Rotary linear chain type wire drawing machine

Abstract

The utility model discloses a rotary linear chain type wire drawing machine and belongs to the technical field of metal drawing equipment. Comprising a wire drawing machine body and a chain type rotating machine, the wire drawing machine body comprises a lubricant groove, a natural gas heating furnace and a mold frame which are sequentially arranged, the lubricant groove is used for coating the surface of a tungsten filament with a lubricant, the natural gas heating furnace is used for heating the coated tungsten filament, and the mold frame is provided with a wire drawing mold used for stretching the tungsten filament; the chained rotating machine comprises a plurality of high-pressure air clamps, each high-pressure air clamp comprises a high-pressure air cylinder and a clamping part, the high-pressure air clamps are connected with a through pipe through an air pipe I, the through pipe is connected with a high-pressure air source through an air pipe II, and the high-pressure air cylinders and the clamping parts are used for clamping tungsten filaments and stretching the tungsten filaments. The device is simple in structure and convenient to use.

Description

Technical Field

[0001] This utility model belongs to the technical field of metal drawing equipment, and specifically relates to a rotary linear chain wire drawing machine. Background Technology

[0002] In the existing technology, two main methods are usually used in the production of coarse tungsten wire in the tungsten wire processing industry: large rotary wire drawing machine and chain linear drawing machine.

[0003] Large rotary wire drawing machines use a motor to drive a large-diameter rotary table to rotate at high speed. A traction mechanism along the edge of the table pulls the metal wire continuously through a set of dies to complete the drawing process. They are simple in structure and have low manufacturing costs, making them widely used in processing small to medium-sized wires. However, when processing thicker wires (over 3mm in diameter) or high-strength alloy wires, the inherent defects of large rotary wire drawing machines become increasingly apparent. Wire breakage is the most prominent issue and has become a key bottleneck restricting production efficiency and product yield.

[0004] Chain-type linear drawing machines work by heating lubricated tungsten wires and then stretching them along a linear track using clamps. Compared to large rotary drawing machines, this method solves the problem of wire breakage caused by wire winding, thus improving wire quality to some extent. However, chain-type linear drawing machines have a large footprint, and the production process is reciprocating. The position of the tungsten wire after passing through the die is unstable, which not only affects the uniformity and diameter accuracy of the wire but also limits production efficiency. To address these issues, this application provides a rotary linear chain-type wire drawing machine. Utility Model Content

[0005] To address the aforementioned technical problems, the technical solution adopted by this utility model is: a rotary linear chain wire drawing machine, the wire drawing machine comprising a wire drawing machine body and a chain rotary machine;

[0006] The drawing machine body includes a lubricant tank, a natural gas heater, and a die frame arranged in sequence. The lubricant tank is used to coat the surface of the tungsten wire with lubricant. The natural gas heater is used to heat the coated tungsten wire. The die frame is equipped with a drawing die for drawing the tungsten wire.

[0007] The chain rotary machine includes multiple high-pressure air clamps, each comprising a high-pressure cylinder and a clamping part. The multiple high-pressure air clamps are connected to a connecting pipe via an air pipe one, and the connecting pipe is connected to a high-pressure air source via an air pipe two. The high-pressure cylinder and clamping part are used to clamp tungsten wires and stretch them.

[0008] Furthermore, the high-pressure cylinder includes a cylinder body and a piston rod. The cylinder body is connected to one end of the air pipe, and a solenoid valve is provided at the connection between the cylinder body and the air pipe. The other end of the air pipe is connected to a connecting pipe.

[0009] Furthermore, the clamping part is equipped with a fixing plate, an upper clamp and a lower clamp. The upper clamp is fixedly connected to the piston rod and can be adjusted and moved in the vertical direction. The lower clamp is fixedly installed on the fixing plate and is located below the upper clamp. The upper clamp and the lower clamp move relative to each other through the drive of a high-pressure cylinder to facilitate clamping or releasing the tungsten wire.

[0010] Furthermore, the chain rotary machine also includes a base and a support. The base is located above the main body of the wire drawing machine, and the support is connected to the base through a first drive device. Multiple high-pressure air clamps are fixed on the support. When the support moves along the waist-shaped track on the base, the multiple high-pressure air clamps move together with the support.

[0011] Furthermore, the chain rotary machine also includes two symmetrically arranged arc-shaped support tubes, with a cross between the two arc-shaped support tubes. The arc-shaped support tubes are installed on the wire drawing machine body through the cross. The arc-shaped support tubes are arc-shaped and slide in conjunction with the through tube.

[0012] Furthermore, the wire drawing machine also includes a vertical take-up reel, which is used to collect the drawn tungsten wire.

[0013] The advantages of this utility model compared with the prior art are: (1) This application adopts a chain rotary machine design and sets up multiple high-pressure air clamps that can be controlled individually to continuously and stably stretch the tungsten wire, which effectively improves the stretching efficiency. (2) In this application, multiple wire drawing machine bodies and chain rotary machines can be flexibly matched according to actual production needs, which greatly improves the tungsten wire production capacity. In particular, the entire equipment can adopt a linear layout, arranging the wire drawing machine body, chain rotary machine and take-up reel in sequence, which effectively reduces the floor space and can also concentrate the production line together to improve production efficiency. (3) In this application, the tungsten wire to be processed remains in a straight state from the stretching through the die to the winding, without being subjected to any bending or deformation, avoiding the defects of the large rotary wire drawing machine that easily causes the tungsten wire to be twisted and broken when winding. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the main structure of a wire drawing machine.

[0016] Figure 3 This is a schematic diagram of a chain rotary machine.

[0017] Figure 4 Schematic diagram of part of the chain rotary machine Figure 1 .

[0018] Figure 5 Schematic diagram of part of the chain rotary machine Figure 2 .

[0019] Reference numerals: 1-Wire drawing machine body; 11-Lubricant tank; 12-Natural gas heater; 13-Die frame; 2-Chain rotary machine; 21-Base; 22-High-pressure air clamp; 221-High-pressure cylinder; 222-Clamping part; 223-Upper chuck; 224-Lower chuck; 225-Cylinder body; 226-Piston rod; 227-Air pipe one; 23-Bracket; 24-Arc-shaped support pipe; 25-Pass pipe; 26-Air pipe two; 27-Cross; 3-Vertical take-up reel; 4-Tungsten wire. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model belong to the present utility model.

[0021] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0022] Example: Figures 1-5 The diagram shows a rotary linear chain wire drawing machine, which includes a wire drawing machine body 1 and a chain rotary machine 2;

[0023] The main body 1 of the wire drawing machine includes a lubricant tank 11, a natural gas heater 12, and a die frame 13 arranged in sequence. During the production process, the tungsten wire 4 passes through the lubricant tank 11, the natural gas heater 12, and the die frame 13 in sequence to ensure that the tungsten wire 4 obtains sufficient lubrication and suitable temperature conditions before stretching, thereby reducing friction and thermal damage during stretching and improving the surface quality and ductility of the tungsten wire 4.

[0024] The lubricant groove 11 is used to coat the surface of the tungsten wire 4 with lubricant. The purpose is to reduce the friction between the tungsten wire 4 and the die during the stretching process, prevent the tungsten wire 4 from breaking, and improve the stretching efficiency.

[0025] The natural gas heater 12 is used to heat the coated tungsten wire 4. The natural gas heater 12 heats the lubricated tungsten wire 4 to a certain temperature. This step allows the tungsten wire 4 to reach an ideal plastic state before stretching, which helps to improve the forming effect of the stretching process and prevent excessive work hardening of the wire. For example, the temperature can be 500℃, 550℃, 600℃, 800℃, etc., and the heating temperature provided by the natural gas heater 12 can be flexibly adjusted according to actual needs.

[0026] The mold frame 13 is equipped with a drawing die for drawing tungsten wire 4. The initial forming of tungsten wire 4 is carried out through the mold frame 13. This step is crucial to the diameter and shape accuracy of tungsten wire 4.

[0027] In addition, the wire drawing machine also includes a vertical take-up reel 3, which is installed behind the chain rotary machine 2. The vertical take-up reel 3 is used to collect the stretched tungsten wire 4. The vertical take-up reel 3 includes a cylindrical take-up reel and a second drive device. The cylindrical design allows the tungsten wire 4 to be evenly wound on the take-up reel, avoiding crossing and tangling during the winding process. A take-up opening is provided on the side of the take-up reel, the width of which is larger than the diameter of the tungsten wire 4, allowing the tungsten wire 4 to pass smoothly through and be wound on the outer circumference of the take-up reel body. The second drive device includes a drive motor and a reduction mechanism that is driven to rotate the take-up reel body to wind the tungsten wire 4. By using the drive motor and the reduction mechanism, the rotation speed of the take-up reel can be precisely controlled to ensure that the tungsten wire 4 is wound evenly at an appropriate speed, thereby avoiding excessive tension during the winding process, which would affect the quality of the tungsten wire 4.

[0028] In this embodiment, the wire drawing machine includes two wire drawing machine bodies 1 and two chain rotary machines 2. The tungsten wire 4 passes sequentially through the first wire drawing machine body 1, the first chain rotary machine 2, the second wire drawing machine body 1, and the second chain rotary machine 2 to achieve two-stage stretching of the tungsten wire 4. Finally, it is wound up by a vertical take-up reel 3. The tungsten wire 4 is first initially stretched in the first wire drawing machine body 1 to form its basic dimensions and improve the mechanical properties of the material. Then, it undergoes continuous linear stretching in the first chain rotary machine 2 to maintain the straightness of the tungsten wire 4 and reduce internal stress. Next, it undergoes further processing in the second wire drawing machine body 1, including dimensional reduction and precision drawing. Finally, it undergoes final stretching in the second chain rotary machine 2 to ensure high-precision dimensions and optimized physical properties. It should be noted that if one wire drawing machine body 1 and one chain rotary machine 2 can meet the usage requirements, both the wire drawing machine body 1 and the chain rotary machine 2 can be arranged as one unit.

[0029] The chain rotary machine 2 includes multiple high-pressure air clamps 22. Each high-pressure air clamp 22 includes a high-pressure cylinder 221 and a clamping part 222. The multiple high-pressure air clamps 22 are connected to a through pipe 25 via an air pipe 227. The through pipe 25 is connected to a high-pressure air source via an air pipe 26. The high-pressure cylinder 221 and the clamping part 222 are used to clamp the tungsten wire 4 and stretch the tungsten wire 4.

[0030] like Figure 3 , Figure 4 As shown, the high-pressure air clamp 22 includes a high-pressure cylinder 221 and a clamping part 222. The clamping part 222 clamps the tungsten wire 4 for linear stretching on the straight section adjacent to the die frame 13 on the waist-shaped track. The high-pressure cylinder 221 can achieve precise control of the clamping force during the wire drawing process, ensuring the uniformity and stability of the tungsten wire 4 during stretching and reducing the risk of wire breakage during the wire drawing process. Finally, the vertical take-up reel 3 is used to collect the stretched tungsten wire 4. This design allows for efficient take-up operations, ensuring that the stretched tungsten wire 4 can be arranged in an orderly manner, preventing the tungsten wire 4 from tangling and deforming due to stretching, thereby improving the quality of the final product.

[0031] The high-pressure cylinder 221 includes a cylinder body 225 and a piston rod 226. The cylinder body 225 is connected to one end of the air pipe 227, and a solenoid valve is provided at the connection between the cylinder body 225 and the air pipe 227. The other end of the air pipe 227 is connected to the through pipe 25.

[0032] like Figure 3 , Figure 4 As shown, each high-pressure cylinder 221 includes a cylinder body 225 and a piston rod 226. The cylinder body 225 is connected to an air pipe 227. High-pressure gas supplied by a high-pressure gas source drives the piston rod 226 to control the opening and closing of the clamping part 222. Utilizing the power of high-pressure gas to achieve rapid and accurate clamping action allows the clamping part 222 to quickly clamp or release the tungsten wire 4 when needed. This is crucial for improving the response speed and operational flexibility of the wire drawing machine. Furthermore, the design of the high-pressure cylinder 221 also ensures the stability and adjustability of the clamping force during the wire drawing process, further ensuring quality control of the tungsten wire 4 processing.

[0033] In this embodiment, when the high-pressure cylinder 221 that needs to hold the tungsten wire 4 rotates to a position where it can hold the tungsten wire 4, the solenoid valve set at the connection between the cylinder body 225 and the air pipe 227 of the high-pressure cylinder 221 will open. Then, the high-pressure gas in the pipe 25 will enter the cylinder body 225 through the air pipe 227, causing the piston rod 226 slidably set in the cylinder body 225 to drive the upper clamp 223 to move downward, thereby completing the clamping of the tungsten wire through the upper clamp 223 and the lower clamp 224.

[0034] The clamping part 222 is equipped with a fixed plate, an upper clamp 223 and a lower clamp 224. The upper clamp 223 is fixedly connected to the piston rod 226 and can be adjusted in the vertical direction. The lower clamp 224 is fixedly mounted on the fixed plate and is located below the upper clamp 223. The upper clamp 223 and the lower clamp 224 move relative to each other through the drive of the high-pressure cylinder 221, so as to clamp or release the tungsten wire 4.

[0035] like Figure 3 , Figure 4 As shown, the clamping part 222 of the high-pressure air clamp 22 is equipped with an upper clamp 223, a lower clamp 224, and a fixing plate. The upper clamp 223 is mounted on the lower side of the piston rod 226 and can be adjusted vertically. The lower clamp 224 is fixedly mounted on the fixing plate, and the lower clamp 224 and the upper clamp 223 move synchronously together along the waist-shaped track. The fixing plate is connected to the bracket 23. The combination of the fixedness of the lower clamp 224 and the dynamic adjustment of the upper clamp 223 allows the entire clamping mechanism to maintain stability during the stretching process of the tungsten wire 4 while adapting to the movement of the waist-shaped track. The upper clamp 223 and the lower clamp 224 move relative to each other through the drive of the high-pressure cylinder 221, so as to clamp or release the tungsten wire 4. The clamping force of the tungsten wire 4 is precisely controlled by pneumatic control, which can efficiently clamp the tungsten wire 4 for stretching and easily release it when necessary, improving the flexibility and efficiency of operation.

[0036] The chain rotary machine 2 also includes a base 21 and a support 23. The base 21 is set above the wire drawing machine body 1. The support 23 is connected to the base 21 through a first drive device, and multiple high-pressure air clamps 22 are fixed on the support 23. When the support 23 moves along the waist-shaped track on the base 21, the multiple high-pressure air clamps 22 move together with the support 23.

[0037] like Figure 3 , Figure 4 As shown, the high-pressure air clamp 22 is fixedly connected to a bracket 23. The bracket 23 is equipped with a drive device to move the high-pressure air clamp 22 along a waist-shaped track, ensuring that the high-pressure air clamp 22 can move smoothly along a specific path, thereby achieving uniform processing of the tungsten wire 4 throughout the entire stretching process. The use of the first drive device allows for precise control of the position and speed of the high-pressure air clamp 22, improving the accuracy and efficiency of the wire drawing process. Multiple high-pressure air clamps 22 are evenly distributed around the waist-shaped track, uniformly distributing the drawing force and preventing breakage or uneven quality of the tungsten wire 4 due to excessive local stress. The waist-shaped track design helps maintain the straightness of the stretching process, reducing material deformation and stress concentration. The waist-shaped track is a path composed of two straight segments and two semi-circular curved segments.

[0038] Alternatively, the first drive unit also includes a tension detection device and a controller. By detecting the tension of the tungsten wire 4 and controlling the speed of the drive motor and the reciprocating speed of the high-pressure air clamp 22, the winding tension of the tungsten wire 4 is maintained within a reasonable range. This setup enables real-time monitoring and automatic adjustment of the tension of the tungsten wire 4. By adjusting the matching of the winding speed and the drawing speed, the tension of the tungsten wire 4 is ensured to remain stable throughout the winding process. This is crucial for ensuring the dimensional accuracy and mechanical properties of the final tungsten wire 4 product.

[0039] The chain rotary machine 2 also includes two symmetrically arranged arc-shaped support tubes 24. A cross 27 is provided between the two arc-shaped support tubes 24. The arc-shaped support tubes 24 are installed on the wire drawing machine body 1 through the cross 27. The arc-shaped support tubes 24 are arc-shaped and can perfectly fit the through tube 25. They are tightly connected to the through tube 25 and the arc-shaped support tubes 24 and the through tube 25 slide together.

[0040] like Figure 5 As shown, the arc-shaped support tube 24 is connected to the cross 27. The cross 27 supports the arc-shaped support tube 24, which in turn supports and guides the through tube 25. The through tube 25 is connected to the cylinder body 225 via the first air pipe 227. When the cylinder body 225 moves, it moves the through tube 25 via the first air pipe 227. At this time, the arc-shaped support tube 24 supports and guides the through tube 25. The second air pipe 26 is connected to an external high-pressure air source. The high-pressure air source supplies gas to the through tube 25 through the second air pipe 26. It can also supply gas separately when the solenoid valve on a certain cylinder body 225 is open to clamp the tungsten wire. The second air pipe 26 is made of a flexible and elastic material. In order to allow the second air pipe 26 to rotate back and forth with the through tube 25, the high-pressure air source connected to the second air pipe 26 can be positioned above the second air pipe 26.

[0041] In summary, this invention proposes a rotary linear chain wire drawing machine. Utilizing high-pressure air clamps 22 and high-pressure cylinders 221 driving the upper and lower clamping heads, it not only achieves precise clamping and releasing of the tungsten wire 4, but also ensures the continuity and straightness of the wire drawing process through the design of the waist-shaped track. This effectively reduces the internal stress of the tungsten wire 4 caused by turning, thereby reducing the possibility of wire breakage and improving product reliability. Furthermore, this invention employs a double-stretching technology, combining two wire drawing machine bodies 1 and two chain-rotating machines 2, ensuring a smooth and seamless transition from initial stretching to fine stretching of the tungsten wire 4. This significantly improves stretching efficiency while ensuring the stability of the wire drawing process and the uniformity of the tungsten wire 4.

[0042] The above figures are merely illustrative of the processes included in the method according to exemplary embodiments of this application and are not intended to be limiting. It is readily understood that the processes shown in the above figures do not indicate or limit the temporal order of these processes. Furthermore, it is readily understood that these processes may be executed synchronously or asynchronously, for example, in multiple modules.

[0043] It should be understood that this application is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A rotary-straight linear chain type wire drawing machine characterized by, The wire drawing machine comprises a wire drawing machine body (1) and a chain type rotary machine (2); The wire drawing machine body (1) comprises a lubricant groove (11), a natural gas heating furnace (12) and a die holder (13) arranged in sequence, the lubricant groove (11) is used for coating lubricant on the surface of the tungsten wire (4), the natural gas heating furnace (12) is used for heating the tungsten wire (4) after coating, and the die holder (13) is provided with a wire drawing die for stretching the tungsten wire (4). The chain type rotary machine (2) comprises a plurality of high-pressure air clamps (22), the high-pressure air clamp (22) comprises a high-pressure air cylinder (221) and a clamping part (222), a plurality of the high-pressure air clamps (22) are connected with a through pipe (25) through a gas pipe (227), the through pipe (25) is connected with a high-pressure air source through a gas pipe (26), and the high-pressure air cylinder (221) and the clamping part (222) are used for clamping and stretching the tungsten wire (4).

2. A rotary-straight linear chain type wire drawing machine according to claim 1, wherein The high-pressure air cylinder (221) comprises a cylinder body (225) and a piston rod (226), the cylinder body (225) is connected with one end of the gas pipe (227), an electromagnetic valve is arranged at the connection position of the cylinder body (225) and the gas pipe (227), and the other end of the gas pipe (227) is communicated with the through pipe (25).

3. A rotary-straight linear chain type wire drawing machine according to claim 2, wherein The clamping part (222) is provided with a fixed plate, an upper clamp (223) and a lower clamp (224), the upper clamp (223) is fixedly connected with the piston rod (226) and can be adjusted in the vertical direction, the lower clamp (224) is fixedly installed on the fixed plate and is located below the upper clamp (223), and the upper clamp (223) and the lower clamp (224) are relatively moved through the driving of the high-pressure air cylinder (221) so as to clamp or release the tungsten wire (4).

4. A rotary-straight linear chain type wire drawing machine as claimed in claim 3, characterized in that, The chain type rotary machine (2) further comprises a base (21) and a support (23), the base (21) is arranged above the wire drawing machine body (1), the support (23) is connected with the base (21) through a first driving device, and a plurality of high-pressure air clamps (22) are fixed on the support (23), when the support (23) moves along the waist-shaped track on the base (21), the plurality of high-pressure air clamps (22) move together with the support (23).

5. A rotary-straight linear chain type wire drawing machine as claimed in claim 4, characterized in that, The chain type rotary machine (2) further comprises two symmetrically arranged arc-shaped support pipes (24), a cross frame (27) is arranged between the two arc-shaped support pipes (24), the arc-shaped support pipe (24) is installed on the wire drawing machine body (1) through the cross frame (27), the arc-shaped support pipe (24) is in an arc shape and is in sliding fit with the through pipe (25).

6. A rotary-straight linear chain wire drawing machine as claimed in any one of the claims 1-5, characterized in that, The wire drawing machine further comprises a vertical take-up reel (3), and the vertical take-up reel (3) is used for collecting the stretched tungsten wire (4).

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