Welding device and welding method for automobile suspension swing arm part

Abstract

The invention belongs to the technical field of automobile suspension production, and particularly relates to an automobile suspension swing arm part welding device and a welding method.The automobile suspension swing arm part welding device is reasonable in design and mainly comprises a positioning assembly, an outer welding seam welding assembly, a pressing assembly and an inner welding seam welding assembly, and all the parts cooperate with one another; the positioning assembly and the press-fit assembly are used for achieving press-fit assembly of the swing arm middle plate and the swing arm reinforcing plates on the two sides, and an automobile suspension swing arm piece blank is obtained; the positioning assembly and the outer welding seam welding assembly are used for welding an outer welding seam of the automobile suspension swing arm piece blank; the positioning assembly is used for driving the automobile suspension swing arm piece blank to rotate till the inner welding seams sequentially reach the inner welding positions, the inner welding seams located at the inner welding positions are welded through the inner welding seam welding assembly, automatic welding and assembling of the automobile suspension swing arm piece can be achieved through the mode, and industrial production and machining are facilitated.

Description

Technical Field

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

[0002] The role of the lower arm in the automobile suspension system is mainly reflected in the following aspects: 1) Supporting the vehicle body and shock absorption: The lower arm is an important part of the automobile suspension system. It is responsible for supporting the vehicle body and shock absorber, and can effectively buffer the vibration during driving. The tacit cooperation between the shock absorber and the lower arm ensures the stability and comfort of the car during driving. 2) Supporting weight and steering: The lower arm can also support the weight of the vehicle and is responsible for steering operation. The rubber sleeve on the swing arm plays a fixing role, connecting the shock absorber and the body. Once the rubber sleeve is damaged, the vehicle will make abnormal noises when driving, the shock absorption effect will also decrease, and the steering will become heavy. 3) Transmitting torque: The lower arm, as a guide mechanism, is used to transmit the torque between the wheel and the body, so that the wheel can move within a certain range. In addition, as a key component of the automobile suspension system, the lower arm is directly related to the performance and safety of the vehicle. In order to keep the lower arm in good condition, the appearance of the lower arm should be checked regularly, and attention should be paid to whether there is obvious deformation, cracks or rust, and the damaged parts should be replaced in time.

[0003] A Chinese patent document with publication number CN119115388B discloses a welding device and a welding method for automobile suspension swing arm parts, the device comprising: a frame; a plurality of center shafts, the plurality of center shafts are fixedly mounted on the frame, and a rotating sleeve is rotatably connected to the center shaft; a transmission assembly, which is transmission-connected to the rotating sleeve; a power assembly, the power assembly drives the rotating sleeve to rotate through the transmission of the transmission assembly; a positioning part, which is used for positioning the lower swing arm blank, the positioning part comprising 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 swing arm blank is automatically centrally flipped to improve welding efficiency, and during the flipping process, the pressing block is passively extended and moved toward the lower swing arm blank to achieve fixing and locking of the lower swing arm blank, the pressing block can avoid the welding path, and does not need to be clamped twice, further improving welding efficiency.

[0004] The above-mentioned automobile suspension swing arm welding device and welding method have shortcomings. First, the design of the welding device is not reasonable enough, which is not conducive to the automated welding and assembly of automobile suspension swing arm parts; second, the lower swing arm prepared by the device adopts double-layer stamped steel plate, which is only connected by outer seam welding, and the reliability of the connection is not ideal; third, the lower swing arm assembly structure prepared by the device is fixed, and the lower swing arm body is rigidly connected to the ball head assembly, which cannot realize the function of adjusting the wheelbase of the ball head assembly. Therefore, the existing welding system needs to be optimized and improved. Summary of the invention

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

[0006] To achieve the above technical object and reach the above technical effect, the present invention is realized through the following technical solutions:

[0007] The present invention provides a welding device for an automotive suspension swing arm part, including a positioning component, an outer weld seam welding component, a pressing component and an inner weld seam welding component;

[0008] The automotive suspension swing arm part is composed of a swing arm intermediate 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 intermediate plate. A ball head seat and a wheel track adjuster are jointly clamped and installed between the swing arm intermediate plate and the swing arm reinforcement plates on both sides. The wheel track adjuster realizes wheel track adjustment by driving the ball pin in the ball head seat to rotate eccentrically.

[0009] The positioning component is arranged inside the outer weld seam welding component. The positioning component is used to provide positioning for the assembly of the automotive suspension swing arm part. The positioning component and the outer weld seam welding component are jointly used to weld the outer weld seam after the swing arm intermediate plate and the swing arm reinforcement plate are butted.

[0010] The pressing component is arranged at the periphery of the outer weld seam welding component and is used to realize the pre-pressing connection between the swing arm intermediate plate and the swing arm reinforcement plates on both sides.

[0011] The inner weld seam welding component is arranged at the periphery of the outer weld seam welding component and is used to weld the inner weld seam after the swing arm intermediate plate and the swing arm reinforcement plate are butted.

[0012] Further, in the above welding device for an automotive suspension swing arm part, the swing arm intermediate plate includes a first angular plate. A first ball head seat installation groove and a first adjuster installation groove are opened at the inflection point of the first angular plate. First annular bodies are arranged at both ends of the first angular plate. A bushing with both ends protruding outward is arranged inside the first annular body. A plurality of rows of T-shaped locking grooves are opened near the inflection point and both ends of the first angular plate. The orientations of two adjacent T-shaped locking grooves in the same row are opposite;

[0013] The swing arm reinforcement plate includes a second angular plate. A second ball head seat installation groove and a second adjuster installation groove are opened at the inflection point of the second angular plate. Second annular bodies that can be sleeved outside the bushing are arranged at both ends of the second angular plate. A locking hook that can extend into the corresponding T-shaped locking groove is installed on the inner side of the second angular plate. The locking hook is composed of two symmetrically distributed L-shaped locking heads. A bevel chamfer is arranged on the outer side of the wide part of the L-shaped locking head to facilitate deformation under pressure. Weight-reducing grooves are opened on the two plate parts of the second angular plate;

[0014] After the swing arm intermediate plate and the swing arm reinforcing plates on both sides are butted, an outer weld seam is formed at the butting surface at the outer edge, and an inner weld seam is formed at the inner edge line where the weight-reducing groove of the swing arm reinforcing plate contacts the swing arm intermediate plate.

[0015] Further, in the above-mentioned welding device for automotive suspension swing arm parts, the ball head seat includes a first gear, and ball head blocks with reduced diameters are provided on both sides of the first gear. A ball head pin is installed at an eccentric position of the ball head block; the diameter of the first gear is matched with the diameter of the first ball head seat installation groove, and the diameter of the ball head block is matched with the diameter of the second ball head seat installation groove.

[0016] Further, in the above-mentioned welding device for automotive suspension swing arm parts, the wheelbase adjuster includes a second gear, and convex rods are symmetrically provided on both sides of the second gear. Inner hexagonal grooves are opened at the outer ends of the convex rods; the second gear meshes with the first gear, the diameter of the second gear is matched with the diameter of the first adjuster installation groove, and the diameter of the convex rod is matched with the diameter of the second adjuster installation groove.

[0017] Further, in the above-mentioned welding device for automotive suspension swing arm parts, the positioning component includes a turntable and a rotary drive for driving its horizontal rotation; an angular positioning groove for cooperating with the second angular plate in the swing arm reinforcing plate is opened inward on the upper side of the turntable. The depth of the angular positioning groove is less than the thickness of the second angular plate. A ball head seat avoidance groove and a regulator avoidance groove are opened at the inflection point of the angular positioning groove. Annular grooves for cooperating with the second ring body are provided at both ends of the angular positioning groove, and a positioning convex column for cooperating with the inner cavity of the bushing is provided at the center of the annular groove. An inner welding operation groove for facilitating the exposure of the weight-reducing groove in the second angular plate is opened on the angular positioning groove.

[0018] Further, in the above-mentioned welding device for automotive suspension swing arm parts, the outer weld seam welding component includes an annular sleeve and a first welding mechanism installed thereon; the inner cavity of the annular sleeve serves as the installation area for the rotary drive; the first welding mechanism is composed of a welding push rod, an ear seat, an inclination adjustment motor, a movable block, and a laser welding head. The movable end of the welding push rod is installed with an ear seat, an inclination adjustment motor is installed on the outer side of the ear seat, the output end of the inclination adjustment motor is installed with a movable block whose movement is restricted within the ear seat, and a laser welding head is embedded and installed on the movable block.

[0019] Further, in the above-mentioned welding device for automotive suspension swing arm parts, the pressing component includes a channel-shaped base plate, a vertical push rod, a flipping motor, a rotary joint, a vertical shaft, a pressing plate, and a belt transmission member. A vertical push rod and a flipping motor are installed on the channel-shaped base plate. The movable end of the vertical push rod is connected to the bottom end of the vertical shaft through a rotary joint. A pressing plate is installed at the top end of the vertical shaft, and the output end of the flipping motor can drive the vertical shaft to rotate around its own axis through the belt transmission member.

[0020] Further, in the above-mentioned welding device for automotive suspension swing arm parts, the inner weld seam welding assembly includes a vertical base plate, a horizontal push rod, a channel-shaped frame plate, an outer ring, an inner gear ring, a driving gear, a convex ring, a radial push rod, and a second welding mechanism. The 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 channel-shaped frame plate. Outer rings are respectively fixed to the outer ends of the two side plates of the channel-shaped frame plate. An inner gear ring and a driving gear for driving the inner gear ring to rotate are movably restricted in the outer ring. A convex ring extends outward from the inner hole edge of the inner gear 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 having the same structure as the first welding mechanism.

[0021] Further, in the above-mentioned welding device for automotive suspension swing arm parts, it further includes a controller, and the controller is respectively connected to the positioning assembly, the outer weld seam welding assembly, the pressing assembly, and the inner weld seam welding assembly.

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

[0023] S1. Use the loading manipulator to sequentially place the lower swing arm reinforcement plate and the swing arm intermediate plate on the positioning assembly, and use the pressing assembly to press the swing arm intermediate plate; then use the loading manipulator to place the upper swing arm reinforcement plate outside the swing arm intermediate plate, and use the pressing assembly to press the upper swing arm reinforcement plate to obtain a pre-pressed and connected automotive suspension swing arm part blank.

[0024] S2. Use the positioning assembly to drive the automotive suspension swing arm part blank to rotate, and cooperate with the outer weld seam welding assembly to weld the outer weld seam.

[0025] S3. Use the positioning assembly to drive the automotive suspension swing arm part blank to rotate until the inner weld seams reach the inner welding positions in sequence, and use the inner weld seam welding assembly to weld the inner weld seams at the inner welding positions.

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

[0027] 1. The present invention provides a welding device for automotive suspension swing arm parts, which mainly consists of a positioning assembly, an outer weld seam welding assembly, a pressing assembly, and an inner weld seam welding assembly. Each component cooperates with each other. The positioning assembly and the pressing assembly are used to realize the pressing and assembly of the swing arm intermediate plate and the swing arm reinforcement plates on both sides to obtain a blank of the automotive suspension swing arm part; the positioning assembly and the outer weld seam welding assembly are used to weld the outer weld seam of the automotive suspension swing arm part blank; the positioning assembly drives the automotive suspension swing arm part blank to rotate until the inner weld seams reach the inner welding positions in sequence, and the inner weld seam welding assembly is used to weld the inner weld seams at the inner welding positions. In this way, the automatic welding and assembly of the automotive suspension swing arm parts can be realized, which is beneficial to industrial production and processing.

[0028] 2. The automotive suspension swing arm part prepared by the present invention is composed of a swing arm middle plate, swing arm reinforcement plates, a ball head seat, and a track width adjuster. The structural strength of the swing arm middle plate is improved by using the swing arm reinforcement plates on both sides. First, the swing arm reinforcement plates on both sides are detachably connected to the swing arm middle plate by the cooperation of a locking hook and a T-shaped locking groove, and then further strengthened by external welding and internal welding, with relatively high connection reliability. At the same time, the swing arm reinforcement plates on both sides are used to cooperatively install the ball head seat and the track width adjuster on the swing arm middle plate. The track width adjuster can be driven to rotate by an inner hexagon wrench, and the track width is adjusted by driving the ball pin in the ball head seat to rotate eccentrically.

[0029] Of course, it is not necessary for any product implementing the present invention to achieve all the above advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0031] Figure 1 It is a schematic structural diagram of the overall welding device for the automotive suspension swing arm part of the present invention;

[0032] Figure 2 It is a schematic structural diagram of the automotive suspension swing arm part of the present invention;

[0033] Figure 3 It is a schematic exploded view of the automotive suspension swing arm part of the present invention;

[0034] Figure 4 It is a schematic structural diagram of the swing arm middle plate of the present invention;

[0035] Figure 5 It is a schematic structural diagram of the swing arm reinforcement plate of the present invention;

[0036] Figure 6 It is an assembly schematic diagram of the swing arm middle plate and the swing arm reinforcement plate of the present invention;

[0037] Figure 7 It is an assembly schematic diagram of the ball head seat and the track width adjuster of the present invention;

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

[0039] Figure 9 It is a schematic structural diagram of the external welding component of the present invention;

[0040] Figure 10 It is a schematic structural diagram of the first welding mechanism in the present invention;

[0041] Figure 11 It is a schematic structural diagram of the pressing component in the present invention;

[0042] Figure 12 It is a schematic structural diagram of the internal weld welding component in the present invention;

[0043] Figure 13 It is a connection block diagram of the main components in the present invention;

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

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

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

[0047] 3 - pressing component, 31 - channel - shaped base plate, 32 - vertical push rod, 33 - flipping motor, 34 - rotary joint, 35 - vertical shaft, 36 - pressing plate, 37 - belt transmission part;

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

[0049] 5 - automotive suspension swing arm part, 51 - swing arm intermediate plate, 511 - first angular plate, 512 - first ball head seat mounting groove, 513 - first regulator mounting groove, 514 - first ring body, 515 - bushing, 516 - T - shaped locking groove, 52 - swing arm reinforcement plate, 521 - second angular plate, 522 - second ball head seat mounting groove, 523 - second regulator mounting groove, 524 - second ring body, 525 - locking hook, 526 - weight - reducing groove, 53 - ball head seat, 531 - first gear, 532 - ball head block, 533 - ball head pin, 54 - track width regulator, 541 - second gear, 542 - convex rod, 543 - internal hexagonal groove, 55 - external weld, 56 - internal weld;

[0050] 6 - controller. Detailed implementation manners

[0051] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0052] As Figure 1 shown, this embodiment provides a welding device for an automotive suspension swing arm member, including a positioning assembly 1, an outer weld welding assembly 2, a pressing assembly 3, and an inner weld welding assembly 4.

[0053] As Figure 2 and Figure 3 shown, the automotive suspension swing arm member 5 is composed of a swing arm intermediate plate 51, a swing arm reinforcement plate 52, a ball head seat 53, and a track width adjuster 54. Swing arm reinforcement plates 52 are symmetrically installed on both sides of the swing arm intermediate plate 51. A ball head seat 53 and a track width adjuster 54 are jointly clamped and installed between the swing arm intermediate plate 51 and the swing arm reinforcement plates 52 on both sides. The track width adjuster 54 can be driven to rotate by using an inner hexagon wrench, and the track width adjuster 54 realizes track width adjustment by driving the ball pin in the ball head seat 53 to rotate eccentrically.

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

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

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

[0057] As Figure 4 shown, the swing arm intermediate plate 51 includes a first angular plate 511. A first ball head seat mounting groove 512 and a first adjuster mounting groove 513 are provided at the inflection point of the first angular plate 511. First rings 514 are provided at both ends of the first angular plate 511, and a bushing 515 with both ends protruding outward is arranged inside the first rings 514. A plurality of rows of T-shaped locking grooves 516 are provided near the inflection point and both ends of the first angular plate 511, and the orientations of two adjacent T-shaped locking grooves 516 in the same row are opposite.

[0058] As Figure 5 and Figure 6As shown, the swing arm reinforcing plate 52 includes a second angular plate 521. At the inflection point of the second angular plate 521, a second ball head seat mounting groove 522 and a second regulator mounting groove 523 are provided. At both ends of the second angular plate 521, there is a second ring body 524 that can be sleeved outside the bushing 515. Inside the second angular plate 521, a locking hook 525 that can extend into the corresponding T-shaped locking groove 516 is installed. The locking hook 525 is composed of two symmetrically distributed L-shaped locking heads. On the outer side of the wide part of the L-shaped locking head, there is a bevel chamfer that facilitates deformation under pressure. On the two plate parts of the second angular plate 521, there are weight-reducing grooves 526.

[0059] After the swing arm intermediate plate 51 and the swing arm reinforcing plates 52 on both sides are butted, an outer weld 55 is formed at the butting surface at the outer edge, and an inner weld 56 is formed at the inner edge line where the weight-reducing groove 526 of the swing arm reinforcing plate 52 contacts the swing arm intermediate plate 51.

[0060] As Figure 7 shown, the ball head seat 53 includes a first gear 531. On both sides of the first gear 531, there are ball head blocks 532 with a smaller diameter. The ball head blocks 532 are installed with ball head pins 533 at eccentric positions. The diameter of the first gear 531 is matched with the diameter of the first ball head seat mounting groove 512, and the diameter of the ball head block 532 is matched with the diameter of the second ball head seat mounting groove 513.

[0061] The wheelbase regulator 54 includes a second gear 541. On both sides of the second gear 541, convex rods 542 are symmetrically provided. An internal hexagonal groove 543 is opened inward at the outer end of the convex rod 542. The second gear 541 meshes with the first gear 531. The diameter of the second gear 541 is matched with the diameter of the first regulator mounting groove 513, and the diameter of the convex rod 542 is matched with the diameter of the second regulator mounting groove 523.

[0062] As Figure 8 shown, the positioning assembly 1 includes a turntable 11 and a rotary drive 12 for driving its horizontal rotation; on the upper side of the turntable 11, an angular positioning groove 111 that cooperates with the second angular plate 521 in the swing arm reinforcing plate 52 is opened inward. The depth of the angular positioning groove 111 is less than the thickness of the second angular plate 521. At the inflection point of the angular positioning groove 111, a ball head seat avoidance groove 112 and a regulator avoidance groove 113 are provided. At both ends of the angular positioning groove 111, an annular groove 114 that cooperates with the second ring body 524 is provided. At the center of the annular groove 114, a positioning convex column 115 that cooperates with the inner cavity of the bushing 515 is provided. On the angular positioning groove 111, an inner welding operation groove 116 that facilitates exposing the weight-reducing groove 526 in the second angular plate 521 is opened.

[0063] Working principle of the positioning component 1: The rotary drive 12 is used to drive the turntable 11 to rotate circumferentially, and the rotation angle can be adjusted. The angular positioning groove 111 in the turntable 11 is used to position and place the lower swing arm reinforcing plate 52 while exposing the outer weld 55. The setting of the positioning stud 115 in the turntable 11 can ensure the docking accuracy of the swing arm middle plate 51 with the lower swing arm reinforcing plate 52 and the upper swing arm reinforcing plate 52.

[0064] As Figure 9 and Figure 10 shown, the outer weld welding component 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 installation area for the rotary drive 12. The first welding mechanism 22 is composed of a welding push rod 221, an ear seat 222, an inclination adjustment motor 223, a movable block 224, and a laser welding head 225. The movable end of the welding push rod 221 is equipped with an ear seat 222, the outside of the ear seat 222 is equipped with an inclination adjustment motor 223, the output end of the inclination adjustment motor 223 is equipped with a movable block 224 whose movement is restricted within the ear seat 222, and a laser welding head 225 is embedded and installed on the movable block 224.

[0065] Working principle of the outer weld welding component 2: Considering that the outer 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 outer weld 55 remains constant, and the inclination adjustment motor 223 is used to adjust the inclination of the laser welding head 225 to meet the continuous welding requirements of the two-layer outer weld 55.

[0066] As Figure 11 shown, the pressing component 3 includes a channel-shaped substrate 31, a vertical push rod 32, a flipping motor 33, a rotary joint 34, a vertical shaft 35, a pressing plate 36, and a belt transmission member 37. A vertical push rod 32 and a flipping motor 33 are installed on the channel-shaped substrate 31. The movable end of the vertical push rod 32 is connected to the bottom end of the vertical shaft 35 through the rotary joint 34. A pressing plate 36 is installed at the top end of the vertical shaft 35. The output end of the flipping motor 33 can drive the vertical shaft 35 to rotate around its own axis through the belt transmission member 37. Key grooves are symmetrically opened on the outside of the vertical shaft 35. The belt transmission member 37 is composed of a driving wheel, a driven wheel, and a transmission belt sleeved between the two. The driving wheel is installed at the output end of the flipping motor, the driven wheel is sleeved on the outside of the vertical shaft 35, the driven wheel is movably supported by the channel-shaped substrate 31, and convex keys matching the key grooves are symmetrically provided on the inner wall of the through-hole of the driven wheel.

[0067] Working principle of the pressing component 3: When pressing is required, first use the vertical push rod 32 to drive the pressing plate 36 to move upward, and then use the flipping motor 33 and the belt transmission member 37 to drive the pressing plate 36 to horizontally flip, so that the pressing plate 36 is displaced above the object to be pressed. At this time, use the vertical push rod 32 to drive the pressing plate 36 to move downward, and the pressing operation can be realized. After the pressing is completed, the pressing plate 36 can be reset to avoid affecting subsequent welding operations.

[0068] As Figure 12 shown, the inner weld welding component 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 convex ring 47, a radial push rod 48 and a second welding mechanism 49. A horizontal push rod 42 is installed on the vertical base plate 41, and the movable end of the horizontal push rod 42 is fixed to the outer side of the web of the grooved frame plate 43. Outer rings 44 are respectively fixed to the outer ends of the two side plates of the grooved frame plate 43. An inner gear ring 45 and a driving gear 46 for driving the inner gear ring 45 to rotate are movably restricted in the outer ring 44, and the driving gear 46 is driven to rotate by a driving motor fixed to the inner side of the outer ring 44. A convex ring 47 extends outward from the inner hole edge of the inner gear ring 45, a radial push rod 48 is installed on the convex ring 47, and the movable end of the radial push rod 48 is installed with a second welding mechanism 49, and the structure of the second welding mechanism 49 is the same as that of the first welding mechanism 22.

[0069] Working principle of the inner weld welding component 4: Use the horizontal push rod 42 to drive the grooved frame plate 43 to displace towards the blank of the automotive suspension swing arm part to be pre-pressed and connected until the outer rings 44 on both sides are located outside the corresponding inner welds 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, and the radial push rod 48 can drive the second welding mechanism 49 to displace radially. The second welding mechanism 49 itself can realize the adjustment of 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] As Figure 13 shown, it further includes a controller 6, and the controller 6 is respectively connected to the positioning component 1, the outer weld welding component 2, the pressing component 3 and the inner weld welding component 4.

[0071] This embodiment also provides a welding method for an automotive suspension swing arm part, including the following steps:

[0072] S1. Use the loading manipulator to place the lower swing arm reinforcement plate 52 and the swing arm intermediate plate 51 on the positioning component 1 in sequence, and use the pressing component 3 to press the swing arm intermediate plate 51; then use the loading manipulator to place the upper swing arm reinforcement plate 52 outside the swing arm intermediate plate 51, and use the pressing component 3 to press the upper swing arm reinforcement plate 52 to obtain a pre-pressed and connected blank of the automotive suspension swing arm part.

[0073] S2. Drive the blank of the automotive suspension swing arm part to rotate by using the positioning component 1, and cooperate with the outer weld welding component 2 to weld the outer weld 55.

[0074] S3. Drive the blank of the automotive suspension swing arm part to rotate by using the positioning component 1. Rotate until the inner weld 56 reaches the inner welding position in sequence. Use the inner weld welding component 4 to weld the inner weld 56 at the inner welding position. Then drive the blank of the automotive suspension swing arm part by using the positioning component 1, so that another inner weld 56 can be transferred to the inner welding position, and the inner welding operation can be carried out again. Finally, the automotive suspension swing arm part 5 is obtained.

[0075] The specific application of this embodiment is as follows: The welding device for the automotive suspension swing arm part mainly consists of a positioning component 1, an outer weld welding component 2, a pressing component 3 and an inner weld welding component 4. Each component cooperates with each other. Use the positioning component 1 and the pressing component 3 to realize the pressing and assembly of the swing arm intermediate plate 51 and the swing arm reinforcement plates 52 on both sides to obtain a blank of the automotive suspension swing arm part; use the positioning component 1 and the outer weld welding component 2 to realize the welding of the outer weld 55 of the blank of the automotive suspension swing arm part; drive the blank of the automotive suspension swing arm part to rotate by using the positioning component 1. Rotate until the inner weld 56 reaches the inner welding position in sequence. Use the inner weld welding component 4 to weld the inner weld 56 at the inner welding position. In this way, the automatic welding and assembly of the automotive suspension swing arm part can be realized, which is beneficial to industrial production and processing.

[0076] The automotive suspension swing arm part prepared in this embodiment is composed of a swing arm intermediate plate 51, swing arm reinforcement plates 52, a ball head seat 53 and a track width adjuster 54. Use the swing arm reinforcement plates 52 on both sides to improve the structural strength of the swing arm intermediate plate 51. The swing arm reinforcement plates 52 on both sides first use the cooperation of the locking hook 525 and the T-shaped locking groove 516 to realize the anti-disconnection connection with the swing arm intermediate plate 51, and then use the outer weld welding and inner weld welding methods for further strengthening connection, and the connection reliability is relatively high. At the same time, use the swing arm reinforcement plates 52 on both sides to cooperate with the installation of the ball head seat 53 and the track width adjuster 54 on the swing arm intermediate plate 51. The track width adjuster 54 can be driven to rotate by using an inner hexagon wrench. The track width adjuster 54 realizes the track width adjustment by driving the ball pin in the ball head seat 53 to rotate eccentrically.

[0077] The preferred embodiments of the present invention disclosed above are only helpful for explaining the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A welding device for an automotive suspension swing arm part, characterized in that, It includes a positioning component, an external weld welding component, a pressing component, and an internal weld welding component; The automotive suspension swing arm is composed of a swing arm intermediate plate, a swing arm reinforcement plate, a ball head seat, and a track width adjuster. Swing arm reinforcement plates are symmetrically installed on both sides of the swing arm intermediate plate. A ball head seat and a track width adjuster are jointly clamped and installed between the swing arm intermediate plate and the swing arm reinforcement plates on both sides. The track width adjuster realizes track width adjustment by driving the ball head pin in the ball head seat to rotate eccentrically; The positioning component is arranged inside the external weld welding component. The positioning component is used to provide positioning for the assembly of the automotive suspension swing arm, and the positioning component and the external weld welding component are jointly used to weld the external weld after the docking of the swing arm intermediate plate and the swing arm reinforcement plate; The pressing component is arranged on the periphery of the external weld welding component and is used to realize the pre-pressing connection between the swing arm intermediate plate and the swing arm reinforcement plates on both sides; The internal weld welding component is arranged on the periphery of the external weld welding component and is used to weld the internal weld after the docking of the swing arm intermediate plate and the swing arm reinforcement plate.

2. The welding device for the automotive suspension swing arm part according to claim 1, characterized in that, The swing arm intermediate plate includes a first angular plate. At the inflection point of the first angular plate, a first ball head seat installation groove and a first adjuster installation groove are provided. At both ends of the first angular plate, a first ring body is provided. Inside the first ring body, a bushing with both ends protruding outward is provided. A number of rows of T-shaped locking grooves are provided near the inflection point and both ends of the first angular plate, and the orientations of adjacent two T-shaped locking grooves in the same row are opposite; The swing arm reinforcement plate includes a second angular plate. At the inflection point of the second angular plate, a second ball head seat installation groove and a second adjuster installation groove are provided. At both ends of the second angular plate, a second ring body that can be sleeved outside the bushing is provided. A locking hook that can extend into the corresponding T-shaped locking groove is installed on the inner side of the second angular plate. The locking hook is composed of two symmetrically distributed L-shaped locking heads. On the outer side of the wide part of the L-shaped locking head, a bevel chamfer that is easy to deform under pressure is provided. Weight-reducing grooves are provided on the two plate parts of the second angular plate; After the swing arm intermediate plate and the swing arm reinforcement plates on both sides are docked, an external weld is formed at the outer edge of the docking surface, and an internal weld is formed at the inner edge line where the weight-reducing groove of the swing arm reinforcement plate contacts the swing arm intermediate plate.

3. The welding device for the automotive suspension swing arm part according to claim 2, characterized in that The ball head seat includes a first gear. On both sides of the first gear, ball head blocks with reduced diameters are provided. 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 installation groove, and the diameter of the ball head block matches the diameter of the second ball head seat installation groove.

4. The welding device for the automotive suspension swing arm part according to claim 3, wherein The track width adjuster includes a second gear. On both sides of the second gear, convex rods are symmetrically provided. An internal hexagonal groove is opened inward at the outer end of the convex rod; the second gear meshes with the first gear, the diameter of the second gear matches the diameter of the first adjuster installation groove, and the diameter of the convex rod matches the diameter of the second adjuster installation groove.

5. The welding device for the automotive suspension swing arm part according to claim 4, characterized in that, The positioning component includes a turntable and a slewing drive for driving its horizontal rotation; on the upper side of the turntable, an angular positioning groove is inwardly formed to cooperate with the second angular plate in the swing arm reinforcing plate. The depth of the angular positioning groove is less than the thickness of the second angular plate. At the inflection point of the angular positioning groove, a ball head seat avoidance groove and a regulator avoidance groove are provided. At both ends of the angular positioning groove, an annular groove for cooperating with the second ring body is provided. At the center of the annular groove, a positioning convex column for cooperating with the inner cavity of the bushing is provided. An internal welding operation groove is formed on the angular positioning groove to facilitate the exposure of the weight reduction groove in the second angular plate.

6. The welding device for the automotive suspension swing arm part according to claim 5, characterized in that, The external weld welding component includes an annular sleeve and a first welding mechanism installed thereon. The inner cavity of the annular sleeve serves as the installation area for the slewing 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 outside 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 within the ear seat, and the laser welding head is embedded and installed on the movable block.

7. The welding device for the automotive suspension swing arm part according to claim 6, characterized in that, The pressing component includes a channel-shaped base plate, a vertical push rod, a flipping motor, a rotary joint, a vertical shaft, a pressing plate, and a belt transmission member. The vertical push rod and the flipping motor are installed on the channel-shaped base plate. The movable end of the vertical push rod is connected to the bottom end of the vertical shaft through the rotary joint. The pressing plate is installed at the top end of the vertical shaft. The output end of the flipping motor can drive the vertical shaft to rotate around its own axis through the belt transmission member.

8. The welding device for the automotive suspension swing arm part according to claim 7, characterized in that, The internal weld welding component includes a vertical base plate, a horizontal push rod, a channel-shaped frame plate, an outer ring, an internal gear ring, a driving gear, a convex ring, a radial push rod, and a second welding mechanism. The horizontal push rod is installed on the vertical base plate. The movable end of the horizontal push rod is fixed to the outer side of the web of the channel-shaped frame plate. Outer rings are respectively fixed to the outer ends of the two side plates of the channel-shaped frame plate. An internal gear ring and a driving gear for driving the internal gear ring to rotate are movably restricted in the outer ring. A convex ring extends outward from the inner hole edge of the internal gear ring. The radial push rod is installed on the convex ring. The movable end of the radial push rod is installed with a second welding mechanism having the same structure as the first welding mechanism.

9. The welding device for the automotive suspension swing arm part according to claim 8, wherein, It further includes a controller, and the controller is respectively connected to the positioning component, the external weld welding component, the pressing component, and the internal weld welding component.

10. A welding method for an automotive suspension swing arm part, which is realized based on the automotive suspension swing arm part welding device described in claim 9, characterized in that, It includes the following steps: S1. Use the loading manipulator to place the lower swing arm reinforcing plate and the swing arm intermediate plate on the positioning component in sequence, and use the pressing component to press the swing arm intermediate plate; then use the loading manipulator to place the upper swing arm reinforcing plate outside the swing arm intermediate plate, and use the pressing component to press the upper swing arm reinforcing plate to obtain a pre-pressed and connected automotive suspension swing arm part blank. S2. Use the positioning component to drive the automotive suspension swing arm part blank to rotate, and cooperate with the external weld welding component to weld the external weld. S3. Use the positioning component to drive the automotive suspension swing arm part blank to rotate until the internal weld reaches the internal welding position in sequence, and use the internal weld welding component to weld the internal weld at the internal welding position.

Images