Seamless steel tube cold-drawing die

Abstract

The utility model relates to the field of seamless steel tube processing, and discloses a seamless steel tube cold-drawing die which comprises an upper die holder, a lower die holder is arranged at the bottom of the upper die holder, an upper die is arranged at the bottom of the upper die holder, a lower die is arranged at the top of the lower die holder, and limiting grooves are symmetrically formed in the top of the lower die holder. According to the seamless steel pipe cold-drawing die, in the process that the upper die base and the lower die base are connected, the limiting blocks enter the limiting grooves and are matched with the guide slopes to move the clamping blocks into the moving grooves to be compressed to the springs till the clamping blocks enter the clamping grooves, the clamping blocks are clamped in the clamping grooves, and therefore the seamless steel pipe cold-drawing die is formed. Then the side faces of the upper die base and the lower die base are aligned, the limiting clamping plate is moved into the limiting clamping frame through the connecting plate, the limiting groove is blocked to complete connection of the die bases, otherwise, the limiting clamping plate is moved out, the upper die base is directly moved rightwards and then upwards, disassembly can be achieved, and the problem that an existing cold-drawing die is difficult to assemble and disassemble conveniently and rapidly is solved.

Description

A seamless steel pipe cold drawing die Technical Field

[0001] This utility model relates to the field of seamless steel pipe processing technology, specifically to a cold drawing die for seamless steel pipes. Background Technology

[0002] Cold-drawn precision seamless steel tubes are precision cold-drawn seamless tubes used in mechanical structures and hydraulic equipment, requiring high dimensional accuracy and a smooth surface finish. Using precision seamless tubes in the manufacture of mechanical structures or hydraulic equipment can significantly save machining time, improve material utilization, and simultaneously enhance product quality.

[0003] Patent CN219378459U discloses a cold drawing die for seamless steel pipes, which includes a lower semi-circular tubular die and an upper semi-circular tubular die. A lower support seat and an upper support seat are fixedly sleeved on the outer sides of the lower semi-circular tubular die and the upper semi-circular tubular die, respectively. After the seamless steel pipe is placed between the lower semi-circular tubular die and the upper semi-circular tubular die, the operator rotates two rotating blocks at the same time until the lower semi-circular tubular die and the upper semi-circular tubular die are completely closed, thus completing the cold drawing of the seamless steel pipe. This method ensures the uniformity of the dimensions of the seamless steel pipe and improves the stability of the process.

[0004] However, the existing device only connects the upper and lower support seats by combining them and using structures such as connecting sleeve rods and threaded rods. This connection process requires continuous rotation of the rotating blocks on both sides, and the disassembly process also requires continuous rotation. If the two rotating blocks rotate at different degrees, it is easy to cause the threaded rod to twist and deform, making it difficult to guarantee the subsequent connection of the upper and lower support seats. To address this, a seamless steel pipe cold drawing die is proposed to solve the problem of the existing cold drawing die being difficult to install and disassemble conveniently. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a seamless steel pipe cold drawing die, which solves the aforementioned problems.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a seamless steel pipe cold drawing die, including an upper die base, a lower die base at the bottom of the upper die base, an upper die at the bottom of the upper die base, a lower die at the top of the lower die base, symmetrically provided limit grooves at the top of the lower die base, two limit blocks in the inner cavity of the limit grooves, a slot on one side of each limit block, two moving grooves in the inner wall of the limit grooves, a spring and a locking block in the inner cavity of each moving groove, a guide slope at one end of the top of each locking block, stabilizing mechanisms at both ends of the lower die base, a limit bracket fixedly connected to one side of both the upper and lower die bases, a limit plate slidably provided in the inner cavity of the limit bracket, the limit plate being connected by a connecting plate, and slots at both ends of the upper die base.

[0009] Preferably, when the limiting block is completely located in the inner cavity of the limiting groove, the bottom of the locking block is flush with the bottom of the inner cavity of the locking groove.

[0010] Preferably, the two ends of the spring are fixedly connected to the moving groove and the locking block respectively, and the spring is in a compressed state when one end of the locking block is in contact with the limiting groove.

[0011] Preferably, the stabilizing mechanism includes lifting grooves at both ends of the lower mold base, a lifting plate is slidably disposed in the inner cavity of the lifting groove, and a control groove is provided at one end of the lifting plate.

[0012] Preferably, the top of the lifting plate is symmetrically and fixedly connected with an insert plate, the bottom of the card block is provided with a slot, the insert plate passes through the inner cavity of the moving groove and extends into the inner cavity of the slot, and the top cavity wall of the lifting groove and the top of the lifting plate are both fixedly connected with magnetic suction plates.

[0013] Preferably, the bottom of the limiting groove is provided with a groove, and the inner cavity of the groove is rotatably connected to a roller.

[0014] (III) Beneficial Effects

[0015] 1. In the process of connecting the upper and lower mold bases of this seamless steel pipe cold drawing die, the limiting block enters the limiting groove and, with the help of the guide slope, moves the locking block into the moving groove and compresses it to the spring until the locking block enters the locking groove. Then, the sides of the upper and lower mold bases are aligned, and the limiting locking plate is moved into the limiting locking bracket through the connecting plate to seal the limiting groove and complete the connection of the mold bases. Conversely, by moving the limiting locking plate out, the upper mold base can be moved directly to the right and then upward to achieve disassembly, which solves the problem of the existing cold drawing dies being difficult to install and disassemble conveniently.

[0016] 2. In this seamless steel pipe cold drawing die, after the clamping block enters the clamping slot and initially limits the upper die seat to the top of the lower die seat, the lifting plate in the lifting slot is moved up through the control slot, thereby driving the insert plate to move into the slot in the clamping block. In conjunction with the magnetic suction plate, the lifting plate is limited to ensure the clamping block is firmly in the slot, thereby improving the stability of the clamping block, that is, improving the stability of the seamless steel pipe cold drawing die. Attached Figure Description

[0017] Figure 1 is a structural diagram of this utility model;

[0018] Figure 2 is a bottom view of the upper mold base of this utility model;

[0019] Figure 3 is a cross-sectional view of the structure of this utility model;

[0020] Figure 4 is a structural diagram of this utility model.

[0021] In the diagram: 1. Upper mold base; 2. Lower mold base; 3. Upper mold; 4. Lower mold; 5. Limiting groove; 6. Limiting block; 7. Slot; 8. Moving groove; 9. Spring; 10. Locking block; 11. Guide slope; 12. Stabilizing mechanism; 121. Lifting groove; 122. Lifting plate; 123. Control groove; 124. Insert plate; 125. Slot; 126. Magnetic suction plate; 13. Limiting bracket; 14. Limiting plate; 15. Connecting plate; 16. Groove; 17. Roller; 18. Slot opening. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example: Please refer to Figures 1-4. A seamless steel pipe cold drawing die includes an upper die base 1, a lower die base 2 at the bottom of the upper die base 1, an upper die 3 at the bottom of the upper die base 1, a lower die 4 at the top of the lower die base 2, symmetrical limit grooves 5 at the top of the lower die base 2, two limit blocks 6 in the inner cavity of the limit groove 5, a slot 7 on one side of the limit block 6, two moving grooves 8 in the inner wall of the limit groove 5, a spring 9 and a locking block 10 in the inner cavity of the moving groove 8, a guide slope 11 at one end of the top of the locking block 10, stabilizing mechanisms 12 at both ends of the lower die base 2, a limit bracket 13 fixedly connected to one side of both the upper die base 1 and the lower die base 2, a limit plate 14 slidably provided in the inner cavity of the limit bracket 13, the limit plate 14 being connected by a connecting plate 15, and slots 18 at both ends of the upper die base 1.

[0024] Furthermore, when the limiting block 6 is completely located in the inner cavity of the limiting groove 5, the bottom of the locking block 10 is flush with the bottom of the inner cavity of the locking groove 7.

[0025] Furthermore, the two ends of the spring 9 are fixedly connected to the moving groove 8 and the locking block 10 respectively. When one end of the locking block 10 is in contact with the limiting groove 5, the spring 9 is in a compressed state.

[0026] Furthermore, the stabilizing mechanism 12 includes lifting grooves 121 opened at both ends of the lower mold base 2, and a lifting plate 122 is slidably arranged in the inner cavity of the lifting groove 121. A control groove 123 is opened at one end of the lifting plate 122.

[0027] Furthermore, the top of the lifting plate 122 is symmetrically and fixedly connected with an insert plate 124, and the bottom of the locking block 10 is provided with a slot 125. The insert plate 124 passes through the inner cavity of the moving groove 8 and extends into the inner cavity of the slot 125. The top cavity wall of the lifting groove 121 and the top of the lifting plate 122 are both fixedly connected with magnetic suction plates 126. When the locking block 10 enters the locking groove 7 and initially limits the upper mold base 1 to the top of the lower mold base 2, the lifting plate 122 in the lifting groove 121 is moved upward by the control groove 123, thereby driving the insert plate 124 to move into the slot 125 in the locking block 10. With the help of the magnetic suction plate 126, the lifting plate 122 is limited, ensuring the stability of the locking block 10 in the slot 125, thereby improving the stability of the locking block 10, that is, improving the stability of the seamless steel pipe cold drawing die.

[0028] Furthermore, a groove 16 is provided at the bottom of the limiting groove 5. A roller 17 is rotatably connected to the inner cavity of the groove 16. When it is necessary to remove the upper mold base 1 from the lower mold base 2, there is no need for an additional structure to move the locking block 10 out of the slot 7. Simply remove the limiting plate 14 and open the right side of the limiting groove 5. The upper mold base 1 can then be moved to the right, so that the locking block 10 is separated from the slot 7 on the limiting block 6. The upper mold base 1 can then be moved up and removed. During the movement of the upper mold base 1, the roller 17 in the groove 16 is used to improve the ease of movement of the upper mold base 1, making it easier to disassemble this seamless steel pipe cold drawing mold.

[0029] Working principle: When using this seamless steel pipe cold drawing die, the upper die base 1 is placed on top of the lower die base 2 through the slot 18, so that the upper die 3 and the lower die 4 are merged. During the process, the limiting block 6 enters the limiting groove 5, and with the help of the guide slope 11, the locking block 10 is moved into the moving groove 8 and compressed to the spring 9 until the locking block 10 enters the locking groove 7. Then, the upper die base 1 and the lower die base 2 are aligned side by side. The limiting plate 14 is moved into the limiting bracket 13 through the connecting plate 15 to seal the limiting groove 5 and complete the connection of the die base. Conversely, the limiting plate 14 is moved out, and the upper die base 1 is moved directly to the right and then moved upward to achieve disassembly. This solves the problem of the existing cold drawing die being difficult to install and disassemble conveniently. After the upper die base 1 and the lower die base 2 are stably connected, the seamless steel pipe to be cold drawn is inserted from the right side and pulled out from the left side to achieve the cold drawing of the seamless steel pipe.

[0030] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] 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 cold drawing die for seamless steel pipes, comprising an upper die base (1), characterized in that: The bottom of the upper mold base (1) is provided with a lower mold base (2), the bottom of the upper mold base (1) is provided with an upper mold (3), the top of the lower mold base (2) is provided with a lower mold (4), the top of the lower mold base (2) is symmetrically provided with limiting grooves (5), the inner cavity of the limiting groove (5) is provided with two limiting blocks (6), one side of the limiting block (6) is provided with a slot (7), the inner wall of the limiting groove (5) is provided with two moving grooves (8), the inner cavity of the moving groove (8) is provided with There is a spring (9) and a locking block (10). The top edge of the locking block (10) is provided with a guide slope (11). The two ends of the lower mold base (2) are provided with stabilizing mechanisms (12). The upper mold base (1) and the lower mold base (2) are fixedly connected to a limiting bracket (13). The inner cavity of the limiting bracket (13) is slidably provided with a limiting plate (14). The limiting plate (14) is connected by a connecting plate (15). The two ends of the upper mold base (1) are provided with slots (18).

2. The seamless steel pipe cold drawing die according to claim 1, characterized in that: When the limiting block (6) is completely located in the inner cavity of the limiting groove (5), the bottom of the locking block (10) is flush with the bottom of the inner cavity of the locking groove (7).

3. The seamless steel pipe cold drawing die according to claim 1, characterized in that: The two ends of the spring (9) are fixedly connected to the moving groove (8) and the locking block (10) respectively. When one end of the locking block (10) is in contact with the limiting groove (5), the spring (9) is in a compressed state.

4. The seamless steel pipe cold drawing die according to claim 1, characterized in that: The stabilizing mechanism (12) includes lifting grooves (121) opened at both ends of the lower mold base (2), and a lifting plate (122) is slidably arranged in the inner cavity of the lifting groove (121), and a control groove (123) is opened at one end of the lifting plate (122).

5. A seamless steel pipe cold drawing die according to claim 4, characterized in that: The top of the lifting plate (122) is symmetrically and fixedly connected with a plug plate (124). The bottom of the card block (10) is provided with a slot (125). The plug plate (124) passes through the inner cavity of the moving groove (8) and extends into the inner cavity of the slot (125). The top cavity wall of the lifting groove (121) and the top of the lifting plate (122) are both fixedly connected with magnetic suction plates (126).

6. The seamless steel pipe cold drawing die according to claim 1, characterized in that: The bottom of the limiting groove (5) is provided with a groove (16), and the inner cavity of the groove (16) is rotatably connected to a roller (17).

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