A kind of closing mechanism in oil-resistant fluorine rubber seal ring forming die

Abstract

The utility model provides a kind of die mechanism for oil-resistant fluorine rubber sealing ring forming die, including upper die and lower die, type cavity and second material channel are opened between upper die and lower die, several temperature-adjusting circulation pipes are opened in upper die and lower die, first material channel and four guide grooves are opened on upper die, first material channel is fixedly connected with feeding cylinder, lower die is fixedly connected with guide column, guide column is slidably connected with guide groove, upper die is fixedly connected with limit pressure-increasing assembly, limit pressure-increasing assembly is slidably connected with guide column.The scheme is driven by electric telescopic rod by setting limit pressure-increasing assembly, and the mode of cooperation with the inclined surface of pressure-increasing locking groove on guide column, after guiding alignment in die closing process, can automatically exert an additional locking and pressure-increasing force, effectively resist material injection pressure, so as to prevent die cavity from expanding, reduce product flash, ensure the precision and consistency of sealing ring size.

Description

Technical Field

[0001] This utility model relates to the technical field of sealing ring production and processing equipment, specifically a mold closing mechanism used in an oil-resistant fluororubber sealing ring molding mold. Background Technology

[0002] Fluororubber (FBR) seals are widely used in sealing applications in the automotive, aerospace, and petrochemical industries due to their excellent oil resistance, high-temperature resistance, and chemical resistance. Their molding typically employs injection molding, which demands extremely high precision in mold closing, injection pressure, and temperature control. Current mold closing mechanisms often rely on simple guide pillars, resulting in insufficient locking force. During high-pressure injection, minor mold cavity expansion can easily occur, leading to flash, burrs, and difficulty in guaranteeing dimensional accuracy.

[0003] Meanwhile, the traditional mold's injection channel design is unreasonable, and the poor fluidity of the fluororubber melt easily leads to uneven injection or insufficient filling. In addition, the lack of an effective collection and treatment mechanism for excess rubber during the molding process not only affects product demolding but also requires frequent machine shutdowns for cleaning, reducing production efficiency.

[0004] Therefore, there is an urgent need for a molding die closing mechanism that can achieve precise mold closing, reliable locking, efficient material injection, and intelligent handling of excess adhesive, in order to meet the needs of large-scale production of high-quality oil-resistant fluororubber sealing rings. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a mold closing mechanism for oil-resistant fluororubber sealing ring molding, solving the problems mentioned in the background art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model is implemented through the following technical solution: a mold closing mechanism for forming an oil-resistant fluororubber sealing ring, characterized in that: it includes an upper mold and a lower mold, a cavity and a second injection channel are provided between the upper mold and the lower mold, a plurality of temperature-regulating circulation pipes are provided in both the upper mold and the lower mold, a first injection channel and four guide grooves are provided on the upper mold, a feed cylinder is fixedly connected to the first injection channel, a guide post is fixedly connected to the lower mold, the guide post is slidably connected to the guide groove, and a limit pressure boosting component is fixedly connected to the upper mold, the limit pressure boosting component is slidably connected to the guide post.

[0009] Preferably, the limiting and pressurizing assembly includes a locking limiting rod, a side plate, and an electric telescopic rod. One end of the electric telescopic rod is fixedly connected to the upper mold, and the other end of the electric telescopic rod is fixedly connected to the locking limiting rod. The locking limiting rod is fixedly connected to the side of the side plate near the upper mold. A limiting groove is provided on the side of the guide groove near the side plate, and a pressurizing locking groove is provided on the side of the guide post near the side plate.

[0010] Preferably, the locking limit rod is slidably connected to the limiting groove, and the end of the locking limit rod near the guide post is provided with an inclined surface, which is adapted to the pressurizing locking groove.

[0011] Preferably, the second injection channel is connected to the cavity, and an overflow channel is provided on the side of the cavity away from the second injection channel, and an overflow storage tank is provided at the end of the overflow channel away from the cavity.

[0012] Preferably, the first injection channel and the second injection channel are connected in a continuous manner, and the diameter of the first injection channel near the end of the second injection channel gradually increases to the diameter of the first injection channel near the end of the feed cylinder.

[0013] Preferably, the feed cylinder has a snap-fit ​​groove inside.

[0014] (III) Beneficial Effects

[0015] This invention provides a mold closing mechanism for use in the molding die of an oil-resistant fluororubber sealing ring.

[0016] It has the following beneficial effects:

[0017] 1. This solution uses a limit pressure boosting component driven by an electric telescopic rod, which works in conjunction with the pressure boosting locking groove on the guide post. This allows an additional locking and pressure boosting force to be automatically applied after the guide is aligned during the mold closing process. This effectively resists the injection pressure, thereby preventing the mold cavity from expanding, reducing flash on the product, and ensuring the precision and consistency of the sealing ring dimensions.

[0018] 2. This solution optimizes the design of the first injection channel to be gradually expanding and sets up an overflow channel and overflow storage tank that connect the cavity, making the injection process smoother and the filling more complete. At the same time, it can guide the excess material that will inevitably be generated during the molding process to the designated cavity in an orderly manner, thereby improving material utilization, ensuring stable product quality, reducing the frequency of mold cleaning and maintenance, and improving overall production efficiency. Attached Figure Description

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

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

[0021] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure of AA;

[0022] Figure 4 for Figure 2 Schematic diagram of the cross-sectional structure of BB;

[0023] Figure 5 for Figure 3 A magnified structural diagram of C.

[0024] In the diagram: 11. Upper mold; 12. Lower mold; 13. Cavity; 14. Temperature regulating circulation pipe; 15. Second injection channel; 16. First injection channel; 17. Feed cylinder; 18. Snap-fit ​​groove; 20. Guide groove; 21. Guide post; 22. Limiting slide groove; 23. Locking limit rod; 24. Pressure boosting locking groove; 25. Side plate; 26. Electric telescopic rod; 27. Overflow channel; 28. Overflow storage tank. Detailed Implementation

[0025] This utility model embodiment provides a mold closing mechanism for use in an oil-resistant fluororubber sealing ring molding die, such as... Figure 1-5 As shown, it includes an upper mold 11, a lower mold 12, a cavity 13, a temperature regulating circulation pipe 14, a second injection channel 15, a first injection channel 16, an inlet cylinder 17, a snap-fit ​​groove 18, a guide groove 20, a guide post 21, a limiting slide groove 22, a locking limiting rod 23, a pressure-boosting locking groove 24, a side plate 25, an electric telescopic rod 26, an overflow channel 27, and an overflow storage tank 28.

[0026] like Figure 1-5 As shown, a cavity 13 and a second injection channel 15 are provided between the upper mold 11 and the lower mold 12. Several temperature-regulating circulation pipes 14 are provided in both the upper mold 11 and the lower mold 12. A first injection channel 16 and four guide grooves 20 are provided on the upper mold 11. A feed cylinder 17 is fixedly connected to the first injection channel 16. A guide post 21 is fixedly connected to the lower mold 12. The guide post 21 is slidably connected to the guide grooves 20. A limit pressure boosting component is fixedly connected to the upper mold 11. The limit pressure boosting component is slidably connected to the guide post 21.

[0027] The limiting and pressurizing assembly includes a locking and limiting rod 23, a side plate 25, and an electric telescopic rod 26. One end of the electric telescopic rod 26 is fixedly connected to the upper mold 11, and the other end of the electric telescopic rod 26 is fixedly connected to the locking and limiting rod 23. The locking and limiting rod 23 is fixedly connected to the side of the side plate 25 near the upper mold 11. A limiting groove 22 is provided on the side of the guide groove 20 near the side plate 25, and a pressurizing locking groove 24 is provided on the side of the guide post 21 near the side plate 25.

[0028] The locking limit rod 23 is slidably connected to the limiting slide groove 22. The end of the locking limit rod 23 near the guide post 21 is provided with an inclined surface. The inclined surface of the locking limit rod 23 is adapted to the pressure-increasing locking groove 24, so that during the mold closing process, the locking limit rod 23 can lock and pressurize the guide post 21 through the drive of the electric telescopic rod 26, ensuring the tight closure of the mold after mold closing and preventing material leakage.

[0029] The first injection channel 16 is connected to the second injection channel 15. The diameter of the first injection channel 16 near the second injection channel 15 gradually increases to the diameter of the first injection channel 16 near the feed cylinder 17. A snap-fit ​​groove 18 is provided in the feed cylinder 17.

[0030] The second injection channel 15 is connected to the cavity 13. An overflow channel 27 is provided on the side of the cavity 13 away from the second injection channel 15. An overflow storage tank 28 is provided at the end of the overflow channel 27 away from the cavity 13.

[0031] This design is used to collect excess fluororubber material that may be generated during the injection process, preventing overflow from affecting the molding quality of the seal and facilitating subsequent cleaning.

[0032] First, the upper mold 11 and the lower mold 12 are initially aligned by sliding the guide post 21 with the guide groove 20 to ensure that the cavity 13 and the second injection channel 15 are aligned.

[0033] Then, the electric telescopic rod 26 is activated, driving the locking limit rod 23 to slide along the limiting slide groove 22, so that its inclined surface engages with the pressure-increasing locking groove 24 on the guide post 21, thereby realizing mold closing locking and pressure increase, ensuring that the mold is tightly closed.

[0034] Next, an external injection device is connected through the feed cylinder 17 and the snap-fit ​​groove 18, and the fluororubber material is injected into the cavity 13 through the first injection channel 16 and the second injection channel 15. At the same time, the temperature regulating circulation pipe 14 introduces a medium to control the mold temperature, and excess material flows into the overflow storage tank 28 through the overflow channel 27.

[0035] Finally, after the material has solidified, reverse the operation of the electric telescopic rod 26 to release the lock, separate the upper mold 11 and the lower mold 12, remove the molding sealing ring, and complete the entire molding process.

[0036] 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 mold closing mechanism for use in an oil-resistant fluororubber sealing ring molding die, characterized in that: The mold includes an upper mold (11) and a lower mold (12). A cavity (13) and a second injection channel (15) are provided between the upper mold (11) and the lower mold (12). Several temperature-regulating circulation pipes (14) are provided in both the upper mold (11) and the lower mold (12). A first injection channel (16) and four guide grooves (20) are provided on the upper mold (11). An inlet cylinder (17) is fixedly connected to the first injection channel (16). A guide post (21) is fixedly connected to the lower mold (12). The guide post (21) is slidably connected to the guide groove (20). A limit pressure boosting component is fixedly connected to the upper mold (11). The limit pressure boosting component is slidably connected to the guide post (21).

2. The mold closing mechanism for an oil-resistant fluororubber sealing ring molding die according to claim 1, characterized in that: The limiting and pressurizing assembly includes a locking limiting rod (23), a side plate (25), and an electric telescopic rod (26). One end of the electric telescopic rod (26) is fixedly connected to the upper mold (11), and the other end of the electric telescopic rod (26) is fixedly connected to the locking limiting rod (23). The locking limiting rod (23) is fixedly connected to one side of the side plate (25) near the upper mold (11). The guide groove (20) near the side plate (25) has a limiting groove (22), and the guide post (21) near the side plate (25) has a pressurizing locking groove (24).

3. The mold closing mechanism for an oil-resistant fluororubber sealing ring molding die according to claim 2, characterized in that: The locking limit rod (23) is slidably connected to the limiting slide groove (22). The end of the locking limit rod (23) near the guide post (21) is provided with an inclined surface, and the inclined surface of the locking limit rod (23) is adapted to the pressurizing locking groove (24).

4. The mold closing mechanism for an oil-resistant fluororubber sealing ring molding die according to claim 2, characterized in that: The second injection channel (15) is connected to the cavity (13). An overflow channel (27) is provided on the side of the cavity (13) away from the second injection channel (15). An overflow storage tank (28) is provided at the end of the overflow channel (27) away from the cavity (13).

5. The mold closing mechanism for an oil-resistant fluororubber sealing ring molding die according to claim 1, characterized in that: The first injection channel (16) is connected to the second injection channel (15), and the diameter of the first injection channel (16) near the end of the second injection channel (15) gradually increases to the diameter of the first injection channel (16) near the end of the feed cylinder (17).

6. The mold closing mechanism for an oil-resistant fluororubber sealing ring molding die according to claim 1, characterized in that: The feed cylinder (17) is provided with a snap-fit ​​groove (18).

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