A front bumper beam welding fixture assembly

Abstract

The utility model relates to the technical field of automobile welding, especially a front anti-collision beam welding fixture assembly, which comprises a base, a clamping and positioning device and two clamping assemblies. Each clamping assembly comprises, in sequence from the side away from the clamping and positioning device, a first clamping device, a supporting device, a second clamping device, a third clamping device, a fourth clamping device and an end fixing device. The first clamping device comprises a supporting seat, a left clamping mechanism and a right clamping mechanism. The fourth clamping device comprises an inclined frame and a first clamping mechanism. The front anti-collision beam welding fixture assembly disclosed in the application achieves accurate positioning and stable clamping of the front anti-collision beam through the clamping and positioning device and the two symmetrically arranged clamping assemblies. The second clamping device and the third clamping device are arranged in a staggered manner, and the inclined frame is arranged to clamp the arc of the front anti-collision beam, thereby improving the stability of clamping.

Description

Technical Field

[0001] This utility model relates to the field of automotive welding technology, and in particular to a front bumper beam welding fixture assembly. Background Technology

[0002] On automotive welding production lines, the clamping process is completed on welding fixtures, making these fixtures crucial throughout the entire welding process. Traditional fixture structures use locating pins to hold the front bumper beam in place, then tighten it with a handle, pressing the beam down via upper and lower pressure blocks. This method is not conducive to welding work and lacks sufficient positioning accuracy.

[0003] It is evident that existing technologies still need improvement and enhancement. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a front bumper beam welding fixture assembly to solve the problem of poor positioning accuracy of existing front bumper beam fixtures.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A front bumper beam welding fixture assembly includes a base, a clamping and positioning device, and two clamping components. The clamping and positioning device is located at the middle of the base along its length. The two clamping components are symmetrically arranged on both sides of the base along its length relative to the clamping and positioning device. Each clamping component includes a first clamping device, a support device, a second clamping device, a third clamping device, a fourth clamping device, and an end fixing device arranged sequentially on the side away from the clamping and positioning device. The first clamping device includes a support seat, a left clamping mechanism, and a right clamping mechanism. The support seat is located on the base, and the left and right clamping mechanisms are respectively located on both sides of the support seat. The second and third clamping devices are staggered relative to the centerline of the base in the width direction. The fourth clamping device includes a tilting frame and a first clamping mechanism. The tilting frame is located on the base, and the first clamping mechanism is located on the tilting frame.

[0007] As described above, a front bumper beam welding fixture assembly includes a clamping and positioning device comprising two first extension blocks, two positioning posts, a stand, a groove, a support block, two stops, and a second clamping mechanism. The stand is disposed on the base, the groove is disposed on one side of the top of the stand, the support block is disposed in the middle of the groove, the two stops are respectively disposed on the two sides of the groove opposite to the support block, the two first extension blocks are respectively disposed on the two sides of the support block along the length direction of the base, the two positioning posts are respectively disposed on the two ends of the two first extension blocks that are relatively far apart, and the second clamping mechanism is disposed on the top of the stand on the side away from the groove.

[0008] As described above, a front bumper beam welding fixture assembly includes a second clamping mechanism comprising a pressure arm, a pressure block, a swing member, a support member, a limiting component, an L-shaped member, a first connecting member, and a clamping cylinder. The upright has a clearance groove on its side facing away from the groove. The support member is disposed on the clearance groove. The pressure arm is stacked on the upright. One end of the swing member is connected to the pressure arm, and the other end of the swing member is hinged to the top of the upright. The pressure block is disposed within the groove and connected to the pressure arm. The clamping cylinder is hinged to the side of the upright facing away from the groove. Both ends of the L-shaped member are hinged to the support member and the output end of the clamping cylinder, respectively. Both ends of the first connecting member are hinged to the bend of the L-shaped member and the pressure arm, respectively. The limiting component is disposed on the side of the swing member facing the groove, and both ends of the limiting component are connected to the pressure arm and the upright, respectively.

[0009] As described above, a front bumper beam welding fixture assembly includes a limiting component comprising a first limiting member, a second limiting member, a slot, and a protrusion. The first limiting member is disposed on the pressure arm, the second limiting member is disposed on the stand, the slot is disposed on the side of the first limiting member facing the second limiting member, and the protrusion is disposed on the side of the second limiting member facing away from the stand. The slot and the protrusion are engaged.

[0010] As described above, a front bumper beam welding fixture assembly includes a support device comprising two columns, a support cylinder, a concave support block, and a guide mechanism. The two columns are arranged adjacent to each other on the base, the support cylinder is mounted on the two columns, the concave support block is located on the output end of the support cylinder, and the guide mechanism is connected to the concave support block and any one of the columns.

[0011] As described above, a front bumper beam welding fixture assembly includes a guiding mechanism comprising a second extension block, a connecting block, a third extension block, and a guide post. The connecting block is connected to any of the columns. The second extension block is located on the side of the connecting block facing away from any of the columns. The third extension block is located on one side of the concave support block. The guide post passes through the second extension block and is connected to the third extension block.

[0012] As described above, a front bumper beam welding fixture assembly is further provided with a second connector and a positioning pin. The second connector is located on the side of the second clamping device facing the clamping and positioning device. The axis of the positioning pin is perpendicular to the base and the positioning pin is located on the second connector.

[0013] As described above, a front bumper beam welding fixture assembly is further provided with a push cylinder, a connecting seat, and a sensor. The push cylinder is located on the side of the third clamping device facing the clamping and positioning device. The running direction of the push cylinder is parallel to the base. The connecting seat is connected to the output end of the push cylinder. The sensor is located on the side of the connecting seat facing the push cylinder.

[0014] As described above, a front bumper beam welding fixture assembly includes an end fixing device comprising a support base, an inclined plate, a stop hook, a buffer assembly, a fixing cylinder, a connecting plate, two third connecting parts, and two pins. The support base is mounted on the base, the inclined plate is mounted on the support base, the fixing cylinder is mounted on the side of the inclined plate facing away from the support base, one end of the stop hook is connected to the inclined plate, and the other end of the stop hook extends to the side of the output end of the fixing cylinder. The connecting plate is connected to the output end of the fixing cylinder. The two third connecting parts are respectively mounted on the side of the connecting plate facing away from the fixing cylinder. The two pins are respectively mounted on the two third connecting parts. The two ends of the buffer assembly are respectively connected to the connecting plate and the stop hook.

[0015] Beneficial effects:

[0016] This utility model discloses a front bumper beam welding fixture assembly, including a base, a clamping and positioning device, and two clamping components. The clamping and positioning device is located at the middle of the base along its length. The two clamping components are symmetrically arranged on both sides of the base along its length, opposite to the clamping and positioning device. Each clamping component includes a first clamping device, a support device, a second clamping device, a third clamping device, a fourth clamping device, and an end fixing device, arranged sequentially towards the side away from the clamping and positioning device. The first clamping device includes a support seat, a left clamping mechanism, and a right clamping mechanism. The second and third clamping devices are staggered relative to the centerline of the base in its width direction. The fourth clamping device includes a tilting frame and the first clamping mechanism. Using the base as a platform, the clamping and positioning device initially positions and clamps the middle of the front bumper beam. The two ends of the front bumper beam are respectively clamped by the two clamping components. For any side of the front bumper beam, the left clamping mechanism and the right clamping mechanism apply clamping forces on both sides of the front bumper beam respectively. The support seat supports the front bumper beam to prevent it from deforming or sagging. The support device further supports the middle of the front bumper beam on either side of the clamping and positioning device, and clamps it through the staggered second clamping device and the third clamping device to balance the clamping forces on both sides of the front bumper beam and avoid clamping blind spots. The first clamping mechanism is inclined to correspond to the curvature of the front bumper beam through the tilting frame. Finally, the end fixing device fixes the end of the front bumper beam. The front bumper beam welding fixture assembly disclosed in this application achieves precise positioning and stable clamping of the front bumper beam through the clamping and positioning device and the clamping components symmetrically arranged on both sides. Furthermore, the staggered arrangement of the second clamping device and the third clamping device, as well as the arrangement of the tilting frame, fits the curvature of the front bumper beam for clamping, improving the stability of clamping. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the fixture assembly provided by this utility model;

[0018] Figure 2 This is a schematic diagram of the clamping and positioning device provided by this utility model;

[0019] Figure 3 A schematic diagram of the supporting device provided by this utility model;

[0020] Figure 4 A schematic diagram of the end fixing device provided by this utility model;

[0021] Reference numerals: 1. Base; 2. Clamping and positioning device; 21. First extension block; 22. Positioning post; 23. Stand; 24. Groove; 25. Support block; 26. Stop block; 27. Second clamping mechanism; 271. Pressure arm; 272. Pressure block; 273. Swinging component; 274. Height-bearing component; 275. Limiting component; 2751. First limiting component; 2752. Second limiting component; 2753. Slot; 2754. Protrusion; 276. L-shaped component; 277. First connecting component; 278. Clamping cylinder; 28. Clearance groove; 3. First clamping device; 31. Support seat; 32. Left clamping mechanism; 33. Right clamping mechanism; 4. Support... Support device; 41. Column; 42. Support cylinder; 43. Concave support block; 44. Guide mechanism; 45. Second extension block; 46. Connecting block; 47. Third extension block; 48. Guide column; 5. Second clamping device; 6. Third clamping device; 7. Fourth clamping device; 71. Inclined frame; 72. First clamping mechanism; 8. End fixing device; 81. Support seat; 82. Inclined plate; 83. Stop hook; 84. Buffer assembly; 85. Fixing cylinder; 86. Connecting plate; 87. Third connecting piece; 88. Insert pin; 9. Second connecting piece; 10. Positioning pin; 11. Push cylinder; 12. Connecting seat; 13. Sensor. Detailed Implementation

[0022] This utility model provides a front anti-collision beam welding fixture assembly. To make the purpose, technical solution and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments.

[0023] In the description of this utility model, it should be understood that the terms "top" and other terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and should not be construed as limiting this utility model; in addition, the terms "installation" and "connection" should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] like Figures 1-4As shown in the figure, this application proposes a front bumper beam welding fixture assembly, including a base 1, a clamping and positioning device 2, and two clamping components. The clamping and positioning device 2 is located at the middle of the base 1 along its length. The two clamping components are symmetrically arranged on both sides of the base 1 along its length, relative to the clamping and positioning device 2. Each clamping component includes a first clamping device 3, a supporting device 4, a second clamping device 5, a third clamping device 6, a fourth clamping device 7, and an end fixing device 8, arranged sequentially on the side away from the clamping and positioning device 2. The first clamping device 3 includes a support 31, a left clamping mechanism 32, and a right clamping mechanism 33. The support 31 is disposed on the base 1. The left clamping mechanism 32 and the right clamping mechanism 33 are respectively disposed on both sides of the support 31. The second clamping device 5 and the third clamping device 6 are staggered relative to the centerline of the width direction of the base 1. The fourth clamping device 7 includes an inclined frame 71 and a first clamping mechanism 72. The inclined frame 71 is disposed on the base 1, and the first clamping mechanism 72 is disposed on the inclined frame 71.

[0025] This utility model discloses a welding fixture assembly for a front bumper beam, comprising a base 1, a clamping and positioning device 2, and two clamping components. The clamping and positioning device 2 is located at the middle of the base 1 along its length. The two clamping components are symmetrically arranged on both sides of the base 1 along its length, relative to the clamping and positioning device 2. Each clamping component includes a first clamping device 3, a supporting device 4, a second clamping device 5, a third clamping device 6, a fourth clamping device 7, and an end fixing device 8, arranged sequentially on the side away from the clamping and positioning device 2. The first clamping device 3 includes a supporting seat 31, a left clamping mechanism 32, and a right clamping mechanism 33. The second clamping device 5 and the third clamping device 6 are staggered relative to the centerline of the width direction of the base 1. The fourth clamping device 7 includes a tilting frame 71 and the first clamping mechanism 72. Using the base 1 as a platform, the clamping and positioning device 2 initially positions and clamps the middle of the front bumper beam, while the two ends of the front bumper beam are respectively clamped by the two clamping components. Specifically, for any one side of the front bumper beam, the left clamping mechanism 32 and the right clamping mechanism 33 apply clamping forces to both sides of the front bumper beam, respectively. The support seat 31 supports the front bumper beam to prevent deformation or sagging. The support device 4 further supports the middle of the front bumper beam on either side of the clamping and positioning device 2, and clamps it through the staggered second clamping device 5 and the third clamping device 6 to balance the clamping forces on both sides of the front bumper beam and avoid clamping blind spots. The first clamping mechanism 7... 2. The tilting frame 71 is tilted to correspond to the curvature of the front bumper beam, and finally the end fixing device 8 fixes the end of the front bumper beam. The front bumper beam welding fixture assembly disclosed in this application achieves precise positioning and stable clamping of the front bumper beam through the clamping and positioning device 2 and the clamping components symmetrically arranged on both sides; and the staggered arrangement of the second clamping device 5 and the third clamping device 6, as well as the setting of the tilting frame 71, fits the curvature of the front bumper beam for clamping, improving the stability of clamping.

[0026] The clamping and positioning device 2 includes two first extension blocks 21, two positioning posts 22, a stand 23, a groove 24, a support block 25, two stops 26, and a second clamping mechanism 27. The stand 23 is mounted on the base 1. The groove 24 is located on one side of the top of the stand 23. The support block 25 is located in the middle of the groove 24. The two stops 26 are respectively located on the two sides of the groove 24 opposite to the support block 25. The two first extension blocks 21 are respectively located on both sides of the support block 25 along the length direction of the base 1. The positioning posts 22 are respectively located at the two ends of the first extension blocks 21 that are relatively far apart. The second clamping mechanism 27 is located on the top of the stand 23 on the side away from the groove 24. The support block 25 supports the middle of the front anti-collision beam. The two stops 26 restrict the front anti-collision beam from moving along the width direction of the base 1. The two positioning posts 22 pass through the holes of the front anti-collision beam, restricting the front anti-collision beam from moving along the length direction of the base 1. The second clamping mechanism 27 presses the front anti-collision beam downward, thereby realizing the clamping and positioning of the front anti-collision beam.

[0027] The second clamping mechanism 27 includes a pressure arm 271, a pressure block 272, a swing member 273, a support member 274, a limiting component 275, an L-shaped member 276, a first connecting member 277, and a clamping cylinder 278. The stand 23 has a clearance groove 28 on the side facing away from the groove 24. The support member 274 is disposed on the clearance groove 28. The pressure arm 271 is stacked on the stand 23. One end of the swing member 273 is connected to the pressure arm 271. The other end of the swing member 273 is hinged to the top of the stand 23. The pressure block 272 is located in the groove 24 and connected to the pressure arm 271. The clamping cylinder 278 is hinged to the side of the stand 23 facing away from the groove 24. The two ends of the L-shaped member 276 are respectively hinged to the supporting member 274 and the output end of the clamping cylinder 278. The two ends of the first connecting member 277 are respectively connected to the bend of the L-shaped member 276 and the... The pressure arm 271 is hinged, and the limiting component 275 is located on the side of the swing member 273 facing the groove 24. The two ends of the limiting component 275 are respectively connected to the pressure arm 271 and the stand 23, and are driven by the pressing cylinder 278. The swing member 273 and the support member 274 serve as the swing centers of the pressure arm 271 and the L-shaped member 276, respectively. Through the transmission of the L-shaped member 276 and the first connecting member 277, the pressure arm 271 is driven to swing. The pressing block 272 follows the swing of the pressure arm 271 to press against the front anti-collision beam. During the downward pressing of the pressure arm 271, the limiting component 275 can be made of rubber. The limiting component 275 restricts the swing of the pressure arm 271 and provides a buffer for the pressure arm 271. The pressing cylinder 278 is set to realize automatic pressing or releasing, reduce the labor intensity of workers, and ensure uniform pressing force.

[0028] The limiting component 275 includes a first limiting member 2751, a second limiting member 2752, a slot 2753, and a protrusion 2754. The first limiting member 2751 is disposed on the pressure arm 271, and the second limiting member 2752 is disposed on the stand 23. The slot 2753 is disposed on the side of the first limiting member 2751 facing the second limiting member 2752, and the protrusion 2754 is disposed on the side of the second limiting member 2752 facing away from the stand 23. The slot 2753 and the protrusion 2754 are engaged. The engagement of the slot 2753 and the protrusion 2754 ensures that the pressure arm 271 is in the same pressing position each time, and restricts the pressure arm 271 from moving along the length direction of the base 1 during the pressing process, thus preventing misalignment between the pressure block 272 and the support block 25 and affecting the clamping.

[0029] The supporting device 4 includes two columns 41, a supporting cylinder 42, a concave supporting block 43, and a guiding mechanism 44. The two columns 41 are arranged adjacently on the base 1. The supporting cylinder 42 is mounted on the two columns 41. The concave supporting block 43 is located on the output end of the supporting cylinder 42. The guiding mechanism 44 is connected to the concave supporting block 43 and one of the columns 41 respectively. The height of the concave supporting block 43 is adjusted by the supporting cylinder 43 to support the front anti-collision beam, and the direction of movement of the concave supporting block 43 is restricted by the guiding mechanism 44. The guiding mechanism 44 includes... The device includes a second extension block 45, a connecting block 46, a third extension block 47, and a guide post 48. The connecting block 46 is connected to any of the uprights 41. The second extension block 45 is located on the side of the connecting block 46 facing away from any of the uprights 41. The third extension block 47 is located on one side of the concave support block 43. The guide post 48 passes through the second extension block 45 and connects to the third extension block 47. On the one hand, it guides the movement of the concave support block 43. On the other hand, it strengthens the connection between the concave support block 43 and the uprights 41, thereby improving the stability of the concave support block 43 when it supports the object.

[0030] The clamp assembly also includes a second connector 9 and a positioning pin 10. The second connector 9 is located on the side of the second clamping device 5 facing the clamping and positioning device 2. The axis of the positioning pin 10 is perpendicular to the base 1. The positioning pin 10 is located on the second connector 9 and is inserted into the hole of the front anti-collision beam. In conjunction with the clamping of the second clamping device 5, the double fixing structure improves the stability of the clamping.

[0031] The clamp assembly also includes a push cylinder 11, a connecting seat 12, and a sensor 13. The push cylinder 11 is located on the side of the third clamping device 6 facing the clamping and positioning device 2. The running direction of the push cylinder 11 is parallel to the base 1. The connecting seat 12 is connected to the output end of the push cylinder 11. The sensor 13 is located on the side of the connecting seat 12 facing the push cylinder 11. The push cylinder 11 drives the sensor 13 to move, which can sense the position of the front anti-collision beam at any time during the clamping process, thereby improving the positioning accuracy and facilitating welding work.

[0032] The end fixing device 8 includes a support base 81, an inclined plate 82, a stop hook 83, a buffer assembly 84, a fixing cylinder 85, a connecting plate 86, two third connecting pieces 87, and two insertion pins 88. The support base 81 is mounted on the base 1, the inclined plate 82 is mounted on the support base 81, the fixing cylinder 85 is mounted on the side of the inclined plate 82 facing away from the support base 81, one end of the stop hook 83 is connected to the inclined plate 82, and the other end of the stop hook 83 extends to the side of the output end of the fixing cylinder 85. The connecting plate 86 is connected to the output end of the fixing cylinder 85. The two third connecting pieces 87 are respectively mounted on the support base 1. On the side of the connecting plate 86 facing away from the fixing cylinder 85, two insertion pins 88 are respectively disposed on the two third connecting members 87. The two ends of the buffer assembly 84 are respectively connected to the connecting plate 86 and the stop hook 83. The structure of the buffer assembly 84 is the same as that of the limiting assembly 275. The fixing cylinder 85 drives the two third connecting members 87 to move so that the two insertion pins 88 are respectively inserted into the holes at the ends of the front anti-collision beam to fix the ends of the front anti-collision beam. The stop hook 83 restricts the movement of the connecting plate 86 to prevent the connecting plate 86 from moving excessively and causing a collision or compression with the front anti-collision beam.

[0033] In this embodiment of the application, the stand 23, the groove 24, the support block 25, the two stops 26 and the second clamping mechanism 27 form a clamping group, and the structure of the first clamping mechanism 72, the left clamping mechanism 32, the right clamping mechanism, the second clamping device 5 and the third clamping device 6 is consistent with the structure of the clamping group.

[0034] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of this utility model.

Claims

1. A front bumper beam welding fixture assembly, characterized in that, The device includes a base (1), a clamping and positioning device (2), and two clamping components. The clamping and positioning device (2) is located at the middle of the base (1) along its length. The two clamping components are symmetrically arranged on both sides of the base (1) along its length, relative to the clamping and positioning device (2). Each clamping component includes a first clamping device (3), a support device (4), a second clamping device (5), a third clamping device (6), a fourth clamping device (7), and an end fixing device (8) arranged sequentially on the side away from the clamping and positioning device (2). The first clamping device (3) includes a support base (3). 1) Left clamping mechanism (32) and right clamping mechanism (33), the support seat (31) is provided on the base (1), the left clamping mechanism (32) and the right clamping mechanism (33) are respectively provided on both sides of the support seat (31), the second clamping device (5) and the third clamping device (6) are staggered relative to the center line of the width direction of the base (1), the fourth clamping device (7) includes an inclined frame (71) and a first clamping mechanism (72), the inclined frame (71) is provided on the base (1), and the first clamping mechanism (72) is provided on the inclined frame (71).

2. The front bumper beam welding fixture assembly according to claim 1, characterized in that, The clamping and positioning device (2) includes two first extension blocks (21), two positioning posts (22), a stand (23), a groove (24), a support block (25), two stops (26), and a second clamping mechanism (27). The stand (23) is located on the base (1). The groove (24) is located on one side of the top of the stand (23). The support block (25) is located in the middle of the groove (24). The two stops (26) are respectively located on the two sides of the groove (24) opposite to the support block (25). The two first extension blocks (21) are respectively located on both sides of the support block (25) along the length direction of the base (1). The two positioning posts (22) are respectively located at the ends of the two first extension blocks (21) that are relatively far apart. The second clamping mechanism (27) is located on the top of the stand (23) on the side away from the groove (24).

3. The front bumper beam welding fixture assembly according to claim 2, characterized in that, The second clamping mechanism (27) includes a pressure arm (271), a pressure block (272), a swing member (273), a support member (274), a limiting component (275), an L-shaped member (276), a first connecting member (277), and a clamping cylinder (278). The stand (23) has a relief groove (28) on the side facing away from the groove (24). The support member (274) is located on the relief groove (28). The pressure arm (271) is stacked on the stand (23). One end of the swing member (273) is connected to the pressure arm (271), and the other end of the swing member (273) is hinged to the top of the stand (23). The pressure block (272) is located on the side facing away from the groove (24). 2) The clamping cylinder (278) is located in the groove (24) and connected to the pressure arm (271). The clamping cylinder (278) is hinged to the side of the stand (23) facing away from the groove (24). The two ends of the L-shaped member (276) are respectively hinged to the output end of the support member (274) and the clamping cylinder (278). The two ends of the first connecting member (277) are respectively hinged to the bend of the L-shaped member (276) and the pressure arm (271). The limiting component (275) is located on the side of the swing member (273) facing the groove (24). The two ends of the limiting component (275) are respectively connected to the pressure arm (271) and the stand (23).

4. The front bumper beam welding fixture assembly according to claim 3, characterized in that, The limiting component (275) includes a first limiting member (2751), a second limiting member (2752), a slot (2753), and a protrusion (2754). The first limiting member (2751) is disposed on the pressure arm (271), the second limiting member (2752) is disposed on the stand (23), the slot (2753) is disposed on the side of the first limiting member (2751) facing the second limiting member (2752), and the protrusion (2754) is disposed on the side of the second limiting member (2752) facing away from the stand (23). The slot (2753) and the protrusion (2754) are engaged.

5. The front bumper beam welding fixture assembly according to claim 1, characterized in that, The supporting device (4) includes two columns (41), a supporting cylinder (42), a concave supporting block (43), and a guiding mechanism (44). The two columns (41) are arranged adjacently on the base (1). The supporting cylinder (42) is mounted on the two columns (41). The concave supporting block (43) is located on the output end of the supporting cylinder (42). The guiding mechanism (44) is connected to the concave supporting block (43) and any of the columns (41) respectively.

6. The front bumper beam welding fixture assembly according to claim 5, characterized in that, The guiding mechanism (44) includes a second extension block (45), a connecting block (46), a third extension block (47), and a guide post (48). The connecting block (46) is connected to any of the columns (41). The second extension block (45) is located on the side of the connecting block (46) facing away from any of the columns (41). The third extension block (47) is located on one side of the concave support block (43). The guide post (48) passes through the second extension block (45) and is connected to the third extension block (47).

7. The front bumper beam welding fixture assembly according to claim 1, characterized in that, The clamp assembly is also provided with a second connector (9) and a positioning pin (10). The second connector (9) is located on the side of the second clamping device (5) facing the clamping positioning device (2). The axis of the positioning pin (10) is perpendicular to the base (1). The positioning pin (10) is located on the second connector (9).

8. The front bumper beam welding fixture assembly according to claim 1, characterized in that, The clamp assembly is also provided with a push cylinder (11), a connecting seat (12) and a sensor (13). The push cylinder (11) is located on the side of the third clamping device (6) facing the clamping and positioning device (2). The running direction of the push cylinder (11) is parallel to the base (1). The connecting seat (12) is connected to the output end of the push cylinder (11). The sensor (13) is located on the side of the connecting seat (12) facing the push cylinder (11).

9. The front bumper beam welding fixture assembly according to claim 1, characterized in that, The end fixing device (8) includes a support base (81), an inclined plate (82), a stop hook (83), a buffer assembly (84), a fixing cylinder (85), a connecting plate (86), two third connecting parts (87), and two insertion pins (88). The support base (81) is mounted on the base (1), the inclined plate (82) is mounted on the support base (81), and the fixing cylinder (85) is located on the side of the inclined plate (82) facing away from the support base (81). One end of the stop hook (83) is connected to the inclined plate. (82) The other end of the stop hook (83) extends to one side of the output end of the fixed cylinder (85). The connecting plate (86) is connected to the output end of the fixed cylinder (85). The two third connecting pieces (87) are respectively disposed on the side of the connecting plate (86) facing away from the fixed cylinder (85). The two insertion pins (88) are respectively disposed on the two third connecting pieces (87). The two ends of the buffer assembly (84) are respectively connected to the connecting plate (86) and the stop hook (83).

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