EP1136144A1 - Braking press for hot rolled or cold rolled steel sheet and brake assembly for such press - Google Patents

Braking press for hot rolled or cold rolled steel sheet and brake assembly for such press Download PDF

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Publication number
EP1136144A1
EP1136144A1 EP01400620A EP01400620A EP1136144A1 EP 1136144 A1 EP1136144 A1 EP 1136144A1 EP 01400620 A EP01400620 A EP 01400620A EP 01400620 A EP01400620 A EP 01400620A EP 1136144 A1 EP1136144 A1 EP 1136144A1
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EP
European Patent Office
Prior art keywords
fabric
braking
plate
felt
upper plate
Prior art date
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Granted
Application number
EP01400620A
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German (de)
French (fr)
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EP1136144B1 (en
Inventor
Michel Goffaux
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Silac SAS
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La Chaignaud Ets
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Publication of EP1136144A1 publication Critical patent/EP1136144A1/en
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    • 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 or cold rolled sheets and a braking assembly for such press.
  • the present invention relates to a press braking system for regulating the forward speed of sheets previously laminated and cut to the desired width before they are rolled up on a storage cylinder for processing later.
  • a brake press is necessary because, at the outlet of the rolling mill, the initial sheet has significant variations in thickness on throughout its width and over its entire length.
  • Figure 1 represents so schematic a set 10 for the longitudinal cutting of sheets laminated, this includes, from upstream to downstream, an unwinding system 12, a cutting system 14, a brake press 16 and a winding system 18.
  • a sheet 20 of large width wound on a cylinder 22 is first unrolled, at the location of the unrolling system 12, the cylinder 22 being rotated while the sheet 20 advances on drive rollers 24.
  • this sheet 20 passes through the system of cutting 14 which is provided with longitudinal cutting means 26 such as a disc cutter (circular knives), blades or a shears so that at the output, the sheet 20 is composed of sheets 20 ′ and 20 " forming two ribbons narrower than the sheet 20.
  • longitudinal cutting means 26 such as a disc cutter (circular knives), blades or a shears
  • the following station constitutes the subject of the present invention, except namely a brake press 16, which, for each cut sheet 20 'and 20 ", regulates the advancement speed of this sheet according to the variation of its thickness over its length and over its width.
  • This braking allows to roll up the cut sheets 20 'and 20 "in good conditions at level of the next station consisting of the winding system 18 which rolls up these sheets 20 'and 20 "on a winding cylinder 28 can later be used to store the sheet metal it carries.
  • FIG 2 is schematically illustrated a press braking 40 of the prior art.
  • This press 40 has a frame (not shown) on which are mounted an upper plate 42 and a plate lower 44 between which a cut sheet runs (sheet metal tape) 20 ' (20 ") in a longitudinal direction parallel to the plane of Figure 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 in order to allow a reconciliation between said plates from an open position to a closed position.
  • Each of the plates 42 and 44 has a free face forming an essentially horizontal working face (42a and 44a) turned in direction of the other platform and provided with braking means intended for brake 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 entirely covered with a stretched felt 46 forming a brake shoe, the lateral edges 46a of the felt 46 being blocked.
  • This blocking is carried out either by a pneumatic or hydraulic system 48, such as pliers tires, either by a mechanical system.
  • a pneumatic or hydraulic system 48 such as pliers tires
  • FIG. 2 The example of such mechanical system is illustrated in FIG. 2 in the form of a roller 50 of energizing and blocking on at least part of the periphery from which the corresponding side edge 46a is wound, the roller 50 being immobilized in an angular position so that it exerts a certain traction on the felt 46.
  • said braking means include, in addition to a felt 52 stretched and blocked (by a system pneumatic or hydraulic 48 or by a mechanical system - rollers 50-), an inflatable membrane 54 disposed in a housing 44b formed in the lower plate 44 and open in the direction of the upper plate 42.
  • This inflatable membrane 54 is intended, when it is put 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 normal conditions of use, the membrane 54 protrudes from the housing 44b, beyond the face of work 44a.
  • this brake press 40 of the prior art does not not achieve this goal since the edges 52a of the felt lower 52 are attached to fixed parts of the brake press 40. Consequently, in spite of a pressure, even important, inflatable membrane 54, the felt 52 can hardly deform depending on the thickness variations of the 20 '(20 ") sheet
  • the braking presses of the prior art have a a number of drawbacks: the braking is not very or not very effective and the used felts wear out very quickly.
  • the object of the present invention is to provide a press for braking allowing to put under pressure a maximum of points of the surface of the cut sheet, preferably all points on its surface.
  • the brake press for sheets rolled according to the present invention comprises a frame on which are mounted a tray upper and lower horizontal plates essentially presenting a working face provided with braking means, at least one of the two trays being movable relative to the frame to allow a approximation between said plates from an open position towards a closed position, at least one sheet being able to slide in a longitudinal direction between said upper plates and lower so that, in said closed position, said means braking of said upper and lower plates are in contact with said sheet in order to brake said sheet.
  • This brake press is characterized in that said plate lower forms an open housing in the direction of said upper plate, in that said braking means of the lower plate comprise a inflatable membrane arranged in said housing projecting out of said housing beyond said working face, a thin plate overcoming said lower plate by resting freely on said membrane, and a braking member fixed to a braking face of the thin plate facing towards the upper plate.
  • the felt of the lower plate can follow the variations in sheet thickness to brake.
  • most of the points on the underside of the sheet are in contact with the felt of the lower plate, so each area of the sheet surface is under pressure, even small, between the plates upper and lower press.
  • the present invention also aims to provide a brake assembly for an art type brake press anterior illustrated in figure 2 in order to make it conform to the press according to the present invention (Figure 3).
  • the braking assembly according to the present invention is characterized in that it includes first braking means intended to equip said lower plate, said first means of braking comprising a thin plate intended to overcome said plate lower by resting freely on said membrane, and a braking fixed on a braking face of the thin plate turned in direction of the upper plate when said thin plate overcomes said lower shelf.
  • the brake press 140 comprises an upper plate 142 movable in vertical translation by relative to the frame and a lower plate 144 fixed relative to the frame, these two plates being horizontal.
  • the working face 142a (face lower) of the upper plate 142 is covered with a canvas 160 surmounted by a fabric 162 provided with gripping elements turned in direction of the lower plate ("VELCRO" type fabric, brand filed) and a felt 146.
  • the canvas 160 is a relatively resistant fabric (for example a thick fabric 2.4 mm thick made of 50% cotton and 50% polyamide and having a surface mass of the order of 1 Kg / m 2 ) covering minus 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 clamps, or by a mechanical system
  • the fabric 162 is advantageously sewn onto the canvas 160.
  • This fabric 162 has gripping elements preferably having a mushroom shape, this shape allowing a very good attachment of the felt as explained below.
  • Fabric 162 should also have a high resistance to mechanical, thermal and chemical.
  • the felt 146 forms the brake pad of the upper plate 142 and is detachably retained on the fabric 162 thanks to the cooperation between the fibers making up this felt 146 and the gripping elements cited above.
  • 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 preferably being substantially equal to that of the sheet 20 '(20 ") at brake.
  • a change of felt may be necessary when this the latter is worn or when it is not suitable for the 20 '(20 ") sheet to be braked, or because of the width of this sheet 20 '(20 "), or because of the nature of this sheet 20 '(20 "). In the latter case, we adjust the hardness of the felt used depending on the type of sheet to be braked.
  • a felt comprising polyester, polypropylene and polyethylene, the felt having undergone, as primer, a hot thermal shock which notably modifies its hardness.
  • the lower 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.
  • the bottom of the lower plate 144 is provided with through holes 144c intended at the oil drain as will be explained later.
  • Thin plate 168 is thin sheet having a thickness about 1.5 mm and which completely covers the lower plate 144 without any fixation.
  • this thin plate 168 has a cross section and a longitudinal section in the shape of an inverted U, 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 protruding, in normal use, at 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 thickness variations in width and in length of the sheet 168.
  • the felt 152 is carried by the fabric 166 in the same manner as the felt 146 is carried by the fabric 162: the preceding remarks concerning the advantages of the fastening by the gripping elements of the fabric 166 therefore remain valid.
  • 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 bevelled. This this way, the edges bevelled wipe the longitudinal edges of the sheet loaded with oil and in filings from the cutting of this 20 '(20 ") sheet.
  • the thin plate 168 is provided with perforations 168b intended to come place at least above said housing 144b of the lower plate.
  • the thin plate 168 then forms a grid for spinning 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) is in abutment against the upper (lower) face of the 20 'or 20 "sheet.
  • the working oil can be drained 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 includes vertically adjustable stop means limiting the downward movement of the upper plate in said position of closing.
  • stop means consist for example in using cleats mounted on the lower plate.
  • the inflatable membrane 154 presses sufficiently on the thin plate 168, which is then sandwiched between the membrane inflatable 154 and sheet 20 '(20 "), to allow deformation localized from this thin plate 168 while this inflatable membrane 154 is under low air pressure.

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  • 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)

Abstract

The press comprises upper and lower stages (142, 144) the lower stage inversely cradling an inflatable membrane (154). A thin rebated plate (168) covers the membrane and supports layers of linen (164) and a gripping material (166) which cooperates with a lower felt sheet (152). On inflation of the membrane the metal laminations (20',20'') are gripped by the lower felt sheet and a second felt sheet (146) similarly attached to the top stage An Independent claim is made for a braking assembly which may be used to convert an existing press.

Description

La présente invention concerne une presse de freinage pour tôles laminées à chaud ou à froid et un ensemble de freinage pour une telle presse.The present invention relates to a brake press for hot or cold rolled sheets and a braking assembly for such press.

Plus précisément, la présente invention concerne une presse de freinage destinée à réguler la vitesse d'avancement de tôles préalablement laminées et découpées à la largeur voulue avant qu'elles ne soient enroulées sur un cylindre de stockage en vue des traitements ultérieurs. Une telle presse de freinage est nécessaire car, en sortie du laminoir, la tôle initiale présente d'importantes variations d'épaisseur sur toute sa largeur et sur toute sa longueur.More specifically, the present invention relates to a press braking system for regulating the forward speed of sheets previously laminated and cut to the desired width before they are rolled up on a storage cylinder for processing later. Such a brake press is necessary because, at the outlet of the rolling mill, the initial sheet has significant variations in thickness on throughout its width and over its entire length.

De telles presses de freinages ont déjà été proposées.Such braking presses have already been proposed.

Si l'on se réfère à la figure 1 qui représente de manière schématique un ensemble 10 pour le découpage longitudinal de tôles laminées, celui-ci comprend, d'amont en aval, un système de déroulage 12, un système de découpage 14, une presse de freinage 16 et un système d'enroulement 18.If we refer to Figure 1 which represents so schematic a set 10 for the longitudinal cutting of sheets laminated, this includes, from upstream to downstream, an unwinding system 12, a cutting system 14, a brake press 16 and a winding system 18.

Ainsi, une tôle 20 de grande largeur enroulée sur un cylindre 22 est en premier lieu déroulée, à l'emplacement du système de déroulage 12, le cylindre 22 étant mis en rotation alors que la tôle 20 avance sur des rouleaux d'entraínement 24.Thus, a sheet 20 of large width wound on a cylinder 22 is first unrolled, at the location of the unrolling system 12, the cylinder 22 being rotated while the sheet 20 advances on drive rollers 24.

Ensuite, cette tôle 20 passe au travers du système de découpage 14 qui est muni de moyens de découpage longitudinaux 26 tels qu'une découpeuse à disques (couteaux circulaires), à lames ou une cisaille de sorte qu'en sortie, la tôle 20 est composée de tôles 20' et 20" formant deux rubans moins larges que la tôle 20.Then, this sheet 20 passes through the system of cutting 14 which is provided with longitudinal cutting means 26 such as a disc cutter (circular knives), blades or a shears so that at the output, the sheet 20 is composed of sheets 20 ′ and 20 " forming two ribbons narrower than the sheet 20.

Le poste suivant constitue l'objet de la présente invention, à savoir une presse de freinage 16, qui, pour chaque tôle découpée 20' et 20", régule la vitesse d'avancée de cette tôle en fonction de la variation de son épaisseur sur sa longueur et sur sa largeur. Ce freinage permet d'enrouler les tôles découpées 20' et 20" dans de bonnes conditions au niveau du poste suivant constitué du système d'enroulement 18 qui réalise l'enroulement de ces tôles 20' et 20" sur un cylindre enrouleur 28 pouvant servir ultérieurement au stockage de la tôle qu'il porte.The following station constitutes the subject of the present invention, except namely a brake press 16, which, for each cut sheet 20 'and 20 ", regulates the advancement speed of this sheet according to the variation of its thickness over its length and over its width. This braking allows to roll up the cut sheets 20 'and 20 "in good conditions at level of the next station consisting of the winding system 18 which rolls up these sheets 20 'and 20 "on a winding cylinder 28 can later be used to store the sheet metal it carries.

Sur la figure 2 est illustrée schématiquement une presse de freinage 40 de l'art antérieur. Cette presse 40 comporte un bâti (non représenté) sur lequel sont montés un plateau supérieur 42 et un plateau inférieur 44 entre lesquels défile une tôle découpée (ruban de tôle) 20' (20") selon une direction longitudinale parallèle au plan de la figure 2 depuis la gauche vers la droite (voir flèche).In Figure 2 is schematically illustrated a press braking 40 of the prior art. This press 40 has a frame (not shown) on which are mounted an upper plate 42 and a plate lower 44 between which a cut sheet runs (sheet metal tape) 20 ' (20 ") in a longitudinal direction parallel to the plane of Figure 2 from left to right (see arrow).

Le plateau inférieur 44 est fixe tandis que le plateau supérieur 42 est mobile en translation verticale par rapport au bâti afin de permettre un rapprochement entre lesdits plateaux depuis une position d'ouverture vers une position de fermeture.The lower plate 44 is fixed while the upper plate 42 is movable in vertical translation relative to the frame in order to allow a reconciliation between said plates from an open position to a closed position.

Chacun des plateaux 42 et 44 présente une face libre formant une face de travail (42a et 44a) essentiellement horizontale tournée en direction de l'autre plateau et munie de moyens de freinage destinés à freiner ladite tôle dans ladite position de fermeture dans laquelle lesdits moyens de freinage sont en contact avec ladite tôle.Each of the plates 42 and 44 has a free face forming an essentially horizontal working face (42a and 44a) turned in direction of the other platform and provided with braking means intended for brake said sheet in said closed position in which said braking means are in contact with said sheet.

A cet effet, la face de travail 42a du plateau supérieur 42 est entièrement revêtue d'un feutre 46 tendu formant un patin de freinage, les bords latéraux 46a du feutre 46 étant bloqués. Ce blocage est réalisé soit par un système pneumatique ou hydraulique 48, tel que des pinces pneumatiques, soit par un système mécanique. L'exemple d'un tel système mécanique est illustré figure 2 sous la forme d'un rouleau 50 de mise sous tension et de blocage sur une partie au moins de la périphérie duquel le bord latéral 46a correspondant est enroulé, le rouleau 50 étant immobilisé dans une position angulaire de sorte qu'il exerce une certaine traction sur le feutre 46.To this end, the working face 42a of the upper plate 42 is entirely covered with a stretched felt 46 forming a brake shoe, the lateral edges 46a of the felt 46 being blocked. This blocking is carried out either by a pneumatic or hydraulic system 48, such as pliers tires, either by a mechanical system. The example of such mechanical system is illustrated in FIG. 2 in the form of a roller 50 of energizing and blocking on at least part of the periphery from which the corresponding side edge 46a is wound, the roller 50 being immobilized in an angular position so that it exerts a certain traction on the felt 46.

Concernant le plateau inférieur 44, lesdits moyens de freinage comprennent, outre un feutre 52 tendu et bloqué (par un système pneumatique ou hydraulique 48 ou par un système mécanique -rouleaux 50-), une membrane gonflable 54 disposée dans un logement 44b formé dans le plateau inférieur 44 et ouvert en direction du plateau supérieur 42.Regarding the lower plate 44, said braking means include, in addition to a felt 52 stretched and blocked (by a system pneumatic or hydraulic 48 or by a mechanical system - rollers 50-), an inflatable membrane 54 disposed in a housing 44b formed in the lower plate 44 and open in the direction of the upper plate 42.

Cette membrane gonflable 54 est destinée, lorsqu'elle est mise sous pression, à permettre au feutre d'appuyer sur tous les points de la surface de la tôle découpée 20' (20") qui doit être freinée. Pour cela, lorsqu'elle est gonflée dans les conditions d'utilisation normale, la membrane 54 fait saillie hors du logement 44b, au-delà de la face de travail 44a.This inflatable membrane 54 is intended, when it is put 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 normal conditions of use, the membrane 54 protrudes from the housing 44b, beyond the face of work 44a.

Toutefois, cette presse de freinage 40 de l'art antérieur ne permet pas d'atteindre cet objectif puisque les bords 52a du feutre inférieur 52 sont attachés sur des parties fixes de la presse de freinage 40. En conséquence, malgré une mise sous pression, même importante, de la membrane gonflable 54, le feutre 52 peut difficilement se déformer en fonction des variations d'épaisseur de la tôle 20' (20")However, this brake press 40 of the prior art does not not achieve this goal since the edges 52a of the felt lower 52 are attached to fixed parts of the brake press 40. Consequently, in spite of a pressure, even important, inflatable membrane 54, the felt 52 can hardly deform depending on the thickness variations of the 20 '(20 ") sheet

De plus, du fait des contraintes mécanique en traction et en compression auxquelles sont soumis les feutres 46 et 52 et du fait de la pollution des feutres par la limaille se détachant des bords latéraux de la tôle découpée 20' (20") et du liquide d'usinage, on constate rapidement une usure de ces feutres.In addition, due to mechanical stresses in tension and compression to which the felts 46 and 52 are subjected and due to the pollution of the felt by the filings coming off the lateral edges of the 20 '(20 ") cut sheet and machining fluid, you can quickly see wear of these felts.

Les autres systèmes qui ont été précédemment proposés, par exemple un freinage par courroies enroulées autour de cylindres, n'ont pas non plus permis de freiner de matière satisfaisante les tôles laminées et découpées.The other systems which have been previously proposed, by example braking by belts wrapped around cylinders, have also not allowed to brake the rolled sheets with satisfactory material and cut out.

Ainsi, les presses de freinages de l'art antérieur présentent un certain nombre d'inconvénients :le freinage est peu ou pas efficace et les feutres utilisés s'usent très rapidement.Thus, the braking presses of the prior art have a a number of drawbacks: the braking is not very or not very effective and the used felts wear out very quickly.

La présente invention a pour objectif de fournir une presse de freinage permettant de mettre sous pression un maximum de points de la surface de la tôle découpée, de préférence tous les points de sa surface.The object of the present invention is to provide a press for braking allowing to put under pressure a maximum of points of the surface of the cut sheet, preferably all points on its surface.

A cet effet, la presse de freinage pour tôles laminées selon la présente invention comporte un bâti sur lequel sont montés un plateau supérieur et un plateau inférieur essentiellement horizontaux présentant une face de travail munie de moyens de freinage, l'un au moins des deux plateaux étant mobile par rapport au bâti afin de permettre un rapprochement entre lesdits plateaux depuis une position d'ouverture vers une position de fermeture, une tôle au moins étant susceptible de défiler selon une direction longitudinale entre lesdits plateaux supérieur et inférieur de façon que, dans ladite position de fermeture, lesdits moyens de freinage desdits plateaux supérieur et inférieur soient en contact avec ladite tôle afin de freiner ladite tôle.For this purpose, the brake press for sheets rolled according to the present invention comprises a frame on which are mounted a tray upper and lower horizontal plates essentially presenting a working face provided with braking means, at least one of the two trays being movable relative to the frame to allow a approximation between said plates from an open position towards a closed position, at least one sheet being able to slide in a longitudinal direction between said upper plates and lower so that, in said closed position, said means braking of said upper and lower plates are in contact with said sheet in order to brake said sheet.

Cette presse de freinage se caractérise en ce que ledit plateau inférieur forme un logement ouvert en direction dudit plateau supérieur, en ce que lesdits moyens de freinage du plateau inférieur comprennent une membrane gonflable disposée dans ledit logement en faisant saillie hors dudit logement au-delà de ladite face de travail, une plaque mince surmontant ledit plateau inférieur en reposant librement sur ladite membrane, et un organe de freinage fixé sur une face de freinage de la plaque mince tournée en direction du plateau supérieur.This brake press is characterized in that said plate lower forms an open housing in the direction of said upper plate, in that said braking means of the lower plate comprise a inflatable membrane arranged in said housing projecting out of said housing beyond said working face, a thin plate overcoming said lower plate by resting freely on said membrane, and a braking member fixed to a braking face of the thin plate facing towards the upper plate.

De cette manière, on comprend que, grâce à la liberté de mouvement en direction verticale et à la souplesse de la plaque mince, le feutre du plateau inférieur peut suivre les variations d'épaisseur de la tôle à freiner. Ainsi, la plupart des points de la face inférieure de la tôle sont en contact avec le feutre du plateau inférieur, donc chaque zone de la surface de la tôle est sous pression, même faible, entre les plateaux supérieur et inférieur de la presse.In this way, we understand that, thanks to the freedom of vertical movement and flexibility of the thin plate, the felt of the lower plate can follow the variations in sheet thickness to brake. Thus, most of the points on the underside of the sheet are in contact with the felt of the lower plate, so each area of the sheet surface is under pressure, even small, between the plates upper and lower press.

De préférence, les avantageuses dispositions suivantes sont adoptées :

  • ledit organe de freinage comporte une étoffe reliée à ladite plaque mince et munie d'éléments agrippants tournés en direction du plateau supérieur, et un feutre couvrant au moins partiellement ladite étoffe au dessus de ladite face de freinage, ledit feutre étant composé de filaments susceptibles de coopérer avec lesdits éléments agrippants afin de retenir ledit feutre sur ladite étoffe,
  • ledit organe de freinage comporte, en outre, une toile habillant au moins une partie de ladite face de freinage de la plaque mince, ladite toile étant attachée à ladite plaque mince et ladite étoffe étant fixée sur ladite toile au moins en plusieurs points en recouvrant au moins une partie de ladite face de freinage,
  • lesdits moyens de freinage du plateau supérieur se composent d'un organe de freinage comportant une étoffe munie d'éléments agrippants tournés en direction du plateau inférieur, ladite étoffe étant fixée audit plateau supérieur en recouvrant au moins ladite face de travail dudit plateau supérieur, et un feutre couvrant au moins partiellement ladite étoffe en regard de ladite face de travail, ledit feutre étant composé de filaments susceptibles de coopérer avec lesdits éléments agrippants afin de retenir ledit feutre sur ladite étoffe,
  • ledit organe de freinage du plateau supérieur comporte, en outre, une toile habillant au moins une partie de ladite face de travail du plateau supérieur, ladite toile étant attachée audit plateau supérieur et ladite étoffe étant fixée sur ladite toile au moins en plusieurs points en recouvrant au moins une partie de ladite face de travail, et
  • lesdits moyens de freinage du plateau supérieur sont fixés audit plateau supérieur par des moyens pneumatiques.
Preferably, the following advantageous arrangements are adopted:
  • said braking member comprises a fabric connected to said thin plate and provided with gripping elements facing towards the upper plate, and a felt covering at least partially said fabric above said braking face, said felt being composed of filaments capable of cooperate with said gripping elements in order to retain said felt on said fabric,
  • said braking member further comprises a fabric covering at least part of said braking face of the thin plate, said fabric being attached to said thin plate and said fabric being fixed on said fabric at least at several points by covering at at least part of said braking face,
  • said braking means of the upper plate consist of a braking member comprising a fabric provided with gripping elements turned in the direction of the lower plate, said fabric being fixed to said upper plate by covering at least said working face of said upper plate, and a felt covering at least partially said fabric opposite said working face, said felt being composed of filaments capable of cooperating with said gripping elements in order to retain said felt on said fabric,
  • said braking member of the upper plate comprises, in addition, a fabric covering at least part of said working face of the upper plate, said fabric being attached to said upper plate and said fabric being fixed on said fabric at least at several points by covering at least part of said working face, and
  • said braking means of the upper plate are fixed to said upper plate by pneumatic means.

La présente invention a également pour objectif de fournir un ensemble de freinage pour une presse de freinage du type de l'art antérieur illustrée à la figure 2 afin de la rendre conforme à la presse selon la présente invention (figure 3).The present invention also aims to provide a brake assembly for an art type brake press anterior illustrated in figure 2 in order to make it conform to the press according to the present invention (Figure 3).

L'ensemble de freinage selon la présente invention se caractérise en ce qu'il comporte des premiers moyens de freinage destinés à équiper ledit plateau inférieur, lesdits premiers moyens de freinage comprenant une plaque mince destinée à surmonter ledit plateau inférieur en reposant librement sur ladite membrane, et un organe de freinage fixé sur une face de freinage de la plaque mince tournée en direction du plateau supérieur lorsque ladite plaque mince surmonte ledit plateau inférieur.The braking assembly according to the present invention is characterized in that it includes first braking means intended to equip said lower plate, said first means of braking comprising a thin plate intended to overcome said plate lower by resting freely on said membrane, and a braking fixed on a braking face of the thin plate turned in direction of the upper plate when said thin plate overcomes said lower shelf.

De préférence, les avantageuses dispositions suivantes sont adoptées :

  • ledit organe de freinage comporte une étoffe reliée à ladite plaque mince et munie d'éléments agrippants destinés à venir en direction du plateau supérieur, et un feutre couvrant au moins partiellement ladite étoffe au dessus de ladite face de freinage, ledit feutre étant composé de filaments susceptibles de coopérer avec lesdits éléments agrippants afin de retenir ledit feutre sur ladite étoffe,
  • ledit organe de freinage comporte, en outre, une toile habillant au moins une partie de ladite face de freinage de la plaque mince, ladite toile étant attachée à ladite plaque mince et ladite étoffe étant fixée sur ladite toile au moins en plusieurs points en recouvrant au moins une partie de ladite face de freinage,
  • la plaque mince présente une section transversale et une section longitudinale en forme de U inversé, la base du U étant destinée à recouvrir ledit logement et les branches du U étant destinées à s'étendre de part et d'autre dudit plateau inférieur,
  • l'ensemble de freinage comporte, en outre, des seconds moyens de freinage destinés à équiper ledit plateau supérieur, lesdits seconds moyens de freinage comprenant une étoffe munie d'éléments agrippants destinés à être tournés en direction du plateau inférieur, ladite étoffe étant destinée à être fixée audit plateau supérieur en recouvrant au moins ladite face de travail dudit plateau supérieur, et un feutre couvrant au moins partiellement ladite étoffe en regard de ladite face de travail, ledit feutre étant composé de filaments susceptibles de coopérer avec lesdits éléments agrippants afin de retenir ledit feutre sur ladite étoffe,
  • ledit organe de freinage comporte, en outre, une toile destinée à habiller au moins une partie de ladite face de travail du plateau supérieur, ladite toile étant attachée audit plateau supérieur et ladite étoffe étant fixée sur ladite toile au moins en plusieurs points en recouvrant au moins une partie de ladite face de travail,
  • ladite étoffe est cousue sur ladite toile,
  • ledit feutre présente des bords transversaux biseautés, et
  • ladite plaque mince est munie de perforations destinées à venir se placer au moins au-dessus dudit logement.
Preferably, the following advantageous arrangements are adopted:
  • said braking member comprises a fabric connected to said thin plate and provided with gripping elements intended to come towards the upper plate, and a felt covering at least partially said fabric above said braking face, said felt being composed of filaments capable of cooperating with said gripping elements in order to retain said felt on said fabric,
  • said braking member further comprises a fabric covering at least part of said braking face of the thin plate, said fabric being attached to said thin plate and said fabric being fixed on said fabric at least at several points by covering at at least part of said braking face,
  • the thin plate has a cross section and a longitudinal section in the shape of an inverted U, the base of the U being intended to cover said housing and the branches of the U being intended to extend on either side of said lower plate,
  • the braking assembly further comprises second braking means intended to equip said upper plate, said second braking means comprising a fabric provided with gripping elements intended to be turned in the direction of the lower plate, said fabric being intended to be fixed to said upper plate by covering at least said working face of said upper plate, and a felt covering at least partially said fabric opposite said working face, said felt being composed of filaments capable of cooperating with said gripping elements in order to retain said felt on said fabric,
  • said braking member further comprises a fabric intended to cover at least part of said working face of the upper plate, said fabric being attached to said upper plate and said fabric being fixed to said fabric at least at several points covering the at least part of said working face,
  • said fabric is sewn onto said canvas,
  • said felt has bevelled transverse edges, and
  • said thin plate is provided with perforations intended to be placed at least above said housing.

L'invention sera mieux comprise, et des caractéristiques secondaires et leurs avantages apparaítront au cours de la description d'un mode de réalisation donnée ci-dessous à titre d'exemple.The invention will be better understood, and features side effects and their advantages will become apparent during the description of an embodiment given below by way of example.

Il est entendu que la description et les dessins ne sont donnés qu'à titre indicatif et non limitatif.It is understood that the description and the drawings are not given for information only and not limitative.

Il sera fait référence aux dessins annexés, dans lesquels :

  • la figure 1, déjà décrite, est une représentation schématique longitudinale d'un ensemble pour le découpage longitudinal de tôles laminées;
  • la figure 2, déjà décrite, est une vue en en coupe longitudinale d'une presse de freinage de l'art antérieur; et,
  • la figure 3 est une vue en coupe identique à celle de la figure 2 représentant la presse de freinage selon la présente invention.
Reference will be made to the accompanying drawings, in which:
  • Figure 1, already described, is a longitudinal schematic representation of an assembly for the longitudinal cutting of laminated sheets;
  • FIG. 2, already described, is a view in longitudinal section of a braking press of the prior art; and,
  • Figure 3 is a sectional view identical to that of Figure 2 showing the brake press according to the present invention.

Sur la figure 3, les éléments identiques à ceux précédemment décrits en relation avec la figure 2 portent des références numériques augmentées d'une valeur 100.In FIG. 3, the elements identical to those previously described in connection with Figure 2 bear numerical references increased by a value of 100.

Ainsi, la presse de freinage 140 selon la présente invention comporte un plateau supérieur 142 mobile en translation verticale par rapport au bâti et un plateau inférieur 144 fixe par rapport au bâti, ces deux plateaux étant horizontaux.Thus, the brake press 140 according to the present invention comprises an upper plate 142 movable in vertical translation by relative to the frame and a lower plate 144 fixed relative to the frame, these two plates being horizontal.

En tant que moyens de freinage, la face de travail 142a (face inférieure) du plateau supérieur 142 est recouverte d'une toile 160 surmontée d'une étoffe 162 munie d'éléments agrippants tournés en direction du plateau inférieur (étoffe de type « VELCRO », marque déposée) et d'un feutre 146.As braking means, the working face 142a (face lower) of the upper plate 142 is covered with a canvas 160 surmounted by a fabric 162 provided with gripping elements turned in direction of the lower plate ("VELCRO" type fabric, brand filed) and a felt 146.

La toile 160 est un tissu relativement résistant (par exemple un tissu épais de 2.4 mm d'épaisseur réalisé à 50% en coton et à 50% en polyamide et ayant une masse surfacique de l'ordre de 1 Kg/m2) recouvrant au moins la face de travail 142a du plateau supérieur 142 auquel elle est fixée, par exemple par des systèmes pneumatiques ou hydrauliques 148 tels que des pinces pneumatiques, soit par un système mécaniqueThe canvas 160 is a relatively resistant fabric (for example a thick fabric 2.4 mm thick made of 50% cotton and 50% polyamide and having a surface mass of the order of 1 Kg / m 2 ) covering minus 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 clamps, or by a mechanical system

L'étoffe 162 est avantageusement cousue sur la toile 160. Cette étoffe 162 comporte des éléments agrippants ayant de préférence une forme de champignon, cette forme permettant un très bon accrochage du feutre comme il est expliqué ci-après. L'étoffe 162 doit également présenter une grande résistance aux contraintes mécanique, thermique et chimique.The fabric 162 is advantageously sewn onto the canvas 160. This fabric 162 has gripping elements preferably having a mushroom shape, this shape allowing a very good attachment of the felt as explained below. Fabric 162 should also have a high resistance to mechanical, thermal and chemical.

Le feutre 146 forme le patin de freinage du plateau supérieur 142 et est retenue de manière amovible sur l'étoffe 162 grâce à la coopération entre les fibres composant ce feutre 146 et les éléments agrippants précités.The felt 146 forms the brake pad of the upper plate 142 and is detachably retained on the fabric 162 thanks to the cooperation between the fibers making up this felt 146 and the gripping elements cited above.

Selon une caractéristique essentielle de la présente invention, contrairement aux feutres pouvant être utilisés dans les systèmes de freinage de l'art antérieur, ce feutre 146 n'est pas rigidifié par un enduit de matière synthétique, telle que du latex.According to an essential characteristic of the present invention, unlike the felts that can be used in braking of the prior art, this felt 146 is not stiffened by a coating of synthetic material, such as latex.

Ainsi, on garantit l'accrochage du feutre 146 sur l'étoffe 162, les fibres du feutre pouvant aisément être retenues par les éléments agrippants de l'étoffe 162.Thus, the attachment of the felt 146 to the fabric 162 is guaranteed, the felt fibers that can easily be retained by the elements grippers of the fabric 162.

De cette manière, on comprend que le changement ou le repositionnement du feutre s'effectue très rapidement.In this way, we understand that the change or the repositioning of the felt takes place very quickly.

Selon une avantageuse disposition, le feutre 146 ne s'étend pas sur toute la largeur du plateau supérieur 142, la largeur du feutre 146 étant de préférence sensiblement égale à celle de la tôle 20' (20") à freiner.According to an advantageous arrangement, the felt 146 does not extend over the entire width of the upper plate 142, the width of the felt 146 preferably being substantially equal to that of the sheet 20 '(20 ") at brake.

Un changement de feutre peut être rendu nécessaire lorsque ce dernier est usé ou lorsqu'il ne convient pas à la tôle 20' (20") à freiner, soit du fait de la largeur de cette tôle 20' (20"), soit du fait de la nature de cette tôle 20' (20"). Dans ce dernier cas, on adapte en effet la dureté du feutre utilisé en fonction du type de tôle à freiner.A change of felt may be necessary when this the latter is worn or when it is not suitable for the 20 '(20 ") sheet to be braked, or because of the width of this sheet 20 '(20 "), or because of the nature of this sheet 20 '(20 "). In the latter case, we adjust the hardness of the felt used depending on the type of sheet to be braked.

De manière avantageuse, on utilise un feutre comprenant du polyester, du polypropylène et du polyéthylène, le feutre ayant subi, à titre d'apprêt, un choc thermique à chaud qui modifie notamment sa dureté.Advantageously, use is made of a felt comprising polyester, polypropylene and polyethylene, the felt having undergone, as primer, a hot thermal shock which notably modifies its hardness.

Selon une caractéristique essentielle de la présente invention, le plateau inférieur 144 comprend, outre des moyens de freinage similaires à ceux cités précédemment en relation avec le plateau supérieur (toile 164, étoffe 166 et feutre 152) une membrane gonflable 154 et une plaque mince 168.According to an essential characteristic of the present invention, the lower 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.

On pourrait utiliser une membrane gonflable et un plateau inférieur similaires à ceux de la figure 2. Toutefois, de manière avantageuse le fond du plateau inférieur 144 est muni de trous traversants 144c destinés à l'évacuation de l'huile comme il sera expliqué plus loin. En outre, on dispose de préférence une grille 170 sous la membrane 154 afin de faciliter l'écoulement de l'huile dans le fond du logement en direction des trous 144c.We could use an inflatable membrane and a bottom tray similar to those of FIG. 2. However, advantageously the bottom of the lower plate 144 is provided with through holes 144c intended at the oil drain as will be explained later. In addition, we preferably has a grid 170 under the membrane 154 in order to facilitate the flow of oil in the bottom of the housing towards holes 144c.

La plaque mince 168 est de la tôle mince présentant une épaisseur d'environ 1,5 mm et qui recouvre entièrement le plateau inférieur 144 sans aucune fixation.Thin plate 168 is thin sheet having a thickness about 1.5 mm and which completely covers the lower plate 144 without any fixation.

Afin de rester positionnée au dessus du logement 144a du plateau inférieur 144, cette plaque mince 168 présente une section transversale et une section longitudinale en forme de U inversé, la base du U recouvrant, en le refermant, ledit logement 144a et les branches du U s'étendant de part et d'autre des parois latérales verticales dudit plateau inférieur. Ainsi, les branches précitées limitent le décalage horizontal de la plaque mince 168 par rapport au plateau inférieur 144.In order to remain positioned above the housing 144a of the tray lower 144, this thin plate 168 has a cross section and a longitudinal section in the shape of an inverted U, 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.

La membrane gonflable 154 dépassant, en utilisation normale, au delà du bord supérieur du plateau inférieur 144, c'est-à-dire au-delà de la face de travail 144a, la plaque mince 168 repose sur cette membrane gonflable 154. Comme cette plaque mince 168 est relativement fine, elle est apte à se déformer localement, sous la pression de la membrane gonflable 154, pour suivre les variations d'épaisseur en largeur et en longueur de la tôle 168.The inflatable membrane 154 protruding, in normal use, at 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. As this thin plate 168 is relatively thin, it is able to deform locally under the pressure of the membrane inflatable 154, to follow thickness variations in width and in length of the sheet 168.

C'est la face supérieure de la plaque mince 168,qui forme une face de freinage168a, qui supporte la toile 164, l'étoffe 166 et le feutre 152. L'étoffe 166 est cousue sur la toile 164, l'ensemble étant fixé sur la plaque mince 168 au moyens de systèmes pneumatiques ou hydrauliques 148 tels que ceux précités en relation avec la figure 2.It is the upper face of the thin plate 168, which forms a face 168a, which supports the fabric 164, the fabric 166 and the felt 152. The fabric 166 is sewn onto the canvas 164, the assembly being fixed on the plate thin 168 by means of pneumatic or hydraulic systems 148 such as those mentioned above in relation to FIG. 2.

Le feutre 152 est porté par l'étoffe 166 de la même manière que le feutre 146 est porté par l'étoffe 162:les remarques précédentes concernant les avantages de la fixation par les éléments agrippants de l'étoffe 166 restent donc valables.The felt 152 is carried by the fabric 166 in the same manner as the felt 146 is carried by the fabric 162: the preceding remarks concerning the advantages of the fastening by the gripping elements of the fabric 166 therefore remain valid.

Il apparaít donc qu'une presse de freinage de l'art antérieur comme celle de la figure 2 peut facilement être adaptée afin de former une presse de freinage selon la présente invention, en utilisant un ensemble de freinage comprenant notamment une plaque mince simplement posée sans aucune fixation sur la membrane du plateau inférieur.It therefore appears that 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 including a thin plate simply placed without any fixation on the membrane of the lower plate.

Selon une caractéristique particulièrement avantageuse, les feutres 146 et 152 présentent, entre leurs deux bords transversaux, une largeur sensiblement égale à la largeur de ladite tôle découpée 20' (20"), ces bords transversaux étant biseautés. Ce cette manière, les bords biseautés essuient les bords longitudinaux de la tôle chargés en huile et en limaille issues de la découpe de cette tôle 20' (20").According to a particularly advantageous characteristic, 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 bevelled. This this way, the edges bevelled wipe the longitudinal edges of the sheet loaded with oil and in filings from the cutting of this 20 '(20 ") sheet.

Selon une autre caractéristique particulièrement avantageuse, la plaque mince 168 est munie de perforations 168b destinées à venir se placer au moins au-dessus dudit logement 144b du plateau inférieur. La plaque mince 168 forme alors une grille d'essorage du feutre 152 lorsque la presse 140 est en position de fermeture. En effet, dans cette position de fermeture, la face libre 146a (152a) du feutre 146 (152) est en appui contre la face supérieure (inférieure) de la tôle 20' ou 20".According to another particularly advantageous characteristic, the thin plate 168 is provided with perforations 168b intended to come place at least above said housing 144b of the lower plate. The thin plate 168 then forms a grid for spinning 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) is in abutment against the upper (lower) face of the 20 'or 20 "sheet.

Dans ce cas, l'huile d'usinage peut être évacuée vers le logement 144b, le fond du logement 144b délimité dans le plateau inférieur 144a étant muni des trous 144c pour l'évacuation de cette huile en vue de son recyclage.In this case, the working oil can be drained 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.

Afin de régler la distance minimale séparant les deux plateaux supérieur et inférieur 142 et 144 dans la position de fermeture, la presse 140 comporte des moyens de butée réglables verticalement limitant le mouvement descendant du plateau supérieur dans ladite position de fermeture. De tels moyens de butée consistent par exemple à utiliser des taquets montés sur le plateau inférieur. To set the minimum distance between the two shelves upper and lower 142 and 144 in the closed position, the press 140 includes vertically adjustable stop means limiting the downward movement of the upper plate in said position of closing. Such stop means consist for example in using cleats mounted on the lower plate.

Lors de l'utilisation de la presse de freinage selon la présente invention, lorsqu'elle est en position de fermeture, les plateaux supérieur et inférieur 142 et 144 étant alors séparés de la distance minimale, on constate que la membrane gonflable 154 appuie suffisamment sur la plaque mince 168, qui est alors prise en sandwich entre la membrane gonflable 154 et la tôle 20' (20"), pour permettre une déformation localisée de cette plaque mince 168 alors que cette membrane gonflable 154 est sous une faible pression d'air.When using the brake press according to this invention, when in the closed position, the upper plates and lower 142 and 144 then being separated from the minimum distance, we notes that the inflatable membrane 154 presses sufficiently on the thin plate 168, which is then sandwiched between the membrane inflatable 154 and sheet 20 '(20 "), to allow deformation localized from this thin plate 168 while this inflatable membrane 154 is under low air pressure.

Ainsi on constate qu'une pression d'air de 5 Pa est suffisante alors qu'une pression de cinq à dix fois plus importante utilisée pour gonfler la membrane 54 de la presse 40 de l'art antérieur ne permettait pas de freiner correctement la tôle 20' (20").So we see that an air pressure of 5 Pa is sufficient then that a pressure five to ten times greater used to inflate the membrane 54 of press 40 of the prior art did not allow brake the 20 '(20 ") sheet correctly.

Claims (21)

Presse de freinage (140) pour tôles laminées comportant un bâti sur lequel sont montés un plateau supérieur (142) et un plateau inférieur (144) essentiellement horizontaux présentant une face de travail (142a, 144a) munie de moyens de freinage, l'un au moins des deux plateaux étant mobile par rapport au bâti afin de permettre un rapprochement entre lesdits plateaux depuis une position d'ouverture vers une position de fermeture, une tôle (20', 20") au moins étant susceptible de défiler selon une direction longitudinale entre lesdits plateaux supérieur et inférieur (142, 144) de façon que, dans ladite position de fermeture, lesdits moyens de freinage desdits plateaux supérieur et inférieur soient en contact avec ladite tôle (20', 20") afin de freiner ladite tôle, ledit plateau inférieur (144) formant un logement (144b) ouvert en direction dudit plateau supérieur (142), lesdits moyens de freinage du plateau inférieur (144) comprennant une membrane gonflable (154) disposée dans ledit logement (144b), une plaque mince (168) surmontant ledit plateau inférieur (144) en reposant librement sur ladite membrane (154), et un organe de freinage fixé sur une face de freinage (168a) de la plaque mince (168) tournée en direction du plateau supérieur (142),
   caractérisée en ce que ladite membrane gonflable (164) est disposée dans ledit logement (144b) en faisant saillie hors dudit logement (144b) au-delà de ladite face de travail (144a), et en ce que ladite plaque mince (168) recouvre ledit logement (144b) et s'étend de part et d'autre dudit plateau inférieur (144).Brake press (140) for laminated sheets comprising a frame on which are mounted an upper plate (142) and a lower plate (144) essentially horizontal having a working face (142a, 144a) provided with braking means, one at least two plates being movable relative to the frame in order to allow a rapprochement between said plates from an open position towards a closed position, at least one sheet (20 ′, 20 ") being able to travel in a longitudinal direction between said upper and lower plates (142, 144) so that, in said closed position, said braking means of said upper and lower plates are in contact with said sheet (20 ', 20 ") in order to brake said sheet, said lower plate (144) forming a housing (144b) open towards said upper plate (142), said braking means of the lower plate (144) comprising an inflatable membrane (154) dis placed in said housing (144b), a thin plate (168) surmounting said lower plate (144) resting freely on said membrane (154), and a braking member fixed to a braking face (168a) of the thin plate ( 168) turned towards the upper plate (142),
characterized in that said inflatable membrane (164) is disposed in said housing (144b) projecting from said housing (144b) beyond said working face (144a), and in that said thin plate (168) covers said housing (144b) and extends on either side of said lower plate (144). Presse selon la revendication 1, caractérisée en ce que ledit organe de freinage comporte une étoffe (166) reliée à ladite plaque mince (168) et munie d'éléments agrippants tournés en direction du plateau supérieur (142), et un feutre (152) couvrant au moins partiellement ladite étoffe (166) au dessus de ladite face de freinage (168a), ledit feutre (152) étant composé de filaments susceptibles de coopérer avec lesdits éléments agrippants afin de retenir ledit feutre (152) sur ladite étoffe (166).Press according to claim 1, characterized in that said braking member comprises a fabric (166) connected to said thin plate (168) and provided with gripping elements facing towards the upper plate (142), and a felt (152) covering at least partially said fabric (166) above said braking face (168a), said felt (152) being composed of filaments capable of cooperating with said gripping elements in order to retain said felt (152) on said fabric (166) . Presse selon la revendication 2, caractérisée en ce que ledit organe de freinage comporte, en outre, une toile (164) habillant au moins une partie de ladite face de freinage (168a) de la plaque mince, ladite toile (164) étant attachée à ladite plaque mince (168) et ladite étoffe (166) étant fixée sur ladite toile (164) au moins en plusieurs points en recouvrant au moins une partie de ladite face de freinage (168a).Press according to claim 2, characterized in that said braking member further comprises a cloth (164) covering at least part of said braking face (168a) of the thin plate, said cloth (164) being attached to said thin plate (168) and said fabric (166) being fixed on said fabric (164) at least at several points by covering at least part of said braking face (168a). Presse selon l'une quelconque des revendications précédentes, caractérisée en ce que la plaque mince (168) présente une section transversale et une section longitudinale en forme de U inversé, la base du U recouvrant ledit logement (164) et les branches du U s'étendant de part et d'autre dudit plateau inférieur (144).Press according to any one of the preceding claims, characterized in that the thin plate (168) has a cross section and a longitudinal section in the shape of an inverted U, the base of the U covering said housing (164) and the branches of the U s 'extending on either side of said lower plate (144). Presse selon l'une quelconque des revendications précédentes, caractérisée en ce que lesdits moyens de freinage du plateau supérieur (142) se composent d'un organe de freinage comportant une étoffe (162) munie d'éléments agrippants tournés en direction du plateau inférieur (144), ladite étoffe (162) étant fixée audit plateau supérieur (142) en recouvrant au moins ladite face de travail (142a) dudit plateau supérieur (142), et un feutre (146) couvrant au moins partiellement ladite étoffe (162) en regard de ladite face de travail, ledit feutre (146) étant composé de filaments susceptibles de coopérer avec lesdits éléments agrippants afin de retenir ledit feutre (146) sur ladite étoffe (162).Press according to any one of the preceding claims, characterized in that said braking means of the upper plate (142) consist of a braking member comprising a fabric (162) provided with gripping elements turned in the direction of the lower plate ( 144), said fabric (162) being fixed to said upper plate (142) by covering at least said working face (142a) of said upper plate (142), and a felt (146) covering at least partially said fabric (162) view of said working face, said felt (146) being composed of filaments capable of cooperating with said gripping elements in order to retain said felt (146) on said fabric (162). Presse selon la revendication 5, caractérisée en ce que ledit organe de freinage comporte, en outre, une toile (160) habillant au moins une partie de ladite face de travail (142a) du plateau supérieur (142), ladite toile (160) étant attachée audit plateau supérieur (142) et ladite étoffe (162) étant fixée sur ladite toile (160) au moins en plusieurs points en recouvrant au moins une partie de ladite face de travail (142a).Press according to claim 5, characterized in that said braking member further comprises a fabric (160) covering at least part of said working face (142a) of the upper plate (142), said fabric (160) being attached to said upper plate (142) and said fabric (162) being fixed on said fabric (160) at least at several points by covering at least part of said working face (142a). Presse selon la revendication 3 ou 6, caractérisée en ce que ladite étoffe (162, 166) est cousue sur ladite toile (160, 164).Press according to claim 3 or 6, characterized in that said fabric (162, 166) is sewn onto said fabric (160, 164). Presse selon l'une quelconque des revendications précédentes, caractérisée en ce que ledit feutre (146, 152) présente, entre deux bords transversaux, une largeur sensiblement égale à la largeur de ladite tôle (20', 20"). Press according to any one of the preceding claims, characterized in that said felt (146, 152) has, between two transverse edges, a width substantially equal to the width of said sheet (20 ', 20 "). Presse selon la revendication 8 caractérisée en ce que lesdits bords transversaux du feutre (146, 152) sont biseautés.Press according to claim 8 characterized in that said transverse edges of the felt (146, 152) are bevelled. Presse selon l'une quelconque des revendications précédentes, caractérisée en ce que ladite plaque mince (168) est munie de perforations situées au moins au-dessus dudit logement (144b).Press according to any one of the preceding claims, characterized in that said thin plate (168) is provided with perforations situated at least above said housing (144b). Presse selon l'une quelconque des revendications précédentes, caractérisée en ce que lesdits moyens de freinage du plateau supérieur (142) sont fixés audit plateau supérieur (142) par des moyens pneumatiques.Press according to any one of the preceding claims, characterized in that said braking means of the upper plate (142) are fixed to said upper plate (142) by pneumatic means. Presse selon l'une quelconque des revendications précédentes, caractérisée en ce que ledit plateau supérieur (142) est mobile en translation verticale par rapport au bâti, en ce que ledit plateau inférieur (144) est fixe par rapport au bâti et en ce qu'elle comporte, en outre, des moyens de butée réglables verticalement limitant le mouvement descendant du plateau supérieur (142) dans ladite position de fermeture.Press according to any one of the preceding claims, characterized in that said upper plate (142) is movable in vertical translation relative to the frame, in that said lower plate (144) is fixed relative to the frame and in that it further comprises vertically adjustable stop means limiting the downward movement of the upper plate (142) in said closed position. Ensemble de freinage pour une presse de freinage (140) comportant un bâti sur lequel sont montés un plateau supérieur (142) et un plateau inférieur (144) essentiellement horizontaux, ledit plateau inférieur (144) formant un logement (144b) ouvert en direction dudit plateau supérieur (142) dans lequel se trouve une membrane gonflable (154) en faisant saillie hors dudit logement (144b), l'un au moins des deux plateaux étant mobile par rapport au bâti afin de permettre un rapprochement entre lesdits plateaux depuis une position d'ouverture vers une position de fermeture, une tôle (20', 20") au moins étant susceptible de défiler selon une direction longitudinale entre lesdits plateaux supérieur et inférieur (142, 144) de façon que, dans ladite position de fermeture, ladite tôle soit freinée, l'ensemble de freinage comportant en outre des premiers moyens de freinage destinés à équiper ledit plateau inférieur (144), lesdits premiers moyens de freinage comprenant une plaque mince (168) destinée à surmonter ledit plateau inférieur (144) en reposant librement sur ladite membrane (154), et un organe de freinage fixé sur une face de freinage (168a) de la plaque mince tournée en direction du plateau supérieur (142) lorsque ladite plaque mince (168) surmonte ledit plateau inférieur (144).
   caractérisé en ce que ladite membrane gonflable (164) est disposée dans ledit logement (144b) en faisant saillie hors dudit logement (144b) au-delà de ladite face de travail (144a), et en ce que ladite plaque mince (168) recouvre ledit logement (144b) et s'étend de part et d'autre dudit plateau inférieur (144).Braking assembly for a brake press (140) comprising a frame on which an upper plate (142) and a lower plate (144) are essentially horizontal, said lower plate (144) forming a housing (144b) open towards said upper plate (142) in which there is an inflatable membrane (154) projecting from said housing (144b), at least one of the two plates being movable relative to the frame in order to allow a bringing together of said plates from a position opening to a closed position, at least one sheet (20 ', 20 ") capable of running in a longitudinal direction between said upper and lower plates (142, 144) so that, in said closed position, said sheet is braked, the braking assembly further comprising first braking means intended to equip said lower plate (144), said first braking means comprising a plate e thin (168) intended to overcome said lower plate (144) by resting freely on said membrane (154), and a braking member fixed on a braking face (168a) of the thin plate turned towards the upper plate (142 ) when said thin plate (168) surmounts said lower plate (144).
characterized in that said inflatable membrane (164) is disposed in said housing (144b) projecting from said housing (144b) beyond said working face (144a), and in that said thin plate (168) covers said housing (144b) and extends on either side of said lower plate (144). Ensemble de freinage selon la revendication 13, caractérisé en ce que ledit organe de freinage comporte une étoffe (166) reliée à ladite plaque mince (168) et munie d'éléments agrippants destinés à venir en direction du plateau supérieur (142), et un feutre (152) couvrant au moins partiellement ladite étoffe (166) au dessus de ladite face de freinage (168a), ledit feutre (152) étant composé de filaments susceptibles de coopérer avec lesdits éléments agrippants afin de retenir ledit feutre (152) sur ladite étoffe (166).Braking assembly according to claim 13, characterized in that said braking member comprises a fabric (166) connected to said thin plate (168) and provided with gripping elements intended to come towards the upper plate (142), and a felt (152) covering at least partially said fabric (166) above said braking face (168a), said felt (152) being composed of filaments capable of cooperating with said gripping elements in order to retain said felt (152) on said fabric (166). Ensemble de freinage selon la revendication 14, caractérisé en ce que ledit organe de freinage comporte, en outre, une toile (164) habillant au moins une partie de ladite face de freinage (168a) de la plaque mince, ladite toile (164) étant attachée à ladite plaque mince (168) et ladite étoffe (166) étant fixée sur ladite toile (164) au moins en plusieurs points en recouvrant au moins une partie de ladite face de freinage (168a).Braking assembly according to claim 14, characterized in that said braking member further comprises a fabric (164) covering at least part of said braking face (168a) of the thin plate, said fabric (164) being attached to said thin plate (168) and said fabric (166) being fixed on said fabric (164) at least at several points by covering at least part of said braking face (168a). Ensemble de freinage selon l'une quelconque des revendications 14 et 15, caractérisé en ce que la plaque mince (168) présente une section transversale et une section longitudinale en forme de U inversé, la base du U étant destinée à recouvrir ledit logement (164) et les branches du U étant destinées à s'étendre de part et d'autre dudit plateau inférieur (144).Brake assembly according to any one of claims 14 and 15, characterized in that the thin plate (168) has a cross section and a longitudinal section in the form of an inverted U, the base of the U being intended to cover said housing (164 ) and the branches of the U being intended to extend on either side of said lower plate (144). Ensemble de freinage selon l'une quelconque des revendications 14 à 16, caractérisé en ce qu'il comporte, en outre, des seconds moyens de freinage destinés à équiper ledit plateau supérieur (142), lesdits seconds moyens de freinage comprenant une étoffe (162) munie d'éléments agrippants destinés à être tournés en direction du plateau inférieur (144), ladite étoffe (162) étant destinée à être fixée audit plateau supérieur (142) en recouvrant au moins ladite face de travail (142a) dudit plateau supérieur (142), et un feutre (146) couvrant au moins partiellement ladite étoffe (162) en regard de ladite face de travail, ledit feutre (146) étant composé de filaments susceptibles de coopérer avec lesdits éléments agrippants afin de retenir ledit feutre (146) sur ladite étoffe (162).Braking assembly according to any one of Claims 14 to 16, characterized in that it further comprises second braking means intended to equip said upper plate (142), said second braking means comprising a fabric (162 ) provided with gripping elements intended to be turned in the direction of the lower plate (144), said fabric (162) being intended to be fixed to said upper plate (142) by covering at least said working face (142a) of said upper plate ( 142), and a felt (146) covering at least partially said fabric (162) opposite said working face, said felt (146) being composed of filaments capable of cooperating with said gripping elements in order to retain said felt (146) on said fabric (162). Ensemble de freinage selon la revendication 17, caractérisé en ce que ledit organe de freinage comporte, en outre, une toile (160) destinée à habiller au moins une partie de ladite face de travail (142a) du plateau supérieur (142), ladite toile (160) étant attachée audit plateau supérieur (142) et ladite étoffe (162) étant fixée sur ladite toile (160) au moins en plusieurs points en recouvrant au moins une partie de ladite face de travail (142a).Braking assembly according to claim 17, characterized in that said braking member further comprises a fabric (160) intended to cover at least part of said working face (142a) of the upper plate (142), said fabric (160) being attached to said upper plate (142) and said fabric (162) being fixed on said fabric (160) at least at several points by covering at least part of said working face (142a). Ensemble de freinage selon la revendication 15 ou 18, caractérisé en en ce que ladite étoffe (162, 166) est cousue sur ladite toile (160, 164).Brake assembly according to claim 15 or 18, characterized in that said fabric (162, 166) is sewn onto said canvas (160, 164). Ensemble de freinage selon la revendilmaïon 15 ou 18, caractérisé en ce que ledit feutre (146, 152) présente des bords transversaux biseautés.Braking assembly as claimed in claim 15 or 18, characterized in that said felt (146, 152) has bevelled transverse edges. Ensemble de freinage selon l'une quelconque des revendications 13 à 20, caractérisé en ce que ladite plaque mince (168) est munie de perforations (168b) destinées à venir se placer au moins au-dessus dudit logement (144b).Braking assembly according to any one of claims 13 to 20, characterized in that said thin plate (168) is provided with perforations (168b) intended to be placed at least above said housing (144b).
EP01400620A 2000-03-15 2001-03-09 Braking press for hot rolled or cold rolled steel sheet and brake assembly for such press Expired - Lifetime EP1136144B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0003295 2000-03-15
FR0003295A FR2806334B1 (en) 2000-03-15 2000-03-15 BRAKING PRESS FOR HOT OR COLD ROLLED SHEET AND A BRAKING ASSEMBLY FOR SUCH A PRESS

Publications (2)

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

Family

ID=8848098

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01400620A Expired - Lifetime EP1136144B1 (en) 2000-03-15 2001-03-09 Braking press for hot rolled or cold rolled steel sheet and brake assembly for such press

Country Status (7)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1380359A2 (en) * 2002-07-02 2004-01-14 Japan Development Consultants, Inc. Tensioning apparatus for a strip coiler, endless belts for the tensioning apparatus and a device for lubricating the endless belts
EP1440742A2 (en) * 2003-01-22 2004-07-28 Calsonic Kansei Corporation Feedback controlled tension applying system

Citations (5)

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Publication number Priority date Publication date Assignee Title
FR1254223A (en) * 1959-04-18 1961-02-17 Ind De L Aluminium Sa Device for braking strips entering strip or thin sheet rolling mills
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
JPS58144042A (en) * 1982-02-18 1983-08-27 Toyonori Kimura Sheet winding tensioning device
US5722577A (en) * 1995-07-27 1998-03-03 Armstrong/Kover Kwick, Inc. Dragboard assembly

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Publication number Priority date Publication date Assignee Title
DE2836934A1 (en) * 1978-08-24 1980-03-13 Schmitz Walzmasch TAPE RETURN DEVICE FOR METAL TAPE STRIPS TO BE REWINDED
FR2654024B1 (en) * 1989-11-08 1995-04-14 Auxmet IMPROVEMENTS TO TAPE SLITTING FACILITIES.

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Publication number Priority date Publication date Assignee Title
FR1254223A (en) * 1959-04-18 1961-02-17 Ind De L Aluminium Sa Device for braking strips entering strip or thin sheet rolling mills
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
JPS58144042A (en) * 1982-02-18 1983-08-27 Toyonori Kimura Sheet winding tensioning device
US5722577A (en) * 1995-07-27 1998-03-03 Armstrong/Kover Kwick, Inc. Dragboard assembly

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Title
PATENT ABSTRACTS OF JAPAN vol. 007, no. 265 (M - 258) 25 November 1983 (1983-11-25) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1380359A2 (en) * 2002-07-02 2004-01-14 Japan Development Consultants, Inc. Tensioning apparatus for a strip coiler, endless belts for the tensioning apparatus and a device for lubricating the endless belts
EP1380359A3 (en) * 2002-07-02 2005-08-17 Japan Development Consultants, Inc. Tensioning apparatus for a strip coiler, endless belts for the tensioning apparatus and a device for lubricating the endless belts
US6978961B2 (en) 2002-07-02 2005-12-27 Japan Development Consultants, Inc. Band sheet coiling tension applying apparatus and endless belts for the band sheet coiling tension applying apparatus, and an endless belt lubricant for the band sheet coiling tension applying apparatus
EP1440742A2 (en) * 2003-01-22 2004-07-28 Calsonic Kansei Corporation Feedback controlled tension applying system
EP1440742A3 (en) * 2003-01-22 2005-02-09 Calsonic Kansei Corporation Feedback controlled tension applying system

Also Published As

Publication number Publication date
DK1136144T3 (en) 2005-01-24
FR2806334A1 (en) 2001-09-21
PT1136144E (en) 2005-02-28
EP1136144B1 (en) 2004-09-29
ATE277696T1 (en) 2004-10-15
DE60105872D1 (en) 2004-11-04
FR2806334B1 (en) 2002-08-30
DE60105872T2 (en) 2006-02-02
ES2231399T3 (en) 2005-05-16

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