JPH0454221Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to an edge mask in a running strip plating device.

``Prior Art'' In plating equipment, a large current flows through both ends of the strip in the width direction, and the amount of plating is concentrated at both ends. This phenomenon becomes more pronounced as the electrode spacing becomes narrower, so for an anode with a narrow electrode spacing,
Edge masks are becoming more and more essential. On the other hand, as the spacing between the electrodes becomes narrower, it becomes more difficult to insert the edge mask, and the probability of contact and damage due to poorly shaped strips or meandering strips increases.
Various studies have been conducted on this problem, but it has been difficult to do so when the distance between the anode and the strip is less than 15 mm.

``Problem to be solved by the invention'' The invention of the present application is a strip plating device with a narrow electrode gap (approximately 5 to 15 mm) in which a plurality of insulating protrusions (stabilizers) are provided on the inner surface of the anode to narrow the electrode gap. The purpose is to prevent the amount of plating from concentrating on the edges.

``Means for Solving the Problems'' In order to solve the above-mentioned purpose, the present invention consists of arranging anodes facing each other in a liquid tank, running a strip between the facing anodes, and running a strip from the anode side to the inner surface of the facing anodes in the running direction. equipment for plating both sides of the strip by applying a voltage between the anode and the strip, and a pair of insulating protrusions located between the opposing anodes. An edge mask comprising a vertically disposed holder, a plurality of insulating edge masks having strip edge running grooves on the holder, and the masks being arranged between the protrusions; It is constructed by the edge mask described in the above invention whose width is wider than the width of the edge mask.

``Operation'' Therefore, by running the strip 3 between the anodes 2, 2 and applying a voltage between the anodes 2, 2 and the strip 3 to conduct current, plating is applied to both sides of the strip 3. be able to.
The running strip 3 has opposing insulating projections 4, 4.
When running between the inclined surface 4' and the strip 3
The strip 3 is removed by the action of the plating liquid between
The projections 4, 4 without contacting the projections 4, 4
The space between the opposing anodes 2, 2 can be narrowed. At the interval t between the protrusions 4, 4 in the strip running direction a, the edge parts (ear parts) 3', 3' of the strip 3 pass through the edge running grooves 6' of the edge masks 6, 6, and the grooves 6 Since ' is an insulator, the amount of plating is prevented from concentrating on the edge portions 3', 3', and uniform deposition in the width direction of the strip 3 is achieved.

The edge portion 3' of the strip 3 running between the anodes 2, 2 passes through an edge running groove 6' which is wider than the width between the opposing projections 4, 4.

``Example'' A machine frame 7 is provided on the upper part of the liquid tank 1, and a horizontal guide rod 8 is provided in the machine frame 7 in a direction parallel to the anodes 2, 2.
A pair of forward and reverse screw rods 10, 10 are attached to the female screws 9, 9 whose upper portions are slidably fitted to the guide rods 8.
are rotatably screwed together, and the upper ends of insulating plate-like holders 5, 5 are supported on the female screws 9, 9, respectively,
The holders 5, 5 are vertically disposed between the anodes 2, 2, and the female screws 9, 9 and the holders 5, 5 are moved toward and away from each other by forward and reverse rotation of the screw rods 10, 10 to adjust the width. can do. The anodes 2, 2 are provided with a plurality of horizontally elongated insulating protrusions 4, 4 at equal intervals t in the vertical direction on the opposing inner surfaces to form running stabilizers for the strip 3. This protrusion 4 has an inclined surface 4' which approaches the strip 3 side from the inner surface side of the anode 2 in the running direction a of the strip 3 running between the anodes 2, 2, and along this inclined surface 4'. The entrained plating liquid presses and guides the running strip 3 centrally between the opposing projections 4, 4, so that the strip 3 runs almost exactly along the center line between the anodes 2, 2, thereby It is possible to maintain the distance between the opposing anodes 2, 2 at about 5 to 15 mm. The protrusions 4, 4 may be provided in staggered positions on the inner surfaces of the opposing anodes 2, 2. The holders 5, 5 are vertically arranged between these narrow poles, and a plurality of insulating edge masks 6, 6 are provided on the holders 5, 5 at equal intervals t. This edge mask 6 has an edge running groove 6' of the running strip 3, and is disposed at the interval t between the projections 4, 4, that is, the part where the projection 4 is not present. By making the width s of the edge running groove 6' of this edge mask 6 wider than the width s between the opposing protrusions 4, 4, even if a poorly shaped portion or a strip 3 with a C-shaped curvature runs, The edge masks 6, 6 will not be damaged, and by making the grooves 6' deep, the edge mask 6 will not be damaged even if the strip 3 meanders or the strip width changes suddenly. The depth of the groove 6' is automatically controlled to be 100 to 150 mm, and the running depth of the edge portion 3' is approximately 5 mm. In addition, 1 in the figure
1 is a servo motor for forward and reverse rotation of the screw rods 10, 10, 12 is a center bearing, 13 is a holder support, 14 is a sensor on edge portion 3', 15
is the meandering and plate width controller of the strip 3.

``Effect of the invention'' Since the present invention is constructed as described above, even if the gap between the poles is narrowed by the stabilizer, the edge masks 6, 6 can be used and the amount of plating on the edge portions 3', 3' of the strip 3 can be reduced. It has the effect of suppressing concentration.

Furthermore, by forming the width of the edge running groove s wider than the width between the opposed projections 4, there is no risk of damage to the edge mask 6 due to poorly shaped strips or meandering strips.

[Brief explanation of the drawing]

Fig. 1 is a front view showing the edge mask of the present invention, Fig. 2 is a side view taken along line A-A in Fig. 1, Fig. 3 is a plan view taken along line B-B in Fig. 1, and Fig. 4 is a perspective view of the edge mask. , FIG. 5 is an enlarged plan view of the relationship between the facing protrusion and the edge running groove, and FIG. 6 is a perspective view of the plating device without an edge mask. 1... Liquid tank, 2... Anode, 3... Strip, a... Running direction, 4... Insulating protrusion, 4'...
Inclined surface, 5... Holder, 6... Edge mask, 6'... Edge running groove, t... Spacing part, s,
s...Width.

Claims (1)

[Claims for Utility Model Registration] (1) Anodes are disposed facing each other in a liquid tank, a strip is run between the facing anodes, and an inclined surface is provided on the inner surface of the facing anode, which approaches the strip side in the running direction from the anode side. equipment for plating both sides of the strip by applying a voltage between the anode and the strip; a pair of insulating holders vertically disposed between the opposing anodes; An edge mask comprising a holder including a plurality of insulating edge masks having strip edge running grooves, the masks being disposed at intervals between the protrusions. (2) The edge mask according to claim (1), wherein the width of the edge running groove is wider than the width between the insulating protrusions.