Surface flaw detection device based on new material mobile phone screen glass

Abstract

The invention belongs to the technical field of transparent material detection, and discloses a surface flaw detection device based on new material mobile phone screen glass, the surface flaw detection device comprises a detection frame and further comprises a protection assembly, the right side of the detection frame is provided with a placement hole, and the inner wall of the detection frame is fixedly provided with a bearing frame; the protection assembly comprises a detection frame, a guide sliding plate, a liquid storage frame, a shielding plate, a linkage plate, a shielding frame, a linkage frame, an elastic telescopic rod and an elastic hole, the detection frame is fixedly installed at the top of the bearing frame, the guide sliding plate is slidably installed on the inner wall of the detection frame, and the liquid storage frame is fixedly installed at the top of the guide sliding plate. Negative pressure is generated in the liquid storage frame to enable the shielding plate to move forwards, the shielding plate moves forwards to break away from contact with the defect detector and remove shielding of the defect detector, and the shielding plate slowly moves backwards so that the shielding plate can be prevented from violently rubbing a lens of the defect detector due to inertia. And the reduction of the detection precision caused by lens damage is further prevented.

Description

Technical Field

[0001] This invention belongs to the field of transparent material testing, specifically relating to a surface defect detection device for mobile phone screen glass based on a new material. Background Technology

[0002] The new glass material used to manufacture mobile phone screens has extremely high requirements for surface quality. Any tiny scratch or foreign object can seriously affect the display effect and user experience, so defect detection is required before leaving the factory.

[0003] Patent CN209495979U relates to a glass defect detection device. In this device, a first support frame and a second support frame have a small gap, allowing the guide belt to smoothly transport the glass to be inspected from the first support frame to the second. As the glass moves from the first to the second support frame, the detection device scans the area to be inspected without contacting any other objects, ensuring the accuracy of the detection results. Furthermore, a third support frame is provided, with its top set in black. This serves two purposes: firstly, the third support frame deflects the guide belt, allowing the first and second support frames to form a scanning area for detection; secondly, the black top of the third support frame does not affect the detection results, thus ensuring the accuracy of the detection structure.

[0004] In the aforementioned patent, the guide belt is turned by the third support frame, so that the first support frame and the second support frame can form a scanning area for detection. On the other hand, the top of the third support frame is set to black, which will not affect the detection results and can ensure the accuracy of the detection results. However, the lens of the defect detector is prone to scratches or stains, which may cause false detection of the glass. At the same time, natural light will interfere with the detection accuracy. Furthermore, the glass itself is relatively smooth and is prone to falling during placement, causing the glass to chip. Therefore, it is necessary to design a surface defect detection device based on new material mobile phone screen glass to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a surface defect detection device for mobile phone screen glass based on a new material, in order to solve the problems that the lens of the defect detector is prone to scratches or stains, which can cause false detection of the glass. At the same time, natural light can interfere with the detection accuracy, and the glass itself is relatively smooth and is easy to fall during placement, causing the glass to chip.

[0006] To achieve the above objectives, the present invention provides a surface defect detection device for mobile phone screen glass based on a novel material, including a detection frame and a protective component. The detection frame has a placement hole on its right side, and a support frame is fixedly installed on the inner wall of the detection frame. The protective component includes a detection frame, a guide plate, a liquid storage frame, a shielding plate, a linkage plate, a shielding frame, a linkage frame, an elastic telescopic rod, and a spring hole. The detection frame is fixedly installed on the top of the support frame, the guide plate is slidably installed on the inner wall of the detection frame, the liquid storage frame is fixedly installed on the top of the guide plate, and the shielding plate is slidably installed on the inner wall of the liquid storage frame. The linkage plate is slidably installed inside the liquid storage frame. The shielding frame is fixedly installed at the bottom of the shielding plate, the linkage frame is fixedly installed at the front of the liquid storage frame, the elastic telescopic rod is disposed between the shielding frame and the linkage frame, and the elastic hole is opened on the circumferential surface of the elastic telescopic rod. The shielding plate is used to shield the defect detector, the elastic telescopic rod is used to limit the movement speed of the shielding frame, and the guide plate is used to prevent the defect detector from shaking. The liquid storage frame is filled with liquid, and the defect detector is disposed at the bottom of the guide plate. The negative pressure generated inside the liquid storage frame causes the shielding plate to move forward. The forward movement of the shielding plate will disengage from the defect detector and release the shielding of the defect detector.

[0007] In one or more embodiments of the present invention, a sealing ring is provided between the liquid storage frame and the shielding plate to increase the sealing performance between the liquid storage frame and the shielding plate; a sealing ring is provided between the liquid storage frame and the linkage plate to increase the sealing performance between the liquid storage frame and the linkage plate; a sealing strip is provided between the free end and the fixed end of the elastic telescopic rod to increase the sealing performance between the free end and the fixed end of the elastic telescopic rod; and a spring is provided between the liquid storage frame and the linkage plate to support the linkage plate.

[0008] In one or more embodiments of the present invention, the linkage plate abuts against the top of the inner wall of the detection frame, the top of the shielding plate is provided with a rubber plate, the rubber plate can prevent the shielding plate from scratching the lens, the detection frame is used to place glass, and the shielding plate slowly moves to the rear to slowly block the defect detector.

[0009] In one or more embodiments of the present invention, a light-shielding component and a support component are further included. The light-shielding component is used to shield external light sources during detection, and the support component is used to prevent the glass from falling. The light-shielding component includes a connecting plate, a light-shielding plate, a telescopic spring rod, a limiting hole, a load-bearing frame, and an elastic telescopic block. When the light-shielding plate moves downward, it causes the connecting plate to move downward. When the connecting plate moves downward, it blocks the placement hole and thus blocks the external natural light. The light-shielding plate is slidably installed inside the detection frame. The connecting plate is fixedly installed on the left side of the light-shielding plate. The telescopic spring rod is fixedly installed between the connecting plate and the detection frame. The limiting hole is opened on the right side of the light-shielding plate. The load-bearing frame is fixedly installed on the right side of the detection frame, and the elastic telescopic block is fixedly installed on the inner wall of the load-bearing frame.

[0010] In one or more embodiments of the present invention, the free end of the elastic telescopic block abuts against the light-shielding plate, the connecting plate contacts the bottom of the guide plate, and the elastic telescopic block is used to limit the light-shielding plate. Pushing the free end of the elastic telescopic block to move to the right and disengage from the contact with the limiting hole can prevent the detection frame from being accidentally opened due to accidental contact with the linear motor by pushing the elastic telescopic block. The seal will only be released when the operator consciously intervenes manually, thereby ensuring the safety of the detection environment.

[0011] In one or more embodiments of the present invention, the support assembly includes a rack, a rubber roller, a first gear, a support roller, and a second gear. The support roller rotates under the pressure of the glass, and the rotation of the support roller supports the glass. The rack is fixedly installed on the left side of the light shield. The rubber roller is rotatably installed on the inner wall of the detection frame. The first gear is fixedly installed on the circumferential surface of the rubber roller. The support roller is rotatably installed on the inner wall of the detection frame. The second gear is fixedly installed on the circumferential surface of the support roller. The support can prevent the glass from falling during loading and unloading, causing the glass to break and chip.

[0012] In one or more embodiments of the present invention, the bump ring and the support ring are fixedly installed on the circumferential surface of the rubber roller and the support ring is fixedly installed on the circumferential surface of the support roller. A spring is provided between the rubber roller and the detection frame. The spring can support the rubber roller. The rotation of the support roller reduces the friction when the glass is fed, which can avoid surface scratches caused by friction during the loading and unloading process.

[0013] In one or more embodiments of the present invention, gear one meshes with gear two, the support ring is elastic, the support ring contacts the protrusion ring, and the rotation of the rubber roller and the support roller causes debris to fall off the surfaces of the rubber roller and the support roller.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the shielding plate is pushed backward by the liquid inside the liquid storage frame and resumes its shielding of the defect detector. By using the shielding plate to form a physical barrier when not in the detection state, it can prevent external debris or accidental splashes from contaminating or scratching the precision detection lens, thereby ensuring the accuracy of glass defect detection. Furthermore, the external gas slowly enters the elastic telescopic rod through the elastic hole, causing the shielding frame and shielding plate to slowly move backward. The shielding plate slowly moves backward to shield the defect detector. The slow backward movement of the shielding plate can prevent the shielding plate from violently rubbing against the defect detector lens due to inertia, further preventing lens damage and a decrease in detection accuracy.

[0015] 2. This invention, by moving the connecting plate downwards, blocks the placement hole and thus blocks the natural light from the outside. Closing the placement hole cuts off the path of natural light from the outside, eliminates the interference of ambient light on imaging, and ensures that minor defects on the glass can be clearly identified and prevents missed detection.

[0016] 3. In this invention, after the defect detection instrument finishes its operation, the free end of the elastic telescopic block is pushed to the right and disengages from the contact with the limiting hole. The light shield moves upward to reset and releases the seal on the detection frame. By pushing the elastic telescopic block, the detection frame can be prevented from being accidentally opened due to accidental contact with the linear motor. The seal will only be released when the operator consciously intervenes manually, thus ensuring the safety of the detection environment.

[0017] 4. In this invention, the support roller rotates due to the pressure of the glass, and the rotation of the support roller supports the glass. The rotation of the support roller reduces the friction when the glass is loaded, which can avoid surface scratches caused by friction during loading and unloading. At the same time, it can prevent the glass from falling and breaking or chipping during loading and unloading.

[0018] 5. In this invention, the rotation of gear two drives the rotation of the support roller. The rotation of the rubber roller and the support roller causes the debris on the surface of the rubber roller and the support roller to fall off. At the same time, the convex ring and the support ring vibrate, causing the rubber roller and the support roller to vibrate. By utilizing the dual effects of vibration and centrifugal force, the thoroughness of cleaning can be greatly improved compared to simple rotation cleaning, and secondary contamination of the glass by debris can be prevented. Attached Figure Description

[0019] Figure 1 This is a schematic diagram showing the positions of the detection frame and the placement hole in one embodiment of the present invention; Figure 2 This is a half-sectional view of the detection frame in one embodiment of the present invention; Figure 3 This is a schematic diagram showing the positions of the liquid storage frame and the linkage plate in one embodiment of the present invention; Figure 4 This is a schematic diagram showing the positions of the protrusion ring and the support ring in one embodiment of the present invention; Figure 5 This is a cross-sectional view of the liquid storage frame in one embodiment of the present invention; Figure 6 This is a schematic diagram of the internal structure of the detection frame in one embodiment of the present invention; Figure 7 This is a schematic diagram showing the positional structure of the light-shielding plate and the rack in one embodiment of the present invention; Figure 8 This is a schematic diagram showing the positional structure of the connecting plate and the telescopic spring rod in one embodiment of the present invention.

[0020] Explanation of key figure labels: 1. Detection frame; 2. Placement hole; 3. Support bracket; 4. Detection frame; 5. Guide plate; 6. Liquid storage frame; 7. Shielding plate; 8. Linkage plate; 9. Shielding frame; 10. Linkage frame; 11. Elastic telescopic rod; 12. Elastic hole; 121. Connecting plate; 122. Light shielding plate; 123. Telescopic spring rod; 124. Limiting hole; 125. Load-bearing frame; 126. Elastic telescopic block; 131. Rack; 132. Rubber roller; 133. Gear one; 134. Support roller; 135. Gear two; 136. Protrusion ring; 137. Support ring. Detailed Implementation

[0021] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0022] Reference Figure 1-7 One embodiment of the present invention is: a surface defect detection device for mobile phone screen glass based on a new material, including a detection frame 1 and a protective component. The detection frame 1 has a placement hole 2 on its right side, and a support frame 3 is fixedly installed on the inner wall of the detection frame 1. The protective component includes a detection frame 4, a guide plate 5, a liquid storage frame 6, a shielding plate 7, a linkage plate 8, a shielding frame 9, a linkage frame 10, an elastic telescopic rod 11, and an elastic hole 12. The detection frame 4 is fixedly installed on the top of the support frame 3, the guide plate 5 is slidably installed on the inner wall of the detection frame 1, the liquid storage frame 6 is fixedly installed on the top of the guide plate 5, the shielding plate 7 is slidably installed on the inner wall of the liquid storage frame 6, and the linkage plate 8 is slidably installed on the inner wall of the liquid storage frame 6. The shielding frame 9 is fixedly installed at the bottom of the shielding plate 7, the linkage frame 10 is fixedly installed at the front of the liquid storage frame 6, the elastic telescopic rod 11 is set between the shielding frame 9 and the linkage frame 10, and the elastic hole 12 is opened on the circumferential surface of the elastic telescopic rod 11. The shielding plate 7 is used to shield the defect detector, the elastic telescopic rod 11 is used to limit the movement speed of the shielding frame 9, and the guide plate 5 is used to prevent the defect detector from shaking. The liquid storage frame 6 is filled with liquid, and the defect detector is set at the bottom of the guide plate 5. The shielding plate 7 forms a physical barrier when closed in the non-detection state, which can prevent external debris or accidental splashes from contaminating or scratching the precision detection lens, thereby ensuring the accuracy of glass defect detection.

[0023] A sealing ring is provided between the liquid storage frame 6 and the shielding plate 7 to increase the sealing between them. A sealing ring is provided between the liquid storage frame 6 and the linkage plate 8 to increase the sealing between them. A sealing strip is provided between the free end and the fixed end of the elastic telescopic rod 11 to increase the sealing between them. A spring is provided between the liquid storage frame 6 and the linkage plate 8 to support the linkage plate 8.

[0024] The linkage plate 8 abuts against the top of the inner wall of the detection frame 1. A rubber plate is provided on the top of the shielding plate 7. The rubber plate can prevent the shielding plate 7 from scratching the lens. The detection frame 4 is used to place the glass. The shielding plate 7 moves slowly to the rear to slowly block the defect detector. The slow movement of the shielding plate 7 to the rear can avoid the shielding plate 7 violently rubbing against the lens of the defect detector due to inertia, and further prevent the lens from being damaged, which would lead to a decrease in detection accuracy.

[0025] During operation: Place the glass through placement hole 2 onto the top of the inspection frame 4. Once the glass is stable on top of the inspection frame 4, a linear motor is installed at the top of the inspection frame 1, and the output end of the linear motor is fixedly connected to the guide plate 5. Activating the linear motor moves the guide plate 5 downwards. The downward movement of the guide plate 5 moves the defect detector downwards, simultaneously moving the liquid storage frame 6 downwards. The downward movement of the liquid storage frame 6 moves the linkage plate 8 downwards. The downward movement of the linkage plate 8 disengages from the top of the inner wall of the inspection frame 1. Once the linkage plate 8 disengages from the top of the inner wall of the inspection frame 1... After contact, the linkage plate 8 moves upward and resets under the elastic force of spring 1. This upward movement of the linkage plate 8 draws liquid from the liquid storage frame 6, causing the liquid inside to move upward. This upward movement of the linkage plate 8 creates a negative pressure inside the liquid storage frame 6, causing the shielding plate 7 to move forward. The forward movement of the shielding plate 7 disengages from the defect detector and removes its obstruction. Once the obstruction is removed, the defect detector begins to inspect the glass for defects. After the measuring instrument operation is completed, the linear operation causes the guide plate 5 to move upward. The upward movement of the guide plate 5 causes the defect detector to move upward, and simultaneously, the upward movement of the guide plate 5 causes the liquid storage frame 6 to move upward. The upward movement of the liquid storage frame 6 causes the linkage plate 8 to move upward. The linkage plate 8, moving upward, contacts the detection frame 1 and squeezes it. The linkage plate 8, under the reaction force of squeezing the detection frame 1, moves downward to reset. The downward movement of the linkage plate 8, in turn, squeezes the liquid inside the liquid storage frame 6. The liquid inside the liquid storage frame 6, squeezed downward by the linkage plate 8, moves downward. The internal liquid moves downwards and compresses the shielding plate 7. The shielding plate 7, compressed by the liquid inside the liquid storage frame 6, moves backwards and resumes its shielding of the defect detector. At the same time, the backward movement of the shielding plate 7 causes the elastic telescopic rod 11 to move backwards. The backward movement of the elastic telescopic rod 11 allows the external gas to slowly enter the interior of the elastic telescopic rod 11 through the elastic hole 12. The external gas slowly entering the interior of the elastic telescopic rod 11 through the elastic hole 12 causes the shielding frame 9 and the shielding plate 7 to slowly move backwards. The slow backward movement of the shielding plate 7 slowly shields the defect detector.

[0026] Reference Figure 1-8Based on the above embodiments, another embodiment of the present invention further includes a light-shielding component and a support component. The light-shielding component is used to shield external light sources during detection, and the support component is used to prevent the glass from falling. The light-shielding component includes a connecting plate 121, a light-shielding plate 122, a telescopic spring rod 123, a limiting hole 124, a load-bearing frame 125, and an elastic telescopic block 126. The light-shielding plate 122 is slidably installed inside the detection frame 1. The connecting plate 121 is fixedly installed on the left side of the light-shielding plate 122. The telescopic spring rod 123 is fixedly installed between the connecting plate 121 and the detection frame 1. The limiting hole 124 is opened on the right side of the light-shielding plate 122. The load-bearing frame 125 is fixedly installed on the right side of the detection frame 1. The elastic telescopic block 126 is fixedly installed on the inner wall of the load-bearing frame 125. The closed placement hole 2 cuts off the entry path of external natural light, eliminates the interference of ambient light on imaging, and ensures that minor defects on the glass can be clearly identified and prevents missed detection.

[0027] The free end of the elastic telescopic block 126 abuts against the light shield 122, and the connecting plate 121 contacts the bottom of the guide plate 5. The elastic telescopic block 126 is used to limit the light shield 122. By pushing the elastic telescopic block 126, the detection frame 1 can be prevented from being accidentally opened due to accidental contact with the linear motor. The seal will only be released when the operator consciously intervenes manually, thus ensuring the safety of the detection environment.

[0028] The support assembly includes a rack 131, a rubber roller 132, a first gear 133, a support roller 134, and a second gear 135. The support roller 134 rotates under the pressure of the glass, thus supporting the glass. The rack 131 is fixedly installed on the left side of the light shield 122. The rubber roller 132 is rotatably installed on the inner wall of the detection frame 1. The first gear 133 is fixedly installed on the circumferential surface of the rubber roller 132. The support roller 134 is rotatably installed on the inner wall of the detection frame 1. The second gear 135 is fixedly installed on the circumferential surface of the support roller 134. The support can prevent the glass from falling and breaking during loading and unloading, thus preventing the glass from chipping or breaking.

[0029] The bump ring 136 and the support ring 137 are fixedly installed on the circumferential surface of the rubber roller 132 and the support ring 137 is fixedly installed on the circumferential surface of the support roller 134. A spring is provided between the rubber roller 132 and the detection frame 1. The spring can support the rubber roller 132. The rotation of the support roller 134 reduces the friction when the glass is fed, which can avoid surface scratches caused by friction during the loading and unloading process.

[0030] Gear 133 meshes with gear 2135, support ring 137 is elastic, support ring 137 contacts convex ring 136, rubber roller 132 and support roller 134 rotate to throw off the debris on the surface of rubber roller 132 and support roller 134. By utilizing the dual action of shaking and centrifugation, the thoroughness can be greatly improved compared with simple rotation cleaning, and secondary contamination of glass by debris can be prevented.

[0031] During operation, the guide plate 5 moves downward and contacts the light shield 122, pressing it down. The light shield 122 moves downward under the pressure of the guide plate 5, pulling the free end of the telescopic spring rod 123. The free end of the telescopic spring rod 123 moves downward and stores force. Simultaneously, the downward movement of the light shield 122 causes the connecting plate 121 to move downward, blocking the placement hole 2 and thus blocking natural light. At the same time, the downward movement of the light shield 122 aligns the free end of the elastic telescopic block 126 with the limiting hole 124. Once the limiting hole 124 and the free end of the elastic telescopic block 126 are aligned... After alignment, the free end of the elastic telescopic block 126 moves to the left under its own elastic force. The leftward movement of the free end of the elastic telescopic block 126 will contact the limiting hole 124 and limit the light shield 122. After the defect detection instrument finishes its operation, push the free end of the elastic telescopic block 126 to the right and disengage from the limiting hole 124. The disengagement of the free end of the elastic telescopic block 126 from the limiting hole 124 will release the limit on the light shield 122. After the limit on the light shield 122 is released, the light shield 122 moves upward and resets under the elastic force of the telescopic spring rod 123. The upward movement of the light shield 122 resets the seal on the detection frame 1 and allows the glass to be removed through the placement hole 2.

[0032] The downward movement of the light-shielding plate 122 causes the rack 131 to move downward. The rack 131 then contacts and presses against gear 133, causing it to rotate. This rotation drives the rubber roller 132 to rotate. Simultaneously, the rotation of gear 133 presses against gear 135, causing it to rotate. This rotation drives the support roller 134 to rotate. The rotation of the rubber roller 132 and support roller 134 causes debris to fall from their surfaces. Simultaneously, the rotation of the rubber roller 132 drives the protrusion ring 1... When the convex ring 136 rotates, it will contact the support ring 137 and squeeze the support ring 137. The support ring 137 will deform under the pressure of the convex ring 136. The impact between the convex ring 136 and the support ring 137 will cause vibration. The vibration of the convex ring 136 and the support ring 137 will drive the rubber roller 132 and the support roller 134 to vibrate, thereby improving the effect of debris throwing. When the glass is placed on the top of the inspection frame 4, the glass will contact the support roller 134 and squeeze the support roller 134. The support roller 134 will rotate under the pressure of the glass. The rotation of the support roller 134 will support the glass, thereby preventing the glass from falling during loading and unloading.

[0033] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A surface defect detection device for mobile phone screen glass based on a new material, comprising a detection frame (1), characterized in that, It also includes a protective component, a light-shielding component and a support component. The detection frame (1) has a placement hole (2) on the right side and a support frame (3) is fixedly installed on the inner wall of the detection frame (1). The protective assembly includes a detection frame (4), a guide plate (5), a liquid storage frame (6), a shielding plate (7), a linkage plate (8), a shielding frame (9), a linkage frame (10), an elastic telescopic rod (11), and an elastic hole (12). The detection frame (4) is fixedly installed on the top of the support frame (3). The guide plate (5) is slidably installed on the inner wall of the detection frame (1). The liquid storage frame (6) is fixedly installed on the top of the guide plate (5). The shielding plate (7) is slidably installed on the inner wall of the liquid storage frame (6). The linkage plate (8) is slidably installed on the inner wall of the liquid storage frame (6). The shielding frame (9)... The shielding plate (7) is fixedly installed at the bottom, the linkage frame (10) is fixedly installed at the front side of the liquid storage frame (6), the elastic telescopic rod (11) is set between the shielding frame (9) and the linkage frame (10), the elastic hole (12) is opened on the circumferential surface of the elastic telescopic rod (11), the shielding plate (7) is used to shield the defect detector, the elastic telescopic rod (11) is used to limit the moving speed of the shielding frame (9), the guide plate (5) is used to prevent the defect detector from shaking, the liquid storage frame (6) is filled with liquid, and the defect detector is set at the bottom of the guide plate (5); The light-shielding component is used to shield external light sources during testing, and the support component is used to prevent the glass from falling.

2. The surface defect detection device for mobile phone screen glass based on a new material according to claim 1, characterized in that, A sealing ring is provided between the liquid storage frame (6) and the shielding plate (7), a sealing ring is provided between the liquid storage frame (6) and the linkage plate (8), a sealing strip is provided between the free end and the fixed end of the elastic telescopic rod (11), and a spring is provided between the liquid storage frame (6) and the linkage plate (8).

3. The surface defect detection device for mobile phone screen glass based on a new material according to claim 2, characterized in that, The linkage plate (8) abuts against the top of the inner wall of the detection frame (1), the top of the shielding plate (7) is provided with a rubber plate, and the detection frame (4) is used to place glass.

4. The surface defect detection device for mobile phone screen glass based on a new material according to claim 3, characterized in that, The light-shielding assembly includes a connecting plate (121), a light-shielding plate (122), a telescopic spring rod (123), a limiting hole (124), a load-bearing frame (125), and an elastic telescopic block (126). The light-shielding plate (122) is slidably installed inside the detection frame (1). The connecting plate (121) is fixedly installed on the left side of the light-shielding plate (122). The telescopic spring rod (123) is fixedly installed between the connecting plate (121) and the detection frame (1). The limiting hole (124) is opened on the right side of the light-shielding plate (122). The load-bearing frame (125) is fixedly installed on the right side of the detection frame (1). The elastic telescopic block (126) is fixedly installed on the inner wall of the load-bearing frame (125).

5. The surface defect detection device for mobile phone screen glass based on a new material according to claim 4, characterized in that, The free end of the elastic telescopic block (126) abuts against the light shield (122), the connecting plate (121) contacts the bottom of the guide plate (5), and the elastic telescopic block (126) is used to limit the light shield (122).

6. The surface defect detection device for mobile phone screen glass based on a new material according to claim 5, characterized in that, The support assembly includes a rack (131), a rubber roller (132), a first gear (133), a support roller (134), and a second gear (135). The rack (131) is fixedly installed on the left side of the light shield (122). The rubber roller (132) is rotatably installed on the inner wall of the detection frame (1). The first gear (133) is fixedly installed on the circumferential surface of the rubber roller (132). The support roller (134) is rotatably installed on the inner wall of the detection frame (1). The second gear (135) is fixedly installed on the circumferential surface of the support roller (134).

7. The surface defect detection device for mobile phone screen glass based on a new material according to claim 6, characterized in that, The bump ring (136) and the support ring (137) are fixedly installed on the circumferential surface of the rubber roller (132) and the support ring (137) is fixedly installed on the circumferential surface of the support roller (134). A spring is provided between the rubber roller (132) and the detection frame (1).

8. The surface defect detection device for mobile phone screen glass based on a new material according to claim 7, characterized in that, The gear one (133) meshes with the gear two (135), the support ring (137) is elastic, and the support ring (137) contacts the protrusion ring (136).

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