CN205732412U - One gives roll forming device - Google Patents
One gives roll forming device Download PDFInfo
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- CN205732412U CN205732412U CN201620031876.7U CN201620031876U CN205732412U CN 205732412 U CN205732412 U CN 205732412U CN 201620031876 U CN201620031876 U CN 201620031876U CN 205732412 U CN205732412 U CN 205732412U
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- worm gear
- inwall
- screw elevator
- gear screw
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Abstract
The utility model discloses one and give roll forming device, including: base, column, crossbeam, two outside roller mechanisms, upper pressing roll mechanism, upper driving roller mechanism, inwall roller mechanism, snub pulley mechanism and lower driving roller mechanism；Wherein, base, two columns, crossbeams are combined into a frame closed, the crossbeam be positioned at upper end is installed successively pressing roll mechanism, on drive roller mechanism and inwall roller mechanism, the base of bottom is installed snub pulley mechanism and lower driving roller mechanism successively；Using this utility model of technique scheme, compact conformation, in addition to producing steel pipe continuously, steel pipe can be produced with monovolume, steel pipe can be produced with veneer again, improve the Forming Quality of production tube, and greatly improve production efficiency, and stable and reliable operation, operate safety and use very convenient.
Description
Technical field
This utility model relates to the continuously shaped straight-seam pipes of heavy caliber and manufactures equipment, gives the shaped device of bender particularly to a kind of employing.
Background technology
At present, along with advancing of science and technology, the transfer pipeline product in machinery industry is increased by all trades and professions day by day；In oil exploitation industry, need substantial amounts of heavy caliber and high performance conveying pipe.It is known that current, the conveying pipe in oil exploitation, mostly use the carbon steel pipe of high-frequency welding, and the intensity and wall thickness to steel pipe has had higher demand.And current continuously shaped unit all uses kink and Shearing Butt Resistance Welder to run with the continuous of guarantee unit, and kink can not meet high-strength steel and the production requirement of big wall thickness tubing, and kink floor space is big, and investment is high.Thus be accomplished by monovolume when producing the steel pipe of high-strength steel, big wall thickness and produce or veneer production, and existing forming technique is big due to frame spacing, in forming process, steel pipe head is caused a series of deformation defect such as side wave, depression, makes the strip steel can not good joint close, it is impossible to welding.Therefore, for the problem of above-mentioned existence, research and development a kind of Straight Welded Pipe welding quantity-produced production line, this production line can produce steel pipe with monovolume, steel pipe can be produced with spiral-plate again, use and meet high-strength steel, the needs in large wall thickness steel tube market, be the most necessary.
Summary of the invention
This utility model for above-mentioned technical problem, proposes a kind of novel to give roll forming device.
For reaching object above, it is achieved through the following technical solutions:
One gives roll forming device, including: base, column, crossbeam, two outside roller mechanisms, upper pressing roll mechanism, upper driving roller mechanism, inwall roller mechanism, snub pulley mechanism and lower driving roller mechanism；
Wherein, base, two columns, crossbeams are combined into a frame closed, the crossbeam be positioned at upper end is installed successively pressing roll mechanism, on drive roller mechanism and inwall roller mechanism, the base of bottom is installed snub pulley mechanism and lower driving roller mechanism successively；
Upper pressing roll mechanism is arranged on crossbeam, the center radian of the processed pipe entered is become recessed by epirelief by the pressing action of upper pressure roller, the position of upper pressure roller carries out upper and lower regulation according to the specification of processed pipe, and the up-down adjustment device of upper pressure roller is made up of upper pressing roller holder, upper pressure roller slide, reducing motor I and worm gear screw elevator I；Wherein, the bottom of upper pressing roller holder is provided with the chute downwardly extended, and in chute, fit into the upper pressure roller slide along slide, the top of upper pressure roller slide connects the bottom of adpting flange I, the bottom of upper pressure roller slide connects upper pressure roller, filling the worm gear screw elevator I driven by reducing motor I on upper pressing roller holder end face, worm gear screw elevator I lift side is fixed with adpting flange I top；
Snub pulley mechanism is made up of roller seat, bearing block III, subiculum roll shaft, snub pulley, worm gear screw elevator II, reducing motor II, adpting flange II, snub pulley mechanism is arranged on base, on roller seat, symmetry is equipped with two bearing blocks III, snub pulley axle is loaded in two bearing blocks III, on subiculum roll shaft, synchronous axial system is equipped with snub pulley, the bottom surface of roller seat fixes adpting flange II, the screw head of worm gear screw elevator II installs the other end of adpting flange II, and the power shaft of worm gear screw elevator II is connected with the output shaft of reducing motor II；
Upper driving roller mechanism is arranged on crossbeam, lower driving roller mechanism is arranged on base, wherein, processed pipe is by upper, lower driving roller drives and runs along production line direction, in upper driving roller mechanism, the upper up-down adjustment device driving roller is by upper driving roller support, reducing motor IV, two adpting flanges III, worm gear screw elevator IV forms, wherein, worm gear screw elevator IV is double lead worm gear screw elevator, the top of two adpting flanges III is connected with two lifting screws of worm gear screw elevator IV respectively, bottom is equiped with bearing block I respectively, drive roller shaft on loading in two bearings seat I, in drive roller shaft, synchronous axial system is equipped with driving roller, the input of drive roller shaft is linked by universal drive shaft I with main gear reducer I output shaft, mair motor I drives main gear reducer I to drive upper driving roller to rotate；Reducing motor IV be assemblied in driving roller cradle top surface, and drive worm gear screw elevator IV；
In lower driving roller mechanism, the lower up-down adjustment device driving roller is made up of lower driving roller support, reducing motor V, two adpting flanges IV, worm gear screw elevators V；
Wherein, worm gear screw elevator V is double lead worm gear screw elevator；The bottom of two adpting flanges IV is connected with two lifting screws of worm gear screw elevator V respectively, top is all equiped with bearing block II, drive roller shaft under loading in two bearings seat II, in lower drive roller shaft, synchronous axial system is equipped with lower driving roller, the input of lower drive roller shaft is linked by universal drive shaft II with main gear reducer II output shaft, and mair motor II drives main gear reducer II to drive lower driving roller to rotate；Reducing motor V and worm gear screw elevator V are loaded on lower driving roller cradle bottom surface, and drive worm gear screw elevator V by reducing motor V；
Outside roller mechanism includes: outside roller, roller seat, outside roller crossbeam, screw, bearing, worm gear screw elevator III and reducing motor III；Wherein, two outside roller mechanisms are symmetrically arranged on base, according to the pass of processed pipe, adjust the position of outside roller on the roller mechanism of outside；Outside roller is arranged on roller seat, roller seat is arranged on the roller crossbeam of outside, the outside roller crossbeam along slide is fitted in the top chute of bearing, the top of outside roller crossbeam is equipped with outside roller, the base plate of outside roller crossbeam connects screw I, the hypomere of worm gear screw elevator III screw rod is threaded in screw I, drives worm gear screw elevator III by reducing motor III；
Inwall roller mechanism is arranged on crossbeam, pass according to processed pipe, adjusting the position of inwall roller, the up-down adjustment device of the inwall roller group of inwall roller mechanism is made up of inwall roller slide, inwall roller support, reducing motor VI, worm gear screw elevator VI, screw II；Crossbeam is installed inwall roller support, equipped with the worm gear screw elevator VI driven by reducing motor VI in inwall roller cradle top surface, the inwall roller slide along slide is fitted in the bottom chute of inwall roller support, the top board of inwall roller slide connects screw II, the bottom of inwall roller slide connects inwall roller and adjusts seat, inwall roller adjusts the bottom of seat and is provided with inwall roller, and the screw rod hypomere of worm gear screw elevator VI is threaded in screw II.
Use this utility model of technique scheme compared with prior art, the most reasonable in design, compact conformation, in addition to producing steel pipe continuously, steel pipe can be produced with monovolume, steel pipe can be produced with veneer again, improve the Forming Quality of production tube, and greatly improve production efficiency, and stable and reliable operation, operate safety and use very convenient.
Described above is only the general introduction of technical solutions of the utility model, in order to better understand technological means of the present utility model, and can be practiced according to the content of description, and in order to above and other objects, features and advantages of the present utility model can be become apparent, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, describe in detail as follows.
Accompanying drawing explanation
This utility model totally 4 width accompanying drawing, wherein:
Accompanying drawing 1 is the horizontal layout schematic diagram of the specific embodiment of the present invention；
Accompanying drawing 2 is the section view enlarged diagram in Fig. 1 along line A-A；
Accompanying drawing 3 is the section view enlarged diagram in Fig. 1 along line B-B；
Accompanying drawing 4 is the section view enlarged diagram in Fig. 1 along line C-C.
nullIn figure: 1、Base，2、Column，3、Crossbeam，4、Outside roller mechanism，5、Upper pressing roll mechanism，6、Upper driving roller mechanism，7、Inwall roller mechanism，8、Snub pulley mechanism，9、Lower driving roller mechanism，10、Reducing motor III，11、Worm gear screw elevator III，12、Limit roller crossbeam，13、Screw I，14、Limit roller，15、Limit roller seat，16、Upper pressing roller holder，17、Worm gear screw elevator I，18、Adpting flange I，19、Upper pressure roller slide，20、Upper pressure roller，21、Roll shaft，22、Reducing motor I，23、Bearing block III，24、Subiculum roll shaft，25、Snub pulley，26、Worm gear screw elevator II，27、Reducing motor II，28、Roller seat，29、Adpting flange II，30、Upper driving roller support，31、Worm gear screw elevator IV，32、Upper driving roller，33、Adpting flange III，34、Bearing block I，35、Upper drive roller shaft，36、Reducing motor IV，37、Universal drive shaft I，38、Main gear reducer I，39、Mair motor I，40、Lower driving roller support，41、Adpting flange IV，42、Lower driving roller、43、Worm gear screw elevator V，44、Bearing block II，45、Lower drive roller shaft，46、Universal drive shaft II，47、Main gear reducer II、48、Mair motor II、49、Inwall roller support，50、Screw II，51、Worm gear screw elevator VI，52、Reducing motor VI，53、Inwall roller slide，54、Inwall roller adjusts seat，55、Inwall roll shaft，56、Inwall roller seat，57、Inwall roller，58 processed pipes，59、Bearing，60、Reducing motor V.
Detailed description of the invention
One as shown in Figure 1, Figure 2, Figure 3 and Figure 4 gives roll forming device, including: base 1, column 2, crossbeam 3, two outside roller mechanism 4, upper pressing roll mechanism 5, upper driving roller mechanism 6, inwall roller mechanism 7, snub pulley mechanism 8 and lower driving roller mechanism 9；
Wherein, 1, two columns 2 of base, crossbeam 3 are combined into a frame closed, the crossbeam 3 be positioned at upper end is installed successively pressing roll mechanism 5, on drive roller mechanism 6 and inwall roller mechanism 7, the base 1 of bottom is installed snub pulley mechanism 8 and lower driving roller mechanism 9 successively；
Upper pressing roll mechanism 5 is arranged on crossbeam 3, the center radian of the processed pipe 58 entered is become recessed by epirelief by the pressing action of upper pressure roller 20, the position of upper pressure roller 20 carries out upper and lower regulation according to the specification of processed pipe 58, and the up-down adjustment device of upper pressure roller 20 is made up of upper pressing roller holder 16, upper pressure roller slide 19, reducing motor I 22 and worm gear screw elevator I 17；Wherein, the bottom of upper pressing roller holder 16 is provided with the chute downwardly extended, and in chute, fit into the upper pressure roller slide 19 along slide, the top of upper pressure roller slide 19 connects the bottom of adpting flange I 18, the bottom of upper pressure roller slide 19 connects upper pressure roller 20, filling the worm gear screw elevator I 17 driven by reducing motor I 22 on upper pressing roller holder 16 end face, worm gear screw elevator I 17 lift side is fixed with adpting flange I 18 top；Achieve and use integrally-regulated to upper pressure roller of mechanization；
Snub pulley mechanism 8 is by roller seat 28, bearing block III 23, subiculum roll shaft 24, snub pulley 25, worm gear screw elevator II 26, reducing motor II 27, adpting flange II 29 forms, snub pulley mechanism 8 is arranged on base 1, on roller seat 28, symmetry is equipped with two bearing blocks III 23, snub pulley axle 24 is loaded in two bearing blocks III 23, on subiculum roll shaft 24, synchronous axial system is equipped with snub pulley 25, the bottom surface of roller seat 28 fixes adpting flange II 29, the screw head of worm gear screw elevator II 26 installs the other end of adpting flange II 29, the power shaft of worm gear screw elevator II 26 is connected with the output shaft of reducing motor II 27；
nullUpper driving roller mechanism 6 is arranged on crossbeam 3，Lower driving roller mechanism 9 is arranged on base，Wherein，Processed pipe 58 is by upper、Lower driving roller drives and runs along production line direction，In upper driving roller mechanism 6, the upper up-down adjustment device driving roller is by upper driving roller support 30、Reducing motor IV 36、Two adpting flanges III 33、Worm gear screw elevator IV 31 forms，Wherein，Worm gear screw elevator IV 31 is double lead worm gear screw elevator，The top of two adpting flanges III 33 is connected with two lifting screws of worm gear screw elevator IV 31 respectively，Bottom is equiped with bearing block I 34 respectively，Drive roller shaft 35 on loading in two bearings seat I 34，In drive roller shaft 35, synchronous axial system is equipped with driving roller 32，The input of drive roller shaft 35 is linked by universal drive shaft I 37 with main gear reducer I 38 output shaft，Mair motor I 39 drives main gear reducer 1 to drive upper driving roller 32 to rotate；Reducing motor IV 36 be assemblied on driving roller support 30 end face, and drive worm gear screw elevator IV 31；
In lower driving roller mechanism 9, the lower up-down adjustment device driving roller is made up of lower driving roller support 40, reducing motor V 60, two adpting flanges IV 41, worm gear screw elevators V 43；
Wherein, worm gear screw elevator V 43 is double lead worm gear screw elevator；The bottom of two adpting flanges IV 41 is connected with two lifting screws of worm gear screw elevator V 43 respectively, top is all equiped with bearing block II 44, drive roller shaft 45 under loading in two bearings seat II 44, in lower drive roller shaft 45, synchronous axial system is equipped with lower driving roller 42, the input of lower drive roller shaft 45 is linked by universal drive shaft II 46 with main gear reducer II 47 output shaft, and mair motor II 48 drives main gear reducer II 47 to drive lower driving roller 42 to rotate；Reducing motor V 60 and worm gear screw elevator V 43 are loaded on lower driving roller support 40 bottom surface, and drive worm gear screw elevator V 43 by reducing motor V 60；
Outside roller mechanism 4 includes: outside roller 14, roller seat 15, outside roller crossbeam 12, screw I 13, bearing 59, worm gear screw elevator III 11 and reducing motor III 10；Wherein, two outside roller mechanisms 4 are symmetrically arranged on base 1, according to the pass of processed pipe 58, adjust the position of outside roller 14 on the roller mechanism 4 of outside；Outside roller 14 is arranged on roller seat 15, roller seat 15 is arranged on the roller crossbeam 12 of outside, the outside roller crossbeam 12 along slide is fitted in the top chute of bearing 59, the top of outside roller crossbeam 12 is equipped with outside roller 14, the base plate of outside roller crossbeam 12 connects screw I 13, the hypomere of worm gear screw elevator III 11 screw rod is threaded in screw I 13, drives worm gear screw elevator III 11 by reducing motor III 10；Achieve and use integrally-regulated to outside roller group of mechanization；
Inwall roller mechanism 7 is arranged on crossbeam 3, pass according to processed pipe 58, adjusting the position of inwall roller, the up-down adjustment device of the inwall roller group of inwall roller mechanism 7 is made up of inwall roller slide 53, inwall roller support 49, reducing motor VI 52, worm gear screw elevator VI 51, screw II 50；Crossbeam 3 is installed inwall roller support 49, equipped with the worm gear screw elevator VI 51 driven by reducing motor VI 52 on inwall roller support 49 end face, the inwall roller slide 53 along slide is fitted in the bottom chute of inwall roller support 49, the top board of inwall roller slide 53 connects screw II 50, the bottom of inwall roller slide 53 connects inwall roller and adjusts seat 54, inwall roller adjusts the bottom of seat 54 and is provided with inwall roller 57, and the screw rod hypomere of worm gear screw elevator VI 51 is threaded in screw II 50；Achieve and use integrally-regulated to inwall roller group of mechanization.
The above, it it is only preferred embodiment of the present utility model, not this utility model is made any pro forma restriction, although this utility model is disclosed above with preferred embodiment, but it is not limited to this utility model, any those skilled in the art are in the range of without departing from technical solutions of the utility model, the technology contents disclosed when available appeal is made a little change or is modified to the Equivalent embodiments of equivalent variations, in every case it is the content without departing from technical solutions of the utility model, according to technical spirit of the present utility model to any simple modification made for any of the above embodiments, equivalent variations and modification, all still fall within the range of technical solutions of the utility model.
Claims (1)
1. one kind is given roll forming device, it is characterized in that: include, base (1), column (2), crossbeam (3), two outsides roller mechanism (4), upper pressing roll mechanism (5), upper driving roller mechanism (6), inwall roller mechanism (7), snub pulley mechanism (8) and lower driving roller mechanisms (9)；
Wherein, base (1), two columns (2), crossbeams (3) are combined into a frame closed, the crossbeam (3) be positioned at upper end is installed pressing roll mechanism (5), upper driving roller mechanism (6) and inwall roller mechanism (7) successively, the base (1) of bottom is installed snub pulley mechanism (8) and lower driving roller mechanism (9) successively；
Described upper pressing roll mechanism (5) is arranged on crossbeam (3), the center radian of the processed pipe (58) entered is become recessed by epirelief by the pressing action of upper pressure roller (20), the position of upper pressure roller (20) carries out upper and lower regulation according to the specification of processed pipe (58), and the up-down adjustment device of upper pressure roller (20) is made up of upper pressing roller holder (16), upper pressure roller slide (19), reducing motor I (22) and worm gear screw elevator I (17)；Wherein, the bottom of upper pressing roller holder (16) is provided with the chute downwardly extended, and in chute, fit into the upper pressure roller slide (19) along slide, the top of upper pressure roller slide (19) connects the bottom of adpting flange I (18), the bottom of upper pressure roller slide (19) connects upper pressure roller (20), filling the worm gear screw elevator I (17) driven by reducing motor I (22) on upper pressing roller holder (16) end face, worm gear screw elevator I (17) lift side is fixed with adpting flange I (18) top；
Described snub pulley mechanism (8) is by roller seat (28), bearing block III (23), subiculum roll shaft (24), snub pulley (25), worm gear screw elevator II (26), reducing motor II (27), adpting flange II (29) forms, snub pulley mechanism (8) is arranged on base (1), upper symmetrical equipped with two bearing blocks III (23) at roller seat (28), snub pulley axle (24) is loaded in two bearing blocks III (23), the upper synchronous axial system of subiculum roll shaft (24) is equipped with snub pulley (25), the bottom surface of roller seat (28) fixes adpting flange II (29), the screw head of worm gear screw elevator II (26) installs the other end of adpting flange II (29), the power shaft of worm gear screw elevator II (26) is connected with the output shaft of reducing motor II (27)；
nullDescribed upper driving roller mechanism (6) is arranged on crossbeam (3)，Lower driving roller mechanism (9) is arranged on base，Wherein，Processed pipe (58) is by upper、Lower driving roller drives and runs along production line direction，In upper driving roller mechanism (6), the upper up-down adjustment device driving roller is by upper driving roller support (30)、Reducing motor IV (36)、Two adpting flanges III (33)、Worm gear screw elevator IV (31) forms，Wherein，Worm gear screw elevator IV (31) is double lead worm gear screw elevator，The top of two adpting flanges III (33) is connected with two lifting screws of worm gear screw elevator IV (31) respectively，Bottom is equiped with bearing block I (34) respectively，Upper drive roller shaft (35) is loaded in two bearings seat I (34)，The upper synchronous axial system of drive roller shaft (35) is equipped with driving roller (32)，The input of drive roller shaft (35) is linked by universal drive shaft I (37) with main gear reducer I (38) output shaft，Mair motor I (39) drives and drives roller (32) to rotate in main gear reducer I (38) drive；Described reducing motor IV (36) is assemblied on driving roller support (30) end face, and drives worm gear screw elevator IV (31)；
In lower driving roller mechanism (9), the lower up-down adjustment device driving roller is made up of lower driving roller support (40), reducing motor V (60), two adpting flanges IV (41), worm gear screw elevators V (43)；
Wherein, worm gear screw elevator V (43) is double lead worm gear screw elevator；The bottom of two adpting flanges IV (41) is connected with two lifting screws of worm gear screw elevator V (43) respectively, top is all equiped with bearing block II (44), drive roller shaft (45) under loading in two bearings seat II (44), the upper synchronous axial system of lower drive roller shaft (45) is equipped with lower driving roller (42), the input of lower drive roller shaft (45) is linked by universal drive shaft II (46) with main gear reducer II (47) output shaft, mair motor II (48) drives main gear reducer II (47) to drive roller (42) to rotate under driving；Described reducing motor V (60) and worm gear screw elevator V (43) are loaded on lower driving roller support (40) bottom surface, and drive worm gear screw elevator V (43) by reducing motor V (60)；
Described outside roller mechanism (4) including: outside roller (14), roller seat (15), outside roller crossbeam (12), screw I (13), bearing (59), worm gear screw elevator III (11) and reducing motor III (10)；Wherein, two outsides roller mechanism (4) are symmetrically arranged on base (1), according to the pass of processed pipe (58), adjust the position of outside roller (14) on outside roller mechanism (4)；Outside roller (14) is arranged on roller seat (15), roller seat (15) is arranged on outside roller crossbeam (12), outside roller crossbeam (12) along slide is fitted in the top chute of bearing (59), the top of outside roller crossbeam (12) is equipped with outside roller (14), the base plate of outside roller crossbeam (12) connects screw I (13), the hypomere of worm gear screw elevator III (11) screw rod is threaded in screw I (13), drives worm gear screw elevator III (11) by reducing motor III (10)；
Described inwall roller mechanism (7) is arranged on crossbeam (3), pass according to processed pipe 58, adjusting the position of inwall roller, the up-down adjustment device of the inwall roller group of inwall roller mechanism (7) is made up of inwall roller slide (53), inwall roller support (49), reducing motor VI (52), worm gear screw elevator VI (51), screw II (50)；At crossbeam (3) upper installing inwall roller support (49), equipped with the worm gear screw elevator VI (51) driven by reducing motor VI (52) on inwall roller support (49) end face, inwall roller slide (53) along slide is fitted in the bottom chute of inwall roller support (49), the top board of inwall roller slide (53) connects screw II (50), the bottom of inwall roller slide (53) connects inwall roller and adjusts seat (54), inwall roller adjusts the bottom of seat (54) and is provided with inwall roller (57), the screw rod hypomere of worm gear screw elevator VI (51) is threaded in screw II (50).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620031876.7U CN205732412U (en) | 2016-01-13 | 2016-01-13 | One gives roll forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620031876.7U CN205732412U (en) | 2016-01-13 | 2016-01-13 | One gives roll forming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205732412U true CN205732412U (en) | 2016-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620031876.7U Withdrawn - After Issue CN205732412U (en) | 2016-01-13 | 2016-01-13 | One gives roll forming device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205732412U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105499339A (en) * | 2016-01-13 | 2016-04-20 | 大连三高集团有限公司 | Pre-bending and forming device |
| CN109772950A (en) * | 2019-02-02 | 2019-05-21 | 杨元恒 | A kind of metal welding pipe forming apparatus and its operating method with common roller |
-
2016
- 2016-01-13 CN CN201620031876.7U patent/CN205732412U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105499339A (en) * | 2016-01-13 | 2016-04-20 | 大连三高集团有限公司 | Pre-bending and forming device |
| CN109772950A (en) * | 2019-02-02 | 2019-05-21 | 杨元恒 | A kind of metal welding pipe forming apparatus and its operating method with common roller |
| CN109772950B (en) * | 2019-02-02 | 2020-08-21 | 杨元恒 | Metal welded pipe forming device with common roller and operation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161130 Effective date of abandoning: 20180112 |
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| AV01 | Patent right actively abandoned |