Sealing ring injection mold

Abstract

The invention provides a sealing ring injection mold, which comprises a bottom plate, a first annular bottom groove and a second annular bottom groove, a first annular top groove and a second annular top groove are formed in the top plate at intervals; the positioning piece is arranged between the top plate and the bottom plate to enable the top plate and the bottom plate to be positioned and matched; when the top plate and the bottom plate are positioned and matched, the first annular bottom groove is communicated with the first annular top groove to form a first injection molding cavity, and the second annular bottom groove is communicated with the second annular top groove to form a second injection molding cavity. According to the technical scheme, the problem that in the related technology, the production efficiency is low when an injection mold is used for producing injection finished products is effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, and in particular to a sealing ring injection mold. Background Art

[0002] The injection molding process heats the injection molding material to a molten state and injects the molten injection molding material into a closed injection mold. After the injection molding material in the injection mold cools and solidifies into shape, the injection mold is opened and the injection molded product is taken out.

[0003] The injection mold in the related art includes a top plate and a bottom plate, wherein a bottom groove is provided on the bottom plate, and a top groove is provided on the top plate. When the top plate and the bottom plate are closed, the top groove and the bottom groove are connected to form a closed injection cavity. The molten injection material is injected into the injection cavity so that the injection material can be formed.

[0004] However, an injection mold in the related art can only produce one injection molded product at a time, and the cooling time is relatively long, resulting in low production efficiency when using the injection mold to produce the injection molded product. Summary of the invention

[0005] The main purpose of the present invention is to provide a sealing ring injection mold to solve the problem of low production efficiency of the injection mold in the related art when producing injection molded products.

[0006] In order to achieve the above-mentioned purpose, the present invention provides a sealing ring injection mold, including: a bottom plate, on which a first annular bottom groove and a second annular bottom groove are arranged at intervals; a top plate, on which a first annular top groove and a second annular top groove are arranged at intervals; a positioning member, arranged between the top plate and the bottom plate to position and cooperate with the top plate; wherein, when the top plate and the bottom plate are positioned and cooperated, the first annular bottom groove is connected with the first annular top groove to form a first injection cavity, and the second annular bottom groove is connected with the second annular top groove to form a second injection cavity.

[0007] Furthermore, the positioning member includes a positioning column and a positioning hole arranged between the top plate and the bottom plate, the positioning column is arranged on one of the bottom plate and the top plate, and the positioning hole is arranged on the other of the bottom plate and the top plate. When the positioning column is passed through the positioning hole, the top plate and the bottom plate are positioned and matched.

[0008] Furthermore, the positioning member includes a positioning hole arranged on the top plate and a positioning column arranged on the bottom plate, the positioning hole passes through the upper surface and the lower surface of the top plate, and when the positioning column is passed through the positioning hole, the top plate and the bottom plate are positioned and matched.

[0009] Furthermore, the positioning member also includes a threaded section arranged on the positioning column and a fastener capable of threadably cooperating with the threaded section. When the positioning column is passed through the positioning hole, the threaded section protrudes from the upper surface of the top plate. When the positioning column is passed through the positioning hole, the fastener is threadably cooperating with the threaded section, and when the fastener abuts against the upper surface of the top plate, the top plate and the bottom plate are positioned and cooperating.

[0010] Further, the first annular bottom groove has a first inner ring side wall and a first outer ring side wall, and the second annular bottom groove has a second inner ring side wall and a second outer ring side wall; the diameter of the first inner ring side wall is greater than the diameter of the second inner ring side wall; and / or the diameter of the first outer ring side wall is greater than the diameter of the second outer ring side wall.

[0011] Further, the first bottom wall of the first annular bottom groove is a first plane; and / or the second bottom wall of the second annular bottom groove is a second plane.

[0012] Furthermore, a third annular bottom groove is arranged at intervals with the first annular bottom groove and the second annular bottom groove, and a third annular top groove is arranged at intervals with the first annular top groove and the second annular top groove on the top plate. When the top plate and the bottom plate are positioned and matched, the third annular bottom groove is connected with the third annular top groove to form a third injection cavity; the third bottom wall of the third annular bottom groove is a first arcuate surface, and the top wall of the third annular top groove is a second arcuate surface.

[0013] Furthermore, the first arcuate surface gradually approaches the upper surface of the bottom plate in the direction from inside to outside of the third annular bottom groove; and / or the second arcuate surface gradually approaches the lower surface of the top plate in the direction from inside to outside of the third annular top groove.

[0014] Furthermore, a first injection channel communicating with the first annular bottom groove and a second injection channel communicating with the second annular bottom groove are also provided on the bottom plate.

[0015] Further, the first injection channel passes through the upper surface of the bottom plate, and the first injection channel passes through the side wall of the bottom plate; and / or the second injection channel passes through the upper surface of the bottom plate, and the second injection channel passes through the side wall of the bottom plate.

[0016] According to the technical solution of the present invention, the sealing ring injection mold includes: a bottom plate, a top plate and a positioning member. A first annular bottom groove and a second annular bottom groove are arranged at intervals on the bottom plate. A first annular top groove and a second annular top groove are arranged at intervals on the top plate. The positioning member is arranged between the top plate and the bottom plate to position and match the top plate with the bottom plate. Among them, when the top plate and the bottom plate are positioned and matched, the first annular bottom groove is connected with the first annular top groove to form a first injection cavity, and the second annular bottom groove is connected with the second annular top groove to form a second injection cavity. In this way, the injection molding raw material in a molten state can be injected into the first injection cavity and the second injection cavity, so that the first injection cavity and the second injection cavity can produce injection molded products, thereby improving the production efficiency of the injection mold when producing injection molded products. In addition, when the injection molded products in the first injection cavity and the second injection cavity are cooled, the cooling time is superimposed, which reduces the total time consumption and further improves the production efficiency of the injection mold when producing injection molded products. Therefore, the technical solution of the present application effectively solves the problem of low production efficiency of the injection mold when producing injection molded products in the related art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 A schematic diagram of the three-dimensional structure of a bottom plate of an embodiment of a sealing ring injection mold according to the present invention is shown;

[0019] Figure 2 Shows Figure 1 A schematic diagram of the three-dimensional structure of a top plate of a sealing ring injection mold;

[0020] Figure 3 Shows Figure 1 Schematic diagram of the three-dimensional structure of the top plate and bottom plate of the sealing ring injection mold when they are positioned and matched.

[0021] The above drawings include the following reference numerals:

[0022] 10. bottom plate; 111. first inner ring side wall; 112. first outer ring side wall; 113. first plane; 121. second inner ring side wall; 122. second outer ring side wall; 123. second plane; 13. third annular bottom groove; 131. first arcuate surface; 14. first injection channel; 15. second injection channel;

[0023] 20. top plate; 21. first annular top groove; 22. second annular top groove; 23. third annular top groove; 231. second arc-shaped surface;

[0024] 31. Positioning column; 32. Positioning hole. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0027] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0028] Apply the technical solution of this embodiment, such as Figures 1 to 3 As shown, the sealing ring injection mold includes: a bottom plate 10, a top plate 20 and a positioning member. The bottom plate 10 is provided with a first annular bottom groove and a second annular bottom groove at intervals. The top plate 20 is provided with a first annular top groove 21 and a second annular top groove 22 at intervals. The positioning member is arranged between the top plate 20 and the bottom plate 10 to position and match the top plate 20 with the bottom plate 10. Among them, when the top plate 20 is positioned and matched with the bottom plate 10, the first annular bottom groove is connected with the first annular top groove 21 to form a first injection cavity, and the second annular bottom groove is connected with the second annular top groove 22 to form a second injection cavity.

[0029] In this way, the molten injection molding material can be injected into the first injection molding cavity and the second injection molding cavity, so that the first injection molding cavity and the second injection molding cavity can both produce injection molding products, thereby improving the production efficiency of the injection mold when producing the injection molding products. In addition, when the injection molding products in the first injection molding cavity and the second injection molding cavity are cooled, the cooling time is superimposed, which reduces the total time consumption and further improves the production efficiency of the injection mold when producing the injection molding products. Therefore, the technical solution of this embodiment effectively solves the problem of low production efficiency of the injection mold when producing the injection molding products in the related art.

[0030] like Figures 1 to 3 As shown, the positioning member includes a positioning column 31 and a positioning hole 32 arranged between the top plate 20 and the bottom plate 10. The positioning column 31 is arranged on the bottom plate 10, and the positioning hole 32 is arranged on the top plate 20. When the positioning column 31 is inserted into the positioning hole 32, the top plate 20 and the bottom plate 10 are positioned and matched. The arrangement of the positioning column 31 and the positioning hole 32 further ensures the precise alignment of the top plate 20 and the bottom plate 10 when they are closed, thereby avoiding the dimensional deviation or defect of the finished sealing ring caused by the misalignment of the top plate 20 and the bottom plate 10 during the injection molding process, and improving the precision and quality of the finished product. This precise matching reduces the gap when the mold is closed, helps to improve the filling efficiency of the injection molding raw material, and reduces the waste of raw materials.

[0031] In other embodiments, the positioning holes 32 are disposed on the bottom plate 10 , and the positioning posts 31 are disposed on the top plate 20 .

[0032] In this embodiment, the finished product produced by the sealing ring injection mold of this embodiment is a sealing ring, which is used for a transformer and can prevent oil leakage of the transformer.

[0033] like Figures 1 to 3 As shown, the positioning member includes a positioning hole 32 provided on the top plate 20 and a positioning column 31 provided on the bottom plate 10. The positioning hole 32 passes through the upper surface and the lower surface of the top plate 20, and when the positioning column 31 is inserted into the positioning hole 32, the top plate 20 is positioned and matched with the bottom plate 10. The positioning hole 32 passes through the upper surface and the lower surface of the top plate 20, so that when the positioning column 31 is inserted into the positioning hole 32, the top plate 20 can fall by its own gravity and press on the top of the bottom plate 10, so that the top plate 20 and the bottom plate 10 are more closely fitted, the sealing of the first injection cavity and the second injection cavity is increased, and the precision and quality of the finished product are improved.

[0034] It should be noted that when the top plate 20 and the bottom plate 10 are positioned and matched, the top plate 20 is located above the bottom plate 10. The surface of the top plate 20 facing the bottom plate 10 is the upper surface, and the surface of the top plate 20 facing away from the bottom plate 10 is the lower surface. The surface of the bottom plate 10 facing the top plate 20 is the upper surface, and the surface of the bottom plate 10 facing away from the top plate 20 is the lower surface.

[0035] Furthermore, the positioning member also includes a threaded section arranged on the positioning column 31 and a fastener capable of threading with the threaded section. When the positioning column 31 is inserted into the positioning hole 32, the threaded section protrudes from the upper surface of the top plate 20. When the positioning column 31 is inserted into the positioning hole 32, the fastener is threadedly engaged with the threaded section, and the fastener is abutted against the upper surface of the top plate 20, the top plate 20 is positioned and engaged with the bottom plate 10. By providing the threaded section and the fastener engaged therewith on the positioning column 31, a tight abutment between the top plate 20 and the bottom plate 10 is achieved, and the tightening degree of the fastener can be adjusted according to different injection pressures and raw material characteristics to ensure that the sealing of the injection cavity is moderate, thereby avoiding quality problems of the finished sealing ring caused by overpressure or underpressure. At the same time, this design is also convenient for disassembly and maintenance, reducing the maintenance cost of the mold.

[0036] like Figures 1 to 3 As shown, the first annular bottom groove has a first inner ring side wall 111 and a first outer ring side wall 112, and the second annular bottom groove has a second inner ring side wall 121 and a second outer ring side wall 122. The diameter of the first inner ring side wall 111 is greater than the diameter of the second inner ring side wall 121; and / or, the diameter of the first outer ring side wall 112 is greater than the diameter of the second outer ring side wall 122. The different diameter difference design of the first annular bottom groove and the second annular bottom groove enables the sealing ring injection mold to produce sealing rings of different sizes and specifications, increasing the versatility of the mold. One injection and cooling operation can produce multiple sealing rings of different specifications, improving production efficiency, and reducing the number and cost of changing molds due to changes in product specifications. This design can meet the needs of sealing rings of different transformers without adding additional molds by adjusting the sizes of the first injection cavity and the second injection cavity, thereby improving production efficiency and economic benefits.

[0037] like Figures 1 to 3 As shown, the first bottom wall of the first annular bottom groove is the first plane 113. The second bottom wall of the second annular bottom groove is the second plane 123. The design of the first plane 113 and the second plane 123 provides a flat molding surface for the sealing ring, which helps to ensure the flatness and thickness uniformity of the bottom of the finished sealing ring, and improves the sealing performance of the sealing ring. The design of the first plane 113 and the second plane 123 also helps to evenly distribute the injection molding raw materials, reduce the defects of the finished products caused by uneven distribution of the raw materials, and improve the yield rate.

[0038] In other embodiments, the first bottom wall of the first annular bottom groove is the first plane 113 . Alternatively, the second bottom wall of the second annular bottom groove is the second plane 123 .

[0039] like Figures 1 to 3As shown, the bottom plate 10 is also provided with a third annular bottom groove 13 spaced apart from the first annular bottom groove and the second annular bottom groove, and the top plate 20 is also provided with a third annular top groove 23 spaced apart from the first annular top groove 21 and the second annular top groove 22. When the top plate 20 is positioned and matched with the bottom plate 10, the third annular bottom groove 13 is connected with the third annular top groove 23 to form a third injection cavity. The third bottom wall of the third annular bottom groove 13 is a first arc surface 131, and the top wall of the third annular top groove 23 is a second arc surface 231. The provision of the third injection cavity further increases the production efficiency of the sealing ring injection mold. By using the first arc surface 131 and the second arc surface 231 as the connection interface between the third annular bottom groove 13 and the third annular top groove 23, the fluidity of the injection cavity can be increased, so that the injection molding raw material is easier to fill into the cavity, thereby improving the filling efficiency of the raw material. At the same time, the design of the first arcuate surface 131 and the second arcuate surface 231 can reduce stress concentration during the cooling process, reduce the risk of cracking of the finished product, and ensure the integrity and reliability of the sealing ring.

[0040] In this embodiment, there are a plurality of third annular bottom grooves 13 arranged at intervals, and the inner diameters of the plurality of third annular bottom grooves 13 are all different, or the outer diameters of the plurality of third annular bottom grooves 13 are all different.

[0041] like Figures 1 to 3 As shown, the first arc surface 131 gradually approaches the upper surface of the bottom plate 10 in the direction from the inside to the outside of the third annular bottom groove 13. The second arc surface 231 gradually approaches the lower surface of the top plate 20 in the direction from the inside to the outside of the third annular top groove 23. The design of the first arc surface 131 and the second arc surface 231 enables the molten injection molding material to form a more stable flow state when injected into the third injection molding cavity, which helps to evenly distribute and quickly solidify the injection molding material and shorten the cooling time. The design of the first arc surface 131 and the second arc surface 231 also helps to balance the pressure of the third injection molding cavity during the injection molding process, reducing the deformation of the sealing ring injection mold and the defects of the finished sealing ring.

[0042] In other embodiments, the first arc surface 131 gradually approaches the upper surface of the bottom plate 10 from the inside to the outside of the third annular bottom groove 13. Alternatively, the second arc surface 231 gradually approaches the lower surface of the top plate 20 from the inside to the outside of the third annular top groove 23.

[0043] like Figures 1 to 3As shown, the bottom plate 10 is also provided with a first injection channel 14 connected to the first annular bottom groove and a second injection channel 15 connected to the second annular bottom groove. The first injection channel 14 and the second injection channel 15 provide a path for the injection material to directly enter the first injection cavity and the second injection cavity, reducing the resistance of the material flow and improving the efficiency of the injection process. At the same time, the independent injection channel design makes it possible to control the injection material flow in the first injection cavity and the second injection cavity simultaneously or separately, providing convenience for the production of sealing rings of different specifications.

[0044] like Figures 1 to 3 As shown, the first injection channel 14 passes through the upper surface of the base plate 10, and the first injection channel 14 passes through the side wall of the base plate 10. The second injection channel 15 passes through the upper surface of the base plate 10, and the second injection channel 15 passes through the side wall of the base plate 10. The first injection channel 14 and the second injection channel 15 pass through the upper surface and the side wall of the base plate 10. This design facilitates the alignment of the injection nozzle of the injection molding machine with the mold, reduces the alignment time, and improves production efficiency. At the same time, this layout of the first injection channel 14 and the second injection channel 15 also helps to quickly fill and discharge the injection molding raw materials, avoids interference with subsequent injection molding operations caused by residual raw materials, and ensures the continuity and stability of the injection molding process.

[0045] In other embodiments, the first injection channel 14 passes through the upper surface of the bottom plate 10 and the first injection channel 14 passes through the side wall of the bottom plate 10. Alternatively, the second injection channel 15 passes through the upper surface of the bottom plate 10 and the second injection channel 15 passes through the side wall of the bottom plate 10.

[0046] The inventor found that in recent years, my country's power industry has developed rapidly, and oil-immersed transformers are widely used. However, due to welding quality, seal quality, seal aging, use environment, installation and maintenance, and transportation and hoisting, transformer oil leakage problems frequently occur. Once the transformer leaks oil, the consequences are very serious. It not only affects the appearance and pollutes the environment, but also reduces the oil level and causes a low oil level alarm. It may even cause live joints and switches to operate in an oil-free insulation state, resulting in insulation reduction, breakdown, short circuit, burning, and even explosion. Oil leakage will also cause the transformer to change from a sealed state to a non-sealed state, which will have an adverse effect on the insulation quality and service life of the transformer in the long run. In addition, it will also cause station inspection personnel or maintenance personnel to make incorrect analyses of the good sealing of the capsule in the transformer oil storage cabinet and the correctness of the oil level gauge indication. Since transformer oil leakage itself has already posed a threat to the safe operation of the transformer, and at the same time it is often accompanied by the occurrence of moisture absorption and is difficult to detect, it is easy to form new fault hazards. The glue injection plugging process is a common method for transformer oil leakage treatment. Its advantages are relatively safe, relatively simple operation, and can achieve oil leakage treatment in a short time. Its disadvantages are also obvious. This process is greatly affected by the on-site working environment, especially at the flange weld or elbow corner. The construction is locally limited and the operation cannot be effectively implemented, resulting in poor treatment effect.

[0047] In order to fundamentally solve the above problems, a new type of transformer oil leakage prevention facility has been developed. It is an asbestos-free seal made of organic fibers such as aramid and plant fibers, nitrile rubber and minerals through rolling or copying processes. Asbestos-free sealing materials, aramid fibers, high-temperature resistant synthetic mineral fibers, oil-resistant rubber and other materials are used. Since conventional distribution transformers require sealing rings of 5 or more materials, fixed molds are used to process sealing rings of various shapes. The sealing ring of a new transformer oil leakage prevention facility not only has high strength, but also has good resilience and super anti-penetration performance. The sealing ring solves the problem of transformer oil leakage, is simple to make, and has strong adaptability. One mold can manufacture 5 standard sealing rings at the same time, which is convenient and fast.

[0048] In summary, the technical solution of the present embodiment provides significant technical improvements and effects in terms of positioning accuracy, mold versatility, raw material filling and cooling efficiency, and production process stability and economy. The realization of these technical effects not only improves production efficiency and reduces production costs, but also ensures the quality and reliability of the finished sealing ring, providing strong technical support for the manufacture of transformer oil leakage prevention facilities.

[0049] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0050] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0051] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sealing ring injection mold, characterized in that: include: A bottom plate (10), wherein a first annular bottom groove and a second annular bottom groove are arranged on the bottom plate (10) at intervals; A top plate (20), wherein a first annular top groove (21) and a second annular top groove (22) are arranged at intervals on the top plate (20); A positioning member, arranged between the top plate (20) and the bottom plate (10) to position and match the top plate (20) with the bottom plate (10); When the top plate (20) and the bottom plate (10) are positioned and matched, the first annular bottom groove is connected to the first annular top groove (21) to form a first injection cavity, and the second annular bottom groove is connected to the second annular top groove (22) to form a second injection cavity.

2. The sealing ring injection mold according to claim 1, characterized in that: The positioning member comprises a positioning column (31) and a positioning hole (32) arranged between the top plate (20) and the bottom plate (10); the positioning column (31) is arranged on one of the bottom plate (10) and the top plate (20); the positioning hole (32) is arranged on the other of the bottom plate (10) and the top plate (20); when the positioning column (31) is inserted into the positioning hole (32), the top plate (20) and the bottom plate (10) are positioned and matched.

3. The sealing ring injection mold according to claim 1, characterized in that: The positioning member comprises a positioning hole (32) arranged on the top plate (20) and a positioning column (31) arranged on the bottom plate (10); the positioning hole (32) passes through the upper surface and the lower surface of the top plate (20); when the positioning column (31) is inserted into the positioning hole (32), the top plate (20) and the bottom plate (10) are positioned and matched.

4. The sealing ring injection mold according to claim 3, characterized in that: The positioning member further comprises a threaded section arranged on the positioning column (31) and a fastener capable of threadably cooperating with the threaded section, and when the positioning column (31) is inserted into the positioning hole (32), the threaded section protrudes from the upper surface of the top plate (20); When the positioning column (31) is inserted into the positioning hole (32), the fastener is threadedly matched with the threaded section, and the fastener is abutted against the upper surface of the top plate (20), the top plate (20) and the bottom plate (10) are positioned and matched.

5. The sealing ring injection mold according to claim 1, characterized in that: The first annular bottom groove has a first inner ring side wall (111) and a first outer ring side wall (112), and the second annular bottom groove has a second inner ring side wall (121) and a second outer ring side wall (122); The diameter of the first inner ring sidewall (111) is greater than the diameter of the second inner ring sidewall (121); and / or the diameter of the first outer ring sidewall (112) is greater than the diameter of the second outer ring sidewall (122).

6. The sealing ring injection mold according to claim 1, characterized in that: The first bottom wall of the first annular bottom groove is a first plane (113); and / or the second bottom wall of the second annular bottom groove is a second plane (123).

7. The sealing ring injection mold according to claim 1, characterized in that: The bottom plate (10) is also provided with a third annular bottom groove (13) spaced apart from the first annular bottom groove and the second annular bottom groove, and the top plate (20) is also provided with a third annular top groove (23) spaced apart from the first annular top groove (21) and the second annular top groove (22), and when the top plate (20) and the bottom plate (10) are positioned and matched, the third annular bottom groove (13) is connected to the third annular top groove (23) to form a third injection cavity; The third bottom wall of the third annular bottom groove (13) is a first arc-shaped surface (131), and the top wall of the third annular top groove (23) is a second arc-shaped surface (231).

8. The sealing ring injection mold according to claim 7, characterized in that: The first arc-shaped surface (131) gradually approaches the upper surface of the bottom plate (10) in the direction from the inside to the outside of the third annular bottom groove (13); and / or, The second arc-shaped surface (231) gradually approaches the lower surface of the top plate (20) in a direction from the inside to the outside of the third annular top groove (23).

9. The sealing ring injection mold according to claim 1, characterized in that: The bottom plate (10) is also provided with a first injection channel (14) communicating with the first annular bottom groove and a second injection channel (15) communicating with the second annular bottom groove.

10. The sealing ring injection mold according to claim 9, characterized in that: The first injection channel (14) passes through the upper surface of the bottom plate (10), and the first injection channel (14) passes through the side wall of the bottom plate (10); and / or, The second injection channel (15) passes through the upper surface of the bottom plate (10), and the second injection channel (15) passes through the side wall of the bottom plate (10).

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