Mirror surface appearance detection device

Abstract

The invention relates to the technical field of mobile phone mirror surface appearance detection, in particular to a mirror surface appearance detection device which comprises a detection table, a clamping tool used for clamping and limiting a to-be-detected mirror surface is arranged on the detection table, and a posture adjusting assembly used for changing the posture of the clamping tool is arranged in the detection table. According to the invention, the posture adjusting assembly can drive the clamping tool to move on the moving track on the detection table, so that the to-be-detected mirror surface arranged on the clamping tool can be changed from horizontal placement to vertical placement, and meanwhile, the to-be-detected mirror surface can transversely move on the detection table; the whole clamping tool can also rotate to change the placement direction of the mirror surface to be detected, and through the arrangement, the clamping tool has six degrees of freedom, the display angle of the mirror surface to be detected is greatly increased, so that the shooting data of the machine vision detection module is increased, the machine vision detection module can be still different when data acquisition is carried out, and the data acquisition efficiency is improved. And the accuracy of the shooting data is effectively ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of mobile phone mirror appearance detection technology, and in particular to a mirror surface appearance detection device. Background Art

[0002] Mobile phone mirror appearance inspection uses machine vision technology + big data comparison. Through multi-angle light sources and high-precision optical systems, it automatically identifies minor defects such as scratches, dirt, and crystal points to eliminate defective products. This is a key link in ensuring quality in mobile phone manufacturing.

[0003] Traditional mobile phone mirror surface appearance inspection generally places the mirror to be inspected on a special fixture, and then uses a machine vision inspection module to photograph and scan the mirror on the fixture. Although this inspection method can determine the quality of mobile phone mirror appearance inspection, in order to obtain more shooting data, the entire machine vision inspection module needs to be frequently moved, which results in the machine vision inspection module taking a long time to collect data. At the same time, the movement of the machine vision inspection module also increases the instability of shooting. For this reason, a mirror surface appearance inspection device is proposed. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the present invention provides a mirror surface appearance detection device, which solves the technical problem that traditional mirror surface appearance detection takes a long time.

[0005] To solve the above technical problems, the present invention provides the following technical solutions: a mirror surface appearance inspection device, comprising a testing platform, the testing platform is provided with a clamping tool for clamping and limiting the mirror surface to be inspected, and the testing platform is provided with a posture adjustment component for changing the posture of the clamping tool; The clamping tooling includes a clamping assembly for carrying the mirror surface to be inspected and a driving assembly for driving the clamping assembly to work; a movable track is provided on the inspection table, and the posture adjustment assembly is used to drive the clamping assembly to move on the movable track; an adjustment rack is provided on the movable track for changing the placement angle of the clamping assembly.

[0006] Preferably, the clamping assembly includes a support rod, a negative pressure tube is slidably provided on the support rod, and a suction cup is provided on the negative pressure tube; the support rod is also provided with a fixing ring, and two long limit rods and two short limit rods are rotatably provided on the fixing ring, and the ends of the long limit rods and the short limit rods are fixed with clamping blocks by locking screws; A sliding ring is slidably provided on the negative pressure tube, and four connecting rods are rotatably provided on the sliding ring, two of which are hinged to two long limit rods, and the other two connecting rods are also hinged to two short limit rods.

[0007] Preferably, the driving assembly includes a driving ring slidably arranged on the support rod, the driving ring and the sliding ring are fixedly connected via two driving rods, and the negative pressure tube is further provided with an extrusion spring, and the extrusion spring is arranged between the fixed ring and the sliding ring; The support rod is provided with a driven gear used in conjunction with the adjustment rack.

[0008] Preferably, the posture adjustment assembly includes two arc-shaped guide rails arranged in the detection platform, a sliding member is slidably provided on the arc-shaped guide rails, and the sliding member is provided with a driving part for driving the sliding member to slide on the arc-shaped guide rails; The driving part includes a servo motor arranged on the sliding member, the output end of the servo motor is provided with a driving gear in the sliding member, the arc-shaped guide rail is provided with a plurality of tooth blocks, and the driving gear and the plurality of tooth blocks are meshed with each other.

[0009] Preferably, a moving portion for driving the clamping tool to move laterally is provided between the two sliding members; the moving portion comprises an L-shaped mounting plate provided on one of the sliding members, wherein a guide rod and a screw rod are provided between the other sliding member and the L-shaped mounting plate, the screw rod being rotatably provided, a drive motor being provided on the L-shaped mounting plate, and an output end of the drive motor being fixedly provided to one end of the screw rod; The screw rod is provided with a movable base through a threaded connection, and the movable base is provided with a guide hole for cooperating with the guide rod; the support rod is rotatably arranged on the movable base through a rotating member.

[0010] Preferably, the rotating member includes a connecting ring fixedly arranged on the movable base, a limiting cavity is provided in the connecting ring, an extrusion protrusion is slidingly provided in the limiting cavity, a reset spring is also provided in the limiting cavity, and a plurality of limiting holes are provided on the support rod for use with the extrusion protrusion.

[0011] Preferably, the support rod and the negative pressure tube are fixed by a locking screw.

[0012] Preferably, the fixing ring is provided with a circular through hole for sliding with the driving rod. By means of the above technical solution, the present invention provides a mirror surface appearance inspection device, which has at least the following beneficial effects: The present invention can drive the clamping tool to move on the moving track on the inspection table through the posture adjustment component, so that the mirror surface to be inspected set on the clamping tool can be changed from horizontal placement to vertical placement. At the same time, the mirror surface to be inspected can also be moved laterally on the inspection table, and the entire clamping tool can also be rotated to change the placement direction of the mirror surface to be inspected. Through the above arrangement, the clamping tool has 6 degrees of freedom, which greatly increases the display angle of the mirror surface to be inspected, thereby increasing the shooting data of the machine vision inspection module, and the machine vision inspection module can be stationary during data collection, effectively ensuring the accuracy of the shooting data. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 Schematic diagram of different postures of the clamping tool of the present invention; Figure 2 Schematic diagram of the internal structure of the detection platform of the present invention; Figure 3 This is a structural diagram of the posture adjustment component of the present invention; Figure 4 This is a schematic diagram of the sliding member structure of the present invention; Figure 5 This is a schematic diagram of the L-shaped mounting plate structure of the present invention; Figure 6 This is a schematic diagram of the driving gear structure of the present invention; Figure 7 This is a structural schematic diagram of the mobile base of the present invention; Figure 8 This is a schematic diagram of the connecting ring structure of the present invention; Figure 9 This is a schematic diagram of the clamping tool structure of the present invention; Figure 10 This is a schematic diagram of the suction cup structure of the present invention; Figure 11 It is a schematic diagram of the structure of the drive ring and the sliding ring of the present invention.

[0014] In the figure: 1, testing table; 101, adjusting rack; 2. Clamping fixture; 201. Support rod; 202. Fixing ring; 203. Long limit rod; 204. Short limit rod; 205. Sliding ring; 206. Connecting rod; 207. Clamping block; 208. Negative pressure tube; 209. Suction cup; 210. Drive ring; 211. Drive rod; 212. Extrusion spring; 213. Driven gear; 3. Posture adjustment assembly; 301. Arc guide rail; 302. Sliding member; 303. Servo motor; 304. Driving gear; 305. L-shaped mounting plate; 306. Guide rod; 307. Screw rod; 308. Drive motor; 309. Moving base; 310. Connecting ring; 311. Extrusion bump. DETAILED DESCRIPTION

[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example

[0016] Please refer to Figures 1-11 A mirror surface appearance inspection device includes a test platform 1, a clamping tool 2 for clamping and limiting the mirror surface to be inspected is provided on the test platform 1, and a posture adjustment component 3 for changing the posture of the clamping tool 2 is provided inside the test platform 1; The clamping tooling 2 includes a clamping assembly for carrying the mirror to be inspected and a driving assembly for driving the clamping assembly to work; a moving track is provided on the inspection table 1, and the posture adjustment assembly 3 is used to drive the clamping assembly to move on the moving track; an adjustment rack 101 is provided on the moving track to change the placement angle of the clamping assembly.

[0017] The surface appearance inspection of traditional mobile phone mirrors is generally to place the mirror to be inspected on a special fixture, and then use the machine vision inspection module to shoot and scan the mirror on the fixture, and then upload the shooting data and scan data to the computer, and use artificial intelligence to compare the shooting data with the standard template data to judge the surface appearance quality of the mirror to be inspected; although this inspection method can determine the quality of appearance inspection, in order to obtain more shooting data, it is necessary to frequently move the entire machine vision inspection module. By changing the shooting angle of the machine vision inspection module, it is possible to obtain shooting data of the mirror to be inspected at different angles. However, due to the traditional special The fixture can only clamp and fix the mirror surface to be inspected, and cannot be moved or tilted. As a result, the machine vision inspection module can only increase the overall adjustment range of the machine vision inspection module to obtain more shooting data, which leads to a longer time for data collection. At the same time, the adjustment range also increases the instability of the shooting of the machine vision inspection module, which may cause distortion of the shooting data in severe cases. To this end, the present invention adds a posture adjustment component 3 in the inspection table 1, and uses the posture adjustment component 3 to change the posture of the clamping tool 2, so as to obtain more shooting angles and more shooting data without moving the machine vision inspection module. The posture adjustment component 3 can drive the clamping fixture 2 to move on the moving track on the inspection table 1, so that the mirror surface to be inspected set on the clamping fixture 2 can be changed from horizontal placement to vertical placement. At the same time, the mirror surface to be inspected can also be moved laterally on the inspection table 1, and the entire clamping fixture 2 can also rotate to change the placement direction of the mirror surface to be inspected. Through the above setting, the clamping fixture 2 has 6 degrees of freedom, which greatly increases the display angle of the mirror surface to be inspected, thereby increasing the shooting data of the machine vision inspection module, and the machine vision inspection module can be stationary at different times when collecting data, effectively ensuring the accuracy of the shooting data. Example

[0018] Please refer to Figures 9-11 This embodiment is basically the same as the first embodiment. This embodiment is made on the basis of the first embodiment and has the same beneficial effects as the first embodiment. The same parts can be referred to each other and will not be described in detail here.

[0019] As a further technical solution of this embodiment, the clamping assembly includes a support rod 201, on which a negative pressure tube 208 is slidably provided, and a suction cup 209 is provided on the negative pressure tube 208; the support rod 201 is also provided with a fixing ring 202, on which two long limit rods 203 and two short limit rods 204 are rotatably provided, and the ends of the long limit rods 203 and the short limit rods 204 are fixed with clamping blocks 207 by locking screws; A sliding ring 205 is slidably provided on the negative pressure tube 208 , and four connecting rods 206 are rotatably provided on the sliding ring 205 , two of which are hinged to the two long limit rods 203 , and the other two connecting rods 206 are also hinged to the two short limit rods 204 .

[0020] Furthermore, the drive assembly includes a drive ring 210 slidably mounted on the support rod 201. The drive ring 210 is fixedly connected to the sliding ring 205 via two drive rods 211. The negative pressure tube 208 is also provided with an extrusion spring 212, which is disposed between the fixed ring 202 and the sliding ring 205. The support rod 201 is provided with a driven gear 213 used in conjunction with the adjustment rack 101 .

[0021] As can be seen from the above, the specific method for placing the mirror surface to be inspected is as follows: the operator pulls the drive ring 210. Since the drive ring 210 and the sliding ring 205 are fixedly connected by two drive rods 211, pulling the drive ring 210 can drive the sliding ring 205 to move toward the side of the fixed ring 202. At this time, the extrusion spring 212 is compressed and deformed; When the sliding ring 205 moves toward one side of the fixed ring 202, the connecting rod 206 rotatably arranged on the sliding ring 205 moves, thereby driving the two long limit rods 203 and the two short limit rods 204 to be opened. At this time, the operator can place the mirror to be inspected on the suction cup 209, and then release the driving ring 210. Under the action of the extrusion spring 212, the driving ring 210 moves, thereby causing the two long limit rods 203 and the two short limit rods 204 to be retracted, thereby placing the mirror to be inspected. The surface is clamped. Since the ends of the long limit rod 203 and the short limit rod 204 are fixed with clamping blocks 207 by locking screws, there are actually four clamping blocks 207 to clamp the mirror surface to be inspected. In actual use, the material of the clamping blocks 207 is rubber, and the setting of the clamping blocks 207 and the long limit rod 203 and the short limit rod 204 is achieved by locking screws. Therefore, the angle of the clamping blocks 207 can be further adjusted according to the size of the mirror surface to be inspected to adapt to the actual use of detection; Since a negative pressure tube 208 is slidingly provided on the support rod 201, and a suction cup 209 is provided on the negative pressure tube 208, the distance between the mirror surface to be inspected and the support rod 201 can be determined by adjusting the extended length of the negative pressure tube 208. In actual use, a mounting hole is opened on one side of the support rod 201, and a locking screw is provided in the mounting hole. The extended length of the negative pressure tube 208 can be adjusted by tightening the locking screw. Example

[0022] Please refer to Figure 2-Figure 8 This embodiment is basically the same as the first embodiment. This embodiment is made on the basis of the first embodiment and has the same beneficial effects as the first embodiment. The same parts can be referred to each other and will not be described in detail here.

[0023] As a further technical solution of this embodiment, the posture adjustment assembly 3 includes two arc-shaped guide rails 301 arranged in the detection platform 1, and a sliding member 302 is slidably provided on the arc-shaped guide rails 301, and the sliding member 302 is provided with a driving part for driving the sliding member 302 to slide on the arc-shaped guide rails 301; The driving unit includes a servo motor 303 disposed on the sliding member 302. The output end of the servo motor 303 is provided with a driving gear 304 in the sliding member 302. The arc guide rail 301 is provided with a plurality of gear blocks. The driving gear 304 meshes with the plurality of gear blocks.

[0024] Furthermore, a moving portion for driving the clamping tool 2 to move laterally is provided between the two sliding members 302; the moving portion includes an L-shaped mounting plate 305 provided on one of the sliding members 302, wherein a guide rod 306 and a screw rod 307 are provided between the other sliding member 302 and the L-shaped mounting plate 305, the screw rod 307 being rotatably provided, and a drive motor 308 being provided on the L-shaped mounting plate 305, the output end of the drive motor 308 being fixedly provided to one end of the screw rod 307; The screw rod 307 is provided with a movable base 309 through a threaded connection. The movable base 309 is provided with a guide hole for cooperating with the guide rod 306. The support rod 201 is rotatably provided on the movable base 309 through a rotating member.

[0025] Furthermore, the rotating part includes a connecting ring 310 fixedly set on the movable base 309, a limiting cavity is opened in the connecting ring 310, an extrusion protrusion 311 is slidingly provided in the limiting cavity, a reset spring is also provided in the limiting cavity, and a plurality of limiting holes are opened on the support rod 201 for use with the extrusion protrusion 311.

[0026] As can be seen from the above, when the mirror surface to be inspected is clamped and limited by the clamping fixture 2, the posture of the clamping fixture 2 can be adjusted by the posture adjustment component 3, and the clamping fixture 2 can be moved laterally on the inspection table 1 through the moving part. The specific principle is: after the drive motor 308 is started, it can drive the screw rod 307 to rotate, and the rotation of the screw rod 307 can drive the movable base 309 to move laterally along the guide rod 306. Since the clamping fixture 2 is entirely arranged on the movable base 309, the drive motor 308 can be started to make the clamping fixture 2 move laterally; The driving part changes the posture of the mirror to be inspected from a horizontal position to a vertical position. The specific principle is as follows: the servo motor 303 arranged on the slide 302 is started, which drives the driving gear 304 arranged at the output end of the servo motor 303 to rotate, and a plurality of tooth blocks are provided on the arc guide rail 301, and the driving gear 304 engages with the plurality of tooth blocks. After the servo motor 303 is started, it can drive the entire slide 302 to move along the arc guide rail 301. The simultaneous movement of the two slides 302 can drive the position of the entire moving part to change, further making the clamping tool 2 change from vertical to horizontal, that is, the posture of the mirror to be inspected changes. When the driving part is working, the moving part also needs to cooperate with the driving part to work together. Since the moving track on the inspection table 1 is not a regular linear track, when the clamping tool 2 is tilted, the moving base 309 needs to move horizontally, and then move in conjunction with the opened moving track; this arrangement can enable the tilted mirror to be inspected to obtain more shooting angles, thereby ensuring the reliability of comparison; During the lateral movement of the clamping fixture 2, the driven gear 213 on the support rod 201 may be meshed with the adjustment rack 101. Through practical calculation, it can be made that after the driven gear 213 is meshed with the adjustment rack 101, the support rod 201 rotates one circle, that is, the head and tail positions of the mirror surface to be inspected are swapped. As a result, different new data can be obtained when shooting and collecting on the left and right sides of the inspection platform 1, thereby expanding the diversity of data during inspection. Since the support rod 201 and the movable base 309 are arranged to rotate, when the driven gear 213 and the adjustment rack 101 are not engaged, in order to ensure the stability of the support rod 201, that is, to prevent it from rotating arbitrarily and causing increased difficulty in shooting and collecting, a rotating part is added for this purpose; through the rotation setting of the support rod 201 and the connecting ring 310, and the addition of an extrusion protrusion 311 in the connecting ring 310, the support rod 201 can ensure relative stillness with the connecting ring 310 in the absence of large external force, that is, the support rod 201 and the movable base 309 can be kept relatively still.

[0027] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by a person skilled in the art. The provision of power is also common knowledge in the art. The present invention is mainly used to protect mechanical devices, so the control method and circuit connection are not explained in detail in the present invention.

[0028] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to in detail. For the above embodiments, since they are basically similar to the method embodiments, the description is relatively simple. For relevant parts, please refer to the partial description of the method embodiments.

[0030] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A mirror surface appearance detection device, characterized in that: The invention comprises a testing platform (1), wherein the testing platform (1) is provided with a clamping tool (2) for clamping and limiting the mirror surface to be tested, and the testing platform (1) is provided with a posture adjustment component (3) for changing the posture of the clamping tool (2); The clamping fixture (2) comprises a clamping assembly for carrying the mirror surface to be inspected and a driving assembly for driving the clamping assembly to work; a moving track is provided on the inspection table (1); the posture adjustment assembly (3) is used to drive the clamping assembly to move on the moving track; and an adjustment rack (101) for changing the placement angle of the clamping assembly is provided on the moving track.

2. The mirror surface appearance detection device according to claim 1, characterized in that: The clamping assembly comprises a support rod (201), a negative pressure tube (208) is slidably provided on the support rod (201), and a suction cup (209) is provided on the negative pressure tube (208); a fixing ring (202) is also provided on the support rod (201), and two long limit rods (203) and two short limit rods (204) are rotatably provided on the fixing ring (202), and the ends of the long limit rods (203) and the short limit rods (204) are fixed with clamping blocks (207) by locking screws; A sliding ring (205) is slidably provided on the negative pressure tube (208), and four connecting rods (206) are rotatably provided on the sliding ring (205), two of which are hingedly connected to the two long limit rods (203), and the other two connecting rods (206) are also hingedly connected to the two short limit rods (204).

3. The mirror surface appearance detection device according to claim 2, characterized in that: The driving assembly includes a driving ring (210) slidably arranged on the support rod (201), the driving ring (210) and the sliding ring (205) are fixedly connected via two driving rods (211), and the negative pressure tube (208) is also provided with an extrusion spring (212), and the extrusion spring (212) is arranged between the fixed ring (202) and the sliding ring (205); The support rod (201) is provided with a driven gear (213) used in conjunction with the adjustment rack (101).

4. The mirror surface appearance detection device according to claim 1, characterized in that: The posture adjustment assembly (3) comprises two arc-shaped guide rails (301) arranged in the detection platform (1), a sliding member (302) is slidably provided on the arc-shaped guide rails (301), and a driving part is provided on the sliding member (302) for driving the sliding member (302) to slide on the arc-shaped guide rails (301); The driving part comprises a servo motor (303) arranged on a sliding member (302); an output end of the servo motor (303) is provided with a driving gear (304) in the sliding member (302); a plurality of tooth blocks are provided on the arc-shaped guide rail (301); and the driving gear (304) and the plurality of tooth blocks are meshed with each other.

5. The mirror surface appearance detection device according to claim 3, characterized in that: A moving portion for driving the clamping tool (2) to move laterally is provided between the two sliding members (302); the moving portion comprises an L-shaped mounting plate (305) provided on one of the sliding members (302), wherein a guide rod (306) and a screw rod (307) are provided between the other sliding member (302) and the L-shaped mounting plate (305), the screw rod (307) being rotatably provided, a driving motor (308) being provided on the L-shaped mounting plate (305), and an output end of the driving motor (308) being fixedly provided to one end of the screw rod (307); The screw rod (307) is provided with a movable base (309) via a threaded connection, and the movable base (309) is provided with a guide hole for cooperating with the guide rod (306); the support rod (201) is rotatably arranged on the movable base (309) via a rotating member.

6. The mirror surface appearance detection device according to claim 5, characterized in that: The rotating member includes a connecting ring (310) fixedly arranged on the movable base (309), a limiting cavity is provided in the connecting ring (310), an extrusion protrusion (311) is slidably provided in the limiting cavity, a return spring is also provided in the limiting cavity, and a plurality of limiting holes used in conjunction with the extrusion protrusion (311) are provided on the support rod (201).

7. The mirror surface appearance detection device according to claim 3, characterized in that: The support rod (201) and the negative pressure tube (208) are fixed together by means of a locking screw.

8. The mirror surface appearance detection device according to claim 3, characterized in that: The fixing ring (202) is provided with a circular through hole for the sliding of the driving rod (211).

Images