X-ray emission source movable type PCB X-ray detection equipment and detection method

Abstract

The invention discloses X-ray emission source movable type PCB (printed circuit board) X-ray detection equipment and detection method, and the X-ray detection equipment comprises an X-ray emission source moving system, an X-ray detector moving system and a PCB moving system; the X-ray emission source moving system comprises a workbench, an emission source X-axis moving device, an emission source Y-axis moving device, an emission source sliding seat and an X-ray emission source; the X-ray detector moving system comprises a stand column, a detector X-axis moving device, a detector Y-axis moving device, a detector sliding seat, a detector angle adjuster, an X-ray detector and a CCD camera. The PCB moving system comprises a PCB lifting device, a PCB X-axis moving device, a PCB Y-axis moving device and a PCB positioning device. According to the X-ray detector, the height, the X-axis direction position and the Y-axis direction position of the PCB can be adjusted by adjusting the angle of the X-ray detector, the PCB can be stably borne through the carbon fiber supporting thin plate, and the blocking effect on X rays is extremely small.

Description

Technical Field

[0001] This invention relates to the field of PCB board inspection equipment technology, and in particular to a mobile X-ray inspection device and method for PCB boards with an X-ray emission source. Background Technology

[0002] After the PCB board is manufactured, it needs to undergo surface inspection and internal inspection. Surface inspection is relatively easy and can usually be carried out using a vision lens. However, the internal structure of the PCB board, such as internal layered circuits, holes, and materials, cannot be inspected by a vision lens and requires the use of equipment such as X-ray inspection equipment.

[0003] In existing technologies, X-ray inspection equipment for PCB boards typically includes an X-ray emitting system, an X-ray receiving system, and a PCB board moving system. The X-ray emitting system is usually located below the PCB board carrying system and includes an X-ray emitting source moving device and an X-ray emitting source mounted on the X-ray emitting source moving device. The X-ray receiving system is usually located above the PCB board carrying system and includes an X-ray detector moving device and an X-ray detector mounted on the X-ray detector moving device. The PCB board carrying system is used to carry the PCB board and position the PCB board between the X-ray emitting source of the X-ray emitting system and the X-ray detector of the X-ray receiving system. During PCB board inspection, the PCB board's position is adjusted using the PCB board support system. The X-ray emission source is positioned directly below the designated inspection location on the PCB board using a moving X-ray source device, and the X-ray detector is positioned directly above the designated inspection location using a moving X-ray detector device. X-rays are then emitted from the emission source towards the inspection location. The X-rays penetrate the designated inspection location sequentially and reach the X-ray detector. The detector transmits the energy distribution data of the detected X-rays to the control system, which determines whether the designated inspection location on the PCB board has passed inspection based on this data. The X-ray inspection equipment, based on the principle of X-ray fluoroscopy, can capture black-and-white images of the internal structure of the PCB board. Analysis and measurement of these images determine the PCB board's compliance.

[0004] However, the X-ray detection equipment in the prior art has the following technical problems: (1) The X-ray emission source moving device of the X-ray emission system usually adopts a screw motor transmission mechanism. The screw motor transmission mechanism has a slow transmission speed, low accuracy, and large vibration. In addition, the X-ray emission source moving device is prone to shaking when moving the X-ray emission source, which further reduces the accuracy; (2) The X-ray detector moving device of the X-ray receiving system usually adopts a screw motor transmission mechanism. The screw motor transmission mechanism has a slow transmission speed, low accuracy, and large vibration. In addition, the X-ray detector moving device is prone to shaking when moving the X-ray detector, which further reduces the accuracy; (3) The X-ray receiving system The X-ray detector can only detect the detailed structure of the PCB board at a fixed vertical angle, and cannot detect the detailed structure of the PCB board at an inclined angle. Therefore, the X-ray detector cannot detect some detailed structures of the PCB board that cannot be detected at a fixed vertical angle. (4) The PCB board support system can only support the PCB board, and cannot lift the PCB board or move the PCB board forward, backward, left and right. It cannot move the PCB board to the most suitable detection position through the PCB board support system. (5) The PCB board support system is usually equipped with a PCB board support mechanism for supporting the PCB board. During detection, the PCB board support mechanism has a large blocking effect on X-rays, which will affect the accuracy of PCB board detection. Summary of the Invention

[0005] The technical problem this invention aims to solve is to address the shortcomings of the prior art by providing a mobile X-ray source PCB board X-ray inspection device. This device's X-ray detector movement system can adjust the angle of the X-ray detector via a detector angle adjuster, enabling the X-ray detector to inspect the detailed structure of the PCB board from different angles. The PCB board movement system can automatically adjust the height, X-axis position, and Y-axis position of the PCB board to move the set inspection position to the most suitable location. Furthermore, the PCB board positioning device of this movement system uses a carbon fiber support plate to support the PCB board. This carbon fiber support plate has high strength, can stably support the PCB board, and has extremely low X-ray absorption, resulting in minimal X-ray blocking and avoiding any impact on the accuracy of PCB board inspection. Simultaneously, this invention also provides an inspection method for the mobile X-ray source PCB board X-ray inspection device.

[0006] To solve the first technical problem mentioned above, the technical solution of the present invention is: an X-ray emission source mobile PCB board X-ray inspection device, including a housing and an X-ray emission source mobile system, an X-ray detector mobile system and a PCB board mobile system installed inside the housing; The X-ray emission source moving system includes a worktable, an X-axis moving device for the emission source, a Y-axis moving device for the emission source, a sliding seat for the emission source, and an X-ray emission source. The X-axis moving device for the emission source is mounted on the worktable, the Y-axis moving device for the emission source is mounted on the X-axis moving device for the emission source, the sliding seat for the emission source is mounted on the Y-axis moving device for the emission source, and the X-ray emission source is mounted on the sliding seat for the emission source. The X-ray emission source can emit X-rays upwards. The X-ray detector moving system includes a column, a detector X-axis moving device, a detector Y-axis moving device, a detector sliding base, a detector angle adjuster, an X-ray detector, and a CCD camera. The column is erected on the worktable. The detector X-axis moving device is mounted on the upper end of the column. The detector Y-axis moving device is mounted on top of the detector X-axis moving device. The detector sliding base is mounted on top of the detector Y-axis moving device. The detector angle adjuster and the CCD camera are respectively mounted on the lower end of the detector sliding base. The X-ray detector is mounted on the lower end of the detector angle adjuster. The detector angle adjuster is used to adjust the angle of the X-ray detector. The X-ray detector is used to detect X-ray energy. The CCD camera is used for visual positioning of the PCB board. The PCB board moving system includes a PCB board lifting device, a PCB board X-axis moving device, a PCB board Y-axis moving device, and a PCB board positioning device. The PCB board lifting device is installed on the side of the column. The PCB board X-axis moving device is installed on top of the PCB board lifting device. The PCB board Y-axis moving device is installed on top of the PCB board X-axis moving device. The PCB board positioning device is equipped with a carbon fiber support plate, which is used to support the PCB board and position the PCB board between the X-ray emission source and the X-ray detector.

[0007] Preferably, the X-axis moving device of the transmitter includes a first X-axis support beam, a first X-axis slide rail, a first X-axis slider, and a first X-axis linear motor. The first X-axis support beam is mounted on the worktable along the X-axis direction, the first X-axis slide rail is mounted on the first X-axis support beam along the X-axis direction, and the first X-axis slider is slidably mounted on the first X-axis slide rail. The first X-axis linear motor is mounted on the side of the first X-axis support beam along the X-axis direction. The first X-axis linear motor includes a first X-axis linear stator and a first X-axis mover that cooperate with each other. The length direction of the first X-axis linear stator is parallel to the first X-axis slide rail. The Y-axis moving device of the transmitter is mounted on the first X-axis slider and the first X-axis mover. Under the driving action of the first X-axis linear motor, it can drive the Y-axis moving device of the transmitter to move back and forth along the X-axis direction.

[0008] Preferably, the transmitter Y-axis moving device includes a first Y-axis support beam, a first Y-axis slide rail, a first Y-axis slider, and a first Y-axis linear motor. The first Y-axis support beam is mounted along the Y-axis direction on the first X-axis slider and the first X-axis mover of the transmitter X-axis moving device. The first Y-axis slide rail is mounted along the Y-axis direction on the first Y-axis support beam, and the first Y-axis slider is slidably mounted on the first Y-axis slide rail. The first Y-axis linear motor is mounted along the Y-axis direction on the side of the first Y-axis support beam. The first Y-axis linear motor includes a first Y-axis linear stator and a first Y-axis mover that cooperate with each other. The length direction of the first Y-axis linear stator is parallel to the first Y-axis slide rail. The transmitter sliding seat is mounted on the first Y-axis slider and the first Y-axis mover. Under the driving action of the first Y-axis linear motor, it can drive the transmitter sliding seat to move back and forth along the Y-axis direction.

[0009] Preferably, the detector X-axis moving device includes two second X-axis support beams and two second X-axis linear motors. Several columns are mounted on both ends of the worktable. One second X-axis support beam is mounted along the X-axis direction on the upper end of one column of the worktable, and the other second X-axis support beam is mounted along the X-axis direction on the upper end of the column of the worktable at the other end. Second X-axis slide rails are mounted on the two second X-axis support beams along the X-axis direction, and second X-axis sliders are mounted on the second X-axis slide rails. The second X-axis sliders can slide back and forth along the second X-axis slide rails. A second X-axis linear motor is mounted on the side of one of the second X-axis support beams along the X-axis direction, and another second X-axis linear motor is mounted on the side of the other second X-axis support beam along the X-axis direction. The second X-axis linear motor includes a second X-axis linear stator and a second X-axis mover that cooperate with each other. The length direction of the second X-axis linear stator is parallel to the second X-axis slide rail. The detector Y-axis moving device is mounted on the second X-axis slider and the second X-axis mover. Under the driving action of the second X-axis linear motor, it can drive the detector Y-axis moving device to move back and forth along the X-axis direction.

[0010] Preferably, the detector Y-axis moving device includes a second Y-axis support beam, a second Y-axis slide rail, a second Y-axis slider, and a second Y-axis linear motor. The second Y-axis support beam is arranged along the Y-axis direction. One end of the second Y-axis support beam is mounted on a second X-axis slider and a second X-axis mover on one of the second X-axis support beams, and the other end of the second Y-axis support beam is mounted on a second X-axis slider and a second X-axis mover on the other second X-axis support beam. The second Y-axis slide rail is mounted on the side of the second Y-axis support beam along the Y-axis direction, and the second Y-axis slider is slidably mounted on the second Y-axis slide rail. The second Y-axis linear motor is mounted on the upper part of the second Y-axis support beam along the Y-axis direction. The second Y-axis linear motor includes a second Y-axis linear stator and a second Y-axis mover that cooperate with each other. The length direction of the second Y-axis linear stator is parallel to the second Y-axis slide rail. The detector sliding seat is mounted on the second Y-axis slider and the second Y-axis mover, and under the driving action of the second Y-axis linear motor, it can drive the detector sliding seat to move back and forth along the Y-axis direction.

[0011] Preferably, the detector angle adjuster includes an adjustment bracket, an angle adjustment motor, an angle adjustment transmission mechanism, and an angle adjustment shaft. The upper end of the adjustment bracket is connected to the lower end of the detector sliding seat. The angle adjustment motor is installed inside the adjustment bracket. The angle adjustment shaft is rotatably installed at the lower end of the adjustment bracket. The upper end of the X-ray detector is connected to the angle adjustment shaft. The angle adjustment transmission mechanism is installed between the motor shaft of the angle adjustment motor and the angle adjustment shaft. Under the driving action of the angle adjustment motor, the angle adjustment shaft and the X-ray detector can be driven to rotate clockwise or counterclockwise through the angle adjustment transmission mechanism to adjust the angle of the X-ray detector.

[0012] Preferably, the PCB board moving system includes two PCB board lifting devices. Several columns are installed on both ends of the worktable. One PCB board lifting device is installed on the side of several columns at one end of the worktable, and the other PCB board lifting device is installed on the side of several columns at the other end of the worktable. The two PCB board lifting devices are positioned opposite each other. Each PCB board lifting device includes a lifting slide rail, a lifting slider, a lifting seat, and a lifting screw drive device. The lifting slide rail is vertically installed on the side of each column. The lifting slider is slidably installed on the lifting slide rail. The lifting seat is installed on the lifting slider. The lifting screw drive device is installed on the side of one of the columns. The power output end of the lifting screw drive device is connected to the lifting seat to drive the lifting seat to rise or fall along the lifting slide rail. The PCB board X-axis moving device is installed on the lifting seat.

[0013] Preferably, the PCB board moving system includes two PCB board X-axis moving devices positioned opposite each other. Each of the two PCB board X-axis moving devices includes a third X-axis support beam, a third X-axis slide rail, a third X-axis slider, an X-axis lead screw drive device, and a PCB board X-axis sliding plate. The third X-axis support beam is mounted on a lifting seat along the X-axis direction. The third X-axis slide rail is mounted on the third X-axis support beam along the X-axis direction. The third X-axis slider is slidably mounted on the third X-axis slide rail. The PCB board X-axis sliding plate is mounted on the third X-axis slider. The X-axis lead screw drive device is mounted on the third X-axis support beam. The power output end of the X-axis lead screw drive device is connected to the PCB board X-axis sliding plate, used to drive the PCB board X-axis sliding plate to move back and forth along the third X-axis slide rail.

[0014] Preferably, the PCB board moving system includes two PCB board Y-axis moving devices positioned opposite each other. Each of the two PCB board Y-axis moving devices includes a third Y-axis support beam, a third Y-axis slide rail, a third Y-axis slider, and a Y-axis lead screw drive device. The two ends of the third Y-axis support beam of one PCB board Y-axis moving device are mounted on one end of the two PCB board X-axis sliding plates, and the two ends of the third Y-axis support beam of the other PCB board Y-axis moving device are mounted on the other end of the two PCB board X-axis sliding plates. The third Y-axis slide rail is mounted on the third Y-axis support beam along the Y-axis direction, and the third Y-axis slider is slidably mounted on the third Y-axis slide rail. The two ends of the PCB board positioning device are mounted on the third Y-axis sliders of the two third Y-axis slide rails. The Y-axis lead screw drive device is mounted on the third Y-axis support beam, and the power output end of the Y-axis lead screw drive device is connected to the PCB board positioning device to drive the PCB board positioning device to move back and forth along the third Y-axis slide rail.

[0015] To solve the second technical problem mentioned above, the technical solution of the present invention is: the detection method of the X-ray emission source mobile PCB board X-ray inspection equipment includes the following method steps: Ⅰ. Place the PCB board to be tested on the carbon fiber support plate of the PCB board positioning device of the PCB board moving system. Adjust the height of the carbon fiber support plate and the PCB board by the PCB board lifting device, adjust the X-axis position of the carbon fiber support plate and the PCB board by the PCB board X-axis moving device, and adjust the Y-axis position of the carbon fiber support plate and the PCB board by the PCB board Y-axis moving device. II. The X-axis moving device of the X-ray emission source moving system drives the emission source slide and the X-ray emission source to move along the X-axis direction, and the Y-axis moving device drives the emission source slide and the X-ray emission source to move along the Y-axis direction, so that the X-ray emission source reaches directly below the set detection position on the PCB board; III. The X-axis moving device of the X-ray detector moving system drives the detector slider, detector angle adjuster, X-ray detector and CCD camera to move along the X-axis direction, and the Y-axis moving device drives the detector slider, detector angle adjuster, X-ray detector and CCD camera to move along the Y-axis direction, so that the X-ray detector reaches directly above the set detection position on the PCB board, and the CCD camera performs visual positioning of the set detection position on the PCB board. IV. An X-ray emission source emits X-rays towards the designated detection position on the PCB board. The X-rays penetrate the carbon fiber support plate and the designated detection position on the PCB board in sequence before reaching the X-ray detector. The X-ray detector transmits the energy distribution data of the detected X-rays to the control system. The control system determines whether the designated detection position on the PCB board is qualified based on the energy distribution data. During the process of the X-ray detector detecting X-rays that have penetrated the designated detection position on the PCB board, for the detailed structure of the PCB board that the X-ray detector cannot detect at a fixed vertical angle, the detector angle adjuster adjusts the angle of the X-ray detector so that the X-ray detector can detect the detailed structure of the PCB board at a set tilt angle. V. When the PCB board has multiple set detection positions, perform detection on each set detection position according to steps II, III, and IV above; after the PCB board detection is completed, open the machine casing and remove the PCB board by a robotic arm or by hand.

[0016] The beneficial effects of the present invention are: (1) Since the X-ray detector moving system of the present invention includes a detector angle adjuster, which is installed at the lower end of the detector sliding seat, and the X-ray detector is installed at the lower end of the detector angle adjuster, and the detector angle adjuster is used to adjust the angle of the X-ray detector, the X-ray detector moving system of the present invention can adjust the angle of the X-ray detector through the detector angle adjuster, so that the X-ray detector can detect the detailed structure of the PCB board from different angles; (2) Since the PCB board moving system of the present invention includes a PCB board lifting device, a PCB board X-axis moving device, a PCB board Y-axis moving device and a PCB board positioning device, the PCB board lifting device is installed on the side of the column, the PCB board X-axis moving device is installed on the PCB board lifting device, the PCB board Y-axis moving device is installed on the PCB board X-axis moving device, and the PCB board positioning device is installed on the PCB board Y-axis moving device. Therefore, the present invention can automatically adjust the height of the PCB board through the PCB board lifting device, and can automatically adjust the X-axis position and Y-axis position of the PCB board through the PCB board X-axis moving device and the PCB board Y-axis moving device, so as to move the set detection position of the PCB board to the most suitable detection position; (3) Since the PCB board positioning device of the present invention is provided with a carbon fiber support plate, the carbon fiber support plate is used to support the PCB board and place the PCB board between the X-ray emission source and the X-ray detector. Therefore, on the one hand, the carbon fiber support plate has high strength and can stably support the PCB board; on the other hand, the carbon fiber support plate has extremely low absorption rate of X-rays and minimal blocking effect on X-rays, which can avoid affecting the accuracy of PCB board detection. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the housing of the present invention.

[0018] Figure 2 This is a first-view overall structural diagram of the present invention after the casing has been removed.

[0019] Figure 3 This is a second-view overall structural diagram of the present invention after the casing has been removed.

[0020] Figure 4 This is a first-view overall structural diagram of the X-ray emission source moving system.

[0021] Figure 5 This is a second-view overall structural diagram of the X-ray emission source moving system.

[0022] Figure 6 This is a diagram showing the distributed structure of an X-ray emission source moving system.

[0023] Figure 7This is a first-view overall structural diagram of the X-ray detector moving system.

[0024] Figure 8 This is a second-view overall structural diagram of the X-ray detector moving system.

[0025] Figure 9 This is a first-view dispersion diagram of the X-ray detector moving system.

[0026] Figure 10 This is a second-view dispersion structure diagram of the X-ray detector moving system.

[0027] Figure 11 This is an overall structural diagram of the detector slider, detector angle adjuster, X-ray detector, CCD camera, second laser rangefinder, and protective housing.

[0028] Figure 12 This is a schematic diagram showing the dispersed structure of the detector slider, detector angle adjuster, X-ray detector, CCD camera, second laser rangefinder, and protective housing.

[0029] Figure 13 This is a first-view diagram of the combined structure of the detector angle adjuster and the X-ray detector.

[0030] Figure 14 This is a structural diagram of the second-view combination of the detector angle adjuster and the X-ray detector.

[0031] Figure 15 This is a structural diagram of the combination of a CCD camera and a second laser rangefinder.

[0032] Figure 16 This is a first-person view of the overall structure of the PCB board moving system.

[0033] Figure 17 This is a second-view overall structural diagram of the PCB board moving system.

[0034] Figure 18 This is a structural diagram of the PCB board lifting device, the third X-axis support beam, the third X-axis slide rail, and the third X-axis slider.

[0035] Figure 19 This is a structural diagram of the PCB board X-axis moving device, the PCB board Y-axis moving device, and the PCB board positioning device. Detailed Implementation

[0036] The structural and working principles of the present invention will be further described in detail below with reference to the accompanying drawings.

[0037] like Figures 1 to 19As shown, this invention is a mobile X-ray inspection device for PCB boards, comprising a housing 1 and an X-ray source moving system 2, an X-ray detector moving system 4, and a PCB board moving system 7 installed within the housing 1. The X-ray source moving system 2 includes a worktable 21, an X-axis moving device 20, a Y-axis moving device 30, a sliding seat 36, and an X-ray source 37. The X-axis moving device 20 is mounted on the worktable 21, and the Y-axis moving device 30 is mounted on the X-axis moving device 36. The X-ray source 37 is mounted on the X-ray source sliding seat 36 and X-ray source 37 can emit X-rays upwards. The X-ray detector moving system 4 includes a column 41, a detector X-axis moving device 40, a detector Y-axis moving device 50, a detector sliding seat 61, a detector angle adjuster 62, an X-ray detector 60, and a CCD camera 63. The column 41 is erected on the worktable 21, and the detector X-axis moving device 40 is mounted on the column. At the upper end of 41, the detector Y-axis moving device 50 is mounted on the detector X-axis moving device 40, the detector sliding seat 61 is mounted on the detector Y-axis moving device 50, the detector angle adjuster 62 and the CCD camera 63 are respectively mounted at the lower end of the detector sliding seat 61, the X-ray detector 60 is mounted at the lower end of the detector angle adjuster 62, the detector angle adjuster 62 is used to adjust the angle of the X-ray detector 60, the X-ray detector 60 is used to detect X-ray energy, and the CCD camera 63 is used to monitor P The PCB board (not shown) is visually positioned. The PCB board moving system 7 includes a PCB board lifting device 70, a PCB board X-axis moving device 80, a PCB board Y-axis moving device 86, and a PCB board positioning device 90. The PCB board lifting device 70 is installed on the side of the column 41. The PCB board X-axis moving device 80 is installed on the PCB board lifting device 70. The PCB board Y-axis moving device 86 is installed on the PCB board X-axis moving device 80. The PCB board positioning device 90 is installed on the PCB board Y-axis moving device 86. The PCB board positioning device 90 is provided with a carbon fiber support plate 91. The carbon fiber support plate 91 is used to support the PCB board and position the PCB board between the X-ray emission source 37 and the X-ray detector 60.

[0038] The present invention includes an X-ray detector moving system 4 comprising a detector angle adjuster 62, which is mounted on the lower end of the detector sliding seat 61. An X-ray detector 60 is mounted on the lower end of the detector angle adjuster 62, and the detector angle adjuster 62 is used to adjust the angle of the X-ray detector 60. Therefore, the X-ray detector moving system 4 of the present invention can adjust the angle of the X-ray detector 60 through the detector angle adjuster 62, enabling the X-ray detector 60 to detect the detailed structure of the PCB board from different angles. The present invention also includes a PCB board moving system 7 comprising a PCB board lifting device 70, a PCB board X-axis moving device 80, a PCB board Y-axis moving device 86, and a PCB board positioning device 90. The PCB board lifting device 70 is mounted on the side of the column 41, the PCB board X-axis moving device 80 is mounted on top of the PCB board lifting device 70, the PCB board Y-axis moving device 86 is mounted on top of the PCB board X-axis moving device 80, and the PCB board positioning device 90 is mounted on top of the PCB board lifting device 70. Above the Y-axis moving device 86, the present invention can automatically adjust the height of the PCB board through the PCB board lifting device 70, and can automatically adjust the X-axis and Y-axis positions of the PCB board through the PCB board X-axis moving device 80 and the PCB board Y-axis moving device 86, so as to move the set detection position of the PCB board to the most suitable detection position. Since the PCB board positioning device 90 is provided with a carbon fiber support plate 91, which is used to support the PCB board and position the PCB board between the X-ray emission source 37 and the X-ray detector 60, the carbon fiber support plate 91 has high strength and can stably support the PCB board. On the other hand, the carbon fiber support plate 91 has extremely low X-ray absorption rate and minimal X-ray blocking effect, which can avoid affecting the accuracy of PCB board detection.

[0039] The detection method of the X-ray emission source mobile PCB board X-ray inspection equipment of the present invention includes the following steps: Ⅰ. Place the PCB board to be tested on the carbon fiber support plate 91 of the PCB board positioning device 90 of the PCB board moving system 7. Adjust the height of the carbon fiber support plate 91 and the PCB board by the PCB board lifting device 70, adjust the X-axis position of the carbon fiber support plate 91 and the PCB board by the PCB board X-axis moving device 80, and adjust the Y-axis position of the carbon fiber support plate 91 and the PCB board by the PCB board Y-axis moving device 86. II. The X-axis moving device of the X-ray source 37 moving system 2 drives the X-ray source sliding seat 36 and the X-ray source 37 to move along the X-axis direction, and the Y-axis moving device 30 drives the X-ray source sliding seat 36 and the X-ray source 37 to move along the Y-axis direction, so that the X-ray source 37 reaches directly below the set detection position of the PCB board; III. The detector X-axis moving device 40 of the X-ray detector moving system 4 drives the detector slide 61, detector angle adjuster 62, X-ray detector 60 and CCD camera 63 to move along the X-axis direction, and the detector Y-axis moving device 50 drives the detector slide 61, detector angle adjuster 62, X-ray detector 60 and CCD camera 63 to move along the Y-axis direction, so that the X-ray detector 60 reaches directly above the set detection position of the PCB board, and the CCD camera 63 performs visual positioning of the set detection position of the PCB board. IV. X-ray emission source 37 emits X-rays towards the designated detection position on the PCB board. After the X-rays pass through the carbon fiber support plate 91 and the designated detection position on the PCB board in sequence, they reach the X-ray detector 60. The X-ray detector 60 transmits the energy distribution data of the detected X-rays to the control system. The control system determines whether the designated detection position on the PCB board is qualified based on the energy distribution data. During the process of the X-ray detector 60 detecting X-rays that have penetrated the designated detection position on the PCB board, for the detailed structure of the PCB board that the X-ray detector 60 cannot detect at a fixed vertical angle, the detector angle adjuster 62 adjusts the angle of the X-ray detector 60 so that the X-ray detector 60 can detect the detailed structure of the PCB board at a set tilt angle. V. When the PCB board has multiple set detection positions, perform detection on each set detection position according to steps II, III, and IV above; after the PCB board detection is completed, open the machine casing 1 and remove the PCB board by a robotic arm or a human hand.

[0040] like Figures 2-6 As shown, the X-axis moving device 20 of the transmitter includes a first X-axis support beam 22, a first X-axis slide rail 23, a first X-axis slider 24, and a first X-axis linear motor 25. The first X-axis support beam 22 is mounted on the worktable 21 along the X-axis direction, the first X-axis slide rail 23 is mounted on the first X-axis support beam 22 along the X-axis direction, and the first X-axis slider 24 is slidably mounted on the first X-axis slide rail 23. The first X-axis linear motor 25 is mounted on the side of the first X-axis support beam 22 along the X-axis direction. The first X-axis linear motor 25 includes a first X-axis linear stator 251 and a first X-axis mover 252 that cooperate with each other. The length direction of the first X-axis linear stator 251 is parallel to the first X-axis slide rail 23. The Y-axis moving device 30 of the transmitter is mounted on the first X-axis slider 24 and the first X-axis mover 252. Under the driving action of the first X-axis linear motor 25, the Y-axis moving device 30 of the transmitter can move back and forth along the X-axis direction. The X-axis moving device 20 of the transmitter of the present invention uses a first X-axis linear motor 25 to drive the Y-axis moving device 30 of the transmitter to move back and forth. The linear motor has fast driving speed, high precision and low vibration.

[0041] like Figures 2-6 As shown, there are two first X-axis support beams 22. Each first X-axis support beam 22 is provided with two parallel first X-axis slide rails 23, and each first X-axis slide rail 23 is provided with two first X-axis sliders 24. The first X-axis linear motor 25 is mounted on the side of one of the first X-axis support beams 22. This structure allows the transmitter Y-axis moving device 30 to be supported by the first X-axis slide rails 23 at four positions, resulting in less swaying during movement, further improving accuracy, and further reducing vibration.

[0042] like Figures 2-6 As shown, the transmitter Y-axis moving device 30 includes a first Y-axis support beam 31, a first Y-axis slide rail 32, a first Y-axis slider 33, and a first Y-axis linear motor 34. The first Y-axis support beam 31 is mounted along the Y-axis direction on the first X-axis slider 24 and the first X-axis mover 252 of the transmitter X-axis moving device 20. The first Y-axis slide rail 32 is mounted along the Y-axis direction on the first Y-axis support beam 31. The first Y-axis slider 33 is slidably mounted on the first Y-axis slide rail 32. A Y-axis linear motor 34 is mounted on the side of the first Y-axis support beam 31 along the Y-axis direction. The first Y-axis linear motor 34 includes a first Y-axis linear stator 341 and a first Y-axis mover 342 that cooperate with each other. The length direction of the first Y-axis linear stator 341 is parallel to the first Y-axis slide rail 32. The transmitter slide seat 36 is mounted on the first Y-axis slider 33 and the first Y-axis mover 342. Under the driving action of the first Y-axis linear motor 34, it can drive the transmitter slide seat 36 to move back and forth along the Y-axis direction. The transmitter Y-axis moving device 30 of the present invention uses a first Y-axis linear motor 34 to drive the transmitter slide seat 36 to move back and forth. The linear motor has high driving speed, high precision, and low vibration.

[0043] like Figures 4-6 As shown, two parallel first Y-axis slide rails 32 are provided on the first Y-axis support beam 31, and two first Y-axis sliders 33 are provided on each first Y-axis slide rail 32. By using two first Y-axis slide rails 32 and four first Y-axis sliders 33, the lower four corners of the transmitter slide seat 36 can be supported, the amount of swaying when the transmitter slide seat 36 moves is small, further improving accuracy and further reducing vibration.

[0044] like Figures 2-6As shown, a first X-axis cable chain groove 222 is provided on the first X-axis support beam 22, and a first X-axis cable chain 221 for installing wires is movably installed within the first X-axis cable chain groove 222. One side of the first Y-axis support beam 31 is connected to one end of the first X-axis cable chain 221. A first Y-axis cable chain groove 224 is provided on one side of the first Y-axis support beam 31, and a first Y-axis cable chain 223 for installing wires is movably installed within the first Y-axis cable chain groove 224. One side of the transmitter sliding seat 36 is connected to one end of the first Y-axis cable chain 223. By setting the first X-axis cable chain 221 and the first Y-axis cable chain 223, the wires can be moved, avoiding tangling of the wires.

[0045] like Figures 2-6 As shown, the worktable 21 is a marble worktable, and the first X-axis support beam 22 is a marble support beam. The use of a marble worktable and marble support beam in this invention significantly improves stability and durability, preventing deformation problems.

[0046] like Figure 6 As shown, a first laser rangefinder 39 is mounted on one side of the X-ray emission source 37. The first laser rangefinder 39 is used to measure the distance between the X-ray emission source 37 and the PCB board. A source protection cover 371 is provided outside the X-ray emission source 37. By setting the first laser rangefinder 39, the present invention can prevent the X-ray emission source 37 from touching the PCB board moving system 7, and can also enable the X-ray emission source 37 to emit X-rays towards the PCB board at an optimal distance.

[0047] like Figure 2 , Figure 3 , Figures 7-10As shown, the detector X-axis moving device 40 includes two second X-axis support beams 42 and two second X-axis linear motors 43. Several columns 41 are respectively installed on both ends of the worktable 21. One second X-axis support beam 42 is installed along the X-axis direction on the upper end of the column 41 at one end of the worktable 21, and the other second X-axis support beam 42 is installed along the X-axis direction on the upper end of the column 41 at the other end of the worktable 21. Second X-axis slide rails 44 are respectively installed on the two second X-axis support beams 42 along the X-axis direction. Second X-axis sliders 45 are installed on the second X-axis slide rails 44, and the second X-axis sliders 45 can slide back and forth along the second X-axis slide rails 44. A second X-axis linear motor 43 is mounted on the side of one of the second X-axis support beams 42 along the X-axis direction, and another second X-axis linear motor 43 is mounted on the side of another second X-axis support beam 42 along the X-axis direction. The second X-axis linear motor 43 includes a second X-axis linear stator 431 and a second X-axis mover 432 that cooperate with each other. The length direction of the second X-axis linear stator 431 is parallel to the second X-axis slide rail 44. The detector Y-axis moving device 50 is mounted on the second X-axis slider 45 and the second X-axis mover 432. Under the driving action of the second X-axis linear motor 43, it can drive the detector Y-axis moving device 50 to move back and forth along the X-axis direction. This invention employs two second X-axis support beams 42 and two second X-axis linear motors 43. The two second X-axis linear motors 43 synchronously drive the detector Y-axis moving device 50 to move back and forth along the X-axis direction from both ends. Both ends of the detector Y-axis moving device 50 are supported, and the force is balanced, which makes the detector Y-axis moving device 50 move stably and not easy to shake. Furthermore, due to the high speed, high precision, and low vibration of the linear motors, the detector Y-axis moving device 50 moves quickly, with high precision and low vibration.

[0048] like Figure 2 , Figure 3 , Figures 7-10 As shown, each second X-axis support beam 42 is provided with two parallel second X-axis slide rails 44, and each second X-axis slide rail 44 is provided with two second X-axis sliders 45. This structure allows both ends of the detector Y-axis moving device 50 to be supported by two second X-axis slide rails 44 and four second X-axis sliders 45, resulting in less swaying of the detector Y-axis moving device 50 during movement, further improving movement accuracy and reducing vibration.

[0049] like Figure 2 , Figure 3 , Figures 7-10As shown, the detector Y-axis moving device 50 includes a second Y-axis support beam 51, a second Y-axis slide rail 52, a second Y-axis slider 53, and a second Y-axis linear motor 54. The second Y-axis support beam 51 is arranged along the Y-axis direction. One end of the second Y-axis support beam 51 is mounted on a second X-axis slider 45 and a second X-axis mover 432 on one of the second X-axis support beams 42, and the other end of the second Y-axis support beam 51 is mounted on a second X-axis slider 45 and a second X-axis mover 432 on another second X-axis support beam 42. The second Y-axis slide rail 52 is mounted along the Y-axis direction on the second Y-axis support beam 51. On the side, the second Y-axis slider 53 is slidably mounted on the second Y-axis slide rail 52; the second Y-axis linear motor 54 is mounted on the upper part of the second Y-axis support beam 51 along the Y-axis direction. The second Y-axis linear motor 54 includes a second Y-axis linear stator 541 and a second Y-axis mover 542 that cooperate with each other. The length direction of the second Y-axis linear stator 541 is parallel to the second Y-axis slide rail 52; the detector sliding seat 61 is mounted on the second Y-axis slider 53 and the second Y-axis mover 542. Under the driving action of the second Y-axis linear motor 54, it can drive the detector sliding seat 61 to move back and forth along the Y-axis direction. The detector Y-axis moving device 50 of the present invention uses the second Y-axis linear motor 54 to drive the detector sliding seat 61 to move back and forth. The linear motor has a fast driving speed, high precision, and low vibration.

[0050] like Figures 7-13 As shown, the detector sliding seat 61 includes a front sliding side plate 611, an upper sliding side plate 613, a rear sliding side plate 612, and a lower sliding side plate 614 connected in sequence. The second Y-axis slide rails 52 are respectively installed on the front and rear sides of the second Y-axis support beam 51. Two second Y-axis sliders 53 are respectively installed on each second Y-axis slide rail 52. The front sliding side plate 611 is connected to the second Y-axis mover 542 and the second Y-axis slider 53 on the front side of the second Y-axis support beam 51. The rear sliding side plate 612 is connected to the second Y-axis slider 53 on the rear side of the second Y-axis support beam 51. The detector angle adjuster 62 and the CCD camera 63 are respectively installed on the lower side of the lower sliding side plate 614. This structure of the detector slide seat 61 allows the detector slide seat 61 to be fitted outside the second Y-axis support beam 51, and both the front and rear ends of the detector slide seat 61 can be supported by the second Y-axis slide rail 52, while the upper end of the detector slide seat 61 can be supported and driven by the second Y-axis mover 542. The entire detector slide seat 61 has good stability, balanced force, and high movement accuracy.

[0051] like Figures 12-15As shown, the detector angle adjuster 62 includes an adjustment bracket 621, an angle adjustment motor 622, an angle adjustment transmission mechanism 623, and an angle adjustment shaft 624. The upper end of the adjustment bracket 621 is connected to the lower end of the detector sliding seat 61. The angle adjustment motor 622 is installed inside the adjustment bracket 621. The angle adjustment shaft 624 is rotatably installed at the lower end of the adjustment bracket 621. The upper end of the X-ray detector 60 is connected to the angle adjustment shaft 624. The angle adjustment transmission mechanism 623 is installed between the motor shaft of the angle adjustment motor 622 and the angle adjustment shaft 624. Under the driving action of the angle adjustment motor 622, the angle adjustment shaft 624 and the X-ray detector 60 can be rotated clockwise or counterclockwise through the angle adjustment transmission mechanism 623 to adjust the angle of the X-ray detector 60. The present invention uses an angle adjustment motor 622 to drive the angle adjustment shaft 624 to rotate in the direction of rotation to adjust the angle of the X-ray detector 60. It is easy to control, has good stability and accuracy. The detector angle adjuster 62 of the present invention can adjust the angle of the X-ray detector 60 in a timely manner according to the detection requirements of the PCB board, so that the X-ray detector 60 can detect the detailed structure of the PCB board from different angles.

[0052] like Figures 12-14 As shown, the adjustment bracket 621 includes several vertically connected bracket rods 6211 to the lower end of the detector sliding seat 61. The lower end of the bracket rods 6211 is horizontally connected to a bracket plate 6212. The angle adjustment motor 622 is mounted on the bracket plate 6212. The lower end of the bracket plate 6212 is connected to two bearing positioning plates 6213. Bearings 6214 are respectively installed inside the two bearing positioning plates 6213. The two ends of the angle adjustment shaft 624 are respectively installed inside two bearings 6214. The upper end of the X-ray detector 60 is connected to a detector head connecting plate 64. The upper side of the detector head connecting plate 64 is provided with several connecting ears 641. The connecting ears 641 are connected to the angle adjustment shaft 624. The adjustment bracket 621 of the present invention, by setting a bracket rod 6211 and laterally connecting a bracket plate 6212 at the lower end of the bracket rod 6211, can stably install the angle adjustment motor 622 inside the adjustment bracket 621. The present invention, by connecting two bearing positioning plates 6213 and installing bearings 6214 at the lower end of the bracket plate 6212, can position both ends of the angle adjustment shaft 624 and ensure smooth rotation. The present invention, by connecting a detector head connecting plate 64 at the upper end of the X-ray detector 60 and providing a connecting ear 641 on the upper side of the detector head connecting plate 64, can stably install the X-ray detector 60 on the angle adjustment shaft 624.

[0053] like Figures 12-14As shown, one side of the bearing positioning plate 6213 is provided with a scale 6215 for marking angles. One side of each bearing positioning plate 6213 is also provided with several angle sensors 65 for sensing the angle of the X-ray detector 60. One end of the detector head connecting plate 64 is equipped with an angle sensing plate 651 that cooperates with the angle sensors 65. During the clockwise or counterclockwise rotation of the X-ray detector 60, the angle sensing plate 651 can extend into the corresponding angle sensor 65. This invention, through the sensing cooperation between the angle sensors 65 and the angle sensing plates 651, enables the angle sensors 65 to provide feedback to the control system on whether the X-ray detector 60 has reached the set angle.

[0054] like Figures 12-14 As shown, there are three angle sensors 65, one angle sensor 65 is used to sense the reference position of the X-ray detector 60 when it is not rotated, one angle sensor 65 is used to sense the position of the X-ray detector 60 when it is rotated 30 degrees clockwise, and one angle sensor 65 is used to sense the position of the X-ray detector 60 when it is rotated 30 degrees counterclockwise.

[0055] like Figure 14 As shown, one end of the angle adjustment shaft 624 is connected to a pointer 66, which points to a scale 6215 on one side of another bearing positioning plate 6213. This invention, by setting the pointer 66, facilitates the operator's viewing of the angle of the X-ray detector 60.

[0056] like Figures 12-14 As shown, the angle adjustment transmission mechanism 623 includes an upper pulley 6231, a lower pulley 6232, and a transmission belt 6233. The upper pulley 6231 is connected to the motor shaft of the angle adjustment motor 622, the lower pulley 6232 is connected to the angle adjustment shaft 624, and the transmission belt 6233 is fitted over the upper pulley 6231 and the lower pulley 6232. The bracket plate 6212 of the adjustment bracket 621 is provided with a bracket plate through hole 6216 for the transmission belt 6233 to pass through.

[0057] like Figure 12 and Figure 15 As shown, the X-ray detector moving system 4 also includes a second laser rangefinder 67, which is mounted on the lower end of the detector sliding base 61. The second laser rangefinder 67 is used to measure the distance between the X-ray detector 60 and the PCB board. By setting the second laser rangefinder 67, this invention can prevent the X-ray detector 60 from touching the PCB board moving system 7, and also enables the X-ray detector 60 to receive X-rays passing through the detection position of the PCB board at the optimal distance.

[0058] like Figure 12 and Figure 15As shown, the lower end of the detector sliding base 61 is provided with an auxiliary bracket 68. The auxiliary bracket 68 is provided with a camera bracket 681, a fill light bracket 682, and a rangefinder bracket 683. The CCD camera 63 is mounted on the camera bracket 681. A ring fill light 684 is mounted on the fill light bracket 682, extending below the CCD camera 63. The second laser rangefinder 67 is mounted on the rangefinder bracket 683. The camera bracket 681, fill light bracket 682, and rangefinder bracket 683 of this invention can all be adjusted vertically on the side of the auxiliary bracket 68. The ring fill light 684 can improve the shooting alignment effect of the CCD camera 63.

[0059] like Figure 11 and Figure 12 As shown, a protective cover 69 is connected to the lower end of the detector sliding base 61. The lower end of the protective cover 69 is open, and the CCD camera 63, the ring light 684, the detector angle adjuster 62, and the X-ray detector 60 are respectively located inside the protective cover 69. The protective cover 69 can provide good protection for the CCD camera 63, the ring light 684, the detector angle adjuster 62, and the X-ray detector 60.

[0060] like Figure 2 , Figure 3 , Figures 16-19As shown, the PCB board moving system 7 includes two PCB board lifting devices 70. Several columns 41 are respectively installed on both ends of the worktable 21. One PCB board lifting device 70 is installed on the side of the columns 41 at one end of the worktable 21, and the other PCB board lifting device 70 is installed on the side of the columns 41 at the other end of the worktable 21. The two PCB board lifting devices 70 are positioned opposite each other. Each of the two PCB board lifting devices 70 includes a lifting slide rail 71, a lifting slider 72, a lifting seat 73, and a lifting cable. The invention employs a lever drive device 74, with each column 41 having a vertically mounted lifting slide rail 71 on its side. A lifting slider 72 is slidably mounted on the lifting slide rail 71, and a lifting seat 73 is mounted on the lifting slider 72. A lifting screw drive device 74 is mounted on the side of one of the columns 41, and its power output end is connected to the lifting seat 73 to drive the lifting seat 73 to rise or fall along the lifting slide rail 71. A PCB board X-axis moving device 80 is mounted on the lifting seat 73. This invention uses two PCB board lifting devices 70 to synchronously drive the PCB board X-axis moving device 80 to rise or fall. Furthermore, each PCB board lifting device 70 has several lifting seats 73, enabling the PCB board X-axis moving device 80 to rise or fall from multiple positions. This ensures that the PCB board X-axis moving device 80, as well as the PCB board Y-axis moving device 86 and PCB board positioning device 90 mounted on it, can all rise or fall stably.

[0061] like Figure 2 , Figure 3 , Figures 16-18 As shown, the lifting screw drive device 74 includes a first screw motor 741, a first screw 742, and a first screw nut 743. The first screw motor 741 and the first screw 742 are mounted on the side of the column 41. The power output end of the first screw motor 741 is connected to the first screw 742. The first screw 742 is parallel to the lifting slide rail 71. The first screw 742 moves through the first screw nut 743 and is threadedly engaged with the first screw nut 743. The first screw nut 743 is connected to the lifting seat 73. Three columns 41 are respectively mounted on both ends of the worktable 21. The lifting screw drive device 74 is mounted on the side of the middle column 41. The PCB board X-axis moving device 80 is also mounted on the lifting seat 73 on the side of the three columns 41.

[0062] like Figure 2 , Figure 3 , Figures 16-19As shown, the PCB board moving system 7 includes two PCB board X-axis moving devices 80 positioned opposite each other. Each of the two PCB board X-axis moving devices 80 includes a third X-axis support beam 81, a third X-axis slide rail 82, a third X-axis slider 83, an X-axis lead screw drive device 84, and a PCB board X-axis sliding plate 85. The third X-axis support beam 81 is mounted on the lifting seat 73 along the X-axis direction. The third X-axis slide rail 82 is mounted on the third X-axis support beam 81 along the X-axis direction. The third X-axis slider 83 is slidably mounted on the third X-axis slide rail 82. The PCB board X-axis sliding plate 85 is mounted on the third X-axis slider 83. The X-axis lead screw drive device 84 is mounted on the third X-axis support beam 81. The power output end of the X-axis lead screw drive device 84 is connected to the PCB board X-axis sliding plate 85 and is used to drive the PCB board X-axis sliding plate 85 to move back and forth along the third X-axis slide rail 82. Two X-axis lead screw drive devices 84 can synchronously drive the PCB board X-axis sliding plate 85 to move back and forth along the X-axis direction, thereby driving the PCB board Y-axis moving device 86 and the PCB board positioning device 90 to move back and forth along the X-axis direction.

[0063] Furthermore, the X-axis lead screw drive device 84 includes a second lead screw motor 841, a second lead screw 842, and a second lead screw nut 843. The second lead screw motor 841 and the second lead screw 842 are mounted on the third X-axis support beam 81. The power output end of the second lead screw motor 841 is connected to the second lead screw 842. The second lead screw 842 is parallel to the third X-axis slide rail 82. The second lead screw 842 moves through the second lead screw nut 843 and is threadedly engaged with the second lead screw nut 843. The second lead screw nut 843 is connected to the X-axis sliding plate 85 of the PCB board. An X-axis lead screw protective cover 844 is also provided outside the X-axis lead screw drive device 84.

[0064] like Figure 2 , Figure 3 , Figures 16-19As shown, the PCB board moving system 7 includes two PCB board Y-axis moving devices 86 positioned opposite each other. Each of the two PCB board Y-axis moving devices 86 includes a third Y-axis support beam 861, a third Y-axis slide rail 862, a third Y-axis slider 863, and a Y-axis lead screw drive device 864. The two ends of the third Y-axis support beam 861 of one PCB board Y-axis moving device 86 are mounted on one end of the two PCB board X-axis sliding plates 85, while the two ends of the third Y-axis support beam 861 of the other PCB board Y-axis moving device 86 are mounted on the other end of the two PCB board X-axis sliding plates 85. Above; the third Y-axis slide rail 862 is mounted on the third Y-axis support beam 861 along the Y-axis direction, and the third Y-axis slider 863 is slidably mounted on the third Y-axis slide rail 862; both ends of the PCB board positioning device 90 are mounted on the third Y-axis sliders 863 of the two third Y-axis slide rails 862; the Y-axis lead screw drive device 864 is mounted on the third Y-axis support beam 861, and the power output end of the Y-axis lead screw drive device 864 is connected to the PCB board positioning device 90 to drive the PCB board positioning device 90 to move back and forth along the third Y-axis slide rail 862. The two Y-axis lead screw drive devices 864 can synchronously drive the PCB board positioning device 90 to move back and forth along the X-axis direction.

[0065] Furthermore, the Y-axis lead screw drive device 864 includes a third lead screw motor 865, a third lead screw 866, and a third lead screw nut 867. The third lead screw motor 865 and the third lead screw 866 are mounted on the third Y-axis support beam 861. The power output end of the third lead screw motor 865 is connected to the third lead screw 866. The third lead screw 866 is parallel to the third Y-axis slide rail 862. The third lead screw 866 moves through the third lead screw nut 867 and is threadedly engaged with the third lead screw nut 867. The third lead screw nut 867 is connected to the PCB board positioning device 90. A Y-axis lead screw protective cover 868 is also provided outside the Y-axis lead screw drive device 864.

[0066] like Figure 2 , Figure 3 , Figure 16 , Figure 17 and Figure 19 As shown, the PCB board positioning device 90 also includes a positioning frame 92. Both ends of the positioning frame 92 are mounted on the third Y-axis sliders 863 of the two third Y-axis slide rails 862. The power output end of the Y-axis lead screw drive device 864 is connected to the positioning frame 92. A through cavity 93 is provided inside the positioning frame 92. The carbon fiber support plate 91 is installed on the lower side of the positioning frame 92 and closes the lower end of the cavity 93. When the PCB board is placed on the carbon fiber support plate 91, the PCB board is precisely located within the cavity 93.

[0067] like Figure 1 As shown, the housing 1 includes a metal frame (not shown), a metal outer shell 11, and a metal inner shell (not shown). The metal outer shell 11 is installed on the outside of the metal frame, and the metal inner shell is installed on the inside of the metal frame. The front end of the housing 1 is provided with a sliding door 12 and a sliding door drive device (not shown), which is used to drive the sliding door to open or close. The front end of the housing 1 is also provided with a computer control system 13. On one hand, when the PCB board is fed into or out of the housing, the sliding door 12 can be opened by the sliding door drive device; on the other hand, when the PCB board does not need to be fed into or out of the housing, the sliding door 12 can be closed by the sliding door drive device. Furthermore, the double-layer metal housing provides good shielding.

[0068] The above description is merely a preferred embodiment of the present invention. Any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical solution of the present invention shall fall within the scope of the technical solution of the present invention.

Claims

1. A mobile X-ray emission source PCB board X-ray inspection device, characterized in that: This includes the housing and the X-ray emission source movement system, X-ray detector movement system, and PCB board movement system installed inside the housing; The X-ray emission source moving system includes a worktable, an X-axis moving device for the emission source, a Y-axis moving device for the emission source, a sliding seat for the emission source, and an X-ray emission source. The X-axis moving device for the emission source is mounted on the worktable, the Y-axis moving device for the emission source is mounted on the X-axis moving device for the emission source, the sliding seat for the emission source is mounted on the Y-axis moving device for the emission source, and the X-ray emission source is mounted on the sliding seat for the emission source. The X-ray emission source can emit X-rays upwards. The X-ray detector moving system includes a column, a detector X-axis moving device, a detector Y-axis moving device, a detector sliding base, a detector angle adjuster, an X-ray detector, and a CCD camera. The column is erected on the worktable. The detector X-axis moving device is mounted on the upper end of the column. The detector Y-axis moving device is mounted on top of the detector X-axis moving device. The detector sliding base is mounted on top of the detector Y-axis moving device. The detector angle adjuster and the CCD camera are respectively mounted on the lower end of the detector sliding base. The X-ray detector is mounted on the lower end of the detector angle adjuster. The detector angle adjuster is used to adjust the angle of the X-ray detector. The X-ray detector is used to detect X-ray energy. The CCD camera is used for visual positioning of the PCB board. The PCB board moving system includes a PCB board lifting device, a PCB board X-axis moving device, a PCB board Y-axis moving device, and a PCB board positioning device. The PCB board lifting device is installed on the side of the column. The PCB board X-axis moving device is installed on top of the PCB board lifting device. The PCB board Y-axis moving device is installed on top of the PCB board X-axis moving device. The PCB board positioning device is equipped with a carbon fiber support plate, which is used to support the PCB board and position the PCB board between the X-ray emission source and the X-ray detector.

2. The mobile PCB board X-ray inspection device with X-ray emission source according to claim 1, characterized in that: The X-axis moving device of the transmitter includes a first X-axis support beam, a first X-axis slide rail, a first X-axis slider, and a first X-axis linear motor. The first X-axis support beam is mounted on the worktable along the X-axis direction, the first X-axis slide rail is mounted on the first X-axis support beam along the X-axis direction, and the first X-axis slider is slidably mounted on the first X-axis slide rail. The first X-axis linear motor is mounted on the side of the first X-axis support beam along the X-axis direction. The first X-axis linear motor includes a first X-axis linear stator and a first X-axis mover that cooperate with each other. The length direction of the first X-axis linear stator is parallel to the first X-axis slide rail. The Y-axis moving device of the transmitter is mounted on the first X-axis slider and the first X-axis mover. Under the driving action of the first X-axis linear motor, it can drive the Y-axis moving device of the transmitter to move back and forth along the X-axis direction.

3. The mobile PCB board X-ray inspection device with X-ray emission source according to claim 2, characterized in that: The transmitter Y-axis moving device includes a first Y-axis support beam, a first Y-axis slide rail, a first Y-axis slider, and a first Y-axis linear motor. The first Y-axis support beam is mounted along the Y-axis direction on the first X-axis slider and the first X-axis mover of the transmitter X-axis moving device. The first Y-axis slide rail is mounted along the Y-axis direction on the first Y-axis support beam, and the first Y-axis slider is slidably mounted on the first Y-axis slide rail. The first Y-axis linear motor is mounted along the Y-axis direction on the side of the first Y-axis support beam. The first Y-axis linear motor includes a first Y-axis linear stator and a first Y-axis mover that cooperate with each other. The length direction of the first Y-axis linear stator is parallel to the first Y-axis slide rail. The transmitter sliding seat is mounted on the first Y-axis slider and the first Y-axis mover. Under the driving action of the first Y-axis linear motor, it can drive the transmitter sliding seat to move back and forth along the Y-axis direction.

4. The mobile PCB board X-ray inspection device with X-ray emission source according to claim 1, characterized in that: The detector's X-axis moving device includes two second X-axis support beams and two second X-axis linear motors. Several columns are mounted on both ends of the worktable. One second X-axis support beam is mounted along the X-axis direction on the upper end of one column of the worktable, and the other second X-axis support beam is mounted along the X-axis direction on the upper end of the column of the worktable. Second X-axis slide rails are mounted on the two second X-axis support beams along the X-axis direction, and second X-axis sliders are mounted on the second X-axis slide rails. The second X-axis sliders can slide back and forth along the second X-axis slide rails. Two X-axis linear motors are mounted on the side of one of the second X-axis support beams along the X-axis direction, and another second X-axis linear motor is mounted on the side of the other second X-axis support beam along the X-axis direction. The second X-axis linear motor includes a second X-axis linear stator and a second X-axis mover that cooperate with each other. The length direction of the second X-axis linear stator is parallel to the second X-axis slide rail. The detector Y-axis moving device is mounted on the second X-axis slider and the second X-axis mover. Under the driving action of the second X-axis linear motor, it can drive the detector Y-axis moving device to move back and forth along the X-axis direction.

5. The mobile PCB board X-ray inspection device with X-ray emission source according to claim 4, characterized in that: The detector Y-axis moving device includes a second Y-axis support beam, a second Y-axis slide rail, a second Y-axis slider, and a second Y-axis linear motor. The second Y-axis support beam is arranged along the Y-axis direction. One end of the second Y-axis support beam is mounted on a second X-axis slider and a second X-axis mover on one of the second X-axis support beams, and the other end of the second Y-axis support beam is mounted on a second X-axis slider and a second X-axis mover on the other second X-axis support beam. The second Y-axis slide rail is mounted on the side of the second Y-axis support beam along the Y-axis direction, and the second Y-axis slider is slidably mounted on the second Y-axis slide rail. The second Y-axis linear motor is mounted on the upper part of the second Y-axis support beam along the Y-axis direction. The second Y-axis linear motor includes a second Y-axis linear stator and a second Y-axis mover that cooperate with each other. The length direction of the second Y-axis linear stator is parallel to the second Y-axis slide rail. The detector sliding seat is mounted on the second Y-axis slider and the second Y-axis mover. Under the driving action of the second Y-axis linear motor, it can drive the detector sliding seat to move back and forth along the Y-axis direction.

6. The mobile PCB board X-ray inspection device with X-ray emission source according to claim 1, characterized in that: The detector angle adjuster includes an adjustment bracket, an angle adjustment motor, an angle adjustment transmission mechanism, and an angle adjustment shaft. The upper end of the adjustment bracket is connected to the lower end of the detector sliding seat. The angle adjustment motor is installed inside the adjustment bracket. The angle adjustment shaft is rotatably installed at the lower end of the adjustment bracket. The upper end of the X-ray detector is connected to the angle adjustment shaft. The angle adjustment transmission mechanism is installed between the motor shaft of the angle adjustment motor and the angle adjustment shaft. Under the driving action of the angle adjustment motor, the angle adjustment shaft and the X-ray detector can be driven to rotate clockwise or counterclockwise through the angle adjustment transmission mechanism to adjust the angle of the X-ray detector.

7. The mobile PCB board X-ray inspection device with X-ray emission source according to claim 1, characterized in that: The PCB board moving system includes two PCB board lifting devices. Several columns are installed on both ends of the worktable. One PCB board lifting device is installed on the side of several columns at one end of the worktable, and the other PCB board lifting device is installed on the side of several columns at the other end of the worktable. The two PCB board lifting devices are positioned opposite each other. Each PCB board lifting device includes a lifting slide rail, a lifting slider, a lifting seat, and a lifting screw drive device. The lifting slide rail is vertically installed on the side of each column. The lifting slider is slidably installed on the lifting slide rail. The lifting seat is installed on the lifting slider. The lifting screw drive device is installed on the side of one of the columns. The power output end of the lifting screw drive device is connected to the lifting seat to drive the lifting seat to rise or fall along the lifting slide rail. The PCB board X-axis moving device is installed on the lifting seat.

8. The mobile PCB board X-ray inspection device with X-ray emission source according to claim 7, characterized in that: The PCB board moving system includes two PCB board X-axis moving devices positioned opposite each other. Each PCB board X-axis moving device includes a third X-axis support beam, a third X-axis slide rail, a third X-axis slider, an X-axis lead screw drive device, and a PCB board X-axis sliding plate. The third X-axis support beam is mounted on a lifting base along the X-axis direction. The third X-axis slide rail is mounted on the third X-axis support beam along the X-axis direction. The third X-axis slider is slidably mounted on the third X-axis slide rail. The PCB board X-axis sliding plate is mounted on the third X-axis slider. The X-axis lead screw drive device is mounted on the third X-axis support beam. The power output end of the X-axis lead screw drive device is connected to the PCB board X-axis sliding plate, used to drive the PCB board X-axis sliding plate to move back and forth along the third X-axis slide rail.

9. The mobile PCB board X-ray inspection device with X-ray emission source according to claim 8, characterized in that: The PCB board moving system includes two PCB board Y-axis moving devices positioned opposite each other. Each Y-axis moving device includes a third Y-axis support beam, a third Y-axis slide rail, a third Y-axis slider, and a Y-axis lead screw drive device. The two ends of the third Y-axis support beam of one PCB board Y-axis moving device are mounted on one end of the two PCB board X-axis sliding plates, and the two ends of the third Y-axis support beam of the other PCB board Y-axis moving device are mounted on the other end of the two PCB board X-axis sliding plates. The third Y-axis slide rail is mounted along the Y-axis direction on the third Y-axis support beam, and the third Y-axis slider is slidably mounted on the third Y-axis slide rail. The two ends of the PCB board positioning device are mounted on the third Y-axis sliders of the two third Y-axis slide rails. The Y-axis lead screw drive device is mounted on the third Y-axis support beam, and its power output end is connected to the PCB board positioning device, used to drive the PCB board positioning device to move back and forth along the third Y-axis slide rail.

10. The detection method of the X-ray emission source mobile PCB board X-ray inspection equipment according to any one of claims 1-9, characterized in that, The methods and steps include the following: Ⅰ. Place the PCB board to be tested on the carbon fiber support plate of the PCB board positioning device of the PCB board moving system. Adjust the height of the carbon fiber support plate and the PCB board by the PCB board lifting device, adjust the X-axis position of the carbon fiber support plate and the PCB board by the PCB board X-axis moving device, and adjust the Y-axis position of the carbon fiber support plate and the PCB board by the PCB board Y-axis moving device. II. The X-axis moving device of the X-ray emission source moving system drives the emission source slide and the X-ray emission source to move along the X-axis direction, and the Y-axis moving device drives the emission source slide and the X-ray emission source to move along the Y-axis direction, so that the X-ray emission source reaches directly below the set detection position on the PCB board; III. The X-axis moving device of the X-ray detector moving system drives the detector slider, detector angle adjuster, X-ray detector and CCD camera to move along the X-axis direction, and the Y-axis moving device drives the detector slider, detector angle adjuster, X-ray detector and CCD camera to move along the Y-axis direction, so that the X-ray detector reaches directly above the set detection position on the PCB board, and the CCD camera performs visual positioning of the set detection position on the PCB board. IV. An X-ray emission source emits X-rays towards the designated detection position on the PCB board. The X-rays penetrate the carbon fiber support plate and the designated detection position on the PCB board in sequence before reaching the X-ray detector. The X-ray detector transmits the energy distribution data of the detected X-rays to the control system. The control system determines whether the designated detection position on the PCB board is qualified based on the energy distribution data. During the process of the X-ray detector detecting X-rays that have penetrated the designated detection position on the PCB board, for the detailed structure of the PCB board that the X-ray detector cannot detect at a fixed vertical angle, the detector angle adjuster adjusts the angle of the X-ray detector so that the X-ray detector can detect the detailed structure of the PCB board at a set tilt angle. V. When the PCB board has multiple set detection positions, perform detection on each set detection position according to steps II, III, and IV above; after the PCB board detection is completed, open the machine casing and remove the PCB board by a robotic arm or by hand.

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