JPS5844158B2 - Renzokuyoukiyokusankashiyorisouchi - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for continuously carrying out anodic oxidation treatment by passing a workpiece of aluminum or its alloy through an anodization treatment tank consisting of an alternating combination of anode chambers and cathode chambers. It is something.

Conventionally, in a batch-type surface treatment method, a treatment liquid tank is arranged, and a transport rod carrying the object to be treated is sequentially transferred to the nuclide tank from the start end to the end, and a predetermined surface treatment is performed for each type. However, the working time required to hang and unrack the objects to be processed, that is, so-called racking and unracking time, and the labor involved are enormous and inefficient.

In particular, compared to the anodizing treatment conditions, the racking jig is
There are many restrictions both electrically and mechanically, making it expensive.
The wear and tear of the jig is also a big loss from an economic point of view (the development of a jig-less method has been desired).

On the other hand, in order to improve the disadvantages of the batch method, such as increased racking time, increased labor, and loss of racking jigs, a continuous method has been proposed in which the object to be anodized is continuously anodized.

However, in the conventional continuous anodizing method, the workpiece is continuous across each treatment tank, from the unwinding side of the workpiece to the winding side, and the workpiece must be a current-carrying body. However, it is suitable for processing products in the form of strips, coils, and wires, but it is suitable for processing products that are relatively short (10 meters or less) or bent, such as extruded materials, folded plates, pipes, and square materials. For products that cannot be anodized and must be anodized in their original shape, continuous processing is not possible due to the method of transporting the objects to be processed and the method of power supply.

An object of the present invention is to provide an apparatus that enables continuous anodizing treatment without the need for racking work or racking jigs, regardless of the shape of the object to be treated, such as strips or extruded materials. It is something.

In other words, the anode chamber and the cathode chamber are arranged alternately so that extruded mold material, etc., which cannot be treated as a single current-carrying body while flowing continuously in the anodizing treatment tank, can be coated continuously and uniformly. It is what it is.

Embodiments of the present invention will be described below with reference to the drawings.

1 to 3 show a first embodiment of the present invention, in which 1 is a workpiece made of aluminum or its alloy, 2 is a conveying device consisting of a variable-speed roller conveyor, and 3 is an arrow indicating the direction of movement of the object to be treated 1, and 4 is an anodizing tank whose wall has electrical insulation properties.

The processing tank 4 is divided into an anode chamber I, a cathode chamber 8, and an anode chamber 9 by electrically insulating partition walls 5 and 6 provided perpendicularly to the transfer direction 3 of the object to be processed 1. .

Further, the anode chamber 7 has a power supply material 10 made of lead as an anode, and the cathode chamber 8 has a power supply material 11 made of carbon as a cathode. Power supply materials 12 made of lead as anodes are installed in the anode chamber 9, and electricity is applied to each power supply material by a power supply device 13.

Further, a portion corresponding to the inlet of the processing tank 40 has a penetration portion 14 through which the material to be treated 1 can pass, and a portion corresponding to the outlet also has a penetration portion 15 through which the material to be treated 1 can pass, and , each of the partition walls 5 and 6 also has similar penetrations.

That is, since the processing liquid flows out of the processing tank 4 from the penetration parts 14 and 15, overflow tanks 16 and 17 are provided.
The processing liquids in both tanks 16 and 17 are sucked by a circulation pump 18 and returned to the anode chamber 7, the cathode chamber 8, and the anode chamber 9 via a return pipe 19, respectively.

Further, the width of each of the chambers 7, 8°90 in the direction of the arrow 3 is greater than the width of the object 1 to be treated in the direction of the arrow 3, and the length of the object 1 in the direction of the arrow 3 is the same as that of the cathode in the direction of the arrow 3. It is longer than the length of chamber 8.

Note that the object 1 to be treated is relatively short, such as 10 meters or less in length, and is unbendable, so that it must be anodized in its original shape.

In order to carry out the treatment using the continuous anodizing treatment tank configured in this way, the object to be treated 1 is placed on the transport device 2, and the object to be treated is placed in the direction indicated by the arrow 3.
move in the direction of

Then, the processed material 1 enters the anode chamber 7 through the penetration portion 14, passes through the cathode chamber 8 and the anode chamber 9 in order, and exits from the tank through the penetration portion 15.

That is, first, the object to be treated 1 is positively charged by contacting the treatment liquid in the anode chamber 7, and then the object to be treated 1 moves between the anode chamber 7 and the cathode chamber 8. Material 10 → Processing liquid in anode chamber 7 → Workpiece 1 →
Electricity is applied in the order of the treatment liquid in the cathode chamber 8 and the power supply material 11, and the surface of the object to be treated 1 is anodized.

Next, if the front end of the object to be processed 1 reaches the anode chamber 9, the rear end is in the anode chamber 7, and the center is in the cathode chamber 8, in addition to the above-mentioned energization, the power supply material 12 → the anode chamber 9. Electrification is also applied in the order of the treatment liquid → the object to be treated 1 → the treatment liquid in the cathode chamber 8 → the power supply material 11, and the anodic oxidation process is performed in the same manner.

Finally, when the object to be treated 1 is transferred to the cathode chamber 8 and the anode chamber 9, electricity is supplied from the anode chamber 9 through the object to be treated 1 to the cathode chamber 8, and the anodization treatment is similarly performed here. Ru.

That is, since the length of the object to be processed 1 is longer than the length of the cathode chamber 8, and the anode chamber 7 is provided at the front of the cathode chamber 8, and the anode chamber 9 is provided at the rear thereof, the object to be processed 1 is moved. , the object to be treated 1
The entire length of the workpiece 1 does not fit in the cathode chamber 8, and either the front or rear part of the object 1, or both, is always in the anode chamber 7.
or 9, surface treatment can be performed over the entire length of the object to be treated, and therefore there is no unsurfaced portion in the length direction of the object to be treated 1.

The processing liquid overflowing from the penetration parts 14 and 15 is stored in the overflow tank 1.
6 and 11, and returned to the respective chambers γ, 8, and 9 of the anodizing treatment tank 4 by the treatment liquid circulation pump 18.

FIG. 4 shows a second embodiment of the present invention, which is not much different from the first embodiment described above, but in this second embodiment, a cathode chamber 8' and an anode chamber 8' are added. And the upper power supply materials 10, 11. In addition to 'f2......, the corresponding power supply materials 10' (plus side), 11' (minus side), 121 (plus side),...
is provided.

Therefore, compared to the first embodiment, the anodic oxide film is more uniform, and both sides of the object to be treated can be treated at the same time.

FIG. 5 shows a third embodiment of the present invention, in which the overflow tanks 16 and 11 and the conveying device 2 are in the same position as in the first embodiment, and the vertical relationship of the anodizing tank 4 is changed. It is equivalent to having the upper half removed.

That is, in this third embodiment, the lower surface of the object 1 to be treated is mainly subjected to surface treatment.

Therefore, in the present invention, the anodizing treatment tank is arranged such that the anode chamber and the cathode chamber are arranged alternately in the direction of movement of the object to be treated, which is relatively short and unbendable and made of aluminum or its alloy. and a cathode chamber, and has a structure consisting of at least two anode chambers and one cathode chamber, and the object to be treated passes through these anode chambers and cathode chambers in succession to carry out anodizing treatment. Because of this, there is no need for racking for the object to be processed, and the length of the object to be processed is longer than the length of the cathode chamber. As mentioned in the previous example, the entire length of the object is not inside the cathode chamber, and the front part of the object is always moved. Because one or both of the rear parts straddle the anode chamber, it is possible to anodize the entire length of the object to be treated, and a uniform anodic oxide film can be obtained on the surface. In addition, indirect power supply is possible. The benefits of this technology include not being subject to current limitations and allowing equipment to be made smaller.

In addition, if the equipment is equipped with an overflow tank to collect the treatment liquid after anodizing treatment, a return pipe and a circulation pump to return the treatment liquid from the overflow tank to the anodization treatment tank, all the treatment liquid must be circulated. There is no waste of processing liquid.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional side view of the first embodiment of the present invention, and Fig. 2 is along the cutting line ■-■ in Fig. 1? i5 cross-sectional plan view, Figure 3 is the 1st
FIG. 4 is a longitudinal sectional side view of the second embodiment of the present invention, and FIG. 5 is a longitudinal sectional side view of the third embodiment of the present invention. 1... Workpiece, 2... Conveyance device, 3
...Arrow in the direction of transition, 4...Anodizing treatment tank, 5,6...Partition wall, 1...Anode chamber, 8,8'. ...Cathode chamber, 9゜91...
...Anode chamber, 10, 10', 11, 11', 12゜12
1...Power supply material, 13...Power supply device, 1
4, 15... Penetration part, 16, 17...
Overflow tank, 18... Processing circulation pump, 19...
...Processing liquid return pipe.

Claims (1)

[Claims] 1 Divided into an anode chamber and a cathode chamber so that the anode chamber and cathode chamber are arranged alternately in the direction of movement of the workpiece made of aluminum or its alloy, which is relatively short and unbendable. anodizing treatment tank, and the arrangement thereof consists of at least two anode chambers and one cathode chamber, and furthermore, the anode chamber and the cathode chamber can be continuously anodized, A transport device and a power supply device are provided for transporting the object to be processed in the direction of movement of the object to be processed, and further, the width of the anode chamber and the cathode chamber in the direction of movement is larger than the width of the object to be processed in the direction of movement. Also, a continuous anodizing treatment apparatus, characterized in that the length of the object to be treated in the transition direction is longer than the length of the cathode chamber in the transition direction.