Liquid bearing seal tooling

Abstract

The embodiment of the application provides a liquid bearing sealing tool, and relates to the technical field of liquid metal bearing sealing, which comprises an embedded part installed on a base, a shaped groove is formed on the embedded part, a sealing ring and an adapter ring are sequentially installed in the shaped groove, a stepped groove is formed on the inner side wall of the sealing ring, the adapter ring abuts in the stepped groove, one end of the adapter ring away from the sealing ring protrudes out of the shaped groove and forms an outwardly expanding flange, a limiting cylinder is sleeved on the embedded part, the limiting cylinder is used for limiting the radial displacement of the flange at the bottom of the adapter ring, an inner profiling mandrel is slidably arranged in the limiting cylinder, a power source is arranged outside the inner profiling mandrel, the inner profiling mandrel is inserted into the shaped groove, the sealing ring and the adapter ring are extruded into an integrated whole, and the flange is punched into a specified shape in cooperation with the embedded part. The application has the effects of improving positioning accuracy, improving the assembly quality and efficiency of the liquid bearing sealing part.

Description

Technical Field

[0001] This utility model relates to the field of liquid metal bearing sealing technology, and in particular to a liquid bearing sealing fixture. Background Technology

[0002] Liquid metal bearings, also known as liquid bearings, typically consist of a shaft, a bushing, and liquid metal filling the gap between the shaft and the bushing. To prevent leakage of the liquid metal, sealing rings and connecting rings are installed at both ends of the bushing for sealing connection.

[0003] Reference Figure 1 The sealing ring 1 typically includes a first cylindrical body 2 with an open bottom. The opening at the bottom of the first cylindrical body 2 is smaller than the opening at the top. The transition ring 3 typically includes a second cylindrical body 4 at the top and a flange 5 integrally formed with the bottom of the second cylindrical body 4 and turned outward. The inner wall of the first cylindrical body 2 is provided with a stepped groove. The end of the second cylindrical body 2 abuts against the stepped groove. The first cylindrical body 2 and the second cylindrical body 2 are connected into a whole by extrusion, and the flange 5 is stamped into a corresponding shape.

[0004] The sealing performance of the seal ring and transition ring assembly is crucial to ensuring the bearing does not leak oil. Gaps in the assembly can lead to liquid leakage, affecting the bearing's lifespan. Existing assembly fixtures suffer from insufficient positioning accuracy and uncontrollable pressing force, resulting in excessive gaps between the seal ring and transition ring (visible gaps to the naked eye) and a high defect rate. Furthermore, the lack of a clear preliminary inspection structure necessitates additional inspection processes, impacting production efficiency.

[0005] Therefore, it is necessary to design a sealing fixture that combines precise positioning, controllable pressing, and preliminary testing functions to improve the assembly quality and efficiency of liquid bearing sealing components. Utility Model Content

[0006] To address the aforementioned technical problems, this application provides a liquid bearing sealing fixture.

[0007] The liquid bearing sealing fixture provided in this application adopts the following technical solution: A liquid bearing sealing fixture includes an insert mounted on a base. The insert has a forming groove. A sealing ring and a transition ring are sequentially installed within the forming groove. A stepped groove is formed on the inner wall of the sealing ring. The transition ring abuts against the stepped groove. The end of the transition ring away from the sealing ring protrudes outside the forming groove and forms an outwardly expanding flange. A limiting cylinder is fitted onto the insert to limit the radial displacement of the bottom flange of the transition ring. An inner contour mandrel is slidably disposed within the limiting cylinder. A power source is externally connected to the inner contour mandrel. The inner contour mandrel is inserted into the forming groove, compressing the sealing ring and the transition ring into a single unit, while simultaneously causing the flange to be stamped into a specified shape in conjunction with the insert.

[0008] Furthermore, the inner contour mandrel includes a guide post with a larger diameter and a stamping post integrally formed at the end of the guide post. The guide post is slidably connected to the inner wall of the limiting cylinder. A stepped surface is formed between the stamping post and the guide post. The stepped surface is adapted to the end face of the insert and is used for extrusion flanging.

[0009] Furthermore, the insert is provided with at least two positioning pins, and the inner contour spindle is provided with positioning pin holes for passing through the corresponding positioning pins.

[0010] Furthermore, the insert has a through hole for connecting a corresponding positioning pin, and the positioning pin is inserted into the corresponding through hole and movably connected to the through hole.

[0011] Furthermore, the positioning pin has a diameter of 8mm, a length of 40mm, and a fitting clearance of 0.01-0.02mm with the positioning hole of the adapter ring.

[0012] Furthermore, the inner diameter of the limiting cylinder is clearance-fitted with the outer diameter of the adapter ring, with a clearance value of 0.03-0.05 mm.

[0013] Furthermore, the power source driving the movement of the inner contour mandrel is a servo press.

[0014] Furthermore, the servo press is equipped with a pressure sensor for real-time monitoring of the pressure value during the pressing process. Furthermore, the top end of the inner contour mandrel is provided with a guide cone surface with a cone angle of 30°-45°.

[0015] In summary, this application includes at least one of the following beneficial technical effects: the sealing ring and the transition ring are installed in the forming groove, the power source acts on the inner contour mandrel to move into the forming groove, the inner contour mandrel cooperates with the insert, on the one hand, the sealing ring and the transition ring are stamped into one piece, on the other hand, the flange is stamped into a specified shape by the inner contour mandrel and the end face of the insert, the positioning pin plays a positioning role, and the limiting cylinder is used to limit the radial displacement of the flange, thereby improving the accuracy of the formed part. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the sealing ring and the transition ring.

[0017] Figure 2 This is a schematic diagram of the overall structure of an embodiment of this application.

[0018] Figure 3 This is an exploded structural diagram of an embodiment of this application.

[0019] Figure 4 This is a cross-sectional view of an embodiment of this application.

[0020] Explanation of reference numerals in the attached drawings: 1. Sealing ring; 2. First cylindrical body; 3. Adapter ring; 4. Second cylindrical body; 5. Flanged edge; 6. Inner insert; 7. Forming groove; 8. Limiting cylinder; 9. Inner contour mandrel; 10. Guide post; 11. Stamping post; 12. Stepped surface; 13. Positioning pin. Detailed Implementation

[0021] The terminology used in the following embodiments is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. As used in the specification and appended claims of this application, the singular expressions “a,” “an,” “the,” “the,” “the,” and “this” are intended to also include expressions such as “one or more,” unless the context clearly indicates otherwise. It should also be understood that in the following embodiments of this application, “at least one” and “one or more” refer to one, two, or more than two. The term “and / or” is used to describe the relationship between related objects, indicating that three relationships may exist; for example, A and / or B can indicate: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character “ / ” generally indicates that the preceding and following related objects are in an “or” relationship.

[0022] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0023] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0024] This application discloses a liquid bearing sealing fixture, referring to... Figures 1 to 4The device includes an insert 6 fixedly mounted on a base. The insert 6 is cylindrical and has a forming groove 7 coaxially formed on its surface away from the base. A sealing ring 1 and a transition ring 3 are sequentially installed in the forming groove 7. A stepped groove is formed on the inner wall of the sealing ring 1, and the transition ring 3 abuts against the stepped groove. One end of the transition ring 3 away from the sealing ring 1 protrudes out of the forming groove 7, and an outwardly expanding flange 5 is integrally formed at this end. The flange 5 is closed along the circumference of the transition ring 3. A limiting cylinder 8 is fitted on the insert 6. The inner diameter of the limiting cylinder 8 is clearance-fitted with the outer diameter of the transition ring 3, with a clearance value of 0.03-0.05 mm. The limiting cylinder 8 is used to limit the radial deformation of the flange 5 during the stamping process of the transition ring 3.

[0025] Reference Figure 2 , Figure 3 and Figure 4 An inner contour mandrel 9 is slidably disposed inside the limiting cylinder 8. The inner contour mandrel 9 includes a guide post 10 with a larger diameter and slidably connected to the inner wall of the limiting cylinder 8, and a stamping post 11 integrally formed at the end of the guide post 10 and used for stamping the sealing ring 1 and the transition ring 3. A stepped surface 12 is formed between the stamping post 11 and the guide post 10. The stepped surface 12 abuts against and is adapted to the end face of the insert 6 and is used to stamp the flange 5 of the transition ring 3 into the corresponding shape. The top of the stamping post 11 is provided with a guide cone surface with a cone angle of 30°-45°.

[0026] Reference Figure 2 and Figure 4 The inner contour mandrel 9 is inserted into the forming groove 7 through an external power source, and the sealing ring 1 and the adapter ring 3 are squeezed into a whole. The power source that drives the movement of the inner contour mandrel 9 is a servo press. The servo press is equipped with a pressure sensor for real-time monitoring of the pressure value during the pressing process.

[0027] Reference Figure 3 and Figure 4 The insert 6 is provided with at least two positioning pins 13. The diameter of the positioning pin 13 is 8mm and the length is 40mm. The fitting clearance between the positioning pin and the positioning hole of the adapter ring 3 is 0.01-0.02mm. The insert 6 is provided with a through hole for connecting the corresponding positioning pin 13. The positioning pin 13 is inserted into the corresponding through hole and is movably connected to the through hole, which facilitates the replacement of the positioning pin 13. The inner contour spindle 9 is provided with a positioning pin 13 hole for passing through the corresponding positioning pin 13, which facilitates the positioning of the inner contour spindle 9 and prevents the inner contour spindle 9 from rotating.

[0028] The above are merely preferred embodiments of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. Any equivalent modifications or changes made by those skilled in the art based on the content disclosed in the present utility model should be included within the protection scope recorded in the claims.

Claims

1. A liquid bearing sealing fixture, characterized in that: The device includes an insert (6) mounted on a base. The insert (6) has a forming groove (7). A sealing ring (1) and a transition ring (3) are installed in the forming groove (7) in sequence. The inner side wall of the sealing ring (1) has a stepped groove. The transition ring (3) abuts in the stepped groove. The end of the transition ring (3) away from the sealing ring (1) protrudes out of the forming groove (7) and forms an outwardly expanding flange (5). A limiting cylinder (8) is fitted on the insert (6). The limiting cylinder (8) is used to limit the radial displacement of the bottom flange (5) of the transition ring (3). An inner contouring mandrel (9) is slidably arranged inside the limiting cylinder (8). The inner contouring mandrel (9) is connected to a power source. The inner contouring mandrel (9) is inserted into the forming groove (7) and squeezes the sealing ring (1) and the transition ring (3) into a whole. At the same time, the flange (5) is stamped into a specified shape with the end face of the insert (6).

2. The liquid bearing sealing fixture according to claim 1, characterized in that: The inner contour mandrel (9) includes a guide post (10) with a larger diameter and a stamping post (11) with a smaller diameter integrally formed at the end of the guide post (10). The guide post (10) is slidably connected to the inner wall of the limiting cylinder (8). A stepped surface (12) is formed between the stamping post (11) and the guide post (10). The stepped surface (12) is adapted to the end face of the insert (6) and is used for extrusion flanging (5).

3. The liquid bearing sealing fixture according to claim 2, characterized in that: The insert (6) is provided with at least two positioning pins (13), and the inner contour spindle (9) is provided with positioning pin (13) holes for passing through the corresponding positioning pins (13).

4. The liquid bearing sealing fixture according to claim 3, characterized in that: The insert (6) has a through hole for connecting the corresponding positioning pin (13), and the positioning pin (13) is inserted into the corresponding through hole and movably connected to the through hole.

5. A liquid bearing sealing fixture according to claim 4, characterized in that: The positioning pin (13) has a diameter of 8mm and a length of 40mm, and the fitting clearance with the positioning hole of the adapter ring (3) is 0.01-0.02mm; the inner diameter of the limiting cylinder (8) is fitted with the outer diameter of the adapter ring (3) with a clearance value of 0.03-0.05mm.

6. The liquid bearing sealing fixture according to claim 5, characterized in that: The power source driving the inner contour mandrel (9) is a servo press.

7. A liquid bearing sealing fixture according to claim 6, characterized in that: The servo press is equipped with a pressure sensor for real-time monitoring of the pressure value during the pressing process.

8. A liquid bearing sealing fixture according to claim 7, characterized in that: The top of the inner contour mandrel (9) is provided with a guide cone surface with a cone angle of 30°-45°.

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