Seamless steel tube forming die

Abstract

The utility model discloses a seamless steel pipe forming die, which relates to the field of steel pipe forming dies, and comprises a die main body, one end of the die main body is fixedly provided with a supporting and collecting assembly, the supporting and collecting assembly is composed of a supporting and collecting shell, a collecting pipeline and a splash-proof filtering cotton cushion, and the collecting pipeline is fixedly inserted on the supporting and collecting shell. A splash-proof filtering cotton cushion is fixedly installed in a supporting and collecting shell, a lubricating oil spraying assembly is fixedly installed on the supporting and collecting shell, and the lubricating oil spraying assembly is composed of an oil inlet pipeline, an oil spraying nozzle, a main pipeline and a branch pipeline. The lubricating oil spraying assembly can evenly spray lubricating oil on the surface of the steel pipe to be cold-drawn, so that the surface of the steel pipe is full of the lubricating oil, abrasion of the steel pipe and the outer mold in the cold-drawing process can be reduced, and the surface quality of the steel pipe in the cold-drawing process is improved.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe forming molds, and in particular to a seamless steel pipe forming mold. Background Technology

[0002] Seamless steel pipe is a type of steel pipe without weld seams, formed by piercing a single piece of round steel. Seamless steel pipes can be classified into several types based on their production methods, including hot-rolled, cold-rolled, and cold-drawn. A cold-drawing die for seamless steel pipes is a mold specifically designed for producing seamless steel pipes through the cold-drawing process. The cold-drawing process involves pressing the steel pipe through a die, thereby changing its shape and dimensions. Cold-drawing dies for seamless steel pipes allow for precise control of the pipe's dimensions and shape, while simultaneously improving the surface finish and the tightness of its internal structure.

[0003] The existing patent application CN202121834551.X proposes a cold-drawing die for seamless steel tubes used in automotive longitudinal thrust rods. By incorporating a lubrication channel, lubricant is added to the sizing section during forming, improving forming stability. The lubricant enters the buffer chamber from the upper inlet hole and then disperses into the sizing section through the overflow hole, ensuring uniform and stable lubricant flow. Excess lubricant flows downwards and is discharged through the overflow hole into the lower drain hole for recycling, preventing contamination of the processing environment by excessive lubricant and ensuring sufficient lubricant supply, further improving forming stability. However, its lubrication channel is directly located on the inner wall of the sizing section of the outer die. After cold drawing, the outer diameter of the steel pipe is similar to the inner diameter of the sizing section of the outer mold. This means that the steel pipe is in close contact with the inner wall of the sizing section of the outer mold, and the gap between them is small. As a result, the lubricating oil through the overflow hole cannot flow smoothly through the gap between the steel pipe and the inner wall of the sizing section of the outer mold. Consequently, the lubricating oil cannot be fully coated on the surface of the steel pipe, which affects the lubrication effect. This increases the friction in areas where no lubricating oil is applied, thus aggravating the wear of the mold and the steel pipe. It may also cause surface quality problems such as scratches and abrasions to occur in the steel pipe during cold drawing. At the same time, because the lubricating oil cannot flow smoothly through the gap between the steel pipe and the inner wall of the sizing section of the outer mold, the lower drain hole cannot effectively collect the lubricating oil. Utility Model Content

[0004] The main purpose of this utility model is to provide a seamless steel pipe forming mold, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A seamless steel pipe forming mold includes a mold body. A support and collection assembly is fixedly installed at one end of the mold body. The support and collection assembly consists of a support and collection shell, a collection pipe, and a splash-proof filter cotton pad. The collection pipe is fixedly inserted into the support and collection shell, and the splash-proof filter cotton pad is fixedly installed inside the support and collection shell. A lubricating oil spraying assembly is fixedly installed on the support and collection shell. The lubricating oil spraying assembly consists of an oil inlet pipe, an oil spray nozzle, a main pipe, and branch pipes. There are three branch pipes and three oil spray nozzles. The three branch pipes are fixedly installed on the main pipe, and the three oil spray nozzles are respectively fixedly installed on the three branch pipes. The oil inlet pipe is fixedly installed on the main pipe.

[0007] Preferably, the mold body consists of an outer shell, an outer mold, and an inner mold, with the outer shell fixedly fitted onto the outer mold and the inner mold located inside the outer mold.

[0008] Preferably, the support collection housing on the support collection assembly is fixedly installed at one end of the outer housing.

[0009] Preferably, the inner wall of the support collection housing on the support collection assembly is provided with a lubricating oil collection cavity, and an insertion through hole is provided on the upper side and the left and right side walls of the support collection housing, and the insertion through hole is connected to the lubricating oil collection cavity.

[0010] Preferably, the splash-proof filter pad on the support and collection assembly is installed at the lower part of the lubricating oil collection chamber, the collection pipe is fixedly inserted into the lower side wall of the support and collection housing, and the collection pipe is connected to the lubricating oil collection device.

[0011] Preferably, the branch pipes on the lubricating oil spraying assembly are fixedly inserted into the insertion through holes opened on the wall of the supporting collection housing. The main pipe and the oil inlet pipe are both located on the outside of the supporting collection housing. The oil spray nozzle is located in the lubricating oil collection chamber, and the oil inlet pipe is connected to the lubricating oil conveying equipment.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] By setting a support and collection component at one end of the mold body, and setting a lubricating oil spraying component on the support and collection component, the lubricating oil spraying component can evenly spray lubricating oil onto the surface of the steel pipe to be cold-drawn, so that the surface of the steel pipe is covered with lubricating oil, thereby reducing the wear of the steel pipe and the outer mold during the cold drawing process and improving the surface quality of the steel pipe during the cold drawing process; the support and collection component can effectively filter and recycle excess lubricating oil, thereby improving the utilization rate of lubricating oil and reducing the waste of lubricating oil. Attached Figure Description

[0014] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a cross-sectional structural diagram of the outer shell and outer mold of this utility model;

[0016] Figure 3 This is a cross-sectional view of the support and collection component of this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the lubricating oil spraying assembly of this utility model.

[0018] In the diagram: 1. Mold body; 2. Support and collection assembly; 3. Lubricating oil spraying assembly; 4. Oil inlet pipe; 5. Oil spray nozzle; 6. Outer shell; 7. Outer mold; 8. Inner mold; 9. Support and collection shell; 10. Lubricating oil collection chamber; 11. Insertion through hole; 12. Collection pipe; 13. Anti-splash filter pad; 14. Main pipe; 15. Branch pipe. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, a seamless steel pipe forming mold includes a mold body 1. A support and collection assembly 2 is fixedly installed at one end of the mold body 1. The support and collection assembly 2 consists of a support and collection shell 9, a collection pipe 12, and a splash-proof filter cotton pad 13. The collection pipe 12 is fixedly inserted into the support and collection shell 9, and the splash-proof filter cotton pad 13 is fixedly installed inside the support and collection shell 9. A lubricating oil spraying assembly 3 is fixedly installed on the support and collection shell 9. The lubricating oil spraying assembly 3 consists of an oil inlet pipe 4, an oil spray nozzle 5, a main pipe 14, and branch pipes 15. There are three branch pipes 15 and three oil spray nozzles 5. The three branch pipes 15 are fixedly installed on the main pipe 14, and the three oil spray nozzles 5 are respectively fixedly installed on the three branch pipes 15. The oil inlet pipe 4... Fixedly installed on the main pipe 14, the mold body 1 consists of an outer shell 6, an outer mold 7, and an inner mold 8. The outer shell 6 is fixedly fitted on the outer mold 7, and the inner mold 8 is located inside the outer mold 7. During the cold drawing production of seamless steel pipes, the seamless steel pipe blank can be supported and collected sequentially by the collection component 2 and passed through the outer mold 7 on the mold body 1. At this time, the lubricating oil spraying component 3 will spray lubricating oil evenly on the outer wall of the steel pipe, so that the friction between the steel pipe and the outer mold 7 is small when the steel pipe passes through the outer mold 7. The excess lubricating oil will fall onto the anti-splash filter cotton pad 13 in the lubricating oil collection chamber 10. Then, under the action of gravity, the lubricating oil will pass down through the anti-splash filter cotton pad 13. At this time, the anti-splash filter cotton pad 13 will filter out the impurities mixed in the lubricating oil.

[0021] Finally, by setting a support and collection component 2 at one end of the mold body 1, and setting a lubricating oil spraying component 3 on the support and collection component 2, the lubricating oil spraying component 3 can evenly spray lubricating oil onto the surface of the steel pipe to be cold drawn, so that the surface of the steel pipe is covered with lubricating oil, thereby reducing the wear of the steel pipe and the outer mold 7 during the cold drawing process and improving the surface quality of the steel pipe during the cold drawing process. The support and collection component 2 can effectively filter and recycle excess lubricating oil, thereby improving the utilization rate of lubricating oil and reducing the waste of lubricating oil.

[0022] Specifically, the support collection housing 9 on the support collection assembly 2 is fixedly installed at one end of the outer housing 6. A lubricating oil collection cavity 10 is provided on the inner wall of the support collection housing 9 on the support collection assembly 2. An insertion through hole 11 is provided on the upper side and the left and right side walls of the support collection housing 9, and the insertion through hole 11 is connected to the lubricating oil collection cavity 10. The splash-proof filter cotton pad 13 on the support collection assembly 2 is installed at the lower part of the lubricating oil collection cavity 10. The collection pipe 12 is fixedly inserted into the lower side wall of the support collection housing 9, and the collection pipe 12 is connected to the lubricating oil collection equipment. The lubricating oil filtered by the splash-proof filter cotton pad 13 will flow into the lubricating oil collection equipment through the collection pipe 12.

[0023] Specifically, the branch pipe 15 on the lubricating oil spraying assembly 3 is fixedly inserted into the insertion through hole 11 opened on the wall of the support and collection housing 9. The main pipe 14 and the oil inlet pipe 4 are both located outside the support and collection housing 9. The oil spray nozzle 5 is located in the lubricating oil collection chamber 10, and the oil inlet pipe 4 is connected to the lubricating oil conveying equipment. When the steel pipe passes through the support and collection assembly 2, the lubricating oil conveying equipment will transport the lubricating oil to the oil inlet pipe 4. Then the lubricating oil will pass through the main pipe 14 and the branch pipe 15 in sequence, and finally the lubricating oil will be sprayed onto the surface of the steel pipe by the oil spray nozzle 5.

[0024] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A seamless steel pipe forming mold, comprising a mold body (1), characterized in that: A support collection assembly (2) is fixedly installed at one end of the mold body (1). The support collection assembly (2) consists of a support collection shell (9), a collection pipe (12), and a splash-proof filter cotton pad (13). The collection pipe (12) is fixedly inserted into the support collection shell (9). The splash-proof filter cotton pad (13) is fixedly installed inside the support collection shell (9). A lubricating oil spraying assembly (3) is fixedly installed on the support collection shell (9). The lubricating oil spraying assembly (3) consists of an oil inlet pipe (4), an oil spray nozzle (5), a main pipe (14), and a branch pipe (15). There are three branch pipes (15) and three oil spray nozzles (5). The three branch pipes (15) are fixedly installed on the main pipe (14). The three oil spray nozzles (5) are fixedly installed on the three branch pipes (15). The oil inlet pipe (4) is fixedly installed on the main pipe (14).

2. The seamless steel pipe forming mold according to claim 1, characterized in that: The mold body (1) is composed of an outer shell (6), an outer mold (7) and an inner mold (8). The outer shell (6) is fixedly sleeved on the outer mold (7), and the inner mold (8) is located inside the outer mold (7).

3. The seamless steel pipe forming mold according to claim 2, characterized in that: The support collection housing (9) on the support collection assembly (2) is fixedly installed at one end of the outer housing (6).

4. The seamless steel pipe forming mold according to claim 3, characterized in that: The inner wall of the support collection housing (9) on the support collection assembly (2) is provided with a lubricating oil collection cavity (10). An insertion through hole (11) is provided on the upper side and the left and right side walls of the support collection housing (9), and the insertion through hole (11) is connected to the lubricating oil collection cavity (10).

5. A seamless steel pipe forming mold according to claim 4, characterized in that: The splash-proof filter pad (13) on the support collection assembly (2) is installed at the lower part of the lubricating oil collection chamber (10), and the collection pipe (12) is fixedly inserted into the lower side wall of the support collection housing (9), and the collection pipe (12) is connected to the lubricating oil collection device.

6. The seamless steel pipe forming mold according to claim 5, characterized in that: The branch pipe (15) on the lubricating oil spraying assembly (3) is fixedly inserted into the insertion through hole (11) opened on the wall of the supporting collection housing (9). The main pipe (14) and the oil inlet pipe (4) are both located outside the supporting collection housing (9). The oil spray nozzle (5) is located in the lubricating oil collection chamber (10), and the oil inlet pipe (4) is connected to the lubricating oil conveying equipment.

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