Maintenance all-in-one machine

Abstract

The invention discloses a maintenance all-in-one machine, and the machine comprises an AOI detection module which is used for carrying out the visual inspection of a circuit board; the laser welding module is used for carrying out laser welding maintenance on the circuit board; the control module is configured to control the AOI detection module to perform visual detection on the circuit board; recording the number of visual detection times; if the number of visual detection times does not reach the set number of times and visual detection is not passed, the laser welding module is controlled to maintain the circuit board, and after maintenance is finished, the AOI detection module is controlled again to conduct visual detection on the circuit board till the number of visual detection times reaches the set number of times or visual detection is passed; and if the visual detection times reach the set times and the visual detection is still not passed, judging that the circuit board is a defective product. According to the maintenance all-in-one machine, manual detection and welding are not needed, detection and maintenance are convenient, and the technical problems that in the prior art, circuit board detection and maintenance are difficult, and efficiency is low are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of circuit board detection, and in particular relates to an integrated maintenance machine. Background Art

[0002] Quality control is critical in the electronics manufacturing and assembly process. Traditionally, defects on electronic components or PCBs are detected manually, but manual inspection methods are time-consuming, labor-intensive and prone to errors.

[0003] In order to improve efficiency and accuracy, the automatic optical inspection system (AOI) was developed. The AOI system uses optical technology and image processing algorithms to automatically scan and analyze the objects to be inspected. After the AOI system detects defects, it needs to be repaired.

[0004] If manual welding is used for repair, it will not only increase the labor cost, but also may lead to incomplete repair or new errors. Manual welding is easy to cause cold welding or false welding because the temperature of the soldering iron tip is difficult to accurately control; it is also easy to make the solder joint brittle, reduce the strength, or even the pad fall off and make the circuit board scrapped. In addition, the quality of the solder joint is easily affected by the operator's knowledge, skills and emotions, and it is difficult to control.

[0005] If wave soldering equipment is used to replace manual soldering, in the actual application of wave soldering, the full-board spraying of flux and the generation of tin slag will bring higher operating costs; especially in lead-free soldering, because the price of lead-free solder is more than three times that of lead solder, the operating cost caused by the generation of tin slag increases. In addition, lead-free solder continuously melts the copper on the pad, and the solder composition in the tin tank will change over time, which requires regular addition of pure tin and expensive silver to solve. The residual flux in production will remain in the wave soldering transmission system, and the generated tin slag needs to be removed regularly, which brings users more complicated equipment maintenance and maintenance work. When soldering some circuit boards, because the designer did not take into account the actual production situation, no matter what wave soldering parameters are set and various fixtures are used, the welding effect will always be difficult to be completely satisfactory. For example, some key parts always have defects such as poor tin penetration or bridging. After wave soldering, re-soldering has to be performed, which reduces the long-term reliability of the product.

[0006] Therefore, current maintenance equipment still requires manual work to repair or re-repair the circuit board, which not only leads to low production efficiency, but also easily leads to defective products. Summary of the invention

[0007] The invention provides an integrated maintenance machine, which solves the technical problems of difficult and low efficiency circuit board maintenance in the prior art.

[0008] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0009] All-in-one maintenance machine, including:

[0010] AOI inspection module, which is used for visual inspection of circuit boards;

[0011] Laser welding module, which is used for laser welding repair of circuit boards;

[0012] A control module, configured to: control the AOI inspection module to perform visual inspection on the circuit board; and record the number of visual inspections;

[0013] If the number of visual inspections does not reach the set number and the visual inspection fails, the laser welding module is controlled to repair the circuit board. After the repair is completed, the AOI inspection module is controlled again to perform visual inspection on the circuit board until the number of visual inspections reaches the set number or the visual inspection passes;

[0014] If the number of visual inspections reaches the set number of times and the visual inspection still fails, the circuit board is determined to be a defective product.

[0015] In some embodiments of the present application, the integrated maintenance machine further includes a plurality of board delivery modules, the plurality of board delivery modules are arranged in parallel and at intervals; the board delivery modules are used to receive and drive the circuit board to move;

[0016] The control module is further configured to: detect the working state of each of the board delivery modules; the working state includes an idle state and a busy state;

[0017] Control the transplanter to move the circuit board to the board delivery module which is in an idle state.

[0018] In some embodiments of the present application, the laser welding module comprises:

[0019] A laser welding gun, used for laser welding repair of the circuit board;

[0020] A tin feeding nozzle, which is used to provide welding wire to the laser welding gun;

[0021] A positioning and identification module, which is used to photograph the mark points on the circuit board for positioning and identification;

[0022] The control module is also configured to control the welding finishing mode of the laser welding gun and the wire feeding amount of the tin feeding nozzle according to the visual inspection result.

[0023] In some embodiments of the present application, the integrated maintenance machine further includes:

[0024] Bottom platform;

[0025] A support portion, the bottom of which is connected to the bottom platform;

[0026] A first XY driving module, which is installed on the supporting part and is used to drive the AOI detection module to move along the X-axis direction and the Y-axis direction;

[0027] A second XY driving module, which is mounted on the bottom platform and is used to drive the laser welding module to move along the X-axis direction and the Y-axis direction;

[0028] The board feeding module is installed on the supporting part; the length direction of the board feeding module is parallel to the X-axis direction, and is located above the AOI inspection module and the laser welding module.

[0029] In some embodiments of the present application, the support portion includes a first support seat and a second support seat;

[0030] The first support seat is parallel to the second support seat and arranged at intervals, and the length direction of the first support seat and the length direction of the second support seat are parallel to the Y-axis direction; the bottom of the first support seat and the bottom of the second support seat are connected to the bottom platform;

[0031] One end of the plate delivery module is connected to the top of the first support seat, and the other end of the plate delivery module is connected to the top of the second support seat;

[0032] The first XY driving module includes a first X-axis moving mechanism and two first Y-axis moving mechanisms; the AOI detection module is installed on the first X-axis moving mechanism; the first X-axis moving mechanism drives the AOI detection module to move along the X-axis direction;

[0033] One end of the first X-axis moving mechanism is mounted on one of the first Y-axis moving mechanisms; one of the first Y-axis moving mechanisms is mounted on the top of the first supporting seat;

[0034] The other end of the first X-axis moving mechanism is mounted on another first Y-axis moving mechanism; and the other first Y-axis moving mechanism is mounted on the top of the second supporting seat;

[0035] The two first Y-axis moving mechanisms drive the first X-axis moving mechanism to move along the Y-axis direction;

[0036] The second XY driving module includes a second X-axis moving mechanism and a second Y-axis moving mechanism; the laser welding module is installed on the second X-axis moving mechanism; the second X-axis moving mechanism drives the laser welding module to move along the X-axis direction;

[0037] The second X-axis moving mechanism is installed on the second Y-axis moving mechanism; the second Y-axis moving mechanism drives the second X-axis moving mechanism to move along the Y-axis direction; the second Y-axis moving mechanism is installed on the bottom platform.

[0038] In some embodiments of the present application, the first X-axis moving mechanism includes a first X-axis motor, a first X-axis lead screw, a first X-axis guide rail, and a first X-axis slider; the length direction of the first X-axis guide rail is parallel to the X-axis direction; the first X-axis lead screw is parallel to the first X-axis guide rail; the first X-axis lead screw is connected to the first X-axis slider, the first X-axis motor drives the first X-axis lead screw to rotate, and the first X-axis lead screw drives the first X-axis slider to slide along the first X-axis guide rail; the first X-axis slider is connected to the AOI detection module;

[0039] The first Y-axis moving mechanism includes a first Y-axis motor, a first Y-axis lead screw, a first Y-axis guide rail, and a first Y-axis slider; the length direction of the first Y-axis guide rail is parallel to the Y-axis direction; the first Y-axis lead screw is parallel to the first Y-axis guide rail; the first Y-axis lead screw is connected to the first Y-axis slider, the first Y-axis motor drives the first Y-axis lead screw to rotate, and the first Y-axis lead screw drives the first Y-axis slider to slide along the first Y-axis guide rail;

[0040] The first Y-axis guide rails of the two first Y-axis moving mechanisms are arranged in parallel and at intervals;

[0041] One end of the first X-axis guide rail is connected to a first Y-axis slider of one of the first Y-axis moving mechanisms;

[0042] The other end of the first X-axis guide rail is connected to a first Y-axis slider of another first Y-axis moving mechanism.

[0043] In some embodiments of the present application, the second X-axis moving mechanism includes a second X-axis motor, a second X-axis screw, a second X-axis guide rail, and a second X-axis slider; the length direction of the second X-axis guide rail is parallel to the X-axis direction; the second X-axis screw is parallel to the second X-axis guide rail; the second X-axis screw is connected to the second X-axis slider, the second X-axis motor drives the second X-axis screw to rotate, and the second X-axis screw drives the second X-axis slider to slide along the second X-axis guide rail; the second X-axis slider is connected to the laser welding module;

[0044] Two second Y-axis moving mechanisms are provided, each of which comprises a second Y-axis motor, a second Y-axis screw, a second Y-axis guide rail, and a second Y-axis slider; the length direction of the second Y-axis guide rail is parallel to the Y-axis direction; the second Y-axis screw is parallel to the second Y-axis guide rail; the second Y-axis screw is connected to the second Y-axis slider, the second Y-axis motor drives the second Y-axis screw to rotate, and the second Y-axis screw drives the second Y-axis slider to slide along the second Y-axis guide rail;

[0045] The second Y-axis guide rails of the two second Y-axis moving mechanisms are arranged in parallel and at intervals;

[0046] One end of the second X-axis guide rail is connected to a second Y-axis slider of one of the second Y-axis moving mechanisms;

[0047] The other end of the second X-axis guide rail is connected to a second Y-axis slider of another second Y-axis moving mechanism.

[0048] In some embodiments of the present application, the board delivery module includes two board delivery tracks that are arranged in parallel and at intervals, and the two board delivery tracks correspond to two sides of the circuit board.

[0049] In some embodiments of the present application, the plate delivery track includes:

[0050] Base plate;

[0051] A guide wheel assembly, comprising a plurality of guide wheels, the plurality of guide wheels being arranged at intervals along the length direction of the bottom plate; the guide wheels being rotatably connected to the bottom plate, and the rotation axis of the guide wheels being parallel to the vertical direction;

[0052] A driving motor is used to drive the guide wheel to rotate.

[0053] In some embodiments of the present application, the plate delivery track further includes a pressing module, and the pressing module includes:

[0054] A pressing plate assembly, which is used for pressing a circuit board;

[0055] A pressing cylinder, whose cylinder body is fixed on the base plate; and whose piston rod is connected with the pressing plate assembly to drive the pressing plate assembly to move up and down.

[0056] Compared with the prior art, the advantages and positive effects of the present invention are: the integrated inspection and repair machine of the present invention uses the AOI inspection module to perform visual inspection on the circuit board, and uses the laser welding module to perform laser welding repair on the circuit board, without the need for manual inspection and welding, and is convenient for inspection and repair, and can accurately detect defects in the circuit board, and the laser welding repair quality is high, which improves the inspection efficiency of the circuit board and the welding repair efficiency, improves the production efficiency, and solves the technical problems of the difficulty and low efficiency of circuit board inspection and repair in the prior art. Moreover, by performing visual inspection and laser welding repair multiple times until the number of visual inspections reaches the set number or the visual inspection passes, the defective rate of the circuit board can be reduced.

[0057] Other features and advantages of the present invention will become more apparent after reading the detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0059] Figure 1 It is a structural schematic diagram of an embodiment of the integrated maintenance machine proposed by the present invention;

[0060] Figure 2 yes Figure 1 Exploded diagram of

[0061] Figure 3 yes Figure 1 A schematic diagram of the central maintenance machine from another angle;

[0062] Figure 4 is a structural schematic diagram of the first XY drive module;

[0063] Figure 5 yes Figure 4 Exploded diagram of

[0064] Figure 6 is a schematic diagram of the structure of the second XY drive module;

[0065] Figure 7 It is a structural schematic diagram of the plate delivery track;

[0066] Figure 8 is a schematic diagram of the protective cover and the base plate;

[0067] Fig. 9 This is a schematic diagram of the installation of the guide wheel group and the base plate;

[0068] Fig.10It is an exploded view of the plate delivery track;

[0069] Fig.11 yes Fig.10 A partial enlarged view of

[0070] Fig.12 It is a structural schematic diagram of the compression module;

[0071] Fig.13 is a structural schematic diagram of a pressure plate assembly;

[0072] Fig.14 yes Fig.13 Exploded diagram of

[0073] Fig.15 This is a structural diagram of the compression module from another angle;

[0074] Fig.16 yes Fig.15 Exploded view of the mid-guide assembly;

[0075] Fig.17 is a structural schematic diagram of the stop module;

[0076] Fig.18 This is an exploded view of the stop module.

[0077] Reference numerals:

[0078] 100, bottom platform; 200, support portion; 210, first support seat; 220, second support seat;

[0079] 300, AOI inspection module;

[0080] 400, laser welding module; 410, laser welding gun; 420, tin delivery nozzle; 430, positioning identification module;

[0081] 500, first XY drive module; 510, first X-axis moving mechanism; 511, first X-axis motor; 512, first X-axis lead screw; 513, first X-axis guide rail; 514, first X-axis slider; 520, first Y-axis moving mechanism; 521, first Y-axis motor; 522, first Y-axis lead screw; 523, first Y-axis guide rail; 524, first Y-axis slider;

[0082] 600, second XY driving module; 610, second X-axis moving mechanism; 620, second Y-axis moving mechanism;

[0083] 700, plate delivery track; 710, protective cover; 720, bottom plate; 730, guide wheel; 740, drive motor; 750, support wheel; 760, synchronous pulley group; 761, synchronous wheel; 762, synchronous belt; 770, clamping module; 771, pressing plate assembly; 771-1, friction sleeve; 771-1-1, vertical cavity; 771-1-2, positioning hole; 771-2, pressing plate; 771-2-1, accommodating cavity; 771-2-2, long hole; 771-3, spring; 771-4, guide shaft; 771-5, positioning pin; 772, clamping cylinder; 773, cylinder connecting piece; 774, guide assembly; 774-1, guide rail mounting piece; 774-2, guide rail; 774-3, slider; 774-4, slider mounting piece; 780, stop assembly; 781, stop cylinder; 782, slide rail; 783, blocking block. DETAILED DESCRIPTION

[0084] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0085] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0086] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the feature. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0087] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0088] The integrated maintenance machine of this embodiment includes an AOI detection module 300, a laser welding module 400, a control module, etc. Figures 1 to 18 shown.

[0089] The AOI inspection module 300 is used to perform visual inspection on the circuit board. The AOI inspection module 300 first captures an image of the circuit board, and then uses image processing technology to analyze the image data to detect the location and type of circuit board defects, so as to accurately identify and judge defects and problems on the circuit board.

[0090] The laser welding module 400 is used for laser welding repair of circuit boards.

[0091] The control module is the control center of the entire maintenance machine, which is used to control the operation of the AOI inspection module 300 and the laser welding module 400. The AOI inspection module 300 sends the visual inspection results to the control module, and the control module controls the laser welding module 400 to repair the circuit board according to the visual inspection results.

[0092] A control module configured to:

[0093] Control the AOI inspection module to perform visual inspection on the circuit board; and record the number of visual inspections;

[0094] If the number of visual inspections does not reach the set number and the visual inspection fails, the laser welding module is controlled to repair the circuit board. After the repair is completed, the AOI inspection module is controlled again to perform visual inspection on the circuit board until the number of visual inspections reaches the set number or the visual inspection passes;

[0095] If the number of visual inspections reaches the set number (such as 3 times) and the visual inspection still fails, the circuit board is determined to be defective.

[0096] If the visual inspection passes when the number of visual inspections is less than or equal to the set number of times, the circuit board is determined to be a qualified product.

[0097] The integrated inspection and repair machine of this embodiment uses an AOI inspection module to perform visual inspection on the circuit board, and uses a laser welding module to perform laser welding repair on the circuit board. It does not require manual inspection and welding, and is convenient for inspection and repair. It can accurately detect defects in the circuit board, and the laser welding repair quality is high, which improves the inspection efficiency of the circuit board and the welding repair efficiency, improves production efficiency, and solves the technical problems of difficult and inefficient inspection and repair of circuit boards in the prior art. Moreover, by performing visual inspection and laser welding repair multiple times until the number of visual inspections reaches the set number or the visual inspection passes, the defective rate of the circuit board can be reduced.

[0098] The integrated maintenance machine of this embodiment can automatically detect defects in circuit boards and automatically perform welding repairs to improve circuit board detection efficiency and repair accuracy; it reduces manual intervention and avoids an increase in defective product rates due to human errors; automated operations can reduce manual labor intensity, improve production efficiency and the safety of the working environment.

[0099] In some embodiments of the present application, in order to improve the inspection and maintenance efficiency of circuit boards and increase the utilization rate of the integrated maintenance machine, the integrated maintenance machine includes a plurality of board delivery modules, which are arranged in parallel and at intervals, and the board delivery modules are used to receive and drive the movement of the circuit boards.

[0100] The control module is configured to: detect the working state of each board delivery module; the working state includes an idle state and a busy state; control the transplanter to move the circuit board to the board delivery module in the idle state to improve the detection and maintenance efficiency.

[0101] In some embodiments of the present application, the laser welding module 400 includes a laser welding gun 410, a soldering nozzle 420, a positioning recognition module 430, etc. Figures 1 to 3 shown.

[0102] The laser welding gun 410 is used for performing laser welding repair on the circuit board.

[0103] The solder feeding nozzle 420 is used to provide solder wire to the laser welding gun 410 .

[0104] The positioning and identification module 430 is used to photograph the mark points on the circuit board and perform positioning and identification on the circuit board, so as to accurately locate the position on the circuit board that needs to be repaired.

[0105] The control module is also configured to control the welding finishing method of the laser welding gun and the wire feeding amount of the tin feeding nozzle according to the visual inspection results to improve the maintenance quality and efficiency.

[0106] The laser welding gun 410 uses a soldering nozzle 420 to provide soldering wire, does not carry a soldering furnace, starts up quickly, and has stable and reliable soldering quality.

[0107] The maintenance integrated machine of this embodiment also includes a bottom platform 100, a support part 200, a first XY driving module 500, a second XY driving module 600, etc. Figures 1 to 18 shown.

[0108] The bottom platform 100 is the bottom support of the entire integrated maintenance machine.

[0109] The bottom of the support part 200 is connected to the bottom platform 100. The support part 200 is used to support the first XY driving module 500, the second XY driving module 600, and the board feeding module.

[0110] The first XY driving module 500 is installed on the supporting part 200 and is used to drive the AOI inspection module 300 to move along the X-axis direction and the Y-axis direction.

[0111] The second XY driving module 600 is installed on the bottom platform 100 and is used to drive the laser welding module 400 to move along the X-axis direction and the Y-axis direction.

[0112] The board feeding module is installed on the support part 200, and is used to receive and drive the circuit board to move along the X-axis direction; the length direction of the board feeding module is parallel to the X-axis direction, and the board feeding module is located above the AOI inspection module 300 and the laser welding module 400.

[0113] The control module controls the operation of the first XY driving module 500 , the second XY driving module 600 , and the board feeding module.

[0114] The board feeding module is designed to be located above the AOI inspection module 300 and the laser welding module 400, and the circuit board on the board feeding module is also located above the AOI inspection module 300 and the laser welding module 400; driven by the first XY driving module 500, the AOI inspection module 300 can move along the X-axis direction and the Y-axis direction, and can move to any area under the circuit board to perform a comprehensive visual inspection of the circuit board; when it is detected that the circuit board has defects and needs repair, driven by the second XY driving module 600, the laser welding module 400 can move along the X-axis direction and the Y-axis direction, and can move to any area under the circuit board to perform a comprehensive laser welding repair on the circuit board.

[0115] Furthermore, since the first XY driving module 500 is mounted on the supporting portion 200 and the second XY driving module 600 is mounted on the bottom platform 100 , the movement of the AOI inspection module 300 and the movement of the laser welding module 400 do not interfere with each other.

[0116] In some embodiments of the present application, in order to improve the stability and reliability of the movement of the circuit board along the X-axis direction, the board feeding module includes two parallel and spaced board feeding tracks 700, see Figure 1 , Figure 2 As shown, the length direction of the board delivery track 700 is parallel to the X-axis direction, and the two board delivery tracks correspond to the two sides of the circuit board. One of the board delivery tracks receives one side of the circuit board, and the other board delivery track receives the other side of the circuit board. The two board delivery tracks jointly receive and drive the circuit board to move along the X-axis direction.

[0117] For example, two plate delivery modules are provided, and each plate delivery template includes two plate delivery tracks.

[0118] In some embodiments of the present application, the plate delivery track 700 includes a protective cover 710, a bottom plate 720, a guide wheel group, a drive motor 740, etc. Figures 8 to 12 shown.

[0119] The bottom plate 720 has a length direction parallel to the X-axis direction and is used to fix the guide wheel assembly and the drive motor 740, etc.

[0120] The protective cover 710 is disposed on the bottom plate 720 and is used to protect the driving motor 740 and the like.

[0121] The guide wheel assembly includes a plurality of guide wheels 730, which are arranged at intervals along the length direction of the bottom plate 720; the guide wheels 730 are rotatably connected to the bottom plate 720, and the rotation axis of the guide wheels 730 is parallel to the vertical direction. The upper end surface of the guide wheel 730 is used to receive the circuit board.

[0122] The driving motor 740 is used to drive the guide wheel to rotate.

[0123] The upper end surface of the guide wheel of one of the board delivery tracks of the board delivery module receives one side of the circuit board, and the upper end surface of the guide wheel of the other board delivery track receives the other side of the circuit board. The guide wheel groups of the two board delivery tracks rotate to drive the circuit board to move along the X-axis direction.

[0124] By designing the above-mentioned board conveying track structure, not only the circuit board can be conveyed stably and reliably, but also the structure is simple and easy to implement.

[0125] In some embodiments of the present application, in order to further improve the stability of circuit board transmission, the board delivery track 700 also includes a supporting wheel group, see Fig.11 shown.

[0126] The support wheel assembly includes a plurality of support wheels 750, which are arranged at intervals along the length direction of the bottom plate 720; the support wheels 750 are rotatably connected to the bottom plate 720, and the rotation axis of the support wheels 750 is parallel to the Y-axis direction. The outer peripheral surface of the support wheel 750 is used to receive the circuit board.

[0127] The plurality of support wheels 750 and the plurality of guide wheels 730 are arranged crosswise. The plurality of support wheels 750 and the plurality of guide wheels 730 are arranged in a straight line along the X-axis direction.

[0128] The driving motor 740 drives the guide wheel 730 to rotate, and the guide wheel 730 drives the circuit board to move along the X-axis direction, and the circuit board drives the support wheel 750 to rotate. The guide wheel 730 supports and drives the circuit board to move, and the support wheel 750 plays an auxiliary supporting role to ensure that the circuit board moves smoothly along the X-axis direction.

[0129] In some embodiments of the present application, in order to ensure that each guide wheel 730 rotates synchronously, the plate delivery track 700 also includes a synchronous pulley group 760, see Fig.11 shown.

[0130] The synchronous pulley group 760 includes a synchronous belt 762 and a plurality of synchronous wheels 761; the plurality of synchronous wheels 761 are arranged at intervals along the X-axis direction; the rotation axis of the synchronous wheels 761 is parallel to the vertical direction; the synchronous belt 762 is connected to the plurality of synchronous wheels 761, and the plurality of synchronous wheels 761 are connected to the plurality of guide wheels 730 in a one-to-one correspondence. The synchronous wheels 761 are arranged coaxially with the corresponding guide wheels 730.

[0131] The driving motor 740 drives one of the synchronous wheels to rotate, and the synchronous wheel drives the other synchronous wheels to rotate synchronously through the synchronous belt 762. Each synchronous wheel drives the corresponding guide wheel to rotate, thereby realizing the synchronous rotation of each guide wheel 730.

[0132] In some embodiments of the present application, the plate delivery track 700 further includes a pressing module 770, which includes a pressing plate assembly 771, a pressing cylinder 772, etc. Fig.12 shown.

[0133] The pressing plate assembly 771 is used for pressing the circuit board.

[0134] The cylinder body of the clamping cylinder 772 is fixed on the bottom plate 720 ; the piston rod of the clamping cylinder 772 is arranged vertically, and the piston rod is connected to the pressure plate assembly 771 , driving the pressure plate assembly 771 to move up and down.

[0135] The piston rod of the clamping cylinder 772 drives the pressing plate assembly 771 to move downward, and the pressing plate assembly 771 presses the circuit board to prevent the circuit board from moving, which is convenient for the AOI inspection module 300 to perform visual inspection and the laser welding module 400 to perform welding maintenance. When the maintenance is completed, the piston rod of the clamping cylinder 772 drives the pressing plate assembly 771 to move upward, and the pressing plate assembly 771 leaves the circuit board, and the guide wheel 730 drives the circuit board to move along the X-axis direction.

[0136] By designing the above-mentioned pressing module 770 for pressing circuit boards, visual inspection and welding repair are facilitated, thereby improving the inspection efficiency, repair efficiency and repair effect of the circuit boards.

[0137] In some embodiments of the present application, the pressure plate assembly 771 includes a friction sleeve 771-1, a pressure plate 771-2, a spring 771-3, etc. Fig.13 , Fig.14 shown.

[0138] The friction sleeve 771 - 1 is arranged vertically and has a vertical cavity 771 - 1 - 1 with an opening at the bottom; the piston rod of the pressing cylinder 772 is connected to the friction sleeve 771 - 1 to drive the friction sleeve 771 - 1 to move up and down.

[0139] The pressing plate 771 - 2 is arranged vertically and is slidably connected to the vertical cavity 771 - 1 - 1 of the friction sleeve 771 - 1 . The bottom of the pressing plate 771 - 2 extends out of the vertical cavity 771 - 1 - 1 for crimping the circuit board.

[0140] The spring 771 - 3 is arranged vertically, the top of the spring 771 - 3 is connected to the top of the friction sleeve 771 - 1 , and the bottom of the spring 771 - 3 is connected to the top of the pressure plate 771 - 2 .

[0141] The top of the vertical cavity 771 - 1 - 1 of the friction sleeve 771 - 1 also has an opening, and the top of the spring 771 - 3 passes through the top opening of the vertical cavity 771 - 1 - 1 and is connected to the top of the friction sleeve 771 - 1 .

[0142] When the friction sleeve 771-1 moves downward, the spring 771-3 and the pressure plate 771-2 move downward until the bottom of the pressure plate 771-2 contacts the circuit board. If the friction sleeve 771-1 continues to move downward, the spring 771-3 is compressed downward, and the spring 771-3 presses the pressure plate 771-2 downward, driving the pressure plate 771-2 to move downward and press the circuit board. The spring 771-3 acts as a buffer to prevent the friction sleeve 771-1 and the pressure plate 771-2 from being directly rigidly connected, thereby preventing damage to the circuit board.

[0143] By designing the pressing plate assembly 771 with the above structure, not only the circuit board can be pressed tightly, but also the circuit board can be avoided from being damaged.

[0144] In some embodiments of the present application, in order to ensure that the spring 771-3 is compressed vertically downward, the pressure plate 771-2 has a vertical accommodating chamber 771-2-1, the top of the accommodating chamber 771-2-1 has an opening, a vertical guide shaft 771-4 is fixed in the accommodating chamber 771-2-1, and the lower part of the spring 771-3 extends into the accommodating chamber 771-2-1 of the pressure plate 771-2, and is sleeved on the outer side of the guide shaft 771-4. When the friction sleeve 771-1 moves downward to compress the spring 771-3, due to the guiding effect of the guide shaft 771-4, the compression direction of the spring 771-3 is ensured to be vertically downward.

[0145] In some embodiments of the present application, the pressure plate assembly further includes a positioning pin 771-5, the length direction of which is parallel to the Y-axis direction; the pressure plate 771-2 has an elongated hole 771-2-2, which is located below the accommodating cavity 771-2-1, and the length direction of which is parallel to the vertical direction; the friction sleeve 771-1 has a positioning hole, and the positioning pin 771-5 passes through the positioning hole 771-1-2 on the friction sleeve 771-1 and the elongated hole 771-2-2 on the pressure plate 771-2 in sequence. The positioning pin 771-5 plays a role in installation and positioning, ensuring the reliability of the connection between the friction sleeve 771-1 and the pressure plate 771-2.

[0146] In some embodiments of the present application, in order to improve the reliability of the circuit board crimping, a plurality of pressure plate assemblies 771 are arranged, and the plurality of pressure plate assemblies 771 are arranged at intervals along the length direction of the bottom plate 720, see Fig.12 As shown; the clamping module 770 also includes a cylinder connector 773, the piston rod of the clamping cylinder 772 is connected to the cylinder connector 773, and the cylinder connector 773 is respectively connected to each pressure plate assembly 771, so that multiple pressure plate assemblies 771 can move up and down synchronously to jointly clamp the circuit board.

[0147] In some embodiments of the present application, in order to ensure that the piston rod of the clamping cylinder 772 moves vertically up and down, the clamping module 700 also includes a guide assembly 774; the guide assembly 774 includes a guide rail 774-2, a slider 774-3, etc., see Fig.15 , Fig.16 shown.

[0148] The guide rail 774-2 is arranged vertically on the bottom plate 720. The guide rail 774-2 is installed on the bottom plate 720 through the guide rail mounting member 774-1.

[0149] The slider 774-3 is slidably connected to the guide rail 774-2; the piston rod of the clamping cylinder 772 is connected to the slider 774-3, driving the slider 774-3 to move up and down along the guide rail 774-2. In this embodiment, the piston rod of the clamping cylinder 772 is connected to the cylinder connector 773, and the cylinder connector 773 is connected to the slider 774-3 through the slider mounting member 774-4.

[0150] By designing the above-mentioned guide assembly 774, it is ensured that the piston rod of the clamping cylinder 772 moves vertically up and down.

[0151] In some embodiments of the present application, the plate delivery track 700 further includes two stopper assemblies 780, which are arranged at intervals along the length direction of the bottom plate 720. Fig. 9As shown; each stopper assembly 780 includes a stopper cylinder 781, a slide rail 782, and a stopper block 783; the stopper cylinder 781 and the slide rail 782 are fixed on the base plate 720; the length direction of the slide rail 782 is parallel to the Y-axis direction, and the stopper block 783 is slidably connected to the slide rail 782; the piston rod of the stopper cylinder 781 is connected to the stopper block 783, driving the stopper block 783 to move along the slide rail 782, see Fig.17 , Fig.18 shown.

[0152] When the two board feeding rails 700 drive the circuit board to move to a certain position along the X-axis direction, the piston rod of the stop cylinder 781 drives the stop block 783 to extend, and the stop blocks 783 of the two stop assemblies 780 stop the front and rear ends of the circuit board to prevent the circuit board from moving forward and backward, so as to facilitate visual inspection and laser welding maintenance of the circuit board.

[0153] The board delivery track 700 is also provided with a position sensor. When the position sensor senses a circuit board, it sends a sensing signal to the control module. The control module controls the two stop cylinders 781 to operate, driving the two blocking blocks 783 to extend to intercept the circuit board.

[0154] For example, for each plate delivery track, along the X-axis direction, the multiple guide wheels of the guide wheel group are divided into three parts: the front part, the middle part, and the rear part, and a position sensor is arranged between the middle part and the rear part.

[0155] The circuit board moves along the X-axis direction, passing through the front guide wheel, the middle guide wheel, and the rear guide wheel in sequence; when the circuit board moves to the middle guide wheel, the position sensor senses the circuit board and sends a sensing signal to the control module, which controls the two stop cylinders 781 to operate and drives the two blocking blocks 783 to extend to intercept the circuit board. Then, the control module controls the clamping cylinder 772 to operate, drives the pressure plate assembly 771 to move down to clamp the circuit board, and then controls the AOI inspection module to move to the bottom of the circuit board to perform visual inspection on the circuit board.

[0156] If the visual inspection passes, the circuit board is judged to be qualified; if the visual inspection fails, the laser welding module is controlled to move to the bottom of the circuit board to repair the circuit board; after the repair is completed, the AOI inspection module is controlled again to perform visual inspection on the circuit board.

[0157] If the visual inspection still fails and the number of visual inspections has not reached the set number, the laser welding module is controlled again to repair the circuit board until the visual inspection passes or the number of visual inspections reaches the set number.

[0158] If the number of visual inspections reaches the set number (such as 3 times) and the visual inspection still fails, the circuit board is determined to be defective.

[0159] In some embodiments of the present application, the support portion 200 includes a first support seat 210 and a second support seat 220, see Figure 1 , Figure 2 shown.

[0160] The first support seat 210 and the second support seat 220 are parallel and spaced apart. The length direction of the first support seat 210 and the length direction of the second support seat 220 are parallel to the Y-axis direction. The bottom of the first support seat 210 and the bottom of the second support seat 220 are connected to the bottom platform 100.

[0161] One end of the board delivery module is connected to the top of the first support seat 210, and the other end of the board delivery module is connected to the top of the second support seat 220. Therefore, the board delivery module is mounted on the first support seat 210 and the second support seat 220.

[0162] The first XY driving module 500 includes a first X-axis moving mechanism 510 and two first Y-axis moving mechanisms 520. Figure 4 , Figure 5 shown.

[0163] The AOI inspection module 300 is mounted on the first X-axis moving mechanism 510 ; the first X-axis moving mechanism 510 drives the AOI inspection module 300 to move along the X-axis direction.

[0164] One end of the first X-axis moving mechanism 510 is mounted on one of the first Y-axis moving mechanisms; one of the first Y-axis moving mechanisms is mounted on the top of the first supporting seat 210.

[0165] The other end of the first X-axis moving mechanism 510 is mounted on another first Y-axis moving mechanism; and the other first Y-axis moving mechanism is mounted on the top of the second supporting seat 220 .

[0166] The two first Y-axis moving mechanisms jointly drive the first X-axis moving mechanism 510 to move along the Y-axis direction, thereby driving the AOI inspection module 300 to move along the Y-axis direction.

[0167] By designing the first XY driving module 500 of the above structure, the AOI inspection module 300 can move freely along the X-axis direction and the Y-axis direction, and can be easily moved to any area under the circuit board to facilitate visual inspection of the circuit board.

[0168] The second XY driving module 600 includes a second X-axis moving mechanism 610 and a second Y-axis moving mechanism 620. Figure 6 shown.

[0169] The laser welding module 400 is installed on the second X-axis moving mechanism 610; the second X-axis moving mechanism 610 drives the laser welding module 400 to move along the X-axis direction.

[0170] The second X-axis moving mechanism 610 is installed on the second Y-axis moving mechanism 620; the second Y-axis moving mechanism 620 drives the second X-axis moving mechanism 610 to move along the Y-axis direction, thereby driving the laser welding module 400 to move along the Y-axis direction.

[0171] The second Y-axis moving mechanism 620 is installed on the bottom platform 100 .

[0172] By designing the second X-axis moving mechanism 610 of the above structure, the laser welding module 400 can move freely along the X-axis direction and the Y-axis direction, and can be easily moved to any area under the circuit board to perform laser welding trimming on the circuit board.

[0173] In some embodiments of the present application, the first X-axis moving mechanism 510 includes a first X-axis motor 511, a first X-axis screw rod 512, a first X-axis guide rail 513, and a first X-axis slider 514. Figure 4 , Figure 5 As shown; the length direction of the first X-axis guide rail 513 is parallel to the X-axis direction; the first X-axis lead screw 512 is parallel to the first X-axis guide rail 513; the first X-axis lead screw 512 is connected to the first X-axis slider 514, and the first X-axis slider 514 can slide along the first X-axis guide rail 513; the first X-axis motor 511 drives the first X-axis lead screw 512 to rotate, and the first X-axis lead screw 512 rotates to drive the first X-axis slider 514 to slide along the first X-axis guide rail 513; the first X-axis slider 514 is connected to the AOI detection module 300; the first X-axis slider 514 drives the AOI detection module 300 to slide along the first X-axis guide rail 513, so as to realize the movement of the AOI detection module 300 along the X-axis direction. The first X-axis motor 511 and the first X-axis lead screw 512 are installed on the first X-axis guide rail 513.

[0174] In some embodiments of the present application, the first Y-axis moving mechanism 520 includes a first Y-axis motor 521, a first Y-axis screw rod 522, a first Y-axis guide rail 523, and a first Y-axis slider 524, see Figure 4 , Figure 5 As shown; the length direction of the first Y-axis guide rail 523 is parallel to the Y-axis direction; the first Y-axis screw rod 522 is parallel to the first Y-axis guide rail 523; the first Y-axis screw rod 522 is connected to the first Y-axis slider 524, and the first Y-axis slider 524 can slide along the first Y-axis guide rail 523; the first Y-axis motor 521 drives the first Y-axis screw rod 522 to rotate, and the first Y-axis screw rod 522 rotates to drive the first Y-axis slider 524 to slide along the first Y-axis guide rail 523. The first Y-axis motor 521 and the first Y-axis screw rod 522 are installed on the first Y-axis guide rail 523.

[0175] The first Y-axis guide rails of the two first Y-axis moving mechanisms are arranged in parallel and at intervals. One end of the first X-axis guide rail 513 is connected to the first Y-axis slider of one of the first Y-axis moving mechanisms. The other end of the first X-axis guide rail 513 is connected to the first Y-axis slider of the other first Y-axis moving mechanism.

[0176] The two first Y-axis sliders jointly drive the first X-axis guide rail 513 to slide along the first Y-axis guide rail 523 , thereby enabling the first X-axis guide rail 513 and the AOI inspection module 300 to move along the Y-axis direction.

[0177] By designing the first X-axis moving mechanism 510 and the first Y-axis moving mechanism 520 of the above structure, it is not only easy to drive the AOI inspection module 300 to move along the X-axis direction and the Y-axis direction, but also has a simple structure, is easy to implement, and has low cost.

[0178] In some embodiments of the present application, the second X-axis moving mechanism 610 includes a second X-axis motor, a second X-axis screw, a second X-axis guide rail, and a second X-axis slider; the length direction of the second X-axis guide rail is parallel to the X-axis direction; the second X-axis screw is parallel to the second X-axis guide rail; the second X-axis screw is connected to the second X-axis slider, and the second X-axis slider can slide along the second X-axis guide rail; the second X-axis motor drives the second X-axis screw to rotate, and the second X-axis screw rotates to drive the second X-axis slider to slide along the second X-axis guide rail; the second X-axis slider is connected to the laser welding module 400; the second X-axis slider drives the laser welding module 400 to slide along the second X-axis guide rail, thereby realizing the movement of the laser welding module 400 along the X-axis direction.

[0179] In some embodiments of the present application, two second Y-axis moving mechanisms 620 are provided, each second Y-axis moving mechanism includes a second Y-axis motor, a second Y-axis screw, a second Y-axis guide rail, and a second Y-axis slider; the length direction of the second Y-axis guide rail is parallel to the Y-axis direction; the second Y-axis screw is parallel to the second Y-axis guide rail; the second Y-axis screw is connected to the second Y-axis slider, and the second Y-axis slider can slide along the second Y-axis guide rail; the second Y-axis motor drives the second Y-axis screw to rotate, and the second Y-axis screw rotates to drive the second Y-axis slider to slide along the second Y-axis guide rail.

[0180] The second Y-axis guide rails of the two second Y-axis moving mechanisms are arranged in parallel and at intervals. One end of the second X-axis guide rail is connected to the second Y-axis slider of one of the second Y-axis moving mechanisms. The other end of the second X-axis guide rail is connected to the second Y-axis slider of the other second Y-axis moving mechanism.

[0181] The two second Y-axis sliders jointly drive the second X-axis guide rail to slide along the second Y-axis guide rail, thereby realizing the movement of the second X-axis guide rail and the laser welding module 400 along the Y-axis direction.

[0182] By designing the second X-axis moving mechanism 610 and the second Y-axis moving mechanism 620 of the above structure, it is not only easy to drive the laser welding module 400 to move along the X-axis direction and the Y-axis direction, but also the structure is simple, easy to implement and low in cost.

[0183] The maintenance integrated machine of this embodiment has the following working process:

[0184] (1) The inspection machine receives the incoming board from the previous process and is transported to the idle board delivery module by the transplanter. The AOI inspection module is first used for optical inspection. Then, the inspection results are uploaded to the control module and the MES system. At the same time, the OK board (the circuit board that passed the inspection) is directly discharged to the next process.

[0185] (2) If the test result is NG (failed the test), the laser welding module moves to the bottom of the board feeding module and performs corresponding trimming actions on the circuit board according to the test result.

[0186] (3) After the trimming is completed, the AOI inspection module moves to the bottom of the board feeding module and performs a second inspection on the circuit board. If the inspection result is OK, the circuit board will flow directly to the next process; if the inspection result is NG, the laser welding module moves to the bottom of the board feeding module again, and selects the trimming method and wire feeding amount according to the defective type, and performs laser welding trimming on the circuit board.

[0187] (4) The AOI inspection module then re-inspects the circuit board. If the inspection result is OK, the circuit board is directly discharged. If the inspection result is NG, the circuit board is a defective board and is collected.

[0188] In the integrated maintenance machine of this embodiment, the AOI detection module is installed on the top of the support part through the first XY drive module, and the laser welding module is installed on the bottom platform through the second XY drive module. The two sets of XY drive modules are arranged diagonally in space to achieve simultaneous asynchronous operation of the AOI detection module and the laser welding module to avoid interference. During the movement, the two sets of XY drive modules are driven by the control module through dynamic path planning, thereby achieving simultaneous asynchronous movement and avoiding interference.

[0189] In the integrated maintenance machine of this embodiment, the AOI detection module scans and photographs the object to be inspected to obtain image data; the image data is analyzed to detect the location and type of defects; according to the detected defects, the laser welding module automatically performs rework operations, including welding, connection, replacement, etc. During the rework process, automatic correction and adjustment are performed as needed to ensure the accuracy and quality of the repair. After the rework is completed, the AOI detection module is used to automatically inspect and confirm to ensure that the defects have been completely repaired, thereby realizing automatic detection and repair of defects on electronic components or PCBs, reducing manual intervention and labor costs; at the same time, automatic correction and adjustment improve the accuracy and quality of the repair.

[0190] Due to the complexity of the welding process of traditional welding technology and the particularity of the welding joint, welding defects sometimes occur, such as incomplete welding of welding points (cold welding, insufficient tin, etc.), substandard welding point quality (continuous welding, exposed copper, etc.), etc. These defects will lead to the performance of the product being reduced and even affect the safety of the product. The integrated maintenance machine of this embodiment, by introducing automatic control and laser repair technology, can automatically detect and repair defects in welding, repair defects or bad welding points generated during the welding process, and improve the quality and reliability of the product.

[0191] In some embodiments of the present application, the laser welding module is a selective laser welding module, which adopts selective laser welding technology. Selective laser welding is a high-precision welding technology that uses a laser beam to perform local welding. Compared with traditional full-scale laser welding, selective laser welding can accurately weld local areas without affecting surrounding materials, and has the following characteristics and advantages:

[0192] (1) High-precision welding: Selective laser welding can achieve very small welding points and weld sizes by adjusting the energy density and focal position of the laser beam, thereby achieving high-precision welding. It can weld extremely fine materials, thin plates, or small-sized parts in complex structures to meet the needs of high-precision manufacturing.

[0193] (2) Non-contact welding: During the selective laser welding process, the laser beam directly irradiates and heats the welding area without contacting the welding material. This non-contact welding can avoid the deformation, contamination or damage problems that may exist in traditional welding methods, and maintain the integrity and purity of the welding area.

[0194] (3) Small heat-affected zone: Since selective laser welding uses a high-energy-density laser beam, the welding process is very fast, with only a split-second heating time. Therefore, the heat-affected zone in the weld area is very small, and the thermal damage to the surrounding material is almost negligible. This is very important for applications that require maintaining material properties.

[0195] (4) Strong adaptability: Selective laser welding can adapt to the welding of various materials, including metals, plastics, ceramics, etc. It can weld different types of materials and materials of different thicknesses, and has high adaptability and flexibility.

[0196] (5) High degree of automation: Selective laser welding can be integrated with the automation system to achieve a fully automated welding process. By combining with robots and other equipment, high-efficiency and high-consistency welding operations can be achieved, reducing manual intervention and improving production efficiency.

[0197] The selective laser welding module can accurately repair the detected defects and only perform welding repairs in the areas that need repair, avoiding unnecessary operations in areas where no problems have occurred, and improving the efficiency and accuracy of repair. Selective laser welding has significant advantages in improving product quality, reducing production costs, and improving production efficiency. The integrated maintenance machine of this embodiment realizes defect detection and automatic trimming through AOI visual inspection combined with selective laser welding, which solves the problems of low efficiency and slow cycle of wave soldering quality inspection and welding defect repair in the DIP process section of PCBA production factories.

[0198] AOI (Automated Optical Inspection) is the full name of automatic optical inspection, which is a technology based on optical principles to detect common defects encountered in welding production. When automatically inspecting, the machine automatically scans the PCB through a camera, collects images, compares the tested solder joints with qualified parameters in the database, and checks the defects on the PCB after image processing. The defects are displayed / marked through a display or automatic mark for maintenance personnel to repair in order to improve production efficiency and welding quality. By using AOI as a tool to reduce defects, errors can be found and eliminated early in the assembly process to achieve good process control. Early detection of defects will avoid sending bad boards to subsequent assembly stages and reduce repair costs. AOI can improve product quality, reduce labor costs, and reduce defects and errors in the production process. By using AOI technology, market demand can be better met, customer satisfaction can be improved, and the competitiveness of enterprises can be enhanced.

[0199] The AOI inspection module scans and photographs the object to be inspected to obtain image data; it uses a high-resolution camera and advanced image processing algorithms, and a deep learning neural network model. By training massive circuit board inspection data, it can learn and understand various types of defects and problems, and can better adapt to different products and production environments. It can be compatible with various morphological changes of solder joints, automatically identify the location of devices / solder joints and defect types; it can detect defects on circuit boards with high precision, such as solder joint quality, short circuits, open circuits, etc., to improve the accuracy and stability of detection. Compared with traditional manual inspection, the AOI inspection module can more accurately identify and locate defects and improve product quality.

[0200] AOI inspection modules can identify smaller and more subtle defects, such as minor welding problems and slight color differences, thereby improving the ability to detect product quality. They also have automatic learning and adaptive capabilities, and can adjust and optimize according to changes in the production process and changes in product characteristics. They can automatically identify and correct some common problems and misjudgments, improving the stability and efficiency of detection.

[0201] The integrated maintenance machine of this embodiment uses a high-precision camera and image recognition technology to detect the quality and defects of the welded joints. Then, according to the detection results, the parameters of the laser welding module are automatically adjusted to perform repair welding. The integrated maintenance machine of this embodiment has the following advantages:

[0202] (1) High precision: The AOI inspection module accurately identifies and locates welding defects, and the laser welding module achieves precise welding repair. However, the wave soldering process generates high temperatures, which may damage some temperature-sensitive components. The nozzle of the selective wave soldering cannot achieve the accuracy and temperature control of the laser beam.

[0203] (2) Speed: The welding repair process can be automated, greatly improving the efficiency and speed of welding repair.

[0204] (3) Flexibility: The welding parameters and repair strategies can be automatically adjusted according to different welding defects and product requirements to adapt to different welding tasks. The high-energy laser beam can instantly heat the corresponding weld point to the melting temperature.

[0205] (4) High reliability: It can reduce the impact of human factors on welding repair, improve the consistency and reliability of welding repair, improve product quality and reliability, reduce the workload and error rate of manual rework, improve production efficiency and reduce costs. At the same time, it can also enhance the competitiveness and market image of manufacturing companies.

[0206] (5) Laser welding can improve the efficiency and quality of repairs and reduce the errors and labor intensity of manual operations because the working principle is that high-energy laser melts the solder joints. It can be repaired multiple times as needed to ensure the quality stability of the solder joints. The laser welding module has a simple structure, saves space, and has a faster operating speed.

[0207] (6) The power of selective wave soldering is 3kW, while the power of laser welding is 200W. It does not require preheating, does not produce tin oxide slag and excessive loss, has relatively low energy consumption, and is environmentally friendly and pollution-free.

[0208] The integrated maintenance machine of this embodiment integrates the AOI inspection module and the selective laser welding module, realizing full automation of the production process; it can automatically complete operations such as inspection, rework and verification without human intervention, thereby improving production efficiency and consistency.

[0209] AOI inspection modules and selective laser welding modules can record and analyze data in real time during the inspection and repair process, such as defect type, location, repair results, etc. These data can be used for quality analysis and production process improvement, optimize production processes, and improve production efficiency and product quality.

[0210] The AOI inspection module and the selective laser welding module can be used together to effectively capture and repair welding defects and improve the quality and reliability of circuit boards. The application of the all-in-one inspection and repair machine can reduce the defective product rate and reduce the impact of product defects on users.

[0211] The integrated maintenance machine of this embodiment has the advantages of high-precision detection, selective rework, automated operation, real-time data analysis, reduction of human errors, high efficiency, accuracy, automation, reliability and data management. The application of the integrated maintenance machine can improve production efficiency, reduce defective rate, and improve product quality and customer satisfaction.

[0212] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. Repair all-in-one machine, Features: include: AOI inspection module, which is used for visual inspection of circuit boards; Laser welding module, which is used for laser welding repair of circuit boards; A control module, configured to: control the AOI inspection module to perform visual inspection on the circuit board; and record the number of visual inspections; If the number of visual inspections does not reach the set number and the visual inspection fails, the laser welding module is controlled to repair the circuit board. After the repair is completed, the AOI inspection module is controlled again to perform visual inspection on the circuit board until the number of visual inspections reaches the set number or the visual inspection passes; If the number of visual inspections reaches the set number of times and the visual inspection still fails, the circuit board is determined to be a defective product.

2. The maintenance integrated machine according to claim 1, Features: The integrated maintenance machine further comprises a plurality of board delivery modules, which are arranged in parallel and at intervals; the board delivery modules are used to receive and drive the circuit board to move; The control module is further configured to: detect the working state of each of the board delivery modules; the working state includes an idle state and a busy state; Control the transplanter to move the circuit board to the board delivery module which is in an idle state.

3. The maintenance integrated machine according to claim 1, Features: The laser welding module comprises: A laser welding gun, used for laser welding repair of the circuit board; A tin feeding nozzle, which is used to provide welding wire to the laser welding gun; A positioning and identification module, which is used to photograph the mark points on the circuit board for positioning and identification; The control module is also configured to control the welding finishing mode of the laser welding gun and the wire feeding amount of the tin feeding nozzle according to the visual inspection result.

4. The maintenance integrated machine according to claim 2, Features: The maintenance integrated machine also includes: Bottom platform; A support portion, the bottom of which is connected to the bottom platform; A first XY driving module, which is installed on the supporting part and is used to drive the AOI detection module to move along the X-axis direction and the Y-axis direction; A second XY driving module, which is mounted on the bottom platform and is used to drive the laser welding module to move along the X-axis direction and the Y-axis direction; The board feeding module is installed on the supporting part; the length direction of the board feeding module is parallel to the X-axis direction, and is located above the AOI inspection module and the laser welding module.

5. The integrated maintenance machine according to claim 4, Features: The support portion includes a first support seat and a second support seat; The first support seat is parallel to the second support seat and arranged at intervals, and the length direction of the first support seat and the length direction of the second support seat are parallel to the Y-axis direction; the bottom of the first support seat and the bottom of the second support seat are connected to the bottom platform; One end of the plate delivery module is connected to the top of the first support seat, and the other end of the plate delivery module is connected to the top of the second support seat; The first XY driving module includes a first X-axis moving mechanism and two first Y-axis moving mechanisms; the AOI detection module is installed on the first X-axis moving mechanism; the first X-axis moving mechanism drives the AOI detection module to move along the X-axis direction; One end of the first X-axis moving mechanism is mounted on one of the first Y-axis moving mechanisms; one of the first Y-axis moving mechanisms is mounted on the top of the first supporting seat; The other end of the first X-axis moving mechanism is mounted on another first Y-axis moving mechanism; and the other first Y-axis moving mechanism is mounted on the top of the second supporting seat; The two first Y-axis moving mechanisms drive the first X-axis moving mechanism to move along the Y-axis direction; The second XY driving module includes a second X-axis moving mechanism and a second Y-axis moving mechanism; the laser welding module is installed on the second X-axis moving mechanism; the second X-axis moving mechanism drives the laser welding module to move along the X-axis direction; The second X-axis moving mechanism is installed on the second Y-axis moving mechanism; the second Y-axis moving mechanism drives the second X-axis moving mechanism to move along the Y-axis direction; the second Y-axis moving mechanism is installed on the bottom platform.

6. The integrated maintenance machine according to claim 5, Features: The first X-axis moving mechanism includes a first X-axis motor, a first X-axis lead screw, a first X-axis guide rail, and a first X-axis slider; the length direction of the first X-axis guide rail is parallel to the X-axis direction; the first X-axis lead screw is parallel to the first X-axis guide rail; the first X-axis lead screw is connected to the first X-axis slider, the first X-axis motor drives the first X-axis lead screw to rotate, and the first X-axis lead screw drives the first X-axis slider to slide along the first X-axis guide rail; the first X-axis slider is connected to the AOI detection module; The first Y-axis moving mechanism includes a first Y-axis motor, a first Y-axis lead screw, a first Y-axis guide rail, and a first Y-axis slider; the length direction of the first Y-axis guide rail is parallel to the Y-axis direction; the first Y-axis lead screw is parallel to the first Y-axis guide rail; the first Y-axis lead screw is connected to the first Y-axis slider, the first Y-axis motor drives the first Y-axis lead screw to rotate, and the first Y-axis lead screw drives the first Y-axis slider to slide along the first Y-axis guide rail; The first Y-axis guide rails of the two first Y-axis moving mechanisms are arranged in parallel and at intervals; One end of the first X-axis guide rail is connected to a first Y-axis slider of one of the first Y-axis moving mechanisms; The other end of the first X-axis guide rail is connected to a first Y-axis slider of another first Y-axis moving mechanism.

7. The maintenance integrated machine according to claim 5, Features: The second X-axis moving mechanism includes a second X-axis motor, a second X-axis lead screw, a second X-axis guide rail, and a second X-axis slider; the length direction of the second X-axis guide rail is parallel to the X-axis direction; the second X-axis lead screw is parallel to the second X-axis guide rail; the second X-axis lead screw is connected to the second X-axis slider, the second X-axis motor drives the second X-axis lead screw to rotate, and the second X-axis lead screw drives the second X-axis slider to slide along the second X-axis guide rail; the second X-axis slider is connected to the laser welding module; Two second Y-axis moving mechanisms are provided, each of which comprises a second Y-axis motor, a second Y-axis screw, a second Y-axis guide rail, and a second Y-axis slider; the length direction of the second Y-axis guide rail is parallel to the Y-axis direction; the second Y-axis screw is parallel to the second Y-axis guide rail; the second Y-axis screw is connected to the second Y-axis slider, the second Y-axis motor drives the second Y-axis screw to rotate, and the second Y-axis screw drives the second Y-axis slider to slide along the second Y-axis guide rail; The second Y-axis guide rails of the two second Y-axis moving mechanisms are arranged in parallel and at intervals; One end of the second X-axis guide rail is connected to a second Y-axis slider of one of the second Y-axis moving mechanisms; The other end of the second X-axis guide rail is connected to a second Y-axis slider of another second Y-axis moving mechanism.

8. The integrated maintenance machine according to claim 2, Features: The board delivery module comprises two board delivery rails which are arranged in parallel and at intervals, and the two board delivery rails correspond to two sides of the circuit board.

9. The integrated maintenance machine according to claim 8, Features: The plate delivery track comprises: Base plate; A guide wheel assembly, comprising a plurality of guide wheels, the plurality of guide wheels being arranged at intervals along the length direction of the bottom plate; the guide wheels being rotatably connected to the bottom plate, and the rotation axis of the guide wheels being parallel to the vertical direction; A driving motor is used to drive the guide wheel to rotate.

10. The integrated maintenance machine according to claim 9, Features: The plate delivery track also includes a pressing module, and the pressing module includes: A pressing plate assembly, which is used for pressing a circuit board; A pressing cylinder, whose cylinder body is fixed on the base plate; and whose piston rod is connected with the pressing plate assembly to drive the pressing plate assembly to move up and down.

Images