Automobile suspension swing arm welding device and welding method

Abstract

The present invention belongs to the field of automobile suspension production technology, and specifically relates to a automobile suspension swing arm welding device and a welding method. The automobile suspension swing arm welding device of the present invention is reasonably designed, and is mainly composed of a positioning component, an external weld welding component, a pressing component and an internal weld welding component. The various components cooperate with each other, and the positioning component and the pressing component are used to realize the pressing assembly of the swing arm middle plate and the swing arm reinforcement plates on both sides to obtain the automobile suspension swing arm component blank; the positioning component and the external weld welding component are used to realize the welding of the external weld of the automobile suspension swing arm component blank; the positioning component is used to drive the automobile suspension swing arm component blank to rotate, and the rotation to the inner weld reaches the inner welding position in turn, and the inner weld welding component is used to weld the inner weld in the inner welding position. In this way, the automatic welding and assembly of automobile suspension swing arm components can be realized, which is conducive to industrial production and processing.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile suspension production, and particularly relates to a welding device and a welding method for automobile suspension swing arm parts. Background Art

[0002] The lower arm plays a key role in the automotive suspension system: 1) Supporting the vehicle body and absorbing shock: The lower arm is a crucial component of the vehicle suspension system, supporting the vehicle body and shock absorbers and effectively damping vibrations during driving. The perfect combination of shock absorbers and lower arm ensures vehicle stability and comfort during driving. 2) Supporting weight and steering: The lower arm also supports the vehicle's weight and handles steering. The rubber sleeve on the arm secures the shock absorber to the vehicle body. Damage to the sleeve results in unusual noises during driving, reduced shock absorption, and heavy steering. 3) Transmitting torque: The lower arm acts as a guide, transmitting torque between the wheel and the vehicle body, keeping the wheels within a certain range of motion. Furthermore, as a key component of the automotive suspension system, the lower arm is directly related to vehicle performance and safety. To maintain the lower arm in good condition, regularly inspect its appearance for visible deformation, cracks, or rust, and replace any damaged components promptly.

[0003] The Chinese patent document with publication number CN119115388B discloses a welding device and a welding method for automobile suspension arm parts. The device includes: a frame; a plurality of center shafts, which are fixedly mounted on the frame and rotatably connected to a rotating sleeve; a transmission assembly, which is transmission-connected to the rotating sleeve; a power assembly, which drives the rotating sleeve to rotate through the transmission of the transmission assembly; a positioning part, which is used to position the lower arm blank, and the positioning part includes a first positioning pin and a second positioning pin fixedly mounted on the outside of the rotating sleeve; when full welding is performed, the lower arm blank is automatically flipped centrally to improve welding efficiency. During the flipping process, the pressing block passively extends and moves toward the lower arm blank to achieve fixed locking of the lower arm blank. The pressing block can avoid the welding path and does not require secondary clamping, further improving welding efficiency.

[0004] The aforementioned automotive suspension arm welding device and method have shortcomings. First, the welding device design is not rational, making it difficult to automatically weld and assemble automotive suspension arm components. Second, the lower arm is constructed using double-layer stamped steel plates, relying solely on external seam welding for connection, resulting in less than ideal connection reliability. Third, the lower arm assembly is rigidly connected to the ball joint assembly, making it incapable of adjusting the ball joint assembly's wheelbase. Therefore, optimization and improvement of the existing welding system are required. Summary of the Invention

[0005] The object of the present invention is to overcome at least one of the above-mentioned problems existing in the prior art and to provide a welding device and a welding method for an automobile suspension arm.

[0006] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0007] The present invention provides a welding device for automobile suspension arm parts, comprising a positioning assembly, an outer weld welding assembly, a pressing assembly and an inner weld welding assembly;

[0008] The automobile suspension swing arm consists of a swing arm middle plate, a swing arm reinforcement plate, a ball head seat, and a wheel track adjuster. The swing arm reinforcement plates are symmetrically installed on both sides of the swing arm middle plate. The ball head seat and the wheel track adjuster are clamped and installed between the swing arm middle plate and the swing arm reinforcement plates on both sides. The wheel track adjuster achieves wheel track adjustment by driving the ball stud in the ball head seat to rotate eccentrically.

[0009] The positioning assembly is arranged inside the outer weld welding assembly, and the positioning assembly is used to provide positioning for the assembly of the automobile suspension swing arm component. The positioning assembly and the outer weld welding assembly are used together to weld the outer weld of the swing arm middle plate and the swing arm reinforcement plate after they are butted together;

[0010] The pressing assembly is arranged at the periphery of the outer weld assembly and is used to realize the pre-pressing connection between the swing arm middle plate and the swing arm reinforcement plates on both sides;

[0011] The inner weld welding assembly is arranged at the periphery of the outer weld welding assembly and is used to weld the inner welds after the swing arm middle plate and the swing arm reinforcement plate are butt-jointed.

[0012] Furthermore, in the above-mentioned automobile suspension swing arm welding device, the swing arm intermediate plate includes a first angled plate, a first ball head seat mounting groove and a first adjuster mounting groove are formed at the inflection point of the first angled plate, a first ring body is provided at both ends of the first angled plate, and a bushing with both ends protruding outward is provided inside the first ring body, and a plurality of rows of T-shaped locking grooves are formed near the inflection point and at both ends of the first angled plate, and adjacent two T-shaped locking grooves in the same row are oriented in opposite directions;

[0013] The swing arm reinforcement plate includes a second angled plate, a second ball head seat mounting groove and a second adjuster mounting groove are provided at the inflection point of the second angled plate, a second ring body that can be sleeved on the outside of the bushing is provided at both ends of the second angled plate, a lock hook that can extend into the corresponding T-shaped lock groove is installed on the inner side of the second angled plate, and the lock hook is composed of two symmetrically distributed L-shaped lock heads. The outer side of the wide part of the L-shaped lock head is provided with a bevel chamfer to facilitate deformation under pressure, and the two plate parts of the second angled plate are provided with weight-reducing grooves;

[0014] After the swing arm middle plate and the swing arm reinforcement plates on both sides are butted together, an outer weld is formed at the outer edge of the butt surface, and an inner weld is formed at the inner edge line where the weight reduction groove of the swing arm reinforcement plate contacts the swing arm middle plate.

[0015] Furthermore, in the above-mentioned automobile suspension arm welding device, the ball head seat includes a first gear, and ball head blocks with smaller diameters are provided on both sides of the first gear, and the ball head blocks are installed with ball head pins at eccentric positions; the diameter of the first gear matches the diameter of the first ball head seat mounting groove, and the diameter of the ball head block matches the diameter of the second ball head seat mounting groove.

[0016] Furthermore, in the above-mentioned automobile suspension swing arm welding device, the wheelbase adjuster includes a second gear, and protruding rods are symmetrically provided on both sides of the second gear, and the outer ends of the protruding rods are provided with hexagonal inner grooves facing inward; the second gear is meshed with the first gear, and the diameter of the second gear matches the diameter of the first adjuster mounting groove, and the diameter of the protruding rods matches the diameter of the second adjuster mounting groove.

[0017] Furthermore, in the above-mentioned automobile suspension swing arm welding device, the positioning assembly includes a turntable and a rotary drive for driving the horizontal rotation thereof; an angular positioning groove is provided inwardly on the upper side of the turntable for cooperating with the second angular plate in the swing arm reinforcement plate, the depth of the angular positioning groove is less than the thickness of the second angular plate, the angular positioning groove is provided with a ball head seat avoidance groove and an adjuster avoidance groove at the inflection point, the angular positioning groove is provided with annular grooves cooperating with the second ring body at both ends, a positioning boss cooperating with the inner cavity of the bushing is provided at the center of the annular groove, and an internal welding operation groove is provided on the angular positioning groove for facilitating exposure of the weight-reducing groove in the second angular plate.

[0018] Furthermore, in the above-mentioned automobile suspension arm welding device, the outer weld welding assembly includes an annular sleeve and a first welding mechanism installed thereon, and the inner cavity of the annular sleeve serves as the installation area of ​​the rotary drive; the first welding mechanism is composed of a welding push rod, an ear seat, a tilting motor, a movable block and a laser welding head, the movable end of the welding push rod is installed with an ear seat, the outer side of the ear seat is installed with a tilting motor, the output end of the tilting motor is installed with a movable block whose movement is restricted in the ear seat, and the laser welding head is embedded in the movable block.

[0019] Furthermore, in the above-mentioned automobile suspension swing arm welding device, the pressing assembly includes a groove-type base plate, a vertical push rod, a flip motor, a rotary joint, a vertical shaft, a pressure plate and a belt transmission member. The vertical push rod and the flip motor are installed on the groove-type base plate. The movable end of the vertical push rod is connected to the bottom end of the vertical shaft via a rotary joint. The top end of the vertical shaft is installed with a pressure plate. The output end of the flip motor can drive the vertical shaft to rotate around its own axis via the belt transmission member.

[0020] Furthermore, in the above-mentioned automobile suspension swing arm welding device, the inner weld welding assembly includes a vertical base plate, a horizontal push rod, a grooved frame plate, an outer ring, an inner gear ring, a driving gear, a convex ring, a radial push rod and a second welding mechanism. A horizontal push rod is installed on the vertical base plate, and the movable end of the horizontal push rod is fixed to the outer side of the web of the grooved frame plate. The outer ends of the two side plates of the grooved frame plate are respectively fixed with an outer ring, and the outer ring has an inner gear ring and a driving gear for driving the inner gear ring to rotate. The inner hole edge of the inner gear ring extends outward to form a convex ring, and a radial push rod is installed on the convex ring. The movable end of the radial push rod is installed with a second welding mechanism with the same structure as the first welding mechanism.

[0021] Furthermore, the above-mentioned automobile suspension arm welding device also includes a controller, which is connected to the positioning assembly, the outer weld welding assembly, the pressing assembly and the inner weld welding assembly respectively.

[0022] The present invention also provides a method for welding an automobile suspension arm, which is implemented based on the above-mentioned automobile suspension arm welding device and includes the following steps:

[0023] S1. Using a loading robot, the lower swing arm reinforcement plate and the swing arm middle plate are sequentially placed on a positioning assembly, and the swing arm middle plate is pressed together using a pressing assembly. Then, using a loading robot, the upper swing arm reinforcement plate is placed on the outer side of the swing arm middle plate, and the upper swing arm reinforcement plate is pressed together using a pressing assembly to obtain a pre-pressed and connected automobile suspension swing arm blank.

[0024] S2. Use the positioning assembly to rotate the automobile suspension arm blank, and cooperate with the external weld assembly to weld the external weld;

[0025] S3. Use the positioning assembly to drive the automobile suspension arm blank to rotate until the inner weld reaches the inner welding position in turn, and use the inner weld welding assembly to weld the inner weld at the inner welding position.

[0026] The beneficial effects of the present invention are:

[0027] 1. The present invention provides a welding device for automobile suspension swing arm parts, which is mainly composed of a positioning component, an outer weld welding component, a pressing component and an inner weld welding component. The various components cooperate with each other, and the positioning component and the pressing component are used to realize the pressing assembly of the swing arm middle plate and the swing arm reinforcement plates on both sides to obtain the automobile suspension swing arm part blank; the positioning component and the outer weld welding component are used to realize the welding of the outer weld of the automobile suspension swing arm part blank; the positioning component is used to drive the automobile suspension swing arm part blank to rotate, and the inner weld reaches the inner welding position in turn by rotating until the inner weld reaches the inner welding position, and the inner weld in the inner welding position is welded by the inner weld welding component. In this way, the automatic welding and assembly of automobile suspension swing arm parts can be realized, which is conducive to industrial production and processing.

[0028] 2. The automobile suspension swing arm assembly prepared by the present invention comprises a swing arm intermediate plate, a swing arm reinforcement plate, a ball head seat, and a track adjuster. The swing arm reinforcement plates on both sides enhance the structural strength of the swing arm intermediate plate. The swing arm reinforcement plates on both sides first utilize locking hooks and T-shaped locking slots to achieve a non-detachable connection with the swing arm intermediate plate. External and internal welds are then used to further strengthen the connection, resulting in a highly reliable connection. Simultaneously, the swing arm reinforcement plates on both sides cooperate with the ball head seat and track adjuster to be mounted on the swing arm intermediate plate. The track adjuster can be driven to rotate using an Allen wrench, and the track adjuster achieves track adjustment by driving the eccentric rotation of the ball pin in the ball head seat.

[0029] Of course, any product implementing the present invention does not necessarily need to achieve all of the above advantages at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 This is a schematic diagram of the overall structure of the automobile suspension swing arm welding device of the present invention;

[0032] Figure 2 This is a schematic structural diagram of the automobile suspension swing arm component of the present invention;

[0033] Figure 3 This is a schematic diagram of the structural decomposition of the automobile suspension swing arm component of the present invention;

[0034] Figure 4 Schematic diagram of the structure of the swing arm middle plate in the present invention;

[0035] Figure 5 Schematic diagram of the structure of the swing arm reinforcement plate of the present invention;

[0036] Figure 6 Schematic diagram of the assembly of the swing arm intermediate plate and the swing arm reinforcement plate in the present invention;

[0037] Figure 7 This is a schematic diagram of the assembly of the ball seat and the wheelbase adjuster of the present invention;

[0038] Figure 8 It is a structural schematic diagram of the positioning component in the present invention;

[0039] Figure 9 It is a structural schematic diagram of the foreign weld assembly of the present invention;

[0040] Figure 10 Schematic diagram of the structure of the first welding mechanism in the present invention;

[0041] Figure 11 Schematic diagram of the structure of the press-fit assembly in the present invention;

[0042] Figure 12 Schematic diagram of the structure of the inner weld welding assembly in the present invention;

[0043] Figure 13 A connection diagram of the main components of the present invention;

[0044] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0045] 1- positioning assembly, 11- turntable, 111- angular positioning groove, 112- ball head seat avoidance groove, 113- adjuster avoidance groove, 114- annular groove, 115- positioning boss, 116- internal welding operation groove, 12- rotary drive;

[0046] 2-external weld welding assembly, 21-annular sleeve, 22-first welding mechanism, 221-welding push rod, 222-ear seat, 223-tilt motor, 224-movable block, 225-laser welding head;

[0047] 3-pressing assembly, 31-grooved base plate, 32-vertical push rod, 33-flip motor, 34-rotating joint, 35-vertical shaft, 36-pressing plate, 37-belt transmission;

[0048] 4- inner weld welding assembly, 41- vertical base plate, 42- horizontal push rod, 43- groove frame plate, 44- outer ring, 45- inner gear ring, 46- driving gear, 47- convex ring, 48- radial push rod, 49- second welding mechanism;

[0049] 5-automobile suspension swing arm, 51-swing arm middle plate, 511-first angular plate, 512-first ball head seat mounting groove, 513-first adjuster mounting groove, 514-first ring body, 515-bushing, 516-T-shaped lock groove, 52-swing arm reinforcement plate, 521-second angular plate, 522-second ball head seat mounting groove, 523-second adjuster mounting groove, 524-second ring body, 525-lock hook, 526-weight reduction groove, 53-ball head seat, 531-first gear, 532-ball head block, 533-ball head pin, 54-wheelbase adjuster, 541-second gear, 542-protruding rod, 543-inner hexagonal slot, 55-external weld, 56-internal weld;

[0050] 6-Controller. DETAILED DESCRIPTION

[0051] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0052] like Figure 1 As shown, this embodiment provides a welding device for automobile suspension arm parts, including a positioning component 1, an outer weld welding component 2, a pressing component 3 and an inner weld welding component 4.

[0053] like Figure 2 and Figure 3 As shown, the automobile suspension swing arm 5 consists of a swing arm middle plate 51, a swing arm reinforcement plate 52, a ball stud 53, and a track adjuster 54. The swing arm reinforcement plates 52 are symmetrically mounted on either side of the swing arm middle plate 51. The ball stud 53 and track adjuster 54 are clamped between the swing arm middle plate 51 and the two swing arm reinforcement plates 52. The track adjuster 54 can be rotated using an Allen wrench. The track adjuster 54 adjusts the track by driving the ball stud in the ball stud 53 to rotate eccentrically.

[0054] In this embodiment, the positioning assembly 1 is arranged inside the external weld welding assembly 2. The positioning assembly 1 is used to provide positioning for the assembly of the automobile suspension arm 5. The positioning assembly 1 and the external weld welding assembly 2 are jointly used to weld the external weld 55 after the swing arm middle plate 51 and the swing arm reinforcement plate 52 are connected.

[0055] In this embodiment, the pressing assembly 3 is arranged at the periphery of the outer weld assembly 2 to realize the pre-pressing connection between the swing arm middle plate 51 and the swing arm reinforcement plates 52 on both sides;

[0056] In this embodiment, the inner weld welding assembly 4 is arranged at the periphery of the outer weld welding assembly 2 and is used to weld the inner weld 56 after the swing arm middle plate 51 and the swing arm reinforcement plate 52 are connected.

[0057] like Figure 4 As shown, the swing arm intermediate plate 51 includes a first angled plate 511. A first ball seat mounting slot 512 and a first adjuster mounting slot 513 are defined at the inflection point of the first angled plate 511. First ring bodies 514 are located at both ends of the first angled plate 511. Bushings 515 with outwardly protruding ends are located within the first ring body 514. Several rows of T-shaped locking slots 516 are defined near the inflection point and at both ends of the first angled plate 511. Adjacent T-shaped locking slots 516 in the same row face opposite directions.

[0058] like Figure 5 and Figure 6As shown, the swing arm reinforcement plate 52 includes a second angled plate 521. A second ball seat mounting slot 522 and a second adjuster mounting slot 523 are defined at the inflection point of the second angled plate 521. Second rings 524 are provided at both ends of the second angled plate 521, capable of being sleeved onto the outside of the bushing 515. A locking hook 525 is mounted on the inner side of the second angled plate 521, capable of extending into the corresponding T-shaped locking slot 516. The locking hook 525 comprises two symmetrically distributed L-shaped locking heads. The wide portion of the L-shaped locking heads is chamfered on the outside to facilitate deformation under pressure. Weight-reducing slots 526 are defined on both sides of the second angled plate 521.

[0059] After the swing arm middle plate 51 and the swing arm reinforcement plates 52 on both sides are connected, an outer weld 55 is formed at the outer edge of the connecting surface, and an inner weld 56 is formed at the inner edge line where the weight reduction groove 526 of the swing arm reinforcement plate 52 contacts the swing arm middle plate 51.

[0060] like Figure 7 As shown, the ball seat 53 includes a first gear 531. Ball blocks 532 of reduced diameter are provided on either side of the first gear 531. Ball pins 533 are mounted eccentrically on the ball blocks 532. The diameter of the first gear 531 matches the diameter of the first ball seat mounting slot 512, while the diameter of the ball block 532 matches the diameter of the second ball seat mounting slot 513.

[0061] The wheelbase adjuster 54 includes a second gear 541, with protruding rods 542 symmetrically disposed on either side of the second gear 541. The outer ends of the protruding rods 542 have hexagonal sockets 543 extending inwardly. The second gear 541 meshes with the first gear 531. The diameter of the second gear 541 matches the diameter of the first adjuster mounting slot 513, while the diameter of the protruding rods 542 matches the diameter of the second adjuster mounting slot 523.

[0062] like Figure 8 As shown, the positioning assembly 1 includes a turntable 11 and a rotary driver 12 for driving the turntable 11 to rotate horizontally. An angular positioning groove 111 is provided inwardly on the upper side of the turntable 11 for engaging with the second angled plate 521 in the swing arm reinforcement plate 52. The depth of the angular positioning groove 111 is less than the thickness of the second angled plate 521. A ball head seat avoidance groove 112 and an adjuster avoidance groove 113 are provided at the inflection point of the angular positioning groove 111. Annular grooves 114 are provided at both ends of the angular positioning groove 111 for engaging with the second ring body 524. A positioning boss 115 is provided at the center of the annular groove 114 for engaging with the inner cavity of the bushing 515. An internal welding operation groove 116 is provided on the angular positioning groove 111 to facilitate exposure of the weight reduction groove 526 in the second angled plate 521.

[0063] The operating principle of the positioning assembly 1: A rotary drive 12 drives the turntable 11 in an adjustable circumferential rotation. An angular positioning slot 111 in the turntable 11 positions the lower swing arm reinforcement plate 52 while exposing the outer weld seam 55. The positioning boss 115 in the turntable 11 ensures precise alignment of the swing arm intermediate plate 51 with the lower and upper swing arm reinforcement plates 52.

[0064] like Figure 9 and Figure 10 As shown, the outer weld welding assembly 2 includes an annular sleeve 21 and a first welding mechanism 22 mounted thereon. The inner cavity of the annular sleeve 21 serves as the mounting area for the rotary drive 12. The first welding mechanism 22 is composed of a welding push rod 221, an ear seat 222, a tilting motor 223, a movable block 224, and a laser welding head 225. The movable end of the welding push rod 221 is mounted with the ear seat 222, the outer side of the ear seat 222 is mounted with the tilting motor 223, and the output end of the tilting motor 223 is mounted with a movable block 224 whose movement is restricted within the ear seat 222. The laser welding head 225 is embedded in the movable block 224.

[0065] The working principle of the external weld welding assembly 2: Considering that the external weld 55 is an irregular annular seam, the welding push rod 221 is used to adjust the position of the laser welding head 225 so that the closest distance between the laser welding head 225 and the external weld 55 is maintained at a constant value, and the tilt motor 223 is used to adjust the inclination angle of the laser welding head 225 to meet the continuous welding requirements of the two layers of external welds 55.

[0066] like Figure 11 As shown, the pressing assembly 3 includes a grooved base plate 31, a vertical push rod 32, a flip motor 33, a rotary joint 34, a vertical shaft 35, a pressure plate 36, and a belt transmission 37. The vertical push rod 32 and the flip motor 33 are mounted on the grooved base plate 31. The movable end of the vertical push rod 32 is connected to the bottom end of the vertical shaft 35 via the rotary joint 34. The pressure plate 36 is mounted on the top end of the vertical shaft 35. The output end of the flip motor 33 can drive the vertical shaft 35 to rotate around its own axis via the belt transmission 37. Keyways are symmetrically provided on the outer side of the vertical shaft 35. The belt transmission 37 consists of a driving wheel, a driven wheel, and a transmission belt sleeved therebetween. The driving wheel is mounted on the output end of the flip motor, and the driven wheel is sleeved on the outer side of the vertical shaft 35. The driven wheel is movably supported by the grooved base plate 31. The inner wall of the shaft hole of the driven wheel is symmetrically provided with convex keys that cooperate with the keyways.

[0067] The working principle of the pressing assembly 3 is as follows: When pressing is required, the vertical push rod 32 first drives the pressing plate 36 upward. The flip motor 33 and belt drive 37 then drive the pressing plate 36 to flip horizontally, so that the pressing plate 36 is positioned above the object to be pressed. At this point, the vertical push rod 32 drives the pressing plate 36 downward to complete the pressing operation. When pressing is completed, the pressing plate 36 can be reset to avoid affecting subsequent welding operations.

[0068] like Figure 12 As shown, the inner weld welding assembly 4 includes a vertical base plate 41, a horizontal push rod 42, a grooved frame plate 43, an outer ring 44, an inner gear ring 45, a driving gear 46, a protruding ring 47, a radial push rod 48, and a second welding mechanism 49. A horizontal push rod 42 is mounted on the vertical base plate 41. The movable end of the horizontal push rod 42 is fixed to the outer side of the web of the grooved frame plate 43. The outer ring 44 is fixed to the outer end of each side plate of the grooved frame plate 43. The outer ring 44 is restrained in movement by an inner gear ring 45 and a driving gear 46 for rotating the inner gear ring 45. The driving gear 46 is driven by a driving motor fixed to the inner side of the outer ring 44. A protruding ring 47 extends outward from the inner hole edge of the inner gear ring 45. A radial push rod 48 is mounted on the protruding ring 47. The movable end of the radial push rod 48 is mounted to the second welding mechanism 49. The structure of the second welding mechanism 49 is the same as that of the first welding mechanism 22.

[0069] The working principle of the inner weld welding assembly 4 is as follows: Horizontal push rods 42 are used to drive the grooved frame plate 43 toward the pre-pressed automobile suspension arm blank until the outer rings 44 on both sides are located at the periphery of the corresponding inner weld 56. The driving gear 46 in the outer ring 44 can drive the inner gear ring 45 and the second welding mechanism 49 thereon to rotate circumferentially. The radial push rods 48 can drive the second welding mechanism 49 to move radially. The second welding mechanism 49 itself can adjust the height position and inclination angle of the laser welding head thereon. In this way, the welding requirements of different types of annular inner welds 56 can be met. The inner diameter of the outer ring 44 is larger than the maximum diameter of the circular area where each inner weld 56 is located. For example, the inner diameter of the outer ring 44 can be set to 1.5 times the maximum diameter of the circular area where each inner weld 56 is located.

[0070] like Figure 13 As shown, a controller 6 is also included, which is connected to the positioning component 1, the outer weld welding component 2, the pressing component 3 and the inner weld welding component 4 respectively.

[0071] This embodiment also provides a method for welding an automobile suspension arm, comprising the following steps:

[0072] S1. Use a loading robot to sequentially place the lower swing arm reinforcement plate 52 and the swing arm middle plate 51 on the positioning assembly 1, and use the pressing assembly 3 to press the swing arm middle plate 51. Then, use the loading robot to place the upper swing arm reinforcement plate 52 on the outside of the swing arm middle plate 51, and use the pressing assembly 3 to press the upper swing arm reinforcement plate 52 to obtain a pre-pressed and connected automobile suspension swing arm blank.

[0073] S2. Use the positioning assembly 1 to rotate the automobile suspension arm blank, and cooperate with the external weld assembly 2 to weld the external weld 55;

[0074] S3. Use the positioning component 1 to drive the automobile suspension arm blank to rotate until the inner weld 56 reaches the inner welding position in turn, use the inner weld welding component 4 to weld the inner weld 56 in the inner welding position, and then use the positioning component 1 to drive the automobile suspension arm blank to transfer another inner weld 56 to the inner welding position, and then perform the inner welding operation again to finally obtain the automobile suspension arm 5.

[0075] The specific application of this embodiment is: the automobile suspension arm welding device is mainly composed of a positioning component 1, an outer weld welding component 2, a pressing component 3 and an inner weld welding component 4. The various components work together, and the positioning component 1 and the pressing component 3 are used to realize the pressing assembly of the swing arm middle plate 51 and the swing arm reinforcement plates 52 on both sides to obtain the automobile suspension arm component blank; the positioning component 1 and the outer weld welding component 2 are used to realize the welding of the outer weld 55 of the automobile suspension arm component blank; the positioning component 1 is used to drive the automobile suspension arm component blank to rotate, and rotate to the inner weld 56 to reach the inner welding position in turn, and the inner weld welding component 4 is used to weld the inner weld 56 in the inner welding position. In this way, the automated welding and assembly of automobile suspension arm components can be realized, which is conducive to industrial production and processing.

[0076] The automobile suspension swing arm assembly prepared in this embodiment comprises a swing arm intermediate plate 51, a swing arm reinforcement plate 52, a ball head seat 53, and a track adjuster 54. The swing arm reinforcement plates 52 on either side enhance the structural strength of the swing arm intermediate plate 51. The swing arm reinforcement plates 52 on either side first utilize locking hooks 525 and T-shaped locking slots 516 to achieve a secure connection to the swing arm intermediate plate 51. External and internal welds are then used to further strengthen the connection, resulting in a highly reliable connection. The swing arm reinforcement plates 52 on either side simultaneously facilitate the installation of the ball head seat 53 and track adjuster 54 on the swing arm intermediate plate 51. The track adjuster 54 can be rotated using an Allen wrench. The track adjuster 54 achieves track adjustment by driving the ball stud in the ball head seat 53 to rotate eccentrically.

[0077] The preferred embodiments of the present invention disclosed above are merely intended to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A welding device for automobile suspension arm parts, characterized in that: It includes positioning components, external weld welding components, press-fit components and internal weld welding components; The automobile suspension swing arm consists of a swing arm middle plate, a swing arm reinforcement plate, a ball head seat, and a wheel track adjuster. The swing arm reinforcement plates are symmetrically installed on both sides of the swing arm middle plate. The ball head seat and the wheel track adjuster are clamped and installed between the swing arm middle plate and the swing arm reinforcement plates on both sides. The wheel track adjuster achieves wheel track adjustment by driving the ball stud in the ball head seat to rotate eccentrically. The swing arm intermediate plate includes a first angled plate, a first ball seat mounting groove and a first adjuster mounting groove are formed at the inflection point of the first angled plate, a first ring body is formed at both ends of the first angled plate, a bushing with both ends protruding outward is formed inside the first ring body, and a plurality of rows of T-shaped locking grooves are formed near the inflection point and at both ends of the first angled plate, with adjacent two T-shaped locking grooves in the same row facing opposite directions; The swing arm reinforcement plate includes a second angled plate, a second ball head seat mounting groove and a second adjuster mounting groove are provided at the inflection point of the second angled plate, a second ring body that can be sleeved on the outside of the bushing is provided at both ends of the second angled plate, a lock hook that can extend into the corresponding T-shaped lock groove is installed on the inner side of the second angled plate, and the lock hook is composed of two symmetrically distributed L-shaped lock heads. The outer side of the wide part of the L-shaped lock head is provided with a bevel chamfer to facilitate deformation under pressure, and the two plate parts of the second angled plate are provided with weight-reducing grooves; After the swing arm middle plate and the swing arm reinforcement plates on both sides are butted together, an outer weld is formed at the outer edge of the butt surface, and an inner weld is formed at the inner edge line where the weight reduction groove of the swing arm reinforcement plate contacts the swing arm middle plate; The positioning assembly is arranged inside the outer weld welding assembly, and the positioning assembly is used to provide positioning for the assembly of the automobile suspension arm component, and the positioning assembly and the outer weld welding assembly are jointly used to weld the outer weld of the swing arm middle plate and the swing arm reinforcement plate after they are butted; the positioning assembly includes a turntable and a rotary drive for driving it to rotate horizontally; the upper side of the turntable is provided with an angular positioning groove that cooperates with the second angular plate in the swing arm reinforcement plate, the depth of the angular positioning groove is less than the thickness of the second angular plate, and the angular positioning groove is provided with a ball head seat avoidance groove and an adjuster avoidance groove at the inflection point, and the angular positioning groove is provided with annular grooves that cooperate with the second ring body at both ends, and a positioning boss that cooperates with the inner cavity of the bushing is provided at the center of the annular groove. The angular positioning groove is provided with an internal welding operation groove that facilitates exposing the weight reduction groove in the second angular plate; The pressing assembly is arranged at the periphery of the outer weld assembly and is used to realize the pre-pressing connection between the swing arm middle plate and the swing arm reinforcement plates on both sides; The inner weld welding assembly is arranged at the periphery of the outer weld welding assembly and is used to weld the inner welds of the swing arm middle plate and the swing arm reinforcement plate after they are butt-jointed.

2. The automobile suspension swing arm welding device according to claim 1, characterized in that: The ball head seat includes a first gear, and ball head blocks with smaller diameters are provided on both sides of the first gear. The ball head blocks are equipped with ball pins at eccentric positions; the diameter of the first gear matches the diameter of the first ball head seat mounting groove, and the diameter of the ball head block matches the diameter of the second ball head seat mounting groove.

3. The automobile suspension swing arm welding device according to claim 2, characterized in that: The wheelbase adjuster includes a second gear, and protruding rods are symmetrically provided on both sides of the second gear, and an inner hexagonal groove is opened inward at the outer end of the protruding rod; the second gear is meshed with the first gear, and the diameter of the second gear matches the diameter of the first adjuster mounting groove, and the diameter of the protruding rod matches the diameter of the second adjuster mounting groove.

4. The automobile suspension swing arm welding device according to claim 3, characterized in that: The outer weld welding assembly includes an annular sleeve and a first welding mechanism installed thereon, the inner cavity of the annular sleeve serves as the installation area of ​​the rotary drive; the first welding mechanism is composed of a welding push rod, an ear seat, a tilting motor, a movable block and a laser welding head, the movable end of the welding push rod is installed with an ear seat, the outer side of the ear seat is installed with a tilting motor, the output end of the tilting motor is installed with a movable block whose movement is restricted in the ear seat, and the laser welding head is embedded in the movable block.

5. The automobile suspension swing arm welding device according to claim 4, characterized in that: The pressing assembly includes a groove-shaped base plate, a vertical push rod, a flip motor, a rotary joint, a vertical shaft, a pressure plate and a belt transmission member. The vertical push rod and the flip motor are installed on the groove-shaped base plate. The movable end of the vertical push rod is connected to the bottom end of the vertical shaft via a rotary joint. The top end of the vertical shaft is installed with a pressure plate. The output end of the flip motor can drive the vertical shaft to rotate around its own axis via the belt transmission member.

6. The automobile suspension arm welding device according to claim 5, characterized in that: The inner weld welding assembly includes a vertical base plate, a horizontal push rod, a grooved frame plate, an outer ring, an inner gear ring, a driving gear, a convex ring, a radial push rod and a second welding mechanism. A horizontal push rod is installed on the vertical base plate, and the movable end of the horizontal push rod is fixed to the outer side of the web of the grooved frame plate. The outer ends of the two side plates of the grooved frame plate are respectively fixed with an outer ring. The outer ring has an inner gear ring and a driving gear for driving the inner gear ring to rotate. The inner hole edge of the inner gear ring extends outward to form a convex ring. A radial push rod is installed on the convex ring, and the movable end of the radial push rod is installed with a second welding mechanism with the same structure as the first welding mechanism.

7. The automobile suspension swing arm welding device according to claim 6, characterized in that: It also includes a controller, which is connected to the positioning component, the outer weld welding component, the pressing component and the inner weld welding component respectively.

8. A method for welding an automobile suspension arm, implemented based on the automobile suspension arm welding device according to claim 7, characterized in that: The steps include: S1. Using a loading robot, the lower swing arm reinforcement plate and the swing arm middle plate are sequentially placed on a positioning assembly, and the swing arm middle plate is pressed together using a pressing assembly. Then, using a loading robot, the upper swing arm reinforcement plate is placed on the outer side of the swing arm middle plate, and the upper swing arm reinforcement plate is pressed together using a pressing assembly to obtain a pre-pressed and connected automobile suspension swing arm blank. S2. Use the positioning assembly to rotate the automobile suspension arm blank, and cooperate with the external weld assembly to weld the external weld; S3. Use the positioning assembly to drive the automobile suspension arm blank to rotate until the inner weld reaches the inner welding position in turn, and use the inner weld welding assembly to weld the inner weld at the inner welding position.

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