WO2020191919A1 - 一种外观检测设备及待检测产品的外观检测方法 - Google Patents

一种外观检测设备及待检测产品的外观检测方法 Download PDF

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Publication number
WO2020191919A1
WO2020191919A1 PCT/CN2019/090170 CN2019090170W WO2020191919A1 WO 2020191919 A1 WO2020191919 A1 WO 2020191919A1 CN 2019090170 W CN2019090170 W CN 2019090170W WO 2020191919 A1 WO2020191919 A1 WO 2020191919A1
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WIPO (PCT)
Prior art keywords
main surface
product
inspection
inspected
light source
Prior art date
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Ceased
Application number
PCT/CN2019/090170
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English (en)
French (fr)
Inventor
朱江兵
李强
常浩
李金才
李朋辉
卢亚宾
牛广升
徐小武
丁旺
金麟
赵栋涛
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Bozhon Precision Industry Technology Co Ltd
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Bozhon Precision Industry Technology Co Ltd
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Filing date
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Application filed by Bozhon Precision Industry Technology Co Ltd filed Critical Bozhon Precision Industry Technology Co Ltd
Publication of WO2020191919A1 publication Critical patent/WO2020191919A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination

Definitions

  • This article relates to the technical field of appearance inspection, for example, it relates to an appearance inspection device and an appearance inspection method of a product to be inspected.
  • This article provides an appearance inspection equipment that can realize the uniformity and standardization of product appearance inspection, and high-efficiency inspection.
  • This article also provides an appearance inspection method for the product to be inspected, which can achieve high-efficiency inspection of the appearance of the product.
  • This article provides a visual inspection equipment, including:
  • the conveying system includes a conveying track, and a loading and unloading fixture and a conveying device on the conveying track;
  • the main surface detection system is configured to detect the main surface of the product to be tested
  • the middle frame detection system is configured to detect the middle frame part of the product to be detected
  • a concave surface detection system configured to detect a groove provided on the main surface
  • the convex surface detection system is configured to detect the plane convexly arranged on the main surface and.
  • This article also proposes an appearance inspection method for the product to be inspected, which is used to perform the appearance inspection of the product to be inspected by using the above-mentioned appearance inspection equipment.
  • the appearance inspection equipment also includes an inspection station.
  • the appearance inspection method for the product to be inspected includes the following step:
  • the second main surface is inspected at the first inspection station, and at least one of the groove and the convex plane of the second main surface is inspected at the second inspection station.
  • the main surface of the inspection product includes the first main surface and the second main surface, and the inspection station includes the first inspection station and the second inspection station.
  • FIG. 1 is a schematic structural diagram of an appearance inspection device in an embodiment of the present invention from a first perspective
  • FIG. 2 is a schematic structural diagram of an appearance inspection device in an embodiment of the present invention from a second perspective
  • Fig. 3 is a schematic structural diagram of a conveying system in an embodiment of the present invention.
  • Figure 4 is a schematic structural diagram of a loading fixture in an embodiment of the present invention.
  • Figure 5 is a schematic structural view of a splint in an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a main surface detection system installed on a gantry in an embodiment of the present invention
  • Figure 7 is a schematic structural diagram of a side adjustment plate assembly in an embodiment of the present invention.
  • Figure 8 is a schematic structural diagram of a first angle adjustment plate in an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a second angle adjustment plate in an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a middle frame detection system in an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a concave surface detection system in an embodiment of the present invention from a first view angle
  • FIG. 12 is a schematic structural diagram of a concave surface detection system in an embodiment of the present invention from a second view angle;
  • Figure 13 is a schematic structural diagram of a connector in an embodiment of the present invention.
  • FIG. 14 is a schematic structural diagram of a convex surface detection system installed on a gantry in an embodiment of the present invention
  • Fig. 15 is an enlarged schematic diagram of A in Fig. 14;
  • Figure 16 is a schematic structural diagram of a turnover mechanism in an embodiment of the present invention.
  • Fig. 17 is a schematic structural diagram of an appearance inspection device placed in a housing in an embodiment of the present invention.
  • Main surface detection system 110, first imaging device; 120, first light source; 121, first main light source; 122, first side light source; 130, first adjusting plate; 131, first elongated hole; 140 , The first orifice plate; 150, the second adjustment plate; 151, the second elongated hole; 160, the side adjustment plate assembly; 1601, the third elongated hole; 1602, the fourth elongated hole; 1603, the fifth elongated hole Hole; 1604, relief slot; 1605, sixth long hole; 1606, seventh long hole; 161, first side plate; 162, second side plate; 163, third side plate; 164, fourth side 165, the first connecting frame; 166, the second connecting frame; 167, the first angle adjusting plate; 1671, the first arc-shaped slot; 168, the second angle adjusting plate; 1681, the second arc-shaped slot; 169,
  • Middle frame detection system 210, second imaging device; 220, second light source; 230, second mounting bracket; 231, middle frame detection vertical plate; 232, angle adjustment platform; 233, middle frame light source mounting plate; 2331 , Waist hole;
  • Convex detection system 410. Fourth imaging device; 420. Fourth light source; 430. Fourth mounting bracket; 431. Second orifice plate; 432. Third adapter; 433. Third adjustment plate; 4331 The tenth long hole; 434, the fourth adjustment plate; 4341, the eleventh long hole;
  • Inspection station 911. First inspection station; 912. Second inspection station; 920. Turnover station.
  • the “on” or “under” of the first feature of the second feature may include direct contact between the first and second features, or include whether the first and second features are in direct contact. Direct contact but contact through another feature between them.
  • “above”, “above” and “above” the second feature of the first feature include the first feature being directly above and obliquely above the second feature, or it simply means that the level of the first feature is higher than the second feature.
  • the “below”, “below” and “below” the first feature of the second feature include the first feature directly below and obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.
  • this embodiment provides an appearance inspection device, which is mainly used to inspect the appearance of a mobile phone 1', a tablet computer, and the like.
  • the appearance of the mobile phone 1' may generally include a main surface (the main surface includes a first main surface 11' and a second main surface 12' that are disposed oppositely), and the first main surface 11' and The middle frame portion 13' between the second main surfaces 12' additionally includes a groove recessed on the first main surface 11', and a plane projecting on the second main surface 12', wherein the groove can be used
  • the plane protruding from the second main surface 12' can be the plane of the mobile phone 1'rear camera protruding from the mobile phone housing.
  • the groove can be provided on the second main surface 12', the convex plane can be provided on the first main surface 11', or both the first main surface 11' and the second main surface 12' are provided with
  • the grooves and protrusions are provided with flat surfaces. This embodiment mainly introduces the mobile phone 1'as the product to be detected.
  • the appearance inspection equipment includes a conveying system 600 and an inspection station 910.
  • the conveying system 600 includes a conveying track 640, and a loading and unloading fixture and a conveying device 630 located on the conveying track 640; the inspection station 910 is provided with a main surface inspection along the conveying track 640 System 100, middle frame detection system 200, concave surface detection system 300, convex surface detection system 400.
  • the main surface detection system 100 is configured to detect the opposite main surfaces of the product to be detected (for example, the first main surface 11' and the second main surface 12'); the middle frame detection system 200 is configured to detect the middle frame portion 13 of the product to be detected '(The middle frame portion 13' is located between the first main surface 11' and the second main surface 12'); the concave surface detection system 300 is configured to detect a groove provided on the main surface (for example: the first main surface 11'); The convex surface detection system 400 is configured to detect a plane projected on a main surface (for example, the second main surface 12').
  • the appearance of the mobile phone 1'and other products can be inspected comprehensively, whether it is the main surface of the product or the convex or concave Defects such as pinholes, impurities, different colors, bubbles, bumps, scratches, and bright spots can be found in some parts of the product, so as to realize the uniformity and standardization of product appearance inspection; at the same time, these inspection systems are integrated into the inspection equipment,
  • the conveying system 600 is used to convey between different detection systems, which improves the efficiency of product appearance detection.
  • the conveyor track 640 can be configured according to the actual production process requirements of the product, for example, it can be set as a linear conveyor track or other customized conveyor tracks.
  • the conveying track 640 is introduced as a linear type, and the conveying device 630 reciprocates along the linear conveying track 640.
  • the conveying track 640 can directly adopt a linear motion platform.
  • the direction parallel to the linear conveying track 640 is the X direction
  • the direction perpendicular to the linear conveying track 640 and the height direction is the Y direction
  • the height direction is the Z direction.
  • the loading and unloading fixtures include a loading fixture 610 and an unloading fixture 620.
  • the loading fixture 610 and the unloading fixture 620 are respectively located at both ends of the conveying track 640, and the inspection station 910 is located between the loading fixture 610 and the unloading fixture 620.
  • the loading fixture 610 and the unloading fixture 620 are respectively connected to the upstream and downstream stations of the appearance inspection equipment, thereby facilitating batch inspection of the mobile phone 1'to speed up the inspection speed.
  • the loading and unloading fixtures can also be the same fixture.
  • the loading and unloading fixtures place the mobile phone 1'to be tested on the conveyor 630, and then pass the inspection of each system in the inspection station 910, and then The conveying device 630 returns the completed detection mobile phone 1'to the loading and unloading fixture to complete the blanking.
  • the loading fixture 610 and the unloading fixture 620 have the same basic structure, and may include a first support 611 and a second support 612 located on both sides of the conveying track 640, a first support 611 and a second support 611. Both brackets 612 are provided with a clamp lifting cylinder 613 and a clamp horizontal cylinder 614. The cylinder of the clamp horizontal cylinder 614 is connected to the telescopic end of the clamp lifting cylinder 613. The telescopic ends of the two clamp horizontal cylinders 614 are arranged oppositely, and the two clamps are horizontal.
  • the telescopic ends of the air cylinder 614 are both provided with a clamping plate 615, and the two clamping plates 615 can be relatively close to or far away under the action of the two clamp horizontal air cylinders 614, so as to realize the clamping or loosening of the mobile phone 1'.
  • the transfer device 630 can be moved between the first bracket 611 and the second bracket 612.
  • the loading fixture 610 When the loading fixture 610 needs to place the mobile phone 1'on the conveying device 630, it is first lowered to the conveying device 630 by the fixture lifting cylinder 613, and then the clamping horizontal cylinder 614 moves the two splints 615 away from each other, and the mobile phone 1'is placed on the conveying device
  • the blanking fixture 620 when the blanking fixture 620 needs to clamp the mobile phone 1'on the conveyor 630, it first descends to the conveyor 630 by the fixture lifting cylinder 613, and then the fixture horizontal cylinder 614 makes the two clamping plates 615 close to each other until it reaches the mobile phone 1. 'The contact is completed and the clamping is completed, and the clamp lifting cylinder 613 is raised away from the conveying device 630.
  • the splint 615 includes a clamping portion 6151 configured to contact the side of the mobile phone 1', that is, the middle frame portion 13', and also includes a clamping portion 6151 configured to contact The first main surface 11' or the second main surface 12' of the mobile phone 1'is in contact with the bearing portion 6152, so that the clamped mobile phone 1'is similarly placed in a groove provided with a bottom surface, and the clamping stability is greatly improved .
  • the arrangement of the carrying portion 6152 does not affect the movement between the loading and unloading fixture and the conveying device 630.
  • the supporting parts 6152 on the splint 615 are arranged at intervals along the length of the clamping part 6151, and the middle part can be used for the transmission device 630 to contact the mobile phone 1'.
  • the main surface detection system 100 and the middle frame detection system 200 are provided along the conveying system 600.
  • the detection surfaces of the concave surface detection system 300 and the convex surface detection system 400 are all located on a plane of the same height.
  • the conveyor 630 is not required to set up and down.
  • the device meets the needs of the detection surface of different detection systems, and at the same time reduces the complexity of the transmission device 630.
  • the transmission device 630 in this embodiment only needs to drive the mobile phone 1'to move on the XY plane.
  • the conveying device 630 in this embodiment includes an X moving mechanism, a Y moving mechanism and an R Z rotating mechanism, wherein the free end of the R Z rotating mechanism is provided with a bearing member configured to carry the product to be inspected.
  • a vacuum chuck is used as the bearing member, and the vacuum chuck will not scratch the surface of the mobile phone 1'.
  • the delivery device 630 can be purchased directly, such as LPS-06C14-110 ⁇ 1050-G10-F06020 ⁇ F06030 of Linghou.
  • other models of the transmission device can also be selected, and this embodiment is only described as an example.
  • the X moving mechanism is configured to drive the product to be tested to move in the X direction; the Y moving mechanism is configured to drive the product to be tested to move in the Y direction; the R Z rotating mechanism is configured to drive The product to be tested rotates along the R Z direction.
  • the R Z direction refers to the direction of rotation around a rotation axis set along the Z direction.
  • the main surface detection system 100 includes a first light source 120 and a first imaging device 110.
  • the first light source 120 includes a first main light source 121 and a plurality of first side light sources 122.
  • the main light source 121 is configured to provide light perpendicular to the main surface of the product to be inspected;
  • the plurality of first side light sources 122 are configured to provide light that obliquely irradiates the main surface of the product to be inspected;
  • the first imaging device 110 is configured to be located at Detect directly above the main surface of the product.
  • the mobile phone 1' generally having a flat rectangular parallelepiped structure, there are four first side light sources 122, which are respectively arranged on the four sides of the mobile phone 1'.
  • the first main light source 121 is located directly above the mobile phone 1'and can be used to The first main surface 11' or the second main surface 12' is illuminated, and the first main surface 11' or the second main surface 12' of the mobile phone 1'is illuminated by multiple light sources.
  • the first imaging device 110 can be used for shooting.
  • the processing equipment determines whether there are foreign objects, pinholes, impurities, different colors, bubbles, unevenness, scratches, bright spots and other defects on the first main surface 11' or the second main surface 12'.
  • the first imaging device 110 is configured to photograph the main surface of the product to be inspected.
  • the first main light source 121 includes, for example, a bulb and a lamp shade
  • the first side light source 122 includes, for example, a bulb and a lamp shade.
  • the appearance inspection equipment includes a gantry 700.
  • the gantry 700 includes a first column 710 and a second column 720 located on both sides of the conveying track 640, and one of the first column 710 and the second column 720. Between the first cross beam 730 and the second cross beam 740, the first cross beam 730 and the second cross beam 740 are arranged along the Y direction, wherein the first cross beam 730 is higher than the second cross beam 740.
  • the main surface detection system 100 is used for installing the first light source 120 and the first mounting bracket of the first imaging device 110 to connect with the gantry 700.
  • the first mounting bracket includes a first adjusting plate 130 for installing the first imaging device 110, a first aperture plate 140 and a second adjusting plate 150 for installing the first main light source 121, and The side adjustment plate assembly 160 of the first side light source 122 is installed.
  • the first adjustment plate 130 is provided with a first elongated hole 131 whose length direction is parallel to the Z direction, so that the first imaging device 110 can adjust the height along the Z direction within a certain range, which is convenient for different sizes of The mobile phone 1'performs focusing.
  • the first orifice plate 140 is fixedly connected to the second beam 740, the second adjusting plate 150 is connected to the first main light source 121, and the second adjusting plate 150 is connected to the first orifice plate 140, and the first orifice plate 140 is provided with There are multiple sets of adjustment holes, the second adjustment plate 150 is selectively connected with any set of adjustment holes on the first orifice plate 140 through the bolt connection structure, so as to realize the adjustment of the first main light source 121 parallel to the Y direction; optionally, The second adjusting plate 150 is also provided with a second elongated hole 151 whose length direction is parallel to the Z direction. The second elongated hole 151 can be connected to the adjusting hole on the first orifice plate 140, so that the first main light source 121 can be in a certain range. Adjust the height along the Z direction inside.
  • the side adjusting plate assembly 160 includes a first side plate 161 and a second side plate 162 that are oppositely arranged, and a first connecting frame 165 and a second connecting frame 166 that are arranged oppositely.
  • the first side plate 161 , The first connecting frame 165, the second side plate 162 and the second connecting frame 166 are connected end to end to form a rectangle, wherein the middle part of the first side plate 161 and the second side plate 162 are respectively connected with the third side plate 163 and the first
  • the four side plates 164, the third side plate 163 and the fourth side plate 164 are respectively connected to the first post 710 and the second post 720 of the gantry 700 so that the side adjusting plate assembly 160 is fixedly connected to the gantry 700.
  • the third side plate 163 and the fourth side plate 164 have the same structure, and both have an L-shaped structure. Both the third side plate 163 and the fourth side plate 164 are provided with a first side plate whose length direction is parallel to the Z direction. Three long holes 1601 and a fourth long hole 1602 whose length direction is parallel to the Y direction.
  • the two first side light sources 122 are respectively connected to the third side plate 163 and the fourth side plate 164 through the first adapter.
  • the first adapter includes a first angle adjustment plate 167 that can be fixedly connected to the fourth elongated hole 1602. Referring to FIG.
  • the first angle adjustment plate 167 includes a first arc-shaped slot 1671, and a first side light source 122 rotates along the first arc-shaped slot 1671 to adjust the inclination angle, so as to realize the irradiation of mobile phones 1'of different sizes.
  • the first adapter further includes a first mounting block 169.
  • One side of the first mounting block 169 can be fixedly connected to the first side light source 122, and the other side can be connected to the first arc-shaped groove. 1671 is fixedly connected.
  • the first mounting block 169 is set as a non-standard part, which can be set according to the actual structure of the first side light source 122.
  • the setting of the first mounting block 169 can ensure that the first side light source 122 and the first angle can be adjusted
  • the stable installation of the plate 167 can also prevent the first side light source 122 from being damaged due to the misfit of the mounting structure when the first side light source 122 moves around the first arc-shaped slot 1671 during the angle adjustment process.
  • the other two first side light sources 122 are connected to the first side plate 161 and the second side plate 162 through the second adapter.
  • the first side plate 161 and the second side plate 162 have the same structure, and both are provided with a fifth elongated hole 1603 whose length direction is parallel to the X direction.
  • the second adapter includes a second angle adjustment plate 168, 9, the second angle adjustment plate 168 is provided with a second arc-shaped slot 1681 and a sixth elongated hole 1605 whose length direction is parallel to the Z direction.
  • the bolt connection structure can pass through the fifth elongated hole 1603 and the sixth elongated hole in sequence.
  • the elongated hole 1605 realizes the connection of the first side plate 161 with the second side plate 162 and the second angle adjustment plate 168.
  • the first side light source 122 can be rotated along the second arc-shaped slot 1681 to achieve the adjustment of the inclination angle. Irradiation on mobile phones 1'of different sizes.
  • the second adapter also includes a second mounting block 1610, wherein the second mounting block 1610 has the same function as the first mounting block 169, and can be set according to the actual structure of the first side light source 122 .
  • two first side light sources 122 are located between and opposite to the first side plate 161 and the second side plate 162, and the other two first side light sources 122 are respectively located on the third side plate 163 and the fourth side.
  • both ends of the two first side light sources 122 need to be fixed separately, in order to avoid the processing of the second mounting block 1610
  • the error causes the installation of the first side light source 122 not to meet the requirements
  • the second mounting block 1610 is provided with a seventh elongated hole 1606 to facilitate the adaptive adjustment of both ends of the first side light source 122 so that the installation of the first side light source 122 meets the requirements.
  • the middle portion of the first side plate 161 and the second side plate 162 is provided with a relief groove 1604, and the relief groove 1604 is provided to avoid the first side light source connected with the third side plate 163 and the fourth side plate 164
  • the angle adjustment 122 may interfere with the first side plate 161 and the second side plate 162.
  • the middle frame detection system 200 includes a second light source 220 and two second imaging devices 210.
  • the second light source 220 is an arc-shaped light source, and both ends of the arc-shaped light source are configured to be respectively located at The upper and lower sides of the product to be inspected; two second imaging devices 210 are configured to be respectively located on the upper and lower sides of the product to be inspected, and the two second imaging devices 210 are both tilted, and the lens of the second imaging device 210 Both ends are configured to face the product to be tested.
  • the second imaging device 210 is configured to photograph the middle frame portion 13' of the product to be inspected.
  • the second light source 220 includes, for example, a bulb and a lampshade.
  • the middle frame detection system 200 further includes a second mounting bracket 230, including a middle frame detection vertical plate 231.
  • the middle frame detection vertical plate 231 is provided with three installation positions along its height, and the first installation position in the middle is used for installation.
  • the second installation positions at both ends are respectively used to install two second imaging devices 210.
  • the first installation position is provided with a middle frame light source mounting plate 233, one end of the middle frame light source mounting plate 233 is connected to the second light source 220, and the other end is provided with multiple sets of waist holes 2331 along the Y direction. This facilitates the adjustment of the second light source 220 along the Y direction.
  • the second installation position is provided with an eighth elongated hole along the Z direction, which facilitates the height adjustment of the second imaging device 210 along the Z direction.
  • an angle adjustment platform 232 connected to the second imaging device 210 is provided on the second installation position, which facilitates adjustment of the angle of the second imaging device 210 to adjust for different models of mobile phones 1'.
  • the angle adjustment platform 232 can be purchased directly, such as MISUMI RPG85. In other embodiments, other models of the angle adjustment platform can also be selected, and this embodiment is only described as an example.
  • the concave surface detection system 300 includes a third light source 320 and a third imaging device 310, and the third light source 320 is configured to provide light perpendicular to the concave surface of the product to be detected;
  • the imaging device 310 is configured to vertically photograph the concave surface of the mobile phone 1 ′, which can be understood to be used to photograph the side walls and bottom walls of the groove.
  • the concave surface detection system 300 further includes a third mounting bracket 330.
  • the third mounting bracket 330 includes a concave surface detection vertical plate 331.
  • the concave surface detection vertical plate 331 is provided with two installation positions along its height direction.
  • the upper third installation position It is used to set the third imaging device 310, and the fourth installation position below is used to set the third light source 320.
  • the third installation position is provided with a third angle adjusting plate 332, the third angle adjusting plate 332 is connected with the third imaging device 310, and the third angle adjusting plate 332 is provided with a third arc-shaped groove 3321, and the third imaging device 310 can move along the third arc-shaped groove 3321 to vertically photograph the side wall and bottom wall of the groove.
  • the groove at the earpiece position of the mobile phone 1' is provided with a 30-degree chamfer, and the third imaging device 310 can be adjusted to be approximately perpendicular to the chamfered surface accordingly.
  • the third arc-shaped slot 3321 in the third angle adjusting plate 332 is close to a quarter arc, and when detecting the other sides of the groove, the carrying member that can rotate in the Rz direction on the conveyor 630 can be used. Rotate, and the mobile phone 1'to be detected can be moved at this time, without the detection components in the concave surface detection system 300 to move, which saves the space occupation of the appearance detection equipment and makes the equipment more compact.
  • the third light source 320 is similar to the first side light source 122, and is also provided with four to illuminate the groove at multiple angles.
  • the third light source 320 mainly detects grooves arranged on the first main surface 11', such as the groove at the earpiece.
  • the structure of the groove at the earpiece is much smaller than that of the first main surface 11'.
  • the distance between the four light sources of the three light sources 320 is relatively short, so as to illuminate the groove in a concentrated manner.
  • the fourth installation position is connected with a light source mounting frame 333, one end of the light source mounting frame 333 is provided with a rectangular hole 3331, and four third light sources 320 are distributed around the rectangular hole 3331, wherein the groove of the mobile phone 1' Moving under the rectangular hole 3331 under the action of the conveying device 630, four light sources can illuminate the groove.
  • the illumination angle of the third light source 320 can also be adjusted.
  • the four third light sources 320 are enclosed in a rectangle, and a connecting member 334 is provided between two adjacent third light sources 320. As shown in FIG.
  • the connecting member 334 includes two mutually perpendicular first The installation board 3341, the second installation board 3342 and the third installation board 3343, wherein the first installation board 3341 and the second installation board 3342 are respectively connected with adjacent light sources, and the first installation board 3341 and the second installation board 3342 are both provided with The fourth arc-shaped slot 3344 is used to adjust the angle of the two light sources.
  • the third mounting plate 3343 can be fixedly connected to the third mounting bracket 330 to realize the fixation of the third light source 320.
  • the third mounting position and the fourth mounting position are both provided with a horizontal adjustment component 335 that can be adjusted in the Y direction .
  • the horizontal adjustment component 335 can choose an intermediate plate arranged along the Y direction, and the intermediate plate can be provided with a ninth long hole arranged along the Y direction in the length direction.
  • the third light source 320 includes, for example, a bulb and a lampshade.
  • the focal length set by the first imaging device 110 is mainly configured In order to detect the first main surface 11' and the second main surface 12', the plane higher than the second main surface 12' cannot be accurately detected.
  • the convex surface detection system 400 mainly detects a plane higher than the second main surface 12'.
  • the convex surface detection system 400 includes a fourth light source 420, which is a coaxial light source,
  • the fourth light source 420 is configured to provide light illuminating the plane of the product to be inspected higher than the main surface; the lens of the fourth imaging device 410 is configured to face the plane of the product to be inspected higher than the main surface.
  • the coaxial light source provides more uniform illumination than traditional light sources, can highlight the uneven surface of the object, overcome the interference caused by surface reflection, and avoid the reflection of the object, thus improving the accuracy and reproducibility of machine vision.
  • the fourth imaging device 410 is configured to photograph a plane protruding from the main surface.
  • the fourth light source 420 includes, for example, a bulb and a lampshade.
  • the convex surface detection system 400 is disposed on the side of the gantry 700 away from the main surface detection system 100.
  • the convex surface detection system 400 may include a fourth mounting bracket 430, and the fourth mounting bracket 430 includes a second hole.
  • the second orifice plate 431 has the same structure as the first orifice plate 140 in the first mounting bracket.
  • the second orifice plate 431 is arranged on the second cross beam 740.
  • the two orifice plates 431 are connected, wherein the two ends of the third adapter 432 along the Z direction are respectively connected to the third adjusting plate 433 and the fourth adjusting plate 434, the third adjusting plate 433 is connected to the fourth imaging device 410, and the fourth adjusting plate 433 is connected to the fourth imaging device 410.
  • the board 434 is connected to the fourth light source 420, and the fourth imaging device 410 is located above the fourth light source 420.
  • the third adjusting plate 433 and the fourth adjusting plate 434 are respectively provided with a tenth elongated hole 4331 and an eleventh elongated hole 4341 along the Z direction, so that the fourth imaging device 410 and the fourth light source 420 are respectively arranged Adjust in the Z direction.
  • the appearance inspection device further includes a turning mechanism 500 configured to turn the product to be inspected.
  • the turning mechanism 500 can realize a 180-degree turn of the mobile phone 1', that is, when the first main surface 11 When'upward', the turning mechanism 500 can turn the mobile phone 1'so that the second main surface 12' faces upward.
  • the turning mechanism 500 can be arranged on the conveying device 630.
  • the appearance inspection equipment is separately provided with a turning station 920, and the turning station 920 is located at one end of the inspection station 910.
  • the turning mechanism 500 is arranged on the turning station 920.
  • the turning mechanism 500 includes a lifting cylinder 510, a rotating cylinder 520 and a clamping cylinder 530; the rotating cylinder 520 is connected to the telescopic end of the lifting cylinder 510; the housing of the clamping cylinder 530 and the rotating cylinder The telescopic end of the 520 is connected.
  • the setting of the turning mechanism 500 can set the detection system above the detection position, avoiding the setting of a corresponding detection system below the detection position, reducing the difficulty of the layout of the detection system; at the same time, the setting of the turning mechanism 500 makes a surface detection system available. The detection of the first main surface 11' and the second main surface 12' of the mobile phone 1'reduces the cost of the appearance inspection equipment.
  • the turning mechanism 500 is separately arranged on the turning station 920. Compared with setting the turning mechanism 500 on the conveying device 630, the former reduces the complexity of the conveying device 630, and one of the conveying device 630 and the turning mechanism 500 Damage does not affect the normal use of the other one.
  • a loading fixture 610 a main surface detection system 100, a convex surface detection system 400, a middle frame detection system 200, a concave surface detection system 300, and a turning mechanism 500 are sequentially arranged along the linear conveying track 640 direction.
  • the conveyor 630 sequentially sends the mobile phone 1'to the main surface inspection system 100, the middle frame inspection system 200, and the concave surface inspection system 300 for inspection, and then arrives
  • the turning mechanism 500 turns the second main surface 12' of the mobile phone 1'to the top
  • the transfer device 630 sends the mobile phone 1'to the convex surface detection system 400 and the main surface detection system 100 in turn for detection
  • the transfer device 630 transfers the mobile phone 1' It is transferred to the blanking fixture 620, and the mobile phone 1'is sent out of the product appearance inspection equipment by the blanking fixture 620.
  • the position of each detection system in the detection station 910 can be set arbitrarily.
  • the appearance inspection equipment includes a housing 800, a loading fixture 610, a main surface inspection system 100, a convex surface inspection system 400, a middle frame inspection system 200, a concave surface inspection system 300, and a turning mechanism 500 are all located in the box to avoid external dust Etc. cause interference to the mobile phone 1'detection.
  • the product appearance inspection device includes a purging device configured to purify dust on the surface of the product to be inspected.
  • the purging device in the box cleans the mobile phone 1'to prevent dust on the surface of the mobile phone 1'from affecting the detection result.
  • the purging device may specifically include a fan.
  • this embodiment is only an exemplary description of the appearance detection device through the mobile phone 1', and it can also be used for appearance detection of a tablet computer and the like. Adjust the size of the parts in the equipment accordingly.
  • the appearance inspection equipment also includes a positioning detection system, so that the conveying device 630 can move the product to be inspected to the corresponding station for detection.
  • This positioning detection system belongs to the relevant technology in the field and is not an improvement of this embodiment. I will not repeat them here.
  • This embodiment discloses a product appearance inspection method, which is used to perform appearance inspection on a product to be inspected by using the above-mentioned appearance inspection equipment, and includes the following steps:
  • the appearance inspection method of this embodiment detects the other features of the main surface on one side and the other features of the main surface on one side, and then detects the other features on the other side of the main surface and the other side of the main surface, avoiding repeated inspections of the product during the inspection process.
  • the flipping operation realizes high-efficiency inspection of product appearance.
  • step 1) or step 3) further includes detecting the middle frame part of the product to be inspected at the third inspection station. In some embodiments, before step 1), it further includes purging the product to be tested.
  • the mobile phone 1' is also used as the product to be inspected
  • the appearance inspection device in the first embodiment is used to implement the appearance inspection method, which may specifically include the following steps:
  • the loading clamp 610 reaches the bearing part of the conveyor 630 under the action of the clamp lifting cylinder 613, and then the clamp horizontal cylinder 614 moves the two clamping plates 615 away from each other until they are completely separated from the mobile phone 1';
  • the transmission device 630 moves the mobile phone 1'to the inspection station where the main surface inspection system 100 is located.
  • the main surface inspection system 100 performs the inspection on the first main surface 11' of the mobile phone 1'. Detection
  • the transmission device 630 moves the mobile phone 1'to the inspection station where the concave surface detection system 300 is located.
  • the concave surface detection system 300 detects the earpiece groove provided on the side of the first main surface 11', and mainly focuses on the earpiece groove Side wall and bottom wall are tested;
  • the turning mechanism 500 turns the mobile phone 1'so that the second main surface 12' faces upward;
  • the transfer device 630 moves the mobile phone 1'to the inspection station where the convex surface detection system 400 is located.
  • the convex surface detection system 400 detects the camera arranged on the side of the second main surface 12', and the main focus is on the camera that is higher than the second main surface 12.
  • ′ Plane for detection, and the plane is parallel to the second main surface 12′;
  • the transfer device 630 moves the mobile phone 1'again to the inspection station where the main surface inspection system 100 is located, and the main surface inspection system 100 detects the second main surface 12' of the mobile phone 1';
  • the conveying device 630 moves the mobile phone 1'to the blanking fixture 620, and the clamping lifting cylinder 613 in the blanking fixture 620 descends, and then the clamping horizontal cylinder 614 moves the two clamping plates 615 close to each other until the clamping of the mobile phone 1'is completed, and the fixture is lifted
  • the cylinder 613 rises to facilitate the mobile phone 1'that has completed the appearance inspection to enter the next production line.
  • the above steps also include the middle frame detection step S9 of the mobile phone 1'.
  • the transmission device 630 moves the mobile phone 1'to the middle frame detection station to detect the middle frame portion 13' of the mobile phone 1'. Since the mobile phone 1'is usually a rectangular parallelepiped, and the first main surface 11' is a rectangle, the middle frame portion 13' includes two oppositely arranged long sides and two oppositely arranged short sides, the Y moving mechanism of the transmission device 630 and the Rz rotation The two mechanisms are linked, so that the second light source 220 and the second imaging device 210 of the middle frame detection system 200 can detect both the long side middle frame and the short side middle frame.
  • Step S9 can be located in any step after step S2 and before step S8.
  • step S9 may be located after step S3 or before step S6.
  • step S5 also includes that the transfer device 630 moves the mobile phone 1'to the turning station 920, and the turning mechanism 500 turns the mobile phone 1'to make the second main surface 12' Face up.
  • this embodiment also includes step S10, in which the purging device purges the product to be detected.
  • the step S10 can be located after the step S1 and before the step S2, or it can run through the entire detection process.
  • the appearance inspection method in this embodiment is not only suitable for the appearance inspection of the mobile phone 1', but also can inspect many products such as tablet computers, displays, and e-readers.

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Abstract

一种外观检测设备及待检测产品（1'）的外观检测方法，外观检测设备包括输送系统（600），输送系统（600）包括输送轨道（640），以及位于输送轨道（640）上的上下料夹具（610、620）和传送装置（630）；沿输送轨道（640）设置有：主表面检测系统（100）、中框检测系统（200）、凹面检测系统（300）、凸面检测系统（400）；主表面检测系统（100）配置为检测待检测产品（1'）的主表面（11'、12'）；中框检测系统（200）配置为检测位于待检测产品（1'）的中框部分（13'）；凹面检测系统（300）配置为检测设置于主表面（11'、12'）的凹槽；凸面检测系统（400）配置为检测凸设于主表面（11'、12'）的平面。

Description

一种外观检测设备及待检测产品的外观检测方法
本公开要求在2019年03月26日提交中国专利局、申请号为201910234757.X的中国专利申请的优先权，以上申请的全部内容通过引用结合在本公开中。
技术领域
本文涉及外观检测技术领域，例如涉及一种外观检测设备及待检测产品的外观检测方法。
背景技术
随着物质生活水平的提高，消费者对产品外观的要求也不断提高。尤其对于电子产品，如手机、平板电脑等智能终端产品，加工工艺精度较高，如果产品外观存在异物，针孔、杂质、异色、气泡、凹凸、划伤、亮点等缺陷时，将大大影响该产品的质量指标及美观度，因此有必要在产品出厂前对其进行一个系统的缺陷检测。
目前多数产品外观检测主要依靠人工进行目检，容易出现漏检以及检测不稳定等情况，无法确保出厂产品的外观质量，同时人工检测劳动强度大且效率低下。
为此，亟需提供一种外观检测设备及外观检测方法以解决上述问题。
发明内容
本文提供了一种外观检测设备，可以实现产品外观检测的统一化、标准化，以及高效率检测。
本文还提供一种待检测产品的外观检测方法，可以实现产品外观的高效率检测。
本文提供了一种外观检测设备，包括：
输送系统，包括输送轨道，以及位于所述输送轨道上的上下料夹具和传送装置；
沿所述输送轨道设置有：
主表面检测系统，配置为检测待检测产品的主表面；
中框检测系统，配置为检测位于所述待检测产品的中框部分；
凹面检测系统，配置为检测设置于所述主表面的凹槽；
凸面检测系统，配置为检测凸设于所述主表面和的平面。
本文还提出了一种待检测产品的外观检测方法，用于采用上述外观检测设备对待检测产品进行外观检测，所述外观检测设备还包括检测工位，所述待检测产品的外观检测方法包括如下步骤：
在第一检测工位进行第一主表面检测，在第二检测工位对所述第一主表面上的凹槽和凸设的平面中至少之一进行检测；
翻转所述待检测产品；
在所述第一检测工位进行第二主表面检测，在所述第二检测工位对所述第二主表面的凹槽和凸设的平面中至少之一进行检测，其中，所述待检测产品的主表面包括所述第一主表面和所述第二主表面，所述检测工位包括所述第一检测工位和所述第二检测工位。
附图说明
图1是本发明实施例中的一种外观检测设备的第一视角的结构示意图；
图2是本发明实施例中的一种外观检测设备的第二视角的结构示意图
图3是本发明实施例中的一种输送系统的结构示意图；
图4是本发明实施例中的一种上料夹具的结构示意图；
图5是本发明实施例中的一种夹板的结构示意图；
图6是本发明实施例中的一种安装于龙门架的主表面检测系统的结构示意图；
图7是本发明实施例中的一种侧调节板组件的结构示意图；
图8是本发明实施例中的一种第一角度调节板的结构示意图；
图9是本发明实施例中的一种第二角度调节板的结构示意图；
图10是本发明实施例中的一种中框检测系统的结构示意图；
图11是本发明实施例中的一种凹面检测系统的第一视角的结构示意图；
图12是本发明实施例中的一种凹面检测系统的第二视角的结构示意图；
图13是本发明实施例中的一种连接件的结构示意图；
图14是本发明实施例中的一种安装于龙门架的凸面检测系统的结构示意图；
图15是图14中A处放大示意图；
图16是本发明实施例中的一种翻转机构的结构示意图；
图17是本发明实施例中的一种外观检测设备置于壳体内的结构示意图。
图中：
1′、手机；11′、第一主表面；12′、第二主表面；13′、中框部分；
100、主表面检测系统；110、第一成像设备；120、第一光源；121、第一主光源；122、第一侧光源；130、第一调节板；131、第一长条孔；140、第一孔板；150、第二调节板；151、第二长条孔；160、侧调节板组件；1601、第三长条孔；1602、第四长条孔；1603、第五长条孔；1604、让位槽；1605、第六长条孔；1606、第七长条孔；161、第一侧板；162、第二侧板；163、第三侧板；164、第四侧板；165、第一连接架；166、第二连接架；167、第一角度调节板；1671、第一弧形槽；168、第二角度调节板；1681、第二弧形槽；169、第一安装块；1610、第二安装块；′
200、中框检测系统；210、第二成像设备；220、第二光源；230、第二安装支架；231、中框检测立板；232、角度调节平台；233、中框光源安装板；2331、腰型孔；
300、凹面检测系统；310、第三成像设备；320、第三光源；330、第三安装支架；331、凹面检测立板；332、第三角度调节板；3321、第三弧形槽；333、光源安装架；3331、矩形孔；334、连接件；3341、第一安装板；3342、第二安装板；3343、第三安装板；3344、第四弧形槽；335、水平调节组件；
400、凸面检测系统；410、第四成像设备；420、第四光源；430、第四安装支架；431、第二孔板；432、第三转接件；433、第三调节板；4331、第十长条孔；434、第四调节板；4341、第十一长条孔；
500、翻转机构；510、升降气缸；520、旋转气缸；530、夹持气缸；
600、输送系统；
610、上料夹具；611、第一支架；612、第二支架；613、夹具升降气缸；614、夹具水平气缸；615、夹板；6151、夹持部；6152、承载部；
620、下料夹具；630、传送装置；640、输送轨道；
700、龙门架；710、第一立柱；720、第二立柱；730、第一横梁；740、第二横梁；
800、壳体；
910、检测工位；911、第一检测工位；912、第二检测工位；920、翻转工 位。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本文一部分实施例，而不是全部的实施例。通常在此处附图中描述和示出的本发明实施例的组件可以以各种不同的配置来布置和设计。
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步定义和解释。
在本文的描述中，需要说明的是，术语“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，或者是该文产品使用时惯常摆放的方位或位置关系，仅是为了便于描述本文和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本文的限制。此外，术语“第一”、“第二”、“第三”等仅用于区分描述，而不能理解为指示或暗示相对重要性。在本文的描述中，除非另有说明，“多个”的含义是两个或两个以上。
在本文的描述中，还需要说明的是，除非另有明确的规定和限定，术语“设置”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本文中的具体含义。
在本文中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
下面详细描述本文的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本文，而不能理解为对本文的限制。
实施例一
如图1、2和16所示，本实施例提供一种外观检测设备，该外观检测设备主要用于对手机1′、平板电脑等外观进行检测。以手机1′为例，手机1′的外观通常可包括主表面(所述主表面包括相对设置的第一主表面11′和第二主表面12′)，以及位于第一主表面11′和第二主表面12′之间的中框部分13′，另外还包括凹设于第一主表面11′上的凹槽，以及凸设于第二主表面12′上的平面，其中凹槽可用于设置听筒部件，凸设于第二主表面12′上的平面可为手机1′后置摄像头凸出手机壳体的平面。当然，于其他产品中，凹槽可设置于第二主表面12′，凸设的平面可设置于第一主表面11′，或者第一主表面11′和第二主表面12′均设置有凹槽和凸设有平面。本实施例主要针对待检测产品为手机1′进行进一步介绍。
外观检测设备包括输送系统600和检测工位910，其中输送系统600包括输送轨道640，以及位于输送轨道640上的上下料夹具和传送装置630；检测工位910沿输送轨道640设置有主表面检测系统100、中框检测系统200、凹面检测系统300、凸面检测系统400。主表面检测系统100配置为检测待检测产品相对设置的主表面(比如：第一主表面11′和第二主表面12′)；中框检测系统200配置为检测待检测产品的中框部分13′(中框部分13′位于第一主表面11′和第二主表面12′之间)；凹面检测系统300配置为检测设置于主表面(比如：第一主表面11′)的凹槽；凸面检测系统400配置为检测凸设于主表面(比如：第二主表面12′)的平面。通过设置主表面检测系统100、中框检测系统200、凹面检测系统300、凸面检测系统400，可以对手机1′等产品外观进行较全面的检测，无论是产品的主表面还是凸设或凹设的部分存在异物，针孔、杂质、异色、气泡、凹凸、划伤、亮点等缺陷，均能被发现，实现产品外观检测的统一化、标准化；同时将这些检测系统集成到检测设备中，且通过输送系统600在不同检测系统之间进行输送，提高了产品外观检测的效率。
在一些实施例中，输送轨道640可根据产品实际生产工艺需要设置其结构，如可设置为直线型输送轨道或其他定制的输送轨道等。本实施例中以输送轨道640为直线型进行介绍，传送装置630沿直线型输送轨道640进行往复运动。其中输送轨道640可直接采用直线运动平台。
为了下文叙述方便，设定平行于直线型输送轨道640的方向为X方向，垂直于直线型输送轨道640且垂直于高度方向为Y方向，高度方向为Z方向。
可选地，如图3所示，本实施例中，上下料夹具包括上料夹具610和下料夹具620，上料夹具610和下料夹具620分别位于输送轨道640的两端，检测工位910位于上料夹具610和下料夹具620之间。如此设置，通过上料夹具610和下料夹具620分别与外观检测设备的上下游工位连接，从而便于手机1′进行批量检测以加快检测速度。当然，于其他实施例中，上下料夹具也可以为同一夹具，上下料夹具将待检测的手机1′放置于传送装置630上，然后经过检测工位910中每个系统的检测后，再由传送装置630将完成检测手机1′送回至上下料夹具完成下料。
在一些实施例中，如图4所示，上料夹具610和下料夹具620基本结构相同，可包括位于输送轨道640两侧的第一支架611和第二支架612，第一支架611和第二支架612均设置有夹具升降气缸613和夹具水平气缸614，夹具水平气缸614的缸体与夹具升降气缸613的伸缩端连接，两个夹具水平气缸614的伸缩端相对设置，且两个夹具水平气缸614的伸缩端均设置有夹板615，两个夹板615可在两个夹具水平气缸614的作用下实现相对靠近或远离，从而实现对手机1′的夹持或放松。其中传送装置630可移动至第一支架611和第二支架612之间。当上料夹具610需要将手机1′放置于传送装置630时，先通过夹具升降气缸613下降至传送装置630，然后夹具水平气缸614使两个夹板615相互远离，手机1′被放置于传送装置630上；同理，当下料夹具620需要将传送装置630上手机1′夹起，先通过夹具升降气缸613下降至传送装置630，然后夹具水平气缸614使两个夹板615相互靠近直到与手机1′接触完成夹持，再使夹具升降气缸613上升远离传送装置630。可选地，如图5所示，为了保证夹持手机1′的稳定性，夹板615包括配置为与手机1′侧面，即中框部分13′接触的夹持部6151，还包括配置为与手机1′的第一主表面11′或第二主表面12′接触的承载部6152，使得被夹持的手机1′类似放于一个设置有底面的凹槽中，夹持的稳定性大大提高。可以理解的是，承载部6152的设置不影响上下料夹具与传送装置630之间的运动。其中夹板615上的承载部6152沿夹持部6151的长度方向间隔设置，中间部分可用于传送装置630与手机1′接触。
可选地，为了避免检测过程中，传送装置630需要不断地将手机1′沿Z向进行上下调节，本实施例中，沿输送系统600设置有的主表面检测系统100、中框检测系统200、凹面检测系统300、凸面检测系统400的检测面均位于同一高度的平面上，通过将检测工位910上的检测系统每个检测面均设置为位于同一 高度，省去了传送装置630设置升降装置以适应不同检测系统的检测面的必要，同时降低了传送装置630的复杂程度。本实施例中的传送装置630仅需带动手机1′进行XY平面上的移动即可。在一些实施例中，本实施例中传送装置630包括X移动机构、Y移动机构和R Z旋转机构，其中R Z旋转机构的自由端设置有配置为承载待检测产品的承载部件。可选地，承载部件选用真空吸盘，真空吸盘不会对手机1′表面进行划伤。其中传送装置630可直接购买，如灵猴的LPS-06C14-110×1050-G10-F06020×F06030。于其他实施例中，传送装置还可以选用其他型号，本实施例在此仅作示例性介绍。
需要说明的是，所述X移动机构配置为带动所述待检测产品沿X方向移动；所述Y移动机构配置为带动所述待检测产品沿Y方向移动；所述R Z旋转机构配置为带动所述待检测产品沿R Z方向转动。其中，所述R Z方向是指，绕沿Z方向设置的转动轴转动的转动方向。
在一些实施例中，如图6所示，主表面检测系统100包括第一光源120和第一成像设备110，第一光源120包括第一主光源121和多个第一侧光源122，第一主光源121配置为提供垂直照射于待检测产品的主表面的光；多个第一侧光源122配置为提供倾斜照射于待检测产品的主表面的光；第一成像设备110，配置为位于待检测产品主表面的正上方。针对手机1′通常为扁平的长方体结构，第一侧光源122设置有四个，分别设置于手机1′的四个侧面，第一主光源121位于手机1′正上方，能对手机1′的第一主表面11′或第二主表面12′进行照射，通过多个光源对手机1′的第一主表面11′或第二主表面12′进行照射，第一成像设备110进行拍摄后可通过处理设备判断出第一主表面11′或第二主表面12′是否存在异物，针孔、杂质、异色、气泡、凹凸、划伤、亮点等缺陷。
需要说明的是，所述第一成像设备110配置为拍摄所述待检测产品的主表面。所述第一主光源121例如包括灯泡和灯罩，所述第一侧光源122例如包括灯泡和灯罩。
可选地，再次参照图6，外观检测设备包括龙门架700，龙门架700包括位于输送轨道640两侧的第一立柱710和第二立柱720，以及位于第一立柱710和第二立柱720之间的第一横梁730和第二横梁740，第一横梁730和第二横梁740沿Y方向设置，其中第一横梁730高于第二横梁740。其中主表面检测系统100用于安装第一光源120和第一成像设备110的第一安装支架与龙门架700连接。在一些实施例中，第一安装支架包括用于安装第一成像设备110的第一调 节板130、用于安装第一主光源121的第一孔板140和第二调节板150、以及用于安装第一侧光源122的侧调节板组件160。
在一些实施例中，第一调节板130设置有长度方向平行于Z方向的第一长条孔131，使得第一成像设备110在一定范围内进行沿Z向的高度调节，便于针对不同尺寸的手机1′进行调焦。
第一孔板140与第二横梁740固定连接，第二调节板150与第一主光源121连接，且第二调节板150与第一孔板140连接，第一孔板140沿Y方向设置有多组调节孔，第二调节板150通过将螺栓连接结构选择性与第一孔板140上的任意一组调节孔连接，实现第一主光源121沿平行于Y方向的调节；可选地，第二调节板150也设置有长度方向平行于Z方向的第二长条孔151，第二长条孔151能与第一孔板140上的调节孔连接，便于第一主光源121在一定范围内进行沿Z向的高度调节。
如图7-9所示，侧调节板组件160包括相对设置的第一侧板161和第二侧板162，以及相对设置的第一连接架165和第二连接架166，第一侧板161、第一连接架165、第二侧板162和第二连接架166依次首尾相连围成矩形，其中第一侧板161和第二侧板162的中间部分分别连接有第三侧板163和第四侧板164，第三侧板163和第四侧板164分别与龙门架700的第一立柱710和第二立柱720连接，以使侧调节板组件160固定连接于龙门架700上。在一些实施例中，第三侧板163和第四侧板164的结构相同，均呈L形结构，第三侧板163和第四侧板164上均设置有长度方向平行于Z方向的第三长条孔1601以及长度方向平行于Y方向的第四长条孔1602。两个第一侧光源122分别通过第一转接件与第三侧板163和第四侧板164连接。可选地，第一转接件包括能与第四长条孔1602固定连接的第一角度调节板167，参照图8，第一角度调节板167包括第一弧形槽1671，第一侧光源122沿第一弧形槽1671转动可实现倾斜角度的调节，从而实现对不同尺寸手机1′的照射。可选地，再次参照图7，第一转接件还包括第一安装块169，第一安装块169的一侧能与第一侧光源122固定连接，另一侧能与第一弧形槽1671固定连接，第一安装块169的设置为非标件，可根据第一侧光源122的实际结构进行设置，其中第一安装块169的设置既可以确保第一侧光源122与第一角度调节板167的稳固安装，还可以避免第一侧光源122在调整角度过程中绕第一弧形槽1671移动时由于安装结构的不适配导致第一侧光源122受损的现象发生。另外两个第一侧光源122通过第二转接件实现与第一侧板 161和第二侧板162的连接。在一些实施例中，第一侧板161和第二侧板162结构相同，均设置有长度方向平行于X方向的第五长条孔1603，第二转接件包括第二角度调节板168，参照图9，第二角度调节板168上设置有第二弧形槽1681以及长度方向平行于Z方向的第六长条孔1605，螺栓连接结构可依次穿过第五长条孔1603和第六长条孔1605实现第一侧板161与第二侧板162和第二角度调节板168的连接，第一侧光源122可通过沿第二弧形槽1681转动以实现倾斜角度的调节，从而实现对不同尺寸手机1′的照射。其中，再次参照图7，第二转接件还包括第二安装块1610，其中第二安装块1610的作用与第一安装块169作用相同，且均可根据第一侧光源122实际结构进行设置。在一些实施例中，两个第一侧光源122位于第一侧板161和第二侧板162之间且相对设置，另两个第一侧光源122分别位于第三侧板163和第四侧板164上。由于其中两个第一侧光源122设置于第一侧板161和第二侧板162之间，这两个第一侧光源122的两端需要分别进行固定，为了避免第二安装块1610的加工误差导致第一侧光源122安装不符合要求，第二安装块1610设置有第七长条孔1606，便于第一侧光源122两端能够适应性调节，使得第一侧光源122的安装符合要求。可选地，第一侧板161和第二侧板162的中间部分设置有让位槽1604，让位槽1604的设置避免与第三侧板163和第四侧板164连接的第一侧光源122进行角度调节时可能与第一侧板161和第二侧板162发生干涉。
在一些实施例中，如图10所示，中框检测系统200包括第二光源220和两个第二成像设备210，第二光源220为弧形光源，弧形光源的两端配置为分别位于待检测产品的上侧和下侧；两个第二成像设备210配置为分别位于待检测产品的上侧和下侧，两个第二成像设备210均倾斜设置，其中第二成像设备210的镜头端均配置为朝向待检测产品。
需要说明的是，所述第二成像设备210均配置为拍摄所述待检测产品的中框部分13′。所述第二光源220例如包括灯泡和灯罩。
可选地，中框检测系统200还包括第二安装支架230，包括中框检测立板231，中框检测立板231沿其高度方向设置有三个安装位，中间的第一安装位用于安装第二光源220，两端的第二安装位分别用于安装两个第二成像设备210。在一些实施例中，第一安装位设置有中框光源安装板233，中框光源安装板233的一端与第二光源220连接，另一端沿平行于Y方向设置有多组腰型孔2331，便于第二光源220在沿Y方向上的调节。第二安装位设置有沿Z方向设置的第 八长条孔，便于第二成像设备210沿Z方向上进行高度调节。并且第二安装位上设置有与第二成像设备210连接的角度调节平台232，便于调整第二成像设备210的角度，以便针对不同型号手机1′进行调节。其中角度调节平台232可直接购买，如米思米RPG85。于其他实施例中，角度调节平台还可以选用其他型号，本实施例在此仅作示例性介绍。
在一些实施例中，如图11和12所示，凹面检测系统300包括第三光源320、第三成像设备310，第三光源320配置为提供垂直照射于待检测产品的凹面的光；第三成像设备310配置为垂直拍摄手机1′的凹面，可理解为用于拍摄凹槽的侧壁和底壁。
可选地，凹面检测系统300还包括第三安装支架330，第三安装支架330包括凹面检测立板331，凹面检测立板331沿其高度方向设置有两个安装位，上方的第三安装位用于设置第三成像设备310，下方的第四安装位用于设置第三光源320。可选地，第三安装位设置有第三角度调节板332，第三角度调节板332与第三成像设备310连接，第三角度调节板332设置有第三弧形槽3321，第三成像设备310可沿第三弧形槽3321移动以垂直拍摄凹槽的侧壁和底壁。如手机1′听筒位置的凹槽设置有30度倒角，相应地将第三成像设备310调整至大致与倒角面垂直即可。于本实施例中，第三角度调节板332中第三弧形槽3321接近四分之一圆弧，当对凹槽其他侧进行检测时可依靠传送装置630上能进行Rz方向转动的承载部件进行转动，此时待检测手机1′移动即可，无需凹面检测系统300中的检测部件进行移动，节省了外观检测设备的空间占用，使得该设备结构更加紧凑。另外，可选地，第三光源320类似第一侧光源122，也设置有四个，以对凹槽进行多角度照射。其中第三光源320主要针对设置于第一主表面11′上的凹槽进行检测，如听筒处的凹槽，听筒处的凹槽的结构相对于第一主表面11′小很多，为此第三光源320中四个光源之间的距离较近，以对凹槽处进行集中照射。在一些实施例中，第四安装位连接有光源安装架333，光源安装架333的一端设置有矩形孔3331，四个第三光源320分布于矩形孔3331周围，其中手机1′的凹槽可在传送装置630的作用下移动至矩形孔3331下方，四个光源可对凹槽进行照射。并且，为了更好的适应不同型号手机1′的检测，第三光源320的照射角度也均可调节。在一些实施例中，四个第三光源320围成矩形，其中相邻两个第三光源320之间设置有连接件334，如图13所示，连接件334包括两两相互垂直的第一安装板3341、第二安装板3342和第三安装板3343，其中第一 安装板3341和第二安装板3342分别与相邻光源连接，且第一安装板3341和第二安装板3342均设置有第四弧形槽3344，以调节两个光源的角度。第三安装板3343能与第三安装支架330固定连接，以实现第三光源320的固定，可选地，第三安装位和第四安装位均设置有能沿Y方向调节的水平调节组件335。其中水平调节组件335可选择沿Y方向设置的中间板，其中中间板上可以设置长度方向沿Y方向设置的第九长条孔。
需要说明的是，所述第三光源320例如包括灯泡和灯罩。
在一些实施例中，由于凸设于手机1′的第二主表面12′的摄像头表面高于第二主表面12′，在主表面检测系统100中，第一成像设备110设置的焦距主要配置为检测第一主表面11′和第二主表面12′，对于高于第二主表面12′的平面无法进行精确地检测。可选地，如图14和15所示，凸面检测系统400主要对高于第二主表面12′的平面进行检测，凸面检测系统400包括第四光源420，第四光源420为同轴光源，第四光源420配置为提供照射待检测产品高于主表面的平面的光；第四成像设备410的镜头配置为朝向待检测产品高于主表面的平面。同轴光源提供了比传统光源更均匀的照明，能够凸显物体表面不平整，克服表面反光造成的干扰，同时避免物体的反光，因此提高了机器视觉的准确性和重现性。
需要说明的是，所述第四成像设备410配置为拍摄凸设于所述主表面的平面。所述第四光源420例如包括灯泡和灯罩。
可选地，凸面检测系统400设置于龙门架700远离主表面检测系统100的一侧，在一些实施例中，凸面检测系统400可包括第四安装支架430，第四安装支架430包括第二孔板431和第三转接件432，第二孔板431与第一安装支架中第一孔板140结构相同，第二孔板431设置于第二横梁740上，第三转接件432与第二孔板431连接，其中第三转接件432沿Z方向的两端分别连接有第三调节板433和第四调节板434，第三调节板433与第四成像设备410连接，第四调节板434与第四光源420连接，并且第四成像设备410位于第四光源420的上方。在一些实施例中，第三调节板433和第四调节板434分别沿Z方向设置第十长条孔4331和第十一长条孔4341，便于第四成像设备410和第四光源420分别在Z方向上调节。
在一些实施例中，如图16所示，外观检测设备还包括配置为对待检测产品进行翻转的翻转机构500，翻转机构500可实现对手机1′进行180度翻转，即当 第一主表面11′向上时，翻转机构500可将手机1′进行翻转，使第二主表面12′向上。其中翻转机构500可设置于传送装置630上。于本实施例中，外观检测设备单独设置了一个翻转工位920，翻转工位920位于检测工位910的一端。翻转机构500设置于翻转工位920上，翻转机构500包括升降气缸510、旋转气缸520和夹持气缸530；旋转气缸520与升降气缸510的伸缩端连接；夹持气缸530的壳体与旋转气缸520的伸缩端连接。其中，翻转机构500的设置可以将检测系统均设置于检测位上方，避免了在检测位下方设置相应的检测系统，降低了检测系统的布置难度；同时翻转机构500的设置使得一个表面检测系统可对手机1′的第一主表面11′和第二主表面12′进行检测，降低了外观检测设备的成本。另外将翻转机构500单独设置于翻转工位920上，相比于将翻转机构500设置于传送装置630上，前者降低了传送装置630的复杂程度，而且传送装置630和翻转机构500其中之一发生损坏不影响其中另一个的正常使用。
本实施例中，沿直线型输送轨道640方向依次设置有上料夹具610、主表面检测系统100、凸面检测系统400、中框检测系统200、凹面检测系统300和翻转机构500。具体使用时，手机1′经过上料组件上料到达传送装置630上，传送装置630依次将手机1′送至主表面检测系统100、中框检测系统200、凹面检测系统300进行检测，然后到达翻转机构500将手机1′第二主表面12′翻转至上方，然后传送装置630将手机1′依次送至凸面检测系统400和主表面检测系统100进行检测，再由传送装置630将手机1′传送至下料夹具620，由下料夹具620将手机1′送出产品外观检测设备。于其他实施例中，检测工位910中的各个检测系统的位置可任意设置。
可选地，外观检测设备包括壳体800，上料夹具610、主表面检测系统100、凸面检测系统400、中框检测系统200、凹面检测系统300和翻转机构500均位于箱体内，避免外界灰尘等对手机1′检测造成干扰。在一些实施例中，产品外观检测设备包括吹扫设备，所述吹扫设备配置为对待检测产品表面灰尘进行吹扫。可选地，在手机1′进入上料夹具610时箱体内的吹扫设备对手机1′进行吹扫，避免手机1′表面灰尘影响检测结果。
在具体实现中，所述吹扫设备具体可以包括风机。
当然本实施例仅是通过手机1′对外观检测设备进行示例性说明，其还可以用于平板电脑等的外观检测。相应的调整设备中零部件大小即可。
需要声明的是，外观检测设备中还包括定位检测系统，以便传送装置630 将待检测产品移动至相应工位进行检测，此定位检测系统属于本领域相关技术，其并非本实施例改进之处，在此不再赘述。
实施例二
本实施例公开一种产品外观检测方法，用于采用上述外观检测设备对待检测产品进行外观检测，包括如下步骤：
1)在第一检测工位911进行第一主表面检测，在第二检测工位912对所述第一主表面上的凹槽和凸设的平面中至少之一进行检测；
2)翻转所述待检测产品；
3)在所述第一检测工位911进行第二主表面检测，在所述第二检测工位912对所述第二主表面的凹槽和凸设的平面中至少之一进行检测。
本实施例的外观检测方法通过对一侧主表面及一侧主表面其他特征进行检测完成后，再进行另一侧主表面及另一侧主表面其他特征的检测，避免了检测过程反复对产品进行翻转的操作，实现了产品外观的高效率检测。
作为可选，步骤1)或步骤3)中还包括在第三检测工位对待检测产品的中框部分进行检测。在一些实施例中，步骤1)之前还包括对所述待检测产品进行吹扫。
本实施例中还以手机1′为待检测产品进行介绍，且采用实施例一中的外观检测设备实施外观检测方法，具体可包括如下步骤：
S1、将手机1′放置于上料夹具610上；
S2、上料夹具610在夹具升降气缸613的作用下到达传送装置630的承载部件处，然后夹具水平气缸614使两个夹板615相互远离，直至完全脱离手机1′；
S3、传送装置630将手机1′移动至主表面检测系统100所在的检测工位，当第一主表面11′朝上时，主表面检测系统100对手机1′的第一主表面11′进行检测；
S4、传送装置630将手机1′移动至凹面检测系统300所在的检测工位，凹面检测系统300对设置于第一主表面11′所在侧的听筒凹槽进行检测，其中主要对听筒凹槽的侧壁和底壁进行检测；
S5、翻转机构500对手机1′进行翻转使第二主表面12′朝上；
S6、传送装置630将手机1′移动至凸面检测系统400所在检测工位，凸面检测系统400对设置于第二主表面12′所在侧的摄像头进行检测，其中主要针对高出第二主表面12′的平面进行检测，且该平面平行于第二主表面12′；
S7、传送装置630再次将手机1′移动至主表面检测系统100所在的检测工位，主表面检测系统100对手机1′的第二主表面12′进行检测；
S8、传送装置630将手机1′移动至下料夹具620，下料夹具620中夹具升降气缸613下降，然后夹具水平气缸614使两个夹板615相互靠近，直至完成手机1′夹持，夹具升降气缸613上升便于完成外观检测的手机1′进入下一生产线。
上述步骤中还包括手机1′的中框检测步骤S9、传送装置630将手机1′移动至中框检测工位，对手机1′的中框部分13′进行检测。由于手机1′通常为长方体，且第一主表面11′为矩形，中框部分13′包括两个相对设置的长边和两个相对设置的短边，传送装置630的Y移动机构和Rz旋转机构两者联动，使得中框检测系统200的第二光源220和第二成像设备210能够对长边侧中框和短边侧中框部分均能进行检测。其中步骤S9可位于步骤S2之后和步骤S8之前的任意一步中。于本实施例中，鉴于外观检测设备的紧凑性设置，凸面检测系统400和主表面检测系统100均安装于龙门架700上，凹面检测系统300、中框检测系统200均依次沿直线型输送轨道640设置。因此本实施例中，步骤S9可位于步骤S3之后，或步骤S6之前。
可选地，翻转机构500可设置于传送装置630上，也可单独设置翻转工位920。当外观检测设备单独设置翻转工位920时，步骤S5中还包括，传送装置630将手机1′移动至翻转工位920，再由翻转机构500对手机1′进行翻转使第二主表面12′朝上。
此外，本实施例中还包括步骤S10，吹扫设备对待检测的产品进行吹扫。其中步骤S10可位于步骤S1之后和S2之前，也可以贯穿整个检测过程。
需要声明的是，本实施例中的外观检测方法不仅适用于手机1′外观检测，还可以对平板电脑、显示器、电子阅读器等众多产品进行检测。
于本文的描述中，需要理解的是，术语“上”等方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述和简化操作，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本实用新型的限制。
在本说明书的描述中，参考术语“一实施例”等的描述意指结合该实施例的具体特征、结构、材料或者特点包含于本实用新型的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例。
此外，应当理解，虽然本说明书按照实施方式加以描述，但并非每个实施 方式仅包含一个独立的技术方案，说明书的这种叙述方式仅仅是为清楚器件，本领域技术人员应当将说明书作为一个整体，各实施例中的技术方案也可以适当组合，形成本领域技术人员可以理解的其他实施方式。

Claims (15)

  1. 一种外观检测设备，包括：
    输送系统(600)，包括输送轨道(640)，以及位于所述输送轨道(640)上的上下料夹具和传送装置(630)；
    沿所述输送轨道(640)设置有：
    主表面检测系统(100)，配置为检测待检测产品的主表面；
    中框检测系统(200)，配置为检测位于所述待检测产品的中框部分；
    凹面检测系统(300)，配置为检测设置于所述主表面的凹槽；
    凸面检测系统(400)，配置为检测凸设于所述主表面的平面。
  2. 根据权利要求1所述的外观检测设备，所述外观检测设备还包括检测工位(910)，以及配置为对所述待检测产品进行翻转的翻转工位(920)，所述翻转工位(920)位于所述检测工位(910)的一端。
  3. 根据权利要求1所述的外观检测设备，其中，所述传送装置(630)与所述输送轨道(640)连接，且所述传送装置(630)包括X移动机构、Y移动机构和R Z旋转机构，其中所述R Z旋转机构的自由端设置有配置为承载所述待检测产品的承载部件。
  4. 根据权利要求1所述的外观检测设备，其中，所述主表面检测系统(100)包括：
    第一光源(120)，包括第一主光源(121)和多个第一侧光源(122)，所述第一主光源(121)配置为提供垂直照射于所述待检测产品的主表面的光；多个所述第一侧光源(122)配置为提供倾斜照射于所述待检测产品的主表面的光；
    第一成像设备(110)，配置为位于所述待检测产品主表面的正上方。
  5. 根据权利要求1所述的外观检测设备，其中，所述中框检测系统(200)包括：
    第二光源(220)，所述第二光源(220)为弧形光源，所述弧形光源的两端配置为分别位于所述待检测产品的上侧和下侧；
    两个第二成像设备(210)，配置为分别位于所述待检测产品的上侧和下侧，两个所述第二成像设备(210)均倾斜设置，其中所述第二成像设备(210)的镜头均配置为朝向所述待检测产品。
  6. 根据权利要求1所述的外观检测设备，其中，所述凹面检测系统(300)包括：
    第三光源(320)，配置为提供垂直照射于所述待检测产品的凹面的光；
    第三成像设备(310)；
    第三角度调节板(332)，与所述第三成像设备(310)连接，所述第三角度调节板(332)设置有第三弧形槽(3321)，所述第三成像设备(310)可沿所述第三弧形槽(3321)移动以垂直拍摄所述待检测产品的凹面。
  7. 根据权利要求1所述的外观检测设备，其中，所述凸面检测系统(400)包括：
    第四光源(420)，所述第四光源(420)为同轴光源，所述第四光源(420)配置为提供照射所述待检测产品高于主表面的平面的光；
    第四成像设备(410)，第四成像设备(410)的镜头配置为朝向所述待检测产品高于主表面的平面。
  8. 根据权利要求2所述的外观检测设备，其中，所述翻转工位(920)设置有翻转机构(500)，所述翻转机构(500)包括：
    升降气缸(510)；
    旋转气缸(520)，所述旋转气缸(520)与所述升降气缸(510)的伸缩端连接；
    夹持气缸(530)，所述夹持气缸(530)的壳体与所述旋转气缸(520)的伸缩端连接。
  9. 根据权利要求1所述的外观检测设备，所述外观检测设备还包括吹扫设备，所述吹扫设备配置为对所述待检测产品表面灰尘进行吹扫。
  10. 根据权利要求1所述的外观检测设备，其中，所述上下料夹具包括上料夹具(610)和下料夹具(620)，所述上料夹具(610)和所述下料夹具(620)分别位于所述输送轨道(640)的两端。
  11. 根据权利要求10所述的外观检测设备，其中，所述上料夹具(610)和所述下料夹具(620)中至少之一包括分别位于所述输送轨道(640)两侧的第一支架(611)和第二支架(612)；
    所述第一支架(611)和所述第二支架(612)均设置有夹具升降气缸(613)和夹具水平气缸(614)，所述夹具水平气缸(614)的缸体与所述夹具升降气缸(613)的伸缩端连接，两个所述夹具水平气缸(614)的伸缩端相对设置，且两个所述夹具水平气缸(614)的伸缩端均设置有夹板(615)，两个所述夹板(615)可在两个所述夹具水平气缸614的作用下相对靠近或远离。
  12. 根据权利要求11所述的外观检测设备，其中，所述夹板(615)包括以 下至少之一：
    配置为与所述待检测产品的中框部分接触的夹持部(6151)；
    配置为与所述待检测产品的主表面接触的承载部(6152)。
  13. 一种待检测产品的外观检测方法，用于采用如权利要求1-12任一项所述的外观检测设备对待检测产品进行外观检测，所述外观检测设备还包括检测工位(910)，所述待检测产品的外观检测方法包括：
    在第一检测工位(911)进行第一主表面检测，在第二检测工位(912)对所述第一主表面上的凹槽和凸设的平面中至少之一进行检测；
    翻转所述待检测产品；
    在所述第一检测工位(911)进行第二主表面检测，在所述第二检测工位(912)对所述第二主表面的凹槽和凸设的平面中至少之一进行检测，其中，所述待检测产品的主表面包括所述第一主表面和所述第二主表面，所述检测工位(910)包括所述第一检测工位(911)和所述第二检测工位(912)。
  14. 根据权利要求13所述的待检测产品的外观检测方法，其中，所述在第一检测工位(911)进行第一主表面检测，在第二检测工位(912)对所述第一主表面上的凹槽和凸设的平面中至少之一进行检测，或所述在所述第一检测工位(911)进行第二主表面检测，在所述第二检测工位(912)对所述第二主表面的凹槽和凸设的平面中至少之一进行检测中包括：
    在第三检测工位对待检测产品的中框部分进行检测。
  15. 根据权利要求13所述的待检测产品的外观检测方法，其中，所述在第一检测工位(911)进行第一主表面检测，在第二检测工位(912)对所述第一主表面上的凹槽和凸设的平面中至少之一进行检测之前，所述方法还包括步骤：对所述待检测产品进行吹扫。
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