JP3075438U - Feed roller in continuous plating equipment - Google Patents

Abstract

(57) [Summary] (with correction) [PROBLEMS] To provide a beautiful plating surface in a continuous plating apparatus by extending the life of a power supply roller and easily removing adhered electrolyte. SOLUTION: A power supply roller 6 for supplying power while contacting and rotating with an object to be plated continuously transferred in a plating tank is coated with a chemical resistant coating. The chemical resistant coating is a titanium (or nickel) coating 10 or a synthetic resin coating 11.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to an improvement in a power supply roller for supplying power to an object to be plated continuously.

[0002]

[Prior art]

 Conventionally, it has been proposed to continuously and efficiently plate a plate-shaped object to be plated. FIG. 5 shows an example of such a case, in which a plating solution 2 is contained in a plating tank 1, a plating object 3 is immersed in the plating solution 2, and a roller 5 is rotated on a rail 4 from the front side to the back side of the drawing. Sent continuously. A part of the roller 5 is a power supply roller, and energizes the object to be plated 3 to form a cathode, and energizes between the cathode and the anode 9 disposed in the plating tank 1 to form an object to be plated as a cathode. A plating layer is formed on the surface of No. 3. The work 3 on which the plating layer is formed is continuously sent out of the bath from an outlet (not shown) formed in the plating bath 1 in a liquid-sealed state.

FIG. 4 shows an example of a power supply roller 6. The roller is divided into four parts a, b, c, and d by an insulator 7, and each divided part comes into contact with an object to be plated. Then, power is supplied to the divided portion (for example, a) from the power supply portion (not shown) above the plating tank through the rotation shaft 8 to make the object to be plated a cathode. As the power supply roller 6 rotates, each of the power supply divided portions a, b, c, and d sequentially comes into contact with the object to be plated, and energizes. Although not shown in detail in the rotating shaft 8, the rotating shaft 8 has a current-carrying portion divided corresponding to the divided portion. Although an example in which the number of divided parts is four is shown, any number of two or three may be used.

[0004]

[Problems to be solved by the invention]

 In the continuous plating method using a power supply roller as described above, the electrolyte (extra plating) adheres to the vicinity of the power supply section that contacts the object to be plated, and this gradually accumulates and damages the plating surface of the object to be plated. Becomes In order to prevent this problem, when the power supply divided portion of the power supply roller is turned to the opposite side, a positive electrode is loaded on the power supply divided portion, and elution and removal of electrolytic products attached to the surface are performed. On the other hand, since the power supply section is exposed to the plating solution, there is also a risk of wear due to chemicals. In the present invention, the prevention of the wear of the power supply section and the removal and removal of the adhered electrolyte are further ensured. It also prevents plating, keeps the plating surface smooth, and extends the life of the power supply roller.

[0005]

[Means for Solving the Problems]

 The present invention has the following configuration. (1) A power supply roller in a continuous plating apparatus, wherein a power supply roller for supplying power while contacting and rotating an object to be plated continuously transferred in a plating tank is provided with a chemical resistant coating. .

(2) The power supply roller in the continuous plating device according to (1), wherein the chemical resistant coating is a titanium or nickel film.

(3) The power supply roller in the continuous plating apparatus according to the above (1) or (2), wherein iridium oxide or platinum is further added to a contact surface of the power supply roller with the object to be plated.

(4) The power supply roller in the continuous plating apparatus according to the above (1), wherein the non-contact surface of the power supply roller with the object to be plated is coated with a nonconductor chemical resistant coating.

(5) The power supply roller in the continuous plating apparatus according to the above (4), wherein the non-conductor chemical-resistant coating is any one of a fluorine resin, a vinyl chloride resin, a nylon and an epoxy resin.

That is, by applying a chemical resistant coating on the surface of the power supply roller, the power supply portion is prevented from being worn, the adhesion of the electrolysis product is reduced, and even if it is adhered, the elution is easily removed. be able to.

As the chemical-resistant coating, a titanium or nickel coating is suitable. Titanium or nickel coating not only does not impair the electrical conductivity of the power supply roller, but also improves the chemical resistance and also exfoliates the adhered electrolyte. In this case, it is preferable to add iridium oxide or platinum to the titanium or nickel film in order to improve the electrical conductivity. Here, addition refers to coating, pasting, vapor deposition, and the like. In addition, since the non-contact surface of the power supply roller that does not contact the object to be plated does not need to be conductive, applying a nonconductive chemical-resistant coating prevents adhesion of the electrolyte and prevents wear of the power supply roller. For the non-conductor chemical-resistant coating, fluorine resin, vinyl chloride resin, nylon, and epoxy resin are preferably used. Fluororesins and epoxy resins are particularly good.

[0012]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. Of course, the present invention is not limited to these. FIG. 1 is a cross-sectional view of one power supply roller 6, in which the power supply roller 6 is fixed to the rotating shaft 8, and has power supply divided portions a and c divided by an insulator (not shown).

A titanium film 10 is provided on the circumferential surface of the power supply divided portion, and a fluororesin layer is provided on the upper and lower surfaces as a nonconductive chemical resistant coating 11.

FIG. 2 shows another example in which the entire surface of each divided portion made of copper is covered with a titanium film 10. That is, in this example, the titanium film is also formed on the surface in contact with the rotating shaft 8. FIG. 3 shows an example in which the iridium oxide layer 12 is provided on the surface of the titanium film 10 on the peripheral surface in FIG. In the above example, titanium and iridium oxide are described, but nickel and platinum may be used, respectively.

[0015]

[Effects of the Invention] According to the present invention, a titanium or nickel film or a nonconductive chemical-resistant coating prevents the power supply roller from being worn out, prolongs the service life, and reduces electrolytic products adhering to the surface near the cathode. Since it can be easily peeled off, a beautiful plated surface can be obtained. Further, in the case of a titanium or nickel film, the conductivity may be slightly reduced. Therefore, the conductivity is improved by using iridium oxide or platinum.

[Brief description of the drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a cross-sectional view of another embodiment of the present invention.

FIG. 3 is a sectional view of still another embodiment of the present invention.

FIG. 4 is an explanatory diagram of a power supply roller.

FIG. 5 is a sectional view of an example of a plating apparatus to which the present invention is applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Plating tank 2 Plating solution 3 Plated object 4 Rail 5 Roller 6 Power supply roller 7 Insulator 8 Rotating shaft 9 Anode 10 Titanium film 11 Non-conductor chemical resistant coating

Claims (5)

[Utility model registration claims] 1. A power supply roller for supplying power while contacting and rotating an object to be plated continuously transferred in a plating tank,
A power supply roller in a continuous plating apparatus, wherein the power supply roller is provided with a chemical resistant coating. 2. A power supply roller in a continuous plating apparatus according to claim 1, wherein the chemical resistant coating is a titanium or nickel film. 3. A power supply roller in a continuous plating apparatus according to claim 1, wherein iridium oxide or platinum is further added to a contact surface of the power supply roller with the object to be plated. 4. The power supply roller in the continuous plating apparatus according to claim 1, wherein the non-contact surface of the power supply roller with the object to be plated and the exposed surface of the rotating shaft are coated with a non-conductor chemical resistant coating. 5. The power supply roller in the continuous plating apparatus according to claim 4, wherein the non-conductor chemical-resistant coating is made of one of a fluorine resin, a vinyl chloride resin, a nylon and an epoxy resin.