A bending and forming device and method for a "day" shaped cross-section profile

Abstract

The present invention relates to the technical field of profile bending forming, and specifically to a bending forming device and method for a profile with a "day" - shaped cross - section. The forming device performs bending forming on the profile. The forming device includes a support mechanism, a bending mechanism, a driving mechanism, and a ventilation cooling mechanism. The support mechanism is connected to the bending mechanism, the support mechanism is connected to the driving mechanism, the bending mechanism performs bending forming on the profile, the bending mechanism is connected to the driving mechanism, and the bending mechanism is connected to the ventilation cooling mechanism. The support mechanism includes a workbench, a fixing plate, and a bending support plate. The fixing plate is fixedly connected to the workbench, the bending support plate is fixedly connected to the workbench, the fixing plate is fixedly connected to the bending support plate, the fixing plate is higher than the bending support plate. A chute is provided on the bending support plate, the chute is arc - shaped, and the chute is slidably connected to the driving mechanism. The fixing plate is connected to the bending mechanism, and the bending support plate is connected to the driving mechanism.

Description

Technical Field

[0001] The present invention relates to the technical field of profile bending forming, and particularly to a bending forming device and method for a "day"-shaped cross-section profile. Background Art

[0002] The commercial vehicle bumper parts play an important role in providing safety protection for the vehicle.

[0003] The results of the safety simulation of commercial vehicle bumpers show that the bumper is very important for the safety of commercial vehicles. At present, the United States has put forward relatively high standard requirements for commercial vehicle bumpers. In order to meet these requirements, the commonly used materials in our country are mainly high-strength steel, and its forming method is mainly roll bending into different cross-section profiles. According to the requirements of commercial vehicle bumpers, it is cut to a fixed length, and the cut pieces are then bent at both ends. Due to the hollow complex cross-section, thin wall, during the bending forming process, problems such as thinning of the outer wall, even cracking, wrinkling of the inner wall, and severe cross-section distortion often occur, which greatly affects the product quality and production efficiency.

[0004] In order to solve the above problems, the rigid block internal support form is often used at home and abroad. However, due to the rigid block internal support, the internal support stiffness cannot be controlled, so the above problems of outer wall fracture, inner wall wrinkling, and severe cross-section distortion have not been well solved. At present, there is still no research and development report on the profile magnetorheological elastomer internal support bending forming manufacturing technology at home and abroad. Summary of the Invention

[0005] The purpose of the present invention is to provide a bending forming device and method for a "day"-shaped cross-section profile to solve the problems mentioned in the above background art. [[ID=二十一]]

[0006] [[ID=二十二]]To solve the above technical problems, the present invention provides the following technical solution: a bending forming device and method for a "day"-shaped cross-section profile. [[ID=二十三]] [[ID=二十四]]

[0007] [[ID=二十五]]A bending forming device for a "day"-shaped cross-section profile, the forming device performs bending forming on the profile. The forming device includes a support mechanism, a bending mechanism, a driving mechanism, and a ventilation cooling mechanism. The support mechanism is connected to the bending mechanism, the support mechanism is connected to the driving mechanism, the bending mechanism performs bending forming on the profile, the bending mechanism is connected to the driving mechanism, and the bending mechanism is connected to the ventilation cooling mechanism. [[ID=二十六]] [[ID=二十七]]

[0008] [[ID=二十八]]In the forming device, the support mechanism supports the bending mechanism and the driving mechanism. The bending mechanism generates an adjustable magnetic field through a magnetic induction coil, rollers, and a rolling oil cylinder to perform bending forming on the profile. The driving mechanism drives the rotating housing to rotate through a hydraulic cylinder. The ventilation cooling mechanism is installed on the bending die and is used for performing ventilation cooling operations on the bent part of the profile. [[ID=二十九]] [[ID=三十]]

[0009] Furthermore, the support mechanism includes a worktable, a fixed plate, and a bending support plate. The fixed plate is fastened to the worktable, the bending support plate is fastened to the worktable, and the fixed plate is fastened to the bending support plate. The fixed plate is higher than the bending support plate. The bending support plate is provided with a sliding groove. The sliding groove is arc-shaped and is slidably connected to the drive mechanism. The curvature of the sliding groove on the bending support plate is consistent with the curvature of the bending die. The fixed plate is connected to the bending mechanism, and the bending support plate is connected to the drive mechanism.

[0010] In the support mechanism, the entire forming device is installed on the workbench. The fixed plate is fastened to the workbench, and the fixed plate is fastened to the fixed clamp for fixing the bending mold. The bending support plate is connected to the drive mechanism. At the same time, the bending support plate is provided with a slide groove, which allows the rotating housing to rotate along the slide groove direction under the action of the drive mechanism.

[0011] Furthermore, the bending mechanism includes ropes, a magnetorheological elastomer mandrel, a rotating housing, fixing clamps, bending stops, a bending cylinder, magnetic induction coils, rollers, and a bending die. Two ropes are provided, both penetrating the profile. The magnetorheological elastomer mandrel is sleeved on the outside of the ropes. At least two fixing clamps are provided, securely connected to a fixing plate, fixing the profile. The fixing clamps are openable. The bending die is securely connected to the fixing clamps, and the inner wall of the bending die is connected to the profile. Two magnetic induction coils are provided, positioned facing each other on the inner wall of the rotating housing. The rollers are connected to the magnetic induction coils for bending. The stop includes an end stop and a magnetorheological elastomer stop. There are two end stops, which are connected to the profile and located at the end of the profile. The end stops are connected to a rope. There are also two magnetorheological elastomer stops. The end of the rope away from the end stop is connected to the magnetorheological elastomer stop. The bending cylinder includes a rolling cylinder and a tensioning cylinder. The rolling cylinder is connected to the outer wall of the rotating housing and is fastened to the magnetic induction coil. The tensioning cylinder and the rope near the end of the magnetorheological elastomer stop are hinged through a baffle. The rotating housing is connected to the drive mechanism, and the bending die is connected to the ventilation and cooling mechanism.

[0012] In the bending mechanism, one end of the rope is connected to the end stop, and the other end is connected to the tensioning cylinder. Its main function is to tighten the magnetorheological elastomer block during the bending process, preventing it from loosening due to external forces and allowing the tensioning cylinder to operate normally. The magnetorheological elastomer mandrel facilitates the connection of the magnetorheological block. The rotating housing drives the rollers, rolling cylinder, and magnetic induction coil to rotate together, causing the rollers to apply deformation force to the profile and maintaining the electromagnetic field of the magnetic induction coil acting on the magnetorheological elastomer. The magnetorheological elastomer uses carbonyl iron powder with an average particle size of 5.0 μm as the magnetic particles, and its compaction density is 7.80 g / cm³. The fixing clamp is used to fix the bending die and the profile, ensuring that the non-bending part of the blank does not rotate during processing, thus maintaining the processing stability. In the process of machining precision, the end stop is used to prevent the block from falling off. The magnetorheological elastomer stop is set at the front of the profile and is mainly used to stop the magnetorheological elastomer block inside the blank from being fixed under the action of rope tension. The magnetorheological elastomer inside the profile is one of the smart materials that have been widely used in recent years. It can solve the problems of magnetic particles in fluids being difficult to seal, easy to settle, polluting the environment and having poor overall stability. It is used to assist the internal support for bending and forming. Its principle is to use the magnetorheological elastomer to control its elastic stiffness under the action of magnetic field, support the internal cavity of the blank, and prevent the outer wall from thinning, cracking, inner wall from wrinkling and severe cross-sectional distortion during the bending and forming process. It achieves the purpose of improving the processing quality of the profile bending and forming products. The bending die is used to control the bending curvature of the bending and forming parts.

[0013] Furthermore, the drive mechanism includes a support slider and a hydraulic cylinder. The support slider and the rotating housing are fastened together. The support slider and the bending support plate are connected by a slide groove. The hydraulic cylinder and the support slider are fastened together. The end of the hydraulic cylinder away from the support slider is hinged to the fixed plate.

[0014] In the drive mechanism, the rotating housing and the support slider are connected, and the hydraulic cylinder and the support slider are fastened together. After the hydraulic cylinder is started, the support slider can move along the direction of the slide along the slide. The curvature of the slide is consistent with the curvature of the bending die, which makes it easy for the rotating housing to rotate and make the profile bend and form.

[0015] Furthermore, the ventilation and cooling mechanism includes an air compressor and a ventilation duct. The air compressor and the bending die are fastened together, and the ventilation duct is connected to the air compressor. The end of the ventilation duct away from the air compressor leads into the bending die.

[0016] In the ventilation and cooling mechanism, an air compressor is installed on the bending die, and an air duct is connected to the bending die. After the machine is turned on, the air compressor introduces air through the air duct to ventilate and cool the bending part of the profile that is being bent. When the profile is bent, the outer wall of the profile and the inner wall of the bending die are in contact, the air compressor can no longer introduce air, and the rotating housing is controlled to stop rotating.

[0017] A forming method for a bending forming device of a profile with a "day" - shaped cross - section, the method comprising the following steps:

[0018] (1) Place the profile into the bending die and fix it on the workbench through a fixing clamp;

[0019] (2) The driving mechanism uses a hydraulic cylinder and a supporting slider to push the rotating shell to rotate, and the bending mechanism uses a magnetic induction coil to generate an adjustable magnetic field, and performs bending forming on the profile with a complex cross - section in the adjustable magnetic field environment;

[0020] (3) The ventilation and cooling mechanism uses an air compressor to ventilate and cool the bent part of the profile.

[0021] The present invention performs bending forming on the profile in an adjustable magnetic field environment. By utilizing the different performances of the magnetorheological elastomer under different magnetic field loading intensities, the stiffness of the magnetorheological elastomer is precisely controlled, so as to realize the bending forming of the inner support block under different stiffness conditions. At the same time, the ventilation and cooling mechanism is used to ventilate and cool the bending forming part.

[0022] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: After the present invention is started, the bending mechanism is started, the magnetic induction coil is powered on to generate a magnetic field, and the generated magnetic field acts on the magnetorheological elastomer. By using different magnetic field intensities or different magnetic particle concentrations, the stiffness of the magnetorheological elastomer is controlled to achieve different forming effects. Also, the mechanical properties of the adjustable stiffness of the magnetorheological elastomer are adjusted by using different magnetic field loading intensities or different magnetic particle concentrations. It can solve, within a large range, the technical problems such as thinning, or even cracking, of the outer side wall of the bent arc section of the profile formed by bending the profile using a traditional inner support, wrinkling of the inner side wall, and serious cross - section distortion. It can improve the quality of profile bending forming. At the same time, the driving mechanism is used to drive the rotating shell,带动 the roller, the rolling oil cylinder, and the magnetic induction coil to perform a rotating motion, providing a bending torque for the profile. During the profile bending process, the ventilation and cooling mechanism on the bending die is also started to perform ventilation and cooling treatment on the bending part. As the profile bending operation progresses, the distance between the profile and the bending die gradually approaches. After the profile bending forming is completed, the profile and the bending die are closely fitted. At this time, the air compressor cannot transmit air between the profile and the bending die, and the air compressor stops working. The entire bending mechanism stops working, and the driving mechanism drives the bending mechanism back to the initial position, and the operator can remove the bent profile. At this time, the bending forming operation of one profile is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a front view of the overall structure of the present invention;

[0025] Figure 2 yes Figure 1 A magnified view of a portion of the view;

[0026] Figure 3 This is a schematic diagram of the rear structure of the overall structure of the present invention;

[0027] Figure 4 yes Figure 3 A partial zoom-in view (B) of the view;

[0028] Figure 5 This is a schematic diagram of the bending mechanism structure of the present invention;

[0029] Figure 6 This is a schematic diagram of the drive mechanism structure of the present invention;

[0030] Figure 7 This is a side view of the bending mechanism of the present invention;

[0031] In the diagram: 1. Profile; 2. Support mechanism; 21. Workbench; 22. Fixing plate; 23. Bending support plate; 3. Bending mechanism; 31. Rope; 32. Magnetorheological elastomer mandrel; 33. Rotating shell; 34. Fixing clamp; 35. Bending stop; 351. End stop; 352. Magnetorheological elastomer stop; 36. Bending cylinder; 361. Rolling cylinder; 362. Tensioning cylinder; 37. Magnetic induction coil; 38. Roller; 39. Bending die; 4. Drive mechanism; 41. Support slider; 42. Hydraulic cylinder; 5. Ventilation and cooling mechanism; 51. Air compressor; 52. Ventilation duct. Detailed Implementation

[0032] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] Please see Figure 1-7 The present invention provides the following technical solution:

[0034] A bending forming device for a "day" - shaped cross - section profile. The forming device performs bending forming on the profile 1. The forming device includes a support mechanism 2, a bending mechanism 3, a driving mechanism 4, and a ventilation and cooling mechanism 5. The support mechanism 2 is connected to the bending mechanism 3, the support mechanism 2 is connected to the driving mechanism 4. The bending mechanism 3 performs bending forming on the profile 1. The bending mechanism 3 is connected to the driving mechanism 4, and the bending mechanism 3 is connected to the ventilation and cooling mechanism 5.

[0035] In the forming device, the support mechanism 2 supports the bending mechanism 3 and the driving mechanism 4. The bending mechanism 3 generates an adjustable magnetic field through a magnetic induction coil 37, rollers 38, and a rolling cylinder 361 to perform bending forming on the profile 1. The driving mechanism 4 drives the rotating housing 33 to rotate through a hydraulic cylinder 42. The ventilation and cooling mechanism 5 is installed on the bending die 39 for performing ventilation and cooling operations on the bent part of the profile 1.

[0036] The support mechanism 2 includes a workbench 21, a fixing plate 22, and a bending support plate 23. The fixing plate 22 is fixedly connected to the workbench 21, the bending support plate 23 is fixedly connected to the workbench 21, the fixing plate 22 is fixedly connected to the bending support plate 23. The fixing plate 22 is higher than the bending support plate 23. The bending support plate 23 is provided with a chute, and the chute is arc - shaped. The chute is slidably connected to the driving mechanism 4. The bending curvature of the chute on the bending support plate 23 is the same as the bending curvature of the bending die 39. The fixing plate 22 is connected to the bending mechanism 3, and the bending support plate 23 is connected to the driving mechanism 4.

[0037] In the support mechanism 2, the entire forming device is installed on the workbench 21. The fixing plate 22 is fixedly connected to the workbench 21, and a fixing clamp 34 is fixedly connected to the fixing plate 22 for fixing the bending die 39. The bending support plate 23 is connected to the driving mechanism 4. At the same time, the bending support plate 23 is provided with a chute, and the rotating housing 33 can rotate along the direction of the chute under the action of the driving mechanism 4.

[0038] The bending mechanism 3 includes a rope 31, a magnetorheological elastomer mandrel 32, a rotating housing 33, a fixing clamp 34, a bending stop 35, a bending cylinder 36, a magnetic induction coil 37, a roller 38, and a bending die 39. Two ropes 31 are provided, each penetrating the profile 1. The magnetorheological elastomer mandrel 32 is sleeved on the outside of the ropes 31. At least two fixing clamps 34 are provided, each fastened to a fixing plate 22, fixing the profile 1. The fixing clamps 34 are openable. The bending die 39 is fastened to the fixing clamps 34, and its inner wall is connected to the profile 1. Two magnetic induction coils 37 are provided, positioned on opposite sides of the inner wall of the rotating housing 33. The roller 38 is connected to the magnetic induction coils 37. The bending stop 35 includes an end... The device includes an end stop 351 and a magnetorheological elastomer stop 352. Two end stops 351 are provided, connected to the profile 1 and located at the end of the profile 1. The end stops 351 are connected to a rope 31. Two magnetorheological elastomer stops 352 are provided. The end of the rope 31 furthest from the end stops 351 is connected to the magnetorheological elastomer stop 352. The bending cylinder 36 includes a rolling cylinder 361 and a tensioning cylinder 362. The rolling cylinder 361 is connected to the outer wall of the rotating housing 33. The rolling cylinder 361 is fastened to a magnetic induction coil 37. The tensioning cylinder 362 and the rope 31 near the end of the magnetorheological elastomer stop 352 are hinged together by a baffle. The rotating housing 33 is connected to the drive mechanism 4, and the bending die 39 is connected to the ventilation and cooling mechanism 5.

[0039] In the bending mechanism 3, one end of the rope 31 is connected to the end stop 351, and the other end is connected to the tensioning cylinder 362. Its main function is to tighten the magnetorheological elastomer block during the bending forming process to prevent it from loosening due to external force, and to allow the tensioning cylinder 362 to operate normally. The magnetorheological elastomer mandrel 32 is used to facilitate the connection of the magnetorheological block. The rotating housing 33 is used to drive the roller 38, the rolling cylinder 361, and the magnetic induction coil 37 to rotate together, so that the roller 38 applies a deformation force to the profile 1 and maintains the electromagnetic field of the magnetic induction coil 37 acting on the magnetorheological elastomer. The magnetorheological elastomer uses carbonyl iron powder with an average particle size of 5.0 μm as magnetic particles, and its compaction density is 7.80 g / cm3. The fixing clamp 34 is used to fix the bending die 39 and the profile 1, and to fix them to ensure that the non-bending part of the blank does not rotate during the processing. The end block 351 is used to prevent the block from falling off. The magnetorheological elastomer block 352 is set at the front of the profile 1. It is mainly used to keep the magnetorheological elastomer block in the blank fixed under the tension of the rope 31. The magnetorheological elastomer inside the profile 1 is one of the smart materials that have been widely used in recent years. It can solve the problems of magnetic particles in the fluid being difficult to seal, easy to settle, polluting the environment and having poor overall stability. It is used to assist the internal support for bending and forming. Its principle is to use the magnetorheological elastomer to control its elastic stiffness under the action of the magnetic field, support the internal cavity of the blank, and prevent the outer wall from thinning, cracking, inner wall from wrinkling and severe cross-sectional distortion during the bending and forming process. It achieves the purpose of improving the processing quality of the bending and forming product of the profile 1. The bending die 39 is used to control the bending curvature of the bending and forming part.

[0040] The drive mechanism 4 includes a support slider 41 and a hydraulic cylinder 42. The support slider 41 is fastened to the rotating housing 33. The support slider 41 and the bending support plate 23 are connected by a slide groove. The hydraulic cylinder 42 is fastened to the support slider 41. The end of the hydraulic cylinder 42 away from the support slider 41 is hinged to the fixed plate 22.

[0041] In the drive mechanism 4, the rotating housing 33 and the support slider 41 are connected, and the hydraulic cylinder 42 and the support slider 41 are fastened together. After the hydraulic cylinder 42 is started, the support slider 41 can move the rotating housing 33 along the direction of the slide groove. The curvature of the slide groove is consistent with the curvature of the bending die 39, which makes it easy for the rotating housing 33 to rotate so that the profile 1 can be bent and formed.

[0042] The ventilation and cooling mechanism 5 includes an air compressor 51 and an air duct 52. The air compressor 51 is fastened to the bending mold 39, the air duct 52 is connected to the air compressor 51, and the end of the air duct 52 away from the air compressor 51 is inserted into the bending mold 39.

[0043] In the ventilation and cooling mechanism 5, an air compressor 51 is arranged on the bending die 39, and a ventilation pipe 52 is connected into the bending die 39. After being turned on, the air compressor 51 passes air through the ventilation pipe 52 to conduct ventilation and cooling on the bending part of the profile 1 undergoing bending forming. When the bending forming of the profile 1 is completed, the outer wall of the profile 1 fits with the inner wall of the bending die 39, and the air compressor 51 cannot pass air, so the control rotates the housing 33 to stop rotating.

[0044] A forming method for a bending forming device of a "day" - shaped cross - section profile, the method comprising the following steps:

[0045] (1) Place the profile 1 into the bending die 39 and fix it on the workbench 21 through the fixing clamp 34;

[0046] (2) The driving mechanism 4 uses the hydraulic cylinder 42 and the support slider 41 to push the rotating housing 33 to rotate. The bending mechanism 3 uses the magnetic induction coil 37 to generate an adjustable magnetic field, and performs bending forming on the complex - cross - section profile under the adjustable magnetic field environment;

[0047] (3) The ventilation and cooling mechanism 5 uses the air compressor 51 to conduct ventilation and cooling on the bending part of the profile 1.

[0048] The present invention performs bending forming on the profile 1 under an adjustable magnetic field environment. By utilizing the different performances of the magnetorheological elastomer under different magnetic field loading intensities, the stiffness of the magnetorheological elastomer is precisely controlled to achieve bending forming of the inner support block under different stiffness conditions. At the same time, the ventilation and cooling mechanism 5 is used to conduct ventilation and cooling on the bending forming part.

[0049] The working principle of this invention: After startup, the bending mechanism 3 is activated, and the magnetic induction coil 37 is energized to generate a magnetic field. The generated magnetic field acts on the magnetorheological elastomer. By using different magnetic field strengths or different magnetic particle concentrations, the stiffness of the magnetorheological elastomer can be controlled to achieve different forming effects. Furthermore, by using different magnetic field loading intensities or different magnetic particle concentrations, the mechanical properties of the adjustable stiffness of the magnetorheological elastomer can be adjusted. This can largely solve technical problems such as thinning or even cracking of the outer wall of the bending arc segment of the profile 1 when using traditional internal supports, wrinkling of the inner wall, and severe cross-sectional distortion, thus improving the quality of the profile 1 bending. Simultaneously, the driving mechanism 4 drives the rotating shell 33, bringing... The rotating roller 38, the rolling cylinder 361, and the magnetic induction coil 37 provide bending torque for the profile 1. During the bending process of the profile 1, the ventilation and cooling mechanism 5 on the bending die 39 is also activated to ventilate and cool the bending part. As the bending operation of the profile 1 proceeds, the distance between the profile 1 and the bending die 39 gradually approaches. After the profile 1 is bent and formed, the profile 1 and the bending die 39 are tightly fitted. At this time, the air compressor 51 cannot deliver air between the profile 1 and the bending die 39, so the air compressor 51 stops working, and the entire bending mechanism 3 stops working. The drive mechanism 4 drives the bending mechanism 3 back to the initial position, and the bent profile 1 can be removed manually. At this time, the bending and forming operation of one profile is completed.

[0050] Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. A bending forming device of a "day" type cross-section profile, which forms a bending of a profile (1), characterized in that: The forming device includes a support mechanism (2), a bending mechanism (3), a drive mechanism (4), and a ventilation and cooling mechanism (5). The support mechanism (2) and the bending mechanism (3) are connected. The support mechanism (2) and the drive mechanism (4) are connected. The bending mechanism (3) bends the profile (1) to form it. The bending mechanism (3) and the drive mechanism (4) are connected. The bending mechanism (3) and the ventilation and cooling mechanism (5) are connected. The support mechanism (2) includes a workbench (21), a fixed plate (22), and a bending support plate (23). The fixed plate (22) is fastened to the workbench (21), the bending support plate (23) is fastened to the workbench (21), the fixed plate (22) and the bending support plate (23) are fastened to each other, the fixed plate (22) is higher than the bending support plate (23), the bending support plate (23) is provided with a sliding groove, the sliding groove is arc-shaped, the sliding groove is slidably connected to the drive mechanism (4), the fixed plate (22) is connected to the bending mechanism (3), and the bending support plate (23) is connected to the drive mechanism (4). The bending mechanism (3) includes a rope (31), a magnetorheological elastomer mandrel (32), a rotating shell (33), a fixing clamp (34), a bending stop (35), a bending cylinder (36), a magnetic induction coil (37), a roller (38), and a bending mold (39). There are two ropes (31), and the two ropes (31) pass through the profile (1). The magnetorheological elastomer mandrel (32) is sleeved on the outside of the rope (31). There are at least two fixing clamps (34), and the fixing clamps (34) are fastened to the fixing plate (22). The bending mold (39) is fastened to the fixing clamps (34). The inner wall of the bending mold (39) is connected to the profile (1). There are two magnetic induction coils (37), and the two magnetic induction coils (37) are arranged on the facing surface of the inner wall of the rotating shell (33). The roller (38) is connected to the magnetic induction coils (37). The drive mechanism (4) includes a support slider (41) and a hydraulic cylinder (42). The support slider (41) and the rotating housing (33) are fastened together. The support slider (41) and the bending support plate (23) are slidably connected through a groove. The hydraulic cylinder (42) and the support slider (41) are fastened together. The end of the hydraulic cylinder (42) away from the support slider (41) is hinged to the fixed plate (22).

2. A bending around forming device of a "day" type cross-section profile according to claim 1, characterized in that: The bending stop (35) includes an end stop (351) and a magnetorheological elastomer stop (352). There are two end stops (351). The end stops (351) are connected to the profile (1) and are located at the end of the profile (1). The end stops (351) are connected to the rope (31). There are two magnetorheological elastomer stops (352). The end of the rope (31) away from the end stops (351) is connected to the magnetorheological elastomer stops (352). The bending cylinder (36) is connected to a rolling cylinder (361) and a tensioning cylinder (362). The rolling cylinder (361) is connected to the outer wall of the rotating housing (33). The rolling cylinder (361) is fastened to the magnetic induction coil (37). The tensioning cylinder (362) and the rope (31) near the end of the magnetorheological elastomer stop (352) are hinged by a baffle. The rotating housing (33) is connected to the drive mechanism (4). The bending mold (39) is connected to the ventilation and cooling mechanism (5).

3. A device for bending a "day" section profile according to claim 2, characterized in that: The ventilation and cooling mechanism (5) includes an air compressor (51) and a ventilation pipe (52). The air compressor (51) and the bending mold (39) are fastened together. The ventilation pipe (52) is connected to the air compressor (51). The end of the ventilation pipe (52) away from the air compressor (51) is inserted into the bending mold (39).

4. A bending around forming device of a "day" type cross-section profile according to claim 3, characterized in that: The curvature of the groove on the bending support plate (23) is the same as that of the bending mold (39). The fixing clamp (34) fixes the profile (1). The fixing clamp (34) is an openable structure.

5. A method of bending a "day" section profile according to claim 4, characterized in that: The method includes the following steps: (1) Profile (1) Loading and fixing; (2) Bending mechanism (3) bends the profile (1) into shape; (3) Ventilation and cooling mechanism (5) Ventilation and cooling of the bending part of the profile (1).

6. A method of bending a "day" shaped section according to claim 5, characterized in that: The method is specifically as follows: (1) Place the profile (1) into the bending die (39) and fix it on the worktable (21) by the fixing clamp (34); (2) The drive mechanism (4) uses a hydraulic cylinder (42) and a support slider (41) to push the rotating shell (33) to rotate. The bending mechanism (3) uses a magnetic induction coil (37) to generate an adjustable magnetic field, and performs bending forming of complex cross-section profiles in an adjustable magnetic field environment. (3) Ventilation and cooling mechanism (5) Uses air compressor (51) to ventilate and cool the bending part of profile (1).

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