A wire drawing machine for producing ultra-fine steel wire

Abstract

This invention relates to the field of wire drawing equipment technology, specifically to a wire drawing machine for producing ultra-fine steel wire. The machine includes a body with a fixed shaft and a drive shaft. A drive roller is rotatably mounted on the drive shaft, and the drive roller includes multiple first winding rollers, with adjacent first winding rollers capable of relative rotation. A driven roller is rotatably mounted on the fixed shaft, and the driven roller includes multiple second winding rollers, with adjacent second winding rollers capable of relative rotation. Multiple wire drawing dies are also provided between the drive roller and the driven roller, each drawing die having a perforation that reduces the diameter of the steel wire. Each first winding roller is equipped with a friction component that frictionally contacts the drive shaft. By adjusting the friction force between each friction component and the drive shaft, the linear speed of the first winding roller can be adjusted, thereby matching the diameter reduction ratio of the steel wire by the perforation with the front-to-back stretch ratio of the steel wire, thus improving the wire drawing quality.

Description

Technical Field

[0001] This invention relates to the field of wire drawing equipment technology, and in particular to a wire drawing machine for producing ultra-fine steel wire. Background Technology

[0002] A wire drawing machine is a mechanical device used for metal processing. It is mainly used to process metal materials (such as steel, copper, aluminum, etc.) into wires or filaments of various specifications through a drawing process.

[0003] For example, patent application CN120347080A discloses a cooling device for a wire drawing machine with rust prevention and descaling functions. A first drawing drum and a second drawing drum are rotatably connected to the front side of the fixed plate. The first and second drawing drums rotate synchronously. By repeatedly winding the steel wire around the grooves of the first and second drawing drums, a drawing force is generated using the friction between the first and second drawing drums and the steel wire. The diameter of the steel wire gradually decreases as it passes through the inner hole of the drawing die, thus forming a "diameter reduction" channel. Since the diameter reduction ratios of each drawing die are different, if the diameter reduction ratio of the drawing die does not match the diameter ratio of the steel wire before and after stretching, the tension of the metal wire will be too high or too low, thus affecting the drawing quality. Summary of the Invention

[0004] Therefore, it is necessary to provide a wire drawing machine for producing ultra-fine steel wire, addressing the technical problem that current wire drawing devices affect wire drawing quality.

[0005] The above objectives are achieved through the following technical solutions:

[0006] A wire drawing machine for producing ultra-fine steel wire includes a machine body with a vertical surface. A fixed shaft and a drive shaft extending horizontally are vertically arranged on the vertical surface. A drive pulley is rotatably mounted on the drive shaft. The drive pulley includes multiple first winding wheels sequentially distributed along the axial direction of the drive shaft. The diameters of the multiple first winding wheels gradually increase in the direction away from the vertical surface of the machine body, and adjacent first winding wheels can rotate relative to each other. A driven pulley is rotatably mounted on the fixed shaft. The driven pulley includes multiple second winding wheels sequentially distributed along the axial direction of the fixed shaft. The second winding wheels and the first winding wheels are perpendicular to the fixed shaft. The first and second winding wheels are aligned one-to-one with the same diameter, and adjacent second winding wheels can rotate relative to each other. Multiple wire drawing dies are also provided between the driving and driven winding wheels. Each drawing die is located between the corresponding first and second winding wheels, and each drawing die has a through hole that can reduce the diameter of the steel wire. Each first winding wheel is equipped with a friction component that rubs against the driving shaft. By adjusting the friction force between each friction component and the driving shaft, the linear speed of each first winding wheel can be adjusted, thereby matching the reduction ratio of the steel wire by the through hole with the front-to-back stretching ratio of the steel wire.

[0007] Furthermore, the friction assembly includes a rotating disk, the axis of which extends radially along the first winding wheel. A sliding rod is slidably mounted coaxially at the center of the rotating disk, and a friction block is mounted at the end of the sliding rod. The friction block is used for frictional contact with the drive shaft. A compression spring is provided between the friction block and the rotating disk. A first nut is threaded onto the sliding rod. By rotating the first nut, the sliding rod slides along its own length, which can change the initial distance between the friction block and the rotating disk and the degree of compression of the compression spring, thereby changing the frictional force between the friction block and the drive shaft. The initial distance between the friction block and the rotating disk is different for each friction assembly.

[0008] Furthermore, the first winding wheel is provided with a threaded hole extending radially therein, the rotating disk is threadedly connected to the threaded hole, and the friction block has an arc-shaped surface that is in frictional contact with the drive shaft.

[0009] Furthermore, the slide bar is also equipped with an automatic compensation mechanism, which enables the arc-shaped surface of the friction block to always remain in contact with the outer peripheral surface of the drive shaft.

[0010] Furthermore, the automatic compensation mechanism includes a chuck, a transmission drum, and a locking pin. The chuck is coaxially fixed on the slide rod and located on the side of the rotating disk away from the friction block. The transmission drum is fixedly connected to both the chuck and the rotating disk. The locking pin is fixedly mounted on the rotating disk and extends along the axial direction of the rotating disk. The chuck has a locking groove, and the locking pin has two telescopic keys distributed along its length. The locking groove can engage with the two telescopic keys respectively.

[0011] Furthermore, an annular partition plate is provided between two adjacent first winding wheels. The annular partition plate is anti-rotationally mounted on the drive shaft. The annular partition plate is provided with transmission teeth distributed along its circumference. When the slot engages with the telescopic key near the rotating disk, the transmission drum can mesh with the transmission teeth and thus rotate, thereby driving the rotating disk to move in the threaded hole toward the direction of the drive shaft.

[0012] Furthermore, the telescopic key includes a sleeve, two snap-fit ​​balls, and a connecting spring. The sleeve is arranged radially through the snap-fit ​​post, the connecting spring is coaxially located inside the sleeve, the two snap-fit ​​balls are located at the two ends of the connecting spring, and the snap-fit ​​groove is a spherical annular groove, allowing the snap-fit ​​balls to enter or disengage from the spherical annular groove.

[0013] Furthermore, the first nut is located on the side of the chuck away from the rotating disk, and a first spring is provided between the first nut and the chuck, which can drive the chuck to move; a second nut is also threadedly connected to the slide rod, the second nut is located between the chuck and the rotating disk, and a second spring is provided between the second nut and the chuck, which can cause the chuck to reset.

[0014] Furthermore, both the first and second winding wheels are equipped with anti-rotation devices with winding hubs on their exteriors, and the winding hubs are in sliding contact with the steel wire.

[0015] Furthermore, the machine body is also equipped with a drive motor and a reducer, and the drive motor is driven in conjunction with the drive shaft through the reducer.

[0016] The beneficial effects of this invention are:

[0017] The wire drawing machine for producing ultra-fine steel wire provided by the present invention firstly adjusts the linear speed of each first winding wheel by adjusting the friction force between each friction component and the drive shaft, thereby matching the reduction ratio of the wire diameter to the piercing with the front and rear stretching ratio of the wire, making the tension of the wire moderate, and thus improving the wire drawing quality.

[0018] Secondly, an automatic compensation mechanism is provided. This mechanism can prevent the friction between the friction block and the drive shaft from decreasing when the friction block wears, thus affecting the linear speed of the first winding wheel. Attached Figure Description

[0019] Figure 1 A three-dimensional structural schematic diagram of a wire drawing machine for producing ultra-fine steel wire provided in an embodiment of the present invention;

[0020] Figure 2 This is a side view schematic diagram of a wire drawing machine for producing ultra-fine steel wire according to an embodiment of the present invention;

[0021] Figure 3 for Figure 2 Sectional view of AA;

[0022] Figure 4 This is a schematic diagram of the structure of the first winding wheel in a wire drawing machine for producing ultra-fine steel wire according to an embodiment of the present invention;

[0023] Figure 5 This is an exploded schematic diagram of the first winding wheel in a wire drawing machine for producing ultra-fine steel wire according to an embodiment of the present invention;

[0024] Figure 6 This is an exploded schematic diagram of the friction component in a wire drawing machine for producing ultra-fine steel wire according to an embodiment of the present invention;

[0025] Figure 7 This is a cross-sectional schematic diagram of the friction component in a wire drawing machine for producing ultra-fine steel wire according to an embodiment of the present invention;

[0026] Figure 8 for Figure 7 Enlarged view of the structure at point B in the middle;

[0027] Figure 9This is a schematic diagram of the structure of the annular partition plate in a wire drawing machine for producing ultra-fine steel wire according to an embodiment of the present invention.

[0028] in:

[0029] 101. Machine body; 102. Die support; 103. Wire drawing die; 200. Reducer; 300. Drive motor; 400. Driven pulley; 500. Steel wire; 600. Driven pulley; 601. Drive shaft; 6011. Guide keyway; 602. Annular partition plate; 6021. Transmission gear; 603. Spline; 700. First winding wheel; 701. Through hole; 702. Threaded hole; 703. Bayonet; 704. Winding hub; 7041. Clamping block; 800. Friction assembly; 801. Friction block; 8011, arc-shaped surface; 802, fixing pin; 803, slide rod; 8031, first external thread; 804, rotating disk; 8041, second external thread; 8042, compression spring; 8043, center hole; 8044, locking pin; 80441, connecting spring; 80442, locking ball; 80443, sleeve; 805, transmission drum; 806, chuck; 8061, locking groove; 807, first nut; 808, first spring; 809, second nut; 810, second spring. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0031] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They 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, and therefore should not be construed as limiting the invention.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0033] like Figures 1 to 9 As shown, an embodiment of the present invention provides a wire drawing machine for producing ultra-fine steel wire, comprising a machine body 101, the machine body 101 having a vertical surface, on which a fixed shaft and a drive shaft 601 extending horizontally are vertically arranged. A drive pulley 600 is rotatably mounted on the drive shaft 601, the drive pulley 600 including a plurality of first winding wheels 700 sequentially distributed along the axial direction of the drive shaft 601, the diameter of the plurality of first winding wheels 700 gradually increasing in the direction away from the vertical surface of the machine body 101, and adjacent two first winding wheels 700 being able to rotate relative to each other; a driven pulley 400 is rotatably mounted on the fixed shaft, the driven pulley 400 including a plurality of second winding wheels sequentially distributed along the axial direction of the fixed shaft, the second winding wheels and the first winding wheels 700 being perpendicular to the vertical surface of the machine body 101. The fixed shafts are aligned one-to-one and have the same diameter, allowing adjacent second winding wheels to rotate relative to each other. Multiple wire drawing dies 103 are provided between the active winding wheel 600 and the driven winding wheel 400. Each wire drawing die 103 is located between the corresponding first winding wheel 700 and second winding wheel. Each wire drawing die 103 has a through hole, which can reduce the diameter of the steel wire 500. Each first winding wheel 700 is equipped with a friction component 800, which rubs against the active shaft 601. By adjusting the friction force between each friction component 800 and the active shaft 601, the linear velocity of each first winding wheel 700 can be adjusted, thereby matching the reduction ratio of the through hole to the front and rear stretch ratio of the steel wire 500.

[0034] The machine body 101 is equipped with a mold support 102, and the wire drawing dies 103 are staggered in the mold support 102. In use, the steel wire 500 is wound around the second winding wheel with the smallest diameter once, then passes through the hole in the wire drawing die 103 and wound around the first winding wheel with the smallest diameter once. It then returns from the bottom of the driving pulley 600 to the adjacent second winding wheel of the driven pulley 400, and re-enters the adjacent wire drawing die 103 and the first winding wheel 700. This process is repeated to wind the steel wire 500. The steel wire 500 can be replaced with other metal wires, such as copper wire or gold wire.

[0035] No friction assembly 800 is provided between the second winding wheel and the fixed shaft, so that when each of the first winding wheels 700 on the active tower wheel 600 rotates, the corresponding second winding wheel can be pulled synchronously by the steel wire 500.

[0036] The wire drawing die 103 has an inlet, a conical compression section and an outlet. The inlet is slightly larger than the initial diameter of the steel wire 500 to facilitate the smooth entry of the steel wire 500 and reduce initial friction. The diameter of the conical compression section gradually decreases, causing the steel wire 500 to undergo plastic deformation. The outlet is the target diameter of the steel wire 500 to ensure dimensional accuracy and surface finish.

[0037] During the wire drawing process, if the linear speed of the first winding wheel 700 is low, the tensile force exerted by the first winding wheel 700 on the steel wire 500 is small. The steel wire 500 is not fully stretched, causing it to accumulate between the exit of the wire drawing die 103 and the first winding wheel 700. This results in slack in the steel wire 500, leading to insufficient tension. Conversely, if the linear speed of the first winding wheel 700 is high, the tensile force exerted by the first winding wheel 700 on the steel wire 500 is large. This causes the steel wire 500 to be overstretched, exceeding the diameter reduction capacity of the wire drawing die 103. Consequently, the diameter of the steel wire 500 becomes too small, resulting in excessive tension and a high risk of wire breakage.

[0038] The wire drawing machine for producing ultra-fine steel wire of the present invention can adjust the linear speed of the first winding wheel 700 by adjusting the friction force between each friction component 800 and the drive shaft 601, thereby matching the reduction ratio of the piercing to the steel wire 500 with the front and rear stretching ratio of the steel wire 500, so that the tension of the steel wire 500 is moderate, thereby improving the wire drawing quality.

[0039] like Figure 6 As shown, the friction assembly 800 includes a rotating disk 804, the axis of which extends radially along the first winding wheel 700. A central hole 8043 is provided at the center of the rotating disk 804, and a sliding rod 803 is slidably mounted coaxially within the central hole 8043. A friction block 801 is provided at the end of the sliding rod 803, and the friction block 801 is used for frictional contact with the drive shaft 601. A compression spring 8042 is provided between the friction block 801 and the rotating disk 804. A first nut 807 is threaded onto the sliding rod 803. By rotating the first nut 807, the sliding rod 803 slides along its own length, changing the initial distance between the friction block 801 and the rotating disk 804 and the degree of compression of the compression spring 8042. This changes the elastic pushing force of the compression spring 8042 on the friction block 801. Since the elastic pushing force is positively correlated with the frictional force, this changes the frictional force between the friction block 801 and the drive shaft 601.

[0040] The initial distance between the friction block 801 of each friction component 800 and the rotating disk 804 is different, which makes the friction force between the friction block 801 of each friction component 800 and the drive shaft 601 different, and thus the linear velocity of each first winding wheel 700 is different.

[0041] Specifically, the slide rod 803 and the friction block 801 are fixedly connected by a fixing pin 802. The slide rod 803 is provided with a first external thread 8031, which is used for threaded connection with the first nut 807.

[0042] Furthermore, the first winding wheel 700 is provided with a threaded hole 702 extending radially therein, and the rotating disk 804 is threadedly connected to the threaded hole 702. The friction block 801 has an arc-shaped surface 8011, which is in frictional contact with the drive shaft 601. A second external thread 8041 is provided on the outer circumferential surface of the rotating disk 804, and the second external thread 8041 is used for threaded connection with the threaded hole 702.

[0043] Furthermore, the slide bar 803 is also equipped with an automatic compensation mechanism, which ensures that the arc-shaped surface 8011 of the friction block 801 remains in contact with the outer peripheral surface of the drive shaft 601. This automatic compensation mechanism prevents the friction between the friction block 801 and the drive shaft 601 from decreasing due to wear, thus avoiding any impact on the linear velocity of the first winding wheel 700.

[0044] Furthermore, the automatic compensation mechanism includes a chuck 806, a transmission drum 805, and a locking pin 8044. The chuck 806 is coaxially fixed on the slide rod 803 and located on the side of the rotating disk 804 away from the friction block 801. The transmission drum 805 is fixedly connected to both the chuck 806 and the rotating disk 804. The locking pin 8044 is fixedly mounted on the rotating disk 804 and extends along the axial direction of the rotating disk 804. The chuck 806 is provided with a locking groove 8061, and the locking pin 8044 is provided with two telescopic keys distributed along its length. The locking groove 8061 can engage with the two telescopic keys respectively.

[0045] The transmission drum 805 is lantern-shaped and consists of multiple elastic strips spaced circumferentially around the slide rod 803. Two locking posts 8044 are provided, and the chuck 806 has two locking slots 8061, each corresponding to a locking post 8044.

[0046] like Figure 3 and Figure 9As shown, an annular partition plate 602 is provided between two adjacent first winding wheels 700. The annular partition plate 602 is anti-rotationally mounted on the drive shaft 601. The annular partition plate 602 is provided with transmission teeth 6021 distributed circumferentially on it. When the slot 8061 engages with the telescopic key near the rotating disk 804, the transmission drum 805 can mesh with the transmission teeth 6021 and thus rotate, thereby driving the rotating disk 804 to move in the threaded hole 702 toward the drive shaft 601.

[0047] When the slot 8061 engages with the telescopic key away from the rotating disk 804, the protrusion of the transmission drum 805 is small, so the transmission drum 805 will not contact the transmission gear 6021. When the slot 8061 engages with the telescopic key near the rotating disk 804, the protrusion of the transmission drum 805 is large, so the elastic strip on the transmission drum 805 can contact and mesh with the transmission gear 6021. During the rotation of the first winding wheel 700, the transmission drum 805 rotates accordingly, and then the transmission drum 805 meshes with the transmission gear 6021 and rotates on its own. The rotation of the transmission drum 805 drives the chuck 806 and the rotating disk 804 to rotate as a whole, causing the rotating disk 804 to move in the threaded hole 702 towards the drive shaft 601, and thus the friction block 801 moves closer to the drive shaft 601, realizing automatic compensation for the wear of the friction block 801.

[0048] Specifically, the annular partition plate 602 is provided with a spline 603 inside, and the drive shaft 601 is provided with a guide keyway 6011. The spline 603 and the guide keyway 6011 are anti-rotation and slidingly engaged.

[0049] Furthermore, the telescopic key includes a sleeve 80443, two snap-fit ​​balls 80442, and a connecting spring 80441. The sleeve 80443 is arranged radially through the snap-fit ​​post 8044. The connecting spring 80441 is coaxially located inside the sleeve 80443. The two snap-fit ​​balls 80442 are located at opposite ends of the connecting spring 80441. The slot 8061 is a spherical annular groove, allowing the snap-fit ​​balls 80442 to enter or disengage from the spherical annular groove. This structure is simple and easy to install. Two sleeves 80443 can be used.

[0050] Furthermore, the first nut 807 is located on the side of the chuck 806 away from the rotating disk 804, and a first spring 808 is provided between the first nut 807 and the chuck 806, which can drive the chuck 806 to move; a second nut 809 is also threadedly connected to the slide rod 803, the second nut 809 is located between the chuck 806 and the rotating disk 804, and a second spring 810 is provided between the second nut 809 and the chuck 806, which can cause the chuck 806 to reset.

[0051] When the transmission drum 805 engages with the transmission gear 6021 on the annular partition plate 602, both the first spring 808 and the second spring 810 are compressed. When the second spring 810 is compressed to its limit position, the second spring 810 is released elastically, thereby promoting the reset of the chuck 806, and then the transmission drum 805 is reset, so that the transmission drum 805 disengages from the transmission gear 6021.

[0052] Furthermore, both the first winding wheel 700 and the second winding wheel are equipped with anti-rotation devices with winding hubs 704 on their exteriors, which are used to slide in contact with the steel wire 500.

[0053] Both ends of the winding hub 704 are provided with annular protrusions to prevent the steel wire 500 from slipping. A bushing is fixed between two adjacent annular partition plates 602. The first winding wheel 700 has a through hole 701 inside, and the first winding wheel 700 is rotatably mounted outside the bushing through the through hole 701. The bushing has an annular groove (not shown in the figure), and the friction block 801 passes through the annular groove and frictionally engages with the drive shaft 601. A retaining slot 703 is provided on the outer surface of the first winding wheel 700, and a retaining block 7041 is provided on the inner surface of the winding hub 704. The retaining block 7041 and the retaining slot 703 are in anti-rotation engagement.

[0054] Furthermore, the machine body 101 is also provided with a drive motor 300 and a reducer 200, and the drive motor 300 is connected to the drive shaft 601 through the reducer 200.

[0055] Based on the above embodiments, the usage principle and working process of the embodiments of the present invention are as follows:

[0056] First, the friction components 800 on each of the first winding wheels 700 are adjusted by tightening the first nut 807 to make the slide bar 803 slide along its own length, changing the initial distance between the friction block 801 and the rotating disk 804, thereby changing the degree of compression of the compression spring 8042. Then, the first winding wheel 700 with the friction components 800 is installed on the drive shaft 601. By rotating the rotating disk 804 of each friction component 800, the friction block 801 is kept in contact with the drive shaft 601. At this time, because the degree of compression of the compression spring 8042 in each friction component 800 is different, the pushing force of the compression spring 8042 on the friction block 801 is different, resulting in different frictional forces between the friction block 801 of each friction component 800 and the drive shaft 601.

[0057] Then, the steel wire 500 is threaded onto the first winding wheel 700, the drawing die 103, and the second winding wheel, and the drive motor 300 is started. The drive motor 300 drives the drive shaft 601 to rotate through the reducer 200. The drive shaft 601 drives the corresponding first winding wheel 700 to rotate through each friction component 800, so that the linear speed of the first winding wheel 700 is different. The steel wire 500 is gradually stretched and its diameter is reduced by the holes of the drawing die 103.

[0058] As the drive shaft 601 rotates, the friction block 801 gradually wears down. The compression spring 8042 pushes the friction block 801 towards the drive shaft 601, increasing the distance between the friction block 801 and the rotating disk 804. The friction block 801 pulls the slide rod 803, the first nut 807, and the second nut 809 to move synchronously, compressing the first spring 808. The first nut 807 gradually moves closer to the chuck 806. When the wear of the friction block 801 is large, the first nut 807 will push the chuck 806 to move, so that the chuck 806 gradually approaches the rotating disk 804. Thus, the chuck 806 disengages from the telescopic key on the chuck post 8044 away from the rotating disk 804 and engages with the telescopic key near the rotating disk 804. The protrusion of the transmission drum 805 increases, and the transmission drum 805 meshes with the transmission teeth 6021 on the annular partition plate 602 to achieve rotation. The transmission drum 805 drives the rotating disk 804 to move in the threaded hole 702 towards the direction of the drive shaft 601. This causes the rotating disk 804, chuck 806 and transmission drum 805 to move as a whole towards the direction of the drive shaft 601. As a result, the distance between the rotating disk 804 and the friction block 801 returns to the initial state, and the first spring 808 and the compression spring 8042 are both reset to their initial state. At this time, the second spring 810 is compressed. When the second spring 810 is compressed to its limit, the elastic force of the second spring 810 reaches its maximum, which can push the chuck 806 to reset, so that the slot 8061 on the chuck 806 engages with the telescopic key on the chuck 8044 away from the rotating disk 804. As a result, the protrusion of the transmission drum 805 is reduced, and the transmission drum 805 no longer meshes with the transmission gear 6021. As a result, the rotating disk 804 stops rotating and moves, thereby realizing automatic compensation for wear.

[0059] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0060] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A wire drawing machine for producing ultra-fine steel wire, characterized in that, The device includes a body with a vertical surface. A fixed shaft and a drive shaft extending horizontally are vertically arranged on the vertical surface. A drive pulley is rotatably mounted on the drive shaft. The drive pulley includes multiple first winding wheels arranged sequentially along the drive shaft's axial direction. The diameters of the multiple first winding wheels gradually increase in the direction away from the vertical surface of the body, and adjacent first winding wheels can rotate relative to each other. A driven pulley is rotatably mounted on the fixed shaft. The driven pulley includes multiple second winding wheels arranged sequentially along the fixed shaft's axial direction. The second winding wheels correspond one-to-one with the first winding wheels in the direction perpendicular to the fixed shaft and have the same diameter. Adjacent second winding wheels can rotate relative to each other. Multiple wire drawing dies are also provided between the drive pulley and the driven pulley. Each wire drawing die is located between a corresponding first winding wheel and second winding wheel. Each wire drawing die has a through hole, which allows for wire diameter reduction. Each of the first winding wheels is equipped with a friction assembly, which makes frictional contact with the drive shaft. By adjusting the magnitude of the frictional force between each friction assembly and the drive shaft, the linear velocity of each first winding wheel can be adjusted, thereby making the tension of the steel wire appropriate. The friction assembly includes a rotating disk, the axis of which extends radially along the first winding wheel. A sliding rod is slidably mounted coaxially at the center of the rotating disk, and a friction block is mounted at the end of the sliding rod. The friction block is used to make frictional contact with the drive shaft. A compression spring is provided between the friction block and the rotating disk. A first nut is threaded onto the sliding rod. By rotating the first nut, the sliding rod slides along its own length, which can change the initial distance between the friction block and the rotating disk and the degree of compression of the compression spring, thereby changing the frictional force between the friction block and the drive shaft. The initial distance between the friction block and the rotating disk of each friction assembly is different.

2. The wire drawing machine for producing ultra-fine steel wire according to claim 1, characterized in that, The first winding wheel is provided with a threaded hole extending radially therein, the rotating disk is threadedly connected to the threaded hole, and the friction block has an arc-shaped surface that is in frictional contact with the drive shaft.

3. The wire drawing machine for producing ultra-fine steel wire according to claim 2, characterized in that, The slide bar is also equipped with an automatic compensation mechanism, which enables the arc-shaped surface of the friction block to always keep in contact with the outer peripheral surface of the drive shaft.

4. The wire drawing machine for producing ultra-fine steel wire according to claim 3, characterized in that, The automatic compensation mechanism includes a chuck, a transmission drum, and a locking pin. The chuck is coaxially fixed on the slide rod and located on the side of the rotating disk away from the friction block. The transmission drum is fixedly connected to both the chuck and the rotating disk. The locking pin is fixedly mounted on the rotating disk and extends along the axial direction of the rotating disk. The chuck has a locking groove, and the locking pin has two telescopic keys distributed along its length. The locking groove can engage with the two telescopic keys respectively.

5. The wire drawing machine for producing ultra-fine steel wire according to claim 4, characterized in that, An annular partition plate is provided between two adjacent first winding wheels. The annular partition plate is anti-rotationally mounted on the drive shaft. The annular partition plate is provided with transmission teeth distributed circumferentially. When the slot engages with the telescopic key near the rotating disk, the transmission drum can mesh with the transmission teeth and thus rotate, thereby driving the rotating disk to move in the threaded hole toward the direction of the drive shaft.

6. The wire drawing machine for producing ultra-fine steel wire according to claim 5, characterized in that, The telescopic key includes a sleeve, two snap-fit ​​balls, and a connecting spring. The sleeve is arranged radially through the snap-fit ​​post. The connecting spring is coaxially located inside the sleeve. The two snap-fit ​​balls are located at the two ends of the connecting spring. The snap-fit ​​groove is a spherical annular groove, and the snap-fit ​​balls can enter or disengage from the spherical annular groove.

7. The wire drawing machine for producing ultra-fine steel wire according to claim 4, characterized in that, The first nut is located on the side of the chuck away from the rotating disk, and a first spring is provided between the first nut and the chuck, which can drive the chuck to move; a second nut is also threadedly connected to the slide rod, the second nut is located between the chuck and the rotating disk, and a second spring is provided between the second nut and the chuck, which can cause the chuck to return to its original position.

8. The wire drawing machine for producing ultra-fine steel wire according to claim 1, characterized in that, Both the first and second winding wheels are equipped with anti-rotation devices with winding hubs on their exteriors, and the winding hubs are in sliding contact with the steel wire.

9. The wire drawing machine for producing ultra-fine steel wire according to claim 1, characterized in that, The machine body is also equipped with a drive motor and a reducer, and the drive motor is connected to the drive shaft through the reducer.

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