Differential transmission control welding wire continuous drawing device
The continuous wire drawing device controlled by differential transmission uses deceleration and speed-increasing structures to adjust the winding and releasing speed of the wire, and combined with the guiding structure to achieve orderly movement of the wire, which solves the problems of wire breakage and low production efficiency, and improves the stability and efficiency of the wire drawing process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN JINQIAO WELDING MATERIAL GRP WUXI CO LTD
- Filing Date
- 2025-04-25
- Publication Date
- 2026-05-01
AI Technical Summary
Existing wire drawing devices are prone to wire breakage during the drawing process, resulting in low production efficiency. Furthermore, the increased rotation radius of the wire winding rollers leads to increased stress on the wire, increasing the risk of breakage.
The continuous wire drawing device with differential transmission control controls the wire winding speed through a deceleration structure and the wire release speed through a speed-increasing structure. Combined with a guiding structure, the wire moves in an orderly manner, reducing the load and stress on the drawing section.
It effectively avoids welding wire breakage, improves production efficiency, ensures orderly winding and release of welding wire, and enhances product quality and production efficiency.
Smart Images
Figure CN224181699U_ABST
Abstract
Description
A differential transmission controlled continuous wire drawing device Technical Field
[0001] This utility model relates to a continuous wire drawing device, specifically a continuous wire drawing device with differential transmission control. Background Technology
[0002] Continuous drawing significantly improves the surface quality and dimensional accuracy of welding wire. During the drawing process, the wire undergoes multiple stretching and compression cycles, resulting in a smoother surface and more precise dimensions, meeting the demands of high-precision machining. Furthermore, the drawing process involves plastic deformation of the wire metal, refining the grain size and improving its mechanical properties and corrosion resistance. The finer grains enhance the wire's strength and toughness, increasing its reliability and lifespan during use. Common drawing equipment includes cold drawing machines.
[0003] The cold drawing machine includes two working rollers: one roller for mounting the unprocessed welding wire roll and the other roller for fixing and winding the welding wire. It also includes a drawing die. In use, the welding wire on the wire roll is passed through the drawing die and fixed on the other roller. When the winding roller rotates, it pulls the welding wire to make the welding wire pass smoothly through the drawing die to complete the processing. During this process, the welding wire roll will rotate synchronously under the pulling action of the welding wire.
[0004] Because the drawing section of the welding wire is the main stress-bearing part, it is subjected to the pulling force of the take-up rollers, the resistance of the drawing die, and the tension that drives the wire coil to rotate. The interaction of these forces makes the welding wire prone to breakage. Furthermore, as the rotation radius of the take-up rollers increases with the increase in wire winding, the drawing speed of the wire drawing section gradually increases, leading to an increase in pulling force. Simultaneously, both the resistance and the pulling force increase with the increase in pulling force, further increasing the risk of wire breakage. When the welding wire breaks, the processes of re-threading and welding significantly reduce production efficiency. Summary of the Invention
[0005] The purpose of this invention is to provide a differential transmission controlled continuous wire drawing device to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A differential transmission controlled continuous wire drawing device, including a chassis;
[0008] The machine housing is equipped with two sets of symmetrically mounted rollers; one roller is used to release the welding wire, and the other roller is used to rewind the welding wire; a mounting plate is slidably mounted on the machine housing between the two rollers; a turntable is mounted on the mounting plate; the turntable has multiple sets of drawing slots with different diameters.
[0009] A motor is fixedly mounted on the casing; a main shaft is fixedly mounted on the output end of the motor; a take-up shaft and a release shaft, respectively connected to two rollers, are rotatably mounted on the casing.
[0010] The main shaft is connected to the winding shaft and the release shaft via a reduction structure and a speed-increasing structure, respectively. When the main shaft rotates, the reduction structure can reduce the transmission ratio between the main shaft and the winding shaft, and the speed-increasing structure can increase the transmission ratio between the main shaft and the release shaft.
[0011] The chassis is also provided with a guide structure; when the main shaft rotates, the guide structure can drive the mounting plate to move back and forth along the length direction of the roller.
[0012] As described above, the differential transmission controlled continuous wire drawing device is as follows: the roller is connected to the winding shaft and the release shaft through a fitting post, the fitting post can slide with the winding shaft and the release shaft; and the fitting post slides with the roller.
[0013] The differential transmission controlled continuous wire drawing device as described above: the reduction structure includes a reduction shaft and a first control shaft rotatably mounted on the housing; the main shaft is connected to the reduction shaft and the first control shaft via belts; symmetrically arranged first half-pulleys are slidably fitted onto the reduction shaft; symmetrically arranged second half-pulleys are slidably fitted onto the winding shaft; the two first half-pulleys and the two second half-pulleys are connected via belts; the first control shaft has two sets of first threaded grooves and two sets of second threaded grooves symmetrically arranged; each of the first threaded grooves is threadedly connected to a first threaded sleeve rotatably connected to the first half-pulley; the second threaded grooves are threadedly connected to a second threaded sleeve rotatably connected to the second half-pulley.
[0014] The differential transmission controlled continuous wire drawing device as described above: the speed-increasing structure includes a speed-increasing shaft and a second control shaft rotatably mounted on the housing; the main shaft, the speed-increasing shaft, and the second control shaft are all connected by belts; a symmetrically arranged third half-pulley is slidably fitted on the speed-increasing shaft; a symmetrically arranged fourth half-pulley is slidably fitted on the release shaft; the two third half-pulleys and the two fourth half-pulleys are connected by belts; the second control shaft has two sets of symmetrically arranged third threaded grooves and two sets of fourth threaded grooves; each third threaded groove is threadedly connected to a third threaded sleeve rotatably connected to the third half-pulley; a fourth threaded groove is threadedly connected to a fourth threaded sleeve rotatably connected to the fourth half-pulley.
[0015] The differential transmission controlled continuous wire drawing device as described above: the guiding structure includes a guide shaft rotatably mounted on the chassis; the guide shaft is connected to the main shaft by a belt; the guide shaft has a first inclined groove and a second inclined groove that are interconnected; the mounting plate is sleeved on the guide shaft, and the mounting plate is fixedly mounted with a protruding post that slides and engages with both the first inclined groove and the second inclined groove.
[0016] The differential transmission controlled continuous wire drawing device described above: both sides of the turntable are provided with multiple sets of guide rollers rotatably mounted on the mounting plate.
[0017] As described above, the differential transmission controlled continuous wire drawing device has the following features: a limiting block is slidably fitted onto the mounting plate; a spring is fixedly installed on the limiting block and fixedly connected to the mounting plate; and multiple sets of limiting grooves that can fit into the limiting block are provided on the turntable.
[0018] As described above, in the differential transmission controlled continuous wire drawing device: the end of the drawing slot near the release shaft has a larger diameter.
[0019] Compared with the prior art, the beneficial effects of this utility model are as follows: by controlling the winding speed of the welding wire through a deceleration structure (the winding shaft speed changes from fast to slow), and by controlling the release speed of the welding wire through a speed-increasing structure (the release shaft speed changes from slow to fast), the working speed changes constantly throughout the continuous drawing process of the welding wire. This reduces the load and stress on the drawing section, effectively improves production efficiency, and prevents welding wire breakage. During the continuous drawing process, the mounting plate moves back and forth along the length of the roller under the guidance of the structure. This allows the welding wire to be released in an orderly manner, avoiding random movement, and also ensures that the welding wire is wound onto the roller in an orderly manner, which is beneficial to the appearance of the product and facilitates the orderly progress of the next step. Attached Figure Description
[0020] Figure 1 is a schematic diagram of the structure of a differential transmission controlled continuous wire drawing device.
[0021] Figure 2 is a structural schematic diagram of the welding wire continuous drawing device controlled by differential transmission from another perspective.
[0022] Figure 3 is a schematic diagram of the main shaft in a differential transmission controlled continuous wire drawing device.
[0023] Figure 4 is a schematic diagram of the structure at point A in Figure 3.
[0024] Figure 5 is a schematic diagram of the structure at point B in Figure 3.
[0025] Figure 6 is a schematic diagram of the interlocking column in the differential transmission controlled continuous wire drawing device.
[0026] Figure 7 is a schematic diagram of the guide shaft in a differential transmission controlled continuous wire drawing device.
[0027] Figure 8 is a schematic diagram of the limit block in the differential transmission controlled continuous wire drawing device.
[0028] In the diagram: 1. Chassis;
[0029] 2. Roller;
[0030] 3. Chimeric column;
[0031] 4. Mounting plate; 401. Protruding column;
[0032] 5. Guide rollers;
[0033] 6. Electric motor;
[0034] 7. Main spindle;
[0035] 8. Reduction shaft; 801. First half pulley
[0036] 9. First control shaft; 901. First threaded groove; 902. Second threaded groove;
[0037] 10. First threaded sleeve;
[0038] 11. Second threaded sleeve;
[0039] 12. Rewinding shaft; 1201. Second half pulley;
[0040] 13. Speed-increasing shaft; 1301. Third half pulley;
[0041] 14. Second control shaft; 1401. Third threaded groove; 1402. Fourth threaded groove;
[0042] 15. Third threaded sleeve;
[0043] 16. Fourth threaded sleeve;
[0044] 17. Release the shaft; 1701. Fourth half pulley;
[0045] 18. Guide shaft; 1801. First inclined groove; 1802. Second inclined groove;
[0046] 19. Turntable; 1901. Drawing groove; 1902. Limiting groove;
[0047] 20. Limit block;
[0048] 21. Spring. Detailed Implementation
[0049] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0050] Please refer to Figures 1 to 8. As an embodiment of this utility model, the differential transmission controlled continuous wire drawing device includes a housing 1.
[0051] Two sets of symmetrically mounted rollers 2 are rotatably arranged on the housing 1; one roller 2 is used to release the welding wire, and the other roller 2 is used to rewind the welding wire; a mounting plate 4 is slidably mounted on the housing 1 between the two rollers 2; a turntable 19 is mounted on the mounting plate 4; the turntable 19 has multiple sets of drawing slots 1901 with different diameters.
[0052] A motor 6 is fixedly installed on the housing 1; a main shaft 7 is fixedly installed on the output end of the motor 6; a winding shaft 12 and a release shaft 17, which are respectively connected to two rollers 2, are rotatably installed on the housing 1.
[0053] The main shaft 7 is connected to the winding shaft 12 and the release shaft 17 respectively through a speed reduction structure and a speed increase structure; when the main shaft 7 rotates, the speed reduction structure can reduce the transmission ratio between the main shaft 7 and the winding shaft 12; and the speed increase structure can increase the transmission ratio between the main shaft 7 and the release shaft 17.
[0054] The housing 1 is also provided with a guide structure; when the main shaft 7 rotates, the guide structure can drive the mounting plate 4 to move back and forth along the length direction of the roller 2.
[0055] In this embodiment, the roller 2 connected to the release shaft 17 is used to mount the unprocessed welding wire roll; the roller 2 connected to the winding shaft 12 is used to wind up the welding wire that has undergone drawing processing.
[0056] After the welding wire roll is installed, the welding wire is passed through the drawing groove 1901 and fixed on the roller 2 connected to the winding shaft 12; subsequently, the welding wire is wound on the roller 2 under the drive of the winding shaft 12, and the continuous drawing process of the welding wire is completed when it passes through the drawing groove 1901.
[0057] The motor 6 is started, which drives the main shaft 7 to rotate. Through the deceleration and speed-increasing structures, the winding shaft 12 and the release shaft 17 are driven to rotate, which in turn drives the two rollers 2 to rotate. When the rollers 2 connected to the winding shaft 12 rotate, they pull the welding wire through the drawing groove 1901. The rotation of the rollers 2 connected to the release shaft 17 can assist in the drawing process and prevent the welding wire from being subjected to excessive force and breaking, thus affecting production.
[0058] During the continuous drawing of the welding wire, the deceleration structure continuously reduces the transmission ratio between the main shaft 7 and the winding shaft 12, thereby continuously reducing the rotational speed of the winding shaft 12. Meanwhile, the protection structure simultaneously and continuously increases the transmission ratio between the main shaft 7 and the release shaft 17, thereby continuously increasing the rotational speed of the release shaft 12. This prevents the welding wire from being continuously wound around the roller 2, causing the rotational radius of the welding wire to gradually increase and the speed at which the welding wire passes through the drawing groove 1901 to gradually increase. At the same time, as the welding wire is drawn, the rotational radius of the welding wire coil gradually decreases, causing the release speed of the welding wire to gradually decrease. This increase and decrease result in an increase in the force on the welding wire in the drawing section, making the welding wire extremely prone to breakage.
[0059] By controlling the winding speed of the welding wire through a deceleration structure (the speed of the winding shaft 12 changes from fast to slow) and the release speed of the welding wire through a speed-increasing structure (the speed of the release shaft 17 changes from slow to fast), the working speed is constantly changing throughout the continuous drawing process of the welding wire. This can reduce the load and stress on the drawing section, effectively improve production efficiency, and prevent welding wire breakage.
[0060] During the continuous drawing process of the welding wire, the mounting plate 4 will move back and forth along the length of the roller 2 under the guidance of the structure. On the one hand, this allows the welding wire to be released in an orderly manner, avoiding the phenomenon of the welding wire moving randomly. On the other hand, it allows the welding wire to be wound up on the roller 2 in an orderly manner, which is beneficial to the appearance of the product and facilitates the orderly progress of the next first process.
[0061] As a further embodiment of this utility model, the roller 2 is connected to the winding shaft 12 and the release shaft 17 by a fitting post 3, the fitting post 3 being slidably engaged with the winding shaft 12 and the release shaft 17; and the fitting post 3 being slidably engaged with the roller 2.
[0062] In this embodiment, the interlocking post 3 and the roller 2, as well as the winding shaft 12 and the release shaft 17, can be slidably separated. After separation, the welding wire roll is installed on the roller 2 connected to the release shaft 17. The interlocking post 3 is then slid through the roller 2 and reconnected to the release shaft 17. When the release shaft 17 rotates, the roller 2 can be driven to rotate through the interlocking post 3.
[0063] After the other fitting post 3 is slidably connected to the winding shaft 12 and the other roller 2, the winding shaft 12 rotates, which can drive the roller 2 to rotate through the fitting post 3, thereby driving the welding wire fixed on the roller 2 to move, so as to wind the welding wire and provide the power to pull the welding wire; when the welding wire on a welding wire roll is continuously pulled and wound on the roller 2 connected to the winding shaft 12, the fitting post 3 is separated from the roller 2 and the winding shaft 12 through sliding fit, so as to facilitate the transfer of the processed welding wire.
[0064] The detachable design facilitates the loading and unloading of welding wire, thereby improving production efficiency.
[0065] As a further embodiment of this utility model, the deceleration structure includes a deceleration shaft 8 and a first control shaft 9 rotatably mounted on the housing 1; the main shaft 7 is connected to the deceleration shaft 8 and the first control shaft 9 by belts; a first half-pulley 801 symmetrically arranged is slidably fitted on the deceleration shaft 8; a second half-pulley 1201 symmetrically arranged is slidably fitted on the winding shaft 12; the two first half-pulleys 801 and the two second half-pulleys 1201 are connected by belts; the first control shaft 9 has two sets of first threaded grooves 901 and two sets of second threaded grooves 902 symmetrically arranged; each of the first threaded grooves 901 is threadedly connected to a first threaded sleeve 10 rotatably connected to the first half-pulley 801; the second threaded grooves 902 are threadedly connected to a second threaded sleeve 11 rotatably connected to the second half-pulley 1201.
[0066] As a further embodiment of this utility model, the speed-increasing structure includes a speed-increasing shaft 13 and a second control shaft 14 rotatably mounted on the housing 1; the main shaft 7 is connected to the speed-increasing shaft 13 and the second control shaft 14 via belts; a third half-pulley 1301 symmetrically arranged is slidably fitted onto the speed-increasing shaft 13; a fourth half-pulley 1701 symmetrically arranged is slidably fitted onto the release shaft 17; the two third half-pulleys 1301 and the two fourth half-pulleys 1701 are connected via belts; the second control shaft 14 has two sets of third threaded grooves 1401 and two sets of fourth threaded grooves 1402 symmetrically arranged; each third threaded groove 1401 is threadedly connected to a third threaded sleeve 15 rotatably connected to the third half-pulley 1301; and a fourth threaded sleeve 16 rotatably connected to the fourth half-pulley 1701 is threadedly connected to the fourth threaded groove 1402.
[0067] In this embodiment, the two first half pulleys 801 and the two second half pulleys 1201 are connected by a belt, which is named a "winding belt". There is a gap between the two first half pulleys 801 and there is also a gap between the two second half pulleys 1201. When the two first half pulleys 801 move away from each other and the two second half pulleys 1201 move closer to each other, the winding belt will gradually move closer to the reduction shaft 8 and away from the winding shaft 12. During this process, the transmission ratio between the reduction shaft 8 and the winding shaft 12 will gradually decrease.
[0068] The two third half-pulleys 1301 and the two fourth half-pulleys 1701 are connected by a belt, which is named the "release belt". There is a gap between the two third half-pulleys 1301 and the two fourth half-pulleys 1701. When the two third half-pulleys 1301 move closer to each other and the two fourth half-pulleys 1701 move further apart, the release belt will gradually move away from the speed-increasing shaft 13 and closer to the release shaft 17. During this process, the transmission ratio between the speed-increasing shaft 13 and the release shaft 17 will gradually increase.
[0069] The two first threaded grooves 901 have opposite thread directions and are symmetrically arranged, and the two second threaded grooves 902 have opposite thread directions and are symmetrically arranged on both sides of the two first threaded grooves 901.
[0070] The threads of the two third threaded grooves 1401 are opposite in direction and are also opposite to the threads of the two first threaded grooves 901; the threads of the two fourth threaded grooves 1402 are opposite in direction and are symmetrically arranged on both sides of the two third threaded grooves 1401, and are also opposite to the threads of the two second threaded grooves 902.
[0071] When the main shaft 7 rotates, it can drive the deceleration shaft 8, the first control shaft 9, the speed-increasing shaft 13, and the second control shaft 14 to rotate.
[0072] Deceleration: In the initial state, the distance between the two first half pulleys 801 is small while the distance between the two second half pulleys 1201 is large. Therefore, the distance between the winding belt and the deceleration shaft 8 is large, while the distance between the winding belt and the winding shaft 12 is small. At this time, the transmission ratio between the deceleration shaft 8 and the winding shaft 12 is large, so the rotational speed of the winding shaft 12 is large.
[0073] When the reduction shaft 8 and the first control shaft 9 rotate, they will drive the two first threaded grooves 901 and the two second threaded grooves 902 to rotate. Through the threaded engagement, the two first threaded sleeves 10 will move away from each other, while the two second threaded sleeves 11 will move closer to each other. This will cause the two first half pulleys 801 to move away from each other and the two second half pulleys 1201 to move closer to each other. At this time, under the combined action of the first half pulleys 801 and the second half pulleys 1201, the winding belt will gradually move closer to the reduction shaft 8 and away from the winding shaft 12. This will cause the transmission ratio between the reduction shaft 8 and the winding shaft 12 to gradually decrease, and the rotational speed of the winding shaft 12 to gradually decrease.
[0074] Speed increase: In the initial state, the distance between the two third half pulleys 1301 is relatively large, while the distance between the two fourth half pulleys 1701 is relatively small; therefore, the distance between the release belt and the speed increase shaft 13 is relatively small, while the distance between the release belt and the release shaft 17 is relatively large. At this time, the transmission ratio between the speed increase shaft 13 and the release shaft 17 is relatively small, so the rotational speed of the winding shaft 17 is relatively small.
[0075] When the speed-increasing shaft 13 and the second control shaft 14 rotate, they will drive the two third threaded grooves 1401 and the two fourth threaded grooves 1402 to rotate. Through the threaded engagement, the two third threaded sleeves 15 will move closer to each other, and the two fourth threaded sleeves 16 will move further away from each other. At this time, under the combined action of the third half pulley 1301 and the fourth half pulley 1701, the release belt will gradually move away from the speed-increasing shaft 13 and closer to the release shaft 17, thereby gradually increasing the transmission ratio between the speed-increasing shaft 13 and the release shaft 17, and thus gradually increasing the speed of the release shaft 17.
[0076] During the winding process of the welding wire on roller 2, the rotation radius of the welding wire on roller 2 gradually increases, thereby increasing the speed at which the welding wire passes through the drawing groove 1901. Meanwhile, the rotation radius of the welding wire coil on the other roller 2 gradually decreases, causing the speed at which the welding wire passes through the drawing groove 1901 to decrease. At this time, the welding wire in the drawing section is subjected to increased stress and is prone to breakage. However, by gradually reducing the winding speed with the deceleration structure and gradually increasing the release speed with the speed-increasing structure, the welding wire drawing speed can be effectively controlled, thereby reducing the stress in the drawing section and effectively preventing the welding wire from breaking.
[0077] As a further embodiment of this utility model, the guiding structure includes a guide shaft 18 rotatably mounted on the chassis 1; the guide shaft 18 is connected to the main shaft 7 by a belt; the guide shaft 18 has a first inclined groove 1801 and a second inclined groove 1802 that are interconnected; the mounting plate 4 is sleeved on the guide shaft 18, and the mounting plate 4 has a protruding post 401 that is slidably fitted with both the first inclined groove 1801 and the second inclined groove 1802.
[0078] In this embodiment, when the main shaft 7 rotates, it will drive the guide shaft 18 to rotate via a belt, thereby driving the first inclined groove 1801 and the second inclined groove 1802 to rotate and slide in cooperation with the protruding post 401.
[0079] When the protruding post 401 slides in the first inclined groove 1801, the mounting plate 4 can move from one end of the roller 2 to the other end under the action of the groove wall of the first inclined groove 1801.
[0080] When the protruding post 401 slides in the second inclined groove 1802, the mounting plate 4 can move along the other end of the roller 2 under the action of the groove wall of the second inclined groove 1802.
[0081] The guide structure drives the mounting plate 4 to move back and forth, thereby driving the turntable 19 to move synchronously. On the one hand, this allows the welding wire to be released in an orderly manner, avoiding the phenomenon of the welding wire moving randomly. On the other hand, it allows the welding wire to be wound up on the roller 2 in an orderly manner, which is beneficial to the appearance of the product and facilitates the orderly progress of the next first process.
[0082] As a further embodiment of this utility model, multiple sets of guide rollers 5 are provided on both sides of the turntable 19 and are rotatably mounted on the mounting plate 4.
[0083] In this embodiment, after the welding wire passes through the drawing groove 1901, it will come into contact with the guide roller 5. The guide roller 5 can make the welding wire pass through the drawing groove 1901 in parallel, so as to avoid the angle of the welding wire passing through the drawing groove 1901 changing during the drawing process, which would result in poor drawing effect.
[0084] As a further embodiment of this utility model, a limiting block 20 is slidably fitted on the mounting plate 4; a spring 21 fixedly connected to the mounting plate 4 is fixedly installed on the limiting block 20; and multiple sets of limiting grooves 1902 that can fit into the limiting block 20 are provided on the turntable 19.
[0085] In this embodiment, the mutual interlocking of the limiting block 20 and the limiting groove 1902 can restrict the rotation of the turntable 19, thereby limiting the position of the drawing slot 1901 and thus preventing the welding wire from breaking.
[0086] When welding wires of different diameters need to be processed, the limiting block 20 slides on the mounting plate 4 when an external force is applied, so that the limiting block 20 separates from the limiting groove 1902 and compresses the spring 21; at this time, the turntable 19 can rotate.
[0087] By rotating the turntable 19 to adjust the position of the drawing slot 1901, a drawing slot 1901 with a suitable diameter can be replaced. After the replacement is completed, the external force is removed so that the spring force of the spring 21 drives the limiting block 20 to move to another limiting slot 1902 and engage with it, thereby restricting the turntable 19.
[0088] As a further improvement of this utility model, the end of the drawing slot 1901 near the release shaft 17 has a larger diameter.
[0089] In this embodiment, this setting facilitates the wire passing through the drawing groove 1901 and reduces the resistance experienced by the wire during continuous drawing, thus preventing the wire from breaking due to increased stress on the wire drawing section caused by the restriction of the drawing groove 1901.
[0090] The above embodiments are exemplary and not restrictive. Therefore, without departing from the spirit or basic characteristics of this utility model, any technical solutions that can be implemented in other specific forms are included in this utility model.
Claims
1. A differential transmission controlled continuous wire drawing device, comprising a housing (1); characterized in that, Two sets of symmetrically mounted rollers (2) are rotatably mounted on the housing (1); one roller (2) is used to release the welding wire, and the other roller (2) is used to rewind the welding wire; a mounting plate (4) is slidably mounted on the housing (1) between the two rollers (2); a turntable (19) is mounted on the mounting plate (4); the turntable (19) has multiple sets of drawing slots (1901) with different apertures; a motor (6) is fixedly mounted on the housing (1); a main shaft (7) is fixedly mounted on the output end of the motor (6); and a shaft connected to the two rollers (2) is rotatably mounted on the housing (1). The main shaft (7) is connected to the winding shaft (12) and the release shaft (17) respectively through a deceleration structure and a speed-increasing structure. When the main shaft (7) rotates, the deceleration structure can reduce the transmission ratio between the main shaft (7) and the winding shaft (12); and the speed-increasing structure can increase the transmission ratio between the main shaft (7) and the release shaft (17). The housing (1) is also provided with a guide structure. When the main shaft (7) rotates, the guide structure can drive the mounting plate (4) to move back and forth along the length direction of the roller (2).
2. The differential transmission controlled continuous wire drawing device according to claim 1, characterized in that, The roller (2) is connected to the winding shaft (12) and the release shaft (17) by a fitting post (3), which can slide with the winding shaft (12) and the release shaft (17); and the fitting post (3) slides with the roller (2).
3. The differential transmission controlled continuous wire drawing device according to claim 1, characterized in that, The deceleration structure includes a deceleration shaft (8) and a first control shaft (9) rotatably mounted on the housing (1); the main shaft (7) is connected to the deceleration shaft (8) and the first control shaft (9) by belts; the deceleration shaft (8) is slidably fitted with symmetrically arranged first half pulleys (801); the winding shaft (12) is slidably fitted with symmetrically arranged second half pulleys (1201); the two first half pulleys (801) and the two second half pulleys (1201) are connected by belts; the first control shaft (9) has two sets of symmetrically arranged first threaded grooves (901) and two sets of second threaded grooves (902); each of the first threaded grooves (901) is threadedly connected to a first threaded sleeve (10) rotatably connected to the first half pulley (801); the second threaded groove (902) is threadedly connected to a second threaded sleeve (11) rotatably connected to the second half pulley (1201).
4. A differential transmission controlled continuous wire drawing device according to claim 3, characterized in that, The speed-increasing structure includes a speed-increasing shaft (13) and a second control shaft (14) rotatably mounted on the chassis (1); the main shaft (7) is connected to the speed-increasing shaft (13) and the second control shaft (14) by belts; a third half-pulley (1301) symmetrically arranged is slidably fitted on the speed-increasing shaft (13); a fourth half-pulley (1701) symmetrically arranged is slidably fitted on the release shaft (17); the two third half-pulleys (1301) and the two... The fourth half pulleys (1701) are connected by a belt; the second control shaft (14) has two sets of third threaded grooves (1401) and two sets of fourth threaded grooves (1402) symmetrically arranged; each of the third threaded grooves (1401) is threaded with a third threaded sleeve (15) that is rotatably connected to the third half pulley (1301); each of the fourth threaded grooves (1402) is threaded with a fourth threaded sleeve (16) that is rotatably connected to the fourth half pulley (1701).
5. A differential transmission controlled continuous wire drawing device according to claim 1, characterized in that, The guiding structure includes a guide shaft (18) rotatably mounted on the chassis (1); the guide shaft (18) is connected to the main shaft (7) by a belt; the guide shaft (18) has a first inclined groove (1801) and a second inclined groove (1802) that are connected end to end; the mounting plate (4) is sleeved on the guide shaft (18), and the mounting plate (4) has a protruding post (401) that is slidably fitted with both the first inclined groove (1801) and the second inclined groove (1802).
6. A differential transmission controlled continuous wire drawing device according to claim 1, characterized in that, Both sides of the turntable (19) are provided with multiple sets of guide rollers (5) that are rotatably mounted on the mounting plate (4).
7. A differential transmission controlled continuous wire drawing device according to claim 1, characterized in that, The mounting plate (4) is slidably fitted with a limiting block (20); a spring (21) fixedly connected to the mounting plate (4) is fixedly installed on the limiting block (20); the turntable (19) has multiple sets of limiting grooves (1902) that can fit into the limiting block (20).
8. A differential transmission controlled continuous wire drawing device according to claim 1, characterized in that, The end of the drawing slot (1901) near the release shaft (17) has a larger diameter.