A LED circuit board detection device

Abstract

The present invention relates to the technical field of LED circuit board detection devices, and discloses an LED circuit board detection device. It includes a frame, and also includes: a conveying mechanism, on which an LED circuit board body is equidistantly conveyed, a lifting arm, which is slidably connected to the frame and lifted and lowered in the frame, a screw transmission module, which is installed on the lifting arm and is transmission-connected to the detection arm, a first visual detection component, a lamp bead pressure component, a wind pressure component, and a second visual detection component which are sequentially arranged along the conveying direction of the conveying mechanism, and the first visual detection component performs a pre-imaging detection on the LED circuit board body to be detected. When the present invention is working, the negative pressure vacuum cleaner generates negative pressure suction at a set power, and the spinning shaft rotates at a low speed. When the spinning shaft rotates at a low speed, the soft bristles keep in contact with the LED lamp beads, and the soft bristles are rotated to disturb the LED lamp beads on the LED circuit board body, and the unstable LED lamp beads are changed in position by the disturbance, so that the LED lamp beads with poor solder joints or unstable solder joints are quickly detected.

Description

Technical Field

[0001] The present invention relates to the technical field of LED circuit board detection devices, in particular to an LED circuit board detection device. Background Art

[0002] Most domestic LED lamp circuit board manufacturers still use manual inspection methods, using a multimeter to measure the current or voltage between two points to determine whether a cold solder joint occurs. However, manual inspection is labor-intensive, easily causes eye fatigue, and has a high rate of missed inspections.

[0003] In the prior art, a patent document with publication number CN216670190U discloses an LED lamp circuit board detection device, including a base and a detection mechanism, the base is provided with a mounting groove adapted to the circuit board, the detection mechanism includes a detection board arranged on the base, the circuit board is placed between the base and the detection board, at least two detection heads are provided on the detection board, one end of the detection head is adapted to the circuit part on the circuit board and abuts against the corresponding position to be detected, and the other end is electrically connected to the power parameter display and the power supply, the above device detects the current or voltage parameters between several solders on the circuit board through the detection head to determine whether there is a cold solder joint or detect whether the printed circuit is open, and the detection efficiency is high, but when the above device is detecting, on the one hand, it is not convenient to perform rapid visual detection of cold solder joints or loose LED lamp beads, and on the other hand, it is not convenient to perform power-on and power-off detection of the LED circuit board and to improve the visual detection accuracy of the power-on and power-off detection of the LED circuit board through pre-cleaning. Based on this, the present invention provides an LED circuit board detection device to solve the technical problems raised in the above background technology. Summary of the invention

[0004] The purpose of the present invention is to provide an LED circuit board detection device, which solves the problem that the existing device proposed in the background art is not convenient for rapid visual detection of cold solder joints or loose LED lamp beads during detection, and is not convenient for on-off detection of LED circuit boards and pre-cleaning is performed to improve the visual detection accuracy of on-off detection of LED circuit boards. In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] An LED circuit board detection device includes a frame and further includes:

[0006] A conveying mechanism, on which the LED circuit board bodies are conveyed at equal intervals;

[0007] A lifting arm is slidably connected to the frame and is lifted and lowered in the frame;

[0008] The screw drive module is installed on the lifting arm and is connected to the inspection arm in a transmission manner;

[0009] A first visual detection component, a lamp bead pressure component, a wind pressure component, and a second visual detection component are sequentially arranged along the conveying direction of the conveying mechanism;

[0010] The first visual inspection component performs a pre-imaging inspection on the LED circuit board body to be inspected, the lamp bead pressure component disturbs the LED lamp beads on the LED circuit board body by a rotary sweep and cleans them with negative pressure, the wind pressure component applies wind pressure to the LED lamp beads on the LED circuit board body, and the second visual inspection component performs a second visual inspection on the heated and cleaned LED circuit board body and after the inspection results are output, classifies and transports the inspected LED circuit board bodies according to the inspection output results.

[0011] Preferably, the conveying mechanism includes an endless conveyor belt, two symmetrically arranged transmission rollers rotatably connected between the inner surfaces of a frame, a stepper motor is installed on the side of the frame, the output shaft end of the stepper motor is fixedly connected to a transmission roller, and the two transmission rollers are both transmission-connected to the endless conveyor belt, and a group of equidistantly distributed circuit board placement areas are provided on the endless conveyor belt, and each of the circuit board placement areas is installed with two symmetrically arranged blocks.

[0012] Preferably, the LED circuit board body is provided with two symmetrically arranged detection card holes adapted to the card block, and the LED circuit board body is respectively installed with a circuit module, a power interface and a group of regularly distributed LED lamp beads, the circuit module is respectively electrically connected to the power interface and the LED lamp beads, and the LED circuit board body is also provided with four regularly distributed pressure-bearing parts.

[0013] Preferably, a vertically arranged screw lifting module is fixedly mounted on the frame, the screw lifting module is transmission-connected to a lifting arm, and a PC host is fixedly mounted on the lifting arm.

[0014] Preferably, the first visual detection component includes a first visual detection probe and a counting sensor installed on the detection arm, and the data ends of the first visual detection probe and the counting sensor are both connected to the PC host.

[0015] Preferably, the lamp bead pressure-applying assembly comprises a negative pressure vacuum cleaner and a servo motor fixed on an inspection arm, the inspection arm is rotatably connected to a guide sleeve, the guide sleeve is transmission-connected to a spinning shaft, the output shaft end of the servo motor is transmission-connected to the guide sleeve via a chain belt, a negative pressure rotary seat is fixedly mounted on the bottom end of the spinning shaft, a pressure spring a is sleeved on the spinning shaft and corresponds to the position between the negative pressure rotary seat and the guide sleeve, soft bristles are equidistantly mounted on the bottom surface of the negative pressure rotary seat, a negative pressure cavity is fixedly opened on the negative pressure rotary seat, a group of negative pressure suction holes which are regularly distributed and connected to the negative pressure cavity are opened on the bottom surface of the negative pressure rotary seat, and the negative pressure port of the negative pressure vacuum cleaner is connected to the negative pressure cavity via a negative pressure flexible connecting pipe.

[0016] Preferably, a guide shaft groove slidably connected to the spinning shaft is fixedly provided on the guide shaft sleeve, and the cross-sections of the guide shaft groove and the spinning shaft are both regular polygons.

[0017] Preferably, the wind pressure component comprises a hot air blower fixed on the inspection arm, a filter is installed on the air inlet port of the hot air blower, and a hot air spray hood with an air outlet direction vertically downward is fixedly installed on the air outlet port of the hot air blower.

[0018] Preferably, the second visual detection component includes a vacuum pump and a second visual detection probe fixed on the inspection arm, the data end of the second visual detection probe is connected to the data of the PC host, the PC host is equipped with an image recognition module that cooperates with the first visual detection probe and the second visual detection probe, the vacuum port of the vacuum pump is connected to a vacuum ring tube through a vacuum generating tube, a group of vacuum suction pipes are slidably connected to the inspection arm, the bottom ends of the vacuum suction pipes are fixedly connected to a vacuum suction cup that cooperates with the pressure-bearing part, a pressure spring b is sleeved on the vacuum suction pipe and corresponds to the position between the inspection arm and the vacuum suction cup, the inner wall of the vacuum suction pipe is slidably connected to a pressure-conducting pipe, the top of the pressure-conducting pipe is fixedly connected to the vacuum ring tube, a power cord is installed on the bottom surface of the inspection arm, an intelligent circuit breaker is installed on the power cord, and the bottom end of the power cord is electrically connected to a power plug that cooperates with the power interface.

[0019] Preferably, the second visual inspection component also includes a holder arranged on both sides of the circular conveyor belt, the two holders are fixedly connected to the frame, and the two holders are provided with a material receiving box, the top end of the material receiving box is open, and the position of the material receiving box corresponds to the position of the inspection arm.

[0020] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0021] 1. When the present invention is working, the negative pressure vacuum cleaner generates negative pressure suction at a set power, and the spinning shaft rotates at a low speed. When the spinning shaft rotates at a low speed, the soft bristles keep in contact with the LED lamp beads, and the LED lamp beads on the LED circuit board body are disturbed by the rotation of the soft bristles. Through the disturbance, the unstable LED lamp beads are changed in position, and then the LED lamp beads with cold solder joints or unstable solder joints are quickly detected.

[0022] 2. Through the negative pressure vacuuming structure setting of the negative pressure vacuum cleaner, the LED circuit board body to be inspected can be vacuumed under negative pressure. Through negative pressure vacuuming, the influence of dust on the surface of the LED circuit board body on the visual imaging inspection results can be reduced, thereby improving the visual accuracy of the visual imaging inspection of the LED circuit board body.

[0023] 3. The hot air outlet of the hot air blower is set to act on the LED lamp beads through wind force, so that the loose LED lamp beads can move or show the loose amount under the action of wind force.

[0024] 4. When the second visual inspection probe of the present invention performs visual inspection, a dual-stage inspection is performed. During the first inspection stage, the power plug is not powered on, and the second visual inspection probe performs visual imaging of the LED circuit board body in a non-powered mode. After the second visual inspection probe performs visual imaging of the LED circuit board body, the visual image of the second visual inspection probe is compared with the image of the first visual inspection probe to identify the displaced or loose LED lamp beads. When the number of displaced or loose LED lamp beads exceeds a threshold, the LED circuit board body is judged to be non-conforming, and the non-conforming result is After output, the vacuum suction cup drives the LED circuit board body to fall into the receiving box on the right. During the second detection stage, the power plug is powered on, and the second visual detection probe performs imaging detection on the LED lamp beads in the powered state. Through imaging detection, the number of non-working LED lamp beads can be quickly measured. When the number of non-working LED lamp beads after power-on exceeds the threshold, the LED circuit board body is judged to be a defective product. After the defective result is output, the vacuum suction cup drives the LED circuit board body to fall into the receiving box on the right. Otherwise, the vacuum suction cup drives the LED circuit board body to fall into the receiving box on the left. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of an LED circuit board detection device;

[0026] Figure 2 for Figure 1 A schematic diagram of the structure from another perspective;

[0027] Figure 3 It is a structural diagram of the LED circuit board body;

[0028] Figure 4 It is a structural schematic diagram of the card block and the endless conveyor belt;

[0029] Figure 5 It is a structural diagram of a PC host and a hot air spray hood;

[0030] Figure 6 for Figure 5 A schematic diagram of the local enlarged structure at point A in the middle;

[0031] Figure 7 for Figure 5 A schematic diagram of the local enlarged structure at B in the middle;

[0032] Figure 8 It is a schematic diagram of the structure of the vacuum pump and the counting sensor;

[0033] Fig. 9 for Figure 8 A schematic diagram of the local enlarged structure at C in the middle;

[0034] Fig.10 for Figure 8 Schematic diagram of the local enlarged structure at point D in the middle.

[0035] Among them: 1. Rack; 2. LED circuit board body; 3. Lifting arm; 4. Screw drive module; 5. Inspection arm; 6. Annular conveyor belt; 7. Stepper motor; 8. Card block; 9. Inspection card hole; 10. Circuit module; 11. Power interface; 12. LED lamp beads; 13. Pressure-bearing part; 14. Screw lifting module; 15. PC host; 16. First visual inspection probe; 17. Counting sensor; 18. Negative pressure vacuum cleaner; 19. Servo motor; 20. Guide shaft Sleeve; 21, spinning shaft; 22, negative pressure spinning seat; 23, pressure spring a; 24, soft bristles; 25, negative pressure suction hole; 26, negative pressure flexible connecting pipe; 27, vacuum pump; 28, second visual inspection probe; 29, vacuum ring tube; 30, vacuum suction pipe; 31, vacuum suction cup; 32, pressure spring b; 33, intelligent circuit breaker; 34, power plug; 35, card seat; 36, material receiving box; 37, hot air blower; 38, hot air spray hood; 39, pressure pipe; 40, power cord. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figure 1-10 , a LED circuit board detection device, including a frame 1, and also including:

[0038] A conveying mechanism, on which an LED circuit board body 2 is evenly conveyed;

[0039] The conveying mechanism includes an endless conveyor belt 6, two transmission rollers symmetrically arranged and rotatably connected between the inner surfaces of the frame 1, a stepping motor 7 is installed on the side of the frame 1, the output shaft end of the stepping motor 7 is fixedly connected to a transmission roller, and the two transmission rollers are both transmission-connected to the endless conveyor belt 6, and a group of equally spaced circuit board placement areas are arranged on the endless conveyor belt 6, and two symmetrically arranged card blocks 8 are installed on each circuit board placement area;

[0040] When working, the conveying mechanism can be used in conjunction with an external mechanical arm, and the external mechanical arm is used to place the LED circuit board bodies 2 to be tested successively on the circuit board placement area on the circular conveyor belt 6, and then used for continuous feeding of D;

[0041] When the conveying mechanism is working, the annular conveyor belt 6 works step by step within a set period interval, and within the step interval period of the annular conveyor belt 6, the detection device performs detection operations on the LED circuit board body 2;

[0042] The LED circuit board body 2 is provided with two symmetrically arranged detection card holes 9 adapted to the card block 8, and the LED circuit board body 2 is respectively installed with a circuit module 10, a power interface 11 and a group of regularly distributed LED lamp beads 12, the circuit module 10 is respectively electrically connected to the power interface 11 and the LED lamp beads 12, and the LED circuit board body 2 is also provided with four regularly distributed pressure-bearing parts 13;

[0043] A lifting arm 3 is slidably connected to the frame 1 and is lifted and lowered in the frame 1;

[0044] A vertically arranged screw lifting module 14 is fixedly mounted on the frame 1, the screw lifting module 14 is transmission-connected with the lifting arm 3, and a PC host 15 is fixedly mounted on the lifting arm 3;

[0045] The screw lifting module 14 includes a lifting motor and a lifting screw driven by the lifting motor, and the lifting screw is transmission-connected to the lifting arm 3;

[0046] The screw drive module 4 is installed on the lifting arm 3 and is in driving connection with the inspection arm 5;

[0047] The screw drive module 4 includes a drive motor and a drive screw driven by the drive motor;

[0048] The transmission screw is in transmission connection with the inspection arm 5;

[0049] A first visual detection component, a lamp bead pressure component, a wind pressure component, and a second visual detection component are sequentially arranged along the conveying direction of the conveying mechanism;

[0050] The first visual inspection component performs a pre-imaging inspection on the LED circuit board body 2 to be inspected, the lamp bead pressure component disturbs the LED lamp beads 12 on the LED circuit board body 2 by a rotary sweep and cleans them with negative pressure, the wind pressure component applies wind pressure to the LED lamp beads 12 on the LED circuit board body 2, and the second visual inspection component performs a second visual inspection on the heated and cleaned LED circuit board body 2 and after the inspection result is output, the inspected LED circuit board body 2 is classified and transported according to the inspection output result.

[0051] The first visual inspection component includes a first visual inspection probe 16 and a counting sensor 17 installed on the inspection arm 5 . The data ends of the first visual inspection probe 16 and the counting sensor 17 are both data-connected to the PC host 15 .

[0052] When working, the first visual inspection probe 16 is used to perform visual imaging on the LED circuit board body 2. When the LED circuit board body 2 is visually imaged at the first visual inspection probe 16, the LED lamp beads 12 on the LED circuit board body 2 are in a non-powered state;

[0053] Through the visual imaging of the first visual inspection probe 16, the original position of each lamp bead on the LED circuit board body 2 is detected;

[0054] The counting sensor 17 is used to count the number of detections of the detection device;

[0055] The lamp bead pressure assembly includes a negative pressure vacuum cleaner 18 and a servo motor 19 fixed on the inspection arm 5. The inspection arm 5 is rotatably connected to a guide sleeve 20, and the guide sleeve 20 is transmission-connected to a spinning shaft 21.

[0056] The guide shaft sleeve 20 is fixedly provided with a guide shaft groove which is slidably connected to the spinning shaft 21, and the cross sections of the guide shaft groove and the spinning shaft 21 are both regular polygons;

[0057] The guide shaft groove and the regular polygonal cross section of the spinning shaft 21 are arranged so that when the spinning shaft 21 moves, the guide shaft sleeve 20 can continuously drive the spinning shaft 21;

[0058] The output shaft end of the servo motor 19 is connected to the guide sleeve 20 through a chain belt, and a negative pressure rotary seat 22 is fixedly installed at the bottom end of the spinning shaft 21. A pressure spring a23 is sleeved on the spinning shaft 21 and corresponds to the position between the negative pressure rotary seat 22 and the guide sleeve 20. Soft bristles 24 are equidistantly installed on the bottom surface of the negative pressure rotary seat 22. A negative pressure cavity is fixedly opened on the negative pressure rotary seat 22, and a group of regularly distributed negative pressure suction holes 25 connected to the negative pressure cavity are opened on the bottom surface of the negative pressure rotary seat 22. The negative pressure port of the negative pressure vacuum cleaner 18 is connected to the negative pressure cavity through a negative pressure soft connecting pipe 26.

[0059] When working, the negative pressure vacuum cleaner 18 generates negative pressure suction at a set power, and the spinning shaft 21 rotates at a low speed. When the spinning shaft 21 rotates at a low speed, the soft bristles 24 keep in contact with the LED lamp beads 12, and the LED lamp beads 12 on the LED circuit board body 2 are disturbed by the rotation of the soft bristles 24. Through the disturbance, the unstable LED lamp beads 12 are changed in position, and then the LED lamp beads 12 with unstable solder joints are quickly detected;

[0060] By setting the negative pressure dust suction structure of the negative pressure dust collector 18, the LED circuit board body 2 to be inspected can be vacuumed under negative pressure, so as to reduce the influence of dust on the surface of the LED circuit board body 2 on the visual imaging inspection result, thereby improving the visual accuracy of the visual imaging inspection of the LED circuit board body 2;

[0061] The wind pressure component comprises a hot air blower 37 fixed on the inspection arm 5, a filter is installed at the air inlet port of the hot air blower 37, and a hot air spray hood 38 with the air outlet direction vertically downward is fixedly installed at the air outlet port of the hot air blower 37.

[0062] When working, the hot air blower 37 blows hot air at a constant temperature, and the air outlet temperature of the hot air blower 37 is not higher than the desoldering temperature;

[0063] The hot air outlet of the hot air blower 37 is used to act on the LED lamp beads 12 through wind force, so that the loose LED lamp beads 12 can move or show the looseness under the action of wind force;

[0064] The second visual inspection component includes a vacuum pump 27 and a second visual inspection probe 28 fixed on the inspection arm 5. The data end of the second visual inspection probe 28 is data-connected to the PC host 15. The PC host 15 is equipped with an image recognition module that cooperates with the first visual inspection probe 16 and the second visual inspection probe 28. The vacuum port of the vacuum pump 27 is connected to a vacuum ring tube 29 through a vacuum generating tube. A group of vacuum suction pipes 30 are slidably connected to the inspection arm 5. The bottom end of the vacuum suction pipe 30 is fixedly connected to a vacuum suction cup 31 that cooperates with the pressure-bearing part 13. A pressure spring b32 is sleeved on the vacuum suction pipe 30 and corresponds to the position between the inspection arm 5 and the vacuum suction cup 31. The inner wall of the vacuum suction pipe 30 is slidably connected to a pressure pipe 39. The top of the pressure pipe 39 is fixedly connected to the vacuum ring tube 29. A power cord 40 is installed on the bottom surface of the inspection arm 5. An intelligent circuit breaker 33 is installed on the power cord 40. The bottom end of the power cord 40 is electrically connected to a power plug 34 that cooperates with the power interface 11.

[0065] When the LED circuit board body 2 moves to the position directly below the second visual inspection probe 28, the power plug 34 is inserted into the power interface 11;

[0066] Subsequently, the second visual inspection probe 28 performs visual inspection;

[0067] During the first detection stage, the power plug 34 is not powered, and the second visual detection probe 28 performs visual imaging of the LED circuit board body 2 in a non-powered mode. After the second visual detection probe 28 performs visual imaging of the LED circuit board body 2;

[0068] The visual image of the second visual inspection probe 28 is compared with the image of the first visual inspection probe 16 to identify the displaced or loose LED lamp beads 12. When the number of displaced or loose LED lamp beads 12 exceeds the threshold, the LED circuit board body 2 is judged to be a non-conforming product. After the non-conforming result is output, the vacuum suction cup 31 drives the LED circuit board body 2 to fall into the receiving box 36 on the right side.

[0069] During the second detection stage, the power plug 34 is powered on, and the second visual detection probe 28 performs imaging detection on the LED lamp beads 12 in the powered state. Through imaging detection, the number of non-working LED lamp beads 12 can be quickly measured. When the number of non-working LED lamp beads 12 after power-on exceeds the threshold, the LED circuit board body 2 is judged to be a defective product. After the defective product result is output, the vacuum suction cup 31 drives the LED circuit board body 2 to fall into the material receiving box 36 on the right. Conversely, the vacuum suction cup 31 drives the LED circuit board body 2 to fall into the material receiving box 36 on the left.

[0070] The second visual inspection component also includes a holder 35 arranged on both sides of the endless conveyor belt 6. The two holders 35 are fixedly connected to the frame 1. The two holders 35 are provided with a material receiving box 36. The top end of the material receiving box 36 is open. The position of the material receiving box 36 corresponds to the position of the inspection arm 5.

[0071] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations may be made to the embodiments without departing from the principles and spirit thereof, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An LED circuit board detection device, comprising a frame (1) and a conveying mechanism, wherein the conveying mechanism conveys an LED circuit board body at equal intervals, and the LED circuit board body (2) is further provided with four regularly distributed pressure-bearing parts (13), characterized in that: Also includes: A lifting arm (3) is slidably connected to the frame (1) and is lifted and lowered in the frame (1); A screw drive module (4) is installed on the lifting arm (3) and is drivingly connected to the inspection arm (5); A first visual detection component, a lamp bead pressure component, a wind pressure component, and a second visual detection component are sequentially arranged along the conveying direction of the conveying mechanism; The first visual inspection component performs a pre-imaging inspection on the LED circuit board body (2) to be inspected, the lamp bead pressure component disturbs the LED lamp beads (12) on the LED circuit board body (2) by a rotary sweep and cleans them with negative pressure, the wind pressure component applies wind pressure to the LED lamp beads (12) on the LED circuit board body (2), and the second visual inspection component performs a secondary visual inspection on the LED circuit board body (2) after heating and cleaning, and after the inspection result is output, the inspected LED circuit board body (2) is classified and transported according to the inspection output result; The first visual detection component comprises a first visual detection probe (16) and a counting sensor (17) mounted on the detection arm (5); The second visual inspection component comprises a vacuum pump (27) and a second visual inspection probe (28) fixed on the inspection arm (5); the data end of the second visual inspection probe (28) is connected to the PC host (15); the PC host (15) is built with an image recognition module that cooperates with the first visual inspection probe (16) and the second visual inspection probe (28); the vacuum port of the vacuum pump (27) is connected to a vacuum ring tube (29) through a vacuum generating tube; and a group of vacuum suction pipes (30) are slidably connected to the inspection arm (5). The bottom end of the vacuum suction pipe (30) is fixedly connected to a vacuum suction cup (31) matched with the pressure-bearing part (13); a pressure spring b (32) is sleeved on the vacuum suction pipe (30) and corresponds to the position between the inspection arm (5) and the vacuum suction cup (31); the inner wall of the vacuum suction pipe (30) is slidably connected to a pressure-conducting pipe (39); the top end of the pressure-conducting pipe (39) is fixedly connected to the vacuum ring pipe (29); a power cord (40) is installed on the bottom surface of the inspection arm (5); and an intelligent circuit breaker (33) is installed on the power cord (40).

2. The LED circuit board detection device according to claim 1, characterized in that: The conveying mechanism comprises an annular conveyor belt (6), two symmetrically arranged transmission rollers rotatably connected to the inner surface of a frame (1), a stepping motor (7) is installed on the side of the frame (1), the output shaft end of the stepping motor (7) is fixedly connected to a transmission roller, and the two transmission rollers are both transmission-connected to the annular conveyor belt (6), and a group of equidistantly distributed circuit board placement areas are arranged on the annular conveyor belt (6), and each of the circuit board placement areas is installed with two symmetrically arranged card blocks (8).

3. The LED circuit board detection device according to claim 2, characterized in that: The LED circuit board body (2) is provided with two symmetrically arranged detection card holes (9) adapted to the card block (8); a circuit module (10), a power interface (11) and a group of regularly distributed LED lamp beads (12) are respectively installed on the LED circuit board body (2); the circuit module (10) is respectively electrically connected to the power interface (11) and the LED lamp beads (12).

4. The LED circuit board detection device according to claim 3, characterized in that: A vertically arranged screw lifting module (14) is fixedly mounted on the frame (1), the screw lifting module (14) is transmission-connected to the lifting arm (3), a PC host (15) is fixedly mounted on the lifting arm (3), and the data ends of the first visual detection probe (16) and the counting sensor (17) are both data-connected to the PC host (15).

5. The LED circuit board detection device according to claim 4, characterized in that: The lamp bead pressure assembly comprises a negative pressure vacuum cleaner (18) and a servo motor (19) fixed on the inspection arm (5); the inspection arm (5) is rotatably connected to a guide sleeve (20); the guide sleeve (20) is transmission-connected to a spinning shaft (21); the output shaft end of the servo motor (19) is transmission-connected to the guide sleeve (20) via a chain belt; a negative pressure rotary seat (22) is fixedly installed at the bottom end of the spinning shaft (21); and the spinning shaft (21) is provided with a positive pressure rotary seat (22). A pressure spring a (23) is sleeved at a position corresponding to the negative pressure rotary seat (22) and the guide shaft sleeve (20); soft bristles (24) are equidistantly installed on the bottom surface of the negative pressure rotary seat (22); a negative pressure cavity is fixedly provided on the negative pressure rotary seat (22); a group of regularly distributed negative pressure suction holes (25) connected to the negative pressure cavity are provided on the bottom surface of the negative pressure rotary seat (22); and the negative pressure port of the negative pressure vacuum cleaner (18) is connected to the negative pressure cavity via a negative pressure flexible connecting pipe (26).

6. The LED circuit board detection device according to claim 5, characterized in that: The guide shaft sleeve (20) is fixedly provided with a guide shaft groove which is slidably connected to the spinning shaft (21); the cross sections of the guide shaft groove and the spinning shaft (21) are both regular polygons.

7. The LED circuit board detection device according to claim 6, characterized in that: The wind pressure component comprises a hot air blower (37) fixed on the inspection arm (5), the air inlet port of the hot air blower (37) is equipped with a filter, and the air outlet port of the hot air blower (37) is fixedly equipped with a hot air spray hood (38) with the air outlet direction vertically downward.

8. The LED circuit board detection device according to claim 1, characterized in that: The bottom end of the power cord (40) is electrically connected to a power plug (34) that matches the power interface (11).

9. The LED circuit board detection device according to claim 1, characterized in that: The second visual inspection component also includes a holder (35) arranged on both sides of the endless conveyor belt (6), the two holders (35) are fixedly connected to the frame (1), and the two holders (35) are provided with a material receiving box (36), the top end of the material receiving box (36) is open, and the position of the material receiving box (36) corresponds to the position of the inspection arm (5).

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