Rotary die for side flanging of automobile covering part

Abstract

The utility model relates to the technical field of automobile covering part flanging processing, and discloses an automobile covering part side flanging rotating die, which solves the problems in the background technology, and is characterized in that the rear wall of a lower die holder is fixedly connected with a sliding seat, an air pressure driver is fixedly arranged on the sliding seat, and the telescopic end of the air pressure driver is fixedly connected with a gear box; the bottom of the gearbox is slidably connected with the sliding seat, a servo motor and a driving wheel are mounted in the gearbox, the output end of the servo motor is fixedly connected to the driving wheel, one side of the driving wheel is meshed with a first driven wheel, the other side of the driving wheel is meshed with a second driven wheel, and one side of the second driven wheel is meshed with a third driven wheel. The first driven wheel and the third driven wheel are fixedly connected with a pair of wheel discs respectively, flanging pieces are fixedly connected to the disc faces of the two wheel discs respectively, pre-flanging releases partial elastic deformation in advance, the springback amount after final flanging is obviously reduced, the geometrical shape of materials is optimized, and the follow-up forming process is more stable.

Description

Technical Field

[0001] This utility model belongs to the field of automotive body panel flanging processing technology, specifically an automotive body panel side flanging rotary mold. Background Technology

[0002] Automotive body panels refer to the surface or internal parts made of thin metal sheets that cover the engine, chassis, and form the cab and body. They can be divided into three categories according to function and location: external body panels, internal body panels, and frame body panels.

[0003] Flanging is a process that bends the edge of a sheet metal into a certain angle or shape using a mold. In the existing technology, the sheet metal is stamped and flanged using a mold. Springback of the flanged part is a common phenomenon in the stamping process. This is mainly due to the elastic recovery of the material after forming, which affects the processing accuracy. To address this, we propose a rotary mold for flanging the side of automotive sheet metal to improve sheet metal springback. Utility Model Content

[0004] To address the problem of elastic recovery in materials after flanging, which affects processing accuracy, this utility model provides the following technical solution: a rotary mold for flanging the side of automotive body panels, comprising: a lower mold base, a lower pressing die fixedly connected to the lower mold base, an upper mold base disposed above the lower pressing die, a hydraulic actuator connected to the top of the upper mold base, an upper pressing die fixedly connected to the bottom of the upper mold base, a cylinder connected to the upper pressing die, a pressure core fixedly connected to the fixed end of the cylinder, flanging cutters fixedly connected to both ends of the upper pressing die, and a rear wall of the lower mold base fixedly connected to... The device has a slide block on which a pneumatic actuator is fixedly mounted. A gearbox is fixedly connected to the telescopic end of the pneumatic actuator. The bottom of the gearbox is slidably connected to the slide block. A servo motor and a drive wheel are installed inside the gearbox. The output end of the servo motor is fixedly connected to the drive wheel. One side of the drive wheel is engaged with a first driven wheel, and the other side is engaged with a second driven wheel. One side of the second driven wheel is engaged with a third driven wheel. The first driven wheel and the third driven wheel are respectively fixedly connected to a pair of discs. Flanged parts are fixedly attached to the surfaces of the two discs.

[0005] Preferably, the flange is fixed above the horizontal axis of the wheel.

[0006] Preferably, the cylinder is symmetrically fixed to the pressure core.

[0007] Preferably, the gearbox is made of stainless steel.

[0008] Preferably, a limit plate is provided at the end of the slide away from the pneumatic actuator.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] Before the actual flanging, a sliding gearbox is placed above the slide block. The gearbox is connected to a pneumatic actuator, which pushes the gearbox to slide back and forth. Inside the gearbox are a servo motor and a gear set, which includes a driving wheel and three driven wheels. The driving wheel is connected to the output of the servo motor, with the first driven wheel connected to its left side and the second driven wheel connected to its right side. The third driven wheel is connected to the left side of the second driven wheel. The first and third driven wheels are connected to a wheel disk, and the wheel disk has flanging parts on its surface. During pre-flanging, the pneumatic actuator pushes the gearbox forward, causing the flanging parts to snap onto both sides of the sheet. The servo motor drives the driving wheel to rotate clockwise, the first driven wheel to rotate counterclockwise, and the third driven wheel to rotate clockwise. The flanging parts on both sides rotate at a certain angle to complete the pre-flanging. Pre-flanging releases some elastic deformation in advance, significantly reducing the springback after the final flanging, optimizing the geometry of the material, and making the subsequent forming process more stable. Attached Figure Description

[0011] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0012] Figure 1 This is a schematic diagram of the overall design of this utility model;

[0013] Figure 2 This is a partial side view of the present invention;

[0014] Figure 3 This is a schematic diagram of the internal structure of the gearbox of this utility model.

[0015] In the diagram: 1. Lower mold base; 2. Lower pressing mold; 3. Pressing core; 4. Upper pressing mold; 5. Cylinder; 6. Upper mold base; 7. Hydraulic actuator; 8. Flanging cutter; 9. Slide; 10. Pneumatic actuator; 11. Gearbox; 12. Servo motor; 13. Drive wheel; 14. First driven wheel; 15. Second driven wheel; 16. Third driven wheel; 17. Wheel disc; 18. Flanging part; 19. Limiting plate. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0017] Depend on Figures 1 to 3 As provided, this utility model includes:

[0018] like Figure 1 As shown, the automotive body panel side flanging rotary mold of this embodiment includes: a lower mold base 1, a lower pressing mold 2 fixedly connected to the lower mold base 1, an upper mold base 6 disposed above the lower pressing mold 2, a hydraulic actuator 7 connected to the top of the upper mold base 6, an upper pressing mold 4 fixedly connected to the bottom of the upper mold base 6, a cylinder 5 connected to the upper pressing mold 4, a pressure core 3 fixedly connected to the fixed end of the cylinder 5, flanging blades 8 fixedly connected to both ends of the upper pressing mold 4, a slide 9 fixedly connected to the rear wall of the lower mold base 1, a pneumatic actuator 10 fixedly disposed on the slide 9, and the extension of the pneumatic actuator 10... A gearbox 11 is fixedly connected to the concave end. The bottom of the gearbox 11 is slidably connected to the slide 9. A servo motor 12 and a drive wheel 13 are installed inside the gearbox 11. The output end of the servo motor 12 is fixedly connected to the drive wheel 13. One side of the drive wheel 13 is engaged with the first driven wheel 14, and the other side is engaged with the second driven wheel 15. One side of the second driven wheel 15 is engaged with the third driven wheel 16. The first driven wheel 14 and the third driven wheel 16 are respectively fixedly connected to a pair of wheel discs 17. Flanged parts 18 are fixedly connected to the surfaces of the two wheel discs 17 respectively.

[0019] The flange 18 is fixed above the horizontal axis of the wheel 17. When the wheel 17 rotates, the flange 18 rotates accordingly, resulting in a simple structure.

[0020] Cylinder 5 is symmetrically fixed to pressure core 3, and pressure core 3 is subjected to uniform force.

[0021] Gearbox 11 is made of stainless steel, which has good wear resistance and high strength.

[0022] A limit plate 19 is provided at the end of the slide 9 away from the pneumatic actuator. The limit plate 19 restricts the movement of the gearbox 11 and prevents the gearbox 11 from falling off the slide.

[0023] Working principle: The plate is placed on the lower die 2, which is fixedly connected to the lower die base 1. The upper die 4 is fixedly connected to the upper die base 6. The top of the upper die base 6 is connected to the first hydraulic actuator 7, and the bottom is connected to one end of the cylinder 5. The other end of the cylinder 5 is connected to the pressure core. The hydraulic actuator 7 is used to push the upper die 4 down, so that the pressure core 3 presses the plate. A slide 9 is provided behind the lower die base 1. A slidable gearbox 11 is placed on the slide 9. The gearbox 11 is connected to the pneumatic actuator 10. The pneumatic actuator 10 pushes the gearbox 11 to slide back and forth. The gearbox 11 is equipped with a servo motor 12 and a gear set. The gear set includes a driving gear 13 and a first driven gear 14, a second driven gear 15, and a third driven gear 16. The driving gear 13 is connected to the output end of the servo motor 12. The left side is connected to the first driven gear 14, the right side is connected to the second driven gear 15, and the left side of the second driven gear 15 is connected to the third driven gear 16. The first driven gear 14 and the third driven gear 16... Three driven wheels 16 are connected to a wheel 17. The wheel 17 is equipped with a flanging piece 18. When pre-flanging, the pneumatic actuator 10 pushes the gearbox 11 to slide forward. The limiting plate 19 prevents the gearbox 11 from falling off the slide block 9, so that the flanging piece 18 is just pressed against both sides of the plate. The servo motor 12 drives the drive wheel 13 to rotate clockwise, the first driven wheel 14 to rotate counterclockwise, and the third driven wheel 16 to rotate clockwise. The flanging pieces 18 on both sides rotate at a certain angle to complete the pre-flanging. At this time, the servo motor 12 rotates in the opposite direction, and the flanging piece 18 follows the rotation and leaves the plate. The pneumatic actuator 10 pulls the gearbox 11 back to the initial position. The cylinder 5 retracts and pulls the upper pressure mold 4 downward. Flanging blades 8 are installed on both sides of the upper pressure mold 4. The flanging blades 8 fold the plate as the lower pressure mold 2 moves downward. The pre-flanging releases part of the elastic deformation in advance, which significantly reduces the amount of springback after the final flanging, optimizes the geometry of the material, and makes the subsequent forming process more stable.

[0024] 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.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotary mold for side flanging of automotive body panels, comprising: A lower mold base (1) is fixedly connected to a lower pressing mold (2). An upper mold base (6) is provided above the lower pressing mold (2). A hydraulic actuator (7) is connected to the top of the upper mold base (6). An upper pressing mold (4) is fixedly connected to the bottom of the upper mold base (6). A cylinder (5) is connected to the upper pressing mold (4). A pressure core (3) is fixedly connected to the fixed end of the cylinder (5). Flanging blades (8) are fixedly connected to both ends of the upper pressing mold (4). The lower mold base (1) is characterized by having a slide (9) fixedly connected to the rear wall. A pneumatic actuator (10) is fixedly provided on the slide (9). A telescopic end of the pneumatic actuator (10) is fixedly connected to a... A gearbox (11) is slidably connected to a slide block (9) at its bottom. A servo motor (12) and a drive wheel (13) are installed inside the gearbox (11). The output end of the servo motor (12) is fixedly connected to the drive wheel (13). The drive wheel (13) is meshed with a first driven wheel (14) on one side and with a second driven wheel (15) on the other side. A third driven wheel (16) is meshed with one side of the second driven wheel (15). A pair of wheel discs (17) are fixedly connected to the first driven wheel (14) and the third driven wheel (16). Flanged parts (18) are fixedly attached to the surfaces of the two wheel discs (17).

2. The automotive body panel side-flanging rotary mold according to claim 1, characterized in that: The flange (18) is fixed above the horizontal axis of the wheel (17).

3. The automotive body panel side-flanging rotary mold according to claim 1, characterized in that: The cylinder (5) is symmetrically fixed to the pressure core (3).

4. The automotive body panel side-flanging rotary mold according to claim 1, characterized in that: The gearbox (11) is made of stainless steel.

5. The automotive body panel side-flanging rotary mold according to claim 4, characterized in that: A limit plate (19) is provided on the end of the slide (9) away from the pneumatic actuator.

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