Steel pipe interior polishing and grinding equipment for steel pipe manufacturing

Abstract

The steel pipe interior polishing and grinding equipment for steel pipe manufacturing comprises a machine base, a machine shell is fixedly connected to one end of the top of the machine base, a driving motor is fixedly installed on one side of the machine shell, and the output end of the driving motor is fixedly connected with a grinding roller extending to the position above the machine base; the steel pipe polishing device is reasonable in structural design and convenient and fast to operate, through the arranged limiting auxiliary mechanism, the steel pipe limiting mechanism and the steel pipe moving mechanism, effective fixing and moving of a steel pipe can be achieved, the stability of the steel pipe in the polishing and grinding process is guaranteed, the polishing efficiency is improved, and the polishing quality of the steel pipe is improved. And meanwhile, by arranging a fine grinding wheel, an intermediate grinding wheel and a coarse grinding wheel, multi-stage polishing and grinding can be conducted on the inner wall of the steel pipe, the polishing and grinding effect is improved, the inner wall of the steel pipe is smoother, friction resistance is reduced, the use performance of the steel pipe is improved, and therefore the equipment has wide application prospects in the field of steel pipe manufacturing.

Description

Technical Field

[0001] The present invention relates to the technical field of steel pipe manufacturing, and particularly to an internal polishing and grinding device for steel pipes used in steel pipe manufacturing. Background Art

[0002] In the traditional steel pipe manufacturing process, the internal polishing and grinding of steel pipes often rely on manual operation, which is not only inefficient but also difficult to ensure the consistency and quality of polishing and grinding. In addition, manual operation also has safety hazards. For example, improper operation may cause injuries to workers. With the development of technology, although some steel pipe internal polishing and grinding devices with relatively high automation have emerged in the market, these devices often have complex structures, cumbersome operations, and poor adaptability to steel pipes of different specifications, and cannot meet the requirements of modern steel pipe manufacturing for high efficiency, high quality, and high adaptability. Therefore, there is an urgent need for a new type of internal polishing and grinding device for steel pipes used in steel pipe manufacturing to solve the problems existing in the prior art. Summary of the Invention

[0003] The purpose of the present invention is to provide an internal polishing and grinding device for steel pipes used in steel pipe manufacturing to solve the problems mentioned in the above background art that with the development of technology, although some steel pipe internal polishing and grinding devices with relatively high automation have emerged in the market, these devices often have complex structures, cumbersome operations, and poor adaptability to steel pipes of different specifications, and cannot meet the requirements of modern steel pipe manufacturing for high efficiency, high quality, and high adaptability.

[0004] To achieve the above object, the present invention provides the following technical solution: A steel pipe internal polishing and grinding device for steel pipe manufacturing, including a machine base, one end of the top of the machine base is fixedly connected with a machine shell, one side of the machine shell is fixedly installed with a driving motor, the output end of the driving motor is fixedly connected with a grinding rod extending above the machine base, the front end of the grinding rod is fixedly connected with a fine grinding wheel, an intermediate grinding wheel, a rough grinding wheel and a front rod in sequence, the front of the machine shell is fixedly installed with a PLC controller, the other end of the top of the machine base is fixedly connected with a limit assisting mechanism, and two steel pipe limit mechanisms and two steel pipe moving mechanisms are fixedly installed on the top of the machine base between the machine shell and the limit assisting mechanism. The two steel pipe moving mechanisms are located between the two steel pipe limit mechanisms, and the two steel pipe moving mechanisms are located on both sides of the grinding rod. Both of the two steel pipe limit mechanisms include a plurality of clamping components and a connecting rod, and the plurality of clamping components are connected in series through the connecting rod. The PLC controller is electrically connected with the driving motor. Before polishing and grinding the inner wall of the steel pipe, the steel pipe is slid forward from the limit assisting mechanism, so that the front rod enters the inside of the steel pipe. Then the two steel pipe moving mechanisms clamp and fix the steel pipe, and then drive the steel pipe to move, so as to polish and grind the inner wall of the steel pipe in sequence through the rough grinding wheel, the intermediate grinding wheel and the fine grinding wheel, improve the smoothness of the inner wall of the steel pipe, and reduce the frictional resistance of the inner wall of the steel pipe. During the process of the two steel pipe moving mechanisms driving the steel pipe to move, the clamping components of the two steel pipe limit mechanisms work successively, and every time two opposite clamping components work simultaneously. As the steel pipe moving mechanism passes by, the clamping components clamp the steel pipe to improve the stability of the steel pipe.

[0005] As a preferred technical solution of the present invention, a protective cover is provided on the top of the machine base on one side of the machine shell, and the two steel pipe limit mechanisms and the two steel pipe moving mechanisms are located inside the protective cover. The protective cover reduces the powder generated by the polishing and grinding of the steel pipe flying in all directions.

[0006] As a preferred technical solution of the present invention, the other side of the machine shell is fixedly connected with a fixing plate, the top of the fixing plate is fixedly installed with a bearing, and the bearing is rotationally connected with the grinding rod. The setting of the bearing reduces the resistance of the grinding rod to rotate and improves the rotation speed and stability of the grinding rod.

[0007] As a preferred technical solution of the present invention, the surface roughness of the fine grinding wheel is less than the surface roughness of the intermediate grinding wheel, and the surface roughness of the intermediate grinding wheel is less than the surface roughness of the rough grinding wheel, so as to perform multi-stage polishing and grinding on the inner wall of the steel pipe and improve the polishing and grinding effect.

[0008] As a preferred technical solution of the present invention, the limit assisting mechanism includes a second base. A steel pipe limit seat is fixedly connected to the top of the second base. Limit assisting plates are fixedly connected to both sides of the top of the steel pipe limit seat. A steel pipe limit groove located between the two limit assisting plates is formed in the steel pipe limit seat. The front roller is opposite to the steel pipe limit groove. The second base is fixed to the top of the machine base. Before polishing the inner wall of the steel pipe, the steel pipe is slid forward from the steel pipe limit groove, so that the front roller enters the inside of the steel pipe.

[0009] As a preferred technical solution of the present invention, each of the plurality of clamping assemblies includes a first base, a first bottom plate, a moving seat one, and a limit clamp. The top of the first base is fixedly connected to the bottom of the first bottom plate. Two first chutes are formed on one side of the top of the first bottom plate. A first slider is slidably connected to each of the two first chutes. The tops of the two first sliders are fixedly connected to the bottom of the moving seat one. One side of the moving seat one is fixedly connected to one side of the limit clamp. An installation plate one is fixedly connected to the other side of the top of the first bottom plate. A plurality of first cylinders are fixedly installed on one side of the installation plate one. The output ends of the plurality of first cylinders are fixedly connected to the other side of the moving seat one. The PLC controller is electrically connected to the plurality of first cylinders. The plurality of first cylinders drive the moving seat one and the limit clamp connected to the moving seat one to move. The two symmetric limit clamps move towards each other until they are completely closed. After closing, the diameter of the gap between the two limit clamps is slightly larger than the diameter of the steel pipe. The steel pipe can still slide after the limit clamps are completely closed, but it cannot move laterally, thereby realizing the limitation of the steel pipe.

[0010] As a preferred technical solution of the present invention, the plurality of first bases are all fixedly arranged on the connecting rod, and the plurality of first bases are all fixedly installed on the top of the machine base.

[0011] As a preferred technical solution of the present invention, both of the two steel pipe moving mechanisms include a driving motor, a slide rail, a second bottom plate, a second moving seat and a fixing fixture. A third chute is provided at the top of the slide rail. A screw rod is arranged in the third chute. One end of the screw rod is connected to the output end of the driving motor. A third slider which is in sliding connection with the third chute is threadedly connected to the screw rod. The top of the third slider is fixedly connected to the bottom of the second bottom plate. Two second chutes are provided on one side of the top of the second bottom plate. A second slider is slidably connected in each of the two second chutes. The tops of the two second sliders are fixedly connected to the bottom of the second moving seat. One side of the second moving seat is fixedly connected to one side of the fixing fixture. On the other side of the top of the second bottom plate, a second mounting plate is fixedly connected. A plurality of second cylinders are fixedly installed on one side of the second mounting plate. The output ends of the plurality of second cylinders are all fixedly connected to the other side of the second moving seat. A plurality of uniformly distributed mounting seats are fixedly arranged on one side of the slide rail. Sensors are fixedly installed on the tops of the plurality of mounting seats. The PLC controller is electrically connected to the plurality of sensors, the plurality of second cylinders and the two driving motors, so as to drive the steel pipe to move. When the sensor senses the moving second bottom plate, the sensor sends a signal to the PLC controller, and the PLC controller controls the plurality of clamping assemblies to open or close. When the steel pipe is polished, the two steel pipe moving mechanisms move forward. The clamping assemblies after the two steel pipe moving mechanisms pass by are successively closed. After the steel pipe is polished, the two steel pipe moving mechanisms move backward, and the clamping assemblies in the advancing direction of the two steel pipe moving mechanisms are successively opened.

[0012] As a preferred technical solution of the present invention, the plurality of sensors are correspondingly arranged with the second bottom plate, and the two slide rails are fixedly installed on the top of the machine base.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: The device has a reasonable structural design and is convenient to operate. Through the arranged limiting and auxiliary mechanism, the steel pipe limiting mechanism and the steel pipe moving mechanism, the effective fixing and moving of the steel pipe can be realized, ensuring the stability of the steel pipe during the polishing process. At the same time, through the arranged fine polishing wheel, intermediate polishing wheel and rough polishing wheel, the inner wall of the steel pipe can be polished at multiple levels, improving the polishing effect, making the inner wall of the steel pipe smoother, reducing the frictional resistance, and improving the service performance of the steel pipe. Therefore, the device has a wide application prospect in the field of steel pipe manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional view of the present invention; Figure 2 is a schematic diagram of a partial structure of the present invention Figure 1 ; Figure 3 is a schematic diagram of a partial structure of the present invention Figure 2 ; Figure 4 Schematic diagram of the local structure of the present invention Figure 3 ; Figure 5 Side view of the local structure of the present invention; Figure 6 Schematic diagram of the local structure of the present invention Figure 4 ; Figure 7 Stereogram of the grinding roller of the present invention; Figure 8 Stereogram of the limit assisting mechanism of the present invention; Figure 9 Stereogram of the steel pipe limit mechanism of the present invention; Figure 10 Stereogram of the clamping assembly of the present invention; Figure 11 Side view of the clamping assembly of the present invention; Figure 12 Stereogram of the steel pipe moving mechanism of the present invention.

[0015] In the figure: 1, machine base; 2, machine shell; 3, PLC controller; 4, limit assisting mechanism; 41, base two; 42, steel pipe limit seat; 43, limit assisting plate; 44, steel pipe limit groove; 5, protective cover; 6, grinding roller; 7, steel pipe limit mechanism; 71, clamping assembly; 711, base one; 712, bottom plate one; 713, moving seat one; 714, limit fixture; 715, mounting plate one; 716, cylinder one; 717, chute one; 718, slider one; 72, connecting rod; 8, steel pipe moving mechanism; 801, slide rail; 802, bottom plate two; 803, moving seat two; 804, fixed fixture; 805, driving motor; 806, slider three; 807, cylinder two; 808, mounting plate two; 809, chute three; 810, screw; 811, mounting seat; 812, sensor; 9, bearing; 10, fixing plate; 11, driving motor; 12, front roller; 13, rough grinding wheel; 14, intermediate grinding wheel; 15, fine grinding wheel. Detailed implementation manners

[0016] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0017] Please refer to Figure 1-12, the present invention provides an internal polishing and grinding device for steel pipe manufacturing, including a machine base 1. One end of the top of the machine base 1 is fixedly connected with a machine shell 2. One side of the machine shell 2 is fixedly installed with a driving motor 11. The output end of the driving motor 11 is fixedly connected with a grinding rod 6 extending above the machine base 1. The front end of the grinding rod 6 is successively fixedly connected with a fine grinding wheel 15, an intermediate grinding wheel 14, a rough grinding wheel 13 and a front rod 12. The front of the machine shell 2 is fixedly installed with a PLC controller 3. The other end of the top of the machine base 1 is fixedly connected with a limit and auxiliary mechanism 4. Two steel pipe limit mechanisms 7 and two steel pipe moving mechanisms 8 are fixedly installed on the top of the machine base 1 and are located between the machine shell 2 and the limit and auxiliary mechanism 4. The two steel pipe moving mechanisms 8 are located between the two steel pipe limit mechanisms 7. The two steel pipe moving mechanisms 8 are located on both sides of the grinding rod 6. The two steel pipe limit mechanisms 7 both include a plurality of clamping components 71 and a connecting rod 72. The plurality of clamping components 71 are connected in series through the connecting rod 72. The PLC controller 3 is electrically connected with the driving motor 11.

[0018] During use, before polishing and grinding the inner wall of the steel pipe, the steel pipe slides forward from the limit and auxiliary mechanism 4, so that the front rod 12 enters the inside of the steel pipe. Subsequently, the two steel pipe moving mechanisms 8 clamp and fix the steel pipe, and then drive the steel pipe to move, so as to polish and grind the inner wall of the steel pipe successively through the rough grinding wheel 13, the intermediate grinding wheel 14 and the fine grinding wheel 15, improving the smoothness of the inner wall of the steel pipe and reducing the frictional resistance of the inner wall of the steel pipe. During the process of the two steel pipe moving mechanisms 8 driving the steel pipe to move, the clamping components 71 of the two steel pipe limit mechanisms 7 work successively. Every time, two opposite clamping components 71 work simultaneously. As the steel pipe moving mechanism 8 passes by, the clamping components 71 clamp the steel pipe, improving the stability of the steel pipe.

[0019] The multiple clamping components 71 of the two steel pipe limit mechanisms 7 are arranged in pairs facing each other, and the two opposite clamping components 71 work synchronously.

[0020] A protective cover 5 is provided on the top of the machine base 1 and is located on one side of the machine shell 2. The two steel pipe limit mechanisms 7 and the two steel pipe moving mechanisms 8 are located inside the protective cover 5. The protective cover 5 reduces the powder generated by the polishing and grinding of the steel pipe that scatters and flies out.

[0021] The other side of the machine shell 2 is fixedly connected with a fixing plate 10. The top of the fixing plate 10 is fixedly installed with a bearing 9. The bearing 9 is rotationally connected with the grinding rod 6. The setting of the bearing 9 reduces the resistance of the grinding rod 6 to rotate, improving the rotation speed and stability of the grinding rod 6.

[0022] The surface roughness of the fine grinding wheel 15 is less than that of the intermediate grinding wheel 14, and the surface roughness of the intermediate grinding wheel 14 is less than that of the rough grinding wheel 13, performing multi-stage polishing and grinding on the inner wall of the steel pipe to improve the polishing and grinding effect.

[0023] The limit assist mechanism 4 includes a second base 41. A steel pipe limit seat 42 is fixedly connected to the top of the second base 41. Limit assist plates 43 are fixedly connected to both sides of the top of the steel pipe limit seat 42. A steel pipe limit groove 44 located between the two limit assist plates 43 is formed in the steel pipe limit seat 42. The front rod 12 faces the steel pipe limit groove 44. The second base 41 is fixed to the top of the machine base 1. Before polishing and grinding the inner wall of the steel pipe, the steel pipe is slid forward from the steel pipe limit groove 44, so that the front rod 12 enters the inside of the steel pipe.

[0024] Each of the plurality of clamping assemblies 71 includes a first base 711, a first bottom plate 712, a first moving seat 713, and a limit clamp 714. The top of the first base 711 is fixedly connected to the bottom of the first bottom plate 712. Two first chutes 717 are formed on one side of the top of the first bottom plate 712. A first slider 718 is slidably connected to each of the two first chutes 717. The tops of the two first sliders 718 are fixedly connected to the bottom of the first moving seat 713. One side of the first moving seat 713 is fixedly connected to one side of the limit clamp 714. A first mounting plate 715 is fixedly connected to the other side of the top of the first bottom plate 712. A plurality of first cylinders 716 are fixedly installed on one side of the first mounting plate 715. The output ends of the plurality of first cylinders 716 are fixedly connected to the other side of the first moving seat 713. The PLC controller 3 is electrically connected to the plurality of first cylinders 716. The plurality of first bases 711 are fixedly arranged on the connecting rod 72. The plurality of first bases 711 are fixedly installed on the top of the machine base 1. The PLC controller 3 controls the plurality of first cylinders 716 to work. The plurality of first cylinders 716 drive the first moving seat 713 and the limit clamp 714 connected to the first moving seat 713 to move. The two symmetric limit clamps 714 move towards each other until they are completely closed to limit the steel pipe.

[0025] The two steel pipe moving mechanisms 8 both include a driving motor 805, a slide rail 801, a second base plate 802, a second moving seat 803 and a fixing fixture 804. A third chute 809 is formed at the top of the slide rail 801. A screw rod 810 is arranged in the third chute 809. One end of the screw rod 810 is connected to the output end of the driving motor 805. A third slider 806 which is in threaded connection with the screw rod 810 and is slidably connected to the third chute 809 is arranged on the screw rod 810. The top of the third slider 806 is fixedly connected to the bottom of the second base plate 802. Two second chutes are formed on one side of the top of the second base plate 802. Second sliders are slidably connected in the two second chutes respectively. The tops of the two second sliders are fixedly connected to the bottom of the second moving seat 803. One side of the second moving seat 803 is fixedly connected to one side of the fixing fixture 804. A second mounting plate 808 is fixedly connected to the other side of the top of the second base plate 802. A plurality of second cylinders 807 are fixedly installed on one side of the second mounting plate 808. The output ends of the plurality of second cylinders 807 are all fixedly connected to the other side of the second moving seat 803. A plurality of uniformly distributed mounting seats 811 are fixedly arranged on one side of the slide rail 801. Sensors 812 are fixedly installed on the tops of the plurality of mounting seats 811. The PLC controller 3 is electrically connected to the plurality of sensors 812, the plurality of second cylinders 807 and the two driving motors 805. The plurality of sensors 812 are arranged corresponding to the second base plate 802. The two slide rails 801 are both fixedly installed on the top of the machine base 1. The PLC controller 3 controls the plurality of second cylinders 807 on the two steel pipe moving mechanisms 8 to work. The second cylinders 807 drive the second moving seat 803 and the fixing fixture 804 on the second moving seat 803 to move until the two fixing fixtures 804 are completely closed. After closing, the pore diameter between the two fixing fixtures 804 is slightly smaller than the diameter of the steel pipe. The two fixing fixtures 804 clamp and fix the steel pipe. Subsequently, the driving motor 805 works. The driving motor 805 drives the screw rod 810 to rotate, so as to drive the third slider 806 to slide along the third chute 809, thereby driving the steel pipe to move. When the sensor 812 senses the moving second base plate 802, the sensor 812 sends a signal to the PLC controller 3. The PLC controller 3 controls the plurality of clamping assemblies 71 to open or combine. When the steel pipe is polished, the two steel pipe moving mechanisms 8 move forward. The clamping assemblies 71 successively combine after the two steel pipe moving mechanisms 8 pass by. After the steel pipe is polished, the two steel pipe moving mechanisms 8 move backward. The clamping assemblies 71 in the advancing direction of the two steel pipe moving mechanisms 8 successively open.

[0026] When the embodiment of the present application is in use: the steel pipe to be polished is placed in the steel pipe limiting groove 44 of the limiting auxiliary mechanism 4, and slides forward along the steel pipe limiting groove 44 until the front end stick 12 enters the interior of the steel pipe. At this time, the PLC controller 3 is started, and the PLC controller 3 controls the two steel pipe moving mechanisms 8 to start working. The transmission motor 805 drives the screw 810 to rotate, and the screw 810 drives the slider 3 806 to slide in the slide groove 3 809, thereby driving the bottom plate 2 802, the moving seat 2 803 and the fixing clamp 804 to move. When the two fixing clamps 804 move toward each other to be completely closed, the diameter of the pore between the two fixing clamps 804 after closing is slightly smaller than the diameter of the steel pipe, thereby tightly clamping the fixed steel pipe; Subsequently, the PLC controller 3 controls the driving motor 11 to start, and the driving motor 11 drives the grinding rod 6 to rotate. During the rotation of the grinding rod 6, the inner wall of the steel pipe is polished and ground in sequence by the coarse grinding wheel 13, the intermediate grinding wheel 14 and the fine grinding wheel 15. At the same time, the PLC controller 3 controls the two steel pipe moving mechanisms 8 to drive the steel pipe to move forward along the slide rail 801, thereby achieving comprehensive polishing and grinding of the inner wall of the steel pipe. During the movement of the steel pipe, the PLC controller 3 controls the opening or merging of multiple clamping assemblies 71 according to the signal sent by the sensor 812. When the steel pipe moving mechanism 8 passes through a clamping assembly 71, the two limit clamps 714 of the clamping assembly 71 move toward each other and completely close, thereby clamping the steel pipe and improving its stability. As the steel pipe continues to move, the limit clamps 714 of the clamping assembly 71 are opened one after another so that the next clamping assembly 71 can clamp the steel pipe. Through the successive operation of multiple clamping assemblies 71, it can be ensured that the steel pipe is always stably clamped and limited during its movement, thereby improving the effect and stability of polishing and grinding. At the same time, the setting of the protective cover 5 can also effectively reduce the powder generated by the polishing and grinding of the steel pipe that flies around, protecting the safety and health of the operator.

[0027] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A steel pipe internal polishing and grinding device for steel pipe manufacturing, comprising a machine base (1), characterized in that: One end of the top of the machine base (1) is fixedly connected to the casing (2); a driving motor (11) is fixedly mounted on one side of the casing (2); an output end of the driving motor (11) is fixedly connected to a grinding stick (6) extending above the machine base (1); a front end of the grinding stick (6) is fixedly connected to a fine grinding wheel (15), an intermediate grinding wheel (14), a coarse grinding wheel (13) and a front end stick (12) in sequence; a PLC controller (3) is fixedly mounted on the front of the casing (2); and the other end of the top of the machine base (1) is fixedly connected to a limited position auxiliary mechanism (4). Two steel pipe limiting mechanisms (7) and two steel pipe moving mechanisms (8) are fixedly mounted on the top of the machine base (1) and are located between the machine housing (2) and the limiting auxiliary mechanism (4); the two steel pipe moving mechanisms (8) are located between the two steel pipe limiting mechanisms (7); the two steel pipe moving mechanisms (8) are located on both sides of the grinding rod (6); the two steel pipe limiting mechanisms (7) each include a plurality of clamping assemblies (71) and a connecting rod (72); the plurality of clamping assemblies (71) are connected in series via the connecting rod (72); and the PLC controller (3) is electrically connected to the drive motor (11).

2. The steel pipe internal polishing and grinding equipment for steel pipe manufacturing according to claim 1, characterized in that: The top cover of the machine base (1) is provided with a protective cover (5) located on one side of the machine casing (2), and the two steel pipe limiting mechanisms (7) and the two steel pipe moving mechanisms (8) are located inside the protective cover (5).

3. The steel pipe internal polishing and grinding equipment for steel pipe manufacturing according to claim 1, characterized in that: A fixing plate (10) is fixedly connected to the other side of the housing (2), a bearing (9) is fixedly mounted on the top of the fixing plate (10), and the bearing (9) is rotatably connected to the grinding rod (6).

4. The steel pipe internal polishing and grinding equipment for steel pipe manufacturing according to claim 1, characterized in that: The roughness of the surface of the fine grinding wheel (15) is smaller than the roughness of the surface of the intermediate grinding wheel (14), and the roughness of the surface of the intermediate grinding wheel (14) is smaller than the roughness of the surface of the coarse grinding wheel (13).

5. The steel pipe internal polishing and grinding equipment for steel pipe manufacturing according to claim 1, characterized in that: The position limiting auxiliary mechanism (4) comprises a second base (41), the top of the second base (41) is fixedly connected to a steel pipe position limiting seat (42), both sides of the top of the steel pipe position limiting seat (42) are fixedly connected to position limiting auxiliary plates (43), the steel pipe position limiting seat (42) is provided with a steel pipe position limiting groove (44) located between the two position limiting auxiliary plates (43), the front end rod (12) is directly opposite to the steel pipe position limiting groove (44), and the second base (41) is fixed to the top of the machine base (1).

6. The steel pipe internal polishing and grinding equipment for steel pipe manufacturing according to claim 1, characterized in that: The plurality of clamping assemblies (71) each include a base (711), a bottom plate (712), a movable seat (713) and a limiting clamp (714); the top of the base (711) is fixedly connected to the bottom of the bottom plate (712); two slide grooves (717) are provided on one side of the top of the bottom plate (712); two slide blocks (718) are slidably connected in the two slide grooves (717); the tops of the two slide blocks (718) are fixedly connected to the movable seat (713); ), one side of the movable seat (713) is fixedly connected to one side of the limit clamp (714), the other side of the top of the bottom plate (712) is fixedly connected to a mounting plate (715), one side of the mounting plate (715) is fixedly mounted with a plurality of cylinders (716), the output ends of the plurality of cylinders (716) are all fixedly connected to the other side of the movable seat (713), and the PLC controller (3) is electrically connected to the plurality of cylinders (716).

7. The steel pipe internal polishing and grinding equipment for steel pipe manufacturing according to claim 6, characterized in that: The plurality of bases one (711) are all fixedly arranged on the connecting rod (72), and the plurality of bases one (711) are all fixedly mounted on the top of the machine base (1).

8. The steel pipe internal polishing and grinding equipment for steel pipe manufacturing according to claim 1, characterized in that: The two steel pipe moving mechanisms (8) each include a transmission motor (805), a slide rail (801), a bottom plate (802), a moving seat (803) and a fixing fixture (804). A slide groove (809) is provided at the top of the slide rail (801). A screw (810) is provided in the slide groove (809). One end of the screw (810) is connected to the output end of the transmission motor (805). A slider (806) slidably connected to the slide groove (809) is threadedly connected to the screw (810). The top of the slider (806) is fixedly connected to the bottom of the bottom plate (802). Two slide grooves (802) are provided on one side of the top of the bottom plate (802). The two slide grooves (801) are slidably connected to the sliders (810). The tops of the two sliders (806) are fixedly connected to the bottom of the bottom plate (802). Two slide grooves (802) are provided on one side of the top of the bottom plate (802). The two slide grooves (801) are slidably connected to the sliders (810). It is fixedly connected to the bottom of the second movable seat (803), one side of the second movable seat (803) is fixedly connected to one side of the fixing fixture (804), the other side of the top of the second bottom plate (802) is fixedly connected to the second mounting plate (808), one side of the second mounting plate (808) is fixedly mounted with a plurality of second cylinders (807), the output ends of the plurality of second cylinders (807) are all fixedly connected to the other side of the second movable seat (803), one side of the slide rail (801) is fixedly provided with a plurality of evenly distributed mounting seats (811), the tops of the plurality of mounting seats (811) are all fixedly mounted with sensors (812), and the PLC controller (3) is electrically connected to the plurality of sensors (812), the plurality of second cylinders (807) and the two transmission motors (805).

9. The steel pipe internal polishing and grinding equipment for steel pipe manufacturing according to claim 8, characterized in that: The plurality of sensors (812) are arranged corresponding to the second bottom plate (802), and the two slide rails (801) are fixedly mounted on the top of the machine base (1).

Images