A continuous withstand voltage testing device

Abstract

This utility model relates to the technical field of electric blanket testing, and discloses a continuous withstand voltage testing device, including an input conveyor, a testing machine, and an output conveyor. The input conveyor has an input conveyor belt, and a support frame is provided above the testing machine. A withstand voltage tester is mounted on the upper part of the support frame, and the withstand voltage tester has a grounding terminal for detecting leakage current. Its high-voltage output terminal is electrically connected to the electric blanket being tested. An upper electrical coupling is provided at the lower part of the support frame, and a lower electrical coupling is mounted on the testing machine. The upper and lower electrical couplings each have a grounding terminal for conducting electricity, and there is a gap between them. The output conveyor has an output conveyor belt. This utility model aims to solve the technical problem that existing electric blanket withstand voltage testing equipment cannot meet the needs of modern industrial production for efficient and continuous testing.

Description

Technical Field

[0001] This utility model relates to the technical field of electric blanket testing, specifically to a continuous pressure resistance testing device. Background Technology

[0002] Electric blankets, as a common household appliance for winter heating, have seen their popularity increase year by year in cold northern regions and southern areas without centralized heating, becoming one of the essential heating devices for families. However, because electric blankets operate under power for extended periods and are often in direct contact with the human body, their safety is directly related to the life and property safety of users. Voltage withstand testing, as a core quality control step before electric blankets leave the factory, plays a crucial role in ensuring product safety. This test aims to rigorously examine the electrical insulation performance of electric blankets by simulating a high-voltage environment. If substandard insulation performance is found, unqualified products can be promptly intercepted from entering the market, preventing leakage accidents at the source and building a solid safety barrier for users.

[0003] Traditional electric blanket pressure resistance testing equipment focuses on vertical pressure testing. The lower part integrates a pressure testing machine as the high-pressure output source, and the table has a double-layer metal structure: the bottom layer is a fixed metal liner to support the electric blanket under test, and the upper layer is a fan-shaped movable cover plate, hinged to the side of the table via rotating bearings, forming an openable mechanical structure. In the actual testing process, the operator must first manually lift the fan-shaped cover plate, lay the electric blanket flat on the metal liner plate, and connect the power plug of the electric blanket to the output socket of the pressure testing machine. Then, the fan-shaped cover plate is closed to apply surface pressure to the electric blanket, ensuring a tight fit between the product and the metal layer during testing. After the test is completed, the above steps of opening the cover, removing the blanket, and placing it back in are repeated before the next product can be tested.

[0004] This testing mode relies entirely on manual operation. Each test requires repeating a series of independent steps, including opening the lid, spreading the electric blanket, plugging it in, closing the lid, starting the test, and removing the product. Since each machine can only complete a single test of a single product at a time, the testing process requires manual intervention to start and stop each item individually. This makes continuous delivery and testing of electric blankets impossible, resulting in a severe disconnect between testing efficiency and production efficiency. This discrete, single-station operation makes it difficult to form a coherent workflow, preventing companies from overcoming the efficiency bottleneck of single-test testing and failing to meet the demands of modern industrial production for efficient and continuous testing. Utility Model Content

[0005] The present invention aims to provide a continuous pressure resistance testing device to solve the technical problem that existing electric blanket pressure resistance testing devices cannot meet the needs of modern industrial production for efficient and continuous testing.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] 1) A continuous withstand voltage testing device, characterized in that it comprises an input conveyor, a testing machine, and an output conveyor arranged sequentially along the transport direction; the input conveyor has an input conveyor belt that transports the tested electric blanket toward the testing machine; a support frame is provided above the testing machine; a withstand voltage tester and a conductive connection assembly are provided on the upper surface of the support frame; the high-voltage output terminal of the withstand voltage tester is electrically connected to the tested electric blanket through the conductive connection assembly; the withstand voltage tester is provided with a grounding terminal for detecting leakage current; several upper electrical rollers are provided at the lower part of the support frame; several rotatable lower electrical rollers are installed on the upper surface of the testing machine; the upper and lower electrical rollers are respectively provided with grounding terminals for conducting electricity; the positions of the upper and lower electrical rollers correspond one-to-one; and there is a gap between the upper and lower electrical rollers for the tested electric blanket to pass through; the output conveyor has an output conveyor belt that outputs the tested electric blanket outward along the transport direction.

[0008] In this invention, the input motion machine transports the electric blanket to be tested via an input conveyor belt, ensuring that the electric blanket enters the testing area along a preset path. After testing, the output motion machine's output conveyor belt transports the electric blanket to be tested outward along the transport direction. The support frame above the testing machine carries the withstand voltage tester and the conductive connection assembly. The high-voltage output terminal of the withstand voltage tester is electrically connected to the electric blanket to be tested through the conductive connection assembly. The withstand voltage tester is equipped with a grounding terminal for detecting leakage current. The upper electrical rollers at the bottom of the support frame correspond one-to-one with the lower electrical rollers on the upper surface of the testing machine. A gap is formed between the upper and lower electrical rollers for the electric blanket to pass through. The upper and lower electrical rollers each have a grounding terminal for conducting electricity.

[0009] The grounding terminals of the withstand voltage tester, the upper electrical coupling, and the lower electrical coupling all belong to the same leakage circuit. The withstand voltage tester supplies power to the electric blanket under test through a conductive connection component. The electric blanket under test enters the gap between the upper and lower electrical couplings along the transport direction. If the insulation performance of the electric blanket under test is good, the current inside the electric blanket will not flow into the upper or lower electrical couplings. Therefore, no current flows into the leakage circuit, and the grounding terminal of the withstand voltage tester cannot detect any current, thus preventing the alarm from being triggered.

[0010] If there is an insulation defect on the upper surface of the electric blanket being tested, the current flowing inside will flow to the upper electrical coupling and then through the grounding terminal of the upper electrical coupling to the leakage circuit. The grounding terminal of the withstand voltage tester detects the current and transmits a signal to the withstand voltage tester, which then issues a warning. If there is an insulation defect on the lower surface of the electric blanket being tested, the current flowing inside will flow to the lower electrical coupling and then through the grounding terminal of the lower electrical coupling to the leakage circuit. The grounding terminal of the withstand voltage tester detects the current and transmits a signal to the withstand voltage tester, which then issues a warning. This process is used to test the insulation performance of the electric blanket being tested.

[0011] By sequentially setting up an input motion machine, a detection machine, and an output motion machine along the transport direction, and constructing a continuous transmission system using input and output conveyor belts, and coordinating with photoelectric sensors on the detection machine to sense the arrival status of the electric blanket being tested in real time, the entire process of the electric blanket being tested, from conveying and testing to output, is fully automated. This transforms the testing process from intermittent single-inspection to continuous batch operation, improving monitoring efficiency. The coordination between the electrical coupling wheel and the conductive connection components ensures stable conductivity during dynamic transmission.

[0012] 2) A continuous withstand voltage testing device according to 1), wherein:

[0013] The input motion machine includes an input frame, with a left input tension roller and a right input tension roller respectively passing through both ends of the input frame. The left input tension roller and the right input tension roller are rotatably connected to the input frame. The left input tension roller is fitted with an input drive wheel, and the right input tension roller is fitted with an input driven wheel. The input conveyor belt is wound between the input drive wheel and the input driven wheel.

[0014] The input motion machine of this utility model includes an input frame. A left input tension roller and a right input tension roller are rotatably connected at both ends inside the input frame. An input drive wheel and an input driven wheel are respectively mounted on the left and right input tension rollers. An input conveyor belt is wound between the input drive wheel and the input driven wheel. The input drive wheel is driven by a power source to move the input conveyor belt, and the input driven wheel assists in tensioning the conveyor belt. The left and right input tension rollers maintain the tension of the input conveyor belt, preventing slippage or slack during operation and ensuring that the electric blanket being tested is smoothly transported to the testing machine.

[0015] 3) A continuous withstand voltage testing device according to 1), wherein:

[0016] An input power roller is provided between the left input tension roller and the right input tension roller. The input power roller is rotatably connected to the input frame. Input sprockets are respectively fitted at the ends of the left input tension roller, the right input tension roller and the input power roller. A first annular chain is fitted together on adjacent input sprockets. An input drive motor is coaxially connected to the input power roller and is located outside the input frame.

[0017] In this invention, an input power roller is provided between the left and right input tension rollers of the input motion machine. Input sprockets are sleeved at the ends of all three rollers, and adjacent input sprockets are driven by a first annular chain. The input power roller is coaxially connected to an input drive motor, which is controlled by a microprocessor. The power roller drives the tension roller to rotate synchronously through a chain, forming a multi-roller transmission structure to enhance the driving force.

[0018] 4) A continuous withstand voltage testing device according to 1), wherein:

[0019] The output motion machine includes an output frame, with a left output tension roller and a right output tension roller respectively provided at both ends of the output frame. The left output tension roller and the right output tension roller are rotatably connected to the output frame. The left output tension roller is fitted with an output drive wheel, and the right output tension roller is fitted with an output driven wheel. The output conveyor belt is fitted between the output drive wheel and the output driven wheel.

[0020] The output motion machine of this utility model includes an output frame. The two ends of the output frame are rotatably connected to a left output tension roller and a right output tension roller. An output driving wheel and an output driven wheel are respectively sleeved on the left output tension roller and the right output tension roller. The output conveyor belt is wound between the output driving wheel and the output driven wheel. The output driving wheel is driven by power to drive the output conveyor belt to move. The output driven wheel assists in tensioning the conveyor belt. The left output tension roller and the right output tension roller maintain the tension of the output conveyor belt, preventing the output conveyor belt from slipping or loosening during operation, and ensuring that the electric blanket to be tested is smoothly transported to the testing machine.

[0021] 5) A continuous withstand voltage testing device according to 1), wherein:

[0022] An output power roller is provided between the left output tension roller and the right output tension roller. The output power roller is rotatably connected to the output frame. Output sprockets are respectively fitted at the ends of the left output tension roller, the right output tension roller and the output power roller. Adjacent output sprockets are jointly fitted with a second annular chain. An output drive motor located outside the output frame is coaxially connected to the output power roller.

[0023] In this invention, an output power roller is provided between the left and right output tension rollers of the output motion machine. Output sprockets are sleeved at the ends of all three rollers, and adjacent output sprockets are driven by a first annular chain. The output power roller is coaxially connected to an output drive motor, which is controlled by a microprocessor. The power roller drives the tension roller to rotate synchronously through the chain, forming a multi-roller transmission structure to enhance the driving force.

[0024] 6) A continuous withstand voltage testing device according to 1), wherein:

[0025] The support frame includes several longitudinal support beams evenly distributed along the transport direction, which are symmetrically arranged on both sides above the testing machine. A long horizontal support rod is welded to the top of all the longitudinal support beams on the same side above the testing machine. Several short horizontal support rods are evenly distributed and welded between two long horizontal support rods, and each adjacent short horizontal support rod corresponds to a longitudinal support beam.

[0026] In this invention, the support frame consists of several longitudinal support beams evenly distributed along the transport direction, symmetrically arranged on both sides. Long horizontal support rods are welded to the top of the support beams on the same side, and several short horizontal support rods are welded between the two long rods to form a frame structure. The longitudinal support beams are vertically fixed above the testing machine, and the horizontal support rods are connected to the longitudinal support beams by welding to ensure the overall rigidity of the support frame. This structure provides stable support for the pressure tester and conductive connection components, preventing positional displacement due to vibration during testing.

[0027] 7) A continuous withstand voltage testing device according to 1), wherein:

[0028] The central axis of the upper electric roller is perpendicular to the transport direction of the testing machine. The two ends of each upper electric roller correspond to the longitudinal support beams on both sides of the upper part of the testing machine. The two ends of each upper electric roller are connected to the bottom of the longitudinal support beams via shaft-shaped mounting bearings. A sensing groove is provided on the upper surface of the testing machine near the input motion machine, and a photoelectric sensor is installed in the sensing groove. Several mounting grooves are provided on the upper surface of the testing machine along the transport direction, with each mounting groove corresponding to the position of one of the upper electric rollers. The two ends of the lower electric roller are connected to both sides of the testing machine via shaft-shaped mounting bearings. The upper surface of the lower electric roller protrudes from the mounting groove and corresponds to the upper electric roller. An electromagnetic switch is connected in series between the upper and lower electric rollers and their corresponding grounding terminals. The testing machine also includes a microprocessor, and the electromagnetic switch and photoelectric sensor are electrically connected to the microprocessor.

[0029] In this invention, the central axis of the upper electrical coupling is perpendicular to the transport direction, and both ends are connected to the bottom of the longitudinal support beam via shaft-shaped mounting bearings, allowing free rotation. The mounting grooves on the upper surface of the testing machine correspond one-to-one with the positions of the upper couplings. The lower electrical couplings are connected to both sides of the testing machine via shaft-shaped mounting bearings, and the protruding mounting grooves on the upper surface of the lower electrical couplings correspond to those of the upper electrical couplings. Both the upper and lower electrical couplings are connected in series with their corresponding grounding terminals via electromagnetic switches, which are controlled by a microprocessor.

[0030] A sensing groove is located on the upper surface of the testing machine near the input motion mechanism. A photoelectric sensor is installed in the sensing groove to sense the arrival status of the electric blanket being tested in real time. When the photoelectric sensor detects that the electric blanket being tested has been delivered to the testing machine, it sends a signal to the microprocessor. The microprocessor then issues a command to close the electromagnetic switch. When the photoelectric sensor detects that the electric blanket being tested has been delivered away from the testing machine, it sends a signal to the microprocessor. The microprocessor then issues a command to open the electromagnetic switch. The microprocessor controls the on / off state of the grounding circuit through the electromagnetic switch to ensure that the circuit is conductive during testing and disconnected when not testing, thus ensuring safety. The upper and lower electric rollers are mounted with bearings to allow for flexible rotation, facilitating the passage of the electric blanket being tested.

[0031] 8) A continuous withstand voltage testing device according to 7), wherein:

[0032] Each of the lower electrical couplings has a drive sprocket fixed to one end of its shaft with a bearing. All drive sprockets are fitted with a third annular chain along the transport direction. The third annular chain meshes with each drive sprocket. A servo motor located outside the testing machine is coaxially connected to one of the drive sprockets.

[0033] In this invention, a drive sprocket is fixed to one end of the shaft-shaped bearing of each lower electrical pair wheel. All drive sprockets are driven by meshing through a third annular chain. One of the drive sprockets is coaxially connected to a servo motor, which is controlled by a microprocessor. The chain drive drives all lower electrical pairs wheel to rotate synchronously. The speed of the lower electrical pairs wheel is matched with that of the conveyor belt, which drives the electric blanket being tested to pass smoothly through the detection area.

[0034] 9) A continuous withstand voltage testing device according to 1), wherein:

[0035] The conductive connection assembly includes a socket support frame with a rectangular frame structure. The socket support frame is disposed on the upper surface of the support frame and extends above the input motion machine. A first transmission roller and a second transmission roller are respectively disposed at both ends of the socket support frame. The first transmission roller and the second transmission roller are perpendicular to the transport direction. An annular socket conveyor belt is sleeved between the first transmission roller and the second transmission roller.

[0036] The conductive connection assembly of this utility model includes a socket support frame with a rectangular frame structure. The socket support frame is set on the upper surface of the support frame and extends above the input motion machine. Its rectangular frame structure can provide stable support and ensure that the electrical connection accuracy between the socket and the tested electric blanket will not be affected by shaking during operation. The first transmission roller and the second transmission roller set at both ends of the frame provide a rotational support foundation for the annular socket conveyor belt. The cooperative design between the first transmission roller, the second transmission roller and the conveyor belt makes the socket conveyor belt run smoothly and avoids problems such as slippage and deviation, thereby ensuring that the socket can be accurately delivered to the designated position.

[0037] A reciprocating conveyor belt for the socket, running between the first and second drive rollers, ensures a continuous flow of sockets to the testing area. This significantly improves testing efficiency compared to single or intermittent transport, meeting the efficiency requirements of continuous withstand voltage testing equipment. Furthermore, the reciprocating design saves space, making the overall structure more compact, and the conveyor belt's speed matches the transport speed of the tested electric blanket.

[0038] 10) A continuous withstand voltage testing device according to 9), wherein:

[0039] The annular socket conveyor belt has a reverse belt surface facing inwards towards the input motion machine and a positive belt surface facing outwards towards the input motion machine. The reverse belt surface is sequentially provided with a B0 mark and a socket B1 along the transport direction. The positive belt surface is sequentially provided with a socket A1 and an A0 mark along the transport direction. The distance between the B0 mark and the socket B1 is equal to the distance between the A0 mark and the socket A1. An A1 electrode slider is provided at the position of the socket A1 facing the positive belt surface, and a B1 electrode slider is provided at the position of the socket B1 facing the reverse belt surface. An electrode slider is provided between the positive and reverse belt surfaces along the transport direction. The upper and lower ends are respectively welded to the inner sides of the upper and lower frames of the socket support frame. The electrode slider is located at the rear end of the A0 mark along the transport direction. The electrode slider has an A1 micro groove facing the positive band surface and a B1 micro groove facing the negative band surface. The A1 electrode slider extends through the positive band surface into the A1 micro groove and forms a sliding electrical connection with the electrode slider. The B1 electrode slider extends through the negative band surface into the B1 micro groove and forms a sliding electrical connection with the electrode slider. The electrode slider is electrically connected to the high voltage output terminal of the withstand voltage tester.

[0040] In this utility model, the front and back sides of the annular socket conveyor belt are respectively provided with socket A1, socket B1, and A0 and B0 markings. This design allows for alternating testing using the sockets on both sides during the reciprocating operation of the conveyor belt, achieving continuous testing. The A1 electrode slider and the B1 electrode slider form an electrical connection with the electrode slider, transforming the static connection into a dynamic contact, so that the socket maintains a continuous electrical connection with the high-voltage end of the withstand voltage tester during the reciprocating movement of the conveyor belt.

[0041] The electrode slider is electrically connected to the high-voltage output of the withstand voltage tester. The electrode slider is fixed by welding its upper and lower ends to the socket support frame, avoiding the risk of loosening and ensuring reliable conductivity during long-term high-frequency operation. Simultaneously, the electrode slider passes through the conveyor belt and slides into contact with the miniature grooves of the slider. These grooves limit and guide the slider, maximizing the contact area between the slider and the slider and preventing deviation, thus ensuring stable high-voltage transmission.

[0042] The A0 and B0 markings provide a precise reference for socket positioning. When the conveyor belt is running, the operator can accurately determine whether socket A1 and socket B1 have reached the designated position by identifying the positions of the A0 and B0 markings, and take corresponding measures according to the actual situation.

[0043] Compared with the prior art, this utility model also has the following technical effects:

[0044] In this invention, both the input and output motion machines employ a multi-roller chain drive structure. Sprockets are fitted at the ends of the left and right tension rollers and the power roller, and transmission is achieved through the meshing of a ring chain. The power roller is coaxially connected to a drive motor and controlled by a microprocessor. This structure effectively enhances the conveyor belt's driving force, avoiding the slippage problem inherent in single-roller drives. Simultaneously, the synchronous rotation of multiple rollers ensures smooth conveyor belt operation. Combined with precise microprocessor control of motor start / stop and speed, it enables accurate adjustment of the conveying speed of the tested electric blanket, allowing it to enter or leave the testing area at the required speed. This lays the foundation for the accuracy and continuity of subsequent pressure resistance testing.

[0045] Meanwhile, the grounding lines of the upper and lower electrical couplings are connected in series with magnetic switches, and the electromagnetic switches are electrically connected to the microprocessor. During testing, the microprocessor controls the switches to close, quickly establishing a complete grounding loop; in non-testing states, the switches open to cut off the loop, avoiding potential safety hazards. This automated control method not only improves the safety of equipment use but also effectively reduces the wear and tear on electrical components, extends the equipment's lifespan, and ensures that the loop status is accurate and controllable during each test, thus improving the reliability of the test results.

[0046] In addition, the front and back sides are respectively equipped with sockets A1 and B1. The electrode sliders on the sockets slide through the miniature grooves of the electrode sliders and are electrically connected. The electrode sliders are connected to the high-voltage end of the withstand voltage tester. This design allows the sockets on the front and back sides to be used alternately for testing during the reciprocating operation of the conveyor belt, thus achieving continuous testing. The dynamic sliding contact electrode connection method breaks the limitations of traditional static connection and ensures that the sockets are continuously and stably powered to the high-voltage end during the movement. Attached Figure Description

[0047] Figure 1 This is a schematic diagram of the structure of a continuous withstand voltage testing device according to the present invention;

[0048] Figure 2 This is a cross-sectional view (AA) of a continuous withstand voltage testing device according to this utility model.

[0049] Figure 3 This is a partial enlarged view at point B of the structural schematic diagram of a continuous withstand voltage testing device according to this utility model;

[0050] Figure 4 This is a top view of a continuous withstand pressure testing device according to this utility model;

[0051] Figure 5 This is a schematic diagram of the socket support frame structure of a continuous withstand voltage testing device according to this utility model. Detailed Implementation

[0052] The following detailed description illustrates the specific implementation method:

[0053] The reference numerals in the accompanying drawings include: 1. Input motion machine; 2. Detection machine; 3. Output motion machine; 4. Support frame; 5. Pressure tester; 6. Socket support frame; 7. First transmission roller; 8. Second transmission roller; 9. Annular socket conveyor belt; 10. Socket A1; 11. Left input tension roller; 12. Right input tension roller; 13. Input drive roller; 14. Input sprocket; 15. Input driven roller; 16. First annular chain; 17. Input frame; 18. Left output tension roller; 19. Right output tension roller. 0. Output sprocket 21. Output driven wheel 22. Output power roller 23. Output drive wheel 24. Second ring chain 25. Output conveyor belt 26. Input conveyor belt 27. Output frame 28. Induction slot 29. Upper electric coupling 30. Lower electric coupling 31. Third ring chain 32. Output drive motor 33. Servo motor 34. Input drive motor 35. Transmission motor 36. A0 mark 37. B0 mark 38. Socket B1 39. Shaft mounting bearing 40. Mounting slot 41.

[0054] Reference will now be made in detail to the embodiments disclosed herein. Although the disclosure will be described in conjunction with embodiments and / or examples, they are not intended to limit the disclosure to these embodiments and / or examples. Rather, the disclosure covers alternatives, modifications, and equivalents.

[0055] See the example. Figure 1 As shown, this embodiment is a continuous withstand voltage testing device, characterized in that it includes an input conveyor 1, a testing machine 2, and an output conveyor arranged sequentially along the transport direction. The input conveyor 1 has an input conveyor belt 27 that transports the tested electric blanket toward the testing machine 2. A support frame 4 is provided above the testing machine 2. A withstand voltage tester 5 and a conductive connection assembly are provided on the upper surface of the support frame 4. The high voltage output terminal of the withstand voltage tester 5 is electrically connected to the tested electric blanket through the conductive connection assembly. The withstand voltage tester 5 is provided with a grounding terminal for detecting leakage current. Several upper electrical rollers 30 are provided at the lower part of the support frame 4. Several rotatable lower electrical rollers 31 are installed on the upper surface of the testing machine 2. The upper electrical rollers 30 and lower electrical rollers 31 are respectively provided with grounding terminals for conducting electricity. The positions of the upper electrical rollers 30 and lower electrical rollers 31 correspond one-to-one, and there is a gap between the upper electrical rollers 30 and lower electrical rollers 31 for the tested electric blanket to pass through. The output conveyor has an output conveyor belt 26 that outputs the tested electric blanket outward along the transport direction.

[0056] In this invention, the input motion machine 1 transports the electric blanket to be tested via the input conveyor belt 27, ensuring that the electric blanket enters the testing area along a preset path. After the test is completed, the output conveyor belt 26 of the output motion machine transports the electric blanket to be tested outward along the transport direction. The support frame 4 above the testing machine 2 carries the withstand voltage tester 5 and the conductive connection assembly. The high voltage output end of the withstand voltage tester 5 is electrically connected to the electric blanket to be tested through the conductive connection assembly. The withstand voltage tester 5 is equipped with a grounding terminal for detecting leakage current. The upper electrical roller 30 at the bottom of the support frame 4 corresponds one-to-one with the lower electrical roller 31 on the upper surface of the testing machine 2. A gap is formed between the upper electrical roller 30 and the lower electrical roller 31 for the electric blanket to pass through. The upper electrical roller 30 and the lower electrical roller 31 are respectively connected to the grounding terminal through elastic brush plates.

[0057] The grounding terminal of the withstand voltage tester 5, the grounding terminal of the upper electrical coupling 30, and the grounding terminal of the lower electrical coupling 31 all belong to the same leakage circuit. The withstand voltage tester 5 supplies power to the electric blanket under test through the conductive connection component. The electric blanket under test enters the gap between the upper electrical coupling 30 and the lower electrical coupling 31 along the transport direction. If the insulation performance of the electric blanket under test is good, the current inside the electric blanket under test will not flow into the upper electrical coupling 30 or the lower electrical coupling 31. Therefore, no current flows into the leakage circuit, and the grounding terminal of the withstand voltage tester 5 cannot detect the current, so no alarm will be triggered.

[0058] If there is an insulation defect on the upper surface of the electric blanket being tested, the current flowing inside will flow to the upper electrical coupling 30 and then through the grounding terminal of the upper electrical coupling 30 to the leakage circuit. The grounding terminal of the withstand voltage tester 5 detects the current and transmits a signal to the withstand voltage tester 5, which then issues a warning. If there is an insulation defect on the lower surface of the electric blanket being tested, the current flowing inside will flow to the lower electrical coupling 31 and then through the grounding terminal of the lower electrical coupling 31 to the leakage circuit. The grounding terminal of the withstand voltage tester 5 detects the current and transmits a signal to the withstand voltage tester 5, which then issues a warning. This process is used to test the insulation performance of the electric blanket being tested.

[0059] By sequentially setting up an input motion machine 1, a detection machine 2, and an output motion machine along the transport direction, and constructing a continuous transmission system using an input conveyor belt 27 and an output conveyor belt 26, and cooperating with the photoelectric sensor on the detection machine 2 to sense the arrival status of the electric blanket being tested in real time, the entire process of the electric blanket being tested, from conveying and testing to output, is fully automated. This transforms the testing process from intermittent single inspection to continuous batch operation, improving monitoring efficiency. The cooperation between the electrical coupling wheel and the conductive connection component ensures stable conductivity during dynamic transmission.

[0060] The input motion machine 1 includes an input frame 18. A left input tension roller 11 and a right input tension roller 12 are respectively installed at both ends of the input frame 18. The left input tension roller 11 and the right input tension roller 12 are rotatably connected to the input frame 18. An input drive wheel 14 is sleeved on the left input tension roller 11, and an input driven wheel 16 is sleeved on the right input tension roller 12. An input conveyor belt 27 is wound between the input drive wheel 14 and the input driven wheel 16.

[0061] In this invention, the input motion machine 1 includes an input frame 18. A left input tension roller 11 and a right input tension roller 12 are rotatably connected at both ends inside the input frame 18. An input drive roller 14 and an input driven roller 16 are respectively mounted on the left input tension roller 11 and the right input tension roller 12. An input conveyor belt 27 is wound between the input drive roller 14 and the input driven roller 16. The input drive roller 14, driven by a power source, drives the input conveyor belt 27, while the input driven roller 16 assists in tensioning the conveyor belt. The left input tension roller 11 and the right input tension roller 12 maintain the tension of the input conveyor belt 27, preventing slippage or slackness during operation and ensuring the electric blanket being tested is smoothly transported to the testing machine 2.

[0062] An input power roller 13 is provided between the left input tension roller 11 and the right input tension roller 12. The input power roller 13 is rotatably connected to the input frame 18. The ends of the left input tension roller 11, the right input tension roller 12 and the input power roller 13 are respectively fitted with input sprockets 15. Adjacent input sprockets 15 are fitted with a first annular chain 17. The input power roller 13 is coaxially connected to an input drive motor 35 located outside the input frame 18.

[0063] In this invention, an input power roller 13 is provided between the left input tension roller 11 and the right input tension roller 12 of the input motion machine 1. Input sprockets 15 are sleeved at the ends of all three rollers. Adjacent input sprockets 15 are driven by a first annular chain 17. The input power roller 13 is coaxially connected to an input drive motor 35, which is controlled by a microprocessor. The power roller drives the tension roller to rotate synchronously through the chain, forming a multi-roller transmission structure to enhance the driving force.

[0064] The output motion machine includes an output frame 28, with a left output tension roller 19 and a right output tension roller 20 respectively at both ends of the output frame 28. The left output tension roller 19 and the right output tension roller 20 are rotatably connected to the output frame 28. The left output tension roller 19 is fitted with an output drive wheel 24, and the right output tension roller 20 is fitted with an output driven wheel 22. The output conveyor belt 26 is fitted between the output drive wheel 24 and the output driven wheel 22.

[0065] The output motion machine of this utility model includes an output frame 28. The two ends of the output frame 28 are rotatably connected to a left output tension roller 19 and a right output tension roller 20. An output drive wheel 24 and an output driven wheel 22 are respectively sleeved on the left output tension roller 19 and the right output tension roller 20. An output conveyor belt 26 is wound between the output drive wheel 24 and the output driven wheel 22. The output drive wheel 24 is driven by power to drive the output conveyor belt 26 to move. The output driven wheel 22 assists in tensioning the conveyor belt. The left output tension roller 19 and the right output tension roller 20 maintain the tension of the output conveyor belt 26, preventing the output conveyor belt 26 from slipping or loosening during operation, and ensuring that the electric blanket to be tested is stably transported to the testing machine 2.

[0066] An output power roller 23 is provided between the left output tension roller 19 and the right output tension roller 20. The output power roller 23 is rotatably connected to the output frame 28. The ends of the left output tension roller 19, the right output tension roller 20 and the output power roller 23 are respectively fitted with output sprockets 21. Adjacent output sprockets 21 are fitted with a second annular chain 25. The output power roller 23 is coaxially connected to an output drive motor 33 located outside the output frame 28.

[0067] In this utility model, an output power roller 23 is provided between the left output tension roller 19 and the right output tension roller 20 of the output motion machine. Output sprockets 21 are sleeved at the ends of all three. Adjacent output sprockets 21 are driven by a first annular chain 17. The output power roller 23 is coaxially connected to an output drive motor 33, which is controlled by a microprocessor. The power roller drives the tension roller to rotate synchronously through the chain, forming a multi-roller transmission structure to enhance the driving force.

[0068] The support frame 4 includes several longitudinal support beams evenly distributed along the transport direction. The longitudinal support beams are symmetrically arranged on both sides above the testing machine 2. A long horizontal support rod is welded to the top of all the longitudinal support beams on the same side above the testing machine 2. Several short horizontal support rods are evenly distributed and welded between two long horizontal support rods. Each adjacent short horizontal support rod corresponds to a longitudinal support beam.

[0069] In this invention, the support frame 4 consists of several longitudinal support beams evenly distributed along the transport direction, symmetrically arranged on both sides. Long horizontal support rods are welded to the top of the support beams on the same side, and several short horizontal support rods are welded between the two long rods to form a frame structure. The longitudinal support beams are vertically fixed above the testing machine 2, and the horizontal support rods are connected by welding to ensure the overall rigidity of the support frame 4. This structure provides stable support for the pressure tester 5 and the conductive connection assembly, preventing positional displacement due to vibration during testing.

[0070] The central axis of the upper electric roller 30 is perpendicular to the transport direction of the testing machine 2. The two ends of each upper electric roller 30 correspond to the longitudinal support beams on both sides above the testing machine 2. The two ends of each upper electric roller 30 are connected to the bottom of the longitudinal support beams through shaft-shaped mounting bearings 40. A sensing groove 29 is provided on the upper surface of the testing machine 2 near the input motion machine 1. A photoelectric sensor is provided in the sensing groove 29. Several mounting grooves 41 are provided on the upper surface of the testing machine 2 along the transport direction. The position of each mounting groove 41 corresponds one-to-one with the position of the upper electric roller 30. The two ends of the lower electric roller 31 are connected to both sides of the testing machine 2 through shaft-shaped mounting bearings 40. The mounting grooves 41 protrude from the upper surface of the lower electric roller 31 and correspond to the upper electric roller 30. An electromagnetic switch is connected in series between the upper electric roller 30 and the lower electric roller 31 and their corresponding grounding terminals. The testing machine also includes a microprocessor. The electromagnetic switch and the photoelectric sensor are electrically connected to the microprocessor.

[0071] In this utility model, the central axis of the upper electric coupling 30 is perpendicular to the transport direction, and both ends are connected to the bottom of the longitudinal support beam through shaft-shaped mounting bearings 40, allowing it to rotate freely; the mounting grooves 41 on the upper surface of the testing machine 2 correspond one-to-one with the positions of the upper coupling, and both ends of the lower electric coupling 31 are connected to both sides of the testing machine 2 through shaft-shaped mounting bearings 40, with the mounting grooves 41 protruding from the upper surface of the lower electric coupling 31 corresponding to the upper electric coupling 30.

[0072] The upper electrical coupling 30 and the lower electrical coupling 31 are each provided with a conductive groove facing inwards towards the testing machine 2. The conductive groove is a smooth annular groove opened on the end plane of the upper electrical coupling 30 and the lower electrical coupling 31. An elastic brush plate is connected between the electromagnetic switch and the annular groove and fixed on the frame to form a leakage path, so as to achieve electrical continuity during rotation. The electromagnetic switch is controlled by a microprocessor to open and close.

[0073] A sensing groove 29 is provided on the upper surface of the testing machine 2 near the input motion machine 1. A photoelectric sensor is installed in the sensing groove 29. The photoelectric sensor is used to sense the arrival status of the electric blanket being tested in real time. When the photoelectric sensor detects that the electric blanket being tested is being delivered to the testing machine 2, it sends a signal to the microprocessor, and the electromagnetic switch controls the grounding circuit to be turned on. When the electric blanket being tested leaves, it is turned off. The upper electric roller 30 and the lower electric roller 31 are mounted with bearings to achieve flexible rotation, so that the electric blanket being tested can pass smoothly.

[0074] Each lower electric coupling 31 has a drive sprocket fixed to one end of a shaft-shaped bearing 40. All drive sprockets are fitted with a third annular chain 32 along the transport direction. The third annular chain 32 meshes with each drive sprocket. A servo motor 34, which is located outside the testing machine 2, is coaxially connected to one of the drive sprockets.

[0075] In this invention, a drive sprocket is fixed to one end of the shaft-shaped mounting bearing 40 of each lower electrical pair 31. All drive sprockets are driven by meshing through a third annular chain 32. One of the drive sprockets is coaxially connected to a servo motor 34, which is controlled by a microprocessor. The chain drive drives all lower electrical pairs 31 to rotate synchronously. The speed of the lower electrical pairs 31 is consistent with that of the input conveyor belt 27, which drives the electric blanket being tested to pass smoothly through the detection area.

[0076] The conductive connection assembly includes a socket support frame 6 with a rectangular frame structure. The socket support frame 6 is disposed on the upper surface of the support frame 4 and extends above the input motion machine 1. A first transmission roller 7 and a second transmission roller 8 are respectively disposed at both ends of the socket support frame 6. The first transmission roller 7 and the second transmission roller 8 are perpendicular to the transport direction. An annular socket conveyor belt 9 is sleeved between the first transmission roller 7 and the second transmission roller 8. The running speed of the annular socket conveyor belt 9 is matched with that of the input conveyor belt 27. The upper end of the first transmission roller 7 passes through the socket support frame 6 and is connected to a drive motor 36. The drive motor 36 is fixed on the support frame 4.

[0077] The conductive connection assembly of this utility model includes a socket support frame 6 with a rectangular frame structure. The socket support frame 6 is disposed on the upper surface of the support frame 4 and extends above the input motion machine 1. Its rectangular frame structure can provide stable support and ensure that the electrical connection accuracy between the socket and the tested electric blanket will not be affected by shaking during operation. The first transmission roller 7 and the second transmission roller 8 disposed at both ends of the frame provide a rotational support foundation for the annular socket conveyor belt 9. The cooperative design between the first transmission roller 7, the second transmission roller 8 and the annular socket conveyor belt 9 makes the annular socket conveyor belt 9 run smoothly and avoid problems such as slippage and deviation, thereby ensuring that the socket can be accurately moved to the designated position.

[0078] After the electric blanket under test is connected to the socket, the input conveyor 1 can move the electric blanket under test towards the testing machine 2 via the input conveyor belt 27. Therefore, the electric blanket under test moves towards the testing machine 2 along with the input conveyor belt 27. During the movement of the electric blanket under test, since it is connected to the socket on the annular socket conveyor belt 9, the socket on the annular socket conveyor belt 9 also moves with the electric blanket under test. After the electric blanket under test enters the testing machine 2 and completes the test, the next electric blanket under test enters the testing machine 2 in the same manner for testing. This testing method allows the socket to be continuously transported to the testing area, which greatly improves the testing efficiency compared to single or intermittent transport and meets the testing efficiency requirements of continuous withstand voltage testing equipment. At the same time, the annular design also saves equipment space and makes the overall structure more compact.

[0079] The annular socket conveyor belt 9 has a reverse belt surface facing the inside of the input motion machine 1 and a positive belt surface facing the outside of the input motion machine 1. The reverse belt surface has a B0 mark 38 and a socket B139 sequentially arranged along the transport direction. The positive belt surface has a socket A110 and an A0 mark 37 sequentially arranged along the transport direction. The distance between the B0 mark 38 and the socket B139 is equal to the distance between the socket A110 and the A0 mark 37. An A1 electrode slider is provided at the position of the socket A110 facing the positive belt surface, and a B1 electrode slider is provided at the position of the socket B139 facing the reverse belt surface. A [missing information - likely a design feature] is provided between the positive and reverse belt surfaces. The electrode slider has an electrode slide bar with its upper and lower ends welded to the inner sides of the upper and lower frames of the socket support frame 6, respectively. The electrode slide bar is located at the rear end of mark A0 37 along the transport direction. The electrode slide bar has an A1 micro groove facing the positive band surface and a B1 micro groove facing the negative band surface. The A1 electrode slide bar extends through the positive band surface into the A1 micro groove and forms a sliding electrical connection with the electrode slide bar. The B1 electrode slide bar extends through the negative band surface into the B1 micro groove and forms a sliding electrical connection with the electrode slide bar. The electrode slide bar is electrically connected to the high voltage output terminal of the withstand voltage tester 5.

[0080] In this invention, the annular socket conveyor belt 9 has sockets A110 and B139 on its front and back sides, respectively, and A0 markings 37 and B0 markings 38. This design allows for continuous detection during the reciprocating operation of the conveyor belt by alternating detection using sockets A110 and B139. Sockets A110 and B139 contain conductive copper blocks integrally formed with the metal inserts. The insulating outer shells of sockets A110 and B139 each have through holes corresponding to the positions of the electrode sliders. Each conductive copper block is provided with an internally threaded hole, which is coaxially arranged with the through hole. One end of the A1 electrode slider and the B1 electrode slider is provided with an external thread. The electrode slider is threadedly connected to the internally threaded hole of the conductive copper block through the external thread. The other end of the A1 electrode slider and the B1 electrode slider extends through the annular socket conveyor belt 9 into the micro groove of the electrode slider and forms a sliding electrical connection with the electrode slider, which transforms the static connection into a dynamic contact, so that the socket maintains a continuous electrical connection with the high voltage end of the withstand voltage tester 5 as it moves with the conveyor belt.

[0081] The electrode slider is electrically connected to the high-voltage output of the withstand voltage tester 5. The electrode slider is fixed by welding its upper and lower ends to the socket support frame 6, avoiding the risk of loosening and ensuring that the slider maintains reliable conductivity during long-term high-frequency operation. At the same time, the electrode slider slides through the miniature groove of the slider and makes contact with it. The groove limits and guides the slider, maximizing the contact area between the slider and the slider and preventing it from shifting, thus ensuring stable high-voltage transmission. The A0 mark 37 and B0 mark 38 provide accurate reference for socket positioning. When the conveyor belt is running, the system can determine whether sockets A110 and B139 have reached the designated position by identifying the positions of A0 mark 37 and B0 mark 38, and take corresponding measures according to the actual situation. The A0 mark 37 is set at the end of the effective contact area of ​​the electrode slider, so that when socket A110 moves with the conveyor belt to A0 mark 37, the electrode slider disengages from the slider groove in advance, cutting off the high-voltage circuit.

[0082] The above are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A continuous withstand voltage detection device, characterized by, The device includes an input conveyor, a testing machine, and an output conveyor arranged sequentially along the transport direction. The input conveyor has an input conveyor belt that transports the electric blanket under test toward the testing machine. A support frame is provided above the testing machine. A withstand voltage tester and a conductive connection assembly are provided on the upper surface of the support frame. The high-voltage output terminal of the withstand voltage tester is electrically connected to the electric blanket under test through the conductive connection assembly. The withstand voltage tester has a grounding terminal for detecting leakage current. Several upper electrical rollers are provided at the lower part of the support frame. Several rotatable lower electrical rollers are installed on the upper surface of the testing machine. Each upper and lower electrical roller has a grounding terminal for conducting electricity. The positions of the upper and lower electrical rollers correspond one-to-one, and there is a gap between the upper and lower electrical rollers for the electric blanket under test to pass through. The output conveyor has an output conveyor belt that outputs the electric blanket under test outward along the transport direction.

2. The continuous pressure detection device according to claim 1, wherein The input motion machine includes an input frame, with a left input tension roller and a right input tension roller respectively passing through both ends of the input frame. The left input tension roller and the right input tension roller are rotatably connected to the input frame. The left input tension roller is fitted with an input drive wheel, and the right input tension roller is fitted with an input driven wheel. The input conveyor belt is wound between the input drive wheel and the input driven wheel.

3. The continuous pressure detection device according to claim 2, wherein An input power roller is provided between the left input tension roller and the right input tension roller. The input power roller is rotatably connected to the input frame. Input sprockets are respectively fitted at the ends of the left input tension roller, the right input tension roller and the input power roller. A first annular chain is fitted together on adjacent input sprockets. An input drive motor is coaxially connected to the input power roller and is located outside the input frame.

4. The continuous pressure detection device according to claim 1, wherein The output motion machine includes an output frame, with a left output tension roller and a right output tension roller respectively provided at both ends of the output frame. The left output tension roller and the right output tension roller are rotatably connected to the output frame. The left output tension roller is fitted with an output drive wheel, and the right output tension roller is fitted with an output driven wheel. The output conveyor belt is fitted between the output drive wheel and the output driven wheel.

5. The continuous pressure detection device according to claim 4, wherein An output power roller is provided between the left output tension roller and the right output tension roller. The output power roller is rotatably connected to the output frame. Output sprockets are respectively fitted at the ends of the left output tension roller, the right output tension roller and the output power roller. Adjacent output sprockets are jointly fitted with a second annular chain. An output drive motor located outside the output frame is coaxially connected to the output power roller.

6. The continuous withstand voltage detection apparatus according to claim 1, wherein The support frame includes several longitudinal support beams evenly distributed along the transport direction, which are symmetrically arranged on both sides above the testing machine. A long horizontal support rod is welded to the top of all the longitudinal support beams on the same side above the testing machine. Several short horizontal support rods are evenly distributed and welded between two long horizontal support rods, and each adjacent short horizontal support rod corresponds to a longitudinal support beam.

7. The continuous pressure detection device according to claim 1, wherein The central axis of the upper electric roller is perpendicular to the transport direction of the testing machine. The two ends of each upper electric roller correspond to the longitudinal support beams on both sides of the upper part of the testing machine. The two ends of each upper electric roller are connected to the bottom of the longitudinal support beams via shaft-shaped mounting bearings. A sensing groove is provided on the upper surface of the testing machine near the input motion machine, and a photoelectric sensor is installed in the sensing groove. Several mounting grooves are provided on the upper surface of the testing machine along the transport direction, with each mounting groove corresponding to the position of one of the upper electric rollers. The two ends of the lower electric roller are connected to both sides of the testing machine via shaft-shaped mounting bearings. The upper surface of the lower electric roller protrudes from the mounting groove and corresponds to the upper electric roller. An electromagnetic switch is connected in series between the upper and lower electric rollers and their corresponding grounding terminals. The testing machine also includes a microprocessor, and the electromagnetic switch and photoelectric sensor are electrically connected to the microprocessor.

8. The continuous pressure detection device according to claim 7, wherein Each of the lower electrical couplings has a drive sprocket fixed to one end of its shaft with a bearing. All drive sprockets are fitted with a third annular chain along the transport direction. The third annular chain meshes with each drive sprocket. A servo motor located outside the testing machine is coaxially connected to one of the drive sprockets.

9. The continuous pressure detection device according to claim 1, wherein The conductive connection assembly includes a socket support frame with a rectangular frame structure. The socket support frame is disposed on the upper surface of the support frame and extends above the input motion machine. A first transmission roller and a second transmission roller are respectively disposed at both ends of the socket support frame. The first transmission roller and the second transmission roller are perpendicular to the transport direction. An annular socket conveyor belt is sleeved between the first transmission roller and the second transmission roller.

10. The continuous pressure detection device according to claim 9, wherein The annular socket conveyor belt has a reverse belt surface facing inwards towards the input motion machine and a positive belt surface facing outwards towards the input motion machine. The reverse belt surface is sequentially marked with a B0 mark and a socket B1 along the transport direction. The positive belt surface is sequentially marked with a socket A1 and an A0 mark along the transport direction. The distance between the B0 mark and the socket B1 is equal to the distance between the A0 mark and the socket A1. A1 electrode slider is located at the position facing the positive belt surface of socket A1, and a B1 electrode slider is located at the position facing the reverse belt surface of socket B1. An electrode slide is located between the positive and reverse belt surfaces along the transport direction. The upper and lower ends of the electrode slide are welded to the inner sides of the upper and lower frames of the socket support frame, respectively. The electrode slide is located at the rear end of the A0 mark along the transport direction. The electrode slider has a micro-groove A1 at the position facing the positive band surface, and a micro-groove B1 at the position facing the negative band surface. The A1 electrode slider extends through the positive band surface into the A1 micro-groove and forms a sliding electrical connection with the electrode slider. The B1 electrode slider extends through the reverse band surface into the B1 micro groove and forms a sliding electrical connection with the electrode slider; The electrode slider is electrically connected to the high-voltage output terminal of the withstand voltage tester.

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