Stretching tester for stretching long workpiece
By introducing a servo motor-driven screw and a tension sensor into the tensile testing instrument, the problem of uneven tension during the tensile testing of long workpieces was solved, enabling precise tension control and stable clamping of long workpieces, and improving the accuracy and adaptability of the test.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING NAPU TESTING TECH CO LTD
- Filing Date
- 2025-05-27
- Publication Date
- 2026-05-15
AI Technical Summary
Existing tensile testing instruments may exhibit uneven tension distribution when stretching long workpieces, especially flexible workpieces, which affects the test results. Furthermore, the weight of the instrument itself also influences the results.
The design employs a tensioning mechanism and a clamping mechanism. A servo motor drives the screw to rotate, and combined with a tension sensor and a tension spring, it achieves precise tension control, ensuring stable clamping and tension monitoring of the workpiece during the tensioning process.
It enables accurate and reliable testing of long workpieces, adapts to testing requirements of different materials and specifications, and ensures the accuracy and stability of test results.
Smart Images
Figure CN224247475U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of testing equipment technology, specifically a tensile testing instrument for tensile testing of long workpieces. Background Technology
[0002] For example, a tensile testing instrument for stretching long workpieces, as disclosed in patent publication number CN216208115U, includes a base, a housing mounted on the base, a clamping device, and a driving device. The clamping device is used to clamp the workpiece for testing and includes a first clamp and a second clamp. The first clamp is fixed to the bottom of the housing. The driving device is used to drive the second clamp to rise and fall. The driving device includes a drive motor, a reduction device, a transmission device, and a ball screw. The ball screw includes a lead screw and a nut. Ball screws are provided on both sides of the housing. A fixing frame is provided between the two nuts. The fixing frame is used to fix the second clamp. The reduction device is used to increase the torque. The transmission device is used to transmit the power of the drive motor to the lead screw. It has the advantages of being able to stretch long workpieces.
[0003] However, during the use of the above-mentioned equipment, due to the setting of its internal clamping and driving devices, the tension of long workpieces, especially long flexible workpieces, may be unevenly distributed inside the workpiece during the stretching process, and its own weight will affect the stretching results. Therefore, in order to address this situation, we propose a more convenient and practical tensile testing instrument to meet the usage requirements. Utility Model Content
[0004] The purpose of this invention is to provide a tensile testing instrument for stretching long workpieces, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a tensile testing instrument for stretching long workpieces, comprising a base, a control button installed on one side of the bottom of the base, a display screen installed on the other side, a tensile mechanism provided at the center of the top of the base, the tensile mechanism comprising a support plate, a slot provided on one side of the support plate, a sliding frame slidably connected in the slot, a through hole provided at the center of the top of the support plate, a first screw rotatably connected in the through hole, the first screw and the sliding frame being threadedly connected, a servo motor installed on one side of the support plate, the output end of the servo motor being connected to the first screw, a tension control component provided at the top of the sliding frame, and a clamping mechanism provided on one side of the tensile mechanism.
[0006] Furthermore, a through hole is provided in the center of one side of the top of the sliding frame, and a sliding rod is slidably connected in the through hole. Telescopic rods are fixedly connected to both sides of the top of the sliding frame, and a connecting plate is fixedly connected to one end of the telescopic rod and the sliding rod.
[0007] Furthermore, the tension control assembly includes a mounting bracket and a sliding bracket connected together. The mounting bracket has through holes on both sides, and a second screw is rotatably connected inside the through holes. A sliding plate is threaded onto the outer wall of the second screw.
[0008] Furthermore, a tension spring is fixedly connected to one side of the sliding plate, and one end of the tension spring is connected to the sliding rod.
[0009] Furthermore, the clamping mechanism includes a fixing frame, a connecting block is fixedly connected to one side of the fixing frame, the connecting block and the slot opened in the connecting plate are adapted to each other, and a tension sensor is installed on the other side.
[0010] Furthermore, a through hole is provided on one side of the fixing frame, and a third screw is threaded into the through hole. One end of the third screw is fixedly connected to a rotating handle, and the other end is rotatably connected to a clamping block.
[0011] Compared with the prior art, the beneficial effects of this utility model are:
[0012] This tensile testing instrument for long workpieces, through the setup of a tensile mechanism and a clamping mechanism, first connects the workpiece to the clamping mechanism during use, then fixes it via a sliding rod and a telescopic rod. A servo motor drives the first screw to rotate, causing the sliding frame to move along the support plate to stretch the workpiece. During this process, a tension sensor monitors the workpiece tension. When tension fluctuates, the telescopic rod closes, and a motor on the mounting frame drives the second screw to rotate, causing the sliding plate to move, which in turn moves the tension spring and the sliding rod, providing tension to the workpiece. This device, through precise tension control, ensures the accuracy and reliability of the tensile test, and can meet the testing requirements of long workpieces of different materials and specifications. It is highly practical and suitable for widespread application.
[0013] Meanwhile, the clamping mechanism can provide a stable clamping force to prevent long workpieces from sliding or shaking during the stretching process, thus ensuring the accuracy of the test. 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 tensioning mechanism of this utility model;
[0016] Figure 3 This is a schematic diagram of the clamping mechanism of this utility model.
[0017] In the diagram: 1. Base; 2. Control button; 3. Display screen; 4. Tensioning mechanism; 401. Support plate; 402. Sliding frame; 403. First screw; 404. Servo motor; 405. Sliding rod; 406. Telescopic rod; 407. Connecting plate; 408. Mounting bracket; 409. Second screw; 410. Sliding plate; 411. Tension spring; 5. Clamping mechanism; 501. Fixing frame; 502. Connecting block; 503. Tension sensor; 504. Third screw; 505. Rotating handle; 506. Clamping block. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] Tensile testing equipment is required during the workpiece manufacturing process. The tensile testing equipment provided by this utility model is specifically designed for tensile testing of workpieces during the workpiece manufacturing process. Before using this equipment for tensile testing, it is necessary to ensure that the equipment is in good condition, all parts are firmly connected and there is no looseness. When clamping the workpiece, the appropriate clamping method and clamping force should be selected according to the size and shape of the workpiece. Before stretching, it should be ensured that the workpiece is completely fixed and the stretching direction is correct. The tensile force and workpiece elongation data on the display screen 3, as well as the operating status of the equipment, should be closely monitored.
[0020] like Figures 1-3 As shown, this utility model provides a technical solution: a tensile testing instrument for stretching long workpieces, including a base 1, a control button 2 installed on one side of the bottom of the base 1, a display screen 3 installed on the other side, a tensile mechanism 4 set at the top center of the base 1, the tensile mechanism 4 including a support plate 401, a slot is opened on one side of the support plate 401, a sliding frame 402 is slidably connected in the slot, a through hole is opened at the top center of the support plate 401, a first screw 403 is rotatably connected in the through hole, the first screw 403 and the sliding frame 402 are threadedly connected, a servo motor 404 is installed on one side of the support plate 401, the output end of the servo motor 404 is connected to the first screw 403, a tension control component is set at the top of the sliding frame 402, and a clamping mechanism 5 is set on one side of the tensile mechanism 4.
[0021] like Figure 2As shown, a through hole is provided in the center of one side of the top of the sliding frame 402, and a sliding rod 405 is slidably connected in the through hole. Telescopic rods 406 are fixedly connected to both sides of the top of the sliding frame 402. A connecting plate 407 is fixedly connected to one end of the telescopic rod 406 and the sliding rod 405. The tension control assembly includes a mounting frame 408, which is connected to the sliding frame 402. Through holes are provided on both sides of the mounting frame 408, and a second screw 409 is rotatably connected in the through holes. A sliding plate 410 is threadedly connected to the outer wall of the second screw 409. A tension spring 411 is fixedly connected to one side of the sliding plate 410, and one end of the tension spring 411 is connected to the sliding rod 405.
[0022] It should be noted that during use, the workpiece and clamping mechanism 5 are first connected, and then fixed by sliding rod 405 and telescopic rod 406. Then, servo motor 404 drives first screw 403 to rotate, causing sliding frame 402 to move along support plate 401 to stretch the workpiece. During this process, sensor monitors the tension of the workpiece. When the tension fluctuates, telescopic rod 406 closes, and motor on mounting frame 408 drives second screw 409 to rotate, causing sliding plate 410 to move, which in turn causes tension spring 411 and sliding rod 405 to move, providing tension to the workpiece. The stretching mechanism 4 can flexibly adjust the stretching distance and range according to long workpieces of different lengths and stretching requirements, and has strong versatility and adaptability.
[0023] like Figure 3 As shown, the clamping mechanism 5 includes a fixed frame 501. A connecting block 502 is fixedly connected to one side of the fixed frame 501. The connecting block 502 is adapted to the slot opened in the connecting plate 407. A tension sensor 503 is installed on the other side. A through hole is opened through one side of the fixed frame 501. A third screw 504 is threaded into the through hole. A rotating handle 505 is fixedly connected to one end of the third screw 504, and a clamping block 506 is rotatably connected to the other end.
[0024] It is important to note that during use, first insert the connecting block 502 into the slot in the connecting plate 407 to connect the fixing bracket 501 and the connecting plate 407. Then, place the workpiece to be tested on one side of the tension sensor 503. Next, manually operate the handle 505 to rotate the third screw 504, causing the clamping block 506 to clamp the workpiece. The clamping mechanism 5 provides a stable clamping force, preventing long workpieces from sliding or shaking during the stretching process and ensuring the accuracy of the test.
[0025] During use, firstly, the connecting block 502 is inserted into the slot opened in the connecting plate 407 to connect the fixing frame 501 and the connecting plate 407. Then, the workpiece to be tested is placed on one side of the tension sensor 503. Next, the handle 505 is manually operated to drive the third screw 504 to rotate, causing the clamping block 506 to clamp the workpiece. Then, it is fixed by the sliding rod 405 and the telescopic rod 406. Then, the servo motor 404 drives the first screw 403 to rotate, causing the sliding frame 402 to move along the support plate 401 to stretch the workpiece. During this process, the tension sensor 503 monitors the tension of the workpiece. When the tension fluctuates, the telescopic rod 406 closes, and the motor on the mounting frame 408 drives the second screw 409 to rotate, causing the sliding plate 410 to move, which in turn causes the tension spring 411 and the sliding rod 405 to move, providing tension to the workpiece. The result is displayed on the display screen 3. This device ensures the accuracy and reliability of the tensile test through precise tension control and can meet the testing requirements of long workpieces of different materials and specifications.
[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended embodiments and their equivalents.
Claims
1. A tensile testing instrument for tensile testing of long workpieces, comprising a base, characterized in that: A control button is installed on one side of the bottom of the base, and a display screen is installed on the other side. A tensioning mechanism is set at the center of the top of the base. The tensioning mechanism includes a support plate. A slot is opened on one side of the support plate, and a sliding frame is slidably connected in the slot. A through hole is opened at the center of the top of the support plate, and a first screw is rotatably connected in the through hole. The first screw and the sliding frame are threadedly connected. A servo motor is installed on one side of the support plate, and the output end of the servo motor is connected to the first screw. A tension control component is set on the top of the sliding frame. A clamping mechanism is set on one side of the tensioning mechanism.
2. The tensile testing instrument for long workpieces according to claim 1, characterized in that: A through hole is provided in the center of one side of the top of the sliding frame, and a sliding rod is slidably connected in the through hole. Telescopic rods are fixedly connected to both sides of the top of the sliding frame, and a connecting plate is fixedly connected to one end of the telescopic rod and the sliding rod.
3. A tensile testing instrument for tensile testing of long workpieces according to claim 1, characterized in that: The tension control assembly includes a mounting bracket and a sliding bracket connected together. The mounting bracket has through holes on both sides, and a second screw is rotatably connected in the through holes. A sliding plate is threadedly connected to the outer wall of the second screw.
4. A tensile testing instrument for tensile testing of long workpieces according to claim 3, characterized in that: A tension spring is fixedly connected to one side of the sliding plate, and one end of the tension spring is connected to the sliding rod.
5. A tensile testing instrument for tensile testing of long workpieces according to claim 1, characterized in that: The clamping mechanism includes a fixed frame, a connecting block is fixedly connected to one side of the fixed frame, the connecting block and the slot opened in the connecting plate are adapted to each other, and a tension sensor is installed on the other side.
6. A tensile testing instrument for tensile testing of long workpieces according to claim 5, characterized in that: The fixing frame has a through hole on one side, and a third screw is threaded into the through hole. One end of the third screw is fixedly connected to a rotating handle, and the other end is rotatably connected to a clamping block.