Double-thread screw automatic bending device with pulling force

Abstract

The utility model relates to the technical field of material testing machines, in particular to a double-thread screw automatic bending device with tension. An automatic double-thread screw bending device with tension is used for being connected with a rotating shaft of a bending testing machine and comprises a clamping mechanism and a supporting mechanism, and the clamping mechanism comprises a double-thread screw, a chuck and a fillet clamp which are sequentially arranged from top to bottom. The supporting mechanism comprises a supporting plate arranged between the double-thread threaded rod and the chuck and a supporting frame used for being stably connected with and supporting the supporting plate, and an elastic assembly capable of adjusting the elastic deformation amount is arranged at the upper end of the double-thread threaded rod.

Description

Technical Field

[0001] The present application relates to the technical field of material testing machines, and in particular to a double-headed screw with tension automatic bending device. Background Art

[0002] In the process of material testing, the bending test of the specimen is an important part of evaluating the material performance. It is applicable to various types of materials, including polymer materials, composite materials, synthetic materials, nanomaterials, rubber, plastics, fibers, cardboard, metals, etc. Whether it is a brittle material or a highly plastic material, its performance can be evaluated through the bending test. It can directly reflect the mechanical response of the material when subjected to a bending load, such as the bending stiffness, bending strength and other parameters of the material. These parameters are important bases for evaluating the applicability, durability and safety of the material.

[0003] During the bending process of the specimen, existing bending testing machines often have problems such as unstable specimen positioning and easy rotation deviation, which affects the accuracy and repeatability of the test. At present, in order to solve the positioning problem during the bending process of the specimen, methods such as increasing the clamping force of the fixture or improving the fixture design are usually adopted.

[0004] However, these methods have limited effects in practical applications and still cannot completely solve the problem that the bending test machine is easy to rotate after the specimen is tensioned, resulting in rotation deviation during the bending process, which seriously affects the accuracy and reliability of the test results. In order to solve the above problems, a double-headed screw belt tension automatic bending device is specially provided. Utility Model Content

[0005] The present application provides a double-headed screw with tension automatic bending device, which aims to solve the problem that the sample is easy to rotate and deviate during the bending process, and realizes stable tensioning and precise positioning of the sample.

[0006] The present application provides a double-headed screw with tension automatic bending device adopts the following technical solution:

[0007] A double-headed screw with tension automatic bending device is used to be connected to the rotating shaft of a bending testing machine, including a clamping mechanism and a supporting mechanism. The clamping mechanism includes a double-headed threaded screw, a chuck, and a fillet clamp arranged in sequence from top to bottom. The supporting mechanism includes a support plate arranged between the double-headed threaded screw and the chuck and a support frame for firmly connecting and supporting the support plate. The upper end of the double-headed threaded screw is provided with an elastic component capable of adjusting the elastic deformation amount.

[0008] By adopting the above technical solution: the clamping mechanism composed of a double-threaded screw, a chuck and a rounded corner clamp can stably clamp the sample, and the tension of the sample can be accurately controlled by adjusting the elastic component, thereby ensuring that the sample will not affect the experimental results due to relaxation during the bending process;

[0009] In addition, the combined use of the clamping mechanism and the supporting mechanism, especially the stable supporting function of the supporting plate and the supporting frame, ensures the precise positioning of the specimen, effectively avoids the rotation or deviation of the specimen during the bending process, and improves the accuracy and reliability of the experiment.

[0010] Preferably, the elastic component is a spring sleeved on the upper end of the double-threaded screw and a nut abutting against the upper end of the spring.

[0011] By adopting the above technical solution: adjusting the relative position of the nut and the upper end of the spring, the compression amount of the spring can be easily changed, thereby realizing rapid adjustment of the tensioning force of the sample. This operation method is simple and intuitive, easy to understand and operate.

[0012] Preferably, one section of the double-threaded screw is a long threaded rod, and the other section is a short threaded rod. A rectangular block is provided between the long threaded rod and the short threaded rod, and the cross section of the rectangular block is square.

[0013] By adopting the above technical solution: the design of the rectangular block increases the structural strength of the double-threaded screw, enabling it to withstand greater tension and torque, ensuring that the screw will not be deformed or broken due to excessive force during the bending process, and the extension length of the screw can be adjusted according to the size and needs of the sample, thereby achieving precise clamping and positioning of the sample. In addition, the rectangular block serves as a connection fixing point, which helps to maintain the stability and accuracy of the screw during the adjustment process.

[0014] Preferably, the support plate is provided with mounting holes for mounting double-threaded screws and fastening holes for connecting the support frame.

[0015] By adopting the above technical solution: the assembly process of the double-threaded screw and the support frame can be greatly simplified, and the assembly efficiency can be improved. The mounting hole ensures that the double-threaded screw can be accurately and firmly installed on the support plate, thereby ensuring the stability and accuracy of the entire clamping mechanism. The connection between the fastening hole and the support frame can strengthen the connection strength between the support plate and the support frame, making the entire device more stable when subjected to the tensile force of the specimen. This design helps to improve the service life and reliability of the device.

[0016] Preferably, a fixed base is provided at the bottom of the rounded corner fixture.

[0017] By adopting the above technical solution: the stability of each accessory can be significantly enhanced.

[0018] Preferably, a gasket is provided between the fixed base and the rounded corner clamp.

[0019] By adopting the above technical solution, the rotating drawer and the fillet fixture can be adjusted to keep the center of the circle on the same horizontal line.

[0020] Preferably, the support frame is provided with a connecting hole for connecting the rotating shaft of the bending testing machine.

[0021] By adopting the above technical solution, the support frame can be directly connected to the rotating shaft of the bending testing machine without the need for additional connectors or adapters, thereby simplifying the installation process of the device and improving work efficiency.

[0022] Preferably, a limit block for limiting the clamping position is provided on the support frame.

[0023] By adopting the above technical solution: it is ensured that the clamping mechanism can accurately position and clamp the sample during operation, which helps to reduce the positioning error caused by human factors. At the same time, it also plays a certain stabilizing role on the entire device. It can reduce the shaking and instability of the device during the bending process, making the test results more accurate and reliable.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. The device achieves stable tensioning and precise positioning of the specimen through the coordinated action of the double-threaded screw, chuck, rounded corner fixture and elastic component. This design ensures that the specimen will not affect the test results due to relaxation or deviation during the bending process, thereby improving the accuracy and reliability of the experiment;

[0026] 2. By adjusting the relative position of the nut and the spring, the compression of the spring can be easily changed, thereby realizing the rapid adjustment of the tension of the specimen. At the same time, the long and short threaded rods of the double-threaded screw allow the extension length of the screw to be adjusted according to the size and needs of the specimen, thereby realizing the precise clamping and positioning of the specimen. This operation method is simple and intuitive, easy to understand and operate, and improves work efficiency.

[0027] 3. The device adopts a variety of designs to enhance stability, such as the rectangular block increases the structural strength of the double-threaded screw, the support plate and support frame provide a stable support, the fixed base and gasket ensure the stability of the device, and can adapt to different test environments, so that the device can withstand greater tension and torque, ensuring that no deformation or breakage occurs during the bending process, and improving the service life and reliability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the double-headed screw with tension automatic bending device according to an embodiment of the present application;

[0029] Figure 2 This is another overall structural schematic diagram of the double-headed screw with tension automatic bending device according to an embodiment of the present application;

[0030] Figure 3 It is a schematic diagram of the overall structure of a double-threaded screw in a double-threaded screw with tension automatic bending device in an embodiment of the present application;

[0031] Figure 4 It is a schematic diagram of the overall structure of the support plate in the double-headed screw belt tension automatic bending device according to an embodiment of the present application.

[0032] Figure numerals: 1. clamping mechanism; 11. double-threaded screw; 111. long threaded rod; 112. short threaded rod; 113. rectangular block; 12. chuck; 13. rounded corner clamp; 2. supporting mechanism; 21. supporting plate; 211. mounting hole; 212. fastening hole; 22. supporting frame; 221. connecting hole; 222. limit block; 3. elastic component; 31. spring; 32. nut; 4. fixed base; 5. gasket; 6. bending testing machine; 61. rotating shaft. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-4 This application is described in further detail. Example

[0034] The embodiment of the present application discloses a double-headed screw belt tension automatic bending device, which is used to be connected to the rotating shaft 61 of the bending test machine 6. The device mainly includes a clamping mechanism 1 and a supporting mechanism 2. Through the synergistic effect of these two parts, it can be ensured that the sample will not rotate or deviate during the bending process, thereby improving the accuracy and reliability of the experiment.

[0035] Reference Figure 1 and Figure 3 The clamping mechanism 1 is composed of a double-threaded screw 11, a chuck 12, and a rounded corner clamp 13 installed in sequence from top to bottom. An elastic component 3 capable of adjusting the elastic deformation is installed on the long threaded rod 111 of the double-threaded screw 11. In this embodiment, the elastic component 3 is a spring 31 and a nut 32 abutting against the upper end of the spring 31, and one end of the short threaded rod 112 of the double-threaded screw 11 is connected to the chuck 12. By rotating the nut 32, the telescopic deformation of the spring 31 can be easily changed, thereby realizing rapid adjustment of the tensioning force of the sample.

[0036] The support mechanism 2 is composed of a support plate 21 and a support frame 22. Figure 2 and Figure 4The support plate 21 is provided with a mounting hole 211 for installing the double-threaded screw 11 and a fastening hole 212 for connecting and fixing the support frame 22. In this embodiment, the mounting hole 211 is square, and a rectangular block 113 is installed between the long threaded rod 111 and the short threaded rod 112 on the double-threaded screw 11. Its cross-section is square. The square mounting hole 211 is adapted to the rectangular block 113 on the double-threaded screw 11, so that the double-threaded screw 11 can be fixedly installed on the support plate 21, and its long threaded rod 111 is located above the support plate 21, and the short threaded rod 112 is located below the support plate 21.

[0037] To enhance the overall stability of the device, refer to Figure 1 and Figure 2 A fixed base 4 is installed at the bottom of the fillet fixture 13, and it is convenient to adjust the rotation shaft 61 and the fillet fixture 13 to keep the center of the circle on the same horizontal line. A gasket 5 is also installed between the fixed base 4 and the fillet fixture 13. By increasing or decreasing the number of gaskets 5 or selecting gaskets 5 of different thicknesses, the height of the fillet fixture 13 can be fine-tuned to ensure that it is aligned with the center of the circle of the rotation shaft 61;

[0038] In addition, a limit block 222 for limiting the clamping position is installed above the support frame 22 near the rounded corner clamp 13. The limit block 222 is maintained in the same straight line as the rounded corner clamp 13 and the chuck 12, and a connecting hole 221 for connecting to the rotating shaft 61 of the bending testing machine 6 is opened below the support frame 22 near the rounded corner clamp 13, so that the installation and disassembly of the device becomes simple and quick.

[0039] The working process and implementation principle of the embodiment are as follows:

[0040] The support plate 21 is installed on the support frame 22 through the fastening hole 212 and fastened with a screw, and then the double-threaded screw 11 is passed through the square mounting hole 211, so that the rectangular block 113 on the double-threaded screw 11 is adapted and installed with the mounting hole 211, and the long threaded rod 111 is located above the support plate 21, and the short threaded rod 112 is located below the support plate 21. At the same time, a spring 31 is sleeved on the long threaded rod 111 and the spring 31 is tightened with a nut 32, and then the chuck 12 is installed on the short threaded rod 112.

[0041] Then, install the limit block 222 on the support frame 22, and place a fixed base 4 at the bottom of the support frame 22, install the rounded corner clamp 13 on the fixed base 4, and use the gasket 5 to adjust the height of the rounded corner clamp 13 so that the center of the rotating shaft 61 and the rounded corner clamp 13 are on the same horizontal line, ensuring that the rounded corner clamp 13, the chuck 12 and the limit block 222 are kept in the same straight line.

[0042] One end of the sample to be bent is placed in the chuck 12 and clamped with the chuck 12. The other end of the sample passes through the limit block 222 and is then clamped with the rounded corner clamp 13. The limit block 222 ensures that the clamping position of the sample is always consistent during the bending process, effectively preventing the sample from being offset or rotated. The long threaded rod 111 of the double-threaded screw 11 is connected with a spring 31 and a nut 32. By rotating the nut 32, the expansion and contraction deformation of the spring 31 can be easily adjusted, thereby realizing a quick and accurate adjustment of the tension of the sample.

[0043] Finally, the device is stably fixed on the rotating shaft 61 of the bending testing machine 6 through the connecting hole 221 on the support frame 22. After completing all the above steps and ensuring that all components are firmly installed, the device enters the test preparation state. When everything is ready, the power can be turned on to start the bending test of the sample.

[0044] The above are preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A double-headed screw with tension automatic bending device, used to be connected to the rotating shaft (61) of a bending test machine (6), characterized in that: The invention comprises a clamping mechanism (1) and a supporting mechanism (2), wherein the clamping mechanism (1) comprises a double-threaded screw (11), a clamp (12), and a rounded corner clamp (13) which are arranged in sequence from top to bottom, and the supporting mechanism (2) comprises a supporting plate (21) arranged between the double-threaded screw (11) and the clamp (12) and a supporting frame (22) for firmly connecting and supporting the supporting plate (21), and an elastic component (3) capable of adjusting the elastic deformation amount is arranged at the upper end of the double-threaded screw (11).

2. The double-headed screw with tension automatic bending device according to claim 1 is characterized in that: The elastic component (3) comprises a spring (31) sleeved on the upper end of the double-threaded screw (11) and a nut (32) abutting against the upper end of the spring (31).

3. The double-headed screw automatic bending device with tension according to claim 1 is characterized in that: One section of the double-threaded screw (11) is a long threaded rod (111), and the other section is a short threaded rod (112). A rectangular block (113) is provided between the long threaded rod (111) and the short threaded rod (112), and the cross section of the rectangular block (113) is square.

4. The double-headed screw automatic bending device with tension according to claim 1 is characterized in that: The support plate (21) is provided with a mounting hole (211) for mounting the double-threaded screw (11) and a fastening hole (212) for connecting the support frame (22).

5. The double-headed screw automatic bending device with tension according to claim 1 is characterized in that: A fixed base (4) is provided at the bottom of the fillet fixture (13).

6. The double-headed screw automatic bending device with tension according to claim 5 is characterized in that: A gasket (5) is provided between the fixed base (4) and the fillet clamp (13).

7. The double-headed screw automatic bending device with tension according to claim 1 is characterized in that: The support frame (22) is provided with a connection hole (221) for connecting with the rotating shaft (61) of the bending test machine (6).

8. The double-headed screw automatic bending device with tension according to claim 1 is characterized in that: The support frame (22) is provided with a limit block (222) for limiting the clamping position.

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