Hi-pot automatic testing machine with single-time testing and cyclic multi-time testing

Abstract

The utility model discloses a Hi-pot automatic testing machine with single-time and cyclic multi-time testing functions, which comprises a rack, a testing chamber, an industrial computer, a Hi-pot high-voltage tester, a first horizontal conveying device, a second horizontal conveying device, a third horizontal conveying device, a fourth horizontal conveying device and an electric control box, the first horizontal conveying device is arranged at the bottom in the test chamber, and the second horizontal conveying device is arranged below the first horizontal conveying device. The third horizontal conveying device and the fourth horizontal conveying device are arranged on the left side and the right side of the first horizontal conveying device and the left side and the right side of the second horizontal conveying device respectively, and each of the third horizontal conveying device and the fourth horizontal conveying device is connected with an up-down lifting mechanism. The third horizontal conveying device, the fourth horizontal conveying device, the first horizontal conveying device and the second horizontal conveying device are located on the same conveying horizontal plane, and the tested products are tested one time or circularly conveyed to a testing room to be tested circularly and repeatedly.

Description

Technical Field

[0001] This disclosure relates to the field of testing equipment technology, and in particular to a Hi-pot automatic testing machine that combines single-test and multi-cycle testing. Background Technology

[0002] Hi-pot testing, also known as withstand voltage testing, compares the leakage current generated by the product under test under a high-voltage test output with a set judgment current. If the detected leakage current value is less than the preset value, the product passes the test. When the detected leakage current exceeds the judgment current, the test voltage is instantly cut off and an audible and visual alarm is triggered, thus determining the withstand voltage strength of the component under test. In most cases, Hi-pot testing only needs to be performed once, as its purpose is to assess the insulation performance of the product under normal operating conditions. However, for some high-difficulty or complex products, such as complex PCBs, multiple tests can more comprehensively detect potential insulation defects, ensuring the reliability and stability of the product. In practice, if the first test fails or a potential problem is found, multiple tests may be necessary to confirm whether the problem has been resolved or to further troubleshoot the fault. Existing Hi-pot testing machines typically use a single-layer linear conveyor belt. When a product needs to be tested a second time, it must be manually placed back onto the conveyor belt input to re-enter the testing chamber for secondary testing. This operation requires the power to be turned off for safe operation, making it cumbersome and inefficient. Therefore, existing Hi-pot testing equipment needs to be optimized and improved to solve the above-mentioned technical problems. Utility Model Content

[0003] In view of this, this disclosure proposes a Hi-pot automated test machine that combines single-cycle and multi-cycle testing. This test machine mainly enables automated multi-cycle testing.

[0004] The technical solution of this utility model is a Hi-pot automatic testing machine that combines single-test and multi-cycle testing, comprising:

[0005] The frame is a hollow rectangular frame;

[0006] The test chamber is located in the middle of the upper end of the frame. The front, back and top of the test chamber are enclosed side walls, and the left and right sides are movable and openable passage doors.

[0007] An industrial computer and a Hi-pot high-voltage tester are installed on the top of the test chamber, with the industrial computer connected to the Hi-pot high-voltage tester.

[0008] A first horizontal conveying device and a second horizontal conveying device are provided. The first horizontal conveying device is located at the bottom of the test chamber and is fixed to the frame. The second horizontal conveying device is vertically located below the first horizontal conveying device and is fixed to the frame.

[0009] An electrical control box is located at the bottom of the first horizontal conveyor device. The bottom of the electrical control box and the second horizontal conveyor device are reserved to allow the product to be tested to pass through. The electrical control box is electrically connected to an industrial computer and a Hi-pot high-voltage tester.

[0010] The third and fourth horizontal conveying devices are respectively located on the left and right sides of the first and second horizontal conveying devices. Each of the third and fourth horizontal conveying devices is connected to a lifting mechanism. Through the lifting mechanism, the third and fourth horizontal conveying devices are on the same horizontal plane as the first and second horizontal conveying devices, so as to realize the cyclical conveying of the product to be tested to the test chamber for multiple tests.

[0011] Furthermore, the first, second, third, and fourth horizontal conveying devices are all belt conveyors. Each belt conveyor includes a supporting base plate, supporting side plates on both sides of the supporting base plate along its length, and a first and second rotating shaft parallel to each other at both ends of the supporting side plates. The ends of the first and second rotating shafts pass through through holes in the supporting side plates. Bearings are provided at the through holes to connect the ends of the first and second rotating shafts. A conveyor wheel is fitted on the inner side near the ends of the first and second rotating shafts. A conveyor belt is provided on the conveyor wheel on the same side. A drive motor is provided on the supporting base plate. The output shaft of the drive motor is connected to a first synchronous pulley. A second synchronous pulley is provided on the first or second rotating shaft. A synchronous belt is connected to the first and second synchronous pulleys. The drive motor drives the synchronous belt to rotate, thereby driving the conveyor belt to rotate.

[0012] As a preferred embodiment of the lifting mechanism, the lifting mechanism includes a load-bearing sidewall, a first linear guide rail distributed on both sides and parallel to each other on the inner side of the load-bearing sidewall, a first slider on the first linear guide rail, a support bracket connected to the first slider, and a first straight-stroke cylinder located between the inner side of the load-bearing sidewall and the first linear guide rail. The support bracket is connected to the support base plate of the third horizontal conveying device and the fourth horizontal conveying device. The first straight-stroke cylinder is connected to the support bracket, and the first straight-stroke cylinder drives the support bracket to move the third horizontal conveying device and the fourth horizontal conveying device up and down.

[0013] Preferably, the first linear stroke cylinder is a magnetic couple rodless cylinder, and the magnetic couple rodless cylinder is equipped with an air regulating valve for adjusting the driving lifting speed.

[0014] Furthermore, the inner side of the load-bearing sidewall is provided with limit buffers near its upper and lower ends, and the limit buffers are hydraulic buffers. The rear side of the third horizontal conveying device and the fourth horizontal conveying device is provided with a stop block for abutting against the limit buffer when lifting up and down.

[0015] Furthermore, a blocking cylinder is provided on the support base plate corresponding to the front end position of the first horizontal conveying device, the second horizontal conveying device, the third horizontal conveying device and the fourth horizontal conveying device, for controlling the continuous passage or stopping passage of the product to be tested; the support base plate is also provided with a photoelectric sensor for detecting whether there is a product to be tested.

[0016] Furthermore, the upper end of the frame corresponds to the left and right sides of the test chamber as the product placement entrance and product removal entrance, and safety light curtains are provided on the left and right sides of the product placement entrance and product removal entrance, as well as on both sides of the passage door of the test chamber.

[0017] Furthermore, an emergency stop button, a two-hand simultaneous start button, and a power indicator light are provided at the front end of both the product inlet and the product outlet.

[0018] Furthermore, the industrial computer and the Hi-pot high-voltage tester are housed in a protective enclosure, which is fixed to the top of the test chamber. The top of the protective enclosure is equipped with a three-color warning light, which is connected to the industrial computer. The industrial computer is connected to a display screen, a keyboard, and a mouse. The display screen is fixed to the front wall of the test chamber. The electrical control box has a cabinet door with a recessed cavity. The recessed cavity has a hinged flip-top, which houses the keyboard and mouse.

[0019] Furthermore, the passage door includes an outer door panel, an inner door panel, and a drive assembly for moving the inner door panel up and down. The lower part of the outer door panel is provided with an entrance / exit passage. The inner side of the outer door panel is provided with first side panels on both sides corresponding to the entrance / exit passage. The inner side of each of the first side panels is provided with a second linear guide rail. A second slider is provided on the second linear guide rail. The inner door panel is provided with second side panels on both sides. The outer side of the second side panels is connected to the second slider. A second linear stroke cylinder is provided on one side of the inner door panel. The second linear stroke cylinder is used to drive the inner door panel to move up and down, thereby opening or closing the entrance / exit passage.

[0020] The beneficial effect of this utility model is that the mechanism for conveying the product under test within the Hi-pot automatic testing machine frame adopts a three-section conveying device design. The first and second horizontal conveying devices are fixedly installed at the upper and lower center positions of the frame, respectively. Symmetrical cavities are formed on the left and right sides of the first and second horizontal conveying devices, respectively, where a third and fourth horizontal conveying device are respectively installed. Both the third and fourth horizontal conveying devices are equipped with lifting mechanisms to drive their vertical movement. When the third horizontal conveying device rises to the same horizontal conveying surface as the first horizontal conveying device, the product under test is placed into the third horizontal conveying device and then conveyed to the first horizontal conveying device. The first horizontal conveying device then conveys the product to the testing chamber, where the testing device performs a high-voltage test on the product. This is the first test. The fourth horizontal conveying device then rises, and the product that has completed the first test is conveyed to the fourth horizontal conveying device via the first horizontal conveying device. Removing the product at this point completes one test. If secondary or multiple tests are required, the product under test is not removed. The fourth horizontal conveyor descends to the same horizontal plane as the second horizontal conveyor, then transfers the product under test to the second horizontal conveyor. Simultaneously, the third horizontal conveyor also descends to the same horizontal plane as the second horizontal conveyor, which then transfers the product under test to the third horizontal conveyor. The third horizontal conveyor then rises to the same horizontal plane as the first horizontal conveyor, thus cyclically transferring the product under test back to the testing chamber for a second test. If multiple tests are required, the above transfer process is repeated. Therefore, this Hi-pot automatic testing machine combines single-test and cyclic multiple-test capabilities. In cases requiring cyclic multiple tests, there is no need to stop the machine midway or remove and reposition the product, thereby improving testing efficiency and reducing manual labor. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of the overall structure of an embodiment of the present utility model.

[0022] Figure 2 This is a schematic diagram of the test chamber and rack in the open state according to an embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram of the first horizontal conveying device, the second horizontal conveying device, the third horizontal conveying device, the fourth horizontal conveying device, and the vertical lifting mechanism and frame assembly structure according to an embodiment of the present utility model.

[0024] Figure 4 This is a schematic diagram of the structure of the first horizontal conveying device according to an embodiment of the present utility model.

[0025] Figure 5 This is a top-view perspective three-dimensional schematic diagram of the assembly structure of the third horizontal conveying device and the vertical lifting mechanism in an embodiment of this utility model.

[0026] Figure 6 This is a bottom perspective three-dimensional schematic diagram of the assembly structure of the third horizontal conveying device and the vertical lifting mechanism in an embodiment of this utility model.

[0027] Figure 7 This is a schematic diagram of the passage door in a closed state according to an embodiment of the present invention.

[0028] Figure 8 This is a schematic diagram of the passage door in an open state according to an embodiment of the present invention.

[0029] Explanation of reference numerals in the attached figures

[0030] 1. Frame; 2. Test Chamber; 3. Industrial Computer; 4. Hi-pot High Voltage Tester; 5. First Horizontal Conveyor; 6. Second Horizontal Conveyor; 7. Third Horizontal Conveyor; 8. Fourth Horizontal Conveyor; 9. Lifting Mechanism; 10. Electrical Control Box; 11. Blocking Cylinder; 12. Photoelectric Sensor; 13. Safety Light Curtain; 14. Emergency Stop Button; 15. Two-Handed Synchronous Start Button; 16. Power Indicator Light; 17. Three-Color Warning Light; 18. Display Screen; 19. Flip-Top Plate; 501. Support Base Plate; 502. Support Side Plate; 5031. First Rotating Shaft; 5032. Second... 504. Shaft; 505. Transmission wheel; 506. Transmission belt; 507. Drive motor; 508. First synchronous pulley; 509. Second synchronous pulley; 501. Synchronous belt; 902. Load-bearing side wall; 903. First linear guide rail; 904. First slider; 905. Support bracket; 906. First linear stroke cylinder; 9051. Air regulating valve; 906. Limit buffer; 201. Outer door panel; 2011. Inlet / outlet passage; 2012. First side panel; 202. Inner door panel; 2021. Second side panel; 203. Second linear guide rail; 204. Second slider; 205. Second linear stroke cylinder. Detailed Implementation

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

[0032] Please refer to Figures 1 to 8This embodiment discloses a specific implementation of a Hi-pot automatic testing machine that combines single and multiple cyclic testing. It includes a frame 1, a testing chamber 2, an industrial computer 3, a Hi-pot high-voltage tester 4, a first horizontal conveyor 5, a second horizontal conveyor 6, a third horizontal conveyor 7, a fourth horizontal conveyor 8, and an electrical control box 10. The frame 1 is a hollow rectangular frame. The testing chamber 2 is located at the middle of the upper part of the frame 1. The front, back, and top of the testing chamber 2 are enclosed side walls, and the left and right sides are movable and openable passageways. The industrial computer 3 and the Hi-pot high-voltage tester 4 are installed on the top of the testing chamber 2 and connected to each other. The first horizontal conveyor 5 is located at the bottom of the testing chamber 2 and fixed to the frame 1. The second horizontal conveyor 6 is vertically located below the first horizontal conveyor 5 and fixed to the frame 1. The electrical control box 10 is located at the bottom of the first horizontal conveyor 5, and its bottom is connected to the... The second horizontal conveyor device 6 has a reserved height for the product to be tested to pass through. The electrical control box 10 is electrically connected to the industrial computer 3 and the Hi-pot high voltage tester 4. The third horizontal conveyor device 7 and the fourth horizontal conveyor device 8 are respectively set on the left and right sides of the first horizontal conveyor device 5 and the second horizontal conveyor device 6. The third horizontal conveyor device 7 and the fourth horizontal conveyor device 8 are each connected to a lifting mechanism 9. Through the lifting mechanism 9, the third horizontal conveyor device 7 and the fourth horizontal conveyor device 8 are on the same conveying horizontal plane as the first horizontal conveyor device 5 and the second horizontal conveyor device 6, so as to realize the cyclical conveying of the product to be tested to the test chamber 2 for multiple cyclic tests.

[0033] Please refer to Figures 1 to 4As a preferred embodiment, in this case, the first horizontal conveying device 5, the second horizontal conveying device 6, the third horizontal conveying device 7, and the fourth horizontal conveying device 8 are all belt conveyors. Each belt conveyor includes a supporting base plate 501, supporting side plates 502 located on both sides of the supporting base plate 501 along its length, and a first rotating shaft 5031 and a second rotating shaft 5032 located parallel to each other at both ends of the supporting side plates 502. The ends of the first rotating shaft 5031 and the second rotating shaft 5032 pass through through holes provided in the supporting side plates 502, and bearings are provided at the through holes to connect the first rotating shaft 5031 and the second rotating shaft 5032. At the end of 032, a transmission wheel 504 is fitted inside the first rotating shaft 5031 and the second rotating shaft 5032. A transmission belt 505 is mounted on the transmission wheel 504 on the same side. A drive motor 506 is mounted on the support base plate 501. The output shaft of the drive motor 506 is connected to a first synchronous pulley 507. A second synchronous pulley 508 is mounted on either the first rotating shaft 5031 or the second rotating shaft 5032. A synchronous belt 509 is connected to the first synchronous pulley 507 and the second synchronous pulley 508. The drive motor 506 drives the synchronous belt 509 to rotate, thereby driving the transmission belt 505 to rotate. When performing high-voltage testing on the product under test, a tray is placed on it, and the tray has a fixing position for fixing the product under test. If the third horizontal conveyor 7 is the input conveyor for the product under test, the tray and the product under test placed on the tray are placed on the third horizontal conveyor 7. The product under test is then conveyed to the first horizontal conveyor 5 via the third horizontal conveyor 7. The first horizontal conveyor 5 conveys the product under test to the test chamber 2, where the testing device performs a high-voltage test on the product under test. This is the first test. The fourth horizontal conveyor 8 is then raised, and the product under test that has completed the first test is conveyed to the fourth horizontal conveyor 8 via the first horizontal conveyor 5. At this point, the product under test is removed, completing a single test. If a second or multiple tests are required, the product under test is not removed. The fourth horizontal conveyor 8 descends to the same horizontal conveyor surface as the second horizontal conveyor 6, and the product under test is then conveyed to the second horizontal conveyor 6. Simultaneously, the third horizontal conveyor 7 also descends to the same horizontal conveyor surface as the second horizontal conveyor 6, and the product under test is conveyed to the third horizontal conveyor 7 via the second horizontal conveyor 6. Then, the third horizontal conveyor 7 rises to the same horizontal conveyor surface as the first horizontal conveyor 5, thus cyclically conveying the product under test back to the test chamber 2 for the second test. If multiple tests are required, repeat the above transmission process.

[0034] Please refer to Figure 3 , Figure 5 and Figure 6As a preferred embodiment of the lifting mechanism 9, the lifting mechanism 9 includes a load-bearing sidewall 901, a first linear guide rail 902 distributed on both sides and parallel to each other on the inner side of the load-bearing sidewall 901, a first slider 903 on the first linear guide rail 902, a support bracket 904 connected to the first slider 903, and a first linear stroke cylinder 905 located between the inner side of the load-bearing sidewall 901 and the first linear guide rail 902. The support bracket 904 is connected to the support base plate 501 of the third horizontal conveying device 7 and the fourth horizontal conveying device 8. The first linear stroke cylinder 905 is connected to the support bracket 904. The first linear stroke cylinder drives the support bracket 904 to move the third horizontal conveying device 7 and the fourth horizontal conveying device 8 up and down.

[0035] In a preferred embodiment, the first linear stroke cylinder 905 is a magnetic coupler rodless cylinder, which is equipped with an air regulating valve 9051 for adjusting the driving lifting speed. The magnetic coupler rodless cylinder has the advantages of stable operation and space saving.

[0036] In a preferred embodiment, the inner side of the load-bearing sidewall 901 is provided with limiting buffers 906 near its upper and lower ends, respectively. The limiting buffers 906 are hydraulic buffers. The rear sides of the third horizontal conveying device 7 and the fourth horizontal conveying device 8 are provided with abutting blocks that abut against the limiting buffers 906 during vertical movement. By setting the limiting buffers 906, the abutting blocks can abut against the limiting buffers 906 before the third horizontal conveying device 7 and the fourth horizontal conveying device 8 rise or fall to the preset position, thereby enabling a smoother and more stable arrival at the preset position.

[0037] Please refer to Figure 3 , Figure 4 In a preferred embodiment, a blocking cylinder 11 is provided on the supporting base plate 501 corresponding to the forward-moving front positions of the first horizontal conveying device 5, the second horizontal conveying device 6, the third horizontal conveying device 7, and the fourth horizontal conveying device 8. This cylinder controls the continuous or stopped passage of the product to be tested. Specifically, when the tray containing the product to be tested reaches a certain position in the aforementioned horizontal conveying devices, the blocking rod of the blocking cylinder 11 extends upward, thereby preventing the tray from continuing to move forward. The supporting base plate 501 is also provided with a photoelectric sensor 12 for detecting whether there is a product to be tested.

[0038] Please refer to Figure 1In a preferred embodiment, the upper end of the frame 1 corresponds to the left and right sides of the test chamber 2 as the product insertion and removal ports. Safety light curtains 13 are installed on both sides of the product insertion and removal ports, as well as on both sides of the passageway door of the test chamber 2. The safety light curtains 13 prevent personnel from inserting their hands into the product insertion or removal ports during testing, thus avoiding the risk of electric shock.

[0039] Please refer to Figure 1 An emergency stop button 14, a two-hand simultaneous start button 15, and a power indicator light 16 are provided at the front end of both the product inlet and the product outlet.

[0040] Furthermore, the industrial computer 3 and the Hi-pot high-voltage tester 4 are housed in a protective enclosure, which is fixed to the top of the test chamber 2. The top of the protective enclosure is equipped with a tri-color warning light 17, which is connected to the industrial computer 3. The industrial computer 3 is connected to a display screen 18, a keyboard, and a mouse. The display screen 18 is fixed to the front wall of the test chamber 2. The electrical control box 10 has a cabinet door with a recessed cavity. The recessed cavity has a hinged flip-top 19, which is used to house the keyboard and mouse.

[0041] Please refer to Figure 1 , Figure 7 and Figure 8 As one of the solutions for a movable and openable passage door, the passage door includes an outer door panel 201, an inner door panel 202, and a drive assembly for driving the inner door panel 202 to move up and down. The lower part of the outer door panel 201 is provided with an entrance / exit passage 2011. The inner side of the outer door panel 201 is provided with a first side panel 2012 on both sides corresponding to the entrance / exit passage 2011. The inner side of the first side panel 2012 is provided with a second linear guide rail 203 on each side. The second linear guide rail 203 is provided with a second slider 204. The inner door panel 202 is provided with a second side panel 2021 on both sides. The outer side of the second side panel 2021 is connected to the second slider 204. One side of the inner door panel 202 is provided with a second linear stroke cylinder 205. The second linear stroke cylinder 205 is used to drive the inner door panel 202 to move up and down, thereby opening or closing the entrance / exit passage 2011.

[0042] The Hi-pot automated testing machine disclosed in this solution combines single-cycle testing and multiple-cycle testing. When multiple cycles of testing are required, there is no need to stop the machine midway or remove and reposition the product, thus improving testing efficiency and reducing manual labor. The robotic arm device installed in the testing chamber for contacting the product under test, and the conventional structural components of the Hi-pot testing machine's testing chamber, such as the pressure-pressing and conductive elements or contact probes at the front end of the robotic arm device, will not be described in detail here.

[0043] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A Hi-pot automatic testing machine that combines single-test and multi-cycle testing, characterized in that, include: The frame is a hollow rectangular frame; The test chamber is located in the middle of the upper end of the frame. The front, back and top of the test chamber are enclosed side walls, and the left and right sides are movable and openable passage doors. An industrial computer and a Hi-pot high-voltage tester are installed on the top of the test chamber, with the industrial computer connected to the Hi-pot high-voltage tester. A first horizontal conveying device and a second horizontal conveying device are provided. The first horizontal conveying device is located at the bottom of the test chamber and is fixed to the frame. The second horizontal conveying device is vertically located below the first horizontal conveying device and is fixed to the frame. An electrical control box is located at the bottom of the first horizontal conveyor device. The bottom of the electrical control box and the second horizontal conveyor device are reserved to allow the product to be tested to pass through. The electrical control box is electrically connected to an industrial computer and a Hi-pot high-voltage tester. The third and fourth horizontal conveying devices are respectively located on the left and right sides of the first and second horizontal conveying devices. Each of the third and fourth horizontal conveying devices is connected to a lifting mechanism. Through the lifting mechanism, the third and fourth horizontal conveying devices are on the same horizontal plane as the first and second horizontal conveying devices, so as to realize the cyclical conveying of the product to be tested to the test chamber for multiple tests.

2. The Hi-pot automatic testing machine with both single and multiple cycle testing capabilities as described in claim 1, characterized in that, The first, second, third, and fourth horizontal conveying devices are all belt conveyors. Each belt conveyor includes a supporting base plate, supporting side plates on both sides of the supporting base plate along its length, and a first and second rotating shaft parallel to each other at both ends of the supporting side plates. The ends of the first and second rotating shafts pass through through holes in the supporting side plates. Bearings are provided at the through holes to connect the ends of the first and second rotating shafts. A conveyor wheel is fitted on the inner side near the ends of the first and second rotating shafts. A conveyor belt is mounted on the conveyor wheel on the same side. A drive motor is provided on the supporting base plate. The output shaft of the drive motor is connected to a first synchronous pulley. A second synchronous pulley is provided on either the first or second rotating shaft. A synchronous belt is connected to the first and second synchronous pulleys. The drive motor drives the synchronous belt to rotate, thereby driving the conveyor belt to rotate.

3. The Hi-pot automatic testing machine with both single and multiple cycle testing capabilities as described in claim 2, characterized in that, The lifting mechanism includes a load-bearing sidewall, a first linear guide rail distributed on both sides and parallel to each other on the inner side of the load-bearing sidewall, a first slider on the first linear guide rail, a support bracket connected to the first slider, and a first straight-stroke cylinder located between the inner side of the load-bearing sidewall and the first linear guide rail. The support bracket is connected to the support base plate of the third horizontal conveying device and the fourth horizontal conveying device. The first straight-stroke cylinder is connected to the support bracket, and the first straight-stroke cylinder drives the support bracket to move the third horizontal conveying device and the fourth horizontal conveying device up and down.

4. The Hi-pot automatic testing machine with both single and multiple cycle tests as described in claim 3, characterized in that, The first linear cylinder is a magnetic couple rodless cylinder, which is equipped with an air regulating valve to adjust the driving lifting speed.

5. The Hi-pot automatic testing machine with both single and multiple cycle tests as described in claim 3, characterized in that, Limiting buffers are respectively provided on the inner side of the load-bearing sidewall near its upper and lower ends. The limiting buffers are hydraulic buffers. The rear side of the third horizontal conveying device and the fourth horizontal conveying device is provided with a stop block for abutting against the limiting buffer when lifting up and down.

6. The Hi-pot automatic testing machine with both single and multiple cycle tests according to claim 2, characterized in that, A blocking cylinder is provided on the support base plate corresponding to the front end position of the first horizontal conveying device, the second horizontal conveying device, the third horizontal conveying device and the fourth horizontal conveying device, for controlling the continuous passage or stopping passage of the product to be tested; the support base plate is also provided with a photoelectric sensor for detecting whether there is a product to be tested.

7. The Hi-pot automatic testing machine with both single and multiple cycle testing capabilities as described in claim 2, characterized in that, The upper part of the frame corresponds to the left and right sides of the test chamber as the product placement entrance and product removal entrance. Safety light curtains are provided on the left and right sides of the product placement entrance and product removal entrance, as well as on both sides of the passage door of the test chamber.

8. The Hi-pot automatic testing machine with both single and multiple cycle tests as described in claim 7, characterized in that, An emergency stop button, a two-hand simultaneous start button, and a power indicator light are provided at the front end of both the product inlet and outlet.

9. The Hi-pot automatic testing machine with both single and multiple cycle testing capabilities according to claim 1, characterized in that, The industrial computer and Hi-pot high-voltage tester are housed in a protective enclosure, which is fixed to the top of the test chamber. The top of the protective enclosure is equipped with a three-color warning light, which is connected to the industrial computer. The industrial computer is connected to a display screen, keyboard, and mouse. The display screen is fixed to the front wall of the test chamber. The electrical control box has a cabinet door with a recessed cavity. The recessed cavity has a hinged flip-top, which houses the keyboard and mouse.

10. The Hi-pot automatic testing machine with both single and multiple cycle testing capabilities according to claim 1, characterized in that, The passage door includes an outer door panel, an inner door panel, and a drive assembly for moving the inner door panel up and down. The lower part of the outer door panel has an entrance / exit passage. The inner side of the outer door panel has a first side panel on each side corresponding to the entrance / exit passage. The inner side of each of the first side panels has a second linear guide rail, and a second slider is provided on the second linear guide rail. The inner door panel has a second side panel on each side. The outer side of the second side panel is connected to the second slider. A second linear stroke cylinder is provided on one side of the inner door panel. The second linear stroke cylinder is used to drive the inner door panel to move up and down, thereby opening or closing the entrance / exit passage.

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