Silicon nitride ceramic protection tube blank forming die

Abstract

The utility model discloses a silicon nitride ceramic protection tube blank forming die, and belongs to the field of protection tube blank forming. A silicon nitride ceramic protection tube blank forming die comprises a base and further comprises a supporting plate fixedly connected to the base, a lower die is fixedly connected to the supporting plate, an upper die is arranged on the base in a lifting mode, the opening end face of the lower die abuts against the opening end face of the upper die to form a forming groove, and a through hole is formed in the bottom inner wall of the forming groove. A discharging mechanism is arranged on the base, and the output end of the discharging mechanism extends into the through hole; the limiting block is fixedly connected to the side wall of the upper mold, a limiting hole is formed in the limiting block, a locking mechanism is arranged on the lower mold, and when the lower mold abuts against the upper mold, the locking end of the locking mechanism is attached to the inner wall of the limiting hole; according to the utility model, the formed and cooled silicon nitride ceramic protection tube blank can be automatically moved to the outside of the mold forming groove, so that the subsequent blanking work is improved, and the blanking speed is accelerated.

Description

Technical Field

[0001] The utility model relates to the technical field of protection tube blank forming, in particular to a silicon nitride ceramic protection tube blank forming die. Background Art

[0002] Silicon nitride ceramic protective tube is a high-performance ceramic material with silicon nitride as the main component. It is widely used in high-temperature, high-pressure and corrosive environments. Silicon nitride ceramics have become an important material in many industrial fields due to their excellent wear resistance, high-temperature resistance, oxidation resistance and mechanical strength.

[0003] Silicon nitride has received extensive attention and research due to its excellent properties. Silicon nitride is generally processed into ceramic products using reaction sintering and hot pressing sintering methods. The silicon nitride ceramic protective tube blank needs to be produced by hot pressing. However, in actual use, it is found that it is inconvenient for users to cut the formed profiles, which reduces the cutting efficiency. Utility Model Content

[0004] The purpose of the utility model is to solve the problem in the prior art that it is inconvenient for users to cut the formed profiles, thereby reducing the cutting efficiency, and to propose a silicon nitride ceramic protection tube blank forming die.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A silicon nitride ceramic protection tube blank forming mold, including a base, and also includes: a support plate fixedly connected to the base, wherein a lower mold is fixedly connected to the support plate, an upper mold is lifted and lowered on the base, and the lower mold and the open end surface of the upper mold are abutted against each other to form a forming groove, a through hole is provided on the bottom inner wall of the forming groove, a discharge mechanism is provided on the base, and the output end of the discharge mechanism extends into the through hole; a limit block fixedly connected to the side wall of the upper mold, wherein a limit hole is provided on the limit block, and a locking mechanism is provided on the lower mold, when the lower mold and the upper mold are abutted against each other, the locking end of the locking mechanism fits against the inner wall of the limit hole.

[0007] In order to facilitate the lifting and lowering movement of the upper mold, preferably, a hydraulic cylinder is fixedly connected to the base, a connecting plate is fixedly connected to the side wall of the upper mold, and the connecting plate is fixedly connected to the output end of the hydraulic cylinder.

[0008] In order to facilitate the convenient discharge of the protective tube in the lower mold, the discharge mechanism further includes a guide cylinder fixedly connected to the base, a guide rod is slidably connected to the guide cylinder, a piston is provided at one end of the guide rod, and the piston is in contact with the inner wall of the guide cylinder, and the other end of the guide rod extends into the molding groove of the lower mold, and the guide rod is in contact with the inner wall of the through hole.

[0009] In order to facilitate the locking and limiting of the upper and lower molds, preferably, the locking mechanism includes an extension cylinder, an extension plate is fixedly connected to the side wall of the lower mold, the extension cylinder is fixedly connected to the extension plate, an extension rod is slidably connected in the extension cylinder, a piston is provided at one end of the extension rod, and the piston is in contact with the inner wall of the extension cylinder, the other end of the extension rod is fixedly connected to the limiting plate, and the limiting plate cooperates with the limiting block.

[0010] In order to facilitate the lifting and lowering of the guide rod and the extension rod, further, a mounting plate is fixedly connected to the base, a booster cylinder is fixedly connected to the mounting plate, a booster rod is slidably connected to the booster cylinder, a sealing plug is provided at one end of the booster rod, and the sealing plug fits against the inner wall of the booster cylinder, the sealing plug separates the upper cavity and the lower cavity, the upper cavity is connected to the guide cylinder through a first pipe, and the lower cavity is connected to the extension cylinder through a second pipe, a pressing plate is fixedly connected to the connecting plate, and the other end of the booster rod is fixedly connected to the pressing plate.

[0011] In order to facilitate pressing the boost rod, preferably, a pressing plate is fixedly connected to the connecting plate, and the other end of the boost rod is fixedly connected to the pressing plate.

[0012] In order to facilitate cooling of the heat in the mold, preferably, a diversion channel is opened in both the lower mold and the upper mold, and the diversion channel is connected to a water cooler.

[0013] In order to improve the cooling effect of the diversion channel, preferably, the diversion channel is arranged in a curved shape on one side of the forming groove.

[0014] In order to facilitate the injection of raw materials into the forming groove, preferably, a feed port is opened on the top of the upper mold, and the feed port is connected to the forming groove.

[0015] In order to improve the sealing performance of the upper and lower molds, preferably, a sealing groove is provided on the open end surface of the lower mold, and a sealing gasket is provided on the open end surface of the upper mold, and the sealing gasket cooperates with the sealing groove.

[0016] Compared with the prior art, the present invention provides a silicon nitride ceramic protection tube blank forming die, which has the following beneficial effects:

[0017] 1. The silicon nitride ceramic protection tube blank forming die can move the silicon nitride ceramic protection tube blank to the outside of the forming tank by the output end of the discharging mechanism being against the outside of the formed silicon nitride ceramic protection tube blank, thereby improving the subsequent unloading work and accelerating the unloading speed;

[0018] 2. The silicon nitride ceramic protective tube blank forming mold has a sealing groove on the open end face of the lower mold and a sealing gasket on the open end face of the upper mold. The sealing gasket cooperates with the sealing groove to improve the stability and sealing effect of the upper and lower molds when they are against each other.

[0019] The parts not involved in the device are the same as the existing technology or can be implemented using the existing technology. The utility model can automatically move the silicon nitride ceramic protection tube blank after forming and cooling to the outside of the mold forming groove, thereby improving subsequent blanking work and accelerating the blanking speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a three-dimensional structural diagram of a silicon nitride ceramic protection tube blank forming die proposed by the present invention;

[0021] Figure 2 This is a partial structural diagram of a silicon nitride ceramic protection tube blank forming die proposed by the present invention;

[0022] Figure 3 This is a schematic structural diagram of a cross-section of a silicon nitride ceramic protection tube blank forming die proposed in the present invention;

[0023] Figure 4 This is a schematic diagram of the structure inside the upper mold of a silicon nitride ceramic protection tube blank forming mold proposed by the present invention.

[0024] In the figure: 1. Base; 2. Support plate; 3. Lower mold; 4. Upper mold; 5. Diversion channel; 6. Feed port; 7. Hydraulic cylinder; 8. Connecting plate; 9. Pressing plate; 10. Mounting plate; 11. Booster cylinder; 12. Booster rod; 13. Sealing plug; 14. First pipe; 15. Second pipe; 16. Extension plate; 17. Extension cylinder; 18. Extension rod; 19. Limiting plate; 20. Limiting block; 21. Guide cylinder; 22. Guide rod; 23. Sealing groove; 24. Sealing gasket. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings 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.

[0026] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0027] Example:

[0028] Reference Figures 1-4 A silicon nitride ceramic protection tube blank forming mold comprises a base 1, and also comprises: a support plate 2 fixedly connected to the base 1, wherein a lower mold 3 is fixedly connected to the support plate 2, an upper mold 4 is lifted and lowered on the base 1, and the lower mold 3 and the open end surface of the upper mold 4 are abutted against each other to form a forming groove, a through hole is provided on the bottom inner wall of the forming groove, a discharging mechanism is provided on the base 1, and the output end of the discharging mechanism extends into the through hole; a limit block 20 fixedly connected to the side wall of the upper mold 4, wherein a limit hole is provided on the limit block 20, and a locking mechanism is provided on the lower mold 3, when the lower mold 3 and the upper mold 4 are abutted, the locking end of the locking mechanism fits against the inner wall of the limit hole.

[0029] A feed port 6 is provided on the top of the upper mold 4 and is connected to the forming groove. Silicon nitride raw material can be injected into the forming groove in the mold through the feed port 6 to form a silicon nitride ceramic protection tube blank.

[0030] A hydraulic cylinder 7 is fixedly connected to the base 1, and a connecting plate 8 is fixedly connected to the side wall of the upper mold 4. The connecting plate 8 is fixedly connected to the output end of the hydraulic cylinder 7. The hydraulic cylinder 7 can drive the upper mold 4 to rise or fall.

[0031] By abutting the output end of the discharging mechanism against the outside of the formed silicon nitride ceramic protection tube blank, the silicon nitride ceramic protection tube blank can be moved to the outside of the forming tank, thereby improving subsequent unloading work and accelerating the unloading speed.

[0032] The above-mentioned discharging mechanism includes a guide cylinder 21 fixedly connected to the base 1, and a guide rod 22 is slidably connected to the guide cylinder 21. A piston is provided at one end of the guide rod 22, and the piston is in contact with the inner wall of the guide cylinder 21. The other end of the guide rod 22 extends into the molding groove of the lower mold 3, and the guide rod 22 is in contact with the inner wall of the through hole.

[0033] When the silicon nitride ceramic protection tube blank is cooled and formed, the guide rod 22 moves upward in contact with the inner wall of the through hole. At this time, the silicon nitride ceramic protection tube blank will be automatically ejected to the outside by the guide rod 22, thereby facilitating subsequent unloading work and speeding up the unloading speed.

[0034] In order to improve the sealing and stability between the molds, the above-mentioned locking mechanism includes an extension cylinder 17, an extension plate 16 is fixedly connected to the side wall of the lower mold 3, the extension cylinder 17 is fixedly connected to the extension plate 16, and an extension rod 18 is slidably connected in the extension cylinder 17. A piston is provided at one end of the extension rod 18, and the piston is in contact with the inner wall of the extension cylinder 17. The other end of the extension rod 18 is fixedly connected to a limiting plate 19, and the limiting plate 19 cooperates with the limiting block 20.

[0035] When the hydraulic cylinder 7 drives the upper mold 4 to move toward the open end of the lower mold 3, the extension rod 18 in the extension tube 17 will automatically move toward the limit block 20. At this time, the limit plate 19 will extend into the limit hole of the limit block 20, and then the limit plate 19 will limit the limit block 20. A sealing groove 23 is provided on the open end face of the lower mold 3, and a sealing gasket 24 is provided on the open end face of the upper mold 4. The sealing gasket 24 cooperates with the sealing groove 23 to improve the stability and sealing effect of the upper mold 4 and the lower mold 3 when they are against each other.

[0036] In addition, in order to improve the practicality of the device, a mounting plate 10 is fixedly connected to the base 1, a booster cylinder 11 is fixedly connected to the mounting plate 10, a booster rod 12 is slidably connected to the booster cylinder 11, a sealing plug 13 is provided at one end of the booster rod 12, and the sealing plug 13 is in contact with the inner wall of the booster cylinder 11, and the sealing plug 13 separates the upper cavity and the lower cavity, the upper cavity is connected to the guide cylinder 21 through the first pipe 14, and the lower cavity is connected to the extension cylinder 17 through the second pipe 15.

[0037] The connecting plate 8 is fixedly connected to a pressing plate 9 , and the other end of the boosting rod 12 is fixedly connected to the pressing plate 9 .

[0038] When the hydraulic cylinder 7 drives the upper mold 4 to move toward the lower mold 3, the connecting plate 8 will drive the pressing plate 9 to move synchronously, and then the pressing plate 9 will drive the boosting rod 12 to descend, so that the sealing plug 13 moves down, compressing the gas in the lower cavity of the boosting cylinder 11, and then the lower cavity will transport the gas to the extension cylinder 17 through the second pipe 15. The extension cylinder 17 is pressurized, and the extension rod 18 will drive the limit plate 19 to move upward synchronously to limit the limit block 20 on the side wall of the upper mold 4.

[0039] At the same time, the gas in the upper cavity of the booster cylinder 11 generates negative pressure, so that the gas in the guide cylinder 21 is transported into the upper cavity through the first pipe 14, and then the guide rod 22 moves down from the through hole to the inside of the lower mold 3, preventing the protective tube from being affected after molding and cooling.

[0040] In order to improve the cooling efficiency of the mold, a diversion channel 5 is opened in the lower mold 3 and the upper mold 4. The diversion channel 5 is connected to the water cooler and is arranged in a curved shape on one side of the molding groove.

[0041] The basic operating principle of a water chiller is to utilize the high heat capacity of water to absorb and dissipate heat. The system typically consists of the following main components: A cooling water pump circulates water, transferring heat from the area requiring heat dissipation to the cooling device. A cooling device, typically a radiator or cooling tower, exchanges heat with air or another cooling medium, dissipating the absorbed heat. A temperature control system monitors water temperature and adjusts system operation to maintain the equipment within the optimal operating temperature range. This is existing technology.

[0042] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A silicon nitride ceramic protection tube blank forming die, comprising a base (1), characterized in that: Also includes: a support plate (2) fixedly connected to the base (1), The support plate (2) is fixedly connected to a lower mold (3), the base (1) is provided with an upper mold (4) which is lifted and lowered, and the open end faces of the lower mold (3) and the upper mold (4) are abutted against each other to form a forming groove, a through hole is provided on the bottom inner wall of the forming groove, and a discharge mechanism is provided on the base (1), and the output end of the discharge mechanism extends into the through hole; A limit block (20) fixedly connected to the side wall of the upper mold (4), A limiting hole is provided on the limiting block (20), and a locking mechanism is provided on the lower mold (3). When the lower mold (3) and the upper mold (4) are in contact with each other, the locking end of the locking mechanism fits into the inner wall of the limiting hole.

2. The silicon nitride ceramic protection tube blank forming die according to claim 1, characterized in that: A hydraulic cylinder (7) is fixedly connected to the base (1), a connecting plate (8) is fixedly connected to the side wall of the upper mold (4), and the connecting plate (8) is fixedly connected to the output end of the hydraulic cylinder (7).

3. The silicon nitride ceramic protection tube blank forming die according to claim 2, characterized in that: The discharging mechanism comprises a guide cylinder (21) fixedly connected to the base (1), a guide rod (22) slidably connected to the guide cylinder (21), a piston provided at one end of the guide rod (22), and the piston fits in contact with the inner wall of the guide cylinder (21), and the other end of the guide rod (22) extends into the molding groove of the lower mold (3), and the guide rod (22) fits in contact with the inner wall of the through hole.

4. The silicon nitride ceramic protection tube blank forming die according to claim 3, characterized in that: The locking mechanism includes an extension tube (17), an extension plate (16) is fixedly connected to the side wall of the lower mold (3), the extension tube (17) is fixedly connected to the extension plate (16), an extension rod (18) is slidably connected in the extension tube (17), a piston is provided at one end of the extension rod (18), and the piston is in contact with the inner wall of the extension tube (17), and the other end of the extension rod (18) is fixedly connected to a limit plate (19), and the limit plate (19) cooperates with the limit block (20).

5. The silicon nitride ceramic protection tube blank forming die according to claim 4, characterized in that: The base (1) is fixedly connected to a mounting plate (10), the mounting plate (10) is fixedly connected to a boost cylinder (11), the boost cylinder (11) is slidably connected to a boost rod (12), one end of the boost rod (12) is provided with a sealing plug (13), and the sealing plug (13) is in contact with the inner wall of the boost cylinder (11), and the sealing plug (13) is separated to form an upper cavity and a lower cavity, the upper cavity is connected to the guide cylinder (21) through a first pipe (14), and the lower cavity is connected to the extension cylinder (17) through a second pipe (15).

6. The silicon nitride ceramic protection tube blank forming die according to claim 5, characterized in that: A pressing plate (9) is fixedly connected to the connecting plate (8), and the other end of the boosting rod (12) is fixedly connected to the pressing plate (9).

7. The silicon nitride ceramic protection tube blank forming die according to claim 1, characterized in that: A diversion channel (5) is provided in both the lower mold (3) and the upper mold (4), and the diversion channel (5) is connected to a water cooler.

8. The silicon nitride ceramic protection tube blank forming die according to claim 7, characterized in that: The diversion channel (5) is arranged in a curved shape on one side of the forming groove.

9. The silicon nitride ceramic protection tube blank forming die according to claim 1, characterized in that: A feed port (6) is provided on the top of the upper mold (4), and the feed port (6) is communicated with the molding groove.

10. The silicon nitride ceramic protection tube blank forming die according to claim 1, characterized in that: A sealing groove (23) is provided on the open end surface of the lower mold (3), and a sealing gasket (24) is provided on the open end surface of the upper mold (4), and the sealing gasket (24) is matched with the sealing groove (23).

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