A mobile phone shell appearance uniformity detection device

Abstract

The present invention relates to the technical field of mobile phone processing and detection, and specifically to a mobile phone shell appearance uniformity detection device. The mobile phone shell appearance uniformity detection device comprises: a working platform; a mobile phone shell detection table, which is slidably mounted on the working platform. A detection table drive structure is mounted on the working platform and connected to the mobile phone shell detection table. A positioning component is mounted on the correction station of the working platform. A height sensing unit is mounted on the detection station of the working platform, which is used to detect the mobile phone shell at the detection station and obtain a processed data set of the upper surface of the mobile phone shell. A flip assembly structure is mounted on the flip station on the working platform, which is used to flip the mobile phone shell after detection. A control unit is electrically connected to the positioning assembly, the height sensing unit, the detection table drive structure, and the flip assembly structure. The present invention realizes intelligent detection, and the detection result can materialize and digitize the detected appearance.

Description

Technical Field

[0001] The present invention relates to the technical field of mobile phone detection, and in particular to a device for detecting appearance uniformity of a mobile phone shell. Background Art

[0002] The mobile phone case is a protective cover for the mobile phone, which is used to protect the mobile phone from damage. With the development of technology, the design and materials of mobile phone cases are also constantly improving to meet the growing needs of consumers. Common mobile phone case materials are: Plastic: It is one of the most common shell materials. It is cheap and resistant to falling, but it has a hard texture and poor feel. Metal: Such as aluminum alloy, stainless steel, etc., with good texture and comfortable feel, but relatively expensive. Glass: It has good scratch resistance and fall resistance, but it is easy to be stained with fingerprints, so special attention should be paid to cleaning. In addition, there are some innovative materials, such as liquid metal, carbon fiber, etc., each with its own advantages and disadvantages.

[0003] Mobile phone case appearance uniformity inspection refers to the inspection and evaluation of the overall appearance quality of the mobile phone case to ensure the beauty and uniformity of its appearance design. This process usually includes the following key steps: Appearance inspection: First, the staff will conduct a comprehensive appearance inspection of the mobile phone case, including overall color, material, pattern, texture and other aspects. The purpose of this step is to confirm whether the mobile phone case meets the design requirements and whether there are obvious design defects or flaws. Color comparison: After confirming the main appearance features of the mobile phone case, the staff will conduct color comparison. This includes checking the color differences of the mobile phone case at various angles under different lighting conditions to ensure that the color of the mobile phone case is uniform and consistent. Check the details: The staff will also check the various details of the mobile phone case, such as edges, corners, interfaces, etc., to ensure that the craftsmanship quality and design of these parts are perfectly combined. Professional equipment inspection: Sometimes, the above steps may use professional inspection equipment, such as colorimeter, spectrometer, etc., to help staff more accurately inspect and evaluate the appearance of the mobile phone case. Result feedback: Finally, the staff will feedback the appearance uniformity inspection results of the mobile phone case to the designers and manufacturers so that they can make improvements and optimizations based on the feedback. In general, mobile phone case appearance uniformity inspection is a key step to ensure product quality and beauty. Through this process, we can identify problems in a timely manner and provide corresponding solutions, thereby improving the market competitiveness of our products.

[0004] During the production process of mobile phone shells, manual visual inspection is performed on the mobile phone shells, but the inspection efficiency is low and the subjectivity is high. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a mobile phone shell appearance uniformity detection device, which is used to detect the uniformity of the appearance of the produced mobile phone shell, especially to detect and evaluate the thickness of the center of the mobile phone shell and the curvature around it. The mobile phone shell appearance uniformity detection device comprises:

[0006] The work platform has loading and unloading stations, correction stations, inspection stations and flip stations at the corresponding positions of the work platform. It can be a rectangular flat plate structure, a welded frame structure, or a production line conveying platform with smooth transmission. The specific design needs to be based on actual needs. When the work platform is a rectangular flat plate structure, the work platform can be installed at the sampling station, and the mobile phone shells on the production line can be sampled manually or by a manipulator, and then the sampled samples can be tested. When the work platform is a production line conveying platform with smooth transmission, the work platform can be docked with the production line of the mobile phone shell and installed on the production line to conduct a full inspection of the mobile phone shell. The four corners of the bottom of the work platform can be fixedly installed with a support frame, and the bottom of the support frame can be fixedly connected with a pad. If there are mounting holes on the pad, bolts can be used to pass through the mounting holes to fix the work platform to the ground at the installation position.

[0007] The mobile phone case inspection table is slidably installed on the working platform and is used to place mobile phone cases. The mobile phone case inspection table slides cyclically between the loading and unloading stations, the correction station, the inspection station and the flipping station.

[0008] The testing platform driving structure is installed on the working platform and connected to the mobile phone case testing platform, and is used to drive the mobile phone case testing platform to move, thereby driving the mobile phone case testing platform to switch positions between the loading and unloading stations, the correction station, the testing station and the flipping station.

[0009] The positioning component is installed on the correction station of the working platform and is used to correct the position of the mobile phone case placed on the mobile phone case testing table.

[0010] The height sensing unit is installed on the inspection station of the working platform, and is used to inspect the mobile phone case at the inspection station and obtain a processed data set of the upper surface of the mobile phone case. The height sensing unit can be a camera, radar, light source detection, etc., which will not be described in detail here. The height sensing unit can be installed above the working platform through a support frame, and the support frame can be a gantry structure. The number of height sensing units can be set to one or two. When the number of height sensing units is set to one, the mobile phone case after flipping needs to be pulled back and enter the bottom of the height sensing unit again. When two height sensing units are set, detection can be performed in front of and behind the flipping station.

[0011] The flip assembly structure is installed on the flip station on the working platform and is used to flip the mobile phone case after inspection.

[0012] The control unit is electrically connected to the positioning component, the height sensing unit, the detection platform drive structure, and the flip component structure. The control unit is used to control the detection platform drive structure to drive the mobile phone case detection platform to move from the loading and unloading station. The mobile phone case detection platform drives the mobile phone case on it to move to the correction station. The control unit controls the positioning component to locate the position of the mobile phone case. The control unit controls the detection platform drive structure to drive the mobile phone case detection platform to enter the detection station. The height sensing unit on the detection station detects the mobile phone case on the detection station and obtains a processed data set of the front surface of the mobile phone case. The control unit constructs a spatial coordinate system A and analyzes the processed data set to obtain the coordinates (x, y, z) of the front surface of the mobile phone case. The control unit calculates (x, y, z) to obtain the smoothness (x, y, z, ), the detection platform driving structure drives the mobile phone case detection platform to move to the flipping station, and the flipping component structure flips the mobile phone case after detection. The control unit controls the detection platform driving structure to pull the mobile phone case detection platform back. The mobile phone case detection platform returns to the detection station. The height sensing unit detects the mobile phone case on the detection station and obtains a processed data set of the reverse surface of the mobile phone case. The control unit constructs a spatial coordinate system B and flips and superimposes the spatial coordinate system A and the spatial coordinate system B through calibration, analyzes the processed data set, and obtains the coordinates of the reverse surface of the mobile phone case (x', y', z'). The control unit calculates (x', y', z') to obtain the smoothness of the corresponding coordinate points on the reverse surface (x', y', z', ), and calculate the thickness coordinates of the phone case (x, y, z-z'), and convert (x, y, z, )、(x',y',z', ), (x, y, z-z') by combining the data coordinates through x = x', y = y' to obtain the combined coordinates (x, y, z-z', ), the combined coordinates (x, y, z-z', ) and a preset standard coordinate model coordinate (x, y, h 标 , ) to compare and calculate the deviation data (x, y, △h, ), where Δh = z-z'-h 标 , Then determine the deviation data (|Δh|, ) is greater than the corresponding standard deviation value (|Δh| 标 , ), and then distinguish and display the position coordinates (x, y) where the deviation data is greater than the standard deviation value.

[0013] Preferably: a smooth working groove is opened on the working platform, and the mobile phone case inspection table is slidably placed inside the smooth working groove. When the mobile phone case needs to be inspected, the initial position of the mobile phone case inspection table is at the loading and unloading station, and the mobile phone case can be placed at the corresponding position on the upper surface of the mobile phone case inspection table manually or by a robot. The mobile phone case inspection table slides through the correction station, the inspection station and the flipping station in sequence, and slides in the opposite direction to return through the inspection station and the loading and unloading station.

[0014] Preferably, the mobile phone case testing platform can be a square or rectangular platform-shaped structure, and the top surface of the mobile phone case testing platform can be higher than the top surface of the working platform to facilitate testing needs.

[0015] Preferably: the corresponding position of the upper surface of the mobile phone case detection platform can be covered with a friction layer, and the friction layer can be blue or green non-slip rubber, so as to facilitate the distinction between the mobile phone case and the placement plane and avoid relative sliding, which will not be described in detail here.

[0016] Preferably, when the operating smooth groove is a through structure, the detection platform driving structure can be installed at the bottom of the working platform, which can increase the operating space and avoid the detection platform driving structure interfering with the operation.

[0017] Preferably: the driving structure of the testing platform may include a motor, a driving belt and a driving pulley, the motor is fixedly installed at the bottom of the working platform, two driving pulleys are rotatably arranged at the bottom of the working platform, the two driving pulleys are located at both ends of the working smooth groove, the output shaft of the motor is coaxially fixedly connected to one of the driving pulleys, the two driving pulleys are wrapped with driving belts, and the driving belts are fixedly connected to the bottom of the mobile phone case testing platform.

[0018] Preferably: at least one track rod is fixedly arranged inside the working smooth groove, the track rod slides through the mobile phone case testing platform, a linear bearing is arranged inside the mobile phone case testing platform, the linear bearing is slidably nested on the track rod, and the setting of the track rod increases the stability and smoothness of the sliding of the mobile phone case testing platform.

[0019] Preferably, the positioning assembly may include a mounting frame, a bidirectional sliding drive and a clamping member, the mounting frame is fixedly mounted on the working platform, the mounting frame may be a gantry structure, the bidirectional sliding drive is fixedly mounted on the mounting frame, and the output end of the bidirectional sliding drive is slidably connected to the mounting frame and is fixedly connected to the clamping member. When the mobile phone shell detection platform slides to the correction station, the bidirectional sliding drive drives the clamping member to move closer to correct the position of the mobile phone shell on the mobile phone shell detection platform, thereby facilitating detection.

[0020] Preferably: the clamping member may include a connecting rod, a correction strip and a clamping portion, the connecting rod is fixedly connected to the bidirectional sliding drive member, the correction strip and the clamping portion form a horizontally arranged L-shaped structure and are connected to the connecting rod, the angle between the correction strip and the clamping portion is greater than a right angle, the two opposite clamping portions are parallel to the sliding direction of the mobile phone case, and when the clamping members are brought together, the inclined surface of the correction strip corrects the longitudinal position of the mobile phone case, and the clamping portion corrects the lateral position of the mobile phone case.

[0021] Preferably: the flip assembly structure may include a lifting drive structure, a rotating negative pressure tube, an adsorbent and a negative pressure structure. The lifting drive structure is installed on the working platform and is located at the flipping station. Two lifting drive structures may be provided and are located on both sides of the working smooth groove. Both ends of the rotating negative pressure tube are rotatably connected to the top of the lifting drive structure. The lifting drive structure is used to drive the rotating negative pressure tube to lift and lower. The adsorbent is fixedly connected to the rotating negative pressure tube, and the rotating negative pressure tube is connected. The rotating negative pressure tube is connected to the negative pressure structure. The mobile phone shell inspection platform enters the flipping station, and the adsorbent contacts the mobile phone shell. At this time, the air pump or the valve controlling the negative pressure is started, and negative pressure is formed inside the adsorbent and the edge of the mobile phone shell is adsorbed. The lifting drive structure drives the rotating negative pressure tube to lift, and the adsorbent pulls one end of the mobile phone shell to lift, and the mobile phone shell inspection platform moves to complete the flipping.

[0022] Preferably, the driving rotation of the negative pressure tube is performed to a lifting height of L+l', wherein L is the length of the mobile phone case and l' is the operating length.

[0023] Preferably: the lifting drive structure can be a toothed rod driven by a motor, an electric telescopic rod, etc., and can also include a side groove, a descending drive rack, a lifting drive rack, a driving gear, a driven gear and a driven rack. Two side grooves are provided and are located on both sides of the sliding direction of the mobile phone case detection platform. The lower and upper sides of the side grooves are fixedly provided with a descending drive rack and a lifting drive rack. The descending drive rack and the lifting drive rack are alternately arranged on the sliding plane projection of the mobile phone case detection platform. The working platform is rotatably provided with a driving gear and a driven gear. The driving gear and the driven gear are coaxially fixedly connected. The working platform is lifted and lowered with a driven rack. The top of the driven rack is rotatably connected with the rotating negative pressure tube, and the driven gear is meshed with the driven rack. When the mobile phone case detection platform enters the flipping station, the driving gear enters the side groove, and the driving gear is meshed with the lifting drive rack. As the mobile phone case detection platform moves, the lifting drive rack drives the driving gear to rotate, and the driven rack is lifted through the driven gear transmission. When the driving gear meshes with the descending driving rack, the descending driving rack drives the driving gear to rotate in the opposite direction, thereby causing the driven rack to descend.

[0024] Preferred: Raise the drive length of the drive rack Among them, r1 and r2 are the radii of the driving gear and the driven gear respectively.

[0025] Preferably: the driving length of the descending driving rack is Among them, r1 and r2 are the radii of the driving gear and the driven gear respectively, L is the length of the mobile phone case, and a is the flip adjustment width.

[0026] Preferably: a mobile phone case appearance uniformity detection device also includes a workstation position sensing unit, which is provided in plurality and installed on a work platform, corresponding to each workstation position, and is used to sense the sliding position of the mobile phone case detection table. The workstation position sensing unit can be an infrared sensor, a touch sensor, etc., and can be a combination of multiple types and quantities of structures to complete position sensing. It can be specifically designed according to actual conditions. The working principle is existing technology and will not be elaborated here.

[0027] Technical effects and advantages of the present invention: The present invention can visualize and digitize the appearance of the mobile phone shell through the detection results, avoiding the uncertainty of naked eye detection and the subjectivity of human factors, and improving the accuracy of detection. The analysis speed is fast and accurate, the operation is simple, and automatic flipping and coordinate system superposition are realized. The coverage range is wide, which is convenient for analyzing the entire mobile phone shell, and the data is highly targeted, which is convenient for comprehensive analysis of the central part and the surrounding parts, and defect process countermeasures can be taken for different positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The present invention is a schematic diagram of the three-dimensional structure of a mobile phone shell appearance uniformity detection device proposed by the present invention.

[0029] Figure 2 The present invention is a schematic diagram of a top view of a device for detecting uniformity of appearance of a mobile phone case.

[0030] Figure 3 for Figure 2 Schematic diagram of the partial cross-sectional structure of section AA.

[0031] Figure 4 The present invention provides a schematic structural diagram of a flip assembly structure in a mobile phone shell appearance uniformity detection device.

[0032] Figure 5 The present invention provides a schematic structural diagram of a clamping member in a device for detecting appearance uniformity of a mobile phone case.

[0033] Explanation of the accompanying drawings: working platform 1, working smooth groove 2, positioning component 3, mobile phone case detection platform 4, height sensing unit 5, flip component structure 6, mobile phone case 7, control unit 8, two-way sliding drive member 9, clamping member 10, rotating negative pressure tube 11, air pump 12, track rod 13, adsorption member 14, detection platform drive structure 15, driving belt 16, driving pulley 17, lowering driving rack 18, lifting driving rack 19, driving gear 20, driven gear 21, driven rack 22, side groove 23, correction strip part 24, clamping part 25. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0035] Example 1

[0036] refer to Figure 1-Figure 3 In this embodiment, a mobile phone shell appearance uniformity detection device is proposed, which is used to detect the uniformity of the appearance of the produced mobile phone shell, especially to detect and evaluate the thickness of the center of the mobile phone shell and the curvature around it. The mobile phone shell appearance uniformity detection device includes:

[0037] The work platform 1 can be a rectangular flat plate structure, a welded frame structure, or a production line conveying platform with smooth transmission. The specific design needs to be based on actual needs. When the work platform 1 is a rectangular flat plate structure, the work platform 1 can be installed at a sampling station, and the mobile phone shells 7 on the production line can be sampled manually or by a manipulator, and then the sampled samples can be tested. When the work platform 1 is a production line conveying platform with smooth transmission, the work platform 1 can be docked with the production line of the mobile phone shell 7 and installed on the production line to conduct a full inspection of the mobile phone shell 7. In this embodiment, the work platform 1 is a rectangular flat plate structure as an example. The four corners of the bottom of the work platform 1 can be fixedly installed with a support frame, and the bottom of the support frame can be fixedly connected with a pad. The pad is provided with mounting holes, and bolts can be used to pass through the mounting holes to fix the work platform 1 to the ground at the installation position.

[0038] The working platform 1 is provided with a working smooth groove 2, which can be a through structure, and the corresponding position of the working smooth groove 2 is provided with a loading and unloading station, a correction station, a detection station and a flipping station. A mobile phone shell detection platform 4 is slidably placed inside the working smooth groove 2, and the mobile phone shell detection platform 4 circulates and slides between the loading and unloading station, the correction station, the detection station and the flipping station. The mobile phone shell detection platform 4 is used to support the placed mobile phone shell 7. When the mobile phone shell 7 needs to be detected, the initial position of the mobile phone shell detection platform 4 is at the loading and unloading station, and the mobile phone shell 7 can be placed on the corresponding position of the upper surface of the mobile phone shell detection platform 4 by manual or mechanical hands. The mobile phone shell detection platform 4 slides through the correction station, the detection station and the flipping station in turn, and slides back in the opposite direction to pass through the detection station and the loading and unloading station. The mobile phone shell detection platform 4 can be a square or rectangular platform-shaped structure, and the top surface of the mobile phone shell detection platform 4 can be higher than the top surface of the working platform 1, so as to facilitate the detection needs. The corresponding position of the upper surface of the mobile phone case detection platform 4 can be covered with a friction layer, and the friction layer can be blue or green non-slip rubber, so as to facilitate the distinction of the mobile phone case 7 from the placement plane and avoid relative sliding, which will not be described in detail here.

[0039] The detection platform driving structure 15 is installed on the working platform 1 and connected to the mobile phone shell detection platform 4, and is used to drive the mobile phone shell detection platform 4 to move, so that the mobile phone shell detection platform 4 can be driven to change positions between the loading and unloading stations, the correction station, the detection station and the flipping station. When the operation smooth groove 2 is a through structure, the detection platform driving structure 15 can be installed at the bottom of the working platform 1, which can increase the operation space and avoid the detection platform driving structure 15 interfering with the operation. The detection platform driving structure 15 can include a motor, a drive belt 16 and a drive pulley 17, the motor is fixedly installed at the bottom of the working platform 1, and the bottom of the working platform 1 is rotatably provided with two drive pulleys 17, and the two drive pulleys 17 are located at both ends of the operation smooth groove 2, the output shaft of the motor is coaxially fixedly connected with one of the drive pulleys 17, and the two drive pulleys 17 are wound with a drive belt 16, and the drive belt 16 is fixedly connected to the bottom of the mobile phone shell detection platform 4, and the inner walls at both ends of the operation smooth groove 2 can be provided with a press sensing member, and the position of the mobile phone shell detection platform 4 can be sensed by the press sensing member, and of course, it can also be sensed by other methods, which will not be described in detail here. Of course, the detection platform driving structure 15 can also be driven by a cylinder, an electric telescopic rod, a driving motor and a screw rod combination drive, the details are not repeated here. At least one track rod 13 is fixedly arranged inside the operation smooth groove 2, and the track rod 13 slides through the mobile phone case detection platform 4. A linear bearing is arranged inside the mobile phone case detection platform 4, and the linear bearing is slidably nested on the track rod 13. The arrangement of the track rod 13 increases the stability and smoothness of the sliding of the mobile phone case detection platform 4.

[0040] The positioning assembly 3 is installed on the correction station of the working platform 1, and is used to correct the position of the mobile phone shell 7 placed on the mobile phone shell detection platform 4. The positioning assembly 3 may include a mounting frame, a bidirectional sliding drive member 9 and a clamping member 10. The mounting frame is fixedly installed on the working platform 1, and the mounting frame may be a gantry structure. The bidirectional sliding drive member 9 is fixedly installed on the mounting frame, and the output end of the bidirectional sliding drive member 9 is slidably connected to the mounting frame and fixedly connected to the clamping member 10. When the mobile phone shell detection platform 4 slides to the correction station, the bidirectional sliding drive member 9 drives the clamping member 10 to move closer to correct the position of the mobile phone shell 7 on the mobile phone shell detection platform 4, so as to facilitate detection. The clamping member 10 may include a connecting rod, a correction strip 24 and a clamping portion 25. The connecting rod is fixedly connected to the bidirectional sliding drive member 9. The correction strip 24 and the clamping portion 25 form a horizontally arranged L-shaped structure and are connected to the connecting rod. The angle between the correction strip 24 and the clamping portion 25 is greater than a right angle. The two opposite clamping portions 25 are parallel to the sliding direction of the mobile phone case 7. When the clamping member 10 is brought close, the inclined surface of the correction strip 24 corrects the longitudinal position of the mobile phone case 7, and the clamping portion 25 corrects the lateral position of the mobile phone case 7. At this time, the transmission direction of the mobile phone case 7 is the longitudinal direction, and the horizontal direction perpendicular to the longitudinal direction is the lateral direction. The details are not repeated here.

[0041] The height sensing unit 5 is installed on the detection station of the working platform 1, and is used to detect the mobile phone case 7 at the detection station and obtain the processed data set of the upper surface of the mobile phone case 7. The height sensing unit 5 can be a camera, a radar, a light source detection, etc., which will not be described in detail here. The height sensing unit 5 can be installed above the working platform 1 through a support frame, and the support frame can be a gantry structure. The number of height sensing units 5 can be set to one or two. When the number of height sensing units 5 is set to one, the mobile phone case 7 after the flip surface needs to be pulled back and enter the bottom of the height sensing unit 5 again. When two height sensing units 5 are set, they can be located in front of and behind the flipping station for detection. The specific design can be based on actual conditions. This embodiment takes one height sensing unit 5 as an example, and the specifics are not described here.

[0042] The flip assembly structure 6 is installed on the flipping station on the working platform 1, and is used to flip the mobile phone shell 7 after inspection. The flip assembly structure 6 may include a lifting drive structure, a rotating negative pressure tube 11, an adsorbent 14 and a negative pressure structure. The lifting drive structure is installed on the working platform 1 and is in the flipping station. The lifting drive structure may be provided with two, and is on both sides of the inner working smooth groove 2. The two ends of the rotating negative pressure tube 11 are rotatably connected to the top of the lifting drive structure. The lifting drive structure is used to drive the rotating negative pressure tube 11 to lift and lower. The adsorbent 14 is fixedly connected to the rotating negative pressure tube 11, and the rotating negative pressure tube 11 is connected. The adsorbent 14 may be a suction cup structure, which will not be described in detail here. The rotating negative pressure tube 11 is connected to the negative pressure structure, and the negative pressure structure may be a negative pressure supply pipeline or an air pump 12, which is specifically designed according to the equipment conditions of the factory. The mobile phone shell inspection platform 4 enters the flipping station, and the adsorbent 14 contacts the mobile phone shell 7. At this time, the air pump 12 or the valve controlling the negative pressure is started, and the negative pressure is formed inside the adsorbent 14 and the edge of the mobile phone shell 7 is adsorbed. The lifting drive structure drives the rotating negative pressure tube 11 to lift, and the adsorbent 14 pulls one end of the mobile phone shell 7 to lift, and the flipping is completed as the mobile phone shell inspection platform 4 moves. The driving and rotating negative pressure tube 11 is driven to lift and lower the height of L+l', where L is the length of the mobile phone shell 7, and l' is the operating length. It can be designed according to the rotation radius length of the adsorbent 14, which is generally 10-20mm, and of course other numerical settings are not excluded. The lifting drive structure can be a toothed rod driven by a motor, an electric telescopic rod, etc., and can also include a side groove 23, a descending drive rack 18, a lifting drive rack 19, a driving gear 20, a driven gear 21 and a driven rack 22. There are two side grooves 23, which are located on both side surfaces of the sliding direction of the mobile phone case detection platform 4. The upper and lower sides of the side grooves 23 are fixedly provided with a descending drive rack 18 and a lifting drive rack 19. The descending drive rack 18 and the lifting drive rack 19 are alternately arranged on the sliding plane projection of the mobile phone case detection platform 4. A driving gear 20 and a driven gear 21 are rotatably arranged on the working platform 1. The driving gear 20 and the driven gear 21 are coaxially fixedly connected. A driven rack 22 is lifted and lowered on the working platform 1. The top of the driven rack 22 is rotatably connected to the rotating negative pressure tube 11, and the driven gear 21 is meshed with the driven rack 22. When the mobile phone case detection platform 4 enters the flipping station, the driving gear 20 enters the side groove 23, and the driving gear 20 is meshed with the lifting drive rack 19. As the mobile phone case detection platform 4 moves, the lifting drive rack 19 drives the driving gear 20 to rotate, and the driven gear 21 is transmitted, so that the driven rack 22 is lifted. When the driving gear 20 is meshed with the descending driving rack 18, the descending driving rack 18 drives the driving gear 20 to rotate in the opposite direction, thereby causing the driven rack 22 to descend. Among them, r1 and r2 are the radii of the driving gear 20 and the driven gear 21 respectively, L is the length of the mobile phone case 7, and the driving length of the descending driving rack 18 a is the flip adjustment width, and a can be the thickness of the mobile phone shell 7, which will not be described in detail here.

[0043] There are multiple workstation position sensing units installed on the working platform 1, corresponding to each workstation position, and used to sense the sliding position of the mobile phone case detection table 4. The workstation position sensing unit can be an infrared sensor, a touch sensor, etc., and can be a combination of multiple types and quantities of structures to complete position sensing. It can be specifically designed according to actual conditions. The working principle is the existing technology and will not be elaborated here.

[0044] The control unit 8 is electrically connected to the station position sensing unit, the height sensing unit 5, the detection platform driving structure 15, and the station position sensing unit. The control unit 8 is used to control the detection platform driving structure 15 to drive the mobile phone shell detection platform 4 to move from the loading and unloading station, and the mobile phone shell detection platform 4 drives the mobile phone shell 7 on it to move into the correction station. The station position sensing unit on the correction station senses that the mobile phone shell detection platform 4 is in place. The control unit 8 controls the two-way sliding drive member 9 to drive the clamping member 10 to move closer, and the inclined surface of the correction strip 24 corrects the longitudinal position of the mobile phone shell 7, and the clamping member 25 corrects the lateral position of the mobile phone shell 7. The control unit 8 controls the detection platform driving structure 15 to drive the mobile phone shell detection platform 4 to enter the detection station, the station position sensing unit senses that the mobile phone shell detection platform 4 enters the detection station, and the height sensing unit 5 on the detection station detects the mobile phone shell 7 on the detection station, and obtains the processed data set of the front surface of the mobile phone shell 7. The control unit 8 constructs a spatial coordinate system A and analyzes the processed data set to obtain the coordinates (x, y, z) of the front surface of the mobile phone shell 7. Taking the height sensing unit 5 as a radar, the radar is used to detect the upper surface of the mobile phone case detection platform 4 to obtain the coordinates, which is a prior art and will not be described in detail here. The control unit 8 calculates (x, y, z) to obtain the smoothness (x, y, z, ), the detection platform driving structure 15 drives the mobile phone shell detection platform 4 to move to the flipping station, the station position sensing unit on the flipping station senses that the mobile phone shell detection platform 4 enters the flipping station, the adsorption member 14 is connected to the negative pressure and adsorbs the moving front end of the mobile phone shell 7, and the active gear 20 enters the side groove 23 at this time, and the lifting drive rack 19 is engaged with the active gear 20, and the lifting drive rack 19 moves with the mobile phone shell detection platform 4, and drives the active gear 20 to rotate, and the active gear 20 is driven by the driven rack 22 and the lifting gear rod 18 to lift the rotating negative pressure tube 11, so that the sliding front end of the mobile phone shell 7 is lifted, and the mobile phone shell detection platform 4 continues to slide. When the mobile rear end of the mobile phone shell 7 moves beyond the position of the rotating negative pressure tube 11, the descending drive rack 18 is engaged with the active gear 20, and the descending drive rack 18 drives the active gear 20 to rotate in the opposite direction, and the sliding front end of the mobile phone shell 7 descends and becomes the sliding rear end. When the rotating negative pressure tube 11 descends to the surface of the mobile phone shell detection platform 4, and the height with the surface of the mobile phone shell detection platform 4 is a. The adsorption member 14 disconnects the negative pressure and releases the mobile phone shell 7, thereby completing the flipping, and the control unit 8 controls the detection platform driving structure 15 to pull the mobile phone shell detection platform 4 back. The mobile phone shell detection platform 4 directly returns to the detection station, or returns to the detection station after being re-corrected by the positioning component 3 on the correction station, which will not be described in detail here. The height sensing unit 5 detects the mobile phone shell 7 on the detection station, and obtains the processed data set of the reverse surface of the mobile phone shell 7. The control unit 8 constructs the spatial coordinate system B and performs flipping and superposition of the spatial coordinate system A and the spatial coordinate system B through calibration. The calibration and flipping superposition are prior arts, which will not be described in detail here. By performing flipping and superposition through calibration, the positions of the front and back surfaces of the mobile phone shell 7 can be overlapped according to the preset basic plane (the upper surface of the mobile phone shell detection platform 4 of the spatial coordinate system B and the front top plane of the mobile phone shell 7 of the spatial coordinate system A). The stacking direction of the mobile phone case 7 can be calibrated by the quadrant. For example, the upper right corner of the moving direction of the mobile phone case 7 is used as the marking point. After the mobile phone case 7 is turned over, the marking point is at the lower right corner. The quadrant is used to rotate the lifting gear rod 180 degrees around the x-axis. At this time, the moving direction of the mobile phone case detection platform 4 is calibrated as the y-axis direction. The details are not repeated here. The processed data set is analyzed to obtain the reverse surface coordinates (x', y', z') of the mobile phone case 7. The control unit 8 calculates (x', y', z') to obtain the smoothness of the corresponding coordinate points on the reverse surface (x', y', z', ), and calculate the thickness of the mobile phone case 7 (x, y, z-z'), and convert (x, y, z, )、(x',y',z', ), (x, y, z-z') by combining the data coordinates through x = x', y = y' to obtain the combined coordinates (x, y, z-z', ), the combined coordinates (x, y, z-z', ) and a preset standard coordinate model coordinate (x, y, h标 , ) for comparison, the preset standard coordinate model coordinates (x, y, h 标 , ) can be the data obtained by testing a standard mobile phone case 7 model. The testing method is the same and will not be described in detail here. Calculate the deviation data (x, y, △h, ), where Δh = z-z'-h 标 , Then determine the deviation data (|Δh|, ) is greater than the corresponding standard deviation value (|Δh| 标 , ), (|Δh| 标 , 标 , ) can be designed according to the manufacturer's production specifications of the mobile phone case 7. The specific needs depend on the actual situation, and the specific details are not repeated here. Then the position coordinates (x, y) where the deviation data is greater than the standard deviation value are distinguished and displayed. Different standard deviation values ​​can be displayed in different colors and values. For example, △h is displayed in green, Displayed in blue, Displayed in red, Displayed in gray. The display is black, thereby improving the display efficiency. The detection result can visualize and digitize the appearance of the mobile phone shell 7, avoiding the uncertainty of naked eye detection and the subjectivity of human factors, and improving the accuracy of detection.

[0045] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A mobile phone shell appearance uniformity detection device, characterized in that: The mobile phone shell appearance uniformity detection device comprises: The working platform has loading and unloading stations, correction stations, inspection stations and flipping stations at corresponding positions; a working smooth groove is opened on the working platform, and the mobile phone case inspection table is slidably placed inside the working smooth groove; The mobile phone case inspection table is slidably mounted on the working platform and is used for placing the mobile phone cases; The detection platform driving structure is installed on the working platform and connected to the mobile phone case detection platform, and is used to drive the mobile phone case detection platform to move; the detection platform driving structure includes a motor, a driving belt and a driving pulley, the motor is fixedly installed at the bottom of the working platform, and two driving pulleys are rotatably arranged at the bottom of the working platform. The two driving pulleys are located at both ends of the working smooth groove, and the output shaft of the motor is coaxially fixedly connected to one of the driving pulleys, and the driving belts are wound around the two driving pulleys, and the driving belts are fixedly connected to the bottom of the mobile phone case detection platform; A positioning assembly is installed on the correction station of the working platform, and is used to correct the position of the mobile phone case placed on the mobile phone case detection table; the positioning assembly includes a mounting frame, a bidirectional sliding drive member and a clamping member, the mounting frame is fixedly installed on the working platform, the bidirectional sliding drive member is fixedly installed on the mounting frame, and the output end of the bidirectional sliding drive member is slidably connected to the mounting frame and fixedly connected to the clamping member; A height sensing unit is installed at the detection station of the working platform, and is used to detect the mobile phone case at the detection station and obtain a processed data set of the upper surface of the mobile phone case; The flip assembly structure is installed on the flipping station on the working platform, and is used to flip the mobile phone case after inspection; the flip assembly structure includes a lifting drive structure, a rotating negative pressure tube, an adsorption member and a negative pressure structure, the lifting drive structure is installed on the working platform and is located on the flipping station, two lifting drive structures are provided and are located on both sides of the working smooth groove, both ends of the rotating negative pressure tube are rotatably connected to the top of the lifting drive structure, the lifting drive structure is used to drive the rotating negative pressure tube to lift, the adsorption member is fixedly connected to the rotating negative pressure tube, and the rotating negative pressure tube is connected, and the rotating negative pressure tube is connected to the negative pressure structure; The control unit is electrically connected to the positioning component, the height sensing unit, the detection platform driving structure, and the flip component structure. The control unit is used to control the detection platform driving structure to drive the mobile phone case detection platform to move. The mobile phone case detection platform drives the mobile phone case thereon to move into the correction station. The control unit controls the positioning component to locate the position of the mobile phone case; the height sensing unit on the detection station detects the mobile phone case and obtains a processed data set of the front surface of the mobile phone case; the control unit constructs a spatial coordinate system A and analyzes the processed data set to obtain the coordinates (x, y, z) of the front surface of the mobile phone case; the control unit calculates (x, y, z) to obtain the smoothness of the corresponding coordinate points on the front of the mobile phone case The flip assembly structure turns the mobile phone case over; the height sensing unit detects the mobile phone case on the detection station and obtains a processed data set of the reverse surface of the mobile phone case; the control unit constructs a spatial coordinate system B; the spatial coordinate system A and the spatial coordinate system B are flipped and superimposed through calibration, the processed data set is analyzed, the coordinates of the reverse surface of the mobile phone case (x', y', z') are obtained, and the smoothness of the corresponding coordinate points on the reverse surface is calculated. And calculate the thickness coordinates (x, y, z-z') of the mobile phone case; (x, y, z-z') Combine the data coordinates by x=x', y=y' to obtain the combined coordinates Combine the coordinates (x, y, z-z', Model coordinates with a preset standard coordinate system Compare and calculate the deviation data Then determine the deviation data of the coordinates (x, y) Is it greater than the corresponding standard deviation value? Then, the position coordinates (x, y) whose deviation data are greater than the standard deviation value are distinguished and displayed.

2. A mobile phone case appearance uniformity detection device according to claim 1, characterized in that: The corresponding position of the upper surface of the mobile phone case testing platform is covered with a friction layer.

3. A mobile phone case appearance uniformity detection device according to claim 1, characterized in that: The working smooth groove is a through structure, and the detection table driving structure is installed at the bottom of the working platform.

4. A mobile phone case appearance uniformity detection device according to claim 1, characterized in that: A track rod is fixedly arranged inside the working smooth groove, and the track rod slides through the mobile phone shell detection platform. A linear bearing is arranged inside the mobile phone shell detection platform, and the linear bearing is slidably nested on the track rod.

5. A mobile phone case appearance uniformity detection device according to claim 1, characterized in that: The clamping part includes a connecting rod, a correction strip and a clamping part. The connecting rod is fixedly connected to the bidirectional sliding drive part. The correction strip and the clamping part form a horizontally arranged L-shaped structure and are connected to the connecting rod. The angle between the correction strip and the clamping part is greater than a right angle, and the two opposite clamping parts are parallel to the sliding direction of the mobile phone case.

6. A mobile phone case appearance uniformity detection device according to claim 1, characterized in that: The lifting drive structure includes a side groove, a descending drive rack, a lifting drive rack, a driving gear, a driven gear and a driven rack; two side grooves are provided and are located on both side surfaces of the sliding direction of the mobile phone case inspection platform; a descending drive rack and a lifting drive rack are fixedly provided on the upper and lower sides of the side groove; the descending drive rack and the lifting drive rack are alternately provided on the sliding plane projection of the mobile phone case inspection platform; a driving gear and a driven gear are rotatably provided on the working platform; the driving gear and the driven gear are coaxially fixedly connected; a driven rack is lifted and lowered on the working platform; the top of the driven rack is rotatably connected to the rotating negative pressure tube, and the driven gear is meshed with the driven rack.

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