CN210005460U

CN210005460U - Take cambered surface glass appearance imperfections on-line measuring formation of image structure

Info

Publication number: CN210005460U
Application number: CN201920778185.7U
Authority: CN
Inventors: 都卫东; 王岩松; 王郑; 张志强
Original assignee: Focusight Technology Co Ltd
Current assignee: Focusight Technology Co Ltd
Priority date: 2019-05-27
Filing date: 2019-05-27
Publication date: 2020-01-31
Anticipated expiration: 2029-05-27

Abstract

The utility model relates to an take cambered surface glass appearance defect on-line measuring imaging structure, including formation of image camera, telecentric mirror head and light source, formation of image camera and telecentric mirror head fixed connection, telecentric mirror head sets up in the below of formation of image camera, light source set up in the side of telecentric mirror head, light source is 60 ~ 65 with the contained angle on the article imaging surface that awaits measuring, formation of image camera and telecentric mirror head be 68 ~ 72 with the contained angle on article imaging surface that awaits measuring the utility model discloses utilize the light source of special formulation, realized also continuous lighting of cambered surface and plane connecting portion, do not produce the interrupt, with the line sweep the imaging structure that camera and camera lens collocation are common and realize the big planar all appearance defect detection of cambered surface, simplified ordinary imaging structure, reduced mechanical structure space, the cost is reduced.

Description

Take cambered surface glass appearance imperfections on-line measuring formation of image structure

Technical Field

The utility model belongs to the technical field of the visual detection technique and specifically relates to take cambered surface glass appearance imperfections on-line measuring formation of image structure.

Background

With the increase of labor cost and the development of new technology, the trend of replacing manpower with machine detection is towards using machine detection, but the machine detection still has no good imaging scheme to solve the appearance detection of glass with an arc surface, and mainly has the following problems that 1, the defect detection of the arc surface and a large plane cannot be realized by using an imaging structure of light sources, 2, the imaging structure is complex, the debugging difficulty is high, the CT production requirement cannot be met, and 3, the cost is too high, the mechanical structure is complex, the imaging effect is poor, and the debugging is difficult.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide take cambered surface glass appearance defect on-line measuring imaging structure, solved and taken cambered surface glass on-line measuring time, the line scanning camera can not compromise the problem of cambered surface and big planar defect detection simultaneously with the imaging structure of light sources.

take cambered surface glass appearance defect on-line measuring imaging structure, including formation of image camera, telecentric mirror head and light source, formation of image camera and telecentric mirror head fixed connection, telecentric mirror head sets up in the below of formation of image camera, light source set up in the side of telecentric mirror head, light source is 60 ~ 65 with the contained angle on article imaging surface that awaits measuring, formation of image camera and telecentric mirror head and the contained angle on article imaging surface that awaits measuring be 68 ~ 72.

The lighting source comprises a housing, a light source luminous body is arranged in the housing, a condensing lens is arranged above the light source luminous body, the light source luminous body is connected with a wiring terminal through a cable, an open slot is arranged at the top of the housing, a grating light homogenizing film is arranged in the open slot, the open slot is a non-horizontal plane with a horizontal section and a bending section, the bending section is respectively arranged at two ends of the horizontal section, the included obtuse angle between the bending section and the horizontal section is 165 degrees, and a heat dissipation device is arranged at the lower part of the housing.

, the imaging camera is a line scan camera.

, the light source illuminant includes an aluminum substrate, LED lamp beads are arranged on the aluminum substrate, the grating light homogenizing film is inserted in the open slot, the heat dissipation device includes a heat dissipation aluminum shell, a heat dissipation device and a heat dissipation fan are arranged in the heat dissipation aluminum shell, the cable is a shielding cable, and the light source illuminant, the condensing lens and the grating light homogenizing film are arranged in parallel.

The utility model has the advantages that the defects in the background technology are overcome, the specially formulated lighting source is utilized, the continuous lighting of the connecting part of the cambered surface and the plane is realized, and the interruption is not generated; the imaging structure formed by matching the line scanning camera and the lens together realizes the detection of all appearance defects of the large plane of the cambered surface; the common imaging structure is simplified, the mechanical structure space is reduced, and the cost is reduced.

Drawings

Fig. 1 is a schematic view of an imaging structure of the present invention;

fig. 2 is an imaging light path diagram of the present invention;

FIGS. 3-5 are schematic structural views of the illumination source of the present invention;

in the figure: A. an imaging camera; B. a telecentric lens; C. an illumination light source; 1. a housing; 2. an aluminum substrate; 3. LED lamp beads; 4. a condenser lens; 5. a cable; 6. an open slot; 7. a grating light homogenizing film; 8. a horizontal segment; 9. bending the section; 10. the included obtuse angle; 11. a heat dissipating aluminum housing; 12. a heat radiation fan; 13. a heat sink.

Detailed Description

The invention will now be described in greater detail with reference to the accompanying drawings, which are simplified and are illustrative of the basic structure of the invention in schematic form only, and which therefore show only those elements relevant to the invention.

take cambered surface glass appearance defect on-line measuring imaging structure as shown in figure 1, including formation of image camera A, telecentric mirror head B and illuminant C, formation of image camera and telecentric mirror head fixed connection, telecentric mirror head set up in the below of formation of image camera, illuminant set up in the side of telecentric mirror head, the formation of image camera is the line sweep camera.

As shown in fig. 2, the included angle between the illumination light source and the imaging surface of the object to be measured is 62 °, the included angle between the imaging camera and the telecentric lens and the imaging surface of the object to be measured is 70 °, the dotted lines in fig. 2 respectively represent the central extension lines of the imaging camera and the illumination light source, the two central extension lines are projected on the surface of the object to be measured after crossing above the object to be measured, the projection distance on the surface of the object to be measured is 60mm, the vertical height between the illumination light source and the object to be measured is 190mm, the vertical height between the telecentric lens and the object to be measured is 200mm, the image is formed by using the telecentric lens at two sides, the depth of field can reach 7mm, the line scanning camera is combined with the telecentric lens at two sides to form an image under , and the glass appearance with radian is integrally formed by matching with the specific angle of the light source, so.

The illumination light source is shown in fig. 3-5 and comprises a shell 1, a light source luminous body is arranged in the shell 1, a condensing lens 4 is arranged above the light source luminous body, and the light source luminous body is connected with a wiring terminal through a cable 5; the cable is a shielded cable. The light source luminous body comprises an aluminum substrate 2, and LED lamp beads 3 of American CREE company are arranged on the aluminum substrate 2. The lower part of the casing 1 is provided with a heat dissipation device, which comprises a heat dissipation aluminum shell 11, and a heat sink 13 and a heat dissipation fan 12 are arranged in the heat dissipation aluminum shell.

The light source comprises a shell 1, and is characterized in that an open slot 6 is formed in the top of the shell 1, a grating light homogenizing film 7 is arranged in the open slot 6, the open slot 6 is a non-horizontal plane with a horizontal section 8 and a bending section 9, the bending sections 9 are respectively arranged at two ends of the horizontal section 8, an obtuse angle 10 formed by the bending sections and the horizontal section is 165 degrees, the grating light homogenizing film is pieces, the connection part of the bending sections and the horizontal section is continuous, a light source can be completely penetrated out, interruption can not be generated, and the light source light emitting body, a condensing lens and the grating light homogenizing film are arranged in parallel.

The profiling structure is adopted at two ends of the light source, the mobile phone glass is completely attached to the curvature of the mobile phone glass, so that the brightness of any point of the glass is , the 2.5D surface of the mobile phone glass and the large glass plane can be simultaneously illuminated and imaged by using cameras and the light source, the connecting part of the cambered surface and the plane can be continuously illuminated without interruption, the brightness of the whole illumination area is uniform, the brightness difference caused by the cambered surface cannot be generated, the imported optical film is adopted for light processing, no interference factors exist, the online real-time appearance detection illumination is realized, the production speed of products is improved, defective products are prevented from flowing into the market, and the profiling structure is simple in composition, convenient to debug.

Compared with the existing traditional optical imaging structure, the traditional imaging structure is heavy and poor in appearance detection effect, the structure is simpler, the cost is low, the imaging structure is suitable for glass products with cambered surfaces of different styles, the appearance detection effect is better, the imaging structure only using light sources simultaneously considers the defect detection of the cambered surfaces and the large planes, the uniformity of the light sources is better, the imaging quality of different surfaces of the glass can be considered, the uniform illumination of any surface of the whole glass can be realized, and the image taking detection with a better camera function in the online visual detection can be conveniently carried out.

While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.

Claims

The utility model provides an take cambered surface glass appearance defect on-line measuring imaging structure, its characterized in that is including formation of image camera, telecentric mirror head and light source, formation of image camera and telecentric mirror head fixed connection, telecentric mirror head sets up in the below of formation of image camera, light source set up in the side of telecentric mirror head, light source and the contained angle that awaits measuring article imaging surface are 60 ~ 65, formation of image camera and telecentric mirror head and the contained angle that awaits measuring article imaging surface be 68 ~ 72.
2. The online detection imaging structure for the appearance defects of the glass with the cambered surface as claimed in claim 1, wherein: the lighting source comprises a shell, wherein a light source luminous body is arranged in the shell, a condensing lens is arranged above the light source luminous body, and the light source luminous body is connected with a wiring terminal through a cable; the top of the shell is provided with an open slot, and a grating light homogenizing film is arranged in the open slot; the open slot is the non-horizontal plane that has horizontal segment and bending segment, the bending segment sets up respectively in the both ends of horizontal segment, and the obtuse angle that bending segment and horizontal segment pressed from both sides is 165, the lower part of casing is provided with heat abstractor.
3. The online detection imaging structure for the appearance defects of the glass with the cambered surface as claimed in claim 1, wherein: the imaging camera is a line scan camera.
4. The online detection imaging structure for the appearance defects of the glass with the cambered surface as claimed in claim 2, wherein: the light source luminous body comprises an aluminum substrate, and LED lamp beads are arranged on the aluminum substrate; the grating light homogenizing film is inserted in the open slot; the heat dissipation device comprises a heat dissipation aluminum shell, and a heat radiator and a heat dissipation fan are arranged in the heat dissipation aluminum shell; the cable is a shielded cable; the light source luminous body, the condensing lens and the grating light homogenizing film are arranged in parallel.