A bending device for aluminum profiles and a working method thereof

Abstract

The application is suitable for the technical field of aluminum profile bending, and provides a bending device for aluminum profile and a working method thereof, which comprises a bending assembly for bending the aluminum profile, and an auxiliary assembly for supporting and lifting the aluminum profile to be bent. The auxiliary assembly comprises a base arranged on one side of the bending assembly and a swing plate hinged to the top of the base. The device solves the problem of poor bending precision caused by the dependence of the existing mechanism on manual operation and the deviation of the stripping plate in the bending of large-size aluminum profiles. The device is provided with a turning plate mechanism and a supporting plate mechanism, and the turning plate motor and the supporting plate motor are used to drive the first plate body and the second plate body to turn over, respectively. A continuous bidirectional conveying channel is formed by the conveying rollers penetrating through the plate bodies, and the position of the aluminum profile is corrected by the baffle. The effects of long-distance bidirectional conveying of the aluminum profile, smooth lifting and stripping after bending, and automatic turning of the profile are achieved.

Description

Technical Field

[0001] This invention relates to the field of aluminum profile bending technology, and more specifically, to a bending device for aluminum profiles and its working method. Background Technology

[0002] Aluminum profiles are used in many fields such as new energy equipment, rail transit, building curtain walls, and precision electronics. Bending is one of the core processes in the aluminum profile and deep processing of aluminum profiles. As the core CNC equipment for realizing the bending and forming of metal sheets, the bending machine can bend aluminum sheets into specific angles and contours according to process requirements through force control and stroke control. It is a key piece of equipment in the metal forming and processing industry chain.

[0003] Existing CNC bending machines for aluminum profile processing drive a hydraulic power unit to move the upper die downwards, which cooperates with the lower die fixed to the worktable to apply pressure to the aluminum profile placed in the lower die slot. This causes the sheet to undergo plastic deformation under the extrusion pressure of the upper and lower dies. However, in order to reduce the intensity of manual labor, a follow-up material-carrying device is set up next to the bending machine to support large-sized sheets throughout the process. During the bending process, the device lifts and follows the bending angle of the sheet synchronously, always supporting the sheet to prevent it from sagging and deforming due to its own weight. In addition, workers assist in supporting the edges of the sheet and use pressure plates to press and position the sheet, limiting the positional fluctuation of the sheet.

[0004] However, in the bending of large aluminum profiles, the positioning and lifting capabilities of existing mechanisms are still limited, requiring manual assistance from workers for positioning, which restricts further improvement in processing efficiency. Furthermore, after the bending process is completed, the sheet metal needs to be reset to a horizontal state by the follow-up material dragging equipment. During this process, the formed bent edge will come out of the V-groove of the lower die, and the bent edge needs to complete the upward lifting action. At this time, the pressure plate must release the clamping restriction on the sheet metal. The unrestrained sheet metal is very prone to positional displacement during the ejection and lifting process, which will not only destroy the completed bending accuracy, but also cause positioning errors in subsequent processes, significantly increasing the product defect rate and rework costs. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a bending device for aluminum profiles and its working method.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a bending device for aluminum profiles, comprising a bending assembly for bending aluminum profiles.

[0007] An auxiliary component is used to support and lift the aluminum profile to be bent. The auxiliary component includes a base disposed on one side of the bending component and a swing plate hinged to the top of the base. The top of the swing plate is embedded with a flipping mechanism and a support plate mechanism for supporting the plate. The support plate directions of the flipping mechanism and the support plate mechanism are opposite. A V-shaped support is located in the middle of the top surface of the swing plate.

[0008] The flipping mechanism includes a first plate body hinged to the top of the swing plate and located on one side of the V-shaped support. A baffle for correcting the angle of the aluminum profile is hinged to the side of the first plate body away from the V-shaped support. Multiple sets of first conveying rollers rotate on the top of the swing plate and below the first plate body. The first conveying rollers are arranged through the first plate body.

[0009] An adjustment plate assembly is used to adjust the angle of aluminum profiles.

[0010] The adjustment component is used to clamp and position aluminum profiles during the bending process, compensate for offset, compensate for sag, and correct angles.

[0011] The present invention is further configured such that: a flipping motor is installed on the top of the swing plate, and the output end of the flipping motor is connected to one side of the first plate.

[0012] The pallet mechanism includes a second plate hinged to the top of the swing plate. The hinge point between the second plate and the swing plate is located on the side of the V-shaped support away from the flipping mechanism. A pallet motor is installed on the top of the swing plate. The output end of the pallet motor is connected to the second plate. Multiple sets of second conveying rollers rotate on the top of the swing plate and below the second plate. The second conveying rollers are arranged through the second plate.

[0013] The present invention is further configured such that: the bending assembly includes a frame and a drive mechanism mounted on the top of the frame, the output end of the drive mechanism is connected to an upper die, a worktable is provided on one side of the frame, a lower die is mounted on the top of the worktable, and the upper die and the lower die are arranged opposite to each other.

[0014] The invention is further configured such that: a lifting cylinder is hinged to the top of the base, the piston rod end of the lifting cylinder is hinged to the bottom of the swing plate, a positioning post is installed on the top of the base, the positioning post is used to position and block the swing plate, and two extension rods are provided on one side of the swing plate, the ends of the two extension rods are connected to an extension plate.

[0015] The present invention is further configured such that: the adjustment plate assembly includes a support frame disposed on one side of the auxiliary assembly, the top of the support frame is provided with an electric turntable, and the electric turntable extends between two extension rods.

[0016] The invention is further configured such that: the adjustment components are configured in two sets, which are arranged opposite to each other; each set of adjustment components includes a telescopic cylinder installed on the top of the swing plate and located below the first plate; the piston rod end of the telescopic cylinder passes through the side of the swing plate and is connected to a U-shaped frame; two guide rods are symmetrically connected to the side wall of the U-shaped frame; the guide rods pass through the side of the swing plate and extend to the top of the swing plate; a bearing plate rotates inside the U-shaped frame; an adjusting motor is installed on one side of the U-shaped frame; the output end of the adjusting motor is connected to one side of the bearing plate; a guide rail is installed on the side wall of the bearing plate; two sets of adjustment mechanisms slide on the top of the guide rail; the adjustment mechanisms are used to adjust the angle when bending the aluminum profile.

[0017] The present invention is further configured such that: both sets of adjustment mechanisms include a sliding plate slidably connected to the corresponding guide rail and a positioning plate installed on the side wall of the sliding plate; a driving cylinder is installed on the side wall of the positioning plate; a hinge frame is connected to the piston rod end of the driving cylinder; connecting frames are hinged to both sides of the hinge frame; a sliding column is connected to the side of the connecting frame near the positioning plate; a sliding groove is opened on the side wall of the positioning plate; and the sliding column is inserted into the interior of the sliding groove.

[0018] The present invention is further configured such that: a first adjusting roller and a second adjusting roller are respectively rotatably mounted on the side walls of the two corresponding connecting frames, the first adjusting roller is located below the second adjusting roller, a first sleeve is connected to the outer side wall of the first adjusting roller, and a second sleeve is provided on the outer side wall of the second adjusting roller.

[0019] The present invention is further configured such that: a three-jaw chuck is installed at the end of the second adjusting roller, and three sets of jaws slide on the side wall of the three-jaw chuck, one of which is connected to the inner side wall of the second sleeve.

[0020] A bending method for aluminum profiles, using a bending device for aluminum profiles as described above, includes the following steps:

[0021] S1. Place the aluminum profile to be bent above the flipping mechanism. The flipping mechanism moves the part of the aluminum profile to be bent directly below the upper mold. Then, the aluminum profile is assisted in positioning, offset compensation and sag compensation through two sets of adjustment components.

[0022] S2. Subsequently, the upper die is driven to move down by the drive mechanism to extrude and bend the aluminum profile to be bent. At the same time, the auxiliary components lift and tilt the aluminum profile. After bending, the upper die is lifted, and then the flipping mechanism lifts the aluminum profile, causing the bent part of the aluminum profile to be lifted out of the lower die. The aluminum profile is sent out in the opposite direction due to the angle of the flipping mechanism and the conveying power. If a second bending is required, the flipping mechanism needs to adjust the angle. After that, the flipping mechanism continues to send the aluminum profile into the bending process.

[0023] S3. After completing the bending on one side, if it is necessary to switch the side of the aluminum profile, the flipping mechanism and the pallet mechanism can be used to move it back to the top of the electric turntable for rotation. After rotation, the pallet mechanism and the flipping mechanism are used again to transport it, and two sets of adjustment components are used to assist in the adjustment. Then, the bending operation is carried out through the upper die. If it is necessary to bend the side in the opposite direction, the aluminum profile is flipped through the flipping mechanism and the pallet mechanism, and the flipping mechanism and the adjustment components are used to assist in the adjustment. Then, the bending operation is carried out through the upper die.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] (1) By setting up a flipping mechanism and a pallet mechanism, the flipping motor and the pallet motor drive the first plate and the second plate to flip, respectively, and form a continuous bidirectional conveying channel with the conveying roller that passes through the plate. The position of the aluminum profile is corrected by the baffle, thus achieving the effect of long-distance bidirectional conveying of aluminum profile, smooth lifting and demolding after bending, and automatic flipping of profile.

[0026] (2) By setting up the adjustment component, the U-shaped frame is driven by the telescopic cylinder to achieve the clamping distance in the width direction. The bearing plate is swung by adjusting the motor to match the bending angle of the aluminum profile. Then, the adjusting roller in the adjustment mechanism clamps and limits the side of the profile, achieving the effect of synchronous centering, clamping and positioning, and auxiliary straightening during the bending process of the aluminum profile. This reduces the problem of lateral deviation of the profile during bending and adapts to the processing of aluminum profiles with different cross-sectional sizes and different bending positions, thus improving the versatility of the device.

[0027] (3) By setting a three-jaw chuck structure in the second adjusting roller, when the aluminum profile is demolded, the side is switched, and the face is flipped, the mode of the sleeve bottom support and double roller clamping and positioning is switched. At the same time, the clamping stroke and lifting height can be adapted to the aluminum profile with stepped notch, so as to achieve the automatic correction of aluminum profile after multiple processes, the self-weight sag compensation of large-size profile, and the adaptation effect of bending condition of profile with irregular cross section. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of a bending device for aluminum profiles according to the present invention.

[0029] Figure 2 for Figure 1 A side view structural diagram.

[0030] Figure 3 This is a schematic diagram of the auxiliary component structure in this invention.

[0031] Figure 4 for Figure 3 A partial structural diagram.

[0032] Figure 5 This is a schematic diagram of the adjustment component structure in this invention.

[0033] Figure 6 This is a schematic diagram of the adjustment mechanism in this invention.

[0034] Figure 7 for Figure 6 A side view structural diagram.

[0035] Figure 8 This is a schematic diagram of the cooperation structure between the second adjusting roller and the second sleeve in this invention.

[0036] Figure 9 This is a schematic diagram of the support points when the aluminum profile is bent on different sides in this invention.

[0037] Explanation of reference numerals in the attached drawings: 1. Bending assembly; 11. Frame; 12. Drive mechanism; 13. Upper die; 14. Worktable; 15. Lower die;

[0038] 2. Auxiliary components; 21. Base; 22. Swing plate; 23. Lifting cylinder; 24. Positioning column; 25. Extension rod; 26. Extension plate;

[0039] 27. Flipping mechanism; 271. First plate; 272. Baffle; 273. First conveying roller; 274. Flipping motor;

[0040] 28. Pallet mechanism; 281. Second pallet body; 282. Pallet motor; 283. Second conveyor roller;

[0041] 29. V-shaped support;

[0042] 3. Adjustment plate assembly; 31. Support frame; 32. Electric turntable;

[0043] 4. Adjustment assembly; 41. Telescopic cylinder; 42. Guide rod; 43. U-shaped frame; 44. Adjustment motor; 45. Support plate; 46. Guide rail;

[0044] 47. Adjustment mechanism; 471. Sliding plate; 472. Positioning plate; 473. Slide groove; 474. Sliding column; 475. Drive cylinder; 476. Hinge frame; 477. Connecting frame; 478. First adjusting roller; 479. First sleeve; 4701. Second adjusting roller; 4702. Second sleeve; 4703. Three-jaw chuck; 4704. Jaw. Detailed Implementation

[0045] 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.

[0046] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0047] Please see Figures 1-9 The present invention provides the following technical solutions:

[0048] Example 1: A bending device for aluminum profiles, including a bending assembly 1, which is used to bend the aluminum profile. The specific structure of the bending assembly 1 is as follows:

[0049] See Figure 1 The bending assembly 1 includes a frame 11 and a drive mechanism 12 mounted on the top of the frame 11. The output end of the drive mechanism 12 is connected to an upper die 13. A workbench 14 is provided on one side of the frame 11. A lower die 15 is mounted on the top of the workbench 14. The upper die 13 and the lower die 15 are arranged opposite to each other.

[0050] The drive mechanism 12 can be a downward pressure cylinder, which is not specifically limited here. The drive mechanism 12 adopts a vertical downward output method to provide vertical pressure for bending the aluminum profile. When the mold is closed, the bending edge of the upper mold 13 cooperates with the groove of the lower mold 15 to apply bending force to the aluminum profile to complete plastic deformation.

[0051] See Figure 1 and Figure 2 An auxiliary component 2 is provided on one side of the bending component 1. The auxiliary component 2 is used to support and lift the aluminum profile to be bent. The specific structure of the auxiliary component 2 is as follows:

[0052] See Figure 3 and Figure 4 The auxiliary component 2 includes a base 21 disposed on one side of the bending component 1 and a swing plate 22 hinged to the top of the base 21. The swing plate 22 is used to support and place the aluminum profile. A lifting cylinder 23 is hinged to the top of the base 21. The piston rod end of the lifting cylinder 23 is hinged to the bottom of the swing plate 22. By extending and retracting the piston rod of the lifting cylinder 23, the swing plate 22 is driven to swing up and down around the hinge point, thereby adjusting the angle of the aluminum profile. When the upper die 13 bends the aluminum profile, the swing plate 22 is used to lift the aluminum profile, realizing follow-up support during the bending process, matching the angle of the aluminum profile after bending, and avoiding additional stress deformation of the bent part of the aluminum profile.

[0053] See Figure 3 and Figure 4A positioning post 24 is installed on the top of the base 21. The positioning post 24 is used to position and block the swing plate 22. Two extension rods 25 are provided on one side of the swing plate 22. The ends of the two extension rods 25 are connected to extension plates 26. The positioning post 24 is fixed to the top of the base 21. When the swing plate 22 falls back to the horizontal state, the top of the positioning post 24 abuts against the bottom surface of the swing plate 22 to hard limit the swing plate 22 and ensure the horizontal posture of the swing plate 22. The extension rods 25 and the extension plates 26 are fixed on the side of the swing plate 22 away from the bending assembly 1, which can extend the support length of the plate 26 and provide stable end support for long aluminum profiles, preventing the tail of the long aluminum profile from drooping when it is transported.

[0054] See Figure 1 and Figure 2 An adjustment plate assembly 3 is provided on the side of the auxiliary component 2 away from the bending component 1. The adjustment plate assembly 3 is used to adjust the angle of the aluminum profile. The specific structure of the adjustment plate assembly 3 is as follows:

[0055] The adjustment plate assembly 3 includes a support frame 31 located on one side of the auxiliary assembly 2. An electric turntable 32 is located on the top of the support frame 31. The electric turntable 32 extends between two extension rods 25. A rotating roller is located on the top of the electric turntable 32. When the aluminum profile is transported to this position in the reverse direction, the table surface of the electric turntable 32 supports the main body of the aluminum profile and can drive the aluminum profile to rotate, thereby realizing the adjustment of the circumferential angle of the aluminum profile and completing the switching of bending on different sides. The staff assists in lifting the side of the aluminum profile. After the adjustment is completed, the aluminum profile is transported by rotating the roller.

[0056] Specifically, the aluminum profile is placed on top of the swing plate 22, with the part of the aluminum profile to be bent extending below the upper mold 13. Then, the operator holds the side of the aluminum profile and controls the drive mechanism 12 to drive the upper mold 13 at its output end to move vertically downward and close with the lower mold 15 fixed on the top of the worktable 14 on the side of the frame 11. Through the bending edge of the upper mold 13 and the groove of the lower mold 15, a concentrated load is applied to the part of the aluminum profile to be bent, so that the aluminum profile undergoes controllable plastic deformation and completes the bending forming at the preset angle.

[0057] After completing one bend, the worker places the aluminum profile on the top of the electric turntable 32 and switches the side, and then places the part to be bent under the upper mold 13 again for bending.

[0058] In Example 2, in the scenario of bending large-size aluminum profiles, the positioning and lifting capabilities of the existing mechanism are still limited. It is still necessary for workers to manually assist in pressing and positioning the aluminum profile, which restricts the further improvement of processing efficiency. Moreover, after the bending process is completed, the sheet material needs to be reset to a horizontal state by following the follow-up material dragging equipment. During this process, the formed bent edge will be released from the groove of the lower die 15. The bent edge needs to complete the upward lifting action. At this time, the pressure plate must release the pressure restriction on the sheet material. The unrestrained sheet material is very prone to positional displacement during the release and lifting process, which will not only destroy the completed bending accuracy, but also cause positioning errors in subsequent processes, greatly increasing the product defect rate and rework costs.

[0059] Therefore, a flipping mechanism 27 and a pallet mechanism 28 for supporting the pallet are embedded in the top of the swing plate 22. The pallet directions of the flipping mechanism 27 and the pallet mechanism 28 are opposite. A V-shaped support 29 is located in the middle of the top surface of the swing plate 22. The flipping mechanism 27 and the pallet mechanism 28 can cooperate to realize bidirectional conveying, lifting and demolding of aluminum profiles, and flipping action. During this process, the V-shaped support 29 fills the gap between the flipping mechanism 27 and the pallet mechanism 28. The specific structures of the flipping mechanism 27 and the pallet mechanism 28 are as follows:

[0060] The flipping mechanism 27 includes a first plate 271 hinged to the top of the swing plate 22 and located on one side of the V-shaped support 29. A baffle 272 for correcting the angle of the aluminum profile is hinged to the side of the first plate 271 away from the V-shaped support 29. Multiple sets of first conveying rollers 273 rotate on the top of the swing plate 22 and below the first plate 271. The first conveying rollers 273 are arranged through the first plate 271. A flipping motor 274 is installed on the top of the swing plate 22. The output end of the flipping motor 274 is connected to one side of the first plate 271.

[0061] The flip motor 274 is coaxially connected to the hinge shaft of the first plate 271 via its output shaft, thereby controlling the flip angle and start / stop of the first plate 271 to achieve stable lifting and demolding of the aluminum profile. The first conveying roller 273 passes through the first plate 271, and the aluminum profile is conveyed in a straight line by the rotation of the first conveying roller 273 to adjust the bending position. When the aluminum profile is lifted and demolded and then bent again, the baffle 272 is used to limit the conveying side of the aluminum profile and correct the conveying angle. The baffle 272 can be an electric valve plate, that is, the baffle 272 is controlled to swing by electric drive. No specific limitation is made here. After the correction is completed, the baffle 272 returns to the horizontal state. At this time, the corrected aluminum profile can continue to move downwards of the upper mold 13 to prepare for correction.

[0062] The pallet mechanism 28 includes a second plate 281 hinged to the top of the swing plate 22. The hinge point between the second plate 281 and the swing plate 22 is located on the side of the V-shaped support 29 away from the flipping mechanism 27. A pallet motor 282 is installed on the top of the swing plate 22. The output end of the pallet motor 282 is connected to the second plate 281. Multiple sets of second conveying rollers 283 rotate on the top of the swing plate 22 and below the second plate 281. The second conveying rollers 283 are arranged through the second plate 281.

[0063] The pallet motor 282 drives the second plate 281 to rotate around the hinge point, in the opposite direction to the rotation of the first plate 271. The second conveying roller 283 passes through the second plate 281 and can cooperate with the first conveying roller 273 to realize long-distance bidirectional conveying of aluminum profiles, meeting the conveying requirements of multi-segment bending. The reverse rotation of the first plate 271 and the second plate 281 can realize the flipping action of the aluminum profile. The first plate 271 and the second plate 281 rotate upward at the same time, and the rotation angle of the first plate 271 is greater than the rotation angle of the second plate 281, causing the aluminum profile to tilt towards the second plate 281 after being lifted by the first plate 271. The second plate 281 lifts the tilted aluminum profile. Then the first plate 271 and the second plate 281 return to the horizontal state. Then the first conveying roller 273 and the second conveying roller 283 cooperate to convey the material in preparation for bending operation.

[0064] Specifically, when both the first plate 271 and the second plate 281 remain horizontal, the first conveying roller 273 and the second conveying roller 283 form a continuous bidirectional conveying channel. This allows for forward conveying of the aluminum profile to the bending station to complete a single bend, or reverse conveying of the aluminum profile to the adjusting plate assembly 3 to complete the side-switching of the bend. This adapts to the automated conveying requirements of multi-segment continuous bending. After the bending is completed and the swing plate 22 returns to a horizontal position, the flipping motor 274 drives the first plate 271 to flip upwards and lift the bent edge of the aluminum profile to complete demolding. During this process, the second plate 281 of the pallet mechanism 28 remains horizontal, providing stable support and limiting for the other end of the aluminum profile, reducing the risk of breakage during lifting. When the aluminum profile needs to be bent in reverse due to center of gravity shift and position movement, the flipping motor 274 and the pallet motor 282 drive the first plate 271 and the second plate 281 to flip upwards simultaneously, and control the rotation angle of the first plate 271 to be greater than that of the second plate 281, so that the aluminum profile is lifted by the first plate 271 and tilted smoothly towards the second plate 281, and the second plate 281 receives and completes the flipping of the aluminum profile. Then the first plate 271 and the second plate 281 are synchronously reset to the horizontal state, and the position and angle of the aluminum profile are corrected by the first conveying roller 273 and the second conveying roller 283 in conjunction with the baffle 272, so that the reverse bending operation can be carried out.

[0065] In Example 3, during several key processes, including demolding and lifting of the aluminum profile after a single bend, switching the bending side via the electric turntable 32, and flipping the profile via the flipping mechanism 27 and the support plate mechanism 28, the original positioning constraints on the aluminum profile must be released. Without constraints, the aluminum profile is prone to positional deviation in the plane. For large-sized aluminum profiles, sagging deformation of the long side due to its own weight may also occur. This phenomenon can lead to problems such as misalignment of the bending edge, loss of control over the bending angle accuracy, and poor profile forming.

[0066] To this end, two sets of adjustment components 4 are installed on the top of the swing plate 22. The two sets of adjustment components 4 are set opposite to each other. The adjustment components 4 are used to transport the bent aluminum profile and adjust the angle during bending. They provide auxiliary positioning, offset compensation and sag compensation for the aluminum profile, so that it can be clamped synchronously from both sides to ensure the aluminum profile is centered and to avoid lateral displacement of the aluminum profile during bending. The specific structure of the adjustment component 4 is as follows:

[0067] Both sets of adjustment components 4 include a telescopic cylinder 41 installed on the top of the swing plate 22 and located below the first plate 271. The piston rod end of the telescopic cylinder 41 passes through the side of the swing plate 22 and is connected to a U-shaped frame 43. Two guide rods 42 are symmetrically connected to the side wall of the U-shaped frame 43. The guide rods 42 pass through the side of the swing plate 22 and extend to the top of the swing plate 22. The telescopic cylinder 41 can drive the U-shaped frame 43 to move horizontally along the width direction of the swing plate 22, adjust the clamping distance of the two sets of adjustment components 4, and adapt to aluminum profiles with different cross-sectional dimensions. The guide rods 42 provide guidance for the movement of the U-shaped frame 43 and ensure the straightness of the movement of the U-shaped frame 43.

[0068] The U-shaped frame 43 has a rotating bearing plate 45 inside. An adjusting motor 44 is installed on one side of the U-shaped frame 43. The output end of the adjusting motor 44 is connected to one side of the bearing plate 45. A guide rail 46 is installed on the side wall of the bearing plate 45. Two sets of adjusting mechanisms 47 slide on the top of the guide rail 46. The adjusting mechanisms 47 are used to adjust the angle when bending the aluminum profile. The adjusting motor 44 can drive the bearing plate 45 to rotate around the rotating axis, adjust the angle of the bearing plate 45, and then drive the adjusting mechanisms 47 to adjust the angle synchronously to match the bending angle of the aluminum profile, so as to realize the auxiliary straightening during the bending process. The two sets of adjusting mechanisms 47 on the guide rail 46 can slide along the guide rail 46 to adjust the spacing, adapt to different bending positions of the aluminum profile, improve the versatility of the device, and ensure that the aluminum profile remains relatively horizontal when bending.

[0069] Both sets of adjustment mechanisms 47 include a sliding plate 471 slidably connected to the corresponding guide rail 46 and a positioning plate 472 installed on the side wall of the sliding plate 471. A drive cylinder 475 is installed on the side wall of the positioning plate 472. A hinge frame 476 is connected to the piston rod end of the drive cylinder 475. A connecting frame 477 is hinged to both sides of the hinge frame 476. A sliding column 474 is connected to the side of the connecting frame 477 near the positioning plate 472. A sliding groove 473 is opened on the side wall of the positioning plate 472. The sliding column 474 is inserted into the inside of the sliding groove 473. A first adjusting roller 478 and a second adjusting roller 4701 are rotatably connected to the side walls of the two corresponding connecting frames 477, respectively. The first adjusting roller 478 is located below the second adjusting roller 4701. A first sleeve 479 is connected to the outer side wall of the first adjusting roller 478. A second sleeve 4702 is provided on the outer side wall of the second adjusting roller 4701.

[0070] The sliding plate 471 can slide along the guide rail 46, driving the entire adjustment mechanism 47 to adjust its position to adapt to different aluminum profile widths and bending positions. When the piston rod of the drive cylinder 475 extends and retracts, it drives the hinge frame 476 to move back and forth. The hinge frame 476 drives the connecting frames 477 on both sides to rotate around the hinge point. At the same time, the sliding column 474 slides along the sliding groove 473 to limit the rotation trajectory of the connecting frame 477, realizing the synchronous opening and closing action of the two connecting frames 477. This, in turn, drives the first adjusting roller 478 and the second adjusting roller 4701 to clamp or release the side wall of the aluminum profile. At the same time, it can apply auxiliary straightening force to the aluminum profile during the bending process to ensure the accuracy of the bending angle.

[0071] Specifically, when the aluminum profile to be bent moves directly below the upper die 13, the first sleeve 479 and the second sleeve 4702 are arranged in a straight line. After the aluminum profile has moved, the adjusting motor 44 drives the bearing plate 45 to swing upward until the two sets of adjusting mechanisms 47 are lifted. Then, the driving cylinder 475 retracts, causing the hinge frame 476 to pull the end of the corresponding connecting frame 477. The two connecting frames 477 are adjusted to a parallel state, thereby clamping the aluminum profile with the second sleeve 4702 and the first sleeve 479. Subsequently, the telescopic cylinder 41 pushes the U-shaped frame 43 to move. The U-shaped frame 43 drives the bearing plate 45 and the two sets of adjusting mechanisms 47 to move horizontally. The first sleeve 479 and the second sleeve 4702 are driven to rotate by the first adjusting roller 478 and the second adjusting roller 4701, respectively, thereby supporting and positioning both sides of the aluminum profile.

[0072] When the aluminum profile is lifted and demolded by the flipping mechanism 27, the aluminum profile is very prone to displacement. Or when the aluminum profile is adjusted and transported by the electric turntable 32, the aluminum profile may also be displaced. Or the aluminum profile may be displaced after being flipped by the flipping mechanism 27 and the pallet mechanism 28. In these three cases, if it is clamped directly, the aluminum profile will still be displaced. In addition, if it is a large aluminum profile, its two sides will be drooping, which is not convenient for positioning and auxiliary correction.

[0073] Therefore, a three-jaw chuck 4703 is installed at the end of the second adjusting roller 4701. Three sets of jaws 4704 slide on the side wall of the three-jaw chuck 4703, one of which is connected to the inner side wall of the second sleeve 4702.

[0074] When the aluminum profile deviates, the adjusting motor 44 drives the bearing plate 45 to swing upward until the two sets of adjusting mechanisms 47 are lifted. Then, the drive cylinder 475 is controlled to retract, causing the hinge frame 476 to pull the end of the corresponding connecting frame 477. The two connecting frames 477 are adjusted to a parallel state. In this state, the three-jaw chuck 4703 is controlled to drive the jaws 4704 to retract. At this time, the second sleeve 4702 is lifted, leaving only the first sleeve 479 to support the bottom of the aluminum profile. The second sleeve 4702 does not apply pressure to the aluminum profile. Then, the two sets of adjusting mechanisms 47 are controlled to move closer to each other, causing the lifted aluminum profile to be moved and the hinge frame 476 pushes the side of the aluminum profile to adjust, so that the aluminum profile is adjusted to the angle to be bent.

[0075] Subsequently, the three-jaw chuck 4703 drives the jaws 4704 to open, the second sleeve 4702 is positioned and cooperates with the first sleeve 479 to clamp the aluminum profile. Then, the telescopic cylinder 41 pushes the U-shaped frame 43 to move, the U-shaped frame 43 drives the bearing plate 45 and the two sets of adjustment mechanisms 47 to move horizontally. The first sleeve 479 and the second sleeve 4702 are driven to rotate by the first adjustment roller 478 and the second adjustment roller 4701 respectively, thereby supporting and positioning both sides of the aluminum profile. Then, the upper die 13 is used for bending.

[0076] Example 4: A bending method for aluminum profiles, using the aforementioned bending device for aluminum profiles, includes the following steps:

[0077] S1. Place the aluminum profile to be bent above the flipping mechanism 27. The flipping mechanism 27 moves the part of the aluminum profile to be bent directly below the upper mold 13. Then, the aluminum profile is positioned by two sets of adjustment components 4.

[0078] The more specific steps in S1 are as follows:

[0079] S11. Place the aluminum profile to be bent above the first plate 271, and then use the first conveying roller 273 to move the part of the aluminum profile to be bent to the lower part of the upper mold 13.

[0080] S12. In this state, the first sleeve 479 and the second sleeve 4702 are arranged in a straight line. After the aluminum profile is moved, the adjusting motor 44 drives the bearing plate 45 to swing upward until the two sets of adjusting mechanisms 47 are lifted. Then, the driving cylinder 475 retracts, causing the hinge frame 476 to pull the end of the corresponding connecting frame 477. The two connecting frames 477 are adjusted to a parallel state, thereby making the second sleeve 4702 and the first sleeve 479 clamp the aluminum profile.

[0081] S13. Subsequently, the telescopic cylinder 41 pushes the U-shaped frame 43 to move. The U-shaped frame 43 drives the bearing plate 45 and the two sets of adjustment mechanisms 47 to move horizontally. The first sleeve 479 and the second sleeve 4702 are driven to rotate by the first adjustment roller 478 and the second adjustment roller 4701 respectively, thereby supporting and positioning both sides of the aluminum profile.

[0082] S2. Subsequently, the upper die 13 is driven down by the drive mechanism 12 to press and bend the aluminum profile to be bent. At the same time, the auxiliary component 2 lifts the aluminum profile and tilts it. After bending, the upper die 13 is lifted, and then the flipping mechanism 27 lifts the aluminum profile, causing the bent part of the aluminum profile to be lifted out of the lower die 15. The aluminum profile is sent out in the opposite direction due to the angle and conveying power of the flipping mechanism 27. If a second bending is required, the flipping mechanism 27 needs to adjust the angle. Then the flipping mechanism 27 continues to send the aluminum profile into the bending process.

[0083] The more specific steps of S2 are as follows:

[0084] S21. Then, the upper die 13 is driven to move down by the drive mechanism 12 to press and bend the part of the aluminum profile to be bent. At the same time, the base 21 extends and pushes the swing plate 22 to swing. The swing plate 22 lifts the aluminum profile and swings it to tilt. After the aluminum profile is bent, the upper die 13 is lifted.

[0085] S22. Subsequently, the flip motor 274 drives the first plate 271 to swing, and the first plate 271 lifts the aluminum profile, causing the bent part of the aluminum profile to be lifted out of the lower mold 15. The aluminum profile is sent out in the opposite direction due to the angle of the first plate 271 and the conveying power of the first conveying roller 273. If a second bending is required, wait for the first plate 271 to return to the horizontal state, and the first conveying roller 273 will drive the aluminum profile to move towards the upper mold 13 again. At this time, the baffle 272 swings up to block the aluminum profile. The angle of the aluminum profile is adjusted by the baffle 272. After that, the baffle 272 returns to the horizontal state, and the first conveying roller 273 continues to send the aluminum profile into the lower part of the upper mold 13 for bending.

[0086] S3. After completing the bending on one side, if it is necessary to switch the side of the aluminum profile, the flipping mechanism 27 and the pallet mechanism 28 can be used to retract to the top of the electric turntable 32 for rotation. After the rotation is completed, the pallet mechanism 28 and the flipping mechanism 27 are used to transport the aluminum profile again, and the two sets of adjustment components 4 are used to assist in the adjustment again. Then, the bending operation is carried out through the upper die 13. If it is necessary to bend the side in the opposite direction, the aluminum profile is flipped through the flipping mechanism 27 and the pallet mechanism 28, and the flipping mechanism 27 and the adjustment components 4 are used to assist in the adjustment again. Then, the bending operation is carried out through the upper die 13.

[0087] The more specific steps for S3 are as follows:

[0088] S31. After completing the bending on one side, if it is necessary to switch the side of the aluminum profile, the first conveying roller 273 and the second conveying roller 283 can be used to retract to the top of the electric turntable 32 for rotation. After the rotation is completed, the second conveying roller 283 and the first conveying roller 273 are used to transport it again.

[0089] S32. At this time, the adjusting motor 44 drives the bearing plate 45 to swing upward until the two sets of adjusting mechanisms 47 are lifted. Then, by controlling the drive cylinder 475 to retract, the hinge frame 476 pulls the end of the corresponding connecting frame 477, and the two connecting frames 477 are adjusted to a parallel state. In this state, the three-jaw chuck 4703 is controlled to drive the jaw 4704 to retract. At this time, the second sleeve 4702 is lifted, leaving only the first sleeve 479 to support the bottom of the aluminum profile. The two sets of adjusting mechanisms 47 are controlled to move closer to each other, causing the lifted aluminum profile to be moved and the hinge frame 476 pushes the side of the aluminum profile to adjust, so that the aluminum profile is adjusted to the angle to be bent.

[0090] S33. Subsequently, the three-jaw chuck 4703 drives the jaws 4704 to open, the second sleeve 4702 is positioned and cooperates with the first sleeve 479 to clamp the aluminum profile. Then, the telescopic cylinder 41 pushes the U-shaped frame 43 to move. The U-shaped frame 43 drives the bearing plate 45 and the two sets of adjustment mechanisms 47 to move horizontally. The first sleeve 479 and the second sleeve 4702 are driven to rotate by the first adjustment roller 478 and the second adjustment roller 4701 respectively, thereby supporting and positioning both sides of the aluminum profile.

[0091] S34. After the aluminum profile is adjusted, it is bent using the upper die 13.

[0092] S35. If a reverse bending of the side is required, firstly, the aluminum profile is retracted to the top of the first plate 271. Then, the first plate 271 and the second plate 281 swing simultaneously, and the swing angle of the first plate 271 is greater than the swing angle of the second plate 281. Then, the aluminum profile is flipped onto the side wall of the second plate 281. After that, the second plate 281 and the first plate 271 return to a horizontal state. The second conveying roller 283 and the first conveying roller 273 convey the aluminum profile, and the aluminum profile is adjusted again through steps S32 and S33. Then, the bending operation is performed through the upper die 13.

[0093] against Figure 9 For the irregular aluminum profile with a single-sided stepped notch shown, the adaptation control logic of this method is as follows:

[0094] The X and Y markings on the main plane of the profile are the support and positioning areas corresponding to the two sets of core bending conditions: X is the geometric center area in the width direction of the profile, and Y is the center area of ​​the orthographic projection of the step edge ec on the main body of the profile.

[0095] The specific adaptation and control steps for the two core bending conditions of this profile are as follows:

[0096] (1) Bending condition of bottom edge bd

[0097] First, positioning and alignment: When performing step S1, the profile is transported to the bending station to ensure that the edge bd to be bent is completely aligned with the bending edge of the upper die 13 and the center of the groove of the lower die 15, and the core support positioning point is locked in the X area.

[0098] Second, clamping adaptation: When performing steps S12-S13, the extension stroke of the telescopic cylinder 41 in the two symmetrically arranged adjustment components 4 remains consistent. It is only necessary to adjust the sliding distance of the two adjustment mechanisms 47 in a single adjustment component 4 along the guide rail 46 according to the effective clamping length of sides ab and cd to complete the synchronous centering and clamping positioning of the two long sides of the profile.

[0099] Third, bending operation: After completing the positioning and clamping, execute step S2 to complete the bending process of the bottom edge bd.

[0100] (2) Step edge EC bending condition

[0101] First, positioning and alignment: When performing step S1, the profile is transported to the bending station, and the edge ec of the step to be bent is aligned with the center position of the bending cutting edge of the upper die 13 and the groove of the lower die 15. The core support positioning point is switched to the Y area.

[0102] Second, offset compensation adaptation: When performing steps S12-S13, the telescopic stroke of the telescopic cylinders 41 of the two sets of adjustment components 4 is simultaneously adjusted according to the difference in the overhang length of the ab side and the cd side to compensate for the offset of the bending center; at the same time, the sliding distance of the adjustment mechanism 47 in the two sets of adjustment components 4 is adjusted according to the effective clamping length of the ab and cd sides to ensure the stability of the clamping and positioning.

[0103] Third, sag compensation and adaptation: After executing step S13, control the adjustment motor 44 of the adjustment component 4 corresponding to the ab side to drive the support plate 45 to tilt and swing upward. Through the two sets of adjustment mechanisms 47 on the support plate 45, the ab side is raised to a preset height to compensate for the sag of the profile from the af side to the ef side, so that the ec side and the groove of the lower mold 15 are kept horizontally aligned.

[0104] Fourth, bending operation: After completing the positioning and compensation adjustment, execute step S2 to complete the bending process of the step edge ec.

[0105] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

Claims

1. A bending device for aluminum profiles, characterized in that: Includes a bending assembly (1) for bending aluminum profiles; The auxiliary component (2) is used to support and lift the aluminum profile to be bent. The auxiliary component (2) includes a base (21) disposed on one side of the bending component (1) and a swing plate (22) hinged to the top of the base (21). The top of the swing plate (22) is inlaid with a flipping mechanism (27) and a support plate mechanism (28) for supporting the plate. The support plate directions of the flipping mechanism (27) and the support plate mechanism (28) are opposite. The swing plate (22) has a V-shaped support (29) in the middle of the top surface. The flipping mechanism (27) includes a first plate (271) hinged to the top of the swing plate (22) and on one side of the V-shaped support (29). A baffle (272) for correcting the angle of the aluminum profile is hinged to the side of the first plate (271) away from the V-shaped support (29). Multiple sets of first conveying rollers (273) rotate on the top of the swing plate (22) and below the first plate (271). The first conveying rollers (273) are arranged through the first plate (271). The adjustment plate assembly (3) is used to adjust the angle of the aluminum profile; The adjustment component (4) is used to clamp and position the aluminum profile during the bending process, compensate for offset, compensate for sag and correct angle. A flip motor (274) is installed on the top of the swing plate (22), and the output end of the flip motor (274) is connected to one side of the first plate (271). The pallet mechanism (28) includes a second plate (281) hinged to the top of the swing plate (22). The hinge point between the second plate (281) and the swing plate (22) is located on the side of the V-shaped support (29) away from the flipping mechanism (27). A pallet motor (282) is installed on the top of the swing plate (22). The output end of the pallet motor (282) is connected to the second plate (281). Multiple sets of second conveying rollers (283) rotate on the top of the swing plate (22) and below the second plate (281). The second conveying rollers (283) are arranged through the second plate (281). The adjustment plate assembly (3) includes a support frame (31) disposed on one side of the auxiliary assembly (2), and an electric turntable (32) is disposed on the top of the support frame (31), the electric turntable (32) extending between two extension rods (25).

2. The bending device for aluminum profiles according to claim 1, characterized in that: The bending assembly (1) includes a frame (11) and a drive mechanism (12) mounted on the top of the frame (11). The output end of the drive mechanism (12) is connected to an upper die (13). A workbench (14) is provided on one side of the frame (11). A lower die (15) is mounted on the top of the workbench (14). The upper die (13) and the lower die (15) are arranged opposite to each other.

3. A bending device for aluminum profiles according to claim 2, characterized in that: A lifting cylinder (23) is hinged to the top of the base (21). The piston rod end of the lifting cylinder (23) is hinged to the bottom of the swing plate (22). A positioning column (24) is installed on the top of the base (21). The positioning column (24) is used to position and block the swing plate (22). Two extension rods (25) are provided on one side of the swing plate (22). The ends of the two extension rods (25) are connected to an extension plate (26).

4. A bending device for aluminum profiles according to claim 3, characterized in that: The adjustment components (4) are configured in two sets, which are arranged opposite to each other. Each set of adjustment components (4) includes a telescopic cylinder (41) installed on the top of the swing plate (22) and located below the first plate (271). The piston rod end of the telescopic cylinder (41) passes through the side of the swing plate (22) and is connected to a U-shaped frame (43). Two guide rods (42) are symmetrically connected to the side wall of the U-shaped frame (43). The guide rods (42) pass through the swing plate (22). The U-shaped frame (43) has a support plate (45) that rotates inside the side and extends to the top of the swing plate (22). An adjustment motor (44) is installed on one side of the U-shaped frame (43). The output end of the adjustment motor (44) is connected to one side of the support plate (45). A guide rail (46) is installed on the side wall of the support plate (45). Two sets of adjustment mechanisms (47) slide on the top of the guide rail (46). The adjustment mechanism (47) is used to adjust the angle when bending the aluminum profile.

5. A bending device for aluminum profiles according to claim 4, characterized in that: Both sets of adjustment mechanisms (47) include a sliding plate (471) slidably connected to the corresponding guide rail (46) and a positioning plate (472) installed on the side wall of the sliding plate (471). A drive cylinder (475) is installed on the side wall of the positioning plate (472). A hinge frame (476) is connected to the piston rod end of the drive cylinder (475). A connecting frame (477) is hinged to both sides of the hinge frame (476). A sliding column (474) is connected to the side of the connecting frame (477) near the positioning plate (472). A sliding groove (473) is opened on the side wall of the positioning plate (472). The sliding column (474) is inserted into the inside of the sliding groove (473).

6. A bending device for aluminum profiles according to claim 5, characterized in that: The two corresponding connecting frames (477) have a first adjusting roller (478) and a second adjusting roller (4701) rotating on their side walls respectively. The first adjusting roller (478) is located below the second adjusting roller (4701). The outer side wall of the first adjusting roller (478) is connected to a first sleeve (479), and the outer side wall of the second adjusting roller (4701) is provided with a second sleeve (4702).

7. A bending device for aluminum profiles according to claim 6, characterized in that: The end of the second adjusting roller (4701) is equipped with a three-jaw chuck (4703), and three sets of jaws (4704) slide on the side wall of the three-jaw chuck (4703), one of which is connected to the inner side wall of the second sleeve (4702).

8. A method for bending aluminum profiles, using a bending device for aluminum profiles as described in any one of claims 1-7, characterized in that, Includes the following steps: S1. Place the aluminum profile to be bent above the flipping mechanism (27). The flipping mechanism (27) moves the part of the aluminum profile to be bent to the lower part of the upper mold (13). Then, the aluminum profile is assisted in positioning, offset compensation and sag compensation by two sets of adjustment components (4). S2. Then, the upper die (13) is driven down by the drive mechanism (12) to press and bend the aluminum profile to be bent. At the same time, the auxiliary component (2) lifts the aluminum profile and tilts it. After bending, the upper die (13) is lifted up, and then the flipping mechanism (27) lifts the aluminum profile, causing the bent part of the aluminum profile to be lifted out of the lower die (15). The aluminum profile is sent out in the opposite direction due to the angle and conveying power of the flipping mechanism (27). If a second bending is required, the flipping mechanism (27) needs to adjust the angle. Then the flipping mechanism (27) continues to send the aluminum profile into the bending process. S3. After completing the bending on one side, if it is necessary to switch the side of the aluminum profile, the flipping mechanism (27) and the pallet mechanism (28) can be used to move back to the top of the electric turntable (32) for rotation. After the rotation is completed, the pallet mechanism (28) and the flipping mechanism (27) are used to transport it again, and the two sets of adjustment components (4) are used to assist in the adjustment again. Then the bending operation is carried out through the upper mold (13). If it is necessary to bend the side in the opposite direction, the aluminum profile is flipped through the flipping mechanism (27) and the pallet mechanism (28), and the position is adjusted again through the flipping mechanism (27) and the adjustment components (4). Then the bending operation is carried out through the upper mold (13).

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