A ceramic capacitive pressure sensor core testing mechanism

Abstract

The application relates to a ceramic capacitive pressure sensor core testing mechanism, which comprises a conveying line, a tool assembly conveyed along the conveying line, a testing station arranged on the conveying line, a testing lower assembly, a plurality of testing positions arranged on the top side of the testing lower assembly and used for loading capacitive cores, a supporting plate and a pressing plate, wherein the supporting plate is used for lifting the tool assembly and providing pressure gas for the plurality of testing positions of the testing lower assembly, and the pressing plate is provided with a testing upper assembly on the bottom side, the testing upper assembly comprises a probe assembly, the testing upper assembly is used for being pressed on the testing position by the pressing force of the pressing plate, the probe assembly is connected with the lead wire of the capacitive core in a contact mode, and the corresponding capacity value of the capacitive core under the testing pressure is fed back. The ceramic capacitive pressure sensor core testing mechanism has high testing accuracy, can be used for batch detection, has high automation degree and can meet the detection requirements of a factory scale.

Description

Technical Field

[0001] This invention relates to the field of pressure sensor technology, and in particular to a ceramic capacitive pressure sensor core testing mechanism. Background Technology

[0002] As the pressure-sensing element of a pressure sensor, the ceramic capacitive pressure sensor core requires pressure testing before leaving the factory. Currently, the testing of ceramic capacitive pressure sensor cores uses a digital bridge and a pressure controller to test the capacitance, which is difficult to complete in batch testing and has low testing efficiency. In addition, the capacitor core needs to be individually inkjet-coded, and the correspondence between the product serial number and the test data is prone to errors. This method is only suitable for small-scale production and testing of R&D samples, and is not suitable for large-scale testing needs in factories. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides a ceramic capacitive pressure sensor core testing mechanism that offers high testing accuracy, batch testing capability, and a high degree of automation, meeting the testing needs of large-scale factories.

[0004] The technical solution adopted by this invention to solve its technical problem is: a ceramic capacitive pressure sensor core testing mechanism, including a conveyor line, a tooling assembly conveyed along the conveyor line, and a testing station set on the conveyor line; the tooling assembly includes a lower testing assembly; the top side of the lower testing assembly is provided with multiple testing positions for corresponding loading of the capacitor core; the testing station includes a support plate and a pressure plate; the support plate is used to lift the tooling assembly and provide pressurized gas to the multiple testing positions of the lower testing assembly, thereby providing testing pressure to the capacitor core; an upper testing assembly is installed on the bottom side of the pressure plate; the upper testing assembly includes a probe assembly, which is used to press against the testing position by the downward pressure of the pressure plate, and the probe assembly is in contact with the lead wire of the capacitor core, thereby providing feedback on the capacitance value of the capacitor core under the testing pressure.

[0005] Furthermore, the test station also includes a test mounting base plate and a test mounting top plate mounted above the test mounting base plate; the test mounting base plate is equipped with a pallet lifting mechanism for driving the pallet to rise and fall; the test mounting top plate is equipped with a test pressing mechanism for driving the pressure plate to press down; the conveyor line passes between the test mounting base plate and the test mounting top plate; the pallet is used to lift up the tooling assembly when it is delivered to the test station by the conveyor line, so that the tooling assembly is removed from the conveyor line.

[0006] Furthermore, the test station also includes a translation support pad and a lateral translation drive mechanism for driving the translation support pad; the translation support pad is used to move to the bottom side of the pallet by the lateral translation drive mechanism when the pallet lifts the tooling assembly, so as to support the pallet to bear the pressure when the pressure plate is pressed down.

[0007] Furthermore, the tooling assembly also includes a carrier plate and the test lower assembly mounted on the carrier plate; the carrier plate includes a carrier plate body, and the test lower assembly includes a carrier block fixed on the carrier plate body and a positioning plate for loading capacitor cores; the carrier block includes a carrier block body, and the top surface of the carrier block body is provided with a positioning plate groove; the bottom surface of the positioning plate groove is distributed with multiple test grooves; the positioning plate includes a positioning plate body, and the positioning plate body is provided with capacitor core mounting holes at positions corresponding to the test grooves; a mounting block is embedded in the capacitor core mounting hole; and a capacitor core is installed in the mounting block. The capacitor core described above; the carrier block body is also provided with carrier block air holes; the carrier plate body is also provided with carrier plate air holes; one end of the carrier block air hole is connected to the carrier plate air hole, and the other end leads to the corresponding test slot; the positioning plate body is placed in the positioning plate slot of the carrier block, the capacitor core corresponds to the test slot, and the test slot constitutes the test position; the support plate includes a support plate body; the support plate body is provided with support plate air holes and support plate air distribution holes that are connected to the support plate air holes and correspond to the carrier plate air holes; the support plate air holes are used to access high-pressure gas, thereby providing high-pressure gas to the test slot.

[0008] Furthermore, the probe assembly includes probes corresponding to the leads of the capacitor core; the test assembly also includes an upper fixing block fixedly mounted to the pressure plate, a capacitor core pressing block mounted on the bottom surface of the fixing block, and a probe fixing seat mounted on the top side of the fixing block; the probe fixing seat is provided with a fixing seat probe hole corresponding to the probe; the capacitor core pressing block is provided with a pressing block probe hole communicating with the fixing seat probe hole; the bottom end of the probe of the probe assembly passes through the fixing seat probe hole and is located in the pressing block probe hole; the capacitor core pressing block is used to move downward with the upper fixing block under the downward pressure of the pressure plate, the capacitor core pressing block acts on the capacitor core, and the pressing block probe hole of the capacitor core pressing block is sleeved on the lead of the capacitor core, so that the lead of the capacitor core contacts the probe in the pressing block probe hole.

[0009] Furthermore, the probe assembly also includes a lead-out circuit board connected to the probe and a multi-pin connector connected to the lead-out circuit board; an upper pad is also provided between the upper fixing block and the pressure plate; the upper pad is provided with a probe assembly receiving groove, and the lead-out circuit board and the multi-pin connector are installed in the probe assembly receiving groove.

[0010] Furthermore, the testing mechanism also includes a coding station and a scanning station located on the feeding side of the testing station on the conveyor line; the coding station is used to code the capacitor core on the tooling assembly that is conveyed to the station; the scanning station is used to scan the already coded capacitor core on the tooling assembly that is conveyed to the station.

[0011] Furthermore, the coding station includes a linear coding module installed on the conveyor line and a printhead installed on the moving end of the linear coding module; the linear coding module is used to drive the printhead to move along the length of the conveyor line; the coding station also includes a lifting and positioning mechanism installed on the conveyor line; the lifting and positioning mechanism is used to lift the tooling assembly when it is sent to the coding station by the conveyor line, so that the tooling assembly is removed from the conveyor line; the printhead is used to sequentially code the capacitor cores on the tooling assembly under the drive of the linear coding module; the scanning station includes a scanning mounting frame installed on the conveyor line and a barcode scanner installed on the scanning mounting frame; the barcode scanner is used to sequentially scan each capacitor core flowing through the scanning station.

[0012] Furthermore, the testing mechanism also includes a full material detection station set on the feeding side of the conveyor line; the full material detection station includes a full material detection lifting mechanism installed above the conveyor line, and a full material detection limit switch fixed to the moving end of the full material detection lifting mechanism; the full material detection station is used to detect whether the capacitor core on the tooling assembly conveyed to the station is fully loaded.

[0013] Furthermore, the conveyor line includes a loading conveyor line, a return conveyor line, a first lifting conveyor mechanism, and a second lifting conveyor mechanism; the first lifting conveyor mechanism is used to connect the discharge end of the loading conveyor line and the inlet end of the return conveyor line; the second lifting conveyor mechanism is used to connect the inlet end of the loading conveyor line and the discharge end of the return conveyor line; a unloading station is also provided at the end of the loading conveyor line; a unloading conveyor line is also provided at the unloading station; the unloading station includes a horizontal moving module installed on the conveyor line, an unloading lifting module installed at the moving end of the horizontal moving module, and a vacuum suction robot installed on the unloading lifting module; the vacuum suction robot is used to transfer the capacitor core on the tooling assembly conveyed to the station from the loading conveyor line to the unloading conveyor line under the drive of the horizontal moving module and the unloading lifting module; the unloading station also includes a lifting and positioning mechanism installed on the conveyor line; the lifting and positioning mechanism is used to lift the tooling assembly when it is sent to the unloading station by the conveyor line, so that the tooling assembly is removed from the conveyor line.

[0014] Advantages of the present invention: The ceramic capacitive pressure sensor core testing mechanism of the present invention has high testing accuracy, can be used for batch testing, has a high degree of automation, and meets the testing needs of large-scale factories. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the testing mechanism located at the testing station, as shown in the embodiment.

[0016] Figure 2 This is a three-dimensional schematic diagram of the testing station of the testing mechanism in the embodiment.

[0017] Figure 3 This is a three-dimensional schematic diagram of the tooling components of the testing mechanism in the embodiment.

[0018] Figure 4 An exploded view of the tooling components of the test mechanism in this embodiment;

[0019] Figure 5 A three-dimensional schematic diagram of the carrier block of the tooling assembly of the test mechanism in the embodiment;

[0020] Figure 6 This is a schematic diagram of the explosion-proof operation of the tray of the tooling assembly of the test mechanism in the embodiment.

[0021] Figure 7 This is a three-dimensional schematic diagram of the test components at the test station of the test mechanism in an embodiment.

[0022] Figure 8 This is a three-dimensional schematic diagram of the test components at the test station of the test mechanism in the embodiment, taken from another angle.

[0023] Figure 9 An exploded view of the test components at the test station of the test mechanism in this embodiment;

[0024] Figure 10 A three-dimensional schematic diagram of the upper fixing block of the test component of the test station of the test mechanism in the embodiment;

[0025] Figure 11 This is a three-dimensional schematic diagram of the testing status of the testing station of the testing mechanism in the embodiment.

[0026] Figure 12 This is a front view schematic diagram of the test status of the test station of the test mechanism in the embodiment;

[0027] Figure 13 for Figure 12 A cross-sectional view of AA;

[0028] Figure 14 for Figure 13 An enlarged schematic diagram of region B;

[0029] Figure 15 This is a right-side view of the testing status of the testing station in the testing mechanism of the embodiment.

[0030] Figure 16 for Figure 15 A cross-sectional view of CC;

[0031] Figure 17 for Figure 16 An enlarged schematic diagram of region D;

[0032] Figure 18This is a front view schematic diagram of the test mechanism in the embodiment;

[0033] Figure 19 A top view of the testing mechanism for an embodiment;

[0034] Figure 20 A three-dimensional schematic diagram of the testing mechanism located at the unloading station in this embodiment;

[0035] Figure 21 This is a three-dimensional schematic diagram of the testing mechanism located at the unloading station from another angle, as shown in the embodiment.

[0036] Figure 22 A three-dimensional schematic diagram of the lifting and positioning mechanism of the test mechanism in the embodiment;

[0037] Figure 23 A three-dimensional schematic diagram of the testing mechanism located at the full-material detection station in the embodiment;

[0038] Figure 24 This is a three-dimensional schematic diagram of the testing mechanism located at the full material detection station, as shown in the embodiment, from another angle.

[0039] Figure 25 A three-dimensional schematic diagram of the testing mechanism located at the inkjet printing station in this embodiment;

[0040] Figure 26 A three-dimensional schematic diagram of the testing mechanism located at the barcode scanning station, as shown in the embodiment;

[0041] Among them, 1-conveyor line, 101-loading conveyor line, 102-unloading conveyor line, 103-first lifting conveyor mechanism, 104-return conveyor line, 105-second lifting conveyor mechanism, 106-frame, 107-blocking mechanism; 2-tooling assembly, 201-carrier plate, 202-carrier block, 203-positioning plate, 204-first sealing ring, 205-second sealing ring, 2011-carrier plate body, 2012-carrier plate positioning hole, 2013-carrier plate air hole, 2021-carrier block body, 2022-positioning plate groove, 2023-test groove, 2024- 2025-Carrier block vent, 2031-First sealing ring groove, 2032-Positioning plate body, 2033-Capacitor core mounting hole, 2034-Mounting block; 3-Testing station, 301-Testing mounting base plate, 302-Testing mounting top plate, 303-Pressure plate, 304-Panel, 305-Testing upper component, 306-Transfer support pad, 307-Testing pressing mechanism, 308-Panel lifting mechanism, 309-Lateral translation drive mechanism, 310-Multi-channel digital bridge, 311-Pressure controller, 3041-Panel body, 3042-First guide positioning pin 3043-Plate vent, 3044-Plate air distribution hole, 3045-Second sealing ring groove, 3046-Third sealing ring, 3047-Plate pad, 3051-Upper fixing block, 3052-Capacitor core pressing block, 3053-Upper pad, 3054-Probe assembly, 3055-Probe mounting base, 30511-Probe mounting base mounting port, 30512-Pressure block receiving groove, 30521-Pressure block probe hole, 30531-Probe assembly receiving groove, 30541-Lead-out circuit board, 30542-Probe, 30543-Multi-PIN connector, 3 0551-Fixed base probe hole; 4-Capacitor core; 5-Unloading station; 501-Horizontal moving module; 502-Unloading lifting module; 503-Vacuum suction robot; 6-Lifting and positioning mechanism; 601-Lifting mounting plate; 602-Lifting drive component; 603-Lifting plate; 6031-Second guide positioning pin; 7-Full material detection station; 701-Full material detection limit switch; 702-Full material detection lifting mechanism; 8-Coding station; 801-Printhead; 802-Coding linear module; 9-Scanning station; 901-Scanning gun; 902-Scanning mounting bracket. Detailed Implementation

[0042] To enhance understanding of the present invention, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. These embodiments are only used to explain the invention and do not limit the scope of protection of the invention.

[0043] Example

[0044] Please refer to Figures 1 to 26As shown, this embodiment provides a ceramic capacitive pressure sensor core testing mechanism, including a conveyor line 1, a tooling assembly 2 conveyed along the conveyor line 1, and a testing station 3 set on the conveyor line 1; the tooling assembly 2 includes a lower testing assembly; the top side of the lower testing assembly is provided with multiple testing positions for corresponding loading of capacitor cores 4; the testing station 3 includes a support plate 304 and a pressure plate 303; the support plate 304 is used to lift the tooling assembly 2 and provide pressurized gas to the multiple testing positions of the lower testing assembly, thereby providing testing pressure to the capacitor core 4; the bottom side of the pressure plate 303 is equipped with an upper testing assembly 305; the upper testing assembly 305 includes a probe assembly 3054, the upper testing assembly 305 is used to press against the testing positions by the downward pressure of the pressure plate 303, and the probe assembly 3054 is in contact with the leads of the capacitor core 4, thereby providing feedback on the capacitance value of the capacitor core 4 under the testing pressure.

[0045] Refer to Figure 2 As shown, the test station 3 also includes a test mounting base plate 301 and a test mounting top plate 302 mounted above the test mounting base plate 301; the test mounting base plate 301 is equipped with a pallet lifting mechanism 308 for driving the pallet to rise and fall; the test mounting top plate 302 is equipped with a test pressing mechanism 307 for driving the pressure plate 303 to press down; the conveyor line 1 passes between the test mounting base plate 301 and the test mounting top plate 302; the pallet 304 is used to lift up the tooling assembly 2 when it is sent to the test station 3 by the conveyor line 1, so that the tooling assembly 2 is removed from the conveyor line 1.

[0046] Refer to Figure 2 , Figure 11 , Figure 12 and Figure 15 As shown, the test station 3 also includes a translation support pad 306 and a lateral translation drive mechanism 309 for driving the translation support pad 306. The translation support pad 306 is driven to move to the bottom side of the pallet 304 by the lateral translation drive mechanism 309 when the pallet 304 lifts the tooling assembly 2, so that the pallet 304 can withstand pressure when the pressure plate 303 presses down. In order to make the structure compact and easy to install, a pallet pad 3047 is also provided on the bottom side of the pallet 304. When the pallet 304 is not lifted, the translation support pad 306 is located between the pallet 304 and the test mounting base plate 301. When the pallet 304 is lifted, the translation support pad 306 moves to the space between the pallet pad 3047 and the test mounting base plate 301.

[0047] Refer to Figures 3 to 6As shown, the tooling assembly 2 further includes a carrier plate 201 and the test lower assembly mounted on the carrier plate 201; the carrier plate 201 includes a carrier plate body 2011, and the test lower assembly includes a carrier block 202 fixed on the carrier plate body 2011 and a positioning plate 203 for loading capacitor cores; the carrier block 202 includes a carrier block body 2021, and a positioning plate groove 2022 is provided on the top surface of the carrier block body 2021; a plurality of test grooves 2023 are distributed on the bottom surface of the positioning plate groove 2022; the positioning plate 203 includes a positioning plate body 2031, and a capacitor core mounting hole 2032 is provided on the positioning plate body 2031 at a position corresponding to the test groove 2023; a mounting block 2033 is embedded in the capacitor core mounting hole 2032; the capacitor is installed in the mounting block 2033. The core 4; the carrier block body 2021 is also provided with carrier block air holes 2024; the carrier plate body 2011 is also provided with carrier plate air holes 2013; one end of the carrier block air hole 2024 is connected to the carrier plate air hole 2013, and the other end is connected to the corresponding test slot 2023; the positioning plate body 2031 is placed in the positioning plate slot 2022 of the carrier block 202, the capacitor core 4 corresponds to the test slot 2023, and the test slot 2023 constitutes the test position; the support plate 304 includes a support plate body 3041; the support plate body 3041 is provided with support plate air holes 3043, and support plate air distribution holes 3044 connected to the support plate air holes 3043 and corresponding to the carrier plate air holes 2013; the support plate air holes 3043 are used to access high-pressure gas, thereby providing high-pressure gas to the test slot 2023. Specifically, as shown in the figure Figure 18As shown, the test station 3 also includes a pressure controller 311. The air inlet of the pressure controller 311 is connected to a high-pressure gas source, and the output of the pressure controller 311 is connected to the air hole 3043 on the support plate. The pressure controller 311 is used to control the gas pressure that is introduced into the test tank 2023 and acts on the capacitor core 4. In order to ensure that the air hole 3044 on the support plate is connected to the air hole 2013 on the support plate body 2011 of the tooling assembly 2 when the support plate 304 lifts the tooling assembly 2, the support plate body 2011 is provided with a support plate positioning hole 2012; the support plate body 3041 is provided with a first guide positioning pin 3042 at the position corresponding to the support plate positioning hole 2012. In addition, to ensure no air leakage occurs at the vent connection points, a first sealing ring 204 is provided at the vent connection points of the carrier plate body 2011 and the carrier block body 2021, a second sealing ring 205 is provided in the test groove 2023, and a third sealing ring 3046 is provided at the vent connection points of the support plate body 3041 and the carrier plate body 2011. To facilitate the installation of the sealing rings, a first sealing ring groove 2025 is provided on the bottom surface of the carrier block body 2021 near the vent; the first sealing ring 204 is installed in the first sealing ring groove 2025; and a second sealing ring groove 3045 is provided on the top surface of the support plate body 3041 near the vent. The third sealing ring 3046 is installed in the second sealing ring groove 3045; the carrier block body 2021 is fixedly installed on the carrier plate body 2011. After installation, the first sealing ring is in a state of pressure deformation, realizing the sealing connection between the carrier block air hole 2024 and the carrier plate air hole 2013; through the downward pressure of the pressure plate 303 and the support of the support plate 304 (the support of the translation support pad 306), the capacitor core presses down on the second sealing ring to deform it, and the third sealing ring 3046 is deformed under pressure, realizing the formation of a leak-free pressure chamber between the test groove 2023 and the capacitor core, and also realizing the sealing connection between the carrier plate air hole 2013 and the support plate air distribution hole. For details, please refer to Figure 14 and Figure 17 As shown; the sealing ring mentioned above can be an O-ring.

[0048] In this embodiment of a ceramic capacitive pressure sensor core testing mechanism, the positioning plate body 2031 is a metal plate, which prevents the capacitor core from being interfered with by external electric fields during the testing process and improves the accuracy of the test.

[0049] Refer to Figures 7 to 10As shown, the probe assembly 3054 includes a probe 30542 corresponding to the lead of the capacitor core 4; the test upper assembly 305 also includes an upper fixing block 3051 fixedly installed with the pressure plate 303, a capacitor core pressing block 3052 installed on the bottom surface of the fixing block 3051, and a probe fixing seat 3055 installed on the top side of the fixing block 3051; the probe fixing seat 3055 is provided with a fixing seat probe hole 30551 corresponding to the probe 30542; the capacitor core pressing block 3052 is provided with a pressing block probe hole 30521 communicating with the fixing seat probe hole 30551; the bottom end of the probe 30542 of the probe assembly 3054 passes through the fixing seat probe hole 30551 and is located in the pressing block probe hole 30521; as Figure 14 As shown, the capacitor core pressing block 3052 is used to press down along with the upper fixing block 3051 under the downward pressure of the pressing plate 303. The capacitor core pressing block 3052 acts on the capacitor core 4, and the pressing block probe hole 30521 of the capacitor core pressing block 3052 is sleeved on the lead wire of the capacitor core 4, so that the lead wire of the capacitor core 4 contacts the probe 30542 in the pressing block probe hole 30521. Specifically, the upper fixing block 3051 is provided with a probe fixing seat mounting port 30511 at a position corresponding to the probe fixing seat 3055; the bottom end of the probe fixing seat 3055 passes through the probe fixing seat mounting port 30511; the bottom surface of the upper fixing block 3051 is provided with a pressing block receiving groove 30512 at a position corresponding to the capacitor core pressing block 3052; the capacitor core pressing block 3052 is installed in the pressing block receiving groove 30512.

[0050] In this embodiment of the ceramic capacitive pressure sensor core testing mechanism, the probe is a retractable current-voltage type probe, made of beryllium copper plated with gold or brass plated with gold, to ensure the accuracy of the capacitance value test.

[0051] Refer to Figure 9 As shown, the probe assembly 3054 further includes a lead-out circuit board 30541 connected to the probe 30542 and a multi-pin connector 30543 connected to the lead-out circuit board 30541; an upper pad 3053 is also provided between the upper fixing block 3051 and the pressure plate 303; the upper pad 3053 is provided with a probe assembly receiving groove 30531, and the lead-out circuit board 30541 and the multi-pin connector 30543 are installed in the probe assembly receiving groove 30531. Specifically, as... Figure 18 As shown, test station 3 also includes a multi-channel digital bridge 310, which is connected to a multi-pin connector 30543 for simultaneously testing the capacitance values ​​of multiple capacitor cores.

[0052] Refer to Figure 18 and Figure 19As shown, the testing mechanism also includes a coding station 8 and a scanning station 9 located on the feeding side of the testing station 3 on the conveyor line 1. The coding station 8 is used to code the capacitor core 4 on the tooling assembly 2 that is conveyed to the station. The scanning station 9 is used to scan the already coded capacitor core 4 on the tooling assembly 2 that is conveyed to the station. After scanning, the tooling assembly 2 carries the capacitor core 4 into the testing station 3 for testing. Similar to the conveyor line design, this allows the capacitor core to undergo a continuous and accurate process from coding to scanning to testing, ensuring accurate correspondence between the code and the test data.

[0053] Refer to Figure 25 As shown, the coding station 8 includes a coding linear module 802 installed on the conveyor line 1 and a printhead 801 installed on the moving end of the coding linear module 802; the coding linear module 802 is used to drive the printhead 801 to move along the length of the conveyor line 1; the coding station 8 also includes a lifting and positioning mechanism 6 installed under the conveyor line 1; the lifting and positioning mechanism 6 is used to lift the tooling assembly 2 when it is sent from the conveyor line 1 to the coding station 8, so that the tooling assembly 2 is removed from the conveyor line 1; the printhead 801 is used to sequentially code the capacitor core 4 on the tooling assembly 2 under the drive of the coding linear module 802; and then refer to Figure 22 As shown, the lifting and positioning mechanism 6 includes a lifting mounting plate 601 installed on the conveyor line 1, a lifting drive component 602 installed on the lifting mounting plate 601, and a lifting plate 603 installed on the moving end of the lifting drive component 602; the lifting plate 603 is also provided with a second guide positioning pin 6031 for cooperating with the carrier plate positioning hole 2012 of the carrier plate 201. (Refer to...) Figure 26 As shown, the barcode scanning station 9 includes a barcode mounting frame 902 installed on the conveyor line 1 and a barcode scanner 901 installed on the barcode mounting frame 902; the barcode scanner 901 is used to scan each capacitor core 4 flowing through the barcode scanning station 9 in sequence.

[0054] Refer to Figure 18 , Figure 19 , Figure 23 and Figure 24As shown, the testing mechanism also includes a full-material detection station 7 located on the feeding side of the conveyor line 1; the full-material detection station 7 includes a full-material detection lifting mechanism 702 installed above the conveyor line 1, and a full-material detection limit switch 701 fixed to the moving end of the full-material detection lifting mechanism 702; the full-material detection station 7 is used to detect whether the capacitor cores on the tooling assembly 2 conveyed to the station are fully loaded. Specifically, when the tooling assembly 2 is conveyed to the full-material detection station 7, the full-material detection limit switch 701 corresponds one-to-one with the area where the multiple capacitor cores 4 on the tooling assembly 2 should be located. The full-material detection lifting mechanism 702 drives the full-material detection limit switch 701 to press down. When each full-material detection limit switch 701 is turned on, it is considered that the capacitor cores 4 are full.

[0055] Refer to Figure 18 , Figure 19 , Figure 20 and Figure 21 As shown, the conveyor line 1 includes a loading conveyor line 101, a return conveyor line 104, a first lifting conveyor mechanism 103, and a second lifting conveyor mechanism 105. The first lifting conveyor mechanism 103 connects the discharge end of the loading conveyor line 101 and the inlet end of the return conveyor line 104. The second lifting conveyor mechanism 105 connects the inlet end of the loading conveyor line 101 and the discharge end of the return conveyor line 104. A discharge station 5 is also provided at the end of the loading conveyor line 101. A discharge conveyor line 102 is also provided at the discharge station 5. The discharge station 5 includes a horizontally moving module 5 installed on the conveyor line 1. 01. A material unloading and lifting module 502 is installed at the moving end of the horizontal moving module 501, and a vacuum suction robot 503 is installed on the material unloading and lifting module 502; the vacuum suction robot 503 is used to transfer the capacitor core on the tooling assembly 2 that is conveyed to the station from the loading conveyor line 101 to the unloading conveyor line 102 under the drive of the horizontal moving module 501 and the material unloading and lifting module 502; the unloading station 5 also includes a lifting and positioning mechanism 6 installed under the conveyor line 1; the lifting and positioning mechanism 6 is used to lift the tooling assembly 2 when it is sent to the unloading station 5 by the conveyor line 1, so that the tooling assembly 2 is removed from the conveyor line 1. The lifting and positioning mechanism 6 at the unloading station 5 has the same structure as the lifting and positioning mechanism at the inkjet printing station 8.

[0056] The ceramic capacitive pressure sensor core testing mechanism of this embodiment also includes a frame 106, and the corresponding conveyor line and workstation are fixedly installed on the frame 106.

[0057] The ceramic capacitive pressure sensor core testing mechanism of this embodiment also includes a blocking mechanism 107 at each station to block the tooling assembly 2 and position the tooling assembly 2 at the station. The feeding conveyor and the return conveyor are double-speed chain conveyors, and the unloading conveyor is a belt conveyor.

[0058] The ceramic capacitive pressure sensor core testing mechanism of this embodiment also includes a main control cabinet; the main control module includes an industrial computer, a touch screen and control switches, etc., and position sensors are also set at each workstation; the corresponding control mechanism can be selected according to actual needs, and will not be described in detail here.

[0059] This embodiment describes a ceramic capacitive pressure sensor core testing mechanism. The operation process is as follows: After the positioning plate is loaded with the capacitor core, it is placed in the positioning plate slot on the carrier block of the tooling assembly. The tooling assembly carrying the capacitor core flows along the feeding conveyor line and is first stopped by the blocking mechanism at the full-load detection station. Simultaneously, after the position sensor at the full-load detection station senses the inflow of the tooling assembly, the full-load detection lifting mechanism drives the full-load detection limit switch to press down. The full-load detection limit switch corresponds one-to-one with the position of the capacitor core. When each limit switch is activated, it is considered that the capacitor core has filled the tooling assembly. Then, the blocking mechanism at the full-load detection station releases the tooling assembly. The component continues to be conveyed by the feeding conveyor until it is blocked by the blocking mechanism at the inkjet printing station. Simultaneously, the arrival sensor at the inkjet printing station detects the inflow of the tooling component, triggering the lifting and positioning mechanism. The lifting plate rises, and its second guide positioning pin inserts into the positioning hole of the tooling component's carrier plate. The tooling component is lifted by the lifting plate and detached from the feeding conveyor, simultaneously completing its positioning under the action of the second guide positioning pin. After the tooling component is in position, the printhead moves under the drive of the inkjet printing linear module, sequentially printing the batch serial number onto the capacitor core. After printing is complete, the printhead resets, the lifting plate descends, and the tooling component is placed back on the feeding conveyor. Subsequently, the blocking mechanism at the inkjet printing station releases the tooling component, which continues to be conveyed by the feeding conveyor until it is blocked by the blocking mechanism at the barcode scanning station. After no tooling component is found at the subsequent testing station, the blocking mechanism at the barcode scanning station releases it. Simultaneously, as the tooling component passes the barcode scanner, the scanner scans the serial number and transmits it to the industrial control computer for sequential recording and storage. The tooling component continues to be conveyed by the feeding conveyor until it is blocked by the blocking mechanism at the testing station. At the same time, the arrival sensor at the testing station detects the tooling component's inflow, triggering the pallet lifting mechanism. The pallet rises, and the first guide positioning pin of the pallet inserts into the carrier plate of the tooling component for positioning. The tooling assembly is lifted off the feeding conveyor line by the support plate and simultaneously positioned by the first guide pin. After the tooling assembly is in place, the lateral translation drive mechanism is activated, driving the translation support pad to extend under the support plate pad of the tooling assembly. The test pressing mechanism is activated, driving the pressure plate to press down. The test upper assembly is driven to press down, pressing the capacitor core tightly. The second sealing ring under the capacitor core is deformed under pressure, sealing the test chamber. The first and third sealing rings are also deformed under the weight of the upper assembly or the downward pressure of the pressure plate, sealing the vent connection to prevent leakage. At the same time, the lead wire of the capacitor core also comes into contact with the probe.Then, the pressure controller connects to the high-pressure gas source, injecting pressurized gas into the test chamber through the main air hole of the support plate, the air distribution hole of the support plate, the air hole of the carrier plate, and the air hole of the carrier block. The multi-channel digital bridge uses probes to measure and collect the capacitance value of the capacitor core. By injecting gas at different pressures, the capacitance value of the capacitor core at each pressure point is collected. The industrial control computer reads the collected capacitance value and stores it one by one according to the previously stored serial number. After the test is completed, the pressure plate rises, the lateral translation support pad retracts, and the support plate descends. The tooling assembly is placed back on the feeding conveyor line. The blocking mechanism at the test station releases the tooling assembly, and the tooling assembly continues to be transported by the feeding conveyor line until it is blocked by the blocking cylinder at the unloading station. At the same time, the arrival sensor at the unloading station senses the tooling assembly flowing in, and the lifting and positioning mechanism at the unloading station is activated. The lifting plate rises, and the second guide positioning pin of the lifting plate is inserted into the positioning hole of the carrier plate of the tooling assembly. The tooling assembly is lifted up and removed from the feeding conveyor line by the action of the lifting plate. The vacuum suction robot then... Driven by the horizontal moving module and the unloading lifting module, the capacitor core is sucked out and placed into the blister pack on the unloading conveyor line. Once the capacitor core is completely removed, the lifting plate descends, and the tooling assembly is repositioned on the loading conveyor line. The blocking mechanism at the unloading station releases the tooling assembly, which is then fed into the first lifting conveyor mechanism by the loading conveyor line. The first lifting conveyor mechanism sends the tooling assembly into the return conveyor line, and then the second lifting conveyor mechanism sends the tooling assembly without a capacitor core back to the starting end of the loading conveyor line. The blocking mechanism at the starting end of the loading conveyor line keeps the tooling assembly without a capacitor core in place, waiting for a capacitor core to be loaded, before starting the next cycle. Once the blister pack on the unloading conveyor line is full of capacitor cores, the unloading conveyor line stops after a specified distance, waiting for the next blister pack to be filled. In this embodiment, both the loading and unloading conveyors are continuous, using blocking mechanisms, trays, and lifting plates to keep the tooling assembly in place.

[0060] This embodiment of a ceramic capacitive pressure sensor core testing mechanism integrates a lower testing component directly onto a tooling assembly. A support plate provides pressurized gas to the lower component, while a pressure plate drives the upper testing component downwards, bringing the probe into contact with the capacitor core's leads, thus enabling capacitance measurement under pressure. Furthermore, the pressure exerted by the pressure plate on the upper testing component seals the vent holes in the lower component and support plate under the action of a sealing ring, preventing gas leakage and ensuring accurate pressure readings at the testing position. A translational support pad effectively supports the components on it. The positioning plate of the tooling assembly facilitates the fixing of the capacitor core, and its metal material reduces the influence of external electric fields on the capacitance measurement. A single conveyor line sequentially sets up a coding station, a scanning station, and a testing station, ensuring a one-to-one correspondence between the serial number and the test data. The conveyor line circulates the tooling assembly, improving conveying efficiency.

[0061] This embodiment presents a ceramic capacitive pressure sensor core testing mechanism, which features streamlined testing to improve testing efficiency. It employs multi-station tooling components, allowing for the testing of multiple capacitive cores at once, meeting the needs of batch testing. The automated testing operation further enhances testing efficiency and satisfies the testing requirements of large-scale factories.

[0062] The above embodiments should not limit the present invention in any way. All technical solutions obtained by equivalent substitution or equivalent conversion fall within the protection scope of the present invention.

Claims

1. A ceramic capacitive pressure sensor core testing mechanism characterized by: The testing mechanism comprises a conveying line, a tooling assembly conveyed along the conveying line, and a testing station arranged on the conveying line; the tooling assembly comprises a testing lower assembly; a top side of the testing lower assembly is provided with a plurality of testing sites for corresponding loading of capacitor cores; the testing station comprises a supporting plate and a pressing plate; the supporting plate is used for lifting the tooling assembly and providing corresponding pressure gas for the plurality of testing sites of the testing lower assembly, thereby providing testing pressure for the capacitor cores; a bottom side of the pressing plate is provided with a testing upper assembly; the testing upper assembly comprises a probe assembly, and is used for being pressed against the testing sites by the pressing force of the pressing plate, and the probe assembly is in contact with the lead wires of the capacitor cores, thereby feeding back corresponding capacity values of the capacitor cores under the testing pressure; The testing station further comprises a testing installation bottom plate and a testing installation top plate arranged above the testing installation bottom plate; the testing installation bottom plate is provided with a supporting plate lifting mechanism for driving the supporting plate to lift; the testing installation top plate is provided with a testing lower pressing mechanism for driving the pressing plate to press down; The conveying line is arranged between the testing installation bottom plate and the testing installation top plate; the supporting plate is used for lifting the tooling assembly when the tooling assembly is conveyed to the testing station by the conveying line, so that the tooling assembly is separated from the conveying line; The testing station further comprises a lateral translation driving mechanism for driving a translation supporting pad to laterally translate; the translation supporting pad is used for being driven by the lateral translation driving mechanism to move to the bottom side of the supporting plate when the supporting plate lifts the tooling assembly, thereby supporting the supporting plate to bear the pressure when the pressing plate presses down; The tooling assembly further comprises a supporting plate and the testing lower assembly arranged on the supporting plate; the supporting plate comprises a supporting plate body, and the testing lower assembly comprises a supporting block fixed on the supporting plate body and a positioning plate for loading the capacitor cores; the supporting block comprises a supporting block body, and a top surface of the supporting block body is provided with a positioning plate embedding groove; a bottom surface of the positioning plate embedding groove is distributed with a plurality of testing grooves; the positioning plate comprises a positioning plate body, and the positioning plate body is provided with capacitor core mounting holes at positions corresponding to the testing grooves; mounting blocks are embedded in the capacitor core mounting holes; the capacitor cores are mounted in the mounting blocks; the supporting block body is further provided with a supporting block gas hole; the supporting plate body is further provided with a supporting plate gas hole; one end of the supporting block gas hole is in communication with the supporting plate gas hole, and the other end is open to the corresponding testing groove; the positioning plate body is placed in the positioning plate embedding groove of the supporting block, the capacitor cores correspond to the testing grooves, and the testing grooves constitute the testing sites; the supporting plate comprises a supporting plate body; the supporting plate body is provided with a supporting plate gas hole and a supporting plate gas distribution hole in communication with the supporting plate gas hole and corresponding to the supporting plate gas hole; the supporting plate gas hole is used for connecting high-pressure gas, thereby providing high-pressure gas for the testing grooves; The carrier plate body is provided with a carrier plate positioning hole; the carrier plate body is provided with a first guide positioning pin at a position corresponding to the carrier plate positioning hole; the carrier plate body and the carrier block body are provided with a first sealing ring at a gas hole joint; a second sealing ring is arranged in the test slot; the carrier plate body and the carrier plate body are provided with a third sealing ring at a gas hole joint; a first sealing ring groove is arranged on the bottom surface of the carrier block body near the gas hole; the first sealing ring is installed in the first sealing ring groove; a second sealing ring groove is arranged on the top surface of the carrier plate body near the gas hole, and the third sealing ring is installed in the second sealing ring groove; The test down mechanism is started, the pressing plate is driven to press down, the test upper assembly is driven to press down, the capacitor core is pressed tightly, the second sealing ring under the capacitor core is deformed under pressure, the test cavity is sealed, the first sealing ring and the third sealing ring seal the gas hole joint, and pressure gas is injected into the test cavity through the carrier plate main gas hole, the carrier plate branch gas hole, the carrier plate gas hole and the carrier block gas hole; by injecting gas with different pressures, the capacity value of the capacitor core at each pressure point is collected by the probe assembly.

2. The ceramic capacitor pressure sensor core testing mechanism according to claim 1, characterized in that: The probe assembly includes probes corresponding to the leads of the capacitor core; the test upper assembly further includes an upper fixed block fixedly installed with the pressing plate, a capacitor core pressing block installed on the bottom surface of the upper fixed block, and a probe fixed seat installed on the top side of the upper fixed block; the probe fixed seat is provided with fixed seat probe holes corresponding to the probes; the capacitor core pressing block is provided with pressing block probe holes communicating with the fixed seat probe holes; the bottom end of the probe of the probe assembly is located in the pressing block probe hole after passing through the fixed seat probe hole; the capacitor core pressing block is used for downward movement of the upper fixed block under the downward action of the pressing plate, the capacitor core pressing block acts on the capacitor core, and the pressing block probe hole of the capacitor core pressing block is sleeved on the lead of the capacitor core, so that the lead of the capacitor core contacts the probe in the pressing block probe hole.

3. The ceramic capacitor pressure sensor core testing mechanism of claim 2, wherein: The probe assembly further includes a lead-out circuit board connected with the probes, and a multi-PIN connector connected with the lead-out circuit board; the upper fixed block and the pressing plate are further provided with an upper cushion block; the upper cushion block is provided with a probe assembly accommodating groove, and the lead-out circuit board and the multi-PIN connector are installed in the probe assembly accommodating groove.

4. The ceramic capacitor pressure sensor core testing mechanism of claim 1, wherein: The test mechanism further includes a code spraying station and a code scanning station arranged on the conveying line on the feeding side of the test station; the code spraying station is used for spraying codes on the capacitor core of the tool assembly conveyed to the station; the code scanning station is used for scanning the codes of the capacitor core of the tool assembly conveyed to the station.

5. A ceramic capacitor pressure sensor core testing mechanism according to claim 4, characterized in that: The code spraying station comprises a code spraying linear module installed on the conveying line and a spraying head installed on the moving end of the code spraying linear module; the code spraying linear module is used to drive the spraying head to move along the length direction of the conveying line; the code spraying station further comprises a jacking positioning mechanism installed under the conveying line; the jacking positioning mechanism is used to jack up when the tool assembly is sent to the code spraying station from the conveying line, so that the tool assembly is separated from the conveying line; the spraying head is used to spray codes on the capacitor cores on the tool assembly in sequence under the driving of the code spraying linear module; the code scanning station comprises a code scanning mounting frame installed on the conveying line and a code scanning gun installed on the code scanning mounting frame; the code scanning gun is used to scan codes on each capacitor core flowing through the code scanning station in sequence.

6. The ceramic capacitor pressure sensor core testing mechanism of claim 1, wherein: The testing mechanism further comprises a full material detection station arranged on the feeding side of the conveying line; the full material detection station comprises a full material detection lifting mechanism installed above the conveying line and a full material detection travel switch fixed on the moving end of the full material detection lifting mechanism; the full material detection station is used to detect whether the capacitor cores on the tool assembly sent to the station are full.

7. A ceramic capacitor pressure sensor core testing mechanism according to any one of claims 1 to 6, characterized in that: The conveying line comprises a feeding conveying line, a returning conveying line, a first lifting conveying mechanism and a second lifting conveying mechanism; the first lifting conveying mechanism is used to connect the discharging end of the feeding conveying line and the feeding end of the returning conveying line; the second lifting conveying mechanism is used to connect the feeding end of the feeding conveying line and the discharging end of the returning conveying line; the end of the feeding conveying line is further provided with a discharging station; the conveying line is further provided with a discharging conveying line at the discharging station; the discharging station comprises a horizontal moving module installed on the conveying line, a discharging lifting module installed on the moving end of the horizontal moving module and a vacuum suction manipulator installed on the discharging lifting module; the vacuum suction manipulator is used to transfer the capacitor cores on the tool assembly sent to the station from the feeding conveying line to the discharging conveying line under the driving of the horizontal moving module and the discharging lifting module; the discharging station further comprises a jacking positioning mechanism installed under the conveying line; the jacking positioning mechanism is used to jack up when the tool assembly is sent to the discharging station from the conveying line, so that the tool assembly is separated from the conveying line.

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