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 rotary table base arranged on the rack and a rotary table arranged on the rotary table base, and the mounting end of the rotary table is rotatably arranged on the rotary table 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. A traditional motion mode is changed into a rotary numerical control bending operation mode, and the rotary numerical control bending machine has the advantage of being high in transmission efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile component forming, and in particular relates to a bending device for automobile trim strips. Background Art

[0002] In the bending production process of automobile frames, bright strips and luggage racks, the bending device is used to bend the long strip workpiece into shape, and the free end of the bending device is equipped with a clamping device. When working, the clamping device clamps the two ends of the workpiece respectively, the forming mold is close to the middle of the workpiece, and the two rotating arms rotate in the direction of approaching the base to bend the workpiece into shape. The existing bending equipment has low mechanical efficiency, slow bending speed, poor dimensional uniformity, and the cam size changes due to wear after long-term operation. The products produced by the XY method have poor stability, are difficult to meet customer needs, and have high subsequent maintenance costs. Summary of the invention

[0003] In view of the problems existing in the prior art, the utility model provides a bending device for automobile trim strips, which realizes the transformation from the traditional mechanical cam operation mode and XY motion mode to the rotary CNC bending operation mode. It has the advantages of high mechanical transmission efficiency, smoother transmission and less loss than the traditional one.

[0004] The utility model is implemented as follows: a bending device for automobile exterior trim strips comprises a frame and a machine platform arranged on the frame for placing the exterior trim strips, two bending assemblies with the same structure are symmetrically arranged on the frame located on both sides of the machine platform, and the bending assembly comprises a moving mechanism and a swinging mechanism;

[0005] The moving mechanism comprises a turntable base arranged on the frame and a turntable arranged on the turntable base, wherein the mounting end of the turntable is rotatably arranged on the turntable base through a slewing bearing;

[0006] The upper end surface of the turntable is provided with a mounting frame, a through hole is provided on the mounting frame in the vertical direction, a movable frame movable in the vertical direction is provided on the end surface 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 provided in the movable frame and capable of longitudinal swinging, a swing arm body capable of transverse swinging is provided in the swing frame, the swing arm body passes through the through hole in the horizontal direction and extends to the side of the machine platform;

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

[0008] Furthermore, an obliquely movable guide plate is provided on the upper end surface of the turntable base, and an angle between the axis of the obliquely movable guide plate and the axis of the turntable is set at an acute angle;

[0009] A second guide rail pair is provided on the obliquely moving guide plate. A pushing plate is provided on the slider of the second guide rail pair. A guide post is provided on the upper end surface of the pushing plate. An installation groove is provided in the turntable along the length direction of the turntable. The guide post is arranged in the installation groove and can move along the installation groove.

[0010] An obliquely moving ball screw pair is provided on the obliquely moving guide plate along the axial direction. The nut of the obliquely moving ball screw pair is connected to the pushing plate. A second servo motor connected to the screw in the obliquely moving ball screw pair is provided on the obliquely moving guide plate. By driving the obliquely moving ball screw pair with the second servo motor, the pushing plate drives the turntable to move in an oblique straight line, thereby driving the swing arm to move. The servo motor has high-precision positioning and control capabilities, which can ensure the accuracy and stability of the oblique movement. The ball screw pair, with its high efficiency and low friction characteristics, further enhances the accuracy of motion control; expands the motion range of the swing mechanism, and also enables the entire system to adapt to more complex motion requirements; it can also maintain stable motion performance under high-speed or high-load conditions.

[0011] Further, the swing arm body includes a first swing arm frame and a second swing arm frame arranged inside the first swing arm frame. A seventh guide rail pair is provided on the inner wall of the first swing arm frame. The second swing arm frame is arranged on the slider of the seventh guide rail pair. A sixth ball screw pair is provided in the first swing arm frame and the second swing arm frame along the length direction of the swing arm body. 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. The first swing arm frame and the second swing arm frame realize the telescoping of the swing arm body in the length direction and can be applicable to various working conditions.

[0012] Further, the hydraulic chuck is arranged at the end of the swing arm body through an electric turntable, which can realize the rotation action of the hydraulic chuck and meet the working requirements of the stretch bending operation.

[0013] Further, the horizontal sides of the swing frame are arranged in the moving frame through horizontal rotating shafts. A support frame is provided on the moving frame. A fifth servo motor and a fifth guide rail pair arranged vertically are provided on the support frame. A first hinge block is provided on the slider of the fifth guide rail pair. The first hinge block is hinged to the upper end surface of the swing frame through a first hinge; a fourth ball screw pair is arranged vertically through the first hinge block. 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] Further, the vertical ends of the swing arm body are arranged in the swing frame through a vertical rotating shaft. A sixth servo motor and a sixth guide rail pair arranged along the length direction of the swing arm body are provided on the swing arm body away from the hydraulic chuck installation side. A second hinge block is provided on the slider of the sixth guide rail pair, and the second hinge block is hinged to the side wall of the swing frame through a second hinge; a fifth ball screw pair is arranged horizontally through the second hinge block, the nut of the fifth ball screw pair is connected to the second hinge block, and the output shaft of the sixth servo motor is connected to the screw in the ball screw pair.

[0015] Further, a first guide rail pair is arranged along the horizontal direction of the frame on the upper end surface of the frame. The turntable base is installed 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 in 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 surface of the turntable base.

[0016] Further, a third guide rail pair is arranged along the horizontal direction of the turntable on the upper end surface of the turntable. The lower end surface of the mounting frame is installed on the slider of the third guide rail pair. A third servo motor and a second ball screw pair arranged along the horizontal direction of the turntable are provided in the turntable. 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 end surface of the mounting frame.

[0017] Further, a fourth guide rail pair is arranged on the end surface of the mounting frame. The moving frame is arranged on the slider of the fourth guide rail pair. A third ball screw pair arranged along the vertical direction is provided on the mounting frame. The screw in the third ball screw pair is connected to the moving frame, and a fourth servo motor for driving the nut in the third ball screw pair to rotate is provided on the mounting frame.

[0018] The advantages and technical effects of the present utility model: Due to the adoption of the above technical solution, it realizes the transformation from the traditional mechanical cam operation mode and the XY movement mode to the rotary numerical control bending operation mode. It has the advantages of high mechanical transmission efficiency, smoother transmission, and smaller loss than the traditional one. Description of the Drawings

[0019] Figure 1 is the overall structural schematic diagram provided by the embodiment of the present utility model;

[0020] Figure 2 is the structural schematic diagram of the moving mechanism provided by the embodiment of the present utility model;

[0021] Figure 3 is the installation schematic diagram of the turntable, the mounting frame and the swing mechanism provided by the embodiment of the present utility model;

[0022] Figure 4 It is a schematic structural diagram of a swing mechanism provided by an embodiment of the present utility model;

[0023] Figure 5 It is a schematic structural diagram of a swing arm body provided by an embodiment of the present utility model.

[0024] In the figure: 1, frame; 2, machine table; 3, moving mechanism; 3-1, turntable base; 3-2, turntable; 3-3, slewing bearing; 3-4, first guide pair; 3-5, first servo motor; 3-6, first ball screw pair; 3-7, second guide pair; 3-8, oblique movement guide plate; 3-9, second servo motor; 3-10, pushing plate; 3-11, guide post; 3-12, oblique movement ball screw pair; 3-13, third guide pair; 3-14, third servo motor; 3-15, second ball screw pair; 4, swing mechanism; 4-1, swing frame; 4-2, support frame; 4-3, fifth servo motor; 4-4, fifth guide pair; 4-5, first hinge block; 4-6, first hinge; 4-7, fourth ball screw pair; 4-8, swing arm body; 4-9, sixth servo motor; 4-10, sixth guide 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, seventh guide 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, fourth guide pair; 11, electric turntable. Specific embodiments

[0025] In order to make the objectives, technical solutions and advantages of the present utility model more clear and understandable, the present utility model will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0026] It should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0027] Such as Figures 1 to 5As shown in the figure, the present application provides a bending device for automotive trim strips, including a frame 1 and a table 2 disposed on the frame 1 for placing exterior trim strips. Two bending assemblies with the same structure are symmetrically arranged on the frame 1 on both sides of the table 2. The bending assembly includes a moving mechanism 3 and a swinging mechanism 4.

[0028] The moving mechanism 3 includes a turntable base 3-1 disposed on the frame 1 and a turntable 3-2 disposed on the turntable base 3-1. The mounting end of the turntable 3-2 is rotatably disposed on the turntable base 3-1 through a slewing bearing 3-3.

[0029] On the upper end surface of the frame 1, a first guide pair 3-4 is arranged along the horizontal direction of the frame 1. The turntable base 3-1 is mounted on the slider of the first guide pair 3-4. A first servo motor 3-5 and a first ball screw pair 3-6 arranged along the horizontal direction of the frame 1 are disposed inside 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 surface of the turntable base 3-1. By driving the first servo motor 3-5 to drive the screw in the first ball screw pair 3-6 to rotate, under the drive of the nut of the first ball screw pair 3-6, the turntable base 3-1 can reciprocate along the first guide pair 3-4, realizing the movement of the bending assembly towards the table 2.

[0030] An inclined movement guide plate 3-8 is arranged on the upper end surface of the turntable base 3-1. The angle between the axis of the inclined movement guide plate 3-8 and the axis of the turntable 3-2 is set to be an acute angle.

[0031] A second guide pair 3-7 is arranged on the inclined movement guide plate 3-8. A push plate 3-10 is arranged on the slider of the second guide pair 3-7. A guide post 3-11 is arranged on the upper end surface of the push plate 3-10. An installation groove is arranged inside the turntable 3-2 along the length direction of the turntable 3-2. The guide post 3-11 is arranged in the installation groove and can move along the installation groove.

[0032] An inclined movement ball screw pair 3-12 is arranged on the inclined movement guide plate 3-8 along the axis direction. The nut of the inclined movement ball screw pair 3-12 is connected to the push plate 3-10. A second servo motor 3-9 connected to the screw in the inclined movement ball screw pair 3-12 is arranged on the inclined movement guide plate 3-8.

[0033] The diagonal movement ball screw pair is driven by a second servo motor, so that the pushing plate drives the turntable to move in a diagonal straight line, thereby driving the swing arm to move. The servo motor has high-precision positioning and control capabilities, which can ensure the accuracy and stability of the diagonal movement. The ball screw pair, with its high efficiency and low friction characteristics, further enhances the accuracy of motion control; expands the motion range of the swing mechanism, and also enables the entire system to adapt to more complex motion requirements; it can also maintain stable motion performance under high-speed or high-load conditions.

[0034] An installation frame 5 is provided on the upper end surface of the turntable 3-2. Further, a third guide rail pair 3-13 is provided on the upper end surface of the turntable 3-2 along the horizontal direction of the turntable 3-2. The lower end surface of the installation frame 5 is installed on the slider of the third guide rail pair 3-13. A third servo motor 3-14 and a second ball screw pair 3-15 arranged along the horizontal direction of the turntable 3-2 are provided in the turntable 3-2. The output shaft of the third servo motor 3-14 is connected to the screw in the second ball screw pair 3-15. The nut of the second ball screw pair 3-15 is connected to the lower end surface of the installation frame 5.

[0035] A through hole 5-1 is provided in the installation frame 5 along the vertical direction. A movable frame 6 that can move vertically is provided on the end surface of the installation frame 5 opposite to the through hole 5-1. Specifically, a fourth guide rail pair 10 is provided on the end surface of the installation frame 5. The movable frame 6 is arranged on the slider of the fourth guide rail pair 10. A third ball screw pair 8 is provided on the installation frame 5 along the vertical direction. The screw in the third ball screw pair 8 is connected to the movable frame 6. A fourth servo motor 9 for driving the nut in the third ball screw pair 8 to rotate is provided on the installation frame 5. 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 wheel of the pulley group. The nut in the third ball screw pair 8 is arranged inside the driven wheel of the pulley group.

[0036] The swing mechanism 4 is arranged inside the moving frame 6. The swing mechanism 4 includes a swing frame 4-1 arranged inside the moving frame 6 and capable of longitudinal swing. Specifically, the horizontal sides of the swing frame 4-1 are arranged inside the moving frame 6 through a horizontal rotating shaft. A support frame 4-2 is arranged on the moving frame 6. A fifth servo motor 4-3 and a fifth guide rail pair 4-4 arranged in the vertical direction are arranged on the support frame 4-2. A first hinge block 4-5 is arranged on the slider of the fifth guide rail pair 4-4. The first hinge block 4-5 is hinged to the upper end surface of the swing frame 4-1 through a first hinge 4-6. A fourth ball screw pair 4-7 is arranged 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 rod in the fourth ball screw pair 4-7. Driving the fifth servo motor 4-3 drives the screw rod in the fourth ball screw pair 4-7 to rotate. The nut of the fourth ball screw pair 4-7 drives the first hinge block 4-5 to linearly move on the fifth guide rail pair 4-4. Further, driven by the first hinge 4-6, the swing frame 4-1 swings longitudinally around the horizontal rotating shaft.

[0037] A swing arm body 4-8 capable of lateral swing is arranged inside the swing frame 4-1. Specifically, the vertical ends of the swing arm body 4-8 are arranged inside the swing frame 4-1 through a vertical rotating shaft. A sixth servo motor 4-9 and a sixth guide rail pair 4-10 arranged along the length direction of the swing arm body 4-8 are arranged on the swing arm body 4-8 far from the installation side of the hydraulic chuck 7. A second hinge block 4-11 is arranged on the slider of the sixth guide rail pair 4-10. 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 rod in the ball screw pair. Driving the sixth servo motor 4-9 drives the screw rod 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 linearly move on the sixth guide rail pair 4-10. Further, driven by the second hinge 4-12, the swing arm body 4-8 swings laterally around the vertical rotating shaft.

[0038] The swing arm body 4-8 extends horizontally through the through hole 5-1 and extends toward the machine table 2 side. A hydraulic chuck 7 is arranged at the end of the swing arm body 4-8 on the machine table 2 side. Preferably, the hydraulic chuck 7 is arranged at the end of the swing arm body 4-8 through an electric turntable 11, and can realize the rotation action of the hydraulic chuck 7 to meet the working requirements of the stretch bending operation.

[0039] The swing arm body 4-8 includes a first swing arm frame 4-14 and a second swing arm frame 4-15 arranged inside the first swing arm frame 4-14. The inner wall of the first swing arm frame 4-14 is provided with a seventh guide rail pair 4-16. The second swing arm frame 4-15 is arranged on the slider of the seventh guide rail pair 4-16. A sixth ball screw pair 4-17 is arranged along the length direction of the swing arm body 4-8 inside the first swing arm frame 4-14 and the second swing arm frame. The end of the first swing arm frame 4-14 is provided with a seventh servo motor 4-18. 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 realize the telescopic movement in the length direction of the swing arm body 4-8 and can be applicable to various working conditions.

[0040] Due to the adoption of the above technical solution, the traditional mechanical cam operation mode and the XY movement mode are changed into the rotary numerical control bending operation mode. It has the advantages of high mechanical transmission efficiency, smoother transmission and smaller loss than the traditional one.

[0041] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A bending device for automobile trim strips, comprising a frame and a platform arranged on the frame for placing the exterior trim strips, characterized in that: Two bending assemblies with the same structure are symmetrically arranged on the frames located on both sides of the machine platform, and the bending assembly includes a moving mechanism and a swinging mechanism; The moving mechanism comprises a turntable base arranged on the frame and a turntable arranged on the turntable base, wherein the mounting end of the turntable is rotatably arranged on the turntable base through a slewing bearing; The upper end surface of the turntable is provided with a mounting frame, a through hole is provided on the mounting frame in the vertical direction, a movable frame movable in the vertical direction is provided on the end surface 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 provided in the movable frame and capable of longitudinal swinging, a swing arm body capable of transverse swinging is provided in the swing frame, the swing arm body passes through the through hole in the horizontal direction and extends to the side of the machine platform; A hydraulic chuck is provided at the end of the swing arm body located on the machine side; The upper end surface of the turntable base is provided with an oblique moving guide plate, and the angle between the axis of the oblique moving guide plate and the axis of the turntable is set at an acute angle; The oblique moving guide plate is provided with a second guide rail pair, a push plate is provided on the slider of the second guide rail pair, a guide column is provided on the upper end surface of the push plate, a mounting groove is provided in the turntable along the length direction of the turntable, and the guide column is arranged in the mounting groove and can move along the mounting groove; An oblique moving ball screw pair is arranged on the oblique moving guide plate along the axial direction, a nut of the oblique moving ball screw pair is connected to the push plate, and a second servo motor connected to the screw in the oblique moving ball screw pair is arranged on the oblique moving guide plate.

2. The bending device for automobile 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 arranged in the first swing arm frame, the inner wall of the first swing arm frame is provided with a seventh guide rail pair, the second swing arm frame is arranged on a slider of the seventh guide rail pair, a sixth ball screw pair is arranged in the first swing arm frame and the second swing arm frame along the length direction of the swing arm body, a seventh servo motor is arranged 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, and the nut of the sixth ball screw pair is connected to the second swing arm frame.

3. The bending device for automobile trim strips according to claim 1, characterized in that: The hydraulic chuck is arranged at the end of the swing arm body through an electric turntable.

4. The bending device for automobile trim strips according to claim 1, characterized in that: The horizontal sides of the swing frame are arranged in the mobile frame through horizontal rotating shafts, and a support frame is arranged on the mobile frame. A fifth servo motor and a fifth guide rail pair arranged in the vertical direction are arranged on the support frame, and a first hinge block is arranged on the slider of the fifth guide rail pair, and the first hinge block is hinged to the upper end surface of the swing frame through a first hinge; a fourth ball screw pair is penetrated through the first hinge block in the vertical direction, the nut of the fourth ball screw pair is connected to the first hinge block, and the output shaft of the fifth servo motor is connected to the screw in the fourth ball screw pair.

5. The bending device for automobile trim strips according to claim 1, characterized in that: The vertical ends of the swing arm body are arranged in the swing frame through a vertical rotating shaft, and a sixth servo motor and a sixth guide rail pair arranged along the length direction of the swing arm body are arranged on the swing arm body away from the hydraulic chuck installation side, and a second hinge block is arranged on the slider of the sixth guide rail pair, and the second hinge block is hinged to the side wall of the swing frame through a second hinge; a fifth ball screw pair is arranged through the second hinge block in the horizontal direction, the nut of the fifth ball screw pair is connected to the second hinge block, and the output shaft of the sixth servo motor is connected to the screw in the ball screw pair.

6. The bending device for automobile trim strips according to claim 1, characterized in that: The upper end surface of the frame is provided with a first guide rail pair along the horizontal direction of the frame, the turntable base is installed 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 arranged in 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 surface of the turntable base.

7. The bending device for automobile trim strips according to claim 1, characterized in that: A third guide rail pair is arranged on the upper end surface of the turntable along the horizontal direction of the turntable, and the lower end surface of the mounting frame is installed on the slider of the third guide rail pair. A third servo motor and a second ball screw pair arranged along the horizontal direction of the turntable are arranged in the turntable, and 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 end surface of the mounting frame.

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

Images