Reaming device of automobile airflow pipe

Abstract

The invention relates to the field of airflow pipe chambering, and discloses an automobile airflow pipe chambering device which comprises a workbench and a support, a shaping structure is arranged on the left side of the upper surface of the workbench, a movable chambering structure is arranged on the right side of the upper surface of the workbench, and a movable clamping structure is arranged in the middle of the workbench. The transmission structure drives the movable reaming structure and the movable clamping structure to synchronously move in the opposite directions, when the movable reaming structure and the movable clamping structure move in the direction close to each other, the airflow pipe can be reamed, the heating structure is matched to heat the reaming position of the airflow pipe, the reaming speed is increased, and after reaming, the reaming efficiency is improved. The reaming position of the airflow pipe can be shaped through the shaping structure, the problem that the airflow pipe shrinks due to gradual cooling after being heated and reamed is solved, in the shaping process, the movable reaming structure and the movable clamping structure are reset, reaming work can be continuously conducted on the next airflow pipe, the working time is fully utilized, and the working efficiency is improved. And the working efficiency is improved.

Description

Technical Field

[0001] This invention relates to the technical field of airflow pipe enlargement, and in particular to an enlargement device for an automotive airflow pipe. Background Technology

[0002] Automotive airflow ducts typically refer to two types of piping systems: air guide pipes and intake pipes, each performing different functions. During the production of automotive airflow ducts, a hole-expanding device is required to expand the holes. In the existing technology, the expansion device for the airflow pipe achieves stable support for the hydraulic cylinder and guides the clamping plate through the setting of the fixed frame, guide rod, and guide plate, thus preventing the clamping plate from shifting during movement. The setting of the heating plate facilitates the heating of the PPR pipe placed between the clamping plate and the support base, thereby improving the expansion effect. The setting of the maintenance plate facilitates personnel to perform maintenance work on the inside of the work box. The setting of the guide groove achieves the purpose of guiding both sides of the moving plate. The setting of the sliding groove and the slider achieves the purpose of guiding the rotating rod and the rotating sleeve, so that the rotating rod can move along the inner cavity of the rotating sleeve while ensuring that the rotating rod and the rotating sleeve can rotate synchronously. The setting of the column and the base plate achieves the purpose of stable support for the whole. In existing hole-expanding devices, a heating plate is used to heat the hole-expanding area of ​​the airflow pipe during the hole-expanding process to improve the hole-expanding effect. However, during the heating hole-expanding process, as the heated part of the airflow pipe gradually cools down, shrinkage is likely to occur at the hole-expanding location, which affects the hole-expanding quality. Therefore, there are areas for improvement. Summary of the Invention

[0003] To address the problems mentioned in the background art, the present invention provides a device for expanding the opening of an automotive airflow pipe.

[0004] The present invention provides a device for expanding the opening of an automotive airflow duct, which adopts the following technical solution: A device for expanding the airflow duct of an automobile includes a worktable and a bracket. A shaping structure is provided on the upper left side of the worktable, a movable expanding structure is provided on the upper right side of the worktable, a movable clamping structure is provided in the middle of the worktable, a transmission structure is provided on the lower right side of the worktable, brackets are supported on both sides of the lower part of the worktable, a heating structure is provided in the middle of the worktable, and a collecting structure is provided between the two brackets. The shaping structure includes a U-shaped frame fastened to the left side of the workbench by bolts, a horizontal plate fastened to the middle of one side of the U-shaped frame by screws, a flip-and-close structure provided on the horizontal plate, a first mounting plate connected to the workbench near the U-shaped frame, a first cylinder mounted on the first mounting plate, a first moving block connected to one end of the output shaft of the first cylinder, a fixed rod connected to the upper side of one side of the first moving block, and a shaping block mounted on one end of the fixed rod; The movable hole-expanding structure includes a first guide groove on the right side of the worktable, a first movable plate slidably disposed in the first guide groove, a movable stage disposed on the worktable at the first guide groove, the movable stage being mounted on the top of the first movable plate, two second mounting plates being mounted on the first movable plate, a hydraulic cylinder being mounted on one of the second mounting plates, and a hole-expanding block being disposed on one end of the hydraulic cylinder output shaft passing through the other second mounting plate. The movable clamping structure includes a second guide groove on the worktable near the first guide groove, a second movable plate slidably disposed in the second guide groove, an intermediate platform disposed at the top of the second movable plate via a rotation switching structure, a second cylinder installed at the middle of the front and rear sides of the intermediate platform, a third guide groove on the front and rear sides of the intermediate platform, a second movable block slidably disposed in the third guide groove, a clamping seat disposed on the second movable block, a plurality of slots disposed on the side of the two clamping seats close to each other, a strip movably inserted into each slot, a clamping block disposed on one end of the strip protruding from the clamping seat, and a spring connecting the other end of the strip to the inner wall of the slot.

[0005] Preferably, the transmission structure includes two third mounting plates connected below the worktable. The two third mounting plates are respectively positioned close to the first guide groove and the second guide groove. A motor is mounted on one of the third mounting plates. One end of the motor output shaft is connected to a bidirectional screw. One end of the bidirectional screw is rotatably connected to the other third mounting plate. The bidirectional screw passes through threaded grooves formed on the first moving plate and the second moving plate.

[0006] Preferably, the rotation switching structure includes a rotating column rotatably connected to the top of the second moving plate, a third gear fixedly sleeved at the bottom of the rotating column, the top of the rotating column fixedly connected to the intermediate platform, and a first driving structure provided between the rotating column and the worktable.

[0007] Preferably, the first driving structure includes a fixed block disposed at the top of the second movable plate near the third gear, the fixed block having a driving frame moving through it, the driving frame having teeth on one side that mesh with the third gear, the driving frame having protrusions at both ends, each protrusion having a fixed insert rod passing through it, and the worktable having a second driving groove at the bottom of each insert rod being movably inserted into the second driving groove.

[0008] Preferably, the heating structure includes a fourth guide groove located at the front and rear edges of the middle of the worktable, a third moving block slidably disposed in the fourth guide groove, an L-shaped plate connected to each of the third moving blocks, an arc plate disposed at one end of the L-shaped plate, a heating plate fixedly embedded in the inner wall of the arc plate, and a second driving structure disposed between the third moving block and the moving table.

[0009] Preferably, the second driving structure includes a first driving plate connected to one side of the third moving block, a first driving groove is formed on the first driving plate, an L-shaped rod is movably inserted into the first driving groove, and one end of the L-shaped rod is connected to the moving platform.

[0010] Preferably, the flipping and clamping structure includes a central groove on the horizontal plate, and first inner grooves on the lower part of the inner walls on both the front and rear sides of the central groove. A base plate is slidably disposed in the first inner groove, and an adjusting plate is connected to the bottom of the base plate. Two vertical handles are disposed on the adjusting plate through an adjusting structure. A through groove is provided on the adjusting plate for the vertical handles to pass through. The bottom end of the vertical handle rotates through a flipping shaft. A first gear is fixedly sleeved in the middle of the flipping shaft. Flipping handles are fixedly sleeved on both ends of the flipping shaft. A clamping plate is installed at one end of each flipping handle. A first sliding groove is provided on the front of the horizontal plate, and a first slider is slidably disposed in the first sliding groove. A third moving plate is connected to the first slider. A second sliding groove is provided on the third moving plate, and a second slider is slidably disposed in the second sliding groove. A through rod is connected to the top of the second slider. A square plate is connected to the front of the horizontal plate above the first sliding groove. A guide groove is provided on the square plate, and the through rod moves through the guide groove. An L-shaped strip is connected to the bottom of the second slider. Teeth that mesh with the first gear are provided on the bottom of the L-shaped strip. A third driving structure is provided between the base plate and the first moving block.

[0011] Preferably, the third driving structure includes a second inner groove located above the inner walls on both sides of the intermediate groove. A top plate is slidably disposed in the second inner groove. A first driving strip is disposed below the top plate, and a second driving strip is disposed above the bottom plate. A rotating rod is rotatably connected at the middle of the inner walls on both sides of the intermediate groove. A second gear is fixedly sleeved at the middle of the rotating rod. The first and second driving strips are provided with teeth that mesh with the second gear. A connecting rod is connected at the left end below the top plate, and the bottom end of the connecting rod is connected to a first moving block.

[0012] Preferably, the collecting structure includes an inner plate connected between two supports, an electric telescopic rod installed on the upper left side of the inner plate, a placement plate connected to the top of the output shaft of the electric telescopic rod, a collecting frame movably inserted into a placement groove on the placement plate, a feeding groove opened on the worktable above the collecting frame, and sleeves connected to the four corners below the placement plate, with vertical rods movably inserted into the sleeves, and the bottom end of the vertical rods connected to the inner plate.

[0013] Preferably, the adjustment structure includes a threaded rod that rotates through the adjustment plate, with rotating blocks fixedly sleeved at both ends of the threaded rod, a movable sleeve sleeved on the threaded rod, the inner wall of the movable sleeve being threaded, the top ends of two vertical handles fixedly sleeved at both ends of the movable sleeve, and through holes provided on the vertical handles for the threaded rod to move through.

[0014] In summary, the present invention has the following beneficial technical effects: 1. This invention, by setting up a shaping structure, a movable expanding structure, a heating structure, a movable clamping structure, and a transmission structure, uses the transmission structure to drive the movable expanding structure and the movable clamping structure to move synchronously in opposite directions. When they move towards each other, the airflow pipe can be expanded. In addition, the heating structure heats the expanding position of the airflow pipe, increasing the expanding speed. After expanding, the shaping structure can be used to shape the expanding position of the airflow pipe, preventing the airflow pipe from shrinking due to gradual cooling after heating and expanding. Furthermore, during the shaping process, the movable expanding structure and the movable clamping structure reset, allowing the expansion of the next airflow pipe to continue, making full use of the working time and improving work efficiency. 2. By setting a second driving structure, the present invention can automatically drive the two sets of arc plates and heating plates on the heating structure to close for heating, and separate to end the heating function; 3. By setting up a rotation switching structure and a first driving structure, the present invention enables the moving clamping structure to drive the expanded airflow pipe to move toward the shaping structure. In conjunction with the first driving structure and the rotation switching structure, the moving clamping structure automatically rotates half a turn while moving, switching one end hole of the expanded airflow pipe to the positioning structure for shaping. 4. This invention, by setting up a flip-and-tighten structure, an adjustment structure, and a third driving structure, ensures that during the shaping process of the positioning block on the positioning structure, the third driving structure drives the clamping block on the flip-and-tighten structure to automatically flip downwards and then move to the end of the airflow pipe away from the screw hole for clamping, thus ensuring the smooth progress of the shaping work. Furthermore, when the flip-and-tighten structure is reset, the clamping plate on the flip-and-tighten structure can automatically rotate, thereby preventing the clamping plate from hindering the next airflow pipe from moving to the positioning structure for positioning work. 5. This invention features a collection structure that automatically collects the shaped airflow tubes, facilitating centralized processing of the airflow tubes during the orifice enlargement process. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a perforation device for an automotive airflow pipe according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure below the workbench in an embodiment of the present invention; Figure 3 This is a schematic diagram of the movable hole-expanding structure and the heating structure in an embodiment of the present invention; Figure 4 This is a schematic diagram of the movable clamping structure in an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure below the middle platform in an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the second drive groove on the workbench in an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure at the U-shaped frame in an embodiment of the present invention; Figure 8 This is an embodiment of the present invention. Figure 7 Enlarged view of the structure at point A; Figure 9 This is a schematic diagram of the structure inside the horizontal plate in an embodiment of the present invention; Figure 10 This is an embodiment of the present invention. Figure 9 Enlarged view of the structure at point B.

[0016] Explanation of reference numerals in the attached drawings: 1. Workbench; 2. Support; 3. U-shaped frame; 4. Horizontal plate; 5. First mounting plate; 6. First cylinder; 7. First moving block; 8. Fixed rod; 9. Shaping block; 10. First guide groove; 11. Moving table; 12. Second mounting plate; 13. Hydraulic cylinder; 14. Hole enlarging block; 15. First moving plate; 16. Second guide groove; 17. Second moving plate; 18. Intermediate table; 19. Third mounting plate; 20. Motor; 21. Bidirectional screw; 22. Clamping seat; 23. Slot; 24. Clamping block; 25. Second cylinder; 26. Second moving block; 27. Third guide groove; 28. Rotating column; 29. ​​Third gear; 30. Fixing block; 31. Drive frame; 32. Protrusion; 33. Insert rod; 34. Third moving block; 35. L-shaped plate; 36. Arc plate; 37. Heating plate; 38. Fourth guide groove; 39. L-shaped rod; 4 0. First driving plate; 41. First driving groove; 42. Intermediate groove; 43. First inner groove; 44. Base plate; 45. Adjusting plate; 46. Vertical handle; 47. Flip handle; 48. Pressing plate; 49. Flipping shaft; 50. First gear; 51. L-shaped bar; 52. First slider; 53. First slide groove; 54. Third moving plate; 55. Second slide groove; 56. Second slider; 57. Through rod; 58. Square plate; 59. 60. Guide groove; 61. Threaded rod; 62. Rotating block; 63. Moving sleeve; 64. Through groove; 65. Top plate; 66. Second inner groove; 67. Rotating rod; 68. Second gear; 69. First driving bar; 70. Second driving bar; 71. Connecting rod; 72. Inner plate; 73. Electric telescopic rod; 74. Vertical rod; 75. Sleeve; 76. Placement plate; 77. Collection frame; 78. Discharge groove; 79. Insert bar; 70. Second driving groove. Detailed Implementation

[0017] The following is in conjunction with the appendix Figures 1-10 The present invention will be described in further detail below.

[0018] Reference Figures 1-10 This invention discloses a hole-expanding device for an automotive airflow pipe, comprising a worktable 1 and a support 2. A shaping structure is provided on the upper left side of the worktable 1, a movable hole-expanding structure is provided on the upper right side of the worktable 1, a movable clamping structure is provided in the middle of the worktable 1, a transmission structure is provided on the lower right side of the worktable 1, and supports 2 are provided on both sides of the lower part of the worktable 1. A heating structure is provided in the middle of the worktable 1, and a collection structure is provided between the two supports 2. The shaping structure includes a U-shaped frame 3 fastened to the left side of the workbench 1 by bolts, a horizontal plate 4 fastened to the middle of one side of the U-shaped frame 3 by screws, a flip-and-close structure provided on the horizontal plate 4, a first mounting plate 5 connected to the workbench 1 near the U-shaped frame 3, a first cylinder 6 mounted on the first mounting plate 5, a first moving block 7 connected to one end of the output shaft of the first cylinder 6, a fixed rod 8 connected to the upper side of one side of the first moving block 7, and a shaping block 9 mounted on one end of the fixed rod 8; The movable reaming structure includes a first guide groove 10 on the right side of the workbench 1, a first movable plate 15 slidably disposed in the first guide groove 10, a movable stage 11 disposed on the workbench 1 at the first guide groove 10, the movable stage 11 being mounted on the top of the first movable plate 15, two second mounting plates 12 being mounted on the first movable plate 15, a hydraulic cylinder 13 being mounted on one of the second mounting plates 12, and a reaming block 14 being disposed on one end of the output shaft of the hydraulic cylinder 13 passing through the other second mounting plate 12. The movable clamping structure includes a second guide groove 16 opened on the worktable 1 near the first guide groove 10. A second movable plate 17 is slidably arranged in the second guide groove 16. An intermediate platform 18 is set at the top of the second movable plate 17 through a rotation switching structure. A second cylinder 25 is installed in the middle of the front and rear sides of the intermediate platform 18. A third guide groove 27 is opened on the front and rear sides of the intermediate platform 18. A second movable block 26 is slidably arranged in the third guide groove 27. A clamping seat 22 is set on the second movable block 26. Several slots 23 are opened on the side of the two clamping seats 22 that are close to each other. An insert 78 is movably inserted into each slot 23. A clamping block 24 is set on one end of the insert 78 that protrudes from the clamping seat 22. A spring is connected between the other end of the insert 78 and the inner wall of the slot 23. The transmission structure includes two third mounting plates 19 connected below the worktable 1. The two third mounting plates 19 are respectively positioned near the first guide groove 10 and the second guide groove 16. A motor 20 is mounted on one of the third mounting plates 19. One end of the output shaft of the motor 20 is connected to a bidirectional screw 21, and one end of the bidirectional screw 21 is rotatably connected to the other third mounting plate 19. The bidirectional screw 21 passes through threaded grooves formed on the first moving plate 15 and the second moving plate 17. First, the airflow pipe to be enlarged is placed on the intermediate table 18. The second cylinder 25 is started to drive the two clamping seats 22 to move towards each other, thereby driving the two sets of clamping blocks 24 to move and press against the airflow pipe. The clamping blocks 24 drive the insert 78 to move and compress the spring. In this way, airflow pipes of different shapes can be clamped on the intermediate table 18. After the airflow pipe is clamped, the motor 20 on the third mounting plate 19 is started to drive the double-headed screw 21 to move the insert 78 to press the spring. Rotating the screw 21, the two sections of the double-sided screw 21 have opposite thread directions. The first moving plate 15 and the second moving plate 17 move synchronously towards each other on the rotating double-sided screw 21, thereby driving the moving table 11 and the intermediate table 18 to move towards each other. When the intermediate table 18 moves the airflow pipe to the hole-expanding position, the hydraulic cylinder 13 on the second mounting plate 12 is activated to move the hole-expanding block 14 into the port of the airflow pipe to perform hole-expanding work. During hole-expanding, the motor 20 drives the double-sided screw 21 to rotate in the opposite direction, and the intermediate table 18 and the moving table 11 move away from each other. In this way, the intermediate table 18 moves the expanded airflow pipe to a position close to the shaping block 9. At this time, the first cylinder 6 on the first mounting plate 5 can be activated to move the shaping block 9 into the port of the expanded airflow pipe to perform shaping work at the port of the expanded airflow pipe, thereby improving the quality of hole-expanding work.

[0019] See Figures 4-6 The rotary switching structure includes a rotary column 28 rotatably connected to the top of the second movable plate 17, a third gear 29 fixedly sleeved at the bottom of the rotary column 28, the top of the rotary column 28 fixedly connected to the intermediate platform 18, and a first driving structure set between the rotary column 28 and the worktable 1. The first driving structure includes a fixed block 30 located at the top of the second movable plate 17 near the third gear 29. A driving frame 31 moves through the fixed block 30. One side of the driving frame 31 has teeth that mesh with the third gear 29. Both ends of the driving frame 31 have protrusions 32, and each protrusion 32 has a fixed insert rod 33 passing through it. Second driving grooves 79 are formed on the worktable 1 below the two insert rods 33. The bottom ends of the insert rods 33 are movably inserted into the second driving grooves 79. When the intermediate platform 18 moves towards the shaping block 9, the intermediate platform 18 drives the insert rods 33... The bottom end slides in the second drive groove 79, thereby driving the drive frame 31 to move in the fixed block 30. Through the third gear 29, the rotating column 28 and the intermediate platform 18 are rotated half a turn as a whole, thereby rotating and switching one end of the airflow pipe after the hole is enlarged to the shaping block 9. After the shaping block 9 is moved, it can be smoothly inserted into the port of the airflow pipe after the hole is enlarged for shaping. During the shaping process, the airflow pipe can be released on the intermediate platform 18, so that the intermediate platform 18 can be smoothly reset to continue to enlarge the hole of the next airflow pipe, making full use of the working time and improving work efficiency.

[0020] See Figure 1 and Figure 3 The heating structure includes a fourth guide groove 38 located on the front and rear sides of the middle of the worktable 1. A third moving block 34 is slidably arranged in the fourth guide groove 38. Each third moving block 34 is connected to an L-shaped plate 35. An arc plate 36 is provided at one end of the L-shaped plate 35. A heating plate 37 is fixedly embedded in the inner wall of the arc plate 36. A second driving structure is provided between the third moving block 34 and the moving table 11. The second driving structure includes a first driving plate 40 connected to one side of the third moving block 34. A first driving groove 41 is opened on the first driving plate 40. An L-shaped rod 39 is movably inserted into the first driving groove 41. One end of the L-shaped rod 39 is connected to the moving table 11. During the process of the moving table 11 moving towards the enlarged hole position, the moving table 11 drives one end of the L-shaped rod 39 to slide in the first driving groove 41. By using the pressure of one end of the L-shaped rod 39 on the groove wall of the first driving groove 41, the first driving plate 40 is pushed to move closer to the moving table 11, thereby driving the inner wall heating plate 37 of the arc plate 36 to press against the airflow pipe and the enlarged hole position for heating.

[0021] See Figures 7-10The flipping and clamping structure includes a central groove 42 on the horizontal plate 4. First inner grooves 43 are provided on the lower part of the inner walls on both the front and rear sides of the central groove 42. A base plate 44 is slidably disposed in the first inner groove 43. An adjusting plate 45 is connected below the base plate 44. Two vertical handles 46 are provided on the adjusting plate 45 via an adjusting structure. A through groove 63 is provided on the adjusting plate 45 for the vertical handles 46 to pass through. The bottom end of the vertical handle 46 rotates through a flipping shaft 49. A first gear 50 is fixedly sleeved in the middle of the flipping shaft 49. Flipping handles 47 are fixedly sleeved on both ends of the flipping shaft 49. A clamping plate 48 is installed at one end of each flipping handle 47. A first sliding groove 5 is provided on the front of the horizontal plate 4. 3. A first slider 52 is slidably arranged in the first slide groove 53. A third moving plate 54 is connected to the first slider 52. A second slide groove 55 is opened on the third moving plate 54. A second slider 56 is slidably arranged in the second slide groove 55. A through rod 57 is connected to the second slider 56. A square plate 58 is connected to the front of the horizontal plate 4 above the first slide groove 53. A guide groove 59 is opened on the square plate 58. The through rod 57 moves through the guide groove 59. An L-shaped strip 51 is connected to the bottom of the second slider 56. The L-shaped strip 51 is provided with teeth that mesh with the first gear 50. A third driving structure is provided between the bottom plate 44 and the first moving block 7. The third driving structure includes a second inner groove 65 located above the inner walls of the front and rear sides of the intermediate groove 42. A top plate 64 is slidably disposed in the second inner groove 65. A first driving bar 68 is disposed below the top plate 64. A second driving bar 69 is disposed above the bottom plate 44. A rotating rod 66 is rotatably connected at the middle of the inner walls of the front and rear sides of the intermediate groove 42. A second gear 67 is fixedly sleeved at the middle of the rotating rod 66. The first driving bar 68 and the second driving bar 69 are provided with teeth that mesh with the second gear 67. A connecting rod 70 is connected to the left end of the top plate 64. The bottom end of the connecting rod 70 is connected to the first moving block 7. The adjustment structure includes a threaded rod 60 that rotates through an adjustment plate 45. Rotating blocks 61 are fixedly fitted at both ends of the threaded rod 60. A movable sleeve 62 is fitted onto the threaded rod 60, and the inner wall of the movable sleeve 62 is threaded. Two vertical handles 46 are fixedly fitted at their top ends onto the movable sleeve 62. Through holes are provided on the vertical handles 46 for the threaded rod 60 to pass through. When the threaded rod 60 is rotated using the rotating blocks 61, the movement of the movable sleeve 62 on the threaded rod 60 allows for flexible adjustment of the position of the pressing plate 48 on the adjustment plate 45 according to the actual length of the airflow pipe. During the process of the first cylinder 6 driving the shaping block 9 into the airflow pipe for shaping, the connecting rod 70 on the first movable block 7 drives the top plate 64 to move within the first inner groove 43. Furthermore, the first driving bar 68, the second gear 67, and the second driving bar 69 drive the bottom plate 44 to move within the first inner groove 43. The horizontal plate 4 moves in the opposite direction, thereby causing the clamping plate 48 to move towards the side closer to the airflow pipe. During the movement of the adjusting plate 45 and the third moving plate 54 on the horizontal plate 4, the through rod 57 slides in the guide groove 59, thereby causing the second slider 56 to move towards the horizontal plate 4 on the third moving plate 54, thereby causing the L-shaped strip 51 to move. The first gear 50 drives the flipping shaft 49 and the flipping handle 47 to flip downward as a whole, thereby flipping the flipping handle 47 and the clamping plate 48 to the downward state. The moving clamping plate 48 can smoothly clamp to the other end of the airflow pipe, which not only ensures the normal shaping of the airflow pipe, but can also be used to clamp the airflow pipe. This allows the airflow pipe to be released on the intermediate table 18, so that the intermediate table 18 can be smoothly reset, and the next airflow pipe can be enlarged.

[0022] See Figure 2 The collecting structure includes an inner plate 71 connected between two supports 2. An electric telescopic rod 72 is installed on the left side of the inner plate 71. The top of the output shaft of the electric telescopic rod 72 is connected to a placement plate 75. A collecting frame 76 is movably inserted into a placement groove on the placement plate 75. A feeding groove 77 is opened on the worktable 1 above the collecting frame 76. Sleeves 74 are connected to the four corners of the placement plate 75. Vertical rods 73 are movably inserted into the sleeves 74. The bottom end of the vertical rods 73 is connected to the inner plate 71. After shaping, the electric telescopic rod 72 is activated to move the collecting frame 76 upward into the feeding groove 77. At this time, the first cylinder 6 drives the shaping block 9 to move in the opposite direction and reset, and drives the pressing plate 48 to move in the opposite direction and flip to reset. In this way, the airflow pipe that has lost its support can be fed into the collecting frame 76, realizing the automatic feeding function.

[0023] The implementation principle of the enlarging device for an automotive airflow pipe according to an embodiment of the present invention is as follows: First, the airflow pipe to be enlarged is placed on the intermediate platform 18. The second cylinder 25 is activated to drive the two clamping seats 22 to move towards each other, thereby driving the two sets of clamping blocks 24 to move and press against the airflow pipe. The clamping blocks 24 drive the insert 78 to move and compress the spring. In this way, airflow pipes of different shapes can be clamped on the intermediate platform 18. After the airflow pipe is clamped, the motor 20 on the third mounting plate 19 is activated to drive the bidirectional screw 21 to rotate. The two sections of the bidirectional screw 21 have opposite thread directions. The first moving plate 15 and the second moving plate 17 move synchronously towards each other on the rotating bidirectional screw 21, thereby driving the moving platform 11 and the intermediate platform. The middle platform 18 moves towards the side that is closer to each other. During the movement, the moving platform 11 drives one end of the L-shaped rod 39 to slide in the first driving groove 41. By using the pressure of one end of the L-shaped rod 39 against the groove wall of the first driving groove 41, the first driving plate 40 is pushed towards the moving platform 11, thereby driving the inner wall heating plate 37 of the arc plate 36 to press against the airflow pipe at the expansion position for heating. When the middle platform 18 drives the airflow pipe to the expansion position, the hydraulic cylinder 13 on the second mounting plate 12 is activated to drive the expansion block 14 to move and insert it into the port of the airflow pipe to perform the expansion work. During the expansion, the motor 20 drives the bidirectional screw 21 to rotate in the opposite direction, and the middle platform 18 and the moving platform 11 move away from each other. In this way, the middle platform 18 drives the expansion block 21 to rotate in the opposite direction. When the airflow pipe after the hole reaches the point near the shaping block 9, the first cylinder 6 on the first mounting plate 5 can be activated to move the shaping block 9 into the port of the airflow pipe after the hole is enlarged for shaping. During the process of the first cylinder 6 moving the shaping block 9 into the airflow pipe for shaping, the connecting rod 70 on the first moving block 7 moves the top plate 64 in the first inner groove 43. And through the first driving bar 68, the second gear 67 and the second driving bar 69, the bottom plate 44 moves in the opposite direction on the horizontal plate 4, thereby moving the pressing plate 48 towards the side closer to the airflow pipe. During the movement of the adjusting plate 45 and the third moving plate 54 on the horizontal plate 4, the through rod 57 slides in the guide groove 59, thereby moving the second slider 56 on the third moving plate 54. The device moves towards the horizontal plate 4, thereby moving the L-shaped strip 51. The first gear 50 drives the flipping shaft 49 and flipping handle 47 to flip downwards, thus flipping the flipping handle 47 and the clamping plate 48 to a downward position. This allows the moving clamping plate 48 to smoothly press against the other end of the airflow pipe, ensuring proper shaping of the airflow pipe and clamping it. This allows the airflow pipe to be released on the intermediate table 18, enabling it to return to its original position for enlarging the next airflow pipe. After shaping, the electric telescopic rod 72 moves the collecting frame 76 into the feeding trough 77. At this time, the first cylinder 6 moves the shaping block 9 in the opposite direction to reset, and also moves the clamping plate 48 in the opposite direction and flips it to reset.The unsupported airflow pipe can then be fed into the collection frame 76, achieving automatic feeding and thus enabling the enlargement of the airflow pipe's opening.

[0024] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A device for expanding the opening of an automotive airflow pipe, comprising a worktable (1) and a support (2), characterized in that: A shaping structure is provided on the left side of the workbench (1), a movable expanding structure is provided on the right side of the workbench (1), a movable clamping structure is provided in the middle of the workbench (1), a transmission structure is provided on the right side of the bottom of the workbench (1), brackets (2) are supported on both sides of the bottom of the workbench (1), a heating structure is provided in the middle of the workbench (1), and a collection structure is provided between the two brackets (2). The shaping structure includes a U-shaped frame (3) fastened to the left side of the workbench (1) by bolts. A horizontal plate (4) is fastened to the middle of one side of the U-shaped frame (3) by screws. A flip-and-tighten structure is provided on the horizontal plate (4). A first mounting plate (5) is connected to the workbench (1) near the U-shaped frame (3). A first cylinder (6) is installed on the first mounting plate (5). One end of the output shaft of the first cylinder (6) is connected to a first moving block (7). A fixing rod (8) is connected to the upper side of one side of the first moving block (7). A shaping block (9) is installed at one end of the fixing rod (8). The movable reaming structure includes a first guide groove (10) on the workbench (1) near the right side, a first movable plate (15) is slidably disposed in the first guide groove (10), a movable stage (11) is disposed on the workbench (1) at the first guide groove (10), the movable stage (11) is mounted on the top of the first movable plate (15), two second mounting plates (12) are mounted on the first movable plate (15), a hydraulic cylinder (13) is mounted on one of the second mounting plates (12), and a reaming block (14) is disposed on one end of the output shaft of the hydraulic cylinder (13) that passes through the other second mounting plate (12). The movable clamping structure includes a second guide groove (16) opened on the worktable (1) near the first guide groove (10). A second movable plate (17) is slidably arranged in the second guide groove (16). An intermediate platform (18) is set at the top of the second movable plate (17) through a rotation switching structure. A second cylinder (25) is installed at the middle of the front and rear sides of the intermediate platform (18). A third guide groove (27) is opened on the front and rear sides of the intermediate platform (18). A second movable block (26) is slidably arranged in the third guide groove (27). A clamping seat (22) is set on the second movable block (26). Several slots (23) are opened on the side of the two clamping seats (22) that are close to each other. A strip (78) is movably inserted into each slot (23). A clamping block (24) is set on one end of the strip (78) that protrudes from the clamping seat (22). A spring is connected between the other end of the strip (78) and the inner wall of the slot (23).

2. The orifice-expanding device for an automotive airflow pipe according to claim 1, characterized in that: The transmission structure includes two third mounting plates (19) connected below the workbench (1). The two third mounting plates (19) are respectively located close to the first guide groove (10) and the second guide groove (16). A motor (20) is mounted on one of the third mounting plates (19). One end of the output shaft of the motor (20) is connected to a bidirectional screw (21). One end of the bidirectional screw (21) is rotatably connected to the other third mounting plate (19). The bidirectional screw (21) passes through the threaded grooves opened on the first moving plate (15) and the second moving plate (17).

3. The orifice-expanding device for an automotive airflow pipe according to claim 1, characterized in that: The rotating switching structure includes a rotating column (28) rotatably connected to the top of the second moving plate (17), a third gear (29) is fixedly sleeved at the bottom of the rotating column (28), the top of the rotating column (28) is fixedly connected to the intermediate platform (18), and a first driving structure is provided between the rotating column (28) and the worktable (1).

4. The orifice-expanding device for an automotive airflow pipe according to claim 3, characterized in that: The first driving structure includes a fixed block (30) located at the top of the second moving plate (17) near the third gear (29). The fixed block (30) moves through the driving frame (31). The driving frame (31) has teeth on one side that mesh with the third gear (29). The driving frame (31) has protrusions (32) at both ends. Each protrusion (32) has a fixed insert rod (33) passing through it. The worktable (1) has a second driving groove (79) located below the two insert rods (33). The bottom end of the insert rod (33) moves into the second driving groove (79).

5. The orifice-expanding device for an automotive airflow pipe according to claim 1, characterized in that: The heating structure includes a fourth guide groove (38) opened on the front and rear sides of the middle of the workbench (1). A third moving block (34) is slidably arranged in the fourth guide groove (38). Each third moving block (34) is connected to an L-shaped plate (35). An arc plate (36) is provided at one end of the L-shaped plate (35). A heating plate (37) is fixedly embedded in the inner wall of the arc plate (36). A second driving structure is provided between the third moving block (34) and the moving table (11).

6. The orifice-expanding device for an automotive airflow pipe according to claim 5, characterized in that: The second driving structure includes a first driving plate (40) connected to one side of the third moving block (34), a first driving groove (41) is opened on the first driving plate (40), an L-shaped rod (39) is movably inserted into the first driving groove (41), and one end of the L-shaped rod (39) is connected to the moving table (11).

7. The orifice-expanding device for an automotive airflow pipe according to claim 1, characterized in that: The flipping and clamping structure includes a central groove (42) on the horizontal plate (4). A first inner groove (43) is provided on the lower part of the inner walls on both the front and rear sides of the central groove (42). A base plate (44) is slidably disposed in the first inner groove (43). An adjusting plate (45) is connected below the base plate (44). Two vertical handles (46) are provided on the adjusting plate (45) via an adjusting structure. A through groove (63) is provided on the adjusting plate (45) for the vertical handles (46) to pass through. The bottom end of the vertical handle (46) rotates through a flipping shaft (49). A first gear (50) is fixedly sleeved in the middle of the flipping shaft (49). Flipping handles (47) are fixedly sleeved on both ends of the flipping shaft (49). A clamping plate (48) is installed at one end of each flipping handle (47). A first sliding groove (53) is provided on the front of the horizontal plate (4). The first slider (52) is slidably arranged in the first groove (53). The first slider (52) is connected to the third moving plate (54). The third moving plate (54) has a second groove (55). The second slider (56) is slidably arranged in the second groove (55). The second slider (56) is connected to the top of the second slider (56). The front of the horizontal plate (4) is connected to the square plate (58) above the first groove (53). The square plate (58) has a guide groove (59). The through rod (57) moves through the guide groove (59). The second slider (56) is connected to the bottom of the L-shaped strip (51). The L-shaped strip (51) has teeth that mesh with the first gear (50). The bottom plate (44) and the first moving block (7) are provided with a third driving structure.

8. The orifice-expanding device for an automotive airflow pipe according to claim 7, characterized in that: The third driving structure includes a second inner groove (65) located above the inner walls on both sides of the middle groove (42). A top plate (64) is slidably disposed in the second inner groove (65). A first driving strip (68) is disposed below the top plate (64). A second driving strip (69) is disposed above the bottom plate (44). A rotating rod (66) is rotatably connected at the middle of the inner walls on both sides of the middle groove (42). A second gear (67) is fixedly sleeved at the middle of the rotating rod (66). Teeth that mesh with the second gear (67) are provided on the first driving strip (68) and the second driving strip (69). A connecting rod (70) is connected at the left end below the top plate (64). The bottom end of the connecting rod (70) is connected to the first moving block (7).

9. The orifice-expanding device for an automotive airflow pipe according to claim 1, characterized in that: The collecting structure includes an inner plate (71) connected between two supports (2). An electric telescopic rod (72) is installed on the upper left side of the inner plate (71). The top of the output shaft of the electric telescopic rod (72) is connected to a placement plate (75). A collecting frame (76) is movably inserted into the placement groove on the placement plate (75). A feeding groove (77) is opened on the workbench (1) above the collecting frame (76). Sleeves (74) are connected to the four corners below the placement plate (75). A vertical rod (73) is movably inserted into the sleeve (74). The bottom end of the vertical rod (73) is connected to the inner plate (71).

10. The orifice-expanding device for an automotive airflow pipe according to claim 7, characterized in that: The adjustment structure includes a threaded rod (60) that rotates through the adjustment plate (45). Rotating blocks (61) are fixedly sleeved on both ends of the threaded rod (60). A movable sleeve (62) is sleeved on the threaded rod (60). The inner wall of the movable sleeve (62) is provided with threads. The top ends of two vertical handles (46) are fixedly sleeved on both ends of the movable sleeve (62). The vertical handles (46) are provided with through holes for the threaded rod (60) to move through.

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