Automatic bending and straightening device for automobile lower cross beam

Abstract

The invention discloses an automatic bending straightening device for an automobile lower cross beam, and the automatic bending straightening device comprises a fixing module which comprises a support frame, a cross rod, a clamping cylinder, a first linear module, a first rotating motor, a first laser displacement sensor and a second laser displacement sensor; the shaping module comprises a second linear module, a mounting seat, a rotating table, a second rotating motor, an electric push rod and heating roller sets, the mounting seat is fixedly mounted on a second sliding table of the second linear module, at least one heating roller set is arranged on the rotating table, each heating roller set comprises two heating rollers arranged in parallel, and the heating rollers are rotatably mounted on the rotating table. Compared with the prior art, the problems that an existing bending straightening device for the automobile lower cross beam is poor in straightening effect and low in efficiency are solved.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle technology, and in particular to an automated bending and straightening device for the lower crossbeam of an automobile. Background Technology

[0002] The lower crossbeam of a car is a crucial load-bearing component in the vehicle's body structure. Located beneath the floor slab, it connects the left and right longitudinal beams laterally. The crossbeam enhances body rigidity, resists torsional deformation, and disperses impact forces during collisions, protecting the integrity of the passenger compartment. Furthermore, in new energy vehicles, the crossbeam provides mounting support points for seats, battery packs, and other equipment.

[0003] The crossbeams of new energy vehicles are typically formed by stamping hot-rolled steel plates. The crossbeams have an "n"-shaped cross section, and the side panels are prone to bending and deformation due to collisions, thus requiring straightening. Existing bending straightening devices for automotive lower crossbeams only use cold pressing for correction, resulting in poor straightening effects and low efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide an automated bending and straightening device for automobile lower crossbeams, so as to solve the problems of poor straightening effect and low efficiency of existing bending and straightening devices for automobile lower crossbeams.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an automated bending and straightening device for a lower crossbeam of an automobile, comprising: The fixed module includes a support frame, a crossbar, clamping cylinders, a first linear module, a first rotary motor, a first laser displacement sensor, and a second laser displacement sensor. The crossbar is fixedly mounted on the support frame. Clamping cylinders are arranged symmetrically at both ends of the crossbar. The piston rods of the clamping cylinders are connected to clamping plates. The lower crossbeam is clamped between the two clamping plates and contacts the bottom surface of the crossbar. The first linear module is fixedly mounted on the support frame. The first rotary motor is fixedly mounted on the first slide of the first linear module. The motor shaft of the first rotary motor is connected to a sensor mounting bracket. A vertical plate is provided on the sensor mounting bracket. The vertical plate extends into the inside of the lower crossbeam. Several first laser displacement sensors are arranged in parallel on one side of the vertical plate, and several second laser displacement sensors are arranged in parallel on the other side of the vertical plate. The first laser displacement sensors and the second laser displacement sensors are arranged back to back. The shaping module includes a second linear module, a mounting base, a rotary table, a second rotary motor, an electric push rod, and a heating roller assembly. The mounting base is fixedly mounted on the second slide of the second linear module. The second rotary motor is fixedly mounted on the mounting base. The rotary table is fixedly mounted on the motor shaft of the second rotary motor. The electric push rod is fixedly mounted on the mounting base. The rotary table is provided with two locking pin holes, which are symmetrically arranged on both sides of the second rotary motor. The shape of the locking pin holes matches the piston rod of the electric push rod. At least one heating roller assembly is provided on the rotary table. The heating roller assembly includes two parallel heating rollers, which are rotatably mounted on the rotary table.

[0006] As a further description of the above technical solution: Several magnets are embedded in the bottom surface of the crossbar, and the magnets are used to attract the lower crossbeam.

[0007] As a further description of the above technical solution: The magnet is detachably mounted on the crossbar.

[0008] As a further description of the above technical solution: The crossbar has several insertion slots with a "T" shaped cross-section. A connecting plate is provided on the back of the magnet. The width of the connecting plate is greater than the width of the magnet. The connecting plate is inserted into the insertion slot.

[0009] As a further description of the above technical solution: The length of the magnet is greater than the width of the crossbar.

[0010] As a further description of the above technical solution: The second linear module has a slide rail on one side, and the mounting base is slidably connected to the slide rail.

[0011] As a further description of the above technical solution: The width of the crossbar is equal to the width of the lower crossbeam.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In this invention, for the bending deformation of the lower crossbeam sidewall detected by the first laser displacement sensor or the second laser displacement sensor, the mounting base moves to the bending deformation location via the second linear module. The lower crossbeam sidewall is clamped between two heating rollers of a heating roller group. The heating rollers first heat the bending deformation location of the lower crossbeam sidewall, and then, through the reciprocating motion of the mounting base along the second linear module, repeatedly roll the bending deformation of the lower crossbeam sidewall to achieve straightening. After straightening is completed, the first laser displacement sensor and the second laser displacement sensor are used for detection again to ensure the straightening quality.

[0013] 2. In this invention, after one side wall of the lower crossbeam is straightened, if the other side wall needs to be straightened, after the mounting seat is removed from the lower crossbeam, the piston rod of the electric push rod retracts and disengages from the locking pin hole. Then, the second rotary motor drives the rotary table to rotate 180 degrees, so that the heating roller group is aligned with the other side wall of the lower crossbeam, and the piston rod of the electric push rod extends upward and inserts into the locking pin hole, locking the rotary table again, thereby satisfying the straightening requirements of the other side wall. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 A schematic diagram of an automated bending and straightening device for a car's lower crossbeam. Figure 1 .

[0016] Figure 2 A schematic diagram of an automated bending and straightening device for a car's lower crossbeam. Figure 2 .

[0017] Figure 3 A schematic diagram of an automated bending and straightening device for a car's lower crossbeam. Figure 3 .

[0018] Figure 4 This is a schematic diagram of the structure of a fixed module in an automated bending and straightening device for a car's lower crossbeam.

[0019] Legend: 1. Fixed module; 11. Support frame; 12. Crossbar; 13. Clamping cylinder; 131. Clamping plate; 14. First linear module; 15. First rotary motor; 16. First laser displacement sensor; 17. Magnet; 18. Second laser displacement sensor; 19. Sensor mounting bracket; 191. Vertical plate; 2. Shaping module; 21. Second linear module; 22. Mounting base; 23. Rotary table; 24. Second rotary motor; 25. Electric push rod; 26. Heating roller; 27. Slide rail; 9. Lower crossbeam. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention. Example 1

[0022] Please see Figure 1-4 This invention provides a technical solution: an automated bending and straightening device for a lower crossbeam of an automobile, comprising: The fixed module 1 includes a support frame 11, a crossbar 12, a clamping cylinder 13, a first linear module 14, a first rotary motor 15, a first laser displacement sensor 16, and a second laser displacement sensor 18. The crossbar 12 is fixedly mounted on the support frame 11. Clamping cylinders 13 are arranged symmetrically at both ends of the crossbar 12. The piston rods of the clamping cylinders 13 are connected to clamping plates 131. The lower crossbeam 9 is clamped between the two clamping plates 131 and contacts the bottom surface of the crossbar 12. The first linear module 14 is fixedly mounted on the support frame. On 11, the first rotary motor 15 is fixedly mounted on the first slide of the first linear module 14. The motor shaft of the first rotary motor 15 is connected to the sensor mounting bracket 19. The sensor mounting bracket 19 is provided with a vertical plate 191, which extends into the inner side of the lower crossbeam 9. A plurality of first laser displacement sensors 16 are arranged in parallel on one side of the vertical plate 191, and a plurality of second laser displacement sensors 18 are arranged in parallel on the other side of the vertical plate 191. The first laser displacement sensors 16 and the second laser displacement sensors 18 are arranged back to back. The shaping module 2 includes a second linear module 21, a mounting base 22, a rotary table 23, a second rotary motor 24, an electric push rod 25, and a heating roller assembly. The mounting base 22 is fixedly mounted on the second slide of the second linear module 21. The second rotary motor 24 is fixedly mounted on the mounting base 22. The rotary table 23 is fixedly mounted on the motor shaft of the second rotary motor 24. The electric push rod 25 is fixedly mounted on the mounting base 22. The rotary table 23 is provided with two locking pin holes, which are symmetrically arranged on both sides of the second rotary motor 24. The shape of the locking pin holes matches the piston rod of the electric push rod 25. The rotary table 23 is provided with at least one heating roller assembly, which includes two parallel heating rollers 26. The heating rollers 26 are rotatably mounted on the rotary table 23. Heating rods are provided inside the heating rollers 26 to achieve electric heating.

[0023] After one side wall of the lower crossbeam 9 is straightened, if the other side wall needs to be straightened, after the mounting base 22 is removed from the lower crossbeam 9, the piston rod of the electric push rod 25 retracts and disengages from the locking pin hole. Then, the second rotary motor 24 drives the rotary table 23 to rotate 180 degrees, so that the heating roller group is aligned with the other side wall of the lower crossbeam 9, and the piston rod of the electric push rod 25 extends upward and inserts into the locking pin hole, locking the rotary table 23 again, thereby satisfying the straightening requirements of the other side wall.

[0024] The width of the crossbar 12 is equal to the width of the lower crossbeam 9. In the attached diagram, the widths of the crossbar 12 and the lower crossbeam 9 are slightly different to distinguish them. In practice, it is preferable that the widths are equal to facilitate the installation and alignment of the lower crossbeam 9 with the heating roller assembly.

[0025] Working principle: When the lower crossbeam 9 is straightened, it is first aligned with the crossbar 12, so that the bottom plate of the lower crossbeam 9 contacts the bottom surface of the crossbar 12, and the lower crossbeam 9 is clamped by the clamping plates 131 of the clamping cylinders 13 at both ends of the crossbar 12. The bottom of the clamping plates 131 does not extend beyond the bottom side of the bottom plate. Then, the first linear module 14 drives the first rotary motor 15 and the sensor mounting bracket 19 to move in a straight line. During the sliding process inside the lower crossbeam 9, the first laser displacement sensor 16 and the second laser displacement sensor 18 respectively detect the two side walls of the lower crossbeam 9 to determine whether the distance to the side walls of the lower crossbeam 9 has changed, thereby realizing the bending detection. After the detection is completed, the sensor mounting bracket 19 moves out of the lower crossbeam 9 and rotates 180 degrees through the first rotary motor 15. The first laser displacement sensor 16 and the second laser displacement sensor 18 rotate to the first linear module 14 to achieve the avoidance. For the bending deformation of the lower crossbeam 9 sidewall detected by the first laser displacement sensor 16 or the second laser displacement sensor 18, the mounting base 22 moves to the bending deformation location via the second linear module 21. The lower crossbeam 9 sidewall is clamped between two heating rollers 26 of a heating roller group. The heating rollers 26 first heat the bending deformation location of the lower crossbeam 9 sidewall, and then reciprocate along the second linear module 21 via the mounting base 22, repeatedly pressing down the bending deformation of the lower crossbeam 9 sidewall to achieve straightening. After straightening is completed, the first laser displacement sensor 16 and the second laser displacement sensor 18 are used for detection again to ensure the straightening quality. Example 2

[0026] Based on the above embodiments, this embodiment further improves upon the following technical solution: several magnets 17 are embedded on the bottom surface of the crossbar 12. The magnets 17 are used to attract the lower crossbeam 9 to achieve preliminary positioning of the lower crossbeam 9 before clamping.

[0027] Magnet 17 is detachably mounted on crossbar 12. Crossbar 12 is provided with several insertion slots, the cross-section of which is "T" shaped. A connecting plate is provided on the back of magnet 17. The width of the connecting plate is greater than the width of magnet 17. The connecting plate is inserted into the insertion slot, which enables quick assembly and disassembly of magnet 17. Example 3

[0028] Based on the above embodiments, this embodiment further improves upon the following technical solution: Preferably, the length of the magnet 17 is greater than the width of the crossbar 12, which facilitates pushing the magnet 17 into or out of the insertion slot on the crossbar 12, thereby enabling the magnet 17 to be quickly assembled and disassembled. Example 4

[0029] Based on the above embodiments, this embodiment further improves upon the following technical solution: a slide rail 27 is provided on one side of the second linear module 21, and the mounting base 22 is slidably connected to the slide rail 27, so that the mounting base 22 slides smoothly.

[0030] 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.

Claims

1. An automated bending and straightening device for a lower crossbeam of an automobile, characterized in that, include: A fixed module includes a support frame, a crossbar, clamping cylinders, a first linear module, a first rotary motor, a first laser displacement sensor, and a second laser displacement sensor. The crossbar is fixedly mounted on the support frame. Clamping cylinders are symmetrically arranged at both ends of the crossbar, with their piston rods connected to clamping plates. A lower crossbeam is clamped between the two clamping plates and contacts the bottom surface of the crossbar. The first linear module is fixedly mounted on the support frame. The first rotary motor is fixedly mounted on a first slide of the first linear module. The motor shaft of the first rotary motor is connected to a sensor mounting bracket. A vertical plate is provided on the sensor mounting bracket, extending into the inner side of the lower crossbeam. Several first laser displacement sensors are arranged in parallel on one side of the vertical plate, and several second laser displacement sensors are arranged in parallel on the other side of the vertical plate. The first and second laser displacement sensors are arranged back-to-back. The shaping module includes a second linear module, a mounting base, a rotary table, a second rotary motor, an electric push rod, and a heating roller assembly. The mounting base is fixedly mounted on the second slide of the second linear module. The second rotary motor is fixedly mounted on the mounting base. The rotary table is fixedly mounted on the motor shaft of the second rotary motor. The electric push rod is fixedly mounted on the mounting base. The rotary table is provided with two locking pin holes, which are symmetrically arranged on both sides of the second rotary motor. The shape of the locking pin holes matches the piston rod of the electric push rod. At least one heating roller assembly is provided on the rotary table. The heating roller assembly includes two parallel heating rollers, which are rotatably mounted on the rotary table.

2. The automated bending and straightening device for a lower crossbeam of an automobile according to claim 1, characterized in that, Several magnets are embedded in the bottom surface of the crossbar, and the magnets are used to attract the lower crossbeam.

3. The automated bending and straightening device for a lower crossbeam of an automobile according to claim 2, characterized in that, The magnet is detachably mounted on the crossbar.

4. An automated bending and straightening device for a lower crossbeam of an automobile according to claim 3, characterized in that, The crossbar is provided with several insertion slots, the cross-section of the insertion slots is "T" shaped, and a connecting plate is provided on the back of the magnet. The width of the connecting plate is greater than the width of the magnet, and the connecting plate is inserted into the insertion slot.

5. An automated bending and straightening device for a lower crossbeam of an automobile according to claim 4, characterized in that, The length of the magnet is greater than the width of the crossbar.

6. The automated bending and straightening device for a lower crossbeam of an automobile according to claim 1, characterized in that, The second linear module is provided with a slide rail on one side, and the mounting base is slidably connected to the slide rail.

7. An automated bending and straightening device for a lower crossbeam of an automobile according to claim 1, characterized in that, The width of the crossbar is equal to the width of the lower crossbeam.

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