Apparatus for manufacturing copper foil

Abstract

The present disclosure relates to an apparatus for manufacturing a copper foil, the apparatus comprising: an electrolytic bath for accommodating an electrolyte; an injection unit for supplying the electrolyte to the electrolytic bath; a drum that rotates while at least a portion thereof is immersed in the electrolyte; a counter electrode disposed to be spaced apart from the drum in the electrolytic bath; a drum cover including a cover unit spaced apart from the surface of the drum and a frame unit that supports the cover unit; a support unit that supports the frame unit; and a fan coupled to the drum cover.

Description

[0001] [DESCRIPTION]

[0002] [Invention Title]

[0003] Copper Foil Manufacturing Apparatus

[0004] [Technical Field]

[0005] The present disclosure relates to a copper foil manufacturing apparatus.

[0006] [Background Art]

[0007] In the copper foil manufacturing process using the electrolytic electrodeposition method, a technology is widely used to electrodeposit copper ions in the electrolyte into a copper foil by using a rotating drum as an electrode. This type of rotating drum electrodeposition device is utilized in manufacturing processes for secondary batteries, electronic components, etc., because it offers excellent uniformity of copper foil thickness and production efficiency.

[0008] However, during the copper foil manufacturing process, acidic components may react to generate acid fumes when voltage is applied between the electrolyte and the electrode. These acid fumes may be re-adsorbed onto the drum surface or the electrodeposited copper film, forming an oxide film or diffusing into the equipment, potentially causing corrosion. In particular, the surface quality of the copper film may deteriorate or the uniformity of the film thickness may decrease due to the acid fumes.

[0009] [Disclosure]

[0010] [Technical Problem]

[0011] The problem that the present disclosure aims to solve is to prevent the drum from being oxidized by the external environment.

[0012] In addition, another problem that the present disclosure aims to solve is to prevent impurities supplied from the electrolytic cell from coming into contact with the drum surface.

[0013] However, the technical problems that the present invention aims to solve are not limited to those described above, and other unmentioned problems will be clearly understood by a person skilled in the art from the description of the invention below.

[0014] [Technical Solution]

[0015] The copper foil manufacturing apparatus of the present disclosure comprises: an electrolytic cell for receiving an electrolyte; a liquid injection unit for supplying the electrolyte to the electrolytic cell; a drum that rotates while at least a portion is impregnated with the electrolyte; a counter electrode disposed spaced apart from the drum within the electrolytic cell; a drum cover including a cover portion forming an air curtain area spaced apart from the surface of the drum and a frame portion supporting the cover portion; a support portion supporting the frame portion; a fan coupled to the drum cover to introduce external air into the air curtain area; and a power supply unit for applying voltage; wherein the external air is introduced into the air curtain area through the fan to prevent oxidation of the copper foil.

[0016] The cover portion may be formed as a curved surface corresponding to the shape of the drum. The frame portion includes a first body extending along the rotational direction of the drum and a second body extending along the axial direction of the drum, and the first body and the second body may be combined.

[0017] The above frame portion includes an upper frame and a lower frame arranged along the rotational direction of the drum, and the upper frame and the lower frame may each include a first body and a second body.

[0018] The lower frame further includes a mounting portion, and the upper frame can penetrate the mounting portion. The frame portion forms a plurality of contact points with the support portion, and at least some of the plurality of contact points, the frame portion is fixed by the connection portion with the support portion, and at the remaining portion of the plurality of contact points, the frame portion can be seated on the support portion.

[0019] Based on the rotational direction of the drum, among the plurality of contacts, the contact point where the frame portion is fixed by the coupling portion may be located inwardly compared to the contact point where the frame portion is seated on the support portion.

[0020] The above frame part and the above support part can be formed to be detachable.

[0021] Any one of the above supporting members may further include a connecting member that is coupled to one side of the above-mentioned recess.

[0022] The above frame portion includes a fixed bar extending along the axial direction of the drum, and the support portion includes an insertion groove with a recessed inner surface, and one end of the fixed bar may be placed in the insertion groove.

[0023] An air curtain region is formed between the surface of the drum and the cover portion, and at least a portion of the surface facing the axial direction of the drum and the surface facing the rotational direction of the drum may be open in the air curtain region.

[0024] The above cover portion includes an inner surface facing the surface of the drum and an outer surface formed on the opposite side of the inner surface, and the fan may be coupled to the outer surface. The fan may include a first fan disposed on one side of the outer surface of the drum along the axial direction of the drum and a second fan disposed on the other side.

[0025] The first fans are arranged in multiple numbers, and the multiple first fans may be spaced apart along the rotational direction of the drum. The driving speed of the multiple first fans may be adjusted equally. The driving speed of at least one of the multiple first fans may be adjusted differently from the driving speed of the remaining first fans. The second fans are arranged in multiple numbers, and the multiple second fans may be spaced apart along the rotational direction of the drum.

[0026] The driving speeds of the above multiple second fans can be adjusted equally.

[0027] The driving speed of at least one of the plurality of second fans can be adjusted differently from the driving speed of the remaining second fans.

[0028] The above cover portion may include a fold portion that is folded away from the drum along the rotational direction of the drum.

[0029] The above-mentioned bending portion may be formed at the rear end of the drum cover along the rotational direction of the drum.

[0030] [Advantageous Effects]

[0031] According to one embodiment of the present disclosure, the drum is prevented from being oxidized by the external environment.

[0032] In addition, it prevents impurities supplied from the electrolytic cell from coming into contact with the drum surface.

[0033] However, the effects obtainable through the present invention are not limited to the effects described above, and other technical effects not mentioned will be clearly understood by a person skilled in the art from the description of the invention below.

[0034] [Description of Drawings]

[0035] FIG. 1 illustrates a side view of a copper foil manufacturing apparatus according to one embodiment of the present disclosure. FIG. 2 illustrates a top view of a copper foil manufacturing apparatus according to one embodiment of the present disclosure.

[0036] FIG. 3 schematically illustrates a drum cover arranged according to one embodiment of the present disclosure.

[0037] Figures 4 and 5 illustrate region A of Figure 3.

[0038] Figure 6 illustrates region B of Figure 3.

[0039] Figure 7 illustrates region C of Figure 3.

[0040] FIGS. 8 to 10 illustrate the appearance of copper foil manufactured without a drum cover and a fan.

[0041] FIGS. 11 and 12 illustrate the appearance of copper foil manufactured using a drum cover and a fan.

[0042] [Mode for Invention]

[0043] Hereinafter, the present disclosure will be described in detail with reference to the attached drawings. However, this is merely illustrative and the present disclosure is not limited to the specific embodiments described illustratively.

[0044] Specific terms used in this specification are for convenience of explanation only and are not intended to limit the exemplified embodiments.

[0045] For example, expressions such as “identical” and “identical” indicate not only a strictly identical state, but also a state in which there is a tolerance or a difference in the degree to which the same function is obtained.

[0046] For example, relative or absolute 5 such as "in a certain direction," "along a certain direction," "parallel," "perpendicularly," "towards the center," "concentric," or "coaxial."

[0047] Correction Sheet (Rule 91) Expressions indicating an ISA / EP layout not only strictly indicate such layout, but also indicate a state of relative displacement with a tolerance or an angle or distance such that the same function is obtained.

[0048] To explain the present disclosure, the following description is based on a spatial orthogonal coordinate system formed by mutually orthogonal five axes, the Y-axis, and the Z-axis. Each axis direction (X-axis direction, Y-axis direction, Z-axis direction) refers to both directions in which each axis extends.

[0049] The five directions, five directions, and Z direction mentioned below are for the purpose of explaining the present disclosure so that it can be clearly understood, and it goes without saying that each direction may be defined differently depending on where the reference is placed.

[0050] The use of terms such as 'first, second, third,' etc., attached to the components mentioned below is intended solely to avoid confusion regarding the components being referred to, and is unrelated to the order, importance, or master-subordinate relationship between the components. For example, an invention including only the second component without the first component can also be implemented.

[0051] The terms used in this disclosure are for the description of specific embodiments and are not intended to limit the scope of the claims. As used in the description of embodiments and in the appended claims, the singular form is intended to include the plural form unless the context clearly indicates otherwise.

[0052] FIG. 1 illustrates a side view of a copper foil manufacturing apparatus (100) according to one embodiment of the present disclosure, and FIG. 2 illustrates a top view of a copper foil manufacturing apparatus (100) according to one embodiment of the present disclosure.

[0053] A copper foil manufacturing apparatus (100) according to one embodiment of the present disclosure comprises an electrolytic cell (210) for receiving an electrolyte (310), a supply portion (220) for supplying the electrolyte (310) to the electrolytic cell (210), a drum (230) that rotates with at least a portion impregnated in the electrolyte (310), a counter electrode (240) spaced apart from the drum (230) within the electrolytic cell (210), a drum cover (105) including a cover portion (110) spaced apart from the surface of the drum (230) and a frame portion (120) supporting the cover portion (110), a support portion (130) supporting the frame portion (120), and a fan (150) coupled to the drum cover (105).

[0054] A copper foil manufacturing apparatus (100) according to one embodiment of the present disclosure can prevent oxidation of the copper foil (300) through the fan (150).

[0055] Referring to FIG. 1, the copper foil manufacturing device (100) may include two electrodes. The two electrodes may each be a drum (230) and a counter electrode (240). The drum (230) and the counter electrode (240) may have opposite polarities. For example, the drum (230) may be a negative electrode and the counter electrode (240) may be a positive electrode.

[0056] When an electric current is applied, a metal may be deposited on the surface of the negative electrode among the two electrodes. For example, the metal may be electrodeposited on the surface of the drum (230). The metal may be deposited in the form of a thin film. The deposited metal thin film may be separated from the electrode to produce a metal foil. In the present disclosure, the metal foil may refer to a copper foil (300).

[0057] The electrolytic cell (210) can accommodate an electrolyte (310). At least a portion of the drum (230) may be impregnated with the electrolyte (310). The inner surface (111) of the electrolytic cell (210) may be formed to correspond to the shape of the drum (230). A counter electrode (240) may be placed on the inner surface (111) of the electrolytic cell (210). The drum (230) may be spaced apart from the counter electrode (240) and positioned to face the counter electrode (240). The counter electrode (240) may be formed in a semicircular shape and may be in a shape that surrounds the lower surface of the drum (230). The electrolyte (310) may flow between the counter electrode (240) and the drum (230).

[0058] The above electrolyte (310) can be supplied by the above injection part (220). One end of the above injection part (220) is located inside the electrolytic cell (210), and the above electrolyte (310) can be supplied between the counter electrode (240) and the drum (230).

[0059] The above electrolyte (310) can be used to electrodeposit a copper foil by contacting the drum (230) during the copper foil (300) manufacturing process. The above electrolyte (310) may be an aqueous copper sulfate solution containing copper ions. The above electrolyte (310) may optionally further include organic additives to improve the stability and quality of the electrodeposition reaction.

[0060] The drum (230) is a rotating electrode for electrodepositing a copper thin film and can be formed in a cylindrical shape. The drum (230) can be made of a conductive material such as copper or stainless steel. The surface of the drum (230) can be formed flat to form a uniformly electrodeposited copper thin film.

[0061] The drum (230) is installed to be rotatable about a horizontal axis and, while rotating, comes into contact with the electrolyte (310) to electrodeposit copper ions. At this time, the drum (230) can rotate while at least a portion of it is submerged in the electrolyte (310). Through this, a certain portion of the surface of the drum (230) comes into contact with copper ions in the electrolyte (310) to cause an electrochemical reaction, and a copper thin film can be continuously electrodeposited on the surface of the drum (230). Additionally, the drum (230) is connected to a drive unit capable of controlling the rotation speed, which can ensure uniformity of the electrodeposition thickness or facilitate the removal of oxygen bubbles or impurities in the electrolyte (310).

[0062] The copper foil manufacturing device (100) may further include a power supply unit (250) that applies voltage. The power supply unit (250) may be configured to apply current between the drum (230) and the counter electrode (240) so that copper ions in the electrolyte (310) are reduced to the surface of the drum (230) and electrodeposited as a copper thin film. The power supply unit (250) may be implemented as a DC power supply and may include a control unit capable of controlling voltage and current (A).

[0063] The power supply unit (250) can operate in a constant voltage or constant current mode within a set voltage range, thereby providing optimal electrochemical conditions for thickness uniformity, grain size control, and surface roughness improvement of the electrodeposition reaction. For example, during the electrodeposition process, the power supply unit (250) can apply a DC voltage of 0.5V to 5V, and the current density is 0.5 A / dm² 2 Up to 10 A / dm 2 It can be set as a range.

[0064] When power is applied, copper ions in the electrolyte (310) move to the drum (230) (cathode) to receive electrons and are reduced to copper metal, thereby electrodepositing a copper thin film on the surface of the drum (230). At the same time, an oxidation reaction occurs in the electrolyte (310) at the counter electrode (240) (anode), which may be an oxygen generation reaction or, if the counter electrode (240) is a copper plate, a copper ion elution reaction. Through this electrochemical reaction, a copper thin film having a uniform thickness and an excellent crystal structure is formed on the surface of the drum (230). The power supply unit (250) monitors parameters such as voltage, current, temperature, and electrodeposition time in real time during the electrodeposition process and can adjust them as needed. As a result, process stability for producing high-quality copper foil (300) can be ensured.

[0065] During the process in which an electrochemical reaction occurs when voltage is applied, acidic components in the electrolyte (310) may react and generate acid fumes. The acid fumes may be re-adsorbed onto the surface of the drum (230) or the copper film, or diffuse into the equipment, potentially causing corrosion of the equipment and deterioration of the copper film quality. In particular, if the acid fumes are re-adsorbed onto the surface of the copper film, they may cause the formation of an oxide film, which degrades the electrodeposition quality and may reduce the electrical properties or mechanical strength of the film.

[0066] The copper foil manufacturing apparatus (100) of the present disclosure may form an air curtain region (170) between the drum (230) and the drum cover (105) and apply positive pressure to the air curtain region (170). Specifically, the air curtain region (170) may be formed between the surface of the drum (230) and the cover portion (110). By positioning the air curtain region (170) on the surface of the drum (230), the inflow of impurities onto the surface of the drum (230) may be prevented. For example, acidic gas generated from the electrolytic cell may be prevented from diffusing to the surface of the drum (230). Since the acidic gas is prevented from reaching the surface of the drum (230), oxidation of the copper thin film may be suppressed and the electrodeposition quality may be improved.

[0067] The air curtain area (170) above can serve the role of preventing acid fumes from spreading to the surface of the drum (230) during the electrodeposition process.

[0068] In addition, the air curtain area (170) can reduce the concentration of acidic gases through the flow of external air and mitigate the corrosive environment inside the equipment, thereby improving the durability of the device. Through this, the copper foil manufacturing device (100) can stably manufacture high-quality copper thin films and has the advantage of reducing maintenance costs of the equipment.

[0069] Referring to FIGS. 1 and 2, the drum cover (105) may be positioned apart from the drum (230). The fan (150) may be coupled to the drum cover (105) to introduce external air into the air curtain area (170). This maintains positive pressure in the air curtain area (170), thereby preventing impurities supplied from the electrolytic cell (210) from coming into contact with the surface of the drum (230).

[0070] The air curtain area (170) may be formed with at least a portion of the face facing the axial direction of the drum (230) and the face facing the rotational direction of the drum (230) open. For example, the face facing the axial direction of the drum (230) may be open between the drum cover (105) and the drum (230), and the face facing the rotational direction of the drum (230) may be open between the drum cover (105) and the drum (230).

[0071] Air introduced through the above fan (150) can be discharged through the open side. When the fan (150) is operated, air is continuously introduced into the air curtain area (170) through the fan (150), and the introduced air is discharged through the open side, so that impurities will not be able to enter the air curtain area (170).

[0072] FIG. 3 schematically illustrates a drum cover (105) arranged according to one embodiment of the present disclosure, FIG. 4 and FIG. 5 illustrate area A of FIG. 3, FIG. 6 illustrates area B of FIG. 3, and FIG. 7 illustrates area C of FIG. 3. Specifically, FIG. 3 illustrates a top view of a copper foil manufacturing apparatus (100) of the present disclosure. In FIG. 3, the fan (150) is omitted. The drum cover (105) may include the cover portion (110) and the frame portion (120). The cover portion (110) may be spaced apart from the surface of the drum (230) to form the air curtain area (170). The frame portion (120) may support the cover portion (110).

[0073] The frame portion (120) is fixed at a position spaced apart from the surface of the drum (230) so that it can remain fixed regardless of the rotation of the drum (230). The cover portion (110) can be formed with a curved structure corresponding to the shape of the drum (230) (e.g., cylindrical shape). This allows the air curtain area (170) to be stably formed while maintaining a uniform spacing on the outer surface (112) of the drum (230).

[0074] The cover portion (110) is not directly coupled to the drum (230) but can be fixed at a certain distance from the drum (230) through the frame portion (120). Through this, the cover portion (110) can maintain a constant space (air curtain area (170) formed between it and the surface of the drum (230) without hindering the free rotation of the drum (230). Additionally, external air can be blocked from contacting the surface of the drum (230) with acid fumes by allowing external air to flow into the air curtain area (170) formed between the cover portion (110) and the surface of the drum (230).

[0075] The above cover portion (110) can be formed of plastic, corrosion-resistant metal, or other non-conductive material and can maintain stable structural characteristics even in a corrosive environment of acidic gas or electrolyte (310). As a result, the drum cover (105) of the present invention can improve the durability of the device and reduce equipment maintenance costs.

[0076] The above cover portion (110) may include an intake port, a nozzle, or a guide structure in addition to a curved shape so as to smoothly guide the external airflow entering through the air curtain area (170), thereby controlling the distribution of the airflow and designing it to reach the surface of the drum (230) uniformly.

[0077] The above cover portion (110) can perform the function of stably dispersing the flow of external air flowing into the air curtain area (170) through the fan (150). The fan (150) can be coupled to the above cover portion (110) and perform the function of introducing external air into the air curtain area (170).

[0078] The cover portion (110) may include an inner surface (111) facing the surface of the drum (230) and an outer surface (112) formed on the opposite side of the inner surface (111). The fan (150) may be coupled to the outer surface (112). The fan (150) may be coupled to the outer surface (112) of the drum cover (105) to introduce external air into the air curtain area (170).

[0079] The fan (150) may be implemented as a blower-type fan (150), an axial-type fan (150), or other small air conveying device, and may include a control unit capable of controlling the air flow rate and wind speed. Additionally, the fan (150) may operate in a continuous operation mode or a pulse operation mode to maintain a stable airflow within the air curtain area (170), thereby improving the electrodeposition quality and improving the corrosive environment within the facility.

[0080] The above-mentioned fan (150) may be composed of a plurality of fans. Referring to FIG. 2, the fan (150) may include a first fan (151) disposed on one side of the outer surface of the drum (230) along the axial direction of the drum (230) (e.g., the X-axis direction in FIG. 2) and a second fan (152) disposed on the other side. For example, the first fan (151) may be disposed at one end of the outer surface of the drum (230), and the second fan (152) may be disposed at the other end of the outer surface of the drum (230). The first fan (151) may be disposed in a plurality of numbers, and the plurality of first fans (151) may be spaced apart along the rotational direction of the drum (230). The second fan (152) may be arranged in multiple numbers, and the multiple second fans (152) may be spaced apart along the rotational direction of the drum (230).

[0081] Through this fan (150) arrangement structure, the air flow distribution within the air curtain area (170) can be maintained uniformly and the inflow of acidic gas can be prevented.

[0082] The fan (150) can adjust the airflow velocity, thereby optimizing the airflow speed within the air curtain area (170) according to the situation. For example, the driving speed of the plurality of first fans (151) can be adjusted equally. Each of the plurality of first fans (151) can be driven at a preset wind speed. The air volume of the fan can be 85 CFM to 95 CFM, and the wind speed of the fan can be 30 MPH to 40 MPH.

[0083] As another example, the driving speed of at least one of the plurality of first fans (151) may be adjusted differently from the driving speed of the remaining first fans (151). Specifically, among the plurality of first fans (151), the first fans (151) positioned on one side and the other side along the rotational direction of the drum may be driven at a faster wind speed than the remaining first fans (151). The driving speed of each of the plurality of first fans (151) may be controlled by taking into account the location of the acid gas intake section (not shown). One or more acid gas intake sections may be positioned on the side, front, and rear of the drum, but may vary depending on the process design.

[0084] Additionally, the driving speed of the plurality of second fans (152) can be adjusted equally. The driving speed of at least one of the plurality of second fans (152) can be adjusted differently from the driving speed of the remaining second fans (152). Among the plurality of second fans (152), the second fans (152) positioned on one side and the other side along the rotational direction of the drum can be driven at a faster wind speed than the remaining second fans (152).

[0085] The above cover portion (110) may include a bent portion (117) that is bent in a direction spaced apart from the drum (230) along the rotational direction of the drum (230). The bent portion (117) may be formed at the rear end of the cover portion (110) along the rotational direction of the drum (230). The bent portion (117) is formed by the end of the drum cover (105) being bent outward along the extension of the curved shape of the cover portion (110), and may be positioned opposite the filling roll (270) with respect to the rotational direction of the drum (230).

[0086] Referring to FIGS. 1 and 2, the bending portion (117) may be formed in the area where the copper foil (300) is separated from the drum (230) and transferred to the next process. Through the bending shape of the bending portion (117), the movement path of the copper foil (300) immediately after peeling can be stably maintained. In addition, irregular movement of the copper foil (300) that may occur when the bending portion (117) is absent can be reduced.

[0087] The above-mentioned bending portion (117) can regulate the airflow between the cover portion (110) and the peeling roll (270) or form an auxiliary discharge path for acidic gas. Through this, the above-mentioned bending portion (117) can provide various effects such as ensuring the transport stability of the peeled copper foil (300), improving electrodeposition quality, and improving the process environment within the facility.

[0088] The copper foil manufacturing device (100) may further include a peeling roll (270). The copper foil (300) electrodeposited on the drum (230) may be transferred to the peeling roll (270) according to the rotation of the drum (230). The peeling roll (270) may rotate. The peeling roll (270) may receive the copper foil (300) peeled from the surface of the drum (230). The peeling roll (270) may supply the copper foil (300) to the next process. The frame portion (120) may include a first body (1201) extending along the rotational direction of the drum (230) and a second body (1205) extending along the axial direction of the drum (230). The first body (1201) and the second body (1205) can be combined to form a rigid structure.

[0089] Referring to FIG. 3, the first body (1201) may have a curved structure along the rotational direction of the drum (230) and may be formed in multiple units. The second body (1205) may extend along the axial direction (X-axis direction in FIG. 3) of the drum (230) and may be formed in multiple units. The first body (1201) and the second body (1205) may be connected by welding and may form a grid structure. This allows the support member (130) to be stably placed on the frame member (120). The copper foil manufacturing device (100) may include a support member (130) that supports the frame member (120). The support member (130) is a structure for supporting the frame member (120) at a position spaced apart from the drum (230). The support member (130) may be fixedly installed on the main body of the device, but is not limited thereto. The support member (130) may contact the frame member (120) through a plurality of contacts.

[0090] The above support members (130) may be provided in multiple numbers. The multiple support members (130) may be spaced apart along the rotational direction of the drum (230). Through this arrangement structure, even if the drum cover (105) is provided in a shape corresponding to the outer surface of the drum (230), the support members (130) can stably support the drum cover (105).

[0091] Additionally, a plurality of support members (130) may be arranged to face each other with the drum (230) in between. Some of the plurality of support members (130) may be arranged to face one side of the drum (230). The remaining parts of the plurality of support members (130) may be arranged to face the other side of the drum (230). The frame member may be supported by the support members (130) arranged on one side of the drum (230) and the other side of the drum (230), respectively.

[0092] For example, referring to FIGS. 1 to 3, the plurality of support members (130) may each be positioned to face one side and the other side of the drum (230) with the drum (230) in between. The support member (130) positioned on one side of the drum (230) may be positioned to correspond to the support member (130) positioned on the other side of the drum (230).

[0093] Through this, the frame part (120) is stably supported along the rotational direction of the drum (230), and both ends of the drum cover (105) are balancedly supported in the axial direction, so that the structure can be stably maintained without affecting the rotation of the drum (230).

[0094] Specifically, FIG. 4 shows the frame part (120) and the support part (130) joined by the connecting part (160), and FIG. 5 shows the same area as FIG. 4 viewed from the opposite side.

[0095] At least one of the plurality of support members (130) may include a recessed portion (135) with an inner surface that is recessed. The frame member (120) may be placed in the recessed portion (135). By placing the frame member (120) in the recessed portion (135), the position of the frame member (120) can be stably fixed even in the event of external pressure or impact. Referring to FIGS. 4 and 5, the frame member (120) may further include a fixing bar (127). The fixing bar (127) may extend along the axial direction of the drum (230) and protrude to both ends of the drum cover (105). At least a portion of the fixing bar (127) may be placed on the support member (130). The fixing bar (127) may be any one of the second bodies (1205). However, the fixed bar (127) may be extended along the axial direction of the drum (230) longer than the length of the drum (230).

[0096] One end of the fixed bar (127) can be placed in the recess (135). This allows the fixed bar (127) to be stably placed in the support (130).

[0097] The above-mentioned recess (135) may be formed in a groove shape having a circular, square, or polygonal cross-section corresponding to the cross-sectional shape of the above-mentioned fixed bar (127). By receiving the above-mentioned fixed bar (127) in the above-mentioned recess (135), the above-mentioned frame part (120) can be stably supported by the above-mentioned support part (130).

[0098] To prevent the fixed bar (127) from moving in the axial direction of the drum (230), a fixed jaw, recess, or locking structure may be additionally formed within the recess (135). This prevents the fixed bar (127) from moving or disengaging in the axial direction within the recess (135) and allows the position of the frame part (120) to be maintained stably.

[0099] Additionally, to prevent the fixed bar (127) from moving upward, the connecting part (160) may be connected to one side of the recessed part (135). For example, the connecting part (160) may be connected to the upper part of the recessed part (135). The connecting part (160) may be positioned on the upper part of the support part (130). The connecting part (160) may be formed by fastening means such as a pin, bolt, or clip. The connecting part (160) may be connected to the upper part of the recessed part (135) so that the fixed bar (127) does not move upward. Referring to FIG. 4, the recessed part (135) may be recessed from the upper part of the support part (130) toward the lower part, and the fixed bar (127) may be moved from the upper part of the support part (130) toward the lower part and positioned in the recessed part. By connecting the above connecting part (60) to the upper part of the above recess (135), the fixing bar (127) can be prevented from being separated from the above recess (135).

[0100] The frame portion (120) and the support portion (130) may be formed to be detachable. The frame portion (120) is maintained in a seated or fixed state on the support portion (130), but when the connection between the coupling portion (160) and the recessed portion (135) is released when necessary, the fixing bar (127) can be easily separated from the recessed portion (135), so that the entire frame portion (120) can be easily detached from the support portion (130). Through this, the drum cover (105) can be quickly separated during maintenance, cleaning, replacement, etc., and maintenance efficiency can be greatly improved without complex disassembly procedures.

[0101] The drum cover (105) is structured to be joined only by the support member (130) and the joining member (160), and can be stably fixed without separate additional support members or auxiliary fixing members. This structure provides structural simplicity and ease of attachment / detachment, thereby simplifying the assembly / disassembly of the equipment and increasing process efficiency. The copper foil manufacturing device (100) of the present disclosure may include an upper frame (121) and a lower frame (125) arranged along the rotational direction of the drum (230). The frame member (120) may include a plurality of frames. The frame member (120) may be formed by assembling the plurality of frames. Although only the upper frame (121) and the lower frame (125) are illustrated in the present disclosure, it is obvious that additional separate frames may be included.

[0102] If the above frame part (120) is formed as a single unit, the structural stability of the frame is reduced, and the difficulty of manufacturing in the manufacturing process may increase. Therefore, the above frame part (120) can be manufactured separately and then assembled to form the frame part (120).

[0103] The upper frame (121) and the lower frame (125) may each include a first body (1201) and a second body (1205). The first body (1201) and the second body (1205) of the upper frame (121) may be combined to form a lattice structure. The first body (1201) and the second body (1205) of the lower frame (125) may be combined to form a lattice structure.

[0104] The lower frame (125) further includes a mounting portion (1251), and the upper frame (121) can penetrate the mounting portion (1251). Through this, the upper frame (121) can support the load of the lower frame (125).

[0105] Referring to FIGS. 3 to 5, the upper frame (121) and the lower frame (125) may be arranged sequentially along the rotational direction of the drum (230). Additionally, among the second bodies (1205) of the upper frame (121), the second body (1205) closest to the lower frame (125) may be extended in length to form a fixed bar (127). The fixed bar (127) may be coupled to the support part (130), and the mounting part (1251) of the lower frame (125) may be penetrated by the fixed bar (127). Through this, the upper frame (121) can stably support the load of the lower frame (125).

[0106] Specifically, FIG. 6 illustrates one end of the lower frame (125) being supported by a support member (130), and FIG. 7 illustrates one end of the upper frame (121) being supported by a support member (130). Referring to FIG. 6, one end of the lower frame (125) may be placed on or fixed to the support member (130). Likewise, referring to FIG. 7, one end of the upper frame (121) may be placed on or fixed to the support member (130).

[0107] FIGS. 8 to 10 illustrate the appearance of copper foil manufactured without a drum cover and a fan, and FIGS. 11 to 12 illustrate the appearance of copper foil manufactured using a drum cover and a fan.

[0108] Referring to FIGS. 8 to 10, surface damage to the copper foil is confirmed. Referring to FIGS. 11 to 12, it is confirmed that the surface of the copper foil is not damaged.

[0109] The present disclosure may be modified and implemented in various forms, and the scope of rights is not limited to the embodiments described above. The above description is merely an example of applying the principles of the present disclosure, and other configurations may be further included without departing from the scope of the present invention.

[0110] Explanation of drawing symbols

[0111] 210: Jeonhae Jo

[0112] 220: Main amount part

[0113] 230: Drum

[0114] 240: Counter electrode

[0115] 105: Drum Cover

[0116] 130: Support part

[0117] 150: Fan

[0118] 21

[0119] Correction Form (Rule 91) ISA / EP

Claims

[CLAIMS]

1. Electrolytic cell for accommodating electrolyte; A liquid injection unit that supplies electrolyte to the above-mentioned electrolytic cell; A drum rotating with at least a portion impregnated with the above electrolyte; A counter electrode disposed spaced apart from the drum within the electrolytic cell; A drum cover comprising a cover portion spaced apart from the surface of the drum and a frame portion supporting the cover portion; A support member supporting the above-mentioned frame member; and A copper foil manufacturing apparatus comprising a fan coupled to the drum cover.

2. In Paragraph 1, A copper foil manufacturing device in which the above cover portion is formed as a curved surface corresponding to the shape of the drum.

3. In Paragraph 1, The above frame portion includes a first body extending along the rotational direction of the drum and a second body extending along the axial direction of the drum, and A copper foil manufacturing device in which the first body and the second body are combined.

4. In Paragraph 3, The above frame portion includes an upper frame and a lower frame arranged along the rotational direction of the drum, and The upper frame and the lower frame each comprise a copper foil manufacturing device including a first body and a second body.

5. In Paragraph 4, The lower frame further includes a mounting portion, and the upper frame is a copper foil manufacturing device penetrating the mounting portion.

6. In Paragraph 1, The above support members are provided in multiple numbers, and A copper foil manufacturing device in which at least one of the plurality of support members includes a recessed portion having an inner surface that is recessed.

7. In Paragraph 6, The above frame part is a copper foil manufacturing device placed in the above-mentioned recess.

8. In Paragraph 6, A copper foil manufacturing device in which the above frame part and the above support part are formed to be detachable.

9. In Paragraph 6, A copper foil manufacturing apparatus comprising a supporting member that further includes a connecting member coupled to one side of the recessed member.

10. In Paragraph 6, The above frame portion includes a fixed bar extending along the axial direction of the drum, and the support portion includes an insertion groove with a recessed inner surface, and A copper foil manufacturing device in which one end of the above-mentioned fixed bar is placed in the above-mentioned insertion groove.

11. In Paragraph 1, A copper foil manufacturing apparatus in which an air curtain region is formed between the drum and the drum cover, and the air curtain region is formed with at least a portion of the surface facing the axial direction of the drum and the surface facing the rotational direction of the drum open.

12. In Paragraph 1, The above cover portion includes an inner surface facing the surface of the drum and an outer surface formed on the opposite side of the inner surface, and The above fan is a copper foil manufacturing device coupled to the above outer surface.

13. In Paragraph 12, A copper foil manufacturing apparatus comprising a first fan disposed on one side of the outer surface of the drum along the axial direction of the drum and a second fan disposed on the other side.

14. In Paragraph 13, A copper foil manufacturing apparatus in which the first fans are arranged in a plurality, and the plurality of first fans are spaced apart along the rotational direction of the drum.

15. In Paragraph 14, A copper foil manufacturing device in which the driving speeds of the plurality of first fans are adjusted equally.

16. In Paragraph 14, A copper foil manufacturing device in which the driving speed of at least one of the plurality of first fans is adjusted differently from the driving speed of the remaining first fans.

17. In Paragraph 13, A copper foil manufacturing apparatus in which the above-mentioned second fans are arranged in a plurality, and the plurality of second fans are arranged spaced apart along the rotational direction of the drum.

18. In Paragraph 17, A copper foil manufacturing device in which the driving speeds of the plurality of second fans are adjusted equally. [Claim 1 In Paragraph 17, A copper foil manufacturing device in which the driving speed of at least one of the plurality of second fans is adjusted differently from the driving speed of the remaining second fans.

20. In Paragraph 1, A copper foil manufacturing apparatus comprising a cover portion that is bent in a direction away from the drum along the rotational direction of the drum.

21. In Article 20, A copper foil manufacturing device in which the above-mentioned bending portion is formed at the rear end of the drum cover along the rotational direction of the drum.

Images