JP7019458B2 - Metal leaf manufacturing equipment - Google Patents

Description

The present invention relates to a metal leaf manufacturing apparatus.

Conventionally, for example, as disclosed in Patent Document 1, an electrolytic cell in which an electrolytic solution is stored, an electrodeposition drum (electrode) provided in the electrolytic cell so that a part of the electrolytic cell is immersed in the electrolytic cell, and the electrodeposition thereof. It has an electrode plate (anode) that is provided so as to face the outer peripheral surface of the drum at predetermined intervals and is immersed in the electrolytic solution, and the outer periphery of the electrodeposition drum is applied by applying a voltage between the electrodeposition drum and the electrode plate. A metal foil manufacturing apparatus that electrolyzes and generates a metal foil on a surface is known.

In the metal leaf manufacturing apparatus, the concavely curved electrode plate is attached to the surface of a concavely curved conductive (for example, made of titanium) substrate, and the back surface of the concavely curved electrode plate is supported by a support provided on the bottom surface of the electrolytic cell. The configuration is generally (see FIGS. 3 and 4 of Patent Document 1).

By the way, the substrate is usually a single plate (thin plate), and the single plate is subjected to finish processing such as R bending and cutting to be concavely curved corresponding to the outer peripheral surface of the electrodeposition drum.

Therefore, in this conventional single plate substrate, the R dimension and the like may change over time due to the residual stress during the R bending process. In this case, even a slight dimensional change affects the thickness and quality of the ultra-thin metal foil, so that it is necessary to appropriately perform straightening processing and strain-removing heat treatment on the substrate, and the burden of this straightening cost is large.

Therefore, the applicant has made it possible to process the concave curved surface relatively easily and to minimize the influence of residual stress by using a configuration in which a plurality of rib bodies are arranged side by side instead of using a substrate to which the electrode plate is attached. However, we are proposing a metal leaf manufacturing device that can reduce straightening costs (Japanese Patent Application No. 2017-235854).

Japanese Unexamined Patent Publication No. 2004-332102

By the way, the electrode plate is connected to the substrate by a connecting bolt, and energization is satisfactorily performed in and around this connecting portion. Therefore, when a plurality of rib bodies are arranged side by side for attaching the electrode plate as described above, the connection points between the electrode plate and the rib body are distributed along the rib body. Naturally, there is no connecting portion in the portion without the body, and there is a possibility that the degree of energization varies between the portion with the rib body and the portion without the rib body, and the thickness of the generated metal foil becomes uneven.

The present invention has been made in view of the above-mentioned current situation, and provides an extremely practical metal leaf manufacturing apparatus capable of manufacturing a metal foil having less uneven thickness.

The gist of the present invention will be described with reference to the accompanying drawings.

The electrolytic cell 2 in which the electrolytic solution 1 is stored, the electrodeposition drum 3 provided in the electrolytic cell 2, and the electrode plate 4 provided in the electrolytic cell 2 so that the surface faces the outer peripheral surface of the electrodeposition drum 3. The surface of the electrode plate 4 is set to a concave curved surface along the outer peripheral surface of the electrodeposited drum 3, and the electrode plate 4 is provided in the electrolytic cell 2. The electrode plate 4 is provided with a bolt insertion hole 14 through which a connecting bolt 12 for connecting the electrode plate 4 to the electrode plate mounting body 5 is inserted. The back surface of the plate 4 is provided with a projecting body 15 arranged at a position not overlapping with the bolt insertion hole 14, and the electrode plate mounting body 5 is provided with a receiving portion 16 for receiving the projecting body 15. It relates to a characteristic metal foil manufacturing apparatus.

Further, an electrolytic cell 2 in which the electrolytic solution 1 is stored, an electrodeposition drum 3 provided in the electrolytic cell 2, and an electrode provided in the electrolytic cell 2 so that the surface faces the outer peripheral surface of the electrodeposition drum 3. In a metal foil manufacturing apparatus having a plate 4, the surface of the electrode plate 4 is set to a concave curved surface along the outer peripheral surface of the electrodeposited drum 3 facing the electrode plate 4, and the electrode plate 4 is inside the electrolytic cell 2. A plurality of rib bodies 6 whose front surface is concavely curved in the same manner as the concave curved surface of the electrode plate 4 are arranged side by side at predetermined intervals. The front surface of each rib body 6 is set to the electrode plate mounting surface 5'to mount the electrode plate 4, and the back surface of the electrode plate 4 is a plate-shaped plate arranged between the rib bodies 6. The present invention relates to a metal foil manufacturing apparatus characterized in that a projecting body 15 is provided and a receiving portion 16 for receiving the projecting body 15 is provided between the rib bodies 6.

Further, in the metal leaf manufacturing apparatus according to any one of claims 1 and 2, the metal leaf manufacturing apparatus is characterized in that the projecting body 15 and the receiving portion 16 are configured to be in close contact with each other. It is related.

Further, in the metal leaf manufacturing apparatus according to claim 1 , the projecting body 15 relates to a metal foil manufacturing apparatus characterized in that it has a plate shape.

Further, in the metal leaf manufacturing apparatus according to any one of claims 1 to 4, the electrode plate mounting body 5 is provided with a receiving member 17 having a contact surface in contact with the side portion of the projecting body 15. It is related to the metal leaf manufacturing apparatus characterized by.

Further, in the metal foil manufacturing apparatus according to any one of claims 1 to 5, a metal foil manufacturing apparatus is characterized in that a plating layer is provided at a contact interface between the projecting body 15 and the receiving portion 16. It is related to the device.

Further, in the metal leaf manufacturing apparatus according to any one of claims 1 to 6, the metal leaf manufacturing apparatus includes a tightening fixative 18 for tightening and fixing the projecting body 15 and the receiving portion 16. It is related to.

Since the present invention is configured as described above, it is an extremely practical metal foil manufacturing apparatus capable of manufacturing a metal foil having less uneven thickness.

It is schematic explanation side sectional drawing of this Example. It is a schematic explanatory perspective view of the main part of this Example. It is an enlarged schematic explanatory sectional view of the main part of this Example. It is a schematic diagram which shows the arrangement example of the protrusion of this Example. It is an enlarged schematic explanatory perspective view of the tightening fixative of this embodiment. It is a schematic explanatory perspective view of another example 1. FIG. It is schematic explanatory sectional drawing of another example 1. FIG. It is a schematic explanatory perspective view of another example 2. FIG. It is schematic explanatory sectional drawing of another example 2. FIG.

Embodiments of the present invention which are considered to be suitable will be briefly described by showing the operation of the present invention based on the drawings.

By receiving the projecting body 15 on the back surface of the electrode plate 4 by the receiving portion 16 of the electrode plate mounting body 5, energization is satisfactorily applied to the portion other than the connecting portion by the connecting bolt 12 between the electrode plate 4 and the electrode plate mounting body 5. It is possible to provide a place where it is performed.

Therefore, for example, when the electrode plate mounting body 5 is configured by arranging a plurality of rib bodies 6 side by side, a portion where energization is appropriately performed is provided in a portion without the rib body 6 (between the rib bodies 6). (It is possible to disperse and arrange the energized parts), and it is possible to manufacture a metal foil with as little thickness unevenness as possible.

Specific examples of the present invention will be described with reference to the drawings.

In this embodiment, the electrolytic cell 2 in which the electrolytic solution 1 is stored, the electrodeposition drum 3 provided in the electrolytic cell 2, and the inside of the electrolytic cell 2 so that the surface faces the outer peripheral surface of the electrodeposition drum 3. In a metal foil manufacturing apparatus having an electrode plate 4 provided, the surface of the electrode plate 4 is set to a concave curved surface along the outer peripheral surface of the electrodeposited drum 3 facing the electrode plate 4, and the electrode plate 4 is electrolyzed. The electrode plate mounting body 5 is attached to an electrode plate mounting body 5 provided in the tank 2, and the electrode plate mounting body 5 has a plurality of rib bodies 6 whose front surface is concavely curved in the same manner as the concave curved surface of the electrode plate 4 via predetermined intervals. The front surface of each rib body 6 is set to the electrode plate mounting surface 5'to which the electrode plate 4 is mounted, and the back surface of the electrode plate 4 is arranged between the rib bodies 6. A projecting body 15 is provided, and a receiving portion 16 for receiving the projecting body 15 is provided between the rib bodies 6.

That is, in this embodiment, as shown in FIG. 1, an electrolytic cell 2 in which the electrolytic cell 1 (copper sulfate solution) is stored and an electric voltage provided in the electrolytic cell 2 so that a part of the electrolytic cell 1 is immersed in the electrolytic cell 1. It has an electrodeposition drum 3 (cathode) and an electrode plate 4 (anode) provided so as to face the outer peripheral surface of the electrodeposition drum 3 at predetermined intervals and immersed in the electrolytic solution 1, and the electrodeposition drum 3 and the electrode plate. A metal foil is electrolyzed and generated (plated) on the outer peripheral surface of the electrodeposition drum by applying a voltage between the two. Further, in this embodiment, a pair of left and right electrode plates 4 are provided so as to face the left side and the right side of the immersion portion of the electrodeposition drum 3, respectively.

In the figure, reference numeral 8 is a rotation shaft of the electrodeposition drum 3, 9 is a support for supporting the electrode plate mounting body 5 to which the electrode plate 4 is attached, and 10 is an electrolytic solution 1 of the electrodeposition drum 3 and the electrode plate 4. It is a liquid supply unit that supplies to the facing gap.

In this embodiment, similarly to Japanese Patent Application No. 2017-235854, as shown in FIG. 2, a plurality of rib bodies 6 are arranged side by side so that the left and right side surfaces thereof face each other, and the front surface of each rib body 6 is electric. The electrode plate mounting surface 5'has a concave curved shape that matches the degree of curvature of the outer peripheral surface of the landing drum (the degree of curvature of the surface of the electrode plate 4). The electrode plate 4 is fastened to the electrode plate mounting surface 5'with a connecting bolt 12. Although the connecting bolt 12 has a general bolt shape in which the head protrudes when attached (for illustration purposes), it may be a countersunk bolt in which the head does not protrude.

The electrode plate 4 is made of titanium, and is a thin plate-like body that is concavely curved in the same manner as the concavely curved surface shape of the electrode plate mounting surface 5'. The electrode plate 4 may have a single plate shape or a split shape formed by arranging split bodies in parallel.

In this embodiment, a plurality of horizontally elongated plate-shaped divided bodies 13 are arranged side by side in the longitudinal direction of the electrode plate mounting body 5 to form the electrode plate 4. That is, each divided body 13 is provided with a bolt insertion hole 14 through which the connecting bolt 12 is inserted, and the bolt insertion hole 14 is provided so as to communicate with the screw hole 11 of the rib body 6 to which the connecting bolt 12 is screwed. ..

The rib body 6 is made of titanium and has a thickness in the front-rear direction that is at least twice the width in the left-right direction (in the drawings, the width in the left-right direction of the rib body 6 is exaggerated for explanation). .. By arranging a plurality of such rib bodies 6 side by side, the rigidity can be improved without increasing the volume (cost).

Further, the rib body 6 is configured to project in a direction orthogonal to the front surface (concave curved surface) of the electrode plate 4 (protruding vertically from the back surface of the electrode plate 4), and the rib bodies 6 are arranged side by side in parallel. Has been done.

In this embodiment, an energizing connecting body 7 for connecting one ends of the rib bodies 6 to each other is provided. The energizing connecting body 7 is a plate-shaped body having an L-shaped cross section, and the lower surface thereof is connected to the upper surface of the rib body 6 by welding.

One end of the rib body 6 is set to have a shape in which the thickness in the front-rear direction gradually increases toward the side of the energizing connecting body 7. The electrode plate mounting body 5 is connected to an electrode (not shown) via an energizing connecting body 7, but the rib body 6 has a shape as thick as the energizing connecting body 7 side so that both can be energized. It is possible to secure a wide contact area.

Further, at the other end of the rib body 6, a guide plate 31 for guiding the electrolytic solution 1 from the liquid supply unit 10 between the electrodeposition drum 3 and the electrode plate 4 is provided.

Further, the rib bodies 6 of the present embodiment are connected to each other by a connecting rod body 12 which is fixed by inserting and welding the insertion holes of the rib bodies 6 to each other. The connecting rod body 12 and each rib body 6 may be fixed by using other fixing methods such as screwing as well as welding.

In this embodiment, the projecting body 15 and the receiving member 17 are provided on the electrode plate 4 formed by arranging a plurality of horizontally elongated plate-shaped divided bodies 13 side by side and the electrode plate mounting body 5 having the rib structure. .. In this embodiment, the projecting body 15 is not provided on the divided bodies 13 at both ends in the longitudinal direction of the electrode plate 4.

Specifically, as shown in FIG. 3, the electrode plate mounting body 5 is provided with a receiving member 17 having a facing surface facing the side surface of the projecting body 15 (a contact surface in contact with the side portion of the projecting body 15). The facing surface of the receiving member 17 is set to the receiving portion 16. As shown in FIG. 4, the protrusions 15 (and the receiving portions 16) of the divided bodies 13 are arranged between the rib bodies 6 in a staggered manner so as not to overlap in the longitudinal direction of the electrode plates 4 (as shown in FIG. 4). The positions of the protrusions 15 in the width direction between the rib bodies 6 are changed.) This is to make the film thickness of the metal foil more uniform.

Further, the side surface of the projecting body 15 and the facing surface of the receiving member 17 are set to flat contact surfaces, and are configured to be in close contact with each other. The projecting body 15 and the receiving member 17 are entirely plated and provided with a plating layer on the surface. Therefore, a plating layer is provided at the contact interface between the projecting body 15 and the receiving member 17 (receiving portion 16). In this embodiment, platinum plating (platinum coating) is used in consideration of conductivity and corrosion resistance, but other materials may be used. It is sufficient that at least one of the projecting body 15 and the receiving member 17 is plated, and it is sufficient that at least the flat contact surface is plated instead of the entire projecting body 15 or the receiving member 17.

The projecting body 15 has a plate shape and is made of titanium similar to the electrode plate 4, and is fixed to the back surface of the electrode plate 4 by an appropriate method such as welding and is provided in an upright state. In this embodiment, the vertical plate 25 parallel to the longitudinal direction of the electrode plate 4 is set as the projecting body 15. In the figure, reference numeral 24 is a horizontal plate parallel to the width direction of the electrode plate 4.

At the end of the vertical plate 25, the receiving member 17 projecting toward the electrode plate mounting body 5 (one step higher than the horizontal plate 24 and the other parts of the vertical plate 25) is tightened together with the tightening fixture 18 described later. A protruding piece portion 26 to be fixed is provided. The projecting piece portion 26 is provided to tighten and fix the receiving member 17 and the projecting body 15 without interfering with the tightening fixture 18 and the horizontal plate 24.

It should be noted that the horizontal plate 24 may not be provided as in the other examples 1 and 2 described later, and in this case, the protruding piece portion 26 may not be provided.

Further, the receiving member 17 is a plate-shaped member having a downward U-shaped cross-sectional view in which sleeve portions 28 are vertically provided on the left and right sides of the base portion 27, and one of the sleeve portions 28 is appropriately welded to the side surface of the rib body 6. It is fixed by such a method, and is configured to receive the protrusion 15 at the other sleeve portion 28. That is, the outer surface of the other sleeve portion 28 that receives the projecting body 15 is the facing surface (receiving portion 16) that faces the side surface of the projecting body 15 (projecting piece portion 26). Further, the receiving member 17 is made of titanium similar to the rib body 6. The width of the base 27 is appropriately set for each corresponding split body 13 (according to the position of the projecting body 15 of each split body 13).

In this embodiment, as shown in FIG. 5, a tightening fixture 18 for holding and fixing the projecting body 15 and the receiving portion 16 in a close contact state is used. The tightening fixative 18 fastens and fixes the projecting body 15 (projecting piece portion 26) and the receiving member 17 in a state where they are in surface contact with each other. Specifically, the tightening fixative 18 is configured such that one end side of the pair of holding pieces 19 and 20 is rotatably attached to the shaft and the other end side is opened and closed. A long window-shaped insertion hole 22 through which a bolt 21 for tightening and fixing is inserted is provided on the other end side of the holding piece 19, and a screw hole 23 into which the bolt 21 is screwed is provided on the other end side of the holding piece 20. There is.

By using such a tightening fixative (clamping tool) 18, even if the number of connecting bolts 12 used is reduced, the contact area between the electrode plate 4 and the electrode plate mounting body 5 required for energization can be secured. The bolting process can be reduced and the replacement work time of the electrode plate 4 can be shortened accordingly (tightening and fixing with the tightening fixative 18 can manage the bolt tightening force to be a little rougher than the bolting process). ..

Therefore, in this embodiment, when the bolt insertion hole 14 of the split body 13 and the screw hole 11 are matched and the split body 13 is attached to the electrode plate holder 5 (rib body 6) with the connecting bolt 12, the projecting body 15 ( The side surface of the protruding piece portion 26) and the facing surface of the receiving member 17 are in contact with each other, and then a pair of holding pieces 19 and 20 are arranged so as to sandwich them, and the other end of the pair of holding pieces 19 and 20 is placed. By closing the side and inserting the bolt 21 for tightening and fixing into the insertion hole 22 and screwing it into the screw hole 23 to adjust the degree of tightening, the projecting body 15 and the receiving portion 16 of the receiving member 17 are in surface contact with each other. Both can be tightened and fixed in a state where they are brought into close contact with each other.

This tightening and fixing operation (operation of tightening and fixing the projecting body 15 and the receiving member 17 with the tightening fixture 18) can be performed from the front side of the electrode plate mounting body 5, together with the mounting work of the split body 13 (same as above). Since it can be done in the process), the workability is improved accordingly.

Therefore, a portion where the electrode plate 4 and the electrode plate mounting body 5 are in close contact with each other and good energization can be provided can be provided between the rib bodies 6, and the current is concentrated on a part of the electrode plate 4 in the width direction. It is possible to generate a metal foil having a film thickness as uniform as possible in the width direction of the electrode plate 4 with less uneven energization.

In this embodiment, an example in which the electrode plate mounting body 5 is composed of a plurality of rib bodies 6 is described, but the present invention is described as in another example 1 and another example 2 shown in FIGS. 6 to 9. It can also be applied to a plate-shaped electrode plate mounting body 5 similar to the conventional one. It should be noted that the first and second embodiments are the same as those of the present embodiment except for the configuration of the electrode plate mounting body 5 and the configurations of the projecting body 15 and the receiving member 17. Further, in the first and second examples, the connecting bolt 12 is a countersunk bolt.

Specifically, in another example 1 shown in FIGS. 6 and 7, a long window-shaped through hole 29 through which the plate-shaped projecting body 15 without the projecting piece portion 26 penetrates through the plate-shaped electrode plate mounting body 5. Is provided, and a receiving member 17 having an L-shaped cross section is provided on the peripheral edge of the through hole 29 on the back surface side of the electrode plate mounting body 5 (the side opposite to the surface on which the electrode plate 4 is provided). The facing surface of the rising portion of the receiving member 17 with the projecting body 15 is the receiving portion 16.

In this case, the divided body 13 of the electrode plate 4 is sequentially stacked on the electrode plate mounting body 5 in a state where the bolt insertion hole 14 and the screw hole 11 and the projecting body 15 and the through hole 29 are aligned with each other, and the connecting bolt 12 is used. At the same time, the tip portion of the projecting body 15 penetrating the through hole 29 and the receiving member 17 are fastened and fixed by the tightening fixative 18. In another example 1, the tightening and fixing operation is performed from the back side of the electrode plate mounting body 5.

Further, in another example 2 shown in FIGS. 8 and 9, a columnar bolt connecting portion 30 having a screw hole 11 formed in the plate-shaped electrode plate mounting body 5 and a plate-shaped receiving member 17 are erected. .. The surface of the receiving member 17 facing the projecting body 15 is the receiving portion 16.

In this case, the divided body 13 of the electrode plate 4 provided with the plate-shaped projecting body 15 having no protruding piece portion 26 on the back surface as in the case of the alternative example 1 is sequentially inserted into the bolt insertion hole 14 and the screw in the electrode plate mounting body 5. Stack the holes 11 in the same state, fix them with the connecting bolts 12, and tighten and fix the projecting body 15 and the receiving member 17 with the tightening fixers 18. In the second embodiment, the tightening and fixing operation can be performed from the front side of the electrode plate mounting body 5 as in the present embodiment.

Since this embodiment is configured as described above, the projecting body 15 on the back surface of the electrode plate 4 is received by the receiving portion 16 of the electrode plate mounting body 5, so that the connecting bolt 12 between the electrode plate 4 and the electrode plate mounting body 5 is received. It is possible to provide a portion where energization is performed well in a portion other than the connection portion by the above.

Therefore, even when the electrode plate mounting body 5 is configured by arranging a plurality of rib bodies 6 side by side, it is possible to provide a portion where energization is appropriately performed in a portion without the rib body 6 (between the rib bodies 6). It is possible to manufacture a metal foil having as little thickness unevenness as possible.

1 Electrolyte 2 Electrolyte tank 3 Electrodeposition drum 4 Electrode plate 5 Electrode plate mounting body 5'Electrode plate mounting surface 6 Rib body
12 Connecting bolt
14 Bolt insertion hole
15 projecting body
16 Receiving part
17 Receiving member
18 Tightening Fixture

Claims (7)

A metal foil manufacturing apparatus having an electrolytic cell in which an electrolytic solution is stored, an electrodeposition drum provided in the electrolytic cell, and an electrode plate provided in the electrolytic cell so that the surface of the electrolytic cell faces the outer peripheral surface of the electrolytic cell. The surface of the electrode plate is set to a concave curved surface along the outer peripheral surface of the electrodeposited drum facing the electrode plate, and the electrode plate is attached to an electrode plate mounting body provided in the electrolytic cell, and also. The electrode plate is provided with a bolt insertion hole through which a connecting bolt connecting the electrode plate to the electrode plate mounting body is inserted, and is arranged on the back surface of the electrode plate at a position not overlapping with the bolt insertion hole. A metal foil manufacturing apparatus characterized in that a projecting body is provided, and the electrode plate mounting body is provided with a receiving portion for receiving the projecting body. A metal foil manufacturing apparatus having an electrolytic cell in which an electrolytic solution is stored, an electrodeposition drum provided in the electrolytic cell, and an electrode plate provided in the electrolytic cell so that the surface of the electrolytic cell faces the outer peripheral surface of the electrolytic cell. The surface of the electrode plate is set to a concave curved surface along the outer peripheral surface of the electrodeposited drum facing the electrode plate, and the electrode plate is attached to an electrode plate mounting body provided in the electrolytic cell, and the electrode is formed. The plate mounting body has a configuration in which a plurality of rib bodies whose front surface is concavely curved in the same manner as the concave curved surface of the electrode plate are arranged side by side at predetermined intervals, and the front surface of each rib body is an electrode for mounting the electrode plate. It is set on the plate mounting surface, and a plate-shaped projecting body arranged between the rib bodies is provided on the back surface of the electrode plate, and a receiving portion for receiving the projecting body is provided between the rib bodies. A metal foil manufacturing device characterized by being The metal leaf manufacturing apparatus according to any one of claims 1 and 2, wherein the projecting body and the receiving portion are configured to be in close contact with each other. The metal leaf manufacturing apparatus according to claim 1 , wherein the projecting body has a plate shape. The metal foil manufacturing apparatus according to any one of claims 1 to 4, wherein the electrode plate mounting body is provided with a receiving member having a contact surface in contact with a side portion of the projecting body. Foil manufacturing equipment. The metal leaf manufacturing apparatus according to any one of claims 1 to 5, wherein a plating layer is provided at a contact interface between the projecting body and the receiving portion. The metal leaf manufacturing apparatus according to any one of claims 1 to 6, further comprising a tightening fixative for tightening and fixing the projecting body and the receiving portion.

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