Corrosion equipment of anode foil for aluminum electrolytic capacitor

Abstract

The invention discloses corrosion equipment for an anode foil for an aluminum electrolytic capacitor, and relates to the technical field of aluminum electrolytic capacitor preparation, the corrosion equipment comprises a main body and an aluminum foil roll, two ends of the main body are fixedly provided with supporting frames, and the interiors of the two supporting frames are rotatably connected with an unwinding mechanism and a winding mechanism respectively; connecting mechanisms are fixed to the two sides of the unwinding clamp and the two sides of the winding clamp correspondingly. When the winding clamp drives the aluminum foil to move, the front end part of the aluminum foil can be driven to enter the electrolyte along the guide rail by matching with the track of the guide rail to carry out electrolytic corrosion operation, so that the problem that the part of the aluminum foil which is manually pulled out and fixed at the beginning of the existing electrolytic corrosion equipment is occupied in a starting preparation link of the equipment is solved; the problems of no contact with electrolyte in the whole process, no electrolysis process and lack of key corrosion treatment steps in the prior art are solved, so that a roll of aluminum foil completely reaches the performance standard required by an anode foil finished product, the problem of waste generation is avoided, the production cost is reduced, and the production benefit is increased.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum electrolytic capacitor preparation, in particular to an anode foil etching device for aluminum electrolytic capacitors. Background Art

[0002] In recent years, with the rapid development of the electronics industry, electrolytic capacitors have been mass-produced and widely used as indispensable components in electronic products. Among them, aluminum electrolytic capacitors are widely used in energy storage, audio coupling, and DC isolation due to their large capacitance, small size, light weight, and low price. At the same time, with the continuous development of the information industry, the replacement of mobile phones, monitors, and motherboards has further expanded the market for aluminum electrolytic capacitors, especially the rapid expansion of the market for complete machine products such as communication products, computers, and home appliances. The demand for electrolytic capacitors has also risen sharply, greatly accelerating the development of the electrode foil industry, and also putting forward higher technical and quality requirements for the manufacturing industry of electrode foil, and the requirements for the performance and reliability of corroded aluminum foil are also getting higher and higher.

[0003] Anode foil for aluminum electrolytic capacitors needs to undergo a specific corrosion process to increase the surface area and thus increase the capacitance. This process is mainly achieved with the help of special corrosion equipment. In the structure of conventional anode foil corrosion equipment for aluminum electrolytic capacitors, the unwinding mechanism is responsible for the initial release of the aluminum foil raw material, and the rewinding mechanism cooperates with it to be responsible for uniformly recovering the aluminum foil after electrolysis in the electrolyte, ensuring the continuity of the entire production process, so that the aluminum foil can continue to be immersed in the electrolyte to accept electrochemical corrosion, and gradually form an ideal microscopic porous structure. In the prior art, before the equipment is operated, the operator has to manually pull the aluminum foil out of the unwinding mechanism for a certain length, and then accurately fix this part of the aluminum foil at the corresponding position of the rewinding mechanism. Only after completing this fixing process can the subsequent normal electrolysis process be officially started, so that the subsequent aluminum foil continuously output from the unwinding end can smoothly undergo electrochemical corrosion reaction in the electrolyte.

[0004] In the above process, the part of aluminum foil that was initially manually pulled out and fixed was occupied in the equipment startup preparation link. It did not come into contact with the electrolyte throughout the whole process, did not undergo the electrolysis process, lacked the key corrosion treatment step, and could not meet the performance standards required for the finished anode foil. It could only become waste, resulting in unnecessary loss of fixed-length aluminum foil every time the machine was started up, increasing production costs and reducing production efficiency. Summary of the invention

[0005] Based on this, the purpose of the present invention is to provide an anode foil corrosion equipment for aluminum electrolytic capacitors to solve the problem of material waste in the actual production startup stage of the existing anode foil corrosion equipment for aluminum electrolytic capacitors. The operator needs to manually pull out the aluminum foil and fix it on the winding mechanism before starting the electrolysis process. This part of the pulled aluminum foil does not meet the performance standards of the finished product because it has not undergone the electrolysis process and becomes waste. This situation frequently occurs during the start-up preparation in large-scale continuous production, resulting in material loss accumulating over time, increasing costs and reducing production efficiency. Technical problems.

[0006] To achieve the above object, the present invention provides the following technical solution: an etching device for anode foil for aluminum electrolytic capacitors, comprising a main body and an aluminum foil roll, wherein both ends of the main body are fixed with support frames, and two groups of the support frames are rotatably connected with an unwinding mechanism and a rewinding mechanism respectively;

[0007] The unwinding mechanism and the rewinding mechanism both include a reel, an unwinding clamp and a rewinding clamp are respectively provided at one end of the two groups of reels, connecting mechanisms are fixed on both sides of the unwinding clamp and the rewinding clamp, the connecting mechanisms include a connecting frame, a connecting rod and a sliding ball, guide rails are fixed on both side walls inside the main body, the two groups of connecting rods are fixed on both sides of the connecting frame, the sliding balls fixed at the ends of the connecting rods are along the inside of the guide rails and slidably connected thereto, and support rods are fixed on both sides of the tops of the two groups of support frames;

[0008] The connecting mechanism also includes an elastic clamping plate, a spring and a latch plate, wherein the elastic clamping plate and the connecting frame are elastically slidably connected via the spring, the latch plate is fixed to one end of the connecting frame, and a latch hole matching the latch plate is provided inside the engaging head;

[0009] Rack guide rails are arranged on both sides above the main body between the two groups of support rods, and walking mechanisms are arranged on the two groups of rack guide rails, and the walking mechanism includes a sliding frame, a linear motor, a telescopic driving rod and a clamping head, and the linear motor is installed inside the sliding frame and matched with the rack guide rails, the telescopic driving rod is fixed at the bottom of the sliding frame, and the clamping head fixed at the bottom of the telescopic driving rod is matched with the connecting frame;

[0010] An anode contact plate in contact with the aluminum foil roll is arranged on one side of the unwinding fixture, wherein a power rod located on one side above the main body is fixed between the two groups of support rods, and a conductive slider is slidably connected inside the power rod, and a conductive slide groove matching the conductive slider is provided inside the power rod, the conductive slider and the anode contact plate are electrically connected through a spiral wire, and the end of the spiral wire and the anode contact plate are connected through a wire quick connector;

[0011] A hollow frame is fixed at the bottom of the main body, and a cathode metal plate is fixed at the top of the hollow frame. The cathode metal plate and one side of the energizing rod are electrically connected to the anode conductive frame and the cathode conductive frame respectively, and a socket is opened on one side of the anode conductive frame and the cathode conductive frame;

[0012] The walking mechanism also includes a limiting pulley, and limiting guide rails are fixed between the two ends of the two groups of support rods, and the number of limiting guide rails is two groups and they are located on both sides above the main body, and a slide groove matching the limiting pulley is opened inside the limiting guide rail;

[0013] A pressing mechanism is provided at the middle position above the main body, and the pressing mechanism is fixedly connected to the external frame, and the pressing mechanism includes an electric push rod and a pressing wheel, and the pressing wheel presses the aluminum foil down into the electrolyte in the main body for electrolytic corrosion under the action of the electric push rod;

[0014] Control boxes are fixed at the bottom of both ends of the main body, and drive motors are installed inside the two sets of control boxes. The output ends of the two sets of drive motors are respectively connected to a set of transmission shafts of the unwinding mechanism and the winding mechanism through a transmission belt.

[0015] By adopting the above technical scheme, the two ends of the aluminum foil roll are fixedly connected to the unwinding clamp and the winding clamp respectively, and under the cooperation of the walking mechanism and the connecting mechanism, the walking mechanism drives the winding clamp to move through the connecting mechanism. Since the sliding ball of the connecting mechanism and the guide rail are slidably connected, and the cross-section of the guide rail is concave, when the winding clamp drives the aluminum foil to move, it cooperates with the trajectory of the guide rail, and can drive the front end of the aluminum foil along the guide rail into the electrolyte for electrolytic corrosion operation, thereby avoiding the problem that the part of the aluminum foil that is manually pulled out and fixed at the beginning of the existing electrolytic corrosion equipment is occupied in the equipment startup preparation link, does not contact the electrolyte throughout the whole process, does not go through the electrolysis process, and lacks the key corrosion treatment step, so that a roll of aluminum foil can meet the performance standards required for the anode foil finished product, avoid the problem of waste generation, reduce production costs, and increase production efficiency.

[0016] Furthermore, the unwinding mechanism and the winding mechanism both include a rotating shaft, a transmission shaft, a clamping plate, a fastening bolt and a clamp storage groove. The rotating shaft and the clamping plate fixed on both sides of the winding roller are detachably connected by fastening bolts, and the clamping plate and the transmission shaft are fixedly connected, and the transmission shaft and the support frame are rotatably connected. The clamp storage groove plays a storage and clamping role for the unwinding clamp and the winding clamp, and a second magnet is arranged inside the clamp storage groove, which is oppositely attracted to the first magnet on the end faces of the unwinding clamp and the winding clamp.

[0017] By adopting the above technical solution, when installing the aluminum foil, the aluminum foil is rolled onto the roller, and then the roller is fixed to the transmission shaft with fastening bolts through the rotating shaft and the clamping plate to ensure that the roller can rotate stably during the unwinding process.

[0018] Furthermore, locking mechanisms are provided on both sides of the unwinding clamp and the winding clamp, and the locking mechanisms include a locking bolt, a first bevel block and a second bevel block. The locking bolt is threadedly connected to the unwinding clamp and the winding clamp, and the end of the locking bolt is movably connected to the first bevel block. The second bevel block and the first bevel block are connected by an inclined sliding connection, and the top of the second bevel block plays a role in clamping and fixing the aluminum foil.

[0019] By adopting the above technical solution, after the end of the aluminum foil is inserted into the clamp, the locking bolt is tightened to push the first inclined block to move, and the first inclined block drives the second inclined block to clamp the aluminum foil upward through the inclined sliding connection. During the unwinding process, as the winding roller rotates, the aluminum foil will not loosen under the clamping action of the locking mechanism, ensuring a stable unwinding process.

[0020] Furthermore, a liquid inlet pipe and a liquid outlet pipe connected to the interior of the main body are respectively arranged at diagonal positions on one side of the main body, and the horizontal height of the liquid inlet pipe is higher than the horizontal height of the liquid outlet pipe.

[0021] By adopting the above technical solution, the electrolyte can be injected into the main body from the liquid inlet pipe through external power equipment such as a pump, and then discharged from the liquid outlet pipe to achieve the circulation of the electrolyte. In the equipment preparation stage, the pump body is started, and the electrolyte enters the main body from the liquid inlet pipe under pressure to fill the internal space. During the electrolytic corrosion process, the continuous circulation flow keeps the electrolyte at a uniform concentration and temperature, promptly removes impurities and heat generated during the electrolysis process, maintains the stability of the electrolyte performance, and ensures the consistency of the corrosion effect.

[0022] In summary, the present invention mainly has the following beneficial effects: the present invention fixes and connects the two ends of the aluminum foil roll to the unwinding clamp and the winding clamp respectively, and under the cooperation of the walking mechanism and the connecting mechanism, the walking mechanism drives the winding clamp to move through the connecting mechanism. Since the sliding ball of the connecting mechanism and the guide rail are slidably connected, and the cross-section of the guide rail is concave, when the winding clamp drives the aluminum foil to move, it cooperates with the trajectory of the guide rail, and can drive the front end of the aluminum foil along the guide rail into the electrolyte for electrolytic corrosion operation, thereby avoiding the problem that the part of the aluminum foil that is manually pulled out and fixed at the beginning of the existing electrolytic corrosion equipment is occupied in the equipment startup preparation link, does not contact the electrolyte throughout the whole process, does not undergo the electrolysis process, and lacks the key corrosion treatment step, so that a roll of aluminum foil can meet the performance standards required for the anode foil finished product, avoids the problem of waste generation, reduces production costs, and increases production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the first viewing angle of the present invention as a whole;

[0024] Figure 2 For the present invention Figure 1 A magnified image of point A;

[0025] Figure 3 is a side sectional view of the present invention;

[0026] Figure 4 For the present invention Figure 3 The enlarged view of point B;

[0027] Figure 5 A second viewing angle schematic diagram of the present invention as a whole;

[0028] Figure 6 It is a front cross-sectional view of the present invention;

[0029] Figure 7 For the present invention Figure 6 Enlarged view of point C;

[0030] Figure 8 It is a schematic diagram of the internal structure of the present invention;

[0031] Fig. 9 It is a partially cutaway enlarged view of the first part of the present invention;

[0032] Fig.10 It is a partially cutaway enlarged view of the second part of the present invention;

[0033] Fig.11 It is a partially cutaway enlarged view of the third part of the present invention;

[0034] Fig.12 It is a partial cutaway enlarged view of the fourth part of the present invention;

[0035] Fig.13 It is a partially cutaway enlarged view of the unwinding mechanism of the present invention.

[0036] In the figure: 1, main body; 2, support frame; 3, unwinding mechanism; 301, winding roller; 302, rotating shaft; 303, transmission shaft; 304, clamping plate; 305, fastening bolt; 306, clamp storage groove; 4, rewinding mechanism; 5, unwinding clamp; 6, rewinding clamp; 7, locking mechanism; 701, locking bolt; 702, first inclined block; 703, second inclined block; 8, connecting mechanism; 801, connecting frame; 802, elastic clamping plate; 803, spring; 804, latch plate; 805, connecting rod; 806, sliding ball; 9, walking mechanism; 901, sliding frame; 902, Linear motor; 903, telescopic driving rod; 904, locking head; 905, limiting pulley; 10, guide rail; 11, aluminum foil roll; 12, support rod; 13, rack guide rail; 14, power rod; 15, anode contact plate; 16, wire quick connector; 17, conductive slider; 18, spiral wire; 19, limiting guide rail; 20, conductive slide; 21, anode conductive frame; 22, jack; 23, pressing mechanism; 24, hollow frame; 25, cathode metal plate; 26, cathode conductive frame; 27, driving motor; 28, transmission belt; 29, control box; 30, liquid inlet pipe; 31, liquid outlet pipe. DETAILED DESCRIPTION

[0037] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0038] The following describes an embodiment of the present invention based on its overall structure.

[0039] Embodiment 1

[0040] An etching device for anode foil of aluminum electrolytic capacitors, such as Figure 1-13 As shown, it includes a main body 1;

[0041] The main body 1 is the core of the equipment, which contains electrolyte and related components. Support frames 2 are fixed at both ends. The support frames 2 are made of high-strength steel and have a reasonable structural design. They provide stable support for components such as the unwinding mechanism 3 and the rewinding mechanism 4 to ensure that the equipment will not shake or move during operation, which will affect the corrosion quality of the anode foil. When the equipment is running, the support frame 2 bears the weight of the unwinding mechanism 3, the rewinding mechanism 4 and the aluminum foil, and evenly transmits these forces to the ground to ensure the stability of the entire equipment.

[0042] The unwinding mechanism 3 and the rewinding mechanism 4 are similar in structure and have key functions, and both include a reel 301, a rotating shaft 302, a transmission shaft 303, a clamping plate 304, a fastening bolt 305, and a clamp receiving groove 306. The reel 301 is used to wind the aluminum foil roll 11, and its surface is specially treated to ensure that the aluminum foil is tightly wound and not easily scratched;

[0043] When installing the aluminum foil, the aluminum foil roll 11 is put on the roll 301, and then the roll 301 is fixed on the transmission shaft 303 through the rotating shaft 302 and the clamping plate 304 with the fastening bolts 305, ensuring that the roll 301 can rotate stably during the unwinding process, and the transmission shaft 303 is rotatably connected with the support frame 2, so that the unwinding and rewinding process is smooth, reducing energy loss and mechanical wear;

[0044] The clamp storage groove 306 can not only store the unwinding clamp 5 and the winding clamp 6, but also the second magnet inside and the first magnet on the end surface of the clamp are attracted by opposite polarities, which can fix the position of the clamp at a specific moment. For example, after the winding clamp 6 completes the winding action, the adsorption force of the magnet can stabilize it in the clamp storage groove 306 to prevent accidental movement.

[0045] The locking mechanism 7 arranged on both sides of the unwinding clamp 5 and the winding clamp 6 is the key to ensure the fixation of the aluminum foil. The locking mechanism 7 includes a locking bolt 701, a first inclined block 702 and a second inclined block 703. When the end of the aluminum foil is inserted into the clamp, the locking bolt 701 is tightened to push the first inclined block 702 to move. The first inclined block 702 drives the second inclined block 703 to clamp the aluminum foil upward through the inclined sliding connection. During the unwinding process, as the winding roller 301 rotates, the aluminum foil will not loosen under the clamping action of the locking mechanism 7, ensuring the stability of the unwinding process.

[0046] The anode contact plate 15 on one side of the unwinding fixture 5 is in close contact with the aluminum foil after the aluminum foil is locked, and is connected to the power rod 14 through the wire quick connector 16, the spiral wire 18 and the conductive slider 17 to achieve current conduction. When the device is powered on, the current is conducted from the power rod 14 through the conductive slider 17, the spiral wire 18, the wire quick connector 16 to the anode contact plate 15, and then to the aluminum foil, so that the aluminum foil can be electrolytically corroded in the electrolyte;

[0047] The connecting mechanism 8 includes a connecting frame 801, an elastic clamping plate 802, a spring 803, a latch plate 804, a connecting rod 805 and a sliding ball 806, and its function is to connect the clamp and the walking mechanism 9 and guide the clamp to move on the guide track 10;

[0048] Before the equipment is operated, the latch plate 804 of the connecting mechanism 8 is inserted into the engaging head 904 of the traveling mechanism 9. The elastic clamping plate 802 clamps the engaging head 904 under the action of the spring 803 to ensure a firm connection. When the traveling mechanism 9 moves, the connecting frame 801 and the connecting rod 805 drive the connecting mechanism 8 to move as a whole. The sliding ball 806 slides in the guide track 10 to provide a stable guide for the movement of the clamp, so that the clamp can accurately bring the aluminum foil into or out of the electrolyte.

[0049] The walking mechanism 9 includes a sliding frame 901, a linear motor 902, a telescopic driving rod 903, a clamping head 904 and a limiting pulley 905. The linear motor 902 cooperates with the rack guide 13 to drive the walking mechanism 9 to move between the support rods 12.

[0050] After the linear motor 902 is started, it moves precisely on the rack guide rail 13 according to the preset program, driving the entire walking mechanism 9 and the clamp connected thereto to move, and the telescopic driving rod 903 can passively adjust the height of the engaging head 904 under the action of the guide rail 10;

[0051] The limiting pulley 905 cooperates with the limiting guide rail 19 to ensure that the traveling mechanism 9 moves smoothly without deviation. During the movement of the traveling mechanism 9, the limiting pulley 905 rolls in the slide groove of the limiting guide rail 19 to limit its freedom in the horizontal direction and ensure the accuracy of the moving direction;

[0052] The cathode metal plate 25 is fixedly installed at the bottom of the body 1 through a hollow frame 24, and the cathode metal plate 25 is connected to the cathode conductive frame 26, and is electrically connected to the cathode of the external power supply through the jack 22. The power rod 14 is located above the body 1, and is electrically connected to the anode conductive frame 21, and conducts the current to the aluminum foil through the conductive slider 17 and the spiral wire 18;

[0053] During the electrolytic corrosion process, the current of the external power supply is conducted to the power rod 14 through the anode conductive frame 21, and then transmitted to the aluminum foil through the conductive slider 17, the spiral wire 18, etc. At the same time, the cathode metal plate 25 is connected to the cathode of the external power supply through the cathode conductive frame 26, so that an electric field is formed in the electrolyte. The aluminum foil acts as an anode and undergoes an electrolytic corrosion reaction under the action of the electric field. The position and structure of the cathode metal plate 25 and the power rod 14 are reasonably designed to ensure the formation of a uniform and stable electric field in the electrolyte, so that all parts of the aluminum foil are evenly corroded, thereby improving the quality of the anode foil.

[0054] A liquid inlet pipe 30 and a liquid outlet pipe 31 are respectively arranged at diagonal positions on one side of the main body 1. The liquid inlet pipe 30 is higher than the liquid outlet pipe 31. Through external power equipment such as a pump, the electrolyte can be injected into the main body 1 from the liquid inlet pipe 30 and then discharged from the liquid outlet pipe 31 to achieve the circulation of the electrolyte. In the equipment preparation stage, the pump body is started, and the electrolyte enters the main body 1 from the liquid inlet pipe 30 under pressure to fill the internal space. During the electrolytic corrosion process, the continuous circulation flow keeps the electrolyte at a uniform concentration and temperature, and promptly removes impurities and heat generated during the electrolytic process, maintains the stability of the electrolyte performance, and ensures the consistency of the corrosion effect;

[0055] like Figure 3As shown, the pressing mechanism 23 is located in the middle position above the main body 1 and is fixedly connected to the external frame, including an electric push rod and a lower pressing wheel. The electric push rod can accurately control the lifting and lowering of the lower pressing wheel. When the electrolytic corrosion of the front end of the aluminum foil is completed, the electric push rod pushes the lower pressing wheel to press the subsequent part of the aluminum foil into the electrolyte. According to the corrosion progress of the aluminum foil in the electrolyte, the electric push rod starts after receiving the control signal, and accurately adjusts the position of the lower pressing wheel so that the aluminum foil is completely immersed in the electrolyte to ensure that the electrolytic corrosion is fully carried out. The pressing mechanism 23 can also be manually controlled. During equipment debugging or special circumstances, the operator can manually operate the electric push rod according to actual needs to adjust the height of the lower pressing wheel to meet different production needs;

[0056] When the last part of the aluminum foil enters the electrolyte for electrolytic corrosion, the pressing mechanism 23 is reset to avoid interference with the unwinding clamp 5;

[0057] The driving motors 27 are installed in the control boxes 29 at the bottom of both ends of the main body 1, and the output ends of the two sets of driving motors 27 are respectively connected to one set of transmission shafts 303 of the unwinding mechanism 3 and the winding mechanism 4 through the transmission belts 28;

[0058] The drive motor 27 is independently controlled by the controller. When the equipment is running, the controller sends instructions to the drive motor 27 according to the preset production parameters. The drive motor 27 starts and drives the drive shaft 303 to rotate through the transmission belt 28, thereby realizing the unwinding action of the unwinding mechanism 3 and the winding action of the winding mechanism 4. The unwinding and winding speeds can be accurately adjusted according to production requirements to ensure that the residence time and movement speed of the aluminum foil in the electrolyte are appropriate, thereby realizing stable and continuous production.

[0059] The working principle of the present invention is as follows: when in use, the power is turned on, wherein the reels 301 of the unwinding mechanism 3 and the rewinding mechanism 4 and the two sets of support frames 2 are rotatably connected via the rotating shaft 302, and one set of the rotating shafts 302 of the unwinding mechanism 3 and the rewinding mechanism 4 is transmission-connected to the driving motor 27 via the transmission belt 28, and then the two sets of driving motors 27 can respectively unwind and rewind the unwinding mechanism 3 and the rewinding mechanism 4, wherein the two sets of driving motors 27 are independently controlled by the controller;

[0060] Furthermore, the fastening bolts 305 are disassembled to separate the engaging plates 304 of the rotating shaft 302 and the transmission shaft 303 from each other, and then the reel 301 of the unwinding mechanism 3 and the rewinding mechanism 4 can be disassembled, so as to facilitate the installation and removal of the aluminum foil roll 11 before and after corrosion;

[0061] Before the etching process, the aluminum foil needs to be wound and rolled up by the roller 301 of the unwinding mechanism 3. When the roller 301 of the unwinding mechanism 3 is winding the aluminum foil into a roll, the end of the aluminum foil is first inserted into the unwinding clamp 5, and then the end of the aluminum foil is locked and clamped by the locking mechanisms 7 at both ends of the unwinding clamp 5, so that the aluminum foil forms an aluminum foil roll 11 outside the roller 301 of the unwinding mechanism 3;

[0062] At this time, under the action of the fastening bolt 305, the reel 301 with the aluminum foil roll 11 is installed, and the staff manually inserts the other end of the aluminum foil roll 11 into the winding clamp 6, and the aluminum foil end is also locked and fixed by the locking mechanism 7;

[0063] The main body 1 is filled with electrolyte, which is injected into the main body 1 through the liquid inlet pipe 30 by an external power device, and then discharged out of the main body 1 through the liquid outlet pipe 31. Under the action of an external pump body, the electrolyte circulates inside the main body 1, thereby ensuring the uniformity of the electrolyte and improving the corrosion effect on the aluminum foil.

[0064] A cathode metal plate 25 is fixedly installed at the bottom of the main body 1 through a hollow frame 24, wherein the cathode metal plate 25 is electrically connected to the cathode of the external power supply through the cathode conductive frame 26 and the socket 22, wherein a power-on rod 14 is fixedly arranged above the main body 1, and the power-on rod 14 is electrically connected to the anode conductive frame 21, and under the action of the socket 22, the anode of the external power supply is electrically connected to the anode conductive frame 21 and the power-on rod 14. In general, the positive and negative connectors of the external power supply are respectively inserted into the two groups of sockets 22 to realize the current loop of the power supply;

[0065] Specifically, an anode contact plate 15 is provided on one side of the unwinding clamp 5. When the locking mechanism 7 locks the aluminum foil, the anode contact plate 15 and the aluminum foil are in contact with each other, and then the anode contact plate 15 is connected by the wire quick connector 16, the spiral wire 18 and the conductive slider 17 in sequence. At this time, the conductive slider 17 is located inside the conductive slide groove 20 inside the power rod 14. At this time, the conductive slider 17 is connected to the external power anode, that is, at this time, the external power anode current is transmitted to the aluminum foil, and then when the aluminum foil contacts the electrolyte, the cathode metal plate 25 and the electrolyte cooperate to corrode the aluminum foil, so that a microscopic porous structure is formed on the surface of the aluminum foil to meet the capacitor performance requirements;

[0066] At this time, under the action of the two sets of walking mechanisms 9, the walking mechanism 9 drives the winding fixture 6 to move through the connecting mechanism 8. Since the sliding ball 806 of the connecting mechanism 8 and the guide track 10 are in sliding connection, and the cross section of the guide track 10 is concave, when the winding fixture 6 drives the aluminum foil to move, it cooperates with the track of the guide track 10, and can drive the front end of the aluminum foil along the guide track 10 into the electrolyte to perform electrolytic corrosion operation;

[0067] As the walking mechanism 9 moves from one end to the position of the winding mechanism 4, the winding clamp 6 enters the clamp storage groove 306 inside the winding mechanism 4 under the action of the guide rail 10. At this time, the end face of the winding clamp 6 and the magnet inside the winding mechanism 4 are adsorbed and fixed. At this time, the adsorption force of the magnet is greater than the clamping force of the spring 803 and the elastic clamping plate 802 on the clamping head 904;

[0068] Then the two groups of walking mechanisms 9 move in opposite directions, so that the engaging head 904 of the walking mechanism 9 is separated from the connecting mechanism 8 of the winding clamp 6, that is, the engaging head 904 overcomes the clamping force of the elastic clamping plate 802 to separate, and then the winding mechanism 4 rotates synchronously under the action of the driving motor 27 to perform the winding operation on the aluminum foil, avoiding the problem of interference;

[0069] Then, the winding mechanism 4 drives the winding fixture 6 to rotate, so that the aluminum foil after electrolysis can be wound up, and at this time, the two sets of walking mechanisms 9 stop running;

[0070] When the electrolytic corrosion of the front end of the aluminum foil is completed, with the winding action of the winding mechanism 4, the subsequent part of the aluminum foil gradually enters the electrolyte under the action of the external downward pressure device to undergo electrolytic corrosion;

[0071] Specifically, the pressing mechanism 23 is located above the main body 1, wherein the subsequent part of the aluminum foil is pressed down by an electric push rod, and the subsequent part of the aluminum foil is pressed into the electrolyte for electrolytic corrosion, wherein the pressing device can also be manually controlled to ensure that the aluminum foil can be completely immersed in the electrolyte;

[0072] When a roll of aluminum foil is in the final stage of electrolysis, under the reeling force of the reeling mechanism 4 on the aluminum foil, the unwinding fixture 5 is driven by the aluminum foil to separate from the unwinding mechanism 3. At this time, the unwinding fixture 5 enters the electrolyte along the guide track 10 under the cooperation of the sliding ball 806 of the connecting mechanism 8 and the guide track 10, so that the unwinding fixture 5 gradually moves to the position of the rewinding mechanism 4, and then completes the entire electrolytic corrosion operation of the roll of aluminum foil;

[0073] Furthermore, when the unwinding fixture 5 is electrolytically corroded along with the last part of the aluminum foil, the unwinding fixture 5 also drives the wire quick connector 16 to move. Since the wire quick connector 16 and the conductive slider 17 are electrically connected via the spiral wire 18, that is, when the spiral wire 18 is passively extended along with the telescopic driving rod 903, under the action of the spiral wire 18, the spiral wire 18 can drag the conductive slider 17 to a certain extent, thereby making the conductive slider 17 slide inside the energized rod 14, which will not affect the problem of the current of the external power anode being transmitted to the aluminum foil.

[0074] As can be seen from the above, the problem that the part of aluminum foil that is manually pulled out and fixed at the beginning of the existing electrolytic corrosion equipment is occupied in the equipment startup preparation link, does not contact the electrolyte throughout the whole process, does not go through the electrolysis process, and lacks the key corrosion treatment step is avoided, so that a roll of aluminum foil can fully meet the performance standards required for the finished anode foil, avoid the problem of waste generation, reduce production costs, and increase production efficiency;

[0075] When the electrolytic corrosion of a roll of aluminum foil is completed, the staff can open the locking mechanism 7 of the unwinding clamp 5 and the winding clamp 6, and loosen the locking bolt 701 of the locking mechanism 7 by using a tool, so that the unwinding clamp 5 and the winding clamp 6 can be separated from the clamping of the aluminum foil. Then, the staff can loosen the fastening bolt 305 to disassemble the winding mechanism 4 of the aluminum foil that has been wound and electrolytically corroded, so as to facilitate further processing operations of subsequent equipment;

[0076] When it is necessary to perform electrolytic corrosion operation on a new roll of aluminum foil again, the locking head 904 of the walking mechanism 9 is locked and connected with the connecting mechanism 8 on one side of the unwinding clamp 5, so that the walking mechanism 9 drives the unwinding clamp 5 to move in the opposite direction, driving the front end of the new roll of aluminum foil to perform electrolytic corrosion operation, and the subsequent overall electrolytic corrosion operation process is consistent, and the operation is more convenient.

[0077] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. An anode foil etching device for aluminum electrolytic capacitors, comprising a main body (1) and an aluminum foil roll (11), characterized in that: Support frames (2) are fixed at both ends of the main body (1), and two sets of support frames (2) are rotatably connected inside with an unwinding mechanism (3) and a rewinding mechanism (4); The unwinding mechanism (3) and the rewinding mechanism (4) both include a reel (301), and an unwinding clamp (5) and a rewinding clamp (6) are respectively provided at one end of the two sets of reels (301). Both sides of the unwinding clamp (5) and the rewinding clamp (6) are fixed with a connecting mechanism (8), and the connecting mechanism (8) includes a connecting frame (801), a connecting rod (805) and a sliding ball (806). Both side walls inside the main body (1) are fixed with guide rails (10 ), two groups of connecting rods (805) are fixed on both sides of the connecting frame (801), sliding balls (806) fixed at the ends of the connecting rods (805) are slidably connected to the inside of the guide track (10), support rods (12) are fixed on both sides of the top of the two groups of support frames (2), rack guide rails (13) are arranged between the two groups of support rods (12) and are located on both sides above the main body (1), and walking mechanisms (9) are arranged on the two groups of rack guide rails (13); The walking mechanism (9) comprises a sliding frame (901), a linear motor (902), a telescopic driving rod (903) and a snap-fit ​​head (904), wherein the linear motor (902) is installed inside the sliding frame (901) and cooperates with the rack guide rail (13), the telescopic driving rod (903) is fixed at the bottom of the sliding frame (901), and the snap-fit ​​head (904) fixed at the bottom of the telescopic driving rod (903) cooperates with the connecting frame (801).

2. The etching equipment for anode foil for aluminum electrolytic capacitor according to claim 1, characterized in that: An anode contact plate (15) in contact with the aluminum foil roll (11) is arranged on one side of the unwinding clamp (5), wherein a power rod (14) located on one side above the main body (1) is fixed between the two groups of support rods (12), and a conductive slider (17) is slidably connected inside the power rod (14), and a conductive slide groove (20) matching with the conductive slider (17) is opened inside the power rod (14), the conductive slider (17) and the anode contact plate (15) are electrically connected through a spiral wire (18), and the end of the spiral wire (18) and the anode contact plate (15) are connected through a wire quick connector (16).

3. The etching equipment for anode foil for aluminum electrolytic capacitor according to claim 2, characterized in that: A hollow frame (24) is fixed at the bottom end of the main body (1), and a cathode metal plate (25) is fixed at the top of the hollow frame (24); the cathode metal plate (25) and one side of the energizing rod (14) are electrically connected to an anode conductive frame (21) and a cathode conductive frame (26), respectively; and a plug hole (22) is provided on one side of the inside of the anode conductive frame (21) and the cathode conductive frame (26).

4. The etching equipment for anode foil for aluminum electrolytic capacitor according to claim 1, characterized in that: The unwinding mechanism (3) and the rewinding mechanism (4) both comprise a rotating shaft (302), a transmission shaft (303), a clamping plate (304), a fastening bolt (305) and a clamp receiving groove (306); the rotating shaft (302) and the clamping plate (304) fixed on both sides of the reel (301) are detachably connected via the fastening bolts (305); the clamping plate (304) and the transmission shaft (303) are fixedly connected; and the transmission shaft (303) and the support frame (2) are rotatably connected; the clamp receiving groove (306) serves to receive and engage the unwinding clamp (5) and the rewinding clamp (6); and a second magnet is arranged inside the clamp receiving groove (306) and is attracted to the first magnet on the end faces of the unwinding clamp (5) and the rewinding clamp (6) by an opposite polarity.

5. The etching equipment for anode foil for aluminum electrolytic capacitor according to claim 1, characterized in that: The unwinding clamp (5) and the winding clamp (6) are both provided with locking mechanisms (7) on both sides thereof, and the locking mechanisms (7) include a locking bolt (701), a first inclined block (702) and a second inclined block (703); the locking bolt (701) and the unwinding clamp (5) and the winding clamp (6) are threadedly connected, and the end of the locking bolt (701) is movably connected to the first inclined block (702); the second inclined block (703) and the first inclined block (702) are connected in an inclined sliding manner, and the top of the second inclined block (703) plays a role in clamping and fixing the aluminum foil.

6. The etching equipment for anode foil for aluminum electrolytic capacitor according to claim 1, characterized in that: The connecting mechanism (8) further comprises an elastic clamping plate (802), a spring (803) and a latch plate (804); the elastic clamping plate (802) and the connecting frame (801) are elastically slidably connected via the spring (803); the latch plate (804) is fixed to one end of the connecting frame (801); and a latch hole matching the latch plate (804) is provided inside the engaging head (904).

7. The etching equipment for anode foil for aluminum electrolytic capacitor according to claim 1, characterized in that: The walking mechanism (9) further comprises a limiting pulley (905), and limiting guide rails (19) are fixed between the two ends of the two groups of support rods (12). The limiting guide rails (19) are in two groups and are located on both sides above the main body (1). A sliding groove matching the limiting pulley (905) is provided inside the limiting guide rails (19).

8. The etching equipment for anode foil for aluminum electrolytic capacitor according to claim 1, characterized in that: A pressing mechanism (23) is provided at a middle position above the main body (1), and the pressing mechanism (23) is fixedly connected to an external frame. The pressing mechanism (23) comprises an electric push rod and a pressing wheel, and the pressing wheel presses the aluminum foil down into the electrolyte in the main body (1) for electrolytic corrosion under the action of the electric push rod.

9. The etching equipment for anode foil for aluminum electrolytic capacitor according to claim 1, characterized in that: Control boxes (29) are fixed at the bottom of both ends of the main body (1), and drive motors (27) are installed inside the two sets of control boxes (29). The output ends of the two sets of drive motors (27) are respectively connected to a set of transmission shafts (303) of the unwinding mechanism (3) and the rewinding mechanism (4) through a transmission belt (28).

10. The etching equipment for anode foil for aluminum electrolytic capacitor according to claim 1, characterized in that: A liquid inlet pipe (30) and a liquid outlet pipe (31) connected to the interior of the main body (1) are respectively arranged at diagonal positions on one side of the main body (1), and the level of the liquid inlet pipe (30) is higher than the level of the liquid outlet pipe (31).

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