An automatic elastic detection device for titanium wire

Abstract

The present invention provides an automatic elastic detection device for titanium wire materials, which relates to the technical field of elastic testing devices and includes an operating table. A first stretching rod and a second stretching rod are rotatably installed on the top surface of the operating table, and the first stretching rod and the second stretching rod are symmetrically arranged with respect to the operating table. The present invention provides an automatic elastic detection device for titanium wire materials. When detecting the elasticity of titanium wire materials, by means of the provided operating table, first stretching rod, second stretching rod, driving mechanism, first mounting block, second mounting block, fixture, end positioning structure and positioning stretching mechanism, the titanium wire materials can be first stretched to a horizontal state, and then the two ends of the titanium wire materials are clamped and fixed by the two fixtures, so as to ensure the length of the titanium wire materials between the two fixtures, and also ensure the clamping positions of the titanium wire materials and the fixtures, reduce the bending of the titanium wire materials after being clamped, reduce the influence on the elastic test results of the titanium wire materials, conduct a bending test on the titanium wire materials, realize automatic detection, and the operation is simple and convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of elastic testing equipment, and particularly relates to an automatic elastic detection equipment for titanium wire materials. Background Art

[0002] Titanium has a relatively low elastic modulus, about 106.4 GPa at room temperature, only 57% of that of steel. This property enables titanium wire materials to have good elastic deformation ability when subjected to external forces, and is suitable for components that require high elasticity, such as springs, orthopedic devices, etc. In order to better evaluate the basic mechanical properties of titanium wire materials and ensure the reliability of titanium wire materials in practical applications, it is necessary to conduct elastic detection on titanium wire materials, so as to guide the research and development and improvement of titanium wire materials, control the quality of titanium wire materials, and evaluate the durability and service life of the materials.

[0003] When conducting elastic detection on titanium wire materials, it is usually necessary to conduct tests such as bending and stretching. Most of them use two instruments to conduct bending and stretching tests on titanium wire materials respectively. When conducting tensile tests, most of them use two clamps to clamp and fix the two ends of the titanium wire material respectively, and slide one of the clamps to record various data of the titanium wire material during the detection process (such as maximum tensile force, yield point load, elongation at break, etc.). However, in actual situations, in order to ensure the accuracy of the detection data of titanium wire materials, it is necessary to cut out multiple specimens that meet the standard size requirements from the same batch of titanium wire materials. However, during the clamping process, it is impossible to accurately ensure that the length of the titanium wire material between the two clamps is the same and the clamping position is the same, which will affect the test results. Summary of the Invention

[0004] Based on the technical problems existing in the background art, the present invention proposes an automatic elastic detection equipment for titanium wire materials.

[0005] An automatic elastic detection equipment for titanium wire materials proposed by the present invention includes an operating table. A first stretching rod and a second stretching rod are rotatably installed on the top surface of the operating table. The first stretching rod and the second stretching rod are symmetrically arranged with respect to the operating table. A driving mechanism is installed on the operating table. The driving mechanism can synchronously drive the first stretching rod and the second stretching rod to rotate on the operating table, and the rotation directions of the first stretching rod and the second stretching rod are opposite;

[0006] A first mounting block is rotatably installed on the first stretching rod, a second mounting block is rotatably installed on the second stretching rod, and clamps are installed on both the first mounting block and the second mounting block;

[0007] An end positioning structure is installed on the first mounting block. The end positioning structure is used to fix one end of the titanium wire material. A positioning and stretching mechanism is installed on the second mounting block. The positioning and stretching mechanism is used to straighten the titanium wire material and fix the position of the other end of the titanium wire material. And both clamps are located between the end positioning structure and the positioning and stretching mechanism.

[0008] Preferably, the end positioning structure includes a positioning cone, elastic clamping blocks and a threaded extrusion cylinder; the positioning cone is fixedly installed on the first mounting block, and the positioning cone is arranged parallel to the first mounting block. The number of elastic clamping blocks is multiple, and the multiple elastic clamping blocks are arranged in an annular array at the end of the positioning cone. The threaded extrusion cylinder is threadedly sleeved on the positioning cone, and the threaded extrusion cylinder can squeeze the multiple elastic clamping blocks to move closer to each other.

[0009] Preferably, the positioning and stretching mechanism includes a driving roller, a supporting roller, a stretching motor, an adjusting component and a positioning component; the driving roller and the supporting roller are both rotatably installed on the second mounting block, the driving roller and the supporting roller are arranged parallel to each other, the stretching motor is installed in the second mounting block, and the output shaft of the stretching motor is fixedly connected to the driving roller;

[0010] The adjusting component is used to adjust the distance between the supporting roller and the driving roller;

[0011] The positioning component is used to fix the position of the supporting roller on the second mounting block.

[0012] Preferably, the adjusting component includes a driving shaft seat; the driving shaft seat is slidably installed on the second mounting block, and the supporting roller is rotatably sleeved on the driving shaft seat.

[0013] Preferably, the positioning component includes a positioning pin, a positioning spring and a pressing rod; a receiving hole is formed in the second mounting block, the positioning pin is slidably installed in the receiving hole, the positioning spring is located in the receiving hole, and the two ends of the positioning spring respectively abut against the inner wall of the end of the receiving hole and the end of the positioning pin. A positioning hole adapted to the positioning pin is formed at the bottom of the driving shaft seat;

[0014] The pressing rod slidably penetrates through the driving shaft seat, and the pressing rod can push the positioning pin out of the positioning hole. A convex platform is circumferentially arranged on the outer periphery of the pressing rod, a limiting sliding groove slidably matched with the convex platform is formed in the driving shaft seat, and a return spring is arranged in the limiting sliding groove. The two ends of the return spring can abut against the inner wall of the end of the limiting sliding groove and the convex platform.

[0015] Preferably, a guiding mechanism is installed on the operating table. When the first stretching rod and the second stretching rod rotate close to each other, the guiding mechanism can drive the first mounting block and the second mounting block to rotate away from each other.

[0016] Preferably, the guiding mechanism includes a first guiding gear, a second guiding gear and a guiding tooth plate; the first mounting block is rotatably mounted on the first stretching rod through a first rotating shaft, and the first guiding gear is fixedly connected to the first rotating shaft of the first mounting block;

[0017] The second mounting block is rotatably mounted on the second stretching rod through a second rotating shaft, and the second guiding gear is fixedly connected to the second rotating shaft;

[0018] The guiding tooth plate is fixedly mounted on the operating table, and both the first guiding gear and the second guiding gear are meshed with the guiding tooth plate.

[0019] Preferably, the driving mechanism includes a first gear, a second gear and a driving motor; the first gear is fixedly connected to the end of the first stretching rod, the first gear is rotatably mounted on the operating table, the second gear is fixedly connected to the end of the second stretching rod, the second gear is rotatably mounted on the operating table, the first gear is meshed with the second gear, the driving motor is fixedly mounted in the operating table, and the output shaft of the driving motor is fixedly connected to the first gear.

[0020] Preferably, a protective cover is mounted on the operating table, and the protective cover covers the outside of the first gear and the second gear.

[0021] Preferably, the fixture includes two clamping blocks; both clamping blocks are slidably mounted on the first mounting block.

[0022] The automatic titanium wire elastic detection device proposed by the present invention has the following beneficial effects: by setting the operating table, the first stretching rod, the second stretching rod, the driving mechanism, the first mounting block, the second mounting block, the fixture, the end positioning structure and the positioning stretching mechanism, when performing the elastic detection of the titanium wire, the titanium wire can be first straightened to a horizontal state, and then the two ends of the titanium wire are clamped and fixed by the two fixtures, so as to ensure the length of the titanium wire between the two fixtures, and also ensure the clamping position of the titanium wire and the fixture, reduce the bending of the titanium wire after being clamped, reduce the influence on the elastic test result of the titanium wire, and can also perform a bending test on the titanium wire, and can realize automatic detection, with simple and convenient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is the overall structural schematic diagram of an automatic titanium wire elastic detection device proposed by the present invention;

[0024] Figure 2 is the top view of the automatic titanium wire elastic detection device proposed by the present invention with the protective cover removed;

[0025] Figure 3Schematic diagram of the structure of an automatic elastic detection device for titanium wire materials proposed by the present invention, removing the first mounting block, the second mounting block, and the protective cover;

[0026] Figure 4 Top view of an automatic elastic detection device for titanium wire materials proposed by the present invention, removing the first mounting block, the second mounting block, and the protective cover;

[0027] Figure 5 An automatic elastic detection device for titanium wire materials proposed by the present invention Figure 1 Enlarged view at position A;

[0028] Figure 6 An automatic elastic detection device for titanium wire materials proposed by the present invention Figure 1 Enlarged view at position B;

[0029] Figure 7 Cross-sectional view of the end positioning structure in an automatic elastic detection device for titanium wire materials proposed by the present invention;

[0030] Figure 8 Cross-sectional view of the positioning and stretching mechanism in an automatic elastic detection device for titanium wire materials proposed by the present invention.

[0031] In the figure: 1, operating platform; 2, first stretching rod; 3, second stretching rod; 4, first mounting block; 5, second mounting block; 6, positioning cone; 7, elastic clamping block; 8, threaded extrusion cylinder; 9, driving roller; 10, auxiliary roller; 11, stretching motor; 12, driving shaft seat; 13, positioning pin; 14, positioning spring; 15, pressing rod; 16, return spring; 17, first guiding gear; 18, second guiding gear; 19, guiding tooth plate; 20, first gear; 21, second gear; 22, protective cover; 23, clamping block. Specific embodiments

[0032] Refer to Figures 1 - 8The present invention proposes an automatic testing device for elasticity of titanium wire, comprising an operating table 1, a No. 1 stretching rod 2 and a No. 2 stretching rod 3 are rotatably installed on the top surface of the operating table 1, the No. 1 stretching rod 2 and the No. 2 stretching rod 3 are symmetrically arranged about the operating table 1, a driving mechanism is installed on the operating table 1, the driving mechanism can synchronously drive the No. 1 stretching rod 2 and the No. 2 stretching rod 3 to rotate on the operating table 1, and the rotation directions of the No. 1 stretching rod 2 and the No. 2 stretching rod 3 are opposite, the No. 1 stretching rod 2 and the No. 2 stretching rod 3 can move away from or close to each other, a No. 1 mounting block 4 is rotatably installed on the No. 1 stretching rod 2, and a No. 2 stretching rod 3 is rotatably installed with two mounting blocks. The first mounting block 5, the second mounting block 5 and the second mounting block 5 are both equipped with a clamp, which includes two clamps 23; the two clamps 23 are both slidably mounted on the first mounting block 4, and the clamps 23 are driven by an electric slide rail or an existing driving mechanism such as a cylinder or a hydraulic cylinder, which can ensure the firmness of the clamping of the two ends of the titanium wire, and at the same time control the clamping force to reduce the situation where the titanium wire is damaged by excessive clamping. After the two clamps clamp the titanium wire, when the first stretching rod 2 and the second stretching rod 3 move away from each other, the titanium wire is subjected to a tensile test. At the same time, since the first mounting block 4 and the second mounting block 5 are respectively mounted on one side by rotation, The No. 1 stretching rod 2 and the No. 2 stretching rod 3 keep the titanium wire and the fixture in a straight line at all times, reducing the bending of the titanium wire and the clamping position that affects the test results. The two clamps move away from each other at the same speed at the same time. At this time, the tension on the titanium wire comes from two directions, and the magnitude is equal and the direction is opposite. This can make the stress distribution of the titanium wire more uniform along the entire length direction (in contrast, when moving on one side, the tension is only applied from one side, which may cause local stress concentration on the titanium wire and affect the accuracy of the test results). Uniform force helps to reduce the local deformation of the titanium wire at the clamping position. When the two clamps are moved at the same time, the tension on the titanium wire comes from two directions, and the magnitude is equal and the direction is opposite. This can make the stress distribution of the titanium wire more uniform along the entire length direction. When moving, the clamping force on the clamping part of the titanium wire is more balanced, and local plastic deformation or damage caused by excessive clamping force on one side is less likely to occur, thereby better protecting the integrity of the titanium wire. Finally, the driving mechanism drives the titanium wire to be stretched to achieve automatic detection (in the tensile test, a high-precision stress sensor can be installed between the fixture and the titanium wire. When tension is applied to the titanium wire, the stress sensor will directly measure the force acting on the titanium wire and convert it into an electrical signal output. Through real-time monitoring and analysis of the output signal of the stress sensor, the stress change curve of the titanium wire with time or displacement during the stretching process can be obtained).

[0033] In actual situations, when clamping titanium wire materials, fixtures are usually used to clamp and fix both ends of the titanium wire materials. However, it is impossible to ensure that the lengths of the titanium wire materials between the two fixtures are the same, which will lead to inaccurate test results (when the titanium wire is short and the distance between the fixtures is small, the bending degree of the titanium wire in the fixtures will increase, resulting in stress concentration; stress concentration will cause the titanium wire to bear greater stress in the area near the fixtures, thus affecting the accuracy of the test results; in contrast, the longer titanium wire has a smaller bending degree between the fixtures and the stress distribution is more uniform). At the same time, it is also possible that the clamping positions of the titanium wire materials and the fixtures are different, resulting in bending between the titanium wire materials clamped by the titanium wire materials and the fixtures during the tensile test, causing local stress concentration of the titanium wire materials. The stress at the bending part will be significantly higher than that at other parts, making the titanium wire materials more likely to deform and break at these parts, thus affecting the accuracy of the test results. Therefore, the following design is proposed.

[0034] As Figure 1 、 Figure 2 、 Figure 5 and Figure 6 shown, an end positioning structure is installed on the first mounting block 4, and the end positioning structure is used to fix one end of the titanium wire material. A positioning and stretching mechanism is installed on the second mounting block 5, and the positioning and stretching mechanism is used to straighten the titanium wire material and fix the position of the other end of the titanium wire material. And both fixtures are located between the end positioning structure and the positioning and stretching mechanism. Before clamping and fixing the titanium wire material, one end of the titanium wire material is fixed by the end positioning structure, and the other end is straightened and positioned by the positioning and stretching mechanism for the titanium wire material, so that the titanium wire material maintains a horizontal and straight state (at this time, the two clamping blocks 23 in the same fixture are symmetrically arranged with respect to the titanium wire material, and the straightened titanium wire material is located between the cracks of the two fixtures), and then the two fixtures clamp the straightened titanium wire material, thereby ensuring the length of the titanium wire material between the two fixtures. In addition, the straightening force on the titanium wire groove can be controlled to ensure the initial tensile force of the titanium wire material and reduce the factors affecting the test results.

[0035] As Figure 1 、 Figure 2 、 Figure 5 and Figure 7As shown in the figure, the end positioning structure includes a positioning cone barrel 6, elastic clamping blocks 7, and a threaded extrusion barrel 8; the positioning cone barrel 6 is fixedly installed on the first mounting block 4, and the positioning cone barrel 6 is arranged parallel to the first mounting block 4. The number of elastic clamping blocks 7 is multiple, and the multiple elastic clamping blocks 7 are arranged in an annular array at the end of the positioning cone barrel 6. The threaded extrusion barrel 8 is threadedly sleeved on the positioning cone barrel 6. The threaded extrusion barrel 8 can squeeze the multiple elastic clamping blocks 7 to move closer to each other. The height of the positioning cone barrel 6 on the first mounting block 4 remains unchanged all the time. A tapered hole is opened on the positioning cone barrel 6, and the end of the titanium wire material is inserted from the large-diameter end, which is convenient for the insertion of the titanium wire material. After the titanium wire material passes through the positioning cone barrel 6, rotate the threaded extrusion barrel 8 so that the threaded extrusion barrel 8 squeezes the elastic clamping blocks 7, and the end of the titanium wire material is clamped and fixed by the multiple elastic clamping blocks 7, so as to position the end of the titanium wire material.

[0036] As Figure 1 , Figure 2 , Figure 6 and Figure 8 shown in the figure, the positioning and stretching mechanism includes a driving roller 9, an auxiliary roller 10, a stretching motor 11, an adjusting component, and a positioning component; both the driving roller 9 and the auxiliary roller 10 are rotatably installed on the second mounting block 5, and the driving roller 9 and the auxiliary roller 10 are arranged parallel to each other. The stretching motor 11 is installed in the second mounting block 5, and the output shaft of the stretching motor 11 is fixedly connected to the driving roller 9. The adjusting component is used to adjust the distance between the auxiliary roller 10 and the driving roller 9, and the positioning component is used to fix the position of the auxiliary roller 10 on the second mounting block 5. When fixing the position of the other end of the titanium wire material, first adjust the distance between the auxiliary roller 10 and the driving roller 9 through the adjusting component, and then place the other end of the titanium wire material in the gap between the driving roller 9 and the auxiliary roller 10. Friction rings are arranged on the outer peripheries of both the driving roller 9 and the auxiliary roller 10. Place the titanium wire material at the position of the friction rings (it can be replaced by opening a circular groove, which can better limit and position the titanium wire material), and then adjust the auxiliary roller 10 to be close to the driving roller 9 and clamp the titanium wire material through the adjusting component (at this time, the driving roller 9 and the auxiliary roller 10 are engaged). Fix the position of the auxiliary roller 10 by the positioning component, and drive the driving roller 9 and the auxiliary roller 10 to rotate by the operation of the stretching motor 11, and straighten the titanium wire material by the frictional force between the friction rings and the titanium wire material (the height of the friction rings is the same as the axis height of the positioning cone barrel 6).

[0037] As Figure 6 and Figure 8 shown in the figure, the adjusting component includes a driving shaft seat 12; the driving shaft seat 12 is slidably installed on the second mounting block 5, and the auxiliary roller 10 is rotatably sleeved on the driving shaft seat 12. The driving shaft seat 12 slides on the second mounting block 5, which is convenient for adjusting the size of the gap between the auxiliary roller 10 and the driving roller 9, so as to facilitate the placement of the titanium wire material in the gap between the two.

[0038] As Figure 6 andFigure 8 As shown, the positioning component includes a positioning pin 13, a positioning spring 14, and a pressing rod 15; a receiving hole is formed in the second mounting block 5, the positioning pin 13 is slidably mounted in the receiving hole, the positioning spring 14 is located in the receiving hole, and both ends of the positioning spring 14 are respectively abutted against the inner wall of the end of the receiving hole and the end of the positioning pin 13. A positioning hole adapted to the positioning pin 13 is formed in the bottom of the driving shaft seat 12. The pressing rod 15 slidably penetrates through the driving shaft seat 12, and the pressing rod 15 can push the positioning pin 13 out of the positioning hole. A boss is circumferentially arranged on the outer periphery of the pressing rod 15. A limiting sliding groove slidably engaged with the boss is formed in the driving shaft seat 12. A return spring 16 is arranged in the limiting sliding groove, and both ends of the return spring 16 can be abutted against the inner wall of the end of the limiting sliding groove and the boss. When straightening the titanium wire material, under the rebounding action of the return spring 16, the positioning pin 13 is driven into the positioning hole at the bottom of the driving shaft seat 12, thereby fixing the position of the positioning pin 13 on the second mounting block 5. By pressing the pressing rod 15, the pressing rod 15 drives the positioning pin 13 to disengage from the positioning hole, and the driving shaft seat 12 is slid, so as to adjust the gap size between the auxiliary roller 10 and the driving roller 9. The operation is simple and convenient, and the boss and the pressing rod 15 are driven to rise and reset by the rebounding action of the return spring 16.

[0039] In actual situations, when detecting the elasticity of the titanium wire material, in addition to performing tensile tests on the titanium wire material, bending tests are also required. This device can not only perform tensile tests but also bending tests (strain gauges are pasted on the surface of the bent part of the titanium wire material. When the titanium wire material undergoes bending deformation, the strain gauges will sense different degrees of tensile or compressive strain. According to the resistance change of the strain gauges, the strain value is measured, and then the stress is calculated based on the mechanical property parameters of the material. Since the stress states at different positions of the titanium wire material are different during the bending process, strain gauges usually need to be pasted at multiple key positions to comprehensively understand the stress distribution and change conditions), as follows.

[0040] Such as Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown in , a guide mechanism is installed on the operating table 1. When the No. 1 stretching rod 2 and the No. 2 stretching rod 3 rotate toward each other, the guide mechanism can drive the No. 1 mounting block 4 and the No. 2 mounting block 5 to rotate away from each other. When the titanium wire is subjected to bending detection, the No. 1 stretching rod 2 and the No. 2 stretching rod 3 are driven by the driving mechanism to move toward each other. When the titanium wire is bent, in order to reduce the amount of bending between the titanium wire and the titanium wire clamped by the clamp, when the titanium wire is bent, the No. 1 mounting block 4 and the No. 2 mounting block 5 rotate away from each other at the same time, cooperating with the bending of the titanium wire, thereby ensuring that the bending detection result is affected, and the guide mechanism limits the rotation angle of the No. 1 mounting block 4 and the No. 2 mounting block 5, so that the rotation angle of the No. 1 mounting block 4 and the No. 2 mounting block 5 is consistent, thereby reducing the impact on the bending detection result of the titanium wire.

[0041] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown in the figure, the guide mechanism includes a No. 1 guide gear 17, a No. 2 guide gear 18 and a guide tooth plate 19; the No. 1 mounting block 4 is rotatably mounted on the No. 1 stretching rod 2 through the No. 1 rotating shaft, the No. 1 guide gear 17 is fixedly connected to the No. 1 rotating shaft of the No. 1 mounting block 4, the No. 2 mounting block 5 is rotatably mounted on the No. 2 stretching rod 3 through the No. 2 rotating shaft, the No. 2 guide gear 18 is fixedly connected to the No. 2 rotating shaft, and the guide tooth plate 19 is fixedly mounted on the operating table 1, the No. 1 guide gear 17 and the No. 2 guide gear 18 are both meshed with the guide tooth plate 19, when the No. 1 stretching rod 2 and the No. 2 stretching rod 3 move synchronously towards each other, they respectively drive the No. 1 guide gear 17 and the No. 2 guide gear 18 to move synchronously, because the No. 1 guide gear 17 and the No. 2 guide gear 18 are both meshed with the guide tooth plate 19, The No. 1 guide gear 17 and the No. 2 guide gear 18 rotate in opposite directions and at the same angle, so that the rotation angles at both ends of the titanium wire are consistent, reducing the factors that affect the bending test results (the rotation of the fixtures away from each other can ensure that the titanium wire maintains a uniform stress distribution during the bending process. If the fixtures do not rotate, stress concentration may occur in certain parts of the titanium wire during bending, resulting in local deformation or fracture. The rotating fixture can reduce this stress concentration, so that the titanium wire is subjected to more uniform force during the entire bending process. The rotation of the fixture can reduce friction and wear on the surface of the sample. During the bending process, the relative movement between the fixture and the sample may cause surface damage. The rotating fixture can reduce this damage, thereby better protecting the sample surface).

[0042] like Figure 2 , Figure 3 and Figure 4As shown in the figure, the drive mechanism includes a first gear 20, a second gear 21 and a drive motor; the first gear 20 is fixedly connected to the end of the first stretching rod 2, the first gear 20 is rotatably installed on the operation table 1, the second gear 21 is fixedly connected to the end of the second stretching rod 3, the second gear 21 is rotatably installed on the operation table 1, the first gear 20 meshes with the second gear 21, the drive motor is fixedly installed in the operation table 1, the output shaft of the drive motor is fixedly connected to the first gear 20, a protective cover 22 is installed on the operation table 1, the protective cover 22 covers the outside of the first gear 20 and the second gear 21, the drive motor works to drive the first gear 20 to rotate, because the second gear 21 meshes with the first gear 20, so as to drive the first gear 20 and the second gear 21 to rotate synchronously away from or close to each other, so as to realize the synchronous rotation of the first stretching rod 2 and the second stretching rod 3, and reduce the factors affecting the detection result.

[0043] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An automatic testing device for titanium wire elasticity, characterized in that: The invention comprises an operating table (1), wherein a first stretching rod (2) and a second stretching rod (3) are rotatably mounted on the top surface of the operating table (1), wherein the first stretching rod (2) and the second stretching rod (3) are symmetrically arranged with respect to the operating table (1), and a driving mechanism is mounted on the operating table (1), wherein the driving mechanism can synchronously drive the first stretching rod (2) and the second stretching rod (3) to rotate on the operating table (1), and the rotation directions of the first stretching rod (2) and the second stretching rod (3) are opposite; A first mounting block (4) is rotatably mounted on the first stretching rod (2), a second mounting block (5) is rotatably mounted on the second stretching rod (3), and a clamp is mounted on both the first mounting block (4) and the second mounting block (5); The No. 1 mounting block (4) is provided with an end positioning structure, the end positioning structure being used to fix one end of the titanium wire, and the No. 2 mounting block (5) is provided with a positioning and stretching mechanism, the positioning and stretching mechanism being used to straighten the titanium wire and fix the position of the other end of the titanium wire, and both clamps are located between the end positioning structure and the positioning and stretching mechanism; The operating table (1) is provided with a guide mechanism, and when the No. 1 stretching rod (2) and the No. 2 stretching rod (3) rotate toward each other, the guide mechanism can drive the No. 1 mounting block (4) and the No. 2 mounting block (5) to rotate away from each other; The guide mechanism comprises a No. 1 guide gear (17), a No. 2 guide gear (18) and a guide tooth plate (19); the No. 1 mounting block (4) is rotatably mounted on the No. 1 stretching rod (2) via a No. 1 rotating shaft, and the No. 1 guide gear (17) is fixedly connected to the No. 1 rotating shaft of the No. 1 mounting block (4); The second mounting block (5) is rotatably mounted on the second stretching rod (3) via a second rotating shaft, and the second guide gear (18) is fixedly connected to the second rotating shaft; The guide tooth plate (19) is fixedly mounted on the operating table (1), and the first guide gear (17) and the second guide gear (18) are both meshed with the guide tooth plate (19); The driving mechanism comprises a first gear (20), a second gear (21) and a driving motor; the first gear (20) is fixedly connected to the end of the first stretching rod (2), the first gear (20) is rotatably mounted on the operating table (1), the second gear (21) is fixedly connected to the end of the second stretching rod (3), the second gear (21) is rotatably mounted on the operating table (1), the first gear (20) is meshed with the second gear (21), the driving motor is fixedly mounted in the operating table (1), and the output shaft of the driving motor is fixedly connected to the first gear (20).

2. The automatic testing device for titanium wire elasticity according to claim 1, characterized in that: The end positioning structure comprises a positioning cone (6), an elastic clamping block (7) and a threaded extrusion cylinder (8); the positioning cone (6) is fixedly mounted on the No. 1 mounting block (4), and the positioning cone (6) and the No. 1 mounting block (4) are arranged in parallel; there are a plurality of elastic clamping blocks (7), and the plurality of elastic clamping blocks (7) are arranged in a ring array at the end of the positioning cone (6); the threaded extrusion cylinder (8) is threadedly mounted on the positioning cone (6), and the threaded extrusion cylinder (8) can extrude the plurality of elastic clamping blocks (7) to move toward each other.

3. The automatic testing device for titanium wire elasticity according to claim 1, characterized in that: The positioning and stretching mechanism comprises a driving roller (9), an auxiliary roller (10), a stretching motor (11), an adjustment component and a positioning component; the driving roller (9) and the auxiliary roller (10) are both rotatably mounted on the second mounting block (5), the driving roller (9) and the auxiliary roller (10) are arranged parallel to each other, the stretching motor (11) is mounted in the second mounting block (5), and the output shaft of the stretching motor (11) is fixedly connected to the driving roller (9); The adjustment component is used to adjust the distance between the auxiliary roller (10) and the driving roller (9); The positioning assembly is used to fix the position of the auxiliary roller (10) on the second mounting block (5).

4. The titanium wire elasticity automatic detection device according to claim 3, characterized in that: The adjustment component comprises a driving shaft seat (12); the driving shaft seat (12) is slidably mounted on the second mounting block (5), and the auxiliary roller (10) is rotatably sleeved on the driving shaft seat (12).

5. The titanium wire elasticity automatic detection device according to claim 4, characterized in that: The positioning assembly comprises a positioning pin (13), a positioning spring (14) and a pressing rod (15); a receiving hole is provided on the second mounting block (5), the positioning pin (13) is slidably installed in the receiving hole, the positioning spring (14) is located in the receiving hole, the two ends of the positioning spring (14) are respectively abutted against the inner wall of the end of the receiving hole and the end of the positioning pin (13), and a positioning hole adapted to the positioning pin (13) is provided at the bottom of the active shaft seat (12); The pressing rod (15) slides through the active shaft seat (12), and the pressing rod (15) can push the positioning pin (13) out of the positioning hole. A boss is circumferentially arranged on the outer periphery of the pressing rod (15). A limiting slide groove that slides with the boss is provided in the active shaft seat (12). A return spring (16) is provided in the limiting slide groove. Both ends of the return spring (16) can abut against the inner wall of the end of the limiting slide groove and the boss.

6. The titanium wire elasticity automatic detection device according to claim 1, characterized in that: A protective cover (22) is installed on the operating table (1), and the protective cover (22) covers the outside of the first gear (20) and the second gear (21).

7. The titanium wire elasticity automatic detection device according to claim 1, characterized in that: The clamp comprises two clamping blocks (23); the two clamping blocks (23) are both slidably mounted on a No. 1 mounting block (4).

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