JP2006009060A - Power-feeding cradle in plating apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power-feeding cradle in a plating apparatus, which has an adequate current-carrying capacity, does not cause energization failure and is not worn. <P>SOLUTION: This power-feeding cradle 1 in the plating apparatus is a device for supplying an electric power to a hanger by contacting with a power-receiving part of the hanger when the hanger moves down, and has tabular or bar-type electrification bodies 4 and 4 made from platinum, projecting from a power-feeding plate 2 which is a face for contacting with the power-receiving part of the hanger. The power-feeding cradle is preferably provided with a plurality of the projecting electrification bodies 4 and 4 made from platinum, and can be provided with springs 6 and 6 for actuating the power feeding plate 2 upward. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a power receiving base in a plating apparatus for supplying power to a hanger that holds a workpiece in the plating apparatus.

  In the plating apparatus, a hanger holding a workpiece is transferred, and the workpiece is sequentially immersed in a processing solution to perform the plating process. Among these treatment processes, it is necessary to feed power to the work held on the hanger in the plating treatment process, and when the hanger is lowered, the power receiving base installed on the flange upper surface of the treatment tank is brought into contact with its own weight by its own weight, Power is supplied. By the way, depending on the shape of the workpiece, it is necessary to arrange an auxiliary anode from the viewpoint of plating quality, and the auxiliary anode is held by a hanger to ensure an appropriate positional relationship with the workpiece. In such a case, it is necessary to supply power to the auxiliary anode, and a power receiving portion for the auxiliary anode is provided on the hanger, and a power supply receiving base for auxiliary anode for supplying power in contact with the hanger is provided to supply power.

  Conventionally, the auxiliary anode power receiving cradle is provided on the side of the work power receiving cradle, and the auxiliary anode power receiving portion that is extended from the hanger is in contact therewith. However, it is difficult to always properly maintain the positional relationship between the power receiving cradle for work and the power receiving cradle for auxiliary anode and the power receiving part for work and the power receiving part for auxiliary anode, and stable contact cannot be secured. There was a problem. In addition, since the power supply cradle is installed on the upper surface of the flange of the processing tank, it is unavoidable that the plating solution that drops and scatters from the workpiece is attached, and both the power feed cradle and the power reception unit are made of a copper plate. As a result, a copper oxide film, which is a non-conductor, is formed on the contact surface, making it difficult for current to flow, raising the necessary power supply voltage and eventually leading to poor conduction.

As a power supply pedestal that is held or provided on such a hanger and supplies power to something other than a workpiece, one as shown in Patent Document 1 is known. In this patent document 1, when the hanger descends, the upper surface of the power feeding portion for feeding power to the hanger in contact with the power feeding pin provided on the hanger is an inclined surface. Power is supplied to the motor. In the one disclosed in Patent Document 1, since the upper surface of the power feeding portion is an inclined surface, the dropped plating solution quickly flows out to the outside, does not accumulate inside the power receiving cradle, and does not adhere as a residue. There is an advantage, and at the moment when the tip of the feeding pin of the hanger that comes down comes into contact with the surface of the power supply unit, it receives a reaction force from the inclined surface and slightly slides along the inclined surface to rub the surface of the power supply unit. Therefore, it is said that the surface of the power feeding portion to which the tip of the power feeding pin hits is always kept in a beautiful state, and even if some residue is attached, there is an advantage that no power feeding failure is caused. However, there is a limit to the current that can be energized in the power supply by the power supply pin, and there is a problem that the power supply pin wears because the power supply portion rubs.
JP-A-10-310899

  The present invention has been made to solve the above-mentioned problems and to provide a power receiving base in a plating apparatus that has a sufficient current capacity, does not become poorly energized, and does not wear out.

  The present invention made in order to solve the above problems is a power receiving stand in a plating apparatus that contacts a power receiving portion of a hanger when the hanger is lowered and supplies power to the hanger, and is a surface that contacts the power receiving portion of the hanger. A plate-shaped or rod-shaped platinum current-carrying member is provided in a protruding manner. It is preferable that a plurality of the platinum electrification bodies protrude.

  In the power receiving base in the plating apparatus of the present invention, a plate-shaped or rod-shaped platinum current conductor projects from the surface of the hanger that contacts the power receiving section. It will be. An oxide film is not formed on the surface of the platinum current-carrying member, and there is an effect that a current-carrying failure does not occur. In addition, the pressing force between the power receiving unit of the hanger and the power receiving pedestal acts on the platinum conductive body in a concentrated manner, and a large contact pressure can be obtained. Since it is not rubbed with the cradle, there is an advantage that it is not worn.

Next, the best mode for carrying out the present invention will be specifically described with reference to the drawings.
FIG. 1 is a front view of a power supply cradle 1 in the plating apparatus of the present invention, and FIG. 2 is a side view thereof, which is composed of a power supply plate 2 and a cradle substrate 3. On the upper surface of the power supply plate 2, platinum electric conductors 4, 4 are projected, and on the lower surface, support rods 5, 5 are suspended. The support rods 5 and 5 are inserted into the through holes of the cradle substrate 3 and supported so as to be movable up and down, and springs 6 and 6 are attached between the power feed plate 2 and the cradle substrate 3 so that the power feed plate 2 is moved upward. In addition to energizing, stoppers 7 and 7 are attached to the lower ends of the support rods 5 and 5 to restrict the ascent end position of the power supply plate 2.

  FIG. 3 is a plan view showing details of the power feeding plate 2, and FIG. 4 is a cross-sectional view taken along the line AA in FIG. Platinum current-carrying bodies 4 and 4 are press-fitted inside 8 and 8. In the illustrated example, the concave groove 8 has a width of 1 mm and a depth of 1.0 to 1.5 mm, and a 1 mm × 2 mm platinum conductive body 4 is press-fitted into the groove 8 so as to protrude 0.5 to 1.0 mm. The number and length of the recessed grooves 8 and 8 and the platinum current-carrying bodies 4 and 4 can be appropriately determined by the energization current. In the figure, 9 and 9 are mounting holes for the support rods 5 and 5, 10 and 10 are electric wire connection holes, and the electric wire connection holes 10 and 10 are flexible wires connected to the anode side of a power supply device for plating (not shown). Wires are connected.

  5 and 6 show a state in which the power supply cradle 1 configured as described above is attached to the plating tank 11, and in this case, the power cradle 1 is used as a power cradle for the auxiliary anode. A workpiece power receiving base 14 is electrically insulated and attached to the flange 12 of the plating tank 11 via a mounting base 13, and the power receiving base 14 of the power receiving base 1 is attached to the work power receiving base 14. The mounting bracket 15 is electrically insulated and attached. The hanger 16 is transported by a transport means (not shown) so that the work power receiving portion 17 of the hanger 16 is lowered onto the work power receiving base 14, and a guide (not shown) for guiding the hanger 16 is provided on the flange 12. The work power receiving unit 17 is provided so as to be guided to a fixed position on the work power receiving base 14.

  The hanger 16 is provided with an auxiliary anode power receiving unit 18 projecting laterally. When the hanger 16 is lowered and the work power receiving unit 17 contacts the work power receiving base 14, the auxiliary anode power receiving unit 18 supplies power. The power supply plate 2 is brought into contact with the power supply plate 2 of the cradle 1 from above, and the power supply plate 2 is pushed down against the elastic force of the springs 6 and 6. The hanger 16 is provided with a hook 19 that is locked to the conveying means like the conventional hanger, and an auxiliary anode bar 20 for supplying power to the auxiliary anode. The auxiliary anode bar 20 is electrically insulated and fixed from the hanger 16 and connected to the auxiliary anode power receiving unit 18.

  The power feeding plate 2 of the power feeding cradle 1 configured as described above is pressed against the auxiliary anode power receiving portion 18 by the elastic force of the springs 6 and 6 when the hanger 16 is lowered as shown in FIG. However, since the platinum current-carrying members 4, 4 project from the upper surface of the power supply plate 2 that contacts the power receiving portion 18 for the auxiliary anode, the contact with the power receiving portion 18 for the auxiliary anode is in contact with the platinum current-carrying members 4, 4. Will be done. An oxide film is not formed on the surface of the platinum current-carrying bodies 4 and 4, so that there is no failure in conduction. Since the pressing force of the power feeding plate 2 against the auxiliary anode power receiving section 18 acts on the platinum current-carrying bodies 4 and 4 in a concentrated manner, a large contact pressure can be obtained, and reliable energization is performed. Further, the auxiliary anode power receiving unit 18 and the power feeding plate 2 are simply pressed and are not rubbed, so that they are not worn.

  In the above description, the power supply cradle is used for the auxiliary anode. However, when the plating current is not so large, it can be used for power supply to the workpiece. When the total weight of the hanger including the workpiece is large, it is preferable to provide a hanger receiver for receiving the weight of the hanger and to provide a spring for pressing the power supply plate against the power receiving portion of the hanger as described above. When the total weight of the hanger is small, the weight of the hanger may be directly received by the power receiving stand.

It is a front view of the electric power receiving stand in the plating apparatus of this invention. It is a side view of the electric power receiving stand in the plating apparatus of this invention. It is a top view of a feed plate. It is sectional drawing in the AA part of FIG. It is a front view which shows the state attached to the plating tank. It is a side view which shows the state attached to the plating tank. It is a front view which shows the state by which the electric power feeding plate was pressed by the power receiving part for auxiliary anodes.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Power supply stand 2 Power supply plate 3 Substrate board 4 Platinum electric current body 5 Supporting rod 6 Spring 7 Stopper 8 Concave groove 9 Mounting hole 10 Electric wire connection hole 11 Plating tank 12 Flange 13 Mounting base 14 Work feeding base 15 Mounting bracket 16 Hanger 17 Power receiving part for work 18 Power receiving part for auxiliary anode 19 Hook 20 Auxiliary anode bar

Claims (2)

  When the hanger is lowered, it is in contact with the power receiving part of the hanger and is a power receiving stand in the plating apparatus for supplying power to the hanger, and a plate-shaped or rod-shaped platinum current-carrying member is provided on the surface that contacts the power receiving part of the hanger. A feed cradle in a plating apparatus characterized by the above. The power supply cradle in the plating apparatus according to claim 1, wherein a plurality of platinum electric conductors are protruded.

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