Multi-material adaptive pipe blank piercing plug device

Abstract

The utility model relates to the technical field of piercing plugs, in particular to a multi-material adaptive pipe blank piercing plug device which comprises a hard head, four mounting holes are formed in the surface of the hard head, a wear-resistant layer is arranged at the lower end of the hard head, four first threaded holes are formed in the left end of the wear-resistant layer, and a second threaded hole is formed in the right end of the wear-resistant layer. The second threaded hole in the right end of the mounting hole in the device is matched with the connecting rod, and the limiting hole in the inner wall of the rear tail, the movable groove in the surface of the connecting rod, the limiting ball and other structures are combined, so that an adjustable connecting mode is formed. The position of the connecting rod can be flexibly adjusted by pressing the limiting switch to enable the strip-shaped block to rotate and drive the limiting ball to be separated from the limiting hole, then the working state of the ejector head is changed, the adjustable limiting structure can accurately control the perforating position and depth of the ejector head according to the machining requirements of different pipe blanks, the machining precision is effectively improved, and the machining efficiency is improved. And the adaptability of the device to different processing scenes is enhanced, so that the production process is more flexible and efficient.

Description

Technical Field

[0001] This utility model relates to the field of perforation mandrel technology, specifically a perforation mandrel device for multi-material adaptable tube blanks. Background Technology

[0002] In the pipe processing industry, billet piercing is a key process in the production of seamless steel pipes and other pipe products. The piercing mandrel, as the core component of this process, plays a decisive role in the quality of the pipe and production efficiency. Traditional billet piercing mandrel devices are often made of a single material. However, in actual processing, there are many types of billet materials, and billets of different materials have significant differences in physical properties such as hardness and toughness.

[0003] When using a single-material mandrel to process multi-material tube blanks, the following problems often arise: When processing tube blanks with high hardness, the mandrel wears out too quickly, shortening its service life. Frequent mandrel replacements not only increase production costs but also reduce production efficiency. Conversely, when processing tube blanks with high toughness, the mandrel's insufficient strength and wear resistance may lead to decreased piercing accuracy, affecting the dimensional accuracy and surface quality of the tube. Furthermore, the structural design of traditional mandrel devices is not conducive to flexible adjustments according to different processing needs, making it difficult to meet diverse production requirements. Therefore, we propose a multi-material adaptable tube blank piercing mandrel device to solve the aforementioned problems. Utility Model Content

[0004] The purpose of this invention is to provide a multi-material compatible tube blank piercing mandrel device to solve the problems mentioned in the background art.

[0005] The technical solution of this utility model is: a multi-material adaptable tube blank piercing head device, including a hardened head, the surface of which is provided with four mounting holes, the lower end of which is provided with a wear-resistant layer, and the left end of which is provided with four first threaded holes, each of which is threaded with a screw.

[0006] Preferably, the mounting hole matches the first threaded hole, and the hardened head and the wear-resistant layer are mounted together by screws.

[0007] Preferably, a second threaded hole is provided at the right end of the mounting hole, and a connecting rod is threaded into the second threaded hole. A tail is fixedly connected to the lower end of the mounting hole. Multiple limiting holes are provided on the inner wall of the tail. Two symmetrically arranged movable grooves are provided on the surface of the connecting rod. Limiting balls are movably connected in the two movable grooves. A square groove is provided on the inner wall of the connecting rod. A strip block is rotatably connected to the inner wall of the square groove. A spring is fixedly connected to the lower left surface of the strip block. The spring is fixedly connected to the inner wall of the square groove. A limit switch is fixedly connected to the upper surface of the strip block. The limit switch is located on the surface of the tail.

[0008] Preferably, the multiple limiting holes are spaced equally between each other, and the limiting holes are matched with the limiting balls.

[0009] Preferably, the two strip blocks are fixedly connected to the upper left surface with protrusions, and the two protrusions are abutted against the limiting ball.

[0010] Preferably, the hardened head is made of cemented carbide, and the mounting hole and wear-resistant layer are made of cobalt-based high-temperature alloy.

[0011] This utility model provides an improved multi-material adaptable tube blank piercing mandrel device, which has the following improvements and advantages compared with the prior art:

[0012] Firstly, this invention combines a hardened mandrel made of cemented carbide with a wear-resistant layer made of cobalt-based superalloy. The high hardness and rigidity of cemented carbide allow for efficient penetration of tube blanks of various hardnesses, while the wear-resistant layer, made of cobalt-based superalloy, effectively extends the service life of the mandrel during processing due to its excellent wear resistance. The hardened mandrel and wear-resistant layer are connected by screws, achieving a complementary advantage of the two materials and facilitating individual replacement of the wear-resistant layer after wear, thus reducing overall maintenance costs. Simultaneously, it meets the diverse needs of piercing tube blanks made of various materials.

[0013] Secondly, this utility model utilizes a second threaded hole at the right end of the mounting hole in the device to engage with the connecting rod. Combined with the limiting hole on the inner wall of the tail, the movable groove on the surface of the connecting rod, and the limiting ball, an adjustable connection is formed. By pressing the limiting switch, the strip block rotates, causing the limiting ball to disengage from the limiting hole, allowing for flexible adjustment of the connecting rod's position and thus changing the working state of the mandrel. This adjustable limiting structure can precisely control the perforation position and depth of the mandrel according to the processing requirements of different tube blanks, effectively improving processing accuracy and enhancing the device's adaptability to different processing scenarios, making the production process more flexible and efficient. Attached Figure Description

[0014] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0015] Figure 1 This is a frontal three-dimensional structural schematic diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of this utility model in cross-section;

[0017] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle.

[0018] Explanation of reference numerals in the attached figures:

[0019] 1. Hardened head; 2. Mounting hole; 3. Wear-resistant layer; 4. First threaded hole; 5. Screw; 6. Second threaded hole; 7. Connecting rod; 8. Rear tail; 9. Limiting hole; 10. Movable groove; 11. Limiting ball; 12. Square groove; 13. Strip block; 14. Spring; 15. Limit switch. Detailed Implementation

[0020] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0021] This utility model provides an improved multi-material compatible tube blank piercing mandrel device. The technical solution of this utility model is as follows:

[0022] like Figure 1 - Figure 3 As shown, a multi-material adaptable tube blank piercing head device includes a hardened head 1, four mounting holes 2 are provided on the surface of the hardened head 1, a wear-resistant layer 3 is provided at the lower end of the hardened head 1, and four first threaded holes 4 are provided at the left end of the wear-resistant layer 3, and screws 5 are threaded into each of the four first threaded holes 4.

[0023] Furthermore, the mounting hole 2 matches the first threaded hole 4, and the hardened head 1 and the wear-resistant layer 3 are installed together by screws 5. The detachable connection between the hardened head 1 and the wear-resistant layer 3 makes it easy to replace the wear-resistant layer 3 with specific properties according to different tube blank materials, which greatly improves the adaptability and economy of the device.

[0024] Furthermore, a second threaded hole 6 is provided at the right end of the mounting hole 2, and a connecting rod 7 is internally threaded into the second threaded hole 6. A tail 8 is fixedly connected to the lower end of the mounting hole 2. Multiple limiting holes 9 are provided on the inner wall of the tail 8. Two symmetrically arranged movable grooves 10 are provided on the surface of the connecting rod 7. Limiting balls 11 are movably connected in the two movable grooves 10. A square groove 12 is provided on the inner wall of the connecting rod 7. A strip block 13 is rotatably connected to the inner wall of the square groove 12. A spring 14 is fixedly connected to the lower left surface of the strip block 13. The spring 14 is fixedly connected to the inner wall of the square groove 12. A limit switch 15 is fixedly connected to the upper surface of the strip block 13. The limit switch 15 is located on the surface of the tail 8. Through the cooperation of the limiting ball 11 and the limiting hole 9, the connecting rod 7 can be accurately locked in multiple positions. The linkage mechanism of the spring 14 and the strip block 13 ensures the reliable locking and release of the limiting ball 11. The operation is simple and the stability is high, which significantly improves the processing flexibility and applicability of the device.

[0025] Furthermore, the multiple limiting holes 9 are spaced equally in pairs, and the limiting holes 9 match the limiting balls 11. The design of the equally spaced limiting holes 9 makes the adjustment amount of the connecting rod 7 regular, which makes it easy for the operator to quickly locate the required perforation depth position, and improves the adjustment efficiency and the consistency of processing accuracy.

[0026] Furthermore, protrusions are fixedly connected to the upper left surface of the two strip blocks 13. The two protrusions are set to abut against the limit ball 11. The setting of the protrusions enhances the control capability of the strip block 13 over the limit ball 11, ensuring that the limit ball 11 can completely disengage from or lock into the limit hole 9 when the limit switch 15 is operated, avoiding the safety hazards caused by the semi-locked state.

[0027] Furthermore, the hardened head 1 is made of cemented carbide, while the mounting hole 2 and the wear-resistant layer 3 are made of cobalt-based high-temperature alloy. The hardened head 1, made of cemented carbide, provides excellent hardness and resistance to deformation, and can effectively penetrate high-strength tube blank materials. The wear-resistant layer 3, made of cobalt-based high-temperature alloy, maintains good wear resistance and corrosion resistance under high temperature and high pressure environments. The combination of the two significantly improves the overall performance and service life of the device.

[0028] Working Principle: The device uses a hardened head 1 made of cemented carbide as the main piercing component. Its high hardness effectively meets the piercing requirements of tube blanks of different materials. Four mounting holes 2 on the surface of the hardened head 1 are connected to a wear-resistant layer 3 made of cobalt-based high-temperature alloy via screws 5. The high-temperature resistance and wear resistance of the wear-resistant layer 3 significantly improve the device's wear resistance during piercing, extending its service life. The operator can press the limit switch 15 to rotate the strip block 13 around the inner wall of the square groove 12, compressing the spring 14 and causing the protrusion to disengage from the limit ball 11. At this time, the limit ball 11 can exit from the limit hole 9 on the inner wall of the tail 8, allowing the connecting rod 7 to rotate or move axially within the second threaded hole 6. After adjusting to the appropriate position, the limit switch 15 is released, the spring 14 rebounds, pushing the strip block 13 back to its original position, and the protrusion presses against the limit ball 11 again, causing it to engage with the corresponding limit hole 9, thus fixing the connecting rod 7.

[0029] The foregoing description enables those skilled in the art to implement or use this invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this invention. Therefore, this invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A piercing plug device for multi-material adapter tube blanks comprising a hard head (1), characterized in that: The surface of the hardened head (1) is provided with four mounting holes (2), and the lower end of the hardened head (1) is provided with a wear-resistant layer (3). The left end of the wear-resistant layer (3) is provided with four first threaded holes (4), and screws (5) are threaded into each of the four first threaded holes (4).

2. A multi-material adapter tube blank piercing plug apparatus as defined in claim 1, wherein: The mounting hole (2) matches the first threaded hole (4), and the hardened head (1) and the wear-resistant layer (3) are mounted together by screws (5).

3. The multi-material compatible tube blank piercing mandrel device according to claim 1, characterized in that: The right end of the mounting hole (2) is provided with a second threaded hole (6), and a connecting rod (7) is threadedly connected in the second threaded hole (6). The lower end of the mounting hole (2) is fixedly connected with a tail (8). The inner wall of the tail (8) is provided with multiple limiting holes (9). The surface of the connecting rod (7) is provided with two symmetrically arranged movable grooves (10). Limiting balls (11) are movably connected in the two movable grooves (10). The inner wall of the connecting rod (7) is provided with a square groove (12). A strip block (13) is rotatably connected to the inner wall of the square groove (12). A spring (14) is fixedly connected to the lower left surface of the strip block (13). The spring (14) is fixedly connected to the inner wall of the square groove (12). A limit switch (15) is fixedly connected to the upper surface of the strip block (13). The limit switch (15) is provided on the surface of the tail (8).

4. The multi-material adapter tube blank piercing punch apparatus of claim 3, wherein: Multiple limiting holes (9) are spaced equally between each other, and the limiting holes (9) are matched with the limiting balls (11).

5. The multi-material compatible tube blank piercing mandrel device according to claim 3, characterized in that: The two strip blocks (13) have protrusions fixedly connected to their left upper surfaces, and the two protrusions are set against the limiting ball (11).

6. The multi-material adapter tube blank piercing punch apparatus of claim 1, wherein: The hardened head (1) is made of cemented carbide, and the mounting hole (2) and the wear-resistant layer (3) are made of cobalt-based high-temperature alloy.

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