Straightening machine for high-precision seamless steel pipe production
By introducing internal straightening components and a chain drive mechanism into the straightening machine, the problems of internal depressions and iron filings in seamless steel pipes are solved, achieving a highly efficient and clean straightening process.
Patent Information
- Application Number
- CN202520346177.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-02-28
AI Technical Summary
Existing straightening machines are unable to effectively correct the internal concave deformation of seamless steel pipes, and they also have difficulty handling the iron filings that fall off during the straightening process, resulting in dirty and messy equipment.
A high-precision straightening machine for seamless steel pipe production was designed. It adopts an internal straightening component and a chain drive mechanism, including a fixed end plate, a tightening screw, an inner straightening mold, and a locking nut, to achieve synchronous straightening of the steel pipe inside and outside. The slide table design facilitates the discharge of iron filings.
It effectively corrects internal depressions in seamless steel pipes, improves straightening effect, facilitates cleaning of iron filings, reduces equipment dirt and grime, and optimizes the straightening process.
Smart Images
Figure CN223801240U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to steel pipe straightening technical field especially relates to a high accuracy seamless steel tube production is with straightening machine. BACKGROUND
[0002] Straightening equipment is the equipment for straightening metal bars, pipes, wires and the like. In the rolling machinery, the straightening machine can be divided into several types according to structural features, such as pressure straightening machine, roller straightening machine, pipe and bar straightening machine, stretching straightening machine and stretching and bending straightening machine. In the process of straightening the thin-walled seamless steel pipe by the straightening machine or equipment, because the steel pipe wall is thin, after straightening, the steel pipe will have the inward indentation in some areas. Because the existing straightening machine is used for straightening the outside of the steel pipe, the internal indentation deformation cannot be perfectly corrected and reset, and subsequent rework is required. In addition, the iron rust and iron chips falling during the steel pipe straightening process are difficult to handle, and long-term use will cause the internal dirtiness of the equipment.
[0003] Therefore, it is necessary to invent a high-precision seamless steel pipe straightening machine. CONTENT OF THE UTILITY MODEL
[0004] In order to solve the above technical problems, the utility model provides a high-precision seamless steel pipe straightening machine, which comprises a steel pipe straightening machine body, a steel pipe inner straightening part and a chain transmission mechanism, the steel pipe straightening machine body is fixedly installed with the steel pipe inner straightening part, and the outer side of the steel pipe straightening machine body is fixedly installed with the chain transmission mechanism.
[0005] The steel pipe inner straightening part comprises a fixed end plate, a tightening screw rod, a straightening inner mold and a locking nut, the fixed end plate is fixedly installed on the steel pipe straightening machine body, the inner side of the fixed end plate is fixedly installed with one end of the tightening screw rod, the tightening screw rod is slidably installed with a plurality of straightening inner molds, and the two sides of each straightening inner mold are provided with locking nuts.
[0006] The chain transmission mechanism is used for the transmission of the steel pipe straightening machine body.
[0007] Preferably, the steel pipe straightening machine body comprises a straightening machine frame, a sliding table, an upper straightening roller set, a lower straightening roller set, a driving motor and a straightening sleeve plate, the fixed end plate is fixedly installed on the straightening machine frame, the upper tight screw is arranged on the inner side of the straightening machine frame, the sliding table is fixedly installed below the inner side of the straightening machine frame, the upper straightening roller set is rotatably installed above the inner side of the straightening machine frame, the lower straightening roller set is rotatably installed in the straightening machine frame, one end of a straightening roller of the lower straightening roller set is rotatably arranged through the straightening machine frame and is fixedly connected with the output end of the driving motor, the driving motor is fixedly installed on the straightening machine frame, the chain transmission mechanism is arranged on the outer side of the straightening machine frame, the other end of two straightening rollers of the lower straightening roller set is rotatably arranged through the straightening machine frame and is fixedly connected with the chain disc of the chain transmission mechanism, and the straightening sleeve plate is fixedly installed on the straightening machine frame.
[0008] Preferably, the sliding table is an equilateral triangle, the two sides of the sliding table have iron scrap retention areas, the iron scrap retention areas are arranged at the positions of the two ends of the inner side of the straightening machine frame, and the straightening machine frame is in the shape of a 'N' character.
[0009] Preferably, the upper straightening roller set and the lower straightening roller set are provided with the upper tight screw, the middle region of the upper tight screw is provided with threads, and the two end regions of the upper tight screw are not provided with threads.
[0010] Preferably, the straightening inner die is a circular ring sleeve, and the straightening inner die is in contact with the inner surface of the seamless steel pipe.
[0011] Compared with the prior art, the thin-walled seamless pipe has the following beneficial effects:
[0012] In the process of straightening the thin-walled seamless pipe, the steel pipe inner straightening part is in close contact with the inside of the thin-walled seamless steel pipe, the straightening treatment of the inside and outside of the thin-walled seamless steel pipe can be performed at the same time, the internal recessed area of the steel pipe can be directly corrected and reset, the straightening treatment of the thin-walled seamless steel pipe is greatly improved, subsequent rework treatment is avoided, the circular arc of the steel pipe is optimized, in addition, the shape of the straightening machine frame and the sliding table can cause the iron scrap and the iron scrap falling inside to fall to the two sides of the steel pipe straightening machine body, the subsequent cleaning treatment of the workers is facilitated, and the overall equipment is kept clean and tidy. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 is a structure schematic diagram of the utility model after assembly.
[0014] Figure 2 is a structure schematic diagram of the utility model Figure 1 .
[0015] Figure 3 is a structure schematic diagram of the utility model Figure 1 .
[0016] In the drawings:
[0017] Steel pipe straightener body 1, straightener frame 11, sliding table 12, upper straightening roller set 13, lower straightening roller set 14, drive motor 15, straightening sleeve 16, steel pipe inner straightening part 2, fixed end plate 21, upper tightening screw 22, straightening inner mold 23, locking nut 24, chain transmission mechanism 3. DETAILED DESCRIPTION
[0018] In order to make the person skilled in the art better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.
[0019] In the description of the embodiments, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "provided with", "connection" and the like should be understood in a broad sense, for example, "connection" can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0020] As shown in the accompanying Figure 1 to the accompanying Figure 3 As shown:
[0021] The utility model provides a kind of straightening machine for high-precision seamless steel pipe production, including steel pipe straightener body 1, steel pipe inner straightening part 2 and chain transmission mechanism 3, steel pipe inner straightening part 2 is fixedly installed on steel pipe straightener body 1, chain transmission mechanism 3 is fixedly installed on the outside of steel pipe straightener body 1, the mutual cooperation of steel pipe straightener body 1 and steel pipe inner straightening part 2 is straightened to thin-walled seamless steel pipe.
[0022] The steel pipe inner straightening device 2 comprises a fixed end plate 21, a tightening screw 22, an inner straightening die 23 and a locking nut 24, the fixed end plate 21 is fixedly installed on the steel pipe straightening machine body 1, one end of the tightening screw 22 is fixedly installed on the inner side of the fixed end plate 21, a plurality of the inner straightening dies 23 are slidably installed on the tightening screw 22, the locking nuts 24 are arranged on the two sides of each of the inner straightening dies 23, the locking nuts 24 are threadedly installed on the tightening screw 22, and the inner straightening die 23 is used for straightening the inner concave area of the thin-walled seamless steel pipe.
[0023] The chain transmission mechanism 3 is used for transmission of the steel pipe straightening machine body 1, and the chain transmission mechanism 3 is a chain mechanism in the prior art, mainly comprising two chain plates and a chain.
[0024] Embodiment one:
[0025] Specifically, the steel pipe straightening machine body 1 comprises a straightening machine rack 11, a sliding table 12, an upper straightening roller set 13, a lower straightening roller set 14, a driving motor 15 and a straightening sleeve plate 16, the fixed end plate 21 is fixedly installed on the straightening machine rack 11, the tightening screw 22 is arranged on the inner side of the straightening machine rack 11, the sliding table 12 is fixedly installed on the inner side of the straightening machine rack 11, the upper straightening roller set 13 is rotatably installed on the upper side of the inner side of the straightening machine rack 11, the lower straightening roller set 14 is arranged below the upper straightening roller set 13, the lower straightening roller set 14 is rotatably installed on the inner side of the straightening machine rack 11, one end of one of the straightening rollers of the lower straightening roller set 14 rotatably penetrates through the straightening machine rack 11 and is fixedly connected with the output end of the driving motor 15, the driving motor 15 is fixedly installed on the straightening machine rack 11, the chain transmission mechanism 3 is arranged on the outer side of the straightening machine rack 11, the other end of the other two straightening rollers of the lower straightening roller set 14 rotatably penetrates through the straightening machine rack 11 and is fixedly connected with the chain plate of the chain transmission mechanism 3, the straightening sleeve plate 16 is fixedly installed on the straightening machine rack 11, and the straightening sleeve plate 16 is used for rectifying and positioning the thin-walled seamless steel pipe.
[0026] Specifically, the sliding table 12 is an equilateral triangle, the two sides of the sliding table 12 have an iron filings retention area allowing iron filings to be retained, the iron filings retention area is arranged at the positions of the two ends of the inner side of the straightening machine rack 11, and the straightening machine rack 11 is in the shape of a ‘N’ as a whole. The iron filings or rust falling from the thin-walled seamless pipe slides to the iron filings retention area, and the sliding table 12 is used for guiding the iron filings or rust to slide.
[0027] Specifically, the tightening screw 22 is arranged between the upper straightening roller set 13 and the lower straightening roller set 14, the middle region of the tightening screw 22 is provided with threads, and the two end regions of the tightening screw 22 are not provided with threads, and the tightening screw 22 is used for adjusting and locking the inner straightening die 23.
[0028] Specifically, the inner straightening die 23 is a circular ring sleeve, and the inner straightening die 23 is in contact with the inner surface of the seamless steel pipe.
[0029] Embodiment two:
[0030] When the thin-walled seamless steel pipe needs to be straightened, the driving motor 15 of the steel pipe straightening machine body 1 is turned on, the driving motor 15 drives two straightening rollers of the lower straightening roller set 14 through the chain transmission mechanism 3, one end of the steel pipe is inserted into the straightening sleeve plate 16 of the steel pipe straightening machine body 1, the steel pipe passes through the straightening sleeve plate 16, the outer surface of the steel pipe is in contact with the upper straightening roller set 13 and the lower straightening roller set 14, the rotating straightening rollers of the lower straightening roller set 14 drive the steel pipe to convey, at this time, the upper tightening screw rod 22 of the steel pipe inner straightening part 2 is in the inside of the steel pipe, the upper straightening roller set 13 and the lower straightening roller set 14 straighten the steel pipe during the conveying of the steel pipe, the straightening inner die 23 in the inside is in contact with the inside of the steel pipe, so the straightening inner die 23 can correct the recessed area of the steel pipe and reset it, and correct the circular degree of the steel pipe, thereby greatly improving the straightening effect of the steel pipe, in addition, during the straightening process, the rust or iron filings generated by the steel pipe can fall on the sliding table 12 of the steel pipe straightening machine body 1, the sliding table 12 is provided with a slope, so that the rust or iron filings can slide to the iron filings retaining areas at the two ends of the inside of the straightening machine rack 11, thereby facilitating the workers to handle the rust or iron filings.
[0031] The technical scheme disclosed by the utility model, or the technical scheme inspired by the technical scheme of the utility model by the person skilled in the art, or the similar technical scheme designed by the person skilled in the art based on the technical scheme of the utility model, and achieving the above technical effects, all fall within the protection scope of the utility model.
Claims
1. A high-precision straightening machine for producing seamless steel pipes, characterized in that, The utility model provides a steel pipe straightening machine, which comprises a steel pipe straightening machine body (1), a steel pipe inner straightening part (2) and a chain transmission mechanism (3), the steel pipe inner straightening part (2) is fixedly installed on the steel pipe straightening machine body (1), and the chain transmission mechanism (3) is fixedly installed on the outer side of the steel pipe straightening machine body (1). The steel pipe inner straightening part (2) comprises a fixed end plate (21), a tightening screw rod (22), a straightening inner die (23) and a locking nut (24), the fixed end plate (21) is fixedly installed on the steel pipe straightening machine body (1), one end of the tightening screw rod (22) is fixedly installed on the inner side of the fixed end plate (21), a plurality of straightening inner dies (23) are slidably installed on the tightening screw rod (22), locking nuts (24) are arranged on the two sides of each straightening inner die (23), and the locking nuts (24) are threadedly installed on the tightening screw rod (22). The chain transmission mechanism (3) is used for the transmission of the steel pipe straightening machine body (1).
2. The high-precision seamless steel pipe production straightening machine according to claim 1, characterized in that: The steel pipe straightening machine body (1) comprises a straightening machine rack (11), a sliding table (12), an upper straightening roller group (13), a lower straightening roller group (14), a driving motor (15) and a straightening sleeve plate (16), the fixed end plate (21) is fixedly installed on the straightening machine rack (11), the tightening screw rod (22) is arranged on the inner side of the straightening machine rack (11), the sliding table (12) is fixedly installed on the inner side of the straightening machine rack (11) in a lower position, the upper straightening roller group (13) is rotatably installed on the inner side of the straightening machine rack (11) in an upper position, the lower straightening roller group (14) is rotatably installed in the straightening machine rack (11), one end of one straightening roller of the lower straightening roller group (14) penetrates through the straightening machine rack (11) and is fixedly connected with the output end of the driving motor (15), the driving motor (15) is fixedly installed on the straightening machine rack (11), the chain transmission mechanism (3) is arranged on the outer side of the straightening machine rack (11), the other end of the other two straightening rollers of the lower straightening roller group (14) penetrates through the straightening machine rack (11) and is fixedly connected with the chain disc of the chain transmission mechanism (3), and the straightening sleeve plate (16) is fixedly installed on the straightening machine rack (11).
3. The high-precision seamless steel pipe production straightening machine according to claim 2, characterized in that: The sliding table (12) is an equilateral triangle, the two sides of the sliding table (12) have iron filings retention areas, the iron filings retention areas are arranged at the positions of the two ends of the inner side of the straightening machine rack (11), and the straightening machine rack (11) is in the shape of a 'n' as a whole.
4. The high-precision seamless steel pipe production straightening machine according to claim 2, characterized in that: The tightening screw rod (22) is arranged between the upper straightening roller group (13) and the lower straightening roller group (14), the middle region of the tightening screw rod (22) is provided with threads, and the two end regions of the tightening screw rod (22) are not provided with threads.
5. The high-precision seamless steel pipe production straightening machine according to claim 1, characterized in that: The straightening inner die (23) is a circular ring sleeve, and the straightening inner die (23) is in contact with the inner side surface of the seamless steel pipe.