Pipeline flanging stamping die
By designing the pipe flange stamping mold, the curved structure of the central column and flange groove can be used to achieve inward flange of the pipe end, which solves the problem of difficulty in flange in the prior art, and achieves a stable flange effect and a convenient extraction process.
Patent Information
- Application Number
- CN202422058260.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-08-23
AI Technical Summary
The prior art is difficult to achieve the processing of inward flange of the end portion in the length direction of the pipe.
A pipe flip stamping mold is designed, including an upper die and a lower die. The upper die has a central column and a flip groove, and the lower die has a central hole. Positioning is achieved through the insertion of the central column into the central hole, and the curved structure of the flip groove makes the top of the pipe flip inward.
The effect of inward flanking of the end of the pipe length direction is achieved, and the structure is stable and easy to remove the flanking pipe.
Smart Images
Figure CN223070228U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of pipe processing, and particularly to a pipe flanging stamping die. Background Art
[0002] Generally, the two end portions in the length direction of a pipe need to be protected to play a strengthening role and prevent being damaged by impact. The adopted method is to turn the edges outwards. However, this flanging method is not suitable for all manufacturing processes, and sometimes it is necessary to turn the edges inwards.
[0003] How to turn the end portions in the length direction of the pipe inwards is the problem to be solved. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a pipe flanging stamping die, which solves the problem of how to turn the end portions in the length direction of the pipe inwards.
[0005] To achieve the above object, the technical scheme adopted by the utility model is as follows:
[0006] The utility model provides a pipe flanging stamping die, which includes an upper die and a lower die. The upper die is located above the lower die, and the lower die is on the moving path of the upper die. It is characterized in that
[0007] The upper die is provided with a central column, and the lower die is provided with a central hole. The central column is used to be inserted into the central hole;
[0008] The upper die is provided with a flanging groove. The flanging groove has a curved surface inside, and the opening end of the flanging groove is wider than the top end. The flanging groove surrounds the outer edge of the central column;
[0009] The upper die and the lower die have two states: separation and fitting.
[0010] Optionally, the lower die includes a base and a top column integrally formed. The outer diameter of the base is larger than the outer diameter of the top column. The top column is arranged on the base, and the central hole is arranged on the top column.
[0011] Further, an upwardly protruding ring wall is arranged on the outer periphery of the top of the top column. The ring wall is aligned with the flanging groove and is on the moving path of the flanging groove.
[0012] Optionally, the extending end of the central column has a rounded corner.
[0013] Optionally, the bottom end of the upper die has an outer ring area and an inner ring area. The outer ring area is located outside the flanging groove, and the inner ring area is located inside the flanging groove. The central column is located at the center of the inner ring area.
[0014] Further, the height of the inner ring area is lower than the height of the outer ring area.
[0015] Due to the application of the above technical solution, the present utility model has the following advantages compared with the prior art:
[0016] For a pipe flanging stamping die of the present utility model, since the upper die and the lower die have two states of separation and fitting, the pipe is sleeved on the lower die, and the pipe should be higher than the lower die. The upper die moves downward and approaches the lower die. The pipe fits against the outer wall of the flanging groove and extends towards the inner wall. The inner wall of the flanging groove has a curved surface. Therefore, the shape of the top of the pipe extends to match the shape of the flanging groove, and the top of the pipe extends inward for flanging. Thus, the problem of how to turn the edge inward at the end of the pipe in the length direction is solved. Description of the Drawings
[0017] Some specific embodiments of the present utility model will be described in detail hereinafter with reference to the drawings in an exemplary but not restrictive manner. The same reference numerals in the drawings denote the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:
[0018] Figure 1 is a perspective view of a pipe flanging stamping die according to a preferred embodiment of the present utility model;
[0019] Figure 2 is Figure 1 the exploded view shown;
[0020] Figure 3 is Figure 2 the bottom view shown;
[0021] Figure 4 is a cross-sectional view of the upper die.
[0022] Among them, the reference numerals are explained as follows:
[0023] 1. Upper die; 2. Lower die; 8. Pipe; 11. Central column; 12. Flanging groove; 13. Curved surface; 14. Guide surface; 15. Outer ring area; 16. Inner ring area; 21. Central hole; 22. Base; 23. Top column; 24. Ring wall. Detailed Embodiments
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments in the present utility model belong to the scope of protection of the present utility model.
[0025] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.
[0026] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.
[0027] As Figure 1 and Figure 2 and Figure 3 shown, it includes an upper die 1 and a lower die 2. The upper die 1 is located above the lower die 2, and the lower die 2 is located on the moving path of the upper die 1. The upper die 1 and the lower die 2 have two states of approaching and fitting. In this application, the lower die 2 is a cylinder, and a pipe 8 is sleeved on the lower die 2, and the position of the pipe 8 is higher than that of the lower die 2, and the upper part of the pipe 8 extends beyond the upper part of the lower die 2.
[0028] The upper die 1 has a central column 11. The central column 11 is located in the middle of the bottom of the upper die 1. The lower die 2 has a central hole 21. The central column 11 is used to be inserted into the central hole 21. When the upper die 1 descends, the central column 11 first enters the central hole 21, so that the upper die 1 and the lower die 2 can be aligned. The central column 11 and the central hole 21 play a role of pre-positioning.
[0029] A flanging groove 12 is provided on the upper die 1. The inner wall of the flanging groove 12 has a curved surface 13. The opening end of the flanging groove 12 is wider than the top end. When the upper die 1 descends, the outer periphery of the top end of the pipe 8 first abuts against the outer wall in the flanging groove 12. Because the wall in the flanging groove 12 has a curved surface 13, when the upper die 1 descends, the outer periphery of the top end of the pipe 8 extends along the curved surface 13 until the outer periphery of the top end of the pipe 8 extends to the inner wall in the flanging groove 12, thus achieving the purpose of inwards flanging at the end in the length direction of the pipe 8.
[0030] The opening end of the flanging groove 12 is wider than the top end, which is convenient for the pipe 8 to enter the flanging groove 12. The flanging groove 12 surrounds the outer edge of the central column 11, and the central column 11 is located at the central position of the flanging groove 12.
[0031] The lower die 2 includes a base 22 and a top column 23 which are integrally formed. The outer diameter of the base 22 is larger than that of the top column 23. The top column 23 is arranged on the base 22. In this way, the stress area of the base 22 is large, and the top column 23 is more stable on the base 22.
[0032] The center hole 21 is disposed on the top column 23 , and the center hole 21 is disposed at the center position of the top end of the top column 23 .
[0033] An upwardly protruding annular wall 24 is provided on the outer periphery of the top of the top column 23. The annular wall 24 surrounds the outer periphery of the top of the top column 23. The annular wall 24 is aligned with the flanging groove 12. The annular wall 24 is located on the moving path of the flanging groove 12. When the top of the pipe 8 extends along the curved surface 13, the annular wall 24 will be wrapped in the top flanging of the pipe 8. In addition, the annular wall 24 can support the top of the flanging groove 12 to limit the descent of the upper mold 1.
[0034] The extended end of the center column 11 has a guide surface 14, and the diameter of the guide surface 14 is smaller than the diameter of the center column 11. In this way, when the center column 11 is to enter the center hole 21, the guide surface 14 can enter the center column 11 first, and then the entire center column 11 enters the center hole 21.
[0035] like Figure 4 As shown, the bottom end of the upper mold 1 has an outer ring area 15 and an inner ring area 16 , the outer ring area 15 is located outside the flanging groove 12 , the inner ring area 16 is located inside the flanging groove 12 , and the center column 11 is located at the center of the inner ring area 16 .
[0036] The height of the inner ring area 16 should be lower than that of the outer ring area 15, so that the inner wall height of the flange groove 12 should be lower than the outer wall height. The flange at the top of the pipe 8 is located on the inner side of the ring wall 24, which can prevent the flange at the top of the pipe 8 from abutting against the upper surface of the top column 23. At the same time, the flange at the top of the pipe 8 will not abut against the inner surface of the ring wall 24. After the upper mold 1 and the lower mold 2 are separated, it is easy to remove the pipe 8 with the flange from the ring wall 24.
[0037] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly. They cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.
Claims
1. A pipe flanging stamping die, comprising an upper die (1) and a lower die (2), the upper die (1) is located above the lower die (2), and the lower die (2) is located on the moving path of the upper die (1), characterized in that the upper die (1) is provided with a central column (11), the lower die (2) is provided with a central hole (21), and the central column (11) is used for being inserted into the central hole (21); the upper die (1) is provided with a flanging groove (12), the inner wall body of the flanging groove (12) has a curved surface (13), the opening end of the flanging groove (12) is wider than the top end, the flanging groove (12) surrounds the outer edge of the central column (11), and the outer periphery of the lower die (2) is used for sleeving a pipe; the upper die (1) and the lower die (2) have two states of approaching and fitting.
2. The pipe flanging stamping die according to claim 1, characterized in that, the lower die (2) includes a base (22) and a top column (23) integrally formed, the outer diameter of the base (22) is larger than the outer diameter of the top column (23), the top column (23) is arranged on the base (22), and the central hole (21) is arranged on the top column (23).
3. The pipe flanging stamping die according to claim 2, wherein, an upwardly protruding ring wall (24) is arranged on the outer periphery of the top of the top column (23), the ring wall (24) is aligned with the flanging groove (12), and the ring wall (24) is located on the moving path of the flanging groove (12).
4. The pipe flanging stamping die according to claim 1, characterized in that, the extending end of the central column (11) has a guiding surface (14).
5. The pipe flanging stamping die according to claim 1, characterized in that, the bottom end of the upper die (1) has an outer ring area (15) and an inner ring area (16), the outer ring area (15) is located outside the flanging groove (12), the inner ring area (16) is located inside the flanging groove (12), and the central column (11) is located at the center of the inner ring area (16).
6. The flanging stamping die for pipeline according to claim 5, wherein the height of the inner ring area (16) is lower than the height of the outer ring area (15).