FR2646802A1 - Locking device for a mould, of the jackknife type, and moulds incorporating such a device - Google Patents
Locking device for a mould, of the jackknife type, and moulds incorporating such a device Download PDFInfo
- Publication number
- FR2646802A1 FR2646802A1 FR8906195A FR8906195A FR2646802A1 FR 2646802 A1 FR2646802 A1 FR 2646802A1 FR 8906195 A FR8906195 A FR 8906195A FR 8906195 A FR8906195 A FR 8906195A FR 2646802 A1 FR2646802 A1 FR 2646802A1
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- Prior art keywords
- mold
- locking device
- finger
- opening
- lock
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/56—Opening, closing or clamping means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/56—Opening, closing or clamping means
- B29C2049/566—Locking means
- B29C2049/5661—Mechanical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/56—Opening, closing or clamping means
- B29C2049/566—Locking means
- B29C2049/5661—Mechanical
- B29C2049/5664—Translating locking pin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/20—Opening, closing or clamping
- B29C33/26—Opening, closing or clamping by pivotal movement
Abstract
Description
"Dispositif de verrouillage pour moule de type portefeuilles et moules incorporant un tel dispositif11
La présente invention concerne des perfectionnements apportés aux dispositifs de verrouillage pour moule de soufflage ou d'étirage-soufflage du type porte-feuilles utilisables notamment pour la fabrication de récipients en matière plastique tels que bouteilles, flacons ou analogues à partir de préformes, ce dispositif comportant deux demiverrous respectivement de type mâle et de type femelle associés respectivement aux deux demi-moules et aptes à coopérer mutuellement pour maintenir le moule en position de fermeture et pour verrouiller cette fermeture ;; l'invention concerne aussi des perfectionnements apportés aux moules de soufflage ou d'étirage-soufflage du type portefeuilles utilisables notamment pour la fabrication de récipients en matière plastique tels que bouteilles, flacons ou analogues à partir de préformes, incorporant de tels dispositifs de verrouillage."Locking device for wallet-type mold and molds incorporating such a device11
The present invention relates to improvements made to the locking devices for blow molding or stretch-blow molding of the wallet-holder type usable in particular for the manufacture of plastic containers such as bottles, flasks or the like from preforms, this device comprising two half-locks respectively of the male and female type respectively associated with the two half-molds and able to cooperate with each other to maintain the mold in the closed position and to lock this closure; the invention also relates to improvements made to blow molds or stretch blow molds of the wallet type usable in particular for the manufacture of plastic containers such as bottles, flasks or the like from preforms, incorporating such locking devices.
La fabrication de récipients en matière plastique tels que bouteilles, flacons, etc. peut être effectuée à partir de préformes ou ébauches qui sont chauffées jusqu'a une température prédéterminée caractéristique d.u matériau constitutif, puis soufflées ou étirées et soufflées dans un moule. The manufacture of plastic containers such as bottles, flasks, etc. can be made from preforms or blanks which are heated to a predetermined temperature characteristic of the constituent material, then blown or drawn and blown in a mold.
Lors du soufflage des préformes,. la pression du fluide de soufflage (en général de l'air) peut atteindre 40 bars. Il en résulte que les efforts exercés sur les parois de la cavité de soufflage sont élevés et. tendent a écarter l'un de l'autre les deux demi-moules constituant le moule de soufflage. Pour éviter cette séparation, il faut donc un dispositif de verrouillage fiable qui maintienne le moule en position de fermeture tout en étant susceptible d'être actionné de façon simple. When blowing the preforms ,. the pressure of the blowing fluid (generally air) can reach 40 bars. As a result, the forces exerted on the walls of the blowing cavity are high and. tend to separate from one another the two half-molds constituting the blow mold. To avoid this separation, a reliable locking device is therefore required which keeps the mold in the closed position while being capable of being actuated in a simple manner.
En outre, il faut que ce dispositif soit
- simple et facile à réaliser avec des coûts d'usinage réduits,
- facile d'entretien,
- susceptible d'être commandé par un organe extérieur aux moules pour ne pas augmenter le poids de ceux-ci; en effet dans certaines installations à grand débit, les moules sont disposés sur un plateau tournant et tout gain de poids est bénéfique quant a la puissance consommée, au dimensionnement des axes des pièces-en rotation, etc.,
- capable de rester en position fermée sans avoir recours à un organe extérieur maintenu actif pendant toute la durée de la fermeture.In addition, this device must be
- simple and easy to carry out with reduced machining costs,
- easy to maintain,
- Can be controlled by an organ external to the molds so as not to increase the weight of the latter; in fact, in certain high-speed installations, the molds are arranged on a turntable and any weight saving is beneficial as regards the power consumed, the dimensioning of the axes of the rotating parts, etc.,
- capable of remaining in the closed position without having to resort to an external organ kept active for the entire duration of the closure.
L'invention a essentiellement pour but de proposer un dispositif de verrouillage qui regroupe tous ces avantages et qui de surcroît permette de conduire à des structures de moule originales et intéressantes quant à l'exploitation. The object of the invention is essentially to propose a locking device which combines all these advantages and which moreover makes it possible to lead to original mold structures which are advantageous in terms of operation.
A ces fins, un dispositif de verrouillage conforme à l'invention se caractérise essentiellement en ce qu'il comprend
- deux demi-verrous comportant chacun au moins une branche saillante dirigée en direction de l'autre demiverrou, les deux branches appartenant aux deux demi-verrous étant mutuellement décalées en hauteur et étant aptes à être situées l'une au-dessus de l'autre en position de fermeture du moule
- une ouverture d'axe approximativement parallèle au bord du demi-moule correspondant, percée dans la branche du demi-verrou de type femelle ;;
- un doigt d'accouplement d'axe approximativement parallèle au bord du demi-moule correspondant, supporté à coulissement axial par la branche du demi-verrou de type mâle
- des moyens d'entrainement accouplés au susdit doigt pour déplacer celui-ci entre deux positions fonctionnelles, à savoir une position de fermeture pour laquelle le doigt est engagé dans l'ouverture en regard et assure la fermeture du moule et une position d'ouverture pour laquelle le doigt est dégagé de l'ouverture et autorise l'ouverture du moule
- et des moyens de commande pour agir sur les moyens d'entraînement et provoquer l'ouverture ou la fermeture du verrou
- les deux demi-verrous s'étendant sur approximativement toute la hauteur du moule et étant agencés pour assurer une fonction de fermeture du moule sur sensiblement toute la hauteur de celui-ci.For these purposes, a locking device according to the invention is essentially characterized in that it comprises
- two half-locks each comprising at least one projecting branch directed towards the other half-lock, the two branches belonging to the two half-locks being mutually offset in height and being able to be located one above the other in closed mold position
- An axis opening approximately parallel to the edge of the corresponding half-mold, pierced in the branch of the female type half-bolt;
- a coupling finger with an axis approximately parallel to the edge of the corresponding half-mold, supported axially by the branch of the male half-latch
- drive means coupled to the aforesaid finger to move the latter between two functional positions, namely a closed position for which the finger is engaged in the opening opposite and ensures the closure of the mold and an open position for which the finger is released from the opening and authorizes the opening of the mold
- And control means to act on the drive means and cause the opening or closing of the lock
- The two half-locks extending over approximately the entire height of the mold and being arranged to perform a function of closing the mold over substantially the entire height of the latter.
Pour une réalisation préférée, les demi-verrous comprennent respectivement plusieurs branches s'imbriquant les unes entre les autres en position de fermeture du moule et réparties sensiblement sur toute la hauteur du moule, ces branches coopérant par paires constituées chacune par une branche munie d'une ouverture et d'une branche munie d'un doigt coulissant, les moyens d'entraînement étant accouplés à l'ensemble des doigts pour assurer leur entrainement simultané. For a preferred embodiment, the half-latches respectively comprise several branches which overlap each other in the closed position of the mold and distributed substantially over the entire height of the mold, these branches cooperating in pairs each consisting of a branch provided with an opening and a branch provided with a sliding finger, the drive means being coupled to all of the fingers to ensure their simultaneous training.
De façon tout-à-fait avantageuse, les moyens d'entrainement comprennent un arbre d'entraînement supporté à coulissement axial par le demi-verrou de type mâle et s'étendant sensiblement parallèlement au bord du demi-moule correspondant, cet arbre pouvant coulisser entre deux positions extrêmes correspondant aux deux susdites positions fonctionnelles. Dans ce cas, chaque doigt peut être fixé de façon rigide en porte-à-faux sur l'arbre d'entraînement, par exemple en étant monté sur un bras transversal lui-même solidarisé fixement à l'arbre d'entraînement. In an entirely advantageous manner, the drive means comprise a drive shaft supported in axial sliding by the half-lock of the male type and extending substantially parallel to the edge of the corresponding half-mold, this shaft being able to slide between two extreme positions corresponding to the above two functional positions. In this case, each finger can be rigidly fixed in overhang on the drive shaft, for example by being mounted on a transverse arm itself fixedly secured to the drive shaft.
Pour un fonctionnement plus fiable, il est possible de matérialiser les deux positions fonctionnelles d'ouverture et de fermeture en ayant recours à des moyens élastiquement effaçables de confirmation. Ces moyens peuvent en particulier être associés aux moyens d'entraînement et, dans le cas du mode de réalisation précité de ces derniers, on peut prévoir deux encoches creusées sur l'arbre d'entraînement à distance axialé l'une de l'autre et un pion saillant élastiquement effaçable disposé en regard del'arbre d'entraînement de manière telle que ce pion soit engagé dans l'une ou l'autre des encoches précitées lorsque l'arbre d'entraînement est dans l'une ou l'autre de ses positions extrêmes.Toutefois, pour éviter tout problème, par exemple en cas de défaillance des moyens de confirmation, il est en outre souhaitable d'adjoindre à l'arbre d'entraînement des butées d'extrémité aptes à limiter mécaniquement son déplacement axial. For a more reliable operation, it is possible to materialize the two functional positions of opening and closing by having recourse to elastically erasable means of confirmation. These means can in particular be associated with the drive means and, in the case of the aforementioned embodiment of the latter, it is possible to provide two notches hollowed out on the drive shaft at an axial distance from each other and an elastically erasable protruding pin arranged opposite the drive shaft in such a way that this peg is engaged in one or the other of the aforesaid notches when the drive shaft is in one or the other of its extreme positions. However, to avoid any problem, for example in the event of failure of the confirmation means, it is also desirable to add end stops capable of mechanically limiting its axial movement to the drive shaft.
Avantageusement, les moyens de commande comprennent un doigt de commande solidaire des moyens d'entrainement apte a coopérer avec une came à profil variable lorsque le doigt et la came sont présentés l'un contre l'autre et sont déplacés l'un par rapport à l'autre. Cette disposition est particulièrement intéressante dans le cas d'installations automatisées incorporant des moules montés sur un support mobile (plateau tournant par exemple) car la came peut alors être disposée à l'extérieur, sur une partie fixe de l'installation, en un emplacement approprié pour commander la fermeture et l'ouverture des moules au fur et à mesure de leur déplacement, selon un cycle de commande préétabli. Advantageously, the control means comprise a control finger integral with the drive means able to cooperate with a variable profile cam when the finger and the cam are presented one against the other and are moved relative to each other. the other. This arrangement is particularly advantageous in the case of automated installations incorporating molds mounted on a mobile support (for example a turntable) since the cam can then be placed outside, on a fixed part of the installation, in a location suitable for controlling the closing and opening of the molds as they move, according to a pre-established order cycle.
Dans un premier mode de réalisation, chaque demiverrou comprend un corps solidaire du demi-moule correspondant et supportant la ou les branches correspondantes précitées ; dans ce cas, il est possible de faire en sorte que le corps de chaque demi-verrou ait une forme générale en équerre et soit monté sur un angle du demi-moule correspondant et que, en position de fermeture, les deux demiverrous réunis constituent une pièce en U enserrant le moule par ses deux faces latérales : de la sorte, les efforts qui s'exercent au sein du moule, en cours de fonctionnement, et qui tendentoà ecarter l'un de l'autre les deux demi-moules, sont repris par les parties des corps respectifs des demi-moules en appui sur les faces latérales; et la pièce en U formée par l'ensemble du verrou contribue efficacement à maintenir les deux demi-moules accolés l'un contre l'autre. On peut du reste noter ici que la charnière d'articulation en rotation des demi-moules (et située a l'opposé du verrou) peut être, elle aussi, constituée de la même manière, de telle sorte que les deux demi-moules soient maintenus par deux pièces en U qui assurent la rigidité de l'ensemble en position de fermeture. In a first embodiment, each half-lock comprises a body integral with the corresponding half-mold and supporting the aforementioned corresponding branch or branches; in this case, it is possible to ensure that the body of each half-lock has a generally square shape and is mounted on an angle of the corresponding half-mold and that, in the closed position, the two half-locks joined together constitute a U-shaped part enclosing the mold by its two lateral faces: in this way, the forces exerted within the mold, during operation, and which tend to separate the two half-molds from one another, are taken up by the parts of the respective bodies of the half-molds bearing on the lateral faces; and the U-shaped part formed by the bolt assembly effectively contributes to keeping the two half-molds joined against each other. It may furthermore be noted here that the hinge in rotation articulation of the half-molds (and situated opposite the lock) can also be constituted in the same way, so that the two half-molds are held by two U-shaped parts which ensure the rigidity of the assembly in the closed position.
On obtient ainsi une structure de moule de soufflage ou d'étirage-soufflage du type porte-feuilles particulièrement résistante, qui subit pas ou peu de déformation, qui est par conséquent particulièrement efficace et fiable, et qui voit sa durée de vie accrue. A particularly resistant blowing or stretch-blowing mold structure of the wallet type is thus obtained, which undergoes little or no deformation, which is therefore particularly effective and reliable, and which sees its lifespan increased.
Dans un second mode de réalisation, les deux demiverrous sont chacun en forme de demi-coquille et sont articulés à rotation l'un à l'autre de manière à former une armature délimitant un logement intérieur apte à recevoir une structure de moule amovible. Il est alors possible de réaliser une structure particulièrement intéressante de moule d'étirage ou d'étirage-soufflage du type portefeuilles, qui comprend
- une structure externe formant armature constituée des deux demi-coquilles articulées l'une à l'autre et s'ouvrant l'une par rapport à l'autre, ces deux demi-coquilles intégrant un dispositif de verrouillage correspondant au second mode de réalisation mentionné,
- et une structure de moule supportée de façon amo.vible au sein de la susdite structure externe formant armature.In a second embodiment, the two half-locks are each in the form of a half-shell and are articulated in rotation with one another so as to form a frame delimiting an interior housing capable of receiving a removable mold structure. It is then possible to produce a particularly advantageous stretching or stretch-blow molding structure of the wallet type, which comprises
an external structure forming an armature consisting of two half-shells hinged to one another and opening relative to each other, these two half-shells incorporating a locking device corresponding to the second embodiment mentionned,
- And a mold structure supported in a visible manner within the above-mentioned external structure forming an armature.
Dans un tel agencement, les deux demi-coquilles intègrent les organes de verrouillage et les organes d'articulation en rotation et elles forment, après fermeture, une structure monobloc particulièrement résistante, apte à reprendre les efforts de dilatation s'exerçant sur les demi-moules enfermés dans la cavité centrale. Ces demimoules n'ont donc plus à être structurés pour présenter une résistance mécanique propre et ils peuvent ainsi être réalisés en un matériau tel que l'aluminium, plus léger, plus facile à usiner ; ils sont donc moins coûteux que des moules traditionnels en acier ; en outre un autre avantage primordial réside dans leur amovibilité qui permet leur échange facile : l'installation possède alors une très grande souplesse d'adaptation, rapide et aisée, à des fabrications d'objets de forme diverses. In such an arrangement, the two half-shells integrate the locking members and the articulation members in rotation and they form, after closing, a particularly resistant monobloc structure, able to take up the expansion forces exerted on the half-shells. mussels enclosed in the central cavity. These half-molds no longer have to be structured to present their own mechanical resistance and they can thus be made of a material such as aluminum, lighter, easier to machine; they are therefore less expensive than traditional steel molds; in addition, another primordial advantage lies in their removable nature which allows them to be easily exchanged: the installation then has a great flexibility of adaptation, quick and easy, to the manufacture of objects of various shapes.
L'invention sera mieux comprise à la lecture de la description qui suit de certains modes de réalisation préférés donnés à titre d'exemples non limitatifs. Dans cette description on se réfère aux dessins annexés sur lesquels
- la figure 1 est une vue de face en coupe d'un premier mode de réalisation préféré d'un dispositif deverrouillage conforme à l'invention montré en position de fermeture
- la figure 2 est une vue de dessus du dispositif de la figure 1
- la figure 3 est une vue de face en coupe d'un autre mode de réalisation préféré d'un dispositif de verrouillage conforme à l'invention montré en position de fermeture ; et
- la figure 4 est une vue de dessus du mode de réalisation de la figure 3 représenté dans deux positions fonctionnelles différentes.The invention will be better understood on reading the following description of certain preferred embodiments given by way of nonlimiting examples. In this description, reference is made to the appended drawings in which
- Figure 1 is a front sectional view of a first preferred embodiment of an unlocking device according to the invention shown in the closed position
- Figure 2 is a top view of the device of Figure 1
- Figure 3 is a sectional front view of another preferred embodiment of a locking device according to the invention shown in the closed position; and
- Figure 4 is a top view of the embodiment of Figure 3 shown in two different functional positions.
En se reportant tout d'abord aux figures 1 et 2 montrant un premier mode de réalisation conforme à l'invention, le dispositif de verrouillage comprend essentielle- ment deux demi-verrous, un demi-verrou mâle 1 et un demiverrou femelle 2, fixés par tous moyens appropriés (par exemple par boulonnage) respectivement sur les' deux demimoules 3. Referring first to Figures 1 and 2 showing a first embodiment according to the invention, the locking device essentially comprises two half-locks, a male half-lock 1 and a female half-lock 2, fixed by any appropriate means (for example by bolting) respectively on the 'two half-molds 3.
Le demi-moule femelle 2 comprend un corps 4 s'étendant sensiblement parallèlement au bord 5 du demi-moule correspondant ; ce corps présente deux branches saillantes 6 dirigées en direction de l'autre demi-verrou. Chaque branche 6 porte une ouverture 7 d'axe approximativement parallèle au bord 5 du demi-moule. Les ouvertures 7 sont de préférence coaxiales et de même diamètre. The female half-mold 2 comprises a body 4 extending substantially parallel to the edge 5 of the corresponding half-mold; this body has two projecting branches 6 directed towards the other half-latch. Each branch 6 carries an opening 7 with an axis approximately parallel to the edge 5 of the half-mold. The openings 7 are preferably coaxial and of the same diameter.
Le demi-verrou mâle 1 comprend un corps 8 s'éten- dant sensiblement parallèlement au bord 5 du demi-moule correspondant 3 ; ce corps présente deux branches saillantes 9 dirigées en direction de l'autre demi-verrou. Les deux corps 4 et 8 sont mutuellement positionnés de manière telle que leurs branches respectives 6 et 9 soient décalées verticalement les unes par rapport aux autres (les branches 9 venant par exemple sous les branches 6). Au voisinage du corps 8, les branches 9 sont munies respectivement de premiers alésages 10 d'axes sensiblement parallèles au bord 5, de préférence coaxiaux et de même diamètre, -recevant à libre coulissement un arbre d'entraînement 11. Sur cet arbre 11 sont rapportés deux bras transversaux 12 (par exemple vissés ou bloqués par boulonnage) s'étendant parallèlement aux branches 9 et sous celles-ci.A leurs extrémités libres, les bras 12 portent des doigts respectifs 13 tournés Vers le haut, sensiblement parallèles au bord 5 précité, et guidés à libre coulissement dans deux ouvertures 14 prévues aux extrémités respectives des branches 9. The male half-lock 1 comprises a body 8 extending substantially parallel to the edge 5 of the corresponding half-mold 3; this body has two projecting branches 9 directed towards the other half-latch. The two bodies 4 and 8 are mutually positioned so that their respective branches 6 and 9 are offset vertically with respect to each other (the branches 9 coming for example under the branches 6). In the vicinity of the body 8, the branches 9 are respectively provided with first bores 10 with axes substantially parallel to the edge 5, preferably coaxial and of the same diameter, -receiving free sliding a drive shaft 11. On this shaft 11 are added two transverse arms 12 (for example screwed or blocked by bolting) extending parallel to the branches 9 and under them. At their free ends, the arms 12 carry respective fingers 13 turned upwards, substantially parallel to the edge 5 mentioned above, and guided in free sliding in two openings 14 provided at the respective ends of the branches 9.
De préférence les ouvertures 14 sont coaxiales et de même diamètre et, en position de fermeture, elles sont également coaxiales aux ouvertures 7 précitées.Preferably the openings 14 are coaxial and of the same diameter and, in the closed position, they are also coaxial with the above-mentioned openings 7.
En position d'ouverture du. verrou, l'arbre d'entraînement ll coulisse vers le bas (sa course étant éventuellement limitée par une butée 15 fixée à son extrémité supérieure) et les doigts 13, entraînés vers le bas, sor- tent des ouvertures 7 du demi-verrou femelle 2 (position représentée en trait mixte sur la figure 1): les deux demi-verrous n'étant plus solidaires, le moule peut être ouvert. In the open position of the. latch, the drive shaft ll slides downwards (its stroke possibly being limited by a stopper 15 fixed at its upper end) and the fingers 13, driven downwards, come out of the openings 7 of the female half-latch 2 (position shown in phantom in Figure 1): the two half-locks no longer being integral, the mold can be opened.
Pour la fermeture, l'arbre d'entraînement est déplacé vers le haut (le bras inférieur 12 formant butée si nécessaire) de manière que les doigts 13 soient engagés dans les ouvertures 7, comme représenté en trait plein a la figure 1. For closing, the drive shaft is moved upwards (the lower arm 12 forming a stop if necessary) so that the fingers 13 are engaged in the openings 7, as shown in solid lines in FIG. 1.
La commande du déplacement de l'arbre d'entraine- ment 11 peut être effectuée par un système à came ; à cet effet, le bras inférieur 12 supporte un galet fou 15a (seul son axe est montré sur la figure 1) apte à coopérer avec une came (non montrée) extérieure, solidaire d'une infrastructure fixe devant laquelle le moule est amené à se déplacer. The movement of the drive shaft 11 can be controlled by a cam system; for this purpose, the lower arm 12 supports an idler roller 15a (only its axis is shown in FIG. 1) able to cooperate with an external cam (not shown), secured to a fixed infrastructure in front of which the mold is brought to move.
Les positions haute et basse de l'arbre d'entraîne- ment ll (respectivement fermeture et ouverture du verrou) peuvent être confirmées mécaniquement en prévoyant deux encoche 16, distantes axialement l'une de l'autre, creusées dans l'arbre 11, et un pion élastique 17 supporté par le corps 8 apte à s'enclencher élastiquement dans l'une ou l'autre de ces encoches. The high and low positions of the drive shaft ll (closing and opening of the latch respectively) can be confirmed mechanically by providing two notches 16, axially distant from each other, hollowed out in the shaft 11, and an elastic pin 17 supported by the body 8 capable of engaging elastically in one or the other of these notches.
Enfin, on pourra noter (voir notamment figure 2) que chaque corps 4, 8 des demi-verrous est conformé appro-ximativement en équerre ou en L, avec une partie 18 en retour sur la face latérale (ou sur un décrochement de cette face latérale) 19 du demi-moule correspondant. Chaque corps 4, 8 est fixé par des boulons, sur la face avant (boulons 20). Comme on le voit mieux sur la figure 2, une fois en position de fermeture, le dispositif de verrouillage présente la forme générale d'un U enserrant les faces latérales du moule et les efforts s'exerçant au sein du moule sont repris par les ailes en retour 18 du dispositif de verrouillage, et non pas supportés uniquement par les boulons de fixation 20. On obtient ainsi une plus grande rigidité de l'ensemble, d'où de meilleures conditions de. Finally, it will be noted (see in particular FIG. 2) that each body 4, 8 of the half-latches is shaped approximately-square or in L, with a part 18 in return on the lateral face (or on a recess of this face side) 19 of the corresponding half-mold. Each body 4, 8 is fixed by bolts, on the front face (bolts 20). As best seen in Figure 2, once in the closed position, the locking device has the general shape of a U enclosing the lateral faces of the mold and the forces exerted within the mold are taken up by the wings in return 18 of the locking device, and not supported only by the fixing bolts 20. This gives greater rigidity of the assembly, hence better conditions.
fonctionnement du moule et une durée de vie accrue de celui-ci. functioning of the mold and an increased lifetime thereof.
Une structure identique en U peut être prévue pour la charnière d'articulation en rotation des deux demimoules, située à l'opposé du dispositif de verrouillage (et non montrée sur les figures 1 et 2), de telle sorte que les deux demi-moules soie#nt enserrés sur leurs deux faces extrêmes. An identical U-shaped structure can be provided for the hinge in rotation articulation of the two half-molds, located opposite the locking device (and not shown in FIGS. 1 and 2), so that the two half-molds silk # nt enclosed on their two extreme faces.
L'agencement conforme à l'invention permet d'assu- rer un verrouillage réparti sur toute la hauteur du moule; de manière que les bords 5 face à face des demi-moules ne puissent en aucune manière s'écarter l'un de l'autre (baillement) sous l'action de la pression interne. A cet effet le nombre des doigts peut être multiplié de façon appropriée : la figure 3 montre une variante à quatre doigts (sur cette figure les organes identiques aux organes correspondants des figures 1 et 2 sont désignés par les mêmes références numériques > . The arrangement according to the invention makes it possible to ensure a locking distributed over the entire height of the mold; so that the edges 5 facing the half-molds cannot in any way move away from one another (yawning) under the action of internal pressure. For this purpose the number of fingers can be multiplied in an appropriate manner: FIG. 3 shows a variant with four fingers (in this figure, the organs identical to the corresponding organs of FIGS. 1 and 2 are designated by the same reference numerals>.
Toutefois, l'agencement représenté aux figures 3 et 4 présente une autre originalité d'importance. En effet les demi-verrous ne sont plus réalisés sous forme d'éléments indépendants rapporté sur une structure de support (les demi-moules), mais font partie intégrante de deux demicoquilles 22, 23 dont font également partie intégrante les organes constitutifs de la charnière d'articulation en rotation situés à l'opposé des organes de verrouillage.En se référant à la figure 4, on peut brièvement indiquer que les organes d'articulation comprennent un arbre de pivotement 24 sur lequel sont articulées les deux demi-coquilles ; deux biellettes 25 sont articulées à une extrémité en 26 aux angles respectifs des demi-coquilles 22, 23 et à leur autre extrémité sur un axe commun 27 solidaire d'une ex trématé d'un bras de commande 28 ; ce bras est apte à pivoter (double flèche 29) autour d'un axe 30 passant par son extrémité opposée, provoquant un déplacement approximativement linéaire (double flèche 31) de l'axe 27 ; il en résulte un déplacement par pivotement des demi-moules entre une position de fermeture (en trait continu) et une position d'ouverture (en trait mixte). However, the arrangement shown in Figures 3 and 4 has another important originality. Indeed, the half-locks are no longer produced in the form of independent elements attached to a support structure (the half-molds), but form an integral part of two half-shells 22, 23 of which the constituent members of the hinge also form an integral part. of articulation in rotation situated opposite the locking members. Referring to FIG. 4, it can be briefly indicated that the articulation members comprise a pivoting shaft 24 on which the two half-shells are articulated; two connecting rods 25 are articulated at one end at 26 at the respective angles of the half-shells 22, 23 and at their other end on a common axis 27 secured to an ex-tremat of a control arm 28; this arm is able to pivot (double arrow 29) about an axis 30 passing through its opposite end, causing an approximately linear movement (double arrow 31) of the axis 27; this results in a pivoting movement of the half-molds between a closed position (in solid line) and an open position (in dashed line).
On constate que, en position de verrouillage représentée aux figures 3 et 4, les demi-coquilles 22, 23 forment ensemble une structure autonome mécaniquement résistante, délimitant un volume central 32 dans lequel peut être incorporé le moule 3. Toutefois les efforts internes qui tendent à provoquer l'écartement des deux demi-moules n'ont plus a être supportés par la structure du moule lui-même et sont repris par les demi-coquilles assemblées : les demi-moules peuvent ainsi être réalisés sous forme amovible, en un matériau mécaniquement moins résistant que l'acier, mais plus léger et plus facile à usiner, par exemple en aluminium. L'installation se prête alors aisément, par un remplacement rapide du moule, à la fabrication d'objet divers. It can be seen that, in the locking position shown in FIGS. 3 and 4, the half-shells 22, 23 together form an autonomous mechanically resistant structure, delimiting a central volume 32 in which the mold 3 can be incorporated. However, the internal forces which tend to cause the separation of the two half-molds no longer has to be supported by the structure of the mold itself and are taken up by the assembled half-shells: the half-molds can thus be produced in removable form, in a material mechanically less resistant than steel, but lighter and easier to machine, for example aluminum. The installation then lends itself easily, by rapid replacement of the mold, to the manufacture of various objects.
Les positions haute et basse de l'arbre d'entraine- ment Il peuvent être confirmées mécaniquement par un patin 24 s'appuyant sur cet arbre sous l'action d'un ressort 25. The high and low positions of the drive shaft II can be confirmed mechanically by a shoe 24 resting on this shaft under the action of a spring 25.
Comme il va de soi, l'invention ne se limite nullement aux modes d'application et de réalisation qui ont été plus spécialement envisagés ; elle en embrasse, au contraire, toutes les variantes. As it goes without saying, the invention is in no way limited to the modes of application and embodiments which have been more especially envisaged; on the contrary, it embraces all its variants.
Claims (15)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8906195A FR2646802B1 (en) | 1989-05-11 | 1989-05-11 | LOCKING DEVICE FOR MOLD OF PORTFOLIO AND MOLD TYPE INCORPORATING SUCH A DEVICE |
| BR909002186A BR9002186A (en) | 1989-05-11 | 1990-05-10 | LOCKING DEVICE FOR INSUFLATION MOLD OR STRETCH-INSUFLATION OF WALLET TYPE AND INSUFLATION MOLD OF WALLET |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8906195A FR2646802B1 (en) | 1989-05-11 | 1989-05-11 | LOCKING DEVICE FOR MOLD OF PORTFOLIO AND MOLD TYPE INCORPORATING SUCH A DEVICE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2646802A1 true FR2646802A1 (en) | 1990-11-16 |
| FR2646802B1 FR2646802B1 (en) | 1991-09-13 |
Family
ID=9381580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8906195A Expired - Lifetime FR2646802B1 (en) | 1989-05-11 | 1989-05-11 | LOCKING DEVICE FOR MOLD OF PORTFOLIO AND MOLD TYPE INCORPORATING SUCH A DEVICE |
Country Status (2)
| Country | Link |
|---|---|
| BR (1) | BR9002186A (en) |
| FR (1) | FR2646802B1 (en) |
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| FR2681552A1 (en) * | 1991-09-24 | 1993-03-26 | Sidel Sa | OPENING AND CLOSING DEVICE FOR BLOW MOLD AND STRETCH-BLOW MOLD OF THE PORTFOLIO TYPE. |
| WO1996033059A1 (en) * | 1995-04-19 | 1996-10-24 | Sidel | Device for producing thermoplastic containers by a blow-moulding or stretch blow-moulding process |
| US6053723A (en) * | 1995-08-03 | 2000-04-25 | Sidel | Device for moulding containers from a thermoplastic material, and container production plant using same |
| US6444159B2 (en) | 1999-05-04 | 2002-09-03 | Sidel, Inc. | Blow mold shell and shell assembly |
| US6447281B1 (en) | 1998-09-11 | 2002-09-10 | Sidel, Inc. | Blow mold shell and shell holder assembly for blow-molding machine |
| US6615472B2 (en) | 1999-02-05 | 2003-09-09 | Sidel, Inc. | Quick change blow mold shell assembly |
| DE10027111B4 (en) * | 2000-05-31 | 2004-06-03 | Kronseder, Hermann, Dr.-Ing.e.h. | Blow mold and method for closing a blow mold |
| FR2856333A1 (en) * | 2003-06-19 | 2004-12-24 | Sidel Sa | MOLDING DEVICE FOR MANUFACTURING CONTAINERS OF THERMOPLASTIC MATERIAL |
| FR2856334A1 (en) * | 2003-06-19 | 2004-12-24 | Sidel Sa | MOLDING DEVICE FOR MANUFACTURING CONTAINERS OF THERMOPLASTIC MATERIAL |
| FR2863930A1 (en) * | 2003-12-19 | 2005-06-24 | Sidel Sa | Mould for blow/stretch-moulding of thermoplastic containers has two hinged halves with lock comprising hooks and rotary wedging strip |
| US6918754B2 (en) | 2000-04-22 | 2005-07-19 | Krones Ag | Blow mold and blow-molding machine |
| FR2878184A1 (en) * | 2004-11-19 | 2006-05-26 | Sidel Sas | MOLDING DEVICE FOR MANUFACTURING CONTAINERS OF THERMOPLASTIC MATERIAL |
| FR2930189A1 (en) * | 2008-04-21 | 2009-10-23 | Sidel Participations | DEVICE FOR MOLDING CONTAINERS COMPRISING MEANS FOR ADJUSTING THE VOLUMIC DIMENSIONS OF THE MOLDING CAVITY |
| EP2292406A2 (en) | 2009-09-08 | 2011-03-09 | Sidel Participations | Machine for the manufacture of containers comprising a module for controlling devices of a moulding unit so as to effect a change of mould |
| WO2011026980A1 (en) | 2009-09-07 | 2011-03-10 | Sidel Participations | Method for changing a mould |
| WO2011026803A1 (en) | 2009-09-07 | 2011-03-10 | Sidel Participations | Blow-molding device provided with means for attaching, by suction, a half-mold to a back wall of a corresponding recess of a mold carrier |
| WO2011026828A1 (en) | 2009-09-07 | 2011-03-10 | Sidel Participations | Molding device provided with a controlled means for clampingly attaching a half-mold by means of slidable attachment bolts |
| WO2011026805A1 (en) | 2009-09-07 | 2011-03-10 | Sidel Participations | Molding device provided with means for attaching a half-mold onto a mold holder by locking |
| FR2954207A1 (en) * | 2009-12-21 | 2011-06-24 | Sidel Participations | MACHINE FOR MANUFACTURING CONTAINERS COMPRISING A MOLD CHANGE ASSISTANCE SYSTEM |
| WO2012016951A1 (en) | 2010-08-03 | 2012-02-09 | Sidel Participations | Forming machine equipped with a moulding unit having compensating means controlled by at least one automatically actuated valve |
| WO2012119913A1 (en) | 2011-03-08 | 2012-09-13 | Sidel Participations | Automated system for changing a mold of a molding unit with which a machine for manufacturing containers is provided |
| WO2012120031A1 (en) | 2011-03-08 | 2012-09-13 | Sidel Participations | System for aiding in the replacement of a mould of a moulding unit of a machine for manufacturing containers |
| EP2626190A1 (en) | 2012-02-09 | 2013-08-14 | Sidel Participations | Device for manufacturing containers |
| WO2013164387A1 (en) | 2012-05-04 | 2013-11-07 | Sidel Participations | Equipment intended for manufacturing containers from preforms and comprising a mold-decontaminating device, and decontamination method |
| WO2013171402A1 (en) | 2012-05-15 | 2013-11-21 | Sidel Participations | Molding device for manufacturing containers via blow-molding or stretch blow-molding |
| WO2014146330A1 (en) * | 2013-03-19 | 2014-09-25 | 江苏新美星包装机械股份有限公司 | Die clamping mechanism |
| EP2368692B1 (en) | 2010-03-26 | 2016-05-18 | Krones AG | Blow moulding assembly with controlled locking mechanism |
| WO2016170277A1 (en) | 2015-04-23 | 2016-10-27 | Sidel Participations | Method for cooling heated molds from a machine for molding containers |
| FR3055573A1 (en) * | 2016-09-07 | 2018-03-09 | Sidel Participations | LOCKING DEVICE FOR A MOLDING UNIT OF THERMOPLASTIC CONTAINERS |
| WO2019170976A1 (en) | 2018-03-07 | 2019-09-12 | Sidel Participations | Locking finger for a unit for moulding containers made of thermoplastic material |
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| WO2014146330A1 (en) * | 2013-03-19 | 2014-09-25 | 江苏新美星包装机械股份有限公司 | Die clamping mechanism |
| WO2016170277A1 (en) | 2015-04-23 | 2016-10-27 | Sidel Participations | Method for cooling heated molds from a machine for molding containers |
| US10265907B2 (en) | 2016-09-07 | 2019-04-23 | Sidel Participations | Locking device for a molding unit for containers of thermoplastic material |
| EP3292971A1 (en) | 2016-09-07 | 2018-03-14 | Sidel Participations | Locking device for a unit for blow moulding thermoplastic containers |
| FR3055573A1 (en) * | 2016-09-07 | 2018-03-09 | Sidel Participations | LOCKING DEVICE FOR A MOLDING UNIT OF THERMOPLASTIC CONTAINERS |
| WO2019170977A1 (en) | 2018-03-07 | 2019-09-12 | Sidel Participations | Locking finger for a unit for moulding containers made from thermoplastic material |
| FR3078648A1 (en) * | 2018-03-07 | 2019-09-13 | Sidel Participations | LOCKING FINGER FOR A THERMOPLASTIC CONTAINER MOLDING UNIT |
| FR3078647A1 (en) * | 2018-03-07 | 2019-09-13 | Sidel Participations | LOCKING FINGER FOR A THERMOPLASTIC CONTAINER MOLDING UNIT |
| WO2019170976A1 (en) | 2018-03-07 | 2019-09-12 | Sidel Participations | Locking finger for a unit for moulding containers made of thermoplastic material |
| US11279074B2 (en) | 2018-03-07 | 2022-03-22 | Sidel Participations | Locking finger for a unit for molding containers made of thermoplastic material |
| US11351714B2 (en) | 2018-03-07 | 2022-06-07 | Sidel Participations | Locking finger for a unit for molding containers made from thermoplastic material |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2646802B1 (en) | 1991-09-13 |
| BR9002186A (en) | 1991-08-13 |
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