SMT patch detection device

Abstract

The present invention discloses an SMT patch inspection device, comprising: a housing; a belt conveyor assembly disposed within the housing, with a plurality of clamping devices disposed on opposing surfaces of the belt conveyor assembly; a plurality of connecting rod transmission assemblies symmetrically disposed at the top and bottom of the housing; and a plurality of camera acquisition assemblies disposed on the mounting frame. By sequentially deflecting a PCB at different angles, the present invention, in conjunction with the plurality of camera acquisition assemblies, can sequentially detect and capture the various angular states of each group of components and PCBs on the belt conveyor assembly, significantly improving work efficiency. Furthermore, by detecting the states of components and PCBs at multiple angles, the accuracy of the inspection is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of SMT patch detection, in particular to an SMT patch detection device. Background Art

[0002] SMT is surface mount technology (SMT), the most popular technology and process in the electronics assembly industry. It is a circuit connection technology that mounts leadless or short-lead surface mount components on the surface of a printed circuit board or other substrate, and assembles them by soldering them through methods such as reflow soldering or dip soldering. In the current SMT processing industry, SMT patches need to be tested to ensure product quality and not affect subsequent production.

[0003] For example, a Chinese patent discloses a quality inspection device for SMT patches (202110408843.5), comprising: an operating table, a detection mechanism, a lifting and fixing mechanism, and a clamping and fixing mechanism; wherein, the detection mechanism is installed on the operating table, and the detection mechanism is used to detect SMT patches; wherein, the lifting and fixing mechanism is installed on the operating table; wherein, the clamping and fixing mechanism is installed on the detection mechanism, and the clamping and fixing mechanism and the lifting and fixing mechanism are located on the same side, and the clamping and fixing mechanism is used to clamp the SMT patch; after the SMT patch is fixed by using the lifting and fixing mechanism and the clamping and fixing mechanism, the detection mechanism is started to illuminate the SMT patch. When the light passes through the SMT patch, it indicates that the SMT patch has cracks, and the light-controlled switch activates the speaker alarm, thereby improving the effect of SMT patch detection and facilitating the operator to locate the position of the SMT patch crack;

[0004] However, in actual use, the practicality is not high. There are many reasons that affect the quality of SMT patches. Moreover, the device does not detect the status of SMT patches in multiple directions, the detection accuracy is not high, and the SMT patches need to be inspected one by one, resulting in low work efficiency. Summary of the Invention

[0005] The present invention aims to provide an SMT patch inspection device. By deflecting a PCB at different angles in sequence and cooperating with a plurality of camera acquisition components, the device can sequentially detect and obtain the various angular states of each group of components and PCBs on a belt conveyor assembly, thereby greatly improving work efficiency. Furthermore, the multi-angle detection of the component and PCB states further improves the detection accuracy.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an SMT patch detection device, comprising: a box; and a belt conveyor assembly arranged inside the box, wherein the opposite surfaces of the belt conveyor assembly are provided with a plurality of clamping devices for limiting and clamping the PCB board; further comprising a plurality of connecting rod transmission assemblies symmetrically arranged at the top and bottom of the box, and the connecting rod transmission assemblies can be used for angular deflection of the PCB board where the belt conveyor assembly is located; a mounting frame is also provided in the middle of the box, and a plurality of camera acquisition assemblies are provided on the mounting frame, and each of the camera acquisition assemblies corresponds one-to-one to a shooting position of the PCB board.

[0007] Preferably, each group of the connecting rod transmission assembly includes a mounting base fixed to the inner wall of the box, and rollers arranged at both ends of the horizontal section of the mounting base through a first pin and a second pin and rotatably connected to the mounting base, and also includes a transmission belt sleeved on the two rollers; a first mounting rod is rotatably connected to the first pin, and a second mounting rod is rotatably connected to the end of the first mounting rod away from the roller; the side walls of the first mounting rod and the second mounting rod are respectively fixed with mounting sleeves, which are used to adjust the running angle of the belt conveyor assembly when the first mounting rod and the second mounting rod are deflected; it also includes a third mounting rod fixed to the second pin, and the end of the third mounting rod away from the second pin is rotatably connected to the middle of the second mounting rod through the mounting shaft; the end side wall of the mounting seat close to the first pin is also provided with a first micro motor, and the first micro motor passes through the through hole opened on the mounting seat and is fixedly connected to the first pin.

[0008] Preferably, the belt conveyor assembly includes two transmission blocks and two driving blocks respectively arranged at the ends of the box body, and the opposite surfaces of the two transmission blocks and the two driving blocks are rotatably connected with the transmission rod and the driving rod respectively, and also includes two transmission wheels and two driving wheels respectively fixed on the transmission rod and the driving rod, and a conveying belt arranged between the transmission wheel and the driving wheel on the same side, a plurality of clamping devices are arranged on the opposite surfaces of the two conveying belts, and the conveying belt can slide within a plurality of mounting sleeves on the same side; it also includes a driving motor arranged on the outer wall of the box body, and the output end of the driving motor passes through the box body and the driving block and is fixedly connected to the driving rod.

[0009] Preferably, two sets of adaptive adjustment structures are provided at the end of the box body close to the transmission block, which are used for adaptive adjustment of the deflection of the two conveyor belts; each set of the adaptive adjustment structures includes a mounting frame fixed to the end of the box body, and the transmission block can move inside the mounting groove opened on the mounting frame; it also includes connecting blocks respectively fixed to the ends of the mounting frame, and a second spring is connected between the connecting block and the side wall of the corresponding transmission block for resetting the corresponding transmission block.

[0010] Preferably, each group of the clamping devices includes a first electromagnetic block respectively arranged at the opposite ends of the two conveyor belts, and a support plate fixed to the opposite ends of the two first electromagnetic blocks, and also includes two second electromagnetic blocks arranged on the support plate and telescopically movable. The second electromagnetic blocks and the first electromagnetic blocks magnetically repel each other. When the clamping device is energized, the two second electromagnetic blocks can be used to clamp the PCB board, and a first spring is connected between each second electromagnetic block and the corresponding first electromagnetic block for resetting the second electromagnetic block after power is off.

[0011] Preferably, each set of camera acquisition components includes a mounting part fixed to the side wall of the mounting frame, and a rotatable transmission roller arranged on the side wall of the mounting part, and a number of cameras are arranged on the side wall of the transmission roller for photographing and collecting conditions such as tin connection, insufficient tin, empty soldering, missing parts, and reversed parts of the PCB board; and also includes a second micro motor arranged on the side wall of the mounting part, and the output shaft of the second micro motor passes through the mounting part and is fixedly connected to the transmission roller.

[0012] Preferably, a pressurizing device is further provided on the corresponding connecting rod transmission assembly on the mounting frame for pressurizing test of the PCB board; each group of the pressurizing devices includes a connecting rod fixed on the side wall of the mounting frame near the first micro motor, and a pressure block arranged on the connecting rod near the clamping device.

[0013] Preferably, a heating strip is further provided at the inner bottom of the box body for heating the plurality of PCB boards transported to the inner bottom of the box body.

[0014] Preferably, the conveyor belt arranged between the two mounting sleeves where each connecting rod transmission assembly is located is distributed in an inverted V shape.

[0015] Preferably, arc-shaped plates are respectively provided between the mounting sleeves of adjacent connecting rod transmission assemblies.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention provides several connecting rod transmission assemblies. When each group of PCB boards on the belt conveyor assembly is sequentially conveyed to the position of the several connecting rod transmission assemblies, the structural characteristics of the connecting rod transmission assemblies can make the several connecting rod transmission assemblies present different angles. As a result, when the group of PCB boards is deflected at different angles in sequence, the various angular states of each group of components and PCB boards on the belt conveyor assembly can be detected and obtained in conjunction with the several camera acquisition assemblies, thereby greatly improving work efficiency. In addition, the multi-angle detection of the status of components and PCB boards further improves the detection accuracy.

[0018] 2. As another embodiment of the present invention, a pressure-applying device is provided to test the pressure-bearing capacity of a PCB board. Since the PCB board deflects at different angles in sequence, the pressure exerted on it by the plurality of pressure blocks is different, thereby further improving the accuracy of the PCB board pressure detection.

[0019] 3. The present invention heats the PCBs in the lower portion of the box 1 by means of the heating strips 29 provided at the bottom of the box 1, thereby changing the external environment of the PCBs. When the PCBs are transported to the upper and lower portions of the box 1, the effect of temperature on the welding conditions between the PCBs and the components 34, as well as the pressure on the PCBs, can be investigated. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 for Figure 1 Schematic diagram of the disassembled structure;

[0022] Figure 3 for Figure 2 A schematic diagram of a three-dimensional structure from another perspective;

[0023] Figure 4 for Figure 2 A schematic diagram of the front structure of FIG.

[0024] Figure 5 It is a partial enlarged structural diagram of the connecting rod transmission assembly;

[0025] Figure 6 It is a partial enlarged structural schematic diagram of the pressurizing device;

[0026] Figure 7 Schematic diagram of the installation structure of the clamping device and the PCB board;

[0027] Figure 8 It is a schematic diagram of the enlarged structure of the camera acquisition component;

[0028] Figure 9 This is an enlarged structural diagram of point A of the present invention;

[0029] Figure 10 This is an enlarged structural diagram of the installation position of the curved plate.

[0030] In the figure: 1. box body; 2. drive motor; 3. mounting frame; 4. transmission block; 5. transmission rod; 6. transmission wheel; 8. roller; 9. mounting seat; 10. conveyor belt; 11. second spring; 12. connecting block; 14. transmission belt; 15. first mounting rod; 16. second mounting rod; 17. third mounting rod; 18. mounting sleeve; 19. first micro motor; 20. drive block; 21. drive wheel; 22. mounting frame; 23. mounting piece; 24. second micro motor; 25. transmission roller; 26. camera; 27. connecting rod; 28. pressure block; 29. ​​heating strip; 30. curved plate; 31. first electromagnetic block; 32. first spring; 33. second electromagnetic block; 34. component; 35. support plate; 36. drive rod. DETAILED DESCRIPTION

[0031] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention. The following describes various embodiments of the present invention in detail with reference to the accompanying drawings.

[0032] Example 1

[0033] See also Figures 1 to 10 The present invention preferably provides a technical solution: an SMT patch detection device, comprising: a box 1; and a belt conveyor assembly arranged inside the box 1, and a plurality of clamping devices are arranged on opposite sides of the belt conveyor assembly for limiting and clamping the PCB board; it also includes a plurality of connecting rod transmission assemblies symmetrically arranged at the top and bottom of the box 1, and the connecting rod transmission assemblies can be used for angular deflection of the PCB board where the belt conveyor assembly is located; a mounting frame 22 is also provided in the middle of the box 1, and a plurality of camera acquisition assemblies are arranged on the mounting frame 22, and each camera acquisition assembly corresponds to a shooting position of the PCB board.

[0034] After the PCB board and the component 34 are SMT mounted, the PCB board can be clamped and limited by the provided clamping device, and due to the structural characteristics of the clamping device, several PCB boards of different sizes can be limited in the middle of the clamping device, such as Figure 7 As shown, it is convenient for the camera to shoot, and cooperates with several connecting rod transmission components symmetrically arranged on the top and bottom of the box body 1 to deflect the PCB board on the belt conveyor component. Figure 3As shown, at this time, the camera acquisition component can capture and shoot the PCB board at various angles, and then understand the conditions of tin connection, insufficient tin, empty soldering, missing parts, reversed parts, etc. of the PCB board. This process is carried out by setting up several connecting rod transmission components. When each group of PCB boards on the belt conveyor component is sequentially conveyed to the position of several connecting rod transmission components, the structural characteristics of the connecting rod transmission components can make the several connecting rod transmission components present different angles, and then make the group of PCB boards deflect at different angles in turn. In conjunction with several camera acquisition components, the various angular states of each group of components 34 and PCB boards on the belt conveyor component can be detected and obtained in turn, which greatly improves work efficiency. In addition, the multi-angle detection of the status of the components 34 and the PCB boards further improves the detection accuracy.

[0035] Furthermore, each group of connecting rod transmission components includes a mounting base 9 fixed to the inner wall of the box body 1, and rollers 8 arranged at both ends of the horizontal section of the mounting base 9 through a first pin and a second pin respectively and rotatably connected to the mounting base 9, and also includes a transmission belt 14 sleeved on the two rollers 8; a first mounting rod 15 is rotatably connected to the first pin, and a second mounting rod 16 is rotatably connected to the end of the first mounting rod 15 away from the roller 8; the side walls of the first mounting rod 15 and the second mounting rod 16 are respectively fixed with mounting sleeves 18, which are used to adjust the operating angle of the belt conveyor assembly when the first mounting rod 15 and the second mounting rod 16 are deflected; it also includes a third mounting rod 17 fixed to the second pin, and the end of the third mounting rod 17 away from the second pin is rotatably connected to the middle part of the second mounting rod 16 through the mounting shaft; a first micro motor 19 is also provided on the side wall of the end of the mounting base 9 close to the first pin, and the first micro motor 19 passes through the through hole opened on the mounting base 9 and is fixedly connected to the first pin.

[0036] Since one end of the first mounting rod 15 is rotatably connected to the first pin, the other end is rotatably connected to the second mounting rod 16, and the middle of the second mounting rod 16 is rotatably connected to the third mounting rod 17, and the third mounting rod 17 is fixed to the second pin. Figure 5As shown, when the first micro motor 19 runs and drives the first pin shaft to run, the roller 8 fixed on the first pin shaft rotates, and through the action of the transmission belt 14, the other roller 8 can be driven to rotate, thereby driving the third mounting rod 17 fixed on the pin shaft where the other roller 8 is located to rotate, and the third mounting rod 17 is rotatably connected to the middle part of the second mounting rod 16, so that the second mounting rod 16 can be deflected. At the same time, when the first micro motor 19 drives the first pin shaft to rotate, since the first mounting rod 15 is rotatably connected to the pin shaft, the first mounting rod 15 can also be deflected by the power brought by the rotation of the second mounting rod 16, so that the mounting sleeves 18 respectively installed on the side walls of the first mounting rod 15 and the second mounting rod 16 can be deflected respectively, and by controlling the operation of the first micro motor 19, the deflection angles of the two mounting sleeves 18 can be adjusted.

[0037] Furthermore, the belt conveyor assembly includes two transmission blocks 4 and two drive blocks 20 respectively arranged at the ends of the box body 1, and the opposite surfaces of the two transmission blocks 4 and the two drive blocks 20 are respectively rotatably connected with the transmission rod 5 and the drive rod 36, and also includes two transmission wheels 6 and two drive wheels 21 respectively fixed on the transmission rod 5 and the drive rod 36, and a conveyor belt 10 arranged between the transmission wheel 6 and the drive wheel 21 on the same side, a number of clamping devices are arranged on the opposite surfaces of the two conveyor belts 10, and the conveyor belt 10 can be limitedly slid inside a number of mounting sleeves 18 on the same side; it also includes a drive motor 2 arranged on the outer wall of the box body 1, and the output end of the drive motor 2 passes through the box body 1 and the drive block 20 and is fixedly connected to the drive rod 36.

[0038] By driving the driving motor 2, the two conveyor belts 10 can be driven to rotate, thereby driving the several clamping devices between the two conveyor belts 10 to operate, such as Figure 3 As shown, since the conveyor belt 10 can slide within the plurality of mounting sleeves 18 on the same side, as shown in FIG. Figure 2 As shown, by adjusting the output power of the first micro motor 19 where the several connecting rod transmission components are located, the several mounting sleeves 18 can be made to present different deflection angles, so that the conveyor belt 10 can present different angles inside the several mounting sleeves 18, and then each clamping device can present different deflection angles when the belt conveyor assembly runs to different connecting rod transmission assembly positions, further making the PCB board present different angles, so that the several camera acquisition components can sequentially capture different states of the PCB and the component 34.

[0039] Furthermore, two sets of adaptive adjustment structures are provided at the end of the box body 1 near the transmission block 4, which are used for adaptive adjustment of the deflection of the two conveyor belts 10; each set of adaptive adjustment structures includes a mounting frame 3 fixed to the end of the box body 1, and the transmission block 4 can move inside the mounting groove opened on the mounting frame 3; it also includes connecting blocks 12 respectively fixed to the ends of the mounting frame 3, and a second spring 11 is connected between the connecting block 12 and the side wall of the corresponding transmission block 4 for resetting the corresponding transmission block 4.

[0040] like Figure 10 As shown, through the action of the adaptive adjustment component, when the conveyor belt 10 is deflected at different angles under the action of the corresponding connecting rod transmission component, the transmission block 4 can slide on the mounting frame 3 and perform adaptive adjustment, so that the conveyor belt 10 can be flexibly deflected.

[0041] Furthermore, each set of clamping devices includes a first electromagnetic block 31 respectively arranged at the opposite ends of the two conveyor belts 10, and a support plate 35 fixed to the opposite ends of the two first electromagnetic blocks 31, and also includes two second electromagnetic blocks 33 arranged on the support plate 35 and retractable and movable. The second electromagnetic blocks 33 and the first electromagnetic blocks 31 magnetically repel each other. When the clamping device is energized, the two second electromagnetic blocks 33 can be used to clamp the PCB board, and a first spring 32 is connected between each second electromagnetic block 33 and the corresponding first electromagnetic block 31 for resetting the second electromagnetic block 33 after power is off.

[0042] Since the first electromagnetic block 31 and the second electromagnetic block 33 repel each other by magnetic force, when the PCB is placed on the clamping device where the first connecting rod transmission assembly is located, Figure 2 As shown in the first connecting rod transmission assembly at the lower left, multiple groups of PCB boards are placed in sequence through the action of the belt conveyor assembly. At this time, the clamping device is energized to make the two second electromagnetic blocks 33 approach each other, so that the PCB board with the component 34 attached can be clamped. By controlling the current intensity to keep it consistent, PCB boards of different sizes can always be clamped in the middle of the clamping device, as shown in FIG. Figure 7 As shown, it is convenient for the camera to capture and further improve the accuracy of detection.

[0043] Furthermore, each set of camera acquisition components includes a mounting part 23 fixed to the side wall of the mounting frame 22, and a rotatable transmission roller 25 set on the side wall of the mounting part 23, and a number of cameras 26 are set on the side wall of the transmission roller 25 for photographing and collecting the PCB board's tin connection, insufficient tin, empty soldering, missing parts, reversed parts, etc.; it also includes a second micro motor 24 set on the side wall of the mounting part 23, and the output shaft of the second micro motor 24 passes through the mounting part 23 and is fixedly connected to the transmission roller 25.

[0044] By setting up several camera acquisition components, and the camera acquisition components are consistent with the measurement position of the PCB board, such as Figure 2 As shown, each group of PCB boards can be photographed in sequence, and several cameras 26 are set, such as Figure 8 As shown, by cooperating with the rotatable transmission roller 25 and driving the second micro motor 24, the shooting angles of the plurality of cameras 26 can be adjusted, and the welding shooting positions of the PCB board and the component 34 can be further photographed in all directions, thereby further improving the accuracy of the detection.

[0045] Example 2

[0046] As another embodiment of the present invention, a pressurizing device is further provided on the corresponding connecting rod transmission assembly on the mounting frame 22 for pressurizing test of the PCB board; each set of pressurizing devices includes a connecting rod 27 fixed on the side wall of the mounting frame 22 near the first micro motor 19, and a pressure block 28 arranged on the connecting rod 27 near the clamping device.

[0047] By setting a pressure device, such as Figure 6 As shown, when each set of PCB boards is transported to Figure 6 As shown in the figure, since the several connecting rod transmission assemblies drive the conveyor belt 10 to deflect at different angles, when the PCB board is transported to different connecting rod transmission assemblies, the PCB board is deflected due to the action of the connecting rod transmission assemblies, and the pressure block 28 can apply pressure to the PCB board, thereby testing its pressure bearing capacity. Moreover, since the PCB board deflects at different angles in sequence, the pressures exerted on it by the several pressure blocks 28 are different, further improving the accuracy of the PCB board pressure detection.

[0048] Example 3

[0049] As another embodiment of the present invention, a heating strip 29 is further provided at the inner bottom of the box 1 for heating a plurality of PCB boards transported to the inner bottom of the box 1 .

[0050] like Figure 4 、 Figure 5 As shown, the heating strips 29 provided at the bottom of the box 1 can heat the PCB boards at the bottom of the box 1, thereby changing the external environment of the PCB boards. When the PCB boards are transported to the upper and lower parts of the box 1, the influence of temperature on the welding condition between the PCB boards and the components 34, as well as the pressure condition of the PCB boards can be investigated.

[0051] Example 4

[0052] As another embodiment of the present invention, the conveyor belt 10 disposed between the two mounting sleeves 18 where each connecting rod transmission assembly is located is distributed in an inverted V shape.

[0053] like Figure 4As shown, the conveyor belt 10 on each group of connecting rod transmission components is distributed in an inverted V shape, and the mounting sleeve 18 between adjacent connecting rod transmission components is V-shaped, which further provides all-round illumination of the PCB board and the welding position of the component 34, and the position setting of the camera acquisition component is set, that is, it is placed in the middle of the adjacent connecting rod transmission components. Here, there are preferably two groups of cameras 26. The camera 26 on one side can shoot the pressure state of the PCB board on one group of connecting rod transmission components, and the camera 26 on the other side can simultaneously shoot the state of another group of symmetrically distributed PCB boards and components 34, thereby greatly improving work efficiency.

[0054] Furthermore, arc-shaped plates 30 are respectively provided between the mounting sleeves 18 of adjacent connecting rod transmission assemblies.

[0055] The arc-shaped plate 30 is provided to facilitate the V-shaped distribution of the conveyor belt 10 between the two mounting sleeves 18 where the adjacent connecting rod transmission assemblies are located.

[0056] In the present invention, unless otherwise expressly specified or limited, the terms "install," "connect," "connect," "fix," and the like should be understood in a broad sense. For example, they may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. There are various methods for removable installation, such as plug-in and snap-fit ​​connections, or bolt connections.

[0057] The above is a clear and complete description of the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. In addition, all the connection / connection relationships mentioned in the text do not refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation.

[0058] The specific description of the present invention in the above embodiments is only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Technical engineers in this field may make some non-essential improvements and adjustments to the present invention based on the contents of the above invention, which fall within the scope of protection of the present invention.

Claims

1. SMT patch detection device, characterized in that, include: Box (1); and a belt conveyor assembly arranged inside the box (1), wherein opposite surfaces of the belt conveyor assembly are provided with a plurality of clamping devices for limiting and clamping the PCB board; It also includes a plurality of connecting rod transmission assemblies symmetrically arranged on the top and bottom of the box body (1), and the connecting rod transmission assemblies are used for angular deflection of the PCB board where the belt conveyor assembly is located; The middle portion of the box (1) is further provided with a mounting frame (22), and a plurality of camera acquisition components arranged on the mounting frame (22), and each of the camera acquisition components corresponds one-to-one to a shooting position of the PCB board; The belt conveyor assembly comprises two transmission blocks (4) and two driving blocks (20) respectively arranged at the ends of the box body (1), and the opposite surfaces of the two transmission blocks (4) and the two driving blocks (20) are rotatably connected to the transmission rod (5) and the driving rod (36), and also comprises two transmission wheels (6) and two driving wheels (21) respectively fixed on the transmission rod (5) and the driving rod (36), and a conveying belt (10) sleeved between the transmission wheel (6) and the driving wheel (21) on the same side, a plurality of clamping devices are arranged on the opposite surfaces of the two conveying belts (10), and the conveying belt (10) can be limitedly slid inside a plurality of mounting sleeves (18) on the same side; It also includes a driving motor (2) arranged on the outer wall of the box (1), and the output end of the driving motor (2) passes through the box (1) and the driving block (20) and is fixedly connected to the driving rod (36); The end of the box (1) close to the transmission block (4) is also provided with two sets of adaptive adjustment structures for adaptive adjustment of the deflection of the two conveyor belts (10); Each set of the adaptive adjustment structures includes a mounting frame (3) fixed to the end of the box (1), and a transmission block (4) is movable within a mounting slot provided on the mounting frame (3); It also includes connecting blocks (12) respectively fixed to the ends of the installation frame (3), and a second spring (11) is connected between the connecting blocks (12) and the side walls of the corresponding transmission blocks (4) for resetting the corresponding transmission blocks (4).

2. The SMT patch detection device according to claim 1, characterized in that: Each set of the connecting rod transmission components includes a mounting seat (9) fixed to the inner wall of the box body (1), and rollers (8) respectively arranged at two ends of the horizontal section of the mounting seat (9) through a first pin and a second pin and rotatably connected to the mounting seat (9), and also includes a transmission belt (14) sleeved on the two rollers (8); A first mounting rod (15) is rotatably connected to the first pin shaft, and a second mounting rod (16) is rotatably connected to the end of the first mounting rod (15) away from the roller (8); The side walls of the first mounting rod (15) and the second mounting rod (16) are respectively fixed with mounting sleeves (18), which are used to adjust the running angle of the belt conveyor assembly when the first mounting rod (15) and the second mounting rod (16) are deflected; It also includes a third mounting rod (17) fixed on the second pin shaft, and the end of the third mounting rod (17) away from the second pin shaft is rotatably connected to the middle part of the second mounting rod (16) through the mounting shaft; A first micro motor (19) is also provided on the side wall of the end of the mounting seat (9) close to the first pin shaft, and the first micro motor (19) passes through a through hole provided on the mounting seat (9) and is fixedly connected to the first pin shaft.

3. The SMT patch detection device according to claim 1, characterized in that: Each group of the clamping devices comprises a first electromagnetic block (31) respectively arranged at the opposite ends of the two conveyor belts (10), and a support plate (35) fixed at the opposite ends of the two first electromagnetic blocks (31), and also comprises two second electromagnetic blocks (33) arranged on the support plate (35) and capable of telescopic movement, the second electromagnetic blocks (33) and the first electromagnetic blocks (31) magnetically repel each other, when the clamping device is energized, the two second electromagnetic blocks (33) are used to clamp the PCB board, and a first spring (32) is connected between each second electromagnetic block (33) and the corresponding first electromagnetic block (31) for resetting the second electromagnetic block (33) after power is cut off.

4. The SMT patch detection device according to claim 1, characterized in that: Each set of camera collection components includes a mounting member (23) fixed to the side wall of the mounting frame (22), and a rotatable transmission roller (25) arranged on the side wall of the mounting member (23), and a plurality of cameras (26) are arranged on the side wall of the transmission roller (25) for photographing and collecting tin connection, insufficient tin, empty soldering, missing parts, and reversed parts of the PCB board; It also includes a second micro motor (24) arranged on the side wall of the mounting member (23), and the output shaft of the second micro motor (24) passes through the mounting member (23) and is fixedly connected to the transmission roller (25).

5. The SMT patch detection device according to claim 1, characterized in that: The mounting frame (22) is also provided with a pressurizing device corresponding to the connecting rod transmission assembly for pressurizing testing of the PCB board; Each group of the pressurizing devices includes a connecting rod (27) fixed to the side wall of the mounting frame (22) close to the first micro motor (19), and a pressing block (28) arranged on the connecting rod (27) close to the clamping device.

6. The SMT patch detection device according to claim 1, characterized in that: The inner bottom of the box (1) is also provided with a heating strip (29) for heating a plurality of PCB boards transported to the inner bottom of the box (1).

7. The SMT patch detection device according to claim 2, characterized in that: The conveying belt (10) arranged between the two mounting sleeves (18) where each connecting rod transmission assembly is located is distributed in an inverted V shape.

8. The SMT patch detection device according to claim 1, characterized in that: Arc plates (30) are respectively arranged between the mounting sleeves (18) of adjacent connecting rod transmission assemblies.

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