Tubular beam bending die

Abstract

The utility model discloses a tubular beam bending die. The tubular beam bending die comprises a lower die holder and an upper die holder, a lower die is arranged at the upper end of the lower die holder, and a movable groove is formed in the middle of the lower die; an upper die is arranged at the lower end of the upper die base and corresponds to the movable groove. A movable template is arranged in the movable groove, and the movable template can lift up and down along the movable groove; the two ends of the lower die are connected with bending auxiliary pieces respectively. The bending auxiliary parts which are identical in structure and symmetrical are arranged at the two ends of the lower die, stable supporting and guiding can be provided in the bending process of the tubular beam, the precision and consistency of products are further ensured, meanwhile, due to the design of the bending compression rollers, the tubular beam can be smoother in the bending process, and the defects such as wrinkles are reduced; and through the design of a plurality of limiting grooves and guide grooves, the stability and accuracy of the die in the working process are ensured, so that the production efficiency is greatly improved, the production cost is reduced, and substantial progress is brought to the development of the automobile industry.

Description

Technical Field

[0001] The utility model belongs to the technical field of moulds, and particularly relates to a tube beam bending mould. Background Art

[0002] In the automotive industry, the tube beam is the framework of the front fascia assembly or the instrument panel assembly of the vehicle, and is a key link to ensure the accuracy of the vehicle assembly. The quality of the tube beam directly affects the qualification of the vehicle assembly.

[0003] However, there are many deficiencies in the current widely used tube bending machine forming process. When bending the tube beam with this traditional process, it often causes material wear, necking deformation at the bending part, and even wrinkles, which seriously affect the quality of the product. Moreover, frequent manual correction is required, not only the work efficiency is low, but also it is difficult to ensure the consistency of the product, which undoubtedly greatly reduces the production efficiency of the product. Summary of the Invention

[0004] In view of this, the purpose of the utility model is to provide a tube beam bending mould to solve the problems put forward in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A tube beam bending mould includes a lower die base and an upper die base; a lower die is arranged at the upper end of the lower die base, and an activity groove is formed in the middle of the lower die; an upper die is arranged at the lower end of the upper die base, and the upper die is correspondingly arranged with the activity groove; an activity template is arranged in the activity groove, and the activity template can move up and down along the activity groove; bending auxiliary parts are respectively connected to both ends of the lower die, and the bending auxiliary parts have the same structure and are symmetrically arranged.

[0007] Preferably, sliding rods are respectively arranged at both ends of the activity template, and the lower ends of the sliding rods penetrate downward through the lower die base and are slidably connected with the lower die base.

[0008] Preferably, a plurality of positioning and installation holes are formed at the bottom of the activity groove, and rectangular springs are respectively arranged in each positioning and installation hole; the lower ends of the rectangular springs penetrate through the positioning and installation holes and are fixedly connected with the lower die base, and the upper ends of the rectangular springs are abutted against the bottom of the activity template.

[0009] Preferably, a first limiting groove is formed at the upper end of the activity template along the length direction thereof.

[0010] Preferably, the bending auxiliary part includes a fixed block, and both sides of the fixed block are fixedly connected with the long side of the lower die; a bending pressure roller is arranged on one side of the fixed block close to the activity template, and both ends of the bending pressure roller are connected with the long side of the lower die.

[0011] Preferably, an installation hole is provided inside the fixed block, and a spring and a movable rod are arranged in the installation hole; one end of the movable rod is fixedly connected to the bottom of the installation hole through the spring, and the other end of the movable rod abuts against the outer side wall of the bending roller.

[0012] Preferably, waist-shaped holes are provided on the long side of the lower die, and both ends of the bending roller are respectively arranged in the waist-shaped holes and are movably connected thereto.

[0013] Preferably, a second limiting groove is provided at the top end of the fixed block, and the second limiting groove and the first limiting groove provided at the upper end of the movable template are at the same horizontal height.

[0014] Preferably, an annular guiding groove is provided in the middle of the bending roller, and the annular guiding groove corresponds to the second limiting groove.

[0015] Preferably, the notch of the second limiting groove is inclined towards one side of the annular guiding groove.

[0016] Preferably, a third limiting groove is provided at the lower end of the upper die, and the third limiting groove corresponds to the first limiting groove provided on the movable template.

[0017] Preferably, arc-shaped pressing surfaces are respectively provided at both ends of the upper die, and an avoidance groove adapted to the arc-shaped pressing surface is provided below the inner side of the fixed block.

[0018] Preferably, single-liner linear bearings are respectively provided at both ends of the lower die base, and guide shafts are arranged inside the single-liner linear bearings; one end of the guide shaft is slidably connected to the single-liner linear bearing, and the other end of the guide shaft is fixedly connected to the upper die base.

[0019] Compared with the prior art, the technical solution of the present application has the following beneficial technical effects: By providing bending auxiliary members with the same and symmetrical structures at both ends of the lower die, the present utility model can provide stable support and guidance during the tube beam bending process, further ensuring the accuracy and consistency of the product. At the same time, the design of the bending roller also enables the tube beam to be smoother during the bending process, reducing the generation of defects such as wrinkles. Through the design of multiple limiting grooves and guiding grooves, the stability and accuracy of the mold during the working process are ensured, thereby greatly improving the production efficiency. By optimizing the structural design of the upper die and the lower die, not only the manual correction link is reduced, but also the consistency of the product is better guaranteed, thereby further reducing the production cost, and effectively solving the problems existing in the existing tube beam bending technology, improving not only the product quality and production efficiency, but also reducing the production cost, bringing substantial progress to the development of the automotive industry.

[0020] The above description is only an overview of the technical solution of the present utility model. In order to better understand the technical means of the present utility model and implement it according to the content of the specification, the following is a detailed description of the preferred embodiment of the present utility model in conjunction with the accompanying drawings. Description of the Drawings

[0021] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, but do not constitute a limitation to the present utility model. In the drawings:

[0022] Figure 1 is a schematic structural view of the present utility model;

[0023] Figure 2 is a schematic structural view of the connection between the lower die and the lower die base of the present utility model;

[0024] Figure 3 is a schematic structural view of the interior of the lower die of the present utility model;

[0025] Figure 4 is a schematic structural view of the connection between the upper die and the upper die base of the present utility model;

[0026] Figure 5 is a schematic structural view of the bottom of the upper die of the present utility model.

[0027] Wherein: 1. Lower die base; 2. Upper die base; 3. Single-liner linear bearing; 4. Guide shaft; 5. Lower die; 6. Movable groove; 7. Movable template; 8. Upper die; 9. Bending auxiliary part; 901. Fixed block; 902. Bending pressure roller; 903. Installation hole; 904. Movable rod; 10. Slide rod; 11. Positioning installation hole; 12. Rectangular spring; 13. First limiting groove; 14. Waist-shaped hole; 15. Second limiting groove; 16. Annular guiding groove; 17. Third limiting groove; 18. Arc-shaped extrusion surface; 19. Avoidance groove. Detailed Embodiment

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] Please refer to Figures 1 to 5 For achieving the above object, the present utility model provides the following technical solutions:

[0030] A tube beam bending die includes a lower die base 1 and an upper die base 2. Single-lined linear bearings 3 are respectively arranged at both ends of the lower die base 1. A guide shaft 4 is arranged inside the single-lined linear bearing 3. The lower end of the guide shaft 4 is slidably connected to the single-lined linear bearing 3, and the upper end of the guide shaft 4 is fixedly connected to the upper die base 2. Through the sliding fit between the guide shaft 4 and the single-lined linear bearing 3, the upper die base 2 can slide stably and accurately on the lower die base 1, providing a solid foundation for the high-precision work of the die. An upper die 5 is arranged at the upper end of the lower die base 1, and an activity groove 6 is opened in the middle of the lower die 5. An activity template 7 is arranged in the activity groove 6, and the activity template 7 can move up and down along the activity groove 6. The activity groove 6 not only provides a movement space for the activity template 7, but also ensures the smoothness and precision of the lifting of the activity template 7 through precise design. The lower end of the upper die base 2 is provided with an upper die 8, and the upper die 8 corresponds precisely to the activity groove 6 of the lower die 5. When the upper die base 2 and the lower die base 1 are closed, the upper die 8 can accurately enter the activity groove 6 and act together with the activity template 7 to bend the tube beam precisely. Bending auxiliary parts 9 are respectively connected to both ends of the lower die 5. The two bending auxiliary parts 9 have the same structure and are symmetrically arranged. The bending auxiliary parts 9 play a key role in supporting and guiding during the tube beam bending process, ensuring the stability and precision of the bending. It not only significantly improves the precision and efficiency of tube beam bending, but also enhances the versatility and flexibility of the die, bringing new breakthroughs to the die technology field.

[0031] Please refer to Figure 2 、 Figure 3 As an embodiment of the present invention, slide rods 10 are respectively arranged at both ends of the activity template 7. The lower ends of the slide rods 10 penetrate downward through the lower die base 1 and are slidably connected thereto, ensuring the stable and flexible movement of the activity template 7 in the vertical direction. A plurality of positioning and installation holes 11 are opened at the bottom of the activity groove 6, and a rectangular spring 12 is respectively arranged in each positioning and installation hole 11. The lower end of the rectangular spring 12 penetrates through the positioning and installation hole 11 and is fixedly connected to the lower die base 1, and the upper end of the rectangular spring 12 abuts against the bottom of the activity template 7. A first limiting groove 13 is opened at the upper end of the activity template 7 along its length direction, and the first limiting groove 13 is used to place the tube beam and play a limiting role on the tube beam.

[0032] In the above-described solution, the key to realizing the stable lifting of the movable template 7 is to provide slide bars 10 at the bottom ends of both sides of the movable template 7. The slide bars 10 penetrate through the lower die base 1 and form a sliding connection therewith, ensuring the stability and smoothness of the movable template 7 during the lifting process. This not only reduces the swaying of the movable template 7 during movement but also improves the overall rigidity of the mold. The rectangular spring 12 installed at the bottom of the movable slot 6 provides a constant restoring force for the movable template 7, thus ensuring uniform force application and high-precision forming during the bending process. When the movable template 7 is lowered under the action of an external force, the rectangular spring 12 is compressed and stores elastic potential energy. When the external force disappears, the rectangular spring 12 quickly releases energy and pushes the movable template 7 to reset. The mutual cooperation between the rectangular spring 12 and the slide bars 10 not only improves the response speed of the mold but also ensures the accuracy of the position of the movable template 7. The first limiting groove 13 is opened along the length direction at the upper end of the movable template 7. The first limiting groove 13 ensures the precise positioning of the pipe beam during the bending process and prevents its improper movement in the mold. This design not only simplifies the positioning process of the pipe beam but also greatly improves the bending accuracy and consistency.

[0033] Please refer to Figure 2 , Figure 3 , as an embodiment of the present invention, the bending auxiliary member 9 includes a fixed block 901. The two sides of the fixed block 901 are respectively fixedly connected to the long side edges of the lower die 5. A bending pressure roller 902 is provided on one side of the fixed block 901 close to the movable template 7. The two ends of the bending pressure roller 902 are respectively connected to the long side edges of the lower die 5. An installation hole 903 is opened inside the fixed block 901. A spring (not shown in the figure) and a movable rod 904 are provided in the installation hole 903. One end of the movable rod 904 is fixedly connected to the bottom of the installation hole 903 through the spring. The other end of the movable rod 904 abuts against the outer wall of the bending pressure roller 902. A waist-shaped hole 14 is opened on the long side edge of the lower die 5. The two ends of the bending pressure roller 902 are respectively arranged in the waist-shaped hole 14 and are movably connected thereto.

[0034] In the above-described solution, the fixed block 901 is firmly connected to the long side of the lower die 5. The fixed block 901 not only provides stable support for other components but also ensures the precise position of the entire bending auxiliary member 9. The bending roller 902 is located on the side of the fixed block close to the movable template 7. Both ends of the bending roller 902 are connected to the long side of the lower die 5, enabling the bending roller 902 to provide the necessary support and pressure during the tube beam bending process, which helps the tube beam to be precisely bent according to the predetermined shape and size. One end of the movable rod 904 is connected to the fixed block 901 through a spring, and the other end of the movable rod 904 abuts against the outer wall of the bending roller 902, allowing the bending roller 902 to have a certain elastic buffer when subjected to pressure, protecting the tube beam from damage and ensuring the smooth progress of the bending process. Long waist-shaped holes 14 are opened on the long side of the lower die 5, and both ends of the bending roller 902 are respectively arranged in these waist-shaped holes 14 and are movably connected thereto, greatly improving the flexibility of the bending roller 902 and enabling it to be finely adjusted within a certain range along the waist-shaped holes 14 to meet the requirements of tube beam bending.

[0035] Please refer to Figure 2 , Figure 3 , as an embodiment of the present utility model, a second limiting groove 15 is opened at the top of the fixed block 901, and the second limiting groove 15 and the first limiting groove 13 opened at the upper end of the movable template 7 are at the same horizontal height. An annular guiding groove 16 is opened in the middle of the bending roller 902, and the annular guiding groove 16 corresponds to the second limiting groove 15. The notch of the second limiting groove 15 is inclined toward the side of the annular guiding groove 16.

[0036] In the above-described solution, by opening the second limiting groove 15 at the top of the fixed block 901, and the second limiting groove 15 and the first limiting groove 13 at the upper end of the movable template 7 are at the same horizontal height, this design ensures the precise positioning of the tube beam during the bending process, enabling the tube beam to be stably placed between the two limiting grooves and reducing movement or misalignment during the bending process. An annular guiding groove 16 is opened in the middle of the bending roller 902, and the annular guiding groove 16 corresponds to the second limiting groove 15. The design of the annular guiding groove 16 helps to guide the movement track of the tube beam during the bending process and ensures that it is bent along the predetermined path. The notch of the second limiting groove 15 is inclined toward the side of the annular guiding groove 16. The inclined second limiting groove 15 helps to apply a guiding force to the tube beam during the bending process, enabling it to enter the annular guiding groove 16 more smoothly, thereby improving the accuracy and smoothness of the bending.

[0037] Please refer to Figures 2 to 5, as an embodiment of the present utility model, a third limiting groove 17 is opened at the lower end of the upper die 8, and the third limiting groove 17 corresponds to the first limiting groove 13 opened on the movable template 7; arc-shaped pressing surfaces 18 are respectively opened at both ends of the upper die 8, and an avoidance groove 19 adapted to the arc-shaped pressing surface 18 is opened below the inner side of the fixed block 901.

[0038] In the above-mentioned solution, by opening the third limiting groove 17 at the lower end of the upper die 8, and the third limiting groove 17 corresponds to the first limiting groove 13 on the movable template 7, it is convenient to more accurately position and fix the pipe beam when the upper die 8 and the lower die 5 are closed; arc-shaped pressing surfaces 18 are respectively opened at both ends of the upper die 8, and the arc-shaped pressing surface 18 is used to press the pipe beam during the bending process so that it bends according to a predetermined shape; an avoidance groove 19 adapted to the arc-shaped pressing surface 18 is opened below the inner side of the fixed block 901, and the design of this avoidance groove 19 is to prevent the fixed block 901 from interfering with the arc-shaped pressing surface 18 of the upper die 8 during the bending process and ensure the smooth progress of the bending process.

[0039] Working principle: Before the bending starts, the pipe beam is accurately placed between the first limiting groove 13 and the second limiting groove 15. Since these two limiting grooves are at the same horizontal height, the pipe beam can be stably maintained at its predetermined position, providing an accurate starting point for the subsequent bending process. When the upper die 8 is pressed down to close with the lower die 5, the third limiting groove 17 corresponds to the first limiting groove 13, and the pipe beam is accurately fixed in the mold; as the upper die 8 continues to be pressed down, the arc-shaped pressing surfaces 18 provided below both ends of the upper die 8 start to contact and press the pipe beam, and the pipe beam gradually enters the annular guiding groove 16 of the bending roller 902. Due to the shape design of the arc-shaped pressing surface 18, the pipe beam will gradually bend according to a predetermined shape; during this process, the inclined notch design of the second limiting groove 15 plays a key guiding role, ensuring that the pipe beam can smoothly transition into the annular guiding groove 16, reducing the resistance and friction during the bending process; under the guidance of the annular guiding groove 16, the pipe beam is bent along a predetermined trajectory. Due to the precise correspondence between the annular guiding groove 16 and the second limiting groove 15, the pipe beam can maintain a stable shape and size during the entire bending process, thus achieving a high-precision bending effect; among them, the avoidance groove 19 inside the fixed block 901 provides sufficient space for the arc-shaped pressing surface 18 of the upper die 8, preventing interference between the two, ensuring the smooth progress of the bending process, and improving the bending precision; after the bending is completed, the pipe beam can be conveniently taken out from the mold. Due to the precise design of each limiting groove and guiding groove, the taken-out pipe beam has a consistent shape and size, meeting the production requirements.

[0040] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0041] Finally, it should be noted that the above-described embodiments are only specific embodiments of the present utility model, used to illustrate the technical solutions of the present utility model, rather than limiting it. The protection scope of the present utility model is not limited thereto. Although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: any person skilled in the art within the technical scope disclosed by the present utility model can still modify the technical solutions recorded in the foregoing embodiments or can easily think of changes, or make equivalent replacements for some of the technical features; and these modifications, changes or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model, and should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. A tube beam bending die, comprising a lower die base (1) and an upper die base (2); characterized in that: A lower die (5) is provided at the upper end of the lower die base (1), wherein a movable groove (6) is provided in the middle of the lower die (5); an upper die (8) is provided at the lower end of the upper die base (2), wherein the upper die (8) is arranged corresponding to the movable groove (6); a movable template (7) is provided in the movable groove (6), wherein the movable template (7) rises and falls along the movable groove (6); bending auxiliary parts (9) are respectively connected to both ends of the lower die (5), wherein the bending auxiliary parts (9) have the same structure and are symmetrically arranged.

2. A tube beam bending die according to claim 1, characterized in that: Slide rods (10) are respectively provided at both ends of the movable template (7), wherein the lower end of the slide rod (10) passes through the lower die seat (1) downwardly and is slidably connected thereto; a plurality of positioning and mounting holes (11) are provided at the bottom of the movable groove (6), wherein a rectangular spring (12) is respectively provided in each positioning and mounting hole (11); the lower end of the rectangular spring (12) passes through the positioning and mounting hole (11) and is fixedly connected to the lower die seat (1), wherein the upper end of the rectangular spring (12) abuts against the bottom of the movable template (7).

3. The tube beam bending die according to claim 1, characterized in that: The bending auxiliary component (9) comprises a fixed block (901), wherein both sides of the fixed block (901) are respectively fixedly connected to the long sides of the lower mold (5); a bending roller (902) is provided on the side of the fixed block (901) close to the movable template (7), wherein both ends of the bending roller (902) are respectively connected to the long sides of the lower mold (5); a mounting hole (903) is provided on the inner side of the fixed block (901), wherein a spring and a movable rod (904) are provided in the mounting hole (903); and the top end of the movable rod (904) is in contact with the outer side wall of the bending roller (902).

4. The tube beam bending die according to claim 3, characterized in that: The long side of the lower mold (5) is provided with a waist hole (14), wherein the two ends of the bending roller (902) are respectively arranged in the waist hole (14) and movably connected thereto.

5. The tube beam bending die according to claim 3, characterized in that: The upper end of the movable template (7) is provided with a first limiting groove (13) along its length direction, wherein the top end of the fixed block (901) is provided with a second limiting groove (15); the middle of the bending roller (902) is provided with an annular guide groove (16), wherein the annular guide groove (16) corresponds to the second limiting groove (15).

6. The tube beam bending die according to claim 5, characterized in that: The notch of the second limiting groove (15) is inclined toward one side of the annular guide groove (16).

7. The tube beam bending die according to claim 1, characterized in that: A third limiting groove (17) is provided at the lower end of the upper mold (8), wherein the third limiting groove (17) corresponds to the first limiting groove (13) provided on the movable mold plate (7).

8. The tube beam bending die according to claim 7, characterized in that: Arc-shaped extrusion surfaces (18) are respectively formed at two ends of the upper die (8).

9. The tube beam bending die according to claim 3, characterized in that: An avoidance groove (19) is provided at the lower inner side of the fixing block (901), wherein the avoidance groove (19) is matched with the arc-shaped extrusion surface (18).

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