Aluminum-clad steel core aluminum stranded wire forming equipment and process

Abstract

The present application relates to steel core aluminum stranded wire production technical field, specifically to a kind of aluminum-clad steel core aluminum stranded wire forming equipment and process, including base and mounting bracket, the mounting bracket is fixedly arranged on base, for cooperating production steel core aluminum stranded wire, still include twisting subassembly, motor, drive rod and cleaning component, the inside of the mounting bracket is equipped with mounting hole, the twisting subassembly is set in mounting hole and is connected with mounting bracket, the steel core aluminum stranded wire is threaded through twisting subassembly, the motor is set on twisting subassembly, the drive rod is set in the output of motor and is connected with twisting subassembly, the twisting subassembly is twisted to steel core aluminum stranded wire when motor is electrified and drives drive rod rotation.This application is twisted to steel core aluminum stranded wire by the twisting subassembly and cleaning component of setting, utilize the twisting of multiple spiral-shaped twisting blocks of setting, respectively lubrication and cleaning treatment along the moving path of steel core aluminum stranded wire in the process of twisting, effectively avoid impurity accumulation while ensuring production efficiency.

Description

Technical Field

[0001] This invention relates to the field of steel-cored aluminum stranded wire production technology, specifically to an aluminum-clad steel-cored aluminum stranded wire forming equipment and process. Background Technology

[0002] Compared with traditional steel-cored aluminum stranded wire, aluminum-clad steel-cored aluminum stranded wire significantly improves the overall performance of the conductor by using aluminum-clad steel wire instead of traditional galvanized steel wire as the core. The conductor is lighter, has lower resistance, better corrosion resistance, and improved sag characteristics, making it particularly suitable for applications in coastal and heavily polluted areas.

[0003] When arranging steel-cored aluminum stranded wire, bending is required at corners. Because steel-cored aluminum stranded wire is a metal material with high compressive strength, manual bending is ineffective and easily damages the wire, thus affecting the overall performance of the formed steel-cored aluminum stranded wire. To address this issue, existing technologies offer better solutions, such as a bending device for steel-cored aluminum stranded wire (publication number CN213496176U). This device uses an extrusion seat and positioning columns to process or treat the metal wire, facilitating assembly according to actual bending needs and improving bending efficiency while avoiding wire damage. However, the following drawback remains: since the conductivity of hard aluminum wire is typically only around 61%, annealing is required to meet the conductivity requirement of ≥63% to reduce line loss. When the outer diameter of the stranded wire is greater than 50mm, if a continuous furnace with a "surface heating" speed of 370℃ and 15-25m / min is still used, the heat cannot be conducted to the center within the 1-2 minute heating dwell time. This results in a gradient annealing process where the outer layer is overheated and the inner layer is underheated, which damages the fatigue performance, mechanical strength, conductivity, and appearance quality of the steel-cored aluminum stranded wire. In severe cases, it directly shortens the design life of the circuit. Therefore, it is necessary to anneal the aluminum wire before stranding. However, annealed soft aluminum has strong adhesion (i.e., so-called cold welding or mold sticking). Under high pressure and high-speed friction, aluminum material is easily accumulated on the inner wall of the compression mold. This aluminum material adhesion eventually leads to mold blockage, requiring frequent shutdowns for cleaning and mold replacement, which seriously reduces the overall efficiency of the production line.

[0004] Therefore, in order to solve the above problems, an aluminum-clad steel core aluminum stranded wire forming equipment and process are proposed. Summary of the Invention

[0005] The purpose of this invention is to provide an aluminum-clad steel-cored aluminum stranded wire forming equipment and process, which solves the problem of mold clogging and reduced production efficiency during the processing of annealed soft aluminum. Through the design of stranding and cleaning components, and utilizing multiple spiral stranding blocks, lubrication and cleaning are performed along the moving path of the steel-cored aluminum stranded wire during the stranding process, effectively preventing impurity accumulation while ensuring production efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A forming device for aluminum-clad steel-cored stranded aluminum wire includes a base and a mounting frame. The mounting frame is fixedly mounted on the base for producing steel-cored aluminum stranded wire. It also includes a stranding assembly, a motor, a drive rod, and a cleaning assembly. The mounting frame has mounting holes inside, and the stranding assembly is disposed in the mounting holes and connected to the mounting frame. The steel-cored aluminum stranded wire passes through the stranding assembly. The motor is mounted on the stranding assembly, and the drive rod is located at the output end of the motor and connected to the stranding assembly. When the motor is energized and drives the drive rod to rotate, the stranding assembly strands the steel-cored aluminum stranded wire. The cleaning assembly is mounted on the stranding assembly. When the drive rod rotates, the cleaning assembly alternately draws in air and lubricating oil and stores them in the stranding assembly. When the cleaning assembly draws in air or lubricating oil, the lubricating oil or air stored in the stranding assembly is delivered to the surface of the steel-cored aluminum stranded wire.

[0008] Preferably, the stranding assembly includes a hollow column, a gear ring, a gear, an end cap, a fixing frame, a stranding block, and a hollow tube. The hollow column is coaxially disposed in the mounting hole. Two end caps are provided and symmetrically rotated and sleeved on both ends of the hollow column. The fixing frame is disposed on the end caps and fixedly connected to the mounting frame. The motor is fixedly disposed on one of the end caps. The gear ring is fixedly sleeved on the hollow column. The gear is fixedly sleeved on the drive rod and meshes with the gear ring. The stranding block is disposed on the surface of the steel-cored aluminum stranded wire. The hollow tube is fixedly disposed between the stranding block and the hollow column. The stranding block encloses... The device comprises two segments, Segment 1 and Segment 2, which are smoothly connected from left to right. The inner diameter of the left end of Segment 1 is larger than the outer diameter of the steel-cored aluminum stranded wire. The inner diameter of Segment 1 decreases linearly from left to right, and the inner diameter of the right end is equal to the inner diameter of Segment 2. The inner diameter of Segment 2 is smaller than the outer diameter of the steel-cored aluminum stranded wire. The inner diameter of the left end of Segment 1 is 0.3mm-0.5mm larger than the outer diameter of the steel-cored aluminum stranded wire, while the inner diameter of Segment 2 is 0.3mm-0.5mm smaller than the outer diameter of the steel-cored aluminum stranded wire. The stranding blocks are arranged in a spiral shape and there are at least three of them arranged in a circumferential array along the surface of the steel-cored aluminum stranded wire. The number of spiral turns of each stranding block is less than one turn.

[0009] It is known that, in order to make the surface of steel-cored aluminum stranded wire smoother under the same cross-sectional area to reduce wind pressure and icing thickness, multiple layers of elliptical or fan-shaped aluminum wire need to be pressed into a regular circular cross-section, reducing the outer diameter by 6%-10%. Simultaneously, to improve the effective conductive area and tensile strength of the steel-cored aluminum stranded wire, radial pressure is needed to reduce the gap ratio between aluminum strands and between aluminum and steel to 8% or less. This is often achieved using a complete die with an internal circular hole for extrusion. Considering that the inner diameter of the die is equal along the axial direction of the steel-cored aluminum stranded wire, it is difficult to pass the steel-cored aluminum stranded wire through the die before stranding. Furthermore, during the stranding process, the aluminum material generated by friction from the soft aluminum adheres to the inside of the die, affecting its normal use. Therefore, this solution is adopted. By setting multiple spiral stranding blocks, the rotation of the hollow column drives the multiple stranding blocks to rotate when the motor is powered on. This achieves the rotational extrusion and stranding of the steel-cored aluminum strands while avoiding the aluminum material generated by friction from the soft aluminum affecting the normal operation of the stranding blocks. At the same time, the change in the inner diameter of section one can facilitate the steel-cored aluminum strands to pass through the multiple stranding blocks, thereby achieving the purpose of progressive stranding of the steel-cored aluminum strands and ensuring the stranding effect.

[0010] Preferably, the cleaning assembly includes a slider, an air cylinder, an oil cylinder, and connecting rods. The drive rod has two sets of reciprocating threads. Two sliders are provided, each connected to the drive rod via a corresponding reciprocating thread. The air cylinder and oil cylinder are respectively located on both sides of the mounting frame and each contains a piston. The air cylinder and oil cylinder can also be fixedly connected to the mounting frame via external fixing rods to ensure their structural strength. Two connecting rods are provided and fixedly connected to their respective sliders and pistons. The bottom of both the air cylinder and oil cylinder has connecting pipes that connect to corresponding end caps. The ends of both the air cylinder and oil cylinder are equipped with one-way feed valves. The one-way feed valve on the oil cylinder can be connected to an external oil reservoir to supply lubricating oil. The suction is performed. Both connecting pipes are equipped with one-way discharge valves. The hollow column has a partition inside. Both ends of the hollow column have guide holes. The two ends of the hollow column are rotatably connected to the corresponding end caps through sealed bearings. Each stranded block has two hollow tubes. Both ends of each hollow tube penetrate into the interior of the stranded block and the hollow column. The bottom of section one has a discharge port. Section one and section two are hollow and interconnected. Section one has a baffle inside. The discharge port includes an air outlet and an oil outlet located on both sides of the baffle. The lower ends of the air outlet and the oil outlet are inclined to the left side of the mounting frame along the spiral direction of the stranded block. Multiple air outlets are arranged from left to right along the spiral direction of the stranded block, and the diameter decreases sequentially.

[0011] By adopting the above scheme, during the process of the motor driving the hollow column to rotate and twist the steel-cored aluminum strands via the drive rod, gears, and gear ring, air and lubricating oil are alternately drawn in through the engagement between the two sets of reciprocating threads on the drive rod and the corresponding sliders. The drawn-in lubricating oil is continuously transported into the hollow column for separate storage. Simultaneously, during air extraction, the lubricating oil stored inside the hollow column is transported to the surface of the steel-cored aluminum strands, reducing friction between the soft aluminum and section two through lubrication. During lubricating oil extraction, the air stored inside the hollow column is transported to the surface of the steel-cored aluminum strands, blowing away impurities. Furthermore, due to Bernoulli's principle, the closer the surface of the steel-cored aluminum strands is to the inner wall of section one, the greater the air pressure, significantly improving the cleaning effect on the surface of the steel-cored aluminum strands and preventing impurity accumulation that could affect production efficiency.

[0012] Preferably, the lower end axis of the connecting pipe is misaligned with and perpendicular to the axis of the hollow column, and two sets of driving grooves are arranged around the outer walls of both ends of the hollow column, with each set of driving grooves located directly below the lower end opening of the corresponding connecting pipe.

[0013] By adopting the above solution, after air or lubricating oil enters the corresponding end cap, it can assist the hollow column to rotate by cooperating with the corresponding drive groove, thereby reducing the power loss of the motor when it works through the drive rod, gear and gear ring.

[0014] Preferably, the diameter of the gear is smaller than the diameter of the gear ring.

[0015] By adopting the above scheme, the transmission ratio between the gear and the gear ring can be used to drive the stranding block to rotate slowly during the rapid delivery of air and lubricating oil, thereby achieving thorough cleaning and lubrication of the surface of the steel-cored aluminum stranded wire.

[0016] A forming process for an aluminum-clad steel-core aluminum stranded wire forming equipment includes the following steps:

[0017] S1. Pass the steel-cored aluminum stranded wire through the three stranding blocks, and pull the steel-cored aluminum stranded wire from left to right using an external power source;

[0018] S2. Start the motor to drive the drive rod to rotate, and use the meshing of the gear and the gear ring to drive the hollow column to rotate, so that the three twisting blocks can rotate and twist the steel-cored aluminum stranded wire.

[0019] S3. When the drive rod rotates, it uses the cooperation of two sets of reciprocating threads and corresponding sliders to alternately draw in air and lubricating oil and deliver them to the surface of the steel-cored aluminum stranded wire, removing impurities from the surface of the steel-cored aluminum stranded wire and lubricating it.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. By setting up a stranding component and a cleaning component, while the motor is working and the stranding block rotates and extrudes the steel-cored aluminum stranded wire through power transmission, the cleaning component is simultaneously driven to perform reciprocating feeding operations. This solves the problem in the prior art where annealed soft aluminum is prone to adhesion and accumulation in the fixed mold due to high-pressure friction. It effectively avoids mold blockage caused by aluminum shavings accumulation and significantly improves production efficiency and molding quality without the need for frequent machine shutdowns for cleaning.

[0022] 2. By using multiple spirally distributed stranded blocks with tapered inner diameters, the wire is progressively and flexibly extruded, reducing the difficulty of threading. The large-diameter guide of section one directs the wire in, and the linearly decreasing inner diameter of section one, combined with the sizing effect of section two, allows the soft aluminum to smoothly undergo diameter reduction deformation during rotation. This not only overcomes the difficulty of threading wire with equal-diameter dies but also disperses radial pressure through segmented contact and rotational friction, reducing concentrated stress on a single contact surface. This physically reduces the probability of initial adhesion of the aluminum to the inner wall of the die, thereby improving production efficiency.

[0023] 3. Through the cleaning components, the rotation of the drive rod converts power into the reciprocating motion of the slider, alternately triggering the air cylinder and oil cylinder to work. High-pressure air is used to blow away impurities and particles from the surface of the wire through the air outlet. Then, lubricating oil is used to form a protective oil film through the oil outlet before the soft aluminum enters the second section. This not only removes frictional heat using Bernoulli's principle, but also significantly reduces the coefficient of friction between the soft aluminum and the stranding block. This effectively eliminates the adhesion source that causes mold blockage, ensuring the continuous stability of the stranding process and further guaranteeing production efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 For the present invention Figure 1 A magnified view of part A in the middle section;

[0026] Figure 3 This is a partial cross-sectional structural diagram of the steel-cored aluminum stranded wire, hollow column, and end cap of the present invention.

[0027] Figure 4 This is a schematic diagram of the connection structure between the drive rod and the cleaning component of the present invention;

[0028] Figure 5 For the present invention Figure 3 A magnified view of part B in the middle section;

[0029] Figure 6 For the present invention Figure 3A partial cross-sectional view of the connection structure between the hollow tube and the stranded block;

[0030] Figure 7 This is a partial cross-sectional view of the connection structure between the hollow column and the two end caps of the present invention.

[0031] In the diagram: 1. Base; 2. Mounting bracket; 21. Mounting hole; 3. Steel-cored aluminum stranded wire; 4. Stranding assembly; 41. Hollow column; 411. Partition plate; 412. Guide hole; 413. Drive groove; 42. Gear ring; 43. Gear; 44. End cap; 45. Fixing bracket; 46. Stranding block; 461. Section 1; 462. Section 2; 463. Discharge port; 4631. Air outlet; 4632. Oil outlet; 464. Stop block; 47. Hollow tube; 5. Motor; 6. Drive rod; 61. Reciprocating thread; 7. Cleaning assembly; 71. Slider; 72. Air cylinder; 73. Oil cylinder; 74. Connecting rod; 75. Piston; 76. Connecting pipe; 77. One-way feed valve; 78. One-way discharge valve. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figures 1 to 7 This invention provides an aluminum-clad steel-core aluminum stranded wire forming equipment and process, the technical solution of which is as follows:

[0034] For details, please refer to Figure 1 A forming device for aluminum-clad steel-cored stranded aluminum wire 3 includes a base 1 and a mounting frame 2. The mounting frame 2 is fixedly mounted on the base 1 and is used to produce steel-cored aluminum stranded wire 3. It also includes a stranding assembly 4, a motor 5, a drive rod 6, and a cleaning assembly 7. The mounting frame 2 has a mounting hole 21 inside. The stranding assembly 4 is set in the mounting hole 21 and connected to the mounting frame 2. The steel-cored aluminum stranded wire 3 passes through the stranding assembly 4. The motor 5 is set on the stranding assembly 4. The drive rod 6 is set at the output end of the motor 5 and connected to the stranding assembly 4. When the motor 5 is energized and drives the drive rod 6 to rotate, the stranding assembly 4 strands the steel-cored aluminum stranded wire 3. The cleaning assembly 7 is set on the stranding assembly 4. When the drive rod 6 rotates, the cleaning assembly 7 alternately draws in air and lubricating oil and stores them in the stranding assembly 4. When the cleaning assembly 7 draws in air or lubricating oil, the lubricating oil or air stored in the stranding assembly 4 is transported to the surface of the steel-cored aluminum stranded wire 3.

[0035] As one embodiment of the present invention, refer to Figure 1 , Figure 2, Figure 3 and Figure 6 The stranding assembly 4 includes a hollow column 41, a gear ring 42, a gear 43, an end cap 44, a fixing frame 45, a stranding block 46, and a hollow tube 47. The hollow column 41 is coaxially disposed in the mounting hole 21. Two end caps 44 are provided and symmetrically rotated and sleeved on both ends of the hollow column 41. The fixing frame 45 is disposed on the end cap 44 and fixedly connected to the mounting frame 2. The motor 5 is fixedly disposed on one of the end caps 44. The gear ring 42 is fixedly sleeved on the hollow column 41. The gear 43 is fixedly sleeved on the drive rod 6 and meshes with the gear ring 42. The diameter of the gear 43 is smaller than the diameter of the gear ring 42. The stranding block 46 is disposed on the surface of the steel-cored aluminum stranded wire 3. The hollow tube 47 is fixedly disposed between the stranding block 46 and the hollow column. Between 41, the stranding block 46 includes segment 1 461 and segment 2 462 smoothly connected from left to right. The inner diameter of the left end of segment 1 461 is larger than the outer diameter of the steel-cored aluminum stranded wire 3. The inner diameter of segment 1 461 decreases linearly from left to right and the inner diameter of the right end is equal to the inner diameter of segment 2 462. The inner diameter of segment 2 462 is smaller than the outer diameter of the steel-cored aluminum stranded wire 3. Specifically, the inner diameter of the left end of segment 1 461 is 0.3mm-0.5mm larger than the outer diameter of the steel-cored aluminum stranded wire 3, while the inner diameter of segment 2 462 is 0.3mm-0.5mm smaller than the outer diameter of the steel-cored aluminum stranded wire 3. The stranding blocks 46 are arranged in a spiral shape and there are at least three in a circumferential array along the surface of the steel-cored aluminum stranded wire 3. The number of spiral turns of each stranding block 46 is less than one turn.

[0036] Under the above-mentioned conditions, when the motor 5 is powered on and drives the drive rod 6 to rotate, the meshing connection between the gear 43 and the gear ring 42 drives the gear ring 42 to rotate. Since the gear ring 42 is fixedly sleeved on the hollow column 41, and the hollow column 41 is fixedly connected to the stranding block 46 through the hollow tube 47, the stranding block 46 can rotate synchronously with the hollow column 41. During the rotation, the steel-cored aluminum stranded wire 3 is progressively stranded by the change in the inner diameter of section one 461 and section two 462.

[0037] As one embodiment of the present invention, refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7The cleaning component 7 includes a slider 71, an air cylinder 72, an oil cylinder 73, and a connecting rod 74. The drive rod 6 has two sets of reciprocating threads 61. Two sliders 71 are provided, each connected to the drive rod 6 via corresponding reciprocating threads 61. The air cylinder 72 and oil cylinder 73 are respectively located on both sides of the mounting frame 2, and each contains a piston 75. The air cylinder 72 and oil cylinder 73 can also be fixedly connected to the mounting frame 2 via external fixing rods to ensure their structural strength. Two connecting rods 74 are provided, each fixedly connected to a corresponding slider 71 and piston 75. The two pistons 75 move synchronously, with one piston 75 at the port of the air cylinder 72 and the other piston 75 at the port of the oil cylinder 73. At the deepest part of cylinder 73, both the bottom of air cylinder 72 and oil cylinder 73 are equipped with connecting pipes 76, which are respectively connected to the corresponding end caps 44. One-way feed valves 77 are provided at the ends of air cylinder 72 and oil cylinder 73. The one-way feed valve 77 on oil cylinder 73 can be connected to an external oil reservoir to draw lubricating oil. One-way discharge valves 78 are provided on both connecting pipes 76. A partition 411 is provided inside the hollow column 41. Guide holes 412 are provided at both ends of the hollow column 41. The two ends of the hollow column 41 are rotatably sleeved with the corresponding end caps 44 through sealed bearings to ensure the sealing of the connection. Two hollow tubes 47 are provided on each stranded block 46.

[0038] Both ends of the core tube 47 extend into the interior of the stranded block 46 and the hollow column 41. The bottom of section 461 is provided with a discharge port 463. The lower end axis of the connecting tube 76 is misaligned with and perpendicular to the axis of the hollow column 41. Both ends of the hollow column 41 are surrounded by two sets of drive grooves 413. Each set of drive grooves 413 is located directly below the lower end of the corresponding connecting tube 76.

[0039] Under the above-mentioned conditions, when the drive rod 6 rotates, the two sets of reciprocating threads 61 on it can drive the corresponding sliders 71 to move respectively. During the movement of the two sliders 71, the corresponding pistons 75 are driven to move in the air cylinder 72 or the oil cylinder 73 through the corresponding connecting rods 74. When the two sliders 71 move from left to right, the air pressure in the air cylinder 72 will decrease, while the air pressure in the oil cylinder 73 will increase. When the pressure in the air cylinder 72 decreases, the one-way feed valve 77 on it will draw the external air into its own interior, and the lubricating oil in the oil cylinder 73 will be pressed into the corresponding end cap 44 through the corresponding connecting pipe 76 and the one-way discharge valve 78 under the action of air pressure. Since the end cap 44 and the hollow column 41 are connected through the guide hole 412, the lubricating oil inside the end cap 44 will flow into the hollow column 41, and finally enter the interior of the corresponding twisting block 46 under the action of the hollow tube 47. As the drive rod 6 continues to rotate, the lubricating oil inside the stranding block 46 gradually increases, flowing through the discharge port 463 to the surface of the steel-cored aluminum stranded wire 3, thus lubricating the steel-cored aluminum stranded wire 3. Conversely, when the two sliders 71 move from right to left, the air cylinder 72 delivers air at high pressure to the surface of the steel-cored aluminum stranded wire 3, thereby achieving the effect of cleaning the steel-cored aluminum stranded wire 3 before stranding.

[0040] As one embodiment of the present invention, refer to Figure 1 , Figure 3 and Figure 6 Section 1 461 and Section 2 462 are hollow and interconnected. Section 1 461 has a baffle 464 inside. The discharge port 463 includes an air outlet 4631 and an oil outlet 4632 located on both sides of the baffle 464. The lower ends of the air outlet 4631 and the oil outlet 4632 are inclined towards the left side of the mounting frame 2 along the spiral direction of the twisted block 46. Multiple air outlets 4631 are arranged from left to right along the spiral direction of the twisted block 46, and the diameter decreases sequentially.

[0041] Under the above-mentioned conditions, the air and lubricating oil entering the stranding block 46 can be separated by the baffle 464, so that the air and lubricating oil can be discharged from the corresponding air outlet 4631 and oil outlet 4632 respectively, so that cleaning and lubrication can be carried out independently, and impurities are prevented from being stably adsorbed on the surface of the steel-cored aluminum stranded wire 3 due to the intermolecular forces of the lubricating oil.

[0042] A forming process for an aluminum-clad steel-core aluminum stranded wire forming device includes the following steps:

[0043] S1. Pass the steel-cored aluminum stranded wire 3 through the three stranding blocks 46, and pull the steel-cored aluminum stranded wire 3 from left to right through the external power source;

[0044] S2. Start motor 5 drives drive rod 6 to rotate, and the meshing of gear 43 and gear ring 42 drives hollow column 41 to rotate, so that the three twisting blocks 46 rotate and twist the steel core aluminum stranded wire 3.

[0045] S3. When the drive rod 6 rotates, the two sets of reciprocating threads 61 and the corresponding sliders 71 alternately draw in air and lubricating oil and deliver them to the surface of the steel-cored aluminum stranded wire 3 to remove impurities and lubricate the surface of the steel-cored aluminum stranded wire 3.

[0046] Working principle:

[0047] First, the steel-cored aluminum stranded wire 3 is passed through the three stranding blocks 46 set inside the hollow column 41, and the steel-cored aluminum stranded wire 3 is continuously pulled from left to right by an external power source; then, the motor 5 is started to drive the drive rod 6 to rotate. The rotation of the drive rod 6 simultaneously performs two actions: first, the gear 43 on the drive rod 6 meshes with the gear ring 42 fixedly sleeved on the hollow column 41, causing the hollow column 41 to rotate within the mounting frame 2. The hollow column 41 drives the corresponding stranding blocks 46 to rotate around the hollow tube 47 fixedly connected to it. The steel-cored aluminum stranded wire 3 revolves synchronously. Utilizing the smoothly connected segments 461 and 462 within the stranding block 46, the wire sequentially passes through the inlet of segment 461 (where the inner diameter is larger than the outer diameter) and through a region with a linearly decreasing inner diameter, finally completing a tight, progressive rotary extrusion stranding at segment 462 (where the inner diameter is smaller than the outer diameter). Secondly, when the drive rod 6 rotates, the two sets of reciprocating threads 61 on it drive the corresponding slider 71 to reciprocate left and right. The slider 71, through the connecting rod 74, drives the piston 75 in the air cylinder 72. The piston 75 moves synchronously within the oil cylinder 73. When the piston 75 moves and generates negative pressure, the one-way feed valve 77 opens to draw in air or lubricating oil. When the piston 75 moves in the opposite direction and generates positive pressure, the one-way discharge valve 78 opens and forces the fluid into the corresponding connecting pipe 76. The fluid then enters the end cap 44 and impacts the drive groove 413 surrounding the outer wall of the hollow column 41 to assist the rotation of the hollow column 41. It then enters the interior of the hollow column 41 through the guide hole 412. The air and lubricating oil entering the hollow column 41 are separated by the internal baffle 411. Without interfering with each other, the air is transported to the first section 461 of the stranding block 46 through the corresponding hollow tubes 47. The baffles 464 set inside the first section 461 further separate and guide the airflow. Finally, the air is sprayed out from the air outlets 4631 arranged in a spiral direction with decreasing diameter to blow away impurities on the surface of the steel-cored aluminum stranded wire 3. The lubricating oil is sprayed out from the oil outlet 4632 to lubricate before the soft aluminum enters the second section 462 for friction. Thus, stranding and cleaning lubrication are carried out simultaneously under the drive of a single power source, which effectively ensures production efficiency.

[0048] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An aluminum-clad steel-cored aluminum stranded wire forming device, comprising a base (1) and a mounting frame (2), for use in producing steel-cored aluminum stranded wire (3), characterized in that: It also includes a stranding assembly (4), a motor (5), a drive rod (6), and a cleaning assembly (7). The mounting frame (2) has a mounting hole (21) inside. The stranding assembly (4) is set in the mounting hole (21) and connected to the mounting frame (2). The steel-cored aluminum stranded wire (3) passes through the stranding assembly (4). The motor (5) is set on the stranding assembly (4). The drive rod (6) is set at the output end of the motor (5) and connected to the stranding assembly (4). When the motor (5) is energized and drives the drive rod (6) to rotate, the stranding assembly (4) strands the steel-cored aluminum stranded wire (3). The cleaning assembly (7) is set on the stranding assembly (4). When the drive rod (6) rotates... When in operation, the cleaning component (7) alternately draws in air and lubricating oil and stores them in the stranding component (4). When the cleaning component (7) draws in air or lubricating oil, the lubricating oil or air stored in the stranding component (4) is delivered to the surface of the steel-cored aluminum stranded wire (3). The stranding component (4) includes a hollow column (41), a toothed ring (42), a gear (43), an end cap (44), a fixing frame (45), a stranding block (46), and a hollow tube (47). The hollow column (41) is coaxially arranged in the mounting hole (21). The end cap (44) is provided in two and symmetrically rotated and sleeved on both ends of the hollow column (41). The fixing frame (45) is arranged on the end cap (44) and is connected to the mounting hole (21). The mounting bracket (2) is connected, and the hollow tube (47) is fixedly set between the twisted block (46) and the hollow column (41). The twisted block (46) includes a section one (461) and a section two (462) that are smoothly connected from left to right. The cleaning component (7) includes a slider (71), an air cylinder (72), an oil cylinder (73) and a connecting rod (74). The drive rod (6) is provided with two sets of reciprocating threads (61). There are two sliders (71) and they are respectively sleeved with the drive rod (6) through the corresponding reciprocating threads (61). The air cylinder (72) and the oil cylinder (73) are respectively set on both sides of the mounting bracket (2) and each is provided with a piston (75). The connecting rod ( 74) Two are provided and fixedly connected to the corresponding slider (71) and piston (75) respectively. The bottom of the air cylinder (72) and oil cylinder (73) are provided with connecting pipes (76) and are connected to the corresponding end caps (44) through the corresponding connecting pipes (76). The hollow column (41) is provided with a partition (411). Both ends of the hollow column (41) are provided with guide holes (412). Two hollow tubes (47) are provided on each of the twisted blocks (46). Both ends of each hollow tube (47) penetrate into the interior of the twisted block (46) and the hollow column (41). The bottom of the first section (461) is provided with a discharge port (463).

2. The aluminum-clad steel-core aluminum stranded wire forming equipment according to claim 1, characterized in that: The motor (5) is fixedly mounted on one of the end caps (44), the gear ring (42) is sleeved on the hollow column (41), the gear (43) is sleeved on the drive rod (6) and meshes with the gear ring (42), the stranding block (46) is disposed on the surface of the steel-cored aluminum stranded wire (3), the inner diameter of the left end of the first segment (461) is greater than the outer diameter of the steel-cored aluminum stranded wire (3), the inner diameter of the first segment (461) decreases linearly from left to right and the inner diameter of the right end is equal to the inner diameter of the second segment (462), the inner diameter of the second segment (462) is smaller than the outer diameter of the steel-cored aluminum stranded wire (3), the stranding block (46) is arranged in a spiral shape and there are at least three in a circumferential array along the surface of the steel-cored aluminum stranded wire (3).

3. The aluminum-clad steel-core aluminum stranded wire forming equipment according to claim 1, characterized in that: One-way feed valves (77) are provided at the ends of the air cylinder (72) and the oil cylinder (73), and one-way discharge valves (78) are provided on the two connecting pipes (76).

4. The aluminum-clad steel-core aluminum stranded wire forming equipment according to claim 3, characterized in that: The first segment (461) and the second segment (462) are hollow and interconnected. The first segment (461) has a baffle (464) inside. The discharge port (463) includes an air outlet (4631) and an oil outlet (4632) located on both sides of the baffle (464). The lower ports of the air outlet (4631) and the oil outlet (4632) are inclined along the spiral direction of the twisted block (46) and toward the left side of the mounting frame (2).

5. The aluminum-clad steel-core aluminum stranded wire forming equipment according to claim 4, characterized in that: The air outlet (4631) is provided in multiple ways from left to right along the spiral direction of the twisted block (46), with the diameter decreasing sequentially.

6. The aluminum-clad steel-core aluminum stranded wire forming equipment according to claim 3, characterized in that: The lower end axis of the connecting pipe (76) is misaligned with and perpendicular to the axis of the hollow column (41). Two sets of driving grooves (413) are arranged around the outer walls of both ends of the hollow column (41). Each set of driving grooves (413) is located directly below the lower end of the corresponding connecting pipe (76).

7. The aluminum-clad steel-core aluminum stranded wire forming equipment according to claim 2, characterized in that: The diameter of the gear (43) is smaller than the diameter of the gear ring (42).

8. A forming process applicable to the aluminum-clad steel-core aluminum stranded wire forming equipment according to any one of claims 1-7, characterized in that: Includes the following steps: S1. Pass the steel-cored aluminum stranded wire (3) through the three stranding blocks (46) and pull the steel-cored aluminum stranded wire (3) from left to right through the external power source; S2. Start the motor (5) to drive the drive rod (6) to rotate. Use the meshing of the gear (43) and the gear ring (42) to drive the hollow column (41) to rotate, so that the three twisting blocks (46) can rotate and twist the steel core aluminum stranded wire (3). S3. When the drive rod (6) rotates, it uses the cooperation of two sets of reciprocating threads (61) and corresponding sliders (71) to alternately draw in air and lubricating oil and deliver them to the surface of the steel-cored aluminum stranded wire (3), thereby removing impurities from the surface of the steel-cored aluminum stranded wire (3) and lubricating it.

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