Automobile rear auxiliary frame longitudinal beam flattening device
By designing a flattening device for the rear subframe of the automobile rear subframe including a concave assembly, a flattening assembly and an inner mold assembly, the problems of complex and high cost of longitudinal beam manufacturing process are solved, rapid molding and low-cost production are achieved, and deformation of the molded part is avoided.
Patent Information
- Application Number
- CN202421931543.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-08-09
AI Technical Summary
In the prior art, the manufacturing process of the rear subframe longitudinal beam of the automobile rear subframe is complex, with high production costs and low efficiency. Especially when the mold is difficult to remove, it is easy to deform the molded part, which is difficult to meet the production capacity needs.
A vertical beam flattening device for the rear subframe of the automobile rear subframe including an upper mold device and a lower mold device is designed. The combination of the concave assembly, the end flattening assembly, the inner mold assembly and the mobile tongue core assembly is used to achieve rapid concave and end flattening of the longitudinal beam, and the gap design of the inner mold assembly is designed to facilitate the removal of the longitudinal beam and avoid deformation.
It improves the forming efficiency of the longitudinal beam, reduces production costs, and ensures the forming quality, meeting the manufacturing requirements of the rear subframe longitudinal beam of the automobile.
Smart Images
Figure CN223114040U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobile parts manufacturing equipment, in particular to a device for flattening the longitudinal beam of an automobile rear subframe. Background Art
[0002] The automobile rear subframe is an important part of the automobile chassis. It is usually located at the rear of the automobile, connecting the rear suspension system and the vehicle body, and is mainly used for supporting, shock absorption, connection and protection.
[0003] The longitudinal beam and cross beam of the automobile rear subframe together form the frame structure of the subframe. The frame structure is not only used to support the weight of the vehicle, but also used to connect the suspension system, wheels, etc. The manufacturing process of the longitudinal beam of the automobile rear subframe is relatively complex. The traditional manufacturing process is high-pressure hydroforming, with high production costs, high defect rates and low efficiency, and the production capacity cannot meet the demand. The manufacturing of the longitudinal beam of the automobile rear subframe needs to meet a series of standards and requirements to ensure its structural strength, durability and matching with the whole vehicle. The longitudinal beam of the automobile rear subframe uses high-strength welded pipes, and there are many parts that need to be installed and connected. The manufacturing is complex, involving 3D pipe cutting, bending, flattening, concave forming, convex forming, punching, 3D laser cutting, etc.
[0004] Most of the existing longitudinal beams of automobile rear subframes are formed by bending circular welded pipes and then making concave shapes at specific parts, and both ends of the longitudinal beam need to be flattened. If die stamping is used to make concave shapes and flatten the ends, it is difficult to remove the inner support die. If forced to remove, the formed parts will be deformed again. In the traditional manufacturing process, after die limiting, high-pressure hydroforming is used, but the production cost and defect rate of high-pressure hydroforming are relatively high, and the efficiency is low, and the production capacity is difficult to meet the demand.
[0005] Therefore, those skilled in the art are committed to developing a device for flattening the longitudinal beam of an automobile rear subframe, which is conducive to quickly making concave shapes and flattening the ends of the longitudinal beam of the automobile rear subframe, improving the forming efficiency of the longitudinal beam and reducing the production cost. Summary of the Utility Model
[0006] The technical problem to be solved by the utility model is to provide a device for flattening the longitudinal beam of an automobile rear subframe, which is conducive to quickly making concave shapes and flattening the ends of the longitudinal beam of the automobile rear subframe, improving the forming efficiency of the longitudinal beam and reducing the production cost.
[0007] The technical solution of the utility model to solve the above technical problems is as follows:
[0008] A device for flattening the longitudinal beam of an automobile rear subframe, comprising
[0009] an upper die device, the upper die device having a concave forming component and an end flattening component;
[0010] Lower die device, the lower die device cooperates with the upper die device, a concave forming support component and a flattening support component which are respectively matched with the concave forming component and the end flattening component are installed on the lower die device, an inner die component for penetrating into the end of the longitudinal beam is also installed on the lower die device, a movable tongue core component is installed inside the inner die component, and the movable tongue core component moves inside the inner die component to push the inner die component to expand.
[0011] The beneficial effects of adopting the above solution are as follows: The longitudinal beam is placed on the concave forming support component and the flattening support component for positioning and fixing. After the inner die component penetrates into the end of the longitudinal beam, the movable tongue core component moves inside the inner die component to make the inner die component expand to form a suitable die-pressed inner mold. Then the upper die device moves down to abut against the lower die device for die pressing, so that the concave forming component and the concave forming support component cooperate to punch a concave part at a suitable position of the longitudinal beam, and the end flattening component and the flattening support component cooperate to flatten the end of the longitudinal beam. Finally, the movable tongue core component withdraws, and a gap appears between the inner die component and the longitudinal beam, which is convenient for subsequent removal of the longitudinal beam.
[0012] The movable tongue core component moves inside the inner die component to make the inner die component expand, forming a die-pressed inner mold, which is convenient for the end of the longitudinal beam to be flattened and formed.
[0013] After the end of the longitudinal beam is flattened and formed, the outer wall of the inner die component abuts against the inner wall of the longitudinal beam. If the longitudinal beam is directly removed, it is not only laborious, but also the formed end of the longitudinal beam will be deformed, resulting in scrap parts. By moving out the movable tongue core, the inner die component shrinks, and a gap appears between the outer wall of the inner die component and the inner wall of the longitudinal beam, which is beneficial to the removal of the longitudinal beam and avoids deformation at the same time.
[0014] On the basis of the above technical solution, the present invention can also be improved as follows.
[0015] Further, the inner die component includes a first inner die part and a second inner die part which are oppositely arranged. The first inner die part is fixedly connected with an inner die support block, the second inner die part is connected with a first power device, and the first power device drives the second inner die part to approach or move away from the first inner die part.
[0016] The movable tongue core component is located between the first inner die part and the second inner die part, and the inner die support block is installed on the moving component.
[0017] The beneficial effects of adopting the above further solution are as follows: After the first power device drives the second inner die part to move away from the first inner die part, the movable tongue core component moves between the first inner die part and the second inner die part, so that the first inner die part, the movable tongue core component and the second inner die part form a dense whole as the die-pressed inner mold, which is beneficial to the subsequent die pressing and forming of the end flattening component.
[0018] Subsequently, the movable tongue core assembly retracts, and the first power unit drives the second inner mold part closer to the first inner mold part, creating a gap between the end of the longitudinal beam and the inner mold part, facilitating the rapid removal of the longitudinal beam.
[0019] Furthermore, the movable tongue core assembly includes a movable tongue core. The end of the movable tongue core is connected to the output end of a second power device. The second power device is installed on the side wall of the inner mold support block, and the second power device pushes the movable tongue core to move between the first inner mold part and the second inner mold part.
[0020] The beneficial effect of adopting the above further solution is that the second power device drives the movable tongue core to move between the first inner mold part and the second inner mold part, facilitating the expansion or retraction of the first inner mold part and the second inner mold part.
[0021] Furthermore, the movable assembly includes a movable plate. The inner mold support block is installed on the movable plate. A slider is installed on the lower side of the movable plate, and a slide rail cooperating with the slider is installed on the lower mold device. The movable plate is connected to a third power device, and the third power device drives the inner mold support block to slide along the slide rail.
[0022] The beneficial effect of adopting the above further solution is that the second power device drives the inner mold support block to move, facilitating the insertion of the inner mold assembly into the end of the longitudinal beam.
[0023] Furthermore, the end flattening assembly includes a flattening block. The flattening block is connected to the upper mold device, and a flattening groove is provided on the flattening block.
[0024] The beneficial effect of adopting the above further solution is that the movement of the upper mold device drives the flattening block to move, facilitating the cooperation of the flattening groove and the end of the longitudinal beam to be molded into a set shape.
[0025] Furthermore, the flattening support assembly includes a flattening support block, and the flattening support block has a first fixing groove for fixing the longitudinal beam.
[0026] The beneficial effect of adopting the above further solution is that the flattening groove and the first fixing groove cooperate to mold the end of the longitudinal beam into a set shape.
[0027] Furthermore, the indentation assembly includes an indentation block and an indentation die. The indentation block is connected to the upper mold device. The indentation block has a positioning groove, and the indentation die is installed in the indentation block and the end of the indentation die is located in the positioning groove.
[0028] The beneficial effect of adopting the above further solution is that the indentation die is used to mold a concave portion on the longitudinal beam.
[0029] Further, the concave forming support assembly includes a concave forming support block, and a second fixing groove adapted to the bending portion of the longitudinal beam is provided on the concave forming support block.
[0030] The beneficial effect of adopting the above further solution is that the second fixing groove is used to limit and fix the longitudinal beam, which is beneficial to the subsequent die pressing forming of the concave and convex dies.
[0031] Further, a guiding sleeve is installed on the upper die device, and a guiding rod adapted to the guiding sleeve is installed on the lower die device;
[0032] An upper limit block is further installed on the upper die device, and a lower limit block adapted to the upper limit block is installed on the lower die device.
[0033] The beneficial effect of adopting the above further solution is that the cooperation of the guiding sleeve and the guiding rod facilitates the vertical up and down movement of the upper die device, and the cooperation of the upper limit block and the lower limit block is beneficial to adjusting the moving distance of the upper die device. Description of the Drawings
[0034] Figure 1 It is a schematic structural diagram of a specific embodiment of the present utility model;
[0035] Figure 2 It is a schematic structural diagram of the lower die device of a specific embodiment of the present utility model;
[0036] Figure 3 It is a partial structural schematic diagram of the lower die device of a specific embodiment of the present utility model Figure 1 ;
[0037] Figure 4 It is a partial structural schematic diagram of the lower die device of a specific embodiment of the present utility model Figure 2 ;
[0038] Figure 5 It is a partial structural schematic diagram of the lower die device of a specific embodiment of the present utility model Figure 3 ;
[0039] Figure 6 It is a schematic structural diagram of the upper die device of a specific embodiment of the present utility model.
[0040] In the drawings, the list of components represented by each reference numeral is as follows:
[0041] 1. Upper die device; 2. Lower die device; 3. Concave punching component; 4. End flattening component; 5. Concave punching support component; 6. Flattening support component; 7. Longitudinal beam; 8. Inner die component; 9. Moving tongue core component; 10. First inner die part; 11. Second inner die part; 12. Inner die support block; 13. First power device; 14. Moving tongue core; 15. Second power device; 16. Moving plate; 17. Slide rail; 18. Third power device; 19. Flattening block; 20. Flattening groove; 21. Flattening support block; 22. First fixing groove; 23. Concave punching block; 24. Concave punching die; 25. Positioning groove; 26. Concave punching support block; 27. Second fixing groove; 28. Guide sleeve; 29. Guide rod; 30. Upper limit block; 31. Lower limit block. Detailed implementation mode
[0042] The principles and features of the present utility model will be described below with reference to the accompanying drawings. The examples given are only for explaining the present utility model and are not intended to limit the scope of the present utility model.
[0043] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "inner", "outer", "peripheral side", "circumferential direction", etc. are based on the orientation or positional relationships shown in the accompanying drawings. These are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the system or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.
[0044] In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.
[0045] In the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0046] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 shown, a device for flattening the longitudinal beam of an automobile rear subframe can achieve the following by using the longitudinal beam production tooling of this implementation:
[0047] 1. Study the deformation condition of the pipe fitting after bending and stamping;
[0048] 2. Study the springback law of the pipe fitting after bending and stamping; 3. Study the die process and structure for punching the pipe fitting without a female die; 4. Study the internal bulging forming process and structure of the pipe fitting boss through a stamping cam.
[0049] Specifically, the flattening device for the longitudinal beam of the rear subframe of an automobile includes
[0050] The upper die device 1, and the upper die device 1 has a concave punching component 3 and an end flattening component 4;
[0051] The lower die device 2, which cooperates with the upper die device 1. A concave punching support component 5 and a flattening support component 6 that cooperate with the concave punching component 3 and the end flattening component 4 respectively are installed on the lower die device 2. An internal die component 8 for passing through the end of the longitudinal beam 7 is also installed on the lower die device 2. A movable tongue core component 9 is installed inside the internal die component 8, and the movable tongue core component 9 moves inside the internal die component 8 to push the internal die component 8 to bulge.
[0052] In the present utility model, the longitudinal beam 7 is placed on the concave punching support component 5 and the flattening support component 6 for positioning and fixing. After the internal die component 8 passes through the end of the longitudinal beam 7, the movable tongue core component 9 moves inside the internal die component 8 to make the internal die component 8 bulge to form a suitable die-pressed internal mold. Then, the upper die device 1 moves downward to abut against the lower die device 2 for die pressing, so that the concave punching component 3 and the concave punching support component 5 cooperate to punch a concave portion at a suitable position of the longitudinal beam 7, and the end flattening component 4 and the flattening support component 6 cooperate to flatten the end of the longitudinal beam 7. Finally, the movable tongue core component 9 withdraws, and a gap appears between the internal die component 8 and the longitudinal beam 7, which is convenient for taking out the longitudinal beam 7 subsequently.
[0053] As Figure 2 、 Figure 3 、 Figure 4 and Figure 5 shown, in some embodiments, the internal die component 8 includes a first internal die member 10 and a second internal die member 11 arranged oppositely. The first internal die member 10 is fixedly connected to the internal die support block 12. There is a certain gap between the first internal die member 10 and the flattening support component 6 for the longitudinal beam 7 to be inserted. The second internal die member 11 is connected to the first power device 13. The first power device 13 can be a cylinder and the first power device 13 is installed on the cylinder mounting plate, and the cylinder mounting plate is installed on the internal die support block 12. The first power device 13 drives the second internal die member 11 to approach or move away from the first internal die member 10. When the first power device 13 drives the second internal die member 11 to move away from the first internal die member 10, a sliding cavity is formed. The movable tongue core component 9 is located between the first internal die member 10 and the second internal die member 11, specifically located inside the sliding cavity, and the internal die support block 12 is installed on the moving component.
[0054] The movable tongue core assembly 9 includes a movable tongue core 14, the end of which is conical, and the end of the movable tongue core 14 is connected to the output end of the second power device 15. The second power device 15 can be a cylinder, and the second power device 15 is installed on the side wall of the inner mold support block 12. The second power device 15 pushes the movable tongue core 14 to move between the first inner mold 10 and the second inner mold 11.
[0055] In the embodiment, the moving assembly includes a moving plate 16, the inner mold support block 12 is installed on the moving plate 16, a slider is installed on the lower side of the moving plate 16, a slide rail 17 cooperating with the slider is installed on the lower mold device 2, and the moving plate 16 is connected to a third power device 18. The third power device 18 can be a cylinder. The third power device 18 drives the inner mold support block 12 to slide along the slide rail 17, thereby driving the inner mold assembly 8 to insert or move out of the end of the longitudinal beam 7.
[0056] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the end flattening assembly 4 includes a flattening block 19, which is fixedly connected to the upper mold device 1 and is provided with a flattening groove 20. The flattening support assembly 6 includes a flattening support block 21, which has a first fixing groove 22 for fixing the longitudinal beam 7. The flattening groove 20 and the first fixing groove 22 cooperate with each other, and under the molding action of the upper mold device 1, the end of the longitudinal beam 7 is molded into a set shape.
[0057] The denting assembly 3 includes a denting block 23 and a denting punch 24. The denting block 23 is connected to the upper mold device 1. The denting block 23 has a positioning groove 25. The denting punch 24 is installed in the denting block 23 and the end of the denting punch 24 is located in the positioning groove 25. The denting support assembly 5 includes a denting support block 26. The denting support block 26 is provided with a second fixing groove 27 that cooperates with the curved portion of the longitudinal beam 7. After the positioning groove 25 and the second fixing groove 27 cooperate to position and fix the longitudinal beam 7, under the molding action of the upper mold device 1, the denting punch 24 molds a concave portion at a suitable position of the longitudinal beam 7.
[0058] The upper mold device 1 is provided with a guide sleeve 28, the lower mold device 2 is provided with a guide rod 29 which cooperates with the guide sleeve 28, the upper mold device 1 is provided with an upper limit block 30, and the lower mold device 2 is provided with a lower limit block 31 which cooperates with the upper limit block 30. The cooperation of the guide sleeve 28 and the guide rod 29 facilitates the vertical upward and downward movement of the upper mold device 1, and the cooperation of the upper limit block 30 and the lower limit block 31 facilitates the adjustment of the moving distance of the upper mold device 1.
[0059] By using the above-mentioned device for flattening the longitudinal beam of the rear subframe of an automobile, after the longitudinal beam of the rear subframe of the automobile is quickly bulged and formed, the thinning rate of the welded pipe is controlled at a low level. At the same time, the profile accuracy of the welding lap joint surface and the bent pipe surface is maintained within the preset range, the position accuracy of the positioning holes meets the set requirements, the tolerance of the flattened size is maintained within a reasonable error range, and the tolerance of the bulging height is also controlled within an appropriate dimensional accuracy, meeting the manufacturing requirements of the rear sub-longitudinal beam of the automobile.
[0060] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.
[0061] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. An automobile rear subframe longitudinal beam flattening device, characterized in that: including an upper die device (1), the upper die device (1) having a concave forming component (3) and an end flattening component (4); a lower die device (2), the lower die device (2) cooperating with the upper die device (1), a concave forming support component (5) and a flattening support component (6) respectively cooperating with the concave forming component (3) and the end flattening component (4) being installed on the lower die device (2), an inner die component (8) for penetrating into the end of the longitudinal beam (7) being further installed on the lower die device (2), a movable tongue core component (9) being installed in the inner die component (8), and the movable tongue core component (9) moving in the inner die component (8) to push the inner die component (8) to expand.
2. The automobile rear subframe longitudinal beam flattening device according to claim 1, characterized in that: The inner die component (8) includes a first inner die part (10) and a second inner die part (11) arranged oppositely, the first inner die part (10) being fixedly connected to an inner die support block (12), the second inner die part (11) being connected to a first power device (13), and the first power device (13) driving the second inner die part (11) to approach or move away from the first inner die part (10); The movable tongue core component (9) is located between the first inner die part (10) and the second inner die part (11), and the inner die support block (12) is installed on a moving component.
3. The automobile rear subframe longitudinal beam flattening device according to claim 2, characterized in that: The movable tongue core component (9) includes a movable tongue core (14), the end of the movable tongue core (14) being connected to the output end of a second power device (15), the second power device (15) being installed on the side wall of the inner die support block (12), and the second power device (15) pushing the movable tongue core (14) to move between the first inner die part (10) and the second inner die part (11).
4. The device for flattening the longitudinal beam of the rear subframe of an automobile according to claim 2, characterized in that: The moving component includes a moving plate (16), the inner die support block (12) being installed on the moving plate (16), a slider being installed on the lower side of the moving plate (16), a slide rail (17) cooperating with the slider being installed on the lower die device (2), the moving plate (16) being connected to a third power device (18), and the third power device (18) driving the inner die support block (12) to slide along the slide rail (17).
5. The automobile rear subframe longitudinal beam flattening device according to claim 1, characterized in that: The end flattening component (4) includes a flattening block (19), the flattening block (19) being connected to the upper die device (1), and a flattening groove (20) being provided on the flattening block (19).
6. The automobile rear subframe longitudinal beam flattening device according to claim 1, characterized in that: The flattening support component (6) includes a flattening support block (21), and a first fixing groove (22) for fixing the longitudinal beam (7) being provided on the flattening support block (21).
7. The automobile rear subframe longitudinal beam flattening device according to claim 1, characterized in that: The concave forming component (3) includes a concave forming block (23) and a concave forming punch (24), the concave forming block (23) being connected to the upper die device (1), a positioning groove (25) being provided on the concave forming block (23), and the concave forming punch (24) being installed in the concave forming block (23) and the end of the concave forming punch (24) being located in the positioning groove (25).
8. The device for flattening the longitudinal beam of the rear subframe of an automobile according to claim 1, characterized in that: The concave pressing support assembly (5) includes a concave pressing support block (26), and a second fixing groove (27) matching with the bending part of the longitudinal beam (7) is arranged on the concave pressing support block (26).
9. The flattening device for the longitudinal beam of the rear subframe of an automobile according to claim 1, wherein: A guide sleeve (28) is installed on the upper die device (1), and a guide rod (29) matching with the guide sleeve (28) is installed on the lower die device (2); An upper limit block (30) is further installed on the upper die device (1), and a lower limit block (31) matching with the upper limit block (30) is installed on the lower die device (2).