Steel coil slitting device for steel pipe production and steel pipe

Abstract

The invention relates to the technical field of steel pipe production, and discloses a steel coil slitting device for steel pipe production and a steel pipe. The steel coil slitting device comprises a machine base, a first mounting plate is fixed to the machine base, a first moving block is slidably connected to the first mounting plate, and a first cutter shaft is rotatably connected to the first mounting plate; the first moving block is rotationally connected with a second cutter shaft, the first cutter shaft and the second cutter shaft are each provided with a plurality of blades, and the first moving block and the first mounting plate are each provided with a plurality of movable cleaning bases; scrap iron attached to the surface of the blade can be brushed away through the brush plate, lubricating oil and tiny chippings attached to the surface of the blade can be wiped away through the L-shaped sponge block, the situation that abrasion to the blade is accelerated by the scrap iron or a cutting edge is cracked is prevented, the service life of the blade is prolonged, meanwhile, the lubricating oil can be prevented from polluting a steel bar, and the service life of the blade is prolonged. Therefore, the slitting quality of the steel coil is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel pipe production, in particular to a steel coil slitting device for steel pipe production and a steel pipe. BACKGROUND

[0002] During steel pipe production, the steel coil slitting device is used to cut the steel coil into multiple steel strips of consistent size. In order to avoid unevenness of the steel strips, a flattening machine is used to perform flattening treatment on the steel strips to eliminate stress and deformation generated during rolling and coiling of the steel strips, so that the steel strips reach a suitable flatness. The flattened steel strips are fed into a forming machine, which gradually bends the steel strips into a pipe blank in a circular or other desired shape through a series of dies and rollers. After the pipe blank is formed, the joint is welded. The steel pipe after welding may have a pipe diameter deviation and a non-straight condition. A sizing machine is used to accurately control the outer diameter of the steel pipe to make it meet the standard size. A straightening machine is used to straighten the steel pipe to ensure the straightness of the steel pipe.

[0003] At present, during operation of the blade of the steel coil slitting device, in order to reduce friction and improve slitting effect, lubricating oil is continuously sprayed on the blade. However, long-term spraying of the lubricating oil will cause a part of the lubricating oil to fall onto the steel strip, resulting in pollution, and another part of the lubricating oil to adhere to the surface of the blade, which is prone to mix with iron filings. Since the iron filings are hard, it will cause the blade edge to crack or accelerate the wear rate of the blade, thereby reducing the service life of the blade and affecting the slitting quality. SUMMARY

[0004] The present application provides a steel coil slitting device for steel pipe production and a steel pipe, which has the beneficial effect of brushing off the iron filings adhering to the surface of the blade through the brush plate, wiping clean the lubricating oil and small debris adhering to the surface of the blade through the L-shaped sponge block, preventing the iron filings from accelerating the wear of the blade or causing the blade edge to crack, prolonging the service life of the blade, and avoiding pollution of the steel strip by the lubricating oil, thereby improving the quality of steel coil slitting. The present application solves the problem of long-term spraying of lubricating oil, which causes a part of the lubricating oil to fall onto the steel strip, resulting in pollution, and another part of the lubricating oil to adhere to the surface of the blade, which is prone to mix with iron filings. Since the iron filings are hard, it will cause the blade edge to crack or accelerate the wear rate of the blade, thereby reducing the service life of the blade and affecting the slitting quality.

[0005] The present application provides the following technical solution: a steel coil slitting device for steel pipe production, comprising a machine base, a first mounting plate fixed on the machine base, a first moving block slidingly connected to the first mounting plate, a first blade shaft rotatably connected to the first mounting plate, a second blade shaft rotatably connected to the first moving block, a plurality of blades mounted on the first blade shaft and the second blade shaft, and a plurality of movable cleaning seats provided on the first moving block and the first mounting plate.

[0006] The first abutting head is internally abutted with the first moving support, the brush plate and the L-shaped sponge block are respectively connected on the first moving support, the L-shaped sponge block is rotationally connected with the blanking plate, the first extrusion plate is movably arranged in the cleaning seat, and the strip-shaped rod is slidably connected on the cleaning seat.

[0007] As an optional scheme of the steel coil slitting device for steel pipe production, the first guide rod is fixed on the cleaning seat, the first moving support is elastically connected with the first guide rod through the first spring, the end of the first abutting head is rotationally connected with the ball, the second guide rod is fixed on the first moving support, the brush plate is elastically connected with the second guide rod through the second spring, the first torsion spring is connected between the blanking plate and the L-shaped sponge block, and the first abutting rod is fixed on one end of the brush plate.

[0008] As an optional scheme of the steel coil slitting device for steel pipe production, the extension plate is slidably connected on the blanking plate, the third spring is connected between the extension plate and the blanking plate, the second extrusion plate is fixed on the blanking plate, the second extrusion plate is in surface contact with the L-shaped sponge block, the second sliding support is fixed on the first moving block and the first mounting plate, the sliding block is fixed on the cleaning seat, and the fourth spring is elastically connected between the two sliding blocks and the two second sliding supports.

[0009] As an optional scheme of the steel coil slitting device for steel pipe production, the first electric push rod is fixed on the first mounting plate, the first abutting strip is fixed on the piston rod of the first electric push rod, the first abutting wedge block is fixed on the two sliding blocks, and the first abutting strip is in abutment with the first abutting wedge block.

[0010] As an optional scheme of the steel coil slitting device for steel pipe production, the second mounting plate is slidably connected on one end of the base, the second electric push rod for adjusting the moving position of the second mounting plate is fixed on the base, the second moving block is slidably connected on the second mounting plate, the limiting groove is arranged on the second mounting plate and the second moving block, the lead screw elevator is fixed on the upper end of the first mounting plate and the second mounting plate, and the moving ends of the two lead screw elevators are respectively fixedly connected with the first moving block and the second moving block.

[0011] As an optional scheme of the steel coil slitting device for steel pipe production, the first extrusion plate is fixed with a third guide rod, the third guide rod is elastically connected with the cleaning seat through a fifth spring, and the first extrusion plate is provided with a second abutting head above.

[0012] As an optional scheme of the steel coil slitting device for steel pipe production, one end of the strip-shaped rod is fixed with a second abutting wedge, a sixth spring is connected between the second abutting wedge and the cleaning seat, a plurality of third abutting strips are fixed on the first cutter shaft and the second cutter shaft, and a third abutting head is fixed on the strip-shaped rod.

[0013] As an optional scheme of the steel coil slitting device for steel pipe production, the cleaning seat is rotatably connected with a shaft rod, the lower end of the shaft rod is fixed with a spray head, a second torsional spring is connected between the shaft rod and the cleaning seat, the upper end of the shaft rod is respectively fixed with a rubber scraper and a fourth abutting strip, and a collecting box is fixed below the cleaning seat.

[0014] As an optional scheme of the steel coil slitting device for steel pipe production, the cleaning seat is fixed with a third sliding frame, the fourth abutting strip is abutted with an abutting support, the abutting support is slidingly connected on the third sliding frame, and a third abutting wedge is fixed on the strip-shaped rod.

[0015] A steel pipe, comprising a steel pipe, which is prepared by the steel coil slitting device for steel pipe production.

[0016] The present application has the following advantages:

[0017] 1. In the steel coil slitting device for steel pipe production, the first moving block slidingly connected on the first mounting plate can adjust the distance between the second cutter shaft and the first cutter shaft, the cooperation of the first electric push rod and the first abutting strip can adjust the position of the sliding block on the second sliding support, so that the cleaning seats can automatically approach the blades for cleaning when working, the cooperation of the first abutting head and the first moving support can automatically abut the brush plate and the L-shaped sponge block on the surface of the blades during the process of the cleaning seats approaching the blades, the iron filings attached to the surface of the blades can be brushed off by the brush plate, the lubricating oil and small debris attached to the surface of the blades can be wiped clean by the L-shaped sponge block, so as to prevent the iron filings from accelerating the wear of the blades or the cracking of the blade edge, prolong the service life of the blades, avoid the pollution of the lubricating oil to the steel strip, improve the quality of the steel coil slitting, and guide the iron filings brushed off by the brush plate through the blanking plate, so that the iron filings can slide into the cleaning seat, and the extension plate slidingly connected on the blanking plate can reduce the gap between the blade and the extension plate, and improve the effect of iron filings blanking.

[0018] Through the second mounting plate and the limiting slot opened on the second moving block, the end of the first cutter shaft and the second cutter shaft can be inserted, which plays a supporting role, thereby improving the stability of the blade during work.

[0019] 2、The steel coil cutting device for steel pipe production, through the first cutter shaft and the second cutter shaft, a plurality of third contact strips are installed, which can intermittently contact with the second contact wedge on the strip-shaped rod during rotation, thereby promoting the third contact head on the strip-shaped rod to reciprocally contact with the first contact rod, driving the first contact rod to drive the brush plate to reciprocally move up and down along the surface of the blade, thereby effectively removing stubborn stains on the surface of the blade and improving the cleaning effect.

[0020] At the same time, the downward movement of the brush plate pushes the discharge plate to deflect downward, thereby driving the second extrusion plate to deflect and automatically extruding the L-shaped sponge block, and the second contact head fixed on the first contact rod contacts with the first extrusion plate, promoting the first extrusion plate to automatically extrude the lower end of the L-shaped sponge block, so that the lubricating oil in the L-shaped sponge block is automatically discharged, thereby improving the lubricating oil adsorption effect of the L-shaped sponge block on the blade and reducing the pollution caused by the lubricating oil scattered on the surface of the steel strip.

[0021] 3、The steel coil cutting device for steel pipe production, through the nozzle, the cleaned surface of the blade can be sprayed with lubricating oil again to reduce the friction between the blade and the steel coil, and the fourth contact strip on the shaft rod can contact with the third sliding frame, promoting the shaft rod to automatically deflect, on the one hand, the shaft rod drives the nozzle to rotate, which can improve the spraying range and effect of the lubricating oil, on the other hand, the shaft rod can drive the rubber scraper to deflect synchronously, which can scrape the iron filings and lubricating oil at the bottom of the cleaning seat into the collection box in time to prevent the iron filings and lubricating oil from accumulating in the cleaning seat. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is one of the schematic diagrams of the three-dimensional structure of the present application.

[0023] Figure 2 It is the second schematic diagram of the three-dimensional structure of the present application.

[0024] Figure 3 It is a schematic diagram of the structure of the second contact wedge and the third contact strip of the present application.

[0025] Figure 4 It is one of the schematic diagrams of the cleaning seat structure of the present application.

[0026] Figure 5 It is the second schematic diagram of the cleaning seat structure of the present application.

[0027] Figure 6 It is a schematic diagram of the first extrusion plate structure of the present application.

[0028] Figure 7 The schematic diagram of the resisting support structure of the present application.

[0029] Figure 8 The structure sectional view of the cleaning seat of the present application.

[0030] Figure 9 The Figure 7 The enlarged view at A in the middle.

[0031] In the figure: 1, machine base; 2, first mounting plate; 3, first moving block; 4, first cutter shaft; 5, second cutter shaft; 6, blade; 7, cleaning seat; 8, first resisting head; 9, first moving support; 10, brush plate; 11, L-shaped sponge block; 12, blanking plate; 13, first extrusion plate; 14, strip-shaped rod; 15, first guide rod; 16, first spring; 17, ball bearing; 18, second guide rod; 19, second spring; 20, first torsion spring; 21, extension plate; 22, third spring; 23, second extrusion plate; 24, first resisting rod; 241, second sliding support; 25, sliding block; 26, fourth spring; 27, first electric push rod; 28, first resisting strip; 29, first resisting wedge block; 30, second mounting plate; 31, second electric push rod; 32, second moving block; 33, limiting groove; 34, screw rod lifter; 35, third guide rod; 36, fifth spring; 37, second resisting head; 38, second resisting wedge block; 39, sixth spring; 40, third resisting strip; 41, third resisting head; 42, shaft rod; 43, spray head; 44, second torsion spring; 45, rubber scraper; 46, fourth resisting strip; 47, third sliding support; 48, resisting support; 49, third resisting wedge block; 50, collecting box. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0033] Embodiment one, please refer to Figures 1 to 9 A steel coil slitting device for steel pipe production, comprising a machine base 1, the machine base 1 is fixed with a first mounting plate 2, the first mounting plate 2 is slidingly connected with a first moving block 3, the first mounting plate 2 is rotationally connected with a first cutter shaft 4, the first moving block 3 is rotationally connected with a second cutter shaft 5, the first cutter shaft 4 and the second cutter shaft 5 are both provided with a plurality of blades 6, and the first moving block 3 and the first mounting plate 2 are both provided with a plurality of movable cleaning seats 7.

[0034] The first contact head 8 is arranged on both sides of the cleaning seat 7, the first moving support 9 is arranged in the first contact head 8, the brush plate 10 and the L-shaped sponge block 11 are respectively connected to the first moving support 9, the discharging plate 12 is rotatably connected to the L-shaped sponge block 11, the first extrusion plate 13 is movably arranged in the cleaning seat 7, and the strip-shaped rod 14 is slidably connected to the cleaning seat 7.

[0035] The first guide rod 15 is fixed to the cleaning seat 7, the first moving support 9 is elastically connected to the first guide rod 15 through the first spring 16, the end of the first contact head 8 is rotatably connected to the ball 17, the second guide rod 18 is fixed to the first moving support 9, the brush plate 10 is elastically connected to the second guide rod 18 through the second spring 19, the first torsion spring 20 is connected between the discharging plate 12 and the L-shaped sponge block 11, and one end of the brush plate 10 is fixed to the first contact rod 24.

[0036] The extension plate 21 is slidably connected to the discharging plate 12, the third spring 22 is connected between the extension plate 21 and the discharging plate 12, the second extrusion plate 23 is fixed to the discharging plate 12, the second extrusion plate 23 is in surface contact with the L-shaped sponge block 11, the second sliding support 241 is fixed to the first moving block 3 and the first mounting plate 2, the sliding block 25 is fixed to each of the two cleaning seats 7, and the fourth spring 26 is elastically connected between the two second sliding supports 241 and the two sliding blocks 25.

[0037] The first electric push rod 27 is fixed to the first mounting plate 2, the first contact strip 28 is fixed to the piston rod of the first electric push rod 27, the first contact wedge block 29 is fixed to each of the two sliding blocks 25, and the first contact strip 28 is in contact with the first contact wedge block 29.

[0038] The second mounting plate 30 is slidably connected to one end of the base 1, the second electric push rod 31 for adjusting the moving position of the second mounting plate 30 is fixed to the base 1, the second moving block 32 is slidably connected to the second mounting plate 30, the limiting groove 33 is arranged in the second mounting plate 30 and the second moving block 32, the lead screw lifter 34 is fixed to the upper end of the first mounting plate 2 and the second mounting plate 30, and the moving ends of the two lead screw lifters 34 are respectively fixedly connected to the first moving block 3 and the second moving block 32.

[0039] Reference Figures 1 to 8, the uncoiled steel coil is conveyed between the first cutter shaft 4 and the second cutter shaft 5, the piston rod of the second electric push rod 31 is extended to drive the second mounting plate 30 to move on the base 1, the second moving block 32 is inserted into the end of the first cutter shaft 4 and the second cutter shaft 5 through the limiting slot 33 on the second mounting plate 30, and the first cutter shaft 4 and the second cutter shaft 5 are supported, so that the stability of the blade 6 during work is improved, the first mounting plate 2 and the second mounting plate 30 are lifted through the screw lifter 34, the screw lifter 34 is driven by a motor to rotate the internal worm, the rotation is reduced through the worm and gear transmission, the worm is threadedly connected with the screw rod, the rotation is converted into axial linear motion, the screw rod is rotated and moved in the axial direction, the height of the second moving block 32 and the first moving block 3 is adjusted, and the purpose of adjusting the cutting height of the blade 6 on the first cutter shaft 4 and the second cutter shaft 5 is achieved, wherein the second cutter shaft 5 and the first cutter shaft 4 are both powered by a servo motor, the blade 6 on the first cutter shaft 4 and the second cutter shaft 5 is driven to rotate, and the steel coil is cut into a plurality of steel strips for processing steel pipes;

[0040] During the cutting of the steel coil, the piston rod of the first electric push rod 27 drives the first contact strip 28 to move horizontally, and the two first contact wedges 29 are contacted, so that the two sliding blocks 25 move horizontally on the two second sliding supports 241, and the fourth spring 26 is energized, so that the purpose that the plurality of cleaning seats 7 automatically approach the blade 6 is achieved, the plurality of cleaning seats 7 drive the first contact head 8 to contact the first cutter shaft 4 and the second cutter shaft 5 during movement, so that the first contact head 8 slides in the cleaning seat 7 and contacts the first moving support 9, the first moving support 9 is driven to slide on the first guide rod 15, the first spring 16 is energized, so that the first moving support 9 drives the L-shaped sponge block 11 and the brush plate 10 to automatically contact the surface of the blade 6, during the rotation of the blade 6, the iron filings attached to the surface of the blade 6 can be brushed off through the brush plate 10, the lubricating oil and small debris attached to the surface of the blade can be wiped clean through the L-shaped sponge block 11, so as to prevent the iron filings from accelerating the wear of the blade 6 or the cracking of the blade edge, prolong the service life of the blade 6, and avoid the pollution of the lubricating oil to the steel strip, so as to improve the quality of the cutting of the steel coil, wherein the blanking plate 12 moves synchronously with the L-shaped sponge block 11, the iron filings brushed off by the brush plate 10 can be guided through the blanking plate 12, so as to conveniently slide into the cleaning seat 7, so as to prevent the iron filings from falling onto the L-shaped sponge block 11 and contacting the surface of the blade 6, and reduce the wear of the surface of the blade 6;

[0041] The end of the first contact head 8 is rotatably connected with the ball 17, so as to reduce the wear caused by the contact between the first contact head 8 and the first cutter shaft 4 and the second cutter shaft 5.

[0042] In the embodiment, the first cutter shaft 4 and the second cutter shaft 5 are both powered by a servo motor, the blade 6 on the first cutter shaft 4 and the second cutter shaft 5 is driven to rotate, and the steel coil is cut into a plurality of steel strips for processing steel pipes. Figures 1 to 9The first extrusion plate 13 is fixed with a third guide rod 35, which is elastically connected with the cleaning seat 7 through a fifth spring 36. The upper portion of the first extrusion plate 13 is provided with a second contact head 37, which is fixed on the first contact rod 24.

[0043] One end of the strip-shaped rod 14 is fixed with a second contact wedge 38, which is connected with the cleaning seat 7 through a sixth spring 39. The first cutter shaft 4 and the second cutter shaft 5 are both fixed with a plurality of third contact strips 40. The strip-shaped rod 14 is fixed with a third contact head 41.

[0044] Reference 3 to Figure 9 The L-shaped sponge block 11 has good adsorption performance. When the adsorbed amount of lubricating oil is large, the adsorption effect will be reduced, and the L-shaped sponge block 11 needs to be extruded to squeeze out the adsorbed lubricating oil, so as to guarantee the adsorption effect. When the first cutter shaft 4 and the second cutter shaft 5 rotate, the plurality of third contact strips 40 can be synchronously rotated, and can intermittently contact with the second contact wedge 38. The sixth spring 39 continuously stores and releases elastic force, so that the strip-shaped rod 14 reciprocates on the cleaning seat 7. The third contact head 41 on the strip-shaped rod 14 can contact with the first contact rod 24. On the one hand, when the first contact rod 24 is contacted, the brush plate 10 reciprocates on the second guide rod 18. The second spring 19 continuously stores and releases elastic force, and the brush plate 10 reciprocates up and down along the surface of the blade 6, effectively removing stubborn stains on the surface of the blade 6, improving the cleaning effect. When the brush plate 10 moves downward, the discharge plate 12 is deflected downward, thereby driving the second extrusion plate 23 to deflect and automatically extrude the upper end of the L-shaped sponge block 11. On the other hand, when the first contact rod 24 moves downward, the second contact head 37 moves downward synchronously, so that the second contact head 37 can contact with the first extrusion plate 13. The third guide rod 35 moves horizontally on the cleaning seat 7. The fifth spring 36 stores elastic force, so that the first extrusion plate 13 automatically extrudes the lower end of the L-shaped sponge block 11, thereby automatically discharging the lubricating oil in the L-shaped sponge block 11, so as to improve the adsorption effect of the L-shaped sponge block 11 on the lubricating oil on the blade 6, and prevent the lubricating oil from scattering on the surface of the steel bar to cause pollution.

[0045] The extension plate 21 slidably connected to the discharge plate 12 can reduce the gap between the discharge plate 12 and the blade 6 when the discharge plate 12 is deflected, so as to avoid the scattering of iron filings and improve the discharging effect, under the cooperation of the third spring 22.

[0046] In the embodiment three, the improvement is made on the basis of the embodiment two. For details, please refer to Figures 1 to 9The shaft 42 is rotatably connected to the cleaning seat 7, and the lower end of the shaft 42 is fixed with a spray head 43. The shaft 42 is connected with a second torsion spring 44 between the shaft 42 and the cleaning seat 7. The upper end of the shaft 42 is fixed with a rubber scraper 45 and a fourth contact strip 46 respectively. The cleaning seat 7 is fixed with a collecting box 50 below.

[0047] The third sliding frame 47 is fixed on the cleaning seat 7, and the fourth contact strip 46 is in contact with a contact bracket 48. The contact bracket 48 is slidably connected to the third sliding frame 47, and the strip-shaped rod 14 is fixed with a third contact wedge 49.

[0048] Reference Figures 4 to 7 The blade 6 needs to be sprayed with lubricating oil after surface cleaning, so as to reduce the friction between the blade and the steel coil. The spray head 43 is communicated with an oil supply device, and new lubricating oil is sprayed on the surface of the cleaned blade 6. When the strip-shaped rod 14 reciprocates, the third contact wedge 49 can be driven to move synchronously, so as to realize the purpose of the third contact wedge 49 in contact with the contact bracket 48. The contact bracket 48 slides on the third sliding frame 47 and is in contact with the fourth contact strip 46 on the shaft 42, so that the shaft 42 is deflected on the cleaning seat 7, and the second torsion spring 44 is energized. On the one hand, the deflection of the shaft 42 drives the spray head 43 to rotate, which can improve the spraying range and effect of the lubricating oil. On the other hand, the shaft 42 can drive the rubber scraper 45 to deflect synchronously, so as to scrape the iron filings and lubricating oil at the bottom of the cleaning seat 7 into the collecting box 50 in time, so as to prevent the iron filings and lubricating oil from accumulating in the cleaning seat 7.

[0049] Embodiment four, please refer to Figures 1 to 9 A steel pipe comprises a steel pipe which is processed by a steel coil slitting device for producing the steel pipe.

[0050] It should be noted that the relational terms such as first and second and the like are used herein solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0051] The above description is only the preferred embodiment of the present application, and it should be pointed out that for those skilled in the art, without departing from the technical principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be considered as the protection scope of the present application.

Claims

1. A steel coil slitting device for steel pipe production, comprising a base (1), characterized in that: A first mounting plate (2) is fixed on the base (1). A first moving block (3) is slidably connected to the first mounting plate (2). A first cutter shaft (4) is rotatably connected to the first mounting plate (2). A second cutter shaft (5) is rotatably connected to the first moving block (3). Several blades (6) are installed on both the first cutter shaft (4) and the second cutter shaft (5). Several movable cleaning seats (7) are provided on both the first moving block (3) and the first mounting plate (2). The cleaning seat (7) is provided with a first contact head (8) on both sides. The first contact head (8) abuts against a first movable bracket (9). A brush plate (10) and an L-shaped sponge block (11) are respectively connected to the first movable bracket (9). A feeding plate (12) is rotatably connected to the L-shaped sponge block (11). The cleaning seat (7) is provided with a movable first extrusion plate (13), and a strip rod (14) is slidably connected to the cleaning seat (7).

2. The steel coil slitting device for steel pipe production according to claim 1, characterized in that: The cleaning seat (7) is fixed with a first guide rod (15), the first movable bracket (9) is elastically connected to the first guide rod (15) through a first spring (16), the end of the first contact head (8) is rotatably connected with a ball (17), the first movable bracket (9) is fixed with a second guide rod (18), the brush plate (10) is elastically connected to the second guide rod (18) through a second spring (19), the feeding plate (12) and the L-shaped sponge block (11) are connected with a first torsion spring (20), and one end of the brush plate (10) is fixed with a first contact rod (24).

3. The steel coil slitting device for steel pipe production according to claim 2, characterized in that: An extension plate (21) is slidably connected to the feed plate (12). A third spring (22) is connected between the extension plate (21) and the feed plate (12). A second extrusion plate (23) is fixed on the feed plate (12). The second extrusion plate (23) is in contact with the surface of the L-shaped sponge block (11). A second sliding bracket (241) is fixed on both the first moving block (3) and the first mounting plate (2). A sliding block (25) is fixed on each of the two cleaning seats (7). The two sliding blocks (25) are elastically connected to the two second sliding brackets (241) through a fourth spring (26).

4. The steel coil slitting device for steel pipe production according to claim 3, characterized in that: A first electric push rod (27) is fixed on the first mounting plate (2), a first abutting strip (28) is fixed on the piston rod of the first electric push rod (27), and a first abutting wedge (29) is fixed on each of the two sliding blocks (25). The first abutting strip (28) abuts against the first abutting wedge (29).

5. The steel coil slitting device for steel pipe production according to claim 1, characterized in that: A second mounting plate (30) is slidably connected to one end of the base (1). A second electric push rod (31) for adjusting the moving position of the second mounting plate (30) is fixed on the base (1). A second moving block (32) is slidably connected to the second mounting plate (30). Limiting grooves (33) are provided on both the second moving block (32) and the second mounting plate (30). Screw jacks (34) are fixed to the upper ends of the first mounting plate (2) and the second mounting plate (30). The moving ends of the two screw jacks (34) are fixedly connected to the first moving block (3) and the second moving block (32) respectively.

6. The steel coil slitting device for steel pipe production according to claim 2, characterized in that: A third guide rod (35) is fixed on the first extrusion plate (13). The third guide rod (35) is elastically connected to the cleaning seat (7) through a fifth spring (36). A second abutment (37) is provided above the first extrusion plate (13). The second abutment (37) is fixed on the first abutment rod (24).

7. The steel coil slitting device for steel pipe production according to claim 1, characterized in that: One end of the bar (14) is fixed with a second abutment wedge (38), and a sixth spring (39) is connected between the second abutment wedge (38) and the cleaning seat (7). Several third abutment bars (40) are fixed on the first cutter shaft (4) and the second cutter shaft (5), and a third abutment head (41) is fixed on the bar (14).

8. The steel coil slitting device for steel pipe production according to claim 1, characterized in that: A shaft (42) is rotatably connected to the cleaning seat (7). A nozzle (43) is fixed at the lower end of the shaft (42). A second torsion spring (44) is connected between the shaft (42) and the cleaning seat (7). A rubber scraper (45) and a fourth contact strip (46) are fixed at the upper end of the shaft (42). A collection box (50) is fixed below the cleaning seat (7).

9. The steel coil slitting device for steel pipe production according to claim 8, characterized in that: The cleaning seat (7) is fixed with a third sliding frame (47), the fourth contact strip (46) is in contact with a contact bracket (48), the contact bracket (48) is slidably connected to the third sliding frame (47), and the strip rod (14) is fixed with a third contact wedge (49).

10. A steel pipe, characterized in that: The invention includes steel pipes, which are prepared by a steel coil slitting device for steel pipe production as described in any one of claims 1-9.

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