Detection device for light emitting diodes

Abstract

The present invention discloses a detection device for light emitting diodes, including a detection platform, a light emitting diode, and a carrier plate rotatably connected to the top of the detection platform for carrying the light emitting diode, the carrier plate is provided with a positioning component for fixing the light emitting diode, the positioning component includes a positioning cylinder arranged on the periphery of the top of the carrier plate for plugging the light emitting diode, the top periphery of the carrier plate is provided with a through hole corresponding to the positioning cylinder and for inserting a metal bracket of the light emitting diode, and the inner side of the side wall of the carrier plate is movably connected with a movable block corresponding to the through hole. The detection device for light emitting diodes uses a rotating carrier plate for carrying the light emitting diode, and a positioning component for positioning the light emitting diode is arranged on the periphery of the carrier plate, and can automatically realize the stable positioning of the light emitting diode when the carrier plate rotates in conjunction with an arc-shaped driving plate, thereby increasing convenience and improving efficiency.

Description

Technical Field

[0001] The invention relates to the field of light emitting diode testing, and in particular to a detection device for light emitting diodes. Background Art

[0002] Light-emitting diode, or LED for short, is a commonly used light-emitting device that emits light by releasing energy through the recombination of electrons and holes. The light-emitting diode is composed of a PN junction and has unidirectional conductivity. When a forward voltage is applied to the light-emitting diode, the holes injected from the P region into the N region and the electrons injected from the N region into the P region recombine with the electrons in the N region and the holes in the P region within a few microns near the PN junction, respectively, to produce spontaneously radiated fluorescence, so it can be used to make a light-emitting device. It is often used as an indicator light in a circuit, or used to form text or digital displays.

[0003] The chip of the light-emitting diode is generally covered with a transparent resin, and two metal brackets extend out of the transparent resin for wiring. In order to ensure the qualification of the light-emitting diode after production, it is generally necessary to test the conduction performance of the light-emitting diode after production. The conventional method is generally to fix the light-emitting diode first, and then connect the two metal brackets of the light-emitting diode to the positive and negative poles of the test power supply respectively, and judge whether the product is qualified by whether it emits light and its brightness. However, in the prior art, the positioning of the light-emitting diode is generally cumbersome during detection. Since the light-emitting diodes are small and numerous, positioning each diode greatly affects the work efficiency, and the positioning and power-on detection need to be performed separately, which not only has a complex structure, but also has poor detection efficiency and convenience.

[0004] Therefore, it is necessary to propose a detection device for light emitting diodes to solve the above problems. Summary of the invention

[0005] The main purpose of the present invention is to provide a detection device for light emitting diodes, which can effectively solve the problems in the background technology.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A detection device for light-emitting diodes comprises a detection platform, a light-emitting diode and a carrier plate rotatably connected to the top of the detection platform for carrying the light-emitting diode, the carrier plate is provided with a positioning component for fixing the light-emitting diode, the positioning component comprises a positioning cylinder arranged on the periphery of the top of the carrier plate for plugging in the light-emitting diode, the top periphery of the carrier plate is provided with a through hole corresponding to the positioning cylinder and for inserting a metal bracket of the light-emitting diode, a movable block corresponding to the through hole is movably connected to the inner side of the side wall of the carrier plate, one end of the movable block is provided with a conductive claw for clamping the metal between the light-emitting diodes, one end of the detection platform is provided with an arc driving plate corresponding to the movable block, the two ends of the arc driving plate are inclined surfaces or arc surfaces, and one end of the movable block protrudes from the side wall of the carrier plate.

[0008] Preferably, the bottom periphery of the carrier plate is provided with a first annular groove corresponding to the through hole;

[0009] The side wall of the carrier plate is provided with through slots corresponding to the through holes one by one, a cylinder is fixedly provided inside the through slot, and the movable block is movably connected to the inner side of the cylinder.

[0010] Preferably, a pair of blind holes are provided at one end of the movable block close to the first annular groove, one end of the conductive claw is movably connected to the inner side of the blind hole, and a second spring is provided between one end of the conductive claw and the inner wall of the blind hole.

[0011] Preferably, a boss is provided on the side wall of the inner cavity of the cylinder, a guide rod is provided on the side of the boss away from the first annular groove, a flange movably sleeved with the guide rod is provided on the side wall of the movable block, and a first spring for resetting the movable block is sleeved on the part of the guide rod located between the flange and the boss, and one end of the movable block protrudes from the side wall of the carrier plate in the reset state of the first spring.

[0012] Preferably, a detection frame is provided at one end of the detection table, a detection component is provided on the detection frame, the detection component includes a detection power supply arranged at one end of the top of the detection frame, a floating frame corresponding to the periphery of the carrier is provided below the detection frame, a pair of elastic measuring needles corresponding to the conductive claws are provided on one side of the floating frame, and the elastic measuring needles are connected to the detection power supply through wires.

[0013] Preferably, the elastic measuring needle includes a guide tube arranged on one side of the floating frame, and the inner side of the lower end of the guide tube is movably guided and connected to a detection probe for interfering with the conductive claw, and a fourth spring is arranged between the top of the detection probe and the inner wall of the guide tube, and the top ends of the two detection probes are respectively connected to the positive and negative poles of the detection power supply through wires.

[0014] Preferably, a first detection through hole corresponding to the movable block is provided on the periphery of the carrier, and the first detection through hole is located on the outside of the perforation, and the first detection through holes are grouped in pairs, and the first detection through holes correspond to the detection probes, a second detection through hole corresponding to the first detection through hole is provided on the top of the cylinder, and a third detection through hole connected to the blind hole and corresponding to the second detection through hole is provided on the top of the movable block, and the third detection through hole and the second detection through hole are staggered in the second spring reset state.

[0015] Preferably, it also includes a driving component for driving the floating frame to intermittently lift and the carrier to intermittently rotate, the driving component includes a gear ring arranged on the periphery of the bottom of the carrier, one end of the top of the detection platform is rotatably connected to a first incomplete gear intermittently meshing with the gear ring, one end of the top of the carrier is also provided with a gear intermittently meshing with the first incomplete gear, and is configured so that the first incomplete gear meshes with the gear after being completely separated from the gear ring, a reduction motor for driving the first incomplete gear to rotate is provided at the bottom of the detection platform, an end face gear is fixedly provided on the top of the gear, one side of the detection frame is rotatably connected to a bevel gear meshing with the end face gear, a second incomplete gear is fixedly provided on one side of the bevel gear, and a rack intermittently meshing with the second incomplete gear is provided on one side of the floating frame.

[0016] Preferably, a guide column is provided at the upper end of the floating frame for cooperating with the movable guide of the detection frame, the cross-section of the guide column is "T"-shaped, and the upper end of the guide column extends to the top of the detection frame, and the part extending to the top of the detection frame is sleeved with a third spring, and the second incomplete gear is not engaged with the rack in the initial state of the third spring, so that after the second incomplete gear is engaged and disengaged from the rack, the floating frame can rise and reset under the reverse force of the third spring.

[0017] Preferably, the outer end of the movable block is rotatably connected to a roller protruding from the end of the movable block.

[0018] Compared with the prior art, the present invention provides a detection device for light emitting diodes, which has the following features:

[0019] Beneficial effects:

[0020] The detection device for light emitting diodes uses a rotating carrier plate to carry the light emitting diodes, and a positioning component for positioning the light emitting diodes is arranged on the periphery of the carrier plate. The arc-shaped driving plate can automatically realize the stable positioning of the light emitting diodes when the carrier plate rotates, thereby increasing convenience and improving efficiency.

[0021] Based on the above beneficial effects, intermittent rotation detection of the carrier can be achieved by setting up a detection component in cooperation with a drive component. When the carrier stops, the detection component moves down to perform a conduction test on the light-emitting diode. After the test, the detection component automatically rises and resets, and the carrier continues to rotate, sharing a driving source, with a simple and compact structure, high precision, and improved efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 It is a structural schematic diagram of another perspective of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the carrier plate of the present invention;

[0025] Figure 4 It is a schematic diagram of the structure of the present invention when the carrier plate and the gear ring are disassembled;

[0026] Figure 5 The present invention Figure 4 Another perspective structural diagram of;

[0027] Figure 6 is a schematic diagram of the structure of the carrier plate after the positioning assembly of the present invention is removed;

[0028] Figure 7 It is a structural schematic diagram of the present invention in which the movable block and the cylinder are disassembled;

[0029] Figure 8 It is a structural schematic diagram of the cylinder of the present invention;

[0030] Fig. 9 It is a structural schematic diagram of the testing platform after the carrier plate of the present invention is removed;

[0031] Fig.10 It is a schematic diagram of the overall structure of the detection component and the drive component of the present invention;

[0032] Fig.11 The present invention Fig.10 Another perspective structural diagram of;

[0033] Fig.12 It is a schematic diagram of the structure of the elastic measuring needle of the present invention in a disassembled state.

[0034] In the figure: 1, test table; 2, carrier plate; 3, test frame; 4, light emitting diode; 5, reduction motor; 6, positioning cylinder; 7, cylinder body; 8, gear ring; 9, fixed seat; 10, first annular groove; 11, second annular groove; 12, ball bearing; 13, through groove; 14, perforation; 15, first test through hole; 16, movable block; 17, conductive claw; 18, blind hole; 19, second test through hole; 20, flange; 21, guide rod; 2 2. First spring; 23. Second spring; 24. Roller; 25. Third detection through hole; 26. Boss; 27. Arc-shaped drive plate; 28. Detection power supply; 29. ​​First incomplete gear; 30. Gear; 31. Face gear; 32. Bevel gear; 33. Floating frame; 34. Detection probe; 35. Guide column; 36. Third spring; 37. Second incomplete gear; 38. Rack; 39. Guide cylinder; 40. Fourth spring. DETAILED DESCRIPTION

[0035] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0036] Example

[0037] like Figure 1-Figure 12 As shown, in this embodiment, the detection device for light-emitting diodes includes a detection platform 1, a light-emitting diode 4, and a carrier 2 rotatably connected to the top of the detection platform 1 for carrying the light-emitting diode 4. The carrier 2 is rotatably connected to the top of the detection platform 1 through a shaft, and a fixing seat 9 is fixedly installed on the top of the detection platform 1. The inner periphery of the bottom of the carrier 2 is provided with a second annular groove 11 corresponding to the fixing seat 9. The carrier 2 is rotatably connected to the upper end of the fixing seat 9 through the second annular groove 11. The fixing seat 9 is convenient for stably supporting the carrier 2 and allowing a gap between the carrier 2 and the detection platform 1. Balls 12 are evenly and movably provided on the top of the fixing seat 9 to facilitate the rotation of the carrier 2 and reduce friction. A positioning component for fixing the light-emitting diode 4 is provided on the carrier 2;

[0038] As a preferred embodiment, the positioning assembly includes a positioning cylinder 6 arranged on the outer periphery of the top of the carrier 2 for plugging in the light-emitting diode 4, a through-hole 14 corresponding to the positioning cylinder 6 and for inserting a metal bracket of the light-emitting diode 4 is arranged on the outer periphery of the top of the carrier 2, a first annular groove 10 corresponding to the through-hole 14 is arranged on the outer periphery of the bottom of the carrier 2, and a movable block 16 corresponding to the through-hole 14 is movably connected to the inner side of the side wall of the carrier 2. Specifically, the side wall of the carrier 2 is provided with a through groove 13 corresponding to the through hole 14 one by one, a cylinder 7 is fixedly provided on the inner side of the through groove 13, and the movable block 16 is movably connected to the inner side of the cylinder 7, and one end of the movable block 16 is provided with a conductive claw 17 for clamping the metal between the light-emitting diode 4, and one end of the detection table 1 is provided with an arc-shaped driving plate 27 corresponding to the movable block 16, and both ends of the arc-shaped driving plate 27 are inclined surfaces or arc-shaped surfaces, and one end of the movable block 16 protrudes from the side wall of the carrier 2.

[0039] Furthermore, in order to facilitate the floating of the conductive claw 17 and avoid clamping damage, a pair of blind holes 18 are provided at one end of the movable block 16 close to the first annular groove 10, one end of the conductive claw 17 is movably connected to the inner side of the blind hole 18, and a second spring 23 is provided between one end of the conductive claw 17 and the inner wall of the blind hole 18.

[0040] In order to facilitate the resetting of the movable block 16, a boss 26 is provided on the side wall of the inner cavity of the cylinder 7, and a guide rod 21 is provided on the side of the boss 26 away from the first annular groove 10, and a flange 20 movably sleeved with the guide rod 21 is provided on the side wall of the movable block 16, and a first spring 22 for resetting the movable block 16 is sleeved on the part of the guide rod 21 located between the flange 20 and the boss 26, and one end of the movable block 16 protrudes from the side wall of the carrier plate 2 in the resetting state of the first spring 22, and in order to reduce the friction between the movable block 16 and the arc-shaped driving plate 27, a roller 24 protruding from the end of the movable block 16 is rotatably connected to the outer end of the movable block 16.

[0041] A detection frame 3 is provided at one end of the detection table 1, and a detection component is provided on the detection frame 3. The detection component includes a detection power supply 28 arranged at one end of the top of the detection frame 3, and a floating frame 33 corresponding to the periphery of the carrier 2 is provided below the detection frame 3. A pair of elastic probes corresponding to the conductive claws 17 are provided on one side of the floating frame 3, and the elastic probes are connected to the detection power supply 28 through wires.

[0042] As a preferred embodiment, the elastic measuring needle includes a guide cylinder 39 arranged on one side of the floating frame 33, and the inner side of the lower end of the guide cylinder 39 is movably guided and connected to a detection probe 34 for interfering with the conductive claw 17, and a fourth spring 40 is arranged between the top of the detection probe 34 and the inner wall of the guide cylinder 39, and the top ends of the two detection probes 34 are respectively connected to the positive and negative poles of the detection power supply 28 through wires.

[0043] Furthermore, in order to facilitate the contact between the detection probe 34 and the conductive claw 17, a first detection through hole 15 corresponding to the movable block 16 is provided on the periphery of the carrier 2, and the first detection through holes 15 are located on the outside of the through hole 14, and the first detection through holes 15 are grouped in pairs, and the first detection through holes 15 correspond to the detection probe 34, a second detection through hole 19 corresponding to the first detection through hole 15 is provided on the top of the cylinder 7, a third detection through hole 25 connected to the blind hole 18 and corresponding to the second detection through hole 19 is provided on the top of the movable block 16, and the third detection through hole 25 and the second detection through hole 19 are staggered when the second spring 23 is in the reset state.

[0044] It also includes a driving component for driving the floating frame 33 to intermittently rise and fall and the carrier 2 to intermittently rotate, the driving component includes a gear ring 8 arranged on the periphery of the bottom of the carrier 2, one end of the top of the detection platform 1 is rotatably connected to a first incomplete gear 29 that intermittently meshes with the gear ring 8, one end of the top of the carrier 2 is also provided with a gear 30 that intermittently meshes with the first incomplete gear 29, and is configured so that the first incomplete gear 29 meshes with the gear 30 after being completely separated from the gear ring 8, a reduction motor 5 for driving the first incomplete gear 29 to rotate is provided at the bottom of the detection platform 1, an end face gear 31 is fixedly provided on the top of the gear 30, one side of the detection frame 3 is rotatably connected to a bevel gear 32 that meshes with the end face gear 31, one side of the bevel gear 32 is fixedly provided with a second incomplete gear 37, and one side of the floating frame 33 is provided with a rack 38 that intermittently meshes with the second incomplete gear 37.

[0045] Furthermore, a guide column 35 is provided at the upper end of the floating frame 33 for movable guiding cooperation with the detection frame 3, the cross-section of the guide column 35 is "T"-shaped, and the upper end of the guide column 35 extends to the top of the detection frame 3, and the part extending to the top of the detection frame 3 is sleeved with a third spring 36, and the second incomplete gear 37 is not engaged with the rack 38 in the initial state of the third spring 36, so that after the second incomplete gear 37 is engaged and disengaged with the rack 38, the floating frame 33 can rise and reset under the reverse force of the third spring 36.

[0046] Furthermore, when in use, the light-emitting diodes 4 can be placed one by one in the positioning cylinders 6 on the outer periphery of the top of the carrier 2 by manual or mechanical hand or vibration plate loading methods, and the two metals at the bottom of the light-emitting diodes 4 extend to the first annular groove 10 through the through hole 14, and then the reduction motor 5 is controlled to drive the first incomplete gear 29 to rotate, and the first incomplete gear 29 intermittently meshes with the gear ring 8 at the bottom of the carrier 2, and then the gear ring 8 drives the carrier 2 to rotate during the meshing, and each time the first incomplete gear 29 meshes with the gear ring 8, the carrier 2 rotates by the position of a positioning cylinder 6, and one of the positioning cylinders 6 corresponds to the detection component, and the first detection through hole 15 on the outer side of the corresponding positioning cylinder 6 corresponds to the detection probe 34, and in the positioning Before the cylinder 6 corresponds to the detection component, the roller 24 at one end of the movable block 16 corresponding to the positioning cylinder 6 will contact the side wall of the arc driving plate 27. Since the two ends of the arc driving plate 27 are inclined surfaces or arc surfaces, the roller 24 is gradually compressed as the carrier 2 rotates and drives the movable block 16 to move and compress the first spring 22, and then the movable block 16 drives the conductive claw 17 to move, and the conductive claw 17 presses against the metal bracket at the bottom of the light-emitting diode 4, and a second spring 23 is provided between the conductive claw 17 and the blind hole 18, and the conductive claw 17 can float to avoid rigid clamping damage. After being fixed firmly, the third detection through hole 25 coincides with the second detection through hole 19, and then the positioning cylinder 6 gradually corresponds to the detection component, and the first incomplete gear 2 9 is separated from the toothed ring 8, and then meshes with the gear 30. In order to prevent the carrier 2 from being unstable after the first incomplete gear 29 is separated from the toothed ring 8, a conventional ratchet and pawl mechanism can be set to limit the toothed ring 8. The gear 30 drives the end gear 31 to rotate, and the end gear 31 drives the second incomplete gear 37 to rotate through the bevel gear 32. The second incomplete gear 37 is then meshed with the rack 38, and then the floating frame 33 is driven by the rack 38 to move downward, and then the detection probe 34 passes downward through the first detection through hole 15, the second detection through hole 19, and the third detection through hole 25 into the blind hole 18 and respectively contacts the two conductive claws 17, and then the conductive claws 17, the two metal brackets of the light-emitting diode 4, and the detection probe 34 and the detection power supply 28 are connected. A loop is formed. If the light-emitting diode 4 emits light normally, it is normal. If it emits light abnormally, it is an unqualified product. When the floating frame 33 moves down, the third spring 36 contracts. After the detection probe 34 contacts the conductive claw 17, the fourth spring 40 can be compressed to float. When the first incomplete gear 29 is separated from the gear 30, the second incomplete gear 37 is separated from the rack 38, and then the third spring 36 is reset, the floating frame 33 rises, the fourth spring 40 is also reset, and the detection probe 34 rises and resets. Then the first incomplete gear 29 continues to mesh with the gear ring 8. This cycle can realize automatic clamping and detection of the light-emitting diode 4. The detection and clamping share the same driving source, the structure has good linkage and high precision, which greatly increases convenience and improves work efficiency.

[0047] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A detection device for a light emitting diode, characterized in that: The invention comprises a testing platform (1), a light-emitting diode (4), and a carrier (2) rotatably connected to the top of the testing platform (1) for carrying the light-emitting diode (4); the carrier (2) is provided with a positioning assembly for fixing the light-emitting diode (4); the positioning assembly comprises a positioning cylinder (6) arranged on the periphery of the top of the carrier (2) for plugging the light-emitting diode (4); the periphery of the top of the carrier (2) is provided with a through hole (14) corresponding to the positioning cylinder (6) and for inserting a metal bracket of the light-emitting diode (4); a movable block (16) corresponding to the through hole (14) is movably connected to the inner side of the side wall of the carrier (2); a conductive claw (17) for clamping the metal of the light-emitting diode (4) is provided at one end of the movable block (16); an arc-shaped driving plate (27) corresponding to the movable block (16) is provided at one end of the testing platform (1); both ends of the arc-shaped driving plate (27) are inclined surfaces or arc-shaped surfaces; one end of the movable block (16) protrudes from the side wall of the carrier (2); The bottom periphery of the carrier plate (2) is provided with a first annular groove (10) corresponding to the through hole (14), the side wall of the carrier plate (2) is provided with through grooves (13) corresponding one to one to the through hole (14), a cylinder (7) is fixedly provided inside the through groove (13), and the movable block (16) is movably connected to the inner side of the cylinder (7); A boss (26) is provided on the side wall of the inner cavity of the cylinder (7); a guide rod (21) is provided on the side of the boss (26) away from the first annular groove (10); a flange (20) movably sleeved with the guide rod (21) is provided on the side wall of the movable block (16); a first spring (22) for resetting the movable block (16) is sleeved on a portion of the guide rod (21) located between the flange (20) and the boss (26); and one end of the movable block (16) protrudes from the side wall of the carrier plate (2) when the first spring (22) is in the resetting state; The outer end of the movable block (16) is rotatably connected to a roller (24) protruding from the end of the movable block (16); The rotating roller (24) of the carrier (2) is gradually compressed and drives the movable block (16) to move and compress the first spring (22), and then the movable block (16) drives the conductive claw (17) to move, and the conductive claw (17) presses against the metal bracket at the bottom of the light-emitting diode (4) to clamp the metal of the light-emitting diode (4).

2. The detection device for light emitting diodes according to claim 1, characterized in that: A pair of blind holes (18) are provided at one end of the movable block (16) close to the first annular groove (10), one end of the conductive claw (17) is movably connected to the inner side of the blind hole (18), and a second spring (23) is provided between one end of the conductive claw (17) and the inner wall of the blind hole (18).

3. The detection device for light emitting diodes according to claim 1, characterized in that: A detection frame (3) is provided at one end of the detection platform (1), and a detection component is provided on the detection frame (3), wherein the detection component comprises a detection power supply (28) provided at one end of the top of the detection frame (3), and a floating frame (33) corresponding to the periphery of the carrier (2) is provided below the detection frame (3), and a pair of elastic probes corresponding to the conductive claws (17) are provided on one side of the floating frame (33), and the elastic probes are connected to the detection power supply (28) via wires.

4. The detection device for light emitting diodes according to claim 3, characterized in that: The elastic probe comprises a guide tube (39) arranged on one side of the floating frame (33); a detection probe (34) for contacting and cooperating with the conductive claw (17) is movably guided and connected to the inner side of the lower end of the guide tube (39); a fourth spring (40) is arranged between the top of the detection probe (34) and the inner wall of the guide tube (39); and the top ends of the two detection probes (34) are respectively connected to the positive and negative electrodes of the detection power supply (28) through wires.

5. The detection device for light emitting diodes according to claim 4, characterized in that: The outer periphery of the carrier (2) is provided with a first detection through hole (15) corresponding to the movable block (16), and the first detection through holes (15) are located outside the through hole (14), and the first detection through holes (15) are arranged in groups of two, and the first detection through holes (15) correspond to the detection probe (34), the top of the cylinder (7) is provided with a second detection through hole (19) corresponding to the first detection through hole (15), the top of the movable block (16) is provided with a third detection through hole (25) connected to the blind hole (18) and corresponding to the second detection through hole (19), and the third detection through hole (25) and the second detection through hole (19) are staggered when the second spring (23) is in a reset state.

6. The detection device for light emitting diodes according to claim 5, characterized in that: It also includes a driving assembly for driving the floating frame (33) to intermittently lift and the carrier (2) to intermittently rotate, the driving assembly including a toothed ring (8) disposed on the periphery of the bottom of the carrier (2), one end of the top of the detection platform (1) is rotatably connected to a first incomplete gear (29) that intermittently meshes with the toothed ring (8), one end of the top of the carrier (2) is also provided with a gear (30) that intermittently meshes with the first incomplete gear (29), and the first incomplete gear (29) is configured such that after the first incomplete gear (29) is completely separated from the toothed ring (8), it is retracted from the gear (30) ), a reduction motor (5) for driving the first incomplete gear (29) to rotate is arranged at the bottom of the detection platform (1), an end face gear (31) is fixedly arranged on the top of the gear (30), one side of the detection frame (3) is rotatably connected to a bevel gear (32) meshing with the end face gear (31), one side of the bevel gear (32) is fixedly arranged with a second incomplete gear (37), and one side of the floating frame (33) is provided with a rack (38) intermittently meshing with the second incomplete gear (37).

7. The detection device for light emitting diodes according to claim 6, characterized in that: The upper end of the floating frame (33) is provided with a guide column (35) which cooperates with the active guide of the detection frame (3); the cross section of the guide column (35) is T-shaped, and the upper end of the guide column (35) extends to the upper part of the detection frame (3); the portion extending to the upper part of the detection frame (3) is sleeved with a third spring (36); and in the initial state of the third spring (36), the second incomplete gear (37) and the rack (38) are not meshed, so that after the second incomplete gear (37) and the rack (38) are meshed and separated, the floating frame (33) can rise and reset under the reverse action force of the third spring (36).

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