Linear displacement sensor testing device with rapid positioning function

Abstract

The invention discloses a linear displacement sensor testing device with a rapid positioning function, and relates to the technical field of testing equipment.The testing device comprises a first mounting plate, a first rack is mounted on the upper end face of the first mounting plate, a feeding mechanism is mounted on the upper end face of the first mounting plate, and a pressurizing box is mounted on one side of the feeding mechanism; the plate feeding mechanism is installed on one side of the pressurizing box, the clamping mechanism is installed on one side of the plate feeding mechanism, the marking mechanism is installed in the pressurizing box, the discharging mechanism is installed on one side of the pressurizing box, the material changing mechanism is installed on the lower side of the mounting plate, and the feeding mechanism is used for conveying PC plates into the pressurizing box. The marking mechanism is used for marking the deformation quantity of the sensor, the material changing mechanism is used for changing different sensors, through integration of multiple functional modules, efficient and accurate testing of the deformation quantity of the sensor is achieved, and the testing efficiency and accuracy are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of testing equipment, and specifically to a testing device for a linear displacement sensor with a fast positioning function. Background Art

[0002] With the development of industrial automation and precision detection technology, the application of linear displacement sensors in fields such as machining, robot control, and quality inspection has gradually increased. They are widely used to measure the displacement, position, and accuracy of objects. As a high-precision linear displacement sensor, a laser sensor is used to measure the micro-displacement of an object, especially suitable for scenarios that require non-contact and high-resolution measurement.

[0003] However, during compressive testing, the linear displacement sensor may undergo minor deformations, which are usually difficult to detect with the naked eye. Traditional methods typically rely on contact measurement methods to detect deformations. However, these techniques have limitations in detecting minor deformations, especially in cases where the deformations are complex. They are not sensitive enough to minor deformations and have limitations in accuracy. Therefore, the current technology has certain limitations in precisely measuring the minor deformations of sensors. Summary of the Invention

[0004] The purpose of the present invention is to provide a testing device for a linear displacement sensor with a fast positioning function to solve the problems raised in the prior art.

[0005] To achieve the above object, the present invention provides the following technical solution: A testing device for a linear displacement sensor with a quick positioning function. The testing device includes a first mounting plate. Four brackets are installed at the four corners of the lower end face of the first mounting plate. A first frame is installed on the upper end face of the first mounting plate. A feeding mechanism is installed on the upper end face of the first mounting plate. A pressurizing box is installed on one side of the feeding mechanism. A plate feeding mechanism is installed on one side of the pressurizing box. A clamping mechanism is installed on one side of the plate feeding mechanism. A marking mechanism is installed inside the pressurizing box. A discharging mechanism is installed on one side of the pressurizing box. A material changing mechanism is installed on the lower side of the first mounting plate. The first mounting plate is the support platform for the entire testing device, providing a stable structural support to ensure that the testing device does not displace or vibrate during operation. The brackets are used to support and stabilize the testing device. The feeding mechanism is responsible for feeding the PC board into the pressurizing box. The plate feeding mechanism is responsible for replacing the PC board used during the testing process. The function of the clamping mechanism is to clamp the linear displacement sensor to be detected to ensure stability during the testing process. The function of the marking mechanism is to mark the small deformation amount of the linear displacement sensor during the pressurizing process, leaving a specific mark on the PC board so as to analyze the deformation amount of the linear displacement sensor during the subsequent detection process. The discharging mechanism is responsible for sending out the PC board after marking from the pressurizing box. The material changing mechanism is responsible for automatically replacing different linear displacement sensors after the testing is completed, ensuring the quick replacement of the linear displacement sensor during the testing process, reducing the testing pause time, and improving the testing efficiency.

[0006] The feeding mechanism includes a second mounting plate. The second mounting plate is located on the upper end face of the first mounting plate. A first motor is installed on one side of the second mounting plate. A first rotating shaft is installed on the output shaft of the first motor. A first conveyor belt is sleeved outside the first rotating shaft. The PC board is placed on the first conveyor belt. The second mounting plate provides support for the feeding mechanism. The first motor is the power source of the feeding mechanism, driving the first conveyor belt to convey the PC board. The PC board has strong compressive resistance and stability, and can withstand high pressure to maintain the stability of the deformation record.

[0007] The plate feeding mechanism includes a motor 2, which is located on one side of the outer wall of the pressurized box, a gear 1 is installed on the output shaft of the motor 2, a gear 2 is installed on one side of the gear 1, the gear 2 is located on the outer wall of the pressurized box, a conveyor belt 2 is sleeved on the outer side of the gear 1 and the gear 2, the gear 1 and the gear 2 are meshed with the conveyor belt 2, a mounting plate 3 is installed on the conveyor belt 2, the mounting plate 3 is an L-shaped folding plate, a frame 2 is installed on the mounting plate 3, a motor 3 is installed on one side of the frame 2, a gear 3 is installed on the output shaft of the motor 3, a groove is opened on the mounting plate 3, racks are installed on both sides of the gear 3, the gear 3 is meshed with the rack, a through groove is opened in the arrangement groove of the mounting plate 3, a clamping plate is installed on one side of the rack, and the clamping plate is used to clamp the PC board. Motor 2 is the power source of the board feeding mechanism, driving conveyor belt 2 to rotate and transport the PC board. Mounting plate 3 provides support for other components of the board feeding mechanism. Motor 3 is used to drive the rack to move, accurately grasp and place the PC board, and ensure the smooth progress of the PC board replacement process.

[0008] The pressurized box has through grooves on both sides, and the through grooves are respectively located on one side of the feeding mechanism and the discharging mechanism. The pressurized box has grooves on both sides. The upper end surface of the pressurized box is installed with a cylinder 1, and a push rod 1 is installed on the lower side of the cylinder. A baffle 1 is installed on the lower side of the push rod. The push rod 1 and the baffle 1 are located in the groove, and a blade is installed on the lower side of the baffle. A cylinder 2 is installed on one side of the cylinder 1, and the cylinder 2 is located on the upper end surface of the pressurized box. A push rod 2 is installed on the lower side of the cylinder 2, and a baffle 2 is installed on the lower side of the push rod 2. The upper end surface of the pressurized box has an installation groove, and a glass plate is arranged in the installation groove. A pressure regulating valve is arranged on one side of the pressurized box. The function of the cylinder 1 is to drive the baffle 1 and the blade to move by pushing the push rod 1, and the function of the cylinder 2 is to drive the baffle 2 to move by pushing the push rod 2, so as to realize the sealing of the pressurized box and the segmentation of the PC board. The glass plate is convenient for the visual sensor to detect the deformation of the linear displacement sensor, and the pressure regulating valve is used to control and adjust the pressure inside the pressurized box.

[0009] The clamping mechanism includes a cylinder 3, which is located on one side of the outer wall of the pressurized box, a push rod 3 is installed on one side of the cylinder 3, a mounting plate 4 is installed on one side of the push rod 3, multiple groups of springs 1 are installed on the mounting plate 4, a fixing plate is installed on one side of the spring 1, and a rubber pad is installed on one side of the fixing plate. Cylinder 3 is used to drive the fixing plate to move and clamp the linear displacement sensor to be tested. Spring 1 provides a buffering effect for the clamping mechanism, which is convenient for clamping linear displacement sensors of different sizes. The rubber pad directly clamps and fixes the linear displacement sensor to prevent it from being damaged during the test and increase the stability of the clamping.

[0010] The marking mechanism includes a first slide rail which is located on the inner wall of the pressurizing box. A first slide rail motor is installed on one side of the first slide rail, and the first slide rail motor is located on the outer wall of the pressurizing box. A first slider is arranged on the first slide rail, and the first slider is slidably connected to the first slide rail. A second slide rail is arranged below the first slider, and a telescopic block is arranged on the second slide rail. The telescopic block is slidably connected to the second slide rail, and a marker pen is installed below the telescopic block. The first slide rail motor provides power for the movement of the marker pen on the first slide rail and the second slide rail. The telescopic block is used to drive the up and down movement of the marker pen, and the marker pen is used to move along the linear displacement sensor to mark its deformation amount.

[0011] The material changing mechanism includes an installation bin which is located on the lower end face of the first installation plate. A moving plate is installed inside the installation bin, and a toothed groove is formed on the moving plate. A fourth motor is installed on the inner wall of the installation bin, and a fourth gear is installed on the output shaft of the fourth motor. The fourth gear is meshed with the toothed groove on the moving plate. A support plate is installed above the moving plate. A through groove is formed on one side of the installation bin, and installation cylinders are installed on both sides of the inner wall of the installation bin. An electromagnet is installed inside the installation cylinder, a second spring is installed on one side of the electromagnet, a moving block is installed on one side of the second spring, and fixing grooves are formed on both sides of the moving plate. The installation bin provides a support and fixing basis for the material changing mechanism. The support plate is used to place the linear displacement sensor to be measured. The fourth motor is used to drive the moving plate to move, so as to drive the linear displacement sensor on the support plate to move. The installation cylinder provides a support and installation position for the electromagnet. The function of the electromagnet is to attract the moving block through magnetic force, so as to realize the clamping and release of the moving plate.

[0012] The discharging mechanism includes a fifth installation plate which is located on the upper end face of the first installation plate. A fifth motor is installed on one side of the fifth installation plate, a second rotating shaft is installed on the output shaft of the fifth motor, and a third conveyor belt is sleeved on the second rotating shaft. The fifth installation plate is a support platform for the discharging mechanism to ensure the stable operation of each component. The fifth motor is the power source of the discharging mechanism, and drives the third conveyor belt to move to realize the discharge of the PC board.

[0013] A third slide rail is installed on the upper side of the inner wall of the first frame. A second slide rail motor is installed on one side of the third slide rail, and a second slider is installed on the third slide rail. The second slider is slidably connected to the third slide rail. The second slide rail motor provides power for the movement of the second slider, and the object to be measured is placed below the second slider.

[0014] An air pump is installed on the upper end face of the first mounting plate. The air pump is connected to the pressurizing tank through a pipeline. A visual sensor is arranged on the upper side of the inner wall of the first frame. A linear displacement sensor is arranged on the support plate. The visual sensor and the linear displacement sensor are electrically connected to the control system. The function of the air pump is to provide air source for the pressurizing tank to realize the functions of pressurization and air pressure regulation. The function of the visual sensor is to visually monitor the linear displacement sensor and the PC board during the test process and identify the deformation amount of the two marks on the PC board. The control system can control the working states of each component according to the information provided by the sensors to realize the automatic operation of the device.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. The test device of the present invention realizes the rapid and accurate capture of the minute deformation of the linear displacement sensor during the compression test through the marking mechanism and the visual sensor. Then, the deformation of the linear displacement sensor is marked through the PC board and the marker pen, which is convenient for subsequent analysis and processing of the test results, and significantly improves the test accuracy and efficiency.

[0017] 2. The material changing mechanism of the present invention can automatically replace different types of linear displacement sensors, which is convenient for the device to continuously and efficiently complete the test tasks, improves the automation level of the test work. The laser sensor of the present invention adopts a non-contact measurement method, which not only improves the test accuracy, but also avoids the secondary damage that may be caused by the traditional contact measurement, and ensures the accuracy of the test.

[0018] 3. The present invention pressurizes the linear displacement sensor to be tested through the pressurizing tank, and can detect whether there is an error in the linear displacement sensor under the high-pressure environment, further improving the reliability and stability of the sensor. Description of the Drawings

[0019] Figure 1 is a perspective view of the present invention;

[0020] Figure 2 is a three-dimensional internal structure of the present invention Figure 1 ;

[0021] Figure 3 is a three-dimensional internal structure of the present invention Figure 2 ;

[0022] Figure 4 is a three-dimensional internal structure diagram of the pressurizing tank of the present invention;

[0023] Figure 5 is a three-dimensional diagram of the board feeding mechanism and the clamping mechanism of the present invention;

[0024] Figure 6 is a three-dimensional diagram of the material changing mechanism of the present invention;

[0025] Figure 7 is a cross-sectional view of the present invention;

[0026] Figure 8 is the present invention Figure 5 a partial enlarged view of area A in;

[0027] Figure 9 is the present invention Figure 7 a partial enlarged view of area B in.

[0028] In the figure: 1, the first mounting plate; 2, the bracket; 3, the first frame; 4, the feeding mechanism; 401, the second mounting plate; 402, the first motor; 403, the first rotating shaft; 404, the first conveyor belt; 5, the pressure box; 6, the plate feeding mechanism; 601, the second motor; 602, the first gear; 603, the second gear; 604, the second conveyor belt; 605, the third mounting plate; 606, the second frame; 607, the third motor; 608, the third gear; 609, the rack; 610, the clamping plate; 611, the PC board; 7, the clamping mechanism; 701, the third cylinder; 702, the third push rod; 703, the fourth mounting plate; 704, the first spring; 705, the fixing plate; 706, the rubber pad; 8, the marking mechanism; 801, the first slide rail; 802, the first slide rail motor; 803, the first slider; 804, the second slide rail; 805, the telescopic block; 806, the marker pen; 9, the material changing mechanism; 901, the installation bin; 902, the moving plate; 903, the fourth motor; 904, the fourth gear; 905, the support plate; 906, the installation cylinder; 907, the electromagnet; 908, the second spring; 909, the moving block; 10, the discharging mechanism; 1001, the fifth mounting plate; 1002, the fifth motor; 1003, the second rotating shaft; 1004, the third conveyor belt; 11, the first cylinder; 12, the first push rod; 13, the first baffle; 14, the blade; 15, the second cylinder; 16, the second push rod; 17, the second baffle; 18, the glass plate; 19, the pressure regulating valve; 20, the third slide rail; 21, the second slide rail motor; 22, the second slider; 23, the air pump; 24, the vision sensor; 25, the linear displacement sensor. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figures 1 - 9, the present invention provides a technical solution: a test device for a linear displacement sensor with a quick positioning function. The test device includes a first mounting plate 1. Four brackets 2 are installed at the four corners of the lower end surface of the first mounting plate 1. A first frame 3 is installed on the upper end surface of the first mounting plate 1. A feeding mechanism 4 is installed on the upper end surface of the first mounting plate 1. A pressure box 5 is installed on one side of the feeding mechanism 4. A plate feeding mechanism 6 is installed on one side of the pressure box 5. A clamping mechanism 7 is installed on one side of the plate feeding mechanism 6. A marking mechanism 8 is installed inside the pressure box 5. A discharging mechanism 10 is installed on one side of the pressure box 5. A material changing mechanism 9 is installed on the lower side of the first mounting plate 1. The first mounting plate 1 is the support platform for the entire test device, providing a stable structural support to ensure that the test device does not displace or vibrate during operation. The brackets 2 are used to support and stabilize the test device. The feeding mechanism 4 is responsible for feeding the PC board 611 into the pressure box 5. The plate feeding mechanism 6 is responsible for replacing the PC board 611 used during the test. The function of the clamping mechanism 7 is to clamp the linear displacement sensor 25 to be detected to ensure stability during the test. The function of the marking mechanism 8 is to mark the small deformation amount of the linear displacement sensor 25 during the pressurization process, leaving a specific mark on the PC board 611, so as to analyze the deformation amount of the linear displacement sensor 25 during the subsequent detection process. The discharging mechanism 10 is responsible for sending out the PC board 611 after marking from the pressure box 5. The material changing mechanism 9 is responsible for automatically replacing different linear displacement sensors 25 after the test is completed, ensuring the quick replacement of the linear displacement sensor 25 during the test, reducing the test pause time, and improving the test efficiency.

[0031] The feeding mechanism 4 includes a second mounting plate 401. The second mounting plate 401 is located on the upper end surface of the first mounting plate 1. A first motor 402 is installed on one side of the second mounting plate 401. A first rotating shaft 403 is installed on the output shaft of the first motor 402. A first conveyor belt 404 is sleeved outside the first rotating shaft 403. The PC board 611 is placed on the first conveyor belt 404. The second mounting plate 401 provides support for the feeding mechanism 4. The first motor 402 is the power source of the feeding mechanism 4, driving the first conveyor belt 404 to convey the PC board 611. The PC board 611 has strong compressive resistance and stability, can withstand high pressure, and maintain the stability of deformation recording.

[0032] The plate feeding mechanism 6 includes a second motor 601 which is located on one side of the outer wall of the pressurizing box 5. A first gear 602 is installed on the output shaft of the second motor 601. A second gear 603 is installed on one side of the first gear 602. The second gear 603 is located on the outer wall of the pressurizing box 5. A second conveyor belt 604 is sleeved outside the first gear 602 and the second gear 603. The first gear 602 and the second gear 603 are meshed and connected with the second conveyor belt 604. An installation plate three 605 is installed on the second conveyor belt 604. The installation plate three 605 is an L-shaped folded plate. A second frame 606 is installed on the installation plate three 605. A third motor 607 is installed on one side of the second frame 606. A third gear 608 is installed on the output shaft of the third motor 607. A groove is formed on the installation plate three 605. Rack bars 609 are installed on both sides of the third gear 608. The third gear 608 is meshed and connected with the rack bars 609. A through groove is formed in the arranged groove of the installation plate three 605. A clamping plate 610 is installed on one side of the rack bar 609. The clamping plate 610 is used for clamping the PC board 611. The second motor 601 is the power source of the plate feeding mechanism 6, driving the second conveyor belt 604 to rotate and transport the PC board 611. The installation plate three 605 provides support for other components of the plate feeding mechanism 6. The third motor 607 is used to drive the rack bar 609 to move, precisely grab and pick up the PC board 611, ensuring the smooth progress of the process of replacing the PC board 611.

[0033] Through grooves are formed on both sides of the pressurizing box 5. The through grooves are respectively located on one side of the feeding mechanism 4 and the discharging mechanism 10. Grooves are formed inside both sides of the pressurizing box 5. A first cylinder 11 is installed on the upper end surface of the pressurizing box 5. A first push rod 12 is installed on the lower side of the first cylinder 11. A first baffle 13 is installed on the lower side of the first push rod 12. The first push rod 12 and the first baffle 13 are located in the groove. A blade 14 is installed on the lower side of the first baffle 13. A second cylinder 15 is installed on one side of the first cylinder 11. The second cylinder 15 is located on the upper end surface of the pressurizing box 5. A second push rod 16 is installed on the lower side of the second cylinder 15. A second baffle 17 is installed on the lower side of the second push rod 16. An installation groove is formed on the upper end surface of the pressurizing box 5. A glass plate 18 is arranged in the installation groove. A pressure regulating valve 19 is arranged on one side of the pressurizing box 5. The function of the first cylinder 11 is to drive the first baffle 13 and the blade 14 to move by pushing the first push rod 12 to move. The function of the second cylinder 15 is to drive the second baffle 17 to move by pushing the second push rod 16 to move, realizing the sealing of the pressurizing box 5 and the splitting of the PC board 611. The glass plate 18 facilitates the visual sensor 24 to detect the deformation amount of the linear displacement sensor 25. The pressure regulating valve 19 is used to control and adjust the pressure inside the pressurizing box 5.

[0034] The clamping mechanism 7 includes a cylinder three 701, which is located on one side of the outer wall of the pressurizing box 5. A push rod three 702 is installed on one side of the cylinder three 701, and a mounting plate four 703 is installed on one side of the push rod three 702. A plurality of first springs 704 are installed on the mounting plate four 703. A fixing plate 705 is installed on one side of the first springs 704, and a rubber pad 706 is installed on one side of the fixing plate 705. The cylinder three 701 is used to drive the fixing plate 705 to move, clamp and fix the linear displacement sensor 25 to be measured. The first springs 704 provide a buffering effect for the clamping mechanism 7, facilitating the clamping of linear displacement sensors 25 of different sizes. The rubber pad 706 directly clamps and fixes the linear displacement sensor 25, preventing it from being damaged during the test and increasing the clamping stability at the same time.

[0035] The marking mechanism 8 includes a first slide rail 801, which is located on the inner wall of the pressurizing box 5. A first slide rail motor 802 is installed on one side of the first slide rail 801, and the first slide rail motor 802 is located on the outer wall of the pressurizing box 5. A first slider 803 is arranged on the first slide rail 801, and the first slider 803 is slidably connected to the first slide rail 801. A second slide rail 804 is arranged below the first slider 803, and a telescopic block 805 is arranged on the second slide rail 804. The telescopic block 805 is slidably connected to the second slide rail 804, and a marking pen 806 is installed below the telescopic block 805. The first slide rail motor 802 provides power for the movement of the marking pen 806 on the first slide rail 801 and the second slide rail 804. The telescopic block 805 is used to drive the up and down movement of the marking pen 806. The marking pen 806 is used to move along the linear displacement sensor 25 to mark its deformation amount.

[0036] The material changing mechanism 9 includes a mounting bin 901, which is located on the lower end surface of the first mounting plate 1. A moving plate 902 is installed inside the mounting bin 901. A toothed groove is formed on the moving plate 902. A fourth motor 903 is installed on the inner wall of the mounting bin 901, and a fourth gear 904 is installed on the output shaft of the fourth motor 903. The fourth gear 904 is meshed with the toothed groove on the moving plate 902. A support plate 905 is installed on the upper side of the moving plate 902. A through groove is formed on one side of the mounting bin 901. Two mounting cylinders 906 are installed on both sides of the inner wall of the mounting bin 901. An electromagnet 907 is installed inside the mounting cylinder 906. A second spring 908 is installed on one side of the electromagnet 907, and a moving block 909 is installed on one side of the second spring 908. Fixed grooves are formed on both sides of the moving plate 902. The mounting bin 901 provides a support and fixing foundation for the material changing mechanism 9. The support plate 905 is used to place the linear displacement sensor 25 to be measured. The fourth motor 903 is used to drive the moving plate 902 to move, thereby driving the linear displacement sensor 25 on the support plate 905 to move. The mounting cylinder 906 provides a support and installation position for the electromagnet 907. The function of the electromagnet 907 is to attract the moving block 909 through magnetic force, thereby realizing the clamping and release of the moving plate 902.

[0037] The discharging mechanism 10 includes a fifth mounting plate 1001. The fifth mounting plate 1001 is located on the upper end face of the first mounting plate 1. A fifth motor 1002 is mounted on one side of the fifth mounting plate 1001. A second rotating shaft 1003 is mounted on the output shaft of the fifth motor 1002. A third conveyor belt 1004 is sleeved on the second rotating shaft 1003. The fifth mounting plate 1001 is the support platform of the discharging mechanism 10 to ensure the stable operation of each component. The fifth motor 1002 is the power source of the discharging mechanism 10, driving the third conveyor belt 1004 to move so as to discharge the PC board 611.

[0038] On the upper side of the inner wall of the first frame 3, a third slide rail 20 is mounted. A second slide rail motor 21 is mounted on one side of the third slide rail 20. A second slider 22 is mounted on the third slide rail 20. The second slider 22 is slidably connected to the third slide rail 20. The second slide rail motor 21 provides power for the movement of the second slider 22. The object to be measured is placed below the second slider 22.

[0039] An air pump 23 is mounted on the upper end face of the first mounting plate 1. The air pump 23 is connected to the pressurizing tank 5 through a pipeline. A vision sensor 24 is provided on the upper side of the inner wall of the first frame 3. A linear displacement sensor 25 is provided on the support plate 905. The vision sensor 24 and the linear displacement sensor 25 are electrically connected to the control system. The function of the air pump 23 is to provide a gas source for the pressurizing tank 5 to realize the functions of pressurization and air pressure regulation. The function of the vision sensor 24 is to visually monitor the linear displacement sensor 25 and the PC board 611 during the test process and identify the deformation amount of the two marks on the PC board 611. The control system can control the working states of each component according to the information provided by the sensors to realize the automatic operation of the device.

[0040] Working principle of the present invention: Before the test device works, the linear displacement sensor 25 to be detected is first placed on the support plate 905. The control system controls the operation of the fourth motor 903. The fourth motor 903 drives the fourth gear 904 to rotate. The rotation of the fourth gear 904 drives the moving plate 902 to move upward. When the visual sensor 24 detects that the support plate 905 moves to the upper end face of the first mounting plate 1, the fourth motor 903 stops operating, the electromagnet 907 is powered off, and the second spring 908 pushes the moving block 909 to move into the fixing groove on the moving plate 902 to engage the moving plate 902. The PC board 611 is placed on the first conveyor belt 404. The first motor 402 operates to drive the first conveyor belt 404 to rotate. The first conveyor belt 404 transports the PC board 611 into the pressurizing box 5. The control system controls the operation of the second motor 601. The second motor 601 drives the first gear 602 to rotate. The first gear 602 drives the second conveyor belt 604 to rotate. When the visual sensor 24 detects that the clamping plates 610 move to both sides of the PC board 611, the second motor 601 stops operating. The third motor 607 operates to drive the third gear 608 to rotate. The third gear 608 drives the racks 609 on both sides to move up and down relatively. The clamping plates 610 clamp and fix the PC board 611. The second motor 601 operates to drive the second conveyor belt 604 to rotate. The clamping plates 610 drive the PC board 611 to move toward the discharging mechanism 10. The PC board 611 moves below the linear displacement sensor 25.

[0041] The control system controls the operation of the first cylinder 11 and the second cylinder 15. The first cylinder 11 drives the first push rod 12 to move downward. The second cylinder 15 drives the second push rod 16 to move downward. The first push rod 12 pushes the first baffle 13 to move downward. The blade 14 cuts the PC board 611. The second push rod 16 pushes the second baffle 17 to move downward. The first baffle 13 and the second baffle 17 seal the pressurizing box 5. The control system controls the operation of the third cylinder 701. The third cylinder 701 drives the third push rod 702 to move. The third push rod 702 drives the fixing plate 705 to move toward the linear displacement sensor 25 to fix it. The third cylinder 701 stops operating. The second slide rail motor 21 drives the second slider 22 to move a certain distance. The linear displacement sensor 25 detects the moving distance of the object to be measured and transmits the information to the control system. The second slide rail motor 21 drives the object to be measured to move back to the original position. The control system controls the operation of the first slide rail motor 802. The first slide rail motor 802 drives the first slider 803 and the telescopic block 805 to move. The telescopic block 805 drives the marking pen 806 to move downward to one side of the linear displacement sensor 25. The marking pen 806 moves along the outside of the linear displacement sensor 25 to mark the outer contour of the linear displacement sensor 25 on the PC board 611.

[0042] The control system controls the air pump 23 to operate and inject gas into the pressure chamber 5, applies high pressure to the linear displacement sensor 25, the slide rail motor two 21 drives the slide block two 22 to move a certain distance, the linear displacement sensor 25 measures the moving distance of the object to be measured, and compares it with the data measured before the high pressure is applied. If the measured data is the same, it is determined that the high-pressure resistance performance of the linear displacement sensor 25 is qualified; if the measured data is different, it is determined that the high-pressure resistance performance of the linear displacement sensor 25 is unqualified. The control system controls the slide rail motor one 802 to operate, and the slide rail motor one 802 drives the marker pen 806 to move along the outside of the linear displacement sensor 25, and marks the outer contour of the linear displacement sensor 25 on the PC board 611.

[0043] After the measurement is completed, open the pressure regulating valve 19 to discharge the gas in the pressure chamber 5. The cylinder three 701 operates to drive the fixed plate 705 away from the linear displacement sensor 25 to be measured. The motor three 607 operates to drive the gear three 608 to rotate, and the gear three 608 drives the racks 609 on both sides to move relatively up and down. The clamping plate 610 clamps and fixes the PC board 611. The motor two 601 operates to drive the conveyor belt two 604 to move towards the discharging mechanism 10 side, and the marked PC board 611 is transported onto the conveyor belt three 1004. The motor three 607 operates to drive the gear three 608 to rotate, and the gear three 608 drives the racks 609 on both sides to move up and down in the opposite direction. The clamping plate 610 releases the clamped PC board 611. The motor five 1002 operates to drive the conveyor belt three 1004 to rotate. The vision sensor 24 detects the marks on the PC board 611 twice, measures the deformation amount of the linear displacement sensor 25. The control system energizes the electromagnet 907, and the electromagnet 907 attracts the moving block 909 to the bottom of the mounting cylinder 906. The motor four 903 operates in the reverse direction to drive the support plate 905 to move downward. The operator takes out the measured linear displacement sensor 25 and places a new linear displacement sensor 25, and starts the next measurement process.

[0044] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A testing device for a linear displacement sensor with a fast positioning function, characterized in that: The described testing device includes a first mounting plate (1). Four brackets (2) are installed at the four corners of the lower end surface of the first mounting plate (1). A first frame (3) is installed on the upper end surface of the first mounting plate (1). A feeding mechanism (4) is installed on the upper end surface of the first mounting plate (1). A pressurizing box (5) is installed on one side of the feeding mechanism (4). A plate feeding mechanism (6) is installed on one side of the pressurizing box (5). A clamping mechanism (7) is installed on one side of the plate feeding mechanism (6). A marking mechanism (8) is installed inside the pressurizing box (5). A discharging mechanism (10) is installed on one side of the pressurizing box (5). A material changing mechanism (9) is installed below the first mounting plate (1).

2. The test device for a linear displacement sensor with a quick positioning function according to claim 1, characterized in that: The feeding mechanism (4) includes a second mounting plate (401). The second mounting plate (401) is located on the upper end surface of the first mounting plate (1). A first motor (402) is installed on one side of the second mounting plate (401). A first rotating shaft (403) is installed on the output shaft of the first motor (402). A first conveyor belt (404) is sleeved outside the first rotating shaft (403). A PC board (611) is placed on the first conveyor belt (404).

3. The testing device for a linear displacement sensor with a quick positioning function according to claim 2, characterized in that: The plate feeding mechanism (6) includes a second motor (601). The second motor (601) is located on one side of the outer wall of the pressurizing box (5). A first gear (602) is installed on the output shaft of the second motor (601). A second gear (603) is installed on one side of the first gear (602). The second gear (603) is located on the outer wall of the pressurizing box (5). A second conveyor belt (604) is sleeved outside the first gear (602) and the second gear (603). The first gear (602) and the second gear (603) are meshed with the second conveyor belt (604). A third mounting plate (605) is installed on the second conveyor belt (604). The third mounting plate (605) is an L-shaped folding plate. A second frame (606) is installed on the third mounting plate (605). A third motor (607) is installed on one side of the second frame (606). A third gear (608) is installed on the output shaft of the third motor (607). A groove is formed on the third mounting plate (605). Rack bars (609) are installed on both sides of the third gear (608). The third gear (608) is meshed with the rack bars (609). A through groove is formed in the arranged groove of the third mounting plate (605). A clamping plate (610) is installed on one side of the rack bar (609). The clamping plate (610) is used for clamping the PC board (611).

4. A testing device for a linear displacement sensor with a quick positioning function according to claim 3, characterized in that: Both sides of the pressure box (5) are provided with through grooves, which are respectively located on one side of the feeding mechanism (4) and the discharging mechanism (10). Grooves are provided inside both sides of the pressure box (5). A first cylinder (11) is installed on the upper end face of the pressure box (5). A first push rod (12) is installed on the lower side of the first cylinder (11). A first baffle (13) is installed on the lower side of the first push rod (12). The first push rod (12) and the first baffle (13) are located in the groove. A blade (14) is installed on the lower side of the first baffle (13). A second cylinder (15) is installed on one side of the first cylinder (11). The second cylinder (15) is located on the upper end face of the pressure box (5). A second push rod (16) is installed on the lower side of the second cylinder (15). A second baffle (17) is installed on the lower side of the second push rod (16). An installation groove is provided on the upper end face of the pressure box (5), and a glass plate (18) is arranged in the installation groove. A pressure regulating valve (19) is arranged on one side of the pressure box (5).

5. The testing device for a linear displacement sensor with a quick positioning function according to claim 4, characterized in that: The clamping mechanism (7) includes a third cylinder (701), which is located on one side of the outer wall of the pressure box (5). A third push rod (702) is installed on one side of the third cylinder (701). A fourth installation plate (703) is installed on one side of the third push rod (702). A plurality of first springs (704) are installed on the fourth installation plate (703). A fixing plate (705) is installed on one side of the first springs (704). A rubber pad (706) is installed on one side of the fixing plate (705).

6. The test device for a linear displacement sensor with a quick positioning function according to claim 5, characterized in that: The marking mechanism (8) includes a first slide rail (801), which is located on the inner wall of the pressure box (5). A first slide rail motor (802) is installed on one side of the first slide rail (801), and the first slide rail motor (802) is located on the outer wall of the pressure box (5). A first slider (803) is arranged on the first slide rail (801), and the first slider (803) is slidably connected with the first slide rail (801). A second slide rail (804) is arranged below the first slider (803). A telescopic block (805) is arranged on the second slide rail (804), and the telescopic block (805) is slidably connected with the second slide rail (804). A marker pen (806) is installed below the telescopic block (805).

7. A testing device for a linear displacement sensor with a quick positioning function according to claim 6, characterized in that: The refueling mechanism (9) includes an installation bin (901) which is located on the lower end face of the first installation plate (1). A moving plate (902) is installed inside the installation bin (901). A toothed groove is formed on the moving plate (902). A fourth motor (903) is installed on the inner wall of the installation bin (901). A fourth gear (904) is installed on the output shaft of the fourth motor (903). The fourth gear (904) is meshed and connected with the toothed groove on the moving plate (902). A support plate (905) is installed above the moving plate (902). A through groove is formed on one side of the installation bin (901). Two installation cylinders (906) are installed on both sides of the inner wall of the installation bin (901). An electromagnet (907) is installed inside the installation cylinder (906). A second spring (908) is installed on one side of the electromagnet (907). A moving block (909) is installed on one side of the second spring (908). Fixed grooves are formed on both sides of the moving plate (902).

8. The test device for a linear displacement sensor with a quick positioning function according to claim 7, characterized in that: The discharging mechanism (10) includes a fifth installation plate (1001) which is located on the upper end face of the first installation plate (1). A fifth motor (1002) is installed on one side of the fifth installation plate (1001). A second rotating shaft (1003) is installed on the output shaft of the fifth motor (1002). A third conveyor belt (1004) is sleeved on the second rotating shaft (1003).

9. A testing device for a linear displacement sensor with a quick positioning function according to claim 8, characterized in that: An upper side of the inner wall of the first frame (3) is provided with a third slide rail (20). A second slide rail motor (21) is installed on one side of the third slide rail (20). A second slider (22) is installed on the third slide rail (20). The second slider (22) is slidably connected with the third slide rail (20).

10. A testing device for a linear displacement sensor with a quick positioning function according to claim 9, characterized in that: An air pump (23) is installed on the upper end face of the first installation plate (1). The air pump (23) is connected to the pressurizing tank (5) through a pipeline. A vision sensor (24) is arranged on the upper side of the inner wall of the first frame (3). A linear displacement sensor (25) is arranged on the support plate (905). The vision sensor (24) and the linear displacement sensor (25) are electrically connected to the control system.

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