Bending equipment for automobile decoration strip

Abstract

The utility model discloses bending equipment for an automobile decorative strip, which belongs to the technical field of automobile part forming, and comprises a rack and a machine table arranged on the rack and used for placing an outer decorative strip, two bending assemblies with the same structure are symmetrically arranged on the rack on two sides of the machine table, and each bending assembly comprises a moving mechanism and a swinging mechanism; the moving mechanism comprises a moving base arranged on the rack and a rotary table arranged on the moving base, and the mounting end of the rotary table is rotatably arranged on the moving base through a pivotal bearing; a mounting frame is arranged on the upper end face of the rotary table, a through hole is formed in the mounting frame in the vertical direction, a movable frame is arranged on the end face, opposite to the through hole, of the mounting frame, the swing mechanism is arranged in the movable frame and comprises a swing frame, and a swing arm body is arranged in the swing frame; a hydraulic chuck is arranged at the end of the swing arm body located on the machine table side. According to the utility model, the movement mode of XY movement and overall rotation is converted from the traditional mechanical cam operation mode.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts forming technology, and in particular relates to a bending device for automotive trim strips. Background Technology

[0002] In the bending production process of automobile frames, trim strips, and luggage racks, bending devices are used to bend long strip-shaped workpieces into their final shape. Each free end of the bending device is equipped with a clamping device. During operation, the clamping devices clamp both ends of the workpiece, the forming mold is placed close to the middle of the workpiece, and two rotating arms rotate towards the base, bending the workpiece into shape. Traditional mechanical cam-based bending methods suffer from low production efficiency, slow bending speed, poor dimensional uniformity, wear and tear on the cams over long periods of operation, difficulty in meeting customer needs, and high maintenance costs. Summary of the Invention

[0003] To address the problems existing in the prior art, this utility model provides a bending device for automotive trim strips, realizing a transformation from the traditional mechanical cam operation to a motion mode combining XY movement and overall rotation. It has the advantages of high mechanical transmission efficiency, smoother transmission, and lower losses compared to traditional methods.

[0004] This utility model is implemented as follows: a bending device for automotive trim strips includes a frame and a platform for placing the outer trim strip on the frame. The device is characterized in that two bending assemblies with identical structures are symmetrically arranged on the frame on both sides of the platform. The bending assembly includes a moving mechanism and a swinging mechanism.

[0005] The moving mechanism includes a movable base mounted on a frame and a turntable mounted on the movable base;

[0006] The upper end face of the turntable is provided with a mounting frame, and the mounting frame has a through hole in the vertical direction. A movable frame that can move in the vertical direction is provided on the end face of the mounting frame opposite to the through hole. The swing mechanism is provided in the movable frame. The swing mechanism includes a swing frame that can swing longitudinally and is provided in the movable frame. A swing arm that can swing laterally is provided in the swing frame. The swing arm extends horizontally through the through hole and toward the machine platform side.

[0007] A hydraulic chuck is installed at the end of the swing arm located on the side of the machine.

[0008] Furthermore, the length direction of the movable base is perpendicular to the length direction of the frame, and the upper end surface of the movable base is provided with a second guide rail pair arranged along the length direction of the movable base, and the lower end surface of the turntable is mounted on the slider of the second guide rail pair.

[0009] The upper surface of the movable base is provided with a third servo motor and a second ball screw pair arranged along the length direction of the movable base. The output shaft of the third servo motor is connected to the screw in the second ball screw pair, and the nut of the second ball screw pair is connected to the lower surface of the turntable.

[0010] Furthermore, the turntable includes an upper support plate, a lower support plate, and a rotary support disposed between the upper support plate and the lower support plate. A gear ring is disposed on the outer edge of the rotary support. A second servo motor is disposed on the upper support plate. A gear that meshes with the gear ring is disposed on the output shaft of the second servo motor. The mounting bracket is disposed on the upper support plate.

[0011] Furthermore, the swing arm body includes a first swing arm frame and a second swing arm frame disposed within the first swing arm frame. A sixth guide rail pair is provided on the inner wall of the first swing arm frame. The second swing arm frame is disposed on the slider of the sixth guide rail pair. A sixth ball screw pair is provided along the length direction of the swing arm body within both the first and second swing arm frames. A seventh servo motor is provided at the end of the first swing arm frame. The output shaft of the seventh servo motor is connected to the lead screw in the sixth ball screw pair. The nut of the sixth ball screw pair is connected to the second swing arm frame. The first and second swing arm frames enable the extension and retraction of the swing arm body along its length, making it suitable for various working conditions.

[0012] Furthermore, the hydraulic chuck is mounted at the end of the swing arm via an electric turntable, enabling the hydraulic chuck to rotate and meet the working requirements of bending operations.

[0013] Furthermore, the horizontal sides of the swing frame are provided within the movable frame via horizontal rotating shafts. A support frame is provided on the movable frame, and a fifth servo motor and a fourth guide rail pair arranged vertically are provided on the support frame. A first hinge block is provided on the slider of the fourth guide rail pair, and the first hinge block is hinged to the upper end face of the swing frame via a first hinge. A fourth ball screw pair is provided through the first hinge block in the vertical direction, and the nut of the fourth ball screw pair is connected to the first hinge block. The output shaft of the fifth servo motor is connected to the screw in the fourth ball screw pair.

[0014] Furthermore, the vertical ends of the swing arm are mounted within the swing frame via vertical pivots. A sixth servo motor and a fifth guide rail pair are mounted on the swing arm away from the hydraulic chuck mounting side. A second hinge block is mounted on the slider of the fifth guide rail pair, and the second hinge block is hinged to the side wall of the swing frame via a second hinge. A fifth ball screw pair is horizontally threaded through the second hinge block, and the nut of the fifth ball screw pair is connected to the second hinge block. The output shaft of the sixth servo motor is connected to the screw in the fifth ball screw pair.

[0015] Furthermore, a first guide rail pair is provided on the upper end face of the frame along the horizontal direction of the frame, and the movable base is mounted on the slider of the first guide rail pair. A first servo motor and a first ball screw pair arranged along the horizontal direction of the frame are provided inside the frame. The output shaft of the first servo motor is connected to the screw in the first ball screw pair, and the nut of the first ball screw pair is connected to the lower end face of the movable base.

[0016] Furthermore, a third guide rail pair is provided on the end face of the mounting bracket, the movable frame is disposed on the slider of the third guide rail pair, a third ball screw pair is provided on the mounting bracket in the vertical direction, the screw in the third ball screw pair is connected to the movable frame, and a fourth servo motor for driving the nut in the third ball screw pair to rotate is provided on the mounting bracket.

[0017] The advantages and technical effects of this utility model are as follows: By adopting the above technical solution, the motion mode of XY movement and overall rotation is transformed from the traditional mechanical cam operation mode. It has the advantages of high mechanical transmission efficiency, smoother transmission, and lower losses compared to traditional methods.

[0018] By using guide rails and lead screw mechanisms distributed on the overall frame for right-hand XY motion, the XY coordinated motion completes the circular motion around the machine tool, reducing equipment manufacturing and maintenance costs.

[0019] The original XY-plane rotation mechanism was changed to a whole-plane rotation mechanism, which reduced manufacturing and maintenance costs. Furthermore, the increased axial tension allows for better shaping in the final bending stage. Without the tension axis, the X and Y axes move together, which can affect the final curved surface. With axial tension, the X and Y axes do not need to move to achieve final shaping. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure provided in an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of the moving mechanism structure provided in an embodiment of the present utility model;

[0022] Figure 3 This is an installation diagram of the turntable, mounting bracket, and swing mechanism provided in this embodiment of the utility model;

[0023] Figure 4 This is a schematic diagram of the swing mechanism structure provided in an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the swing arm structure provided in an embodiment of the present invention.

[0025] In the diagram: 1. Frame; 2. Machine base; 3. Moving mechanism; 3-1. Moving base; 3-2. Turntable; 3-3. Rotary support; 3-4. First guide rail pair; 3-5. First servo motor; 3-6. First ball screw pair; 3-7. Second guide rail pair; 3-8. Gear ring; 3-9. Second servo motor; 3-10. Gear; 3-11. Third servo motor; 3-12. Second ball screw pair; 3-13. Upper support plate; 3-14. Lower support plate; 4. Swing mechanism; 4-1. Swing frame; 4-2. Support frame; 4-3. Fifth servo motor; 4-4. Fourth guide rail pair; 4-5. First hinge 4-6, First hinge; 4-7, Fourth ball screw pair; 4-8, Swing arm body; 4-9, Sixth servo motor; 4-10, Fifth guide rail pair; 4-11, Second hinge block; 4-12, Second hinge; 4-13, Fifth ball screw pair; 4-14, First swing arm frame; 4-15, Second swing arm frame; 4-16, Sixth guide rail pair; 4-17, Sixth ball screw pair; 4-18, Seventh servo motor; 5, Mounting bracket; 5-1, Through hole; 6, Moving frame; 7, Hydraulic chuck; 8, Third ball screw pair; 9, Fourth servo motor; 10, Third guide rail pair; 11, Electric turntable. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0027] It should be noted that the terms "upper", "lower", "left", "right", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] like Figures 1 to 5 As shown, this application provides a bending device for automotive trim strips, including a frame 1 and a platform 2 mounted on the frame 1 for placing the exterior trim strip. Two bending assemblies with identical structures are symmetrically arranged on the frame 1 on both sides of the platform 2. The bending assembly includes a moving mechanism 3 and a swinging mechanism 4.

[0029] The moving mechanism 3 includes a moving base 3-1 mounted on the frame 1 and a turntable 3-2 mounted on the moving base 3-1.

[0030] The upper end face of the frame 1 is provided with a first guide rail pair 3-4 along the horizontal direction of the frame 1. The movable base 3-1 is mounted on the slider of the first guide rail pair 3-4. The frame 1 is provided with a first servo motor 3-5 and a first ball screw pair 3-6 arranged along the horizontal direction of the frame 1. The output shaft of the first servo motor 3-5 is connected to the screw in the first ball screw pair 3-6. The nut of the first ball screw pair 3-6 is connected to the lower end face of the movable base 3-1. By driving the first servo motor 3-5 to rotate the screw in the first ball screw pair 3-6, the movable base 3-1 can reciprocate along the first guide rail pair 3-4 under the drive of the nut of the first ball screw pair 3-6, realizing the movement of the bending assembly towards the machine platform 2.

[0031] The length direction of the movable base 3-1 is perpendicular to the length direction of the frame. The upper end face of the movable base 3-1 is provided with a second guide rail pair 3-7 arranged along the length direction of the movable base 3-1. The lower end face of the turntable is mounted on the slider of the second guide rail pair 3-7. The upper end face of the movable base 3-1 is provided with a third servo motor 3-11 and a second ball screw pair 3-12 arranged along the length direction of the movable base 3-1. The output shaft of the third servo motor 3-11 is connected to the screw in the second ball screw pair 3-12. The nut of the second ball screw pair 3-12 is connected to the lower end face of the turntable.

[0032] The turntable includes an upper support plate 3-13, a lower support plate 3-14, and a rotary support 3-3 disposed between the upper and lower support plates. A gear ring 3-8 is disposed on the outer edge of the rotary support 3-3. A second servo motor 3-9 is disposed on the upper support plate. A gear 3-10 that meshes with the gear ring is disposed on the output shaft of the second servo motor 3-9. The mounting bracket is disposed on the upper support plate 3-1.

[0033] The upper end face of the turntable 3-2 is provided with a mounting frame 5. The mounting frame 5 has a through hole 5-1 in the vertical direction. A movable frame 6 that can move in the vertical direction is provided on the end face of the mounting frame 5 opposite to the through hole 5-1. Specifically, a third guide rail pair 10 is provided on the end face of the mounting frame 5. The movable frame 6 is provided on the slider of the third guide rail pair 10. A third ball screw pair 8 is provided on the mounting frame 5 in the vertical direction. The screw in the third ball screw pair 8 is connected to the movable frame 6. A fourth servo motor 9 is provided on the mounting frame 5 for driving the nut in the third ball screw pair 8 to rotate. A pulley group is provided on the output shaft of the fourth servo motor 9. The output shaft of the fourth servo motor 9 is connected to the driving pulley of the pulley group. The nut in the third ball screw pair 8 is located in the driven pulley of the pulley group.

[0034] The swing mechanism 4 is disposed within the movable frame 6. The swing mechanism 4 includes a swing frame 4-1 disposed within the movable frame 6 and capable of swinging longitudinally. Specifically, the horizontal sides of the swing frame 4-1 are disposed within the movable frame 6 via horizontal rotating shafts. A support frame 4-2 is disposed on the movable frame 6. A fifth servo motor 4-3 and a fourth guide rail pair 4-4 disposed vertically are disposed on the support frame 4-2. A first hinge block 4-5 is disposed on the slider of the fourth guide rail pair 4-4. The first hinge block 4-5 is hinged to the upper end face of the swing frame 4-1 via a first hinge 4-6. A fourth ball screw pair 4-7 is disposed vertically through the first hinge block 4-5. The nut of the fourth ball screw pair 4-7 is connected to the first hinge block 4-5. The output shaft of the fifth servo motor 4-3 is connected to the screw in the fourth ball screw pair 4-7. The fifth servo motor 4-3 is driven to rotate the screw in the fourth ball screw pair 4-7. The nut of the fourth ball screw pair 4-7 drives the first hinge block 4-5 to move linearly on the fourth guide rail pair 4-4. Then, under the drive of the first hinge 4-6, the swing frame 4-1 swings longitudinally around the horizontal axis.

[0035] The swing frame 4-1 is equipped with a swing arm 4-8 that can swing laterally. Specifically, the vertical ends of the swing arm 4-8 are set in the swing frame 4-1 through vertical pivots. The swing arm 4-8 away from the mounting side of the hydraulic chuck 7 is equipped with a sixth servo motor 4-9 and a fifth guide rail pair 4-10 arranged along the length of the swing arm 4-8. The slider of the fifth guide rail pair 4-10 is equipped with a second hinge block 4-11. The second hinge block 4-11 is hinged to the side wall of the swing frame 4-1 through a second hinge 4-12. A fifth ball screw pair 4-13 is arranged horizontally through the second hinge block 4-11. The nut of the fifth ball screw pair 4-13 is connected to the second hinge block 4-11. The output shaft of the sixth servo motor 4-9 is connected to the screw in the ball screw pair. The sixth servo motor 4-9 drives the screw in the fifth ball screw pair 4-13 to rotate. The nut of the fifth ball screw pair 4-13 drives the second hinge block 4-11 to move linearly on the fifth guide rail pair 4-10. Then, under the drive of the second hinge 4-12, the swing arm 4-8 swings laterally around the vertical axis.

[0036] The swing arm 4-8 extends horizontally through the through hole 5-1 and toward the machine platform 2; a hydraulic chuck 7 is provided at the end of the swing arm 4-8 located on the machine platform 2. Preferably, the hydraulic chuck 7 is provided at the end of the swing arm 4-8 via an electric turntable 11, which can realize the rotation action of the hydraulic chuck 7 and meet the working requirements of bending operation.

[0037] The swing arm body 4-8 includes a first swing arm frame 4-14 and a second swing arm frame 4-15 disposed within the first swing arm frame 4-14. A sixth guide rail pair 4-16 is provided on the inner wall of the first swing arm frame 4-14. The second swing arm frame 4-15 is disposed on the slider of the sixth guide rail pair 4-16. A sixth ball screw pair 4-17 is provided along the length direction of the swing arm body 4-8 within both the first and second swing arm frames. A seventh servo motor 4-18 is provided at the end of the first swing arm frame 4-14. The output shaft of the seventh servo motor 4-18 is connected to the screw in the sixth ball screw pair 4-17. The nut of the sixth ball screw pair 4-17 is connected to the second swing arm frame 4-15. The first swing arm frame 4-14 and the second swing arm frame 4-15 enable the extension and retraction of the swing arm body 4-8 along its length, making it suitable for various working conditions.

[0038] By adopting the above technical solution, the motion mode of XY translation and overall rotation, which is transformed from the traditional mechanical cam operation, is realized. It has the advantages of high mechanical transmission efficiency, smoother transmission, and less loss than the traditional method.

[0039] By using guide rails and lead screw mechanisms distributed on the overall frame for right-hand XY motion, the XY coordinated motion completes the circular motion around the machine tool, reducing equipment manufacturing and maintenance costs.

[0040] The original XY-plane rotation mechanism was changed to a whole-plane rotation mechanism, which reduced manufacturing and maintenance costs. Furthermore, the increased axial tension allows for better shaping in the final bending stage. Without the tension axis, the X and Y axes move together, which can affect the final curved surface. With axial tension, the X and Y axes do not need to move to achieve final shaping.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bending device for automotive trim strips, comprising a frame and a worktable mounted on the frame for placing the exterior trim strip, characterized in that, Two identical bending assemblies are symmetrically arranged on the frames located on both sides of the machine base. The bending assembly includes a moving mechanism and a swinging mechanism. The moving mechanism includes a movable base mounted on a frame and a turntable mounted on the movable base; The upper end face of the turntable is provided with a mounting frame, and the mounting frame has a through hole in the vertical direction. A movable frame that can move in the vertical direction is provided on the end face of the mounting frame opposite to the through hole. The swing mechanism is provided in the movable frame. The swing mechanism includes a swing frame that can swing longitudinally and is provided in the movable frame. A swing arm that can swing laterally is provided in the swing frame. The swing arm extends horizontally through the through hole and toward the machine platform side. A hydraulic chuck is installed at the end of the swing arm located on the side of the machine platform; The length direction of the movable base is perpendicular to the length direction of the frame. The upper end surface of the movable base is provided with a second guide rail pair arranged along the length direction of the movable base. The lower end surface of the turntable is mounted on the slider of the second guide rail pair. The upper surface of the movable base is provided with a third servo motor and a second ball screw pair arranged along the length direction of the movable base. The output shaft of the third servo motor is connected to the screw in the second ball screw pair, and the nut of the second ball screw pair is connected to the lower surface of the turntable.

2. The bending device for automotive trim strips according to claim 1, characterized in that, The turntable includes an upper support plate, a lower support plate, and a rotary support disposed between the upper and lower support plates. A gear ring is provided on the outer edge of the rotary support. A second servo motor is provided on the upper support plate. A gear that meshes with the gear ring is provided on the output shaft of the second servo motor. The mounting bracket is disposed on the upper support plate.

3. The bending device for automotive trim strips according to claim 1, characterized in that, The swing arm body includes a first swing arm frame and a second swing arm frame disposed within the first swing arm frame. A sixth guide rail pair is provided on the inner wall of the first swing arm frame. The second swing arm frame is disposed on the slider of the sixth guide rail pair. A sixth ball screw pair is provided along the length direction of the swing arm body within the first and second swing arm frames. A seventh servo motor is provided at the end of the first swing arm frame. The output shaft of the seventh servo motor is connected to the screw in the sixth ball screw pair. The nut of the sixth ball screw pair is connected to the second swing arm frame.

4. The bending device for automotive trim strips according to claim 1, characterized in that, The hydraulic chuck is mounted at the end of the swing arm via an electric turntable.

5. The bending device for automotive trim strips according to claim 1, characterized in that, The horizontal sides of the swing frame are mounted on a movable frame via horizontal pivots. A support frame is mounted on the movable frame, and a fifth servo motor and a fourth guide rail pair arranged vertically are mounted on the support frame. A first hinge block is mounted on the slider of the fourth guide rail pair, and the first hinge block is hinged to the upper end face of the swing frame via a first hinge. A fourth ball screw pair is vertically threaded through the first hinge block, and the nut of the fourth ball screw pair is connected to the first hinge block. The output shaft of the fifth servo motor is connected to the screw in the fourth ball screw pair.

6. The bending device for automotive trim strips according to claim 1, characterized in that, The vertical ends of the swing arm are mounted within the swing frame via vertical pivots. A sixth servo motor and a fifth guide rail pair are mounted on the swing arm away from the hydraulic chuck mounting side. A second hinge block is mounted on the slider of the fifth guide rail pair, and the second hinge block is hinged to the side wall of the swing frame via a second hinge. A fifth ball screw pair is horizontally mounted on the second hinge block, and the nut of the fifth ball screw pair is connected to the second hinge block. The output shaft of the sixth servo motor is connected to the screw in the fifth ball screw pair.

7. The bending device for automotive trim strips according to claim 1, characterized in that, The upper end face of the frame is provided with a first guide rail pair along the horizontal direction of the frame. The movable base is mounted on the slider of the first guide rail pair. The frame is provided with a first servo motor and a first ball screw pair along the horizontal direction of the frame. The output shaft of the first servo motor is connected to the screw in the first ball screw pair. The nut of the first ball screw pair is connected to the lower end face of the movable base.

8. The bending device for automotive trim strips according to claim 1, characterized in that, A third guide rail pair is provided on the end face of the mounting bracket, the movable frame is provided on the slider of the third guide rail pair, a third ball screw pair is provided on the mounting bracket in the vertical direction, the screw in the third ball screw pair is connected to the movable frame, and a fourth servo motor is provided on the mounting bracket for driving the nut in the third ball screw pair to rotate.

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