An AOI detection device

Abstract

The present invention belongs to the technical field of semiconductor production equipment, and specifically relates to an AOI detection device, including a machine base, and also including: a camera detection module, which is arranged on the machine base, including a positioning camera component and a detection camera component, and is used to position the printed circuit board and collect image information of the workpiece; a printed circuit board test module, which is arranged on the machine base and located below the camera detection module, and is used to move the printed circuit board to the position of the camera detection module. With the above structure, the detection device uses dual-camera recognition, and is separately provided with a positioning camera and a picture acquisition camera, with high alignment accuracy, and can be applied to smaller gap picture recognition and respectively complete the functions of alignment and detection; compared with the mode of using a single lens to realize multiple tasks such as positioning and sampling, the detection device of the present invention greatly improves the work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of semiconductor production equipment, and in particular to a device capable of simultaneously positioning and detecting a printed circuit board workpiece. Background Art

[0002] AOI (Automated Optical Inspection) is the Chinese full name of automatic optical inspection, which is a device based on optical principles to detect common defects encountered in welding production. During automatic inspection, the machine automatically scans the printed circuit board through a camera, collects images, compares the tested solder joints with qualified parameters in the database, and detects defects on the printed circuit board through image processing, and displays / marks the defects through a display or automatic marking for subsequent process repair. Summary of the invention

[0003] In order to complete AOI detection, the present invention aims to provide an AOI detection device, which adopts dual-camera recognition to improve detection accuracy and efficiency.

[0004] To achieve the above object, the technical solution adopted by the present invention is: an AOI detection device, including a machine base, and also including:

[0005] A camera detection module is arranged on the machine base, and includes a positioning camera component and a detection camera component, and is used to locate the printed circuit board and collect image information of the workpiece;

[0006] The printed circuit board test module is arranged on the machine base and located below the camera detection module, and is used to move the printed circuit board to the position of the camera detection module.

[0007] Preferably, the machine base includes a mounting base plate and a gantry bracket arranged on the mounting base plate; the camera detection module is arranged on the gantry bracket, and the printed circuit board test module is arranged on the upper surface of the mounting base plate.

[0008] Preferably, the camera detection module includes an X-axis moving component arranged on the front surface of the gantry bracket, a Z-axis moving component arranged thereon, and a detection camera component and a positioning camera component connected to the Z-axis moving component.

[0009] Preferably, the X-axis moving component includes an X-axis base fixedly arranged on the front surface of the gantry bracket, a linear motor stator and two mutually parallel X-axis guide rails arranged on the X-axis base, an X-axis slider movably arranged on the two X-axis guide rails, a linear motor mover movably connected to the linear motor stator, and a Z-axis mounting base plate whose back side is fixedly connected to the linear motor mover and the X-axis sliders on the two X-axis guide rails; the Z-axis moving component includes a Z-axis slide mainboard fixedly connected to the front surface of the Z-axis mounting base plate, a Z-axis slide sub-plate movably arranged on the front surface of the Z-axis slide mainboard, a Z-axis lead screw whose lower end is inserted into the Z-axis slide sub-plate and movably connected to the Z-axis lead screw, a motor mounting seat arranged on the upper surface of the Z-axis slide mainboard, and a Z-axis motor arranged on the motor mounting seat and whose output shaft is connected to the upper end of the Z-axis lead screw; the Z-axis slide mainboard and the Z-axis slide sub-plate are movably connected via two sets of Z-axis cross roller slides.

[0010] Preferably, the detection camera assembly includes a detection camera seat arranged on the front surface of the Z slide sub-plate, a detection camera clamp connected to the detection camera seat for fixing the detection lens, a detection camera arranged on the detection camera seat, and a detection lens arranged on the detection camera and located below it; the positioning camera assembly includes a positioning camera seat arranged on the front surface of the Z slide sub-plate, a positioning camera clamp connected to the positioning camera seat for fixing the positioning lens, a positioning camera arranged on the positioning camera seat, a positioning lens arranged on the positioning camera and located below it, a light source bracket arranged on one side surface of the positioning camera seat, a first light source and a second light source arranged on the light source bracket and placed up and down, both of which are located below the positioning lens.

[0011] Preferably, the printed circuit board test module includes an X-axis transfer component, a Z-axis lifting component arranged thereon, and a pressure component arranged above the Z-axis lifting component.

[0012] Preferably, the X-axis transfer assembly includes an X-axis main slide, two mutually parallel X-axis transfer guide rails and a linear motor stator arranged on the upper surface of the X-axis main slide, an X-axis transfer slider arranged on the two X-axis transfer guide rails, a linear motor mover movably connected to the linear motor stator, a mover fixing block fixedly connected to the linear motor mover, and a Z-axis bottom plate whose back is fixedly connected to the mover fixing block and the X-axis transfer sliders on the two X-axis transfer guide rails; the Z-axis lifting assembly includes a lower platform plate arranged on the Z-axis bottom plate, a Z-axis base arranged on the upper surface of the lower platform plate, two groups of horizontal cross roller slides in the horizontal direction arranged on the upper surface of the Z-axis base, a horizontal slide with a supporting inclined surface arranged on the two groups of horizontal cross roller slides, and a horizontal slide movably arranged on the horizontal slide A Z-direction slide is provided with a Z-direction inclined surface that fits the supporting inclined surface; a horizontal power component is provided on the Z-direction base and connected to the horizontal slide for driving the horizontal slide to reciprocate linearly on the Z-direction base; a Z-direction auxiliary slide is provided on the upper surface of one end of the Z-direction base; a fixture base plate is provided on the upper surface of the Z-direction slide, and a thread needle fixture for placing printed circuit board workpieces is provided on the upper surface of the fixture base plate; one end of the Z-direction slide is movably connected to the Z-direction guide rail in one side surface of the Z-direction auxiliary slide through two groups of Z-direction cross roller slides; when the horizontal slide reciprocates linearly on the Z-direction base, the Z-direction slide rises and falls relative to the Z-direction auxiliary slide; a group of oblique cross roller slides are provided on both sides of the supporting inclined surface, and the Z-direction inclined surface is connected to the oblique cross roller slides.

[0013] Preferably, the horizontal power assembly includes a horizontal motor installed on the outer surface of the Z-axis auxiliary slide, a horizontal coupling arranged in the Z-axis auxiliary slide and connected to the output shaft of the horizontal motor, a horizontal bearing seat installed on the Z-axis auxiliary slide, and a horizontal lead screw at one end of which passes through the horizontal bearing seat and is connected to the horizontal coupling; the other end of the horizontal lead screw is movably connected to the horizontal slide.

[0014] Preferably, the pressure assembly includes two support plates that are parallel to each other and stand on the upper surface of the lower platform plate, an upper platform plate connected to the upper surfaces of the two support plates, through holes provided in the upper platform plate for exposing the thread needle jig and the printed circuit board workpiece, a pressing frame slide movably provided on the upper surface of the upper platform plate, and a pressing frame plate provided in the pressing frame slide; square through holes are provided in the pressing frame slide and the pressing frame plate.

[0015] Preferably, the upper surface of the upper platform plate is also provided with two mutually parallel Y-direction sliding guide rails and a cylinder, each Y-direction sliding guide rail is provided with two Y-direction sliding sliders connected to the bottom surface of the pressing frame slide, and a slider fixing plate connected to the cylinder output shaft is provided on the lower surface of one end of the pressing frame slide; when the cylinder output shaft is extended or retracted, it drives the pressing frame slide to reciprocate in the Y direction along the Y-direction sliding guide rail.

[0016] Beneficial technical effects: With the detection device of the present invention, when the printed board to be inspected is loaded, the frame pressing slide and the frame pressing plate inside it are moved away. After loading onto the thread needle fixture, the frame pressing plate is moved back and pressed onto the printed board workpiece and the thread needle fixture. The X-axis transfer component moves the printed board to the bottom of the positioning camera component. The positioning camera is driven by the Z-axis motor and moves in the Z direction for focusing. After focusing, the alignment points on the printed board (the alignment points reserved by the printed board supplier when producing the printed board, generally the alignment points at the four corners are selected for positioning) are identified for alignment. The Z-axis lifting component pushes the thread needle fixture up and contacts the frame pressing plate. Because the thread needle fixture has a spring inside and can be compressed, the elastic force of the spring makes the thread needle of the thread needle fixture effectively contact the electrode of the printed board, ensuring smooth power supply and lighting up the LED chip on the printed board. The chip is tested and the detection camera collects images. The brightness of the tested chip is compared with the qualified parameters in the database. After image processing, defects on the printed circuit board are checked and automatically marked to display / mark the defects for subsequent process repair. The Z-axis lifting component lowers the needle fixture to a height separated from the frame pressing plate, and the X-axis transfer component moves the printed circuit board to the loading position. The frame pressing slide and the frame pressing plate inside it are removed, and the AOI inspection process is completed; therefore, the detection device uses dual cameras for recognition, and is separately provided with a positioning camera and a picture acquisition camera, with high alignment accuracy, and can be applied to smaller gap picture recognition and respectively complete the functions of alignment and detection; compared with the mode of using a single lens to realize multiple tasks such as positioning and sampling, the detection device of the present invention greatly improves the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram of an embodiment of the present invention;

[0018] Figure 2 It is a stereoscopic diagram from another perspective of an embodiment of the present invention;

[0019] Figure 3 An exploded view of an embodiment of the present invention;

[0020] Figure 4 This is a stereoscopic diagram of the camera detection module and the gantry bracket assembly according to an embodiment of the present invention;

[0021] Figure 5 A three-dimensional diagram of the camera detection module and the gantry bracket from another perspective according to an embodiment of the present invention;

[0022] Figure 6 An exploded view of a camera detection module and a gantry bracket according to an embodiment of the present invention;

[0023] Figure 7 A three-dimensional diagram of the assembly of the test module and the mounting base plate of an embodiment of the present invention;

[0024] Figure 8 A three-dimensional diagram of the test module and the mounting base plate of an embodiment of the present invention from another perspective;

[0025] Fig. 9 An exploded view of a test module and a mounting base plate according to an embodiment of the present invention;

[0026] Figure 9a for Fig. 9 A partial enlarged view of . DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and implementation modes.

[0028] like Figure 1-3 As shown, an embodiment of the present invention provides an AOI detection device, characterized in that it includes a machine base 100, and also includes: a camera detection module 200, which is arranged on the machine base 100 and is used to position the printed circuit board and collect image information of the workpiece; a printed circuit board test module 300, which is arranged on the machine base 100 and is located below the camera detection module 200, and is used to move the printed circuit board to the position of the camera detection module 200.

[0029] Here, the camera detection module 200 includes a positioning camera component and a detection camera component, which are respectively used to complete positioning, image acquisition and detection functions.

[0030] In this embodiment, specifically, the base 100 includes a mounting base plate 101 and a gantry bracket 102 disposed on the mounting base plate 101 ; the camera detection module 200 is disposed on the gantry bracket 102 , and the printed circuit board test module 300 is disposed on the upper surface of the mounting base plate 101 .

[0031] like Figure 4-6 As shown, the camera detection module 200 includes an X-axis moving component arranged on the front surface of the gantry bracket 102, a Z-axis moving component arranged on the X-axis moving component, and a detection camera component and a positioning camera component connected to the Z-axis moving component.

[0032] Specifically, the X-axis moving component includes an X-axis base 201 fixedly mounted on the front surface of the gantry bracket 102, a linear motor stator 202 and two mutually parallel X-axis guide rails 203 arranged on the X-axis base 201, an X-axis slider 204 movably arranged on the two X-axis guide rails 203, wherein each X-axis guide rail 203 is provided with two X-axis sliders 204; a linear motor mover 205 movably connected to the linear motor stator 202, and a Z-axis mounting base plate 206 whose back side is fixedly connected to the linear motor mover 205 and the X-axis sliders 204 on the two X-axis guide rails.

[0033] The Z-direction moving component includes a Z-direction slide main board 207 fixedly connected to the front surface of the Z-direction mounting base plate 206, a Z-direction slide sub-plate 208 movably arranged on the front surface of the Z-direction slide main board, a Z-direction screw rod 209 whose lower end is inserted into the Z-direction slide sub-plate 208 and movably connected thereto, that is, when the Z-direction screw rod 209 rotates, the Z-direction slide sub-plate 208 rises and falls in the Z direction, a motor mounting seat 210 arranged on the upper surface of the Z-direction slide main board 207, and a Z-direction motor 211 arranged on the motor mounting seat and whose output shaft is connected to the upper end of the Z-direction screw rod 209; the Z-direction slide main board 207 and the Z-direction slide sub-plate 208 are movably connected via two sets of Z-direction cross roller guides 212, that is, the Z-direction slide sub-plate 208 moves up and down in the Z direction relative to the Z-direction slide main board 207 via the two sets of Z-direction cross roller guides 212.

[0034] A Z-direction coupling 224 connected to the output shaft of the Z-direction motor 211 and the upper end of the Z-direction screw rod 209 respectively is also provided in the motor mounting seat 210 .

[0035] The detection camera assembly includes a detection camera seat 213 arranged on the front surface of the Z slide plate 208, a detection camera clamp 214 connected to the detection camera seat 213 for fixing the detection lens, a detection camera 215 arranged on the detection camera seat, and a detection lens 216 arranged on the detection camera 215 and located below it; the positioning camera assembly includes a positioning camera seat 217 arranged on the front surface of the Z slide plate 208, a positioning camera clamp 218 connected to the positioning camera seat 217 for fixing the positioning lens, a positioning camera 219 arranged on the positioning camera seat 217, a positioning lens 220 arranged on the positioning camera 219 and located below it, a light source bracket 221 arranged on one side surface of the positioning camera seat 217, a first light source 222 and a second light source 223 arranged on the light source bracket and placed up and down, wherein the first light source is located above the second light source and both are located below the positioning lens 220.

[0036] A first grating scale 225 is disposed on the upper surface of the X-axis base 201 , and a grating scale head 226 is disposed on the upper surface of the Z-axis mounting base plate 206 .

[0037] A fine-tuning block 227 is provided on the positioning camera seat 217 for fine-tuning the distance between the positioning camera 219 and the detection camera 215 .

[0038] In this module, in the X-direction moving component, the linear motor composed of the linear motor stator 202 and the linear motor mover 205 drives the Z-direction mounting base plate 206 to move in the X-direction, so that the position of the Z-direction mounting base plate 206 and the components mounted thereon in the X-direction can be adjusted; the Z-direction motor 211 in the Z-direction moving component drives the Z-direction lead screw 209 to rotate, driving the Z-slide sub-plate 208 movably connected to the Z-direction lead screw 209 to rise and fall in the Z-direction, thereby, the detection camera component and the positioning camera component are driven by the X-direction moving component and the Z-direction moving component to move in the XZ directions, so that the positioning camera 219 and the detection camera 215 are moved to the required positions, so that the focal lengths of the two cameras can be adjusted.

[0039] It should be noted that the dotted frame 228 in the figure is the detection range of the detection camera 215.

[0040] like Figure 7-9 As shown, the printed circuit board test module 300 includes an X-axis transfer component, a Z-axis lifting component arranged thereon, and a pressure component arranged above the Z-axis lifting component.

[0041] Specifically, the X-axis transfer assembly includes an X-axis main slide 301, two mutually parallel X-axis transfer guide rails 302 and a linear motor stator 303 arranged on the upper surface of the X-axis main slide, an X-axis transfer slider 304 arranged on the two X-axis transfer guide rails, wherein there are two X-axis transfer sliders 304 on each X-axis transfer guide rail, a linear motor mover 305 movably connected to the linear motor stator 303, a mover fixing block 306 fixedly connected to the linear motor mover, and a Z-axis bottom plate 307 whose back is fixedly connected to the mover fixing block 306 and the X-axis transfer sliders 304 on the two X-axis transfer guide rails. There are two linear motor stators 303 here, arranged in a straight line.

[0042] The Z-direction lifting assembly includes a lower platform plate 308 arranged on a Z-direction bottom plate 307, a Z-direction base 309 arranged on the upper surface of the lower platform plate, two sets of horizontal cross roller guide rails 310 arranged on the upper surface of the Z-direction base in the horizontal direction, a horizontal slide 311 arranged on the two sets of horizontal cross roller guide rails, a support inclined surface 311a is provided on the horizontal slide 311, a Z-direction slide 312 movably arranged on the horizontal slide 311, and a Z-direction slide 312a that fits the support inclined surface 311a is provided on the Z-direction slide 312; a horizontal power assembly arranged on the Z-direction base 309 and connected to the horizontal slide 311 for driving the horizontal slide to reciprocate linearly on the Z-direction base 309; and a horizontal power assembly arranged on the Z-direction base 309; a Z-direction auxiliary slide 313 on the upper surface of an end portion of the Z-direction slide 312; a jig base plate 314 disposed on the upper surface of the Z-direction slide 312, and a thread needle jig 316 disposed on the upper surface of the jig base plate 314 for placing a printed circuit board workpiece 315; one end of the Z-direction slide 312 is movably connected to a Z-direction guide rail 313a in a side surface of the Z-direction auxiliary slide 313 through two groups of Z-direction cross roller slides 317; when the horizontal slide 311 reciprocates linearly on the Z-direction base 309, the Z-direction slide 312 rises and falls relative to the Z-direction auxiliary slide 313; a group of oblique cross roller slides 318 are respectively provided on both sides of the support inclined surface 311a, and the Z-direction inclined surface 312a is connected to the oblique cross roller slides 318, such as Figure 9a shown.

[0043] Here, the thread needle fixture 316 is a commercially available standard part, and a spring is provided therein.

[0044] Specifically, the horizontal power assembly includes a horizontal motor 319 installed on the outer surface of the Z-axis auxiliary slide 313, a horizontal coupling 320 arranged in the Z-axis auxiliary slide 313 and connected to the output shaft of the horizontal motor 319, a horizontal bearing seat 321 installed on the Z-axis auxiliary slide 313, and a horizontal screw rod 322 one end of which passes through the horizontal bearing seat 321 and is connected to the horizontal coupling 320; the other end of the horizontal screw rod 322 is movably connected to the horizontal slide 311, that is, when the horizontal screw rod 322 rotates, the horizontal slide 311 makes a linear motion along its axial direction.

[0045] The pressure assembly includes two support plates 323 that are parallel to each other and stand on the upper surface of the lower platform plate 308, an upper platform plate 324 connected to the upper surfaces of the two support plates, a through hole 324a provided in the upper platform plate 324 for exposing the thread needle fixture 316 and the printed circuit board workpiece 315, a press frame slide 325 movably provided on the upper surface of the upper platform plate, and a press frame plate 326 provided in the press frame slide; the press frame slide and the press frame plate are both provided with square through holes 3a.

[0046] Here, two support plates 323 that are parallel to each other and stand on the upper surface of the lower platform plate 308 form a bracket supporting the upper platform plate 324. In order to make the bracket more stable, two reinforcing plates 327 are provided between the two support plates 323, and their two ends are respectively vertically connected to the two support plates 323.

[0047] The upper surface of the upper platform plate 324 is also provided with two mutually parallel Y-direction sliding guide rails 328 and a cylinder 329, and each Y-direction sliding guide rail 328 is provided with two Y-direction sliding sliders 330 connected to the bottom surface of the pressing frame slide 325, and a slider fixing plate 331 connected to the cylinder output shaft is provided on the lower surface of one end of the pressing frame slide 325; when the cylinder output shaft is extended or retracted, it drives the pressing frame slide 325 to reciprocate in the Y direction along the Y-direction sliding guide rail 328; so that the pressing frame slide and the pressing frame plate 326 inside it can leave the thread needle fixture 316 or move to the top of the thread needle fixture 316 and contact it.

[0048] An optical scale 332 is provided on the X-axis main slide 301, and an optical scale reader 333 located on the side of the optical scale 332 is provided on one side of the Z-axis base plate 307.

[0049] In this module, the linear motor composed of the linear motor stator 303 and the linear motor mover 305 in the X-direction transfer component drives the Z-direction base plate 307 and the components thereon to move in the X-direction; the horizontal motor 319 of the Z-direction lifting component drives the horizontal screw 322 to rotate, driving the horizontal slide 311 to make reciprocating linear motion on the Z-direction base 309, thereby driving the Z-direction slide 312 to rise and fall relative to the Z-direction auxiliary slide 313, and then driving the fixture base plate 314, the printed circuit board workpiece 315 and the thread needle fixture 316 to rise and fall in the Z direction; when the cylinder output shaft in the pressure component is extended and retracted, it drives the pressure frame slide 325 to reciprocate in the Y direction along the Y-direction sliding guide 328; so that the pressure frame slide and the pressure frame plate 326 inside it can leave the thread needle fixture 316 or move to the top of the thread needle fixture 316 and contact it.

[0050] In summary, when the printed board to be inspected is loaded, the frame pressing slide 325 and the frame pressing plate 326 therein are moved away. After loading onto the thread needle fixture 316, the frame pressing plate 326 is moved back and pressed onto the printed board workpiece 315 and the thread needle fixture 316. The X-axis transfer assembly moves the printed board to the bottom of the positioning camera assembly. The positioning camera 219 is driven by the Z-axis motor 211 and moves in the Z direction for focusing. After focusing, the alignment points on the printed board are identified and aligned. Here, the alignment points reserved by the printed board supplier when producing the printed board are generally selected for positioning at the four corners. The Z-axis lifting assembly pushes the thread needle fixture 316 to rise and contact with the frame pressing plate 326. Because the thread needle fixture has a spring inside and can be compressed, the elastic force of the spring makes the thread needle of the thread needle fixture 316 effectively contact the electrode of the printed board, ensuring smooth power supply and lighting up the LE on the printed board. D chip, the detection camera 215 collects images, the brightness of the tested chip is compared with the qualified parameters in the database, and after image processing, the defects on the printed circuit board are checked, and the defects are automatically marked / indicated for subsequent processing; then, the Z-axis lifting component lowers the needle fixture 316 to a height separated from the press frame plate 326, the X-axis transfer component moves the printed circuit board to the loading position, the press frame slide 325 and the press frame plate 326 therein are moved away, and the AOI inspection process is completed; therefore, the present detection device uses dual-camera recognition, and is separately provided with a positioning camera and a picture acquisition camera, with high alignment accuracy, and can be suitable for smaller gap picture recognition and respectively complete the functions of alignment and detection; compared with the mode of using a single lens to achieve positioning, sampling and other tasks, the detection device of the present invention greatly improves work efficiency.

[0051] In the above description, it should be noted that the terms "installed", "connected", "connected" and other corresponding terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two components.

[0052] Obviously, the embodiments described above are only some embodiments of the present invention, not all embodiments. The preferred embodiments of the present invention are given in the drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Any equivalent structure made by using the contents of the present invention specification and drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present invention.

Claims

1. An AOI inspection device, characterized in that: Including, the base, also includes: A camera detection module is arranged on the machine base, and includes a positioning camera component and a detection camera component, and is used to locate the printed circuit board and collect image information of the workpiece; A printed circuit board test module is arranged on the machine base and located below the camera detection module, and is used to move the printed circuit board to the position of the camera detection module; The machine base includes a mounting base plate and a gantry bracket arranged on the mounting base plate; the camera detection module is arranged on the gantry bracket, and the printed circuit board test module is arranged on the upper surface of the mounting base plate; The camera detection module includes an X-direction moving component arranged on the front surface of the gantry bracket, a Z-direction moving component arranged thereon, a detection camera component and a positioning camera component connected to the Z-direction moving component; The X-direction moving assembly includes an X-direction base fixedly arranged on the front surface of the gantry bracket, a linear motor stator and two mutually parallel X-direction guide rails arranged on the X-direction base, an X-direction slider movably arranged on the two X-direction guide rails, a linear motor mover movably connected to the linear motor stator, and a Z-direction mounting base plate whose back is fixedly connected to the linear motor mover and the X-direction sliders on the two X-direction guide rails; the Z-direction moving assembly includes a Z-direction slide mainboard fixedly connected to the front surface of the Z-direction mounting base plate, a Z-direction slide sub-plate movably arranged on the front surface of the Z-direction slide mainboard, a Z-direction lead screw whose lower end is inserted into the Z-direction slide sub-plate and movably connected to the Z-direction slide sub-plate, a motor mounting seat arranged on the upper surface of the Z-direction slide mainboard, and a Z-direction motor arranged on the motor mounting seat and whose output shaft is connected to the upper end of the Z-direction lead screw; the Z-direction slide mainboard and the Z-direction slide sub-plate are movably connected via two sets of Z-direction cross roller slide rails; The detection camera assembly includes a detection camera seat arranged on the front surface of the Z slide sub-plate, a detection camera clamp connected to the detection camera seat for fixing the detection lens, a detection camera arranged on the detection camera seat, and a detection lens arranged on the detection camera and located below the detection camera; the positioning camera assembly includes a positioning camera seat arranged on the front surface of the Z slide sub-plate, a positioning camera clamp connected to the positioning camera seat for fixing the positioning lens, a positioning camera arranged on the positioning camera seat, a positioning lens arranged on the positioning camera and located below the positioning camera, a light source bracket arranged on one side surface of the positioning camera seat, and a first light source and a second light source arranged on the light source bracket and placed up and down, both of which are located below the positioning lens; The printed circuit board test module includes an X-axis transfer component, a Z-axis lifting component arranged thereon, and a pressure component arranged above the Z-axis lifting component; The X-axis transfer assembly includes an X-axis main slide, two mutually parallel X-axis transfer guide rails and a linear motor stator arranged on the upper surface of the X-axis main slide, an X-axis transfer slider arranged on the two X-axis transfer guide rails, a linear motor mover movably connected to the linear motor stator, a mover fixing block fixedly connected to the linear motor mover, and a Z-axis bottom plate whose back is fixedly connected to the mover fixing block and the X-axis transfer sliders on the two X-axis transfer guide rails; the Z-axis lifting assembly includes a lower platform plate arranged on the Z-axis bottom plate, a Z-axis base arranged on the upper surface of the lower platform plate, two groups of horizontal cross roller slides in the horizontal direction arranged on the upper surface of the Z-axis base, a horizontal slide with a supporting inclined surface arranged on the two groups of horizontal cross roller slides, and a horizontal slide movably arranged on the horizontal slide and provided with A Z-direction slide with a Z-direction inclined surface that fits the supporting inclined surface; a horizontal power component arranged on the Z-direction base and connected to the horizontal slide for driving the horizontal slide to reciprocate linearly on the Z-direction base; a Z-direction auxiliary slide arranged on the upper surface of one end of the Z-direction base; a fixture base plate arranged on the upper surface of the Z-direction slide, and a thread needle fixture for placing printed circuit board workpieces arranged on the upper surface of the fixture base plate; one end of the Z-direction slide is movably connected to the Z-direction guide rail in one side surface of the Z-direction auxiliary slide through two groups of Z-direction cross roller slides; when the horizontal slide reciprocates linearly on the Z-direction base, the Z-direction slide rises and falls relative to the Z-direction auxiliary slide; a group of oblique cross roller slides are arranged on both sides of the supporting inclined surface, and the Z-direction inclined surface is connected to the oblique cross roller slides.

2. The AOI inspection device according to claim 1, characterized in that: The horizontal power assembly includes a horizontal motor installed on the outer side surface of the Z-axis auxiliary slide, a horizontal coupling arranged in the Z-axis auxiliary slide and connected to the output shaft of the horizontal motor, a horizontal bearing seat installed on the Z-axis auxiliary slide, and a horizontal lead screw with one end passing through the horizontal bearing seat and connected to the horizontal coupling; the other end of the horizontal lead screw is movably connected to the horizontal slide.

3. The AOI inspection device according to claim 1, characterized in that: The pressure assembly includes two support plates which are parallel to each other and stand on the upper surface of the lower platform plate, an upper platform plate connected to the upper surfaces of the two support plates, through holes provided in the upper platform plate for exposing the thread needle fixture and the printed circuit board workpiece, a press frame slide movably provided on the upper surface of the upper platform plate, and a press frame plate provided in the press frame slide; the press frame slide and the press frame plate are both provided with square through holes.

4. The AOI inspection device according to claim 3, characterized in that: The upper surface of the upper platform plate is also provided with two mutually parallel Y-direction sliding guide rails and a cylinder, each Y-direction sliding guide rail is provided with two Y-direction sliding sliders connected to the bottom surface of the pressing frame slide, and a slider fixing plate connected to the cylinder output shaft is provided on the lower surface of one end of the pressing frame slide; when the cylinder output shaft is extended or retracted, it drives the pressing frame slide to reciprocate in the Y direction along the Y-direction sliding guide rail.

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