CN112718869A - Shaping rolling mill for steel pipe - Google Patents
Shaping rolling mill for steel pipe Download PDFInfo
- Publication number
- CN112718869A CN112718869A CN202011450020.0A CN202011450020A CN112718869A CN 112718869 A CN112718869 A CN 112718869A CN 202011450020 A CN202011450020 A CN 202011450020A CN 112718869 A CN112718869 A CN 112718869A
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- China
- Prior art keywords
- base
- roller
- machine table
- long machine
- steel pipe
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000007493 shaping process Methods 0.000 title claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 23
- 239000010959 steel Substances 0.000 title claims abstract description 23
- 238000005096 rolling process Methods 0.000 title claims abstract description 11
- 238000000465 moulding Methods 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000004513 sizing Methods 0.000 claims 4
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000012545 processing Methods 0.000 abstract description 12
- 238000012546 transfer Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000005299 abrasion Methods 0.000 abstract 1
- 238000013461 design Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
- B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
- B21B19/06—Rolling hollow basic material, e.g. Assel mills
- B21B19/10—Finishing, e.g. smoothing, sizing, reeling
Abstract
The invention discloses a shaping rolling mill for steel pipes, which relates to the technical field of steel pipe processing and comprises a long machine table and a plurality of roller sets movably arranged on the long machine table; the roller set comprises a left base and a right base, a left forming roller is rotationally arranged on the left base, a right forming roller is rotationally arranged on the right base, and the left forming roller and the right forming roller are matched in a forming mode; two elliptical guide rails are fixedly arranged on the long machine table, driving grooved wheels are rotationally arranged in the same ends of the two elliptical guide rails, and a limiting assembly is arranged on the long machine table. The processing section is close to the two elliptical guide rails, and the other part is a transfer section. When the roller set is damaged or works for a long time, the left base and the right base enter the transfer section to be maintained, and because the roller set which is earliest in contact with a tube blank just welded is serious in thermal fatigue and abrasion, the damage of the average roller set in the mode of replacing the roller set in turn is adopted, so that each roller set is protected to be always in a good shaping state, the mode of even maintaining and shaping in turn is adopted, the service life of the roller set is prolonged, and the shaping effect is improved.
Description
Technical Field
The invention relates to the technical field of steel pipe processing, in particular to a shaping rolling mill for steel pipes.
Background
The forming of straight seam steel pipes is a well-established technology, and steel strips are welded into pipe blanks, and then the pipe blanks are shaped and cut to finally form the required steel pipes. Chinese patent No. CN209094256U proposes a steel tube processing device, which comprises an extrusion roller set and a base. The extrusion roller group is supported by the base; a supporting seat is fixed on the base, the extrusion roller set comprises a vertical roller connected to the supporting seat, a supporting shaft is installed in the middle of the vertical roller, and the supporting shaft is detachably connected to the supporting seat through a connecting structure; the connecting structure comprises an inserting part and a positioning part.
But at the design in-process, the pipe after just passing through the high frequency welding needs water-cooling after getting into the forming roll, at this moment, the friction that relative slip arouses between pipe and the forming roll to and the hot fatigue that the forming roll surface is aroused by high temperature pipe and cooling water repeated hot cold, the hot fatigue wearing and tearing of the forming roll that both lead to down simultaneously, make the forming roll fracture easily and damaged, lead to being close to the forming tube life who welds the end and reduce greatly, the quality worsens, the actual production of steel pipe is influenced after the change of forming tube is frequent.
Disclosure of Invention
The invention aims to provide a steel pipe shaping rolling mill which has the advantages of convenience and quickness in adjustment, stability in shaping, long service life and easiness in part replacement.
The invention is realized by the following technical scheme: a steel pipe shaping rolling mill comprises a long machine table and a plurality of roller sets movably arranged on the long machine table; the roller set comprises a left base and a right base, a left forming roller is rotationally arranged on the left base, a right forming roller is rotationally arranged on the right base, and the left forming roller and the right forming roller are matched in a forming mode; two elliptical guide rails arranged in a mirror image mode are fixedly arranged on the long machine table, driving grooved wheels are rotatably arranged in the same ends of the two elliptical guide rails, and the left base and the right base respectively and independently slide on the two elliptical guide rails; two limiting assemblies used for limiting the left base and the right base to be driven by the advancing tube blank to retreat are arranged on the long machine table.
By adopting the technical scheme, the positions, close to each other, of the two elliptical guide rails are processing sections, the rest parts are transfer sections, after the pipe blank enters the shaping rolling mill, the pipe blank is shaped by the aid of the roller sets in the processing sections, the left base and the right base can respectively enter the transfer sections to be maintained, the pipe blank can also enter the processing sections again to be shaped, and the head roller set and the tail roller set are replaced at the same time. When the roller set is damaged or works for a long time, the left base and the right base enter the transfer section for maintenance, and because the roller set which is firstly contacted with the tube blank which is just welded is seriously worn due to thermal fatigue, the damage degree of the roller set is averaged by adopting a mode of replacing the roller set in turn, so that each roller set is protected to be always in a good shaping state.
Further setting the following steps: the right base is fixedly provided with a guide cylinder, an opening of the guide cylinder is of a flaring structure, the left base is fixedly provided with a guide column, and the guide column is in splicing fit with the guide cylinder.
Through adopting above-mentioned technical scheme, when right base and left base follow oval guide rail simultaneously and get into the processing section, the cooperation of guide post and guide cylinder makes the roller set can stabilize and play the design effect to the pipe blank.
Further setting the following steps: the bottom of the left base/the right base is provided with a base which is in sliding fit with the elliptical guide rail, and four walking wheels which are opposite to each other in pairs are arranged in the base.
Through adopting above-mentioned technical scheme, left base and right base can slide in oval guide rail.
Further setting the following steps: the periphery of the driving grooved wheel is provided with a plurality of grooves, and a semicircular plate which is in splicing fit with the grooves is fixedly arranged on the left base/the right base.
Through adopting above-mentioned technical scheme, the initiative sheave initiative rotation in-process for left base and right base can enter into the design position simultaneously through the cooperation of recess and semicircle board.
Further setting the following steps: the long machine table is internally provided with two upper gears which are coaxially fixed with the two driving grooved wheels respectively, the long machine table is internally provided with a gear shaft, the gear shaft is fixedly provided with two lower gears which are respectively meshed with the two upper gears, and the outside of the long machine table is fixedly provided with a driving motor which is in transmission connection with the gear shaft.
Through adopting above-mentioned technical scheme, driving motor starts the back, drives two lower gear rotations through the gear shaft, and the meshing of rethread gear drives two initiative sheaves simultaneously and rotates.
Further setting the following steps: the limiting assembly comprises a triangular block embedded on the surface of the long machine table, the triangular block is positioned at the discharge end of the tube blank on the long machine table, the right-angle surface of the triangular block is opposite to the feeding direction of the tube blank, a placement groove used for placing the triangular block is formed in the surface of the long machine table, and a reset spring is fixedly arranged between the triangular block and the bottom wall of the placement groove.
Through adopting above-mentioned technical scheme, the triangle piece in the resettlement groove can be convenient for the roller set and get into the design position, prevents simultaneously that the roller set that gets into the design position from being backed up by the promotion of advancing the pipe.
Further setting the following steps: the left forming roller can be detachably arranged on the left base, and the right forming roller can be detachably arranged on the right base.
Through adopting above-mentioned technical scheme, when left forming roll or right forming roll took place wearing and tearing need change, can change alone impaired left forming roll or right forming roll.
Further setting the following steps: the angles of the splicing surfaces formed by the left forming roller and the right forming roller in the forming matching way are 0 degree, 45 degrees and 135 degrees.
By adopting the technical scheme, the pipe blank is comprehensively shaped at different angles.
In conclusion, the beneficial technical effects of the invention are as follows:
(1) the left base and the right base can slide on the elliptical guide rail, so that the left forming roller and the right forming roller can be maintained and replaced conveniently, and the setting rolling mill is not stopped in the maintenance process, so that the production of the steel pipe is not influenced;
(2) the roller sets are alternately replaced to realize the head-to-tail alternation of the roller sets, so that the damage of the roller sets is averaged, each roller set is protected to be in a good shaping state all the time, the service life of the roller sets is prolonged, and the shaping effect is improved;
(3) the pipe blank is shaped from different angles through the plurality of roller sets, so that the forming quality of the pipe blank is improved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a schematic view showing the structure of the roll stack of the present invention.
Reference numerals: 1. a long machine platform; 2. a roller set; 3. a left base; 4. a right base; 5. a left forming roll; 6. a right forming roll; 7. an elliptical guide rail; 8. a driving sheave; 9. a guide cylinder; 10. a guide post; 11. a base; 12. a traveling wheel; 13. a groove; 14. a semicircular plate; 15. an upper gear; 16. a gear shaft; 17. a lower gear; 18. a drive motor; 19. a triangular block; 20. a placing groove; 21. a return spring; 30. and (5) tube blanks.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1, the steel tube shaping rolling mill disclosed by the invention comprises a long machine table 1, wherein two elliptical guide rails 7 are symmetrically and fixedly arranged on the upper surface of an upper machine table by taking the length direction as a central axis, and a plurality of roller sets 2 are movably arranged on the upper surface of the upper machine table. The processing section is close to the two elliptical guide rails 7, and the other part is a transfer section.
Referring to fig. 1 and 4, a roller set 2 includes a left base 3 and a right base 4, a left forming roller 5 is rotatably provided on the left base 3, and a right forming roller 6 is rotatably provided on the right base 4. Left shaping roller 5 can be dismantled and set up on left base 3, and right shaping roller 6 can be dismantled and set up on right base 4. When the left forming roller 5 or the right forming roller 6 is worn and needs to be replaced, the damaged left forming roller 5 or the right forming roller 6 can be replaced independently. The angles of the splicing surfaces formed by the molding matching of the left molding roller 5 and the right molding roller 6 are 0 degree, 45 degree and 135 degree. The tube blank 30 is shaped comprehensively through shaping matching at different angles.
Referring to fig. 2 and 4, the left base 3 and the right base 4 respectively slide on two elliptical guide rails 7 independently, each elliptical guide rail 7 is provided with a plurality of left bases 3 or right bases 4, and the left bases 3 or right bases 4 at the processing section are in front-back abutting joint. The opening that is fixed with guide cylinder 9 and guide cylinder 9 on the right base 4 is flaring structure, is fixed with guide post 10 on the left base 3, and guide post 10 and guide cylinder 9 are pegged graft to cooperate. When the right base 4 and the left base 3 simultaneously follow the elliptical guide rail 7 to enter a processing section, the roller set 2 can stably shape the tube blank 30 by the aid of the cooperation of the guide columns 10 and the guide cylinders 9. The left base 3 is fixed with a base 11 in sliding fit with the elliptical guide rail 7, the bottom end of the right base 4 is fixed with a base 11 in sliding fit with the elliptical guide rail 7, four walking wheels 12 which are opposite in pairs are arranged in the base 11, and the walking wheels 12 can swing in the base 11 in a small range.
Referring to fig. 2 and 3, the driving sheaves 8 are rotatably provided in the same end of the two elliptical guide rails 7, the driving sheaves 8 are located at the end of the tube blank 30 in the entering direction (the advancing direction of the tube blank 30 is the direction of the arrow in fig. 1), and the rotating directions of the two driving sheaves 8 are opposite. A plurality of grooves 13 are formed in the periphery of the driving sheave 8 at equal intervals, a semicircular plate 14 in splicing fit with the grooves 13 is fixed on one side, away from the guide column 10, of the left base 3, and a semicircular plate 14 in splicing fit with the grooves 13 is fixed on one side, away from the guide cylinder 9, of the right base 4. In the process of the active rotation of the driving sheave 8, the left base 3 and the right base 4 can simultaneously enter the shaping position of the pipe blank 30 through the matching of the groove 13 and the semicircular plate 14. Two upper gears 15 which are coaxially fixed with the two driving grooved wheels 8 respectively are rotatably arranged in the long machine table 1, a gear shaft 16 is horizontally and rotatably arranged in the long machine table 1, two lower gears 17 which are respectively meshed with the two upper gears 15 are fixed on the gear shaft 16, a driving motor 18 is fixed on the outer portion of the long machine table 1, and a driving shaft of the driving motor 18 is in transmission connection with the gear shaft 16 through a coupler. After the driving motor 18 is started, the two lower gears 17 are driven to rotate through the gear shaft 16, and then the two driving grooved wheels 8 are driven to rotate through the meshing of the upper gear 15, so that the roller set 2 is pushed to enter a shaping position.
Referring to fig. 1 and 3, the long machine table 1 is provided with two limiting assemblies for respectively limiting the left base 3 and the right base 4 to be driven by the advancing tube blank 30 to retreat. The limiting assembly comprises a triangular block 19 embedded in the surface of the long machine table 1, the triangular block 19 and the driving sheave 8 are located at the same end of the long machine table 1, the triangular block 19 is located at the discharge end of the tube blank 30 on the long machine table 1, the right-angle surface of the triangular block 19 is opposite to the feeding direction of the tube blank 30, the surface of the long machine table 1 is provided with a placement groove 20 for placing the triangular block 19, and a reset spring 21 is fixed between the triangular block 19 and the bottom wall of the placement groove 20. The triangular blocks 19 in the seating grooves 20 facilitate the entry of the roll stack 2 into the setting position while preventing the roll stack 2 entering the setting position from being pushed backward by the advancing tube blank 30.
The working principle and the beneficial effects of the invention are as follows:
after the tube blank 30 enters the shaping rolling mill, the plurality of roller sets 2 in the processing section simultaneously play a shaping role in the tube blank 30, and each roller set 2 can adopt different shaping angles, so that the integral shaping effect of the tube blank 30 is improved.
When the left forming roller 5 and the right forming roller 6 are worn or work for a long time, the left base 3 and the right base 4 can respectively enter the transfer section to be maintained or replaced, and other roller sets 2 keep the continuous shaping of the tube blank 30 at the moment, so that the maintenance without stopping is realized.
Because the earliest roller set 2 thermal fatigue wearing and tearing with just welded pipe 30 contact are serious, this closest point's roller set 2 is impaired seriously, through using the roller set 2 that maintain or the most distant roller set 2 replaces closest point's roller set 2, this time head and the tail roller set 2 replace, adopt the average roller set 2's of mode of changing roller set 2 damage degree in turn, and then each roller set 2 of protection can be in a good typical conditions all the time, extension roller set 2's life, improve the design effect.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (8)
1. The utility model provides a shaping rolling mill of steel pipe which characterized in that: comprises a long machine table (1) and a plurality of roller sets (2) movably arranged on the long machine table (1);
the roller set (2) comprises a left base (3) and a right base (4), a left forming roller (5) is rotationally arranged on the left base (3), a right forming roller (6) is rotationally arranged on the right base (4), and the left forming roller (5) is matched with the right forming roller (6) in a forming mode;
two elliptical guide rails (7) arranged in a mirror image mode are fixedly arranged on the long machine table (1), driving grooved wheels (8) are rotatably arranged in the same ends of the two elliptical guide rails (7), and the left base (3) and the right base (4) respectively and independently slide on the two elliptical guide rails (7); two limiting assemblies used for respectively limiting the left base (3) and the right base (4) to be driven by the advancing tube blank (30) to retreat are arranged on the long machine table (1).
2. The steel pipe shaping mill according to claim 1, characterized in that: the right base (4) is fixedly provided with a guide cylinder (9), an opening of the guide cylinder (9) is of a flaring structure, the left base (3) is fixedly provided with a guide column (10), and the guide column (10) is in splicing fit with the guide cylinder (9).
3. A steel pipe sizing mill according to claim 2, characterized in that: the bottom end of the left base (3)/the right base (4) is provided with a base (11) which is matched with the elliptic guide rail (7) in a sliding way, and four walking wheels (12) which are opposite to each other in pairs are arranged in the base (11).
4. A steel pipe sizing mill according to claim 3, characterized in that: a plurality of grooves (13) are arranged on the peripheral side of the driving grooved wheel (8), and a semicircular plate (14) which is in splicing fit with the grooves (13) is fixedly arranged on the left base (3)/the right base (4).
5. A steel pipe sizing mill according to claim 4, characterized in that: two upper gears (15) which are coaxially fixed with the two driving grooved wheels (8) respectively are rotatably arranged in the long machine table (1), a gear shaft (16) is rotatably arranged in the long machine table (1), two lower gears (17) which are respectively meshed with the two upper gears (15) are fixedly arranged on the gear shaft (16), and a driving motor (18) which is in transmission connection with the gear shaft (16) is fixedly arranged outside the long machine table (1).
6. The steel pipe shaping mill according to claim 1, characterized in that: the limiting assembly comprises a triangular block (19) embedded on the surface of the long machine table (1), the triangular block (19) is located at the discharge end of a tube blank (30) on the long machine table (1) and the right-angle surface of the triangular block (19) is opposite to the feeding direction of the tube blank (30), a placement groove (20) for placing the triangular block (19) is formed in the surface of the long machine table (1), and a reset spring (21) is fixedly arranged between the triangular block (19) and the bottom wall of the placement groove (20).
7. A steel pipe profiling mill according to any one of claims 1 to 6 wherein: the left forming roller (5) is detachably arranged on the left base (3), and the right forming roller (6) is detachably arranged on the right base (4).
8. A steel pipe sizing mill according to claim 7, characterized in that: the angles of the splicing surfaces formed by the molding matching of the left molding roller (5) and the right molding roller (6) are 0 degree, 45 degree and 135 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011450020.0A CN112718869B (en) | 2020-12-09 | 2020-12-09 | Shaping rolling mill for steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011450020.0A CN112718869B (en) | 2020-12-09 | 2020-12-09 | Shaping rolling mill for steel pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112718869A true CN112718869A (en) | 2021-04-30 |
| CN112718869B CN112718869B (en) | 2023-02-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011450020.0A Active CN112718869B (en) | 2020-12-09 | 2020-12-09 | Shaping rolling mill for steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112718869B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11104710A (en) * | 1997-10-03 | 1999-04-20 | Yoshitomi Onoda | Making of seamless square steel pipe |
| JP2000024703A (en) * | 1998-07-13 | 2000-01-25 | Kawasaki Steel Corp | Manufacture of seamless tube |
| CN101954379A (en) * | 2010-09-19 | 2011-01-26 | 张晓玲 | Fast roll changing device of vertical rolling mill |
| CN110252825A (en) * | 2019-06-26 | 2019-09-20 | 扬州伟光机械制造有限公司 | The process units of welded pipe units |
| CN210908924U (en) * | 2019-08-30 | 2020-07-03 | 天津众意达管业有限公司 | Steel pipe forming device |
-
2020
- 2020-12-09 CN CN202011450020.0A patent/CN112718869B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11104710A (en) * | 1997-10-03 | 1999-04-20 | Yoshitomi Onoda | Making of seamless square steel pipe |
| JP2000024703A (en) * | 1998-07-13 | 2000-01-25 | Kawasaki Steel Corp | Manufacture of seamless tube |
| CN101954379A (en) * | 2010-09-19 | 2011-01-26 | 张晓玲 | Fast roll changing device of vertical rolling mill |
| CN110252825A (en) * | 2019-06-26 | 2019-09-20 | 扬州伟光机械制造有限公司 | The process units of welded pipe units |
| CN210908924U (en) * | 2019-08-30 | 2020-07-03 | 天津众意达管业有限公司 | Steel pipe forming device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112718869B (en) | 2023-02-03 |
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