EP1510306B1 - Presser assembly for separating blanks cut in a sheet - Google Patents

Presser assembly for separating blanks cut in a sheet Download PDF

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Publication number
EP1510306B1
EP1510306B1 EP20040405477 EP04405477A EP1510306B1 EP 1510306 B1 EP1510306 B1 EP 1510306B1 EP 20040405477 EP20040405477 EP 20040405477 EP 04405477 A EP04405477 A EP 04405477A EP 1510306 B1 EP1510306 B1 EP 1510306B1
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EP
European Patent Office
Prior art keywords
rods
unit according
pressure
pressure unit
connecting means
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EP20040405477
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German (de)
French (fr)
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EP1510306A1 (en
Inventor
Jean-Pierre Steiner
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Bobst Mex SA
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Bobst SA
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/18—Means for removing cut-out material or waste
    • B26D7/1818—Means for removing cut-out material or waste by pushing out
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/01—Means for holding or positioning work
    • B26D7/02—Means for holding or positioning work with clamping means
    • B26D7/025—Means for holding or positioning work with clamping means acting upon planar surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2614—Means for mounting the cutting member

Definitions

  • the present invention relates to a pressing assembly for the separation of blanks cut in a sheet, according to the preamble of recitation 1.
  • a pressing assembly for the separation of blanks cut in a sheet, according to the preamble of recitation 1.
  • Such a device is described in the document US 2003/0032530 A1.
  • the blanks are separated by narrow strips and connected thereto by very thin cardboard bridges formed by very short interruptions of the cutting line. Then the sheet is positioned on a lower support board having apertures of the form of the poses. To detach the poses from the sheet, a pressing assembly of the above type is positioned above the sheet where the narrow strips between the layers are located.
  • Such a device has a relatively large number of parts, leading to a rather expensive solution to manufacture and assemble.
  • this solution poses problems due to the fact that the sliding rods are made of steel while the pressure rail is made of aluminum and are connected by a pin which passes through the rod and the rail, so that in the long run, the pin eats the aluminum of the rail, enlarged the hole in it, causing friction and noise before giving way.
  • the pressure rail can fall into the path of the gripper bar which drives the sheets of cardboard, causing a stoppage of the machine and damage that could immobilize the machine for a longer or shorter time.
  • the object of the present invention is to provide a solution that can remedy, at least in part, the aforementioned drawbacks.
  • this invention relates to a pressing assembly for the separation of blanks cut in a sheet, according to claim 1.
  • the connecting members of the pressing assembly according to the present invention each comprise a bearing surface against the upper face of said horizontal upper support and at least two elastic claws, arranged symmetrically with respect to the longitudinal axis of a passage, these claws crossing two respective passages of said horizontal upper support and each having a bearing surface against the lower surface of said horizontal upper support.
  • Such a connecting member allows a simple and fast fixing, without screw sliding rods in the upper support, considerably reducing the cost of the pressing assembly, all the more so if this connecting member is preferably made of a piece of plastic material that can be obtained by injection.
  • the presser assembly associates a rigid attachment of the rail to the ends of the sliding rods avoiding any risk of wear followed by the fall of the rail with the risk of damage resulting therefrom, with a certain freedom of the rods allowing them to adapt the rail position to the aforementioned parallelism defects.
  • the stops integral with the sliding rods are nuts screwed onto threaded portions of the respective rods, the connecting members each having a housing whose dimension corresponds to the distance between two parallel flaps of the nut, so that it can only enter the housing in a specific angular position, so as to detect any change in the initial position of said nut.
  • the pressing assembly object of the invention comprises a horizontal upper support 1 formed in this example by a board which has openings 1a for the passage of sliding rods 2, of which only one is shown.
  • This rod 2 is slidably mounted in a connecting member 3 which comprises four resilient fixing claws 3a which pass through four openings 1b formed through the upper support 1.
  • These resilient fixing claws 3a end with a stop surface 3b which extends outwardly of the elastic tab 3a. This stop surface is adjacent to a hooking surface 3c inclined towards the inner face of the elastic tab 3a.
  • the stop surfaces 3b are shaped to be parallel to the support board 1 fixing position of the connecting member 3, so as to ensure good contact between the stop surface and the lower face of the support board 1 against which these stop surfaces 3b.
  • the connecting member 3 is made of injected plastic material. Therefore it can be manufactured at a low cost and its fixing is achieved without tools by simply pressing downwards after positioning the ends of the four claws 3a vis-à-vis the respective openings 1b of the support board 1. This pressure allows the inclined attachment surfaces 3c to bend the resilient clamping claws 3a. When the stop surface arrives at the lower face of the support board 1, the resilient claws 3a push these stop surfaces under the support board 1 thus ensuring the attachment of this connecting member 3.
  • the sliding rod 2 is guided in the connecting member 3 by a passage 3d of oblong section whose length of the minor axis substantially corresponds to the diameter of the sliding rod 2, so that the rod 2 is guided while allowing a slight inclination in a plane containing the major axis of the oblong section of the passage 3d.
  • the lower end of the sliding rod 2 is fixed to a pressing rail 4. At least two sliding rods 2 are attached to the two ends of this pressing rail 4.
  • This pressing rail 4 is constituted by a section of rectangular section, one of the faces has in its center a longitudinal opening 4a extending over its entire length.
  • a clamping nut 5 is engaged in the channel formed inside the profile of the presser rail 4 where it is prevented from rotating.
  • the lower end of the sliding rod 2 has a thread 2a for receiving the clamping nut 5.
  • This end further comprises a second non-threaded portion 2b separated from the threaded portion 2a by a groove 2c in which a split elastic ring O 6 is engaged.
  • This split ring 6 is intended for the axial retention of a clamping member 7 held between the split O-ring 6 and a bearing surface 2d formed between the unthreaded end portion 2b and the rest of the rod 2.
  • the clamping nut 5 is screwed into the threaded portion 2a of the end of the sliding rod 2, the edges of the longitudinal opening 4a of the profiled pressing rail 4 are clamped between this nut 5 and the clamping member 7.
  • the counter-tightening member 7 has two parallel projections 7b which come into contact with the lateral faces of the pressure rail 4, preventing them from moving apart under the effect of the clamping force applied to them.
  • this clamping member 7 has a bearing surface 7a which serves as a stop at one end of a helical return spring 8 arranged around the sliding rod 2 and whose other end is engaged in a third annular housing in the connecting member 3.
  • This return spring 8 serves as elastic means for exerting a downward elastic pressure on the sliding rod 2. Since this return spring 8 is engaged in the annular housing 3e concentric to the longitudinal axis of the passage 3d, this return spring 8 also serves to ensure the centering and guiding of the sliding rod 2 relative to the passage 3d.
  • This sliding rod 2 comprises another second thread on which an axial thrust nut 9 is screwed into an adjustable position as a function of the desired stroke for the sliding rod 2 and thus for the pressing rail 4.
  • This nut 9 is associated with a plastic collar 9a for increasing the friction with the 2nd thread to prevent inadvertent movement of the abutment nut 9 and changing the length of the chosen race.
  • the other limit position of the sliding rods 2 is determined by the pressure rail 4 itself, as can be seen in FIG. 4.
  • an elastomer washer 11 covered with a metal washer 12 is disposed on the connecting member 3 around the sliding rod 2.
  • an elastically compressible compensation element advantageously formed by an O-ring (not shown) between the upper face of the support board 1 and the 3f support surface of the connecting member 3.
  • An annular groove could also be formed in the bearing surface 3f to accommodate the O-ring.
  • the connecting member 3 further comprises two fixing lugs 3g each provided with an opening for the passage of a screw intended to be screwed into the support board 1.

Description

La présente invention se rapporte à un ensemble presseur pour la séparation de poses découpées dans une feuille, selon le préambule de la recendication 1. Un tel dispositif est décrit dans le document US 2003/0032530 A1.The present invention relates to a pressing assembly for the separation of blanks cut in a sheet, according to the preamble of recitation 1. Such a device is described in the document US 2003/0032530 A1.

Lors d'une opération de découpe de poses de cartons dans une grande feuille, les poses découpées sont séparées par des bandes étroites et reliées à celles-ci par de très fins ponts de carton formés par de très courtes interruptions de la ligne de coupe. Ensuite la feuille est positionnée sur une planche de support inférieure présentant des ouvertures de la forme des poses. Pour détacher les poses de la feuille, un ensemble presseur du type susmentionné est positionné au-dessus de la feuille, aux endroits où se situent les bandes étroites séparant les poses.In an operation of cutting cardboard blanks in a large sheet, the blanks are separated by narrow strips and connected thereto by very thin cardboard bridges formed by very short interruptions of the cutting line. Then the sheet is positioned on a lower support board having apertures of the form of the poses. To detach the poses from the sheet, a pressing assembly of the above type is positioned above the sheet where the narrow strips between the layers are located.

On a déjà proposé un ensemble de ce type dans le US 5'529'565. Pour donner une certaine liberté au rail presseur par rapport aux tiges coulissantes, les extrémités respectives du rail presseur sont montées pivotantes aux extrémités des tiges coulissantes, ce qui permet de compenser les défauts de planéité ou de parallélisme entre l'ensemble presseur et la planche de support inférieure.We have already proposed a set of this type in the US 5'529'565. To give a certain freedom to the pressure rail relative to the sliding rods, the respective ends of the pressure rail are pivotally mounted at the ends of the sliding rods, which makes it possible to compensate for flatness or parallelism defects between the presser assembly and the ironing board. lower support.

Un tel dispositif comporte un nombre de pièces relativement important, conduisant à une solution assez chère à fabriquer et à monter. En outre cette solution pose des problèmes d'usure, dû au fait que les tiges coulissantes sont en acier alors que le rail presseur est en aluminium et sont reliés par une goupille qui traverse la tige et le rail, de sorte qu'à la longue, la goupille ronge l'aluminium du rail, agrandi le trou ménagé dans celui-ci, causant des frottement et du bruit avant de céder. Le rail presseur peut ainsi tomber dans la trajectoire de la barre de pinces qui entraîne les feuilles de carton, provoquant un arrêt de la machine et des dégâts susceptibles d'immobiliser la machine durant un temps plus ou moins long.Such a device has a relatively large number of parts, leading to a rather expensive solution to manufacture and assemble. In addition, this solution poses problems due to the fact that the sliding rods are made of steel while the pressure rail is made of aluminum and are connected by a pin which passes through the rod and the rail, so that in the long run, the pin eats the aluminum of the rail, enlarged the hole in it, causing friction and noise before giving way. The pressure rail can fall into the path of the gripper bar which drives the sheets of cardboard, causing a stoppage of the machine and damage that could immobilize the machine for a longer or shorter time.

On a déjà proposé dans le US 2003/0032539 un ensemble presseur dans lequel les tiges sont montées dans des organes de liaison avec un degré de liberté angulaire situé dans un plan contenant les axes des tiges et l'axe longitudinal du rail presseur. Les organes de liaison de ces tiges sont fixés chacun par deux vis, ce qui rend le montage de l'ensemble des rails presseurs relativement long.It has already been proposed in US 2003/0032539 a pressing assembly in which the rods are mounted in connecting members with a degree of angular freedom located in a plane containing the axes of the rods and the longitudinal axis of the pressure rail. The connecting members of these rods are each fixed by two screws, which makes the assembly of all the presser rails relatively long.

Le but de la présente invention est d'apporter une solution susceptible de remédier, au moins en partie aux inconvénients susmentionnés.The object of the present invention is to provide a solution that can remedy, at least in part, the aforementioned drawbacks.

A cet effet, cette invention a pour objet un ensemble presseur pour la séparation de poses découpées dans une feuille, selon la revendication 1.To this end, this invention relates to a pressing assembly for the separation of blanks cut in a sheet, according to claim 1.

Les organes de liaison de l'ensemble presseur selon la présente invention comportent chacun une surface d'appui contre la face supérieure dudit support supérieur horizontal et au moins deux griffes élastiques, disposées symétriquement par rapport à l'axe longitudinal d'un passage, ces griffes traversant deux passages respectifs dudit support supérieur horizontal et présentant chacune une surface d'appui contre la surface inférieure dudit support supérieur horizontal.The connecting members of the pressing assembly according to the present invention each comprise a bearing surface against the upper face of said horizontal upper support and at least two elastic claws, arranged symmetrically with respect to the longitudinal axis of a passage, these claws crossing two respective passages of said horizontal upper support and each having a bearing surface against the lower surface of said horizontal upper support.

Un tel organe de liaison permet une fixation simple et rapide, sans vis des tiges coulissantes dans le support supérieur, permettant de réduire considérablement le coût de l'ensemble presseur, d'autant plus si cet organe de liaison est réalisé de préférence en une pièce de matière plastique qui peut être obtenue par injection.Such a connecting member allows a simple and fast fixing, without screw sliding rods in the upper support, considerably reducing the cost of the pressing assembly, all the more so if this connecting member is preferably made of a piece of plastic material that can be obtained by injection.

Avantageusement, l'ensemble presseur associe une fixation rigide du rail aux extrémités des tiges coulissantes évitant tout risque d'usure suivi de la chute du rail avec les risques de dégâts qui en résulte, avec une certaine liberté des tiges leur permettant d'adapter la position du rail aux défauts de parallélismes susmentionnés.Advantageously, the presser assembly associates a rigid attachment of the rail to the ends of the sliding rods avoiding any risk of wear followed by the fall of the rail with the risk of damage resulting therefrom, with a certain freedom of the rods allowing them to adapt the rail position to the aforementioned parallelism defects.

De préférence, les butées solidaires des tiges coulissantes sont des écrous vissés sur des portions filetée des tiges respectives, les organes de liaison comportant chacun un logement dont une dimension correspond à la distance entre deux pans parallèles de l'écrou, pour que celui-ci ne puisse pénétrer dans le logement que dans une position angulaire déterminée, de manière à permettre de détecter toute modification de la position initiale dudit écrou.Preferably, the stops integral with the sliding rods are nuts screwed onto threaded portions of the respective rods, the connecting members each having a housing whose dimension corresponds to the distance between two parallel flaps of the nut, so that it can only enter the housing in a specific angular position, so as to detect any change in the initial position of said nut.

Grâce à cette disposition, tout desserrement de l'écrou est aisément détectable du fait que la tige coulissante ne peut plus revenir dans sa position initiale.With this arrangement, any loosening of the nut is easily detectable because the sliding rod can not return to its original position.

D'autres particularités originales de l'invention apparaîtront au cours de la description qui va suivre ainsi qu'à l'aide des dessins annexés qui illustrent, schématiquement et à titre d'exemple, une forme d'exécution de l'ensemble presseur objet de la présente invention.

  • La figure 1 est une vue en perspective partielle de cette forme d'exécution sans le support supérieur;
  • la figure 2 est une vue partielle en élévation, partiellement en coupe de cette forme d'exécution avec le support supérieur;
  • la figure 3 est une vue en coupe selon la ligne III-III de la figure 2;
  • la figure 4 est une vue semblable à la figure 3 montrant la tige coulissante dans sa seconde position limite;
  • la figure 5 est une vue de dessus de la figure 2.
Other original features of the invention will become apparent from the description which follows and with the aid of the accompanying drawings which illustrate, schematically and by way of example, an embodiment of the object pressure assembly of the present invention.
  • Figure 1 is a partial perspective view of this embodiment without the upper support;
  • Figure 2 is a partial elevational view, partially in section of this embodiment with the upper support;
  • Figure 3 is a sectional view along the line III-III of Figure 2;
  • Figure 4 is a view similar to Figure 3 showing the sliding rod in its second limit position;
  • Figure 5 is a top view of Figure 2.

L'ensemble presseur objet de l'invention comporte un support supérieur horizontal 1 formé dans cet exemple par une planche qui présente des ouvertures 1a pour le passage de tiges coulissantes 2, dont seule une est représentée. Cette tige 2 est montée coulissante dans un organe de liaison 3 qui comporte quatre griffes élastiques de fixation 3a qui traversent quatre ouvertures 1b ménagées à travers le support supérieur 1. Ces griffes élastiques de fixation 3a se terminent par une surface d'arrêt 3b qui s'étend vers l'extérieur de la patte élastique 3a. Cette surface d'arrêt est adjacente à une surface d'accrochage 3c inclinée en direction de la face interne de la patte élastique 3a.The pressing assembly object of the invention comprises a horizontal upper support 1 formed in this example by a board which has openings 1a for the passage of sliding rods 2, of which only one is shown. This rod 2 is slidably mounted in a connecting member 3 which comprises four resilient fixing claws 3a which pass through four openings 1b formed through the upper support 1. These resilient fixing claws 3a end with a stop surface 3b which extends outwardly of the elastic tab 3a. This stop surface is adjacent to a hooking surface 3c inclined towards the inner face of the elastic tab 3a.

Etant donné qu'en position de fixation sur la planche support 1 les griffes élastiques de fixation 3a sont légèrement fléchies par rapport à leur forme à l'état libre, les surfaces d'arrêt 3b sont conformées pour être parallèles à la planche support 1 en position de fixation de l'organe de liaison 3, de manière à assurer un bon contact entre cette surface d'arrêt et la face inférieure de la planche support 1 contre laquelle s'appuient ces surfaces d'arrêt 3b.Since in fixing position on the support board 1, the resilient fixing claws 3a are slightly bent with respect to their shape in the free state, the stop surfaces 3b are shaped to be parallel to the support board 1 fixing position of the connecting member 3, so as to ensure good contact between the stop surface and the lower face of the support board 1 against which these stop surfaces 3b.

De préférence, l'organe de liaison 3 est réalisé en matière plastique injectée. De ce fait elle peut être fabriquée à un faible coût et sa fixation est obtenue sans outil par une simple pression vers le bas après avoir positionné les extrémités des quatre griffes 3a vis-à-vis des ouvertures respectives 1b de la planche support 1. Cette pression permet aux surfaces d'accrochage inclinées 3c de faire fléchir les griffes élastiques de fixation 3a. Lorsque la surface d'arrêt arrive au niveau de la face inférieure de la planche support 1, les griffes élastiques 3a poussent ces surfaces d'arrêt sous la planche support 1 assurant ainsi la fixation de cet organe de liaison 3.Preferably, the connecting member 3 is made of injected plastic material. Therefore it can be manufactured at a low cost and its fixing is achieved without tools by simply pressing downwards after positioning the ends of the four claws 3a vis-à-vis the respective openings 1b of the support board 1. This pressure allows the inclined attachment surfaces 3c to bend the resilient clamping claws 3a. When the stop surface arrives at the lower face of the support board 1, the resilient claws 3a push these stop surfaces under the support board 1 thus ensuring the attachment of this connecting member 3.

La tige coulissante 2 est guidée dans l'organe de liaison 3 par un passage 3d de section oblongue dont la longueur du petit axe correspond sensiblement au diamètre de la tige coulissante 2, de sorte que la tige 2 est guidée tout en lui permettant une légère inclinaison dans un plan contenant le grand axe de la section oblongue du passage 3d.The sliding rod 2 is guided in the connecting member 3 by a passage 3d of oblong section whose length of the minor axis substantially corresponds to the diameter of the sliding rod 2, so that the rod 2 is guided while allowing a slight inclination in a plane containing the major axis of the oblong section of the passage 3d.

L'extrémité inférieure de la tige coulissante 2 est fixée à un rail presseur 4. Deux tiges coulissantes 2 au moins sont fixées aux deux extrémités de ce rail presseur 4. Ce rail presseur 4 est constitué par un profilé de section rectangulaire dont une des faces présente en son centre une ouverture longitudinale 4a s'étendant sur toute sa longueur. Un écrou de serrage 5 est engagé dans le canal formé à l'intérieur du profilé du rail presseur 4 où il est empêché de tourner.The lower end of the sliding rod 2 is fixed to a pressing rail 4. At least two sliding rods 2 are attached to the two ends of this pressing rail 4. This pressing rail 4 is constituted by a section of rectangular section, one of the faces has in its center a longitudinal opening 4a extending over its entire length. A clamping nut 5 is engaged in the channel formed inside the profile of the presser rail 4 where it is prevented from rotating.

L'extrémité inférieure de la tige coulissante 2 présente un filetage 2a destiné à recevoir l'écrou de serrage 5. Cette extrémité comporte encore une seconde partie non filetée 2b séparée de la partie filetée 2a par une gorge 2c dans laquelle un anneau torique élastique fendu 6 est engagé. Cet anneau fendu 6 est destiné à la retenue axiale d'un contre organe de serrage 7 maintenu entre l'anneau torique fendu 6 et une portée 2d ménagée entre la partie d'extrémité non filetée 2b et le reste de la tige 2. Ainsi lorsque l'écrou de serrage 5 est vissé dans la partie filetée 2a de l'extrémité de la tige coulissante 2, les bords de l'ouverture longitudinale 4a du rail presseur profilé 4 sont serrés entre cet écrou 5 et le contre organe de serrage 7.The lower end of the sliding rod 2 has a thread 2a for receiving the clamping nut 5. This end further comprises a second non-threaded portion 2b separated from the threaded portion 2a by a groove 2c in which a split elastic ring O 6 is engaged. This split ring 6 is intended for the axial retention of a clamping member 7 held between the split O-ring 6 and a bearing surface 2d formed between the unthreaded end portion 2b and the rest of the rod 2. the clamping nut 5 is screwed into the threaded portion 2a of the end of the sliding rod 2, the edges of the longitudinal opening 4a of the profiled pressing rail 4 are clamped between this nut 5 and the clamping member 7.

On peut observer sur les figures 2 et 3 notamment que le contre organe de serrage 7 présente deux saillies parallèles 7b qui viennent en contact avec les faces latérales du rail presseur 4, empêchant celles-ci de s'écarter sous l'effet de la force de serrage qui leur est appliquée.It can be seen in FIGS. 2 and 3 in particular that the counter-tightening member 7 has two parallel projections 7b which come into contact with the lateral faces of the pressure rail 4, preventing them from moving apart under the effect of the clamping force applied to them.

La surface externe de ce contre organe de serrage 7 présente une portée 7a qui sert de butée à une extrémité d'un ressort de rappel hélicoïdal 8 disposé autour de la tige coulissante 2 et dont l'autre extrémité est engagée dans un logement annulaire 3e ménagé dans l'organe de liaison 3. Ce ressort de rappel 8 sert de moyens élastiques pour exercer une pression élastique vers le bas sur la tige coulissante 2. Etant donné que ce ressort de rappel 8 est engagé dans le logement annulaire 3e concentrique à l'axe longitudinal du passage 3d, ce ressort de rappel 8 sert également à assurer le centrage et le guidage de la tige coulissante 2 par rapport au passage 3d.The outer surface of this clamping member 7 has a bearing surface 7a which serves as a stop at one end of a helical return spring 8 arranged around the sliding rod 2 and whose other end is engaged in a third annular housing in the connecting member 3. This return spring 8 serves as elastic means for exerting a downward elastic pressure on the sliding rod 2. Since this return spring 8 is engaged in the annular housing 3e concentric to the longitudinal axis of the passage 3d, this return spring 8 also serves to ensure the centering and guiding of the sliding rod 2 relative to the passage 3d.

La partie supérieure de cette tige coulissante 2 comporte un autre filetage 2e sur lequel un écrou de butée axiale 9 est vissé dans une position réglable en fonction de la course désirée pour la tige coulissante 2 et donc pour le rail presseur 4. Cet écrou 9 est associé à une collerette en plastique 9a destinée à augmenter le frottement avec le filetage 2e pour éviter le déplacement intempestif de cet écrou de butée 9 et le changement de la longueur de la course choisie. L'autre position limite des tiges coulissantes 2 est déterminée par le rail presseur 4 lui-même comme on peut le constater sur la figure 4.The upper part of this sliding rod 2 comprises another second thread on which an axial thrust nut 9 is screwed into an adjustable position as a function of the desired stroke for the sliding rod 2 and thus for the pressing rail 4. This nut 9 is associated with a plastic collar 9a for increasing the friction with the 2nd thread to prevent inadvertent movement of the abutment nut 9 and changing the length of the chosen race. The other limit position of the sliding rods 2 is determined by the pressure rail 4 itself, as can be seen in FIG. 4.

Comme on peut le constater en particulier sur les figures 1 et 3, dans sa position de butée, l'écrou 9 pénètre dans une ouverture calibrée 10 ménagée dans la partie supérieure de l'organe de liaison 3. Cette ouverture calibrée 10 est dimensionnée pour correspondre à la distance séparant deux pans parallèles de l'écrou de butée 9, de sorte que celui-ci ne peut passer à travers cette ouverture calibrée 10 et retrouver sa position de butée que dans une position angulaire déterminée. Si cet écrou de butée 9 se déplaçait au cours de son mouvement de va-et-vient, il ne pourrait plus passer à travers l'ouverture calibrée et cette anomalie pourrait alors être facilement détectée par un dispositif de sécurité approprié.As can be seen in particular in Figures 1 and 3, in its abutment position, the nut 9 enters a calibrated opening 10 formed in the upper part of the connecting member 3. This calibrated opening 10 is dimensioned to corresponding to the distance separating two parallel flaps of the stop nut 9, so that it can pass through this calibrated opening 10 and return to its stop position only in a position determined angle. If this stop nut 9 moved during its back-and-forth movement, it could no longer pass through the calibrated opening and this anomaly could then be easily detected by a suitable safety device.

Pour amortir les chocs en fin de course de la tige coulissante 2, une rondelle d'élastomère 11 recouverte d'une rondelle métallique 12 est disposée sur l'organe de liaison 3 autour de la tige coulissante 2.To dampen the shocks at the end of travel of the sliding rod 2, an elastomer washer 11 covered with a metal washer 12 is disposed on the connecting member 3 around the sliding rod 2.

Pour compenser les variations d'épaisseur possible de la planche support 1, on peut envisager de disposer un élément de compensation élastiquement compressible, formé avantageusement par un joint 0-ring (non représenté), entre la face supérieure de la planche support 1 et la surface d'appui 3f de l'organe de liaison 3. Une rainure annulaire pourrait aussi être ménagée dans cette surface d'appui 3f pour y loger le O-ring.To compensate for the variations in possible thickness of the support board 1, it is conceivable to have an elastically compressible compensation element advantageously formed by an O-ring (not shown) between the upper face of the support board 1 and the 3f support surface of the connecting member 3. An annular groove could also be formed in the bearing surface 3f to accommodate the O-ring.

Pour permettre une fixation par vissage de l'organe de liaison 3, au cas où ce mode de fixation serait souhaité, l'organe de liaison 3 comporte encore deux pattes de fixation 3g munies chacune d'une ouverture pour le passage d'une vis destinée à se visser dans la planche support 1.To allow fastening by screwing of the connecting member 3, in the case where this method of attachment is desired, the connecting member 3 further comprises two fixing lugs 3g each provided with an opening for the passage of a screw intended to be screwed into the support board 1.

Claims (12)

  1. Pressure unit for the separation of blanks cut out of a sheet, comprising a pressure rail (4) integral with at least two parallel rods (2) slidable by a connecting means (3) between two end positions through a horizontal upper support (1), resilient means (8) being disposed between the support (1) and said pressure rail (4) in order constantly to hold the rail in the position most remote from the horizontal upper support (1), defined by stops (9) integral with the rods (2), the connecting means (3) having a surface (3f) bearing against the upper surface of the horizontal upper support (1), characterized by at least two resilient claws (3a), disposed symmetrically relative to the longitudinal axis of a passage (3d), the claws (3a) extending through two respective passages (1 b) in the horizontal upper support (1), and each having a surface (3b) bearing against the lower surface of the horizontal upper support (1).
  2. Pressure unit according to claim 1, wherein the surface (3f) of the connecting means bearing against the upper surface of the upper support (1) is associated with a resiliently compressible compensation element adapted to compensate variations in thickness of the upper support (1).
  3. Pressure unit according to any of the preceding claims, wherein the connecting means (3) also comprise two lugs (3g) each formed with an opening for a screw for fixing into the upper support (1).
  4. Pressure unit according to claim 1, wherein the connecting means (3) comprise four resilient claws (3a) symmetrically disposed relative to the longitudinal axis of the pressure rail (4) and the longitudinal axis of the passage (3d).
  5. Pressure unit according to any of the preceding claims, wherein the connecting means (3) are made of a rigid plastic.
  6. Pressure unit according to any of the preceding claims, comprising rigid clamping means (5, 7) between the pressure rail (4) and the rods (2), the rods being mounted in the respective connecting means (3) with a degree of angular freedom in a plane containing the axes of the rods (2) and the longitudinal axis of the pressure rail (4).
  7. Pressure unit according to claim 6, wherein the connecting means (3) is formed with a passage (3d) with an oblong section having a width equal to the diameter of one of the parallel rods (2) and a major axis parallel to the longitudinal axis of the pressure rail (4) for sliding fitting of one of the said parallel rods (2) with one degree of angular freedom.
  8. Pressure unit according to claims 6 or 7, wherein one of the stops integral with the parallel rods (2) is a nut (9) screwed on to a threaded portion (2e) of the respective rods, the connecting means (3) each being formed with an opening (10) having at least one dimension equal to the distance between two parallel flats of the nut (9) so that the nut cannot enter the opening (10) except in given angular position and consequently any change in the initial position of the nut (9) can be detected.
  9. Pressure unit according to claims 6 to 8, wherein the pressure rail (4) has a hollow rectangular section with a longitudinal opening (4a) formed along one surface thereof, the clamping means between the pressure rail (4) and the rods (2) comprising a nut (5) engaging a thread (2a) on the lower end of the respective rods (2), the distance between two parallel surfaces being substantially equal to the width of the space inside the pressure rail (4), the edges of the longitudinal opening (4a) being clamped between the nut (5) and a co-operating clamping means (7) retained by an abutment (2d) integral with the rod (2).
  10. Pressure unit according to claim 8, wherein the nut (9) has means for increasing the frictional force when it rotates on the threaded part (2e) of the sliding rod (2).
  11. Pressure unit according the claim 9, wherein the co-operating clamping means (7) has two parallel projections (7b) each engaging one side face of the pressure rail (4).
  12. Pressure unit according to any of the preceding claims, wherein the connecting means (3) has an annular recess (3e) concentric with the longitudinal axis of the oblong-section passage (3d) in order to receive an end of a helical spring constituting the said resilient return means (8) so as to centre and guide one of the said rods (2) in the passage (3d).
EP20040405477 2003-09-01 2004-07-26 Presser assembly for separating blanks cut in a sheet Active EP1510306B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20040405477 EP1510306B1 (en) 2003-09-01 2004-07-26 Presser assembly for separating blanks cut in a sheet

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP03405629 2003-09-01
EP03405629 2003-09-01
EP20040405477 EP1510306B1 (en) 2003-09-01 2004-07-26 Presser assembly for separating blanks cut in a sheet

Publications (2)

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EP1510306A1 EP1510306A1 (en) 2005-03-02
EP1510306B1 true EP1510306B1 (en) 2006-07-26

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Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7658196B2 (en) 2005-02-24 2010-02-09 Ethicon Endo-Surgery, Inc. System and method for determining implanted device orientation
US7775966B2 (en) 2005-02-24 2010-08-17 Ethicon Endo-Surgery, Inc. Non-invasive pressure measurement in a fluid adjustable restrictive device
US7775215B2 (en) 2005-02-24 2010-08-17 Ethicon Endo-Surgery, Inc. System and method for determining implanted device positioning and obtaining pressure data
US7844342B2 (en) 2008-02-07 2010-11-30 Ethicon Endo-Surgery, Inc. Powering implantable restriction systems using light
US7927270B2 (en) 2005-02-24 2011-04-19 Ethicon Endo-Surgery, Inc. External mechanical pressure sensor for gastric band pressure measurements
US8016745B2 (en) 2005-02-24 2011-09-13 Ethicon Endo-Surgery, Inc. Monitoring of a food intake restriction device
US8016744B2 (en) 2005-02-24 2011-09-13 Ethicon Endo-Surgery, Inc. External pressure-based gastric band adjustment system and method
US8034065B2 (en) 2008-02-26 2011-10-11 Ethicon Endo-Surgery, Inc. Controlling pressure in adjustable restriction devices
US8057492B2 (en) 2008-02-12 2011-11-15 Ethicon Endo-Surgery, Inc. Automatically adjusting band system with MEMS pump
US8066629B2 (en) 2005-02-24 2011-11-29 Ethicon Endo-Surgery, Inc. Apparatus for adjustment and sensing of gastric band pressure
US8100870B2 (en) 2007-12-14 2012-01-24 Ethicon Endo-Surgery, Inc. Adjustable height gastric restriction devices and methods
US8114345B2 (en) 2008-02-08 2012-02-14 Ethicon Endo-Surgery, Inc. System and method of sterilizing an implantable medical device
US8142452B2 (en) 2007-12-27 2012-03-27 Ethicon Endo-Surgery, Inc. Controlling pressure in adjustable restriction devices
US8152710B2 (en) 2006-04-06 2012-04-10 Ethicon Endo-Surgery, Inc. Physiological parameter analysis for an implantable restriction device and a data logger
US8187163B2 (en) 2007-12-10 2012-05-29 Ethicon Endo-Surgery, Inc. Methods for implanting a gastric restriction device
US8187162B2 (en) 2008-03-06 2012-05-29 Ethicon Endo-Surgery, Inc. Reorientation port
US8192350B2 (en) 2008-01-28 2012-06-05 Ethicon Endo-Surgery, Inc. Methods and devices for measuring impedance in a gastric restriction system
US8221439B2 (en) 2008-02-07 2012-07-17 Ethicon Endo-Surgery, Inc. Powering implantable restriction systems using kinetic motion
US8233995B2 (en) 2008-03-06 2012-07-31 Ethicon Endo-Surgery, Inc. System and method of aligning an implantable antenna
US8337389B2 (en) 2008-01-28 2012-12-25 Ethicon Endo-Surgery, Inc. Methods and devices for diagnosing performance of a gastric restriction system
US8377079B2 (en) 2007-12-27 2013-02-19 Ethicon Endo-Surgery, Inc. Constant force mechanisms for regulating restriction devices
US8591395B2 (en) 2008-01-28 2013-11-26 Ethicon Endo-Surgery, Inc. Gastric restriction device data handling devices and methods
US8591532B2 (en) 2008-02-12 2013-11-26 Ethicon Endo-Sugery, Inc. Automatically adjusting band system
US8870742B2 (en) 2006-04-06 2014-10-28 Ethicon Endo-Surgery, Inc. GUI for an implantable restriction device and a data logger

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AT351252B (en) * 1977-06-15 1979-07-10 Khu Peter PROCESS AND DEVICE FOR SEPARATING MOLDED PIECES, FORMED IN AT LEAST ONE FILM LAYER, BY A PRESS WELDING PROCESS ALONG THEIR WELDING CONTOUR
JPH0790514B2 (en) * 1989-02-20 1995-10-04 日本ダイスチール株式会社 Wooden mold used for punching equipment
US5529565A (en) * 1994-01-18 1996-06-25 Oetlinger; Frank E. Presser assembly
US5599269A (en) * 1994-01-18 1997-02-04 Oetlinger; Frank E. Presser assembly
US6589148B2 (en) * 2001-08-08 2003-07-08 Michael P. Tarka Moveable presser rail assembly

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7658196B2 (en) 2005-02-24 2010-02-09 Ethicon Endo-Surgery, Inc. System and method for determining implanted device orientation
US7775966B2 (en) 2005-02-24 2010-08-17 Ethicon Endo-Surgery, Inc. Non-invasive pressure measurement in a fluid adjustable restrictive device
US7775215B2 (en) 2005-02-24 2010-08-17 Ethicon Endo-Surgery, Inc. System and method for determining implanted device positioning and obtaining pressure data
US7927270B2 (en) 2005-02-24 2011-04-19 Ethicon Endo-Surgery, Inc. External mechanical pressure sensor for gastric band pressure measurements
US8016745B2 (en) 2005-02-24 2011-09-13 Ethicon Endo-Surgery, Inc. Monitoring of a food intake restriction device
US8016744B2 (en) 2005-02-24 2011-09-13 Ethicon Endo-Surgery, Inc. External pressure-based gastric band adjustment system and method
US8066629B2 (en) 2005-02-24 2011-11-29 Ethicon Endo-Surgery, Inc. Apparatus for adjustment and sensing of gastric band pressure
US8870742B2 (en) 2006-04-06 2014-10-28 Ethicon Endo-Surgery, Inc. GUI for an implantable restriction device and a data logger
US8152710B2 (en) 2006-04-06 2012-04-10 Ethicon Endo-Surgery, Inc. Physiological parameter analysis for an implantable restriction device and a data logger
US8187163B2 (en) 2007-12-10 2012-05-29 Ethicon Endo-Surgery, Inc. Methods for implanting a gastric restriction device
US8100870B2 (en) 2007-12-14 2012-01-24 Ethicon Endo-Surgery, Inc. Adjustable height gastric restriction devices and methods
US8142452B2 (en) 2007-12-27 2012-03-27 Ethicon Endo-Surgery, Inc. Controlling pressure in adjustable restriction devices
US8377079B2 (en) 2007-12-27 2013-02-19 Ethicon Endo-Surgery, Inc. Constant force mechanisms for regulating restriction devices
US8192350B2 (en) 2008-01-28 2012-06-05 Ethicon Endo-Surgery, Inc. Methods and devices for measuring impedance in a gastric restriction system
US8337389B2 (en) 2008-01-28 2012-12-25 Ethicon Endo-Surgery, Inc. Methods and devices for diagnosing performance of a gastric restriction system
US8591395B2 (en) 2008-01-28 2013-11-26 Ethicon Endo-Surgery, Inc. Gastric restriction device data handling devices and methods
US8221439B2 (en) 2008-02-07 2012-07-17 Ethicon Endo-Surgery, Inc. Powering implantable restriction systems using kinetic motion
US7844342B2 (en) 2008-02-07 2010-11-30 Ethicon Endo-Surgery, Inc. Powering implantable restriction systems using light
US8114345B2 (en) 2008-02-08 2012-02-14 Ethicon Endo-Surgery, Inc. System and method of sterilizing an implantable medical device
US8057492B2 (en) 2008-02-12 2011-11-15 Ethicon Endo-Surgery, Inc. Automatically adjusting band system with MEMS pump
US8591532B2 (en) 2008-02-12 2013-11-26 Ethicon Endo-Sugery, Inc. Automatically adjusting band system
US8034065B2 (en) 2008-02-26 2011-10-11 Ethicon Endo-Surgery, Inc. Controlling pressure in adjustable restriction devices
US8187162B2 (en) 2008-03-06 2012-05-29 Ethicon Endo-Surgery, Inc. Reorientation port
US8233995B2 (en) 2008-03-06 2012-07-31 Ethicon Endo-Surgery, Inc. System and method of aligning an implantable antenna

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