Electric fire heating furnace circuit board multi-electric-variable comprehensive test equipment and test method

Abstract

The embodiment of the invention provides a multi-electric-variable comprehensive test device and method for an electric fire heating furnace circuit board. The multi-electric-variable comprehensive test device comprises a measuring assembly, a pressing assembly and two monitoring heads. The measuring assembly comprises a circuit board, a power supply connector, a current testing point, a voltage testing point and a power supply head. The pressing assembly is used for pressing the circuit board and keeping the two monitoring heads in contact with the voltage testing point and the current testing point respectively. Relates to the field of electrical variable measurement. By arranging the measuring assembly, the pressing assembly and the two monitoring heads, when the circuit board is detected, the circuit board can be stably pressed and positioned through the pressing assembly, so that the circuit board is kept in a fixed state in the testing process, and meanwhile, the monitoring heads can be stably in contact with a voltage testing point and a current testing point; therefore, reliable measurement of voltage, current and other electrical variables is realized.

Description

Technical Field

[0001] This invention relates to the field of measuring electrical variables, specifically to a comprehensive testing device and method for multiple electrical variables of an electric heating furnace circuit board. Background Technology

[0002] An electric heating furnace is a device that converts electrical energy into heat energy for rapid heating. In actual production, it typically contains a circuit board to control heating power, operating status, and safety protection functions. To ensure stable operation of the electric heating furnace before it leaves the factory, key electrical parameters on the circuit board need to be tested, such as supply voltage, current magnitude, and related electrical signal status. This testing process usually requires contact measurements at voltage and current test points on the circuit board using specialized testing equipment to obtain information about the electrical variables of the circuit board under operating conditions.

[0003] In existing technologies, the measurement of electrical variables on circuit boards is often achieved manually by placing test probes or fixtures into test points on the circuit board. However, in actual production, due to manufacturing errors in batches, the positions of test points on different batches of circuit boards may vary slightly. When the probe position of the testing equipment is fixed, poor contact between the probe and the test point can easily occur, leading to unstable electrical variable measurement results or even failure to detect electrical variables. Furthermore, existing testing methods typically require manual operation of multiple steps, including circuit board clamping, power supply connection, and test probe positioning. This is not only inefficient but also prone to affecting the accuracy of electrical variable measurements due to unstable human operation. Therefore, there is an urgent need for a comprehensive testing device that can stably clamp circuit boards, automatically connect to the power supply, and achieve stable measurement of electrical variables such as voltage and current. Summary of the Invention

[0004] According to embodiments of the present invention, a comprehensive testing device and method for multiple electrical variables of an electric heating furnace circuit board are provided. This addresses the technical problems existing in the background art described above.

[0005] In a first aspect of the present invention, a comprehensive testing device for multiple electrical variables of an electric heating furnace circuit board is provided.

[0006] This comprehensive testing equipment for multiple electrical variables of the circuit board of the electric starter furnace includes a measuring component, a clamping component, and two monitoring heads; The measurement components include a circuit board, a power connector, current test points, voltage test points, and a power supply head; The circuit board is provided with a power supply connector, which serves as the power supply terminal of the circuit board and can be plugged into the power supply head. The current test point and the voltage test point are located at the bottom of the circuit board, and the two monitoring heads are used to contact the voltage test point and the current test point respectively. The clamping assembly is used to clamp the circuit board and keep the two monitoring heads in contact with the voltage test point and the current test point, respectively.

[0007] Preferably, the measuring component further includes a display screen, which is integrated on the bracket; The display screen is used to show the voltage and current values ​​detected by the two monitoring heads.

[0008] Preferably, the clamping assembly includes a clamping part, a pressure plate, a plurality of pressure rods, a pad, and a housing; The pressing part is connected to the pressure plate, and a plurality of pressure rods are located below the pressure plate. The pad is provided with a positioning groove for placing the circuit board. The bottom ends of the plurality of pressure rods abut against the top of the circuit board. The pad is disposed on the housing; The pad is provided with two holes with diameters larger than the voltage test point and the current test point, and the two holes correspond to the voltage test point and the current test point respectively.

[0009] Preferably, the clamping part includes a seat, a first connector, a second connector, a handrail, a protrusion, and a connecting rod; The seat is connected to the bracket, the seat is rotatably connected to the first connecting member, the first connecting member is rotatably connected to the second connecting member, the second connecting member is rotatably connected to the connecting rod, the connecting rod is connected to the pressure plate, the connecting rod is slidably connected to the protrusion, and the protrusion is connected to the seat. The handrail is mounted on the first connector; When the first connector, the second connector, and the connecting rod are parallel to each other, the plurality of pressure rods on the pressure plate can press the circuit board tightly, and the pressure rods cannot move away from the circuit board. Operating the handrail allows the first connector, the second connector, and the connecting rod to be deparallel, thereby releasing the fixed constraint on the circuit board.

[0010] Preferably, it also includes an auxiliary component, which includes multiple sets of limiting rods and a first spring; The limiting rod is connected to the pad and slidably connected to the housing. The first spring is sleeved on the limiting rod, and the two ends of the first spring are respectively connected to the limiting rod and the inner side of the housing.

[0011] Preferably, it further includes a first triggering component, which includes a fixing frame, a slide groove, a first roller, a trigger rod, a main shaft, a sleeve, a trapezoidal block, and a roller; The fixed frame is connected to the power supply connector, the slide groove is machined on the housing, the fixed frame is slidably connected to the slide groove, the fixed frame is rotatably connected to the first roller, the trigger rod is provided with a through groove on the side near the first roller, the first roller is slidably connected to the through groove, the trigger rod is connected to the sleeve, and the sleeve is rotatably connected to the main shaft; The roller is mounted on the trigger rod and contacts the inclined surface of the trapezoidal block, which is connected to the pad.

[0012] Preferably, it further includes a first torsion spring; the first torsion spring is sleeved on the main shaft, and the two ends of the first torsion spring are respectively connected to the sleeve and the main shaft, and the main shaft is connected to the inner side of the housing; The first torsion spring can drive the roller to always be in contact with the inclined surface of the trapezoidal block; When the plurality of pressure rods abut against the circuit board and the pad is in its lowest position, the power supply head is plugged into the power supply connector through the first trigger component.

[0013] Preferably, it further includes a buffer assembly, which includes an extension rod, a second spring, and a base plate; the extension rod is connected to the monitoring head, the extension rod is slidably connected to the base plate, the base plate is connected to the connector, the second spring is sleeved on the extension rod, and the two ends of the second spring are respectively connected to the extension rod and the base plate.

[0014] In a second aspect of the invention, a comprehensive testing method for multiple electrical variables of an electric heating furnace circuit board is provided.

[0015] The production method includes the following steps: S1, Place the circuit board to be tested in the positioning groove on the pad, so that the voltage test point and current test point on the circuit board correspond to the holes on the pad respectively. S2, operate the handrail to drive the pressing component to move the pressure plate and multiple pressure rods downward to press the circuit board, while the pad moves downward under the guidance of the limit rod; S3, during the downward movement of the pad, the first trigger component is triggered, so that the power supply connector and the power supply head are connected, thereby supplying power to the circuit board; S4, so that the two monitoring heads contact the voltage test point and the current test point through the holes on the pad respectively, and detect the voltage and current values ​​of the circuit board; S5 transmits the detected voltage and current values ​​to the display screen for display, thereby completing the comprehensive test of multiple electrical variable parameters of the electric heating furnace circuit board.

[0016] Preferably, in step S3, when the pad moves downward, it drives the trapezoidal block to move synchronously, so that the roller rolls along the inclined surface of the trapezoidal block and pushes the trigger rod to rotate around the main shaft. The trigger rod drives the fixed frame to slide in the slide groove through the first roller, thereby driving the power supply connector to complete the insertion with the power supply head.

[0017] One or more technical solutions provided in this application have at least the following technical effects or advantages: This invention provides a comprehensive testing device and method for multiple electrical variables on a circuit board of an electric heating furnace. By setting up a measuring component, a clamping component, and two monitoring heads, the circuit board can be stably clamped and positioned by the clamping component during testing, keeping the circuit board in a fixed state during the test. At the same time, the monitoring heads can stably contact the voltage test point and the current test point, thereby achieving reliable measurement of electrical variables such as voltage and current.

[0018] Meanwhile, through the plug-in structure of the power supply connector and the power supply head, a stable connection of the power supply end can be achieved after the circuit board is pressed, so that the circuit board can perform electrical variable detection in the power-on state, thereby more realistically reflecting the electrical parameters of the circuit board in the actual working state and improving the accuracy of the detection results.

[0019] It should be understood that the description in the Summary of the Invention is not intended to limit the key or essential features of the embodiments of the present invention, nor is it intended to restrict the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0020] The above and other features, advantages, and aspects of the various embodiments of the present invention will become more apparent from the accompanying drawings and the following detailed description. In the drawings, the same or similar reference numerals denote the same or similar elements, wherein: Figure 1 A three-dimensional connection structure schematic diagram of a comprehensive testing device for multiple electrical variables of an electric heating furnace circuit board according to an embodiment of the present invention is shown. Figure 2 An exploded view of a multi-electrical variable integrated testing device for an electric starter furnace circuit board according to an embodiment of the present invention is shown. Figure 3 A three-dimensional connection structure diagram of a multi-electrical variable integrated testing device for an electric fire-starting furnace circuit board according to an embodiment of the present invention is shown from another perspective. Figure 4 A schematic diagram of the planar connection structure of a multi-electrical variable integrated testing device for an electric fire-starting furnace circuit board according to an embodiment of the present invention is shown. Figure 5 A schematic diagram of the connection structure of the first trigger component of the integrated testing device for multiple electrical variables of an electric fire-starting furnace circuit board according to an embodiment of the present invention is shown. Figure 6 A three-dimensional connection structure diagram of the first trigger component of the integrated testing device for multiple electrical variables of an electric starter furnace circuit board according to an embodiment of the present invention is shown. Figure 7 A schematic diagram of the linkage mechanism of the integrated testing equipment for multiple electrical variables of an electric fire-starting furnace circuit board according to an embodiment of the present invention is shown. Figure 8 A schematic diagram of the connection structure of the buffer assembly of the multi-electrical variable integrated testing device for the circuit board of an electric starter furnace according to an embodiment of the present invention is shown. Figure 9 A schematic diagram of the connection structure of the second triggering mechanism of the integrated testing device for multiple electrical variables of an electric fire-starting furnace circuit board according to an embodiment of the present invention is shown. Figure 10 An exploded view of the second triggering mechanism of the integrated testing device for multiple electrical variables of an electric ignition furnace circuit board according to an embodiment of the present invention is shown; Figure 11 A schematic diagram of the connection structure of the monitoring head and buffer assembly of the multi-electrical variable integrated testing device for the circuit board of an electric starter furnace according to an embodiment of the present invention is shown. Figure 12 A flowchart of a multi-variable comprehensive testing method for an electric heating furnace circuit board according to an embodiment of the present invention is shown.

[0021] The attached figures are labeled as follows: 1-Bracket, 2-Pressure assembly, 21-Seat body, 210-Housing shell, 22-First connector, 23-Handrail, 24-Second connector, 25-Connecting rod, 26-Protrusion, 27-Pressure plate, 28-Pressure rod, 29-Pad, 3-Measuring assembly, 31-Circuit board, 32-Power supply connector, 33-Power supply head, 34-Current test point, 35-Voltage test point, 4-Auxiliary assembly, 41-Limit rod, 42-First spring, 5-First trigger assembly, 51-Fixing frame, 510-First torsion spring, 511-Sleeve, 52-Slide groove, 53-First roller, 54-Trigger rod, 55-Main shaft, 56-Roller, 57-Trapezoidal block, 5 8-Second roller, 59-Limiting strip, 6-Linkage mechanism, 61-First rack, 62-First slide rail, 63-Second rack, 64-Second slide rail, 65-First gear, 66-Connecting shaft, 67-Mounting plate, 68-Second gear, 69-Third gear, 7-Second triggering mechanism, 71-Column, 710-Side plate, 711-Second support column, 72-Rotating plate, 73-Support shaft, 74-Second torsion spring, 75-Annular plate, 76-Connector, 77-Electromagnet, 78-Annular slide rail, 79-First support column, 8-Buffer assembly, 81-Base plate, 82-Extension rod, 83-Second spring, 9-Monitoring head, 10-Display screen. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Furthermore, the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0024] like Figures 1 to 11As shown, the integrated testing device for multiple electrical variables of the circuit board of the electric heating furnace includes a measuring component 3, a clamping component 2, and two monitoring heads 9. The measuring component 3 includes a circuit board 31, a power supply connector 32, a power supply head 33, a current test point 34, and a voltage test point 35. The power supply connector 32 is provided on the circuit board 31, serving as the power supply terminal of the circuit board 31 and capable of being plugged into the power supply head 33. The current test point 34 and the voltage test point 35 are located below the circuit board 31, and the two monitoring heads 9 are used to contact the voltage test point 35 and the current test point 34, respectively. The clamping component 2 is used to clamp the circuit board 31 and keep the two monitoring heads 9 in contact with the voltage test point 35 and the current test point 34, respectively. The measuring component 3 also includes a display screen 10, which is integrated on the bracket 1. The display screen 10 is used to display the voltage and current values ​​monitored by the two monitoring heads 9.

[0025] The clamping assembly 2 includes a clamping part, a pressure plate 27, multiple pressure rods 28, a pad 29, a limiting post 211, and a housing 210. The clamping part is connected to the pressure plate 27. Multiple pressure rods 28 are arranged below the pressure plate 27. The pad 29 is provided with a positioning groove for placing the circuit board 31. The bottom ends of the multiple pressure rods 28 can abut against the top of the circuit board 31. The pad 29 is arranged on the housing 210. The pad 29 is provided with two holes with diameters larger than the voltage test point 35 and the current test point 34. The two holes correspond to the voltage test point 35 and the current test point 34, respectively, so that the monitoring head 9 can contact the corresponding test point through the holes. The limiting post 211 is connected to the bracket 1 and the housing 210. The limiting post 211 is also slidably connected to the pressure plate 27 and is used to limit the movement direction of the pressure plate 27.

[0026] The pressing part includes a seat 21, a first connector 22, a second connector 24, a handrail 23, a protrusion 26, and a connecting rod 25. The seat 21 is connected to the bracket 1. The seat 21 is rotatably connected to the first connector 22, the first connector 22 is rotatably connected to the second connector 24, the second connector 24 is rotatably connected to the connecting rod 25, the connecting rod 25 is connected to the pressure plate 27, and the connecting rod 25 is slidably connected to the protrusion 26, which is connected to the seat 21. The handrail 23 is disposed on the first connector 22. When the first connector 22, the second connector 24, and the connecting rod 25 are parallel to each other, the multiple pressure rods 28 on the pressure plate 27 can press the circuit board 31, and the pressure rods 28 cannot move away from the circuit board 31, thus forming a stable pressing state. When the handrail 23 is operated, the first connector 22, the second connector 24, and the connecting rod 25 can be deparallelized, thereby causing the pressure plate 27 to move upward and release the fixed constraint on the circuit board 31.

[0027] It also includes an auxiliary component 4, which comprises multiple sets of limiting rods 41 and first springs 42. The limiting rods 41 are connected to the pad 29 and slidably connected to the housing 210. The first springs 42 are sleeved on the limiting rods 41, and their two ends are connected to the limiting rods 41 and the inner side of the housing 210, respectively. By setting the auxiliary component 4, the pad 29 can move up and down along the direction of the limiting rods 41 when subjected to the force of the pressing component 2, and can be reset under the action of the first springs 42.

[0028] It also includes a first trigger assembly 5, which includes a fixed frame 51, a slide groove 52, a first roller 53, a trigger rod 54, a main shaft 55, a sleeve 511, a trapezoidal block 57, and a roller 56. The fixed frame 51 is connected to the power supply connector 32. The slide groove 52 is machined on the housing 210. The fixed frame 51 is slidably connected to the slide groove 52. The fixed frame 51 is rotatably connected to the first roller 53. The trigger rod 54 has a through groove on the side near the first roller 53. The first roller 53 is slidably connected to the through groove. The trigger rod 54 is connected to the sleeve 511. The sleeve 511 is rotatably connected to the main shaft 55. A first torsion spring 510 is sleeved on the main shaft 55. The roller 56 is set on the trigger rod 54. The roller 56 contacts the inclined surface of the trapezoidal block 57. The trapezoidal block 57 is connected to the pad 29. It also includes a first torsion spring 510; the two ends of the first torsion spring 510 are respectively connected to the sleeve 511 and the main shaft 55, and the main shaft 55 is connected to the inner side of the housing 210; the elastic force of the first torsion spring 510 can drive the roller 56 to always be in contact with the inclined surface of the trapezoidal block 57.

[0029] In actual use, when multiple pressure rods 28 press against the circuit board 31 and the pad 29 is in the lowest position, the trapezoidal block 57 moves downward with the pad 29, and the roller 56 moves along the inclined surface of the trapezoidal block 57, thereby causing the trigger rod 54 to swing. The trigger rod 54 drives the fixing frame 51 to move in the slide groove 52 through the cooperation between the first roller 53 and the fixing frame 51, thereby gradually aligning the power supply connector 32 with the power supply head 33 and finally completing the insertion, so as to realize the power supply to the circuit board 31.

[0030] In actual use, the circuit board 31 is placed in the positioning groove of the pad 29, so that the voltage test point 35 and current test point 34 on the circuit board 31 correspond to the holes on the pad 29. Then, the handle 23 is operated to move the pressure plate 27 downward and press the circuit board 31 tightly through multiple pressure rods 28. At the same time, the pad 29 moves downward under the guidance of the limiting rod 41 and compresses the first spring 42. When the pad 29 descends to the set position, the first trigger component 5 is triggered, so that the power supply connector 32 and the power supply head 33 are connected.

[0031] In this embodiment, the first triggering component 5 further includes a second roller 58 and two limiting bars 59. It also includes a linkage mechanism 6, a second triggering mechanism 7, and a buffer component 8; the second roller 58 is rotatably connected to the trigger rod 54, the two limiting bars 59 are connected to the linkage mechanism 6, and the second roller 58 is disposed inside the two limiting bars 59.

[0032] The linkage mechanism 6 includes a first rack 61, a first slide rail 62, a second rack 63, a second slide rail 64, a first gear 65, a connecting shaft 66, a second gear 68, a mounting plate 67, and a third gear 69. The first rack 61 is connected to two limiting bars 59, and the first rack 61 is slidably connected to the first slide rail 62, which is connected to the inner side of the housing 210. The first rack 61 meshes with the first gear 65, which is connected to the connecting shaft 66. The connecting shaft 66 is rotatably connected to the mounting plate 67, which is connected to the inner side of the housing 210. The connecting shaft 66 is also connected to the second gear 68, which meshes with the second rack 63. The second rack 63 is slidably connected to the second slide rail 64, which is connected inside the housing 210. The second rack 63 meshes with the third gear 69.

[0033] The number of teeth of the first gear 65 is greater than the number of teeth of the second gear 68, and the ratio of the number of teeth of the first gear 65 to the second gear 68 is 2:1, so that when the first rack 61 moves, it drives the first gear 65 to rotate, and drives the second gear 68 to rotate synchronously through the connecting shaft 66, thereby causing the second rack 63 to move under the drive of the second gear 68, and thus making the moving speed of the second rack 63 less than the moving speed of the first rack 61; the first rack 61, the second rack 63, the first gear 65 and the second gear 68 have the same module.

[0034] The purpose of setting up the above-mentioned linkage mechanism 6 is to adjust the rotation speed of the monitoring head 9 during the transmission process, so as to avoid the monitoring head 9 rotating too fast during the process of pressing the circuit board 31, which would affect its positioning and identification of the voltage test point 35 and the current test point 34.

[0035] The second triggering mechanism 7 also includes multiple columns 71, a rotating plate 72, a second torsion spring 74, a support shaft 73, an annular plate 75, a connector 76, an electromagnet 77, an annular slide rail 78 that can be attracted by the electromagnet 77, a side plate 710, multiple first support columns 79, and multiple second support columns 711. The second triggering mechanism 7 consists of two sets. Multiple columns 71 are connected to the third gear 69. The bottom of the third gear 69 is provided with an annular slide groove. Multiple first support columns 79 are slidably connected to the third gear 69. Preferably, there are three first support columns 79. The three first support columns 79 are used to support the rotation of the third gear 69. The first support columns 79 are connected to the side plate 710. The side plate 710 is connected to the inside of the housing 210. At the same time, the side plate 710 is connected to the annular slide rail 78 through multiple second support columns 711.

[0036] The connector 76 has a U-shaped cross-section, with protrusions at both ends of the U-shape. The U-shaped part and the protrusions on the connector 76 are slidably connected to the annular slide rail 78. At the same time, the open side of the connector 76 is used to prevent the second support column 711 from affecting the sliding of the connector 76 on the annular slide rail 78. An electromagnet 77 is provided on the connector 76, and the electromagnet 77 is in contact with the surface of the annular slide rail 78. The connector 76 is connected to the annular plate 75, the annular plate 75 is connected to the support shaft 73, the support shaft 73 is rotatably connected to the rotating plate 72, and the second torsion spring 74 is sleeved on the support shaft 73. The two ends of the second torsion spring 74 are connected to the support shaft 73 and the rotating plate 72, respectively.

[0037] The buffer assembly 8 includes an extension rod 82, a second spring 83, and a base plate 81; wherein, the extension rod 82 is connected to the monitoring head 9, the extension rod 82 is slidably connected to the base plate 81, the base plate 81 is connected to the connector 76, the second spring 83 is sleeved on the extension rod 82, and the two ends of the second spring 83 are respectively connected to the extension rod 82 and the base plate 81.

[0038] The center of the annular slide rail 78 coincides with the theoretical positions of the voltage test point 35 and the current test point 34 on the circuit board 31, while the center of the monitoring head 9 does not completely coincide with the theoretical positions but can rotate around them. Since the positions of the voltage test point 35 and the current test point 34 on the circuit board 31 may deviate somewhat during actual production, the annular rotation scanning of the monitoring head 9 can quickly locate the actual test positions.

[0039] When the corresponding monitoring head 9 detects a valid voltage or current signal, the control unit energizes the electromagnet 77, causing it to adhere to and fix itself to the annular slide rail 78. This locks the position of the connector 76 on the annular slide rail 78, thus fixing the corresponding monitoring head 9 at the detection position. Once one monitoring head 9 has completed its positioning, because the annular slide rail 78 is now fixed in place, the rotating plate 72 cannot continue to drive the annular plate 75 to rotate when the column 71 continues to move. At this point, the second torsion spring 74 undergoes elastic deformation, while the other monitoring head 9 can continue its scanning motion until it also detects the corresponding signal and completes its positioning.

[0040] After both monitoring heads 9 have completed their positioning, the monitored voltage and current values ​​are displayed on the display screen 10, thereby completing the comprehensive test of multiple electrical variable parameters of the electric heating furnace circuit board.

[0041] In practical use, the circuit board 31 to be tested is first placed in the positioning groove on the pad 29, so that the circuit board 31 is kept in a stable position under the limiting effect of the positioning groove, and the voltage test point 35 and current test point 34 on the circuit board 31 are roughly corresponding to the two holes on the pad 29. Since the diameter of the hole is larger than the size of the corresponding test point, a certain adjustment space can be reserved for the subsequent detection movement of the monitoring head 9.

[0042] Subsequently, the operator grips the handle 23 and applies downward force, causing the first connecting piece 22 to rotate around the seat 21, thereby driving the second connecting piece 24 and the connecting rod 25 to move synchronously. Under the action of the connecting rod 25, the pressure plate 27 moves downward, and multiple pressure rods 28 gradually contact the top of the circuit board 31 and apply a clamping force to the circuit board 31, so that the circuit board 31 is stably pressed against the pad 29. During the clamping process, the pad 29 moves downward in the vertical direction under the guidance of multiple limiting rods 41, while compressing the first spring 42 sleeved on the limiting rods 41, thereby forming a buffer effect during the clamping process and ensuring the smoothness of the clamping process.

[0043] When the first connector 22, the second connector 24, and the connecting rod 25 gradually become parallel to each other, the pressure plate 27 enters a stable pressing state. At this time, multiple pressure rods 28 reliably press the circuit board 31, so that the circuit board 31 will not shake or shift during the test, thereby ensuring the stability and accuracy of the test process.

[0044] As the pad 29 moves downward, the trapezoidal block 57 mounted on the pad 29 also moves downward. Because the roller 56 remains in contact with the inclined surface of the trapezoidal block 57 under the elastic force of the first torsion spring 510, when the trapezoidal block 57 moves, the roller 56 rolls along the inclined surface of the trapezoidal block 57, pushing the trigger rod 54 to swing around the main shaft 55. During the swinging process, the trigger rod 54 drives the fixed frame 51 to move along the direction of the slide groove 52 through the sliding fit between the through groove and the first roller 53.

[0045] Since the mounting bracket 51 is connected to the power supply connector 32, as the mounting bracket 51 moves, the power supply connector 32 gradually approaches the power supply head 33 and eventually completes the connection, thereby providing power to the circuit board 31. Through this structural cooperation, the connection between the power supply connector 32 and the power supply head 33 only occurs after the circuit board 31 is pressed and fixed, thus avoiding power connection when the circuit board 31 is not stably fixed, improving the safety and reliability of the equipment.

[0046] After the power connector 32 and the power head 33 are connected, the trigger rod 54 moves the second roller 58 during its movement. The second roller 58 pushes the two limiting strips 59 to move horizontally. Since the two limiting strips 59 are connected to the first rack 61, the movement of the limiting strips 59 can drive the first rack 61 to slide on the first slide rail 62. During the sliding process, the first rack 61 meshes with the first gear 65, thereby driving the first gear 65 to rotate.

[0047] The first gear 65 drives the second gear 68 to rotate synchronously via the connecting shaft 66. The second gear 68 then drives the second rack 63 to move along the second slide rail 64. The movement of the second rack 63 further drives the third gear 69 to rotate. Since the gear ratio between the first gear 65 and the second gear 68 is 2:1, speed adjustment can be achieved during transmission, making the movement speed of the second rack 63 relatively slow. This results in smoother movement of the subsequent monitoring head 9, preventing the monitoring head 9 from moving too fast and affecting the testing accuracy.

[0048] As the third gear 69 rotates, the multiple columns 71 connected to it also rotate. During rotation, the columns 71 periodically actuate the rotating plate 72, causing it to oscillate around the support shaft 73. The oscillation of the rotating plate 72 drives the annular plate 75 connected to it to rotate, and the annular plate 75, in turn, drives the connecting piece 76 to slide circumferentially on the annular slide rail 78 via the connecting piece 76.

[0049] Since the connector 76 is connected to the base plate 81, and the base plate 81 is further connected to the extension rod 82, as the connector 76 slides along the annular slide rail 78, the extension rod 82 drives the monitoring head 9 to perform an annular scanning motion around the theoretical voltage test point 35 or current test point 34. During the scanning process, the second spring 83 provides a certain elastic buffer for the monitoring head 9, enabling the monitoring head 9 to stably contact the test area of ​​the circuit board 31, thereby reducing test errors caused by height differences on the circuit board surface or unstable contact.

[0050] Because the positions of voltage test points 35 and current test points 34 on circuit board 31 may have certain processing deviations during actual production, the monitoring head 9 can gradually contact the actual test point positions through the aforementioned circular scanning motion. When the monitoring head 9 detects a valid voltage or current signal, the control unit controls the electromagnet 77 to be energized, causing the electromagnet 77 to attract to the circular slide rail 78, thereby locking the position of the connector 76 on the circular slide rail 78 and fixing the corresponding monitoring head 9 at the detection position.

[0051] Once one of the monitoring heads 9 has completed its positioning, the annular slide rail 78 has been attracted and fixed by the electromagnet 77. Therefore, the rotating plate 72 cannot continue to drive the annular plate 75 to rotate when the column 71 continues to move. At this time, the second torsion spring 74 undergoes elastic deformation and stores elastic potential energy, while the other monitoring head 9 can continue to perform scanning motion until it also detects the corresponding signal and locks itself through the electromagnet 77.

[0052] Once both monitoring heads 9 have completed their positioning, the voltage and current values ​​detected by them are transmitted to the display screen 10 for display, thus completing the comprehensive test of multiple electrical variable parameters of the electric heating furnace circuit board 31. After the test is completed, the operator reverses the handle 23, causing the first connecting piece 22, the second connecting piece 24, and the connecting rod 25 to release their parallel state. The pad 29 resets under the action of the first spring 42, thereby releasing the pressure of the multiple pressure rods 28 on the circuit board 31, allowing the circuit board 31 to be removed for the next test. The entire process only requires one pressing operation, eliminating the need for the user to repeatedly search for the monitoring positions, thus improving work efficiency during continuous operation.

[0053] In this embodiment, to ensure the stability and reliability of the testing process, the insertion action of the power supply connector 32 and the power supply head 33 is preferably triggered only after the circuit board 31 has been stably clamped. Specifically, when the operating handle 23 causes the pressure plate 27 to move downwards and press the circuit board 31 with multiple pressure rods 28, the pad 29 moves downwards synchronously under the guidance of the limiting rod 41. When the pad 29 descends to the preset travel position, the trapezoidal block 57 set on the pad 29 drives the first trigger component 5 to actuate, thereby driving the power supply connector 32 and the power supply head 33 to complete the insertion. Through the above structural arrangement, the power supply connection occurs when the circuit board 31 is already stably fixed, avoiding power supply before the circuit board 31 is fully positioned, thereby improving the safety and reliability of the testing process.

[0054] Simultaneously, during the clamping process, the two monitoring heads 9 can enter the test area of ​​the circuit board 31 through the holes in the pad 29, and elastically extend towards the circuit board 31 under the action of the buffer component 8, so that the monitoring heads 9 can maintain a stable detection contact tendency with the lower surface of the circuit board 31. Since the positions of the voltage test point 35 and the current test point 34 on the circuit board 31 may have certain processing deviations during actual production, the monitoring heads 9 are not necessarily perfectly aligned with the corresponding test points in the initial state, but the test area is automatically searched and positioned by the subsequent scanning mechanism.

[0055] After power is supplied, the first triggering component 5 continues to drive the second triggering mechanism 7 through the linkage mechanism 6, causing the two monitoring heads 9 to perform circular scanning motions around the theoretical positions of the corresponding test points. During the scanning process, the monitoring heads 9 maintain stable contact with the test area of ​​the circuit board 31 under the elastic pressure provided by the second spring 83. When either monitoring head 9 detects a valid voltage or current signal during the scanning process, the control unit controls the corresponding electromagnet 77 to be energized, causing the connector 76 to form an adsorption fixation with the circular slide rail 78, thereby locking the corresponding monitoring head 9 at the actual test point position. Through the above scanning and locking process, the equipment can automatically adapt to small deviations in the position of the circuit board test points, thereby improving the accuracy of detection and reducing manual alignment operations.

[0056] like Figure 12 As shown, another embodiment of the present invention also provides a comprehensive testing method for multiple electrical variables of an electric heating furnace circuit board, comprising the following steps: S1, the circuit board 31 to be tested is placed in the positioning groove on the pad 29. The positioning groove is used to initially position the circuit board 31 so that the voltage test point 35 and the current test point 34 on the circuit board 31 roughly correspond to the holes on the pad 29. Since the diameter of the hole is larger than the size of the corresponding test point, it can provide some adjustment space for the subsequent testing by the monitoring head 9.

[0057] S2, the operating handle 23 drives the pressing assembly 2 to move, causing the first connecting member, the second connecting member, and the connecting rod to move the pressure plate 27 downwards. This causes the multiple pressure rods 28 to gradually contact the top of the circuit board 31 and apply a pressing force to the circuit board 31, thus stably pressing the circuit board 31 onto the pad 29. Simultaneously, during the pressing process, the pad 29 moves downwards vertically under the guidance of the limiting rod 41, compressing the first spring 42 set on the limiting rod 41. This creates a buffering effect during the pressing process and ensures stability.

[0058] S3, during the downward movement of the pad 29, the first trigger component 5 is triggered, causing the power connector 32 to connect with the power head 33, thereby supplying power to the circuit board 31. Specifically, when the pad 29 moves downward, the trapezoidal block 57 on the pad 29 moves synchronously, ensuring that the roller 56 remains in contact with the inclined surface of the trapezoidal block 57 under the elastic force of the first torsion spring. As the trapezoidal block 57 moves, the roller 56 rolls along the inclined surface of the trapezoidal block 57 and pushes the trigger rod 54 to rotate around the main shaft 55. The trigger rod 54, through the cooperation between the first roller 53 and the fixing frame 51, drives the fixing frame 51 to slide within the slide groove 52, thereby causing the fixing frame 51 to gradually move the power connector 32 towards the power head 33 and finally complete the connection. Through the above structural cooperation, the connection between the power connector 32 and the power head 33 occurs only after the circuit board 31 is pressed and fixed, thereby improving the stability and safety of the testing process.

[0059] S4. After the circuit board 31 is powered on, the two monitoring heads 9 are respectively brought into contact with the voltage test point 35 and the current test point 34 through the holes on the pad 29 to detect the voltage and current values ​​of the circuit board 31. During the detection process, the monitoring heads 9 can maintain stable contact with the corresponding test points, thereby acquiring the voltage and current signals of the circuit board 31 under the power-on state.

[0060] S5 transmits the voltage and current values ​​detected by the two monitoring heads 9 to the display screen 10 for display, thereby completing the comprehensive test of multiple electrical variable parameters of the electric heating furnace circuit board 31.

[0061] By using the above testing method, when testing the circuit board 31, the circuit board 31 can be stably pressed and positioned by the clamping component 2, and the power supply connection can be automatically triggered after the circuit board 31 is fixed. Then, the voltage and current and other electrical variables can be detected by the monitoring head 9, thereby realizing the stable detection of multiple electrical variable parameters of the circuit board 31, improving the detection efficiency and reducing human operation error.

[0062] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A comprehensive testing device for multiple electrical variables of an electric heating furnace circuit board, characterized in that, It includes a measuring component (3), a clamping component (2), and two monitoring heads (9); The measurement component (3) includes a circuit board (31), a power supply connector (32), a current test point (34), a voltage test point (35), and a power supply head (33). The circuit board (31) is provided with a power supply connector (32), which serves as the power supply terminal of the circuit board (31) and can be plugged into the power supply head (33). The current test point (34) and the voltage test point (35) are located below the circuit board (31), and the two monitoring heads (9) are used to contact the voltage test point (35) and the current test point (34) respectively. The clamping assembly (2) is used to clamp the circuit board (31) and keep the two monitoring heads (9) in contact with the voltage test point (35) and the current test point (34) respectively.

2. The comprehensive testing equipment for multiple electrical variables of the circuit board of the electric heating furnace according to claim 1, characterized in that, The measuring component (3) also includes a display screen (10), which is integrated on the bracket (1); The display screen (10) is used to display the voltage and current values ​​monitored by the two monitoring heads (9).

3. The comprehensive testing equipment for multiple electrical variables of the circuit board of the electric heating furnace according to claim 1, characterized in that, The clamping assembly (2) includes a clamping part, a pressure plate (27), multiple pressure rods (28), a pad (29), and a housing (210). The pressing part is connected to the pressure plate (27), and the pressure plate (27) is connected to a plurality of pressure rods (28) below. The pad (29) is provided with a positioning groove and the positioning groove is used to place the circuit board (31). The bottom ends of the plurality of pressure rods (28) abut against the top of the circuit board (31). The pad (29) is disposed on the housing (210); The pad (29) is provided with two holes with diameters larger than the voltage test point (35) and the current test point (34), and the two holes correspond to the voltage test point (35) and the current test point (34) respectively.

4. The comprehensive testing equipment for multiple electrical variables of the circuit board of the electric heating furnace according to claim 3, characterized in that, The pressing part includes a seat (21), a first connector (22), a second connector (24), a handrail (23), a protrusion (26), and a connecting rod (25). The seat (21) is connected to the bracket (1), the seat (21) is rotatably connected to the first connector (22), the first connector (22) is rotatably connected to the second connector (24), the second connector (24) is rotatably connected to the connecting rod (25), the connecting rod (25) is connected to the pressure plate (27), the connecting rod (25) is slidably connected to the protrusion (26), and the protrusion (26) is connected to the seat (21); The handrail (23) is mounted on the first connector (22); Operating the handrail (23) can release the first connector (22), the second connector (24) from the parallel state with the connecting rod (25), thereby releasing the fixed constraint on the circuit board (31).

5. The comprehensive testing equipment for multiple electrical variables of the circuit board of the electric heating furnace according to claim 4, characterized in that, It also includes an auxiliary component (4), which includes multiple sets of limit rods (41) and a first spring (42). The limiting rod (41) is connected to the pad (29), and the limiting rod (41) is slidably connected to the housing (210). The first spring (42) is sleeved on the limiting rod (41), and the two ends of the first spring (42) are respectively connected to the inner side of the limiting rod (41) and the housing (210).

6. The comprehensive testing equipment for multiple electrical variables of the circuit board of the electric heating furnace according to claim 5, characterized in that, It also includes a first triggering component (5), which includes a fixing frame (51), a slide (52), a first roller (53), a trigger rod (54), a main shaft (55), a sleeve (511), a trapezoidal block (57), and a roller (56); The fixing frame (51) is connected to the power supply connector (32), the slide groove (52) is machined on the housing (210), the fixing frame (51) is slidably connected to the slide groove (52), the fixing frame (51) is rotatably connected to the first roller (53), the trigger rod (54) has a through groove on the side near the first roller (53), the first roller (53) is slidably connected to the through groove, the trigger rod (54) is connected to the sleeve (511), and the sleeve (511) is rotatably connected to the main shaft (55); The roller (56) is mounted on the trigger rod (54), and the roller (56) contacts the inclined surface of the trapezoidal block (57), which is connected to the pad (29).

7. The comprehensive testing equipment for multiple electrical variables of the circuit board of the electric heating furnace according to claim 6, characterized in that, It also includes a first torsion spring (510); the first torsion spring (510) is sleeved on the main shaft (55), and the two ends of the first torsion spring (510) are respectively connected to the sleeve (511) and the main shaft (55), and the main shaft (55) is connected to the inner side of the housing (210); The first torsion spring (510) can drive the roller (56) to always be in contact with the inclined surface of the trapezoidal block (57); When the plurality of pressure rods (28) abut against the circuit board (31) and the pad (29) is in the lowest position, the power supply head (33) is inserted into the power supply connector (32) through the first trigger assembly (5).

8. The comprehensive testing equipment for multiple electrical variables of the circuit board of the electric heating furnace according to claim 7, characterized in that, It also includes a buffer assembly (8), which includes an extension rod (82), a second spring (83), and a base plate (81); the extension rod (82) is connected to the monitoring head (9), the extension rod (82) is slidably connected to the base plate (81), the base plate (81) is connected to the connector (76), the second spring (83) is sleeved on the extension rod (82), and the two ends of the second spring (83) are respectively connected to the extension rod (82) and the base plate (81).

9. A comprehensive test method for multiple electrical variables on the circuit board of an electric heating furnace, characterized in that, This method, applied to the multi-electrical variable comprehensive testing equipment for the circuit board of the electric fire-starting furnace according to any one of claims 1 to 8, includes the following steps: S1, place the circuit board (31) to be tested in the positioning groove on the pad (29) so that the voltage test point (35) and current test point (34) on the circuit board (31) correspond to the holes on the pad (29); S2, the operating handle (23) drives the pressing assembly (2) to move, causing the pressure plate (27) to move multiple pressure rods (28) downward and press the circuit board (31), while the pad (29) moves downward under the guidance of the limiting rod (41); S3, during the downward movement of the pad (29), the first trigger component (5) is triggered, so that the power supply connector (32) and the power supply head (33) are connected, thereby supplying power to the circuit board (31); S4, so that the two monitoring heads (9) contact the voltage test point (35) and the current test point (34) respectively through the holes on the pad (29) to detect the voltage and current values ​​of the circuit board (31); S5, the detected voltage and current values ​​are transmitted to the display screen (10) for display, thereby completing the comprehensive test of multiple electrical variable parameters of the electric heating furnace circuit board (31).

10. The method for comprehensive testing of multiple electrical variables on the circuit board of an electric heating furnace according to claim 9, characterized in that: In step S3, when the pad (29) moves downward, it drives the trapezoidal block (57) to move synchronously, so that the roller (56) rolls along the inclined surface of the trapezoidal block (57) and pushes the trigger rod (54) to rotate around the main shaft (55). The trigger rod (54) drives the fixing frame (51) to slide in the slide groove (52) through the first roller (53), thereby driving the power supply connector (32) and the power supply head (33) to complete the plugging.

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