Detection device and PCB detection equipment

Abstract

The utility model belongs to the technical field of PCB detection, and particularly relates to a detection device and PCB detection equipment. The detection device comprises a base, a cross beam, a first driving assembly, a visual detection assembly and a position feedback assembly, the cross beam is slidably connected with the base, the visual detection assembly is arranged on the cross beam, the first driving assembly is used for driving the cross beam and the visual detection assembly to reciprocate in the first direction, and the visual detection assembly is used for conducting visual detection on the material plate; the position feedback assembly comprises a first feedback piece and a second feedback piece, the first feedback piece is used for detecting the displacement of the cross beam in the first direction, the second feedback piece is used for detecting the displacement of the visual detection assembly in the first direction, the resolution ratio of the first feedback piece is different from that of the second feedback piece, and complementary measurement is carried out; the scanning speed of the visual detection assembly is ensured, and the detection precision of the visual detection assembly is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of PCB detection, and particularly relates to a detection device and a PCB detection equipment. Background Art

[0002] During the manufacturing process of PCB, due to process limitations and environmental factors, various defects often occur on the PCB, such as short circuits, open circuits, broken wires, poor solder joints, etc. In order to ensure the quality of the PCB, an online optical detection method is usually adopted to detect and identify these defects to ensure the reliability of the PCB products.

[0003] However, the current detection device has a low online detection accuracy, resulting in the inability to guarantee the detection results and detection quality. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is: aiming at the problem of low online detection accuracy of the existing detection device, a detection device and a PCB detection equipment are provided.

[0005] To solve the above technical problem, on the one hand, an embodiment of the utility model provides a detection device, including a base, a cross beam, a first driving component, a visual detection component and a position feedback component. The cross beam is slidably connected to the base. The visual detection component is arranged on the cross beam. The first driving component is used to drive the cross beam and the visual detection component to reciprocate along a first direction. The visual detection component is used to perform visual detection on a material plate.

[0006] The position feedback component includes a first feedback piece and a second feedback piece. The first feedback piece is used to detect the displacement of the first driving component in the first direction. The second feedback piece is used to detect the displacement of the visual detection component in the first direction. The resolution of the first feedback piece is different from that of the second feedback piece.

[0007] Optionally, the first feedback piece includes a first reading head and a first scale. The second feedback piece includes a second reading head. The first scale is installed on the base. The first reading head and the second reading head are installed at one end of the cross beam. The first reading head and the second reading head are used to respectively read the values of the first scale when the cross beam moves.

[0008] The first reading head is electrically connected to the first driving component. The second reading head is electrically connected to the visual detection component.

[0009] Optionally, the position feedback component further includes a third reading head and a second scale. The second scale is installed on the base. The third reading head is installed at the other end of the cross beam.

[0010] The third reading head is used to respectively read the values of the second scale when the cross beam moves, and the third reading head is electrically connected to the first driving component.

[0011] Optionally, the first driving component includes a first driving member and a second driving member. The first driving member and the second driving member are oppositely arranged on the base along the extending direction of the cross beam. One end of the cross beam is connected to the output end of the first driving member, and the other end of the cross beam is connected to the output end of the second driving member;

[0012] The first reading head is electrically connected to the first driving member; the third reading head is electrically connected to the second driving member.

[0013] Optionally, the base includes a first linear guide rail, a second linear guide rail, a first mounting seat and a second mounting seat. The first driving member and the first scale are arranged on the first mounting seat, and the second driving member and the second scale are arranged on the second mounting seat;

[0014] The first linear guide rail and the second linear guide rail extend along the first direction. The first linear guide rail is arranged on the first mounting seat and is connected to one end of the cross beam. The first driving member can drive one end of the cross beam to move along the first linear guide rail; the second linear guide rail is arranged on the second mounting seat and is connected to the other end of the cross beam. The second driving member can drive the other end of the cross beam to move along the second linear guide rail.

[0015] Optionally, the detection device further includes a second driving component. The second driving component is installed on the cross beam. The output end of the second driving component is connected to the vision detection component. The second driving component is used to drive the vision detection component to reciprocate along a second direction; wherein, the first direction and the second direction are not parallel and do not coincide;

[0016] The second driving component includes a third driving member and a mounting frame. The third driving member is installed on the cross beam. The output end of the third driving member is connected to the mounting frame. The mounting frame is slidably connected to the cross beam. The vision detection component is arranged on the mounting frame;

[0017] The third driving member can drive the mounting frame to reciprocate along the second direction to drive the vision detection component to reciprocate along the second direction.

[0018] Optionally, the detection device further includes an adsorption platform for adsorbing the material plate;

[0019] A roller assembly is provided on the mounting frame. When the first driving assembly drives the cross beam to move, the roller assembly can abut against the material plate and move on the surface of the material plate along the first direction.

[0020] Optionally, the roller assembly includes a roller connecting member and a plurality of rollers. The roller connecting member is provided on the mounting frame, and the plurality of rollers are spaced apart on the roller connecting member.

[0021] Optionally, the roller assembly further includes a guide rod and a bearing. The bearing is provided on the roller connecting member. The guide rod extends along the second direction. One end of the guide rod is connected to the roller, and one end of the guide rod passes through the bearing.

[0022] On the other hand, an embodiment of the present invention provides a PCB detection device, including a machine table, a flipping and conveying device, and the detection device as described above. The flipping and conveying device is used to flip the material plate. There are two detection devices. One of the detection devices, the flipping and conveying device, and the other detection device are sequentially arranged on the machine table along the first direction. One of the detection devices is used for visual detection of one surface of the material plate in the thickness direction, and the other detection device is used for visual detection of the other surface of the material plate in the thickness direction.

[0023] The detection device provided by the embodiment of the present invention can detect the displacement of the cross beam through the first feedback member, so that during the process of the first driving assembly driving the cross beam to move, the movement state of the cross beam can be tracked in real time through the first feedback member, and the displacement information of the cross beam can be provided. The displacement of the visual detection assembly can be detected through the second feedback member, and the displacement information of the visual detection assembly can be provided in real time. Complementary measurement is performed through the first feedback member and the second feedback member with different resolutions, and a high-precision displacement measurement value can be obtained during the movement of the cross beam and the visual detection assembly, while ensuring the scanning speed of the visual detection assembly, improving the detection accuracy and detection efficiency of the visual detection assembly. Description of the Drawings

[0024] Figure 1 is a schematic diagram of a detection device provided by an embodiment of the present invention;

[0025] Figure 2 is Figure 1 an enlarged schematic diagram of part A;

[0026] Figure 3 is a schematic diagram of a first driving assembly provided by an embodiment of the present invention;

[0027] Figure 4 is an exploded view of a detection device provided by an embodiment of the present invention.

[0028] The reference signs in the description are as follows:

[0029] 1. Base; 11. First mounting seat; 12. Second mounting seat; 13. First linear guide; 14. Second linear guide;

[0030] 2. Cross beam;

[0031] 3. First driving assembly; 31. First driving member; 311. First stator; 312. First rotor; 32. Second driving member; 321. Second stator; 322. Second rotor;

[0032] 4. Vision detection assembly;

[0033] 51. First feedback member; 511. First reading head; 512. First scale; 52. Second feedback member; 521. Second reading head; 53. Third reading head; 54. Second scale;

[0034] 6. Second driving assembly; 61. Third driving member; 62. Mounting frame;

[0035] 7. Roller assembly; 71. Roller connecting member; 72. Roller; 73. Guide rod; 74. Bearing; 75. Connecting rod;

[0036] 8. Adsorption platform;

[0037] a. First direction; b. Second direction. Detailed implementation manners

[0038] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0039] As Figures 1 to 4 shown, a detection device provided by an embodiment of the present utility model includes a base 1, a cross beam 2, a first driving assembly 3, a vision detection assembly 4 and a position feedback assembly. The cross beam 2 is slidably connected to the base 1. The vision detection assembly 4 is arranged on the cross beam 2. The first driving assembly 3 is used to drive the cross beam 2 and the vision detection assembly 4 to reciprocate along the first direction. The vision detection assembly 4 is used to perform vision detection on the material plate.

[0040] The position feedback assembly includes a first feedback member 51 and a second feedback member 52. The first feedback member 51 is used to detect the displacement of the cross beam 2 in the first direction a, and the second feedback member 52 is used to detect the displacement of the vision detection assembly 4 in the first direction a. The resolution of the first feedback member 51 is different from the resolution of the second feedback member 52.

[0041] The displacement of the cross beam 2 can be detected by the first feedback component 51, so that during the process of the first driving component 3 driving the cross beam 2 to move, the motion state of the cross beam 2 can be tracked in real time through the first feedback component 51, and the displacement information of the cross beam 2 can be provided. The displacement of the vision detection component 4 can be detected by the second feedback component 52, and the displacement information of the vision detection component 4 can be provided in real time. By performing complementary measurements with the first feedback component 51 and the second feedback component 52 with different resolutions, a high-precision displacement measurement value can be obtained during the movement of the cross beam 2 and the vision detection component 4, while ensuring the scanning speed of the vision detection component 4, improving the detection accuracy and detection efficiency of the vision detection component 4. At the same time, it can also avoid the interference caused by the common feedback component of the cross beam 2 and the vision detection component 4.

[0042] In this embodiment, the resolution of the first feedback component 51 is less than the resolution of the second feedback component 52. The first feedback component 51 with a smaller resolution can perform rough positioning and can measure a general position range, and at the same time, this position range provides an initial reference for the precise positioning of the second feedback component 52.

[0043] The second feedback component 52 with a larger resolution is used for precise positioning. Within the general range determined by the rough positioning, the high-resolution second feedback component 52 can detect smaller displacement changes. Due to its high resolution, it can provide more accurate position information to ensure that the vision detection component 4 accurately reaches the target position.

[0044] In this way, when the first feedback component 51 and the second feedback component 52 with different resolutions are used in cooperation, first, a large-range and rapid positioning is performed by the low-resolution first feedback component 51, and then precise adjustment is performed by the high-resolution second feedback component 52, ultimately achieving an improvement in the absolute positioning accuracy.

[0045] In one embodiment, as Figure 4 shown, the first feedback component 51 includes a first reading head 511 and a first scale 512, the second feedback component 52 includes a second reading head 521, the first scale 512 is installed on the base 1, the first scale 512 remains stationary on the base 1, the first reading head 511 and the second reading head 521 are installed at one end of the cross beam 2 and can move along with the cross beam 2, so that the first reading head 511 and the second reading head 521 can move relative to the first scale 512. The first reading head 511 and the second reading head 521 are used to respectively read the values of the first scale 512 when the cross beam 2 moves. The first reading head 511 is electrically connected to the first driving component 3, and the displacement of one end of the cross beam 2 in the first direction can be roughly measured through the first reading head 511 and the first scale 512. The second reading head 521 is electrically connected to the vision detection component 4 and can precisely measure the displacement of the vision detection component 4 in the first direction. The second reading head 521 can be precise to a smaller displacement amount to ensure the detection accuracy of the vision detection component 4 for the material plate.

[0046] Among them, the first driving component 3 is a linear motor. The linear motor includes a stator and a mover. The stator is installed on the base 1, and the mover is connected to the crossbeam 2. Through the relative movement between the mover and the stator, the crossbeam 2 is driven to move, so that the first reading head 511 and the second reading head 521 can move relative to the first scale 512.

[0047] In one embodiment, the first feedback member 51 is a first grating scale, the first scale 512 is a scale grating, and the power line and signal line of the first grating scale are connected to the linear motor controller. Through the closed-loop control of the first grating scale and the linear motor, it is ensured that the linear motor can drive the crossbeam 2 to accurately reach the target position and maintain a high position accuracy during the movement.

[0048] The second feedback member 52 is a second grating scale, and the output signal of the second grating scale is connected to the control system of the vision detection component 4, so that the vision detection component 4 can receive the position information sent by the second grating scale. Through the closed-loop control of the second grating scale and the vision detection component 4, each scanning point on the surface of the material plate can be accurately positioned, thereby improving the detection accuracy and enabling more accurate identification of defects on the surface of the material plate.

[0049] In an alternative embodiment, the first feedback member 51 includes a first reading head 511 and a first scale 512, the second feedback member 52 includes a second reading head 521 and a third scale (not shown), the first scale 512 and the third scale are installed on the base 1, the first scale 512 and the third scale remain stationary on the base 1, the first reading head 511 and the second reading head 521 are installed at one end of the crossbeam 2 and can move along with the crossbeam 2, so that the first reading head 511 can move relative to the first scale 512, the second reading head 521 can move relative to the third scale, the first reading head 511 is used to read the value of the first scale 512 to obtain the displacement of the crossbeam 2 in the first direction, and the second reading head 521 is used to read the value of the third scale to obtain the displacement of the vision detection component 4 in the first direction.

[0050] In one embodiment, as Figure 4 shown, the position feedback component further includes a third reading head 53 and a second scale 54. The second scale 54 is installed on the base 1 and remains stationary on the base 1. The third reading head 53 is installed at the other end of the crossbeam 2 and can move along with the crossbeam 2, so that the third reading head 53 can move relative to the second scale 54. The third reading head 53 is used to read the value of the second scale 54 when the crossbeam 2 moves. The third reading head 53 is electrically connected to the first driving component 3. Through the first reading head 511 and the second scale 54, the displacement of the other end of the crossbeam 2 in the first direction a can be roughly measured.

[0051] In this embodiment, a first reading head 511 and a third reading head 53 are respectively arranged at both ends of the cross beam 2 to measure the displacements at both ends of the cross beam 2, which can effectively reduce the measurement errors caused by factors such as the installation deviation, thermal deformation or mechanical vibration of the cross beam 2 itself. When measuring with a single reading head, error accumulation may occur. The reading heads at both ends can calibrate each other. When there is a deviation trend in the measurement result of one end reading head, the measurement result of the other end reading head can be referred to for timely correction, so as to ensure the position accuracy of the cross beam 2 during long-term operation.

[0052] Among them, the second scale 54 is a grating scale. The third reading head 53 and the second scale 54 form a third grating scale. The power line and signal line of the third grating scale are connected to the linear motor controller. Through the closed-loop control of the third grating scale and the linear motor, it is ensured that the linear motor drives the cross beam 2 to accurately reach the target position and maintain a high position accuracy during the movement.

[0053] In one embodiment, as Figure 3 , Figure 4 shown, the first driving assembly 3 includes a first driving member 31 and a second driving member 32. The first driving member 31 and the second driving member 32 are oppositely arranged on the base 1 along the extending direction of the cross beam 2. One end of the cross beam 2 is connected to the output end of the first driving member 31, and the other end of the cross beam 2 is connected to the output end of the second driving member 32. By acting on both ends of the cross beam 2 by the first driving member 31 and the second driving member 32, it helps to improve the stability of the cross beam 2 moving in the first direction and can also increase the load of the cross beam 2.

[0054] Among them, the first grating scale is in closed-loop control with the first driving member 31. The first reading head 511 is electrically connected to the first driving member 31. The displacement of one end of the cross beam 2 can be obtained through the first reading head 511. The third grating scale formed by the third reading head 53 and the second scale 54 is in closed-loop control with the second driving member 32. The third reading head 53 is electrically connected to the second driving member 32, and the displacement data of the other end of the cross beam 2 can be obtained. When the cross beam 2 moves, the first driving member 31 and the second driving member 32 can fine-tune their respective output forces or displacements according to the feedback of their respective corresponding reading heads to ensure that the cross beam 2 accurately reaches the target position and reduce the deviation that may be caused by a single driving member.

[0055] In one embodiment, as Figure 4As shown, the first driving member 31 is a linear motor. The first driving member 31 includes a first stator 311 and a first mover 312. The first stator 311 is installed on the base 1, and the first mover 312 is connected to one end of the cross beam 2. Through the relative movement between the first mover 312 and the first stator 311, one end of the cross beam 2 is driven to move. The second driving member 32 is a linear motor. The second driving member 32 includes a second stator 321 and a second mover 322. The second stator 321 is installed on the base 1, and the second mover 322 is connected to the other end of the cross beam 2. Through the relative movement between the second mover 322 and the second stator 321, the other end of the cross beam 2 is driven to move.

[0056] In one embodiment, as Figure 3 、 Figure 4 shown, the base 1 includes a first linear guide rail 13, a second linear guide rail 14, a first mounting seat 11 and a second mounting seat 12. The first driving member 31 and the first scale 512 are arranged on the first mounting seat 11, and the second driving member 32 and the second scale 54 are arranged on the second mounting seat 12. The cross beam 2 is connected between the first mounting seat 11 and the second mounting seat 12.

[0057] The first linear guide rail 13 and the second linear guide rail 14 extend along the first direction a. The first linear guide rail 13 is arranged on the first mounting seat 11 and is connected to one end of the cross beam 2. The first driving member 31 can drive one end of the cross beam 2 to move along the first linear guide rail 13; the second linear guide rail 14 is arranged on the second mounting seat 12 and is connected to the other end of the cross beam 2. The second driving member 32 can drive the other end of the cross beam 2 to move along the second linear guide rail 14. The cross beam 2 realizes sliding relative to the base 1 through the first linear guide rail 13 and the second linear guide rail 14. By extending along the first direction through the first linear guide rail 13 and the second linear guide rail 14, accurate linear motion guidance is provided for the cross beam 2, which can ensure that the cross beam 2 moves along a predetermined linear trajectory during the movement along the first direction, and avoid detection errors caused by the deviation of the movement trajectory of the cross beam 2.

[0058] In one embodiment, as Figure 1 shown, the detection device further includes a second driving assembly 6. The second driving assembly 6 is installed on the cross beam 2, and the output end of the second driving assembly 6 is connected to the vision detection assembly 4. The second driving assembly 6 is used to drive the vision detection assembly 4 to reciprocate along the second direction; wherein, the first direction and the second direction are not parallel and do not coincide.

[0059] When performing optical detection on sheet materials of different thicknesses, according to the thickness of the sheet material, the second driving assembly 6 drives the vision detection assembly 4 to move along the second direction to adjust the distance between the vision detection assembly 4 and the surface of the sheet material.

[0060] In one embodiment, as Figure 1As shown in the figure, the second driving assembly 6 includes a third driving member 61 and a mounting bracket 62. The third driving member 61 is mounted on the cross beam 2. The output end of the third driving member 61 is connected to the mounting bracket 62. The mounting bracket 62 is slidably connected to the cross beam 2. The vision detection assembly 4 is disposed on the mounting bracket 62. The third driving member 61 can drive the mounting bracket 62 to reciprocate along the second direction, so as to drive the vision detection assembly 4 to reciprocate along the second direction b, thereby adjusting the distance between the vision detection assembly 4 and the material plate.

[0061] Wherein, the first direction a and the second direction b are perpendicular. The first direction a is the horizontal direction, and the second direction b is the vertical direction. The third driving member 61 is a motor. The motor is connected to the mounting bracket 62 through a combination of a lead screw and a lead screw nut. The rotation of the motor is converted into a linear motion through the lead screw and the lead screw nut, so that the mounting bracket 62 can move up and down, thereby driving the vision detection assembly 4 to move up and down.

[0062] In this embodiment, the vision detection assembly 4 includes a plurality of line scan cameras. When the vision detection assembly 4 moves along the first direction with the cross beam 2, a relative motion occurs between the line scan cameras and the material plate. The linear cameras sequentially acquire the image information on the surface of the material plate to realize the scanning of the material plate.

[0063] In one embodiment, the detection device further includes an adsorption platform 8. The adsorption platform 8 is used to adsorb the material plate. The material plate is adsorbed and positioned on the adsorption platform 8, so that when the vision detection assembly 4 moves along the first direction with the cross beam 2, a relative motion occurs between the line scan cameras and the material plate.

[0064] A roller assembly 7 is arranged on the mounting bracket 62. When the first driving assembly 3 drives the cross beam 2 to move, the roller assembly 7 can abut against the material plate and move on the surface of the material plate along the first direction. As the roller assembly 7 moves, the roller assembly 7 can pass over the surface of the material plate to assist the adsorption platform 8 in adsorbing the material plate, so that the material plate maintains good flatness and prevents the material plate from warping at the edge.

[0065] In one embodiment, as Figure 2 shown, the roller assembly 7 includes a roller connecting member 71 and a plurality of rollers 72. The roller connecting member 71 is arranged on the mounting bracket 62. The plurality of rollers 72 are arranged at intervals on the roller connecting member 71. By contacting the material plate with the plurality of rollers 72, under the action of the rollers 72, it is ensured that the material plate can be completely attached to the adsorption platform 8. At the same time, the friction on the material plate can be reduced through the rollers 72 to prevent damage to the material plate.

[0066] In one embodiment, the roller assembly 7 further includes a guide rod 73 and a bearing 74. The bearing 74 is disposed on the roller connector 71. The guide rod 73 extends along the second direction b. One end of the guide rod 73 is connected to the roller 72. One end of the guide rod 73 is passed through the bearing 74. The guide rod 73 can be guided by the bearing 74 so that the roller 72 can move up and down along the second direction. When the roller 72 contacts the surface of the sheet, the movement of the guide rod 73 in the bearing 74 can prevent the roller 72 from exerting too much force on the surface of the sheet and damaging the sheet, and plays a buffering role when the sheet contacts the roller 72.

[0067] There are two guide rods 73 , and the number of bearings 74 is consistent with the number of guide rods 73 , which can ensure that the forces on both sides of the roller 72 are more balanced and play a better buffering role.

[0068] Furthermore, the roller assembly 7 also includes a connecting rod 75, and the two guide rods 73 of each roller 72 are connected by the connecting rod 75, wherein one end of one guide rod 73 is connected to the roller 72, and the other end passes through the corresponding bearing 74 and is connected to one end of the connecting rod 75, and one end of the other guide rod 73 is connected to the roller 72, and the other end passes through the corresponding bearing 74 and is connected to the other end of the connecting rod 75. The connecting rod 75 is located on the side of the roller connecting member 71 away from the roller 72, and the connecting rod 75 is used to prevent the guide rod 73 from disengaging from the bearing 74 when moving up and down.

[0069] On the other hand, an embodiment of the utility model provides a PCB inspection device, including a machine table, a flipping and conveying device, and the inspection device of the above embodiment, the flipping and conveying device is used to flip the material plate, and two inspection devices are provided, one inspection device, the flipping and conveying device and the other inspection device are arranged on the machine table in sequence along a first direction, one inspection device is used to perform visual inspection on one side surface of the material plate in the thickness direction, and the other inspection device is used to perform visual inspection on the other side surface of the material plate in the thickness direction.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A detection device, characterized in that, It includes a base, a cross beam, a first driving component, a vision detection component and a position feedback component. The cross beam is slidably connected to the base. The vision detection component is arranged on the cross beam. The first driving component is used to drive the cross beam and the vision detection component to reciprocate in a first direction. The vision detection component is used to perform vision detection on the material plate; The position feedback component includes a first feedback member and a second feedback member. The first feedback member is used to detect the displacement of the cross beam in the first direction. The second feedback member is used to detect the displacement of the vision detection component in the first direction. The resolution of the first feedback member is different from that of the second feedback member.

2. The detection device according to claim 1, characterized in that, The first feedback member includes a first reading head and a first scale. The second feedback member includes a second reading head. The first scale is installed on the base. The first reading head and the second reading head are installed at one end of the cross beam. The first reading head and the second reading head are used to respectively read the values of the first scale when the cross beam moves; The first reading head is electrically connected to the first driving component. The second reading head is electrically connected to the vision detection component.

3. The detection device according to claim 2, wherein The position feedback component further includes a third reading head and a second scale. The second scale is installed on the base. The third reading head is installed at the other end of the cross beam; The third reading head is used to read the value of the second scale when the cross beam moves. The third reading head is electrically connected to the first driving component.

4. The detection device according to claim 3, characterized in that, The first driving component includes a first driving member and a second driving member. The first driving member and the second driving member are oppositely arranged on the base along the extending direction of the cross beam. One end of the cross beam is connected to the output end of the first driving member. The other end of the cross beam is connected to the output end of the second driving member; The first reading head is electrically connected to the first driving member; The third reading head is electrically connected to the second driving member.

5. The detection device according to claim 4, wherein The base includes a first linear guide rail, a second linear guide rail, a first mounting seat and a second mounting seat. The first driving member and the first scale are arranged on the first mounting seat. The second driving member and the second scale are arranged on the second mounting seat; The first linear guide rail and the second linear guide rail extend along the first direction. The first linear guide rail is arranged on the first mounting seat and is connected to one end of the cross beam. The first driving member can drive one end of the cross beam to move along the first linear guide rail; The second linear guide rail is arranged on the second mounting seat and is connected to the other end of the cross beam. The second driving member can drive the other end of the cross beam to move along the second linear guide rail.

6. The detection device according to any one of claims 1-5, characterized in that, The detection device further includes a second driving component. The second driving component is installed on the cross beam. The output end of the second driving component is connected to the vision detection component. The second driving component is used to drive the vision detection component to reciprocate in a second direction; wherein, the first direction and the second direction are not parallel and do not coincide; The second driving component includes a third driving member and a mounting bracket. The third driving member is mounted on the cross beam, the output end of the third driving member is connected to the mounting bracket, the mounting bracket is slidably connected to the cross beam, and the vision detection component is arranged on the mounting bracket; The third driving member can drive the mounting bracket to reciprocate along the second direction, so as to drive the vision detection component to reciprocate along the second direction.

7. The detection device according to claim 6, characterized in that, The detection device further includes a suction platform for sucking the material plate; A roller assembly is arranged on the mounting bracket. When the first driving component drives the cross beam to move, the roller assembly can abut against the material plate and move on the surface of the material plate along the first direction.

8. The detection device according to claim 7, characterized in that, The roller assembly includes a roller connecting member and a plurality of rollers. The roller connecting member is arranged on the mounting bracket, and the plurality of rollers are arranged at intervals on the roller connecting member.

9. The detection device according to claim 8, characterized in that, The roller assembly further includes a guide rod and a bearing. The bearing is arranged on the roller connecting member. The guide rod extends along the second direction. One end of the guide rod is connected to the roller, and one end of the guide rod passes through the bearing.

10. A PCB detection device, characterized in that, It includes a machine table, a flipping and conveying device and the detection device according to any one of claims 1-9. The flipping and conveying device is used for flipping the material plate. There are two detection devices. One of the detection devices, the flipping and conveying device and the other detection device are arranged on the machine table in sequence along the first direction. One of the detection devices is used for visually detecting one surface of the material plate in the thickness direction, and the other detection device is used for visually detecting the other surface of the material plate in the thickness direction.

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