Automobile part welding production device and production method

Abstract

The application relates to the technical field of part welding, in particular to an automobile part welding production device and a production method, which comprises a conveying mechanism and a carrier mechanism; the conveying mechanism is arranged on the ground; the carrier mechanism comprises a box body a, a box body b, a rotating disc a, a rotating disc b, a motor a, a butt joint shaft, an extension part a, a rotating part and a sealing cover; the rotating disc a is rotationally arranged on the inner wall of the box body a; the top end of the box body b is connected with an edge plate; the edge plate is slidably connected with the box body a; the edge plate is connected with the inner bottom end of the box body a through a spring; the inner wall of the edge plate is rotationally connected with the rotating disc b; the butt joint shaft is circumferentially arranged on the rotating disc b; the motor a is arranged on the inner side of the box body b and is in transmission connection with the rotating disc b; the extension part a is connected on the outer circumferential surface of the box body a and is connected with the rotating part; the rotating part is connected with the sealing cover. The application realizes the function that multiple holes on a flange plate are synchronously aligned with nuts, and the laser welding efficiency between the flange plate and the nut block is remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of component welding technology, specifically to a welding production apparatus and method for automotive components. Background Technology

[0002] Chinese Patent CN120326258B discloses a welding equipment for automotive parts production. The equipment involves attaching a nut to a positioning frame, then aligning the converged positioning frame with the sheet metal hole of the sheet metal part. Hydraulic oil is then injected into the drive unit via an oil supply system. The hydraulic oil flows through a delivery pipe into the transfer chamber and auxiliary pipe. The hydraulic oil in the transfer chamber drives the telescopic shafts in four sets of telescopic chambers to move outward synchronously, causing the four positioning frames to expand outward simultaneously. The limiting components at the end of each positioning frame extend outward accordingly. The four synchronously expanding positioning frames enable centering of the nut and sheet metal part, ensuring that the centers of the two parts are on the same axis, effectively preventing misalignment and improving welding accuracy.

[0003] However, the existing technology has the following drawbacks: it can only achieve automatic alignment of one sheet metal hole on the sheet metal part with the nut at a time. For sheet metal parts such as flanges (flanges required for components such as exhaust pipe heat shields, direct tapping on the flange is not strong enough, and the sheet metal is too thin to withstand repeated disassembly and assembly. Welded nuts provide high-strength and detachable threaded connection points), there are a large number of sheet metal holes. If they are aligned one by one, the welding efficiency will drop sharply, which will seriously affect the production efficiency of automotive parts. Summary of the Invention

[0004] The purpose of this invention is to address the problems existing in the background art by proposing a welding production device and method for automotive parts.

[0005] The technical solution of the present invention: A welding production apparatus for automotive parts, comprising: A conveying mechanism, located on the ground, for circumferentially conveying flanges; The carrier mechanism comprises multiple sets of components circumferentially distributed on the conveying mechanism. The carrier mechanism includes a box a, a box b, a turntable a, a turntable b, a motor a, a docking shaft, a telescopic component a, a rotating part, and a sealing cover. Turntable a is rotatably mounted on the inner wall of box a, and has multiple circular openings. A positioning post is connected to the center of turntable a. An edge plate is connected to the top of box b. The edge plate is slidably connected to the inner wall of box a, and is connected to the inner bottom end of box a via a spring. Turntable b is rotatably connected to the inner wall of the edge plate. Multiple docking shafts are circumferentially distributed on turntable b. Motor a is located inside box b and is connected to turntable b for transmission. Multiple telescopic components a are circumferentially distributed on the outer circumferential surface of box a, and the output end of telescopic component a is connected to the rotating part. The rotating part is connected to the sealing cover. The welding mechanism includes a vertical plate, a drive unit, plate a, plate b, and a laser welding head; the vertical plate is located on one side of the conveying mechanism; the drive unit is located on the vertical plate; plate a is rotatably mounted on the drive unit; plate b is connected to plate a; and the laser welding head is connected to plate b.

[0006] Preferably, the bottom end of the sealing cap is provided with a correction groove; the inner wall of the correction groove is an arc-shaped surface, which is used to push the nut to move; an annular notch is provided on the arc-shaped surface, and the inner wall of the annular notch is provided with a rubber layer; a laser pointer is provided on the inner wall of the correction groove.

[0007] Preferably, the bottom end of the turntable b is connected to gear b; the output end of the motor a is connected to gear a; gear b meshes with gear a.

[0008] Preferably, a rolling groove is provided at the top of the docking shaft; a ball bearing a is rolled inside the rolling groove.

[0009] Preferably, the rotating part includes a plate c, a housing, a motor b, a gear c, and a gear d; the plate c is connected to the telescopic component a; the housing is disposed on the plate c; the sealing cover is rotatably connected to the plate c via a rotating shaft a; the gear c is connected to the rotating shaft a; the motor b is disposed inside the housing and its output end is connected to the gear d; the gear d meshes with the gear c.

[0010] Preferably, the conveying mechanism includes a support cylinder, a support plate, a motor c, a conveying plate, a gear ring, and a gear f; the support plate is located at the top of the support cylinder; the gear ring is connected to the bottom end of the conveying plate; the gear ring is rotatably connected to the inner wall of the support cylinder; the motor c is located inside the support cylinder and its output end is connected to the gear f; the gear f meshes with the gear ring.

[0011] Preferably, with clockwise as a reference, the position of the welding mechanism is the welding station, and the next station is the operation station; the conveyor plate is provided with a magnetic suction plate; the gear b is provided with a magnetic suction ring; the magnetic suction plate is located below the operation station to magnetically attract the magnetic suction ring, so that the box b moves down and compresses the spring.

[0012] Preferably, the drive unit includes a hollow plate, a sliding plate, a telescopic component b, a motor e, a gear g, and a gear h; the hollow plate is connected to the upright plate; the sliding plate is slidably disposed inside the hollow plate; the telescopic component b is disposed inside the hollow plate and connected to the sliding plate; plate a is rotatably connected to the sliding plate via a rotating shaft b; gear h is connected to the rotating shaft b; the motor e is disposed on the sliding plate and its output end is connected to gear h; gear h meshes with gear g.

[0013] This invention also proposes a welding production method for automotive parts, employing the aforementioned welding production apparatus, comprising the following steps: S1. Preparation: One worker needs to stand at the operating position. When the carrier mechanism rotates to the operating position, place the flange on the turntable a and place the nut near the hole of the flange. S2. Alignment and Correction: After the flange and nut are placed, the operator activates the telescopic component a and motor b. The telescopic component a moves the sealing cover downwards. During the downward movement, the position of the sealing cover is adjusted by motor b according to the laser beam emitted by the laser pointer, so that the alignment groove is roughly above the nut. Then, the conveying mechanism continues to convey the carrier mechanism in a circular motion. After the sealing cover moves downwards, the arc surface of the alignment groove will obliquely press the edge of the nut, pressing the nut to be on the same circumference as the hole on the flange. Motor a drives turntable b to rotate slowly. When the docking shaft rotates to the round opening on turntable a, under the action of the spring force, the docking shaft passes through the round opening and drives turntable a to rotate. When the round opening on turntable a is aligned with the hole on the flange, the docking shaft will pass through the hole, causing turntable a to drive the flange to rotate. When the hole on the flange is aligned with the nut, the docking shaft will pass through the nut, automatically realizing the function of aligning the nut and the flange. S3. Welding operation: When the carrier mechanism rotates to the bottom of the welding mechanism, the conveying mechanism stops working, and the welding mechanism performs welding operations on the nut and flange. After the welding is completed, the conveying mechanism transports the carrier mechanism to the operating position again, and the operator can remove the welded flange and nut.

[0014] Compared with the prior art, the above-mentioned technical solution of the present invention has the following beneficial technical effects: By incorporating a conveying mechanism and a carrier mechanism, the flange and nut to be welded are placed on the carrier mechanism. During the conveying process, multiple holes on the flange and the nut are automatically and synchronously aligned, eliminating the need for individual alignment. This significantly improves the laser welding efficiency between the flange and the nut block, thereby enhancing the production efficiency of automotive parts. Attached Figure Description

[0015] Figure 1 This is a perspective view of one embodiment of the present invention; Figure 2 This is a cross-sectional structural diagram of the carrier mechanism in one embodiment of the present invention; Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a schematic diagram of the sealing cap structure in one embodiment of the present invention; Figure 5 This is a schematic cross-sectional view of the rotating part in one embodiment of the present invention; Figure 6 This is a schematic diagram of the assembly structure of the conveyor disc and the support cylinder in a cross-sectional state according to one embodiment of the present invention; Figure 7This is a schematic diagram of the welding mechanism in the cross-sectional state of a hollow plate according to one embodiment of the present invention; Figure 8 for Figure 7 Enlarged structural diagram at point B; Figure 9 This is a schematic diagram of the connection structure between plate a, plate b and laser welding head in one embodiment of the present invention.

[0016] Reference numerals: 1. Support cylinder; 2. Conveyor tray; 3. Vertical plate; 4. Hollow plate; 5. Telescopic component a; 6. Outer shell; 7. Plate c; 8. Sealing cover; 801. Correction groove; 802. Annular bayonet; 9. Box a; 10. Gear c; 11. Motor b; 12. Gear d; 13. Turntable a; 14. Positioning post; 15. Edge plate; 16. Connecting shaft; 17. Box b; 18. Spring; 19. Turntable b; 20. Gear b; 21. Gear a; 22. Motor a; 23. Motor c; 24. Gear f; 25. Gear ring; 26. Telescopic component b; 27. Sliding plate; 28. Laser welding head; 29. ​​Gear g; 30. Motor e; 31. Gear h; 32. Plate a; 33. Plate b; 34. Magnetic ring; 35. Magnetic plate; 36. Laser pointer. Detailed Implementation

[0017] Example 1, as Figures 1-4 and Figure 6 As shown, the present invention proposes an automotive parts welding production apparatus, which includes a conveying mechanism, a carrier mechanism, and a welding mechanism. The conveying mechanism is located on the ground for circumferentially conveying flanges. The conveying mechanism includes a support cylinder 1, a support plate, a motor c23, a conveying plate 2, a gear ring 25, and a gear f24. The support plate is located at the top of the support cylinder 1 (the top of the support plate has multiple rolling grooves, and the rolling grooves contain ball bearings b, which can significantly reduce the friction between the conveying plate 2 and the support plate). The gear ring 25 is connected to the bottom end of the conveying plate 2. The gear ring 25 is rotatably connected to the inner wall of the support cylinder 1. The motor c23 is located inside the support cylinder 1, and its output end is connected to the gear f24. The gear f24 meshes with the gear ring 25. An inspection port is provided on the support cylinder 1, and a door panel is hinged to the side wall of the inspection port for easy maintenance of the components inside the support cylinder 1. It should be noted that, referring to Figure 1 Taking clockwise as a reference, the position of the welding mechanism is the welding station, and the next station is the operation station.

[0018] The carrier mechanism has multiple sets arranged circumferentially on the conveying mechanism; the carrier mechanism includes a box a9, a box b17, a turntable a13, a turntable b19, a motor a22, a docking shaft 16, a telescopic component a5 (including but not limited to cylinders and other devices), a rotating part, and a sealing cover 8; the turntable a13 is rotatably mounted on the inner wall of the box a9, and the turntable a13 has multiple circular openings. A positioning post 14 is connected to the center of the turntable a13 (the positioning post 14 is perfectly matched with the center hole of the flange; the positioning post 14 is used to insert into the center hole of the flange, making it easy to place the flange at the center of the turntable a13); an edge plate 15 is connected to the top of the box b17; the edge plate 15 and The inner wall of box a9 is slidably connected, and the edge plate 15 is connected to the inner bottom end of box a9 via spring 18; the inner wall of the edge plate 15 is rotatably connected to a turntable b19; multiple docking shafts 16 are provided and circumferentially distributed on the turntable b19 (the docking shafts 16 can be adapted to the holes and nuts on the flange, and when the docking shafts 16 pass through the holes and nuts, the outer surface of the docking shafts 16 is in contact with the inner wall of the holes and the inner wall of the nuts), and a rolling groove is provided at the top of the docking shafts 16; a ball a is rolled in the rolling groove (the setting of the ball a can reduce the friction between the top of the docking shaft 16 and the turntable a13, the flange and the bottom of the sealing cover 8); the motor a22 is located inside box b17. The side is connected to the turntable b19 for transmission, and the bottom end of the turntable b19 is connected to the gear b20; with clockwise as a reference, the position of the welding mechanism is the welding station, and the next station is the operation station; the conveyor plate 2 is provided with a magnetic suction plate 35; the gear b20 is provided with a magnetic suction ring 34; the magnetic suction plate 35 is located below the operation station to magnetically attract the magnetic suction ring 34, so that the box b17 moves down and compresses the spring 18; the gear b20 is provided with a magnetic suction ring 34; the output end of the motor a22 is connected to the gear a21; the gear b20 meshes with the gear a21 (the radius of the gear b20 is larger than the radius of the gear a21, so that the motor a22 slowly drives the turntable b19 to rotate, so that (The docking shaft 16 has sufficient reaction time to insert into the circular opening of the turntable a13); multiple telescopic components a5 are provided and circumferentially distributed on the outer circumferential surface of the box a9; the output end of the telescopic component a5 is connected to the rotating part; the rotating part is connected to the sealing cover 8; the bottom end of the sealing cover 8 is provided with a correction groove 801; the inner wall of the correction groove 801 is an arc-shaped surface, which is used to push the nut to move; an annular latch 802 is provided on the arc-shaped surface, and the inner wall of the annular latch 802 is provided with a rubber layer; the inner wall of the correction groove 801 is provided with a laser pointer 36 (the laser pointer 36 emits a beam of light to help the staff confirm the position of the correction groove 801 and to make it easy to roughly adjust the correction groove 801 above the nut); The welding mechanism includes a vertical plate 3, a drive unit, plate a32, plate b33, and a laser welding head 28; the vertical plate 3 is located on one side of the conveying mechanism; the drive unit is located on the vertical plate 3; plate a32 is rotatably located on the drive unit; plate b33 is connected to plate a32; the laser welding head 28 is connected to plate b33 (plate b33 is also equipped with a gas pipe for spraying protective gas).

[0019] In this embodiment, the flange to be welded is placed on the turntable a13, with the positioning pin 14 passing through the center hole on the flange, ensuring that the flange is placed at the center of the turntable a13; then, the nut is placed on the flange and located near the hole; the telescopic component a5 drives the rotating part to move downward, thereby driving the sealing cover 8 to move downward, and the correction groove 801 at the bottom of the sealing cover 8 pushes the nut, and the arc-shaped surface of the inner wall of the correction groove 801 pushes the nut towards the center of the correction groove 801 until the nut is in the correction groove 801. At the center position, the nut and the hole on the flange are on the same circumference. Then, the motor a22 drives the gear a21 to rotate, the gear a21 drives the gear b20 to rotate slowly, the gear b20 drives the turntable b19 to rotate slowly, and thus drives the docking shaft 16 to move in a circular motion. When the carrier mechanism moves away from the operating position with the rotation of the conveyor plate 2, the magnetic ring 34 on the gear b20 moves away from the magnetic plate 35, and the magnetic plate 35 no longer magnetically attracts the magnetic ring 34 downward. Under the action of the spring 18, it will drive the box b 17 moves upward, which in turn drives the docking shaft 16 to move upward, so that the top of the docking shaft 16 abuts the bottom of the turntable a13. When the docking shaft 16 rotates to the round opening on the turntable a13, under the action of the spring force 18, the docking shaft 16 inserts into the inside of the round opening and drives the turntable a13 to rotate. When the round opening on the turntable a13 aligns with the hole on the flange, the docking shaft 16 will insert into the hole on the flange and drive the flange to rotate together. Similarly, when the hole on the flange aligns with the nut, the docking shaft 16 will insert into the nut (at this time, because the nut is stuck in the correction groove 801, the docking shaft 16 cannot drive it to rotate, so the motor a22 cannot drive the gear b20 to rotate. The motor a22 has a self-protection function and automatically shuts off after sensing resistance. This is existing technology, and its specific principle will not be elaborated here). This realizes the function of aligning multiple holes on the flange with the nut at the same time, without the need for alignment one by one and with extremely high efficiency, which significantly improves the laser welding efficiency between the nut and the flange and the production efficiency of automotive parts.

[0020] When the carrier mechanism rotates to the welding station, the telescopic component a5 first moves the sealing cover 8 upward and away from the box a9. Then, the motor a22 works again, causing the turntable b19 to reset. The turntable b19 drives the turntable a13, flange, and nut to rotate and reset to the initial position via the docking shaft 16 (so that the welding point of one of the nuts and the flange is directly opposite the welding mechanism). The drive unit drives the laser welding head 28 to move and approach the welding point of the nut and the flange. The laser welding head 28 is used to weld the nut onto the flange. After the nut is welded, the motor a22 drives the turntable b19 to rotate (the motor a22 will automatically work after the preset welding time is up), which in turn causes the flange to rotate, so that the nut at the next position rotates to the laser welding head 28. This process is repeated to complete the welding of all the nuts on the flange. Afterward, the conveying mechanism continues to work, causing the carrier mechanism to carry the welded flange back to the operating station.

[0021] It is worth noting that the surface of turntable a13 is coated with a nano-ceramic coating, which can greatly reduce the friction between turntable a13 and flange, reduce flange wear, and prevent turntable a13 from driving flange to rotate under friction. This ensures that turntable a13 and flange can rotate relative to each other, so that the round opening on turntable a13 can be aligned with the hole on flange.

[0022] Example 2, as Figures 7-9 As shown, the automotive parts welding production apparatus proposed in this invention, compared with Embodiment 1, further includes a drive unit. The drive unit includes a hollow plate 4, a sliding plate 27, a telescopic component b26 (including but not limited to cylinders and other devices), a motor e30, a gear g29, and a gear h31. The hollow plate 4 is connected to the vertical plate 3. The sliding plate 27 is slidably disposed within the hollow plate 4. The telescopic component b26 is disposed within the hollow plate 4 and connected to the sliding plate 27. Plate a32 is rotatably connected to the sliding plate 27 via a rotating shaft b. The gear h31 is connected to the rotating shaft b. The motor e30 is disposed on the sliding plate 27 and its output end is connected to the gear g29. The gear h31 meshes with the gear g29.

[0023] In this embodiment, the telescopic component b26 drives the sliding plate 27 to move, and the sliding plate 27 drives the laser welding head 28 to move and approach the welding point between the nut and the flange; the motor e30 drives the gear g29 to rotate, the gear g29 drives the gear h31 to rotate, the gear h31 drives the plate a32 to rotate, the plate a32 drives the plate b33 to perform a circular motion, and the plate b33 drives the laser welding head 28 to perform a circular motion, thereby realizing the welding function of the welding point between the nut and the flange.

[0024] Example 3, as Figure 5As shown, the automotive parts welding production apparatus proposed in this invention, compared with Embodiment 2, further includes a rotating part, which includes a plate c7, a housing 6, a motor b11, a gear c10, and a gear d12; the plate c7 is connected to the telescopic component a5; the housing 6 is disposed on the plate c7; the sealing cover 8 is rotatably connected to the plate c7 via a rotating shaft a; the gear c10 is connected to the rotating shaft a; the motor b11 is disposed inside the housing 6 and its output end is connected to the gear d12; the gear d12 meshes with the gear c10.

[0025] In this embodiment, motor b11 drives gear d12 to rotate, gear d12 drives gear c10 to rotate slowly, and gear c10 with sealing cover 8 rotates slowly to facilitate adjustment of the position of the correction groove 801, so that the correction groove 801 can be roughly above the nut.

[0026] After welding is completed, when the carrier mechanism carries the welded flange to the operating position, the operator can open the telescopic component a5. The telescopic component a5 drives the sealing cover 8 to move down, so that the correction groove 801 is locked on the nut again. Then, the motor b11 is turned on, and the motor b11 drives the sealing cover 8 to rotate, thereby driving the nut to rotate. The nut drives the flange to rotate, which can test whether the nut welding is stable.

[0027] Example 4, please refer to Figures 1-9 The present invention also proposes a welding production method for automotive parts, employing the welding production apparatus described in any one of Embodiments 1 to 3 above, comprising the following steps: S1. Preparation: One worker needs to stand at the operating position. When the carrier mechanism rotates to the operating position, place the flange on the turntable a13 and place the nut near the hole of the flange. S2. Alignment Correction: After the flange and nut are placed, the operator activates the telescopic component a5 and the motor b11. The telescopic component a5 moves the sealing cover 8 downwards. During the downward movement, the position of the sealing cover 8 is adjusted by the motor b11 according to the laser beam emitted by the laser pointer 36, so that the alignment groove 801 is approximately above the nut. Then, the conveying mechanism continues to transport the carrier mechanism in a circular motion. After the sealing cover 8 moves downwards, the arc-shaped surface of the alignment groove 801 will obliquely press the edge of the nut, pressing the nut against the hole on the flange. Located on the same circumference; motor a22 drives turntable b19 to rotate slowly. When the docking shaft 16 rotates to the round opening on turntable a13, under the action of spring 18, the docking shaft 16 passes through the round opening and drives turntable a13 to rotate. When the round opening on turntable a13 is aligned with the hole on the flange, the docking shaft 16 will pass through the hole, causing turntable a13 to drive the flange to rotate. When the hole on the flange is aligned with the nut, the docking shaft 16 will pass through the nut, automatically realizing the function of aligning the nut with the flange. S3. Welding operation: When the carrier mechanism rotates to the bottom of the welding mechanism, the conveying mechanism stops working, and the welding mechanism performs welding operations on the nut and flange. After the welding is completed, the conveying mechanism transports the carrier mechanism to the operating position again, and the operator can remove the welded flange and nut.

[0028] It should be noted that all electronic devices in this patent are controlled by an external controller to operate in an orderly manner.

[0029] In summary, the motor C23 drives the gear F24 to rotate clockwise intermittently, the gear F24 drives the gear ring 25 to rotate clockwise intermittently, the gear ring 25 drives the conveyor plate 2 to rotate clockwise intermittently, and the conveyor plate 2 drives the carrier mechanism to rotate clockwise intermittently. When the carrier mechanism rotates to the operating position, the magnetic plate 35 will magnetically attract the magnetic ring 34 downward, causing the box body B17 to move down and thus driving the docking shaft 16 to move down to the inside of the box body B17.

[0030] Then, the worker places the flange to be welded on the turntable a13 and makes the positioning pin 14 pass through the center hole on the flange (the positioning pin 14 fits the center hole exactly), ensuring that the flange is placed in the center of the turntable a13; then the nut is placed on the flange and located near the round opening; the worker turns on the motor b11 to drive the gear d12 to rotate, the gear d12 drives the gear c10 to rotate slowly, the gear c10 drives the sealing cover 8 to rotate slowly, and with the beam of the laser pointer 36, the correction groove 801 is rotated roughly above the nut and the motor b11 is turned off.

[0031] The telescopic component a5 moves plate c7 downward, which in turn moves the sealing cover 8 downward. The correction groove 801 at the bottom of the sealing cover 8 pushes the nut, and the arc-shaped inner wall of the correction groove 801 pushes the nut towards the center of the correction groove 801 until the nut is at the center position. At this point, the nut and the hole on the flange are on the same circumference. Then, the external controller motor a22 drives gear a21 to rotate, gear a21 drives gear b20 to rotate slowly, gear b20 drives turntable b19 to rotate slowly, which in turn drives the docking shaft 16 to rotate. When the carrier mechanism moves away from the operating position with the rotation of the conveyor plate 2, the magnetic ring 34 on gear b20 moves away from the magnetic plate 35, and the magnetic plate 35 no longer magnetically attracts the magnetic ring 34 downward. Under the elastic force of the spring 18, the box b17 moves upward, which in turn drives the docking shaft 16 to move upward, so that the top of the docking shaft 16 abuts against the turntable a13. At the bottom, when the mating shaft 16 rotates to the round opening on the turntable a13, under the action of the spring 18, the mating shaft 16 inserts into the inside of the round opening and drives the turntable a13 to rotate. When the round opening on the turntable a13 aligns with the hole on the flange, the mating shaft 16 will insert into the hole on the flange and drive the flange to rotate together. Similarly, when the hole on the flange aligns with the nut, the mating shaft 16 will insert into the nut (at this time, because the nut is stuck in the correction groove 801, the mating shaft 16 cannot drive it to rotate, so the motor a22 cannot drive the gear b20 to rotate. The motor a22 has a self-protection function and automatically shuts off after sensing resistance. This is existing technology, and its specific principle will not be elaborated here). This realizes the function of aligning multiple holes on the flange with the nut at the same time, without the need for alignment one by one and with extremely high efficiency, significantly improving the efficiency of laser welding and the production efficiency of automotive parts.

[0032] When the conveyor plate 2 transports the carrier mechanism to the welding station, the conveyor plate 2 stops rotating. At this time, the external controller first moves the sealing cover 8 upward and away from the box a9. Then, the motor a22 works again, causing the turntable b19 to reset. The turntable b19 drives the turntable a13, flange, and nut to rotate and reset to their initial positions via the docking shaft 16 (so that the welding point of one of the nuts and the flange is directly opposite the welding mechanism). The telescopic component b26 drives the sliding plate 27 to move. The sliding plate 27 drives the laser welding head 28 to move and approach the welding point between the nut and the flange. The motor e30 drives the gear g29 to rotate, and the gear g29 drives the gear h. Gear h31 rotates, causing plate a32 to rotate, which in turn causes plate b33 to rotate in a circular motion. Plate b33 then causes laser welding head 28 to rotate in a circular motion, thus achieving the welding function between the nut and the flange. After the nut is welded, motor a22 drives turntable b19 to rotate (motor a22 will automatically start after the preset welding time), which in turn causes the flange to rotate, allowing the next nut to rotate to the laser welding head 28. This process is repeated to achieve the welding of all nuts on the flange. Afterward, the conveying mechanism continues to work, causing the carrier mechanism to carry the welded flange back to the operating position.

[0033] When the carrier mechanism rotates the welded flange to the operating position, the operator can open the telescopic component a5. The telescopic component a5 moves the sealing cover 8 down, so that the correction groove 801 is locked onto the nut again. Then, the motor b11 is turned on, and the motor b11 drives the sealing cover 8 to rotate (at this time, the output power of the motor b11 can be increased to increase the speed, so that the nut can drive the flange to rotate at high speed and increase the centrifugal force). This drives the nut to rotate, and the nut drives the flange to rotate. This can test whether the nut welding is stable. Afterwards, the successfully welded and unsuccessful products are taken out and recycled separately, and then a new flange and nut are placed.

[0034] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A welding production apparatus for automotive parts, characterized in that, include: A conveying mechanism, located on the ground, for circumferentially conveying flanges; The carrier mechanism is provided with multiple sets of components distributed circumferentially on the conveying mechanism; the carrier mechanism includes box a (9), box b (17), turntable a (13), turntable b (19), motor a (22), docking shaft (16), telescopic component a (5), rotating part and sealing cover (8); the turntable a (13) is rotatably mounted on the inner wall of box a (9), and multiple circular openings are provided on the turntable a (13), and a positioning post (14) is connected to the center of the turntable a (13); the top of box b (17) is connected to an edge plate (15); the edge plate (15) is slidably connected to the inner wall of box a (9), and the edge plate (15) is connected to the inner bottom end of box a (9) through a spring (18); the edge plate (19) is slidably connected to the inner wall of box a (9), and the edge plate (15) is connected to the inner bottom end of box a (9) through a spring (18); the edge plate (19) is slidably connected to the inner wall of box a (9), and the edge plate (19) is connected to the inner bottom end of box a (9) through a spring (18); the edge plate (19) is slidably connected to the inner wall of box a (9), and the edge plate (19) is slidably connected to the inner wall of box a (9). 5) The inner wall is rotatably connected to a turntable b (19); multiple docking shafts (16) are provided and circumferentially distributed on the turntable b (19); the docking shaft (16) can be adapted to the holes and nuts on the flange. When the docking shaft (16) passes through the holes and nuts, the outer surface of the docking shaft (16) is in contact with the inner wall of the holes and the inner wall of the nuts. A rolling groove is provided at the top of the docking shaft (16); a ball a is rolled in the rolling groove; a motor a (22) is located inside the box b (17) and is connected to the turntable b (19) for transmission; multiple telescopic components a (5) are provided and circumferentially distributed on the outer circumferential surface of the box a (9). The output end of the telescopic component a (5) is connected to the rotating part; the rotating part is connected to the sealing cover (8); The welding mechanism includes a vertical plate (3), a drive unit, plate a (32), plate b (33), and a laser welding head (28); the vertical plate (3) is located on one side of the conveying mechanism; the drive unit is located on the vertical plate (3); plate a (32) is rotatably located on the drive unit; plate b (33) is connected to plate a (32); and the laser welding head (28) is connected to plate b (33). The bottom end of the sealing cover (8) is provided with a correction groove (801); the inner wall of the correction groove (801) is an arc surface, which is used to push the nut to move; an annular buckle (802) is provided on the arc surface, and the inner wall of the annular buckle (802) is provided with a rubber layer; the inner wall of the correction groove (801) is provided with a laser pen (36).

2. The automotive parts welding production apparatus according to claim 1, characterized in that, The bottom end of turntable b (19) is connected to gear b (20); the output end of motor a (22) is connected to gear a (21); gear b (20) meshes with gear a (21).

3. The automotive parts welding production apparatus according to claim 1, characterized in that, The rotating part includes plate c (7), housing (6), motor b (11), gear c (10) and gear d (12); plate c (7) is connected to telescopic component a (5); housing (6) is located on plate c (7); sealing cover (8) is rotatably connected to plate c (7) via rotating shaft a; gear c (10) is connected to rotating shaft a; motor b (11) is located inside housing (6) and its output end is connected to gear d (12); gear d (12) meshes with gear c (10).

4. The automotive parts welding production apparatus according to claim 2, characterized in that, The conveying mechanism includes a support cylinder (1), a support plate, a motor c (23), a conveying plate (2), a gear ring (25), and a gear f (24); the support plate is located at the top of the support cylinder (1); the gear ring (25) is connected to the bottom end of the conveying plate (2); the gear ring (25) is rotatably connected to the inner wall of the support cylinder (1); the motor c (23) is located inside the support cylinder (1) and its output end is connected to the gear f (24); the gear f (24) meshes with the gear ring (25).

5. The automotive parts welding production apparatus according to claim 4, characterized in that, With clockwise as a reference, the position of the welding mechanism is the welding station, and the next station is the operation station; the conveyor plate (2) is provided with a magnetic suction plate (35); the gear b (20) is provided with a magnetic suction ring (34); the magnetic suction plate (35) is located below the operation station and is used to magnetically attract the magnetic suction ring (34), so that the box b (17) moves down and compresses the spring (18).

6. The automotive parts welding production apparatus according to claim 1, characterized in that, The drive unit includes a hollow plate (4), a sliding plate (27), a telescopic component b (26), a motor e (30), a gear g (29), and a gear h (31); the hollow plate (4) is connected to the upright plate (3); the sliding plate (27) is slidably disposed inside the hollow plate (4); the telescopic component b (26) is disposed inside the hollow plate (4) and connected to the sliding plate (27); plate a (32) is rotatably connected to the sliding plate (27) through a rotating shaft b; the gear h (31) is connected to the rotating shaft b; the motor e (30) is disposed on the sliding plate (27) and its output end is connected to the gear g (29); the gear h (31) meshes with the gear g (29).

7. A method for welding automotive parts, using the welding production apparatus according to any one of claims 2-6, characterized in that, Includes the following steps: S1. Preparation: A worker needs to stand at the operating position. When the carrier mechanism rotates to the operating position, place the flange on the turntable a (13) and place the nut near the hole of the flange. S2. Alignment Correction: After the flange and nut are placed, the operator activates the telescopic component a (5) and motor b (11). The telescopic component a (5) moves the sealing cover (8) down. During the downward movement, the position of the sealing cover (8) is adjusted by the motor b (11) according to the laser beam emitted by the laser pointer (36), so that the alignment groove (801) is roughly above the nut. Then the conveying mechanism continues to convey the carrier mechanism in a circular motion. After the sealing cover (8) moves down, the arc surface of the alignment groove (801) will obliquely squeeze the edge of the nut, squeezing the nut to the hole on the flange. On the same circumference; motor a (22) drives turntable b (19) to rotate slowly. When the docking shaft (16) rotates to the round opening on turntable a (13), under the action of spring (18), the docking shaft (16) passes through the round opening and drives turntable a (13) to rotate. When the round opening on turntable a (13) is aligned with the hole on the flange, the docking shaft (16) will pass through the hole, causing turntable a (13) to drive the flange to rotate. When the hole on the flange is aligned with the nut, the docking shaft (16) will pass through the nut, automatically realizing the function of aligning the nut with the flange. S3. Welding operation: When the carrier mechanism rotates to the bottom of the welding mechanism, the conveying mechanism stops working, and the welding mechanism performs welding operations on the nut and flange. After the welding is completed, the conveying mechanism transports the carrier mechanism to the operating position again, and the operator can remove the welded flange and nut.

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