A diode detection device and detection method for a photovoltaic junction box

Abstract

The present invention discloses a diode detection device and detection method for a photovoltaic junction box, which relate to the technical field of diode production, and include: a workbench; two first conveyor belts, which are respectively arranged on both sides of the upper surface of the workbench, and on which are respectively placed a first loading tray loaded with light-emitting diodes to be detected and a second loading tray loaded with good products detected; a loading rotating mechanism, which is arranged between the two first conveyor belts, and includes a rotating ring horizontally rotatingly arranged on the workbench, and a plurality of loading members for storing light-emitting diodes are arranged in a ring on the rotating ring; the present invention can detect a plurality of light-emitting diodes at the same time by means of automated operation, thereby greatly improving the detection efficiency, reducing the workload of the staff, and increasing the output.

Description

Technical Field

[0001] The present invention relates to the technical field of diode production, and in particular to a diode detection device and a detection method for a photovoltaic junction box. Background Art

[0002] The photovoltaic junction box is a connecting device between the solar cell array composed of solar cell modules and the solar charging control device. Generally, multiple light-emitting diodes are used on the photovoltaic junction box to illuminate the operation of the photovoltaic junction box. Therefore, photovoltaic junction box manufacturers need to produce or purchase a large number of light-emitting diodes, which are mainly composed of five materials: pins, silver glue, chips, gold wires and epoxy resins. Light-emitting diodes emit light by releasing energy through the recombination of electrons and holes, and can efficiently convert electrical energy into light energy.

[0003] When light-emitting diodes are produced, they need to be tested. One of the test items is to test whether the light-emitting diodes can emit light normally after being connected to the circuit, so as to determine whether the internal structure of the light-emitting diodes is normal.

[0004] The Chinese utility model patent with authorization announcement number CN 204964695 U discloses a diode detection device. In this patent, when in use, the staff is required to contact the positive and negative contact terminals with the positive and negative pins of the diode respectively. This detection method requires the staff to manually detect the diode, and this detection method can only detect one diode at a time. Such detection greatly increases the workload and energy of the staff, and the detection efficiency is low. Summary of the invention

[0005] The object of the present invention is to provide a diode detection device and detection method for a photovoltaic junction box, which solves the problem that the existing diode detection device uses manual detection and can only detect one diode at a time.

[0006] The present invention solves the above technical problems through the following technical solutions, which include:

[0007] Workbench;

[0008] Two first conveyor belts, the two first conveyor belts are respectively arranged on both sides of the upper surface of the workbench, and the first loading tray loaded with the light-emitting diodes to be inspected and the second loading tray loaded with the inspected good products are respectively placed on the two first conveyor belts;

[0009] A material-carrying rotating mechanism, the material-carrying rotating mechanism is arranged between the two first conveyor belts, the material-carrying rotating mechanism comprises a rotating ring arranged horizontally on the workbench, and a plurality of material-carrying parts for storing light-emitting diodes are arranged in an annular shape on the rotating ring;

[0010] A material pushing mechanism, the material pushing mechanism is arranged on the upper side of the workbench, and the material pushing mechanism is used to push the light-emitting diode in the first loading tray into the loading piece to be detected, and to push out the light-emitting diode in the loading piece that has been detected;

[0011] A power-on mechanism, which is disposed at the lower side of the material carrier to be detected and is used to simultaneously power on and detect multiple light-emitting diodes on the material carrier to be detected;

[0012] A monitoring mechanism, which is arranged on one side of the carrier to be inspected, and which identifies a plurality of energized light-emitting diodes to distinguish good products from defective products;

[0013] Two second conveyor belts, the two second conveyor belts are arranged side by side on one side of the first conveyor belt;

[0014] The material diverting and diverting mechanism is arranged between the material carrier that has been detected and the second material carrier tray, and the material diverting and diverting mechanism diverts the light-emitting diode according to the result identified by the monitoring mechanism.

[0015] Preferably, the material loading rotating mechanism further comprises a fixed ring fixed to the upper surface of the workbench, the rotating ring is rotatably mounted on the upper end of the fixed ring through a slide rail and slider structure, and the rotating ring is driven to rotate horizontally through a rotating driving member;

[0016] The driving member comprises an outer gear ring fixed to a rotating ring and a rotating motor fixed to a working platform, and a rotating gear meshingly connected with the outer gear ring is fixed to an output end of the rotating motor.

[0017] Preferably, the loading member includes a loading bottom support rod fixed to the outside of the rotating ring and two loading side baffle rods, a loading inner cavity is formed between the two loading side baffle rods and the loading bottom support rod, the inner end of the loading inner cavity is connected to a avoidance groove, and the outer ends of the two loading side baffle rods are fixed with bent spring pieces.

[0018] Preferably, the pushing mechanism comprises a telescopic rod and a first straight rod motor fixed to the upper surface of the workbench, the upper end of the telescopic rod is fixed with a guide slide rod through a U-shaped connecting frame, the telescopic end of the first straight rod motor is fixedly connected to the U-shaped connecting frame through a connecting plate, the guide slide rod is horizontally slidably provided with a moving rod, both ends of the moving rod are fixed with pushing blocks, and the pushing blocks extend downward, and the moving rod is driven to move horizontally by a horizontal driving member;

[0019] The horizontal driving member includes a pushing motor fixed to a connecting plate, a pushing gear is fixed to the output end of the pushing motor, and a pushing rack meshingly connected to the pushing gear is fixed to the moving rod. When the horizontal driving member is in operation, the two pushing blocks move along the loading cavities of the loading parts to be detected and the loading parts that have been detected respectively.

[0020] Preferably, the power supply mechanism comprises a U-shaped frame fixed to the upper surface of the workbench, and both sides of the U-shaped frame are vertically flipped and installed with flip blocks, and the outer ends of the two flip blocks are fixed with clamping rods, and the two clamping rods are provided with a plurality of elastic terminals, and the elastic terminals on the two clamping rods are respectively connected to the positive and negative electrodes of the external detection power supply, and a spring is installed between the two flip blocks, and the two clamping rods are driven to flip by the clamping driving member, so that the elastic terminals are in contact with the light-emitting diode pins on the material carrier to be detected;

[0021] The clamping drive member comprises a second straight rod motor fixed on the upper surface of the workbench, a U-shaped support block is fixed to the telescopic end of the second straight rod motor, and two vertical parts of the U-shaped support block are respectively in contact with two flip blocks.

[0022] Preferably, the material diverting and diverting mechanism comprises a transition bottom support rod fixed to the first conveyor belt, two symmetrically arranged transition side baffles are fixed to the upper side of the transition bottom support rod through a connecting block, a transition inner cavity is formed between the two transition side baffles and the transition bottom support rod, the inner sides of one end of the two transition side baffles close to the material carrier are both chamfered, the transition inner cavity corresponds to the material carrier that has been inspected, and there is a gap between the transition inner cavity and the material carrier that has been inspected, the transition bottom support rod is fixed with a connecting rod extending to the gap, and a material diverting member is installed on the upper side of the two transition side baffles, the material diverting member diverts defective products through the gap for diversion, and the two second conveyor belts are respectively located on both sides of the gap;

[0023] The material shifting member comprises a material shifting motor fixed on two transition side baffles through a mounting seat, and a plurality of annularly distributed material shifting blocks are fixed to the output end of the material shifting motor, and the material shifting blocks are adapted to the notch positions.

[0024] Preferably, a first rubber belt arranged along its length direction and a plurality of second rubber belts arranged along its width direction are fixed on the belt of the first conveyor belt, and a positioning area is formed between two adjacent second rubber belts and the first rubber belt, and the first loading tray and the second loading tray are respectively placed in the positioning areas of the two first conveyor belts.

[0025] Preferably, the first loading pallet and the second loading pallet have the same structure, and both comprise an L-shaped plate, a bottom plate portion of the L-shaped plate being adapted to the area of ​​the positioning zone, a plurality of pallet bottom support rods and a plurality of pallet side guard rods being fixed to the vertical plate portion of the L-shaped plate, a pallet inner cavity being formed between two adjacent pallet side guard rods and the pallet bottom support rod, and a picking block being fixed to the outer side of the vertical plate portion of the L-shaped plate.

[0026] Preferably, the monitoring mechanism includes a support rod fixed to the working table inside the fixed ring, a horizontal plate is fixed to the upper end of the support rod, a camera and an infrared camera for photographing multiple light-emitting diodes are fixed on the horizontal plate, and the photographed data are transmitted to an external processor, and the camera and the infrared camera are located on the negative pin side of the light-emitting diode.

[0027] The present invention also provides a detection method for the diode detection device of the photovoltaic junction box described above, comprising the following steps:

[0028] Step 1: Preparation

[0029] Placing the first loading tray and the second loading tray on the two first conveyor belts respectively;

[0030] Step 2: Loading

[0031] Pushing a plurality of light emitting diodes on the first loading tray into the loading piece to be inspected by means of a pushing mechanism;

[0032] Step 3: Power-on test

[0033] The plurality of light emitting diodes are energized by the energizing mechanism, and the good light emitting diodes light up normally; the open-circuit light emitting diodes are not energized and will not light up, and the short-circuit light emitting diodes are energized and will not light up;

[0034] Step 4: Image acquisition

[0035] A brightness image is obtained by photographing with a camera; an infrared image is obtained by photographing with an infrared camera; and the brightness image and the infrared image are transmitted to a processor, which integrates the brightness image and the infrared image to form a comprehensive expression image, and numbers a plurality of light-emitting diodes;

[0036] Step 5: Good product classification

[0037] By analyzing the comprehensive expression image, the light-emitting diodes are classified into good, open circuit and short circuit, and the classification is recorded by number. The classification basis is:

[0038] If the brightness is normal and the temperature of the negative pin increases, it is a good product;

[0039] If it is not lit and the temperature of the negative pin does not change, it is an open circuit;

[0040] If it is not lit and the temperature of the negative pin increases, it is a short circuit;

[0041] Step 6: Product diversion

[0042] By numbering and classifying the LEDs, when the pushing mechanism pushes the LEDs in the inspected carrier to move, the material diverting and diverting mechanism diverts the LEDs so that good products flow into the second carrier tray for collection, and open-circuited and short-circuited LEDs are respectively diverted to the two second conveyor belts.

[0043] Compared with the prior art, the beneficial effects of the present invention are:

[0044] 1. The present invention can detect multiple light-emitting diodes simultaneously through automated operation, which greatly improves the detection efficiency, reduces the workload of staff, and increases production;

[0045] 2. Multiple light-emitting diodes can be screened and diverted through the material diversion mechanism, and good diodes can be stored in the corresponding material trays. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a structural schematic diagram of the present invention;

[0047] Figure 2 It is a structural schematic diagram of the material-carrying rotating mechanism in the present invention;

[0048] Figure 3 It is a schematic diagram of the structure of the power supply mechanism and the material carrier in the present invention;

[0049] Figure 4 It is a structural schematic diagram of the material pushing mechanism in the present invention;

[0050] Figure 5 It is a schematic structural diagram of the first transmission belt in the present invention;

[0051] Figure 6 It is a structural schematic diagram of the second material loading tray and the material diverting and diverting mechanism in the present invention;

[0052] Figure 7 for Figure 6 The enlarged structural diagram at A in the middle;

[0053] Figure 8 It is a schematic diagram of the structure of the monitoring mechanism in the present invention.

[0054] The numbers in the figure represent:

[0055] 1-workbench; 2-light-emitting diode; 301-first loading tray; 302-second loading tray; 31-L-shaped plate; 32-tray bottom support rod; 33-tray side stop rod; 34-tray inner cavity; 35-pick-up block; 4-loading rotating mechanism; 41-fixing ring; 42-rotating ring; 43-slide rail slider structure; 44-rotating motor; 45-rotating gear; 46-external gear ring; 47-loading member; 471-loading bottom support rod; 472-loading side stop rod; 473-loading inner cavity; 474-avoidance groove; 475-bending spring piece; 5-power-on mechanism; 51-U-shaped frame; 52-turning block; 53-U-shaped support block; 54-second straight rod motor; 55-clamping rod; 5 6-spring; 57-elastic terminal; 6-monitoring mechanism; 61-support rod; 62-cross plate; 63-camera; 64-infrared camera; 7-pushing mechanism; 71-telescopic rod; 72-U-shaped connecting frame; 73-guide slide rod; 74-moving rod; 75-pushing block; 76-first straight rod motor; 77-pushing motor; 78-pushing gear; 79-pushing rack; 8-first conveyor belt; 81-first rubber belt; 82-second rubber belt; 83-positioning area; 9-material diversion mechanism; 91-transition bottom support rod; 92-transition side baffle; 921-chamfer; 93-transition inner cavity; 94-pushing motor; 95-pushing block; 96-connecting rod; 10-second conveyor belt. DETAILED DESCRIPTION

[0056] The above and other technical features and advantages of the present invention are described in more detail below in conjunction with the accompanying drawings.

[0057] This embodiment provides a technical solution: a diode detection device and detection method for a photovoltaic junction box, comprising a workbench 1, two first conveyor belts 8, a material-carrying rotating mechanism 4, a material-pushing mechanism 7, an energizing mechanism 5, a monitoring mechanism 6, two second conveyor belts 10, and a material-diverting and diverting mechanism 9. All electrical appliances in the present invention are controlled and operated by an LPC controller;

[0058] like Figure 1 As shown, two first conveyor belts 8 are respectively arranged on both sides of the upper surface of the workbench 1, and the two first conveyor belts 8 are used for loading and unloading respectively. The first conveyor belt 8 for loading is provided with a first loading tray 301 loaded with the light-emitting diodes 2 to be detected, and the first conveyor belt 8 for unloading is provided with a second loading tray 302 detected as good products. The placement and removal of the first loading tray 301 and the second loading tray 302 can be completed manually or by a robotic arm.

[0059] like Figure 5As shown, a first rubber belt 81 arranged along its length direction and a plurality of second rubber belts 82 arranged along its width direction are fixed on the belt of the first conveyor belt 8, and a positioning area 83 is formed between two adjacent second rubber belts 82 and the first rubber belt 81. The first loading tray 301 and the second loading tray 302 are respectively placed in the positioning areas 83 of the two first conveyor belts 8, and the positioning area 83 is adapted to the bottom area of ​​the second loading tray 302 and the first loading tray 301, so that the positions of the first loading tray 301 and the second loading tray 302 are accurately placed, and the first loading tray 301 and the second loading tray 302 can be accurately moved and positioned through the PLC controller.

[0060] like Figure 6 As shown, the first loading tray 301 and the second loading tray 302 have the same structure. Both the first loading tray 301 and the second loading tray 302 include an L-shaped plate 31. The L-shaped plate 31 has a bottom plate portion and a vertical plate portion fixed to one side of the bottom plate portion. The bottom plate portion of the L-shaped plate 31 is adapted to the area of ​​the positioning area 83.

[0061] The vertical plate portion of the L-shaped plate 31 is fixed with multiple tray bottom support rods 32 and multiple tray side baffles 33, and the multiple tray bottom support rods 32 and the multiple tray side baffles 33 are evenly arranged, and a tray inner cavity 34 is formed between two adjacent tray side baffles 33 and the tray bottom support rod 32, and the gap between two adjacent tray side baffles 33 is adapted to the width of the light-emitting diode 2, and the width of the tray bottom support rod 32 is adapted to the spacing between the two pins of the light-emitting diode 2, that is, the light-emitting diode 2 can be stably placed through the cooperation of the tray bottom support rod 32 and the two tray side baffles 33. In order to prevent the light-emitting diode 2 from falling, a detachable baffle plate can be provided on the side away from the vertical plate portion, and the baffle plate is plugged into the bottom plate portion of the L-shaped plate 31 (not shown in the figure), and a picking block 35 is fixed to the outer side of the vertical plate portion of the L-shaped plate 31, and the picking block 35 can be used as a fulcrum for a robot or an operator.

[0062] like Figure 1 and Figure 2 As shown, the material-carrying rotating mechanism 4 is arranged between the two first conveyor belts 8, and the material-carrying rotating mechanism 4 comprises a fixed ring 41 fixed to the upper surface of the workbench 1, a rotating ring 42 is horizontally rotatably mounted on the fixed ring 41, and a plurality of material-carrying members 47 for storing the light-emitting diodes 2 are arranged in an annular shape on the rotating ring 42, and the plurality of material-carrying members 47 are an even number and are evenly distributed, and four material-carrying members 47 are used in this embodiment;

[0063] The rotating ring 42 is rotatably mounted on the upper end of the fixed ring 41 through a slide rail and slider structure 43. The slide rail and slider structure 43 includes an annular slide rail fixed to the fixed ring 41 and an annular slider fixed to the lower side of the rotating ring 42, and the annular slide rail is slidably connected to the annular slider.

[0064] The rotating ring 42 is driven to rotate horizontally by a rotating driving member; the driving member includes an external gear ring 46 fixed to the rotating ring 42 and a rotating motor 44 fixed to the working table 1. A rotating gear 45 meshed with the external gear ring 46 is fixed to the output end of the rotating motor 44. By operating the rotating motor 44 to drive the rotating gear 45 to rotate, the rotating gear 45 drives the rotating ring 42 and the loading member 47 to rotate through cooperation with the external gear ring 46, so that the two symmetrically arranged loading members 47 respectively correspond to the first loading tray 301 and the second loading tray 302, and then the loading and unloading are carried out by the pushing mechanism 7.

[0065] As Figure 2 shown in Figure 3 As shown, the loading member 47 includes a loading bottom support rod 471 fixed to the outside of the rotating ring 42 and two loading side blocking rods 472. The loading bottom support rod 471 and the two loading side blocking rods 472 have the same dimensions as the tray bottom support rod 32 and the two tray side blocking rods 33 respectively; a loading inner cavity 473 is formed between the two loading side blocking rods 472 and the loading bottom support rod 471. The loading inner cavity 473 has the same dimensions as the tray inner cavity 34. An avoidance groove 474 is communicated with the inner end of the loading inner cavity 473. The light-emitting diode 2 cannot enter the avoidance groove 474. Bent elastic pieces 475 are fixed to the outer ends of the two loading side blocking rods 472. The closest parts of the two bent elastic pieces 475 have a size smaller than the diameter of the light-emitting diode 2, so that the light-emitting diode 2 cannot easily break away from the loading member 47, ensuring that when the loading member 47 rotates, the light-emitting diode 2 will not be thrown out due to centrifugal force; when the light-emitting diode 2 passes through the gap between the two bent elastic pieces 475, the two bent elastic pieces 475 are both extruded outward and slightly deformed, so that the light-emitting diode 2 can pass through smoothly.

[0066] As Figure 1 shown in Figure 4 As shown, the pushing mechanism 7 is arranged on the upper side of the working table 1. The pushing mechanism 7 is used to synchronously push the light-emitting diode 2 in the first loading tray 301 into the to-be-detected loading member 47, and push the light-emitting diode 2 in the detected loading member 47 out.

[0067] The pushing mechanism 7 includes a telescopic rod 71 and a first linear rod motor 76 fixed to the upper surface of the working table 1. The upper end of the telescopic rod 71 is fixed with a guiding slide rod 73 through a U-shaped connecting frame 72. The vertical cross-section of the guiding slide rod 73 is a "匚" - shaped structure. The telescopic end of the first linear rod motor 76 is fixedly connected to the U-shaped connecting frame 72 through a connecting plate. A moving rod 74 is horizontally slidably arranged on the guiding slide rod 73. Pushing blocks 75 are fixed to both ends of the moving rod 74, and the pushing blocks 75 extend downward. The moving rod 74 is driven to move horizontally by a horizontal driving member. By extending and retracting the telescopic end of the first linear rod motor 76, the vertical positions of the moving rod 74 and the two pushing blocks 75 can be adjusted.

[0068] The horizontal driving member includes a pushing motor 77 fixed to the connecting plate, a pushing gear 78 is fixed to the output end of the pushing motor 77, and a pushing rack 79 meshingly connected with the pushing gear 78 is fixed to the moving rod 74. When the horizontal driving member is in operation, the two pushing blocks 75 move along the loading inner cavity 473 of the loading member 47 to be detected and the loading member 47 that has been detected respectively;

[0069] When it is necessary to push the light-emitting diode 2 to move, the telescopic end of the first straight rod motor 76 is retracted so that the two pushing blocks 75 are respectively located in the vertical part of the first loading tray 301 and in the avoidance groove 474 of the loading part 47 that has been detected. Then the pushing motor 77 is operated, and through the cooperation of the pushing gear 78 and the pushing rack 79, the light-emitting diode 2 in the corresponding tray cavity 34 of the first loading tray 301 can be pushed into the loading part 47 to be detected, and at the same time, the light-emitting diode 2 in the loading part 47 that has been detected can be pushed into the tray cavity 34 in the second loading tray 302.

[0070] like Figure 1 and Figure 3 As shown, the power-on mechanism 5 is disposed at the lower side of the material carrier 47 to be detected, and the power-on mechanism 5 is used to simultaneously power-on and detect multiple light-emitting diodes 2 on the material carrier 47 to be detected;

[0071] The power supply mechanism 5 includes a U-shaped frame 51 fixed to the upper surface of the workbench 1, and both sides of the U-shaped frame 51 are vertically flipped and installed with flip blocks 52, and the outer ends of the two flip blocks 52 are fixed with clamping rods 55, and the two clamping rods 55 are provided with a plurality of elastic terminals 57, and the elastic terminals 57 on the two clamping rods 55 are respectively connected to the positive and negative electrodes of the external detection power supply;

[0072] When the two flip blocks 52 flip upward, the multiple elastic terminals 57 on both sides contact the positive and negative pins of the light-emitting diodes 2 one by one, respectively, to complete the power-on of the multiple light-emitting diodes 2. A spring 56 is installed between the two flip blocks 52. Without being affected by other external forces, the flip blocks 52 on both sides will flip outward due to the force of the spring 56. At this time, the height of the clamping rod 55 is lower than the bottom height of the bottom support rod 471 of the material carrier, so that when the material carrier 47 moves, it will not interfere with the clamping rod 55.

[0073] The two clamping rods 55 are driven to flip through the clamping driving member, so that the elastic terminal 57 contacts the pin of the light-emitting diode 2 on the carrier 47 to be detected. The clamping driving member includes a second straight rod motor 54 fixed to the upper surface of the workbench 1. The telescopic end of the second straight rod motor 54 is fixed with a U-shaped support block 53, and the two vertical parts of the U-shaped support block 53 are in contact with the two flipping blocks 52 respectively. When the telescopic end of the second straight rod motor 54 is extended, the two vertical parts of the U-shaped support block 53 respectively flip the two flipping blocks 52 upward, and the two clamping rods 55 will also flip at the same time.

[0074] like Figure 1 and Figure 8 As shown, the monitoring mechanism 6 is arranged on one side of the material carrier 47 to be detected, and the monitoring mechanism 6 identifies the multiple light-emitting diodes 2 that are powered on, and distinguishes good products from defective products; the monitoring mechanism 6 includes a support rod 61 fixed to the working table 1 inside the fixed ring 41, and a horizontal plate 62 is fixed to the upper end of the support rod 61. The height of the horizontal plate 62 is higher than the height of the material carrier 47 to avoid interference with the material carrier 47. A camera 63 and an infrared camera 64 for photographing the multiple light-emitting diodes 2 are fixed on the horizontal plate 62, and the data obtained by the photographing are transmitted to an external processor, and the processor is connected to the PLC controller. The camera 63 and the infrared camera 64 are located on the negative pin side of the light-emitting diode 2;

[0075] The infrared camera 64 can detect the temperature of the cathode pin of the light-emitting diode 2; the detection method of the camera 63 and the infrared camera 64: according to the cooperation of the camera 63 and the infrared camera 64, the light-emitting diode 2 is classified into three types: good light-emitting diode 2, open-circuit light-emitting diode 2 and short-circuit light-emitting diode 2, among which the good light-emitting diode 2 is normally lit and the temperature of the cathode pin is increased; the open circuit means that the light-emitting diode 2 is internally broken and loses the conduction ability; the open-circuit light-emitting diode 2 is not powered, so the light-emitting diode 2 will not light up and the temperature of the cathode pin will not increase; the short circuit means that the light-emitting diode 2 is short-circuited, loses the cut-off ability, and is always in the conduction state. The short-circuit light-emitting diode 2 is powered but will not light up, so the temperature of the cathode pin is increased.

[0076] like Figure 1 As shown, two second conveyor belts 10 are arranged in parallel on one side of the first conveyor belt 8, and the two second conveyor belts 10 are arranged along the length direction of the first conveyor belt 8, and the conveying directions of the two second conveyor belts 10 are both toward the outside of the workbench 1, that is, the conveying directions of the two second conveyor belts 10 are opposite, and loading devices for loading defective products can be placed on the outside of the two first conveyor belts 8.

[0077] like Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, the material diverting and diverting mechanism 9 is disposed between the material carrier 47 that has been detected and the second material carrier tray 302, and the material diverting and diverting mechanism 9 diverts the light emitting diodes 2 according to the results identified by the monitoring mechanism 6;

[0078] The material diversion mechanism 9 includes a transition bottom support rod 91 fixed to the first conveyor belt 8. Two symmetrically arranged transition side baffles 92 are fixed to the upper side of the transition bottom support rod 91 through a connecting block. A transition inner cavity 93 is formed between the two transition side baffles 92 and the transition bottom support rod 91. The two transition side baffles 92 and the transition bottom support rod 91 correspond to the positions of the two tray side baffles 33 and the tray bottom support rod 32 respectively. The material loading inner cavity 473, the transition inner cavity 93 and the tray inner cavity 34 are located on the same straight line. The light-emitting diode 2 can enter the tray inner cavity 34 through the transition inner cavity 93; the inner sides of the two transition side baffles 92 close to the material loading member 47 are processed with The chamfer 921 allows the light-emitting diode 2 to smoothly enter the tray cavity 34. There is a gap between the transition cavity 93 and the detected carrier 47. The transition bottom support rod 91 is fixed with a connecting rod 96 extending to the gap. The connecting rod 96 is close to the carrier side baffle 472 but does not touch it. The carrier 47 will not interfere with the connecting rod 96 when rotating. The upper side of the two transition side baffles 92 is installed with a material-diverting member, which diverts defective products through the gap. The two second conveyor belts 10 are respectively located on both sides of the gap. The light-emitting diodes 2 diverted to the two sides will fall onto the two second conveyor belts 10 respectively, and be transmitted to the loading device to complete classification and collection;

[0079] The material-discharging member includes a material-discharging motor 94 fixed on two transition side baffles 92 through a mounting base, and a plurality of annularly distributed material-discharging blocks 95 are fixed to the output end of the material-discharging motor 94, and the material-discharging blocks 95 are adapted to the position of the notch. The material-discharging motor 94 is driven to rotate by running the material-discharging motor 94, and the rotation of the material-discharging block 95 will push the defective light-emitting diodes 2 to one side and drop them, and the light-emitting diodes 2 will be shunted according to whether they are open circuit or short circuit, while the good light-emitting diodes 2 will pass through and then be pushed into the tray cavity 34 for storage by the pushing mechanism 7.

[0080] The present invention also proposes a detection method using the diode detection device of the photovoltaic junction box, such as Figure 1-Figure 8 As shown, the following steps are included:

[0081] Step 1: Preparation

[0082] The first loading tray 301 and the second loading tray 302 are placed on the two first conveyor belts 8 respectively. When in use, when one tray cavity 34 of the second loading tray 302 is fully loaded with light-emitting diodes 2, the first conveyor belt 8 is controlled by the PLC controller to operate so that the next tray cavity 34 of the second loading tray 302 corresponds to the transition cavity 93;

[0083] Step 2: Loading

[0084] The plurality of LEDs 2 on the first loading tray 301 are pushed into the loading piece 47 to be inspected by the pushing mechanism 7. If there are LEDs 2 in the loading piece 47 that has been inspected, the pushing mechanism 7 will also push the LEDs 2 inside it out of the second loading tray 302.

[0085] Step 3: Power-on test

[0086] The multiple light-emitting diodes 2 are energized by the energizing mechanism 5. Due to the resistance of the pins themselves, the pins will also experience a slight temperature change. The good light-emitting diodes 2 light up normally, and the temperature of their cathode pins increases. The open-circuit light-emitting diodes 2 are not energized and will not light up, and the temperature of their cathode pins remains unchanged. The short-circuit light-emitting diodes 2 are energized and will not light up, and the temperature of their cathode pins increases.

[0087] Step 4: Image acquisition

[0088] A brightness image is obtained by shooting with the camera 63. For example, if the light-emitting diode 2 is lit, the image shows that the grayscale value of the pixel of the light-emitting diode 2 is high, so it can be identified whether the light-emitting diode 2 is lit; an infrared image is obtained by shooting with the infrared camera 64. When the temperature of the negative electrode pin is increased, the infrared image shows that the pixel grayscale value of the negative electrode pin is high, so the infrared camera 64 can identify whether the negative electrode pin is powered on; the brightness image and the infrared image are transmitted to the processor, and the processor integrates the brightness image and the infrared image to form a comprehensive expression image, and numbers the multiple light-emitting diodes 2;

[0089] Step 5: Good product classification

[0090] By analyzing the comprehensive expression image, the light emitting diodes 2 are classified into good products, open circuits and short circuits, and the classification is recorded by numbering. The classification basis is:

[0091] If the brightness is normal and the temperature of the negative pin increases, it is a good product;

[0092] If it is not lit and the temperature of the negative pin does not change, it is an open circuit;

[0093] If it is not lit and the temperature of the negative pin increases, it is a short circuit;

[0094] Step 6: Product diversion

[0095] By numbering and classifying the light-emitting diodes 2, when the pushing mechanism 7 pushes the light-emitting diodes 2 in the carrier 47 that have been inspected to move, the material diverting and diverting mechanism 9 diverts the light-emitting diodes 2 so that good products flow into the second loading tray 302 for collection, and open-circuited and short-circuited light-emitting diodes 2 are respectively diverted to the two second conveyor belts 10 and collected.

[0096] The above are only preferred embodiments of the present invention, which are only illustrative and not restrictive. Those skilled in the art understand that many changes, modifications, and even equivalences may be made to the present invention within the spirit and scope defined by the claims, but all of them will fall within the scope of protection of the present invention.

Claims

1. A diode detection device for a photovoltaic junction box, characterized in that: include: Workbench (1); Two first conveyor belts (8), the two first conveyor belts (8) are respectively arranged on both sides of the upper surface of the workbench (1), and a first loading tray (301) loaded with light-emitting diodes (2) to be tested and a second loading tray (302) loaded with good products are respectively placed on the two first conveyor belts (8), and the light-emitting diodes (2) on the first loading tray (301) and the second loading tray (302) are placed in multiple rows; A material loading rotating mechanism (4), the material loading rotating mechanism (4) is arranged between two first conveyor belts (8), the material loading rotating mechanism (4) comprises a rotating ring (42) horizontally rotatingly arranged on the workbench (1), a plurality of material loading members (47) for storing light-emitting diodes (2) are arranged in a ring shape on the rotating ring (42); the material loading member (47) comprises a material loading bottom support rod (471) fixed to the outside of the rotating ring (42) and two material loading side blocking rods (472), a material loading inner cavity (473) is formed between the two material loading side blocking rods (472) and the material loading bottom support rod (471), an inner end of the material loading inner cavity (473) is connected to an avoidance groove (474), and the outer ends of the two material loading side blocking rods (472) are fixed with bent spring pieces (475); A material pushing mechanism (7), the material pushing mechanism (7) being arranged on the upper side of the workbench (1), the material pushing mechanism (7) being used to push a corresponding row of light-emitting diodes (2) in the first material loading tray (301) into a material loading piece (47) to be inspected, and to push out a row of light-emitting diodes (2) in a material loading piece (47) that has been inspected; An energizing mechanism (5), the energizing mechanism (5) being arranged at the lower side of the material carrier (47) to be detected, the energizing mechanism (5) being used for synchronously energizing and detecting a plurality of light emitting diodes (2) on the material carrier (47) to be detected; A monitoring mechanism (6), the monitoring mechanism (6) being arranged on one side of the material carrier (47) to be inspected, the monitoring mechanism (6) identifying the plurality of energized light emitting diodes (2) to distinguish good products from defective products; Two second conveyor belts (10), the two second conveyor belts (10) being arranged side by side on one side of the first conveyor belt (8); A material diverting and diverting mechanism (9), wherein the material diverting and diverting mechanism (9) is arranged between the material carrier (47) that has been inspected and the second material carrier tray (302), and the material diverting and diverting mechanism (9) diverts the light-emitting diode (2) according to the result identified by the monitoring mechanism (6).

2. A diode detection device for a photovoltaic junction box according to claim 1, characterized in that: The material loading rotating mechanism (4) further comprises a fixed ring (41) fixed to the upper surface of the workbench (1); the rotating ring (42) is rotatably mounted on the upper end of the fixed ring (41) via a slide rail and slider structure (43); and the rotating ring (42) is driven to rotate horizontally via a rotating driving member; The driving member comprises an outer gear ring (46) fixed to a rotating ring (42) and a rotating motor (44) fixed to a workbench (1); a rotating gear (45) meshingly connected to the outer gear ring (46) is fixed to an output end of the rotating motor (44).

3. A diode detection device for a photovoltaic junction box according to claim 1, characterized in that: The pushing mechanism (7) comprises a telescopic rod (71) and a first straight rod motor (76) fixed to the upper surface of the workbench (1); the upper end of the telescopic rod (71) is fixed with a guide slide rod (73) via a U-shaped connecting frame (72); the telescopic end of the first straight rod motor (76) is fixedly connected to the U-shaped connecting frame (72) via a connecting plate; the guide slide rod (73) is provided with a moving rod (74) for horizontal sliding; both ends of the moving rod (74) are fixed with pushing blocks (75), and the pushing blocks (75) extend downward; the moving rod (74) is driven to move horizontally by a horizontal driving member; The horizontal driving member comprises a pushing motor (77) fixed to a connecting plate, a pushing gear (78) being fixed to an output end of the pushing motor (77), a pushing rack (79) being fixed to the moving rod (74) and being meshedly connected to the pushing gear (78), and when the horizontal driving member is in operation, the two pushing blocks (75) respectively move along the loading inner cavity (473) of the loading member (47) to be detected and the loading member (47) which has been detected.

4. A diode detection device for a photovoltaic junction box according to claim 1, characterized in that: The power supply mechanism (5) comprises a U-shaped frame (51) fixed on the upper surface of the workbench (1), and both sides of the U-shaped frame (51) are vertically flipped and installed with flip blocks (52), and the outer ends of the two flip blocks (52) are fixed with clamping rods (55), and the two clamping rods (55) are provided with a plurality of elastic terminals (57), and the elastic terminals (57) on the two clamping rods (55) are respectively connected to the positive and negative poles of the external detection power supply, and a spring (56) is installed between the two flip blocks (52), and the two clamping rods (55) are driven to flip by the clamping driving member, so that the elastic terminals (57) are in contact with the pins of the light-emitting diode (2) on the carrier (47) to be detected; The clamping drive component comprises a second straight rod motor (54) fixed to the upper surface of the workbench (1), a U-shaped support block (53) being fixed to the telescopic end of the second straight rod motor (54), and two vertical parts of the U-shaped support block (53) are respectively in contact with two flip blocks (52).

5. The diode detection device for a photovoltaic junction box according to claim 1, characterized in that: The material diversion and diversion mechanism (9) comprises a transition bottom support rod (91) fixed to the first conveyor belt (8), and two symmetrically arranged transition side baffles (92) are fixed on the upper side of the transition bottom support rod (91) through a connecting block, and a transition inner cavity (93) is formed between the two transition side baffles (92) and the transition bottom support rod (91), and the inner sides of one end of the two transition side baffles (92) close to the material carrier (47) are processed with a chamfer (921), and the transition inner cavity (93) corresponds to the material carrier (47) that has been inspected, and there is a gap between the transition inner cavity (93) and the material carrier (47) that has been inspected, and the transition bottom support rod (91) is fixed with a connecting rod (96) extending to the gap, and the upper sides of the two transition side baffles (92) are installed with material diversion parts, and the material diversion parts divert defective products through the gap for diversion, and the two second conveyor belts (10) are respectively located on both sides of the gap; The material shifting member comprises a material shifting motor (94) fixed to two transition side baffles (92) via a mounting seat, and a plurality of annularly distributed material shifting blocks (95) are fixed to the output end of the material shifting motor (94), and the material shifting blocks (95) are adapted to the notch positions.

6. A diode detection device for a photovoltaic junction box according to claim 1, characterized in that: A first rubber belt (81) arranged along its length direction and a plurality of second rubber belts (82) arranged along its width direction are fixed on the belt of the first conveyor belt (8), and a positioning area (83) is formed between two adjacent second rubber belts (82) and the first rubber belt (81), and the first loading tray (301) and the second loading tray (302) are respectively placed in the positioning areas (83) of the two first conveyor belts (8).

7. A diode detection device for a photovoltaic junction box according to claim 6, characterized in that: The first loading tray (301) and the second loading tray (302) have the same structure. Both the first loading tray (301) and the second loading tray (302) comprise an L-shaped plate (31). The bottom plate portion of the L-shaped plate (31) is adapted to the area of ​​the positioning area (83). The vertical plate portion of the L-shaped plate (31) is fixed with a plurality of tray bottom support rods (32) and a plurality of tray side baffle rods (33). A tray inner cavity (34) is formed between two adjacent tray side baffle rods (33) and the tray bottom support rod (32). A picking block (35) is fixed to the outer side of the vertical plate portion of the L-shaped plate (31).

8. A diode detection device for a photovoltaic junction box according to claim 1, characterized in that: The monitoring mechanism (6) comprises a support rod (61) fixed to an operating table (1) inside a fixed ring (41); a horizontal plate (62) is fixed to the upper end of the support rod (61); a camera (63) and an infrared camera (64) for photographing a plurality of light-emitting diodes (2) are fixed to the horizontal plate (62); and the photographed data are transmitted to an external processor; the camera (63) and the infrared camera (64) are located on the negative electrode pin side of the light-emitting diode (2).

9. A detection method for the diode detection device of the photovoltaic junction box according to claim 8, characterized in that: The following steps are involved: Step 1: Preparation Placing the first loading tray (301) and the second loading tray (302) on two first conveyor belts (8) respectively; Step 2: Loading Pushing a plurality of light-emitting diodes (2) on a first loading tray (301) into a loading piece (47) to be inspected by means of a pushing mechanism (7); Step 3: Power-on test The plurality of light-emitting diodes (2) are energized by the energizing mechanism (5), and the good light-emitting diodes (2) light up normally; the open-circuit light-emitting diodes (2) are not energized and will not light up, and the short-circuit light-emitting diodes (2) are energized and will not light up; Step 4: Image acquisition A brightness image is obtained by photographing with a camera (63); an infrared image is obtained by photographing with an infrared camera (64); and the brightness image and the infrared image are transmitted to a processor, which integrates the brightness image and the infrared image to form a comprehensive expression image, and numbers the plurality of light-emitting diodes (2); Step 5: Good product classification By analyzing the comprehensive expression image, the light emitting diodes (2) are classified into good products, open circuits and short circuits, and the classification is recorded by numbering. The classification basis is: If the brightness is normal and the temperature of the negative pin increases, it is a good product; If it is not lit and the temperature of the negative pin does not change, it is an open circuit; If it is not lit and the temperature of the negative pin increases, it is a short circuit; Step 6: Product diversion By numbering and classifying the light-emitting diodes (2), when the pushing mechanism (7) pushes the light-emitting diodes (2) in the carrier (47) that have been inspected to move, the material diverting and diverting mechanism (9) diverts the light-emitting diodes (2), so that good products flow into the second carrier tray (302) for collection, and the open-circuited and short-circuited light-emitting diodes (2) are respectively diverted to the two second conveyor belts (10).

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