A force sensor based testing device

Abstract

The utility model discloses a kind of test device based on force sensor, it includes positioning test mechanism, compaction mechanism, calibration mechanism;Positioning test mechanism includes test plate, test seat being set on test plate, upper and lower elastic floating setting carrier on test seat and positioning assembly;Compaction mechanism includes first drive module, the support frame that is driven by first drive module and moves up and down, first force sensor being detachably set on support frame, first pressure head being connected at the bottom of first force sensor and compaction module being slid up and down and set on support frame;Calibration mechanism includes second force sensor, first driving part for driving second force sensor to move and second pressure head being set at the top of second force sensor.The utility model solves the problems of low test accuracy, easy to damage product, low efficiency and poor versatility in the prior art, realizes high-precision, easy-to-damage components and devices for efficient, safe, accurate and highly adaptable automated testing.

Description

Technical Field

[0001] This utility model belongs to the field of component testing technology, and in particular relates to a testing device based on a force sensor. Background Technology

[0002] When testing a chip, the upper surface of the chip needs to be pressed with a set force, and the pins and probes on the bottom of the chip need to make contact to conduct electricity for testing. Traditional testing relies on manual addition of weights or hydraulic devices, which takes a long time and has low accuracy. Using a force sensor to press the chip before testing can improve the accuracy of the test.

[0003] In the prior art, Chinese Patent Publication No. CN214471508U discloses an automatic calibration platform for pressure sensors, which includes a machine base, a three-axis linear module, a calibration module, and a fixture module. The three-axis linear module and the fixture module are both mounted on the machine base, and the calibration module is located above the fixture module. The calibration module includes a mounting plate, a voice coil motor, a first pressure sensor, and a second pressure sensor. The voice coil motor is vertically mounted on the mounting plate, which is located at the movable end of the three-axis linear module. The first pressure sensor is drive-connected to the voice coil motor, and the second pressure sensor is mounted on the fixture module, with the first and second pressure sensors positioned opposite each other. In this design, the product is directly placed on the carrier plate. However, the product positioning is not disclosed, and the contact points press down on the product for testing, resulting in rigid contact. This is problematic because the chips being tested are fragile; rigid contact could easily damage the product and / or the carrier plate, reducing the test yield and increasing testing costs.

[0004] Therefore, it is necessary to provide a force sensor-based testing device to solve the above-mentioned technical problems. Utility Model Content

[0005] The main purpose of this invention is to provide a testing device based on a force sensor, which solves the problems of low testing accuracy, easy damage to products, low efficiency and poor versatility in the prior art, and realizes efficient, safe, accurate and highly adaptable automated testing of high-precision and easily damaged components.

[0006] This utility model achieves the above-mentioned objective through the following technical solution: a testing device based on a force sensor, comprising: A positioning test mechanism includes a test plate, a test seat mounted on the test plate, a carrier elastically floating on the test seat, and a positioning component mounted on one side of the carrier. A clamping mechanism is disposed above the positioning test mechanism. The clamping mechanism includes a first drive module, a support frame that is driven by the first drive module to move up and down, a first force sensor that is detachably disposed on the support frame, a first pressure head connected to the bottom of the first force sensor, and a clamping module that is slidably disposed up and down on the support frame. A calibration mechanism is disposed below one side of the clamping mechanism. The calibration mechanism includes a second force sensor, a first driving member that drives the second force sensor to move directly below the first force sensor, and a second pressure head disposed on top of the second force sensor.

[0007] Furthermore, several positioning testing mechanisms are arranged in a straight line along the first direction and are all mounted on the first mounting base; several clamping mechanisms are arranged in a straight line along the first direction and are all mounted on the second mounting base; a detection sensor is mounted on the first mounting base; one calibration mechanism is provided, and one calibration mechanism is moved along the first direction by the second driving module.

[0008] Furthermore, the test plate is provided with an upwardly extending probe group, and both the test base and the carrier are provided with a group of clearance holes for the probe group to pass through.

[0009] Furthermore, the test base is provided with a mounting groove for mounting the carrier, a plurality of first springs are connected between the carrier and the test, the test base is provided with a plurality of limiting members and a plurality of guide rods for limiting the carrier, and the edge of the carrier is provided with a plurality of limiting notches that cooperate with the limiting members.

[0010] Furthermore, the carrier has a slot extending from the center to one corner. The slot has two vertically extending first and second slot walls that form an angle. The first slot wall has a first positioning part on one side of the product at the end near the center of the carrier, and the second slot wall has a second positioning part on the other side of the product at the end near the center of the carrier. Both the first and second positioning parts are contoured to the side of the product.

[0011] Furthermore, the positioning component includes a second driving member and a positioning rod that is driven by the second driving member to extend into the groove. The front end of the positioning rod has a notch to form two positioning parts, namely a third positioning part and a fourth positioning part. The third positioning part and the fourth positioning part are both configured to conform to the side of the product.

[0012] Furthermore, the other end of the positioning rod is detachably mounted on the movable block, the movable block is movably mounted on the support base via a slide rail slider, the movable block is driven to move by the second driving member, the support base is provided with a first limiting block on one side of the movable block and a second limiting block on the other side of the movable block, and a second spring is connected between the movable block and the first limiting block.

[0013] Furthermore, the clamping module includes a sliding block, a clamping block detachably disposed at the bottom of the sliding block and extending horizontally, and a third spring connected at one end to the sliding block, the upper end of the third spring being connected to the bottom of the support frame.

[0014] Furthermore, the clamping block has a relief hole in the middle to avoid the first pressure head, and a relief notch on the bottom surface to avoid the positioning rod. The bottom surface of the clamping block is contoured to the upper surface of the carrier.

[0015] Furthermore, the output shaft end of the first drive unit is provided with a mounting plate, and the second force sensor is detachably mounted on the mounting plate. The first drive module includes a servo motor and an electric cylinder connected below the servo motor.

[0016] Compared with existing technologies, the beneficial effects of this force sensor-based testing device are as follows: through precise force sensor control, a unique elastic buffer system, a modular and replaceable design, and a shared automatic calibration scheme, it successfully solves the problems of low testing accuracy, easy damage to products, low efficiency, and poor versatility in existing technologies. It achieves efficient, safe, accurate, and highly adaptable automated testing of high-precision, easily damaged components such as chips. Specifically: 1. Advantages of high precision and high efficiency: Utilizing a primary force sensor for clamping, compared to traditional manual weights or hydraulic devices, it can apply precisely set forces to the product, ensuring accurate force control, stable testing conditions, and accurate test results; It features an independent calibration mechanism that can automatically calibrate the working force sensor (primary force sensor) periodically or as needed, effectively compensating for measurement deviations caused by high-frequency use and ensuring long-term testing accuracy and reliability; By setting up multiple (e.g., eight) positioning and clamping mechanisms that can work collaboratively, it enables simultaneous testing of multiple products, and parallel testing greatly improves overall testing efficiency; 2. Excellent protection with multiple elastic buffer designs to effectively prevent product damage: The carrier floats elastically, connected to the test seat via a first spring, creating vertical elastic floating; the clamping mechanism makes elastic contact, connected to the support frame via a third spring, allowing it to elastically clamp the carrier; the positioning component provides elastic positioning, driven by a second spring, allowing it to elastically clamp the product's side. These three elastic designs work together to avoid rigid impacts and hard contacts between the pressure head and the product, the clamping block and the carrier, and the positioning part and the product. This effectively prevents fragile products from being damaged during positioning and clamping due to stress concentration or overload, thereby improving test yield and reducing costs. 3. High versatility and flexibility: For products of different shapes and sizes, corresponding carriers can be replaced. When changing carriers, the matching clamping blocks can be replaced simultaneously. Both the first and second force sensors are detachable, making it easy to replace sensors with different ranges to adapt to different test force requirements. The test board can be shared by multiple products or configured independently. The test board configuration is flexible, realizing a modular and replaceable design to adapt to different test scenarios. Through the cooperation of the contour positioning part on the carrier and the elastic contour positioning part on the positioning rod, the product is accurately positioned from four directions. The positioning is accurate and reliable, restricting horizontal movement and ensuring the alignment accuracy between the probe and the product pins. 4. Structural optimization and cost control: Multiple clamping mechanisms share a movable calibration mechanism, which is moved under any clamping mechanism for calibration via the second drive module. The shared calibration mechanism significantly reduces the number of standard sensors (second force sensor) and drive components while ensuring calibration functionality, simplifying the structure and reducing hardware costs. The first drive module uses a servo motor in conjunction with an electric cylinder to provide high-precision, high-efficiency, and low-backlash linear motion, further ensuring the control accuracy of the clamping force. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the force sensor-based testing device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the positioning test mechanism, clamping mechanism, and calibration mechanism in an embodiment of this utility model; Figure 3 This is a schematic diagram of the pressing mechanism according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the positioning test mechanism according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the test stand and carrier according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the test stand in an embodiment of the present invention; Figure 7This is a schematic diagram of the positioning component in an embodiment of the present utility model; The numbers in the diagram represent: 100 - Force sensor-based testing device; 1-Positioning test mechanism, 11-Test plate, 111-Probe group, 12-Test seat, 121-Avoiding hole group, 122-Limiting component, 123-Guide rod, 124-First spring, 125-Mounting groove, 13-Carrier, 131-Cavity, 1311-First groove wall, 1312-Second groove wall, 1313-First positioning part, 1314-Second positioning part, 132-Limiting notch, 14-Positioning assembly, 141-Second driving component, 142-Positioning rod, 143-Third positioning part, 144-Fourth positioning part, 145-Moving block, 146-First limiting block, 147-Second limiting block, 148-Support seat, 149-Second spring; 2-Clamping mechanism, 21-First drive module, 211-Servo motor, 212-Electric cylinder, 22-First force sensor, 23-First pressure head, 24-Clamping module, 241-Sliding block, 242-Clamping block, 244-Allowing hole, 245-Screw, 246-Allowing notch, 247-Guide post, 25-Support frame, 251-Slide rail, 252-Slider; 3-Calibration mechanism, 31-First driving component, 32-Second force sensor, 33-Second pressure head, 34-Second driving module, 35-Support plate, 36-Mounting plate; 4-First mounting base; 5-Second mounting base; 6-Detection sensor. Detailed Implementation

[0018] Please refer to Figures 1-7 This embodiment is a testing device 100 based on a force sensor, which includes: The positioning test mechanism 1 includes a test plate 11, a test seat 12 disposed on the test plate 11, a carrier 13 elastically floating on the test seat 12, and a positioning component 14 disposed on one side of the carrier 13 and positioning the product on the carrier 13. The clamping mechanism 2 is located directly above the positioning test mechanism 1. The clamping mechanism 2 includes a first drive module 21, a support frame 25 driven by the first drive module 21 to move up and down, a first force sensor 22 detachably mounted on the support frame 25, a first pressure head 23 connected to the bottom of the first force sensor 22 and pressed against the product, and a clamping module 24 slidably mounted on the support frame 25 and elastically pressed against the carrier 13. The calibration mechanism 3 is located below one side of the clamping mechanism 2. The calibration mechanism 3 includes a second force sensor 32, a first driving member 31 that drives the second force sensor 32 to move directly below the first force sensor 22, and a second pressure head 33 located on top of the second force sensor 32.

[0019] In this embodiment, to simultaneously test multiple products, eight positioning test mechanisms 1 are arranged in a straight line along a first direction. All eight positioning test mechanisms 1 are mounted on a first mounting base 4. Above the eight positioning test mechanisms 1, eight clamping mechanisms 2 are arranged in a straight line along the first direction. All eight clamping mechanisms 2 are mounted on a second mounting base 5. The positioning test mechanisms 1 and clamping mechanisms 2 are in a one-to-one correspondence, allowing for the testing of eight products at a time, thus improving testing efficiency. When testing eight products together, they can share a single test plate 11, simplifying the structure. Alternatively, four products can share a single test plate 11, or eight test plates can be used separately. This is determined based on the actual testing situation and is not limited here. A detection sensor 6 is provided on the first mounting base 4 to detect whether a product is inside the carrier 13. A positioning component 14 is mounted on the first mounting base 4. Because the first force sensor 22 of the clamping mechanism 2 may deviate after high-frequency testing, a calibration mechanism 3 is provided to calibrate the first force sensor 22. However, deviations may only occur after hundreds or thousands of uses. Therefore, a single calibration mechanism 3 can be used for calibration after hundreds or thousands of tests. One calibration mechanism 3 can calibrate the first force sensors 22 on all clamping mechanisms 2. The calibration mechanism 3 is moved along a first direction by the second drive module 34. The calibration mechanism 3 is located at the movable end of the second drive module 34 via a support plate 35. The second drive module 34 can drive the calibration mechanism 3 from one end of the clamping mechanism 2 to the other end of the clamping mechanism 2, thereby calibrating the first force sensors 22 on all clamping mechanisms 2. The first direction can be the X direction, the Y direction, or other directions, depending on the actual working scenario, and is not limited here. Therefore, one calibration mechanism 3 can calibrate the first force sensors 22 on all clamping mechanisms 2, which not only achieves the calibration action but also simplifies the structure and reduces costs.

[0020] The calibration principle is as follows: The second drive module 34 drives the support plate 35 to move, causing the second force sensor 32 to move directly below the first force sensor 22. At this time, the first pressure head 23 and the second pressure head 33 are vertically opposite each other. The first drive module 21 drives the support frame 25 to move the first force sensor 22 downward, so that the first pressure head 23 presses against the second pressure head 33. When the two pressure heads press against each other, according to Newton's third law, the interaction forces between them are equal in magnitude and opposite in direction. The second force sensor 32 is the standard sensor, and the first force sensor 22 is the working sensor. Under the pressing state, the forces acting on the standard sensor and the working sensor are numerically equal. Therefore, we can establish a relationship: the reading of the standard sensor (true value) = the reading of the working sensor to be calibrated (measured value). By comparing these two readings, the error of the working sensor can be calculated. Then, the data is analyzed and modeled to obtain the calibration formula, thus completing the calibration of the first sensor 22. After that, the raw data read by the first sensor 22 can be corrected by the calibration formula to obtain measurement results that are closer to the true value.

[0021] In other embodiments, the number of positioning test mechanism 1 and clamping mechanism 2 can be set according to the actual number of products to be tested. Therefore, the number of positioning test mechanism 1 and clamping mechanism 2 is not limited here and can be set according to the actual situation.

[0022] The test board 11 is provided with an upwardly extending probe group 111. The test base 12 and the carrier 13 are both provided with a clearance hole group 121 for the probe group 111 to pass through, so that the probe group 111 can make contact with the pins on the back of the product to conduct electrical tests.

[0023] The test base 12 is provided with a mounting groove 125 for mounting the carrier 13. Several first springs 124 connect the carrier 13 to the test base 12, allowing the carrier 13 to elastically float up and down on the test base 12. The first springs 124 are evenly distributed horizontally and vertically within the mounting groove 125, ensuring the stability of the carrier 13's vertical movement. The test base 12 is provided with several limiting members 122 and several guide rods 123 to limit the movement of the carrier 13. Several limiting notches 132 are provided on the edge of the carrier 13 to cooperate with the limiting members 122. In the initial state, the limiting notches 132 abut against the limiting members 122, thereby limiting the carrier 13. To ensure the stability of the carrier 13's vertical movement, the test base 12 is provided with several guide rods 123, or the first springs 124 are wound around the outer periphery of the guide rods 123. The carrier 13 is replaceable; if testing products with different structures, the corresponding carrier 13 can be replaced. The test stand 12 is also detachably mounted on the test plate 11 via fasteners, or the carrier and test stand 12 can be directly replaced to adapt to products with different structures or sizes.

[0024] The carrier 13 has a slot 131 extending from the center to one corner. The slot 131 has two vertically extending first slot walls 1311 and second slot walls 1312 forming an angle. The first slot wall 1311 has a first positioning part 1313 on one side of the product at the end near the center of the carrier 13, and the second slot wall 1312 has a second positioning part 1314 on the other side of the product at the end near the center of the carrier 13. The first positioning part 1313 and the second positioning part 1314 are configured to conform to the side of the product, and the first positioning part 1313 and the second positioning part 1314 respectively position the two adjacent sides of the product.

[0025] The positioning component 14 includes a second driving member 141 and a positioning rod 142 driven by the second driving member 141 to extend into the slot 131. The front end of the positioning rod 142 is provided with a notch to form two positioning parts, namely a third positioning part 143 and a fourth positioning part 144. The third positioning part 143 and the fourth positioning part 144 are configured to conform to the side of the product. The third positioning part 143 and the fourth positioning part 144 are respectively positioned to the other two adjacent sides of the product.

[0026] To avoid rigid connection between the third positioning part 143 and the fourth positioning part 144 of the positioning rod 142 and the product, the other end of the positioning rod 142 is detachably mounted on the moving block 145. The moving block 145 is movably mounted on the support base 148 via a slide rail slider. The moving block 145 is driven by the second driving member 141 to move. The support base 148 has a first limiting block 146 on one side of the moving block 145 and a second limiting block 147 on the other side of the moving block 145. The moving block 145 is connected to the first limiting block 146 by a second limiting block 147. When the output shaft of the second drive member 141 extends, the moving block 145 moves toward the first limit block 146, and the second spring 149 is compressed. At this time, the positioning rod 142 moves away from the first positioning part 1313 and the second positioning part 1314 to facilitate the placement of the product. Then, the output shaft of the second drive member 141 retracts, and the second spring 149 extends, causing the moving block 145 to move toward the second limit block 147. The third positioning part 143 and the fourth positioning part 144 of the positioning rod 142 are elastically pressed against the side of the product, which can prevent the product from being crushed when positioning it.

[0027] In this embodiment, the product being tested is a chip or a pressure sensor, and the chip or pressure sensor is square. The first positioning part 1313, the second positioning part 1314, the third positioning part 143, and the fourth positioning part 144 are respectively positioned on the four sides of the product, jointly restricting the horizontal movement of the product. Therefore, the included angle between the first positioning part 1313 and the second positioning part 1314 is 90°, and the included angle between the third positioning part 143 and the fourth positioning part 144 is also 90°. In other embodiments, other products can be tested, and the structure and included angle of the first positioning part 1313 and the second positioning part 1314, and the third positioning part 143 and the fourth positioning part 144 can be set according to the actual structure of the product, without limitation. For example, if the product being tested is a cylinder, then the first positioning part 1313, the second positioning part 1314, the third positioning part 143, and the fourth positioning part 144 are arc-shaped contoured structures, set to conform to the shape of the product.

[0028] The clamping module 24 includes a sliding block 241, a horizontally extending clamping block 242 detachably disposed at the bottom of the sliding block 241, and a third spring connected at one end to the sliding block 241. The upper end of the third spring is connected to the bottom of the support frame 25. To ensure the stability of the sliding block 241's vertical movement, an upwardly extending guide post 247 is fixed on the sliding block 241. The upper end of the guide post 247 is inserted into the bottom of the support frame 25, and the upper end of the guide post 247 can move up and down at the bottom of the support frame 25. The bottom of the support frame 25 is provided with a guide hole for the guide post to move up and down, so as to ensure the stability of the sliding block 241's vertical movement. A vertically extending slide rail 251 is provided on the side of the support frame 25, and the sliding block 241 is slidably disposed on the slide rail 251 via a slider 252. The clamping block 242 has a clearance hole 244 in the middle to allow the first pressure head 23 to press firmly onto the product when the clamping block 242 is pressed onto the carrier 13. The bottom surface of the clamping block 242 has a clearance notch 246 to allow the positioning rod 142 to be moved. The bottom surface of the clamping block 242 is contoured to the upper surface of the carrier 13 to ensure precise pressing against the carrier surface and prevent the carrier 13 from tilting. The clamping block 242 is detachably connected to the sliding block 241 by screws 245. When the carrier 13 is changed, the corresponding clamping block 242 can be replaced, allowing testing of different products.

[0029] The first force sensor 22 is detachably mounted on the support frame 25 via fasteners; a mounting plate 36 is provided at the output shaft end of the first drive component 31, and the second force sensor 32 is detachably mounted on the mounting plate 36. Both the first force sensor 22 and the second force sensor 32 are detachably mounted. For example, when multiple different ranges of force need to be applied, force sensors with different ranges can be replaced accordingly, adapting to various testing scenarios and improving the versatility of the testing device. In this embodiment, the fasteners are bolts, screws, or pins, etc.

[0030] The first drive module 21 includes a servo motor 211 and an electric cylinder 212 connected below the servo motor 211. The servo motor 211 is responsible for providing precise and controllable rotary motion, and the electric cylinder 212 is responsible for accurately converting the rotary motion of the servo motor 211 into linear motion. The combination of the two creates an ideal linear power source, which constitutes a high-precision, programmable linear motion actuator with a compact structure, high rigidity, minimal backlash, high transmission efficiency, and the highest precision. It can also avoid errors caused by intermediate transmission links.

[0031] When the force sensor-based testing device 100 provided in this solution is applied, when the output shaft of the second driving member 141 extends, it causes the moving block 145 to move towards the first limiting block 146, and the second spring 149 is compressed. At this time, the positioning rod 142 moves away from the first positioning part 1313 and the second positioning part 1314, and the product to be tested is placed in. Then, the output shaft of the second driving member 141 retracts, and the second spring 149 extends, causing the moving block 145 to move towards the second limiting block 147. The third positioning part 143 and the fourth positioning part 144 of the positioning rod 142 elastically press against the adjacent two sides of the product, and the other adjacent two sides of the product abut against the first positioning part 1313 and the second positioning part 1314, thereby achieving horizontal limiting of the product and restricting its movement in the horizontal direction. The first driving module 21 drives the support frame 25 to drive the first force sensor. Sensor 22, first pressure head 23, and clamping module 24 move downwards. The clamping block 242 of the clamping module 24 first contacts the carrier 13, and the first spring 124 is compressed. The first pressure head 23 presses against the upper surface of the product. At this time, the first spring 124 is also further compressed and stores energy. The first spring 124 has a tendency to stretch, causing the clamping block 242 to float upward elastically. The carrier 13 also has a tendency to float up and down elastically, preventing the first pressure head 23 from damaging the product. Therefore, when the first pressure head 23 presses against the product surface, the carrier 13 always has a tendency to float up and down elastically, which can prevent damage to the product and / or the carrier 13. When the first pressure head 23 presses, the first force sensor 22 synchronously applies the set force. The probe group 111 on the test board 11 contacts the product and conducts electrical connection for testing. Eight products are tested simultaneously, which improves the testing efficiency.

[0032] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A testing device based on a force sensor, characterized in that, It includes: A positioning test mechanism includes a test plate, a test seat mounted on the test plate, a carrier elastically floating on the test seat, and a positioning component mounted on one side of the carrier. A clamping mechanism is disposed above the positioning test mechanism. The clamping mechanism includes a first drive module, a support frame that is driven by the first drive module to move up and down, a first force sensor that is detachably disposed on the support frame, a first pressure head connected to the bottom of the first force sensor, and a clamping module that is slidably disposed up and down on the support frame. A calibration mechanism is disposed below one side of the clamping mechanism. The calibration mechanism includes a second force sensor, a first driving member that drives the second force sensor to move directly below the first force sensor, and a second pressure head disposed on top of the second force sensor.

2. The testing device based on a force sensor as described in claim 1, characterized in that: The positioning testing mechanism is arranged in a straight line along the first direction and is all mounted on the first mounting base. The clamping mechanism is arranged in a straight line along the first direction and is all mounted on the second mounting base. The first mounting base is provided with a detection sensor. The calibration mechanism is provided with one unit, and the calibration mechanism is moved along the first direction by the second driving module.

3. The testing device based on a force sensor as described in claim 1, characterized in that: The test plate is provided with an upwardly extending probe group, and both the test base and the carrier are provided with a group of clearance holes for the probe group to pass through.

4. The testing device based on a force sensor as described in claim 1, characterized in that: The test base is provided with a mounting groove for mounting the carrier. Several first springs connect the carrier and the test. The test base is provided with several limiting members and several guide rods for limiting the carrier. Several limiting notches that cooperate with the limiting members are provided on the edge of the carrier.

5. The testing device based on a force sensor as described in claim 1, characterized in that: The carrier has a slot extending from the center to one corner. The slot has two vertically extending first and second slot walls that form an angle. The first slot wall has a first positioning part on one side of the product at the end near the center of the carrier, and the second slot wall has a second positioning part on the other side of the product at the end near the center of the carrier. Both the first and second positioning parts are contoured to the side of the product.

6. The testing device based on a force sensor as described in claim 5, characterized in that: The positioning component includes a second driving member and a positioning rod that is driven by the second driving member to extend into the slot. The front end of the positioning rod has a notch to form two positioning parts, namely a third positioning part and a fourth positioning part. The third positioning part and the fourth positioning part are both configured to conform to the side of the product.

7. The testing device based on a force sensor as described in claim 6, characterized in that: The other end of the positioning rod is detachably mounted on the movable block. The movable block is movably mounted on the support base via a slide rail slider. The movable block is driven to move by the second driving member. The support base is provided with a first limiting block on one side of the movable block and a second limiting block on the other side of the movable block. A second spring connects the movable block and the first limiting block.

8. The testing device based on a force sensor as described in claim 1, characterized in that: The clamping module includes a sliding block, a clamping block detachably disposed at the bottom of the sliding block and extending horizontally, and a third spring connected at one end to the sliding block, the upper end of the third spring being connected to the bottom of the support frame.

9. The testing device based on a force sensor as described in claim 8, characterized in that: The clamping block has a clearance hole in the middle to avoid the first pressure head, and a clearance notch on the bottom surface to avoid the positioning rod. The bottom surface of the clamping block is contoured to the upper surface of the carrier.

10. The testing device based on a force sensor as described in claim 1, characterized in that: The first drive unit has a mounting plate at its output shaft end, and the second force sensor is detachably mounted on the mounting plate. The first drive module includes a servo motor and an electric cylinder connected below the servo motor.

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