EP0918581A1 - Method of forming a metal sheet and panel comprising such a sheet - Google Patents
Method of forming a metal sheet and panel comprising such a sheetInfo
- Publication number
- EP0918581A1 EP0918581A1 EP97932924A EP97932924A EP0918581A1 EP 0918581 A1 EP0918581 A1 EP 0918581A1 EP 97932924 A EP97932924 A EP 97932924A EP 97932924 A EP97932924 A EP 97932924A EP 0918581 A1 EP0918581 A1 EP 0918581A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sheet
- panel
- corrugating
- troughs
- corrugations
- 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
- B21D13/00—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form
- B21D13/10—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form into a peculiar profiling shape
-
- 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
- B21D13/00—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form
- B21D13/04—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form by rolling
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/08—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of metal, e.g. sheet metal
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
- E04C2/32—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure formed of corrugated or otherwise indented sheet-like material; composed of such layers with or without layers of flat sheet-like material
- E04C2/326—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure formed of corrugated or otherwise indented sheet-like material; composed of such layers with or without layers of flat sheet-like material with corrugations, incisions or reliefs in more than one direction of the element
Definitions
- This invention is concerned with forming a panel which comprises at least one sheet of metal. This invention is also concerned with such a panel.
- sheets of metal can be strengthened by shaping them into corrugations, thereby enabling thinner sheets to be used for certain applications.
- corrugated roofing sheets are widely used.
- the invention provides a method of forming a panel which comprises at least one sheet of metal, characterised in that the method comprises corrugating the sheet with corrugations which extend parallel to one another in a first direction, and corrugating the already corrugated sheet with corrugations which extend parallel to one another in a second direction, said second direction being inclined at an angle of at least 10° to said first direction.
- a method according to the invention produces a panel which has parallel upstanding ridges with troughs between them, these troughs having reentrant side walls. It is found that the panel has increased stiffness in all directions in the plane of the panel and can be bent into complex shapes.
- the method does not require expensive tooling. All that is required is one or two sets (depending on whether the same set is used for both corrugating operations) of corrugating rollers.
- Such corrugating rollers are well-known as they are used to corrugate metal sheets for, eg, roofing and to corrugate cardboard. Such rollers have sinusoidal ridges extending along their surfaces.
- a set of rollers comprises an upper and a lower roller whose ridges mesh with one another and press a sheet into corrugations as it passes through the nip between the rollers.
- said angle between the corrugating directions can be as low as 10°, it is preferred that, in a method according to the invention, said angle is at least 30°, eg 45°, and, most preferably, said angle is substantially 90°.
- the corrugating may be carried out by passing the sheet between two sets of corrugating rollers which are arranged to produce similar corrugations, ie the depth and spacing of the ridges on the corrugating rollers may be the same for both corrugating operations. Indeed, the same rollers could be used for both corrugating operations. However, it is possible to vary the corrugation depth and/or spacing between the corrugating operations, eg to vary the stiffness of the panel in different directions or to produce uniform stiffness.
- Said corrugations extending in the first direction may be generally sinusoidal, when viewed in transverse cross- section. It is, however, possible to use corrugations with other cross-sections.
- a method according to the invention may also comprise a final pressing or rolling operation to reduce the thickness of the panel. This causes the reentrant side walls to increase their inclination.
- the invention also provides a panel which comprises at least one sheet of metal, characterised in that the sheet is formed into a plurality of generally parallel upstanding ridges separated by troughs, the troughs having reentrant side walls, wherein each ridge varies in width along its length in a regular manner and varies in height along the length of the ridge with the greatest height occurring at the narrowest points of the ridge, and wherein said troughs vary in depth along their length with the greatest depth occurring at the narrowest points of the troughs.
- a panel according to the invention has increased stiffness in all directions in the plane of the panel and can be bent into complex shapes. Although a panel according to the invention has a very complex shape, it can be manufactured very simply by a method in accordance with the invention.
- the variation in height of the ridges is substantially sinusoidal.
- the troughs must conform to the width and height variations of the ridges.
- said troughs vary in depth along their length with the greatest depth occurring at the narrowest points of the troughs.
- the lowest points of the ridges may be lower than the highest points of the troughs, but, of course, such lowest and highest points are displaced from one another longitudinally of the ridges or troughs.
- the ridges may each have a crest which is substantially flat in a direction transverse to the length of the ridge.
- a panel according to the invention may be formed from, eg, aluminium or an alloy thereof or steel.
- the sheets may have a thickness of at least 125 microns. Thicknesses of 0.3 to lmm have been found to be appropriate but, clearly, depending on the metal involved, there is a limit to the thickness of sheet which can be formed into a panel according to the invention.
- Figure 1 is an enlarged plan view of a portion of the illustrative panel
- Figure 2 is a cross-sectional view taken on the line II-II in Figure 1;
- Figure 3 is a cross-sectional view taken on the line III-III in Figure 1;
- Figure 4 is a cross-sectional view taken on the line IV-IV in Figure 1;
- Figure 5 is a cross-sectional view of a portion of a heat shield incorporating the illustrative panel.
- Figure 6 is a computer scan of a portion of the illustrative panel.
- the illustrative method forms the illustrative panel 10 by shaping a sheet of metal 12, the sheet being made of aluminium alloy and being 0.3mm in thickness. At the beginning of the illustrative method, the sheet 12 is planar.
- the illustrative method firstly, comprises corrugating the sheet 12 with corrugations which extend parallel to one another in a first direction. These corrugations are of conventional form, being sinusoidal in transverse cross-section, and extend parallel to one another in the first direction across the sheet 12. This stage of the illustrative method is carried out by passing the sheet 12 between corrugating rollers of conventional type.
- the illustrative method comprises corrugating the already corrugated sheet 12 with corrugations which extend parallel to one another in a second direction, said second direction being inclined at an angle of 90° to said first direction. This is carried out by passing said sheet 12 between similar corrugating rollers to those used in the first corrugating operation. However, in the second corrugating operation, the direction of travel of the sheet 12 relative to the rollers is at 90° to its direction of travel relative to the corrugating rollers in the first corrugating operation.
- the illustrative panel 10 formed by the illustrative method is shown in the drawings.
- the sheet 12 is formed into a plurality of generally parallel upstanding ridges 20 separated by troughs 22.
- the longitudinal direction of the ridges 20 represents the longitudinal direction of the corrugations formed by the first corrugating operation, ie said first direction, but these corrugations have been deformed by the second corrugating operation, preformed at 90° to the first corrugating operation in said second direction.
- the shape of the ridges 20 and troughs 22 is complex and is described below.
- Figure 1 shows, in plan view, a portion of the upper surface of the panel 10.
- the lower surface of the sheet 10, not shown, has a similar appearance to said upper surface except that the lower surface is off-set by half the spacing between adjacent ridges 20.
- Each ridge 20 has a relatively broad crest. This crest varies in height along the ridge 20 (as shown in Figure 4) having peaks 20a and hollows 20b. As shown in Figure 2, the crest of the ridge 20 is dished downwardly at its peaks 20a but, as shown in Figure 3, the crest is substantially flat at its hollows 20b. As shown in Figures 1 to 3 , the crest varies regularly in width along the ridge 20, having its greatest width at the hollows 20b and its smallest width at the peaks 20a. Figure 1 also illustrates that the narrowest points of the ridges 20 are spaced from one another along lines extending normally to the longitudinal direction of the ridges.
- the troughs 22 each have a relatively broad bottom which corresponds to the shape of the crests of the ridges 20.
- each bottom has broad peaks 22a which are substantially flat in a direction transverse to the length of the trough 22 (see Figures 2 and 3), and narrow hollows 22b which are dished upwardly.
- Figure 4 where the trough bottom of the lower side of the sheet 12 is represented by the lower side of the Figure
- the bottom varies in height along the trough 22.
- the bottom also varies regularly in width along the trough 20 (as shown in Figure 1) .
- the troughs 22 have side walls 24 (which also form the side walls of the ridges 20) . These side walls 24 are reentrant so that the troughs 22 are narrower at their mouths between the crests of the ridges than at their bottoms. Each wall 24 follows the undulations of the trough 22 and meets the crest of one of the ridges 20 and the bottom of one of the troughs 22 at an angle which is less than 90°.
- the panel 10 derives stiffness from its shape and can be bent both about lines extending longitudinally of the ridges 20 and (less easily) about lines extending transversely thereof.
- Figure 5 shows a heat shield 30 which comprises a shallow box formed by a bottom sheet 32 and a top sheet 34. Side walls of the box are formed by upwardly extending edges of the sheet 32. The top sheet 34 is turned over the edges of the bottom sheet 34 to join the sheets 32 and 34 together to close the box.
- the sheets 32 and 34 are formed of aluminium.
- the heat shield 30 also comprises two panels 10 as described in relation to Figures 1 to 4 and shown in Figure 6.
- the shield 30 also comprises a layer of thermally insulating paper 36 which is disposed between the two panels 10.
- the paper 36 may, for example be formed from the material marketed under the trade name "Fiberfrax 970".
- One of these panels 10 rests on the upper surface of the bottom sheet 32 with the paper 36 on top of it and the other panel 10 is on top of the paper 36 and beneath the lower surface of the sheets 34.
- the heat shield 30 can be utilised with either the lower surface of the sheet 32 or the upper surface of the sheet 34 facing a source of heat.
- the heat shield 30 has air trapped in it as the ridges 20 hold the sheets 32 and 34 apart. Modifications of the heat shield 30 can omit the paper 36 or may have only one panel 10 or more than two panels 10.
- the sheets 32 and 34 prevent dirt from accumulating in the folds of the panels 10.
- Figure 6 illustrates the appearance of the illustrative panel 10 as scanned by a computer.
- the figure shows the ridges 20 and the troughs 22 and also the peaks 20a and 22a and the hollows 20b and 22b.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Building Environments (AREA)
- Panels For Use In Building Construction (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9616882.8A GB9616882D0 (en) | 1996-08-10 | 1996-08-10 | Forming a panel |
GB9616882 | 1996-08-10 | ||
PCT/GB1997/001975 WO1998006517A1 (en) | 1996-08-10 | 1997-07-18 | Method of forming a metal sheet and panel comprising such a sheet |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0918581A1 true EP0918581A1 (en) | 1999-06-02 |
EP0918581B1 EP0918581B1 (en) | 2000-06-14 |
Family
ID=10798350
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97932924A Expired - Lifetime EP0918581B1 (en) | 1996-08-10 | 1997-07-18 | Heat shield panel |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0918581B1 (en) |
JP (1) | JP3233364B2 (en) |
AU (1) | AU3628997A (en) |
BR (1) | BR9711118A (en) |
DE (1) | DE69702317T2 (en) |
ES (1) | ES2147012T3 (en) |
GB (1) | GB9616882D0 (en) |
WO (1) | WO1998006517A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007017340A1 (en) | 2007-04-12 | 2008-10-23 | Federal-Mogul Sealing Systems Gmbh | Shield for thermally and acoustically shielding of e.g. turbocharger, of internal combustion engine, has metallic layer implemented partially with perforations, where hole diameter of few perforations amounts to given value |
US9933483B2 (en) | 2004-11-04 | 2018-04-03 | Texas Instruments Incorporated | Addressable tap domain selection circuit with instruction and linking circuits |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6935997B2 (en) | 2000-09-14 | 2005-08-30 | Rutgers, The State University Of New Jersey | Patterning technology for folded sheet structures |
FR2892649B1 (en) * | 2005-10-27 | 2008-01-18 | Primet Sarl Ets | METHOD FOR MANUFACTURING BRAIDED METAL STRUCTURES AND PRODUCTS OBTAINED BY THE PROCESS |
DK200600137A (en) * | 2005-12-21 | 2007-06-22 | Petersen Peder Vejsig | Heat exchanger in thin profiled sheets |
JP5705402B2 (en) * | 2008-02-08 | 2015-04-22 | ニチアス株式会社 | Method for producing aluminum molded plate |
KR100958733B1 (en) * | 2009-11-10 | 2010-05-18 | 주식회사 모팜 | Multilayer roll forming sheet for a heat protector and manufacturing method thereof |
US8777825B1 (en) | 2010-10-12 | 2014-07-15 | Daniel Kling | Methods for designing boxes and other types of containers |
JP2012167464A (en) * | 2011-02-14 | 2012-09-06 | Inosho:Kk | Metal panel |
JP5039233B1 (en) * | 2011-09-27 | 2012-10-03 | 三和パッキング工業株式会社 | Multi-directional corrugated material manufacturing method, multi-directional corrugated material, and corrugated material manufacturing apparatus |
JP4970626B1 (en) * | 2011-09-27 | 2012-07-11 | 三和パッキング工業株式会社 | Multi-directional corrugated material manufacturing method, multi-directional corrugated material, and corrugated material manufacturing apparatus |
CN107923298B (en) * | 2015-07-31 | 2021-08-31 | 日产自动车株式会社 | Metal plate and metal cover using the same |
JP6291106B1 (en) * | 2017-03-29 | 2018-03-14 | 三和パッキング工業株式会社 | Molded material and manufacturing method thereof |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE46795C (en) * | H. bellach in Jena. W. G. Bahnhofstrafse | Process and rolling mill for the production of double corrugated sheet metal | ||
DE240269C (en) * | 1910-08-10 | 1911-11-01 | ||
FR990018A (en) * | 1948-12-31 | 1951-09-17 | Mannesmann Roehren Werke Ag | Corrugated iron and its applications |
FR59765E (en) * | 1949-11-21 | 1954-07-19 | Mannesmann Roehren Werke Ag | Corrugated iron and its applications |
US3217845A (en) * | 1961-02-06 | 1965-11-16 | Crown Zellerbach Corp | Rigidified corrugated structure |
-
1996
- 1996-08-10 GB GBGB9616882.8A patent/GB9616882D0/en active Pending
-
1997
- 1997-07-18 AU AU36289/97A patent/AU3628997A/en not_active Abandoned
- 1997-07-18 WO PCT/GB1997/001975 patent/WO1998006517A1/en active IP Right Grant
- 1997-07-18 JP JP50946798A patent/JP3233364B2/en not_active Expired - Fee Related
- 1997-07-18 DE DE69702317T patent/DE69702317T2/en not_active Expired - Lifetime
- 1997-07-18 EP EP97932924A patent/EP0918581B1/en not_active Expired - Lifetime
- 1997-07-18 ES ES97932924T patent/ES2147012T3/en not_active Expired - Lifetime
- 1997-07-18 BR BR9711118-0A patent/BR9711118A/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO9806517A1 * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9933483B2 (en) | 2004-11-04 | 2018-04-03 | Texas Instruments Incorporated | Addressable tap domain selection circuit with instruction and linking circuits |
US10330729B2 (en) | 2004-12-07 | 2019-06-25 | Texas Instruments Incorporated | Address/instruction registers, target domain interfaces, control information controlling all domains |
US11079431B2 (en) | 2004-12-07 | 2021-08-03 | Texas Instruments Incorporated | Entering home state after soft reset signal after address match |
US11519959B2 (en) | 2004-12-07 | 2022-12-06 | Texas Instruments Incorporated | Reduced signaling interface circuit |
US11768238B2 (en) | 2004-12-07 | 2023-09-26 | Texas Instruments Incorporated | Integrated circuit with reduced signaling interface |
US11867756B2 (en) | 2004-12-07 | 2024-01-09 | Texas Instruments Incorporated | Reduced signaling interface method and apparatus |
DE102007017340A1 (en) | 2007-04-12 | 2008-10-23 | Federal-Mogul Sealing Systems Gmbh | Shield for thermally and acoustically shielding of e.g. turbocharger, of internal combustion engine, has metallic layer implemented partially with perforations, where hole diameter of few perforations amounts to given value |
Also Published As
Publication number | Publication date |
---|---|
AU3628997A (en) | 1998-03-06 |
EP0918581B1 (en) | 2000-06-14 |
BR9711118A (en) | 1999-09-08 |
DE69702317T2 (en) | 2001-02-15 |
GB9616882D0 (en) | 1996-09-25 |
DE69702317D1 (en) | 2000-07-20 |
WO1998006517A1 (en) | 1998-02-19 |
JP3233364B2 (en) | 2001-11-26 |
JP2001504393A (en) | 2001-04-03 |
ES2147012T3 (en) | 2000-08-16 |
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