Hard alloy mechanical sealing ring die

Abstract

The utility model provides a hard alloy mechanical sealing ring die which comprises a base, a central column is installed in the center of the top of the base, an outer ring installed on the top of the base is arranged on the outer side of the central column, and a lower die ring and an upper die ring which are in sliding connection with the central column are arranged on the inner side of the outer ring. A shell is installed at the bottom of the base, a lifting mechanism is installed in the shell, and a plurality of evenly-distributed connecting rods are installed at the movable end of the lifting mechanism. Through the arrangement of the lower mold ring, the lifting mechanism and the connecting rods, after pressing is completed, the lifting mechanism is started, the lower mold ring can be jacked up through the connecting rods, a sealing ring blank on the lower mold ring is pushed out of the inner side of an outer ring, manual demolding of workers is not needed, and through the arrangement of the connecting rods, the sealing ring blank can be conveniently taken out. The ejection force applied to the sealing ring blank on the lower die ring is more uniform, and the problem that the blank is broken and damaged due to uneven stress during ejection is avoided.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and more specifically, to a cemented carbide mechanical seal ring mold. Background Technology

[0002] Hard alloy sealing rings are high-performance sealing components. They are primarily made of hard alloy material, which possesses excellent properties such as high hardness, wear resistance, and corrosion resistance. In industrial applications, hard alloy sealing rings can operate stably under high temperature, high pressure, and various corrosive media. Moreover, through precision machining processes, they can achieve high dimensional accuracy and surface finish, further enhancing the sealing effect, thus playing a crucial role in the field of mechanical seals. The machining process for hard alloy sealing rings involves mixing hard alloy raw material powder in a specific ratio, then placing the mixed powder into a mold and pressing it under high pressure. This pressing process initially shapes the powder into the form of a sealing ring before high-temperature sintering.

[0003] A search revealed Chinese patent application number 201921366284.0, which discloses a cemented carbide mechanical seal ring mold, relating to the technical field of sealing rings. This patent solves the problem that, when cemented carbide is placed in a mold and pressurized, the cemented carbide powder is inconvenient to remove after processing because the mold is an integral unit. The mold includes a base, a connecting post on the base, a lower mold ring passing through the connecting post, an upper mold ring passing through the connecting post and cooperating with the lower mold ring, and an outer ring fitted between the upper and lower mold rings, with a fixing ring on the outer ring. This invention facilitates disassembly and removal of the processed cemented carbide mechanical seal ring. However, the aforementioned patent has the following shortcomings: the internal structure of the initially pressed sealing ring blank is not stable enough, and its overall strength is limited. During manual demolding, it is prone to cracking or breakage due to uneven stress. Furthermore, during continuous pressing, the outer ring is prone to deformation and cracking due to the pressure during molding. Therefore, this utility model proposes a new solution. Utility Model Content

[0004] The purpose of this utility model is to solve the problems in the above-mentioned patent where the internal structure of the sealing ring blank in the initial pressing is not stable enough, the overall strength is limited, and it is easy to crack or break due to uneven stress during manual demolding. Moreover, the outer ring is prone to deformation and cracking due to the pressure during molding during continuous pressing. Therefore, a cemented carbide mechanical sealing ring mold is proposed.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A cemented carbide mechanical seal ring mold was developed to address the aforementioned issues.

[0007] The present invention is as follows:

[0008] The device includes a base, a central column installed at the top center of the base, an outer ring installed on the top of the base on the outer side of the central column, a lower mold ring and an upper mold ring slidably connected to the central column on the inner side of the outer ring, a housing installed at the bottom of the base, a lifting mechanism installed inside the housing, a plurality of evenly distributed connecting rods installed at the moving end of the lifting mechanism, all of the plurality of connecting rods passing through the base and connected to the bottom of the lower mold ring, a limit plate installed at the top of the upper mold ring, a plurality of reinforcing rings installed on the outer side of the outer ring, and a guide sleeve located outside the reinforcing rings fixedly installed on the outer side of the limit plate.

[0009] As a preferred technical solution of this utility model, the base is provided with a plurality of first through holes located on the outside of the central column, and the connecting rod is slidably connected to the base through the first through holes.

[0010] As a preferred technical solution of this utility model, the top of the base is fixedly connected to a connecting cylinder located outside the outer ring, and the outer wall of the outer ring and the inner wall of the connecting cylinder are both provided with mutually matching threads.

[0011] As a preferred technical solution of this utility model, a first bolt threadedly connected to the limiting plate is installed through the limiting plate, and the upper mold ring and the limiting plate are connected to each other by a plurality of the first bolts. A second through hole that cooperates with the central column is opened at the center of the limiting plate.

[0012] As a preferred technical solution of this utility model, the lifting mechanism includes an electric telescopic rod installed inside the housing, the moving end of the electric telescopic rod is fixedly connected to a base plate, and a plurality of evenly distributed mounting seats are installed on the top of the base plate.

[0013] As a preferred technical solution of this utility model, the top of the mounting base is provided with a groove that cooperates with the connecting rod, the bottom end of the connecting rod is inserted into the interior of the mounting base through the groove, a second bolt is threaded onto the mounting base, and both the connecting rod and the mounting base are provided with screw holes that cooperate with the second bolt.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] In the solution of this utility model:

[0016] 1. By setting up a lower mold ring, a lifting mechanism and multiple connecting rods, the lifting mechanism can be activated after pressing to lift the lower mold ring through multiple connecting rods, so that the sealing ring blank on the lower mold ring is pushed out to the inside of the outer ring. There is no need for manual demolding by the staff. Moreover, the setting of multiple connecting rods makes the ejection force on the sealing ring blank on the lower mold ring more uniform, avoiding the problem of breakage and damage of the blank due to uneven force during ejection.

[0017] 2. By setting guide sleeves and multiple reinforcing rings, the reinforcing rings surrounding the outer ring can provide overall reinforcement to the outer ring during use, preventing deformation or cracking during continuous use. At the same time, the guide sleeves that descend during the pressing process can also be placed on the outside of the reinforcing rings, providing secondary protection to the outer ring while guiding the upper mold ring, thereby minimizing the problem of deformation and cracking of the outer ring. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall structure of the cemented carbide mechanical seal ring mold provided by this utility model;

[0019] Figure 2 A schematic diagram of the internal structure of the cemented carbide mechanical seal ring mold provided by this utility model;

[0020] Figure 3 A schematic diagram of the base plate structure of the cemented carbide mechanical seal ring mold provided by this utility model;

[0021] Figure 4 A schematic diagram of the base structure of the cemented carbide mechanical seal ring mold provided by this utility model;

[0022] Figure 5 The cemented carbide mechanical seal ring mold provided by this utility model Figure 2 Enlarged view of the structure at point A.

[0023] The image shows:

[0024] 1. Base; 2. Guide sleeve; 3. Limiting plate; 4. Housing; 5. Lower mold ring; 6. Upper mold ring; 7. Outer ring; 8. Center column; 9. Lifting mechanism; 10. Connecting rod; 11. Reinforcing ring; 12. Connecting cylinder; 13. First through hole; 14. First bolt; 15. Second through hole; 901. Electric telescopic rod; 902. Base plate; 903. Mounting seat; 904. Second bolt. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0026] like Figures 1-5 As shown, this embodiment proposes a cemented carbide mechanical seal ring mold, including a base 1, a central column 8 installed at the top center of the base 1, an outer ring 7 installed on the top of the base 1 on the outer side of the central column 8, and a lower mold ring 5 and an upper mold ring 6 slidably connected to the central column 8 on the inner side of the outer ring 7. A housing 4 is installed at the bottom of the base 1, and a lifting mechanism 9 is installed inside the housing 4. Multiple evenly distributed connecting rods 10 are installed at the moving end of the lifting mechanism 9. The multiple connecting rods 10 all penetrate the base 1 and are connected to the bottom of the lower mold ring 5. By setting up the lower mold ring 5, the lifting mechanism 9 and the multiple connecting rods 10, after pressing, activating the lifting mechanism 9 can lift the lower mold ring 5 through the multiple connecting rods 10, so that the sealing ring blank on the lower mold ring 5 is pushed out to the inner side of the outer ring 7, without the need for manual demolding by the operator. Furthermore, the arrangement of multiple connecting rods 10 ensures that the ejection force on the sealing ring blank on the lower die ring 5 is more uniform, preventing the blank from breaking or being damaged due to uneven force during ejection. A limiting plate 3 is installed on the top of the upper die ring 6, and multiple reinforcing rings 11 are installed on the outer side of the outer ring 7. A guide sleeve 2 is fixedly installed on the outer side of the limiting plate 3, located outside the reinforcing ring 11. By setting the guide sleeve 2 and multiple reinforcing rings 11, the reinforcing ring 11 surrounding the outer side of the outer ring 7 can provide overall reinforcement to the outer ring 7 during use, preventing deformation or cracking during continuous use. At the same time, the guide sleeve 2, which descends during the pressing process, can also be placed on the outer side of the reinforcing ring 11, providing secondary protection to the outer ring 7 while guiding the upper die ring 6, thereby minimizing the deformation and cracking of the outer ring 7.

[0027] like Figure 2 and Figure 4 As shown, in a preferred embodiment, based on the above method, the base 1 is further provided with a plurality of first through holes 13 located outside the central column 8, and the connecting rod 10 is slidably connected to the base 1 through the first through holes 13. It should be noted that the first through holes 13 facilitate the connection of the connecting rod 10 through the base 1 and the bottom of the lower mold ring 5.

[0028] like Figure 2 and Figure 4 As shown, in a preferred embodiment, based on the above method, a connecting cylinder 12 located outside the outer ring 7 is fixedly connected to the top of the base 1. Both the outer wall of the outer ring 7 and the inner wall of the connecting cylinder 12 are provided with mating threads. It should be noted that the connecting cylinder 12 facilitates the connection between the outer ring 7 and the base 1, and the outer ring 7, which is threaded to the base 1, is also easy to disassemble and replace.

[0029] like Figure 1 , Figure 2 and Figure 5As shown, in a preferred embodiment, based on the above method, a first bolt 14 threadedly connected to the limiting plate 3 is further installed through it. The upper mold ring 6 and the limiting plate 3 are interconnected by multiple first bolts 14. A second through hole 15 that mates with the central column 8 is provided at the center of the limiting plate 3. It should be noted that the first bolts 14 facilitate the connection between the limiting plate 3 and the upper mold ring 6, and also allow for quick replacement of the upper mold ring 6 when it is worn. The second through hole 15 prevents the central column 8 from hitting the limiting plate 3.

[0030] like Figure 2 and Figure 3 As shown, in a preferred embodiment, based on the above method, the lifting mechanism 9 further includes an electric telescopic rod 901 installed inside the housing 4. The moving end of the electric telescopic rod 901 is fixedly connected to a base plate 902, and a plurality of evenly distributed mounting seats 903 are installed on the top of the base plate 902. It should be noted that when the electric telescopic rod 901 is activated during use, the lower mold ring 5 connected to the connecting rod 10 can be raised or lowered through the base plate 902 and the mounting seats 903.

[0031] like Figure 2 and Figure 3 As shown, in a preferred embodiment, based on the above method, the top of the mounting base 903 is further provided with a groove that mates with the connecting rod 10. The bottom end of the connecting rod 10 is inserted into the interior of the mounting base 903 through the groove. A second bolt 904 is threaded onto the mounting base 903. Both the connecting rod 10 and the mounting base 903 have screw holes that mate with the second bolt 904. It should be noted that the mounting base 903, the screw holes, and the second bolt 904 facilitate the installation of the connecting rod 10 inside the mounting base 903. When it is necessary to disassemble the two, the second bolt 904 can be unscrewed to separate the connecting rod 10 and the mounting base 903.

[0032] Specifically, the working principle of this cemented carbide mechanical seal ring mold is as follows: During use, the limiting plate 3 is installed on the moving end of the pressing equipment, and then the base 1 is installed directly below the limiting plate 3, so that the upper mold ring 6 can enter the inner side of the outer ring 7. During use, the cemented carbide powder on the inner side of the outer ring 7 is squeezed by the upper mold ring 6. After pressing is completed, the limiting plate 3 and the upper mold ring 6 rise and reset. Then, the lifting mechanism 9 is started to push the lower mold ring 5 up through multiple connecting rods 10, so that the lower mold ring 5 pushes the sealing ring blank at its top out of the inner side of the outer ring 7, thus completing the demolding of the sealing ring.

[0033] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present utility model.

Claims

1. A cemented carbide mechanical seal ring mold, comprising a base (1), wherein a central column (8) is mounted at the top center of the base (1), characterized in that, The outer side of the central column (8) is provided with an outer ring (7) installed on the top of the base (1). The inner side of the outer ring (7) is provided with a lower mold ring (5) and an upper mold ring (6) that are slidably connected to the central column (8). The bottom of the base (1) is provided with a housing (4). The inside of the housing (4) is provided with a lifting mechanism (9). The moving end of the lifting mechanism (9) is provided with a plurality of evenly distributed connecting rods (10). The plurality of connecting rods (10) all penetrate the base (1) and are connected to the bottom of the lower mold ring (5). The top of the upper mold ring (6) is provided with a limiting plate (3). The outer side of the outer ring (7) is provided with a plurality of reinforcing rings (11). The outer side of the limiting plate (3) is fixedly provided with a guide sleeve (2) located outside the reinforcing ring (11).

2. The cemented carbide mechanical seal ring mold according to claim 1, characterized in that, The base (1) has a plurality of first through holes (13) located outside the central column (8), and the connecting rod (10) is slidably connected to the base (1) through the first through holes (13).

3. The cemented carbide mechanical seal ring mold according to claim 1, characterized in that, The top of the base (1) is fixedly connected to a connecting cylinder (12) located outside the outer ring (7), and the outer wall of the outer ring (7) and the inner wall of the connecting cylinder (12) are both provided with mutually matching threads.

4. A cemented carbide mechanical seal ring mold according to claim 1, characterized in that, The limiting plate (3) is threadedly installed with a first bolt (14), and the upper mold ring (6) and the limiting plate (3) are connected to each other by a plurality of the first bolts (14). A second through hole (15) that cooperates with the central column (8) is opened at the center of the limiting plate (3).

5. A cemented carbide mechanical seal ring mold according to claim 1, characterized in that, The lifting mechanism (9) includes an electric telescopic rod (901) installed inside the housing (4). The moving end of the electric telescopic rod (901) is fixedly connected to a base plate (902). A plurality of evenly distributed mounting seats (903) are installed on the top of the base plate (902).

6. A cemented carbide mechanical seal ring mold according to claim 5, characterized in that, The top of the mounting base (903) is provided with a groove that cooperates with the connecting rod (10). The bottom end of the connecting rod (10) is inserted into the interior of the mounting base (903) through the groove. A second bolt (904) is threaded onto the mounting base (903). Both the connecting rod (10) and the mounting base (903) are provided with screw holes that cooperate with the second bolt (904).

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