Efficient roller superfine metal wire drawing device

Abstract

The invention relates to the technical field of wire drawing equipment, and provides an efficient roller superfine metal wire drawing device. In the device, a wire drawing unit is used for drawing a metal wire rod, and in the wire drawing unit, the metal wire rod is subjected to wire drawing lubrication and cooling in the wire drawing process through lubricating liquid contained in a lubricating liquid tank; the two wire drawing rollers which are arranged in parallel in the horizontal direction right face the lubricating liquid tank in the treatment direction, two wire drawing die assemblies which are arranged in a high-low staggered mode are arranged between the two wire drawing rollers, and a plurality of wire drawing dies are installed in each wire drawing die assembly. The axes of the wire passing holes of the wire drawing dies in the two wire drawing die assemblies correspondingly coincide with the direction of the metal wire wound around the surface tangent lines of the two wire drawing rollers; a pay-off unit and a take-up unit are arranged on the two sides of the wire drawing unit respectively, the pay-off unit is used for releasing a metal wire to be drawn to the wire drawing unit, and the take-up unit is used for storing the metal wire drawn by the wire drawing unit.

Description

Technical Field

[0001] The present application relates to the technical field of wire drawing equipment, and in particular to a high-efficiency roller ultra-fine metal wire drawing device. Background Art

[0002] As electronic products, chips, and medical devices become smaller and smaller, and their integration becomes higher and higher, higher requirements are placed on the comprehensive performance of metal filaments: high conductivity and high elongation are required for performance in use; ultra-fine, ultra-long, and ultra-precision are required for process performance, such as 0.02mm diameter and ±0.0003mm deviation for integrated circuit packaging bonding wires, and more than 400,000 meters of 0.025mm wire for data transmission. The existing wire drawing device uses a single roller method, and the distance between the roller and the retractable wire is large. The wire material fluctuates greatly during the wire drawing process, resulting in a high wire breakage rate, which cannot meet the needs of integrated circuits, electronic communications, medical and other fields for high-performance ultra-fine metal wires. In addition, the wire drawing equipment is large in size and inconvenient to install and use. Summary of the invention

[0003] The purpose of the present application is to provide a high-efficiency roller ultra-fine metal wire drawing device to solve or alleviate the problems existing in the above-mentioned prior art.

[0004] In order to achieve the above objectives, this application provides the following technical solutions:

[0005] The present application provides a high-efficiency roller ultra-fine metal wire drawing device, comprising: a wire drawing unit, a wire unwinding unit and a wire taking-up unit; the wire drawing unit is used to draw the metal wire, comprising: a lubricating liquid tank, a wire drawing roller, and a wire drawing die assembly; the lubricating liquid tank contains lubricating liquid for lubricating and cooling the metal wire during the wire drawing process; there are two wire drawing rollers, the two wire drawing rollers are arranged in parallel in the horizontal direction, and both face the lubricating liquid tank in the height direction; the two wire drawing die assemblies are respectively Located between the two wire drawing rollers, they are arranged in a staggered height and are each equipped with a plurality of wire drawing dies, the axes of the wire passing holes of the two wire drawing die assemblies respectively correspond to and coincide with the directions of the metal wires that pass through the surface tangents of the two wire drawing rollers; the wire unwinding unit and the wire taking-up unit are respectively arranged on both sides of the wire drawing unit, wherein the wire unwinding unit is used to release the metal wire to be drawn to the wire drawing unit, and the wire taking-up unit is used to collect the metal wire after being drawn by the wire drawing unit.

[0006] Preferably, one of the wire drawing die assemblies is arranged close to the wire pay-off unit and parallel to the wire drawing roller, and the other wire drawing die assembly is arranged close to the wire take-up unit and inclined to the wire drawing roller.

[0007] Preferably, n wire drawing dies are evenly distributed on the obliquely arranged wire drawing die assembly, n+1 wire drawing dies are evenly distributed on the wire drawing die assembly arranged parallel to the wire drawing roller, and the metal wire is wound n times on each of the wire drawing rollers; wherein n is a positive integer.

[0008] Preferably, the wire drawing die assembly comprises: a die frame and the wire drawing die, the die frame is provided with a plurality of die placement holes along the length direction, and the plurality of die placement holes are respectively installed with the wire drawing dies whose wire drawing sizes gradually decrease along the length direction of the die frame.

[0009] Preferably, the wire drawing die assembly also includes: a lubricating liquid pipe, which is arranged parallel to the die frame and has a plurality of lubricating liquid nozzles arranged along the length direction, each of the lubricating liquid nozzles facing the center of a wire hole of the wire drawing die, so as to spray the lubricating liquid in the lubricating liquid tank to the center of the wire drawing die.

[0010] Preferably, the two drawing rollers are independently driven by separate servo motors.

[0011] Preferably, the drawing roller is made of ceramic or has ceramic sprayed on the surface, and has a hardness higher than 400 HV.

[0012] Preferably, a servo tension mechanism is provided between the wire drawing unit and the wire unwinding unit, and between the wire drawing unit and the wire taking-up unit, so as to tension the metal wire entering and exiting the wire drawing unit.

[0013] Beneficial effects:

[0014] In the high-efficiency roller ultra-fine metal wire drawing device provided in the embodiment of the present application, the metal wire is drawn by a wire drawing unit, and in the wire drawing unit, the metal wire is lubricated and cooled during the wire drawing process by the lubricating liquid contained in the lubricating liquid tank; two wire drawing rollers arranged in parallel in the horizontal direction face the lubricating liquid tank along the handling direction, and two wire drawing die assemblies arranged in high and low dislocations are provided between the two wire drawing rollers, and each wire drawing die assembly is installed with multiple wire drawing dies, and the axes of the wire passing holes of the wire drawing dies in the two wire drawing die assemblies respectively correspond to and coincide with the directions of the metal wires that pass through the surface tangents of the two wire drawing rollers; a wire unwinding unit and a wire taking-up unit are respectively provided on both sides of the wire drawing unit, the wire unwinding unit is used to release the metal wire to be drawn to the wire drawing unit, and the wire taking-up unit is used to take up the metal wire after being drawn by the wire drawing unit. Therefore, by arranging two wire drawing die assemblies between two wire drawing rollers with height offset, the wire drawing efficiency of ultra-fine metal wires can be effectively improved, the wire breakage rate and wire drawing cost can be reduced, the wire drawing uniformity is good, and the surface reduction rate is stable; the double roller design increases the slip coefficient, reduces the wire breakage rate, and ensures the long length drawing of the metal wire; at the same time, the double roller and double die assembly structure makes the equipment more compact and more stable, effectively reducing the wire drawing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings in the specification, which constitute a part of the present application, are used to provide further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0016] in:

[0017] Figure 1 A schematic diagram of the principle of a high-efficiency roller ultra-fine metal wire drawing device provided according to some embodiments of the present application;

[0018] Figure 2 A schematic structural diagram of a high-efficiency roller ultra-fine metal wire drawing device provided according to some embodiments of the present application;

[0019] Figure 3 for Figure 2 Another structural schematic diagram of the high-efficiency roller ultra-fine metal wire drawing device shown.

[0020] Description of reference numerals:

[0021] 1. Wire drawing platform; 2. Support plate; 3. Pay-off unit; 4. Servo tension mechanism; 5. Wire drawing roller; 6. Wire drawing die assembly; 7. Wire taking-up unit. DETAILED DESCRIPTION

[0022] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Each example is provided by way of explanation of the present application and does not limit the present application. In fact, it will be clear to those skilled in the art that modifications and variations may be made in the present application without departing from the scope or spirit of the present application. For example, a feature shown or described as a part of an embodiment may be used in another embodiment to produce yet another embodiment. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the embodiments of the present invention should belong to the scope of protection of the embodiments of the present invention.

[0023] The existing wire drawing process uses a single roller or a tower wheel for wire drawing. This process has the following disadvantages: (1) The single roller for wire drawing has a large equipment volume, a long distance between the wire drawing roller and the wire collection, and large fluctuations in the wire material, resulting in a high wire breakage rate and a low yield rate; (2) The equipment volume is large and the cost is high, which increases the wire drawing cost; (3) Single roller drawing requires frequent replacement of materials and equipment, high work intensity, low efficiency, large fluctuations in process parameters, and poor consistency of the processed wire. These problems seriously affect the efficiency, consistency and performance of ultra-fine wire processing, and bring inconvenience to the subsequent processing and use of ultra-fine wire.

[0024] Based on this, the present application embodiment proposes a high-efficiency roller ultra-fine metal wire drawing device, such as Figures 1 to 3 As shown, the wire drawing device includes: a wire drawing unit, a wire release unit 3 and a wire take-up unit 7. The wire drawing unit is used to draw metal wires, and the wire release unit 3 and the wire take-up unit 7 are respectively arranged on both sides of the wire drawing unit. The wire release unit 3 is used to release the metal wires to be drawn to the wire drawing unit, and the wire take-up unit 7 is used to take in the metal wires after being drawn by the wire drawing unit.

[0025] In the present application, the wire drawing unit, the wire release unit 3, and the wire take-up unit 7 are all installed on the wire drawing platform 1. Specifically, a support plate 2 is provided on the wire drawing platform 1, and the support plate 2 is higher than the upper surface of the wire drawing platform 1; along the length direction of the wire drawing platform 1, the wire release unit 3, the wire drawing unit, and the wire take-up unit 7 are sequentially provided on the support plate 2.

[0026] In the wire drawing unit, a lubricating liquid tank, a wire drawing roller 5 and a wire drawing die assembly 6 are provided. The lubricating liquid tank is a rectangular tank with an opening at the upper end, and the bottom surface is located on the wire drawing platform 1, and is fixed to the support plate 2 by bolt fasteners. The gap at the connection between the lubricating liquid tank and the support plate 2 is sealed by a sealing rubber gasket to prevent the lubricating liquid in the lubricating liquid tank from flowing out. The rectangular tank of the lubricating liquid tank is filled with lubricating liquid, and the lubricating liquid in the rectangular tank is sprayed by a pumping unit arranged in the lubricating liquid tank, so as to realize the wire drawing lubrication and cooling of the metal wire during the wire drawing process, and effectively reduce the wire drawing breakage rate.

[0027] There are two wire drawing rollers 5, and the two wire drawing rollers 5 are arranged in parallel in the horizontal direction, and they are all facing the lubricating liquid tank in the height direction. Each wire drawing roller 5 is independently driven by an independent wire drawing servo motor to avoid the transmission error when one servo motor drives two wire drawing rollers 5 through chain drive or belt drive, and effectively improves the wire drawing accuracy. Among them, the wire drawing servo motor is detachably mounted on the support plate 2 through a bolt fastening assembly, and the output end of the wire drawing servo motor is detachably connected to the wire drawing roller 5 through a sealing flange using a bolt assembly. Here, the wire drawing roller 5 is made of ceramic material or sprayed with ceramic on the surface, and the hardness is higher than 400HV, so as to effectively improve the wear resistance of the wire drawing roller 5, extend the service life of the wire drawing roller 5, and reduce the wear on the wire material.

[0028] There are two wire drawing die assemblies 6 arranged corresponding to the two wire drawing rollers 5. The two wire drawing die assemblies 6 are both located between the two wire drawing rollers 5 and are arranged in a staggered manner in the height direction so that the installed wire drawing dies correspond to the wire drawing rollers 5. Specifically, the die frame in the wire drawing die assembly 6 is installed on the support plate 2, and a plurality of die placement holes are provided on the die frame. The plurality of die placement holes are respectively installed with wire drawing dies whose wire drawing sizes gradually decrease along the length direction of the die frame, and the axis of the wire passing hole of each wire drawing die coincides with the direction of the metal wire material that bypasses the surface tangent of the wire drawing roller 5. That is to say, along the length direction of the wire drawing platform 1, the wire drawing die on the wire drawing die frame on the left side is in a straight line with the upper tangent of the wire drawing roller 5 on the left side, and the wire drawing die on the wire drawing die frame on the right side is in a straight line with the lower tangent of the wire drawing roller 5 on the right side. Thereby, when the metal wire is wound between the two wire drawing rollers 5, it can be wound in and out along the tangent direction of the wire drawing roller 5 and face the wire passing hole of the wire drawing die, thereby avoiding friction and wear between the metal wire and the wire drawing die, effectively reducing the wire breakage rate, and improving the wire drawing efficiency and quality.

[0029] In a specific example, one of the two wire drawing die assemblies 6 is arranged parallel to the wire drawing roller 5 near the wire pay-off unit 3, and the other wire drawing die assembly 6 is arranged obliquely to the wire drawing roller 5 near the wire take-up unit 7. The obliquely arranged wire drawing die assembly 6 has n wire drawing dies evenly distributed along the length direction, and the wire drawing die assembly 6 arranged parallel to the wire drawing roller 5 has n+1 wire drawing dies evenly distributed, and the metal wire is wound n times on each wire drawing roller 5; wherein n is a positive integer.

[0030] That is to say, in the two wire drawing die assemblies 6 arranged with a height difference between the two wire drawing rollers 5, the die frame of one wire drawing die assembly 6 is installed perpendicular to the support plate 2, and the other wire drawing die assembly 6 is installed obliquely to the support plate 2, so as to effectively ensure that the center of the wire drawing die located in the die placement hole can coincide with the direction of the metal wire that bypasses the surface tangent of the wire drawing roller 5, while avoiding the unbalanced load of the metal wire on the wire drawing roller 5 and the friction and wear between the metal wire and the wire drawing die, thereby effectively reducing the wire breakage rate and improving the wire drawing efficiency and quality.

[0031] Here, it should be noted that the inclination angle (relative to the support plate 2) of the wire drawing die assembly 6 installed obliquely to the support plate 2 can be determined based on the distance between the two wire drawing rollers 5 and the distance between the corresponding die placement holes in the two wire drawing die assemblies 6 (that is, the distance between the corresponding two wire drawing dies), so as to further ensure that the center line of the wire drawing die and the tangent line of the two wire drawing rollers 5 are on the same straight line.

[0032] During the wire drawing process, driven by the pumping unit, the lubricating liquid in the lubricating liquid tank is sprayed to the center of the wire drawing die through the lubricating liquid pipe arranged in parallel with the die frame. Specifically, the lubricating liquid pipe is detachably mounted on the support plate 2 parallel to the die frame and is connected to the pumping unit; multiple lubricating liquid nozzles are arranged along the length direction of the lubricating liquid pipe, and each lubricating liquid nozzle is directly facing the center of the wire hole of a wire drawing die, so that under the action of the pumping unit, the lubricating liquid in the lubricating liquid tank is sprayed to the center of the wire drawing die, and the metal wire passing through the center of the wire drawing die during the wire drawing process is lubricated and cooled, further reducing the wire breakage rate of wire drawing, and improving the wire drawing quality and efficiency.

[0033] In the embodiment of the present application, the wire-releasing unit 3 and the wire-receiving unit 7 are respectively arranged on both sides of the wire-drawing unit, and the wire-releasing unit 3 releases the metal wire to be drawn to the wire-drawing unit, and the wire-receiving unit 7 receives the metal wire drawn by the wire-drawing unit. A servo tension mechanism 4 is arranged between the wire-releasing unit 3 and the wire-drawing unit, and between the wire-drawing unit and the wire-receiving unit 7, so as to tension the metal wire entering and exiting the wire-drawing unit.

[0034] The pay-off unit 3 automatically adjusts the pay-off speed of the metal wire to pay-off. The pay-off drum is detachably mounted on the pay-off shaft, and the pay-off shaft is driven by the pay-off servo motor mounted on the support plate 2, thereby driving the pay-off drum to rotate. After the metal wire is paid out from the pay-off drum, it enters the servo tension mechanism 4, and the servo tension mechanism 4 automatically adjusts the tension of the metal wire.

[0035] Among them, in the servo tension mechanism 4, the wire wheel of the tension sensor is fixed on the guide wheel shaft through a bearing and a nut, the guide wheel shaft is threadedly connected to one end of the tension rod, the tension rod is fixed to the tension servo motor of the tension sensor through a nut, and the tension servo motor is fixed to the wire drawing platform 1 by bolts through a support rod. The metal wire wire coming out of the pay-off reel bypasses the wire wheel, drives the tension rod to swing, and adjusts the tension of the metal wire wire, and then effectively ensures that the tension on the metal wire wire remains constant through tension adjustment. For example, when the pay-off speed is lower than the speed of the equilibrium state at a certain moment, and the take-up speed is constant, the tension on the metal wire wire will increase, and then the metal wire wire pulls the wire wheel upward, drives the swing angle of the tension rod to increase, and the pay-off speed increases, thereby reducing the tension on the metal wire wire; when the pay-off speed increases to a certain extent, the tension on the metal wire wire becomes smaller than the set tension, the wire wheel moves downward, drives the swing angle of the tension rod to decrease, and the pay-off speed decreases, thereby increasing the tension on the metal wire wire. Thereby, the tension rod is driven to swing by the metal wire, the wire-releasing speed is adjusted, and then the tension on the metal wire is adaptively adjusted.

[0036] In a specific example, in the servo tension mechanism 4, the tension sensor is rotatably mounted on the support plate 2, one end of the tension rod is connected to the tension sensor, and the other end is rotatably mounted on the wire pulley. During the wire-paying process, when the wire-paying speed is fast, the wire pulley will move downward under the action of its own weight, and then drive the tension sensor to rotate clockwise through the tension rod, and the tension sensor sends a rotation electrical signal to the programmable logic controller, which controls the rotation speed of the wire-paying servo motor driving the wire-paying shaft to tighten the wire-paying speed; when the wire-paying speed is slow, the metal wire will tighten, driving the wire pulley to move upward, and then driving the tension sensor to rotate counterclockwise through the tension rod, and the tension sensor sends a rotation electrical signal to the programmable logic controller, which drives the rotation speed of the wire-paying servo motor driving the wire-paying shaft to keep the wire-paying speed consistent with the wire drawing speed.

[0037] The wire pulley is made of ABS plastic and has weight-reducing holes on the web to reduce the weight of the wire pulley and reduce the moment of inertia. At the same time, the guide groove of the wire pulley is V-shaped to ensure that the metal wire can be located in the center position. The tension rod is made of ultra-light materials such as carbon fiber or titanium alloy to reduce the weight of the tension rod and improve the force transmission sensitivity of the tension rod.

[0038] After the metal wire is drawn by the wire drawing unit, it is wound up by the wire taking-up unit 7. A servo tension mechanism 4 is also provided between the wire drawing unit and the wire taking-up unit 7, which is used to automatically adjust the wire taking-up speed of the metal wire. Here, the servo tension mechanism 4 between the wire drawing unit 3 and the wire drawing unit and the servo tension mechanism 4 between the wire drawing unit and the wire taking-up unit 7 are similar in structure and work in the same principle, and are not described one by one here. Thus, the wire drawing and wire taking-up speeds of the metal wire are controlled by the servo tension mechanism 4 before and after the wire drawing, so as to achieve uniformity and stability of the metal wire during the wire drawing process.

[0039] After the wire drawing device is powered on, the drawn metal wire is fixed on the pay-off shaft through the pay-off reel, and at the same time, the head of the metal wire to be drawn is placed in the wire-making groove for diameter reduction; then, the reduced metal wire is wound on the wire drawing roller 5 near the pay-off unit 3 through the pay-off guide wheel, and then passed through the drawing die on the corresponding drawing die frame, and then wound on another wire drawing roller 5 near the take-up unit 7; then passed through the drawing die corresponding to the other wire drawing roller 5 near the take-up unit 7, and then wound back to the wire drawing roller 5 near the pay-off unit 3. The cycle is repeated in sequence, and after the metal wire passes through all the dies, it is wound on the take-up reel of the take-up unit 7; finally, the equipment is started to start wire drawing.

[0040] Through the two drawing die assemblies 6 between the two drawing rollers 5 arranged in a high and low offset manner in the drawing unit, the drawing efficiency of the ultra-fine metal wire is effectively improved, the wire breakage rate is reduced, the wire drawing uniformity is good, and the surface reduction rate is stable; at the same time, the design of the double drawing rollers 5 effectively increases the slip coefficient, further reduces the wire breakage rate, and ensures the long length drawing of the metal wire. In addition, the parallel and offset arrangement of the double drawing rollers 5 and the double drawing die assembly 6 in the horizontal direction makes the structure of the drawing unit more compact and more stable, effectively reducing the wire drawing cost.

[0041] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean 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, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0045] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0046] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An efficient roller ultra-fine metal wire drawing device, characterized in that: include: Wire drawing unit, wire paying unit and wire taking-up unit, The wire drawing unit is used to draw metal wires, and comprises: a lubricating liquid tank, a wire drawing roller, and a wire drawing die assembly; The lubricating liquid tank is filled with lubricating liquid, which is used to lubricate and cool the metal wire during the wire drawing process; There are two wire drawing rollers, which are arranged in parallel in the horizontal direction and face the lubricating liquid tank in the height direction; The two wire drawing die assemblies are respectively located between the two wire drawing rollers, arranged in a high and low staggered manner, and are each equipped with a plurality of wire drawing dies, and the axes of the wire passing holes of the wire drawing dies in the two wire drawing die assemblies respectively correspond to and coincide with the directions of the metal wires passing through the surface tangents of the two wire drawing rollers; The wire-releasing unit and the wire-receiving unit are respectively arranged on both sides of the wire-drawing unit, wherein the wire-releasing unit is used to release the metal wire to be drawn to the wire-drawing unit, and the wire-receiving unit is used to receive the metal wire after being drawn by the wire-drawing unit.

2. The high-efficiency roller ultra-fine metal wire drawing device according to claim 1 is characterized in that: One of the wire drawing die assemblies is arranged close to the wire paying-off unit and parallel to the wire drawing roller, and the other wire drawing die assembly is arranged close to the wire taking-up unit and inclined to the wire drawing roller.

3. The high-efficiency roller ultra-fine metal wire drawing device according to claim 2 is characterized in that: The inclined wire drawing die assembly is evenly distributed with n wire drawing dies, the wire drawing die assembly arranged parallel to the wire drawing roller is evenly distributed with n+1 wire drawing dies, and the metal wire is wound n times on each wire drawing roller; wherein n is a positive integer.

4. The high-efficiency roller ultra-fine metal wire drawing device according to claim 1 is characterized in that: The wire drawing die assembly comprises: a die frame and the wire drawing die, wherein the die frame is provided with a plurality of die placement holes along the length direction, and the plurality of die placement holes are respectively installed with the wire drawing dies whose wire drawing sizes gradually decrease along the length direction of the die frame.

5. The high-efficiency roller ultra-fine metal wire drawing device according to claim 4 is characterized in that: The wire drawing die assembly also includes: a lubricating liquid pipe, which is arranged in parallel with the die frame and has a plurality of lubricating liquid nozzles arranged along the length direction, each of the lubricating liquid nozzles facing the center of a wire hole of the wire drawing die to spray the lubricating liquid in the lubricating liquid tank to the center of the wire drawing die.

6. The high-efficiency roller ultra-fine metal wire drawing device according to claim 1, characterized in that: The two drawing rollers are independently driven by separate servo motors.

7. The high-efficiency roller ultra-fine metal wire drawing device according to claim 1, characterized in that: The wire drawing roller is made of ceramic or has ceramic sprayed on the surface, and has a hardness higher than 400 HV.

8. The high-efficiency roller ultra-fine metal wire drawing device according to claim 1, characterized in that: A servo tension mechanism is provided between the wire drawing unit and the wire unwinding unit, and between the wire drawing unit and the wire taking-up unit, so as to tension the metal wire material entering and exiting the wire drawing unit.

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