Anti-oxidation annealing device for ultra-fine enameled wire

Abstract

The utility model relates to the technical field of enamelled wire processing equipment, in particular to an anti-oxidation annealing device for ultra-fine enamelled wires, which comprises an annealing furnace, a furnace tube arranged in the annealing furnace and a cooling water tank arranged at one end of the annealing furnace, the furnace tube is obliquely arranged, an annealing tube is arranged in the cooling water tank, and the annealing tube is arranged in the annealing furnace. One end of the annealing pipe extends into the cooling water tank, the other end of the annealing pipe is connected with the lower end of the furnace pipe, a nitrogen conveying assembly is arranged between the annealing pipe and the furnace pipe, and a nitrogen return assembly is arranged at the higher end of the furnace pipe. The nitrogen transmission assembly and the nitrogen return assembly are arranged at the two ends of the furnace tube, so that the whole furnace tube is filled with nitrogen, a copper wire is protected from being oxidized in the annealing process, and the annealing quality of the copper wire is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of enameled wire processing equipment, in particular to an anti-oxidation annealing device for ultra-fine enameled wire. Background Art

[0002] Ultrafine wire drawing involves cold-pressing the base material through a diamond die in a wire drawing machine, gradually drawing the conductor from a diameter of 1.13mm or 0.9mm down to a semi-finished wire as fine as 0.02mm. This process relies primarily on the pull of a synchronous motor, which gradually thins the conductor through the cold extrusion of the diamond die. After drawing, the base material must be annealed in an annealing furnace before entering the enameling machine for varnishing and baking. Annealing heats the conductor, which has hardened due to lattice changes during the die drawing process, to a certain temperature, causing the molecular lattice to rearrange and restore the required softness. It also removes any residual lubricant and oil from the conductor surface during the drawing process, making it easier to apply varnish and ensuring the quality of the enameled wire. Most importantly, it ensures the enameled wire maintains the appropriate softness and elongation for winding use, while also improving its electrical conductivity.

[0003] The Chinese utility model patent with authorization announcement number CN204356376U discloses a device for annealing enameled wire before painting. The annealing device controls the tension of the copper wire in real time by means of a movable pulley and a tension potentiometer arranged before entering the furnace tube, thereby preventing phenomena such as wire jump and tearing during the annealing process. At the same time, during the annealing process, the copper wire is evenly stressed and the stretching productivity remains consistent. However, after the copper wire enters the furnace tube, the high temperature in the furnace tube makes the copper wire easily oxidized when in contact with air, and the paint liquid cannot firmly adhere to the copper wire, resulting in poor annealing quality of the enameled wire, which needs to be improved. Utility Model Content

[0004] The purpose of the utility model is to provide an anti-oxidation annealing device for ultra-fine enameled wire to solve the problems raised in the background technology.

[0005] The above-mentioned object of the present utility model is achieved through the following technical scheme: an ultra-fine enameled wire anti-oxidation annealing device, comprising an annealing furnace, a furnace tube arranged in the annealing furnace, and a cooling water trough arranged at one end of the annealing furnace, wherein the furnace tube is arranged at an angle, an annealing tube is arranged in the cooling water trough, one end of the annealing tube extends into the cooling water trough, and the other end is connected to the lower end of the furnace tube, a nitrogen gas transmission component is arranged between the annealing tube and the furnace tube, and a nitrogen gas return component is arranged at the higher end of the furnace tube.

[0006] Preferably, the nitrogen gas delivery assembly includes a connecting sleeve and a gas delivery pipe, the connecting sleeve is connected between the furnace tube and the annealing tube, and the gas delivery pipe is connected to the connecting sleeve.

[0007] Preferably, a partition is provided in the connecting sleeve, which divides the interior of the connecting sleeve into an upper connecting chamber and a lower connecting chamber. The furnace tube is connected to the upper connecting chamber, the annealing tube is connected to the lower connecting chamber, and the gas pipe is connected to the upper connecting chamber. A rear threading hole is provided in the middle of the partition.

[0008] Preferably, the connecting sleeve is provided with an exhaust hole, the exhaust hole is connected to the lower connecting cavity, and a check valve is provided at the exhaust hole.

[0009] Preferably, the nitrogen gas return assembly includes a gas return jacket and an exhaust pipe, the gas return jacket is sleeved on the end of the furnace tube, and the exhaust pipe is connected to the gas return jacket.

[0010] Preferably, a sealing plate is provided at the end of the air return sleeve, and a front threading hole is provided at the center of the sealing plate.

[0011] Preferably, two clamping blocks are provided on the sealing plate, and the clamping blocks are respectively arranged on both sides of the front threading hole. The clamping blocks are slidably connected to the sealing plate, and the sealing plate is provided with an adjusting screw for adjusting the distance between the two clamping blocks, and alcohol cotton pads are provided on the opposite end faces of the two clamping blocks.

[0012] Preferably, a storage cavity is provided in the clamping block, the storage cavity is connected to an infusion tube, a liquid outlet hole connected to the storage cavity is provided on the clamping block, and the alcohol cotton pad is located at the liquid outlet hole.

[0013] Beneficial effects of the utility model:

[0014] 1. This utility model installs nitrogen gas delivery components and nitrogen gas return components at both ends of the furnace tube, so that nitrogen fills the entire furnace tube, protects the copper wire from oxidation during the annealing process, and improves the annealing quality of the copper wire;

[0015] 2. By setting a clamping block and an alcohol cotton pad at the front threading hole, not only can the impurities on the surface of the copper wire be removed, but also the alcohol can form an anti-oxidation diaphragm on the surface of the copper wire, protecting the copper wire from oxidation during the annealing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0017] Figure 2 It is a cross-sectional view of an embodiment of the utility model;

[0018] Figure 3 This is a schematic structural diagram of a nitrogen gas delivery assembly in an embodiment of the present utility model;

[0019] Figure 4This is a schematic structural diagram of a nitrogen gas return assembly in an embodiment of the present utility model;

[0020] Figure 5 is a cross-sectional view of a clamping block in an embodiment of the present utility model;

[0021] In the figure: 1-annealing furnace, 2-furnace tube, 3-cooling water trough, 4-annealing tube, 5-nitrogen gas delivery assembly, 501-connecting sleeve, 502-gas delivery pipe, 503-partition plate, 504-upper connecting cavity, 505-lower connecting cavity, 506-rear threading hole, 507-exhaust hole, 508-check valve, 6-nitrogen return air assembly, 601-return air sleeve, 602-exhaust pipe, 603-sealing plate, 604-front threading hole, 605-clamping block, 606-alcohol cotton pad, 607-storage chamber, 608-liquid outlet, 609-infusion pipe, 610-fixed seat, 611-adjusting screw, 7-copper wire. DETAILED DESCRIPTION

[0022] The present invention will be described in further detail below with reference to the accompanying drawings.

[0023] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

[0024] Example: Figure 1-5 As shown, an ultra-fine enameled wire anti-oxidation annealing device includes an annealing furnace 1 and a cooling water tank 3. A plurality of furnace tubes 2 are installed in parallel in the annealing furnace 1. The annealing furnace 1 heats the furnace tubes 2 by means of electric heating or the like.

[0025] An annealing tube 4 is provided in the cooling water tank 3. The annealing tube 4 is connected to the furnace tube 2, wherein the furnace tube 2 is arranged at an angle. The annealing tube 4 is connected to the lower end of the furnace tube 2, and the other end of the annealing tube 4 extends into the cooling water tank 3, and the annealing tube 4 is immersed in the cooling water in the cooling water tank 3.

[0026] The number of the annealing tubes 4 is the same as that of the furnace tubes 2 , and the inclination angle is also the same as that of the furnace tubes 2 , and the inclination angle range is 10-30°.

[0027] A nitrogen gas delivery assembly 5 is provided between the annealing tube 4 and the furnace tube 2 , and the nitrogen gas delivery assembly 5 is used to introduce nitrogen into the furnace tube 2 to protect the copper wire 7 .

[0028] like Figure 3As shown, the nitrogen gas delivery assembly 5 includes a connecting sleeve 501 and a gas delivery pipe 502. The connecting sleeve 501 is connected between the furnace tube 2 and the annealing tube 4, and the gas delivery pipe 502 is connected to the connecting sleeve 501. A partition 503 is provided in the connecting sleeve 501, which divides the interior of the connecting sleeve 501 into an upper connecting chamber 504 and a lower connecting chamber 505. A rear threading hole 506 is provided in the middle of the partition 503, which connects the upper connecting chamber 504 and the lower connecting chamber 505. The aperture of the rear threading hole 506 matches the diameter of the copper wire 7. The furnace tube 2 is connected to the upper connecting chamber 504, the annealing tube 4 is connected to the lower connecting chamber 505, and the gas delivery pipe 502 is connected to the upper connecting chamber 504.

[0029] The other end of the gas pipe 502 is connected to an air pump and a nitrogen tank. The nitrogen tank passes nitrogen into the connecting sleeve 501 through the air pump and the gas pipe 502. The nitrogen is blocked by the partition 503 and can only enter the furnace tube 2 obliquely upward, thereby protecting the copper wire 7 in the furnace tube 2 from oxidation.

[0030] The connecting sleeve 501 is provided with a vent 507, which communicates with the lower connecting chamber 505. A check valve 508 is provided at the vent 507. After the copper wire 7, heated by the furnace tube 2, enters the annealing tube 4 and the cooling water tank 3, steam generated by the cooling water contacting the copper wire 7 enters the annealing tube 4 and the lower connecting chamber 505 of the connecting sleeve 501. The steam is then discharged through the check valve 508, preventing outside air from entering the annealing tube 4.

[0031] A nitrogen return assembly 6 is provided at the higher end of the furnace tube 2. Figure 4 and Figure 5 As shown, the nitrogen return gas assembly 6 includes a return gas sleeve 601 and an exhaust pipe 602. The return gas sleeve 601 is mounted on the end of the furnace tube 2, and the exhaust pipe 602 is connected to the return gas sleeve 601. The other end of the exhaust pipe 602 is connected to an exhaust pump to collect the exhausted nitrogen back into the nitrogen tank.

[0032] A sealing plate 603 is provided at the end of the return air sleeve 601. A front threading hole 604 is provided in the center of the sealing plate 603. The diameter of the front threading hole 604 matches the diameter of the copper wire 7. When the copper wire 7 passes through the front threading hole 604, the front threading hole 604 is blocked by the copper wire 7, preventing the nitrogen in the furnace tube 2 from being discharged through the front threading hole 604.

[0033] Two clamping blocks 605 are provided on the sealing plate 603. The two clamping blocks 605 are respectively arranged on both sides of the front threading hole 604. In this embodiment, the two clamping blocks 605 are distributed up and down. Alcohol cotton pads 606 are provided on the opposite end faces of the two clamping blocks 605, so that the copper wire 7 is clamped by the alcohol cotton pads 606 when entering the front threading hole 604.

[0034] A storage chamber 607 is provided within the clamping block 605. The storage chamber 607 is connected to an infusion tube 609. The other end of the infusion tube 609 is connected to an alcohol tank. Alcohol in the alcohol tank is delivered to the storage chamber 607 through the infusion tube 609. A liquid outlet 608 is provided on the clamping block 605, communicating with the storage chamber 607. An alcohol pad 606 is located at the liquid outlet 608, allowing the alcohol pad 606 to be soaked and then used to wipe the copper wire.

[0035] In this embodiment, the clamping block 605 is slidably connected to the sealing plate 603 and is installed on the sealing plate 603 by means of a slide groove or a slide rail. The sealing plate 603 is provided with an adjusting screw 611 for adjusting the distance between the two clamping blocks 605. One end of the adjusting screw 611 is rotatably connected to the clamping block 605, and the other end is screwed to the fixed seat 610. The fixed seat 610 is fixed on the sealing plate 603. The distance between the two clamping blocks 605 is adjusted by rotating the adjusting screw 611, thereby adjusting the pressure applied by the alcohol cotton pad 606 on the copper wire 7.

Claims

1. An anti-oxidation annealing device for ultrafine enameled wire, comprising an annealing furnace (1), a furnace tube (2) arranged in the annealing furnace (1), and a cooling water tank (3) arranged at one end of the annealing furnace (1), wherein the furnace tube (2) is arranged at an angle, and is characterized in that: An annealing tube (4) is provided in the cooling water tank (3), one end of the annealing tube (4) extends into the cooling water tank (3), and the other end is connected to the lower end of the furnace tube (2), a nitrogen gas transmission component (5) is provided between the annealing tube (4) and the furnace tube (2), and a nitrogen gas return component (6) is provided at the higher end of the furnace tube (2).

2. The ultra-fine enameled wire anti-oxidation annealing device according to claim 1, characterized in that: The nitrogen gas delivery assembly (5) comprises a connecting sleeve (501) and a gas delivery pipe (502), the connecting sleeve (501) being connected between the furnace tube (2) and the annealing tube (4), and the gas delivery pipe (502) being communicated with the connecting sleeve (501).

3. The ultra-fine enameled wire anti-oxidation annealing device according to claim 2, characterized in that: A partition (503) is provided in the connecting sleeve (501), and the partition (503) divides the interior of the connecting sleeve (501) into an upper connecting chamber (504) and a lower connecting chamber (505). The furnace tube (2) is connected to the upper connecting chamber (504), the annealing tube (4) is connected to the lower connecting chamber (505), and the gas transmission pipe (502) is connected to the upper connecting chamber (504). A rear threading hole (506) is provided in the middle of the partition (503).

4. The ultra-fine enameled wire anti-oxidation annealing device according to claim 3, characterized in that: The connecting sleeve (501) is provided with an exhaust hole (507), the exhaust hole (507) is connected to the lower connecting cavity (505), and a check valve (508) is provided at the exhaust hole (507).

5. The ultra-fine enameled wire anti-oxidation annealing device according to claim 1, characterized in that: The nitrogen gas return assembly (6) comprises a gas return jacket (601) and an exhaust pipe (602), wherein the gas return jacket (601) is sleeved on the end of the furnace tube (2), and the exhaust pipe (602) is connected to the gas return jacket (601).

6. The ultra-fine enameled wire anti-oxidation annealing device according to claim 5, characterized in that: A sealing plate (603) is provided at the end of the air return sleeve (601), and a front threading hole (604) is provided at the center of the sealing plate (603).

7. The ultra-fine enameled wire anti-oxidation annealing device according to claim 6, characterized in that: Two clamping blocks (605) are provided on the sealing plate (603), and the clamping blocks (605) are respectively provided on both sides of the front threading hole (604). The clamping blocks (605) are slidably connected to the sealing plate (603). The sealing plate (603) is provided with an adjusting screw (611) for adjusting the distance between the two clamping blocks (605), and alcohol cotton pads (606) are provided on the opposite end surfaces of the two clamping blocks (605).

8. The ultra-fine enameled wire anti-oxidation annealing device according to claim 7, characterized in that: A storage cavity (607) is provided in the clamping block (605), and the storage cavity (607) is connected to an infusion tube (609). A liquid outlet hole (608) communicating with the storage cavity (607) is provided on the clamping block (605), and the alcohol cotton pad (606) is located at the liquid outlet hole (608).

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