An automated bullet welding apparatus

Abstract

The utility model relates to welding technical field, concretely relates to a kind of automatic shell welding equipment, including rack, the middle portion of the top of rack is rotatably connected with rotating shaft workstation, the top of rotating shaft workstation is equipped with multiple groups of workpiece positioning module, the left end of the top of rack is fixedly connected with first Z direction screw rod guide rail mechanism, the outside of first Z direction screw rod guide rail mechanism is slidably connected with welding mechanism, the outside of welding mechanism is equipped with smoke suction subassembly, the right end of the top of rack is fixedly connected with X direction screw rod guide rail mechanism, the outside of X direction screw rod guide rail mechanism is slidably connected with Y direction screw rod guide rail mechanism, compared with existing welding equipment, equipment is through the collaborative design of each component, core solves the low degree of automation of traditional welding equipment, precision is insufficient, environmental protection is poor, the pain point of maintenance complexity, comprehensively improves the practicality and industrialization adaptability of welding operation.

Description

Technical Field

[0001] This utility model relates to the field of welding technology, specifically to an automated spring welding device. Background Technology

[0002] In the manufacturing fields of electronic components, automotive parts, and smart home accessories, miniature springs are core connecting or elastic components, and their welding quality directly affects the performance and service life of end products. As the industry's demand for product miniaturization, high precision, and mass production increases, traditional spring welding equipment has gradually exposed many technical defects and is no longer able to meet the requirements of modern production.

[0003] Traditional spring welding relies heavily on manual labor or semi-automated equipment, requiring manual handling of spring loading, posture adjustment, welding alignment, and finished product unloading. This manual operation is inefficient, with long welding cycles per workpiece, making it difficult to meet the demands of large-scale mass production. Furthermore, manual placement of springs is susceptible to factors such as operator experience and fatigue, leading to large positioning deviations, inconsistent welding postures, low product qualification rates, and uneven weld strength, affecting product stability. The welding process also generates high-temperature fumes containing metal dust and harmful gases. Traditional equipment often lacks effective fume treatment devices or uses only simple exhaust systems, causing fumes to directly diffuse into the workshop environment. This not only causes air pollution but can also be inhaled by operators, potentially leading to respiratory illnesses with prolonged exposure and posing serious occupational health risks. It is particularly unsuitable for cleanrooms, high-end electronics manufacturing, and other environments with stringent environmental requirements. Therefore, improving existing welding equipment and designing a new automated spring welding device to address these technical shortcomings and enhance the overall practicality of the welding equipment is crucial. Utility Model Content

[0004] The purpose of this utility model is to provide an automated spring welding equipment, which solves the problem that traditional spring welding relies on manual or semi-automated equipment, requiring manual completion of spring feeding, posture adjustment, welding alignment and finished product unloading.

[0005] To achieve the above objectives, this utility model provides the following technical solution: An automated spring welding device includes a frame, a rotary axis worktable rotatably connected to the middle of the top of the frame, multiple workpiece positioning modules on the top of the rotary axis worktable, a first Z-axis lead screw guide mechanism fixedly connected to the left end of the top of the frame, a welding mechanism slidably connected to the outer side of the first Z-axis lead screw guide mechanism, a fume extraction component on the outer side of the welding mechanism, an X-axis lead screw guide mechanism fixedly connected to the right end of the top of the frame, a Y-axis lead screw guide mechanism slidably connected to the outer side of the X-axis lead screw guide mechanism, a second Z-axis lead screw guide mechanism slidably connected to the outer side of the Y-axis lead screw guide mechanism, and an attitude detection and correction module slidably connected to the outer side of the second Z-axis lead screw guide mechanism. The fumigation assembly is used to adsorb and treat the fumes generated during welding by the welding mechanism.

[0006] As a preferred embodiment of this utility model, a correction mechanism is fixedly connected to the bottom of the attitude detection and correction module, and the correction mechanism includes an adjustment push rod that is slidably connected to the bottom of the attitude detection and correction module.

[0007] As a preferred embodiment of this utility model, a spring sheet picking and placing mechanism is fixedly connected to the bottom of the correction mechanism, and a spring sheet feeding module is fixedly connected to the top of the frame and below the spring sheet picking and placing mechanism.

[0008] As a preferred embodiment of this utility model, a first drive motor is fixedly connected inside the frame and at the bottom of the rotary axis worktable, and the drive end of the first drive motor is fixedly connected to the rotary axis worktable.

[0009] As a preferred embodiment of this utility model, the first Z-axis lead screw guide mechanism, the X-axis lead screw guide mechanism, the Y-axis lead screw guide mechanism, and the second Z-axis lead screw guide mechanism are all composed of a lead screw seat, a lead screw, and a second drive motor. The lead screw is rotatably connected inside the lead screw seat, the drive end of the second drive motor is fixedly connected to the lead screw, and the second drive motor is fixedly connected to the lead screw seat.

[0010] As a preferred embodiment of this utility model, a negative pressure box is fixedly connected to the right side of the top of the frame, a negative pressure pump is fixedly connected inside the negative pressure box, and a negative pressure pipe is fixedly connected to the outside of the negative pressure box extending from the negative pressure pump. The negative pressure pipe is interconnected with the spring clip picking and placing mechanism.

[0011] As a preferred embodiment of this utility model, the fumigation assembly includes a fumigation hood fixedly connected to the outside of the welding mechanism, a fumigation pipe fixedly connected to the top of the fumigation hood, a fumigation pump fixedly connected to the end of the fumigation pipe away from the fumigation hood, and a processing box fixedly connected to the outside of the fumigation pump.

[0012] As a preferred embodiment of this utility model, a cooling pipe is fixedly connected to the outside of the smoking pipe and at the top of the smoking hood. A water storage tank and a water pump are fixedly connected to both ends of the cooling pipe, respectively. The water storage tank and the water pump are interconnected. A semiconductor cooling chip is fixedly connected inside the water storage tank. A heat sink is fixedly connected to the outside of the water storage tank.

[0013] As a preferred embodiment of this utility model, the outer side of the processing box has multiple sets of exhaust grooves, the top of the processing box is slidably connected to a connecting plate, the bottom of the connecting plate is fixedly connected to a filter screen, the top of the connecting plate is rotatably connected to a limiting rod, and the top of the processing box and the outer side of the limiting rod are fixedly connected to two sets of limiting blocks, the limiting rod being engaged with the inner side of the limiting blocks.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. In this utility model, through the overall design, the equipment solves the pain points of low automation, insufficient precision, poor environmental performance, and complex maintenance of traditional welding equipment through the collaborative design of various components. It comprehensively improves the practicality and industrial adaptability of welding operations, integrates the automation functions of spring feeding, picking and placing, correction, welding, unloading, and fume treatment. Through the multi-station cyclic design of the rotary axis worktable, it realizes parallel operation of picking, correction, welding, and unloading. There is no need for manual intervention in spring placement, posture adjustment, welding start and stop, and fume treatment. Only the operator needs to replenish raw materials and collect finished products, which significantly reduces labor costs and operational errors and is suitable for the needs of large-scale batch production.

[0015] 2. In this utility model, through the design of the fumigation component, the fumigation hood is directly fixed to the outside of the welding mechanism, precisely covering the welding point. Combined with the negative pressure generated by the fumigation pump, it adsorbs and collects the welding fumes, preventing them from spreading into the workshop air and protecting the operator's respiratory health. The fumigation pipe moves synchronously with the welding mechanism, ensuring that the fumigation hood is always aligned with the welding point during the welding process, achieving adsorption without dead angles. This solves the problems of long adsorption distance and low efficiency of traditional external fumigation equipment. The cooling pipe outside the fumigation pipe uses circulating water cooled by a semiconductor refrigeration chip to quickly cool the high-temperature fumes, preventing damage to the fumigation pipe and filter components and extending the component's service life. The HEPA filter inside the treatment box can efficiently intercept harmful particles such as metal dust and welding fumes in the fumes. The filtered clean gas is discharged from the exhaust duct, meeting environmental standards while preventing dust accumulation from affecting the normal operation of workshop equipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the frame structure of this utility model; Figure 3This is a schematic diagram of the welding mechanism structure of this utility model; Figure 4 This is a schematic diagram of the spring feeding module of this utility model; Figure 5 This is a schematic diagram of the spring clip picking and placing mechanism of this utility model; Figure 6 This is a schematic diagram of the smoking component structure of this utility model; Figure 7 This is a schematic diagram of the water storage tank structure of this utility model; Figure 8 This is a schematic diagram of the connecting plate structure of this utility model.

[0017] In the diagram: 1. Frame; 2. Rotary axis worktable; 3. Workpiece positioning module; 4. First Z-axis lead screw guide mechanism; 5. Welding mechanism; 6. Smoke extraction assembly; 7. X-axis lead screw guide mechanism; 8. Y-axis lead screw guide mechanism; 9. Second Z-axis lead screw guide mechanism; 10. Attitude detection and correction module; 11. Correction mechanism; 12. Spring piece picking and placing mechanism; 13. Spring piece feeding module; 14. First drive motor; 15. Negative pressure box; 16. Negative pressure pipe; 17. Smoke hood; 18. Smoke extraction pipe; 19. Smoke extraction pump; 20. Processing box; 21. Cooling pipe; 22. Water storage tank; 23. Water pump; 24. Exhaust duct; 25. Connecting plate; 26. Filter screen; 27. Limiting rod; 28. Limiting block. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and 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 protection scope of the present utility model.

[0019] Example: Please see Figures 1-8 This utility model provides a technical solution: An automated spring welding device includes a frame 1, a rotary axis worktable 2 rotatably connected to the middle of the top of the frame 1, multiple workpiece positioning modules 3 on the top of the rotary axis worktable 2, a first Z-axis lead screw guide mechanism 4 fixedly connected to the left end of the top of the frame 1, a welding mechanism 5 slidably connected to the outside of the first Z-axis lead screw guide mechanism 4, a fumigation component 6 on the outside of the welding mechanism 5, an X-axis lead screw guide mechanism 7 fixedly connected to the right end of the top of the frame 1, a Y-axis lead screw guide mechanism 8 slidably connected to the outside of the X-axis lead screw guide mechanism 7, a second Z-axis lead screw guide mechanism 9 slidably connected to the outside of the Y-axis lead screw guide mechanism 8, and an attitude detection and correction module 10 slidably connected to the outside of the second Z-axis lead screw guide mechanism 9. The fume extraction component 6 is used to adsorb and treat the fumes generated by the welding mechanism 5.

[0020] Furthermore, a correction mechanism 11 is fixedly connected to the bottom of the attitude detection and correction module 10. The correction mechanism 11 includes an adjustment push rod that is slidably connected to the bottom of the attitude detection and correction module 10. During the adsorption and transfer of the spring piece by the spring piece pick-up and drop mechanism 12, it is easy to cause slight attitude deviations due to factors such as uneven negative pressure adsorption force and vibration of the transfer path, such as angle tilting and position misalignment. The sliding adjustment push rod of the correction mechanism 11 can cooperate with the recognition results of the attitude detection and correction module 10 to achieve a small sliding adjustment along the horizontal direction. By precisely pushing the spring piece to adjust the attitude, the offset of the spring piece is controlled within a very small range, ensuring that when the spring piece is finally placed on the workpiece positioning module 3, its welding position is completely matched with the welding path of the welding mechanism 5, thus avoiding welding problems such as incomplete welding and misaligned welding caused by attitude deviation from the source.

[0021] The bottom of the calibration mechanism 11 is fixedly connected to the spring piece picking and placing mechanism 12. The top of the frame 1 and below the spring piece picking and placing mechanism 12 is fixedly connected to the spring piece feeding module 13. The right side of the top of the frame 1 is fixedly connected to the negative pressure box 15. The negative pressure pump is fixedly connected inside the negative pressure box 15. The negative pressure pump extends to the outside of the negative pressure box 15 and is fixedly connected to the negative pressure pipe 16. The negative pressure pipe 16 is interconnected with the spring piece picking and placing mechanism 12. The calibration mechanism 11 and the spring piece picking and placing mechanism 12 are fixedly connected, forming an integrated execution unit. After the attitude detection and calibration module 10 identifies the spring piece deviation, the adjusting rod of the calibration mechanism 11 can directly adjust the spring piece adsorbed by the spring piece picking and placing mechanism 12. The device allows for fine-tuning of the attitude without transferring the spring from the spring pick-and-place mechanism 12 to a separate calibration component. This avoids secondary attitude deviations caused by vibration and collision during the transfer process. This design ensures that the calibrated spring can directly enter the subsequent transfer process with a precise attitude. The negative pressure box 15 provides a closed protective space for the negative pressure pump, avoiding interference from external airflow and ensuring that the suction force output by the negative pressure pump is uniform and stable. This effectively prevents the spring from falling or shifting during the transfer process. Compared with the rigid clamping of mechanical grippers, negative pressure adsorption fixes the spring through surface contact force, which can avoid physical damage such as indentations and deformation caused by the grippers to the spring, especially thin and easily deformable springs, thereby improving the finished product qualification rate.

[0022] Secondly, a first drive motor 14 is fixedly connected inside the frame 1 and at the bottom of the rotary axis worktable 2. The drive end of the first drive motor 14 is fixedly connected to the rotary axis worktable 2. When the first drive motor 14 is started, the rotary axis worktable 2 can be driven to rotate.

[0023] Furthermore, the first Z-axis lead screw guide mechanism 4, the X-axis lead screw guide mechanism 7, the Y-axis lead screw guide mechanism 8, and the second Z-axis lead screw guide mechanism 9 are all composed of a lead screw seat, a lead screw, and a second drive motor. The lead screw is rotatably connected inside the lead screw seat, and the drive end of the second drive motor is fixedly connected to the lead screw. The second drive motor is also fixedly connected to the lead screw seat. Mechanisms with the same structure can be adapted to the same control system, such as a stepper motor controller. There is no need to write separate control programs for mechanisms in different directions, which simplifies the design and debugging of the equipment's electrical control system and reduces the difficulty of upgrading or maintaining the control system later. There are no easily worn intermediate transmission components in the structure. Only the lubrication status of the lead screw in the lead screw seat and the tightness of the connection between the motor and the lead screw need to be checked periodically. The maintenance process is simple and the cycle is long. Even if a component needs to be replaced, because each component is modularly connected to the lead screw seat, it can be directly disassembled and replaced without disassembling other structures of the equipment, reducing maintenance downtime.

[0024] Furthermore, the fumigation assembly 6 includes a fumigation hood 17 fixedly connected to the outside of the welding mechanism 5. A fumigation pipe 18 is fixedly connected to the top of the fumigation hood 17. A fumigation pump 19 is fixedly connected to the end of the fumigation pipe 18 away from the fumigation hood 17. A processing box 20 is fixedly connected to the outside of the fumigation pump 19. A cooling pipe 21 is fixedly connected to the outside of the fumigation pipe 18 and located at the top of the fumigation hood 17. A water storage tank 22 and a water pump 23 are fixedly connected to both ends of the cooling pipe 21, respectively. The water storage tank 22 and the water pump 23 are interconnected. A semiconductor cooling chip is fixedly connected inside the water storage tank 22. A heat sink is fixedly connected to the outside of the semiconductor cooling chip extending to the outside of the water storage tank 22. Multiple exhaust slots 24 are opened on the outside of the processing box 20. A connecting plate 25 is slidably connected to the top of the processing box 20. A filter screen 26 is fixedly connected to the bottom of the connecting plate 25. A limit rod 27 is rotatably connected to the top of the connecting plate 25. Two sets of limit blocks 28 are fixedly connected to the top of the processing box 20 and located outside the limit rod 27. The filter is snapped into the inside of the limiting block 28. When welding fumes are generated by the welding mechanism 5, the smoke pump 19 is activated to create a negative pressure at the bottom of the smoke hood 17 through the smoke pipe 18, which guides the welding fumes into the interior of the processing box 20. When the fumes are introduced into the smoke pipe 18, the semiconductor cooling chip is activated to cool the water flow in the water storage tank 22 through the cooling end. At the same time, the heat sink dissipates heat from the heating end. The water pump 23 is activated to guide the water in the water storage tank 22 into the cooling pipe 21. The cooling pipe 21 can cool the smoke pipe 18, thereby enabling the smoke pipe 18 to cool the fumes. When the fumes are introduced into the processing box 20, they are filtered by the filter screen 26 and then discharged through the exhaust trough 24. When the filter screen 26 needs to be cleaned, the limiting rod 27 is rotated to move out from the inside of the two sets of limiting blocks 28, so that the connecting plate 25 can be moved to remove the filter screen 26 from the interior of the processing box 20 for cleaning.

[0025] In this embodiment, the specific implementation scenario is as follows: In actual use, the raw material of the spring sheet to be welded is poured into the spring sheet feeding module 13. After the equipment control system receives the start signal, the X-direction lead screw guide mechanism 7, the Y-direction lead screw guide mechanism 8, and the second Z-direction lead screw guide mechanism 9 work together to drive the spring sheet picking and placing mechanism 12 to move above the feeding station. The negative pressure pump in the negative pressure box 15 starts, providing a stable adsorption force to the spring sheet picking and placing mechanism 12 through the negative pressure pipe 16, accurately adsorbing a single spring sheet. The spring sheet picking and placing mechanism 12 carries the spring sheet to the feeding station. Above the workpiece positioning module 3 on the rotary axis worktable 2, the vision sensor of the attitude detection and correction module 10 identifies the attitude of the spring in real time. If there is an angular tilt or positional deviation, the adjusting rod of the correction mechanism 11 makes a slight adjustment in the horizontal direction. After the correction is completed, the spring picking and placing mechanism 12 releases the negative pressure, and the spring falls into the workpiece positioning module 3. The first drive motor 14 starts, driving the rotary axis worktable 2 to rotate intermittently by 180°, moving the workpiece positioning module 3 with the spring to the welding station. At the same time, the next empty workpiece positioning module 3 moves synchronously to the welding station. The material handling station enables parallel operations of material handling, alignment, and welding. The first Z-axis lead screw guide mechanism 4 drives the welding mechanism 5 to descend to a preset height, and the welding power supply is activated to complete the spot welding operation. During the welding process, the fume extraction component 6 is activated simultaneously, the fume extraction hood 17 covers the welding point, and the fume extraction pump 19 draws in the fumes through the fume extraction pipe 18. After passing through the cooling pipe 21, the fumes enter the treatment box 20, are filtered by the HEPA filter 26, and are discharged from the exhaust trough 24 in compliance with standards. After welding is completed, the rotary axis worktable 2 continues to rotate 90°, and the welded workpiece is transferred to the unloading station. The production line conveyor belt or manual material handling device transfers the finished product to the next process, realizing a fully automated closed loop. The multi-station cyclic design of the equipment and the high-precision transmission of the lead screw guide mechanism solve the pain points of low efficiency, poor accuracy, and insufficient consistency of traditional manual welding. The combined design of negative pressure adsorption and posture correction avoids deformation and positioning deviation during the welding of thin spring sheets, and is suitable for rapid switching production of multiple specifications of spring sheets. Compared with existing welding equipment, this utility model can improve the overall practicality of welding equipment through design.

[0026] 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 spring welding device, comprising a frame (1), characterized in that: A rotary axis worktable (2) is rotatably connected to the middle of the top of the frame (1). The top of the rotary axis worktable (2) is provided with multiple workpiece positioning modules (3). A first Z-axis lead screw guide mechanism (4) is fixedly connected to the left end of the top of the frame (1). A welding mechanism (5) is slidably connected to the outside of the first Z-axis lead screw guide mechanism (4). A fumigation component (6) is provided on the outside of the welding mechanism (5). An X-axis lead screw guide mechanism (7) is fixedly connected to the right end of the top of the frame (1). A Y-axis lead screw guide mechanism (8) is slidably connected to the outside of the X-axis lead screw guide mechanism (7). A second Z-axis lead screw guide mechanism (9) is slidably connected to the outside of the Y-axis lead screw guide mechanism (8). An attitude detection and correction module (10) is slidably connected to the outside of the second Z-axis lead screw guide mechanism (9). The fumigation assembly (6) is used to adsorb and treat the fumes generated by the welding mechanism (5).

2. The automated spring welding equipment according to claim 1, characterized in that: The bottom of the attitude detection and correction module (10) is fixedly connected to a correction mechanism (11), which includes an adjustment rod that is slidably connected to the bottom of the attitude detection and correction module (10).

3. The automated spring welding equipment according to claim 1, characterized in that: A spring sheet picking and placing mechanism (12) is fixedly connected to the bottom of the correction mechanism (11), and a spring sheet feeding module (13) is fixedly connected to the top of the frame (1) and below the spring sheet picking and placing mechanism (12).

4. The automated spring welding equipment according to claim 1, characterized in that: A first drive motor (14) is fixedly connected inside the frame (1) and at the bottom of the rotary axis worktable (2), and the drive end of the first drive motor (14) is fixedly connected to the rotary axis worktable (2).

5. The automated spring welding equipment according to claim 1, characterized in that: The first Z-axis lead screw guide mechanism (4), the X-axis lead screw guide mechanism (7), the Y-axis lead screw guide mechanism (8), and the second Z-axis lead screw guide mechanism (9) are all composed of a lead screw seat, a lead screw, and a second drive motor. The lead screw is rotatably connected inside the lead screw seat, and the drive end of the second drive motor is fixedly connected to the lead screw. The second drive motor is fixedly connected to the lead screw seat.

6. The automated spring welding equipment according to claim 1, characterized in that: A negative pressure box (15) is fixedly connected to the right side of the top of the frame (1). A negative pressure pump is fixedly connected inside the negative pressure box (15). A negative pressure pipe (16) is fixedly connected to the outside of the negative pressure box (15) and the negative pressure pipe (16) is connected to the spring piece picking and placing mechanism (12).

7. The automated spring welding equipment according to claim 1, characterized in that: The fumigation assembly (6) includes a fumigation hood (17) fixedly connected to the outside of the welding mechanism (5), a fumigation tube (18) fixedly connected to the top of the fumigation hood (17), a fumigation pump (19) fixedly connected to the end of the fumigation tube (18) away from the fumigation hood (17), and a processing box (20) fixedly connected to the outside of the fumigation pump (19).

8. An automated spring welding device according to claim 7, characterized in that: A cooling pipe (21) is fixedly connected to the outside of the smoking pipe (18) and at the top of the smoking hood (17). A water tank (22) and a water pump (23) are fixedly connected to both ends of the cooling pipe (21). The water tank (22) and the water pump (23) are interconnected. A semiconductor cooling chip is fixedly connected inside the water tank (22). A heat sink is fixedly connected to the outside of the water tank (22).

9. An automated spring welding device according to claim 8, characterized in that: The processing box (20) has multiple sets of exhaust slots (24) on its outer side. A connecting plate (25) is slidably connected to the top of the processing box (20). A filter screen (26) is fixedly connected to the bottom of the connecting plate (25). A limit rod (27) is rotatably connected to the top of the connecting plate (25). Two sets of limit blocks (28) are fixedly connected to the top of the processing box (20) and outside the limit rod (27). The limit rod (27) is snapped into the inner side of the limit block (28).

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