CN-122016821-A - Material week side detecting system based on vision

CN122016821ACN 122016821 ACN122016821 ACN 122016821ACN-122016821-A

Abstract

The invention discloses a vision-based material circumferential side detection system which comprises a conveying runner, a detection mechanism, a carrying mechanism and a grabbing mechanism, wherein the detection mechanism comprises a detection table and a shooting mechanism positioned below the detection table, a plurality of through holes are formed in the detection table, prism groups are embedded in the inner side walls of the through holes and are configured to reflect circumferential side images of materials placed in the through holes to the shooting mechanism, the carrying mechanism comprises a portal frame and a grabbing mechanism, the portal frame is arranged above the detection table and in butt joint with the conveying runner, the grabbing mechanism is arranged on the portal frame and is configured to reciprocate between the conveying runner and the detection table, and the grabbing mechanism is configured to grab and place the materials on the conveying runner into the through holes of the detection table. According to the material circumference side detection system, complete circumference side image information of the material can be obtained only through single shooting, so that the image acquisition time of the single material is greatly shortened, the detection beat is promoted, and positioning errors or mechanical damage caused by multiple rotations of the material are avoided.

Inventors

HUANG AIKE
PAN YONGPENG
TU ZHONGYUAN
LI XIAOFENG
MEI CHENGLIN

Assignees

深圳市标王工业设备有限公司

Dates

Publication Date: 20260512
Application Date: 20260408

Claims (11)

1. A vision-based material peripheral side detection system, comprising: the conveying runner is used for receiving a carrier filled with materials to be detected and conveying the carrier to the detection station; The detection mechanism comprises a detection table and a shooting mechanism positioned below the detection table, a plurality of through holes are formed in the detection table, prism groups are embedded in the inner side walls of the through holes, and the prism groups are configured to reflect the circumferential side images of materials placed in the through holes to the shooting mechanism; The conveying mechanism comprises a portal frame and a grabbing mechanism, wherein the portal frame is erected above the detection platform and is in butt joint with the conveying runner, the grabbing mechanism is arranged on the portal frame and is configured to reciprocate between the conveying runner and the detection platform so as to grab and place materials on the conveying runner into a through hole of the detection platform.
2. The material circumferential side detection system according to claim 1, wherein the conveying runner comprises two oppositely arranged racks, at least two supporting blocks arranged at a feeding station of the racks, and a power mechanism for driving the supporting blocks to rotate; The support blocks are respectively positioned at two opposite sides of the feeding station and are pivotally connected with the frame, and each support block is provided with a closed state extending towards the inner side of the frame to support the carrier and an open state separating from the inner space of the frame to release the carrier; The conveying runner also comprises connecting shafts arranged on two sides of the frame, each connecting shaft is connected with the corresponding supporting block on the corresponding side respectively, the power mechanism is in transmission connection with the connecting shafts, and the power mechanism is used for driving the connecting shafts to rotate so that the supporting blocks are switched between an open state and a closed state.
3. The material peripheral side detecting system according to claim 2, wherein the power mechanism comprises a first telescopic driving member, a push plate and a connecting block; The output end of the first 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.
4. The material peripheral side inspection system according to claim 2 wherein the transport runner further comprises a jacking platform disposed below the loading station of the frame, the transport runner further comprising a transfer trolley disposed within the frame, the jacking platform having a space for the transfer trolley to shuttle; the bottom of the jacking platform is connected with a lifting mechanism, and the jacking platform is configured to be lifted under the driving of the lifting mechanism so as to support the carrier on the supporting block; The transfer trolley is configured to move along the frame to receive individual carriers separated by the jacking table at the loading station and convey them to the detection station.
5. The material peripheral side inspection system according to claim 4 wherein the transfer trolley comprises a transfer device disposed along the frame and a vehicle body disposed on the transfer device, the transfer device for driving the vehicle body to move, the vehicle body for placing a carrier.
6. The material peripheral side surface detection system according to claim 5, wherein the vehicle body comprises a bottom plate and a supporting plate positioned above the bottom plate, wherein a claw is respectively arranged at the front end and the rear end of the supporting plate, and the claw is pivotally connected with the supporting plate, so that the claw is in a clamping state of being closed to fix a carrier or in a releasing state of being opened to release the carrier; The bottom plate is also provided with a second telescopic driving piece, and the output end of the second telescopic driving piece is connected with the clamping jaw and used for driving the clamping jaw to switch between the clamping state and the release state.
7. The material circumferential side detection system according to claim 1, wherein the gripping mechanism comprises a transfer mechanism arranged on the portal frame, and two gripping units 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 transfer mechanism, the second unit is connected with the first unit through a first axial adjustment mechanism, and the first axial adjustment mechanism controls the second unit to move along the first axial direction so as to adjust a 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.
8. The material flank detection system of claim 7, 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.
9. The material peripheral side inspection system according to claim 7 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.
10. The material flank detection system of claim 7, wherein any of the first grip, the second grip, and the third grip comprises a first mount, a lift cylinder, a second mount, and a suction head; The lifting cylinder is installed on the first installation frame, the second installation frame is in sliding connection with the first installation frame and is connected with the output end of the lifting cylinder, and the lifting cylinder is configured to drive the second installation frame to reciprocate along the vertical direction.
11. The material flank detection system of claim 10, wherein the suction head is mounted on a support, the support is movably connected 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 week side detecting system based on vision Technical Field The invention relates to the technical field of vision detection, in particular to a vision-based material circumferential side detection system. Background In the subsequent process of manufacturing the semiconductor chip, the finished chip is required to be subjected to not only electrical performance test but also strict appearance detection before leaving the factory, so as to remove unqualified products with defects such as inconsistent external dimensions, surface breakage or burrs, and the like, and ensure the quality of the final delivered product. Currently, conventional chip appearance inspection apparatuses mainly perform a visual scan of planarization for the Top (Top) and Bottom (Bottom) surfaces of chips. However, with the refinement of the chip packaging process, the quality of the peripheral side surfaces (i.e., the four side walls) of the chip is also critical, and cracks, chipping or foreign matter residues on the side surfaces may affect the subsequent mounting accuracy and even cause short circuits. The existing detection technology for the peripheral side surfaces of the chip generally adopts the following modes that firstly, after the chip is sucked up by a mechanical arm, the four side surfaces are respectively shot by matching with a plurality of cameras installed on the side surfaces, the mode needs to be provided with the plurality of cameras, the hardware cost is high, the calibration is complex, secondly, the chip is driven to rotate by a rotating mechanism, the single fixed camera is used for shooting the side surfaces one by one, the detection efficiency is low, the beat requirement of a high-speed production line is difficult to meet, thirdly, the labor intensity is high by means of manual visual inspection, and the omission rate and the misjudgment rate are high. Therefore, a new detection system for detecting the circumferential surface of the material is needed. Disclosure of Invention The invention aims to provide a vision-based material circumferential side detection system capable of rapidly and once carrying out imaging detection on the circumferential side of a material. In order to achieve the above object, the present invention provides a vision-based material circumferential side detection system, which includes: the conveying runner is used for receiving a carrier filled with materials to be detected and conveying the carrier to the detection station; The detection mechanism comprises a detection table and a shooting mechanism positioned below the detection table, a plurality of through holes are formed in the detection table, prism groups are embedded in the inner side walls of the through holes, and the prism groups are configured to reflect the circumferential side images of materials placed in the through holes to the shooting mechanism; The conveying mechanism comprises a portal frame and a grabbing mechanism, wherein the portal frame is erected above the detection platform and is in butt joint with the conveying runner, the grabbing mechanism is arranged on the portal frame and is configured to reciprocate between the conveying runner and the detection platform so as to grab and place materials on the conveying runner into a through hole of the detection platform. Preferably, the conveying runner comprises two oppositely arranged frames, at least two supporting blocks arranged at a feeding station of the frames and a power mechanism for driving the supporting blocks to rotate; The support blocks are respectively positioned at two opposite sides of the feeding station and are pivotally connected with the frame, and each support block is provided with a closed state extending towards the inner side of the frame to support the carrier and an open state separating from the inner space of the frame to release the carrier; The conveying runner also comprises connecting shafts arranged on two sides of the frame, each connecting shaft is connected with the corresponding supporting block on the corresponding side respectively, the power mechanism is in transmission connection with the connecting shafts, and the power mechanism is used for driving the connecting shafts to rotate so that the supporting blocks are switched between an open state and a closed state. Preferably, the power mechanism comprises a first telescopic driving piece, a push plate and a connecting block; The output end of the first 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 shaf