Automobile part welding production device and production method

Abstract

The invention relates to the technical field of part welding, in particular to an automobile part welding production device and method. The device 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 turntable a, a turntable b, a motor a, a butt joint shaft, a telescopic part a, a rotating part and a sealing cover; the turntable a is rotationally arranged on the inner wall of the box body a, and the top end of the box body b is connected with an edge plate; the edge plate is in sliding connection with the box body a, and 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 a turntable b; the butt joint shafts are circumferentially distributed on the turntable b; the motor a is arranged on the inner side of the box body b and is in transmission connection with the turntable b; the telescopic part a is connected to the peripheral surface of the box body a and is connected with the rotating part; the rotating part is connected with the sealing cover. The function that multiple holes in the flange plate are synchronously aligned with the nut is achieved, and the laser welding efficiency between the flange plate and the nut block is remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of component welding, in particular to an automobile component welding production device and a production method. BACKGROUND

[0002] A welding equipment for automobile component production is disclosed in Chinese Patent No. CN120326258B; a nut sleeve is connected to the positioning frame, then the positioning frame in the gathered state is butted against the sheet metal hole of the sheet metal part, then hydraulic oil is injected into the driving unit through the oil delivery system to work, the hydraulic oil enters the transfer cavity and the auxiliary pipe in sequence through the delivery pipe, the hydraulic oil entering the transfer cavity pushes the telescopic shafts in the four groups of telescopic cavities to move outward synchronously, thereby enabling the four groups of positioning frames to perform outward expansion simultaneously, the limiting assemblies at the ends of each group of positioning frames extend outward correspondingly, and the four groups of positioning frames expanding outward synchronously can realize the centering operation of the nut and the sheet metal part, ensure that the centers of the two butted parts are on the same axis, effectively avoid misalignment and deflection, improve the butting precision, and ensure the welding effect.

[0003] However, the above-mentioned prior art has the following defects: the automatic alignment function of one sheet metal hole on the sheet metal part and the nut can only be realized each time, for sheet metal parts such as flanges (the flanges required by exhaust pipe heat shields and other components cannot be directly tapped due to insufficient strength, and the sheet metal is too thin to withstand repeated disassembly and assembly, and the welded nut provides a high-strength and detachable threaded connection point), the number of sheet metal holes thereon is large, and if they are aligned one by one, the welding efficiency will be dramatically reduced, thereby seriously affecting the production efficiency of automobile components. SUMMARY

[0004] The present application aims to solve the problems in the background art and provides an automobile component welding production device and a production method.

[0005] The technical scheme of the present application is as follows: an automobile component welding production device, comprising: a conveying mechanism arranged on the ground for circumferential conveying of flanges; a carrier mechanism comprising a plurality of groups of box bodies a, box bodies b, rotating discs a, rotating discs b, motors a, butt joint shafts, telescopic components a, rotating parts, and sealing covers, and being circumferentially distributed on the conveying mechanism; the rotating disc a is rotationally arranged on the inner wall of the box body a, a plurality of circular openings are formed in the rotating disc a, and a positioning column is connected to the center of the rotating disc a; the top end of the box body b is connected with an edge plate; the edge plate is slidingly connected with the inner wall of the box body a, and 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; a plurality of butt joint shafts are circumferentially distributed 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; a plurality of telescopic components a are circumferentially distributed on the outer circumferential surface of the box body a, the output end of the telescopic component a is connected with the rotating part, and the rotating part is connected with the sealing cover. The welding mechanism comprises a vertical plate, a driving part, a plate a, a plate b and a laser welding head; the vertical plate is arranged on one side of the conveying mechanism; the driving part is arranged on the vertical plate; the plate a is rotatably arranged on the driving part; the plate b is connected with the plate a; and the laser welding head is connected with the plate b.

[0006] Preferably, the bottom end of the sealing cover is provided with a deviation correction groove; the inner wall of the deviation correction groove is an arc surface for pushing and moving the nut; the arc surface is provided with an annular clamping opening, and the inner wall of the annular clamping opening is provided with a rubber layer; and the inner wall of the deviation correction groove is provided with a laser pen.

[0007] Preferably, the bottom end of the rotating disc b is connected with a gear b; the output end of the motor a is connected with a gear a; and the gear b is engaged with the gear a.

[0008] Preferably, the top end of the abutting shaft is provided with a rolling groove; and the rolling groove is rolling provided with a ball a.

[0009] Preferably, the rotating part comprises a plate c, a shell, a motor b, a gear c and a gear d; the plate c is connected with the telescopic part a; the shell is arranged on the plate c; the sealing cover is rotatably connected with the plate c through the rotating shaft a; the gear c is connected with the rotating shaft a; the motor b is arranged in the shell and the output end thereof is connected with the gear d; and the gear d is engaged with the gear c.

[0010] Preferably, the conveying mechanism comprises a supporting cylinder, a supporting disc, a motor c, a conveying disc, a gear ring and a gear f; the supporting disc is arranged at the top end of the supporting cylinder; the gear ring is connected with the bottom end of the conveying disc; the gear ring is rotatably connected with the inner wall of the supporting cylinder; the motor c is arranged in the supporting cylinder and the output end thereof is connected with the gear f; and the gear f is engaged with the gear ring.

[0011] Preferably, the conveying disc is provided with a magnetic attraction plate; and the gear b is provided with a magnetic attraction ring.

[0012] Preferably, the driving part comprises a hollow plate, a sliding plate, a telescopic part b, a motor e, a gear g and a gear h; the hollow plate is connected with the vertical plate; the sliding plate is slidingly arranged in the hollow plate; the telescopic part b is arranged in the hollow plate and connected with the sliding plate; the plate a is rotatably connected with the sliding plate through the rotating shaft b; the gear h is connected with the rotating shaft b; the motor e is arranged on the sliding plate and the output end thereof is connected with the gear h; and the gear h is engaged with the gear g.

[0013] The application further provides an automobile part welding production method, which adopts the welding production device and comprises the following steps: S1, preparation: one staff is required to stand at the operation station, when the carrier mechanism rotates to the operation station, the flange plate is placed on the rotating disc a and the nut is placed near the round opening of the flange plate; S2, deviation alignment: after the flange plate and nut are placed, the worker starts the telescopic part a and motor a, so that the sealing cover is driven to move downward, in the moving process, the position of the sealing cover is adjusted according to the laser beam emitted by the laser pen, so that the deviation groove is roughly located above the nut, then the conveying mechanism continues to convey the carrier mechanism to make circular motion, after the sealing cover moves downward, the arc surface of the deviation groove will obliquely extrude the edge of the nut, so that the nut is extruded to be on the same circumferential line with the hole on the flange plate; the motor a drives the rotating disc b to rotate slowly, when the butt joint shaft rotates to the round hole on the rotating disc a, under the action of the spring elastic force, the butt joint shaft penetrates the round hole and drives the rotating disc a to rotate, when the round hole on the rotating disc a is aligned with the hole on the flange plate, the butt joint shaft will penetrate the hole; so that the rotating disc a drives the flange plate to rotate, when the hole on the flange plate is aligned with the nut, the butt joint shaft will penetrate the nut, and the function of automatically aligning the nut with the flange plate is realized. S3, welding operation: when the carrier mechanism rotates to below the welding mechanism, the conveying mechanism stops working, and the welding mechanism performs welding operation on the nut and the flange plate; after welding is completed, the conveying mechanism again conveys the carrier mechanism to the operation station, and the worker can take away the welded flange plate and nut.

[0014] Compared with the prior art, the above technical scheme of the present application has the following beneficial technical effects: By arranging the conveying mechanism and the carrier mechanism, the flange plate and the nut to be welded are placed on the carrier mechanism, and in the conveying process of the carrier mechanism by the conveying mechanism, the function of automatically synchronously aligning the multiple holes on the flange plate with the nut is realized, without the need for alignment one by one, so that the laser welding efficiency between the flange plate and the nut block is significantly improved, and the production efficiency of automobile parts is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A perspective view of an embodiment of the present application is shown; Figure 2 A cross-sectional structure schematic view of the carrier mechanism in an embodiment of the present application is shown; Figure 3 A cross-sectional structure schematic view of the rotating part in an embodiment of the present application is shown; Figure 2 A structure schematic view of the sealing cover in an embodiment of the present application is shown; Figure 4 A structure schematic view of the sealing cover in an embodiment of the present application is shown; Figure 5 A cross-sectional structure schematic view of the rotating part in an embodiment of the present application is shown; Figure 6 An assembly structure schematic view of the conveying disc in a cross-sectional state and the supporting cylinder in an embodiment of the present application is shown; Figure 7 A structure schematic view of the welding mechanism in a hollow plate cross-sectional state in an embodiment of the present application is shown; Figure 8 For Figure 7 Amplification structure schematic diagram at B in the middle; Figure 9 Connection structure schematic diagram of plate a, plate b and laser welding joint in an embodiment of the present application.

[0016] Reference signs: 1, support cylinder; 2, conveying disc; 3, vertical plate; 4, hollow plate; 5, telescopic part a; 6, shell; 7, plate c; 8, sealing cover; 801, deviation correction groove; 802, annular bayonet; 9, box body a; 10, gear c; 11, motor b; 12, gear d; 13, turntable a; 14, positioning column; 15, edge plate; 16, butt joint shaft; 17, box body 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 part b; 27, sliding plate; 28, laser welding joint; 29, gear g; 30, motor e; 31, gear h; 32, plate a; 33, plate b; 34, magnetic attraction ring; 35, magnetic attraction plate; 36, laser pen. DETAILED DESCRIPTION

[0017] Embodiment one, as shown in Figures 1-4 And Figure 6 The present application proposes an automobile part welding production device, which comprises a conveying mechanism, a carrier mechanism and a welding mechanism; The conveying mechanism is arranged on the ground for circumferential conveying of the flange plate; the conveying mechanism comprises a support cylinder 1, a support disc, a motor c 23, a conveying disc 2, a gear ring 25 and a gear f 24; the support disc is arranged at the top end of the support cylinder 1 (a plurality of rolling grooves are formed at the top end of the support disc, and a plurality of ball bearings b are arranged in the rolling grooves, which can significantly reduce the friction between the conveying disc 2 and the support disc); the gear ring 25 is connected with the bottom end of the conveying disc 2; the gear ring 25 is rotationally connected with the inner wall of the support cylinder 1; the motor c 23 is arranged inside the support cylinder 1 and the output end thereof is connected with the gear f 24; the gear f 24 is engaged with the gear ring 25; a maintenance opening is formed in the support cylinder 1, and a door plate is hinged to the side wall of the maintenance opening, which facilitates the maintenance of the parts in the support cylinder 1; It should be noted that, with reference to Figure 1 With the clockwise direction as the reference, the position of the welding mechanism is the welding station, and the next station is the operation station.

[0018] The carrier mechanism comprises 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, with a positioning post 14 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); the top of the box b17 is connected to... Edge plate 15; edge plate 15 is slidably connected to the inner wall of box a9, and edge plate 15 is connected to the inner bottom end of box a9 by spring 18; turntable b19 is rotatably connected to the inner wall of edge plate 15; multiple mating shafts 16 are provided and circumferentially distributed on turntable b19 (the mating shafts 16 are just adapted to the holes and nuts on the flange, that is, when the mating shafts 16 pass through the holes and nuts, the outer surface of the mating shafts 16 is in contact with the inner wall of the holes and the inner wall of the nuts), and a rolling groove is opened at the top of the mating shafts 16; rolling balls a are rolled in the rolling groove (the setting of rolling balls a can reduce the friction between the top of the mating shafts 16 and turntable a13, flange and sealing cover). 8. Friction between the bottom ends); Motor a22 is located inside the box b17 and is connected to the turntable b19 for transmission. The bottom end of the turntable b19 is connected to gear b20; The conveyor plate 2 is equipped with a magnetic suction plate 35 (the magnetic suction plate 35 is located below the operating position to magnetically attract the magnetic suction ring 34, thereby causing the box b17 to move down and compress the spring 18); Gear b20 is equipped with a magnetic suction ring 34; The output end of motor a22 is connected to gear a21; Gear b20 meshes with gear a21 (the radius of gear b20 is larger than the radius of gear a21, so that motor a22 slowly drives the turntable b19 to rotate, so that the docking shaft 16 has sufficient... (Sufficient reaction time is inserted into the round opening of turntable a13); multiple telescopic components a5 are provided and circumferentially distributed on the outer circumferential surface of box a9; the output end of 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 for pushing the nut to move; an annular bayonet 802 is provided on the arc-shaped surface, and the inner wall of the annular bayonet 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 and the positioning column 14 penetrates 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 near the round port; the rotating part is driven downward by the telescopic part a5 to drive the sealing cover 8 downward, and the nut is pushed by the deviation correction groove 801 at the bottom end of the sealing cover 8. The arc surface on the inner wall of the deviation correction groove 801 will push the nut to the center of the deviation correction groove 801, until the nut is at the center position of the deviation correction groove 801, at this time, the nut and the hole on the flange are on the same circular line; 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 then drives the butt joint shaft 16 to rotate circularly. When the carrier mechanism moves away from the operator station with the rotation of the conveying disc 2, the magnetic attraction ring 34 on the gear b20 moves away from the magnetic attraction plate 35, and the magnetic attraction plate 35 no longer magnetically attracts the magnetic attraction ring 34. Under the action of the spring 18, the box body b17 is driven to move upward, and then the butt joint shaft 16 is driven to move upward, so that the top end of the butt joint shaft 16 abuts against the bottom end of the turntable a13. When the butt joint shaft 16 rotates to the round port on the turntable a13, under the action of the spring 18, the butt joint shaft 16 is inserted into the inside of the round port and drives the turntable a13 to rotate. When the round port on the turntable a13 is aligned with the hole on the flange, the butt joint shaft 16 is inserted into the hole on the flange and drives the flange to rotate; similarly, when the hole on the flange is aligned with the nut, the butt joint shaft 16 is inserted into the nut (at this time, the nut is clamped in the deviation correction groove 801, the butt joint shaft 16 cannot drive it to rotate, so that the motor a22 cannot drive the gear b20 to rotate. The motor a22 has a self-protection function and automatically shuts down after feeling the resistance. This is prior art, and its specific principle will not be described here). The function of aligning multiple holes on the flange with the nut at the same time is realized, without the need for one-by-one alignment and with extremely high efficiency, significantly improving the laser welding efficiency between the nut and the flange and the production efficiency of automobile 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 h31. 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 automobile part welding production device provided by the present application further comprises a rotating part compared with the second embodiment, the rotating part comprises a plate c7, a shell 6, a motor b11, a gear c10 and a gear d12; the plate c7 is connected with the telescopic part a5; the shell 6 is arranged on the plate c7; the sealing cover 8 is rotatably connected with the plate c7 through a rotating shaft a; the gear c10 is connected with the rotating shaft a; the motor b11 is arranged in the shell 6 and the output end thereof is connected with the gear d12; the gear d12 is engaged with the gear c10.

[0025] In the embodiment, the motor b11 drives 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, so that the position of the deviation rectifying groove 801 can be adjusted, and the deviation rectifying groove 801 can be approximately above the nut.

[0026] After the welding is completed, when the carrier mechanism carries the welded flange plate to rotate to the operating position, the staff can open the telescopic part a5, the telescopic part a5 drives the sealing cover 8 to move downward, so that the deviation rectifying groove 801 is clamped on the nut again, then the motor b11 is started, the motor b11 drives the sealing cover 8 to rotate, so that the nut is driven to rotate, and the flange plate is driven to rotate, so that whether the nut welding is stable can be tested.

[0027] In the embodiment, Figures 1-9 The present application further provides an automobile part welding production method, which adopts the welding production device in any one of the first to third embodiments and comprises the following steps. S1, preparation: one staff needs to be stationed at the operating position, when the carrier mechanism rotates to the operating position, the flange plate is placed on the rotating disc a13 and the nut is placed near the round opening of the flange plate; S2, deviation rectification alignment: after the flange plate and the nut are placed, the staff starts the telescopic part a5 and the motor a22, so that the sealing cover 8 is driven to move downward, during the moving process, the position of the sealing cover 8 is adjusted according to the laser beam emitted by the laser pen 36, so that the deviation rectifying groove 801 is approximately above the nut, then the conveying mechanism continues to convey the carrier mechanism to do the circular motion, after the sealing cover 8 moves downward, the arc surface of the deviation rectifying groove 801 will obliquely press the edge of the nut, so that the nut is pressed to be on the same circular line with the hole on the flange plate; the motor a22 drives the rotating disc b19 to rotate slowly, when the butt joint shaft 16 rotates to the round opening on the rotating disc a13, the butt joint shaft 16 penetrates the round opening and drives the rotating disc a13 to rotate under the elastic force of the spring 18, when the round opening on the rotating disc a13 is aligned with the hole on the flange plate, the butt joint shaft 16 will penetrate the hole; so that the rotating disc a13 drives the flange plate to rotate, when the hole on the flange plate is aligned with the nut, the butt joint shaft 16 will penetrate the nut, so that the function of automatically aligning the nut with the flange plate is realized; S3, welding operation: when the carrier mechanism rotates to the welding mechanism below, the conveying mechanism stops working, and the welding mechanism performs welding operation on the nut and flange plate; after welding is completed, the conveying mechanism again conveys the carrier mechanism to the operating station, and the staff can take down the welded flange plate and nut.

[0028] It should be noted that the electronic devices in the present patent are uniformly controlled by an external controller to work in order.

[0029] As described above, 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 conveying disc 2 to rotate clockwise intermittently, and the conveying disc 2 drives the carrier mechanism to rotate clockwise intermittently; when the carrier mechanism rotates to the operating station, the magnetic attraction plate 35 will be downwardly magnetically attracted to the magnetic attraction ring 34, so that the box body b17 moves downward to drive the butt joint shaft 16 to move downward to the inside of the box body b17.

[0030] Then the staff places the flange plate to be welded on the turntable a13 and makes the positioning column 14 penetrate through the center hole on the flange plate (the positioning column 14 is just adapted to the center hole), so as to ensure that the flange plate is placed at the center of the turntable a13; then the nut is placed on the flange plate and near the round port; the staff starts 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 the light beam emitted by the laser pen 36 is used to rotate the deviation correction groove 801 to above the nut and turn off the motor b11.

[0031] The sealing cover 8 is lowered by the telescopic component a5, and the nut is pushed by the deviation correction groove 801 at the bottom end of the sealing cover 8. The arc surface in the inner wall of the deviation correction groove 801 pushes the nut to the center of the deviation correction groove 801, until the nut is in the center position of the deviation correction groove 801, at this time, the nut is on the same circumferential line with the hole in the flange plate. Then the external controller motor a22 drives the gear a21 to rotate, the gear a21 drives the gear b20 to rotate slowly, the gear b20 drives the rotating disc b19 to rotate slowly and further drives the butt joint shaft 16 to rotate in a circle. When the carrier mechanism moves away from the operation station with the rotation of the conveying disc 2, the magnetic attraction ring 34 on the gear b20 moves away from the magnetic attraction plate 35, the magnetic attraction plate 35 no longer magnetically attracts the magnetic attraction ring 34, and the box body b17 is driven to move upward under the elastic force of the spring 18, and further drives the butt joint shaft 16 to move upward, so that the top end of the butt joint shaft 16 abuts against the bottom end of the rotating disc a13. When the butt joint shaft 16 rotates to the circular port on the rotating disc a13, the butt joint shaft 16 is inserted into the inside of the circular port and drives the rotating disc a13 to rotate under the elastic force of the spring 18. When the circular port on the rotating disc a13 is aligned with the hole in the flange plate, the butt joint shaft 16 is inserted into the hole in the flange plate and drives the flange plate to rotate. Similarly, when the hole in the flange plate is aligned with the nut, the butt joint shaft 16 is inserted into the nut (at this time, the nut is clamped in the deviation correction groove 801, the butt joint shaft 16 cannot drive it to rotate, the motor a22 cannot drive the gear b20 to rotate, the motor a22 has a self-protection function and is automatically turned off after feeling the resistance, which is a prior art and the specific principle is not described here), achieving the function of aligning multiple holes in the flange plate with the nut at the same time, without aligning one by one and with extremely high efficiency, significantly improving the laser welding efficiency and the production efficiency of automobile parts.

[0032] When the conveying disc 2 conveys the carrier mechanism to the welding station, the conveying disc 2 stops rotating, at this time, the external controller first drives the sealing cover 8 to move upward and away from the box body a9, then the motor a22 works again, so that the rotating disc b19 is reset, the rotating disc b19 drives the rotating disc a13, the flange plate and the nut to rotate and reset to the initial position (that is, the welding point of the nut and the flange plate is opposite to the welding mechanism) through the butt joint shaft 16, the telescopic part 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 plate; 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 do circular motion, the plate b33 drives the laser welding head 28 to do circular motion, realizing the welding function of the welding point between the nut and the flange plate, after the nut is welded here, the motor a22 will drive the rotating disc b19 to rotate (after the preset welding time is up, the motor a22 will work automatically), and then the flange plate is rotated, so that the nut at the next position is rotated to the laser welding head 28, and so on, realizing the welding work of all nuts on the flange plate; then, the conveying mechanism continues to work, so that the carrier mechanism carries the welded flange plate to rotate to the operating station again.

[0033] When the carrier mechanism carries the welded flange plate to rotate to the operating station, the worker can open the telescopic part a5, the telescopic part a5 drives the sealing cover 8 to move downward, so that the correction groove 801 is clamped on the nut again, then the motor b11 is opened, 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 rotating speed, so that the nut can drive the flange plate to rotate at high speed to increase the centrifugal force), so as to drive the nut to rotate, the nut drives the flange plate to rotate, and whether the nut is welded stably can be tested, then the products with successful and failed welding are taken out and recycled respectively, and then new flange plates and nuts can be placed again.

[0034] The embodiments of the application are described in detail above with reference to the drawings, but the application is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the application.

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 has multiple sets of components arranged circumferentially on the conveying mechanism; the carrier mechanism includes a box a (9), a box b (17), a turntable a (13), a turntable b (19), a motor a (22), a docking shaft (16), a telescopic component a (5), a rotating part, and a sealing cover (8); the turntable a (13) is rotatably mounted on the inner wall of the box a (9), and multiple circular openings are provided on the turntable a (13). A positioning post (14) is connected to the center of the turntable a (13); an edge plate (15) is connected to the top of the box b (17); the edge plate (15) and the box The inner wall of body a (9) is slidably connected, and the edge plate (15) is connected to the inner bottom end of body a (9) through spring (18); the inner wall of the edge plate (15) is rotatably connected to turntable b (19); multiple docking shafts (16) are provided and circumferentially distributed on turntable b (19); motor a (22) is provided on the inner side of body b (17) and is connected to turntable b (19) for transmission; multiple telescopic components a (5) are provided and circumferentially distributed on the outer circumferential surface of body a (9), and the output end of 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).

2. The automotive parts welding production apparatus according to claim 1, characterized in that, 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 for pushing 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 pointer (36).

3. 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).

4. The automotive parts welding production apparatus according to claim 1, characterized in that, A rolling groove is provided at the top of the docking shaft (16); a ball bearing a is rolled inside the rolling groove.

5. 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).

6. The automotive parts welding production apparatus according to claim 1, 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).

7. The automotive parts welding production apparatus according to claim 6, characterized in that, The conveyor plate (2) is equipped with a magnetic suction plate (35); the gear b (20) is equipped with a magnetic suction ring (34).

8. 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 h (31); the gear h (31) meshes with the gear g (29).

9. A method for welding automotive parts, using the welding production apparatus according to any one of claims 2-8, characterized in that, Includes the following steps: S1. Preparation: A staff member is required to stand at the operating position. When the carrier mechanism rotates to the operating position, the flange is placed on the turntable a (13) and the nut is placed near the round opening of the flange. S2, Alignment Correction: After the flange and nut are placed, the staff opens the telescopic component a (5) and motor a (22) to drive the sealing cover (8) to move down. During the downward movement, the position of the sealing cover (8) is adjusted according to the laser beam emitted by the laser pen (36) so that the alignment groove (801) is roughly above the nut. Then the conveying mechanism continues to convey the carrier mechanism to make a circular motion. After the sealing cover (8) moves down, the arc surface of the alignment groove (801) will press the edge of the nut at an angle, pressing the nut to be on the same circumference as the hole on the flange. 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 the 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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