A test apparatus for testing spark voltage

Abstract

The application discloses a test device for testing spark voltage, and relates to the field of pulse igniter testing, which comprises a detection table, a horizontal screw slide rail is arranged on the upper end of the detection table, a bearing box is arranged on the sliding part of the horizontal screw, a pulse igniter body is arranged on the inner side of the bearing box, a plurality of positioning seats are fixedly connected to the inner bottom of the bearing box, two high-voltage output terminals and two groups of pin parts arranged in front and back are arranged on the pulse igniter body, each group of pin parts comprises, from left to right, a grounding pin, a power supply pin, a solenoid valve pin and a thermocouple pin in sequence, and a test mechanism is arranged on the detection table. The device adopts the logic of grounding first and then connecting the remaining contacts and the electric contact, thereby improving the safety and accuracy of the test. In addition, after the test is completed, the capacitor charge is rapidly discharged by using the structure of rapid discharge, then the remaining contacts are connected, and finally the grounding connection is released, so that the capacitor charge is rapidly and comprehensively released.

Description

Technical Field

[0001] This invention relates to the field of pulse igniter testing, and more particularly to a testing device for testing spark voltage. Background Technology

[0002] Pulse igniters are widely used in gas appliances such as gas stoves, water heaters, and wall-hung boilers. One of their core performance indicators is spark voltage, which is whether the igniter can generate a sufficiently high voltage to break down the air gap and reliably ignite the gas at the moment of discharge. Therefore, conducting spark voltage tests on pulse igniters on the production line is a crucial process to ensure product quality.

[0003] Existing spark voltage testing equipment typically uses a method of directly connecting the igniter to a high-voltage circuit. Current testing methods are generally manual. If operators make mistakes during wiring, such as connecting the power supply and grounding module first, it can easily damage the equipment or igniter, and also cause electric shock. Furthermore, igniters usually contain energy storage capacitors. After the test, these capacitors retain a large amount of residual charge, which takes a long time to slowly release into the air. If someone accidentally touches the capacitor during this period, such as during the inspection of defective products, there is a high risk of electric shock. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a test device for testing spark voltage. This device adopts a logic of grounding first and then connecting the remaining contacts and the electrical contacts, which improves the safety and accuracy of the test. In addition, after the test is completed, the capacitor charge is first discharged quickly using a fast discharge structure, and then the grounding connection is finally disconnected after contacting the remaining contacts, thus realizing the rapid and complete release of the capacitor charge.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A testing device for testing spark voltage includes a testing platform. A horizontal lead screw slide rail is mounted on the upper end of the testing platform. A carrier box is mounted on the sliding part of the horizontal lead screw slide rail. A pulse igniter body is placed inside the carrier box. Multiple positioning seats are fixedly connected to the bottom of the carrier box. The pulse igniter body is provided with two high-voltage output terminals and two sets of pins arranged front and back. Each set of pins, from left to right, consists of a ground pin, a power pin, a solenoid valve pin, and a thermocouple pin. A testing mechanism includes a support frame installed in the middle of the testing platform. A U-shaped mounting plate is mounted on the support frame via a lifting mechanism. Two... The system consists of two sets of movable support components, each set comprising four support rods. Each support rod has a rolling contact mounted on its inner lower end. The two sets of movable support components are guided by a sliding mechanism, allowing the four front support rods to move backward from left to right and the four rear support rods to move forward from left to right when the lifting mechanism moves downward. This enables the grounding pin, power pin, solenoid valve pin, and thermocouple pin to be sequentially connected to the analog circuit module. Two junction boxes are located at the lower end of the U-shaped mounting plate. Each junction box has a detection contact mounted on its inner top. When the lifting mechanism reaches its lowest position, the two detection contacts engage with the two high-voltage output terminals.

[0006] Preferably, a display control panel is installed on the upper end of the testing platform. The display control panel integrates an analog circuit module and a testing circuit module. Multiple rolling contactors are electrically connected to the analog circuit module, and two testing contacts are electrically connected to two testing circuit modules.

[0007] Preferably, a loading / unloading robot is installed on the upper front side of the inspection platform, and a defective product robot is installed on the upper rear side of the inspection platform.

[0008] Preferably, the lifting mechanism includes a hydraulic telescopic rod installed on the upper end of the support frame. The telescopic end of the hydraulic telescopic rod is fixedly connected to a lifting plate. Two first guide rods are symmetrically fixedly connected to the upper end of the lifting plate. The upper ends of the two first guide rods pass through the horizontal part of the support frame and are slidably connected. The lower end of the lifting plate is fixedly connected to the upper end of the U-shaped mounting plate.

[0009] Preferably, the sliding guide mechanism includes a movable horizontal plate slidably connected to the upper end of the U-shaped mounting plate, and a guide groove is provided on the upper end of the movable horizontal plate. The guide groove is composed of a horizontal part and an inclined part. Each of the support rods is fixedly connected to a T-shaped rod at its upper end, and each T-shaped rod is fixedly connected to a sliding rod at its upper end. Each sliding rod is slidably connected inside a corresponding guide groove. The U-shaped mounting plate has multiple slots, and each T-shaped rod can slide back and forth inside the slot.

[0010] Preferably, two second guide rods are fixedly connected between the inner walls of the two sides of the U-shaped mounting plate, and a movable seat is provided through the two second guide rods. The lower end of the movable seat is fixedly connected to the upper end of the movable cross plate. A threaded rod is rotatably connected between the inner walls of the two sides of the U-shaped mounting plate. The threaded rod passes through the movable seat and is threadedly connected to the movable seat.

[0011] Preferably, the left end of the threaded rod extends to the outside and is equipped with a gearbox. The input shaft of the gearbox is fixedly connected to a gear, and a rack is fixedly connected between the test bench and the support frame. The rack and gear cooperate with each other.

[0012] Preferably, it also includes a limiting mechanism, which includes a vertical plate fixedly connected to the upper end of the carrier box, a driven slide plate that can slide left and right is provided through the vertical plate, an inclined surface is provided at the lower right end of the driven slide plate, the driven slide plate and the vertical plate are elastically connected by a first spring, and a rubber layer is provided on the inner bottom surface of the carrier box.

[0013] Preferably, it also includes a triggering mechanism, which includes two arc-shaped elongated holes symmetrically opened on the driven slide plate, a fixing strip fixedly connected to one side of the moving cross plate, and an L-shaped traction rod fixedly connected to the other side of the fixing strip, the vertical part of the L-shaped traction rod cooperating with the two arc-shaped elongated holes.

[0014] Preferably, the lower end of the U-shaped mounting plate is fixedly connected to a connecting seat, and the lower ends of the connecting seat are fixedly connected to two second springs. The other ends of the two second springs are fixedly connected to a U-shaped frame. A T-shaped guide strip is fixedly connected between the two U-shaped frames. The T-shaped guide strip passes through the connecting seat and is slidably connected. The lower end of the U-shaped frame is fixedly connected to two junction boxes. The left side of the junction box on the left is fixedly connected to an upward-sloping wedge block. The wedge block cooperates with the inclined surface. Both junction boxes have elastic discharge contacts installed on their left side walls. The two discharge contacts are electrically connected to the ground through two grounding circuits.

[0015] Compared with the prior art, the beneficial effects of this invention are as follows: 1. This invention uses multiple sets of support rods to move in opposite directions, so that the rolling contact parts connect to the eight pins of the workpiece in a preset order. It also uses a simulation circuit module to completely replicate the actual circuit logic and load conditions of the workpiece on the gas equipment, thus constructing a test environment consistent with the actual use state, making the test results more realistic and reliable.

[0016] 2. This invention uses a robotic arm to automatically grab workpieces and place them in a carrier box. The positioning seat and the bottom of the workpiece engage to achieve initial precise positioning, effectively preventing workpiece position shift during transport and testing. Through the linkage of the trigger mechanism, the driven slide plate, on the inclined surface, works with the rubber layer inside the carrier box to perform secondary clamping and positioning of the workpiece. During testing, the workpiece position is completely fixed, preventing loosening and displacement, further improving testing stability and accuracy, and ensuring the accuracy of dual-parameter testing data.

[0017] 3. During the reset process, the present invention uses a wedge block to push against the driven sliding plate, forcing the entire junction box to move to the right, so that the discharge contact contacts the high-voltage terminal to complete the discharge of residual high voltage. The elastic pressure of the discharge contact can eliminate the micro-unevenness of the metal contact surface, form more effective conductive points, improve the residual discharge speed, and ensure that the workpiece is safe and free of residual high voltage after inspection.

[0018] 4. This invention strictly follows the logic of grounding first and then connecting the other contacts and the electrical contacts. When power is off, the logic of disconnecting the high voltage detection terminal first and then the low voltage function pin can avoid the occurrence of residual charge in the capacitor and improve the reliability and safety of the device operation.

[0019] 5. This invention integrates automatic feeding, precise positioning, dual-parameter synchronous detection, safety reset, and automatic sorting of good and defective products into one unit. It can perform batch workpiece inspection in a cyclical and repetitive manner, significantly reducing manual intervention and operational errors, and improving the overall automation level and capacity of the pulse igniter production and inspection line. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a test device for testing spark voltage proposed in this invention; Figure 2 for Figure 1 Front view diagram; Figure 3 for Figure 1 A schematic diagram after removing the inspection station, loading / unloading robot, defective product robot, and display control panel; Figure 4 for Figure 3 A schematic diagram of the pulse igniter body arriving at the testing station; Figure 5 A schematic diagram showing the pulse igniter body placed inside the carrier box; Figure 6 This is a schematic diagram of the pulse igniter body; Figure 7 for Figure 4 Rear view diagram; Figure 8 for Figure 7 Enlarged view of point A; Figure 9This is a schematic diagram of the test mechanism; Figure 10 for Figure 9 A view taken from below; Figure 11 for Figure 9 Cross-sectional view; Figure 12 for Figure 11 Top view; Figure 13 for Figure 11 Schematic diagram after removing the two sets of movable support components; Figure 14 This is a connection diagram of one of the support rods, T-shaped rods, sliding rods, and rolling electrical connectors; Figure 15 This diagram shows the connection between the U-shaped frame and the electrical junction box, among other structures. Figure 16 for Figure 15 Cross-sectional view.

[0021] In the diagram: 1. Inspection table; 2. Loading / unloading robot; 3. Defective product robot; 4. Display control panel; 5. Horizontal lead screw slide rail; 6. Carrier box; 7. Support frame; 8. Hydraulic telescopic rod; 9. Lifting plate; 10. First guide rod; 11. U-shaped mounting plate; 12. Positioning seat; 13. Vertical plate; 14. Driven sliding plate; 15. Arc-shaped elongated hole; 16. First spring; 17. Inclined surface; 18. Rack; 19. Gearbox; 20. Gear; 21. L-shaped traction rod; 22. Connecting seat; 23. Fixing strip; 24. Support rod; 25. Strip-shaped opening; 26. Discharge contact; 27. Moving cross plate; 28. Guide groove; 29. ​​Moving seat; 30. Threaded rod; 31. Second guide rod; 32. T-shaped rod; 33. Sliding rod; 34. Rolling electrical connector; 35. U-shaped frame; 36. Second spring; 37. T-shaped guide strip; 38. Electrical connector box; 39. Wedge block; 40. Detection contact. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0023] This invention is used to test the voltage and frequency of electric sparks in pulse igniters. During the test, an intelligent acquisition sensor is used to achieve calibration and noise reduction, which improves the accuracy of the actual test. In addition, an Internet of Things (IoT) data transmission module is set up so that all test data is uploaded to the cloud IoT management platform in real time for convenient centralized management. The overall test can be automated and the test logic is relatively safe.

[0024] Reference Figures 1-16A testing device for testing spark voltage includes a testing platform 1. A loading / unloading robot 2 is installed on the upper front side of the testing platform 1, and a defective robot 3 is installed on the upper rear side of the testing platform 1. The loading / unloading robot 2 is responsible for automatically loading the pulse igniter body and unloading the good products after the test is completed. The defective robot 3 is specifically designed to accurately pick up and sort defective workpieces that fail the dual parameter test of spark voltage and spark frequency, replacing manual operation, effectively avoiding the operational errors of manual loading / unloading and sorting, and at the same time greatly improving the degree of automation of the equipment and reducing the labor intensity of manual labor. A display control panel 4 is installed on the upper end of the testing platform 1, and a horizontal lead screw slide rail 5 is installed on the upper end of the testing platform 1. The sliding part of the horizontal lead screw slide rail 5 is equipped with a carrier box 6. The pulse igniter body is placed inside the carrier box 6. Multiple positioning seats 12 are fixedly connected to the bottom of the carrier box 6. The multiple positioning seats 12 are adapted and engaged with the bottom of the pulse igniter body to realize the precise positioning of the workpiece, avoid the workpiece displacement during the test, and ensure the accuracy of synchronous detection of spark voltage and spark frequency. The pulse igniter body is provided with two high-voltage output terminals and two sets of pins arranged in front and behind. Each set of pins consists of a ground pin, a power pin, a solenoid valve pin, and a thermocouple pin from left to right. By precisely energizing each set of pins, the actual working conditions of the pulse igniter can be simulated, providing real test conditions for the equipment to synchronously detect ignition spark voltage and ignition ejection frequency, and ensuring that the test data is consistent with the actual use. The system also includes a testing mechanism, which includes a support frame 7 installed in the middle of the testing platform 1. The support frame 7 is equipped with a U-shaped mounting plate 11 via a lifting mechanism. The lifting mechanism includes a hydraulic telescopic rod 8 installed on the upper end of the support frame 7. The telescopic end of the hydraulic telescopic rod 8 is fixedly connected to a lifting plate 9. Two first guide rods 10 are symmetrically fixedly connected to the upper end of the lifting plate 9. The upper ends of the two first guide rods 10 penetrate the horizontal part of the support frame 7 and are slidably connected. The first guide rods 10 play a role in precise guidance and limiting and preventing deviation, which can effectively prevent the U-shaped mounting plate 11 from tilting, shifting, or jamming during the lifting process, and ensure that the accuracy of each lifting displacement is consistent. The lower end of the lifting plate 9 is fixedly connected to the upper end of the U-shaped mounting plate 11. When the lifting mechanism is working, the lifting plate 9 and the bottom U-shaped mounting plate 11 are vertically lifted as a whole by the extension and retraction of the hydraulic telescopic rod 8. The U-shaped mounting plate 11 has two sets of movable support components below it. Each set of support components consists of four support rods 24. A rolling contact component 34 is installed on the inner side of the lower end of each support rod 24. The rolling contact component 34 is specifically composed of a wear-resistant conductive roller, an integrated conductive ring, and a base. The conductive roller is a contact component that directly contacts the igniter pins. The conductive ring is nested and assembled at the end of the conductive roller, ensuring stable conductivity with the internal wires of the analog circuit module, achieving dynamic conductive transmission. The analog circuit module is a real-world simulation circuit specifically adapted for pulse igniters. Specifically, it includes a high-precision regulated power supply simulation unit, a grounding circuit simulation unit, a solenoid valve real load simulation unit, a thermocouple signal feedback simulation unit, a working condition matching and adjustment unit, and a power load unit. It completely replicates the real circuit logic and load conditions of the pulse igniter's complete set of equipment, and can accurately match the power supply, signal, and load requirements of the igniter's eight pins (four in each group). This module is equipped with a matching load consistent with the actual terminal equipment, highly restoring the real load working scenario of the pulse igniter on stoves and gas equipment, and closely matching the actual usage conditions. After the rolling contact 34 is sequentially connected to the grounding pin, power pin, solenoid valve pin, and thermocouple pin, the simulation circuit module can construct a standard stable grounding loop for the equipment through the grounding unit. The rated standard operating voltage of the equipment is output through the regulated power supply unit to provide stable standby and operating power for the igniter. At the same time, the solenoid valve simulation unit is connected to the equivalent load of a real solenoid valve to simulate the solenoid valve engagement and standby operating load of the whole machine. The thermocouple simulation unit provides real-time feedback of the normal operating temperature reference signal of the equipment. It works in conjunction with the power load unit to match the actual operating power of the whole machine. It comprehensively simulates the entire process of the igniter's standby, waiting to be triggered, and ignition under load on the whole machine, providing a real and reliable real-world electrical condition for subsequent accurate detection of spark voltage and frequency synchronization. The display control panel 4 has a built-in IoT data transmission module, which can realize the functions of setting test parameters, controlling test start and stop, real-time synchronous data acquisition of spark voltage and spark frequency, real-time display of dual parameters, alarm for unqualified data, and data storage and export. All test data are uploaded to the cloud IoT management platform in real time. In addition, the display control panel 4 is also equipped with two sets of control switches, which are used to trigger the testing of two sets of parts respectively. Two detection contacts 40 are electrically connected to two detection circuit modules. A smart sensor for acquiring detection signals is installed at the front end of each detection circuit module to intelligently reduce noise and calibrate voltage and frequency signals, improving the accuracy of the acquisition. The core of each detection circuit module consists of a high-voltage attenuation rod, an isolated high-voltage probe, a high-speed digital oscilloscope, a timing synchronous acquisition motherboard, and a data transmission processing unit. A dedicated high-voltage attenuation rod is configured as the front-end high-voltage input component. The high-voltage attenuation rod directly connects to the detection contacts 40 to receive the instantaneous high-voltage spark signal generated by the high-voltage output terminal of the pulse igniter. Utilizing the fixed attenuation ratio (high-multiplication linear attenuation characteristic) of the high-voltage attenuation rod, the instantaneous dangerous high voltage and transient pulse high voltage signal of the igniter (thousands of volts) are absorbed. The signal undergoes lossless voltage reduction and impedance matching to convert the ultra-high voltage signal into a low-voltage linear signal that can be safely recognized by the instrument. After being matched and regulated by an attenuator, the signal is transmitted to an isolated high-voltage probe. The high-voltage probe has electrical isolation and electromagnetic shielding functions, which can isolate the signal noise caused by circuit noise, power frequency interference, and load fluctuations under load conditions, filter out invalid jitter waveforms, and ensure that the high-voltage signal is pure and distortion-free. Finally, the normalized standard high-voltage signal is connected to a high-speed digital oscilloscope. The digital oscilloscope accurately captures the voltage peak, spark sustaining voltage, and voltage fluctuation curve at the moment of each spark breakdown through high-speed waveform sampling, and completely records all voltage parameters of a single ignition spark, realizing accurate measurement of high-voltage spark voltage. Relying on the spark pulse waveforms synchronously acquired by the high-voltage attenuation rod and the high-voltage probe, the high-speed digital oscilloscope activates the high-frequency pulse acquisition mode to capture the independent pulse waveforms generated by each air breakdown ignition in real time. It automatically identifies the valid ignition spark signals, filters out false pulses, weak leakage current fluctuations, and load interference pulses during the test process, and avoids invalid counts. The oscilloscope uses a microsecond-level time axis as a reference to accurately record the generation time of each valid spark. By calculating the total number of valid ignition pulses per unit time and the time interval between two adjacent sparks, combined with the built-in calculation algorithm, the actual spark emission frequency and ignition frequency stability of the pulse igniter are accurately calculated.

[0025] Two sets of movable support components, through a sliding guide mechanism, allow the four front support rods 24 to move backward from left to right and the four rear support rods 24 to move forward from left to right when the lifting mechanism moves downward. This enables the grounding pin, power pin, solenoid valve pin, and thermocouple pin to be connected to the analog circuit module in sequence. This structure enables automated and precise connection of multiple pins of the pulse igniter, accurately restoring the actual working circuit state of the igniter, providing a circuit foundation for continuous and stable ignition, ensuring continuous spark generation, and replacing manual wiring operations. Through the opposite staggered movement of the front and rear support rods 24, each set of pins can be precisely matched and fitted, avoiding problems such as abnormal sparks, voltage fluctuations, and frequency acquisition failures caused by incorrect pin connection, poor contact, and loose connection. It can fully realize the logic of grounding first and then connecting the other contacts and the power contacts, improving the safety and accuracy of the test, and effectively avoiding the safety hazards of human error and detection distortion. The sliding guide mechanism includes a movable horizontal plate 27 slidably connected to the upper end of the U-shaped mounting plate 11. A guide groove 28 is formed at the upper end of the movable horizontal plate 27, and each guide groove 28 consists of a horizontal portion and an inclined portion. A T-shaped rod 32 is fixedly connected to the upper end of each support rod 24, and a sliding rod 33 is fixedly connected to the upper end of each T-shaped rod 32. Each sliding rod 33 is slidably connected inside the corresponding guide groove 28. Multiple slots 25 are formed on the U-shaped mounting plate 11, and each T-shaped rod 32 can slide back and forth within the slot 25. The sliding guide mechanism relies on the horizontal and inclined components of the guide groove 28. The combined structure can convert the horizontal displacement of the moving horizontal plate 27 into the forward and backward displacement of the support rod 24. The strip opening 25 provides a limiting sliding space for the T-shaped rod 32, ensuring that each support rod 24 moves synchronously according to the preset trajectory. That is, as the moving horizontal plate 27 moves to the right, multiple sliding rods 33 are guided to move in sequence, completing the contact between the rolling contact 34 and the corresponding functional pin, and applying a small amount of pressure. The use of this structure can ensure that after the rolling contact 34 is in complete contact with the functional pin and pressure is applied, the lifting mechanism continues to move, and the applied pressure will not change, improving the stability of actual use. Two second guide rods 31 are fixedly connected between the inner walls of the two sides of the U-shaped mounting plate 11. A movable seat 29 is provided through both second guide rods 31. The lower end of the movable seat 29 is fixedly connected to the upper end of the movable cross plate 27. A threaded rod 30 is rotatably connected between the inner walls of the two sides of the U-shaped mounting plate 11. The threaded rod 30 passes through the movable seat 29 and is threadedly connected to the movable seat 29. The left end of the threaded rod 30 extends to the outside and is equipped with a gearbox 19. A gear 20 is fixedly connected to the input shaft of the gearbox 19. 9 is an accelerator that can increase the output speed of the input shaft. In this scheme, it is used to adjust the speed to meet the requirements of the scheme. The rack 18 and the gear 20 cooperate. During the operation, when the U-shaped mounting plate 11 moves down with the lifting mechanism, the gear 20 rolls and meshes along the fixed rack 18, driving the threaded rod 30 to rotate synchronously, thereby driving the moving seat 29 to slide horizontally along the second guide rod 31, driving the moving cross plate 27 to move synchronously, providing power for the alignment movement of the support rod 24. The entire process relies on the lifting action to achieve mechanical linkage, without the need for an additional motor drive.

[0026] The device also includes a limiting mechanism, which includes a vertical plate 13 fixedly connected to the upper end of the carrier box 6. A driven slide plate 14 that can slide left and right is provided through the vertical plate 13. An inclined surface 17 is provided at the lower right end of the driven slide plate 14. The driven slide plate 14 and the vertical plate 13 are elastically connected by a first spring 16. A rubber layer is provided on the inner bottom surface of the carrier box 6. The limiting mechanism is used to perform secondary compression and limiting on the pulse igniter body during the test.

[0027] The system also includes a triggering mechanism, which comprises two arc-shaped elongated holes 15 symmetrically opened on the driven slide plate 14. A fixing strip 23 is fixedly connected to one side of the moving horizontal plate 27, and an L-shaped traction rod 21 is fixedly connected to the other side of the fixing strip 23. The vertical part of the L-shaped traction rod 21 cooperates with the two arc-shaped elongated holes 15. During the downward and rightward movement of the moving horizontal plate 27, the two L-shaped traction rods 21 can be driven. When the L-shaped traction rod 21 is inserted into the corresponding arc-shaped elongated hole 15 and moves to the right and downward, the driven slide plate 14 can be driven to move to the right. By utilizing the cooperation between the inclined surface 17 and the rubber layer, the pulse igniter body can be pressurized and blocked from above, thereby limiting the position of the pulse igniter body.

[0028] The lower end of the U-shaped mounting plate 11 is provided with two junction boxes 38. Each junction box 38 has a detection contact 40 installed on its inner top. When the lifting mechanism moves to its lowest position, the two detection contacts 40 contact the two high-voltage output terminals. A connecting seat 22 is fixedly connected to the lower end of the U-shaped mounting plate 11. Second springs 36 are fixedly connected to both sides of the lower end of the connecting seat 22. The other ends of the two second springs 36 are jointly fixedly connected to a U-shaped frame 35. A T-shaped guide strip 37 is fixedly connected between the two U-shaped frames 35, and the T-shaped guide strip 37 passes through the connecting seat. 22, and sliding connection, the lower end of the U-shaped frame 35 is fixedly connected to two junction boxes 38, the left side of the junction box 38 located on the left is fixedly connected to an upward-sloping wedge block 39, the wedge block 39 cooperates with the inclined surface 17, and the left side wall of each of the two junction boxes 38 is equipped with a flexible discharge contact 26, the two discharge contacts 26 are respectively connected to the ground through two grounding circuits. Specifically, as the connecting seat 22 moves down with the U-shaped mounting plate 11, the driven slide plate 14 also moves to the right. When the connecting seat 22 moves down completely, the two junction boxes at this time Box 38 is vertically positioned in the mounting slots of the two high-voltage terminals. Simultaneously, the driven slide plate 14 moves to the right until its right end face is directly above the wedge block 39. Subsequently, as the U-shaped frame 35 moves back, the wedge block 39 also moves back along with the junction box 38. At the same time, the two L-shaped traction rods 21 move upwards and to the left. However, due to the arc-shaped elongated hole 15 on the driven slide plate 14, in the initial stage of the L-shaped traction rod 21 moving to the left, it does not contact the left side of the arc-shaped elongated hole 15 and cannot drive the entire driven slide plate 14 to move to the left. Therefore, the wedge block 39... The upward movement will contact the inclined surface 17 of the driven slide plate 14. Since the driven slide plate 14 has a large contact friction with the pulse igniter body, it is difficult for it to move under this resistance, forcing the whole consisting of the two junction boxes 38 and the U-shaped frame 35 to move to the right, so that the discharge contact 26 contacts the high-voltage terminal. Since the discharge contact 26 has a certain elasticity, it will form a certain pressure with the high-voltage terminal. This pressure can eliminate the microscopic unevenness and grooves on the metal contact surface, forming more effective conductive points, thereby further improving the residual power release speed. It is important to note that this grounding circuit is a high-speed grounding circuit, unlike ordinary grounding lines. It adopts a low-impedance, high-current conduction circuit design, with a fast conduction rate and minimal discharge resistance. It can quickly and thoroughly discharge the residual charge adsorbed in the high-voltage energy storage capacitor inside the pulse igniter. After the single spark voltage and spark frequency synchronous detection test is completed, the discharge contact 26 is continuously connected to the high-voltage output terminal of the igniter. Utilizing the extremely fast conduction characteristics of the high-speed grounding circuit, the residual high-voltage energy stored inside the igniter capacitor is completely conducted to the ground in a very short time, completely eliminating the problem of residual charge accumulation in the workpiece. This grounding circuit is existing technology and will not be described in detail here. By using a separate high-speed grounding circuit, the discharge path is shorter and the discharge is more thorough. The discharge does not need to pass through multiple layers of weak current circuits such as the PCB board traces, miniature chip resistors, and pin pads inside the igniter. It will not cause residual charge or incomplete discharge due to high line impedance and long path.

[0029] In this invention, the loading / unloading robot 2 at the upper front of the testing platform 1 starts working, automatically grabbing the pulse igniter body workpiece to be tested and accurately placing it inside the carrier box 6. Multiple positioning seats 12 are fixedly installed at the bottom of the carrier box 6. Through the matching and engaging structure between the positioning seats 12 and the bottom of the pulse igniter body workpiece, the pulse igniter body workpiece is initially and accurately positioned, effectively preventing positional displacement of the pulse igniter body workpiece during subsequent transportation and testing, and ensuring the accuracy of subsequent testing standards.

[0030] After the pulse igniter body workpiece is accurately placed and initially limited, the horizontal screw slide rail 5 at the top of the testing table 1 starts to run. The sliding part of the horizontal screw slide rail 5 drives the carrier box 6 and the pulse igniter body workpiece that is locked inside to move horizontally in sync, and smoothly transports the pulse igniter body workpiece to the inner testing station of the support frame 7 in the middle of the testing table 1, completing the testing and positioning of the pulse igniter body workpiece, and preparing for the subsequent automated testing process.

[0031] After the pulse igniter body is in place, the testing process begins. The hydraulic telescopic rod 8 at the upper end of the support frame 7 starts to extend downwards. The telescopic end of the hydraulic telescopic rod 8 drives the lifting plate 9 to move vertically downwards. As multiple support rods 24 continue to move downwards, the sliding guide mechanism is triggered to operate in conjunction. When the U-shaped mounting plate 11 moves downwards, the gear 20 at its end meshes with the rack 18 fixed between the testing table 1 and the support frame 7. Relying on the fixed trajectory of the rack 18, the gear 20 is driven to rotate, which in turn drives the threaded rod 30 to rotate. The threaded rod 30 drives the threaded adapter movable seat 29 to slide horizontally along the second guide rod 31, thereby driving the movable cross plate 27 to move horizontally in sync. The moving horizontal plate 27, through the sliding engagement of the guide groove 28 and the sliding rod 33, converts the horizontal displacement into the forward and backward displacement of the support rod 24, driving the four front support rods 24 to move backward sequentially from left to right, and the four rear support rods 24 to move forward sequentially from left to right. Simultaneously with the horizontal displacement of the moving horizontal plate 27, the triggering mechanism is triggered, causing the fixing strip 23 fixed on one side of the moving horizontal plate 27 to move synchronously, driving the L-shaped traction rod 21 to move synchronously. The vertical part of the L-shaped traction rod 21 is embedded in the arc-shaped elongated hole 15 of the driven slide plate 14 and slides in coordination, pulling the driven slide plate 14 to slide to the right on the vertical plate 13 against the elastic force of the first spring 16. The inclined surface 17 at the lower right end of the driven slide plate 14, in conjunction with the rubber layer at the bottom of the carrier box 6, presses down and blocks the pulse igniter body workpiece inside the carrier box 6, completing a secondary clamping and limiting, completely fixing the position of the pulse igniter body workpiece, preventing workpiece loosening or displacement during the testing process, and further improving testing stability and accuracy.

[0032] During the process of the front and rear sets of support rods 24 moving in opposite directions, the rolling contact parts 34 mounted on the inner side of the lower end of each support rod 24 are precisely aligned with each set of pins of the pulse igniter body workpiece in sequence. The grounding pin, power supply pin, solenoid valve pin, and thermocouple pin are connected and mated one by one in strict accordance with the preset order, realizing the stable conduction connection between the eight pins of the pulse igniter body workpiece and the analog circuit module. Through the high-precision regulated power supply simulation unit, grounding circuit simulation unit, solenoid valve real load simulation unit, thermocouple signal feedback simulation unit and other functional units of the analog circuit module, the real circuit logic and load conditions of the pulse igniter body workpiece in gas equipment and stoves are completely replicated, and a test environment consistent with the actual use state is constructed.

[0033] After all pins of the pulse igniter body are fully in contact with the rolling contact 34, the analog circuit module is fully configured, and the secondary limit position of the workpiece is stable, the hydraulic telescopic rod 8 continues to extend downwards, driving the U-shaped mounting plate 11 to move vertically downwards until it reaches the lowest limit position. At this time, the two detection contacts 40 installed inside the junction box 38 at the lower end of the U-shaped mounting plate 11 are precisely in contact with the two high-voltage output terminals on the top of the pulse igniter body, completing the docking operation of the high-voltage detection points and constructing a complete spark voltage and spark frequency detection circuit.

[0034] After the test contact 40 is stably connected to the high-voltage output terminal, the equipment officially starts the test program, and the test circuit module starts working to realize the synchronous test of spark voltage and spark frequency.

[0035] After the single spark dual-parameter test is completed, the equipment automatically starts the reset process, and all mechanisms operate in reverse linkage. The hydraulic telescopic rod 8 retracts upward, driving the lifting plate 9 and the U-shaped mounting plate 11 to move vertically upward. The gear 20 rotates in the opposite direction along the rack 18, driving the threaded rod 30 to reverse, driving the moving horizontal plate 27 to reset horizontally in the opposite direction, and then driving the front and rear support rods 24 to move in the opposite direction, so as to gradually separate the rolling contact 34 from the pin of the pulse igniter body. At the same time, the L-shaped traction rod 21 resets with the moving horizontal plate 27, and releases the traction on the driven slide plate 14 with the arc-shaped elongated hole 15. The driven slide plate 14 returns to its original position under the elastic reset action of the first spring 16, releasing the secondary clamping limit on the pulse igniter body.

[0036] It should be noted that during the testing operation, the driven slide plate 14 moves to the right until its right end face is directly above the wedge block 39. Subsequently, as the U-shaped frame 35 moves back, the wedge block 39 also moves back along with the junction box 38. At the same time, the two L-shaped traction rods 21 also move upward and to the left synchronously. However, due to the arc-shaped elongated hole 15 on the driven slide plate 14, in the initial stage of the leftward movement of the L-shaped traction rod 21, it does not contact the left side of the arc-shaped elongated hole 15 and cannot drive the entire driven slide plate 14 to move to the left. Therefore, the upward movement of the wedge block 39 will contact the inclined surface 17 of the driven slide plate 14. 14 has a large contact friction with the pulse igniter body, so it is difficult for it to move under the resistance, forcing the whole consisting of the two junction boxes 38 and the U-shaped frame 35 to move to the right, so that the discharge contact 26 contacts the high-voltage terminal. The high-speed grounding circuit completes the complete discharge of residual high voltage and residual electricity, eliminates the accumulation of residual electricity in the workpiece, and ensures that the workpiece is safe and free of residual high voltage after inspection. Since the discharge contact 26 has a certain elasticity, it will form a certain pressure with the high-voltage terminal. This pressure can eliminate the microscopic unevenness and grooves on the metal contact surface, form more effective conductive points, and further improve the residual electricity release speed.

[0037] After all the testing mechanisms, limit mechanisms, and power connection mechanisms are fully reset, the equipment automatically determines the workpiece testing results. The horizontal screw slide rail 5 drives the carrier box 6 and the tested pulse igniter body workpiece to move horizontally to the initial loading and unloading station or the defective unloading area at the rear. The loading and unloading robot 2 unloads and collects the qualified pulse igniter body workpieces. If the defective pulse igniter body workpieces fail to meet the requirements for both spark voltage and spark frequency, the defective robot 3 at the upper rear of the testing station 1 will accurately grab and sort them to complete the fully automated testing process for a single pulse igniter body workpiece. The above process is repeated to achieve batch workpiece testing. It is worth mentioning that during the reset process, the high-voltage contact is first disconnected and the high voltage is released. Then, the thermocouple pins, solenoid valve pins, power supply pins, and grounding pins corresponding to the pulse igniter body workpiece are disconnected in an orderly manner. The circuit disconnection of the eight functional pins is completed step by step. The electrical safety logic of disconnecting the high-voltage detection terminal first and then the low-voltage functional pins is strictly followed, which can effectively avoid high voltage residue from breaking down the low-voltage pin circuit, burning the workpiece and the analog circuit module.

[0038] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A testing device for testing spark voltage, characterized in that, include: The test platform (1) is equipped with a display control panel (4) at the top. The display control panel (4) integrates an analog circuit module and a test circuit module. The test platform (1) is equipped with a horizontal screw slide rail (5) at the top. The sliding part of the horizontal screw slide rail (5) is equipped with a carrier box (6). The inner side of the carrier box (6) is equipped with a pulse igniter body. The bottom of the carrier box (6) is fixedly connected with multiple positioning seats (12). The pulse igniter body is provided with two high-voltage output terminals and two sets of pins arranged in front and behind. Each set of pins consists of a ground pin, a power pin, a solenoid valve pin, and a thermocouple pin from left to right. The test mechanism includes a support frame (7) installed in the middle of the test platform (1). The support frame (7) is equipped with a U-shaped mounting plate (11) through a lifting mechanism. There are two sets of movable support members below the U-shaped mounting plate (11). Each set of support members consists of four support rods (24). The inner side of the lower end of each support rod (24) is equipped with a rolling contact (34). The two sets of movable support members are connected to the analog circuit module in sequence by a sliding guide mechanism. When the lifting mechanism moves down, the four support rods (24) on the front side move backward from left to right in sequence, and the four support rods (24) on the rear side move forward from left to right in sequence. This enables the grounding pin, power supply pin, solenoid valve pin and thermocouple pin to be connected to the analog circuit module in sequence. There are two contact boxes (38) at the lower end of the U-shaped mounting plate (11). The top of each contact box (38) is equipped with a detection contact (40). When the lifting mechanism moves down to the lowest position, the two detection contacts (40) contact the two high-voltage output terminals.

2. A test apparatus for testing a spark voltage according to claim 1, characterized in that, Multiple of the rolling contactors (34) are electrically connected to the analog circuit module, and the two detection contacts (40) are electrically connected to the two detection circuit modules.

3. A test apparatus for testing a spark voltage according to claim 1, characterized in that, The upper front end of the inspection station (1) is equipped with a loading and unloading robot (2), and the upper rear end of the inspection station (1) is equipped with a defective robot (3).

4. The test apparatus for testing the spark voltage according to claim 1, wherein The lifting mechanism includes a hydraulic telescopic rod (8) installed on the upper end of the support frame (7). The telescopic end of the hydraulic telescopic rod (8) is fixedly connected to a lifting plate (9). The upper end of the lifting plate (9) is symmetrically fixedly connected to two first guide rods (10). The upper ends of the two first guide rods (10) pass through the horizontal part of the support frame (7) and are slidably connected. The lower end of the lifting plate (9) is fixedly connected to the upper end of the U-shaped mounting plate (11).

5. The test apparatus for testing the spark voltage according to claim 1, wherein The sliding guide mechanism includes a movable horizontal plate (27) slidably connected to the upper end of the U-shaped mounting plate (11). The upper end of the movable horizontal plate (27) is provided with a guide groove (28), which is composed of a horizontal part and an inclined part. Each of the support rods (24) is fixedly connected to a T-shaped rod (32) at its upper end, and each T-shaped rod (32) is fixedly connected to a sliding rod (33) at its upper end. Each sliding rod (33) is slidably connected to the corresponding guide groove (28). The U-shaped mounting plate (11) has multiple slots (25) on it, and each T-shaped rod (32) can slide back and forth inside the slot (25).

6. A test apparatus for testing spark voltage according to claim 5, wherein Two second guide rods (31) are fixedly connected between the inner walls of the two sides of the U-shaped mounting plate (11). A movable seat (29) is provided through the two second guide rods (31). The lower end of the movable seat (29) is fixedly connected to the upper end of the movable cross plate (27). A threaded rod (30) is rotatably connected between the inner walls of the two sides of the U-shaped mounting plate (11). The threaded rod (30) passes through the movable seat (29) and is threadedly connected to the movable seat (29).

7. A test apparatus for testing spark voltage according to claim 6, characterized in that The left end of the threaded rod (30) extends to the outside and is equipped with a gearbox (19). The input shaft of the gearbox (19) is fixedly connected to a gear (20). A rack (18) is fixedly connected between the test bench (1) and the support frame (7). The rack (18) and the gear (20) cooperate.

8. A test apparatus for testing spark voltage according to claim 5, wherein It also includes a limiting mechanism, which includes a vertical plate (13) fixedly connected to the upper end of the carrier box (6). A driven slide plate (14) that can slide left and right is provided through the vertical plate (13). An inclined surface (17) is provided at the lower right end of the driven slide plate (14). The driven slide plate (14) and the vertical plate (13) are elastically connected by a first spring (16). A rubber layer is provided on the inner bottom surface of the carrier box (6).

9. A test apparatus for testing spark voltage according to claim 8, characterized in that, It also includes a triggering mechanism, which includes two arc-shaped holes (15) symmetrically opened on the driven slide plate (14), a fixing strip (23) is fixedly connected to one side of the moving cross plate (27), and an L-shaped traction rod (21) is fixedly connected to the other side of the fixing strip (23). The vertical part of the L-shaped traction rod (21) cooperates with the two arc-shaped holes (15).

10. A test apparatus for testing spark voltage according to claim 9, wherein The lower end of the U-shaped mounting plate (11) is fixedly connected to a connecting seat (22). The lower ends of the connecting seat (22) are fixedly connected to two second springs (36). The other ends of the two second springs (36) are fixedly connected to a U-shaped frame (35). A T-shaped guide strip (37) is fixedly connected between the two U-shaped frames (35). The T-shaped guide strip (37) passes through the connecting seat (22) and is slidably connected. The lower end of the U-shaped frame (35) is fixedly connected to two junction boxes (38). The left side of the junction box (38) on the left side is fixedly connected to a wedge block (39) with an upward inclined surface. The wedge block (39) cooperates with the inclined surface (17). The left side walls of the two junction boxes (38) are each equipped with an elastic discharge contact (26). The two discharge contacts (26) are electrically connected to the ground through two grounding circuits.

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