EP0576332B1 - Crimp head for food tins comprising tolerance regulating means - Google Patents
Crimp head for food tins comprising tolerance regulating means Download PDFInfo
- Publication number
- EP0576332B1 EP0576332B1 EP93401560A EP93401560A EP0576332B1 EP 0576332 B1 EP0576332 B1 EP 0576332B1 EP 93401560 A EP93401560 A EP 93401560A EP 93401560 A EP93401560 A EP 93401560A EP 0576332 B1 EP0576332 B1 EP 0576332B1
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- EP
- European Patent Office
- Prior art keywords
- wheel
- cam surface
- axis
- counter
- wheels
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 230000001105 regulatory effect Effects 0.000 title description 2
- 238000002788 crimping Methods 0.000 claims description 22
- 230000000750 progressive effect Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims 1
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B7/00—Closing containers or receptacles after filling
- B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
- B65B7/28—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by applying separate preformed closures, e.g. lids, covers
- B65B7/2842—Securing closures on containers
- B65B7/285—Securing closures on containers by deformation of the closure
- B65B7/2857—Securing closures on containers by deformation of the closure and the container rim
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D51/00—Making hollow objects
- B21D51/16—Making hollow objects characterised by the use of the objects
- B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
- B21D51/30—Folding the circumferential seam
- B21D51/32—Folding the circumferential seam by rolling
Definitions
- the present invention relates to a crimping head according to the preamble of claim 1.
- a device of this type intended for sealing the cans by crimping the lid onto the can body, is known from the US patent -A-2 907 293.
- this document shows a crimping device for cans containing guide means formed by two superimposed cam rollers moving on two cam surfaces each having a straight vertical face.
- This device does not allow easy adjustment of the clearance between the assembly of the two rollers and the cam and cam follower surfaces between which this assembly is interposed.
- the object of the present invention is to remedy the drawbacks of the devices of the prior art.
- Such an arrangement allows that the play can be eliminated by adjusting the position, in the axial direction, of the second roller relative to the cam follower surface.
- the second roller has a diameter smaller than that of the first roller and the cam surface has a transverse dimension covering the combined thickness of the two juxtaposed rollers, while the cam follower surface has a transverse dimension lesser, such that it extends only opposite the second roller.
- the cam and cam follower surfaces are formed by the sides of a groove hollowed out in a plate along an appropriate layout and with a constant cross section, the second roller being adjacent to the bottom of this groove.
- the distance between the cam follower surface and the work surface is constant, and the clearance is adjusted by moving the second roller, at least, in the direction of its axis relative to said plane.
- the mutual difference of the two rollers in the direction of their common axis is constant. This means in particular that, when the adjustment is made by axial displacement of the second roller, it is in fact the two rollers which are moved together. Such an arrangement has no effect on the precision of the guidance, since the cam surface is a cylindrical surface of generatrices parallel to said axis.
- the two rollers are mounted coaxially around the same journal on which they are fixed in the axial direction, and this journal is subject to the support part of the wheel by fixing means allowing the adjustment of its position relative to said plane in the direction of the common axis of the two rollers.
- the pin may have a threaded end which is screwed into a threaded cavity formed in said support piece in the direction of the common axis of the two rollers, this cavity being opened by a radial slot so that it is located produced between two elastically deformable fork legs, which can be mutually tightened or loosened to block the trunnion between them on the support piece or allow its position to be adjusted by progressive screwing or unscrewing.
- Figure 1 illustrates the kinematics of a crimping head for shaped boxes.
- Figure 2 shows schematically, in axial section, the main elements associated with a wheel in a crimping head according to the invention.
- Each wheel 3 is carried by a part 4 comprising a hub 4a pivoting about a vertical axis Y, and two arms 4b, 4c secured to the hub 4a.
- the wheel is mounted at the end of one of these arms, designated by the reference 4b, to which its axis of rotation V is linked.
- the pivot axis Y of the hub 4a is required to rotate around the axis X from the crimping head, remaining at a constant distance R from this axis.
- a roller 10 At the end of the other arm 4c of the support piece 4 is mounted a roller 10 whose axis of rotation Z, vertical, is linked to this arm.
- the roller 10 is forced to roll against a cam surface 7a whose layout is such that it imposes on the wheel 3, via the part 4 while the hub 4a of the latter performs its movement of revolution around the axis X, strictly follow the outline of box 1 to be crimped.
- This result is illustrated in FIG. 1, where two positions D, D 'of the part 4 and its accessories have been indicated, which, in the position D', are designated by the same references as in the position D, but assorted of the sign ['].
- FIG. 1 shows that the hub 4a is mounted between the branches 5a, 5b of a part 5 further comprising a rotary sleeve 5c centered on the axis X, which can rotate around this axis but not move along that -this.
- the hub 4a can rotate around the axis X, its own axis Y remaining at a constant distance R from the latter, while maintaining a constant spacing with the plane P, that is to say by describing a circle of axis X parallel to the plane P and distant from it by a fixed fixed quantity.
- the wheel 3 is forced to move while remaining at a constant height above the plane P.
- the head 4d of the arm 4c located at the end of the latter remote from the hub 4a, which moves while remaining in a mean plane Q parallel to the plane P and located at a fixed fixed distance H from this plane.
- the head 4d of the arm 4c is equipped with a guide assembly 6 including the aforementioned roller 10, which compels the latter to follow, when the hub 4a rotates around the axis X, the cam surface 7a, produced in a fixed plate 8 known as a "reproduction cam", located at a determined distance J above the plane Q.
- This surface is a cylindrical surface whose vertical generators rest on a line such that the axis Z of the roller 10 follows a line G designed so that the axis V of wheel 3 moves accordingly along a path T "reproducing", taking into account the radius of the wheel, the outline of box 1.
- the guide assembly 6 comprises a pin 9 fixed to the head 4d and offering a general shape of revolution around a vertical axis Z; this journal carries, in addition to the roller 10, a second rotating roller 11; these two rollers are mounted one above the other so that they can rotate around the same axis coinciding with the aforementioned axis Z.
- the lower roller 10, of slightly larger diameter than the upper roller 11, has a cylindrical outer surface of revolution of axis Z and rolls against the cam surface 7a.
- the upper roller 11 for its part has an outer surface of revolution not cylindrical, but curved, its section through a radial plane, passing through the axis Z, being constituted by a slightly convex arc towards the outside.
- This roller cooperates with a cam follower surface 7b, produced in the plate 8 facing the cam surface 7a.
- the surface 7b extends, like the surface 7a, following a path parallel to the line G along which the Z axis must move. It is also a regulated surface, including the generators, instead of being parallel to the Z and X axes , make with them a small angle F of a few degrees.
- the distance between the cam 7a and cam follower 7b surfaces which form the sides of a groove 7 hollowed out in the plate 8, decreases as one moves away from the head 4d of the piece 4. As for the roller 11, it is adjacent to the bottom 7c of this groove.
- the cam follower surface 7b does not continue, in the direction of the head 4d, beyond the roller 11, so as not to interfere with the roller 10, of larger diameter, interposed between it ci and said head.
- the pin 9 is fixed to the head 4d by a threaded part 9a of axis Z which it comprises, which is screwed into a threaded conjugate passage which comprises the head 4d.
- a threaded part 9a of axis Z which it comprises, which is screwed into a threaded conjugate passage which comprises the head 4d.
- the convex roller 11 slides along a generatrix of the cam follower surface 7b inclined by the angle F relative to the axis X; it follows that, when one increases, by adjusting the position of the part 9 on the axis Z, the distance K of the roller 11 to the fixed plane Q where the head 4d moves, the clearance which existed between the surfaces 7a, 7b and the rollers 10, 11 of the guide assembly 6 decreases until it cancels, the two rollers 10, 11 then simultaneously pressing each against the surface 7a, 7b with which it cooperates, the roller 10 being in linear contact with the surface 7a and the roller 11 in point contact with the surface 7b.
- the pin 9 When this setting is reached, the pin 9 is blocked in the head 4d by clamping its threaded part in the threaded passage of the head 4d, the latter being for this purpose open by a slot 13; a screw is engaged in holes 12 drilled in the two corresponding branches, separated by this slot, for tighten elastically these against the threaded part 9a of the pin 9 and lock the latter by pinching.
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- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
- Tyre Moulding (AREA)
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Description
La présente invention se rapporte à une tête de sertissage selon le préambule de la revendication 1. Un dispositif de ce type, destiné à fermer de façon étanche les boîtes de conserve par sertissage du couvercle sur le corps de boîte, est connu par le brevet US-A-2 907 293.The present invention relates to a crimping head according to the preamble of claim 1. A device of this type, intended for sealing the cans by crimping the lid onto the can body, is known from the US patent -A-2 907 293.
En particulier, ce document montre un dispositif de sertissage de boîtes de conserve comportant des moyens de guidage formés par deux galets de came superposés se déplaçant sur deux surfaces de cames présentant chacune une face droite verticale. Ce dispositif ne permet pas le réglage facile du jeu entre l'ensemble des deux galets et les surfaces de came et de contre-came entre lesquelles cet ensemble est interposé.In particular, this document shows a crimping device for cans containing guide means formed by two superimposed cam rollers moving on two cam surfaces each having a straight vertical face. This device does not allow easy adjustment of the clearance between the assembly of the two rollers and the cam and cam follower surfaces between which this assembly is interposed.
L'objet de la présente invention consiste à remédier aux inconvénients des dispositifs de l'art antérieur.The object of the present invention is to remedy the drawbacks of the devices of the prior art.
Ce but est atteint par la forme de réalisation selon la revendication 1.This object is achieved by the embodiment according to claim 1.
Un tel agencement permet que le jeu peut être éliminé par réglage de la position, en direction axiale, du second galet par rapport à la surface de contre-came.Such an arrangement allows that the play can be eliminated by adjusting the position, in the axial direction, of the second roller relative to the cam follower surface.
Dans une forme de réalisation préférée, le second galet a un diamètre inférieur à celui du premier galet et la surface de came a une dimension transversale couvrant l'épaisseur combinée des deux galets juxtaposés, tandis que la surface de contre-came a une dimension transversale moindre, telle qu'elle s'étend seulement face au second galet.In a preferred embodiment, the second roller has a diameter smaller than that of the first roller and the cam surface has a transverse dimension covering the combined thickness of the two juxtaposed rollers, while the cam follower surface has a transverse dimension lesser, such that it extends only opposite the second roller.
Avantageusement, les surfaces de came et de contre-came sont constituées par les flancs d'une gorge creusée dans un plateau suivant un tracé approprié et avec une section transversale constante, le second galet étant adjacent au fond de cette gorge.Advantageously, the cam and cam follower surfaces are formed by the sides of a groove hollowed out in a plate along an appropriate layout and with a constant cross section, the second roller being adjacent to the bottom of this groove.
De préférence, la distance entre la surface de contre-came et le plan de travail est constante, et le réglage du jeu s'effectue par déplacement du second galet, au moins, dans la direction de son axe par rapport audit plan.Preferably, the distance between the cam follower surface and the work surface is constant, and the clearance is adjusted by moving the second roller, at least, in the direction of its axis relative to said plane.
Par ailleurs, on peut prévoir que l'écart mutuel des deux galets suivant la direction de leur axe commun soit constant. Cela signifie notamment que, lorsque le réglage s'effectue par déplacement axial du second galet, ce sont en fait les deux galets qui sont déplacés ensemble. Une telle disposition ne réagit en rien sur la précision du guidage, puisque la surface de came est une surface cylindrique de génératrices parallèles audit axe.Furthermore, it can be provided that the mutual difference of the two rollers in the direction of their common axis is constant. This means in particular that, when the adjustment is made by axial displacement of the second roller, it is in fact the two rollers which are moved together. Such an arrangement has no effect on the precision of the guidance, since the cam surface is a cylindrical surface of generatrices parallel to said axis.
Dans une forme de réalisation particulière où la distance entre la surface de contre-came et le plan de travail est constante, les deux galets sont montés coaxialement autour d'un même tourillon sur lequel ils sont calés en direction axiale, et ce tourillon est assujetti à la pièce support de la molette par des moyens de fixation permettant l'ajustement de sa position par rapport audit plan suivant la direction de l'axe commun des deux galets. Plus en détail, le tourillon peut comporter une extrémité filetée qui se visse dans une cavité taraudée ménagée dans ladite pièce support suivant la direction de l'axe commun des deux galets, cette cavité étant ouverte par une fente radiale de sorte qu'elle se trouve réalisée entre deux branches de fourche élastiquement déformables, qui peuvent être mutuellement serrées ou desserrées pour bloquer entre elles le tourillon sur la pièce support ou permettre le réglage de sa position par vissage ou dévissage progressif.In a particular embodiment where the distance between the cam follower surface and the work surface is constant, the two rollers are mounted coaxially around the same journal on which they are fixed in the axial direction, and this journal is subject to the support part of the wheel by fixing means allowing the adjustment of its position relative to said plane in the direction of the common axis of the two rollers. In more detail, the pin may have a threaded end which is screwed into a threaded cavity formed in said support piece in the direction of the common axis of the two rollers, this cavity being opened by a radial slot so that it is located produced between two elastically deformable fork legs, which can be mutually tightened or loosened to block the trunnion between them on the support piece or allow its position to be adjusted by progressive screwing or unscrewing.
D'autres particularités et avantages de l'invention ressortiront de la description qui va suivre, en regard des dessins annexés, d'un exemple de réalisation non limitatif.Other features and advantages of the invention will emerge from the description which follows, with reference to the appended drawings, of a nonlimiting exemplary embodiment.
La figure 1 illustre la cinématique d'une tête de sertissage pour boîtes de forme.Figure 1 illustrates the kinematics of a crimping head for shaped boxes.
La figure 2 représente schématiquement, en coupe axiale, les principaux éléments associés à une molette dans une tête de sertissage selon l'invention.Figure 2 shows schematically, in axial section, the main elements associated with a wheel in a crimping head according to the invention.
On voit sur la figure 1 une boîte de conserve 1, formée d'un corps de boîte 1a et d'un couvercle 1b. Il s'agit d'une boîte de contour non circulaire, dite "boîte de forme". Celle-ci est posée sur un plan de travail horizontal P en un emplacement centré sur l'axe vertical X d'une tête de sertissage. Celle-ci a pour rôle d'effectuer le sertissage le long du bord du corps 1a du couvercle 1b maintenu pressé sur celui-ci par un mandrin 2 fixe (figure 2). Cette opération est réalisée à l'aide de molettes rotatives de sertissage dont l'une, portant la référence 3, est visible sur la figure 1. La molette 3, de même que les autres, est guidée de façon à se déplacer autour de la boîte 1, en tournant simultanément autour de leur axe vertical V, suivant un trajet T correspondant de façon précise au contour de la boîte. Chaque molette 3 est portée par une pièce 4 comportant un moyeu 4a pivotant autour d'un axe vertical Y, et deux bras 4b, 4c solidaires du moyeu 4a. La molette est montée à l'extrémité de l'un de ces bras, désigné par la référence 4b, auquel est lié son axe de rotation V. L'axe de pivotement Y du moyeu 4a est astreint à tourner autour de l'axe X de la tête de sertissage, en demeurant à une distance R constante de cet axe. A l'extrémité de l'autre bras 4c de la pièce support 4 est monté un galet 10 dont l'axe de rotation Z, vertical, est lié à ce bras. Le galet 10 est astreint à rouler contre une surface de came 7a dont le tracé est tel qu'il impose à la molette 3, via la pièce 4 tandis que le moyeu 4a de celle-ci effectue son mouvement de révolution autour de l'axe X, de suivre rigoureusement le contour de la boîte 1 à sertir. Ce résultat est illustré sur la figure 1, où on a indiqué deux positions D, D' de la pièce 4 et de ses accessoires, lesquels, dans la position D', sont désignés par les mêmes références que dans la position D, mais assorties du signe ['].We see in Figure 1 a can 1, formed of a
Ainsi est réalisée l'opération de sertissage du couvercle 1b sur le corps de boîte 1a, tout au long du périmètre de la boîte.Thus is carried out the crimping operation of the
Il importe que cette opération puisse être effectuée avec une extrême précision dans le guidage de chaque molette de sertissage et cela à grande vitesse de façon à permettre une cadence de sertissage élevée.It is important that this operation can be carried out with extreme precision in guiding each crimping wheel and this at high speed so as to allow a high crimping rate.
Ces résultats sont obtenus grâce à l'adoption de dispositions spéciales relatives au galet de guidage 10, qui apparaissent sur la figure 2.These results are obtained thanks to the adoption of special provisions relating to the
Cette figure montre que le moyeu 4a est monté entre les branches 5a, 5b d'une pièce 5 comportant par ailleurs un manchon rotatif 5c centré sur l'axe X, qui peut tourner autour de cet axe mais non pas se déplacer le long de celui-ci. De ce fait, le moyeu 4a peut tourner autour de l'axe X, son propre axe Y restant à distance constante R de celui-ci, en conservant un espacement constant avec le plan P, c'est-à-dire en décrivant un cercle d'axe X parallèle au plan P et distant de celui-ci d'une quantité déterminée fixe. Il en résulte que la molette 3 est astreinte à se déplacer en restant à une hauteur constante au-dessus du plan P. Il en va de même de la tête 4d du bras 4c, située à l'extrémité de celui-ci éloignée du moyeu 4a, laquelle se déplace en restant dans un plan moyen Q parallèle au plan P et situé à une distance H déterminée fixe de ce plan.This figure shows that the
La tête 4d du bras 4c est équipée d'un ensemble de guidage 6 incluant le galet 10 précité, qui astreint celui-ci à suivre, lorsque le moyeu 4a tourne autour de l'axe X, la surface de came 7a, réalisée dans un plateau fixe 8 dit "came de reproduction", situé à une distance J déterminée au-dessus du plan Q. Cette surface est une surface cylindrique dont les génératrices verticales s'appuient sur une ligne telle que l'axe Z du galet 10 suive un tracé G conçu pour que l'axe V de molette 3 se déplace en conséquence suivant un trajet T "reproduisant", compte tenu du rayon de la molette, le contour de la boîte 1.The head 4d of the arm 4c is equipped with a
L'ensemble de guidage 6 comprend un tourillon 9 fixé à la tête 4d et offrant une forme générale de révolution autour d'un axe vertical Z; ce tourillon porte, outre le galet 10, un second galet 11 rotatif; ces deux galets sont montés l'un au-dessus de l'autre de façon à pouvoir tourner autour d'un même axe coïncidant avec l'axe Z précité. Le galet inférieur 10, de diamètre légèrement plus grand que le galet supérieur 11, présente une surface extérieure cylindrique de révolution d'axe Z et roule contre la surface de came 7a. Le galet supérieur 11 présente pour sa part une surface extérieure de révolution non pas cylindrique, mais bombée, sa section par un plan radial, passant par l'axe Z, étant constituée par un arc légèrement convexe vers l'extérieur. Ce galet coopère avec une surface de contre-came 7b, réalisée dans le plateau 8 en regard de la surface de came 7a. La surface 7b s'étend, comme la surface 7a, suivant un tracé parallèle à la ligne G le long de laquelle doit se déplacer l'axe Z. Il s'agit également d'une surface réglée, dont toutefois les génératrices, au lieu d'être parallèles aux axes Z et X, font avec eux un petit angle F de quelques degrés. Ainsi, la distance entre les surfaces de came 7a et de contre-came 7b, qui forment les flancs d'une gorge 7 creusée dans le plateau 8, va en diminuant à mesure que l'on s'éloigne de la tête 4d de la pièce 4. Quant au galet 11, il est adjacent au fond 7c de cette gorge.The
Comme le montre la figure 2, la surface de contre-came 7b ne se poursuit pas, en direction de la tête 4d, au delà du galet 11, afin de ne pas interférer avec le galet 10, de diamètre supérieur, interposé entre celui-ci et ladite tête.As shown in FIG. 2, the
Le tourillon 9 est fixé à la tête 4d par une partie filetée 9a d'axe Z qu'elle comporte, qui est vissée dans un passage fileté conjugué que comporte la tête 4d. Par vissage ou dévissage progressif du tourillon 9 dans la tête 4d, il est possible de le faire se déplacer par rapport à celle-ci dans la direction de l'axe Z. Un tel mouvement de translation se communique intégralement aux galets 10, 11 calés axialement sur le tourillon 9. Tandis que le galet cylindrique 10 coulisse alors le long d'une génératrice de la surface de came 7a sans causer aucune variation de la distance des axes Z et X, le galet bombé 11 coulisse le long d'une génératrice de la surface de contre-came 7b inclinée de l'angle F par rapport à l'axe X; il s'ensuit que, lorsqu'on fait augmenter, par réglage de la position de la pièce 9 sur l'axe Z, la distance K du galet 11 au plan fixe Q où se déplace la tête 4d, le jeu qui existait entre les surfaces 7a, 7b et les galets 10, 11 de l'ensemble de guidage 6 va en diminuant jusqu'au moment où il s'annule, les deux galets 10, 11 prenant alors simultanément appui chacun contre la surface 7a, 7b avec laquelle il coopère, le galet 10 étant en contact linéaire avec la surface 7a et le galet 11 en contact ponctuel avec la surface 7b. Lorsque ce réglage est atteint, le tourillon 9 est bloqué dans la tête 4d par serrage de sa partie filetée dans le passage fileté de la tête 4d, celle-ci étant à cet effet ouverte par une fente 13; une vis est engagée dans des trous 12 percés dans les deux branches correspondantes, séparées par cette fente, pour serrer élastiquement celles-ci contre la partie filetée 9a du tourillon 9 et bloquer ce dernier par pincement.The
Le réglage par rotation mesurée du tourillon 9 est facilité par le fait que celui-ci est doté d'une collerette 9b offrant à sa périphérie des cavités 14 qui donnent prise à un outil approprié d'entraînement en rotation.The adjustment by measured rotation of the
On remarquera que, après comme avant un réglage de la position axiale du tourillon 9, la distance séparant les axes Z et X demeure inchangée, étant uniquement déterminée par le galet 10, de surface extérieure cylindrique, en appui contre la surface de came 7a, également cylindrique, les génératrices de ces deux surfaces s'étendant parallèlement aux axes précités. Autrement dit, le plus ou moins grand enfoncement du tourillon 9 et des galets 10, 11 dans la gorge 7 ne modifie pas les paramètres de guidage de la molette 3. Par conséquent, le positionnement de la molette 3, via la pièce support 4, reste indépendant des réglages de rattrapage de jeu de l'ensemble de guidage 6, de sorte qu'il y a conservation automatique de la précision du guidage de la molette 3 (de l'ordre du 1/100e mm pour une molette de première passe qui effectue un roulé de sertissage périphérique écrasé ensuite par une molette de deuxième passe).It will be noted that, after as before adjusting the axial position of the
Claims (7)
- Crimping head for sealing food cans (1) by crimping a lid (1b) on a can body (1a), the head comprising at least one crimping roller (3) mounted on a moving support piece (4) that causes the head to move in a plane parallel to a work plane (P) on which the can (1) to be crimped stands, so as to follow a path such that it follows exactly the outline of the can while remaining pressed thereagainst so as to crimp the edge of the lid (1b) onto the edge of the can body (1a), guide means associated with said support piece (4) constraining said roller (3) to follow said path, which guide means comprise, on the one hand, a first rotary wheel (10) whose axis is perpendicular to said work plane and which is linked to said support piece, and a cylindrical cam surface (7a) whose generator lines are likewise perpendicular to the work plane and follow an appropriate outline that extends parallel to the work plane, the first wheel (10) running against the cam surface (7a) under the action of a second rotary wheel (11) juxtaposed with said first wheel (10) and rotating about the same axis and situated facing the above-mentioned cam surface, a counter-cam surface (7b) constituting a bearing and running surface for said second wheel (11) and extending parallel to the cam surface (7a),
characterized in that said second wheel (11) has a bulging peripheral surface whose section in a radial plane is a curved line with its convex side on the outside, and the counter-cam surface (7b) is inclined at a small angle relative to the direction of the common axis (Z) of the two wheels (10, 11), and in that the relative position along the direction of said axis between the second wheel (11) and the counter-cam surface (7b) is adjustable so as to make it possible to adjust the slack between the assembly of the two wheels and the cam and counter-cam surfaces between which said assembly is interposed. - Crimping head according to claim 1, characterized by the fact that the second wheel (11) is smaller in diameter than the first wheel (10) and that the cam surface (7a) extends transversely over a distance covering the combined thickness of the two superposed wheels (10, 11), whereas the counter-cam surface (7b) extends transversely over a shorter distance, so as to face the second wheel (11) only.
- Crimping head according to claim 1, characterized by the fact that the cam surface and the counter-cam surface are constituted by the flanks (7a, 7b) of a groove (7) formed in a plate (8) around a suitable path, and of constant cross-section, the second wheel (11) being adjacent to the bottom surface (7c) of said groove.
- Crimping head according to any one of claims 1 to 3, characterized by the fact that the distance between the surface of the counter-cam (7b) and the work plane (P) is constant, and that the slack is adjusted by displacing at least the second wheel (11) along its axis (Z) relative to said plane.
- Crimping head according to any one of claims 1 to 4, characterized by the fact that the mutual separation between the two wheels (10, 11) along the direction of their common axis (Z) is constant.
- Crimping head according to claim 5, characterized by the fact that the distance between the counter-cam surface (7b) and the work plane (P) is constant, that the two wheels (10, 11) are mounted coaxially on a common stub axle (9) on which they are secured in the axial direction, and that said stub axle is secured to the support piece (4) carrying the roller (3) by fixing means that enable its position to be adjusted relative to said plane along the direction of the axis common (Z) to the two wheels.
- Crimping head according to claim 6, characterized by the fact that the stub axle (9) includes a threaded end (9a) that screws into a tapped cavity formed in said support piece (4) along the direction of the axis (Z) common to the two wheels (10, 11), said cavity being opened by a radial slot (13) such that it is formed between two branches of an elastically deformable fork, which branches can be tightened or loosened relative to each other so as to lock the stub axle (9) to the support piece (4) or so as to allow its position to be adjusted by progressive screwing or unscrewing.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9207594A FR2692548B1 (en) | 1992-06-22 | 1992-06-22 | Crimping head for a can, provided with clearance adjustment means. |
FR9207594 | 1992-06-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0576332A1 EP0576332A1 (en) | 1993-12-29 |
EP0576332B1 true EP0576332B1 (en) | 1996-04-17 |
Family
ID=9431021
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93401560A Expired - Lifetime EP0576332B1 (en) | 1992-06-22 | 1993-06-17 | Crimp head for food tins comprising tolerance regulating means |
Country Status (5)
Country | Link |
---|---|
US (1) | US5390471A (en) |
EP (1) | EP0576332B1 (en) |
DE (1) | DE69302227T2 (en) |
ES (1) | ES2086902T3 (en) |
FR (1) | FR2692548B1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6163951A (en) * | 1999-03-31 | 2000-12-26 | Sealright Co., Inc. | Method and apparatus for lifting tabs of a laminate from a substrate |
GB9912264D0 (en) * | 1999-05-27 | 1999-07-28 | Meltog Ltd | Adjustment mechanism |
US8789721B2 (en) * | 2005-05-17 | 2014-07-29 | Toyo Seikan Kaisha, Ltd. | Square can and method and apparatus for double seaming the same |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1972866A (en) * | 1931-07-06 | 1934-09-11 | American Can Co | Double seaming head |
US2149543A (en) * | 1936-12-24 | 1939-03-07 | Peyser Hansen Machine Co Inc | Seaming mechanism |
US2271152A (en) * | 1938-05-28 | 1942-01-27 | Continental Can Co | Square can seaming head |
US2432815A (en) * | 1943-06-28 | 1947-12-16 | Continental Can Co | Square can seaming head |
US2467154A (en) * | 1946-07-26 | 1949-04-12 | Pacific Can Company | Noncircular can seaming head |
US2907293A (en) * | 1956-10-09 | 1959-10-06 | Angelus Sanitary Can Machine C | Seaming head for non-circular cans |
GB827823A (en) * | 1958-05-30 | 1960-02-10 | Metal Box Co Ltd | Improvements in or relating to seaming mechanisms for securing ends on can bodies |
-
1992
- 1992-06-22 FR FR9207594A patent/FR2692548B1/en not_active Expired - Fee Related
-
1993
- 1993-06-17 US US08/079,157 patent/US5390471A/en not_active Expired - Fee Related
- 1993-06-17 ES ES93401560T patent/ES2086902T3/en not_active Expired - Lifetime
- 1993-06-17 EP EP93401560A patent/EP0576332B1/en not_active Expired - Lifetime
- 1993-06-17 DE DE69302227T patent/DE69302227T2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0576332A1 (en) | 1993-12-29 |
FR2692548A1 (en) | 1993-12-24 |
FR2692548B1 (en) | 1994-10-07 |
US5390471A (en) | 1995-02-21 |
DE69302227D1 (en) | 1996-05-23 |
DE69302227T2 (en) | 1996-09-12 |
ES2086902T3 (en) | 1996-07-01 |
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