Continuous treatment equipment for copper wire drawing annealing cooling anti-oxygen passivation liquid

Abstract

This invention discloses a continuous treatment device for oxygen-resistant passivation liquid for cooling and annealing copper wire, belonging to the field of copper processing technology. The device includes a treatment tank, in which several interface adjustment rollers are sequentially arranged along the conveying direction of the copper wire within the tank's inner cavity. Guide grooves are formed on the outer walls of the interface adjustment rollers. The treatment tank stores passivation liquid, and the liquid level does not exceed the center of the interface adjustment rollers. This invention, through the design of a speed difference between the interface adjustment rollers, applies minute extension deformation to the copper wire within the treatment tank, thereby enabling the copper wire surface to continuously generate new metal surfaces, enhancing its chemical affinity with the passivation liquid. Simultaneously, the pressure and friction of the rollers on the copper wire mechanically process the newly formed initial passivation film, and simultaneously completes a small amount of drawing deformation, allowing the newly formed passivation film to extend synchronously with the substrate, forming a denser, crack-free film structure.

Description

Technical Field

[0001] This invention relates to the field of copper processing technology, and in particular to a continuous treatment equipment for an oxygen-resistant passivation liquid used for cooling and annealing copper wire drawing. Background Technology

[0002] In the passivation process after copper wire drawing, annealing and cooling, chemical passivation is often used in the industry to prevent oxidation and blackening of the copper conductor surface. This involves generating a dense passivation film on the copper wire surface to prevent oxidation.

[0003] However, existing equipment generally adopts a full immersion method, where the passivation equipment merely serves as a container for the passivation solution. It lacks a structural design adapted to the interfacial film formation and flow characteristics of the passivation solution, resulting in the inability to fully utilize the passivation solution's multiple functions of film formation, cleaning, lubrication, and oxygen protection. Furthermore, when the copper wire moves at high speed in the passivation solution, a fluid boundary layer with a thickness of tens to hundreds of micrometers naturally forms on its surface. In the full immersion mode, this fluid boundary layer severely hinders the contact between the effective components of the passivation solution and the copper substrate. The reaction stalls after the initial passivation film formation. Simultaneously, the multi-component system of the passivation solution is prone to uneven concentration and rapid loss of effective components, leading to extremely poor stability in the passivation treatment effect. The effective components in the passivation solution mainly rely on molecular diffusion to reach the copper wire surface through the boundary layer, resulting in extremely low reaction efficiency and difficulty in ensuring film density. Summary of the Invention

[0004] This invention provides a continuous treatment equipment for oxygen-resistant passivation liquid for cooling and annealing of copper wire drawing, which can solve the problem that the traditional treatment mode in the prior art relies entirely on chemical reactions in the liquid, resulting in poor passivation treatment effect.

[0005] This invention provides a continuous treatment device for oxygen-resistant passivation liquid for cooling and annealing of copper wire, including a treatment tank. A feeding mechanism and a discharging mechanism are respectively provided at both ends of the treatment tank. A plurality of interface adjustment rollers are arranged sequentially along the conveying direction of the copper wire in the inner cavity of the treatment tank. A guide groove is opened on the outer wall of the interface adjustment rollers. The inside of the treatment tank stores passivation liquid, and the liquid level of the passivation liquid does not exceed the center of the interface adjustment rollers.

[0006] As a further aspect of the present invention: the inner wall of the guide groove is provided with a number of equidistant protrusions; the protrusions on the interface adjustment rollers that are closer to the discharge mechanism are smaller.

[0007] As a further aspect of the present invention: several infusion units are fixedly installed on both sides of the inner wall of the treatment tank. Each infusion unit includes an infusion rack, a diversion plate is fixedly connected to one side of the infusion rack, several infusion ports are opened in the lower middle part of one side of the diversion plate, an infusion tube is fixedly connected to the bottom of the infusion rack, several diversion tubes are fixedly connected to one end of the infusion tube, and the several diversion tubes are respectively fixedly connected to several infusion ports. A temperature sensor and a liquid level sensor are fixedly installed on the top of one side of the diversion plate.

[0008] As a further aspect of the present invention: a flow-dispersing component is provided between each of the interface adjustment rollers. The flow-dispersing component includes a flow-dispersing hood, the bottom of which is fixedly connected to the bottom of the inner wall of the treatment tank. A central tube is fixedly connected to the middle of the flow-dispersing hood, and a flow-dispersing pipe is fixedly connected to one side of the central tube. A liquid pump is provided at one end of the flow-dispersing pipe, and the inlet of the liquid pump is connected to the inner cavity of the treatment tank.

[0009] As a further aspect of the present invention: a reflux port is provided at the top of the central tube, and a sampling cover is provided on the outer wall of the reflux port, with a sampling tube fixedly connected to one end of the sampling cover.

[0010] As a further aspect of the present invention, both ends of the spoiler are set as inclined surfaces.

[0011] As a further aspect of the present invention: the top of the processing tank is provided with a cover plate, and several positive pressure air vents are opened on both sides of the inner wall of the processing tank. The bottom of the several positive pressure air vents is respectively arranged corresponding to the top of several interface adjustment rollers. Air inlet hoods are fixedly connected to both sides of the outer wall of the processing tank. Two air inlet hoods are respectively used to send airflow into the positive pressure air vents on both sides. Air inlet pipes are fixedly connected to one side of each of the two air inlet hoods. One end of each of the two air inlet pipes is connected to the output end of an external air supply device. A feed inlet and a discharge outlet are respectively opened on the side of the processing tank near the feeding mechanism and the discharging mechanism. A flow guide is fixedly connected to the inner wall of the feed inlet and the discharge outlet. The inner wall of the flow guide is inclined and gradually narrows at the end of the flow guide away from the processing tank.

[0012] As a further aspect of the present invention: both ends of the inner wall of the processing tank are provided with wire assemblies, the wire assembly includes a wire frame, the bottom of the wire frame has a movable cavity, the inner wall of the movable cavity is slidably connected to a movable frame, a push spring is provided between the top of the movable frame and the inner wall of the movable cavity, and the bottom of the movable frame is rotatably connected to a wire pressing roller.

[0013] As a further aspect of the present invention: the feeding mechanism includes a feeding hood, a guide tube is fixedly connected to the inner wall of the feeding hood, a plurality of guide rollers are rotatably installed on the inner wall of the guide tube, a guide groove is provided in the middle of the guide rollers, and a friction plate is fixedly connected to the inner wall of the guide groove; one end of the guide tube is correspondingly arranged with one end of the feeding port.

[0014] As a further aspect of the present invention: a film removal assembly is provided between the guide tube and the feed inlet, the film removal assembly includes a film removal ring, the film removal ring is made of water-absorbing material, a liquid tank is provided inside the film removal ring, a plurality of ventilation holes are provided in the middle of the liquid tank, a plurality of extension grooves are provided between the plurality of ventilation holes, and a liquid pipe is fixedly connected to one side of the liquid tank.

[0015] As a further aspect of the present invention: the discharge mechanism includes a discharge conduit, and an upwardly inclined recovery pipe is fixedly connected to one end of the discharge conduit away from the processing tank. A heat dissipation sleeve is fixedly connected to the middle of the inner wall of the recovery pipe, and a plurality of heat dissipation fins are fixedly connected to the outer wall of the heat dissipation sleeve. A return pipe is fixedly connected to the bottom of the inner wall of the heat dissipation sleeve.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention, through the design of the rotational speed difference of the interface adjustment roller, applies a slight extension deformation to the copper wire in the processing tank, thereby enabling the copper wire surface to generate a continuously renewed new metal surface, enhancing its chemical affinity with the passivation solution; at the same time, the pressure and friction of the roller on the copper wire are used to mechanically process the newly formed initial passivation film, and simultaneously complete a small amount of drawing deformation; the newly formed passivation film extends synchronously with the substrate, forming a denser film layer structure without microcracks, thus improving the quality of the finished copper wire obtained by passivation treatment; This invention sets up a turbulence component between the interface adjustment rollers and uses a liquid pump to inject passivation liquid tangentially into the central tube to form a high-speed rotating flow. This causes the surface of the copper wire passing through the central tube to be subjected to shearing action, which not only significantly reduces the thickness of the fluid boundary layer on the surface of the copper wire, improving the film quality and reaction uniformity, but also simultaneously removes and washes away impurities such as oil and copper powder on the surface of the copper wire, avoiding the adhesion of impurities that affect the film quality, and enhancing the cleaning effect of the passivation process on the surface of the copper wire. This invention maintains a positive pressure environment in the processing tank by setting a positive pressure air vent at the corresponding position on the top of the interface adjustment roller and continuously supplying nitrogen. This not only effectively isolates oxygen to prevent oxidation of the high-temperature copper wire, but also controls the temperature of the tank environment and the copper wire body by adjusting the temperature of the nitrogen and the passivation liquid delivered by the liquid delivery unit. Gradual cooling of the copper wire is completed simultaneously during the passivation process, realizing an integrated design of anti-oxidation protection and process temperature control. Furthermore, by designing two flow guides, the airflow at both ends brought by the positive pressure environment is designed to remove the oxide film of the copper wire upon entry and to quickly dry the copper wire upon exit, achieving efficient removal of water stains on the surface of the copper wire and ensuring the cleanliness of the finished product surface. This invention designs a corresponding processing structure based on the core performance characteristics of the passivation solution, achieving compatibility between the passivation equipment and the passivation solution. This maximizes the multi-functionality of the passivation solution, including film formation, cleaning, lubrication, and oxygen protection. At the same time, the equipment structure enables temperature control and efficient utilization of the passivation solution, reducing its loss and ensuring the long-term stability of the passivation treatment effect. This effectively meets the industrial continuous production needs of continuous copper wire drawing and annealing. Attached Figure Description

[0017] Figure 1 This is a three-dimensional illustration of the present invention. Figure 1 ; Figure 2 This is a three-dimensional illustration of the present invention. Figure 2 ; Figure 3 This is a front cross-sectional view of the present invention; Figure 4 This is a cross-sectional view of the turbulence-disrupting component of the present invention. Figure 1 ; Figure 5 This is a cross-sectional view of the turbulence-disrupting component of the present invention. Figure 2 ; Figure 6 This is a cross-sectional schematic diagram of the conveying unit of the present invention; Figure 7 This is a cross-sectional schematic diagram of the feeding mechanism of the present invention; Figure 8 This is a schematic diagram of the membrane removal assembly of the present invention; Figure 9 This is a cross-sectional schematic diagram of the material discharge mechanism of the present invention.

[0018] Explanation of reference numerals in the attached figures: 101. Treatment tank; 102. Interface adjustment roller; 103. Flow turbulence assembly; 1031. Flow turbulence cover; 1032. Central tube; 1033. Tangential inlet; 1034. Backflow port; 1035. Sampling hood; 1036. Sampling tube; 1037. Flow turbulence tube; 1038. Liquid pump; 104. Discharge port; 105. Cover plate; 106. Infusion unit; 1061. Infusion rack; 1062. Diverter plate; 1063. Infusion port; 1064. Diverter tube; 1065. Infusion tube; 107. 108. Positive pressure air outlet; 109. Air inlet hood; 110. Feed inlet; 111. Flow guide hood; 112. Wire guide frame; 113. Movable frame; 114. Wire pressing roller; 201. Feed hood; 202. Guide tube; 203. Guide roller; 204. Film removal assembly; 2041. Film removal ring; 2042. Liquid tank; 2043. Ventilation hole; 2044. Extension groove; 2045. Liquid pipe; 301. Discharge guide tube; 302. Recovery pipe; 303. Heat dissipation sleeve; 304. Heat dissipation fin; 305. Return pipe. Detailed Implementation

[0019] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0020] like Figures 1 to 3 As shown in the embodiment of the present invention, a continuous treatment device for anti-oxidation passivation liquid for cooling copper wire drawing annealing is provided. The device includes a treatment tank 101, with a feeding mechanism and a discharging mechanism at both ends. A plurality of interface adjustment rollers 102 are sequentially arranged along the conveying direction of the copper wire within the inner cavity of the treatment tank 101. Guide grooves are formed on the outer wall of each interface adjustment roller 102. In traditional passivation treatment equipment, the formation of the passivation film on the surface of the copper wire depends entirely on the chemical reaction in the liquid. However, in this solution, after the copper wire enters the treatment tank 101, it sequentially passes around each interface adjustment roller 102. By designing the rotational speed difference of the interface adjustment rollers 102, the copper wire is subjected to an anti-oxidation passivation liquid within the treatment tank 101. By adding minute extension deformation, the surface of the copper wire can continuously generate new metal surfaces, enhancing the chemical affinity with the passivation solution. Simultaneously, the pressure and friction of the rollers on the copper wire mechanically process the newly formed initial passivation film, making it denser and oriented, and simultaneously completing a small amount of drawing deformation. This allows the newly formed passivation film to extend synchronously with the substrate, forming a denser film structure without microcracks. Furthermore, in the copper wire conveying process, the full-process rolling guide structure and the non-hard contact conveying guide design can effectively reduce mechanical damage to the copper wire during continuous processing, ensuring the integrity of the passivation film's anti-oxidation function while also taking into account the surface quality and mechanical properties of the finished copper wire.

[0021] The processing tank 101 contains passivation liquid, and the liquid level does not exceed the center of the interface adjustment roller 102. In this embodiment, only half of the passivation liquid is injected into the processing tank 101, so that half of the interface adjustment roller 102 is submerged below the liquid surface and the other half is exposed above the liquid surface. This allows the copper wire to repeatedly undergo a periodic alternation of submersion and removal from the liquid surface during continuous movement. The resulting technical effect is: Each time the copper wire moves from below the liquid to above the liquid, its surface forms a uniformly thick adhesive liquid film thanks to the surface tension of the liquid and its own movement, thus controlling the coating amount. Simultaneously, as the copper wire crosses the gas-liquid interface, the surface tension and shearing action at the interface, combined with the wetting properties of the passivation solution, automatically remove loose impurities and reaction byproducts from the copper wire surface, continuously providing a clean and fresh interface for the film-forming reaction. This allows the effective film-forming components of the passivation solution to remain in continuous contact with the copper substrate, avoiding the reaction stagnation problem after the initial formation of the passivation film in traditional processes, and fully utilizing the oxygen-resistant film-forming function of the passivation solution. When the liquid film adhering to the copper wire surface is in the above-liquid zone, the residual heat of the copper wire causes the liquid film to evaporate, spontaneously adsorbing solvent from the liquid near the copper wire surface. This promotes the removal of reaction products at the interface and the replenishment of fresh reactants, further enhancing the interface renewal efficiency.

[0022] In one embodiment, the inner wall of the guide groove is provided with a plurality of equidistantly arranged protrusions; the closer the interface adjustment roller 102 is to the discharge mechanism, the smaller the protrusions are, that is, the closer the interface adjustment roller 102 is to the discharge mechanism, the smoother the guide groove is; by providing protrusions in the guide groove, when the copper wire is pressed, a micro pressure with uneven distribution is formed on its surface, inducing the effective components in the passivation liquid to preferentially adsorb and orientedly arrange in the high-pressure zone; the varied arrangement of the protrusions makes the pressure between the interface adjustment roller 102 and the copper wire gradually decrease along the direction of the copper wire; the pressure between the first pair of interface adjustment rollers 102 and the copper wire is the greatest, and its main function is to force the passivation liquid into the surface of the high-temperature copper wire that has just come out of annealing, destroy the surface oxide layer and promote the reaction; the pressure between the subsequent interface adjustment rollers 102 and the copper wire decreases, which is used to smooth and shape the copper wire.

[0023] In one embodiment, to replenish and discharge the passivation liquid inside the treatment tank 101, this application fixes several liquid delivery units 106 on both sides of the inner wall of the treatment tank 101. Compared with the traditional single-point liquid delivery method, the distributed liquid delivery units 106 can improve the uniformity of material delivery, reduce the impact force during the delivery or discharge of the passivation liquid, and reduce the generation of bubbles. The specific structure of the delivery unit can be implemented using existing technology. In one embodiment, a specific structure of the liquid delivery unit 106 is provided; please refer to [reference needed]. Figure 6The infusion unit 106 includes an infusion rack 1061. A diversion plate 1062 is fixedly connected to one side of the infusion rack 1061. Several infusion ports 1063 are opened in the middle and lower part of one side of the diversion plate 1062. An infusion tube 1065 is fixedly connected to the bottom of the infusion rack 1061. In order to ensure that the amount of liquid delivered from each infusion port 1063 is more uniform, several diversion tubes 1064 are fixedly connected to one end of the infusion tube 1065. Several diversion tubes 1064 are fixedly connected to several infusion ports 1063 respectively. The other end of the infusion tube 1065 is connected to the passivation liquid supply equipment and the waste liquid discharge pipeline through a three-way regulating valve. In practical implementation, a filter is connected to one end of the waste liquid discharge pipeline. The filter is detachably installed on one side of the treatment tank 101 to remove dirt and copper powder and other impurities carried in the passivation liquid, thereby filtration and purification of the passivation liquid. The filtered passivation liquid is returned to the passivation liquid supply equipment and then fed back into the device for reuse, so as to achieve the effect of recycling, reducing costs and increasing efficiency. The filter itself can be disassembled for easy maintenance and replacement after a period of use.

[0024] A temperature sensor and a liquid level sensor are fixedly installed on the top of one side of the diversion plate 1062. The liquid level sensor detects whether there is too much or too little passivating liquid in the treatment tank 101. Then, the conveying unit cooperates to discharge or replenish the passivating liquid to ensure that the liquid level of the passivating liquid is stable. Similarly, the temperature sensor detects whether the temperature of the passivating liquid meets the requirements. Through different liquid delivery units 106, in conjunction with external temperature control equipment, the temperature of the delivered passivating liquid is controlled, thereby realizing the control and adjustment of the temperature of the passivating liquid in the treatment tank 101 to meet the passivation treatment requirements.

[0025] In one embodiment, see Figures 3 to 5A flow-dispersing assembly 103 is provided between several interface adjustment rollers 102. The flow-dispersing assembly 103 includes a flow-dispersing hood 1031. The bottom of the flow-dispersing hood 1031 is fixedly connected to the bottom of the inner wall of the treatment tank 101. A central tube 1032 is fixedly connected to the middle of the flow-dispersing hood 1031. A tangential water inlet 1033 is opened on one side of the central tube 1032. A flow-dispersing pipe 1037 is fixedly connected to one side of the tangential water inlet 1033. A liquid pump 1038 is provided at one end of the flow-dispersing pipe 1037. The water inlet of the liquid pump 1038 is connected to the inner cavity of the treatment tank 101. In the traditional passivation process, when the copper wire moves at high speed, a fluid boundary layer is formed on its surface, which can be tens to hundreds of micrometers thick. The liquid flow in the boundary layer is slow, and the effective components in the passivation liquid mainly rely on molecular diffusion. The passivation solution penetrates the boundary layer to reach the copper wire surface. In other words, the mass exchange between the passivation solution and the copper wire surface is limited by the thickness of the hydrodynamic boundary layer. The swirling shear structure of the turbulence component 103 in this device precisely adapts to the flow characteristics and cleaning and dispersing properties of the passivation solution. Through the central tube 1032 and the turbulence tube 1037, a high-speed rotating flow is formed. The copper wire passes through the central tube 1032, and the surrounding high-speed rotating liquid generates a strong shearing effect on the copper wire surface, allowing the cleaning and dispersing agents and film-forming active ingredients in the passivation solution to quickly reach the copper wire surface. This fully utilizes the cleaning and impurity removal function of the passivation solution, efficiently removing oil stains and copper powder impurities from the copper wire surface. Simultaneously, the relative flow velocity on the copper wire surface is significantly increased, which also reduces the boundary layer thickness, thereby improving its mass transfer efficiency and enhancing the film quality and uniformity of the copper wire.

[0026] In one embodiment, in order to sample the passivation liquid in the sampling tank so as to monitor and control the concentration and temperature of the passivation liquid, a return port 1034 is provided at the top of the central tube 1032. A sampling cover 1035 is provided on the outer wall of the return port 1034. A sampling tube 1036 is fixedly connected to one end of the sampling cover 1035. In order to reduce the obstruction of the flow of the passivation liquid by the turbulence cover 1031, both ends of the turbulence cover 1031 are set as slopes.

[0027] In one embodiment, see Figures 2 to 3The top of the treatment tank 101 is provided with a cover plate 105. Several positive pressure air inlets 107 are provided on both sides of the inner wall of the treatment tank 101. The bottom of each positive pressure air inlet 107 corresponds to the top of a number of interface adjustment rollers 102. Air inlet hoods 108 are fixedly connected to both sides of the outer wall of the treatment tank 101. Two air inlet hoods 108 are used to supply airflow to the positive pressure air inlets 107 on both sides. An air inlet pipe is fixedly connected to one side of each of the two air inlet hoods 108, and one end of each air inlet pipe is connected to the output end of an external air supply device. The air supplied by this air supply device is either filtered air with oxygen removed or nitrogen gas, thereby reducing air pollution. For the oxidation of the copper wire surface, this application maintains positive pressure inside the treatment tank 101 by supplying nitrogen gas into the treatment tank 101, reducing the entry of oxygen. At the same time, the temperature inside the treatment tank 101 is controlled and regulated by controlling the temperature of the supplied nitrogen gas. Furthermore, by aligning the bottom of the positive pressure air vent 107 with the top of the interface adjustment roller 102, the solvent evaporation rate of the liquid film attached to the copper wire surface is regulated by the temperature-controlled airflow after the copper wire leaves the liquid surface. This allows the effective film-forming components in the passivation solution to form directional enrichment on the copper wire surface, promoting the uniform shaping of the passivation film and avoiding problems such as pinholes and uneven film formation caused by abnormal solvent evaporation.

[0028] In one embodiment, see Figure 3 and Figure 7 The processing tank 101 has an inlet 109 and an outlet 104 on the side near the feeding mechanism and the discharging mechanism, respectively. A guide shroud 110 is fixedly connected to the inner wall of both the inlet 109 and the outlet 104. The inner wall of the guide shroud 110 is inclined, and the end of the guide shroud 110 away from the processing tank 101 gradually narrows. The diameter of the narrower end of the guide shroud 110 is larger than the diameter of the copper wire, thus avoiding direct frictional contact with the copper wire, while simultaneously meeting the need for exhaust and air supply through the guide shroud 110. Furthermore, because this application utilizes the processing tank 1... A plurality of positive pressure air inlets 107 are arranged along the length of the 01, allowing air to enter simultaneously, while exhaust is achieved only through smaller feed inlets 109 and discharge outlets 104 on both sides. This results in extremely high airflow velocity after the airflow guide shrouds 110 inside the feed inlets 109 and discharge outlets 104. This allows the high-speed airflow from the feed inlets 109 to simultaneously cool the copper wire during the feeding process. Simultaneously, the airflow helps to pre-remove debris and impurities adhering to the copper wire, preventing contamination of the passivation solution. During the discharge stage after the copper wire has undergone passivation, a guide shroud 110 with a narrow, inclined inner wall is provided inside the discharge outlet 104 of the processing tank 101. When the airflow from the processing tank 101 exits through the discharge outlet 104, it is guided and constrained by the guide shroud 110 and converges on the surface of the copper wire, effectively purging and removing residual passivation solution from the surface of the copper wire. Furthermore, in specific implementation, an annular air knife drying assembly can be added at the discharge port 104. The specific structure of the annular air knife drying assembly is implemented with reference to existing technical means. It works in synergy with the bundled blowing of the guide shroud 110 to form a uniform blowing air curtain around the copper wire when the copper wire is sent out of the discharge port 104. This removes free water stains, residual passivation liquid film, copper powder and other impurities attached to the surface, achieving deep drying of the copper wire and ensuring its surface cleanliness. This avoids the defects caused by surface water stains, patches and passivation liquid residue due to incomplete drying in traditional processes. At the same time, this application adopts a pure airflow non-contact drying design, avoiding the mechanical damage such as scratches and deformation on the surface of the copper wire caused by direct contact between mechanical structures and the copper wire in the traditional drying process, thus improving the quality of the finished copper wire.

[0029] In one embodiment, in order to guide and correct the direction of the copper wire entering the processing tank 101, wire assemblies are provided at both ends of the inner wall of the processing tank 101. The wire assembly includes a wire frame 111, a movable cavity is opened at the bottom of the wire frame 111, a movable frame 112 is slidably connected to the inner wall of the movable cavity, a push spring is provided between the top of the movable frame 112 and the inner wall of the movable cavity, and a wire pressing roller 113 is rotatably connected to the bottom of the movable frame 112.

[0030] In one embodiment, the feeding mechanism includes a feeding hood 201, with a guide tube 202 fixedly connected to the inner wall of the feeding hood 201. A plurality of guide rollers 203 are rotatably mounted on the inner wall of the guide tube 202. A guide groove is provided in the middle of the guide rollers 203. Through the cooperation of the guide rollers 203 and the guide groove, the copper wire is stably connected. One end of the guide tube 202 is correspondingly set to one end of the feeding port 109. To prevent the copper wire from sliding and shifting, a friction plate is fixedly connected to the inner wall of the guide groove.

[0031] In one embodiment, see Figures 7 to 8Before entering the processing equipment, the copper wire has already reacted with oxygen in the air at a certain temperature to form an oxide film. To avoid the impact of this oxide film on the passivation process, this application provides a film removal assembly 204 between the guide tube 202 and the feed inlet 109. The film removal assembly 204 includes a film removal ring 2041. The central part of the film removal ring 2041 is made of absorbent material, which is a water-absorbing sponge sheet in this embodiment. The edges of the film removal ring 2041 are made of engineering plastic to maintain the basic shape stability of the film removal ring 2041. A liquid tank 2042 is provided inside the film removal ring 2041, and several... A ventilation hole 2043 is provided, and several extension grooves 2044 are provided between the ventilation holes 2043. A liquid pipe 2045 is fixedly connected to one side of the liquid tank 2042. The film remover is slowly fed into the inner side of the film removal ring 2041 through the liquid pipe 2045. Through the conduction of the adsorption effect of the water-absorbing material, the film remover is evenly distributed and wets the film removal ring 2041. The airflow sent out by the guide shroud 110, after passing through the ventilation holes 2043 and extension grooves 2044, will carry a small amount of film remover and adhere to the copper wire. This achieves the purpose of removing the oxide film, reduces the consumption of the film remover, and avoids the impact of excessive film remover adhesion on the subsequent passivation treatment.

[0032] In one embodiment, see Figure 3 and Figure 9 By setting the guide shroud 110 inside the discharge port 104, the delivered airflow is constrained and concentrated in the direction of adhering to the surface of the copper wire, which greatly improves the drying efficiency of the copper wire. Furthermore, in order to recover the passivation liquid adhering to the surface of the copper wire, the discharge mechanism includes a discharge conduit 301. The end of the discharge conduit 301 away from the processing tank 101 is fixedly connected to an upwardly inclined recovery pipe 302. A heat dissipation sleeve 303 is fixedly connected to the middle of the inner wall of the recovery pipe 302. Several heat dissipation fins 304 are fixedly connected to the outer wall of the heat dissipation sleeve 303. A return pipe 305 is fixedly connected to the bottom of the inner wall of the heat dissipation sleeve 303. Through the cooperation of the heat dissipation sleeve 303 and the heat dissipation fins 304, the passivation liquid vapor in the delivered airflow can be condensed and adhered to the inner side of the heat dissipation sleeve 303, and dripped down under the action of gravity and recovered through the return pipe 305, so as to avoid excessive passivation liquid components being discharged into the air, which would cause pollution of the working environment.

[0033] When the present invention is used, the copper wire first enters the guide tube 202 through the feeding mechanism, and after being stably guided by the guide roller 203, it passes through the inner cavity of the film removal ring 2041, and then passes through the inside of the guide cover in the feed port 109 into the processing tank 101. During the process of the copper wire passing through the guide shroud, the film removal agent is fed into the film removal ring 2041 through the liquid material pipe 2045 to wet the film removal ring 2041. The wetted film removal agent is evenly distributed under the adsorption of the water-absorbing material. With the airflow delivered by the guide shroud 110 passing through the vent and the extension groove 2044, a small amount of film removal agent is carried to the surface of the copper wire, thereby removing the initial oxide film formed after high-temperature annealing and avoiding excessive residue of film removal agent. After the copper wire enters the processing tank 101 through the feed inlet 109, it first passes over the wire pressing roller 113, then sequentially passes over the central tube 1032 of each interface adjusting roller 102 and the turbulence assembly 103, and is then discharged through the discharge inlet 104 and the discharge pipe at the other end. Several liquid delivery units 106 are fixedly installed on both sides of the inner wall of the processing tank 101. During operation, the liquid delivery pipe 1065 is connected to the passivation liquid supply equipment through a three-way regulating valve. After the passivation liquid is diverted by the diversion pipe 1064, it is evenly fed into the processing tank 101 from several liquid delivery ports 1063 on the diversion plate 1062. Half a tank of passivation liquid is added to the processing tank 101 for passivation operation. First, as the copper wire passes through the interface adjustment rollers 102, the interface adjustment rollers 102 apply a slight extension deformation to the copper wire through the speed difference design; at the same time, the protrusions in the guide groove form an unevenly distributed micro pressure on the surface of the copper wire, inducing the effective components in the passivation solution to be preferentially adsorbed in the high-pressure zone; along the direction of the copper wire, the pressure between the interface adjustment rollers 102 and the copper wire gradually decreases. When the copper wire passes through the central tube 1032, the liquid pump 1038 pumps the passivation liquid in the treatment tank 101 into the turbulence tube 1037. The port of the turbulence tube 1037 is tangential to the central tube 1032, so that the passivation liquid injected into the central tube 1032 forms a high-speed rotating flow, which generates a shearing effect on the surface of the copper wire, reduces its boundary layer thickness, thereby improving its mass transfer efficiency and improving the film quality and uniformity of the copper wire. During the process, nitrogen gas is supplied by an external air supply device through the air inlet pipe into the air inlet hood 108, and then into the treatment tank 101 through the positive pressure air outlet 107. The tank is kept under a slight positive pressure and the temperature is regulated. The gas is then discharged through the two guide hoods 110 on both sides. At the same time, the air supply method of the positive pressure air outlet 107 facing the interface adjustment roller 102 is also conducive to the drying of the copper wire after it leaves the liquid surface, evaporating the solvent in the liquid film on its surface, so that the relative concentration of the effective components that are difficult to evaporate in the liquid film increases in the micro-layer on the surface of the copper wire, forming enrichment conditions that are conducive to subsequent reactions. When the copper wire leaves the processing tank 101 through the discharge port 104, the guide shroud 110 inside the discharge port 104 directs the airflow towards the surface of the copper wire to achieve rapid drying of the copper wire. The copper wire then enters the discharge conduit 301, one end of which is connected to the upwardly inclined recovery pipe 302. The passivation liquid vapor in the airflow condenses at the heat dissipation sleeve 303, adheres to the inside of the heat dissipation sleeve 303 and drips off under gravity, and is recovered through the return pipe 305.

[0034] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A continuous treatment equipment for anti-oxidation passivation liquid for cooling and annealing copper wire drawing, characterized in that, The system includes a processing tank (101), with a feeding mechanism and a discharging mechanism at both ends. Several interface adjustment rollers (102) are arranged sequentially in the inner cavity of the processing tank (101) along the conveying direction of the copper wire. A guide groove is provided on the outer wall of the interface adjustment rollers (102). The processing tank (101) contains passivation liquid, and the liquid level of the passivation liquid does not exceed the center of the interface adjustment rollers (102).

2. The continuous treatment equipment for anti-oxidation passivation liquid for cooling and annealing copper wire drawing as described in claim 1, characterized in that, The inner wall of the guide groove is provided with several equidistant protrusions; the protrusions on the interface adjustment roller (102) closer to the discharge mechanism are smaller.

3. The continuous treatment equipment for anti-oxidation passivation liquid for cooling and annealing copper wire drawing as described in claim 1, characterized in that, Several infusion units (106) are fixedly installed on both sides of the inner wall of the treatment tank (101). Each infusion unit (106) includes an infusion rack (1061). A diversion plate (1062) is fixedly connected to one side of the infusion rack (1061). Several infusion ports (1063) are opened in the lower middle part of one side of the diversion plate (1062).

4. The continuous treatment equipment for anti-oxidation passivation liquid for cooling and annealing copper wire drawing as described in claim 1, characterized in that, A flow-dispersing assembly (103) is provided between several interface adjustment rollers (102). The flow-dispersing assembly (103) includes a flow-dispersing hood (1031). The bottom of the flow-dispersing hood (1031) is fixedly connected to the bottom of the inner wall of the treatment tank (101). A central tube (1032) is fixedly connected to the middle of the flow-dispersing hood (1031). A flow-dispersing pipe (1037) is fixedly connected to one side of the central tube (1032). A liquid pump (1038) is provided at one end of the flow-dispersing pipe (1037). The inlet of the liquid pump (1038) is connected to the inner cavity of the treatment tank (101).

5. The continuous treatment equipment for anti-oxidation passivation liquid for cooling and annealing copper wire drawing as described in claim 4, characterized in that, The top of the central tube (1032) is provided with a reflux port (1034), and the outer wall of the reflux port (1034) is covered with a sampling cover (1035). One end of the sampling cover (1035) is fixedly connected to a sampling tube (1036).

6. The continuous treatment equipment for anti-oxidation passivation liquid for cooling and annealing copper wire drawing as described in claim 4, characterized in that, Both ends of the inner wall of the processing tank (101) are provided with wire assemblies. The wire assembly includes a wire frame (111). The bottom of the wire frame (111) is provided with a movable cavity. The inner wall of the movable cavity is slidably connected to a movable frame (112). A push spring is provided between the top of the movable frame (112) and the inner wall of the movable cavity. The bottom of the movable frame (112) is rotatably connected to a wire pressing roller (113).

7. The continuous treatment equipment for anti-oxidation passivation liquid for cooling and annealing copper wire drawing as described in claim 1, characterized in that, The top of the processing tank (101) is provided with a cover plate (105). Several positive pressure air vents (107) are provided on both sides of the inner wall of the processing tank (101). The bottom of the several positive pressure air vents (107) is respectively provided with the top of several interface adjustment rollers (102). The processing tank (101) is provided with a feed port and a discharge port on the side near the feeding mechanism and the discharge mechanism respectively. The inner walls of the feed port and the discharge port are fixedly connected with a flow guide hood (110). The inner wall of the flow guide hood (110) is inclined.

8. The continuous treatment equipment for anti-oxidation passivation liquid for cooling and annealing copper wire drawing as described in claim 1, characterized in that, The feeding mechanism includes a feeding hood (201), and a guide tube (202) is fixedly connected to the inner wall of the feeding hood (201). Several guide rollers (203) are rotatably installed on the inner wall of the guide tube (202). A guide groove is opened in the middle of the guide roller (203), and a friction plate is fixedly connected to the inner wall of the guide groove. One end of the guide tube (202) is correspondingly set to one end of the feeding port.

9. The continuous treatment equipment for anti-oxidation passivation liquid for cooling and annealing copper wire drawing as described in claim 8, characterized in that, A film removal assembly (204) is provided between the guide tube (202) and the feed inlet. The film removal assembly (204) includes a film removal ring (2041), a liquid tank (2042) is provided inside the film removal ring (2041), a plurality of ventilation holes (2043) are provided in the middle of the liquid tank (2042), and a liquid pipe (2045) is fixedly connected to one side of the liquid tank (2042).

10. The continuous treatment equipment for anti-oxidation passivation liquid for cooling and annealing copper wire drawing as described in claim 1, characterized in that, The discharge mechanism includes a discharge conduit (301), and a recovery pipe (302) that is inclined upward is fixedly connected to one end of the discharge conduit (301) away from the processing tank (101). A heat dissipation sleeve (303) is fixedly connected to the middle of the inner wall of the recovery pipe (302). A plurality of heat dissipation fins (304) are fixedly connected to the outer wall of the heat dissipation sleeve (303). A return pipe (305) is fixedly connected to the bottom of the inner wall of the heat dissipation sleeve (303).

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