Cover plate glass stripe detection device

Abstract

The utility model relates to glass stripe detection, and provides a cover plate glass stripe detection device, which comprises a light source; the projection plate and the light source are arranged at an interval; the conveying mechanism is used for supporting and conveying the cover plate glass, the conveying mechanism is at least partially arranged between the light source and the projection plate, and the part, located between the projection plate and the light source, of the conveying mechanism is provided with a light passing notch so that light emitted by the light source can penetrate through the light passing notch; and the image acquisition mechanism comprises a camera facing the projection plate to acquire images on the projection plate. According to the technical scheme, the camera of the image acquisition mechanism can acquire projection images in a large range, the structure can be simplified, the equipment cost can be reduced, and the economic benefit can be improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of cover glass detection, and particularly to a cover glass stripe detection device. Background Art

[0002] Cover glass refers to the glass panel used in electronic display devices such as liquid crystal displays and touch screens, and has characteristics such as high light transmittance, high hardness, and scratch resistance. With the popularization of electronic products and the improvement of people's requirements for display effects, the market demand for cover glass is increasing continuously. However, defects such as stripes, scratches, and bubbles may occur in the production process of cover glass, and these defects directly affect the quality and performance of the products. Therefore, how to effectively detect and control these defects has become an urgent problem to be solved in the production process.

[0003] Traditional cover glass stripe detection mainly relies on manual visual inspection, but this method has certain limitations. First, manual detection has low efficiency, high cost, and is easily affected by the fatigue and subjective factors of the detection personnel, making it difficult to ensure the stability and consistency of detection. Second, it is difficult to detect tiny stripes and hidden defects manually, resulting in the difficulty of effectively controlling the product quality. To solve the above problems, more and more enterprises have begun to introduce automated detection equipment to realize the online detection of cover glass stripes through technologies such as image processing and machine learning.

[0004] Although the existing automated detection equipment has improved the detection efficiency and accuracy to a certain extent, there are still some deficiencies. CN117368213A discloses a glass stripe detection system, which includes a light source and a light intensity induction screen. The light intensity induction screen has a light intensity sensor array that can sense the intensity of the light passing through the glass to judge the quality of the glass according to the light intensity. However, the detection range of the light intensity sensor is small, and a large number of light intensity sensors are required, resulting in a high overall cost and a complex structure. Summary of the Utility Model

[0005] One technical problem to be solved by the present disclosure is that the structure of the cover glass stripe detection device is complex and the cost is high.

[0006] To solve the above technical problem, an embodiment of the present disclosure provides a cover glass stripe detection device, which includes:

[0007] A light source;

[0008] A projection plate, which is spaced apart from the light source;

[0009] A conveying mechanism, which is used to support and convey the cover glass. The conveying mechanism is at least partially disposed between the light source and the projection plate. A light passing notch is provided in the part of the conveying mechanism located between the projection plate and the light source to allow the light emitted by the light source to pass through; and

[0010] Image acquisition mechanism, the image acquisition mechanism includes a camera facing the projection plate to acquire the image on the projection plate.

[0011] In some embodiments, it further includes a main frame, and the conveying mechanism is arranged on the main frame.

[0012] In some embodiments, the conveying mechanism includes a plurality of conveying rollers arranged on the main frame along a first direction, each conveying roller extends along a second direction perpendicular to the first direction, the light source, the light passing notch and the projection plate are arranged along a third direction, and the third direction is perpendicular to the first direction and the second direction respectively.

[0013] In some embodiments, the light source includes a strip-shaped LED lamp extending along the second direction.

[0014] In some embodiments, it further includes a light source support. On both sides of the main frame along the second direction, there are two legs arranged at intervals along the first direction, and both ends of the light source support are clamped between the two legs.

[0015] In some embodiments, the bottom of the light source support is provided with rollers, and the light source support can move relative to the main frame along the second direction.

[0016] In some embodiments, the image acquisition mechanism includes a cross beam arranged along the second direction and a plurality of cameras arranged on the cross beam.

[0017] In some embodiments, in the third direction, the cross beam is arranged between the projection plate and the conveying mechanism.

[0018] In some embodiments, the projection plate has a white surface.

[0019] In some embodiments, it further includes a black curtain, and the black curtain encloses a light passing channel between the light source and the light passing notch.

[0020] Through the above technical solutions, the camera of the image acquisition mechanism can acquire the projection image in a large range, which can simplify the structure, reduce the equipment cost and improve the economic benefits. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic structural diagram of the cover glass stripe detection device disclosed in the embodiments of the present disclosure;

[0023] Figure 2 It is a partial structural schematic diagram of the cover glass stripe detection device disclosed in the embodiments of the present disclosure.

[0024] Explanation of reference numerals:

[0025] 1. Light source; 2. Projection plate; 3. Main frame; 4. Conveyor roller; 5. LED lamp; 6. Light source support; 7. Leg; 8. Roller; 9. Cross beam; 10. Camera. Specific embodiments

[0026] The following further describes the implementation manners of the present disclosure in detail in conjunction with the drawings and embodiments. The detailed descriptions and drawings of the following embodiments are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms, not limited to the specific embodiments disclosed in the text, but including all technical solutions falling within the scope of the claims.

[0027] The present disclosure provides these embodiments to make the present disclosure thorough and complete, and fully convey the scope of the present disclosure to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, the components of materials, numerical expressions and values described in these embodiments should be construed as merely exemplary, rather than as limitations.

[0028] It should be noted that in the description of the present disclosure, unless otherwise specified, the meaning of "a plurality" is greater than or equal to two; the orientation or positional relationships indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", etc. are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present disclosure. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0029] In addition, the "first", "second" and similar terms used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range. Words such as "including" or "comprising" mean that the elements before the word cover the elements listed after the word, and do not exclude the possibility of also covering other elements.

[0030] It should also be noted that in the description of the present disclosure, unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances. When it is described that a specific device is located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0031] All terms used in the present disclosure have the same meanings as those understood by those of ordinary skill in the art to which the present disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as those, should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense, unless specifically defined as such here.

[0032] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the specification.

[0033] Referring Figure 1 and Figure 2 As shown, the present disclosure provides a cover glass stripe detection device, which includes:

[0034] A light source 1;

[0035] A projection plate 2, which is arranged at an interval from the light source 1;

[0036] A conveying mechanism, which is used to support and convey the cover glass. The conveying mechanism is at least partially arranged between the light source 1 and the projection plate 2. A light-passing notch is arranged in the part of the conveying mechanism located between the projection plate 2 and the light source 1 to allow the light emitted by the light source 1 to pass through; and

[0037] An image acquisition mechanism, which includes a camera 10 facing the projection plate 2 to acquire an image on the projection plate 2.

[0038] The conveying mechanism can be used to support and convey the cover glass. The light source 1 and the projection plate 2 are respectively arranged on both sides of the conveying mechanism. The light source 1 emits light towards the cover glass on the conveying mechanism, and the light passes through the cover glass and irradiates on the projection plate 2. According to the quality of the cover glass, such as whether there are obvious stripes therein, this causes the light irradiated on the projection plate 2 to form a stripe projection. The camera 10 can acquire the projection image on the projection plate 2 to allow the quality of the cover glass to be evaluated based on the acquired projection image.

[0039] When there are streaks in some areas of the cover glass, the color of the projection formed on the projection plate 2 is different from that of the area without streaks. Based on this, it can be determined whether there are streaks in the cover glass.

[0040] For the images collected by the image acquisition mechanism, they can be analyzed by a computer installed with corresponding analysis software to evaluate the quality of the cover glass. Of course, they can also be manually observed and analyzed by the staff.

[0041] The camera 10 is arranged at an interval from the projection plate 2, and it can collect images in a large range. Through the combination of the light source 1 and the projection plate 2, a clear streak image is formed to ensure the accuracy of detection.

[0042] Among them, the cover glass can be in a moving state on the conveying mechanism to realize the on-line detection of the cover glass. The whole device has a compact structure and is easy to operate, and is suitable for the large-scale detection of streaks on the cover glass.

[0043] In this solution, the camera of the image acquisition mechanism can collect projection images in a large range, which can simplify the structure, reduce the equipment cost, and improve the economic benefits. This device can be used in the manufacturing process of cover glasses for electronic devices such as mobile phones and tablet computers to detect streak defects on the glass surface and improve product quality and production efficiency.

[0044] In some embodiments, the cover glass streak detection device further includes a main frame 3, and the conveying mechanism is arranged on the main frame 3. The main frame 3 is a support base and can be used to support the conveying mechanism.

[0045] Among them, in some embodiments, the conveying mechanism includes a plurality of conveying rollers 4 arranged on the main frame 3 along a first direction, and each conveying roller 4 extends along a second direction perpendicular to the first direction. The light source 1, the light passing gap, and the projection plate 2 are arranged along a third direction, and the third direction is perpendicular to the first direction and the second direction respectively. When the main frame 3 is placed on a horizontal plane, the first direction and the second direction correspond to two mutually perpendicular horizontal directions, and the third direction corresponds to the vertical direction. The conveying mechanism includes a plurality of mutually parallel conveying rollers 4, and the conveying rollers 4 can be driven by a driving member (such as a motor, an engine, etc.) to rotate in the same direction to support and convey the cover glass located thereon. The projection plate 2 can be located above the conveying rollers 4, the light source 1 is located below the conveying rollers 4, and the light passing gap can be the space between two adjacent conveying rollers 4. The dimension of the light passing gap along the conveying direction needs to be smaller than the dimension of the cover glass along the conveying direction to ensure that the cover glass can smoothly cross the light passing gap.

[0046] In other embodiments, the conveying mechanism can include a conveying belt, and the light passing gap can be the space between two adjacent conveying belts at intervals.

[0047] Among them, in some embodiments, the light source 1 includes a strip-shaped LED lamp 5 extending along the second direction. The LED lamp has the advantages of small volume, low energy consumption, long service life, etc. Among them, the light intensity and wavelength of the LED lamp 5 can be adjusted to adapt to different detection requirements. The LED lamp 5 is formed as a strip extending along the second direction, and its size in the second direction can be the same as the size of the cover glass in the second direction, or the same as the size of the conveying roller 4 in the second direction, so that the cover glass passing over the light passing notch is more comprehensively irradiated in the second direction, avoiding the appearance of irradiation dead angles.

[0048] Among them, in some embodiments, the cover glass stripe detection device further includes a light source support 6. Two legs 7 arranged at intervals along the first direction are respectively provided on both sides of the main frame 3 along the second direction. The two ends of the light source support 6 are respectively clamped between the two legs 7, and the light source support 6 can move relative to the main frame 3 along the second direction. The main frame 3 is provided with 4 legs 7, 2 on each side along the second direction. On each side of the main frame 3, the two legs 7 are spaced along the first direction, and the two ends of the light source support 6 can be respectively inserted between the two legs 7 on both sides.

[0049] In addition, in some embodiments, rollers 8 are provided at the bottom of the light source support 6, and the light source support 6 can move relative to the main frame 3 along the second direction. The light source support 6 can move along the second direction to facilitate moving the light source support 6 out between the legs 7 to allow replacement or setting of the LED lamp 5. The rollers 8 can reduce the moving resistance, and the light source support 6 can move relative to the main frame 3 more easily.

[0050] Among them, in some embodiments, the image acquisition mechanism includes a cross beam 9 arranged along the second direction and a plurality of cameras 10 arranged on the cross beam 9. The cross beam 9 can serve as a support base for the cameras 10. The cameras 10 are arranged at intervals in the second direction. Each camera 10 can collect a part of the area on the projection plate 2, and the plurality of cameras 10 can jointly cover all areas on the projection plate 2.

[0051] Among them, in some embodiments, in the third direction, the cross beam 9 is arranged between the projection plate 2 and the conveying mechanism. In the first direction, the cross beam 9, the projection plate 2, and the light passing notch can be staggered from each other to avoid the cross beam 9 blocking the light passing through the light passing notch.

[0052] Reference Figure 1 As shown, the main frame 3 includes two longitudinal beams extending along the first direction. The conveying roller 4 is arranged between the two longitudinal beams. Vertical beams along the third direction are respectively arranged on the two longitudinal beams. The two ends of the projection plate 2 are supported by the upper ends of the two vertical beams. The cross beam 9 is arranged between the two vertical beams. In addition, the main frame 3 includes other support legs besides the legs 7.

[0053] Among them, in some embodiments, the projection plate 2 has a white surface. The white surface can more clearly display the projection formed by the light passing through the cover glass, especially the projection formed by the stripes. The projection plate 2 can be a long rectangular plate member, and its size can be larger than the size of the light-transmitting notch, especially the size in the second direction is larger than the size of the light-transmitting notch in the second direction, so as to prevent the light passing through the cover glass from irradiating the area outside the projection plate 2.

[0054] In addition, in some embodiments, the cover glass stripe detection device further includes a black curtain, and the black curtain encloses a light-transmitting channel between the light source 1 and the light-transmitting notch. The light-transmitting channel enclosed by the black curtain can reduce the scattering of light to the surroundings, especially can reduce the surrounding stray light from passing through the light-transmitting notch and the cover glass and irradiating into the projection plate 2, so as to avoid the projection formed by the stray light from affecting the detection result.

[0055] So far, the embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details well known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0056] Although some specific embodiments of the present disclosure have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for the purpose of illustration and not for the purpose of limiting the scope of the present disclosure. Those skilled in the art should understand that the above embodiments can be modified or some technical features can be equivalently replaced without departing from the scope and spirit of the present disclosure. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way.

Claims

1. A cover glass stripe detection device, characterized in that: include: Light source (1); a projection plate (2), the projection plate (2) being arranged at a distance from the light source (1); a conveying mechanism, the conveying mechanism being used to support and convey the cover glass, the conveying mechanism being at least partially arranged between the light source (1) and the projection plate (2), and a light-transmitting notch being arranged at a portion of the conveying mechanism located between the projection plate (2) and the light source (1) to allow light emitted by the light source (1) to pass through; as well as An image acquisition mechanism comprises a camera (10) facing the projection board (2) to acquire an image on the projection board (2).

2. The cover glass stripe detection device according to claim 1, characterized in that: It also comprises a main frame (3), and the conveying mechanism is arranged on the main frame (3).

3. The cover glass stripe detection device according to claim 2, characterized in that: The conveying mechanism comprises a plurality of conveying rollers (4) arranged on the main frame (3) along a first direction, each of the conveying rollers (4) extending along a second direction perpendicular to the first direction, and the light source (1), the light-transmitting notch and the projection plate (2) are arranged along a third direction, and the third direction is perpendicular to the first direction and the second direction respectively.

4. The cover glass stripe detection device according to claim 3, characterized in that: The light source (1) comprises a strip-shaped LED lamp (5) extending along the second direction.

5. The cover glass stripe detection device according to claim 3, characterized in that: It also comprises a light source support (6), wherein two legs (7) arranged at intervals along the first direction are respectively arranged on both sides of the main frame (3) along the second direction, and the two ends of the light source support (6) are respectively clamped between the two legs (7).

6. The cover glass stripe detection device according to claim 5, characterized in that: A roller (8) is provided at the bottom of the light source support (6), and the light source support (6) is capable of moving along the second direction relative to the main frame (3).

7. The cover glass stripe detection device according to claim 3, characterized in that: The image acquisition mechanism comprises a crossbeam (9) arranged along the second direction and a plurality of cameras (10) arranged on the crossbeam (9).

8. The cover glass stripe detection device according to claim 7, characterized in that: In the third direction, the crossbeam (9) is arranged between the projection plate (2) and the conveying mechanism.

9. The cover glass stripe detection device according to any one of claims 1 to 8, characterized in that: The projection board (2) has a white surface.

10. The cover glass stripe detection device according to any one of claims 1 to 8, characterized in that: It also comprises a black curtain, wherein the black curtain forms a light-passing passage between the light source (1) and the light-passing gap.

Images