Continuous tungsten and molybdenum wire drawing device

Abstract

This application provides a continuous tungsten and molybdenum wire drawing device, relating to the technical field of wire drawing equipment. The continuous tungsten and molybdenum wire drawing device includes a device body, a drawing assembly, and a take-up roller. It also includes a collar rotatably mounted on the device body, driven to rotate by a power source. Multiple sliders are arranged circumferentially along the collar, each slider reciprocating radially along the collar. A spring is provided between the slider and the collar, applying a thrust towards the center of the collar to the slider. A centrifugal counterweight is fixed on the slider; when the collar rotates, the counterweight generates a centrifugal force that causes the slider to move away from the center. A cleaning brush for cleaning the surface of the molybdenum wire is installed at the inner end of the slider. The spring thrust and the centrifugal force of the counterweight work together to ensure the cleaning brush adheres to the surface of the molybdenum wire with a substantially constant pressure, and automatically moves towards the center to compensate after the cleaning brush wears down.

Description

Technical Field

[0001] This application relates to the field of wire drawing equipment technology, and in particular to a continuous tungsten wire and molybdenum wire drawing device. Background Technology

[0002] In the production process of molybdenum wire, the thicker wire blank needs to be drawn to the required diameter through drawing equipment. The drawing equipment usually includes a wire feeding mechanism, a drawing die, a cleaning mechanism, and a winding mechanism. After the wire is drawn and surface cleaned in sequence, it is wound into a disc by the winding roller.

[0003] In related technologies, a typical molybdenum wire drawing device has a rotary cleaning mechanism located behind the drawing die. This cleaning mechanism includes a rotating collar driven by a motor, on which multiple cleaning brushes are fixedly mounted. The bristles of the cleaning brushes directly contact the surface of the molybdenum wire. As the collar rotates, the cleaning brushes revolve around the wire, removing adhering substances from the wire surface. This structure improves cleaning efficiency through mechanical rotation and, to some extent, improves the surface quality of the wire.

[0004] However, existing molybdenum wire drawing equipment still has the following shortcomings: the bristles of the cleaning brush gradually wear down and shorten during long-term friction with the molybdenum wire, resulting in a continuous decrease in the contact pressure between the bristles and the wire surface, and a decline in the cleaning effect. Operators need to frequently stop the machine to check and manually replace or adjust the cleaning brush; otherwise, residual deposits will be pressed into the wire surface during subsequent winding, forming pits or scratches. Because the wear rate of the cleaning brush is affected by various factors such as the wire material and drawing speed, it is difficult to accurately predict when to replace it, which directly affects the continuous operation stability of the wire drawing production line and the product yield. Summary of the Invention

[0005] This application provides a continuous tungsten wire and molybdenum wire drawing device, which solves the problem that the bristles of the cleaning brush will gradually wear down and become shorter during long-term friction, resulting in a decrease in cleaning effect.

[0006] The continuous tungsten wire and molybdenum wire drawing device of this application adopts the following technical solution: In a first aspect, embodiments of this application provide a continuous tungsten wire / molybdenum wire drawing device, which includes a device body, a drawing assembly mounted on the device body, an auxiliary assembly for assisting in the winding of molybdenum wire, and a winding roller for winding molybdenum wire. The device body is provided with a rotatable drum, and further includes... A collar fixedly installed on the rotating drum; Multiple sliders are arranged circumferentially along the collar, and each slider is mounted on the collar in a radially reciprocating manner. A spring is disposed between the slider and the collar, the spring applying a thrust toward the center of the collar to the slider; The centrifugal counterweight fixed on the slider generates a centrifugal force that causes the slider to move away from the center when the collar rotates. A cleaning brush mounted on the side of the slider, the cleaning brush being used to contact and clean the surface of the molybdenum wire; The combined force of the spring and the centrifugal force of the centrifugal counterweight causes the cleaning brush to adhere to the surface of the molybdenum wire with a basically constant pressure, and automatically moves towards the center to compensate after the cleaning brush wears down.

[0007] By adopting the above technical solution, a radially sliding slider is set on the collar, and a spring and a centrifugal counterweight are set between the slider and the collar. The inward thrust of the spring and the outward centrifugal force of the counterweight, plus the pressure between the cleaning brush and the molybdenum wire, are balanced to keep the contact pressure between the cleaning brush and the molybdenum wire surface basically constant. When the bristles of the cleaning brush gradually wear down and shorten due to long-term friction, the gap between the bristles and the wire increases, causing the balance to be broken. The spring will push the slider to move automatically towards the center, so that the bristles re-adhere to the wire surface, thereby automatically compensating for the wear. This achieves the effect of extending the effective service life of the cleaning brush without the need for manual shutdown for adjustment or brush replacement, and transforms passive wear into active compensation.

[0008] In one alternative implementation, the inner ring of the collar is provided with a plurality of radially extending slide rails, each slider is slidably fitted in the corresponding slide rail, the spring is installed between the bottom of the slide rail and the slider, and the centrifugal counterweight is fixed at the end of the slider near the center of the collar.

[0009] By adopting the above technical solution, a radial slide rail is opened in the inner ring of the collar, allowing the slider to slide directionally along the slide rail. Simultaneously, a spring is installed between the bottom of the slide rail and the slider, ensuring that the spring's thrust is directly directed along the slide rail axis towards the center. The centrifugal force of the centrifugal counterweight also points outward along the same axis. These two forces act in opposite directions and collinearly, reducing slider jamming or uneven wear caused by lateral forces. The slide rail structure provides precise guidance for the slider, ensuring that the cleaning brush always moves radially during wear compensation, and the contact angle between the bristles and the filaments remains constant, thus maintaining a consistent cleaning effect. This improves the smoothness of slider movement and repeatability, while reducing sliding resistance.

[0010] In one alternative implementation, the slider is further provided with a wear indicator structure, which includes a scale line on the side of the slide rail and a transparent observation window opened at the corresponding position on the slide rail. When the slider moves to the limit position due to wear from the cleaning brush, the slider aligns with the scale line.

[0011] By adopting the above technical solution, scale lines are set on the side of the slide rail, and a transparent observation window is opened at the corresponding position of the slide rail. Operators can directly observe the position of the slider relative to the scale lines without disassembling the machine. When the cleaning brush wears to its limit, the slider moves to the innermost end, which aligns with the mark on the observation window, indicating that the brush head needs to be replaced. This achieves intuitive and accurate visual feedback on the amount of wear, with low cost and high reliability.

[0012] In one optional implementation, a transmission mechanism for driving the cleaning brush to rotate is further included. The transmission mechanism includes a second sleeve connected to the rotating drum via a one-way bearing, driven pulleys fixed on each cleaning brush, and annular elastic belts in a number matching the number of cleaning brushes. The surface of the second sleeve is provided with grooves in a number matching the number of driven pulleys. Each elastic belt is respectively sleeved on an annular groove of the second sleeve and a corresponding driven pulley. When the sleeve revolves, the driven pulleys rotate around their own axes under the drive of the elastic belts, thereby causing the cleaning brush to rotate.

[0013] By adopting the above technical solution, when the collar drives the slider and driven pulley to revolve around the central fixed cylinder, the elastic belt is simultaneously wrapped around the stationary central fixed cylinder and the rotating driven pulley. The driven pulley is forced to rotate around its own axis, thereby driving the cleaning brush to rotate. This rotational motion causes the contact point between the bristles and the filament surface to constantly change, reducing localized excessive wear or uneven cleaning caused by the bristles rubbing against the filament at the same angle. This achieves the effect of improving cleaning uniformity and thoroughness, while extending the overall service life of the bristles.

[0014] In one optional implementation, the elastic belt is a circular rubber belt made of polyurethane. The annular groove on the central fixed cylinder and the annular groove on the driven pulley are both semi-circular cross sections. The elastic belt is sleeved in the corresponding annular groove and is in a stretched state. The friction between the elastic belt and the central fixed cylinder and the driven pulley is maintained by the contraction force of the elastic belt itself.

[0015] By adopting the above technical solution, polyurethane material exhibits excellent wear resistance and elasticity, maintaining stable shrinkage force under long-term tensile and bending conditions, thus providing reliable friction transmission. The semi-circular groove and the circular belt work together to create a self-centering effect, preventing the belt from slipping or running off-center during operation. Due to the belt's elasticity, when the slider moves radially due to brush wear, the belt can automatically extend or contract to compensate for changes in center distance, eliminating the need for an additional tensioning mechanism. This results in reliable transmission, strong self-adaptability, simple structure, and low cost.

[0016] In one alternative implementation, a storage tank for storing cleaning fluid, a drip nozzle connected to the storage tank, and a cleaning and wiping unit disposed downstream of the drip nozzle are further provided downstream of the cleaning component. The drip nozzle is aligned with the top of the cleaning cloth. The cleaning and wiping unit includes an active roller, a driven roller, and a cleaning cloth sleeved on the surfaces of the active roller and the driven roller. A pressing unit for pressing the cleaning cloth onto the surface of the molybdenum wire is disposed above the cleaning cloth.

[0017] By adopting the above technical solution, a wet cleaning component is added downstream of the brush cleaning component, including a liquid reservoir, a drip nozzle, and a cleaning and wiping unit. The molybdenum wire first passes under the drip nozzle, where the cleaning solution is evenly applied to the wire surface, dissolving or softening any stubborn residue. Then, the wire enters the cleaning and wiping unit, where the cleaning cloth adheres tightly to the wire surface under the pressure of the clamping unit, wiping away the dissolved dirt. Furthermore, the portion of the cleaning cloth that has been wetted after wiping the molybdenum wire can dry itself during subsequent winding, continuing to wipe the wire during subsequent wiping processes. This improves the surface cleanliness of the molybdenum wire and reduces the risk of dents or scratches caused by residue pressing into the wire surface during subsequent winding.

[0018] In one alternative implementation, the pressing unit includes a fixed base and a wiping block detachably connected to the fixed base. The wiping block is located directly above the cleaning cloth and the molybdenum wire. The height of the wiping block is preset such that when the cleaning cloth passes over the wiping block, the cleaning cloth is pressed against the surface of the molybdenum wire.

[0019] By adopting the above technical solution, a fixed base and a detachable wiping block are used. The height of the wiping block is preset to ensure that the cleaning cloth is stably pressed against the surface of the molybdenum wire. This guarantees uniform and repeatable contact pressure between the cleaning cloth and the wire, reducing situations where insufficient pressure leads to incomplete wiping or excessive pressure causes wire deformation or excessive wear of the cleaning cloth. The detachable connection between the wiping block and the fixed base facilitates quick replacement after the block wears out, and also facilitates adjustment and maintenance of the cleaning cloth path. This achieves a simple structure, low cost, and the preset height ensures consistent wiping pressure during mass production.

[0020] In one alternative implementation, the wiping block is buoyantly mounted on a fixed base by a spring. The lower surface of the wiping block is arc-shaped and covered with a wear-resistant polytetrafluoroethylene film. When the cleaning cloth passes over the wiping block, the spring presses the wiping block downward, so that the cleaning cloth always adheres to the surface of the molybdenum wire.

[0021] By adopting the above technical solution, a spring is used to float the wiping block on the fixed base, while the lower surface of the block is designed to be arc-shaped and covered with a polytetrafluoroethylene (PTFE) film. The spring provides adaptive clamping force; when there are slight fluctuations in the diameter of the molybdenum wire or changes in the thickness of the cleaning cloth, the wiping block can automatically float up and down, maintaining a constant contact pressure and reducing the possibility of jamming or sudden pressure changes that may occur with rigid clamping. The arc-shaped lower surface reduces the frictional resistance between the cleaning cloth and the block, preventing the cleaning cloth from being pulled apart or misaligned. The PTFE film has an extremely low coefficient of friction and excellent wear resistance, further reducing the movement resistance of the cleaning cloth and extending the service life of the block. This achieves the effect of being compatible with tolerance fluctuations in wire diameter while reducing cleaning cloth wear and running resistance.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. A radially sliding slider is installed on the collar, and the thrust of the spring and the centrifugal force of the centrifugal counterweight are used to balance each other, so that the cleaning brush always adheres to the surface of the molybdenum wire with constant pressure. When the brush bristles wear, the spring automatically pushes the slider towards the center to compensate, without the need for manual shutdown for adjustment. This transforms passive wear into active compensation, significantly extending the effective service life of the cleaning brush and improving the stability of continuous equipment operation. 2. A self-rotating transmission mechanism consisting of a central fixed cylinder, a driven pulley, and a ring-shaped elastic belt is adopted. When the collar revolves, the elastic belt drives the driven pulley to rotate around its own axis, causing the cleaning brush to rotate. This structure continuously changes the contact point between the bristles and the bristles, reducing excessive local wear and uneven cleaning, improving the comprehensiveness and uniformity of cleaning, and requiring no additional power source, making the structure compact and reliable. 3. A wet cleaning component is added downstream of the brush cleaning unit. Cleaning solution is dripped onto the surface of the wire through a drip nozzle to dissolve stubborn deposits, which are then removed by the cleaning and wiping unit. The wetted part of the cleaning cloth can be naturally dried during the subsequent winding process, realizing the recycling of dry and wet areas. This significantly improves the surface cleanliness of the molybdenum wire and reduces the risk of dents or scratches caused by residue pressing in during winding. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a continuous tungsten wire and molybdenum wire drawing device.

[0024] Figure 2 This is a schematic diagram of the collar and cleaning brush.

[0025] Figure 3 A schematic diagram of the cleanup component.

[0026] Explanation of reference numerals in the attached drawings: 1. Equipment body; 2. Wire drawing assembly; 3. Auxiliary assembly; 4. Rewinding roller; 5. Collar; 6. Slider; 7. Centrifugal counterweight; 8. Cleaning brush; 9. Slide rail; 10. Scale line; 11. Second sleeve; 12. Driven pulley; 13. Elastic belt; 14. Liquid storage tank; 15. Drop nozzle; 16. Cleaning cloth; 17. Fixing base; 18. Wiping pressure block. Detailed Implementation

[0027] The present application will be further described in detail below with reference to all the accompanying drawings in the embodiments of the present application.

[0028] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. "Fixed connection" refers to a connection where the relative positional relationship remains unchanged after the connection. It should be understood that when component A is fixedly connected to component C via component B, changes in the relative positional relationship due to deformation of components A, B, and C are permissible. The integrated structure obtained by the two components through a one-piece molding process means that during the formation of one of the two components, that component is connected to the other component, without requiring further processing (such as bonding, welding, snap-fit ​​connections, or screw connections) to connect the two components.

[0029] The directional terms mentioned in the embodiments of this application, such as "upper", "lower", "side", etc., are only for reference to the direction of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this application, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0030] The term "multiple" refers to at least two. The term "more than" includes the stated number. The term "and / or" describes a relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0031] This application discloses a continuous tungsten wire and molybdenum wire drawing device.

[0032] Reference Figure 1A continuous tungsten wire and molybdenum wire drawing device includes a device body 1, on which a drawing assembly 2, an auxiliary assembly 3, and a winding roller 4 for winding molybdenum wire are fixedly installed.

[0033] A cleaning component is provided between the wire drawing assembly 2 and the winding roller 4. This cleaning component is used to remove lubricant residues and metal debris that adhere to the surface of the molybdenum wire during the wire drawing process.

[0034] The cleaning assembly includes a frame fixedly mounted on the equipment body 1, a first motor fixedly mounted on the frame, a control lever fixedly connected to the output end of the first motor, a first pulley fixedly connected to one end of the control lever, a transmission belt sleeved on the first pulley, the other end of the transmission belt sleeved on a second pulley, a rotating drum fixedly connected to the second pulley, a first sleeve connected to the surface of the rotating drum via a one-way bearing, the first sleeve remaining stationary when the rotating drum rotates, a support base provided on the equipment body 1, a through hole provided at the upper end of the support base, and the support base sleeved on the surface of the first sleeve.

[0035] Reference Figure 2 A collar 5 is fixedly connected to the end of the rotating cylinder away from the support base. The collar 5 has three radially extending slide rails 9, the cross-sectional shape of which is rectangular. Each slide rail 9 has a sliding block 6 that can slide back and forth along the slide rail 9.

[0036] A compression spring is installed between the end of the slide rail 9 away from the collar 5 and the slider 6. One end of the compression spring abuts against the end of the slide rail 9, and the other end abuts against the inner end face of the slider 6, thereby applying a pushing force to the slider 6 pointing towards the center of the collar 5.

[0037] A centrifugal counterweight 7 is fixed to one end of the slider 6 near the center of the collar 5 by a screw. The centrifugal counterweight 7 is made of a high-density metal material. When the collar 5 rotates, the centrifugal counterweight 7 generates a centrifugal force that causes the slider 6 to move away from the center.

[0038] A cleaning brush 8 is mounted on the side of the slider 6. The cleaning brush 8 includes a brush handle, a brush head, and bristles fixed to the brush head. The bristles are used to contact the surface of the molybdenum wire. During the operation of the equipment, the thrust of the compression spring and the centrifugal force of the centrifugal counterweight 7 plus the pressure of the bristles contacting the molybdenum wire are balanced with each other, so that the bristles of the cleaning brush 8 adhere to the surface of the molybdenum wire with a basically constant pressure.

[0039] When the bristles of cleaning brush 8 gradually wear down and shorten due to long-term friction, the gap between the bristles and the filament increases, and the original force balance is broken. The compression spring will push the slider 6 to move automatically towards the center, so that the bristles re-adhere to the surface of the filament, thereby automatically compensating for the amount of wear. There is no need for manual stopping to adjust or replace the brush, thus achieving long-term stability of cleaning pressure.

[0040] One side wall of the slide rail 9 is made of transparent polycarbonate sheet, with scale lines 10 engraved on the outer surface of the transparent wall. As the slider 6 gradually moves inward due to wear of the cleaning brush 8, the position of the slider 6 relative to the scale line 10 changes. When the slider 6 moves to its limit position, it contacts the scale line 10, indicating that the cleaning brush 8 needs to be replaced. Operators can directly observe the wear through the transparent wall without disassembling the machine, achieving visual feedback on the amount of wear and reducing waste caused by premature replacement or cleaning failure caused by late replacement.

[0041] A second sleeve 11 is provided on the side of the rotating drum near the cleaning brush 8. The second sleeve 11 is also connected to the rotating drum through a one-way bearing, so that the second sleeve 11 can remain stationary relative to the rotation of the rotating drum.

[0042] One end of the brush handle is fixedly connected to the slider 6, and the other end of the brush handle is fixed with a driven pulley 12. The driven pulley 12 is disc-shaped and has a ring groove on its side.

[0043] One side of the driven pulley 12 is rotatably connected to the brush handle, and the other side of the driven pulley 12 is fixedly connected to the brush head. Three grooves are formed on the surface of the second sleeve 11, each groove also having a semi-circular cross-section.

[0044] An annular elastic belt 13 is fitted between the annular groove of each driven pulley 12 and a corresponding groove on the rotating drum. The elastic belt 13 is a circular rubber belt made of polyurethane with a circular cross-section that matches the semi-circular groove.

[0045] The elastic belt 13 is fitted into the corresponding groove and is in a stretched state, relying on its own contraction force to maintain the friction between itself and the rotating drum and the driven pulley 12. When the rotating drum is driven to rotate by the motor, the rotating drum simultaneously drives the three driven pulleys 12 to rotate through the three elastic belts 13, and the driven pulleys 12 drive the brush head to rotate around its own axis.

[0046] The rotating drum drives the collar 5 to revolve via a one-way bearing. The collar 5 then drives the slider 6 and the cleaning brush 8 to revolve around the molybdenum wire. In this way, the cleaning brush 8 rotates on its own axis while revolving around the wire, and the contact point between the bristles and the wire surface changes continuously, reducing the localized excessive wear or uneven cleaning caused by the bristles always rubbing the wire at the same angle.

[0047] Because the elastic belt 13 is elastic, when the slider 6 moves radially due to brush wear, the belt can automatically extend or contract to compensate for changes in the center distance, without the need for an additional tensioning mechanism. The wear resistance and elasticity of the polyurethane material ensure long-term operational reliability, and the cooperation between the semi-circular groove and the circular belt creates a self-centering effect, preventing the belt from slipping off or running off-center.

[0048] Downstream of the cleaning component, that is, after the molybdenum wire leaves the cleaning brush 8 and before it enters the take-up roller 4, a wet cleaning component is also provided.

[0049] Reference Figure 3 The wet cleaning assembly includes a reservoir 14 for storing cleaning fluid, a drip nozzle 15 communicating with the reservoir 14, and a cleaning and wiping unit located downstream of the drip nozzle 15. The reservoir 14 is made of transparent plastic for easy observation of the fluid level, and has a filling port at the top and a dispensing port at the bottom. The dispensing port is connected to the drip nozzle 15 via a hose, and the drip nozzle 15 is aligned above the molybdenum wire.

[0050] Reference Figure 1 and Figure 3 The cleaning and wiping unit includes a drive roller, a driven roller, and an annular cleaning cloth 16 sleeved on the surfaces of the drive roller and the driven roller. The drive roller and the driven roller are respectively mounted on the equipment body 1 via bearing seats. The drive roller is driven to rotate by a small motor, and the driven roller rotates with the movement of the cleaning cloth 16.

[0051] Reference Figure 3 The cleaning cloth 16 operates in a direction perpendicular to the winding direction of the molybdenum wire. A pressing unit is provided above the cleaning cloth 16 to press the cleaning cloth 16 onto the surface of the molybdenum wire.

[0052] Reference Figure 1 and Figure 3 The pressing unit includes a fixed seat 17 and a wiping block 18. The fixed seat 17 is mounted on the equipment body 1 by bolts. The wiping block 18 is buoyantly mounted on the fixed seat 17 by a compression spring. The upper end of the compression spring abuts against the fixed seat 17 and the lower end abuts against the upper surface of the wiping block 18, so that the wiping block 18 always has a downward tendency.

[0053] Reference Figure 3 The lower surface of the wiping block 18 is arc-shaped and covered with a layer of wear-resistant polytetrafluoroethylene film. The wiping block 18 is located directly above the cleaning cloth 16 and the molybdenum wire, and its height is preset so that when the cleaning cloth 16 passes under the wiping block 18, the wiping block 18 presses the cleaning cloth 16 tightly against the surface of the molybdenum wire under the action of spring force.

[0054] During operation, the molybdenum wire first passes under the drip nozzle 15, where the cleaning solution is dripped onto the wire surface to dissolve or soften any stubborn residue. Then, the wire enters the cleaning and wiping unit, where the active roller drives the cleaning cloth 16 to move slowly. Under the action of the wiping block 18, the cleaning cloth 16 adheres tightly to the wire surface, wiping away the dissolved dirt.

[0055] The cleaning cloth 16 moves perpendicular to the direction of the filament's movement, allowing different areas of the cleaning cloth 16 to sequentially contact the filament. The portions soaked in the cleaning solution are exposed to air and air-dried naturally after leaving the contact area, thus achieving the recycling of dry and wet areas and eliminating the need for frequent replacement of the cleaning cloth 16. Through this wet cleaning assembly, the surface cleanliness of the molybdenum wire is significantly improved, reducing the risk of dents or scratches caused by residue pressing into the filament surface during subsequent winding.

[0056] The implementation principle of the continuous tungsten and molybdenum wire drawing device of this application is as follows: The molybdenum wire enters the cleaning assembly. The motor of the cleaning assembly drives the drum to rotate, and the drum drives the driven pulley 12 to rotate via the elastic belt 13, while simultaneously driving the collar 5 to revolve. This causes the cleaning brush 8 to sweep away the adhering substances on the surface of the wire through the dual motion of revolution and rotation. The cooperation between the compression spring and the centrifugal counterweight 7 ensures that the contact pressure between the bristles and the wire is dynamically constant and automatically compensates when the bristles wear. Subsequently, the molybdenum wire enters the wet cleaning assembly, and the drip nozzle 15 drips cleaning solution onto the surface of the wire. The cleaning cloth 16 wipes away the dissolved dirt under the action of the pressing unit. Finally, the molybdenum wire is wound up by the take-up roller 4. Throughout the process, the operator can observe the wear condition of the cleaning brush 8 through the wear indicator structure and replace the brush head in a timely manner.

[0057] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other, and any combination of features in different embodiments is also within the protection scope of this application. That is to say, the multiple embodiments described above can also be arbitrarily combined according to actual needs.

[0058] It should be noted that all the above-mentioned figures are exemplary illustrations of this application and do not represent the actual size of the product. Furthermore, the dimensional proportions between the components in the figures are not intended to limit the actual product of this application. The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A continuous tungsten wire and molybdenum wire drawing device, comprising a device body (1), a drawing assembly (2) mounted on the device body (1), an auxiliary assembly (3) for assisting in the winding of molybdenum wire, and a winding roller (4) for winding molybdenum wire, wherein a rotatable drum is provided on the device body (1), characterized in that: It also includes, A collar (5) is fixedly installed on the rotating drum; Multiple sliders (6) are arranged circumferentially along the collar (5), and each slider (6) is mounted on the collar (5) in a radial reciprocating manner. A spring is provided between the slider (6) and the collar (5), the spring applying a thrust toward the center of the collar (5) to the slider (6); The centrifugal counterweight (7) fixed on the slider (6) generates a centrifugal force that causes the slider (6) to move away from the center when the collar (5) rotates. A cleaning brush (8) is installed on the side of the slider (6) for contacting and cleaning the surface of the molybdenum wire; The thrust of the spring and the centrifugal force of the centrifugal counterweight (7) work together to make the cleaning brush (8) adhere to the surface of the molybdenum wire with a basically constant pressure, and automatically move towards the center to compensate after the cleaning brush (8) wears out.

2. The continuous tungsten wire and molybdenum wire drawing device as described in claim 1, characterized in that: The inner ring of the collar (5) is provided with multiple radially extending slide rails (9), and each slider (6) is slidably fitted in the corresponding slide rail (9). The spring is installed between the bottom of the slide rail (9) and the slider (6). The centrifugal counterweight (7) is fixed at one end of the slider (6) near the center of the collar (5).

3. The continuous tungsten wire and molybdenum wire drawing device as described in claim 1, characterized in that: The slider (6) is also provided with a wear indicator structure, which includes a scale line (10) on the side of the slide rail (9) and a transparent observation window at the corresponding position on the slide rail (9). When the slider (6) moves to the limit position due to wear of the cleaning brush (8), the slider (6) aligns with the scale line (10).

4. The continuous tungsten wire and molybdenum wire drawing device as described in claim 1, characterized in that: It also includes a transmission mechanism for driving the cleaning brush (8) to rotate. The transmission mechanism includes a second sleeve (11) connected to the rotating drum via a one-way bearing, driven pulleys (12) fixed on each cleaning brush (8), and annular elastic belts (13) in number matching the number of cleaning brushes (8). The surface of the second sleeve (11) is provided with grooves in number matching the number of driven pulleys (12). Each elastic belt (13) is respectively sleeved on an annular groove of the second sleeve (11) and a corresponding driven pulley (12). When the collar (5) revolves, the driven pulley (12) rotates around its own axis under the drive of the elastic belt (13), thereby causing the cleaning brush (8) to rotate.

5. The continuous tungsten wire and molybdenum wire drawing device as described in claim 4, characterized in that: The elastic belt (13) is a circular rubber belt made of polyurethane. The annular groove on the central fixed cylinder and the annular groove on the driven pulley (12) are both semi-circular cross sections. The elastic belt (13) is fitted in the corresponding annular groove and is in a stretched state. It maintains the friction between the elastic belt (13) and the central fixed cylinder and the driven pulley (12) by the contraction force of the elastic belt (13) itself.

6. The continuous tungsten wire and molybdenum wire drawing device as described in claim 1, characterized in that: Downstream of the cleaning assembly, there is a liquid storage tank (14) for storing cleaning fluid, a drip nozzle (15) connected to the liquid storage tank (14), and a cleaning and wiping unit disposed downstream of the drip nozzle (15). The drip nozzle (15) is aligned above the cleaning cloth (16). The cleaning and wiping unit includes an active roller, a driven roller, and a cleaning cloth (16) sleeved on the surfaces of the active roller and the driven roller. Above the cleaning cloth (16), there is a pressing unit for pressing the cleaning cloth (16) onto the surface of the molybdenum wire.

7. A continuous tungsten wire / molybdenum wire drawing device as described in claim 6, characterized in that: The pressing unit includes a fixed base (17) and a wiping block (18) detachably connected to the fixed base (17). The wiping block (18) is located directly above the cleaning cloth (16) and the molybdenum wire. The height of the wiping block (18) is preset such that when the cleaning cloth (16) passes the wiping block (18), the cleaning cloth (16) is pressed onto the surface of the molybdenum wire.

8. The continuous tungsten wire and molybdenum wire drawing device as described in claim 7, characterized in that: The wiping block (18) is buoyantly mounted on the fixed base (17) by a spring. The lower surface of the wiping block (18) is arc-shaped and covered with a wear-resistant polytetrafluoroethylene film. When the cleaning cloth (16) passes around the wiping block (18), the spring presses the wiping block (18) downward, so that the cleaning cloth (16) always adheres to the surface of the molybdenum wire.

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