Automobile exhaust pipe flange welding equipment

Abstract

The invention discloses automobile exhaust pipe flange welding equipment and belongs to the technical field of exhaust pipe flange welding. The automobile exhaust pipe flange welding equipment comprises a rack and further comprises a flange feeding mechanism, a flange positioning mechanism, an exhaust pipe feeding mechanism and a welding mechanism; a flange positioning mechanism for positioning the posture of a flange is installed on the rear side of the machine frame, an exhaust pipe feeding mechanism for conducting double-station feeding on an exhaust pipe is installed on the front side of the machine frame, a welding mechanism for welding the exhaust pipe and the flange is installed on the middle side of the machine frame, and the flange positioning mechanism comprises a centering mechanism and a rotation adjusting mechanism. And a centering mechanism for positioning the circle center of the flange is mounted on the rear side of the rack. By means of the mode, the circle center and the hole position of a flange can be rapidly positioned to the preset standard position, an exhaust pipe can be rapidly fixed to the preset standard position, and meanwhile alternate feeding and auxiliary discharging are conducted on the exhaust pipe.

Description

Technical Field

[0001] This invention relates to the field of exhaust pipe flange welding technology, specifically to an automotive exhaust pipe flange welding device. Background Technology

[0002] Automotive exhaust pipes are typically connected to vehicles via flanges. Flanges are usually welded to exhaust pipes using a butt welding method. The core purpose of butt welding is to ensure that the flange is perpendicular to the exhaust pipe axis and that the bolt holes are precisely positioned, providing a good fit for subsequent flange connections. The flange center is aligned with the exhaust pipe center, and the coaxiality error is within a preset range to prevent bolt hole misalignment during assembly. The flange end face is parallel to the exhaust pipe opening, and the fitting gap is within a preset range to avoid the flange surface tilting after welding.

[0003] Chinese patent CN120696685A discloses a welding device for automotive exhaust pipe flanges, comprising a workbench body. The workbench body contains a dust collection assembly for collecting smoke and dust, and a residue collection mechanism for collecting residue. The workbench body also contains an alignment assembly for positioning pipes and flanges. The dust collection assembly includes a universal tube bolted to the surface of the workbench body. A dust collection hood is installed at the end of the universal tube away from the workbench body. An exhaust fan is mounted on the surface of the workbench body, and the universal tube is connected to the air inlet of the exhaust fan. A dust guide pipe is fixedly connected to the air outlet of the exhaust fan. A water tank is located inside the workbench body, and the end of the dust guide pipe away from the exhaust fan is inserted into the water tank. The water tank is filled with water, and several positioning hooks are evenly fixedly connected inside the water tank. A residue collection cloth is installed inside the water tank, and the positioning hooks penetrate the residue collection cloth.

[0004] However, the technical solution of this patent has the following problems: This patent cannot quickly position the center and hole of the flange to the preset standard position, nor can it quickly fix the exhaust pipe to the preset standard position.

[0005] Based on this, the present invention designs an automotive exhaust pipe flange welding device to solve the above problems. Summary of the Invention

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a welding equipment for automotive exhaust pipe flanges.

[0007] To achieve the above objectives, the present invention provides the following technical solution: An automotive exhaust pipe flange welding device includes a frame, and further includes: a flange feeding mechanism, a flange positioning mechanism, an exhaust pipe feeding mechanism, and a welding mechanism. The flange feeding mechanism for feeding flanges one by one is installed on the rear side of the frame, the flange positioning mechanism for positioning the flange posture is installed on the rear side of the frame, the exhaust pipe feeding mechanism for dual-station feeding of exhaust pipes is installed on the front side of the frame, and the welding mechanism for welding exhaust pipes and flanges is installed in the middle side of the frame. The flange positioning mechanism includes a centering mechanism and a rotation adjustment mechanism. The centering mechanism for positioning the center of the flange is installed on the rear side of the frame, and the rotation adjustment mechanism for rotating and adjusting the attitude of the flange is installed on the centering mechanism.

[0008] Furthermore, the centering mechanism includes: an elastic moving component and a downward centering component, wherein the elastic moving component is mounted on the rear side of the frame, and the downward centering component is mounted on the elastic moving component.

[0009] Furthermore, the elastic moving component includes: a first sliding frame, a guide rod, a second sliding frame, a first spring, and a first cylinder. The first sliding frame is slidably connected to the frame, and the plurality of guide rods are slidably connected to the lower side of the first sliding frame. The second sliding frame is fixedly installed on the end of the guide rod away from the first sliding frame. The first spring is sleeved on the guide rod, with one end of the first spring in close contact with the first sliding frame and the other end of the first spring in close contact with the second sliding frame. The first cylinder is fixedly installed on the frame, and the output end of the first cylinder is fixedly connected to the upper side of the first sliding frame.

[0010] Furthermore, the downward centering assembly includes: a vertical tube, a first transmission rod, a second transmission rod, an abutment rod, and an anti-slip plate. The vertical tube is rotatably connected to the side of the second sliding frame. The three first transmission rods are arranged in a circumferential array with the center of the vertical tube as the center, on the side of the vertical tube close to the first sliding frame. One end of the first transmission rod is hinged to the vertical tube. The three second transmission rods are arranged in a circumferential array with the center of the vertical tube as the center, on the side of the vertical tube away from the first sliding frame. One end of the second transmission rod is hinged to the vertical tube. The three abutment rods are arranged in a circumferential array with the center of the vertical tube as the center, on the outer side wall of the vertical tube. One end of the abutment rod is hinged to the end of the first transmission rod away from the vertical tube, and the end of the abutment rod away from the first transmission rod is hinged to the end of the second transmission rod away from the vertical tube. The anti-slip plate is fixedly installed on the end of the abutment rod close to the second transmission rod.

[0011] Furthermore, the downward centering assembly also includes an auxiliary support assembly, which includes a cylindrical base and a universal ball joint. The cylindrical base is fixedly installed at the end of the abutment rod near the second transmission rod, and the universal ball joint housing is fixedly installed at the end of the cylindrical base away from the abutment rod.

[0012] Furthermore, the rotation adjustment mechanism includes a rotation component, a flipping component, and a position detection component. The rotation component is mounted on the second sliding frame, the flipping component is mounted on the frame, and the position detection component is mounted on the flipping component.

[0013] Furthermore, the flipping assembly includes: a flipping frame, a second cylinder, and a clamping lever cylinder. One end of the flipping frame is rotatably connected to the frame via a rotating shaft. A rectangular slot is provided on the flipping frame. One end of the second cylinder is rotatably connected to the frame via a rotating shaft. The end of the second cylinder away from the frame is rotatably connected to the end of the flipping frame away from the frame via a rotating shaft. Multiple clamping lever cylinders are fixedly installed on the flipping frame. Multiple circular openings are provided on the flipping frame.

[0014] Furthermore, the position detection component includes a vertical movement component and a hole position detection component, wherein the vertical movement component is mounted on the flip frame and the hole position detection component is mounted on the flip frame.

[0015] Furthermore, the vertical movement component includes a third sliding frame and a third cylinder. The third sliding frame is slidably connected to the lower side of the flip frame, and the third cylinder is fixedly installed on the flip frame. The output end of the third cylinder is fixedly connected to the third sliding frame. The hole position detection component includes a sliding rod, a second spring, and a pressure sensor. A plurality of sliding rods are arranged in a circular array around the center of the third sliding frame. The sliding rods are slidably connected to the third sliding frame. The second spring is sleeved on the sliding rod, with one end of the second spring tightly attached to the sliding rod and the other end of the second spring tightly attached to the third sliding frame. A plurality of pressure sensors are fixedly installed on the third sliding frame, with each pressure sensor corresponding to one of the sliding rods. The upper side of the sliding rod is hemispherical.

[0016] Furthermore, the exhaust pipe feeding mechanism includes an alternating feeding assembly and a clamping assembly, wherein the alternating feeding assembly is mounted on the frame and the clamping assembly is mounted on the alternating feeding assembly.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. The present invention uses an elastic moving component to drive the downward centering component to move towards the flange direction, and provides a continuous downward pressure to the downward centering component. The vertical tube of the downward centering component moves downward, which drives the first transmission rod, the second transmission rod, the abutment rod, and the anti-slip plate to move downward. The universal ball of the auxiliary support component on the lower side of the abutment rod contacts the preset position of the rotation adjustment mechanism. The vertical tube continues to move downward, causing the first transmission rod and the second transmission rod to rotate, driving the abutment rod and the anti-slip plate to move synchronously towards the inner ring sidewall of the flange. The ball is used to reduce the friction of the abutment rod movement. The anti-slip plate moves synchronously towards the inner ring side wall of the flange and sticks tightly to the inner ring side wall of the flange. At this time, the flange center is in the preset standard position, which is conducive to quickly adjusting the flange center to the preset standard position. The servo motor drives the downward centering component to rotate, so that the flange with the center in the standard position rotates. The position detection component detects the hole position on the flange. If the flange is in the preset standard position, the exhaust pipe feeding mechanism feeds the exhaust pipe to the standard position. The welding mechanism welds the exhaust pipe and the flange, which is conducive to quickly positioning the flange center and hole position to the preset standard position. 2. The second rotary pressing cylinder rotates and presses down, causing the guide wheel to press tightly against the exhaust pipe, pressing the exhaust pipe against the limiting bracket. The output end of the sixth cylinder extends, causing the C-shaped brackets to move closer to each other. The two C-shaped brackets move closer to each other, causing the exhaust pipe to move back and forth, quickly fixing the front and back positions of the exhaust pipe. The first rotary pressing cylinder is activated to clamp the exhaust pipe and fix its left and right positions. The alternating feeding component alternately feeds and assists in unloading the exhaust pipe, which helps to quickly fix the exhaust pipe to the preset standard position. At the same time, the exhaust pipe is alternately fed and assisted in unloading. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a front view of the present invention; Figure 3 This is a top view of the present invention; Figure 4 This is a partial structural schematic diagram of the welding mechanism of the present invention; Figure 5 This is a partial structural schematic diagram of the alternating feeding assembly and clamping assembly of the present invention; Figure 6 for Figure 5 Enlarged view of A in the middle; Figure 7 This is a partial structural schematic diagram of the flange feeding mechanism and the flipping assembly of the present invention; Figure 8 This is a schematic diagram of the structure of the flipping component of the present invention after it has been flipped 90 degrees; Figure 9 This is a partial structural schematic diagram of the elastic moving component, the downward centering component, and the rotating component of the present invention; Figure 10 for Figure 9 Enlarged view of B in the middle; Figure 11 This is a partial structural schematic diagram of the flipping component and the vertical moving component of the present invention; Figure 12 This is a partial structural schematic diagram of the hole position detection component of the present invention.

[0020] The labels in the diagram represent: 1. Frame; 2. Flange feeding mechanism; 21. Conveying pipe; 22. Fourth cylinder; 23. Push plate; 3. Flange positioning mechanism; 31. First sliding frame; 32. Guide rod; 33. Second sliding frame; 34. First spring; 35. First cylinder; 36. Vertical pipe; 37. First transmission rod; 38. Second transmission rod; 39. Abutment rod; 310. Anti-slip plate; 311. Cylindrical base; 312. Universal ball; 313. Servo motor; 314. Flipping frame; 315. Second cylinder; 316. Clamping lever cylinder; 317. Rectangular slot; 318. Circular opening; 319. Third sliding frame; 320. 3. Third cylinder; 321. Sliding rod; 322. Second spring; 323. Pressure sensor; 324. Magnet; 4. Exhaust pipe feeding mechanism; 41. First sliding plate; 42. First linear module; 43. Second sliding plate; 44. Second linear module; 45. Support plate; 46. Tension spring; 47. Fifth cylinder; 48. Limiting bracket; 49. First rotating pressing cylinder; 410. Second rotating pressing cylinder; 411. Guide wheel; 412. Sixth cylinder; 413. C-shaped bracket; 5. Welding mechanism; 51. Circular guide rail module; 52. Third linear module; 53. Fourth linear module; 54. Welding gun head. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0022] The present invention will be further described below with reference to embodiments.

[0023] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0024] Example 1: In some examples, please refer to Figures 1-12 A welding device for automotive exhaust pipe flanges includes a frame 1, and further includes a flange feeding mechanism 2, a flange positioning mechanism 3, an exhaust pipe feeding mechanism 4, and a welding mechanism 5. The flange feeding mechanism 2, which feeds flanges one by one, is installed on the rear side of the frame 1. The flange positioning mechanism 3, which positions the flanges, is installed on the rear side of the frame 1. The exhaust pipe feeding mechanism 4, which feeds exhaust pipes in two positions, is installed on the front side of the frame 1. The welding mechanism 5, which welds exhaust pipes and flanges, is installed in the middle of the frame 1.

[0025] like Figure 1 , Figure 2 , Figure 3 As shown, the flange positioning mechanism 3 includes a centering mechanism and a rotation adjustment mechanism. The centering mechanism for positioning the center of the flange is installed on the rear side of the frame 1, and the rotation adjustment mechanism for rotating and adjusting the attitude of the flange is installed on the centering mechanism.

[0026] The centering mechanism includes an elastic moving component and a downward centering component. The elastic moving component is installed on the rear side of the frame 1, and the downward centering component is installed on the elastic moving component.

[0027] like Figure 9 As shown, the elastic moving assembly includes: a first sliding frame 31, a guide rod 32, a second sliding frame 33, a first spring 34, and a first cylinder 35. The first sliding frame 31 is slidably connected to the frame 1. A plurality of guide rods 32 are slidably connected to the lower side of the first sliding frame 31. The second sliding frame 33 is fixedly installed on the end of the guide rod 32 away from the first sliding frame 31. The first spring 34 is sleeved on the guide rod 32. One end of the first spring 34 is in close contact with the first sliding frame 31, and the other end of the first spring 34 is in close contact with the second sliding frame 33. The first cylinder 35 is fixedly installed on the frame 1, and the output end of the first cylinder 35 is fixedly connected to the upper side of the first sliding frame 31.

[0028] The flange feeding mechanism 2 feeds flanges one by one to the area directly below the elastic moving component of the centering mechanism. The output end of the first cylinder 35 extends, causing the first sliding frame 31 to move downward. The downward movement of the first sliding frame 31 causes the guide rod 32 and the second sliding frame 33 to move downward. The downward movement of the second sliding frame 33 causes the downward pressing centering component to move downward. The downward pressing centering component moves downward to the preset position of the rotary adjustment mechanism. The first sliding frame 31 continues to move downward, causing the first spring 34 to undergo elastic deformation and be compressed, providing a continuous downward pressure for the downward pressing centering component, which is beneficial for the downward pressing centering component to position the center of the flange.

[0029] like Figure 9 , Figure 10 As shown, the downward centering assembly includes: a vertical tube 36, a first transmission rod 37, a second transmission rod 38, an abutment rod 39, and an anti-slip plate 310. The vertical tube 36 is rotatably connected to the middle side of the second sliding frame 33. The three first transmission rods 37 are arranged in a circular array with the center of the vertical tube 36 as the center, on the side of the vertical tube 36 near the first sliding frame 31. One end of each first transmission rod 37 is hinged to the vertical tube 36. The three second transmission rods 38 are arranged in a circular array with the center of the vertical tube 36 as the center, on the side of the vertical tube 36 away from the first sliding frame 31. One end of each second transmission rod 39 is hinged to the vertical tube 36. On the tube 36, three abutment rods 39 are arranged in a circular array around the center of the vertical tube 36 on the outer side wall of the vertical tube 36. One end of the abutment rod 39 is hinged to the end of the first transmission rod 37 away from the vertical tube 36, and the other end of the abutment rod 39 away from the first transmission rod 37 is hinged to the end of the second transmission rod 38 away from the vertical tube 36. The anti-slip plate 310 is fixedly installed on the end of the abutment rod 39 near the second transmission rod 38. Magnets 324 are fixedly installed on both the first transmission rod 37 and the vertical tube 36. The two magnets 324 attract each other and are used to restore the first transmission rod 37 after rotation.

[0030] like Figure 10 As shown, the downward centering assembly further includes an auxiliary support assembly, which includes a cylindrical base 311 and a universal ball 312. The cylindrical base 311 is fixedly installed at one end of the abutment rod 39 near the second transmission rod 38, and the outer shell of the universal ball 312 is fixedly installed at one end of the cylindrical base 311 away from the abutment rod 39. The cylindrical base 311 is used to support the universal ball 312.

[0031] The second sliding frame 33 moves downward, causing the vertical tube 36 of the downward centering assembly to move downward. The downward movement of the vertical tube 36 causes the first transmission rod 37, the second transmission rod 38, the abutment rod 39, and the anti-slip plate 310 to move downward. The universal ball 312 of the auxiliary support assembly on the lower side of the abutment rod 39 contacts the preset position of the rotation adjustment mechanism. The vertical tube 36 continues to move downward, causing the first transmission rod 37 and the second transmission rod 38 to rotate, causing the abutment rod 39 and the anti-slip plate 310 to move synchronously toward the inner ring sidewall of the flange. The universal ball 312 is used to reduce the friction of the abutment rod 39. The anti-slip plate 310 moves synchronously toward the inner ring sidewall of the flange and sticks tightly to the inner ring sidewall of the flange. At this time, the flange center is in the preset standard position, which is conducive to quickly adjusting the flange center to the preset standard position.

[0032] The rotation adjustment mechanism includes a rotation component, a flipping component, and a position detection component. The rotation component is mounted on the second sliding frame 33, the flipping component is mounted on the frame 1, and the position detection component is mounted on the flipping component.

[0033] like Figure 9 , Figure 10 As shown, the rotating assembly includes a servo motor 313, which is fixedly mounted on the second sliding frame 33. The output shaft of the servo motor 313 is fixedly connected to the vertical tube 36. The servo motor 313 is configured as a servo motor with self-locking when power is off.

[0034] The servo motor 313 of the rotating component of the rotating adjustment mechanism rotates, driving the vertical tube 36 to rotate. The rotation of the vertical tube 36 drives the first transmission rod 37, the second transmission rod 38, the abutment rod 39, and the anti-slip plate 310 to rotate, causing the anti-slip plate 310, which is in close contact with the inner ring side wall of the flange, to rotate and drive the flange to rotate. The position detection component detects the position of the flange rotation. When the flange rotates to the preset standard position, the flipping component flips and rotates the flange ninety degrees to the preset position.

[0035] like Figure 7 , Figure 8 As shown, the flipping assembly includes: a flipping frame 314, a second cylinder 315, and a clamping lever cylinder 316. One end of the flipping frame 314 is rotatably connected to the frame 1 via a rotating shaft. A rectangular slot 317 is provided on the flipping frame 314. One end of the second cylinder 315 is rotatably connected to the frame 1 via a rotating shaft. The end of the second cylinder 315 away from the frame 1 is rotatably connected to the end of the flipping frame 314 away from the frame 1 via a rotating shaft. Multiple clamping lever cylinders 316 are fixedly installed on the flipping frame 314. Multiple circular openings 318 are provided on the flipping frame 314.

[0036] When the flange rotates to the preset standard position, the clamping lever cylinder 316 of the flipping assembly is activated to clamp the flange, and then the output end of the second cylinder 315 shortens, causing the flipping frame 314 to rotate ninety degrees to the preset position.

[0037] The position detection component includes a vertical movement component and a hole position detection component. The vertical movement component is mounted on the flip frame 314, and the hole position detection component is mounted on the flip frame 314.

[0038] like Figure 11 As shown, the vertical moving component includes a third sliding frame 319 and a third cylinder 320. The third sliding frame 319 is slidably connected to the lower side of the flip frame 314, and the third cylinder 320 is fixedly installed on the flip frame 314. The output end of the third cylinder 320 is fixedly connected to the third sliding frame 319.

[0039] like Figure 12 As shown, the hole position detection component includes: a sliding rod 321, a second spring 322, and a pressure sensor 323. Multiple sliding rods 321 are arranged in a circular array around the center of a third sliding frame 319. The sliding rods 321 are slidably connected to the third sliding frame 319. The second spring 322 is sleeved on the sliding rod 321, with one end of the second spring 322 tightly against the sliding rod 321 and the other end tightly against the third sliding frame 319. Multiple pressure sensors 323 are fixedly installed on the third sliding frame 319. The pressure sensors 323 correspond one-to-one with the sliding rods 321, and the sliding rods 321 correspond one-to-one with the positions of the circular openings 318. The upper side of the sliding rod 321 is hemispherical.

[0040] When the flange is in the preset standard position, the hole on the flange is located at the circular opening 318. The output end of the third cylinder 320 of the vertical movement component of the position detection component moves upward, driving the third sliding frame 319 to move upward. The upward movement of the third sliding frame 319 drives the sliding rod 321 of the hole position detection component to move upward. The sliding rod 321 moves upward to the preset position. At this time, the upper hemispherical position of the sliding rod 321 is at the circular opening 318. The pressure sensor 323 does not detect pressure. The pressure sensor 323 transmits the electrical signal to the external controller. The external controller controls the exhaust pipe feeding mechanism 4 and the welding mechanism 5 to start, welding the exhaust pipe and the flange.

[0041] If the flange is not in the preset standard position, the hole on the flange does not coincide with the position of the circular opening 318. At this time, the upper hemispherical position of the sliding rod 321 is in close contact with the flange, and the sliding rod 321 is obstructed by the flange. The sliding rod 321 applies continuous pressure to the pressure sensor 323, and the pressure sensor 323 transmits an electrical signal to the external controller. The external controller controls the exhaust pipe feeding mechanism 4 and the welding mechanism 5 to not start. At this time, the second spring 322 undergoes elastic deformation and is compressed, and the flange rotates slowly and continuously. When the hole on the flange rotates to the position of the circular opening 318, the second spring 322, which has undergone elastic deformation and been compressed, returns to its original state and pushes the sliding rod 321 to the position of the circular opening 318. At this time, the pressure sensor 323 is not subjected to the pressure applied by the sliding rod 321. The pressure sensor 323 transmits an electrical signal to the external controller, and the external controller controls the exhaust pipe feeding mechanism 4 and the welding mechanism 5 to start, welding the exhaust pipe and the flange. This is beneficial for quickly determining whether the flange position is in the preset position by rotating the flange.

[0042] Example 2: In some embodiments, such as Figures 1-12 As shown, in a preferred embodiment of the present invention, the flange feeding mechanism 2 includes: a conveying pipe 21, a fourth cylinder 22, and a push plate 23. One end of the conveying pipe 21 is fixedly installed on the frame 1, and the other end of the conveying pipe 21 is connected to the output end of an external feeding device, which can be a vibratory feeder. The fourth cylinder 22 is fixedly installed on the frame 1, and the push plate 23 is fixedly installed on the output end of the fourth cylinder 22. The end of the push plate 23 away from the fourth cylinder 22 is located on the side of the conveying pipe 21 close to the frame 1.

[0043] The external feeding equipment transports the flanges to the side of the conveying pipe 21 near the frame 1. The output end of the fourth cylinder 22 extends and drives the push plate 23 to move, pushing the flanges one by one onto the flip frame 314. After the flange positioning mechanism 3 centers and positions the flanges, the exhaust pipe feeding mechanism 4 feeds the exhaust pipe. The welding mechanism 5 welds the positioned flanges and exhaust pipes together.

[0044] Example 3: In some embodiments, such as Figures 1-12 As shown, in a preferred embodiment of the present invention, the exhaust pipe feeding mechanism 4 includes: an alternating feeding assembly and a clamping assembly, wherein the alternating feeding assembly is mounted on the frame 1 and the clamping assembly is mounted on the alternating feeding assembly.

[0045] like Figure 2 , Figure 3 , Figure 5As shown, the alternating feeding assembly includes: a first sliding plate 41, a first linear module 42, a second sliding plate 43, a second linear module 44, a support plate 45, a tension spring 46, and a fifth cylinder 47. The first sliding plate 41 is slidably connected to the front right side of the frame 1. The two first linear modules 42 are fixedly installed on the front right side of the frame 1, and the output end of the first linear module 42 is fixedly connected to the first sliding plate 41. The second sliding plate 43 is slidably connected to the front left side of the frame 1. The two second linear modules 44 are fixedly installed on the front left side of the frame 1, and the output end of the second linear module 44 is fixedly connected to the second sliding plate 43. A support plate 45 is slidably connected to both the first sliding plate 41 and the second sliding plate 43. A tension spring 46 is fixedly installed on both the first sliding plate 41 and the second sliding plate 43. The end of the tension spring 46 away from the first sliding plate 41 and the second sliding plate 43 is fixedly installed on the support plate 45. The fifth cylinder 47 is fixedly installed on the front side of the frame 1.

[0046] like Figure 5 , Figure 6 As shown, the clamping assembly includes: a limiting bracket 48, a first rotary pressing cylinder 49, a second rotary pressing cylinder 410, a guide wheel 411, a sixth cylinder 412, and a C-shaped bracket 413. Multiple limiting brackets 48 are fixedly installed on both the first sliding plate 41 and the second sliding plate 43. Multiple first rotary pressing cylinders 49 are fixedly installed on both the first sliding plate 41 and the second sliding plate 43. Second rotary pressing cylinders 410 are fixedly installed on both the first sliding plate 41 and the second sliding plate 43. Multiple guide wheels 411 are rotatably connected to the output end of the second rotary pressing cylinder 410 via a rotating shaft. Two sixth cylinders 412 are fixedly installed on both the first sliding plate 41 and the second sliding plate 43. The C-shaped bracket 413 is fixedly installed on the output end of the sixth cylinder 412.

[0047] After the exhaust pipe is welded, it is clamped and moved by an external robotic arm to the limiting bracket 48 of the clamping component of the exhaust pipe feeding mechanism 4. At this time, the left and right positions of the exhaust pipe are in the preset positions. The second rotary pressing cylinder 410 rotates and presses down, driving the guide wheel 411 to press against the exhaust pipe and press the exhaust pipe against the limiting bracket 48. The output end of the sixth cylinder 412 extends, driving the C-shaped bracket 413 to move closer to each other. The two C-shaped brackets 413 move closer to each other, driving the exhaust pipe to move back and forth, quickly fixing the front and back positions of the exhaust pipe. The first rotary pressing cylinder 49 is activated to clamp the exhaust pipe and fix the left and right positions of the exhaust pipe, which is conducive to quickly fixing the exhaust pipe to the preset standard position.

[0048] After the exhaust pipe on the clamping assembly on the right support plate 45 of the alternating feeding component is fixed to the standard position, the output end of the first linear module 42 moves to the left, causing the first sliding plate 41 to move to the left. The output end of the fifth cylinder 47 extends, causing the support plate 45 to move towards the flange after rotating 90 degrees. The tension spring 46 undergoes elastic deformation and is stretched. At this time, the exhaust pipe in the standard position on the support plate 45 is close to the flange. The welding mechanism 5 welds the exhaust pipe and the flange together. The clamping lever cylinder 316 releases the flange, and the output end of the fifth cylinder 47 returns to its original position, undergoing elastic deformation. The spring 46 returns to its original position, pulling the support plate 45 back to its initial position. At this time, the output end of the first linear module 42 returns to its original position, transporting the welded exhaust pipe and flange to the exhaust pipe disposal position. The welded exhaust pipe is then transported away by an external robotic arm. Simultaneously, the output end of the second linear module 44 moves to the right, causing the first sliding plate 41 to move to the right. The output end of the fifth cylinder 47 extends, causing the support plate 45 to move towards the flange after rotating 90 degrees. While the welded exhaust pipe is being unloaded, the unwelded exhaust pipe is being loaded, achieving alternating loading and auxiliary unloading of exhaust pipes.

[0049] like Figure 4 As shown, the welding mechanism 5 includes: an annular guide rail module 51, a third linear module 52, a fourth linear module 53, and a welding gun head 54. The annular guide rail module 51 is fixedly installed on the middle side of the frame 1. The third linear module 52 is fixedly installed on the output end of the annular guide rail module 51. The fourth linear module 53 is fixedly installed on the output end of the third linear module 52. The welding gun head 54 is fixedly installed on the output end of the fourth linear module 53.

[0050] The exhaust pipe at the standard position on the support plate 45 is close to the flange. The output end of the third linear module 52 of the welding mechanism 5 moves, driving the fourth linear module 53 to move. The output end of the fourth linear module 53 moves the welding gun head 54 to the preset position. The output end of the annular guide rail module 51 moves, driving the third linear module 52, the fourth linear module 53 and the welding gun head 54 to rotate. The welding gun head 54 welds the exhaust pipe and the flange.

[0051] The first cylinder 35, the second cylinder 315, the third cylinder 320, the fourth cylinder 22, the sixth cylinder 412, the servo motor 313, the clamping lever cylinder 316, the pressure sensor 323, the first linear module 42, the second linear module 44, the third linear module 52, the first rotary pressing cylinder 49, the second rotary pressing cylinder 410, and the welding gun head 54 are all electrically connected to an external controller.

[0052] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automobile exhaust pipe flange welding apparatus comprising a frame (1), characterized in that, Also include: The flange loading mechanism (2), flange positioning mechanism (3), exhaust pipe loading mechanism (4) and welding mechanism (5), the rear side of the rack (1) is installed with the flange loading mechanism (2) for loading flange one by one, the rear side of the rack (1) is installed with the flange positioning mechanism (3) for positioning the flange posture, the front side of the rack (1) is installed with the exhaust pipe loading mechanism (4) for double station loading of exhaust pipe, the middle side of the rack (1) is installed with the welding mechanism (5) for welding of exhaust pipe and flange; The flange positioning mechanism (3) comprises: centering mechanism and rotary adjusting mechanism, the rear side of the rack (1) is installed with the centering mechanism for positioning the center of the flange, and the rotary adjusting mechanism is installed on the centering mechanism for rotating the flange.

2. The automobile exhaust pipe flange welding apparatus according to claim 1, characterized by, The centering mechanism comprises: elastic moving assembly and down pressure centering assembly, the elastic moving assembly is installed on the rear side of the rack (1), and the down pressure centering assembly is installed on the elastic moving assembly.

3. The automobile exhaust pipe flange welding apparatus according to claim 2, characterized by, The elastic moving assembly comprises: first sliding frame (31), guide rod (32), second sliding frame (33), first spring (34) and first air cylinder (35), the first sliding frame (31) is slidably connected on the rack (1), a plurality of guide rods (32) are slidably connected on the lower side of the first sliding frame (31), the second sliding frame (33) is fixedly installed on the end of the guide rod (32) away from the first sliding frame (31), the first spring (34) is sleeved on the guide rod (32), one end of the first spring (34) is close to the first sliding frame (31), the other end of the first spring (34) is close to the second sliding frame (33), the first air cylinder (35) is fixedly installed on the rack (1), and the output end of the first air cylinder (35) is fixedly connected to the upper side of the first sliding frame (31).

4. The automobile exhaust pipe flange welding apparatus according to claim 3, characterized by The down pressure centering assembly comprises: vertical pipe (36), first transmission rod (37), second transmission rod (38), abutting rod (39) and anti-skid sheet (310), the vertical pipe (36) is rotatably connected to the middle side of the second sliding frame (33), three first transmission rods (37) are distributed in a circumferential array around the center of the vertical pipe (36) on the side of the vertical pipe (36) close to the first sliding frame (31), one end of the first transmission rod (37) is hinged to the vertical pipe (36), three second transmission rods (38) are distributed in a circumferential array around the center of the vertical pipe (36) on the side of the vertical pipe (36) away from the first sliding frame (31), one end of the second transmission rod (38) is hinged to the vertical pipe (36), three abutting rods (39) are distributed in a circumferential array around the center of the vertical pipe (36) on the outer ring side wall of the vertical pipe (36), one end of the abutting rod (39) is hinged to the end of the first transmission rod (37) away from the vertical pipe (36), the end of the abutting rod (39) away from the first transmission rod (37) is hinged to the end of the second transmission rod (38) away from the vertical pipe (36), and the anti-skid sheet (310) is fixedly installed on the end of the abutting rod (39) close to the second transmission rod (38).

5. The automobile exhaust pipe flange welding apparatus according to claim 4, characterized by The lower pressing and centering assembly further comprises an auxiliary supporting assembly, which comprises a cylindrical base (311) and a universal ball (312), the cylindrical base (311) is fixedly installed at one end of the abutting rod (39) close to the second transmission rod (38), and the universal ball (312) is fixedly installed at one end of the cylindrical base (311) away from the abutting rod (39).

6. The automobile exhaust pipe flange welding apparatus according to claim 5, characterized by The rotation adjusting mechanism comprises a rotating assembly, a turnover assembly and a position detecting assembly, the rotating assembly is installed on the second sliding frame (33), the turnover assembly is installed on the rack (1), and the position detecting assembly is installed on the turnover assembly.

7. The automobile exhaust pipe flange welding apparatus according to claim 6, characterized by The turnover assembly comprises a turnover frame (314), a second air cylinder (315) and clamping lever air cylinders (316), one end of the turnover frame (314) is rotationally connected to the rack (1) through a rotating shaft, a rectangular slot (317) is formed in the turnover frame (314), one end of the second air cylinder (315) is rotationally connected to the rack (1) through a rotating shaft, one end of the second air cylinder (315) away from the rack (1) is rotationally connected to one end of the turnover frame (314) away from the rack (1), and a plurality of clamping lever air cylinders (316) are fixedly installed on the turnover frame (314), and a plurality of circular holes (318) are formed in the turnover frame (314).

8. The automobile exhaust pipe flange welding apparatus according to claim 7, characterized by The position detecting assembly comprises a vertical moving assembly and a hole position detecting assembly, the vertical moving assembly is installed on the turnover frame (314), and the hole position detecting assembly is installed on the turnover frame (314).

9. The automobile exhaust pipe flange welding apparatus according to claim 8, characterized by The vertical moving assembly comprises a third sliding frame (319) and a third air cylinder (320), the third sliding frame (319) is slidingly connected to the lower side of the turnover frame (314), the third air cylinder (320) is fixedly installed on the turnover frame (314), and the output end of the third air cylinder (320) is fixedly connected to the third sliding frame (319), the hole position detecting assembly comprises a sliding rod (321), a second spring (322) and a pressure sensor (323), a plurality of sliding rods (321) are arranged in a circular array around the center of the third sliding frame (319), the sliding rod (321) is slidingly connected to the third sliding frame (319), the second spring (322) is sleeved on the sliding rod (321), one end of the second spring (322) is in close contact with the sliding rod (321), the other end of the second spring (322) is in close contact with the third sliding frame (319), a plurality of pressure sensors (323) are fixedly installed on the third sliding frame (319), the pressure sensor (323) and the sliding rod (321) are in one-to-one correspondence, and the upper side of the sliding rod (321) is hemispherical.

10. The automotive exhaust pipe flange welding apparatus according to claim 9, characterized by, The exhaust pipe feeding mechanism (4) comprises an alternate feeding assembly and a clamping assembly, the alternate feeding assembly is installed on the rack (1), and the clamping assembly is installed on the alternate feeding assembly.

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