EP1136144B1 - Presse de freinage pour tôles laminées à chaud ou à froid et un ensemble de freinage pour une telle presse - Google Patents

Presse de freinage pour tôles laminées à chaud ou à froid et un ensemble de freinage pour une telle presse Download PDF

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Publication number
EP1136144B1
EP1136144B1 EP01400620A EP01400620A EP1136144B1 EP 1136144 B1 EP1136144 B1 EP 1136144B1 EP 01400620 A EP01400620 A EP 01400620A EP 01400620 A EP01400620 A EP 01400620A EP 1136144 B1 EP1136144 B1 EP 1136144B1
Authority
EP
European Patent Office
Prior art keywords
braking
fabric
plate
felt
upper plate
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
EP01400620A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1136144A1 (fr
Inventor
Michel Goffaux
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.)
Silac SAS
Original Assignee
SIMTEX
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Filing date
Publication date
Application filed by SIMTEX filed Critical SIMTEX
Publication of EP1136144A1 publication Critical patent/EP1136144A1/fr
Application granted granted Critical
Publication of EP1136144B1 publication Critical patent/EP1136144B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
    • B21B39/08—Braking or tensioning arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/003—Regulation of tension or speed; Braking

Definitions

  • the present invention relates to a brake press for hot-rolled or cold-rolled sheet and a braking assembly for a such press.
  • the present invention relates to a press braking device for regulating the speed of advancement of sheets previously rolled and cut to the desired width before they are wound on a storage cylinder for processing later.
  • a braking press is necessary because, on leaving the rolling mill, the initial sheet has significant variations in thickness on all its width and over its entire length.
  • Figure 1 represents so schematic assembly 10 for the longitudinal cutting of sheets rolled, it comprises, from upstream to downstream, a peeling system 12, a cutting system 14, a braking press 16 and a winding system 18.
  • a sheet 20 of large width wound on a cylinder 22 is first unwound, at the location of the unwinding system 12, the cylinder 22 being rotated while the sheet 20 is advancing on drive rollers 24.
  • this plate 20 passes through the system of cutting 14 which is provided with longitudinal cutting means 26 such as a disk cutter (circular knives), slats or a shears so that at the outlet, the sheet 20 is composed of sheets 20 'and 20 " forming two ribbons narrower than sheet 20.
  • longitudinal cutting means 26 such as a disk cutter (circular knives), slats or a shears
  • the following item is the subject of the present invention, namely a brake press 16, which for each cut sheet 20 'and 20 ", regulates the speed of advance of this sheet according to the variation its thickness over its length and width.
  • This braking allows to wind the cut sheets 20 'and 20 "in good conditions at level of the next post consisting of the winding system 18 which performs the winding of these sheets 20 'and 20 "on a roller cylinder 28 which can be used later for storing the sheet it is carrying.
  • FIG. 2 is schematically illustrated a press of braking 40 of the prior art.
  • This press 40 comprises a frame (no represented) on which are mounted an upper plate 42 and a plate lower 44 between which scrolls a cut sheet metal (sheet metal tape) 20 ' (20 ") in a longitudinal direction parallel to the plane of FIG. 2 from left to right (see arrow).
  • the lower plate 44 is fixed while the upper plate 42 is movable in vertical translation relative to the frame to allow a bringing together said trays from an open position towards a closed position.
  • Each of the trays 42 and 44 has a free face forming a working face (42a and 44a) essentially horizontal turned into direction of the other platform and provided with braking means for braking said sheet in said closed position in which said braking means are in contact with said sheet.
  • the working face 42a of the upper plate 42 is fully coated with a felt 46 forming a braking pad, the side edges 46a of the felt 46 being blocked.
  • This block is achieved either by a pneumatic or hydraulic system 48, such as tongs pneumatic, either by a mechanical system.
  • a pneumatic or hydraulic system 48 such as tongs pneumatic
  • FIG. 2 The example of such mechanical system is illustrated in FIG. 2 in the form of a roll 50 of powering up and blocking at least part of the periphery which the corresponding lateral edge 46a is wound, the roller 50 being immobilized in an angular position so that it exerts some traction on the felt 46.
  • said braking means include, in addition to a felt tip 52 which is stretched and pneumatic or hydraulic 48 or by a mechanical system - rolls 50-), an inflatable membrane 54 disposed in a housing 44b formed in the lower plate 44 and open towards the upper plate 42.
  • This inflatable membrane 54 is intended, when placed under pressure, to allow the felt to press on all points of the surface of the cut sheet 20 '(20 ") which must be braked. when inflated under the conditions of normal use, the membrane 54 protrudes out of the housing 44b, beyond the face of work 44a.
  • this braking press 40 of the prior art does not does not achieve this goal since the edges 52a of the felt 52 are attached to fixed parts of the braking press 40. As a result, despite being under pressure, even of the inflatable membrane 54, the felt 52 can hardly be deformed depending on the thickness variations of the sheet 20 '(20 ")
  • braking presses of the prior art have a number of disadvantages: braking is not very or not efficient and used felts wear out very quickly.
  • the present invention aims to provide a press of braking to put under pressure a maximum of points of the surface of the cut sheet metal, preferably all the points of its surface.
  • the braking press for rolled sheets comprises a frame on which are mounted a tray upper and lower tray essentially horizontal presenting a working face provided with braking means, at least one of the two trays being movable relative to the frame to allow a approaching said trays from an open position towards a closed position, at least one sheet being capable of scrolling in a longitudinal direction between said upper trays and lower so that, in said closed position, said means braking said upper and lower trays are in contact with said sheet to brake said sheet.
  • This braking press is characterized in that said plate lower part forms an open housing towards said upper plate, in that said braking means of the lower plate comprise a inflatable membrane disposed in said housing projecting out said housing beyond said working face, a thin plate surmounting said lower plate resting freely on said membrane, and a braking member fixed on a braking face of the thin plate turned towards the upper plate.
  • the felt of the lower plate can follow the variations of thickness of the sheet to brake.
  • most points of the underside of the sheet are in contact with the felt of the lower plateau, so each area of the surface of the sheet is under pressure, even weak, between the trays upper and lower press.
  • the present invention also aims to provide a braking assembly for a type of art braking press former illustrated in Figure 2 to make it consistent with the press according to the present invention ( Figure 3).
  • the braking assembly characterized in that it comprises first braking means intended to equip said lower plate, said first means of braking comprising a thin plate for overcoming said board lower, resting freely on said membrane, and an organ of braking fixed on a braking face of the thin plate turned into direction of the upper plate when said thin plate overcomes said lower plateau.
  • the braking press 140 has an upper plate 142 mobile in vertical translation by relative to the frame and a lower plate 144 fixed relative to the frame, these two trays being horizontal.
  • the working face 142a (face lower) of the upper plate 142 is covered with a cloth 160 surmounted by a fabric 162 provided with gripping elements turned into bottom plate direction ("VELCRO" type fabric, brand filed) and felt 146.
  • the fabric 160 is a relatively strong fabric (for example a thick fabric of 2.4 mm thick made of 50% cotton and 50% polyamide and having a basis weight of the order of 1 Kg / m 2 ) covering less the working face 142a of the upper plate 142 to which it is fixed, for example by pneumatic or hydraulic systems 148 such as pneumatic grippers, or by a mechanical system
  • the fabric 162 is advantageously sewn onto the fabric 160.
  • fabric 162 has gripping elements preferably having a mushroom shape, this shape allowing a very good grip of the felt as explained below.
  • the fabric 162 must also have a high resistance to mechanical, thermal and chemical.
  • the felt 146 forms the braking pad of the upper plate 142 and is releasably retained on the fabric 162 through cooperation between the fibers making up this felt 146 and the gripping elements supra.
  • this felt 146 is not stiffened by a coating of synthetic material, such as latex.
  • the felt 146 does not extend over the entire width of the upper plate 142, the width of the felt 146 being preferably substantially equal to that of the sheet 20 '(20 ") to curb.
  • a change of felt may be necessary when this last is worn or when it is not suitable for the 20 '(20 ") sheet to be because of the width of this sheet 20 '(20 "), either because of the nature of this In the latter case, the felt hardness is indeed adapted used depending on the type of sheet to be braked.
  • a felt comprising polyester, polypropylene and polyethylene, the felt having undergone primer, a hot thermal shock that changes its hardness.
  • the bottom plate 144 comprises, in addition to braking means similar to those mentioned above in relation to the upper plate (canvas 164, fabric 166 and felt 152) an inflatable membrane 154 and a plate thin 168.
  • bottom plate 144 is provided with through holes 144c intended to the evacuation of oil as will be explained later.
  • a grid 170 under the membrane 154 in order to facilitate the flow of oil into the bottom of the housing towards the 144c holes.
  • the thin plate 168 is thin sheet having a thickness approximately 1.5 mm and which completely covers the lower plate 144 without any fixation.
  • this thin plate 168 has a cross section and an inverted U-shaped longitudinal section, the base of the U covering, by closing it, said housing 144a and the branches of the U extending from on either side of the vertical side walls of said lower plate. So, the aforementioned branches limit the horizontal offset of the thin plate 168 relative to the lower plate 144.
  • the inflatable membrane 154 exceeding, in normal use, to beyond the upper edge of the lower plate 144, that is to say beyond the working face 144a, the thin plate 168 rests on this membrane inflatable 154.
  • this thin plate 168 is relatively thin, it is able to deform locally, under the pressure of the membrane inflatable 154, to follow the thickness variations in width and in length of the sheet 168.
  • the fabric 166 is sewn onto the fabric 164, the assembly being fixed on the plate thin 168 by means of pneumatic or hydraulic systems 148 such as those mentioned above in connection with FIG. 2.
  • the felt 152 is carried by the fabric 166 in the same manner as the felt 146 is worn by the cloth 162: the preceding remarks the advantages of fastening by the gripping elements of the fabric 166 therefore remain valid.
  • a braking press of the prior art as that of Figure 2 can easily be adapted to form a press according to the present invention, using a set of braking comprising in particular a thin plate simply placed without any fixation on the membrane of the lower plate.
  • the felts 146 and 152 have, between their two transverse edges, a width substantially equal to the width of said cut sheet 20 '(20 "), these transverse edges being beveled. This way, the edges bevelled wipers the longitudinal edges of the sheet loaded with oil and in filings from the cutting of this sheet 20 '(20 ").
  • the thin plate 168 is provided with perforations 168b intended to come place at least above said slot 144b of the lower tray.
  • the thin plate 168 then forms a wringing grid of the felt 152 when the press 140 is in the closed position. Indeed, in this position closing, the free face 146a (152a) of the felt 146 (152) bears against the upper (lower) side of the sheet 20 'or 20 ".
  • the machining oil can be discharged to the housing 144b, the bottom of housing 144b delimited in the tray lower 144a being provided with holes 144c for the evacuation of this oil for recycling.
  • the press 140 comprises vertically adjustable abutment means limiting the downward movement of the upper plate in said position of closing.
  • abutment means consist, for example, in using cleats mounted on the lower plate.
  • the inflatable membrane 154 When using the brake press according to this invention, when in the closed position, the upper trays and lower 142 and 144 then being separated from the minimum distance, one notes that the inflatable membrane 154 sufficiently supports the thin plate 168, which is then sandwiched between the membrane inflatable 154 and the sheet 20 '(20 "), to allow deformation localized this thin plate 168 while this inflatable membrane 154 is under a low air pressure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Press Drives And Press Lines (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP01400620A 2000-03-15 2001-03-09 Presse de freinage pour tôles laminées à chaud ou à froid et un ensemble de freinage pour une telle presse Expired - Lifetime EP1136144B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0003295A FR2806334B1 (fr) 2000-03-15 2000-03-15 Presse de freinage pour toles laminees a chaud ou a froid et un ensemble de freinage pour une telle presse
FR0003295 2000-03-15

Publications (2)

Publication Number Publication Date
EP1136144A1 EP1136144A1 (fr) 2001-09-26
EP1136144B1 true EP1136144B1 (fr) 2004-09-29

Family

ID=8848098

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01400620A Expired - Lifetime EP1136144B1 (fr) 2000-03-15 2001-03-09 Presse de freinage pour tôles laminées à chaud ou à froid et un ensemble de freinage pour une telle presse

Country Status (7)

Country Link
EP (1) EP1136144B1 (pt)
AT (1) ATE277696T1 (pt)
DE (1) DE60105872T2 (pt)
DK (1) DK1136144T3 (pt)
ES (1) ES2231399T3 (pt)
FR (1) FR2806334B1 (pt)
PT (1) PT1136144E (pt)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60313251T2 (de) 2002-07-02 2008-01-03 Japan Development Consultants, Inc., Sasebo Spannvorrichtung für eine Bandhaspel
JP2004223565A (ja) * 2003-01-22 2004-08-12 Calsonic Kansei Corp フィードバックテンション装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH369090A (de) * 1959-04-18 1963-05-15 Aluminium Ind Ag Einlaufbremse an Band- und Folien-Walzgerüsten
US3559862A (en) * 1969-02-20 1971-02-02 Wood Steel Co Alan Drag wipe
US3863858A (en) * 1973-11-09 1975-02-04 Ford B Cauffiel Tensioning apparatus
DE2836934A1 (de) * 1978-08-24 1980-03-13 Schmitz Walzmasch Band-rueckzugsvorrichtung fuer aufzuwickelnde metall-bandstreifen
JPS58144042A (ja) * 1982-02-18 1983-08-27 Toyonori Kimura 薄板巻取用張力付与装置
FR2654024B1 (fr) * 1989-11-08 1995-04-14 Auxmet Perfectionnements apportes aux installations de refendage de bandes.
US5722577A (en) * 1995-07-27 1998-03-03 Armstrong/Kover Kwick, Inc. Dragboard assembly

Also Published As

Publication number Publication date
FR2806334B1 (fr) 2002-08-30
DE60105872T2 (de) 2006-02-02
EP1136144A1 (fr) 2001-09-26
FR2806334A1 (fr) 2001-09-21
ES2231399T3 (es) 2005-05-16
DE60105872D1 (de) 2004-11-04
DK1136144T3 (da) 2005-01-24
PT1136144E (pt) 2005-02-28
ATE277696T1 (de) 2004-10-15

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