A production line and equipment for surface finishing of electro-galvanized steel wire

Abstract

This invention discloses a production line and equipment for surface correction of electro-galvanized steel wire, relating to the field of surface correction technology for electro-galvanized steel wire. It includes a functional box, a robotic arm, and a first clamping cylinder. A first servo motor is housed in a protective shell at the top of the outer wall of the functional box. The first servo motor is connected to the robotic arm via a rotating shaft. The robotic arm is connected to a first cylinder via a connecting rod. A first drawing die is mounted on the side of the outer wall of the first cylinder. A second servo motor inside the first cylinder is connected to a transmission shaft via a helical gear set. The transmission shaft is connected to the first clamping cylinder via threads on the outer wall. This invention, by installing a functional box, robotic arm, first cylinder, first clamping cylinder, limit ring, first servo motor, and second servo motor, achieves rapid and safe replacement of the drawing die, avoiding direct contact between workers and the high-temperature die, eliminating the risk of burns, greatly improving production efficiency and safety, and ensuring product quality stability.

Description

Technical Field

[0001] This invention relates to the field of electro-galvanized steel wire surface correction technology, specifically to an electro-galvanized steel wire surface correction production line and equipment. Background Technology

[0002] Electro-galvanized steel wire, as an important metal product, is widely used in important fields such as bridge cables, power cables, and tire bead wire. The surface quality, dimensional accuracy, and mechanical properties of the steel wire directly affect the service life and reliability of the final product. In the final dimensional correction stage of the steel wire, the accuracy and wear condition of the drawing die play a decisive role in the surface quality and diameter uniformity of the steel wire. When the existing production line is worn or the production specifications need to be changed, the machine must be stopped and the drawing die must be disassembled and installed manually. Because the drawing die accumulates a lot of heat during continuous production due to the high speed of the steel wire passing through and plastic deformation, the die is in a high-temperature state. Direct manual disassembly poses a very high risk of burns and seriously threatens the safety of operators. At the same time, the replacement process is not only cumbersome and time-consuming, which seriously affects production efficiency, but also prone to damage to the die due to improper operation or insufficient installation and positioning accuracy during manual assembly and disassembly, resulting in dimensional deviations and surface scratches on the drawn steel wire.

[0003] Patent CN110369544B discloses a steel wire and its manufacturing method. The above patent achieves better corrosion resistance of the steel wire and can obtain higher fatigue resistance compared with steel wires with other coatings.

[0004] The aforementioned patent first prepares a steel wire substrate, then electro-galvanizes the steel wire substrate to obtain electro-galvanized steel wire, heat-treats the electro-galvanized steel wire, and then draws the heat-treated electro-galvanized steel wire to obtain finished steel wire. The finished steel wire has good corrosion resistance and high fatigue resistance, but there is still room for optimization in terms of quick and safe replacement of drawing dies.

[0005] Therefore, this application proposes a production line and equipment for surface correction of electroplated galvanized steel wire that can be automated, quickly and safely changed with drawing dies. Summary of the Invention

[0006] The purpose of this invention is to provide a production line and equipment for surface correction of electro-galvanized steel wire, in order to solve the technical problems mentioned in the background art. When the mold is worn or the production specifications need to be changed, the mold is in a high-temperature state, and direct manual disassembly poses a high risk of burns, which seriously threatens the safety of operators. In addition, during manual assembly and disassembly, improper operation can easily cause damage to the mold or insufficient installation and positioning accuracy, resulting in dimensional deviations and surface scratches on the drawn steel wire.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a production line and equipment for surface correction of electroplated galvanized steel wire, comprising a functional box, a robotic arm, and a first clamping cylinder. A protective shell is provided at the top of the outer wall of the functional box, and a motor slot is provided on the front side of the outer wall of the protective shell. A first servo motor is disposed in the motor slot. The first servo motor is connected to the robotic arm via a rotating shaft. The robotic arm is connected to a first cylinder via a connecting rod. A first drawing die is disposed on the side of the outer wall of the first cylinder. A second servo motor is disposed inside the first cylinder. The second servo motor is connected to a first helical gear via a motor shaft. The first helical gear controls the rotation of a transmission shaft through meshing with the second helical gear. The transmission shaft is connected to the first clamping cylinder via a left-hand thread on the side of the outer wall. The first clamping cylinder is disposed in a first clamping groove of the first cylinder and is used to clamp the first drawing die.

[0008] Preferably, the bottom end of the outer wall of the rotating shaft is located at the top end of the outer wall of the first servo motor. A protrusion is provided on the side of the outer wall of the rotating shaft. The rotating shaft is engaged with the groove on the inner wall of the fixing hole through the protrusion on the side of the outer wall. The fixing hole is located in the middle of the outer wall of the robotic arm. Circular grooves are provided on the outer walls of both ends of the robotic arm. The inner side of the circular groove is engaged with the outer side of the connecting rod. One end of the robotic arm is connected to the first cylinder through the connecting rod, and the other end of the robotic arm is connected to the second cylinder through the connecting rod. A second drawing die is provided on the side of the outer wall of the second cylinder. The size and structure of the second cylinder are the same as those of the first cylinder. Limit rings are provided on the side of the outer walls of both the first and second cylinders. The limit rings are used to fix the first drawing die.

[0009] Preferably, the outer wall of the first cylinder is provided with a first slot and a second slot. The first slot and the second slot are the same size and structure. The first slot is composed of a circular slot and a rectangular slot. The rectangular slot is provided on both sides of the circular slot. The inner wall of the circular slot of the first slot fits into the outer wall of the first locking cylinder. The outer wall of the first locking cylinder is provided with side edges on both sides. The side edges on both sides of the outer wall of the first locking cylinder fits into the rectangular slot of the first slot. A limit block is provided at the bottom of the outer wall of the first locking cylinder. The inner wall of the circular slot of the second slot fits into the outer wall of the second locking cylinder. The second locking cylinder is the same size and structure as the first locking cylinder. The side edges on both sides of the second locking cylinder fit into the rectangular slot of the second slot.

[0010] Preferably, the inner wall of the first engaging cylinder is provided with a threaded groove, which engages with the left-hand thread at the bottom of the drive shaft. The threaded groove of the inner wall of the second engaging cylinder engages with the right-hand thread at the top of the drive shaft. Two limiting discs are provided on the outer wall of the drive shaft, respectively located at the beginning of the left-hand and right-hand threads of the drive shaft. A second helical gear is provided on the outer wall of the drive shaft, with its inner wall engaging with the outer wall of the drive shaft. The gear on the outer side of the second helical gear engages with the first helical gear. The inner wall of the first helical gear engages with the outer wall of the motor shaft. The motor shaft is located on the front side of the outer wall of the second servo motor, and the second servo motor is fixed to the bottom of the inner wall of the first cylinder.

[0011] Preferably, the first drawing die has four second connecting holes on the front side of its outer wall, a positioning cylinder on the rear side of its outer wall, the inner side of the second connecting holes and the outer side of the fixing rod interlock, the fixing rod is located at the front end of the sleeve's outer wall, the inner side of the sleeve interlocks with the outer side of the positioning cylinder, the sleeve is located at the front end of the drawing box's outer wall, and bases are provided on both sides of the drawing box's outer wall, with bolts fixing the bases to the worktable.

[0012] Preferably, a lubrication box is provided at the top of the outer wall of the functional box, a box cover is provided at the top of the outer wall of the lubrication box, a water pump is provided at the front end of the outer wall of the lubrication box, a water pipe is provided in the water pump, one end of the water pipe is connected to the lubrication box, and the other end of the water pipe is three branch pipes. The branch pipes are embedded in the interior of the functional box and connected to three spray heads. The spray heads are provided on the inner side of the front opening of the functional box. Four first connection holes are provided on the outer wall of the rear end of the functional box. The inner side of the first connection hole and the outer side of the fixing rod passing through the second connection hole are mutually fitted.

[0013] Preferably, a recycling trough is provided on the inner side of the front opening of the functional box, a drain pipe is provided on the inner side of the recycling trough, the drain pipe extends out from the outer side of the functional box, and a drain cover is provided at the outlet of the drain pipe.

[0014] Preferably, the bottom of the outer wall of the functional box is provided with four support rods, the outer side of the support rods is provided with through holes, the inner side of the through holes is provided with bearings, the inner side of the bearings is fitted with the outer side of the connecting shaft, the connecting shaft is connected to the drive motor, and wheels are provided at both ends of the outer wall of the connecting shaft.

[0015] Preferably, the outer side of the wheel wall and the inner side of the chute are in contact with each other. The chute is set on the inner side of the outer wall of the chute. Two chutes are set on the top of the outer wall of the workbench. A function box is set on the top of the outer wall of the workbench. The first servo motor is connected to the bus in the function box through the connecting line on the outer side of the outer wall. The second servo motor is connected to the bus in the function box through the connecting line embedded in the connecting rod and the robotic arm. The connecting line on the outer side of the drive motor is connected to the bus in the function box. The connecting line on the outer side of the water pump is connected to the bus. The bus in the function box is connected to the external control console.

[0016] Preferably, the production line includes the following steps:

[0017] S1. Wire laying and heat treatment: The steel wire coil is placed on a non-powered wire laying frame, and the steel wire is drawn out by traction force. The steel wire is heated in a heat treatment furnace and then isothermally cooled in a lead bath.

[0018] S2. Surface cleaning and electroplating: The heat-treated steel wire is sequentially guided through a water washing tank for spray cleaning, through an acid pickling tank to remove surface oxide scale, and through an electrolytic alkaline washing tank for electrochemical deep cleaning. Then it enters an electroplating tank to deposit a uniform and dense zinc layer on the surface of the steel wire.

[0019] S3. Surface correction and lubrication: The electroplated steel wire is guided into the inlet of the functional box, and the surface of the steel wire is atomized and lubricated through the spray head. Then the steel wire passes through the first drawing die for diameter shaping and surface finish correction.

[0020] S4. Die Replacement and Wire Rewinding: When the first drawing die is worn or needs to be replaced, the automated replacement is initiated. The function box moves along the slide and leaves the workstation via the drive motor. The robotic arm is rotated via the first servo motor to switch the second cylinder, which is pre-installed with the second drawing die, to the working position. The function box is then driven to move and reset to complete the installation of the new die. The corrected steel wire is finally wound into a material by the elephant trunk type wire rewinding machine.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. This invention, by installing a first cylinder, a second cylinder, a first engaging cylinder, a second engaging cylinder, a drive shaft, a second servo motor, a first helical gear, a second helical gear, and a limiting ring, achieves automated clamping, release, and rapid replacement of drawing dies. The second servo motor drives the helical gear set, which in turn rotates the drive shaft with positive and negative threads, thereby controlling the synchronous extension or retraction of the two engaging cylinders within the slots of the cylinders. When the engaging cylinders extend, they, together with the limiting ring, form a front-to-back clamping mechanism, firmly fixing the drawing die to the cylinder. When replacement is needed, the engaging cylinders retract to release the die. The placement of the mold avoids direct contact between operators and the mold, which is at a high temperature due to continuous drawing, eliminating the risk of burns and greatly improving operational safety. At the same time, the entire replacement process is driven by a motor, and the clamping or releasing action can be completed within tens of seconds. Compared with the long time required by traditional manual operation, the production efficiency is greatly improved. Meanwhile, the alignment accuracy is ensured by the connecting hole and positioning cylinder, which effectively prevents the mold from being eccentric or loose due to manual installation deviation. This ensures the dimensional stability and surface quality consistency during the wire drawing process, providing a core guarantee for the production of high-quality products.

[0023] 2. This invention, equipped with a robotic arm, a rotating shaft, a first servo motor, and a function box, achieves automated repositioning of old and new drawing dies between workstations. A first cylinder and a second cylinder are respectively installed at both ends of the robotic arm. When a die needs to be replaced, the robotic arm can rotate the first cylinder, already containing the old die, away from the workstation, while simultaneously rotating the second cylinder, pre-loaded with the new die, precisely to the workstation for docking and installation. The die transportation and positioning process is fully automated, eliminating the need for operators to perform heavy and dangerous handling work near high-temperature equipment, resulting in significant safety benefits. Furthermore, the rotational die-changing process can be completed in a very short time, greatly reducing downtime for die changes on the production line and significantly ensuring production continuity and efficiency. Moreover, the robotic arm's rotation is precisely controlled by a servo motor, ensuring perfect alignment between the old and new dies and the fixing rods and sleeves on the drawing box after repositioning. This solves the unavoidable errors associated with manual handling and positioning, laying a solid foundation for subsequent precise installation and stable drawing.

[0024] 3. This invention, by installing a functional box, a lubrication box, a water pump, a spray head, a recycling tank, and a drain pipe, achieves efficient and uniform lubrication and centralized recycling of waste liquid during the steel wire drawing process. When the equipment is working, the water pump pumps out the soap-based emulsion from the lubrication box, and the spray head sprays the lubricant in an atomized form onto the surface of the moving steel wire. The atomized lubrication can form an extremely thin and uniform lubricating film on the surface of the steel wire, which not only significantly reduces the friction and temperature rise during the steel wire drawing process, but also improves the surface quality of the steel wire and extends the life of the die. At the same time, the excess atomized lubricant that fails to adhere to the steel wire is collected by the recycling tank and discharged into the waste liquid tank through the drain pipe. This effectively solves the problems of dirty and messy production environment, slippery ground, and waste liquid pollution caused by lubricant splashing and dripping, and achieves clean and environmentally friendly production.

[0025] 4. This invention, by installing a functional box, support rod, connecting shaft, wheels, drive motor, and slide rail, realizes the automated forward and backward movement of the functional box and the auxiliary installation of the drawing die. The drive motor provides power, which drives the wheels through the connecting shaft, enabling the functional box to move along the slide rail preset on the worktable. This ensures that the first connecting hole on the functional box can be quickly and seamlessly aligned and fitted with the fixing rod on the drawing box, effectively solving the problems of installation difficulties, uneven force on the die, or equipment damage caused by inaccurate positioning, and improving the overall intelligence level and operational reliability of the equipment. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of the first drawing die of the present invention being drawn out from the first cylinder;

[0028] Figure 3 This is a schematic diagram of the first servo motor being pulled out of the functional box according to the present invention.

[0029] Figure 4 This is a schematic diagram of the functional box structure of the present invention;

[0030] Figure 5 This is a schematic diagram of the pull-out box structure of the present invention;

[0031] Figure 6 This is a schematic diagram of the first drawing die of the present invention fitted onto the first cylindrical structure;

[0032] Figure 7 This is a schematic diagram of the locking cylinder being pulled out of the first cylinder according to the present invention;

[0033] Figure 8 This is a schematic diagram of the connection structure between the drive shaft and the locking cylinder of the present invention.

[0034] In the diagram: 1. Functional box; 2. Protective shell; 3. Motor slot; 4. Lubrication box; 5. Water pump; 6. Spray head; 7. Recycling tank; 8. Drain pipe; 9. Support rod; 10. Connecting shaft; 11. Drive motor; 12. Wheel; 13. First connecting hole; 14. First servo motor; 15. Rotating shaft; 16. Robotic arm; 17. Fixing hole; 18. Circular groove; 19. Connecting rod; 20. First cylinder; 21. Limiting ring; 22. First slot; 23. Second slot; 24. First engagement. 25. Second engaging cylinder; 26. Side edge; 27. Limiting block; 28. Drive shaft; 29. ​​Limiting disc; 30. First helical gear; 31. Second helical gear; 32. Motor shaft; 33. Second servo motor; 34. Second cylinder; 35. First drawing die; 36. Second connecting hole; 37. Positioning cylinder; 38. Second drawing die; 39. Drawing box; 40. Base; 41. Sleeve; 42. Fixing rod; 43. Bolt; 44. Worktable; 45. Slide rail; 46. Slide groove. Detailed Implementation

[0035] 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.

[0036] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] Please see Figure 1 and Figure 5An embodiment of the present invention provides a production line and equipment for surface correction of electro-galvanized steel wire. The first drawing die 35 has four second connecting holes 36 on the front side of its outer wall, and a positioning cylinder 37 is provided on the rear side of its outer wall. The inner side of the second connecting holes 36 is fitted with the outer side of the fixing rod 42. The fixing rod 42 is provided at the front end of the outer wall of the sleeve 41. The inner side of the sleeve 41 is fitted with the outer side of the positioning cylinder 37. The sleeve 41 is provided at the front end of the outer wall of the drawing box 39. Bases 40 are provided on both sides of the outer wall of the drawing box 39. Bolts 43 fix the bases 40 to the workbench 44.

[0039] Furthermore, the steel wire coil is first placed on a non-powered pay-off frame. This frame avoids tension fluctuations that might occur with active drive, ensuring smooth pay-off. The winding machine is positioned behind the heat treatment furnace. The wire is drawn from the pay-off frame by the winding machine's traction force. The wire enters the furnace inlet via guide wheels. Once inside, the wire is directly heated by gas, with the gas-air mixture ratio controlled between 1:9 and 1:11. The furnace temperature is maintained between 890°C and 950°C, allowing for rapid heating. After exiting the furnace, the wire immediately enters a lead bath for cooling. The winding machine is then... The steel wire is placed behind the lead bath and is directly immersed into the lead bath from the heat treatment furnace outlet by the traction force of the winding machine. The temperature of the lead liquid in the lead bath is maintained between 500℃ and 570℃. The lead bath improves the toughness and strength of the steel wire. After exiting the lead bath, a small amount of lead residue may be attached to the surface of the steel wire, which needs to be cleaned immediately in the water washing tank. A winding machine is set behind the water washing tank. The steel wire is introduced into the water washing tank by the traction force of the winding machine. The pH of the water in the water washing tank is controlled between 7 and 8. The water washing adopts a spray method, which can remove lead residue and oxides from the surface of the steel wire. The surface of the cleaned steel wire is clean, which prepares it for subsequent acid washing.

[0040] After being drawn from the water washing tank, the steel wire enters the pickling tank, where a hydrochloric acid solution is used, with the pH value controlled between 4 and 6. Pickling removes oxide scale and rust from the steel wire surface and improves surface activity. After pickling, the steel wire surface is metallic and free of oxidation residue. Then, the steel wire enters the electrolytic alkaline washing tank, where an ammonium chloride solution is used, with the concentration maintained at 60-90 g / L. Electrolytic alkaline washing further cleans the steel wire surface through the action of electric current, removing trace amounts of grease and pickling residue. The steel wire acts as the cathode, and an anode plate is installed in the tank. When electricity is applied, an electrolytic reaction occurs. Numerous tiny hydrogen bubbles are generated and released from the surface of the steel wire, creating a violent scouring and scraping effect. This thoroughly removes trace amounts of grease, solid particles, and pickling residues adhering to the surface of the steel wire. After electrolytic alkaline washing, the steel wire is pulled into the electroplating tank. The electroplating tank adopts a structure with an iron cathode support and a lead anode plate. The electroplating solution is a zinc-based electrolyte. By controlling the electrolysis voltage, the current of the steel wire is kept stable within the range of 500 to 700A to ensure uniform deposition of the zinc layer and its ultra-thin thickness. After exiting the tank, a dense zinc layer is formed on the surface of the steel wire. The cleaned steel wire surface is smooth, and the zinc layer is firmly adhered.

[0041] Then the steel wire is pulled into the opening at the front end of the functional box 1. The steel wire passes through the opening and enters the first drawing die 35. The first drawing die 35 slightly shapes the steel wire and corrects the diameter deviation of the steel wire to ensure that the diameter of the finished steel wire is consistent. Then the steel wire passes out from the drawing box 39 and is wound up by the elephant trunk type winding machine to form a neat coil.

[0042] Please see Figure 1 and Figure 4 An embodiment of the present invention provides: a production line and equipment for surface correction of electroplated galvanized steel wire, wherein a lubrication box 4 is provided at the top of the outer wall of the functional box 1, a box cover is provided at the top of the outer wall of the lubrication box 4, a water pump 5 is provided at the front end of the outer wall of the lubrication box 4, a water pipe is provided in the water pump 5, one end of the water pipe is connected to the lubrication box 4, and the other end of the water pipe is three branch pipes, which are embedded in the interior of the functional box 1 and connected to three spray heads 6. The spray heads 6 are provided on the inner side of the front opening of the functional box 1. Four first connection holes 13 are provided on the outer wall of the rear end of the functional box 1. The inner side of the first connection holes 13 is fitted with the outer side of the fixing rod 42 passing through the second connection hole 36. A recycling trough 7 is provided on the inner side of the front opening of the functional box 1. A drain pipe 8 is provided on the inner side of the recycling trough 7. The drain pipe 8 passes out from the outer side of the functional box 1, and a drain cover is provided at the outlet of the drain pipe 8.

[0043] Furthermore, before starting the equipment, the operator first places the waste liquid tank at the drain pipe 8 on the outer side of the functional box 1, opens the drain cover, and collects the waste lubricating liquid in the recovery tank 7 into the waste liquid tank. Then, the drain cover is closed, and the top cover of the lubrication tank 4 is opened to check whether the lubricating liquid is sufficient. The lubricating liquid is a soap-based emulsion. After replenishing the lubricating liquid, the operator starts the equipment, and then the steel wire enters the front opening of the functional box 1. The operator starts the water pump 5 through the control panel. The control panel starts the water pump 5 through the bus and connecting line. After the water pump 5 starts, it draws out the lubricating liquid in the lubrication tank 4 through the water pipe. The lubricating liquid flows to the three branch pipes through the water pipe. Then, the water pump 5 pumps the lubricating liquid in the branch pipes to the spray head 6. The small hole at the front end of the spray head 6 sprays the lubricating liquid in the form of a mist onto the surface of the steel wire. The remaining lubricating liquid flows from the arc-shaped inner wall to the recovery tank 7. After being lubricated, the steel wire enters the first drawing die 35 and is corrected in diameter through the first drawing die 35.

[0044] Please see Figure 1 , Figure 2 , Figure 6 and Figure 8 An embodiment of the present invention provides a production line and equipment for surface correction of electroplated galvanized steel wire. The top of the outer wall of the functional box 1 is provided with a protective shell 2. A first servo motor 14 is provided in the motor slot 3 inside the protective shell 2. The first servo motor 14 is connected to a robotic arm 16 through a rotating shaft 15. The robotic arm 16 is connected to a first cylinder 20 through a connecting rod 19. A first drawing die 35 is provided on the outer side of the first cylinder 20. A second servo motor 33 is provided inside the first cylinder 20. The second servo motor 33 is connected to a first helical gear 30 through a motor shaft 32. The first helical gear 30 controls the rotation of the transmission shaft 28 by meshing with the second helical gear 31. The transmission shaft 28 is connected to a first locking cylinder 24 through a left-hand thread on the outer side of the outer wall. The first locking cylinder 24 is provided in the first locking slot 22 of the first cylinder 20.

[0045] Furthermore, when the mold is severely worn or incompatible and needs to be replaced, the operator first places the new second drawing mold 38 into the second cylinder 34, so that the inner side of the second drawing mold 38 is in contact with the outer wall of the second cylinder 34. At this time, the first engaging cylinder 24 and the second engaging cylinder 25 in the second cylinder 34 are located inside the second cylinder 34 and do not protrude from the second cylinder 34. The robotic arm 16 is in a horizontal position. At this time, the front side of the outer wall of the first drawing mold 35 is in close contact with the rear side of the outer wall of the function box 1, and the rear side of the outer wall of the first drawing mold 35 is in close contact with the front side of the outer wall of the sleeve 41. Then, the operator initiates the replacement command through the control console. The control console first starts the second servo motor 33 in the second cylinder 34 through the bus and connecting line. The start of the second servo motor 33 drives the motor shaft 32 to rotate counterclockwise. The rotation of the motor shaft 32 drives the first helical gear 30 to rotate counterclockwise. The first helical gear 30 and the second helical gear 31 mesh with each other. The rotation of the first helical gear 30 drives the first helical gear 31 to rotate counterclockwise. The second helical gear 31 rotates clockwise. The second helical gear 31 is located on the outer side of the transmission shaft 28. The rotation of the second helical gear 31 drives the transmission shaft 28 to rotate clockwise. A limiting plate 29 is provided on the outer side of the transmission shaft 28. The outer side of the limiting plate 29 is engaged with the inner side of the bearing. The bearing is fixed in the inner wall of the second cylinder 34. The limiting plate 29 restricts the left and right lateral movement of the transmission shaft 28. The clockwise rotation of the transmission shaft 28 causes the first locking cylinder 24 and the second locking cylinder 25 to move outward. The engagement of the side edge 26 with the rectangular groove in the first locking groove 22 converts the rotational movement of the first locking cylinder 24 into axial outward movement, causing the first locking cylinder 24 to extend outward along the first locking groove 22 into the second cylinder 34. At the same time, the clockwise rotation of the transmission shaft 28 causes the second locking cylinder 25 to extend outward along the second locking groove 23 into the second cylinder 34. The parts of the first locking cylinder 24 and the second locking cylinder 25 extending outward from the second cylinder 34 fix the second drawing die 38 in the second cylinder 34.

[0046] Please see Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 An embodiment of the present invention provides a production line and equipment for surface correction of electro-galvanized steel wire. The outer wall of the rotating shaft 15 is provided with a protrusion. The rotating shaft 15 is fitted with the groove of the inner wall of the fixing hole 17 through the protrusion on the outer wall. The fixing hole 17 is located in the middle of the outer wall of the robotic arm 16. Both ends of the robotic arm 16 are provided with circular grooves 18. The inner wall of the circular groove 18 is fitted with the outer wall of the connecting rod 19. One end of the robotic arm 16 is connected to the first cylinder 20 through the connecting rod 19. The other end of the robotic arm 16 is connected to the second cylinder 34 through the connecting rod 19. The inner wall of the second connecting hole 36 is fitted with the outer wall of the fixing rod 42. The fixing rod 42 is located at the front end of the outer wall of the sleeve 41. The inner wall of the sleeve 41 is fitted with the outer wall of the positioning cylinder 37. The outer walls of the pull box 39 are provided with bases 40 on both sides.

[0047] Furthermore, after the second drawing die 38 is fixed, the control console starts the drive motor 11 through the bus and connecting line. The drive motor 11 drives the connecting shaft 10 to rotate counterclockwise. The rotation of the connecting shaft 10 drives the wheel 12 to roll in the slide 46. The rolling of the wheel 12 drives the function box 1 to move forward. At this time, the four first connecting holes 13 on the rear side of the outer wall of the function box 1 disengage outward along the fixing rod 42. The fixing rod 42 and the second connecting hole 36 of the first drawing die 35 are engaged with each other until the wheel 12 rolls to the front of the slide 45. Then the control console controls the drive motor 11 to stop running and starts the first servo motor 14 through the bus and connecting line. The first servo motor 14 drives the rotating shaft 15 to rotate 90 degrees clockwise. The rotating shaft 15 is engaged with the groove on the inner wall of the fixing hole 17 through the protrusion. Thus, the rotation of the rotating shaft 15 drives the robotic arm 16 to rotate 90 degrees clockwise. The rotation of the robotic arm 16 rotates the first cylinder 20 by 90 degrees. At this time, the first cylinder 20 is aligned with the center of the first drawing die 35.

[0048] Then the console restarts drive motor 11, which drives connecting shaft 10 to rotate clockwise. This clockwise rotation of connecting shaft 10 causes wheel 12 to move rearward along slide groove 46. The movement of wheel 12 causes function box 1 to move inward, which in turn causes robotic arm 16 to move inward, thereby moving the first cylinder 20 towards the first drawing die 35. At this point, neither the first engaging cylinder 24 nor the second engaging cylinder 25 inside the first cylinder 20 protrudes. The first cylinder 20 enters along the inner wall of the first drawing die 35 until the limiting ring 21 on the outer side of the first cylinder 20 is in contact with the front side of the outer wall of the first drawing die 35. At this point, the console stops drive motor 11 and starts the second servo motor 33 via the bus and connecting line. The second servo motor 33 drives motor shaft 32 to rotate counterclockwise, which in turn drives the first helical gear 30. The first helical gear 30 rotates, causing the second helical gear 31 to rotate clockwise. The clockwise rotation of the second helical gear 31 causes the transmission shaft 28 to rotate. The rotation of the transmission shaft 28 causes the first locking cylinder 24 and the second locking cylinder 25 to move outward. The limiting block 27 at the bottom of the first locking cylinder 24 and the second locking cylinder 25 cannot extend out of the first locking groove 22 and the second locking groove 23, preventing the first locking cylinder 24 and the second locking cylinder 25 from falling off. When the limiting block 27 is in contact with the inner wall of the first cylinder 20, the second servo motor 33 stops running. The first locking cylinder 24 and the second locking cylinder 25 extend out of the first cylinder 20 along the first locking groove 22 and the second locking groove 23. The extended parts of the first locking cylinder 24 and the second locking cylinder 25 are located on the rear side of the first drawing die 35, and the limiting ring 21 is located on the front side of the first drawing die 35. The first drawing die 35 is fixed front and rear by the first locking cylinder 24 and the limiting ring 21.

[0049] Then the control panel restarts the drive motor 11. After the drive motor 11 starts, it drives the function box 1 to move outward. The outward movement of the function box 1 drives the first cylinder 20 to move outward. At this time, the outer side of the first locking cylinder 24 and the second locking cylinder 25 are in contact with the outer side of the first drawing die 35. The movement of the function box 1 drives the first locking cylinder 24 and the second locking cylinder 25 to move outward. The first locking cylinder 24 and the second locking cylinder 25 drive the first drawing die 35 to move outward along the fixed rod 42 until the wheel 12 moves to the outermost side of the slide 45 and stops. At this time, the first drawing die 35 is completely removed from the fixed rod 42 on the drawing box 39.

[0050] Please see Figure 1 , Figure 2 , Figure 6 , Figure 7 and Figure 8 An embodiment of the present invention provides a production line and equipment for surface correction of electroplated galvanized steel wire. Four support rods 9 are provided at the bottom of the outer wall of the functional box 1. Through holes are provided on the side of the outer wall of the support rods 9, and bearings are provided on the side of the inner wall of the through holes. The side of the inner wall of the bearings is fitted with the side of the outer wall of the connecting shaft 10. The connecting shaft 10 is connected to a drive motor 11. Wheels 12 are respectively provided at both ends of the outer wall of the connecting shaft 10. Four second connecting holes 36 are provided on the front side of the outer wall of the first drawing die 35, and a positioning cylinder 37 is provided on the rear side of the outer wall of the first drawing die 35. The side of the inner wall of the second connecting holes 36 is fitted with the side of the outer wall of the fixing rod 42. The surfaces are interlocked, the fixing rod 42 is set at the front end of the outer wall of the sleeve 41, the inner side of the sleeve 41 is interlocked with the outer side of the positioning cylinder 37, the sleeve 41 is set at the front end of the outer wall of the pull box 39, and the bases 40 are set on both sides of the outer wall of the pull box 39. The bolts 43 fix the bases 40 on the worktable 44. The connecting lines on the outside of the first servo motor 14 and the second servo motor 33 are connected to the bus in the function box 1. The connecting lines on the outer side of the drive motor 11 are connected to the bus in the function box 1. The connecting lines on the outer side of the water pump 5 are connected to the bus. The bus in the function box 1 is connected to the external control console.

[0051] Furthermore, after the first drawing die 35 is pulled out, the control console starts the first servo motor 14 to rotate 180 degrees clockwise via the connecting line. The first servo motor 14 drives the rotating shaft 15 to rotate 180 degrees clockwise. The rotating shaft 15 is engaged with the fixing hole 17 of the robotic arm 16. The rotation of the rotating shaft 15 drives the robotic arm 16 to rotate 180 degrees clockwise. The rotation of the robotic arm 16 rotates the second cylinder 34 at the top to the bottom. At this time, the first cylinder 20 at the bottom of the robotic arm 16 rotates to the top. The first drawing die 35 is fixed on the first cylinder 20, and the second drawing die 38 is fixed on the second cylinder 34. The positioning cylinder 37 on the rear side of the second drawing die 38 is concentrically aligned with the sleeve 41, and the second connecting hole 36 on the second drawing die 38 is concentrically aligned with the fixing rod 42.

[0052] Then, the control console starts the drive motor 11 to rotate clockwise via the connecting cable. The drive motor 11 drives the connecting shaft 10 to rotate, and the rotating connecting shaft 10 drives the wheel 12 to move backward along the slide groove 46. At this time, the fixing rod 42 passes through the second connecting hole 36 on the side of the outer wall of the second drawing die 38. When the rear side of the outer wall of the second drawing die 38 is in contact with the front side of the outer wall of the sleeve 41, the drive motor 11 stops running. At this time, the side of the outer wall of the positioning cylinder 37 is in contact with the side of the inner wall of the sleeve 41. Then, the control console starts the second servo motor 33 inside the second cylinder 34 via the connecting cable. The second servo motor 33 drives the motor shaft 32 to rotate clockwise. The rotation of the motor shaft 32 drives the first helical gear 30 to rotate clockwise. The rotation of the first helical gear 30 drives the second helical gear 31 to rotate counterclockwise. The counterclockwise rotation of the second helical gear 31 drives the wheel 12 to rotate counterclockwise. The drive shaft 28 rotates counterclockwise, and the threaded groove on the inner wall of the first engaging cylinder 24 engages with the left-hand thread on the outer wall of the drive shaft 28. The threaded groove on the inner wall of the second engaging cylinder 25 engages with the right-hand thread on the outer wall of the drive shaft 28. Thus, the counterclockwise rotation of the drive shaft 28 drives the first engaging cylinder 24 and the second engaging cylinder 25 to move inward. The first engaging cylinder 24 and the second engaging cylinder 25 move into the second cylinder 34 along the first slot 22 and the second slot 23, respectively, until the first engaging cylinder 24 and the second engaging cylinder 25 are completely inside the second cylinder 34. At this time, the bottom of the outer wall of the first engaging cylinder 24 and the second engaging cylinder 25 is in contact with the outer wall of the limiting plate 29, restricting the first engaging cylinder 24 and the second engaging cylinder 25 from moving inward. Then, the control console shuts down the second servo motor 33 inside the second cylinder 34 through the connecting line.

[0053] Then, the control console starts the drive motor 11 to rotate counterclockwise via the connecting cable. The drive motor 11 moves the function box 1 outward until the wheel 12 moves to the outermost edge of the slide rail 45 and stops. Then, the control console starts the first servo motor 14, which drives the rotating shaft 15 to rotate 90 degrees clockwise. The rotation of the rotating shaft 15 drives the robotic arm 16 to rotate 90 degrees clockwise, thus adjusting the robotic arm 16 to a horizontal position. Finally, the control console starts the drive motor 11 again to rotate clockwise, moving the function box 1 inward until the rear side of the outer wall of the function box 1 is in close contact with the front side of the outer wall of the second drawing die 38. The first connecting hole 13 on the rear side of the outer wall of the function box 1 is engaged with the fixing rod 42 to firmly fix the second drawing die 38 between the function box 1 and the drawing box 39. The drawing box 39 is fixed to the top of the outer wall of the worktable 44 by the bases 40 on both sides. The bases 40 are fixed to the worktable 44 by bolts 43 to prevent the drawing box 39 from shifting during the wire drawing process. Finally, the second servo motor 33 in the first cylinder 20 is started to retract the first locking cylinder 24 and the second locking cylinder 25. The first drawing die 35 on the first cylinder 20 is removed after being naturally air-dried and cooled, completing the automated and rapid replacement of the drawing die.

[0054] Working principle: First, the steel wire is drawn out from the unpowered wire feeding frame and enters the heat treatment furnace through the guide wheel. After being rapidly heated at 890℃ to 950℃, it is immediately cooled in a lead bath at 500℃ to 570℃ to improve the toughness and strength of the steel wire. After exiting the lead bath, the steel wire is washed with water to remove lead residue, and then enters the pickling tank to remove oxide scale. Subsequently, the surface is further cleaned by electrolytic alkaline washing. The cleaned steel wire enters the electroplating tank, where a uniform ultra-thin zinc layer is deposited under a current of 500 to 700A. Finally, the steel wire enters the functional box 1, and after being lubricated, it passes through the drawing die for surface shaping and diameter correction. Finally, it is wound into a neat coil by the elephant trunk type take-up machine.

[0055] When the steel wire enters the opening at the front of the functional box 1, the operator starts the water pump 5 through the control panel. The water pump 5 pumps the soap-based emulsion in the lubrication box 4 into the three spray nozzles 6 through the water pipe. After the lubricating liquid is atomized, it is evenly sprayed on the surface of the steel wire, which plays a role in lubrication and cooling. Then the remaining lubricating liquid flows into the recycling tank 7 along the inner wall of the functional box 1 and is discharged and collected through the drain pipe 8. The lubricated steel wire then passes through the first drawing die 35. The first drawing die 35 applies slight drawing and shaping to the lubricated steel wire to correct the diameter deviation and ensure the consistency of the finished product diameter and the surface finish.

[0056] When the mold is worn or needs to be changed, the operator places the second drawing mold 38 onto the second cylinder 34. The robotic arm 16 is in a horizontal position, and the first drawing mold 35 is tightly attached between the function box 1 and the drawing box 39. Then, the new mold is fixed. The control console starts the second servo motor 33 inside the second cylinder 34, which drives the transmission shaft 28 to rotate through the helical gear set. This causes the first locking cylinder 24 and the second locking cylinder 25 to extend outward along the locking groove, fixing the second drawing mold 38 onto the second cylinder 34. Then, the old mold is removed. The mold, driven by motor 11, moves the function box 1 forward, causing the first connecting hole 13 to disengage from the fixing rod 42. The first servo motor 14 drives the robotic arm 16 to rotate 90 degrees clockwise, aligning the first cylinder 20 with the first drawing mold 35. Then, the function box 1 moves backward, causing the first cylinder 20 to engage with the first drawing mold 35. The second servo motor 33 drives the locking cylinder to extend, locking the first drawing mold 35 from the rear. Then, the function box 1 moves outward again, using the locking cylinder to disengage the first drawing mold 35 from the fixing rod 42. The entire assembly of the fixed rod 42 is pulled out, and finally, the new mold is repositioned and installed. The robotic arm 16 rotates 180 degrees, causing the second drawing mold 38 on the second cylinder 34 to rotate downwards and align with the drawing box 39. Then, the function box 1 moves inwards, allowing the fixed rod 42 to pass through the second connecting hole 36 of the second drawing mold 38. At the same time, the positioning cylinder 37 is inserted into the sleeve 41. Then, the second servo motor 33 in the second cylinder 34 reverses, causing the locking cylinder to retract and releasing the second drawing mold 38. The function box 1 then moves outwards, and the robotic arm 1 rotates 180 degrees, causing the second drawing mold 38 to retract. Arm 16 continues to rotate 90 degrees to return to horizontal, and function box 1 moves inward again, pressing the second drawing die 38 tightly between function box 1 and drawing box 39 to complete the fixation. Then, the locking cylinder inside the first cylinder 20 retracts, and the first drawing die 35 is removed after natural cooling. Through the integrated production line layout of heat treatment, surface treatment, electroplating, lubrication and drawing correction and the automatic and rapid die changing equipment, efficient, precise and continuous surface correction of electroplated galvanized steel wire is achieved, which significantly improves product quality and production efficiency.

[0057] 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.

Claims

1. A surface correction device for electroplated galvanized steel wire, comprising a functional box (1), a robotic arm (16), and a first clamping cylinder (24), characterized in that: The top of the outer wall of the functional box (1) is provided with a protective shell (2). A motor slot (3) is provided on the front side of the outer wall of the protective shell (2). A first servo motor (14) is provided in the motor slot (3). The first servo motor (14) is connected to the robotic arm (16) through a rotating shaft (15). The robotic arm (16) is connected to the first cylinder (20) through a connecting rod (19). A first drawing die (35) is provided on the side of the outer wall of the first cylinder (20). A second servo motor is provided inside the first cylinder (20). The second servo motor (33) is connected to the first helical gear (30) through the motor shaft (32). The first helical gear (30) controls the rotation of the transmission shaft (28) by meshing with the second helical gear (31). The transmission shaft (28) is connected to the first locking cylinder (24) through the left-hand thread on the outer wall side. The first locking cylinder (24) is set in the first slot (22) of the first cylinder (20). The first locking cylinder (24) is used to lock the first drawing die (35). The bottom end of the outer wall of the rotating shaft (15) is located at the top end of the outer wall of the first servo motor (14). A protrusion is provided on the side of the outer wall of the rotating shaft (15). The rotating shaft (15) is engaged with the groove on the inner wall of the fixing hole (17) through the protrusion on the side of the outer wall. The fixing hole (17) is located in the middle of the outer wall of the robotic arm (16). Circular grooves (18) are provided on the outer walls of both ends of the robotic arm (16). The inner side of the circular groove (18) is engaged with the outer side of the connecting rod (19). The robotic arm (16) One end of the robotic arm (16) is connected to the first cylinder (20) via a connecting rod (19), and the other end of the robotic arm (16) is connected to the second cylinder (34) via a connecting rod (19). The second cylinder (34) has a second drawing die (38) on its outer wall side. The second cylinder (34) has the same size and structure as the first cylinder (20). Both the first cylinder (20) and the second cylinder (34) have limit rings (21) on their outer walls side. The limit rings (21) are used to fix the first drawing die (35). The outer wall side of the first cylinder (20) is provided with a first slot (22) and a second slot (23), and the top of the outer wall of the functional box (1) is provided with a lubrication box (4).

2. The surface correction equipment for electroplated galvanized steel wire according to claim 1, characterized in that: The first slot (22) and the second slot (23) have the same structure and size. The first slot (22) is composed of a circular slot and a rectangular slot. The rectangular slot is set on the side of both ends of the circular slot. The inner side of the circular slot of the first slot (22) is fitted with the outer side of the first locking cylinder (24). The outer side of the first locking cylinder (24) is provided with side edges (26). The side edges (26) on both sides of the outer side of the first locking cylinder (24) are fitted with the rectangular slot of the first slot (22). The bottom of the outer side of the first locking cylinder (24) is provided with a limit block (27). The inner side of the circular slot of the second slot (23) is fitted with the outer side of the second locking cylinder (25). The size and structure of the second locking cylinder (25) are the same as those of the first locking cylinder (24). The side edges (26) on both sides of the second locking cylinder (25) are fitted with the rectangular slot of the second slot (23).

3. The surface correction equipment for electroplated galvanized steel wire according to claim 2, characterized in that: The inner wall of the first engaging cylinder (24) is provided with a threaded groove. The threaded groove of the inner wall of the first engaging cylinder (24) meshes with the left-hand thread at the bottom of the transmission shaft (28). The threaded groove of the inner wall of the second engaging cylinder (25) meshes with the right-hand thread at the top of the transmission shaft (28). Two limiting discs (29) are provided on the outer wall of the transmission shaft (28), respectively located at the beginning of the left-hand thread and the right-hand thread of the transmission shaft (28). A second slanted gear (31) is provided on the outer wall of the transmission shaft (28). The inner wall of the second slanted gear (31) is engaged with the outer wall of the transmission shaft (28). The gear on the outer side of the second slanted gear (31) meshes with the first slanted gear (30). The inner wall of the first slanted gear (30) is engaged with the outer wall of the motor shaft (32). The motor shaft (32) is located on the front side of the outer wall of the second servo motor (33). The second servo motor (33) is fixed at the bottom of the inner wall of the first cylinder (20).

4. The surface correction equipment for electroplated galvanized steel wire according to claim 1, characterized in that: The first drawing die (35) has four second connecting holes (36) on the front side of its outer wall, and a positioning cylinder (37) is provided on the rear side of its outer wall. The inner side of the second connecting hole (36) is fitted with the outer side of the fixing rod (42). The fixing rod (42) is located at the front end of the outer wall of the sleeve (41). The inner side of the sleeve (41) is fitted with the outer side of the positioning cylinder (37). The sleeve (41) is located at the front end of the outer wall of the drawing box (39). Bases (40) are provided on both sides of the outer wall of the drawing box (39). Bolts (43) fix the bases (40) on the worktable (44).

5. The surface correction equipment for electroplated galvanized steel wire according to claim 1, characterized in that: The top of the outer wall of the lubrication box (4) is provided with a box cover. The front end of the outer wall of the lubrication box (4) is provided with a water pump (5). A water pipe is provided in the water pump (5). One end of the water pipe is connected to the lubrication box (4). The other end of the water pipe is three branch pipes. The branch pipes are embedded in the interior of the function box (1) and connected to three spray heads (6). The spray heads (6) are located on the inner side of the front opening of the function box (1). The outer wall of the rear end of the function box (1) is provided with four first connection holes (13). The inner side of the first connection hole (13) is fitted with the outer side of the fixing rod (42) that passes through the second connection hole (36).

6. The surface correction equipment for electroplated galvanized steel wire according to claim 5, characterized in that: The inner wall side of the front opening of the functional box (1) is provided with a recycling trough (7), the inner wall side of the recycling trough (7) is provided with a drain pipe (8), the drain pipe (8) passes through the outer wall side of the functional box (1), and a drain cover is provided at the outlet of the drain pipe (8).

7. The surface correction equipment for electroplated galvanized steel wire according to claim 6, characterized in that: The functional box (1) has four support rods (9) at the bottom of its outer wall. The support rods (9) have through holes on their outer side. The inner side of the through holes has bearings. The inner side of the bearings fits into the outer side of the connecting shaft (10). The connecting shaft (10) is connected to the drive motor (11). The two ends of the outer wall of the connecting shaft (10) are respectively equipped with wheels (12).

8. The surface correction equipment for electroplated galvanized steel wire according to claim 7, characterized in that: The outer side of the wheel (12) is in contact with the inner side of the chute (46). The chute (46) is located on the inner side of the outer wall of the slide (45). The two slides (45) are located at the top of the outer wall of the workbench (44). A function box (1) is located at the top of the outer wall of the workbench (44). The first servo motor (14) is connected to the bus in the function box (1) through the connecting line on the outer side of the outer wall. The second servo motor (33) is connected to the bus in the function box (1) through the connecting line embedded in the connecting rod (19) and the robotic arm (16). The connecting line on the outer side of the drive motor (11) is connected to the bus in the function box (1). The connecting line on the outer side of the water pump (5) is connected to the bus. The bus in the function box (1) is connected to the external control console.

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