Automatic riveting device for aluminum ball production

Abstract

The utility model relates to welding nail processing equipment technical field discloses a kind of automatic riveting aluminium ball devices of welding nail production, including rack, carousel, punch riveting module, linear jacking device, rotary drive device, pushing mechanism, fixed apron and detector, and pushing mechanism includes horizontal linear push rod, push plate, movable apron. Whether riveting ball of welding nail is qualified by detector, pushing mechanism executes different actions according to detection result: when the riveting ball of qualified welding nail reaches discharging gap, horizontal linear push rod drives push plate and movable apron, and welding nail is pushed out carousel and enters discharging track;Unqualified welding nail is detected, and horizontal linear push rod does not act, so that it continues to stay in carousel, and re-experiences complete riveting ball process, until discharging after being qualified, improve the degree of automation, reduce manual intervention, avoid unqualified product to flow out, reduce cost and ensure product quality.

Description

Technical Field

[0001] This utility model relates to the technical field of welding stud processing equipment, and in particular to an automatic aluminum ball riveting device for welding stud production. Background Technology

[0002] In the production of welding studs, aluminum balls are often riveted to the small end of the stud. Currently, several automatic riveting machine solutions exist on the market, such as the patent with publication number CN110814752B, which discloses a fully automatic riveting machine. This machine uses a finished product inspection mold to inspect the welding studs. When it detects that a welding stud to be inspected is not riveted with an aluminum ball, the controller sends a control command to the actuator, causing the riveting machine to stop working. At this point, the operator needs to manually remove the welding stud without the aluminum ball, troubleshoot and resolve the related faults, and then restart the riveting machine to resume production. Although this technical solution can detect the condition of weld studs and rivets, it has many shortcomings in practical applications: Firstly, the method of stopping the equipment to deal with the unriveted ball welded nails greatly disrupts the production process. Every stop means that the production rhythm is disrupted, which not only reduces the output per unit time, but also causes additional wear and tear on various parts of the equipment due to frequent start-ups and shutdowns, thus shortening the service life of the equipment. Secondly, relying on manual removal of defective weld studs significantly increases labor costs. Enterprises need to invest in dedicated personnel for real-time monitoring and processing. Moreover, the efficiency of manual operation is limited and it is difficult to meet the needs of large-scale, continuous production. At the same time, there is also the risk that defective products may flow into the next process due to human negligence. Third, the entire testing and processing process has a low degree of automation, which cannot match the high efficiency and precision requirements of modern intelligent manufacturing, thus limiting the improvement of enterprise production efficiency and the optimization of production costs. Utility Model Content

[0003] Based on this, it is necessary to provide an automatic aluminum ball riveting device for welding stud production to address the aforementioned technical problems, thereby solving the issues of unsmooth material discharge, inconvenient inspection, and low degree of automation in feeding mentioned in the background art. At the same time, it can overcome the drawbacks of high cost and low efficiency caused by equipment downtime and manual intervention in the existing technology.

[0004] To achieve the above objectives, this utility model provides an automatic aluminum ball riveting device for welding stud production, comprising a frame, a turntable, a riveting module, a linear lifting device, a rotary drive device, a feeding mechanism, a fixed guard plate, and a detector. The linear lifting device and the rotary drive device are fixedly connected to the frame. The riveting module includes a lifting seat, a punching die, a ball-feeding initial riveting die, and a forming and re-riveting die. The lifting seat is driven to move linearly by the linear lifting device, and the punching die, the ball-feeding initial riveting die, and the forming and re-riveting die are sequentially installed on the lifting seat. The turntable is driven to rotate by the rotary drive device, and the edge of the turntable has several evenly distributed notches.

[0005] A fixed guard plate is located around the turntable and has a discharge gap and a loading gap. The pushing mechanism includes a horizontal linear push rod, a push plate, and a movable guard plate. The horizontal linear push rod is fixedly connected to the frame, and a push plate is installed at the output end of the horizontal linear push rod. The push plate is fixedly connected to the movable guard plate, which can be driven by the horizontal linear push rod to move closer to or away from the discharge gap. A detector is used to detect whether aluminum balls are riveted to the bottom of the welding stud. The fixed guard plate serves as a protective and limiting element, ensuring that the welding studs on the turntable do not detach from the track during processing, thus guaranteeing processing safety and stability. The discharge and loading gaps provide channels for the entry and exit of welding studs, ensuring orderly flow. The pushing mechanism, driven by a horizontal linear push rod, pushes the push plate and movable guard plate, accurately and efficiently pushing the finished welding studs out of the turntable's notch and into the discharge track through the discharge gap. This achieves automatic welding stud discharge, avoiding the inefficiency and instability of manual discharge, preventing welding stud accumulation on the turntable, and ensuring a smooth production process. The detector can automatically detect in real time whether aluminum balls are riveted to the bottom of the welding studs. Compared to existing technologies that require equipment shutdown for inspection, this method does not interrupt the production process, can promptly detect defective products, improves inspection efficiency and production continuity, and reduces capacity loss and equipment wear caused by downtime. Furthermore, the rotary drive device drives the turntable to rotate intermittently, so that the notch passes sequentially through the punching die, the ball feeding initial riveting die, the forming re-riveting die, the detector, the discharge gap, and the loading gap. When the detector detects that an aluminum ball is riveted to the bottom of the welding stud, the horizontal linear push rod will work when the welding stud moves to the discharge gap, pushing the push plate and the movable guard plate to move. The push plate contacts the part of the welding stud located below the turntable, and the movable guard plate moves out of the discharge gap, so that the push plate can push the welding stud out of the notch to realize the unloading. When the detector detects that there is no aluminum ball at the bottom of the welding stud, the horizontal linear push rod will not work when the welding stud moves to the discharge gap, and the welding stud continues to be conveyed on the turntable. When it moves to the loading gap, the limiting linear push rod works in advance, and its telescopic end extends to intercept the welding stud in the feeding guide rail, and no more loading is performed, so that the welding stud without an aluminum ball can be riveted with an aluminum ball again.

[0006] An inclined feeding guide rail is fixed on the frame. A limit linear push rod and a material sensor are installed at the material discharge end of the feeding guide rail. The limit linear push rod and the material sensor are located on both sides of the feeding guide rail.

[0007] The inclined feed guide utilizes gravity to allow the welding studs to slide down automatically. This design also ensures stable feeding direction, preventing jamming or deviation during transport. Limiting linear push rods can intercept welding studs based on their size and processing requirements. Material sensors detect the presence of welding studs on the feed guide in real time. When a stud is detected, subsequent equipment actions are controlled, automating the feeding process. This reduces manual monitoring and intervention, improving automation and efficiency while lowering labor costs.

[0008] An inclined discharge track is fixed on the frame, with the upper end of the discharge track located directly below the discharge gap.

[0009] The inclined discharge track also utilizes gravity to allow the finished welding studs to slide out of the equipment automatically. The welding studs pushed out by the pushing mechanism can smoothly and accurately enter the discharge track, realizing rapid discharge and collection of welding studs, avoiding the welding studs falling or accumulating during the discharge process, improving the smoothness of discharge and production efficiency, and making the entire production process more continuous and efficient. A guide rod is fixed on the frame, and the lifting seat is slidably connected to the guide rod. The guide rod provides guidance for the linear lifting of the lifting platform, limiting the swaying and deviation of the lifting platform during the lifting process, and ensuring that the lifting platform can rise and fall smoothly along the predetermined straight trajectory.

[0010] The top of the punching die is provided with a first groove, and a protruding punch pin is fixed in the first groove. The protruding punch pin can punch the small end of the welding stud to form an aluminum ball mounting hole.

[0011] The ball feeding initial riveting die includes a fixed seat, an insert rod, a movable seat, and a spring. The fixed seat is fixedly connected to the lifting seat. The insert rod is fixedly installed on the fixed seat. The lower end of the spring is connected to the fixed seat, and the upper end of the spring is connected to the movable seat. A second groove is opened on the top of the movable seat. A rivet ball hole communicating with the second groove is opened axially inside the movable seat. The insert rod is inserted into the rivet ball hole. A ball inlet hole is opened radially on the movable seat and communicates with the rivet ball hole. A ball inlet tube communicating with the ball inlet hole is installed on the movable seat. In its natural state, the ball inlet hole is located above the insert rod, and the space inside the rivet ball hole and above the insert rod can only accommodate a single aluminum ball. The forming re-riveting die can re-rivet the aluminum ball at the small end of the welding stud, so that the diameter, height, and firmness of the riveted aluminum ball meet the requirements.

[0012] The spring mechanism provides elastic support to the movable seat, delivering appropriate pressure during the aluminum ball riveting process to ensure the aluminum ball smoothly enters the riveting hole and is initially riveted to the welding stud. The interconnected design of the ball inlet tube, inlet hole, and riveting hole enables automatic feeding and positioning of the aluminum ball, ensuring only one ball enters the riveting hole at a time, improving feeding accuracy and stability, and reducing ball waste and processing errors. The forming and re-riveting die re-rivets the aluminum ball, allowing for fine processing of the initially riveted ball to ensure its diameter, height, and firmness meet stringent quality standards, further enhancing the quality and performance of the welding stud riveted aluminum ball and meeting the requirements of different application scenarios.

[0013] The detector is fixedly mounted on the frame or on the lifting platform. It can be installed on the frame or on the lifting platform depending on the equipment layout and testing requirements, facilitating real-time detection of welded studs and riveted aluminum balls.

[0014] The push plate is fixedly connected to the movable guard plate via a connecting rod.

[0015] Top blocks are installed on the frame above the punching die, the ball feeding initial riveting die, and the forming re-riveting die.

[0016] The beneficial effects of this technical solution are as follows: By linking the detector and the feeding mechanism, qualified products are efficiently unloaded and unqualified products are processed in a cyclical manner. The detector checks whether the welding studs are qualified for riveting. The feeding mechanism performs different actions based on the detection results: When qualified welding studs reach the discharge gap, the horizontal linear push rod drives the push plate and the movable guard plate to push the welding studs out of the turntable and into the discharge track; when unqualified welding studs are detected, the horizontal linear push rod does not move, allowing them to remain on the turntable and undergo the complete riveting process again until they are qualified and unloaded. This improves the degree of automation, reduces manual intervention, avoids the outflow of unqualified products, reduces costs, and ensures product quality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the automatic aluminum ball riveting device for producing welding studs according to an embodiment of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the automatic aluminum ball riveting device for producing welding studs according to an embodiment of the present invention. Figure 2 (Rack omitted); Figure 3 for Figure 2 A magnified view of a section at point A in the middle; Figure 4 This is a schematic diagram of the structure of the automatic aluminum ball riveting device for producing welding studs according to an embodiment of the present invention. Figure 3 (The movable guard plate is moved out of the discharge gap). Figure 5This is a front view of the automatic aluminum ball riveting device for producing welding studs according to an embodiment of the present utility model (with the movable guard plate moved out of the discharge gap). In the diagram, 1. Frame; 2. Turntable; 3. Linear lifting device; 4. Rotary drive device; 5. Lifting seat; 6. Punching die; 7. Ball feeding initial riveting die; 8. Forming and re-riveting die; 9. Notch; 10. Fixed guard plate; 11. Detector; 12. Discharge gap; 13. Feeding gap; 14. Horizontal linear push rod; 15. Push plate; 16. Movable guard plate; 17. Welding stud; 18. Feed guide rail; 19. Limiting linear push rod; 20. Material sensor; 21. Discharge track; 22. Guide rod; 23. Protruding punch; 24. Fixed seat; 25. Insert rod; 26. Movable seat; 27. Spring; 28. Riveting ball hole; 29. ​​Ball inlet hole; 30. Ball inlet tube; 31. Connecting rod; 32. Top block. Detailed Implementation

[0018] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0019] Please see Figures 1 to 5 This application provides an automatic aluminum ball riveting device for welding stud production, including a frame 1, a turntable 2, a riveting module, a linear lifting device 3, a rotary drive device 4, a pushing mechanism, a fixed guard plate 10, and a detector 11.

[0020] The linear lifting device 3 and the rotary drive device 4 are fixedly connected to the frame 1. The linear lifting device 3 is a hydraulic cylinder, pneumatic cylinder, or electric cylinder, and the rotary drive device 4 is a cam divider or an electric rotary platform.

[0021] The riveting module includes a lifting seat 5, a punching die 6, a ball feeding initial riveting die 7, and a forming re-riveting die 8. The lifting seat 5 is installed on a linear lifting device 3 and is driven to move linearly by the linear lifting device 3.

[0022] The punching die 6, the ball feeding initial riveting die 7, and the forming re-riveting die 8 are sequentially installed on the lifting seat 5. The guide rod 22 is fixed on the frame 1. The lifting seat 5 is slidably connected to the guide rod 22, making the lifting of the lifting seat 5 more stable.

[0023] The turntable 2 has several evenly distributed notches 9 on its edge. The notches 9 are used to accommodate welding studs 17. The turntable 2 is driven to rotate by a rotary drive device 4. The rotary drive device 4 drives the turntable 2 to rotate intermittently so that the notches 9 pass through the punching die 6, the ball feeding initial riveting die 7, the forming and re-riveting die 8, the detector 11, the discharge gap 12, and the feeding gap 13 in sequence.

[0024] The fixed guard plate 10 is located around the turntable 2, and has a discharge gap 12 and a loading gap 13. In this embodiment, the fixed guard plate 10 has a split two-part plate structure, and the gap between the two parts forms the discharge gap 12 and the loading gap 13. The fixed guard plate 10 is used to prevent the welding stud 17 from disengaging from the notch 9.

[0025] The feeding mechanism includes a horizontal linear push rod 14, a push plate 15, and a movable guard plate 16. The horizontal linear push rod 14 is selected from pneumatic cylinders, electric cylinders, or hydraulic cylinders. The horizontal linear push rod 14 is fixedly connected to the frame 1. The push plate 15 is installed at the output end of the horizontal linear push rod 14. The push plate 15 is fixedly connected to the movable guard plate 16 through connecting rods 31. There are two connecting rods 31, located on both sides of the push plate 15, which will not affect the feeding of the welding studs 17. The movable guard plate 16 can be driven by the horizontal linear push rod 14 to move closer to or away from the discharge gap 12. When the movable guard plate 16 is located in the discharge gap 12, it can prevent the welding studs 17 from disengaging from the notch 9. When the movable guard plate 16 moves out of the discharge gap 12, the welding studs 17 can be pushed out of the notch 9 at the discharge gap 12.

[0026] Detector 11 is fixedly mounted on frame 1 or lifting base 5 and is used to detect whether an aluminum ball is riveted to the bottom of welding stud 17. Detector 11 is a diffuse reflection sensor, which works based on the reflection characteristics of light. When the turntable 2 rotates the welding stud 17 to the detection position, the diffuse reflection sensor emits light. If an aluminum ball is riveted to the bottom of the welding stud 17, most of the light will be reflected back to the diffuse reflection sensor because the surface of the aluminum ball is smooth and has a high reflectivity. If there is no aluminum ball at the bottom of the welding stud 17, the surface condition of the bottom of the welding stud 17 is different from that of the aluminum ball, and the reflectivity of light is lower, resulting in weaker light intensity reflected back to the diffuse reflection sensor. The diffuse reflection sensor converts the received light signal into an electrical signal through a built-in photoelectric conversion element and compares it with a preset threshold. When the intensity of the received electrical signal is greater than the threshold, it is determined that an aluminum ball is riveted to the bottom of the welding stud 17; when the intensity of the electrical signal is less than the threshold, it is determined that there is no aluminum ball at the bottom of the welding stud 17. Based on the detection result, the corresponding operation is performed.

[0027] An inclined feeding guide rail 18 is fixed on the frame 1. The feeding guide rail 18 is used to transport welding studs. The head size of the welding stud is larger than the internal gap of the feeding guide rail 18. The head of the welding stud is supported on the feeding guide rail 18. A limit linear push rod 19 and a material sensor 20 are installed at the feeding end of the feeding guide rail 18. The material sensor 20 is an infrared sensor used to detect whether there is welding stud 17 material at the end of the feeding guide rail 18. The limit linear push rod 19 is a cylinder or a push-pull electromagnet. When the limit linear push rod 19 is working, it can block the welding stud 17 from passing through.

[0028] The limiting linear push rod 19 and the material sensor 20 are located on both sides of the feeding guide rail 18, respectively, to realize automatic feeding and precise positioning of the welding nail 17. An inclined discharge rail 21 is fixed on the frame 1, with the upper end of the discharge rail 21 located directly below the discharge gap 12 to facilitate the discharge of the welding nail 17.

[0029] The top of the punching die 6 is provided with a first groove, which allows the small end of the bottom of the welding stud 17 to enter. A protruding punch 23 is fixed in the first groove, which can punch the small end of the bottom of the welding stud 17 to form an aluminum ball mounting hole.

[0030] The ball feeding initial riveting die 7 includes a fixed base 24, an insert rod 25, a movable base 26, and a spring 27. The fixed base 24 is fixedly connected to the lifting base 5. The insert rod 25 is fixedly installed on the fixed base 24. The lower end of the spring 27 is connected to the fixed base 24, and the upper end of the spring 27 is connected to the movable base 26. A second groove is provided on the top of the movable base 26. A ball-feeding hole 28 communicating with the second groove is provided axially inside the movable base 26. The insert rod 25 is inserted into the ball-feeding hole 28. A ball-feeding hole 29 is provided radially on the movable base 26 for ball feeding. Hole 29 is connected to ball-inlet hole 28. A ball-inlet tube 30 connected to ball-inlet hole 29 is installed on movable seat 26. The other end of ball-inlet tube 30 is connected to aluminum ball storage device, which can replenish aluminum balls into ball-inlet tube 30. In the natural state, ball-inlet hole 29 is located above insert rod 25, and the space in ball-inlet hole 28 and above insert rod 25 can only accommodate a single aluminum ball, so that insert rod 25 pushes a single aluminum ball to rivet aluminum ball to welding stud 17, avoiding the presence of multiple aluminum balls, which would affect the normal riveting operation of welding stud 17.

[0031] This device is also equipped with a controller, which is communicatively connected to all electrical components of the device. During the automatic aluminum ball riveting device for welding stud production, the controller controls the entire workflow, ensuring the orderly feeding, processing, inspection, and unloading of the welding studs 17. The specific process is as follows: S1, Feeding: The welding stud 17 slides down the inclined feeding guide rail 18 by gravity. When the material sensor 20 detects that the welding stud 17 is close to the feeding end, the control system controls the limit linear push rod 19 to extend and intercept and position the welding stud 17. When the turntable 2 notch 9 rotates to the corresponding position, the limit linear push rod 19 retracts and the welding stud 17 falls into the notch 9 to complete the feeding. S2, Processing: The rotary drive device 4 drives the turntable 2 to rotate intermittently, and the welding stud 17 passes through each processing station in sequence; when it reaches below the punching die 6, the linear lifting device 3 drives the lifting seat 5 to rise, and the small end of the welding stud 17 enters the first groove. The punching die 6 pushes the welding stud 17 to rise, so that the top end of the welding stud 17 abuts against the top block 32. Then, the protruding punch 23 punches a hole at the small end of the welding stud 17. After that, the linear lifting device 3 drives the lifting seat 5 to descend and reset; the welding stud 17 rotates to below the ball feeding initial riveting die 7, and the aluminum ball enters the riveting hole 28 through the ball inlet tube 30 and the ball inlet hole 29. The linear lifting device 3 drives the lifting seat 5 to rise, and the welding stud 17... After the small end of the 7-pin abuts against the second groove, the movable seat 26 pushes the welding nail 17 upward, so that the top of the welding nail 17 abuts against the top block 32. Then the spring 27 is compressed, so that the insert rod 25 rises relative to the movable seat 26. The insert rod 25 pushes the aluminum ball in the rivet hole 28 upward, so that the aluminum ball contacts the bottom end of the welding nail 17. The aluminum ball enters the punch hole at the bottom end of the welding nail 17, and the aluminum ball is initially riveted to the welding nail 17. Then the linear lifting device 3 drives the lifting seat 5 to descend and reset. The welding nail 17 rotates to the bottom of the forming and riveting die 8, and the lifting seat 5 rises again to rivet the aluminum ball again to meet the quality requirements. After the processing is completed, the lifting seat 5 descends and resets. S3, Inspection: The riveted stud 17 rotates with the turntable 2 to the detector 11. The detector 11 emits light. If the bottom of the stud 17 is riveted with an aluminum ball, its high reflectivity makes the electrical signal intensity of the reflected light after photoelectric conversion greater than the threshold, and it is judged to be qualified; if the aluminum ball is not riveted, the reflected light is weak and the electrical signal intensity is less than the threshold, and it is judged to be unqualified. S4, Discharge and handling of defective products: When the qualified welding stud 17 moves to the discharge gap 12, the horizontal linear push rod 14 starts, pushing the push plate 15 and the movable guard plate 16. The push plate 15 pushes the welding stud 17 out of the notch 9, and the welding stud 17 slides out of the equipment along the discharge track 21. When the unqualified welding stud 17 reaches the discharge gap 12, the horizontal linear push rod 14 does not move, and the welding stud 17 continues to be conveyed. When it moves to the loading gap 13, the limit linear push rod 19 extends to intercept the loading of new welding stud 17. The unqualified welding stud 17 is recycled through each processing station again and re-processed by punching, feeding ball initial riveting and forming re-riveting.

[0032] It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

[0033] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. An automatic aluminum ball riveting device for producing welding studs, comprising a frame (1), a turntable (2), a riveting module, a linear lifting device (3), and a rotary drive device (4), wherein the linear lifting device (3) and the rotary drive device (4) are fixedly connected to the frame (1), the riveting module comprises a lifting seat (5), a punching die (6), a ball feeding initial riveting die (7), and a forming re-riveting die (8), the lifting seat (5) is driven to move linearly by the linear lifting device (3), the punching die (6), the ball feeding initial riveting die (7), and the forming re-riveting die (8) are sequentially installed on the lifting seat (5), the turntable (2) is driven to rotate by the rotary drive device (4), and the turntable (2) has several evenly distributed notches (9) on its edge; characterized in that, It also includes a feeding mechanism, a fixed guard plate (10) and a detector (11). The fixed guard plate (10) is located around the turntable (2). The fixed guard plate (10) has a discharge gap (12) and a feeding gap (13). The feeding mechanism includes a horizontal linear push rod (14), a push plate (15) and a movable guard plate (16). The horizontal linear push rod (14) is fixedly connected to the frame (1). The output end of the horizontal linear push rod (14) is equipped with a push plate (15). The push plate (15) is fixedly connected to the movable guard plate (16). The movable guard plate (16) can be driven by the horizontal linear push rod (14) to approach or move away from the discharge gap (12). The detector (11) is used to detect whether aluminum balls are riveted to the bottom of the welding stud (17).

2. The automatic aluminum ball riveting device for producing welding studs according to claim 1, characterized in that, The rotary drive device (4) drives the turntable (2) to rotate intermittently so that the notch (9) passes through the punching die (6), the ball feeding initial riveting die (7), the forming re-riveting die (8), the detector (11), the discharge gap (12), and the feeding gap (13) in sequence.

3. The automatic aluminum ball riveting device for producing welding studs according to claim 1, characterized in that, The frame (1) is fixed with an inclined feeding guide rail (18). A limit linear push rod (19) and a material sensor (20) are installed at the feeding end of the feeding guide rail (18). The limit linear push rod (19) and the material sensor (20) are located on both sides of the feeding guide rail (18).

4. The automatic aluminum ball riveting device for producing welding studs according to claim 1, characterized in that, The frame (1) is fixed with an inclined discharge track (21), and the upper end of the discharge track (21) is located directly below the discharge gap (12).

5. The automatic aluminum ball riveting device for producing welding studs according to claim 1, characterized in that, A guide rod (22) is fixed on the frame (1), and the lifting seat (5) is slidably connected to the guide rod (22).

6. The automatic aluminum ball riveting device for producing welding studs according to claim 1, characterized in that, The punching die (6) has a first groove at its top, and a protruding punch pin (23) is fixed in the first groove.

7. The automatic aluminum ball riveting device for producing welding studs according to claim 1, characterized in that, The ball feeding initial riveting mold (7) includes a fixed seat (24), a plug rod (25), a movable seat (26), and a spring (27). The fixed seat (24) is fixedly connected to the lifting seat (5). The plug rod (25) is fixedly installed on the fixed seat (24). The lower end of the spring (27) is connected to the fixed seat (24), and the upper end of the spring (27) is connected to the movable seat (26). A second groove is provided on the top of the movable seat (26), and an axial groove is provided inside the movable seat (26) that corresponds to the second groove. The ball-connecting hole (28) is connected to the ball-connecting hole (28), and the insert rod (25) is inserted into the ball-connecting hole (28). The movable seat (26) has a ball-connecting hole (29) radially opened. The ball-connecting hole (29) is connected to the ball-connecting hole (28). The movable seat (26) is equipped with a ball-connecting tube (30) connected to the ball-connecting hole (29). In its natural state, the ball-connecting hole (29) is located above the insert rod (25), and the space inside the ball-connecting hole (28) and above the insert rod (25) can only accommodate a single aluminum ball.

8. The automatic aluminum ball riveting device for producing welding studs according to claim 1, characterized in that, The detector (11) is fixedly installed on the frame (1) or on the lifting seat (5).

9. The automatic aluminum ball riveting device for producing welding studs according to claim 1, characterized in that, The push plate (15) is fixedly connected to the movable guard plate (16) via a connecting rod (31).

10. The automatic aluminum ball riveting device for producing welding studs according to claim 1, characterized in that, A top block (32) is installed on the frame (1) and above the punching die (6), the ball feeding initial riveting die (7), and the forming re-riveting die (8).

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