Detection device for LED display screen

Abstract

The invention belongs to the technical field of LED display screen detection, and particularly relates to a detection device for an LED display screen, which comprises a base box, the base box is fixedly connected with a protection box through a connecting plate, the top of the inner wall of the protection box is fixedly connected with an industrial camera device, the base box is symmetrically and fixedly connected with two side plates, and the two side plates are fixedly connected with the base box. A conveying belt is fixedly connected to the side plates. Automatic cooperation of positioning and electrifying of the LED display device is achieved through the self-positioning electrifying part, the motor drives the reciprocating lead screw through the speed reducer to drive the movable sleeve to move, the movable sleeve drives the electrifying connector to be in butt joint with the LED display device through the elastic limiting part, and after butt joint, the movable sleeve drives the tooth cylinder and the pressing plate to rotate through the transmission part; the condition that detection is not comprehensive enough due to the fact that the pressing plate shields the LED display device is avoided, it is ensured that the industrial camera device can conduct all-directional scanning, detection comprehensiveness is guaranteed, labor intensity is reduced, detection efficiency is improved, and manual operation errors are avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of LED display screen detection, and specifically relates to a detection device for an LED display screen. BACKGROUND

[0002] An LED screen is a new type of imaging electronic device made by arranging light-emitting diodes in sequence. Due to its high brightness, wide viewing angle, long service life and other characteristics, it is being widely used in outdoor advertising screens and other products. In the processing flow of the LED display screen, the detection device is the core equipment to guarantee product quality. After the LED display screen module completes the processes of die bonding, wire bonding and glue filling, it will be transported to the detection station to start the detection process through the detection device.

[0003] A detection device for an LED display screen is disclosed in Chinese Patent Publication No. CN221594805U, which includes an LED display screen mounting seat and a horizontal moving device. A vertical moving device is slidably connected below the horizontal moving device. The above device can use an external air pump to connect a spray head to spray high-pressure air flow on the LED display screen to blow off the dust attached to the surface of the LED display screen. However, the display screen cannot be automatically powered on, and the detection circuit needs to be manually connected to the display screen connector. During the connection process, the connector pin may be damaged due to improper force control, reducing the efficiency of continuous detection.

[0004] A display screen aging detection device is disclosed in Chinese Patent Publication No. CN219532959U, which includes a detection table. The rear end face of the detection table is fixedly connected with a power supply line. A display screen is placed on the top of the detection table. The above device moves the industrial camera through the electric sliding rail to perform aging detection, which is beneficial to improve the placement efficiency of the display screen, is convenient to adapt to different display screens with brackets or protrusions at the rear end, effectively improves the detection efficiency, and helps to reduce the working intensity of the user. However, the power-on operation relies on manual plugging of the power supply line or connector, increasing the manual operation intensity, and it is difficult to meet the efficient and accurate detection needs in large-scale production. The existing LED display screen detection device needs to rely on manual plugging of the connector during use, which not only leads to a complicated detection process and low efficiency, but also causes problems such as positioning deviation and poor power-on contact due to manual operation errors, thereby affecting the defect detection accuracy and making it difficult to meet the efficient and accurate detection needs in large-scale production.

[0005] In view of the above technical defects, a solution is proposed. SUMMARY

[0006] To solve the above problems, the present application provides the following technical solutions: The utility model provides a detection device for LED display screen, including base box, the base box is fixedly connected with the protection box through the connecting plate, the top of inside wall of protection box is fixedly connected with industrial camera device, the base box is fixedly connected with two side plates symmetrically, the side plate is fixedly connected with the conveyer belt, the top of base box is provided with LED display device, still includes: Self-positioning power supply part is arranged in the inside of base box, is used for quick power detection to LED display device, The self-positioning power supply part includes the reducer fixedly connected in the inside of base box, the input end of reducer is fixedly connected with motor, the output end of reducer is fixedly connected with reciprocating screw rod, the reciprocating screw rod is movably connected with mobile sleeve, the top of mobile sleeve is provided with power connection, the top of mobile sleeve is provided with the elastic stopper connected with power connection, the side plate is hinged with the gear cylinder through the shaft rod, the gear cylinder is fixedly connected with the pressing plate, the mobile sleeve is provided with the transmission part connected with gear cylinder, Self-rotating protection part is arranged in the inside of base box, is used for the automatic protection of power connection.

[0007] Further, the elastic stopper includes a trapezoidal plate fixedly connected to the mobile sleeve, a square sleeve slidably coupled to the trapezoidal plate, the square sleeve fixedly connected to the bottom of the power connection, a spring fixedly connected to the top of the trapezoidal plate, and the top of the spring fixedly connected to the inside of the square sleeve. The inside of the base box is fixedly connected with a concave plate, one side of the square sleeve and one side of the mobile sleeve are both fixedly connected with a square plate, and the square plate is slidably connected to the inside of the concave plate.

[0008] Further, the transmission part includes two fixed sleeves fixedly connected to the mobile sleeve, a sliding rod one fixedly connected to the inside of the fixed sleeve, two symmetrical rotating rods one movably connected to the inside of the base box through a bearing seat, an inclined slot one formed in the rotating rod one, and the sliding rod one slidably connected to the inside of the inclined slot one. The top end of the rotating rod one penetrates to the outside of the base box and is fixedly connected with an eccentric wheel, the eccentric wheel is sleeved with a gear sleeve, one end of the gear sleeve penetrates to the outside of the side plate, and the gear sleeve is engaged with the gear cylinder.

[0009] Further, a limiting rod is fixedly connected to the inside of the concave plate, the bottom end of the limiting rod is fixedly connected to the inside of the base box, the square plate is slidably coupled to the limiting rod, four L-shaped rods are fixedly connected to the base box symmetrically, and the gear sleeve is sleeved on the L-shaped rod.

[0010] Further, the anti-rotation guard comprises a guard plate fixedly connected to the concave plate, the inside of the base box is movably connected with a rotating rod two through a bearing seat, a sliding sleeve is sleeved on the rotating rod two, the sliding sleeve is fixedly connected to the inside of the fixed sleeve, a sliding rod two is fixedly connected to the inside of the sliding sleeve, an inclined groove two is formed in the rotating rod two, the sliding rod two is slidably connected in the inclined groove two, a protective sleeve is fixedly connected to the top of the rotating rod two through a connecting plate, the protective sleeve is sleeved on the current-carrying connector, and one side of the protective sleeve is in contact with the guard plate.

[0011] Further, the inside of the base box is fixedly connected with a supporting plate, and the top end of the supporting plate extends to the top of the fixed sleeve through the fixed sleeve and is fixedly connected with a sleeve plate.

[0012] Further, the inside of the base box is provided with a circulating ash cleaning assembly, the circulating ash cleaning assembly comprises a flow guide cylinder, the flow guide cylinder is fixedly connected to the inside of the base box through a connecting plate, and the right end of the motor output shaft penetrates into the inside of the flow guide cylinder and is fixedly connected with a fan blade. One side of the flow guide cylinder is communicated with an exhaust hose, an L-shaped sleeve is fixedly connected to the protective box, one end of the exhaust hose penetrates into the top of the L-shaped sleeve, the bottom of the L-shaped sleeve is communicated with a corrugated hose, the bottom of the corrugated hose is communicated with a three-way pipe, one end of the three-way pipe penetrates into the inside of the flow guide cylinder, and the inside of the three-way pipe is provided with a filtering assembly.

[0013] Further, the filtering assembly comprises a sealing cover screwed on the three-way pipe, a filter cylinder is fixedly connected to the inside of the sealing cover, the top end of the filter cylinder extends into the inside of the three-way pipe and is fixedly connected with a sealing ring, and the surface of the sealing ring is in contact with the inner wall of the three-way pipe.

[0014] Further, the bottom of the pressing plate is fixedly connected with a rubber pad, the rubber pad is located on the top of the LED display device, and one side of the sleeve plate is fixedly connected to the three-way pipe.

[0015] Further, two mounting sleeves are fixedly connected to the fixed sleeve in a symmetrical manner, and a guide plate is fixedly mounted in the inside of the mounting sleeve through bolts.

[0016] Compared with the prior art, the present application has the following advantages: The application realizes the automation cooperation of LED display device positioning and power supply by self-positioning power supply part, the motor drives the reciprocating screw rod through the reducer to drive the moving sleeve to move, the moving sleeve drives the power supply connector to butt joint with the LED display device through the elastic limiting part, after butt joint, the moving sleeve drives the gear cylinder and the pressing plate to rotate through the transmission part, avoiding the pressing plate to cause the LED display device to be blocked, leading to the situation that the detection is not comprehensive, ensuring that the industrial camera device can scan comprehensively, ensuring the detection comprehensiveness, without manual auxiliary positioning and plug-in connector, reducing the labor intensity, improving the detection efficiency, avoiding the manual operation error, adapting to the efficient and accurate detection demand in large-scale production.

[0017] Further, the power supply connector lacks effective dustproof in the non-detection state, dust and debris and impurities are easy to fall into the inside of the power supply connector, leading to the situation that the contact is not good during subsequent butt joint, affecting the power supply stability and detection accuracy; and through the design of the protection sleeve, the rotating rod two and the sliding sleeve in the self-rotating protection part, in the non-detection state, the protection sleeve is sleeved on the power supply connector and forms effective protection with the protection plate, blocking the impurities from invading, in the detection state, the fixed sleeve drives the sliding sleeve and the sliding rod two to slide in the inclined groove two, the sliding rod two drives the rotating rod two to rotate, and then drives the protection sleeve to automatically rotate to avoid, without affecting the accurate butt joint of the power supply connector and the LED display device, ensuring the dustproof effect, without damaging the original automation process, improving the service life of the power supply connector.

[0018] Further, in the production process of the LED display screen, the interface at the bottom of the LED display device is easy to be contaminated by dust, welding slag and debris and impurities, affecting the power supply stability, and may scratch the power supply connector during butt joint, and through the design of the guide cylinder, the fan blade and the exhaust hose in the circulating dust removal assembly, the fan blade generates airflow driven by the motor, and the airflow is accurately guided through the guide cylinder, the exhaust hose, the L-shaped sleeve and the corrugated hose, blowing dust off the interface at the bottom of the LED display device, at the same time, the circulating channel is formed by the three-way pipe, and the blowing impurities are sucked into the recycling by cooperating with the filtering assembly, efficiently removing the residual impurities at the interface, reducing dust diffusion, and keeping the detection environment clean. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to facilitate the understanding of those skilled in the art, the application will be further described below with reference to the drawings; Figure 1 is a structural schematic diagram of the application; Figure 2 is a cross-sectional view of the protection box in the application; Figure 3 is a structural schematic diagram of the pressing plate in the application; Figure 4 is a cross-sectional view of the protection plate in the application; Figure 5 is a structural schematic diagram of the reducer in the application; Figure 6 It is a cross section schematic view of the guide cylinder in the application; Figure 7 It is a structure schematic view of the rotating rod two in the application; Figure 8 It is a cross section schematic view of the tee pipe in the application; Figure 9 It is a structure schematic view of the rotating rod one in the application.

[0020] The figure mark: 1, base box; 2, protection box; 3, industrial camera device; 4, side plate; 5, conveying belt; 6, LED display device; 7, self-positioning power supply part; 71, speed reducer; 72, motor; 73, reciprocating screw rod; 74, moving sleeve; 75, power supply connector; 76, elastic limiting part; 761, trapezoidal plate; 762, square sleeve; 763, spring; 764, concave plate; 765, square plate; 77, gear cylinder; 78, pressing plate; 79, transmission part; 791, fixed sleeve; 792, sliding rod one; 793, rotating rod one; 794, inclined groove one; 795, eccentric wheel; 796, gear sleeve; 8, self-rotating protection part; 81, protection plate; 82, rotating rod two; 83, sliding sleeve; 84, sliding rod two; 85, inclined groove two; 86, protection sleeve; 9, limiting rod; 10, L-shaped rod; 11, support plate; 12, sleeve plate; 13, circulating ash removal assembly; 131, guide cylinder; 132, fan blade; 133, exhaust hose; 134, L-shaped sleeve; 135, corrugated hose; 136, tee pipe; 137, filter assembly; 1371, sealing cover; 1372, filter cylinder; 1373, sealing ring; 14, rubber pad; 15, mounting sleeve; 16, guide plate. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the application will be apparently and completely described below with the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all the other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the application.

[0022] As Figures 1 to 4 shown, the application provides a detection device for an LED display screen, which comprises a base box 1, the base box 1 is fixedly connected with a protection box 2 through a connecting plate, an industrial camera device 3 is fixedly connected to the top of the inner wall of the protection box 2, two side plates 4 are fixedly connected to the base box 1 in symmetry, a conveying belt 5 is fixedly connected to the side plate 4, an LED display device 6 is arranged on the top of the base box 1, and the detection device further comprises: a self-positioning power supply part 7 arranged in the interior of the base box 1, which is used for rapidly powering and detecting the LED display device 6; The self-positioning power supply part 7 comprises a reducer 71 fixedly connected inside the base box 1, an input end of the reducer 71 is fixedly connected with a motor 72, an output end of the reducer 71 is fixedly connected with a reciprocating screw rod 73, the reciprocating screw rod 73 is movably connected with a moving sleeve 74, the top of the moving sleeve 74 is provided with a power supply connector 75, the top of the moving sleeve 74 is provided with an elastic limiting part 76 connected with the power supply connector 75, a gear cylinder 77 is hingedly connected on the side plate 4 through a shaft, a pressing plate 78 is fixedly connected on the gear cylinder 77, the moving sleeve 74 is provided with a transmission part 79 connected with the gear cylinder 77; The self-rotating protection part 8 is arranged inside the base box 1 and is used for automatically protecting the power supply connector 75; Specifically, one side of the power supply connector 75 is electrically connected with a power supply through a wire; the reducer 71 is a worm gear reducer, the left side of the motor 72 shell is fixedly installed on the reducer 71 shell through bolts, the motor 72 is a double-shaft motor, the left end of the motor 72 output shaft is fixedly connected with the worm end of the reducer 71; the reciprocating screw rod 73 is provided with a reciprocating screw groove, the inside of the moving sleeve 74 is fixedly connected with a connecting rod, a connecting sleeve is sleeved on the connecting rod, and the connecting sleeve is slidingly connected in the reciprocating screw groove; in use, the motor 72 drives the reciprocating screw rod 73 to rotate through the reducer 71, the reciprocating screw rod 73 can drive the connecting sleeve to move through the reciprocating screw groove, and the connecting sleeve drives the moving sleeve 74 to move upward or downward through the connecting rod.

[0023] As shown in Figures 2 to 4 The elastic limiting part 76 comprises a trapezoidal plate 761 fixedly connected on the moving sleeve 74, a square sleeve 762 is slidingly sleeved on the trapezoidal plate 761, the top of the square sleeve 762 is fixedly connected with the bottom of the power supply connector 75, the top of the trapezoidal plate 761 is fixedly connected with a spring 763, and the top end of the spring 763 is fixedly connected in the inside of the square sleeve 762. The inside of the base box 1 is fixedly connected with a concave plate 764, one side of the square sleeve 762 and one side of the moving sleeve 74 are both fixedly connected with a square plate 765, and the square plate 765 is slidingly connected in the inside of the concave plate 764.

[0024] Specifically, the spring 763 is a stainless steel spring; in use, the moving sleeve 74 drives the trapezoidal plate 761 to move upward, the trapezoidal plate 761 drives the square sleeve 762 and the square plate 765 to move upward through the spring 763, the pressing plate 78 can block the LED display device 6, the square sleeve 762 drives the power supply connector 75 to stably insert into the interface of the LED display device 6, after the insertion is completed, the square plate 765 will be in contact with the inner wall of the concave plate 764, at this time, the square sleeve 762 cannot move upward, the trapezoidal plate 761 continuously compresses the spring 763 upward, the moving sleeve 74 drives the gear cylinder 77 and the pressing plate 78 through the transmission part 79, so that the pressing plate 78 rotates to be opened, and the industrial camera 3 can conveniently and comprehensively shoot and detect the LED display device 6.

[0025] As Figure 1 and Figure 9 shown, the transmission member 79 includes two fixed sleeves 791 symmetrically fixedly connected on the moving sleeve 74, the inside of the fixed sleeve 791 is fixedly connected with a sliding rod one 792, the inside of the base box 1 is movably connected with two symmetrically arranged rotating rods one 793 through a bearing seat, the rotating rod one 793 is provided with an inclined slot one 794, and the sliding rod one 792 is slidably connected in the inclined slot one 794; The top end of the rotating rod one 793 penetrates to the outside of the base box 1 and is fixedly connected with an eccentric wheel 795, the eccentric wheel 795 is sleeved with a gear sleeve 796, one end of the gear sleeve 796 penetrates to the outside of the side plate 4, and the gear sleeve 796 is engaged with the gear cylinder 77.

[0026] Specifically, the inclined slot one 794 is composed of a vertical slot section and an inclined slot section, when the sliding rod one 792 slides in the vertical slot section of the inclined slot one 794, the rotating rod one 793 does not rotate, when the sliding rod one 792 slides in the inclined slot section of the inclined slot one 794, the rotating rod one 793 drives the eccentric wheel 795 to rotate, the eccentric wheel 795 slides in the gear sleeve 796 and pushes the gear sleeve 796 at the same time, so that the gear sleeve 796 drives the gear cylinder 77 and the pressing plate 78 to rotate, that is, the automatic opening can be completed, the power connection and the avoidance of the pressing plate 78 can be coordinated, and the detection area is avoided from being shielded.

[0027] As Figure 4 and Figure 9 shown, the inside of the concave plate 764 is fixedly connected with a limiting rod 9, the bottom end of the limiting rod 9 is fixedly connected in the inside of the base box 1, the square plate 765 is slidably sleeved on the limiting rod 9, the base box 1 is symmetrically fixedly connected with four L-shaped rods 10, and the gear sleeve 796 is sleeved on the L-shaped rod 10.

[0028] Specifically, the limiting rod 9 can provide accurate guidance for the movement of the moving sleeve 74 and the square sleeve 762, avoid deviation, and further guarantee the butt joint accuracy of the power connector 75; two symmetrically arranged through holes are formed in the gear sleeve 796, the gear sleeve 796 is sleeved on the L-shaped rod 10 through the through hole, and the L-shaped rod 10 can provide accurate guidance for the gear sleeve 796 and ensure that the gear sleeve 796 is stably engaged with the gear cylinder 77.

[0029] As Figure 3 and Figure 7As shown, the spin rotation guard 8 includes a guard plate 81 fixedly connected to the concave plate 764, the inside of the base box 1 is movably connected with a rotating rod two 82 through a bearing seat, a sliding sleeve 83 is sleeved on the rotating rod two 82, the sliding sleeve 83 is fixedly connected to the inside of a fixed sleeve 791, a sliding rod two 84 is fixedly connected to the inside of the sliding sleeve 83, an inclined groove two 85 is formed on the rotating rod two 82, the sliding rod two 84 is slidably connected in the inclined groove two 85, and the top of the rotating rod two 82 is fixedly connected with a protective sleeve 86 through a connecting plate, the protective sleeve 86 is sleeved on the power connection 75, and one side of the protective sleeve 86 is in contact with the guard plate 81.

[0030] Specifically, when not detecting, the protective sleeve 86 is sleeved on the power connection 75 and forms effective protection with the guard plate 81, so as to block impurities from invading, when detecting, the fixed sleeve 791 drives the sliding sleeve 83 and the sliding rod two 84 to slide in the inclined groove two 85, the sliding rod two 84 drives the rotating rod two 82 to rotate, and then drives the protective sleeve 86 to automatically rotate and avoid, without affecting the accurate butt joint of the power connection 75 and the LED display device 6, which not only guarantees the dustproof effect, but also does not damage the original automatic process, and improves the service life of the power connection 75.

[0031] As shown in the figure, Figure 7 The inside of the base box 1 is fixedly connected with a supporting plate 11, the top end of the supporting plate 11 passes through the fixed sleeve 791 and extends to the top of the fixed sleeve 791 and is fixedly connected with a sleeve plate 12, and the sleeve plate 12 is sleeved on the rotating rod two 82.

[0032] Specifically, the supporting plate 11 can provide stable support for the sleeve plate 12, the sleeve plate 12 is sleeved on the rotating rod two 82, and the radial displacement of the rotating rod two 82 is effectively limited, so as to avoid shaking and deviation when rotating.

[0033] As shown in the figure, Figures 4 to 6 The inside of the base box 1 is provided with a circulating dust cleaning assembly 13, the circulating dust cleaning assembly 13 includes a flow guide cylinder 131, the flow guide cylinder 131 is fixedly connected to the inside of the base box 1 through a connecting plate, and the right end of the output shaft of the motor 72 penetrates into the inside of the flow guide cylinder 131 and is fixedly connected with a fan blade 132; One side of the flow guide cylinder 131 is communicated with an exhaust hose 133, an L-shaped sleeve 134 is fixedly connected to the protective box 2, one end of the exhaust hose 133 penetrates into the top of the L-shaped sleeve 134, the bottom of the L-shaped sleeve 134 is communicated with a corrugated hose 135, the bottom of the corrugated hose 135 is communicated with a three-way pipe 136, one end of the three-way pipe 136 penetrates into the inside of the flow guide cylinder 131, and the inside of the three-way pipe 136 is provided with a filter assembly 137.

[0034] Specifically, the inclined groove two 85 is composed of an upper vertical groove segment, a middle inclined groove segment and a lower vertical groove segment. When the sliding rod two 84 slides in the lower vertical groove segment of the inclined groove two 85, the rotating rod two 82 and the L-shaped sleeve 134 will not rotate. At this time, the fan blade 132 is driven by the motor 72 to generate airflow, which is accurately guided through the flow guide cylinder 131, the exhaust hose 133, the L-shaped sleeve 134 and the corrugated hose 135, and the interface at the bottom of the LED display device 6 is quickly sooted. At the same time, the circulating channel is formed by the three-way pipe 136, and the filter assembly 137 is used to suck and recycle the blown impurities, which not only efficiently removes the residual impurities at the interface, but also reduces dust diffusion and keeps the detection environment clean. Then the sliding rod two 84 slides in the middle inclined groove segment of the inclined groove two 85, and further pushes the protective sleeve 86 to rotate, so that the protective sleeve 86 moves away from the electrified connector 75. Finally, when the sliding rod two 84 slides in the upper vertical groove segment of the inclined groove two 85, the rotating rod two 82 will stop rotating. In the initial state, the top of the electrified connector 75 is at a distance from the inner wall of the protective sleeve 86, so that the movement of the electrified connector 75 will not collide with the top of the inner wall of the protective sleeve 86.

[0035] As shown in Figure 5 and Figure 8 , the filter assembly 137 includes a sealing cover 1371 threadedly connected to the three-way pipe 136, and the sealing cover 1371 is fixedly connected with a filter cylinder 1372 inside. The top end of the filter cylinder 1372 extends into the inside of the three-way pipe 136 and is fixedly connected with a sealing ring 1373, and the surface of the sealing ring 1373 is in contact with the inner wall of the three-way pipe 136.

[0036] Specifically, the sealing cover 1371 threadedly connected to the three-way pipe 136 is convenient to disassemble and assemble. The filter cylinder 1372 inside the sealing cover 1371 can efficiently intercept dust, welding slag and other impurities blown in the circulating airflow, so as to avoid the pollution of the impurities backflow to the interface at the bottom of the LED display device 6. The sealing ring 1373 is in contact with the inner wall of the three-way pipe 136 to ensure the sealing performance and prevent air leakage or impurity leakage.

[0037] As shown in Figures 1 to 3 , the bottom of the pressing plate 78 is fixedly connected with a rubber pad 14, and the rubber pad 14 is located at the top of the LED display device 6. One side of the sleeve plate 12 is fixedly connected to the three-way pipe 136.

[0038] Specifically, the three-way pipe 136 is made of stainless steel material; the rubber pad 14 avoids pressure damage to the LED display device 6 by elastic buffering; and the sleeve plate 12 is fixedly connected to one side of the three-way pipe 136, which can support the three-way pipe 136 and improve the stability of the three-way pipe 136, avoiding the shaking and deviation of the three-way pipe 136.

[0039] As shown in Figures 1 to 3As shown, two mounting sleeves 15 are symmetrically fixedly connected on the fixing sleeve 791, and a guide plate 16 is fixedly installed in the mounting sleeve 15 through bolts.

[0040] Specifically, the guide plate 16 can guide and position the LED display device 6 when moving up and down, effectively limits the horizontal displacement in the detection process, guarantees the docking precision of the power connection joint 75 and the interface at the bottom of the LED display device 6, the bolt connection facilitates the adjustment of the distance of the guide plate 16 according to LED display devices 6 of different sizes, and the adaptability is strong.

[0041] Working principle of the present application: In use, the LED display device 6 to be detected is conveyed to the detection station at the top of the base box 1 through the conveying belt 5 on the side plate 4, the motor 72 is started, the fan blade 132 in the flow guide cylinder 131 is directly driven to rotate at the right end of the output shaft of the motor 72, so that a negative pressure airflow is generated in the flow guide cylinder 131; the airflow is sprayed into the interface at the bottom of the LED display device 6 through the exhaust hose 133 on one side of the flow guide cylinder 131, and the dust, welding slag and other impurities in the interface are blown off; at the same time, the airflow carrying the impurities flows back to the flow guide cylinder 131 along the three-way pipe 136, and the filter cylinder 1372 efficiently intercepts the impurities in the airflow during the backflow process, keeping the interface clean. The left end of the output shaft of the motor 72 drives the reciprocating screw rod 73 to rotate through the speed reducer 71, the reciprocating screw rod 73 synchronously drives the fixing sleeve 791 to move through the moving sleeve 74, the sliding sleeve 83 and the second sliding rod 84 in the fixing sleeve 791 synchronously displace with the fixing sleeve 791, the second sliding rod 84 slides in the inclined groove two 85 of the second rotating rod 82, when the second sliding rod 84 drives the second rotating rod 82 to rotate around the bearing seat through the inclined groove two 85, the second rotating rod 82 synchronously rotates the protective sleeve 86 through the connecting plate, so that the protective sleeve 86 is separated from the power connection joint 75 and avoids to one side, without affecting the subsequent power docking action; The moving sleeve 74 continuously moves upwards, the trapezoidal plate 761 on the moving sleeve 74 pushes the square sleeve 762 and the power connection joint 75 to move upwards, when the power connection joint 75 is inserted into the interface of the LED display device 6, the square plate 765 limits the square sleeve 762 through the concave plate 764, and the square sleeve 762 will stop upward; The trapezoidal plate 761 continues to compress the spring 763 upward, the fixed sleeve 791 drives the slide rod one 792 to slide along the inclined groove one 794, the slide rod one 792 drives the rotating rod one 793 to rotate around the bearing seat through the inclined groove one 794, the eccentric wheel 795 at the top end of the rotating rod one 793 rotates synchronously, the eccentric wheel 795 pushes the gear sleeve 796 to move transversely, the gear sleeve 796 drives the pressing plate 78 to rotate through the gear cylinder 77 to avoid, then the motor 72 is closed, the industrial camera 3 on the inner wall top of the protection box 2 starts, the LED display device 6 that is electrified and lighted is scanned and shot in all directions, the light emitting state of each pixel point is captured, the defect detection is completed, after the detection is completed, the motor 72 is started, the reciprocating screw rod 73 will drive the moving sleeve 74 to reset downward, the conveying belt 5 conveys the LED display device 6 that the detection is completed to the next station, the device restores the initial state, waits for the next LED display device 6 to be detected to enter the station, repeats the above process.

[0042] The preferred embodiments of the application disclosed above are only used to help explain the application. The preferred embodiments do not describe all the details, and the application is not limited to the specific embodiments. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and utilize the application. The application is limited by the claims and their entire scope and equivalents.

Claims

1. A detection device for LED display screen, comprising a base box (1), a protective box (2) is fixedly connected on the base box (1) through a connecting plate, an industrial camera (3) is fixedly connected on the top of the inner wall of the protective box (2), two side plates (4) are fixedly connected on the base box (1) in a symmetrical manner, a conveying belt (5) is fixedly connected on the side plate (4), an LED display device (6) is arranged on the top of the base box (1), characterized in that, Also include: Self-positioning power supply (7) is arranged in the inside of base box (1), is used for quick power detection to LED display device (6); The self-positioning power supply (7) includes a reducer (71) fixedly connected in the inside of base box (1), the input end of the reducer (71) is fixedly connected with motor (72), the output end of the reducer (71) is fixedly connected with reciprocating screw rod (73), the reciprocating screw rod (73) is movably connected with mobile sleeve (74), the top of mobile sleeve (74) is provided with power connector (75), the top of mobile sleeve (74) is provided with elastic limiting piece (76) connected with power connector (75), the side plate (4) is hinged with gear cylinder (77) through shaft, gear cylinder (77) is fixedly connected with pressing plate (78), mobile sleeve (74) is provided with transmission part (79) connected with gear cylinder (77); Self-rotating protection piece (8) is arranged in the inside of base box (1), is used for automatic protection to power connector (75). 2.The detection device for LED display screen according to claim 1, wherein, The elastic limiting piece (76) includes a trapezoidal plate (761) fixedly connected on the mobile sleeve (74), a square sleeve (762) is slidably connected on the trapezoidal plate (761), the top of the square sleeve (762) is fixedly connected at the bottom of the power connector (75), the top of the trapezoidal plate (761) is fixedly connected with spring (763), the top end of the spring (763) is fixedly connected in the inside of the square sleeve (762); The inside of the base box (1) is fixedly connected with concave plate (764), one side of the square sleeve (762) and one side of the mobile sleeve (74) are fixedly connected with square plate (765), the square plate (765) is slidably connected in the inside of the concave plate (764).

3. The detection device for LED display screen according to claim 2, characterized in that, The transmission part (79) includes two fixed sleeves (791) fixedly connected on the mobile sleeve (74), the inside of the fixed sleeve (791) is fixedly connected with slide rod one (792), the inside of the base box (1) is movably connected with two symmetrical arranged rotating rods one (793) through bearing seat, the rotating rod one (793) is provided with inclined slot one (794), the slide rod one (792) is slidably connected in the inside of the inclined slot one (794); The top end of the rotating rod one (793) penetrates to the outside of the base box (1) and is fixedly connected with eccentric wheel (795), the eccentric wheel (795) is sleeved with gear sleeve (796), one end of the gear sleeve (796) penetrates to the outside of the side plate (4), the gear sleeve (796) is engaged with the gear cylinder (77).

4. The detection device for LED display screen according to claim 3, characterized in that, The inside of the concave plate (764) is fixedly connected with limiting rod (9), the bottom end of the limiting rod (9) is fixedly connected in the inside of the base box (1), the square plate (765) is slidably connected on the limiting rod (9), the base box (1) is fixedly connected with four L-shaped rods (10), the gear sleeve (796) is sleeved on the L-shaped rod (10).

5. The detection device for LED display screen according to claim 4, characterized in that, The anti-rotation guard (8) comprises a guard plate (81) fixedly connected to the concave plate (764), the inside of the base box (1) is movably connected with a rotating rod two (82) through a bearing seat, a sliding sleeve (83) is sleeved on the rotating rod two (82), the sliding sleeve (83) is fixedly connected in the inside of a fixed sleeve (791), a sliding rod two (84) is fixedly connected in the inside of the sliding sleeve (83), an inclined groove two (85) is formed in the rotating rod two (82), the sliding rod two (84) is slidably connected in the inside of the inclined groove two (85), a protective sleeve (86) is fixedly connected to the top of the rotating rod two (82) through a connecting plate, the protective sleeve (86) is sleeved on the power connection (75), and one side of the protective sleeve (86) is in contact with the guard plate (81).

6. The detection device for LED display screen according to claim 5, characterized in that, The inside of the base box (1) is fixedly connected with a supporting plate (11), the top end of the supporting plate (11) penetrates through the fixed sleeve (791) and extends to the top of the fixed sleeve (791) and is fixedly connected with a sleeve plate (12), the sleeve plate (12) is sleeved on the rotating rod two (82), and one side of the sleeve plate (12) is fixedly connected to the three-way pipe (136). 7.The detection device for LED display screen according to claim 1, wherein, The inside of the base box (1) is provided with a circulating dust cleaning assembly (13), the circulating dust cleaning assembly (13) comprises a flow guide cylinder (131), the flow guide cylinder (131) is fixedly connected in the inside of the base box (1) through a connecting plate, and a fan blade (132) is fixedly connected to the right end of the output shaft of the motor (72) and penetrates into the inside of the flow guide cylinder (131); One side of the flow guide cylinder (131) is communicated with an exhaust hose (133), an L-shaped sleeve (134) is fixedly connected to the protective box (2), one end of the exhaust hose (133) penetrates into the top of the L-shaped sleeve (134), the bottom of the L-shaped sleeve (134) is communicated with a corrugated hose (135), the bottom of the corrugated hose (135) is communicated with the three-way pipe (136), one end of the three-way pipe (136) penetrates into the inside of the flow guide cylinder (131), and the inside of the three-way pipe (136) is provided with a filter assembly (137).

8. The detection device for LED display screen according to claim 7, characterized in that, The filter assembly (137) comprises a sealing cover (1371) screwed on the three-way pipe (136), a filter cylinder (1372) is fixedly connected in the inside of the sealing cover (1371), the top end of the filter cylinder (1372) extends into the inside of the three-way pipe (136) and is fixedly connected with a sealing ring (1373), and the surface of the sealing ring (1373) is in contact with the inner wall of the three-way pipe (136).

9. The detection device for LED display screen according to claim 8, characterized in that, The bottom of the pressing plate (78) is fixedly connected with a rubber pad (14), and the rubber pad (14) is located on the top of the LED display device (6).

10. The detection device for LED display screen according to claim 3, characterized in that, Two mounting sleeves (15) are fixedly connected on the fixed sleeve (791) in symmetry, and a guide plate (16) is fixedly mounted in the inside of the mounting sleeve (15) through bolts.

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