Straightening device for seamless steel pipe machining

Abstract

The application discloses a straightening device for seamless steel pipe machining and particularly relates to the technical field of seamless steel pipe machining, which comprises a base, a scraping piece for cleaning the seamless steel pipe is arranged at the front end of the base, a straightening piece for machining the seamless steel pipe is arranged at the rear side of the scraping piece, the straightening piece comprises two supporting seats arranged at the top of the base, a driving motor is arranged on the base, a driving shaft of the driving motor is provided with a driving gear, a fixed ring is arranged on the driving shaft, a plurality of pinion gears are arranged on the fixed ring, a plurality of toothed rings are arranged on the pinion gears, a plurality of supporting tubes are arranged on the toothed rings, a plurality of straightening rollers are arranged on the supporting tubes, a plurality of adjusting seats are arranged on the straightening rollers, and a plurality of shaping pieces are arranged on the adjusting seats. The application drives the fixed ring and the toothed rings on the fixed ring to rotate through the meshing of the pinion gears and the gear, drives the plurality of pinion gears to rotate synchronously through the meshing of the toothed rings, drives the adjusting seats and the straightening rollers on the shaping pieces to move towards the center, realizes the effect of limiting seamless steel pipes of different specifications in multiple directions, drives the supporting tubes and the plurality of straightening rollers to rotate through the meshing of the second gear and the first gear, and the straightening rollers apply uniform and continuous radial pressure and multidirectional bending stress to the seamless steel pipe, so that the straightness and the roundness of the seamless steel pipe are corrected, and the practicability of the product is improved.

Description

Technical Field

[0001] This invention relates to the field of seamless steel pipe processing technology, and more specifically to a straightening device for seamless steel pipe processing. Background Technology

[0002] Seamless steel pipe is a type of metal pipe with a hollow cross-section and no seams, produced through processes such as piercing and rolling. Due to its excellent characteristics such as continuous overall structure, high strength, strong pressure resistance, and uniform cross-section, it is widely used in important industrial fields and fluid transportation systems such as petroleum, chemical, power, machinery manufacturing, and boilers. During the production process of seamless steel pipe, multiple processes such as rolling, heat treatment, cooling, and sizing are required, inevitably resulting in shape defects such as bending and ovality (non-roundness). These defects not only affect the appearance quality and dimensional accuracy of the product, but also seriously impair its mechanical properties, assembly performance, and subsequent processing performance. Therefore, straightening is an essential and critical finishing process to ensure that seamless steel pipe meets the requirements for use.

[0003] As shown in the prior art disclosed in CN214488355U, although the straightening mechanism in this prior art starts the second stepper motor to adjust the height of the straightening roller, and the cooperation of the positive and negative threaded rods and connecting blocks helps to adjust the height of the mounting plate; the setting of support components helps to stabilize the straightened seamless steel pipe; the feeding mechanism sends out the seamless steel pipe through the feeding roller, without the need for manual assistance in moving the steel pipe; the chip removal mechanism uses a negative pressure fan to generate negative pressure to adsorb debris into the collection box, and a filter screen is set on the top of the collection box to prevent large debris from falling in; the guiding mechanism guides the seamless steel pipe through the cooperation of the second cylinder and the guiding roller. However, the contact surface between the straightening mechanism and the seamless steel pipe in this prior art is fixed, and the straightening surface of the seamless steel pipe is also small and not comprehensive, which affects the straightening effect of the seamless steel pipe. Summary of the Invention

[0004] To overcome the aforementioned deficiencies of the prior art, the present invention provides a straightening device for seamless steel pipe processing. The meshing of a secondary gear and a driven gear drives a fixed ring and its gear ring to rotate. The meshing of the gear ring drives multiple driven gears to rotate synchronously, thereby moving the adjusting seat and straightening rollers on the shaping component towards the center. This achieves the effect of defining seamless steel pipes of different specifications from multiple directions. Furthermore, the meshing of a second gear with the first gear drives the support pipe and multiple straightening rollers to rotate. The straightening rollers apply uniform and continuous radial pressure and multi-directional bending stress to the seamless steel pipe, thereby correcting its straightness and roundness, improving the practicality of the product, and solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a straightening device for processing seamless steel pipes, comprising a base, wherein a scraper for cleaning seamless steel pipes is provided on the outer front end of the base, and a straightening device for processing seamless steel pipes is provided on the rear side of the scraper. The straightening component includes two support seats on the top of the base, a support tube connected by a bearing between the two support seats, a common support shell on the top of the two support seats, a drive component for driving the support tube inside the support shell, multiple sets of shaping components for straightening seamless steel pipes inside the support tube, and a power component for driving the multiple sets of shaping components outside the support tube. The power component includes a fixed tube that is movably sleeved outside the support tube via a bearing. A gear ring and a main gear are sequentially sleeved outside the fixed tube from front to back. Multiple spaced-apart driven gears mesh on the front side of the gear ring. A secondary gear meshes at the top of the main gear. A main motor for driving the secondary gear is installed on the rear side of the top of the support shell.

[0006] In a preferred embodiment, the shaping component includes an adjusting shaft movably connected to the support tube via a bearing. An adjusting seat is externally threaded to the end of the adjusting shaft away from the support tube. An adjusting frame is installed at the end of the adjusting seat away from the adjusting shaft. A straightening roller is provided inside the adjusting frame. Multiple universal balls arranged in a circular array are installed outside the straightening roller. A connecting rod for connecting the adjusting shaft is installed from the side of the gear near the support tube.

[0007] In a preferred embodiment, the adjusting seat has fixed grooves on both sides, and a fixed rod with an L-shaped cross-section is provided inside the end of the fixed groove away from the supporting tube. The end of the fixed rod away from the fixed groove is fixed to the supporting tube.

[0008] In a preferred embodiment, the driving component includes a first gear sleeved on the outside of the front end of the support tube, a second gear meshing at the top of the first gear, a support plate for connecting the support shell on the rear side of the second gear, and an auxiliary motor for driving the second gear installed on the front side of the support plate.

[0009] In a preferred embodiment, the scraper includes two fixed seats located at the top front end of the base. The fixed seats are located on the front side of the support base. A fixed tube is installed between the two fixed seats via a bearing. Multiple telescopic rods arranged in a circular array are installed inside the fixed tube. A scraper is installed at the end of the telescopic rod away from the fixed tube, and a spring is sleeved on the outside of the end of the telescopic rod near the scraper. The front end of the scraper is designed to be arc-shaped, and multiple rollers are installed at intervals on the outside of the front end of the scraper.

[0010] In a preferred embodiment, a third gear is sleeved on the front end of the fixed tube, a linkage shaft is provided at the top of the third gear, a fourth gear that meshes with the third gear is sleeved on the front end of the linkage shaft, and the rear end of the linkage shaft passes through the support shell and is fixed together with the second gear.

[0011] In a preferred embodiment, a sealing box is provided between the bottom ends of the two fixed seats. The sealing box is sleeved on the outside of the fixed tube, and multiple spaced material holes are opened on the outside of the fixed tube. Each material hole is located between two adjacent telescopic rods.

[0012] In a preferred embodiment, a fan is embedded on one side of the bottom of the sealing box, and a through hole is opened on the side of the bottom of the sealing box away from the fan. A collection box extending into the sealing box is provided inside the through hole, and a filter screen is embedded on the side of the collection box near the fan.

[0013] In a preferred embodiment, a positioning frame is sleeved on the outside of the linkage shaft and movably connected by a bearing. The front side of the bottom end of the positioning frame is fixed together with a fixing seat located on the rear side of the fixing tube.

[0014] The technical effects and advantages of this invention are as follows: 1. The meshing of the secondary gear and the driven gear drives the fixed ring and the gear ring on it to rotate. The meshing of the gear ring drives multiple driven gears to rotate synchronously, thereby driving the adjusting seat and straightening roller on the shaping part to move towards the center, achieving the effect of limiting seamless steel pipes of different specifications in multiple directions. Then, the meshing of the second gear and the first gear drives the support pipe and multiple straightening rollers to rotate. The straightening rollers apply uniform and continuous radial pressure and multi-directional bending stress to the seamless steel pipe, thereby correcting its straightness and roundness and improving the practicality of this product. 2. The arc surface of the scraper allows the seamless steel pipe to gradually compress the multiple scrapers supported by the springs, so that the scrapers adhere to the outside of the seamless steel pipe, thereby automatically cleaning seamless steel pipes of different specifications. Then, the meshing of the fourth gear and the third gear drives the fixed pipe and the scraper to rotate, thereby cleaning the seamless steel pipe in all directions. 3. By coordinating the blower and the material hole, the swept impurities can be sucked into the collection box, and the impurities can be collected into the collection box by the filter screen, thereby improving the convenience of the collection box. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a rear view of the support base of the present invention; Figure 3 This is an exploded view of the collection box of the present invention; Figure 4 This is a rear view of the mounting base of the present invention; Figure 5 This is a side sectional view of the support shell of the present invention; Figure 6 For the present invention Figure 5 Enlarged view of section A in the middle; Figure 7 This is a cross-sectional view of the adjustment seat of the present invention.

[0016] The attached diagram is labeled as follows: 1. Base; 2. Support seat; 3. Support tube; 4. Support shell; 5. Fixed tube; 6. Gear ring; 7. Main gear; 8. Driven gear; 9. Secondary gear; 10. Main motor; 11. Adjusting shaft; 12. Adjusting seat; 13. Adjusting frame; 14. Straightening roller; 15. Universal ball; 16. Connecting rod; 17. Fixed groove; 18. Fixed rod; 19. First gear; 20. Second gear; 21. Support plate; 22. Secondary motor; 23. Fixed seat; 24. Fixed ring; 25. Telescopic rod; 26. Scraper; 27. Spring; 28. Roller; 29. ​​Third gear; 30. Linkage shaft; 31. Fourth gear; 32. Sealing box; 33. Material hole; 34. Fan; 35. Through hole; 36. Collection box; 37. Filter screen; 38. Positioning frame. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 scope of protection of the present invention.

[0018] Refer to the instruction manual appendix Figure 1-7 This invention provides a straightening device for processing seamless steel pipes, comprising a base 1. A scraper for cleaning the seamless steel pipe is located on the outer front end of the base 1, and a straightening component for processing the seamless steel pipe is located on the rear side of the scraper. The straightening component includes two support seats 2 located on the top of the base 1, with a support tube 3 movably connected between the two support seats 2 via bearings. A common support shell 4 is mounted on the top of the two support seats 2. A driving component for driving the support tube 3 is located inside the support shell 4. Multiple sets of shaping components for straightening the seamless steel pipe are installed inside the support tube 3, and a power component for driving the multiple sets of shaping components is located outside the support tube 3. The power component includes a fixing ring 24 movably sleeved on the outside of the support tube 3 via bearings. A gear ring 6 and a main gear 7 are sequentially sleeved on the outside of the fixing ring 24 from front to back. Multiple spaced-apart driven gears 8 mesh with the front side of the gear ring 6, and a secondary gear 9 meshes with the top of the main gear 7. A main motor 10 for driving the secondary gear 9 is mounted on the rear side of the top of the support shell 4.

[0019] During the processing of seamless steel pipes, the seamless steel pipes are conveyed to the scraper by an external feeding device, where the scraper cleans away debris and impurities from the outside of the seamless steel pipes. The scraper includes two fixed seats 23 located at the top front end of the base 1, which are positioned in front of the support base 2. A fixed pipe 5, movably connected by bearings, is installed between the two fixed seats 23. Multiple telescopic rods 25 arranged in a circular array are installed inside the fixed pipe 5. A scraper 26 is installed at the end of each telescopic rod 25 away from the fixed pipe 5, and a spring 27 is sleeved on the outside of the end of the telescopic rod 25 closest to the scraper 26. The front end of the scraper 26 has an arc-shaped cross-section, and multiple spaced rollers 28 are installed on the outside of the front end of the scraper 26. Thus, when the seamless steel pipe is conveyed into the fixed pipe 5, it first contacts the arc surface of the scraper 26, and the arc surface gradually compresses the multiple scrapers 26 supported by the springs 27, causing the scrapers 26 to adhere to the outside of the seamless steel pipe, thereby achieving the effect of automatically cleaning seamless steel pipes of different specifications.

[0020] The roller 28 reduces the contact area between the scraper 26 and the seamless steel pipe, transforming sliding friction into sliding friction, thereby reducing wear and ensuring the service life and performance of the scraper 26.

[0021] Meanwhile, to improve the cleaning effect on the seamless steel pipe, it is necessary to drive the fixed pipe 5 to rotate. Therefore, a third gear 29 is sleeved on the outer front end of the fixed pipe 5, and a linkage shaft 30 is provided at the top of the third gear 29. A fourth gear 31 that meshes with the third gear 29 is sleeved on the outer front end of the linkage shaft 30, and the rear end of the linkage shaft 30 passes through the support shell 4 and is fixed together with the second gear 20. In this way, the fourth gear 31 can drive the third gear 29 to rotate, the third gear 29 can then drive the fixed pipe 5 to rotate, and drive multiple scrapers 26 to rotate around the seamless steel pipe, thereby achieving a comprehensive cleaning effect on the seamless steel pipe.

[0022] To prevent swept-off impurities from contaminating the working environment, a sealing box 32 is provided between the bottom ends of the two fixed seats 23. The sealing box 32 is fitted over the fixed tube 5, and the fixed tube 5 has multiple spaced material holes 33, each located between two adjacent telescopic rods 25. A fan 34 is embedded on one side of the bottom of the sealing box 32, and a through hole 35 is provided on the side of the bottom of the sealing box 32 away from the fan 34. A collection box 36 extending into the sealing box 32 is provided inside the through hole 35, and a filter screen 37 is embedded on the side of the collection box 36 closest to the fan 34. In this way, the fan 34 can be activated to draw outside air into the sealing box 32 through the material holes 33. The guided airflow can carry the swept-off impurities into the collection box 36, and the filter screen 37 can collect the impurities into the collection box 36, thus achieving centralized collection of impurities.

[0023] To ensure the effective collection of the collection box 36, it needs to be cleaned regularly. Therefore, the collection box 36 can be pulled out through the through hole 35 to facilitate cleaning.

[0024] To ensure the operational stability of the fixed tube 5, the linkage shaft 30 on the fourth gear 31 needs to be connected to the drive device. Furthermore, to ensure the stability of the linkage shaft 30, a positioning frame 38, movably connected via bearings, is fitted around the linkage shaft 30. The front bottom end of the positioning frame 38 is fixed to the fixing seat 23 located behind the fixed tube 5. This allows the positioning frame 38 to limit and support the linkage shaft 30, ensuring its operational stability and preventing imbalance or twisting during operation.

[0025] When the fixed tube 5 is driven by the drive unit, the cleaned seamless steel pipe is also transported to the support tube 3 by the external feeding equipment. Before the drive unit is started, multiple sets of shaping parts need to be operated to contact the seamless steel pipe. The shaping parts include an adjusting shaft 11 that is movably connected to the support tube 3 through a bearing. An adjusting seat 12 is externally threaded to the end of the adjusting shaft 11 away from the support tube 3. An adjusting frame 13 is installed at the end of the adjusting seat 12 away from the adjusting shaft 11. A straightening roller 14 is provided inside the adjusting frame 13. Multiple universal balls 15 arranged in a ring array are installed on the outside of the straightening roller 14. A connecting rod 16 for connecting the adjusting shaft 11 is installed from the side of the gear 8 near the support tube 3. This drives the main motor 10 to rotate the auxiliary gear 9. The auxiliary gear 9 drives the fixed ring 24 and the gear ring 6 on it to rotate through the meshing driven gear 8. The gear ring 6 meshes and drives multiple driven gears 8 to rotate synchronously. The driven gears 8 then drive the adjusting shaft 11 to rotate through the connecting rod 16. The adjusting shaft 11 drives the adjusting seat 12 and the straightening roller 14 to move towards the center until all the straightening rollers 14 contact and press the seamless steel pipe. The seamless steel pipe is then straightened by the straightening rollers 14. After the seamless steel pipe is initially straightened by multiple straightening rollers 14, the support pipe 3 is rotated by a driving component, which in turn drives the fixed pipe 5 to rotate. The driving component includes a first gear 19 sleeved on the front end of the support pipe 3, with a second gear 20 meshing at the top of the first gear 19. A support plate 21 for connecting the support shell 4 is provided behind the second gear 20, and an auxiliary motor 22 for driving the second gear 20 is installed on the front side of the support plate 21. In this way, the auxiliary motor 22 can be started, driving the second gear 20 to rotate. The second gear 20 drives the linkage shaft 30 to rotate the fourth gear 31. The fourth gear 31 drives the fixed pipe 5 and the scraper 26 on it to rotate through the meshing third gear 29, thereby driving the scraper 26 to clean the seamless steel pipe. The second gear 20 simultaneously drives the support tube 3 to rotate through the meshing first gear 19. The support tube 3 then drives multiple straightening rollers 14 to rotate around the seamless steel pipe. The straightening rollers 14 apply uniform and continuous radial pressure and multi-directional bending stress to the seamless steel pipe, thereby correcting its straightness and roundness. To ensure the stability of the adjusting seat 12 and the straightening roller 14 during displacement, fixed grooves 17 are provided on both sides of the adjusting seat 12. An L-shaped fixed rod 18 is provided inside the end of the fixed groove 17 away from the support tube 3. The end of the fixed rod 18 away from the fixed groove 17 is fixed to the support tube 3. This engagement between the fixed rod 18 and the fixed groove 17 limits the position of the adjusting seat 12, ensuring the stability of the adjusting seat 12 when it drives the straightening roller 14 to move.

[0026] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A straightening device for seamless steel pipe processing, comprising a base (1), characterized in that: The base (1) has a scraper for cleaning seamless steel pipes on the front side, and a straightening component for processing seamless steel pipes is provided on the rear side of the scraper. The straightening component includes two support seats (2) on the top of the base (1), a support tube (3) connected by bearings is installed between the two support seats (2), the top of the two support seats (2) is equipped with the same support shell (4), the support shell (4) is provided with a driving component for driving the support tube (3), the support tube (3) is provided with multiple sets of shaping components for straightening seamless steel pipes, and the support tube (3) is provided with a power component for driving multiple sets of shaping components on the outside; The power component includes a fixed ring (24) that is movably sleeved on the outside of the support tube (3) via a bearing. A gear ring (6) and a main gear (7) are sequentially sleeved on the outside of the fixed ring (24) from front to back. Multiple spaced slave gears (8) are meshed on the front side of the gear ring (6). A secondary gear (9) is meshed on the top of the main gear (7). A main motor (10) for driving the secondary gear (9) is installed on the rear side of the top of the support shell (4).

2. The straightening device for seamless steel pipe processing according to claim 1, characterized in that: The shaping component includes an adjusting shaft (11) movably connected to the support tube (3) via a bearing. An adjusting seat (12) is externally threaded to one end of the adjusting shaft (11) away from the support tube (3). An adjusting frame (13) is installed at one end of the adjusting seat (12) away from the adjusting shaft (11). A straightening roller (14) is provided inside the adjusting frame (13). Multiple universal balls (15) arranged in a ring array are installed outside the straightening roller (14). A connecting rod (16) for connecting the adjusting shaft (11) is installed from the side of the gear (8) near the support tube (3).

3. The straightening device for seamless steel pipe processing according to claim 2, characterized in that: The adjusting seat (12) has fixed grooves (17) on both sides. The fixed groove (17) is provided with a fixed rod (18) with an L-shaped cross section at the end away from the support tube (3). The end of the fixed rod (18) away from the fixed groove (17) is fixed together with the support tube (3).

4. The straightening device for seamless steel pipe processing according to claim 1, characterized in that: The driving component includes a first gear (19) sleeved on the outside of the front end of the support tube (3), a second gear (20) meshing at the top of the first gear (19), a support plate (21) for connecting the support shell (4) is provided on the rear side of the second gear (20), and an auxiliary motor (22) for driving the second gear (20) is installed on the front side of the support plate (21).

5. A straightening device for seamless steel pipe processing according to claim 4, characterized in that: The scraper includes two fixed seats (23) located at the top front end of the base (1). The fixed seats (23) are located on the front side of the support base (2). A fixed tube (5) is installed between the two fixed seats (23) and is movably connected by a bearing. Multiple telescopic rods (25) arranged in a ring array are installed inside the fixed tube (5). A scraper (26) is installed at the end of the telescopic rod (25) away from the fixed tube (5), and a spring (27) is sleeved on the outside of the end of the telescopic rod (25) near the scraper (26). The front end section of the scraper (26) is arc-shaped, and multiple rollers (28) are installed at intervals on the outside of the front end of the scraper (26).

6. A straightening device for seamless steel pipe processing according to claim 5, characterized in that: The front end of the fixed tube (5) is fitted with a third gear (29), the top end of the third gear (29) is fitted with a linkage shaft (30), the front end of the linkage shaft (30) is fitted with a fourth gear (31) that meshes with the third gear (29), and the rear end of the linkage shaft (30) passes through the support shell (4) and is fixed together with the second gear (20).

7. A straightening device for seamless steel pipe processing according to claim 5, characterized in that: A sealing box (32) is provided between the bottom ends of the two fixed seats (23). The sealing box (32) is sleeved on the outside of the fixed tube (5), and multiple spaced material holes (33) are provided on the outside of the fixed tube (5). Each material hole (33) is located between two adjacent telescopic rods (25).

8. A straightening device for seamless steel pipe processing according to claim 7, characterized in that: A fan (34) is embedded on one side of the bottom of the sealing box (32). A through hole (35) is opened on the side of the bottom of the sealing box (32) away from the fan (34). A collection box (36) extending into the sealing box (32) is provided inside the through hole (35), and a filter screen (37) is embedded on the side of the collection box (36) near the fan (34).

9. A straightening device for seamless steel pipe processing according to claim 6, characterized in that: The linkage shaft (30) is fitted with a positioning frame (38) that is movably connected by a bearing. The front side of the bottom end of the positioning frame (38) is fixed together with the fixing seat (23) located behind the fixing tube (5).

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