Aluminum anti-collision beam press bending equipment

Abstract

The application relates to the technical field of press bending treatment, in particular to an aluminum anti-collision beam press bending equipment, which comprises a base and further comprises two horizontal moving seats slidingly arranged on the base, a rotating seat rotatably arranged on the horizontal moving seat, the rotating seat being capable of supporting two ends of a profile to be treated and being connected with a turnover mechanism; a straining mechanism arranged on the rotating seat, the straining mechanism being capable of entering two profile cavities of the profile and performing a straining action on the profile; the straining mechanism is provided with two straining blocks capable of extending into the profile cavities, and rollers are arranged on the straining blocks, so that the profile and the straining blocks can be allowed to relatively displace, the local stress of the profile cannot be released when the profile is bent and deformed due to fixed locking type clamping, and the material flow is blocked and accumulated, the problem of easy pressure instability and wrinkling is effectively solved, the appearance quality of the final anti-collision beam is effectively improved, and the structural strength, the crashworthiness and the product yield of the component are effectively guaranteed.

Description

Technical Field

[0001] This invention relates to the field of bending technology, specifically to a bending device for aluminum anti-collision beams. Background Technology

[0002] As a key energy-absorbing component of the automotive passive safety system, the anti-collision beam is widely used in modern vehicle body structure due to its lightweight and high strength characteristics. In actual production, in order to meet the requirements of vehicle assembly and collision energy absorption, the aluminum profile, which is initially straight, needs to be bent to obtain a curvature that matches the curvature of the front of the vehicle body.

[0003] Existing bending equipment typically employs a process of fixing and clamping at both ends. The two ends of the aluminum profile to be bent are locked and fixed by clamps, and then pressure is applied from top to bottom by a bottom-arc-shaped die, forcing the profile to undergo plastic bending at the mid-span, ultimately forming a crash beam component with a specific curvature.

[0004] In actual production, aluminum crash beams may experience problems such as wrinkling on the inner side and thinning of the outer wall during the bending process, affecting the product's appearance quality and structural performance. One of the key factors causing these problems is that traditional bending equipment typically uses rigid clamping to fix and lock the two ends of the profile. During bending, the two ends of the profile are completely fixed, and axial movement is constrained. As the die presses down and bends the profile, the profile tends to shorten in the length direction. The axial constraint introduced by the rigid clamping will superimpose with the tensile / compressive stress generated by bending, forming a higher stress level in local areas. This increases the risk of wrinkling and instability on the inner side under pressure and excessive thinning on the outer side; in severe cases, even microcracks may occur. Consequently, during bending, the tightening clamping at both ends of the profile can easily reduce the appearance quality of the crash beam, weaken its structural strength and impact resistance, and restrict the improvement of yield. Summary of the Invention

[0005] The purpose of this invention is to provide an aluminum anti-collision beam bending device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: An aluminum anti-collision beam bending device includes a base and further includes: Two transverse seats are slidably mounted on the base, and a rotating seat is rotatably mounted on the transverse seats. The rotating seat can receive both ends of the profile to be processed and is connected to a flipping mechanism. The support mechanism is provided on the rotating seat. The support mechanism can enter the two cavities of the profile to perform a support action on the profile. The rotating seat is also provided with an end limiting mechanism that abuts against the end of the profile. The end limiting mechanism is equipped with a braking mechanism. The base is connected to a pressing die via multiple guide rods. When the pressing die presses down on the profile, the flipping mechanism drives the rotating seat to perform a deflection action, and the tensioning mechanism moves relative to the profile. After the pressing die has finished pressing down, the braking mechanism locks the end limiting mechanism.

[0007] The aluminum anti-collision beam bending device described above: the base is provided with a guide rail, the transverse shift seat is slidably fitted into the guide rail, and the transverse shift seat is connected to the movable end of the first hydraulic cylinder installed on the base; Each of the two inner sides of the rotating seat is provided with a protrusion, which is used to receive the end of the profile. The first oil cylinder is used to drive the transverse seat to slide, so as to change the distance between the two rotating seats.

[0008] The aluminum anti-collision beam bending device described above: the tensioning mechanism includes a movable seat that is slidably connected to the rotating seat, and the movable seat can be driven by a second hydraulic cylinder located at the bottom of the rotating seat to move relative to the rotating seat; The tensioning mechanism also includes a tensioning structure disposed on the movable seat, and the tensioning structure is connected to a power component.

[0009] The aluminum anti-collision beam bending device described above: the tensioning structure includes two tensioning blocks installed on the movable seat. The tensioning blocks are provided with strip-shaped grooves, so that the ends of the tensioning blocks form two locking tongues that can enter the two cavities respectively. The locking tongues are provided with multiple rollers, and the locking tongues cooperate with the power component.

[0010] The aluminum anti-collision beam bending device as described above: the power component includes a slider slidably disposed on the movable seat and a third hydraulic cylinder installed on the side of the movable seat. The movable end of the third hydraulic cylinder is connected to the slider, and the slider is also connected to a drive block located between the two tensioning blocks.

[0011] The aluminum anti-collision beam bending equipment described above: the upper and lower surfaces of the drive block are provided with a first inclined surface, and the two support blocks are provided with a second inclined surface on one side facing the drive block. The second oil cylinder can drive the movable seat to move toward the end of the profile so that the drive block and the two support blocks enter the cavity. When the third hydraulic cylinder drives the slider to move the drive block toward the outside of the cavity, the first inclined surface cooperates with the second inclined surface to cause the locking tongues of the two supporting blocks to open, and the roller abuts against the inner wall of the cavity.

[0012] As described above, the aluminum anti-collision beam bending device includes two elastic telescopic rods on the movable seat and a limiting block connected to the telescopic components of the two elastic telescopic rods. After the tensioning mechanism enters the cavity, the limiting block abuts against the end face of the profile, and the internal spring of the elastic telescopic rod is in a compressed state.

[0013] The aluminum anti-collision beam bending device described above: the braking mechanism includes a fourth hydraulic cylinder mounted on the movable seat and a second brake block connected to the movable end of the fourth hydraulic cylinder, and the limiting block is connected to a first brake block that cooperates with the second brake block.

[0014] As described above, the aluminum anti-collision beam bending equipment includes a flipping mechanism that is rotatably mounted on the side of the transverse seat. The rotating shaft of the rotating seat is connected to a transmission arm, and the transmission arm is also connected to the movable end of the cylinder. During the profile bending process, the cylinder can drive the transmission arm to drive the rotating seat to perform a deflection action.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention, by setting two support blocks that can extend into the cavity and installing rollers on the support blocks, allows relative displacement between the profile and the support blocks when the die presses down on the profile, causing the profile to deform. This avoids the problem of local stress in the profile being unable to be released when it bends due to fixed locking clamping, which leads to material flow obstruction and accumulation, and is prone to pressure instability and wrinkling. This effectively improves the appearance quality of the final anti-collision beam and provides effective protection for the structural strength, impact resistance and product yield of the component. During the bending deformation of the profile, the profile and the support block undergo relative displacement, avoiding fixed locking clamping. At the same time, the elastic telescopic rod supports the limit block to move towards the end face of the profile. The limit block can always maintain abutment with the end face of the profile. After the bending process is completed, the fourth hydraulic cylinder can drive the second brake block to apply pressure to the first brake block, so that the first brake block is locked. The limit block can effectively limit both ends of the profile, preventing the profile from rebounding after bending, which would lead to poor bending effect and achieve profile shaping. Attached Figure Description

[0016] Figure 1 This is a front view of one embodiment of an aluminum anti-collision beam bending device.

[0017] Figure 2 This is a schematic diagram showing the tensioned state of both ends of the profile in one embodiment of the aluminum anti-collision beam bending equipment.

[0018] Figure 3 This is an exploded view of the tensioning mechanism in one embodiment of an aluminum anti-collision beam bending device.

[0019] Figure 4 This is a schematic diagram of the braking mechanism in one embodiment of an aluminum anti-collision beam bending device.

[0020] Figure 5 This is a schematic diagram of the end limiting mechanism in one embodiment of an aluminum anti-collision beam bending device.

[0021] In the diagram: 1. Base; 2. Guide rod assembly; 3. Top plate; 4. Press mold; 5. Profile; 501. Cavity; 6. Transverse seat; 7. First hydraulic cylinder; 8. Rotating seat; 801. Protrusion; 9. Second hydraulic cylinder; 10. Movable seat; 11. Third hydraulic cylinder; 12. Slider; 13. Drive block; 1301. First inclined plane; 14. Support block; 1401. Second inclined plane; 1402. Roller; 15. Elastic telescopic rod; 16. Limiting block; 17. First braking block; 18. Fourth hydraulic cylinder; 19. Second braking block; 20. Cylinder; 21. Transmission arm. Detailed Implementation

[0022] 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.

[0023] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0024] Please see Figures 1-5 In this embodiment, an aluminum anti-collision beam bending device includes a base 1, and further includes: Two transverse seats 6 are slidably mounted on the base 1. A rotating seat 8 is rotatably mounted on the transverse seats 6. The rotating seat 8 can receive both ends of the profile 5 to be processed and is connected to a flipping mechanism. A tensioning mechanism is provided on the rotating seat 8. The tensioning mechanism can enter the two cavities 501 of the profile 5 to perform a tensioning action on the profile 5. The rotating seat 8 is also provided with an end limiting mechanism that abuts against the end of the profile 5. The end limiting mechanism is equipped with a braking mechanism. Among them, the base 1 is connected to the pressing mold 4 by multiple guide rod groups 2. When the pressing mold 4 presses down on the profile 5, the flipping mechanism drives the rotating seat 8 to perform a deflection action, and the tensioning mechanism moves relative to the profile 5. After the pressing mold 4 finishes pressing down, the braking mechanism locks the end limiting mechanism.

[0025] In this embodiment, it should be noted that in actual operation, the top plate 3 is driven downward by the hydraulic system, thereby causing the mold 4 to apply downward pressure to the profile 5, causing the profile 5 to switch from a straight state to a bent state.

[0026] As a further embodiment of the present invention, please refer again. Figure 1 and Figure 3 The base 1 is provided with a guide rail, the transverse seat 6 is slidably fitted into the guide rail, and the transverse seat 6 is connected to the movable end of the first hydraulic cylinder 7 installed on the base 1. Each of the two inner sides of the rotating seat 8 is provided with a protrusion 801, which is used to receive the end of the profile 5. The first oil cylinder 7 is used to drive the transverse seat 6 to slide so as to change the distance between the two rotating seats 8.

[0027] Furthermore, during operation, the first cylinder 7 should drive the transverse shift seat 6 to move according to the length of the profile 5 to be processed, and adjust the distance between the two transverse shift seats 6 so that the protrusion 801 can easily support both ends of the profile 5, so that the equipment can be used to process profiles 5 of different lengths. It should also be noted that the pressing mold 4 is set up in an assembly manner, and its contour is adjusted according to the profiles 5 of different lengths and different bending processing requirements.

[0028] As a further embodiment of the present invention, please refer again. Figure 3 , Figure 4 as well as Figure 5 The tensioning mechanism includes a movable seat 10 slidably connected to the rotating seat 8. The movable seat 10 can be driven by a second hydraulic cylinder 9 located at the bottom of the rotating seat 8 to move relative to the rotating seat 8. The tensioning mechanism also includes a tensioning structure located on the movable seat 10, and the tensioning structure is connected to a power component.

[0029] The opening and closing structure includes two clamping blocks 14 mounted on the movable seat 10. Each clamping block 14 has a strip-shaped groove, forming two locking tongues at its ends that can respectively enter the two cavities 501. Each locking tongue is equipped with multiple rollers 1402, and the locking tongues cooperate with the power assembly. The power assembly includes a slider 12 slidably mounted on the movable seat 10 and a third hydraulic cylinder 11 mounted on the side of the movable seat 10. The movable end of the third hydraulic cylinder 11 is connected to the slider 12, and the slider 12 is also connected to a drive block 13 located between the two clamping blocks 14. The upper and lower surfaces of the drive block 13 are provided with first inclined surfaces 1301, and the two clamping blocks 14 are provided with second inclined surfaces 1401 on the side facing the drive block 13. The second hydraulic cylinder 9 can drive the movable seat 10 to move toward the end of the profile 5 so that the drive block 13 and the two clamping blocks 14 enter the cavity 501. When the third hydraulic cylinder 11 drives the slider 12 to move the drive block 13 toward the outside of the cavity 501, the first inclined surface 1301 and the second inclined surface 1401 cooperate to cause the locking tongues of the two clamping blocks 14 to open. The roller 1402 abuts against the inner wall of the cavity 501.

[0030] In this embodiment, specifically, during processing, initially, the rotating seat 8 is kept horizontal, and the profile 5 to be processed is placed on the protrusion 801. Subsequently, the second hydraulic cylinder 9 is activated, causing the drive block 13 and the two clamping blocks 14 to enter the cavity 501. Then, the third hydraulic cylinder 11 is activated, driving the slider 12 to move the drive block 13 toward the outside of the cavity 501. Thus, through the cooperation of the first inclined surface 1301 and the second inclined surface 1401, the locking tongues on the two clamping blocks 14 open, and the roller 1402 abuts against the inner wall of the cavity 501, thereby clamping the end of the profile 5. To address this, the present invention provides two support blocks 14 that can extend into the cavity 501, and rollers 1402 on the support blocks 14. When the mold 4 presses down on the profile 5, causing the profile 5 to deform, the relative displacement between the profile 5 and the support blocks 14 is allowed. This avoids the problem that the local stress of the profile 5 cannot be released when it bends due to the fixed locking clamping, which would lead to the material flow being obstructed and accumulating, and easily causing the problem of instability and wrinkling under pressure. This effectively improves the appearance quality of the final anti-collision beam and provides effective protection for the structural strength, impact resistance and product yield of the component.

[0031] As a further embodiment of the present invention, please refer again. Figure 4 and Figure 5The end limiting mechanism includes two elastic telescopic rods 15 disposed on the movable seat 10 and a limiting block 16 connected to the telescopic component of the two elastic telescopic rods 15. After the tensioning mechanism enters the cavity 501, the limiting block 16 abuts against the end face of the profile 5, and the internal spring of the elastic telescopic rod 15 is in a compressed state.

[0032] As a further embodiment of the present invention, the braking mechanism includes a fourth hydraulic cylinder 18 mounted on the movable seat 10 and a second brake block 19 connected to the movable end of the fourth hydraulic cylinder 18, and the limiting block 16 is connected to a first brake block 17 that cooperates with the second brake block 19.

[0033] In detail, both the first brake block 17 and the second brake block 19 have anti-slip surfaces on their opposite sides; During the bending deformation of profile 5, profile 5 and support block 14 undergo relative displacement to avoid fixed locking clamping. At the same time, the elastic telescopic rod 15 supports the movement of limit block 16 toward the end face of profile 5. Limit block 16 can always maintain contact with the end face of profile 5. After the bending process is completed, the fourth oil cylinder 18 can drive the second brake block 19 to apply pressure to the first brake block 17, so that the first brake block 17 is locked (the second brake block 19 is in the position corresponding to the first brake block 17 after the profile 5 is bent). Limit block 16 can effectively limit both ends of profile 5 to prevent profile 5 from rebounding after bending, which would result in poor bending effect.

[0034] As a further embodiment of the present invention, please refer again. Figure 2 The flipping mechanism includes a cylinder 20 rotatably mounted on the side of the transverse seat 6. The rotating shaft of the rotating seat 8 is connected to a transmission arm 21. The transmission arm 21 is also connected to the movable end of the cylinder 20. During the bending process of the profile 5, the cylinder 20 can drive the transmission arm 21 to drive the rotating seat 8 to perform a deflection action.

[0035] In this embodiment, when the die 4 presses down on the profile 5 to cause the profile 5 to bend and deform, in order to adapt to the angle changes at both ends of the profile 5, the movable end of the cylinder 20 moves, which causes the rotating seat 8 to deflect through the transmission arm 21, thus effectively promoting the bending and forming process of the profile 5.

[0036] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An aluminum anti-collision beam bending device, comprising a base; Its features are, Also includes: Two transverse seats are slidably mounted on the base, and a rotating seat is rotatably mounted on the transverse seats. The rotating seat can receive both ends of the profile to be processed and is connected to a flipping mechanism. The support mechanism is provided on the rotating seat. The support mechanism can enter the two cavities of the profile to perform a support action on the profile. The rotating seat is also provided with an end limiting mechanism that abuts against the end of the profile. The end limiting mechanism is equipped with a braking mechanism. The base is connected to a pressing die via multiple guide rods. When the pressing die presses down on the profile, the flipping mechanism drives the rotating seat to perform a deflection action, and the tensioning mechanism moves relative to the profile. After the pressing die has finished pressing down, the braking mechanism locks the end limiting mechanism.

2. The aluminum anti-collision beam bending device according to claim 1, characterized in that, The base is provided with a guide rail, the transverse sliding seat is slidably fitted into the guide rail, and the transverse sliding seat is connected to the movable end of the first hydraulic cylinder installed on the base; Each of the two inner sides of the rotating seat is provided with a protrusion, which is used to receive the end of the profile. The first oil cylinder is used to drive the transverse seat to slide, so as to change the distance between the two rotating seats.

3. The aluminum anti-collision beam bending device according to claim 1, characterized in that, The tensioning mechanism includes a movable seat that is slidably connected to the rotating seat. The movable seat can be driven by a second hydraulic cylinder located at the bottom of the rotating seat to move relative to the rotating seat. The tensioning mechanism also includes a tensioning structure disposed on the movable seat, and the tensioning structure is connected to a power component.

4. The aluminum anti-collision beam bending device according to claim 3, characterized in that, The opening and closing structure includes two support blocks installed on the movable seat. The support blocks are provided with strip-shaped grooves so that the ends of the support blocks form two locking tongues that can enter the two cavities respectively. The locking tongues are provided with multiple rollers and cooperate with the power component.

5. The aluminum anti-collision beam bending device according to claim 4, characterized in that, The power assembly includes a slider slidably mounted on the movable seat and a third hydraulic cylinder mounted on the side of the movable seat. The movable end of the third hydraulic cylinder is connected to the slider, and the slider is also connected to a drive block located between the two support blocks.

6. The aluminum anti-collision beam bending device according to claim 5, characterized in that, The upper and lower surfaces of the drive block are provided with a first inclined surface, and the two support blocks are provided with a second inclined surface on the side facing the drive block. The second hydraulic cylinder can drive the movable seat to move toward the end of the profile so that the drive block and the two support blocks can enter the cavity. When the third hydraulic cylinder drives the slider to move the drive block toward the outside of the cavity, the first inclined surface cooperates with the second inclined surface to cause the locking tongues of the two supporting blocks to open, and the roller abuts against the inner wall of the cavity.

7. The aluminum anti-collision beam bending device according to claim 3, characterized in that, The end limiting mechanism includes two elastic telescopic rods disposed on the movable seat and a limiting block connected to the telescopic components of the two elastic telescopic rods. After the tensioning mechanism enters the cavity, the limiting block abuts against the end face of the profile, and the internal spring of the elastic telescopic rod is in a compressed state.

8. The aluminum anti-collision beam bending device according to claim 7, characterized in that, The braking mechanism includes a fourth hydraulic cylinder mounted on the movable seat and a second brake block connected to the movable end of the fourth hydraulic cylinder. The limiting block is connected to a first brake block that cooperates with the second brake block.

9. The aluminum anti-collision beam bending device according to claim 1, characterized in that, The flipping mechanism includes a cylinder rotatably mounted on the side of the transverse seat. The rotating shaft of the rotating seat is connected to a transmission arm, and the transmission arm is also connected to the movable end of the cylinder. During the profile bending process, the cylinder can drive the transmission arm to drive the rotating seat to perform a deflection action.

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