Metal material bending device for automobile sliding door guide rail

Abstract

The application relates to the field of automobile sliding door guide rail manufacturing technology, and discloses a metal material bending device for automobile sliding door guide rails, which comprises a workbench, a first bending mechanism and a second bending mechanism are sequentially arranged on the workbench, the first bending mechanism is used for sequentially bending two first bending segments and two second bending segments by 90 DEG to form a mouth-shaped structure, and the second bending mechanism is used for sequentially bending a third bending segment and a fourth bending segment by 90 DEG to form a Z-shaped structure; a third bending mechanism is further arranged on the workbench; the metal material bending device for automobile sliding door guide rails integrally completes the automobile sliding door guide rail with a local arc-shaped segment through a plurality of bending processes, a seal is formed at the end of the arc-shaped segment through bending, a track tail does not need to be additionally arranged, and a flexible supporting part is arranged in the guide rail to support the inner wall of the steel material in the arc-shaped bending process, so that deformation is avoided.

Description

Technical Field

[0001] This invention relates to the field of automotive sliding door guide rail manufacturing technology, specifically to a metal material bending device for automotive sliding door guide rails. Background Technology

[0002] Car doors typically come in two types: revolving doors and sliding doors. Sliding doors are doors that can slide along the car body. To support the sliding of the sliding door, a sliding door guide rail needs to be installed on the car body. The sliding door guide rail consists of a straight track and a curved track. The curved track is used to allow the sliding door to fit snugly against the car body when closed.

[0003] Manufacturing sliding door rails requires the processing of metal materials. Raw sheet metal is shaped into sliding door rails through processes such as bending and welding. The most common method for processing metal materials for automotive sliding door rails is a split-type manufacturing process. This involves bending sheet metal into C-shaped steel sections using a bending machine. One section of the C-shaped steel serves as the straight rail, while the other section is further bent into an arc shape to form the curved rail. The straight and curved rails are then combined using welding or bolting. Additionally, a rail end is installed at the end of the curved rail to seal the port.

[0004] This split-processing method undoubtedly increases manufacturing costs and is inconvenient for installation. The reason for not choosing integrated processing is as follows: First, during the process of bending the C-shaped steel into an arc, the inner side of the steel will undergo large deformation, which will affect the use of the track. In particular, bending only a section of the C-shaped steel into an arc shape at the end rather than bending it as a whole will cause more deformation. Second, even after partially bending the C-shaped steel into an arc shape, the track tail part still needs to be installed, and the production process still needs to be simplified.

[0005] Therefore, in order to solve the above-mentioned technical problems in the prior art, a metal material bending device for automobile sliding door guide rails is proposed. Summary of the Invention

[0006] This invention provides a metal material bending device for automotive sliding door guide rails, which integrates the metal sheet through multiple bending processes to form an automotive sliding door guide rail with a partially arc-shaped section. The arc-shaped section is sealed by bending at the end, eliminating the need for a track tail. Furthermore, the device utilizes flexible support components to support the inner wall of the steel within the guide rail during the arc bending process, thus preventing deformation. This invention solves the problems mentioned in the background art.

[0007] The present invention provides the following technical solution: A bending device for metal materials used in automotive sliding door guide rails, which is used for bending metal plates. The metal plate includes two first bending segments and two second bending segments that are symmetric about the central axis of the metal plate. The metal plate further includes a third bending segment and a fourth bending segment;

[0008] The bending device for metal materials used in automotive sliding door guide rails includes a workbench, on which a first bending mechanism and a second bending mechanism are sequentially arranged. The first bending mechanism is used to bend the two first bending segments and the two second bending segments by 90° in sequence to form a square shape, and the second bending mechanism is used to bend the third bending segment and the fourth bending segment by 90° in sequence to form a Z shape;

[0009] A third bending mechanism is further arranged on the workbench. The third bending mechanism is located between the first bending mechanism and the second bending mechanism. The third bending mechanism is used to bend the end of the metal plate into an arc shape, and finally process the metal plate into a sliding door guide rail.

[0010] As an optional solution of the bending device for metal materials used in automotive sliding door guide rails according to the present invention, wherein: The first bending mechanism includes a first housing and a first hydraulic cylinder arranged on the workbench. The first housing is U-shaped, and a first pressing plate is arranged on the piston rod of the first hydraulic cylinder. The first pressing plate is convex and fits with the first housing;

[0011] Two second hydraulic cylinders are symmetrically arranged on the workbench, and second pressing plates are arranged on the piston rods of the two second hydraulic cylinders;

[0012] After aligning the central axis of the metal plate with the central axis of the first housing and placing it, the first hydraulic cylinder drives the first pressing plate to bend the metal plate to bend the two first bending segments by 90°, and then the two second hydraulic cylinders respectively drive the two second pressing plates to bend the two second bending segments by 90°.

[0013] As an optional solution of the bending device for metal materials used in automotive sliding door guide rails according to the present invention, wherein: The first bending mechanism further includes a third hydraulic cylinder arranged on the workbench, and a push rod is arranged on the piston rod of the third hydraulic cylinder. The push rod fits with the inner cavity of the first housing;

[0014] A number of conveying rollers are symmetrically arranged on the workbench. The third hydraulic cylinder drives the push rod to convey the metal plate bent into a square shape to the position of the number of conveying rollers.

[0015] As an optional solution of the metal material bending device for automobile sliding door guide rails described in this invention, the second bending mechanism includes a second housing and a fourth hydraulic cylinder disposed on the workbench, the second housing fitting into the inner cavity of the mouth-shaped metal plate, and the second housing being L-shaped.

[0016] The piston rod of the fourth hydraulic cylinder is provided with a pressure mold, and a swing block is rotatably provided on the pressure mold. The swing block has a right-angle notch. The pressure mold is also provided with a first motor, and the output shaft of the first motor is connected to the swing block.

[0017] When the swing block is in a state perpendicular to the diagonal of its right-angle notch, the fourth hydraulic cylinder drives the swing block to bend the third bending segment toward the vertical side of the second housing, while the first motor drives the swing block to rotate 45° to bend the fourth bending segment toward the horizontal side of the second housing, thereby bending the metal plate, the third bending segment and the fourth bending segment into a Z shape.

[0018] As an optional embodiment of the metal material bending device for automobile sliding door guide rails described in this invention, the metal sheet further includes two fastening sections and two fastening grooves symmetrical about the central axis of the metal sheet;

[0019] After the third and fourth bending sections are bent into a Z-shape, the two fastening sections are bent at 90° to fit into the two fastening grooves.

[0020] As an optional embodiment of the metal material bending device for automobile sliding door guide rails described in this invention, the second bending mechanism further includes two fifth hydraulic cylinders symmetrically arranged on the worktable. Each of the piston rods of the two fifth hydraulic cylinders is provided with a third pressure plate. The two fifth hydraulic cylinders drive the two third pressure plates to bend the two fastening sections by 90°.

[0021] As an optional solution of the metal material bending device for automobile sliding door guide rails described in this invention, the third bending mechanism includes a mounting base disposed on the workbench, a first rotating shaft rotatably disposed on the mounting base, and a fixed mold wheel disposed on the first rotating shaft;

[0022] A rotating seat is rotatably mounted on the first rotating shaft, and a second rotating shaft is mounted on the rotating seat, with a moving mold wheel mounted on the second rotating shaft;

[0023] The third bending mechanism also includes a driving component. When the metal sheet is fitted between the fixed mold wheel and the moving mold wheel, the driving component drives the fixed mold wheel to rotate and simultaneously drives the moving mold wheel to make a circular motion based on the first rotating shaft, thereby bending the metal sheet into an arc shape.

[0024] As an optional solution of the metal material bending device for automobile sliding door guide rails described in this invention, the driving component includes a second motor disposed on the workbench, a third rotating shaft disposed on the output shaft of the second motor, and the rotating seat connected to the third rotating shaft;

[0025] The workbench is also equipped with a sixth hydraulic cylinder and a support base. The piston rod of the sixth hydraulic cylinder is equipped with a rack, which is slidably connected to the support base. The first rotating shaft is equipped with a gear, which meshes with the rack.

[0026] As an optional solution of the metal material bending device for automobile sliding door guide rails described in this invention, the third bending mechanism further includes an adjustment component, which is used to control the radius of the circular motion of the moving mold wheel;

[0027] The adjustment assembly includes a seventh hydraulic cylinder mounted on the rotating base. A slide block is mounted on the piston rod of the seventh hydraulic cylinder. A slide groove is provided on the rotating base. The slide block is slidably connected to the slide groove. A connecting seat is rotatably mounted inside the slide block. The second rotating shaft is connected to the connecting seat.

[0028] As an optional solution of the metal material bending device for automobile sliding door guide rails described in this invention, the third bending mechanism further includes a flexible support component. The flexible support component includes a housing disposed on the fixed mold wheel. Two first trapezoidal rods are slidably disposed on the housing. Each of the two first trapezoidal rods is provided with an arc-shaped support block. The two arc-shaped support blocks are elastically connected to the housing through two springs respectively.

[0029] The fixed mold wheel is also equipped with an eighth hydraulic cylinder, and the piston rod of the eighth hydraulic cylinder is equipped with a second trapezoidal rod, which is engaged with the inclined surfaces of the two first trapezoidal rods.

[0030] The present invention has the following beneficial effects:

[0031] 1. This automotive sliding door guide rail uses a metal bending device that completes the processing from metal sheet to sliding door guide rail in one integrated process through three bending steps, greatly improving processing efficiency and the convenience of installation and use. First, the first bending mechanism bends the metal sheet into a U-shape for preliminary processing. Then, the second bending mechanism performs a Z-shaped bend on the two pre-reserved bending sections on the metal sheet, forming the edge sealing and installation edge of the curved section of the sliding door guide rail. This eliminates the need to add a track tail during subsequent installation, simplifying the process. Finally, the third bending mechanism performs a partial curved bend on the metal sheet to form the sliding door guide rail.

[0032] 2. This metal bending device for automotive sliding door guide rails, when performing Z-shaped bending on the third and fourth bending sections of the metal sheet, utilizes a cylindrical pressing structure with a right-angle notch, coupled with an L-shaped second housing. This allows the swing block to rotate 45° during pressing to engage with the second housing, thus completing the Z-shaped bending of the third and fourth bending sections in two directions by 90° in one step. This not only improves processing speed but also reduces deformation caused by step-by-step bending.

[0033] 3. This metal bending device for automotive sliding door guide rails utilizes two arc-shaped support blocks connected to a fixed die wheel during the arc bending process. These support blocks, driven by hydraulic cylinders, expand and compress the inner cavity of the metal sheet, thus supporting the inner wall of the sheet and reducing internal deformation during the arc bending process. Furthermore, this flexible support assembly can be opened and stopped quickly, offering advantages over existing internal supports that use padding strips for arc bending, including durability, high strength, and strong compressive force. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of the metal sheet of the present invention.

[0035] Figure 2 This is a schematic diagram of the bending device of the present invention.

[0036] Figure 3 For the present invention Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0037] Figure 4 This is an exploded structural diagram of the first bending mechanism of the present invention.

[0038] Figure 5 This is an exploded structural diagram of the second bending mechanism of the present invention.

[0039] Figure 6 This is a schematic diagram illustrating the working principle of the second bending mechanism of the present invention.

[0040] Figure 7 This is an exploded structural diagram of the third bending mechanism of the present invention.

[0041] Figure 8 This is a cross-sectional view of the third bending mechanism of the present invention.

[0042] Figure 9 For the present invention Figure 8 A magnified schematic diagram of the structure at point B in the middle.

[0043] Figure 10 For the present invention Figure 9 A magnified schematic diagram of the structure at point C.

[0044] In the diagram: 100, metal sheet; 110, sliding door guide rail; 120, first bending section; 130, second bending section; 140, third bending section; 150, fourth bending section; 160, fastening section; 170, fastening groove; 200, workbench; 300, first bending mechanism; 310, first housing; 320, first hydraulic cylinder; 330, first pressure plate; 340, second hydraulic cylinder; 350, second pressure plate; 360, third hydraulic cylinder; 370, push rod; 400, conveying roller; 500, second bending mechanism; 510, second housing; 520, fourth hydraulic cylinder; 530, pressure die; 540, swing block; 550, first motor; 560, fifth hydraulic cylinder; 5 70. Third pressure plate; 600. Third bending mechanism; 610. Mounting base; 620. First rotating shaft; 630. Fixed mold wheel; 640. Rotating seat; 650. Second rotating shaft; 660. Moving mold wheel; 670. Drive assembly; 671. Second motor; 672. Third rotating shaft; 673. Sixth hydraulic cylinder; 674. Rack; 675. Support base; 676. Gear; 680. Adjustment assembly; 681. Seventh hydraulic cylinder; 682. Slide; 683. Slide groove; 684. Connecting seat; 690. Flexible support assembly; 691. Housing; 692. First trapezoidal rod; 693. Arc-shaped support block; 694. Spring; 695. Eighth hydraulic cylinder; 696. Second trapezoidal rod. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0046] To achieve integrated processing, the metal sheet 100 is processed into a sliding door rail 110 that has both a partial arc section and a sealing section through a bending process, as shown in Example 1.

[0047] Please see Figures 1-7 A metal material bending device for automobile sliding door guide rails is used to bend a metal sheet 100. The metal sheet 100 includes two first bending segments 120 and two second bending segments 130 that are symmetrical about the central axis of the metal sheet 100. The metal sheet 100 also includes a third bending segment 140 and a fourth bending segment 150.

[0048] The bending device for the metal material of the automobile sliding door guide rail includes a workbench 200, on which a first bending mechanism 300 and a second bending mechanism 500 are sequentially arranged. The first bending mechanism 300 is used to bend two first bending segments 120 and two second bending segments 130 by 90° in sequence to form a square shape, and the second bending mechanism 500 is used to bend a third bending segment 140 and a fourth bending segment 150 by 90° in sequence to form a Z shape;

[0049] A third bending mechanism 600 is further arranged on the workbench 200. The third bending mechanism 600 is located between the first bending mechanism 300 and the second bending mechanism 500. The third bending mechanism 600 is used to bend the end of the metal plate 100 into an arc shape, and finally process the metal plate 100 into a sliding door guide rail 110.

[0050] In this embodiment: First, the two first bending segments 120 and the two second bending segments 130 are symmetrically bent by 90° into a square shape through the first bending mechanism 300. The upper end gap is used to install the pulley of the car door. Then, the third bending segment 140 and the fourth bending segment 150 at the right end of the metal plate 100 are bent into a Z shape. The third bending segment 140 is used as the edge sealing of the arc segment, thus eliminating welding or the installation of the track tail. The function of the fourth bending segment 150 is to use the reserved hole positions on it as bolt holes for connecting to the vehicle body. The whole metal plate 100 can be obtained by cutting. Finally, the right end part of the metal plate 100 is locally bent into an arc shape to obtain the sliding door guide rail 110 product. Embodiment

[0051] To complete the preliminary processing process of bending the metal plate 100 into a square shape, Embodiment 2 is proposed;

[0052] This embodiment is an improved explanation based on Embodiment 1. Specifically, please refer to Figures 1-4 , the first bending mechanism 300 includes a first housing 310 and a first hydraulic cylinder 320 arranged on the workbench 200. The first housing 310 is U-shaped, and a first pressing plate 330 is arranged on the piston rod of the first hydraulic cylinder 320. The first pressing plate 330 is convex and fits with the first housing 310;

[0053] Two second hydraulic cylinders 340 are symmetrically arranged on the workbench 200, and second pressing plates 350 are arranged on the piston rods of the two second hydraulic cylinders 340;

[0054] After aligning the central axis of the metal plate 100 with the central axis of the first housing 310 and placing it, the first hydraulic cylinder 320 drives the first pressing plate 330 to bend the metal plate 100 to bend the two first bending segments 120 by 90°, and then the two second hydraulic cylinders 340 respectively drive the two second pressing plates 350 to bend the two second bending segments 130 by 90°;

[0055] The first bending mechanism 300 also includes a third hydraulic cylinder 360 disposed on the worktable 200. A push rod 370 is disposed on the piston rod of the third hydraulic cylinder 360, and the push rod 370 fits into the inner cavity of the first housing 310.

[0056] Several conveying rollers 400 are symmetrically arranged on the workbench 200. The push rod 370 is driven by the third hydraulic cylinder 360 to convey the metal plate 100 bent into an octagonal shape to the several conveying rollers 400.

[0057] In this embodiment: After the metal sheet 100 is aligned and placed in the middle of the upper end of the first housing 310, the first pressure plate 330 is pressed down by the first hydraulic cylinder 320, which can bend the metal sheet 100 along the internal contour of the first housing 310. At this time, the two second bending segments 130 extend out of the first housing 310. Then, the two second hydraulic cylinders 340 drive the two second pressure plates 350 to bend the two second bending segments 130, thus completing the initial bending process of the metal sheet 100.

[0058] After bending, the third hydraulic cylinder 360 drives the push rod 370 to extend into the first housing 310 to push out the metal sheet 100. The right end of the metal sheet 100 will then reach between the two sets of symmetrical conveyor rollers 400. The operation of the two sets of conveyor rollers 400 can drive the metal sheet 100 to move to the right or left.

[0059] It should be noted that the conveyor rollers 400 can be driven by friction through a motor or other drive device. As this is conventional prior art, the drive device is not shown in the illustration. Example

[0060] To achieve a one-step Z-shaped bend of the third bending segment 140 and the fourth bending segment 150, simplify the bending process, and facilitate one-step forming to reduce deformation, Example 3 is proposed.

[0061] This embodiment is an improvement upon embodiment 1. For details, please refer to [link / reference]. Figures 1-6 The second bending mechanism 500 includes a second housing 510 and a fourth hydraulic cylinder 520 disposed on the worktable 200. The second housing 510 fits into the inner cavity of the mouth-shaped metal plate 100 and the second housing 510 is L-shaped.

[0062] The piston rod of the fourth hydraulic cylinder 520 is provided with a pressure mold 530, and a swing block 540 is rotatably provided on the pressure mold 530. A right-angle notch is provided on the swing block 540. The pressure mold 530 is also provided with a first motor 550, and the output shaft of the first motor 550 is connected to the swing block 540.

[0063] When the swing block 540 is in a state perpendicular to the diagonal of its right-angle notch, the fourth hydraulic cylinder 520 drives the swing block 540 to bend the third bending segment 140 toward the vertical side of the second housing 510, while the first motor 550 drives the swing block 540 to rotate 45° to bend the fourth bending segment 150 toward the horizontal side of the second housing 510, thereby bending the metal plate 100, the third bending segment 140 and the fourth bending segment 150 into a Z shape;

[0064] The metal sheet 100 also includes two fastening sections 160 and two fastening grooves 170 that are symmetrical about the central axis of the metal sheet 100;

[0065] After bending the third bending segment 140 and the fourth bending segment 150 into a Z-shape, the two fastening segments 160 are bent at 90° to fit into the two fastening grooves 170.

[0066] The second bending mechanism 500 also includes two fifth hydraulic cylinders 560 symmetrically arranged on the worktable 200. Each of the piston rods of the two fifth hydraulic cylinders 560 is provided with a third pressure plate 570. The two fifth hydraulic cylinders 560 drive the two third pressure plates 570 respectively to bend the two fastening sections 160 by 90°.

[0067] In this embodiment: driven by several conveying rollers 400, the metal plate 100 moves to the right and passes through the fixed mold wheel 630 and the moving mold wheel 660 of the third bending mechanism 600 to reach the second housing 510. At this time, the right end of the metal plate 100 fits with the second housing 510, and the second housing 510 is located in the inner cavity of the metal plate 100.

[0068] like Figure 6 As shown, during the process of the fourth hydraulic cylinder 520 driving the mold 530 and the swing block 540 to move upward, the swing block 540 is initially in the shape of an approximately three-quarter circle, with the diagonal of its right-angle notch in a vertical position. At this time, the left notch of the swing block 540 will first abut against the third bending section 140 and bend it along the right-angle side of the second housing 510.

[0069] During this process, the first motor 550 synchronously drives the swing block 540 to gradually rotate counterclockwise until its right-angle notch matches a horizontal and vertical edge of the second housing 510, and finally presses the third bending section 140 and the fourth bending section 150 onto the second housing 510, thus completing the Z-shaped bend in one step.

[0070] Furthermore, to eliminate the welding process between the third bending segment 140 and the first bending segment 120, two symmetrically arranged fastening segments 160 are provided on the third bending segment 140, and fastening grooves 170 are provided on both first bending segments 120, forming a set of fastening structures. Holes are pre-drilled on both the fastening segments 160 and the first bending segments 120, allowing for reinforcement of the first bending segment 120 and the third bending segment 140 by bolting fastening plates. Specifically, by using two fifth hydraulic cylinders 560 to drive two third pressure plates 570 to move to the left and press them together, the two fastening segments 160 can be bent and fastened within the two fastening grooves 170. Example

[0071] To complete the partial arc bending process of the metal sheet 100 and reduce the deformation inside the metal sheet 100 during the arc bending process, Example 4 is proposed.

[0072] This embodiment is an improvement upon embodiment 1. For details, please refer to [link / reference]. Figures 1-10 The third bending mechanism 600 includes a mounting base 610 disposed on the worktable 200, a first rotating shaft 620 rotatably disposed on the mounting base 610, and a fixed mold wheel 630 disposed on the first rotating shaft 620;

[0073] A rotating seat 640 is rotatably mounted on the first rotating shaft 620, a second rotating shaft 650 is mounted on the rotating seat 640, and a moving mold wheel 660 is mounted on the second rotating shaft 650.

[0074] The third bending mechanism 600 also includes a drive assembly 670. When the metal sheet 100 is fitted between the fixed mold wheel 630 and the moving mold wheel 660, the drive assembly 670 drives the fixed mold wheel 630 to rotate and simultaneously drives the moving mold wheel 660 to make a circular motion based on the first rotating shaft 620, thereby bending the metal sheet 100 into an arc shape.

[0075] The drive assembly 670 includes a second motor 671 disposed on the worktable 200, a third rotating shaft 672 disposed on the output shaft of the second motor 671, and a rotary seat 640 connected to the third rotating shaft 672;

[0076] The workbench 200 is also equipped with a sixth hydraulic cylinder 673 and a support base 675. The piston rod of the sixth hydraulic cylinder 673 is equipped with a rack 674, which is slidably connected to the support base 675. The first rotating shaft 620 is equipped with a gear 676, which meshes with the rack 674.

[0077] The third bending mechanism 600 also includes an adjustment component 680, which is used to control the radius of the circular motion of the moving mold wheel 660;

[0078] The adjustment assembly 680 includes a seventh hydraulic cylinder 681 mounted on a rotary seat 640. A slide 682 is mounted on the piston rod of the seventh hydraulic cylinder 681. A slide groove 683 is provided on the rotary seat 640. The slide 682 is slidably connected to the slide groove 683. A connecting seat 684 is rotatably mounted inside the slide 682. A second rotating shaft 650 is connected to the connecting seat 684.

[0079] The third bending mechanism 600 also includes a flexible support component 690. The flexible support component 690 includes a housing 691 disposed on the fixed mold wheel 630. Two first trapezoidal rods 692 are slidably disposed on the housing 691. Each of the two first trapezoidal rods 692 is provided with an arc-shaped support block 693. The two arc-shaped support blocks 693 are elastically connected to the housing 691 by two springs 694 respectively.

[0080] The fixed mold wheel 630 is also equipped with an eighth hydraulic cylinder 695. The piston rod of the eighth hydraulic cylinder 695 is equipped with a second trapezoidal rod 696, which is matched with the inclined surfaces of the two first trapezoidal rods 692.

[0081] In this embodiment: First, during the process of the metal sheet 100 passing through the fixed mold wheel 630 and the moving mold wheel 660 to perform the second bending mechanism 500, the seventh hydraulic cylinder 681 controls the slide block 682 to move relatively backward, causing the moving mold wheel 660 to move away from the metal sheet 100. At this time, the moving mold wheel 660 does not clamp the metal sheet 100 and will not affect the normal sliding of the metal sheet 100. Furthermore, the two arc-shaped support blocks 693 are also kept constricted under the elastic force of the two springs 694, and do not squeeze the inner wall of the metal sheet 100.

[0082] After the second bending mechanism 500 completes the sealing of the metal sheet 100, the metal sheet 100 is moved back to the left by several conveying rollers 400. Then, the seventh hydraulic cylinder 681 pushes the slide block 682 to slide forward along the slide groove 683, so that the moving mold wheel 660 presses against the rear end of the metal sheet 100. Then, the sixth hydraulic cylinder 673 and the second motor 671 work together. The sixth hydraulic cylinder 673 pushes the rack 674 to the right, driving the gear 676 and the fixed mold wheel 630 to rotate in place, so that the outer edge of the fixed mold wheel 630 cooperates with the moving mold wheel 660, which is making circular motion, to perform arc bending on the metal sheet 100.

[0083] The second motor 671 drives the third rotating shaft 672 to rotate, which in turn drives the rotating seat 640 to rotate, causing the moving mold wheel 660 to make circular motion around the first rotating shaft 620.

[0084] During the bending process described above, since the housing 691 is installed on the inner wall of the fixed mold wheel 630 and the eighth hydraulic cylinder 695 is installed on the fixed mold wheel 630, the flexible support assembly 690 is stationary relative to the fixed mold wheel 630.

[0085] The eighth hydraulic cylinder 695 drives the second trapezoidal rod 696 to move downward, so that the second trapezoidal rod 696 pushes the two first trapezoidal rods 692 to both sides, thereby causing the two arc-shaped support blocks 693 to be squeezed into the inner cavity of the metal plate 100, forming a flexible support to keep the inner cavity of the metal plate 100 from deforming.

[0086] After bending is completed, the second trapezoidal rod 696 is moved upward by the eighth hydraulic cylinder 695, which can quickly release the pressure of the arc support block 693 on the inner cavity of the metal plate 100, thereby improving processing efficiency.

[0087] Then, by using several conveyor rollers 400 to continue driving the sliding door guide rail 110, which has been processed and formed at this time, to move to the right, the sliding door guide rail 110 can be removed.

[0088] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0089] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A metal material bending device for automobile sliding door guide rails, used for bending metal sheets (100), characterized in that: The metal sheet (100) includes two first bending segments (120) and two second bending segments (130) symmetrical about the central axis of the metal sheet (100), and the metal sheet (100) also includes a third bending segment (140) and a fourth bending segment (150). The metal material bending device for the car sliding door guide rail includes a workbench (200), on which a first bending mechanism (300) and a second bending mechanism (500) are sequentially arranged. The first bending mechanism (300) is used to bend the two first bending segments (120) and the two second bending segments (130) by 90° in sequence to form a square shape. The second bending mechanism (500) is used to bend the third bending segment (140) and the fourth bending segment (150) by 90° in sequence to form a Z shape. The workbench (200) is also provided with a third bending mechanism (600), which is located between the first bending mechanism (300) and the second bending mechanism (500). The third bending mechanism (600) is used to bend the end of the metal plate (100) into an arc shape, and finally process the metal plate (100) into a sliding door guide rail (110). The second bending mechanism (500) includes a second housing (510) and a fourth hydraulic cylinder (520) disposed on the worktable (200). The second housing (510) fits into the inner cavity of the metal plate (100) which is shaped like an opening, and the second housing (510) is L-shaped. The piston rod of the fourth hydraulic cylinder (520) is provided with a pressure mold (530), and a swing block (540) is rotatably provided on the pressure mold (530). The swing block (540) has a right-angle notch. The pressure mold (530) is also provided with a first motor (550), and the output shaft of the first motor (550) is connected to the swing block (540). When the swing block (540) is in a state perpendicular to the diagonal of its right-angle notch, the fourth hydraulic cylinder (520) drives the swing block (540) to bend the third bending segment (140) toward the vertical side of the second housing (510), while the first motor (550) drives the swing block (540) to rotate 45° to bend the fourth bending segment (150) toward the horizontal side of the second housing (510), thereby bending the metal plate (100), the third bending segment (140) and the fourth bending segment (150) into a Z shape; The metal sheet (100) further includes two fastening sections (160) and two fastening grooves (170) that are symmetrical about the central axis of the metal sheet (100). After the third bending segment (140) and the fourth bending segment (150) are bent in a Z-shape, the two fastening segments (160) are bent at 90° to fit into the two fastening grooves (170); The second bending mechanism (500) also includes two fifth hydraulic cylinders (560) symmetrically arranged on the worktable (200). Each of the piston rods of the two fifth hydraulic cylinders (560) is provided with a third pressure plate (570). The two fifth hydraulic cylinders (560) drive the two third pressure plates (570) to bend the two fastening sections (160) by 90°.

2. The metal material bending device for automobile sliding door guide rails according to claim 1, characterized in that: The first bending mechanism (300) includes a first housing (310) and a first hydraulic cylinder (320) disposed on the worktable (200). The first housing (310) is U-shaped, and a first pressure plate (330) is disposed on the piston rod of the first hydraulic cylinder (320). The first pressure plate (330) is convex and fits with the first housing (310). Two second hydraulic cylinders (340) are symmetrically arranged on the worktable (200), and a second pressure plate (350) is provided on the piston rod of each of the two second hydraulic cylinders (340). After aligning the central axis of the metal plate (100) with the central axis of the first housing (310), the first pressure plate (330) is driven by the first hydraulic cylinder (320) to bend the metal plate (100) by bending the two first bending segments (120) by 90°. Then, the two second hydraulic cylinders (340) are driven by the two second pressure plates (350) to bend the two second bending segments (130) by 90° respectively.

3. The metal material bending device for automobile sliding door guide rails according to claim 2, characterized in that: The first bending mechanism (300) further includes a third hydraulic cylinder (360) disposed on the worktable (200), and a push rod (370) is disposed on the piston rod of the third hydraulic cylinder (360), and the push rod (370) fits into the inner cavity of the first housing (310); The workbench (200) is also symmetrically provided with several conveying rollers (400). The push rod (370) is driven by the third hydraulic cylinder (360) to convey the metal plate (100) bent into an apex shape to the several conveying rollers (400).

4. The metal material bending device for automobile sliding door guide rails according to claim 1, characterized in that: The third bending mechanism (600) includes a mounting base (610) disposed on the worktable (200), a first rotating shaft (620) is rotatably disposed on the mounting base (610), and a fixed mold wheel (630) is disposed on the first rotating shaft (620). A rotating seat (640) is rotatably mounted on the first rotating shaft (620), a second rotating shaft (650) is mounted on the rotating seat (640), and a moving mold wheel (660) is mounted on the second rotating shaft (650). The third bending mechanism (600) further includes a drive assembly (670). When the metal sheet (100) is fitted between the fixed mold wheel (630) and the moving mold wheel (660), the drive assembly (670) drives the fixed mold wheel (630) to rotate and simultaneously drives the moving mold wheel (660) to make a circular motion based on the first rotating shaft (620), thereby bending the metal sheet (100) into an arc shape.

5. A metal material bending device for automobile sliding door guide rails according to claim 4, characterized in that: The drive assembly (670) includes a second motor (671) disposed on the worktable (200), a third rotating shaft (672) disposed on the output shaft of the second motor (671), and the rotating seat (640) is connected to the third rotating shaft (672); The workbench (200) is also provided with a sixth hydraulic cylinder (673) and a support base (675). The piston rod of the sixth hydraulic cylinder (673) is provided with a rack (674), which is slidably connected to the support base (675). The first rotating shaft (620) is provided with a gear (676), which meshes with the rack (674).

6. A metal material bending device for automobile sliding door guide rails according to claim 4, characterized in that: The third bending mechanism (600) further includes an adjustment component (680), which is used to control the radius of the circular motion of the moving mold wheel (660); The adjusting assembly (680) includes a seventh hydraulic cylinder (681) disposed on the rotating seat (640). A slide (682) is disposed on the piston rod of the seventh hydraulic cylinder (681). A slide groove (683) is provided on the rotating seat (640). The slide (682) is slidably connected in the slide groove (683). A connecting seat (684) is rotatably disposed in the slide (682). The second rotating shaft (650) is connected to the connecting seat (684).

7. A metal material bending device for automobile sliding door guide rails according to claim 4, characterized in that: The third bending mechanism (600) further includes a flexible support assembly (690), which includes a housing (691) disposed on the fixed mold wheel (630). Two first trapezoidal rods (692) are slidably disposed on the housing (691), and each of the two first trapezoidal rods (692) is provided with an arc-shaped support block (693). The two arc-shaped support blocks (693) are elastically connected to the housing (691) by two springs (694). The fixed mold wheel (630) is also provided with an eighth hydraulic cylinder (695), and the piston rod of the eighth hydraulic cylinder (695) is provided with a second trapezoidal rod (696), which is engaged with the inclined surfaces of the two first trapezoidal rods (692).

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