EP1276575A1 - Method and apparatus for forming two flanges on a metal sheet - Google Patents
Method and apparatus for forming two flanges on a metal sheetInfo
- Publication number
- EP1276575A1 EP1276575A1 EP01936081A EP01936081A EP1276575A1 EP 1276575 A1 EP1276575 A1 EP 1276575A1 EP 01936081 A EP01936081 A EP 01936081A EP 01936081 A EP01936081 A EP 01936081A EP 1276575 A1 EP1276575 A1 EP 1276575A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rollformer
- metal sheet
- flange
- sheet
- rolls
- 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.)
- Granted
Links
Classifications
-
- 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
- B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
- B21D5/08—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles making use of forming-rollers
- B21D5/083—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles making use of forming-rollers for obtaining profiles with changing cross-sectional configuration
-
- 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
- B21D19/00—Flanging or other edge treatment, e.g. of tubes
- B21D19/02—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge
- B21D19/04—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge shaped as rollers
- B21D19/043—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge shaped as rollers for flanging edges of plates
Definitions
- the invention relates to a method for forming two opposite flanges on a metal sheet, in particular a tapered sheet, for building purposes using a rollformer, in which a first flange is formed at a first side of the rollformer, and a second flange is formed at a second side of the rollformer.
- the invention also relates to an apparatus for forming two opposite flanges on a metal sheet for building purposes.
- a rollformer having first forming rolls on one side and second forming rolls on the other side, and to form the first flange on the tapered sheet by moving the first side of the tapered sheet from beginning to end through the first forming rolls, to fetch back the panel, and to form the second flange on the tapered sheet by moving the second side of the tapered sheet from beginning to end through the second forming rolls.
- one of these objectives is reached with the method according to the preamble, in which the metal sheet is moved from a front end to a back end of the rollformer to provide the sheet with its first flange during its movement, and in that subsequently the metal sheet is moved from the back end to the front end of the rollformer to provide the sheet with its second flange during its movement.
- this method it is no longer necessary to fetch back the metal sheet with the first flange to the front end of the rollformer.
- the second flange is now directly made and the forming of the flanges is ready as soon as the sheet has passed all forming rolls of the rollformer. Since the transportation of the metal sheet from the back end to the front end of the rollformer is no longer needed, a considerable saving of time is reached by using the method according to the invention, taking in mind that a tapered sheet can be easily 20 meters or more in length.
- the metal sheet with the first flange is moved sideways so as to be able to form the second flange on the second forming rolls of the rollformer.
- the side that is provided with a flange is kept in line with the rollformer. In this way it is assured that the height of the flange formed is uniform over its length.
- an apparatus or rollformer for forming two opposite flanges on a metal sheet, in particular a tapered sheet, for building purposes, the apparatus having a front end, a back end, and two sides with successive forming rolls, in which first forming rolls on a first side of the apparatus are provided to form a first flange and second forming rolls on a second side of the apparatus are provided to form a second flange on the metal sheet, characterised in that the forming rolls on the first side of the apparatus have been provided to form the first flange starting at the front end of the apparatus, and the forming rolls on the second side of the apparatus have been provided to form the second flange starting at the back end of the apparatus.
- This apparatus can be used for the method described above, to form the flanges on the metal sheet faster than with the known apparatus.
- the first forming rolls on the first side of the rollformer are arranged in the usual way to form the first flange gradually as the metal sheet moves through the rollformer from the front end to the back end.
- the second forming rolls are arranged to form the second side of the metal sheet gradually as the metal sheet move from the back end to the front end through the rollformer.
- the sequence of the second rolls is thus reversed as compared to the conventional rollformer for tapered sheets.
- the rollformer is designed for tapered sheets, it is of course possible to form flanges on straight, rectangular sheets with it as well.
- the apparatus comprises a central, longitudinal frame having bearing shafts for the forming rolls that protrude at both sides of the frame, the bearing shafts protruding at the first side of the frame supporting the first forming rolls and the bearing shafts protruding at the second side of the frame supporting the second forming rolls.
- a slender rollformer is provided, with a longitudinal frame with driving components, and the protruding bearing shafts with the forming rolls at both sides of the frame.
- This construction also makes it possible to change the forming rolls quickly and easily when metal sheets with flanges with a different height are needed.
- the shafts are mounted in pairs vertically aligned, and all upper and/or all lower shafts are adjustable in height.
- all upper or all lower shafts should be adjustable in height, to provide the required intermediate distance between the shafts forming a pair.
- a central gearbox is provided to synchronise all shafts.
- an entree table is provided at the front end of the apparatus to guide the metal sheet, preferably the entree table being provided with guiding means, for instance guiding rolls, and push means, for instance pneumatic cylinders, to force the metal sheet against the guiding means in line with the first forming rolls.
- the entree table is placed at the front end of the rollformer to support the metal sheet before and during the forming of the first side of the metal sheet in the rollformer.
- the entree table will have bearing rolls or other movable supporting means. Since the first side of the metal sheet must be in line with the first forming rolls, preferably guiding means, such as rolls, are provided to guide the sheet. To force the sheet against the guiding rolls, push means are provided, which have to be movable since a tapered sheet varies in width.
- a shift table is provided at the back end of the apparatus to guide the metal sheet during its movement from the first side to the second side of the apparatus, preferably the shift table being provided with guiding means, for instance guiding rolls, and push means, for instance pneumatic cylinders, to force the metal sheet against the guiding means in line with the second forming rolls.
- This shift table serves the same purpose as the entree table, but than at the back end of the rollformer, to get the second side of the metal sheet in line with the second forming rolls.
- the shift table is intended to provide for the sideways movement of the metal sheet after the first flange is formed, from the first side to the second side of the rollformer.
- the guiding means of the shift table are retractable under the surface of the shift table.
- the shift table can remain on its place, and while the guiding rolls are retracted the metal sheet can be pushed from the first side to the second side, after which the guiding rolls are replaced to guide the metal sheet.
- the guiding rolls are not retractable, but the shift table as a whole with the metal sheet on it is moved from the first to the second side of the rollformer.
- Fig. 1 shows the apparatus according to the invention schematically in top view, together with a tapered sheet in various production stages.
- Fig. 2 shows the apparatus of fig. 1 in side view.
- Fig. 1 shows a rollformer 1 according to the invention in top view, together with an entree table 10 and a shift table 20. Also, a tapered metal sheet with flanges is shown in four stadiums I, II, III, IN of the manufacturing process.
- Fig. 2 shows the rollformer 1 and the tables 10, 20 in side view.
- Rollformer 1 has first bearing shafts 2 and second bearing shafts 3, supported by a frame 4 with a front end 5 and a back end 6, a first side 7 and a second side 8.
- the bearing shafts are mounted in pairs, for instance 2a, 2b, as shown in Fig. 2.
- On each pair of first bearing shafts 2 a different pair of first forming rolls is mounted.
- the consecutive pairs of forming rolls from the front end 5 to the back end 6 of the rollformer 1 form a first side of a metal sheet from a flat state into a flange.
- second bearing shafts 3 a different pair of second forming rolls is mounted, which consecutively from the back end 6 to the front end 5 form a second side of a metal sheet from a flat state into a flange.
- the entree table 10 is placed at the front end 5 of the rollformer 1 and has supporting means such as supporting rolls (not shown) for a metal sheet, and guide rolls 11 which are placed in line with the frame 4 of the rollformer 1, so a metal sheet will enter the rollformer 1 with its first side aligned with the forming rolls.
- three push devices are mounted, of which the push rolls 12 are shown. These push rolls are connected to for instance pneumatic cylinders, which will continually push a metal sheet against the guide rolls, even when the width of the sheet changes, as is the case with tapered sheets.
- the shift table 20 also has to accommodate the sideways movement of the metal sheet from the first side 7 to the second side 8 of the rollformer 1. For this, it is possible to move the shift table 20 as a whole. Alternatively, it is possible to move the metal sheet over the shift table 20 while the shift table itself remains on its place. To be able to do so, the guide rolls 21 have to be retractable under the surface of the table, so as not to hinder the movement of the sheet from the first side 7 to the second side 8 of the rollformer.
- a tapered metal sheet is shown in its forming stadium I, in which the sheet is still flat. It is placed on the entree table 10 and is pushed with its first side against the guide rolls 1 1 by the push rolls 12.
- the metal sheet is than moved in direction A into the rollformer 1 and through the rollformer in the direction B.
- the push rolls 12 move in the direction P towards the guide rolls 11, since the width of the tapered sheet diminishes towards the end of the sheet.
- the first forming rolls on the first side 7 of the rollformer 1 sequentially form a first flange on the metal sheet.
- the metal sheet is in its stadium II, in which it possesses the first flange on its first side.
- the metal sheet is than moved sideways in direction C on shift table 20, until it is at the second side 8 of the rollformer 1. There the sheet is pushed against the guide rolls 21 by the push rolls 22. This is stadium III of the metal sheet. Subsequently, the metal sheet is moved in direction D into the rollformer 1 and through the rollformer in direction E. During the movement of the sheet over the shift table 20, the push rolls 22 move in direction P away from the guide rolls 21, since during this movement the width of the tapered sheet increases towards the end of the sheet. As the sheet is moved through the rollformer 1 , the second forming rolls on the second side 8 of the rollformer 1 sequentially form a second flange on the metal sheet.
- the rollformer When the sheet leaves the rollformer 1, it has reached its fourth and last stadium IV and can be carried off in direction F. Though not shown, it will be clear that the rollformer according to the invention has moving means such as moving rolls to move a metal sheet through the rollformer and over the tables.
- the upper bearing shafts are adjustable in vertical direction, so forming rolls with a different diameter can be used. All bearing shafts are synchronised using a central gear box. It will be understood that, though the rollformer is designed to form flanges on tapered metal sheets, the rollformer can equally well be used to form flanges on straight, rectangular metal sheets. Also it will be understood that, though the forming in Fig. 1 is shown to start with the wide side of a tapered sheet, it is possible to start will the narrow side.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Forging (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01936081A EP1276575B1 (en) | 2000-03-31 | 2001-03-14 | Method and apparatus for forming two flanges on a metal sheet |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00201161A EP1138405A1 (en) | 2000-03-31 | 2000-03-31 | Method and apparatus for forming two flanges on a metal sheet |
EP00201161 | 2000-03-31 | ||
PCT/EP2001/002963 WO2001074510A1 (en) | 2000-03-31 | 2001-03-14 | Method and apparatus for forming two flanges on a metal sheet |
EP01936081A EP1276575B1 (en) | 2000-03-31 | 2001-03-14 | Method and apparatus for forming two flanges on a metal sheet |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1276575A1 true EP1276575A1 (en) | 2003-01-22 |
EP1276575B1 EP1276575B1 (en) | 2004-06-09 |
Family
ID=8171279
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00201161A Withdrawn EP1138405A1 (en) | 2000-03-31 | 2000-03-31 | Method and apparatus for forming two flanges on a metal sheet |
EP01936081A Expired - Lifetime EP1276575B1 (en) | 2000-03-31 | 2001-03-14 | Method and apparatus for forming two flanges on a metal sheet |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00201161A Withdrawn EP1138405A1 (en) | 2000-03-31 | 2000-03-31 | Method and apparatus for forming two flanges on a metal sheet |
Country Status (10)
Country | Link |
---|---|
EP (2) | EP1138405A1 (en) |
CN (1) | CN1228155C (en) |
AT (1) | ATE268654T1 (en) |
AU (1) | AU2001262098A1 (en) |
CZ (1) | CZ20023182A3 (en) |
DE (1) | DE60103751T2 (en) |
ES (1) | ES2219526T3 (en) |
PL (1) | PL357825A1 (en) |
SK (1) | SK14012002A3 (en) |
WO (1) | WO2001074510A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1331048A1 (en) | 2002-01-28 | 2003-07-30 | Corus Bausysteme GmbH | Metal sheet for building purposes, and method and apparatus for making such sheets |
WO2004099522A1 (en) | 2003-05-05 | 2004-11-18 | Corus Bausysteme Gmbh | Standing seam profiled metal sheet and method for the production thereof |
DE102011052539A1 (en) * | 2011-08-09 | 2013-02-14 | Data M Sheet Metal Solutions Gmbh | Roll profiling device with guide rail and clamping carriage for the defined guidance of a workpiece and associated method |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE433710C (en) * | 1982-05-06 | 1985-10-28 | Per Ove Pettersson | RULLFALSMASKIN |
US4811587A (en) * | 1987-10-28 | 1989-03-14 | Knudson Gary Art | Apparatus for making panels |
DE19612239C2 (en) * | 1996-03-27 | 2000-11-02 | Richard Back | Device for producing a sheet metal profiled at the edge, in particular from a flat sheet |
-
2000
- 2000-03-31 EP EP00201161A patent/EP1138405A1/en not_active Withdrawn
-
2001
- 2001-03-14 PL PL01357825A patent/PL357825A1/en unknown
- 2001-03-14 WO PCT/EP2001/002963 patent/WO2001074510A1/en active IP Right Grant
- 2001-03-14 CZ CZ20023182A patent/CZ20023182A3/en unknown
- 2001-03-14 ES ES01936081T patent/ES2219526T3/en not_active Expired - Lifetime
- 2001-03-14 AT AT01936081T patent/ATE268654T1/en not_active IP Right Cessation
- 2001-03-14 CN CN01807627.0A patent/CN1228155C/en not_active Expired - Fee Related
- 2001-03-14 SK SK1401-2002A patent/SK14012002A3/en unknown
- 2001-03-14 DE DE60103751T patent/DE60103751T2/en not_active Expired - Fee Related
- 2001-03-14 EP EP01936081A patent/EP1276575B1/en not_active Expired - Lifetime
- 2001-03-14 AU AU2001262098A patent/AU2001262098A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO0174510A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN1422192A (en) | 2003-06-04 |
EP1138405A1 (en) | 2001-10-04 |
ATE268654T1 (en) | 2004-06-15 |
PL357825A1 (en) | 2004-07-26 |
WO2001074510A1 (en) | 2001-10-11 |
AU2001262098A1 (en) | 2001-10-15 |
ES2219526T3 (en) | 2004-12-01 |
DE60103751D1 (en) | 2004-07-15 |
CN1228155C (en) | 2005-11-23 |
EP1276575B1 (en) | 2004-06-09 |
SK14012002A3 (en) | 2003-02-04 |
CZ20023182A3 (en) | 2003-05-14 |
DE60103751T2 (en) | 2004-12-02 |
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