An AI automatic laser spot welding detection and packaging equipment

Abstract

This invention discloses an AI-automated laser spot welding inspection and packaging device, relating to the field of laser spot welding. It includes a control base with a laser welding mechanism connected to its upper end. A bracket is fixed to the side of the control base, and a rotating shaft is rotatably connected inside the bracket. A rotating roller is fixed outside the rotating shaft, and a track connects two rotating rollers. Several equidistant clamping mechanisms are fixed on the track, with a through groove corresponding to each clamping mechanism. A groove is provided on the side of the control base, corresponding to the position of the laser welding mechanism. An abutment mechanism is located on one side of the laser welding mechanism. A transport mechanism is rotatably connected inside the bracket, corresponding to the abutment mechanism, and located below the abutment mechanism. A drive mechanism is provided outside the rotating shaft. This invention improves automation in laser welding, ensures the stability of the weld point, and thus improves welding quality. Simultaneously, it enables automatic separation of defective products through post-weld inspection.

Description

Technical Field

[0001] This invention relates to the technical field of laser spot welding, specifically to an AI-powered automatic laser spot welding inspection and packaging device. Background Technology

[0002] Laser spot welding machines utilize high-energy laser pulses to locally heat materials within a tiny area. The energy of the laser radiation diffuses into the material through heat conduction, melting the material to form a specific molten pool. It is a novel welding method, primarily used for welding thin-walled materials and precision parts. It can perform spot welding, butt welding, lap welding, and sealing welding, resulting in a high aspect ratio, narrow weld width, small heat-affected zone, minimal deformation, fast welding speed, smooth and aesthetically pleasing welds, requiring no or only simple post-weld treatment, high weld quality, no porosity, precise control, a small focused spot, high positioning accuracy, and easy automation.

[0003] Furthermore, for precision parts such as the housing used to mount semiconductor integrated circuit chips, it plays a role in placing, fixing, sealing, protecting the chip and enhancing its electrothermal performance. It also serves as a bridge between the internal world of the chip and the external circuitry—the contacts on the chip are connected to the pins of the package housing by wires, and these pins are then connected to other devices through wires on the printed circuit board.

[0004] In related technologies, after chip packaging, its pins need to be electrically connected to the integrated circuit board. The connection method is usually spot welding. The distance between the pins of the chip package is the same, and the distance between each spot welding position is fixed. During the operation, each spot welding requires the operator to position and adjust the spot welding position, moving the spot welding machine or the circuit board to align the spot welding machine with the pins.

[0005] Regarding the aforementioned technologies, the inventors believe that the following defects exist: when the spot welding machine is aligned with the integrated circuit board by manual movement, errors can easily occur in the moving distance during long-term and repeated movements, which can easily lead to the offset of the spot welding position and thus a decrease in the quality of spot welding. Summary of the Invention

[0006] The purpose of this invention is to improve automation in laser welding, ensure the stability of the welding point, thereby improving the welding quality, and to perform post-weld inspection to achieve automatic separation of defective products.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] An AI-powered automatic laser spot welding inspection and packaging device includes a control base with a laser welding mechanism connected to its upper end. A bracket fixed to the side of the control base is located on one side. Two rotating shafts are rotatably connected inside the bracket, and rotating rollers are fixed outside the rotating shafts. A track connects the two rotating rollers, and several equidistantly arranged clamping mechanisms are fixed on the track for fixing the welded workpiece. A through groove is provided on the track corresponding to each clamping mechanism. A control device for controlling the operation of the laser welding mechanism is located inside the control base. A groove is provided on the side of the control base, corresponding to the position of the laser welding mechanism. An abutment mechanism is located on one side of the laser welding mechanism to open the clamping mechanisms. A transport mechanism is rotatably connected inside the bracket and located below the abutment mechanism, corresponding to the position of the abutment mechanism. A drive mechanism is provided outside the rotating shafts to drive the track to rotate at a differential speed.

[0009] As a preferred embodiment of the present invention, the driving mechanism includes a first gear and a second gear fixed outside the rotating shaft, the first gear and the second gear having the same radius, and the number of teeth of the first gear being less than the number of teeth of the second gear.

[0010] As a preferred embodiment of the present invention, the first gear is externally meshed with a first drive gear, and the second gear is externally meshed with a second drive gear. Both the first drive gear and the second drive gear are half-gear structures. The meshing time of the first drive gear and the second drive gear is alternate. When the first drive gear meshes with the first gear, the second drive gear remains in an idle state. A drive shaft is inserted inside the first drive gear and the second drive gear. One end of the drive shaft is connected to a motor, and the motor is screwed onto a bracket.

[0011] As a preferred embodiment of the present invention, the clamping mechanism includes a fixed plate fixed on the track, a through hole on one side of the fixed plate, the through hole and the through groove being located in correspondence, clamping plates on both sides of the through hole, a first spring fixed to the clamping plate facing the inner wall of the fixed plate, a plurality of the first springs being provided along the length direction of the clamping plate, and the other end of the first springs being fixed to the inner wall of the fixed plate.

[0012] As a preferred embodiment of the present invention, the abutment mechanism includes a fixed track fixed on the control base. One end of the fixed track is arc-shaped. A sliding block is slidably connected inside the fixed track. A second spring is fixed to the side of the sliding block. A connecting block is fixed to the end of the second spring away from the sliding block. A rubber rack is fixed to the end of the connecting block away from the second spring. A third drive gear is engaged on the side of the rubber rack away from the connecting block. The third drive gear rotates inside the control base. The third drive gear is connected to a servo motor. The rubber gear is pointed towards the fixed plate end. The front end of the rubber gear slides against the inner wall of the clamping plate.

[0013] As a preferred embodiment of the present invention, the servo motor is electrically connected to a through-beam laser control switch. The transmitting end of the through-beam laser control switch is located below the groove, and the receiving end of the through-beam laser control switch is located above the groove. Both the transmitting end and the receiving end are fixed on the control base.

[0014] As a preferred embodiment of the present invention, the transport mechanism includes a support frame fixed on a bracket, a conical roller rotatably connected inside the support frame, a plurality of conical rollers arranged along the length of the support frame, the plurality of conical rollers being symmetrically arranged about the support frame, a conveyor belt covering the inside of the conical rollers, and the conveyor belt rotating when the conical rollers rotate, and a connecting rod fixed inside one of the conical rollers, the connecting rod extending out from one end of the support frame, and a motor connected to the extended end.

[0015] As a preferred embodiment of the present invention, a magnet is embedded in the side of the conical roller, and a metal block is embedded in the inner wall of the conveyor belt, and the magnet and the metal block are attracted to each other.

[0016] In summary, the beneficial technical effects of the present invention are as follows:

[0017] 1. A drive mechanism is set up in which the number of teeth of the first drive gear and the second drive gear are different, and the number of teeth of the second drive gear is greater than that of the first drive gear. Under the drive of motors of equal power, when the second drive gear acts as the drive component of the track, the rotation speed of the track decreases. Then, the first drive gear drives the track to rotate, and the fixed plate moves to the bottom of the laser welding mechanism. At the same time, the welding workpiece is placed inside the next fixed plate. After the fixed plate moves a distance, it switches to the second drive gear for driving. At this time, the fixed plate slowly moves along the bottom of the laser welding mechanism to perform welding. After the welding is completed, it switches back to the first drive gear. This process is repeated to automatically perform welding and feeding, effectively improving the automation level of welding. At the same time, the welding workpiece is kept moving at a constant speed during the welding process to ensure the welding quality.

[0018] 2. The distance between the rack and the laser welding mechanism is set to the distance between two fixed plates. The fixed plate at the rack passes through the through-beam laser switch. Since there are gaps and holes where the welding was unsuccessful, the laser can pass through the holes, and the receiving end can still receive the laser. At this time, the through-beam laser switch can trigger an electrical signal to control the rotation of the third drive gear, which in turn drives the rack to move and move against the clamping plate, so that the unsuccessful workpiece falls freely onto the conveyor belt below, thereby realizing the automatic separation of defective products. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the invention and form part of the specification, but do not constitute a limitation thereof. In the drawings:

[0020] Figure 1This is a schematic diagram of the structure of an AI-based automatic laser spot welding inspection and packaging device according to this embodiment;

[0021] Figure 2 This embodiment describes an AI-powered automated laser spot welding inspection and packaging device. Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 This embodiment describes an AI-powered automated laser spot welding inspection and packaging device. Figure 1 Enlarged view of point B in the middle;

[0023] Figure 4 This embodiment describes an AI-powered automated laser spot welding inspection and packaging device. Figure 1 Enlarged diagram of point C in the middle.

[0024] In the diagram: 1. Control base; 2. Laser welding mechanism; 3. Support; 4. Rotating shaft; 5. Rotating roller; 6. Track; 7. Through groove; 8. Groove; 9. First gear; 10. Second gear; 11. First drive gear; 12. Second drive gear; 13. Drive shaft; 14. Motor; 15. Fixed plate; 16. Through hole; 17. Clamping plate; 18. First spring; 19. Fixed track; 20. Sliding block; 21. Second spring; 22. Connecting block; 23. Rubber rack; 24. Third drive gear; 25. Servo motor; 26. Through-beam laser control switch; 27. Support frame; 28. Conical roller; 29. ​​Conveyor belt; 30. Connecting rod; 31. Magnet; 32. Metal block; 33. Motor. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings.

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Please see Figure 1-4This invention provides a technical solution: an AI automatic laser spot welding inspection and packaging device. The device includes a control base 1, with a laser welding mechanism 2 connected to its upper end. A bracket 3 is fixed to the side of the control base 1. Two rotating shafts 4 are rotatably connected inside the bracket 3. Rotating rollers 5 are fixed to the outside of the rotating shafts 4. A track 6 is connected between the two rotating rollers 5. Several equidistant clamping mechanisms are fixed on the track 6 for fixing the welding workpiece. A through groove 7 is provided at each clamping mechanism position on the track 6. A control device for controlling the operation of the laser welding mechanism 2 is installed inside the control base 1. A groove 8 is provided on the side of the control base 1, corresponding to the position of the laser welding mechanism 2. An abutment mechanism is provided on one side of the laser welding mechanism for opening the clamping mechanisms. A transport mechanism is rotatably connected inside the bracket 3, located below the abutment mechanism. A drive mechanism is provided outside the rotating shafts 4 to drive the track 6 to rotate differentially.

[0028] The drive mechanism includes a first gear 9 and a second gear 10 fixed outside the rotating shaft 4. The first gear 9 and the second gear 10 have the same radius, and the number of teeth of the first gear 9 is less than the number of teeth of the second gear 10.

[0029] Specifically, a first drive gear 11 meshes with the outside of the first gear 9, and a second drive gear 12 meshes with the outside of the second gear 10. Both the first drive gear 11 and the second drive gear 12 are half-gear structures. The meshing time of the first drive gear 11 and the second drive gear 12 is alternate. When the first drive gear 11 meshes with the first gear 9, the second drive gear 12 remains in an idle state. A drive shaft 13 is inserted inside the first drive gear 11 and the second drive gear 12. One end of the drive shaft 13 is connected to a motor 14, and the motor 14 is screwed onto the bracket 3.

[0030] Specifically, the first drive gear 11 and the second drive gear 12 rotate synchronously, and when the first drive gear 11 meshes with the first gear 9, the second gear 10 and the second drive gear 12 remain idle, and when the second drive gear 12 meshes with the second gear 10, the first gear 9 remains idle.

[0031] When the motor 14 is driven, the motor 14 can drive the drive shaft 13 to rotate, and the drive shaft 13 drives the first drive gear 11 and the second drive gear 12 to rotate. As the drive shaft 13 continues to rotate, the first drive gear 11 meshes with the first gear 9, driving the first gear 9 to rotate. At this time, the track 6 starts to rotate. At the same time, as the first drive gear 11 continues to rotate, the teeth on it no longer contact the first gear 9, and then the second drive gear 12 begins to mesh with the second gear 10. The second drive gear 12 starts to drive the track 6 to rotate. Since in this embodiment, the number of teeth of the first drive gear 11 and the second drive gear 12 are not equal, and the number of teeth of the second drive gear 12 is greater than the number of teeth of the first drive gear 11, under the drive of the motor 14 of equal power, when the second drive gear 12 acts as the driving component of the track 6, the rotation speed of the track 6 decreases.

[0032] The clamping mechanism includes a fixed plate 15 fixed on the track 6. A through hole 16 is provided on one side of the fixed plate 15, and the through hole 16 corresponds to the through groove 7. Clamping plates 17 are provided on both sides of the through hole 16. A first spring 18 is fixed to the end of the clamping plate 17 facing the inner wall of the fixed plate 15. Several first springs 18 are provided along the length of the clamping plate 17. The other end of the first spring 18 is fixed to the inner wall of the fixed plate 15. The welding workpiece is clamped and fixed by the two clamping plates 17.

[0033] The contact mechanism includes a fixed track 19 fixed on the control base 1. One end of the fixed track 19 is arc-shaped. A sliding block 20 is slidably connected inside the fixed track 19. A second spring 21 is fixed to the side of the sliding block 20. A connecting block 22 is fixedly connected to the end of the second spring 21 away from the sliding block 20. A rubber rack 23 is fixed to the end of the connecting block 22 away from the second spring 21. A third drive gear 24 meshes with the side of the rubber rack 23 away from the connecting block 22. The third drive gear 24 rotates inside the control base 1. A servo motor 25 is connected to the third drive gear 24. The end of the rubber gear facing the fixed plate 15 is set with a pointed end. The front end of the rubber gear slides against the inner wall of the clamping plate 17.

[0034] Meanwhile, the servo motor 25 is electrically connected to the through-beam laser control switch 26. The transmitting end of the through-beam laser control switch 26 is located below the groove 8, and the receiving end of the through-beam laser control switch 26 is located above the groove 8. Both the transmitting end and the receiving end are fixed on the control base 1.

[0035] When the servo motor 2514 drives the third drive gear 24 to rotate, the rack starts to rotate. In this embodiment, when the servo motor 25 rotates forward, it keeps the rack moving towards the fixed plate 15. As the rack moves, it drives the connecting block 22, the second spring 21, and the sliding block 20 to move. The sliding block 20 slides along the inside of the fixed track 19. Since the fixed track 19 is arc-shaped, when the sliding block 20 moves to the arc section of the fixed track 19, the second spring 21 is stretched, which pulls the connecting block 22 to move towards the fixed track 19. The rack then begins to bend, and the front end of the rack enters the inner wall of the clamping plate 17. As the rack continues to bend, it continues to move against the clamping plate 17. At this time, the first spring 18 is compressed, and the distance between the two clamping plates 17 increases continuously. The welded workpiece between the two clamping plates 17 falls freely along the through groove 7.

[0036] The transport mechanism includes a support frame 27 fixed on the bracket 3. A conical roller 28 is rotatably connected inside the support frame 27. Several conical rollers 28 are arranged along the length of the support frame 27. The conical rollers 28 are symmetrically arranged about the support frame 27. The inside of the conical rollers 28 is covered by a conveyor belt 29. When the conical rollers 28 rotate, they drive the transport to rotate. A connecting rod 30 is fixed inside one of the conical rollers 28. The connecting rod 30 extends out from one end of the support frame 27 and is connected to a motor 33 at the extended end.

[0037] Furthermore, a magnet 31 is embedded on the side of the conical roller 28, and a metal block 32 is embedded on the inner wall of the conveyor belt. The magnet 31 and the metal block 32 are attracted to each other. When the conveyor belt rotates to the top of the conical roller 28, the magnet 31 attracts the conveyor belt to transport in a V-shape.

[0038] The aforementioned fallen welding workpieces land on the conveyor belt, specifically at the V-shaped structure, which catches the welding workpieces while preventing them from falling off.

[0039] In this invention, the meshing drive stroke of the first drive gear 11 and the first gear 9 is set to be consistent with the distance between the two fixed disks 15, and the meshing drive stroke of the second drive gear 12 and the second gear 10 is set to be consistent with the width of the fixed disk 15. In specific processing, the workpiece to be welded is placed between the two clamping plates 17, and then the motor 14 is turned on. After the motor 14 is driven, the first drive gear 11 drives the track 6 to rotate, and the fixed disk 15 moves to the bottom of the laser welding mechanism 2. At the same time, the workpiece to be welded is placed inside the next fixed disk 15. Then, after the fixed disk 15 moves a distance, it switches to the second drive gear 12 for driving. At this time, the fixed disk 15 slowly moves along the bottom of the laser welding mechanism 2 for welding. After welding is completed, it switches back to the first drive gear 11. This process is repeated to automatically perform welding and feeding.

[0040] After welding, the workpiece continues to rotate with the track 6 to the next fixed plate 15 and stops, then begins to move slowly. Therefore, in this embodiment, the distance between the rack and the laser welding mechanism 2 is the distance between the two fixed plates 15. The fixed plate 15 at the rack passes through the through-beam laser switch. Since there are gaps and holes where the welding was unsuccessful, the laser can pass through the holes, and the receiving end can still receive the laser. At this time, the through-beam laser switch can trigger an electrical signal to control the third drive gear 24 to rotate, thereby driving the rack to move and move against the clamping plate 17, so that the unsuccessfully welded workpiece falls freely onto the conveyor track 6 below, thus separating the defective product.

[0041] Both the laser welding mechanism and its control equipment utilize conventional laser welding technology.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An AI-powered automated laser spot welding inspection and packaging device, characterized in that, The device includes a control base (1), with a laser welding mechanism (2) connected to the upper end of the control base (1). A bracket (3) is fixed to the side of the control base (1) on one side. A rotating shaft (4) is rotatably connected inside the bracket (3). There are two rotating shafts (4). A rotating roller (5) is fixed outside the rotating shaft (4). A track (6) is connected between the two rotating rollers (5). Several clamping mechanisms are fixed on the track (6) at equal intervals. The clamping mechanisms are used to fix the welding workpiece. A through groove (7) is provided on the track (6) corresponding to the position of each clamping mechanism. A control device for controlling the operation of the laser welding mechanism (2) is provided inside the control base (1). A groove (8) is provided on the side of the control base (1). The groove (8) is set to the position of the laser welding mechanism (2). An abutment mechanism is provided on one side of the laser welding mechanism. The abutment mechanism is used to open the clamping mechanism. A transport mechanism is rotatably connected inside the bracket (3) corresponding to the position of the abutment mechanism. Below, a drive mechanism is provided outside the rotating shaft (4) for driving the track (6) to rotate at a differential speed. The drive mechanism includes a first gear (9) and a second gear (10) fixed outside the rotating shaft (4). The first gear (9) and the second gear (10) have the same radius. The number of teeth of the first gear (9) is less than the number of teeth of the second gear (10). A first drive gear (11) meshes with the outside of the first gear (9), and a second drive gear (12) meshes with the outside of the second gear (10). The first drive gear (11) and the second drive gear (12) are both half gear structures. The meshing time of the first drive gear (11) and the second drive gear (12) is alternate. When the first drive gear (11) meshes with the first gear (9), the second drive gear (12) remains in an idle state. The first drive gear (11) and the second drive gear (12) are connected to a drive shaft (13). One end of the drive shaft (13) is connected to a motor (14). The motor (14) is screwed on the bracket (3).

2. The AI-powered automatic laser spot welding inspection and packaging equipment according to claim 1, characterized in that: The clamping mechanism includes a fixed plate (15) fixed on the track (6). A through hole (16) is provided on one side of the fixed plate (15). The through hole (16) and the through groove (7) are located in correspondence. Clamping plates (17) are provided on both sides of the through hole (16). A first spring (18) is fixed on the end of the clamping plate (17) facing the inner wall of the fixed plate (15). Several first springs (18) are provided along the length of the clamping plate (17). The other end of the first spring (18) is fixed on the inner wall of the fixed plate (15).

3. The AI-powered automatic laser spot welding inspection and packaging equipment according to claim 2, characterized in that: The contact mechanism includes a fixed track (19) fixed on the control base (1). One end of the fixed track (19) is arc-shaped. A sliding block (20) is slidably connected inside the fixed track (19). A second spring (21) is fixed on the side of the sliding block (20). A connecting block (22) is fixedly connected to the end of the second spring (21) away from the sliding block (20). A rubber rack (23) is fixed to the end of the connecting block (22) away from the second spring (21). A third drive gear (24) meshes with the side of the rubber rack (23) away from the connecting block (22). The third drive gear (24) rotates inside the control base (1). A servo motor (25) is connected to the third drive gear (24). The rubber gear is set with a pointed end facing the fixed plate (15). The front end of the rubber gear slides against the inner wall of the clamping plate (17).

4. The AI-powered automatic laser spot welding inspection and packaging equipment according to claim 3, characterized in that: The servo motor (25) is electrically connected to a through-beam laser control switch (26). The transmitting end of the through-beam laser control switch (26) is located below the groove (8), and the receiving end of the through-beam laser control switch (26) is located above the groove (8). Both the transmitting end and the receiving end are fixed on the control base (1).

5. The AI-powered automatic laser spot welding inspection and packaging equipment according to claim 1, characterized in that: The transport mechanism includes a support frame (27) fixed on the bracket (3). A conical roller (28) is rotatably connected inside the support frame (27). Several conical rollers (28) are arranged along the length of the support frame (27). Several conical rollers (28) are symmetrically arranged about the support frame (27). The inside of the conical rollers (28) is covered with a conveyor belt (29). When the conical rollers (28) rotate, they drive the transport to rotate. A connecting rod (30) is fixed inside one of the conical rollers (28). The connecting rod (30) extends out from one end of the support frame (27) and is connected to a motor.

6. The AI-powered automatic laser spot welding inspection and packaging equipment according to claim 5, characterized in that: The conical roller (28) has a magnet (31) embedded on its side and a metal block (32) embedded on the inner wall of the conveyor belt. The magnet (31) and the metal block (32) are attracted to each other.

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