JP3064924B2 - Power supply control jig for electrolytic treatment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, electroplating or an electrolytic treatment such as anodizing or electrolytic coloring of an aluminum material. More specifically, the present invention relates to individual treatments set in the same electrolytic cell. The present invention relates to a power supply control jig for electrolytic processing that can change the thickness of a plating layer or an oxide film layer or change the color tone of a coloring process.

[0002]

2. Description of the Related Art For example, the anodizing treatment and electrolytic coloring treatment of aluminum profiles have hitherto been produced by relatively large-scale mass production equipment on the premise of securing a specified production volume. .

That is, several busbars made of a conductive material are bridged over a large-capacity electrolytic cell, a power supply is connected to the busbars, and a plurality of conductive hangers for suspending an object to be processed are hooked. Power is supplied to the object by electrical contact between the bus bar and the hanger, and the object is subjected to electrolytic treatment.

[0004]

However, in recent years,
As the types of film thickness specifications for anodic oxidation treatment and color specifications for electrolytic coloring treatment have increased, the transition of production form from small-kind mass-production type to multi-kind small-production type has been When small lot production less than the specified production volume is performed using such mass production type equipment, there is a problem that a loss occurs within one charge, and production yield and production efficiency are reduced. Solving such problems has been an issue for efficiently producing small lots and many kinds of products.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems associated with the shift to a high-mix low-volume production type in electrolytic processing such as anodizing and electrolytic coloring of aluminum profiles. It is an object of the present invention to provide a power supply control jig for electrolytic processing that can perform small lot multi-product production without lowering production efficiency even if large mold equipment is used.

[0006]

According to a first aspect of the present invention, there is provided a power supply control jig for electrolytic treatment, comprising a busbar connected to a power supply.
And the hanger that suspends the workpiece
And a detachable conductor that electrically disconnects the bus bar and the hanger by electrically connecting the bus bar and the hanger by bypassing the insulator. in the power supply control jig according to claim 2 as an embodiment of the power supply control jig according to the present invention, the insulator is configured to is mounted slidably on the bus bar, like the power supply control according to claim 3 as an aspect In the jig, the insulator is detachable, and in the power supply control jig according to claim 4 , connecting means for securing electrical contact with the bus bar and the hanger are provided at both ends of the conductor. The present invention is characterized in that such a configuration in the power supply control jig is used as means for solving the above-mentioned conventional problem.

[0007]

According to a first aspect of the present invention, there is provided a power supply control jig, comprising: an insulator for interrupting current supply between a bus bar and a hanger; and an electrical connection between the bus bar and the hanger bypassing the insulator. to connect from removable is made of a freely conductor, it will be powered by the object to be processed while attaching the conductor between the bus bar and the hanger, e.g.
Remove the conductor from the hanger that has reached the target processing time.
By this, the electrolytic treatment time is adjusted in units of hanger,
Hanger with thickness of plating layer and oxide film layer and color tone of electrolytic coloring
The unit will be different. Therefore, small lot, many kinds
Of large-scale production-type equipment
However, the production efficiency does not decrease. Also,
Structurally, the insulator and the conductor that bypasses the insulator
Is very simple, so it is extremely cost effective.
Will be useful.

In the power supply control jig according to the second aspect of the present invention, since the insulator is slidably mounted on the bus bar, the size of the object to be processed and the simultaneous production can be improved. This makes it easy to respond to changes in the number of varieties.

In the power supply control jig according to the third aspect of the present invention, since the insulator is detachable from the busbar or the hanger, it is possible to cope with a production mode such as a change in the number of types of products to be simultaneously produced. It will be easy.

In the power supply control jig according to the fourth aspect of the present invention, since the connecting means for connecting the bus bar and the hanger is provided at both ends of the conductor, the electrical connection to the bus bar and the hanger is ensured. At the same time, attachment and detachment to and from the bus bar and the hanger become easy and quick.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below based on embodiments.

Embodiment 1 As Embodiment 1, a power supply control jig according to the present invention is used in electrolytic coloring of an aluminum alloy.
Next, an example in which different colors are simultaneously colored in the same electrolytic cell will be described.

First, an extruded member made of an aluminum alloy is subjected to a pretreatment such as degreasing, etching and smut treatment in a conventional manner, and then a sulfuric acid concentration of 130 g / L (13
%), An anodizing treatment for 40 minutes at a voltage of 17 V and a current density of 110 A / m ² in an electrolytic bath at a liquid temperature of 20 ° C. to form an oxide film of about 13 μm on the surface of the profile.

The aluminum alloy profiles on which the anodic oxide film has been formed are divided into six groups according to the color tone specification, and set in an electrolytic bath for electrolytic coloring.

FIG. 1A shows an electrolytic cell for electrolytic coloring used in one embodiment of the power supply control method according to the present invention. The electrolytic cell 1 shown in FIG. The counter electrodes 2 and 2 made of nickel are provided at positions near both ends, and nickel sulfate 150 g / L (1
5%) and 15 g / L (1.5%) of boric acid, and is stored at a temperature of 30 ° C.

On the electrolytic cell 1, three bus bars 3 (3a, 3b, 3b) connected to the negative electrode side of the power supply device, respectively.
3c), and these busbars 3a, 3b,
As shown in FIG. 1B, four hangers 4 are respectively hung on 3c, and two sets of workpieces W can be suspended from one bus bar. It has become.

Each bus bar 3a, 3b, 3c has a power supply control according to the present invention, as shown in FIG.
An insulator 5 constituting a part of the jig is slidably mounted, and the hanger 4 is hung on the bus bar 3 via the insulator 5 so that an arbitrary hanger is provided at an arbitrary position on the bus bar 3. 4 can be cut off.

After the anodizing treatment, the aluminum alloy profiles divided into six groups according to the specifications are treated as W
As two hangers 4, 4 each for each group
And set in the electrolytic cell 1 as shown in FIGS. 1 (a) and 1 (b).

At this time, as for the hangers 4 and 4 in which the profile members W of the first group are suspended, power can be supplied from the bus bar 3a to the hangers 4 and 4, as shown on the left side of FIG. At the first bus bar 3a. On the other hand, as shown on the right side of FIG. 1 (b), the hangers 4 and 4 hanging the second group members W are connected to the bus bar 3a via the insulator 5 mounted on the bus bar 3a. Of the power supply control jig according to the present invention.
Mounting an L-shaped conductor 6 constituting a part of the other between the bus bars 3a and one of the hanger 4, the power supply from the bus bar 3a via the conductor 6 to the hanger 4 by bypassing the insulator 5 Let it be done.

The conductor 6 has a shape as shown in FIG. 2 and is provided with a vertical member 6a having a hook-shaped hooking portion for the bus bar 3 and a hanger 4 formed in a forked shape. It is formed by joining a horizontal member 6b having an engaging portion in an L-shape, and is formed of a copper-based alloy, and the engaging portion and the engaging portion for the bus bar 3 and the hanger 4 have thumb screws 7 respectively. , 7
Is attached, so that the electrical connection with the bus bar 3 and the hanger 4 is ensured.

As with the second group, the hangers 4 and 4 hanging the profiles W belonging to the third to sixth groups are connected to the second and third bus bars 3b via the insulator 5. , 3c, and a conductor 6 is mounted between the bus bars 3b, 3c and one of the hangers 4, as shown on the right side of FIG. 1 (b), so that power can be supplied from the bus bars 3b, 3c to the hanger 4. What to do.

Next, as described above, the electrolytic coloring process is started at a voltage of 30 V and a current density of 50 A / m ² using the shaped material W as the object to be processed as the negative electrode and the counter electrodes 2 and 2 made of nickel as the positive electrodes.

When 100 seconds have elapsed from the start of power supply, the thumb screws 7, 7 of the conductor 6 attached to the hanger 4 on which the profile member W belonging to the sixth group is suspended are loosened.
As shown in FIGS. 3 (a) and 3 (b), the power supply to the section W of the sixth group is cut off by removing the conductor 6 from the hanger 4 and moving it to the left in the figure.

Further, 120 seconds and 13
0, the conductor 6 attached to the hanger 4 on which the profiles W belonging to the fifth and fourth groups are suspended.
Is removed from the hanger 4 in a similar manner, and the power supply to these sections W is cut off. Next, from the start of power supply, 16
At the time when 0 second has elapsed, the conductors 6 attached to the hangers 4 on which the third and second groups of profiles W are suspended are similarly removed from the hangers 4, and the second and third groups of profiles W are removed. Cut off the power supply to the

When 400 seconds have elapsed from the start of the power supply, the power supply from the electrolytic power supply device is stopped, and the electrolytic coloring process ends.

By the above-described electrolytic coloring, the first group of sections subjected to the electrolysis treatment for 400 seconds is black, the sections of the second and third groups electrolytically treated for 160 seconds are dark bronze, and the sections are 130 seconds. Bronze for the fourth group of sections that have been electrolytically treated
It was confirmed that the fifth group of sections electrolyzed for 20 seconds was colored in light bronze, and the sixth section of sections electrolyzed in 100 seconds was colored in stainless steel (very light bronze). .

Conversely, if the conductor 6 is detached from the hanger 4 at the start of power supply and the conductor 6 is attached to the hanger 4 as time elapses, similar results can be obtained. Needless to say,

Embodiment 2 As Embodiment 2, a power supply control jig according to the present invention is used.
The following describes an example in which an aluminum alloy is subjected to anodic oxidation treatment with different film thicknesses in the same electrolytic cell, and further to silver and color products.

The extruded members made of an aluminum alloy were subjected to pretreatment such as degreasing, etching and smut treatment according to a conventional method, and then divided into six groups based on the thickness of an anodized film and finish specifications. It is set in the electrolytic cell 1 having the same structure as (a), containing 130 g / L (13%) of sulfuric acid, and containing the electrolytic solution S maintained at a liquid temperature of 20 ° C.

At this time, as in the first embodiment, the hangers 4 and 4 in which the first group members W are suspended are attached to the first bus bar 3a as shown on the left side of FIG. 1B. As for the hangers 4 and 4 which hang directly, but hang the profiles W of the other groups, as shown on the right side of FIG. 1 (b), each busbar 3a, 3b,
3c, a conductor 6 is attached between the hanger 4 and the bus bar 3 so that power is supplied from each bus bar 3 to the hanger 4.

An anodizing treatment is started at a voltage of 17 V and a current density of 110 A / m ² , using the shaped material W as a positive electrode and the counter electrodes 2 and 2 as negative electrodes.

At the time when 30 minutes have elapsed from the start of power supply, the thumb screws 7, 7 of the conductor 6 attached to the hanger 4 on which the profiles W belonging to the fourth, fifth, and sixth groups are suspended are loosened. By removing the conductor 6 from the hanger 4, the power supply to these sections W is cut off.

When a further 30 minutes have elapsed (60 minutes from the start of the power supply), the power supply from the power supply device is stopped, and the anodizing process is terminated.

Next, the conductor 6 attached to the hanger 4 on which the profiles W belonging to the second, third and sixth groups are suspended is removed from the hangers 4, and the profiles of the fourth and fifth groups are removed. After attaching the conductor 6 again to the hanger 4 on which the W was suspended, the shaped member W was connected to the negative electrode and the counter electrodes 2 and 2.
At a voltage of 30 V and a current density of 50 A / m ² .
Minutes of electrolytic coloring.

By the above-described processing, the first group of shaped members W is subjected to anodizing treatment and coloring treatment for 60 minutes to form a colored oxide film having a thickness of 18 μm. The second and third groups of shaped members W to which only the second and third groups had been formed were formed with a silver-finished oxide film having a thickness of 18 μm and further subjected to anodizing treatment and coloring treatment for 30 minutes. A colored oxide film having a thickness of 10 μm is formed on the five groups of shaped members W, and a sixth group of shaped members W subjected to only the anodic oxidation process for 30 minutes includes:
It was confirmed that a silver-finished oxide film having a thickness of 10 μm was formed.

In the above embodiment, the hanger having the longest energization time is directly hung on the bus bar so that a hanger having insulation between the bus bar and a hanger which is not insulated is mixed in the electrolytic cell. Although an example is shown, for example, an insulator may be attached to a portion where all the hangers are hooked to the bus bar, and a conductor may be attached between the bus bar and all the hangers. It can be implemented without hindrance. In this case, for the hanger with the longest energization time, the conductor is not removed until the end.

Further, in the above embodiment, the anodic oxidation treatment and the electrolytic coloring treatment of the aluminum alloy are described. It can also be applied to a coating process.

[0038]

As described in the foregoing, the first aspect of the present invention
The power supply control jig for electrolytic processing according to the present invention is an insulator that cuts off current between the bus bar and the hanger, and a detachable conductor that electrically bypasses the insulator and electrically connects the bus bar and the hanger. Because it is made up of
It is attached to and detached very simple structure der while seeking, the conductor
Control the electrolysis time of the object to be treated in units of hangers.
For example, the anodic acid of aluminum profiles
The thickness of the film in the chemical treatment and the color tone in the electrolytic coloring treatment.
Whether different specifications can be set for each hanger
Therefore, simultaneous production of many kinds of small lots is possible.
Even if large production-type equipment is used,
Corresponding production volume can be secured, and small lots and many types
The extreme that production can be performed with high production efficiency
It has the best effect.

Further, as an embodiment of the power supply control jig for electrolytic treatment according to the present invention, in the power supply control jig according to the second aspect, since the insulator is slidably mounted on the bus bar, the object to be processed is provided. In the power supply control jig according to the third embodiment, the insulator has a structure that can be detachably attached to a bus bar or a hanger. Therefore, it is possible to easily respond to changes in the production form such as the number of types of products to be simultaneously produced, and to easily switch from original mass production to small-quantity multi-product production at any time.
In the power supply control jig according to No. 4 , since connection means are provided at both ends of the conductor, connection and energization with the bus bar and the hanger can be reliably performed, and attachment and detachment to the bus bar and the hanger can be performed easily and quickly. The effect is excellent.

[Brief description of the drawings]

FIG. 1A is a schematic sectional view showing an example of an electrolytic cell for implementing a power supply control jig according to the present invention. (B)
It is the schematic which shows the hung state of the hanger to the bus bar of the electrolytic cell shown to Fig.1 (a).

FIG. 2 is an enlarged perspective view showing in detail a structure of a conductor in a power supply control jig according to the present invention .

FIGS. 3A and 3B are power supply controls according to the present invention.
It is explanatory drawing which shows the structure of a jig , the electric power supply state with respect to a to-be-processed object by an electric power supply control jig, and the electric power supply interruption state, respectively.

[Explanation of symbols]

 3 (3a, 3b, 3c) bus bar 4 hanger 5 insulator (power supply control jig) 6 conductor (power supply control jig) W-shaped material (workpiece)

(56) References JP-A-63-145798 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) C25D 21/00

Claims (4)

(57) [Claims] 1. A bus bar connected to a power supply and an object to be processed.
A jig interposed between the hanger and a hanger, and an insulator that cuts off current between the bus bar and the hanger, and electrically connects the bus bar and the hanger by bypassing the insulator. A power supply control jig for electrolytic treatment, comprising a detachable conductor. 2. The power supply control jig for electrolytic treatment according to claim 1 , wherein the insulator is slidably mounted on the bus bar. 3. A process according to claim 1 or claim 2 electrolysis power supply control jig, wherein the insulator is removable. At both ends of 4. A conductor electrolyte according to any one of claims 1 to 3, characterized in that it comprises a connecting means for securing the electrical contact between the bus bar and the hanger Power supply control jig for processing.