Annealing device of heavy wire drawing machine

Abstract

The utility model relates to the technical field of copper wire production, in particular to a heavy wire drawing machine annealing device which comprises a machine box, and a wiping assembly, a first blow-drying assembly, a nitrogen conveying pipe, a preheating annealing wheel and an upper annealing wheel are arranged in the machine box. A copper wire sequentially passes through a preheating annealing wheel, an upper annealing wheel, a nitrogen conveying pipe, a lower annealing wheel, a cooling liquid tank, a wiping assembly and a first blow-drying assembly, so that the copper wire is preheated between the preheating annealing wheel and the upper annealing wheel and then is heated between the upper annealing wheel and the lower annealing wheel; nitrogen is sprayed on the copper wire heating section through the nitrogen conveying pipe to form a protection layer, oxygen near the copper wire heating section is fully removed, the anti-oxidation effect is improved, the quality of finished products is improved, the production cost is reduced, the safety degree is improved, then the copper wire is cooled in the cooling liquid groove, and finally residual cooling liquid on the surface of the copper wire is wiped through the wiping assembly. And residual cooling liquid on the surface of the copper wire is further blow-dried through the first blow-drying assembly, and the automation degree is improved.

Description

Technical Field

[0001] This utility model relates to the field of copper wire production technology, and in particular to an annealing device for a large drawing machine. Background Technology

[0002] During the production process, copper wire needs to be drawn by a large drawing machine, and the diameter of the copper wire gradually decreases. During the drawing process, stress is generated inside the copper wire. This stress will cause the copper wire to harden and become brittle. If the stress is not removed, the copper wire will break very easily, shortening its service life. In order to restore the plasticity of the copper wire and maintain good electrical properties, annealing treatment is performed immediately after the copper wire is drawn.

[0003] However, during the annealing process, the high-temperature copper wire is prone to oxidation upon contact with air. To prevent this oxidation, the traditional method is steam protection, where alcohol evaporates upon heating to form a vapor layer, isolating the air from the high-temperature copper wire. However, this consumes a large amount of alcohol, increasing production costs and resulting in relatively high alcohol concentrations in the surrounding air, posing a significant safety hazard. Furthermore, operators need to frequently replenish the alcohol container inside the equipment after shutdown, reducing production continuity, lowering automation levels, and increasing labor intensity. Currently, some equipment uses nitrogen to spray into the copper wire heating section, forming a nitrogen protective layer on the outside of the heating section to remove oxygen from the vicinity. However, this method can be incomplete, resulting in poor oxidation prevention and reduced finished product quality. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a large drawing machine annealing device that reduces production costs, improves automation, enhances safety, improves anti-oxidation effect, and improves finished product quality.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A large drawing machine annealing device includes a chassis, inside which are arranged a wiping assembly, a first drying assembly, a nitrogen delivery pipe, a preheating annealing wheel, and an upper annealing wheel. A coolant tank is located at the bottom of the chassis, and a lower annealing wheel, a first cooling guide wheel, and a second cooling guide wheel are arranged within the coolant tank. The first and second cooling guide wheels are respectively positioned on either side of the lower annealing wheel, and the lower annealing wheel is positioned below the upper annealing wheel. The nitrogen delivery pipe is positioned between the upper and lower annealing wheels, and a nitrogen inlet pipe is connected to its middle section. The wiping assembly is positioned diagonally above the first cooling guide wheel, and the first drying assembly is positioned diagonally above the wiping assembly.

[0007] Preferably, the first drying assembly includes a blower pipe and an air inlet pipe connected to the blower pipe. The blower pipe has an annular air guide groove inside its pipe body, and an inclined air outlet communicating with the annular air guide groove is provided on its inner side. Several inclined air outlets are arranged in a ring array. The air inlet pipe is fixed on the chassis and communicates with the annular air guide groove.

[0008] Preferably, the assembly also includes a first guide wheel and a second drying assembly with the same structure as the first drying assembly. The first guide wheel is located diagonally above the first drying assembly, and the second drying assembly is located diagonally above the first guide wheel.

[0009] Preferably, the wiping assembly includes a mounting frame, an upper cotton cloth layer, and a lower cotton cloth layer, which are clamped onto the mounting frame.

[0010] Preferably, the mounting bracket includes a tray, a pressure plate, a tab, and a protrusion. The tab and the tray are fixedly connected to the chassis. The pressure plate is hinged to the front side of the tab, and its lower side abuts against the upper cotton cloth layer. The lower side of the lower cotton cloth layer abuts against the tray. The protrusion is connected to the front side of the pressure plate, and its bottom is rotatably connected to a locking rod. The upper side of the locking rod abuts against the lower side of the tray.

[0011] Preferably, a first magnetic sheet is connected to the upper side of the locking rod, and a second magnetic sheet is connected to the lower side of the tray. The second magnetic sheet and the first magnetic sheet are attracted to each other through magnetic movement.

[0012] Preferably, the nitrogen delivery pipe has an annular gas guide groove inside the pipe body, and an outlet connected to the annular gas guide groove is provided on its inner side. Several outlets are arranged in a ring array. The nitrogen inlet pipe is fixed on the chassis and is connected to the annular gas guide groove.

[0013] Preferably, a second guide wheel is provided diagonally below the preheating annealing wheel, and an inlet guide wheel is provided on one side of the second guide wheel.

[0014] Preferably, a wire traction wheel is provided on the side of the upper annealing wheel away from the preheating annealing wheel, and a tensioning wheel is provided below the wire traction wheel.

[0015] The beneficial effects of this utility model are as follows:

[0016] This large drawing machine annealing device sequentially passes copper wire through a preheating annealing wheel, an upper annealing wheel, a nitrogen supply pipe, a lower annealing wheel, a coolant tank, a wiping assembly, and a first drying assembly. The copper wire is preheated between the preheating and upper annealing wheels, then heated between the upper and lower annealing wheels. Nitrogen gas is sprayed through the nitrogen supply pipe into the heated section of the copper wire to form a protective layer, effectively eliminating oxygen near the heated section, improving oxidation prevention, enhancing finished product quality, reducing production costs, and increasing safety. The copper wire is then cooled in the coolant tank. Finally, the wiping assembly wipes away any remaining coolant on the surface of the copper wire, and the first drying assembly further dries any remaining coolant, increasing the level of automation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the copper wire routing inside the annealing device of a large drawing machine.

[0018] Figure 2 This is a three-dimensional schematic diagram of the annealing device for a large drawing machine.

[0019] Figure 3 This is an exploded view of the wiping assembly.

[0020] Figure 4 This is a cross-sectional view of the wiping component.

[0021] Figure 5 This is a first cross-sectional view of the nitrogen inlet pipe and the nitrogen delivery pipe.

[0022] Figure 6 This is a second cross-sectional view of the nitrogen inlet pipe and the nitrogen delivery pipe.

[0023] Figure 7 This is a first cross-sectional view of the air inlet duct and the air blower duct.

[0024] Figure 8 This is a second sectional view of the air inlet duct and the air blower duct.

[0025] In the diagram: 1. Chassis; 2. Wiping assembly; 201. Mounting bracket; 2011. Tray; 2012. Pressure plate; 2013. Protrusion; 2014. Protrusion; 2015. Locking lever; 2016. First magnetic plate; 2017. Second magnetic plate; 202. Upper cotton cloth layer; 203. Lower cotton cloth layer; 3. First drying assembly; 301. Air duct; 302. Air inlet duct; 303. Annular air guide groove; 304. Inclined air outlet; 4. Nitrogen gas. 5. Conveying pipe; 6. Preheating annealing wheel; 7. Upper annealing wheel; 8. Coolant tank; 9. Lower annealing wheel; 10. First cooling guide wheel; 11. Second cooling guide wheel; 12. Nitrogen inlet pipe; 13. First guide wheel; 14. Second drying assembly; 15. Annular air guide groove; 16. Air outlet; 17. Second guide wheel; 18. Inlet guide wheel; 19. Outlet traction wheel; 20. Tensioning wheel; 21. Copper wire; 22. Inspection door; 23. Opening. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-8 This utility model provides a technical solution: a large drawing machine annealing device, including a machine housing 1, a wiping assembly 2, a first drying assembly 3, a nitrogen conveying pipe 4, a preheating annealing wheel 5 and an upper annealing wheel 6 inside the machine housing 1, and a coolant tank 7 at the bottom of the machine housing 1. The coolant tank 7 is provided with a lower annealing wheel 8, a first cooling guide wheel 9 and a second cooling guide wheel 10 inside the coolant tank 7. The first cooling guide wheel 9 and the second cooling guide wheel 10 are respectively arranged on both sides of the lower annealing wheel 8. The lower annealing wheel 8 is arranged below the upper annealing wheel 6. The nitrogen conveying pipe 4 is arranged between the upper annealing wheel 6 and the lower annealing wheel 8, and a nitrogen inlet pipe 11 is connected in the middle. The wiping assembly 2 is arranged diagonally above the first cooling guide wheel 9, and the first drying assembly 3 is arranged diagonally above the wiping assembly 2.

[0028] The copper wire 20 passes sequentially through the preheating annealing wheel 5, the upper annealing wheel 6, the nitrogen delivery pipe 4, the lower annealing wheel 8, the coolant tank 7, the wiping assembly 2, and the first drying assembly 3. The copper wire 20 is preheated between the preheating annealing wheel 5 and the upper annealing wheel 6, and then heated between the upper annealing wheel 6 and the lower annealing wheel 8. Nitrogen gas is sprayed through the nitrogen delivery pipe 4 into the heating section of the copper wire 20 to form a protective layer, effectively removing oxygen near the heating section, improving oxidation prevention, enhancing product quality, reducing production costs, and increasing safety. The copper wire 20 is then cooled in the coolant tank 7. Finally, the wiping assembly 2 wipes away any residual coolant on the surface of the copper wire 20, and the first drying assembly 3 further dries any remaining coolant on the surface of the copper wire 20, improving automation.

[0029] In order to facilitate the drying of residual coolant on the surface of copper wire 20, in this embodiment, preferably, the first drying component 3 includes a blower pipe 301 and an air inlet pipe 302 connected to the blower pipe 301. The blower pipe 301 has an annular air guide groove 303 inside the pipe, and an inclined air outlet 304 communicating with the annular air guide groove 303 is provided on its inner side. Several inclined air outlets 304 are arranged in an annular array. The air inlet pipe 302 is fixed on the chassis 1 and is connected to the annular air guide groove 303.

[0030] The purpose is to allow the copper wire 20 to pass through the air blower 301, and to introduce inert gas, which can be nitrogen, into the annular air guide groove 303 through the air inlet 302. This inert gas is then blown out evenly from several inclined air outlets 304, creating a blowing effect. The inclined air outlets 304 are inclined to one side of the wiping assembly 2, so the air is blown towards one side of the wiping assembly 2, causing the residual coolant on the surface of the copper wire 20 to be blown downwards, thus improving the drying effect.

[0031] To facilitate further drying of the residual coolant on the surface of the copper wire 20, this embodiment preferably includes a first guide wheel 12 and a second drying assembly 13 with the same structure as the first drying assembly 3. The first guide wheel 12 is disposed diagonally above the first drying assembly 3, and the second drying assembly 13 is disposed diagonally above the first guide wheel 12.

[0032] The purpose is to guide the copper wire 20 through the first guide wheel 12 after passing through the first drying assembly 3, and then through the second drying assembly 13. The blowing direction of the second drying assembly 13 is different from that of the first drying assembly 3, and the angle between the blowing direction of the second drying assembly 13 and the horizontal plane is greater than that between the blowing direction of the first drying assembly 3 and the horizontal plane. The second drying assembly 13 further dries the residual coolant on the surface of the copper wire 20, and blows the residual coolant on the surface of the copper wire 20 downwards at an angle, thereby improving the drying effect.

[0033] In order to facilitate the wiping of residual coolant on the surface of copper wire 20, in this embodiment, preferably, the wiping assembly 2 includes a mounting frame 201, an upper cotton cloth layer 202 and a lower cotton cloth layer 203, with the upper cotton cloth layer 202 and the lower cotton cloth layer 203 clamped on the mounting frame 201.

[0034] The purpose is to allow the copper wire 20 to pass between the upper cotton cloth layer 202 and the lower cotton cloth layer 203, and to wipe the residual coolant on the surface of the copper wire 20 through the upper cotton cloth layer 202 and the lower cotton cloth layer 203.

[0035] To facilitate the replacement of the upper cotton fabric layer 202 and the lower cotton fabric layer 203, in this embodiment, preferably, the mounting frame 201 includes a support plate 2011, a pressure plate 2012, a protrusion 2013, and a protrusion 2014. The protrusion 2013 and the support plate 2011 are both fixedly connected to the housing 1. The pressure plate 2012 is hinged to the front side of the protrusion 2013, and its lower side abuts against the upper cotton fabric layer 202. The lower side of the lower cotton fabric layer 203 abuts against the support plate 2011. The protrusion 2014 is connected to the front side of the pressure plate 2012, and its bottom is rotatably connected to a locking rod 2015. The upper side of the locking rod 2015 movably abuts against the lower side of the support plate 2011.

[0036] The purpose is to rotate the locking lever 2015 so that the upper side of the locking lever 2015 disengages from the support plate 2011, and then flip the pressure plate 2012 upward. At this time, the upper cotton cloth layer 202 and the lower cotton cloth layer 203 can be removed and replaced. After replacement, the pressure plate 2012 is flipped downward so that the pressure plate 2012 presses the new upper cotton cloth layer 202 and the lower cotton cloth layer 203 onto the upper side of the support plate 2011. Then, the locking lever 2015 is rotated so that the upper side of the locking lever 2015 abuts against the lower side of the support plate 2011 to form a locked state.

[0037] To improve structural stability, in this embodiment, preferably, a first magnetic sheet 2016 is connected to the upper side of the locking rod 2015, and a second magnetic sheet 2017 is connected to the lower side of the support plate 2011. The second magnetic sheet 2017 and the first magnetic sheet 2016 are attracted to each other by magnetic attraction.

[0038] The purpose is to improve the stability of the locking structure by magnetic attraction between the second magnetic piece 2017 and the first magnetic piece 2016 when the upper side of the locking rod 2015 abuts against the lower side of the support plate 2011 to form a locked state.

[0039] In order to facilitate the full removal of oxygen near the heating section of copper wire 20, in this embodiment, preferably, the nitrogen delivery pipe 4 is provided with an annular gas guide groove 14 inside the pipe, and an outlet 15 connected to the annular gas guide groove 14 is provided on its inner side. The outlet 15 is arranged in a ring array with several outlets. The nitrogen inlet pipe 11 is fixed on the chassis 1 and is connected to the annular gas guide groove 14.

[0040] The purpose is to allow the copper wire 20 to pass through the nitrogen delivery pipe 4, and to introduce nitrogen into the annular gas guide groove 14 through the nitrogen inlet pipe 11, so that the nitrogen is evenly discharged from several outlets 15, thereby allowing the nitrogen to flow and diffuse upward and downward in the nitrogen delivery pipe 4, and thus fill the entire inner cavity of the nitrogen delivery pipe 4, fully removing oxygen near the heating section of the copper wire 20 and improving the anti-oxidation effect.

[0041] In order to facilitate extending the preheating distance of the copper wire 20, in this embodiment, preferably, a second guide wheel 16 is provided diagonally below the preheating annealing wheel 5, and an inlet guide wheel 17 is provided on one side of the second guide wheel 16;

[0042] The purpose is to introduce copper wire 20 through the inlet guide wheel 17, and then the copper wire 20 passes through the preheating annealing wheel 5, the second guide wheel 16 and the upper annealing wheel 6 in sequence. By making the copper wire 20 bypass the second guide wheel 16, the preheating distance between the copper wire 20 and the preheating annealing wheel 5 and the upper annealing wheel 6 is extended.

[0043] In order to facilitate the lead-out of copper wire 20, in this embodiment, preferably, a wire traction wheel 18 is provided on the side of the upper annealing wheel 6 away from the preheating annealing wheel 5, and a tensioning wheel 19 is provided below the wire traction wheel 18.

[0044] The purpose is to guide the dried copper wire 20 out by passing it around the lead-out traction wheel 18, then around the tension wheel 19, and then around the lead-out traction wheel 18 again. The tension wheel 19 can be adjusted up and down to tension the copper wire 20, and the lead-out traction wheel 18 provides the traction force for the copper wire 20.

[0045] In order to facilitate the inspection and maintenance of the internal structure of the large drawing machine annealing device, in this embodiment, preferably, the front side of the housing 1 is hinged with an inspection door 21.

[0046] In order to facilitate the observation of the coolant level in the coolant tank 7, in this embodiment, preferably, the coolant tank 7 protrudes from one side of the chassis 1, and an opening 22 is provided above the protruding part. A cover plate is provided on the opening 22. The purpose is to allow the coolant level inside the coolant tank 7 to be observed through the opening 22 by removing the cover plate.

[0047] The working principle and usage process of this utility model are as follows: The copper wire 20 passes sequentially through the inlet guide wheel 17, the preheating annealing wheel 5, the second guide wheel 16, the upper annealing wheel 6, the nitrogen delivery pipe 4, the lower annealing wheel 8, the first cooling guide wheel 9, the second cooling guide wheel 10, the first cooling guide wheel 9, between the upper cotton cloth layer 202 and the lower cotton cloth layer 203, the air pipe 301 of the first drying assembly 3, the first guide wheel 12, the air pipe 301 of the second drying assembly 13, the outlet traction wheel 18, the tensioning wheel 19, and the outlet traction wheel 18.

[0048] The traction force on the copper wire 20 is provided by the outgoing traction wheel 18. The copper wire 20 is introduced through the incoming guide wheel 17. Then the copper wire 20 is preheated between the preheating annealing wheel 5 and the upper annealing wheel 6, and heated between the upper annealing wheel 6 and the lower annealing wheel 8. Nitrogen is introduced into the annular gas guide groove 14 through the nitrogen inlet pipe 11, so that the nitrogen is evenly discharged from several outlets 15. Then the nitrogen flows upward and downward in the nitrogen delivery pipe 4 and diffuses, thus filling the entire inner cavity of the nitrogen delivery pipe 4, fully removing oxygen near the heating section of the copper wire 20 and improving the anti-oxidation effect.

[0049] Then, the copper wire 20 is made to pass around the groove of the first cooling guide wheel 9 and then around the second cooling guide wheel 10. The copper wire 20 is then cooled by the coolant in the coolant tank 7. Then, the copper wire 20 is made to pass around the other groove of the first cooling guide wheel 9 and enter the position between the upper cotton cloth layer 202 and the lower cotton cloth layer 203 for wiping.

[0050] After wiping, the copper wire 20 passes through the air blower 301 and is introduced into the annular air guide groove 303 through the air inlet 302. The inert gas is then blown out evenly from several inclined air outlets 304, creating an inclined air blowing effect. This blows the residual coolant on the surface of the copper wire 20 downwards. The copper wire 20 is guided by the first guide wheel 12 and then passes through the second drying assembly 13 for secondary drying, improving the drying effect. The copper wire 20 then passes over the lead-out traction wheel 18 and then over the tensioning wheel 19 for tensioning. Finally, the copper wire 20 passes over the lead-out traction wheel 18 and is led out.

[0051] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A large drawing machine annealing device, comprising a machine housing (1), characterized in that: The chassis (1) is provided with a wiping assembly (2), a first drying assembly (3), a nitrogen delivery pipe (4), a preheating annealing wheel (5), and an upper annealing wheel (6), and a coolant tank (7) is provided at its bottom. The coolant tank (7) is provided with a lower annealing wheel (8), a first cooling guide wheel (9), and a second cooling guide wheel (10). The first cooling guide wheel (9) and the second cooling guide wheel (10) are respectively located on both sides of the lower annealing wheel (8). The lower annealing wheel (8) is located below the upper annealing wheel (6). The nitrogen delivery pipe (4) is located between the upper annealing wheel (6) and the lower annealing wheel (8), and a nitrogen inlet pipe (11) is connected in the middle of it. The wiping assembly (2) is located diagonally above the first cooling guide wheel (9), and the first drying assembly (3) is located diagonally above the wiping assembly (2).

2. The annealing apparatus for large drawing machines according to claim 1, characterized in that: The first drying assembly (3) includes a blower pipe (301) and an air inlet pipe (302) connected to the blower pipe (301). The blower pipe (301) has an annular air guide groove (303) inside its pipe body, and an inclined air outlet (304) communicating with the annular air guide groove (303) is provided on its inner side. Several inclined air outlets (304) are arranged in an annular array. The air inlet pipe (302) is fixed on the chassis (1) and communicates with the annular air guide groove (303).

3. The annealing apparatus for large drawing machines according to claim 2, characterized in that: It also includes a first guide wheel (12) and a second drying assembly (13) with the same structure as the first drying assembly (3). The first guide wheel (12) is located diagonally above the first drying assembly (3), and the second drying assembly (13) is located diagonally above the first guide wheel (12).

4. The annealing apparatus for large drawing machines according to claim 1, characterized in that: The wiping assembly (2) includes a mounting frame (201), an upper cotton cloth layer (202) and a lower cotton cloth layer (203), which are clamped on the mounting frame (201).

5. The annealing apparatus for large drawing machines according to claim 4, characterized in that: The mounting bracket (201) includes a support plate (2011), a pressure plate (2012), a protrusion (2013), and a protrusion (2014). The protrusion (2013) and the support plate (2011) are fixedly connected to the chassis (1). The pressure plate (2012) is hinged to the front side of the protrusion (2013), and its lower side abuts against the upper cotton cloth layer (202). The lower side of the lower cotton cloth layer (203) abuts against the support plate (2011). The protrusion (2014) is connected to the front side of the pressure plate (2012), and its bottom is rotatably connected to a locking rod (2015). The upper side of the locking rod (2015) movably abuts against the lower side of the support plate (2011).

6. The annealing apparatus for large drawing machines according to claim 5, characterized in that: The upper side of the locking rod (2015) is connected to a first magnetic piece (2016), and the lower side of the tray (2011) is connected to a second magnetic piece (2017). The second magnetic piece (2017) and the first magnetic piece (2016) are attracted to each other by magnetic attraction.

7. The annealing apparatus for large drawing machines according to claim 1, characterized in that: The nitrogen delivery pipe (4) has an annular gas guide groove (14) inside its pipe body, and an outlet (15) connected to the annular gas guide groove (14) is provided on its inner side. The outlet (15) is arranged in a ring array with several outlets. The nitrogen inlet pipe (11) is fixed on the chassis (1) and is connected to the annular gas guide groove (14).

8. The annealing apparatus for large drawing machines according to claim 1, characterized in that: A second guide wheel (16) is provided diagonally below the preheating annealing wheel (5), and an inlet guide wheel (17) is provided on one side of the second guide wheel (16).

9. The annealing apparatus for large drawing machines according to claim 1, characterized in that: The upper annealing wheel (6) is provided with a wire traction wheel (18) on the side away from the preheating annealing wheel (5), and a tensioning wheel (19) is provided below the wire traction wheel (18).

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