Appearance detection equipment

Abstract

The utility model belongs to the technical field of detection equipment, and particularly relates to appearance detection equipment. Comprising a fixing frame, two Y-axis moving mechanisms are arranged on the fixing frame side by side, each Y-axis moving mechanism comprises a shell, a driving motor, a sliding block, a cover plate and a rear cover, the fixing frame is further provided with a sealing plate connected with the Y-axis moving mechanisms, the sliding blocks are connected with positioning jigs, the left side and the right side of the fixing frame are further vertically connected with a pair of supporting frames, and the supporting frames are connected with a clamping device. An X-axis moving mechanism is horizontally connected between the supporting frames, a Z-axis moving mechanism is further connected to the X-axis moving mechanism, a photographing module and a light source module are further sequentially arranged on the Z-axis moving mechanism, and a power switch and an operation button are further arranged at the front end of the fixed frame. Two groups of products to be detected are fixed through the two groups of positioning jigs and alternately move towards the camera end for detection, the mobile platform drives the camera to move up and down and left and right, the products on the positioning jigs are alternately detected, manpower is saved, and the product detection efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of testing equipment technology, and specifically relates to a visual inspection device. Background Technology

[0002] The mid-frame of a mobile phone is a crucial structural component, located between the front panel and the back cover. It supports various internal components such as the battery, motherboard, camera, flex cables, sensors, microphone, and earpiece, securing and mounting these parts. Simultaneously, the mid-frame protects these internal components from external impacts and damage. During the manufacturing of the mid-frame, especially when machining internal structures and side holes on products with already completed exterior finishes, metal shavings can fly onto the exterior surface, causing defects such as paint chipping and other minor damage. Manual inspection for these defects is not only labor-intensive but also prone to missing minor defects. Therefore, it is necessary to develop a device for detecting these defects in products, replacing manual inspection. Utility Model Content

[0003] The purpose of this utility model is to solve the problems existing in the background art and provide an appearance inspection device. Two sets of products to be inspected are fixed by two sets of positioning fixtures and are moved alternately toward the camera end for inspection. The moving platform drives the camera to move up, down, left and right, and alternately inspect the products on the positioning fixtures, saving manpower and improving product inspection efficiency.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: an appearance inspection device, comprising a fixed frame, on which two Y-axis moving mechanisms are arranged side by side. Each Y-axis moving mechanism includes a housing, a drive motor, a slider, a cover plate, and a rear cover. The two ends of the housing are respectively disposed on the front and rear surfaces within the fixed frame. Drive motors are installed at the two ends of the housing. A slider is slidably connected to the housing. The slider is driven by a belt drive between the drive motors. The upper and lower surfaces of the housing are respectively connected to the cover plate and the rear cover. The rear cover encloses the drive motor within the fixed frame. The cover plate is located below the slider and covers the housing. A sealing plate connecting the Y-axis moving mechanisms is also provided on the fixed frame. A positioning fixture is connected to the slider. A pair of support frames are vertically connected to the left and right sides of the fixed frame. An X-axis moving mechanism is horizontally connected between the support frames. A Z-axis moving mechanism is also connected to the X-axis moving mechanism. A camera module and a light source module are sequentially arranged on the Z-axis moving mechanism. A power switch and an operation button are also provided at the front end of the fixed frame and are electrically connected to the X-axis moving mechanism, the Y-axis moving mechanism, the Z-axis moving mechanism, the camera module, and the light source module via wires.

[0005] Furthermore, the positioning fixture is provided with a set of slots for placing the middle frame, and a through slot is vertically opened in the middle of the slot, with the middle of the middle frame suspended above the through slot.

[0006] Furthermore, the camera module includes a camera stand, a camera, and a lens. The camera stand is fixed on the Z-axis moving mechanism, the camera is vertically mounted on the camera stand, and the lower end of the camera is connected to the lens.

[0007] Furthermore, the light source module includes a light source bracket, a mounting bracket, and a strip light. The light source bracket is fixed on the Z-axis moving mechanism, the mounting bracket is set on the left and right sides of the light source bracket, and the strip light is rotatably connected to the lower end of the mounting bracket.

[0008] Furthermore, the X-axis moving mechanism includes a housing, a drive motor, a slider, a cover plate, and a rear cover. The two ends of the housing are respectively disposed on the left and right sides of the support frame. The drive motors are installed at the two ends of the housing. The slider is slidably connected to the housing. The slider is driven by belt transmission between the drive motors. The cover plate and the rear cover are respectively connected to the upper and lower sides of the housing. The rear cover encloses the drive motor in a fixed frame. The cover plate is located below the slider and blocks the housing. The slider is connected to the Z-axis moving mechanism.

[0009] Furthermore, the Z-axis moving mechanism includes a housing, a drive motor, a slider, a cover plate, and a rear cover. The drive motors are installed at both ends of the housing, and the slider is slidably connected to the housing. The slider is driven by belt transmission between the drive motors. The cover plate and the rear cover are respectively connected to the upper and lower sides of the housing. The rear cover encloses the drive motor in a fixed frame. The cover plate is located below the slider and blocks the housing. A mounting plate is also vertically connected to the slider. Multiple sets of connection holes are opened on the mounting plate. The camera module and the smoothing module are fixed at different positions through the connection holes.

[0010] Furthermore, the front end of the fixed frame is provided with an interface socket, and the four bottom corners are provided with ground support feet.

[0011] The beneficial effects of this utility model are: 1) This utility model uses the Y-axis moving mechanism to alternately drive the positioning fixture to move back and forth, and the X-axis moving mechanism to drive the Z-axis moving mechanism to move left and right, thereby driving the camera module and the light source module to move left and right together, so as to alternately take pictures and detect the middle frame on the positioning fixture. The alternating detection can simultaneously load and unload materials and detect products, and work continuously without stopping the machine.

[0012] 2) Use strip light to illuminate the product from all sides to ensure that each photo is clear and stable. Then, use visual software to perform algorithm analysis and comparison with the template to select products with three defects and trigger an alarm. This effectively avoids the omission of products with three defects. The operation is simple, the failure rate is low, the debugging and maintenance costs are low, and the production efficiency is high. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a front view of the present invention.

[0015] Figure 3 for Figure 2 Sectional view along direction A.

[0016] Figure 4 This is a schematic diagram of the connection structure between the camera module and the light source module.

[0017] Figure 5 This is a schematic diagram of the positioning fixture.

[0018] In the diagram: 1. Fixed frame; 2. Y-axis moving mechanism; 3. Housing; 4. Drive motor; 5. Slider; 6. Cover plate; 7. Back cover; 8. Sealing plate; 9. Positioning fixture; 10. Support frame; 11. X-axis moving mechanism; 12. Z-axis moving mechanism; 13. Camera module; 14. Light source module; 15. Power switch; 16. Operation button; 17. Slot; 18. Through slot; 19. Camera bracket; 20. Camera; 21. Lens; 22. Light source bracket; 23. Mounting bracket; 24. Strip light; 25. Mounting plate; 26. Connection hole; 27. Interface socket; 28. Grounding foot. Detailed Implementation

[0019] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0020] Example: Figure 1-5As shown, the appearance inspection device of this utility model includes a fixed frame 1. Two Y-axis moving mechanisms 2 are arranged side-by-side on the fixed frame 1. Each Y-axis moving mechanism 2 includes a housing 3, a drive motor 4, a slider 5, a cover plate 6, and a rear cover 7. The two ends of the housing 3 are respectively disposed on the front and rear surfaces within the fixed frame 1. Drive motors 4 are mounted on the two ends of the housing 3. The slider 5 is slidably connected to the housing 3 and driven by a belt drive between the drive motors 4. The cover plate 6 and the rear cover 7 are respectively connected to the upper and lower surfaces of the housing 3. The rear cover 7 encloses the drive motor 4 within the fixed frame 1. The cover plate 6 is located below the slider 5, shielding the housing 3. The frame 1 is also equipped with a sealing plate 8 connecting to the Y-axis moving mechanism 2. A positioning fixture 9 is connected to the slider 5. A pair of support frames 10 are vertically connected to the left and right sides of the fixed frame 1. An X-axis moving mechanism 11 is horizontally connected between the support frames 10. A Z-axis moving mechanism 12 is connected to the X-axis moving mechanism 11. A camera module 13 and a light source module 14 are sequentially mounted on the Z-axis moving mechanism 12. A power switch 15 and an operation button 16 are located at the front end of the fixed frame 1, and are electrically connected to the X-axis moving mechanism 11, Y-axis moving mechanism 2, Z-axis moving mechanism 12, camera module 13, and light source module 14 via wires. An interface socket 27 is also connected to the front end of the fixed frame 1, and ground supports 28 are connected to the four corners of the bottom. The sealing plate 8 fills the gap between the Y-axis moving mechanism 2 and the fixed frame 1, and can be used as a background plate to prevent light transmission attenuation when the light source shines on it, thus affecting the lighting and photography effect. The ground support 28 is made of bolt structure, and the height of the four ground support 28 can be adjusted individually to level the fixed frame 1. It is suitable for use on planes with low levelness without affecting the calibration effect.

[0021] refer to Figure 1 , Figure 2 and Figure 3 During testing, eight mid-frames to be tested are placed on positioning fixtures 9 at the left and right workstations, with four mid-frames at each workstation. The left and right workstations are started sequentially via operation button 16. The left workstation first moves to the photo-taking position to take pictures and determine if the products are good or bad. During testing at the left workstation, the three-axis moving mechanism moves to four positions sequentially to take pictures of each mid-frame, generating four judgment results at once after four takes. The left workstation then returns to its initial position, and the right workstation automatically starts to take pictures and perform testing. After the left workstation finishes testing, the products are sorted and stored. The operator places OK products on the OK tray and NG products on the NG tray, then places four products to be tested, and starts the left workstation. After the right workstation completes its measurement and returns to its initial position, the left workstation starts taking pictures and measuring. The operator places OK products on the OK tray and NG products on the NG tray, then places four products to be tested, and starts the right workstation. This alternating left and right operation allows for continuous, non-stop testing.

[0022] The images detected during the process are distinguished by comparison with qualified products by the processor. When a defective product is detected, an audible and visual alarm prompts the operator to sort it. The left front end of the fixed frame 1 is connected to the interface socket 27, which is connected to the outside via a connecting cable to provide power. The power switch 15 located at the right front end controls the power supply between the downstream power supply and each component. The left start, right start, emergency stop, and photo taking buttons are installed sequentially in the middle of the front end of the fixed frame 1. The emergency stop button is used to cut off the power to all components in an emergency. The photo taking button is connected to the photo taking module 13 and the light source module 14 via wires. When the photo taking is started, the strip light 24 illuminates first, and then the camera 20 takes a picture. The left start button is connected to the X-axis moving mechanism 11, the Y-axis moving mechanism 2, and the Z-axis moving mechanism 12. According to the preset program of the processor, after the left start button is pressed, the Y-axis moving mechanism 2 works first, driving the positioning fixture 9 to move backward to the lower end of the X-axis moving mechanism 11. At the same time, the Z-axis moving mechanism 12 is moved to the top of the positioning fixture 9 under the movement of the X-axis moving mechanism 11. Then, the Z-axis moving mechanism 12 drives the camera module 13 and the light source module 14 to move down to the predetermined position for illumination and photography. After taking pictures of the four products on the positioning fixture 9 in sequence, they are reset so that each component returns to its initial position. The positioning fixture 9 is located at the front end of the fixed frame 1 and can be used for loading and unloading operations.

[0023] The positioning fixture 9 has a set of slots 17 for placing the middle frame. A through slot 18 is vertically opened in the middle of the slot 17, and the middle of the middle frame is suspended above the through slot 18.

[0024] refer to Figure 5 When loading or unloading materials, the positioning fixture 9 can easily remove or place the middle frame through the suspended part at the through slot 18, which can speed up the efficiency of loading and unloading materials.

[0025] The camera module 13 includes a camera holder 19, a camera 20 and a lens 21. The camera holder 19 is fixed on the Z-axis moving mechanism 12, the camera 20 is vertically mounted on the camera holder 19, and the lower end of the camera 20 is connected to the lens 21.

[0026] The light source module 14 includes a light source bracket 22, a mounting bracket 23, and a strip light 24. The light source bracket 22 is fixed on the Z-axis moving mechanism 12, the mounting bracket 23 is set on the left and right sides of the light source bracket 22, and the strip light 24 is rotatably connected to the lower end of the mounting bracket 23.

[0027] refer to Figure 4 The two ends of the strip light 24 are rotatably connected to the mounting bracket 23, and the lighting position and angle of the strip light 24 under the mounting bracket 23 can be manually adjusted to facilitate the illumination of the two edges of the middle frame, improve the clarity of the photo, and the camera 20 is located in the middle of the two mounting brackets 23. When taking a photo, the strip lights 24 on the left and right sides can provide angle-free illumination to the middle frame to avoid misjudgment.

[0028] The X-axis moving mechanism 11 includes a housing 3, a drive motor 4, a slider 5, a cover plate 6, and a rear cover 7. The two ends of the housing 3 are respectively set on the left and right sides of the support frame 10. The drive motor 4 is installed at both ends of the housing 3. The slider 5 is slidably connected to the housing 3. The slider 5 is driven by the belt drive between the drive motors 4. The cover plate 6 and the rear cover 7 are respectively connected to the upper and lower sides of the housing 3. The rear cover 7 encloses the drive motor 4 in the fixed frame 1. The cover plate 6 is located below the slider 5 and covers the housing 3. The slider 5 is connected to the Z-axis moving mechanism 12.

[0029] Z-axis moving mechanism 12 includes housing 3, drive motor 4, slider 5, cover plate 6 and rear cover 7. Drive motor 4 is installed at both ends of housing 3. Slider 5 is slidably connected to housing 3. Slider 5 is driven by belt transmission between drive motor 4. Cover plate 6 and rear cover 7 are respectively connected to the upper and lower sides of housing 3. Rear cover 7 encloses drive motor 4 in fixed frame 1. Cover plate 6 is located below slider 5 and covers housing 3. Mounting plate 25 is also vertically connected to slider 5. Multiple sets of connecting holes 26 are opened on mounting plate 25. The imaging module 13 and smoothing module are fixed in different positions through connecting holes 26.

[0030] refer to Figure 4 The camera bracket 19 and the light source bracket 22 are fixed to different positions on the mounting plate 25 via bolts at the connecting hole 26. The lighting effect and focus parameters can be manually adjusted for photography. The drive motor 4 is connected to the operation button 16 via wires. When started, it drives the slider 5 to move up and down vertically, thereby moving the camera 20 and the strip light 24 up and down together, facilitating product lighting and photography. Similarly, when the X-axis moves, the slider 5 will drive the Z-axis moving mechanism 12 to move left and right as a whole, allowing the camera module 13 and the light source module 14 to switch to the left and right work positions for continuous testing without stopping the machine.

[0031] This invention utilizes a Y-axis moving mechanism to alternately move the positioning fixture forward and backward, and an X-axis moving mechanism to move the Z-axis moving left and right. This, in turn, moves the imaging module and the light source module left and right, allowing for alternating imaging and inspection of the middle frame on the positioning fixture. This alternating inspection enables simultaneous loading / unloading and product inspection, allowing for continuous, uninterrupted operation. Strip lighting is used to illuminate the product from all sides, ensuring clear and stable images for each shot. Visual software then performs algorithmic analysis and comparison with the template to identify and alert on products with three defects (damage, defects, and defects), effectively preventing the omission of such products. The invention is simple to operate, has a low failure rate, low debugging and maintenance costs, and high production efficiency.

[0032] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. An appearance inspection device, characterized in that: The device includes a fixed frame on which two Y-axis moving mechanisms are arranged side-by-side. Each Y-axis moving mechanism includes a housing, a drive motor, a slider, a cover plate, and a rear cover. The two ends of the housing are respectively located on the front and rear surfaces within the fixed frame. Drive motors are installed at both ends of the housing. A slider is slidably connected to the housing and driven by a belt drive between the drive motors. The cover plate and the rear cover are respectively connected to the top and bottom surfaces of the housing. The rear cover encloses the drive motors within the fixed frame. The cover plate is located below the slider and covers the housing. The fixed frame also has a sealing plate connecting the Y-axis moving mechanisms. A positioning fixture is connected to the slider. A pair of support frames are vertically connected to the left and right sides of the fixed frame. An X-axis moving mechanism is horizontally connected between the support frames. A Z-axis moving mechanism is also connected to the X-axis moving mechanism. A camera module and a light source module are sequentially arranged on the Z-axis moving mechanism. A power switch and an operation button are also provided at the front end of the fixed frame and are electrically connected to the X-axis moving mechanism, Y-axis moving mechanism, Z-axis moving mechanism, camera module, and light source module via wires.

2. The appearance inspection device according to claim 1, characterized in that: The positioning fixture is provided with a set of slots for placing the middle frame. A through slot is vertically opened in the middle of the slot, and the middle part of the middle frame is suspended above the through slot.

3. The appearance inspection device according to claim 1, characterized in that: The camera module includes a camera stand, a camera, and a lens. The camera stand is fixed on a Z-axis moving mechanism, the camera is vertically mounted on the camera stand, and the lower end of the camera is connected to the lens.

4. The appearance inspection device according to claim 1, characterized in that: The light source module includes a light source bracket, a mounting bracket, and a strip light. The light source bracket is fixed on the Z-axis moving mechanism, the mounting bracket is set on the left and right sides of the light source bracket, and the strip light is rotatably connected to the lower end of the mounting bracket.

5. The appearance inspection device according to claim 1, characterized in that: The X-axis moving mechanism includes a housing, a drive motor, a slider, a cover plate, and a rear cover. The two ends of the housing are respectively set on the left and right sides of the support frame. The drive motor is installed at both ends of the housing. The slider is slidably connected to the housing. The slider is driven by belt transmission between the drive motors. The cover plate and the rear cover are respectively connected to the upper and lower sides of the housing. The rear cover encloses the drive motor in a fixed frame. The cover plate is located below the slider and blocks the housing. The slider is connected to the Z-axis moving mechanism.

6. The appearance inspection device according to claim 1, characterized in that: The Z-axis moving mechanism includes a housing, a drive motor, a slider, a cover plate, and a rear cover. Drive motors are installed at both ends of the housing, and a slider is slidably connected to the housing. The slider is driven by a belt drive between the drive motors. The cover plate and the rear cover are respectively connected to the upper and lower sides of the housing. The rear cover encloses the drive motor in a fixed frame. The cover plate is located below the slider and covers the housing. A mounting plate is also vertically connected to the slider. Multiple sets of connection holes are opened on the mounting plate. The camera module and the smoothing module are fixed at different positions through the connection holes.

7. The appearance inspection device according to claim 1, characterized in that: The front end of the fixed frame is also provided with an interface socket, and the bottom four corners are also provided with ground support feet.

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