Automobile front auxiliary frame welding table

Abstract

The utility model relates to an automobile front auxiliary frame welding table which comprises a frame, a rotary table is connected to the center of the frame, welding robots which are symmetrically distributed in the length direction of the frame are arranged in the middle of the frame, and position changing machines which are symmetrically arranged in the width direction of the frame are installed on the frame. The positioner is provided with a clamp assembly used for clamping all parts of the automobile front auxiliary frame. The positioner drives the clamp assembly to rotate in the length direction of the frame and is matched with the welding robot to expand the welding working range of the welding robot. The relative positions of the welding robot and the clamp assembly are kept unchanged in the mode that the welding robot and the positioner are combined, errors caused by rotation can be eliminated, the precision is improved, welding can be started in the rotation process of the positioner, and the production takt is improved; the welding table can start welding in the rotating process of the clamp assembly, and time is saved.

Description

Technical Field

[0001] The utility model relates to the field of automobile parts processing equipment, in particular to an automobile front auxiliary frame welding platform. Background Art

[0002] At present, many welding workstations in the industry use fixed robots. Although this method is easy to install, the robot must wait until the positioner rotates into place before starting welding, which wastes time. In addition, the rotation of the positioner will also produce errors, resulting in a high frequency of weld correction. In order to solve the above problems, a front subframe welding station for automobiles was designed and developed. Summary of the invention

[0003] In order to solve the above technical problems, the utility model proposes a welding platform for the front auxiliary frame of an automobile.

[0004] The technical problem to be solved by the utility model is achieved by the following technical solutions:

[0005] A front subframe welding station for automobiles comprises a frame, a turntable is connected at the center of the frame, a welding robot symmetrically distributed along the length direction of the frame is arranged in the middle of the frame, a positioner symmetrically arranged along the width direction of the frame is installed on the frame, and a clamp assembly for clamping various parts of the front subframe of the automobile is arranged on the positioner; the clamp assembly is driven by the positioner to rotate along the length direction of the frame and cooperate with the welding robot to expand the welding working range of the welding robot.

[0006] The beneficial effects of the utility model are as follows: the utility model combines the welding robot with the positioner to keep the relative positions of the welding robot and the fixture assembly unchanged, thereby eliminating the error caused by rotation and improving the accuracy; welding can also be started during the rotation of the positioner, thereby improving the production rhythm; this welding table can start welding during the rotation of the fixture assembly, saving time. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0008] Figure 1 The three-dimensional structure of the utility model is shown in FIG. Figure 1 ;

[0009] Figure 2 The three-dimensional structure of the utility model is shown in FIG. Figure 2 ;

[0010] Figure 3 The three-dimensional structure of the clamping platform No. 1 of the utility model is shown in FIG. Figure 1 ;

[0011] Figure 4This is a schematic diagram of the three-dimensional structure of the second clamping platform of the utility model;

[0012] Figure 5 The three-dimensional structure diagram of the first positioning and clamping assembly of the utility model is shown in FIG. Figure 1 ;

[0013] Figure 6 The three-dimensional structure diagram of the first positioning and clamping assembly of the utility model is shown in FIG. Figure 2 ;

[0014] Figure 7 The three-dimensional structure of the cylinder No. 1 of the utility model is shown in FIG. Figure 1 ;

[0015] Figure 8 The three-dimensional structure of the cylinder No. 1 of the utility model is shown in FIG. Figure 2 ;

[0016] Fig. 9 This is a schematic diagram of the three-dimensional structure of the second positioning and clamping assembly of the utility model;

[0017] Fig.10 This is a schematic diagram of the three-dimensional structure of the No. 2 support seat of the utility model;

[0018] Fig.11 The three-dimensional structure diagram of the fourth positioning and clamping assembly of the utility model is shown in FIG. Figure 1 ;

[0019] Fig.12 The three-dimensional structure diagram of the fourth positioning and clamping assembly of the utility model is shown in FIG. Figure 2 ;

[0020] Fig.13 The three-dimensional structure diagram of the fourth positioning and clamping assembly of the utility model is shown in FIG. Figure 3 ;

[0021] Fig.14 The three-dimensional structure diagram of the sixth positioning and clamping assembly of the utility model is shown in FIG. Figure 1 ;

[0022] Fig.15 The three-dimensional structure diagram of the sixth positioning and clamping assembly of the utility model is shown in FIG. Figure 2 ;

[0023] Fig.16 This is a schematic diagram of the three-dimensional structure of the No. 5 cylinder of the utility model;

[0024] Fig.17 The three-dimensional structure diagram of the No. 8 positioning and clamping mechanism of the utility model Figure 1 ;

[0025] Fig.18 The three-dimensional structure diagram of the No. 8 positioning and clamping mechanism of the utility model Figure 2 ;

[0026] Fig.19 This is a schematic diagram of the three-dimensional structure of the No. 7 positioning and clamping assembly of the utility model;

[0027] Fig. 20 It is a schematic diagram of the three-dimensional structure of the support platform of the utility model.

[0028] As shown in the figure: 1. Frame; 2. Turntable; 3. Welding robot; 4. Positioner; 5. Fixture assembly; 6. No. 4 transfer rod; 7. Support table; 8. No. 3 limit block; 9. No. 10 clamping block; 10. No. 8 transfer rod; 11. No. 6 flip cylinder; 12. No. 11 clamping block; 13. No. 12 clamping block; 14. No. 2 support seat; 15. Limit rod; 16. No. 10 positioning pin; 51. No. 1 clamping table; 52. No. 2 clamping table; 53. Connecting plate; 54. Rocker; 55. No. 2 transfer rod; 56. No. 3 transfer rod; 57. No. 6 flip cylinder; 58. Moving table; 59. No. 7 cylinder; 5 11. Positioning and clamping assembly No. 1; 512. Positioning and clamping assembly No. 2; 513. Positioning and clamping assembly No. 3; 5111. Positioning pin No. 1; 5112. Support column No. 1; 5113. Cylinder No. 1; 5114. Clamping block No. 1; 5115. Pad; 5116. Pressing block No. 1; 5117. Flipping cylinder No. 1; 5118. Positioning pin No. 2; 5121. Positioning pin No. 3; 5122. Support column No. 2; 5123. Pressing block No. 2; 5124. Cylinder No. 2; 5131. Positioning pin No. 4; 5132. Cylinder No. 3; 5133. Clamping block No. 3; 5134. Cylinder; 521, No. 4 positioning clamping assembly; 522, No. 5 positioning clamping assembly; 523, No. 6 positioning clamping assembly; 524, No. 7 positioning clamping assembly; 525, No. 8 positioning clamping mechanism; 5211, No. 5 positioning pin; 5212, No. 3 support column; 5213, No. 4 clamping block; 5214, No. 2 flip cylinder; 5215, No. 5 transfer rod; 5221, No. 6 positioning pin; 5222, No. 1 limit block; 5223, No. 4 support column; 5224, No. 6 flip cylinder; 5225, No. 6 transfer rod; 5231, No. 7 positioning pin; 5232, No. 2 limit block; 523 3. Clamping block No. 5; 5234. Cylinder No. 5; 5235. Flipping cylinder No. 3; 5236. Support seat No. 3; 5237. Support column No. 9; 5241. Positioning pin No. 9; 5242. Support seat No. 1; 5243. Clamping block No. 8; 5244. Flipping cylinder No. 5; 5245. Clamping block No. 9; 5246. Transfer rod No. 7; 5251. Positioning pin No. 8; 5252. Flipping cylinder No. 4; 5253. Transfer rod No. 1; 5254. Clamping block No. 6; 5255. Clamping block No. 7; 5256. Support column No. 5; 5257. Clamping plate; 5258. Cylinder No. 6. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described more clearly and completely below in conjunction with the drawings in the embodiments. Of course, the described embodiments are only a part of the present invention but not all of it. Based on this embodiment, other embodiments obtained by those skilled in the art without creative labor are all within the protection scope of the present invention.

[0030] like Figures 1 to 20 As shown, a front subframe welding station for automobiles comprises a frame 1, a turntable 2 is connected at the center of the frame 1, a welding robot 3 symmetrically distributed along the length direction of the frame 1 is arranged in the middle of the frame 1, a positioner 4 symmetrically arranged along the width direction of the frame 1 is installed on the frame 1, and a fixture assembly 5 for clamping various parts of the front subframe of the automobile is arranged on the positioner 4; the fixture assembly 5 is driven by the positioner 4 to rotate along the length direction of the frame 1 and cooperate with the welding robot 3 to expand the welding working range of the welding robot 3.

[0031] The clamp assembly 5 includes a No. 1 clamping table 51 and a No. 2 clamping table 52 connected to the corresponding positioner 4; the positioner 4 drives the corresponding No. 1 clamping table 51 and No. 2 clamping table 52 to rotate, so that the relative positions of the welding robot 3 and the No. 1 clamping table 51 and No. 2 clamping table 52 remain unchanged, thereby expanding the welding range of the welding robot 3; the No. 1 clamping table 51 is provided with a No. 1 positioning clamping assembly 511 which is respectively positioned and clamped with the left and right longitudinal beam assemblies and is symmetrically arranged along the length direction of the No. 1 clamping table 51, and the No. 2 positioning clamping assembly 512 supporting the front connecting plate of the subframe is distributed between the No. 1 positioning clamping assembly 511, and the No. 1 clamping table 51 is provided with a clamping plate for clamping the reinforcing plate inside the rear suspension bracket and enabling the rear suspension A No. 3 positioning and clamping component 513 is used to match the inner reinforcement plate of the bracket with the front connecting plate of the subframe; the No. 2 clamping platform 52 is provided with a No. 4 positioning and clamping component 521 which respectively positions and clamps the upper plates of the left and right longitudinal beams and is symmetrically arranged along the length direction of the No. 2 clamping platform 52; the No. 2 clamping platform 52 is also provided with a No. 5 positioning and clamping component 522 which fixes the inner reinforcement plate of the longitudinal beam to the upper plates of the left and right longitudinal beams; a No. 6 positioning and clamping component 523 which positions and clamps the front connecting plate assembly of the subframe is distributed between the No. 4 positioning and clamping components 521; a No. 7 positioning and clamping component 524 which is symmetrically arranged along the length direction of the No. 2 clamping platform 52 to match the lower connecting plate of the front collision bracket with the body mounting sleeve is distributed at the front end of the No. 2 clamping platform 52. The No. 1 positioning clamping assembly 511 cooperates with the No. 1 positioning pin 5111 of the front and rear positioning holes of the left and right longitudinal beam lower sheet and the No. 1 supporting column 5112 that abuts against the left and right longitudinal beam lower sheet to support the left and right longitudinal beam lower sheet. The No. 1 clamping platform 51 is provided with two No. 1 cylinders 5113 distributed along the width direction of the No. 1 clamping platform 51. The No. 1 cylinder 5113 is provided with a No. 1 clamping block 5114 for clamping the left and right longitudinal beam lower sheet. The No. 1 clamping block 5116 is distributed to compress the front and rear middle parts of the left and right longitudinal beams, the No. 1 clamping platform 51 is provided with a No. 1 flipping cylinder 5117 which cooperates with the corresponding No. 1 clamping block 5116, the No. 1 clamping platform 51 is provided with a No. 2 positioning pin 5118 which cooperates with the middle positioning hole of the left and right longitudinal beams, and the No. 1 clamping platform 51 is provided with a pad 5115 which extends into the upper and lower plates of the left and right longitudinal beams to ensure the installation position of the upper and lower plates of the left and right longitudinal beams. Each No. 1 cylinder 5113 is connected to a pair of No. 1 clamping blocks 5114, and the No. 1 clamping blocks 5114 are symmetrically arranged to clamp the upper and lower sides of the left and right longitudinal beams. The No. 1 cylinder 5113 is provided with an upper connecting plate 53, and the No. 1 clamping blocks 5114 are rotatably installed at both ends of the connecting plate 53. The ends of the No. 1 clamping blocks 5114 are hingedly connected to a rocker rod 54, and the end of the rocker rod 54 away from the No. 1 clamping block 5114 is hingedly connected to the end of the piston rod of the No. 1 cylinder 5113.The lifting of the No. 1 cylinder 5113 drives the swing rod 54 to swing, and the swing rod 54 drives the No. 1 clamping block 5114 to rotate around the hinge point of the connecting plate 53 to clamp the lower plates of the left and right longitudinal beams; such as. Figures 5 and 6 As shown, each longitudinal beam lower plate is equipped with two No. 1 cylinders 5113, one of which is arranged in the horizontal direction and the other is arranged at an angle to adapt to the shape of the longitudinal beam lower plate; the cross-section of the No. 1 clamping block 5114 is L-shaped.

[0032] like Figures 5 and 6 As shown, the No. 1 flip cylinder 5117 is provided with three, which respectively compress the front and rear middle parts of the longitudinal beam upper sheet. The No. 1 flip cylinder 5117 is provided with a No. 2 transfer rod 55 to connect the No. 1 clamping block 5116. The No. 1 clamping block 5116 distributed in the front part of the longitudinal beam upper sheet has a U-shaped cross section, and there are two clamping points to compress the front part of the longitudinal beam upper sheet; the No. 1 clamping block 5116 distributed in the middle of the longitudinal beam upper sheet has an L-shaped cross section, and is divided along the length direction of the longitudinal beam upper sheet. The cloth is used to press the middle part of the upper sheet of the longitudinal beam; two No. 1 pressing blocks 5116 are arranged at the rear part of the upper sheet of the longitudinal beam, and the cross-sections of the two No. 1 pressing blocks 5116 are U-shaped and L-shaped respectively. Since there is a corner at the rear part of the upper sheet of the longitudinal beam, two No. 1 pressing blocks 5116 are used to cooperate with each other, and the rear part of the upper sheet of the longitudinal beam is pressed by three pressing points; the No. 2 positioning pin 5118 is connected to the No. 3 transfer rod 56, and the No. 3 transfer rod 56 is connected to the No. 6 flip cylinder 57 installed on the No. 1 clamping table 51.

[0033] like Figures 5 and 6 As shown, the pad block 5115 is distributed at the rear part of the upper plate of the longitudinal beam and extends into the area surrounded by the upper and lower plates of the longitudinal beam; the pad block 5115 is cooperated with a moving table 58 installed on the No. 1 clamping table 51, and the No. 1 clamping table 51 is provided with a No. 7 cylinder 59 which is connected to the moving table 58 to drive the moving table 58 to slide along the length direction of the No. 1 clamping table 51.

[0034] The No. 2 positioning clamping assembly 512 includes a No. 3 positioning pin 5121 that cooperates with the positioning points at both ends of the front connecting plate of the sub-frame, and a No. 2 support column 5122 that supports the front connecting plate of the sub-frame is distributed between the No. 3 positioning pin 5121. The No. 1 clamping platform 51 is provided with a No. 2 clamping block 5123 that clamps the two ends of the front connecting plate of the sub-frame respectively, and the No. 2 clamping block 5123 cooperates with a No. 2 cylinder 5124 installed on the No. 1 clamping platform 51.

[0035] The No. 3 locating pins 5121 are provided with two along the width direction of the No. 1 clamping platform 51 and are fixed on the No. 1 clamping platform 51. The No. 2 supporting columns 5122 are provided with four, which are arranged in groups of two to support the front connecting plate of the sub-frame. The No. 2 clamping block 5123 is hingedly installed on the No. 1 clamping platform 51. The end of the piston rod of the No. 2 cylinder 5124 is hingedly connected to the No. 2 clamping block 5123. The No. 2 cylinder 5124 is distributed along the vertical direction. The No. 2 cylinder 5124 pushes the No. 2 clamping block 5123 to rotate around the hinge point, so that the No. 2 clamping block 5123 presses the front connecting plate of the sub-frame.

[0036] The No. 3 positioning clamping assembly 513 is distributed above the No. 3 positioning pin 5121 to cooperate with the No. 4 positioning pin 5131 in the rear suspension bracket inner reinforcement plate. The No. 4 positioning pins 5131 are all matched with the No. 3 cylinder 5132 installed on the No. 1 clamping platform 51 to drive the rear suspension bracket inner reinforcement plate to move to the sub-frame front connecting plate. The No. 3 clamping block 5133 is distributed above the No. 4 positioning pin 5131 to clamp the rear suspension bracket inner reinforcement plate. The No. 3 clamping block 5133 is connected to the No. 4 cylinder 5134 that drives the No. 3 clamping block 5133 to flip.

[0037] There are two No. 3 positioning and clamping components 513 symmetrically arranged along the width direction of the No. 1 clamping platform 51, and each No. 3 positioning and clamping component 513 contains two No. 4 positioning pins 5131. The No. 3 cylinder 5132 is provided with a No. 4 transfer rod 6, the No. 3 clamping block 5133 is hingedly mounted on the No. 4 transfer rod 6, and the No. 4 cylinder 5134 is installed on the No. 4 transfer rod 6. The end of the piston rod of the No. 4 cylinder 5134 slides with the No. 3 clamping block 5133, and the No. 4 positioning pin 5131 is distributed below the No. 4 cylinder 5134 and is connected to the No. 4 transfer rod 6; the No. 3 cylinder 5132 drives the No. 4 positioning pin 5131 to move to the position of the front connecting plate of the sub-frame, and the inner reinforcement plate of the rear suspension bracket is manually placed on the No. 4 positioning pin 5131, and then the No. 4 cylinder 5134 pushes the No. 3 clamping block 5133 to rotate around the hinge point to clamp the inner reinforcement plate of the rear suspension bracket. The No. 1 clamping table 51 is also provided with a No. 2 support seat 14 for supporting the right front suspension bracket, and the No. 2 support seat 14 is provided with a limiting rod 15 that passes through the right front suspension bracket, and a bolt that fits with the right front suspension bracket is installed at the end of the limiting rod 15. The right front suspension bracket and the bolt are fixed by the limiting rod 15 to ensure that the welding position of the right front suspension bracket and the bolt by the welding robot 3 is accurate, thereby preventing the right front suspension bracket and the bolt from loosening after welding. The No. 4 positioning clamping assembly 521 includes a No. 5 positioning pin 5211 which is symmetrically distributed along the length direction of the No. 2 clamping platform 52 and installed on the No. 2 clamping platform 52 to cooperate with the front and rear positioning holes of the upper sheet of the longitudinal beam. The No. 2 clamping platform 52 is provided with a No. 4 clamping block 5213 which will respectively clamp the front and rear ends of the upper sheet of the longitudinal beam. The No. 2 clamping platform 52 is provided with a No. 3 support column 5212 which corresponds to the No. 4 clamping block 5213 one by one to support the upper sheet of the longitudinal beam. The No. 4 clamping blocks 5213 are all matched with the No. 2 flip cylinder 5214 arranged on the No. 2 clamping platform 52.

[0038] There are two No. 2 flipping cylinders 5214 arranged along the width direction of the No. 2 clamping platform 52, and the No. 2 clamping platform 52 is provided with a No. 5 transfer rod 5215 connected with the No. 4 clamping block 5213, and there are two No. 4 clamping blocks 5213 arranged along the length direction of the No. 4 clamping blocks 5213; after the upper sheet of the longitudinal beam cooperates with the No. 5 positioning pin 5211, the No. 2 flipping cylinder 5214 drives the No. 5 transfer rod 5215 to rotate, so that the No. 4 clamping block 5213 cooperates and presses against the upper surface of the upper sheet of the longitudinal beam, and the position of the upper sheet of the longitudinal beam is fixed by the cooperation of the No. 4 clamping block 5213 and the No. 3 support column 5212.

[0039] The No. 5 positioning clamping assembly 522 includes a No. 6 positioning pin 5221 distributed between the No. 5 positioning pin 5211 to limit the inner reinforcement plate of the longitudinal beam, and No. 1 limiting blocks 5222 that are adapted to the shape of the inner reinforcement plate of the longitudinal beam to ensure the installation position are distributed on both sides of the No. 6 positioning pin 5221, and No. 4 supporting columns 5223 are distributed on both sides of the No. 6 positioning pin 5221 to press the inner reinforcement plate of the longitudinal beam so that the inner reinforcement plate of the longitudinal beam fits with the upper sheet of the longitudinal beam, and the No. 6 turning cylinder 5224 connected to the No. 6 positioning pin 5221 is provided on the No. 2 clamping platform 52, and the No. 6 turning cylinder 5224 is provided with a No. 6 transfer rod 5225 connected to the No. 6 positioning pin 5221, and the No. 2 clamping platform 52 is provided with a No. 4 The No. 3 support column 5212 supports the upper sheet of the longitudinal beam in a one-to-one manner; the No. 4 support column 5223 and the No. 1 limit block 5222 are both mounted on the No. 6 transfer rod 5225, and the No. 1 limit block 5222 fits the surface of the inner reinforcement plate of the longitudinal beam to prevent the inner reinforcement plate of the longitudinal beam from being installed in the wrong direction; the No. 6 flip cylinder 5224 drives the No. 6 transfer rod 5225 to rotate, so that the No. 6 positioning pin 5221 cooperates with the inner reinforcement plate of the longitudinal beam, and the positions of the inner reinforcement plate of the longitudinal beam and the upper sheet of the longitudinal beam are fixed through the cooperation of the No. 4 support column 5223 and the No. 3 support column 5212; the No. 6 positioning pin 5221, the No. 1 limit block 5222 and the No. 4 support column 5223 are all mounted on the No. 6 transfer rod 5225.

[0040] The No. 6 positioning clamping assembly 523 includes a No. 7 positioning pin 5231 symmetrically arranged along the length direction of the No. 2 clamping platform 52 to position the rear lower plate of the sub-frame, and the No. 2 clamping platform 52 is symmetrically arranged along the width direction with a No. 2 limit block 5232 that abuts against the side of the rear lower plate of the sub-frame to limit the rear lower plate of the sub-frame, and the No. 8 positioning clamping mechanism 525 symmetrically arranged along the width direction to respectively make the two front connecting plates of the sub-frame match with the rear lower plate of the sub-frame, and the No. 5 clamping block 5233 symmetrically arranged along the length direction of the No. 2 clamping platform 52 to make the steering gear mounting sleeve match is distributed on the No. 2 clamping platform 52. The No. 5 clamping block 5233 is connected to the No. 5 cylinder 5234, and the No. 5 cylinder 5234 is connected to the No. 3 flipping cylinder 5235 installed on the No. 2 clamping platform 52; the No. 3 flipping cylinder 5235 drives the No. 5 cylinder 5234 to rotate above the steering gear mounting sleeve, and then the No. 5 cylinder 5234 drives the No. 5 clamping block 5233 to clamp the steering gear mounting sleeve, so that the steering gear mounting sleeve is close to the rear lower sheet of the sub-frame for easy welding, and the No. 2 clamping platform 52 is provided with a No. 3 support seat 5236 corresponding to the No. 5 clamping block 5233, and a No. 9 support column 5237 supporting the rear lower sheet of the sub-frame is provided between the No. 7 positioning pins 5231.

[0041] The No. 8 positioning clamping mechanism 525 includes a No. 8 positioning pin 5251 symmetrically arranged along the length direction of the No. 2 clamping platform 52 to cooperate with the left and right positioning holes of the corresponding front connecting plate of the sub-frame, the No. 2 clamping platform 52 is provided with a No. 4 flip cylinder 5252 connected to the corresponding No. 8 positioning pin 5251, a No. 1 transfer rod 5253 is provided between the No. 4 flip cylinder 5252 and the No. 8 positioning pin 5251, the No. 1 transfer rod 5253 is provided with a No. 6 clamping block 5254 for clamping the corresponding front connecting plate of the sub-frame, the No. 7 clamping block 5255 is abutted against the upper surface of the rear lower sheet of the sub-frame on the side of the No. 1 transfer rod 5253 away from the No. 6 clamping block 5254, and the No. 7 clamping block 5255 is equipped with There is a No. 5 support column 5256 which is in contact with the lower surface of the rear lower plate of the sub-frame to support the rear lower plate of the sub-frame, and a clamping plate 5257 for clamping the front connecting plate of the sub-frame is distributed on the side of the No. 1 transfer rod 5253 close to the No. 5 support column 5256, and the clamping plate 5257 is matched with a No. 12 clamping block 13 installed on the No. 1 transfer rod 5253, and the clamping plate 5257 is hingedly installed on the No. 1 transfer rod 5253, and the No. 1 transfer rod 5253 is provided with a No. 6 cylinder 5258 connected with the clamping plate 5257, and the No. 6 cylinder 5258 pushes the clamping plate 5257 to rotate around the hinge to clamp the corresponding front connecting plate of the sub-frame, and the end of the piston rod of the No. 6 cylinder 5258 is movably connected with the clamping plate 5257.

[0042] There are two front connecting plates of the sub-frame, and both are equipped with No. 8 positioning pins 5251 symmetrically arranged along the length direction of the No. 2 clamping platform 52; there are two No. 6 clamping blocks 5254 on the No. 1 transfer rod 5253 that cooperate with the front connecting plate of the sub-frame welded on the No. 1 clamping platform 51, and the No. 6 clamping blocks 5254 are distributed between the No. 8 positioning pins 5251, and each group of No. 6 clamping blocks 5254 are distributed along the width direction of the No. 2 clamping platform 52; the No. 8 positioning pins 5251 of the front connecting plate of the sub-frame distributed on the side of the No. 2 clamping platform 52 away from the welding robot 3 are arranged in the corresponding No. 6 clamping blocks 5254; the No. 7 clamping block 5255 and the No. 5 support column 5256 cooperate to fix the four end points of the rear lower sheet of the sub-frame to prevent shaking during welding of the rear lower sheet of the sub-frame.

[0043] The No. 7 positioning clamping assembly 524 includes a No. 9 positioning pin 5241 installed on the No. 2 clamping platform 52 and matched with the lower connecting plate of the front collision bracket, and also includes a No. 1 support seat 5242 installed on the No. 2 clamping platform 52 to carry the vehicle body mounting sleeve and make the vehicle body mounting sleeve fit with the lower surface of the lower connecting plate of the front collision bracket. The No. 1 support seat 5242 cooperates with the No. 8 clamping block 5243 that fits with the upper surface of the lower connecting plate of the front collision bracket. The No. 8 clamping block 5243 is connected to the No. 5 flip cylinder 5244 installed on the No. 2 clamping platform 52. The No. 5 flip cylinder 5244 is also connected to the No. 9 clamping blocks that are vertically distributed to each other to clamp the lower connecting plate of the front collision bracket. 5245; the No. 7 transfer rod 5246 is provided on the No. 5 flip cylinder 5244, the No. 8 clamping block 5243 and the No. 9 clamping block 5245 are both installed on the No. 7 transfer rod 5246, the No. 8 clamping block 5243 clamps the matching part of the lower connecting plate of the front collision bracket and the No. 1 support seat 5242; the lower connecting plate of the front collision bracket is placed on the No. 9 positioning pin 5241, and the vehicle body mounting sleeve is placed on the No. 1 support seat 5242, and then the No. 5 flip cylinder 5244 drives the No. 7 transfer rod 5246 to rotate, so that the No. 8 clamping block 5243 and the No. 9 clamping block 5245 clamp the lower connecting plate of the front collision bracket and make the lower connecting plate of the front collision bracket close to the vehicle body mounting sleeve.

[0044] The No. 2 clamping platform 52 is also provided with a No. 10 positioning pin 16 for supporting the rear suspension left bracket, the No. 2 clamping platform 52 is also provided with a support platform 7 for supporting the rear suspension left bracket, the support platform 7 is provided with a No. 3 limit block 8 symmetrically arranged along the width direction of the No. 2 clamping platform 52 to limit the rear suspension left bracket, the support platform 7 is matched with a No. 10 clamping block 9 for clamping the rear suspension left bracket, the No. 10 clamping block 9 is connected to a No. 8 transfer rod 10, and the No. 8 transfer rod 10 is connected to a No. 6 flip rod installed on the No. 2 clamping platform 52. Cylinder 11, the No. 8 transfer rod 10 is also provided with a No. 11 clamping block 12 for cooperating the bolt with the No. 10 positioning pin 16 and tightening the bolt; the rear suspension left bracket is placed on the No. 10 positioning pin 16, and cooperates with the support platform 7 and the No. 3 limit block 8, and then the bolt is placed on the No. 10 positioning pin 16, and finally the No. 6 flip cylinder 11 drives the No. 8 transfer rod 10 to rotate, so that the No. 10 clamping block 9 clamps the No. 11 clamping block 12 of the rear suspension left bracket to tighten the bolt, to ensure the welding position of the bolt, so that the bolt is fixed on the rear suspension left bracket after welding.

[0045] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A welding station for the front subframe of an automobile, characterized in that: The invention comprises a frame (1), a turntable (2) is connected at the center of the frame (1), a welding robot (3) is arranged in the middle of the frame (1) and is symmetrically distributed along the length direction of the frame (1), a positioner (4) is installed on the frame (1) and is symmetrically arranged along the width direction of the frame (1), and a fixture assembly (5) for clamping various parts of the front subframe of the automobile is arranged on the positioner (4); The positioner (4) drives the clamp assembly (5) to rotate along the length direction of the frame (1) and cooperates with the welding robot (3) to expand the welding working range of the welding robot (3).

2. The automobile front subframe welding station according to claim 1, characterized in that: The clamp assembly (5) comprises a first clamping platform (51) and a second clamping platform (52) connected to the corresponding positioner (4); The No. 1 clamping platform (51) is provided with a No. 1 positioning clamping assembly (511) which is respectively positioned and clamped with the left and right longitudinal beam assemblies and is symmetrically arranged along the length direction of the No. 1 clamping platform (51), and a No. 2 positioning clamping assembly (512) which supports the front connecting plate of the sub-frame is distributed between the No. 1 positioning clamping assemblies (511), and the No. 1 clamping platform (51) is provided with a No. 3 positioning clamping assembly (513) which clamps the inner reinforcing plate of the rear suspension bracket and makes the inner reinforcing plate of the rear suspension bracket match the front connecting plate of the sub-frame; The No. 2 clamping platform (52) is provided with a No. 4 positioning clamping assembly (521) for positioning and clamping the left and right longitudinal beam upper plates respectively and symmetrically arranged along the length direction of the No. 2 clamping platform (52); the No. 2 clamping platform (52) is also provided with a No. 5 positioning clamping assembly (522) for fixing the longitudinal beam inner reinforcement plate inside the left and right longitudinal beam upper plates; a No. 6 positioning clamping assembly (523) for positioning and clamping the front connecting plate assembly of the sub-frame is distributed between the No. 4 positioning clamping assembly (521); and a No. 7 positioning clamping assembly (524) is distributed at the front end of the No. 2 clamping platform (52) and symmetrically arranged along the length direction of the No. 2 clamping platform (52) so as to match the lower connecting plate of the front collision bracket with the vehicle body mounting sleeve.

3. The automobile front subframe welding station according to claim 2, characterized in that: The No. 1 positioning clamping assembly (511) comprises a No. 1 positioning pin (5111) matched with the front and rear positioning holes of the left and right longitudinal beam lower plates and a No. 1 supporting column (5112) that abuts against the left and right longitudinal beam lower plates to support the left and right longitudinal beam lower plates. The No. 1 clamping platform (51) is provided with two No. 1 cylinders (5113) distributed along the width direction of the No. 1 clamping platform (51). The No. 1 cylinder (5113) is provided with a No. 1 clamping block (5114) for clamping the left and right longitudinal beam lower plates. The No. 1 clamping platform (51) A No. 1 clamping block (5116) is distributed on the top to compress the front and rear middle parts of the left and right longitudinal beam upper plates. The No. 1 clamping platform (51) is provided with a No. 1 flip cylinder (5117) that cooperates with the corresponding No. 1 clamping block (5116). The No. 1 clamping platform (51) is provided with a No. 2 positioning pin (5118) that cooperates with the middle positioning hole of the left and right longitudinal beam upper plates. The No. 1 clamping platform (51) is provided with a pad (5115) that extends into the upper and lower plates of the left and right longitudinal beams to ensure the installation position of the upper and lower plates of the left and right longitudinal beams.

4. The automobile front subframe welding station according to claim 2, characterized in that: The No. 2 positioning clamping assembly (512) comprises a No. 3 positioning pin (5121) matched with the positioning points at both ends of the front connecting plate of the sub-frame, and a No. 2 supporting column (5122) supporting the front connecting plate of the sub-frame is distributed between the No. 3 positioning pins (5121), and a No. 2 clamping block (5123) for clamping the two ends of the front connecting plate of the sub-frame is provided on the No. 1 clamping platform (51), and the No. 2 clamping block (5123) is matched with a No. 2 cylinder (5124) installed on the No. 1 clamping platform (51).

5. The automobile front subframe welding station according to claim 4, characterized in that: The No. 3 positioning clamping assembly (513) is distributed above the No. 3 positioning pin (5121) to cooperate with the No. 4 positioning pin (5131) in the rear suspension bracket inner reinforcement plate, and the No. 4 positioning pins (5131) are all matched with the No. 3 cylinder (5132) installed on the No. 1 clamping platform (51) to drive the rear suspension bracket inner reinforcement plate to move to the sub-frame front connecting plate, and the No. 3 clamping block (5133) is distributed above the No. 4 positioning pin (5131) to clamp the rear suspension bracket inner reinforcement plate, and the No. 3 clamping block (5133) is connected to the No. 4 cylinder (5134) that drives the No. 3 clamping block (5133) to flip.

6. The automobile front subframe welding station according to claim 2, characterized in that: The No. 4 positioning clamping assembly (521) includes a No. 5 positioning pin (5211) symmetrically distributed along the length direction of the No. 2 clamping platform (52) and installed on the No. 2 clamping platform (52) to cooperate with the front and rear positioning holes of the longitudinal beam upper sheet body. The No. 2 clamping platform (52) is provided with a No. 4 clamping block (5213) for respectively clamping the front and rear ends of the longitudinal beam upper sheet body. The No. 2 clamping platform (52) is provided with a No. 3 support column (5212) corresponding to the No. 4 clamping block (5213) to support the longitudinal beam upper sheet body. The No. 4 clamping blocks (5213) are all matched with a No. 2 turning cylinder (5214) arranged on the No. 2 clamping platform (52).

7. The automobile front subframe welding station according to claim 6, characterized in that: The No. 5 positioning clamping assembly (522) includes a No. 6 positioning pin (5221) distributed between the No. 5 positioning pins (5211) to limit the inner reinforcing plate of the longitudinal beam, and No. 1 limiting blocks (5222) are distributed on both sides of the No. 6 positioning pin (5221) to match the outer shape of the inner reinforcing plate of the longitudinal beam to ensure the installation position, and No. 4 supporting columns (5223) are distributed on both sides of the No. 6 positioning pin (5221) to press the inner reinforcing plate of the longitudinal beam so that the inner reinforcing plate of the longitudinal beam fits with the upper sheet of the longitudinal beam, and the No. 6 turning cylinder (5224) connected to the No. 6 positioning pin (5221) is provided on the No. 2 clamping platform (52).

8. The automobile front subframe welding station according to claim 2, characterized in that: The sixth positioning clamping assembly (523) comprises a seventh positioning pin (5231) symmetrically arranged along the length direction of the second clamping platform (52) to position the rear lower plate of the auxiliary frame, the second clamping platform (52) is symmetrically arranged along the width direction with a second limiting block (5232) abutting against the side edge of the rear lower plate of the auxiliary frame to limit the rear lower plate of the auxiliary frame, and the second clamping platform (52) is distributed with a plurality of symmetrically arranged along the width direction to respectively limit the front connection of the two auxiliary frames. The connecting plate is matched with the rear lower plate of the auxiliary frame by a No. 8 positioning clamping mechanism (525); the No. 2 clamping platform (52) is provided with a No. 5 clamping block (5233) symmetrically arranged along the length direction of the No. 2 clamping platform (52) so as to match the steering gear mounting sleeve; the No. 5 clamping block (5233) is connected to a No. 5 cylinder (5234); the No. 5 cylinder (5234) is connected to a No. 3 turning cylinder (5235) installed on the No. 2 clamping platform (52).

9. The automobile front subframe welding station according to claim 8, characterized in that: The No. 8 positioning clamping mechanism (525) comprises No. 8 positioning pins (5251) symmetrically arranged along the length direction of the No. 2 clamping platform (52) to cooperate with the left and right positioning holes of the corresponding front connecting plate of the sub-frame, the No. 2 clamping platform (52) is provided with a No. 4 flip cylinder (5252) connected to the corresponding No. 8 positioning pin (5251), a No. 1 transfer rod (5253) is provided between the No. 4 flip cylinder (5252) and the No. 8 positioning pin (5251), the No. 1 transfer rod (5253) is provided with a No. 6 clamping block (5254) for clamping the corresponding front connecting plate of the sub-frame, and the No. 7 clamping block (5255) is provided on the side of the No. 1 transfer rod (5253) away from the No. 6 clamping block (5254) for abutting against the upper surface of the rear lower plate of the sub-frame. The seven clamping blocks (5255) are each matched with a five-support column (5256) that abuts against the lower surface of the rear lower plate of the sub-frame to support the rear lower plate of the sub-frame. A clamping plate (5257) for clamping the front connecting plate of the sub-frame is distributed on one side of the No. 1 transfer rod (5253) close to the five-support column (5256). The clamping plate (5257) is matched with a twelve-clamping block (13) installed on the No. 1 transfer rod (5253). The clamping plate (5257) is hingedly installed on the No. 1 transfer rod (5253). The No. 1 transfer rod (5253) is provided with a six-cylinder (5258) connected to the clamping plate (5257). The six-cylinder (5258) pushes the clamping plate (5257) to rotate around the hinge to clamp the corresponding front connecting plate of the sub-frame.

10. The automobile front subframe welding station according to claim 7, characterized in that: The No. 7 positioning clamping assembly (524) includes a No. 9 positioning pin (5241) installed on the No. 2 clamping platform (52) and matched with the lower connecting plate of the front collision bracket, and also includes a No. 1 support seat (5242) installed on the No. 2 clamping platform (52) to carry the vehicle body mounting sleeve and make the vehicle body mounting sleeve fit with the lower surface of the lower connecting plate of the front collision bracket, the No. 1 support seat (5242) cooperates with the No. 8 clamping block (5243) that fits with the upper surface of the lower connecting plate of the front collision bracket, the No. 8 clamping block (5243) is connected to the No. 5 turning cylinder (5244) installed on the No. 2 clamping platform (52), and the No. 5 turning cylinder (5244) is also connected to the No. 9 clamping block (5245) that is distributed perpendicular to each other to press the lower connecting plate of the front collision bracket.

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