Efficient press bending forming device

Abstract

The utility model discloses a kind of efficient press bending forming devices, the utility model relates to pipeline bending technical field, including fixed seat, movable seat and core rod positioning structure;Fixed die is provided on the fixed seat, movable limit column and mounting plate are provided on the movable seat, fixed limit column opposite with movable limit column is provided on the fixed seat, elastic fixing and extrusion die are provided on the mounting plate, by core rod positioning structure to the positioning support of stainless steel pipe, then by elastic fixing and pre-pressing mould to stainless steel pipe is pre-locked before press bending, small-angle press bending of stainless steel pipe can be completed by extrusion die extrusion, after using the device to accurately cut stainless steel pipe, it can be press bending forming once, secondary cutting, flaring and subsequent processes such as rounding are omitted, single process replaces multiple links, releases traditional equipment capacity, only first cutting produces waste material, can reduce surplus waste, save raw materials.

Description

Technical Field

[0001] This utility model relates to the field of pipe bending technology, specifically a high-efficiency bending forming device. Background Technology

[0002] When stainless steel pipes need to be bent, a bending machine is required. Existing bending machines, such as the patent document with publication number CN221414584U entitled "A Bending Mechanism for Stainless Steel Pipes", generally use a rotary wheel structure for bending.

[0003] Stainless steel pipes sometimes require small-angle single bends. Continuing with existing bending techniques necessitates multiple processes, including laser cutting, bending, secondary cutting, flaring, and grooving. These numerous processes result in low production efficiency, and secondary cutting leads to material waste. To save raw materials and increase production capacity, it is necessary to develop equipment capable of performing small-angle single bends on stainless steel pipes. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a high-efficiency bending forming device, which solves the problems existing in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency bending forming device, comprising a fixed base, a movable base, and a mandrel positioning structure; a fixed mold is provided on the fixed base, a movable limiting post and a mounting plate are provided on the movable base, a fixed limiting post is provided on the fixed base directly opposite the movable limiting post, an elastic fixing member and an extrusion mold are provided on the mounting plate, and the elastic fixing member is connected to a pre-compression mold fitted to the extrusion mold; the mandrel positioning structure includes a movable mandrel and a fixed mandrel provided on the fixed base, the movable mandrel and the fixed mandrel respectively supporting the two ends of a stainless steel tube, and the fixed mandrel is provided with a positioning groove for positioning the stainless steel tube.

[0006] Preferably, the elastic fixing member is a nitrogen spring, and two nitrogen springs are provided.

[0007] Preferably, the positioning groove is located at the top of the fixing mandrel.

[0008] Preferably, the end of the movable core rod away from the fixed core rod is provided with a connecting rod, and the connecting rod is provided with a handle.

[0009] Preferably, the fixing base is provided with two vertical guide rods, the top of both vertical guide rods are connected to the top block, the handle is located on the front side of the guide rods, and the two ends of the connecting rod are respectively attached to the two guide rods.

[0010] Preferably, one guide rod has a groove 1, and the other guide rod has a through groove and two grooves on the front and rear sides. The through groove communicates with the two grooves 2. The groove 1 and the through groove are both in contact with the bottom block. Both ends of the side of the bottom block can be detachably connected to protrusions that fit with the grooves 2. The bottom block is also provided with a mounting rod. The mounting rod is provided with a roller. The bottom of the roller contacts the flat plate 1. The flat plate 1 is provided with an inclined plate. The inclined plate is provided with a flat plate 2. The flat plate 2 is provided with a vertical rod. At least two round rods connected to the fixed seat pass through the flat plate 1. Nuts are screwed onto the round rods.

[0011] Preferably, the fixed mold is provided with a baffle that contacts the extrusion mold.

[0012] Preferably, the fixed seat is provided with guide post one diagonally, and the movable seat is provided with guide sleeves sleeved on the guide post one diagonally. The fixed mold is provided with a plurality of guide post two, and the extrusion mold and the pre-compression mold are respectively sleeved on each guide post two.

[0013] Preferably, the movable limiting post and the fixed limiting post are arranged diagonally, and the movable limiting post and the fixed limiting post have the same height.

[0014] Preferably, the top of the movable seat is provided with a modular heightening block, and the top of the modular heightening block is provided with a connecting seat.

[0015] This invention provides a high-efficiency bending forming device. Compared with the prior art, it has the following advantages:

[0016] 1. This high-efficiency bending forming device uses a mandrel positioning structure to position and support the stainless steel tube. Then, it uses elastic fasteners and a pre-pressing die to pre-lock the stainless steel tube before bending. The small-angle bending of the stainless steel tube can be completed by extrusion die. After the stainless steel tube is accurately cut, it can be bent in one step, eliminating the need for secondary cutting, flaring, and rounding. A single process replaces multiple steps, releasing the production capacity of traditional equipment. Moreover, only the first cut generates waste, which can reduce the waste of surplus material and save raw materials.

[0017] 2. This high-efficiency bending forming device, by setting fixed limit posts and movable limit posts, can control the accuracy of the pressing depth, ensure the consistency of the bending angle, thereby improving the consistency of the product, and can prevent the equipment from damaging the mold by overpressure and extend its service life.

[0018] 3. This high-efficiency bending forming device, with its connecting rod, handle, guide rod, and top block, facilitates the left-right positioning of the movable mandrel without affecting its vertical movement after bending the stainless steel tube. By pushing the vertical rod, when the roller contacts the second plate, the bottom block is raised to a specified height. At this point, the top and bottom sides of the connecting rod contact the top and bottom blocks respectively, and the movable mandrel is precisely aligned with the stainless steel tube. The connecting rod can then be moved along the top and bottom blocks, improving the accuracy of the worker inserting the movable mandrel into the stainless steel tube and thus increasing production efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a partial exploded view of the overall structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the fixed mold and mandrel positioning structure of this utility model;

[0022] Figure 4 This is a cross-sectional schematic diagram of the fixed mold and fixed mandrel of this utility model;

[0023] Figure 5 This is a schematic diagram of the extrusion die and pre-compression die of this utility model;

[0024] Figure 6 This is a schematic diagram of the guide rod, top block, and bottom block of this utility model.

[0025] In the diagram: 1. Fixed seat; 2. Fixed mold; 3. Movable seat; 4. Movable limit post; 5. Mounting plate; 6. Fixed limit post; 7. Nitrogen spring; 8. Extrusion mold; 9. Pre-compression mold; 10. Fixed mandrel; 11. Positioning groove; 12. Movable mandrel; 13. Connecting rod; 14. Handle; 15. Guide rod; 16. Top block; 17. Groove one; 18. Through groove; 19. Groove two; 20. Bottom block; 21. Protrusion; 22. Mounting rod; 23. Roller; 24. Flat plate one; 25. Inclined plate; 26. Flat plate two; 27. Vertical rod; 28. Round rod; 29. ​​Nut; 30. Die stop; 31. Guide post one; 32. Guide sleeve; 33. Guide post two; 34. Connecting seat; 35. Modular heightening block. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] This device is specifically designed for small-angle single-bend processing of stainless steel pipes, specifically less than 20 degrees. It is not suitable for large-angle or multi-bend pipe fittings. It can replace the traditional bending machine / pipe bending machine process, solving the problems of raw material waste and efficiency. Furthermore, the cutting dimensions of this device have been repeatedly tested in the early stage, and the error is controlled within 12mm to ensure that the length / angle of the pipe fitting after bending meets the requirements.

[0028] See Figures 1-6 This utility model provides the following two technical solutions:

[0029] First embodiment: A high-efficiency bending forming device, including a fixed seat 1, a movable seat 3 and a mandrel positioning structure;

[0030] A fixed mold 2 is provided on the fixed base 1. The fixed mold 2 is provided with a fixed mold cavity that matches the stainless steel tube after bending. A movable limit post 4 and a mounting plate 5 are provided on the movable base 3. A fixed limit post 6 is provided on the fixed base 1 that is directly opposite to the movable limit post 4. By using the fixed limit post 6 and the movable limit post 4, the pressing depth accuracy of the mold can be controlled to ensure the consistency of the bending angle. An elastic fastener and an extrusion mold 8 are provided on the mounting plate 5. The elastic fastener is connected to the pre-pressing mold 9 that is attached to the extrusion mold 8. The pre-pressing mold 9 first contacts the stainless steel tube, so that the elastic fastener is compressed. The stainless steel tube can be pre-locked before bending by the pre-pressing mold 9. The extrusion mold 8 and the pre-pressing mold 9 are also provided with a mold cavity that matches the stainless steel tube after bending.

[0031] The mandrel positioning structure includes a movable mandrel 12 and a fixed mandrel 10 set on a fixed base 1. The movable mandrel 12 and the fixed mandrel 10 respectively support the two ends of the stainless steel tube. The fixed mandrel 10 is provided with a positioning groove 11 for positioning the stainless steel tube. The rear end of the stainless steel tube is pre-cut with a groove that matches the positioning groove 11, so that the stainless steel tube can be locked in place by the positioning groove 11 when it is installed, preventing it from rotating left or right.

[0032] The elastic fastener is a nitrogen spring 7, and there are two nitrogen springs 7. Other elastic elements can also be used, as long as they provide downward pressure to the pre-compression mold 9, which can prevent product displacement during bending, especially for inclined surface processing scenarios in this device.

[0033] The positioning groove 11 is set on the top of the fixing mandrel 10, which makes it easy for workers to align the groove of the stainless steel tube with the positioning groove 11.

[0034] The movable core rod 12 is provided with a connecting rod 13 at the end away from the fixed core rod 10, and a handle 14 is provided on the connecting rod 13 to facilitate the worker to move the movable core rod 12.

[0035] The fixed base 1 is provided with two vertical guide rods 15. The top of the two vertical guide rods 15 is connected to the top block 16. The handle 14 is located in front of the guide rods 15, and the two ends of the connecting rod 13 are respectively attached to the two guide rods 15, which facilitates the positioning of the movable core rod 12 in the left and right directions, and does not affect the up and down movement of the movable core rod 12 after it is bent along with the stainless steel tube.

[0036] After the worker places the stainless steel pipe into the fixed mandrel 10 and positions it through the positioning groove 11, the worker still needs to insert the movable mandrel 12 into the stainless steel pipe. In actual use, it is often difficult to insert the movable mandrel 12 accurately. Therefore, if the height of the movable mandrel 12 can be positioned, it can be combined with the left and right positioning of the guide rods 15 on both sides to improve the accuracy of the worker inserting the movable mandrel 12 into the stainless steel pipe, thereby improving production efficiency. Therefore, a groove 17 is opened on one side of the guide rod 15, and a through groove 18 and two grooves on the front and rear sides are opened on the other side of the guide rod 15. 19, and the through groove 18 is connected to the two side grooves 19. Both the first groove 17 and the through groove 18 are in contact with the bottom block 20. Both ends of the side of the bottom block 20 are detachably connected to protrusions 21 that are in contact with the second groove 19. The bottom block 20 is guided by the first groove 17 on one side and the through groove 18 on the other side to improve its balance. The second groove 19 ensures that the bottom block 20 can only move up and down. The protrusions 21 are detachably connected to the bottom block 20, so that the protrusions 21 can also leave the second groove 19 when disassembling, thus not affecting the disassembly and assembly of the bottom block 20. The bottom block 20 is also provided with Mounting rod 22, with rollers 23 mounted on it. The bottom of rollers 23 contacts flat plate 24. Flat plate 24 has an inclined plate 25, and flat plate 26 is mounted on the inclined plate 25. Flat plate 26 has a vertical rod 27 mounted on it. At least two round rods 28 connected to the fixing base 1 pass through flat plate 24. To prevent flat plate 24 from detaching from the round rods 28, nuts 29 are screwed onto the round rods 28. By moving the vertical rods 27, flat plate 24, inclined plate 25, and flat plate 26 all move backward, causing rollers 23 to successively contact flat plate 24. Rolling on the inclined plate 25 and the flat plate 26 increases the height of the roller 23, thereby moving the bottom block 20 to a specified height. At this point, the top and bottom sides of the connecting rod 13 contact the top block 16 and the bottom block 20 respectively, and the movable mandrel 12 is aligned with the stainless steel tube. Moving the connecting rod 13 along the top block 16 and the bottom block 20 allows the movable mandrel 12 to be inserted into the stainless steel tube. Finally, pulling the vertical rod 27 forward moves the bottom block 20 downward. This does not affect the subsequent bending process. The movable mandrel 12 drives the connecting rod 13 to move downward along the guide rod 15.

[0037] The fixed mold 2 is provided with a stop mold 30 that contacts the extrusion mold 8, which can guide the extrusion mold 8 when it moves downward and improve the mold closing accuracy.

[0038] The fixed base 1 is provided with guide post 31 diagonally, and the movable base 3 is provided with guide sleeve 32 sleeved on the guide post 31 diagonally. The fixed mold 2 is provided with several guide posts 33, and the extrusion mold 8 and the pre-pressing mold 9 are respectively sleeved on each guide post 33, which can further improve the mold closing accuracy.

[0039] The movable limiting post 4 and the fixed limiting post 6 are set diagonally to ensure that the mold is subjected to uniform force and avoid the problem of unilateral deformation. In addition, the movable limiting post 4 and the fixed limiting post 6 are at the same height, which can reduce interference during mold assembly.

[0040] The second implementation differs from the first implementation in that: the top of the movable seat 3 is provided with a modular heightening block 35, which allows the mold to adapt to different height installation requirements, such as equipment with a closed height of 400 or 500 mm. The top of the modular heightening block 35 is provided with a connecting seat 34 connected to the lifting mechanism, which is used for mold closing and bending.

[0041] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0042] In use, the stainless steel tube is precisely laser-cut, and then the back of the stainless steel tube is fitted onto the fixed mandrel 10. The tube is positioned left and right using the positioning groove 11. Next, the connecting rod 13 is positioned left and right using the guide rods 15 on both sides, and then the connecting rod 13 is positioned up and down using the top block 16 and the bottom block 20. The handle 14 can then be used to move the connecting rod 13 to precisely insert the movable mandrel 12 into the front of the stainless steel tube. Next, the bottom block 20 is moved down to avoid obstructing the subsequent downward movement of the connecting rod 13. Finally, both the extrusion die 8 and the pre-pressing die 9 are moved down. The nitrogen spring 7, through its elasticity, keeps the pre-pressing die 9 in place within the stainless steel tube. Before bending, the steel pipe is pre-compressed to prevent displacement during subsequent bending. Then, as it continues to move downward, the extrusion die 8 completes the bending of the stainless steel pipe. When completed, the fixed limiting post 6 contacts the movable limiting post 4, ensuring the bending accuracy. After bending, both ends of the stainless steel pipe are still fitted onto the fixed mandrel 10 and the movable mandrel 12, ensuring the roundness of the pipe opening. This reduces the need for subsequent flaring and rounding processes. Because the stainless steel pipe is precisely cut in the early stage, the need for subsequent secondary cutting is also reduced, thus achieving the three-in-one advantages of saving raw materials, releasing production capacity, and improving accuracy.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency bending forming device, characterized in that: It includes a fixed seat (1), a movable seat (3), and a mandrel positioning structure; The fixed seat (1) is provided with a fixed mold (2), the movable seat (3) is provided with a movable limiting post (4) and a mounting plate (5), the fixed seat (1) is provided with a fixed limiting post (6) facing the movable limiting post (4), the mounting plate (5) is provided with an elastic fixing member and an extrusion mold (8), and the elastic fixing member is connected to a pre-compression mold (9) that is attached to the extrusion mold (8); The mandrel positioning structure includes a movable mandrel (12) and a fixed mandrel (10) set on a fixed base (1). The movable mandrel (12) and the fixed mandrel (10) respectively support the two ends of the stainless steel pipe, and the fixed mandrel (10) is provided with a positioning groove (11) for positioning the stainless steel pipe.

2. The high-efficiency bending forming device according to claim 1, characterized in that: The elastic fastener is a nitrogen spring (7), and two nitrogen springs (7) are provided.

3. The high-efficiency bending forming device according to claim 1, characterized in that: The positioning groove (11) is located on the top of the fixing mandrel (10).

4. The high-efficiency bending forming device according to claim 1, characterized in that: The movable core rod (12) is provided with a connecting rod (13) at the end away from the fixed core rod (10), and a handle (14) is provided on the connecting rod (13).

5. The high-efficiency bending forming device according to claim 4, characterized in that: The fixed base (1) is provided with two vertical guide rods (15), the top of the two vertical guide rods (15) are connected to the top block (16), the handle (14) is located on the front side of the guide rods (15), and the two ends of the connecting rod (13) are respectively attached to the two guide rods (15).

6. The high-efficiency bending forming device according to claim 5, characterized in that: A groove (17) is provided on one side of the guide rod (15), and a through groove (18) and two grooves (19) on the front and rear sides are provided on the other side of the guide rod (15). The through groove (18) is connected to the two grooves (19) on both sides. The groove (17) and the through groove (18) are both in contact with the bottom block (20). Both ends of the side of the bottom block (20) can be detachably connected to protrusions (21) that fit with the grooves (19). The bottom block (20) is also provided with mounting rods (2). 2) The mounting rod (22) is provided with a roller (23), the bottom of the roller (23) is in contact with the first plate (24), and the first plate (24) is provided with an inclined plate (25), the inclined plate (25) is provided with a second plate (26), the second plate (26) is provided with a vertical rod (27), and at least two round rods (28) connected to the fixed seat (1) are passed through the first plate (24), and nuts (29) are screwed onto the round rods (28).

7. The high-efficiency bending forming device according to claim 1, characterized in that: The fixed mold (2) is provided with a baffle (30) that contacts the extrusion mold (8).

8. The high-efficiency bending forming device according to claim 1, characterized in that: The fixed seat (1) is provided with guide post 1 (31) diagonally, and the movable seat (3) is provided with guide sleeve (32) sleeved on guide post 1 (31) diagonally. The fixed mold (2) is provided with a number of guide post 2 (33), and the extrusion mold (8) and pre-compression mold (9) are respectively sleeved on each guide post 2 (33).

9. The high-efficiency bending forming device according to claim 1, characterized in that: The movable limiting post (4) and the fixed limiting post (6) are arranged diagonally, and the movable limiting post (4) and the fixed limiting post (6) have the same height.

10. The high-efficiency bending forming device according to claim 1, characterized in that: The top of the movable seat (3) is provided with a modular heightening block (35), and the top of the modular heightening block (35) is provided with a connecting seat (34).

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