A front bumper frame bending apparatus

Abstract

The application relates to the technical field of automobile accessory processing, in particular to a bending equipment for automobile front bumper skeleton, which comprises an operation table, a die assembly is arranged on one side of the upper end of the operation table, the die assembly comprises fixed dies and movable dies which are arranged in parallel, the movable dies can slide towards one side of the fixed dies and are used for bending the automobile front bumper skeleton to be bent; a positioning component is fixed at the lower end of the operation table, and the positioning component is used for positioning the automobile front bumper skeleton to be bent which is placed on the operation table. The inner supporting component composed of multiple elastically-connected inner supporting blocks is arranged, before bending, the second air bag is inflated and expands outward and tightly abuts against the inner wall of the workpiece by inflating the air bag assembly, the inner supporting structure supports the inner wall of the workpiece during the bending process, the compression resistance of the workpiece is greatly enhanced, the inner wall of the workpiece is prevented from collapsing or wrinkling during the bending process, and the forming quality of the automobile front bumper skeleton is ensured.

Description

Technical Field

[0001] This invention relates to the field of automotive parts processing technology, specifically to a bending device for the frame of an automotive front bumper. Background Technology

[0002] In the manufacturing process of automotive front bumper frames, bending is a key forming process. Existing automotive front bumper frames are usually bent using simple die stamping or rolling bending methods.

[0003] However, with existing bending techniques, the front bumper frame of automobiles is prone to deformation. The front bumper frame is typically a hollow tubular or channel-like structure. During bending, due to the lack of internal support, the inner wall of the workpiece is prone to collapse or wrinkling. This deformation not only affects the appearance quality of the product but also reduces the structural strength of the frame, leading to product defects. Furthermore, the workpiece is in a free state during bending or is only fixed by simple clamps, making displacement easy and resulting in difficulty in controlling the bending angle and dimensional accuracy. Summary of the Invention

[0004] The purpose of this invention is to provide a bending device for the front bumper frame of an automobile, so as to solve the problem that the inner wall of the workpiece is prone to collapse or wrinkling due to lack of internal support during the bending process of the front bumper frame of an automobile.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a bending device for a front bumper frame of an automobile, comprising: The operating table has a mold assembly installed on one side of its upper end. The mold assembly includes a fixed mold and a movable mold arranged in parallel. The movable mold can slide toward the side of the fixed mold for bending the front bumper frame of the car to be bent. A positioning component is fixed to the lower end of the operating table. The positioning component is used to position the car front bumper frame to be bent on the operating table. The inner support component is mounted on the left and right sides of the operating table via a rotating component. The inner support component consists of multiple elastically connected inner support blocks. Each inner support block contains an airbag assembly. A fixing component is provided between two adjacent inner support blocks. The fixing component is used to fix the two adjacent inner support blocks. When the airbag assembly inflates, it is used to support the inner arm of the front bumper frame to be bent and to push the fixing component and the inner support block to separate, allowing the inner support block to bend with the front bumper frame.

[0006] This invention also includes the following technical features: In one embodiment of the present invention, the car front bumper frame to be bent is located between a fixed mold and a movable mold, and a positioning hole is provided at the lower end of the car front bumper frame. The fixed mold is fixed to the upper end of the operating table. A driving component for driving the movable mold to slide on the operating table is provided on the side away from the fixed mold. A stamping assembly for stamping the car front bumper frame with mounting groove is provided between the driving component and the movable mold.

[0007] In one embodiment of the present invention, the positioning component includes a second electric push rod fixed to the lower end of the operating table. A horizontal plate is fixedly installed at the output end of the second electric push rod, and a positioning post corresponding to the positioning hole is fixedly installed at the upper end of the horizontal plate. The upper end of the positioning post can slide through the side wall of the operating table and be inserted into the positioning hole.

[0008] In one embodiment of the present invention, two adjacent inner support blocks are rotatably connected at one end of their sidewalls by a fourth torsion spring. Each inner support block has mounting holes at both ends of its left and right sides, and a sliding groove is provided on the lower sidewall. A movable plate is slidably connected in the sliding groove. Limiting blocks are fixedly installed at both ends of the inner support blocks, and circular holes are provided on the sidewalls of the limiting blocks.

[0009] In one embodiment of the present invention, the airbag assembly includes a first airbag fixed inside the inner support block. The first airbag can expand in the forward and backward direction after being inflated. Channels are fixedly installed at both ends of the first airbag. The channels pass through and are fixed in the mounting holes. A second airbag is fixedly installed at the end of the channel away from the first airbag. The second airbag can expand in the left and right direction when inflated. A high-pressure hose is fixedly connected between two adjacent first airbags. An air tube is fixedly installed on the outermost first airbag. A connecting block is fixedly installed on the outermost inner support block. A connecting rod is fixedly installed at the upper end of the connecting block.

[0010] In one embodiment of the present invention, a slider is rotatably connected to one lower end of the movable plate via a rotating shaft. A third torsion spring is sleeved on the outer end of the rotating shaft. The slider is slidably connected in a groove, and a second spring is fixedly installed between the end of the slider and the inner sidewall of the groove. A limiting post is fixedly installed on the other end of the movable plate. The upper end of the slider contacts the outer wall of the first airbag. When the second spring is in a balanced state, the positioning post passes through the circular holes on two adjacent limiting blocks.

[0011] In one embodiment of the present invention, ball bearings are installed on both the left and right sides of the front and rear ends of the inner support block, and when the second airbag is inflated, the second airbag is located outside the ball bearings.

[0012] In one embodiment of the present invention, the rotating component includes a rotating cylinder and a rotating rod. The rotating cylinder is fixedly installed on the upper end of the operating table. One end of the rotating rod is inserted into the rotating cylinder and rotatably connected to its upper and lower ends through a bearing seat. A first torsion spring is fixedly installed between the two bearing seats. The rotating rod can rotate inside the rotating cylinder by compressing the first torsion spring.

[0013] In one embodiment of the present invention, a support rod is fixedly installed at the upper end of the rotating rod, and a linear motor is rotatably connected to the lower side of the end of the support rod away from the rotating rod via a rotating shaft. A second torsion spring is sleeved on the outer wall of the rotating shaft. When the second torsion spring is in a balanced state, the linear motor is parallel to the upper end of the operating table, and the moving slider of the linear motor is fixedly connected to the upper end of the connecting rod.

[0014] In one embodiment of the present invention, the driving component includes a first electric push rod fixed to the upper end of the operating table and a fixed plate fixed to one side of the moving mold. A push plate is fixedly installed at the output end of the first electric push rod. Multiple slide rods are fixedly installed on both the upper and lower sides of one end of the push plate. The slide rods slide through the side wall of the fixed plate and are fixedly installed with a contact plate. A first spring is sleeved on the outer end of the slide rod. When the first spring is in a balanced state, the contact plate does not contact the moving mold.

[0015] In one embodiment of the present invention, the stamping assembly includes through holes formed on the left and right sidewalls of the movable mold. The through holes are perpendicular to the tangent of the arc surface of the movable mold. A forming pressure head is slidably connected in the through holes. A drive rod is rotatably connected to the outer end of the forming pressure head. The drive rod is rotatably connected to the left and right ends of the push plate. When the first spring is in a balanced state, the stamping part of the forming pressure head is located in the through holes.

[0016] Compared with the prior art, the beneficial effects of the present invention are: By setting up an internal support component composed of multiple elastically connected internal support blocks, the airbag assembly is inflated before bending, causing the second airbag to expand outward and closely contact the inner wall of the workpiece. The internal support structure supports the inner wall of the workpiece throughout the bending process, which greatly enhances the workpiece's compressive strength and completely avoids the collapse or wrinkling of the inner wall of the workpiece during bending, thus ensuring the forming quality of the car front bumper frame. The inner support blocks are connected by torsion springs and are controlled by the inflation and deflation of the airbag assembly. After bending, the airbag deflates and contracts, and with the ball bearing structure, it can be easily pulled out from the bent workpiece, avoiding the problem of difficult demolding. The positioning component located at the bottom of the worktable can quickly and accurately position the workpiece to be bent on the worktable, ensuring the accuracy of the bending position. By setting up a stamping assembly, after the bending process is completed, the continuous thrust of the drive component drives the forming pressure head to slide out through the drive rod, directly stamping the mounting groove on the bent workpiece. This allows the bending and stamping processes to be completed in one clamping, eliminating the need for secondary positioning. This not only improves processing accuracy but also simplifies the production process. Attached Figure Description

[0017] Figure 1 A schematic diagram of the frame structure of a car's front bumper; Figure 2 This is a schematic diagram of the front bumper frame of the automobile located at the upper end of the control panel according to the present invention; Figure 3 This is a bottom view of the overall structure of the present invention; Figure 4 This is a schematic diagram of the positioning component structure of the present invention; Figure 5 This is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 6 This is a left view of the moving mold and driving component of the present invention; Figure 7 This is a right view of the moving mold and driving component of the present invention; Figure 8 For the present invention Figure 5 Enlarged view of the structure of region A in the middle; Figure 9 This is a schematic diagram showing the connection between the drive rod and the forming head of the present invention; Figure 10 This is a schematic diagram showing the connection between the rotating component and the inner support component of the present invention; Figure 11 This is a schematic diagram of the internal support component structure of the present invention; Figure 12 This is an exploded view of the internal support component of the present invention; Figure 13 This is a schematic cross-sectional view of the internal support component of the present invention; Figure 14 This is a schematic cross-sectional view of the inner support block of the present invention; Figure 15 This is a schematic diagram of the fixed component structure of the present invention.

[0018] In the picture: 10. Operating table; 11. Fixed mold; 12. Moving mold; 13. First electric push rod; 14. Push plate; 15. Slide rod; 151. First spring; 152. Contact plate; 20. Drive rod; 21. Through hole; 22. Forming pressure head; 30. Second electric actuator; 31. Horizontal plate; 32. Positioning post; 40. Rotating cylinder; 41. Rotating rod; 42. First torsion spring; 43. Support rod; 44. Round rod; 45. Linear motor; 46. Second torsion spring; 50. Inner support block; 501. Mounting hole; 502. Slide groove; 503. Limiting block; 51. Connecting block; 52. Connecting rod; 53. Ball bearing; 54. First airbag; 541. Channel; 542. Second airbag; 5421. Groove; 543. High-pressure hose; 55. Moving plate; 551. Slider; 552. Third torsion spring; 553. Limiting post; 56. Second spring; 57. Fourth torsion spring; 58. Air tube; 60. Front bumper frame for automobiles; 61. Mounting slot; 62. Fixing block. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clear and complete, the embodiments of this invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this invention, and are merely illustrative of the embodiments of this invention. They are not intended to limit the embodiments of this invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0020] Please see Figures 1 to 15 This invention provides a technical solution: a bending device for a car front bumper frame, including an operating platform 10. Support legs are fixedly installed on all four sides of the lower end of the operating platform 10 to support it. A metal circular plate is fixedly installed at the lower end of each support leg. Multiple circular holes are evenly distributed around the outer circumference of the metal circular plate, allowing expansion bolts to be used to fix the support legs to the ground. A mold assembly is installed on one side of the upper end of the operating platform 10. The mold assembly includes a fixed mold 11 and a movable mold 12 arranged in parallel. The fixed mold 11 is fixed to the upper end of the operating platform 10, and the lower end of the movable mold 12 slides in contact with the upper end of the operating platform 10. A drive component is provided on the side of the movable mold 12 away from the fixed mold 11 for driving it to slide on the operating table 10. The car front bumper frame 60 to be bent is located between the fixed mold 11 and the movable mold 12. The movable mold 12 can slide toward the side of the fixed mold 11 to bend the car front bumper frame 60 to be bent. The positioning component is fixed to the lower end of the operating table 10. The lower end of the car front bumper frame 60 is provided with a positioning hole. The positioning component is used to position the car front bumper frame 60 to be bent placed on the operating table 10, so as to quickly and accurately place the car front bumper frame 60 between the fixed mold 11 and the movable mold 12.

[0021] The inner support components are mounted on the left and right sides of the operating table 10 via rotating components. The inner support components consist of multiple elastically connected inner support blocks 50. Each inner support block 50 contains an airbag assembly. A fixing assembly is provided between two adjacent inner support blocks 50 to fix them together, forming a strip shape for easy insertion into the front bumper frame 60 to be bent. When the airbag assembly inflates, it supports the inner arm of the front bumper frame 60 to be bent and pushes the fixing assembly and the inner support block 50 apart, allowing the inner support block 50 to bend with the front bumper frame 60. This supports the inner wall of the front bumper frame 60 during bending, preventing the inner wall of the front bumper frame 60 from collapsing or wrinkling during bending, which would affect the quality of the front bumper frame 60.

[0022] Specifically, the car front bumper frame 60 that needs to be bent is placed on the operating table 10 between the fixed mold 11 and the moving mold 12 and positioned by the positioning component. Then, the rotating component inserts one end of the inner support component into the inner sides of the left and right ends of the car front bumper frame 60. The driving component drives the moving mold 12 to move towards one side of the fixed mold 11. At the same time, the positioning component retracts, removing the limit on the car front bumper frame 60. The moving mold 12 pushes the car front bumper frame 60 into contact with the fixed mold 11, squeezing and bending it. Meanwhile, the inner support component rotates and always supports the inner wall of the car front bumper frame 60 to prevent the inner wall of the car front bumper frame 60 from collapsing or wrinkling during the bending process.

[0023] In one embodiment, such as Figure 10 - Figure 15 As shown, the inner support block 50 is in the shape of an opening. The side walls of two adjacent inner support blocks 50 are rotatably connected by a fourth torsion spring 57. When the fourth torsion spring 57 is in a balanced state, the multiple inner support blocks 50 are arranged in a line. The inner support block 50 can be rotated to one side by pressing the fourth torsion spring 57. Each inner support block 50 has a mounting hole 501 at both the left and right ends. The lower side wall of the inner support block 50 is provided with a sliding groove 502. A movable plate 55 is slidably connected in the sliding groove 502. Limiting blocks 503 are fixedly installed at both the front and rear ends of the inner support block 50. The side wall of the limiting block 503 is provided with a round hole.

[0024] The airbag assembly includes a first airbag 54 fixed within an inner support block 50. The first airbag 54 inflates and expands in a forward-rear direction. Channels 541 are fixedly installed at both ends of the first airbag 54, passing through and fixed within mounting holes 501. A second airbag 542 is fixedly installed at the end of the channel 541 furthest from the first airbag 54. The inner end of the second airbag 542 is fixedly connected to the outer sidewall of the inner support block 50. The channel 541 connects the first airbag 54 and the second airbag 542. The channel 541 does not inflate. When the second airbag 542 inflates, it expands in a left-right direction and abuts against the inner wall of the front bumper frame 60, providing support to its inner wall. The first airbags 54 are adjacent to each other. A high-pressure hose 543 is fixedly connected between the inner support block 50 and the outermost first airbag 54. The length of the high-pressure hose 543 is greater than the length of the rotation path of the inner support block 50, so it will not affect the rotation of the inner support block 50. An air pipe 58 is fixedly installed on the outermost first airbag 54. The air pipe 58 is used to be fixedly connected to the external air supply and deflation hose to inflate the airbag assembly and release the gas in the airbag assembly. A connecting block 51 is fixedly installed on the outermost inner support block 50. A connecting rod 52 is fixedly installed on the upper end of the connecting block 51. The connecting rod 52 is used to be fixedly connected to the moving slider of the linear motor 45. When the linear motor 45 is started, it can drive the inner support component to move toward one side of the car front bumper frame 60 or away from the car front bumper frame 60.

[0025] A slider 551 is rotatably connected to one end of the movable plate 55 via a rotating shaft. A third torsion spring 552 is sleeved on the outer end of the rotating shaft. One end of the third torsion spring 552 is fixed to the lower end of the movable plate 55, and the other end is fixed to the upper end of the slider 551. The slider 551 is slidably connected in the slide groove 502. When the third torsion spring 552 is in a balanced state, the movable plate 55 and the slide groove 502 are in a parallel state. A second spring 56 is fixedly installed between the end of the slider 551 and the inner side wall of the slide groove 502. The upper end of the slider 551 extends out of the slide groove 502 and contacts the outer wall of the first airbag 54. A limit post 553 is fixedly installed on the other end of the movable plate 55. When the second spring 56 is in a balanced state, the limit post 553 passes through the round holes on the two adjacent limit blocks 503 and fixes the two adjacent inner support blocks 50.

[0026] Specifically, the inner support component is inserted into the front bumper frame 60 of the car to be bent, and then gas is injected into the air pipe 58 through the external air supply and deflation hose to inflate the airbag assembly. The first airbag 54 inflates and pushes the moving plate 55 to move the limiting post 553. The limiting post 553 and the two limiting blocks 503 separate. The second airbag 542 inflates outward and comes into contact with the inner wall of the front bumper frame 60 of the car, supporting its inner wall.

[0027] In one embodiment, such as Figure 11 , Figure 12 and Figure 14As shown, ball bearings 53 are installed on both the left and right sides of the front and rear ends of the inner support block 50. Support blocks are fixedly installed on both the left and right sides of the front and rear ends of the inner support block 50. The ball bearings 53 are rotatably disposed on the outer end of the support block, and the ball bearings 53 are located in the clearance groove of the second airbag 542. The distance between the two ball bearings 53 at the left and right ends of the same inner support block 50 is less than the inner diameter width of the front bumper frame 60 of the car. When the second airbag 542 is inflated, the second airbag 542 is located outside the ball bearings 53. When the second airbag 542 is not inflated, the ball bearings 53 are located outside the second airbag 542.

[0028] Specifically, after the front bumper frame 60 is bent, the airbag assembly is deflated, and the first airbag 54 and the second airbag 542 retract by half. The second airbag 542 separates from the inner wall of the front bumper frame 60. At the same time, the ball bearing 53 is located on the outside of the second airbag 542. When the inner support component is pulled out of the bent front bumper frame 60 by the linear motor 45, the ball bearing 53 rolls and connects with its inner wall to prevent the second airbag 542 from rubbing and sliding against its inner wall. When the inner support component is completely pulled out of the outer end of the front bumper frame 60, the inner support blocks 50 are arranged in a straight line under the action of the fourth torsion spring 57. After the remaining gas in the airbag assembly is released, the first airbag 54 is reset. Under the reaction force of the second spring 56, the moving plate 55 with the limiting post 553 is reset and inserted into the two limiting blocks 503 in sequence to fix the inner support block 50 again so that it can be inserted into the front bumper frame 60 again.

[0029] In one embodiment, such as Figure 2 and Figure 10 As shown, the rotating component includes a rotating cylinder 40 and a rotating rod 41. The rotating cylinder 40 is fixedly installed on the left and right sides of the upper end of the operating table 10. One end of the rotating rod 41 is inserted into the rotating cylinder 40 and is rotatably connected to its upper and lower ends through bearing seats. A first torsion spring 42 is fixedly installed between the two bearing seats. The rotating rod 41 can rotate inside the rotating cylinder 40 by compressing the first torsion spring 42. A support rod 43 is fixedly installed on the upper end of the rotating rod 41. A linear motor 45 is rotatably connected to the lower side of the end of the support rod 43 away from the rotating rod 41 through a rotating shaft. A second torsion spring 46 is sleeved on the outer wall of the rotating shaft. One end of the second torsion spring 46 is fixed to the outer wall of the round rod 44, and the other end is fixed to the upper end of the linear motor 45. When the second torsion spring 46 is in a balanced state, the linear motor 45 is parallel to the upper end of the operating table 10 and will not rotate. When the linear motor 45 is working, it will not rotate under the action of the second torsion spring 46. The moving slider of the linear motor 45 is fixedly connected to the upper end of the connecting rod 52. The linear motor 45 is used to drive the movement of the inner support component.

[0030] Specifically, after the front bumper frame 60 to be bent is placed on the upper end of the operating table 10, the linear motor 45 is started to insert one end of the inner support component into the inner end of the front bumper frame 60 and inflate the inner end. When the mold assembly bends the front bumper frame 60, the inner support block 50 bends along with the end of the front bumper frame 60. At the same time, the linear motor 45 rotates by compressing the second torsion spring 46 and the rotating rod 41 rotates by compressing the first torsion spring 42, so that the outer end of the inner support component moves along with the bent end of the front bumper frame 60 until the bending operation is completed.

[0031] In one embodiment, such as Figure 3 - Figure 5 As shown, the positioning component includes a second electric push rod 30 fixed to the lower end of the operating table 10. The second electric push rod 30 is fixed to the lower end of the operating table 10 by a fixing frame. A horizontal plate 31 is fixedly installed at the output end of the second electric push rod 30. A positioning post 32 corresponding to the positioning hole is fixedly installed at the upper end of the horizontal plate 31. The upper end of the positioning post 32 can slide through the side wall of the operating table 10 and be inserted into the positioning hole.

[0032] Specifically, before placing the front bumper frame 60, the second electric push rod 30 is activated and drives the upper end of the positioning post 32 to pass through the upper end of the operating table 10. Then, the front bumper frame 60 is placed on the upper end of the operating table 10, and the positioning hole at its lower end is fitted into the outer end of the positioning post 32 to position the front bumper frame 60. At this time, the ports at both ends of the front bumper frame 60 are located directly inside the inner support component. When the inner support component moves to one side of the front bumper frame 60, it can be directly inserted into the inner end of the front bumper frame 60.

[0033] In one embodiment, such as Figure 5 - Figure 7 As shown, the driving component includes a first electric push rod 13 fixed to the upper end of the operating table 10 and a fixed plate fixed to one side of the moving mold 12. A push plate 14 is fixedly installed at the output end of the first electric push rod 13. Multiple slide rods 15 are fixedly installed on both the upper and lower sides of one end of the push plate 14. The slide rods 15 slide through the side wall of the fixed plate and are fixedly installed with a contact plate 152. A first spring 151 is sleeved on the outer end of the slide rod 15. When the first spring 151 is in a balanced state, the contact plate 152 does not contact the moving mold 12.

[0034] Specifically, during the bending operation, the first electric push rod 13 pushes the moving mold 12 to move towards one side of the fixed mold 11, and squeezes and bends the car front bumper frame 60 located in the middle. When the front and rear ends of the car front bumper frame 60 are respectively attached to the inner walls of the fixed mold 11 and the moving mold 12, the first spring 151 is in a compressed state, but the contact plate 152 does not contact the outer side wall of the moving mold 12, thus completing the bending operation of the car front bumper frame 60.

[0035] In one embodiment, such as Figure 1 , Figure 7 - Figure 9 As shown, a stamping assembly for stamping the mounting groove 61 of the front bumper frame 60 of the car is provided between the driving component and the moving mold 12. The stamping assembly includes through holes 21 and grooves 5421 on the left and right side walls of the moving mold 12. The through holes 21 are perpendicular to the tangent of the arc surface of the moving mold 12. A forming head 22 is slidably connected in the through holes 21. A driving rod 20 is rotatably connected to the outer end of the forming head 22. The driving rod 20 is rotatably connected to the left and right ends of the push plate 14. When the first spring 151 is in a balanced state, the stamping part of the forming head 22 is located in the through holes 21. The groove 5421 is located at the outer end of one of the second airbags 542. The groove 5421 corresponds to the forming head 22. When the linear motor 45 drives the inner support component into the front bumper frame 60 of the car, after the front bumper frame 60 of the car is bent, the groove 5421 is located on the outer side of the forming head 22.

[0036] Specifically, after the front bumper frame 60 of the car is bent, the first electric push rod 13 continues to drive the push plate 14 to move towards one side of the moving mold 12. Since the moving mold 12 and the outer wall of the front bumper frame 60 of the car are in contact, the slide rod 15 pushes the push plate 14 towards one side of the moving mold 12 by squeezing the first spring 151 again, and pushes the drive rod 20 to move. The drive rod 20 drives the forming head 22 to slide out of the through hole 21 and contact the outer wall of the front bumper frame 60 of the car until the contact plate 152 and the side wall of the moving mold 12 are in contact. At this time, the forming head 22 punches out the mounting groove 61 on the outer wall of the front bumper frame 60 of the car. The mounting groove 61 is used for the insertion, positioning and welding of the fixing block 62 connected to the car chassis.

[0037] When this device is in operation, the car front bumper frame 60 to be bent is placed on the upper end of the operating table 10 and positioned by the positioning component. At this time, the ports at both ends of the car front bumper frame 60 are located directly inside the inner support component. The linear motor 45 is started to insert one end of the inner support component into the inner end of the car front bumper frame 60 and inflate it. Then, the positioning component is removed from positioning the car front bumper frame 60 to be bent, allowing it to slide on the operating table 10. Then, the moving mold 12 is driven by the driving component to move towards one side of the fixed mold 11 and to squeeze and bend the two ends of the car front bumper frame 60 to be bent. When the mold assembly bends the car front bumper frame 60, the inner support block 50 bends along with the bending of the ends of the car front bumper frame 60. At the same time, the second airbag 542 is always in contact with the inner wall of the car front bumper frame 60 to support it, so as to prevent the inner wall of the car front bumper frame 60 from collapsing or wrinkling during the bending process, which would affect the quality of the car front bumper frame 60.

[0038] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

[0039] 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 a process, method, article, or apparatus.

Claims

1. A bending device for a car front bumper frame, characterized in that, include: The operating table (10) has a mold assembly installed on one side of its upper end. The mold assembly includes a fixed mold (11) and a movable mold (12) arranged in parallel. The movable mold (12) can slide toward one side of the fixed mold (11) to bend the front bumper frame (60) of the car to be bent. A positioning component is fixed to the lower end of the operating table (10). The positioning component is used to position the car front bumper frame (60) to be bent on the operating table (10). The inner support component is set on the left and right sides of the operating table (10) by a rotating component. The inner support component consists of multiple elastically connected inner support blocks (50). Each inner support block (50) is provided with an airbag assembly. A fixing component is provided between two adjacent inner support blocks (50). The fixing component is used to fix the two adjacent inner support blocks (50). When the airbag assembly inflates, it is used to support the inner arm of the car front bumper frame (60) to be bent and to push the fixing component and the inner support block (50) to separate, so that the inner support block (50) can bend with the car front bumper frame (60).

2. The automotive front bumper frame bending device according to claim 1, characterized in that: The car front bumper frame (60) to be bent is located between the fixed mold (11) and the moving mold (12), and the lower end of the car front bumper frame (60) is provided with a positioning hole. The fixed mold (11) is fixed to the upper end of the operating table (10). The moving mold (12) is provided with a driving component on the side away from the fixed mold (11) for driving it to slide on the operating table (10). A stamping assembly for stamping the mounting groove (61) of the car front bumper frame (60) is provided between the driving component and the moving mold (12).

3. The automotive front bumper frame bending device according to claim 1, characterized in that: The positioning component includes a second electric push rod (30) fixed at the lower end of the operating table (10). A horizontal plate (31) is fixedly installed at the output end of the second electric push rod (30). A positioning post (32) with a corresponding positioning hole is fixedly installed at the upper end of the horizontal plate (31). The upper end of the positioning post (32) can slide through the side wall of the operating table (10) and be inserted into the positioning hole.

4. The automotive front bumper frame bending device according to claim 1, characterized in that: The two adjacent inner support blocks (50) are rotatably connected by a fourth torsion spring (57) at one end of their sidewalls. Each inner support block (50) has mounting holes (501) at both ends of its left and right sides, and a sliding groove (502) is provided on the lower sidewall. A movable plate (55) is slidably connected in the sliding groove (502). Limiting blocks (503) are fixedly installed at both ends of the inner support block (50), and round holes are provided on the sidewalls of the limiting blocks (503).

5. The automotive front bumper frame bending device according to claim 4, characterized in that: The airbag assembly includes a first airbag (54) fixed inside the inner support block (50). The first airbag (54) can expand in the forward and backward direction after being inflated. Channels (541) are fixedly installed at both ends of the first airbag (54). The channels (541) pass through and are fixed inside the mounting hole (501). A second airbag (542) is fixedly installed at the end of the channel (541) away from the first airbag (54). The second airbag (542) can expand in the left and right direction when inflated. A high-pressure hose (543) is fixedly connected between two adjacent first airbags (54). An air tube (58) is fixedly installed on the outermost first airbag (54). A connecting block (51) is fixedly installed on the outermost inner support block (50). A connecting rod (52) is fixedly installed at the upper end of the connecting block (51).

6. The automotive front bumper frame bending device according to claim 4, characterized in that: The lower side of one end of the movable plate (55) is rotatably connected to a slider (551) via a rotating shaft. A third torsion spring (552) is sleeved on the outer end of the rotating shaft. The slider (551) is slidably connected in the groove (502). A second spring (56) is fixedly installed between the end of the slider (551) and the inner side wall of the groove (502). A limit post (553) is fixedly installed on the other end of the movable plate (55). The upper end of the slider (551) is in contact with the outer wall of the first airbag (54). When the second spring (56) is in a balanced state, the limit post (553) passes through the round holes on two adjacent limit blocks (503).

7. The automotive front bumper frame bending device according to claim 5, characterized in that: The inner support block (50) has ball bearings (53) installed on both the left and right sides at both ends. When the second airbag (542) is inflated, the second airbag (542) is located outside the ball bearings (53).

8. The automotive front bumper frame bending device according to claim 1, characterized in that: The rotating component includes a rotating cylinder (40) and a rotating rod (41). The rotating cylinder (40) is fixedly installed on the upper end of the operating table (10). One end of the rotating rod (41) is inserted into the rotating cylinder (40) and is rotatably connected to its upper and lower ends through a bearing seat. A first torsion spring (42) is fixedly installed between the two bearing seats. The rotating rod (41) can rotate inside the rotating cylinder (40) by squeezing the first torsion spring (42).

9. The automotive front bumper frame bending device according to claim 8, characterized in that: A support rod (43) is fixedly installed at the upper end of the rotating rod (41). A linear motor (45) is rotatably connected to the lower side of the end of the support rod (43) away from the rotating rod (41) via a rotating shaft. A second torsion spring (46) is sleeved on the outer wall of the rotating shaft. When the second torsion spring (46) is in a balanced state, the linear motor (45) is parallel to the upper end of the operating table (10). The moving slider of the linear motor (45) is fixedly connected to the upper end of the connecting rod (52).

10. The automotive front bumper frame bending device according to claim 2, characterized in that: The driving component includes a first electric push rod (13) fixed to the upper end of the operating table (10) and a fixed plate fixed to one side of the moving mold (12). The output end of the first electric push rod (13) is fixedly installed with a push plate (14). Multiple slide rods (15) are fixedly installed on both the upper and lower sides of one end of the push plate (14). The slide rods (15) slide through the side wall of the fixed plate and are fixedly installed with a contact plate (152). The outer end of the slide rod (15) is sleeved with a first spring (151). When the first spring (151) is in a balanced state, the contact plate (152) does not contact the moving mold (12).

11. The automotive front bumper frame bending device according to claim 10, characterized in that: The stamping assembly includes through holes (21) on the left and right sidewalls of the movable mold (12). The through holes (21) are perpendicular to the tangent of the arc surface of the movable mold (12). A forming head (22) is slidably connected in the through holes (21). A drive rod (20) is rotatably connected to the outer end of the forming head (22). The drive rod (20) is rotatably connected to the left and right ends of the push plate (14). When the first spring (151) is in a balanced state, the stamping part of the forming head (22) is located in the through holes (21).

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