X-ray emission source fixed type PCB X-ray detection equipment and detection method
By using a fixed X-ray emission source and a PCB board moving system with a detector angle adjuster and a carbon fiber support plate, the problems of low detection accuracy and limited angle in the prior art are solved, and high-precision, multi-angle PCB board detection is achieved.
Patent Information
- Application Number
- CN202610189970.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-10
- Publication Date
- 2026-03-27
AI Technical Summary
In existing PCB board X-ray inspection equipment, the X-ray emission source and detector moving device are prone to shaking and vibration, resulting in low inspection accuracy. It is also impossible to detect the detailed structure of the PCB board at an inclined angle, and the PCB board support system cannot be adjusted in position, affecting the inspection accuracy.
An X-ray emission source is fixed on the worktable. Combined with a PCB board moving system and a detector angle adjuster, the PCB board is moved to the optimal detection position by the PCB board moving system, and a carbon fiber support plate is used to support the PCB board. The detector angle adjuster adjusts the angle of the X-ray detector.
It avoids the shaking and vibration of the X-ray emission source, improves the detection accuracy, and can detect the detailed structure of the PCB board from different angles, ensuring the accuracy of the detection.
Smart Images
Figure CN121740911A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of PCB board inspection equipment technology, and in particular to a fixed X-ray emission source PCB board X-ray inspection equipment and inspection method. 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) During the detection process, the X-ray emission source moving device needs to move along the X-axis and Y-axis. During the movement, the X-ray emission source moving device is prone to shaking and vibration, which leads to a decrease in detection 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's X-ray The detector can only detect the detailed structure of the PCB board at a fixed vertical angle, but 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, but cannot lift the PCB board or move the PCB board forward, backward, left, or right. The PCB board support system cannot move the PCB board to the most suitable detection position. (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 fixed X-ray source PCB board X-ray inspection device. In this device, the X-ray source is fixed to the worktable, and the PCB board to be inspected is moved to a position directly above the X-ray source via a PCB board moving system. This avoids shaking and vibration of the X-ray source, improving inspection accuracy. The X-ray detector moving system allows adjustment of the X-ray detector angle via an angle adjuster, enabling the detector to inspect the detailed structure of the PCB board from different angles. The system automatically adjusts 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 uses a carbon fiber support plate to support the PCB board. This carbon fiber support plate has high strength, providing stable support for the PCB board, and exhibits extremely low X-ray absorption, resulting in minimal X-ray blocking and avoiding any impact on the accuracy of PCB board inspection. Meanwhile, the present invention also provides a detection method for a fixed X-ray emission 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 fixed PCB board X-ray inspection device, including a housing and an X-ray emission source fixing device, an X-ray detector moving system and a PCB board moving system installed inside the housing; The X-ray emission source fixing device includes a worktable and an emission source fixing bracket fixedly installed on the middle of the worktable. An X-ray emission source is installed on the emission source fixing bracket, and the X-ray emission source can emit X-rays upward. 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, a first laser rangefinder is also installed on the emission source fixing bracket. The first laser rangefinder is arranged in parallel with the X-ray emission source and is used to measure the distance between the X-ray emission source and the PCB board.
[0008] Preferably, the detector X-axis moving device includes two first X-axis support beams and two first X-axis linear motors. Several columns are mounted on both ends of the worktable. One first X-axis support beam is mounted along the X-axis direction on the upper end of one column of the worktable, and the other first 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. First X-axis slide rails are mounted on the two first X-axis support beams along the X-axis direction, and first X-axis sliders are mounted on the first X-axis slide rails. The first X-axis sliders can slide back and forth along the first X-axis slide rails. A first X-axis linear motor is mounted on the side of one of the first X-axis support beams along the X-axis direction, and another first X-axis linear motor is mounted on the side of the other 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 moving part 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 detector Y-axis moving device is mounted on the first X-axis slider and the first X-axis moving part. Under the driving action of the first X-axis linear motor, it can drive the detector Y-axis moving device to move back and forth along the X-axis direction.
[0009] Preferably, the detector 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 arranged along the Y-axis direction. One end of the first Y-axis support beam is mounted on a first X-axis slider and a first X-axis mover on one of the first X-axis support beams, and the other end of the first Y-axis support beam is mounted on a first X-axis slider and a first X-axis mover on another first X-axis support beam. The first Y-axis slide rail is mounted on the side of the first Y-axis support beam along the Y-axis direction, and the first Y-axis slider is slidably mounted on the first Y-axis slide rail. The first Y-axis linear motor is mounted on the upper part of the first Y-axis support beam along the Y-axis direction. 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 detector sliding seat is mounted on the first Y-axis slider and the first Y-axis mover, and under the driving action of the first Y-axis linear motor, it can drive the detector sliding seat to move back and forth along the Y-axis direction.
[0010] 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.
[0011] Preferably, the adjustment bracket includes several vertical support rods connected to the lower end of the detector sliding seat, with a support plate horizontally connected to the lower end of the support rods, and the angle adjustment motor mounted on the support plate; two bearing positioning plates are connected to the lower end of the support plate, and bearings are respectively installed inside the two bearing positioning plates, with two bearings installed at each end of the angle adjustment shaft; a detector head connecting plate is connected to the upper end of the X-ray detector, and several connecting ears are provided on the upper side of the detector head connecting plate, the connecting ears being connected to the angle adjustment shaft; one side of the bearing positioning plate is provided with a scale for marking the angle, and one side of one of the bearing positioning plates is also provided with several angle sensors for sensing the angle of the X-ray detector, and an angle sensing plate that cooperates with the angle sensor is installed at one end of the detector head connecting plate, so that the angle sensing plate can extend into the corresponding angle sensor during the clockwise or counterclockwise rotation 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 second X-axis support beam, a second X-axis slide rail, a second X-axis slider, an X-axis lead screw drive device, and a PCB board X-axis sliding plate. The second X-axis support beam is mounted on a lifting seat along the X-axis direction. The second X-axis slide rail is mounted on the second X-axis support beam along the X-axis direction. The second X-axis slider is slidably mounted on the second X-axis slide rail. The PCB board X-axis sliding plate is mounted on the second X-axis slider. The X-axis lead screw drive device is mounted on the second 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 second X-axis slide rail.
[0014] Preferably, the PCB board moving system includes two PCB board Y-axis moving devices positioned opposite each other. Each PCB board Y-axis moving device includes a second Y-axis support beam, a second Y-axis slide rail, a second Y-axis slider, and a Y-axis lead screw drive device. The two ends of the second 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 second 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 second Y-axis slide rail is mounted on 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 two ends of the PCB board positioning device are mounted on the second Y-axis sliders of the two second Y-axis slide rails. The Y-axis lead screw drive device is mounted on the second 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 second 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 fixed PCB board X-ray inspection equipment includes the following 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, and adjust the height of the carbon fiber support plate and the PCB board by means of the PCB board lifting device; II. The PCB board X-axis moving device of the PCB board moving system drives the PCB board Y-axis moving device and the PCB board positioning device to move along the X-axis direction. The PCB board Y-axis moving device of the PCB board moving system drives the PCB board positioning device to move along the Y-axis direction, so that the set detection position of the PCB board reaches directly above the X-ray emission source. 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. 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 emission source of the PCB board X-ray inspection equipment of the present invention is fixed on the worktable and does not move, the PCB board to be inspected position is moved to the top of the X-ray emission source through the PCB board moving system, thus avoiding the problem of shaking and vibration of the X-ray emission source and improving the detection accuracy; (2) Since the X-ray detector moving system of the present invention includes a detector angle adjuster, the detector angle adjuster 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. The detector angle adjuster is used to adjust the angle of the X-ray detector. Therefore, 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; (3) 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; (4) 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 an overall structural diagram of the X-ray emission source fixing device.
[0021] Figure 5 This is a first-view overall structural diagram of the X-ray detector moving system.
[0022] Figure 6 This is a second-view overall structural diagram of the X-ray detector moving system.
[0023] Figure 7 This is a first-view dispersion diagram of the X-ray detector moving system.
[0024] Figure 8 This is a second-view dispersion structure diagram of the X-ray detector moving system.
[0025] Figure 9 This is an overall structural diagram of the detector slider, detector angle adjuster, X-ray detector, CCD camera, second laser rangefinder, and protective housing.
[0026] Figure 10 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.
[0027] Figure 11 This is a first-view diagram of the combined structure of the detector angle adjuster and the X-ray detector.
[0028] Figure 12 This is a structural diagram of the second-view combination of the detector angle adjuster and the X-ray detector.
[0029] Figure 13 This is a structural diagram of the combination of a CCD camera and a second laser rangefinder.
[0030] Figure 14 This is a first-person view of the overall structure of the PCB board moving system.
[0031] Figure 15 This is a second-view overall structural diagram of the PCB board moving system.
[0032] Figure 16 This is a structural diagram of the PCB board lifting device, the second X-axis support beam, the second X-axis slide rail, and the second X-axis slider.
[0033] Figure 17 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
[0034] The structural and working principles of the present invention will be further described in detail below with reference to the accompanying drawings.
[0035] like Figures 1 to 17As shown, this invention is an X-ray inspection device for a PCB board with a fixed X-ray emission source, including a housing 1 and an X-ray emission source fixing device 2, an X-ray detector moving system 4, and a PCB board moving system 7 installed inside the housing 1; the X-ray emission source fixing device 2 includes a worktable 21 and an emission source fixing bracket 22 fixedly installed on the middle of the worktable 21, and an X-ray emission source 23 is installed on the emission source fixing bracket 22, which can emit X-rays upward; the X-ray detector moving system 4 includes a column 41. Detector X-axis moving device 40, detector Y-axis moving device 50, detector sliding seat 61, detector angle adjuster 62, X-ray detector 60, and CCD camera 63. The column 41 is erected on the worktable 21. The detector X-axis moving device 40 is mounted on the upper end of the column 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 CCD camera 63 are also present. 3 are respectively installed at the lower end of the detector sliding seat 61. The X-ray detector 60 is installed 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. The CCD camera 63 is used to visually locate the PCB board (not shown). 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 23 and the X-ray detector 60.
[0036] In this invention, the X-ray inspection equipment for PCB boards has an X-ray emission source 23 fixed on the worktable 21. The PCB board moving system 7 moves the position to be inspected on the PCB board directly above the X-ray emission source 23, thus avoiding shaking and vibration of the X-ray emission source 23 and improving inspection accuracy. Furthermore, the X-ray detector moving system 4 includes a detector angle adjuster 62, which is installed at the lower end of the detector sliding base 61. The X-ray detector 60 is mounted at the lower end of the detector angle adjuster 62, which 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 PCB board moving system 7 of the present invention 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 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 23 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.
[0037] The detection method of the X-ray inspection equipment for fixed X-ray emission sources of PCB boards 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, and adjust the height of the carbon fiber support plate 91 and the PCB board by the PCB board lifting device 70. II. The X-axis moving device of the X-ray source 23 moving system 2 drives the X-ray source sliding seat 36 and the X-ray source 23 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 23 to move along the Y-axis direction, so that the X-ray source 23 reaches directly below the set detection position of the PCB board; II. The PCB board X-axis moving device 80 of the PCB board moving system 7 drives the PCB board Y-axis moving device 86 and the PCB board positioning device 90 to move along the X-axis direction. The PCB board Y-axis moving device 86 of the PCB board moving system 7 drives the PCB board positioning device 90 to move along the Y-axis direction, so that the set detection position of the PCB board reaches directly above the X-ray emission source 23. IV. X-ray emission source 23 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 the X-rays that have passed through 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.
[0038] like Figure 2 and Figure 3 As shown, the workbench 21 is a marble workbench. The use of a marble workbench in this invention significantly improves stability and durability, preventing deformation problems.
[0039] like Figure 4 As shown, a first laser rangefinder 24 is also mounted on the X-ray source mounting bracket 23. The first laser rangefinder 24 is arranged side by side with the X-ray source 23 and is used to measure the distance between the X-ray source 23 and the PCB board. By setting the first laser rangefinder 24, this invention can prevent the X-ray source 23 from touching the PCB board moving system 7 and can also enable the X-ray source 23 to emit X-rays towards the PCB board at an optimal distance.
[0040] like Figure 2 , Figure 3 , Figures 5-8As shown, the detector X-axis moving device 40 includes two first X-axis support beams 42 and two first X-axis linear motors 43. Several columns 41 are respectively installed on both ends of the worktable 21. One first 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 first 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. First X-axis slide rails 44 are respectively installed on the two first X-axis support beams 42 along the X-axis direction. First X-axis sliders 45 are installed on the first X-axis slide rails 44, and the first X-axis sliders 45 can slide back and forth along the first X-axis slide rails 44. A first X-axis linear motor 43 is mounted on the side of one of the first X-axis support beams 42 along the X-axis direction, and another first X-axis linear motor 43 is mounted on the side of the other first X-axis support beam 42 along the X-axis direction. The first X-axis linear motor 43 includes a first X-axis linear stator 431 and a first X-axis mover 432 that cooperate with each other. The length direction of the first X-axis linear stator 431 is parallel to the first X-axis slide rail 44. The detector Y-axis moving device 50 is mounted on the first X-axis slider 45 and the first X-axis mover 432. Under the driving action of the first 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 first X-axis support beams 42 and two first X-axis linear motors 43. The two first 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.
[0041] like Figure 2 , Figure 3 , Figures 5-8 As shown, each first X-axis support beam 42 is provided with two parallel first X-axis slide rails 44, and each first X-axis slide rail 44 is provided with two first X-axis sliders 45. This structure allows both ends of the detector Y-axis moving device 50 to be supported by two first X-axis slide rails 44 and four first 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.
[0042] like Figure 2 , Figure 3 , Figures 5-8As shown, the detector Y-axis moving device 50 includes a first Y-axis support beam 51, a first Y-axis slide rail 52, a first Y-axis slider 53, and a first Y-axis linear motor 54. The first Y-axis support beam 51 is arranged along the Y-axis direction. One end of the first Y-axis support beam 51 is mounted on a first X-axis slider 45 and a first X-axis mover 432 on one of the first X-axis support beams 42, and the other end of the first Y-axis support beam 51 is mounted on a first X-axis slider 45 and a first X-axis mover 432 on another first X-axis support beam 42. The first Y-axis slide rail 52 is mounted along the Y-axis direction on the first Y-axis support beam 51. On the side, the first Y-axis slider 53 is slidably mounted on the first Y-axis slide rail 52; the first Y-axis linear motor 54 is mounted on the upper part of the first Y-axis support beam 51 along the Y-axis direction. The first Y-axis linear motor 54 includes a first Y-axis linear stator 541 and a first Y-axis mover 542 that cooperate with each other. The length direction of the first Y-axis linear stator 541 is parallel to the first Y-axis slide rail 52; the detector sliding seat 61 is mounted on the first Y-axis slider 53 and the first Y-axis mover 542. Under the driving action of the first 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 first 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.
[0043] like Figures 5-11 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 first Y-axis slide rails 52 are respectively installed on the front and rear sides of the first Y-axis support beam 51. Two first Y-axis sliders 53 are respectively installed on each first Y-axis slide rail 52. The front sliding side plate 611 is connected to the first Y-axis mover 542 and the first Y-axis slider 53 on the front side of the first Y-axis support beam 51. The rear sliding side plate 612 is connected to the first Y-axis slider 53 on the rear side of the first 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 first Y-axis support beam 51, and both the front and rear ends of the detector slide seat 61 can be supported by the first Y-axis slide rail 52, while the upper end of the detector slide seat 61 can be supported and driven by the first Y-axis mover 542. The entire detector slide seat 61 has good stability, balanced force, and high movement accuracy.
[0044] like Figures 10-13As 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.
[0045] like Figures 10-12 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.
[0046] like Figures 10-12As 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.
[0047] like Figures 10-12 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.
[0048] like Figure 12 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.
[0049] like Figures 10-12 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.
[0050] like Figure 10 and Figure 13 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.
[0051] like Figure 10 and Figure 13As 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.
[0052] like Figure 9 and Figure 10 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.
[0053] like Figure 2 , Figure 3 , Figures 14-17As 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.
[0054] like Figure 2 , Figure 3 , Figures 14-16 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.
[0055] like Figure 2 , Figure 3 , Figures 14-17As 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 second X-axis support beam 81, a second X-axis slide rail 82, a second X-axis slider 83, an X-axis lead screw drive device 84, and a PCB board X-axis sliding plate 85. The second X-axis support beam 81 is mounted on the lifting seat 73 along the X-axis direction. The second X-axis slide rail 82 is mounted on the second X-axis support beam 81 along the X-axis direction. The second X-axis slider 83 is slidably mounted on the second X-axis slide rail 82. The PCB board X-axis sliding plate 85 is mounted on the second X-axis slider 83. The X-axis lead screw drive device 84 is mounted on the second 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 second 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.
[0056] 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 second 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 second 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.
[0057] like Figure 2 , Figure 3 , Figures 14-17As 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 second Y-axis support beam 861, a second Y-axis slide rail 862, a second Y-axis slider 863, and a Y-axis lead screw drive device 864. The two ends of the second 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 second 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 second Y-axis slide rail 862 is mounted on the second Y-axis support beam 861 along the Y-axis direction, and the second Y-axis slider 863 is slidably mounted on the second Y-axis slide rail 862; both ends of the PCB board positioning device 90 are mounted on the second Y-axis sliders 863 of the two second Y-axis slide rails 862; the Y-axis lead screw drive device 864 is mounted on the second 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 second 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.
[0058] 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 second 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 second 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.
[0059] like Figure 2 , Figure 3 , Figure 14 , Figure 15 and Figure 17 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 second Y-axis sliders 863 of the two second 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.
[0060] 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.
[0061] 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 PCB board X-ray inspection device with a fixed X-ray emission source, characterized in that: Includes the housing and the X-ray emission source fixing device, X-ray detector moving system and PCB board moving system installed inside the housing; The X-ray emission source fixing device includes a worktable and an emission source fixing bracket fixedly installed on the middle of the worktable. An X-ray emission source is installed on the emission source fixing bracket, and the X-ray emission source can emit X-rays upward. 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 X-ray emission source fixed PCB board X-ray inspection equipment according to claim 1, characterized in that: A first laser rangefinder is also installed on the mounting bracket of the emission source. The first laser rangefinder is arranged in parallel with the X-ray emission source and is used to measure the distance between the X-ray emission source and the PCB board.
3. The X-ray emission source fixed PCB board X-ray inspection equipment according to claim 1, characterized in that: The detector's X-axis moving device includes two first X-axis support beams and two first X-axis linear motors. Several columns are mounted on both ends of the worktable. One first X-axis support beam is mounted along the X-axis direction on the upper end of one column of the worktable, and the other first X-axis support beam is mounted along the X-axis direction on the upper end of the column of the worktable. First X-axis slide rails are mounted on the two first X-axis support beams along the X-axis direction, and first X-axis sliders are mounted on the first X-axis slide rails. The first X-axis sliders can slide back and forth along the first X-axis slide rails. One X-axis linear motor is mounted on the side of one of the first X-axis support beams along the X-axis direction, and another first X-axis linear motor is mounted on the side of the other 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 moving part 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 detector Y-axis moving device is mounted on the first X-axis slider and the first X-axis moving part. Under the driving action of the first X-axis linear motor, it can drive the detector Y-axis moving device to move back and forth along the X-axis direction.
4. The X-ray emission source fixed PCB board X-ray inspection equipment according to claim 3, characterized in that: The detector 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 arranged along the Y-axis direction. One end of the first Y-axis support beam is mounted on a first X-axis slider and a first X-axis mover on one of the first X-axis support beams, and the other end of the first Y-axis support beam is mounted on a first X-axis slider and a first X-axis mover on another first X-axis support beam. The first Y-axis slide rail is mounted on the side of the first Y-axis support beam along the Y-axis direction, and the first Y-axis slider is slidably mounted on the first Y-axis slide rail. The first Y-axis linear motor is mounted on the upper part of the first Y-axis support beam along the Y-axis direction. 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 detector 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 detector sliding seat to move back and forth along the Y-axis direction.
5. The X-ray emission source fixed PCB board X-ray inspection equipment 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.
6. The X-ray emission source fixed PCB board X-ray inspection equipment according to claim 5, characterized in that: The adjustment bracket includes several vertical support rods connected to the lower end of the detector sliding seat. A support plate is horizontally connected to the lower end of each support rod, and the angle adjustment motor is mounted on the support plate. Two bearing positioning plates are connected to the lower end of the support plate, and bearings are installed within each of the two bearing positioning plates. Two bearings are installed at each end of the angle adjustment shaft. A detector head connecting plate is connected to the upper end of the X-ray detector. Several connecting ears are provided on the upper side of the detector head connecting plate, and these connecting ears are connected to the angle adjustment shaft. One side of each bearing positioning plate has a scale for marking angles, and one side of each bearing positioning plate also has several angle sensors for sensing the angle of the X-ray detector. An angle sensing plate that cooperates with the angle sensors is installed at one end of the detector head connecting plate. During clockwise or counterclockwise rotation of the X-ray detector, the angle sensing plate can extend into the corresponding angle sensor.
7. The X-ray emission source fixed PCB board X-ray inspection equipment 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 X-ray emission source fixed PCB board X-ray inspection equipment 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 second X-axis support beam, a second X-axis slide rail, a second X-axis slider, an X-axis lead screw drive device, and a PCB board X-axis sliding plate. The second X-axis support beam is mounted on a lifting base along the X-axis direction. The second X-axis slide rail is mounted on the second X-axis support beam along the X-axis direction. The second X-axis slider is slidably mounted on the second X-axis slide rail. The PCB board X-axis sliding plate is mounted on the second X-axis slider. The X-axis lead screw drive device is mounted on the second 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 second X-axis slide rail.
9. The X-ray emission source fixed PCB board X-ray inspection equipment 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 second Y-axis support beam, a second Y-axis slide rail, a second Y-axis slider, and a Y-axis lead screw drive device. The two ends of the second 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 second 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 second Y-axis slide rail is mounted along the Y-axis direction on the second Y-axis support beam, and the second Y-axis slider is slidably mounted on the second Y-axis slide rail. The two ends of the PCB board positioning device are mounted on the second Y-axis sliders of the two second Y-axis slide rails. The Y-axis lead screw drive device is mounted on the second 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 second Y-axis slide rail.
10. The detection method of the X-ray emission source fixed 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, and adjust the height of the carbon fiber support plate and the PCB board by means of the PCB board lifting device; II. The PCB board X-axis moving device of the PCB board moving system drives the PCB board Y-axis moving device and the PCB board positioning device to move along the X-axis direction. The PCB board Y-axis moving device of the PCB board moving system drives the PCB board positioning device to move along the Y-axis direction, so that the set detection position of the PCB board reaches directly above the X-ray emission source. 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. 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.