A leakage detection device for welded nuts
The welded nut leak detection device, which uses a PLC controller and multiple sensors for collaborative detection, solves the problem of insufficient accuracy and consistency of manual inspection, realizes automated and precise welded nut detection and sorting process, and improves the efficiency and quality management capabilities of the production line.
Patent Information
- Application Number
- CN202522591570.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-05
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-05
AI Technical Summary
The current method of leak detection for welded nuts mainly relies on manual inspection, which lacks accuracy and consistency, makes it difficult to achieve comprehensive coverage, and cannot provide real-time data feedback, thus affecting the overall efficiency and quality of the production line.
The welding nut leak detection device, which uses a PLC controller and multi-sensor collaborative detection, integrates pressure sensors, cameras and infrared sensors to achieve multi-dimensional monitoring and accurate detection through automated material handling, detection and sorting processes.
It significantly improves detection efficiency and accuracy, avoids missed detections and misjudgments, reduces labor intensity and production costs, and supports continuous optimization of quality management.
Smart Images
Figure CN224934167U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of detection device technology, specifically a leak-proof detection device for welded nuts. Background Technology
[0002] In the automotive manufacturing industry, welding nuts is a key process, widely used for fixing and connecting body structures, chassis components and other parts. Welding nuts are required for automotive parts during production, mainly to ensure reliable assembly of components and stability of the overall structure. Currently, the main method for leak detection of welded nuts is the traditional manual inspection method. Operators check the welding condition of nuts on each workpiece by visual inspection or simple tools. Although this method is low in cost, it has obvious shortcomings: the accuracy and consistency of manual inspection are limited by the operator's skills, experience and working condition. Long-term repetitive labor can easily lead to fatigue, increasing the probability of missed detection and misjudgment. It is difficult to achieve comprehensive coverage and cannot provide real-time data feedback, which affects the overall efficiency of the production line. Therefore, a leak detection device for welded nuts is proposed. Utility Model Content
[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a welding nut leak prevention detection device that can significantly improve detection efficiency and accuracy through an integrated process of automated material handling, multi-sensor collaborative detection and intelligent sorting, and can effectively solve the problems in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a leak-proof detection device for welded nuts, comprising a mounting platform and a moving component; Mounting platform: A PLC controller is mounted on the upper side. A storage box is fixed to the right end of the upper side of the mounting platform. A feeding component is mounted on the rear side of the storage box. A detection component is mounted on the upper end of the feeding component. A discharging component is mounted in the middle of the upper side of the mounting platform. The detection component and the discharging component correspond to each other. The moving component includes a bracket, a connecting frame, a fixing plate, a toothed plate, a moving frame, a first motor, a gear, a pressure sensor, and a first electric telescopic rod. A bracket is fixed to the right side of the storage box, and a connecting frame is located at the rear of the bracket. Two corresponding fixing plates are fixed to the front and rear sides of the connecting frame, with the front fixing plate fixed to the rear of the bracket. A toothed plate is fixed inside the connecting frame, and a moving frame is slidably connected to the side of the connecting frame. A first motor is mounted on the right side of the moving frame, and a gear is fixed to the output shaft of the first motor. The gear is rotatably connected inside the connecting frame and meshes with the toothed plate. Two corresponding pressure sensors are mounted on the front and rear sides of the moving frame, with the rear pressure sensor abutting the rear fixing plate. A first electric telescopic rod is mounted on the upper side of the moving frame, and a material-picking component is connected to the lower end of the telescopic arm of the first electric telescopic rod. Through the gear and rack transmission of the moving component and the feedback from the pressure sensors, precise movement and positioning of the material-picking component are achieved. Combined with centralized control by a PLC controller, the material picking, inspection, and sorting process of welding nuts is automated, improving inspection efficiency and reliability and avoiding manual omissions. Wherein: the input terminal of the PLC controller is electrically connected to the output terminal of an external power supply; the input terminals of the first motor and the first electric telescopic rod are both electrically connected to the output terminal of the PLC controller; and the pressure sensor is bidirectionally electrically connected to the PLC controller.
[0005] Furthermore, the material handling assembly includes a T-shaped mounting plate, a vacuum pump, a vacuum pipe, a mounting bucket, a suction cup, an air inlet pipe, and a solenoid valve. The telescopic arm of the first electric telescopic rod is fixed to the upper side of the T-shaped mounting plate. A vacuum pump is installed on the upper side of the T-shaped mounting plate, and a vacuum pipe is fixed inside the vacuum pump's suction port. A mounting hole is opened at the front of the upper side of the T-shaped mounting plate, and a mounting bucket is fixed inside the mounting hole. A suction cup is installed inside the mounting bucket. The front end of the vacuum pipe is fixed inside the vacuum hole set at the upper end of the suction cup. An air inlet is opened on the circumferential surface of the vacuum pipe, and an air inlet pipe is fixed inside the air inlet. A solenoid valve is installed on the circumferential surface of the air inlet pipe. The input ends of the solenoid valve and the vacuum pump are electrically connected to the output end of the PLC controller. The material handling assembly generates negative pressure through the vacuum pump and uses the suction cup to adsorb the workpiece that has been welded with nuts. The solenoid valve controls the airflow of the air inlet pipe to achieve reliable nut picking and releasing, ensuring stable transmission during movement and inspection, and reducing workpiece damage.
[0006] Furthermore, the feeding assembly includes a guide plate, a limiting frame, a moving bar, a threaded rod, a limiting rod, a second motor, and a discharge hole. A guide plate is fixed to the rear end of the right side of the storage box. A limiting frame is fixed to the upper side of the guide plate. Two corresponding grooves are formed on the upper side of the limiting frame, and a moving bar is installed inside each groove. A threaded hole is formed on the front side of the moving bar, and a threaded rod is threadedly connected inside the threaded hole. The threaded rod is rotatably connected inside the front groove. A limiting hole is formed on the rear side of the moving bar, and a limiting rod is slidably connected inside the limiting hole. The limiting rod is fixed inside the rear groove. A second motor is installed on the right side of the limiting frame, and the output shaft of the second motor is fixed to the right end of the threaded rod. A discharge hole is formed on the left side of the guide plate. The input end of the second motor is electrically connected to the output end of the PLC controller. The feeding assembly drives the threaded rod to move the moving bar via the second motor, realizing the step-by-step conveying of the workpiece to be tested.
[0007] Furthermore, the detection component includes a mounting frame, a camera, a proximity switch, an infrared transmitter, and an infrared receiver. The mounting frame is fixed to the front and rear sides of the guide plate. The camera and proximity switch are mounted on the upper side inside the mounting frame. Two corresponding through holes are opened on both sides inside the limiting frame. An infrared transmitter is installed inside the rear through hole, and an infrared receiver is installed inside the front through hole. The infrared transmitter and receiver cooperate with each other and correspond to the mounting frame. The camera, proximity switch, and infrared receiver are bidirectionally electrically connected to the PLC controller. The input terminal of the infrared transmitter is electrically connected to the output terminal of the PLC controller. The detection component integrates multiple sensors: the infrared transmitter and receiver determine the workpiece position; the proximity switch detects the presence of a nut; and the camera provides visual assistance, enabling multi-dimensional monitoring and improving the accuracy and adaptability of weld defect detection.
[0008] Furthermore, the unloading assembly includes a second electric telescopic rod, a mounting frame, a rotating block, a support plate, and a third motor. The second electric telescopic rod is mounted on the middle of the upper side of the mounting platform. The mounting frame is fixed to the telescopic arm of the second electric telescopic rod. The rotating block is rotatably connected inside the mounting frame. The support plate is fixed to the upper side of the rotating block. An opening is opened on the upper side of the guide plate, located at the left end of the unloading hole. The support plate is located inside the opening and corresponds to the mounting frame. The third motor is mounted on the right side of the mounting frame. The output shaft of the third motor is fixed to the right side of the rotating block. The input ends of the third motor and the second electric telescopic rod are both electrically connected to the output end of the PLC controller. The unloading assembly controls the lifting and rotation of the support plate through the second electric telescopic rod and the third motor. According to the detection results, qualified and unqualified workpieces are sorted. The guide channel guides the flow of workpieces, realizing automated classification and collection.
[0009] Furthermore, the storage box is provided with a storage slot inside, and a strip-shaped opening is provided on the right side of the storage slot. The strip-shaped opening cooperates with the T-shaped mounting plate. The storage box is used to store workpieces that have been welded with nuts. When the pressure sensor on the front side of the connecting frame contacts the fixing plate on the front side, the T-shaped mounting plate of the material picking component will correspond to the strip-shaped opening. After the correspondence, the material picking component can easily pick up the workpiece.
[0010] Furthermore, a flow guide channel is provided on the rear side of the mounting platform, and a storage frame is fixed on the rear side of the mounting platform. The flow guide channel and the storage frame correspond to each other, and the flow guide channel and the support plate correspond to each other. The cooperation between the flow guide channel and the storage frame ensures that unqualified workpieces slide down and are collected in an orderly manner after sorting, preventing workpieces from scattering, keeping the work area clean, and improving safety and sustainability.
[0011] Furthermore, a support frame is fixed to the left end of the upper side of the mounting platform, and a belt conveyor is installed inside the support frame. The belt conveyor corresponds to the discharge hole. The support frame and the belt conveyor provide a discharge conveying channel, which connects with the discharge hole to realize the automated output of qualified workpieces after inspection, which facilitates subsequent processing or packaging and enhances the continuity of the production line.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This welding nut leak-proof detection device has the following advantages: 1. By integrating a PLC controller and mobile components for automated collaborative control, the entire process from material handling to sorting is automated, significantly improving inspection efficiency. Real-time feedback from pressure sensors ensures accurate material handling positioning, effectively preventing missed inspections due to human fatigue or operational errors, while also reducing labor intensity and production costs. The device's compact structure makes it suitable for continuous production lines, seamlessly integrating into existing manufacturing processes and enhancing production rhythm stability.
[0013] 2. The detection component integrates multiple detection methods such as proximity switches, cameras, and infrared sensors to form a multi-dimensional monitoring network, which can effectively improve the accuracy of identifying missing welds in welded nuts. It exhibits stronger reliability, especially in complex or hidden welding positions, reduces the risk of misjudgment, and provides a basis for data traceability, supporting continuous optimization of quality management. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the front structure of this utility model; Figure 2 This is an enlarged view of section A of this utility model; Figure 3 This is an enlarged view of section B of the present invention; Figure 4This is a schematic diagram of the rear structure of this utility model; Figure 5 This is a schematic diagram of the material feeding assembly structure of this utility model.
[0015] In the diagram: 1. Mounting platform; 2. Detection component; 21. Mounting frame; 22. Camera; 23. Proximity switch; 24. Infrared transmitter; 25. Infrared receiver; 3. PLC controller; 4. Storage box; 5. Moving component; 51. Bracket; 52. Connecting frame; 53. Fixing plate; 54. Gear plate; 55. Moving frame; 56. First motor; 57. Gear; 58. Pressure sensor; 59. First electric telescopic rod; 6. Material handling component; 61. T-shaped mounting plate, 62 air pump, 63 air extraction pipe, 64 mounting bucket, 65 suction cup, 66 air inlet pipe, 67 solenoid valve, 7 feeding assembly, 71 guide plate, 72 limit frame, 73 moving bar, 74 threaded rod, 75 limit rod, 76 second motor, 77 discharge hole, 8 discharge assembly, 81 second electric telescopic rod, 82 mounting frame, 83 rotating block, 84 support plate, 85 third motor, 9 storage tank, 10 strip opening, 11 guide channel, 12 storage frame, 13 support frame, 14 belt conveyor. Detailed Implementation
[0016] 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, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0017] Please see Figure 1-5 This embodiment provides a technical solution: a welding nut leak prevention detection device, including a mounting platform 1 and a moving component 5; Mounting platform 1: A PLC controller 3 is mounted on the upper side. A storage box 4 is fixed to the right end of the upper side of mounting platform 1. A feeding assembly 7 is mounted on the rear side of storage box 4. A detection assembly 2 is mounted on the upper end of the feeding assembly 7. A discharge assembly 8 is mounted in the middle of the upper side of mounting platform 1. The detection assembly 2 and the discharge assembly 8 correspond to each other. The feeding assembly 7 includes a guide plate 71, a limit frame 72, a moving bar 73, a threaded rod 74, a limit rod 75, a second motor 76, and a discharge hole 77. A guide plate 71 is fixed to the rear end of the right end of storage box 4. A limit frame 72 is fixed to the upper side of the guide plate 71. Two corresponding grooves are opened on the upper side of the limit frame 72. Moving bars 73 are set inside the two grooves. Threaded holes are opened on the front side of the moving bars 73. The internal threads of the threaded holes are... A threaded rod 74 is connected, and the rotation of the threaded rod 74 is connected inside the groove on the front side. A limit hole is opened on the rear side of the moving bar 73, and a limit rod 75 is slidably connected inside the limit hole. The limit rod 75 is fixed inside the groove on the rear side. A second motor 76 is installed on the right side of the limit frame 72, and the output shaft of the second motor 76 is fixed to the right end of the threaded rod 74. A feeding hole 77 is opened on the left side of the guide plate 71. The input end of the second motor 76 is electrically connected to the output end of the PLC controller 3. The detection component 2 includes a mounting frame 21, a camera 22, a proximity switch 23, an infrared transmitter 24, and an infrared receiver 25. The mounting frame 21 is fixed on the front and rear sides of the guide plate 71. The camera 22 and the receiver 25 are installed on the upper side inside the mounting frame 21. The proximity switch 23 and the limit bracket 72 have two corresponding through holes on both sides. An infrared transmitter 24 is installed inside the rear through hole, and an infrared receiver 25 is installed inside the front through hole. The infrared transmitter 24 and infrared receiver 25 cooperate with each other and correspond to the mounting frame 21. The camera 22, proximity switch 23, and infrared receiver 25 are bidirectionally electrically connected to the PLC controller 3. The input terminal of the infrared transmitter 24 is electrically connected to the output terminal of the PLC controller 3. The unloading assembly 8 includes a second electric telescopic rod 81, a mounting bracket 82, a rotating block 83, a support plate 84, and a third motor 85. The second electric telescopic rod 81 is installed in the middle of the upper side of the mounting platform 1. A mounting bracket 82 is fixed to the telescopic arm of the telescopic rod 81. A rotating block 83 is rotatably connected inside the mounting bracket 82. A support plate 84 is fixed to the upper side of the rotating block 83. An opening is opened on the upper side of the guide plate 71, located at the left end of the unloading hole 77. The support plate 84 is located inside the opening and corresponds to the mounting frame 21. A third motor 85 is mounted on the right side of the mounting bracket 82. The output shaft of the third motor 85 is fixed to the right side of the rotating block 83. The input ends of the third motor 85 and the second electric telescopic rod 81 are both electrically connected to the output end of the PLC controller 3. The unloading assembly 8 controls the lifting and rotation of the support plate 84 through the second electric telescopic rod 81 and the third motor 85. According to the test results, qualified and unqualified workpieces are sorted. The guide channel 11 guides the flow of workpieces.To achieve automated sorting and collection, the detection component 2 integrates multiple sensors: an infrared transmitter 24 and an infrared receiver 25 determine the workpiece position; a proximity switch 23 detects the presence of nuts; and a camera 22 provides visual assistance, enabling multi-dimensional monitoring and improving the accuracy and adaptability of incomplete weld detection. The feeding component 7, driven by a second motor 76, moves the threaded rod 74, which in turn moves the moving bar 73, achieving step-by-step conveying of the workpiece to be tested. Mobile component 5 includes a bracket 51, a connecting frame 52, a fixing plate 53, a toothed plate 54, a moving frame 55, a first motor 56, a gear 57, a pressure sensor 58, and a first electric telescopic rod 59. The bracket 51 is fixed to the right side of the storage box 4. The connecting frame 52 is located at the rear of the bracket 51. Two corresponding fixing plates 53 are fixed to the front and rear sides of the connecting frame 52, with the front fixing plate 53 fixed to the rear of the bracket 51. A toothed plate 54 is fixed inside the connecting frame 52. The moving frame 55 is slidably connected to the side of the connecting frame 52. The first motor 56 is mounted on the right side of the moving frame 55. A gear 57 is fixed on the output shaft of motor 56. Gear 57 is rotatably connected inside the connecting frame 52 and meshes with gear plate 54. Two corresponding pressure sensors 58 are installed on the front and rear sides of the moving frame 55. The pressure sensor 58 on the rear side is in contact with the fixed plate 53 on the rear side. A first electric telescopic rod 59 is installed on the upper side of the moving frame 55. The lower end of the telescopic arm of the first electric telescopic rod 59 is connected to a material picking assembly 6. The material picking assembly 6 includes a T-shaped mounting plate 61, a vacuum pump 62, a vacuum pipe 63, a mounting bucket 64, a suction cup 65, an air inlet pipe 66, and a solenoid valve 67. The telescopic arm of the retractable rod 59 is fixed to the upper side of the T-shaped mounting plate 61. An air pump 62 is mounted on the upper side of the T-shaped mounting plate 61. An air suction pipe 63 is fixed inside the air suction port of the air pump 62. A mounting hole is provided at the front of the upper side of the T-shaped mounting plate 61, and a mounting barrel 64 is fixed inside the mounting hole. A suction cup 65 is installed inside the mounting barrel 64. The front end of the air suction pipe 63 is fixed inside the air suction hole at the upper end of the suction cup 65. An air inlet is provided on the circumference of the air suction pipe 63, and an air inlet pipe 66 is fixed inside the air inlet. A solenoid valve 67 is mounted on the circumference of the air inlet pipe 66. The solenoid valve 67 and the air pump 62... The input terminals are all electrically connected to the output terminals of the PLC controller 3. The material handling component 6 generates negative pressure through the vacuum pump 62 and uses the suction cup 65 to pick up the workpieces that have been welded with nuts. The solenoid valve 67 controls the airflow of the air inlet pipe 66 to achieve reliable picking up and releasing of nuts, ensuring stable transmission during movement and inspection, and reducing workpiece damage. Through the gear and rack transmission of the moving component 5 and the feedback of the pressure sensor 58, the material handling component 6 can be accurately moved and positioned. With the centralized control of the PLC controller 3, the picking, inspection and sorting process of welded nuts is automatically completed, improving inspection efficiency and reliability and avoiding manual omissions. Wherein: the input terminal of PLC controller 3 is electrically connected to the output terminal of external power supply, the input terminals of the first motor 56 and the first electric telescopic rod 59 are both electrically connected to the output terminal of PLC controller 3, and the pressure sensor 58 is bidirectionally electrically connected to PLC controller 3.
[0018] The storage box 4 has a storage slot 9 inside, and a strip opening 10 is opened on the right side inside the storage slot 9. The strip opening 10 cooperates with the T-shaped mounting plate 61. The storage box 4 is used to store workpieces that have been welded with nuts. When the pressure sensor 58 on the front side of the connecting frame 52 contacts the fixing plate 53 on the front side, the T-shaped mounting plate 61 of the material picking component 6 will correspond to the strip opening 10. After the correspondence, the material picking component 6 can easily pick up the workpiece.
[0019] Wherein: a guide channel 11 is provided on the rear side of the mounting platform 1, and a storage frame 12 is fixed on the rear side of the mounting platform 1. The guide channel 11 and the storage frame 12 correspond to each other, and the guide channel 11 and the support plate 84 correspond to each other. The cooperation between the guide channel 11 and the storage frame 12 ensures that unqualified workpieces slide down and are collected in an orderly manner after sorting, prevents workpieces from scattering, keeps the work area clean, and improves safety and sustainability.
[0020] Among them: a support frame 13 is fixed on the left side of the upper side of the mounting platform 1. A belt conveyor 14 is installed inside the support frame 13. The belt conveyor 14 corresponds to the discharge hole 77. The support frame 13 and the belt conveyor 14 provide a discharge conveying channel and connect with the discharge hole 77 to realize the automated output of qualified workpieces after inspection, which facilitates subsequent processing or packaging and enhances the continuity of the production line.
[0021] The working principle of the welding nut leak detection device provided by this utility model is as follows: First, the workpiece with the welded nut is placed into the storage box 4. Then, the moving component 5 starts to work. The first motor 56 drives the gear 57 to precisely mesh and rotate on the toothed plate 54 fixed inside the connecting frame 52, thereby driving the moving frame 55 to slide along the side of the connecting frame 52. The pressure sensors 58 installed on the front and rear sides of the moving frame 55 monitor the position in real time. When the rear pressure sensor 58 is in contact with the rear fixed plate 53, the signal is fed back to the PLC controller 3 to confirm that the material picking component 6 has moved to directly above the strip opening 10 of the storage box 4. Subsequently, the first electric telescopic rod The telescopic arm 59 moves downward, causing the T-shaped mounting plate 61 at its lower end and the entire material-grabbing assembly 6 to descend, so that the suction cup 65 contacts the workpiece surface. At this time, the air pump 62 starts, generating negative pressure in the air extraction pipe 63 and the mounting barrel 64. The suction cup 65 firmly adsorbs the welded nut workpiece in the storage tank 9. The solenoid valve 67 controls the airflow in the air inlet pipe 66 to maintain the adsorption stability. After the gripping is completed, the first electric telescopic arm 59 returns to its original position, and the first motor 56 of the moving assembly 5 starts again, smoothly moving the material-grabbing assembly 6 carrying the workpiece to the starting position on the right end of the feeding assembly 7. The negative pressure in the suction cup 65 is released, and the workpiece is placed on the guide plate 71, and then the feeding assembly... The second motor 76 of component 7 starts, driving the threaded rod 74 to rotate. The moving bar 73, threadedly connected to the threaded rod 74, pushes the workpiece on the guide plate 71 forward in a step-by-step manner under the guidance of the limit rod 75. When the workpiece is pushed directly below the detection component 2, the detection program is triggered. The beam emitted by the infrared emitter 24 installed in the through holes on both sides of the limit frame 72 is blocked by the workpiece, causing a change in the signal of the infrared receiver 25 on the opposite side. This signal is captured by the PLC controller 3, confirming that the workpiece has accurately reached the detection station. Subsequently, the proximity switch 23 inside the mounting frame 21 senses the predetermined welding point on the workpiece at close range to detect whether the nut is present. Simultaneously, the camera 22 on the upper side of the mounting frame 21 is activated to acquire images of the workpiece and transmit the visual data to the PLC controller 3 for comprehensive analysis. Finally, sorting is performed based on the detection results. The PLC controller 3 issues an instruction to the feeding assembly 8. If the workpiece is qualified, the moving bar 73 guides the qualified workpiece to the feeding hole 77, so that it falls onto the belt conveyor 14 below for automatic output. If the workpiece is detected as unqualified, the second electric telescopic rod 81 retracts to control the support plate 84 to descend, and then the third motor 85 drives the support plate 84 to tilt, so that the unqualified workpiece slides into the guide trough 11 on the rear side of the mounting platform 1 and finally falls into the storage frame 12 for collection.
[0022] It is worth noting that the PLC controller 3 disclosed in the above embodiments is specifically a Siemens S7-200. The first motor 56, the second motor 76, the third motor 76, the first electric telescopic rod 59, the second electric telescopic rod 82, the air pump 62, the solenoid valve 67, the infrared transmitter 24, the infrared receiver 25, the pressure sensor 58, the camera 22, and the proximity switch 23 can be freely counterweighted according to actual conditions. The PLC controller 3 controls the operation of the first motor 56, the second motor 76, the third motor 76, the first electric telescopic rod 59, the second electric telescopic rod 82, the air pump 62, the solenoid valve 67, the infrared transmitter 24, the infrared receiver 25, the pressure sensor 58, the camera 22, and the proximity switch 23 using methods commonly used in the prior art.
[0023] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A leak-proof detection device for welded nuts, characterized in that: Includes a mounting platform (1) and a moving component (5); Mounting platform (1): A PLC controller (3) is mounted on the upper side. A storage box (4) is fixed on the right side of the upper side of the mounting platform (1). A feeding assembly (7) is mounted on the rear side of the storage box (4). A detection assembly (2) is mounted on the upper end of the feeding assembly (7). A feeding assembly (8) is mounted on the middle of the upper side of the mounting platform (1). The detection assembly (2) and the feeding assembly (8) correspond to each other. The moving component (5) includes a bracket (51), a connecting frame (52), a fixing plate (53), a toothed plate (54), a moving frame (55), a first motor (56), a gear (57), a pressure sensor (58), and a first electric telescopic rod (59). The right side of the storage box (4) is fixed with the bracket (51), and the rear side of the bracket (51) is provided with the connecting frame (52). Two corresponding fixing plates (53) are fixed on the front and rear sides of the connecting frame (52). The front fixing plate (53) is fixed to the rear side of the bracket (51). The toothed plate (54) is fixed inside the connecting frame (52). The side of the connecting frame (52) is slidably connected. A movable frame (55) is connected, and a first motor (56) is installed on the right side of the movable frame (55). A gear (57) is fixed on the output shaft of the first motor (56). The gear (57) is rotatably connected inside the connecting frame (52). The gear (57) meshes with the toothed plate (54). Two corresponding pressure sensors (58) are installed on the front and rear sides of the movable frame (55). The pressure sensor (58) on the rear side is in contact with the fixed plate (53) on the rear side. A first electric telescopic rod (59) is installed on the upper side of the movable frame (55). The lower end of the telescopic arm of the first electric telescopic rod (59) is connected to a material picking component (6). Wherein: the input terminal of the PLC controller (3) is electrically connected to the output terminal of the external power supply, the input terminals of the first motor (56) and the first electric telescopic rod (59) are both electrically connected to the output terminal of the PLC controller (3), and the pressure sensor (58) is bidirectionally electrically connected to the PLC controller (3).
2. The welding nut leak-proof detection device according to claim 1, characterized in that: The material handling assembly (6) includes a T-shaped mounting plate (61), a vacuum pump (62), a vacuum pipe (63), a mounting bucket (64), a suction cup (65), an air inlet pipe (66), and a solenoid valve (67). The telescopic arm of the first electric telescopic rod (59) is fixed to the upper side of the T-shaped mounting plate (61). The vacuum pump (62) is mounted on the upper side of the T-shaped mounting plate (61), and a vacuum pipe (63) is fixed inside the suction port of the vacuum pump (62). The front section of the upper side of the mounting plate (61) has a mounting hole, and a mounting barrel (64) is fixed inside the mounting hole. A suction cup (65) is installed inside the mounting barrel (64). The front end of the suction pipe (63) is fixed inside the suction hole set at the upper end of the suction cup (65). An air inlet is opened on the circumferential surface of the suction pipe (63). An air inlet pipe (66) is fixed inside the air inlet. A solenoid valve (67) is installed on the circumferential surface of the air inlet pipe (66). The input ends of the solenoid valve (67) and the suction pump (62) are electrically connected to the output end of the PLC controller (3).
3. The leak-proof detection device for welded nuts according to claim 1, characterized in that: The feeding assembly (7) includes a guide plate (71), a limiting frame (72), a moving bar (73), a threaded rod (74), a limiting rod (75), a second motor (76), and a discharge hole (77). The guide plate (71) is fixed to the rear end of the right end of the storage box (4). The limiting frame (72) is fixed to the upper side of the guide plate (71). Two corresponding grooves are opened on the upper side of the limiting frame (72). The moving bar (73) is arranged inside the two grooves. The front side of the moving bar (73) is provided with a threaded hole. The threaded hole is threaded with a threaded connection. A threaded rod (74) is rotatably connected to the inside of the groove on the front side. A limit hole is opened on the rear side of the moving bar (73). A limit rod (75) is slidably connected inside the limit hole. The limit rod (75) is fixed inside the groove on the rear side. A second motor (76) is installed on the right side of the limit frame (72). The output shaft of the second motor (76) is fixed to the right end of the threaded rod (74). A feeding hole (77) is opened on the left side of the guide plate (71). The input end of the second motor (76) is electrically connected to the output end of the PLC controller (3).
4. The welding nut leak-proof detection device according to claim 3, characterized in that: The detection component (2) includes a mounting frame (21), a camera (22), a proximity switch (23), an infrared transmitter (24), and an infrared receiver (25). The mounting frame (21) is fixed on the front and rear sides of the guide plate (71). The camera (22) and the proximity switch (23) are installed on the upper side inside the mounting frame (21). Two corresponding through holes are opened on both sides inside the limit frame (72). The infrared transmitter (24) is installed inside the through hole on the rear side, and the infrared receiver (25) is installed inside the through hole on the front side. The infrared transmitter (24) and the infrared receiver (25) cooperate with each other. The infrared transmitter (24) and the infrared receiver (25) correspond to the mounting frame (21). The camera (22), the proximity switch (23), and the infrared receiver (25) are bidirectionally electrically connected to the PLC controller (3). The input end of the infrared transmitter (24) is electrically connected to the output end of the PLC controller (3).
5. The welding nut leak-proof detection device according to claim 4, characterized in that: The feeding assembly (8) includes a second electric telescopic rod (81), a mounting frame (82), a rotating block (83), a support plate (84), and a third motor (85). The second electric telescopic rod (81) is installed in the middle of the upper side of the mounting platform (1). The mounting frame (82) is fixed on the telescopic arm of the second electric telescopic rod (81). The rotating block (83) is rotatably connected inside the mounting frame (82). The support plate (84) is fixed on the upper side of the rotating block (83). An opening is opened on the upper side of the guide plate (71). The opening is located at the left end of the feeding hole (77). The support plate (84) is located inside the opening. The support plate (84) corresponds to the mounting frame (21). The third motor (85) is installed on the right side of the mounting frame (82). The output shaft of the third motor (85) is fixed on the right side of the rotating block (83). The input ends of the third motor (85) and the second electric telescopic rod (81) are both electrically connected to the output end of the PLC controller (3).
6. The welding nut leak-proof detection device according to claim 2, characterized in that: The storage box (4) is provided with a storage slot (9) inside. A strip opening (10) is provided on the right side of the storage slot (9). The strip opening (10) cooperates with the T-shaped mounting plate (61).
7. The leak-proof detection device for welded nuts according to claim 5, characterized in that: The mounting platform (1) has a flow guide groove (11) on its rear side, and a storage frame (12) is fixed on the rear side of the mounting platform (1). The flow guide groove (11) and the storage frame (12) correspond to each other, and the flow guide groove (11) and the support plate (84) correspond to each other.
8. The welding nut leak-proof detection device according to claim 3, characterized in that: A support frame (13) is fixed on the left side of the upper side of the mounting platform (1). A belt conveyor (14) is installed inside the support frame (13). The belt conveyor (14) corresponds to the discharge hole (77).