A forming device for molybdenum top head

Abstract

The utility model is suitable for molybdenum alloy top head forming technical field provides a kind of for the forming device of molybdenum top head, including conical shell, the conical shell is inlaid with the conical forming die extending into its inside, vertical forming die is provided on the conical shell, threaded ring is provided on the conical shell, the outer surface of the conical shell in conical shell is equipped with the cooling copper pipe of spiral setting, the upper surface of threaded ring is provided with butt joint groove, the upper end of cooling copper pipe is penetrated into butt joint groove, the inside of vertical forming die is hollow, the inner wall of vertical forming die close to center is also equipped with the cooling copper pipe of spiral setting, the device is equipped with the cooling copper pipe of spiral setting, so cooling water flows in cooling copper pipe, can increase the cooling area of vertical forming die and conical forming die, the problem of uneven cooling of molybdenum top head is avoided as far as possible, to guarantee the cooling effect of molybdenum top head.

Description

Technical Field

[0001] This utility model relates to the field of molybdenum alloy mandrel forming technology, and more specifically, to a forming device for molybdenum mandrels. Background Technology

[0002] Molybdenum alloy mandrels are tools used for threading seamless steel pipes such as stainless steel pipes and alloy steel pipes. They are generally formed by pressing using powder metallurgy.

[0003] A search revealed a relevant patent, CN219025927U. This prior art involves setting a cooling water chamber inside a vertical forming mold and a connecting water chamber inside a conical forming mold. A temperature sensor detects temperature changes, and when the temperature exceeds a predetermined value, it transmits an electrical signal to an external water supply device and a water circulation device. Water enters the cooling water chamber from the inlet pipe, flows into the connecting water chamber, and finally exits from the outlet pipe, thereby carrying away heat and cooling the vertical and conical forming molds. This eliminates the need to stop the machine for cooling and allows for simultaneous forming and cooling.

[0004] However, the inventors believe that the prior art has the following problems when in use: Although the prior art has a cooling water cavity inside the vertical forming mold and a connecting water cavity inside the conical forming mold, the water inlet pipe is located on one side of the cooling water cavity. When the cooling water enters the cooling water cavity through the water inlet pipe, it flows vertically through the cooling water cavity into the connecting water cavity under the action of inertia. However, the connecting water cavity and the cooling water cavity are annular, which results in a small cooling area of ​​the connecting water cavity and the cooling water cavity, resulting in uneven cooling of the molybdenum mandrel and affecting the cooling effect of the molybdenum mandrel. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a forming device for molybdenum mandrels.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A forming device for a molybdenum mandrel includes a conical shell, a conical forming mold extending into the conical shell, a vertical forming mold on the conical shell, a threaded ring on the conical shell, a spirally arranged cooling copper tube fitted on the outer surface of the conical forming mold located inside the conical shell, a mating groove on the upper surface of the threaded ring, the upper end of the cooling copper tube penetrating into the mating groove, a hollow interior of the vertical forming mold, a spirally arranged cooling copper tube also fitted on the inner wall of the vertical forming mold near the center, a mating ring corresponding to the mating groove on the lower surface of the vertical forming mold, the lower end of the cooling copper tube in the vertical forming mold penetrating through the lower surface of the mating ring, connecting pipes on the outer surfaces of both the conical shell and the vertical forming mold, one end of the connecting pipe on the conical shell penetrating into the conical shell and communicating with the bottom of the cooling copper tube inside it, and one end of the connecting pipe on the vertical forming mold penetrating into the vertical forming mold and communicating with the upper end of the cooling copper tube inside it.

[0008] The present invention is further configured such that: a rotating shaft is rotatably connected between the inner walls of the two opposite sides of the connecting pipe, and a sealing plate for sealing the inner wall of the connecting pipe is sleeved on the outer surface of the rotating shaft.

[0009] The present invention is further configured such that: a flange for installation is fitted on the other end of the connecting pipe, an outer housing is provided on the outer surface of the connecting pipe, one end of the rotating shaft rotates through into the outer housing, a gear is fitted on the outer surface of the end of the rotating shaft located in the outer housing, and a rack is meshed with the lower side of the gear.

[0010] The present invention is further configured such that: a control slide rod is provided on the side surface of the rack facing the flange; the other end of the control slide rod slides through the outer surface of the outer housing and finally slides through the flange; a push plate is provided at the end of the control slide rod that passes through the flange; a receiving groove adapted to the push plate is provided on the side surface of the flange facing the push plate; and the control slide rod is located at the center of the receiving groove; a spring is provided between the push plate and the inner wall of the receiving groove, which is movably sleeved on the outer surface of the control slide rod.

[0011] The present invention is further configured such that: the inner ring of the threaded ring is at the same vertical position as the inner wall of the conical forming mold; a threaded groove adapted to the threaded ring is opened on the lower side of the vertical forming mold; a sealing rubber ring is fitted on the outer surface of the mating ring; the bottom wall of the mating groove is inclined; and one end of the cooling copper pipe that penetrates into the mating groove is located at the bottom of the inclined surface of the mating groove.

[0012] The advantages of this utility model are:

[0013] Firstly, by setting up a spiral cooling copper pipe, the cooling water can increase the cooling area of ​​the vertical forming mold and the conical forming mold when flowing through the cooling copper pipe, thus avoiding the problem of uneven cooling of the molybdenum mandrel and ensuring the cooling effect of the molybdenum mandrel.

[0014] Secondly, when not in use, this utility model can seal the connecting pipe to minimize the entry of dust from the external environment into the connecting pipe, thus preventing contamination of the cooling copper pipe and ensuring its long-term performance. When in use, the connecting pipe can be automatically opened after the cooling water pipe is installed, without the need for manual operation, reducing the workload of the staff. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a forming device for a molybdenum mandrel according to the present invention;

[0016] Figure 2 This is a front view plan of the internal structure of the conical shell of this utility model;

[0017] Figure 3 This is a cross-sectional view of the connecting pipe of this utility model;

[0018] Figure 4 This is a cross-sectional view of the external casing of this utility model.

[0019] In the diagram: 1. Conical shell; 2. Vertical forming mold; 3. Threaded ring; 4. Connecting pipe; 5. Butt groove; 6. Butt ring; 7. Cooling copper pipe; 8. Conical forming mold; 9. Flange; 10. Shaft; 11. Sealing plate; 12. External shell; 13. Gear; 14. Rack; 15. Control slide bar; 16. Storage groove; 17. Push plate; 18. Spring. Detailed Implementation

[0020] Please see Figures 1-4 The present invention provides the following technical solution:

[0021] Specifically, it refers to a forming device for a molybdenum mandrel, including a conical shell 1, a conical forming mold 8 extending into the conical shell 1, a vertical forming mold 2 on the conical shell 1, and a threaded ring 3 on the conical shell 1. The inner ring of the threaded ring 3 is at the same vertical position as the inner wall of the conical forming mold 8. The lower side of the vertical forming mold 2 has a threaded groove that matches the threaded ring 3. Therefore, the vertical forming mold 2 is screwed onto the threaded ring 3 through the threaded groove, thereby completing the installation on the conical shell 1.

[0022] A conical forming mold 8 is fitted with a spirally arranged cooling copper pipe 7 on the outer surface inside the conical shell 1. A mating groove 5 is formed on the upper surface of the threaded ring 3, and the upper end of the cooling copper pipe 7 passes through the mating groove 5. The interior of the vertical forming mold 2 is hollow, and a spirally arranged cooling copper pipe 7 is also fitted on the inner wall of the vertical forming mold 2 near the center. A mating ring 6 corresponding to the mating groove 5 is provided on the lower surface of the vertical forming mold 2. Thus, when the vertical forming mold 2 is installed on the conical shell 1, the mating ring 6 extends into the mating groove 5, and the lower end of the cooling copper pipe 7 in the vertical forming mold 2 passes through the lower surface of the mating ring 6. Therefore, the cooling water in the vertical forming mold 2 can flow into the mating groove 5. Connecting pipes 4 are provided on the outer surfaces of both the conical shell 1 and the vertical forming mold 2. One end of the connecting pipe 4 on the conical shell 1 passes through the conical shell 1 and connects with the bottom of the cooling copper pipe 7 inside. The vertical forming mold 2 has a connecting pipe 4 at one end that extends into the vertical forming mold 2 and connects to the upper end of the cooling copper pipe inside it. In use, the cooling water supply pipe and the output pipe can be connected to the two connecting pipes 4 respectively, so that the cooling water can flow into the cooling copper pipe 7 inside the vertical forming mold 2 through the connecting pipe 4, cooling the vertical part of the molybdenum mandrel on the vertical forming mold 2. After the cooling water flows to the bottom of the cooling copper pipe 7, it falls into the docking groove 5 and flows into the cooling copper pipe 7 inside the conical shell 1, thereby completing the cooling of the conical forming mold 8. Finally, it flows out through the bottom connecting pipe 4. Since the two cooling copper pipes 7 are spirally arranged, the cooling water can increase the cooling area of ​​the vertical forming mold 2 and the conical forming mold 8 when flowing through the cooling copper pipes 7, thus avoiding the problem of uneven cooling of the molybdenum mandrel and ensuring the cooling effect of the molybdenum mandrel.

[0023] In this design, the height of the docking ring 6 is less than the depth of the docking groove 5. Therefore, when the docking ring 6 is installed into the docking groove 5, there is a certain gap between the bottom of the docking ring 6 and the bottom wall of the docking groove 5. This avoids the situation where the docking ring 6 fits too tightly, preventing the cooling water from flowing into the docking groove 5.

[0024] In this design, the bottom wall of the docking groove 5 is inclined, and the end of the cooling copper pipe 7 that penetrates into the docking groove 5 is located at the bottom of the inclined surface of the docking groove 5. Therefore, when the cooling water flows into the docking groove 5, it can slide down along the inclined surface of the docking groove 5 into the cooling copper pipe 7 in the conical shell 1, thus avoiding the problem of some cooling water remaining in the docking groove 5 as much as possible.

[0025] A sealing rubber ring is fitted on the outer surface of the docking ring 6, which increases the sealing between the docking ring 6 and the docking groove 5, and minimizes the leakage of cooling water flowing into the docking groove 5, thereby further ensuring the cooling effect of the molybdenum mandrel forming device.

[0026] The other end of the connecting pipe 4 is fitted with a flange 9 for installation, so that the connecting pipe 4 is connected to the flange 9 on the connecting pipe 4 through the flange joint on the cooling water pipe and fixed with bolts to complete the installation and connection with the cooling water pipe.

[0027] A rotating shaft 10 is rotatably connected between the inner walls of opposite sides of the connecting pipe 4. A sealing plate 11 is fitted on the outer surface of the rotating shaft 10 to seal the inner wall of the connecting pipe 4. When the sealing plate 11 is vertical, it seals the connecting pipe 4. Therefore, when the forming device is not in use, dust from the external environment will not enter the connecting pipe 4 and cause contamination to the cooling copper pipe 7, thus ensuring the long-term performance of the cooling copper pipe 7.

[0028] An outer housing 12 is provided on the outer surface of the connecting pipe 4. One end of the rotating shaft 10 rotates and penetrates into the outer housing 12. A gear 13 is sleeved on the outer surface of the end of the rotating shaft 10 located inside the outer housing 12. A rack 14 is meshed on the lower side of the gear 13. A control slide rod 15 is provided on the side surface of the rack 14 facing the flange 9. The other end of the control slide rod 15 slides through the outer surface of the outer housing 12 and finally slides through the flange 9. A push plate 17 is provided on the end of the control slide rod 15 that extends through the flange 9. A receiving groove 16 adapted to the push plate 17 is provided on the side surface of the flange 9 facing the push plate 17, and the control slide rod 15 is located at the center of the receiving groove 16. A spring 18 is provided between the push plate 17 and the inner wall of the receiving groove 16, and is movably sleeved on the outer surface of the control slide rod 15. When the spring 18 is not compressed, the spring 18 will generate a pushing force on the push plate 17, causing the push plate 17 to move. The initial position of the push plate 17 is away from the receiving groove 16, while the gear 13 is close to the flange 9. At the same time, the sealing plate 11 is in a sealing state against the connecting pipe 4. When the cooling water pipe is installed on the connecting pipe 4, the flange joint on the cooling water pipe will squeeze the push plate 17, causing the push plate 17 to move towards the receiving groove 16. At the same time, the spring 18 is stressed and contracts. At this time, the control slide rod 15 pushes the rack 14 to move within the outer housing 12. Simultaneously, the rack 14 meshes with the gear 13 to rotate, and the rotating shaft 10 synchronously drives the sealing plate 11 to rotate. When the push plate 17 moves into the receiving groove 16, the rack 14 moves to its maximum stroke, and the sealing plate 11 rotates to a horizontal position, no longer sealing the connecting pipe 4. In this way, cooling water can be transported through the connecting pipe 4. With the above structure, the connecting pipe 4 can be automatically opened after the cooling water pipe is installed without manual operation, reducing the workload of the staff.

[0029] The working principle of the forming device for molybdenum mandrel provided by this utility model is as follows: the cooling water supply pipe and the output pipe can be connected to two connecting pipes 4 respectively, so that the cooling water can flow into the cooling copper pipe 7 inside the vertical forming mold 2 through the connecting pipe 4, thereby cooling the vertical part of the molybdenum mandrel on the vertical forming mold 2. After the cooling water flows to the bottom of the cooling copper pipe 7, it falls into the docking groove 5 and flows into the cooling copper pipe 7 inside the conical shell 1, thereby completing the cooling of the conical forming mold 8, and finally flows out through the bottom connecting pipe 4.

Claims

1. A forming apparatus for a molybdenum mandrel, comprising a conical shell (1), characterized in that: The conical shell (1) is inlaid with a conical forming mold (8) extending into its interior. A vertical forming mold (2) is provided on the conical shell (1). A threaded ring (3) is provided on the conical shell (1). A spirally arranged cooling copper tube (7) is fitted on the outer surface of the conical forming mold (8) located inside the conical shell (1). A mating groove (5) is opened on the upper surface of the threaded ring (3). The upper end of the cooling copper tube (7) penetrates into the mating groove (5). The interior of the vertical forming mold (2) is hollow. A spirally arranged cooling copper tube is also fitted on the inner wall of the vertical forming mold (2) near the center. (7) A docking ring (6) corresponding to the docking groove (5) is provided on the lower surface of the vertical forming mold (2). The lower end of the cooling copper pipe (7) in the vertical forming mold (2) passes through the lower surface of the docking ring (6). A connecting pipe (4) is provided on the outer surface of both the conical shell (1) and the vertical forming mold (2). One end of the connecting pipe (4) on the conical shell (1) passes through the conical shell (1) and is connected to the bottom of the cooling copper pipe (7) inside it. One end of the connecting pipe (4) on the vertical forming mold (2) passes through the vertical forming mold (2) and is connected to the upper end of the cooling copper pipe inside it.

2. The forming apparatus for a molybdenum mandrel according to claim 1, characterized in that: A rotating shaft (10) is rotatably connected between the inner walls of the two opposite sides of the connecting pipe (4), and a sealing plate (11) is sleeved on the outer surface of the rotating shaft (10) to seal the inner wall of the connecting pipe (4).

3. The forming apparatus for a molybdenum mandrel according to claim 2, characterized in that: The other end of the connecting pipe (4) is fitted with a flange (9) for installation. The outer surface of the connecting pipe (4) is provided with an outer housing (12). One end of the rotating shaft (10) rotates through into the outer housing (12). The outer surface of the end of the rotating shaft (10) located inside the outer housing (12) is fitted with a gear (13). The lower side of the gear (13) is meshed with a rack (14).

4. The forming apparatus for a molybdenum mandrel according to claim 3, characterized in that: A control slide rod (15) is provided on the side surface of the rack (14) facing the flange (9). The other end of the control slide rod (15) slides through the outer surface of the outer housing (12) and finally slides through the flange (9). A push plate (17) is provided on the end of the control slide rod (15) that passes through the flange (9). A storage groove (16) adapted to the push plate (17) is provided on the side surface of the flange (9) facing the push plate (17). The control slide rod (15) is located at the center of the storage groove (16). A spring (18) is movably sleeved on the outer surface of the control slide rod (15) between the push plate (17) and the inner wall of the storage groove (16).

5. A forming apparatus for a molybdenum mandrel according to claim 1, characterized in that: The inner ring of the threaded ring (3) is at the same vertical position as the inner wall of the conical forming mold (8), and the lower side of the vertical forming mold (2) is provided with a threaded groove that is compatible with the threaded ring (3).

6. The forming apparatus for a molybdenum mandrel according to claim 1, characterized in that: A sealing rubber ring is fitted on the outer surface of the docking ring (6).

7. A forming apparatus for a molybdenum mandrel according to claim 1, characterized in that: The bottom wall of the docking groove (5) is inclined, and one end of the cooling copper pipe (7) that penetrates into the docking groove (5) is located at the bottom of the inclined surface of the docking groove (5).

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