Multi-stage speed reduction transmission mechanism in wire drawing machine
By replacing the gearbox with a multi-stage synchronous belt system in the wire drawing machine, the problem of high maintenance costs caused by wear of transmission gears was solved, and low-cost, high-efficiency wire drawing production was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-20
- Publication Date
- 2026-03-31
AI Technical Summary
The gearbox transmission gears of the geared motor in the existing wire drawing machine require regular lubrication. After wear, the maintenance cost is high, resulting in long downtime and affecting production efficiency.
A multi-stage synchronous belt system is used to replace the gearbox. Multi-stage speed reduction transmission is achieved through synchronous pulleys and synchronous belts, which reduces the speed and increases the torque. The synchronous belt is easy to replace and does not require lubrication, resulting in low maintenance costs.
It achieves high-precision wire drawing while reducing maintenance and repair costs, minimizing downtime, and improving production efficiency.
Smart Images
Figure CN224064779U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to wire drawing machines, and more particularly to multi-stage reduction transmission mechanisms in wire drawing machines. Background Technology
[0002] A wire drawing machine is a device that draws various wires into fine filaments of the required specifications. The machine frame contains a first shaft, a second shaft, and a third shaft, all rotatably connected to the frame via bearings. The first and second shafts are equipped with pulleys, while the third shaft has a guide wheel. A geared motor is mounted on the frame, driving the first, second, and third shafts to rotate. During the wire drawing process, the gearbox in the geared motor converts the high-speed, low-torque output of the motor into a low-speed, high-torque output, providing the pulleys with the appropriate drawing force for high-precision drawing. However, during the use of the geared motor, the transmission gears in the gearbox require regular lubrication. Poor lubrication or the intrusion of impurities can easily cause wear on the transmission gears. When the transmission gears are worn, the entire gearbox of the geared motor needs to be disassembled and replaced, resulting in high maintenance costs and long maintenance cycles. This can lead to prolonged downtime of the entire wire drawing machine, impacting production efficiency. Utility Model Content
[0003] The purpose of this invention is to provide a low-cost, easy-to-maintain multi-stage reduction transmission mechanism for wire drawing machines.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a multi-stage reduction transmission mechanism in a wire drawing machine, comprising: a frame, in which a first rotating shaft, a second rotating shaft, and a third rotating shaft are rotatably arranged; a pulley is fixedly connected to both the first and second rotating shafts; a guide wheel is fixedly connected to the third rotating shaft; a first synchronous pulley is rotatably arranged on the first rotating shaft; a second synchronous pulley is fixedly connected to the first synchronous pulley; a third synchronous pulley is fixedly arranged on the first rotating shaft; a fourth, fifth, and sixth synchronous pulleys are sequentially fixedly arranged on the second rotating shaft; and a seventh synchronous pulley is fixedly arranged on the third rotating shaft. A motor is mounted on the frame, and an eighth synchronous pulley is fixedly mounted on the output shaft of the motor. The second synchronous pulley is connected to the eighth synchronous pulley via a first synchronous belt. The first synchronous pulley is connected to the fourth synchronous pulley via a second synchronous belt. The third synchronous pulley is connected to the sixth synchronous pulley via a third synchronous belt. The fifth synchronous pulley is connected to the seventh synchronous pulley via a fourth synchronous belt. All synchronous pulleys have the same module. The diameter of the first synchronous pulley is smaller than that of the fourth synchronous pulley, the diameter of the second synchronous pulley is larger than that of the eighth synchronous pulley, the diameter of the third synchronous pulley is larger than that of the sixth synchronous pulley, and the diameter of the fifth synchronous pulley is larger than that of the seventh synchronous pulley.
[0005] Furthermore, in the aforementioned multi-stage reduction transmission mechanism of the wire drawing machine, the connection structure between the first synchronous pulley and the second synchronous pulley is as follows: a sleeve shaft extends from the first synchronous pulley, the second synchronous pulley is fitted onto the sleeve shaft and abuts against the teeth of the first synchronous pulley, and several threaded holes are evenly distributed around the joint between the second synchronous pulley and the sleeve shaft, with threaded screws connected to the threaded holes.
[0006] Furthermore, in the aforementioned multi-stage reduction transmission mechanism of the wire drawing machine, a first top sleeve is fixedly installed on the first rotating shaft, and an inner bearing is respectively installed at the front and rear ends of the first synchronous pulley. The two inner bearings are installed on the first rotating shaft, with the inner ring of the inner bearing located on the front side abutting against the first top sleeve. A bushing is installed on the first rotating shaft, with both ends of the bushing abutting against the inner rings of the two inner bearings respectively. A third synchronous pulley is installed on the first rotating shaft and connected by a flat key. The third synchronous pulley abuts against the inner ring of the inner bearing located on the rear side. A set of first top nuts is threadedly connected to the first rotating shaft.
[0007] Furthermore, in the aforementioned multi-stage reduction transmission mechanism of the wire drawing machine, a second top sleeve is fixedly installed on the second rotating shaft, a fourth synchronous pulley is fitted on the second rotating shaft and abuts against the second top sleeve, a fifth synchronous pulley is fitted on the second rotating shaft and abuts against the fourth synchronous pulley, and a sixth synchronous pulley is fitted on the second rotating shaft and abuts against the fifth synchronous pulley. The fourth, fifth, and sixth synchronous pulleys are all fixedly connected to the second rotating shaft via the same flat key, and a set of second top nuts are threaded onto the second rotating shaft.
[0008] Furthermore, in the aforementioned multi-stage reduction transmission mechanism of the wire drawing machine, a third top sleeve is fixedly installed on the third rotating shaft, a seventh synchronous pulley is fitted on the third rotating shaft and abuts against the third top sleeve, the seventh synchronous pulley and the third rotating shaft are connected by a flat key, and a set of third top nuts are threadedly connected to the third rotating shaft.
[0009] Furthermore, in the aforementioned multi-stage reduction transmission mechanism of the wire drawing machine, a first stop is provided on both sides of the second synchronous pulley, a second stop is provided on both sides of the third synchronous pulley, a third stop is provided on both sides of the fourth synchronous pulley, and a fourth stop is provided on both sides of the seventh synchronous pulley.
[0010] The advantages of this invention are as follows: the price of the synchronous belt system is lower than that of a gearbox of the same power, and a single motor can reduce the speed and increase the torque to achieve high-precision wire drawing. Although the synchronous belt in the synchronous belt system is a wear part, the cost of replacing the synchronous belt is much lower than the maintenance cost of the transmission gear inside the gearbox, and there is no need to add lubricant regularly, so the later maintenance cost is also relatively low. The synchronous pulleys and synchronous belts in the synchronous belt system are all standard parts, and when damage occurs, spare parts can be quickly found for independent replacement, reducing the maintenance cycle and not affecting production efficiency. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the multi-stage reduction transmission mechanism in the wire drawing machine described in this utility model.
[0012] Figure 2 yes Figure 1 A schematic diagram of the connection structure between the first rotating shaft and the first, second, and third synchronous pulleys.
[0013] Figure 3 yes Figure 1 A schematic diagram of the connection structure between the second rotating shaft and the fourth, fifth, and sixth synchronous pulleys.
[0014] Figure 4 yes Figure 1 A schematic diagram of the connection structure between the third rotating shaft and the seventh synchronous pulley. Detailed Implementation
[0015] The technical solution of this utility model will be further described below with reference to the accompanying drawings and preferred embodiments.
[0016] like Figures 1-4 As shown, the multi-stage reduction transmission mechanism in the wire drawing machine of this utility model includes: a frame 1, in which a first rotating shaft 2, a second rotating shaft 3 and a third rotating shaft 4 are rotatably arranged; a pulley 5 is fixedly connected to the first rotating shaft 2 and the second rotating shaft 3; a guide wheel 6 is fixedly connected to the third rotating shaft 4; a motor 7 is arranged on the frame 1; an eighth synchronous pulley 71 is fixedly arranged on the output shaft of the motor 7; and a plurality of set bolts 72 are evenly distributed on the circumferential wall of the eighth synchronous pulley 71, and the set bolts 72 are fastened to the output shaft.
[0017] A first synchronous pulley 21 is rotatably mounted on a first rotating shaft 2. A second synchronous pulley 22 is fixedly connected to the first synchronous pulley 21. The connection structure between the first synchronous pulley 21 and the second synchronous pulley 22 is as follows: a sleeve shaft 211 extends from the first synchronous pulley 21, and the second synchronous pulley 22 is fitted onto the sleeve shaft 211 and abuts against the teeth of the first synchronous pulley 21. Several threaded holes 212 are evenly distributed around the joint between the second synchronous pulley 22 and the sleeve shaft 211, and threaded screws 213 are threaded into the threaded holes 212. When the first synchronous pulley 21 rotates, it can drive the second synchronous pulley 22 to rotate together. A third synchronous pulley 23 is fixedly mounted on the first rotating shaft 2. The connection structure between the first synchronous pulley 21, the third synchronous pulley 23, and the first rotating shaft 2 is as follows. The first top sleeve 24 is fixedly installed on the first rotating shaft 2. An inner bearing 25 is respectively installed at the front and rear ends of the first synchronous pulley 21. The two inner bearings 25 are installed on the first rotating shaft 2. The inner ring of the inner bearing 25 located on the front side abuts against the first top sleeve 24. When the inner bearing 25 located on the front side abuts against the first top sleeve 24, the second synchronous pulley 22 is aligned with the eighth synchronous pulley 71 on the motor 7. A bushing 26 is installed on the first rotating shaft 2. The two ends of the bushing 26 abut against the inner rings of the two inner bearings 25 respectively. A third synchronous pulley 23 is installed on the first rotating shaft 2 and connected by a flat key. The third synchronous pulley 23 abuts against the inner ring of the inner bearing 25 located on the rear side. A set of first top nuts 27 are threadedly connected to the first rotating shaft 2.
[0018] A fourth synchronous pulley 31, a fifth synchronous pulley 32, and a sixth synchronous pulley 33 are sequentially fixed on the second rotating shaft 3. The connection structure between the second rotating shaft 3 and the fourth synchronous pulley 31, the fifth synchronous pulley 32, and the sixth synchronous pulley 33 is as follows: a second top sleeve 34 is fixedly installed on the second rotating shaft 3; the fourth synchronous pulley 31 is fitted onto the second rotating shaft 3 and abuts against the second top sleeve 34, so that the fourth synchronous pulley 31 is aligned left and right with the first synchronous pulley 21; the fifth synchronous pulley 32 is fitted onto the second rotating shaft 3 and abuts against the fourth synchronous pulley 31; the sixth synchronous pulley 33 is fitted onto the second rotating shaft 3 and abuts against the fifth synchronous pulley 32, so that the sixth synchronous pulley 33 is aligned left and right with the third synchronous pulley 23; the fourth synchronous pulley 31, the fifth synchronous pulley 32, and the sixth synchronous pulley 33 are all fixedly connected to the second rotating shaft 3 by the same flat key; a set of second top nuts 35 are threaded onto the second rotating shaft 3.
[0019] A seventh synchronous pulley 41 is fixedly mounted on the third rotating shaft 4, and a third top sleeve 42 is fixedly mounted on the third rotating shaft 4. The seventh synchronous pulley 41 is fitted onto the third rotating shaft 4 and abuts against the third top sleeve 42, so that the seventh synchronous pulley 41 and the fifth synchronous pulley 32 are aligned left and right. The seventh synchronous pulley 41 and the third rotating shaft 4 are connected by a flat key. A set of third top nuts 43 are threadedly connected to the third rotating shaft 4.
[0020] The second synchronous pulley 22 is connected to the eighth synchronous pulley 71 via the first synchronous belt 11. The first synchronous pulley 21 is connected to the fourth synchronous pulley 31 via the second synchronous belt 12. The third synchronous pulley 23 is connected to the sixth synchronous pulley 33 via the third synchronous belt 13. The fifth synchronous pulley 32 is connected to the seventh synchronous pulley 41 via the fourth synchronous belt 14. All synchronous pulleys have the same module, which ensures accurate meshing of all synchronous pulleys and avoids vibration or skipping of teeth on the synchronous belt due to pitch error. The diameter of the first synchronous pulley 21 is smaller than that of the fourth synchronous pulley 31, the diameter of the second synchronous pulley 22 is larger than that of the eighth synchronous pulley 71, the diameter of the third synchronous pulley 23 is larger than that of the sixth synchronous pulley 33, and the diameter of the fifth synchronous pulley 32 is larger than that of the seventh synchronous pulley 41.
[0021] Motor 7 drives the eighth synchronous pulley 71 to rotate. The eighth synchronous pulley 71 drives the second synchronous pulley 22 to rotate together via the first synchronous belt 11. Since the diameter of the second synchronous pulley 22, which is the driven pulley, is larger than the diameter of the eighth synchronous pulley 71, which is the driving pulley, the transmission ratio between the second synchronous pulley 22 and the eighth synchronous pulley 71 is greater than 1. The eighth synchronous pulley 71 and the second synchronous pulley 22 achieve the first stage of speed reduction. The second synchronous pulley 22 reduces its speed and increases its torque. When the second synchronous pulley 22 rotates, it will drive the first synchronous pulley 21 to rotate together. However, due to the inner bearing 25... The function is as follows: the first rotating shaft 2 does not rotate; the first synchronous pulley 21 drives the fourth synchronous pulley 31 to rotate together via the second synchronous belt 12. Since the diameter of the fourth synchronous pulley 31, which is the driven pulley, is larger than the diameter of the first synchronous pulley 21, which is the driving pulley, the transmission ratio between the fourth synchronous pulley 31 and the first synchronous pulley 21 is greater than 1. This achieves a second-stage speed reduction between the fourth synchronous pulley 31 and the first synchronous pulley 21, further reducing the speed and increasing the torque. When the fourth synchronous pulley 31 rotates, it drives the second rotating shaft 3 to rotate together. The second rotating shaft 3... The fifth synchronous pulley 32 and the sixth synchronous pulley 33 will also rotate together. The sixth synchronous pulley 33 drives the third synchronous pulley 23 to rotate together via the third synchronous belt 13. Since the diameter of the third synchronous pulley 23, which is the driven pulley, is larger than the diameter of the sixth synchronous pulley 33, which is the driving pulley, the transmission ratio between the third synchronous pulley 23 and the sixth synchronous pulley 33 is greater than 1. The third synchronous pulley 23 and the sixth synchronous pulley 33 achieve a third-stage reduction. The third synchronous pulley 23 further reduces the speed and further increases the torque. The third synchronous pulley 23 drives the first rotating shaft 2 to rotate together. The rotational speed of shaft 2 is lower than that of shaft 3. The fifth synchronous pulley 32 drives the seventh synchronous pulley 41 to rotate together via the fourth synchronous belt 14. Since the diameter of the seventh synchronous pulley 41 (the driven pulley) is smaller than that of the fifth synchronous pulley 32 (the driving pulley), the transmission ratio between them is less than 1. This results in an increase in speed between the seventh and fifth synchronous pulleys. The seventh synchronous pulley 41 increases its rotational speed and decreases its torque, driving the third shaft 4 to rotate together. The rotational speed of the third shaft 4 is higher than that of shaft 3. Commercially available wire drawing machines require a geared motor to achieve high-precision wire drawing by reducing rotational speed and increasing torque. However, in this embodiment, the gearbox can be omitted, and a single motor 7 can achieve the same effect of reducing rotational speed and increasing torque to achieve high-precision wire drawing. Furthermore, this method is low-cost, easy to install, requires no regular lubrication, and has low maintenance costs.Furthermore, during the wire drawing process, the second shaft 3 is affected by the first and second stage deceleration, while the first shaft 2 is affected by the first, second, and third stage deceleration. The rotational speed of the first shaft 2 is lower than that of the second shaft 3, but the torque of the first shaft 2 is greater than that of the second shaft 3. The third shaft 4, after being affected by the first and second stage deceleration, is also affected by the speed increase. The rotational speed of the third shaft 4 is higher than that of the second shaft 3, but the torque of the third shaft 4 is less than that of the second shaft 3. When the wire is wound on the pulley 5 of the first shaft 2, the first... The pulley 5 on the first shaft 2 has the maximum torque, providing initial strong tension and effectively overcoming the resistance of plastic deformation of the wire. After being pulled by the pulley 5 on the first shaft 2, the wire is wound around the pulley 5 on the second shaft 3. Although the tension is reduced, medium-speed tension is achieved through the speed difference between the first shaft 2 and the second shaft 3. After being pulled by the pulley 5 on the second shaft 2, the wire is wound around the guide wheel 6 on the third shaft 4 and continues to be stretched through the speed difference. It also has a tensioning effect on the wire. The pulling force is gradually increased through the speed difference, thus improving the wire pulling effect.
[0022] In this embodiment, first retaining edges 221 are provided on both side walls of the second synchronous pulley 22, second retaining edges 231 are provided on both side walls of the third synchronous pulley 23, third retaining edges 311 are provided on both side walls of the fourth synchronous pulley 31, and fourth retaining edges 411 are provided on both side walls of the seventh synchronous pulley 41. The second synchronous pulley 22, third synchronous pulley 23, fourth synchronous pulley 31, and seventh synchronous pulley 41 all serve as driven pulleys. Driven pulleys often act as tension adjustment points in transmission systems, bearing dynamic loads in multiple directions and prone to deviation. Therefore, providing corresponding retaining edges on the second synchronous pulley 22, third synchronous pulley 23, fourth synchronous pulley 31, and seventh synchronous pulley 41 as driven pulleys can play a corrective role and improve the operational stability of the corresponding synchronous belts.
[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of this utility model. Any modifications or equivalent substitutions that do not depart from the spirit and scope of this utility model should be covered within the protection scope of the claims of this utility model.
Claims
1. A multi-stage reduction drive mechanism in a wire drawing machine, comprising: The rack is characterized in that a first synchronous wheel is rotatably arranged on the first rotating shaft, a second synchronous wheel is fixedly connected to the first synchronous wheel, a third synchronous wheel is fixedly arranged on the first rotating shaft, a fourth synchronous wheel, a fifth synchronous wheel and a sixth synchronous wheel are sequentially fixedly arranged on the second rotating shaft, a seventh synchronous wheel is fixedly arranged on the third rotating shaft, a motor is arranged on the rack, an eighth synchronous wheel is fixedly arranged on an output shaft of the motor, the second synchronous wheel is connected to the eighth synchronous wheel through a first synchronous belt, the first synchronous wheel is connected to the fourth synchronous wheel through a second synchronous belt, the third synchronous wheel is connected to the sixth synchronous wheel through a third synchronous belt, the fifth synchronous wheel is connected to the seventh synchronous wheel through a fourth synchronous belt, the modulus of all the synchronous wheels are the same, the diameter of the first synchronous wheel is smaller than that of the fourth synchronous wheel, the diameter of the second synchronous wheel is larger than that of the eighth synchronous wheel, the diameter of the third synchronous wheel is larger than that of the sixth synchronous wheel, and the diameter of the fifth synchronous wheel is larger than that of the seventh synchronous wheel.
2. A multi-stage reduction gear mechanism in a wire drawing machine according to claim 1, characterized in that: The connecting structure between the first synchronous wheel and the second synchronous wheel is that a sleeve shaft is arranged on the first synchronous wheel, the second synchronous wheel is sleeved on the sleeve shaft and abuts against the teeth of the first synchronous wheel, a plurality of jointing screw holes are circumferentially arranged at the joint between the second synchronous wheel and the sleeve shaft, and jointing screws are screwed into the jointing screw holes.
3. A multi-stage reduction gear mechanism in a wire drawing machine according to claim 1, characterized in that: A first top sleeve is fixedly arranged on the first rotating shaft, one inner bearing is sleeved on each of the front and rear ends of the first synchronous wheel, the inner ring of the inner bearing located at the front side abuts against the first top sleeve, a shaft sleeve is sleeved on the first rotating shaft and abuts against the inner rings of the two inner bearings, the third synchronous wheel is sleeved on the first rotating shaft and connected through a flat key, the third synchronous wheel abuts against the inner ring of the inner bearing located at the rear side, and a group of first top nuts are screwed on the first rotating shaft.
4. A multi-stage reduction gear mechanism in an wire drawing machine as claimed in claim 1, wherein: A second top sleeve is fixedly arranged on the second rotating shaft, the fourth synchronous wheel is sleeved on the second rotating shaft and abuts against the second top sleeve, the fifth synchronous wheel is sleeved on the second rotating shaft and abuts against the fourth synchronous wheel, the sixth synchronous wheel is sleeved on the second rotating shaft and abuts against the fifth synchronous wheel, the fourth synchronous wheel, the fifth synchronous wheel and the sixth synchronous wheel are fixedly connected to the second rotating shaft through the same flat key, and a group of second top nuts are screwed on the second rotating shaft.
5. A multi-stage reduction gear mechanism in an wire drawing machine as claimed in claim 1, wherein: A third top sleeve is fixedly arranged on the third rotating shaft, the seventh synchronous wheel is sleeved on the third rotating shaft and abuts against the third top sleeve, the seventh synchronous wheel is connected to the third rotating shaft through a flat key, and a group of third top nuts are screwed on the third rotating shaft.
6. A multi-stage reduction drive mechanism in an wire drawing machine as claimed in claim 1, characterized in that: First stop edges are arranged on the two side walls of the second synchronous wheel, second stop edges are arranged on the two side walls of the third synchronous wheel, third stop edges are arranged on the two side walls of the fourth synchronous wheel, and fourth stop edges are arranged on the two side walls of the seventh synchronous wheel.