Metal steel pipe rib upsetting machine

Abstract

The invention relates to a metal steel pipe rib upsetting machine which comprises a workbench, multiple stages of rib upsetting mechanisms installed on the workbench and a driving mechanism driving the rib upsetting mechanisms, each stage of rib upsetting mechanism comprises a rib upsetting punch and a female die used for fixing a metal steel pipe, and a sliding mechanism is further installed on the workbench. And the pier rib punch is mounted on the sliding mechanism. According to the technical scheme, the positioning ribs at different axial positions of the metal steel pipe can be formed step by step through the hierarchical design of the multi-stage rib upsetting mechanism, for example, the positioning ribs close to the pipe end are firstly machined, then the positioning ribs in the middle area are machined, and the risks of size interference and pipe deformation caused by one-time forming of multiple ribs are thoroughly avoided.

Description

Technical Field

[0001] This invention relates to the field of pipe processing technology, and in particular to a metal steel pipe reinforcement machine. Background Technology

[0002] Currently, with the development of the automotive industry, the types of automobiles are increasing, and so are the types of automotive metal pipes required to match them. Automobile standards include China IV, China V, and China VI, and the corresponding metal pipe fittings differ slightly for each standard. Traditional pipe reinforcement processing uses die stamping, which results in significant deformation at the pipe ends after reinforcement, making subsequent pipe assembly difficult. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0004] Therefore, the purpose of this invention is to provide a metal steel pipe reinforcement machine that can not only achieve rapid forming, but also effectively guarantee product dimensions.

[0005] To achieve the above objectives, the present invention provides a metal steel pipe reinforcement machine, including a workbench, a multi-stage reinforcement mechanism mounted on the workbench, and a drive mechanism for driving the reinforcement mechanism. Each stage of the reinforcement mechanism includes a reinforcement punch and a die for fixing the metal steel pipe. A sliding mechanism is also installed on the workbench, and the reinforcement punch is mounted on the sliding mechanism.

[0006] In any of the above technical solutions, preferably, the sliding mechanism includes a slide rail formed on the worktable and a slider slidably connected to the slide rail. Each piercing punch in the piercing mechanism is mounted on the slider, and a forward hydraulic cylinder is mounted on the slider as the driving mechanism. Each piercing punch is connected to the forward hydraulic cylinder.

[0007] In the above technical solution, preferably, the reinforcing punch in each stage of the reinforcing mechanism is located at the same height of the slider, and the slide rail is horizontally mounted on the worktable so that the slider moves horizontally relative to the die.

[0008] In the above technical solution, preferably, the reinforcing punch in each stage of the reinforcing mechanism is located on the same axis as the slider, and the slide rail is vertically mounted on the worktable so that the slider can move up and down relative to the die. The height of the slider is controlled by the lifting cylinder in the drive mechanism.

[0009] In any of the above technical solutions, preferably, the die includes an upper die and a lower die, the upper die and the lower die are symmetrically arranged, and both of their opposite surfaces are provided with arc-shaped grooves adapted to the outer diameter of the metal steel pipe.

[0010] In the above technical solution, preferably, a first positioning block and a second positioning block are provided on the lower mold. The first positioning block is fixed to the second positioning block by bolts, and the end face of the first positioning block is in contact with the end of the metal steel pipe to achieve axial positioning.

[0011] In the above technical solution, preferably, the upper mold is linked with the locking cylinder of the driving mechanism, the lower mold is fixed to the worktable, and the concave molds of each stage of the reinforcement mechanism are arranged sequentially along the processing axis of the metal steel pipe.

[0012] In any of the above technical solutions, preferably, the reinforcing bar punch includes a positioning punch and a mandrel, and the positioning punch has a gap structure inside, the shape of which is the same as the forming contour of the positioning bar to be formed on the metal steel pipe.

[0013] In the above technical solution, preferably, the length of the mandrel exposed above the punch is adapted to the position of the positioning rib to be formed on the metal steel pipe.

[0014] In any of the above technical solutions, preferably, the piercing punch of each stage of the piercing mechanism and the forming surface of the die are in surface contact fit.

[0015] Compared with the prior art, the advantages of the metal steel pipe reinforcement machine provided by the present invention are as follows:

[0016] 1. Multi-stage step-by-step forming design: Different positioning ribs are processed separately by independent punches and dies, avoiding dimensional interference in single forming, and significantly improving the forming accuracy and consistency of positioning ribs.

[0017] 2. The integrated special positioning structure (positioning block, arc groove) is linked with the hydraulic cylinder for clamping, realizing rapid positioning and stable fixation of metal steel pipes, with processing efficiency higher than traditional single-process molds or manual processing.

[0018] 3. It precisely matches the requirements of China VI emission standard for automotive fuel tanks and fuel lines, and specifically addresses the pain point that existing molds cannot meet the stringent dimensional tolerances under the new emission standards.

[0019] 4. It is suitable for processing thin-walled metal steel pipes and adopts a surface contact forming method to reduce pipe deformation, resulting in a significantly higher product qualification rate compared to existing technologies.

[0020] 5. It is modularly compatible with pipe end machines, making installation and disassembly convenient without requiring modification of existing equipment, thus reducing production input costs.

[0021] 6. It has strong structural versatility. By adjusting the forming contours of the punch and die, it can be adapted to the processing of positioning ribs for different types of oil pipes, thus expanding its application range.

[0022] 7. The punch and die forming surface fit precisely, and the dimensional tolerance of the positioning ribs is controllable, which solves the problem of large product size fluctuations in the existing technology.

[0023] 8. The overall structure is simple and easy to process, with low maintenance costs, making it more suitable for large-scale mass production scenarios. Attached Figure Description

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0025] Figure 1 This diagram illustrates the working state of the metal steel pipe reinforcement machine according to an embodiment of the present invention during primary reinforcement processing.

[0026] Figure 2 This diagram illustrates the working state of the metal pipe reinforcement machine according to an embodiment of the present invention during secondary reinforcement processing.

[0027] Figure 3 This diagram illustrates the working state of the metal steel pipe reinforcement machine when it finishes reinforcement processing, according to an embodiment of the present invention.

[0028] Figure 4 This diagram illustrates the working state of the metal pipe reinforcement machine at the end of reinforcement processing according to another embodiment of the present invention.

[0029] Figure 5 A structural diagram of the concave mold in the multi-stage pier reinforcement mechanism involved in the embodiment of the present invention is shown;

[0030] Figure 6 The structural diagram of the primary pier reinforcement punch according to an embodiment of the present invention is shown;

[0031] Figure 7 A structural diagram of the secondary pier reinforcement punch according to an embodiment of the present invention is shown;

[0032] in, Figures 1 to 7 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0033] 1. Worktable; 2. Slide rail; 3. Slider; 4. Forward cylinder; 5. Upper mold; 6. Lower mold; 7. First positioning block; 8. Second positioning block; 9. Metal steel pipe; 10. Locking cylinder; 11. Positioning punch; 12. Mandrel; 13. Gap structure; 14. Positioning rib to be formed; 15. Arc-shaped groove; 16. Lifting cylinder. Detailed Implementation

[0034] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0035] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0036] like Figures 1 to 7 As shown, a metal steel pipe reinforcement machine according to an embodiment of the present invention includes a workbench 1, a multi-stage reinforcement mechanism installed on the workbench 1, and a drive mechanism for driving the reinforcement mechanism. Each stage of the reinforcement mechanism includes a reinforcement punch and a die for fixing the metal steel pipe 9. A sliding mechanism is also installed on the workbench, and the reinforcement punch is installed on the sliding mechanism.

[0037] In this embodiment, the workbench 1, as the core load-bearing component of the equipment, is made of high-strength metal material, which has good rigidity and stability. It provides a reliable installation foundation for the multi-stage reinforcement mechanism, drive mechanism and sliding mechanism, effectively avoiding the forming accuracy deviation caused by equipment vibration during the processing.

[0038] Multi-level reinforcement mechanisms typically have 2-3 levels (expandable according to actual product needs), with each level independently equipped with a reinforcement punch and die. This "tiered" design allows for step-by-step forming of positioning ribs at different axial positions on the metal steel pipe. For example, positioning ribs near the pipe end can be processed first, followed by those in the middle area, completely avoiding the risks of dimensional interference and pipe deformation caused by forming multiple ribs in one go. The forming contour of each level's reinforcement punch perfectly matches the design of the corresponding positioning rib, and the die firmly fixes the steel pipe by fitting the upper and lower dies together, ensuring that the steel pipe does not move during processing.

[0039] like Figures 1 to 4 As shown, in any of the above embodiments, preferably, the sliding mechanism includes a slide rail 2 formed on the worktable 1 and a slider 3 slidably connected to the slide rail 2. The piercing punch in each stage of the piercing mechanism is installed on the slider 3, and a forward hydraulic cylinder 4 is installed on the slider 3 as the driving mechanism. Each piercing punch is connected to the forward hydraulic cylinder 4.

[0040] In this embodiment, the sliding rail 2 and the slider 3 form a structurally stable assembly, ensuring the straightness and alignment of the rib-building punch movement and preventing rib-building dimensional errors caused by movement deviations during processing. The forward hydraulic cylinder 4, driven by hydraulic pressure, can precisely control the punch's feed stroke, ensuring consistent forming amount in each rib-building process. This guarantees the dimensional stability and processing consistency of the rib-building products, meeting the high-precision requirements for pipe rib-building in the automotive, hydraulic, and other fields.

[0041] like Figure 3 As shown, in the above embodiment, preferably, the reinforcing punch in each stage of the reinforcing mechanism is located at the same height of the slider 3, and the slide rail 2 is horizontally mounted on the worktable 1 so that the slider 3 can move horizontally relative to the die.

[0042] In this embodiment, the horizontal slide rail 2 layout ensures the horizontal alignment of the punch and die, resulting in uniform force distribution on the metal steel pipe 9 during processing. This avoids processing misalignment and ensures the dimensional accuracy of the reinforcement. This design is particularly suitable for the reinforcement processing of thin-walled metal steel pipes 9 (such as automotive fuel system steel pipes), effectively controlling dimensional tolerances and meeting the production requirements of high-precision pipe components.

[0043] like Figure 4 As shown, in the above embodiment, preferably, the reinforcing punch in each stage of the reinforcing mechanism is located on the same axis as the slider 3, and the slide rail 2 is vertically mounted on the worktable 1 so that the slider 3 moves up and down relative to the die. The height of the slider 3 is controlled by the lifting cylinder 16 in the drive mechanism.

[0044] In this embodiment, the vertical slide rail 2, together with the lifting cylinder 16, can precisely control the height of the punch, which can be adapted to the reinforcement processing of metal steel pipes 9 at different axial positions, and can also be compatible with the processing needs of pipes of different diameters, greatly improving the versatility and processing range of the equipment, especially suitable for reinforcement processing of multi-reinforcement and complex structure pipes such as hydraulic pipelines and aerospace pipe joints.

[0045] To further stabilize the slider 3 at a certain height, multiple pin holes (not shown) and pins (not shown) that mate with the pin holes can be made on the slider 3 and the slide rail 2. After the lifting cylinder 16 controls the slider 3 to be fixed in the required position, the pins are inserted into the aligned pin holes on the slide rail 2 and the slider 3.

[0046] like Figure 5 As shown, in any of the above embodiments, preferably, the concave mold includes an upper mold 5 and a lower mold 6, the upper mold 5 and the lower mold 6 are symmetrically arranged, and both of them have arc-shaped grooves 15 adapted to the outer diameter of the metal steel pipe 9 on their opposite surfaces.

[0047] In this embodiment, the symmetrical structure of the upper and lower molds and the arc-shaped groove 15 enable precise positioning of the metal steel pipe 9 during processing, avoiding shaking or offset during the process, thereby ensuring the positional and shape accuracy of the reinforcement. This design is particularly suitable for the reinforcement processing of thin-walled metal steel pipes 9 (such as automotive fuel system steel pipes), effectively controlling dimensional deviations caused by pipe shaking and meeting the production requirements of high-precision pipe components.

[0048] like Figure 5 As shown, in the above embodiment, preferably, a first positioning block 7 and a second positioning block 8 are provided on the lower mold 6. The first positioning block 7 is fixed to the second positioning block 8 by bolts. The end face of the first positioning block 7 is in contact with the end of the metal steel pipe 9 to achieve axial positioning.

[0049] In this embodiment, the axial positioning accuracy is high, and the bolt connection method facilitates the adjustment or replacement of positioning blocks according to metal steel pipes 9 of different lengths, improving the equipment's adaptability to various specifications of steel pipes while ensuring positioning reliability. This design can stably control the axial position of steel pipes in the upsetting process of pipes of different lengths, such as automotive fuel steel pipes and hydraulic pipelines, avoiding upsetting dimension deviations caused by axial movement during processing.

[0050] like Figure 3 As shown, in the above embodiment, preferably, the upper mold 5 is linked with the locking cylinder 10 of the driving mechanism, the lower mold 6 is fixed to the worktable 1, and the concave molds of each stage of the reinforcement mechanism are arranged sequentially along the processing axis of the metal steel pipe 9.

[0051] In this embodiment, the locking cylinder 10, when linked, ensures stable clamping force of the upper die 5 on the steel pipe, preventing the steel pipe from loosening during processing. The multiple concave dies are arranged in stages along the processing axis, enabling continuous processing of multi-level reinforcement, which improves production efficiency while ensuring the processing accuracy of each level of reinforcement. This design is suitable for processing high-precision pipes with multiple ribs, such as automotive fuel steel pipes and hydraulic lines, and can meet the dual requirements of processing efficiency and accuracy in mass production.

[0052] like Figure 6 and Figure 7 As shown, in any of the above embodiments, preferably, the rib punch includes a positioning punch 11 and a mandrel 12. The positioning punch 11 has a gap structure 13 inside, and the shape of the gap structure 13 is the same as the forming contour of the positioning rib 14 to be formed on the metal steel pipe 9.

[0053] In this embodiment, the forming contour and the positioning rib are precisely matched, and the cooperation between the mandrel 12 and the punch enhances the rigidity of the punch, which not only ensures the shape accuracy of the positioning rib but also improves the stability of the processing. This design can achieve the dimensional tolerance of the positioning rib within ±0.05mm in the upsetting processing of high-precision pipes such as automotive fuel steel pipes and hydraulic pipelines, meeting the stringent precision requirements of the industry.

[0054] like Figure 6 and Figure 7 As shown, in the above embodiment, preferably, the length of the mandrel 12 exposed above the punch is adapted to the position of the positioning rib 14 to be formed on the metal steel pipe 9.

[0055] In this embodiment, the precise matching of the length of the mandrel 12 with the position of the positioning rib can avoid the problem of displacement during the forming of the rib, ensure the consistency of the position of the positioning rib on each steel pipe, and improve the batch qualification rate of the product. It is especially suitable for processing scenarios of multi-ribbed and long pipe materials.

[0056] like Figure 1 and Figure 2 As shown, in any of the above embodiments, preferably, the piercing punch of each stage of the piercing mechanism and the forming surface of the die are in surface contact fit.

[0057] In this embodiment, surface contact makes the forming force distribution more uniform, which can effectively reduce the deformation of the metal steel pipe 9 (especially thin-walled pipes) and ensure the surface quality and dimensional accuracy of the reinforcing bars. In the processing of thin-walled pipes such as fuel tank pipes for automobiles meeting China VI emission standards, the product qualification rate can be increased from 85% in traditional processes to over 98%, while reducing subsequent assembly problems caused by pipe deformation.

[0058] The working principle of the metal pipe reinforcement machine provided by this invention is as follows:

[0059] When the metal steel pipe 9 reinforcement machine is working, the metal steel pipe 9 is first placed on the lower mold 6, and axial positioning is achieved by the positioning block of the lower mold 6. The upper mold 5 and the locking cylinder 10 are linked to clamp the steel pipe. The sliding mechanism (slide rail 2 and slider 3) drives the reinforcement punch to move, and the forward cylinder 4 drives the punch to feed towards the steel pipe. The positioning punch 11 and the mandrel 12 of the punch cooperate with the die to form reinforcement on the steel pipe. The multi-stage reinforcement mechanism moves sequentially along the processing axis of the metal steel pipe 9, and completes the processing of multiple positioning ribs step by step. The forming surfaces of each punch and the die are fused through surface contact, and finally the multi-stage precise reinforcement processing of the metal steel pipe 9 is achieved.

[0060] This 9-piece metal pipe reinforcement machine is particularly suitable for high-precision pipe components, such as automotive fuel system pipes, hydraulic equipment pipelines, and lightweight aerospace pipe fittings. Taking the fuel tank pipe for China VI emission standards in automobiles as an example, its positioning ribs need to be precisely matched with seals and clamps. The positioning ribs processed by this equipment have advantages in dimensional accuracy and surface flatness, which can directly improve the sealing performance and durability of the fuel system, helping vehicle manufacturers meet stringent emission and reliability standards.

[0061] In this invention, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0062] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0063] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0064] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A metal steel pipe reinforcement machine, comprising a workbench (1), a multi-stage reinforcement mechanism mounted on the workbench (1), and a drive mechanism for driving the reinforcement mechanism, characterized in that, Each of the reinforcement piercing mechanisms includes a reinforcement piercing punch and a die for fixing the metal steel pipe (9). A sliding mechanism is also installed on the working platform, and the reinforcement piercing punch is installed on the sliding mechanism.

2. The metal steel pipe reinforcement machine according to claim 1, characterized in that: The sliding mechanism includes a slide rail (2) formed on the worktable (1) and a slider (3) slidably connected to the slide rail (2). The piercing punch in each stage of the piercing mechanism is installed on the slider (3), and a forward oil cylinder (4) is installed on the slider (3) as the driving mechanism. Each piercing punch is connected to the forward oil cylinder (4).

3. The metal steel pipe reinforcement machine according to claim 2, characterized in that: In each stage of the reinforcement mechanism, the reinforcement punch is located at the same height of the slider (3), and the slide rail (2) is horizontally mounted on the worktable (1) so that the slider (3) moves horizontally relative to the die.

4. The metal steel pipe reinforcement machine according to claim 2, characterized in that: In each stage of the reinforcement mechanism, the reinforcement punch is located on the same axis of the slider (3). The slide rail (2) is vertically mounted on the worktable (1) so that the slider (3) moves up and down relative to the die. The height of the slider (3) is controlled by the lifting cylinder (16) in the drive mechanism.

5. The metal steel pipe reinforcement machine according to any one of claims 1 to 4, characterized in that, The die includes an upper die (5) and a lower die (6). The upper die (5) and the lower die (6) are symmetrically arranged, and both of them have arc-shaped grooves (15) adapted to the outer diameter of the metal steel pipe (9) on their opposite surfaces.

6. The metal steel pipe reinforcement machine according to claim 5, characterized in that, A first positioning block (7) and a second positioning block (8) are provided on the lower mold (6). The first positioning block (7) is fixed to the second positioning block (8) by bolts. The end face of the first positioning block (7) is in contact with the end of the metal steel pipe (9) to achieve axial positioning.

7. The metal steel pipe reinforcement machine according to claim 5, characterized in that, The upper mold (5) is linked with the locking cylinder (10) of the drive mechanism, the lower mold (6) is fixed to the workbench (1), and the concave molds of each stage of the reinforcement mechanism are arranged sequentially along the processing axis of the metal steel pipe (9).

8. The metal steel pipe reinforcement machine according to any one of claims 1 to 4, characterized in that, The rib punch includes a positioning punch (11) and a mandrel (12). The positioning punch (11) has a gap structure (13) inside. The shape of the gap structure (13) is the same as the forming contour of the positioning rib (14) to be formed on the metal steel pipe (9).

9. The metal steel pipe reinforcement machine according to claim 8, characterized in that, The length of the mandrel (12) exposed above the punch is adapted to the position of the positioning rib (14) to be formed on the metal steel pipe (9).

10. The metal steel pipe reinforcement machine according to any one of claims 1 to 4, characterized in that, In each stage of the reinforcement mechanism, the reinforcement punch and the forming surface of the die are in surface contact.

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