JPS58107496A - Horizontal type electroplating installation - Google Patents

Abstract

PURPOSE:To uniformize the elution of a metal from the surface of an electrode, by providing a revolving endless current passing belt having a self-dissolving anode arranged thereto in a freely detachable manner to a horizontal metal strip continuous plating tank using the aforementioned anode to facilitate the replacement of the electrode. CONSTITUTION:A metal strip A is passed between self-dissolving anodes 12, 12 in a plating tank 11 to carry out plating on the surface thereof. The electrodes 12 arranged so as to leave gaps from the strip A are constituted in a state supported by the current passing belt 15 having split type mold members 120 endlessly arranged thereto so as to cross the strip A almost at right angles. The belt 15 is driven by a shaft 20 through belt wheels 16 contacted only with vicinities of both ends thereof and bevel gears 19 and receives a current by a current supply apparatus 22 while the tension thereof is adjusted by rolls 17. Plating to the end part of the strip A is prevented by an electrode shielding plate 23. Because the electrodes 12 are always moved, O2-bubbles are shaken off even if attached to the surface thereof and, therefore, they are not immobilized and elution can be made uniform.

Description

[Detailed Description of the Invention] The present invention relates to continuous horizontal electroplating equipment equipped with a self-fusing anode electrode for continuously electroplating metals such as zinc on the surfaces of IJ tubes. Continuous horizontal electroplating equipment equipped with a self-fusing anode device usually consists of a plating tank (1) and a metal strip (A) being continuously introduced into the plating tank (1) and K, as shown in Figure 1. death,
Seal roll ′<2 to force K to come out of the tank after plating
), an anode electrode (3) for electroplating the surface WiK of the metal strip in the plating tank (1), an energizing rod (5) that supports and energizes the anode electrode, and the entrance side KTo of the Japanese cypress.
The conductor roll (6) charges the metal strip negatively.

For the anode electrode 1i (3), in the case of a self-fusing anode electrode, as shown in Fig. 2, the anode electrode member made of the same type of metal as the plating/metal is divided, and a plurality of pieces are placed in the middle direction of the metal strip. In this case, the upper anode electrode member (1) has handles (4) formed on its shoulders at both ends, and is connected to the two current-carrying rods (5). ) The lower anode electrode member is placed in contact with and supported on two current-carrying rods (5) placed in the plating bath. The self-fusing anode electrode material size differs slightly depending on the conditions of use, but if electrolytic zinc plating is used, the size is 700 (length) x 5G (width) x
60~100 (thickness) W prismatic material is metal) IJ
A plurality of anodes are arranged and supported on a current-carrying rod so that the lip width (600~2300mm) is applied.The anode electrode configured in this way is placed in one plating tank with a metal strip along the running direction of the lip. ~3 groups will be arranged. In a practical line, 7 to 10 plating tanks are usually arranged in series. In a practical line for electric TL lead plating, such a self-fusing anode has a consumption thickness of approximately 1 wm/2 hr Ii direct. Although it mainly consists of gold, due to the non-uniformity of elution etc.
The reality is that all self-fusing anode electrode members of hr41C are replaced.The replacement work for these self-fluxing anode electrode members is usually done manually because the work is mainly done in the plating tank. One of the objects of the present invention is to solve the above-mentioned problem, which is a major problem when performing electroplating using a self-soluble anode, which takes a long time and requires a lot of time. In addition to making it easy to replace the self-fusing anode electrode member, which is a problem when continuously performing horizontal electric current using a self-fusing anode electrode,
To provide electroplating equipment that can shorten the time required for ICII as much as possible.Furthermore, when electroplating is performed using a self-fusing anode electrode, the plating process starts from the surface of the self-fusing anode electrode.
It is necessary to elute the metal uniformly, but gas is naturally generated between the surfaces of the self-fusing anode. The deposited Ol gas locally passivates the surface,
Therefore, plating/metal am release from the surface of the self-fusing anode electrode is inhibited.
There is a problem that I11 is difficult to coat and evenly it is not possible to uniformly plate the metal strip, and this is an attempt to solve this problem.

l of the present invention! Other purposes include electroplating [11 and I
An object of the present invention is to provide electroplating equipment that can uniformly elute plating and metal from the surface of an I-soluble anode electrode.

The present invention has been made to solve the above-mentioned problems.
It consists of an energizing belt for supporting the anode electrode arranged endlessly at predetermined intervals and almost orthogonal to the metal strip passing through the plating bath, and a split self-fusing anode electrode detachably attached to the belt by pressure. member, a pair of belt pulleys that support and move the belt once, a drive mechanism that drives the belt pulley, and an IDW! The present invention will be described below with reference to the embodiments shown in the drawings.

The horizontal electroplating equipment to which this invention is applied is shown in the schematic diagram of FIG.

Two self-fusing anode electrodes inside the plated cypress U (b) (b)
The surface of the metal strip is coated by passing the metal strip between the two. A pair of seal rolls (2) for allowing the metal strip to pass are provided at both ports of the plating tank Q vehicle in the direction of movement of the metal strip. Further, a conductor roll a4 is provided in the plating bath 11 for negatively charging the metal strip. The self-fusing anode electrode of the present invention has self-fusing anode electrodes (6
) is a split type self-fusing anode electrode member (120
) is supported in contact with an endless current-carrying belt (2). The pair of belt wheels (b) that rotate the endless energizing belt (g) are a disarmament version of KL7 so that they contact only the vicinity of both ends of the wrinkled belt. Soluble anode electrode member (ig
This prevents o) from coming into contact with the belt pulley (b) when it passes. The belt wheel (b) contacts only the vicinity of both ends of the energizing belt (6), and the self-fusing anode electrode member (120)
The axial inclination between the belt wheel and the belt wheel (to) constitutes a predetermined gap.The belt wheel (b) is connected to the drive shaft (hoto) that is applied from above the plating tank via bevel gears (b) provided at both ends. ) is connected to the ◎ current carrying belt (b), which is connected to the current carrying belt (b) which is rotated by a contact layer conducting device such as a carbon brush.
b) K is energized continuously. In FIG. 3, there are rollers near both ends of the belt, and 0η in the figure is a tension adjustment roll for the energized belt, which can be raised and lowered. 1+■
is a bearing, and 2) is an electrode shield plate to prevent over-plating on the end of the metal strip.

An example of attaching and detaching the self-fusing anode electrode member (120) to and from the current-carrying belt and its shape is shown in FIGS. 5, 6, and 7. FIG. (This is a detailed view showing one section of II. A through hole (■) is provided to open the energizing belt and the self-fusing anode electrode member (1).
20) is an enlarged detailed view showing an example of the device. FIG. 7 is a perspective view showing an example of a self-fusing anode electrode member (120).

A split type self-fusing anode electrode member (120) having a shape as shown in FIGS. 6 and 7 is attached to the opening (to) K of the belt. In this case, the self-fusing anode electrode member (120) has the length (color) of the split type self-fusing anode electrode member (120) longer than the horizontal length W of the opening S (c) of the current-carrying belt (b); The shoulders at both ends are provided with grooves (E) that fit into the inner edges of the opening of the current-carrying belt (E). Therefore, the self-soluble anode electrode member can be easily attached or detached through this opening by hand or using a jig or the like.

Next, we will describe a specific example of electroplating using the electroplating equipment according to the present invention. The electrode members shown in FIGS. 5, 6, and 7 were used as an energizing belt. Width 700 x 1 thickness approx. 10 m + T
14 alloy plate was used, and the self-fusing anode electrode member was 500X5.
0x30 (thickness) m, upper both ylIA1
The height is 23m and the width is 13 (width) by adding it to the shoulder part.
A groove portion of X20 (bound for Yoshi) and ■ (R-8 bound for Yoshi) was formed. It was manufactured by casting plated metal into a mold.

In this case, the weight of the electrode was 5 to 6 lb. One electrode was installed manually at a high position on the upper side while rotating the energizing belt little by little. ・The electroplated VCTo was used as an anode electrode at 60 A/dm. Electrolysis was carried out as follows, during which the energizing belt was rotated slowly and continuously.

A plurality of anode electrode members with a width of 50 mm are provided.
Even when passing through the belt wheel, the force can be rotated smoothly, and the anode electrode is self-fusing.
The coating was carried out to a thickness of S and was discarded as a remaining part of the plating bath. When used beyond that, the contact with the current-carrying belt mainly utilizes the weight of the self-fusing anode electrode member, so when the plating bath becomes thinner, the plating bath becomes thinner. This will lead to a decrease in contact depending on the liquid flow, etc.

After that, the self-soluble anode electrode was replaced manually, but since the weight of a single ridge is light and easy to handle, the removal and installation can be done by a person alone, making the work extremely labor-intensive. Because it is easy to replace, the replacement time per tank was reduced by 1/6 to 1/10 hr compared to the conventional method. Also, the self-fusing anode electrode member is made of metal) above the IJ tube.
I, it is necessary to change its shape depending on the bottom side! In addition, in this WA, the anode electrode was constantly moving due to the rotation of the belt, so there were O and gas bubbles on the surface of the anode electrode. However, if a belt wheel is used as the opposite electrode of the metal strip, the bubbles will be removed almost completely, so they will not become passivated.
Its elution can also be performed uniformly.

Therefore, the conventional 0 self-fusing anode electrode member was approximately 30 to 40
In contrast to the case where only a portion was discarded, only about 5 mg of residual material is required, and therefore, the thickness of the self-fusing anode electrode does not need to be increased in an efficient manner. This is a cause of poor handling. It should be noted that although the above description has been made mainly of electrogalvanizing, it goes without saying that this is applicable not only to zinc but also to other materials that can be coated with 4I using a self-fusing anode electrode such as Sn.

In the present invention, the case has been described in which the anode electrode member is mounted on the inside of one energizing belt, but it is also possible to mount the anode electrode on the outside of one energizing belt and run a metal strip on the outside of the energizing belt. In this case, it can be applied to single-sided electroplating.In addition, the attachment of the self-fusing anode electrode member of the current-carrying belt is not limited to the method described above, and simple fixing may be used, but the method described above It is more practical if it can be simply physically attached.

As described above, this problem was a major problem when electroplating the surface of a metal strip using self-fusing **tmt in horizontal electroplating equipment. By making it possible to easily replace the collecting electrode member by attaching it to or removing it from the current-carrying belt, this greatly reduces time and prevents localized passivation on the surface of the self-fusing anode electrode. It has excellent n7j effects such as uniform elution and effective use of the self-soluble anode electrode member.

[Brief explanation of the drawing]

Figure 1 is a schematic diagram of conventional horizontal electroplating equipment @Ilfrm
WJ, 萬 2 Figure 1 is a cross-sectional view taken along the lines X--X, Figure 3 is a side sectional view showing one embodiment of the present invention, and Figure 4 is a side sectional view showing one embodiment of the present invention.
The figure is a sectional view taken along the Y-X line in FIG. 3, FIG. 5 is a perspective view showing an example of the structure of the electrode member and the current-carrying belt, FIG. 6 is a side view thereof, and FIG. 7 is a perspective view of the electrode member. It is. Q... Plating tank, (B)... Self-fusing anode electrode, (L
l...: seal roll, αΦ...confi roll, (9)... energizing belt, ni)... belt wheel, (b)... tension adjustment roll, (to)... Axis, (6)...
・Bevel gear, (E)...Drive shaft, (C)...Bearing,
(2)... Conductive device, OI... Electrode breaker plate, (
property)...Opening, (2)...Through hole, (2)...Groove. Nippon Kokan Co., Ltd. Inventor Hakama wearing Hiroyuki Shii
Hiroshi No Kazuhiro Attorney and Physician Yoshi Otori Masaaki
Shigeru Nishino Mito
Speech by Yoshi Otori Hiroko Figure 6 Figure 7

Claims (1)

[Claims] An energized belt for supporting the anode electrode is arranged endlessly at a predetermined interval and perpendicular to the metal strip running in the plating tank, a pair of belt wheels supporting and rotating the armpit belt, and a pair of belt wheels for driving the belt wheel. 1. A horizontal electroplating equipment, characterized in that a drive mechanism and a conductive device made of Bell O contact are attached to a plating tank.