A drawing production device for stainless steel wire

Abstract

The present application relates to steel wire drawing technical field, specifically disclose a kind of drawing production device for stainless steel wire, including shell, collecting box being installed in shell and drawing die being installed on collecting box, the collecting box is equipped with powder supply mechanism and powder feeding mechanism, the powder supply mechanism is used to deliver wire drawing powder to powder feeding mechanism, the inside of the shell and located the drawing die side is equipped with winding mechanism;The powder feeding mechanism includes rotationally connected powder feeding assembly on powder supply mechanism, the powder feeding assembly includes rotationally connected rotating cylinder on powder supply mechanism, is set on the expansion piece of rotating cylinder inner wall and is equipped with multiple spiral plates around expansion piece inner side;The drawing production device for stainless steel wire of the present application, expansion piece cooperates spiral plate, can continuously, gently press wire drawing powder into the micro concave and texture of steel wire surface, to form dense and fit lubricating film, avoid the uneven or local exposed steel phenomenon of powder layer due to uneven or wear of bristle pressure.

Description

Technical Field

[0001] This invention relates to the field of steel wire drawing technology, and more specifically to a drawing production apparatus for stainless steel wire. Background Technology

[0002] Wire drawing is a plastic processing technology that uses drawing force to force wire rod or blank through the die hole to produce small-section steel wire or metal wire. It features high precision and a smooth surface finish. This process is classified by temperature into cold drawing (room temperature), hot drawing (suitable for high-melting-point metals), and warm drawing; and by modulus into single-pass and multi-pass continuous drawing, with the latter being the mainstream and efficient method. During the drawing process, the drawing stress must be controlled between the deformation resistance and the yield strength. The safety factor is typically 1.40–2.0; for ultra-fine wires, the factor can be appropriately increased to reduce wire breakage. Wire drawing powder, also known as wire drawing powder or steel wire drawing powder, is a common name for dry wire drawing lubricant. Its main components are calcium hydroxide, sodium hydroxide, stearic acid, and animal and vegetable oils, and it is usually divided into sodium-based and calcium-based types. During the cold drawing process of steel wire, the wire drawing powder can reduce the coefficient of friction by forming a lubricating film, reducing energy consumption and extending die life, while also protecting the surface quality of the steel wire to meet subsequent processing requirements.

[0003] Chinese patent application CN121222846A discloses a wire rope drawing processing device, which includes a mounting platform, an unwinding drum mounted on the mounting platform, a wire mold movably mounted on the mounting platform, a worktable mounted on the mounting platform, a limit groove formed on the worktable, the wire mold movably mounted in the limit groove, a wire groove formed on the worktable, a powder spreading mechanism for evenly spreading powder during wire rope drawing, and a wire drawing mechanism for pulling the wire rope.

[0004] However, the structural design of the aforementioned technologies is such that during the powder coating process of coarse steel wire, the repeated friction of the brush on the steel wire can easily cause the brush bristles to wear down or even fall off. Furthermore, the pressure when the brush bristles come into contact with the steel wire is difficult to control, which can easily lead to uneven circumferential distribution of powder layer or local exposure of steel on the steel wire. This can cause the drawing die to become clogged due to excessive powder layer or to wear down due to insufficient lubrication, ultimately affecting the surface quality of the steel wire and production efficiency.

[0005] Therefore, a drawing production device for stainless steel wire is proposed to solve the problems mentioned above. Summary of the Invention

[0006] This invention provides a drawing production apparatus for stainless steel wire, which aims to solve the problem of uneven powder coating on steel wire in related technologies.

[0007] The present invention provides a drawing production apparatus for stainless steel wire, comprising a housing, a collection box installed in the housing, and a drawing die installed on the collection box. The collection box is provided with a powder supply mechanism and a powder application mechanism. The powder supply mechanism is used to transport drawing powder to the powder application mechanism. A winding mechanism is provided inside the housing and on one side of the drawing die for drawing and winding steel wire.

[0008] The powder application mechanism includes a powder application component rotatably connected to the powder supply mechanism. The powder application component includes a rotating cylinder rotatably connected to the powder supply mechanism, an expansion member disposed on the inner wall of the rotating cylinder, and a plurality of spiral plates disposed around the inner side of the expansion member. The expansion member can be inflated and expanded, and after expansion, the expansion member can apply radial uniform pressure to the steel wire. The spiral plates rotate with the rotating cylinder to compact and trim the powder layer.

[0009] During the wire drawing process, the wire passes through the powder supply mechanism, the expansion component, and the collection box in sequence before entering the drawing die for drawing. After drawing, the wire passes through the drawing die and is wound onto the winding mechanism. As the wire passes through the expansion component, the powder supply mechanism delivers the drawing powder to the inside of the expansion component. At the same time, the expansion component expands to form a uniform radial pressure field. This pressure is perpendicular to the wire axis and evenly distributed circumferentially, which can continuously and gently press the drawing powder into the micro-pits and textures on the surface of the wire to form a dense and adherent lubricating film. This avoids uneven powder layer or local steel exposure caused by uneven brush pressure or wear. In addition, the spiral plate rotates synchronously with the expansion component, which can also produce a dual effect of axial propulsion and circumferential stirring of the powder. During the rotation of the spiral plate, the powder can be continuously picked up, scattered, and redirected to the surface of the wire, breaking the static agglomeration that may be formed by gravity or accumulation of the powder. This realizes the dynamic fluidization and redistribution of the powder, further ensuring the continuity of the powder layer in the axial direction.

[0010] Preferably, the powder supply mechanism includes a protective cylinder and a conveying component rotatably disposed inside the protective cylinder. A driving component is connected to the conveying component, and when the driving component drives the conveying component to rotate, it conveys the drawing powder forward to the inside of the expansion member.

[0011] When the drawing powder enters the protective cylinder, the drive component drives the conveying component to rotate inside the protective cylinder. During the rotation of the conveying component, the drawing powder can be gradually pushed into the expansion component.

[0012] Preferably, the conveying assembly includes a spiral shaft and a pulley. One end of the spiral shaft passes through the protective cylinder and extends to the outside of the protective cylinder. The pulley is installed on the outside of one end of the spiral shaft. The spiral shaft has an inlet hole for the steel wire to pass through.

[0013] By setting the inlet hole inside the spiral shaft, the steel wire and powder can be conveyed coaxially and synchronously. When the steel wire passes through the inlet hole, it can be immediately surrounded by the powder flow at the end of the spiral shaft, realizing the instant coverage of the steel wire surface by the powder. At the same time, the spiral shaft can also ensure that the powder enters the powdering area continuously and stably to ensure stable powdering of the steel wire.

[0014] Preferably, the powdering assembly further includes an air inlet ring, an exhaust ring, and a fixed cylinder. The air inlet ring and the exhaust ring are respectively connected to both ends of the rotating cylinder, and both the air inlet ring and the exhaust ring are connected to the expansion member. Support frames mounted on the collection box are rotatably connected to the outer sides of both ends of the rotating cylinder. The fixed cylinder is connected to the exhaust ring and communicates with the drawing die. An air supply assembly is rotatably connected to the outer side of the air inlet ring.

[0015] The air supply assembly can supply air to the air intake ring, allowing the gas in the air intake ring to enter the expansion member, so that the expansion member can apply pressure evenly to the steel wire.

[0016] Preferably, the spiral plates are evenly distributed circumferentially along the inner wall of the expansion member, and the width of the spiral plates gradually increases from the first end to the last end, with the last end of the spiral plates located close to the fixed cylinder.

[0017] By gradually increasing the width of the spiral plate, the powder layer can undergo progressive compaction and end trimming during the conveying process, ensuring that the powder is fully embedded in the steel wire surface and preventing die blockage caused by excessive powder layer on the steel wire surface, thus improving the stability of the drawing process.

[0018] Preferably, the drive assembly includes a motor, a transmission rod, a second pulley, and a third pulley. The transmission rod is installed at the output end of the motor, and the second and third pulleys are respectively installed at both ends of the transmission rod. The first and second pulleys are connected by a belt drive. The motor drives the second and third pulleys to rotate synchronously through the transmission rod, which can simultaneously drive the spiral shaft and the powder application mechanism to rotate.

[0019] Motor 1 can drive pulley 2 and pulley 3 to rotate simultaneously through the transmission rod at its output end. During the rotation of pulley 2, the spiral shaft is driven to rotate at a constant speed in the protective cylinder through pulley 1 connected to it, so as to convey the drawing powder. During the rotation of pulley 3, it can drive the powder feeding mechanism to rotate, so as to feed the powder onto the dispensing material.

[0020] Preferably, the fixed cylinder is provided with a fourth pulley, and the third pulley is connected to the fourth pulley via a belt.

[0021] Preferably, the air supply assembly includes a collar and an air inlet pipe. The collar is rotatably connected to the outside of the air inlet ring and is sealed to the air inlet ring. The air inlet pipe is connected to an external air pump and is used to supply air to the expansion component.

[0022] When supplying air to the expander 412, the compressed air output by the external air pump first enters the internal cavity of the collar 421 through the air inlet pipe 422, forming a stable initial airflow. Subsequently, the compressed air passes through the annular air passage set inside the air inlet ring 415 and is evenly distributed to the inlets of multiple through slots 414 on the expander 412. The air enters the internal cavity of the expander 412 through the through slots 414, so that it maintains synchronous and uniform expansion in the circumferential and axial directions. In addition, through the rotating connection design between the collar and the air inlet pipe, a dynamic sealing connection between the air passage and the rotating component is realized, ensuring that the expander can still be stably inflated during rotation, avoiding the problems of air pipe entanglement or air leakage.

[0023] Preferably, the inner bottom wall of the collection box is inclined to collect and recycle scattered powder, and a door is provided on one side of the bottom of the collection box for opening the collection box.

[0024] By tilting the bottom wall of the collection box, scattered powder can automatically gather towards the box door under gravity, which facilitates the recycling of drawing powder and the cleaning of the collection box.

[0025] Preferably, the winding mechanism includes a second motor and a winding roller, one end of which is mounted on the drive shaft of the second motor, and the second motor can drive the winding roller to rotate to pull the steel wire.

[0026] By adopting the above technical solution, the beneficial effects of the present invention are as follows:

[0027] 1. During the drawing of steel wire, the steel wire passes through the powder supply mechanism, the expansion component, and the collection box in sequence before entering the drawing die for drawing. After drawing, the steel wire passes through the drawing die and is wound onto the winding mechanism. During the process of the steel wire passing through the expansion component, the powder supply mechanism delivers the drawing powder to the inside of the expansion component. At the same time, the expansion component expands to form a uniform radial pressure field. This pressure is perpendicular to the steel wire axis and is evenly distributed along the circumference. It can continuously and gently press the drawing powder into the micro-pits and textures on the surface of the steel wire to form a dense and adhered lubricating film, avoiding uneven powder layer or local steel exposure caused by uneven brush pressure or wear.

[0028] 2. During the rotation of the expansion component, the spiral plate rotates synchronously, which can exert a dual effect of axial propulsion and circumferential stirring on the powder. During the rotation of the spiral plate, it can also continuously pick up, throw, and redistribute the powder to the surface of the steel wire, breaking the static agglomeration that may form due to gravity or accumulation of the powder, realizing the dynamic fluidization and redistribution of the powder, and further ensuring the axial continuity of the powder layer. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of a specific embodiment of the present invention.

[0030] Figure 2 This is a schematic diagram of the powder supply mechanism in a specific embodiment of the present invention.

[0031] Figure 3 This is a schematic diagram of the drawing mechanism in a specific embodiment of the present invention.

[0032] Figure 4 This is a schematic diagram of the powder application mechanism in a specific embodiment of the present invention.

[0033] Figure 5 This is a schematic diagram of the internal structure of the protective cylinder in a specific embodiment of the present invention.

[0034] Figure 6 This is a schematic diagram of the structure of the driving component in a specific embodiment of the present invention.

[0035] Figure 7 This is a schematic diagram of the internal structure of the rotating cylinder in a specific embodiment of the present invention.

[0036] Figure 8 This is a schematic diagram of the spiral plate in a specific embodiment of the present invention.

[0037] Figure 9 This is a schematic diagram of the intake ring structure in a specific embodiment of the present invention.

[0038] Figure 10 This is a schematic diagram of the winding mechanism in a specific embodiment of the present invention.

[0039] Figure label:

[0040] 10. Shell;

[0041] 20. Drawing mechanism; 21. Collection box; 22. Drawing die; 23. Box door;

[0042] 30. Powder feeding mechanism; 31. Protective cylinder; 32. Feed pipe; 33. Conveying assembly; 331. Screw shaft; 332. Inlet hole; 333. Belt pulley one; 34. Drive assembly; 341. Motor one; 342. Transmission rod; 343. Belt pulley two; 344. Belt pulley three; 345. Mounting bracket; 35. Fixing bracket;

[0043] 40. Powder application mechanism; 41. Powder application assembly; 411. Rotating cylinder; 412. Expansion component; 413. Spiral plate; 414. Through groove; 415. Inlet ring; 416. Exhaust ring; 417. Fixed cylinder; 418. Belt pulley four; 419. Exhaust pipe; 42. Air supply assembly; 421. Collar; 422. Inlet pipe; 43. Support frame;

[0044] 50. Winding mechanism; 51. Connecting frame; 52. Motor II; 53. Winding roller. Detailed Implementation

[0045] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0046] like Figures 1 to 10 As shown, the stainless steel wire drawing production apparatus of the present invention includes a housing 10, a drawing mechanism 20, a powder supply mechanism 30, a powder application mechanism 40, and a winding mechanism 50. The drawing mechanism 20 is installed inside the housing 10. The powder supply mechanism 30 and the powder application mechanism 40 are sequentially arranged on top of the drawing mechanism 20 and are interconnected. The powder application mechanism 40 is located at one end of the powder supply mechanism 30, and an external feeder is connected to the powder supply mechanism 30. An external air pump is connected to the powder application mechanism 40. The winding mechanism 50 is installed in the housing 10 and located on one side of the drawing mechanism 20, and is used to wind the drawn steel wire.

[0047] In the entire wire drawing process, the steel wire to be processed first needs to pass through the powder supply mechanism 30. After passing through the powder supply mechanism 30, the wire enters the powder application mechanism 40. At this time, the powder application mechanism 40 rotates while uniformly pressing the drawing powder onto the outer surface of the steel wire, so that the drawing powder adheres tightly to the surface of the steel wire, forming a uniform protective layer. This effectively reduces the friction between the steel wire and the drawing die, reduces the damage to the steel wire during the drawing process, and thus improves the quality of the steel wire and the drawing efficiency. After being powdered, the steel wire enters the drawing mechanism 20, allowing it to gradually pass through the drawing mechanism 20, thereby realizing the drawing process of the steel wire. During the drawing process, the steel wire moves forward slowly under the traction of the winding mechanism 50. After the steel wire completes one drawing through the drawing mechanism 20, it will be wound once on the winding reel of the winding mechanism 50. This temporarily stores the steel wire and allows for further adjustment of the wire tension, ensuring smoother drawing operations in subsequent processes. The wire then continues to move forward and enters the next drawing cycle for further drawing operations until the required specifications and performance requirements are met.

[0048] like Figures 1 to 3As shown, the drawing mechanism 20 includes a collection box 21, a drawing die 22, and a door 23. The bottom of the collection box 21 is installed inside the housing 10, and one end of the drawing die 22 is installed on the top side of the collection box 21. The collection box 21 has holes for the steel wire to pass through the collection box 21 and enter the drawing die 22. After being powdered, the steel wire passes through the collection box 21 and enters the drawing die 22 for drawing. The door 23 is hinged to the bottom side of the collection box 21. The inner bottom wall of the collection box 21 is inclined, which can collect the drawing powder that falls from the steel wire or is discharged from the powdering mechanism 40, so as to continue to use it later, avoid waste of drawing powder, and reduce powder consumption and production costs in the steel wire drawing process.

[0049] like Figures 1 to 4 As shown, the powder feeding mechanism 30 includes a protective cylinder 31, a feed pipe 32, a conveying assembly 33, and a drive assembly 34. One end of the protective cylinder 31 is closed, and the powder feeding mechanism 40 is rotatably connected to and communicates with the other end of the protective cylinder 31. Fixing frames 35 are installed on the outer sides of both ends of the protective cylinder 31, with the bottom of the fixing frames 35 installed on the top of the collection box 21. The feed pipe 32 is vertically arranged, with its bottom end installed on one side of the top of the protective cylinder 31 and communicating with it. The top end of the feed pipe 32 penetrates the housing 10 and communicates with an external feeder. The conveying assembly 33 is rotatably connected inside the protective cylinder 31, and the drive assembly 34 is located at the bottom of the protective cylinder 31. The drive assembly 34 is drively connected to both the conveying assembly 33 and the powder feeding mechanism 40.

[0050] When powdering the steel wire, an external feeder adds drawing powder into the protective cylinder 31 through the feed pipe 32. At this time, the drive assembly 34, through the conveying assembly 33, drives the drawing powder in the protective cylinder 31 to be conveyed into the powdering mechanism 40. As the steel wire passes through the powdering mechanism 40, the drive assembly 34 drives the powdering mechanism 40 to rotate, so as to evenly distribute the drawing powder in the powdering mechanism 40 onto the surface of the steel wire, facilitating subsequent lubrication of the steel wire.

[0051] like Figure 2 , Figure 4 and Figure 5As shown, the conveying assembly 33 includes a spiral shaft 331 and a pulley 333. The spiral shaft 331 is rotatably connected to the inside of the protective cylinder 31 via bearings. One end of the spiral shaft 331 passes through one end of the protective cylinder 31 and extends to the outside of the protective cylinder 31, while the other end of the spiral shaft 331 passes through the other end of the protective cylinder 31 and extends into the powder feeding mechanism 40. The pulley 333 is installed on the outside of one end of the spiral shaft 331 and is connected to the drive assembly 34 for transmission. The spiral shaft 331 also has an inlet hole 332 for the steel wire to pass through. The diameter of the inlet hole 332 is slightly larger than the diameter of the steel wire to be processed, which ensures that the steel wire can pass through smoothly and avoids excessive gaps that would cause powder to leak from the inlet hole 332. When the spiral shaft 331 rotates, the spiral blades on its outer edge can smoothly push the drawing powder falling into the protective cylinder 31 to the powder feeding mechanism 40, realizing the co-directional conveying of powder and steel wire and ensuring the continuity of the powder feeding process.

[0052] During the feeding process, an external feeder delivers wire drawing powder into the protective cylinder 31 through the feed pipe 32. At this time, the drive assembly 34 drives the spiral shaft 331 to rotate inside the protective cylinder 31 via the pulley 333. The spiral blades push the wire drawing powder inside the protective cylinder 31 to move axially, thereby feeding the wire drawing powder in the protective cylinder 31 into the powder coating mechanism 40. During the rotation of the spiral shaft 331, steel wire enters the powder coating mechanism 40 through the wire inlet hole 332 in the spiral shaft 331 for powder coating.

[0053] like Figures 2 to 6 As shown, the drive assembly 34 includes a motor 341, a transmission rod 342, a pulley 343, a pulley 344, and a mounting bracket 345. The motor 341 is mounted on top of the mounting bracket 345, which is mounted on one side of the top of the collection box 21. One end of the transmission rod 342 is mounted on the drive shaft of the motor 341, and the other end is rotatably connected to the collection box 21. Pulleys 343 and 344 are rotatably connected to the two ends of the transmission rod 342, respectively. Pulley 343 is connected to pulley 343 via a belt drive, and pulley 344 is connected to the powder application mechanism 40 via a belt drive, thereby driving the powder application mechanism 40 to rotate as a whole.

[0054] During powder application, motor 341 starts and synchronously drives pulleys 343 and 344 to rotate via transmission rod 342. At this time, pulley 343 drives pulley 333 to rotate via belt, which in turn drives the spiral shaft 331 to rotate inside the protective cylinder 31, thus feeding the drawing powder into the powder application mechanism 40. Simultaneously, pulley 344 drives the powder application mechanism 40 to rotate outside the steel wire, ensuring even powder application to the wire.

[0055] like Figures 2 to 4As shown, the powder application mechanism 40 includes a powder application component 41 and an air supply component 42. Support frames 43 are rotatably connected to the outer sides of both ends of the powder application component 41. The support frames 43 are mounted on the top of the collection box 21, and one end of the powder application component 41 is connected to the protective cylinder 31. The air supply component 42 is rotatably connected to the outer side of one end of the powder application component 41 and is connected to an external air pump for supplying compressed gas into the component.

[0056] After the external air pump is started, compressed gas is delivered to the powder application component 41 through the air supply component 42. At this time, the powder application component 41 pushes the drawing powder toward the steel wire under the action of the gas, so as to press the drawing powder onto the outer periphery of the steel wire, thereby forcibly embedding the drawing powder into the micro-pits on the surface of the steel wire to form a dense and adhered lubricating film.

[0057] like Figures 3 to 9 As shown, the powder coating assembly 41 includes a rotating cylinder 411, an expansion member 412, a spiral plate 413, an air intake ring 415, an exhaust ring 416, a fixed cylinder 417, a pulley 418, and an exhaust pipe 419. The rotating cylinder 411 is rotatably connected to the inner side of two support frames 43 via bearings, and the expansion member 412 is installed on the inner side of the rotating cylinder 411. There are multiple spiral plates 413, which are arranged in a circular array around the axis of the exhaust ring 416, and the ends of the spiral plates 413 are all installed on the exhaust ring 416. It should be noted that the width of the spiral plate 413 gradually increases from the beginning to the end, and the inner side of the expansion member 412 has grooves for installing the spiral plates 413. The air intake ring 415 and the exhaust ring 416 are respectively installed at both ends of the rotating cylinder 411, and both ends of the expansion member 412 have through grooves 414 that communicate with the air intake ring 415 and the exhaust ring 416. One end of the intake ring 415 is rotatably connected to one end of the protective cylinder 31, the end of the spiral shaft 331 is located inside the intake ring 415, and the air supply assembly 42 is rotatably connected to the outside of the intake ring 415.

[0058] In this embodiment, the expansion member 412 is an airbag that expands with gas. In other embodiments, the expansion member 412 is an elastic metal part that expands with hydraulic oil.

[0059] One end of the fixed cylinder 417 is installed in the middle of one end of the exhaust ring 416, and the other end of the fixed cylinder 417 is rotatably connected to and communicates with the collection box 21. The protective cylinder 31, rotating cylinder 411, fixed cylinder 417 and collection box 21 can provide a closed environment during the powder coating process of the steel wire, thereby preventing the spread of dust, and also preventing the wire drawing powder in the expansion member 412 from becoming damp and clumping due to the influence of the external environment.

[0060] The end of the spiral plate 413 is positioned close to the fixed cylinder 417 so that the gap between the steel wire and the spiral plate 413 gradually decreases, thereby increasing the pressure between the steel wire and the drawing powder. A pulley 418 is installed on the outer side of one end of the fixed cylinder 417. A belt drive connects pulley 344 and pulley 418. The diameter of pulley 344 is larger than that of pulley 418 to increase the rotational speed of the rotating cylinder 411.

[0061] Two symmetrically distributed exhaust pipes 419 are installed on the end of the exhaust ring 416 facing the intake ring 415, which are used to release the gas inside the expansion member 412 when necessary. The exhaust pipes 419 are equipped with valves to control the exhaust speed of the expansion member 412, thereby adjusting the degree of expansion of the expansion member 412 to meet the powdering requirements of steel wires of different diameters and materials.

[0062] During the powder coating process on the steel wire, an external air pump supplies air to the air inlet ring 415 through the air supply assembly 42. The gas entering the air inlet ring 415 passes through the through groove 414 into the expansion member 412, causing the expansion member 412 to undergo circumferential and controllable radial expansion. The inflated expansion member 412 can apply radially uniform pressure to the steel wire passing through it, forcibly embedding the drawing powder into the microscopic pits on the surface of the steel wire, forming a dense and lubricating film that is difficult to achieve with traditional brush friction powder coating methods. This avoids defects such as uneven circumferential thickness of the powder layer or localized exposed steel caused by uneven brush pressure or wear.

[0063] During the radial pressure application to the steel wire, motor 341 drives pulley 418 to rotate via pulley 344 on transmission rod 342. Pulley 418 then drives exhaust ring 416 to rotate via fixed cylinder 417. As exhaust ring 416 rotates, it drives rotating cylinder 411, expansion member 412, and multiple spiral plates 413 to rotate synchronously around the steel wire. During rotation, the multiple spiral plates 413 gradually apply pressure to the steel wire, further improving the uniformity of the powder layer on the outer periphery of the wire. This ensures that the drawing powder is evenly distributed on the outer surface of the wire, preventing localized exposed steel or uneven powder distribution, thus guaranteeing the wire drawing effect. Simultaneously, the multiple spiral plates 413 continuously pick up, scatter, and redirect the powder to the surface of the steel wire via their spiral trajectory, forming a dynamic and cyclical powder application process, effectively preventing localized accumulation or uneven powder layer distribution.

[0064] In addition, as the width of the spiral plate 413 gradually increases from the beginning to the end, the gap between the spiral plate 413 and the steel wire is the smallest at the end where the width is the largest. This plays a final finishing and scraping role on the powder layer, ensuring that the powder is fully embedded in the surface of the steel wire and finishing the powder layer at the end of the spiral plate 413. This prevents the powder layer from becoming too thick due to excessive powder accumulation, effectively avoiding the problem of blockage at the entrance of the drawing die 22 caused by excessive powder layer, and improving the stability and reliability of the drawing process.

[0065] like Figure 1 , Figure 4 , Figure 7 and Figure 9 As shown, the air supply assembly 42 includes a collar 421 and an air inlet pipe 422. The collar 421 is rotatably connected to and sealed to the outside of the air inlet ring 415. The bottom end of the air inlet pipe 422 is installed on the top of the collar 421, and the top end of the air inlet pipe 422 passes through the housing 10 and is connected to an external air pump.

[0066] When air is supplied to the expansion member 412, the compressed air output by the external air pump enters the interior of the collar 421 through the air inlet pipe 422, and then enters the expansion member 412 through the air passage of the air inlet ring 415 and the through groove 414 of the expansion member 412, so that the expansion member 412 expands evenly in the rotating cylinder 411, thereby applying uniform radial pressure to the wire drawing powder on the surface of the steel wire.

[0067] like Figures 1 to 2 As shown, the winding mechanism 50 includes a connecting frame 51, a second motor 52, and a winding roller 53. The connecting frame 51 is U-shaped and installed inside the housing 10, while the second motor 52 is installed on the inner bottom wall of the connecting frame 51. The winding roller 53 has a cylindrical structure with anti-slip textures on its surface to prevent the steel wire from slipping during winding. The bottom end of the winding roller 53 is rotatably connected to the top of the connecting frame 51 via a bearing.

[0068] During the wire drawing process, motor 52 starts and drives the winding roller 53 to rotate on the connecting frame 51, thereby pulling the wire forward in the drawing die 22. After being drawn by the drawing die 22, the wire is wound around the surface of the winding roller 53 once and then continues to be conveyed forward. This winding process not only temporarily stores some of the wire, but also allows for precise control of the wire tension by adjusting the rotation speed of the winding roller 53, ensuring that the wire maintains a stable stress state during subsequent drawing operations and effectively reducing the occurrence of wire breakage.

[0069] Working Principle: During the wire drawing operation, motor 341 synchronously drives pulleys 343 and 344 to rotate via transmission rod 342. At this time, pulley 343 drives pulley 333 to rotate, which in turn drives the spiral shaft 331 to rotate inside the protective cylinder 31. Subsequently, an external feeder delivers wire drawing powder into the protective cylinder 31 through feed pipe 32. Driven by the spiral shaft 331, the wire drawing powder enters the protective cylinder 31, passes axially through the air inlet ring 415, and enters the inner cavity of the expansion member 412. Simultaneously, an external air pump delivers compressed gas to the air inlet pipe 422. The gas entering the air inlet pipe 422 passes through the air inlet ring 415 and enters the expansion member 412 to inflate it.

[0070] During the rotation of the spiral shaft 331, the pulley 418 drives the exhaust ring 416 to rotate through the fixed cylinder 417. At this time, the exhaust ring 416 drives the rotating cylinder 411, the expansion member 412, and multiple spiral plates 413 to rotate synchronously.

[0071] During the powder coating process, the steel wire first enters through the inlet hole 332 in the spiral shaft 331, then enters the interior of the expansion member 412 and continues to move forward within the expansion member 412, forming a drawing powder layer on the outer periphery of the steel wire. As the steel wire passes through the expansion member 412, the inflated expansion member 412 applies radial and uniform pressure to the steel wire, forcibly embedding the drawing powder into the microscopic pits on the steel wire surface, forming a dense and adherent lubricating film. Simultaneously, the multiple spiral plates 413 in the expansion member 412 gradually apply pressure to the steel wire, improving the powder coating effect. Furthermore, it further improves the uniformity of the powder layer on the outer periphery of the steel wire, ensuring that the drawing powder is evenly distributed on the outer surface of the steel wire, preventing localized exposed steel or uneven powder distribution, thus guaranteeing the wire drawing effect. Throughout the drawing process, any scattered powder can be collected by the inclined bottom collection box 21 and retrieved for reuse through the box door 23, demonstrating good environmental friendliness and economy.

[0072] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A drawing production apparatus for stainless steel wire, comprising a housing, a collecting box installed in the housing, and a drawing die installed on the collecting box, characterized in that, The collection box is equipped with a powder supply mechanism and a powder loading mechanism. The powder supply mechanism is used to transport the drawing powder to the powder loading mechanism. Inside the housing and on one side of the drawing die, there is a winding mechanism for pulling and winding the steel wire. The powder application mechanism includes a powder application assembly rotatably connected to the powder supply mechanism. The powder application assembly includes a rotating cylinder rotatably connected to the powder supply mechanism, an expansion member disposed on the inner wall of the rotating cylinder, multiple spiral plates disposed around the inner side of the expansion member, an air inlet ring, an air outlet ring, and a fixed cylinder. The expansion member can be inflated and expands, and after expansion, it can apply radially uniform pressure to the steel wire. The spiral plates are evenly distributed circumferentially along the inner wall of the expansion member, and the width of the spiral plates gradually increases from the first end to the last end. The last end of the spiral plates is disposed close to the fixed cylinder. The spiral plates rotate with the rotating cylinder to compact and trim the powder layer. The air inlet ring and the air outlet ring are respectively connected to both ends of the rotating cylinder, and both the air inlet ring and the air outlet ring are connected to the expansion member. Support frames mounted on a collection box are rotatably connected to the outer sides of both ends of the rotating cylinder. The fixed cylinder is connected to the air outlet ring and communicates with the drawing die. An air supply assembly is rotatably connected to the outer side of the air inlet ring. The air supply assembly includes a collar and an air inlet pipe. The collar is rotatably connected to the outside of the air inlet ring and is sealed to the air inlet ring. The air inlet pipe is connected to an external air pump and is used to supply air to the expansion component.

2. The drawing apparatus for stainless steel wire according to claim 1, characterized in that, The powder supply mechanism includes a protective cylinder and a conveying component rotatably disposed inside the protective cylinder. A driving component is connected to the conveying component. When the driving component drives the conveying component to rotate, it conveys the drawing powder forward to the inside of the expansion member.

3. The drawing apparatus for stainless steel wire according to claim 2, characterized in that, The conveying assembly includes a spiral shaft and a pulley. One end of the spiral shaft passes through the protective cylinder and extends to the outside of the protective cylinder. The pulley is installed on the outside of one end of the spiral shaft. The spiral shaft has an inlet hole for the steel wire to pass through.

4. The drawing apparatus for stainless steel wire according to claim 3, characterized in that, The drive assembly includes a motor, a transmission rod, a second pulley, and a third pulley. The transmission rod is installed at the output end of the motor, and the second and third pulleys are respectively installed at both ends of the transmission rod. The first and second pulleys are connected by a belt drive. The motor drives the second and third pulleys to rotate synchronously through the transmission rod, which can simultaneously drive the spiral shaft and the powder application mechanism to rotate.

5. The drawing apparatus for stainless steel wire according to claim 4, characterized in that, The fixed cylinder is equipped with a fourth pulley, and the third pulley is connected to the fourth pulley via a belt.

6. The drawing apparatus for stainless steel wire according to claim 1, characterized in that, The inner bottom wall of the collection box is inclined to collect and recycle scattered powder. A door is provided on one side of the bottom of the collection box for opening the collection box.

7. The drawing apparatus for stainless steel wire according to any one of claims 1-6, characterized in that, The winding mechanism includes a second motor and a winding roller. One end of the winding roller is mounted on the drive shaft of the second motor, and the second motor can drive the winding roller to rotate to pull the steel wire.

Images