A bending device for automobile air flow pipe

Abstract

The present invention discloses a bending device for an automobile airflow pipe, which belongs to the field of automobile production technology, and includes a main body module and an adjustment and adaptation module. The main body module includes a main frame, and the main frame is connected to a support frame. The adjustment and adaptation module includes a driving component arranged between the main frame and the support frame, and a plurality of right-angled triangles are connected to the driving component. The plurality of right-angled triangles are evenly divided into two groups, and the two groups of right-angled triangles are symmetrically arranged. Through the arrangement of the driving component, the lifting component, the displacement component, the pressure wheel, the rack, the connection component and the right-angled triangle, the device can perform bending of various radians, and automatically adjust the spacing and height of the pressure wheels according to different bending conditions. The various components can cooperate with each other, and only the driving component needs to be manipulated, so that the device can perform bending of different radians, and the overall operation is more convenient, thereby improving the functionality of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile production, and more particularly to a bending device for automobile airflow pipes. Background Art

[0002] Automobile airflow pipes usually refer to automobile intake pipes or air guide pipes. In gasoline engines, the intake pipes need to consider issues such as combustion atomization, evaporation, distribution, and the use of pressure waves to ensure that the fuel and air can be fully mixed, achieve more efficient combustion, and improve the engine's power output and fuel economy. Automobile airflow pipes need to be bent during the production process, so bending equipment is needed to perform the operation.

[0003] A search revealed patent number CN117225947A, which discloses a bending device that addresses the aforementioned related technologies. The device comprises: an ejector rod; a wheel disposed at the front end of the ejector rod, having a groove formed therein for clamping the covered pipe during bending; and a pair of left and right rollers for supporting the covered pipe during bending. The groove comprises: a first groove formed in a tapered shape; and a second groove having a connecting groove connected to the first groove, the connecting groove having a width greater than the outer diameter of the pipe included in the covered pipe.

[0004] Regarding the related technologies mentioned above, existing bending equipment is usually in the above-mentioned state. Traditional bending equipment has a simple structure and can only achieve single-radian pipe bending operations. If bending at different angles is required, it can often only be achieved by replacing specific components or the entire set of equipment, and the operation process is complicated and time-consuming. Although some CNC bending equipment can achieve multi-angle bending, parameter adjustment relies on cumbersome control panel operation. This not only requires high professional skills of operators, but also has high equipment procurement and maintenance costs, resulting in significant obstacles to its popularization and application in actual production. In view of the demand for diversified bending angles in the production process of airflow pipes, a bending equipment for automotive airflow pipes is proposed. Summary of the Invention

[0005] In order to solve the above problems, the present invention provides a bending device for automobile airflow pipes, which adopts the following technical solutions:

[0006] 7. The swiftly and minutely adjusting device for a wood-planer working table as claimed in claim 1, wherein said linking rod and said adjusting base are pivotally connected to each other with a bolt, and said bolt has a round shank to contact with said linking rod.

[0007] Furthermore, the drive assembly includes a fixed tube fixedly connected between the rear end face of the main frame and the support frame, a first bidirectional screw is rotatably connected between the rear end face of the main frame and the support frame, the first bidirectional screw is located inside the fixed tube, and two movable grooves are provided on the outer surface of the fixed tube, two movable circular plates are slidably connected between the insides of the two movable grooves, the two movable circular plates are both threadedly connected to the first bidirectional screw, and the two groups of right-angled triangle plates are respectively fixedly connected to the adjacent sides of the two movable circular plates, the rear end face of the main frame is fixedly connected to a driving motor, and the output shaft of the driving motor is fixedly connected to one end of the first bidirectional screw.

[0008] Furthermore, the lifting assembly includes two lifting slots, both of which are opened on the rear end surface of the main frame, and a cylinder is installed inside the two lifting slots. A lifting plate is slidably connected inside the two lifting slots. The bottoms of the two lifting plates are respectively fixedly connected to the output shafts of the two cylinders. A limit rod is fixedly connected between the two lifting plates. A second bidirectional screw is rotatably connected between the two lifting plates, and the rack is fixedly connected between the two lifting plates.

[0009] Furthermore, the displacement assembly includes a displacement plate slidably connected to the outer surface of the limit rod, the interior of the displacement plate is threadedly connected to the outer surface of the second bidirectional screw, the bottom of the displacement plate is fixedly connected to the first sleeve, the interior of the first sleeve is movably connected to the first inner slide rod, the interior of the displacement plate is rotatably connected to the first lifting screw, the outer surface of the first lifting screw is threadedly connected to the interior of the first inner slide rod, and the pressure wheel is rotatably connected to the bottom end of the first inner slide rod.

[0010] Furthermore, the displacement assembly also includes a first pinion fixedly connected to the top of the first lifting screw, a large gear is rotatably connected to the top of the displacement plate, the outer surface of the large gear is engaged with the outer surface of the first pinion, and a second pinion is fixedly connected to the top of the large gear, and the outer surface of the second pinion is engaged with the outer surface of the rack.

[0011] Furthermore, the connecting assembly includes a fixed plate fixedly connected to the rear end face of the inner wall of the main frame, the internal rotation of the fixed plate is connected to an inner rotating column, one end of the second bidirectional screw is provided with a slot, the internal movably connected to a card block of the slot, and the card block is fixedly connected to one end of the inner rotating column.

[0012] Furthermore, the connecting assembly also includes a long rod rotatably connected to the rear end face of the main frame, one end of the long rod and the outer surface of the output shaft of the driving motor are fixedly connected with a transmission roller, a transmission belt is connected between the outer surfaces of the two transmission rollers, and the other end of the long rod and the other end of the inner rotating column are fixedly connected with a bevel gear, and the outer surfaces of the two bevel gears are meshed with each other.

[0013] Furthermore, the pressing assembly includes a fixed seat fixedly connected to the upper part of the main frame, the bottom of the fixed seat is fixedly connected to a second sleeve, the interior of the second sleeve is movably connected to a second inner slide rod, the interior of the fixed seat is rotatably connected to a second lifting screw, the outer surface of the second lifting screw is connected to the internal bolt of the second inner slide rod, the top end of the second lifting screw is fixedly connected to a rudder, and the bottom end of the second inner slide rod is provided with a pressing groove.

[0014] Furthermore, the heating assembly includes a mounting rod fixedly connected to the outer surface of the second inner slide rod, one end of the mounting rod is fixedly connected to an air pipe, the outer surface of the air pipe is fixedly connected to multiple nozzles, and one end of the air pipe is fixedly connected to a connecting hose.

[0015] Furthermore, the heating component also includes a bellows fixedly connected to the outer surface of the fixing seat, the hose is connected to the bellows, the outer surface of the bellows is fixedly connected to a fan, and a plurality of heating wires are installed inside the bellows.

[0016] In summary, the present invention has the following beneficial technical effects:

[0017] (1) The present invention arranges a driving component, a lifting component, a displacement component, a pressure wheel, a rack, a connecting component and a right-angled triangle plate, so that the device can bend with various curvatures, and automatically adjust the spacing and height of the pressure wheels according to different bending conditions. The various components can cooperate with each other, and only the driving component needs to be operated, so that the device can bend with different curvatures, making the overall operation more convenient and improving the functionality of the device;

[0018] (2) The present invention preheats the airflow tube before bending by setting a heating wire, a blower and a nozzle, thereby significantly reducing the difficulty of bending hard materials (such as stainless steel and aluminum alloy), while reducing material stress, cracks or rebound problems caused by cold bending, and improving the bending effect;

[0019] (3) The present invention fixes the airflow tube by setting a pressing component, thereby making it more stable when bending and preventing it from shaking during bending and causing the bending position to change. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the overall structure of the adaptation module of the present invention;

[0022] Figure 3 is a schematic structural diagram of the connection assembly of the present invention;

[0023] Figure 4 is a schematic cross-sectional structural diagram of the drive assembly of the present invention;

[0024] Figure 5 Schematic diagram of the cross-sectional structure of the displacement assembly of the present invention;

[0025] Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure at point A;

[0026] Figure 7 For the present invention Figure 5 A schematic diagram of the enlarged structure at point B;

[0027] Figure 8 It is a structural schematic diagram of the heating component of the present invention;

[0028] Figure 9 It is a schematic cross-sectional structural diagram of the pressing assembly of the present invention.

[0029] Description of the numbers in the figure:

[0030] 100, main module; 110, main frame; 120, support frame;

[0031] 200, adjustment adapter module; 210, drive assembly; 211, fixed tube; 212, first bidirectional screw; 213, movable circular plate; 214, drive motor; 220, lifting assembly; 221, cylinder; 222, lifting plate; 223, limit rod; 224, second bidirectional screw; 230, displacement assembly; 231, displacement plate; 232, first sleeve; 233, first inner slide rod; 234, first lifting screw; 235, first pinion; 236, large Gear; 237, second pinion; 240, pressure wheel; 250, rack; 260, connecting assembly; 261, fixing plate; 262, inner rotating column; 263, clamping block; 264, long rod; 265, transmission roller; 266, transmission belt; 267, bevel gear; 268, clamping groove; 270, right-angled triangle plate; 280, pressing assembly; 281, fixing seat; 282, second sleeve; 283, second inner sliding rod; 284, second lifting screw; 285, steering wheel;

[0032] 290. Heating assembly; 291. Mounting rod; 292. Air pipe; 293. Nozzle; 294. Bellows; 295. Fan; 296. Heating wire. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention in specific circumstances.

[0036] The following is combined with Figure 1-9 The present invention is described in further detail.

[0037] See also Figure 1-9 A bending device for an automobile airflow pipe includes a main body module 100 and an adjustment and adaptation module 200. The main body module 100 includes a main frame 110, and the main frame 110 is connected to a support frame 120. The adjustment and adaptation module 200 includes a driving assembly 210 arranged between the main frame 110 and the support frame 120. The driving assembly 210 is connected to a plurality of right-angled triangles 270. The plurality of right-angled triangles 270 are evenly divided into two groups. The two groups of right-angled triangles 270 are symmetrically arranged and the two groups of right-angled triangles 270 are staggered in a ring. The rear end surface of the main frame 110 is provided with a A lifting assembly 220 is provided, and a rack 250 and two displacement assemblies 230 are provided on the lifting assembly 220. The two displacement assemblies 230 are both connected to the rack 250. The two displacement assemblies 230 are rotatably connected to the pressure wheels 240. A connecting assembly 260 is provided between the rear end face of the main frame 110 and the driving assembly 210. The connecting assembly 260 is connected to the lifting assembly 220. A pressing assembly 280 is fixedly connected to the upper part of the main frame 110. The pressing assembly 280 is located between the two groups of right-angled triangles 270. Two heating assemblies 290 are provided on the pressing assembly 280.

[0038] When in use, the airflow tube that needs to be operated is placed in the middle of the two sets of right-angled triangles 270 and between the two pressure wheels 240. The pressing assembly 280 is rotated to fix the airflow tube. After fixing, the heating assembly 290 is turned on. The heating assembly 290 will heat the pipe, thereby improving the subsequent bending effect. The lifting assembly 220 is turned on to drive the two displacement assemblies 230 and the pressure wheel 240 to descend. At this time, the lifting assembly 220 is separated from the connecting assembly 260, so that the two pressure wheels 240 press the airflow tube. The airflow tube will fit into the middle of the two sets of right-angled triangles 270, thereby bending the airflow tube. After bending, the lifting assembly 220 drives the pressure wheel 240 to lift up again. At this time, the connecting assembly 260 is reconnected to the lifting assembly 220. When the bending curvature needs to be adjusted The staff turns on the driving component 210, and the driving component 210 will drive the two groups of right-angled triangles 270 to plug into each other, so that the circumference of the middle part of the two groups of right-angled triangles 270 will gradually increase. At the same time, the driving component 210 drives the connecting component 260, and the connecting component 260 drives the lifting component 220 to drive the two displacement components 230. The two displacement components 230 will adjust the spacing according to the plugging of the two groups of right-angled triangles 270. At the same time, the displacement component 230 is driven by the rack 250 to adjust the height of the pressing wheel 240, so as to automatically adjust the spacing and height of the pressing wheel 240 according to different bending conditions. The various components can cooperate with each other, and only the driving component 210 needs to be controlled, so that the equipment can perform bending of different radians, and the overall operation is more convenient.

[0039] The driving assembly 210 includes a fixed tube 211 fixedly connected between the rear end face of the main frame 110 and the support frame 120, and a first bidirectional screw rod 212 is rotatably connected between the rear end face of the main frame 110 and the support frame 120. The first bidirectional screw rod 212 is located inside the fixed tube 211, and the outer surface of the fixed tube 211 is provided with two movable grooves. Two movable circular plates 213 are slidably connected between the interiors of the two movable grooves. The two movable circular plates 213 are both threadedly connected to the first bidirectional screw rod 212. Two sets of right-angled triangles 270 are respectively fixedly connected to the adjacent sides of the two movable circular plates 213. The rear end face of the main frame 110 is fixedly connected to a driving motor 214. The output shaft of the driving motor 214 is fixed to one end of the first bidirectional screw rod 212 The lifting assembly 220 includes two lifting slots, both of which are opened on the rear end surface of the main frame 110. A cylinder 221 is installed inside the two lifting slots. A lifting plate 222 is slidably connected to the inside of the two lifting slots. The bottoms of the two lifting plates 222 are fixedly connected to the output shafts of the two cylinders 221 respectively. A limiting rod 223 is fixedly connected between the two lifting plates 222. A second bidirectional screw 224 is rotatably connected between the two lifting plates 222. The rack 250 is fixedly connected between the two lifting plates 222. The displacement assembly 230 includes a displacement plate 231 slidably connected to the outer surface of the limiting rod 223. The interior of the displacement plate 231 is threadedly connected to the outer surface of the second bidirectional screw 224. The bottom of the displacement plate 231 is fixedly connected to the first sleeve 232, the first sleeve 232 is movably connected to the first inner slide rod 233 inside, the displacement plate 231 is rotatably connected to the first lifting screw 234 inside, the outer surface of the first lifting screw 234 is connected to the internal thread of the first inner slide rod 233, the pressure wheel 240 is rotatably connected to the bottom end of the first inner slide rod 233, the displacement assembly 230 also includes a first pinion 235 fixedly connected to the top of the first lifting screw 234, the top of the displacement plate 231 is rotatably connected to the large gear 236, the outer surface of the large gear 236 is meshed with the outer surface of the first pinion 235, the top of the large gear 236 is fixedly connected to the second pinion 237, the outer surface of the second pinion 237 is meshed with the outer surface of the rack 250, the connecting assembly 260 includes a fixed connection A fixed plate 261 is connected to the rear end face of the inner wall of the main frame 110, and the internal rotation connection of the fixed plate 261 is an inner rotating column 262. A slot 268 is provided at one end of the second bidirectional screw 224, and a block 263 is movably connected to the internal part of the slot 268. The block 263 is fixedly connected to one end of the inner rotating column 262. The connecting assembly 260 also includes a long rod 264 rotatably connected to the rear end face of the main frame 110, and one end of the long rod 264 and the outer surface of the output shaft of the drive motor 214 are fixedly connected to a transmission roller 265, and a transmission belt 266 is transmission-connected between the outer surfaces of the two transmission rollers 265. The other end of the long rod 264 and the other end of the inner rotating column 262 are fixedly connected to a bevel gear 267, and the outer surfaces of the two bevel gears 267 are meshed with each other.

[0040] Turn on the drive motor 214, the drive motor 214 will drive the first bidirectional screw 212 to rotate, the first bidirectional screw 212 will drive the two movable circular plates 213 to move closer to each other, drive the two sets of right-angled triangular plates 270 to interlock with each other, so that the circumference of the middle part of the two sets of right-angled triangular plates 270 interlocking gradually increases. At the same time, the transmission belt 266 drives the long rod 264, and the long rod 264 drives the inner rotating column 262 through the engagement of the two bevel gears 267. The inner rotating column 262 drives the second bidirectional screw 224 through the block 263, and the second bidirectional screw 224 drives the two displacement plates 23 1 moves in different directions, so that the two pressure wheels 240 will adjust the spacing according to the insertion of the two sets of right-angled triangles 270. At the same time, the second small gear 237 is driven by the rack 250, so that the large gear 236 drives the first small gear 235 to drive the first lifting screw 234 to rotate, and the first lifting screw 234 drives the first inner slide bar 233 to adjust the height, thereby automatically adjusting the spacing and height of the pressure wheels 240 according to different bending conditions. The various components can cooperate with each other, and only the drive component 210 needs to be operated, so that the device can perform bending of different curvatures.

[0041] The pressing assembly 280 includes a fixed base 281 fixedly connected to the upper part of the main frame 110, the bottom of the fixed base 281 is fixedly connected to the second sleeve 282, the interior of the second sleeve 282 is movably connected to the second inner slide rod 283, the interior of the fixed base 281 is rotatably connected to the second lifting screw 284, the outer surface of the second lifting screw 284 is connected to the internal bolt of the second inner slide rod 283, the top of the second lifting screw 284 is fixedly connected to the steering wheel 285, and the bottom end of the second inner slide rod 283 is provided with a pressing groove.

[0042] The airflow tube that needs to be operated is placed in the middle of the two sets of right-angled triangles 270 and between the two pressure wheels 240. Rotate the second lifting screw 284, and the second lifting screw 284 will drive the second inner slide bar 283 to descend, and the second inner slide bar 283 will press and fix the airflow tube.

[0043] The heating component 290 includes a mounting rod 291 fixedly connected to the outer surface of the second inner slide rod 283, one end of the mounting rod 291 is fixedly connected to an air pipe 292, the outer surface of the air pipe 292 is fixedly connected to a plurality of nozzles 293, one end of the air pipe 292 is fixedly connected to a connecting hose, the heating component 290 also includes a bellows 294 fixedly connected to the outer surface of the fixing seat 281, the hose is connected to the bellows 294, the outer surface of the bellows 294 is fixedly connected to a fan 295, and a plurality of heating wires 296 are installed inside the bellows 294.

[0044] Turn on the fan 295 and the heating wire 296. The fan 295 will supply air to the inside of the second lifting screw 284. The air is heated by the heating wire 296 and enters the hose. Subsequently, the air enters the air pipe 292 and is ejected through multiple nozzles 293. The hot air will heat the pipe and improve the subsequent bending effect.

[0045] The implementation principle of the embodiment of the present invention is as follows: when in use, the airflow tube that needs to be operated is placed in the middle of the two sets of right-angled triangles 270 and is located between the two pressure wheels 240. The second lifting screw 284 is rotated, and the second lifting screw 284 will drive the second inner slide bar 283 to descend. The second inner slide bar 283 will press and fix the airflow tube. After fixing, turn on the fan 295 and the heating wire 296. The fan 295 will supply air to the inside of the second lifting screw 284. The air is heated by the heating wire 296 and enters the hose. Subsequently, the air enters the air pipe 292 and is ejected through multiple nozzles 293. The hot air will The heating of the pipe can be realized, and the pipe can be locally heated during the bending process, thereby significantly reducing the difficulty of bending hard materials (such as stainless steel, aluminum alloy), and at the same time reducing the material stress, cracks or rebound problems caused by cold bending, thereby improving the effect of subsequent bending. The cylinder 221 is turned on to drive the two lifting plates 222 to descend, so that the displacement component 230 and the pressure wheel 240 descend. At this time, the block 263 is separated from the slot 268, so that the two pressure wheels 240 press the air flow tube, and the air flow tube will fit into the middle of the two sets of right-angled triangles 270, thereby bending the air flow tube. After bending, the cylinder 221 drives the pressure wheel 240 to lift up again, and the block 263 is reconnected with the card slot 268. When the bending curvature needs to be adjusted, the staff turns on the drive motor 214, and the drive motor 214 will drive the first bidirectional screw 212 to rotate. The first bidirectional screw 212 will drive the two movable circular plates 213 to move closer to each other, driving the two sets of right-angled triangular plates 270 to engage with each other, so that the circumference of the middle part of the two sets of right-angled triangular plates 270 is gradually increased. At the same time, the transmission belt 266 drives the long rod 264, and the long rod 264 drives the inner rotating column 262 through the engagement of the two bevel gears 267. The inner rotating column 262 drives the second bidirectional screw 224 through the block 263, and the second bidirectional screw 22 The two displacement plates 231 are driven to move in different directions, so that the spacing between the two pressure wheels 240 is adjusted according to the insertion of the two sets of right-angled triangle plates 270. At the same time, the second small gear 237 is driven by the rack 250, so that the large gear 236 drives the first small gear 235 to drive the first lifting screw 234 to rotate. The first lifting screw 234 drives the first inner slide bar 233 to adjust the height, thereby automatically adjusting the spacing and height of the pressure wheels 240 according to different bending conditions. The various components can cooperate with each other, and only the driving assembly 210 needs to be operated, so that the device can perform bending of different curvatures, and the overall operation is more convenient.

[0046] 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, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A bending device for an automobile airflow pipe, comprising a main body module (100) and an adjustment and adaptation module (200), characterized in that: The main body module (100) comprises a main body frame (110), and a support frame (120) is connected to the main body frame (110); The adjustment and adaptation module (200) comprises a driving assembly (210) arranged between a main frame (110) and a support frame (120); a plurality of right-angled triangles (270) are connected to the driving assembly (210); the plurality of right-angled triangles (270) are evenly divided into two groups; the two groups of right-angled triangles (270) are symmetrically arranged, and the two groups of right-angled triangles (270) are staggered in an annular manner; a lifting assembly (220) is provided on the rear end face of the main frame (110); a rack (250) and two displacement assemblies (230) are provided on the lifting assembly (220) The two displacement assemblies (230) are both connected to the rack (250), and the two displacement assemblies (230) are both rotatably connected to a pressure wheel (240). A connecting assembly (260) is provided between the rear end surface of the main frame (110) and the driving assembly (210), and the connecting assembly (260) is connected to the lifting assembly (220). A pressing assembly (280) is fixedly connected to the upper part of the main frame (110), and the pressing assembly (280) is located between the two groups of right-angled triangles (270). Two heating assemblies (290) are provided on the pressing assembly (280); The lifting assembly (220) includes two lifting slots, both of which are opened on the rear end surface of the main frame (110); a cylinder (221) is installed inside the two lifting slots; a lifting plate (222) is slidably connected inside the two lifting slots; the bottoms of the two lifting plates (222) are fixedly connected to the output shafts of the two cylinders (221), respectively; a limiting rod (223) is fixedly connected between the two lifting plates (222); a second bidirectional screw (224) is rotatably connected between the two lifting plates (222); and the rack (250) is fixedly connected between the two lifting plates (222); The displacement assembly (230) includes a displacement plate (231) slidably connected to the outer surface of the limiting rod (223), the interior of the displacement plate (231) is threadedly connected to the outer surface of the second bidirectional screw (224), the bottom of the displacement plate (231) is fixedly connected to a first sleeve (232), the interior of the first sleeve (232) is movably connected to a first inner slide rod (233), the interior of the displacement plate (231) is rotatably connected to a first lifting screw (234), the outer surface of the first lifting screw (234) is threadedly connected to the inner thread of the first inner slide rod (233), and the outer surface of the first lifting screw (234) is threadedly connected to the inner thread of the first inner slide rod (233). The pressure wheel (240) is rotatably connected to the bottom end of the first inner slide rod (233); the displacement assembly (230) further includes a first pinion (235) fixedly connected to the top end of the first lifting screw (234); the top of the displacement plate (231) is rotatably connected to a large gear (236); the outer surface of the large gear (236) is meshed with the outer surface of the first pinion (235); the top of the large gear (236) is fixedly connected to a second pinion (237); the outer surface of the second pinion (237) is meshed with the outer surface of the rack (250).

2. The bending device for automobile airflow pipe according to claim 1, characterized in that: The driving assembly (210) includes a fixed tube (211) fixedly connected between the rear end face of the main frame (110) and the support frame (120); a first bidirectional screw rod (212) is rotatably connected between the rear end face of the main frame (110) and the support frame (120); the first bidirectional screw rod (212) is located inside the fixed tube (211); two movable grooves are provided on the outer surface of the fixed tube (211); two movable circular plates (213) are slidably connected between the insides of the two movable grooves; the two movable circular plates (213) are both threadedly connected to the first bidirectional screw rod (212); two groups of right-angled triangle plates (270) are respectively fixedly connected to adjacent sides of the two movable circular plates (213); a driving motor (214) is fixedly connected to the rear end face of the main frame (110); an output shaft of the driving motor (214) is fixedly connected to one end of the first bidirectional screw rod (212).

3. The bending device for automobile airflow pipe according to claim 1, characterized in that: The connecting assembly (260) includes a fixed plate (261) fixedly connected to the rear end face of the inner wall of the main frame (110), the internal rotation connection of the fixed plate (261) is an inner rotating column (262), one end of the second bidirectional screw (224) is provided with a slot (268), the internal movably connection of the slot (268) is a block (263), and the block (263) is fixedly connected to one end of the inner rotating column (262).

4. The bending device for automobile airflow pipe according to claim 1, characterized in that: The connecting assembly (260) further includes a long rod (264) rotatably connected to the rear end surface of the main frame (110), one end of the long rod (264) and the outer surface of the output shaft of the drive motor (214) are both fixedly connected to a transmission roller (265), the outer surfaces of the two transmission rollers (265) are connected in a transmission belt (266), and the other end of the long rod (264) and the other end of the inner rotating column (262) are both fixedly connected to a bevel gear (267), and the outer surfaces of the two bevel gears (267) are meshed with each other.

5. The bending device for automobile airflow pipe according to claim 1, characterized in that: The pressing assembly (280) includes a fixing seat (281) fixedly connected to the upper part of the main frame (110), the bottom of the fixing seat (281) is fixedly connected to a second sleeve (282), the interior of the second sleeve (282) is movably connected to a second inner slide rod (283), the interior of the fixing seat (281) is rotatably connected to a second lifting screw rod (284), the outer surface of the second lifting screw rod (284) is connected to the internal bolt of the second inner slide rod (283), the top end of the second lifting screw rod (284) is fixedly connected to a steering wheel (285), and the bottom end of the second inner slide rod (283) is provided with a pressing groove.

6. The bending device for automobile airflow pipe according to claim 1, characterized in that: The heating assembly (290) includes a mounting rod (291) fixedly connected to the outer surface of the second inner sliding rod (283), one end of the mounting rod (291) is fixedly connected to an air pipe (292), the outer surface of the air pipe (292) is fixedly connected to a plurality of nozzles (293), and one end of the air pipe (292) is fixedly connected to a hose.

7. The bending device for automobile airflow pipe according to claim 6, characterized in that: The heating assembly (290) further comprises a bellows (294) fixedly connected to the outer surface of the fixing seat (281), the hose is connected to the bellows (294), a fan (295) is fixedly connected to the outer surface of the bellows (294), and a plurality of heating wires (296) are installed inside the bellows (294).

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