Automatic detection equipment for small hardware parts

Abstract

This utility model belongs to the technical field of automated testing equipment, and particularly relates to an automated testing equipment for small hardware parts. The automated testing equipment for small hardware parts includes a workbench and a control module, as well as a flexible feeding module, a transfer module, a turret pick-and-place module, a testing module, and a hopper station. The transfer module includes a frame, a rotary drive mechanism mounted on the support frame, and a turntable driven by the rotary drive mechanism to rotate. A plurality of contouring grooves are evenly distributed on the upper surface of the turntable. The testing module includes a first testing module and a second testing module, which respectively test the horizontal and vertical directions of the small hardware parts. The flexible feeding module feeds the small hardware parts into the contouring grooves, and the turret pick-and-place module, after testing by the testing module, discharges the small hardware parts from the contouring grooves into NG and OK hoppers respectively. This utility model can realize flexible feeding, positioning, automatic high-precision testing, and sorting of small hardware parts.

Description

Technical Field

[0001] This utility model belongs to the field of automated testing equipment technology, and in particular relates to an automated testing equipment for small hardware parts. Background Technology

[0002] In the mobile phone manufacturing industry, electroplated metal parts (such as hook parts) are key components, and their quality directly affects the assembly precision and lifespan of the mobile phone. Currently, mobile phone hook parts require full inspection of the products cut from the mold before shipment. The inspection includes bending angle, cutting edge size, and for some products, it also needs to be checked for defects such as missing gold plating.

[0003] Traditional detection methods mainly have the following problems: 1. Low efficiency of manual inspection: Manual measurement using projectors or three-dimensional measuring instruments is slow and cannot meet the inspection needs of mass production. Furthermore, long-term inspection can easily lead to visual fatigue, resulting in missed or false detections.

[0004] 2. Insufficient inspection accuracy: Manual measurement is subject to subjective errors, and it is difficult to achieve high precision in the inspection of minute dimensions and angles, which cannot meet the quality standards of precision mobile phone components.

[0005] 3. Limited material feeding methods: Traditional material feeding methods often use rigid feeding equipment such as vibratory feeders. For irregularly shaped and easily damaged electroplated small metal parts, this can easily cause secondary damage such as surface scratches and deformation, affecting the product qualification rate. At the same time, rigid feeding makes it difficult to achieve precise positioning of parts, increasing the difficulty of subsequent inspection.

[0006] 4. Low level of automation: Most existing testing equipment are single-function independent devices, lacking integrated solutions for feeding, positioning, testing and sorting. The connection between each link is not smooth, resulting in low overall testing efficiency, large equipment footprint, and high labor and space costs.

[0007] As the mobile phone manufacturing industry continues to demand higher product quality and production efficiency, there is an urgent need for equipment that can achieve efficient, accurate, and automated testing to meet the testing needs of electroplated hardware parts such as mobile phone hooks. Utility Model Content

[0008] To address the technical problems existing in the prior art, this application provides an automated testing equipment for small hardware parts that can achieve flexible feeding, positioning, automatic high-precision detection and sorting.

[0009] To achieve the above objectives, this utility model provides the following technical solution: An automated inspection device for small hardware parts includes a workbench and a control module mounted on the workbench, and further includes... Flexible feeding module: set on the workbench, used for feeding and loading small hardware parts; Transfer module: includes a support frame set on the workbench, a rotary drive mechanism set on the support frame, and a transfer disk driven to rotate by the rotary drive mechanism, with a plurality of contoured grooves evenly distributed on the upper surface of the transfer disk; Turret loading and unloading module: used for vacuum adsorption, rotary transfer and vacuum breaking unloading of small hardware parts; Inspection module: includes a first inspection module and a second inspection module installed on the transfer path of the small hardware parts by the turret pick-and-place module, wherein the first inspection module and the second inspection module respectively inspect the small hardware parts in the horizontal and vertical directions; Material storage station: includes NG material storage and OK material storage, which are used to collect defective products and qualified products respectively after inspection; The flexible feeding module feeds small metal parts into the contouring groove, and the turret pick-and-place module discharges the small metal parts in the contouring groove into the NG and OK material bins respectively after they are detected by the detection module.

[0010] Preferably, the support frame includes a base plate fixedly connected to the workbench, a support rod fixedly connected vertically to the base plate, and a top plate fixedly connected horizontally to the support rod; the rotary drive mechanism includes a reducer fixedly connected to the top plate and a rotary drive motor fixedly connected to the reducer, wherein the rotary drive motor drives the reducer to drive the turntable to rotate via the output shaft of the reducer.

[0011] Preferably, a through hole is provided at the bottom of the contouring groove, penetrating the central turntable; a blowpipe is vertically fixedly inserted into the top plate, the lower end of the blowpipe is connected to a blowpipe air source; a recovery pipe is provided on one side of the support frame, and a recovery box is connected to the lower end of the recovery pipe; when the contouring groove rotates to above the blowpipe, the blowpipe air source blows gas through the blowpipe towards the through hole of the central turntable; when small hardware parts are placed in the contouring groove, the small hardware parts are blown into the recovery pipe and collected by the recovery box.

[0012] Preferably, a mounting plate is fixedly connected to the top plate, and a photoelectric sensor is fixedly inserted into the mounting plate. The photoelectric sensor is used to detect whether there are small hardware parts in the contour groove located below it.

[0013] Preferably, the flexible feeding module includes a feeding bin disposed on the workbench, a spider robot disposed on one side of the feeding bin, a vibrating feed plate disposed below the end of the spider robot, and a vibration drive component capable of driving the vibrating feed plate to vibrate.

[0014] Preferably, the turret pick-and-place module between the transfer module and the detection module is further provided with a precision positioning module on the transfer path of the small hardware parts; the precision positioning module includes a positioning bracket fixedly connected to the workbench, a connecting plate horizontally fixedly connected to the positioning bracket, a positioning disk fixedly connected to the connecting plate, two opposing positioning claws slidably embedded in the positioning disk, and a positioning drive component for driving the opening and closing of the positioning claws.

[0015] Preferably, the positioning drive assembly includes a positioning motor vertically fixedly connected to the connecting plate, a rotating sleeve fixedly sleeved on the output shaft of the positioning motor, four positioning rollers evenly distributed on the upper end face of the rotating sleeve, and an annular spring embedded in the outer circumference of the positioning disk; when the four positioning rollers abut against the corresponding positioning claws, they can drive the positioning claws to move away from each other; when the four positioning rollers disengage from the corresponding positioning claws, the annular springs can cause the positioning claws to move towards each other.

[0016] Preferably, the first detection module includes a first bracket fixedly connected to the worktable, a first detection camera horizontally arranged on the first bracket, and a backlight arranged at a position opposite to the first detection camera, the backlight being fixedly connected to the backlight bracket; the second detection module includes a second bracket fixedly connected to the worktable, a second detection camera horizontally arranged on the second bracket, an annular light source arranged at a position opposite to the second detection camera, and a reflector arranged inside the annular light source, the reflector and the annular light source being fixedly connected to the annular light source bracket; the first detection camera and the second detection camera are arranged at a certain angle according to the part of the small metal part to be detected, the first detection camera detects the horizontal direction of the small metal part, and the second detection camera detects the vertical direction of the small metal part by receiving the image of the small metal part reflected by the reflector.

[0017] Compared with the prior art, the beneficial effects of this utility model are: 1. High efficiency: The combination of the flexible feeding module and the transfer module enables rapid feeding and continuous conveying of small hardware parts. The testing module can complete the testing of multiple indicators in a short time, greatly improving the testing efficiency and meeting the needs of mass production.

[0018] 2. High precision: The combination of the precision positioning module and the detection module ensures high precision in the detection of small hardware parts, effectively reducing the rate of missed and false detections and improving product quality.

[0019] 3. Non-destructive feeding: The flexible feeding method of vibrating tray and spider robot avoids damage to small metal parts during the feeding process, improves product qualification rate and reduces production costs.

[0020] 4. High degree of automation: The fully automated process from material supply and testing to sorting reduces human intervention, lowers labor costs, and improves the stability and consistency of the production process, making it easier for enterprises to manage production and trace quality.

[0021] 5. High versatility: This equipment can adapt to the testing needs of small hardware parts of different specifications and types, and has good versatility and expandability. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model.

[0023] Figure 2 The embodiments of this utility model are based on Figure 1 A frontal view of the structure.

[0024] Figure 3 The embodiments of this utility model are based on Figure 1 A top-view structural diagram.

[0025] Figure 4 This is a schematic diagram of the flexible feeding module according to an embodiment of the present invention.

[0026] Figure 5 This is a three-dimensional structural diagram of the transfer module according to an embodiment of the present utility model.

[0027] Figure 6 This is a side view of the transfer module according to an embodiment of the present invention.

[0028] Figure 7 This is a schematic diagram of the structure of the turret loading and unloading module, the detection module, and the silo station according to an embodiment of the present utility model.

[0029] Figure 8 This is a structural schematic diagram of the precision positioning module according to an embodiment of the present invention.

[0030] Figure 9 This is a schematic diagram of the connection between the positioning disk, positioning claw, and annular spring in an embodiment of this utility model.

[0031] Figure 10 The embodiments of this utility model are based on Figure 9 A schematic diagram of the structure viewed from below.

[0032] Figure 11 The embodiments of this utility model are based on Figure 9 A top-view structural diagram.

[0033] Figure 12 This is a schematic diagram of the detection module according to an embodiment of the present invention.

[0034] In the diagram: 11. Support frame; 12. Workbench. 2. Control module; 21. Control bracket; 22. Controller; 23. Control display screen. 3. Flexible feeding module; 31. Feeding hopper; 311. Vertical vibrator; 312. Replenishment hopper; 32. Spider-arm robot; 321. Fixed plate; 322. Vertical plate; 323. Control box; 324. Parallel robot arm; 325. Rotary assembly; 326. Vacuum nozzle; 327. Industrial camera; 33. Vibrating tray; 34. Vibration drive assembly; 341. Mounting box. 4. Transfer module; 41. Base plate; 42. Support rod; 43. Top plate; 44. Reducer; 45. Rotary drive motor; 46. Transfer plate; 461. Contouring groove; 462. Material handling station; 463. Transfer plate through hole; 464. Spraying station; 47. Spraying pipe; 48. Recycling pipe; 481. Recycling box; 49. Mounting plate; 491. Photoelectric sensor. 5. Turret loading / unloading module; 51. Turret drive motor; 52. Cam divider; 53. Rotating frame; 54. Vacuum adsorption assembly; 55. Mounting bracket; 56. Vacuum generating assembly; 57. Vacuum breaking assembly. 6. Precision positioning module; 61. Positioning bracket; 62. Connecting plate; 63. Positioning disk; 631. Positioning disk through hole; 632. Annular groove; 64. Positioning claw; 641. Notch; 65. Limiting plate; 66. Positioning motor; 67. Rotating sleeve; 671. Fixed shaft; 68. Positioning roller; 69. Annular spring. 7. Inspection Module; 71. First Inspection Module; 711. First Support; 712. First Inspection Camera; 713. Backlight; 714. Backlight Support; 72. Second Inspection Module; 721. Second Support; 722. Second Inspection Camera; 723. Ring Light Source; 724. Reflector; 73. Inspection Station; 74. Qualified Product Unloading Station; 75. Unqualified Product Unloading Station; 76. Precision Positioning Station. 8. Material storage station, 81. NG material storage, 82. OK material storage. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0036] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Example

[0037] See appendix Figure 1 , 2 As shown in Figures 1 and 3, an automated testing equipment for small hardware parts includes a hollow frame-type support frame 11, a workbench 12 horizontally fixed to the upper end face of the support frame 11 by bolts, and a control module 2, a flexible feeding module 3, a transfer module 4, a turret pick-and-place module 5, a precision positioning module 6, a testing module 7, and a silo station 8 installed on the workbench 12.

[0038] The flexible feeding module 3 is used to feed and load small hardware parts to the transfer module 4; the transfer module 4 is located on one side of the flexible feeding module 3 and is used to temporarily store and transfer the small hardware parts fed by the flexible feeding module 3; the turret pick-and-place module 5 is located on one side of the feeding module 3 and is used to perform vacuum adsorption, rotary transfer, and vacuum breaking unloading of the small hardware parts on the transfer module 4; the detection module 7 includes a first detection module 71 and a second detection module 72 located on the transfer path of the small hardware parts in the turret pick-and-place module 5, and includes a first detection module 71 and a second detection module 72 for horizontal and vertical detection of the small hardware parts, respectively; the precision positioning module 6 is located between the transfer module 4 and the detection module 71. The turret pick-and-place module 5 between groups 5 is used for secondary positioning of the small hardware parts picked up by the turret pick-and-place module 5 on the transfer path of the small hardware parts; the silo station 8 includes NG silo 81 and OK silo 82, which are used to collect unqualified products and qualified products after inspection, respectively; the control module 2 includes a control bracket 21 fixedly installed on the upper end face of the workbench 12, a controller 22 fixedly installed on the control bracket, and a control display screen 23 electrically connected to the controller 22. The controller 22 is the prior art and it is electrically connected to and controls the above-mentioned flexible feeding module 3, transfer module 4, turret pick-and-place module 5, precision positioning module 6, detection module 7, etc.

[0039] See Figure 4 As shown, the flexible feeding module 3 includes a feeding bin 31 fixedly installed on the workbench 12, a spider robot 32 fixedly installed on the workbench 12 on one side of the feeding bin 31, a vibrating material plate 33 set below the end of the spider robot 32, and a vibration drive component 34 that can drive the vibrating material plate 33 to vibrate.

[0040] Specifically, the feeding hopper 31 is existing technology, comprising a conventional vibrator 311 fixedly mounted on the upper surface of the workbench 12 by bolts, and a replenishment hopper 312 fixedly mounted on the upper vibrating end of the vibrator 311. The replenishment hopper 312 has an inlet at its upper end for placing small hardware parts and an outlet at its lower end for feeding the small hardware parts into the vibrating feed pan 33. When the feeding hopper 31 is in use, the vibration of the vibrator 311 causes the small hardware parts in the replenishment hopper 312 to enter the vibrating feed pan 33. Its working principle is existing technology and will not be described in detail here.

[0041] The spider robot 32 is existing technology. For example, a parallel robot of model P100J-03-H from Topstar can be selected. The spider robot 32 includes a fixed plate 321 fixedly installed on the upper surface of the workbench 12 on one side of the loading bin 31, a vertical plate 322 fixedly installed on the upper surface of the fixed plate 321, and a control box 323 fixedly installed on the upper surface of the vertical plate 322 by bolts. The control box 323 is equipped with a robot controller and an image recognition module (not shown in the figure). A parallel manipulator 324 is installed on the control box 323. A rotating component 325 is installed at the end of the parallel manipulator 324. A vacuum nozzle 326 is fixedly installed on the rotating output end of the rotating component 325. The rotating component 325 can drive the vacuum nozzle 326 to rotate, thereby adjusting the direction of the small hardware parts being picked up.

[0042] In addition, it includes an industrial camera 327 mounted on the control housing 323, which is installed above the vibrating material tray 33. This camera captures real-time images of the small metal parts, identifies their position and orientation, and transmits the data to the robot controller. The robot controller plans the grasping path and actions of the parallel robotic arm 324 based on the image information to achieve precise grasping. It also includes necessary components, such as existing vacuum generating components that connect to the vacuum nozzle 326. When the spider-hand robot 32 is in use, the industrial camera 327 takes pictures of the small metal parts in the vibrating material tray 33 and transmits the images to the image recognition module for image recognition to determine the relative coordinates of the small metal parts. The robot controller controls the parallel robotic arm 324 to move the vacuum nozzle 326 to above the small metal part to be picked up and pick it up. Then, the small metal part is transferred to the transfer module 4. The above working principle and process are existing technology and will not be elaborated further here.

[0043] The vibration drive assembly 34 is existing technology, and can be a TRANSIA high-performance flexible vibratory plate. The vibration drive assembly 34 includes a mounting box 341 with an upper opening on the upper surface of a fixed plate 321, fixed with bolts; four voice coil motors (not shown in the figure) are vertically fixed at the four corners of the mounting box 341 with bolts; and a vibratory material plate 33 is fixedly mounted on top of the voice coil motors. The voice coil motors cause the vibratory material plate 33 to vibrate, causing the small metal parts to move and rotate slowly within the vibratory material plate 33, preventing collisions and friction between the small metal parts and protecting the electroplated layer from damage. The vibration drive assembly 34 can adjust the vibration frequency and amplitude according to the shape and material of the parts to ensure that the parts are dispersed in a suitable posture within the vibratory material plate 33.

[0044] See Figure 5 , 6 As shown, the transfer module 4 is set on the workbench 12 of the spider robot 32 on the side away from the loading bin 31. The transfer module 4 includes a support frame fixedly installed on the workbench 12. The support frame includes a base plate 41 fixedly connected to the workbench 12 by bolts, four support rods 42 vertically fixedly connected to the base plate 41 by bolts, and a top plate 43 horizontally fixedly connected to the upper end face of the support rods 42 by bolts. A rotary drive mechanism is set on the top plate 43. The rotary drive mechanism includes a reducer 44 fixedly connected to the top plate 43 by bolts, and a rotary drive motor 45 fixedly connected to the reducer 44. The output shaft of the rotary drive motor 45 is connected to the input shaft of the reducer 44 through a coupling. The transfer plate 46 is fixedly connected to the output shaft of the reducer 44 by bolts. The transfer plate 46 and the output shaft of the reducer 44 are coaxially arranged. The rotary drive motor 45 drives the transfer plate 46 to rotate through the reducer 44. The driving principle is existing technology.

[0045] A number of contour grooves 461 are evenly distributed on the upper surface of the turntable 46. For example, in this embodiment, 12 contour grooves 461 are provided. The contour grooves 461 are matched with the structure of the small hardware parts so that when the small hardware parts are placed in the contour grooves 461, they can fit into the contour grooves 461 to perform preliminary positioning of the small hardware parts.

[0046] For ease of description, a fixed position of the turntable 46 is designated as a material handling station 462. The turret pick-up and drop module 5 continuously picks up and transfers small metal parts in the contour groove 461 at the material handling station 462. Since the turret pick-up and drop module 5 may fail to pick up small metal parts, to prevent the spider robot 32 from reloading the contour groove 461 after a failure, in this embodiment, a turntable through hole 463 penetrating the turntable 46 is provided at the bottom of each contour groove 461. A blowpipe 47 is vertically fixed inside the top plate 43, and the lower end of the blowpipe 47 is connected to an existing blowpipe air source (not shown in the figure). For ease of description, a fixed position of the turntable 46 on one side of the material handling station 462 is designated as a blowpipe station 464, and the blowpipe 47 blows air into the contour groove 461 at the blowpipe station 464.

[0047] To collect small metal parts blown out from the contouring groove 461, a hollow recovery pipe 48 is provided on one side of the support frame. The upper opening of the recovery pipe 48 is located above the contouring groove 461 at the blowing station 464, and the lower opening of the recovery pipe is connected to a recovery box 481. When the contouring groove 461 rotates to be above the blowing pipe 47 at the blowing station 464, the blowing air source blows gas through the blowing pipe 47 to the through hole of the central turntable. When small metal parts are placed in the contouring groove 461, the small metal parts are blown into the recovery pipe 48 and collected by the recovery box 481.

[0048] Furthermore, to avoid blowing each contouring groove 461 individually, a mounting plate 49 is bolted to the top plate 43, and a photoelectric sensor 491 is horizontally fixedly inserted into the mounting plate 49. The photoelectric sensor 491 is used to detect whether there are small metal parts in the contouring groove 461 below it. The photoelectric sensor 491 can be arranged opposite to the blowing pipe 47. When the photoelectric sensor 491 detects that there are uncollected small metal parts in the contouring groove 461, when the contouring groove 461 rotates to the blowing station 464, the gas sprayed from the blowing pipe 47 blows the uncollected small metal parts in the contouring groove 461 into the recovery pipe 48.

[0049] See Figure 7As shown, to achieve periodic cyclical material handling of small metal parts within the material handling station 462, a turret handling module 5 is installed on the workbench 12 of the transfer module 4 on the side away from the flexible feeding module. A first detection module 71 and a second detection module 72 are installed on the workbench 12 along the transfer path of the small metal parts by the turret handling module 5. The first detection module 71 and the second detection module 72 respectively inspect the horizontal and vertical directions of the small metal parts. For ease of description, a fixed position on the transfer path of the turret handling module 5 is designated as the inspection station 73. The first detection module 71 and the second detection module 72 are used to measure the bending angle and cut size of the small metal parts at the inspection station 73, and to identify defects such as incomplete gold plating. The detection method is existing technology and will not be described in detail here.

[0050] In addition, a material storage station 8 is set on the workbench 12, which includes an NG material storage 81 and an OK material storage 82 for collecting defective and qualified products after inspection, respectively. For ease of description, a fixed position on the transfer path of the turret pick-and-place module 5 after inspecting the small hardware parts is set as the qualified product unloading station 74, and the OK material storage 82 is set on the workbench 12 at the qualified product unloading station 74; a fixed position on the transfer path of the turret pick-and-place module 5 between the inspection station 73 and the qualified product unloading station 74 is set as the defective product unloading station 75, and the NG material storage 81 is set on the workbench 12 at the defective product unloading station 75.

[0051] Furthermore, a fixed position on the transfer path of the small hardware parts by the turret pick-up and drop module 5 between the pick-up station 462 and the inspection station 73 is set as the precision positioning station 76. A precision positioning module 6 is set at the precision positioning station 76. During the transfer process, the small hardware parts are repositioned by the precision positioning module 6 to adjust their posture and calibrate their position, ensuring that the small hardware parts are in the precise position required for inspection.

[0052] The turret pick-and-place module 5 is existing technology. It includes a turret drive motor 51 fixed on the worktable 12 and a cam divider 52 driven by the turret drive motor 51. The cam divider 52 is fixedly mounted on the worktable 12 by bolts, and its rotating end can rotatably pass through the worktable 12 and extend above the worktable 12. The cam divider 52 can be an existing model 80DFN-12 Shenzhen Gaoshida lifting divider. A rotating frame 53 is fixedly mounted on the cam divider 52. Twelve sets of existing vacuum adsorption components 54 for picking up and placing small hardware parts are evenly mounted on the rotating frame 53. A mounting frame 55 is fixedly mounted on the upper surface of the worktable 12 on one side of the rotating frame 53. A vacuum generating component 56 and a vacuum breaking component 57 are provided on the mounting frame 55.

[0053] When the turret pick-up and drop module 5 picks up and drops small metal parts from the contour slot 461, the turret drive motor 51 drives the cam divider 52. When the small metal parts are rotated to the picking station 462 with the central turntable 46, the vacuum adsorption component 54 descends and adsorbs the small metal parts under the action of the vacuum generating component 56. Then the vacuum adsorption component 54 rises and rotates again, thus repeating the cycle to separate the small metal parts from the central turntable 46 and transport them clockwise. When unloading qualified and unqualified small metal parts, the vacuum breaking component 57 causes the small metal parts to detach from the vacuum adsorption component 54 and fall into the OK hopper 82 and NG hopper 81 respectively.

[0054] It should be noted that the turret loading and unloading module 5 can use existing technology, as long as it can achieve the adsorption of small metal parts by each vacuum adsorption component 54 and the detachment of small metal parts by the vacuum breaking component 57. Specifically, its specific structure can be selected from Chinese utility model patents with authorization announcement number CN210258946U, entitled "A Rotary Vacuum Mechanism for a Diode Tape and Tape Machine", or Chinese utility model patents with authorization announcement number CN211969841U, entitled "A Multi-Station Rotary Flat Rotation Structure for a Turret Tape and Tape Machine", or Chinese utility model patents with authorization announcement number CN216189107U, entitled "A Turret Material Conveying Mechanism for a Fully Automatic Tape and Tape Machine", etc.

[0055] See Figure 8 , 9 As shown in Figures 10 and 11, the precision positioning module 6 includes a positioning bracket 61 fixedly connected to the worktable 12 by bolts, a connecting plate 62 horizontally fixedly connected to the positioning bracket 61 by bolts, a positioning disk 63 fixedly connected to the upper end face of the connecting plate 62 by bolts, two opposing positioning claws 64 slidably embedded in the positioning disk 63, and a positioning drive assembly for driving the positioning claws 64 to open and close.

[0056] Specifically, a through hole 631 is formed at the center of the positioning disk 63 along its axis, penetrating the positioning disk 63. Laterally and longitudinally, sliding grooves are formed on the upper surface of the positioning disk 63 outside the through hole 631. Four positioning claws 64 are slidably embedded in their corresponding sliding grooves in pairs. The positioning drive assembly can drive the four positioning claws 64 to open and close. That is, after the turret pick-and-place module 5 drives the small metal part to rotate to the precision positioning station 76 and moves downward under the action of the cam divider 52, the positioning drive assembly drives the four positioning claws 64 to close, thereby causing the positioning claws 64 to abut against the small metal part, thus performing secondary positioning of the small metal part. Afterwards, the positioning drive assembly drives the four positioning claws 64 to open to detach from the small metal part. To limit the positioning claws 64, a limit plate 65 is fixedly installed on the upper surface of the positioning disk 63 inside the four positioning claws 64.

[0057] In one embodiment, existing positioning drive components can be used, such as each positioning claw 64 being connected to the telescopic rod of the corresponding positioning cylinder, and the telescopic rod of the positioning cylinder driving the positioning claws 64 to move towards or away from each other when it extends or retracts.

[0058] In this embodiment, in order to improve the opening and closing speed of the positioning claw 64, the positioning drive assembly includes a positioning motor 66 vertically fixedly connected to the connecting plate 62, a rotating sleeve 67 fixedly sleeved on the output shaft of the positioning motor 66, a fixed shaft 671 evenly distributed and fixedly connected to the upper end face of the rotating sleeve 67, four positioning rollers 68 rotatably sleeved on the fixed shaft 671, and an annular groove 632 opened on the outer circumference of the positioning disk 63, and an annular spring 69 embedded in the annular groove 632.

[0059] The rotating sleeve 67, fixed shaft 671, and four positioning rollers 68 are rotatably inserted into the through hole 631 of the positioning disk. When the four positioning rollers 68 abut against the inner end face of the corresponding positioning claw 64, they can drive the positioning claw 64 to move away from each other (i.e., open action); when the four positioning rollers 68 disengage from the corresponding positioning claw 64, the annular spring 69 can cause the positioning claw 64 to move towards each other (i.e., close action). Thus, by rotating the output shaft of the positioning motor 66 in both directions, the positioning claw 64 can be opened and closed quickly. Furthermore, to facilitate the positioning rollers 68 from disengaging from the inner end face of the positioning claw 64 to abutting against the inner end face of the positioning claw 64, a notch 641 is provided on one side of the inner end face of each positioning claw 64, through which the positioning rollers 68 abut against the inner end face of the positioning claw 64.

[0060] See Figure 12 As shown, the first detection module 71 includes a first bracket 711 fixedly connected to the workbench 12 by bolts, a first detection camera 712 horizontally fixedly installed on the first bracket 711, and a backlight 713 disposed at a position opposite to the first detection camera 712. The backlight 713 is fixedly connected to the backlight bracket 714.

[0061] The second detection module 72 includes a second bracket 721 fixedly connected to the workbench 12 by bolts, a second detection camera 722 horizontally fixedly installed on the second bracket 721, an annular light source 723 disposed at a position opposite to the second detection camera 722, and a reflector 724 disposed inside the annular light source 723. The reflector 723 and the annular light source 724 are both fixedly connected to the annular light source bracket 725.

[0062] The first inspection camera 71 and the second inspection camera 72 are set at a certain angle according to the part of the small metal part to be inspected. In this embodiment, they can be set perpendicular to each other. After the turret pick-and-place module 5 drives the small metal part to rotate to the inspection station 73 and moves downward under the action of the cam divider 52, the small metal part to be inspected is positioned directly above the reflector 724 and between the first inspection camera 71 and the backlight 713. Then, the first inspection camera 71 detects the horizontal direction of the small metal part, and the second inspection camera 72 detects the vertical direction of the small metal part by receiving the image of the small metal part reflected by the reflector 724, thereby completing the inspection of indicators such as the bending angle, cut size and gold plating quality of the small metal part.

[0063] An NG hopper 81 is fixedly installed on the workbench 12 on one side of the detection module 7. When a small hardware part fails the inspection and moves above the NG hopper 81, the vacuum breaking component 57 separates the unqualified small hardware part from the vacuum adsorption component 54, causing it to fall into the NG hopper 81.

[0064] See Figure 1 As shown, a fixed position on the transfer path of the turret pick-and-place module 5 after the inspection of small hardware parts is set as the qualified product unloading station 74. In this embodiment, the qualified product unloading station 74 can be set on the workbench 12 opposite to the unqualified product unloading station 75, and the OK material bin 82 is set on the workbench 12 at the qualified product unloading station 74. When it is necessary to unload the qualified small hardware parts and the small hardware parts move above the OK material bin 82, the qualified small hardware parts are separated from the vacuum adsorption component 54 by the vacuum breaking component 57 and fall into the OK material bin 82.

[0065] The specific working principle and process of this embodiment are as follows: Based on the layout and process flow of the production workshop, select a suitable installation location, and assemble and debug the automated testing equipment for small hardware parts according to this instruction manual. Figure 1 , 2 As shown in Figure 3, small hardware parts have been placed in the replenishment bin 312 at this time.

[0066] Under the action of the vibrator 311, the feeding bin 312 feeds the small metal parts inside to the vibrating tray 33. Under the vibration of the vibration drive component 34, the small metal parts in the vibrating tray 33 are broken up and flipped so that the parallel robot arm 324 can drive the vacuum nozzle 326 to pick them up. The industrial camera 327 in the control box 323 takes pictures of the small metal parts in the vibrating tray 33 and transmits the image data to the robot controller. The robot controller plans the grasping path and actions of the parallel robot arm 324 according to the image information to achieve precise grasping and rotation. Parallel robotic arm 324 transfers small metal parts from vibrating tray 33 to contour slot 461 at picking station 462. After vacuum adsorption component 54 of turret pick-up module 5 picks up the small metal parts from contour slot 461 at picking station 462, cam divider 52 drives rotating frame 53 to rotate clockwise. At this time, rotary drive motor 45 drives turntable 46 to rotate one angle of contour slot 461. Spider-arm robot 32 transfers the next small metal part to contour slot 461 at picking station 462. After vacuum adsorption component 54 of turret pick-up module 5 picks up the new small metal part from contour slot 461 at picking station 462, cam divider 52 drives rotating frame 53 to rotate clockwise. By repeating the above process, continuous feeding and transfer of small metal parts can be achieved. When the small hardware parts are transferred to the precision positioning station 76 by the turret pick-and-place module 5, the positioning claw 64 of the precision positioning module 6 performs precision positioning on the small hardware parts. After that, the small hardware parts are transferred to the inspection station 73 by the turret pick-and-place module 5. The small hardware parts at this station are inspected by the first inspection module 71 and the second inspection module 72. The unqualified parts fall into the NG material bin 81, and the qualified parts are transferred to the qualified product unloading station 74 and fall into the OK material bin 82.

[0067] All technologies not described in this specification are existing technologies. The principles and processes of the controller 22 and its controlled display screen 22, flexible feeding module 3, transfer module 4, turret pick-and-place module 5, precision positioning module 6, and detection module 7 used in this utility model are existing technologies and will not be described in detail here. As long as they can meet the above working process, they are acceptable.

[0068] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automated inspection device for small hardware parts, comprising a workbench and a control module disposed on the workbench, characterized in that: It also includes, Flexible feeding module: set on the workbench, used for feeding and loading small hardware parts; Transfer module: includes a support frame set on the workbench, a rotary drive mechanism set on the support frame, and a transfer disk driven to rotate by the rotary drive mechanism, with a plurality of contoured grooves evenly distributed on the upper surface of the transfer disk; Turret loading and unloading module: used for vacuum adsorption, rotary transfer and vacuum breaking unloading of small hardware parts; Inspection module: includes a first inspection module and a second inspection module installed on the transfer path of the small hardware parts by the turret pick-and-place module, wherein the first inspection module and the second inspection module respectively inspect the small hardware parts in the horizontal and vertical directions; Material storage station: includes NG material storage and OK material storage, which are used to collect defective products and qualified products respectively after inspection; The flexible feeding module feeds small metal parts into the contouring groove, and the turret pick-and-place module discharges the small metal parts in the contouring groove into the NG and OK material bins respectively after they are detected by the detection module.

2. The automated testing equipment for small hardware parts according to claim 1, characterized in that: The support frame includes a base plate fixedly connected to the workbench, a support rod fixedly connected vertically to the base plate, and a top plate fixedly connected horizontally to the support rod; the rotary drive mechanism includes a reducer fixedly connected to the top plate and a rotary drive motor fixedly connected to the reducer, wherein the rotary drive motor drives the reducer to drive the turntable to rotate via the output shaft of the reducer.

3. The automated testing equipment for small hardware parts according to claim 2, characterized in that: A through hole is provided at the bottom of the contouring groove, penetrating the central turntable. A blowpipe is vertically fixedly inserted into the top plate, and the lower end of the blowpipe is connected to a blowpipe air source. A recovery pipe is provided on one side of the support frame, and a recovery box is connected to the lower end of the recovery pipe. When the contouring groove rotates to above the blowpipe, the blowpipe air source blows gas through the blowpipe towards the through hole of the central turntable. When small hardware parts are placed in the contouring groove, the small hardware parts are blown into the recovery pipe and collected by the recovery box.

4. The automated inspection equipment for small hardware parts according to claim 3, characterized in that: A mounting plate is fixedly connected to the top plate, and a photoelectric sensor is fixedly inserted into the mounting plate. The photoelectric sensor is used to detect whether there are small hardware parts in the contour groove located below it.

5. The automated inspection equipment for small hardware parts according to claim 1, characterized in that: The flexible feeding module includes a feeding bin on the workbench, a spider robot on one side of the feeding bin, a vibrating feed plate below the end of the spider robot, and a vibration drive component that can drive the vibrating feed plate to vibrate.

6. The automated inspection equipment for small hardware parts according to claim 1, characterized in that: The turret pick-and-place module between the transfer module and the detection module is also equipped with a precision positioning module on the transfer path of small hardware parts; the precision positioning module includes a positioning bracket fixedly connected to the workbench, a connecting plate horizontally fixedly connected to the positioning bracket, a positioning disk fixedly connected to the connecting plate, two opposing positioning claws slidably embedded on the positioning disk, and a positioning drive component for driving the opening and closing of the positioning claws.

7. The automated inspection equipment for small hardware parts according to claim 6, characterized in that: The positioning drive assembly includes a positioning motor vertically fixedly connected to the connecting plate, a rotating sleeve fixedly sleeved on the output shaft of the positioning motor, four positioning rollers evenly distributed on the upper end face of the rotating sleeve, and an annular spring embedded in the outer circumference of the positioning disk; when the four positioning rollers abut against the corresponding positioning claws, they can drive the positioning claws to move away from each other; when the four positioning rollers disengage from the corresponding positioning claws, the annular springs can cause the positioning claws to move towards each other.

8. The automated testing equipment for small hardware parts according to claim 1, characterized in that: The first detection module includes a first bracket fixedly connected to the workbench, a first detection camera horizontally arranged on the first bracket, and a backlight arranged at a position opposite to the first detection camera. The backlight is fixedly connected to the backlight bracket. The second detection module includes a second bracket fixedly connected to the workbench, a second detection camera horizontally arranged on the second bracket, an annular light source arranged at a position opposite to the second detection camera, and a reflector arranged inside the annular light source. The reflector and the annular light source are both fixedly connected to the annular light source bracket. The first detection camera and the second detection camera are set at a certain angle according to the part of the hardware component to be detected. The first detection camera detects the horizontal direction of the hardware component, and the second detection camera detects the vertical direction of the hardware component by receiving the image of the hardware component reflected by the reflector.

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