EP0427580B1 - Improvements to a band slitting installation - Google Patents

Improvements to a band slitting installation Download PDF

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Publication number
EP0427580B1
EP0427580B1 EP90402844A EP90402844A EP0427580B1 EP 0427580 B1 EP0427580 B1 EP 0427580B1 EP 90402844 A EP90402844 A EP 90402844A EP 90402844 A EP90402844 A EP 90402844A EP 0427580 B1 EP0427580 B1 EP 0427580B1
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EP
European Patent Office
Prior art keywords
belts
braking force
tubes
bands
installation according
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
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EP90402844A
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German (de)
French (fr)
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EP0427580A1 (en
Inventor
Jean Gaudin
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Auxmet
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Auxmet
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    • 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
    • B21C47/34—Feeding or guiding devices not specially adapted to a particular type of apparatus
    • B21C47/345—Feeding or guiding devices not specially adapted to a particular type of apparatus for monitoring the tension or advance of the material
    • B21C47/3458—Endlessly revolving chain systems
    • 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
    • B21C47/006—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only winding-up or winding-off several parallel metal bands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2555/00—Actuating means
    • B65H2555/10—Actuating means linear
    • B65H2555/11—Actuating means linear pneumatic, e.g. inflatable elements

Definitions

  • the present invention relates to strip slitting installations and it relates more particularly to a device making it possible to ensure a counter-traction uniformly distributed over a set of strips which is present at the winding, on the same drum.
  • Slitting wide strips of a generally metallic material, consists in cutting a strip appearing in reel, in the direction of the length, that is to say that one starts from a long sheet, in great width , to form leaves of the same length but in small width.
  • each of the coils formed must be separated from its neighbor by mechanical means to avoid overlapping of the bands. If this separation occurs while the bands separation takes place while the strips are under tension, the edges of the split strips are generally damaged.
  • the device of the invention is necessarily used on a line called "with loop", the kinematics of which has been known for a long time, that is to say that the shears cut the strips into a pit, before they are present to the winding.
  • This technique has the effect of facilitating the separation of the strips while they are tension free at the outlet of the pit.
  • This separation is effected by a straight or rotating separator, which is a known assembly, designated by the reference 5 in FIG. 1.
  • Band slitting systems which include a tensioning device making it possible to brake simultaneously and without friction a set of bands which is wound on the same drum, in which the necessary braking force is transmitted to two layers endless belts between which the belts pass so that the belts can have different speeds, respectively equal to the speeds of the slit belts to be braked.
  • US-A-3,735,937 which is considered to be the closest state of the art, relates to an installation for the continuous slitting of sheet metal strips using belts based on a mixture of steel and polyurethane arranged in layers.
  • the invention proposes to remedy these drawbacks by providing a strip slitting installation comprising a tensioning device making it possible to brake simultaneously and without friction a set of strips presenting themselves for winding on the same drum, in which the force necessary braking is transmitted to two layers of endless belts between which the slit belts pass-so that the belts can have different speeds, respectively equal to the speeds of the slit belts to be braked, and in which the braking force is d firstly applied directly to the belts of the upper ply via an upper clamping plate and secondly to the lower ply via a lower clamping plate, characterized in that said clamping plate is constituted by a plurality of tubes, the number of which is identical to the number of pairs of belts and the width of the upper surfaces of which is identical to that of the belts, the tubes being covered with a wear sheet of high hardness and low thickness, and in that the braking force is transmitted to the two upper and lower clamping plates by means of an inflatable chamber interposed between said lower plate and the frame
  • the wear sheet forming part of the lower clamping plate is a sheet of stainless steel and it is stretched longitudinally over the tubes forming part of this lower plate, the assembly being carried out so as to be able to easily change this wear sheet.
  • the upper braking plate is produced in the form of a hollow box in which circulates a cooling fluid, in particular water and the tubes constituting the lower clamping plate have a section straight square or rectangular and they are traversed by a coolant, such as water.
  • the clamping force is transmitted to the two braking plates, upper and lower, by means of an inflatable chamber interposed under said lower plate and the frame of the installation, this chamber preferably being of tonic form, made of a deformable polymer and supplied by a compressed air generator, the pressure of which is adjusted to vary the amount of braking at will.
  • the device object of this invention there is designated by reference 6 the device object of this invention.
  • the slit strips 8 are pinched by sets of belts 11, 11 'then deflected by a deflection roller 7 before being presented on the reel 4
  • the belts of each of the plies of belts 11 and 11 ′ are constituted by a plurality of elements of small width, for example of the order of 15 to 50 mm as required.
  • These belts are wound on pulleys 9, 10 and 9 ', 10' respectively.
  • the belts are guided laterally by any suitable known device so as to obtain correct winding.
  • the invention provides means for transmitting a braking force to the two plies of belts 11 and 11 'making it possible to brake simultaneously and without friction all of the slit bands 8 which are present at the winding on the drum 4. This braking or friction force is applied to the belts themselves, in line with the tightening of the latter on the bands 8.
  • This braking device is shown in detail in Figures 2 and 3. It essentially comprises an upper clamping plate 12 and a lower clamping plate 13, 16.
  • the upper clamping plate 12 is produced in the form of a box hollow in which a cooling fluid such as water can circulate, the lower flat surface of this box 12, located opposite the ply of belts 11 coming to apply directly on the upper face of these belts 11 to transmit the braking force by these belts with the split bands 8.
  • the lower clamping plate comprises a plurality of tubes such as 13, the number and the upper surface of which (active braking surface) are identical to those of the belts of the ply 11 ' (as can be seen in Figure 3), the tubes 13 being covered with a wear sheet 16, of great hardness, intended to transmit the braking force to the belts of the ply 11 '.
  • This braking force is applied to the tubes 13 by means of an inflatable membrane or chamber 14 interposed between the tubes 13 and the frame 17 'of the device.
  • the tubes 13 have a square cross section, the upper surface of which corresponds to that of the belts of the ply 11 'to be braked and they are traversed by a cooling fluid, in particular water.
  • the wear sheet 16 can be produced in the form of a stainless steel sheet, of small thickness, having a good coefficient of friction and a high hardness, for example of 62 HRC. This wear sheet is stretched longitudinally on the tubes 16, as can be seen in Figures 2 and 3, this assembly being carried out so as to be able to easily change this wear sheet.
  • the inflatable chamber 14 which transmits the braking force to the upper and lower braking plates is preferably toroidal in shape and is made in particular from deformable polymer.
  • This chamber can be inflated using compressed air supplied by a generator, the pressure of which is adjusted so as to vary the value of the braking at will.
  • the particular configuration of the lower braking plate allows easy adaptation to the different thicknesses of bands 8 to be braked individually and then wound on the drum 4.
  • the disadvantage mentioned above of very uneven wear of the parts making up the braking plates of the installations currently carried out, do not exist in the device according to the invention described above, thanks to the original design of the lower braking plate, and thus excellent resistance of the belts 11 and 11 ′ is obtained, making it possible to double and even triple the operating time before rectification of these belts.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
  • Adhesive Tapes (AREA)
  • Braking Arrangements (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Organic Insulating Materials (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Advancing Webs (AREA)
  • Materials For Medical Uses (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Abstract

Band slitting installation which comprises a tensioning device making it possible to brake simultaneously and without friction a group of bands being presented for winding up on one and the same drum, in which the necessary braking force is transmitted to two layers of endless belts between which the slit bands pass so that the belts can have different speeds, equal respectively to the speeds of the slit bands to be braked, characterised in that the braking force is, on the one hand, applied directly on the belts (11) of the upper layer by means of an upper holding plate (12), and, on the other hand, on the lower layer (11') by means of a lower holding plate consisting of a plurality of tubes (13) whose number and upper surface are identical to those of the belts, the tubes being covered with a wear sheet (16) of great hardness, transmitting the braking force to the belts of the lower layer. <IMAGE>

Description

La présente invention est relative aux installations de refendage de bandes et elle concerne plus particulièrement un dispositif permettant d'assurer une contre-traction uniformément répartie sur un ensemble de bandes se présentant à l'enroulement, sur un même tambour.The present invention relates to strip slitting installations and it relates more particularly to a device making it possible to ensure a counter-traction uniformly distributed over a set of strips which is present at the winding, on the same drum.

L'application la plus commune de ce dispositif est envisagée pour l'enroulement des bandes à la sortie d'une ligne de refendage de métaux, notamment de métaux qui présentent une surface fragile.The most common application of this device is envisaged for the winding of the strips at the outlet of a metal slitting line, in particular of metals which have a fragile surface.

Le refendage de bandes larges, d'un matériau généralement métallique, consiste à couper une bande se présentant en bobine, dans le sens de la longueur, c'est-à-dire qu'on part d'une feuille longue, en grande largeur, pour en constituer des feuilles de même longueur mais en faible largeur.Slitting wide strips, of a generally metallic material, consists in cutting a strip appearing in reel, in the direction of the length, that is to say that one starts from a long sheet, in great width , to form leaves of the same length but in small width.

Une installation de refendage classique comprend généralement comme indiqué sur la figure 1 du dessin annexé :

  • un dérouleur 1,
  • un déflecteur 2,
  • une cisaille par exemple à molettes multiples 3,
  • un enrouleur 4.
A conventional slitting installation generally comprises, as indicated in FIG. 1 of the attached drawing:
  • an unwinder 1,
  • a deflector 2,
  • for example a multi-wheel shear 3,
  • a reel 4.

Il est à remarquer que le fait de couper longitudinalement une bande de grande largeur ne permet pas de présenter, sur le mandrin de l'enrouleur, des bandes également tendues, ceci à cause des différences d'épaisseurs possibles entre le centre et les rives de la bande ou encore en raison des tensions internes de la bande large libérée par l'opération de coupe. D'autre part, à l'enroulement, chacune des bobines constituées doit être séparée de sa voisine par un moyen mécanique pour éviter le chevauchement des bandes. Si cette séparation se fait alors que les bandes séparation se fait alors que les bandes sont sous tension, on endommage généralement les rives des bandes refendues.It should be noted that the fact of longitudinally cutting a strip of large width does not make it possible to present, on the reel mandrel, strips also stretched, this because of the possible thickness differences between the center and the edges of the strip or else due to the internal tensions of the wide strip released by the cutting operation. On the other hand, at the winding, each of the coils formed must be separated from its neighbor by mechanical means to avoid overlapping of the bands. If this separation occurs while the bands separation takes place while the strips are under tension, the edges of the split strips are generally damaged.

D'autre part, il est très important de ne pas endommager la surface des produits mis en oeuvre sur un équipement de refendage. Si l'on peut à la rigueur utiliser une simple presse avant enrouleur pour les aciers laminés à chaud par exemple, cette technique est tout à fait exclue:

  • pour les aciers laminés à froid, de surface fragile,
  • pour tous les métaux revêtus ou peints,
  • pour les inoxydables brillants,
  • pour les aluminiums, etc...
On the other hand, it is very important not to damage the surface of the products used on a slitting equipment. If it is possible to use a simple press before rewinder for hot rolled steels for example, this technique is completely excluded:
  • for cold rolled steels with fragile surfaces,
  • for all coated or painted metals,
  • for bright stainless steels,
  • for aluminum, etc ...

Le dispositif de l'invention s'emploie nécessairement sur une ligne dite "avec boucle", dont la cinématique est connue depuis longtemps, c'est-à-dire que la cisaille débite les bandes dans une fosse, avant qu'elles ne se présentent à l'enroulement. Cette technique a pour effet de faciliter la séparation des bandes alors qu'elles sont sans tension à la sortie de la fosse. Cette séparation s'opère par un séparateur droit ou tournant, qui est un ensemble connu, désigné par la référence 5 à la figure 1.The device of the invention is necessarily used on a line called "with loop", the kinematics of which has been known for a long time, that is to say that the shears cut the strips into a pit, before they are present to the winding. This technique has the effect of facilitating the separation of the strips while they are tension free at the outlet of the pit. This separation is effected by a straight or rotating separator, which is a known assembly, designated by the reference 5 in FIG. 1.

Entre ce séparateur 5 et l'enrouleur 4 vient s'insérer le dispositif de l'invention qui a été représenté schématiquement à la figure 1, désigné dans son ensemble par la référence 6.Between this separator 5 and the reel 4 is inserted the device of the invention which has been shown diagrammatically in FIG. 1, designated as a whole by the reference 6.

On connaît déjà des installations de refendage de bandes qui comportent un dispositif de tension permettant de freiner simultanément et sans frottement un ensemble de bandes se présentant à l'enroulement sur un même tambour, dans lequel l'effort de freinage nécessaire est transmis à deux nappes de courroies sans fin entre lesquelles passent les bandes de façon que les courroies puissent présenter des vitesses différentes, respectivement égales aux vitesses des bandes refendues devant être freinées.Band slitting systems are already known which include a tensioning device making it possible to brake simultaneously and without friction a set of bands which is wound on the same drum, in which the necessary braking force is transmitted to two layers endless belts between which the belts pass so that the belts can have different speeds, respectively equal to the speeds of the slit belts to be braked.

Ainsi, le brevet US-A-3 735 937, qui est considéré comme l'état de la technique le plus proche, a pour objet une installation pour le refendage continu de bandes de tôles utilisant comme moyen de freinage des courroies à base d'un mélange d'acier et de polyuréthane disposés en couches.Thus, US-A-3,735,937, which is considered to be the closest state of the art, relates to an installation for the continuous slitting of sheet metal strips using belts based on a mixture of steel and polyurethane arranged in layers.

L'expérience résultant de la mise en oeuvre de ces installations connues montre que ces dernières présentent un inconvénient qui résulte de l'usure des courroies du dispositif de tension. En effet, on constate que ces courroies s'usent sur leur épaisseur de façon inégale en raison notamment :

  • des vitesses différentes,
  • la nappe des courroies correspondant en largeur à la largeur maximale de la nappe de bandes refendues, et cette possibilité de largeur maximale n'étant pas toujours utilisée, ce sont toujours les mêmes courroies qui sont sollicitées et qui correspondent à la nappe de largeur maximale des bandes.
The experience resulting from the implementation of these known installations shows that the latter have a drawback which results from the wear of the belts of the tensioning device. In fact, it can be seen that these belts wear unevenly over their thickness, in particular due to:
  • different speeds,
  • the ply of the belts corresponding in width to the maximum width of the slit strip ply, and this possibility of maximum width not being always used, it is always the same belts which are stressed and which correspond to the ply of maximum width of the bands.

Il en résulte une usure très inégale de l'ensemble des courroies du dispositif de freinage et par conséquent, le freinage des bandes n'est plus constant après une courte durée d'utilisation ce qui oblige à de fréquents changements de courroies.This results in very uneven wear of all of the belts of the braking device and therefore, the braking of the bands is no longer constant after a short period of use which requires frequent changes of belts.

L'invention se propose de remédier à ces inconvénients en apportant une installation de refendage de bandes comportant un dispositif de tension permettant de freiner simultanément et sans frottement un ensemble de bandes se présentant à l'enroulement sur un même tambour, dans lequel l'effort de freinage nécessaire est transmis à deux nappes de courroies sans fin entre lesquelles passent les bandes refendues-de manière que les courroies puissent présenter des vitesses différentes, respectivement égales aux vitesses des bandes refendues à freiner , et dans laquelle l'effort de freinage est d'une part appliqué directement sur les courroies de la nappe supérieure par l'intermédiaire d'un plateau de serrage supérieur et d'autre part sur la nappe inférieure par l'intermédiaire d'un plateau de serrage inférieur, caractérisée en ce que ledit plateau de serrage est constitué par une pluralité de tubes dont le nombre est identique au nombre de paires de courroies et dont la largeur des surfaces supérieures est identique à celle des courroies, les tubes étant recouverts d'une feuille d'usure de grande dureté et de faible épaisseur, et en ce que l'effort de freinage est transmis aux deux plateaux de serrage supérieur et inférieur par l'intermédiaire d'une chambre gonflable interposée entre ledit plateau inférieur et le bâti de l'installation, de manière à obtenir une répartition uniforme de l'effort de freinage sur chaque courroie.The invention proposes to remedy these drawbacks by providing a strip slitting installation comprising a tensioning device making it possible to brake simultaneously and without friction a set of strips presenting themselves for winding on the same drum, in which the force necessary braking is transmitted to two layers of endless belts between which the slit belts pass-so that the belts can have different speeds, respectively equal to the speeds of the slit belts to be braked, and in which the braking force is d firstly applied directly to the belts of the upper ply via an upper clamping plate and secondly to the lower ply via a lower clamping plate, characterized in that said clamping plate is constituted by a plurality of tubes, the number of which is identical to the number of pairs of belts and the width of the upper surfaces of which is identical to that of the belts, the tubes being covered with a wear sheet of high hardness and low thickness, and in that the braking force is transmitted to the two upper and lower clamping plates by means of an inflatable chamber interposed between said lower plate and the frame of the installation, so to obtain a uniform distribution of the braking force on each belt.

Selon un mode de réalisation préféré de cette invention la feuille d'usure faisant partie du plateau de serrage inférieur est une feuille d'acier inoxydable et elle est tendue longitudinalement sur les tubes faisant partie de ce plateau inférieur, le montage étant réalisé de manière à pouvoir changer facilement cette feuille d'usure.According to a preferred embodiment of this invention, the wear sheet forming part of the lower clamping plate is a sheet of stainless steel and it is stretched longitudinally over the tubes forming part of this lower plate, the assembly being carried out so as to be able to easily change this wear sheet.

Selon un mode de réalisation préféré de cette invention, le plateau de freinage supérieur est réalisé sous la forme d'un caisson creux dans lequel circule un fluide de refroidissement, notamment de l'eau et les tubes constituant le plateau de serrage inférieur ont une section droite carrée ou rectangulaire et ils sont parcourus par un fluide de refroidissement, tel que l'eau.According to a preferred embodiment of this invention, the upper braking plate is produced in the form of a hollow box in which circulates a cooling fluid, in particular water and the tubes constituting the lower clamping plate have a section straight square or rectangular and they are traversed by a coolant, such as water.

Selon l'invention, l'effort de serrage est transmis aux deux plateaux de freinage, supérieur et inférieur, par l'intermédiaire d'une chambre gonflable interposés sous ledit plateau inférieur et le bâti de l'installation, cette chambre étant de préférence de forme tonique, réalisée en un polymère déformable et alimentée par un générateur en air comprimé dont on règle la pression pour faire varier à volonté la valeur du freinage.According to the invention, the clamping force is transmitted to the two braking plates, upper and lower, by means of an inflatable chamber interposed under said lower plate and the frame of the installation, this chamber preferably being of tonic form, made of a deformable polymer and supplied by a compressed air generator, the pressure of which is adjusted to vary the amount of braking at will.

D'autres caractéristiques et avantages de cette invention ressortiront de la description faite ci-après en référence au dessin annexé qui en illustre un exemple de réalisation. Sur le dessin :

  • la figure 1 est une vue schématique représentant dans son ensemble la ligne de refendage, décrite brièvement dans l'exposé qui précède, et dans laquelle est implanté le dispositif 6 selon l'invention,
  • la figure 2 est une vue schématique en élévation illustrant le dispositif objet de l'invention et,
  • la figure 3 est une vue en coupe selon 3-3 de la figure 2 à échelle agrandie.
Other characteristics and advantages of this invention will emerge from the description given below with reference to the appended drawing which illustrates an exemplary embodiment thereof. On the drawing :
  • FIG. 1 is a schematic view as a whole showing the slitting line, described briefly in the above description, and in which the device 6 according to the invention is installed,
  • FIG. 2 is a schematic elevation view illustrating the device which is the subject of the invention and,
  • Figure 3 is a sectional view along 3-3 of Figure 2 on an enlarged scale.

En se référant à la figure 1 des dessins, on y a désigné par la référence 6 le dispositif objet de cette invention. Sur la figure 2 où le dispositif 6 est représenté de façon plus détaillée, on voit que les bandes refendues 8 sont pincées par des ensembles de courroies 11, 11' puis déviées par un rouleau de déflection 7 avant de se présenter sur l'enrouleur 4. Ainsi qu'on peut le voir sur le dessin, les courroies de chacune des nappes de courroies 11 et 11' sont constituées par une pluralité d'éléments de largeur faible, par exemple de l'ordre de 15 à 50 mm selon les besoins. Ces courroies s'enroulent sur des poulies 9, 10 et 9', 10' respectivement. Bien entendu, les courroies sont guidées latéralement par tout dispositif approprié connu de manière à obtenir un enroulement correct.Referring to Figure 1 of the drawings, there is designated by reference 6 the device object of this invention. In Figure 2 where the device 6 is shown in more detail, it can be seen that the slit strips 8 are pinched by sets of belts 11, 11 'then deflected by a deflection roller 7 before being presented on the reel 4 As can be seen in the drawing, the belts of each of the plies of belts 11 and 11 ′ are constituted by a plurality of elements of small width, for example of the order of 15 to 50 mm as required. . These belts are wound on pulleys 9, 10 and 9 ', 10' respectively. Of course, the belts are guided laterally by any suitable known device so as to obtain correct winding.

Ainsi qu'on l'a indiqué ci-dessus, l'invention prévoit des moyens permettant de transmettre un effort de freinage aux deux nappes de courroies 11 et 11' permettant de freiner simultanément et sans frottement l'ensemble des bandes refendues 8 qui se présente à l'enroulement sur le tambour 4. Cet effort de freinage ou de friction, est appliqué sur les courroies elles-mêmes, au droit du serrage de ces dernières sur les bandes 8.As indicated above, the invention provides means for transmitting a braking force to the two plies of belts 11 and 11 'making it possible to brake simultaneously and without friction all of the slit bands 8 which are present at the winding on the drum 4. This braking or friction force is applied to the belts themselves, in line with the tightening of the latter on the bands 8.

Ce dispositif de freinage est représenté de façon détaillée sur les figures 2 et 3. Il comprend essentiellement un plateau de serrage supérieur 12 et un plateau de serrage inférieur 13, 16. Le plateau de serrage supérieur 12 est réalisé sous la forme d'un caisson creux dans lequel peut circuler un fluide de refroidissement tel que de l'eau, la surface plane inférieure de ce caisson 12, située en regard de la nappe de courroies 11 venant s'appliquer directement sur la face supérieure de ces courroies 11 pour transmettre l'effort de freinage par ces courroies aux bandes refendues 8. Le plateau de serrage inférieur comporte une pluralité de tubes tels que 13, dont le nombre et la surface supérieure (surface active de freinage) sont identiques à ceux des courroies de la nappe 11' (comme on peut le voir sur la figure 3), les tubes 13 étant recouverts d'une feuille d'usure 16, de grande dureté, destinée à transmettre l'effort de freinage aux courroies de la nappe 11'. Cet effort de freinage est appliqué sur les tubes 13 par l'intermédiaire d'une membrane ou chambre gonflable 14 interposée entre les tubes 13 et le bâti 17' du dispositif. Dans cet exemple de réalisation, les tubes 13 ont une section droite carrée, dont la surface supérieure correspond à celle des courroies de la nappe 11' à freiner et ils sont parcourus par un fluide de refroidissement, notamment de l'eau. La feuille d'usure 16 peut être réalisée sous la forme d'une feuille en acier inoxydable, de faible épaisseur, présentant un bon coefficient de frottement et une grande dureté, par exemple de 62 HRC. Cette feuille d'usure est tendue longitudinalement sur les tubes 16, ainsi qu'on peut le voir sur les figures 2 et 3, ce montage étant réalisé de manière à pouvoir facilement changer cette feuille d'usure.This braking device is shown in detail in Figures 2 and 3. It essentially comprises an upper clamping plate 12 and a lower clamping plate 13, 16. The upper clamping plate 12 is produced in the form of a box hollow in which a cooling fluid such as water can circulate, the lower flat surface of this box 12, located opposite the ply of belts 11 coming to apply directly on the upper face of these belts 11 to transmit the braking force by these belts with the split bands 8. The lower clamping plate comprises a plurality of tubes such as 13, the number and the upper surface of which (active braking surface) are identical to those of the belts of the ply 11 ' (as can be seen in Figure 3), the tubes 13 being covered with a wear sheet 16, of great hardness, intended to transmit the braking force to the belts of the ply 11 '. This braking force is applied to the tubes 13 by means of an inflatable membrane or chamber 14 interposed between the tubes 13 and the frame 17 'of the device. In this embodiment, the tubes 13 have a square cross section, the upper surface of which corresponds to that of the belts of the ply 11 'to be braked and they are traversed by a cooling fluid, in particular water. The wear sheet 16 can be produced in the form of a stainless steel sheet, of small thickness, having a good coefficient of friction and a high hardness, for example of 62 HRC. This wear sheet is stretched longitudinally on the tubes 16, as can be seen in Figures 2 and 3, this assembly being carried out so as to be able to easily change this wear sheet.

La chambre gonflable 14 qui transmet l'effort de freinage aux plateaux de freinage supérieur et inférieur est de préférence de forme torique et elle est réalisée notamment en polymère déformable. Cette chambre peut être gonflée à l'aide d'air comprimé délivré par un générateur dont on règle la pression de manière à faire varier à volonté la valeur du freinage.The inflatable chamber 14 which transmits the braking force to the upper and lower braking plates is preferably toroidal in shape and is made in particular from deformable polymer. This chamber can be inflated using compressed air supplied by a generator, the pressure of which is adjusted so as to vary the value of the braking at will.

La configuration particulière du plateau de freinage inférieur permet une facile adaptation aux différentes épaisseurs de bandes 8 devant être freinées individuellement puis enroulées sur le tambour 4. L'inconvénient mentionné ci-dessus d'une usure très inégale des pièces composant les plateaux de freinage des installations actuellement réalisées, n'existe pas dans le dispositif selon l'invention décrit ci-dessus, grâce à la conception originale du plateau de freinage inférieur, et on obtient ainsi une excellente tenue des courroies 11 et 11' permettant de doubler et même tripler la durée de fonctionnement avant rectification de ces courroies.The particular configuration of the lower braking plate allows easy adaptation to the different thicknesses of bands 8 to be braked individually and then wound on the drum 4. The disadvantage mentioned above of very uneven wear of the parts making up the braking plates of the installations currently carried out, do not exist in the device according to the invention described above, thanks to the original design of the lower braking plate, and thus excellent resistance of the belts 11 and 11 ′ is obtained, making it possible to double and even triple the operating time before rectification of these belts.

Claims (7)

  1. Installation for slitting bands, which comprises a tensioning device enabling an assembly of bands offered for winding onto a single drum to be braked simultaneously and without friction, in which the braking force required is transmitted to two layers of endless belts, between which the slit bands pass in such a way that the belts can have different speeds, respectively equal to the speeds of the slit bands to be braked, and in which the braking force is, on the one hand, applied directly onto the belts (11) of the upper layer by means of an upper pressing plate (12) and, on the other hand, onto the lower layer (11') by means of a lower pressing plate, characterized in that the lower pressing plate is constituted of a plurality of tubes (13), the number of which is identical to the number of pairs of belts and the width of the upper faces of which is identical to that of the belts, the tubes being covered with a wearing sheet (16) of great hardness and small thickness, and in that the braking force is transmitted to the upper (11) and lower (11') pressing plates by an inflatable chamber (14), interposed between said lower plate and the frame (17') of the installation in such a way as to obtain a uniform distribution of the braking force to each individual belt.
  2. Installation according to Claim 1, characterized in that the upper braking plate (12) is constructed in the form of a hollow box, through the internal space of which a cooling fluid such as water flows.
  3. Installation according to one of Claims 1 or 2, characterized in that the tubes constituting the lower pressing plate have a square or rectangular cross-section and are traversed by a cooling fluid such as water.
  4. Installation according to Claim 1, characterized in that said inflatable chambers are of toric form.
  5. Installation according to one of Claims 1 or 4, characterized in that said inflatable chamber is made of a deformable polymer.
  6. Installation according to one of Claims 4 or 5, characterized in that said inflatable chamber is supplied from a compressed air generator, the pressure of which is regulated to cause the braking value to be varied as desired.
  7. Installation according to any one of the preceding Claims, characterized in that said wearing sheet (16) is a sheet of stainless steel stretched longitudinally over said tubes, the mounting being constructed in such a manner as to allow this wearing sheet to be easily changed.
EP90402844A 1989-11-08 1990-10-11 Improvements to a band slitting installation Expired - Lifetime EP0427580B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90402844T ATE90231T1 (en) 1989-11-08 1990-10-11 IMPROVEMENTS TO TAPE REWIND LINES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8914663 1989-11-08
FR8914663A FR2654024B1 (en) 1989-11-08 1989-11-08 IMPROVEMENTS TO TAPE SLITTING FACILITIES.

Publications (2)

Publication Number Publication Date
EP0427580A1 EP0427580A1 (en) 1991-05-15
EP0427580B1 true EP0427580B1 (en) 1993-06-09

Family

ID=9387209

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90402844A Expired - Lifetime EP0427580B1 (en) 1989-11-08 1990-10-11 Improvements to a band slitting installation

Country Status (7)

Country Link
EP (1) EP0427580B1 (en)
JP (1) JPH03227864A (en)
AT (1) ATE90231T1 (en)
DE (1) DE69001884T2 (en)
DK (1) DK0427580T3 (en)
ES (1) ES2043322T3 (en)
FR (1) FR2654024B1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2651891B2 (en) * 1993-11-05 1997-09-10 株式会社日本開発コンサルタント Circular metal strip tension applying device
FR2806334B1 (en) * 2000-03-15 2002-08-30 L A Chaignaud Ets BRAKING PRESS FOR HOT OR COLD ROLLED SHEET AND A BRAKING ASSEMBLY FOR SUCH A PRESS
EP1380359B1 (en) * 2002-07-02 2007-04-18 Japan Development Consultants, Inc. Tensioning apparatus for a strip coiler
JP4801788B1 (en) * 2010-10-07 2011-10-26 株式会社日本開発コンサルタント Multi-strip endless belt strip winding tensioning device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1808630A1 (en) * 1968-11-13 1970-06-04 Maschb Pieper Gmbh Device for generating a retraction, preferably with parallel bands
AT295974B (en) * 1970-07-20 1972-01-25 Voest Ag Device for braking a sheet metal strip to be wound onto a reel core, preferably cut several times in the longitudinal direction
US3735937A (en) * 1971-02-08 1973-05-29 B Plantard Continuous sheet slitting mills
FR2163910A5 (en) * 1971-12-06 1973-07-27 Somenor

Also Published As

Publication number Publication date
ES2043322T3 (en) 1993-12-16
FR2654024A1 (en) 1991-05-10
FR2654024B1 (en) 1995-04-14
JPH03227864A (en) 1991-10-08
EP0427580A1 (en) 1991-05-15
ATE90231T1 (en) 1993-06-15
DK0427580T3 (en) 1993-11-01
DE69001884D1 (en) 1993-07-15
DE69001884T2 (en) 1994-05-11

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