Appearance inspection apparatus for metal ring glass protective cover

Abstract

The application discloses metal ring glass protective cover appearance detection equipment and belongs to the technical field of appearance detection. The appearance detection equipment comprises a rotating disc, a feeding mechanism, a metal ring detection mechanism, a glass detection mechanism and a discharging mechanism. At least one clamping mechanism is arranged on the rotating disc and is used for clamping the metal ring glass protective cover. The feeding mechanism is used for feeding the metal ring glass protective cover to the clamping mechanism. The metal ring detection mechanism is used for appearance detection of the metal ring. The glass detection mechanism is used for appearance detection of the glass. The discharging mechanism is used for discharging the detected metal ring glass protective cover on the clamping mechanism. The appearance detection equipment can automatically complete appearance detection of the metal ring glass protective cover, has high detection efficiency, low missed detection rate, and can guarantee consistency of detection standards and detection accuracy.

Description

Technical Field

[0001] This invention relates to the field of appearance inspection technology, and in particular to an appearance inspection device for a metal ring glass protective cover. Background Technology

[0002] In the assembly of mobile phone cameras, the metal ring glass cover is a component that provides protection for the camera. The metal ring glass cover consists of a metal ring and a layer of glass on the upper surface of the metal ring. Assembling a substandard metal ring glass cover onto a mobile phone camera will render the entire camera unusable. Therefore, it is necessary to conduct batch visual inspections of the metal ring glass covers to check for defects in the metal ring and the glass.

[0003] Current technology relies on manual inspection, where workers visually inspect the metal ring and glass cover for defects. This manual inspection method is not only inefficient and prone to missed detections, but also suffers from poor consistency in inspection standards and low accuracy. Summary of the Invention

[0004] The purpose of this invention is to provide an appearance inspection device for metal ring glass protective covers, which can solve the problems of low efficiency, high missed detection rate, poor consistency of inspection standards and poor inspection accuracy caused by manual inspection.

[0005] To achieve the above objectives, the following technical solution is provided:

[0006] Visual inspection equipment for metal ring glass protective covers includes:

[0007] A turntable that rotates about a vertical axis; at least one clamping mechanism is provided on the turntable for clamping a metal ring glass protective cover;

[0008] A feeding mechanism is used to feed the metal ring glass protective cover onto the clamping mechanism;

[0009] Metal ring inspection agency, used for visual inspection of metal rings;

[0010] Glass inspection agencies are used for visual inspection of glass.

[0011] The unloading mechanism is used to unload the metal ring glass protective cover that has been detected and completed on the clamping mechanism.

[0012] Furthermore, the clamping mechanism includes:

[0013] Two clamping blocks are arranged opposite to each other along a first direction;

[0014] Two linear drive units are disposed on the turntable, and the output ends of each of the two linear drive units are connected to a clamping block to drive the two clamping blocks to move closer or further apart from each other along the first direction;

[0015] A clamping groove is provided on the side of one of the clamping blocks facing the other clamping block.

[0016] Furthermore, the clamping groove extends through the clamping block from top to bottom, and a positioning through hole is provided on the turntable;

[0017] The feeding mechanism includes:

[0018] Lifting drive components;

[0019] A lifting column is located at the output end of the lifting drive component; the lifting column can pass through the positioning through hole from bottom to top and is located between the two clamping blocks, and the top surface of the lifting column protrudes above the clamping blocks; the metal ring glass protective cover is loaded onto the top of the lifting column.

[0020] Furthermore, the lifting column is provided with a receiving cavity, and the receiving cavity has a built-in sensor; the top surface of the lifting column has a sensing through hole communicating with the receiving cavity, and the sensor senses the metal ring glass protective cover through the sensing through hole.

[0021] Furthermore, the two clamping blocks are a first clamping block and a second clamping block, the first clamping block having a first side away from the center of the turntable and a second side close to the center of the turntable in the first direction, the second clamping block being disposed on the outer edge of the turntable and facing the first side of the first clamping block; the two linear drive members are arranged side by side and are both located on the second side of the first clamping block.

[0022] Furthermore, the two clamping blocks are parallel to and spaced apart from the turntable; the second clamping block is connected to the output end of the corresponding linear drive unit via a second bracket; the second bracket is located between the clamping block and the turntable and is connected to the bottom of the second clamping block.

[0023] Furthermore, the turntable is provided with four clamping mechanisms, which are distributed sequentially along the circumference of the second virtual circle, the center of which is located on the vertical axis.

[0024] Furthermore, the feeding mechanism includes:

[0025] First horizontal movement module;

[0026] The first vertical moving module is located at the output end of the first horizontal moving module;

[0027] A feeding bracket is located at the output end of the first vertical moving module; a feeding suction cup is provided on the feeding bracket for picking up the metal ring glass protective cover;

[0028] At least two first vertical moving modules are provided, and each first vertical moving module is provided with one of the feeding brackets.

[0029] Furthermore, the metal ring detection mechanism includes:

[0030] Second horizontal movement module;

[0031] The first detection bracket is located at the output end of the second horizontal moving module;

[0032] The first detection camera and the first light source are both mounted on the first detection bracket; four first light sources are provided, and the four first light sources are arranged around the lens of the first detection camera to form a ring light source.

[0033] Furthermore, the glass inspection mechanism includes:

[0034] Third horizontal movement module;

[0035] The second detection bracket is located at the output end of the third horizontal moving module;

[0036] The second detection camera and the second light source are both mounted on the second detection bracket; the second light source is a coaxial light source.

[0037] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0038] The turntable rotates, and the clamping mechanism holds the metal ring glass protective cover. The corresponding loading, appearance inspection and unloading processes are completed by the feeding mechanism, metal ring inspection mechanism, glass inspection mechanism and unloading mechanism. The appearance inspection is completed automatically, with high inspection efficiency, low missed inspection rate and guaranteed consistency of inspection standards and inspection accuracy. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the appearance inspection device for a metal ring glass protective cover according to an embodiment of the present invention;

[0040] Figure 2 This is an assembly diagram of the turntable and the rotation drive component in an embodiment of the present invention;

[0041] Figure 3 This is a schematic diagram of the clamping mechanism in an embodiment of the present invention;

[0042] Figure 4 This is a top view of the clamping mechanism in an embodiment of the present invention;

[0043] Figure 5 This is a partially exploded schematic diagram of the clamping mechanism in an embodiment of the present invention;

[0044] Figure 6 for Figure 5 A magnified view of a portion of point A in the middle;

[0045] Figure 7 This is a schematic diagram of the feeding mechanism in an embodiment of the present invention;

[0046] Figure 8 for Figure 7 A magnified view of a portion of point B in the middle;

[0047] Figure 9 This is a schematic diagram of the feeding mechanism in an embodiment of the present invention;

[0048] Figure 10 This is a schematic diagram of the metal ring detection mechanism in an embodiment of the present invention;

[0049] Figure 11 This is a schematic diagram of the glass inspection mechanism in an embodiment of the present invention.

[0050] Figure label:

[0051] 10. Clamping mechanism; 12. Clamping block; 121. Clamping groove; 1211. First groove wall; 1212. Second groove wall; 122. Clamping block body; 1221. Groove; 123. Support plate; 124. First clamping block; 125. Second clamping block; 13. Linear drive component; 14. First bracket; 15. Second bracket; 151. Clearance through hole; 16. Guide mechanism; 161. Slide rail; 162. Slider;

[0052] 20. Rack;

[0053] 30. Turntable; 31. Positioning through hole;

[0054] 40. Feeding mechanism; 41. Lifting drive component; 42. Lifting column; 43. Sensor; 421. Sensing through hole;

[0055] 50. Metal ring detection mechanism; 51. Second horizontal moving module; 52. First detection bracket; 53. First detection camera; 54. First light source;

[0056] 60. Glass inspection mechanism; 61. Third horizontal moving module; 62. Second inspection bracket; 63. Second inspection camera; 64. Second light source;

[0057] 70. Unloading mechanism; 71. First horizontal moving module; 72. First vertical moving module; 73. Unloading bracket; 74. Unloading suction cup;

[0058] 80. Rotary drive components. Detailed Implementation

[0059] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0060] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0061] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0062] In the description of this invention, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0063] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0064] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0065] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0066] This embodiment provides a visual inspection device for metal ring glass protective covers, mainly used for visual inspection of metal ring glass protective covers. Specifically, refer to... Figure 1 The appearance inspection equipment includes a turntable 30, a feeding mechanism 40, a metal ring inspection mechanism 50, a glass inspection mechanism 60, and a discharging mechanism 70. (Reference) Figure 2 The turntable 30 rotates around a vertical axis. At least one clamping mechanism 10 is provided on the turntable 30 for clamping the metal ring glass protective cover. A feeding mechanism 40 feeds the metal ring glass protective cover onto the clamping mechanism 10. A metal ring inspection mechanism 50 performs visual inspection on the metal ring. A glass inspection mechanism 60 performs visual inspection on the glass. A unloading mechanism 70 unloads the inspected metal ring glass protective cover from the clamping mechanism 10. Further, the visual inspection equipment also includes a rotary drive 80 for driving the turntable 30 to rotate. Optionally, the turntable 30 can be driven by a rotary motor.

[0067] In practice, the turntable 30 rotates, and the clamping mechanism 10 clamps the metal ring glass protective cover. The corresponding feeding, appearance inspection and unloading processes are completed by the feeding mechanism 10, the metal ring detection mechanism 50, the glass detection mechanism 60 and the unloading mechanism 70. The appearance inspection is completed automatically, with high inspection efficiency, low missed inspection rate, and the consistency of inspection standards and inspection accuracy can be guaranteed.

[0068] Furthermore, the appearance inspection equipment in this embodiment also includes a frame 20, on which a loading station, a first inspection station, a second inspection station, and a unloading station are distributed sequentially and evenly along the circumference of a first virtual circle. A loading mechanism 40 is located at the loading station, a metal ring inspection mechanism 50 is located at one of the first and second inspection stations, and a glass inspection mechanism 60 is located at the other of the first and second inspection stations. An unloading mechanism 70 is located at the unloading station. Even further, four clamping mechanisms 10 are provided on the turntable 30, evenly distributed along the circumference of the second virtual circle, with the centers of both the first and second virtual circles located on the vertical axis. When one clamping mechanism 10 is rotated by the turntable 30 to a certain station, the other three clamping mechanisms 10 are located at the other three stations, allowing the relevant mechanisms at the four stations to simultaneously perform relevant actions on the corresponding clamping mechanism 10 or the product on it. In this embodiment, a metal ring inspection mechanism 50 is set at the first inspection station, and a glass inspection mechanism 60 is set at the second inspection station. That is, the appearance inspection of the metal ring is performed first, and then the appearance inspection of the glass is performed. Of course, the glass inspection mechanism 60 can also be set at the first inspection station, and the metal ring inspection mechanism 50 can be set at the second inspection station. That is, the appearance inspection of the glass is performed first, and then the appearance inspection of the metal ring is performed.

[0069] By setting a loading station, a first inspection station, a second inspection station, and a unloading station on the frame 20, and correspondingly setting four clamping mechanisms 10 on the turntable 30, since each station on the frame 20 and the four clamping mechanisms 10 are evenly distributed on different circumferences with the same center, when one clamping mechanism 10 is located at a certain station, the other three clamping mechanisms 10 also reach the other three stations accordingly. The mechanisms at each station can perform related actions synchronously, which significantly improves the efficiency of appearance inspection.

[0070] Specifically, the metal ring glass cover includes a metal ring and glass on the upper surface of the metal ring; since it needs to be assembled with other camera accessories of the mobile phone, the outer peripheral wall of the metal ring usually has steps.

[0071] refer to Figure 3 and Figure 4The clamping mechanism 10 includes two clamping blocks 12 and two linear drive members 13. The two clamping blocks 12 are arranged opposite each other along a first direction (i.e., the X direction in the attached figure). The two linear drive members 13 are mounted on the turntable 30, and the output ends of each linear drive member 13 are connected to one clamping block 12 to drive the two clamping blocks 12 to move closer or further apart along the first direction. Further, a clamping groove 121 is formed on the side of one clamping block 12 facing the other. During actual clamping operation, the metal ring can simultaneously sit on both clamping blocks 12 via its own steps and be clamped between the groove walls of the clamping grooves 121 of the two clamping blocks 12 along the first direction.

[0072] The aforementioned clamping mechanism 10 uses two opposing clamping blocks 12, each with a clamping groove 121. Utilizing the steps on the outer periphery of the metal ring, the metal ring glass protective cover can be simultaneously placed on the two clamping blocks 12, which provide support. A portion of the metal ring is housed within the clamping groove 121, clamping it between the groove walls of the two clamping blocks 12, thus achieving stable clamping of the entire protective cover. The entire clamping process avoids contact with the glass on the upper surface of the metal ring, minimizing scratches and interference with appearance inspection. In practice, multiple clamping grooves 121 are linearly distributed on the clamping blocks 12, with a one-to-one correspondence between the two clamping blocks 12. This allows for the simultaneous clamping of multiple products, facilitating batch appearance inspection and further improving inspection efficiency. Optionally, the linear drive 13 can be a cylinder or a linear motor.

[0073] Furthermore, refer to Figure 5 The clamping groove 121 extends from top to bottom through the clamping block 12, and a positioning through hole 31 is formed on the turntable 30. (Reference) Figure 7The feeding mechanism 40 includes a lifting drive 41 and a lifting column 42. The lifting drive 41 is mounted on the frame 20, and the lifting column 42 is located at the output end of the lifting drive 41. Driven by the lifting drive 41, the lifting column 42 passes through the positioning through hole 31 of the turntable 30 from bottom to top and is positioned between two clamping blocks 12. The top surface of the lifting column 42 protrudes above the clamping blocks 12. At this time, the external metal ring glass protective cover to be inspected can be fed to the top of the lifting column 42. For the metal ring glass protective cover, the hollow structure of the metal ring allows it to be fitted onto the top of the lifting column 42, thus allowing the metal ring glass protective cover to sit on the lifting column 42 for feeding without interfering with the overlapping fit between the step on the outer peripheral wall of the metal ring and the clamping block 12 when the lifting column 42 descends. Optionally, the lifting drive 41 is a lifting motor. In practice, the lifting drive 41 drives the lifting column 42 to descend, while the two clamping blocks 12 of the clamping mechanism 10 move closer to each other until the metal ring glass protective cover can be placed on the clamping block 12. After the clamping mechanism 10 fully clamps the metal ring glass protective cover, the lifting drive 41 drives the lifting column 42 to descend until it disengages from the positioning through hole 31 so as not to interfere with the rotation of the turntable 30.

[0074] Furthermore, since the positions of the positioning through hole 31 and the lifting column 42 are fixed, the loading position of the metal ring glass protective cover is fixed when it is placed on the lifting column 42. The target positions of the two clamping blocks 12 are also consistent when the clamping mechanism 10 clamps the product. The clamping process of the clamping mechanism 10 is actually the process of repositioning the clamping blocks 12. The above loading method can effectively avoid the problem that the product cannot be effectively clamped due to the movement error of the clamping blocks 12.

[0075] In one embodiment, reference Figure 8 The lifting column 42 is provided with a receiving cavity, and a sensor 43 is built into the receiving cavity. The sensor 43 is used to sense whether the metal ring glass protective cover is in place. Specifically, the top surface of the lifting column 42 has a sensing through hole 421 communicating with the receiving cavity. The sensor 43 senses the metal ring glass protective cover through the sensing through hole 421. In this embodiment, since the metal ring glass protective cover is fitted onto the top of the lifting column 42 by a metal ring, the upper glass on the metal ring glass protective cover can be directly facing the top of the lifting column 42. Therefore, through the above-mentioned receiving cavity and sensing through hole 421, the sensing end of the sensor 43 can accurately sense whether there is glass above the lifting column 42 through the sensing through hole 421, and thus sense whether the metal ring glass protective cover is in place, facilitating the execution of the next operation.

[0076] In specific implementation, the first direction of the clamping mechanism 10 is set to be parallel to the radial direction of the second virtual circle where the corresponding clamping mechanism 10 is located. The position of each clamping mechanism 10 on the second virtual circle is determined, and it is set at a certain radial position of the second virtual circle. The first direction of the clamping mechanism 10 is set to be parallel to this radial direction. Then, this first direction changes with the rotation of the turntable 30, but for the clamping mechanism 10, the first direction is relatively constant.

[0077] Further, refer to Figure 2 and Figure 3 The two clamping blocks 12 are a first clamping block 124 and a second clamping block 125, respectively. The first clamping block 124 has a first side away from the center of the turntable 30 and a second side close to the center of the turntable 30 in a first direction. The second clamping block 125 is located on the outer edge of the turntable 30 and faces the first side of the first clamping block 124. Two linear drive members 13 are arranged side by side and are both located on the second side of the first clamping block 124. That is, the second clamping block 125 and the two linear drive members 13 are respectively located on both sides of the first clamping block 124 along the first direction. The second clamping block 125 is located on the outer edge of the turntable 30, and the two linear drive members 13 are located close to the center of the turntable 30. This arrangement makes full use of the space at the center of the turntable 30, which helps to minimize the size of the turntable 30 and improve the compactness of the entire device. Furthermore, the detection mechanism only needs to collect images of the products clamped by the two clamping blocks 12 near the outer edge of the turntable 30, avoiding the collection of too many images of other components of the clamping mechanism 10, which would cause unnecessary visual interference.

[0078] In this embodiment, the turntable 30 has a rectangular structure, and the four clamping mechanisms 10 are respectively located at the four sides of the rectangular structure. Furthermore, the redundant solids at the four corners of the rectangular structure can be removed to minimize the weight of the turntable 30 and reduce the load on the rotary drive component 80.

[0079] Furthermore, refer to Figure 3-5The two clamping blocks 12 and the turntable 30 are parallel to each other and spaced apart. The first clamping block 124 is connected to the output end of the corresponding linear drive 13 via a first bracket 14; the second clamping block 125 is connected to the output end of the corresponding linear drive 13 via a second bracket 15. Specifically, the first bracket 14 is connected to the top of the first clamping block 124. The second bracket 15 is located between the clamping block 12 and the turntable 30 and is connected to the bottom of the second clamping block 125. During appearance inspection, an inspection camera needs to capture images of the product clamped on the clamping mechanism 10 from top to bottom. Since the two linear drive 13s are located on the same side of the clamping blocks 12, if the second bracket 15 were to span the first clamping block 124 above and then connect to the second clamping block 125, it would interfere with image acquisition. Therefore, by setting a certain gap between the two clamping blocks 12 and the base, and placing the second bracket 15 within this gap and connecting it below the second clamping block 125, interference with image acquisition by the second bracket 15 can be avoided. Furthermore, since a positioning through hole 31 is provided on the turntable 30 to facilitate the insertion of the lifting column 42, in order to avoid interference between the second bracket 15 and the lifting column 42, a clearance through hole 151 is provided on the second bracket 15. The clearance through hole 151 and the positioning through hole 31 are connected in the vertical direction. The lifting column 42 is inserted between the two clamping blocks 12 after passing through the positioning through hole 31 and the clearance through hole 151 in sequence.

[0080] Furthermore, the clamping mechanism 10 also includes a guide mechanism 16. The guide mechanism 16 includes a slide rail 161 extending along a first direction and two sliders 162 slidably disposed on the slide rail 161. The slide rail 161 is disposed on the turntable 30, and the two sliders 162 are respectively connected to two clamping blocks 12. By setting the guide mechanism 16, the movement of the clamping blocks 12 along the first direction can be guided, ensuring the accuracy of the movement of the clamping blocks 12 along the first direction. Furthermore, two guide mechanisms 16 are provided, and are respectively located at both ends of the clamping blocks 12 along the length direction. When the length of the clamping blocks 12 is long, the linear drive member 13 is generally connected to the middle position of the length direction of the clamping blocks 12. Therefore, two guide mechanisms 16 are required to avoid inconsistent movement at both ends of the clamping blocks 12 along the length direction when they slide.

[0081] Specifically, refer to Figure 5 and Figure 6The clamping block 12 includes a clamping block body 122 and a support plate 123. A groove 1221 is formed on the upper surface of the clamping block body 122. The support plate 123 is detachably disposed in the groove 1221. The clamping groove 121 is formed on both the clamping block body 122 and the support plate 123. A metal ring is placed on the support plate 123 via a step. Since the metal ring has a certain hardness, prolonged clamping will cause wear to the clamping block 12, affecting the accurate clamping of the clamping block 12. Replacing the entire clamping block 12 is cumbersome. Therefore, the clamping block 12 is set as a detachable structure composed of the clamping block body 122 and the support plate 123, and the metal ring is placed on the support plate 123. The metal ring mainly wears the support plate 123. When the support plate 123 is worn to the point that it affects normal clamping, the support plate 123 can be directly disassembled and replaced without replacing the entire clamping block 12.

[0082] Furthermore, the clamping groove 121 has a first groove wall 1211 formed on the clamping block body 122, and a second groove wall 1212 formed on the support plate 123. The second groove wall 1212 of each clamping block 12 is closer to the other clamping block 12 in a first direction relative to the first groove wall 1211, so that the metal ring is clamped between the second groove walls 1212 of the two support plates 123 in the first direction. The above arrangement can avoid the first groove wall 1211 on the clamping block body 122 from contacting the metal ring, and instead, it is only clamped by the second groove wall 1212 of the support plate 123, further avoiding possible wear of the clamping block body 122.

[0083] Specifically, multiple support plates 123 are provided on the clamping block 12 along the second direction. Optionally, each support plate 123 is provided with at least one clamping groove 121. That is, the multiple clamping grooves 121 linearly distributed on the clamping block 12 are grouped, and each group of clamping grooves 121 corresponds to a support plate 123. Once a support plate 123 is worn excessively, it can be removed and replaced individually, while support plates 123 that are not worn to the point of needing replacement can continue to be used. Optionally, the support plate 123 is a plastic part, which is wear-resistant, lightweight, low-cost, and easy to replace.

[0084] refer to Figure 9The unloading mechanism 70 includes a first horizontal moving module 71, a first vertical moving module 72, and an unloading bracket 73. The first horizontal moving module 71 is mounted on the frame 20. The first vertical moving module 72 is located at the output end of the first horizontal moving module 71. The unloading bracket 73 is located at the output end of the first vertical moving module 72. An unloading suction cup 74 is mounted on the unloading bracket 73 to pick up the metal ring glass protective cover, thus completing the unloading process. Further, at least two first vertical moving modules 72 are provided, and each first vertical moving module 72 is correspondingly equipped with one unloading bracket 73. Even further, multiple unloading suction cups 74 can be linearly arranged on each unloading bracket 73 to simultaneously pick up multiple products. In practice, the first horizontal moving module 71 moves horizontally to the target position with the first vertical moving module 72. The first vertical module drives the unloading bracket 73 to descend until the unloading suction cup 74 picks up the product. Then, the clamping mechanism 10 releases the clamp, and the unloading bracket 73, along with the unloading suction cup 74 and the product, rises. The first horizontal moving module 71 then moves the first vertical moving module 72 and the unloading bracket 73 above it horizontally away from the turntable 30, and the product is unloaded.

[0085] refer to Figure 10 The metal ring detection mechanism 50 includes a second horizontal moving module 51, a first detection bracket 52, a first detection camera 53, and a first light source 54. The second horizontal moving module 51 is mounted on the frame 20. The first detection bracket 52 is located at the output end of the second horizontal moving module 51. The first detection camera 53 and the first light source 54 are both mounted on the first detection bracket 52. Four first light sources 54 are arranged around the lens of the first detection camera 53 to form a ring light source. Since the height of the clamping mechanism 10 on the turntable 30 is fixed, the height of the product on the clamping mechanism 10 is also fixed. However, the focal length of the first detection camera 53 can be finely adjusted. Therefore, the metal ring detection mechanism 50 only needs to have the freedom of horizontal movement. Since the clamping mechanism 10 can linearly clamp multiple products, after moving to the first inspection station, the linear distribution direction of the multiple products is consistent with the horizontal movement direction of the first inspection bracket 52. Therefore, driven by the second horizontal movement module 51, the first inspection camera 53 can move horizontally to complete the image acquisition of multiple products one by one, realizing the appearance inspection of the metal rings of multiple products. At the same time, the metal ring inspection mechanism 50 forms a ring light source through the arrangement of multiple first light sources 54. The ring light source can provide illumination of the product at different angles, highlighting the three-dimensional information of the object and effectively solving the problem of illumination shadows, which is especially suitable for illuminating metal rings with three-dimensional structures.

[0086] refer to Figure 11The glass inspection mechanism 60 includes a third horizontal moving module 61, a second inspection bracket 62, a second inspection camera 63, and a second light source 64. The third horizontal moving module 61 is mounted on the frame 20. The second inspection bracket 62 is located at the output end of the third horizontal moving module 61. Both the second inspection camera 63 and the second light source 64 are mounted on the second inspection bracket 62. The second light source 64 is a coaxial light source. Similar to the second horizontal moving module 51, after moving to the second inspection station, the linear distribution direction of multiple products is consistent with the horizontal moving direction of the second inspection bracket 62. Therefore, driven by the third horizontal moving module 61, the second inspection camera 63 can move horizontally to complete the image acquisition of multiple products one by one, realizing the appearance inspection of the glass of multiple products. The coaxial light source greatly improves the brightness through the high-density arrangement of light-emitting diodes and reduces light loss through an advanced coated beam splitter, resulting in uniform brightness, which is especially suitable for scratch detection of high-reflectivity objects such as glass.

[0087] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. An appearance inspection apparatus of a metal ring glass protective cover, characterized by, The utility model relates to a metal ring glass protective cover appearance detection device which comprises the following parts: A rotating disc (30) rotates around a vertical axis; at least one clamping mechanism (10) for clamping a metal ring glass protective cover is arranged on the rotating disc (30); A feeding mechanism (40) is used to feed the metal ring glass protective cover to the clamping mechanism (10); A metal ring detection mechanism (50) is used to detect the appearance of the metal ring; A glass detection mechanism (60) is used to detect the appearance of the glass; A discharging mechanism (70) is used to discharge the metal ring glass protective cover after detection from the clamping mechanism (10); The clamping mechanism (10) comprises: Two clamping blocks (12) are oppositely arranged along a first direction; Two linear driving elements (13) are arranged on the rotating disc (30), and the output ends of the two linear driving elements (13) are respectively connected to one clamping block (12) to drive the two clamping blocks (12) to move towards or away from each other along the first direction; A clamping groove (121) is arranged on the side of one clamping block (12) facing the other clamping block (12); The two clamping blocks (12) are respectively a first clamping block (124) and a second clamping block (125), the first clamping block (124) has a first side away from the center of the rotating disc (30) and a second side close to the center of the rotating disc (30) along the first direction, and the second clamping block (125) is arranged on the outer edge of the rotating disc (30) and faces the first side of the first clamping block (124); the two linear driving elements (13) are arranged side by side and are both located on the second side of the first clamping block (124); The two clamping blocks (12) are arranged in parallel with and spaced from the rotating disc (30); the second clamping block (125) is connected to the output end of the corresponding linear driving element (13) through a second support (15); the second support (15) is arranged between the clamping block (12) and the rotating disc (30) and is connected to the bottom of the second clamping block (125); The clamping groove (121) is arranged from top to bottom through the clamping block (12), and a positioning through hole (31) is arranged on the rotating disc (30); The feeding mechanism (40) comprises: A lifting driving element (41); A lifting column (42) is arranged on the output end of the lifting driving element (41); the lifting column (42) can pass through the positioning through hole (31) from bottom to top and be located between the two clamping blocks (12), and the top surface of the lifting column (42) is arranged above the clamping blocks (12); the metal ring glass protective cover is fed to the top of the lifting column (42).

2. The appearance inspection apparatus according to claim 1, characterized by The lifting column (42) is provided with a containing cavity, and a sensor (43) is arranged in the containing cavity; a sensing through hole (421) is arranged in the top surface of the lifting column (42) and communicates with the containing cavity, and the sensor (43) senses the metal ring glass protective cover through the sensing through hole (421).

3. The appearance inspection apparatus according to claim 1, characterized by Four clamping mechanisms (10) are provided on the turntable (30). The four clamping mechanisms (10) are evenly distributed along the circumference of the second virtual circle, and the center of the second virtual circle is located on the vertical axis.

4. The appearance inspection apparatus according to claim 1, characterized by The feeding mechanism (70) includes: First horizontal movement module (71); The first vertical moving module (72) is located at the output end of the first horizontal moving module (71); A feeding bracket (73) is provided at the output end of the first vertical moving module (72); a feeding suction cup (74) is provided on the feeding bracket (73) for picking up the metal ring glass protective cover; At least two first vertical moving modules (72) are provided, and each first vertical moving module (72) is provided with a corresponding feeding bracket (73).

5. The appearance inspection apparatus according to claim 1, characterized by The metal ring detection mechanism (50) includes: Second horizontal movement module (51); The first detection bracket (52) is located at the output end of the second horizontal moving module (51); The first detection camera (53) and the first light source (54) are both mounted on the first detection bracket (52); four first light sources (54) are provided, and the four first light sources (54) are arranged around the lens of the first detection camera (53) to form a ring light source.

6. The appearance inspection apparatus according to claim 1, characterized by The glass testing mechanism (60) includes: Third horizontal movement module (61); The second detection bracket (62) is located at the output end of the third horizontal moving module (61); The second detection camera (63) and the second light source (64) are both mounted on the second detection bracket (62); the second light source (64) is a coaxial light source.

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