EP1510306A1 - 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
EP1510306A1
EP1510306A1 EP04405477A EP04405477A EP1510306A1 EP 1510306 A1 EP1510306 A1 EP 1510306A1 EP 04405477 A EP04405477 A EP 04405477A EP 04405477 A EP04405477 A EP 04405477A EP 1510306 A1 EP1510306 A1 EP 1510306A1
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EP
European Patent Office
Prior art keywords
rods
presser
assembly according
rail
support
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Granted
Application number
EP04405477A
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German (de)
French (fr)
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EP1510306B1 (en
Inventor
Jean-Pierre Steiner
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Bobst Mex SA
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Bobst SA
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Priority to EP20040405477 priority Critical patent/EP1510306B1/en
Publication of EP1510306A1 publication Critical patent/EP1510306A1/en
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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 from a sheet, comprising a presser rail secured to at least two rods parallel, slidably mounted between two limit positions, through a horizontal upper support, via of a connecting member, elastic means being disposed between said support and said pressure rail for constantly strive to keep him in his position most distant from said horizontal upper support, defined by stops integral with said rods.
  • the cut poses are separated by narrow bands and connected to them by very thin cardboard bridges formed by very short interruptions of the cut line. Then the sheet is positioned on a lower support board with openings of the form of the poses. To detach the poses from sheet, a presser assembly of the type mentioned above is positioned above the leaf, where locate the narrow strips separating the poses.
  • Such a device comprises a number of parts relatively important, leading to a rather expensive solution to manufacture and mount.
  • this solution poses problems of wear, due to the fact that the sliding rods are steel while the pressure rail is aluminum and are connected by a pin which passes through the rod and the rail, so that in the long run, the pin eats away at the aluminum of the rail, enlarged the hole in it, causing friction and noise before giving way.
  • the presser rail can thus fall in the trajectory of the gripper bar which leads to the cardboard sheets, causing the machine to stop and damage that could immobilize the machine during a more or less long time.
  • the object of the present invention is to provide a solution likely to remedy, at least in part, the disadvantages above.
  • this invention relates to a set presser for the separation of poses cut in a sheet according to claim 1.
  • the connecting members of the presser assembly according to the present invention each comprise a bearing surface against the upper face of said upper support and minus two elastic claws, arranged symmetrically by relative to the longitudinal axis of the said passage, these crossing claws two respective passages of said support and presenting each a bearing surface against the lower surface said support.
  • Such a connecting member allows a simple fixation and fast, without screw sliding rods in the upper bracket, significantly reducing the cost of the presser assembly, especially if this liaison member is preferably made of a piece of plastic which can be obtained by injection.
  • the presser assembly associates a fastener rigid rail at the ends of the sliding rods avoiding any risk of wear followed by the fall of the rail with the resulting risk of damage, with some freedom of the rods allowing them to adapt the position of the rail to the aforementioned parallelism defects.
  • the stops integral with the sliding rods are nuts screwed onto threaded portions of respective rods, the connecting members each comprising a dwelling whose size corresponds to the distance between two parallel sections of the nut, so that it does not can enter the housing only in an angular position determined in such a way as to make it possible to detect modification of the initial position of said nut.
  • the pressing assembly which is the subject of the invention comprises a horizontal top bracket 1 formed in this example by a board that has openings 1a for the passage sliding rods 2, of which only one is shown.
  • This rod 2 is slidably mounted in a connecting member 3 which has four resilient clamps 3a which cross four openings 1b formed through the upper bracket 1.
  • These resilient clamps 3a terminate with a stop surface 3b which extends towards the outside of the elastic tab 3a. This stop surface is adjacent to a hooking surface 3c inclined in direction of the inner face of the elastic tab 3a.
  • the stopping surfaces 3b are shaped to be parallel to the support board 1 in the fixing position of the body of link 3, so as to ensure good contact between this stop surface and the underside of the support board 1 against which support these stop surfaces 3b.
  • the connecting member 3 is made of injected plastic. Because of this it can be made at a low cost and its fixing is achieved without tools by simply pressing down after positioning the ends of the four claws 3a vis-à-vis the openings respective 1b of the support board 1. This pressure allows inclined attachment surfaces 3c to flex the resilient clamping claws 3a. When the surface stoppage occurs at the lower face of the support board 1, the resilient claws 3a push these stop surfaces under the support board 1 thereby ensuring the fixing 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 small axis corresponds substantially to the diameter of the stem sliding 2, so that the rod 2 is guided while in him allowing a slight inclination in a plane containing the major axis of the oblong section of the 3d passage.
  • the lower end of the sliding rod 2 is attached to a presser rail 4.
  • Two sliding rods 2 to less are fixed at both ends of this presser rail 4.
  • This pressure rail 4 consists of a section section rectangular one of whose 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 of the profile of the presser rail 4 where it is prevented from turn.
  • the lower end of the sliding rod 2 presents a thread 2a for receiving the clamping nut 5.
  • This end still has a second unthreaded portion 2b separated from the threaded portion 2a by a groove 2c in which a split resilient O-ring 6 is engaged.
  • This split ring 6 is intended for the axial restraint of a counter clamping member 7 held between the split O-ring 6 and a span 2d formed between the unthreaded end portion 2b and the rest of the rod 2. So when the nut of tightening 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 presser rail 4 are clamped between this nut 5 and against the clamping member 7.
  • clamping member 7 has two parallel protrusions 7b which come into contact with the lateral faces of the pressure rail 4, preventing them from moving apart under the effect the clamping force applied to them.
  • this clamping member 7 has a bearing 7a which serves as a stop at one end a helical return spring 8 disposed around the rod 2 and whose other end is engaged in an annular housing 3e formed in the connecting member 3.
  • This return spring 8 serves as elastic means for exerting an elastic pressure down on the sliding rod 2. Since this return spring 8 is engaged in the annular housing 3e concentric with the longitudinal axis of the 3d passage, this return spring 8 is also used to ensure the centering and guiding of the sliding rod 2 compared to the 3d passage.
  • the upper part of this sliding rod 2 comprises another 2nd thread on which a thrust nut axial 9 is screwed into an adjustable position according to the desired run for the sliding rod 2 and therefore for the pressure rail 4.
  • This nut 9 is associated with a collar in plastic 9a for increasing the friction with the thread 2nd to avoid the inadvertent movement of this thrust nut 9 and change the length of the stroke chosen.
  • the other limit position of the sliding rods 2 is determined by the presser rail 4 itself as one can see it in figure 4.
  • the nut 9 in its stop position, the nut 9 penetrates in a calibrated opening 10 formed in the upper part of the connecting member 3.
  • This calibrated opening 10 is sized to match the distance between two parallel flaps of the thrust nut 9, so that this one can not pass through this calibrated opening 10 and regain its stop position only in one position determined angle. If this thrust nut 9 was moving during his back-and-forth movement, he could not more pass through the calibrated aperture and this anomaly could then be easily detected by a device appropriate security.
  • an elastomer washer 11 covered with a metal washer 12 is disposed on the connecting member 3 around the sliding rod 2.
  • an element resiliently compressible compensation device advantageously formed by a 0-ring seal (not shown), between the upper side of the support board 1 and the surface 3f of the connecting member 3.
  • An annular groove could also be provided in this support surface 3f to house the O-ring.
  • the connecting member 3 further comprises two fixing lugs 3g each provided with an opening for the passage of a screw for screwing into the support board 1.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)

Abstract

The assembly has a connecting unit (3) with a support surface (3f) against an upper side of an upper support (1). Two elastic clamps (3a) are symmetrically arranged with respect to a longitudinal axis of a passage (3d). The clamps traverse two respective openings (1b) of the support. Each clamp has a support surface (3b) against a lower surface of the support.

Description

La présente invention se rapporte à un ensemble presseur pour la séparation de poses découpées dans une feuille, comprenant un rail presseur solidaire d'au moins deux tiges parallèles, montées coulissantes entre deux positions limites, à travers un support supérieur horizontal, par l'intermédiaire d'un organe de liaison, des moyens élastiques étant disposés entre ledit support et ledit rail presseur pour tendre constamment à maintenir ce dernier dans sa position la plus écartée dudit support supérieur horizontal, définie par des butées solidaires desdites tiges.The present invention relates to a pressing assembly for the separation of blanks cut from a sheet, comprising a presser rail secured to at least two rods parallel, slidably mounted between two limit positions, through a horizontal upper support, via of a connecting member, elastic means being disposed between said support and said pressure rail for constantly strive to keep him in his position most distant from said horizontal upper support, defined by stops integral with said rods.

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.During a cutting operation of cardboard poses in a large sheet, the cut poses are separated by narrow bands and connected to them by very thin cardboard bridges formed by very short interruptions of the cut line. Then the sheet is positioned on a lower support board with openings of the form of the poses. To detach the poses from sheet, a presser assembly of the type mentioned above is positioned above the leaf, where locate the narrow strips separating the poses.

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 sliding rods, which makes it possible to compensate for defects flatness or parallelism between the pressing assembly and the lower support board.

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 entraíne 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 comprises a number of parts relatively important, leading to a rather expensive solution to manufacture and mount. In addition, this solution poses problems of wear, due to the fact that the sliding rods are steel while the pressure rail is aluminum and are connected by a pin which passes through the rod and the rail, so that in the long run, the pin eats away at the aluminum of the rail, enlarged the hole in it, causing friction and noise before giving way. The presser rail can thus fall in the trajectory of the gripper bar which leads to the cardboard sheets, causing the machine to stop and damage that could immobilize the machine during a more or less long 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 set presser in which the rods are mounted in organs connection with a degree of angular freedom located in a plan 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 assembly of the whole relatively long press rails.

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 likely to remedy, at least in part, the disadvantages above.

A cet effet, cette invention a pour objet un ensemble presseur pour la séparation de poses découpées dans une feuille, selon la revendication 1.For this purpose, this invention relates to a set presser for the separation of poses 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 et au moins deux griffes élastiques, disposées symétriquement par rapport à l'axe longitudinal dudit passage, ces griffes traversant deux passages respectifs dudit support et présentant chacune une surface d'appui contre la surface inférieure dudit support.The connecting members of the presser assembly according to the present invention each comprise a bearing surface against the upper face of said upper support and minus two elastic claws, arranged symmetrically by relative to the longitudinal axis of the said passage, these crossing claws two respective passages of said support and presenting each a bearing surface against the lower surface said 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 fixation and fast, without screw sliding rods in the upper bracket, significantly reducing the cost of the presser assembly, especially if this liaison member is preferably made of a piece of plastic which 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 fastener rigid rail at the ends of the sliding rods avoiding any risk of wear followed by the fall of the rail with the resulting risk of damage, with some freedom of the rods allowing them to adapt the position of the rail 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 respective rods, the connecting members each comprising a dwelling whose size corresponds to the distance between two parallel sections of the nut, so that it does not can enter the housing only in an angular position determined in such a way as to make it possible to detect modification of 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 no longer return to its original position.

D'autres particularités originales de l'invention apparaítront 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 which is the subject of the invention comprises a horizontal top bracket 1 formed in this example by a board that has openings 1a for the passage sliding rods 2, of which only one is shown. This rod 2 is slidably mounted in a connecting member 3 which has four resilient clamps 3a which cross four openings 1b formed through the upper bracket 1. These resilient clamps 3a terminate with a stop surface 3b which extends towards the outside of the elastic tab 3a. This stop surface is adjacent to a hooking surface 3c inclined in direction of 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 board support 1 the elastic fixing claws 3a are slightly flexed in relation to their form in the free state, the stopping surfaces 3b are shaped to be parallel to the support board 1 in the fixing position of the body of link 3, so as to ensure good contact between this stop surface and the underside of the support board 1 against which support 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. Because of this it can be made at a low cost and its fixing is achieved without tools by simply pressing down after positioning the ends of the four claws 3a vis-à-vis the openings respective 1b of the support board 1. This pressure allows inclined attachment surfaces 3c to flex the resilient clamping claws 3a. When the surface stoppage occurs at the lower face of the support board 1, the resilient claws 3a push these stop surfaces under the support board 1 thereby ensuring the fixing 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 small axis corresponds substantially to the diameter of the stem sliding 2, so that the rod 2 is guided while in him allowing a slight inclination in a plane containing the major axis of the oblong section of the 3d passage.

    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 attached to a presser rail 4. Two sliding rods 2 to less are fixed at both ends of this presser rail 4. This pressure rail 4 consists of a section section rectangular one of whose 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 of the profile of the presser rail 4 where it is prevented from turn.

    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 presents a thread 2a for receiving the clamping nut 5. This end still has a second unthreaded portion 2b separated from the threaded portion 2a by a groove 2c in which a split resilient O-ring 6 is engaged. This split ring 6 is intended for the axial restraint of a counter clamping member 7 held between the split O-ring 6 and a span 2d formed between the unthreaded end portion 2b and the rest of the rod 2. So when the nut of tightening 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 presser rail 4 are clamped between this nut 5 and against 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 Figures 2 and 3 in particular that the clamping member 7 has two parallel protrusions 7b which come into contact with the lateral faces of the pressure rail 4, preventing them from moving apart under the effect 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 7a which serves as a stop at one end a helical return spring 8 disposed around the rod 2 and whose other end is engaged in an annular housing 3e formed in the connecting member 3. This return spring 8 serves as elastic means for exerting an elastic pressure down on the sliding rod 2. Since this return spring 8 is engaged in the annular housing 3e concentric with the longitudinal axis of the 3d passage, this return spring 8 is also used to ensure the centering and guiding of the sliding rod 2 compared to the 3d passage.

    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 2nd thread on which a thrust nut axial 9 is screwed into an adjustable position according to the desired run for the sliding rod 2 and therefore for the pressure rail 4. This nut 9 is associated with a collar in plastic 9a for increasing the friction with the thread 2nd to avoid the inadvertent movement of this thrust nut 9 and change the length of the stroke chosen. The other limit position of the sliding rods 2 is determined by the presser rail 4 itself as one can see it in figure 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 the figures 1 and 3, in its stop position, the nut 9 penetrates in a calibrated opening 10 formed in the upper part of the connecting member 3. This calibrated opening 10 is sized to match the distance between two parallel flaps of the thrust nut 9, so that this one can not pass through this calibrated opening 10 and regain its stop position only in one position determined angle. If this thrust nut 9 was moving during his back-and-forth movement, he could not more pass through the calibrated aperture and this anomaly could then be easily detected by a device appropriate security.

    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 cushion shocks at the end of the stem stroke slider 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 possible thickness variations of the support board 1, we can consider having an element resiliently compressible compensation device, advantageously formed by a 0-ring seal (not shown), between the upper side of the support board 1 and the surface 3f of the connecting member 3. An annular groove could also be provided in this support surface 3f to house 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 a fixation by screwing of the organ of link 3, in case this mode 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 for screwing into the support board 1.

    Claims (12)

    1. Ensemble presseur pour la séparation de poses découpées dans une feuille, comprenant un rail presseur (4) solidaire d'au moins deux tiges (2) parallèles, montées coulissantes entre deux positions limites, à travers un support supérieur horizontal (1), par l'intermédiaire d'un organe de liaison (3), des moyens élastiques (8) étant disposés entre ledit support (1) et ledit rail presseur (4) pour tendre constamment à maintenir ce dernier dans sa position la plus écartée dudit support supérieur horizontal (1), définie par des butées (9) solidaires desdites tiges (2), caractérisé en ce que ledit organe de liaison (3) comporte une surface d'appui (3f) contre la face supérieure dudit support supérieur (1) et au moins deux griffes élastiques (3a), disposées symétriquement par rapport à l'axe longitudinal dudit passage (3d), ces griffes (3a) traversant deux passages respectifs (1b) dudit support (1) et présentant chacune une surface d'appui (3b) contre la surface inférieure dudit support (1). 1. Presser assembly for the separation of blanks cut from a sheet, comprising a presser rail (4) secured to at least two parallel rods (2), slidably mounted between two limit positions, through a horizontal upper support (1), by means of a connecting member (3), elastic means (8) being arranged between said support (1) and said pressure rail (4) to tend constantly to maintain the latter in its most remote position of said support horizontal upper (1), defined by stops (9) secured to said rods (2), characterized in that said connecting member (3) comprises a bearing surface (3f) against the upper face of said upper support (1) and at least two resilient claws (3a), arranged symmetrically with respect to the longitudinal axis of said passage (3d), these claws (3a) passing through two respective passages (1b) of said support (1) and each having a bearing surface (3b) against the surface in said support (1). 2. Ensemble presseur selon la revendication 1, dans lequel la surface d'appui (3f) dudit organe de liaison contre la face supérieure dudit support supérieur (1) est associée à un élément de compensation élastiquement compressible, destiné à compenser les variations d'épaisseur dudit support supérieur (1). 2. pressing assembly according to claim 1, wherein the bearing surface (3f) of said connecting member against the upper face of said upper support (1) is associated with an elastically compressible compensation element, intended to compensate for the variations of thickness of said upper support (1). 3. Ensemble presseur selon l'une des revendications précédentes, dans lequel lesdits moyens de liaison (3) comportent en outre deux pattes (3g) traversées chacune par une ouverture pour le passage d'une vis de fixation dans ledit support supérieur (1). 3. presser assembly according to one of the preceding claims, wherein said connecting means (3) further comprise two tabs (3g) each traversed by an opening for the passage of a fixing screw in said upper support (1) . 4. Ensemble presseur selon la revendication 1, dans lequel lesdits moyens de liaison (3) comportent quatre griffes élastiques (3a) disposés symétriquement par rapport à l'axe longitudinal dudit rail presseur (4) et à l'axe longitudinal dudit passage (3d). 4. presser assembly according to claim 1, wherein said connecting means (3) comprise four resilient claws (3a) arranged symmetrically with respect to the longitudinal axis of said presser rail (4) and to the longitudinal axis of said passage (3d ). 6. Ensemble presseur selon l'une des revendications précédentes, dans lequel lesdits organes de liaison (3) sont en une matière plastique rigide. 6. Presser assembly according to one of the preceding claims, wherein said connecting members (3) are made of a rigid plastic material. 7. Ensemble presseur selon l'une des revendications précédentes, comportant des moyens de fixation rigide (5, 7) entre ledit rail presseur (4) et lesdites tiges (2), celles-ci étant montées dans lesdits organes de liaison respectifs (3) avec un degré de liberté angulaire situé dans un plan contenant les axes desdites tiges (2) et l'axe longitudinal dudit rail presseur (4). 7. Presser assembly according to one of the preceding claims, comprising rigid fixing means (5, 7) between said pressure rail (4) and said rods (2), the latter being mounted in said respective connecting members (3). ) with a degree of angular freedom situated in a plane containing the axes of said rods (2) and the longitudinal axis of said pressure rail (4). 8. Ensemble presseur selon la revendication 7, dans lequel ledit organe de liaison (3) comporte un passage (3d) de section oblongue dont la largeur correspond au diamètre de l'une desdites tiges parallèles (2) et dont le grand axe est orienté parallèlement à l'axe longitudinal dudit rail presseur (4) pour le montage coulissant de l'une desdites tiges parallèles (2) avec un degré de liberté angulaire. 8. Presser assembly according to claim 7, wherein said connecting member (3) comprises a passage (3d) of oblong section whose width corresponds to the diameter of one of said parallel rods (2) and whose major axis is oriented parallel to the longitudinal axis of said presser rail (4) for slidingly mounting one of said parallel rods (2) with an angular degree of freedom. 9. Ensemble presseur selon l'une des revendications 7 et 8, dans lequel l'une des butées solidaires desdites tiges parallèles (2) est un écrou (9) vissé sur une portions filetée (2e) des tiges respectives, lesdits organes de liaison (3) comportant chacun une ouverture (10) dont une dimension au moins correspond à la distance entre deux pans parallèles dudit écrou (9), pour que celui-ci ne puisse pénétrer dans ladite ouverture (10) que dans une position angulaire déterminée, de manière à permettre de détecter toute modification de la position initiale dudit écrou (9). 9. Presser assembly according to one of claims 7 and 8, wherein one of the stops integral with said parallel rods (2) is a nut (9) screwed on a threaded portions (2e) of the respective rods, said connecting members (3) each having an opening (10) of which at least one dimension corresponds to the distance between two parallel faces of said nut (9), so that it can penetrate into said opening (10) only in a given angular position, so as to detect any change in the initial position of said nut (9). 10. Ensemble presseur selon l'une des revendications 7 à 9, dans lequel ledit rail presseur (4) a une section creuse rectangulaire avec une ouverture longitudinale (4a) ménagée le long d'une de ses faces, lesdits moyens de fixation entre ledit rail presseur (4) et lesdites tiges (2) comportent un écrou (5) engagé sur un filetage (2a) de l'extrémité inférieure desdites tiges (2) respectives et dont la distance entre deux faces parallèles correspond sensiblement à la largeur de l'espace interne dudit rail presseur (4), les bord de ladite ouverture longitudinale (4a) étant serrés entre ledit écrou (5) et un contre organe de serrage (7) retenu par une butée (2d) solidaire de ladite tige (2). 10. Presser assembly according to one of claims 7 to 9, wherein said pressure rail (4) has a rectangular hollow section with a longitudinal opening (4a) provided along one of its faces, said fixing means between said pressing rail (4) and said rods (2) comprise a nut (5) engaged on a thread (2a) of the lower end of said respective rods (2) and whose distance between two parallel faces corresponds substantially to the width of the internal space of said pressure rail (4), the edges of said longitudinal opening (4a) being clamped between said nut (5) and a clamping member (7) retained by a stop (2d) integral with said rod (2) . 11. Ensemble selon la revendication 9, dans lequel ledit écrou (9) est muni de moyens pour augmenter la force de frottement lors de sa rotation sur la partie filetée (2e) de ladite tige coulissant (2). 11. The assembly of claim 9, wherein said nut (9) is provided with means for increasing the friction force during its rotation on the threaded portion (2e) of said sliding rod (2). 12. Ensemble presseur selon la revendication 10, dans lequel ledit contre organe de serrage (7) présente deux saillies parallèles (7b) chacune en prise avec une des faces latérales dudit rail presseur (4). 12. Presser assembly according to claim 10, wherein said clamping member (7) has two parallel projections (7b) each engaged with one of the lateral faces of said presser rail (4). 13. Ensemble presseur selon l'une des revendications précédentes, dans lequel ledit organe de liaison (3) présente un logement annulaire (3e) concentrique à l'axe longitudinal dudit passage (3d) de section oblongue, pour recevoir une extrémité d'un ressort hélicoïdal constituant lesdits moyens de rappel élastique (8) afin d'assurer le centrage et le guidage de l'une desdites tiges (2) dans ledit passage (3d). 13. Presser assembly according to one of the preceding claims, wherein said connecting member (3) has an annular housing (3e) concentric with the longitudinal axis of said passage (3d) oblong section, to receive an end of a helical spring constituting said elastic return means (8) to ensure the centering and guiding of one of said rods (2) in said passage (3d).
    EP20040405477 2003-09-01 2004-07-26 Presser assembly for separating blanks cut in a sheet Expired - Lifetime 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

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    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

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

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    US7699770B2 (en) 2005-02-24 2010-04-20 Ethicon Endo-Surgery, Inc. Device for non-invasive measurement of fluid pressure in an adjustable restriction device
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    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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