Copper wire passivation device

Abstract

The present invention discloses a copper wire passivation device, which relates to the field of copper wire drawing technology, and includes the following steps: Step 1: drawing a copper conductor material into a single wire through a wire drawing machine, using the copper conductor material as the wire material to pay out the wire, and drawing it into a copper single wire through a wire drawing machine that draws a round core; Step 2: arranging the several copper single wires obtained in Step 1 around the round core wire and twisting them into a wire blank through a twisting machine, so that the arc surface of each copper single wire faces the round core wire, and then pre-twisting the copper single wire. Through the above process, the twisted copper wire can be passivated, so that a passivation film can be formed on the surface of the copper wire, so that the oxide film formed on the surface of the copper wire can be at a more reasonable thickness, so that the oxide film can enhance the tensile strength and fracture resistance of the copper wire, and at the same time can avoid the oxide film from being too thick and cracking, thereby improving the mechanical properties of the copper wire.

Description

Technical Field

[0001] The invention relates to the technical field of copper wire drawing, in particular to a copper wire passivation device. Background Art

[0002] Copper wire is a filament made of copper. It has a variety of uses, mainly in the fields of electrical, mechanical, chemical, metal processing, architectural decoration, medical, etc. The copper wire blank requires the copper wire blank drawing process during the processing.

[0003] Copper wire drawing is a metalworking process that compresses the cross-sectional area of ​​a copper wire through a die under the action of an external force, thereby obtaining the desired cross-sectional shape and size. This process not only changes the size of the copper wire, but also reorganizes the crystal structure inside the copper wire through plastic deformation, reducing the distance between particles and obtaining more uniform and fine grains.

[0004] During the drawing process, as the copper wire passes through the drawing die, its diameter changes significantly and its temperature rises significantly, causing significant internal stress in the wire. To prevent deformation or breakage due to this stress, the wire is annealed after each drawing pass to eliminate the internal stress in the copper conductor blank. (CN111872155A‌‌‌‌)

[0005] The Chinese invention patent with patent publication number CN116060465B describes a copper wire drawing method for producing tinned copper stranded wire. The method gradually draws the copper wire into a copper wire of the required diameter through multiple drawing processes, and then anneals the drawn copper wire to eliminate the internal stress generated in the copper wire during the drawing process, thereby improving the quality and strength of the copper wire. However, in the above-mentioned drawing method, the internal stress of the copper wire is eliminated only through the annealing process, which has extremely limited effect on the improvement of the tensile strength and fracture strength of the copper wire. Summary of the Invention

[0006] The object of the present invention is to provide a copper wire passivation device to solve the problem that in the existing copper wire drawing method proposed in the above background technology, only annealing the copper wire after drawing is performed, which cannot effectively improve the tensile strength and fracture strength of the copper wire.

[0007] To achieve the above object, the present invention provides the following technical solution: a copper wire passivation device, comprising the following steps:

[0008] Step 1: Use a wire drawing machine to draw the copper conductor material into a single wire, use the copper conductor material as the wire pay-off, and draw it into a copper single wire through a wire drawing unit with a round core;

[0009] Step 2: Arrange the several copper single wires obtained in step 1 around the round core wire and twist them into a conductor blank using a stranding machine, so that the arc surface of each copper single wire faces the round core wire. Then, pre-twist the copper single wires and rotate them around their own axis to ensure that the small arc surface of the copper single wire faces the core wire. Finally, the copper single wires and the core wire are combined at a forming and stranding die and twisted to form a copper conductor blank.

[0010] Step 3: Place the stranded copper wire blank into a passivation device for passivation treatment;

[0011] Step 4: Place the copper wire blank in an annealing furnace and heat it to 300-320°C for 6-12 hours, then allow it to cool naturally to room temperature to become a semi-finished copper wire product.

[0012] Step 5: Wrap the copper wire semi-finished product with a protective sheath and an insulating sheath, and then conduct quality inspection.

[0013] Preferably, the passivation device includes a passivation box, in which a guide conveying assembly and a displacement assembly are provided, the guide conveying assembly is connected to the displacement assembly, the guide conveying assembly is used to convey the copper wire blank immersed in the passivation box, and the displacement assembly is used to drive the copper wire blank to move in the passivation box through the guide conveying assembly. The advantage of such an arrangement is that the contact range between the copper wire blank immersed in the passivation box and the passivation liquid can be increased, so that the concentration of the passivation liquid on the surface of the copper wire blank is always in a high state, thereby improving the passivation effect on the surface of the copper wire blank.

[0014] Preferably, the displacement assembly includes an up and down swinging mechanism and a back and forth swinging mechanism, which respectively drive the copper wire blank to swing up and down and back and forth in the passivation box. The advantage of this arrangement is that the copper wire blank can come into contact with the passivation liquid in a larger range, further improving the passivation effect of the passivation device.

[0015] Preferably, the up and down swinging mechanism includes two rotating shafts symmetrically connected and rotated between the front and rear inner side walls of the passivation box, two first fixed bars are symmetrically fixedly sleeved on the outer circumferences of the two rotating shafts, two pairs of second fixed bars are symmetrically fixedly connected on the adjacent sides of the two first fixed bars, and two groups of fixed plates are symmetrically fixedly connected on the adjacent sides of the two pairs of second fixed bars, and the two groups of fixed plates are distributed in an inverted eight shape, and each group of fixed plates is composed of two pairs of fixed plates symmetrically distributed front and back, and the guide conveying assembly includes two pairs of conveying rollers symmetrically connected and rotated between the adjacent sides of each pair of two fixed plates, and the two pairs of conveying rollers are driven by a first motor in the mounting box fixedly connected to the side surfaces of the fixed plates. The copper wire billet passes between two pairs of conveying rollers, and the up and down swinging mechanism also includes a driving unit connected to the front side of the passivation box, and the front ends of the two rotating shafts pass through the front side wall of the passivation box and are connected to the driving unit, and the driving unit is used to drive the two rotating shafts to rotate back and forth clockwise or counterclockwise in opposite directions. The advantage of this arrangement is that the two rotating shafts are driven by the driving unit to rotate back and forth clockwise or counterclockwise in opposite directions, and the two rotating shafts drive the two groups of fixed plates to swing back and forth up and down through the first fixed bar and the second fixed bar, so that the copper wire billet can be driven to swing back and forth up and down in the passivation liquid through the guide conveying assembly, so that the concentration of the passivation liquid on the surface of the copper wire billet can always be kept at a high state.

[0016] Preferably, the front-to-back swinging mechanism includes two pairs of hinged rods symmetrically connected to the adjacent sides of the two first fixed bars through a first rotating rod and a first torsion spring, and the ends of the two pairs of hinged rods away from the first fixed bars are respectively fixedly connected to the distant sides of the two pairs of second fixed bars. The front-to-back swinging mechanism also includes a pushing mechanism connected to the passivation box, and the pushing mechanism is used to push the two pairs of hinged rods distributed front and back to swing back and forth in opposite directions.

[0017] The two lever arrangement comprises two bosses, each of which is adapted to engage the two bosses and, when the bosses are engaged, two bosses are engaged to the two bosses and, when the bosses are engaged, two bosses are engaged to the two bosses.

[0018] Preferably, the passivation box is also provided with an up and down swing rhythm adjustment component, and the up and down swing rhythm adjustment component includes two mounting cavities symmetrically opened inside the two fixed columns, and two pairs of second motors are symmetrically fixedly connected on the bottom walls of the two mounting cavities, and the output ends of the two pairs of second motors are symmetrically fixedly connected to the two pairs of second rotating rods, the top ends of the two pairs of second rotating rods respectively pass through the top walls of the two fixed columns and are symmetrically fixedly connected to the two pairs of threaded rods, and the two second rotating rods are symmetrically rotatably connected to the top walls of the two fixed columns through sealed bearings, and the bottoms of the two driving blocks are respectively threadedly sleeved between the two pairs of threaded rods. The advantage of this arrangement is that the second motor drives the second rotating rod to rotate, and the second rotating rod drives the threaded rod to rotate to drive the driving block to move up and down, so that the two pairs of driving rods can move closer to or away from each other, so that the copper wire blank can swing in the passivation liquid with more trajectories, further increasing the contact range between the passivation liquid and the copper wire blank, and greatly improving the passivation effect of the passivation device.

[0019] Preferably, each pair of two fixed plates is connected to a stirring assembly, and the stirring assembly includes two groups of sealed boxes symmetrically connected to each pair of two fixed plates, and a third motor is fixedly connected to each of the two sealed boxes. The output ends of the two groups of third motors respectively pass through the tops of the two groups of sealed boxes and are symmetrically fixedly connected to two groups of third rotating rods. A plurality of stirring blades are fixedly sleeved on the outer circumferences of the two groups of third rotating rods at equal distances from top to bottom. The two groups of stirring assemblies are respectively located on the front and rear sides of the copper wire blank passing between the pair of fixed plates. Two groups of overflow chambers are symmetrically opened on the side surfaces of each pair of two fixed plates. The multiple overflow chambers in each group are arranged at equal distances along the length direction of the fixed plates. The multiple overflow chambers in each group are staggered with each group of third rotating rods. The advantage of this arrangement is that the third motor can drive the stirring blades to stir on the front and rear sides of the copper wire blank, thereby stirring and mixing the passivation liquid near the copper wire blank, ensuring that the passivation liquid contacted by the surface of the copper wire blank always has a high concentration, thereby ensuring the passivation effect on the copper wire blank.

[0020] Preferably, an auxiliary passivation component is connected between each pair of two fixed plates, and the auxiliary passivation component can increase the stirring range of the stirring component. The advantage of such an arrangement is that it can significantly improve the stirring and mixing effect of the passivation liquid, so that the diluted passivation liquid that has been in contact with the surface of the copper wire blank and the surrounding passivation liquid can be mixed more evenly, ensuring that the passivation liquid around the surface of the copper wire blank has a stable and high concentration, thereby improving the passivation effect on the copper wire blank.

[0021] Preferably, the auxiliary passivation assembly includes two pairs of fixed blocks symmetrically fixedly connected to the adjacent sides of each pair of two fixed plates, two fourth rotating rods are symmetrically rotatably connected between the adjacent sides of the two pairs of fixed blocks, two swing plates are symmetrically fixedly sleeved on the outer circumferences of the two fourth rotating rods, two groups of sealing boxes are symmetrically fixedly connected to the bottoms of the two swing plates, the tops of the two groups of third rotating rods respectively pass through the two swing plates and extend to their upper sides, two pairs of first elastic members are symmetrically fixedly connected to the left and right sides of the two swing plates and the adjacent sides of the two pairs of fixed blocks respectively, and two groups of paddle plates are symmetrically fixedly connected to the adjacent sides of the two swing plates, and the paddle plates are fan-shaped. The advantage of this arrangement is that when the paddle plates swing back and forth with the fixed plates, the paddle plates cannot swing up and down synchronously with the fixed plates due to the resistance of the passivation liquid, thereby causing the angle between the third rotating rod and the fixed plate to change, so that the stirring range of the stirring blade can be reliably increased, and no additional power source is required to drive the stirring blade to swing relative to the fixed plate, thereby reducing the energy consumption of the passivation device and improving the economy and reliability of the passivation device.

[0022] In summary, the technical effects and advantages of the present invention are as follows:

[0023] 1. In the present invention, by passivating the twisted copper wire, a passivation film can be formed on the surface of the copper wire. In this way, the oxide film formed on the surface of the copper wire can be at a more reasonable thickness, so that the oxide film can enhance the tensile strength and fracture resistance of the copper wire, and at the same time avoid the oxide film from being too thick and cracking, thereby improving the mechanical properties of the copper wire.

[0024] 2. In the present invention, by providing a guide conveying assembly and a displacement assembly, the displacement assembly drives the copper wire to move in the passivation box through the guide conveying assembly, thereby increasing the contact range between the copper wire entering the passivation box and the passivation liquid, so that the concentration of the passivation liquid on the surface of the copper wire is always at a high state, thereby improving the passivation effect on the surface of the copper wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 This is a first structural schematic diagram of a copper wire passivation device according to an embodiment of the present invention;

[0027] Figure 2 This is a second structural schematic diagram of a copper wire passivation device according to an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of a first cross-sectional structure of a copper wire passivation device according to an embodiment of the present invention;

[0029] Figure 4 This is a second cross-sectional structural diagram of a copper wire passivation device according to an embodiment of the present invention;

[0030] Figure 5 This is a third cross-sectional structural diagram of a copper wire passivation device according to an embodiment of the present invention;

[0031] Figure 6 This is a partial structural diagram of a copper wire passivation device according to an embodiment of the present invention;

[0032] Figure 7 is a front view of a fixing plate according to an embodiment of the present invention;

[0033] Figure 8 is a front cross-sectional view of a fixing column according to an embodiment of the present invention;

[0034] Figure 9 In the embodiment of the present invention Figure 1 A magnified schematic diagram of point A in the middle;

[0035] Figure 10 In the embodiment of the present invention Figure 6 Enlarged schematic diagram of point B in the middle.

[0036] In the figure: 1, passivation box; 11, liquid inlet pipe; 12, liquid discharge pipe; 2, guide conveying assembly; 21, conveying roller; 22, installation box; 3, displacement assembly; 31, up and down swing mechanism; 311, fixed plate; 312, rotating shaft; 313, first fixing bar; 314, second fixing bar; 315, driving unit; 3151, gear; 3152, cylinder; 3153, rack; 32, front and back swing mechanism; 321, hinged rod; 3 22. Pushing mechanism; 3221. Fixed column; 3222. Driving block; 3223. Driving rod; 4. Overflow chamber; 5. Up and down swing rhythm adjustment component; 51. Mounting chamber; 52. Second motor; 53. Second rotating rod; 54. Threaded rod; 6. Stirring component; 61. Sealing box; 62. Third rotating rod; 63. Stirring blade; 7. Auxiliary passivation component; 71. Fourth rotating rod; 72. Swing plate; 73. First elastic member; 74. Paddle plate. DETAILED DESCRIPTION

[0037] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention. Example 1

[0038] Please refer to Figures 1-10 A copper wire passivation device is shown, comprising the following steps:

[0039] Step 1: Use a wire drawing machine to draw the copper conductor material into a single wire, use the copper conductor material as the wire pay-off, and draw it into a copper single wire through a wire drawing unit with a round core;

[0040] Step 2: Arrange the several copper single wires obtained in step 1 around the round core wire and twist them into a conductor blank using a stranding machine, so that the arc surface of each copper single wire faces the round core wire. Then, pre-twist the copper single wires and rotate them around their own axis to ensure that the small arc surface of the copper single wire faces the core wire. Finally, the copper single wires and the core wire are combined at a forming and stranding die and twisted to form a copper conductor blank.

[0041] Step 3: Place the stranded copper wire blank into a passivation device for passivation treatment;

[0042] Step 4: Place the copper wire blank in an annealing furnace and heat it to 300-320°C for 6-12 hours, then allow it to cool naturally to room temperature to become a semi-finished copper wire product.

[0043] Step 5: Wrap the copper wire semi-finished product with a protective sheath and an insulating sheath, and then conduct quality inspection.

[0044] refer to Figure 1 and Figure 3 The passivation device includes a passivation box 1, a guide conveying assembly 2 and a displacement assembly 3 are provided in the passivation box 1, the guide conveying assembly 2 is connected to the displacement assembly 3, the guide conveying assembly 2 is used to convey the copper wire blank immersed in the passivation box 1, and the displacement assembly 3 is used to drive the copper wire blank to move in the passivation box 1 through the guide conveying assembly 2;

[0045] The back of the passivation box 1 is connected to a liquid inlet pipe 11 and a liquid discharge pipe 12 for injecting the passivation liquid into the passivation box 1 or discharging the used passivation liquid from the passivation box 1 .

[0046] Specifically, the contact range between the copper wire blank entering the passivation box 1 and the passivation solution can be increased, so that the concentration of the passivation solution on the surface of the copper wire blank is always at a high state, thereby improving the passivation effect on the surface of the copper wire blank.

[0047] refer to Figure 1 、 Figure 3 and Figure 4 The displacement assembly 3 includes an up-and-down swing mechanism 31 and a back-and-forth swing mechanism 32 , which respectively drive the copper wire blank to swing up and down and back and forth in the passivation box 1 .

[0048] Specifically, the copper wire blank can be in contact with the passivation liquid in a wider range, further improving the passivation effect of the passivation device.

[0049] refer to Figure 3-Figure 6 The up and down swing mechanism 31 includes two rotating shafts 312 symmetrically connected between the front and rear inner walls of the passivation box 1. Two first fixing bars 313 are symmetrically fixedly sleeved on the outer circumference of the two rotating shafts 312. Two pairs of second fixing bars 314 are symmetrically fixedly connected on the adjacent sides of the two first fixing bars 313. Two groups of fixing plates 311 are symmetrically fixedly connected on the adjacent sides of the two pairs of second fixing bars 314. The two groups of fixing plates 311 are distributed in an inverted eight shape. Each group of fixing plates 311 consists of two pairs of fixing plates 311 symmetrically distributed front and back. The guide conveying assembly 2 includes Two pairs of conveying rollers 21 are symmetrically connected between the adjacent sides of each pair of fixed plates 311. The two pairs of conveying rollers 21 are driven by a first motor in a mounting box 22 fixedly connected to the side of the fixed plate 311. The copper wire blank passes through the two pairs of conveying rollers 21. The up and down swinging mechanism 31 also includes a driving unit 315 connected to the front side of the passivation box 1. The front ends of the two rotating shafts 312 pass through the front side wall of the passivation box 1 and are connected to the driving unit 315. The driving unit 315 is used to drive the two rotating shafts 312 to rotate back and forth clockwise or counterclockwise in opposite directions.

[0050] Specifically, the driving unit 315 drives the two rotating shafts 312 to rotate clockwise or counterclockwise in opposite directions. The two rotating shafts 312 drive the two sets of fixed plates 311 to swing back and forth up and down through the first fixing bar 313 and the second fixing bar 314. As a result, the copper wire blank can be driven to swing back and forth in the passivation solution through the guide conveying assembly 2, so that the concentration of the passivation solution on the surface of the copper wire blank can always be kept at a high state.

[0051] The driving unit 315 includes two gears 3151 symmetrically fixedly sleeved on the front ends of the two rotating shafts 312, and the driving unit 315 also includes two cylinders 3152 symmetrically fixedly connected to the front side of the passivation box 1. Two racks 3153 are symmetrically fixedly connected to the output ends of the two cylinders 3152. The two racks 3153 are respectively engaged with the two gears 3151, so that the starting cylinder 3152 pushes the two racks 3153 to move back and forth up and down. The two racks 3153 can be engaged respectively to drive the two gears 3151 to rotate back and forth clockwise or counterclockwise in opposite directions, thereby driving the two sets of fixed plates 311 to rotate back and forth clockwise or counterclockwise in opposite directions, so that the copper wire billet immersed in the passivation solution can be driven to swing back and forth up and down.

[0052] refer to Figure 3-Figure 5 The front-to-back swinging mechanism 32 includes two pairs of hinged rods 321 symmetrically connected to the adjacent sides of the two first fixed bars 313 through a first rotating rod and a first torsion spring. The ends of the two pairs of hinged rods 321 away from the first fixed bar 313 are respectively fixedly connected to the sides away from the two pairs of second fixed bars 314. The front-to-back swinging mechanism 32 also includes a pushing mechanism 322 connected to the passivation box 1. The pushing mechanism 322 is used to push the two pairs of hinged rods 321 distributed front and back to swing back and forth in opposite directions.

[0053] Reference 3- Figure 5 The pushing mechanism 322 includes two fixed columns 3221 symmetrically fixedly connected to the left and right inner walls of the passivation box 1, and two driving blocks 3222 are symmetrically fixedly connected to the adjacent sides of the two fixed columns 3221. The front and rear sides of the two driving blocks 3222 are symmetrical inclined surfaces and the thickness of the driving blocks 3222 gradually increases from bottom to top. The pushing mechanism 322 also includes two pairs of driving rods 3223 symmetrically fixedly connected to the adjacent sides of the front and rear pairs of hinged rods 321, and the adjacent ends of the two pairs of driving rods 3223 are respectively tightly pressed against the front and rear inclined surfaces of the two driving blocks 3222.

[0054] Specifically, when the driving unit 315 drives the two first fixed bars 313 to swing back and forth, the two first fixed bars 313 can drive the two pairs of driving rods 3223 to swing up and down through the two pairs of hinged rods 321. In this way, under the limiting drive of the front and rear inclined surfaces of the two driving blocks 3222, the two pairs of driving rods 3223 can be moved away from or close to each other, thereby driving the copper wire blank to swing back and forth in the passivation liquid, so that the copper wire blank can contact the passivation liquid in a larger range, further improving the passivation effect of the passivation device.

[0055] refer to Figure 8The passivation box 1 is also provided with an up and down swing rhythm adjustment component 5, which includes two mounting cavities 51 symmetrically opened inside the two fixed columns 3221, and two pairs of second motors 52 are symmetrically fixedly connected to the bottom walls of the two mounting cavities 51. The output ends of the two pairs of second motors 52 are symmetrically fixedly connected to two pairs of second rotating rods 53, and the top ends of the two pairs of second rotating rods 53 respectively pass through the top walls of the two fixed columns 3221 and are symmetrically fixedly connected to two pairs of threaded rods 54. The two second rotating rods 53 are symmetrically rotatably connected to the top walls of the two fixed columns 3221 through sealed bearings, and the bottoms of the two driving blocks 3222 are respectively threadedly sleeved between the two pairs of threaded rods 54.

[0056] Specifically, the second motor 52 drives the second rotating rod 53 to rotate, and the second rotating rod 53 drives the threaded rod 54 to rotate to drive the driving block 3222 to move up and down. In this way, the two pairs of driving rods 3223 can move closer to or away from each other, so that the copper wire blank can swing in the passivation liquid with more trajectories, further increasing the contact range between the passivation liquid and the copper wire blank, and greatly improving the passivation effect of the passivation device.

[0057] refer to Figure 5-Figure 7 , a stirring assembly 6 is connected to each pair of two fixed plates 311, and the stirring assembly 6 includes two groups of sealed boxes 61 symmetrically connected to each pair of two fixed plates 311, and a third motor is fixedly connected to each of the two groups of sealed boxes 61. The output ends of the two groups of third motors respectively pass through the top of the two groups of sealed boxes 61 and are symmetrically fixedly connected to two groups of third rotating rods 62. A plurality of stirring blades 63 are fixedly sleeved on the outer circumference of the two groups of third rotating rods 62 at equal distances from top to bottom. The two groups of stirring assemblies 6 are respectively located on the front and rear sides of the copper wire blank passing through the pair of fixed plates 311, and two groups of overflow chambers 4 are symmetrically opened on the side surfaces of each pair of two fixed plates 311. Each group of multiple overflow chambers 4 is symmetrically arranged along the length direction of the fixed plates 311, and each group of multiple overflow chambers 4 is staggered with each group of third rotating rods 62.

[0058] Specifically, the third motor can drive the stirring blade 63 to stir the front and rear sides of the copper wire blank, thereby stirring and mixing the passivation liquid near the copper wire blank, ensuring that the passivation liquid contacted by the surface of the copper wire blank always has a high concentration, ensuring the passivation effect on the copper wire blank.

[0059] refer to Figure 4 and Figure 6 An auxiliary passivation assembly 7 is connected between each pair of two fixing plates 311 , and the auxiliary passivation assembly 7 can increase the stirring range of the stirring assembly 6 .

[0060] Specifically, the stirring and mixing effect of the passivation liquid can be significantly improved, so that the diluted passivation liquid that has been in contact with the surface of the copper wire billet and the surrounding passivation liquid can be mixed more evenly, ensuring that the passivation liquid around the surface of the copper wire billet has a stable and high concentration, thereby improving the passivation effect on the copper wire billet.

[0061] refer to Figure 6 The auxiliary passivation assembly 7 includes two pairs of fixed blocks symmetrically fixedly connected to the adjacent sides of each pair of two fixed plates 311, two fourth rotating rods 71 ​​are symmetrically rotatably connected between the adjacent sides of the two pairs of fixed blocks, and two swing plates 72 are symmetrically fixedly sleeved on the outer circumferences of the two fourth rotating rods 71. Two groups of sealing boxes 61 are symmetrically fixedly connected to the bottoms of the two swing plates 72, and the tops of the two groups of third rotating rods 62 respectively pass through the two swing plates 72 and extend to their upper sides. Two pairs of first elastic members 73 are symmetrically fixedly connected to the left and right sides of the two swing plates 72 and the adjacent sides of the two pairs of fixed blocks respectively. Two groups of dial plates 74 are symmetrically fixedly connected to the adjacent sides of the two swing plates 72, and the dial plates 74 are fan-shaped.

[0062] Specifically, when the paddle plate 74 swings back and forth up and down with the fixed plate 311, the paddle plate 74 cannot swing up and down synchronously with the fixed plate 311 due to the resistance of the passivation liquid, thereby causing the angle between the third rotating rod 62 and the fixed plate 311 to change. In this way, the stirring range of the stirring blade 63 can be reliably increased, and no additional power source is required to drive the stirring blade 63 to swing relative to the fixed plate 311, thereby reducing the energy consumption of the passivation device and improving the economy and reliability of the passivation device.

[0063] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A copper wire passivation device, characterized in that: The invention comprises a passivation device, wherein the passivation device comprises a passivation box (1), wherein a guide conveying component (2) and a displacement component (3) are provided in the passivation box (1); The displacement assembly (3) includes an up-and-down swing mechanism (31) and a forward-and-backward swing mechanism (32); The up-and-down swing mechanism (31) comprises two rotating shafts (312) symmetrically connected to the front and rear inner side walls of the passivation box (1); two first fixing bars (313) are symmetrically fixedly sleeved on the outer circumferences of the two rotating shafts (312); two pairs of second fixing bars (314) are symmetrically fixedly connected on the adjacent sides of the two first fixing bars (313); two groups of fixing plates (311) are symmetrically fixedly connected on the adjacent sides of the two pairs of second fixing bars (314); the two groups of fixing plates (311) are distributed in an inverted figure eight shape, and each group of fixing plates (311) consists of two pairs of fixing plates (311) symmetrically distributed front and back; The up-and-down swing mechanism (31) and the forward-and-backward swing mechanism (32) respectively drive the copper wire blank to swing up-and-down and forward-and-backward in the passivation box (1); The front-to-back swing mechanism (32) comprises two pairs of hinged rods (321) symmetrically connected to adjacent sides of two first fixing bars (313) through a first rotating rod and a first torsion spring, one end of the two pairs of hinged rods (321) away from the first fixing bar (313) being fixedly connected to the distant sides of the two pairs of second fixing bars (314), respectively. The front-to-back swing mechanism (32) further comprises a pushing mechanism (322) connected to the passivation box (1), the pushing mechanism (322) being used to push the two pairs of hinged rods (321) distributed front and back to swing back and forth in opposite directions. The pushing mechanism (322) comprises two fixed columns (3221) symmetrically fixedly connected to the left and right inner side walls of the passivation box (1); two driving blocks (3222) are symmetrically fixedly connected to the adjacent sides of the two fixed columns (3221); the front and rear side surfaces of the two driving blocks (3222) are both symmetrical inclined surfaces, and the thickness of the driving blocks (3222) gradually increases from bottom to top; the pushing mechanism (322) further comprises two pairs of driving rods (3223) symmetrically fixedly connected to the adjacent sides of the front and rear pairs of hinged rods (321); the adjacent ends of the two pairs of driving rods (3223) are respectively pressed against the front and rear inclined surfaces of the two driving blocks (3222); The passivation box (1) is further provided with an up-and-down swing rhythm adjustment component (5), the up-and-down swing rhythm adjustment component (5) comprising two mounting cavities (51) symmetrically opened inside the two fixed columns (3221), two pairs of second motors (52) being symmetrically fixedly connected to the bottom walls of the two mounting cavities (51), two pairs of second rotating rods (53) being symmetrically fixedly connected to the output ends of the two pairs of second motors (52), the top ends of the two pairs of second rotating rods (53) respectively passing through the top walls of the two fixed columns (3221) and being symmetrically fixedly connected to the two pairs of threaded rods (54), the two second rotating rods (53) being symmetrically rotationally connected to the top walls of the two fixed columns (3221) via sealed bearings, and the bottoms of the two driving blocks (3222) being respectively threadedly sleeved between the two pairs of threaded rods (54).

2. A copper wire passivation device according to claim 1, characterized in that: The guide conveying assembly (2) is connected to the displacement assembly (3), the guide conveying assembly (2) is used to convey the copper wire blank immersed in the passivation box (1), and the displacement assembly (3) is used to drive the copper wire blank to move in the passivation box (1) through the guide conveying assembly (2).

3. A copper wire passivation device according to claim 2, characterized in that: The guide conveying assembly (2) includes two pairs of conveying rollers (21) symmetrically connected between adjacent sides of each pair of two fixed plates (311), the two pairs of conveying rollers (21) being driven by a first motor in a mounting box (22) fixedly connected to the side of the fixed plate (311), and the copper wire blank passes between the two pairs of conveying rollers (21). The up-and-down swinging mechanism (31) further includes a driving unit (315) connected to the front of the passivation box (1), the front ends of the two rotating shafts (312) passing through the front side wall of the passivation box (1) and connected to the driving unit (315), and the driving unit (315) is used to drive the two rotating shafts (312) to rotate clockwise or counterclockwise in opposite directions.

4. A copper wire passivation device according to claim 3, characterized in that: Each pair of two fixed plates (311) is connected to a stirring assembly (6), the stirring assembly (6) comprising two groups of sealed boxes (61) symmetrically connected to each pair of two fixed plates (311), a third motor being fixedly connected in each of the two sealed boxes (61), the output ends of the two groups of third motors respectively passing through the tops of the two groups of sealed boxes (61) and symmetrically fixedly connected to two groups of third rotating rods (62), a plurality of stirring blades (63) being fixedly sleeved equidistantly from top to bottom on the outer circumferences of the two groups of third rotating rods (62), the two groups of stirring assemblies (6) being respectively located on the front and rear sides of the copper wire blank passing between the pair of fixed plates (311), two groups of overflow chambers (4) being symmetrically opened on the side surfaces of each pair of two fixed plates (311), the plurality of overflow chambers (4) in each group being equidistantly arranged along the length direction of the fixed plates (311), and the plurality of overflow chambers (4) in each group being staggered with each group of third rotating rods (62).

5. A copper wire passivation device according to claim 4, characterized in that: An auxiliary passivation assembly (7) is connected between each pair of two fixed plates (311), and the auxiliary passivation assembly (7) can increase the stirring range of the stirring assembly (6).

6. A copper wire passivation device according to claim 5, characterized in that: The auxiliary passivation assembly (7) includes two pairs of fixed blocks symmetrically fixedly connected to adjacent sides of each pair of two fixed plates (311), two fourth rotating rods (71) are symmetrically rotatably connected between adjacent sides of the two pairs of fixed blocks, two swing plates (72) are symmetrically fixedly sleeved on the outer circumferences of the two fourth rotating rods (71), two groups of the sealing boxes (61) are symmetrically fixedly connected to the bottoms of the two swing plates (72), the top ends of the two groups of the third rotating rods (62) respectively penetrate the two swing plates (72) and extend to the upper sides thereof, two pairs of first elastic members (73) are symmetrically fixedly connected to the left and right sides of the two swing plates (72) and the adjacent sides of the two pairs of fixed blocks, and two groups of dial plates (74) are symmetrically fixedly connected to the adjacent sides of the two swing plates (72), and the dial plates (74) are fan-shaped.

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