A diode module detection device

Abstract

This invention provides a diode module testing device, including a conveying mechanism for conveying diodes and a testing mechanism for testing the diodes on the conveying mechanism. This invention relates to the field of diode testing technology. By combining the conveying mechanism and the testing mechanism, this invention effectively solves the problems of low efficiency and poor consistency in manual testing in the prior art, realizing continuous and automated testing of diode modules. The adjustment unit within the testing mechanism, through a bidirectional lead screw structure, can precisely adjust the position of its internal measuring pins, thereby flexibly adapting to diodes with different pin lengths and ensuring the universality and reliability of the testing. The connection between the rotation and adjustment unit enables the adjustment unit to perform a second reverse test on the same diode after the first positive and negative electrode measurement is completed, through a precise 180-degree rotation, ensuring that each diode undergoes rigorous double verification.

Description

Technical Field

[0001] This utility model relates to the field of diode testing technology, and in particular to a diode module testing device. Background Technology

[0002] In modern electronics manufacturing, diodes, as fundamental semiconductor devices, are crucial to the reliable operation of the entire electronic system due to the stability and consistency of their product quality. Therefore, rapid and accurate electrical performance testing of diode modules on the production line has become an indispensable process. Traditional testing methods mostly rely on manual operation, with workers using multimeters or similar testing equipment to measure the forward and reverse characteristics of each diode one by one. This manual testing mode is not only inefficient, resulting in a slow production cycle and making it difficult to meet the needs of large-scale automated production, but also prone to visual fatigue and operational errors due to prolonged repetitive labor, making it difficult to guarantee the accuracy and consistency of the test results. Utility Model Content

[0003] The purpose of this invention is to provide a diode module testing device that solves the problem that traditional testing methods rely heavily on manual operation, where workers use multimeters or similar testing equipment to measure the forward and reverse characteristics of each diode. This manual testing mode is not only inefficient, resulting in slow production cycles and making it difficult to meet the needs of large-scale automated production, but also prone to causing visual fatigue and operational errors in workers due to long hours of repetitive labor, making it difficult to guarantee the accuracy and consistency of the test results.

[0004] This utility model provides a diode module testing device, including a conveying mechanism for conveying diodes and a testing mechanism for testing the diodes on the conveying mechanism. The conveying mechanism includes a conveyor and multiple limiting seats. The multiple limiting seats are fixedly installed on the conveyor belt of the conveyor at uniform and equal intervals along the conveying direction of the conveyor. The testing mechanism includes a bracket, a lifting unit, a rotational transposition unit, and an adjustment unit. The bracket is fixedly disposed on both sides of the conveyor, the lifting unit is disposed on the bracket, and the lifting unit and the adjustment unit are connected through the rotational transposition unit.

[0005] Preferably, the lifting unit includes an electric telescopic rod, which is fixedly installed on the top of the support frame, and its driving end extends through the top of the support frame.

[0006] Preferably, the rotary transposition unit includes a support base, a support disc, a slider, a turntable, a rotating shaft, a motor, a first gear, and a second gear. The support base is fixedly connected to the drive end of the electric telescopic rod. The support disc is fixedly disposed within the support base, and an arc-shaped groove is formed on the top of the support disc. The slider is slidably connected to the arc-shaped groove. The turntable is fixedly disposed on the top of the slider. The rotating shaft movably passes through the center of the support disc, and the top end of the rotating shaft is fixedly connected to the bottom of the turntable. The adjustment unit is fixedly connected to the bottom end of the rotating shaft. The support base has an inner cavity, and the motor is fixedly disposed within the inner cavity. The first gear is fixedly connected to the drive end of the motor, and the second gear is fixedly disposed on the rotating shaft, meshing with the first gear.

[0007] Preferably, the adjustment unit includes an adjustment frame, a bidirectional lead screw, two slide rails, two moving blocks, two measuring frames, a test gauge, two measuring needles, and a power cord. The adjustment frame is fixedly mounted on the bottom of the rotating shaft, and has two openings at its bottom. The two ends of the bidirectional lead screw are rotatably connected to the left and right sides of the adjustment frame, respectively. The two slide rails are fixedly mounted on the top of the adjustment frame. The two moving blocks are connected to the reverse threads of the bidirectional lead screw, and the tops of the two moving blocks are slidably connected to the two slide rails. The two moving blocks movably pass through the two openings at the bottom of the adjustment frame. The two measuring frames are fixedly mounted on the bottom of the two moving blocks. The test gauge is fixedly mounted on the bottom of the adjustment frame. The two measuring needles are fixedly connected to the two measuring frames, and the measuring heads are connected to the test gauges via a power cord.

[0008] Preferably, the detection mechanism further includes a clamping unit that performs auxiliary fixing while detecting the diode.

[0009] Preferably, the clamping unit includes a support box, two springs, a sliding plate, and multiple pressing heads. The support box is fixedly disposed on the bottom of the adjustment frame. The top ends of the two springs are fixedly disposed on the top of the support box. The sliding plate is fixedly disposed on the bottom ends of the two springs and is slidably connected to the inner wall of the support box. The multiple pressing heads are fixedly disposed on the bottom of the sliding plate and are movably inserted through the top of the support box.

[0010] Preferably, the diameter of the first gear is smaller than the diameter of the second gear.

[0011] Preferably, the measuring probe is located above the diode pin, and the extension direction of the measuring probe and the extension direction of the diode pin are spatially intersected in a cross shape.

[0012] Preferably, the bidirectional lead screw and the adjusting frame are connected by a bearing, the inner ring of the bearing is interference-fitted with the bidirectional lead screw, and the outer ring of the bearing is fixedly connected to the adjusting frame.

[0013] This invention provides an improved diode module testing device, which, compared with the prior art, has the following improvements and advantages: By combining the conveying mechanism and the testing mechanism, this invention effectively solves the problems of low efficiency and poor consistency in manual testing in the prior art, realizing continuous and automated testing of diode modules. The adjustment unit within the testing mechanism, through a bidirectional lead screw structure, can precisely adjust the position of its internal measuring pin, thus flexibly adapting to diodes with different pin lengths, ensuring the universality and reliability of the testing. The connection between the rotation and adjustment unit allows for a second reverse test of the same diode after the first positive and negative polarity measurement, achieved through a precise 180-degree rotation. The first measurement can initially... The first step is to determine whether the diode has conduction characteristics and to identify its positive and negative polarities. A second measurement, performed by rotating the adjustment unit 180 degrees, is crucial for verifying unidirectional conductivity. Only when the first measurement shows conduction and the second shows cutoff can the diode be fully confirmed to be normal. If both measurements show conduction, the diode is accurately determined to be short-circuited; if both show cutoff, it is determined to be open-circuited and damaged. This dual-detection mechanism not only effectively avoids misjudgments that may occur with a single measurement, ensuring that each diode undergoes rigorous dual verification, but also, through an automated forward and reverse detection process, completes polarity determination and good / bad selection without manual intervention, greatly improving the efficiency and reliability of the detection. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the main structure of the rotary transposition unit of this utility model;

[0017] Figure 3 This is a schematic diagram of the test structure of the movable block, test frame, and measuring probe of this utility model;

[0018] Figure 4This is a schematic diagram of the main structure of the clamping unit of this utility model;

[0019] Figure 5 This is a side view of the conveying mechanism of this utility model.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Conveyor; 2. Limit seat; 3. Lifting unit; 4. Rotary transposition unit; 41. Support seat; 42. Support disc; 43. Slider; 44. Turntable; 45. Rotating shaft; 46. Motor; 47. First gear; 48. Second gear; 5. Adjustment unit; 51. Adjustment frame; 52. Two-way lead screw; 53. Slide rail; 54. Moving block; 55. Measuring frame; 56. Test gauge; 57. Measuring needle; 58. Power cord; 7. Clamping unit; 71. Support box; 72. Spring; 73. Slide plate; 74. Pressing head; 8. Bracket. Detailed Implementation

[0022] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Please see Figure 1-5 This utility model provides a technical solution: a diode module testing device, including a conveying mechanism for conveying diodes and a testing mechanism for testing diodes on the conveying mechanism. The conveying mechanism includes a conveyor 1 and multiple limiting seats 2. The multiple limiting seats 2 are fixedly installed on the conveyor belt of the conveyor 1 at uniform and equal intervals along the conveying direction of the conveyor 1. The testing mechanism includes a bracket 8, a lifting unit 3, a rotational transposition unit 4, and an adjustment unit 5. The bracket 8 is fixedly disposed on both sides of the conveyor 1, the lifting unit 3 is disposed on the bracket 8, and the lifting unit 3 and the adjustment unit 5 are connected through the rotational transposition unit 4.

[0026] Specifically, the lifting unit 3 includes an electric telescopic rod, which is fixedly installed on the top of the bracket 8, and its drive end extends through the top of the bracket 8.

[0027] Specifically, the rotary transposition unit 4 includes a support base 41, a support disc 42, a slider 43, a turntable 44, a rotating shaft 45, a motor 46, a first gear 47, and a second gear 48. The support base 41 is fixedly connected to the drive end of the electric telescopic rod. The support disc 42 is fixedly installed inside the support base 41, and an arc-shaped groove is provided on the top of the support disc 42. The slider 43 is slidably connected to the arc-shaped groove. The turntable 44 is fixedly installed on the top of the slider 43. The turntable 44 can move along the arc-shaped groove on the support disc 42 via the slider 43. The rotating shaft 45 is movably inserted through the center of the supporting disc 42 and the top of the rotating shaft 45 is fixedly connected to the bottom of the disc 44. The adjusting unit 5 is fixedly connected to the bottom of the rotating shaft 45. The rotating shaft 45 can drive the adjusting unit 5 to rotate 180 degrees. The support base 41 has an inner cavity. The motor 46 is fixedly installed in the inner cavity. The first gear 47 is fixedly connected to the drive end of the motor 46. The second gear 48 is fixedly installed on the rotating shaft 45 and meshes with the first gear 47.

[0028] Specifically, the adjustment unit 5 includes an adjustment frame 51, a bidirectional lead screw 52, ​​two slide rails 53, two moving blocks 54, two measuring frames 55, a test gauge 56, two measuring needles 57, and a power cord 58. The adjustment frame 51 is fixedly mounted on the bottom end of the rotating shaft 45, and two openings are provided at the bottom of the adjustment frame 51. The two ends of the bidirectional lead screw 52 are rotatably connected to the left and right sides of the adjustment frame 51, respectively. The two slide rails 53 are fixedly mounted on the top of the adjustment frame 51, and the two moving blocks 54 are respectively connected to the reverse threads of the bidirectional lead screw 52, ​​and the tops of the two moving blocks 54 are respectively... The two slide rails 53 are slidably connected, and the two moving blocks 54 are respectively movably inserted through the two openings at the bottom of the adjustment frame 51. The two measuring frames 55 are respectively fixedly set at the bottom of the two moving blocks 54. The test gauge 56 is fixedly set at the bottom of the adjustment frame 51. The two measuring needles 57 are fixedly connected to the two measuring frames 55, and the measuring head is connected to the test gauge 56 through the power line 58. The measuring frame 55 has an L-shaped structure to ensure that after the adjustment unit 5 is rotated and aligned, the two measuring needles 57 are still in the same detection area. The two measuring needles 57 are respectively used to measure the two pins of the diode.

[0029] Specifically, the testing mechanism also includes a clamping unit 7 that performs auxiliary fixing while testing the diode.

[0030] The clamping unit 7 moves synchronously with the adjustment frame 51, and can assist in fixing the diode while the adjustment unit 5 is detecting.

[0031] Specifically, the clamping unit 7 includes a support box 71, two springs 72, a sliding plate 73, and multiple pressing heads 74. The support box 71 is fixedly installed on the bottom of the adjusting frame 51. The top ends of the two springs 72 are fixedly installed on the top of the support box 71. The sliding plate 73 is fixedly installed on the bottom of the two springs 72 and is slidably connected to the inner wall of the support box 71. The multiple pressing heads 74 are fixedly installed on the bottom of the sliding plate 73 and are movably inserted through the top of the support box 71.

[0032] When the adjusting frame 51 lowers the entire clamping unit 7, multiple pressing heads 74 will first contact the housing of the diode module. As the pressure continues to fall, they will overcome the initial elastic force of the spring 72, causing the slide plate 73 to slide upward. At the same time, the spring 72 will be compressed and stored. When the test is completed or when it needs to be lifted, the spring 72 will release its stored elastic force, pushing the slide plate 73 and the pressing heads 74 to rebound. This elastic clamping method can provide a stable and reliable clamping force, ensuring that the diode will not shake or shift its position during the test, thus guaranteeing the accuracy of the test.

[0033] Specifically, the diameter of the first gear 47 is smaller than the diameter of the second gear 48.

[0034] Specifically, the measuring probe 57 is located above the diode pin, and the extension direction of the measuring probe 57 and the extension direction of the diode pin are spatially intersected in a cross shape.

[0035] The cross-shaped contact configuration increases the contact area between the measuring probe 57 and the diode pin. Compared to simple point or line contact, this cross-contact method provides a more stable and reliable electrical connection, effectively reducing measurement errors caused by poor contact or excessive contact resistance, and ensuring stable transmission of the detection signal and accuracy of the measurement results.

[0036] Specifically, the bidirectional lead screw 52 and the adjusting frame 51 are connected by a bearing. The inner ring of the bearing is interference-fitted with the bidirectional lead screw 52, ​​and the outer ring of the bearing is fixedly connected with the adjusting frame 51.

[0037] Working principle: When testing a diode, the conveyor belt on the conveyor 1 moves at a constant speed. Multiple limit seats 2, which are fixedly installed at equal intervals on the conveyor belt, will sequentially and accurately transport the diode module to be tested to the test station. When the diode reaches the predetermined test position, the conveyor 1 stops running to ensure that the diode module remains stationary during the test.

[0038] Before the formal testing, the adjustment unit 5 will first make a fine adjustment to accommodate diodes with different pin lengths. Specifically, the bidirectional lead screw 52 starts to rotate under the drive of the drive source. Since it is connected to the two moving blocks 54 by threads, and the two moving blocks 54 slide on the slide rail 53 of the adjustment frame 51, the rotation of the bidirectional lead screw 52 will synchronously drive the two moving blocks 54 to move towards or away from each other along the slide rail 53, thereby driving the two measuring pins 57 fixed at their bottom to move closer or further away synchronously until the distance between the tips of the two measuring pins 57 is precisely matched with the pin spacing of the diode module under test.

[0039] Subsequently, the lifting unit 3 in the testing mechanism is activated, the electric telescopic rod extends and drives the support seat 41 at its top to move downward. The support seat 41 drives the entire rotary transposition unit 4 and the adjustment unit 5 to descend together until the measuring needle 57 at the bottom of the adjustment unit 5 can contact the pin of the diode module. During the descent, the clamping unit 7 also moves synchronously, the spring 72 in the support box 71 is compressed, and the slide plate 73 drives the multiple pressing heads 74 at its bottom to move downward. These pressing heads 74 will apply downward pressure to the diode from above, ensuring that the diode module is firmly fixed on the limit seat 2 during the testing process, preventing poor contact or inaccurate test data due to shaking or vibration.

[0040] When the measuring needle 57 contacts the pin, the test meter 56 forms an electrical circuit through the power line 58 and the measuring needle 57, and begins the first test of the diode module. At this time, assuming that the polarity of the measuring needle 57 corresponds to the positive terminal of the diode, the test meter 56 will record the voltage or current value when forward conduction occurs. Next, the lifting cylinder drives the adjusting unit 5 to rise and return to its original position. Subsequently, the motor 46 in the rotational transposition unit 4 starts, driving the first gear 47 to rotate. Since the first gear 47 meshes with the second gear 48, the second gear 48 will drive the rotating shaft 45, the entire adjusting unit 5, and the two measuring needles 57 on it to rotate synchronously by 180 degrees, realizing the reversal of the positive and negative terminals of the measuring needles 57. After the reversal is completed, the lifting cylinder drives the adjusting unit 5 to descend, and the test meter 56... 6. Immediately perform a second test and record the voltage or current value when reverse cutoff is achieved. By comparing the data from these two tests, the system can determine whether the positive and negative polarities of the diode module and its unidirectional conductivity are normal, and whether there are faults such as breakdown or open circuit. After the test is completed, the electric telescopic rod of the lifting unit 3 retracts, driving the entire testing mechanism to reset upward. At the same time, the spring 72 of the clamping unit 7 pushes the slide plate 73 and the pressing head 74 to rebound upward, releasing the fixation of the diode module. At this time, the conveyor 1 starts again, transporting the tested product to the next station. The next diode module to be tested is accurately sent into the testing position by the corresponding limit seat 2. This cycle repeats, realizing automated, efficient, and high-precision continuous testing of the diode module.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A diode module testing device, characterized in that, The device includes a conveying mechanism for conveying diodes and a detection mechanism for detecting diodes on the conveying mechanism. The conveying mechanism includes a conveyor (1) and a plurality of limiting seats (2). The plurality of limiting seats (2) are fixedly installed on the conveyor belt of the conveyor (1) at uniform and equal intervals along the conveying direction of the conveyor (1). The detection mechanism includes a bracket (8), a lifting unit (3), a rotary transposition unit (4), and an adjustment unit (5). The bracket (8) is fixedly disposed on both sides of the conveyor (1). The lifting unit (3) is disposed on the bracket (8). The lifting unit (3) and the adjustment unit (5) are connected by the rotary transposition unit (4).

2. The diode module testing device according to claim 1, characterized in that, The lifting unit (3) includes an electric telescopic rod, which is fixedly installed on the top of the bracket (8), and its driving end extends through the top of the bracket (8).

3. The diode module testing device according to claim 2, characterized in that, The rotary transposition unit (4) includes a support base (41), a support disc (42), a slider (43), a turntable (44), a rotating shaft (45), a motor (46), a first gear (47), and a second gear (48). The support base (41) is fixedly connected to the drive end of the electric telescopic rod. The support disc (42) is fixedly installed inside the support base (41), and an arc-shaped groove is provided on the top of the support disc (42). The slider (43) is slidably connected to the arc-shaped groove. The turntable (44) is fixedly installed on the top of the slider (43). The rotating shaft (45) is movably inserted through the center of the supporting disc (42), and the top of the rotating shaft (45) is fixedly connected to the bottom of the turntable (44). The adjusting unit (5) is fixedly connected to the bottom of the rotating shaft (45). The support base (41) has an inner cavity. The motor (46) is fixedly installed in the inner cavity. The first gear (47) is fixedly connected to the drive end of the motor (46). The second gear (48) is fixedly installed on the rotating shaft (45), and the second gear (48) meshes with the first gear (47).

4. The diode module testing device according to claim 3, characterized in that, The adjustment unit (5) includes an adjustment frame (51), a bidirectional lead screw (52), two slide rails (53), two moving blocks (54), two measuring frames (55), a test gauge (56), two measuring needles (57), and a power cord (58). The adjustment frame (51) is fixedly installed at the bottom of the rotating shaft (45), and the bottom of the adjustment frame (51) has two openings. The two ends of the bidirectional lead screw (52) are rotatably connected to the left and right sides of the adjustment frame (51), respectively. The two slide rails (53) are fixedly installed at the top of the adjustment frame (51), and the two moving blocks (54) are... The two moving blocks (54) are respectively connected to the reverse threads of the two bidirectional lead screw (52), and the tops of the two moving blocks (54) are respectively slidably connected to the two slide rails (53). The two moving blocks (54) are respectively movably passed through the two openings at the bottom of the adjusting frame (51). The two measuring frames (55) are respectively fixedly set at the bottom of the two moving blocks (54). The test gauge (56) is fixedly set at the bottom of the adjusting frame (51). The two measuring needles (57) are fixedly connected to the two measuring frames (55), and the measuring head is connected to the test gauge (56) through a power cord (58).

5. The diode module testing device according to claim 1, characterized in that, The detection mechanism also includes a clamping unit (7) that performs auxiliary fixing while detecting the diode.

6. The diode module testing device according to claim 5, characterized in that, The clamping unit (7) includes a support box (71), two springs (72), a sliding plate (73), and multiple pressing heads (74). The support box (71) is fixedly installed on the bottom of the adjusting frame (51). The top ends of the two springs (72) are fixedly installed on the top of the support box (71). The sliding plate (73) is fixedly installed on the bottom of the two springs (72) and is slidably connected to the inner wall of the support box (71). The multiple pressing heads (74) are fixedly installed on the bottom of the sliding plate (73) and are movably inserted through the top of the support box (71).

7. A diode module testing device according to claim 3, characterized in that, The diameter of the first gear (47) is smaller than the diameter of the second gear (48).

8. A diode module testing device according to claim 4, characterized in that, The measuring needle (57) is located above the diode pin, and the extension direction of the measuring needle (57) and the extension direction of the diode pin are spatially intersected in a cross shape.

9. A diode module testing device according to claim 4, characterized in that, The bidirectional lead screw (52) and the adjusting frame (51) are connected by a bearing. The inner ring of the bearing is interference-fitted with the bidirectional lead screw (52), and the outer ring of the bearing is fixedly connected with the adjusting frame (51).

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