JP4413993B2 - Surface treatment equipment, especially by electrolysis for metal parts - Google Patents

Description

  The present invention relates to improvements in the process of treating the surface of metal parts by electrolysis, and more particularly to a continuous electrolysis bat that employs the principle of immersing the parts as well as moving the parts.

  Surface treatment of parts by electrolysis is a well-known treatment that requires the use of electrical current to carry out the treatment.

  Electrolysis includes anodizing of aluminum, anodic transfer for electrodeposition of paint on aluminum, steel treatment such as galvanizing, chromium plating, copper plating and nickel plating, electrophoresis, phosphate treatment, and tin plating. Although it is applied to metals such as copper treatment, it may also be used for electrodeposition treatment of non-metallic parts such as electroplating of plastic parts.

In a conventional electrolysis process, parts are processed either:
-Mounted on a support arranged to remain stationary in the electrolysis bat. In this case, an electric contact such as V-shaped copper disposed at the end of the bat makes it possible to transmit current to the support disposed in the V-shaped portion and further to the component. In this process, in order to maintain the static state of the electrical contacts, the support and the accompanying components must remain stationary. Therefore, in this process, the generation of bubbles cannot be prevented, and as a result, the process is not performed in the cavities of some parts, resulting in insufficient process uniformity. ;
-It is detachably placed in the electrolytic cell. In this case, the parts to be processed together are brought into contact with movable electrodes arranged in the tank. The disadvantage of this process is that the parts that rotate together are damaged by rubbing against each other.
European Patent Application No. 1433537

  Accordingly, it is an object of the present invention to mitigate all or some of the disadvantages of the existing processing and work equipment described above.

  For this purpose, the present invention is directed to an installation for performing a surface treatment on a part, for example a hollow part or other part, in which the part is at least one treatment containing a liquid. It is completely immersed in the bat. The present invention is characterized by the following. Each hollow part is immersed by being rotated, whereby bubbles that are likely to be generated inside the bat are released from the inner walls of these parts.

  In this case, the treatment facility for treating the surface of a metal part according to the invention has an electrolysis bat for containing a treatment liquid for immersing the part to be treated. This processing facility is characterized by the following. The parts to be processed are secured to a drum that can be pivoted to cause each part in the bat to perform at least one rotational movement, and the bat has at least two electrodes; On the other hand, a current having a polarity opposite to the polarity of the electrode is supplied to the drum by at least one contact pad brought into contact with a drive ring for driving the drum.

  According to a supplementary feature, the bat has a set of contact pads, such as 15 separate contact pads, for example, which sandwich a drive ring for driving the drum.

  According to another feature, the contact pad is mounted for translational movement towards the flange of the ring and is further pressed against the corresponding surface of the corresponding side wall by an elastic system such as a spring.

  According to another feature of the invention, two laterally connected pads are arranged in the form of an arc centered on the pivot center of the drum, while each contact pad is a cable or copper connected to a power source. Touching the braid.

  Also, the outer periphery of the drum has a series of slides for slidably receiving the cassette used to support the part being processed, and the slide is fixed to the slide Flexible contact blades, thereby transmitting the electrical contact of the sliding slope to the corresponding cassette (4) and further to the parts fixed to the cassette, so that the electrical Note that it is possible to perform decomposition.

  In addition, the bat has a motor that rotates the pivoting drum by cooperating with a gear comprising a series of pegs, which are parallel to each other between two flanges on one side wall of the drum. It is attached to become.

  According to another supplementary feature, the bat has two electrodes connected to either the negative or positive electrode, while the drum is given the opposite polarity. Said electrode is comprised from an aluminum plate.

  Other features and advantages of the present invention will become apparent from the following description, taken in conjunction with the accompanying drawings, given by way of non-limiting example only.

  According to the process using the processing equipment of the present invention, each part is immersed in at least one bat in a rotational motion so as to release bubbles that are likely to be generated inside the bat from the inner walls of these parts. .

  According to the embodiment shown, each part is rotationally moved over at least 90 °, preferably over 360 °.

  According to the embodiment shown, a certain number of said parts are pre-arranged on a support or cassette (4) having at least one holding member for holding each part together.

  According to this embodiment, the drum corresponding to the whole reference number (100) is installed so that the equipment for processing the parts rotates around the horizontal axis (X, X ′) inside the bat. It consists of a bat (1) with (2) and the part to be processed is fixed to the drum.

  According to the embodiment shown, the drum (2) has on its outer periphery a series of glide surfaces (3) having an axis parallel to the axis of rotation of the drum, these glide surfaces being treated. It is intended for example to slidably receive a cassette (4) which serves to support the parts to be produced.

  The cassette is a cassette described in, for example, Patent Document 1, and has a set of supports for parts, so that a plurality of parts can be fixed on a single cassette. Become.

  The bat (1) of the present invention has a motor that rotates a pivoting drum (2) by cooperating with a gear (6) comprising a series of pegs (7), and these pegs are one of the drums. A drive ring is configured by being mounted so as to be parallel to each other between the two flanges (10a, 10b) on the side wall (10).

  The bat (1) has, for example, two electrodes (8a, 8b) connected to the negative electrode to electrolyze an aluminum part, for example. Note that these electrodes (8a, 8b) are connected to the positive electrode when electrolyzing steel or copper parts.

  The drum (2) is advantageously made of titanium, but may be made of another material, such as plastic, for processes that require metal coating, such as galvanizing.

  In the case of anodizing, the drum (2) is given the opposite polarity, ie the positive electrode.

  Current is supplied to the drum (2) via at least one contact pad (9) in contact with a drive ring (10) for driving the drum.

  According to one aspect of the present invention, the bat is a set of 15 contact pads (9a, 9b, 9c,... 9o), for example, as shown in more detail in FIG. It has a contact pad (9).

  According to the illustrated embodiment, electrical contact with the drum is achieved by sandwiching the drive ring (10) between two series of 15 pads.

  The contact pad (9) is made of, for example, graphite, but may be made of other materials in other processes.

  In addition, each pad (9) is mounted for translational movement towards the ring flanges (10a, 10b) and further towards the corresponding surface of the corresponding side wall by an elastic system such as a spring. Pressed.

  Of course, the two sets of laterally connected pads are arranged in the form of an arc centered on the pivot center of the drum, as is particularly evident in FIGS.

  In this case, the graphite pad rubs against the movable side wall, so that an electric current is transmitted to the entire drum structure, in particular to the sliding ramp (3) holding the cassette (4).

  Each contact pad (9) is connected to a cable or copper braid (12) connected to a power source (13).

  The graphite contacts rub against the flanges (10a, 10b) of the drive ring for driving the drum, and the current is actually transmitted to the entire gear structure, including the slippery surface (3) which serves to support the cassette. Is done.

  Advantageously, the sliding slope (3) comprises a flexible contact blade fixed to the sliding slope, whereby the electrical contact of the sliding slope is transmitted to the corresponding cassette (4) and further to the cassette. As a result, it is possible to perform electrolysis between the components connected to the positive electrode and the electrodes (8a, 8b) in this application example.

  It should be pointed out that, according to a preferred embodiment, the electrodes (8a, 8b) are advantageously composed of an aluminum plate connected to the negative electrode.

  In addition, the aluminum plate constituting the electrode is positioned on either side of the drum close to the wall of the bat, for example, and is arranged to be parallel to the rotation axis of the drum.

  Thus, in the case of anodizing aluminum, an aluminum component fixed on the cassette is anodized by a vat (1) having an electrolyte such as sulfuric acid and filled with the electrolyte. It becomes possible to do. Using this system, electrolysis is performed on parts fixed on a cassette that rotates laterally on gears, resulting in a series of parts moving in a processing bat. Electrolysis can be performed.

  Of course, the present invention is not limited to the embodiments described and illustrated by way of example, but rather encompasses all technical equivalents and combinations thereof.

It is an end view which shows the bat of this invention. It is a top view. It is a side view. It is the same figure as FIG. 1 which abbreviate | omitted the drum.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bat 2 Drum 3 Sliding slope 4 Support body or cassette 6 Gear 7 Peg 8a, 8b Electrode 9, 9a, 9b, 9c,. . . 9o Contact pad 10 Drive ring or side wall 10a, 10b Flange 12 Cable or copper braid 13 Power supply 100 Processing equipment

Claims (11)

A treatment facility (100) for treating the surface of a metal part,
In a treatment facility comprising an electrolysis bat (1) containing a treatment liquid (20) for immersing the part to be treated,
The electrolysis bat (1) includes a motor (5) and a drum (2),
The drum (2) is rotatably attached to the electrolysis bat (1),
The drum (2) is rotationally driven by the motor (5) via a drive ring (10) of the drum (2),
To the drum (2) to perform at least one of rotational movement to the parts to be each of said processing in said electrolysis vat (1) in the part to be the process in the drum (2) Fixed,
The electrolysis bat (1) has at least two electrodes (8a, 8b);
Wherein the pair of contact pads in contact with the driving ring (10) (9) of the drum (2), and characterized in that a current of opposite polarity is supplied to the polarity of the electrodes on the drum Processing equipment (100).   The processing equipment (100) according to claim 1, wherein the bat comprises a set of 2x15 contact pads (9a, 9b, 9c, ... 9o) contact pads (9). .   The processing equipment (100) according to claim 2, wherein electrical contact with the drum is realized by sandwiching the drive ring (10) between two series of 15 pads. The contact pad (9) is made of graphite,
Mounted to translate and move toward the flanges (10a, 10b) of the ring;
4. Processing facility (100) according to claim 3, characterized in that it is pressed against the corresponding surface of the corresponding side wall by an elastic system such as a spring.   The processing facility (100) according to claim 4, wherein the two laterally connected pads are arranged in the form of an arc centered on the pivot center of the drum.   The treatment facility (100) according to claim 5, wherein each contact pad (9) is connected to a cable or copper braid (12) connected to a power supply (13).   The outer periphery of the drum has a series of sliding surfaces (3) for slidably receiving a cassette (4) used to support the parts to be processed. Item 7. The processing facility (100) according to any one of Items 1 to 6.   The sliding slope (3) comprises a flexible contact blade (14) fixed to the sliding slope, thereby transmitting electrical contact of the sliding slope to the corresponding cassette (4); 8. The processing facility (100) according to claim 7, characterized in that it can be transmitted to the parts fixed to the cassette and consequently electrolyzed. The bat (1) has a motor that rotates the pivot drum (2) by cooperating with a gear (6) having a series of pegs (7);
9. The peg according to any one of the preceding claims, characterized in that the pegs are mounted parallel to each other between two flanges (10a, 10b) on one side wall (10) of the drum. (100).   The bat (1) has the two electrodes (8a, 8b) connected to either the negative electrode or the positive electrode, while the drum (2) is given the opposite polarity. The processing facility (100) according to any one of claims 9 to 9.   The processing equipment (100) according to claim 10, wherein the electrodes (8a, 8b) are made of an aluminum plate.

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