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CN-121978112-A - Non-flat plate surface detection device and detection method thereof

CN121978112ACN 121978112 ACN121978112 ACN 121978112ACN-121978112-A

Abstract

The invention discloses a non-flat plate surface detection device and a detection method thereof, which relate to the technical field of metal plate production and comprise a lifting unit, wherein the upper part of the lifting unit is fixedly connected with a detection unit, the light supplementing unit is fixedly arranged on the front side and the rear side of the lifting unit, the moving unit is arranged in the middle of the lifting unit, the supporting unit is movably arranged on the upper portion of the moving unit, and the plate is arranged on the upper portion of the supporting unit in a carrying mode. According to the invention, through the lifting unit, the detection unit, the moving unit and the supporting unit, plates with different thickness, length and flatness are adapted, meanwhile, detection requirements of plates with different materials are compatible, a wide compatible effect is realized, the applicable scene and practicality of the device are greatly improved, each structure is cooperatively linked through the detection flow of S1-S7, the whole flow does not need manual intervention, and continuous actions of feeding, positioning, adaptation, detection, overturning, re-detection and unloading are realized.

Inventors

  • HUANG XIUQIN
  • LUO XINBIN
  • HONG JINJIAN

Assignees

  • 科芃智能科技（苏州）有限公司

Dates

Publication Date
20260505
Application Date
20260205

Claims (10)

  1. 1. The non-flat plate surface detection device comprises a lifting unit (1) and is characterized in that the upper part of the lifting unit (1) is fixedly connected with a detection unit (2), the front side and the rear side of the lifting unit (1) are fixedly provided with light supplementing units (8), the middle part of the lifting unit (1) is provided with a moving unit (3), the upper part of the moving unit (3) is movably provided with a supporting unit (4), the upper part of the supporting unit (4) is provided with a plate (11), the right front side of the lifting unit (1) is provided with a feeding mechanical arm (5), the left front side of the lifting unit (1) is provided with a discharging mechanical arm (6), and the right rear side of the lifting unit (1) is provided with a turnover mechanical arm (7); The lifting unit (1) is used for driving the detection unit (2) to lift so as to adapt to boards (11) with different thicknesses, the detection unit (2) is used for detecting surface defects of the boards (11), and the light supplementing unit (8) is used for uniformly supplementing light to the surface of the boards (11); the mobile unit (3) is used for driving the back-and-forth movement of the supporting unit (4), so that the plate (11) carried on the upper portion of the supporting unit (4) moves along the lower portion of the detecting unit (2), the feeding mechanical arm (5) is used for transferring the plate (11) to be detected onto the supporting unit (4), the discharging mechanical arm (6) is used for removing the detected plate (11) from the supporting unit (4), and the overturning mechanical arm (7) is used for overturning the plate (11) by 180 degrees, so that the front surface and the back surface of the plate (11) can be detected by the detecting unit (2).
  2. 2. The non-flat plate surface detection device according to claim 1, wherein the lifting unit (1) comprises a bottom plate (101) which is symmetrically arranged left and right and fixedly connected to the ground through bolts, telescopic cylinders (102) are fixedly arranged in the middle of the upper end of the bottom plate (101), first fixing plates (103) are fixedly connected to telescopic ends of the telescopic cylinders (102), connecting frames (104) are fixedly connected to inner sides of the first fixing plates (103) through bolts, sliding blocks (106) are welded to four corners of the outer ends of the connecting frames (104), vertical guide frames (105) are welded to front and rear sides of the upper parts of the two bottom plates (101), and the sliding blocks (106) are slidably connected to inner sides corresponding to the vertical guide frames (105) so as to realize stable lifting of the connecting frames (104); the detection unit (2) comprises a transversely arranged mounting frame (201), and the left end and the right end of the mounting frame (201) are both rotationally connected to the two connecting frames (104) arranged on the left side and the right side.
  3. 3. The non-flat plate surface detection device according to claim 2, wherein a plurality of fixed blocks (202) are fixedly connected to the bottom of the mounting frame (201) at equal intervals through bolts, and detection probes (203) are connected to the bottoms of the fixed blocks (202) in a threaded manner; A first driving motor (204) is fixedly connected to the outer side of the connecting frame (104) on the right side, and a rotating shaft of the first driving motor (204) is fixedly connected to the right end of the mounting frame (201); The light supplementing unit (8) comprises a transversely arranged installation transverse frame (801), a second fixing plate (802) is arranged at the left end and the right end of the installation transverse frame (801) in a welded mode, the second fixing plate (802) is fixedly connected with the corresponding inner side of the connecting frame (104) through bolts, a plurality of installation hoops (803) are arranged on the outer side of the installation transverse frame (801) at equal intervals, light supplementing lamps (805) are connected with the bottoms of the installation hoops (803) in a threaded mode, and first fixing hoops (804) are fixedly connected with the upper portions of the installation hoops (803) through bolts.
  4. 4. The non-flat plate surface detection device according to claim 1, wherein the moving unit (3) comprises a base (301) symmetrically arranged in front and back and fixedly connected to the ground through bolts, a second driving motor (302) is fixedly arranged at the front part of the base (301), a threaded screw (303) is rotatably connected to the middle part of the base (301) at the front and back sides, and a rotating shaft of the second driving motor (302) is fixedly connected to the front end of the threaded screw (303); The supporting unit (4) comprises a movable frame (401), the middle part of the movable frame (401) is in threaded connection with the outer side of the threaded screw rod (303), the upper parts of the left side and the right side of the movable frame (401) are fixedly connected with a sliding frame (402) through bolts, the front end and the rear end of the middle part of the sliding frame (402) are respectively provided with a supporting slide block (403) in a sliding manner, the upper parts of the left side and the right side corresponding to the supporting slide blocks (403) are welded and provided with supporting rods (404), and the plate (11) is carried on the upper parts of the supporting rods (404).
  5. 5. The non-flat panel surface detection device according to claim 4, wherein bearing seats (305) fixed on the ground by bolts are arranged on the inner side of the base (301), and the front end and the rear end of the threaded screw rod (303) are rotatably connected to the inner sides of the corresponding bearing seats (305); Guide rods (304) are fixedly arranged at the left and right ends of the inner side of the base (301), and the left and right sides of the movable frame (401) are slidably connected to the outer sides corresponding to the guide rods (304).
  6. 6. The non-flat plate surface detection device according to claim 4, wherein a plurality of insertion holes (405) are formed in the middle of the supporting slide block (403) and the sliding frame (402) at equal intervals in the transverse direction, and insertion bolts (406) are arranged in the insertion holes (405); The supporting unit (4) further comprises two longitudinal guide frames (407) which are longitudinally symmetrically arranged and fixedly connected to the ground through bolts, guide grooves (408) are formed in the upper portions of the longitudinal guide frames (407), guide pulleys (409) are fixedly connected to the front side and the rear side of the bottom of the sliding frame (402), and the guide pulleys (409) are slidably connected to the inner sides of the corresponding guide grooves (408).
  7. 7. The non-flat plate surface detection device according to claim 4, wherein rubber pads (9) are arranged on the upper portions of the supporting rods (404), semicircular grooves (901) are formed in the bottoms of the rubber pads (9), the semicircular grooves (901) are clamped on the upper portions of the supporting rods (404), rapid positioning and installation of the rubber pads (9) are achieved, and a plurality of second fixing hoops (10) are fixedly connected to the bottom ends of the rubber pads (9) through bolts.
  8. 8. The non-flat plate surface detection method is applied to the non-flat plate surface detection device as claimed in any one of claims 1 to 7, and is characterized by comprising the following detection methods: S1, feeding and positioning, namely transferring a plate (11) to be detected to the upper parts of front and rear side support rods (404) of a support unit (4) through a feeding mechanical arm (5), clamping a semicircular groove (901) of a rubber pad (9) on the support rods (404) to realize quick positioning, locking the rubber pad (9) through a second fixing clamp (10), sliding the position of a support sliding block (403) on a sliding frame (402) according to the length of the plate (11), inserting a plug (406) into a jack (405) at a corresponding position, and locking the distance between the front side support rod and the rear side support rods (404); S2, detecting the height adaptation, namely starting a telescopic cylinder (102) of the lifting unit (1), driving a first fixed plate (103) to drive a connecting frame (104) to lift, enabling the connecting frame (104) to stably move along a vertical guide frame (105) through a sliding block (106), and adjusting the distance between the detecting unit (2) and the plate (11); S3, light supplementing adjustment, namely loosening a first fixed clamp (804) of the light supplementing unit (8), adjusting the position of the mounting clamp (803) on the mounting transverse frame (801), adjusting the irradiation angle of the light supplementing lamp (805) through threads, enabling the light supplementing lamp (805) to form uniform light supplementing irradiation on the surface of the plate (11), and locking the first fixed clamp (804) after adjustment is completed; s4, front detection, namely starting a first driving motor (204) of the detection unit (2), driving the mounting frame (201) to rotate around the left and right side connecting frames (104), adjusting the detection angle of the detection probe (203), and adjusting the extension length of the detection probe (203) on the fixed block (202) through threads; the detection probe (203) adopts a homogenizing line laser surface image acquisition technology, and realizes uniform illumination on the surface of the plate (11) by precisely controlling the laser projection angle and the light intensity distribution; The second driving motor (302) of the moving unit (3) is synchronously started, the threaded screw rod (303) is driven to rotate around the bearing seat (305), the moving frame (401) is driven to move forwards and backwards along the guide rod (304), the supporting unit (4) synchronously and stably moves along the guide groove (408) of the longitudinal guide frame (407) through the guide pulley (409), the plate (11) moves backwards at a constant speed along the lower part of the detecting unit (2), and the detecting probe (203) completes comprehensive detection of the front surface of the plate.
  9. 9. The method for inspecting the surface of a non-flat sheet according to claim 8, further comprising the steps of: S5, turning over the plate, namely driving the supporting unit (4) by the moving unit (3) to drive the plate (11) to move to the position corresponding to the turning-over mechanical arm (7), and turning over the plate (11) by 180 degrees through the turning-over mechanical arm (7); S6, reverse side detection, namely switching a detection probe (203) to a self-measurement servo visual surface detection mode, sensing specification change of the plate (11) in real time, and automatically adjusting detection parameters of the detection probe (203) and a rotation angle of the mounting frame (201); Repeating the driving flow of the moving unit (3) in the step S4, so that the overturned plate (11) moves forwards at a constant speed along the lower direction of the detecting unit (2), and the detecting probe (203) completes the comprehensive detection of the back surface of the plate; And S7, after the detection is finished, the moving unit (3) drives the supporting unit (4) to drive the plate (11) to move to the corresponding position of the unloading mechanical arm (6), and the detected plate is removed from the supporting rod (404) through the unloading mechanical arm (6) to finish a single detection flow.
  10. 10. The method for detecting the surface of the non-flat plate according to any one of claims 8 and 9, wherein in the step S4, in the process of collecting the laser surface image of the homogenizing line, the laser intensity output is adjusted in real time according to the material characteristics of the plate (11), so that uniform illuminance can be formed in the convex and concave areas of the plate, and imaging distortion caused by reflection or shadow is avoided; In the self-determination servo visual surface detection process in the step S6, a detection probe (203) analyzes acquired image data in real time, if the thickness and the position of the plate are detected to change, signals are automatically fed back to a lifting unit (1) and a detection unit (2), the detection height is finely adjusted through a telescopic cylinder (102), the detection angle is finely adjusted through a first driving motor (204), and the driving speed of a moving unit (3) is synchronously adjusted, so that the optimal detection distance and the optimal acquisition frequency between the detection probe (203) and the surface of the plate are kept; Image data acquired by the detection probe (203) are transmitted to a background processing system in real time, the system performs defect identification on an image under laser illumination, and the position and the size of the defect are accurately positioned by combining plate gesture data fed back by the self-determination servo module; The lifting unit (1), the moving unit (3), the detecting unit (2) and the feeding mechanical arm (5), the discharging mechanical arm (6) and the overturning mechanical arm (7) realize action coordination through the linkage control module, when the detecting probe (203) detects serious defects, the moving unit (3) can be triggered to stop moving, and after manual confirmation, the moving unit can continue to detect or can be directly transferred to a defective product area through the discharging mechanical arm (6).

Description

Non-flat plate surface detection device and detection method thereof Technical Field The invention relates to the technical field of metal plate production, in particular to a non-flat plate surface detection device and a detection method thereof. Background The metal plate is widely applied in industrial production, the surface quality of the metal plate directly influences the performance and the attractiveness of a product, the traditional detection method mainly depends on manual visual inspection or single-point instrument measurement, along with the development of industrial automation, a machine vision detection technology is gradually applied to the field of plate surface detection, however, the non-flat metal plate has a great challenge to automatic detection due to the fact that the surface geometry of the non-flat metal plate is complex and has a light reflection characteristic, and the high-precision and high-efficiency surface defect identification is difficult to realize in the prior art. The traditional detection method is often interfered by factors such as uneven light reflection, shadow, high light, surface deformation and the like, so that the acquired image quality is poor, defects are difficult to accurately identify, and therefore, a non-flat plate surface detection device and a detection method thereof are required to be designed to solve the problems. Disclosure of Invention The technical scheme includes that the non-flat plate surface detection device comprises a lifting unit, wherein the upper part of the lifting unit is fixedly connected with a detection unit, the front side and the rear side of the lifting unit are fixedly provided with light supplementing units, the middle part of the lifting unit is provided with a moving unit, the upper part of the moving unit is movably provided with a supporting unit, the upper part of the supporting unit is provided with a plate, the right front side of the lifting unit is provided with a feeding mechanical arm, the left front side of the lifting unit is provided with a discharging mechanical arm, and the right rear side of the lifting unit is provided with a turnover mechanical arm; The lifting unit is used for driving the lifting of the detection unit so as to adapt to boards with different thicknesses, the detection unit is used for detecting surface defects of the boards, and the light supplementing unit is used for carrying out uniform light supplementing on the surfaces of the boards; the mobile unit is used for driving the back-and-forth movement of the supporting unit, so that the plate carried on the upper portion of the supporting unit moves along the lower portion of the detecting unit, the feeding mechanical arm is used for transferring the plate to be detected onto the supporting unit, the discharging mechanical arm is used for removing the detected plate from the supporting unit, and the overturning mechanical arm is used for overturning the plate by 180 degrees, so that the front surface and the back surface of the plate can be detected by the detecting unit. Preferably, the lifting unit comprises a bottom plate which is symmetrically arranged left and right and is fixedly connected to the ground through bolts, telescopic cylinders are fixedly arranged in the middle of the upper end of the bottom plate, first fixing plates are fixedly connected to telescopic ends of the telescopic cylinders, connecting frames are fixedly connected to inner sides of the first fixing plates through bolts, sliding blocks are welded to four corners of outer ends of the connecting frames, vertical guide frames are welded to front and rear sides of the upper parts of the two bottom plates, and the sliding blocks are slidably connected to inner sides of the corresponding vertical guide frames so as to realize stable lifting of the connecting frames; the detecting unit comprises a transversely arranged mounting frame, and the left end and the right end of the mounting frame are respectively and rotatably connected to the two connecting frames arranged on the left side and the right side. Preferably, the bottom of the mounting frame is fixedly connected with a plurality of fixing blocks at equal intervals through bolts, and the bottoms of the fixing blocks are respectively connected with a detection probe in a threaded manner; The outer side of the connecting frame on the right side is fixedly connected with a first driving motor, and a rotating shaft of the first driving motor is fixedly connected to the right end of the mounting frame; The light filling unit is all including the horizontal installation crossbearer that sets up, the equal welding of the left and right sides end of installation crossbearer is provided with the second fixed plate, the second fixed plate is all through bolt fixed connection in corresponding one side in the link, the outside equidistance of installation crossbearer is provided with a plurality of installation clamp, the