Gold bonding wire continuous casting furnace

Abstract

The invention relates to the technical field of continuous casting furnaces, in particular to a gold wire bonding continuous casting furnace which comprises a heating furnace, a cooling chamber and a winding chamber, a heating groove used for heating metal materials is formed in the heating furnace, a casting opening is formed in the bottom of the heating groove, a cooling pipe is arranged in the cooling chamber and divided into an outer pipe and an inner pipe, and the top end of the inner pipe communicates with the casting opening; a heat dissipation cavity is formed between the inner pipe and the outer pipe, an air cooling cavity is formed in the winding chamber, the air cooling cavity is installed at the bottom of the heat dissipation cavity and communicates with the inner pipe, a gas booster pump is fixedly installed on the outer wall of the air cooling cavity, a first heat dissipation pipe is arranged in the heat dissipation cavity, and the first heat dissipation pipe communicates with the gas booster pump and the air cooling cavity. According to the gold bonding wire cooling device, the air cooling cavity is formed, inert gas is used for being matched with the cooling pipe, the gold bonding wire is cooled through the cooling pipe and then air-cooled again, the cooling efficiency of the gold bonding wire is improved, and the cooling efficiency of the gold bonding wire is guaranteed under the condition that it is guaranteed that the gold bonding wire is clean and tidy.

Description

Technical Field

[0001] This invention relates to the field of continuous casting furnace technology, specifically to a bonding wire continuous casting furnace. Background Technology

[0002] Bonding wire is an alloy wire used as a connecting wire in integrated circuits, also known as ball bonding wire or lead wire. It is mainly divided into three types: γ-type, C-type, and FA-type, with the latter two used for high-speed bonding. During the production and processing of bonding wire, a continuous casting furnace is required to heat and process it, achieving a softening and mixing effect.

[0003] When processing bonding alloy wires in a continuous casting furnace, such as when processing bonding copper wires, the alloy is usually heated and melted first. Then, the molten alloy is extruded from the discharge port, and the extruded alloy is cooled. After that, the cooled bonding alloy wire is wound up by a winding device. After the winding is completed, the bonding alloy wire needs to be drawn into the required size by a wire drawing device.

[0004] When the alloy is extruded from the continuous casting furnace and cooled, liquid cooling is generally used, that is, the coolant is sprayed directly onto the alloy for cooling. This cooling method is relatively fast, but the disadvantage is that the coolant will adhere to the alloy. When coiling, the coolant on the alloy will drip onto the equipment, causing equipment contamination. In addition, a lot of coolant will accumulate on the coiled alloy, so the coiled alloy needs to be dried and cannot be quickly carried out to the next process.

[0005] To address the aforementioned problems, Chinese invention patent application number CN202410337931.4, entitled "A Continuous Casting Furnace for Bonding Wires," proposes a solution. This patent recovers some of the heat inside the continuous casting furnace and uses heating nozzles to heat the bonded wire in its coiled state, reducing the probability of coolant adhering to the surface of the bonded wire. This solves the problem of coolant adhesion to the bonded wire to a certain extent.

[0006] However, some bonding wires, such as high-quality bonding copper wires, require surface oxidation prevention during casting. Existing technologies typically employ vacuum continuous casting furnaces, filled with inert gases such as nitrogen and argon to protect the bonding wires from oxidation and ensure alloy quality.

[0007] In vacuum continuous casting furnaces, there are generally two methods for cooling the heated alloy. One method involves using anhydrous coolant to directly contact the alloy for cooling. This method is faster, but the anhydrous coolant has strong adhesion and is difficult to clean by hot air blowing. The other method uses a cooling pipe, with the inner wall of the pipe in contact with the heated alloy, while the coolant comes into contact with the pipe from the outside. Heat is transferred from the alloy to the coolant through the pipe, thus cooling the alloy. This method avoids direct contact between the coolant and the alloy, but its thermal conductivity is lower.

[0008] To address this, a bonding alloy wire continuous casting furnace is proposed. Summary of the Invention

[0009] The purpose of this invention is to provide a continuous casting furnace for bonding alloy wires, which avoids coolant adhering to the alloy while ensuring the cooling effect on the alloy.

[0010] To achieve the above objectives, the present invention provides the following technical solution:

[0011] A bonding wire continuous casting furnace includes a heating furnace, a cooling chamber, a winding chamber, and a control assembly. The cooling chamber is located directly below the heating furnace, and the winding chamber is located directly below the cooling chamber and is filled with inert gas. The heating furnace contains a heating tank for heating metal materials, with heating wires spirally arranged on the outside of the heating tank. A casting port is located at the bottom of the heating tank. The cooling chamber contains a cooling pipe, which is divided into an outer pipe and an inner pipe. The top of the inner pipe communicates with the casting port, and the bottoms of both the inner and outer pipes extend into the winding chamber. A sealed heat dissipation cavity for circulating coolant is provided between the inner and outer pipes. The outer pipe also has an inlet and an outlet. All openings are connected to the heat dissipation cavity. The winding chamber contains a winding assembly for winding the key alloy wire. An air-cooling cavity is located inside the winding chamber, installed at the bottom of the heat dissipation cavity and connected to the inner tube. A discharge port is located at the bottom of the air-cooling cavity, aligned with the inner tube. A gas pressurizing pump is fixedly installed on the outer wall of the air-cooling cavity. A first heat dissipation pipe is located inside the heat dissipation cavity, positioned on the side away from the cooling pipe axis. The first heat dissipation pipe runs along the cooling pipe axis and undergoes at least one bend. One end of the first heat dissipation pipe is connected to the output port of the gas pressurizing pump, and the other end communicates with the interior of the air-cooling cavity. An exhaust port is also provided on the air-cooling cavity. The control component is used to control the operation of the entire continuous casting furnace.

[0012] In use, the heating wire outside the heating tank is energized to form an eddy current, which heats and melts the alloy material inside the heating tank. Then, it is extruded through the casting port to form a bonding wire blank. The bonding wire blank then enters the inner tube of the cooling pipe. The inlet on the cooling chamber continuously delivers coolant from the outside to the heat dissipation chamber, and the coolant inside the heat dissipation chamber also continuously flows out of the heat dissipation chamber from the outlet. After the bonding wire blank comes into contact with the inner tube of the cooling pipe, it transfers heat to the coolant in the cooling chamber, and the coolant carries it out of the cooling chamber from the outlet, thus cooling the bonding wire blank.

[0013] Simultaneously, a gas pressurization pump extracts and pressurizes the inert gas inside the winding chamber, delivering it to the first heat dissipation pipe. Once inside the pipe, the inert gas indirectly contacts the coolant, which cools it. The inert gas is then introduced into the air-cooling chamber, where it contacts the rough blank of the bonding wire, further cooling it. Finally, the inert gas is discharged from the air-cooling chamber through the exhaust port.

[0014] After undergoing double cooling, the bonding wire blank enters the winding chamber, where the winding assembly winds and stores the bonding wire blank for convenient subsequent processing.

[0015] Inert gas is drawn from the winding chamber by a gas pressurization pump to air-cool the bonding wire. This ensures that the bonding wire does not come into contact with oxygen, while increasing the cooling rate of the bonding wire, thereby helping to improve the production efficiency of the bonding wire. During the cooling process, the bonding wire will not come into contact with the coolant, ensuring that the bonding wire is clean and tidy after winding, and ensuring that the bonding wire can be quickly moved to the next step of production.

[0016] Inert gas is drawn in by a gas pressurization pump and introduced into the first heat dissipation pipe. The inert gas is then cooled by the coolant, allowing for its reuse without the need for continuous supply of inert gas into the winding chamber, thus reducing production costs. Simultaneously, the first heat dissipation pipe is positioned away from the inner tube axis, helping to keep it away from the coolant that has already absorbed heat from the bonding wire, ensuring effective cooling of the inert gas. Furthermore, it ensures that the coolant is fully utilized, preventing it from failing to achieve its cooling effect due to its distance from the inner tube, thereby improving coolant utilization.

[0017] Preferably, a second heat dissipation pipe is further provided inside the heat dissipation cavity. The second heat dissipation pipe is located on the side of the heat dissipation cavity away from the axis of the cooling pipe, and is positioned opposite to the first heat dissipation pipe about the inner tube. One end of the second heat dissipation pipe is connected to the exhaust port, and the other end is connected to the air-cooling cavity. After the inert gas comes into contact with the bonding wire and absorbs its heat, the inert gas, carrying the absorbed heat, enters the interior of the second heat dissipation pipe. The inert gas then transfers the absorbed heat to the coolant through the second heat dissipation pipe, further improving the utilization rate of the coolant while preventing the inert gas in the winding chamber from heating up rapidly. This ensures that the inert gas can still cool the bonding wire when it re-enters the air-cooling cavity, further improving the cooling efficiency of the bonding wire.

[0018] Preferably, the inner wall of the inner tube has multiple venting grooves, which are evenly distributed circumferentially around the axis of the cooling tube. Each venting groove communicates with the air-cooling cavity. The inner wall of the cooling tube also has an annular cavity, with a semi-circular annular protrusion facing inwards towards the heat dissipation cavity. The tops of the venting grooves communicate with the annular cavity. The end of the second heat dissipation tube furthest from the exhaust port communicates with the air-cooling cavity through the annular cavity. The venting grooves and the annular cavity further increase the contact area between the inert gas and the bonding wire, helping to improve the heat dissipation efficiency of the inert gas on the bonding wire. Simultaneously, the protrusion of the annular cavity facing inwards towards the heat dissipation cavity also increases the temperature conduction effect between the inert gas and the coolant, further enhancing the heat dissipation effect of the inert gas on the bonding wire. In addition, the upward flow of inert gas into the annular cavity helps to concentrate heat in the annular cavity, allowing the coolant to further absorb the heat absorbed by the inert gas through the inner tube sidewall. This prevents the inert gas from carrying the absorbed heat back into the winding chamber quickly, thus preventing the winding chamber from heating up rapidly and ensuring that the inert gas has sufficient time to dissipate heat.

[0019] Preferably, a rotating ring is provided inside the air-cooling cavity. The rotating ring is rotatably installed at the bottom of the air-cooling cavity and is coaxial with the inner tube. Multiple power blades are provided on the top surface of the rotating ring. The power blades are evenly distributed circumferentially on the rotating ring with the axis of the rotating ring as the reference. The power blades are all perpendicular to the top surface of the rotating ring and all point to the axis of the rotating ring. The lower side of the rotating ring extends out of the air-cooling cavity. Multiple blades are fixedly installed on the lower side. The multiple blades are evenly distributed circumferentially on the side wall of the lower side of the rotating ring and all form an inclined angle with the bottom surface of the rotating ring. The end of the first heat dissipation pipe that communicates with the air-cooling cavity is horizontally oriented towards the tangent direction of the discharge port. When the airflow enters the air-cooling cavity from the first heat dissipation pipe, the airflow pushes the rotating ring to rotate and causes the blades to disturb the inert gas in the winding chamber to form a downward airflow. After the inert gas is drawn into the first heat dissipation pipe by the gas pressurization pump, it is ejected from the first heat dissipation pipe into the air-cooling cavity. The ejected airflow impacts the power blades inside the air-cooling cavity. The power blades, subjected to an impact force along the tangential direction of the rotating ring, drive the rotating ring to rotate. The blades on the rotating ring also rotate with the rotating ring. The rotation of the blades disturbs the inert gas inside the winding chamber. The inert gas inside the winding chamber forms an airflow that moves along the axis of the inner tube towards the bottom of the winding chamber. This allows the inert gas inside the winding chamber to circulate and contact the outer wall of the winding chamber, facilitating heat dissipation. When the inert gas re-enters the air-cooling cavity, there is a larger temperature difference between it and the bonding wire, which facilitates the cooling of the bonding wire. At the same time, the flowing airflow also has more contact with the bonding wire entering the winding chamber, which further facilitates the cooling of the bonding wire and improves the cooling effect.

[0020] Preferably, the bottom of the rotating ring has multiple circular grooves, which are evenly distributed around the bottom of the rotating ring with the axis of the rotating ring as the reference. Each circular groove is rotatably installed with a ball bearing inside. The bottom of the air-cooling cavity has an annular groove, which is aligned vertically with the circumference of the circular groove.

[0021] The ball bearings can reduce the friction experienced by the rotating ring during rotation, which helps to increase the rotation speed of the rotating ring, facilitates the circulation and heat dissipation of the inert gas, and thus improves the heat dissipation effect of the inert gas on the bonding wire.

[0022] Preferably, the exhaust port is positioned downwards and aligned with the circumference formed when the blade rotates. Aligning the exhaust port downwards with the blade allows the airflow exiting the port to further drive the blade's rotation, increasing its rotational speed and thus enhancing its turbulence effect. This directs the inert gas away from the air-cooling chamber, allowing it to dissipate heat further within the winding chamber, improving its heat dissipation effect and consequently enhancing the cooling effect on the bonding wire during inert gas recirculation.

[0023] Preferably, the power plate has a clearance groove on the side facing the inner tube axis, and each power plate has an arc-shaped scraper on its upper side. The scraper is made of smooth, wear-resistant rubber, and all the arc-shaped scrapers form a circle coaxial with the inner tube. The clearance groove helps to further reduce the contact area between the power plate and the bonding wire, avoiding excessive resistance that could affect the rotation of the rotating ring, ensuring the stability of the equipment operation, and guaranteeing the cooling effect on the bonding wire. At the same time, by using the arc-shaped scrapers to form a circle, the surface of the bonding wire can be scraped as it moves towards the winding chamber, facilitating the removal of irregular, fine metal particles formed on the surface of the bonding wire, which helps to improve the production quality of the bonding wire.

[0024] Preferably, the air-cooling cavity is detachably installed at the bottom of the heat dissipation cavity. After the scraper scrapes off the irregular protrusions on the surface of the bonding wire, they fall into the air-cooling cavity. Over time, this will affect the rotation of the rotating ring, and the scraper will wear down after prolonged use. Making the air-cooling cavity a detachable structure facilitates cleaning of the air-cooling cavity and easy replacement of the scraper, which helps to ensure the stability of equipment operation.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] 1. The bonding wire continuous casting furnace designed in this invention, by setting up an air-cooling chamber, uses inert gas in conjunction with cooling pipes, and after cooling the bonding wire in the cooling pipes, the bonding wire is air-cooled again, and the inert gas is cooled in advance by the coolant, thereby improving the cooling efficiency of the bonding wire, making up for the problem of insufficient cooling effect caused by the bonding wire not being in direct contact with the coolant, and ensuring the cooling efficiency of the bonding wire while ensuring the cleanliness of the bonding wire.

[0027] 2. The bonding wire continuous casting furnace designed in this invention is further equipped with a rotating ring, on which power plates and blades are installed. The power plates and blades are driven to rotate by the inert gas entering the air-cooling chamber. When the blades rotate, they form an airflow. The airflow formed by the inert gas further cools and dissipates heat on the bonding wire entering the winding chamber, and transfers the absorbed heat to the entire winding chamber. This facilitates the transfer of the temperature of the inert gas to the outside through the side wall of the winding chamber, which helps to ensure the cooling effect of the bonding wire when the inert gas re-enters the air-cooling chamber.

[0028] 3. The bonding wire continuous casting furnace designed in this invention is further provided with a ventilation groove and an annular cavity, and the annular cavity is connected to the second heat dissipation pipe. The ventilation groove and the annular cavity increase the contact area between the inert gas and the bonding wire. At the same time, the annular cavity is used to store the inert gas, so that the inert gas can transfer more heat to the coolant. When the inert gas flows back into the winding chamber, it is first dissipated through the second heat dissipation pipe. The heat absorbed by the inert gas is further transferred to the outside through the coolant, ensuring the heat dissipation effect of the inert gas on the bonding wire. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0030] Figure 2 This is a schematic diagram of the internal structure of the heating furnace, cooling chamber, and winding chamber in this invention;

[0031] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0032] Figure 4 For the present invention Figure 3 Enlarged view of point B in the middle;

[0033] Figure 5 This is a top perspective view of the cooling pipe in this invention;

[0034] Figure 6 This is a bottom perspective view of the cooling pipe in this invention;

[0035] Figure 7 This is a three-dimensional structural diagram of the rotating ring in this invention.

[0036] In the diagram: 1. Heating furnace; 2. Cooling chamber; 3. Rewinding chamber; 4. Control assembly; 5. Heating tank; 6. Heating wire; 7. Casting port; 8. Cooling pipe; 801. Outer pipe; 802. Inner pipe; 9. Heat dissipation chamber; 10. Air-cooled chamber; 11. Discharge port; 12. Gas pressurization pump; 13. First heat dissipation pipe; 14. Exhaust port; 15. Second heat dissipation pipe; 16. Ventilation groove; 17. Annular cavity; 18. Rotating ring; 19. Power plate; 20. Blade; 21. Circular groove; 22. Ball bearing; 23. Annular groove; 24. Clearance groove; 25. Scraper; 26. Liquid inlet; 27. Liquid outlet; 28. Rewinding assembly. Detailed Implementation

[0037] Please see Figures 1 to 7 This invention provides a bonding wire continuous casting furnace, the technical solution of which is as follows:

[0038] A bonding wire continuous casting furnace, reference Figure 1 , Figure 2 , Figure 3as well as Figure 5 and Figure 6 The continuous casting furnace includes a heating furnace 1, a cooling chamber 2, a winding chamber 3, and a control component 4. The control component 4 controls the operation of the entire continuous casting furnace. The cooling chamber 2 is located directly below the heating furnace 1, and the winding chamber 3 is located directly below the cooling chamber 2 and is filled with inert gas. The heating furnace 1 has a heating tank 5 for heating metal materials, with heating wires 6 spirally arranged on the outside of the heating tank 5. A casting port 7 is located at the bottom of the heating tank 5. The cooling chamber 2 has cooling pipes 8, which are divided into an outer pipe 801 and an inner pipe 802. The top of the inner pipe 802 communicates with the casting port 7. The bottoms of both the inner pipe 802 and the outer pipe 801 extend into the winding chamber 3. A sealed heat dissipation cavity 9 for circulating coolant is provided between the inner pipe 802 and the outer pipe 801. The outer pipe 801 also has an inlet 26 and an outlet 27, both of which communicate with the heat dissipation cavity 9. The winding chamber 3 has a coiling chamber for winding the key alloy. The winding assembly 28 for the yarn has a winding chamber 3 with an air-cooled cavity 10 inside. The air-cooled cavity 10 is detachably installed at the bottom of the heat dissipation cavity 9 and is connected to the inner tube 802. The bottom of the air-cooled cavity 10 has a discharge port 11, which is aligned with the inner tube 802. A gas pressurizing pump 12 is fixedly installed on the outer wall of the air-cooled cavity 10. The gas pressurizing pump 12 is a high-pressure micro piston air pump F16H. The heat dissipation cavity 9 has a first heat dissipation pipe 13 inside. The first heat dissipation pipe 13 is located on the side of the heat dissipation cavity 9 away from the axis of the cooling pipe 8. The first heat dissipation pipe 13 is arranged along the axis of the cooling pipe 8 and has been folded back at least once. One end of the first heat dissipation pipe 13 is connected to the output port of the gas pressurizing pump 12, and the other end is connected to the inside of the air-cooled cavity 10. The air-cooled cavity 10 is also provided with an exhaust hole 14.

[0039] refer to Figure 2 , Figure 3 and Figure 4 A rotating ring 18 is provided inside the air-cooling cavity 10. The rotating ring 18 is rotatably installed at the bottom of the air-cooling cavity 10 and is coaxial with the inner tube 802. Multiple power plates 19 are provided on the top surface of the rotating ring 18. The multiple power plates 19 are evenly distributed on the rotating ring 18 with the axis of the rotating ring 18 as the reference. The power plates 19 are all perpendicular to the top surface of the rotating ring 18 and all point to the axis of the rotating ring 18. The lower side of the rotating ring 18 extends out of the air-cooling cavity 10 from the discharge port 11. The inner diameter of the rotating ring 18 is the same as the diameter of the inner tube 802. Multiple blades 20 are fixedly installed on the lower side. The multiple blades 20 are evenly distributed on the side wall of the lower side of the rotating ring 18, and each blade forms an inclined angle with the bottom surface of the rotating ring 18. The end of the first heat dissipation pipe 13 that is connected to the air-cooling chamber 10 is horizontally oriented towards the tangent of the discharge port 11. When the airflow enters the air-cooling chamber 10 from the first heat dissipation pipe 13, the airflow pushes the rotating ring 18 to rotate and causes the blades 20 to disturb the inert gas in the winding chamber 3 to form a downward airflow.

[0040] refer to Figure 7The power plate 19 has a clearance groove 24 on the side facing the axis of the inner tube 802. Each power plate 19 has an arc-shaped scraper 25 on its upper side. The scraper 25 is made of smooth and wear-resistant rubber. All the arc-shaped scrapers 25 form a circle that is coaxial with the inner tube 802.

[0041] refer to Figure 4 The bottom of the rotating ring 18 has multiple circular grooves 21. The multiple circular grooves 21 are evenly distributed around the bottom of the rotating ring 18 with the axis of the rotating ring 18 as the reference. Each circular groove 21 has a ball bearing 22 rotatably installed inside. The bottom of the air-cooling cavity 10 has an annular groove 23. The annular groove 23 and the circumference of the circular groove 21 are aligned in the vertical direction.

[0042] refer to Figure 2 and Figure 3 The heat dissipation cavity 9 is also equipped with a second heat dissipation pipe 15. The second heat dissipation pipe 15 is located on the side of the heat dissipation cavity 9 away from the axis of the cooling pipe 8, and the second heat dissipation pipe 15 and the first heat dissipation pipe 13 are arranged opposite to each other about the inner tube 802. The second heat dissipation pipe 15 is also arranged along the axis of the cooling pipe 8 and has at least one bend. One end of the second heat dissipation pipe 15 is connected to the exhaust port 14. Multiple ventilation grooves 16 are formed on the inner wall of the inner tube 802. The multiple ventilation grooves 16 are evenly distributed on the inner wall of the inner tube 802 with the axis of the cooling pipe 8 as the reference. The ventilation grooves 16 are all connected to the air-cooled cavity 10. The inner wall of the cooling pipe 8 is also equipped with an annular cavity 17. The annular cavity 17 forms an annular protrusion with a semi-circular cross section facing into the heat dissipation cavity 9. The top of the ventilation grooves 16 are all connected to the annular cavity 17. The end of the second heat dissipation pipe 15 away from the exhaust port 14 is connected to the air-cooled cavity 10 through the annular cavity 17.

[0043] When using it, taking the bonding copper wire as an example, refer to... Figure 2 Coolant is continuously injected into the heat dissipation cavity 9 through the inlet 26, ensuring that the cavity is completely filled. Then, the outlet 27 is opened, allowing coolant to continuously enter and exit, facilitating external heat dissipation circulation. Alternatively, water can be used as the coolant, as its high specific heat capacity allows for better absorption of heat from the bonded copper wires, enabling rapid cooling.

[0044] After the device is started, refer to Figure 1 and Figure 2 First, open the door of the winding chamber 3. At this time, the gas pressurization pump 12 is not started yet. Let the heating furnace 1 process a small section of bonding copper wire. After the bonding copper wire is cooled by the cooling pipe 8, it enters the winding chamber 3 and is first wound onto the winding assembly 28. Then, close the door of the winding chamber 3 and use a vacuum generator to evacuate the inside of the winding chamber 3 to remove the oxygen. Then, stop evacuating and fill the winding chamber 3 with inert argon gas. After filling with argon gas, stop filling.

[0045] Subsequently, reference Figure 2 and Figure 3 The equipment is started, and the heating wire 6 continues to heat the heating tank 5. The alloy raw material inside the heating tank 5 is heated and then extruded in strips from the casting port 7. Simultaneously, the winding assembly 28 winds up the bonding copper wire. When the bonding copper wire reaches the cooling pipe 8, the outer wall of the bonding copper wire contacts the inner wall of the inner tube 802 of the cooling pipe 8, transferring heat to the inner wall of the inner tube 802. The inner wall of the inner tube 802 then transfers heat to the coolant, achieving contactless cooling of the bonding copper wire by the coolant. At the same time, the gas pressurization pump 12 outside the air-cooled chamber 10 begins to draw inert gas from inside the winding chamber 3, and the gas pressurization pump 12 delivers the inert gas into the first heat dissipation pipe 13. When the inert gas enters the first heat dissipation pipe 13, it first indirectly contacts the coolant through the side wall of the first heat dissipation pipe 13, thereby reducing the temperature of the inert gas. Subsequently, inert gas is horizontally ejected from the interface connecting the first heat dissipation pipe 13 and the air-cooling cavity 10 into the air-cooling cavity 10. The airflow formed by the inert gas impacts the surface of the power plate 19 and drives the power plate 19 to start rotating around the axis of the inner tube 802. When the power plate 19 rotates, it drives the rotating ring 18 and the blades 20 on the rotating ring 18 to rotate synchronously. After the blades 20 rotate, they disturb the remaining inert gas inside the winding chamber 3. Under the disturbance of the blades 20, the inert gas inside the winding chamber 3 forms a downward airflow. The downward airflow carries the inert gas towards the bottom of the winding chamber 3, so that this part of the airflow further dissipates heat from the bonding copper wires entering the winding chamber 3. The inert gas forming the airflow in the winding chamber 3 helps to transfer heat to the outer shell of the winding chamber 3, and dissipates the heat to the outside through the outer shell of the winding chamber 3, reducing the accumulation of heat inside the winding chamber 3 and ensuring the cooling effect on the bonding copper wires.

[0046] The inert gas inside the air-cooled cavity 10, after impacting the power plate 19, references... Figure 3 and Figure 6 The inert gas comes into contact with the bonding copper wires inside the air-cooled cavity 10 and absorbs the heat from the bonding copper wires. Afterward, the inert gas moves upward along the venting groove 16 and enters the annular cavity 17. Inside the annular cavity 17, the inert gas exchanges heat with the coolant again through the side wall of the annular cavity 17. Then, the inert gas inside the annular cavity 17 enters the second heat dissipation pipe 15. The inert gas, carrying heat, enters the second heat dissipation pipe 15 and completes heat exchange again, transferring heat to the coolant, thus achieving cooling before the inert gas re-enters the winding chamber 3. Subsequently, the gas inside the second heat dissipation pipe 15 is discharged downward through the exhaust hole 14 and blows the blades 20, further accelerating the rotation speed of the blades 20 and increasing the gas flow rate inside the winding chamber 3. This helps improve the heat dissipation effect of the inert gas, thereby ensuring the cooling effect of the inert gas on the bonding copper wires.

[0047] refer to Figure 7 When the bonding copper wire passes through the air-cooling chamber 10, a circle composed of multiple arc-shaped scrapers 25 adheres to the surface of the bonding copper wire. If there are tiny protrusions formed during the casting process on the bonding copper wire, these tiny protrusions can be scraped off by the scrapers 25 to ensure the smoothness of the surface of the bonding copper wire and to ensure the production quality of the bonding copper wire.

[0048] The specific embodiment of the present invention has been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the embodiments described above. For those skilled in the art, various changes, modifications, substitutions, and variations made to these embodiments without departing from the principles and ideas of the present invention should still fall within the protection scope of the present invention.

Claims

1. A bonding wire continuous casting furnace, comprising a heating furnace (1), a cooling chamber (2), a winding chamber (3), and a control assembly (4), wherein the cooling chamber (2) is located directly below the heating furnace (1), the winding chamber (3) is located directly below the cooling chamber (2), a heating groove (5) is provided inside the heating furnace (1), a heating wire (6) is spirally arranged outside the heating groove (5), a casting port (7) is provided at the bottom of the heating groove (5), a cooling pipe (8) is provided inside the cooling chamber (2), the cooling pipe (8) is divided into an outer pipe (801) and an inner pipe (802), the top end of the inner pipe (802) is connected to the casting port (7), the bottom ends of the inner pipe (802) and the outer pipe (801) both extend into the winding chamber (3), and a sealed heat dissipation cavity (9) for the flow of coolant is provided between the inner pipe (802) and the outer pipe (801), characterized in that, The winding chamber (3) is provided with an air-cooled chamber (10). The air-cooled chamber (10) is installed at the bottom of the heat dissipation chamber (9) and is connected to the inner tube (802). The bottom of the air-cooled chamber (10) is provided with a discharge port (11). The discharge port (11) is aligned with the inner tube (802). A gas pressurizing pump (12) is fixedly installed on the outer wall of the air-cooled chamber (10). A first heat dissipation pipe (13) is provided inside the heat dissipation chamber (9). The first heat dissipation pipe (13) is located on the side of the heat dissipation chamber (9) away from the axis of the cooling pipe (8). One end of the first heat dissipation pipe (13) is connected to the output port of the gas pressurizing pump (12), and the other end is connected to the inside of the air-cooled chamber (10). An exhaust hole (14) is also provided on the air-cooled chamber (10).

2. The bonding alloy wire continuous casting furnace according to claim 1, characterized in that, The heat dissipation cavity (9) is also provided with a second heat dissipation pipe (15). The second heat dissipation pipe (15) is located on the side of the heat dissipation cavity (9) away from the axis of the cooling pipe (8). The second heat dissipation pipe (15) and the first heat dissipation pipe (13) are arranged opposite to each other about the inner tube (802). One end of the second heat dissipation pipe (15) is connected to the exhaust hole (14), and the other end of the second heat dissipation pipe (15) is connected to the air-cooled cavity (10).

3. The bonding alloy wire continuous casting furnace according to claim 2, characterized in that, The inner wall of the inner tube (802) is provided with a plurality of ventilation grooves (16). The plurality of ventilation grooves (16) are evenly distributed on the inner wall of the inner tube (802) with the axis of the cooling tube (8) as the reference. The ventilation grooves (16) are all connected to the air-cooled cavity (10). The inner wall of the cooling tube (8) is also provided with an annular cavity (17). The annular cavity (17) forms an annular protrusion with a semi-circular cross section in the heat dissipation cavity (9). The top of the ventilation grooves (16) is connected to the annular cavity (17). The end of the second heat dissipation tube (15) away from the exhaust hole (14) is connected to the air-cooled cavity (10) through the annular cavity (17).

4. The bonding alloy wire continuous casting furnace according to claim 1, characterized in that, A rotating ring (18) is provided inside the air-cooled cavity (10). The rotating ring (18) is rotatably mounted on the bottom of the air-cooled cavity (10) and is coaxially arranged with the inner tube (802). A plurality of power plates (19) are provided on the top surface of the rotating ring (18). The plurality of power plates (19) are evenly distributed on the rotating ring (18) with the axis of the rotating ring (18) as the reference. The power plates (19) are all perpendicular to the top surface of the rotating ring (18) and all point to the axis of the rotating ring (18). The lower side of the rotating ring (18) extends Outside the air-cooled cavity (10), multiple blades (20) are fixedly installed on the lower side. The multiple blades (20) are evenly distributed on the side wall of the lower side of the rotating ring (18) and form an inclined angle with the bottom surface of the rotating ring (18). The end of the first heat dissipation pipe (13) that is connected to the air-cooled cavity (10) is horizontally oriented towards the tangent direction of the discharge port (11). When the airflow enters the air-cooled cavity (10) from the first heat dissipation pipe (13), the airflow pushes the rotating ring (18) to rotate and causes the blades (20) to disturb the inert gas in the winding chamber (3) to form a downward airflow.

5. A continuous casting furnace for bonding alloy wire according to claim 4, characterized in that, The bottom of the rotating ring (18) is provided with multiple circular grooves (21). The multiple circular grooves (21) are evenly distributed around the bottom of the rotating ring (18) with the axis of the rotating ring (18) as the reference. Each circular groove (21) is rotatably installed with a ball (22). The bottom of the air-cooling cavity (10) is provided with an annular groove (23). The annular groove (23) is aligned with the circumference of the circular groove (21) in the vertical direction.

6. The bonding alloy wire continuous casting furnace according to claim 4, characterized in that, The exhaust port (14) is positioned downwards and aligned with the circumference formed when the blade (20) rotates.

7. The bonding alloy wire continuous casting furnace according to claim 4, characterized in that, The power plate (19) has a clearance groove (24) on the side facing the axis of the inner tube (802). Each power plate (19) has an arc-shaped scraper (25) on its upper side. The scraper (25) is made of smooth and wear-resistant rubber. All the arc-shaped scrapers (25) form a circle coaxial with the inner tube (802). The air-cooling cavity (10) can be detachably installed at the bottom of the heat dissipation cavity (9).

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