EP0320380B1 - Machine for stapling with an oscillating stapler head - Google Patents

Machine for stapling with an oscillating stapler head Download PDF

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Publication number
EP0320380B1
EP0320380B1 EP88403107A EP88403107A EP0320380B1 EP 0320380 B1 EP0320380 B1 EP 0320380B1 EP 88403107 A EP88403107 A EP 88403107A EP 88403107 A EP88403107 A EP 88403107A EP 0320380 B1 EP0320380 B1 EP 0320380B1
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EP
European Patent Office
Prior art keywords
machine
stapling
axis
guide sleeve
stapling device
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EP88403107A
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German (de)
French (fr)
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EP0320380A1 (en
Inventor
Rémy Vincent
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Societe de Developpement de Materiels dEmballage SODEME
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Societe de Developpement de Materiels dEmballage SODEME
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27F—DOVETAILED WORK; TENONS; SLOTTING MACHINES FOR WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES
    • B27F7/00—Nailing or stapling; Nailed or stapled work
    • B27F7/17—Stapling machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/60—Uniting opposed surfaces or edges; Taping
    • B31B50/68—Uniting opposed surfaces or edges; Taping by stitching, stapling or riveting

Definitions

  • the present invention relates to a stapling machine, intended in particular for assembling planar elements, in particular cardboard blanks in the context of the manufacture of packaging cases, this machine comprising a support plane on which the elements to be stapled are called to pass and an oscillating stapling device mounted on the frame of the machine, facing the support plane, and coupled to an actuating mechanism capable of rotating it in one direction and in the other, around a main axis substantially perpendicular to the direction of travel of the elements to be stapled and within the limits of an angular range of variable amplitude.
  • the present invention proposes to remedy all these drawbacks and, to do this, it provides a stapling machine of the aforementioned type, which is characterized in that it comprises means for varying the amplitude of the pivot range of the stapling device, means which consist of a mechanism for adjusting the distance from the main pivot axis of the stapling device, relative to the bearing plane of the elements to be stapled.
  • the adjustment mechanism comprises, according to a preferred embodiment of the invention, a guide sleeve in which the connecting rod is inserted with free sliding, a positioning arm on which the guide sleeve is mounted pivoting about an axis constituting the main pivot axis of the stapling device, this arm being articulated on the frame of the machine, around a second axis parallel to said main pivot axis and distant from the latter, and control means coupled to the positioning arm to bring it and immobilize it in a chosen angular position.
  • said control means comprise an electric motor driving in rotation at least one member screwed onto a respective threaded rod articulated to the positioning arm, at a point located between the main pivot axis and the second axis.
  • the technique for adjusting the range of the oscillating movement of the stapling device consisting of bringing the stapling elements closer or further away from the bearing plane, is to a much simpler and faster implementation than the manual interventions which until then had been necessary to practice directly in the actuation mechanism of the stapling device.
  • this adjustment can also be done during the operation of the stapling machine, since the guide sleeve can slide along the connecting rod without hampering its oscillating movement.
  • the adjustment mechanism according to the invention therefore guarantees optimal flexibility of adaptation in a production line for packaging cartons, without however affecting the flow rate or the production rate of the latter.
  • the present invention also offers the advantage of a possibility of automating the adjustment of the pivoting range of the stapling device, which can be obtained by placing the electric motor driving the positioning arm, under the order for example from a detector of the running speed of the elements to be stapled.
  • the stapling machine according to the invention is built around a frame 1 which, in a manner known per se, carries a stapling head 2, single or double (shown in dotted lines), suspended above a horizontal support plane 3 (shown in dashed lines), defined by cleat chains or conventional flexible belts.
  • the elements to be assembled mutually by stapling in this case cardboard blanks, arrive on this support plane from the preceding post, namely the folder, and pass continuously under the stapling head 2 under the ripple effect of chains or belts.
  • the stapling head 2 acts cyclically, to place each time a staple or a pair of staples on two blanks to be assembled, under the control of an eccentric actuation mechanism (not shown) wedged on the rotary shaft 4 mounted in the upper part of the frame 1.
  • the stapling head 2 can, in a manner also known per se, oscillate in the direction D of this movement. To do this, it is fixed to a support block 5 articulated at the bottom of four suspension arms, only two of which 6, 7 are visible in FIG. 1, these arms 6, 7 being themselves articulated at 8 and 9 at machine frame 1.
  • a riveting pallet 10 is likewise suspended from the frame 1, by means of four arms 11, 12 (shown in part) and is further connected, by articulated links 13, to the support block 5 of the stapling head, to follow the movement oscillating from the latter.
  • This oscillating movement of the stapling head is more precisely produced by a control rod 14 which, under the control of an eccentric actuation mechanism 14 wedged on the rotary shaft 4 (shown in a tearing of the frame on the Figure 1), can rotate, in one direction and in the other, around a horizontal axis X substantially perpendicular to the direction of advance D of the elements to be stapled.
  • the articulation 16 between the control rod 14 and its actuation mechanism 15 is further supported by an elbow lever 17, itself articulated to the frame.
  • the control rod 14 is coupled, by an articulated link 18, to the front of the support block 5 of the stapling head.
  • a mechanism is provided for adjusting the amplitude of the pivoting range or of the oscillating movement of the control rod 14 and, consequently, of the stapling device constituted by the stapling head. 2 and the riveting pallet 10 which extends under the latter to cooperate with it.
  • this adjustment mechanism comprises a positioning arm 19, a first end of which is articulated on the frame 1, around an axis Y parallel to the pivot axis X of the connecting rod 14.
  • the arm 19 which is in fact essentially formed by two parallel branches 20, 21, carries, at its second end, a guide sleeve 22 (shown in a cutaway in FIG. 1) pivotally mounted, between these two branches, by two lateral pins 23, 24 (see FIG. 2) which define the pivot axis X, this sleeve 22 freely sliding receiving the control rod 14.
  • the positioning arm 19 is, at its middle part, suspended, by two rods of articulated vertical connection 25, to a mechanism for controlling its angular position, shown diagrammatically in FIG. 4, the two connecting rods 25 being articulated at 25a on the arm 9.
  • this control mechanism comprises a small electric motor 26 driving, by means of a transmission 27, 28, a first horizontal pulley 29, the hub of which is screwed onto a vertical threaded rod 30, articulated by its lower end, at the top of one of the connecting rods 25, as indicated at 31 in FIG. 1.
  • a belt 32 passes around the pulley 29 and a second horizontal pulley 33, the hub is screwed onto a second threaded rod 34, parallel to the first and articulated at the top of the second connecting rod 25.
  • the pulleys 29, 33 and the belt 32 can of course be replaced respectively by toothed wheels and a chain.
  • FIG. 2 shows the structural details of the guide sleeve 22.
  • this guide sleeve 22 consists of two parts, namely a main shell 35 which carries the two pins side 23, 24 and a cover 36 which is assembled by screws 37, 38 to the shell 35, after positioning of the control rod 14 inside the latter.
  • the shell 35 and the cover 36 delimit, after assembly, a sliding cavity 39 of rectangular cross section.
  • the connecting rod 14 is applied only against the four corners of this cavity 39 by four longitudinal bearing surfaces 40 forming a single piece with a central core 41 in the form of H.
  • This special machining of the control rod 14, which aims to minimize friction, will in principle be limited to the section thereof, on which the sleeve 22 is called upon to slide (see FIG. 1). However, it will be good to cut or hollow out the remaining part of the connecting rod 14 to reduce the inertia.
  • a wedge-shaped take-up key 43 is retained, on the correspondingly shaped inner face of the cover 36 of the guide sleeve 22, by a screw-nut assembly 44 joining two external extensions 45, 46 of these two parts. It is in fact this key 43 which defines, with the shell 35, the sliding cavity 39 of the guide sleeve.
  • the use of the key to take up play 43 avoids the need for precise sizing of the cavity 39.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Dovetailed Work, And Nailing Machines And Stapling Machines For Wood (AREA)
  • Making Paper Articles (AREA)
  • Soil Working Implements (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Abstract

The present invention relates to a stapling machine, intended, in particular, for assembling plane elements, this machine comprising a bearing plane over which elements to be stapled are required to proceed and a stapling device (2, 10) mounted on the frame (1) of the machine, opposite the bearing plane, so as to be capable of oscillating about an axis (X). This machine comprises means for varying the amplitude of the oscillations of the stapling device (2, 10), which consist of a mechanism for adjusting the distance of the pivoting axis (X) of the stapling device (2, 10) relative to the bearing plane of the elements to be stapled. This adjusting mechanism preferably comprises a pivoting arm (19), with an angular position which can be adjusted, at the end of which is pivotably mounted, about the axis (X), a guide sleeve (22) in which slides a connecting rod (14) coupling the stapling device (2, 10) to its actuating mechanism (4, 15). Application particularly to the continuous stapling of cardboard blanks within the sphere of packing-case manufacture. <IMAGE>

Description

La présente invention se rapporte à une machine à agrafer, destinée en particulier à l'assemblage d'éléments plans, notamment de flans en carton dans le cadre de la fabrication de caisses d'emballage, cette machine comprenant un plan d'appui sur lequel les éléments à agrafer sont appelés à défiler et un dispositif d'agrafage oscillant monté sur le bâti de la machine, face au plan d'appui, et accouplé à un mécanisme d'actionnement apte à le faire pivoter dans un sens et dans l'autre, autour d'une axe principal sensiblement perpendiculaire à la direction de défilement des éléments à agrafer et dans les limites d'une plage angulaire d'amplitude variable.The present invention relates to a stapling machine, intended in particular for assembling planar elements, in particular cardboard blanks in the context of the manufacture of packaging cases, this machine comprising a support plane on which the elements to be stapled are called to pass and an oscillating stapling device mounted on the frame of the machine, facing the support plane, and coupled to an actuating mechanism capable of rotating it in one direction and in the other, around a main axis substantially perpendicular to the direction of travel of the elements to be stapled and within the limits of an angular range of variable amplitude.

Dans les chaînes de fabrication de caisses d'emballage en carton, on utilise presque exclusivement des machines à agrafer à tête oscillante, simple ou double, qui permettent d'agrafer les flans en carton sans interruption de leur mouvement de défilement continu sous la tête d'agrafage, c'est-à-dire sans réduction de la cadence de travail de la chaîne de fabrication.In the production lines for cardboard packaging cases, stapling machines with oscillating head, single or double, are almost exclusively used, which make it possible to staple the cardboard blanks without interrupting their continuous movement of movement under the head. stapling, that is to say without reducing the rate of work of the production line.

Il s'avère toutefois nécessaire, de temps à autre, de modifier l'amplitude de la plage de pivotement de la tête d'agrafage en fonction de différents paramètres et notamment de la vitesse de défilement des flans à agrafer, qu'il peut être nécessaire de faire varier suivant l'écartement souhaité entre deux agrafes ou deux groupes d'agrafes successifs. Cette modification d'amplitude ne peut à l'heure actuelle être obtenue que par des réglages manuels, effectués à l'aide d'une clé, sur le mécanisme d'actionnement de la tête d'agrafage, pour par exemple modifier l'excentricité du maneton de la manivelle d'entraînement.It is however necessary, from time to time, to modify the amplitude of the pivoting range of the stapling head as a function of different parameters and in particular the speed of travel of the blanks to be stapled, as it may be. necessary to vary according to the desired spacing between two staples or two groups of successive staples. This change in amplitude can currently only be obtained by manual adjustments, carried out using a key, on the actuation mechanism of the stapling head, for example to modify the eccentricity of the crank pin of the drive crank.

Or, ces réglages, qui sont longs et complexes au point de dépasser souvent la compétence du conducteur de la machine à agrafer, ont pour inconvénient supplémentaire d'imposer un arrêt prolongé de cette machine et donc de l'ensemble de la chaîne de fabrication, ce qui est tout à fait incompatible avec les cadences élevées de production que l'on cherche à obtenir.However, these adjustments, which are long and complex to the point of often exceeding the competence of the operator of the stapling machine, have the additional drawback of imposing a prolonged shutdown of this machine and therefore of the entire production chain, which is completely incompatible with the high production rates that one seeks to obtain.

La présente invention se propose de remédier à tous ces inconvénients et, pour ce faire, elle propose une machine à agrafer du type précité, qui se caractérise en ce qu'elle comprend des moyens pour faire varier l'amplitude de la plage de pivotement du dispositif d'agrafage, moyens qui consistent en un mécanisme de réglage de la distance de l'axe principal de pivotement du dispositif d'agrafage, par rapport au plan d'appui des éléments à agrafer.The present invention proposes to remedy all these drawbacks and, to do this, it provides a stapling machine of the aforementioned type, which is characterized in that it comprises means for varying the amplitude of the pivot range of the stapling device, means which consist of a mechanism for adjusting the distance from the main pivot axis of the stapling device, relative to the bearing plane of the elements to be stapled.

Dans une machine à agrafer dans laquelle le dispositif d'agrafage est accouplé à son mécanisme d'actionnement par une bielle de commande, le mécanisme de réglage comprend, selon un mode de réalisation préféré de l'invention, un manchon de guidage dans lequel la bielle est insérée à coulissement libre, un bras de positionnement sur lequel le manchon de guidage est monté pivotant autour d'un axe constituant l'axe principal de pivotement du dispositif d'agrafage, ce bras étant articulé sur le bâti de la machine, autour d'un second axe parallèle audit axe principal de pivotement et distant de ce dernier, et des moyens de commande accouplés au bras de positionnement pour l'amener et l'immobiliser dans une position angulaire choisie.In a stapling machine in which the stapling device is coupled to its actuation mechanism by a control rod, the adjustment mechanism comprises, according to a preferred embodiment of the invention, a guide sleeve in which the connecting rod is inserted with free sliding, a positioning arm on which the guide sleeve is mounted pivoting about an axis constituting the main pivot axis of the stapling device, this arm being articulated on the frame of the machine, around a second axis parallel to said main pivot axis and distant from the latter, and control means coupled to the positioning arm to bring it and immobilize it in a chosen angular position.

Avantageusement, lesdits moyens de commande comprennent un moteur électrique entraînant en rotation au moins un organe vissé sur une tige filetée respective articulée au bras de positionnement, en un point situé entre l'axe principal de pivotement et le second axe.Advantageously, said control means comprise an electric motor driving in rotation at least one member screwed onto a respective threaded rod articulated to the positioning arm, at a point located between the main pivot axis and the second axis.

Comme on le comprendra aisément, la technique de réglage de la plage du mouvement oscillant du dispositif d'agrafage, consistant à rapprocher ou à éloigner du plan d'appui des éléments à agrafer l'axe de pivotement principal de ce dispositif, est d'une mise en oeuvre bien plus simple et rapide que les interventions manuelles qu'il était jusqu'alors nécessaire de pratiquer directement dans le mécanisme d'actionnement du dispositif d'agrafage.As will be readily understood, the technique for adjusting the range of the oscillating movement of the stapling device, consisting of bringing the stapling elements closer or further away from the bearing plane, is to a much simpler and faster implementation than the manual interventions which until then had been necessary to practice directly in the actuation mechanism of the stapling device.

Exécuté à l'aide du mécanisme conforme au mode de réalisation préféré de l'invention, ce réglage peut en outre se faire dans le cours du fonctionnement de la machine à agrafer, puisque le manchon de guidage peut glisser le long de la bielle de commande sans entraver son mouvement oscillant. Le mécanisme de réglage selon l'invention garantit donc une souplesse d'adaptation optimale dans une chaîne de fabrication de cartons d'emballage, sans pour autant affecter le débit ou la cadence de production de cette dernière.Executed using the mechanism according to the preferred embodiment of the invention, this adjustment can also be done during the operation of the stapling machine, since the guide sleeve can slide along the connecting rod without hampering its oscillating movement. The adjustment mechanism according to the invention therefore guarantees optimal flexibility of adaptation in a production line for packaging cartons, without however affecting the flow rate or the production rate of the latter.

La présente invention offre en outre l'avantage d'une possibilité d'automatisation du réglage de la plage de pivotement du dispositif d'agrafage, que l'on pourra obtenir de plaçant le moteur électrique d'entraînement du bras de positionnement, sous la commande par exemple d'un détecteur de la vitesse de défilement des éléments à agrafer.The present invention also offers the advantage of a possibility of automating the adjustment of the pivoting range of the stapling device, which can be obtained by placing the electric motor driving the positioning arm, under the order for example from a detector of the running speed of the elements to be stapled.

Une machine à agrafer conforme au mode de réalisation préféré de la présente invention va maintenant être décrite plus en détails, mais uniquement à titre d'exemple non-limitatif, en référence aux dessins annexés dans lesquels :

  • . la figure 1 est une vue de côté, avec arrachements, de la partie haute de cette machine à agrafer ;
  • . la figure 2 est une vue en couple agrandie, selon la ligne II-II de la figure 1 ;
  • . la figure 3 est une vue en coupe agrandie, selon la ligne III-III de la figure 2 ; et
  • . la figure 4 est un schéma de principe en perspective de la machine de la figure 1.
A stapling machine according to the preferred embodiment of the present invention will now be described in more detail, but only by way of non-limiting example, with reference to the accompanying drawings in which:
  • . Figure 1 is a side view, with parts broken away, of the upper part of this stapling machine;
  • . Figure 2 is an enlarged torque view, along the line II-II of Figure 1;
  • . Figure 3 is an enlarged sectional view along line III-III of Figure 2; and
  • . Figure 4 is a perspective block diagram of the machine of Figure 1.

La machine à agrafer selon l'invention est construite autour d'un bâti 1 qui, d'une manière connue en soi, porte une tête d'agrafage 2, simple ou double (représentée en pointillés), suspendue au-dessus d'un plan d'appui horizontal 3 (représenté en traits mixtes), défini par des chaînes à taquets ou des courroies souples classiques. Les éléments à assembler mutuellement par agrafage, en l'occurrence des flans en carton, parviennent sur ce plan d'appui en provenance du post qui précède, à savoir la plieuse, et défilent en continu sous la tête d'agrafage 2 sous l'effet d'entraînement des chaînes ou des courroies. La tête d'agrafage 2 agit cycliquement, pour poser à chaque fois une agrafe ou une paire d'agrafes sur deux flans à assembler, sous la commande d'un mécanisme d'actionnement à excentrique (non représenté) calé sur l'arbre rotatif 4 monté en partie haute du bâti 1.The stapling machine according to the invention is built around a frame 1 which, in a manner known per se, carries a stapling head 2, single or double (shown in dotted lines), suspended above a horizontal support plane 3 (shown in dashed lines), defined by cleat chains or conventional flexible belts. The elements to be assembled mutually by stapling, in this case cardboard blanks, arrive on this support plane from the preceding post, namely the folder, and pass continuously under the stapling head 2 under the ripple effect of chains or belts. The stapling head 2 acts cyclically, to place each time a staple or a pair of staples on two blanks to be assembled, under the control of an eccentric actuation mechanism (not shown) wedged on the rotary shaft 4 mounted in the upper part of the frame 1.

Pour pouvoir exercer son action tout en suivant le mouvement de défilement continu des flans à assembler, la tête d'agrafage 2 peut, d'une manière également connue en soi, osciller dans la direction D de ce mouvement. Pour ce faire, elle est fixée à un bloc de support 5 articulé au bas de quatre bras de suspension, dont deux seulement 6, 7 sont visibles sur la figure 1, ces bras 6, 7 étant eux-mêmes articulés en 8 et 9 au bâti 1 de la machine. A l'arrière de la tête d'agrafage 2, une palette de rivetage 10 est suspendue de la même façon au bâti 1, par l'intermédiaire de quatre bras 11, 12 (représentés en partie) et est en outre reliée, par des liaisons articulées 13, au bloc de support 5 de la tête d'agrafage, pour suivre le mouvement oscillant de cette dernière.In order to be able to exert its action while following the continuous movement of movement of the blanks to be assembled, the stapling head 2 can, in a manner also known per se, oscillate in the direction D of this movement. To do this, it is fixed to a support block 5 articulated at the bottom of four suspension arms, only two of which 6, 7 are visible in FIG. 1, these arms 6, 7 being themselves articulated at 8 and 9 at machine frame 1. At the rear of the stapling head 2, a riveting pallet 10 is likewise suspended from the frame 1, by means of four arms 11, 12 (shown in part) and is further connected, by articulated links 13, to the support block 5 of the stapling head, to follow the movement oscillating from the latter.

Ce mouvement oscillant de la tête d'agrafage est plus précisément produit par une bielle de commande 14 qui, sous la commande d'un mécanisme d'actionnement à excentrique 14 calé sur l'arbre rotatif 4 (représenté dans un arrachement du bâti sur la figure 1), peut pivoter, dans un sens et dans l'autre, autour d'un axe horizontal X sensiblement perpendiculaire à la direction d'avance D des éléments à agrafer. L'articulation 16 entre la bielle de commande 14 et son mécanisme d'actionnement 15 est en outre soutenue par un levier coudé 17, lui-même articulé au bâti. Par son extrémité inférieure, la bielle de commande 14 est accouplée, par une liaison articulée 18, à l'avant du bloc de support 5 de la tête d'agrafage.This oscillating movement of the stapling head is more precisely produced by a control rod 14 which, under the control of an eccentric actuation mechanism 14 wedged on the rotary shaft 4 (shown in a tearing of the frame on the Figure 1), can rotate, in one direction and in the other, around a horizontal axis X substantially perpendicular to the direction of advance D of the elements to be stapled. The articulation 16 between the control rod 14 and its actuation mechanism 15 is further supported by an elbow lever 17, itself articulated to the frame. By its lower end, the control rod 14 is coupled, by an articulated link 18, to the front of the support block 5 of the stapling head.

Selon la caractéristique première de la présente invention, un mécanisme est prévu pour régler l'amplitude de la plage de pivotement ou du mouvement oscillant de la bielle de commande 14 et, par conséquent, du dispositif d'agrafage constitué par la tête d'agrafage 2 et la palette de rivetage 10 qui se prolonge sous cette dernière pour coopérer avec elle.According to the first characteristic of the present invention, a mechanism is provided for adjusting the amplitude of the pivoting range or of the oscillating movement of the control rod 14 and, consequently, of the stapling device constituted by the stapling head. 2 and the riveting pallet 10 which extends under the latter to cooperate with it.

Dans le mode de réalisation exemplifié, ce mécanisme de réglage comprend un bras de positionnement 19 dont une première extrémité est articulée sur la bâti 1, autour d'une axe Y parallèle à l'axe de pivotement X de la bielle 14. Le bras 19, qui est en fait formé essentiellement de deux branches parallèles 20, 21, porte, à sa seconde extrémité, un manchon de guidage 22 (représenté dans un arrachement de la figure 1) monté à pivotement, entre ces deux branches, par deux tourillons latéraux 23, 24 (voir figure 2) qui définissent l'axe de pivotement X, ce manchon 22 recevant à coulissement libre la bielle de commande 14. Par ailleurs, le bras de positionnement 19 est, à sa partie médiane, suspendu, par deux tiges de liaison verticales articulées 25, à une mécanisme de commande de sa position angulaire, représenté schématiquement sur la figure 4, les deux tiges de liaison 25 étant articulées en 25a sur le bras 9.In the exemplified embodiment, this adjustment mechanism comprises a positioning arm 19, a first end of which is articulated on the frame 1, around an axis Y parallel to the pivot axis X of the connecting rod 14. The arm 19 , which is in fact essentially formed by two parallel branches 20, 21, carries, at its second end, a guide sleeve 22 (shown in a cutaway in FIG. 1) pivotally mounted, between these two branches, by two lateral pins 23, 24 (see FIG. 2) which define the pivot axis X, this sleeve 22 freely sliding receiving the control rod 14. Furthermore, the positioning arm 19 is, at its middle part, suspended, by two rods of articulated vertical connection 25, to a mechanism for controlling its angular position, shown diagrammatically in FIG. 4, the two connecting rods 25 being articulated at 25a on the arm 9.

Pour l'essentiel, ce mécanisme de commande comprend un petit moteur électrique 26 entraînant, par l'intermédiaire d'une transmission 27, 28, une première poulie horizontale 29 dont le moyeu est vissé sur un tige filetée verticale 30, articulée, par son extrémité inférieure, au sommet de l'une des tiges de liaison 25, comme indiqué en 31 sur la figure 1. Une courroie 32 passe autour de la poulie 29 et d'une seconde poulie horizontale 33 dont le moyeu est vissé sur une seconde tige filetée 34, parallèle à la première et articulée au sommet de la seconde tige de liaison 25. Les poulies 29, 33 et la courroie 32 peuvent bien entendu être remplacées respectivement par des roues dentées et une chaîne.Essentially, this control mechanism comprises a small electric motor 26 driving, by means of a transmission 27, 28, a first horizontal pulley 29, the hub of which is screwed onto a vertical threaded rod 30, articulated by its lower end, at the top of one of the connecting rods 25, as indicated at 31 in FIG. 1. A belt 32 passes around the pulley 29 and a second horizontal pulley 33, the hub is screwed onto a second threaded rod 34, parallel to the first and articulated at the top of the second connecting rod 25. The pulleys 29, 33 and the belt 32 can of course be replaced respectively by toothed wheels and a chain.

On comprendra que, dans le mécanisme de commande ainsi conçu, une rotation du moteur électrique 26, dans un sens ou dans l'autre, provoquera un pivotement vers le haut ou vers le bas du bras de positionnement 19 qui, par suite, relèvera ou abaissera le manchon de guidage 22 par coulissement le long de la bielle de commande 14 et ce, même si cette dernière est en train d'osciller.It will be understood that, in the control mechanism thus designed, a rotation of the electric motor 26, in one direction or the other, will cause an upward or downward pivoting of the positioning arm 19 which, as a result, will raise or will lower the guide sleeve 22 by sliding along the control rod 14, even if the latter is oscillating.

De la sorte, on peut, sans interrompre le fonctionnement de la machine à agrafer, régler très facilement la position en hauteur de l'axe de pivotement X de la bielle 14, et, par voie de conséquence, l'amplitude de la plage du mouvement oscillant du dispositif d'agrafage 2, 10.In this way, it is possible, without interrupting the operation of the stapling machine, very easily to adjust the position in height of the pivot axis X of the connecting rod 14, and, consequently, the amplitude of the range of the oscillating movement of the stapling device 2, 10.

La figure 2 montre les détails de structure du manchon de guidage 22. Pour que soit simplifié son montage autour de la bielle de commande 14, ce manchon de guidage 22 est constitué de deux pièces, à savoir une coque principale 35 qui porte les deux tourillons latéraux 23, 24 et un couvercle 36 que l'on assemble par des vis 37, 38 à la coque 35, après mise en place de la bielle de commande 14 à l'intérieur de cette dernière.FIG. 2 shows the structural details of the guide sleeve 22. In order to simplify its mounting around the control rod 14, this guide sleeve 22 consists of two parts, namely a main shell 35 which carries the two pins side 23, 24 and a cover 36 which is assembled by screws 37, 38 to the shell 35, after positioning of the control rod 14 inside the latter.

La coque 35 et le couvercle 36 délimitent, après assemblage, une cavité de coulissement 39 de section transversale rectangulaire. La bielle 14 s'applique uniquement contre les quatre coins de cette cavité 39 par quatre portées longitudinales 40 formant une seule pièce avec une âme centrale 41 en forme de H. Cet usinage spécial de la bielle de commande 14, qui a pour but de minimiser les frottements, sera en principe limité au tronçon de celle-ci, sur lequel le manchon 22 est appelé à coulisser (voir figure 1). Il sera bon toutefois d'ajourer ou d'évider la partie restante de la bielle 14 pour en réduire l'inertie.The shell 35 and the cover 36 delimit, after assembly, a sliding cavity 39 of rectangular cross section. The connecting rod 14 is applied only against the four corners of this cavity 39 by four longitudinal bearing surfaces 40 forming a single piece with a central core 41 in the form of H. This special machining of the control rod 14, which aims to minimize friction, will in principle be limited to the section thereof, on which the sleeve 22 is called upon to slide (see FIG. 1). However, it will be good to cut or hollow out the remaining part of the connecting rod 14 to reduce the inertia.

En revenant à la figure 1, on peut encore voir qu'une clavette de rattrapage de jeu 43 en forme de coin, est retenue, sur la face intérieure de forme correspondante du couvercle 36 du manchon de guidage 22, par un ensemble vis-écrou 44 réunissant deux prolongements extérieurs 45, 46 de ces deux pièces. C'est en fait cette clavette 43 qui délimite, avec la coque 35, la cavité de coulissement 39 du manchon de guidage. L'utilisation de la clavette de rattrapage de jeu 43 évite la nécessité d'un dimensionnement précis de la cavité 39.Returning to FIG. 1, it can still be seen that a wedge-shaped take-up key 43 is retained, on the correspondingly shaped inner face of the cover 36 of the guide sleeve 22, by a screw-nut assembly 44 joining two external extensions 45, 46 of these two parts. It is in fact this key 43 which defines, with the shell 35, the sliding cavity 39 of the guide sleeve. The use of the key to take up play 43 avoids the need for precise sizing of the cavity 39.

Claims (6)

1. Machine for stapling, intended in particular for the assembly of flat elements, in particular cardboard flongs within the context of the manufacture of packing cases, the said machine comprising a support surface (3) on which the elements to be stapled are to pass in succession, and an oscillating stapling device (2, 10) mounted on the frame of the machine, facing the support surface, and connected to a drive mechanism (15) for making it pivot in one direction and in the other about a main axis (X) substantially perpendicular to the direction of passage (D) of the elements to be stapled and within the limits of an angular range of variable amplitude, the said stapling machine being characterised in that it comprises means for varying the amplitude of the range of pivot of the stapling device (2, 10), which means consist of a mechanism for adjusting the distance of the main pivot axis (X) of the stapling device (2, 10) in relation to the support surface (3) of the elements to be stapled.
2. Machine for stapling according to Claim 1, characterised in that the stapling device (2, 10) is connected to its drive mechanism (15) by means of a control connecting slider (14) and in that the said adjustment mechanism comprises a guide sleeve (22) into which the connecting slider is inserted sliding freely, a positioning arm (19) on which the guide sleeve is mounted pivoting about an axis constituting the main pivot axis (X) of the stapling device (2, 10), which arm (19) is hinged onto the frame (1) of the machine, about a second axis (Y) parallel to the main pivot axis and remote from the latter, and control means connected to the positioning arm (19) to convey it and immobilise it in a chosen angular position.
3. Machine for stapling according to Claim 2, characterised in that the said control means comprise an electric motor (26) bringing into rotation at least one member (29, 34) screwed onto a respective threaded shank (30, 34) hinged onto the positioning arm (19) at a point situated between the main pivot axis (X) and the second axis (Y).
4. Machine for stapling according to Claim 2 or 3, characterised in that the guide sleeve (22) is composed of two pieces, being a main body (35) bearing two lateral pivot pins (23, 24) defining the main pivot axis (X), and a cover (36) assembled on the body (35) to define with the latter the sliding cavity (39) of the control connecting slider (14).
5. Machine for stapling according to any one of Claims 2 to 4, characterised in that a removable cotter pin for the taking up of play (43) in the form of a wedge is held on an inner surface of corresponding shape of the guide sleeve (22).
6. Machine for stapling according to any one of Claims 2 to 5, characterised in that the sliding cavity (39) of the guide sleeve (22) has a rectangular transverse section and the control connecting slider (14) is only applied against the four corners of this cavity by four longitudinal bearing surfaces (40) forming a single piece with a central core (41).
EP88403107A 1987-12-09 1988-12-07 Machine for stapling with an oscillating stapler head Expired - Lifetime EP0320380B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88403107T ATE76603T1 (en) 1987-12-09 1988-12-07 STAPLING MACHINE WITH A SWINGING STAPLER HEAD.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8717127A FR2624431B1 (en) 1987-12-09 1987-12-09 STAPLING MACHINE WITH OSCILLATING STAPLING HEAD
FR8717127 1987-12-09

Publications (2)

Publication Number Publication Date
EP0320380A1 EP0320380A1 (en) 1989-06-14
EP0320380B1 true EP0320380B1 (en) 1992-05-27

Family

ID=9357667

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88403107A Expired - Lifetime EP0320380B1 (en) 1987-12-09 1988-12-07 Machine for stapling with an oscillating stapler head

Country Status (5)

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EP (1) EP0320380B1 (en)
AT (1) ATE76603T1 (en)
DE (1) DE3871506D1 (en)
ES (1) ES2031269T3 (en)
FR (1) FR2624431B1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2664847B1 (en) * 1990-07-18 1992-10-30 Dev Mat Emballage CONTINUOUS STAPLING DEVICE WITH FIXED RIVET PALLET AND STAPLING MACHINE EQUIPPED WITH SUCH A DEVICE.
FR2736578B1 (en) * 1995-07-11 1997-08-22 Sodeme Sa STAPLING MACHINE WITH MOBILE STAPLING HEAD
ES2128230B1 (en) * 1996-02-21 1999-12-16 Volpak Sa BAG STAPLER DEVICE FOR AUTOMATIC PACKING MACHINES.
CN106626521A (en) * 2016-12-09 2017-05-10 重庆锦沙沣包装有限公司 Carton binding device
CN113650354B (en) * 2021-08-19 2023-04-18 丰城市星泽科技有限公司 Nailing machine is used in corrugated box production

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3221067A1 (en) * 1982-06-04 1983-12-08 Wilhelm Bahmüller Maschinenbau Präzisionswerkzeuge GmbH, 7067 Plüderhausen Stapling head for a wire-stapling machine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1886971A (en) * 1929-07-29 1932-11-08 Saranac Automatic Machine Corp Carton stapling machine
DE1103120B (en) * 1956-08-07 1961-03-23 Behn Verpackung Erwin Device for stapling together the bottom side covers of cross floors on paper sacks by means of wire clips or the like.
FR2170345A5 (en) * 1972-01-31 1973-09-14 Gautronneau Gilles
IT1078085B (en) * 1977-02-17 1985-05-08 Corali Bruno SEWING MACHINE PARTICULARLY FOR PACKAGING BOXES
CH662987A5 (en) * 1984-01-26 1987-11-13 Grapha Holding Ag SADDLE STAPER.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3221067A1 (en) * 1982-06-04 1983-12-08 Wilhelm Bahmüller Maschinenbau Präzisionswerkzeuge GmbH, 7067 Plüderhausen Stapling head for a wire-stapling machine

Also Published As

Publication number Publication date
EP0320380A1 (en) 1989-06-14
FR2624431B1 (en) 1994-07-22
DE3871506D1 (en) 1992-07-02
ATE76603T1 (en) 1992-06-15
ES2031269T3 (en) 1992-12-01
FR2624431A1 (en) 1989-06-16

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