305 of the activation unit 265 of FIG. 10 via the jigs 21 and 22, and the plating liquid is discharged from the plating liquid tank 65 by switching the valve 53. The plating solution is supplied to the internal space of the object to be plated through the plating solution supply line 651 to perform the plating process. Next, by switching the valve 53, normal-temperature rinsing water is supplied to the inner space of the plating object through the rinsing water supply line 652, and rinsing is performed. Then, pure water is supplied to the inner space of the plating object through the pure water supply line 653 to be washed. Is performed. The timing of these processes is controlled by the plating unit controller 75.

FIG. 11 shows another method of the continuous moving surface treating apparatus shown in FIG. 5, in which two plating units 265 are provided. Since a longer time is required in the plating step than in other processing steps, a plurality of plating units 26 are required.
5 may be provided to improve the processing capability of the entire apparatus.

In the above-described method for moving the surface of the object to be transferred, the cleaning step involves first washing with hot water and then washing with cold water. By performing cleaning in combination, the acid and alkali of the chemical solution used in the plating step can be almost completely removed, and the total water flow can be reduced as compared with the case where only washing water is used. FIG. 12 shows the effect of the difference in the washing method when the electrolytic degreasing treatment was performed at a liquid temperature of 50 ° C., and then the hot water washing-water washing treatment or the water washing treatment was performed. (MS / m) and the amount of water flow (liter) on the horizontal axis, showing the above-mentioned effect when hot water and cold water are combined. The curve A indicated by the mark ■ is a plot of the electric conductivity when the hot water was washed at 50 ° C and the water was continuously washed at 25 ° C up to a water flow rate of 40 liters. This is a case where all the washing steps are performed at 25 ° C. with water. The electric conductivity of the pre-circulation hot water (27.5 mS / m) (ie, the hot water before passing through the plate) is shown by a fine broken line C, while the pre-circulation water (22.6) is used. ~ 22.9
mS / m) (that is, washing water before passing through the object to be plated) is indicated by a large broken line D.

According to FIG. 12, in the curve A, by flowing 40 liters of 50 ° C. hot water and then 40 liters of 25 ° C. water, a total of 80 liters, the electric conductivity is reduced to the same level as the pre-circulation water. I understand. That is, in this case, the acid and alkali can be almost completely removed by performing the washing step using a combination of hot water and hot water.

On the other hand, it can be seen from the curve B that even if a flow rate of nearly 100 liters flows, the electric conductivity does not decrease to the same level as that of the washing water before circulation. That is, in this case, the acid and alkali cannot be completely removed. However, although not shown in FIG. 12, if washing is continued with a large amount of water of 100 liters or more, acids and alkalis can be completely washed out, but compared with the case of the combination of hot water and washing water of the present invention. Therefore, a large amount of washing water is used. That is, in the case where washing is performed first with hot water and subsequently washing with hot water, the total water flow can be reduced as compared with the case where only the hot water is used.

[0030]

According to the continuous treatment apparatus of the present invention, the treatment liquid can be applied only to the inner surface of an article having a through-hole, for example, the inner surface of a cylindrical article. There is no problem such as an increase in the amount of wastewater and the amount of drainage of the processing solution, and a large-scale apparatus such as an immersion tank is not used, so that the apparatus becomes compact and the amount of manual work can be reduced.

In the present invention, since the object to be plated is moved to the predetermined position of each processing unit, the line for flowing the processing solution can be greatly reduced. Therefore, as compared with the case where the object to be plated is not moved, the processing liquid is circulated because the processing liquid is circulated, so that the processing liquids are not mixed, and the amount of cleaning water used and the amount of processing liquid drainage are reduced. Can be.

[Brief description of the drawings]

FIG. 1 is a conceptual view of an object to be plated on which a jig used in a moving object continuous continuous surface treatment apparatus of the present invention is mounted;
An example in which a cylinder is used as the body to be plated is shown.

FIG. 2 is a conceptual diagram showing a state in which an ultrasonic vibrator is further mounted on an outer peripheral surface of a body to be plated on which the jig of FIG. 1 is mounted.

FIG. 3 shows an aspect in which a body to be plated and a jig are connected to a power supply device.

FIG. 4 is a conceptual diagram of an object-to-be-processed moving continuous surface treatment apparatus of the present invention, mainly showing a state in which an object to be plated is applied to each processing apparatus.

FIG. 5 shows an object-moving continuous surface treatment apparatus of the present invention capable of continuously performing a plating step including a pre-plating process and a plating process on an object to be plated on which a jig is mounted.

FIG. 6 shows a degreasing unit.

FIG. 7 shows a polishing unit.

FIG. 8 shows a desmutting unit.

FIG. 9 shows an activation unit.

FIG. 10 shows a plating unit.

FIG. 11 shows another method of the moving object continuous surface treatment apparatus of FIG. 5, in which two plating units are provided.

FIG. 12 is a graph showing the effect of a difference in cleaning method between a hot water washing and a water washing or a water washing after electrolytic degreasing is performed at a liquid temperature of 50 ° C. (MS / m) is a graph in which the horizontal axis represents the amount of water flow (liter).

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 To-be-plated object 2 Jig 3 Plating surface 4 Processing liquid 5 Ultrasonic vibrator 6 Power supply device 7 Insulator 8 Anode 9 + Terminal 10 -Terminal 21,22 Jig 23 Dolly 24 Moving wheel 25 Rail 26 Processing unit 27 Processing liquid supply line 28 Processing liquid return line 29, 30, 291, 292, 293, 294, 29
5, 301, 302, 303, 304, 305 Connection jigs 31, 32, 33, 34, 35, 36, 37, 38, 3,
9, 40, 41, 42, 43, 44, 45 Pumps 46, 47, 48 Heaters 49, 50, 51, 52, 53 Valves 54, 55, 56, 57, 58 Flow meter 61 Electrolytic degreasing tank 62 Electropolishing liquid Tank 63 Desmutting liquid tank 64 Activating liquid tank 65 Plating liquid tank 70 General controller 71 Degreasing unit controller 72 Polishing unit controller 73 Desmutting unit controller 74 Activation unit controller 75 Plating unit controller 261 Degreasing unit 262 Polishing unit 263 Desmutting unit 264 Activation unit 265 Plating unit 611 Electrolytic degreasing liquid supply line 612, 622, 632 Hot water supply line 613, 623, 633, 642, 652 Rinse water supply line 621 Electropolishing liquid supply line 631 Dewatering Smut solution supply line 641 Activation solution supply line 643, 653 Pure water supply line 651 Plating solution supply line

Claims (2)

[Claims] An object having a through-hole provided with jigs for passing a processing liquid through the inner surface of the article at both openings of the article, and a specific processing comprising a plurality of liquid processing operations A processing unit for performing a process, wherein each processing unit is configured by arranging different processing units for each type of a specific processing step in the order of the processing steps, and a transfer for transferring the workpiece to each of the processing units. Wherein each of the processing units includes a connection jig which can be connected to a jig of the transferred object to be processed. 2. The apparatus according to claim 1, wherein the object to be processed is an object to be plated.