US3490260A - Devices in sheet bending machines - Google Patents

Devices in sheet bending machines Download PDF

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Publication number
US3490260A
US3490260A US648327A US3490260DA US3490260A US 3490260 A US3490260 A US 3490260A US 648327 A US648327 A US 648327A US 3490260D A US3490260D A US 3490260DA US 3490260 A US3490260 A US 3490260A
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United States
Prior art keywords
roller
upper roller
bending
rollers
sheet
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Expired - Lifetime
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US648327A
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English (en)
Inventor
Per Samme Valentin Lindmark
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Individual
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Individual
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Publication date
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Publication of US3490260A publication Critical patent/US3490260A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/14—Bending sheet metal along straight lines, e.g. to form simple curves by passing between rollers

Definitions

  • the present invention relates to sheet bending machines and more particularly to a device in a sheet bending machine having at least two rotatable and co-operative rollers, preferably an upper roller and at least one lower roller for allowing a round-bending of a piece of sheet material introduced between said rollers.
  • the main object of the present invention is to provide a device in which the finished piece of sheet material which has become bent into :a more or less completely closed form around one of the rollers, i.e. the upper roller, can be removed from the machine in a simpler and faster way than hitherto known.
  • Another object of the invention also is to provide for a handling of non-treated as well as finished sheet workpieces by means of simpler and thus less expensive facilities and in an easier and more rational way.
  • a device is substantially distinguished in that the roller around which the work-piece bends during the bending operation, particularly the upper roller, is journalled in the machine frame axially slidable so as to be drawn away or retracted completely out of the bending zone and thus provide for an easy and quick removal of the sheet work-piece bent into a more or less completely closed shape.
  • FIGS. 1 and 2 are diagrammatic elevational views of a machine of the invention with the upper roller in operative and retracted position, respectively;
  • FIG. 3 is a perspective view of a machine with another embodiment of the support device for the upper roller.
  • a sheet bending machine is provided with an upper roller 1 which is rotatably journalled although stationary in transverse direc- 3,490,260 Patented Jan. 20, 1970 tion and which co-operates with two rotatable lower rollers 5 which are transversely adjustable relatively to said stationary upper roller 1 so as to provide for a desired rounding or bending around said upper roller of a piece of sheet material (not illustrated) between said rollers I and 5.
  • the bearings of the ends of the rollers are mounted in bearing supports 3 and 4 in the frame of the machine.
  • the device according to the present invention is designed in such a way that the upper roller is journalled axially slidable and thus can be withdrawn completely or substantially out of the bending zone.
  • the retractable upper roller 1 in its end opposite the direction of removal is journalled and releasably supported in the bearing support 3, and in its end facing the direction of removal said roller 1 is journalled in the bearing support 4 by a support device 2 which is adapted to keep said roller in proper alignment while in operative position.
  • a support device 2 which is adapted to keep said roller in proper alignment while in operative position.
  • said support device 2 comprises rolls 6 travelling in rails 7 and is operated by a nut 8 travelling on a screw 9, which is driven by a motor 10.
  • This embodiment is very effective and dependable but requires a rather great length of the machine frame in the longitudinal direction, about twice the length of the rollers.
  • the support device comprises two lower rolls 11 and 12 on which the retractable roller 1 rests and which are rotatably mounted in the bearing support 4 on axes at right angles to the axis of said roller 1, and one upper roll 13 also rotatably mounted in said support 4 on an axis at right angles to the axis of the roller and engaging same from above at a point between said lower rolls 11 and 12.
  • said upper roll 13 is power-driven, e.g. by an electric motor 14 for retracting and replacing said roller 1.
  • An essential advantage with the device according to the present invention which cannot be obtained in machines of prior art is the feature that owing to the fact that the upper roller 1 can be completely removed from the bending zone, plane and non-treated sheet blanks can be delivered directly onto the lower rollers 5 by means .of a travelling crane or a truck.
  • the upper roller 1 then can be moved back into the working position, after which the lower rollers 5 which are movable in transverse direction, are brought closer to the upper roller 1 so as to perform the desired bending action. After finishing the bending operation the upper roller 1 is again retracted, now out of the work-piece which is substantially closed therearound.
  • the travelling crane or another lifting device for the final removal of the finished workpiece from the machine it is possible to use again the travelling crane or another lifting device, but mostly it is still easier if the operator rolls the work-piece away manually from the lowerrollers 5.
  • a sheet bending machine having a frame and at least two rotatable and co-operative rollers, preferably an upper roller and at least one lower roller for providing a round-bending of a sheet material work-piece introduced between said rollers, characterized in that the roller around which the work-piece bends into a substantially closed shape during the bending operation is journalled in the machine frame for axially slidable movement so as to be retracted completely out of the bending zone and thus provide for an easy and quick removal of the bent sheet material work-piece.
  • a machine according to claim 1 in which the retractable roller in its end facing the direction of axial withdrawal out of the bending zone, is jonrnalled in a support device, which is adapted to keep said roller in proper alignment while in operative position and provides for a longitudinal or axial movement of said roller.
  • said support device comprises two lower rolls on which the retractable roller rests and which are rotatably mounted in the machine frame on axes at right angles to the axis of said roller, and one upper roll also rotatably mounted in the frame on an axis at right angles to the axis of the retractable roller and engaging same from above at a point between said lower rolls, said upper roll, being power driven for retracting and replacing said roller.
  • a sheet bending machine having a frame and at least two rotatble and cooperative rollers, preferably an upper roller and at least one lower roller for eifeeting a round-bending of a sheet material work-piece introduced between said rollers, said work-piece being bent around said roller into a substantially closed configuration
  • said device comprising, means on said frame journalling said upper roller for movement along its own axis so as to be retracted completely out of the bending zone to provide for an easy, quick removal of the bent sheet material work-piece, said journalling means keeping said upper roller in proper alignment while in the operative position and providing for a longitudinal or axial movement of said upper roller thereafter, said journalling means further including two lower rolls on which the upper roller rests said rolls being rotatably mounted in the machine frame on axes on right angles to the axis of said upper roller, and one upper roll also rotatably mounted in the frame on an axis at right angles to the axis of the upper roller and engaging same from above at a point between said lower rolls, one of said

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
US648327A 1966-11-23 1967-06-23 Devices in sheet bending machines Expired - Lifetime US3490260A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB52433/66A GB1112088A (en) 1966-11-23 1966-11-23 Improvements in sheet bending machines

Publications (1)

Publication Number Publication Date
US3490260A true US3490260A (en) 1970-01-20

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ID=10463910

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Application Number Title Priority Date Filing Date
US648327A Expired - Lifetime US3490260A (en) 1966-11-23 1967-06-23 Devices in sheet bending machines

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US (1) US3490260A (de)
BE (1) BE700615A (de)
CH (1) CH462758A (de)
GB (1) GB1112088A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2323464A1 (fr) * 1975-09-10 1977-04-08 Ultra Centrifuge Nederland Nv Procede et machine pour cintrer une bande plate sous une forme cylindrique
US4056961A (en) * 1976-11-08 1977-11-08 Jamison Eugene M Method and apparatus for forming cylindrical spacers from metal blanks

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112091547B (zh) * 2020-10-13 2021-07-30 安徽玄同机电科技有限公司 一种用于薄皮环形件卷绕的卷绕机构

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US119716A (en) * 1871-10-10 Improvement in machines for bending tires
US1943153A (en) * 1930-07-11 1934-01-09 Wirth Alfred Roller straightening machine
US2432666A (en) * 1946-05-17 1947-12-16 Isenberg Sheet metal bending rolls
US2592948A (en) * 1947-11-26 1952-04-15 Birdsboro Steel Foundry & Mach Roller leveler
US3208260A (en) * 1960-08-18 1965-09-28 United Eng Foundry Co Rolling mill

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US119716A (en) * 1871-10-10 Improvement in machines for bending tires
US1943153A (en) * 1930-07-11 1934-01-09 Wirth Alfred Roller straightening machine
US2432666A (en) * 1946-05-17 1947-12-16 Isenberg Sheet metal bending rolls
US2592948A (en) * 1947-11-26 1952-04-15 Birdsboro Steel Foundry & Mach Roller leveler
US3208260A (en) * 1960-08-18 1965-09-28 United Eng Foundry Co Rolling mill

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2323464A1 (fr) * 1975-09-10 1977-04-08 Ultra Centrifuge Nederland Nv Procede et machine pour cintrer une bande plate sous une forme cylindrique
US4056961A (en) * 1976-11-08 1977-11-08 Jamison Eugene M Method and apparatus for forming cylindrical spacers from metal blanks

Also Published As

Publication number Publication date
GB1112088A (en) 1968-05-01
CH462758A (de) 1968-09-30
BE700615A (de) 1967-12-01

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