Detection device and PCB detection equipment

Abstract

The utility model belongs to the technical field of camera detection, and relates to a detection device and PCB detection equipment. The detection device comprises a supporting mechanism, a first photographing mechanism, a second photographing mechanism, a first reflecting mechanism and a second reflecting mechanism, the supporting mechanism is provided with a first side and a second side which are opposite to each other, and the first photographing mechanism is arranged on the first side of the supporting mechanism; the second photographing mechanism is arranged on the second side of the supporting mechanism; the center line of the visual field of the first photographing mechanism intersects with the center line of the visual field of the second photographing mechanism; the first reflecting mechanism is used for reflecting an image of a first position of a to-be-detected workpiece to the first photographing mechanism, and the image is photographed by the first photographing mechanism; and the second reflecting mechanism is used for reflecting an image of a second position of the workpiece to be detected to the second photographing mechanism, and the image is photographed by the second photographing mechanism. The detection device can improve the detection speed and precision.

Description

Technical Field

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

[0002] Currently, PCB (Printed Circuit Board) production is gradually developing towards high precision, fine lines, dense construction, and multi-layered manufacturing. To ensure quality and reliability, AOI (Automated Optical Inspection) inspection is often required during the production process to confirm the quality of PCB circuit boards. However, existing AOI inspection equipment mostly uses a single camera for photo inspection. When the resolution of existing cameras reaches the 5-micron level, the line scan target size is smaller than the actual external dimensions, making it difficult to meet the required accuracy. Utility Model Content

[0003] The technical problem to be solved by the present invention is: to provide a detection device and a PCB detection device in view of the technical problem that the existing AOI detection equipment using a single camera is difficult to meet the accuracy requirements.

[0004] To solve the above technical problems, on the one hand, an embodiment of the present utility model provides a detection device, comprising a support mechanism, a first camera mechanism, a second camera mechanism, a first reflection mechanism, and a second reflection mechanism, wherein the support mechanism has a first side and a second side opposite to each other, the first camera mechanism is disposed on the first side of the support mechanism, and the second camera mechanism is disposed on the second side of the support mechanism;

[0005] The center line of the field of view of the first camera mechanism and the center line of the field of view of the second camera mechanism;

[0006] The first reflecting mechanism is used to reflect the image of the first position of the workpiece to be measured to the first photographing mechanism, and the first photographing mechanism takes the image;

[0007] The second reflecting mechanism is used to reflect the image of the second position of the workpiece to be measured to the second photographing mechanism, so that the second photographing mechanism takes the image;

[0008] The image reflected by the first reflecting mechanism and the image reflected by the second reflecting mechanism are arranged linearly on the workpiece to be measured.

[0009] According to the detection device of the embodiment of the present invention, the first camera mechanism and the second camera mechanism are respectively arranged on opposite sides of the support mechanism, and the first reflection mechanism is used to reflect the image of the first position of the workpiece to be measured to the first camera mechanism, and the second reflection mechanism is used to reflect the image of the second position of the workpiece to be measured to the second camera mechanism. The first camera mechanism and the second camera mechanism are used to photograph different positions to improve the resolution of AOI visual inspection. By piecing together the images taken by each camera mechanism, a larger-scale synchronous image acquisition inspection is completed, thereby improving the AOI inspection speed and accuracy.

[0010] Optionally, the workpiece to be measured is provided with a plurality of first positions and a plurality of second positions arranged alternately;

[0011] There are multiple first photographing mechanisms, multiple second photographing mechanisms, multiple first reflecting mechanisms, and multiple second reflecting mechanisms.

[0012] A plurality of the first photographing mechanisms are arranged at intervals along a first direction on the first side of the support mechanism, and a plurality of the second photographing mechanisms are arranged at intervals along the first direction on the second side of the support mechanism; along the first direction, the plurality of the first photographing mechanisms and the plurality of the second photographing mechanisms are arranged alternately and staggered;

[0013] The plurality of first reflecting mechanisms are provided in a one-to-one correspondence with the plurality of first photographing mechanisms, and the plurality of first reflecting mechanisms are provided in a one-to-one correspondence with the plurality of first positions. The first reflecting mechanisms are configured to reflect images corresponding to the first positions to the corresponding first photographing mechanisms, so that the images are photographed by the corresponding first photographing mechanisms.

[0014] Multiple second reflecting mechanisms are arranged in a one-to-one correspondence with multiple second photographing mechanisms, and multiple second reflecting mechanisms are arranged in a one-to-one correspondence with multiple second positions. The second reflecting mechanism is used to reflect the image corresponding to the second position to the corresponding second photographing mechanism, which is photographed by the second photographing mechanism.

[0015] Optionally, the first photographing mechanism and the second photographing mechanism both include a photographing structure and a fine-tuning structure, wherein the fine-tuning structure is mounted on the supporting mechanism, and the photographing structure is mounted on the fine-tuning structure, and the fine-tuning structure is used to adjust the photographing angle of the photographing structure;

[0016] The photographing structure of the first photographing mechanism is used to photograph the image reflected to the first photographing mechanism;

[0017] The photographing structure of the second photographing mechanism is used to photograph the image reflected to the second photographing mechanism.

[0018] Optionally, the fine-tuning structure includes a first adjustment plate, a first fine-tuning assembly, and a clamping assembly, wherein the first adjustment plate is mounted on the supporting mechanism, the clamping assembly is placed on the first adjustment plate, and the clamping assembly is used to clamp the shooting structure;

[0019] The first fine-tuning assembly is mounted on the first adjustment plate and connected to the clamping assembly, and the first fine-tuning assembly is used to rotate the clamping assembly around a first rotation axis in a first rotation direction, and to make the clamping assembly move linearly in a second direction;

[0020] An extending direction of the first rotation axis intersects with the second direction.

[0021] Optionally, the first adjustment plate is provided with a first sliding groove, the clamping assembly is provided with a first guide member, and the first guide member is slidably placed in the first sliding groove;

[0022] When the clamping assembly rotates along the first rotation direction, the first guide member slides relative to the first sliding groove along the first rotation direction;

[0023] When the clamping assembly moves linearly along the second direction, the first guide member slides relative to the first sliding groove along the second direction.

[0024] Optionally, the first fine-tuning assembly includes a first fine-tuning block, a first fastener, and a second fastener, the first fine-tuning block being mounted on the first adjustment plate, the first fine-tuning block being provided with a first fastening hole and a second fastening hole spaced apart along the third direction, the first fastener being threadedly connected to the first fastening hole and abutting against the clamping assembly, and the second fastener being threadedly connected to the second fastening hole and abutting against the clamping assembly;

[0025] The extending direction of the first rotation axis, the third direction and the second direction intersect with each other.

[0026] Optionally, the clamping assembly includes a clamping base plate and a plurality of clamping claws, the clamping base plate is placed on the first adjustment plate, the first guide member is arranged on the clamping base plate, and the plurality of clamping claws are installed at intervals on the edge of the clamping base plate, and the plurality of clamping claws cooperate with each other to clamp the shooting structure.

[0027] Optionally, the fine-tuning structure further includes a second adjustment plate, a third adjustment plate, and a second fine-tuning assembly, wherein the third adjustment plate is mounted on the support mechanism, the second adjustment plate is rotatably connected to the third adjustment plate about a second rotation axis along a second rotation direction, the second fine-tuning assembly is mounted on the third adjustment plate and connected to the second adjustment plate, and the second fine-tuning assembly is used to rotate the second adjustment plate along the second rotation direction;

[0028] The first adjustment plate is mounted on the second adjustment plate;

[0029] The second rotation axis intersects the first rotation axis.

[0030] Optionally, the second fine-tuning assembly includes a second fine-tuning block, a third fine-tuning block, a third fastener, and a fourth fastener. The second fine-tuning block and the third fine-tuning block are installed on the third adjustment plate at intervals along a fourth direction. The second fine-tuning block is provided with a third fastening hole, and the third fine-tuning block is provided with a fourth fastening hole. The third fastener is threadedly connected to the third fastening hole and abuts against the second adjustment plate. The fourth fastener is threadedly connected to the fourth fastening hole and abuts against the second adjustment plate.

[0031] An extending direction of the second rotation axis intersects with the fourth direction.

[0032] Optionally, a positioning groove is provided on a side of the third adjustment plate facing the second adjustment plate, and a positioning hole is provided on the second adjustment plate at a position corresponding to the positioning groove;

[0033] The fine-tuning structure further includes a rotation positioning block, one end of which is inserted into the positioning groove, and the other end of which is inserted into the positioning hole;

[0034] Optionally, the second adjustment plate is further provided with a rotation limiting hole;

[0035] The fine-tuning structure also includes a rotation limiter, one end of which is connected to the third adjustment plate, and the other end of which is accommodated in the rotation limiter hole; when the second adjustment plate rotates along the second rotation direction, the rotation limiter hole can move relative to the rotation limiter.

[0036] The fine-tuning structure further includes a fourth adjustment plate, the fourth adjustment plate is mounted on the support mechanism, and the third adjustment plate is slidably connected to the fourth adjustment plate along a fifth direction;

[0037] An extending direction of the second rotation axis intersects with the fifth direction;

[0038] A second sliding groove extending along the fifth direction is provided on a side of the fourth adjustment plate facing the third adjustment plate, and a second guide member is provided on a side of the third adjustment plate facing the fourth adjustment plate, wherein the second guide member is slidably connected to the second sliding groove;

[0039] A first sliding positioning block and a second sliding positioning block are further provided on a side of the fourth adjustment plate facing the third adjustment plate. The first sliding positioning block and the second sliding positioning block are respectively provided at two ends of the second sliding groove along the fifth direction. The first sliding positioning block and the second sliding positioning block are used to limit the sliding of the second guide member.

[0040] The third adjustment plate is further provided with a sliding limiting hole;

[0041] The fine-tuning structure also includes a sliding limiter, one end of which is connected to the fourth adjustment plate, and the other end of which is accommodated in the sliding limiter hole; when the third adjustment plate slides relative to the fourth adjustment plate, the sliding limiter hole can move relative to the sliding limiter.

[0042] Optionally, the supporting mechanism includes a supporting member, and the fourth adjustment plate is slidably connected to the supporting member along the first direction;

[0043] The extension direction of the second rotation axis, the first direction, and the fifth direction intersect each other;

[0044] The support member is provided with a third sliding groove extending along the first direction, and the fourth adjustment plate is provided with a third guide member on a side facing the support member, and the third guide member is slidably connected to the third sliding groove;

[0045] The detection device further includes a lifting mechanism, the supporting mechanism is connected to the lifting mechanism, and the lifting mechanism is used to drive the supporting mechanism to move along a sixth direction;

[0046] The sixth direction intersects with each of the first direction and the fifth direction.

[0047] Optionally, the shooting structure includes a camera, a first heat sink, a lens, and a second heat sink; the clamping assembly is used to clamp the camera; the lens and the first heat sink are mounted on the camera; the second heat sink is mounted on the lens; the first heat sink is used to dissipate heat for the camera; and the second heat sink is used to dissipate heat for the lens;

[0048] The axis of the lens of the first camera mechanism intersects the axis of the lens of the second camera mechanism;

[0049] The first reflecting mechanism includes a first reflecting mirror, which is installed on the first side of the supporting mechanism, and is used to reflect the image of the first position of the workpiece to be measured to the first photographing mechanism;

[0050] The second reflecting mechanism includes a second reflecting mirror, which is installed on the second side of the supporting mechanism, and is used to reflect the image of the second position of the workpiece to be measured to the second photographing mechanism;

[0051] An acute angle is formed between the mirror surface of the first reflector and the workpiece to be measured; an acute angle is formed between the mirror surface of the second reflector and the workpiece to be measured;

[0052] The detection device further includes a light source mechanism, which is mounted on the support mechanism and is used to provide light toward the first position and the second position of the workpiece to be measured.

[0053] On the other hand, an embodiment of the present invention provides a PCB testing device, comprising a workbench and the above-mentioned testing device, wherein the supporting mechanism is installed on the workbench, and the workbench is provided with a carrier for placing the workpiece to be tested.

[0054] According to the PCB inspection equipment of the embodiment of the present invention, the first camera mechanism and the second camera mechanism are respectively arranged on opposite sides of the support mechanism, and the first reflection mechanism is used to reflect the image of the first position of the workpiece to be measured to the first camera mechanism, and the second reflection mechanism is used to reflect the image of the second position of the workpiece to be measured to the second camera mechanism. The first camera mechanism and the second camera mechanism are used to photograph different positions to improve the resolution of AOI visual inspection. By piecing together the images taken by each camera mechanism, a larger-scale synchronous image acquisition inspection is completed, thereby improving the AOI inspection speed and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 It is a schematic diagram of a detection device provided by an embodiment of the present utility model;

[0056] Figure 2 yes Figure 1 A magnified schematic diagram of point A in the middle;

[0057] Figure 3 yes Figure 1 A schematic diagram from another angle;

[0058] Figure 4 yes Figure 1 A schematic diagram from another angle;

[0059] Figure 5 yes Figure 1 Schematic diagram of the assembly of the first photographing mechanism and the supporting mechanism;

[0060] Figure 6 yes Figure 5 Schematic diagram of the first photographing mechanism;

[0061] Figure 7 yes Figure 6 A schematic diagram from another angle;

[0062] Figure 8 yes Figure 6 Exploded diagram.

[0063] The reference numerals in the specification are as follows:

[0064] 100, support mechanism; 200, first camera mechanism; 300, second camera mechanism; 400, first reflection mechanism; 500, second reflection mechanism; 600, lifting mechanism; 700, light source mechanism; 80, camera mechanism; 90, fine-tuning mechanism;

[0065] 1. First adjustment plate; 101. First chute;

[0066] 2. First fine-tuning assembly; 201. First fine-tuning block; 2011. First fastening hole; 2012. Second fastening hole;

[0067] 3. Clamping assembly; 301. First guide member; 302. Clamping base plate; 303. Clamping claw;

[0068] 4. Second adjustment plate; 401. Positioning hole; 402. Rotation limit hole;

[0069] 5. Third adjustment plate; 501. Positioning slot; 502. Second guide member; 503. Sliding limit hole;

[0070] 6. Second fine-tuning assembly; 601. Second fine-tuning block; 6011. Third fastening hole; 602. Third fine-tuning block; 6021. Fourth fastening hole;

[0071] 7. Rotation positioning block;

[0072] 8. Rotation limiter;

[0073] 9. Fourth adjustment plate; 901. Second slide groove; 902. First sliding positioning block; 903. Second sliding positioning block; 904. Third guide member;

[0074] 10. Sliding limiter;

[0075] 11. Support member; 1101. Third chute;

[0076] 12. Camera; 13. First heat sink; 14. Lens; 15. Second heat sink;

[0077] x, first direction; y, second direction; a, third direction; b, fourth direction; z, fifth direction. DETAILED DESCRIPTION

[0078] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is 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 invention and are not intended to limit the present invention.

[0079] like Figures 1 to 8 As shown, the detection device provided by an embodiment of the present invention includes a supporting mechanism 100, a first photographing mechanism 200, a second photographing mechanism 300, a first reflecting mechanism 400 and a second reflecting mechanism 500. The supporting mechanism 100 has a first side and a second side relative to each other. The first photographing mechanism 200 is arranged on the first side of the supporting mechanism 100, and the second photographing mechanism 300 is arranged on the second side of the supporting mechanism 100.

[0080] The center line of the field of view of the first photographing mechanism 200 intersects with the center line of the field of view of the second photographing mechanism 300 .

[0081] The first reflection mechanism 400 is used to reflect the image of the first position of the workpiece to be measured to the first photographing mechanism 200 , which then photographs the image.

[0082] The second reflecting mechanism 500 is used to reflect the image of the second position of the workpiece to be measured to the second photographing mechanism 300 , so that the second photographing mechanism 300 can take the image.

[0083] The first position and the second position are arranged linearly on the workpiece to be measured, so that the image reflected by the first reflection mechanism 400 and the image reflected by the second reflection mechanism 500 can be arranged linearly on the workpiece to be measured.

[0084] In the detection device provided by the embodiment of the present invention, a first camera mechanism 200 and a second camera mechanism 300 are respectively arranged on opposite sides of a support mechanism 100, and a first reflection mechanism 400 is used to reflect an image of a first position of the workpiece to be measured to the first camera mechanism 200, and a second reflection mechanism 500 is used to reflect an image of a second position of the workpiece to be measured to the second camera mechanism 300. The first camera mechanism 200 and the second camera mechanism 300 are used to photograph different positions to improve the resolution of AOI visual inspection. By piecing together the images taken by each camera mechanism, a larger-scale synchronous image acquisition inspection is completed, thereby improving the speed and accuracy of AOI inspection.

[0085] In one embodiment, the workpiece to be measured is provided with a plurality of first positions and a plurality of second positions that are alternately arranged.

[0086] Correspondingly, if Figures 1 to 4 As shown, there are multiple first photographing mechanisms 200, multiple second photographing mechanisms 300, multiple first reflecting mechanisms 400, and multiple second reflecting mechanisms 500.

[0087] The plurality of first photographing mechanisms 200 are spaced apart along the first direction x on a first side of the support mechanism 100, and the plurality of second photographing mechanisms 300 are spaced apart along the first direction x on a second side of the support mechanism 100. Along the first direction x, the plurality of first photographing mechanisms 200 and the plurality of second photographing mechanisms 300 are alternately staggered.

[0088] Multiple first reflecting mechanisms 400 are arranged in a one-to-one correspondence with multiple first photographing mechanisms 200, and multiple first reflecting mechanisms 400 are arranged in a one-to-one correspondence with multiple first positions. The first reflecting mechanism 400 is used to reflect the image of the corresponding first position to the corresponding first photographing mechanism 200, which is photographed by the corresponding first photographing mechanism 200.

[0089] Multiple second reflecting mechanisms 500 are arranged in a one-to-one correspondence with multiple second photographing mechanisms 300, and multiple second reflecting mechanisms 500 are arranged in a one-to-one correspondence with multiple second positions. The second reflecting mechanism 500 is used to reflect the image of the corresponding second position to the corresponding second photographing mechanism 300, which is photographed by the second photographing mechanism 300.

[0090] By setting up multiple first photographing mechanisms 200 and multiple second photographing mechanisms 300 for image stitching, the image taking length is increased to prepare for puzzle.

[0091] In one embodiment, a first inclined surface suitable for mounting with the first camera mechanism 200 is formed on the first side of the support mechanism 100, and a second inclined surface suitable for mounting with the second camera mechanism 300 is provided on the second side of the support mechanism 100. The angle between the first inclined surface and the workpiece to be measured is 0-90°, and the angle between the second inclined surface and the workpiece to be measured is 0-90°. Correspondingly, an angle will also be formed between the center line of the field of view of the first camera mechanism 200 and the center line of the field of view of the second camera mechanism 300. The angle between the center line of the field of view of the first camera mechanism 200 and the center line of the field of view of the second camera mechanism 300 is substantially the same as the angle between the first inclined surface and the second inclined surface. It can be understood that if the first camera mechanism 200 and the second camera mechanism 300 are not provided with a fine-tuning structure (such as Figures 5 to 8 ), the angle between the center line of the field of view of the first camera mechanism 200 and the center line of the field of view of the second camera mechanism 300 is consistent with the angle between the first inclined surface and the second inclined surface; if the first camera mechanism 200 and the second camera mechanism 300 are provided with a fine-tuning structure (such as Figures 5 to 8 If the fine-tuning structure 90 is not shown in FIG, the angle between the center line of the field of view of the first photographing mechanism 200 and the center line of the field of view of the second photographing mechanism 300 and the angle between the first inclined surface and the second inclined surface will deviate slightly.

[0092] Preferably, Figures 1 to 4In the illustrated embodiment, the angle between the first inclined surface and the workpiece to be measured is 45°, and the angle between the second inclined surface and the workpiece to be measured is 45°. Thus, the angle between the first inclined surface and the second inclined surface is 90°. The staggered arrangement of the camera mechanisms is achieved by securing the support mechanism 100 to the first camera mechanism 200 and the second camera mechanism 300.

[0093] In one embodiment, the first reflecting mechanism 400 includes a first reflecting mirror installed on a first side of the supporting mechanism 100 , and the first reflecting mirror is used to reflect an image of the first position of the workpiece to be measured to the first photographing mechanism 200 .

[0094] The second reflecting mechanism 500 includes a second reflecting mirror installed on the second side of the supporting mechanism 100 . The second reflecting mirror is used to reflect the image of the second position of the workpiece to be measured to the second photographing mechanism 300 .

[0095] An acute angle is formed between the mirror surface of the first reflector and the workpiece to be measured, and an acute angle is formed between the mirror surface of the second reflector and the workpiece to be measured.

[0096] Preferably, both the first reflective mechanism 400 and the second reflective mechanism 500 are fully reflective mirrors. In this case, the angle α1 between the mirror surface of the first reflective mechanism 400 and the workpiece to be measured satisfies the formula: α1 = (180° - α0) / 2, where α0 is the angle between the first inclined surface and the workpiece to be measured. The angle β1 between the mirror surface of the second reflective mechanism 500 and the workpiece to be measured satisfies the formula: β1 = (180° - β0) / 2, where β0 is the angle between the second inclined surface and the workpiece to be measured.

[0097] Taking the example of an angle of 45° between the first inclined surface and the workpiece to be measured and an angle of 45° between the second inclined surface and the workpiece to be measured, the first reflecting mechanism 400 and the workpiece to be measured will be set at an angle of 67.5°, and the second reflecting mechanism 500 and the workpiece to be measured will also be set at an angle of 67.5°. As in the principle of mirror reflection, the vertical light reflected by the workpiece to be measured passes through the reflector directly into the target surface of the corresponding camera mechanism, completing the image acquisition.

[0098] In one embodiment, if Figures 1 to 8 As shown, the first camera mechanism 200 and the second camera mechanism 300 both include a camera structure 80 and a fine-tuning structure 90. The fine-tuning structure 90 is mounted on the support mechanism 100, and the camera structure 80 is mounted on the fine-tuning structure 90. The fine-tuning structure 90 is used to fine-tune the camera angle of the camera structure 80. Thus, each camera structure 80 can be adjusted independently to achieve deviation correction and optical path calibration.

[0099] Furthermore, the photographing structure 80 of the first photographing mechanism 200 is used to photograph the image reflected to the first photographing mechanism 200 to obtain an image of the first position of the workpiece to be measured.

[0100] The photographing structure 80 of the second photographing mechanism 300 is used to photograph the image reflected to the second photographing mechanism 300 to obtain an image of the second position of the workpiece to be measured.

[0101] In one embodiment, if Figures 5 to 8 As shown, the fine-tuning structure 90 includes a first adjustment plate 1, a first fine-tuning component 2 and a clamping component 3. The first adjustment plate 1 is installed on the supporting mechanism 100, and the clamping component 3 is placed on the first adjustment plate 1. The clamping component 3 is used to clamp the shooting structure 80.

[0102] The first fine-tuning assembly 2 is mounted on the first adjustment plate 1 and connected to the clamping assembly 3. The first fine-tuning assembly 2 is used to rotate the clamping assembly 3 around the first rotation axis along the first rotation direction, and to make the clamping assembly 3 move linearly along the second direction y.

[0103] The second direction y intersects with the extending direction of the first rotation axis.

[0104] The fine-tuning structure 90 clamps the shooting structure 80 through the clamping component 3. Afterwards, the clamping component 3 can be rotated along the first rotation direction or moved linearly along the second direction y through the first fine-tuning component 2, thereby driving the shooting structure 80 on the clamping component 3 to rotate along the first rotation direction or move linearly along the second direction y to adjust the image taking position of the shooting structure 80 and improve the detection accuracy.

[0105] In one embodiment, if Figure 3 and Figure 4 As shown, the first adjustment plate 1 is provided with a first sliding groove 101 , and the clamping assembly 3 is provided with a first guide member 301 , and the first guide member 301 is slidably placed in the first sliding groove 101 .

[0106] When the clamping assembly 3 rotates along the first rotation direction, the first guide member 301 slides relative to the first sliding groove 101 along the first rotation direction.

[0107] When the clamping assembly 3 moves linearly along the second direction y, the first guide member 301 slides relative to the first sliding groove 101 along the second direction y.

[0108] When the clamping assembly 3 rotates around the first rotation axis or moves along the second direction y, the first guide member 301 of the clamping assembly 3 is slidably placed in the first slide groove 101 of the first adjustment plate 1, so that the first guide member 301 can provide guidance for the rotation of the clamping assembly 3 through the sliding cooperation with the first slide groove 101, thereby preventing the clamping assembly 3 from deflecting.

[0109] In one embodiment, if Figure 4As shown, the first fine-tuning assembly 2 includes a first fine-tuning block 201, a first fastener (not shown) and a second fastener (not shown). The first fine-tuning block 201 is installed on the first adjustment plate 1. The first fine-tuning block 201 is provided with a first fastening hole 2011 and a second fastening hole 2012 at intervals along the third direction a. The first fastener is threadedly connected to the first fastening hole 2011 and abuts against the clamping assembly 3. The second fastener is threadedly connected to the second fastening hole 2012 and abuts against the clamping assembly 3.

[0110] When it is necessary to rotate the clamping assembly 3 about the first rotation axis or move along the second direction y, the first fastener and the second fastener can be rotated. By adjusting the length of the first fastener and the second fastener extending from the first fine-tuning block 201, respectively, the clamping assembly 3 is driven to rotate about the first rotation axis to adjust the image-taking position of the imaging structure 80 and improve detection accuracy. Specifically, when the length of the first fastener extending from the first fine-tuning block 201 is always consistent with the length of the second fastener extending from the first fine-tuning block 201, the clamping assembly 3 can be moved along the second direction y. When the length of the first fastener extending from the first fine-tuning block 201 is inconsistent with the length of the second fastener extending from the first fine-tuning block 201, the clamping assembly 3 can be rotated about the first rotation axis.

[0111] The third direction a intersects the second direction y and the extending direction of the first rotation axis in pairs, so as to ensure that the clamping assembly 3 can rotate around the first rotation axis. In the illustrated embodiment, the third direction a is perpendicular to the second direction y and the first rotation axis.

[0112] In one embodiment, if Figure 2 As shown, the clamping assembly 3 includes a clamping base plate 302 and a plurality of clamping claws 303. The clamping base plate 302 is placed on the first adjustment plate 1. The first guide member 301 is arranged on the clamping base plate 302. The plurality of clamping claws 303 are installed at intervals on the edge of the clamping base plate 302. The plurality of clamping claws 303 cooperate with each other to clamp the shooting structure 80, thereby ensuring that the clamping assembly 3 can drive the shooting structure 80 to rotate around the first rotation axis.

[0113] In a specific embodiment, a plurality of clamping claws 303 are provided on both sides of the clamping base plate 302 to clamp the shooting structure 80. It should be noted that, Figure 2 Only the left side of the clamping base plate 302 (with Figure 2 The clamping claw 303 is located on the left side of the clamping base plate 302 (in the direction shown). Figure 2 The clamping jaw 303 (on the right side in the direction shown) is not shown.

[0114] In one embodiment, if Figures 2 to 3As shown, the fine-tuning structure 90 also includes a second adjustment plate 4, a third adjustment plate 5 and a second fine-tuning component 6. The third adjustment plate 5 is installed on the supporting mechanism 100. The second adjustment plate 4 is connected to the third adjustment plate 5 and rotates along the second rotation direction around the second rotation axis. The second fine-tuning component 6 is installed on the third adjustment plate 5 and connected to the second adjustment plate 4. The second fine-tuning component 6 is used to rotate the second adjustment plate 4 along the second rotation direction.

[0115] The first adjustment plate 1 is mounted on the second adjustment plate 4 .

[0116] The second rotation axis intersects the first rotation axis.

[0117] The second fine-tuning assembly 6 rotates the second adjustment plate 4 about the second rotation axis, driving the first adjustment plate 1, the clamping assembly 3, and the camera assembly 80 to rotate synchronously about the second rotation axis. This adjusts the image capture position of the camera assembly 80 and improves detection accuracy. The coordination of the first fine-tuning assembly 2 and the second fine-tuning assembly 6 allows the camera assembly 80 to rotate about two different rotation axes (the first and second axes), further improving detection accuracy.

[0118] In the illustrated embodiment, the second rotation axis is perpendicular to the first rotation axis, and the second rotation axis is parallel to the second direction y.

[0119] In one embodiment, if Figure 4 As shown, the second fine-tuning assembly 6 includes a second fine-tuning block 601, a third fine-tuning block 602, a third fastener and a fourth fastener. The second fine-tuning block 601 and the third fine-tuning block 602 are installed on the third adjustment plate 5 at intervals along the fourth direction b. The second fine-tuning block 601 is provided with a third fastening hole 6011, and the third fine-tuning block 602 is provided with a fourth fastening hole 6021. The third fastener is threadedly connected to the third fastening hole 6011 and abuts against the second adjustment plate 4. The fourth fastener is threadedly connected to the fourth fastening hole 6021 and abuts against the second adjustment plate 4.

[0120] When the second adjustment plate 4 needs to be rotated around the second rotation axis, the third fastener and the fourth fastener can be rotated. By adjusting the length of the third fastener extending from the second fine-tuning block 601 and the length of the fourth fastener extending from the third fine-tuning block 602, the second adjustment plate 4 is driven to rotate around the second rotation axis to adjust the image taking position of the shooting structure 80 and improve the detection accuracy.

[0121] The fourth direction b intersects the extension direction of the second rotation axis to ensure that the second adjustment plate 4 can rotate around the second rotation axis. In the illustrated embodiment, the fourth direction b is perpendicular to the second rotation axis and parallel to the third direction a and the first direction x described below.

[0122] In one embodiment, the above-mentioned fasteners (the first fastener, the second fastener, the third fastener and the fourth fastener) are fine-tuning bolts, and the fastening holes (the first fastening hole 2011, the second fastening hole 2012, the third fastening hole 6011 and the fourth fastening hole 6021) are threaded holes to achieve threaded connection between the two.

[0123] In one embodiment, if Figure 4 As shown, a positioning groove 501 is provided on one side of the third adjustment plate 5 facing the second adjustment plate 4 , and a positioning hole 401 is provided on the second adjustment plate 4 at a position corresponding to the positioning groove 501 .

[0124] The fine-tuning structure 90 further includes a rotational positioning block 7 , one end of which is inserted into the positioning groove 501 , and the other end of which is inserted into the positioning hole 401 .

[0125] By arranging a rotational positioning block 7 between the second adjustment plate 4 and the third adjustment plate 5, the rotational positioning block 7 is rotatably connected to the second adjustment plate 4 and the third adjustment plate 5, or the rotational positioning block 7 is rotatably connected to one of the second adjustment plate 4 and the third adjustment plate 5, so as to realize the rotational positioning between the second adjustment plate 4 and the third adjustment plate 5, and ensure the rotation of the second adjustment plate 4 around the second rotation axis.

[0126] In one embodiment, if Figure 2 and Figure 4 As shown, the second adjustment plate 4 is further provided with a rotation limiting hole 402 .

[0127] The fine-tuning structure 90 further includes a rotation limiter 8, one end of which is connected to the third adjustment plate 5 and the other end of which is received in the rotation limiter hole 402. When the second adjustment plate 4 rotates in the second rotation direction, the rotation limiter hole 402 can move relative to the rotation limiter 8.

[0128] The rotation limiting hole 402 is a linear or arc-shaped slot extending along the second rotational direction. If the rotation limiting hole 402 is a linear slot, its width should be greater than the maximum cross-sectional width of the rotation limiting member 8 to avoid interfering with the rotation of the second adjustment plate 4. If the rotation limiting hole 402 is an arc-shaped slot, its center is located on the second rotational axis to avoid interfering with the rotation of the second adjustment plate 4.

[0129] By providing the rotation limiting hole 402 and the rotation limiting member 8 , it is possible to provide guidance for the rotation of the second adjustment plate 4 and also limit the rotation angle of the second adjustment plate 4 .

[0130] In one embodiment, if Figure 4As shown, the fine-tuning structure 90 further includes a fourth adjustment plate 9 , which is mounted on the supporting mechanism 100 , and the third adjustment plate 5 is slidably connected to the fourth adjustment plate 9 along the fifth direction z.

[0131] The fifth direction z intersects with the extension direction of the second rotation axis. In the illustrated embodiment, the fifth direction z is perpendicular to the extension direction of the second rotation axis, and the fifth direction z is perpendicular to the second direction y.

[0132] By sliding the third adjustment plate 5 along the fifth direction z to connect to the fourth adjustment plate 9, the position of the third adjustment plate 5 can be adjusted along the fifth direction z, thereby adjusting the positions of the second adjustment plate 4, the first adjustment plate 1, the clamping assembly 3 and the shooting structure 80 in the fifth direction z.

[0133] In one embodiment, if Figure 4 As shown, a second slide groove 901 extending along the fifth direction z is provided on the side of the fourth adjustment plate 9 facing the third adjustment plate 5, and a second guide member 502 is provided on the side of the third adjustment plate 5 facing the fourth adjustment plate 9. The second guide member 502 is slidingly connected to the second slide groove 901, so that the third adjustment plate 5 can be slidably connected to the fourth adjustment plate 9 along the fifth direction z.

[0134] A first sliding positioning block 902 and a second sliding positioning block 903 are also provided on the side of the fourth adjustment plate 9 facing the third adjustment plate 5. The first sliding positioning block 902 and the second sliding positioning block 903 are respectively arranged at the two ends of the second slide groove 901 along the fifth direction z. The first sliding positioning block 902 and the second sliding positioning block 903 are used to limit the sliding of the second guide member 502 to limit the maximum displacement of the third adjustment plate 5.

[0135] In one embodiment, if Figure 2 and Figure 4 As shown, the third adjustment plate 5 is further provided with a sliding limiting hole 503 .

[0136] The fine-tuning structure 90 further includes a sliding stopper 10, one end of which is connected to the fourth adjustment plate 9 and the other end of which is received in the sliding stopper hole 503. When the third adjustment plate 5 slides relative to the fourth adjustment plate 9, the sliding stopper hole 503 can move relative to the sliding stopper 10.

[0137] The sliding limiting hole 503 is a straight long hole extending along the fifth direction z.

[0138] By providing the sliding limiting hole 503 and the sliding limiting member 10 , it is possible to provide guidance for the sliding of the third adjustment plate 5 and also limit the sliding distance of the third adjustment plate 5 .

[0139] In one embodiment, if Figure 1 and Figure 4As shown, the support mechanism 100 includes a support member 11 , and the fourth adjustment plate 9 is slidably connected to the support member 11 along the first direction x.

[0140] The first direction x intersects the fifth direction z and the extending direction of the second rotation axis. In the illustrated embodiment, the first direction x is perpendicular to the fifth direction z and the second rotation axis, the first direction x is perpendicular to the fifth direction z and the second direction y, and the first direction x is parallel to the fourth direction b.

[0141] By making the fourth adjustment plate 9 slidably connected to the support member 11 along the first direction x, the position of the fourth adjustment plate 9 can be adjusted along the first direction x, thereby adjusting the positions of the third adjustment plate 5, the second adjustment plate 4, the first adjustment plate 1, the clamping assembly 3 and the shooting structure 80 in the first direction x.

[0142] In one embodiment, if Figure 1 and Figure 4 As shown, the support member 11 is provided with a third sliding groove 1101 extending along the first direction x, and the fourth adjustment plate 9 is provided with a third guide member 904 on the side facing the support member 11. The third guide member 904 is slidingly connected to the third sliding groove 1101, so that the fourth adjustment plate 9 can be slidably connected to the support member 11 along the first direction x.

[0143] In one embodiment, the detection device further includes a lifting mechanism 600 , the support mechanism 100 is connected to the lifting mechanism 600 , and the lifting mechanism 600 is used to drive the support mechanism 100 to move along the sixth direction.

[0144] The sixth direction intersects the first direction x and the fifth direction z. Specifically, the sixth direction may be perpendicular to the first direction x, and the sixth direction is not perpendicular to the fifth direction z.

[0145] The lifting mechanism 600 drives the supporting mechanism 100 to move along the sixth direction, so that the shooting structure 80 can be moved closer to or farther away from the testing platform, and further closer to or farther away from the workpiece to be tested, and can also adapt to workpieces to be tested of different thicknesses.

[0146] In one embodiment, if Figure 2 、 Figures 5 to 8 As shown, the shooting structure 80 includes a camera 12, a first heat sink 13, a lens 14 and a second heat sink 15. The clamping assembly 3 is used to clamp the camera 12. The lens 14 and the first heat sink 13 are installed on the camera 12. The second heat sink 15 is installed on the lens 14. The first heat sink 13 is used to dissipate heat for the camera 12, and the second heat sink 15 is used to dissipate heat for the lens 14 to prevent temperature drift problems.

[0147] The first heat sink 13 and the second heat sink 15 can both adopt a heat sink and air cooling or other media to dissipate heat, thereby achieving temperature stability and image stability of the imaging system and reducing the risk of image distortion and blur.

[0148] In one embodiment, the axis of the lens 14 of the first camera mechanism 200 intersects with the axis of the lens 14 of the second camera mechanism 300, so that the center line of the field of view of the first camera mechanism 200 can intersect with the center line of the field of view of the second camera mechanism 300.

[0149] In one embodiment, if Figures 1 to 4 As shown, the detection device further includes a light source mechanism 700 , which is mounted on the support mechanism 100 . The light source mechanism 700 is used to provide light toward the first position and the second position of the workpiece to be detected, so as to improve detection accuracy.

[0150] The fine-tuning structure 90 of the detection device provided in this embodiment of the utility model enables the camera structure 80 to rotate about the first rotation axis or move in the second direction y through the coordinated movement of the first adjustment plate 1, the first fine-tuning assembly 2, and the clamping assembly 3. The camera structure 80 can rotate about the second rotation axis through the coordinated movement of the second adjustment plate 4, the third adjustment plate 5, and the second fine-tuning assembly 6. The camera structure 80 can move in the fifth direction z through the coordinated movement of the third adjustment plate 5 and the fourth adjustment plate 9. The camera structure 80 can move in the first direction x through the coordinated movement of the fourth adjustment plate 9 and the support member 11.

[0151] Therefore, the shooting structure 80 of the detection device can include five degrees of freedom of fine adjustment, namely the second direction y, the fifth direction z, the first direction x, the first rotation direction around the first rotation axis, and the second rotation direction around the second rotation axis.

[0152] This detection device significantly reduces the difficulty and time required to adjust the camera assembly 80, lowering equipment costs. It also improves the stability of the camera assembly 80, reduces adjustment and material preparation issues associated with equipment upgrades, and improves product compatibility. Furthermore, this detection device enables the in-line stitching of multiple camera assemblies 80, achieving a wider image capture width, taking into account image overlap, and achieving a wide range of resolution.

[0153] The PCB testing equipment provided by the embodiment of the present invention includes a workbench and the testing device provided by the above embodiment. The support mechanism 100 is installed on the workbench, and the workbench is provided with a carrier for placing a workpiece to be tested.

[0154] In the PCB inspection equipment provided by the embodiment of the present invention, a first camera mechanism 200 and a second camera mechanism 300 are respectively arranged on opposite sides of a support mechanism 100, and a first reflection mechanism 400 is used to reflect an image of a first position of the workpiece to be measured to the first camera mechanism 200, and a second reflection mechanism 500 is used to reflect an image of a second position of the workpiece to be measured to the second camera mechanism 300. The first camera mechanism 200 and the second camera mechanism 300 are used to photograph different positions to improve the resolution of AOI visual inspection. By piecing together the images taken by each camera mechanism, a larger-scale synchronous image acquisition inspection is completed, thereby improving the speed and accuracy of AOI inspection.

[0155] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A detection device, characterized in that: The device comprises a supporting mechanism, a first photographing mechanism, a second photographing mechanism, a first reflecting mechanism, and a second reflecting mechanism, wherein the supporting mechanism has a first side and a second side opposite to each other, the first photographing mechanism is disposed on the first side of the supporting mechanism, and the second photographing mechanism is disposed on the second side of the supporting mechanism; The center line of the field of view of the first camera mechanism intersects the center line of the field of view of the second camera mechanism; The first reflecting mechanism is used to reflect the image of the first position of the workpiece to be measured to the first photographing mechanism, and the first photographing mechanism takes the image; The second reflecting mechanism is used to reflect the image of the second position of the workpiece to be measured to the second photographing mechanism, so that the second photographing mechanism takes the image; The image reflected by the first reflecting mechanism and the image reflected by the second reflecting mechanism are arranged linearly on the workpiece to be measured.

2. The detection device according to claim 1, characterized in that The workpiece to be measured is provided with a plurality of first positions and a plurality of second positions arranged alternately; There are multiple first photographing mechanisms, multiple second photographing mechanisms, multiple first reflecting mechanisms, and multiple second reflecting mechanisms. A plurality of the first photographing mechanisms are arranged at intervals along a first direction on the first side of the support mechanism, and a plurality of the second photographing mechanisms are arranged at intervals along the first direction on the second side of the support mechanism; along the first direction, the plurality of the first photographing mechanisms and the plurality of the second photographing mechanisms are arranged alternately and staggered; The plurality of first reflecting mechanisms are provided in a one-to-one correspondence with the plurality of first photographing mechanisms, and the plurality of first reflecting mechanisms are provided in a one-to-one correspondence with the plurality of first positions. The first reflecting mechanisms are configured to reflect images corresponding to the first positions to the corresponding first photographing mechanisms, so that the images are photographed by the corresponding first photographing mechanisms. Multiple second reflecting mechanisms are arranged in a one-to-one correspondence with multiple second photographing mechanisms, and multiple second reflecting mechanisms are arranged in a one-to-one correspondence with multiple second positions. The second reflecting mechanism is used to reflect the image corresponding to the second position to the corresponding second photographing mechanism, which is photographed by the second photographing mechanism.

3. The detection device according to claim 2, characterized in that The first photographing mechanism and the second photographing mechanism each include a photographing structure and a fine-tuning structure, wherein the fine-tuning structure is mounted on the supporting mechanism, and the photographing structure is mounted on the fine-tuning structure, and the fine-tuning structure is used to adjust the photographing angle of the photographing structure; The photographing structure of the first photographing mechanism is used to photograph the image reflected to the first photographing mechanism; The photographing structure of the second photographing mechanism is used to photograph the image reflected to the second photographing mechanism.

4. The detection device according to claim 3, characterized in that The fine-tuning structure includes a first adjustment plate, a first fine-tuning component, and a clamping component. The first adjustment plate is mounted on the support mechanism. The clamping component is placed on the first adjustment plate. The clamping component is used to clamp the shooting structure. The first fine-tuning assembly is mounted on the first adjustment plate and connected to the clamping assembly, and the first fine-tuning assembly is used to rotate the clamping assembly around a first rotation axis in a first rotation direction, and to make the clamping assembly move linearly in a second direction; An extending direction of the first rotation axis intersects with the second direction.

5. The detection device according to claim 4, characterized in that The first adjustment plate is provided with a first sliding groove, and the clamping assembly is provided with a first guide member, and the first guide member is slidably placed in the first sliding groove; When the clamping assembly rotates along the first rotation direction, the first guide member slides relative to the first sliding groove along the first rotation direction; When the clamping assembly moves linearly along the second direction, the first guide member slides relative to the first sliding groove along the second direction.

6. The detection device according to claim 4, characterized in that The first fine-tuning assembly includes a first fine-tuning block, a first fastener, and a second fastener. The first fine-tuning block is mounted on the first adjustment plate. The first fine-tuning block is provided with a first fastening hole and a second fastening hole spaced apart along the third direction. The first fastener is threadedly connected to the first fastening hole and abuts against the clamping assembly. The second fastener is threadedly connected to the second fastening hole and abuts against the clamping assembly. The extending direction of the first rotation axis, the third direction and the second direction intersect with each other.

7. The detection device according to claim 5, characterized in that The clamping assembly includes a clamping base plate and a plurality of clamping claws. The clamping base plate is placed on the first adjustment plate. The first guide member is arranged on the clamping base plate. The plurality of clamping claws are installed at intervals on the edge of the clamping base plate. The plurality of clamping claws cooperate with each other to clamp the shooting structure.

8. The detection device according to claim 4, characterized in that The fine-tuning structure further includes a second adjustment plate, a third adjustment plate, and a second fine-tuning assembly, wherein the third adjustment plate is mounted on the support mechanism, the second adjustment plate is rotatably connected to the third adjustment plate about a second rotation axis along a second rotation direction, the second fine-tuning assembly is mounted on the third adjustment plate and connected to the second adjustment plate, and the second fine-tuning assembly is used to rotate the second adjustment plate along the second rotation direction; The first adjustment plate is mounted on the second adjustment plate; The second rotation axis intersects the first rotation axis.

9. The detection device according to claim 8, characterized in that The second fine-tuning assembly includes a second fine-tuning block, a third fine-tuning block, a third fastener, and a fourth fastener. The second fine-tuning block and the third fine-tuning block are installed on the third adjustment plate at intervals along a fourth direction. The second fine-tuning block is provided with a third fastening hole, and the third fine-tuning block is provided with a fourth fastening hole. The third fastener is threadedly connected to the third fastening hole and abuts against the second adjustment plate. The fourth fastener is threadedly connected to the fourth fastening hole and abuts against the second adjustment plate. An extending direction of the second rotation axis intersects with the fourth direction; A positioning groove is provided on one side of the third adjustment plate facing the second adjustment plate, and a positioning hole is provided on the second adjustment plate at a position corresponding to the positioning groove; The fine-tuning structure further includes a rotation positioning block, one end of which is inserted into the positioning groove, and the other end of which is inserted into the positioning hole; The second adjustment plate is further provided with a rotation limiting hole; The fine-tuning structure further includes a rotation limiter, one end of which is connected to the third adjustment plate, and the other end of which is accommodated in the rotation limiter hole; when the second adjustment plate rotates along the second rotation direction, the rotation limiter hole can move relative to the rotation limiter; The fine-tuning structure further includes a fourth adjustment plate, the fourth adjustment plate is mounted on the support mechanism, and the third adjustment plate is slidably connected to the fourth adjustment plate along a fifth direction; An extending direction of the second rotation axis intersects with the fifth direction; A second sliding groove extending along the fifth direction is provided on a side of the fourth adjustment plate facing the third adjustment plate, and a second guide member is provided on a side of the third adjustment plate facing the fourth adjustment plate, wherein the second guide member is slidably connected to the second sliding groove; A first sliding positioning block and a second sliding positioning block are further provided on a side of the fourth adjustment plate facing the third adjustment plate. The first sliding positioning block and the second sliding positioning block are respectively provided at two ends of the second sliding groove along the fifth direction. The first sliding positioning block and the second sliding positioning block are used to limit the sliding of the second guide member. The third adjustment plate is further provided with a sliding limiting hole; The fine-tuning structure also includes a sliding limiter, one end of which is connected to the fourth adjustment plate, and the other end of which is accommodated in the sliding limiter hole; when the third adjustment plate slides relative to the fourth adjustment plate, the sliding limiter hole can move relative to the sliding limiter.

10. The detection device according to claim 9, characterized in that: The supporting mechanism includes a supporting member, and the fourth adjustment plate is slidably connected to the supporting member along the first direction; The extension direction of the second rotation axis, the first direction, and the fifth direction intersect each other; The support member is provided with a third sliding groove extending along the first direction, and the fourth adjustment plate is provided with a third guide member on a side facing the support member, and the third guide member is slidably connected to the third sliding groove; The detection device further includes a lifting mechanism, the supporting mechanism is connected to the lifting mechanism, and the lifting mechanism is used to drive the supporting mechanism to move along a sixth direction; The sixth direction, the first direction, and the fifth direction intersect with each other.

11. The detection device according to claim 4, characterized in that: The shooting structure includes a camera, a first heat sink, a lens, and a second heat sink, the clamping assembly is used to clamp the camera, the lens and the first heat sink are mounted on the camera, the second heat sink is mounted on the lens, the first heat sink is used to dissipate heat for the camera, and the second heat sink is used to dissipate heat for the lens; The axis of the lens of the first camera mechanism intersects the axis of the lens of the second camera mechanism; The first reflecting mechanism includes a first reflecting mirror, which is installed on the first side of the supporting mechanism, and is used to reflect the image of the first position of the workpiece to be measured to the first photographing mechanism; The second reflecting mechanism includes a second reflecting mirror, which is installed on the second side of the supporting mechanism, and is used to reflect the image of the second position of the workpiece to be measured to the second photographing mechanism; An acute angle is formed between the mirror surface of the first reflector and the workpiece to be measured; an acute angle is formed between the mirror surface of the second reflector and the workpiece to be measured; The detection device further includes a light source mechanism, which is mounted on the support mechanism and is used to provide light toward the first position and the second position of the workpiece to be measured.

12. A PCB detection device, characterized in that: It comprises a workbench and the detection device according to any one of claims 1 to 11, wherein the supporting mechanism is installed on the workbench, and the workbench is provided with a carrier for placing the workpiece to be tested.

Images