Multi-station welding positioning device for automobile suspension support

Abstract

The application discloses a kind of automobile suspension support multi-station welding positioning device, it is related to automobile parts welding tool technical field.The present device is low in production efficiency, poor in universality, and the problems such as clamping easy deformation, the present application includes multi-station limiting guide rail, welding robot, protective baffle and multiple installation carrier plate;Symmetrical first clamping mechanism and second clamping mechanism are equipped on installation carrier plate, first clamping mechanism includes first adjusting assembly, second adjusting assembly and adjustable linkage assembly, and is realized multidirectional adjustment and automatic clamping by servo electric cylinder, bevel gear linkage;Second clamping mechanism includes fixed clamping plate, sliding clamping plate and elastic floating component, realize flexible clamping, the present application improves positioning accuracy and clamping stability, reduces welding deformation, adapts to flexible production of multiple vehicle models, improves welding efficiency and security.

Description

Technical Field

[0001] This invention relates to the field of automotive component welding tooling technology, specifically to a multi-station welding positioning device for automotive suspension brackets. Background Technology

[0002] Automotive suspension brackets are crucial load-bearing components connecting the vehicle body and powertrain. They are typically welded from multiple stamped sheet metal or tubing, and their welding quality directly affects the vehicle's NVH performance, driving safety, and service life. Due to the complex shape of the suspension bracket structure, the distribution of weld seams in different spatial locations, and the fact that they are mostly thin-walled parts, thermal deformation is prone to occur during the welding process. Therefore, high requirements are placed on the welding positioning tooling.

[0003] In existing technologies, welding positioning devices for automotive suspension brackets mostly adopt single-station or fixed structures. When the welding robot is welding a workpiece, the operator must wait for the welding to be completed before loading and unloading the next workpiece. The loading and unloading processes cannot be paralleled with the welding process, resulting in low production efficiency and difficulty in meeting the needs of mass production. At the same time, existing clamping mechanisms are mostly dedicated fixed fixtures with fixed positioning and clamping points and limited adjustment dimensions. When the specifications of the suspension bracket or the vehicle model change, the entire tooling needs to be replaced or a long period of readjustment is required. This results in insufficient versatility and flexibility, and high changeover costs.

[0004] Furthermore, existing welding positioning devices mostly employ rigid clamping when holding suspended supports. For thin-walled suspended supports, this can easily lead to workpiece deformation due to excessive clamping force or over-positioning, resulting in dimensional deviations after welding and affecting subsequent assembly accuracy. While some existing devices incorporate adjustment mechanisms, the adjustment and linkage structures are complex, making it difficult to guarantee clamping stability and centering. They also lack effective elastic floating clamping and guiding limit structures, resulting in insufficient positioning accuracy. Regarding welding protection, existing devices lack adequate isolation measures against welding spatter and arc light, which can easily affect surrounding equipment and operators. Additionally, the replacement of easily worn parts such as pads and clamping plates in the fixture is inconvenient, leading to high maintenance costs.

[0005] Therefore, there is an urgent need for an automotive suspension bracket welding positioning device that can achieve continuous welding at multiple stations, adapt to different specifications of suspension brackets, provide stable clamping, reduce welding deformation, and facilitate maintenance and replacement. Summary of the Invention

[0006] Technical problems to be solved: To address the shortcomings of existing technologies, this invention provides a multi-station welding positioning device for automotive suspension brackets. This device solves the problems of existing welding positioning devices being mostly single-station or fixed structures, having limited adjustment dimensions of the clamping mechanism, poor versatility, difficulty in adapting to different specifications and vehicle models of suspension brackets, and difficulties in changing models.

[0007] Technical solution: To achieve the above objectives, the present invention is implemented through the following technical solution: a multi-station welding positioning device for automotive suspension brackets, comprising a multi-station limiting guide rail and a plurality of mounting plates slidably connected thereon, wherein a first clamping mechanism is provided on both sides of the upper end of the mounting plate, which includes a first adjustment component, a second adjustment component and an adjustable linkage component; The mounting plate has opposing mounting brackets on both sides of its upper end. The first adjustment component includes a first rotating shaft rotatably connected to one of the mounting brackets and a first rotating clamp fixed to one end of the first rotating shaft. The second adjustment component includes a second rotating shaft rotatably connected to the other mounting bracket and a second rotating clamp connected to one end of the other mounting bracket. The adjustable linkage component includes a shaped connecting rod rotatably connected to the lower end of the mounting bracket. A second clamping mechanism is provided in the middle of the upper part of the mounting plate. It includes a fixed clamping plate fixed to the upper part of the mounting plate and a mechanical clamping assembly. The mechanical clamping assembly includes an L-shaped sliding plate passing through the sliding adjustment groove of the mounting plate and a sliding clamping plate fixed to its upper end.

[0008] Preferably, multiple first limiting rods are fixedly connected to both sides of the upper end of the mounting plate, and multiple limiting bushings are fixedly connected to both sides of the mounting frame, with each limiting bushing sleeve sleeved and connected to the first limiting rod.

[0009] Preferably, a first anti-friction pad is embedded in the inner side of the first rotating clamp, a rotating handle is fixedly connected to the other end of the first rotating shaft, a first helical gear is fixedly connected to the first rotating shaft, and the first rotating shaft, the rotating handle and the first helical gear are coaxially arranged.

[0010] Preferably, a servo electric cylinder is embedded in one end of another mounting bracket. A non-circular output shaft is fixedly connected to the output shaft of the servo electric cylinder, and one end of the non-circular output shaft is detachably connected to the second rotating clamping plate by a fixing bolt. A non-circular adapter hole is opened on the second rotating shaft, and the non-circular output shaft is slidably connected to the inner side of the non-circular adapter hole. A second helical gear is fixedly connected to the second rotating shaft, and the non-circular output shaft, the second rotating shaft, the non-circular adapter hole, and the second helical gear are coaxially arranged. A symmetrical foot switch is fixedly connected to one side of the upper end of the mounting plate, and the foot switch is electrically connected to the corresponding servo electric cylinder.

[0011] Preferably, a removable protective pad is embedded in the inner side of the second rotating clamp, and a magnetic suction module is embedded in the inner side of both the removable protective pad and the inner side of the second rotating clamp.

[0012] Preferably, a third helical gear is fixedly connected to the upper end of the irregular connecting rod, and the third helical gear meshes with the first helical gear and the second helical gear. The first rotating shaft and the second rotating shaft are arranged perpendicularly to the irregular connecting rod.

[0013] Preferably, the lower end of the irregular connecting rod is fitted with an external threaded sleeve, the upper outer side of the external threaded sleeve is threaded with an internal threaded adjusting bushing, the upper inner side of the internal threaded adjusting bushing is rotatably connected to the lower end of the irregular connecting rod, and the lower end of the external threaded sleeve is fixedly connected with a fourth helical gear.

[0014] Preferably, a rotating seat is fixedly connected to both sides of the upper end of the mounting plate, and a connecting shaft is rotatably connected to each rotating seat. A fifth helical gear is fixedly connected to both ends of the connecting shaft, and the fifth helical gear is meshed with a corresponding fourth helical gear. Open clamping sleeves are symmetrically and detachably connected to both sides of the upper end of the mounting plate, and the lower end of the external threaded sleeve is rotatably connected to the inner side of the open clamping sleeve.

[0015] Preferably, a symmetrical second limiting rod is fixedly connected to the inner side of the sliding adjustment groove on the mounting plate, the sliding clamp is sleeved and connected to the second limiting rod, a pressure spring is sleeved and connected to the second limiting rod, one end of the pressure spring abuts against the inner side of the fixed clamp, the other end of the pressure spring abuts against the corresponding side of the sliding clamp, the upper end of the L-shaped slide plate abuts against the other side of the sliding clamp, and a second protective friction pad is embedded on the corresponding side of both the fixed clamp and the sliding clamp.

[0016] Preferably, a welding robot is provided on one side of the multi-station limiting guide rail, and a protective baffle is provided between the welding robot and the multi-station limiting guide rail; The mounting plate is rotatably connected to multiple omnidirectional casters, which are slidably connected to the inner side of the multi-station limiting guide rail. The upper end of the multi-station limiting guide rail is fixedly connected to a guide ring, and the lower end of the L-shaped slide plate is rotatably connected to symmetrical mechanical rollers, which are slidably connected to the outer side of the guide ring. The inner side of the multi-station limiting guide rail is fixedly connected to a traction ring rod, and multiple traction vehicles are slidably connected to the traction ring rod. A traction rope is sleeved and connected to one side of the traction vehicle, and the other end of the traction rope is fixedly connected to the side of the mounting plate.

[0017] Beneficial effects: This invention provides a multi-station welding positioning device for automotive suspension brackets. It has the following beneficial effects: 1. Through the cooperation of the first adjustment component, the second adjustment component, and the adjustable linkage component in the first clamping mechanism, and with the help of the first rotating shaft, the second rotating shaft, the irregular connecting rod, the external threaded sleeve rod, the internal threaded adjusting bushing, the fourth helical gear, the fifth helical gear, and the open clamping sleeve, multi-directional adjustment is achieved. At the same time, the torque is transmitted by the servo electric cylinder, the irregular output shaft, and the irregular adapter hole, so that the first rotating clamping plate and the second rotating clamping plate can be stably aligned and clamped. Combined with the elastic floating clamping composed of the fixed clamping plate, the sliding clamping plate, the L-shaped sliding plate, the mechanical roller, the second limit rod, and the pressure spring in the second clamping mechanism, as well as the guiding and limiting of the first limit rod and the limit bushing, the positioning accuracy and clamping stability of the suspension bracket can be effectively improved, and welding deformation can be reduced.

[0018] 2. Due to the modular design of each clamping, adjusting and protective component, such as detachable protective pads, magnetic modules, fixing bolts, open clamping sleeves and second protective friction pads, the clamping position and clamping force can be flexibly adjusted according to different specifications and shapes of automotive suspension brackets, adapting to flexible welding production of multiple models, and facilitating quick replacement and maintenance of wear parts, reducing tooling changeover costs.

[0019] 3. A circulating conveying system is formed by multi-station limit guide rails, traction ring rods, traction vehicles, traction ropes and multiple mounting plates, so that multiple mounting plates pass through loading station, welding station and unloading station respectively, realizing parallel loading and unloading and welding processes, which significantly improves production efficiency; the protective baffle isolates welding arc light and spatter, improving operational safety. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the device of the present invention; Figure 2 This is a schematic diagram of the automobile suspension bracket clamping structure of the present invention; Figure 3 This is a schematic diagram of the first clamping mechanism of the present invention; Figure 4 This is a partial view of the first clamping mechanism of the present invention; Figure 5 This is a schematic diagram of the servo motor drive mechanism of the present invention; Figure 6 This is a schematic diagram of the gear transmission structure of the present invention; Figure 7 This is a cross-sectional view of the first adjustment component of the present invention; Figure 8 This is a cross-sectional view of the transmission structure of the first adjusting component of the present invention; Figure 9 This is a partial view of the second clamping mechanism of the present invention; Figure 10 This is a schematic diagram of the multi-station limiting guide rail structure of the present invention; Figure 11 For the present invention Figure 4 Enlarged connection structure diagram at point A; Figure 12 For the present invention Figure 9 Enlarged schematic diagram of the connection structure at point B.

[0021] The components include: 1. Multi-station limit guide rail; 2. Welding robot; 3. Mounting carrier plate; 4. First clamping mechanism; 5. Second clamping mechanism; 6. Protective baffle; 7. Universal caster wheel; 8. Traction vehicle; 9. Traction rope; 10. Guide ring; 11. Traction ring rod. 401. First adjusting component; 402. Second adjusting component; 403. Removable protective pad; 404. Foot switch; 405. First anti-friction protective pad; 406. Adjustable linkage component; 407. Mounting bracket; 408. Limiting bushing; 409. First limiting rod; 501. Fixing clamp; 502. Mechanical clamping component; 503. Second protective friction pad; 4011, First rotating clamping plate; 4012, First rotating shaft; 4013, Rotating handle; 4014, First helical gear; 4021, Second rotating clamping plate; 4022, Servo electric cylinder; 4023, Irregularly shaped output shaft; 4024, Magnetic suction module; 4025, Fixing bolt; 4026, Second rotating shaft; 4027, Irregularly shaped adapter hole; 4028, Second helical gear; 4061, Irregularly shaped connecting rod; 4062, Externally threaded sleeve rod; 4063, Third helical gear; 4064, Internally threaded adjusting bushing; 4065, Open clamping sleeve; 4066, Fourth helical gear; 4067, Fifth helical gear; 4068, Rotating seat; 4069, Connecting shaft; 5021, L-shaped sliding plate; 5022, Mechanical roller; 5023, Second limiting rod; 5024, Pressure spring; 5025, Sliding clamping plate. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Example: Figure 1-12As shown, this embodiment of the invention provides a multi-station welding positioning device for automotive mounting brackets, including a multi-station limiting guide rail 1, a welding robot 2, a protective baffle 6, and multiple mounting plates 3. The protective baffle 6 is located between the welding robot 2 and the multi-station limiting guide rail 1 to isolate welding arc light and metal spatter. The mounting plates 3 are slidably connected to the multi-station limiting guide rail 1 via universal casters 7 and can move cyclically along the guide rail. The upper ends of the mounting plates 3 are provided with first clamping mechanisms 4 on both sides to clamp the sides of the workpiece, and a second clamping mechanism 5 is provided in the middle of the upper end to clamp the middle of the workpiece at the welding station, forming multi-point positioning.

[0024] The first clamping mechanism 4 includes a first adjusting component 401, a second adjusting component 402, and an adjustable linkage component 406. Mounting brackets 407 are mounted on both sides of the upper end of the mounting plate 3. A first rotating shaft 4012 is rotatably connected to one of the mounting brackets 407. One end of the first rotating shaft 4012 is fixed to a first rotating clamping plate 4011, and the other end is provided with a rotating handle 4013. A first helical gear 4014 is fixed on the shaft. A second rotating shaft 4026 is rotatably connected to the other mounting bracket 407, and a servo electric cylinder 4022 is embedded therein. Its output shaft is fixed to a non-circular output shaft 4023. The non-circular output shaft 4023 is detachably connected to the second rotating clamping plate 4021 by fixing bolts 4025. A non-circular adapter hole 4027 is opened on the second rotating shaft 4026, and the non-circular output shaft 4023 slides within it. A second helical gear 4028 is fixed on the shaft.

[0025] Among them, the irregular output shaft 4023 is an external spline shaft, and the irregular adapter hole 4027 is a matching internal spline hole. The two work together to transmit circumferential torque and allow axial relative sliding to meet the adjustment requirements of the clamping position.

[0026] The lower end of the mounting bracket 407 is rotatably connected to the irregular connecting rod 4061, and the upper end of the rod is fixed with a third helical gear 4063, which meshes with the first helical gear 4014 and the second helical gear 4028 respectively. The irregular connecting rod 4061 is a square cross-section rod. The upper end of the external threaded sleeve rod 4062 is provided with a matching square sliding hole, which is sleeved on the lower end of the irregular connecting rod 4061. The two can transmit torque and allow axial relative expansion and contraction. The lower end of the external threaded sleeve rod 4062 is fixed with a fourth helical gear 4066. The synchronous linkage of the first clamping mechanism 4 on both sides is realized through the fifth helical gear 4067 and the connecting shaft 4069. The upper end of the mounting plate 3 is fixedly connected with a rotating seat 4068 on both sides. The rotating seat 4068 is rotatably connected with a connecting shaft 4069. The two ends of the connecting shaft 4069 are fixedly connected with the fifth helical gear 4067, and the fifth helical gear 4067 meshes with the corresponding fourth helical gear 4066.

[0027] In the adjustable linkage assembly 406, the outer side of the upper end of the external threaded sleeve rod 4062 is threadedly connected to the inner threaded adjusting bushing 4064. The inner side of the upper end of the inner threaded adjusting bushing 4064 is rotatably connected to the lower end of the irregular connecting rod 4061. Rotating the inner threaded adjusting bushing 4064 can change the extension length of the external threaded sleeve rod 4062, thereby adjusting the clamping height and clamping range of the first clamping mechanism 4. The lower end of the external threaded sleeve rod 4062 is rotatably connected to the inner side of the open clamping sleeve 4065. The open clamping sleeve 4065 is a split bearing structure, which is formed by bolting the upper half bearing shell and the lower half bearing shell. It can be detachably connected to the mounting plate 3 for easy disassembly and maintenance.

[0028] Multiple first limiting rods 409 are fixedly connected to both sides of the upper end of the mounting plate 3. Multiple limiting bushings 408 are fixedly connected to both sides of the mounting frame 407. The limiting bushings 408 are sleeved on the first limiting rods 409, so that the mounting frame 407 can move along the first limiting rods 409 to adjust the overall position of the first clamping mechanism 4. The first anti-friction pad 405 is embedded in the inner side of the first rotating clamping plate 4011. The removable pad 403 is embedded in the inner side of the second rotating clamping plate 4021. Magnetic modules 4024 are provided on the inner sides of both the removable pad 403 and the second rotating clamping plate 4021 to facilitate quick removal and replacement of the pad.

[0029] The second clamping mechanism 5 includes a fixed clamping plate 501 and a mechanical clamping assembly 502. An L-shaped sliding plate 5021 is slidably connected to the sliding adjustment groove of the mounting plate 3. The lower end is rotatably connected to a mechanical roller 5022, and the upper end is fixed to a sliding clamping plate 5025. The sliding clamping plate 5025 is sleeved on a second limiting rod 5023. A pressure-bearing spring 5024 is sleeved on the second limiting rod 5023. The two ends abut against the fixed clamping plate 501 and the sliding clamping plate 5025 respectively. The clamping surfaces of the fixed clamping plate 501 and the sliding clamping plate 5025 are both embedded with a second protective friction pad 503.

[0030] A traction ring rod 11 is fixedly connected to the inner side of the multi-station limiting guide rail 1. Multiple traction vehicles 8 are slidably connected to the traction ring rod 11. The traction vehicles 8 are electric ring traction trolleys that move cyclically along the traction ring rod 11 through guide wheels and drive motors. The traction vehicles 8 are connected to the mounting plate 3 through traction ropes 9. Multiple universal casters 7 are rotatably connected to the mounting plate 3. The universal casters 7 are slidably engaged with the inner side of the multi-station limiting guide rail 1. A guide ring 10 is fixedly connected to the upper end of the multi-station limiting guide rail 1. A mechanical roller 5022 is slidably engaged with the outer side of the guide ring 10. The guide ring 10 has a variable diameter profile along its circumference. The welding station corresponds to the clamping section, and the loading and unloading station corresponds to the loosening section.

[0031] Working principle: During operation, the operator first places the car mount to be welded on the positioning position of the mounting plate 3. According to the car model and specifications of the mount to be welded, the operator adjusts the overall position of the mounting bracket 407 through the limiting bushing 408 and the first limiting rod 409. The operator rotates the internal thread adjusting bushing 4064 to change the extension length of the external thread sleeve 4062, thus completing the pre-adjustment of the clamping height and clamping range. Then, the operator rotates the rotating handle 4013, which drives the first rotating shaft 4012 and the first helical gear 4014 to rotate. The first helical gear 4014 drives the special-shaped connecting rod 4061 to rotate through the third helical gear 4063. The external thread sleeve 4062 at the lower end of the special-shaped connecting rod 4061 rotates accordingly. The fourth helical gear 4066 at the lower end of the external thread sleeve 4062 meshes with the fifth helical gear 4067 at both ends of the connecting shaft 4069, so that the first clamping mechanisms 4 on both sides are linked synchronously to complete the manual coarse adjustment of the clamping angle.

[0032] When the foot switch 404 is pressed, the servo electric cylinder 4022 is started, and the irregular output shaft 4023 slides in the irregular adapter hole 4027 and transmits torque, driving the second rotating shaft 4026 and the second rotating clamping plate 4021 to rotate. At the same time, the second helical gear 4028 meshes with the third helical gear 4063 and the first helical gear 4014, so that the first rotating clamping plate 4011 and the second rotating clamping plate 4021 are synchronously aligned and clamp the two sides of the workpiece, thus completing the active clamping of the first clamping mechanism 4.

[0033] After the workpiece is clamped and fixed by the first clamping mechanism 4, the tractor 8 starts to move along the traction ring rod 11, and pulls the mounting plate 3 through the traction rope 9. The universal moving wheel 7 rolls along the multi-station limit guide rail 1, driving the mounting plate 3 to be transported to the welding station. During the process of the mounting plate 3 moving to the welding station, the mechanical roller 5022 at the lower end of the L-shaped slide plate 5021 rolls along the clamping section contour outside the guide ring 10. The variable diameter contour of the guide ring 10 pushes the mechanical roller 5022 inward, driving the L-shaped slide plate 5021 to slide towards the fixed clamping plate 501, thereby pushing the sliding clamping plate 5025 to move along the second limit rod 5023 and compressing the bearing spring 5024, so that the sliding clamping plate 5025 and the fixed clamping plate 501 automatically clamp the middle of the workpiece, realizing the elastic floating clamping of the second clamping mechanism 5.

[0034] Welding robot 2 performs welding operations on the suspended bracket. Protective baffle 6 isolates welding spatter and arc light, protecting the operator and surrounding equipment. After welding is completed, the mounting plate 3 continues to move to the unloading station. Mechanical roller 5022 disengages from the clamping section outline of guide ring 10, pressure spring 5024 resets and pushes sliding clamp 5025 back, and second clamping mechanism 5 automatically releases. At the same time, servo electric cylinder 4022 resets, and first rotating clamp 4011 and second rotating clamp 4021 open synchronously to remove the workpiece.

[0035] Multiple mounting plates 3 are driven by a tractor 8 and cycle through the loading, welding and unloading stations, realizing the parallel operation of the loading and unloading process and the welding process. Through the above method, the present invention realizes multi-station continuous cyclic welding, multi-directional adjustable clamping, synchronous centering clamping and station trigger elastic floating clamping, effectively improving the positioning accuracy and clamping stability of the suspension bracket, reducing welding deformation of thin-walled parts, adapting to flexible production of multiple vehicle models, and significantly improving welding production efficiency and operational safety.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-station welding positioning device for automotive suspension brackets, comprising a multi-station limiting guide rail (1) and a plurality of mounting plates (3) slidably connected thereon, characterized in that: The mounting plate (3) has a first clamping mechanism (4) arranged on both sides of its upper end, which includes a first adjustment component (401), a second adjustment component (402) and an adjustable linkage component (406). The mounting plate (3) has opposing mounting brackets (407) on both sides of its upper end. The first adjustment component (401) includes a first rotating shaft (4012) rotatably connected to one of the mounting brackets (407) and a first rotating clamp (4011) fixed to one end of the first rotating shaft (4012). The second adjustment component (402) includes a second rotating shaft (4026) rotatably connected to the other mounting bracket (407) and a second rotating clamp (4021) connected to one end of it. The adjustable linkage component (406) includes a shaped connecting rod (4061) rotatably connected to the lower end of the mounting bracket (407). The upper middle part of the mounting plate (3) is provided with a second clamping mechanism (5), which includes a fixed clamping plate (501) fixed to the upper end of the mounting plate (3) and a mechanical clamping assembly (502). The mechanical clamping assembly (502) includes an L-shaped sliding plate (5021) passing through the sliding adjustment groove of the mounting plate (3) and a sliding clamping plate (5025) fixed to its upper end.

2. The multi-station welding positioning device for automotive suspension brackets according to claim 1, characterized in that: Multiple first limiting rods (409) are fixedly connected to both sides of the upper end of the mounting plate (3), and multiple limiting bushings (408) are fixedly connected to both sides of the mounting bracket (407), and the limiting bushings (408) are all sleeved and connected to the first limiting rods (409).

3. The multi-station welding positioning device for automotive suspension brackets according to claim 1, characterized in that: The first rotating clamp (4011) has an embedded anti-friction pad (405) installed on its inner side. The other end of the first rotating shaft (4012) is fixedly connected to a rotating handle (4013). The first rotating shaft (4012) is fixedly connected to a first helical gear (4014). The first rotating shaft (4012), the rotating handle (4013) and the first helical gear (4014) are coaxially arranged.

4. The multi-station welding positioning device for automotive suspension brackets according to claim 1, characterized in that: Another mounting bracket (407) has a servo electric cylinder (4022) embedded at one end. A non-circular output shaft (4023) is fixedly connected to the output shaft of the servo electric cylinder (4022), and one end of the non-circular output shaft (4023) is detachably connected to the second rotating clamp (4021) by a fixing bolt (4025). A non-circular adapter hole (4027) is provided on the second rotating shaft (4026), and the non-circular output shaft (4023) is slidably connected to... The second rotating shaft (4026) is fixedly connected to the inner side of the irregular adapter hole (4027), and the irregular output shaft (4023), the second rotating shaft (4026), the irregular adapter hole (4027) and the second helical gear (4028) are coaxially arranged. A symmetrical foot switch (404) is fixedly connected to one side of the upper end of the mounting plate (3), and the foot switch (404) is electrically connected to the corresponding servo electric cylinder (4022).

5. The multi-station welding positioning device for automotive suspension brackets according to claim 1, characterized in that: A removable pad (403) is embedded in the inner side of the second rotating clamp (4021), and a magnetic module (4024) is embedded in the inner side of both the removable pad (403) and the second rotating clamp (4021).

6. A multi-station welding positioning device for automotive suspension brackets according to claim 1 or 4, characterized in that: The upper end of the irregular connecting rod (4061) is fixedly connected to a third helical gear (4063), and the third helical gear (4063) meshes with the first helical gear (4014) and the second helical gear (4028). The first rotating shaft (4012), the second rotating shaft (4026) and the irregular connecting rod (4061) are arranged perpendicularly to each other.

7. The multi-station welding positioning device for automotive suspension brackets according to claim 1, characterized in that: The lower end of the irregular connecting rod (4061) is fitted with an external threaded sleeve rod (4062), and the upper outer side of the external threaded sleeve rod (4062) is threaded with an internal threaded adjusting bushing (4064). The upper inner side of the internal threaded adjusting bushing (4064) is rotatably connected to the lower end of the irregular connecting rod (4061), and the lower end of the external threaded sleeve rod (4062) is fixedly connected with a fourth helical gear (4066).

8. The multi-station welding positioning device for automotive suspension brackets according to claim 7, characterized in that: Rotary seats (4068) are fixedly connected to both sides of the upper end of the mounting plate (3). A connecting shaft (4069) is rotatably connected to each of the rotating seats (4068). A fifth helical gear (4067) is fixedly connected to both ends of the connecting shaft (4069). The fifth helical gear (4067) is meshed with the corresponding fourth helical gear (4066). Open clamping sleeves (4065) are symmetrically and detachably connected to both sides of the upper end of the mounting plate (3). The lower end of the external threaded sleeve rod (4062) is rotatably connected to the inner side of the open clamping sleeve (4065).

9. The multi-station welding positioning device for automotive suspension brackets according to claim 1, characterized in that: The mounting plate (3) has a symmetrical second limiting rod (5023) fixedly connected to the inner side of the sliding adjustment groove. The sliding clamp (5025) is sleeved and connected to the second limiting rod (5023). A pressure spring (5024) is sleeved and connected to the second limiting rod (5023). One end of the pressure spring (5024) abuts against the inner side of the fixed clamp (501), and the other end of the pressure spring (5024) abuts against the corresponding side of the sliding clamp (5025). The upper end of the L-shaped sliding plate (5021) abuts against the other side of the sliding clamp (5025). A second protective friction pad (503) is embedded on the corresponding side of both the fixed clamp (501) and the sliding clamp (5025).

10. The multi-station welding positioning device for automotive suspension brackets according to claim 1, characterized in that: A welding robot (2) is provided on one side of the multi-station limiting guide rail (1), and a protective baffle (6) is provided between the welding robot (2) and the multi-station limiting guide rail (1). The mounting plate (3) is rotatably connected to a plurality of universal casters (7), which are slidably connected to the inner side of the multi-station limiting guide rail (1). The upper end of the multi-station limiting guide rail (1) is fixedly connected to a guide ring (10), and the lower end of the L-shaped slide plate (5021) is rotatably connected to symmetrical mechanical rollers (5022). The mechanical rollers (5022) are slidably connected to the outer side of the guide ring (10). The inner side of the multi-station limiting guide rail (1) is fixedly connected to a traction ring rod (11), and multiple traction vehicles (8) are slidably connected on the traction ring rod (11). A traction rope (9) is sleeved and connected to one side of the traction vehicle (8), and the other end of the traction rope (9) is fixedly connected to one side of the mounting plate (3).

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