Electrolyte supply nozzle device for metal foil forming apparatus

Abstract

The present invention relates to an electrolyte supply nozzle device for a metal foil forming apparatus, improved to enable precise and stable supply of an electrolyte in a flat form. The present invention provides an electrolyte supply nozzle device for a metal foil forming apparatus, comprising: at least one supply port provided to supply at high pressure an electrolyte containing dissolved metal ions to a gap formed at the underside of a drum roll of the metal foil forming apparatus; a decompression chamber connected to an upper end portion of the supply port to decompress and allow flow of the electrolyte supplied through the supply port; and a nozzle tip provided to communicate with an upper portion of the decompression chamber to discharge and supply the electrolyte from the decompression chamber to the gap, wherein a cavity and a discharge lip are continuously formed in the longitudinal direction of the nozzle tip by the nozzle tip and the decompression chamber to discharge and supply the electrolyte to the gap in a flat form, and a plurality of orifices communicating with the cavity are continuously formed at a lower portion of the cavity.

Description

Electrolyte supply nozzle device for metal foil forming device

[0001] The present invention relates to an electrolyte supply nozzle device for a metal foil forming device, and more specifically, to an improved electrolyte supply nozzle device for a metal foil forming device that supplies electrolyte in a precise and stable flat shape.

[0002] Metal foils, such as copper foil, which are several micrometers to several tens of micrometers thick and used in many electrical and chemical products, including secondary batteries, can be manufactured by an electrolytic (or electrolytic) method.

[0003] Figure 1 shows a configuration diagram of a metal foil forming device that forms the metal foil by an electrolytic method.

[0004] Referring to Fig. 1, a metal foil forming device (1) is configured to include a drum roll (2), which is a cathode electrode, and an electrolytic cell (5) that rotatably supports the drum roll (2).

[0005] And the electrolytic cell (5) is provided with a frame (6), a pair of anode bases (18, 19), a plurality of support beams (15), a pair of current buses (21), and an electrolyte supply nozzle (25).

[0006] In addition, the frame (6) has a front wall and a back wall (not shown) that rotatably support a rotating shaft (not shown) of a drum roll (2), a left wall (7) and a right wall (8) that are erected on the left and right sides of the drum roll (2), and left and right inner curved walls (11, 12) that are arranged spaced apart from the lower part of the outer surface of the drum roll (2).

[0007] And the above pair of anode bases (18, 19) are formed to be curved so as to be spaced apart from the lower outer surface of the drum roll (2), and are divided into a left anode base (18) that is relatively closer to the left wall (7), and a right anode base (19) that is relatively closer to the right wall (8).

[0008] Meanwhile, a plurality of thin electrode plates (not shown) are attached to the inner surface of a pair of anode bases (18, 19) facing the outer surface of the drum roll (2).

[0009] Additionally, a gap (20) is formed between the plurality of electrode plates and the outer surface of the drum roll (2).

[0010] And the plurality of support beams (15) are members that support a pair of anode bases (18, 19) spaced apart from the right and left inner curved walls (11, 12), and have a cross-section that is generally shaped like the letter I and extends parallel to the Y-axis.

[0011] In addition, the plurality of support beams (15) are arranged at equal angular intervals with respect to the center of rotation of the drum roll (2).

[0012] And a pair of current buses (21, 22) are for supplying current to a pair of anode bases (18) and a plurality of electrode plates attached thereto, and one (21) of the pair of current buses (21, 22) is electrically connected to the left end of the left anode base (18) and the other (22) is electrically connected to the right end of the right anode base (19).

[0013] In addition, the electrolyte supply nozzle (25) supplies the electrolyte to the gap (20), is arranged between the left and right anode bases (18, 19), and extends parallel to the Y-axis.

[0014] And, to prevent the frame (6) from being exposed to the electrolyte and corroded, the inner surfaces of the front and rear walls (not shown) of the frame (6) and the upper surfaces of the left and right inner curved walls (11, 12) are coated with rubber.

[0015] Additionally, the electrolytic cell (5) is supported by a pair of anode bases (18, 19) by a plurality of spaced support beams (15).

[0016] However, the conventional metal foil forming device configured as described above had a problem in that the quality of the metal foil was deteriorated when the electrolyte supply nozzle (25) supplied an uneven electrolyte when manufacturing the metal foil using an electrolytic method.

[0017] In addition, the conventional electrolyte supply method using the electrolyte supply nozzle (25) is a method of supplying by drilling a hole in a pipe, and thus metal ions are delivered in the form of dots to the drum roll (2) of the cathode, which has the problem of causing a vortex phenomenon in the electrolyte and a deviation in the composition of metal ions in the thickness of the metal foil.

[0018] And there was a problem that a wave pattern appeared on the surface of the manufactured metal foil.

[0019] The present invention was created to solve the above problems, and the purpose of the present invention is to provide an electrolyte supply nozzle device for a metal foil forming device that improves the quality of metal foil by supplying the electrolyte in a precise and stable flat shape rather than in the existing dot shape, and prevents the eddy phenomenon of the electrolyte, the deviation of the metal ion composition in the thickness of the metal foil, and the occurrence of a wave pattern on the surface of the metal foil.

[0020] As a technical solution for achieving the above purpose, the electrolyte supply nozzle device for a metal foil forming device of the present invention is:

[0021] In an electrolyte supply nozzle device for a metal foil forming device,

[0022] At least one supply port provided to supply an electrolyte containing dissolved metal ions at high pressure to a gap formed at the bottom of the drum roll of the metal foil forming device;

[0023] A decompression chamber connected to the upper end of the supply port and formed so that the electrolyte supplied through the supply port is depressurized and flows;

[0024] A nozzle tip is provided in communication with the upper part of the decompression chamber, and is formed so that the electrolyte is discharged and supplied from the decompression chamber to the gap;

[0025] A cavity and a discharge lip are formed continuously in the longitudinal direction of the nozzle tip by the above nozzle tip and the above decompression chamber, so that the electrolyte is discharged and supplied into the gap in a flat form.

[0026] The lower portion of the cavity is characterized by a plurality of orifices continuously formed in communication with the cavity.

[0027] In the present invention, a distribution groove is formed at the upper portion of the decompression chamber so that the electrolyte introduced into the decompression chamber is mixed and dispersed, and the electrolyte is uniformly distributed and discharged through all the orifices.

[0028] In the present invention, two supply ports are provided at regular intervals.

[0029] In the present invention, the upper portion of the cavity and the discharge lip are formed to be inclined at a predetermined angle.

[0030] In the present invention, the decompression chamber is provided perpendicular to the supply port.

[0031] In the present invention, the nozzle tip is provided so as to be separable from the decompression chamber, and the shape, inclination angle, and width of the side surface of the nozzle tip can be varied.

[0032] In the present invention, the cross-sectional area of ​​the decompression chamber is formed to be wider than the cross-sectional area of ​​the supply port.

[0033] According to an embodiment of the present invention, by supplying the electrolyte in a precise and stable flat shape instead of the conventional dot shape supply method, the quality of the metal foil can be improved, and the eddy phenomenon of the electrolyte, deviation in the metal ion composition of the metal foil thickness, and occurrence of a wave pattern on the surface of the metal foil can be prevented.

[0034] Figure 1 is a configuration diagram of a metal foil forming device according to a conventional technique.

[0035] Figure 2 is a perspective view showing the external configuration of an electrolyte supply nozzle device for a metal foil forming device according to the present invention.

[0036] Figure 3 is a partial cross-sectional view of Figure 2.

[0037] Figure 4 is a longitudinal cross-sectional view of Figure 2.

[0038] Figure 5 is an exploded view of Figure 4.

[0039] Figures 6 to 11 are computer simulation drawings showing the state in which the electrolyte supplied into the electrolyte supply nozzle device for the metal foil forming device according to the present invention flows according to changes in pressure (Pa) and flow rate (m / s).

[0040] Hereinafter, a preferred embodiment according to the present invention will be described in detail with reference to the attached drawings.

[0041] FIG. 2 is a perspective view showing the external configuration of an electrolyte supply nozzle device for a metal foil forming device according to the present invention.

[0042] And Fig. 3 shows a partial cross-sectional view of Fig. 2.

[0043] Additionally, Fig. 4 shows a cross-sectional view of Fig. 2, and Fig. 5 shows an exploded view of Fig. 4.

[0044] Before the explanation, the metal foil forming device applied to the electrolyte supply nozzle device according to the present invention will be referred to in Fig. 1, which has already been described.

[0045] Referring to FIGS. 2 to 5, an electrolyte supply nozzle device for a metal foil forming device according to the present invention comprises a plurality of supply ports (110) provided to supply electrolyte with high pressure so that an electrolyte containing dissolved metal ions can be supplied to a gap (see 20 of FIG. 1) formed at the bottom of a drum roll (see 2 of FIG. 1) of a cathode of a metal foil forming device of FIG. 1, a decompression chamber (140) connected to the upper end of the supply ports (110) so that the electrolyte introduced through the supply ports (110) is decompressed and flows, and a nozzle tip (170) provided in communication with the upper end of the decompression chamber (140) so that the electrolyte is discharged and supplied to the gap (20).

[0046] And, a cavity (143a, 143b) and a discharge lip (142a, 142b) are formed continuously in the longitudinal direction of the decompression chamber (140) and the nozzle tip (170) by the nozzle tip (170) and the decompression chamber (140), so that the electrolyte is discharged and supplied to the gap in a flat form.

[0047] Additionally, a plurality of orifices (144) that are connected to the cavities (143a, 143b) are continuously formed at the bottom of the cavities (143a, 143b).

[0048] And, on the upper part of the decompression chamber (140), a distribution groove (140a) is formed to cause the electrolyte flowing into the decompression chamber (140) to flow and mix, so that the electrolyte is uniformly distributed and discharged through all of the orifices (144).

[0049] Additionally, two supply ports (110) are provided at regular intervals.

[0050] However, the number of supply ports (110) is not limited to two, and the number of supply ports (110) installed may vary depending on the length of the decompression chamber (140).

[0051] And the upper portion of the cavity (143a, 143b) and the discharge lip (142a, 142b) are formed to be inclined at a predetermined angle (e.g., about 45 degrees) so that the electrolyte is uniformly discharged and supplied to the entire gap.

[0052] That is, the cavity (143a, 143b) and the discharge lip (142a, 142b) are formed opposite to each other on the left and right sides of the center of the decompression chamber (140) and the nozzle tip (170) and are inclined in opposite directions.

[0053] In addition, the above decompression chamber (140) is provided perpendicular to the supply port (110).

[0054] That is, the above decompression chamber (140) is installed across the upper portion of the supply port (110) and is supported by the supply port (110).

[0055] At this time, the cross-sectional area of ​​the decompression chamber (140) is formed to be wider than the cross-sectional area of ​​the supply port (110).

[0056] And, as shown in FIG. 5, the nozzle tip (170) is provided so as to be separable from the decompression chamber (140), and the shape, inclination angle, and width of the side surface (171, 172) of the nozzle tip (170) can be varied.

[0057] In addition, when the height of the electrolyte supply nozzle device for the metal foil forming device according to the present invention can be varied, the height dimension of the nozzle tip (170) can also be varied.

[0058] In this way, the cross-sectional area or inclination angle (or electrolyte discharge angle) of the cavity (143a, 143b) and discharge lip (142a, 142b) can be varied, so that the discharge amount, discharge direction, and discharge speed of the electrolyte discharged through the discharge lip (142a, 142b) can be easily controlled.

[0059] In addition, by providing the nozzle tip (170) in a detachable manner, the manufacturing (or processing) of the electrolyte supply nozzle device is easy, and the control of the dimensions (or size) of the cavity (143a, 143b) and the discharge lip (142a, 142b) is also easy.

[0060] In addition, the electrolyte is depressurized by the formation of the cavity (143a, 143b) and discharge lip (142a, 142b) and is discharged and supplied to the gap at a uniform pressure.

[0061] The operation of the electrolyte supply nozzle device for a metal foil forming device according to the present invention having the configuration described above is described as follows.

[0062] Referring again to FIGS. 2 to 5, the electrolyte supply nozzle device for a metal foil forming device according to the present invention is configured to supply the electrolyte in a precise and stable flat shape rather than in a conventional dot shape.

[0063] That is, in the past, when manufacturing metal foil such as electrolytic copper foil, the quality of the metal foil was lowered due to the uneven supply of the electrolytic solution, and the metal ions were delivered in the form of dots to the drum roll (2), which caused a eddy phenomenon in the solution and a deviation in the composition of the metal ions in the thickness of the metal foil, and there was a problem of a wave pattern appearing on the surface of the metal foil.

[0064] Accordingly, the electrolyte supply nozzle device for a metal foil forming device according to the present invention supplies a solution containing dissolved metal ions, i.e., an electrolyte, through two or more supply ports (110), and forms a stable distribution of metal ions by mixing the supplied high-pressure solution through decompression, deceleration, and mixing in a decompression chamber (140).

[0065] And, an even electrolyte can be sprayed through a plurality of orifices (144) formed at regular intervals on the upper part of the decompression chamber (140).

[0066] In addition, secondary pressure reduction and uniform pressure are formed in the precision-machined cavity (143a, 143b), and the electrolyte can be naturally discharged along the inclined structure between the cavity (143a, 143b) and the discharge lip (142a, 142b).

[0067] And, since the discharge lip (142a, 142b) is formed continuously in the longitudinal direction of the nozzle tip (170), a flat electrolyte can be discharged at regular intervals.

[0068] Meanwhile, the discharge lip (142a, 142b) can be adjusted to a desired result value by adjusting the gap and changing the shape of the nozzle tip (170) as needed.

[0069] This is made possible in particular by the nozzle tip (170) being provided so as to be separable from the decompression chamber (140).

[0070] In addition, FIGS. 5 to 10 are drawings showing the flow state of the electrolyte supplied into the electrolyte supply nozzle device for the metal foil forming device according to the present invention according to changes in pressure (Pa) and flow rate (m / s) through computer simulation.

[0071] As seen in FIGS. 6 to 11, it can be seen that the electrolyte supplied into the electrolyte supply nozzle device for the metal foil forming device according to the present invention flows stably and naturally and is discharged in a flat shape through the discharge lip (142a, 142b).

[0072] As described above, the present invention has been described with reference to one embodiment shown in the drawings, but this is merely exemplary, and those skilled in the art will understand that various modifications and equivalent embodiments are possible therefrom.

[0073] Therefore, the true scope of protection of the present invention should be determined solely by the appended claims.

[0074] By supplying the electrolyte in a precise and stable flat form rather than the existing dot form, the quality of the metal foil is improved, and the eddy phenomenon of the electrolyte, deviation in the composition of metal ions in the thickness of the metal foil, and wave patterns on the surface of the metal foil are prevented, so it is applicable industrially.

Claims

1. In an electrolyte supply nozzle device for a metal foil forming device, At least one supply port provided to supply an electrolyte containing dissolved metal ions at high pressure to a gap formed at the bottom of the drum roll of the metal foil forming device; A decompression chamber connected to the upper end of the supply port and formed so that the electrolyte supplied through the supply port is depressurized and flows; A nozzle tip is provided in communication with the upper part of the decompression chamber, and is formed so that the electrolyte is discharged and supplied from the decompression chamber to the gap; A cavity and a discharge lip are formed continuously in the longitudinal direction of the nozzle tip by the above nozzle tip and the above decompression chamber, so that the electrolyte is discharged and supplied into the gap in a flat form. An electrolyte supply nozzle device for a metal foil forming device, characterized in that a plurality of orifices communicating with the cavity are continuously formed at the lower portion of the cavity.

2. In paragraph 1, An electrolyte supply nozzle device for a metal foil forming device, characterized in that the above decompression chamber has a distribution groove formed therein so that the electrolyte introduced into the decompression chamber is mixed and uniformly distributed and discharged through all of the orifices.

3. In paragraph 1, An electrolyte supply nozzle device for a metal foil forming device, characterized in that the above supply ports are provided in two at regular intervals.

4. In paragraph 1, An electrolyte supply nozzle device for a metal foil forming device, characterized in that the upper portion of the cavity and the discharge lip are formed to be inclined at a predetermined angle.

5. In paragraph 1, An electrolyte supply nozzle device for a metal foil forming device, characterized in that the above decompression chamber is provided perpendicular to the above supply port.

6. In paragraph 1, An electrolyte supply nozzle device for a metal foil forming device, wherein the nozzle tip is provided so as to be separable from the decompression chamber, and the shape, inclination angle, and width of the side surface of the nozzle tip can be varied.

7. In paragraph 1, An electrolyte supply nozzle device for a metal foil forming device, characterized in that the cross-sectional area of ​​the above decompression chamber is formed with a wider cross-sectional area than the cross-sectional area of ​​the above supply port.

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