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WO1996003266A1 - Moulding machine for the production of pressure or push moulded articles and equipment for such moulding machines - Google Patents

Moulding machine for the production of pressure or push moulded articles and equipment for such moulding machines Download PDF

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Publication number
WO1996003266A1
WO1996003266A1 PCT/FR1995/000956 FR9500956W WO9603266A1 WO 1996003266 A1 WO1996003266 A1 WO 1996003266A1 FR 9500956 W FR9500956 W FR 9500956W WO 9603266 A1 WO9603266 A1 WO 9603266A1
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WO
WIPO (PCT)
Prior art keywords
plate
molds
support table
mold
twin
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.)
Ceased
Application number
PCT/FR1995/000956
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French (fr)
Inventor
Pierre Hugot
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to EP95925896A priority Critical patent/EP0771261A1/en
Priority to AU29848/95A priority patent/AU2984895A/en
Publication of WO1996003266A1 publication Critical patent/WO1996003266A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/03—Injection moulding apparatus
    • B29C45/04—Injection moulding apparatus using movable moulds or mould halves
    • B29C45/0408—Injection moulding apparatus using movable moulds or mould halves involving at least a linear movement
    • B29C45/0416—Injection moulding apparatus using movable moulds or mould halves involving at least a linear movement co-operating with fixed mould halves
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/83—Lubricating means

Definitions

  • the invention relates to a molding machine for producing parts molded under pressure or by pushing a material, of the type comprising a fixed plate, a mobile plate, means for moving the mobile plate relative to the fixed plate, and at least two half-molds arranged to be carried each by one of the plates, and to constitute a mold after closing. It extends to equipment intended to be mounted on a conventional molding machine.
  • machines have been designed for injection molding of a plastic material, such as for example described in US Patents 3,091,809, US 4,379,685, DE 2,849,604, EP 536,883, JP 6.015.684 and DE 2.062.432, comprising, associated with one of the fixed or movable plates, two identical twin half-molds, and means for moving these twin half-molds adapted to bring them alternately either opposite each other tray for the injection of the material, or in a position offset laterally with respect to this other tray for the ejection of the molding.
  • Such molding machines make it possible to reduce the production cycle because, simultaneously with the production of a part, by injection of a material, the previously produced part is ejected.
  • the invention aims to improve this type of molding machine and has the essential objective of providing a molding machine, on the one hand, whose time of the molded parts production cycle is optimized and, on the other hand, whose means for holding the twin half-molds are very simplified and make it possible to minimize the stresses to which the structure of this molding machine is subjected, giving the latter optimum reliability.
  • Another objective of the invention is to provide a molding machine which optimally facilitates any intervention on the half-molds, and in particular on the molded parts before ejection of the latter.
  • the invention relates to a molding machine for producing parts molded under pressure or by pushing a material, comprising:
  • this molding machine is characterized in that it comprises:
  • a horizontal support table arranged in cantilever with respect to said plate and suitable for carrying the twin half-molds, said support table and said twin half-molds comprising positioning means consisting of centering pins projecting by relative to the support table, and in orifices of length greater than that of the centering pins along an axis parallel to the axis of movement of the movable plate, formed on the underside of the semi-molds which are twinned and capable of each housing a said centering pins,
  • such a molding machine makes it possible to carry out, in masked time, the cleaning and lubrication operations of the half-molds, which are compulsory for such a type of machine, and thus leads to a significant increase in the production cycles of a part. molded.
  • the spraying means advantageously comprise:
  • At least one spraying boom carried by the support table associated with the fixed or movable plate and arranged so as to be positioned between the twin mold halves,
  • At least two spray bars arranged on either side of the other mobile or fixed plate.
  • the spraying means advantageously comprise, for each of said support tables, at least one ramp spraying carried by the latter and arranged so as to be positioned between the twin semi-molds.
  • the spray bars associated with a tray are therefore arranged to be opposite a half-mold carried by the plate vis-à-vis when moving the (or) table (s) -sup ⁇ ort (s), and ensure the cleaning and lubrication of these half - molds in masked time after extraction of the molded part or extraction of the molding according to the half-mold considered.
  • the means for positioning the semi-molds paired on the table (s) -support (s) are extremely simple since these half-molds are simply placed without the addition of any fixing device , and however ensure perfect relative positioning of said fixed and mobile half-molds, while allowing adjustment on the order of a few tenths of a millimeter, for example, during closure, thanks to the elongated shape of the holes in the underside of the twin mold halves.
  • the molding machine comprises:
  • the machine according to the invention comprises two ejection assemblies arranged on either side of a plate, which on the one hand allow the ejection of the molding in masked time, and on the other hand facilitate access to the assemblies ejection.
  • the ejectors remain in the advanced position during the translation of the support table towards the injection position, which makes it possible to lubricate said ejectors.
  • this space can be minimized (between 50 and 100 mm) which leads to a saving of time during opening and closing, and to an optimization of the production cycle time.
  • the molding machine comprises two machining stations arranged on either side of a plate opposite the ejection assemblies secured to the other plate, adapted to allow carrying out machining operations of the molded parts, before ejection, in the ejection position of the half-molds.
  • the means for guiding each half-mold paired along the associated plate comprise two slides, high and low, projecting frontally with respect to said plate, and extending laterally on either side of the latter over a length equivalent to the stroke of the support table, said slides being arranged to accommodate two longitudinal slides of conjugate shape, formed in the upper part and in the lower part of each half-mold, and the upper slide comprising two longitudinal end sections which can be dismantled so as to allow the half-molds to be removed in the ejection position of the latter.
  • Such slides make it possible to perfectly guide the twin half-molds during translations of the table (s) -support (s). In addition, they make it possible to contain the force applied to the molding during ejection, acting as means for holding the half-molds in the ejection position of the latter. Therefore, the design of these slides avoids having to fix the half-mold in order to contain this effort, unlike current molding machines. In addition, the removal of a semi-mold paired for its change or any other operation is very easy because it simply requires dismantling one of the end sections of the upper slide.
  • the molding machine comprises means for temporarily holding each semi-mold paired against the associated plate, comprising locking fingers associated with vertical displacement means integral with said plate, able to come lodge in conjugate housings provided in the lower and upper faces of each twin mold half.
  • each tray associated with a support table advantageously has a front wall.
  • housings incorporating a retractable element urged by elastic means capable of urging the mold halves in a direction tending to detach the latter from the plate.
  • the purpose of this arrangement is to take off the half-molds relative to the plate after injection, thus replacing these half-molds in good translation conditions.
  • the molding machine comprises, associated with each support table, elastic stop means capable of damping said support table at the end of the stroke.
  • Such elastic stop means provide, by relying on the support table, on the one hand, a function of end of stroke damper and, on the other hand, a function of starting assistance.
  • the desired travel time of the support table being of the order of a few seconds for a distance of the order of a meter and a transported load of the order of several hundred kilograms, such means of stop contribute to fulfill this objective because they participate in obtaining a high starting torque and a significant damping.
  • stop means can be associated with a pawl controlled simultaneously in order to avoid a rebound effect, and also with position detectors making it possible to locate the position of the support table and therefore half - twin molds whatever their dimensions.
  • the invention extends to equipment for a conventional molding machine comprising in combination:
  • a horizontal support table intended to be arranged in cantilever with respect to said plate, provided with means for positioning two identical half-molds, said to be paired, adapted so that said half-molds are arranged at a distance from one the other, and aligned in a plane parallel to that of the plate, said positioning means consisting of centering pins projecting relative to the support table and of orifices of length greater than that of the centering pins along an axis parallel to the axis moving the movable plate, arranged on the underside of the twin mold halves and each capable of accommodating one of said centering pins,
  • FIG. 1 is a block diagram of a first embodiment of a molding machine according to the invention
  • FIG. 2 is a block diagram of a second embodiment for making a molding machine according to the invention
  • Figure 3 is a block diagram of a third embodiment of a molding machine according to the invention.
  • FIG. 4 is a longitudinal section through a vertical plane A of the molding machine according to the first embodiment,.
  • FIG. 5 is a top view thereof,
  • FIG. 6 is a side view thereof,. and Figure 7 is a cross section through a vertical plane B.
  • the molding machines shown diagrammatically in FIGS. 1 to 3 all conventionally comprise a fixed plate 1, and a movable plate 2 capable of moving relative to the fixed plate 1.
  • the fixed plate 1 carries a fixed half-mold 3, while the mobile plate 2 is associated with a support table 4 able to move according to a direction orthogonal to the direction of movement of said movable plate 2.
  • this support table 4 carries two identical half-molds 5, 6 arranged so as to come alternately opposite the movable plate 2 during the movements of said support table 4 .
  • the movable plate 2 carries a fixed half-mold 7, while the fixed plate 1 is associated with a support table 4 moving transversely in front of said fixed plate.
  • this support table 4 carries two identical half-molds 8, 9 arranged so as to come alternately opposite the fixed plate 1, during the movements of said support table.
  • the fixed 1 and mobile 2 plates are both associated with support tables 10, 11 each carrying two identical half-molds 12, 13 and 14, 15, the two pairs of half-molds 12, 13, and 14, 15 being arranged symmetrically with respect to the longitudinal axis of the machine so as to allow interventions on the two half-molds (12, 15 in the example) being in position ejection.
  • FIGS. 4 to 7 show in more detail a molding machine in accordance with that shown diagrammatically in FIG. 1.
  • This molding machine comprises, conventionally, a frame 16 mounted on a base 57, and carrying a fixed plate 1 associated with injection means 17 and provided with fixing means (not shown) of a fixed half-mold 3.
  • each of these fixed 1 and mobile 2 plates is equipped with a frame 19, 20 extending it on either side by approximately 1 meter.
  • the purpose of the frame 20 associated with the movable plate 2 is on the one hand to support, outside the machine frame 16, a chassis 21 supporting a translation table 22, and on the other hand to receive two ejection assemblies.
  • the frame 19 associated with the fixed plate 1 aims to carry machining stations.
  • this frame 19 is supported, towards each of its ends, by an upright extending between said frame and the base 57 and secured to the latter, and the function of which is to ensure the transverse stability of this frame 19.
  • these frames 19, 20 are made from tubular profiles.
  • the chassis 21 is itself made up of a ribbed box of mechanically welded steel connected to the movable plate 2 and to the frame 20 by screwing thereon, and arranged so as to extend in overhang relative to the plane said movable plate and frame.
  • This chassis 21 rests, moreover, on the machine frame 16 by means of adjustable sliding pads 21a identical to those conventionally fitted to the movable plate 2, and moving on the sliding surfaces 16a of the machine frame 16 used for displacement of said movable plate.
  • This chassis 21 is also provided with reservations allowing the passage of the guide columns 18 of the movable plate 2.
  • the upper part of this chassis 21 carries two roller guide rails, such as 24, extending longitudinally on said chassis.
  • the translation table 22 has dimensions defined as a function of the standard dimensions of molds, so as to be able to carry two half-molds 5, 6.
  • this table 22 includes centering pins such as 23 of oblong shape, making protrusion on said plate, and arranged with a standard spacing adapted so that each pin comes to be housed in an orifice such as 5a formed on the underside of the half-molds 5, 6.
  • These orifices 5a also have a shape elongated with a length greater than that of the pins 23 along an axis parallel to the axis of movement of the movable plate 2, so as to allow an adjustment of the position of the half-mold 5, 6 when the machine is closed.
  • the translation table 22 comprises, on the underside, ball pads such as 25 capable of cooperating with the guide rails 24.
  • the translational drive means of this table 22 comprise a worm / nut 26 system, said worm being driven in rotation by means of a motor 27 and a belt reducer 28.
  • elastic stop means such as 29, consisting for example of short stroke jacks, are adapted to serve as a stop for the translation table 22 at the end of movement of the latter.
  • the frame 20 associated with the movable plate 2 carries, in addition, two ejection assemblies arranged on either side of said plate and each comprising at least one ejection cylinder such as 30 disposed horizontally and, mounted on the rod of this cylinder 30, a plurality of ejection tails, such as 31, the number and arrangement of which are adapted, in a conventional manner, to the molding to be produced.
  • the movable plate 2 further comprises means for guiding the half-molds 5, 6 and for holding the latter in their ejection position.
  • These guiding and holding means comprise two parts 32, 33 for upper and lower guide secured to the front face 2a of the movable plate, and each forming a spoiler 32a, 33a, oriented respectively downwards and upwards.
  • These spoilers 32a, 33a of rectangular section are adapted to delimit a guide groove 34, 35, with the front face 2a of the plate, and comprise, opposite said front face, a rear face coated with a sliding material 36.
  • these guide pieces 32, 33 extend over a length equivalent to the length of the frames 19 and 20.
  • the upper guide piece 32 is split longitudinally into three sections: a fixed central section 32a and two sections ends such as 32b, arranged vertically above the removable ejection assemblies 30, intended to allow the twin half-molds 5, 6 to be changed. With a view to guiding them, the half-molds 5,
  • the movable plate 2 comprises means for temporarily holding the half-molds 5, 6 able to hold said half-molds pressed against the front face 2a of said plate.
  • These holding means consist of locking fingers such as 39, 40 carried by jacks such as 41 able to move them vertically, said locking fingers being arranged so as to cooperate with conjugate housings such as 42, formed in the faces. lower and upper half molds 5, 6.
  • these locking fingers 39, 40 have a trapezoidal section adapted to generate a retreat of half-molds 5, 6 in the direction of the movable plate 2, as and when these fingers are introduced into the housings 42, 43 vis-à-vis said half-molds.
  • the movable plate 2 further comprises housings such as 45 formed in its front face, housing a ball 46 associated with a spring 47 arranged to urge said ball so that it takes off the half-molds 5, 6 relatively to said plate, once the locking fingers 39, 40 retracted, so as to replace said half-molds in good translation conditions.
  • the translation table 22 carries, moreover, a vertical spraying ramp 48 arranged so as to be between the two half-molds 5, 6 and adapted to ensure the cleaning and the lubrication of the fixed half-mold 3, during movement. of this translation table.
  • This translation table 22 further comprises two removable protective flaps 49, 50 each disposed above one end of said table and intended to provide protection against accidental projections of material during injection.
  • the frame 19 also carries two spray bars 53, 54 arranged on either side of the fixed plate 1 and adapted to ensure the cleaning and the lubrication of the half-molds 5, 6, when the latter move towards their position. injection.
  • these two spray booms 53, 54 may possibly be supplemented by booms adapted to perfect the cleaning and the lubrication of the mold halves 5, 6 after ejection, and before the translation of the latter.
  • This frame 19 carries, finally, two machining stations 55, 56 (tapping machine, drill ...) arranged so as to be located opposite the half-molds 5, 6, in the ejection position of the latter.
  • the molding machine according to the invention is equipped with rotating brackets as shown diagrammatically at 57 arranged on either side thereof in order to allow the mold halves 5, 6 arranged in their position to be changed. ejection, and the fixed half-mold 3.
  • the molding machine as described above makes it possible to carry out the operations of ejection of the molds, evacuation of the latter, cleaning and lubrication of the half-molds 3, 5, 6 in masked time. Indeed, while one half-mold 5, 6 is in the injection position, the other half-mold 6, 5 is in the ejection position. In addition, the cleaning and lubrication operations take place, for the half-molds 5, 6, after ejection during their movement, by means of the ramps 53,
  • This design allows a significant saving on the time of a production cycle. For example, the time of a cycle can be reduced significantly by half compared to current machines.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

Moulding machine for the production of pressure or push moulded parts, of the type comprising a stationary plate (1) and a moving plate (2) and two half-moulds forming a mould once they are closed. According to the invention, the machine comprises, associated with one of the plates (2), a support (22) carrying two identical half-moulds (5, 6), which can be transversely shifted in front of the plate (2) in a reciprocating movement so as to alternately position each half-mould (5, 6) either in an injection position or in an ejection position. The machine also comprises spraying manifolds (48, 53, 54) carried by the support (22) and associated with the other plate (1), the manifolds being arranged so as be located briefly opposite the half-moulds (5, 6) after the moulding has been ejected or removed.

Description

MACHINE A MOULER POUR LA REALISATION DE PIECES MOULEES SOUSMOLDING MACHINE FOR THE PRODUCTION OF MOLDED PARTS UNDER

PRESSION OU PAR POUSSEE D'UN MATERIAU, ET EQUIPEMENTPRESSURE OR PUSH OF A MATERIAL, AND EQUIPMENT

DESTINE A DE TELLES MACHINES A MOULERFOR SUCH MOLDING MACHINES

L'invention concerne une machine à mouler pour la réalisation de pièces moulées sous pression ou par poussée d'un matériau, du type comportant un plateau fixe, un plateau mobile, des moyens de déplacement du plateau mobile relativement au plateau fixe, et au moins deux demi- moules agencés pour être portés chacun par un des plateaux, et pour constituer un moule après fermeture. Elle s'étend à un équipement destiné à être monté sur une machine à mouler classique.The invention relates to a molding machine for producing parts molded under pressure or by pushing a material, of the type comprising a fixed plate, a mobile plate, means for moving the mobile plate relative to the fixed plate, and at least two half-molds arranged to be carried each by one of the plates, and to constitute a mold after closing. It extends to equipment intended to be mounted on a conventional molding machine.

Les machines à mouler actuelles, sous pression ou par poussée de matériaux, tels que les métaux, les matières plastiques ou composites, les caoutchoucs,... sont animées d'un mouvement relatif entre un plateau fixe et un plateau mobile portant chacun un demi-moule. De façon classique, le cycle de production des pièces moulées est le suivant :Current molding machines, under pressure or by pushing materials, such as metals, plastics or composites, rubbers, ... are driven by a relative movement between a fixed plate and a movable plate each carrying a half -mold. Conventionally, the production cycle for molded parts is as follows:

. déplacement relatif des plateaux fixe et mobile de façon à accoler les demi-moules et à former un moule fermé à l'intérieur duquel est injecté ou poussé un matériau préalablement porté à une température donnée, jusqu'à remplissage de l'empreinte, solidification ou polymérisation du matériau,. relative displacement of the fixed and movable plates so as to attach the half-molds and form a closed mold inside which is injected or pushed a material previously brought to a given temperature, until filling of the imprint, solidification or polymerization of the material,

. séparation des demi-moules après un temps variable fonction des matériaux utilisés, de la massivité et de la forme des pièces..., ladite séparation entraînant une extraction de la pièce moulée par rapport à un des demi-moules, éjection du moulage une fois la séparation des demi-moules effectuée, . nettoyage et lubrification des deux demi- moules.. separation of the half-molds after a variable time depending on the materials used, the massiveness and the shape of the parts, said separation resulting in an extraction of the molded part from one of the half-molds, ejection of the mold once the separation of the half-molds carried out,. cleaning and lubrication of the two half-molds.

L'inconvénient majeur de ces machines à mouler réside dans le fait que le cycle de production ci- dessus décrit est relativement long, et n'est nullement optimisé. De plus, toute opération de maintenance ou d'intervention sur les demi-moules s'avère délicate.The major drawback of these molding machines is that the production cycle above described is relatively long, and is by no means optimized. In addition, any maintenance or intervention operation on the half-molds is delicate.

En vue de pallier cet inconvénient, il a été conçu des machines à mouler par injection d'une matière plastique, telles que par exemple décrites dans les brevets US 3.091.809, US 4.379.685, DE 2.849.604, EP 536.883, JP 6.015.684 et DE 2.062.432, comportant, associés à un des plateaux fixe ou mobile, deux demi-moules jumelés identiques, et des moyens de déplacement de ces demi-moules jumelés adaptés pour les amener alternativement soit en regard de l'autre plateau en vue de l'injection du matériau, soit dans une position décalée latéralement par rapport à cet autre plateau en vue de l'éjection du moulage.In order to overcome this drawback, machines have been designed for injection molding of a plastic material, such as for example described in US Patents 3,091,809, US 4,379,685, DE 2,849,604, EP 536,883, JP 6.015.684 and DE 2.062.432, comprising, associated with one of the fixed or movable plates, two identical twin half-molds, and means for moving these twin half-molds adapted to bring them alternately either opposite each other tray for the injection of the material, or in a position offset laterally with respect to this other tray for the ejection of the molding.

De telles machines à mouler permettent de réduire le cycle de production du fait que simultanément à la réalisation d'une pièce, par injection d'un matériau, s'opère l'éjection de la pièce préalablement réalisée. L'invention vise à perfectionner ce type de machine à mouler et a pour objectif essentiel de fournir une machine à mouler, d'une part, dont le temps du cycle de production de pièces moulées est optimisé et, d'autre part, dont les moyens de maintien des demi-moules jumelés sont très simplifiés et permettent de minimiser les sollicitations auxquelles est soumise la structure de cette machine à mouler, conférant à cette dernière une fiabilité optimale.Such molding machines make it possible to reduce the production cycle because, simultaneously with the production of a part, by injection of a material, the previously produced part is ejected. The invention aims to improve this type of molding machine and has the essential objective of providing a molding machine, on the one hand, whose time of the molded parts production cycle is optimized and, on the other hand, whose means for holding the twin half-molds are very simplified and make it possible to minimize the stresses to which the structure of this molding machine is subjected, giving the latter optimum reliability.

Un autre objectif de l'invention est de fournir une machine à mouler facilitant de façon optimale toute intervention sur les demi-moules, et notamment sur les pièces moulées avant éjection de ces dernières.Another objective of the invention is to provide a molding machine which optimally facilitates any intervention on the half-molds, and in particular on the molded parts before ejection of the latter.

A cet effet, l'invention vise une machine à mouler pour la réalisation de pièces moulées sous pression ou par poussée d'un matériau, comportant :To this end, the invention relates to a molding machine for producing parts molded under pressure or by pushing a material, comprising:

- un plateau fixe et un plateau mobile,- a fixed platform and a mobile platform,

- des moyens de déplacement du plateau mobile relativement au plateau fixe, - deux demi-moules associés chacun à un plateau et adaptés pour constituer un moule après fermeture,means for moving the movable plate relative to the fixed plate, - two half-molds each associated with a tray and adapted to constitute a mold after closing,

- jumelé avec au moins un des demi-moules, un demi-moule identique audit demi-moule, disposé à distance et dans l'alignement de ce dernier, selon un plan parallèle à celui du plateau associé,- combined with at least one of the half-molds, a half-mold identical to said half-mold, placed at a distance and in alignment with the latter, along a plane parallel to that of the associated plate,

- des moyens de déplacement en translation de chaque paire de demi-moules jumelés selon un mouvement alternatif orthogonal à la direction de déplacement du plateau mobile, adaptés pour amener alternativement l'un et l'autre desdits demi-moules jumelés soit en regard du plateau associé dans une position, dite d'injection, soit dans une position, dite d'éjection, décalée latéralement par rapport audit plateau,- Means for translational movement of each pair of semi-molds twinned in an alternating movement orthogonal to the direction of movement of the movable plate, adapted to alternately bring one and the other of said semi-molds is opposite the plate associated in a so-called injection position, or in a so-called ejection position, offset laterally relative to said plate,

Selon l'invention, cette machine à mouler se caractérise en ce qu'elle comprend :According to the invention, this molding machine is characterized in that it comprises:

- associé à chaque plateau équipé de deux demi-moules jumelés : . une table-support horizontale disposée en porte-à-faux par rapport audit plateau et adaptée pour porter les demi-moules jumelés, ladite table- support et lesdits demi-moules jumelés comportant des moyens de positionnement consistant en des pions de centrage faisant saillie par rapport à la table-support, et en des orifices de longueur supérieure à celle des pions de centrage selon un axe parallèle à l'axe de déplacement du plateau mobile, ménagés en sous-face des demi-moules jumelés et aptes à loger chacun un desdits pions de centrage,- associated with each tray equipped with two twin half-molds:. a horizontal support table arranged in cantilever with respect to said plate and suitable for carrying the twin half-molds, said support table and said twin half-molds comprising positioning means consisting of centering pins projecting by relative to the support table, and in orifices of length greater than that of the centering pins along an axis parallel to the axis of movement of the movable plate, formed on the underside of the semi-molds which are twinned and capable of each housing a said centering pins,

. des moyens de déplacement en translation de la table-support selon un mouvement alternatif orthogonal à la direction de déplacement du plateau mobile, . et des moyens de guidage des demi-moules jumelés le long du plateau associé,. means for translational movement of the support table in an alternating movement orthogonal to the direction of movement of the movable plate,. and means for guiding the twin molds along the associated plate,

- des moyens de pulvérisation associés à chaque plateau fixe et mobile, et disposés de façon à assurer "à la volée" le nettoyage et la lubrification des demi-moules après extraction de la pièce moulée ou éjection du moulage, lors des déplacements en translation de chaque table-support. En premier lieu, une telle machine à mouler permet de réaliser en temps masqué les opérations de nettoyage et de lubrification des demi-moules, obligatoires pour un tel type de machine, et conduit ainsi à une augmentation notable des cycles de production d'une pièce moulée.spraying means associated with each fixed and mobile plate, and arranged so as to ensure "on the fly" the cleaning and lubrication of the half-molds after extraction of the molded part or ejection of the mold, during translational movements of each support table. Firstly, such a molding machine makes it possible to carry out, in masked time, the cleaning and lubrication operations of the half-molds, which are compulsory for such a type of machine, and thus leads to a significant increase in the production cycles of a part. molded.

En effet, ces opérations de nettoyage et de lubrification sont réalisées lors du déplacement en translation de la (ou des) table(s)-support(s) grâce à la disposition des moyens de pulvérisation qui assurent ces fonctions lorsque chaque demi-moule disposé en vis-à-vis d'un organe de pulvérisation se trouve en regard de celle-ci.Indeed, these cleaning and lubrication operations are carried out during the translational movement of the table (s) -support (s) thanks to the arrangement of the spraying means which ensure these functions when each half-mold placed vis-à-vis a spraying member is located opposite the latter.

A cet effet, lorsque la machine à mouler comporte une seule table-support associée à un des plateaux fixe ou mobile, les moyens de pulvérisation comprennent avantageusement :To this end, when the molding machine comprises a single support table associated with one of the fixed or mobile plates, the spraying means advantageously comprise:

- au moins une rampe de pulvérisation portée par la table-support associée au plateau fixe ou mobile et disposée de façon à être positionnée entre les demi-moules jumelés,at least one spraying boom carried by the support table associated with the fixed or movable plate and arranged so as to be positioned between the twin mold halves,

- au moins deux rampes de pulvérisation disposées de part et d'autre de l'autre plateau mobile ou fixe.- At least two spray bars arranged on either side of the other mobile or fixed plate.

Lorsque, par contre, la machine à mouler comprend deux tables-supports, chacune associée à un des plateaux fixe et mobile, adaptées pour être déplacées en synchronisme, les moyens de pulvérisation comprennent avantageusement, pour chacune desdites tables-supports, au moins une rampe de pulvérisation portée par cette dernière et disposée de façon à être positionnée entre les demi- moules jumelés.When, on the other hand, the molding machine comprises two support tables, each associated with one of the fixed and mobile plates, adapted to be moved in synchronism, the spraying means advantageously comprise, for each of said support tables, at least one ramp spraying carried by the latter and arranged so as to be positioned between the twin semi-molds.

Dans l'un et l'autre cas, les rampes de pulvérisation associées à un plateau sont donc disposées pour se trouver en regard d'un demi-moule porté par le plateau en vis-à-vis lors du déplacement de la (ou des) table(s)-supρort(s) , et assurent le nettoyage et la lubrification de ces demi-moules en temps masqué après extraction de la pièce moulée ou extraction du moulage selon le demi-moule considéré.In both cases, the spray bars associated with a tray are therefore arranged to be opposite a half-mold carried by the plate vis-à-vis when moving the (or) table (s) -supρort (s), and ensure the cleaning and lubrication of these half - molds in masked time after extraction of the molded part or extraction of the molding according to the half-mold considered.

Par ailleurs, les moyens de positionnement des demi-moules jumelés sur la (ou les) table(s)-support(s) sont d'une simplicité extrême puisque ces demi-moules sont simplement posés sans adjonction d'un quelconque dispositif de fixation, et assurent toutefois un positionnement relatif parfait desdits demi-moules fixe(s) et mobile(s), tout en autorisant un ajustement de l'ordre de quelques dixièmes de millimètres par exemple, lors de la fermeture, grâce à la forme allongée des orifices ménagés en sous-face des demi-moules jumelés.Furthermore, the means for positioning the semi-molds paired on the table (s) -support (s) are extremely simple since these half-molds are simply placed without the addition of any fixing device , and however ensure perfect relative positioning of said fixed and mobile half-molds, while allowing adjustment on the order of a few tenths of a millimeter, for example, during closure, thanks to the elongated shape of the holes in the underside of the twin mold halves.

Il est à noter que cet agencement qui autorise un ajustement de la position des demi-moules jumelés lors du déplacement relatif des plateaux en vue de la fermeture du moule, présente un caractère primordial. En effet, du fait de cet agencement, aucun effort résultant de cette fermeture n'est transmis à la (ou aux) table(s)- support(s) et tout risque d'endommagement de celle(s)-ci est donc écarté, garantissant ainsi une fiabilité optimale de fonctionnement.It should be noted that this arrangement, which allows an adjustment of the position of the twin mold halves during the relative movement of the plates for closing the mold, is of primary importance. In fact, due to this arrangement, no effort resulting from this closure is transmitted to the table (s) - support (s) and any risk of damage to it (s) is therefore eliminated. , thus guaranteeing optimal operating reliability.

Selon une autre caractéristique de l'invention, la machine à mouler comprend :According to another characteristic of the invention, the molding machine comprises:

- deux ensembles d'éjection du moulage solidarisés à un plateau doté d'une table-support, et disposés de part et d'autre dudit plateau de façon à se trouver chacun en regard d'un demi-moule jumelé dans sa position d'éjection,- two molding ejection assemblies secured to a plate provided with a support table, and arranged on either side of said plate so as to be each facing a semi-mold paired in its position ejection,

- des moyens de maintien de chaque demi- moule jumelé, dans la position d'éjection de ce dernier. De cette façon, la machine n'est immobilisée que pendant le temps nécessaire pour remplir sa fonction essentielle, à savoir fermeture du moule, injection, et ouverture du moule, toutes les autres opérations complémentaires et nécessaires étant effectuées en temps masqué.- Means for holding each twin half-mold, in the ejection position of the latter. In this way, the machine is immobilized only for the time necessary to fulfill its essential function, namely closing the mold, injection, and opening the mold, all the others. additional and necessary operations being carried out in masked time.

De plus, contrairement aux machines classiques actuelles qui possèdent un seul ensemble d'éjection centré sur le plateau associé et difficile d'accès, en particulier pour raccorder la tige de piston à la plaque d'éjection supportant la batterie d'éjecteurs, la machine selon l'invention comprend deux ensembles d'éjection disposés de part et d'autre d'un plateau, qui d'une part permettent de réaliser l'éjection du moulage en temps masqué, et d'autre part facilitent l'accès aux ensembles d'éjection.In addition, unlike current conventional machines which have a single ejection assembly centered on the associated plate and difficult to access, in particular for connecting the piston rod to the ejection plate supporting the ejector battery, the machine according to the invention comprises two ejection assemblies arranged on either side of a plate, which on the one hand allow the ejection of the molding in masked time, and on the other hand facilitate access to the assemblies ejection.

Or, il convient de noter que parmi les causes d'arrêt de production les plus fréquentes dues au moule, on trouve dans une majorité des cas la casse ou 1'étamage des broches et/ou des embouts d'éjecteurs. La disposition ci-dessus décrite de la machine à mouler selon l'invention permet d'apporter deux améliorations majeures concernant ces points. En effet, et en premier lieu, en cas de casse ou d'étamage des broches ou des éjecteurs, le demi- moule jumelé disposé en position d'éjection est facilement accessible et peut donc être dépanné aisément. A noter qu'à l'heure actuelle le changement de broche ou d'éjecteurs nécessite un démontage du demi-moule mobile par rapport au plateau associé. On conçoit donc le gain de temps important procuré par l'invention.However, it should be noted that among the most frequent causes of production stoppage due to the mold, we find in a majority of cases breakage or tinning of the pins and / or ejector tips. The arrangement described above of the molding machine according to the invention makes it possible to make two major improvements concerning these points. Indeed, and firstly, in the event of breakage or tinning of the pins or ejectors, the twin half-mold disposed in the ejection position is easily accessible and can therefore be easily repaired. Note that at present the change of spindle or ejectors requires disassembly of the movable half-mold relative to the associated plate. We therefore understand the significant time savings provided by the invention.

De plus, il est à noter que, une fois le moulage éjecté, les éjecteurs restent en position avancée durant la translation de la table-support vers la position d'injection, ce qui permet de lubrifier lesdits éjecteurs.In addition, it should be noted that, once the molding has been ejected, the ejectors remain in the advanced position during the translation of the support table towards the injection position, which makes it possible to lubricate said ejectors.

Il est également à noter, que contrairement aux techniques classiques actuelles qui imposent un espace important entre les demi-moules (de 300 mm à 500 mm) en vue de l'éjection, la préhension et l'évacuation du moulage, selon l'invention, cet espace peut être minimisé (compris entre 50 et 100 mm) ce qui conduit à un gain de temps lors de l'ouverture et de la fermeture, et à une optimisation du temps du cycle de production.It should also be noted that, unlike current conventional techniques which impose a large space between the half-molds (from 300 mm to 500 mm) for the purpose of ejection, gripping and evacuation of the molding, according to the invention , this space can be minimized (between 50 and 100 mm) which leads to a saving of time during opening and closing, and to an optimization of the production cycle time.

Selon une autre caractéristique de l'invention, la machine à mouler comprend deux postes d'usinage disposés de part et d'autre d'un plateau en regard des ensembles d'éjection solidaires de l'autre plateau, adaptés pour permettre d'effectuer des opérations d'usinage des pièces moulées, avant éjection, dans la position d'éjection des demi-moules.According to another characteristic of the invention, the molding machine comprises two machining stations arranged on either side of a plate opposite the ejection assemblies secured to the other plate, adapted to allow carrying out machining operations of the molded parts, before ejection, in the ejection position of the half-molds.

Etant donné que pendant que deux demi- moules sont en position d'injection, au moins un autre demi-moule se trouve en position d'attente, décalé latéralement par rapport au plateau correspondant, de tels postes d'usinage permettent, dans cette position d'attente, d'accomplir facilement et avantageusement, avant éjection, toutes les opérations qui sont actuellement réalisées ultérieurement sur des machines annexes. En particulier, lorsque les broches sont particulièrement fragiles ou fragilisées du fait de leur position dans le moule, l'invention permet de les supprimer et de les remplacer par perçage en temps masqué, avant l'éjection de la pièce moulée, au moyen de têtes de perçage disposées au droit des postes d'éjection.Since while two half-molds are in the injection position, at least one other half-mold is in the standby position, offset laterally relative to the corresponding plate, such machining stations allow, in this position waiting, to easily and advantageously perform, before ejection, all the operations which are currently carried out subsequently on auxiliary machines. In particular, when the pins are particularly fragile or weakened due to their position in the mold, the invention makes it possible to remove them and replace them by drilling in masked time, before the ejection of the molded part, by means of heads. of drilling arranged at the right of the ejection stations.

En outre, en position d'éjection, et avant cette éjection, de même que pour les opérations de perçage, des opérations de lamage, taraudage et alésage des trous venant de fonderie peuvent être effectuées au moyen de têtes de lamage, taraudage et alésage. L'invention offre donc la possibilité de réaliser des travaux complémentaires, et ce sur l'ensemble des pièces en cas de multi-empreintes.In addition, in the ejection position, and before this ejection, as well as for the drilling operations, counterboring, tapping and reaming of the holes coming from the foundry can be carried out by means of countersinking heads, tapping and reaming. The invention therefore offers the possibility of carrying out additional work, and this on all of the parts in the case of multi-imprints.

Par ailleurs, on peut également procéder de façon aisée, dans cette position d'attente, à la pose d'inserts qui à l'heure actuelle s'avère délicate car réalisée dans l'espace restreint laissé entre les demi- moules en position d'ouverture.Furthermore, it is also easy to proceed, in this standby position, to the installation of inserts which at present proves to be delicate since it is carried out in the limited space left between the half-molds in position d 'opening.

Selon une autre caractéristique de l'invention, les moyens de guidage de chaque demi-moule jumelé le long du plateau associé, comportent deux glissières, haute et basse, faisant saillie frontalement par rapport audit plateau, et s 'étendant latéralement de part et d'autre de ce dernier sur une longueur équivalant à la course de la table-support, lesdites glissières étant agencées pour loger deux coulisseaux longitudinaux de forme conjuguée, ménagés en partie haute et en partie basse de chaque demi-moule, et la glissière haute comportant deux tronçons longitudinaux d'extrémité démontables de façon à permettre de retirer les demi-moules dans la position d'éjection de ces derniers.According to another characteristic of the invention, the means for guiding each half-mold paired along the associated plate, comprise two slides, high and low, projecting frontally with respect to said plate, and extending laterally on either side of the latter over a length equivalent to the stroke of the support table, said slides being arranged to accommodate two longitudinal slides of conjugate shape, formed in the upper part and in the lower part of each half-mold, and the upper slide comprising two longitudinal end sections which can be dismantled so as to allow the half-molds to be removed in the ejection position of the latter.

De telles glissières permettent de guider parfaitement les demi-moules jumelés lors des translations de la (ou des) table(s)-suppport(s) . De plus, elles permettent de contenir l'effort appliqué sur le moulage lors de l'éjection, faisant office de moyens de maintien des demi-moules en position d'éjection de ces derniers. De ce fait, la conception de ces glissières évite d'avoir à fixer le demi-moule en vue de contenir cet effort, au contraire des machines à mouler actuelles. En outre, le retrait d'un demi-moule jumelé en vue de son changement ou de toute autre opération est très aisé car il nécessite simplement de démonter un des tronçons d'extrémité de la glissière supérieure.Such slides make it possible to perfectly guide the twin half-molds during translations of the table (s) -support (s). In addition, they make it possible to contain the force applied to the molding during ejection, acting as means for holding the half-molds in the ejection position of the latter. Therefore, the design of these slides avoids having to fix the half-mold in order to contain this effort, unlike current molding machines. In addition, the removal of a semi-mold paired for its change or any other operation is very easy because it simply requires dismantling one of the end sections of the upper slide.

Selon une autre caractéristique de l'invention, la machine à mouler comprend des moyens de maintien provisoire de chaque demi-moule jumelé contre le plateau associé, comportant des doigts de verrouillage associés à des moyens de déplacement vertical solidaires dudit plateau, aptes à venir se loger dans des logements conjugués ménagés dans les faces inférieure et supérieure de chaque demi-moule jumelé.According to another characteristic of the invention, the molding machine comprises means for temporarily holding each semi-mold paired against the associated plate, comprising locking fingers associated with vertical displacement means integral with said plate, able to come lodge in conjugate housings provided in the lower and upper faces of each twin mold half.

De tels doigts de verrouillage ont pour fonction de maintenir en place ce demi-moule lors de l'ouverture dans l'éventualité où la poussée du vérin d'injection qui accompagne classiquement cette ouverture ferait défaut.The function of such locking fingers is to hold this half-mold in place during the opening in the event that the thrust of the injection jack which conventionally accompanies this opening is lacking.

De plus, chaque plateau associé à une table-support comporte avantageusement une paroi frontale dotée de logements incorporant un élément rétractable sollicité par des moyens élastiques, apte à solliciter les demi-moules selon une direction tendant à décoller ces derniers du plateau. Cette disposition a pour but d'assurer un décollage des demi-moules relativement au plateau après injection, replaçant ainsi ces demi-moules dans de bonnes conditions de translation.In addition, each tray associated with a support table advantageously has a front wall. provided with housings incorporating a retractable element urged by elastic means, capable of urging the mold halves in a direction tending to detach the latter from the plate. The purpose of this arrangement is to take off the half-molds relative to the plate after injection, thus replacing these half-molds in good translation conditions.

Selon une autre caractéristique de l'invention, la machine à mouler comprend, associée à chaque table-support, des moyens de butée élastique aptes à amortir ladite table-support en fin de course.According to another characteristic of the invention, the molding machine comprises, associated with each support table, elastic stop means capable of damping said support table at the end of the stroke.

De tels moyens de butée élastique assurent, en s'appuyant sur la table-support, d'une part, une fonction d'amortisseur de fin de course et, d'autre part, une fonction d'aide au démarrage.Such elastic stop means provide, by relying on the support table, on the one hand, a function of end of stroke damper and, on the other hand, a function of starting assistance.

A titre d'exemple, le temps de déplacement souhaité de la table-support étant de l'ordre de quelques secondes pour une distance de l'ordre du mètre et une charge transportée de l'ordre de plusieurs centaines de kilogrammes, de tels moyens de butée concourent à remplir cet objectif car ils participent à obtenir un couple de démarrage élevé et un amortissement important.For example, the desired travel time of the support table being of the order of a few seconds for a distance of the order of a meter and a transported load of the order of several hundred kilograms, such means of stop contribute to fulfill this objective because they participate in obtaining a high starting torque and a significant damping.

Il est à noter que de tels moyens de butée peuvent être associés à un cliquet commandé simultanément en vue d'éviter un effet de rebond, et également à des détecteurs de position permettant de situer exactement la position de la table-support et donc des demi-moules jumelés quelles que soient leurs dimensions. L'invention s'étend à un équipement pour machine à mouler classique comprenant en combinaison :It should be noted that such stop means can be associated with a pawl controlled simultaneously in order to avoid a rebound effect, and also with position detectors making it possible to locate the position of the support table and therefore half - twin molds whatever their dimensions. The invention extends to equipment for a conventional molding machine comprising in combination:

- associés à au moins un des plateaux mobile ou fixe :- associated with at least one of the mobile or fixed platforms:

. une table-support horizontale destinée à être disposée en porte-à-faux par rapport audit plateau, dotée de moyens de positionnement de deux demi- moules identiques, dits jumelés, adaptés pour que lesdits demi-moules soient disposés à distance l'un de l'autre, et alignés dans un plan parallèle à celui du plateau, lesdits moyens de positionnement consistant en des pions de centrage faisant saillie par rapport à la table-support et en des orifices de longueur supérieure à celle des pions de centrage selon un axe parallèle à l'axe de déplacement du plateau mobile, ménagés en sous-face des demi-moules jumelés et aptes à loger chacun un desdits pions de centrage,. a horizontal support table intended to be arranged in cantilever with respect to said plate, provided with means for positioning two identical half-molds, said to be paired, adapted so that said half-molds are arranged at a distance from one the other, and aligned in a plane parallel to that of the plate, said positioning means consisting of centering pins projecting relative to the support table and of orifices of length greater than that of the centering pins along an axis parallel to the axis moving the movable plate, arranged on the underside of the twin mold halves and each capable of accommodating one of said centering pins,

. des moyens de déplacement en translation de la table-support selon un mouvement alternatif orthogonal à la direction de déplacement du plateau mobile, adaptés pour amener alternativement l'un et l'autre des demi-moules jumelés soit en regard du plateau associé, dans une position dite d'injection, soit dans une position, dite d'éjection, décalée latéralement par rapport au plateau,. means for translational movement of the support table in an alternating movement orthogonal to the direction of movement of the movable plate, adapted to alternately bring one and the other of the twin mold halves opposite the associated plate, in a so-called injection position, or in a so-called ejection position, offset laterally relative to the plate,

. des moyens de guidage des demi- moules jumelés le long du plateau,. means for guiding the semi-molds twinned along the plate,

- des moyens de pulvérisation associés à chaque plateau fixe et mobile, et disposés de façon à assurer "à la volée" le nettoyage et la lubrification des demi-moules après extraction de la pièce moulée ou éjection du moulage, lors des déplacements en translation de chaque table-support. D'autres caractéristiques, buts et avantages de l'invention ressortiront de la description détaillée qui suit en référence aux dessins annexés qui en représentent à titre d'exemples non limitatifs trois modes de réalisation préférentiels. Sur ces dessins qui font partie intégrante de la présente description : la figure 1 est un schéma de principe d'un premier mode de réalisation de machine à mouler conforme à l'invention, la figure 2 est un schéma de principe d'un deuxième mode de réalisation de machine à mouler conforme à l'invention,- spraying means associated with each fixed and mobile plate, and arranged so as to ensure "on the fly" the cleaning and lubrication of the half-molds after extraction of the molded part or ejection of the mold, during translational movements of each support table. Other characteristics, objects and advantages of the invention will emerge from the detailed description which follows, with reference to the appended drawings which show, by way of non-limiting examples, three preferred embodiments. In these drawings which form an integral part of the present description: FIG. 1 is a block diagram of a first embodiment of a molding machine according to the invention, FIG. 2 is a block diagram of a second embodiment for making a molding machine according to the invention,

. la figure 3 est un schéma de principe d'un troisième mode de réalisation de machine à mouler conforme à l'invention,. Figure 3 is a block diagram of a third embodiment of a molding machine according to the invention,

. la figure 4 est une coupe longitudinale par un plan vertical A de la machine à mouler conforme au premier mode de réalisation, . la figure 5 en est une vue de dessus,. FIG. 4 is a longitudinal section through a vertical plane A of the molding machine according to the first embodiment,. FIG. 5 is a top view thereof,

. la figure 6 en est une vue latérale, . et la figure 7 en est une coupe transversale par un plan vertical B.. FIG. 6 is a side view thereof,. and Figure 7 is a cross section through a vertical plane B.

Les machines à mouler représentées schématiquement aux figures 1 à 3 comportent toutes trois classiquement un plateau fixe 1 , et un plateau mobile 2 apte à se déplacer relativement au plateau fixe 1.The molding machines shown diagrammatically in FIGS. 1 to 3 all conventionally comprise a fixed plate 1, and a movable plate 2 capable of moving relative to the fixed plate 1.

Selon l'invention, et dans le cas de la machine représentée à la figure 1 , le plateau fixe 1 porte un demi-moule fixe 3, tandis que le plateau mobile 2 est associé à une table-support 4 apte à se déplacer selon une direction orthogonale à la direction de déplacement dudit plateau mobile 2. De plus, cette table-support 4 porte deux demi-moules identiques 5, 6 disposés de façon à venir alternativement en regard du plateau mobile 2 lors des déplacements de ladite table-support 4.According to the invention, and in the case of the machine shown in FIG. 1, the fixed plate 1 carries a fixed half-mold 3, while the mobile plate 2 is associated with a support table 4 able to move according to a direction orthogonal to the direction of movement of said movable plate 2. In addition, this support table 4 carries two identical half-molds 5, 6 arranged so as to come alternately opposite the movable plate 2 during the movements of said support table 4 .

Selon le mode de réalisation représenté à la figure 2, le plateau mobile 2 porte un demi-moule fixe 7, tandis que le plateau fixe 1 est associé à une table-support 4 se déplaçant transversalement devant ledit plateau fixe. Comme précédemment, cette table-support 4 porte deux demi-moules identiques 8, 9 disposés de façon à venir alternativement en regard du plateau fixe 1 , lors des déplacements de ladite table-support. Enfin, selon le mode de réalisation représenté à la figure 3, les plateaux fixe 1 et mobile 2 sont tous deux associés à des tables-supports 10, 11 portant chacune deux demi-moules identiques 12, 13 et 14, 15, les deux paires de demi-moules 12, 13, et 14, 15 étant agencées symétriquement par rapport à l'axe longitudinal de la machine de façon à permettre des interventions sur les deux demi-moules (12, 15 en l'exemple) se trouvant en position d'éjection. Les figures 4 à 7 représentent de façon plus détaillée une machine à mouler conforme à celle représentée schématiquement à la figure 1.According to the embodiment shown in Figure 2, the movable plate 2 carries a fixed half-mold 7, while the fixed plate 1 is associated with a support table 4 moving transversely in front of said fixed plate. As before, this support table 4 carries two identical half-molds 8, 9 arranged so as to come alternately opposite the fixed plate 1, during the movements of said support table. Finally, according to the embodiment shown in FIG. 3, the fixed 1 and mobile 2 plates are both associated with support tables 10, 11 each carrying two identical half-molds 12, 13 and 14, 15, the two pairs of half-molds 12, 13, and 14, 15 being arranged symmetrically with respect to the longitudinal axis of the machine so as to allow interventions on the two half-molds (12, 15 in the example) being in position ejection. FIGS. 4 to 7 show in more detail a molding machine in accordance with that shown diagrammatically in FIG. 1.

Cette machine à mouler comporte, de façon classique, un bâti 16 monté sur un socle 57, et portant un plateau fixe 1 associé à des moyens d'injection 17 et doté de moyens de fixation (non représentés) d'un demi-moule fixe 3.This molding machine comprises, conventionally, a frame 16 mounted on a base 57, and carrying a fixed plate 1 associated with injection means 17 and provided with fixing means (not shown) of a fixed half-mold 3.

Elle comprend, en outre, un plateau mobile 2 guidé le long de quatre colonnes, telles que 18, et associé à des moyens d'entraînement en translation aptes à le déplacer relativement au plateau fixe 1.It further comprises a movable plate 2 guided along four columns, such as 18, and associated with translation drive means able to move it relative to the fixed plate 1.

Selon l'invention, chacun de ces plateaux fixe 1 et mobile 2 est équipé d'un cadre 19, 20 le prolongeant de part et d'autre d'environ 1 mètre.According to the invention, each of these fixed 1 and mobile 2 plates is equipped with a frame 19, 20 extending it on either side by approximately 1 meter.

Le cadre 20 associé au plateau mobile 2 a pour but d'une part de soutenir, hors bâti machine 16, un châssis 21 supportant une table de translation 22, et d'autre part de recevoir deux ensembles d'éjection. Le cadre 19 associé au plateau fixe 1 a pour but de porter des postes d'usinage. De plus, ce cadre 19 est supporté, vers chacune de ses extrémités, par un montant s'étendant entre ledit cadre et le socle 57 et solidarisé à ces derniers, et dont la fonction est d'assurer la stabilité transversale de ce cadre 19.The purpose of the frame 20 associated with the movable plate 2 is on the one hand to support, outside the machine frame 16, a chassis 21 supporting a translation table 22, and on the other hand to receive two ejection assemblies. The frame 19 associated with the fixed plate 1 aims to carry machining stations. In addition, this frame 19 is supported, towards each of its ends, by an upright extending between said frame and the base 57 and secured to the latter, and the function of which is to ensure the transverse stability of this frame 19.

Tel que représenté à la figure 4, ces cadres 19, 20 sont réalisés à partir de profilés tubulaires.As shown in Figure 4, these frames 19, 20 are made from tubular profiles.

Le châssis 21 est quant à lui constitué d'un caisson nervure en acier mécanosoudé relié au plateau mobile 2 et au cadre 20 par vissage sur ceux-ci, et agencé de façon à s'étendre en porte-à-faux par rapport au plan desdits plateau mobile et armature. Ce châssis 21 repose, en outre, sur le bâti machine 16 par l'intermédiaire de patins de glissement réglables 21a identiques à ceux équipant classiquement le plateau mobile 2, et se déplaçant sur les surfaces de glissement 16a du bâti machine 16 utilisées pour le déplacement dudit plateau mobile. Ce châssis 21 est, en outre, doté de réservations permettant le passage des colonnes de guidage 18 du plateau mobile 2.The chassis 21 is itself made up of a ribbed box of mechanically welded steel connected to the movable plate 2 and to the frame 20 by screwing thereon, and arranged so as to extend in overhang relative to the plane said movable plate and frame. This chassis 21 rests, moreover, on the machine frame 16 by means of adjustable sliding pads 21a identical to those conventionally fitted to the movable plate 2, and moving on the sliding surfaces 16a of the machine frame 16 used for displacement of said movable plate. This chassis 21 is also provided with reservations allowing the passage of the guide columns 18 of the movable plate 2.

La partie supérieure de ce châssis 21 porte deux rails de guidage à rouleaux, tels que 24, s'étendant longitudinalement sur ledit châssis.The upper part of this chassis 21 carries two roller guide rails, such as 24, extending longitudinally on said chassis.

La table de translation 22 présente des dimensions définies en fonction des dimensions standard de moules, de façon à pouvoir porter deux demi-moules 5, 6. A cet effet, cette table 22 comporte des pions de centrage tels que 23 de forme oblongue, faisant saillie sur ledit plateau, et disposés avec un entr'axe standard adapté pour que chaque pion vienne se loger dans un orifice tel que 5a ménagé en sous-face des demi- moules 5, 6. Ces orifices 5a présentent, en outre, une forme allongée de longueur supérieure à celle des pions 23 selon un axe parallèle à l'axe de déplacement du plateau mobile 2, de façon à permettre un ajustement de la position du demi-moule 5, 6 lors de la fermeture de la machine. En vue de sa translation, la table de translation 22 comporte, en sous-face, des patins à bille tels que 25 aptes à coopérer avec les rails de guidage 24.The translation table 22 has dimensions defined as a function of the standard dimensions of molds, so as to be able to carry two half-molds 5, 6. For this purpose, this table 22 includes centering pins such as 23 of oblong shape, making protrusion on said plate, and arranged with a standard spacing adapted so that each pin comes to be housed in an orifice such as 5a formed on the underside of the half-molds 5, 6. These orifices 5a also have a shape elongated with a length greater than that of the pins 23 along an axis parallel to the axis of movement of the movable plate 2, so as to allow an adjustment of the position of the half-mold 5, 6 when the machine is closed. In view of its translation, the translation table 22 comprises, on the underside, ball pads such as 25 capable of cooperating with the guide rails 24.

Les moyens d'entraînement en translation de cette table 22 comprennent un système de vis sans fin/écrou 26, ladite vis sans fin étant entraînée en rotation au moyen d'un moteur 27 et d'un réducteur à courroie 28.The translational drive means of this table 22 comprise a worm / nut 26 system, said worm being driven in rotation by means of a motor 27 and a belt reducer 28.

De plus, des moyens de butée élastique, tels que 29, consistant par exemple en des vérins de faible course, sont adaptés pour servir de butoir à la table de translation 22 en fin de déplacement de cette dernière.In addition, elastic stop means, such as 29, consisting for example of short stroke jacks, are adapted to serve as a stop for the translation table 22 at the end of movement of the latter.

Ces butoirs 29, outre leur fonction d'amortisseurs de fin de course, ont également une fonction d'aide au démarrage de la table de translation. Le cadre 20 associé au plateau mobile 2 porte, en outre, deux ensembles d'éjection disposés de part et d'autre dudit plateau et comportant chacun au moins un vérin d'éjection tel que 30 disposé horizontalement et, montées sur la tige de ce vérin 30, une pluralité de queues d'éjection, telles que 31, dont le nombre et la disposition sont adaptés, de façon classique, au moulage à réaliser.These buffers 29, in addition to their function of end-of-travel dampers, also have a function of assistance in starting the translation table. The frame 20 associated with the movable plate 2 carries, in addition, two ejection assemblies arranged on either side of said plate and each comprising at least one ejection cylinder such as 30 disposed horizontally and, mounted on the rod of this cylinder 30, a plurality of ejection tails, such as 31, the number and arrangement of which are adapted, in a conventional manner, to the molding to be produced.

Le plateau mobile 2 comporte, en outre, des moyens de guidage des demi-moules 5, 6 et de maintien de ces derniers dans leur position d'éjection.The movable plate 2 further comprises means for guiding the half-molds 5, 6 and for holding the latter in their ejection position.

Ces moyens de guidage et de maintien comprennent deux pièces 32, 33 de guidage supérieur et inférieur solidaires de la face frontale 2a du plateau mobile, et formant chacune un becquet 32a, 33a, orienté respectivement vers le bas et vers le haut. Ces becquets 32a, 33a de section rectangulaire sont adaptés pour délimiter une gorge de guidage 34, 35, avec la face frontale 2a du plateau, et comportent, en regard de ladite face frontale, une face arrière revêtue d'un matériau de glissement 36.These guiding and holding means comprise two parts 32, 33 for upper and lower guide secured to the front face 2a of the movable plate, and each forming a spoiler 32a, 33a, oriented respectively downwards and upwards. These spoilers 32a, 33a of rectangular section are adapted to delimit a guide groove 34, 35, with the front face 2a of the plate, and comprise, opposite said front face, a rear face coated with a sliding material 36.

De plus, ces pièces de guidage 32, 33 s'étendent sur une longueur équivalant à la longueur des cadres 19 et 20. En outre, la pièce de guidage supérieur 32 est scindée longitudinalement en trois tronçons : un tronçon central fixe 32a et deux tronçons d'extrémité tels que 32b, disposés à l'aplomb des ensembles d'éjection 30, démontables, destinés à permettre de changer les demi- moules jumelés 5, 6. En vue de leur guidage, les demi-moules 5,In addition, these guide pieces 32, 33 extend over a length equivalent to the length of the frames 19 and 20. In addition, the upper guide piece 32 is split longitudinally into three sections: a fixed central section 32a and two sections ends such as 32b, arranged vertically above the removable ejection assemblies 30, intended to allow the twin half-molds 5, 6 to be changed. With a view to guiding them, the half-molds 5,

6 comportent, quant à eux, deux rainures 37, 38 ménagées dans les faces inférieure et supérieure desdits demi- moules, et agencées pour loger chacune un becquet 32a, 33a.6 comprise, in turn, two grooves 37, 38 formed in the lower and upper faces of said half-molds, and arranged to each accommodate a spoiler 32a, 33a.

Par ailleurs, le plateau mobile 2 comporte des moyens de maintien provisoire des demi-moules 5, 6 aptes à maintenir lesdits demi-moules plaqués contre la face frontale 2a dudit plateau.Furthermore, the movable plate 2 comprises means for temporarily holding the half-molds 5, 6 able to hold said half-molds pressed against the front face 2a of said plate.

Ces moyens de maintien consistent en des doigts de verrouillage tels que 39, 40 portés par des vérins tels que 41 aptes à les déplacer verticalement, lesdits doigts de verrouillage étant disposés de façon à coopérer avec des logements conjugués tels que 42, ménagés dans les faces inférieure et supérieure des demi- moules 5 , 6 .These holding means consist of locking fingers such as 39, 40 carried by jacks such as 41 able to move them vertically, said locking fingers being arranged so as to cooperate with conjugate housings such as 42, formed in the faces. lower and upper half molds 5, 6.

En outre, ces doigts de verrouillage 39, 40 présentent une section trapézoïdale adaptée pour engendrer un recul de demi-moules 5, 6 en direction du plateau mobile 2, au fur et à mesure de l'introduction de ces doigts dans les logements 42, 43 en vis-à-vis desdits demi- moules.In addition, these locking fingers 39, 40 have a trapezoidal section adapted to generate a retreat of half-molds 5, 6 in the direction of the movable plate 2, as and when these fingers are introduced into the housings 42, 43 vis-à-vis said half-molds.

A noter qu'en raison de cette latitude de déplacement des demi-moules 5, 6 relativement à la table de translation 22, cette dernière est revêtue d'un matériau de glissement 44.Note that due to this latitude of movement of the half-molds 5, 6 relative to the translation table 22, the latter is coated with a sliding material 44.

Le plateau mobile 2 comporte, en outre, des logements tels que 45 ménagés dans sa face frontale, logeant une bille 46 associée à un ressort 47 agencé pour solliciter ladite bille de façon qu'elle assure le décollage des demi-moules 5, 6 relativement audit plateau, une fois les doigts de verrouillage 39, 40 rétractés, de façon à replacer lesdits demi-moules dans de bonnes conditions de translation. La table de translation 22 porte, par ailleurs, une rampe de pulvérisation verticale 48 disposée de façon à se trouver entre les deux demi-moules 5, 6 et adaptée pour assurer le nettoyage et la lubrification du demi-moule fixe 3, lors du déplacement de cette table de translation.The movable plate 2 further comprises housings such as 45 formed in its front face, housing a ball 46 associated with a spring 47 arranged to urge said ball so that it takes off the half-molds 5, 6 relatively to said plate, once the locking fingers 39, 40 retracted, so as to replace said half-molds in good translation conditions. The translation table 22 carries, moreover, a vertical spraying ramp 48 arranged so as to be between the two half-molds 5, 6 and adapted to ensure the cleaning and the lubrication of the fixed half-mold 3, during movement. of this translation table.

Cette table de translation 22 comporte, de plus, deux volets de protection amovibles 49, 50 disposés chacun au-dessus d'une extrémité de ladite table et destinés à assurer une protection contre les projections accidentelles de matériau lors de l'injection.This translation table 22 further comprises two removable protective flaps 49, 50 each disposed above one end of said table and intended to provide protection against accidental projections of material during injection.

Le cadre 19 porte, également, deux rampes de pulvérisation 53, 54 disposées de part et d'autre du plateau fixe 1 et adaptées pour assurer le nettoyage et la lubrification des demi-moules 5, 6, lorsque ces derniers se déplacent vers leur position d'injection.The frame 19 also carries two spray bars 53, 54 arranged on either side of the fixed plate 1 and adapted to ensure the cleaning and the lubrication of the half-molds 5, 6, when the latter move towards their position. injection.

A noter que ces deux rampes de pulvérisation 53, 54 peuvent être éventuellement complétées par des rampes adaptées pour parfaire le nettoyage et la lubrification des demi-moules 5, 6 après éjection, et avant la translation de ces derniers.Note that these two spray booms 53, 54 may possibly be supplemented by booms adapted to perfect the cleaning and the lubrication of the mold halves 5, 6 after ejection, and before the translation of the latter.

Ce cadre 19 porte, enfin, deux postes d'usinage 55, 56 (taraudeuse, perceuse...) disposés de façon à se trouver en regard des demi-moules 5, 6, dans la position d'éjection de ces derniers.This frame 19 carries, finally, two machining stations 55, 56 (tapping machine, drill ...) arranged so as to be located opposite the half-molds 5, 6, in the ejection position of the latter.

En dernier lieu, la machine à mouler selon l'invention est équipée de potences tournantes telles que schématisées en 57 disposées de part et d'autre de celle-ci en vue de permettre de changer les demi-moules 5, 6 disposés dans leur position d'éjection, et le demi-moule fixe 3.Finally, the molding machine according to the invention is equipped with rotating brackets as shown diagrammatically at 57 arranged on either side thereof in order to allow the mold halves 5, 6 arranged in their position to be changed. ejection, and the fixed half-mold 3.

La machine à mouler telle que ci-dessus décrite permet de réaliser les opérations d'éjection des moulages, d'évacuation de ces derniers, de nettoyage et de lubrification des demi-moules 3, 5, 6 en temps masqué. En effet, pendant qu'un demi-moule 5, 6 est en position d'injection, l'autre demi-moule 6, 5 est en position d'éjection. De plus, les opérations de nettoyage et de lubrification s'opèrent, pour les demi-moules 5, 6, après éjection lors de leur déplacement, au moyen des rampes 53,The molding machine as described above makes it possible to carry out the operations of ejection of the molds, evacuation of the latter, cleaning and lubrication of the half-molds 3, 5, 6 in masked time. Indeed, while one half-mold 5, 6 is in the injection position, the other half-mold 6, 5 is in the ejection position. In addition, the cleaning and lubrication operations take place, for the half-molds 5, 6, after ejection during their movement, by means of the ramps 53,

54. Pour le demi-moule fixe 3, ce nettoyage et cette lubrification s'opèrent lors du déplacement de la table de translation 22, lorsque la rampe 48 passe devant ledit demi-moule.54. For the fixed half-mold 3, this cleaning and this lubrication take place during the displacement of the translation table 22, when the ramp 48 passes in front of said half-mold.

Cette conception permet un gain notable sur le temps d'un cycle de production. A titre d'exemple, le temps d'un cycle peut être réduit sensiblement de moitié par rapport aux machines actuelles.This design allows a significant saving on the time of a production cycle. For example, the time of a cycle can be reduced significantly by half compared to current machines.

Il est également important de signaler que dans la position d'éjection des demi-moules 5, 6 de nombreux travaux peuvent facilement être accomplis tels que perçage, taraudage, découpe, pose d'inserts... It is also important to point out that in the ejection position of the half-molds 5, 6 many works can easily be accomplished such as drilling, tapping, cutting, fitting inserts ...

Claims

REVENDICATIONS 1 / - Machine à mouler pour la réalisation de pièces moulées sous pression ou par poussée d'un matériau, comportant : - un plateau fixe (1) et un plateau mobile (2), CLAIMS 1 / - Molding machine for making parts molded under pressure or by pushing a material, comprising: - a fixed plate (1) and a movable plate (2), - des moyens de déplacement du plateau mobile (2) relativement au plateau fixe (1),means for moving the movable plate (2) relative to the fixed plate (1), - deux demi-moules (3, 6 ; 7, 9 ; 13, 14) associés chacun à un plateau (1, 2) et adaptés pour constituer un moule après fermeture,- two half-molds (3, 6; 7, 9; 13, 14) each associated with a plate (1, 2) and adapted to constitute a mold after closing, - jumelé avec au moins un des demi-moules (6 ; 9 ; 13, 14), un demi-moule (5 ; 8 ; 12, 15) identique audit demi-moule, disposé à distance et dans l'alignement de ce dernier, selon un plan parallèle à celui du plateau associé (1 , 2) ,- combined with at least one of the half-molds (6; 9; 13, 14), a half-mold (5; 8; 12, 15) identical to said half-mold, placed at a distance and in alignment with the latter , according to a plane parallel to that of the associated plate (1, 2), - des moyens de déplacement en translation de chaque paire de demi-moules jumelés (5, 6 ; 8, 9 ; 12-13, 14-15) selon un mouvement alternatif orthogonal à la direction de déplacement du plateau mobile (2), adaptés pour amener alternativement l'un et l'autre desdits demi- moules jumelés soit en regard du plateau (1, 2) associé dans une position, dite d'injection, soit dans une position, dite d'éjection, décalée latéralement par rapport audit plateau, ladite machine à mouler étant caractérisée en ce qu'elle comprend :- means for translational movement of each pair of twin half-molds (5, 6; 8, 9; 12-13, 14-15) according to an alternative movement orthogonal to the direction of movement of the movable plate (2), adapted for alternately bringing one and the other of said semi-molds either opposite the associated plate (1, 2) in a position, called injection, or in a position, called ejection, offset laterally with respect to said tray, said molding machine being characterized in that it comprises: - associé à chaque plateau (1, 2) équipé de deux demi-moules jumelés (5, 6 ; 8, 9 ; 12-13, 14-15) : . une table-support horizontale- associated with each tray (1, 2) equipped with two twin half-molds (5, 6; 8, 9; 12-13, 14-15):. a horizontal support table (4 ; 10, 11) disposée en porte-à-faux par rapport audit plateau et adaptée pour porter les demi-moules jumelés (5, 6 ; 8, 9 ; 12-13, 14-15), ladite table-support et lesdits demi-moules jumelés comportant des moyens de positionnement consistant en des pions de centrage (23) faisant saillie par rapport à la table-support (4 ; 10, 11), et en des orifices (5a) de longueur supérieure à celle des pions de centrage (23) selon un axe parallèle à l'axe de déplacement du plateau mobile (2), ménagés en sous-face des demi-moules jumelés (5, 6 ; 8, 9 ; 12-13, 14-15) et aptes à loger chacun un desdits pions de centrage (23),(4; 10, 11) arranged in cantilever with respect to said plate and adapted to carry the twin half-molds (5, 6; 8, 9; 12-13, 14-15), said support table and said twin half-molds comprising positioning means consisting of centering pins (23) projecting relative to the support table (4; 10, 11), and in orifices (5a) of length greater than that of the pins centering (23) along an axis parallel to the axis of movement the movable plate (2), arranged on the underside of the twin half-molds (5, 6; 8, 9; 12-13, 14-15) and capable of accommodating each of one of said centering pins (23), . des moyens (24-28) de déplacement en translation de la table-support (4 ; 10, 11) selon un mouvement alternatif orthogonal à la direction de déplacement du plateau mobile (2),. means (24-28) for translational movement of the support table (4; 10, 11) in an alternating movement orthogonal to the direction of movement of the movable plate (2), . et des moyens de guidage (32, 33) des demi-moules jumelés (5, 6 ; 8, 9 ; 12-13, 14-15) le long du plateau (1, 2) associé,. and means for guiding (32, 33) the twin half-molds (5, 6; 8, 9; 12-13, 14-15) along the associated plate (1, 2), - des moyens de pulvérisation (48, 53, 54 ; 48) associés à chaque plateau fixe (1) et mobile (2), et disposés de façon à assurer "à la volée" le nettoyage et la lubrification des demi-moules (3, 5, 6 ; 7-9 ; 12-15) après extraction de la pièce moulée ou éjection du moulage, lors des déplacements en translation de chaque table-support- spraying means (48, 53, 54; 48) associated with each fixed (1) and mobile (2) plate, and arranged so as to ensure "on the fly" the cleaning and lubrication of the half-molds (3 , 5, 6; 7-9; 12-15) after extraction of the molded part or ejection of the molding, during translational movements of each support table (4 ; 10, 11).(4; 10, 11). 2/ - Machine à mouler selon la revendication 1 comprenant une seule table-support (4) associée à un des plateaux fixe (1) ou mobile (2), caractérisée en ce que les moyens de pulvérisation comprennent :2 / - Molding machine according to claim 1 comprising a single support table (4) associated with one of the fixed (1) or mobile (2) plates, characterized in that the spraying means comprise: - au moins une rampe de pulvérisation (48) portée par la table-support (4) associée au plateau fixe (1) ou mobile (2) et disposée de façon à être positionnée entre les demi-moules jumelés (5, 6 ; 8, 9),- at least one spraying boom (48) carried by the support table (4) associated with the fixed (1) or mobile (2) plate and arranged so as to be positioned between the twin half-molds (5, 6; 8 , 9), - au moins deux rampes de pulvérisation (53, 54) disposées de part et d'autre de l'autre plateau mobile (2) ou fixe (1). 3/ - Machine à mouler selon la revendication 2 dans laquelle la table-support (4) est associée au plateau fixe (1).- At least two spray bars (53, 54) arranged on either side of the other mobile (2) or fixed (1) plate. 3 / - Molding machine according to claim 2 wherein the support table (4) is associated with the fixed plate (1). 4/ - Machine à mouler selon la revendication 2 dans laquelle la table-support (4) est associée au plateau mobile (2).4 / - Molding machine according to claim 2 wherein the support table (4) is associated with the movable plate (2). 5/ - Machine à mouler selon la revendication 1 comprenant deux tables-supports (10, 11), chacune associée à un des plateaux fixe (1) et mobile (2), adaptées pour être déplacées en synchronisme, caractérisée en ce que les moyens de pulvérisation comprennent, pour chacune desdites tables-supports, au moins une rampe de pulvérisation (48) portée par cette dernière et disposée de façon à être positionnée entre les demi-moules jumelés (12-13, 14-15).5 / - Molding machine according to claim 1 comprising two support tables (10, 11), each associated with one of the fixed (1) and mobile (2) plates, adapted to be moved in synchronism, characterized in that the spraying means comprise, for each of said support tables, at least one spraying boom (48) carried by the latter and arranged so as to be positioned between the twin mold halves (12-13, 14-15). 6/ - Machine à mouler selon l'une des revendications précédentes, caractérisée en ce qu'elle comprend : - deux ensembles d'éjection (30, 31) du moulage solidarisés à un plateau (1, 2) doté d'une table- support (4 ; 10, 11), et disposés de part et d'autre dudit plateau de façon à se trouver chacun en regard d'un demi- moule jumelé (5, 6 ; 8, 9 ; 12-15) dans sa position d'éjection,6 / - Molding machine according to one of the preceding claims, characterized in that it comprises: - two ejection assemblies (30, 31) of the molding secured to a plate (1, 2) provided with a table- support (4; 10, 11), and arranged on either side of said plate so as to be each facing a twin half-mold (5, 6; 8, 9; 12-15) in its position ejection, - des moyens de maintien (32, 33) de chaque demi-moule jumelé (5, 6 ; 8, 9 ; 12-15), dans la position d'éjection de ce dernier.- holding means (32, 33) of each twin half-mold (5, 6; 8, 9; 12-15), in the ejection position of the latter. 7/ - Machine à mouler selon la revendication 6 caractérisée en ce qu'elle comprend deux postes d'usinage (55, 56) disposés de part et d'autre d'un plateau (1) en regard des ensembles d'éjection (30, 31) solidaires de l'autre plateau (2), adaptés pour permettre d'effectuer des opérations d'usinage des pièces moulées, avant éjection, dans la position d'éjection des demi- moules.7 / - Molding machine according to claim 6 characterized in that it comprises two machining stations (55, 56) arranged on either side of a plate (1) opposite the ejection assemblies (30 , 31) integral with the other plate (2), adapted to allow machining operations to be carried out on the molded parts, before ejection, in the ejection position of the half-molds. 8/ - Machine à mouler selon l'une des revendications précédentes caractérisée en ce que les moyens de guidage (32, 33) de chaque demi-moule jumelé (5, 6) le long du plateau (2) associé, comportent deux glissières (32, 33), haute et basse, faisant saillie frontalement par rapport audit plateau, et s'étendant latéralement de part et d'autre de ce dernier sur une longueur équivalant à la course de la table-support (4 ; 10, 11), lesdites glissières étant agencées pour loger deux coulisseaux longitudinaux de forme conjuguée, ménagés en partie haute et en partie basse de chaque demi-moule (5; 6), et la glissière haute (32) comportant deux tronçons longitudinaux d'extrémité (32b) démontables de façon permettre de retirer les demi-moules dans la positio d'éjection de ces derniers.8 / - Molding machine according to one of the preceding claims, characterized in that the guide means (32, 33) of each twin half-mold (5, 6) along the associated plate (2), comprise two slides ( 32, 33), high and low, projecting frontally with respect to said plate, and extending laterally on either side of the latter over a length equivalent to the stroke of the support table (4; 10, 11) , said slides being arranged to accommodate two longitudinal slides of conjugate shape, formed in the upper part and in the lower part of each half-mold (5; 6), and the upper slide (32) comprising two sections longitudinal end (32b) removable so as to allow the half-molds to be removed in the ejection position of the latter. 9/ - Machine à mouler selon l'une de revendications précédentes caractérisée en ce qu'ell comprend des moyens de maintien provisoire de chaque demi moule jumelé (5, 6) contre le plateau (2) associé, comportant des doigts de verrouillage (39, 40) associés des moyens de déplacement vertical (41) solidaires dudi plateau, aptes à venir se loger dans des logement conjugués (42) ménagés dans les faces inférieure e supérieure de chaque demi-moule jumelé (5, 6).9 / - Molding machine according to one of the preceding claims, characterized in that it comprises means for temporarily holding each twin half-mold (5, 6) against the associated plate (2), comprising locking fingers (39 , 40) associated with vertical displacement means (41) integral with said plate, capable of being housed in conjugate housings (42) formed in the lower e upper faces of each twin half-mold (5, 6). 10/ - Machine à mouler selon l'une de revendications 8 ou 9, caractérisée en ce que chaqu plateau (2) associé à une table-support (4) comporte un paroi frontale (2a) dotée de logements (45) incorporant u élément rétractable (46) sollicité par des moyens élastiques (47), apte à solliciter les demi-moules (5, 6) selon une direction tendant à décoller ces derniers du plateau (2) .10 / - Molding machine according to one of claims 8 or 9, characterized in that each plate (2) associated with a support table (4) has a front wall (2a) provided with housings (45) incorporating an element retractable (46) urged by elastic means (47), able to urge the half-molds (5, 6) in a direction tending to detach the latter from the plate (2). 11/ - Machine à mouler selon l'une des revendications précédentes caractérisée en ce qu'elle comprend, associés à chaque table-support (4), des moyens de butée élastique (29) aptes à amortir ladite table- support en fin de course.11 / - Molding machine according to one of the preceding claims, characterized in that it comprises, associated with each support table (4), elastic stop means (29) capable of damping said support table at the end of the stroke. . 12/ - Equipement pour machine à mouler destinée à la réalisation de pièces moulées sous pression ou par poussée d'un matériau, ledit équipement étant caractérisé en qu'il comprend : - associés à au moins un des plateaux mobile (2) ou fixe (1) :12 / - Equipment for a molding machine intended for the production of parts molded under pressure or by pushing a material, said equipment being characterized in that it comprises: - associated with at least one of the mobile (2) or fixed ( 1): . une table-support horizontale (4 ; 10, 11) destinée à être disposée en porte-à-faux par rapport audit plateau, dotée de moyens de positionnement (23) de deux demi-moules identiques (5, 6 ; 8, 9 ; 12-15), dits jumelés, adaptés pour que lesdits demi-moules soient disposés à distance l'un de l'autre, et alignés dans un plan parallèle à celui du plateau, lesdits moyens de positionnement consistant en des pions de centrage (23) faisant saillie par rapport à la table-support (4 ; 10, 11), et en des orifices (5a) de longueur supérieure à celle des pions de centrage (23) selon un axe parallèle à l'axe de déplacement du plateau mobile (2), ménagés en sous-face des demi-moules jumelés (5, 6 ; 8, 9 ; 12-13, 14-15) et aptes à loger chacun un desdits pions de centrage (23),. a horizontal support table (4; 10, 11) intended to be cantilevered with respect to said plate, provided with positioning means (23) of two identical half-molds (5, 6; 8, 9; 12-15), called twin, adapted so that said half-molds are arranged at a distance from each other, and aligned in a plane parallel to that of the plate, said means of positioning consisting of centering pins (23) projecting relative to the support table (4; 10, 11), and of orifices (5a) of length greater than that of the centering pins (23) along a parallel axis to the axis of movement of the movable plate (2), formed on the underside of the twin half-molds (5, 6; 8, 9; 12-13, 14-15) and able to each house one of said centering pins (23), . des moyens (24-28) de déplacement en translation de la table-support (4 ; 10, 11) selon un mouvement alternatif orthogonal à la direction de déplacement du plateau mobile (2), adaptés pour amener alternativement l'un et l'autre des demi-moules jumelés (5, 6 ; 8, 9 ; 12-15) soit en regard du plateau associé (1, 2), dans une position dite d'injection, soit dans une position, dite d'éjection, décalée latéralement par rapport au plateau,. means (24-28) for translational movement of the support table (4; 10, 11) in an alternating movement orthogonal to the direction of movement of the movable plate (2), adapted to alternately bring one and the other of the semi-molds (5, 6; 8, 9; 12-15) either opposite the associated plate (1, 2), in a position called injection, or in a position, called ejection, offset laterally with respect to the plate, . des moyens de guidage (32, 33) des demi-moules jumelés (5, 6 ; 8, 9 ; 12-15) le long du plateau (1 , 2) , - des moyens de pulvérisation (48, 53, 54 ;. means for guiding (32, 33) twin semi-molds (5, 6; 8, 9; 12-15) along the plate (1, 2), - spraying means (48, 53, 54; 48) associés à chaque plateau fixe (1) et mobile (2), et disposés de façon à assurer "à la volée" le nettoyage et la lubrification des demi-moules (3, 5, 6 ; 7-9 ; 12-15) après extraction de la pièce moulée ou éjection du moulage, lors des déplacements en translation de chaque table-support (4 ; 10, 11). 48) associated with each fixed (1) and mobile (2) plate, and arranged so as to ensure "on the fly" the cleaning and lubrication of the half-molds (3, 5, 6; 7-9; 12-15 ) after extracting the molded part or ejecting the mold, during translational movements of each support table (4; 10, 11).
PCT/FR1995/000956 1994-07-21 1995-07-18 Moulding machine for the production of pressure or push moulded articles and equipment for such moulding machines Ceased WO1996003266A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP95925896A EP0771261A1 (en) 1994-07-21 1995-07-18 Moulding machine for the production of pressure or push moulded articles and equipment for such moulding machines
AU29848/95A AU2984895A (en) 1994-07-21 1995-07-18 Moulding machine for the production of pressure or push moulded articles and equipment for such moulding machines

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9409143A FR2722714B1 (en) 1994-07-21 1994-07-21 MOLDING MACHINE FOR PRODUCING PRESSURE OR PUSH MOLDED PARTS OF MATERIAL, AND EQUIPMENT FOR SUCH MOLDING MACHINES
FR94/09143 1994-07-21

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WO1996003266A1 true WO1996003266A1 (en) 1996-02-08

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PCT/FR1995/000956 Ceased WO1996003266A1 (en) 1994-07-21 1995-07-18 Moulding machine for the production of pressure or push moulded articles and equipment for such moulding machines

Country Status (5)

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EP (1) EP0771261A1 (en)
AU (1) AU2984895A (en)
CA (1) CA2194693A1 (en)
FR (1) FR2722714B1 (en)
WO (1) WO1996003266A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6652064B2 (en) 2000-04-20 2003-11-25 Hewlett-Packard Development Company, L.P. Method for improving image quality on plots
DE102018221309B4 (en) 2018-07-31 2021-10-07 Nichietsu Inc. Mold transport guide device in an injection molding machine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3091809A (en) * 1960-12-22 1963-06-04 Trueblood Inc Plastic injection machine
DE2062432A1 (en) * 1969-12-23 1971-07-01 Int Press Dev Est Injection molding machine with multiple molds for compression molding of rubber and plastic articles and the like
DE2849604A1 (en) * 1978-11-15 1980-05-29 Linde Ag Continuous prodn. of injection mouldings with inserts - in which first moulding cools while second is injected and third insert loaded
US4379685A (en) * 1980-02-05 1983-04-12 Canyon Corporation Injection molding machine
EP0536883A1 (en) * 1991-10-10 1993-04-14 Gencorp Inc. Injection molding machine and shuttle assembly thereof
JPH0615684A (en) * 1992-01-31 1994-01-25 Victor Co Of Japan Ltd Mold apparatus for injection molding of disk

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3091809A (en) * 1960-12-22 1963-06-04 Trueblood Inc Plastic injection machine
DE2062432A1 (en) * 1969-12-23 1971-07-01 Int Press Dev Est Injection molding machine with multiple molds for compression molding of rubber and plastic articles and the like
DE2849604A1 (en) * 1978-11-15 1980-05-29 Linde Ag Continuous prodn. of injection mouldings with inserts - in which first moulding cools while second is injected and third insert loaded
US4379685A (en) * 1980-02-05 1983-04-12 Canyon Corporation Injection molding machine
EP0536883A1 (en) * 1991-10-10 1993-04-14 Gencorp Inc. Injection molding machine and shuttle assembly thereof
JPH0615684A (en) * 1992-01-31 1994-01-25 Victor Co Of Japan Ltd Mold apparatus for injection molding of disk

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 18, no. 220 (M - 1595) 20 April 1994 (1994-04-20) *
PATENT ABSTRACTS OF JAPAN vol. 4, no. 57 (M - 9)<539> 26 April 1980 (1980-04-26) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6652064B2 (en) 2000-04-20 2003-11-25 Hewlett-Packard Development Company, L.P. Method for improving image quality on plots
DE102018221309B4 (en) 2018-07-31 2021-10-07 Nichietsu Inc. Mold transport guide device in an injection molding machine
US11220031B2 (en) 2018-07-31 2022-01-11 Nichietsu Inc. Mold conveyance guide apparatus in injection molding machine

Also Published As

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FR2722714A1 (en) 1996-01-26
CA2194693A1 (en) 1996-02-08
FR2722714B1 (en) 1996-08-30
AU2984895A (en) 1996-02-22
EP0771261A1 (en) 1997-05-07

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