Pressure sensor testing device and operation method thereof

Abstract

The invention discloses a pressure sensor testing device and an operation method thereof, and relates to the technical field of pressure sensor testing. The device comprises a machine base, a driving mechanism, a pressing base, cleaning type feeding mechanisms and a pressing piece, the driving mechanism is fixed to the top of the machine base, the pressing base is detachably installed on the side face of the driving mechanism through screws, material tables are fixed to the positions, located on the two sides of the driving mechanism, of the top of the machine base, the cleaning type feeding mechanisms are fixed to the two sides of the material tables, and the pressing piece is fixed to the pressing base. According to the invention, through the flexible configuration of the double-screw driving structure and the pressing seat, only pressure testing and only tension testing can be carried out, the pressure testing and the tension testing can be synchronously carried out, and the pressure testing and the tension testing can be alternately carried out, the single-station testing and the multi-station testing can be satisfied, and the testing efficiency is improved. One machine can meet the full-performance test requirement of the sensor, and the equipment purchase and maintenance cost is reduced.

Description

Technical Field

[0001] This invention belongs to the field of pressure sensor testing technology, and in particular relates to a pressure sensor testing device and its operating method. Background Technology

[0002] Pressure sensors are core sensing components widely used in industrial automation, automotive electronics, medical equipment, aerospace, and other fields, and their performance directly affects system safety and reliability. As industry demands for higher accuracy, stability, and testing efficiency from pressure sensors, testing equipment is now commonly used to evaluate their performance after manufacturing.

[0003] Currently, pressure sensors are commonly tested by applying pressure, as illustrated in existing literature CN106950011B - A Test Method Based on a Pressure Sensor Testing Device. This method discloses a base box, a side plate and a lower pressure block guide rail fixed to the base box, an operating handle fixed to the side plate, a lower pressure block fitted onto the lower pressure block guide rail and connected to the operating handle, a gold finger pressure block fixed below the lower pressure block, a voltage sampling and processing module placed inside the base box, a lifting platform and a display device fixed to the upper surface of the base box, and a weight baffle, a weight slot, and a pressure sensor placement slot placed above the lifting platform. The lower pressure block is fitted onto the lower pressure block guide rail through two symmetrical circular openings. When the gold finger pressure block is pressed down, it corresponds to the position of the pressure sensor gold finger in the sensor placement slot. Two probes are located below the pressure sensor placement slot for contacting the sensor gold finger, and these probes are connected to the voltage sampling and processing module via cables. The display device is also connected to the voltage sampling and processing module via cables. Although existing pressure sensor testing devices can perform pressure tests, they still have the following drawbacks: 1. Existing pressure sensor testing devices typically only support a single testing mode, such as only pressure testing or only tensile testing. It is difficult to meet the requirement of performing multiple tests simultaneously on the same device, requiring multiple devices to work together, resulting in high cost and low efficiency. 2. Existing pressure sensors require frequent disassembly and replacement of pressure components when switching between pressure and tensile testing, which increases downtime, affects testing efficiency, and is time-consuming and labor-intensive. 3. Existing pressure sensor testing equipment relies on manual operation in the processes of feeding, cleaning, and positioning, which is inefficient. Moreover, the surface of the pressure sensor and the pressure rod are easily contaminated with dust. During testing, if dust adheres to the surface of the pressure sensor or the contact surface of the pressure rod, the dust particles form a local "pad," changing the actual contact area and causing uneven pressure distribution. This affects pressure transmission and leads to errors. In addition, when dust covers the sensitive area of ​​the pressure sensor, it may reduce the signal response speed or accuracy, resulting in a decrease in the sensitivity of the pressure sensor and affecting the test results.

[0004] To address these issues, we provide a pressure sensor testing device and its operating method. Summary of the Invention

[0005] The purpose of this invention is to provide a pressure sensor testing device and its operating method. Through the specific design of the driving mechanism, pressure base, cleaning feeding mechanism and pressure component, the invention solves the problems of existing pressure sensor testing devices having single function, low efficiency and poor compatibility.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to a pressure sensor testing device, comprising a base, a drive mechanism, a pressure seat, a clean-feeding mechanism, and a pressure component. The drive mechanism is fixed to the top of the base, and the pressure seat is detachably mounted on the side of the drive mechanism via screws. The pressure seat includes a fixed seat and a movable seat, with the movable seat connected to the outside of the fixed seat. A pressure component is fixed on the pressure seat. Material platforms are fixed to the top of the base on both sides of the drive mechanism, and clean-feeding mechanisms are fixed to both sides of the material platforms. The clean-feeding mechanism includes a screw drive structure, a drive assembly, and a material rack. The drive assembly is fixed to the screw drive structure. The drive assembly includes a servo motor, a drive frame, and an air pump. The servo motor is driven to one side of the drive frame, and the air pump is installed on the other side of the drive frame. The material rack is connected to the top of the drive assembly. The material rack includes an air cylinder and an air pipe clamp, and the air pipe clamp is fixed to the bottom side of the air cylinder.

[0007] The invention is further configured such that a material groove is provided at the center of the top surface of the material platform, and threaded holes are provided on both sides of the material groove.

[0008] The present invention is further configured such that the driving mechanism includes an outer cover, a driving seat and a twin-screw driving structure, the driving seat is slidably connected to the outer cover, the twin-screw driving structure is fixed inside the outer cover and the twin-screw driving structure is connected to the driving seat.

[0009] The present invention is further configured such that the twin-screw drive structure includes a first screw drive assembly and a second screw drive assembly, which are arranged side by side. Both the first and second screw drive assemblies include a motor and a threaded rod. The output shaft of the motor is connected to the threaded rod. The threaded rods of both the first and second screw drive assemblies pass through two drive seats. The threaded rod of the first screw drive assembly is threadedly connected to the lower drive seat and movably connected to the upper drive seat. The second screw drive assembly is movably connected to the lower drive seat and threadedly connected to the upper drive seat. The first screw drive assembly drives the lower drive seat to move, and the second screw drive assembly drives the upper drive seat to move.

[0010] The present invention is further configured such that screw holes are provided on both sides of the drive seat, and the screw holes on the fixed seat are correspondingly provided with screw holes on one side of the drive seat.

[0011] The invention is further configured such that a connecting groove is formed on the outer side of the fixed seat, the connecting groove including a T-shaped groove and a limiting groove, and a limiting groove is formed on the outer side of the T-shaped groove; a mounting slot is formed on the movable seat, and a connecting block is fixed on the side of the movable seat, the connecting block including a T-shaped shaft and a limiting plate, the limiting plate being fixed to the inner end of the T-shaped shaft, and the limiting plate being fixed on the movable seat; the T-shaped shaft is movably connected in the T-shaped groove, the size of the limiting groove matching the size of the limiting plate, and the fixed seat and the movable seat are limited by the limiting plate and the limiting groove.

[0012] The invention is further configured such that the lead screw drive structure includes a base, a motor, a lead screw, and a movable seat. The motor is fixed inside the base. One end of the lead screw is connected to the output shaft of the motor, and the other end of the lead screw is movably connected to the side of the base. The lead screw passes through the movable seat and is bolted to it. The motor and the lead screw work together to drive the movable seat to move horizontally within the base. The drive frame includes a bearing, a support column, a gear seat, a hydraulic rod, and a crossbeam plate. The bottom of the support column is movably connected to the movable seat of the lead screw drive structure through the bearing. A gear seat is fixed to the top of the support column, and a hydraulic rod is fixed to the top of the gear seat. The output end of the hydraulic rod is connected to the crossbeam plate. A circular hole is opened at the outer end of the crossbeam plate. The drive gear of the servo motor meshes with the gear seat of the drive frame. Both the servo motor and the air pump are fixed on the movable seat of the lead screw drive structure.

[0013] The invention is further configured such that the air cylinder is fixed in the circular hole of the drive frame crossbeam plate, and the air pipe clamp is fixed to the periphery of the air cylinder by a fixing frame. The air pipe clamp includes a ring pipe and a set of evenly distributed annular branch pipes. An air port is installed on one side of the ring pipe, and an air suction hood is connected to the bottom of each branch pipe. The air cylinder has cylinder openings at the top, bottom, and both sides. The top cylinder opening and the bottom cylinder opening of the air cylinder are connected to air nozzles through a No. 1 solenoid valve. One side of the air cylinder is connected to one end of a connecting pipe through a No. 2 solenoid valve, and the other end of the connecting pipe is connected to the air port of the air pump. The other side of the air cylinder is connected to one end of a connecting pipe through a No. 2 solenoid valve, and the other end of the connecting pipe is connected to the air port of the air pipe clamp.

[0014] The invention is further configured such that the pressing component includes a pressing rod and a clamp, the top of the pressing rod is fixed with the clamp, the pressing rod is directly opposite the corresponding material groove, the clamp includes a C-shaped seat and a locking plate, and both sides of the locking plate are connected to the side plate of the C-shaped seat by bolts.

[0015] This invention also relates to an operating method for a pressure sensor testing device, which is applied to a pressure sensor testing device, as follows: S1: Stress Test Two pressure sensors are placed into the material troughs of two material platforms respectively. Then the drive mechanism is started, causing the first screw drive assembly and the second screw drive assembly of the twin screw drive structure to drive the upper and lower drive seats to move downward synchronously, thereby driving the pressure seat and pressure component to apply pressure to the pressure sensor for testing. S2: Tensile Test Two pressure sensors are clamped above two material platforms respectively. Then the drive mechanism is started, causing the first and second screw drive components of the twin-screw drive structure to drive the upper and lower drive seats to move upward synchronously, thereby driving the pressure seat and pressure component to perform a tensile test on the pressure sensor. S3: Synchronous Compression and Tension Test: First, a pressure sensor is placed into the material trough of the material platform. Then, the two sides of the pressure sensor are locked by the clamps of the two clamping parts, so that the other pressure sensor is clamped between the two clamping parts. Then, the drive mechanism is started, so that the first screw drive assembly and the second screw drive assembly of the twin screw drive structure drive the upper and lower drive seats to move synchronously in opposite directions, thus completing the operation of synchronous pressure and tensile force testing.

[0016] The present invention has the following beneficial effects: 1. This invention, through the flexible configuration of the twin-screw drive structure and the pressure base, can perform pressure testing only, tensile testing only, simultaneous pressure and tensile testing, and alternating pressure and tensile testing. Moreover, it can meet both single-station and multi-station testing needs, satisfying the full performance testing requirements of sensors with one machine, and reducing equipment purchase and maintenance costs.

[0017] 2. When changing between pressure and tensile tests, the present invention can quickly adjust the position of the pressure component by sliding the T-slot with the T-shaft, adapting to the needs of various tests, without the need for frequent disassembly and replacement of the pressure component, reducing downtime and improving testing efficiency.

[0018] 3. Through the specific design of the cleaning feeding mechanism, this invention can immediately release high-pressure gas after the pressure sensor is placed in the material tank, spraying it onto the surface of the pressure sensor and the bottom surface of the corresponding pressure rod in the material tank for cleaning. At the same time, the suction hood of the air pipe clamp will also release gas to blow onto the surface of the pressure sensor, which can assist in cleaning the surface of the pressure sensor and ensure that the sensor surface is free of impurities before testing. This invention realizes automatic gripping and feeding, automatic cleaning and automatic gripping and unloading, reduces manual intervention, reduces the risk of dust pollution, and improves test consistency and efficiency.

[0019] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 Schematic diagram of the pressure sensor testing device Figure 1 .

[0022] Figure 2 Schematic diagram of the pressure sensor testing device Figure 2 .

[0023] Figure 3 This is a schematic diagram of the exploded structure of the pressure component and the pressure base.

[0024] Figure 4 This is a schematic diagram of the movable seat.

[0025] Figure 5 This is a cross-sectional structural diagram of the connecting block and connecting groove in the pressure seat.

[0026] Figure 6 This is a schematic diagram of a clean feeding mechanism.

[0027] Figure 7 This is a schematic diagram of the air cylinder structure.

[0028] Figure 8 This is a schematic diagram of the trachea clamp.

[0029] Figure 9 A schematic diagram of the internal structure of the drive mechanism after the outer cover has been removed.

[0030] The attached diagram lists the components represented by each number as follows: 100. Machine base; 110. Material platform; 111. Material trough; 200. Drive mechanism; 210. Outer casing; 220. Drive base; 230. Twin-screw drive structure; 300, Pressure seat; 310, Fixed seat; 311, Connecting groove; 3111, T-slot; 3112, Limiting groove; 320, Movable seat; 321, Mounting slot; 322, Connecting block; 3221, T-shaft; 3222, Limiting plate; 400. Cleaning-type feeding mechanism; 401. Connecting pipe; 402. Connecting pipe; 410. Screw drive structure; 420. Drive assembly; 421. Servo motor; 422. Drive frame; 423. Air pump; 430. Material rack; 431. Air cylinder; 4311. Air nozzle; 4312. Solenoid valve No. 1; 4313. Solenoid valve No. 2; 432. Air pipe clamp; 4321. Fixing frame; 4322. Suction hood; 500, Pressing parts. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0032] Please see Figure 1 , Figure 2 , Figure 3 and Figure 9 This invention relates to a pressure sensor testing device, comprising a base 100, a drive mechanism 200, a pressure seat 300, a clean feeding mechanism 400, and a pressure component 500. The drive mechanism 200 is fixed to the top of the base 100, and the pressure seat 300 is detachably mounted on the side of the drive mechanism 200 by screws. Material platforms 110 are fixed to the top of the base 100 on both sides of the drive mechanism 200. The pressure component 500 is fixed on the pressure seat 300. The pressure component 500 includes a pressure rod and a clamp. The clamp is fixed to the top of the pressure rod, and the pressure rod faces the corresponding material groove 111. The clamp includes a C-shaped seat and a locking plate. Both sides of the locking plate are connected to the side plate of the C-shaped seat by bolts.

[0033] Specifically, a material groove 111 is provided at the center of the top surface of the material platform 110, and threaded holes are provided on both sides of the material groove 111.

[0034] Furthermore, the drive mechanism 200 includes an outer cover 210, a drive base 220, and a twin-screw drive structure 230. The drive base 220 is slidably connected to the outer cover 210, and the twin-screw drive structure 230 is fixed inside the outer cover 210. The twin-screw drive structure 230 is connected to the drive base 220. The twin-screw drive structure 230 includes a first screw drive assembly and a second screw drive assembly, which are arranged side by side. Both the first and second screw drive assemblies include a motor and a threaded rod, and the output shaft of the motor is connected to the threaded rod. The threaded rods of both the No. 1 and No. 2 screw drive assemblies pass through the two drive seats 220. The threaded rod of the No. 1 screw drive assembly is threadedly connected to the lower drive seat 220 and movably connected to the upper drive seat 220. The No. 2 screw drive assembly is movably connected to the lower drive seat 220 and threadedly connected to the upper drive seat 220. The No. 1 screw drive assembly drives the lower drive seat 220 to move, and the No. 2 screw drive assembly drives the upper drive seat 220 to move.

[0035] The operation process of this embodiment is as follows: When testing the pressure sensor, firstly, if only pressure testing is required, one pressure seat 300 is fixedly installed on the side of the lower drive seat 220, and then another pressure seat 300 is fixedly installed on the side of the upper drive seat 220, ensuring that the two pressure seats 300 are located on opposite sides of the drive mechanism 200. Then, two pressure members 500 are fixedly installed on the two pressure seats 300 respectively, ensuring that the pressure rods of the two pressure members 500 are both located at the bottom, and the two pressure seats 300 are respectively located on the two material tables 1. Directly above 10, the pressure sensor is then placed into the material trough 111 of the material platform 110. After that, the drive mechanism 200 is started, causing the first screw drive assembly and the second screw drive assembly of the twin screw drive structure 230 to drive the upper and lower drive seats 220 to move downward synchronously, thereby driving the pressure seat 300 and the pressure component 500 to apply pressure to the pressure sensor for testing. During this process, by controlling the direction and speed of the two sets of screws, the vertical movement trajectory of the pressure seat 300 is adjusted to ensure that the pressure rod of the pressure component 500 presses down at the set speed and pressure. In addition, the No. 1 screw drive assembly and the No. 2 screw drive assembly in the twin-screw drive structure 230 can also be operated independently, that is, the two sides of the drive mechanism 200 can be pressure tested simultaneously, or pressure tested alternately, or pressure tested independently; Secondly, if only tensile testing is required, first install the two pressure seats 300 on opposite sides of the drive mechanism 200, then install the pressure components 500 on both material tables 110, ensuring that the clamps of the pressure components 500 are located above, then fix the two pressure components 500 on the two pressure seats 300 respectively, ensuring that the clamps of the pressure components 500 are located below, and then lock the two sides of the pressure sensor by mirroring the clamps of the two pressure components 500, so that the two pressure sensors are clamped above the two material tables 110 respectively. Then start the drive mechanism 200, so that the first screw drive assembly and the second screw drive assembly of the twin screw drive structure 230 drive the upper and lower drive seats 220 to move upward synchronously, thereby driving the pressure seats 300 and the pressure components 500 to perform tensile testing on the pressure sensors; In addition, the No. 1 screw drive assembly and the No. 2 screw drive assembly in the twin-screw drive structure 230 can also be operated independently, that is, the two sides of the drive mechanism 200 can be tested simultaneously, or they can be tested alternately, or they can be tested independently. Thirdly, if simultaneous pressure and tension testing is required, first fix one pressure seat 300 to the side of the lower drive seat 220, then fix the other pressure seat 300 to the side of the upper drive seat 220, ensuring that the two pressure seats 300 are on the same side of the drive mechanism 200. Then, fix the two pressure components 500 on the two pressure seats 300 respectively, ensuring that the pressure rod of the lower pressure component 500 is at the bottom, and the pressure rod of the upper pressure component 500 is at the top, i.e., the two pressure components 500 are mirror images. Then, place a pressure sensor into the material slot 111 of the material table 110. The pressure sensor is clamped between the two clamping parts 500 by locking the two sides of the pressure sensor, so that another pressure sensor is clamped between the two clamping parts 500. Then the drive mechanism 200 is activated, so that the first screw drive assembly and the second screw drive assembly of the twin screw drive structure 230 drive the upper and lower drive seats 220 to move synchronously in opposite directions. That is, the lower drive seat 220 moves downward to perform a pressure test on the pressure sensor in the material table 110, while the upper drive seat 220 moves upward synchronously to perform a tensile test on the pressure sensor clamped between the two clamping parts 300, thus completing the operation of synchronous pressure and tensile testing. In addition, two pressure seats 300 can be installed on opposite sides of the drive mechanism 200, and then one pressure sensor can be placed in the material groove 111 of one side of the material platform 110, and another pressure sensor can be clamped above the other side of the material platform 110. Then the drive mechanism 200 is started, causing the first screw drive assembly and the second screw drive assembly of the twin screw drive structure 230 to drive the upper and lower drive seats 220 to move synchronously in opposite directions, thereby performing a tensile test on the clamped pressure sensor and simultaneously performing a pressure test on the other pressure sensor placed in the material groove 111. In this installation method, pressure and tension tests can be performed simultaneously on both sides of the drive mechanism 200, or they can be performed alternately or independently. Example 2

[0036] Please see Figure 3 , Figure 4 and Figure 5 Based on Embodiment 1, the pressure seat 300 includes a fixed seat 310 and a movable seat 320, with the movable seat 320 connected to the outer side of the fixed seat 310.

[0037] Specifically, screw holes are provided on both sides of the drive base 220, and the screw holes on the fixed base 310 are correspondingly set with the screw holes on one side of the drive base 220.

[0038] Furthermore, the outer side of the fixed seat 310 is provided with a connecting groove 311, which includes a T-shaped groove 3111 and a limiting groove 3112. The limiting groove 3112 is provided on the outer side of the T-shaped groove 3111. The movable seat 320 is provided with a mounting slot 321. A connecting block 322 is fixed on the side of the movable seat 320. The connecting block 322 includes a T-shaped shaft 3221 and a limiting plate 3222. The inner end of the T-shaped shaft 3221 is fixed with the limiting plate 3222, and the limiting plate 3222 is fixed on the movable seat 320. The T-shaped shaft 3221 is movably connected in the T-shaped groove 3111. The size of the limiting groove 3112 matches the size of the limiting plate 3222. The fixed seat 310 and the movable seat 320 are limited by the limiting plate 3222 and the limiting groove 3112.

[0039] The operation process of this embodiment is as follows: When adjusting the position of the pressure rod and the clamp in the pressure member 500, pull the movable seat 320 outward with force, move the T-shaped shaft 3221 to the outermost side in the T-shaped groove 3111, so that the limiting plate 3222 is disengaged from the limiting groove 3112. At this time, rotate the movable seat 320 to change the position of the pressure member 500 on the pressure seat 300. After changing the position, press the movable seat 320 inward with force, move the T-shaped shaft 3221 to the innermost side in the T-shaped groove 3111, so that the limiting plate 3222 is tightly squeezed into the limiting groove 3112, thus completing the limiting of the movable seat 320. Example 3

[0040] Please see Figure 6 , Figure 7 and Figure 8Based on Embodiments 1 and 2, a clean feeding mechanism 400 is fixed on both sides of the material platform 110. The clean feeding mechanism 400 includes a screw drive structure 410, a drive assembly 420, and a material rack 430. The drive assembly 420 is fixed on the screw drive structure 410. The drive assembly 420 includes a servo motor 421, a drive frame 422, and an air pump 423. The servo motor 421 is connected to one side of the drive frame 422, and the air pump 423 is installed on the other side of the drive frame 422. The material rack 430 is connected to the top of the drive assembly 420. The material rack 430 includes an air cylinder 431 and an air pipe clamp 432. The air pipe clamp 432 is fixed to the bottom side of the air cylinder 431.

[0041] Specifically, the lead screw drive structure 410 includes a base, a motor, a lead screw, and a movable seat. The motor is fixed inside the base. One end of the lead screw is connected to the output shaft of the motor, and the other end of the lead screw is movably connected to the side of the base. The lead screw passes through the movable seat and is bolted to it. The motor and the lead screw work together to drive the movable seat to move horizontally within the base. The drive frame 422 includes a bearing, a support column, a gear seat, a hydraulic rod, and a crossbeam plate. The bottom of the support column is movably connected to the movable seat of the lead screw drive structure 410 through the bearing. A gear seat is fixed to the top of the support column, and a hydraulic rod is fixed to the top of the gear seat. The output end of the hydraulic rod is connected to the crossbeam plate, and a round hole is opened at the outer end of the crossbeam plate. The drive gear of the servo motor 421 meshes with the gear seat of the drive frame 422. The servo motor 421 and the air pump 423 are both fixed to the movable seat of the lead screw drive structure 410.

[0042] Furthermore, the air cylinder 431 is fixed in the round hole of the crossbeam plate of the drive frame 422, and the air pipe clamp 432 is fixed to the periphery of the air cylinder 431 by the fixing frame 4321. The air pipe clamp 432 includes a ring pipe and a set of evenly distributed annular branch pipes. An air port is installed on one side of the ring pipe, and the bottom of each branch pipe is connected to an air suction hood 4322. The air cylinder 431 has openings at the top, bottom, and both sides. The top and bottom openings of the air cylinder 431 are connected to air nozzles 4311 via solenoid valve 4312. One side of the air cylinder 431 is connected to one end of the connecting pipe 401 via solenoid valve 4313, and the other end of the connecting pipe 401 is connected to the air port of the air pump 423. The other side of the air cylinder 431 is connected to one end of the connecting pipe 402 via solenoid valve 4313, and the other end of the connecting pipe 402 is connected to the air port of the air pipe clamp 432.

[0043] The operation process of this embodiment is as follows: Before pressure detection, the pressure sensor to be tested is placed at the loading station on one side of the clean-type loading mechanism 400. Then, through the action of the servo motor 421, the drive frame 422 is rotated as a whole, causing the material rack 430 to move directly above the loading station. Then, through the action of the hydraulic rod of the drive frame 422, the material rack 430 is moved down as a whole until the suction hood 4322 of the material rack 430 contacts the pressure sensor at the top of the loading station. Then, the second solenoid valve 4313 is opened, and the air pump 423 is started at the same time. Negative pressure is input to the air cylinder 431 through the connecting pipe 401. The air cylinder 431 transmits the negative pressure to the ring pipe of the air pipe clamp 432 through the connecting pipe 402. This causes the suction hood 4322 at the bottom of the branch pipe of the air clamp 432 to adsorb the sensor in the material trough 111, completing the gripping and material removal. After the material is removed, the hydraulic rod of the drive frame 422 drives the material rack 430 to move upward to its original position. Then, the servo motor 421 drives the drive frame 422 to rotate to its original position. After that, the screw drive structure 410 drives the material rack 430 to move horizontally above the material trough 111 of the material platform 110. Then, the hydraulic rod of the drive frame 422 drives the material rack 430 to move downward, placing the gripped pressure sensor into the material trough 111 of the material platform 110. Finally, the air pump 423 and the second solenoid valve 4313 are turned off to complete the material release. Then, through the action of the hydraulic rod of the drive frame 422, the material rack 430 is moved upward to its original position. Immediately afterward, the air pump 423 is switched to the blowing mode, that is, the air pump 423 is started, and the first solenoid valve 4312 and the two first solenoid valves 4312 are opened simultaneously, causing high-pressure gas to be sprayed through the two air nozzles 4311 onto the surface of the pressure sensor in the material trough 111 and the bottom surface of the corresponding pressure rod of the pressure component 500 for cleaning. At the same time, the suction hood 4322 of the air pipe clamp 432 will also release gas to blow onto the surface of the pressure sensor to assist in cleaning the surface of the pressure sensor and ensure that there are no impurities on the sensor surface before testing. After cleaning, the material rack 430 is driven horizontally by the action of the lead screw drive structure 410. Remove the material from the material platform 110 area and then perform a pressure test. After the pressure test, the material rack 430 is driven to move horizontally above the material trough 111 of the material platform 110 by the action of the screw drive structure 410. Then, the material rack 430 is driven to move down as a whole by the action of the hydraulic rod of the drive frame 422, so that the suction hood 4322 of the material rack 430 contacts the pressure sensor in the material trough 111. Then, the air pump 423 is started to complete the gripping of the pressure sensor. After gripping, the material rack 430 is driven to move to the unloading station by the combined action of the hydraulic rod of the drive frame 422, the screw drive structure 410 and the servo motor 421. Then, the air pump 423 is turned off to complete the unloading. Then, the above process is repeated. It should be added that the cleaning feeding mechanisms 400 on both sides of the discharge platform 110 can operate alternately. That is, while one side of the cleaning feeding mechanism 400 is feeding material to the unloading station and taking material from the loading station, the other side of the cleaning feeding mechanism 400 is feeding material to the discharge platform 110 and cleaning it. Example 4

[0044] This invention also relates to an operating method for a pressure sensor testing device, which is applied to a pressure sensor testing device, as follows: S1: Stress Test Two pressure sensors are placed into the material troughs 111 of the two material platforms 110 respectively. Then the drive mechanism 200 is started, causing the first screw drive assembly and the second screw drive assembly of the twin screw drive structure 230 to drive the upper and lower drive seats 220 to move downward synchronously, thereby driving the pressure seat 300 and the pressure component 500 to apply pressure to the pressure sensor for testing. S2: Tensile Test Two pressure sensors are clamped above two material platforms 110 respectively. Then the drive mechanism 200 is started, causing the first screw drive assembly and the second screw drive assembly of the twin screw drive structure 230 to drive the upper and lower drive seats 220 to move upward synchronously, thereby driving the pressure seat 300 and the pressure piece 500 to perform a tensile test on the pressure sensor. S3: Synchronous Compression and Tension Test: First, a pressure sensor is placed into the material slot 111 of the material platform 110. Then, the two sides of the pressure sensor are locked by the clamps of the two pressure components 500, so that the other pressure sensor is clamped between the two pressure components 500. Then, the drive mechanism 200 is started, so that the first screw drive assembly and the second screw drive assembly of the twin screw drive structure 230 drive the upper and lower drive seats 220 to move synchronously in opposite directions, thus completing the operation of synchronous pressure and tensile testing.

[0045] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A pressure sensor testing device, comprising a base (100), a drive mechanism (200), a pressure seat (300), a clean-feeding mechanism (400), and a pressure component (500); characterized in that: A drive mechanism (200) is fixed to the top of the base (100). A pressure seat (300) is detachably installed on the side of the drive mechanism (200) by screws. A material platform (110) is fixed to the top of the base (100) on both sides of the drive mechanism (200). A cleaning feeding mechanism (400) is fixed to both sides of the material platform (110). A pressure component (500) is fixed on the pressure seat (300). The pressure seat (300) includes a fixed seat (310) and a movable seat (320), with the movable seat (320) connected to the outside of the fixed seat (310). The clean feeding mechanism (400) includes a screw drive structure (410), a drive assembly (420), and a material rack (430). The drive assembly (420) is fixed on the screw drive structure (410). The drive assembly (420) includes a servo motor (421), a drive frame (422), and an air pump (423). The servo motor (421) is connected to one side of the drive frame (422), and the air pump (423) is installed on the other side of the drive frame (422). The material rack (430) is connected to the top of the drive assembly (420). The material rack (430) includes an air cylinder (431) and an air pipe clamp (432). The air pipe clamp (432) is fixed to the bottom side of the air cylinder (431).

2. The pressure sensor testing device according to claim 1, characterized in that, The material platform (110) has a material groove (111) at the center of its top surface, and threaded holes are provided on both sides of the material groove (111).

3. The pressure sensor testing device according to claim 2, characterized in that, The drive mechanism (200) includes an outer cover (210), a drive seat (220), and a twin-screw drive structure (230). The drive seat (220) is slidably connected to the outer cover (210), and the twin-screw drive structure (230) is fixed inside the outer cover (210). The twin-screw drive structure (230) is connected to the drive seat (220).

4. The pressure sensor testing device according to claim 3, characterized in that, The twin-screw drive structure (230) includes a first screw drive assembly and a second screw drive assembly, which are arranged side by side. Both the first and second screw drive assemblies include a motor and a threaded rod. The output shaft of the motor is connected to the threaded rod. The threaded rods of both the first and second screw drive assemblies pass through two drive seats (220). The threaded rod of the first screw drive assembly is threadedly connected to the lower drive seat (220) and movably connected to the upper drive seat (220). The second screw drive assembly is movably connected to the lower drive seat (220) and threadedly connected to the upper drive seat (220). The first screw drive assembly drives the lower drive seat (220) to move, and the second screw drive assembly drives the upper drive seat (220) to move.

5. A pressure sensor testing device according to claim 4, characterized in that, Both sides of the drive seat (220) are provided with screw holes, and the screw holes on the fixed seat (310) are corresponding to the screw holes on one side of the drive seat (220).

6. The pressure sensor testing device according to claim 5, characterized in that, The outer side of the fixed base (310) is provided with a connecting groove (311), the connecting groove (311) includes a T-shaped groove (3111) and a limiting groove (3112), and the limiting groove (3112) is provided on the outer side of the T-shaped groove (3111). The movable seat (320) is provided with a mounting slot (321), and a connecting block (322) is fixed on the side of the movable seat (320). The connecting block (322) includes a T-shaped shaft (3221) and a limiting plate (3222). The inner end of the T-shaped shaft (3221) is fixed with the limiting plate (3222), and the limiting plate (3222) is fixed on the movable seat (320). The T-shaped shaft (3221) is movably connected in the T-shaped groove (3111), and the size of the limiting groove (3112) matches the size of the limiting plate (3222). The fixed seat (310) and the movable seat (320) are limited by the limiting plate (3222) and the limiting groove (3112).

7. A pressure sensor testing device according to claim 6, characterized in that, The lead screw drive structure (410) includes a base, a motor, a lead screw and a movable seat. The motor is fixed inside the base. One end of the lead screw is connected to the output shaft of the motor, and the other end of the lead screw is movably connected to the side of the base. The lead screw passes through the movable seat and is bolted to it. The motor and the lead screw work together to drive the movable seat to move horizontally inside the base. The drive frame (422) includes a bearing, a support column, a gear seat, a hydraulic rod, and a crossbeam plate. The bottom of the support column is movably connected to the movable seat of the screw drive structure (410) through the bearing. The top of the support column is fixed with a gear seat, and the top of the gear seat is fixed with a hydraulic rod. The output end of the hydraulic rod is connected to the crossbeam plate. A round hole is opened at the outer end of the crossbeam plate. The drive gear of the servo motor (421) meshes with the gear seat of the drive frame (422). The servo motor (421) and the air pump (423) are both fixed on the movable seat of the screw drive structure (410).

8. The pressure sensor testing device according to claim 7, characterized in that, The air cylinder (431) is fixed in the round hole of the crossbeam plate of the drive frame (422). The air pipe clamp (432) is fixed to the periphery of the air cylinder (431) by the fixing frame (4321). The air pipe clamp (432) includes a ring pipe and a set of evenly distributed ring-shaped branch pipes. An air port is installed on one side of the ring pipe. The bottom of each branch pipe is connected to an air suction hood (4322). The air cylinder (431) has openings at the top, bottom and both sides. The top opening and bottom opening of the air cylinder (431) are connected to air nozzles (4311) through a first solenoid valve (4312). One side of the air cylinder (431) is connected to one end of a connecting pipe (401) through a second solenoid valve (4313). The other end of the connecting pipe (401) is connected to the air port of an air pump (423). The other side of the air cylinder (431) is connected to one end of a connecting pipe (402) through a second solenoid valve (4313). The other end of the connecting pipe (402) is connected to the air port of an air pipe clamp (432).

9. A pressure sensor testing device according to claim 8, characterized in that, The pressure member (500) includes a pressure rod and a clamp. The top of the pressure rod is fixed with a clamp. The pressure rod is directly opposite the corresponding material groove (111). The clamp includes a C-shaped seat and a locking plate. Both sides of the locking plate are connected to the side plate of the C-shaped seat by bolts.

10. An operating method for a pressure sensor testing device, characterized in that, The pressure sensor testing device according to claim 9 is specifically applied as follows: S1: Stress Test Two pressure sensors are placed into the material troughs (111) of two material platforms (110) respectively. The drive mechanism (200) is started, causing the first screw drive assembly and the second screw drive assembly of the twin screw drive structure (230) to drive the upper and lower drive seats (220) to move downward synchronously, thereby driving the pressure seat (300) and the pressure piece (500) to apply pressure to the pressure sensor for testing. S2: Tensile test: Two pressure sensors are clamped above two material platforms (110) respectively. The drive mechanism (200) is started, causing the first screw drive assembly and the second screw drive assembly of the twin screw drive structure (230) to drive the upper and lower drive seats (220) to move upward synchronously, thereby driving the pressure seat (300) and the pressure piece (500) to perform a tensile test on the pressure sensor. S3: Synchronous Compression and Tension Test: First, place a pressure sensor into the material slot (111) of the material platform (110), and then lock the two sides of the pressure sensor with the clamps of the two pressure pieces (500), so that the other pressure sensor is clamped between the two pressure pieces (500). Start the drive mechanism (200), so that the first screw drive assembly and the second screw drive assembly of the twin screw drive structure (230) drive the upper and lower drive seats (220) to move synchronously in opposite directions, thus completing the operation of synchronous pressure and tensile testing.

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