EP0424290B1 - Positioning device for a product in the form of a flexible sheet - Google Patents

Positioning device for a product in the form of a flexible sheet Download PDF

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Publication number
EP0424290B1
EP0424290B1 EP90420447A EP90420447A EP0424290B1 EP 0424290 B1 EP0424290 B1 EP 0424290B1 EP 90420447 A EP90420447 A EP 90420447A EP 90420447 A EP90420447 A EP 90420447A EP 0424290 B1 EP0424290 B1 EP 0424290B1
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EP
European Patent Office
Prior art keywords
sheet
rollers
roller
situated
pusher
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP90420447A
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German (de)
French (fr)
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EP0424290A1 (en
Inventor
Michel Baboz
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JEAN MICHEL SA
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JEAN MICHEL SA
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Publication date
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Publication of EP0424290A1 publication Critical patent/EP0424290A1/en
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F67/00—Details of ironing machines provided for in groups D06F61/00, D06F63/00, or D06F65/00
    • D06F67/04—Arrangements for feeding or spreading the linen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H9/00—Registering, e.g. orientating, articles; Devices therefor
    • B65H9/10—Pusher and like movable registers; Pusher or gripper devices which move articles into registered position
    • B65H9/103—Pusher and like movable registers; Pusher or gripper devices which move articles into registered position acting by friction or suction on the article for pushing or pulling it into registered position, e.g. against a stop
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H9/00—Registering, e.g. orientating, articles; Devices therefor
    • B65H9/20—Assisting by photoelectric, sonic, or pneumatic indicators

Definitions

  • the present invention relates to a machine for positioning a product in the form of a flexible sheet.
  • Industrial processing of sheet-shaped products involves providing, between the different processing units, one or more devices making it possible to position the product correctly so that it can automatically switch from one processing unit to another.
  • This type of device rather rudimentary, is slow to use and requires the presence of one or two operators.
  • the motors act to cause the tube to twist until the edge of one of the strands of the sheet is brought to the level of the photocells.
  • This device has the drawback of being complex and therefore expensive to produce, since it requires the production of a specific tube.
  • the present invention aims to remedy this drawback by providing a device for production and simple use and of moderate cost.
  • the device comprises at least one clamp for gripping the sheet and engaging it astride one or more horizontal and parallel rollers, means for causing the opening of the clamp when the sheet is fully engaged on the or the rollers in order to deposit it thereon or these, presence detectors of one of the edges of the sheet aligned horizontally at the desired height of positioning of this edge of the sheet, and in which on each roll is associated a motor intended for its rotation drive as a function of the signal transmitted by the presence detectors sensitive to the position of the edge of the sheet located nearby.
  • this device comprises one or more rollers at least partially covered with non-slip material, at least one clamp capable of enclosing the leaf strand located on the side opposite to that where the presence detectors are located and a shaped pusher horizontal blade, movable in a horizontal plane and on the ends of which act, independently of one another, means for its operation, the presence detectors being positioned close enough to the roller (s) so that several of them are obligatorily sensitized by the sheet after its deposit and being, moreover, arranged to, at first, control the drive in rotation of the roller (s) until one of them is desensitized, which has the effect of stopping the rotation of the roller (s) to, in a second step, order the closing of the clamp (s) and to, in a third step, order one of the hubs ns of operation of the pusher which moves it horizontally in the direction of the sheet from its rest position, in which one of its edges is close to the sheet, to an active position in which this same edge presses on the sheet to
  • this device comprises two parallel rollers under which the pusher is located, the operating members of which are constituted by jacks, and a clamp comprising a movable jaw situated on the same side of the sheet as the pusher, and a fixed jaw located on the other side of the sheet.
  • the fixed jaw of the clamp consists of a part of the frame of the processing unit in front of which hangs the strand of the sheet whose position must be corrected and whose movable jaw consists of a horizontal bar carried by the upper ends of at least two substantially vertical lateral arms and articulated, by their lower end, to coaxial horizontal pins allowing them to pivot between a rest position in which the aforementioned bar is kept away from the part of the unit frame treatment serving as a fixed jaw, and an active position in which this bar is applied against this part of the frame so as to pinch the corresponding strand of the sheet, motor means being provided for actuating the arms in one direction or the other .
  • the means provided for transferring the sheet to the processing unit are constituted by a presence detector situated between the other presence detectors and the roller which is closest thereto, which controls the rotational drive of the rollers until it ceases to be sensitized by the sheet, at least one clamp capable of immobilizing the strand of the sheet situated on the side opposite to that where the presence detectors are located and a pusher in the form of a horizontal blade located under the roller (s), which is movable in translation in a horizontal plane and whose stroke is such that it causes the sheet to slide on the roller (s) until its free edge, previously horizontal, is engaged in the processing unit.
  • the device comprises one or more clamps capable of enclosing the strand of the sheet situated on the side opposite to that where the presence detectors are located, both during the setting operation.
  • the pusher is therefore firstly driven in a rotational movement around a vertical axis passing through one of its ends, then, after correction, in a translational movement.
  • the presence detectors of the edge of the leaf strand are constituted by photoelectric cells.
  • this device comprises two clamps for engaging the sheet on the roller or rollers, carried by a motorized endless band, which are located opposite one another. This improves the speed of the machine.
  • this device comprises an inclined ramp facilitating the engagement of the sheet on the rollers.
  • Figures 1 to 3 show from different angles the device 1 according to the invention which comprises a frame 2 on which are mounted two rollers 3 horizontal and parallel and two clamps 4, carried by a motorized endless belt 5 and located opposite one of the other, which are intended to grip a sheet 6 so as to engage it astride the rollers 3, an inclined ramp 7 facilitating this engagement.
  • Means (not shown) are provided to cause the opening of the clamps 4 when the sheet 6 is fully engaged on the rollers 3 in order to deposit it thereon.
  • the device 1 also comprises a clamp 9 capable of enclosing one 6a of the strands of the sheet 6, the fixed jaw of which consists of a part 10a of the frame 10 of a processing unit 11 located near the device 1 (not shown in FIGS. 1 and 3) and the movable jaw of which is constituted by a horizontal bar 12 carried by the upper ends of two substantially vertical lateral arms 13 and articulated, by their lower end on coaxial horizontal pins 14 integral with the frame 2.
  • a pusher 15 in the form of a horizontal blade, movable in a horizontal plane and on the ends of which act, independently of one another, jacks 16a and 16b which actuate it, is located under the rollers 3 and above the clamp 9. In the rest position, the edge 15a of the pusher 15 is located near the sheet 6.
  • the device 1 comprises photoelectric cells 19 aligned horizontally and located close enough to the rollers 3 so that several of them are necessarily sensitized by the sheet 6 after it has been deposited.
  • a cell 20 is located between cells 19 and the nearest roller 3.
  • the cells 19 are arranged to control the action of motor means (not shown) for driving the rollers 3 in rotation, motor means (not shown) for actuating the arms 13 in one direction or the other to open or close the clamp 9, as well as that of the jacks 16a and 16b.
  • the cell 20 is, in turn, arranged to control the rotation drive of the rollers 3 until it is desensitized.
  • the sheet 6 need not obscure all the cells 19.
  • the number of those which are desensitized by the sheet 6 varies according to the length thereof, and the means of calculation and processing of appropriate information (not shown) are provided to take into account, in the actuation of above-mentioned motor means during the operation of correcting the positioning of the sheet 6 which will be described later, only information transmitted by the cells 19 previously sensitized by the sheet 6.
  • the processing unit 11 comprises means for taking care of the edge of the sheet 6 ensuring its transfer from the device 1, including a conveyor belt 22 and motorized rollers 23 vertically movable to come into contact with the sheet 6.
  • the set of figures represents the device 1 during several successive phases of operation.
  • the same elements as those previously described are found and are designated by the same references.
  • One of the edges of the sheet 6 is gripped by one of the clamps 4 which the endless belt 5 moves so as to engage the sheet 6 astride the rollers 3, so that its strands 6a and 6b hang from one side and other of the rollers 3.
  • the sheet 6 is deposited on the rollers 3 in the position shown in phantom in FIG. 3. In this position, a certain number of cells 19 are obscured, this which causes the actuation of the drive means for rotating the rollers 3 which move the sheet 6 until the edge of its strand 6b ceases to hide one of the cells 19, this position being shown in solid lines on Figure 3.
  • the actuating cylinder is that located on the opposite side to that where the cell 19 is located which has ceased to be obscured. If the edge of the sheet 6 had been tilted in the other direction, it is the jack 16b which would have entered into action.
  • the pusher 15 presses on the sheet 6 in order to cause it to slide on the rollers 3 until the edge of its strand 6b has desensitized all the other cells 19 after having reached its correct horizontal position, this position being represented by Figure 6.
  • the jack 16a When all the cells 19 are desensitized, the jack 16a returns the pusher 15 to its initial position, which, when it is reached, controls the opening of the clamp 9 so that the loosening of the sheet is absorbed by the strand 6a located on the opposite side to the cells 19, so that the strands 6a and 6b hang on either side of the rollers 3.
  • the opening of the clamp 9 controls the rotation drive of the rollers 3 until the cell 20 is desensitized (FIG. 7), which causes the clamp 9 to close and the pusher 15 to move in a movement of translation under the action of jacks 16a and 16b whose pistons have an identical stroke, the stroke of the pusher 15 being such that it slides the sheet 6 on the rollers 3 until its free edge is engaged in the processing unit thanks to the conveyor belt 22 and the rollers 23.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Sewing Machines And Sewing (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Cleaning In General (AREA)
  • Registering Or Overturning Sheets (AREA)
  • Advancing Webs (AREA)

Abstract

This device is of the type comprising a plurality of rollers (3), on which a sheet (6) is engaged astride them, and detectors (13) of the presence of one of the edges of the sheet (6), which are aligned horizontally at the desired positioning height of this edge. According to the invention, this device includes a pusher (15), on which act operating means (16a, 16b) displacing it in a rotational movement about a vertical axis passing through one of its ends, so that it bears on the sheet in order to cause it to slide on the rollers (3) until its free edge has desensitised all the presence detectors (19), after it has reached its desired correct position. The invention is used particularly in the sector of industrial laundry. <IMAGE>

Description

La présente invention concerne une machine de positionnement d'un produit en forme de feuille souple.The present invention relates to a machine for positioning a product in the form of a flexible sheet.

Le traitement industriel de produits en forme de feuille implique de prévoir, entre les différentes unités de traitement, un ou plusieurs dispositifs permettant de positionner le produit de manière correcte pour qu'il puisse passer automatiquement d'une unité de traitement à une autre.Industrial processing of sheet-shaped products involves providing, between the different processing units, one or more devices making it possible to position the product correctly so that it can automatically switch from one processing unit to another.

Dans le domaine plus particulier de la blanchisserie, pour qu'une pièce de linge, telle qu'un drap, puisse passer dans une unité d'étirage, de pliage ou de repassage, il faut que le bord par lequel elle y est introduite se présente perpendiculairement à son sens d'engagement dans l'unité.In the more specific field of laundry, for a piece of laundry, such as a sheet, to pass through a stretching, folding or ironing unit, the edge by which it is introduced there must present perpendicular to its direction of engagement in the unit.

Pour réaliser ce positionnement, on sait saisir la pièce de linge par au moins l'un de ses coins au moyen d'au moins une pince, et la maintenir tendue tout en assurant son déplacement pour l'amener devant le système d'engagement de l'unité. Le maintien de la pièce pendant le déplacement de la ou des pinces n'est pas très facile et ce dispositif n'a qu'un faible rendement.To achieve this positioning, it is known to grasp the piece of laundry by at least one of its corners by means of at least one clamp, and keep it taut while ensuring its movement to bring it in front of the engagement system of unity. Maintaining the part during the movement of the clamp (s) is not very easy and this device has only a low yield.

Il est aussi connu d'employer des dispositifs comportant un ou plusieurs rouleaux horizontaux et parallèles et d'engager une pièce de linge, telle qu'un drap, à cheval sur le ou les rouleaux, dont la rotation, actionnée manuellement par un opérateur, permet d'amener dans une position horizontale les bords des brins du drap qui pendent de part et d'autre du ou des rouleaux. Grâce à ce positionnement, le drap se présentera de manière correcte au système d'engagement de l'unité de traitement.It is also known to employ devices comprising one or more horizontal and parallel rollers and to engage a piece of linen, such as a sheet, straddling the roller or rollers, the rotation of which, manually actuated by an operator, allows to bring in a horizontal position the edges of the strands of the sheet which hang on either side of the roller (s). Thanks to this positioning, the sheet will present itself correctly to the engagement system of the processing unit.

Ce type de dispositif, plutôt rudimentaire, est lent d'utilisation et nécessite la présence d'un ou deux opérateurs.This type of device, rather rudimentary, is slow to use and requires the presence of one or two operators.

Pour remédier à ces inconvénients, il a été proposé, dans la demande de brevet européen N° 0 266 820, un dispositif dans lequel le ou les rouleaux précités sont remplacés par un tube constitué par l'enroulement en spirale d'une bande recouverte d'un matériau flexible. Chaque extrémité du tube est solidaire en rotation d'un tourillon coaxial au tube et relié à un moteur d'entraînement en rotation commandé par des cellules photo-électriques alignées horizontalement à la hauteur désirée de positionnement du bord de la feuille. Après que l'un des bords de la feuille ait été saisi par une pince mobile, et que la feuille ait été déposée par la pince sur le tube de manière à ce que ses bords latéraux soient à égale distance des extrémités du tube, les moteurs agissent afin de provoquer la torsion du tube jusqu'à ce que le bord de l'un des brins de la feuille soit amené au niveau des cellules photo-électriques.To remedy these drawbacks, it has been proposed in European patent application No. 0 266 820, a device in which the aforementioned roller or rollers are replaced by a tube formed by the spiral winding of a strip covered with '' a flexible material. Each end of the tube is integral in rotation with a pin coaxial with the tube and connected to a rotary drive motor controlled by photoelectric cells aligned horizontally at the desired height of positioning of the edge of the sheet. After one of the edges of the sheet has been gripped by a movable clamp, and the sheet has been deposited by the clamp on the tube so that its lateral edges are equidistant from the ends of the tube, the motors act to cause the tube to twist until the edge of one of the strands of the sheet is brought to the level of the photocells.

Ce dispositif présente l'inconvénient d'être complexe et donc cher à réaliser, puisqu'il nécessite la réalisation d'un tube spécifique.This device has the drawback of being complex and therefore expensive to produce, since it requires the production of a specific tube.

La présente invention vise à remédier à cet inconvénient en fournissant un dispositif de réalisation et d'utilisation simple et d'un coût modéré.The present invention aims to remedy this drawback by providing a device for production and simple use and of moderate cost.

A cette fin, le dispositif comporte au moins une pince permettant de saisir la feuille et de l'engager à cheval sur un ou plusieurs rouleaux horizontaux et parallèles, des moyens pour provoquer l'ouverture de la pince lorsque la feuille est totalement engagée sur le ou les rouleaux afin de la déposer sur celui-ci ou ceux-ci, des détecteurs de présence de l'un des bords de la feuille alignés horizontalement à la hauteur désirée de positionnement de ce bord de la feuille, et dans lequel à chaque rouleau est associé un moteur destiné à son entraînement en rotation en fonction du signal transmis par les détecteurs de présence sensibles à la position du bord de la feuille situé à proximité.To this end, the device comprises at least one clamp for gripping the sheet and engaging it astride one or more horizontal and parallel rollers, means for causing the opening of the clamp when the sheet is fully engaged on the or the rollers in order to deposit it thereon or these, presence detectors of one of the edges of the sheet aligned horizontally at the desired height of positioning of this edge of the sheet, and in which on each roll is associated a motor intended for its rotation drive as a function of the signal transmitted by the presence detectors sensitive to the position of the edge of the sheet located nearby.

Selon l'invention, ce dispositif comprend un ou plusieurs rouleaux au moins partiellement recouverts de matériau antidérapant, au moins une pince apte à enserrer le brin de la feuille situé du côté opposé à celui où se trouvent les détecteurs de présence et un poussoir en forme de lame horizontale, mobile dans un plan horizontal et sur les extrémités duquel agissent, indépendamment l'un de l'autre, des moyens pour sa manoeuvre, les détecteurs de présence étant positionnés suffisamment près du ou des rouleaux pour que plusieurs d'entre eux soient obligatoirement sensibilisés par la feuille après son dépôt et étant, en outre, agencés pour, dans un premier temps, commander l'entraînement en rotation du ou des rouleaux jusqu'à ce que l'un d'entre eux soit désensibilisé, ce qui a pour effet d'arrêter la rotation du ou des rouleaux pour, dans un deuxième temps, commander la fermeture de la ou des pinces et pour, dans un troisième temps, commander l'un des moyens de manoeuvre du poussoir qui le déplace horizontalement en direction de la feuille depuis sa position de repos, dans laquelle l'un de ses bords est à proximité de la feuille, vers une position active dans laquelle ce même bord appuie sur la feuille à un niveau intermédiaire entre la ou les pinces et le rouleau qui en est le plus proche, le déplacement s'effectuant suivant un mouvement de rotation autour d'un axe vertical passant par l'une des extrémités du poussoir de manière à appuyer sur la feuille afin de provoquer son glissement sur le ou les rouleaux jusqu'à ce que son bord libre ait désensibilisé tous les autres détecteurs de présence après avoir atteint sa position horizontale correcte désirée, ce qui a pour effet d'actionner le moyen de manoeuvre du poussoir qui a été auparavant sollicité pour ramener le poussoir dans sa position de repos, et de commander l'ouverture de la ou des pinces de manière à ce que le relâchement de la feuille soit absorbé par le brin situé du côté opposé aux détecteurs afin que les deux brins de la feuille pendent de part et d'autre du ou des rouleaux, des moyens appropriés étant prévus pour transférer la feuille ainsi positionnée vers une unité de traitement.According to the invention, this device comprises one or more rollers at least partially covered with non-slip material, at least one clamp capable of enclosing the leaf strand located on the side opposite to that where the presence detectors are located and a shaped pusher horizontal blade, movable in a horizontal plane and on the ends of which act, independently of one another, means for its operation, the presence detectors being positioned close enough to the roller (s) so that several of them are obligatorily sensitized by the sheet after its deposit and being, moreover, arranged to, at first, control the drive in rotation of the roller (s) until one of them is desensitized, which has the effect of stopping the rotation of the roller (s) to, in a second step, order the closing of the clamp (s) and to, in a third step, order one of the hubs ns of operation of the pusher which moves it horizontally in the direction of the sheet from its rest position, in which one of its edges is close to the sheet, to an active position in which this same edge presses on the sheet to a intermediate level between the gripper (s) and the nearest roller, the movement taking place in a rotational movement around a vertical axis passing through one of the ends of the pusher so as to press the sheet in order to cause it to slide on the roller (s) until its free edge has desensitized all the other presence detectors after reaching its horizontal position correct desired, which has the effect of actuating the operating means of the pusher which has been previously requested to return the pusher to its rest position, and of controlling the opening of the clamp (s) so that the release of the sheet is absorbed by the strand located on the side opposite to the detectors so that the two strands of the sheet hang on either side of the roller (s), suitable means being provided for transferring the sheet thus positioned towards a processing unit .

Selon une forme préférée de réalisation de l'invention, ce dispositif comprend deux rouleaux parallèles sous lesquels est situé le poussoir, dont les organes de manoeuvre sont constitués par des vérins, et une pince comprenant un mors mobile situé du même côté de la feuille que le poussoir, et un mors fixe situé de l'autre côté de la feuille.According to a preferred embodiment of the invention, this device comprises two parallel rollers under which the pusher is located, the operating members of which are constituted by jacks, and a clamp comprising a movable jaw situated on the same side of the sheet as the pusher, and a fixed jaw located on the other side of the sheet.

De préférence, le mors fixe de la pince est constitué par une partie du bâti de l'unité de traitement devant laquelle pend le brin de la feuille dont la position doit être corrigée et dont le mors mobile est constitué par une barre horizontale portée par les extrémités supérieures d'au moins deux bras latéraux sensiblement verticaux et articulés, par leur extrémité inférieure, sur des tourillons horizontaux coaxiaux leur permettant de pivoter entre une position de repos dans laquelle la barre précitée est maintenue éloignée de la partie du bâti de l'unité de traitement servant de mors fixe, et une position active dans laquelle cette barre est appliquée contre cette partie du bâti de manière à pincer le brin correspondant de la feuille, des moyens moteurs étant prévus pour actionner les bras dans un sens ou dans l'autre.Preferably, the fixed jaw of the clamp consists of a part of the frame of the processing unit in front of which hangs the strand of the sheet whose position must be corrected and whose movable jaw consists of a horizontal bar carried by the upper ends of at least two substantially vertical lateral arms and articulated, by their lower end, to coaxial horizontal pins allowing them to pivot between a rest position in which the aforementioned bar is kept away from the part of the unit frame treatment serving as a fixed jaw, and an active position in which this bar is applied against this part of the frame so as to pinch the corresponding strand of the sheet, motor means being provided for actuating the arms in one direction or the other .

Selon une forme de réalisation de l'invention, les moyens prévus pour le transfert de la feuille vers l'unité de traitement sont constitués par un détecteur de présence situé entre les autres détecteurs de présence et le rouleau qui en est le plus proche, qui commande l'entraînement en rotation des rouleaux jusqu'à ce qu'il cesse d'être sensibilisé par la feuille, au moins une pince apte a immobiliser le brin de la feuille situé du côté opposé à celui où se trouvent les détecteurs de présence et un poussoir en forme de lame horizontale situé sous le ou les rouleaux, qui est mobile en translation dans un plan horizontal et dont la course est telle qu'il fait glisser la feuille sur le ou les rouleaux jusqu'à ce que son bord libre, préalablement mis à l'horizontale, soit engagé dans l'unité de traitement.According to one embodiment of the invention, the means provided for transferring the sheet to the processing unit are constituted by a presence detector situated between the other presence detectors and the roller which is closest thereto, which controls the rotational drive of the rollers until it ceases to be sensitized by the sheet, at least one clamp capable of immobilizing the strand of the sheet situated on the side opposite to that where the presence detectors are located and a pusher in the form of a horizontal blade located under the roller (s), which is movable in translation in a horizontal plane and whose stroke is such that it causes the sheet to slide on the roller (s) until its free edge, previously horizontal, is engaged in the processing unit.

Selon une forme possible de réalisation de l'invention, le dispositif comprend une ou plusieurs pinces aptes à enserrer le brin de la feuille situé du côté opposé à celui où se trouvent les détecteurs de présence, tant lors de l'opération de mise a l'horizontalité des bords des brins de la feuille, qu'au cours de celle de transfert de la feuille vers l'unité de traitement, et un poussoir en forme de lame horizontale situé sous le ou les rouleaux, qui est mobile dans un plan horizontal et qui est apte à être animé de deux mouvements différents dont l'un permet la mise à l'horizontalité des bords des brins de la feuille, et dont l'autre permet le transfert de celle-ci vers l'unité de traitement.According to a possible embodiment of the invention, the device comprises one or more clamps capable of enclosing the strand of the sheet situated on the side opposite to that where the presence detectors are located, both during the setting operation. horizontality of the edges of the strands of the sheet, that during that of transfer of the sheet to the processing unit, and a pusher in the form of a horizontal blade situated under the roller (s), which is movable in a horizontal plane and which is capable of being animated by two different movements, one of which allows the horizontality of the edges of the strands of the sheet, and the other of which allows the transfer thereof to the processing unit.

Le poussoir est donc d'abord animé d'un mouvement de rotation autour d'un axe vertical passant par l'une de ses extrémités, puis, après correction, d'un mouvement de translation.The pusher is therefore firstly driven in a rotational movement around a vertical axis passing through one of its ends, then, after correction, in a translational movement.

Avantageusement, plusieurs bandes sans fin dont la surface extérieure est antidérapante sont engagées autour de chacun des rouleaux.Advantageously, several endless belts whose outer surface is non-slip are engaged around each of the rollers.

Ces bandes empêchent le glissement de la feuille sur les rouleaux non provoqué par le poussoir.These strips prevent the sheet from sliding on the rollers not caused by the pusher.

Suivant une forme d'exécution simple de l'invention, les détecteurs de présence du bord du brin de la feuille sont constitués par des cellules photo-électriques.According to a simple embodiment of the invention, the presence detectors of the edge of the leaf strand are constituted by photoelectric cells.

Selon une caractéristique, ce dispositif comprend deux pinces pour l'engagement de la feuille sur le ou les rouleaux, portées par une bande sans fin motorisée, qui sont situées à l'opposé l'une de l'autre. Ceci améliore la cadence de la machine.According to one characteristic, this device comprises two clamps for engaging the sheet on the roller or rollers, carried by a motorized endless band, which are located opposite one another. This improves the speed of the machine.

Selon une autre caractéristique, ce dispositif comprend une rampe inclinée facilitant l'engagement de la feuille sur les rouleaux.According to another characteristic, this device comprises an inclined ramp facilitating the engagement of the sheet on the rollers.

De toute façon, l'invention sera bien comprise à l'aide de la description qui suit, en référence au dessin schématique annexé représentant, à titre d'exemple non limitatif, une forme de réalisation préférée du dispositif selon l'invention :

  • Figures 1, 3, 6 en sont des vues de côté au cours de trois phases différentes de fonctionnement ;
  • Figure 2 en est une vue en coupe selon II-II de figure 3 ;
  • Figures 4, 7, 8 sont des vues similaires à la figure 2 au cours de trois phases différentes de fonctionnement ; et
  • Figure 5 en est une vue de dessus.
In any case, the invention will be clearly understood with the aid of the description which follows, with reference to the appended diagrammatic drawing representing, by way of nonlimiting example, a preferred embodiment of the device according to the invention:
  • Figures 1, 3, 6 are side views during three different phases of operation;
  • Figure 2 is a sectional view along II-II of Figure 3;
  • Figures 4, 7, 8 are views similar to Figure 2 during three different phases of operation; and
  • Figure 5 is a top view.

Les figures 1 à 3 représentent sous différents angles le dispositif 1 selon l'invention qui comprend un bâti 2 sur lequel sont montés deux rouleaux 3 horizontaux et parallèles et deux pinces 4, portées par une bande sans fin motorisée 5 et situées à l'opposé l'une de l'autre, qui sont destinées à saisir une feuille 6 de manière à l'engager à cheval sur les rouleaux 3, une rampe inclinée 7 facilitant cet engagement. Des moyens (non représentés) sont prévus pour provoquer l'ouverture des pinces 4 lorsque la feuille 6 est totalement engagée sur les rouleaux 3 afin de la déposer sur ceux-ci.Figures 1 to 3 show from different angles the device 1 according to the invention which comprises a frame 2 on which are mounted two rollers 3 horizontal and parallel and two clamps 4, carried by a motorized endless belt 5 and located opposite one of the other, which are intended to grip a sheet 6 so as to engage it astride the rollers 3, an inclined ramp 7 facilitating this engagement. Means (not shown) are provided to cause the opening of the clamps 4 when the sheet 6 is fully engaged on the rollers 3 in order to deposit it thereon.

Le dispositif 1 comprend aussi une pince 9 apte à enserrer l'un 6a des brins de la feuille 6, dont le mors fixe est constitué par une partie 10a du bâti 10 d'une unité de traitement 11 située à proximité du dispositif 1 (non représentée sur les figures 1 et 3) et dont le mors mobile est constitué par une barre horizontale 12 portée par les extrémités supérieures de deux bras latéraux 13 sensiblement verticaux et articulés, par leur extrémité inférieure sur des tourillons horizontaux coaxiaux 14 solidaires du bâti 2. De plus, un poussoir 15 en forme de lame horizontale, mobile dans un plan horizontal et sur les extrémités duquel agissent, indépendamment l'un de l'autre, des vérins 16a et 16b qui l'actionnent, est situé sous les rouleaux 3 et au-dessus de la pince 9. En position de repos, le bord 15a du poussoir 15 est situé à proximité de la feuille 6.The device 1 also comprises a clamp 9 capable of enclosing one 6a of the strands of the sheet 6, the fixed jaw of which consists of a part 10a of the frame 10 of a processing unit 11 located near the device 1 (not shown in FIGS. 1 and 3) and the movable jaw of which is constituted by a horizontal bar 12 carried by the upper ends of two substantially vertical lateral arms 13 and articulated, by their lower end on coaxial horizontal pins 14 integral with the frame 2. In addition, a pusher 15 in the form of a horizontal blade, movable in a horizontal plane and on the ends of which act, independently of one another, jacks 16a and 16b which actuate it, is located under the rollers 3 and above the clamp 9. In the rest position, the edge 15a of the pusher 15 is located near the sheet 6.

Par ailleurs, le dispositif 1 comprend des cellules photo-électriques 19 alignées horizontalement et situées suffisamment près des rouleaux 3 pour que plusieurs d'entre elles soient obligatoirement sensibilisées par la feuille 6 après son dépôt. Une cellule 20 est située entre les cellules 19 et le rouleau 3 le plus proche. Les cellules 19 sont agencées pour commander l'action de moyens moteurs (non représentés) d'entraînement en rotation des rouleaux 3, de moyens moteurs (non représentés) d'actionnement des bras 13 dans un sens ou dans l'autre pour ouvrir ou fermer la pince 9, ainsi que celle des vérins 16a et 16b. Le cellule 20 est, quant à elle, agencée pour commander l'entraînement en rotation des rouleaux 3 jusqu'à ce qu'elle soit désensibilisée.Furthermore, the device 1 comprises photoelectric cells 19 aligned horizontally and located close enough to the rollers 3 so that several of them are necessarily sensitized by the sheet 6 after it has been deposited. A cell 20 is located between cells 19 and the nearest roller 3. The cells 19 are arranged to control the action of motor means (not shown) for driving the rollers 3 in rotation, motor means (not shown) for actuating the arms 13 in one direction or the other to open or close the clamp 9, as well as that of the jacks 16a and 16b. The cell 20 is, in turn, arranged to control the rotation drive of the rollers 3 until it is desensitized.

Il est visible sur la figure 3 qu'il n'est pas nécessaire que la feuille 6 occulte toutes les cellules 19. Le nombre de celles qui sont désensibilisées par la feuille 6 varie en fonction de la longueur de celle-ci, et des moyens de calcul et de traitement d'informations appropriés (non représentés) sont prévus pour ne tenir compte, dans l'actionnement des moyens moteurs précités lors de l'opération de correction du positionnement de la feuille 6 qui sera décrite plus loin, que des informations transmises par les cellules 19 préalablement sensibilisées par la feuille 6.It can be seen in FIG. 3 that the sheet 6 need not obscure all the cells 19. The number of those which are desensitized by the sheet 6 varies according to the length thereof, and the means of calculation and processing of appropriate information (not shown) are provided to take into account, in the actuation of above-mentioned motor means during the operation of correcting the positioning of the sheet 6 which will be described later, only information transmitted by the cells 19 previously sensitized by the sheet 6.

En outre, des bandes sans fin 21, dont la surface extérieure est antidérapante, sont engagées autour de chacun des rouleaux 3. Par ailleurs, l'unité de traitement 11 comporte des moyens de prise en charge du bord de la feuille 6 assurant son transfert depuis le dispositif 1, incluant un tapis roulant 22 et des galets 23 motorisés déplaçables verticalement pour venir au contact de la feuille 6.In addition, endless belts 21, the external surface of which is non-slip, are engaged around each of the rollers 3. Furthermore, the processing unit 11 comprises means for taking care of the edge of the sheet 6 ensuring its transfer from the device 1, including a conveyor belt 22 and motorized rollers 23 vertically movable to come into contact with the sheet 6.

L'ensemble des figures représente le dispositif 1 au cours de plusieurs phases successives de fonctionnement. Dans ces figures, les mêmes éléments que ceux précédemment décrits se retrouvent et sont désignés par les mêmes références.The set of figures represents the device 1 during several successive phases of operation. In these figures, the same elements as those previously described are found and are designated by the same references.

L'un des bords de la feuille 6 est saisi par l'une des pinces 4 que la bande sans fin 5 déplace de manière à engager la feuille 6 à cheval sur les rouleaux 3, de sorte que ses brins 6a et 6b pendent de part et d'autre des rouleaux 3. Après ouverture de la pince 4, la feuille 6 est déposée sur les rouleaux 3 dans la position représentée en traits mixtes sur la figure 3. Dans cette position, un certain nombre de cellules 19 sont occultées, ce qui provoque l'actionnement des moyens moteurs d'entraînement en rotation des rouleaux 3 qui déplacent la feuille 6 jusqu'à ce que le bord de son brin 6b cesse de masquer l'une des cellules 19, cette position étant représentée en traits pleins sur la figure 3. Ceci a pour effet d'arrêter la rotation des rouleaux 3 et sollicite les moyens moteurs prévus pour actionner les bras 13 de manière à amener ces derniers dans leur position active dans laquelle la barre 12 est appliquée contre la partie 10a de l'unité de traitement 11. La pince 9 est donc fermée et immobilise le brin 6a de la feuille 6 (figure 4). Les cellules 19 encore occultées commandent ensuite l'action du vérin 16a qui déplace horizontalement le poussoir 15 en direction de la feuille 6 depuis sa position de repos vers une position active représentée par les figures 4 et 5 dans laquelle son bord 15a appuie sur la feuille 6 à un niveau intermédiaire entre la pince 9 et le rouleau 3 le plus proche. L'autre vérin 16b restant immobile, le poussoir 15 est donc animé d'un mouvement de rotation autour d'un axe vertical passant par son extrémité située du côté du vérin 16b.One of the edges of the sheet 6 is gripped by one of the clamps 4 which the endless belt 5 moves so as to engage the sheet 6 astride the rollers 3, so that its strands 6a and 6b hang from one side and other of the rollers 3. After opening of the clamp 4, the sheet 6 is deposited on the rollers 3 in the position shown in phantom in FIG. 3. In this position, a certain number of cells 19 are obscured, this which causes the actuation of the drive means for rotating the rollers 3 which move the sheet 6 until the edge of its strand 6b ceases to hide one of the cells 19, this position being shown in solid lines on Figure 3. This has the effect of stopping the rotation of the rollers 3 and stresses the motor means provided for actuating the arms 13 so as to bring the latter into their active position in which the bar 12 is applied against the part 10a of the processing unit 11. The clamp 9 is therefore closed and immobilizes the strand 6a of the sheet 6 (FIG. 4). The cells 19 still obscured then control the action of the jack 16a which horizontally displaces the pusher 15 in the direction of the sheet 6 from its rest position towards an active position represented by FIGS. 4 and 5 in which its edge 15a presses on the sheet 6 at an intermediate level between the clamp 9 and the nearest roller 3. The other jack 16b remaining stationary, the pusher 15 is therefore driven in a rotational movement about a vertical axis passing through its end located on the side of the jack 16b.

Il va de soi que le vérin qui agit est celui situé du côté opposé à celui où se trouve la cellule 19 qui a cessé d'être occultée. Si le bord de la feuille 6 avait été incliné dans l'autre sens, c'est le vérin 16b qui serait entré en action.It goes without saying that the actuating cylinder is that located on the opposite side to that where the cell 19 is located which has ceased to be obscured. If the edge of the sheet 6 had been tilted in the other direction, it is the jack 16b which would have entered into action.

Le poussoir 15 exerce un appui sur la feuille 6 afin de provoquer son glissement sur les rouleaux 3 jusqu'à ce que le bord de son brin 6b ait désensibilisé toutes les autres cellules 19 après avoir atteint sa position horizontale correcte, cette position étant représentée par la figure 6.The pusher 15 presses on the sheet 6 in order to cause it to slide on the rollers 3 until the edge of its strand 6b has desensitized all the other cells 19 after having reached its correct horizontal position, this position being represented by Figure 6.

Lorsque toutes les cellules 19 sont désensibilisées, le vérin 16a ramène le poussoir 15 dans sa position initiale, qui, lorsqu'elle est atteinte, commande l'ouverture de la pince 9 de manière à ce que le relâchement de la feuille soit absorbé par le brin 6a situé du côté opposé aux cellules 19, afin que les brins 6a et 6b pendent de part et d'autre des rouleaux 3.When all the cells 19 are desensitized, the jack 16a returns the pusher 15 to its initial position, which, when it is reached, controls the opening of the clamp 9 so that the loosening of the sheet is absorbed by the strand 6a located on the opposite side to the cells 19, so that the strands 6a and 6b hang on either side of the rollers 3.

L'ouverture de la pince 9 commande l'entraînement en rotation des rouleaux 3 jusqu'à ce que la cellule 20 soit désensibilisée (figure 7), ce qui provoque la fermeture de la pince 9 et le déplacement du poussoir 15 selon un mouvement de translation sous l'action des vérins 16a et 16b dont les pistons ont une course identique, la course du poussoir 15 étant telle qu'il fait glisser la feuille 6 sur les rouleaux 3 jusqu'à ce que son bord libre soit engagé dans l'unité de traitement grâce au tapis roulant 22 et aux galets 23.The opening of the clamp 9 controls the rotation drive of the rollers 3 until the cell 20 is desensitized (FIG. 7), which causes the clamp 9 to close and the pusher 15 to move in a movement of translation under the action of jacks 16a and 16b whose pistons have an identical stroke, the stroke of the pusher 15 being such that it slides the sheet 6 on the rollers 3 until its free edge is engaged in the processing unit thanks to the conveyor belt 22 and the rollers 23.

Claims (9)

  1. Device for positioning an article in flexible sheet form, including at least one gripper for gripping the sheet and engaging it straddling one or more horizontal parallel rollers, means for causing the gripper to open when the sheet is completely engaged on the roller or rollers in order to deposit it thereon, sensors for detecting the presence of one of the edges of the sheet aligned horizontally at the desired height for positioning this edge of the sheet, and in which a motor is associated with each roller, designed to rotate it according to the signal transmitted by the presence detectors sensitive to the position of the edge of the sheet situated in the vicinity; characterised in that it comprises one or more rollers (3) at least partially covered with non-slip material, at least one gripper (9) able to grip the end (6a) of the sheet (6) situated at the opposite side to the one where the presence detectors (19) are located, and a pusher (15) in the form of a horizontal blade, able to move in a horizontal plane and on the ends of which means (16a, 16b) for manoeuvring it act independently of each other, the presence detectors (19) being positioned sufficiently close to the roller or rollers (3) for several of them necessarily to be activated by the sheet (6) after it is deposited and also being arranged in order, firstly, to control the rotation of the roller or rollers (3) until one of them is deactivated, which has the effect of stopping the rotation of the roller or rollers (3), in order, secondly, to control the closure of the gripper or grippers and in order, thirdly, to actuate one of the means (16a, 16b) of manoeuvring the pusher (15) which moves it horizontally in the direction of the sheet (6) from its position of rest, in which one of its edges (15a) is close to the sheet (6), to an active position in which this same edge (15a) rests on the sheet (6) as an intermediate level between the gripper or grippers (9) and the roller (3) which is the closest to it, the movement taking place following a rotation movement about a vertical axis passing through one of the ends of the pusher (15) so as to bear on the sheet (6) in order to cause it to slide over the roller or rollers (6) until its free edge has deactivated all the other presence detectors (19) after having reached its desired correct horizontal position, which has the effect of actuating the means (16a, 16b) of manoeuvring the pusher (15) which previously has been activated in order to return the pusher (15) to its position of rest, and to control the opening of the gripper or grippers (9) so that the slackening of the sheet (6) is absorbed by the end (6a) situated on the opposite side to the detectors (19) so that the two ends (6a, 6b) of the sheet (6) hang on each side of the roller or rollers (3), suitable means (9, 15, 20, 22, 23) being provided for transferring the sheet (6) thus positioned to a processing unit (11).
  2. Device according to Claim 1, characterised in that it comprises two parallel rollers (3) under which the pusher (15) is situated, the manoeuvring members of which consist of rams (16a, 16b), and a gripper (9) comprising a moving jaw (12) situated on the same side of the sheet (6) as the pusher (15), and a fixed jaw (10a) situated on the other side of the sheet (6).
  3. Device according to Claim 2, characterised in that the fixed jaw of the gripper (9) consists of a part (10a) of the frame (10) of the processing unit (11) in front of which hangs the end (6a) of the sheet (6) whose position is to be corrected, and the moving jaw of which consists of a horizontal bar (12) carried by the top ends of at least two substantially vertical lateral arms (13) articulated, through their bottom end, on coaxial horizontal journals (14) enabling them to pivot between a position of rest in which the aforesaid bar (12) is maintained at a distance from the part (10a) of the frame (10) of the processing unit (11) serving as a fixed jaw, an an active position in which this bar (12) is applied against this part (10a) of the frame (10) so as to grip the corresponding end (6a) of the sheet (6), driving means being provided to actuate the arms (13) in one direction or the other.
  4. Device according to one of Claims 1 to 3, characterised in that the means provided for transferring the sheet (6) to the processing unit (11) consist of a presence detector (20) situated between the other presence detectors (19) and the roller (3) which is the closest thereto, which controls the rotation of the rollers (3) until it ceases to be activated by the sheet (6), at least one gripper (9) suitable for immobilising the end (6a) of the sheet (6) situated on the opposite side to the one where the presence detectors (19) are located, and a pusher (15) in the form of a horizontal blade situated under the roller or rollers (3), which is able to move in translation in a horizontal plane and the travel of which is such that it causes the sheet (6) to slide over the roller or rollers (3) until its free end, previously placed horizontally, is engaged in the processing unit (11).
  5. Device according to one of Claims 1 to 4, characterised in that it comprises one or more grippers (9) suitable for gripping the end (6a) of the sheet (6) situated on the opposite side to the one where the presence detectors (19) are located, both during the operation of placing the edges of the ends (6a, 6b) of the sheet (6) horizontally, and during the operation of transferring the sheet (6) to the processing unit (11), and a pusher (15) in the form of a horizontal blade situated under the roller or rollers (3), which is able to move in a horizontal plane and which is able to exhibit two different movements, one of which enables the edges of the ends (6a, 6b) of the sheet (6) to be placed horizontally, and the other one of which enables the said sheet to be transferred to the processing unit (11).
  6. Device according to one of Claims 1 to 5, characterised in that several endless belts (21), the external surface of which is non-slip, are engaged around each of the rollers (3).
  7. Device according to one of Claims 1 to 6, characterised in that the sensors (19, 20) for detecting the presence of the edge of the end (6b) of the sheet (6) consist of photoelectric cells.
  8. Device according to one of Claims 1 to 7, characterised in that it comprises two grippers (4) for engaging the sheet (6) on the roller or rollers (3), carried by a motorised endless belt (5), which are situated opposite each other.
  9. Device according to one of Claims 1 to 8, characterised in that it comprises an inclined slope (7) facilitating the engagement of the sheet (6) on the rollers (3).
EP90420447A 1989-10-17 1990-10-16 Positioning device for a product in the form of a flexible sheet Expired - Lifetime EP0424290B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8913875 1989-10-17
FR8913875A FR2653106B1 (en) 1989-10-17 1989-10-17 DEVICE FOR POSITIONING A PRODUCT IN THE FORM OF FLEXIBLE SHEET.

Publications (2)

Publication Number Publication Date
EP0424290A1 EP0424290A1 (en) 1991-04-24
EP0424290B1 true EP0424290B1 (en) 1995-02-15

Family

ID=9386681

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90420447A Expired - Lifetime EP0424290B1 (en) 1989-10-17 1990-10-16 Positioning device for a product in the form of a flexible sheet

Country Status (7)

Country Link
EP (1) EP0424290B1 (en)
AT (1) ATE118566T1 (en)
DE (1) DE69016917T2 (en)
DK (1) DK0424290T3 (en)
ES (1) ES2068368T3 (en)
FR (1) FR2653106B1 (en)
GR (1) GR3015441T3 (en)

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Publication number Priority date Publication date Assignee Title
US11192725B2 (en) * 2019-06-14 2021-12-07 Herbert Kannegiesser Gmbh Method and device for feeding laundry items to a mangle or the like

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DK172194B1 (en) * 1994-02-08 1997-12-22 Jensen Ejnar & Soen As Method and apparatus for unfolding and loading a wash piece in a clothing processing apparatus
DK170907B1 (en) * 1994-02-08 1996-03-11 Jensen Ejnar & Soen As Method and apparatus for loading a wash piece into a clothing processing apparatus
DK172243B1 (en) * 1994-04-28 1998-02-02 Jensen Ejnar & Soen As Apparatus for inserting substantially rectangular pieces of clothing into a drawer
DK171332B1 (en) * 1994-04-28 1996-09-09 Jensen Ejnar & Soen As Device for feeding clothes pieces in a drawer
DK171241B1 (en) * 1994-04-28 1996-08-05 Jensen Ejnar & Soen As Method of loading pieces of clothing into a clothing processing apparatus and apparatus for carrying out the method
DE19650982A1 (en) * 1996-12-09 1998-06-10 Kannegiesser H Gmbh Co Method and device for feeding laundry to a mangle or the like
DK175455B1 (en) * 1999-05-03 2004-11-01 Ejnar Jensen & Soen As Method and apparatus for unfolding and loading substantially rectangular washpieces in an extruder
FR2810345B1 (en) * 2000-06-16 2002-07-26 Jean Michel Soc INDUSTRIAL LAUNDRY MACHINE SAID "ENGAGING"
FR2810344B1 (en) * 2000-06-16 2002-07-26 Jean Michel Soc TRANSFER DEVICE FOR INDUSTRIAL LAUNDRY MACHINE
DE102009058637A1 (en) * 2009-12-16 2011-06-22 Herbert Kannegiesser GmbH, 32602 Method and apparatus for feeding a garment to a defect or the like
CN110528218B (en) * 2019-08-23 2023-07-25 广东溢达纺织有限公司 Pre-shrinking machine, fabric edge finishing device thereof and fabric pre-shrinking treatment method

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DE3119574C2 (en) * 1981-05-16 1983-11-10 Herbert Kannegiesser Gmbh + Co, 4973 Vlotho Device for feeding items of laundry to a mangle
BE905687A (en) * 1986-10-31 1987-02-16 Werkhuizen Lapauw Bv Met Beper CLOTHING MACHINE.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11192725B2 (en) * 2019-06-14 2021-12-07 Herbert Kannegiesser Gmbh Method and device for feeding laundry items to a mangle or the like

Also Published As

Publication number Publication date
ATE118566T1 (en) 1995-03-15
FR2653106B1 (en) 1992-01-03
FR2653106A1 (en) 1991-04-19
GR3015441T3 (en) 1995-06-30
DK0424290T3 (en) 1995-05-22
DE69016917T2 (en) 1995-06-08
EP0424290A1 (en) 1991-04-24
ES2068368T3 (en) 1995-04-16
DE69016917D1 (en) 1995-03-23

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