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CN-224231596-U - Equipment for double-sided detection of PCB defect positioning

CN224231596UCN 224231596 UCN224231596 UCN 224231596UCN-224231596-U

Abstract

The utility model discloses a device for detecting the two sides of a PCB defect positioning. The device comprises a workbench, a clamping plate, an infrared imaging device and a visible light imaging device. The workbench is provided with a mounting part, the clamping plate is used for receiving the PCB and is assembled on the mounting part, the infrared imaging device is positioned on one side of the clamping plate and comprises a first driving mechanism and an infrared camera arranged on the first driving mechanism, the first driving mechanism is used for driving the infrared camera to move, the visible light imaging device is positioned on the other side of the clamping plate and comprises a second driving mechanism and a visible light camera arranged on the second driving mechanism, and the second driving camera is used for driving the visible light camera to move. Through arranging the infrared imaging device and the visible light imaging device on two sides of the clamping plate respectively and moving the clamping plate by matching with the driving mechanism, the structure can detect the front side and the back side of the PCB simultaneously, the flexibility and the reliability of detection are improved, and the equipment maintenance cost is reduced.

Inventors

  • SHEN JINHUI
  • LIN HAOBIN
  • LIU XIANGAN

Assignees

  • 安徽凌光红外科技有限公司

Dates

Publication Date
20260512
Application Date
20250403

Claims (10)

  1. 1. An apparatus for double-sided detection of a defect location of a PCB, the apparatus comprising: a workbench (1) provided with an installation part; The clamping plate (2) is used for receiving the PCB and is assembled on the mounting part; The infrared imaging device is positioned on one side of the clamping plate (2) and comprises a first driving mechanism (3) and an infrared camera (4) arranged on the first driving mechanism (3), wherein the first driving mechanism (3) is used for driving the infrared camera (4) to move; the visible light imaging device is positioned on the other side of the clamping plate (2) and comprises a second driving mechanism (5) and a visible light camera (6) arranged on the second driving mechanism (5), wherein the second driving mechanism (5) is used for driving the visible light camera (6) to move; the infrared camera (4) and the visible light camera (6) are matched to detect the front side and the back side of the same position on the PCB at the same time.
  2. 2. The apparatus for double-sided inspection of the location of defects of PCBs according to claim 1, wherein said mounting portion comprises a rail provided to said table (1), and said clamping plate (2) is mounted to said rail and is movable along said rail.
  3. 3. The apparatus for double-sided inspection of PCB defect localization as set forth in claim 1 wherein the first driving mechanism (3) comprises a first driving assembly, a second driving assembly and a third driving assembly, the first driving assembly is mounted on the table (1), the second driving assembly is mounted on the first driving assembly, the third driving assembly is mounted on the second driving assembly, the infrared camera (4) is mounted on the third driving assembly, wherein one of the first driving assembly, the second driving assembly and the third driving assembly is used for driving the infrared camera (4) to move along an X-axis direction, the other of the first driving assembly, the second driving assembly and the third driving assembly is used for driving the infrared camera (4) to move along a Y-axis direction, and the last of the first driving assembly, the second driving assembly and the third driving assembly is used for driving the infrared camera (4) to move along a Z-axis direction.
  4. 4. The device for positioning and double-sided detecting of the defects of the PCB according to claim 3, wherein the first driving assembly comprises a first driving piece, a first driving track and a first sliding block, the first driving track is fixed on the workbench (1) and extends along the X-axis direction, the first sliding block is slidably mounted on the first driving track and fixedly connected with the second driving assembly, and the first driving piece is in driving connection with the first sliding block so as to drive the first sliding block to move along the X-axis direction.
  5. 5. The apparatus for double-sided inspection of PCB defect positioning of claim 3, wherein the first driving assembly comprises a second driving member, a second driving rail and a second slider, wherein the second driving rail is fixed on the first driving assembly and extends along the Y-axis direction, the second slider is slidably mounted on the second driving rail and fixedly connected with the second driving assembly, and the second driving member is in driving connection with the second slider to drive the second slider to move along the Y-axis direction.
  6. 6. The apparatus for double-sided detection of PCB defect positioning as set forth in claim 3 wherein the first driving assembly comprises a third driving member, a third driving rail and a third slider, wherein the third driving rail is fixed to the second driving assembly and extends in the Z-axis direction, the third slider is slidably mounted on the third driving rail and fixedly connected with the infrared camera (4), and the third driving member is in driving connection with the third slider to drive the third slider to move in the Z-axis direction.
  7. 7. A device for double-sided inspection of a PCB defect localization as claimed in claim 3, wherein the second driving mechanism (5) comprises a fourth driving assembly, a fifth driving assembly and a sixth driving assembly, the fourth driving assembly is mounted on the table (1), the fifth driving assembly is mounted on the fourth driving assembly, the sixth driving assembly is mounted on the fifth driving assembly, the visible light camera (6) is mounted on the sixth driving assembly, wherein one of the fourth driving assembly, the fifth driving assembly and the sixth driving assembly is used for driving the visible light camera (6) to move along the X-axis direction, the other of the fourth driving assembly, the fifth driving assembly and the sixth driving assembly is used for driving the visible light camera (6) to move along the Y-axis direction, and the last of the fourth driving assembly, the fifth driving assembly and the sixth driving assembly is used for driving the visible light camera (6) to move along the Z-axis direction.
  8. 8. The device for positioning and double-sided detection of PCB defects according to claim 7, wherein the second driving assembly comprises a fourth driving piece, a fourth driving track and a fourth sliding block, the fourth driving track is fixed on the workbench (1) and extends along the X-axis direction, the fourth sliding block is slidably mounted on the fourth driving track and fixedly connected with the fourth driving assembly, and the fourth driving piece is in driving connection with the fourth sliding block so as to drive the fourth sliding block to move along the X-axis direction.
  9. 9. The apparatus for double-sided inspection of PCB defect positioning of claim 7, wherein the second driving assembly comprises a fifth driving member, a fifth driving rail and a fifth slider, wherein the fifth driving rail is fixed to the fourth driving assembly and extends along the Y-axis direction, the fifth slider is slidably mounted on the fifth driving rail and fixedly connected with the fifth driving assembly, and the fifth driving member is in driving connection with the fifth slider to drive the fifth slider to move along the Y-axis direction.
  10. 10. The device for positioning and double-sided detection of PCB defects according to claim 7, wherein the second driving assembly comprises a sixth driving piece, a sixth driving track and a sixth sliding block, the sixth driving track is fixed on the fifth driving assembly and extends along the Z-axis direction, the sixth sliding block is slidably mounted on the sixth driving track and fixedly connected with the visible light camera (6), and the sixth driving piece is in driving connection with the sixth sliding block so as to drive the sixth sliding block to move along the Z-axis direction.

Description

Equipment for double-sided detection of PCB defect positioning Technical Field The utility model belongs to the technical field of electrical failure analysis of chips, and particularly relates to equipment for positioning double-sided detection of PCB defects. Background The PCB is one of the core components of an electronic product, and its quality directly affects the performance and stability of the electronic product. Defects in the production process, such as open circuits, short circuits, line gaps, hole breaks, copper exposure and the like, can be timely found and repaired through PCB detection, and the defects not only affect the appearance, but also are more likely to cause the performance degradation and even failure of the circuit board. Thus, PCB inspection is a key step in ensuring the quality and stability of electronic products. Along with the continuous improvement of the requirements of application scenes, the complexity of the PCB is greatly improved, the number of layers of the PCB is increased to tens of layers from the original layers, and the components of the patch are developed from single side to double side. The increase in complexity also results in a higher failure rate of the PCB and increased defects in the production process. Therefore, the PCB detection is carried out in the production process, unqualified products can be found in time, and the unqualified products are prevented from entering the subsequent process. The number of reworks and scrapping is reduced, so that the production efficiency is improved and the production cost is reduced. By detecting the feedback information, the production flow can be optimized, such as adjusting process parameters, improving equipment performance, and the like. This helps to improve overall production efficiency and product quality. At present, one of the methods for detecting the defects of the PCB is to determine the positions of the defects through an infrared microscope, and after the phase-locked infrared imaging function is carried out, the positions of the defects of the PCB, such as weak short-circuit points, can be accurately positioned. In order to improve the detection efficiency, the user also needs to detect the two sides of the PCB simultaneously, so that the existing on-sale devices adopt a combination of a normal mode and an inverted mode to detect. The infrared cameras are distributed up and down, and the PCB passes through the middle of the infrared cameras, so that double-sided detection can be performed. However, this device has several drawbacks, such as the lens of the inverted portion is upward, the imaging performance is easily affected after dust is deposited, and if foreign matters fall on the PCB, the lens is easily smashed, the imaging picture of the camera of the inverted portion is difficult to adjust because of being hidden under the machine, the definition of the adjusting picture is inconvenient, and the table top needs to be provided with a large hole to adapt to the moving area of the inverted portion, so that the size of the PCB is limited, and the PCB board which is too small cannot be mounted in the center of the platform and is easily dropped. Disclosure of Invention The present utility model is directed to a device for locating double-sided detection of defects in a PCB, which solves at least some of the above-mentioned problems. A first aspect of an embodiment of the present utility model provides an apparatus for locating double-sided inspection of a PCB defect, the apparatus comprising: A workbench provided with an installation part; The clamping plate is used for receiving the PCB and is assembled on the mounting part; The infrared imaging device is positioned at one side of the clamping plate and comprises a first driving mechanism and an infrared camera arranged on the first driving mechanism, wherein the first driving mechanism is used for driving the infrared camera to move; The visible light imaging device is positioned at the other side of the clamping plate and comprises a second driving mechanism and a visible light camera arranged on the second driving mechanism, wherein the second driving mechanism is used for driving the visible light camera to move; The infrared camera is matched with the visible light camera to detect the front and back surfaces of the same position on the PCB. Optionally, the mounting portion includes a track provided on the workbench, and the clamping plate is mounted on the track and is movable along the track. Optionally, the first driving mechanism comprises a first driving component, a second driving component and a third driving component, the first driving component is installed on the workbench, the second driving component is installed on the first driving component, the third driving component is installed on the second driving component, the infrared camera is installed on the third driving component, one of the first driving component, the second d