Copper-clad aluminum wire cladding machine

Abstract

The invention discloses a copper-clad aluminum wire coating machine, and belongs to the technical field of copper-clad aluminum wire production, a transverse plate is provided with a polishing unit, the polishing unit comprises a protective cylinder, the left end and the right end of the protective cylinder are provided with a transmission assembly and a driven assembly respectively, the polishing assembly comprises a plurality of polishing strips, and an aluminum rod sequentially penetrates through the driven assembly, the polishing strips and the transmission assembly. The multiple polishing strips can be hinged to the outer wall of the aluminum rod in a surrounding mode, the outer wall of the aluminum rod is polished in the outward drawing process of the aluminum rod, the multiple polishing strips are adopted to surround the outer wall of the aluminum rod, full-circumference and dead-corner-free polishing of the outer wall of the aluminum rod can be achieved, it is guaranteed that the polishing precision of all parts of the outer wall of the aluminum rod is consistent, and the conditions that local polishing is not thorough and the surface roughness is not uniform are avoided; the polishing strip can rotate around the outer wall of the aluminum rod to adapt to the aluminum rods with different outer diameter specifications, the universality is high, the polishing assembly does not need to be replaced for the aluminum rods with different outer diameters, and the operation difficulty and the consumable cost are reduced.

Description

Technical Field

[0001] This invention relates to the field of copper-clad aluminum wire production technology, and more specifically, to a copper-clad aluminum wire coating machine. Background Technology

[0002] In the production and processing of copper-clad aluminum wire, the cleanliness and flatness of the aluminum rod, as the base material, directly affect the quality of the subsequent copper cladding. If the aluminum rod surface is covered with oxide layers, burrs, or dust and other impurities, it can easily lead to poor copper-aluminum bonding, resulting in defects such as copper layer peeling and flaking. Therefore, the outer wall of the aluminum rod needs to be polished before copper cladding. Currently, the industry generally uses integrated copper-clad aluminum wire cladding machines to achieve integrated operation of aluminum rod unwinding, straightening, polishing, and cladding processes. Among these, the polishing component is one of the core components that ensures the surface quality of the aluminum rod.

[0003] Existing copper-clad aluminum wire coating integrated machines typically employ a grinding component consisting of multiple grinding strips surrounding an aluminum rod. Abrasive particles adhere to the outer wall of each grinding strip, and grinding of the aluminum rod's outer wall is achieved through the relative rotation of the grinding strips and the aluminum rod. However, during long-term continuous grinding operations, a large amount of aluminum shavings, dust, and other impurities inevitably accumulate on the abrasive surface of the grinding strips. These impurities gradually clog the gaps between the abrasive particles, reducing their grinding performance and significantly decreasing grinding efficiency. Furthermore, they affect grinding precision, resulting in uneven surface roughness of the aluminum rod, which in turn impacts the product quality of subsequent copper-clad processes.

[0004] Regarding the cleaning of grinding strips, existing technologies typically involve disassembling the grinding strips for manual cleaning or directly replacing them. Manual cleaning requires disassembling the entire grinding assembly, removing the grinding strips, and wiping and cleaning them. This is not only cumbersome and time-consuming, severely impacting the overall processing efficiency of the equipment and increasing the labor intensity of operators, but also easily damages the abrasive on the outer wall of the grinding strip during the cleaning process, leading to a shortened lifespan. Directly replacing the grinding strips significantly increases consumable costs, which does not meet the production requirements of energy conservation, environmental protection, cost reduction, and efficiency improvement.

[0005] In addition, some integrated machines do not have a dedicated grinding strip cleaning mechanism. They only rely on the blowing component to simply blow the grinding area, which cannot effectively clean the fine aluminum shavings and dust attached to the outer wall of the grinding strip. The cleaning effect is poor and it is difficult to completely restore the grinding performance of the grinding strip. Moreover, the existing cleaning method cannot be linked with the equipment's own drive component and blowing component. Additional cleaning equipment is required, which increases the structural complexity and manufacturing cost of the equipment, and also occupies more installation space, resulting in poor adaptability.

[0006] Therefore, to address the problems of inconvenient cleaning of the grinding strips, poor cleaning effect, high cleaning cost, and impact on equipment processing efficiency and product quality in existing copper-clad aluminum wire coating machines, we propose a copper-clad aluminum wire coating machine to solve these issues. Summary of the Invention

[0007] The purpose of this invention is to provide a copper-clad aluminum wire coating machine to solve the above-mentioned problems.

[0008] To achieve the above objectives, the technical solution provided by the present invention is as follows: A copper-clad aluminum wire coating machine includes an unwinding unit on which an aluminum rod is wound. The aluminum rod passes through a straightening unit for straightening the aluminum rod. One end of the straightening unit is provided with a mounting frame. The mounting frame includes a support plate and a horizontal plate on its sidewall. A top plate is provided at the upper end of the support plate. A roller frame for adjusting the position of the aluminum rod is provided on the support plate. A grinding unit is installed on the horizontal plate. The grinding unit includes a protective cylinder. A transmission component and a driven component are respectively provided at the left and right ends of the protective cylinder. The grinding component includes multiple grinding strips. The aluminum rod passes through the driven component, the grinding strips and the transmission component in sequence. The multiple grinding strips can be hinged around the outer wall of the aluminum rod. During the outward pulling process of the aluminum rod, its outer wall is ground.

[0009] By using multiple grinding strips to surround the outer wall of the aluminum rod, full circumference grinding without dead angles can be achieved, ensuring consistent grinding precision across all parts of the aluminum rod's outer wall and avoiding incomplete grinding in certain areas or uneven surface roughness. The grinding strips can rotate around the outer wall of the aluminum rod, adapting to aluminum rods of different outer diameters, making them highly versatile. There is no need to change grinding components for aluminum rods of different outer diameters, reducing operational difficulty and consumable costs.

[0010] As a further improvement of the present invention, the transmission assembly includes a connecting ring rotatably connected to one end of the protective cylinder. A toothed ring is provided at the end of the connecting ring away from the protective cylinder, and a conical sleeve is provided at the other end of the connecting ring. A slot adapted to the aluminum rod is opened in the middle of the conical sleeve. A drive motor is installed on the outer wall of the protective cylinder. The output end of the drive motor is connected to the toothed ring through a gear. The drive motor is connected to the toothed ring through a gear, which has high transmission efficiency and stable power transmission. It can accurately control the rotation speed of the connecting ring and the conical sleeve, thereby adjusting the relative rotation speed between the grinding strip and the aluminum rod to adapt to different grinding needs.

[0011] As a further improvement of the present invention, the driven component includes an air jet cone, which also has a slot in the middle that is adapted to the aluminum rod. The slot in the middle of the air jet cone cooperates with the cone sleeve of the transmission component to form a bidirectional guiding and positioning of the aluminum rod, thereby further improving the stability of the aluminum rod during the grinding process, avoiding the aluminum rod from tilting or shaking, and ensuring grinding accuracy.

[0012] As a further improvement of the present invention, one end of the grinding strip movably passes through the conical sleeve and extends into its interior. A sealing head is provided at the end of the grinding strip located inside the conical sleeve. The other end of the grinding strip movably passes through the air jet cone and extends into its interior. A fixing ring is connected to the end of the grinding strip located inside the air jet cone via a connecting rod. An outer ring is fixedly connected inside the air jet cone. An inner ring is provided on the inner side of the outer ring. Sliding grooves are provided on opposite sides of the inner and outer rings. The fixing ring is located in the sliding grooves. The inner and outer rings can rotate relative to each other. The sealing head at one end of the grinding strip can seal the cavity inside the grinding strip to prevent inert gas leakage. During the process of the drive motor driving the conical sleeve to rotate, the grinding strip naturally wraps around the outer wall of the aluminum rod. The connecting effect of the grinding strip makes the air jet cone rotate synchronously, thereby driving the outer ring to rotate around the inner ring. This allows the grinding strip to rotate during the grinding process, avoiding the use of the same grinding surface for a long time, which would cause severe local wear of the grinding strip and further improve the grinding uniformity.

[0013] As a further improvement of the present invention, the connecting ring and the conical sleeve are connected by a linkage sleeve. The linkage sleeve includes connecting sleeves at both ends and multiple connecting rods arranged in the middle. The connecting ring is rotatably connected to the connecting sleeve through a limiting ring. The conical sleeve is fixedly connected to the connecting sleeve through a connecting block. The connecting rods in the middle can realize the synchronous rotation of the connecting ring and the conical sleeve, ensuring that the power of the transmission component can be accurately transmitted to the conical sleeve, thereby driving the grinding strip to rotate synchronously and improving the grinding effect. The connecting rods adopt a design of multiple rings, which can evenly distribute the force, improve the structural strength and stability of the linkage sleeve, avoid deformation and breakage of the linkage sleeve during long-term high-speed rotation, and extend the service life of the equipment.

[0014] As a further improvement of the present invention, the outer wall of the connecting ring is provided with a plurality of limiting holes at equal intervals in an annular shape, and the connecting sleeve corresponding to the position of the connecting ring is provided with a reserved hole corresponding to the position of the limiting hole. A bolt is provided in the reserved hole, and the connecting ring and the connecting sleeve can be fixed by the bolt passing through the reserved hole and the limiting hole, thereby fixing the position of the tapered sleeve.

[0015] As a further improvement of the present invention, a purging assembly is provided at one end of the protective cylinder near the jet cone. The purging assembly includes a gas collecting cylinder that penetrates the protective cylinder and is rotatably connected to the jet cone. The gas collecting cylinder is fixedly connected to the protective cylinder. An air pump installed on the top plate is connected to the upper end of the gas collecting cylinder through an air guide pipe. An external gas storage tank is connected to the air pump inlet end through an air inlet pipe. The gas storage tank is filled with inert gas. The inner ring is connected to the inner wall of the gas collecting cylinder through a fixing rod. The gas collecting cylinder penetrates the protective cylinder and is rotatably connected to the jet cone, which can realize the stable delivery of inert gas without affecting the rotation of the jet cone with the grinding strip, ensuring that the inert gas can be continuously and evenly ejected from the air hole of the jet cone.

[0016] As a further improvement of the present invention, the outer wall of the jet cone is provided with multiple air holes, the jet direction of which is towards the grinding surface. The arrangement of the air holes towards the grinding surface allows the inert gas to be directly sprayed onto the grinding area, accurately covering the surface of the aluminum rod and the grinding strip. This not only blows away the aluminum chips generated during grinding in a timely manner, preventing aluminum chips from adhering, but also quickly forms a protective gas film on the grinding surface of the aluminum rod, improving the protection effect and purging efficiency. The multiple air holes are arranged in a ring at equal intervals, which can realize the full circumference spraying of inert gas, ensuring that all parts of the aluminum rod surface can be effectively protected and purged, avoiding the problem of inadequate local protection and aluminum chip accumulation.

[0017] As a further improvement of the present invention, a discharge trough is provided at the lower end of the protective cylinder. The discharge trough is arranged at an angle, and a collection box is provided at the lower end of the discharge trough. A suction machine is connected to the lower end of the collection box, and an external solid-gas separation device is connected to the air outlet of the suction machine. The centrifugal force generated by the rotation, combined with the blowing of the airflow, can more effectively make the aluminum chips slide quickly from the discharge trough into the collection box. The angled design improves the dust collection efficiency. The negative pressure generated by the suction machine accelerates the dust collection speed. At the same time, the collected dust can be transported to the external solid-gas separation device to realize the centralized treatment and recycling of dust and reduce resource waste.

[0018] As a further improvement of the present invention, the grinding strip has a cavity inside, which is filled with inert gas. The grinding strip is made of flexible material and abrasive is adhered to its outer wall. The high temperature generated during long-term grinding causes the grinding strip to loosen. The expansion of the inert gas compensates for the gap, ensuring that the grinding strip can always be tightly attached to the outer wall of the aluminum rod. The grinding strip is made of flexible material, which can better fit the outer wall of the aluminum rod and adapt to the slight unevenness of the aluminum rod surface, ensuring uniform grinding. At the same time, it avoids rigid contact that may cause scratches to the surface of the aluminum rod, thus protecting the surface quality of the aluminum rod.

[0019] Compared with the prior art, the advantages of this invention are: (1) The present invention uses multiple grinding strips to surround the outer wall of the aluminum rod, which can achieve full circumference grinding of the outer wall of the aluminum rod without dead angles, ensuring that the grinding accuracy of each part of the outer wall of the aluminum rod is consistent, and avoiding the situation of incomplete grinding in some areas and uneven surface roughness.

[0020] (2) The connection of the grinding strip makes the air cone rotate synchronously, thereby driving the outer ring to rotate around the inner ring, which in turn allows the grinding strip to rotate during the grinding process, avoiding the use of the same grinding surface for a long time, which would cause severe local wear of the grinding strip and further improve the uniformity of grinding.

[0021] (3) The present invention utilizes inert gas to directly spray onto the grinding area to blow away the aluminum rod surface and grinding strip. This not only blows away the aluminum shavings generated during grinding in a timely manner, preventing the aluminum shavings from adhering, but also quickly forms a protective gas film on the grinding surface of the aluminum rod, improving the protection effect and blowing efficiency, ensuring that all parts of the aluminum rod surface can be effectively protected and blown away, and avoiding the problem of inadequate local protection and aluminum shavings accumulation. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure at the junction of the grinding unit and the mounting bracket of the present invention; Figure 3 This is a schematic diagram of the grinding unit structure of the present invention; Figure 4 This is an exploded view of the grinding unit of the present invention; Figure 5 This is a partial cross-sectional structural diagram of the junction of the transmission component, the grinding component, and the driven component of the present invention. Figure 6 This is a partial cross-sectional structural diagram of the transmission component of the present invention; Figure 7 This is a partial cross-sectional structural diagram of the driven component of the present invention; Figure 8 This is a schematic diagram of the grinding component structure of the present invention; Figure 9 This is a partial cross-sectional structural diagram of the grinding unit of the present invention in the working state; Figure 10 This is a partial cross-sectional structural diagram of the polishing unit of the present invention in a self-cleaning state.

[0023] Explanation of the labels in the diagram: 1. Unwinding unit; 2. Straightening unit; 3. Mounting frame; 31. Support plate; 32. Horizontal plate; 33. Top plate; 34. Roller frame; 4. Grinding unit; 41. Protective cylinder; 411. Collection box; 42. Transmission assembly; 421. Conical sleeve; 422. Connecting ring; 423. Limiting hole; 424. Toothed ring; 43. Grinding assembly; 431. Grinding strip; 432. Sealing head; 433. Connecting rod; 434. Fixing ring; 435. Outer ring; 436. Inner ring; 44. Driven assembly; 441. Air cone; 442. Air hole; 45. Drive motor; 46. Linkage sleeve; 461. Connecting sleeve; 462. Connecting rod; 463. Reserved hole; 5. Blowing assembly; 51. Air collection cylinder; 52. Air pump; 6. Suction machine. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0025] Example 1: Please see Figure 1-5 A copper-clad aluminum wire coating machine includes an unwinding unit 1 on which an aluminum rod is wound. The aluminum rod passes through a straightening unit 2 for straightening the aluminum rod. One end of the straightening unit 2 is provided with a mounting frame 3. The mounting frame 3 includes a support plate 31 and a horizontal plate 32 on its side wall. A top plate 33 is provided at the upper end of the support plate 31. A roller frame 422 for adjusting the position of the aluminum rod is provided on the support plate 31. A grinding unit 4 is installed on the horizontal plate 32. The grinding unit 4 includes a protective cylinder 41. A transmission component 42 and a driven component 44 are respectively provided at the left and right ends of the protective cylinder 41. The grinding component 43 includes multiple grinding strips 431. The aluminum rod passes through the driven component 44, the grinding strips 431 and the transmission component 42 in sequence. The multiple grinding strips 431 can be hinged around the outer wall of the aluminum rod. During the outward pulling process of the aluminum rod, its outer wall is ground.

[0026] By using multiple grinding strips 431 to surround the outer wall of the aluminum rod, full circumference grinding without dead angles can be achieved, ensuring consistent grinding precision across all parts of the aluminum rod's outer wall and avoiding incomplete grinding in certain areas or uneven surface roughness. The grinding strips 431 can rotate around the outer wall of the aluminum rod, adapting to aluminum rods of different outer diameters, making them highly versatile. There is no need to replace the grinding components 43 for aluminum rods of different outer diameters, reducing operational difficulty and consumable costs.

[0027] Please see Figure 6 The transmission assembly 42 includes a connecting ring 422 rotatably connected to one end of the protective cylinder 41. A toothed ring 424 is provided at the end of the connecting ring 422 away from the protective cylinder 41, and a tapered sleeve 421 is provided at the other end of the connecting ring 422. A slot adapted to the aluminum rod is opened in the middle of the tapered sleeve 421. A drive motor 45 is installed on the outer wall of the protective cylinder 41, and the output end of the drive motor 45 is connected to the toothed ring 424 through a gear.

[0028] The drive motor 45 is connected to the gear ring 424 through gear meshing, which has high transmission efficiency and stable power transmission. It can accurately control the rotation speed of the connecting ring 422 and the tapered sleeve 421, thereby adjusting the relative rotation speed between the grinding strip 431 and the aluminum rod, and adapting to different grinding requirements such as aluminum rod surface processing with different roughness requirements.

[0029] Please see Figure 7 The driven component 44 includes a jet cone 441, which also has a slot in the middle that is adapted to the aluminum rod.

[0030] The slot in the middle of the jet cone 441 cooperates with the cone sleeve 421 of the transmission assembly 42 to form a two-way guide and positioning for the aluminum rod, further improving the stability of the aluminum rod during the grinding process, preventing the aluminum rod from tilting or shaking, and ensuring grinding accuracy.

[0031] Example 2: Please see Figure 5-8 One end of the grinding strip 431 movably passes through the conical sleeve 421 and extends into it. A sealing head 432 is provided at the end of the grinding strip 431 located inside the conical sleeve 421. The other end of the grinding strip 431 movably passes through the air jet cone 441 and extends into it. A fixing ring 434 is connected to the end of the grinding strip 431 located inside the air jet cone 441 via a connecting rod 433. An outer ring 435 is fixedly connected inside the air jet cone 441. An inner ring 436 is provided on the inner side of the outer ring 435. Sliding grooves are provided on opposite sides of the inner ring 436 and the outer ring 435. The fixing ring 434 is located in the sliding groove. The inner ring 436 and the outer ring 435 can rotate relative to each other.

[0032] The sealing head 432 at one end of the grinding strip 431 can seal the cavity inside the grinding strip 431 to prevent inert gas leakage. When the drive motor 45 drives the cone sleeve 421 to rotate, the grinding strip 431 naturally wraps around the outer wall of the aluminum rod. The connecting effect of the grinding strip 431 makes the air jet cone 441 rotate synchronously, thereby driving the outer ring 435 to rotate around the inner ring 436. This allows the grinding strip 431 to rotate during the grinding process, avoiding the use of the same grinding surface for a long time, which would cause severe local wear of the grinding strip 431. At the same time, the grinding strip 431 rotates around the outer wall of the aluminum rod during the grinding process, further improving the uniformity of grinding.

[0033] Please see Figure 6 The connecting ring 422 and the tapered sleeve 421 are connected by a linkage sleeve 46. The linkage sleeve 46 includes connecting sleeves 461 at both ends and multiple connecting rods 462 arranged in the middle. The connecting ring 422 is rotatably connected to the connecting sleeve 461 through a limiting ring, and the tapered sleeve 421 is fixedly connected to the connecting sleeve 461 through a connecting block.

[0034] The connecting rod 462 in the middle enables the synchronous rotation of the connecting ring 422 and the tapered sleeve 421, ensuring that the power of the transmission component 42 can be accurately transmitted to the tapered sleeve 421, thereby driving the grinding strip 431 to rotate synchronously and improving the grinding effect. The connecting rod 462 adopts a design with multiple rings, which can evenly distribute the force, improve the structural strength and stability of the linkage sleeve 46, avoid deformation and breakage of the linkage sleeve 46 during long-term high-speed rotation, and extend the service life of the equipment. The structure is simple and easy to assemble, which can reduce the assembly difficulty and manufacturing cost of the equipment.

[0035] Please see Figure 6The outer wall of the connecting ring 422 is provided with a plurality of limiting holes 423 at equal intervals. The connecting sleeve 461 corresponding to the position of the connecting ring 422 is provided with a reserved hole 463 corresponding to the position of the limiting hole 423, and a bolt is provided in the reserved hole 463.

[0036] By using bolts passing through the reserved hole 463 and the limiting hole 423, the connecting ring 422 and the connecting sleeve 461 can be fixed, thereby fixing the position of the tapered sleeve 421. When it is necessary to adjust the fit between the grinding strip 431 and the aluminum rod, the bolts can be loosened to adjust the relative position of the connecting ring 422 and the connecting sleeve 461, thereby adjusting the position of the tapered sleeve 421, so as to achieve precise adjustment of the fit of the grinding strip 431 and adapt to aluminum rods of different outer diameters or different grinding needs.

[0037] Example 3: Please see Figure 2 and Figure 7 A purging assembly 5 is provided at one end of the protective cylinder 41 near the jet cone 441. The purging assembly 5 includes a gas collecting cylinder 51 that passes through the protective cylinder 41 and is rotatably connected to the jet cone 441. The gas collecting cylinder 51 is fixedly connected to the protective cylinder 41. An air pump 52 installed on the top plate 33 is connected to the upper end of the gas collecting cylinder 51 through an air guide pipe. An external gas storage tank is connected to the air inlet end of the air pump 52 through an air inlet pipe. The gas storage tank is filled with inert gas. The inner ring 436 is connected to the inner wall of the gas collecting cylinder 51 through a fixing rod.

[0038] The gas collecting cylinder 51 passes through the protective cylinder 41 and rotates in connection with the jet cone 441, enabling stable delivery of inert gas without affecting the rotation of the jet cone 441 with the grinding strip 431. This ensures that the inert gas can be continuously and evenly ejected from the air holes 442 of the jet cone 441. Inert gases such as nitrogen and argon can form a protective gas film on the surface of the aluminum rod, preventing oxidation of the aluminum rod during grinding by contact with oxygen in the air. This avoids the formation of an oxide layer on the surface of the aluminum rod, ensuring the cleanliness and activity of the aluminum rod surface, providing a good bonding foundation for the subsequent copper cladding process, improving the copper-aluminum bonding strength, and preventing the copper layer from peeling off. The inert gas can also blow away the aluminum chips generated during grinding in a timely manner, preventing the accumulation of aluminum chips.

[0039] The outer wall of the jet cone 441 has multiple air holes 442, with the jet direction of the air holes 442 facing the grinding surface. The arrangement of the air holes 442 towards the grinding surface allows the inert gas to be directly sprayed onto the grinding area, accurately covering the surface of the aluminum rod and the grinding strip 431. This not only blows away the aluminum chips generated during grinding in a timely manner, preventing aluminum chips from adhering, but also quickly forms a protective gas film on the grinding surface of the aluminum rod, improving the protection effect and blowing efficiency. The multiple air holes 442 are arranged in a ring at equal intervals, which can realize the full circumference spraying of inert gas, ensuring that all parts of the aluminum rod surface can be effectively protected and blown away, avoiding the problem of inadequate local protection and aluminum chip accumulation.

[0040] Please see Figure 4 The lower end of the protective cylinder 41 is provided with a discharge chute, which is arranged at an angle. A collection box 411 is set at the lower end of the discharge chute, and a suction machine 6 is connected to the lower end of the collection box 411. An external solid-gas separation device is connected to the air outlet of the suction machine 6. The centrifugal force generated by the rotation, combined with the blowing of the airflow, can more effectively make the aluminum chips slide quickly from the discharge chute into the collection box 411. The angled design improves the dust collection efficiency. The suction machine 6 generates negative pressure to accelerate the dust collection speed. At the same time, the collected dust can be transported to the external solid-gas separation device to realize the centralized treatment and recycling of dust and reduce resource waste.

[0041] The grinding strip 431 has an internal cavity filled with inert gas. Made of flexible material, the outer wall of the grinding strip 431 is coated with abrasive. During prolonged grinding, the high temperatures cause the grinding strip 431 to loosen. The expansion of the inert gas compensates for this gap, ensuring the grinding strip 431 remains tightly attached to the outer wall of the aluminum rod. The flexible material allows for better conformity to the aluminum rod's surface, adapting to slight unevenness and ensuring uniform grinding. It also avoids scratches caused by rigid contact, protecting the surface quality of the aluminum rod. The abrasive coating on the outer wall of the grinding strip 431 allows for selection of different grit sizes to quickly remove oxide layers, burrs, and other defects from the aluminum rod surface, providing a smooth and clean surface for subsequent copper cladding processes.

[0042] Working principle: 1. Boltless fixing, relying solely on grinding bar drive mode This mode is suitable for conventional processing scenarios where the outer diameter of the aluminum rod fluctuates little and the grinding precision requirement is moderate. During operation, there is no need to pass the bolt through the reserved hole 463 and the limiting hole 423, so that the connecting ring 422 and the connecting sleeve 461 can be rotated relative to each other. Start the drive motor 45, and the drive motor 45 drives the connecting ring 422 to rotate through the gear meshing with the gear ring 424. The connecting ring 422 drives the connecting sleeve 461 and the conical sleeve 421 to rotate synchronously through the connecting rod 462 of the linkage sleeve 46. When the conical sleeve 421 rotates, it drives the grinding strip 431 that runs through it to rotate synchronously. During the rotation, the grinding strip 431 naturally wraps around the outer wall of the aluminum rod. The friction between the grinding strip 431 and the aluminum rod is used to realize the transmission. At the same time, the aluminum rod is pulled outward, and the grinding strip 431 performs full circumferential grinding on the outer wall of the aluminum rod. At this time, the grinding strip 431 drives the air jet cone 441 to rotate synchronously. The outer ring 435 inside the air jet cone 441 rotates around the inner ring 436, realizing the rotation of the grinding strip 431 and ensuring the uniformity of grinding.

[0043] No bolts are required for fixing, eliminating the steps of bolt disassembly and repositioning, making operation convenient and allowing for quick start-up of processing, thus improving efficiency in conventional processing scenarios. Relying on the transmission action of the grinding strip 431 itself, it adapts to slight fluctuations in the outer diameter of the aluminum rod. The grinding strip 431 can adaptively adjust the winding tightness to avoid grinding deviations caused by slight changes in the outer diameter of the aluminum rod. It reduces the frequent disassembly and reassembly of bolts, extending the service life of bolts, limiting holes 423 and reserved holes 463, and reducing maintenance costs. The transmission process is smooth and without rigid impact, which can protect the grinding strip 431 and the surface of the aluminum rod, preventing scratches on the aluminum rod.

[0044] II. Bolt-fixed transmission mode Please see Figure 9 This mode is suitable for precision machining scenarios where the outer diameter of the aluminum rod is fixed, the grinding accuracy is required, and a stable fit is needed. During operation, adjust the relative positions of the connecting ring 422 and the connecting sleeve 461 according to the outer diameter of the aluminum rod and the grinding requirements, so that the tapered sleeve 421 drives the grinding strip 431 to achieve a suitable fit with the outer wall of the aluminum rod; pass the bolt through the reserved hole 463 on the connecting sleeve 461 and the limiting hole 423 on the connecting ring 422, and tighten the bolt to fix the connecting ring 422 and the connecting sleeve 461, thereby fixing the position of the tapered sleeve 421 and ensuring a stable fit between the grinding strip 431 and the aluminum rod; start the drive motor 45, which drives the connecting ring 422 to rotate. Since the connecting ring 422 and the connecting sleeve 461 are fixed, the connecting sleeve 461 drives the tapered sleeve 421 to rotate synchronously. The tapered sleeve 421 drives the grinding strip 431 to rotate around the outer wall of the aluminum rod, while the aluminum rod is pulled outward, completing the precision grinding of the outer wall of the aluminum rod; the air jet cone 441 rotates synchronously with the grinding strip 431, realizing the rotation of the grinding strip 431 and further improving the uniformity of grinding.

[0045] Bolt fixing ensures synchronous rotation of the connecting ring 422, connecting sleeve 461, and tapered sleeve 421, resulting in precise power transmission without slippage or offset. This ensures stable contact between the grinding strip 431 and the aluminum rod, thereby improving grinding accuracy and meeting precision machining requirements. The fixed tapered sleeve 421 provides a more stable guide for the aluminum rod, and in conjunction with the bidirectional guide of the air jet cone 441, further improves the coaxiality of the aluminum rod during grinding, preventing grinding deviations caused by rod offset. It is suitable for batch processing of aluminum rods with fixed outer diameters, ensuring consistent grinding accuracy across batches and improving product qualification rates. The bolt fixing structure is reliable and can withstand the impact of high-speed rotation, ensuring long-term stable operation of the equipment and making it suitable for continuous processing over extended periods.

[0046] III. Self-cleaning mode of the polishing strip Please see Figure 10This mode is suitable for self-cleaning when the grinding strip 431 has been used for a period of time and the outer wall abrasive is covered with aluminum shavings and dust, resulting in a decrease in grinding efficiency. It eliminates the need to disassemble the grinding strip 431, saving cleaning time. During operation, adjust the relative positions of the connecting ring 422 and the connecting sleeve 461 according to the installation position of the grinding strip 431, ensuring the grinding strip 431 is in a relaxed and evenly distributed state. Pass the bolts through the pre-drilled holes 463 and the limiting holes 423, and tighten the bolts to fix the connecting ring 422 and the connecting sleeve 461, thereby fixing the position of the tapered sleeve 421 and limiting the radial displacement of the grinding strip 431. Start the drive motor 45 and the blowing assembly 5. The drive motor 45 drives the connecting ring 422, the connecting sleeve 461, and the tapered sleeve 421 to rotate synchronously. The tapered sleeve 421 drives the grinding strip 431 to rotate around its own axis. During high-speed rotation, the grinding strip 431 uses its own centrifugal force to throw off aluminum chips and dust adhering to its outer wall. At the same time, the air pump 52 of the blowing assembly 5 delivers inert gas to the air collection cylinder 51, and then sprays it onto the surface of the grinding strip 431 through the air hole 442 of the air jet cone 441, blowing away the fine aluminum chips and dust adhering to the outer wall of the grinding strip 431, thus achieving self-cleaning of the grinding strip 431. The aluminum chips and dust generated during cleaning fall from the discharge chute at the lower end of the protective cylinder 41 into the collection box 411 under the action of centrifugal force and airflow, and are then transported by the suction machine 6 to the external solid-gas separation device for processing.

[0047] Self-cleaning can be completed without disassembling the grinding strip 431, making operation convenient, saving cleaning and disassembly time, and improving equipment maintenance efficiency. Utilizing the centrifugal force generated by the rotation of the grinding strip 431 in conjunction with inert gas blowing, the cleaning effect is excellent, thoroughly removing aluminum shavings and dust adhering to the outer wall of the grinding strip 431, restoring the grinding efficiency of the grinding strip 431, extending the service life of the grinding strip 431, and reducing consumable costs. During the cleaning process, the inert gas protects the abrasive on the outer wall of the grinding strip 431, preventing abrasive oxidation and shedding, ensuring the grinding effect after cleaning. The aluminum shavings and dust generated during cleaning can be collected and treated centrally to prevent dust diffusion, meeting environmental protection requirements. No additional cleaning equipment is required; cleaning can be completed using the equipment's own drive and blowing components, simplifying the cleaning process and reducing maintenance costs.

[0048] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0049] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A copper-clad aluminum wire coating machine, comprising an unwinding unit (1) on which an aluminum rod is wound, the aluminum rod passing through a straightening unit (2) for straightening the aluminum rod, wherein a mounting frame (3) is provided at one end of the straightening unit (2), the mounting frame (3) comprising a support plate (31) and a horizontal plate (32) provided on its side wall, a top plate (33) provided at the upper end of the support plate (31), and a roller frame (422) for adjusting the position of the aluminum rod provided on the support plate (31), characterized in that: A grinding unit (4) is installed on the horizontal plate (32). The grinding unit (4) includes a protective cylinder (41). A transmission component (42) and a driven component (44) are respectively provided at the left and right ends of the protective cylinder (41). The transmission assembly (42) and the driven assembly (44) are connected by a grinding assembly (43). The grinding assembly (43) includes multiple grinding strips (431). The aluminum rod passes through the driven assembly (44), the grinding strips (431) and the transmission assembly (42) in sequence. The multiple grinding strips (431) can be hinged around the outer wall of the aluminum rod. The outer wall of the aluminum rod is ground during the outward pulling process.

2. The copper-clad aluminum wire coating machine according to claim 1, characterized in that: The transmission assembly (42) includes a connecting ring (422) rotatably connected to one end of the protective cylinder (41). A toothed ring (424) is provided at one end of the connecting ring (422) away from the protective cylinder (41), and a tapered sleeve (421) is provided at the other end of the connecting ring (422). A hole groove adapted to the aluminum rod is opened in the middle of the tapered sleeve (421). A drive motor (45) is installed on the outer wall of the protective cylinder (41), and the output end of the drive motor (45) is meshed with the toothed ring (424) through a gear.

3. The copper-clad aluminum wire coating machine according to claim 2, characterized in that: The driven component (44) includes a jet cone (441), which also has a slot in the middle that is compatible with the aluminum rod.

4. The copper-clad aluminum wire coating machine according to claim 3, characterized in that: One end of the grinding strip (431) movably passes through the conical sleeve (421) and extends into its interior. A sealing head (432) is provided at the end of the grinding strip (431) located inside the conical sleeve (421). The other end of the grinding strip (431) movably passes through the air jet cone (441) and extends into its interior. A fixing ring (434) is connected to the end of the grinding strip (431) located inside the air jet cone (441) via a connecting rod (433). An outer ring (435) is fixedly connected inside the air jet cone (441). An inner ring (436) is provided on the inner side of the outer ring (435). Sliding grooves are provided on opposite sides of the inner ring (436) and the outer ring (435). The fixing ring (434) is located in the sliding groove. The inner ring (436) and the outer ring (435) can rotate relative to each other.

5. A copper-clad aluminum wire coating machine according to claim 4, characterized in that: The connecting ring (422) and the cone sleeve (421) are connected by a linkage sleeve (46). The linkage sleeve (46) includes connecting sleeves (461) at both ends and a plurality of connecting rods (462) arranged in the middle. The connecting ring (422) is rotatably connected to the connecting sleeve (461) through a limiting ring. The cone sleeve (421) is fixedly connected to the connecting sleeve (461) through a connecting block.

6. The copper-clad aluminum wire coating machine according to claim 5, characterized in that: The outer wall of the connecting ring (422) is provided with a plurality of limiting holes (423) at equal intervals. The connecting sleeve (461) corresponding to the position of the connecting ring (422) is provided with a reserved hole (463) corresponding to the position of the limiting hole (423). A bolt is provided in the reserved hole (463).

7. A copper-clad aluminum wire coating machine according to claim 4, characterized in that: The protective cylinder (41) is provided with a purging assembly (5) near the jet cone (441). The purging assembly (5) includes a gas collecting cylinder (51) that passes through the protective cylinder (41) and is rotatably connected to the jet cone (441). The gas collecting cylinder (51) is fixedly connected to the protective cylinder (41). The upper end of the gas collecting cylinder (51) is connected to an air pump (52) installed on the top plate (33) through an air guide pipe. The air pump (52) has an external gas storage tank connected to its air inlet end through an air inlet pipe. The gas storage tank is filled with inert gas. The inner ring (436) is connected to the inner wall of the gas collecting cylinder (51) through a fixing rod.

8. A copper-clad aluminum wire coating machine according to claim 7, characterized in that: The outer wall of the jet cone (441) is provided with a plurality of air holes (442), and the jet direction of the air holes (442) is toward the grinding surface.

9. A copper-clad aluminum wire coating machine according to claim 8, characterized in that: The lower end of the protective cylinder (41) is provided with a discharge trough, which is arranged at an angle. A collection box (411) is provided at the lower end of the discharge trough. A suction machine (6) is connected to the lower end of the collection box (411). An external solid-gas separation device is connected to the air outlet end of the suction machine (6).

10. A copper-clad aluminum wire coating machine according to claim 1, characterized in that: The grinding strip (431) has a cavity inside, which is filled with inert gas. The grinding strip (431) is made of flexible material and has abrasive adhering to its outer wall.

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