Copper wire pretreatment device

Abstract

The utility model discloses a copper wire pretreatment device, and relates to the technical field of copper wire machining, the copper wire pretreatment device comprises a base body and an inner container, the base body is provided with a containing cavity with an opening in the upper end, and the containing cavity is used for containing a pickling solution; the inner container is provided with an upper end and a lower end which are opposite to each other, the inner container is arranged on the base main body, the lower end of the inner container extends into the accommodating cavity from the opening, the interior of the inner container is communicated with the accommodating cavity, the upper end of the inner container is provided with a fixing piece for fixing a copper wire to be processed, and the lower end of the inner container is provided with a clamping piece. A copper wire to be treated extends from the upper end of the inner container to the lower end of the inner container and is in contact with the pickling solution in the accommodating cavity. Through the arrangement of the inner container, a to-be-treated copper wire can be conveniently placed in the base body containing a pickling solution, pickling treatment of the to-be-treated copper wire is achieved, the to-be-treated copper wire subjected to pickling treatment can be conveniently taken away from the base body, the risk that an operator makes contact with the pickling solution is effectively reduced, and operation safety is improved.

Description

Technical Field

[0001] This application relates to the field of copper wire processing technology, and in particular to a copper wire pretreatment device. Background Technology

[0002] Current acid pickling processes for enameled copper wire typically involve immersing the wire in a specific acid pickling solution to remove oxides and other impurities from its surface, thus pre-treating the wire and facilitating subsequent processing or direct use. However, current pre-treatment methods generally involve directly placing the copper wire to be treated into a container filled with acid pickling solution, which poses operational risks due to the difficulty in handling the wire. Utility Model Content

[0003] The main purpose of this application is to propose a copper wire pretreatment device, which aims to solve the problem of copper wire being difficult to handle.

[0004] To achieve the above objectives, this application proposes a copper wire pretreatment apparatus, comprising:

[0005] The base body has an open upper cavity for holding pickling solution;

[0006] The inner liner has an upper end and a lower end, and is disposed on the base body. The lower end of the inner liner extends into the receiving cavity from the opening. The interior of the inner liner communicates with the receiving cavity. The upper end of the inner liner is provided with a fixing member for fixing the copper wire to be treated, so that the copper wire to be treated extends from the upper end to the lower end of the inner liner and contacts the pickling solution in the receiving cavity.

[0007] In one embodiment, the inner liner includes an annular inner liner body, with openings at both the upper and lower ends of the inner liner body.

[0008] In one embodiment, the inner liner further includes an edge connecting portion, which is disposed at an opening at the upper end of the inner liner body and is attached to the upper opening of the base body.

[0009] In one embodiment, the edge connection is configured as an annular connection surrounding the inner liner body, the outer diameter of the edge connection being larger than the inner diameter of the upper opening of the receiving cavity.

[0010] In one embodiment, the fixing member includes a winding post for winding the copper wire to be processed.

[0011] In one embodiment, there are multiple winding posts, which are spaced apart at the upper end of the inner liner.

[0012] In one embodiment, the copper wire pretreatment device further includes a first connector, which is disposed at the lower end of the inner liner and adheres the inner liner and the copper wire to be treated.

[0013] In one embodiment, the copper wire pretreatment device further includes a second connector disposed at the lower end of the inner liner, and a limiting groove for restricting the copper wire to be treated is formed between the second connector and the lower end of the inner liner.

[0014] In one embodiment, the base body is provided with a transparent viewing window.

[0015] In one embodiment, the transparent window is provided with a liquid level line.

[0016] The copper wire to be treated is fixed to the inner liner by a fastener located at the upper end of the inner liner. The copper wire to be treated extends from the upper end of the inner liner to the lower end. The inner liner is located on the base body. The lower end of the inner liner extends into the receiving cavity from the opening. The inside of the inner liner is connected to the receiving cavity so that the copper wire to be treated comes into contact with the pickling solution in the receiving cavity and pickling treatment is achieved on the downwardly extending copper wire. The operation is simple and easy to implement, which can reduce operation time and improve production efficiency.

[0017] The pickling solution contained in the base body can be adjusted according to different production needs to be suitable for processing copper wires of different specifications and materials.

[0018] The inner liner design facilitates the handling of copper wires to be processed, effectively reducing the risk of operators coming into contact with pickling solution and improving operational safety.

[0019] The inner liner and the base body, which are used to fix the copper wire to be processed, are set up separately. The inner liner and the base body can be cleaned or repaired and replaced directly and independently, which is convenient for daily maintenance and cleaning.

[0020] A fixing component is installed at the upper end of the inner tank to fix the copper wire to be treated. By fixing it with the fixing component, the pickling length of the copper wire to be treated is controlled, avoiding direct contact between the copper wire and the base body, which would cause the pickling solution to rise along the contact surface between the copper wire and the base body. This effectively controls the pickling length of the copper wire to be treated and facilitates the subsequent processing and use of the copper wire. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1A simplified structural diagram of an embodiment of the copper wire pretreatment apparatus provided in this application.

[0023] Explanation of icon numbers:

[0024] 100. Base body; 101. Opening; 102. Receiving cavity; 110. Liquid level line;

[0025] 200. Inner liner; 210. Inner liner body; 220. Annular connecting part; 230. First connecting piece;

[0026] 300. Fasteners;

[0027] 400. Copper wire to be processed.

[0028] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0030] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0031] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0032] In applications such as battery manufacturing and other electronic equipment, electronic equipment component manufacturing, light industrial production, wire drawing processes, and copper alloy processing, copper wire needs to be acid-washed to remove oxide layers and contaminants from its surface to facilitate subsequent production and processing.

[0033] Taking lithium-plated copper wire in battery manufacturing as an example, lithium-plated copper wire serves as the reference electrode in a three-electrode system, playing a crucial role in evaluating battery performance and analyzing electrochemical behavior. This configuration allows researchers to more accurately monitor and analyze the internal electrochemical behavior of the battery, especially potential changes during charging and discharging. The three-electrode system allows for independent measurement of potential changes at the working electrode (typically the positive or negative electrode of the battery), unaffected by current, thus improving experimental accuracy. Furthermore, the three-electrode system can aid in the analysis of various aspects and processes within complex electrochemical systems, such as monitoring electrode potentials, separate analysis of electrochemical impedance spectroscopy at the positive and negative electrodes, analysis of interfacial reactions between the electrode and electrolyte, and battery failure analysis. These studies are essential for optimizing battery design and improving battery performance and safety. Research using the three-electrode system also provides a better understanding of the internal electrochemical reactions of the battery, offering a scientific basis for improving battery technology and developing novel battery materials. When processing enameled copper wire, a portion of the wire needs to undergo pretreatment to remove the enamel layer, exposing the copper wire. Subsequently, the exposed portion of the copper wire is immersed in the electrolyte and lithium-plated inside the battery to form a stable reference electrode. During battery assembly, it is crucial to ensure the exposed copper wire is positioned between the positive and negative electrodes, while the remaining enameled wire extends to the outside of the battery and connects to the battery casing via nickel tabs. This allows for precise monitoring of the battery's internal electrochemical behavior and avoids electrical signal interference. This method improves the accuracy of voltage monitoring and facilitates research into the battery's charge-discharge characteristics and lifespan degradation mechanisms.

[0034] Currently, the pretreatment of enameled copper wire mainly includes two methods: physical and chemical. Physical methods generally employ mechanical stripping, specifically using tools such as scrapers, sandpaper, and milling machines to remove the surface coating through scraping, grinding, and cutting. Physical methods are simple and easy to implement, but inefficient and may damage the wire. Chemical methods utilize chemical solvents, such as organic solvents and chemical corrosives, to dissolve, corrode, and decompose the enamel layer through soaking or spraying, thereby achieving the purpose of removing the enamel. Chemical methods have good enamel removal effects, but due to the corrosive nature of chemical solvents, they require more precise operation.

[0035] In specific process flows, chemical methods typically involve immersing the copper wire 400 to be treated in a specific pickling solution, which may include sulfuric acid, hydrochloric acid, phosphoric acid, etc., to remove oxides and other impurities from the surface of the copper wire. After pickling, the copper wire 400 needs to be thoroughly cleaned to remove residual acid and salts generated in the reaction, facilitating subsequent processing or direct use. Considering the corrosiveness of chemical solvents such as pickling solutions, operational safety must be taken into account during the pickling process, including the use of appropriate protective equipment and ensuring good ventilation. Furthermore, the selection of the pickling solution and the post-treatment cleaning are crucial for ensuring the quality of the copper wire and avoiding environmental pollution. In some cases, post-pickling surface treatments, such as passivation, may also need to be considered to improve the corrosion resistance of the copper wire.

[0036] Current chemical treatments for copper wire 400 typically involve directly placing the wire in a container of pickling solution for pickling. This lack of a dedicated pre-treatment device for the copper wire 400 presents challenges during pre-treatment, including difficulty in handling the wire. Furthermore, the corrosive nature of the pickling solution poses safety concerns. Additionally, when the wire is placed directly in the container, the pickling solution rises along the contact surface between the wire and the container wall, making it difficult to effectively control the pickling length of the copper wire 400. To address the difficulties in handling the copper wire 400, the resulting safety issues, and the inability to effectively control the pickling length, the following measures are proposed: Figure 1 This application proposes a copper wire pretreatment device.

[0037] The copper wire pretreatment device includes a base body 100 and an inner liner 200. The base body 100 has a receiving cavity 102 with an upper opening 101 for holding pickling solution. The inner liner 200 has opposing upper and lower ends, and is disposed on the base body 100. The lower end of the inner liner 200 extends from the opening 101 into the receiving cavity 102.

[0038] The base body 100 serves as the basic structure of this pretreatment device, housing the inner liner 200 and the pickling solution. The overall structure must be robust and durable to ensure the stability and safety of the entire pretreatment device during the pickling process. The inner liner 200, mounted on the base body 100, secures the copper wire 400 to be treated and ensures that the wire 400 can extend into the receiving cavity 102 and contact the pickling solution. The pickling solution refers to the strong acid required for the pickling process, as well as liquids such as water and ethanol added later to adjust the pH value.

[0039] The inner liner 200 communicates with the receiving cavity 102. A fixing member 300 for fixing the copper wire 400 to be treated is provided at the upper end of the inner liner 200, allowing the copper wire 400 to extend from the upper end to the lower end of the inner liner 200 and contact the pickling solution in the receiving cavity 102. The communication between the inner liner 200 and the receiving cavity 102 can be achieved, but is not limited to, having grooves communicating with the receiving cavity 102 formed on the periphery and / or bottom of the inner liner 200; or the inner liner 200 can be configured as a hollow cylinder; however, this is not limited to these specific designations.

[0040] The inner liner 200 has an upper and a lower end along its height direction D. The copper wire 400 to be treated is fixed to the inner liner 200 by a fixing member 300 located at the upper end of the inner liner 200, and extends from the upper end to the lower end of the inner liner 200. When the lower end of the inner liner 200 extends into the receiving cavity 102 through the opening 101, the copper wire 400 to be treated enters the receiving cavity and comes into contact with the pickling solution, thereby achieving pickling treatment. The overall operation is simple and easy to implement, effectively improving production efficiency and reducing operation time.

[0041] Generally, the diameter of the copper wire used as a three-electrode is 40-50 micrometers. Compared with physical methods such as mechanical stripping, chemical methods can reduce damage to the copper wire. By precisely controlling the pickling parameters, such as the temperature, concentration, and treatment time of the pickling solution, the consistency and quality of the surface treatment of the copper wire 400 can be ensured. By adjusting the pickling solution held in the base body 100 according to different production needs, it can be adapted to treat copper wires 400 of different specifications and materials, and further reduce damage to the copper wire during the pickling process.

[0042] The inner liner 200 allows for easy placement of the copper wire 400 to be treated into the base body 100 containing the pickling solution, facilitating pickling of the copper wire 400. It also allows for easy removal of the treated copper wire 400 from the base body 100 after pickling, effectively reducing the risk of operator contact with the pickling solution and improving operational safety. The inner liner 200 and the base body 100, used to secure the copper wire 400, are separate components, allowing for direct and independent cleaning of both. Furthermore, they can be easily replaced if either the inner liner 200 or the base body 100 malfunctions, simplifying daily maintenance and cleaning.

[0043] A fixing member 300 is provided at the upper end of the inner liner 200 to fix the copper wire 400 to be treated. By controlling the length of the copper wire 400 to be treated fixed to the fixing member 300, the length of contact between the copper wire 400 to be treated and the pickling solution can be controlled, and the pickling length of the copper wire 400 to be treated can be further controlled. It is also used to avoid direct contact between the copper wire and the base body 100, and to prevent the pickling solution from rising along the contact surface between the copper wire 400 to be treated and the base body 100. This effectively controls the pickling length and facilitates the subsequent processing and use of the copper wire.

[0044] Considering the chemical properties of the pickling solution, the inner liner 200 and the base body 100 can be optionally made of materials such as glass, stainless steel, or titanium alloy.

[0045] Reference Figure 1 In one embodiment, the inner liner 200 includes an inner liner body 210 arranged in a ring shape, with openings at both the upper and lower ends of the inner liner body 210.

[0046] The inner liner body 210 is ring-shaped, and can be, but is not limited to, circular ring, square ring, or racetrack ring; the inner liner body 210 can be a one-piece structure or a combined structure composed of multiple arc plates, straight plates, etc.; the specific design can be determined according to actual needs, and is not limited here.

[0047] Designing the inner tank 200 in a ring shape allows the pickling solution to circulate and distribute evenly within the tank, ensuring sufficient contact between the copper wire 400 and the pickling solution and improving the pickling effect. The ring shape also reduces space requirements and allows for the fixing of more copper wires within a limited space, improving pretreatment efficiency. Furthermore, the ring design of the inner tank 200 reduces the number of bends, allowing for easy removal of residues through simple cleaning and soaking, effectively reducing cleaning time and maintenance costs. Controlling the pickling concentration and temperature during the pickling process ensures uniform heating of the copper wire 400 and effectively reduces potential surface defects after treatment.

[0048] It should be noted that, in the embodiments of this application, the copper wire 400 to be treated extends from the upper end to the lower end of the inner liner 200 through the space in the middle of the inner liner 200 and comes into contact with the pickling solution in the receiving cavity 102; the copper wire 400 to be treated extending into the middle of the inner liner 200 can be fixed to the lower end of the inner liner 200 or a position near the lower end of the inner liner 200 by means of bonding, snapping or fixing. In some other alternative embodiments, the copper wire 400 to be treated can also be arranged to extend into the pickling solution through the gap formed between the inner liner 200 and the cavity wall of the receiving cavity 102, and the copper wire 400 to be treated extending into the gap can be fixed to the lower end of the inner liner 200, a position near the lower end of the inner liner 200 or fixed to the base body 100 by means of bonding, snapping or fixing.

[0049] Reference Figure 1 In one embodiment, the inner liner 200 further includes an edge connecting portion, which is disposed at the opening at the upper end of the inner liner body 210 and is attached to the upper opening 101 of the base body 100.

[0050] The edge connection part serves as a mechanical structure connecting the inner liner 200 and the base body 100, allowing the inner liner 200 to be fixed in the corresponding position on the base body 100. The edge connection part facilitates the placement and removal of the inner liner 200 and the copper wire 400 to be treated fixed in the inner liner, effectively reducing the risk of operators coming into contact with pickling solution and improving operational safety.

[0051] Reference Figure 1 In one embodiment, the edge connection portion is configured as an annular connection portion 220 surrounding the inner liner body 210, and the outer diameter of the edge connection portion is larger than the inner diameter of the upper opening of the receiving cavity 102.

[0052] Designing the edge connection portion as an annular connection portion 220 surrounding the inner liner body 210 improves the overall mechanical strength and rigidity of the inner liner 200, making the connection between the inner liner 200 and the base body 100 more stable. It also effectively reduces the impact of external vibrations or other impacts on the pickling process, ensuring its stability and safety. The annular connection portion 220 not only further reduces the space occupied by the inner liner 200 but also facilitates the removal or placement of the inner liner 200 into the base body 100, improving operational safety.

[0053] In addition to the aforementioned annular connecting part 220, the edge connecting part may also be, but is not limited to, a hook, spring clip, U-shaped buckle or other snap-fit ​​structure, and specifically, a slot, notch or the like is provided in the upper opening 101 of the base body 100 to facilitate the snap-fit ​​and fixation of such snap-fit ​​structures.

[0054] In addition, when the edge connection part is set as an annular connection part 220, the aforementioned snap-fit ​​structure can also be set on the outer peripheral wall of the inner liner 200. There are multiple snap-fit ​​structures, which are spaced apart between the upper and lower ends of the inner liner 200. In the hanging state, the inner liner 200 is suspended inside the base body 100. When the inner liner 200 is hung on the upper opening 101 of the base body 100 through snap-fit ​​structures at different positions, the hanging height of the inner liner 200 is different, which is used to further help control the pickling length of the copper wire 400 to be treated.

[0055] Reference Figure 1 In one embodiment, the fixing member 300 includes a winding post for winding the copper wire 400 to be treated. When the copper wire required for the preparation of the three electrodes is relatively long, winding a portion of the copper wire 400 to be treated onto the winding post can control the length of the copper wire 400 in contact with the pickling solution, and further control the pickling length of the copper wire 400. Compared with other fixing methods, fixing the copper wire 400 to be treated by the winding post can effectively prevent the copper wire from being broken or damaged during the pickling process.

[0056] Furthermore, there are multiple winding posts, spaced apart at the upper end of the inner liner 200. By adjusting the length of different copper wires 400 wound on different winding posts, multiple copper wires 400 can be processed simultaneously, achieving rapid processing of the copper wires 400, effectively improving production efficiency and reducing manual operation time. This also reduces pickling solution consumption and material loss due to breakage or damage to the copper wires 400, saving production costs by reducing energy consumption and labor costs.

[0057] In addition to the aforementioned winding post, the fixing component 300 can also be, but is not limited to, double-sided adhesive, tape, etc., to bond the copper wire 400 to be treated to the upper end of the inner liner 200; or, the fixing component 300 can be a spring clip, buckle, winding pin, limiting groove, or other connecting component that can achieve the function of limiting and fixing, to fix the copper wire 400 to be treated to the upper end of the inner liner 200 by snap-fit ​​or other means; or, the fixing component 300 can be any other fixing component 300 for fixing the copper wire 400 to be treated, such as hook-type fixing component 300, magnetic fixing component 300, limiting clip, bolt, etc.; the specific setting can be determined according to the actual situation, and is not limited here.

[0058] Optionally, the winding post is provided at the aforementioned edge connection portion; or, the winding post is provided on the peripheral wall of the aforementioned inner liner body 210. When the winding post is provided on the outer peripheral wall of the inner liner body 210, at least one winding post provided at the upper end of the inner liner 200 can also be used as the aforementioned edge connection portion without providing other edge connection portions. The specific location of the winding post can be determined according to the actual location, and is not limited here.

[0059] To further prevent direct contact between the copper wire 400 and the base body 100, which could cause the pickling solution to rise along the contact surface between the copper wire 400 and the base body 100 and result in uncontrollable pickling length of the copper wire 400, the copper wire pretreatment device also includes one or more of a first connector 230 and a second connector, which are located at the lower end of the inner liner 200. The connectors fix the portion of the copper wire 400 extending towards the lower end of the inner liner 200 to the inner liner 200, preventing this portion from contacting the base body 100.

[0060] Reference Figure 1In one embodiment, a first connector 230 is disposed at the lower end of the inner liner 200 and adheres to the inner liner 200 and the copper wire 400 to be treated. The first connector 230 can be, but is not limited to, double-sided tape, adhesive tape, or other connectors capable of adhesion. When the copper wire 400 extends from the upper end to the lower end of the inner liner 200, the portion of the copper wire 400 extending to the lower end of the inner liner 200 is adhered to the lower end of the inner liner 200 by adhesive bonding. The first connector 230 can flexibly adjust the connection between the copper wire 400 and the inner liner 200, and is suitable for processing copper wires 400 of different specifications, materials, and with different requirements for pickling length.

[0061] In another embodiment, a limiting groove is formed between the second connector (not shown) and the lower end of the inner liner 200 to limit the copper wire 400 to be processed.

[0062] The second connector can be, but is not limited to, a winding post, spring clip, buckle, winding nail, limiting groove, or other connector that can achieve a limiting and fixing function; alternatively, the second connector can also be any other connector for fixing the copper wire 400 to be treated, such as a hook-type fixing member 300, a magnetic fixing member 300, a limiting clamp, or a bolt. When the copper wire 400 to be treated extends from the upper end to the lower end of the inner liner 200, the portion of the copper wire 400 extending to the lower end of the inner liner 200 is fixed to the lower end of the inner liner 200 by the second connector, preventing the copper wire 400 from shifting position. The second connector can achieve a stable connection of the copper wire 400 to be treated, effectively preventing the copper wire 400 from shifting position during the pickling process and affecting the control of the pickling length of the copper wire 400.

[0063] In the embodiments of this application, the aforementioned first connector 230 and second connector can be used individually or in combination. The copper wire 400 to be treated extends downward from the middle space of the inner liner 200 and contacts the pickling solution in the receiving cavity 102; the copper wire 400 to be treated extending into the middle of the inner liner 200 can be fixed to the lower end of the inner liner 200 or a position near the lower end of the inner liner 200 by means of bonding, snap-fit, etc. In some other alternative embodiments, the copper wire 400 to be treated can also be arranged to extend into the pickling solution through the gap formed between the inner liner 200 and the cavity wall of the receiving cavity 102; the copper wire 400 to be treated extending into the gap can be fixed to the lower end of the inner liner 200, a position near the lower end of the inner liner 200, or the base body 100 by means of bonding, snap-fit, etc. Specifically, connectors can be provided on the inner and / or outer sides of the annular inner liner body 210 to connect the copper wire 400 to be treated; this is not limited here.

[0064] Reference Figure 1In one embodiment, the base body 100 is provided with a transparent window. The transparent window allows the level of the pickling solution inside the base body 100 to be clearly seen, which helps to control the level and facilitates timely replenishment of the pickling solution.

[0065] Furthermore, the transparent window is equipped with a liquid level line 110. The liquid level line 110 allows for a more intuitive display of the pickling solution level in the base body 100, which helps in adjusting the pickling solution level and the pickling length of the copper wire 400 to be treated, thereby improving operational flexibility.

[0066] Depending on the actual use, it is possible that the base body 100 is designed entirely of acid-resistant transparent materials such as glass, with all or part of the sidewalls of the base body 100 serving as transparent windows, and the liquid level line 110 located on the sidewall of the base body 100. Alternatively, the base body 100 may be composed of a structure made of acid-resistant transparent material and a structure made of acid-resistant non-transparent material, with transparent windows corresponding to the portions made of acid-resistant transparent material, used to display the liquid level of the pickling solution inside the base body 100. Depending on the actual use, there may be one or more transparent windows, with the scale line located on one or more of the transparent windows.

[0067] Reference Figure 1 The specific implementation of the copper wire pretreatment device of this application is as follows:

[0068] The copper wire pretreatment device includes a base body 100 and an inner liner 200. The base body 100 has a receiving cavity 102 with an upper opening 101 for holding pickling solution. The inner liner 200 has opposing upper and lower ends and is disposed on the base body 100. The lower end of the inner liner 200 can extend into the receiving cavity 102 through the opening 101. The inner liner 200 includes an annular inner liner body 210, with openings at both the upper and lower ends. The annular inner liner body 210 allows the interior of the inner liner 200 to communicate with the receiving cavity 102 when it is placed inside. The upper end of the inner liner 200 is provided with a winding post for fixing the copper wire 400 to be treated, so that the copper wire 400 to be treated can extend from the upper end to the lower end of the inner liner 200 and come into contact with the pickling solution in the receiving cavity 102. The inner liner 200 also includes an edge connecting portion, which is disposed at the opening at the upper end of the inner liner body 210 and configured to surround the inner liner body 210 with an annular connecting portion 220. The outer diameter of the annular connecting portion 220 is larger than the inner diameter of the opening at the upper end of the receiving cavity 102. There are multiple winding posts, which are spaced apart at the annular connecting portion 220 at the upper end of the inner liner 200.

[0069] The copper wire 400 to be treated is wound and fixed on the winding post. The copper wire 400 extends from the upper end to the lower end of the inner liner 200. The part of the copper wire 400 extending to the lower end of the inner liner 200 is bonded to the lower end of the inner liner 200 by means of adhesive, snap-fit ​​or other methods through connectors.

[0070] The base body 100 is made of glass or other corrosion-resistant materials, and a liquid level line 110 is provided on the side wall of the base body 100 to indicate the liquid level of the pickling solution. During the pickling process, the inner liner 200, which fixes the copper wire 400 to be treated, is placed into the receiving cavity 102 of the base body 100, and the inner liner 200 is hung on the upper opening 101 of the base body 100 through the annular connecting part 220.

[0071] Specifically, after adding the pickling solution, the inner liner 200 with the copper wire 400 to be treated fixed can be placed into the receiving cavity 102 of the base body 100; or, after placing the inner liner 200 with the copper wire 400 to be treated fixed into the receiving cavity 102 of the base body 100, the pickling solution can be added to the base body 100; the specific method can be adjusted according to the actual situation, and is not limited here.

[0072] The above description is merely an exemplary embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the technical concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A copper wire pretreatment device, characterized in that, include: The base body has an open upper cavity for holding pickling solution; The inner liner has an upper end and a lower end, and is disposed on the base body. The lower end of the inner liner extends into the receiving cavity from the opening. The interior of the inner liner communicates with the receiving cavity. The upper end of the inner liner is provided with a fixing member for fixing the copper wire to be treated, so that the copper wire to be treated extends from the upper end to the lower end of the inner liner and contacts the pickling solution in the receiving cavity.

2. The copper wire pretreatment device as described in claim 1, characterized in that, The inner liner includes an inner liner body arranged in a ring shape, with openings at both the upper and lower ends of the inner liner body.

3. The copper wire pretreatment device as described in claim 2, characterized in that, The inner liner also includes an edge connecting part, which is provided at the opening at the upper end of the inner liner body and is attached to the upper opening of the base body.

4. The copper wire pretreatment device as described in claim 3, characterized in that, The edge connecting portion is configured as an annular connecting portion surrounding the inner liner body, and the outer diameter of the edge connecting portion is larger than the inner diameter of the upper opening of the receiving cavity.

5. The copper wire pretreatment device as described in claim 1, characterized in that, The fixing component includes a winding post, which is used for winding the copper wire to be processed.

6. The copper wire pretreatment device as described in claim 5, characterized in that, There are multiple winding posts, which are spaced apart at the upper end of the inner liner.

7. The copper wire pretreatment device as described in claim 1, characterized in that, The copper wire pretreatment device further includes a first connector, which is disposed at the lower end of the inner liner and adheres the inner liner and the copper wire to be treated.

8. The copper wire pretreatment device as described in claim 1, characterized in that, The copper wire pretreatment device further includes a second connector, which is disposed at the lower end of the inner liner, and a limiting groove is formed between the second connector and the lower end of the inner liner to restrict the copper wire to be treated.

9. The copper wire pretreatment apparatus according to any one of claims 1-8, characterized in that, The base body has a transparent viewing window.

10. The copper wire pretreatment apparatus as described in claim 9, characterized in that, The transparent window is equipped with a liquid level line.

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