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CN-121988548-A - Material surface detecting system based on vision

CN121988548ACN 121988548 ACN121988548 ACN 121988548ACN-121988548-A

Abstract

The invention discloses a vision-based material surface detection system which comprises a carrier flow channel, and a side surface, a bottom surface, a top surface detection station and a sorting station which are sequentially arranged. The side detection module moves the material into a through hole of a detection table embedded with the prism group by using the first grabbing component, the peripheral side image is acquired at one time by using the first camera shooting component, the bottom detection module moves out of the material by using the second grabbing component, the bottom is exposed to the view field of the second camera shooting component, the top detection module drives the third camera shooting component to move above the carrier to acquire a top image, and the sorting module sorts the material according to the detection result. The system integrates all-round detection in the same flow channel, the side detection does not need to rotate materials, the bottom detection does not need to turn over the whole tray, the structure is compact, and the detection efficiency and the product quality control level are obviously improved.

Inventors

  • HUANG AIKE
  • PAN YONGPENG
  • Zou Qinian
  • LI JIANPING
  • MEI CHENGLIN
  • TU ZHONGYUAN
  • LI XIAOFENG

Assignees

  • 深圳市标王工业设备有限公司

Dates

Publication Date
20260508
Application Date
20260408

Claims (14)

  1. 1. A vision-based material surface inspection system, comprising: The carrier runner is used for receiving a carrier filled with a material to be detected and conveying the carrier along a preset path, and a side detection station, a bottom detection station, a top detection station and a sorting station are sequentially arranged on the path of the carrier runner; The side detection module is arranged corresponding to the side detection station and comprises a detection table, a first camera shooting assembly, a first transfer device and a first grabbing assembly, wherein the first camera shooting assembly is positioned below the detection table, and the first grabbing assembly is in sliding connection with the first transfer device; the first grabbing component is configured to reciprocate between the carrier runner and the detection platform so as to grab and place materials on the carrier runner into the through hole of the detection platform; The bottom surface detection module is arranged corresponding to the bottom surface detection station and comprises a second camera shooting assembly, a second transfer device and a second grabbing assembly which is in sliding connection with the second transfer device, wherein the second transfer device is used for driving the second grabbing assembly to move materials out of the carrier and expose the bottom surface of the materials in a view field of the second camera shooting assembly; The top surface detection module is arranged corresponding to the top surface detection station and comprises a third transfer device and a third camera shooting assembly which is in sliding connection with the third transfer device, and the third transfer device is used for driving the third camera shooting assembly to move to the upper part of the carrier so that the third camera shooting assembly can acquire an image of the top surface of a material in the carrier; and the sorting module is arranged corresponding to the sorting station and is configured to sort the materials in the carrier according to the detection results of the side detection module, the bottom detection module and the top detection module.
  2. 2. The material surface detection system according to claim 1, wherein the carrier flow channel comprises a frame extending along a material conveying direction, a transfer trolley is arranged in the frame and configured to move in the frame to drive the carrier to circulate among stations, the transfer trolley comprises a transfer device and a vehicle body arranged on the transfer device, a first supporting plate for carrying the carrier and clamping jaws arranged at two ends of the first supporting plate are arranged on the vehicle body, and a first telescopic driving piece for driving the clamping jaws to open and close is further arranged on the vehicle body to fix or release the carrier.
  3. 3. The material surface detection system of claim 2, wherein a loading station is provided at a start end of the carrier flow channel; the feeding station is characterized in that first supporting blocks are pivotally connected to two sides of the frame, a first jacking table is arranged in the frame, and a space for the transfer trolley to shuttle is formed in the first jacking table; the first supporting block is provided with a closed state which extends to the inner side of the frame to support the carrier and an open state which is separated from the inner space of the frame to release the carrier; The first jacking platform is configured to lift the carriers on the first supporting blocks through lifting motion, and the lowest carriers are separated and placed on the transfer trolley in cooperation with opening and closing actions of the first supporting blocks.
  4. 4. The material surface detection system of claim 3, wherein the loading station is further provided with a power mechanism for driving the first supporting block to turn over, and the power mechanism comprises a second telescopic driving piece, a push plate, a connecting block and a connecting shaft; the output end of the second telescopic driving piece is connected with the push plate, the push plate is pivotally connected with one end of the connecting block, and the other end of the connecting block is fixedly connected with the connecting shaft; The connecting block is provided with a long and narrow through groove, and is fixed on the frame through a pin shaft penetrating through the through groove, so that when the connecting block receives the thrust of the push plate, the connecting block can swing relative to the pin shaft, and further the connecting block rotates around the axis of the connecting shaft.
  5. 5. The material surface detection system of claim 2, wherein a blanking station is provided at a terminal end of the carrier flow path; The two sides of the frame are pivotally connected with second supporting blocks, and the second supporting blocks are in a closed state of extending to the inner side of the frame to support the carrier and an open state of separating from the inner space of the frame to release the carrier; A second jacking table is arranged in the rack, and a space for the transfer trolley to shuttle is arranged in the second jacking table; the second jacking platform is configured to jack up the carrier on the transfer trolley upwards through lifting motion so as to place the carrier on the second supporting block.
  6. 6. The material surface detection system according to claim 5, wherein the blanking station is provided with a mounting groove on the frame, the second supporting block is located in the mounting groove, the second supporting block comprises a connecting portion and a supporting portion, the connecting portion is pivotally connected with the mounting groove through a pivot shaft arranged on the side wall of the mounting groove, so that the supporting portion can perform overturning movement up and down, and an elastic piece is further arranged between the supporting portion and the side wall of the mounting groove and used for providing elastic restoring force for the second supporting block, wherein the elastic restoring force is constantly in a closed state.
  7. 7. The material surface detection system of claim 1, wherein the sorting module comprises a fourth transfer device, a fourth grasping assembly in sliding connection with the fourth transfer device, and a buffer platform disposed beside the sorting station; The fourth transfer device is configured to drive the fourth grabbing component to move between the carrier and the buffer platform so as to transfer abnormal materials from the carrier in the sorting station to the buffer carrier on the buffer platform, the buffer platform is further provided with a feeding carrier provided with good products, and the fourth transfer device is further configured to drive the fourth grabbing component to grab good products from the feeding carrier and transfer the good products to empty spaces left after the abnormal materials are removed from the carrier in the sorting station.
  8. 8. The material surface detection system of claim 7, wherein, The carrier flow channel is also provided with a waiting station positioned behind the sorting station, and the detection system also comprises a carrier carrying device arranged corresponding to the waiting station; The carrier carrying device comprises a fifth transferring device and a fifth grabbing component connected with the fifth transferring device; The buffer platform comprises a sixth transfer device and a second supporting plate, the second supporting plate is in sliding connection with the sixth transfer device and is used for placing the buffer carrier and the material supplementing carrier, and the sixth transfer device is configured to drive the second supporting plate to move between the sorting station and the waiting station; The fifth transfer device is configured to drive the fifth grabbing component to transfer the carriers with all the materials in the waiting station being good products to the second supporting plate to serve as the material supplementing carrier.
  9. 9. The material surface detection system of claim 1, further comprising a taping device interfacing with the sorting station, the taping device for loading good materials into a carrier tape; the braiding device comprises a support panel, wherein a carrier tape flow channel for conveying a carrier tape is arranged on the support panel, one end of the carrier tape flow channel is a feeding station, and the other end of the carrier tape flow channel is a receiving station; The material feeding device comprises a material feeding station with a carrier flow channel, a material receiving station, a seventh transferring device, a seventh grabbing component and a seventh grabbing component, wherein the material feeding station of the carrier flow channel is in butt joint with the sorting station of the carrier flow channel, the seventh transferring device and the seventh grabbing component are correspondingly arranged on the sorting station and the material receiving station, and the seventh transferring device is in sliding connection with the seventh transferring device and is configured to drive the seventh grabbing component to transfer materials which are detected as good products and are positioned in a carrier of the sorting station into a carrier of the material feeding station; The braiding device further comprises a feeding mechanism arranged below the support panel, a film feeding mechanism arranged above the support panel, a hot pressing mechanism arranged on the carrier tape flow channel and positioned between the feeding station and the receiving station, and a winding mechanism arranged at the receiving station; the feeding mechanism is used for providing a carrier tape for the carrier tape flow channel; The film supply mechanism is used for covering a cover film on the carrier tape; the hot-pressing mechanism is used for hot-melting the cover film and the carrier tape together; and the winding mechanism is used for winding the material belt subjected to hot pressing into a roll.
  10. 10. The material surface detection system according to claim 9, wherein the braiding device is arranged on a fixed carrier through a bracket, two carrier flow passages are arranged on the support panel in parallel, and a group of the feeding mechanism, the film feeding mechanism, the hot pressing mechanism and the winding mechanism are respectively arranged for each carrier flow passage; the support with fixed carrier sliding connection, still be provided with on the fixed carrier with the driver of leg joint, the driver is used for the drive the support is along predetermineeing the orbit and remove, so that two the carrier band runner can alternate with select separately the station butt joint.
  11. 11. The material surface detection system according to claim 1, wherein the first grabbing assembly comprises two grabbing units which are arranged side by side along a first axial direction, namely a first unit and a second unit, the first unit is fixedly connected with the first transferring device, the second unit is connected with the first unit through a first axial adjusting mechanism, and the first axial adjusting mechanism controls the second unit to move along the first axial direction so as to adjust the distance between the first unit and the second unit; Any grabbing unit comprises a supporting frame, a second axial adjusting mechanism arranged on the supporting frame, and a first grab hand, a second grab hand and a third grab hand which are arranged along a second axial direction, wherein the second axial direction is perpendicular to the first axial direction; The second gripper is fixedly installed on the supporting frame, the first gripper and the third gripper are respectively located on two sides of the second gripper and are in sliding connection with the supporting frame, and the second axial adjusting mechanism is configured to drive the first gripper and the third gripper to synchronously approach or separate from the second gripper.
  12. 12. The material surface detection system of claim 11, wherein the second axial adjustment mechanism comprises a bi-directional screw, the first and third handles being drivingly connected to two movable nuts on the bi-directional screw by first and second links, respectively; The support frame is provided with a first sliding rail and a second sliding rail which extend along the second axis, the first handle is in sliding connection with the first sliding rail, and the third handle is in sliding connection with the second sliding rail.
  13. 13. The material surface detection system of claim 11, wherein the first axial adjustment mechanism comprises a fixed seat, a movable seat slidably coupled to the fixed seat, and a drive assembly; the movable seat is connected with the support frame of the second unit, and the fixed seat is connected with the support frame of the first unit; The driving assembly is configured to drive the movable seat to drive the supporting frame to reciprocate along the first axial direction relative to the fixed seat, and comprises a driving motor and a unidirectional screw, wherein the driving motor is in transmission connection with the unidirectional screw through a belt, and a nut on the unidirectional screw is in transmission connection with the movable seat through a connecting piece.
  14. 14. The material surface inspection system of claim 11, wherein any of the first, second, and third grips comprises a first mount, a lift cylinder, a second mount, and a suction head; The lifting cylinder is arranged on the first mounting frame, the second mounting frame is in sliding connection with the first mounting frame and is connected with the output end of the lifting cylinder, the lifting cylinder is configured to drive the second mounting frame to reciprocate along the vertical direction, the suction head is arranged on a support, the support is in movable connection with the second mounting frame through a guide rod, and a buffer spring is sleeved on the guide rod between the support and the second mounting frame.

Description

Material surface detecting system based on vision Technical Field The invention relates to the technical field of material surface defect detection, in particular to a vision-based material surface detection system. Background In the subsequent process of manufacturing semiconductor chips and electronic components, the finished product materials need to be subjected to electrical performance test and strict appearance detection before leaving the factory, so that unqualified products with inconsistent external dimensions, defects such as cracks, chipping, scratches or foreign matter residues on the surfaces are removed, and the quality and reliability of the finally delivered products are ensured. Currently, in an automated production line, the materials to be inspected are typically carried in an array of grooves of a standard carrier (e.g., tray) for circulation. This type of carrying, while convenient for bulk transport, also presents significant challenges for all-round visual inspection, mainly in the following areas: First, there are limitations to the detection of the bulk (top and bottom) surfaces of the material. When the material is placed in the carrier, the top surface of the material is exposed to the outside and is easy to shoot by the camera above, however, the bottom surface of the material is attached to the bottom of the groove of the carrier and is in a visual blind area. Existing bottom surface detection techniques typically require that the entire tray of material be flipped over or that the material be transferred to a specific transparent glass tray for shooting. The whole tray is easy to damage due to collision of materials, and the transfer to the glass tray requires additional transfer equipment, so that the occupied area of the production line is large, the equipment cost is high, and the material circulation efficiency is low. Secondly, with the refinement of the packaging process, quality detection of the peripheral sides (i.e., the four side walls) of the material is increasingly critical. Side cracks or foreign matter may affect the subsequent mounting accuracy and even cause short circuits. However, the existing side detection technology generally adopts the following modes that firstly, after materials are sucked by a mechanical arm, the materials are respectively shot by matching with a plurality of cameras installed on the side, the hardware cost of the mode is high, the calibration of a plurality of cameras is complex, secondly, the materials are driven to rotate by a rotating mechanism, the materials are shot one by using a single fixed camera, the detection efficiency is low, the beat requirement of a high-speed production line is difficult to meet, and thirdly, the labor intensity and the omission ratio are high only by means of manual visual inspection. In addition, the existing detection equipment often has a single function, and usually only detection of a single face can be completed. In order to realize the omnibearing detection of the top surface, the bottom surface and the peripheral side surfaces of the material, the turnover among a plurality of devices is often needed, or complex multiple transfer and turnover actions are carried out in the same device. This requires a number of different process flows and manual coordination, severely limiting the throughput of the test per unit time. Therefore, there is a need for an integrated surface inspection system that can be integrated. Disclosure of Invention The invention aims to provide a vision-based material surface detection system which can efficiently complete all-dimensional imaging of the side surface, the bottom surface and the top surface of a material at one time and can automatically perform sorting treatment according to detection results. In order to achieve the above object, the present invention provides a vision-based material surface detection system, which includes: The carrier runner is used for receiving a carrier filled with a material to be detected and conveying the carrier along a preset path, and a side detection station, a bottom detection station, a top detection station and a sorting station are sequentially arranged on the path of the carrier runner; The side detection module is arranged corresponding to the side detection station and comprises a detection table, a first camera shooting assembly, a first transfer device and a first grabbing assembly, wherein the first camera shooting assembly is positioned below the detection table, and the first grabbing assembly is in sliding connection with the first transfer device; the first grabbing component is configured to reciprocate between the carrier runner and the detection platform so as to grab and place materials on the carrier runner into the through hole of the detection platform; The bottom surface detection module is arranged corresponding to the bottom surface detection station and comprises a second camera shooting assembly, a se