Nickel-titanium alloy wire drawing machine

Abstract

The nickel-titanium alloy wire drawing machine comprises a wire drawing machine body, a thinning part, a transition part and a collecting part, a first working cavity, a second working cavity and a third working cavity are formed in the wire drawing machine body, and the second working cavity is communicated with the third working cavity; the thinning component is installed in the first working cavity, the thinning component comprises a first thinning assembly and a second thinning assembly, the thinning component is suitable for thinning the nickel-titanium alloy entering the first working cavity, and the first working cavity is provided with a thinning outlet; the transition part comprises a first transition wheel and a second transition wheel, and the first transition wheel is rotationally mounted on the wire drawing machine body through a mounting shaft, so that the problems of wire breakage and surface damage caused by high temperature generated when a nickel-titanium alloy material is processed by traditional wire drawing equipment can be effectively solved; therefore, the processing quality and the production efficiency of the nickel-titanium alloy wire are improved.

Description

Technical Field

[0001] This utility model relates to a nickel-titanium alloy wire drawing machine, belonging to the technical field of alloy processing equipment. Background Technology

[0002] Currently, nickel-titanium alloys are widely used in medical devices, aerospace, and precision instruments due to their excellent shape memory effect and superelasticity. However, nickel-titanium alloys are difficult to process, especially during wire drawing. Due to the material's high strength and hardness, conventional wire drawing equipment struggles to meet processing requirements, easily causing wire breakage or surface damage. A search revealed Chinese patent CN219359041U, which discloses a wire drawing device for aluminum alloy surfaces. In this patent, the aluminum plate to be drawn is fixed above a placement frame, which is then placed above a conveying structure. Simultaneously, sliding plates on both sides of the placement frame are inserted into limiting grooves to ensure a stable connection between the aluminum plate and the placement frame. The conveying structure is then activated, slowly feeding the placement frame into the wire drawing box. Simultaneously, a hydraulic cylinder is activated, causing the fixed seat to move downwards, which in turn moves the buffer plate downwards, cleaning the upper part of the aluminum plate. Once the aluminum plate is cleaned, the wire drawing structure is activated to begin the drawing process. However, this patent does not cool the alloy wire during the drawing process, which can easily lead to problems with the quality of the drawn alloy wire. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a nickel-titanium alloy wire drawing machine, which can effectively solve the problem of wire breakage and surface damage caused by the high temperature generated when processing nickel-titanium alloy materials by traditional wire drawing equipment, thereby improving the processing quality and production efficiency of nickel-titanium alloy wire.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a nickel-titanium alloy wire drawing machine, comprising:

[0005] A wire drawing machine body, wherein the wire drawing machine body is provided with a first working chamber, a second working chamber and a third working chamber, and the second working chamber is connected to the third working chamber;

[0006] A straightening component is installed in the first working chamber. The straightening component includes a first straightening assembly and a second straightening assembly. The straightening component is adapted to straighten the nickel-titanium alloy entering the first working chamber. The first working chamber is provided with a straightening outlet.

[0007] The transition component includes a first transition wheel and a second transition wheel. The first transition wheel is rotatably mounted on the wire drawing machine body via a mounting shaft, and the second transition wheel is sleeved on the mounting shaft via a first mounting plate and a connecting sleeve.

[0008] A collecting component, the collecting component including a collecting roller, the collecting roller being rotatably mounted on the wire drawing machine body;

[0009] The nickel-titanium alloy wire, which has been thinned by the thinning component, passes through the thinning outlet, is guided by the first transition wheel and the second transition wheel, and is then wound and collected by the collecting roller.

[0010] Furthermore, in order to improve the straightening process, the first straightening component includes a first fixed roller and a first movable roller. The first fixed roller is rotatably installed in the first working cavity through a first connecting roller, and the first movable roller is movably installed on the drawing machine body. The first fixed roller is provided with a first straightening groove, and the first movable roller is provided with a second straightening groove. When the first movable roller is adapted to move into position, the first straightening groove and the second straightening groove together form a first straightening cavity.

[0011] The second straightening assembly includes a second fixed roller and a second movable roller. The second fixed roller is rotatably mounted in the first working cavity via a second connecting roller. The second movable roller is movably mounted on the drawing machine body. The second fixed roller is provided with a third straightening groove, and the second movable roller is provided with a fourth straightening groove. When the second movable roller is adapted to move into position, the third straightening groove and the fourth straightening groove together form a second straightening cavity.

[0012] Furthermore, in order to improve production efficiency, the straightening component also includes a first driving device, which includes a first driving motor, a first driving wheel, a first driven wheel, a first synchronous belt and a second synchronous belt. The first driving motor is mounted on the wire drawing machine body, and a first driving wheel and a second driving wheel are provided on the movable end of the first driving motor. The first driving wheel and the second driving wheel are coaxially arranged.

[0013] The first driving wheel is coaxially arranged with the first connecting roller, the first driven wheel is coaxially arranged with the second connecting roller, the first synchronous belt is adapted to connect the first driving wheel and the first driving wheel, and the second synchronous belt is adapted to connect the second driving wheel and the first driven wheel.

[0014] Furthermore, to reduce the risk of material damage, the diameter of the third fine-tuning groove is smaller than the diameter of the first fine-tuning groove;

[0015] The diameter of the fourth fine-tuning groove is smaller than the diameter of the second fine-tuning groove.

[0016] Furthermore, to avoid the influence of frictional heat generated during the straightening process on the alloy wire, a nickel-titanium alloy wire drawing machine also includes a water injection component. The water injection component includes a water storage tank, a water injection pump, and a connecting pipe. The water storage tank is installed in the third working chamber, and the water injection pump is installed in the third working chamber. The water storage tank is suitable for storing cooling medium. The inlet of the water injection pump is connected to the water storage tank. The connecting pipe is located in the second working chamber, and the outlet of the water injection pump is connected to the first working chamber through the connecting pipe.

[0017] Furthermore, in order to improve the efficiency of the introduction, a nickel-titanium alloy wire drawing machine also includes an auxiliary introduction component. The auxiliary introduction component includes an introduction bracket and an introduction wheel. The introduction bracket is installed on the wire drawing machine body. The introduction bracket has a bracket cavity, a bracket inlet and a bracket outlet. The bracket inlet and the bracket outlet are both connected to the bracket cavity. The introduction wheel is installed in the bracket cavity. The bracket outlet is connected to the first working cavity.

[0018] Furthermore, a nickel-titanium alloy wire drawing machine also includes a second drive device, which includes a second drive motor, a second drive wheel, a second driven wheel, a second synchronous belt, and a third synchronous belt. The second drive motor is installed in the second working chamber, the second drive wheel is coaxially arranged with the mounting shaft, and the second driven wheel is coaxially arranged with the collecting roller.

[0019] The second synchronous belt is adapted to connect the movable end of the second drive motor to the second drive pulley;

[0020] The third synchronous belt is adapted to connect the second driving pulley and the second driven pulley.

[0021] Furthermore, in order to improve the quality of the alloy wire, the transition component also includes a tensioning polishing wheel, which is hinged to the first mounting plate via a second mounting plate. The tensioning polishing wheel is provided with a polishing groove, and the polishing groove is provided with a polishing rough surface. The tensioning polishing wheel is adapted to provide tension force and polish the surface of the nickel-titanium alloy wire when it passes through the polishing groove.

[0022] After adopting the above technical solution, this utility model has the following beneficial effects:

[0023] In this invention, nickel-titanium alloy raw materials (usually coarse wires or rods) enter the equipment through an auxiliary inlet component. The wires enter the support cavity from the support inlet, are guided by the inlet wheel, and are stably fed into the first working cavity from the support outlet. The wires enter the first straightening cavity, and the first drive motor starts, driving the first connecting roller and the first fixed roller to rotate synchronously with the second connecting roller and the second fixed roller. The rotating first fixed roller and the first movable roller jointly apply pressure to the nickel-titanium alloy raw materials, performing the first reduction in diameter and plastic deformation of the nickel-titanium alloy raw materials.

[0024] The wire that has completed the first stage of diameter reduction immediately enters the second straightening chamber. Since the diameters of the third and fourth straightening grooves are smaller than the diameter of the first straightening chamber, the nickel-titanium alloy raw material undergoes a second diameter reduction to achieve the target size. During the entire straightening process, the water pump installed in the third working chamber starts to work. The cooling medium is pumped out from the water storage tank and transported to the first working chamber through the connecting pipeline. The cooling medium directly sprays or wets the wire and rollers flowing through the straightening chamber, quickly absorbing and carrying away the frictional heat generated by the straightening deformation, preventing the nickel-titanium alloy from undergoing phase transformation embrittlement due to excessive temperature.

[0025] After the wire has been straightened and cooled, it leaves the first working chamber from the straightening outlet. The wire first winds around the first transition wheel, and then winds around the second transition wheel. The two transition wheels change the direction of the wire. After the wire leaves the second transition wheel, it enters the polishing groove of the tension polishing wheel. The rough polishing surface in the groove continuously rubs the surface of the wire to remove burrs, scratches or oxides generated during straightening, and significantly improves the surface finish.

[0026] The second drive motor installed in the second working chamber starts, driving the mounting shaft and the first and second transition wheels on it to rotate. At the same time, the rotating collecting rollers flatten and tightly wind and collect the finished nickel-titanium alloy wire. Attached Figure Description

[0027] Figure 1 This utility model relates to a three-dimensional nickel-titanium alloy wire drawing machine. Figure 1 ;

[0028] Figure 2 This utility model relates to a three-dimensional nickel-titanium alloy wire drawing machine. Figure 2 ;

[0029] Figure 3 This is a front view of a nickel-titanium alloy wire drawing machine according to this utility model;

[0030] Figure 4 This is a rear view of a nickel-titanium alloy wire drawing machine according to the present invention;

[0031] Figure 5 This is a left view of a nickel-titanium alloy wire drawing machine according to the present invention;

[0032] Figure 6 This is a top view of a nickel-titanium alloy wire drawing machine according to the present invention;

[0033] Figure 7 This is a schematic diagram of the internal structure of the first working cavity of this utility model. Detailed Implementation

[0034] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0035] like Figure 1-7 As shown, a nickel-titanium alloy wire drawing machine includes:

[0036] The wire drawing machine body 1 has a first working chamber 11, a second working chamber 12 and a third working chamber 13, and the second working chamber 12 and the third working chamber 13 are connected.

[0037] A straightening component is installed in the first working chamber 11. The straightening component includes a first straightening assembly and a second straightening assembly. The straightening component is adapted to straighten the nickel-titanium alloy entering the first working chamber 11. The first working chamber 11 is provided with a straightening outlet 111.

[0038] The transition component includes a first transition wheel 31 and a second transition wheel 32. The first transition wheel 31 is rotatably mounted on the wire drawing machine body 1 via a mounting shaft 33, and the second transition wheel 32 is sleeved on the mounting shaft 33 via a first mounting plate 34 and a connecting sleeve 37.

[0039] The collecting component includes a collecting roller 41, which is rotatably mounted on the drawing machine body 1;

[0040] The nickel-titanium alloy wire, which has been thinned by the thinning component, passes through the thinning outlet 111 and is guided by the first transition wheel 31 and the second transition wheel 32, so that it is wound and collected by the collecting roller 41.

[0041] Specifically, such as Figure 7 As shown, the first straightening assembly includes a first fixed roller 21 and a first movable roller 22. The first fixed roller 21 is rotatably mounted in the first working chamber 11 via a first connecting roller 54. The first movable roller 22 is movably mounted on the drawing machine body 1. The first fixed roller 21 is provided with a first straightening groove, and the first movable roller 22 is provided with a second straightening groove. When the first movable roller 22 is adapted to move into position, the first straightening groove and the second straightening groove together form a first straightening cavity 23.

[0042] The second straightening assembly includes a second fixed roller 24 and a second movable roller 25. The second fixed roller 24 is rotatably mounted in the first working chamber 11 via a second connecting roller 55. The second movable roller 25 is movably mounted on the drawing machine body 1. The second fixed roller 24 is provided with a third straightening groove, and the second movable roller 25 is provided with a fourth straightening groove. When the second movable roller 25 is adapted to move into position, the third straightening groove and the fourth straightening groove together form a second straightening cavity 26.

[0043] Specifically, such as Figure 1-6 As shown, the straightening component also includes a first driving device, which includes a first driving motor 51, a first driving wheel 52, a first driven wheel 53, a first synchronous belt and a second synchronous belt. The first driving motor 51 is mounted on the wire drawing machine body 1. The movable end of the first driving motor 51 is provided with a first driving wheel 511 and a second driving wheel 512. The first driving wheel 511 and the second driving wheel 512 are coaxially arranged.

[0044] The first driving wheel 52 is coaxially arranged with the first connecting roller 54, the first driven wheel 53 is coaxially arranged with the second connecting roller 55, the first synchronous belt is adapted to connect the first driving wheel 511 and the first driving wheel 52, and the second synchronous belt is adapted to connect the second driving wheel 512 and the first driven wheel 53.

[0045] Specifically, the diameter of the third fine-tuning groove is smaller than the diameter of the first fine-tuning groove;

[0046] The diameter of the fourth fine-tuning groove is smaller than that of the second fine-tuning groove.

[0047] In this embodiment, the second straightening cavity 26 is smaller than the first straightening cavity 23, thereby realizing multi-stage progressive straightening of the nickel-titanium alloy wire. By gradually reducing the diameter, the material maintains a uniform grain structure during the cold work hardening process, while avoiding wire breakage caused by large deformation.

[0048] Specifically, such as Figure 1-3 As shown, a nickel-titanium alloy wire drawing machine also includes a water injection component, which includes a water storage tank 61, a water injection pump 62, and a connecting pipe. The water storage tank 61 is installed in the third working chamber 13, and the water injection pump 62 is installed in the third working chamber 13. The water storage tank 61 is suitable for storing cooling medium. The inlet of the water injection pump 62 is connected to the water storage tank 61. The connecting pipe is set in the second working chamber 12, and the outlet of the water injection pump 62 is connected to the first working chamber 11 through the connecting pipe.

[0049] Specifically, such as Figure 1-6As shown, a nickel-titanium alloy wire drawing machine also includes an auxiliary guide assembly, which includes a guide bracket 71 and a guide wheel 72. The guide bracket 71 is installed on the wire drawing machine body 1. The guide bracket 71 has a bracket cavity 711, a bracket inlet 712 and a bracket outlet. The bracket inlet 712 and the bracket outlet are both connected to the bracket cavity 711. The guide wheel 72 is installed in the bracket cavity 711 and the bracket outlet is connected to the first working chamber 11.

[0050] Specifically, such as Figure 1-4 As shown, a nickel-titanium alloy wire drawing machine also includes a second drive device, which includes a second drive motor 81, a second drive wheel 82, a second driven wheel 83, a second synchronous belt and a third synchronous belt. The second drive motor 81 is installed in the second working chamber 12, the second drive wheel 82 is coaxially arranged with the mounting shaft 33, and the second driven wheel 83 is coaxially arranged with the collecting roller 41.

[0051] The second synchronous belt is suitable for connecting the movable end of the second drive motor 81 and the second drive wheel 82;

[0052] The third synchronous belt is suitable for connecting the second driving pulley 82 and the second driven pulley 83.

[0053] Specifically, such as Figure 1-6 As shown, the transition component also includes a tensioning polishing wheel 35, which is hinged to the first mounting plate 34 via the second mounting plate 36. The tensioning polishing wheel 35 is provided with a polishing groove 351, which has a rough polishing surface. The tensioning polishing wheel 35 is adapted to provide tension and polish the surface of the nickel-titanium alloy wire as it passes through the polishing groove 351.

[0054] In this embodiment, a first adjustment component and a second adjustment component are also included. The first adjustment component includes a first adjustment bracket 91 and a first adjustment motor 92. The second adjustment component includes a second adjustment bracket 93 and a second adjustment motor 94. Both the first adjustment bracket 91 and the second adjustment bracket 93 are mounted on the wire drawing machine body 1. The first adjustment motor 92 is mounted on the first adjustment bracket 91, and the second adjustment motor 94 is mounted on the second adjustment bracket 93. The movable end of the first adjustment motor 92 is connected to the first movable roller 22, and the movable end of the second adjustment motor 94 is connected to the second movable roller 25. The first adjustment motor 92 and the second adjustment motor 94 are adapted to adjust the positions of the first movable roller 22 and the second movable roller 25 respectively to adjust the first straightening cavity 23 and the second straightening cavity 26.

[0055] In this embodiment, the nickel-titanium alloy raw material (usually coarse wire or rod) enters the equipment through an auxiliary guide assembly. The wire enters the support cavity 711 from the support inlet 712, and after being guided by the guide wheel 72, it is stably fed into the first working cavity 11 from the support outlet. The wire enters the first straightening cavity 23. The first drive motor 51 starts, driving the first connecting roller 54 and the first fixed roller 21 to rotate synchronously with the second connecting roller 55 and the second fixed roller 24. The rotating first fixed roller 21 and the first movable roller 22 jointly apply pressure to the nickel-titanium alloy raw material, performing the first diameter reduction and plastic deformation of the nickel-titanium alloy raw material.

[0056] The wire that has completed the first stage of diameter reduction immediately enters the second straightening chamber 26. Since the diameters of the third and fourth straightening grooves are smaller than the diameter of the first stage straightening chamber, the nickel-titanium alloy raw material is subjected to a second diameter reduction to achieve the target size. During the entire straightening process, the water pump 62 installed in the third working chamber 13 starts to work. The cooling medium is pumped out from the water storage tank 61 and transported to the first working chamber 11 through the connecting pipeline. The cooling medium is directly sprayed or wetted into the wire and rollers flowing through the straightening chamber, quickly absorbing and carrying away the frictional heat generated by the straightening deformation, preventing the nickel-titanium alloy from undergoing phase transformation embrittlement due to excessive temperature.

[0057] After the wire has been straightened and cooled, it leaves the first working chamber 11 from the straightening outlet 111. The wire first winds around the first transition wheel 31, and then winds around the second transition wheel 32. The two transition wheels change the direction of the wire. After the wire leaves the second transition wheel 32, it enters the polishing groove 351 of the tension polishing wheel 35. The rough polishing surface in the groove continuously rubs the surface of the wire to remove burrs, scratches or oxides generated during straightening, and significantly improves the surface finish.

[0058] The second drive motor 81 installed in the second working chamber 12 starts, driving the mounting shaft 33 and the first transition wheel 31 and the second transition wheel 32 on it to rotate. At the same time, the rotating collecting roller 41 smoothly and tightly winds and collects the finished nickel-titanium alloy wire.

[0059] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A nickel-titanium alloy wire drawing machine, characterized in that, include: A wire drawing machine body (1) is provided with a first working chamber (11), a second working chamber (12) and a third working chamber (13), wherein the second working chamber (12) and the third working chamber (13) are connected; A straightening component is installed in the first working chamber (11). The straightening component includes a first straightening assembly and a second straightening assembly. The straightening component is adapted to straighten the nickel-titanium alloy entering the first working chamber (11). The first working chamber (11) is provided with a straightening outlet (111). The transition component includes a first transition wheel (31) and a second transition wheel (32). The first transition wheel (31) is rotatably mounted on the wire drawing machine body (1) via a mounting shaft (33). The second transition wheel (32) is sleeved on the mounting shaft (33) via a first mounting plate (34) and a connecting sleeve (37). A collecting component, the collecting component including a collecting roller (41), the collecting roller (41) being rotatably mounted on the drawing machine body (1). The nickel-titanium alloy wire, which has been thinned by the thinning component, passes through the thinning outlet (111), is guided by the first transition wheel (31) and the second transition wheel (32), and is then wound and collected by the collecting roller (41).

2. The nickel-titanium alloy wire drawing machine according to claim 1, characterized in that: The first straightening assembly includes a first fixed roller (21) and a first movable roller (22). The first fixed roller (21) is rotatably mounted in the first working chamber (11) via a first connecting roller (54). The first movable roller (22) is movably mounted on the wire drawing machine body (1). The first fixed roller (21) is provided with a first straightening groove, and the first movable roller (22) is provided with a second straightening groove. When the first movable roller (22) is adapted to move into position, the first straightening groove and the second straightening groove together form a first straightening cavity (23). The second straightening assembly includes a second fixed roller (24) and a second movable roller (25). The second fixed roller (24) is rotatably mounted in the first working chamber (11) via a second connecting roller (55). The second movable roller (25) is movably mounted on the wire drawing machine body (1). The second fixed roller (24) is provided with a third straightening groove, and the second movable roller (25) is provided with a fourth straightening groove. After the second movable roller (25) is adapted to move into position, the third straightening groove and the fourth straightening groove together form a second straightening cavity (26).

3. The nickel-titanium alloy wire drawing machine according to claim 2, characterized in that: The straightening component also includes a first driving device, which includes a first driving motor (51), a first driving wheel (52), a first driven wheel (53), a first synchronous belt and a second synchronous belt. The first driving motor (51) is mounted on the wire drawing machine body (1). The movable end of the first driving motor (51) is provided with a first driving wheel (511) and a second driving wheel (512). The first driving wheel (511) and the second driving wheel (512) are coaxially arranged. The first driving wheel (52) is coaxially arranged with the first connecting roller (54), the first driven wheel (53) is coaxially arranged with the second connecting roller (55), the first synchronous belt is adapted to connect the first driving wheel (511) and the first driving wheel (52), and the second synchronous belt is adapted to connect the second driving wheel (512) and the first driven wheel (53).

4. A nickel-titanium alloy wire drawing machine according to claim 2, characterized in that: The diameter of the third fine-tuning groove is smaller than the diameter of the first fine-tuning groove; The diameter of the fourth fine-tuning groove is smaller than the diameter of the second fine-tuning groove.

5. A nickel-titanium alloy wire drawing machine according to claim 1, characterized in that: It also includes a water injection component, which includes a water storage tank (61), a water injection pump (62), and a connecting pipeline. The water storage tank (61) is installed in the third working chamber (13), and the water injection pump (62) is installed in the third working chamber (13). The water storage tank (61) is suitable for storing cooling medium. The inlet of the water injection pump (62) is connected to the water storage tank (61). The connecting pipeline is set in the second working chamber (12), and the outlet of the water injection pump (62) is connected to the first working chamber (11) through the connecting pipeline.

6. A nickel-titanium alloy wire drawing machine according to claim 1, characterized in that: It also includes an auxiliary import component, which includes an import bracket (71) and an import wheel (72). The import bracket (71) is installed on the wire drawing machine body (1). The import bracket (71) has a bracket cavity (711), a bracket inlet (712) and a bracket outlet. The bracket inlet (712) and the bracket outlet are both connected to the bracket cavity (711). The import wheel (72) is installed in the bracket cavity (711). The bracket outlet is connected to the first working cavity (11).

7. A nickel-titanium alloy wire drawing machine according to claim 1, characterized in that: It also includes a second drive device, which includes a second drive motor (81), a second drive wheel (82), a second driven wheel (83), a third synchronous belt and a fourth synchronous belt. The second drive motor (81) is installed in the second working chamber (12). The second drive wheel (82) is coaxially arranged with the mounting shaft (33), and the second driven wheel (83) is coaxially arranged with the collecting roller (41). The third synchronous belt is adapted to connect the movable end of the second drive motor (81) to the second drive wheel (82). The fourth synchronous belt is adapted to connect the second driving pulley (82) and the second driven pulley (83).

8. A nickel-titanium alloy wire drawing machine according to claim 1, characterized in that: The transition component also includes a tension polishing wheel (35), which is hinged to the first mounting plate (34) via a second mounting plate (36). The tension polishing wheel (35) is provided with a polishing groove (351), which has a polishing rough surface. The tension polishing wheel (35) is adapted to provide tension and polish the surface of the nickel-titanium alloy wire as it passes through the polishing groove (351).

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