US3595052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe bending device
Assignee: Mannesmann Demag AG
•
Filing: 1968-12-09
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Granted: 1971-07-27
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Expires: 1988-12-09
Abstract
Abstract A device for the continuous prebending, particularly of hotrolled pipes which are adapted to be wound on a separate reel after the prebending includes a magazine or removable block mounting a plurality of rollers for the bending operation. The magazine includes guide bars or supporting flanges which interengage with receiving structures on a drive frame containing the motor drive and speed gearing. The motor drive includes telescopic shaft elements which may be oriented in alignment with the corresponding shaft elements of the rollers and coupled thereto after the magazine is fitted to the frame. The rollers comprise calibrated bending and calibrating rollers, the latter being mounted on the magazine frame in a manner permitting adjustment of at least one of them. The pipe to be bent is advantageously fed through a hopper, or guide, and between opposed calibrated bending rollers and thereafter between pure calibrating rollers. The last group of rollers, namely the calibrating rollers are mounted in the magazine frame so that they can be moved through a wide range.
Inventors
- 👤 Gerhard Steck
- 👤 Hans-Dieter Weitermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:28
CPC Classifications
B; B21; B21D; B21D7/00; B21D7/08
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
200 words
A bending device particularly for prebending hot-rolled pipes which are to be subsequently wound on a device such as a reel, comprising a drive stand, a roller block mounted on said drive stand, a plurality of rollers having profiles corresponding to the profile of the pipe to be bent and being rotatably supported on said roller block, drive means on said drive stand connected to said rollers to rotate said rollers, said rollers including at least one calibrated bending roller set of at least three bending rollers arranged in a generally triangular pattern with an inner one over which the pipe is adapted to be bent and two outer ones engageable with the opposite side of the pipe to be bent, at least one calibrating roller set of at least two calibrating rollers arranged to contact respective opposite sides of the pipe and one of which is arranged opposite one of said outer bending rollers, and means for adjustably positioning at least an outer one of said bending rollers of said bending roller set in relation to the opposite calibrating roller for effecting preselected bending of the article passed between said bending roller and said one of said calibrating rollers.
Claim 2
Dependent Claim
200 words
A bending device particularly for prebending hot-rolled pipes which are to be subsequently wound on a device such as a reel, comprising a drive stand, a roller block mounted on said drive stand, a plurality of rollers having profiles corresponding to the profile of the pipe to be bent and being rotatably supported on said roller block, drive means on said drive stand connected to said rollers to rotate said rollers, said rollers including at least one calibrated bending roller set of at least three bending rollers arranged in a generally triangular pattern with an inner one over which the pipe is adapted to be bent and two outer ones engageable with the opposite side of the pipe to be bent, at least one calibrating roller set of at least two calibrating rollers arranged to contact respective opposite sides of the pipe and one of which is arranged opposite one of said outer bending rollers, and means for adjustably positioning at least an outer one of said bending rollers of said bending roller set in relation to the opposite calibrating roller for effecting preselected bending of the article passed between said bending roller and said one of said calibrating rollers.
Claim 3
Dependent Claim
42 words
A bending device according to claim 1 wherein said means for adjustably positioning said outer one of said bending rollers includes a lever mounting said top bending roller so that it may be moved toward and away from said opposite calibrating roller.
Claim 4
Dependent Claim
41 words
A bending device according to claim 1 including a guide mounted on said block adjacent said bending rollers and forming an inlet into which the pipe to be bent is directed and which guides the pipe in relation to said rollers.
Claim 5
Dependent Claim
209 words
A bending device particularly for prebending hot-rolled pipes which are to be subsequently wound on a device such as a reel, comprising a drive stand, a roller block mounted on said drive stand, a plurality of rollers having profiles corresponding to the profile of the pipe to be bent and being rotatably supported on said roller block, drive means on said drive stand connected to said rollers to rotate said rollers, said rollers including at least one calibrated bending roller set of at least three bending rollers arranged in a generally triangular pattern with an inner one over which the pipe is adapted to be bent and two outer ones engageable with the opposite side of the pipe to be bent, at least one calibrating roller set of at least two calibrating rollers arranged to contact respective opposite sides of the pipe, and means for adjustably positioning at least an outer one of said bending rollers of said bending roller set in a position for effecting preselected bending of the article passed between said bending roller and one of said calibrating rollers, said plurality of rollers including at least five rollers rotatably mounted on said roller block, said roller block comprising a magazine detachably positioned on said drive stand.
Claim 6
Dependent Claim
209 words
A bending device particularly for prebending hot-rolled pipes which are to be subsequently wound on a device such as a reel, comprising a drive stand, a roller block mounted on said drive stand, a plurality of rollers having profiles corresponding to the profile of the pipe to be bent and being rotatably supported on said roller block, drive means on said drive stand connected to said rollers to rotate said rollers, said rollers including at least one calibrated bending roller set of at least three bending rollers arranged in a generally triangular pattern with an inner one over which the pipe is adapted to be bent and two outer ones engageable with the opposite side of the pipe to be bent, at least one calibrating roller set of at least two calibrating rollers arranged to contact respective opposite sides of the pipe, and means for adjustably positioning at least an outer one of said bending rollers of said bending roller set in a position for effecting preselected bending of the article passed between said bending roller and one of said calibrating rollers, said plurality of rollers including at least five rollers rotatably mounted on said roller block, said roller block comprising a magazine detachably positioned on said drive stand.
Claim 7
Dependent Claim
30 words
A bending device, according to claim 1, wherein said magazine comprises a block-shaped housing having an inlet opening adjacent one end and an outlet opening spaced from said inlet opening.
Claim 8
Dependent Claim
216 words
A bending device particularly for prebending hot-rolled pipes which are to be subsequently wound on a device such as a reel, comprising a drive stand, a roller block mounted on said drive stand, a plurality of rollers having profiles corresponding to the profile of the pipe to be bent and being rotatably supported on said roller block, drive means on saId drive stand connected to said rollers to rotate said rollers, said rollers including at least one calibrated bending roller set of at least three bending rollers arranged in a generally triangular pattern with an inner one over which the pipe is adapted to be bent and two outer ones engageable with the opposite side of the pipe to be bent, at least one calibrating roller set of at least two calibrating rollers arranged to contact respective opposite sides of the pipe, and means for adjustably positioning at least an outer one of said bending rollers of said bending roller set in a position for effecting preselected bending of the article passed between said bending roller and one of said calibrating rollers, including a lever pivoted on said block and rotatably carrying one of said rollers, and hydraulic motor means connected to said lever for shifting said lever to vary the position of said one roller.
Claim 9
Dependent Claim
216 words
A bending device particularly for prebending hot-rolled pipes which are to be subsequently wound on a device such as a reel, comprising a drive stand, a roller block mounted on said drive stand, a plurality of rollers having profiles corresponding to the profile of the pipe to be bent and being rotatably supported on said roller block, drive means on saId drive stand connected to said rollers to rotate said rollers, said rollers including at least one calibrated bending roller set of at least three bending rollers arranged in a generally triangular pattern with an inner one over which the pipe is adapted to be bent and two outer ones engageable with the opposite side of the pipe to be bent, at least one calibrating roller set of at least two calibrating rollers arranged to contact respective opposite sides of the pipe, and means for adjustably positioning at least an outer one of said bending rollers of said bending roller set in a position for effecting preselected bending of the article passed between said bending roller and one of said calibrating rollers, including a lever pivoted on said block and rotatably carrying one of said rollers, and hydraulic motor means connected to said lever for shifting said lever to vary the position of said one roller.
Claim 10
Dependent Claim
221 words
A bending device particularly for prebending hot-rolled pipes which are to be subsequently wound on a device such as a reel, comprising a drive stand, a roller block mounted on said drive stand, a plurality of rollers having profiles corresponding to the profile of the pipe to be bent and being rotatably supported on said roller block, drive means on said drive stand connected to said rollers to rotate said rollers, said rollers including at least one calibrated bending roller set of at least three bending rollers arranged in a generally triangular pattern with an inner one over which the pipe is adapted to be bent and two outer ones engageable with the opposite side of the pipe to be bent, at least one calibrating roller set of at least two calibrating rollers arranged to contact respective opposite sides of the pipe, and means for adjustably positioning at least an outer one of said bending rollers of said bending roller set in a position for effecting preselected bending of the article passed between said bending roller and one of said calibrating rollers, including means for adjustably mounting at least one of said bending rollers of said calibrated bending roller set comprising a shim engageable with said block and having a portion limiting the adjustment of the others of said bending rollers.
Claim 11
Dependent Claim
221 words
A bending device particularly for prebending hot-rolled pipes which are to be subsequently wound on a device such as a reel, comprising a drive stand, a roller block mounted on said drive stand, a plurality of rollers having profiles corresponding to the profile of the pipe to be bent and being rotatably supported on said roller block, drive means on said drive stand connected to said rollers to rotate said rollers, said rollers including at least one calibrated bending roller set of at least three bending rollers arranged in a generally triangular pattern with an inner one over which the pipe is adapted to be bent and two outer ones engageable with the opposite side of the pipe to be bent, at least one calibrating roller set of at least two calibrating rollers arranged to contact respective opposite sides of the pipe, and means for adjustably positioning at least an outer one of said bending rollers of said bending roller set in a position for effecting preselected bending of the article passed between said bending roller and one of said calibrating rollers, including means for adjustably mounting at least one of said bending rollers of said calibrated bending roller set comprising a shim engageable with said block and having a portion limiting the adjustment of the others of said bending rollers.
Claim 12
Dependent Claim
218 words
A bending device particularly for prebending hot-rolled pipes which are to be subsequently wound on a device such as a reel, comprising a drive stand, a roller block mounted on said drive stand, a plurality of rollers having profiles corresponding to the profile of the pipe to be bent and being rotatably supported on said roller block, drive means on said drive stand connected to said rollers to rotate said rollers, said rollers including at least one calibrated bending roller set of at least three bending rollers arranged in a generally triangular pattern with an inner one over which the pipe is adapted to be bent and two outer ones engageable with the opposite side of the pipe to be bent, at least one calibrating roller set of at least two calibrating rollers arranged to contact respective opposite sides of the pipe, and means for adjustably positioning at least an outer one of said bending rollers of said bending roller set in a position for effecting preselected bending of the article passed between said bending roller and one of said calibrating rollers, including a drive motor mounted on said stand, a plurality of drive shafts driven by said drive motor and adapted to be coupled to a respective one of each of said rollers, said shafts being telescopic.
Claim 13
Dependent Claim
218 words
A bending device particularly for prebending hot-rolled pipes which are to be subsequently wound on a device such as a reel, comprising a drive stand, a roller block mounted on said drive stand, a plurality of rollers having profiles corresponding to the profile of the pipe to be bent and being rotatably supported on said roller block, drive means on said drive stand connected to said rollers to rotate said rollers, said rollers including at least one calibrated bending roller set of at least three bending rollers arranged in a generally triangular pattern with an inner one over which the pipe is adapted to be bent and two outer ones engageable with the opposite side of the pipe to be bent, at least one calibrating roller set of at least two calibrating rollers arranged to contact respective opposite sides of the pipe, and means for adjustably positioning at least an outer one of said bending rollers of said bending roller set in a position for effecting preselected bending of the article passed between said bending roller and one of said calibrating rollers, including a drive motor mounted on said stand, a plurality of drive shafts driven by said drive motor and adapted to be coupled to a respective one of each of said rollers, said shafts being telescopic.
Claim 14
Dependent Claim
128 words
A bending device particularly be prebending hot-rolled pipes which are to be subsequently wound on a device such as a reel, comprising a drive stand having a gear case thereon with a plurality of drive gears thereon, a driving motor connected to said drive gears to rotate said gears, a drive shaft affixed to each of said drive gears and extending outwardly from said gear box, said drive shafts being telescopic and having coupling means thereon adjacent the end opposite from said gear box, a magazine Detachably connected to said drive stand, and a plurality of rollers carried on said magazine each having a roller shaft projecting outwardly therefrom in alignment with a respective drive shaft and adapted to be coupled to said drive shaft for rotation thereby.
Claim 15
Dependent Claim
128 words
A bending device particularly be prebending hot-rolled pipes which are to be subsequently wound on a device such as a reel, comprising a drive stand having a gear case thereon with a plurality of drive gears thereon, a driving motor connected to said drive gears to rotate said gears, a drive shaft affixed to each of said drive gears and extending outwardly from said gear box, said drive shafts being telescopic and having coupling means thereon adjacent the end opposite from said gear box, a magazine Detachably connected to said drive stand, and a plurality of rollers carried on said magazine each having a roller shaft projecting outwardly therefrom in alignment with a respective drive shaft and adapted to be coupled to said drive shaft for rotation thereby.
Claim 16
Dependent Claim
183 words
A bending device particularly for prebending hot-rolled pipes which are to be subsequently wound on a device such as a reel, comprising a drive stand, a roller block mounted on said drive stand, a plurality of rollers for bending articles such as pipes rotatably supported on said roller block, drive means on said drive stand connected to said rollers to rotate said rollers, said rollers including at least one calibrated roller bending set of rollers between which the article to be bent is fed, at least one subsequent set of calibrating rollers, and means for adjustably positioning at least one of said bending rollers of said bending roller set for effecting preselected bending of the article passed therebetween, said plurality of rollers including at least five rollers rotatably mounted on said roller block, said roller block comprising a magazine detachably positioned on said drive stand and said drive stand includes a pair of spaced supporting bars each having a recess therein, said magazine having a complementary magazine support bar with a projection adapted to extend into the recess of said stand support bar.
Claim 17
Dependent Claim
183 words
A bending device particularly for prebending hot-rolled pipes which are to be subsequently wound on a device such as a reel, comprising a drive stand, a roller block mounted on said drive stand, a plurality of rollers for bending articles such as pipes rotatably supported on said roller block, drive means on said drive stand connected to said rollers to rotate said rollers, said rollers including at least one calibrated roller bending set of rollers between which the article to be bent is fed, at least one subsequent set of calibrating rollers, and means for adjustably positioning at least one of said bending rollers of said bending roller set for effecting preselected bending of the article passed therebetween, said plurality of rollers including at least five rollers rotatably mounted on said roller block, said roller block comprising a magazine detachably positioned on said drive stand and said drive stand includes a pair of spaced supporting bars each having a recess therein, said magazine having a complementary magazine support bar with a projection adapted to extend into the recess of said stand support bar.
Claim 18
Dependent Claim
184 words
A bending device particularly for prebending hot-rolled pipes which are to be subsequently wound on a device such as a reel, comprising a drive stand, a roller block mounted on said drive stand, a plurality of rollers for bending articles such as pipes rotatably supported on said roller block, drive means on said drive stand connected to said rollers to rotate said rollers, said rollers including at least one calibrated bending roller set of rollers between which the article to be bent is fed, at least one subsequent set of calibrating rollers, means for adjustably positioning at least one of said bending rollers of said bending roller set for effecting preselected bending of the article passed therebetween, a supporting frame carrying said drive stand, an ejection pawl carried on said supporting stand, and means for shifting said drive stand with said roller block to a position to engage said roller block with said pawl and for thereafter further shifting said drive shaft stand with said roller block engaged with said pawl in order to effect ejection of said roller block from said drive stand.
Claim 19
Dependent Claim
184 words
A bending device particularly for prebending hot-rolled pipes which are to be subsequently wound on a device such as a reel, comprising a drive stand, a roller block mounted on said drive stand, a plurality of rollers for bending articles such as pipes rotatably supported on said roller block, drive means on said drive stand connected to said rollers to rotate said rollers, said rollers including at least one calibrated bending roller set of rollers between which the article to be bent is fed, at least one subsequent set of calibrating rollers, means for adjustably positioning at least one of said bending rollers of said bending roller set for effecting preselected bending of the article passed therebetween, a supporting frame carrying said drive stand, an ejection pawl carried on said supporting stand, and means for shifting said drive stand with said roller block to a position to engage said roller block with said pawl and for thereafter further shifting said drive shaft stand with said roller block engaged with said pawl in order to effect ejection of said roller block from said drive stand.
Claim 20
Dependent Claim
165 words
A bending device particularly by prebending hot-rolled pipes which are to be subsequently wound on a device such as a reel, comprising a drive stand having a gear case thereon with a plurality of drive gears thereon, a driving motor connected to said drive gears to rotate said gears, a drive shaft affixed to each of said drive gears and extending outwardly from said gear box, said drive shafts being telescopic and having coupling means thereon adjacent the end opposite from said gear box, a magazine detachably connected to said drive stand, a plurality of rollers carried on said magazine each having a roller shaft projecting outwardly therefrom in alignment with a respective drive shaft and adapted to be coupled to said drive shaft for rotation thereby, and slide means on said magazine engageable with said frame permitting transverse displacement of said magazine in respect to said stand in a direction normal to said drive shafts after said drive shafts are uncoupled from said rollers.
Claim 21
Dependent Claim
165 words
A bending device particularly by prebending hot-rolled pipes which are to be subsequently wound on a device such as a reel, comprising a drive stand having a gear case thereon with a plurality of drive gears thereon, a driving motor connected to said drive gears to rotate said gears, a drive shaft affixed to each of said drive gears and extending outwardly from said gear box, said drive shafts being telescopic and having coupling means thereon adjacent the end opposite from said gear box, a magazine detachably connected to said drive stand, a plurality of rollers carried on said magazine each having a roller shaft projecting outwardly therefrom in alignment with a respective drive shaft and adapted to be coupled to said drive shaft for rotation thereby, and slide means on said magazine engageable with said frame permitting transverse displacement of said magazine in respect to said stand in a direction normal to said drive shafts after said drive shafts are uncoupled from said rollers.
Claim 22
Dependent Claim
232 words
A bending device particularly by prebending hot-rolled pipes which are to be subsequently wound on a device such as a reel, comprising a drive stand having a gear case thereon with a plurality of drive gears thereon, a driving motor connected to said drive gears to rotate said gears, a drive shaft affixed to each of said drive gears and extending outwardly from said gear box, said drive shafts being telescopic and having coupling means thereon adjacent the end opposite from said gear box, a magazine dEtachably connected to said drive stand, and a plurality of rollers carried on said magazine each having a roller shaft projecting outwardly therefrom in alignment with a respective drive shaft and adapted to be coupled to said drive shaft for rotation thereby, a mounting base for said drive stand upon which said drive stand is mounted and slide means defined between said mounting base and said drive stand and said magazine to permit transverse movement of said magazine, and a pawl on said supporting base engageable with said magazine for preventing movement thereof relative to said drive stand to cause ejection thereof when said drive stand is moved relative to said base after said pawl is engaged with said magazine and means engageable with said drive stand to displace said drive stand on said base and to cause ejection of said magazine from said drive stand.
Claim 23
Dependent Claim
232 words
A bending device particularly by prebending hot-rolled pipes which are to be subsequently wound on a device such as a reel, comprising a drive stand having a gear case thereon with a plurality of drive gears thereon, a driving motor connected to said drive gears to rotate said gears, a drive shaft affixed to each of said drive gears and extending outwardly from said gear box, said drive shafts being telescopic and having coupling means thereon adjacent the end opposite from said gear box, a magazine dEtachably connected to said drive stand, and a plurality of rollers carried on said magazine each having a roller shaft projecting outwardly therefrom in alignment with a respective drive shaft and adapted to be coupled to said drive shaft for rotation thereby, a mounting base for said drive stand upon which said drive stand is mounted and slide means defined between said mounting base and said drive stand and said magazine to permit transverse movement of said magazine, and a pawl on said supporting base engageable with said magazine for preventing movement thereof relative to said drive stand to cause ejection thereof when said drive stand is moved relative to said base after said pawl is engaged with said magazine and means engageable with said drive stand to displace said drive stand on said base and to cause ejection of said magazine from said drive stand.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |