Cold rolling mill for seamless steel pipe production

Abstract

The utility model relates to the technical field of cold rolling mills, and discloses a cold rolling mill for seamless steel pipe production, which comprises a conveying device, a cold rolling device and a storage device, and a cleaning device is arranged between the conveying device and the cold rolling device; through cooperative use of the conveying device, the cold rolling device, the storage device, the cleaning box, the cleaning hole, the cleaning device, the water spraying device and the like, when the conveying device conveys a steel pipe to the cold rolling device, the steel pipe passes through the cleaning hole of the cleaning box, and at the moment, the water spraying device located in the cleaning hole sprays a water source to the surface of the steel pipe; in the two same cleaning devices, the cleaning device on the front side rotates along the surface of the steel pipe to wipe away impurities, then the water spraying device sprays the water source to the surface of the steel plate again, and the same cleaning device on the rear side rotates along the surface to adsorb and wipe away stains left during first-time cleaning, so that the cleaning quality is improved; and a subsequent cold rolling device can conveniently conduct cold rolling treatment on the steel pipe, and then the production quality of the cold-rolled steel pipe is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cold rolling mills, in particular to a cold rolling mill for producing seamless steel pipes. Background Art

[0002] Seamless steel pipe is made by perforating a whole round steel and has no welds on the surface. The inner and outer surfaces of the seamless steel pipe are smooth, can withstand high pressure and high strength, and have good corrosion resistance. In the processing of seamless steel pipes, cold rolling mill is one of the important processing equipment, which is used to further improve the precision and surface quality of seamless steel pipes.

[0003] At present, the patent with announcement number CN213968331U discloses a high-speed cold rolling mill, and its technical solution is: a high-speed cold rolling mill, including a machine body, a cold rolling device arranged on the machine body, a conveying device and a storage device, the conveying device includes a conveying guide rail arranged at the feed end of the cold rolling device, and the end of the conveying guide rail away from the cold rolling device is provided with a positioning rod for inserting into the steel pipe, and the storage device includes a storage tray arranged on one side of the conveying guide rail, and the end of the placing tray close to the cold rolling device is flush with the feed port of the cold rolling device, and the side of the placing tray close to the conveying guide rail is provided with a feeding roller along the length direction of the conveying guide rail, and the feeding roller is provided with a plurality of feeding plates along the length direction, and the plurality of feeding plates are evenly arranged along the circumferential direction of the feeding roller. The above device has the effect of improving production efficiency, reducing labor costs, and accelerating production progress.

[0004] But the following problems still exist:

[0005] However, the above device does not clean the impurities and dust on the surface of the steel pipe before the cold rolling of the steel pipe. When the steel pipe is cold rolled, the dust will be mixed with the steel pipe, thereby affecting the quality of the cold rolling of the steel pipe, causing serious impact on the processing and production of the steel pipe, resulting in poor use of the steel pipe, thereby reducing practicality. Utility Model Content

[0006] The utility model aims to provide a cold rolling machine for seamless steel pipe production, which cleans the surface of the steel pipe between cold rolling processes, so that no dust or impurities will appear on the surface of the steel pipe during the cold rolling process, thereby improving the quality of the cold rolling process of the steel pipe.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A cold rolling mill for producing seamless steel pipes comprises a conveying device, a cold rolling device and a storage device. A cleaning device is provided between the conveying device and the cold rolling device, and the cleaning device comprises a cleaning box. A cleaning hole is provided on the side wall of the cleaning box located on the discharge port side of the conveying device, and two identical cleaning devices are provided inside the cleaning hole, and a water spray device is provided on one side of the cleaning device.

[0009] Preferably, the cleaning device includes two annular rotating grooves opened inside the cleaning hole, and the inner walls of the annular rotating grooves are rotatably connected to a rotating gear ring, two clamping cleaning half rings are provided below the rotating gear ring, and the inner walls of the clamping cleaning half rings are fixedly connected to a scouring pad, a movable connection device is provided between the clamping cleaning half rings and the rotating gear ring, and a gear groove is opened on the side wall of the cleaning box located above the rotating gear ring, a driving gear is provided inside the gear groove, and the driving gear is meshed with the rotating gear ring, a driving motor is provided on one side of the cleaning box, and the output end of the driving motor is fixedly connected to a driving shaft, and one end of the driving shaft passes through the side wall of the driving gear and is fixedly connected to the driving gear.

[0010] Preferably, the movable connection device includes a T-shaped connecting rod which is fixedly connected to the side wall of the clamping cleaning semi-ring, and a limiting spring groove is provided on the side wall of the rotating gear ring above the T-shaped connecting rod, the side wall of the T-shaped connecting rod is slidingly connected to the inner wall of the limiting spring groove, and one end of the T-shaped connecting rod located inside the limiting spring groove is fixedly connected to the limiting spring, and the other end of the limiting spring is fixedly connected to the inner wall of the limiting spring groove.

[0011] Preferably, the cleaning device includes a water tank arranged on one side of the cleaning box, and a water pump is provided above the water tank, the water inlet of the water pump is connected to a water inlet pipe, and one end of the water inlet pipe extends to the interior of the water tank, the water outlet of the water pump is connected to a water outlet pipe, and a first water spray ring is fixedly connected to the side wall of the cleaning hole located on one side of the conveying device, a second water spray ring is fixedly connected to the inner wall of the cleaning hole located between the two adjacent cleaning devices, and the first water spray ring and the second water spray ring are connected to the water outlet pipe, and an inclined groove is provided on the bottom surface of the cleaning hole below the first water spray ring and the second water spray ring, and the inclined groove is connected to the water tank.

[0012] Preferably, a filter plate is provided on one side of the water tank below the inclined groove, and one end of the filter plate penetrates through the side wall of the water tank and is slidably connected to the side wall of the water tank.

[0013] Preferably, one end of the clamping and cleaning half ring located on one side of the discharge hole of the conveying device is fixedly connected with a bevel half ring.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model cooperates with the transmission device, the cold rolling device, the storage device, the cleaning box, the cleaning hole, the cleaning device and the water spraying device by arranging them. When the transmission device transmits the steel pipe to the cold rolling device, it will pass through the cleaning hole of the cleaning box. At this time, the water spraying device located in the cleaning hole will spray water onto the surface of the steel pipe. After that, the cleaning device on the front side of the two identical cleaning devices rotates along the surface of the steel pipe to wipe off impurities. After that, the water spraying device will spray water onto the surface of the steel plate again, and the identical cleaning device on the rear side will rotate along the surface to absorb and wipe, wipe and clean the stains remaining during the first cleaning, thereby improving the cleaning quality, facilitating the subsequent cold rolling device to cold-roll the steel pipe, and then improving the production quality of the cold-rolled steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a cold rolling mill for producing seamless steel pipes proposed by the utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of a cleaning device in a cold rolling mill for producing seamless steel pipes proposed by the utility model;

[0018] Figure 3 This is a schematic diagram of the front cross-sectional structure of a cold rolling mill cleaning device for seamless steel pipe production proposed by the utility model;

[0019] Figure 4 for Figure 3 The enlarged structural diagram at A in the middle;

[0020] Figure 5 This is a left-side cross-sectional structural schematic diagram of a cold rolling mill cleaning device for seamless steel pipe production proposed by the utility model;

[0021] Figure 6 for Figure 5 The enlarged structural diagram at B in the middle;

[0022] Figure 7 The utility model is a schematic diagram of a top cross-sectional structure of a cold rolling mill cleaning device for seamless steel pipe production.

[0023] In the figure: 1. conveying device; 2. cold rolling device; 3. storage device; 4. cleaning device; 5. cleaning box; 6. cleaning hole; 7. annular rotating groove; 8. rotating gear ring; 9. clamping cleaning half ring; 10. scouring pad; 11. T-shaped connecting rod; 12. limit spring; 13. limit spring groove; 14. gear groove; 15. driving gear; 16. driving motor; 17. driving shaft; 18. water tank; 19. water pump; 20. water inlet pipe; 21. water outlet pipe; 22. first water spray ring; 23. second water spray ring; 24. inclined groove; 25. filter plate; 26. inclined half ring. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] See also Figure 1-7 A cold rolling mill for producing seamless steel pipes, comprising a conveying device 1, a cold rolling device 2 and a storage device 3 (the conveying device 1, the cold rolling device 2 and the storage device 3 are the structures in the comparative document of application No. 202022812601.6, and will not be described in detail here), a cleaning device 4 is provided between the conveying device 1 and the cold rolling device 2, and the cleaning device 4 includes a cleaning box 5, a cleaning hole 6 is provided on the side wall of the cleaning box 5 located on the discharge port side of the conveying device 1, and two identical cleaning devices are provided inside the cleaning hole 6, and a water spray device is provided on one side of the cleaning device.

[0026] It can be seen from the above structure that; by setting up a conveying device 1, a cold rolling device 2, a storage device 3, a cleaning box 5, a cleaning hole 6, a cleaning device and a water spraying device, etc. for coordinated use, when the conveying device 1 conveys the steel pipe to the cold rolling device 2, it will pass through the cleaning hole 6 of the cleaning box 5. At this time, the water spraying device located in the cleaning hole 6 will spray water onto the surface of the steel pipe. After that, the cleaning device on the front side of the two identical cleaning devices rotates along the surface of the steel pipe to wipe off impurities. After that, the water spraying device will spray water onto the surface of the steel plate again, and the same cleaning device on the rear side will rotate along the surface to absorb and wipe, wiping and cleaning the stains remaining during the first cleaning, thereby improving the cleaning quality, facilitating the subsequent cold rolling device 2 to cold roll the steel pipe, and then improving the production quality of the cold-rolled steel pipe.

[0027] Furthermore, the cleaning device includes two annular rotating grooves 7 opened inside the cleaning hole 6, and the inner wall of the annular rotating groove 7 is rotatably connected to a rotating gear ring 8, two clamping cleaning semi-rings 9 are arranged below the rotating gear ring 8, and the inner wall of the clamping cleaning semi-ring 9 is fixedly connected to a scouring pad 10, a movable connection device is arranged between the clamping cleaning semi-ring 9 and the rotating gear ring 8, and a gear groove 14 is opened on the side wall of the cleaning box 5 located above the rotating gear ring 8, a driving gear 15 is arranged inside the gear groove 14, and the driving gear 15 is meshed with the rotating gear ring 8, and a driving gear 15 is arranged on one side of the cleaning box 5. The drive motor 16 is provided, and the output end of the drive motor 16 is fixedly connected to the drive shaft 17, one end of the drive shaft 17 passes through the side wall of the drive gear 15 and is fixedly connected to the drive gear 15; by setting the annular rotating groove 7, the rotating gear ring 8, the clamping cleaning half ring 9, the scouring pad 10, the movable connecting device, the gear groove 14, the drive gear 15, the drive motor 16, and the drive shaft 17, when the steel pipe passes through the cleaning hole 6, the steel pipe will first be wetted by the water spray device, and then the wetted steel pipe will enter the front cleaning device, and the movable connecting device in the front cleaning device will push the two clamping cleaning devices. The cleaning half rings 9 are close to each other, and then the two scouring pads 10 fixedly connected to the inner walls of the two clamping cleaning half rings 9 will fit with the surface of the steel pipe, and then clamp the steel pipe, and the movable connection device can flexibly adjust the clamping size of the clamping cleaning half rings 9 according to steel pipes of different sizes, and at the same time connect the clamping cleaning half rings 9 and the rotating gear ring 8, thereby improving the practicality of the above-mentioned device, and when the steel pipe passes through the cleaning hole 6, the driving motor 16 will start, driving the driving shaft 17 fixedly connected to the output end of the driving motor 16 to rotate, and the driving gear 15 fixedly connected to the outer wall of the driving shaft 17 will rotate at the same time, thereby driving The gear 15 will drive the rotating gear ring 8 meshing with the driving gear 15 to rotate, and then the rotating gear ring 8 will drive the clamping cleaning half ring 9 and the scouring pad 10 connected to the movable connection device to rotate along the surface of the steel pipe, and then rotate and wipe the dust and impurities remaining on the surface of the steel pipe. After that, the steel pipe that has slipped out will be wetted by the water spray device again, and the clamping cleaning half ring 9 and the scouring pad 10 in the cleaning device on the rear side will rotate and wipe along the surface of the steel pipe, and then wipe off the cleaning residual stains remaining on the surface of the steel pipe after cleaning by the front cleaning device, thereby improving the cleaning efficiency of the cleaning device and improving the cleanliness of the steel pipe surface.

[0028] Furthermore, the movable connection device includes a T-shaped connecting rod 11 fixedly connected to the side wall of the clamping cleaning semi-ring 9, and a limit spring groove 13 is provided on the side wall of the rotating gear ring 8 above the T-shaped connecting rod 11, the side wall of the T-shaped connecting rod 11 is slidably connected to the inner wall of the limit spring groove 13, and one end of the T-shaped connecting rod 11 located inside the limit spring groove 13 is fixedly connected to the limit spring 12, and the other end of the limit spring 12 is fixedly connected to the inner wall of the limit spring groove 13; by setting the T-shaped connecting rod 11, the limit spring groove 13 and the limit spring 12 for coordinated use, according to the size of different steel pipes, when the clamping cleaning semi-ring 9 clamps the steel pipe The clamping cleaning half ring 9 pushes the T-shaped connecting rod 11 to squeeze the limit spring 12 to slide along the limit spring groove 13, and the limit spring 12 will push the T-shaped connecting rod 11, so that the clamping cleaning half ring 9 pushes the scouring pad 10 to always be against the surface of the steel pipe. Then, when the driving motor 16 rotates, the driving shaft 17, the driving gear 15 and the rotating gear ring 8 are used in coordination to make the rotating gear ring 8 rotate, and the T-shaped connecting rod 11 that is slidably connected to the limit spring groove 13 opened on the side wall of the rotating gear ring 8 will rotate together, thereby driving the clamping cleaning half ring 9 and the scouring pad 10 to rotate along the surface of the steel pipe, and then wipe the dust and impurities on the surface of the steel pipe.

[0029] Furthermore, the cleaning device includes a water tank 18 arranged on one side of the cleaning box 5, and a water pump 19 is arranged above the water tank 18, the water inlet of the water pump 19 is connected to the water inlet pipe 20, and one end of the water inlet pipe 20 extends into the interior of the water tank 18, the water outlet of the water pump 19 is connected to the water outlet pipe 21, and the side wall of the cleaning hole 6 located on one side of the conveying device 1 is fixedly connected to the first water spray ring 22, the inner wall of the cleaning hole 6 located between the two adjacent cleaning devices is fixedly connected to the second water spray ring 23, and the first water spray ring 22 and the second water spray ring 23 are connected to the water outlet pipe 21, and the bottom surface of the cleaning hole 6 located below the first water spray ring 22 and the second water spray ring 23 is provided with an inclined groove 24, and the inclined groove 24 is connected to the water tank 18; by arranging the water tank 18, the water pump 19, the water inlet pipe 2 0, the water outlet pipe 21, the first water spray ring 22, the second water spray ring 23 and the inclined groove 24 are used in combination. When the steel pipe enters the cleaning hole 6, the started water pump 19 will absorb the water in the water tank 18 through the water inlet pipe 20 and the water outlet pipe 21, and then spray it out by the first water spray ring 22 and the second water spray ring 23. After the steel pipe passes through the first water spray ring 22, the wetted steel pipe will facilitate the cleaning work of the cleaning device on the front side. After the steel pipe passes through the cleaning device on the front side, it will be wetted by the second water spray ring 23, which will facilitate the cleaning device on the rear side to clean the cleaning stains remaining on the surface of the steel pipe by the cleaning device on the front side, thereby improving the cleaning efficiency. The water sprayed to the steel pipe by the first water spray ring 22 and the second water spray ring 23 will then drip into the inclined groove 24, and then flow into the water tank 18 for convenient recycling.

[0030] Furthermore, a filter plate 25 is provided on one side of the water tank 18 below the inclined groove 24, and one end of the filter plate 25 passes through the side wall of the water tank 18 and is slidably connected to the side wall of the water tank 18; by providing the filter plate 25, impurities in the water flow that slides into the water tank 18 from the inclined groove 24 are filtered, making it convenient to recycle the cleaning water.

[0031] Furthermore, one end of the clamping cleaning semi-ring 9 located on one side of the discharge hole of the conveying device 1 is fixedly connected with a bevel semi-ring 26; the setting of the bevel semi-ring 26 enables the steel pipe sliding into one side of the clamping cleaning semi-ring 9 to slide along the bevel of the bevel semi-ring 26, thereby pushing the two clamping cleaning semi-rings 9 to automatically push the T-shaped connecting rod 11 to squeeze the limit spring 12 and open it, making it convenient for the clamping cleaning semi-ring 9 to clamp the steel pipe.

[0032] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A cold rolling mill for producing seamless steel pipes, comprising a conveying device (1), a cold rolling device (2) and a storage device (3), characterized in that: A cleaning device (4) is provided between the conveying device (1) and the cold rolling device (2), and the cleaning device (4) comprises a cleaning box (5), a cleaning hole (6) is provided on the side wall of the cleaning box (5) located on the discharge port side of the conveying device (1), and two identical cleaning devices are provided inside the cleaning hole (6), and a water spray device is provided on one side of the cleaning device.

2. A cold rolling mill for producing seamless steel pipes according to claim 1, characterized in that: The cleaning device comprises two annular rotating grooves (7) provided inside the cleaning hole (6), and the inner wall of the annular rotating groove (7) is rotatably connected to a rotating gear ring (8), two clamping cleaning half rings (9) are provided below the rotating gear ring (8), and the inner wall of the clamping cleaning half ring (9) is fixedly connected to a scouring pad (10), a movable connection device is provided between the clamping cleaning half ring (9) and the rotating gear ring (8), and a gear groove (14) is provided on the side wall of the cleaning box (5) located above the rotating gear ring (8), a driving gear (15) is provided inside the gear groove (14), and the driving gear (15) is meshed with the rotating gear ring (8), a driving motor (16) is provided on one side of the cleaning box (5), and the output end of the driving motor (16) is fixedly connected to a driving shaft (17), and one end of the driving shaft (17) passes through the side wall of the driving gear (15) and is fixedly connected to the driving gear (15).

3. A cold rolling mill for producing seamless steel pipes according to claim 2, characterized in that: The movable connection device comprises a T-shaped connecting rod (11) fixedly connected to the side wall of the clamping cleaning half ring (9), and a limit spring groove (13) is provided on the side wall of the rotating gear ring (8) located above the T-shaped connecting rod (11), the side wall of the T-shaped connecting rod (11) is slidably connected to the inner wall of the limit spring groove (13), and one end of the T-shaped connecting rod (11) located inside the limit spring groove (13) is fixedly connected to the limit spring (12), and the other end of the limit spring (12) is fixedly connected to the inner wall of the limit spring groove (13).

4. A cold rolling mill for producing seamless steel pipes according to claim 1 or 2, characterized in that: The cleaning device comprises a water tank (18) arranged on one side of the cleaning box (5), and a water pump (19) is arranged above the water tank (18), a water inlet of the water pump (19) is connected to a water inlet pipe (20), and one end of the water inlet pipe (20) extends into the interior of the water tank (18), a water outlet of the water pump (19) is connected to a water outlet pipe (21), and a first water spray ring (22) is fixedly connected to the side wall of the cleaning hole (6) located on one side of the conveying device (1), a second water spray ring (23) is fixedly connected to the inner wall of the cleaning hole (6) located between two adjacent cleaning devices, and the first water spray ring (22) and the second water spray ring (23) are connected to the water outlet pipe (21), and an inclined groove (24) is provided on the bottom surface of the cleaning hole (6) located below the first water spray ring (22) and the second water spray ring (23), and the inclined groove (24) is connected to the water tank (18).

5. A cold rolling mill for producing seamless steel pipes according to claim 4, characterized in that: A filter plate (25) is provided on one side of the water tank (18) below the inclined groove (24), and one end of the filter plate (25) penetrates the side wall of the water tank (18) and is slidably connected to the side wall of the water tank (18).

6. A cold rolling mill for producing seamless steel pipes according to claim 1 or 2, characterized in that: One end of the clamping cleaning half ring (9) located on one side of the discharge hole of the conveying device (1) is fixedly connected to a bevel half ring (26).

7. A cold rolling mill for producing seamless steel pipes according to claim 3, characterized in that: One end of the clamping cleaning half ring (9) located on one side of the discharge hole of the conveying device (1) is fixedly connected to a bevel half ring (26).

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