An automatic detection machine for integrated circuit PCB board defects

Abstract

The present invention discloses an automatic defect detection machine for integrated circuit PCB boards, which relates to the technical field of PCB board detection. The machine comprises an optical detection box, wherein an array of transparent partitions are fixedly installed in the optical detection box, and a camera movable frame is movably installed on the upper side of each transparent partition. A camera mounting block is movably installed in the camera movable frame, and a detection camera is fixedly installed in the camera mounting block. The present invention uses multiple sets of camera movable frames to load the camera mounting blocks and detection cameras, thereby enabling the device to detect multiple sets of PCB boards at a time, thereby increasing the detection efficiency of the device. Moreover, the movement of the multiple sets of camera movable frames is controlled by a displacement mechanism, and the movement of all camera movable frames is synchronized. During the detection process, images of the same position of multiple sets of PCB boards can be displayed simultaneously. During the detection process, workers can compare multiple sets of images at once, making it easier to discover PCB problems through comparison.

Description

Technical Field

[0001] The present invention relates to the technical field of PCB board detection, in particular to an automatic detection machine for defects in integrated circuit PCB boards. Background Art

[0002] PCB boards provide mechanical assembly support and electrical connections for components of various electronic systems. They are also core components for signal transmission, signal reception and transmission, and power supply for electronic devices. They are mainly composed of two types of materials: insulating substrates and conductors. The insulating substrates are generally made of insulating and heat-insulating materials that are not easy to bend. Copper-clad boards are commonly used. Conductors are usually copper foil. PCB board testing refers to the inspection and evaluation of the design, manufacturing, and assembly quality of printed circuit boards through various technologies and means to ensure that they meet the predetermined design requirements and performance standards and can work reliably in electronic devices. Visual inspection is a commonly used inspection method.

[0003] During visual inspection, an optical imaging system can be used to capture images of PCB boards. By comparing them with standard images or design data, various defects such as short circuits, open circuits, missing parts, wrong parts, and offsets can be automatically identified and detected. However, this inspection method can often only inspect one PCB integrated board at a time, resulting in low inspection efficiency. In addition to automatic identification, this inspection method is often equipped with a staff member to perform manual visual inspection through a screen. The inspection worker needs to repeatedly compare the PCB board to be inspected with the standard board. The repetitive work will easily make the worker tired. In addition, the existing optical inspection environment of PCB boards is relatively dark to ensure that the inspection process is not affected by external light sources. However, the light source direction of its inspection camera is relatively single, which may produce shadows during the inspection process, thereby affecting the normal progress of visual inspection. Summary of the Invention

[0004] The purpose of the present invention is to provide an automatic inspection machine for defects in integrated circuit PCB boards to solve the problems of low efficiency, easy fatigue of workers and single light source direction in the existing optical inspection technology mentioned in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automatic integrated circuit PCB board defect detection machine, comprising an optical inspection box, wherein an array of transparent partitions are fixedly installed in the optical inspection box, and a camera movable frame is movably installed on the upper side of each transparent partition, and a camera mounting block is movably installed in the camera movable frame, and a detection camera is fixedly installed in the camera mounting block;

[0006] The receiving mechanism includes a mounting plate, a receiving frame, and a first ventilation groove. The mounting plate is provided on one side of the optical detection box. The receiving frame array is fixedly mounted on the mounting plate. The first ventilation groove is provided in the mounting plate.

[0007] The transport mechanism includes a mounting frame and a rotating wheel, wherein the mounting frame is fixedly mounted on the receiving frame and the rotating wheel is movably mounted in the mounting frame;

[0008] The displacement mechanism includes a mounting vertical plate and a movable rod. The mounting vertical plate is movably mounted on the optical detection box, and the movable rod is movably mounted on the mounting vertical plate.

[0009] Preferably, the supporting mechanism includes an installation connecting plate, a supporting frame, a discharge groove, a limiting side plate, a first ventilation groove and an air pump. The upper side of the supporting frame is in the same plane as the upper side of the transparent partition, and the spacing between the two groups of the supporting frames on the same layer is the same as the width of the transparent partition. The supporting frame is provided with a discharge groove, and the edge of the upper side of the discharge groove is rounded. The outer side of the supporting frame is fixedly installed with a limiting side plate, and the lower side of the supporting frame is provided with a first ventilation groove. The first ventilation groove provided on the lower side of the supporting frame is connected with the first ventilation groove provided on the installation connecting plate. An air pump is fixedly installed on the installation connecting plate, and the output port of the air pump is connected with the first ventilation groove.

[0010] Preferably, a placement frame is placed on the transparent partition, a transparent bottom frame is fixedly installed on the lower side of the placement frame, a light baffle is fixedly installed on one side of the placement frame, and the length and width of the placement frame are the same as those of the transparent partition.

[0011] Preferably, the transport mechanism includes a mounting frame, a movable plate, a transmission motor, a first gear, a first mounting block, a rotating wheel, a first tooth groove, a transmission connecting rod, a placement slot, a sleeve, an air rod, and a second ventilation slot, a movable plate movably mounted in the mounting frame, a transmission motor is fixed at the center position of the lower side of the movable plate, the first gear is fixedly mounted on the output shaft of the transmission motor, three groups of first mounting blocks are fixedly mounted on the upper side of the movable plate, the three groups of first mounting blocks are rotatably mounted on the rotating wheels, an array of first tooth grooves is provided on the middle rotating wheel, the first gear is meshed with the first tooth grooves, transmission connecting rods are installed on the three groups of rotating wheels, damping rubber rings are fixedly mounted on the rotating wheels on both sides, placement slots are provided on both sides of the transparent partition, the shape of the placement slots is adapted to the shape of the mounting frame, and the upper ends of the rotating wheels on both sides are flush with the upper sides of the placement slots.

[0012] Preferably, the transport mechanism includes a sleeve, a gas rod and a second ventilation groove. Two groups of sleeves are fixedly installed in the installation frame. Gas rods are movably installed in the two groups of sleeves. The upper ends of the gas rods are fixedly installed on the movable plate. A second ventilation groove is provided on the lower side of the installation frame. The two groups of sleeves are connected to the second ventilation groove, and the second ventilation groove is connected to the first ventilation groove.

[0013] Preferably, the transport mechanism includes a fixed angle block, a first screw and a first screw sleeve. Fixed angle blocks are fixedly installed on the upper and lower mounting frames, a first screw is movably inserted in the fixed angle block, and two sets of first screw sleeves are fixedly installed on both sides of the optical inspection box, and the first screw is installed in the first screw sleeve through threads.

[0014] Preferably, the displacement mechanism includes a mounting vertical plate, a movable top plate, a second mounting block, a longitudinal displacement motor, a second gear, a second tooth groove, an annular mounting plate, a mounting side bar, and a roller. The rear side of the optical detection box is provided with a mounting vertical plate, the upper side of the mounting vertical plate is fixedly mounted with a movable top plate, the movable top plate is located on the upper side of the optical detection box, the center position of the upper end of the rear side of the optical detection box is fixedly mounted with a second mounting block, the longitudinal displacement motor is fixedly mounted on the second mounting block, the second gear is rotatably mounted on the second mounting block, and the output shaft of the longitudinal displacement motor is connected to the first gear. The two gears are fixedly connected, and a second tooth groove is provided in an array on the lower side of the movable top plate. The second gear and the second tooth groove are meshed with each other. The lower side of the movable top plate does not contact the upper side of the optical detection box. An annular mounting plate is fixedly installed on the mounting vertical plate, and the left and right sides of the annular mounting plate are located at the left and right sides of the optical detection box. Mounting side strips are fixedly installed on the left and right sides of the optical detection box, and rollers are rotatably installed on the opposite sides of the mounting side strips. The rollers are in contact with the upper and lower sides of the annular mounting plate, and the annular mounting plate does not contact the side surfaces of the optical detection box.

[0015] Preferably, the displacement mechanism includes a first movable groove, a first guide rod, a first connecting rod, a movable rod, a second connecting rod, a first slider, and a power supply mounting box. The annular mounting plate is provided with a first movable groove, a first guide rod is fixedly installed in the first movable groove, a first connecting rod is provided on the rear side of the camera movable frame, the camera movable frames are fixedly installed on the first connecting rod, the camera mounting blocks are fixedly installed with movable rods, the movable rods are movably inserted on the first connecting rod, the movable rods are fixedly connected through the second connecting rod, a first slider is fixedly installed on the second connecting rod, the first slider is movably sleeved on the first guide rod, and power supply mounting boxes are fixedly installed on the upper and lower sides of the second connecting rod.

[0016] Preferably, the displacement mechanism includes a second slider, a third slider, a second screw sleeve, a limit frame, a second screw, a lateral displacement motor, a second guide rod, and a second movable slot. The second slider is fixedly installed on the upper side of the first connecting rod, and the third slider is fixedly installed on the lower side of the first connecting rod. The second screw sleeve is fixedly installed in the second slider. The upper and lower ends of the rear side of the optical detection box are fixedly installed with a limit frame, and the second slider and the third slider are both slidably installed in the limit frame. The second screw is rotatably installed in the upper limit frame, and a lateral displacement motor is fixedly installed on one side of the upper limit frame, the output shaft of the lateral displacement motor is fixedly connected to the second screw, the second screw sleeve is threadedly sleeved on the second screw, and the second guide rod is fixedly installed in the lower limit frame. The third slider is movably sleeved on the second guide rod. The rear array of the optical detection box is provided with a second movable slot, and the rear end of the camera movable frame slides in the second movable slot.

[0017] Preferably, the lower array of the camera movable frame is provided with an installation groove, and a side light is fixedly installed in the installation groove. The side light is inclined toward the detection camera, and a pressure sensor is provided on the upper side of the side light. The camera mounting block is in contact with the pressure sensor, and a backlight is fixedly installed on the upper side of the camera mounting block.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention uses multiple camera movable frames to load camera mounting blocks and detection cameras, thereby enabling the device to detect multiple groups of PCB boards at a time, thereby increasing the device's detection efficiency. Moreover, the movements of the multiple camera movable frames are all controlled by a displacement mechanism, and the movements of all camera movable frames are synchronized. During the detection process, images of the same position of multiple groups of PCBs can be displayed simultaneously. During the detection process, workers can compare multiple groups of images at a time, making it easier to find PCB problems in the comparison, thereby improving the worker's detection efficiency and alleviating the worker's work pressure. The main structure of the displacement mechanism provided in the device is outside the optical detection box and does not occupy the detection space inside the optical detection box.

[0020] 2. The present invention is also provided with a receiving mechanism and a transport mechanism to quickly load and unload PCB boards, further improving the efficiency of the equipment in detecting PCB boards. The equipment is also provided with a placement frame and a transparent bottom frame for protective loading of PCB boards, so that the PCB boards can be protected during the displacement process, and the PCB boards can also be positioned during loading, so that the position of the PCB boards after imaging is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification, are used to explain the principles of the present disclosure. Obviously, the drawings described below are only some embodiments of the present disclosure, and those skilled in the art can derive other drawings based on these drawings without inventive effort. In the drawings:

[0022] FIG1 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0023] FIG2 is a schematic cross-sectional view of the structure of the receiving mechanism provided in an embodiment of the present invention;

[0024] FIG3 is a schematic cross-sectional view of the structure of the transport mechanism according to an embodiment of the present invention;

[0025] FIG4 is a schematic diagram of structural separation at a placement frame according to an embodiment of the present invention;

[0026] FIG5 is a schematic cross-sectional view of the structure of the displacement mechanism provided in an embodiment of the present invention;

[0027] FIG6 is a schematic diagram of the structural separation of the displacement mechanism provided by an embodiment of the present invention;

[0028] FIG7 is a bottom view schematic diagram of the structure of the camera movable frame provided by an embodiment of the present invention;

[0029] FIG8 is a schematic structural diagram of a vertical plate installation according to an embodiment of the present invention;

[0030] FIG9 is a partial enlarged schematic diagram of A in FIG5 according to an embodiment of the present invention;

[0031] FIG10 is a partial enlarged schematic diagram of B in FIG7 provided by an embodiment of the present invention.

[0032] 1. Optical detection box; 2. Transparent partition; 3. Camera movable frame; 4. Camera mounting block; 5. Detection camera; 6. Undertaking mechanism; 601. Mounting plate; 602. Undertaking frame; 603. Discharge slot; 604. Limiting side plate; 605. First ventilation slot; 606. Air pump; 7. Transport mechanism; 701. Mounting frame; 702. Movable plate; 703. Transmission motor; 704. First gear; 705. First mounting block; 706. Rotating wheel; 707. First tooth groove; 708. Transmission connecting rod; 709. Placement slot; 710. Sleeve; 711. Gas rod; 712. Second ventilation slot; 713. Fixed angle block; 714. First screw; 715. First screw sleeve; 8. Displacement mechanism; 801. Mounting vertical plate; 802. Movable plate Top plate; 803, second mounting block; 804, longitudinal displacement motor; 805, second gear; 806, second tooth groove; 807, annular mounting plate; 808, mounting side strip; 809, roller; 810, first movable groove; 811, first guide rod; 812, first connecting rod; 813, movable rod; 814, second connecting rod; 815, first slider; 816, power supply mounting box; 817, second slider; 818, third slider; 819, second screw sleeve; 820, limit frame; 821, second screw; 822, lateral displacement motor; 823, second guide rod; 824, second movable groove; 9, placement frame; 10, transparent bottom frame; 11, light baffle; 12, mounting groove; 13, side light; 14, pressure sensor; 15, backlight. DETAILED DESCRIPTION

[0033] To make the objectives, technical solutions, and advantages of the present disclosure more clear, the present disclosure will be further described in detail below with reference to the accompanying drawings. It is apparent that the embodiments described are only a portion of the embodiments of the present disclosure, rather than all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present disclosure without creative effort are intended to fall within the scope of protection of the present disclosure.

[0034] The terms used in the embodiments of the present disclosure are for the purpose of describing specific embodiments only and are not intended to limit the present disclosure. The singular forms "a," "the," and "the" used in the embodiments of the present disclosure and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. "A variety of" generally includes at least two, and other quantifiers are similar.

[0035] It should be understood that although the terms "first," "second," "third," etc. may be used to describe in the present disclosure, these descriptions should not be limited to these terms. These terms are only used to distinguish the objects being described. For example, without departing from the scope of the present disclosure, the first may also be referred to as the second, and similarly, the second may also be referred to as the first. In addition, the terms "first," "second," "third," etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0036] In the description of this disclosure, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present disclosure based on the specific circumstances.

[0037] It should also be noted that the terms "include," "comprises," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a product or device comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such product or device. In the absence of further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the product or device comprising the element.

[0038] Optional embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0039] See also Figure 1-10 The present invention provides a technical solution: an automatic detection machine for defects in integrated circuit PCB boards, comprising an optical detection box 1, wherein an array of transparent partitions 2 are fixedly installed in the optical detection box 1, and a camera movable frame 3 is movably installed on the upper side of each transparent partition 2, and a camera mounting block 4 is movably installed in the camera movable frame 3, and a detection camera 5 is fixedly installed in the camera mounting block 4;

[0040] The receiving mechanism 6 includes a mounting plate 601, a receiving frame 602, and a first ventilation slot 605. The mounting plate 601 is provided on one side of the optical inspection box 1. The receiving frame 602 is fixedly mounted on the mounting plate 601 in an array. The mounting plate 601 has a first ventilation slot 605 formed therein.

[0041] The transport mechanism 7 includes a mounting frame 701 and a rotating wheel 706. The mounting frame 701 is fixedly mounted on the receiving frame 602. The rotating wheel 706 is movably mounted in the mounting frame 701.

[0042] The displacement mechanism 8 includes a mounting plate 801 and a movable rod 813. The mounting plate 801 is movably mounted on the optical inspection box 1, and the movable rod 813 is movably mounted on the mounting plate 801. The device is provided with multiple groups of transparent partitions 2, which cooperate with the camera movable frame 3 that can move synchronously, so that the device has the ability to detect multiple groups of PCB boards at a time, thereby improving the efficiency of the device in detecting PCB boards. In addition, during the detection process, the positions of the PCB boards photographed by the detection camera 5 are the same, so that the staff can better compare and troubleshoot, reduce the staff's work pressure, and improve work efficiency. In addition, the device is also provided with a receiving mechanism 6 and a transportation mechanism 7, which can conveniently load and unload PCB boards, increasing the convenience of the device when in use. The device is also provided with a placement frame 9 for protective loading of PCB boards, thereby increasing the stability of the PCB boards during detection.

[0043] Furthermore, the receiving mechanism 6 includes an installation connecting plate 601, a receiving frame 602, a discharge groove 603, a limiting side plate 604, a first ventilation groove 605 and an air pump 606. The upper side of the receiving frame 602 is in the same plane as the upper side of the transparent partition 2. The spacing between the two groups of receiving frames 602 on the same layer is the same as the width of the transparent partition 2. The receiving frame 602 is provided with a discharge groove 603, and the edge of the upper side of the discharge groove 603 is rounded. The outer side of the receiving frame 602 is fixedly installed with a limiting side plate 604. The lower side of the receiving frame 602 is provided with a first ventilation groove 605. The first ventilation groove 605 provided on the lower side of the receiving frame 602 is connected to the first ventilation groove 605 provided on the installation connecting plate 601. The installation connecting plate 601 is fixedly installed with an air pump 606, and the output port of the air pump 606 is connected to the first ventilation groove 605. The specific schematic diagram of the structure is as follows: Figure 2 The main function of this structure is to receive PCB boards. The upper surface of the receiving frame 602 is smooth, and the placement frame 9 can slide conveniently on it. When the placement frame 9 is placed on the upper side of the receiving frame 602, the edge of the placement frame 9 abuts against the limiting side plate 604, thereby making the movement of the placement frame 9 more stable, and avoiding the problem of the placement frame 9 being stuck and unable to move due to the tilt of the placement frame 9. The discharge groove 603 is opened so that when in use, the staff's hand can be placed on the lower side of the placement frame 9 through the discharge groove 603, and then the PCB board placed on the placement frame 9 can be lifted up, so that the PCB board can be easily detached from the placement frame 9, increasing the convenience of using the equipment. In addition, the first ventilation groove 605 and the air pump 606 provided by the receiving mechanism 6 provide conditions for the subsequent up and down movement of the rotating wheel 706.

[0044] Furthermore, a placement frame 9 is placed on the transparent partition 2, a transparent bottom frame 10 is fixedly installed on the lower side of the placement frame 9, and a light blocking plate 11 is fixedly installed on one side of the placement frame 9. The length and width of the placement frame 9 are the same as those of the transparent partition 2. The specific schematic diagram of this structure is as follows: Figure 4 The main function of this structure is to provide protective support for the PCB. The upper edges of the placement frame 9 are all arc-shaped, allowing the PCB to be guided during placement and accurately placed on the transparent bottom frame 10. The transparent bottom frame 10 is transparent so that the back of the PCB can be illuminated by the backlight 15, allowing some of the internal structures of the PCB to be revealed under the illumination of the backlight 15, thereby increasing the functionality of the device during use. The shape of the light shield 11 is adapted to the shape of the support mechanism 6 and the transport mechanism 7, and can completely shield the front side of the optical inspection box 1, thereby making the interior of the optical inspection box 1 darker, allowing optical inspection to proceed normally.

[0045] Furthermore, the transport mechanism 7 includes a mounting frame 701, a movable plate 702, a transmission motor 703, a first gear 704, a first mounting block 705, a rotating wheel 706, a first tooth groove 707, a transmission connecting rod 708, a placement groove 709, a sleeve 710, a gas rod 711, and a second ventilation groove 712. The movable plate 702 is movably mounted in the mounting frame 701, the transmission motor 703 is fixed at the center position of the lower side of the movable plate 702, the first gear 704 is fixedly mounted on the output shaft of the transmission motor 703, and the upper side of the movable plate 702 is fixedly mounted. Three sets of first mounting blocks 705 are installed, and each of the three sets of first mounting blocks 705 is rotatably mounted with a rotating wheel 706. The middle rotating wheel 706 is provided with an array of first tooth grooves 707, and the first gear 704 is engaged with the first tooth grooves 707. A transmission connecting rod 708 is installed on each of the three sets of rotating wheels 706. Damping rubber rings are fixedly installed on the rotating wheels 706 on both sides. A placement groove 709 is provided on both sides of the transparent partition 2. The shape of the placement groove 709 is adapted to the shape of the mounting frame 701. The upper ends of the rotating wheels 706 on both sides are flush with the upper sides of the placement groove 709. The specific schematic diagram of this structure is as follows: Figure 3 The main function of this structure is to transport the placement frame 9. The specific shape of the first mounting block 705 is two groups of blocks with rounded upper ends. The rotating wheel 706 is rotatably installed in the first mounting block 705, but the central part of the rotating wheel 706 is empty. A transmission connecting rod 708 is rotatably installed in the middle. The function of the transmission connecting rod 708 is transmission. The function of the middle rotating wheel 706 is to drive the rotating wheels 706 on both sides. Damping rubber rings are fixedly installed on the rotating wheels 706 on both sides, so the rotating wheels 706 on both sides will contact the edge of the placement frame 9. The width of the edge of the placement frame 9 is compatible with the width of the mounting frame 701, which will not affect the normal shooting of the detection camera 5. In addition, the length of the mounting frame 701 is also smaller than the width of the transparent partition 2, so the placement slot 709 provided will not affect the structural strength of the transparent partition 2.

[0046] Furthermore, the transport mechanism 7 includes a sleeve 710, a gas rod 711, and a second ventilation groove 712. Two sets of sleeves 710 are fixedly installed in the mounting frame 701. Gas rods 711 are movably installed in the two sets of sleeves 710. The upper ends of the gas rods 711 are fixedly installed on the movable plate 702. A second ventilation groove 712 is opened on the lower side of the mounting frame 701. The two sets of sleeves 710 are connected to the second ventilation groove 712, and the second ventilation groove 712 is connected to the first ventilation groove 605. The specific schematic diagram of this structure is as follows: Figure 2 and Figure 3 This structure specifically controls the lifting of the rotating wheel 706, thereby lifting the placement frame 9 for transport, thus increasing the functionality of the device. Using air pressure to raise and lower the rotating wheel 706 allows for synchronous lifting, thereby increasing the efficiency of PCB loading and unloading. Furthermore, this method simplifies control and reduces costs.

[0047] Furthermore, the transport mechanism 7 includes a fixed angle block 713, a first screw 714 and a first screw sleeve 715. The fixed angle blocks 713 are fixedly mounted on the upper and lower mounting frames 701. The first screw 714 is movably inserted into the fixed angle blocks 713. Two sets of first screw sleeves 715 are fixedly mounted on both sides of the optical inspection box 1. The first screw 714 is threadedly mounted in the first screw sleeve 715. The specific schematic diagram of the structure is as follows: Figure 1 、 Figure 3 and Figure 4 The main function of this structure is to allow the receiving mechanism 6 and the transport mechanism 7 to be disassembled. The mounting frame 701 is inserted into the placement slot 709. The rest of the receiving mechanism 6 and the transport mechanism 7 are not connected to the internal structure of the optical inspection box 1. When disassembly is required, the first screw 714 can be unscrewed to complete the disassembly. Therefore, this structure can realize the convenient disassembly of the receiving mechanism 6 and the transport mechanism 7, thereby realizing the convenient replacement and maintenance of the receiving mechanism 6 and the transport mechanism 7, increasing the functionality of the equipment during use and the convenience of maintenance.

[0048] Furthermore, the displacement mechanism 8 includes a mounting vertical plate 801, a movable top plate 802, a second mounting block 803, a longitudinal displacement motor 804, a second gear 805, a second tooth groove 806, an annular mounting plate 807, a mounting side bar 808, and a roller 809. The rear side of the optical detection box 1 is provided with a mounting vertical plate 801, and the upper side of the mounting vertical plate 801 is fixedly mounted with a movable top plate 802. The movable top plate 802 is located on the upper side of the optical detection box 1. The center position of the upper end of the rear side of the optical detection box 1 is fixedly mounted with a second mounting block 803. The longitudinal displacement motor 804 is fixedly mounted on the second mounting block 803. The second gear 805 is rotatably mounted on the second mounting block 803. The longitudinal displacement motor 804 is fixedly mounted on the second mounting block 803. The output shaft of 04 is fixedly connected to the second gear 805. The lower side of the movable top plate 802 is provided with a second tooth groove 806. The second gear 805 and the second tooth groove 806 are meshed. The lower side of the movable top plate 802 does not contact the upper side of the optical detection box 1. The mounting vertical plate 801 is fixedly mounted with an annular mounting plate 807. The left and right sides of the annular mounting plate 807 are located on the left and right sides of the optical detection box 1. The left and right sides of the optical detection box 1 are fixedly mounted with mounting side bars 808. The opposite sides of the mounting side bars 808 are rotatably mounted with rollers 809. The rollers 809 are in contact with the upper and lower sides of the annular mounting plate 807. The annular mounting plate 807 does not contact the side of the optical detection box 1. The specific schematic diagram of this structure is as follows: Figure 5 and Figure 8 The main function of this structure is to enable stable movement of the mounting riser 801, thereby driving the longitudinal movement of the camera mounting block 4. The advantage of this structure is that the longitudinal movement of the camera mounting block 4 is achieved outside the optical inspection box 1, without occupying the space inside the optical inspection box 1, thus allowing optical inspection inside the optical inspection box 1 to proceed normally.

[0049] Furthermore, the displacement mechanism 8 includes a first movable groove 810, a first guide rod 811, a first connecting rod 812, a movable rod 813, a second connecting rod 814, a first slider 815, and a power supply mounting box 816. The annular mounting plate 807 is provided with a first movable groove 810, and a first guide rod 811 is fixedly mounted in the first movable groove 810. A first connecting rod 812 is provided on the rear side of the camera movable frame 3. The camera movable frames 3 are all fixedly mounted on the first connecting rod 812. The camera mounting blocks 4 are all fixedly mounted with movable rods 813. The movable rods 813 are all movably inserted into the first connecting rod 812. The movable rods 813 are fixedly connected through the second connecting rod 814. A first slider 815 is fixedly mounted on the second connecting rod 814. The first slider 815 is movably sleeved on the first guide rod 811. The power supply mounting boxes 816 are fixedly mounted on both the upper and lower sides of the second connecting rod 814. The specific schematic diagram of the structure is as follows: Figure 6The main function of this structure is to enable the camera mounting block 4 to move with the mounting riser 801 without affecting the lateral movement of the camera movable frame 3. The movable rod 813 is hollow and connects the circuits of the detection camera 5 and the backlight 15. It is installed in the power supply installation box 816. The power supply installation box 816 is equipped with a power supply and controller. This ensures that the control of the detection camera 5 and the backlight 15 is not affected by the movement of the camera mounting block 4 and the camera movable frame 3, thereby increasing the stability of the device during use.

[0050] Furthermore, the displacement mechanism 8 includes a second slider 817, a third slider 818, a second screw sleeve 819, a limit frame 820, a second screw 821, a lateral displacement motor 822, a second guide rod 823, and a second movable groove 824. The second slider 817 is fixedly installed on the upper side of the first connecting rod 812, and the third slider 818 is fixedly installed on the lower side of the first connecting rod 812. The second screw sleeve 819 is fixedly installed in the second slider 817. The upper and lower ends of the rear side of the optical detection box 1 are fixedly installed with the limit frame 820, and the second slider 817 and the third slider 818 are slidably installed in the limit frame. 820, a second screw 821 is rotatably mounted in the upper limit frame 820, a lateral displacement motor 822 is fixedly mounted on one side of the upper limit frame 820, the output shaft of the lateral displacement motor 822 is fixedly connected to the second screw 821, the second screw sleeve 819 is threadedly sleeved on the second screw 821, a second guide rod 823 is fixedly mounted in the lower limit frame 820, the third slider 818 is movably sleeved on the second guide rod 823, a second movable slot 824 is opened on the rear array of the optical detection box 1, and the rear end of the camera movable frame 3 slides in the second movable slot 824. The specific schematic diagram of this structure is as follows: Figure 5 and Figure 9 The main function of this structure is to control the lateral movement of the camera mounting block 4. Similarly, this structure is also arranged on the outside of the optical detection box 1, and the lateral movement of the camera movable frame 3 will not affect the longitudinal movement of the camera mounting block 4, which increases the functionality of the equipment when used.

[0051] Furthermore, the lower array of the camera movable frame 3 is provided with a mounting groove 12, in which a side light 13 is fixedly installed. The side light 13 is tilted toward the detection camera 5. A pressure sensor 14 is provided on the upper side of the side light 13. The camera mounting block 4 contacts the pressure sensor 14. A backlight 15 is fixedly installed on the upper side of the camera mounting block 4. The specific schematic diagram of the structure is as follows: Figure 7 and Figure 10The main function of this structure is to provide sufficient lighting for the PCB board. The side light 13 can realize surround-shaped side lighting, thereby reducing the generation of shadows, and the backlight 15 can realize backlighting of the PCB board through the transparent partition 2, so that some internal details of the PCB board can be displayed, increasing the functionality of the device when in use, and the pressure sensor 14 can generate corresponding lighting when the camera mounting block 4 moves, so that there is no need to install extra lights on the camera mounting block 4, increasing the convenience of using the device.

[0052] Working principle: When loading a PCB board, the present invention places the PCB board on the placement frame 9, and then places it on the transparent bottom frame 10 under the guidance of the slope of the placement frame 9. Then, the placement frame 9 is placed on the receiving frame 602. At this time, the edge of the placement frame 9 is against the edge of the limiting side plate 604, which limits the position of the placement frame 9. Then, the air pump 606 is started, and air enters the second ventilation groove 712 from the first ventilation groove 605 and fills the sleeve 710, causing the air rod 711 to rise. At this time, the movable plate 702 rises, causing the rotating wheel 706 on the front side to contact the placement frame 9 and slightly lift the placement frame 9, and then the transmission is started. The motor 703 and the output shaft of the transmission motor 703 rotate to rotate the first gear 704, thereby driving the middle rotating wheel 706 to rotate through the engagement between the first gear 704 and the first tooth groove 707, and driving the other two sets of rotating wheels 706 to rotate through the transmission of the transmission connecting rod 708, thereby driving the placement frame 9 to move through the friction between the rotation of the rotating wheel 706 and the placement frame 9, so that the placement frame 9 is placed on the transparent partition 2, so that the placement frame 9 is in contact with the edge of the optical inspection box 1, and the light baffle 11 closes the front side of the optical inspection box 1, and then the air pump 606 draws air to make the rotating wheel 706 descend, and the descending principle is the same as above.

[0053] Then, the displacement mechanism 8 is started to control the movement of the camera mounting block 4 so that the detection camera 5 can detect the PCB board, and the longitudinal displacement motor 804 is started. The output shaft of the longitudinal displacement motor 804 rotates to drive the second gear 805 to rotate. The second gear 805 rotates and drives the movable top plate 802 to move longitudinally through the engagement between the second tooth groove 806. At this time, the annular mounting plate 807 will move between the mounting side strips 808, and the roller 809 will rotate to assist the annular mounting plate 807 to move. Since the first slider 815 is sleeved on the first guide rod 811, the annular mounting plate 807 will pull the second connecting rod 811 when it moves. 4, thereby causing the movable rod 813 connected to the second connecting rod 814 and the camera mounting block 4 connected to the movable rod 813 to move. At this time, the camera mounting block 4 slides on the camera movable frame 3, and the lateral displacement motor 822 is started. The output shaft of the lateral displacement motor 822 rotates to drive the second screw 821 to rotate, so that the first connecting rod 812 drives the second slider 817 to move through the threaded action between it and the second screw sleeve 819. At this time, the first connecting rod 812 moves laterally and drives the camera movable frame 3 fixed thereto to move laterally, thereby realizing any movement of the camera mounting block 4 on the horizontal plane.

[0054] When the camera mounting block 4 moves, the camera mounting block 4 will contact the pressure sensor 14. The pressure sensor 14 will control the side light 13 to turn on under the pressure, thereby realizing side illumination. During optical inspection, the backlight 15 is in the on state, thereby illuminating the back of the upper PCB board through the transparent partition 2. With the combination of side illumination and back illumination, it is difficult for the PCB board to have shadows, and it can be visually inspected more comprehensively.

[0055] After the inspection is completed, the wheel 706 moves up to contact the placement frame 9 and slightly lift the placement frame 9, and then the wheel 706 rotates to move the placement frame 9 onto the receiving rack 602. After the movement is completed, the staff will pass their hands through the discharge slot 603 to lift the PCB board and then remove the PCB board.

[0056] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure 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 various embodiments of the present disclosure.

Claims

1. An automatic inspection machine for defects in integrated circuit PCB boards, comprising an optical inspection box (1), wherein an array of transparent partitions (2) are fixedly mounted in the optical inspection box (1), and characterized in that: A camera movable frame (3) is movably mounted on the upper side of each transparent partition (2), a camera mounting block (4) is movably mounted in the camera movable frame (3), and a detection camera (5) is fixedly mounted in the camera mounting block (4); A receiving mechanism (6), the receiving mechanism (6) comprising a mounting connecting plate (601), a receiving frame (602) and a first ventilation groove (605), the mounting connecting plate (601) being arranged on one side of the optical detection box (1), the receiving frame (602) being fixedly mounted in an array on the mounting connecting plate (601), and the mounting connecting plate (601) being provided with a first ventilation groove (605); A transport mechanism (7), the transport mechanism (7) comprising a mounting frame (701) and a rotating wheel (706), the mounting frame (701) being fixedly mounted on the receiving frame (602), and a rotating wheel (706) being movably mounted in the mounting frame (701); A displacement mechanism (8), the displacement mechanism (8) comprising a mounting vertical plate (801) and a movable rod (813), the mounting vertical plate (801) being movably mounted on the optical detection box (1), and the movable rod (813) being movably mounted on the mounting vertical plate (801); The receiving mechanism (6) comprises a mounting plate (601), a receiving frame (602), a discharge groove (603), a limiting side plate (604), a first ventilation groove (605) and an air pump (606). The upper side of the mounting plate (601) and the upper side of the transparent partition (2) are in the same plane. The spacing between the two groups of the receiving frames (602) on the same layer is the same as the width of the transparent partition (2). The receiving frame (602) is provided with a discharge groove (603). The upper side of the discharge groove (603) is provided with a side plate (604). The edges are rounded, and the outer sides of the receiving frame (602) are fixedly installed with limited side plates (604). The lower sides of the receiving frame (602) are provided with first ventilation grooves (605). The first ventilation grooves (605) provided on the lower sides of the receiving frame (602) are connected to the first ventilation grooves (605) provided on the installation connecting plate (601). An air pump (606) is fixedly installed on the installation connecting plate (601), and the output port of the air pump (606) is connected to the first ventilation grooves (605). The transport mechanism (7) comprises a mounting frame (701), a movable plate (702), a transmission motor (703), a first gear (704), a first mounting block (705), a rotating wheel (706), a first tooth groove (707), a transmission connecting rod (708), a placement groove (709), a sleeve (710), an air rod (711), and a second ventilation groove (712). The movable plate (702) is movably mounted in the mounting frame (701), the transmission motor (703) is fixed at the center position of the lower side of the movable plate (702), the first gear (704) is fixedly mounted on the output shaft of the transmission motor (703), and the movable plate (702) is fixedly mounted on the upper side. Three groups of first mounting blocks (705) are provided, and rotating wheels (706) are rotatably mounted on the three groups of first mounting blocks (705). The middle rotating wheel (706) is provided with an array of first tooth grooves (707), and the first gear (704) is meshed with the first tooth grooves (707). Transmission connecting rods (708) are provided on the three groups of rotating wheels (706). Damping rubber rings are fixedly mounted on the rotating wheels (706) on both sides. Placement grooves (709) are provided on both sides of the transparent partition (2). The shape of the placement grooves (709) is adapted to the shape of the mounting frame (701), and the upper ends of the rotating wheels (706) on both sides are flush with the upper sides of the placement grooves (709).

2. The automatic integrated circuit PCB board defect detection machine according to claim 1, characterized in that: A placement frame (9) is placed on the transparent partition (2), a transparent bottom frame (10) is fixedly mounted on the lower side of the placement frame (9), a light blocking plate (11) is fixedly mounted on one side of the placement frame (9), and the length and width of the placement frame (9) are the same as those of the transparent partition (2).

3. The automatic integrated circuit PCB board defect detection machine according to claim 1, characterized in that: The transport mechanism (7) comprises a sleeve (710), a gas rod (711) and a second ventilation groove (712); two groups of sleeves (710) are fixedly installed in the installation frame (701); gas rods (711) are movably installed in the two groups of sleeves (710); the upper ends of the gas rods (711) are fixedly installed on the movable plate (702); a second ventilation groove (712) is provided on the lower side of the installation frame (701); the two groups of sleeves (710) are connected to the second ventilation groove (712), and the second ventilation groove (712) is connected to the first ventilation groove (605).

4. The automatic integrated circuit PCB board defect detection machine according to claim 1, characterized in that: The transport mechanism (7) comprises a fixed angle block (713), a first screw (714) and a first screw sleeve (715); the fixed angle blocks (713) are fixedly mounted on the upper and lower mounting frames (701); the first screw (714) is movably inserted into the fixed angle block (713); two sets of first screw sleeves (715) are fixedly mounted on both sides of the optical inspection box (1); the first screw (714) is threadedly mounted in the first screw sleeve (715).

5. The automatic integrated circuit PCB board defect detection machine according to claim 1, characterized in that: The displacement mechanism (8) comprises a mounting vertical plate (801), a movable top plate (802), a second mounting block (803), a longitudinal displacement motor (804), a second gear (805), a second tooth groove (806), an annular mounting plate (807), a mounting side bar (808), and a roller (809). The rear side of the optical detection box (1) is provided with a mounting vertical plate (801), the upper side of the mounting vertical plate (801) is fixedly mounted with a movable top plate (802), the movable top plate (802) is located on the upper side of the optical detection box (1), the center position of the upper end of the rear side of the optical detection box (1) is fixedly mounted with a second mounting block (803), the longitudinal displacement motor (804) is fixedly mounted on the second mounting block (803), the second gear (805) is rotatably mounted on the second mounting block (803), and the longitudinal displacement motor (80 4) is fixedly connected to the second gear (805), the lower side array of the movable top plate (802) is provided with a second tooth groove (806), the second gear (805) and the second tooth groove (806) are meshed, the lower side of the movable top plate (802) does not contact the upper side of the optical detection box (1), the mounting vertical plate (801) is fixedly mounted with an annular mounting plate (807), the left and right sides of the annular mounting plate (807) are located at the left and right sides of the optical detection box (1), the left and right sides of the optical detection box (1) are fixedly mounted with mounting side strips (808), the opposite sides of the mounting side strips (808) are rotatably mounted with rollers (809), the rollers (809) are in contact with the upper and lower sides of the annular mounting plate (807), and the annular mounting plate (807) does not contact the side of the optical detection box (1).

6. The automatic integrated circuit PCB board defect detection machine according to claim 5, characterized in that: The displacement mechanism (8) comprises a first movable groove (810), a first guide rod (811), a first connecting rod (812), a movable rod (813), a second connecting rod (814), a first slider (815), and a power supply mounting box (816). The annular mounting plate (807) is provided with a first movable groove (810), a first guide rod (811) is fixedly mounted in the first movable groove (810), a first connecting rod (812) is provided on the rear side of the camera movable frame (3), and the camera movable frame (3) is fixedly mounted. Mounted on the first connecting rod (812), the camera mounting block (4) is fixedly mounted with a movable rod (813), the movable rod (813) is movably inserted on the first connecting rod (812), the movable rod (813) is fixedly connected via a second connecting rod (814), a first slider (815) is fixedly mounted on the second connecting rod (814), the first slider (815) is movably sleeved on the first guide rod (811), and a power supply mounting box (816) is fixedly mounted on both the upper and lower sides of the second connecting rod (814).

7. The automatic integrated circuit PCB board defect detection machine according to claim 6, characterized in that: The displacement mechanism (8) comprises a second slider (817), a third slider (818), a second screw sleeve (819), a limit frame (820), a second screw rod (821), a lateral displacement motor (822), a second guide rod (823), and a second movable groove (824). The second slider (817) is fixedly mounted on the upper side of the first connecting rod (812), the third slider (818) is fixedly mounted on the lower side of the first connecting rod (812), and the second screw sleeve (819) is fixedly mounted inside the second slider (817). The limit frame (820) is fixedly mounted on the upper and lower ends of the rear side of the optical detection box (1), and the second slider (817) and the third slider (818) are both slidably mounted on the limit frame (8 20), a second screw (821) is rotatably installed in the upper limit frame (820), a lateral displacement motor (822) is fixedly installed on one side of the upper limit frame (820), an output shaft of the lateral displacement motor (822) is fixedly connected to the second screw (821), the second screw sleeve (819) is sleeved on the second screw (821) through a thread, a second guide rod (823) is fixedly installed in the lower limit frame (820), the third slider (818) is movably sleeved on the second guide rod (823), a second movable groove (824) is opened in the rear array of the optical detection box (1), and the rear end of the camera movable frame (3) slides in the second movable groove (824).

8. The automatic integrated circuit PCB board defect detection machine according to claim 1, characterized in that: The lower array of the camera movable frame (3) is provided with a mounting groove (12), a side light (13) is fixedly installed in the mounting groove (12), the side light (13) is inclined toward the detection camera (5), a pressure sensor (14) is provided on the upper side of each side light (13), the camera mounting block (4) is in contact with the pressure sensor (14), and a backlight (15) is fixedly installed on the upper side of the camera mounting block (4).

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