CN219996921U

CN219996921U - Optical device applied to detection of forming frame

Info

Publication number: CN219996921U
Application number: CN202223529526.8U
Authority: CN
Inventors: 贾睿; 郉志广; 武飞; 冷振; 周钟海; 姚毅
Original assignee: Shenzhen Lingyun Shixun Technology Co ltd
Current assignee: Shenzhen Lingyun Shixun Technology Co ltd
Priority date: 2022-12-22
Filing date: 2022-12-22
Publication date: 2023-11-10
Anticipated expiration: 2032-12-22

Abstract

The utility model relates to the technical field of appearance detection equipment, in particular to an optical device applied to detection of a forming frame, which can solve the problem of higher labor cost required by visual detection of the appearance of the forming frame to a certain extent. The optical device includes: the first supporting table is used for connecting with image acquisition equipment; the at least two image acquisition devices are arranged at intervals and connected with the first supporting table, wherein the image acquisition devices comprise an industrial camera and a telecentric lens; the shell of the industrial camera is connected with the first supporting table, the lens of the industrial camera is connected with the lens interface of the industrial camera, and the telecentric lenses face towards the same molding frame to be detected.

Description

Optical device applied to detection of forming frame

Technical Field

The utility model relates to the technical field of appearance detection equipment, in particular to an optical device applied to detection of a forming frame.

Background

In the production process of the display screen module, in order to reduce the defect that light leakage exists at the edge of the display screen module obtained by production, a forming frame is required to be installed at the edge of the display screen module, the forming frame is formed by preparing liquid silica gel, and the forming frame prepared by the liquid silica gel has the advantages of high transparency, high tearing strength, good rebound resilience, yellowing resistance, water resistance, heat aging resistance, good weather resistance and the like.

After the preparation of the forming frame is completed, the prepared forming frame needs to be detected, so that the forming frame with defects such as bubbles, damage, pits, foreign matters and the like is screened out, and the process of detecting the forming frame needs to be carried out manually, and the forming frame with the defects is screened out in a visual mode.

Because the appearance of manual work through visual mode detection shaping frame exists great damage to the eyes of inspector, and the operation intensity of inspector is big simultaneously, and the human cost of demand is higher.

Disclosure of Invention

In order to solve the problem of high labor cost required by visual detection of the appearance of a formed frame, the utility model provides an optical device applied to detection of the formed frame.

Embodiments of the present utility model are implemented as follows:

an embodiment of the present utility model provides an optical device applied to detection of a molding frame, the optical device including:

the first supporting table is used for connecting with image acquisition equipment;

at least two image acquisition devices which are arranged at intervals and are connected with the first supporting table;

the image acquisition equipment comprises an industrial camera and a telecentric lens; the shell of the industrial camera is connected with the first supporting table; the telecentric lens is connected with the lens interface of the industrial camera, and the telecentric lens faces towards the same molding frame to be detected.

In some embodiments, the optical device further comprises an adjusting sliding table, the adjusting sliding table is connected with the first supporting table, the number of the adjusting sliding tables is the same as that of the industrial cameras, and each industrial camera is fixedly connected with one adjusting sliding table; the adjusting sliding table is used for adjusting the position of the telecentric lens connected with the adjusting sliding table.

In some embodiments, each adjusting sliding table is slidably connected to the first supporting table, so that the adjusting sliding table drives the industrial camera to rotate.

In some embodiments, the angle between the axial direction of the telecentric lens and the axial direction of the adjacent telecentric lens is implemented as 45 ° ± 20 °.

In some embodiments, the optical device further comprises:

the second supporting table is used for connecting the first light source;

the light emitting ports of the at least two first light sources are arranged towards the same molding frame to be detected;

wherein each industrial camera is connected in a gap between two adjacent first light sources.

In some embodiments, the second support table is provided with an arc chute along a surface thereof, and the housing of the first light source extends into the arc chute and is slidably connected with the second support table.

In some embodiments, an angle between an axial direction of the first light source and an axial direction of an adjacent first light source is set to 45 ° ± 20 °.

In some embodiments, the first light source is implemented as a linear light source and heat is dissipated using air-cooled heat dissipation.

In some embodiments, the optical device further comprises:

and the at least two second light sources are respectively arranged corresponding to one image acquisition device, and are connected between the telecentric lens and the industrial camera.

In some embodiments, the second light source is implemented as an internal coaxial light source, with an axis direction of the second light source disposed parallel to an axis direction of the telecentric lens.

The utility model has the beneficial effects that the forming frame to be detected is placed in an environment with brighter ambient light, one end of the telecentric lens, which is far away from the industrial camera, faces the forming frame to be detected, the industrial camera performs image acquisition on the forming frame, and processes and analyzes the acquired forming frame image, so that whether the forming frame image has defects and the specific conditions of the defects can be rapidly determined, the labor intensity when the forming frame to be detected is detected by manual visual observation is reduced, the number requirement on detection personnel can be reduced, and the efficiency of detecting the defects on the surface of the forming frame is further improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

FIG. 1 is a schematic view of a molding frame according to the background of the utility model;

FIG. 2 is a schematic diagram of an optical device for detecting a molding frame according to an embodiment of the present utility model;

FIG. 3 is a front view of an optical device for mold frame inspection according to another embodiment of the present utility model;

FIG. 4 is a schematic diagram of an optical device for detecting a molding frame according to another embodiment of the present utility model;

FIG. 5 is a defect imaging diagram of an optical device for mold frame inspection according to another embodiment of the present utility model.

Reference numerals illustrate: 1. a first support table; 11. an arc-shaped groove; 2. an image acquisition device; 21. an industrial camera; 22. a telecentric lens; 3. adjusting the sliding table; 4. a second support table; 41. an arc chute; 5. a first light source; 6. and a second light source.

Detailed Description

For the purposes of making the objects, embodiments and advantages of the present utility model more apparent, an exemplary embodiment of the present utility model will be described more fully hereinafter with reference to the accompanying drawings in which exemplary embodiments of the utility model are shown, it being understood that the exemplary embodiments described are merely some, but not all, of the examples of the utility model.

It should be noted that the brief description of the terminology in the present utility model is for the purpose of facilitating understanding of the embodiments described below only and is not intended to limit the embodiments of the present utility model. Unless otherwise indicated, these terms should be construed in their ordinary and customary meaning.

The terms "first," second, "" third and the like in the description and in the claims and in the above drawings are used for distinguishing between similar or similar objects or entities and not necessarily for describing a particular sequential or chronological order, unless otherwise indicated. It is to be understood that the terms so used are interchangeable under appropriate circumstances.

The terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a product or apparatus that comprises a list of elements is not necessarily limited to all elements explicitly listed, but may include other elements not expressly listed or inherent to such product or apparatus.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a molding frame in the background of the utility model.

Defects such as fracture, scratch, crush injury, bubbles, dirt, heterochromatic, concave bulge and the like exist in the preparation process of the forming frame, and the minimum specification of the defects is 0.01mm ² . At present, the defects on the surface of the prepared forming frame are detected in an artificial visual mode, the efficiency of detecting the forming frame in an artificial visual mode is low, the number of operators is high, and further the cost for detecting the defects of the forming frame is high. In order to reduce the labor intensity of operators and the field manpower demand in the detection process of the liquid silica gel forming frame conveniently, the utility model provides an optical device applied to the detection of the forming frame.

Fig. 2 is a schematic view of an optical device for detecting a molding frame according to an embodiment of the utility model.

In some embodiments, the optical device for detecting a molding frame provided by the utility model comprises a first supporting table 1 and at least two image acquisition devices 2; the first supporting table 1 is vertically arranged, and the first supporting table 1 is used for being connected with the image acquisition equipment 2; at least two image acquisition equipment 2 interval sets up, and when image acquisition equipment 2 set up to two, the image acquisition port of two image acquisition equipment 2 is symmetric distribution about the z-axis of vertical direction, and the image acquisition port of two image acquisition equipment 2 all is towards same shaping frame of waiting to detect.

The image acquisition equipment 2 comprises an industrial camera 21 and a telecentric lens 22, the industrial camera 21 is implemented as a 2K high-speed camera, the industrial camera 21 is a camera with the pixel size of 7um (um) (77 um) and the pixel size of more than or equal to 30K, and the industrial camera 21 and the first supporting table 1 are connected in a bolt fixing mode; the telecentric lens 22 is located at the lens interface of the industrial camera 21, and the telecentric lens 22 is detachably connected with the lens interface of the industrial camera 21 in a threaded connection manner.

The forming frame to be detected is placed in an environment with brighter ambient light, one end of the telecentric lens 22, far away from the industrial camera 21, faces the forming frame to be detected, the industrial camera 21 performs imaging acquisition on the forming frame and detects the acquired image of the forming frame, so that the labor intensity of the forming frame to be detected through manual visual detection is reduced, the number of detection personnel is reduced, and the efficiency of detecting the surface defects of the forming frame is improved; further link telecentric lens 22 and industry camera 21 as an organic whole through threaded connection's mode to conveniently clear up dust or impurity on telecentric lens 22 surface, reduce because telecentric lens 22 surface covers has debris to lead to the probability that the shaping frame that waits to detect appears wrong examining, improve the convenience of detecting shaping frame surface defect.

Referring to fig. 3, 4 and 5, in some embodiments, in order to facilitate alignment of the telecentric lens 22 with the molding frame to be detected away from the image acquisition port of the industrial camera 21, the optical device for detecting the molding frame provided by the utility model further comprises an adjusting sliding table 3, wherein the adjusting sliding table 3 is connected to the first supporting table 1; the adjusting sliding table 3 is implemented as a triaxial displacement optical platform, the number of the adjusting sliding tables 3 is the same as that of the industrial cameras 21, the adjusting sliding tables 3 are provided with connecting parts for installing and fixing the shells of the industrial cameras 21, and the adjusting sliding tables 3 are used for adjusting the positions of the telecentric lenses.

In some embodiments, the adjustment slide 3 is slidingly connected to the first support table 1. The arc groove 11 has been seted up along its surface to first brace table 1, adjusts the tip of slip table 3 and stretches into in the arc groove 11, still is provided with the damping layer in the arc groove 11 of first brace table 1, thereby telecentric lens 22 can realize with adjacent telecentric lens 22 between the angle modulation along arc groove 11 slip through adjusting slip table 3.

Through setting up with first brace table 1 sliding connection's regulation slip table 3, realize telecentric lens 22 and adjacent position telecentric lens 22 between the regulation of contained angle, adjust slip table 3 simultaneously also can conveniently change telecentric lens 22's horizontal angle and every single move angle, further make things convenient for telecentric lens 22 to keep away from the tip of industry camera 21 towards the shaping frame center department regulation of waiting to detect, make things convenient for industry camera 21 to treat the shaping frame that detects more, can conveniently detect the shaping frame of different specifications, also can improve the definition that the shaping frame imaged simultaneously.

In some embodiments, the angle between the axial direction of telecentric lens 22 and the axial direction of an adjacent telecentric lens 22 is implemented at 45°±20°.

The angle of the included angle between the telecentric lens 22 and the adjacent telecentric lens 22 is limited, and then the intersection area between the telecentric lens 22 and the adjacent telecentric lens 22 is adjusted, so that the detection of the forming frame to be detected at the same position by the telecentric lenses 22 is realized, meanwhile, the included angle between the telecentric lens 22 and the adjacent telecentric lens 22 is adjusted, the forming frame to be detected is conveniently detected in an omnibearing manner, and the probability of missing detection in the process of detecting the forming frame is reduced.

In some embodiments, to reduce the problem of blurring of the molded frame image captured by the industrial camera 21 when the ambient light is dark. The optical device applied to the detection of the forming frame further comprises a second supporting table 4 and at least two first light sources 5, wherein the second supporting table 4 is also vertically arranged, the first light sources 5 are uniformly arranged at intervals along the second supporting table 4, and each industrial camera 21 is positioned at a gap between two adjacent first light sources 5.

The first light source 5 is arranged to supplement light to the surface of the forming frame, so that the darker position of the forming frame is conveniently illuminated, the forming frame is further conveniently imaged and collected, the convenience of detecting defects on the surface of the forming frame is improved, the probability of missing detection in the process of detecting the forming frame is reduced, and the purpose of improving the imaging definition of the forming frame can be achieved.

In some embodiments, in order to reduce the probability of affecting the illumination of the surface of the molding frame when the surface of the first light source 5 is adhered with impurities, the first light source 5 is slidably connected with the second supporting table 4, where the second supporting table 4 is further provided with an arc chute 41 corresponding to the installation position of the first light source 5, a damping layer is also provided in the arc chute 41, the housing of the first light source 5 stretches into the arc chute 41, the housing of the first light source 5 can slide with damping in the arc chute 41, and simultaneously, the first light source 5 can slide with the molding frame to be detected as a central axis.

The shadow of the surface of the molding frame to be detected is illuminated by the rotation of the first light source 5, so that the probability of black spots on the surface of the molding frame to be detected due to the influence of impurities is reduced, the surface of the molding frame is convenient to judge, the probability of misjudgment on the surface of the molding frame due to the fact that the surface of the first light source 5 is covered with impurities is reduced, and the reliability of detecting the molding frame can be further improved.

In some embodiments, the first light source 5 is implemented as a linear light source, and the first light source 5 is cooled by air cooling.

Through implementing first light source 5 as the line light source, thereby realize carrying out the illumination of side angle to the shaping frame through setting up first light source 5 to improve the convenience that industry camera 21 carried out formation of image collection to the shaping frame, reduce the probability that the shaping frame that the preparation was accomplished produced black spot or dark spot at industry camera 21 formation of image in-process surface, thereby improve the convenience of examining the shaping frame.

In some embodiments, in order to facilitate the improvement of the definition of the imaging and collecting of the industrial camera 21 on the molding frame, a second light source 6 is further connected between each telecentric lens 22 and the corresponding industrial camera 21 through a bolt, and the second light source 6 may be connected to the telecentric lens 22 or may be connected to the industrial camera 21, where the connection position of the second light source 6 is not specifically limited.

Through connect second light source 6 between telecentric lens 22 and industry camera 21, second light source 6 can conveniently illuminate the shaping frame, thereby reduces the definition that improves industry camera 21 and carry out formation of image collection to the shaping frame, reduces the in-process that the shaping frame was photographed and produces fuzzy probability, improves the convenience of shooting the shaping frame.

In some embodiments, the second light source 6 is implemented as an inner coaxial light source, the second light source 6 can also be cooled by air cooling and heat dissipation, the second light source 6 is fixedly connected with the telecentric lens 22 by a threaded connection manner, and the axis direction of the second light source 6 is parallel to the axis direction of the telecentric lens 22.

Through setting up second light source 6, second light source 6 can illuminate telecentric lens 22 towards the position of shaping frame to make things convenient for industry camera 21 to carry out formation of image collection to the lateral wall of shaping frame, also can improve the definition that shaping frame imaged simultaneously, thereby make things convenient for follow-up to judging whether the shaping frame exists the defect, improve the convenience of judging shaping frame surface defect.

In some embodiments, the optical device for detecting a molding frame provided by the utility model comprises a first supporting table 1 and three image acquisition devices 2; the first supporting table 1 is vertically arranged, and the first supporting table 1 is used for being connected with the image acquisition equipment 2; the three image acquisition devices 2 are evenly arranged at intervals above the peripheral side of the first supporting table 1, the axis direction of one image acquisition device 2 is parallel to the z-axis of the vertical direction, the image acquisition ports of the other two image acquisition devices 2 are symmetrically distributed about the z-axis of the vertical direction, and the image acquisition ports of the three image acquisition devices 2 are all oriented to the same forming frame to be detected.

The spacing between the image acquisition port of the image acquisition equipment 2 and the surface of the molding frame to be detected is implemented to be 108mm plus or minus 5mm, and the spacing between the image acquisition port of the image acquisition equipment 2 and the molding frame to be detected is limited, so that the distortion of the industrial camera 21 in the process of shooting the molding frame to be detected is reduced, and further clear imaging acquisition of the molding frame to be detected can be realized, and the convenience of surface defects of the molding frame to be detected is improved.

In some embodiments, the optical device for detecting a forming frame provided by the utility model comprises a first light source 5 and a second light source 6, wherein each first light source 5 is distributed in a gap between two adjacent image acquisition devices 2, the first light source 5 is implemented as a linear light source, and all the orientations of the first light sources 5 are gathered at the focus point of the image acquisition devices 2; the second light source 6 is fixed between the telecentric lens 22 and the industrial camera 21, the second light source 6 being implemented as an internal coaxial light source. The first light source 5 and the second light source 6 are cooled by air cooling and heat dissipation.

The front of the forming frame is formed through the vertically arranged industrial camera 21, meanwhile, the high-angle side light illumination is carried out on the forming frame by the first light source 5 with higher projection in the z-axis direction, the low-angle side light illumination is carried out on the forming frame by the first light source 5 with lower projection in the z-axis direction, the positive illumination is carried out on the forming frame opposite to the telecentric lens 22 by the second light source 6, the probability of shadow or dark line on the surface of the forming frame caused by illumination is reduced through the matching of the first light source 5 and the second light source 6, the convenience of imaging acquisition of the forming frame by the industrial camera 21 is improved, and the purpose of improving the efficiency of detecting the surface defects of the forming frame can be realized.

It can be understood that when the image capturing devices 2 are provided in three or more, the image capturing devices 2 are uniformly distributed along the upper side of the periphery of the same molding frame to be detected.

The embodiment of the utility model has the beneficial effects that the forming frame to be detected is placed in the environment with brighter ambient light, one end of the telecentric lens 22, which is far away from the industrial camera 21, faces the forming frame to be detected, the industrial camera 21 performs imaging acquisition on the forming frame and detects the acquired image of the forming frame, so that the labor intensity of the forming frame to be detected by manual visual detection is reduced, the number of detection personnel is reduced, and the efficiency of detecting the surface defects of the forming frame is improved; further link telecentric lens 22 and industry camera 21 as an organic whole through threaded connection's mode to conveniently clear up dust or impurity on telecentric lens 22 surface, reduce because telecentric lens 22 surface covers has debris to lead to the probability that the shaping frame that waits to detect appears wrong examining, improve the convenience of detecting shaping frame surface defect.

The foregoing description, for purposes of explanation, has been presented in conjunction with specific embodiments. However, the above discussion in some examples is not intended to be exhaustive or to limit the embodiments to the precise forms disclosed above. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles and the practical application, to thereby enable others skilled in the art to best utilize the embodiments and various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. An optical device for use in molding frame inspection, the optical device comprising:

2. The optical device for detecting a molding frame according to claim 1, further comprising an adjustment slipway, wherein the adjustment slipway is connected with the first supporting table, the number of the adjustment slipways is the same as the number of the industrial cameras, and each industrial camera is fixedly connected with one adjustment slipway; the adjusting sliding table is used for adjusting the position of the telecentric lens.

3. The optical device for detecting a molding frame according to claim 2, wherein each adjusting sliding table is slidably connected to the first supporting table, so that the adjusting sliding table drives the industrial camera to rotate.

4. An optical device for use in mold frame inspection according to claim 3, wherein the angle between the axial direction of the telecentric lens and the axial direction of the adjacent telecentric lens is implemented as 45 ° ± 20 °.

5. The optical device for use in mold frame inspection according to claim 1, further comprising:

the second supporting table is used for connecting the first light source;

6. The optical device for detecting a molding frame according to claim 5, wherein the second support table is provided with an arc chute along a surface thereof, and the housing of the first light source is inserted into the arc chute and is slidably connected with the second support table.

7. An optical device for use in detection of a molded frame as claimed in claim 6, wherein an angle between an axial direction of the first light source and an axial direction of an adjacent first light source is set to 45 ° ± 20 °.

8. The optical device of claim 5, wherein the first light source is implemented as a linear light source and uses air cooling to dissipate heat.

9. The optical device for use in mold frame inspection according to claim 1, further comprising:

10. The optical device for detecting a mold frame according to claim 9, wherein the second light source is implemented as an inner coaxial light source, and an axial direction of the second light source is disposed in parallel with an axial direction of the telecentric lens.