Glass detection device and detection method

Abstract

The invention discloses a glass detection device, and belongs to the technical field of glass detection, the glass detection device comprises a light source fixing piece, the light source fixing piece is internally provided with a first space, and one side wall of the first space is communicated with the outside of the light source fixing piece; the light emitting unit is arranged in the first space, and the light emitting unit is used for emitting light and irradiating the outside of the light source fixing part; the positioning component is used for positioning the raw glass sheet, so that the side surface of the raw glass sheet is opposite to the first space, and the light emitted by the light emitting unit enters the raw glass sheet from the side surface of the raw glass sheet. The device has the advantage that flaws such as dust and bubbles in the raw glass sheet can be clearly displayed.

Description

Technical Field

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

[0002] Glass panels are widely used in the household appliance field. Existing household appliances, such as induction cookers, microwave ovens, etc., all rely on the use of glass panels. Glass sheets are processed (such as printing, tempering, etc.) to obtain glass panels.

[0003] Since the quality of the glass sheet will directly affect the quality of the glass panel product, it is necessary to detect the glass sheet before producing the glass panel to eliminate defective glass sheets. Therefore, before manufacturing the glass panel, it is necessary to eliminate the glass panels with impurities or bubbles inside and scratches on the surface to ensure the product quality. Currently, the detection of glass sheets mainly uses light to irradiate the front or back of the glass sheet, and the detection operator directly observes the glass sheet with the naked eye to determine whether there are impurities, bubbles or scratches on the glass sheet. This detection method cannot make the tiny impurities, bubbles and scratches in the glass sheet stand out very prominently, not only has relatively high requirements for the visual inspection of the detection operator, but also is prone to the problem that defects cannot be detected. For this reason, we propose a new type of glass panel detection device to solve the above-mentioned technical problems. Summary of the Invention

[0004] The purpose of the present invention is to propose a glass detection device and a detection method to solve the above problems.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] A glass detection device includes:

[0007] A light source fixing member, the inside of the light source fixing member has a first space, and one side wall of the first space communicates with the outside of the light source fixing member;

[0008] A light emitting unit, the light emitting unit is arranged in the first space, and the light emitting unit is used for emitting light and irradiating to the outside of the light source fixing member;

[0009] A positioning member, the positioning member is used for positioning the glass sheet, so that the side surface of the glass sheet faces the first space, so that the light emitted by the light emitting unit enters the inside of the glass sheet from the side surface of the glass sheet.

[0010] Preferably, it further includes a background board, and the background board is arranged on one side of the light source fixing member.

[0011] Preferably, the positioning member includes a bearing strip disposed on the outer wall of the light source fixing member and located on one side of the first space, and the bearing strip is arranged along the length direction of the first space; the bearing strip protrudes from the outer wall of the light source fixing member.

[0012] Preferably, the positioning member further includes a light-shielding strip disposed on the outer wall of the light source positioning member and located on the other side of the first space, and the light-shielding strip extends along the length direction of the first space; a light guide channel is formed between the light-shielding strip and the bearing strip, and one end of the bearing strip away from the light source fixing member protrudes from one end of the light-shielding strip away from the light source fixing member.

[0013] Preferably, there is a gap between the background plate and the first space.

[0014] Preferably, the height of the light guide channel is 1.5 mm to 5 mm.

[0015] Preferably, the bearing strip protrudes from the light-shielding strip by 2 mm to 4 mm.

[0016] A glass detection method uses a glass detection device as described above, and further includes the following steps:

[0017] Step A: Turn on the light-emitting unit to make the light-emitting unit irradiate light to the outside of the light source fixing member.

[0018] Step B: Take a glass raw sheet from the area to be inspected, and place the edge of the glass raw sheet against the positioning member so that the side surface of the glass raw sheet is aligned with the first space.

[0019] Step C: Detect whether there are defects inside the glass raw sheet:

[0020] If there are defects inside the glass raw sheet, place the glass raw sheet in the defective product area.

[0021] If there are no defects inside the glass raw sheet, place the glass raw sheet in the non-defective product area.

[0022] Repeat steps B and C.

[0023] Preferably, in step C, an industrial vision detection device is used to detect the glass raw sheet.

[0024] One embodiment of the present invention has the following beneficial effects:

[0025] 1. The light emitted by the light-emitting unit in the first space irradiates into the glass sheet from the side wall of the glass sheet. Since the inner surface of the glass sheet can reflect light, the light irradiated into the glass sheet by the light source can be continuously reflected inside the glass sheet. At this time, the whole glass sheet will become very translucent. However, when there are defects such as dust and air bubbles inside the glass sheet, due to the continuous reflection of light inside the glass sheet, when the light is reflected to the surface of the defects such as dust and air bubbles, the surface of the defects such as dust and air bubbles will show a visual effect of emitting light, so that the defects such as dust and air bubbles inside the glass sheet will be clearly displayed;

[0026] 2. Since the present invention uses the method of lighting from the side of the glass sheet for detection, when detecting the glass sheet, it is not easily interfered by other lights, so that the defects such as dust and air bubbles inside the glass sheet can be easily observed. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings further illustrate the present invention, but the content in the drawings does not constitute any limitation to the present invention.

[0028] Figure 1 is a three-dimensional structural schematic diagram of one embodiment of the present invention;

[0029] Figure 2 is a cross-sectional structural schematic diagram of one embodiment of the present invention;

[0030] Figure 3 is Figure 2 an enlarged structural schematic diagram of part A in

[0031] Figure 4 is a three-dimensional structural schematic diagram of the light source fixing member of one embodiment of the present invention;

[0032] In the drawings: 1 - light source fixing member, 11 - first space, 2 - light-emitting unit, 3 - positioning member, 31 - carrying bar, 32 - light-shielding bar, 4 - background plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where like or similar reference numerals denote like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention and should not be construed as limiting the present invention. In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 thus should not be construed as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0034] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "mounted", "connected" and "coupled" shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection, an electrical connection or a connection capable of mutual communication; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention may be understood according to specific circumstances.

[0035] In the present invention, unless otherwise clearly defined and limited, the fact that the first feature is "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the fact that the first feature is "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The fact that the first feature is "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.

[0036] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplicity and clarity and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those of ordinary skill in the art can realize the application of other processes and / or the use of other materials.

[0037] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific embodiments.

[0038] A glass detection device according to this embodiment, as Figures 1-4 shown, includes:

[0039] A light source fixing member 1, the interior of the light source fixing member 1 has a first space 11, and one side wall of the first space 11 communicates with the outside of the light source fixing member 1;

[0040] A light emitting unit 2, the light emitting unit 2 is arranged in the first space 11, and the light emitting unit 2 is used for emitting light and irradiating to the outside of the light source fixing member 1;

[0041] A positioning member 3, the positioning member 3 is used for positioning the glass sheet, so that the side surface of the glass sheet faces the first space 11, so that the light emitted by the light emitting unit 2 enters the interior of the glass sheet from the side surface of the glass sheet.

[0042] The light-emitting unit 2 may be a light source such as an LED lamp, a halogen lamp, an energy-saving lamp or an incandescent lamp. The light-emitting unit 2 may have a plurality of identical or different light sources, which are evenly or unevenly arranged in the first space 11. The light-emitting unit 2 emits light to the outside of the light source fixing member 1 in the first space 11. When inspecting the original glass sheet, the original glass sheet is placed against the positioning member 3 so that the side of the original glass sheet is close to and aligned with the first space 11. The light emitted by the light-emitting unit 2 in the first space 11 is irradiated into the original glass sheet from the side wall of the original glass sheet. Since the inner surface of the original glass sheet can reflect light, the light irradiated into the original glass sheet by the light source can be continuously reflected in the original glass sheet. At this time, the original glass sheet as a whole becomes very transparent. However, when there is a When there are defects such as dust and bubbles, since the light is constantly reflected inside the glass sheet, when the light is reflected on the surface of the defects such as dust and bubbles, the surface of the defects such as dust and bubbles will show a luminous visual effect, so that the defects such as dust and bubbles inside the glass sheet will be displayed very clearly; in addition, by making the side of the glass sheet close to the light-emitting unit 2 to increase the intensity of light entering the interior of the glass sheet, when the light is reflected on the surface of the defects such as dust and bubbles, the brightness of the surface of the defects such as dust and bubbles is higher, so that not only can the defects such as dust and bubbles inside the glass sheet be more obvious, but also can be easily distinguished from the dust on the surface of the glass sheet; because the present invention adopts the method of lighting from the side of the glass sheet for detection, Therefore, when inspecting the glass original piece, it is not easily disturbed by other light, so that defects such as dust and bubbles inside the glass original piece can be easily observed; specifically, the current glass original piece inspection is mostly carried out from the front or back of the glass original piece (the front of the glass original piece refers to the surface of the glass original piece on one side close to the observation point when observing the glass original piece, and the other side is the back of the glass original piece); for the method of lighting from the front of the glass original piece, since the outer surface of the glass original piece will reflect light, when the light is irradiated to the front of the glass original piece, part of the light will be refracted into the interior of the glass original piece, and part of the light will be reflected from the front of the glass original piece. The light reflected from the front of the glass original piece will cause great interference to the inspection of the glass original piece, so it is necessary to constantly change the observation point. The method of using the optical microscope to detect defects in the original glass piece is to use the optical microscope to detect defects in the original glass piece. In addition, since the dust adhering to the front of the original glass piece will have a luminous visual effect due to the irradiation of light, it is easy to be confused with the defects inside the original glass piece, which is easy to cause false detection. Similarly, when the method of lighting from the back of the original glass piece is adopted, since the light can penetrate the original glass piece and illuminate the front of the original glass piece, when the original glass piece is observed from the front of the original glass piece, it will also be greatly disturbed by the light. Therefore, there is also the problem of difficulty in detecting defects in the original glass piece. The present invention cleverly solves the interference of light in the detection process by lighting the side of the original glass piece, so that the defects in the original glass piece are easier to detect.

[0043] Further, it further includes a background plate 4, and the background plate 4 is disposed on one side of the light source fixing member 1.

[0044] By providing the background plate 4, when inspecting the raw glass sheet, the defects inside the raw glass sheet can form a sharp contrast with the background plate 4, making the defects inside the raw glass sheet more prominently displayed. As a preferred embodiment, the background plate 4 has a relatively deep color, such as black, so that the defects inside the raw glass sheet can form a sharp contrast with the back plate, and thus the defects inside the raw glass sheet are more easily detected.

[0045] Further, the positioning member 3 includes a carrying strip 31, the carrying strip 31 is disposed on the outer wall of the light source fixing member 1 and on one side of the first space 11, and the carrying strip 31 is arranged along the length direction of the first space 11; the carrying strip 31 protrudes from the outer wall of the light source fixing member 1.

[0046] The carrying strip 31 is used to position the raw glass sheet. During inspection, the surface of the raw glass sheet is leaned against the surface of the carrying strip 31 facing the first space 11, so that at least part of the side surface of the raw glass sheet is aligned with the first space 11, thereby enabling the light source to irradiate the side surface of the raw glass sheet.

[0047] Further, the positioning member 3 further includes a light-shielding strip 32, the light-shielding strip 32 is disposed on the outer wall of the light source positioning member and on the other side of the first space 11, and the light-shielding strip 32 extends along the length direction of the first space 11; a light guide channel is formed between the light-shielding strip 32 and the carrying strip 31, and the end of the carrying strip 31 away from the light source fixing member 1 protrudes from the end of the light-shielding strip 32 away from the light source fixing member 1.

[0048] Since the light emitted by the light-emitting unit 2 is divergent, in order to prevent the light-emitting unit 2 from irradiating the inspection operator or the industrial vision inspection device, the present invention provides the light-shielding strip 32 to block the light. A light guide channel is formed between the light-shielding strip 32 and the carrying strip 31, and part of the light of the light-emitting unit 2 passes through the light guide channel and irradiates out, while the remaining light is blocked by the carrying strip 31 and the light-shielding strip 32, thereby preventing the light of the light source from interfering with the inspection of the raw glass sheet.

[0049] Further, there is a spacing between the background plate 4 and the first space 11.

[0050] When detecting the raw glass sheet, the raw glass sheet does not contact the background plate 4, that is, the raw glass sheet is suspended above the background plate 4. In this way, a visual focus difference can be formed between the raw glass sheet and the background plate 4. When the visual focus is on the raw glass sheet, even if there is dust on the surface of the background plate 4, it will not cause misdetection, thus avoiding interference with the detection of the raw glass sheet due to factors such as dust on the background plate 4; in addition, this can also prevent dust on the surface of the background plate 4 from adhering to the surface of the raw glass sheet during the detection process.

[0051] Further, the height of the light guide channel is 1.5 mm to 5 mm.

[0052] When the height of the light guide channel is less than 1.5 mm, since the light guide channel is too narrow, the light intensity irradiated on the side of the raw glass sheet is reduced, making it difficult to achieve the required detection effect; when the height of the light guide channel is greater than 5 mm, the width of the light shielding strip 32 needs to be increased so that the light shielding strip 32 can play a light shielding effect. However, this will increase the distance between the side of the raw glass sheet and the light emitting unit 2, and also reduce the light intensity irradiated on the side of the raw glass sheet, affecting the detection effect.

[0053] Further, the carrier strip 31 protrudes from the light shielding strip 32 by 2 mm to 4 mm.

[0054] During detection, the carrier strip 31 serves to carry the raw glass sheet. The edge of the raw glass sheet is supported by the part of the carrier strip 31 that protrudes from the light shielding strip 32. Of course, for a better positioning effect, the side of the raw glass sheet can be abutted against the side of the light shielding strip 32. In this way, it will not block the raw glass sheet and can position the raw glass sheet so that the side of the raw glass sheet is just aligned with the light guide channel; when the width by which the carrier strip 31 protrudes from the light shielding strip 32 is less than 2 mm, the area for carrying the raw glass sheet is too small, and it is not easy to place the raw glass sheet on the carrier strip 31, and the raw glass sheet is easily broken; when the width by which the carrier strip 31 protrudes from the light shielding strip 32 is greater than 4 mm, the area of the carrier strip 31 blocking the raw glass sheet is too large, affecting the detection effect of the raw glass sheet.

[0055] A method for detecting glass, using the above-mentioned glass detection device, further includes the following steps:

[0056] Step A, turn on the light emitting unit 2 so that the light emitting unit 2 irradiates light outside the light source fixing member 1.

[0057] Step B, take the raw glass sheet from the area to be inspected and place the edge of the raw glass sheet against the positioning member 3 so that the side of the raw glass sheet is aligned with the first space 11.

[0058] Step C, detect whether there are defects inside the raw glass sheet:

[0059] If there are defects inside the raw glass sheet, the raw glass sheet is placed in the defective product area;

[0060] If there are no defects inside the raw glass sheet, the raw glass sheet is placed in the non-defective product area;

[0061] Steps B and C are repeatedly executed.

[0062] When inspecting the raw glass sheet, the raw glass sheet is leaned against the positioning member 3 manually or by a robotic arm, so that the side surface of the raw glass sheet approaches and aligns with the first space 11. The light emitted by the light-emitting unit 2 in the first space 11 irradiates into the raw glass sheet from the side wall of the raw glass sheet. Since the inner surface of the raw glass sheet can reflect light, the light irradiated into the raw glass sheet by the light source can be continuously reflected inside the raw glass sheet. At this time, the whole raw glass sheet will become very translucent. However, when there are defects such as dust and bubbles inside the raw glass sheet, due to the continuous reflection of light inside the raw glass sheet, when the light is reflected to the surface of the defects such as dust and bubbles, it will make the surface of the defects such as dust and bubbles show a visual effect of emitting light, so that the defects such as dust and bubbles inside the raw glass sheet will be very clearly displayed, thus it is convenient to detect the defects inside the raw glass sheet, and then select the raw glass sheets with defects, and then place the raw glass sheets into the defective product area manually or by a robotic arm. By performing Steps B and C on each raw glass sheet in the inspection area one by one, each raw glass sheet in the inspection area can be inspected separately to select out the defective glass sheets one by one.

[0063] Furthermore, in Step C, an industrial vision inspection device is used to inspect the raw glass sheet.

[0064] Since the present invention irradiates the raw glass sheet by means of side lighting, not only can the defects inside the raw glass sheet be prominently displayed, but also the light interference during detection is significantly reduced. Therefore, the industrial vision inspection device can accurately detect the defects inside the raw glass sheet.

[0065] In the description of this specification, the description with reference to terms such as "one embodiment", "certain embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0066] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific embodiments of the present invention without creative work, and these equivalent variations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A glass detection device, characterized in that: include: A light source fixing member, wherein the interior of the light source fixing member has a first space, and one side wall of the first space is connected to the exterior of the light source fixing member; a light emitting unit, the light emitting unit being disposed in the first space and configured to emit light and irradiate to the outside of the light source fixing member; A positioning member is used to position the glass original piece so that the side of the glass original piece is opposite to the first space, so that the light emitted by the light-emitting unit enters the interior of the glass original piece from the side of the glass original piece.

2. A glass detection device according to claim 1, characterized in that: It also includes a background plate, which is arranged on one side of the light source fixing member.

3. A glass detection device according to claim 1, characterized in that: The positioning component includes a bearing bar, which is arranged on the outer wall of the light source fixing component and located on one side of the first space, and is arranged along the length direction of the first space; the bearing bar protrudes from the outer wall of the light source fixing component.

4. A glass detection device according to claim 3, characterized in that: The positioning component also includes a shading strip, which is arranged on the outer wall of the light source positioning component and is located on the other side of the first space, and the shading strip extends along the length direction of the first space; a light guiding channel is formed between the shading strip and the supporting strip, and one end of the supporting strip away from the light source fixing component protrudes from the other end of the shading strip away from the light source fixing component.

5. A glass detection device according to claim 2, characterized in that: A distance is left between the background plate and the first space.

6. A glass detection device according to claim 1, characterized in that: The height of the light guide channel is 1.5 mm to 5 mm.

7. A glass detection device according to claim 4, characterized in that: The bearing strip protrudes from the shading strip by 2 mm to 4 mm.

8. A glass detection method, characterized in that: Using a glass detection device as described in any one of claims 1 to 7, further comprising the following steps: Step A, turning on the light-emitting unit so that the light-emitting unit radiates light to the outside of the light source fixing member; Step B, taking the original glass sheet from the inspection area, and placing the edge of the original glass sheet against the positioning member so that the side of the original glass sheet is aligned with the first space; Step C, check whether there are defects inside the original glass sheet: If there are defects inside the original glass, the original glass will be placed in the defective area; If there are no defects inside the original glass, place the original glass in the good product area; Repeat steps B and C.

9. A glass detection method according to claim 8, characterized in that: In the step C, an industrial visual inspection device is used to inspect the original glass sheet.

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