A whole copper foil anode plate assembly capable of improving electrolysis efficiency and a copper foil jelly roll production machine thereof

Abstract

The application discloses a whole copper foil anode plate assembly capable of improving electrolysis efficiency and a copper foil growing machine for electrolysis, and belongs to the technical field of copper foil growing machines.The whole copper foil anode plate assembly is a whole anode plate, the lower part of the whole anode plate is provided with an arc-shaped bottom plate, a plurality of groups of back-pulling type connecting assemblies are uniformly and staggeredly arranged on the outer arc surface of the whole anode plate, and a plurality of holes corresponding to the back-pulling type connecting assemblies arranged on the outer arc surface of the whole anode plate and the conductive copper bars are formed in the arc-shaped bottom plate.The back-pulling type connecting mode of the arc-shaped bottom plate and the whole anode plate solves the problem of uneven discharge of the anode plate, and the clearance between the arc-shaped bottom plate and the whole anode plate can be reduced by staggered arrangement of connecting bolts.The conductive copper bars and the outer arc surface of the arc-shaped bottom plate are connected in a hot-assembly mode, power current is directly conducted to the whole anode plate, the conduction efficiency of the current is improved, and the efficiency of the electrolytic copper foil is indirectly improved.The whole copper foil anode plate assembly has the characteristics of simple structure, convenient installation and cost saving.

Description

Technical Field

[0001] This invention relates to the field of electrolytic copper foil technology, and in particular to an integral copper foil anode plate assembly that can improve electrolysis efficiency and its electrolytic copper foil production machine. Background Technology

[0002] Copper foil is a crucial material in the manufacture of copper-clad laminates and printed circuit boards. In today's rapidly developing electronics and information industry, electrolytic copper foil is often referred to as the "neural network" for signal and power transmission in electronic products. The preparation process of electrolytic copper foil involves rotating an energized cathode roller in an electrolytic cell filled with copper sulfate solution. An anode plate is installed at the bottom of the cell. Under the traction of the electric field, copper ions are deposited on the surface of the cathode roller. The cathode roller then rotates out of the electrolytic cell, and the copper foil is peeled off and wound up. Figure 6 As shown, existing anode plates are generally assembled from multiple anode plates, mainly including sheet anode plates, arc-shaped base plates, back-pull connection components, and conductive copper busbars. Each anode plate is connected to the arc-shaped base plate through a row of back-pull connection components, and the conductive copper busbars are installed on the arc-shaped base plate.

[0003] Chinese patent CN202482454U discloses a DSA integral titanium anode for an electrolytic copper foil production machine, mainly composed of an arc-shaped electrode substrate, a conductive connecting plate, and an active metal coating. The inner arc surface of the arc-shaped electrode substrate, made of industrial pure titanium or titanium alloy, is uniformly coated with the active metal coating, and at least one conductive connecting plate made of industrial pure titanium or titanium alloy is welded to the outer arc surface of the arc-shaped electrode substrate. However, the screw arrangement around the perimeter of the anode plate cannot guarantee a tight connection with the substrate, thus affecting the conductivity efficiency.

[0004] Chinese patent CN211079371U discloses an anode plate for a copper foil electrolytic cell, which is connected and fixed to the inside of the electrolytic cell by threaded connectors. Several independently formed anode plate units are included, each with a consistent structure, comprising an arc-shaped substrate and a grid-like surface layer formed on the surface of the arc-shaped substrate. Both the arc-shaped substrate and the grid-like surface layer are coated with a conductive oxide coating. Gaps between multiple anode plate units can affect conductivity and electrolysis efficiency.

[0005] Chinese patent CN214736152U discloses an anode structure for use in a copper foil production machine to improve copper foil quality and prevent leakage. The design includes irregular face-to-face contact between arc electrode plates, an array of conductive pillars, and an integral sealing ring, which eliminates the difficulty in ensuring the ideal installation accuracy of the anode due to manufacturing errors, installation errors, and site conditions. However, the anode plates are spliced ​​together, which affects the conductivity efficiency. Moreover, the arrangement of the conductive studs is relatively loose, and the number of conductive pillars is also small, which will affect the effect and efficiency of electrolytic copper foil. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, the present invention aims to provide an integral copper foil anode plate assembly and its electrolytic copper foil production machine that can improve electrolysis efficiency. The integral anode plate and the arc-shaped base plate are tightly connected by a back-pull connecting assembly, which can improve electrolysis efficiency, solve the problem of uneven discharge of the anode plate, and has the characteristics of simple structure, convenient installation and cost saving.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] An integral copper foil anode plate assembly for improving electrolysis efficiency includes an anode plate, characterized in that the anode plate is an integral anode plate.

[0009] The integral anode plate has an arc-shaped base plate at its lower part. Several sets of back-pull connecting components are evenly and alternately arranged on the outer arc surface of the integral anode plate. Each set of back-pull connecting components is separated by a conductive copper busbar on the outer arc surface of the integral anode plate. The arc-shaped base plate has round holes and square holes corresponding to the back-pull connecting components and conductive copper busbars on the outer arc surface of the integral anode plate, so that the back-pull connecting components and conductive copper busbars pass through the arc-shaped base plate, and the integral anode plate and the arc-shaped base plate are tightly fitted together.

[0010] The integral anode plate has a thickness of 5-10mm and is made of titanium.

[0011] The conductive copper busbar is connected to the outer arc surface of the integral anode plate by a heat-fitting method. Specifically, the integral anode plate is heated at a temperature of 450-500℃, and the integral anode plate is removed within 8 minutes of heating. The integral anode plate is then immediately assembled with the conductive copper busbar.

[0012] The conductive copper busbar has power connection holes at both ends.

[0013] The inner arc surface of the integral anode plate is coated with DSA.

[0014] The back-pull connection assembly includes an anode stud, one end of which is connected to the outer arc surface of the integral anode plate, and the other end of which is provided with a sealing ring. A sealing ring cover is provided on the upper part of the sealing ring, and a sealing nut is provided on the upper part of the sealing ring cover.

[0015] An electrolytic copper foil production machine includes an anode, wherein the anode is the aforementioned integral copper foil anode plate assembly that can improve electrolysis efficiency.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] An integral copper foil anode plate assembly that improves electrolysis efficiency features holes on its arc-shaped base plate corresponding to the back-pull connecting components and conductive copper busbars located on the outer arc surface of the integral anode plate. These holes allow the back-pull connecting components and conductive copper busbars to pass through the arc-shaped base plate, effectively solving the problem of uneven anode plate discharge. Furthermore, by replacing the existing sheet-type anode plate with an integral anode plate, and by using staggered anode studs, the gap between them is reduced. Considering material properties and deformation, the ratio of the total gap area to the anode plate area is reduced by 8%, further improving the uneven anode plate discharge problem. The conductive copper busbars are connected to the outer arc surface of the integral anode plate in a manner that... The heat-fit connection method allows the power supply current to be directly conducted to the integral anode plate through the conductive copper busbar, improving the current conduction efficiency and indirectly increasing the efficiency of copper foil electrolysis. Because the integral anode plate has several sets of back-pull connection components evenly and interlaced on its outer arc surface, each set separated by a conductive copper busbar on the outer arc surface, this not only reduces the number of back-pull connection components and improves the gap between the integral titanium plate and the arc-shaped base plate, thus increasing electrolysis efficiency, but also reduces the processing difficulty of the arc-shaped base plate, saving processing costs. The integral anode plate is easy to install and disassemble, greatly reducing the workload of operators and saving installation time.

[0018] In summary, this invention features a simple structure, convenient installation, and cost-effectiveness. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the integral anode plate and conductive copper busbar in this invention.

[0021] Figure 3 This is an assembly diagram of the integral anode plate and conductive copper busbar in this invention.

[0022] Figure 4 This is a partially enlarged view of the back-pull connection assembly in this invention.

[0023] Figure 5 This is a schematic diagram of the arc-shaped base plate in this invention.

[0024] Figure 6 This is a schematic diagram of the structure of the anode plate in the prior art.

[0025] Figure 7 This is a left view of the anode plate in the prior art.

[0026] The components include: 1. Integral anode plate; 2. Arc-shaped base plate; 3. Back-pull connection assembly; 4. Conductive copper busbar; 5. Round hole; 5-1. Square hole; 6. Power connection hole; 31. Anode stud; 32. Sealing ring; 33. Ring cap; 34. Sealing nut. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings.

[0028] Obviously, the embodiments described in this invention represent only a portion of the embodiments, and not all of them. Based on the embodiments of this invention, all technical terms used herein are commonly used in the art and are understood by those skilled in the art in the same way, and are all within the scope of protection of this invention.

[0029] Reference Figure 1 , Figure 5 An integral copper foil anode plate assembly for improving electrolysis efficiency includes an integral anode plate 1. Several sets of back-pull connecting components 3 are evenly and alternately arranged on the outer arc surface of the integral anode plate 1. Each set of back-pull connecting components 3 is separated by conductive copper busbars 4 disposed on the outer arc surface of the integral anode plate 1. An arc-shaped base plate 2 is provided at the lower part of the integral anode plate 1. (Refer to...) Figure 5 In order to maximize the conductivity of the power supply current, the conductive copper busbar 4 is used as the medium for conducting the power supply current to the integral anode plate 1. The arc-shaped base plate 2 has round holes 5 and square holes 5-1 corresponding to the back-pull connection component 3 and the conductive copper busbar 4 set on the outer arc surface of the integral anode plate 1, so that the back-pull connection component 3 and the conductive copper busbar 4 pass through the arc-shaped base plate 2.

[0030] The integral anode plate 1 has a thickness of 5-10mm and is made of titanium.

[0031] Reference Figure 2 , Figure 3 The conductive copper busbar 4 is connected to the outer arc surface of the integral anode plate 1 by a thermal connection method. Specifically, the integral anode plate 1 is placed in a heating furnace at a temperature of 450-500℃ and heated. After the furnace is opened, the integral anode plate 1 is removed within 8 minutes of heating and immediately assembled with the conductive copper busbar 4. The slot on the outer side of the integral anode plate 1 has a larger thermal expansion dimension, such as... Figure 3 As shown, the conductive copper busbar 4 is inserted into the slot on the outside of the integral anode plate 1. When the integral anode plate 1 is completely cooled, the slot on the outside of the integral anode plate 1 shrinks due to the cold shrinkage and becomes tightly connected with the conductive copper busbar 4. The force on the conductive copper busbar 4 is mainly its own weight and the force generated by the power line connection. The heat-fitting connection effect can meet the force requirements of the conductive copper busbar 4.

[0032] The conductive copper busbar 4 has power connection holes 6 at both ends. Through this structure, the power current is directly conducted to the integral anode plate 1 through the conductive copper busbar 4, which greatly improves the current conduction efficiency.

[0033] The inner arc surface of the integral anode plate 1 is coated with DSA to better improve the anode properties of the integral anode plate 1.

[0034] The arc-shaped base plate 2 is connected to the integral anode plate 1 by a back-pull connection, which allows for better contact between the arc-shaped base plate 2 and the integral anode plate 1.

[0035] Reference Figure 4 The back-pull connection assembly 3 includes an anode stud 31. One end of the anode stud 31 is connected to the outer arc surface of the integral anode plate 1, and the other end of the anode stud 31 is provided with a sealing ring 32. A sealing ring cover 33 is provided on the upper part of the sealing ring 32, and a sealing nut 34 is provided on the upper part of the sealing ring cover 33. The anode stud 31 is made of titanium. The anode stud 31 is staggered and welded to the outer arc surface of the integral anode plate 1. Similarly, in order to expose the anode studs 31 welded to the integral anode plate 1, the back-pull connection assembly 3 is staggered on the integral anode plate 1, which can effectively solve the problem of gaps where the bolts are not connected after the integral anode plate 1 is connected to the arc-shaped base plate 2. The conductive copper busbar 4 is heat-fitted onto the integral anode plate 1 and can also act as a reinforcing rib, which can effectively prevent gaps between the integral anode plate 1 and the arc-shaped base plate 2 where the anode studs 31 are not installed.

[0036] Comparative example: Refer to Figure 6 and Figure 7 The basic principle of electrolytic copper foil in existing technology is as follows: power is supplied through holes on both sides of a conductive copper busbar. The current flows through the conductive copper busbar and the arc-shaped base plate, and is finally conducted to the sheet anode plate. The sheet anode plate is energized, thus cooperating with the cathode roller to produce electrolytic copper foil. During operation, the power supply is conducted to the sheet anode plate through various media, resulting in significant energy loss. Furthermore, since the entire anode is composed of multiple sheet anode plates, the current transmitted to each sheet anode plate varies, leading to uneven current discharge. Gaps exist between the sheet anode plates, resulting in a spliced ​​anode plate with gaps. The inner surface of the spliced ​​anode plate is not perfectly smooth, and the weight of adjacent areas of the electrolytic copper foil is prone to deviation. The multi-sheet structure makes the installation and disassembly of the anode plate inconvenient. Because the sheet anode plates are connected by a row of back-pull connecting components, from a stress analysis perspective, the sheet anode plate and the arc-shaped base plate are actually in three-point contact. Figure 7As shown in the shaded area, there is a certain gap between the actual sheet anode plate and the arc-shaped base plate, indicating that the anode plate and the arc-shaped base plate are not completely fitted together. This also reduces the current conductivity from the arc-shaped base plate to the sheet anode plate. Moreover, there are gaps between multiple sheet anode plates, which will reduce the electrolysis efficiency when electrolyzing copper sulfate solution and may even affect the surface quality and service life of the electrolytic copper foil.

[0037] In this invention, an integral anode plate is used. Combining the material properties and deformation of the anode plate, the ratio of its total gap area to the anode plate area is reduced by 8%. By converting the contact area into resistance, the current conduction efficiency is increased by 12%. The efficiency of electrolytic copper foil is calculated by measuring the mass of electrolytic copper foil in the same time period, and the results show a year-on-year increase of 10%.

[0038] The present invention also provides an electrolytic copper foil production machine, including an anode, wherein the anode is the above-mentioned integral copper foil anode plate assembly that can improve electrolysis efficiency.

Claims

1. An integral copper foil anode plate assembly for improving electrolysis efficiency, comprising an integral anode plate (1) and an arc-shaped base plate (2) below it, characterized in that, The inner arc surface of the integral anode plate (1) is coated with DSA; the outer arc surface of the integral anode plate (1) is provided with conductive copper busbars (4) in the circumferential direction, and the conductive copper busbars (4) and the outer arc surface of the integral anode plate (1) are connected by heat fitting to form an interference fit; multiple sets of back-pull connection components (3) are evenly and staggered in the circumferential direction on the outer arc surface of the integral anode plate (1), and each set of back-pull connection components (3) is connected by conductive copper busbars (4) provided on the outer arc surface of the integral anode plate (1). 4) Separated; the back-pull connection assembly (3) includes an anode stud (31), one end of which is connected to the outer arc surface of the integral anode plate (1); the arc-shaped base plate (2) has a round hole (5) corresponding to the back-pull connection assembly (3) and a square hole (5-1) corresponding to the conductive copper busbar (4), so that the back-pull connection assembly (3) and the conductive copper busbar (4) pass through the arc-shaped base plate (2) respectively, and the integral anode plate (1) and the arc-shaped base plate (2) are attached.

2. The integral copper foil anode plate assembly for improving electrolysis efficiency according to claim 1, characterized in that, The conductive copper busbar (4) is connected to the outer arc surface of the integral anode plate (1) by a heat-fitting connection method. Specifically, the integral anode plate (1) is heated at a temperature of 450-500℃. The integral anode plate (1) is removed within 8 minutes of heating and immediately assembled with the conductive copper busbar (4).

3. The integral copper foil anode plate assembly for improving electrolysis efficiency according to claim 1, characterized in that, The other end of the anode stud (31) is provided with a sealing ring (32), the upper part of the sealing ring (32) is provided with a ring cover (33), and the upper part of the ring cover (33) is provided with a sealing nut (34).

4. The integral copper foil anode plate assembly for improving electrolysis efficiency according to claim 1, characterized in that, The integral anode plate (1) has a thickness of 5-10 mm and is made of titanium.

5. A copper foil producing machine, characterized in that, The anode is any one of the integral copper foil anode plate assembly according to claims 1 to 4 that can improve electrolysis efficiency.

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