US3808862A - Apparatus for forming spiral steel pipe - Google Patents

Apparatus for forming spiral steel pipe Download PDF

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Publication number
US3808862A
US3808862A US00267459A US26745972A US3808862A US 3808862 A US3808862 A US 3808862A US 00267459 A US00267459 A US 00267459A US 26745972 A US26745972 A US 26745972A US 3808862 A US3808862 A US 3808862A
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United States
Prior art keywords
steel pipe
stands
forming
rolls
movable
Prior art date
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.)
Expired - Lifetime
Application number
US00267459A
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English (en)
Inventor
Y Tanaka
Y Shimazaki
K Hagiwara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
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Nippon Steel Corp
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Filing date
Publication date
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Application granted granted Critical
Publication of US3808862A publication Critical patent/US3808862A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/12—Making tubes or metal hoses with helically arranged seams

Definitions

  • ABSTRACT An apparatus for forming spiral steel pipe by separate type forming rolls which is characterized by stands carrying rolls for forming the inner and outer surfaces of the steel pipe, the stands being each split into two portionsin a direction perpendicular to the axis of the steel pipe to be formed, one of the two portions being a fixed stand formed with a smaller length thaii th e width of material plate for the intended steel pipe and the other portion being a stand movable in the axial direction of the steel pipe to be formed.
  • the present invention relates to an apparatus for forming spiral steel pipe and more particularly to an apparatus for forming spiral steel pipe which comprises separate rolls for forming the inner and outer surfaces of the spiral pipe.
  • a typical apparatus for forming spiral steel pipe by separate forming rolls comprises, as shown in FIG. 2, a set of innersurface forming rolls l2 fitted to a stand 11 and two sets of outer-surface forming rolls 15 and 16 installed on stands 13 and 14 respectively, the three sets of rolls being in triangular arrangement, with the firstmentioned set of rolls 12 at the vertex of the triangle and the two other sets of rolls 15 and 16 at the opposed ends of the base thereof.
  • the three sets of forming'rolls 12, 15 and 16 act on the material plate 2 so as to bend it spirally.
  • the steel plate SUMMARY OF THE INVENTION The present invention obviates these problems by providing a forming apparatus which always enables a side end of a steel plate of any width to engageflwith rolls for forming the inner and outer surfaces.
  • the invention contemplates an apparatus for forming spiral steel plate by separate type forming rolls which is characterized by having stands carrying rolls for forming the inner and outer surfaces of the steel pipe, the stands being each split into two portions in a direction perpendicular to the axis of the steel pipe to be formed, one
  • the two portions being a fixed stand formed with a smaller lengththan the width of the material plate for the intended steel pipe and the other portion being a stand which is movable in the axial direction of the steel pipe to be formed.
  • An object of the present invention is to provide an apparatus for forming spiral steel pipe by bending plate material in a manner so as to inhibit abnormal deforma- 2 tion such as peaking from taking place at the welded joint.
  • Another object of the invention is to provide an apparatus for forming spiral steel pipe which is effective to prevent the abnormal deformation from ocurring at the welded joint and also simple in construction and easy to operate.
  • FIG. 1 illustrates an abnormal deformation caused by a conventional apparatus.
  • FIG. 2 is a side view of an apparatus for forming spiv thereof, the stands being disposed in two rows A and B extending in parallel in the axial direction of the pipe 1 to be formed, as a matter of functional necessity.
  • the stands 19 and 20 are in alignment with the fixed stands 17 and 18- respectively' and located on the rear side of the fixed stands 1.7 and 18, that is, on the leading side thereof with respect to the direction in which the pipe 1 being formed advances.
  • the stands 19 and 20 are 'movable up to one pitch of the outer-surface forming rolls 15 and 16 in the axial direction of the pipe 1 to beformed.
  • the shift of the movable stands 19 and 20 can be effected by a relative slide between surfaces or by means of rollers, which should be construed as non-limitative and any other desired means may be employed for the purpose.
  • Devices 21 and 22 which may be used for shifting the movable stands 19 and 20 employ a screw mechanism in this embodiment-That is, threaded drive shafts 23 and 24 extending in the longitudinal direction of the movable stands'l9 and 20 are secured to .the rear ends of the movable stands 19 and 20 respectively.
  • the drive shafts 23 and 24 are fitted with threaded sleeves 25 and 26 respectively and rotation of the sleeves will advance the movable stands 19 and 20 through the drive shafts 23 and 24. Also it is possible as a matter of course to apply a fluid pressure cylinder system to the shift adjusting devices 21 and 22. Furthermore, the lengths of the fixed stands 17 and 18 are not particularly limited so long as the said lengths are smaller than the width of the plate material for the steel pipeto be formed. If the fixed stands should be wider than the plate material,
  • the stand which carries the inner-surface forming rolls is also composed of a fixed stand and a movable stand in entirely the same manner as the stands for the outer-surface forming rolls.
  • the operation is entirely the same as the operation of the inner-surface forming rolls and the stand therefor.
  • the screw mechanism of the devices 21 and 22 for adjusting the shift of the movable stands 19 is operated to shift the movable stands l9 and 20 to an adequate position (indicated by dashed line in the illustrated embodiment) within the pitch of the outer-surface forming rolls in the axial direction of the steel pipe 1 to be formed, thereby placing the side end ⁇ of the material steel plate 2 on the outersurface forming rolls l5 and 16.
  • the direction of advance of the steel pipe being formed is denoted by a, the direction of feeding the steel plate 2, by b, and the direction of shifting the movable stands 19 and 20, by
  • the material plate for the steel pipe to be formed can be subjected to formation with a side end thereof always placed on the outer-surface forming rolls so that the abnormal deformation which is called peaking can be prevented from taking place at the pipe joint.
  • the present apparatus displays an exceedingly desirable effect in enabling the produced steel pipe to have a high quality.
  • An apparatus for forming spiral steel pipe by separate type forming rolls which is characterized by stands carrying rolls for forming the inner and outer surfaces of the steel pipe, the stands being each split into two portions in a direction perpendicular to the axis of the steel pipe to be formed, one of the two portions as a fixed stand formed with a smaller length than the width of the material plate for the intended steel pipe and the other portion as a stand movable in the axial direction of the steel pipe to be formed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
US00267459A 1971-06-30 1972-06-29 Apparatus for forming spiral steel pipe Expired - Lifetime US3808862A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1971056783U JPS5042135Y2 (enrdf_load_stackoverflow) 1971-06-30 1971-06-30

Publications (1)

Publication Number Publication Date
US3808862A true US3808862A (en) 1974-05-07

Family

ID=27942178

Family Applications (1)

Application Number Title Priority Date Filing Date
US00267459A Expired - Lifetime US3808862A (en) 1971-06-30 1972-06-29 Apparatus for forming spiral steel pipe

Country Status (4)

Country Link
US (1) US3808862A (enrdf_load_stackoverflow)
JP (1) JPS5042135Y2 (enrdf_load_stackoverflow)
CA (1) CA975223A (enrdf_load_stackoverflow)
DE (1) DE2232158C3 (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10131892A1 (de) * 2001-07-04 2003-01-23 Cts Fahrzeug Dachsysteme Gmbh Abdeckung für einen Verdeckkasten zur Aufnahme eines verstellbaren Fahrzeugdaches
US20150273550A1 (en) * 2010-01-25 2015-10-01 Keystone Tower Systems, Inc. Control system and method for tapered structure construction
US10060149B2 (en) 2010-01-25 2018-08-28 Keystone Tower Systems, Inc. Tapered spiral welded structure
US10195653B2 (en) 2011-09-20 2019-02-05 Keystone Tower Systems, Inc. Tapered structure construction

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52147329U (enrdf_load_stackoverflow) * 1976-05-06 1977-11-08
JPS6061926U (ja) * 1983-10-04 1985-04-30 マツダ株式会社 車両用駆動装置の支持構造

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3407639A (en) * 1964-10-31 1968-10-29 Kehne Lothar Device and method for forming helical tubing
US3606783A (en) * 1969-04-01 1971-09-21 Armco Steel Corp Segmented roll for forming helically corrugated pipe

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3407639A (en) * 1964-10-31 1968-10-29 Kehne Lothar Device and method for forming helical tubing
US3606783A (en) * 1969-04-01 1971-09-21 Armco Steel Corp Segmented roll for forming helically corrugated pipe

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10131892A1 (de) * 2001-07-04 2003-01-23 Cts Fahrzeug Dachsysteme Gmbh Abdeckung für einen Verdeckkasten zur Aufnahme eines verstellbaren Fahrzeugdaches
DE10131892C2 (de) * 2001-07-04 2003-06-18 Cts Fahrzeug Dachsysteme Gmbh Abdeckung für einen Verdeckkasten zur Aufnahme eines verstellbaren Fahrzeugdaches
US10895088B2 (en) 2010-01-25 2021-01-19 Keystone Tower Systems, Inc. Tapered spiral welded structure
US10060149B2 (en) 2010-01-25 2018-08-28 Keystone Tower Systems, Inc. Tapered spiral welded structure
US10189064B2 (en) * 2010-01-25 2019-01-29 Keystone Tower Systems, Inc. Control system and method for tapered structure construction
US20150273550A1 (en) * 2010-01-25 2015-10-01 Keystone Tower Systems, Inc. Control system and method for tapered structure construction
US11364527B2 (en) * 2010-01-25 2022-06-21 Keystone Tower Systems, Inc. Control system and method for tapered structure construction
US11834856B2 (en) 2010-01-25 2023-12-05 Keystone Tower Systems, Inc. Tapered spiral welded structure
US12257616B2 (en) 2010-01-25 2025-03-25 Keystone Tower Systems, Inc. Control system and method for tapered structure construction
US10195653B2 (en) 2011-09-20 2019-02-05 Keystone Tower Systems, Inc. Tapered structure construction
US10974298B2 (en) 2011-09-20 2021-04-13 Keystone Tower Systems, Inc. Tapered structure construction
US11571727B2 (en) 2011-09-20 2023-02-07 Keystone Tower Systems, Inc. Tapered structure construction
US12226813B2 (en) 2011-09-20 2025-02-18 Keystone Tower Systems, Inc. Tapered structure construction

Also Published As

Publication number Publication date
DE2232158C3 (de) 1978-10-26
JPS4813534U (enrdf_load_stackoverflow) 1973-02-15
DE2232158B2 (de) 1973-08-23
DE2232158A1 (de) 1973-01-18
CA975223A (en) 1975-09-30
JPS5042135Y2 (enrdf_load_stackoverflow) 1975-11-29

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