Visual defect detection equipment

Abstract

The utility model relates to the technical field of visual detection, in particular to visual defect detection equipment which comprises a workbench, a protective cover covering the workbench, a backlight plate fixed on the workbench, a clamp installed on the workbench and a visual camera assembly arranged above the workbench. The detection driving assembly is used for driving the visual camera assembly to move left and right, the protective cover is installed on the workbench, the detection driving assembly is installed on the inner side of the top of the protective cover, the clamp is used for clamping and positioning a product on a backlight plate, and a controller is arranged on the protective cover; the device can detect the defects of uneven density, holes, scratches, smudginess, pits and the like on a product, avoids the situation that the defects of the holes, the pits and the like are not observed, and ensures the quality of the product.

Description

TECHNICAL FIELD

[0001] The utility model relates to visual inspection technical field, concretely is a kind of visual defect detection equipment. BACKGROUND

[0002] Polishing pad, PCB and other products need to be visually inspected after production to prevent density unevenness, holes, scratches, dirt, pits and other conditions during production. For example, the Chinese patent with the authorization announcement No.CN211965066U discloses a visual defect detection equipment, which includes a conveying mechanism, a material guiding mechanism, a detection mechanism and a defective product discharging mechanism. The conveying mechanism, the material guiding mechanism and the detection mechanism are located above the workbench. The detection mechanism is located above the material guiding mechanism. The defective product discharging mechanism is located downstream of the detection mechanism. The material guiding mechanism is provided with two material guiding plates, which are respectively located on the left and right sides of the product. The material guiding plate is provided with a plurality of guide wheels installed along the direction of product conveying. One end of the connecting rod is provided with a limiting head. The other end of the connecting rod passes through the mounting plate and is connected with the material guiding plate. The mounting plate is fixed to the workbench. The guide rod is fixed with the material guiding plate, and the other end of the guide rod passes through the mounting plate. The guide rod is provided with a spring, which is located between the material guiding plate and the mounting plate. The image detection is comprehensive and accurate. The defective products are discharged into the defective product storage groove after detection, and the automation degree is high.

[0003] However, in actual application, the above-mentioned equipment can only conduct visual inspection from top to bottom. When the product has holes, pits and other defects on the upper surface, the CCD camera shooting from top to bottom cannot detect some holes, pits and other defects, which may affect the quality of the product. UTILITY MODEL CONTENTS

[0004] The utility model aims at the above-mentioned defects, and provides a visual defect detection equipment, which can detect the density unevenness, holes, scratches, dirt, pits and other defects on the product, avoid the situation that holes, pits and other defects are not observed, and ensure the quality of the product.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A visual defect detection equipment includes a workbench, a protective cover covering the workbench, a backlight plate fixed to the workbench, a clamp installed on the workbench, a visual camera assembly arranged above the workbench, a detection driving assembly for driving the visual camera assembly to move left and right, the protective cover is installed on the workbench, the detection driving assembly is installed on the top inner side of the protective cover, the clamp is used for clamping and positioning the product on the backlight plate, the protective cover is provided with a controller, and the backlight plate, the clamp, the visual camera assembly and the detection driving assembly are electrically connected with the controller.

[0007] Further, the detection driving assembly comprises detection driving sliding rails fixed in parallel on the inner side of the top of the protective cover, a detection driving sliding seat slidably connected to the detection driving sliding rails, a transverse motor arranged in parallel with the detection driving sliding rails, and a detection driving sliding frame arranged on the movable end of the transverse motor, wherein the detection driving sliding frame is fixedly connected to the detection driving sliding seat, and the visual camera assembly is mounted on the detection driving sliding frame.

[0008] Further, the visual camera assembly comprises an L-shaped detection frame, a plurality of area array cameras and a plurality of line scanning cameras fixed on the upper side of the transverse part of the detection frame, a planar light source plate fixed on the lower side of the transverse part of the detection frame, a line scanning light source frame arranged on the vertical part of the detection frame, and a plurality of line scanning light sources mounted on the line scanning light source frame, wherein the planar light source plate is arranged directly below the plurality of area array cameras, the bottom of the planar light source plate is provided with a plurality of planar light apertures penetrating through the planar light source plate and the transverse part of the detection frame, the shooting end of the area array camera is arranged downward and directly opposite to the planar light apertures, the line scanning camera corresponds to the area array camera in one-to-one correspondence, the shooting end of the line scanning camera is arranged downward, and the light supplementing end of the line scanning light source is directed to the backlight plate directly below the shooting end of the line scanning camera.

[0009] Further, the vertical part of the detection frame is provided with two vertical frames arranged in front-to-back symmetry, a center hole is arranged on the vertical frame, a circular arc adjusting groove is arranged around the center hole, and the end of the line scanning light source frame is rotatably connected to the center hole through a center shaft and connected to the circular arc adjusting groove through a tightening bolt.

[0010] Further, the clamp comprises two clamping plates arranged in left-right symmetry, a mounting plate arranged below the clamping plates, two clamping sliding rails arranged on the mounting plate in symmetry, a clamping sliding seat slidably connected to the clamping sliding rails, and a clamping cylinder fixed on the mounting plate, wherein the backlight plate is arranged below the mounting plate, the bottom of the clamping plate is provided with a connecting seat, the rod head of the piston rod of the clamping cylinder is horizontally extended to drive the connecting seat, and the clamping sliding seat is fixed on the back of the clamping plate.

[0011] Further, one side of the clamping plate is provided with a circular arc clamping groove, and two circular arc clamping grooves are arranged on the opposite surfaces of the two clamping plates.

[0012] Further, the utility model also comprises a lifting cylinder fixed on the workbench in symmetry, a plurality of guide sleeves fixed on the workbench, a sliding rod slidably connected to the guide sleeves in an up-down manner at the bottom end, and a mounting plate, wherein the top end of the sliding rod is fixedly connected to the bottom surface of the mounting plate, and the rod head of the piston rod of the lifting cylinder is vertically extended upward to drive the bottom surface of the mounting plate.

[0013] The utility model discloses the beneficial effect is:

[0014] In actual application, the product to be detected is placed on the backlight plate, the backlight plate provides light to the back of the product, the clamp clamps and positions the product on the backlight plate, the detection driving assembly drives the visual camera assembly to move horizontally, and the visual camera assembly detects the product during the horizontal movement; the utility model can detect the uneven density, holes, scratches, dirt, pits and other defects on the product, avoid the situation that the holes, pits and other defects are not observed, and ensure the quality of the product. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the overall structure schematic diagram of the utility model;

[0016] Figure 2 is the front view of the utility model;

[0017] Figure 3 is the structure schematic diagram of the inside of the protective cover;

[0018] Figure 4 is the structure schematic diagram of the detection driving assembly and the visual camera assembly in the utility model;

[0019] Figure 5 is the structure schematic diagram of the workbench, the backlight plate and the clamp in the utility model;

[0020] Figure 6 is the front view of the workbench, the backlight plate and the clamp in the utility model;

[0021] Reference signs: workbench 1; protective cover 2; backlight plate 3; visual camera assembly 4; detection frame 41; center hole 411; circular arc adjusting groove 412; area array camera 42; line scanning camera 43; planar light source plate 44; planar light opening 441; line scanning light source frame 45; line scanning light source 46; detection driving assembly 5; detection driving slide rail 51; detection driving slide base 52; horizontal motor 53; detection driving slide frame 54; controller 6; clamp 7; clamping plate 71; circular arc clamping groove 711; mounting plate 72; clamping slide rail 73; clamping slide base 74; clamping air cylinder 75; connecting seat 76; lifting air cylinder 77; guide sleeve 78; slide rod 79. DETAILED DESCRIPTION

[0022] As Figures 1-6As shown, a visual defect detection device, including a workbench 1, a protective cover 2 covered on the workbench 1, a backlight plate 3 fixed on the workbench 1, a clamp 7 installed on the workbench 1, a visual camera assembly 4 arranged above the workbench 1, a detection driving assembly 5 used for driving the visual camera assembly 4 to move left and right, the protective cover 2 is installed on the workbench 1, the detection driving assembly 5 is installed on the top inner side of the protective cover 2, the clamp 7 is used for clamping and positioning the product on the backlight plate 3, the protective cover 2 is provided with a controller 6, and the backlight plate 3, the clamp 7, the visual camera assembly 4 and the detection driving assembly 5 are electrically connected with the controller 6.

[0023] In use, the product to be detected is placed on the backlight plate 3, the product is lighted from the back through the backlight plate 3, the product on the backlight plate 3 is clamped and positioned through the clamp 7, the visual camera assembly 4 is driven to move laterally through the detection driving assembly 5, and the product is visually detected by the visual camera assembly 4 during the lateral movement. The utility model can detect the density unevenness, holes, scratches, dirt, pits and other defects on the product, avoid the situation that the holes, pits and other defects are not observed, and ensure the quality of the product.

[0024] Further, the detection driving assembly 5 includes a detection driving slide rail 51 fixed in parallel on the top inner side of the protective cover 2, a detection driving slide base 52 slidably connected on the detection driving slide rail 51, a transverse motor 53 arranged in parallel with the detection driving slide rail 51, a detection driving slide carriage 54 provided on the movable end of the transverse motor 53, the detection driving slide carriage 54 is fixedly connected with the detection driving slide base 52, and the visual camera assembly 4 is installed on the detection driving slide carriage 54. In this embodiment, during the lateral movement of the detection driving slide carriage 54 driven by the transverse motor 53, the detection driving slide carriage 54 slides along the detection driving slide rail 51 through the detection driving slide base 52, so that the visual camera assembly 4 moves laterally.

[0025] Furthermore, the visual camera assembly 4 includes an L-shaped detection frame 41, multiple area scan cameras 42 and multiple line scan cameras 43 fixed to the upper side of the horizontal portion of the detection frame 41, a planar light source plate 44 fixed to the lower side of the horizontal portion of the detection frame 41, a line scan light source frame 45 disposed on the vertical portion of the detection frame 41, multiple line scan light sources 46 mounted on the line scan light source frame 45, the planar light source plate 44 being disposed directly below the multiple area scan cameras 42, and the bottom of the planar light source plate 44 having multiple planar light openings 441 penetrating the planar light source plate 44 and the horizontal portion of the detection frame 41, and the area scan cameras 42 capturing images... The camera end is positioned downwards, directly facing the planar light opening 441. The line scan camera 43 and the area scan camera 42 correspond one-to-one. The shooting end of the line scan camera 43 is positioned downwards, and the supplementary light end of the line scan light source 46 faces the backlight plate 3 directly below the shooting end of the line scan camera 43. In this embodiment, during the transverse movement of the inspection frame 41, the area scan camera 42 performs visual inspection on the upper surface of the product through the planar light source plate 44 and the planar light opening 441. At the same time, the line scan light source 46 illuminates the upper surface of the product at an angle, making holes and pits easier to see. At this time, the line scan camera 43 performs visual inspection on the shooting end of the line scan light source 46, resulting in more accurate inspection results.

[0026] Furthermore, the vertical part of the detection frame 41 consists of two vertical frames arranged symmetrically front and back. Each vertical frame has a central hole 411 and an arc-shaped adjustment groove 412 centered on the central hole 411. The end of the line scan light source frame 45 is rotatably connected to the central hole 411 via a central shaft and connected to the arc-shaped adjustment groove 412 via tightening bolts. In this embodiment, since different products have different thicknesses, the line scan light source frame 45 is rotatably connected to the central hole 411 via a central shaft and connected to the arc-shaped adjustment groove 412 via tightening bolts, making the illumination angle of the line scan light source frame 45 and the line scan light source 46 adjustable, thus making it suitable for testing different products and improving its applicability.

[0027] Furthermore, the clamp 7 includes two clamping plates 71 symmetrically arranged on the left and right, a mounting plate 72 disposed below the clamping plates 71, two clamping slide rails 73 symmetrically arranged on the mounting plate 72, a clamping slide block 74 slidably connected to the clamping slide rails 73, and a clamping cylinder 75 fixed on the mounting plate 72. The backlight plate 3 is disposed below the mounting plate 72. A connecting seat 76 is disposed at the bottom of the clamping plates 71. The piston rod head of the clamping cylinder 75 extends horizontally to drive and connect to the connecting seat 76. The clamping slide block 74 is fixed to the back of the clamping plates 71. In this embodiment, during the process of the piston rod head of the clamping cylinder 75 extending to drive the connecting seat 76, the two clamping plates 71 move closer to each other. The clamping slide block 74 slides along the clamping slide rails 73 to guide the clamping plates 71 and clamp the product between the two clamping plates 71.

[0028] Furthermore, one side of the clamping plate 71 is provided with an arc-shaped clamping groove 711, and two arc-shaped clamping grooves 711 are provided on the opposite surfaces of the two clamping plates 71; in this embodiment, the circular polishing plate is positioned by the two arc-shaped clamping grooves 711, resulting in a better clamping effect.

[0029] Furthermore, it also includes lifting cylinders 77 symmetrically fixed on the worktable 1, multiple guide sleeves 78 fixed on the worktable 1, a slide rod 79 whose bottom end is slidably connected to the guide sleeve 78, and the top end of the slide rod 79 is fixedly connected to the bottom surface of the mounting plate 72. The piston rod head of the lifting cylinder 77 extends vertically upward to drive and connect to the bottom surface of the mounting plate 72. In this embodiment, by extending the piston rod head of the lifting cylinder 77 vertically upward to drive the mounting plate 72 to rise, the clamping height of the clamping plate 71 can be adjusted to make it suitable for different product testing applications. By sliding the slide rod 79 up and down along the guide sleeve 78, the slide rod 79 and the mounting plate 72 can be guided up and down.

[0030] The specific embodiments described herein are merely illustrative examples of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the scope defined by this utility model.

Claims

1. A visual defect detection device, characterized in that: The device includes a worktable, a protective cover covering the worktable, a backlight panel fixed on the worktable, a clamp mounted on the worktable, a vision camera assembly positioned above the worktable, and a detection drive assembly for driving the vision camera assembly to move left and right. The protective cover is mounted on the worktable, and the detection drive assembly is mounted on the top inner side of the protective cover. The clamp is used to clamp and position the product on the backlight panel. A controller is provided on the protective cover, and the backlight panel, clamp, vision camera assembly, and detection drive assembly are all electrically connected to the controller.

2. The visual defect detection device according to claim 1, characterized in that, The detection drive assembly includes a detection drive slide rail fixed parallel to the inner side of the top of the protective cover, a detection drive slide block slidably connected to the detection drive slide rail, a transverse motor arranged parallel to the detection drive slide rail, a detection drive carriage provided at the movable end of the transverse motor, the detection drive carriage being fixedly connected to the detection drive slide block, and the vision camera assembly mounted on the detection drive carriage.

3. The visual defect detection device according to claim 1, characterized in that, The vision camera assembly includes an L-shaped inspection frame, multiple area scan cameras and multiple line scan cameras fixed to the upper side of the horizontal portion of the inspection frame, a planar light source plate fixed to the lower side of the horizontal portion of the inspection frame, a line scan light source frame disposed on the vertical portion of the inspection frame, multiple line scan light sources mounted on the line scan light source frame, the planar light source plate being disposed directly below the multiple area scan cameras, and the bottom of the planar light source plate having multiple planar light openings penetrating the planar light source plate and the horizontal portion of the inspection frame, the shooting ends of the area scan cameras being downward and facing the planar light openings, the line scan cameras corresponding one-to-one with the area scan cameras, the shooting ends of the line scan cameras being downward, and the supplementary light ends of the line scan light sources facing the backlight plate directly below the shooting ends of the line scan cameras.

4. The visual defect detection device according to claim 3, characterized in that, The vertical part of the detection frame consists of two vertical frames arranged symmetrically front and back. Each vertical frame has a central hole and an arc-shaped adjustment groove centered on the central hole. The end of the line scan light source frame is rotatably connected to the central hole via a central shaft and connected to the arc-shaped adjustment groove via tightening bolts.

5. A visual defect detection device according to claim 1, characterized in that, The clamp includes two clamping plates symmetrically arranged on the left and right, a mounting plate disposed below the clamping plates, two clamping slide rails symmetrically arranged on the mounting plate, a clamping slide block slidably connected to the clamping slide rails, and a clamping cylinder fixed on the mounting plate. The backlight panel is disposed below the mounting plate. A connecting seat is disposed at the bottom of the clamping plates. The piston rod head of the clamping cylinder extends horizontally and drives the connecting seat. The clamping slide block is fixed to the back of the clamping plates.

6. A visual defect detection device according to claim 5, characterized in that, One side of the clamping plate is provided with an arc-shaped clamping groove, and the two arc-shaped clamping grooves are provided on the opposite surfaces of the two clamping plates.

7. A visual defect detection device according to claim 5, characterized in that, It also includes lifting cylinders symmetrically fixed on the worktable, multiple guide sleeves fixed on the worktable, a slide rod whose bottom end is slidably connected to the guide sleeve, the top end of the slide rod being fixedly connected to the bottom surface of the mounting plate, and the piston rod head of the lifting cylinder extending vertically upward to drive and connect to the bottom surface of the mounting plate.

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