Seamless steel tube inner hole polishing device

Abstract

The utility model relates to a seamless steel pipe inner hole polishing device which comprises a rack, a movable seat is arranged on the rack, a driving shaft in transmission connection with a first motor is rotationally arranged on the movable seat, a polishing wheel is fixedly connected to the end of the driving shaft, and an outer supporting sleeve surrounding the driving shaft is fixedly connected to the movable seat. An annular first blocking plate located on the rear side of the polishing wheel is fixedly connected to the end of the outer supporting sleeve, an annular first scraping ring made of a flexible material is fixedly arranged at the outer side end of the first blocking plate, and the outer diameter of the first scraping ring is matched with the inner diameter of the seamless steel pipe. The end, away from the polishing wheel, of the outer supporting sleeve is fixedly connected with a waste discharge connecting pipe communicating with the outer supporting sleeve. According to the seamless steel pipe inner hole polishing device, chippings and dust generated by polishing can be discharged from the seamless steel pipe in time, the working environment is kept clean and tidy, the personal health of workers is guaranteed, the chippings and the dust attached to the inner hole wall of the seamless steel pipe can be scraped away, machining procedures are reduced, and the production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of seamless steel pipe production equipment, and in particular to a polishing device for the inner hole of a seamless steel pipe. Background Technology

[0002] According to production needs, seamless steel pipes require polishing of their inner bore walls after forming to ensure the smoothness of the inner bore. Existing technologies, such as the utility model patent "A Steel Pipe Inner Bore Polishing Machine" (Publication No.: CN221936390U), disclose a method that uses a polishing wheel that extends into the steel pipe and contacts the inner bore wall to rotate and feed along the axial direction of the steel pipe to polish the inner bore. However, in this structure, the debris and dust generated when the polishing wheel polishes the inner bore wall of the steel pipe will be dispersed into the environment through the pipe's port, causing significant dust in the working environment. This is detrimental to the cleanliness of the working environment and the health of the workers. Furthermore, after polishing, the debris adheres to the inner bore wall of the steel pipe, requiring subsequent cleaning such as blowing, which increases production costs.

[0003] To address the aforementioned problems, this utility model provides improvements. Utility Model Content

[0004] This utility model proposes a seamless steel pipe inner hole polishing device, which solves the above-mentioned problems existing in the use of the prior art.

[0005] The technical solution of this utility model is implemented as follows:

[0006] A seamless steel pipe inner hole polishing device includes a frame, a movable seat on the frame, a drive shaft rotatably mounted on the movable seat and connected to a first motor, a polishing wheel fixedly connected to the end of the drive shaft, an outer support sleeve fixedly connected to the movable seat surrounding the drive shaft, a first annular baffle plate located behind the polishing wheel fixedly connected to the end of the outer support sleeve, a first scraper ring made of flexible material fixedly mounted on the outer end of the first baffle plate, the outer diameter of the first scraper ring matching the inner diameter of the seamless steel pipe, and a waste discharge pipe communicating with the outer support sleeve fixedly connected to the end of the outer support sleeve away from the polishing wheel.

[0007] Preferably, an inner support sleeve located inside the outer support sleeve is fixedly connected to the movable seat, the drive shaft is rotatably disposed inside the inner support sleeve, and the end of the inner support sleeve is connected to the end of the outer support sleeve by a plurality of support rods, so that a plurality of first waste outlets are formed between the end of the inner support sleeve and the end of the outer support sleeve.

[0008] Preferably, the first barrier plate is funnel-shaped and the small end of the first barrier plate is fixedly connected to the outer support sleeve.

[0009] Preferably, the inner wall of the first scraper ring is provided with a first connecting ring groove that matches the outer end of the first barrier plate, the side wall of the first connecting ring groove is formed with a first limiting protrusion, the side of the first barrier plate is provided with a first limiting ring groove that matches the first limiting protrusion, and the outer end of the first barrier plate is inserted into the first connecting ring groove so that the first limiting protrusion is engaged in the first limiting ring groove, thereby realizing the fixed connection between the first scraper ring and the first barrier plate.

[0010] Preferably, the drive shaft end is hollow and has a transition cavity. The drive shaft end face has a plurality of second-row waste ports communicating with the transition cavity, and a connecting rod is fixedly connected to the drive shaft end face. A second baffle plate located in front of the polishing wheel is fixedly connected to the connecting rod. A second scraping ring made of flexible material in an annular shape is fixedly provided on the outer end of the second baffle plate. The outer diameter of the second scraping ring matches the inner diameter of the seamless steel pipe. The drive shaft has a plurality of third-row waste ports communicating with the transition cavity and located between the first baffle plate and the polishing wheel.

[0011] Preferably, a second connecting ring groove matching the outer end of the second barrier plate is formed on the inner wall of the second scraper ring, a second limiting protrusion is formed on the side wall of the second connecting ring groove, and a second limiting ring groove matching the second limiting protrusion is formed on the side of the second barrier plate. The outer end of the second barrier plate is inserted into the second connecting ring groove so that the second limiting protrusion is engaged in the second limiting ring groove, thereby realizing the fixed connection between the second scraper ring and the second barrier plate.

[0012] Preferably, the outer support sleeve has a cleaning port, and a cleaning cover plate is hinged to the cleaning port. The cleaning cover plate is fastened to the outer support sleeve by fasteners to close the cleaning port.

[0013] In summary, the beneficial effects of this utility model are as follows: When the moving seat drives the drive shaft to extend the polishing wheel into the seamless steel pipe to polish the inner wall of the seamless steel pipe, the first baffle plate and the first scraper ring are driven into the seamless steel pipe by the outer support sleeve, so that the first scraper ring abuts against the inner wall of the seamless steel pipe and scrapes. The debris and dust generated when the polishing wheel polishes the inner wall of the seamless steel pipe are promptly discharged by the vacuum cleaner after passing through the outer support sleeve, reducing the spread of debris and dust in the working environment, which is conducive to maintaining a clean working environment and ensuring the personal safety of workers. Furthermore, the scraping of the first scraper ring on the inner wall of the seamless steel pipe removes the debris and dust attached to the inner wall of the seamless steel pipe, keeping the inner wall of the polished seamless steel pipe clean, saving the subsequent cleaning process, and reducing production costs. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a cross-sectional view of the present invention;

[0017] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0019] Figure 5 for Figure 3 Enlarged view of point C in the middle;

[0020] Figure 6 This is a schematic diagram of the structure of the outer support sleeve and the inner support sleeve in this utility model;

[0021] Figure 7 This is a partially exploded view of the present invention.

[0022] In the diagram: 1. Frame; 11. Linear guide rail; 12. Drive screw; 13. Second motor; 2. Moving seat; 3. First motor; 4. Drive shaft; 41. Transition cavity; 42. Second waste outlet; 43. Connecting rod; 44. Second baffle plate; 441. Second limiting ring groove; 45. Second scraper ring; 451. Second connecting ring groove; 452. Second limiting protrusion ring; 46. Third waste outlet; 5. Polishing wheel; 6. Outer support sleeve; 61. First baffle plate; 611. First limiting ring groove; 62. First scraper ring; 621. First connecting ring groove; 622. First limiting protrusion ring; 63. Waste discharge pipe; 64. Cleaning port; 65. Cleaning cover plate; 7. Inner support sleeve; 71. Support rod; 72. First waste outlet. Detailed Implementation

[0023] The following will refer to the appendix in the embodiments of this utility model. Figure 1-7The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] As shown in the figure, a seamless steel pipe inner hole polishing device includes a frame 1, a movable seat 2 is provided on the frame 1, the movable seat 2 is slidably provided on the frame 1 via a linear guide rail 11, a transmission screw 12 is rotatably provided on the frame 1 and screwed to the movable seat 2 and driven by a second motor 13 provided on the frame 1, a drive shaft 4 is rotatably provided on the movable seat 2 and driven by a first motor 3 provided on the movable seat 2, a polishing wheel 5 is fixedly connected to the end of the drive shaft 4, an outer support sleeve 6 is fixedly connected to the movable seat 2 surrounding the drive shaft 4, a first annular barrier plate 61 located behind the polishing wheel 5 is fixedly connected to the end of the outer support sleeve 6, a first scraping ring 62 made of flexible material is fixedly provided on the outer end of the first barrier plate 61, the outer diameter of the first scraping ring 62 matches the inner diameter of the seamless steel pipe, and a waste discharge pipe 63 communicating with the outer support sleeve 6 is fixedly connected to the end of the outer support sleeve 6 away from the polishing wheel 5.

[0025] In the above structure, when polishing the inner hole of the seamless steel pipe, the seamless steel pipe is fixed on a fixture (the structure of the fixture is existing technology and will not be described in detail here). The waste discharge pipe 63 is connected to an external vacuum cleaner. The second motor 13 drives the transmission screw 12 to rotate. The transmission screw 12 drives the moving seat 2 to slide on the linear guide rail 11 through a screw connection with the moving seat 2. The moving seat 2 drives the outer support sleeve 6 and the drive shaft 4 to move towards the seamless steel pipe. At the same time, the first motor 3 drives the drive shaft 4 to rotate the polishing wheel 5. The polishing wheel 5 and the first baffle plate 61 are inserted into the seamless steel pipe under the drive of the drive shaft 4 and the outer support sleeve 6, respectively, so that the outer ends of the polishing wheel 5 and the first scraper ring 62 abut against the inner wall of the seamless steel pipe. When the rotating polishing wheel 5 polishes the inner wall of the seamless steel pipe, the external vacuum cleaner works, and the polishing debris and dust are collected by the vacuum cleaner. The suction force enters the outer support sleeve 6 through its port and is sucked away by the vacuum cleaner after passing through the waste discharge pipe 63. At the same time, the first scraper ring 62, which moves with the outer support sleeve 6 inside the seamless steel pipe, scrapes the inner wall of the seamless steel pipe, removing the debris and dust adhering to the inner wall of the seamless steel pipe. This debris and dust are then sucked away by the vacuum cleaner through the port of the outer support sleeve 6. In this way, the debris and dust generated when the polishing wheel 5 polishes the inner wall of the seamless steel pipe are promptly removed by the vacuum cleaner after passing through the outer support sleeve 6, reducing the spread of debris and dust in the working environment. This helps to maintain a clean working environment and ensure the personal safety of workers. Furthermore, the scraping action of the first scraper ring 62 on the inner wall of the seamless steel pipe removes the debris and dust adhering to the inner wall of the seamless steel pipe, keeping the inner wall of the polished seamless steel pipe clean, saving subsequent cleaning processes, and reducing production costs.

[0026] Furthermore, based on the above structure, an inner support sleeve 7 located inside the outer support sleeve 6 is fixedly connected to the movable seat 2. The drive shaft 4 is rotatably disposed inside the inner support sleeve 7. The end of the inner support sleeve 7 is connected to the end of the outer support sleeve 6 by several support rods 71, so that several first rows of waste openings 72 are formed between the end of the inner support sleeve 7 and the end of the outer support sleeve 6. The inner support sleeve 7 provides support for the end of the drive shaft 4, ensuring that when the drive shaft 4 is driven by the first motor 3 to rotate and drive the polishing wheel 5 to rotate, it is relatively stable relative to the outer support sleeve 6. The coaxiality of the support sleeve 6 ensures that the polishing wheel 5 and the first barrier plate 61 remain relatively stable in the radial direction, thus guaranteeing that the polishing wheel 5 and the first barrier plate 61 can move stably inside the seamless steel pipe. Furthermore, the inner support sleeve 7 encloses the drive shaft 4 inside, preventing the rotating drive shaft 4 from agitating the debris and dust entering between the outer support sleeve 6 and the inner support sleeve 7 through the first waste discharge port 72. This ensures that the debris and dust can flow between the outer support sleeve 6 and the inner support sleeve 7 and are eventually sucked away by the vacuum cleaner through the waste discharge pipe 63.

[0027] Furthermore, based on the above structure, the first barrier plate 61 is funnel-shaped and its small end is fixedly connected to the outer support sleeve 6. The funnel-shaped first barrier plate 61 allows the debris and dust generated between the polishing wheel 5 and the first barrier plate 61 to be concentrated at the small end of the first barrier plate 61 along the inner wall of the first barrier plate 61 and better sucked away and discharged by the vacuum cleaner through the first waste outlet 72, thus achieving a better waste discharge effect.

[0028] Furthermore, based on the above structure, a first connecting ring groove 621 matching the outer end of the first barrier plate 61 is provided on the inner wall of the first scraper ring 62. A first limiting protrusion 622 is formed on the side wall of the first connecting ring groove 621. A first limiting ring groove 611 matching the first limiting protrusion 622 is provided on the side of the first barrier plate 61. The outer end of the first barrier plate 61 is inserted into the first connecting ring groove 621, so that the first limiting protrusion 622 is engaged in the first limiting ring groove 611, thereby realizing the fixed connection between the first scraper ring 62 and the first barrier plate 61. The cooperation between the first limiting protrusion 622 and the first limiting ring groove 611 ensures the stability of the first hanging ring fixedly connected to the outer end of the first barrier plate 61. Moreover, the above structure allows the first scraper ring 62 to be separated from the first barrier plate 61, which facilitates the replacement of the worn first hanging ring during use, so as to ensure that the first scraper ring 62 is always in close contact with the inner wall of the seamless steel pipe to scrape off debris and dust, thus ensuring the cleaning effect.

[0029] Furthermore, based on the above structure, the drive shaft 4 has a hollow end forming a transition cavity 41. Several second-row waste ports 42 communicating with the transition cavity 41 are opened on the end face of the drive shaft 4, and a connecting rod 43 is fixedly connected to the end face of the drive shaft 4. A second baffle plate 44 located in front of the polishing wheel 5 is fixedly connected to the connecting rod 43. A second scraping ring 45 made of flexible material is fixedly installed on the outer end of the second baffle plate 44. The outer diameter of the second scraping ring 45 matches the inner diameter of the seamless steel pipe. Several third-row waste ports 46 communicating with the transition cavity 41 and located between the first baffle plate 61 and the polishing wheel 5 are opened on the drive shaft 4. Simultaneously, as the polishing wheel 5 and the first baffle plate 61 penetrate into the seamless steel pipe, the second baffle plate 44, driven by the connecting rod 43, penetrates into the seamless steel pipe, causing the second scraping ring 45 to contact the inner wall of the seamless steel pipe. Some of the debris and dust generated by the polishing wheel 5 polishing the inner wall of the seamless steel pipe will fall between the polishing wheel 5 and the second baffle plate 44. Due to the first… The scraper ring 62 and the second scraper ring 45 are always in contact with the inner wall of the seamless steel pipe. Under the action of the vacuum cleaner, the space between them is in a negative pressure state. The debris and dust falling between the polishing wheel 5 and the second baffle plate 44 enter the transition chamber 41 through the second waste outlet 42, and exit the transition chamber 41 through the third waste outlet 46 into the space between the first baffle plate 61 and the polishing wheel 5. After passing through the first waste outlet 72, they enter the space between the outer support sleeve 6 and the inner support sleeve 7, and are finally sucked away by the vacuum cleaner after passing through the waste discharge pipe 63. In this way, the debris and dust generated between the polishing wheel 5 and the second baffle plate 44 are also discharged in time, further reducing the spread of debris and dust to the working environment and achieving a better waste discharge effect. It should be noted that since the high-speed rotation of the drive shaft 4 may result in low efficiency of debris and dust passing through the second waste outlet 42 and the third waste outlet 46, in actual operation, the operation of the first motor 3 and the second motor 13 can be stopped appropriately to ensure the discharge of debris and dust.

[0030] Furthermore, based on the above structure, a second connecting ring groove 451 matching the outer end of the second baffle plate 44 is provided on the inner wall of the second scraper ring 45. A second limiting protrusion 452 is formed on the side wall of the second connecting ring groove 451. A second limiting ring groove 441 matching the second limiting protrusion 452 is provided on the side of the second baffle plate 44. The outer end of the second baffle plate 44 is inserted into the second connecting ring groove 451 so that the second limiting protrusion 452 is engaged in the second limiting ring groove 441, thereby achieving a fixed connection between the second scraper ring 45 and the second baffle plate 44. Similar to the first scraper ring 62, the above structure also facilitates the separation of the second scraper ring 45 and the second baffle plate 44, so as to ensure that the second scraper ring 45 is always in contact with the inner wall of the seamless steel pipe and thus ensures the waste discharge effect.

[0031] Furthermore, based on the above structure, the outer support sleeve 6 is provided with a cleaning port 64, and a cleaning cover plate 65 is hinged to the cleaning port 64. The cleaning cover plate 65 is fastened to the outer support sleeve 6 by fasteners to close the cleaning port 64. By flipping the cleaning cover plate 65 to open the cleaning port 64, the debris and dust remaining in the outer support sleeve 6 can be cleaned, ensuring the smooth flow of debris and dust between the outer support sleeve 6 and the inner support sleeve 7 and ensuring the waste discharge effect. In order to enhance the sealing performance when the cleaning cover is flipped to close the cleaning port 64, a sealing strip can be provided at the joint between the cleaning cover plate 65 and the cleaning port 64.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A seamless steel pipe inner hole polishing device, comprising a frame (1), a movable seat (2) provided on the frame (1), a drive shaft (4) rotatably mounted on the movable seat (2) and driven by a first motor (3), and a polishing wheel (5) fixedly connected to the end of the drive shaft (4), characterized in that: An outer support sleeve (6) surrounding the drive shaft (4) is fixedly connected to the movable seat (2). A first barrier plate (61) in the shape of an annulus located behind the polishing wheel (5) is fixedly connected to the end of the outer support sleeve (6). A first scraper ring (62) in the shape of an annulus made of flexible material is fixedly provided on the outer end of the first barrier plate (61). The outer diameter of the first scraper ring (62) matches the inner diameter of the seamless steel pipe. A waste discharge pipe (63) communicating with the outer support sleeve (6) is fixedly connected to the end of the outer support sleeve (6) away from the polishing wheel (5).

2. The seamless steel pipe inner hole polishing device according to claim 1, characterized in that: The movable seat (2) is fixedly connected to an inner support sleeve (7) located inside the outer support sleeve (6). The drive shaft (4) is rotatably disposed inside the inner support sleeve (7). The end of the inner support sleeve (7) is connected to the end of the outer support sleeve (6) by a number of support rods (71), so that a number of first waste outlets (72) are formed between the end of the inner support sleeve (7) and the end of the outer support sleeve (6).

3. The seamless steel pipe inner hole polishing device according to claim 2, characterized in that: The first barrier plate (61) is funnel-shaped and the small end of the first barrier plate (61) is fixedly connected to the outer support sleeve (6).

4. The seamless steel pipe inner hole polishing device according to claim 3, characterized in that: The inner wall of the first scraper ring (62) is provided with a first connecting ring groove (621) that matches the outer end of the first barrier plate (61). A first limiting protrusion (622) is formed on the side wall of the first connecting ring groove (621). A first limiting ring groove (611) that matches the first limiting protrusion (622) is provided on the side of the first barrier plate (61). The outer end of the first barrier plate (61) is inserted into the first connecting ring groove (621) so that the first limiting protrusion (622) is engaged in the first limiting ring groove (611), thereby achieving a fixed connection between the first scraper ring (62) and the first barrier plate (61).

5. The seamless steel pipe inner hole polishing device according to claim 4, characterized in that: The drive shaft (4) has a hollow end forming a transition cavity (41). The drive shaft (4) has several second-row waste ports (42) communicating with the transition cavity (41) on its end face. A connecting rod (43) is fixedly connected to the drive shaft (4) end face. A second baffle plate (44) located in front of the polishing wheel (5) is fixedly connected to the connecting rod (43). A second scraping ring (45) made of flexible material is fixedly provided on the outer end of the second baffle plate (44). The outer diameter of the second scraping ring (45) matches the inner diameter of the seamless steel pipe. The drive shaft (4) has several third-row waste ports (46) communicating with the transition cavity (41) and located between the first baffle plate (61) and the polishing wheel (5).

6. The seamless steel pipe inner hole polishing device according to claim 5, characterized in that: The inner wall of the second scraper ring (45) is provided with a second connecting ring groove (451) that matches the outer end of the second barrier plate (44). A second limiting protrusion (452) is formed on the side wall of the second connecting ring groove (451). A second limiting ring groove (441) that matches the second limiting protrusion (452) is provided on the side of the second barrier plate (44). The outer end of the second barrier plate (44) is inserted into the second connecting ring groove (451) so that the second limiting protrusion (452) is engaged in the second limiting ring groove (441), thereby achieving a fixed connection between the second scraper ring (45) and the second barrier plate (44).

7. The seamless steel pipe inner hole polishing device according to claim 6, characterized in that: The outer support sleeve (6) has a cleaning port (64), and a cleaning cover plate (65) is hinged to the cleaning port (64). The cleaning cover plate (65) is fastened to the outer support sleeve (6) by fasteners to close the cleaning port (64).

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