EP3119709A1 - Method and module for cutting a non-woven textile strip in a method for winding said strip about a rotatably driven receiving bobbin - Google Patents

Method and module for cutting a non-woven textile strip in a method for winding said strip about a rotatably driven receiving bobbin

Info

Publication number
EP3119709A1
EP3119709A1 EP15715342.0A EP15715342A EP3119709A1 EP 3119709 A1 EP3119709 A1 EP 3119709A1 EP 15715342 A EP15715342 A EP 15715342A EP 3119709 A1 EP3119709 A1 EP 3119709A1
Authority
EP
European Patent Office
Prior art keywords
strip
web
line
winding
upstream
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP15715342.0A
Other languages
German (de)
French (fr)
Other versions
EP3119709B1 (en
Inventor
Luc LASSALLE
Christophe MOUNIER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Spoolex SAS
Original Assignee
Spoolex SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Spoolex SAS filed Critical Spoolex SAS
Publication of EP3119709A1 publication Critical patent/EP3119709A1/en
Application granted granted Critical
Publication of EP3119709B1 publication Critical patent/EP3119709B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/26—Cutting-off the web running to the wound web roll
    • B65H19/267—Cutting-off the web running to the wound web roll by tearing or bursting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding mechanisms
    • B65H18/10—Mechanisms in which power is applied to web-roll spindle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding mechanisms
    • B65H18/26—Mechanisms for controlling contact pressure on winding-web package, e.g. for regulating the quantity of air between web layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/515—Cutting handled material
    • B65H2301/5151—Cutting handled material transversally to feeding direction
    • B65H2301/51514—Breaking; Bursting; Tearing, i.e. cutting without cutting member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/515—Cutting handled material
    • B65H2301/5152—Cutting partially, e.g. perforating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/515—Cutting handled material
    • B65H2301/5153—Details of cutting means
    • B65H2301/51532—Blade cutter, e.g. single blade cutter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/177—Fibrous or compressible material

Definitions

  • the winding process consists in winding a non-woven fabric strip around a so-called receiving spool driven in rotation.
  • the method according to the invention thus relates more particularly to the cutting of the textile strip, upstream of the receiving coil, to allow for example the evacuation of said receiving reel once ⁇ completed winding.
  • the invention finds particular advantageous, but not limiting, application in a splicing process, or else slicing for example, when it is appropriate, at the end of winding, to cut the textile strip to change the receiving coil.
  • the method according to the invention is adaptable to any machine or any process in which it is necessary to cut a textile strip upstream of a receiving coil.
  • the invention also relates to a module for cutting a non-woven fabric web in a method of winding said web around a rotationally driven receiving roll.
  • One of the aims of the invention is to provide a rapid and automatic method of cutting a nonwoven fabric web in a method of winding said web around a rotationally driven receiving roll.
  • Another object of the invention is to provide such a method which can be adapted to any type of winding process such as a winding of a strip for example.
  • a method comprising at least the steps of:
  • the method makes it possible to cut the textile strip upstream of the receiving roll. Since the method provides for a step of moving the weakened line, the end of the strip not attached to the receiving coil is, once the strip is cut, easily recoverable for another use, such as for example for the attach to a new receiver and continue the winding process. Stopping the unwinding of the strip to make a weakened line, instead of a cutting line, then restarting the unwinding to move the weakening line, allows the cutting method according to the invention to be able to adapt to any type of winding process, such as a winding by slicing for example.
  • Controlled tensioning of the tape is done by rotating the receiving coil in a controlled speed so as not to cut the tape.
  • the cutting of the textile strip is carried out, on the one hand, by blocking the strip upstream / downstream of the weakening line and, on the other hand, by exerting a downstream / upstream traction of said weakening line. Blocking and traction are carried out by any appropriate means.
  • the strip is thus cut quickly and cleanly along said line of weakness, without the intervention of an operator.
  • the band is blocked when the weakening line is out of the means that made it possible to make said weakening line.
  • the step of blocking the tape consists of operating means that grip the tape.
  • the step of exerting a tensile force on the web consists of continuing the rotational drive of the web.
  • the process is simple and reliable.
  • the method according to the invention also comprises, after the cutting of the strip, a step of applying a compression arm to the width of the receiving coil, while continuing the rotational drive of the receiving coil to controlled speed and over at least one turn to compress the free end of the textile web against the spool.
  • the step of making a weakening line consists of producing a pre-cut line, or a line consisting of a plurality of perforations, or any other type of weakening lines.
  • the essential point lies in the fact that the weakening line must allow the cutting of the strip when it is blocked upstream / downstream of said weakening line and that a pulling force is exerted on the downstream / upstream strip. of that line.
  • the step of applying a compression arm consists in applying a transverse roller. The transverse roller makes it possible to apply a controlled pressure over the entire width of the spool for compressing the free end of the strip against said spool and allowing its temporary "sticking".
  • the means capable of blocking the strip may have different shapes.
  • the bottom line is that they are able to block unwinding of the tape.
  • These may for example be in the form of actuatable means for gripping the band.
  • the fact that these means are operable so as to come to pinch the band makes it possible to pinch said strip upstream or downstream of the weakening line, according to the desired implementation of the invention.
  • the clamping is advantageously carried out over the entire width of the strip.
  • the clamping means are, for example, able to carry out a pressure on the strip against a surface.
  • the clamping means are thus operable to move from a neutral position in which they do not interfere with unwinding of the band at a clamping position in which they are resting against the band to pinch it against a counter surface and prevent its unwinding.
  • the embrittlement means are of any suitable form. The essential lies in the fact that they are able to achieve a transverse line of embrittlement of the textile strip, allowing it to be subsequently cut along this line of weakness.
  • FIGS. 1 to 6 are successive schematic representations in side view of a cutting module according to the invention, said figures successively illustrating the steps of the method;
  • FIG. 1 illustrates the process of winding a textile strip around a receiving coil;
  • FIG. 2 illustrates the step of stopping the winding process
  • FIG. 3 illustrates the step consisting in making a transverse weakening line on the textile strip
  • FIG. 4 illustrates the step of restarting the rotational drive of the controlled-speed coil to move said weakening line
  • - Figure 5 illustrates the step of clamping the strip upstream of the weakening line, while continuing ⁇ rotation of the coil to cut the textile strip along the weakening line.
  • FIG. 6 illustrates the step of continuing the rotation of the spool on at least one turn by applying a compression arm to the width of the strip;
  • FIG. 7 is a diagrammatic representation in perspective of an embodiment of the embrittlement means according to the invention.
  • FIG. 8 is a schematic representation similar to that of fig 7, the means being shown from the front.
  • the invention relates to a method and a module (1) for cutting a web (2) of nonwoven fabric in a method of winding said web (2) around a spool (3) driven in rotation .
  • the method and the module (1) according to the invention allow to cut transversely the strip (2) upstream of the coil (3). This operation allows the evacuation of the coil (3) once the winding of the strip (2) completed.
  • the winding method thus implements a reel (3) receiving which is fixed at one end of a strip (2) to be wound.
  • the coil (3) is rotated about its axis of revolution to proceed to the winding of the strip (2).
  • Return rollers (4) are used to tension the web (2) and to return said web (2) to the web (3).
  • the winding of the strip (2) is carried out until, for example, a desired spool diameter (3) is obtained.
  • embrittlement means (5) are arranged upstream of the receiving reel (3), and on the unwinding path of the textile strip (2). These embrittlement means (5) may have different shapes. These embrittlement means (5) are displaceable from a first position in which they are not in contact with the strip (2), to a second position in which they are pressed against the strip (2), in counterpressure against a surface (5b) for example, and over its entire width so as to achieve a transverse weakening line (8) of said strip (2).
  • these weakening means (5) are for example in the form of a blade (5a) comprising a sawtooth profile and secured to displacement means such as a jack (5c). ) for example.
  • the blade (5a) is pressed against a surface (5b) comprising a complementary sawtooth profile.
  • the weakening line is in particular a pre-cut line.
  • the winding of the textile strip (2) is restarted.
  • the spool (3) is rotated again and at a controlled speed so as to wind the web (2) of textile around said spool (3).
  • This operation must be done at controlled speed and tension so as not to generate too much tensile force on the strip (2) which could lead to its cutting along the line of weakness.
  • the winding thus causes the displacement of the weakened line, and the winding is continued until this line reaches a desired position.
  • the desired position is defined so as to leave the weakening line of the space generated by the weakening means (5) so that once the subsequent cut is made, it is easy to grasp the end of the strip (2). of textile not attached to the reel (3) receiving, that is to say the end of the strip (2) from said weakening means (5).
  • clamping means (6) are arranged upstream of the receiving coil (3). These clamping means (6) are arranged such that they are able to block unwinding of the textile strip (2) upstream of the weakening line. Thus, when the weakening line has reached the desired position, the clamping means (6) are actuated and clamp the web (2) of textile, while continuing ⁇ rotational drive of the coil (3).
  • the clamping means (6) are thus operable to move from a neutral position in which they do not interfere with unwinding of the band at a clamping position in which they bear against the band (2) to pinch it against a against the surface and prevent its unfolding.
  • the rotational drive of the spool (3) then generates a tensile force exerted on the strip (2), which force causes the cutting of the strip (2) along the transverse weakening line (8).
  • the cutting is fast and clean, and requires no operator intervention.
  • the clamping means (6) are suitable for clamping the band (2) and blocking its unwinding. These clamping means (6) are of any suitable type and are for example arranged at the level of the embrittlement means (5).
  • the pulling force is exerted by the rotational drive of the spool (3) but can be exerted by any other suitable means.
  • the invention provides a method and a module (1) for cutting a nonwoven fabric web (2) in a method of winding said web (2) around a web (3) reception.
  • the process is fast and efficient and requires no user intervention.

Landscapes

  • Treatment Of Fiber Materials (AREA)

Abstract

According to the invention, the method includes at least the steps consisting of: - stopping the winding of the strip (2) to be cut by stopping the rotation of the bobbin (3); - creating a transverse line of weakness (8) on the strip (2), upstream from the bobbin (3); - restarting the winding, with a controlled speed and tension for the band (2), by restarting rotation with a controlled speed for the bobbin (3) so as to move said line of weakness; - locking the strip (2) upstream/downstream from the line of weakness; and - exerting a pulling force on the strip (2) upstream/downstream from the line of weakness so as to permanently cut the strip (2) along said line of weakness.

Description

PROCEDE ET MODULE DE DECOUPAGE D'UNE BANDE DE TEXTILE NON TISSE DANS UN PROCEDE D'ENROULAGE DE LADITE BANDE AUTOUR D'UNE BOBINE DE RECEPTION  METHOD AND MODULE FOR CUTTING A NON-WOVEN TEXTILE STRIP IN A METHOD FOR WOUNDING THE SAID STRIP AROUND A RECEPTION COIL
ENTRAINEE EN ROTATION DOMAINE TECHNIQUE  ROTATIONAL TRAINING TECHNICAL FIELD
La présente invention concerne un procédé de découpage d'une bande de textile non tissé dans un procédé d'enroulage de ladite bande autour d'une bobine de réception entraînée en rotation. The present invention relates to a method of cutting a nonwoven fabric web in a method of winding said web around a rotationally driven receiving roll.
Le procédé d'enroulage consiste à enrouler une bande de textile non tissé autour d'une bobine dite de réception entraînée en rotation. Le procédé selon l'invention concerne ainsi plus particulièrement le découpage de la bande de textile, en amont de la bobine de réception, pour permettre par exemple l'évacuation de ladite bobine de réception une fois Γ enroulage terminé . The winding process consists in winding a non-woven fabric strip around a so-called receiving spool driven in rotation. The method according to the invention thus relates more particularly to the cutting of the textile strip, upstream of the receiving coil, to allow for example the evacuation of said receiving reel once Γ completed winding.
L'invention trouve notamment une application avantageuse, mais non limitative, dans un procédé de raboutage, ou bien de trancannage par exemple, lorsqu'il convient, en fin d'enroulage, de découper la bande de textile pour changer de bobine de réception. The invention finds particular advantageous, but not limiting, application in a splicing process, or else slicing for example, when it is appropriate, at the end of winding, to cut the textile strip to change the receiving coil.
Le procédé selon l'invention est adaptable à toute machine ou tout procédé dans lesquels il est nécessaire de découper une bande de textile en amont d'une bobine de réception. The method according to the invention is adaptable to any machine or any process in which it is necessary to cut a textile strip upstream of a receiving coil.
L'invention concerne également un module de découpage d'une bande de textile non tissé dans un procédé d'enroulage de ladite bande autour d'une bobine de réception entraînée en rotation. The invention also relates to a module for cutting a non-woven fabric web in a method of winding said web around a rotationally driven receiving roll.
ETAT ANTERIEUR DE LA TECHNIQUE A ce jour, aucun procédé automatique, ni module ne sont connus de l'état de la technique pour le découpage d'une bande de textile non tissé en amont d'une bobine de réception. PRIOR ART To date, no automatic method or module are known from the state of the art for cutting a nonwoven fabric strip upstream of a receiving coil.
En effet, le découpage de la bande est réalisé manuellement par un opérateur. L'opération est donc lente et nécessite l'intervention dudit opérateur. EXPOSE DE L'INVENTION Indeed, the cutting of the band is performed manually by an operator. The operation is slow and requires the intervention of said operator. SUMMARY OF THE INVENTION
L'un des buts de l'invention est de fournir un procédé rapide et automatique de découpage d'une bande de textile non tissé dans un procédé d'enroulage de ladite bande autour d'une bobine de réception entraînée en rotation. One of the aims of the invention is to provide a rapid and automatic method of cutting a nonwoven fabric web in a method of winding said web around a rotationally driven receiving roll.
Un autre objectif de l'invention est de fournir un tel procédé qui peut s'adapter à tout type de procédé d'enroulage tel qu'un enroulage par trancannage d'une bande par exemple. A cet effet, et conformément à l'invention, il a été mis au point un tel procédé comprenant au moins les étapes consistant à : Another object of the invention is to provide such a method which can be adapted to any type of winding process such as a winding of a strip for example. For this purpose, and in accordance with the invention, there has been developed such a method comprising at least the steps of:
- stopper l'enroulage de la bande à découper en stoppant l'entraînement en rotation de la bobine ;  - stop the winding of the strip to be cut by stopping the rotation of the coil;
- réaliser une ligne transversale de fragilisation sur la bande, en amont de la bobine de réception ;  - Make a transverse weakening line on the strip, upstream of the receiving coil;
- redémarrer l'enroulage à vitesse et tension contrôlées de la bande en redémarrant l'entraînement en rotation à vitesse contrôlée de la bobine, de manière à déplacer ladite ligne de fragilisation ;  - restart the winding at controlled speed and tension of the band by restarting the rotational drive at a controlled speed of the coil, so as to move said weakening line;
- bloquer la bande en amont/aval de la ligne de fragilisation ;  - block the band upstream / downstream of the weakening line;
- exercer une force de traction sur la bande en aval/amont de la ligne de fragilisation pour découper définitivement la bande suivant ladite ligne de fragilisation. exerting a tensile force on the strip downstream / upstream of the weakening line to definitively cut the strip along said line of weakening.
De cette manière, le procédé permet de découper la bande textile en amont de la bobine de réception. Etant donné que le procédé prévoit une étape consistant à déplacer la ligne de fragilisation, l'extrémité de la bande non attachée à la bobine de réception est, une fois la bande découpée, facilement récupérable pour une autre utilisation, telle que par exemple pour la rattacher à une nouvelle bobine de réception et continuer ainsi le procédé d'enroulage. Le fait de stopper le déroulage de la bande pour effectuer une ligne de fragilisation, au lieu d'une ligne de découpe, puis de redémarrer le déroulage pour déplacer la ligne de fragilisation, permet au procédé de découpage selon l'invention de pouvoir s'adapter à tout type de procédé d'enroulage, tel qu'un enroulage par trancannage par exemple. In this way, the method makes it possible to cut the textile strip upstream of the receiving roll. Since the method provides for a step of moving the weakened line, the end of the strip not attached to the receiving coil is, once the strip is cut, easily recoverable for another use, such as for example for the attach to a new receiver and continue the winding process. Stopping the unwinding of the strip to make a weakened line, instead of a cutting line, then restarting the unwinding to move the weakening line, allows the cutting method according to the invention to be able to adapt to any type of winding process, such as a winding by slicing for example.
L'enroulage à tension contrôlée de la bande se fait en entraînant en rotation, à vitesse contrôlée, la bobine de réception pour ne pas entraîner la découpe de la bande. De ce fait, la découpe de la bande de textile est réalisée, d'une part, par le fait de bloquer la bande en amont/aval de la ligne de fragilisation et, d'autre part, par le fait d'exercer une traction en aval/amont de ladite ligne de fragilisation. Le blocage et la traction sont effectués par tous moyens appropriés. Controlled tensioning of the tape is done by rotating the receiving coil in a controlled speed so as not to cut the tape. Thereby, the cutting of the textile strip is carried out, on the one hand, by blocking the strip upstream / downstream of the weakening line and, on the other hand, by exerting a downstream / upstream traction of said weakening line. Blocking and traction are carried out by any appropriate means.
La bande est donc découpée rapidement et proprement suivant ladite ligne de fragilisation, sans l'intervention d'un opérateur. The strip is thus cut quickly and cleanly along said line of weakness, without the intervention of an operator.
De préférence, la bande est bloquée lorsque la ligne de fragilisation se trouve hors des moyens ayant permis de réaliser ladite ligne de fragilisation. Preferably, the band is blocked when the weakening line is out of the means that made it possible to make said weakening line.
De cette manière, lesdits moyens ayant permis de réaliser la ligne de fragilisation ne gêne pas pour récupérer la partie de la bande amont. De préférence, l'étape consistant à bloquer la bande consiste à actionner des moyens qui viennent pincer la bande. In this way, said means having made it possible to make the weakening line does not interfere with recovering the portion of the upstream band. Preferably, the step of blocking the tape consists of operating means that grip the tape.
De préférence, l'étape consistant à exercer une force de traction sur la bande consiste à continuer l'entraînement en rotation de la bobine. Ainsi le procédé est simple et fiable. Preferably, the step of exerting a tensile force on the web consists of continuing the rotational drive of the web. Thus the process is simple and reliable.
Avantageusement, le procédé selon l'invention comprend également, après le découpage de la bande, une étape consistant à appliquer un bras de compression sur la largeur de la bobine de réception, tout en continuant l'entraînement en rotation de la bobine de réception à vitesse contrôlée et sur au moins un tour pour compresser l'extrémité libre de la bande de textile contre la bobine. Advantageously, the method according to the invention also comprises, after the cutting of the strip, a step of applying a compression arm to the width of the receiving coil, while continuing the rotational drive of the receiving coil to controlled speed and over at least one turn to compress the free end of the textile web against the spool.
De cette manière, l'extrémité libre de la bande de textile issue de la bobine de réception est compressée et « collée » contre la bobine. La bobine de réception ne risque pas de se dérouler inopinément. In this way, the free end of the textile web from the receiving reel is compressed and "glued" against the reel. The receiving coil will not run unexpectedly.
L'étape consistant à réaliser une ligne de fragilisation consiste à réaliser une ligne de prédécoupe, ou bien une ligne constituée par une pluralité de perforations, ou bien tout autre type de lignes de fragilisation. L'essentiel réside dans le fait que la ligne de fragilisation doit permettre le découpage de la bande lorsque celle-ci est bloquée en amont/aval de ladite ligne de fragilisation et qu'une force de traction est exercée sur la bande en aval/amont de ladite ligne. Selon une forme de réalisation particulière mais non limitative, l'étape consistant à appliquer un bras de compression consiste à appliquer un rouleau transversal. Le rouleau transversal permet d'appliquer une pression contrôlée sur toute la largeur de la bobine pour compresser l'extrémité libre de la bande contre ladite bobine et permettre son « collage » temporaire. The step of making a weakening line consists of producing a pre-cut line, or a line consisting of a plurality of perforations, or any other type of weakening lines. The essential point lies in the fact that the weakening line must allow the cutting of the strip when it is blocked upstream / downstream of said weakening line and that a pulling force is exerted on the downstream / upstream strip. of that line. According to a particular but non-limiting embodiment, the step of applying a compression arm consists in applying a transverse roller. The transverse roller makes it possible to apply a controlled pressure over the entire width of the spool for compressing the free end of the strip against said spool and allowing its temporary "sticking".
L'invention concerne aussi un module découpage d'une bande de textile non tissé dans un procédé d'enroulage de ladite bande autour d'une bobine de réception entraînée en rotation. Selon l'invention, le module comprend : The invention also relates to a cutting module of a non-woven textile web in a method of winding said web around a rotationally driven receiving roll. According to the invention, the module comprises:
- des moyens aptes à réaliser, en amont de la bobine, une ligne de fragilisation transversale de ladite bande ;  means capable of producing, upstream of the coil, a transverse weakening line of said strip;
- des moyens aptes à bloquer la bande en amont/aval de la ligne de fragilisation, se présentant sous la forme de moyens actionnables pour venir pincer ladite bande ;  - Means capable of blocking the band upstream / downstream of the weakening line, being in the form of actuatable means for gripping said band;
- des moyens aptes à exercer une force de traction sur la bande en aval/amont de la ligne de fragilisation pour découper définitivement la bande suivant ladite ligne de fragilisation. - Means adapted to exert a tensile force on the belt downstream / upstream of the weakening line to permanently cut the strip along said line of weakening.
De préférence, les moyens aptes à bloquer la bande peuvent présenter différentes formes. L'essentiel réside dans le fait qu'ils sont aptes à bloquer le déroulage de la bande. Ceux-ci peuvent par exemple se présenter sous la forme de moyens actionnables pour venir pincer la bande. Le fait que ces moyens soient actionnables de sorte à venir pincer la bande permet de pouvoir pincer ladite bande en amont ou en aval de la ligne de fragilisation, selon la mise en œuvre désirée de l'invention. Le pinçage est avantageusement effectué sur toute la largeur de la bande. Les moyens de pinçage sont par exemple aptes à réaliser une pression sur la bande en contre appui contre une surface. Les moyens de pinçage sont ainsi actionnables pour passer d'une position neutre dans laquelle ils ne gênent pas le déroulage de la bande à une position de pinçage dans laquelle ils sont en appui contre la bande pour la pincer contre une contre-surface et empêcher son déroulement. Les moyens de fragilisation sont de toutes formes appropriées. L'essentiel réside dans le fait qu'ils sont aptes à réaliser une ligne transversale de fragilisation de la bande de textile, lui permettant d'être ultérieurement découpée suivant cette ligne de fragilisation. Preferably, the means capable of blocking the strip may have different shapes. The bottom line is that they are able to block unwinding of the tape. These may for example be in the form of actuatable means for gripping the band. The fact that these means are operable so as to come to pinch the band makes it possible to pinch said strip upstream or downstream of the weakening line, according to the desired implementation of the invention. The clamping is advantageously carried out over the entire width of the strip. The clamping means are, for example, able to carry out a pressure on the strip against a surface. The clamping means are thus operable to move from a neutral position in which they do not interfere with unwinding of the band at a clamping position in which they are resting against the band to pinch it against a counter surface and prevent its unwinding. The embrittlement means are of any suitable form. The essential lies in the fact that they are able to achieve a transverse line of embrittlement of the textile strip, allowing it to be subsequently cut along this line of weakness.
Les moyens aptes à exercer une traction sur la bande peuvent présenter différentes formes. Avantageusement ceux-ci sont constitués par les moyens permettant d'entraîner en rotation la bobine de réception, déjà présents dans le procédé d'enroulage de la bande. Les moyens de fragilisation peuvent présenter différentes formes, telles que par exemple sous la forme d'une lame comprenant un profil en dents de scie, ou bien d'une ligne d'aiguilles de perforation aptes à réaliser une ligne de perforation, transversale, fragilisant la bande de textile. BREVE DESCRIPTION DES DESSINS Means capable of exerting traction on the strip may have different shapes. Advantageously these are constituted by the means for rotating the receiving coil, already present in the winding process of the strip. The embrittlement means may have different shapes, such as for example in the form of a blade comprising a sawtooth profile, or a line of perforation needles capable of producing a perforation line, transverse, weakening the textile band. BRIEF DESCRIPTION OF THE DRAWINGS
D'autres caractéristiques et avantages de l'invention ressortiront clairement de la description qui en est réalisée ci-après, à titre indicatif et nullement limitatif, en référence aux figures annexées dans lesquelles : Other characteristics and advantages of the invention will emerge clearly from the description which is given hereinafter, by way of indication and in no way limiting, with reference to the appended figures in which:
- les figures 1 à 6 sont des représentations schématiques successives en vue de côté d'un module de découpage selon l'invention, lesdites figures illustrant successivement les étapes du procédé ; - la figure 1 illustre le procédé d'enroulage d'une bande de textile autour d'une bobine de réception ; - Figures 1 to 6 are successive schematic representations in side view of a cutting module according to the invention, said figures successively illustrating the steps of the method; - Figure 1 illustrates the process of winding a textile strip around a receiving coil;
- la figure 2 illustre l'étape consistant à stopper le procédé d'enroulage ; - la figure 3 illustre l'étape consistant à réaliser une ligne transversale de fragilisation sur la bande de textile ; FIG. 2 illustrates the step of stopping the winding process; FIG. 3 illustrates the step consisting in making a transverse weakening line on the textile strip;
- la figure 4 illustre l'étape consistant à redémarrer l'entraînement en rotation de la bobine à vitesse contrôlée pour déplacer ladite ligne de fragilisation ; - la figure 5 illustre l'étape consistant à pincer la bande en amont de la ligne de fragilisation, tout en continuant Γ entraînement en rotation de la bobine pour découper la bande de textile suivant la ligne de fragilisation. - la figure 6 illustre l'étape consistant à continuer l'entraînement en rotation de la bobine sur au moins un tour en y appliquant un bras de compression sur la largeur de la bande ; FIG. 4 illustrates the step of restarting the rotational drive of the controlled-speed coil to move said weakening line; - Figure 5 illustrates the step of clamping the strip upstream of the weakening line, while continuing Γ rotation of the coil to cut the textile strip along the weakening line. FIG. 6 illustrates the step of continuing the rotation of the spool on at least one turn by applying a compression arm to the width of the strip;
- la figure 7 est une représentation schématique en perspective d'une forme de réalisation des moyens de fragilisation selon l'invention ; FIG. 7 is a diagrammatic representation in perspective of an embodiment of the embrittlement means according to the invention;
- la figure 8 est une représentation schématique similaire à celle de la figue 7, les moyens étant représentés de face. - Figure 8 is a schematic representation similar to that of fig 7, the means being shown from the front.
EXPOSE DÉTAILLE DE L'INVENTION DETAILED DESCRIPTION OF THE INVENTION
L'invention concerne un procédé et un module (1) de découpage d'une bande (2) de textile non tissé dans un procédé d'enroulage de ladite bande (2) autour d'une bobine (3) de réception entraînée en rotation. Le procédé et le module (1) selon l'invention permettent de découper transversalement la bande (2) en amont de la bobine (3). Cette opération permet l'évacuation de la bobine (3) une fois l'enroulage de la bande (2) terminé. The invention relates to a method and a module (1) for cutting a web (2) of nonwoven fabric in a method of winding said web (2) around a spool (3) driven in rotation . The method and the module (1) according to the invention allow to cut transversely the strip (2) upstream of the coil (3). This operation allows the evacuation of the coil (3) once the winding of the strip (2) completed.
Le procédé d'enroulage met ainsi en œuvre une bobine (3) de réception à laquelle est fixée l'une des extrémités d'une bande (2) à enrouler. The winding method thus implements a reel (3) receiving which is fixed at one end of a strip (2) to be wound.
En référence à la figure 1 la bobine (3) est mue en rotation autour de son axe de révolution pour procéder à l'enroulage de la bande (2). Des rouleaux de renvoi (4) permettent de tendre la bande (2) et de renvoyer ladite bande (2) vers la bobine (3). L'enroulage de la bande (2) est réalisé jusqu'à obtenir par exemple un diamètre de bobine (3) désiré. Referring to Figure 1 the coil (3) is rotated about its axis of revolution to proceed to the winding of the strip (2). Return rollers (4) are used to tension the web (2) and to return said web (2) to the web (3). The winding of the strip (2) is carried out until, for example, a desired spool diameter (3) is obtained.
Une fois l'enroulage terminé, il devient nécessaire de découper transversalement la bande (2) pour pouvoir évacuer la bobine (3) pleine et installer une nouvelle bobine (3) vide par exemple. En référence à la figure 2, l'enroulage de la bande (2) de textile est stoppé. En d'autres termes, l'entrainement en rotation de la bobine (3) de réception est arrêté. Once the winding is completed, it becomes necessary to cut transversely the strip (2) to be able to evacuate the full coil (3) and install a new empty coil (3) for example. Referring to Figure 2, the winding of the web (2) textile is stopped. In other words, the rotational drive of the receiving coil (3) is stopped.
En référence à la figure 3, des moyens de fragilisation (5) sont agencés en amont de la bobine (3) de réception, et sur le chemin de déroulage de la bande (2) de textile. Ces moyens de fragilisation (5) peuvent présenter différentes formes. Ces moyens de fragilisation (5) sont déplaçables d'une première position dans laquelle ils ne sont pas en contact avec la bande (2), jusqu'à une deuxième position dans laquelle ils sont pressés contre la bande (2), en contre appui contre une surface (5b) par exemple, et sur toute sa largeur de manière à réaliser une ligne transversale de fragilisation (8) de ladite bande (2). With reference to FIG. 3, embrittlement means (5) are arranged upstream of the receiving reel (3), and on the unwinding path of the textile strip (2). These embrittlement means (5) may have different shapes. These embrittlement means (5) are displaceable from a first position in which they are not in contact with the strip (2), to a second position in which they are pressed against the strip (2), in counterpressure against a surface (5b) for example, and over its entire width so as to achieve a transverse weakening line (8) of said strip (2).
En référence aux figures 7 et 8, ces moyens de fragilisation (5) se présentent par exemple sous la forme d'une lame (5a) comprenant un profil en dents de scie et assujettie à des moyens de déplacement tel qu'un vérin (5c) par exemple. La lame (5a) est pressée contre une surface (5b) comprenant un profil complémentaire en dents de scie. La ligne de fragilisation est notamment une ligne de prédécoupe. With reference to FIGS. 7 and 8, these weakening means (5) are for example in the form of a blade (5a) comprising a sawtooth profile and secured to displacement means such as a jack (5c). ) for example. The blade (5a) is pressed against a surface (5b) comprising a complementary sawtooth profile. The weakening line is in particular a pre-cut line.
Lorsque la ligne transversale de fragilisation (8) est réalisée, et en référence à la figure 4, l'enroulage de la bande (2) de textile est redémarré. En d'autres termes, la bobine (3) est mue de nouveau en rotation et à vitesse contrôlée de manière à enrouler la bande (2) de textile autour de ladite bobine (3). Cette opération doit se faire à vitesse et tension contrôlées pour ne pas générer une trop grande force de traction sur la bande (2) qui pourrait entraîner sa découpe suivant la ligne de fragilisation. L'enroulage entraine de ce fait le déplacement de la ligne de fragilisation, et l'enroulage est continué jusqu'à ce que cette ligne atteigne une position désirée. La position désirée est définie de sorte à sortir la ligne de fragilisation de l'encombrement généré par les moyens de fragilisation (5) pour qu'une fois la découpe ultérieure réalisée, il soit facile de saisir l'extrémité de la bande (2) de textile non attachée à la bobine (3) de réception, c'est-à-dire l'extrémité de la bande (2) provenant desdits moyens de fragilisation (5). When the transverse weakening line (8) is produced, and with reference to FIG. 4, the winding of the textile strip (2) is restarted. In other words, the spool (3) is rotated again and at a controlled speed so as to wind the web (2) of textile around said spool (3). This operation must be done at controlled speed and tension so as not to generate too much tensile force on the strip (2) which could lead to its cutting along the line of weakness. The winding thus causes the displacement of the weakened line, and the winding is continued until this line reaches a desired position. The desired position is defined so as to leave the weakening line of the space generated by the weakening means (5) so that once the subsequent cut is made, it is easy to grasp the end of the strip (2). of textile not attached to the reel (3) receiving, that is to say the end of the strip (2) from said weakening means (5).
En référence à la figure 5, des moyens de pinçage (6) sont agencés en amont de la bobine (3) de réception. Ces moyens de pinçage (6) sont disposés de telle sorte qu'ils sont aptes à bloquer le déroulage de la bande (2) de textile en amont de la ligne de fragilisation. Ainsi, lorsque la ligne de fragilisation a atteint la position désirée, les moyens de pinçage (6) sont actionnés et pincent la bande (2) de textile, tout en continuant Γ entraînement en rotation de la bobine (3). Les moyens de pinçage (6) sont ainsi actionnables pour passer d'une position neutre dans laquelle ils ne gênent pas le déroulage de la bande à une position de pinçage dans laquelle ils sont en appui contre la bande (2) pour la pincer contre une contre-surface et empêcher son déroulement. L'entraînement en rotation de la bobine (3) génère alors une force de traction exercée sur la bande (2), laquelle force entraine la découpe de la bande (2) suivant la ligne transversale de fragilisation (8). With reference to FIG. 5, clamping means (6) are arranged upstream of the receiving coil (3). These clamping means (6) are arranged such that they are able to block unwinding of the textile strip (2) upstream of the weakening line. Thus, when the weakening line has reached the desired position, the clamping means (6) are actuated and clamp the web (2) of textile, while continuing Γ rotational drive of the coil (3). The clamping means (6) are thus operable to move from a neutral position in which they do not interfere with unwinding of the band at a clamping position in which they bear against the band (2) to pinch it against a against the surface and prevent its unfolding. The rotational drive of the spool (3) then generates a tensile force exerted on the strip (2), which force causes the cutting of the strip (2) along the transverse weakening line (8).
La découpe est rapide et propre, et ne nécessite aucune intervention d'un opérateur. Les moyens de pinçage (6) sont appropriés pour pincer la bande (2) et bloquer son déroulage. Ces moyens de pinçage (6) sont de tous types appropriés et sont par exemple disposés au niveau des moyens de fragilisation (5). The cutting is fast and clean, and requires no operator intervention. The clamping means (6) are suitable for clamping the band (2) and blocking its unwinding. These clamping means (6) are of any suitable type and are for example arranged at the level of the embrittlement means (5).
La force de traction est exercée par l'entraînement en rotation de la bobine (3) mais peut être exercée par tout autre moyen approprié. The pulling force is exerted by the rotational drive of the spool (3) but can be exerted by any other suitable means.
Ensuite, en référence à la figure 6, un bras de compression (7) est agencé pour appliquer une pression sur la largeur de la bobine (3) de réception. Ce bras de compression (7) se présente par exemple sous la forme d'un rouleau transversal (7a). Ainsi, l'entraînement en rotation de la bobine (3) est poursuivi sur au moins un tour, de manière à appliquer une pression, par l'intermédiaire du bras de compression (7), sur l'extrémité libre de la bande (2) attachée à la bobine (3) de réception. Cette pression permet d'écraser et de compacter ladite extrémité libre de la bande (2) pour empêcher son déroulage ultérieur inopiné. La bobine (3) est ainsi prête à être évacuée et remplacée par une nouvelle bobine (3) vide par exemple. Then, with reference to FIG. 6, a compression arm (7) is arranged to apply a pressure on the width of the receiving coil (3). This compression arm (7) is for example in the form of a transverse roller (7a). Thus, the rotational drive of the spool (3) is continued over at least one turn, so as to apply pressure, via the compression arm (7), to the free end of the web (2). ) attached to the receiving coil (3). This pressure makes it possible to crush and compact said free end of the band (2) to prevent its unwanted unwinding. The coil (3) is thus ready to be evacuated and replaced by a new empty coil (3) for example.
Comme il ressort de ce qui précède, l'invention fournit un procédé et un module (1) de découpage d'une bande (2) en textile non tissé dans un procédé d'enroulage de ladite bande (2) autour d'une bobine (3) de réception. Le procédé est rapide et efficace et ne nécessite aucune intervention d'un utilisateur. As is apparent from the foregoing, the invention provides a method and a module (1) for cutting a nonwoven fabric web (2) in a method of winding said web (2) around a web (3) reception. The process is fast and efficient and requires no user intervention.

Claims

REVENDICATIONS
Procédé de découpage d'une bande (2) de textile non tissé dans un procédé d'enroulage de ladite bande (2) autour d'une bobine (3) de réception entraînée en rotation, caractérisé en ce que ledit procédé comprend au moins les étapes consistant à : A method of cutting a nonwoven fabric web (2) in a method of winding said web (2) around a rotationally driven receiving roll (3), characterized in that said method comprises at least steps of:
- stopper l'enroulage de la bande (2) à découper en stoppant l'entraînement en rotation de la bobine (3) ;  - Stop the winding of the strip (2) to cut by stopping the rotation of the coil (3);
- réaliser une ligne transversale de fragilisation (8) sur la bande (2), en amont de la bobine (3) ;  - Making a transverse weakening line (8) on the strip (2), upstream of the coil (3);
- redémarrer l'enroulage à vitesse et tension contrôlées de la bande (2) en redémarrant l'entraînement en rotation à vitesse contrôlée de la bobine (3), de manière à déplacer ladite ligne de fragilisation ;  - restarting the winding at controlled speed and tension of the web (2) by restarting the controlled rotation rotation of the spool (3), so as to move said weakening line;
- bloquer la bande (2) en amont/aval de la ligne de fragilisation ;  - block the band (2) upstream / downstream of the weakening line;
- exercer une force de traction sur la bande (2) en aval/amont de la ligne de fragilisation pour découper définitivement la bande (2) suivant ladite ligne de fragilisation.  - Exert a tensile force on the strip (2) downstream / upstream of the weakening line to permanently cut the strip (2) along said line of weakening.
Procédé selon la revendication 1, caractérisé en ce que l'étape consistant à bloquer la bande (2) consiste à pincer la bande (2). Method according to claim 1, characterized in that the step of blocking the web (2) consists of clamping the web (2).
Procédé selon l'une des revendications précédentes, caractérisé en ce que l'étape consistant à exercer une force de traction sur la bande (2) consiste à continuer l'entraînement en rotation de la bobine (3). Method according to one of the preceding claims, characterized in that the step of exerting a traction force on the web (2) consists in continuing the rotational driving of the reel (3).
Procédé de découpage selon l'une des revendications précédentes, caractérisé en ce qu'il comprend, après le découpage de la bande (2), une étape consistant à appliquer un bras de compression (7) sur la largeur de la bobine (3), tout en continuant l'entraînement en rotation de la bobine (3) à vitesse contrôlée et sur au moins un tour pour compresser l'extrémité libre de la bande (2) de textile contre la bobine (3). Cutting method according to one of the preceding claims, characterized in that it comprises, after the cutting of the strip (2), a step of applying a compression arm (7) on the width of the coil (3) , while continuing the rotational drive of the reel (3) at a controlled speed and on at least one turn to compress the free end of the textile web (2) against the reel (3).
5. Procédé de découpage selon l'une des revendications précédentes, caractérisé en ce que l'étape consistant à réaliser une ligne de fragilisation consiste à réaliser une ligne de prédécoupe. 5. Cutting method according to one of the preceding claims, characterized in that the step of making a weakening line consists of producing a precut line.
6. Procédé de découpage selon la revendication 4, caractérisé en ce que l'étape consistant à appliquer un bras de compression (7) consiste à appliquer un rouleau transversal (7a). 7. Module (1) de découpage d'une bande (2) de textile non tissé dans un procédé d'enroulage de ladite bande (2) autour d'une bobine (3) de réception entraînée en rotation, caractérisé en ce qu'il comprend : 6. Cutting method according to claim 4, characterized in that the step of applying a compression arm (7) comprises applying a transverse roller (7a). 7. Module (1) for cutting a web (2) of non-woven fabric in a method of winding said web (2) around a rotationally driven receiving reel (3), characterized in that He understands :
- des moyens (5) aptes à réaliser, en amont de la bobine (3), une ligne de fragilisation transversale de ladite bande (2) ;  means (5) capable of producing, upstream of the coil (3), a transverse weakening line of said strip (2);
- des moyens (6) aptes à bloquer la bande (2) en amont/aval de la ligne de fragilisation, se présentent sous la forme de moyens actionnables pour venir pincer la bande (2) ;  - Means (6) capable of blocking the strip (2) upstream / downstream of the weakening line, are in the form of actuatable means to come to pinch the strip (2);
- des moyens aptes à exercer une force de traction sur la bande (2) en aval/amont de la ligne de fragilisation pour découper définitivement la bande suivant ladite ligne de fragilisation  means capable of exerting a tensile force on the strip (2) downstream / upstream of the weakening line to definitively cut the strip along said line of weakness
8. Module (1) selon la revendication 7, caractérisé en ce que les moyens aptes à exercer une traction sont constitués par les moyens permettant d'entraîner en rotation la bobine (3) présents dans le procédé d'enroulage de la bande (2). 8. Module (1) according to claim 7, characterized in that the means able to exert traction are constituted by the means for rotating the coil (3) present in the winding process of the strip (2). ).
9. Module (1) selon l'une des revendications 7 à 8, caractérisé en ce que les moyens (5) aptes à réaliser la ligne de fragilisation se présentent sous la forme d'une lame (5a) comprenant un profil en dents de scie. 9. Module (1) according to one of claims 7 to 8, characterized in that the means (5) adapted to achieve the line of weakness are in the form of a blade (5a) comprising a tooth profile. saw.
EP15715342.0A 2014-03-21 2015-03-18 Method and module for cutting a non-woven textile strip in a method for winding said strip about a rotatably driven receiving bobbin Active EP3119709B1 (en)

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FR1452397A FR3018795B1 (en) 2014-03-21 2014-03-21 METHOD AND MODULE FOR CUTTING A NON-WOVEN TEXTILE STRIP IN A METHOD OF WOUNDING SAID STRIP AROUND A ROTATION DRIVEN RECEIVING COIL
PCT/FR2015/050657 WO2015140466A1 (en) 2014-03-21 2015-03-18 Method and module for cutting a non-woven textile strip in a method for winding said strip about a rotatably driven receiving bobbin

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ITUA20163344A1 (en) 2016-05-11 2017-11-11 Celli Nonwovens Spa MACHINE AND METHOD FOR THE WINDING OF STRIPS OF MATTRESS WITH THE MEANS OF TRANSVERSAL CUTTING OF THE STRIPS AND ANCHORING OF THE STRIPES AT THE ANCHORING SOUL
IT201600108463A1 (en) 2016-10-27 2018-04-27 Celli Nonwovens Spa MACHINE AND METHOD FOR THE WINDING OF STRIPES OF MATTRESS MATCHING WITH MEANS FOR CROSS-CUTTING THE STRIPES AT THE END OF THE WINDING

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DE19519306A1 (en) * 1995-05-26 1996-11-28 Voith Sulzer Papiermasch Gmbh Method and device for the automatic cutting and winding of a paper web
DE29508732U1 (en) * 1995-05-26 1995-09-21 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Device for perforating a running paper web
ES2157651T3 (en) * 1998-04-07 2001-08-16 Techint Spa IMPROVED APPLIANCE FOR WRAPPING COMPRESSIBLE FIBER MATERIALS.
FR2861749B1 (en) * 2003-11-03 2005-12-16 Saint Gobain Vetrotex DEFORMABLE MATERIAL WITH FIBROUS REINFORCEMENT FOR THE MANUFACTURE OF THERMOPLASTIC MATRIX COMPOSITES
EP2067584A1 (en) * 2007-12-06 2009-06-10 M T C - Macchine Trasformazione Carta S.r.l. Rewinding machine with perforating means and method

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FR3018795B1 (en) 2016-05-27
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FR3018795A1 (en) 2015-09-25

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