JPH07180084A - Plating shielding device - Google Patents

Abstract

PURPOSE:To shorten the plating preparatory operation, to save manpower and to secure its safety by providing the new constitution of a shielding device to be used in the partial plating of a material such as a rolling roll. CONSTITUTION:A shielding cylinder 1 of a nonconductive material provided with a float 11, floating on a plating soln., covering the journal of a roling roll in plating and sunk in the soln. by the weight of the roll is furnished.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plating shield device mounted between an electrode and a material to be plated in a partial plating operation in a plating facility.

[0002]

2. Description of the Related Art When partially rolling a rolling roll or the like in a vertical plating tank, usually, as shown in FIG. 8, fixed shields 31 are attached to both ends of the roll shaft, and the other end is shown in FIG. It is fixed by the hanging jig 6 to change from horizontal hanging to vertical hanging.

The hanging jig 6 itself is provided with a collar 60, and as shown in FIG. 10, the collar 60 is brought into contact with the current collecting surface 51 of the frame body 50 provided around the plating tank 4. While being supported, it is supported by the frame body 50 and suspended in the plating tank 4. Electrolytic cleaning and electroplating are performed in such a state.

[0004]

When plating is applied, for example, if the rolling roll 3 is used, the journal portions 30 (bearing portions) at both ends do not need to be plated. On the contrary, the plating acts rather on the inconvenient side. Usually, the shielding material 100 is attached between the roll 3 and the electrode 5 and the plating operation is performed.

Conventionally, the shielding member 100 is mounted by wrapping a vinyl tape around the journal portion 30 in a horizontal state, and after electrolytic cleaning, the roll 3 is lifted by a crane, as shown in FIG.
In the vertical state as shown in FIG. 2, an operator enters under a suspended load and attaches the shield cylinder 100 to the fixed shield member 31 by bolting it, or by attaching a flange inlay or the like.

When the plating is completed, the shield cylinder 100 is removed from the plating tank 4, and the operator loosens the bolts under the umbrella of the crane to remove the shield cylinder 100.

With the above method, it takes a long time to attach and remove the shield cylinder 100. Shielding cylinder 1 at the end of plating
Shielding cylinder 100 where plating liquid remains when removing 00
However, there was a problem with the safety of the operator.

The present invention has been made in view of the above problems of the prior art, and proposes a new structure of a shielding device used for partial plating of a material to be plated such as a rolling roll, thereby preparing for plating. It aims to shorten work, save labor, and ensure its safety.

[0009]

Therefore, the plating shield device of the present invention floats on the plating liquid (in addition to the case where it floats by its own buoyancy, but also when it is equipped with a float and floats by it), and during plating. The basic feature is that a shielding cylinder made of a non-electrically conductive material is provided so as to cover a part of the material to be plated and sink into the plating solution due to the weight of the material to be plated.

The second aspect of the invention is, in addition to the above configuration, a configuration including a centering guide float connected to the periphery of the shielding tube via a link. However, the shielding cylinder according to the second aspect of the invention may be configured so as to float above the plating liquid due to its own buoyancy or the configuration of the float provided therein, or may be above the guide float to float above the plating liquid. .

[0011]

The shielding cylinder is floated on the plating liquid (by its own buoyancy, by the float provided therein, or by the guide float). When the material to be plated is transported to the central part of the plating tank by a crane or the like and gradually submerged in the plating solution, it comes into contact with the shield cylinder (or a fixed shield material etc. which is attached in advance), and this shield cylinder Part of it will be covered and it will sink further. That is,
The buoyancy acting on the shielding cylinder is lost by the weight of the rolled material,
This shield tube is submerged in the plating solution. During the subsequent plating treatment, the shield tube shields the portion of the material to be plated covered by the shield tube and the electrode so that the covered portion is not plated. When the material to be plated is gradually lifted after the plating is completed, the shielding tube also follows the surface and floats above the plating solution.

On the other hand, when the guide float for centering is provided as in the second aspect of the invention, the shield cylinder is located at the center of the plating tank when it is floating above the plating liquid. Next, when the material to be plated is submerged in the plating solution by a crane or the like, the shielding tube will come into contact with the material to be plated and cover a part thereof to sink together. At this time, the guide float for centering is further settled while approaching the periphery of the shield cylinder on the plating liquid as if closing the umbrella via the link. When the material to be plated is gradually lifted after completion of the plating process, the guide float as well as the material to be plated floats along with the shielding cylinder. When the material to be plated is completely lifted on the plating liquid, the guide float reaches the plating liquid surface, and then the shielding cylinder floats up to the plating liquid surface. At this time, the guide float horizontally spreads the plating liquid surface centering on the shield cylinder via the link. When the shield tube completely floats, the guide float contacts the periphery of the plating tank or the electrode, and the shield tube is automatically positioned at the center of the plating tank.

As described above, the shield tube is not attached in advance during the plating preparation work, but covers a part of the material to be plated when it is submerged in the plating solution, and shields between the electrode and the part. (Thus not necessarily a perfect seal). Further, the guide float acts so that the shielding cylinder is always located in the center of the plating tank, so that the shielding cylinder does not come into contact with the periphery of the tank and the electrode when the shielding cylinder floats.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a perspective view showing the construction of an embodiment of a plating shield device according to the first invention of the present application, which is used when partial plating of a rolling roll is performed in a vertical plating tank, and FIG. 2 is the shield device. FIG. 3 is an enlarged cross-sectional view of an upper portion of the shielding cylinder 1 that constitutes

Since the shielding device of this embodiment covers the journal portion of the rolling roll to shield between the portion and the electrode during the plating process, it is constituted by the cylindrical shielding cylinder 1, and On the upper part thereof, there is provided an expanded diameter opening portion 10 having a step portion 10a inside thereof which comes into contact with the tip of the fixed shielding material previously installed in the journal portion. In addition, as shown in FIG.
1 is provided to enhance the buoyancy of the shield cylinder 1. Further, a tube 12 having a liquid drain hole is provided in the lower part of the shield cylinder 1 so that the plating solution can easily enter and exit (the lower part may be in an open state).

The shield tube 1 is made of a material which is a non-electrically conductive member and is not corroded by a plating solution, such as vinyl chloride or FRP. The float 11 is also made of a similar material on its outer surface. Has been done. The inside of the float 11 has a structure in which it is a hollow structure to prevent the plating solution from entering, and a material that is lighter than the specific gravity of the plating solution and has corrosion resistance to the plating solution, such as Styrofoam. It is possible to use the structure manufactured in. The float 11 may be a ring-shaped integral body or a structure in which it is divided into several pieces with respect to the main body of the shield cylinder 1. If the float 11 is mounted above the central part of the shield cylinder 1 in the vertical direction, the float 11 can The shielding cylinder 1 is more stable in

FIGS. 3 to 7 show the construction of an embodiment of the plating shielding device according to the second invention of the present application, which has substantially the same construction as the above-mentioned embodiment. Therefore, the same numbers are given to those having the same configuration.

In the structure of this embodiment, the guide floats 2 are provided via the links 20 in the three directions around the outer surface of the expanded diameter opening portion 10 of the shield cylinder 1. The guide float 2 can be rotated up and down around the pin 21 of the link 20. The guide float 2 has the same structure and material as the float 11 of the shield cylinder 1. The size is such that the link 20 and the pin 21 thereof can be floated. As for the installation location, in order to always position the shield cylinder 1 at the center of the plating tank 4, in the present embodiment, as described above, there are three directions around the outer surface of the diameter expansion opening portion 10, but not limited to this. It is desirable to install at least 3 places in at least the circumferential distribution. On the other hand, the material of the link 20 is the shield cylinder 1.
Better than The pin 21a on the guide float 2 side shown in FIGS. 6 to 8 may be omitted and fixed as shown in FIGS. 4 and 5.

The operation of the above two embodiments will be described below. First, the description of the first embodiment will be given. The shield cylinder 1 is floated on the plating solution by the float 11 provided therein. When the rolling roll is transported to the center of the plating tank by a crane or the like and gradually submerged in the plating solution, the expanded diameter opening portion 10 of the shielding cylinder 1 comes into contact with the fixed shielding material on the roll side, and further this shielding cylinder. The lower end side journal portion is covered by 1 and sinks. During the subsequent plating process, the shield cylinder 1 shields the lower end journal portion and the electrode from each other so that this portion is not plated. When the rolling roll is gradually lifted after the plating is completed, the shielding cylinder 1 also follows the surface of the shield and floats above the plating liquid.

On the other hand, in the structure of the second embodiment, since the guide float 2 for centering is provided, when the shielding cylinder 1 is floating on the plating solution, as shown in FIGS. It is located in the center of the tank 4. Next, when the rolling roll 3 is submerged in the plating liquid by a crane or the like, the expanded diameter opening portion 10 of the shielding cylinder 1 contacts the fixed shielding material 31 attached to the lower end side journal portion 30 of the roll 3, and the journal portion 30 will be covered and will sink together. At this time, the link 20 rotates around the pin 21, and the guide float 2 for centering moves closer to the periphery of the shield cylinder 1 on the plating liquid as if closing the umbrella as shown in FIG. 5 or 7. Meanwhile, it further sinks. When the rolling roll 3 is gradually lifted after the plating process is completed, the guide float 2 as well as the shielding cylinder 1 floats up while following the rolling roll 3. When the roll 3 is completely lifted on the plating liquid, the guide float 2 reaches the plating liquid surface, and then the shielding cylinder 1 floats up to the plating liquid surface. At this time, the link 2
0 rotates about the pin 21 as a fulcrum, and the guide float 2
Spreads the plating liquid surface in the horizontal direction centering on the shield cylinder 1. When the shielding cylinder 1 is completely floated, the guide float 2 comes into contact with the periphery of the plating tank 4 or the electrode 5, and the shielding cylinder 1 is automatically moved.
Will be located in the center of the plating tank 4.

[0022]

According to the structure of the plating shield device of the present invention described in detail above, the partial plating is performed easily without the need of attaching the shield material in advance and for a short time without the manual work of the operator. Can be done within. Therefore, the operating time can be shortened and the safety can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing a configuration of an embodiment of a plating shield device according to the first invention of the present application, which is used when performing partial plating of a rolling roll in a vertical plating tank.

FIG. 2 is an enlarged cross-sectional view of an upper portion of a shielding cylinder that constitutes the shielding device.

FIG. 3 is a perspective view showing the configuration of an embodiment of a plating shield device according to the second invention of the present application, which is used when performing partial plating of a rolling roll in a vertical plating tank.

FIG. 4 is an enlarged cross-sectional view of an upper portion of a shielding cylinder that constitutes the shielding device.

FIG. 5 is an explanatory view of an operating state of a guide float in a vertical plating tank.

FIG. 6 is a vertical plating tank cross-sectional view showing a state in which the shielding cylinder main body is floated in the center of the plating tank by the guide float.

FIG. 7 is a cross-sectional view of a vertical plating tank showing the movement of the guide float in the plating solution by immersing the rolling roll in the plating solution and covering the lower end side journal portion with the shielding cylinder.

FIG. 8 is an explanatory view showing a mounting state of fixed shielding members mounted on both ends of a roll shaft when partially rolling a rolling roll or the like in a vertical plating tank.

FIG. 9 is a perspective view showing a configuration of a hanging jig.

FIG. 10 is an explanatory diagram showing an outline of a plating preparation work in which a rolling roll or the like is vertically hung in a vertical plating tank.

FIG. 11 is an explanatory diagram showing a state in which a shielding member is fixed after being vertically hung by a hanging jig when partially rolling a rolling roll or the like in a vertical plating tank.

[Explanation of symbols]

 1 shield cylinder 2 guide float 3 rolling roll 4 plating tank 5 electrode

(72) Inventor Takashi Hama 3-16, Utashima Nishiyodogawa-ku, Osaka City, Osaka Prefecture 3-16 Nomura Plating Co., Ltd. (72) Inventor Isamu 3-3-16, Utajima, Nishiyodogawa-ku, Osaka City, Osaka Prefecture Platter (72) Koji Sahara, 3-16 Utajima, Nishiyodogawa-ku, Osaka City, Osaka Prefecture 3-16 Nomura Plating Co., Ltd. (72) Kenji Sasaki, 3-16, Utajima, Nishiyodogawa-ku, Osaka City, Osaka Nomura Platter (72) Inventor Eizo Eizo 3-3-16 Utajima, Nishiyodogawa-ku, Osaka City, Osaka Prefecture 3-16 Nomura Plating Co., Ltd. (72) Manabu Kuramoto 3-16, Utajima, Nishiyodogawa-ku, Osaka City, Osaka Prefecture

Claims (2)

[Claims] 1. A shield tube made of a non-electrically conductive material that floats on a plating liquid and covers the part of the material to be plated during plating and sinks into the plating liquid due to the weight of the material to be plated. A characteristic plating shielding device. 2. A shield cylinder made of a non-electrically conductive material, which sinks in the plating liquid due to the weight of the plated material while partially covering the plated material during plating, and a link around the shield tube. A plating shielding device comprising a connected centering guide float.