Wire drawing machine for superfine steel wire production

Abstract

The invention relates to the technical field of wire drawing equipment, in particular to a wire drawing machine for superfine steel wire production, which comprises a machine body, a fixed shaft and a driving shaft are arranged on the machine body, a driving cone pulley is rotatably arranged on the driving shaft, the driving cone pulley comprises a plurality of first wire winding wheels, and every two adjacent first wire winding wheels can rotate relatively; a driven cone pulley is rotationally arranged on the fixed shaft, the driven cone pulley comprises a plurality of second wire winding wheels, and every two adjacent second wire winding wheels can rotate relatively; a plurality of wire drawing dies are further arranged between the driving cone pulley and the driven cone pulley, each wire drawing die is provided with a through hole, and the through holes can reduce the diameter of a steel wire; each first wire winding wheel is provided with a friction assembly, the friction assemblies make friction contact with the driving shaft, the linear speed of the first wire winding wheels can be adjusted by adjusting the friction force between the friction assemblies and the driving shaft, then the diameter reducing ratio of a hole to a steel wire is matched with the front-back stretching ratio of the steel wire, and therefore the wire drawing quality can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wire drawing equipment, in particular to a wire drawing machine for ultra-fine steel wire production. BACKGROUND

[0002] The wire drawing machine is a mechanical equipment for metal processing, mainly used for processing various specifications of wire or wire rod through the drawing process of metal materials such as steel, copper, aluminum, etc.

[0003] The patent application file with the publication number CN120347080A discloses a wire drawing machine cooling device with rust prevention and descaling function, the front side of the fixed plate is respectively rotationally connected with the first drawing drum and the second drawing drum, the first drawing drum and the second drawing drum rotate synchronously, the steel wire is wound on the wire groove of the second drawing drum and the first drawing drum for multiple times, the drawing force is generated by the friction between the first drawing drum, the second drawing drum and the steel wire, and the inner hole diameter of the wire drawing die gradually decreases, thereby forming a "reducing diameter" channel. Since the reducing diameter ratios of the wire drawing dies are all different, if the reducing diameter ratio of the wire drawing die does not match the diameter ratio of the steel wire before and after stretching during the wire drawing process, the tension of the metal wire will be too large or too small, thereby affecting the wire drawing quality. SUMMARY

[0004] Therefore, it is necessary to provide a wire drawing machine for ultra-fine steel wire production in view of the technical problem that the current wire drawing device affects the wire drawing quality.

[0005] The above-mentioned purpose is achieved by the following technical scheme: A wire drawing machine for ultra-fine steel wire production, comprising a machine body, the machine body has a vertical surface, a fixed shaft and a driving shaft are vertically arranged on the vertical surface and extend in the horizontal direction, a driving tower wheel is rotationally arranged on the driving shaft, the driving tower wheel comprises a plurality of first wire winding wheels which are sequentially arranged along the axial direction of the driving shaft, the diameters of the plurality of first wire winding wheels gradually increase in the direction away from the vertical surface of the machine body, and adjacent two first wire winding wheels can relatively rotate; a driven tower wheel is rotationally arranged on the fixed shaft, the driven tower wheel comprises a plurality of second wire winding wheels which are sequentially arranged along the axial direction of the fixed shaft, the second wire winding wheels correspond to the first wire winding wheels in the direction perpendicular to the fixed shaft and have consistent diameters, and adjacent two second wire winding wheels can relatively rotate; a plurality of wire drawing dies are arranged between the driving tower wheel and the driven tower wheel, each wire drawing die is located between the corresponding first wire winding wheel and the second wire winding wheel, and each wire drawing die has a hole which can reduce the diameter of the steel wire; a friction assembly is arranged on each first wire winding wheel, the friction assembly is in frictional contact with the driving shaft, the linear speed of each first wire winding wheel can be adjusted by adjusting the friction force between each friction assembly and the driving shaft, and then the reducing diameter ratio of the hole to the steel wire can be matched with the front and rear stretching ratio of the steel wire.

[0006] Further, the friction assembly comprises a rotating disc, an axis of the rotating disc extending along a radial direction of the first winding wheel, a sliding rod coaxially arranged at a center of the rotating disc, a friction block arranged at an end of the sliding rod, the friction block being used for friction contact with the driving shaft, a compression spring arranged between the friction block and the rotating disc, a first nut threadedly connected to the sliding rod, the first nut being used for sliding the sliding rod along a length direction of the sliding rod, the initial distance between the friction block and the rotating disc and the compression degree of the compression spring being changed, and the friction force between the friction block and the driving shaft being changed; and the initial distances between the friction blocks and the rotating discs of the friction assemblies are different.

[0007] Further, the first winding wheel is provided with a threaded hole extending along a radial direction of the first winding wheel, the rotating disc is threadedly connected to the threaded hole, and the friction block has an arc surface, the arc surface being used for friction contact with the driving shaft.

[0008] Further, the sliding rod is further provided with an automatic compensation mechanism, the automatic compensation mechanism being used for keeping the arc surface of the friction block and the outer circumferential surface of the driving shaft always in close contact.

[0009] Further, the automatic compensation mechanism comprises a chuck, a transmission drum and a clamping column, the chuck is coaxially fixedly arranged on the sliding rod and located at a side of the rotating disc away from the friction block, the transmission drum is fixedly connected with the chuck and the rotating disc, the clamping column is fixedly arranged on the rotating disc and extends along an axial direction of the rotating disc, the chuck is provided with a clamping groove, and the clamping column is provided with two expansion keys distributed along a length direction of the clamping column, the clamping groove is capable of being clamped with the two expansion keys respectively.

[0010] Further, an annular partition plate is arranged between the two adjacent first winding wheels, the annular partition plate is rotationally assembled on the driving shaft, the annular partition plate is provided with transmission teeth distributed along a circumferential direction of the annular partition plate, when the clamping groove is clamped with the expansion key close to the rotating disc, the transmission drum is capable of being meshed with the transmission teeth to rotate, and the rotating disc is driven to move in the threaded hole towards the driving shaft.

[0011] Further, the expansion key comprises a sleeve, two clamping balls and a connecting spring, the sleeve penetrates through the clamping column along a radial direction of the clamping column, the connecting spring is coaxially arranged inside the sleeve, the two clamping balls are respectively arranged at two ends of the connecting spring, the clamping groove is a spherical ring groove, and the clamping balls are capable of entering or separating from the spherical ring groove.

[0012] Further, the first nut is located at a side of the chuck away from the rotating disc, a first spring is arranged between the first nut and the chuck, and the first spring is capable of driving the chuck to move; the sliding rod is further threadedly connected with a second nut, the second nut is located between the chuck and the rotating disc, a second spring is arranged between the second nut and the chuck, and the second spring is capable of driving the chuck to reset.

[0013] Furthermore, the exteriors of the first winding wheel and the second winding wheel are both anti-rotationally mounted with winding hubs, and the winding hubs are in sliding contact with the steel wire.

[0014] Furthermore, a driving motor and a reducer are provided on the machine body, and the driving motor is coupled with the driving shaft through the reducer.

[0015] The beneficial effects of the present invention are: The wire drawing machine for producing ultra-fine steel wire provided by the present invention can, firstly, adjust the linear speed of each first winding wheel by adjusting the friction force between each friction component and the driving shaft, thereby matching the diameter reduction ratio of the steel wire by perforation with the front-to-back stretching ratio of the steel wire, making the tension of the steel wire moderate, thereby improving the wire drawing quality of the steel wire.

[0016] Second, an automatic compensation mechanism is provided, which can prevent the friction between the friction block and the driving shaft from decreasing when the friction block is worn, thereby affecting the linear speed of the first winding wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the three-dimensional structure of a wire drawing machine for producing ultra-fine steel wire provided in one embodiment of the present invention; Figure 2 A schematic side view of a wire drawing machine for producing ultra-fine steel wire according to an embodiment of the present invention; Figure 3 for Figure 2 Middle AA section view; Figure 4 A schematic structural diagram of a first winding wheel in a wire drawing machine for producing ultra-fine steel wire according to an embodiment of the present invention; Figure 5 An exploded schematic diagram of a first winding wheel in a wire drawing machine for producing ultra-fine steel wire according to an embodiment of the present invention; Figure 6 An exploded schematic diagram of a friction assembly in a wire drawing machine for producing ultra-fine steel wire according to an embodiment of the present invention; Figure 7 A schematic cross-sectional view of a friction assembly in a wire drawing machine for producing ultra-fine steel wire according to an embodiment of the present invention; Figure 8 for Figure 7 A magnified view of the structure at point B in the middle; Figure 9 This is a schematic structural diagram of an annular partition plate in a wire drawing machine for producing ultrafine steel wire provided by one embodiment of the present invention.

[0018] in: 101, body; 102, mold support; 103, drawing die; 200, speed reducer; 300, driving motor; 400, driven cone pulley; 500, steel wire; 600, driving cone pulley; 601, driving shaft; 6011, guide key groove; 602, annular partition plate; 6021, transmission tooth; 603, spline; 700, first wire winding wheel; 701, through hole; 702, threaded hole; 703, bayonet; 704, wire winding hub; 7041, clamping block; 800, friction assembly; 801, friction block; 8011, arc surface; 802, fixing pin; 803, sliding rod; 8031, first external thread; 804, rotating disc; 8041, second external thread; 8042, compression spring; 8043, center hole; 8044, clamping column; 80441, connecting spring; 80442, clamping ball; 80443, sleeve; 805, transmission drum; 806, chuck; 8061, clamping groove; 807, first nut; 808, first spring; 809, second nut; 810, second spring. DETAILED DESCRIPTION

[0019] In order to make the objects, technical solutions and advantages of the present application clearer, the following further describes the present application with reference to the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application.

[0020] The serial numbers of components in the present application, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any sequence or technical meaning. Unless otherwise specified, the "connection" and "coupling" in the present application include direct and indirect connection (coupling). In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0021] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0022] As Figures 1 to 9 shown in the drawings, an embodiment of the application provides a wire drawing machine for superfine steel wire production, which comprises a machine body 101, the machine body 101 has a vertical surface, a fixed shaft and a driving shaft 601 extending in the horizontal direction are vertically arranged on the vertical surface, a driving tower wheel 600 is rotationally arranged on the driving shaft 601, the driving tower wheel 600 comprises a plurality of first wire winding wheels 700 which are sequentially arranged along the axial direction of the driving shaft 601, the diameters of the plurality of first wire winding wheels 700 gradually increase in the direction away from the vertical surface of the machine body 101, and the adjacent two first wire winding wheels 700 can relatively rotate; a driven tower wheel 400 is rotationally arranged on the fixed shaft, the driven tower wheel 400 comprises a plurality of second wire winding wheels which are sequentially arranged along the axial direction of the fixed shaft, the second wire winding wheels correspond to the first wire winding wheels 700 one by one in the direction perpendicular to the fixed shaft and have consistent diameters, and the adjacent two second wire winding wheels can relatively rotate; a plurality of wire drawing dies 103 are further arranged between the driving tower wheel 600 and the driven tower wheel 400, each wire drawing die 103 is located between the corresponding first wire winding wheel 700 and the second wire winding wheel, and each wire drawing die 103 has a hole, the hole can reduce the diameter of the steel wire 500; a friction assembly 800 is arranged on each first wire winding wheel 700, the friction assembly 800 is in frictional contact with the driving shaft 601, by adjusting the friction force between each friction assembly 800 and the driving shaft 601, the linear speed of each first wire winding wheel 700 can be adjusted, and then the reduction ratio of the hole to the steel wire 500 is matched with the front and rear stretching ratio of the steel wire 500.

[0023] The machine body 101 is provided with a die support 102, and the wire drawing dies 103 are arranged in the die support 102 in a staggered manner. In use, the steel wire 500 winds around the second wire winding wheel with the smallest diameter for one turn, then passes through the hole of the wire drawing die 103 and winds around the first wire winding wheel 700 with the smallest diameter for one turn, then returns to the adjacent second wire winding wheel of the driven tower wheel 400 from the bottom of the driving tower wheel 600, and then enters the adjacent wire drawing die 103 and first wire winding wheel 700 again, so as to realize the winding of the steel wire 500. The steel wire 500 can be replaced by other metal wires such as copper wire and gold wire.

[0024] The friction assembly 800 is not arranged between the second wire winding wheel and the fixed shaft, so that when each first wire winding wheel 700 on the driving tower wheel 600 rotates, the corresponding second wire winding wheel can be synchronously rotated by the steel wire 500.

[0025] The hole of the wire drawing die 103 has an inlet, a tapered compression section and an outlet, the inlet is slightly larger than the initial diameter of the steel wire 500, so as to facilitate the smooth entry of the steel wire 500 and reduce the initial friction; the diameter of the tapered compression section gradually decreases, so that the steel wire 500 is plastically deformed; and the outlet is the diameter of the target steel wire 500, so as to ensure the size accuracy and surface finish.

[0026] In the drawing process, if the linear speed of the first winding wheel 700 is small, the drawing force of the first winding wheel 700 on the steel wire 500 is small, the steel wire 500 is not stretched enough, and the steel wire 500 is accumulated between the drawing die 103 outlet and the first winding wheel 700, so that the steel wire 500 is relaxed to cause the tension to be too small. If the linear speed of the first winding wheel 700 is large, the drawing force of the first winding wheel 700 on the steel wire 500 is large, the steel wire 500 is excessively stretched beyond the reducing ability of the drawing die 103, so that the diameter of the steel wire 500 is too small to cause the tension to be too large, and the steel wire is easily broken.

[0027] The drawing machine for producing ultra-fine steel wire can adjust the linear speed of the first winding wheel 700 by adjusting the friction between each friction assembly 800 and the driving shaft 601, so as to match the reducing ratio of the piercing to the front and rear stretching ratio of the steel wire 500, and make the tension of the steel wire 500 moderate, thereby improving the drawing quality.

[0028] As shown in Figure 6 The friction assembly 800 includes a rotating disc 804, the axis of the rotating disc 804 extends along the radial direction of the first winding wheel 700, the center of the rotating disc 804 is provided with a center hole 8043, a sliding rod 803 is coaxially arranged in the center hole 8043, the end of the sliding rod 803 is provided with a friction block 801, the friction block 801 is used for friction contact with the driving shaft 601, a compression spring 8042 is arranged between the friction block 801 and the rotating disc 804, a first nut 807 is threadedly connected to the sliding rod 803, the sliding rod 803 is slid along the length direction of itself by rotating the first nut 807, the initial distance between the friction block 801 and the rotating disc 804 and the compression degree of the compression spring 8042 can be changed, so that the elastic thrust of the compression spring 8042 on the friction block 801 changes, since the elastic thrust and the friction force are positively correlated, the friction force between the friction block 801 and the driving shaft 601 is changed.

[0029] The initial distance between the friction block 801 and the rotating disc 804 of each friction assembly 800 is different, so that the friction force between the friction block 801 and the driving shaft 601 of each friction assembly 800 is different, and the linear speed of each first winding wheel 700 is different.

[0030] Specifically, the sliding rod 803 and the friction block 801 are fixedly connected through a fixed pin 802. The sliding rod 803 is provided with a first external thread 8031, and the first external thread 8031 is used for threadedly connecting with the first nut 807.

[0031] Further, the first winding wheel 700 is provided with a threaded hole 702 extending along the radial direction thereof, the rotating disc 804 is threadedly connected to the threaded hole 702, and the friction block 801 has an arc surface 8011 in frictional contact with the outer circumferential surface of the driving shaft 601. The outer circumferential surface of the first winding wheel 700 is provided with a second external thread 8041 for threadedly connecting with the threaded hole 702.

[0032] Further, the slide rod 803 is further provided with an automatic compensation mechanism, which can keep the arc surface 8011 of the friction block 801 in constant contact with the outer circumferential surface of the driving shaft 601. Thus, the automatic compensation mechanism can avoid the friction force between the friction block 801 and the driving shaft 601 becoming smaller due to the wear of the friction block 801, thereby affecting the linear speed of the first winding wheel 700.

[0033] Further, the automatic compensation mechanism comprises a chuck 806, a transmission drum 805 and a clamping column 8044. The chuck 806 is coaxially fixed on the slide rod 803 and located on the side of the rotating disc 804 away from the friction block 801. The transmission drum 805 is fixedly connected with the chuck 806 and the rotating disc 804. The clamping column 8044 is fixedly arranged on the rotating disc 804 and extends along the axial direction of the rotating disc 804. The chuck 806 is provided with a clamping groove 8061, and the clamping column 8044 is provided with two expansion keys distributed along the length direction thereof. The clamping groove 8061 can be respectively clamped with the two expansion keys.

[0034] The transmission drum 805 is in the shape of a lantern and is composed of a plurality of elastic strips distributed circumferentially and spaced apart around the slide rod 803. The chuck 806 is provided with two clamping grooves 8061 corresponding to the two clamping columns 8044.

[0035] As shown in Figure 3 and Figure 9 An annular partition plate 602 is arranged between two adjacent first winding wheels 700. The annular partition plate 602 is rotationally assembled on the driving shaft 601 and is provided with transmission teeth 6021 distributed along the circumferential direction thereof. When the clamping groove 8061 is clamped with the expansion key close to the rotating disc 804, the transmission drum 805 can be engaged with the transmission teeth 6021 to rotate, thereby driving the rotating disc 804 to move in the threaded hole 702 towards the driving shaft 601.

[0036] When the clamping groove 8061 is clamped with the telescopic key away from the rotating disc 804, the convex degree of the transmission drum 805 is small, so that the transmission drum 805 will not be in contact with the transmission teeth 6021. When the clamping groove 8061 is clamped with the telescopic key close to the rotating disc 804, the convex degree of the transmission drum 805 is large, so that the elastic strips on the transmission drum 805 can be in contact with and engaged with the transmission teeth 6021. During the rotation of the first winding drum 700, the transmission drum 805 rotates, and then the transmission drum 805 is rotated and engaged with the transmission teeth 6021, the rotation of the transmission drum 805 drives the clamping disc 806 and the rotating disc 804 to rotate as a whole, so that the rotating disc 804 moves in the threaded hole 702 towards the driving shaft 601, and then the friction block 801 is close to the driving shaft 601, so as to realize the automatic compensation of the wear of the friction block 801.

[0037] Specifically, the inside of the annular partition plate 602 is provided with a spline 603, and the driving shaft 601 is provided with a guide key groove 6011, and the spline 603 is rotationally stopped and slidably matched with the guide key groove 6011.

[0038] Further, the telescopic key comprises a sleeve 80443, two clamping balls 80442 and a connecting spring 80441, the sleeve 80443 is arranged through the clamping column 8044 along the radial direction of the clamping column 8044, the connecting spring 80441 is coaxially arranged in the inside of the sleeve 80443, and the two clamping balls 80442 are respectively arranged at the two ends of the connecting spring 80441. The clamping groove 8061 is a spherical ring groove, and the clamping ball 80442 can enter or separate from the spherical ring groove. This structure is simple and convenient to install. The sleeve 80443 can be provided with two sleeves.

[0039] Further, the first nut 807 is located on the side of the clamping disc 806 away from the rotating disc 804, and a first spring 808 is arranged between the first nut 807 and the clamping disc 806, and the first spring 808 can drive the clamping disc 806 to move; the second nut 809 is threadedly connected to the slide rod 803, and the second nut 809 is located between the clamping disc 806 and the rotating disc 804, and a second spring 810 is arranged between the second nut 809 and the clamping disc 806, and the second spring 810 can drive the clamping disc 806 to reset.

[0040] When the transmission drum 805 is engaged with the transmission teeth 6021 on the annular partition plate 602, the first spring 808 and the second spring 810 are compressed, and when the second spring 810 is compressed to the limit position, the second spring 810 is elastically released, thereby driving the clamping disc 806 to reset, and then the transmission drum 805 is reset, so that the transmission drum 805 is disengaged from the transmission teeth 6021.

[0041] Further, the first wire winding wheel 700 and the second wire winding wheel are both rotationally stopped and equipped with a wire winding hub 704 for sliding contact with the steel wire 500.

[0042] The wire winding hub 704 is provided with annular protrusions at both axial ends to prevent the steel wire 500 from sliding off. The shaft sleeve is fixed between the adjacent two annular partition plates 602, the first wire winding wheel 700 is rotationally arranged outside the shaft sleeve through the through hole 701, the shaft sleeve is provided with an annular sliding groove (not shown in the figure), and the friction block 801 is in frictional cooperation with the driving shaft 601 through the annular sliding groove. The first wire winding wheel 700 is provided with a bayonet 703 on the outer surface, and the inner surface of the wire winding hub 704 is provided with a clamping block 7041, which is in rotational stop cooperation with the bayonet 703.

[0043] Further, the body 101 is further provided with a driving motor 300 and a speed reducer 200, and the driving motor 300 is in transmission cooperation with the driving shaft 601 through the speed reducer 200.

[0044] In combination with the above embodiment, the use principle and working process of the embodiment of the application are as follows: First, adjust the friction assembly 800 on each first wire winding wheel 700, screw the first nut 807 to make the sliding rod 803 slide along the length direction of the sliding rod 803, change the initial distance between the friction block 801 and the rotating disc 804, and thus change the compression degree of the compression spring 8042. Then, install the first wire winding wheel 700 with the friction assembly 800 to the driving shaft 601, rotate the rotating disc 804 of each friction assembly 800 to make the friction block 801 adhere to the driving shaft 601, at this time, because the compression degrees of the compression springs 8042 in each friction assembly 800 are different, the pushing forces of the compression springs 8042 on the friction blocks 801 are different, and the friction forces between the friction blocks 801 and the driving shaft 601 of each friction assembly 800 are different.

[0045] Then, the steel wire 500 is arranged on the first wire winding wheel 700, the wire drawing die 103 and the second wire winding wheel, and the driving motor 300 is started, the driving motor 300 drives the driving shaft 601 to rotate through the speed reducer 200, the driving shaft 601 drives the corresponding first wire winding wheel 700 to rotate through each friction assembly 800, the linear speeds of the first wire winding wheels 700 are different, and the steel wire 500 is gradually stretched and reduced in diameter by the perforation of the wire drawing die 103.

[0046] With the rotation of the driving shaft 601, the friction block 801 gradually wears, the compression spring 8042 pushes the friction block 801 to move towards the driving shaft 601, the distance between the friction block 801 and the rotating disc 804 increases, and the friction block 801 pulls the slide rod 803, the first nut 807 and the second nut 809 to move synchronously, so that the first spring 808 is compressed, and the first nut 807 gradually approaches the chuck 806. When the wear of the friction block 801 is large, the first nut 807 pushes the chuck 806 to move, so that the chuck 806 gradually approaches the rotating disc 804, so that the chuck 806 is disengaged from the telescopic keys on the card column 8044 away from the rotating disc 804, and is engaged with the telescopic keys close to the rotating disc 804, the protrusion degree of the transmission drum 805 increases, the transmission drum 805 is engaged with the transmission teeth 6021 on the annular partition plate 602 to rotate, the transmission drum 805 drives the rotating disc 804 to move in the threaded hole 702 towards the driving shaft 601, so that the rotating disc 804, the chuck 806 and the transmission drum 805 move towards the driving shaft 601 as a whole, and then the distance between the rotating disc 804 and the friction block 801 returns to the initial state, and the first spring 808 and the compression spring 8042 are reset to the initial state. At this time, the second spring 810 is compressed, and when the second spring 810 is compressed to the limit value, the elastic force of the second spring 810 reaches the maximum, so as to push the chuck 806 to reset, so that the clamping groove 8061 on the chuck 806 is engaged with the telescopic keys on the card column 8044 away from the rotating disc 804, and then the protrusion degree of the transmission drum 805 decreases, the transmission drum 805 is no longer engaged with the transmission teeth 6021, and then the rotating disc 804 stops rotating and moving, so as to realize automatic compensation of the wear.

[0047] Any combination of the technical features in the above embodiments can be combined. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, but as long as the combination of the technical features does not exist, it should be considered as the scope of the description.

[0048] The above embodiments only express several embodiments of the application, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the application, a number of modifications and improvements can be made, which belong to the protection scope of the application. Therefore, the protection scope of the application should be subject to the appended claims.

Claims

1. A wire drawing machine for producing ultra-fine steel wire, characterized in that: The driving mechanism is a vertical cam which is located adjacent to the driving mechanism, and the driving mechanism has a plurality of first and second gears which are arranged on the cam and a plurality of second gears which are arranged on the cam. Each first winding wheel is provided with a friction assembly, which is in friction contact with the driving shaft. By adjusting the friction force between each friction assembly and the driving shaft, the linear speed of each first winding wheel can be adjusted, thereby matching the diameter reduction ratio of the perforation to the steel wire with the front-to-back stretching ratio of the steel wire.

2. The wire drawing machine for producing ultra-fine steel wire according to claim 1, characterized in that: The friction assembly includes a rotating disk, the axis of the rotating disk extends radially along the first winding wheel, a sliding rod is provided for coaxial sliding at the center of the rotating disk, a friction block is provided at the end of the sliding rod, and the friction block is used for friction contact with the driving shaft; a compression spring is provided between the friction block and the rotating disk, and a first nut is threadedly connected to the sliding rod. By rotating the first nut to make the sliding rod slide along its own length, the initial distance between the friction block and the rotating disk and the compression degree of the compression spring can be changed, thereby changing the friction force between the friction block and the driving shaft; the initial distance between the friction block and the rotating disk of each friction assembly is different.

3. The wire drawing machine for producing ultra-fine steel wire according to claim 2, characterized in that: The first winding wheel is provided with a threaded hole extending in its radial direction, the rotating disk is threadedly connected to the threaded hole, and the friction block has an arcuate surface, which is in friction contact with the driving shaft.

4. The wire drawing machine for producing ultra-fine steel wire according to claim 3, characterized in that: The slide bar is also provided with an automatic compensation mechanism, which can keep the arc surface of the friction block in contact with the outer peripheral surface of the driving shaft at all times.

5. The wire drawing machine for producing ultra-fine steel wire according to claim 4, characterized in that: The automatic compensation mechanism includes a chuck, a transmission drum and a clamping column. The chuck is coaxially fixed on the slide rod and is located on the side of the rotating disk away from the friction block. The transmission drum is fixedly connected to the chuck and the rotating disk at the same time. The clamping column is fixedly set on the rotating disk and extends along the axial direction of the rotating disk. The chuck is provided with a clamping groove, and the clamping column is provided with two telescopic keys distributed along its length direction. The clamping groove can be respectively engaged with the two telescopic keys.

6. The wire drawing machine for producing ultra-fine steel wire according to claim 5, characterized in that: An annular partition plate is provided between two adjacent first winding wheels, and the annular partition plate is anti-rotatingly assembled on the driving shaft. The annular partition plate is provided with transmission teeth distributed along its circumference. When the slot is engaged with the telescopic key close to the rotating disk, the transmission drum can engage with the transmission teeth and rotate on its own, thereby driving the rotating disk to move in the threaded hole toward the direction close to the driving shaft.

7. The wire drawing machine for producing ultra-fine steel wire according to claim 6, characterized in that: The telescopic key includes a sleeve, two locking balls and a connecting spring. The sleeve is arranged to penetrate the locking column along the radial direction of the locking column. The connecting spring is coaxially located inside the sleeve. The two locking balls are respectively located at both ends of the connecting spring. The locking groove is a spherical annular groove. The locking ball can enter the spherical annular groove or detach from the spherical annular groove.

8. The wire drawing machine for producing ultra-fine steel wire according to claim 5, 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, and the first spring can drive the chuck to move; the sliding rod is also threadedly connected to a second nut, and 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, and the second spring can cause the chuck to reset.

9. The wire drawing machine for producing ultra-fine steel wire according to claim 1, characterized in that: The outsides of the first winding wheel and the second winding wheel are both fixed with winding hubs, and the winding hubs are in sliding contact with the steel wire.

10. The wire drawing machine for producing ultra-fine steel wire according to claim 1, characterized in that: The machine body is further provided with a driving motor and a reducer, and the driving motor is coupled with the driving shaft through the reducer.

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