EP3302852B1 - Système d'injection de canal chauffant pour un moule de coulée sous pression - Google Patents

Système d'injection de canal chauffant pour un moule de coulée sous pression Download PDF

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Publication number
EP3302852B1
EP3302852B1 EP16727995.9A EP16727995A EP3302852B1 EP 3302852 B1 EP3302852 B1 EP 3302852B1 EP 16727995 A EP16727995 A EP 16727995A EP 3302852 B1 EP3302852 B1 EP 3302852B1
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EP
European Patent Office
Prior art keywords
feed
sprue
block
exit
mold
Prior art date
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Active
Application number
EP16727995.9A
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German (de)
English (en)
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EP3302852A1 (fr
Inventor
Marc Nowak
Norbert Erhard
Ronny Aspacher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oskar Frech GmbH and Co KG
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Oskar Frech GmbH and Co KG
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Publication of EP3302852A1 publication Critical patent/EP3302852A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
    • B22D17/2272—Sprue channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
    • B22C9/082—Sprues, pouring cups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
    • B22D17/2209—Selection of die materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
    • B22D17/2218—Cooling or heating equipment for dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/32—Controlling equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
    • B22D17/2227—Die seals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D18/00—Pressure casting; Vacuum casting
    • B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould

Definitions

  • the invention relates to a hot runner gating system and die assembly, the gating system comprising a melt distributor and sprue block assembly having an inlet sprue orifice, at least first and second exit sprue orifices which are in a mold parting plane between a fixed mold half and a movable mold half Die casting mold open, and a branching from the sprue mouth opening to the Angussausmünditch extending runner channel structure includes.
  • hot runner gating system called Frech-G collectlauf-System or Frech-Gating-System (FGS) for die casting molds on the market, as it is also described, for example, in the journal article L.H. Kallien and C. Böhnlein, Druckguss, G corderei 96, 07/2009, pages 18 to 26.
  • hot runner gating systems Compared to other conventional gating systems, hot runner gating systems generally have the advantage that the proportion of melted material that falls on the so-called gating or the gating area in front of the mold cavity and has to be separated from the cast product can be significantly reduced.
  • hot runner gating systems which are, for example, of a comb or fan gating type or have sprue block units with integrated melt channel heating that can be used independently in a respective casting mold.
  • Other conventional multi-channel hot runner gating systems are in the published patent applications JP 2002-263790 A , JP 2003-039158 A and JP 2001-030055 A specified.
  • the design of the hot runner gating system for said elevated temperature range exacerbates the difficulties associated with the thermal expansion of the various components of the gating system and their surrounding structures, particularly the adjacent parts of the fixed mold half and the moving mold half.
  • differences in thermal expansion due to the use of different materials for the relevant components must also be taken into account.
  • the gating system must be reliably sealed to prevent melt leakage due to system leaks.
  • seals such as those used in mold making hot runner systems for plastic injection molding that are designed for a lower operating temperature range, are not well suited for the increased operating temperature range mentioned, especially since the seals not only have to seal reliably in the operating temperature range when the melt-carrying channels are at liquidus temperature, but also have to withstand the cooling process of the casting process when the system is still filled with melt and this solidifies in the channel during cooling.
  • the geometry and temperature profile of the hot runner gating system are chosen to address these issues such that the melt exits are preferably upsloping and that a temperature gradient from a hotter, upstream region formed, for example, by a melt manifold region and at an operating temperature of depending on the used For example, maintaining melt material at 380°C to 700°C to a less hot, downstream region conforming to a contouring portion of the mold formed by the fixed and movable mold halves having an operating temperature range of about 120°C to 300°C adjacent.
  • the temperature conditions described increase the problem of thermal expansion of different, adjacent system components.
  • the patent specification DE 102005 054 616 B3 discloses a permanent mold with a permanent mold body at least partially surrounding a mold cavity and a mold insert which has an upper side associated with the mold cavity, a base body which is seated with play in a receptacle of the mold body when the mold is cold and a support collar which is positively engaged in a shoulder of the mold cavity which merges into the mold cavity recording sits.
  • the overall height of the support collar and base body is smaller than a depth of the receptacle by an undersize that is at least equal to a height dimension by which the base body expands in the height direction during casting.
  • the patent specification DE 840 905 discloses an injection mold in which a portion of a cavity is placed in an insert which is slidable in the parting direction to allow it to self-center with an ejection mold having a recess into which one end of the insert fits.
  • the invention is based on the technical problem of providing a hot-runner gating system and die-casting mold arrangement of the type mentioned at the outset, which is also suitable for relatively high die-casting temperatures in an advantageous manner with process reliability.
  • the invention solves this problem by providing a hot runner gating system and die assembly having the features of claim 1.
  • the melt distributor and sprue block structure is produced at least in one block area on the outlet side containing the two or more sprue openings, in a transverse direction parallel to the mold parting plane, which is shortened by a dimension compared to a specified nominal operational extension, with the melt distributor and sprue block structure having a melt distributor block with one of the a first outlet nozzle associated with the first sprue orifice and a second outlet nozzle associated with the second sprue orifice, and an intermediate plate with nozzle attachment mouthpieces for centering attachment of the outlet nozzles.
  • the intermediate plate is manufactured with a distance between their nozzle attachment mouthpieces, which corresponds to an operating temperature distance between the outlet nozzles, while the melt distributor block has a Distance of its outlet nozzles is made, which corresponds to a lower than the operating temperature distance room temperature distance.
  • the intermediate plate After heating up to the operating temperature, the intermediate plate can be moved onto an existing heating package and onto the outlet nozzles of the melt distribution block, as a result of which it can brace and seal the outlet nozzles. Thereafter, the intermediate plate can be locked, after which the tool works in this configuration until the operating temperature range is left again.
  • the degree of expansion is predetermined as the thermal transverse expansion of the exit-side block region containing the two sprue orifices relative to the thermal transverse expansion of a surrounding region of the solid mold half when heated from a room temperature range to a higher than this, predetermined operating temperature range and is equal to the difference in the distance that the nozzle attachment tips made Have intermediate plate from each other, and the room temperature distance of the outlet nozzles of the melt distribution block of this block area when heated from a room temperature range to a contrast increased, predetermined operating temperature range.
  • the thermal transverse expansion is meant as a relative value, i.e. relative to any lower thermal transverse expansion of adjacent system components, such as in particular an adjacent area of the fixed mold half.
  • the linear expansion of the melt distributor and sprue block structure in the particularly relevant area on the outlet side is taken into account in a controlled manner, which includes a prior determination of the associated thermal expansion.
  • the preliminary determination can be carried out experimentally and/or by means of computer simulation, as is known per se to a person skilled in the art, with the respective influencing parameters representing input variables of this preliminary determination and represent the respective die casting mold with its relevant parts.
  • melt distributor and sprue block structure When the melt distributor and sprue block structure is heated from room temperature to the operating temperature, it expands precisely by the amount of expansion by which it was manufactured shortened, so that it is gap-free and sealing with respect to the adjoining system components, e.g fits. Sufficient tightness at the contact/connection points is preferably achieved by suitable material pairings in such a way that the thermally different coefficient of expansion seals the system more tightly as the temperature increases.
  • suitable temperature-dependent prestressing can be calculated in advance and applied and/or conical sealing surfaces can be used in the temperature range of the tool.
  • the invention thus makes it possible to provide a die-casting-tight connection, i.e. a sufficiently tight connection with respect to the die-casting melt, between the melt distributor and sprue block structure on the one hand and the fixed mold half on the other hand, without the use of separate sealing elements being mandatory for this purpose.
  • a front side of the outlet nozzles on the one hand and an inlet-side surface of the nozzle attachment mouthpieces on the other hand are designed as correspondingly conical inclined surfaces. This measure contributes to the outlet nozzles being able to be accommodated securely and braced and in a gap-free sealing manner with the formation of a flat or at least linear sealing effect in the nozzle attachment mouthpieces of the intermediate plate.
  • the hot runner gating system includes a melt manifold and sprue block assembly having an inlet gate 1, first and second outlet gates 2, 3 opening into a mold parting plane between a fixed mold half 4 and a movable mold half 20 of the die, and one branching runner structure 5 extending from the sprue mouth opening 1 to the sprue mouths 2, 3.
  • the runner channel structure 5 includes two aerodynamically parallel runner channels 5a, 5b, which jointly branch off from the sprue mouth opening 1 and of which one leads to one sprue mouth 2 and the other to the other Angussausmündung 3 leads.
  • a tip nozzle of an upstream part of the gating system such as a shot sleeve or a riser, can be applied to the sprue mouth opening 1 in the usual way.
  • the melt distributor and sprue block assembly comprises a one-piece distributor and sprue block 6 containing the runner structure 5 from the sprue opening 1 to the sprue orifices 2,3.
  • An exit block portion 6a of the manifold and sprue block 6 is formed as an elongated oval, with the two sprue orifices 2, 3 being located at opposite end portions of the oval as shown.
  • the distributor and sprue block 6 is arranged on the fixed mold half 4 in such a way that it lies with its exit-side oval 6a in an elongated oval receptacle 7 of the fixed mold half 4 of the same shape.
  • a respective entry area 25, 26 of the movable mold half 20 or of the mold cavity formed by the two mold halves 4, 20 corresponds to each of the sprue openings 2, 3.
  • the degree of expansion ⁇ b is characteristically predetermined in a controlled manner as the transverse thermal expansion of this oval block region 6a when heated from a room temperature range to a comparatively increased, predetermined operating temperature range.
  • the 2 and 3 show the built-in oval block area 6a in its finished, shortened dimension b as it is at room temperature.
  • the degree of expansion ⁇ b is determined experimentally as a function of the melt material to be cast and the other parameters that have an influence on the thermal expansion behavior of the system components relevant here, such as by corresponding tests or test series, and/or by computer simulation, as the expert from other problems known in itself.
  • the melt materials are primarily metal melts from non-ferrous alloys, such as those based on magnesium, aluminium, zinc, tin, lead and brass, but also called molten salts.
  • the hot runner gating system can in particular also be designed for comparatively high operating temperatures of over 600°C and in corresponding applications even up to 700°C or 750°C.
  • the degree of expansion corresponds to a degree of deviation by which the position of the sprue openings 2, 3 parallel to the mold parting plane deviates from the position of the entry areas 25, 26 at room temperature.
  • Predetermining the extent ⁇ b of expansion of the distributor and sprue block 6 and in particular its outlet-side oval block area 6a enables a tight fit to be achieved between adjacent parts without the risk of melt leakage, with the usual seals being able to be dispensed with in whole or at least in part.
  • the distributor and sprue block 6 When the distributor and sprue block 6 is brought from room temperature to the specified operating temperature, it expands in the transverse direction more than the surrounding area of the fixed mold half 4 according to the previously determined extent ⁇ b.
  • the corresponding receptacle 7 in the fixed mold half 4 is suitable for this made larger by the extent ⁇ b than the recorded oval block area 6a, ie in the example of FIG 2 the receptacle 7 has a width B in the transverse direction along a connecting line 8 of the two sprue openings 2, 3, which is greater by the extent ⁇ b than the extent b of the oval block region 6a in this direction.
  • the change in thermal expansion of the fixed mold half 4 and especially its recess 7 is practically negligible compared to that of the oval sprue block region 6a. Otherwise, it goes without saying that the previously determined dimension of expansion ⁇ b is always the difference between the changes in thermal expansion of the system components or components located opposite one another.
  • the 4 and 5 show the system in the view of 2 and 3 after the distributor and sprue blocks 6 have been heated to the predetermined, desired operating temperature range.
  • the oval block area 6a has expanded by the previously determined extent ⁇ b as a result of the heating and thus fills its assigned receptacle 7 in the fixed mold half 4 with a precise fit and seal, i.e. it presses against the edge on all sides parallel to the mold parting plane without a gap and sealing it due to its thermal expansion its corresponding recording 7.
  • the gap dimension ⁇ b existing in the cold state is reduced to zero, ie the distributor and sprue block 6 rests in the region of its sprue openings 2, 3 with a pressure-cast-tight connection 27 against the adjoining region of the fixed mold half 4.
  • a die-cast-tight connection is to be understood here as a sufficiently gap-free, leak-tight connection for the die-casting application, which prevents liquid, hot melt material from penetrating between the relevant components, in the exemplary embodiment of FIG Figures 1 to 5 similar to a press fit. This provides the necessary and desired sealing of the system for subsequent casting operations.
  • the degree of deviation ⁇ d between the position of the sprue openings 2, 3 and the position of the entry areas 25, 26 is reduced, preferably also to zero or almost zero, so that each sprue opening 2, 3 in desired way the associated entry area 25, 26 opposite sufficiently aligned.
  • 120 °C to 300°C are maintained exactly at the desired, required point with regard to the shape defined by the two mold halves and that this point, despite the different thermal expansion of e.g. 120°C to 300°C tempered mold on the one hand and on e.g. 380°C to 700°C temperature runner channel structure 5 on the other hand is sufficiently impervious to the liquid metal melt used, taking into account its viscosity and the melt pressure used of e.g. approx. 300bar and more, e.g. up to approx. 450bar.
  • the distributor and sprue block 6 is made in one piece, there is the hot runner sprue system Figures 1 to 5 no separation points to be sealed between a melt cross-distribution area and a melt outlet nozzle area.
  • the melt is transferred from the sprue mouth opening 1 as the central inlet and sprue point of a nozzle of an upstream casting system of the machine via the runner channels 5a, 5b, which preferably run obliquely outwards and upwards, directly into the outlet geometry of the oval outlet area 6a.
  • the Figures 6 to 8 illustrate another hot runner gating system and die assembly not in accordance with the present invention.
  • the runner system includes a melt distributor and runner block assembly similar in configuration to the runner system of FIG Figures 1 to 5 match or be similar.
  • This relates in particular to the inlet-side sprue opening, the two outlet-side sprue openings 2, 3 and the runner channel structure extending in a branching manner from the sprue opening to the sprue openings.
  • the same reference symbols are used here not only for identical but also for functionally equivalent elements.
  • melt distributor and sprue block structure of the system Figures 6 to 8 includes the melt distributor and sprue block structure of the system Figures 6 to 8 a multi-part design with a melt distribution block 21, which is known per se and contains the sprue orifice, which is only partially in 8 can be seen, and with two sprue blocks or sprue inserts 9, 10 connected in parallel in terms of flow, one of which has the first sprue opening 2 on the outlet side and the other has the second sprue opening 3 on the outlet side.
  • the sprue inserts 9, 10 are arranged on the fixed mold half 4 in a transverse direction parallel to the mold parting plane so that they can be displaced and fixed thereon, the transverse direction here again being parallel to the connecting line 8 between the two sprue openings 2, 3.
  • the two sprue inserts 9, 10, with which the melt distributor and sprue block structure thus terminates on the mold side and which contain the sprue openings 2, 3, have an elongated rectangular shape in the example shown and can be displaced along a strip-shaped receiving area 7' on the fixed mold half 4 . In this way, the corresponding thermal linear expansion can be compensated for in this exemplary embodiment.
  • the sprue inserts 9, 10 are left in an unfixed, relaxed state, allowing them to thermally expand, causing the sprue tips 2, 3 to move away from each other accordingly.
  • the sprue inserts 9, 10 have expanded in the transverse direction parallel to the connecting line 8 to such an extent that the sprue orifices 2, 3 have assumed their increased operating temperature distance value A from one another. Then the sprue inserts 9, 10 in their in 7 shown operating temperature condition fixed to the fixed mold half 4.
  • a between the sprue inserts 9, 10 existing gap 22 can be an optional and therefore in the 6 and 7 cover or fastening plate 23 indicated by dashed lines, which can be fixed to the fixed mold half 4, for example, via four attachment points 24 indicated by dashed lines. If required, the covering plate 23 can be used to prevent melt material and any other disruptive particles from penetrating into the intermediate space 22 undesirably.
  • two wedge plates 11, 12 are provided in the example shown, which are provided with wedge-shaped contact surfaces, as shown in FIG 8 can be seen, and inserted between an underside of the respective sprue insert 9, 10 and an underlying section of the fixed mold half 4 and fixed to the fixed mold half 4, in the example shown by means of a screw connection 13.
  • the sprue inserts 9, 10 are safe, gap-free and sealed by material pairing fixed to the fixed mold half 4.
  • the degree of expansion by which the block area on the outlet side of the melt distribution and sprue block structure with the sprue inserts 9, 10 is manufactured to be shortened in a transverse direction parallel to the mold parting plane compared to a specified nominal operating extension, experimentally as thermal transverse expansion of this block area on the outlet side when heated from the room temperature range to the specified operating temperature range by means of tests and/or mathematically by means of computer simulation predicted.
  • the preliminary determination can be realized, for example, in such a way that the sprue inserts 9, 10 rest with their outer sides facing away from one another against an adjacent section of a mold frame 4a of the fixed mold half 4, as in 7 shown.
  • the melt distributor and sprue block structure comprises a melt distributor block 14, to which a first outlet nozzle 15 and a second outlet nozzle 16 are assigned on the outlet side, and an intermediate plate 17 with nozzle attachment mouthpieces 18, 19 for centering attachment of the outlet nozzles 15, 16.
  • the first outlet nozzle 15 is associated with the first sprue orifice 2, which continues through the nozzle attachment tip 18 and the intermediate plate 17.
  • the second outlet nozzle 16 is assigned to the second sprue opening 3 , which continues through the nozzle attachment mouthpiece 19 and the intermediate plate 17 .
  • the intermediate plate 17 is manufactured with a distance M between the nozzle attachment mouthpieces 18, 19, which corresponds to an operating temperature distance between the outlet nozzles 15, 16, while the melt distributor block 14 is manufactured with a distance m between the outlet nozzles 15, 16, which is opposite a the operating temperature distance M corresponds to the lower room temperature distance m, as in 9 illustrated.
  • the expansion measure ⁇ m determined in advance by means of tests and/or computer simulation as the thermal transverse expansion of this block area when heated from the room temperature range to the desired operating temperature range.
  • the melt distribution block 14 with its outlet nozzles 15, 16 is first brought to the desired operating temperature range. In doing so, it expands thermally, as a result of which the distance between the outlet nozzles 15, 16 increases from the distance m at room temperature to the value m at the operating temperature. Now the intermediate plate 17 with its nozzle attaching nozzles 18, 19 is placed against the melt distribution block 14, which has been brought to the operating temperature, with the nozzles 18, 19 then being at the same distance from one another as the two outlet nozzles 15, 16, so that the outlet nozzles 15, 16 can be opened without any problems into the conical insertion areas of the nozzle attachment mouthpieces 18, 19.
  • the corresponding conical inclined surface design of the front side of the outlet nozzles 15, 16 on the one hand and the inlet-side surfaces of the nozzles 18, 19 on the other hand means that the outlet nozzles 15, 16 are secured and clamped and, with the formation of a flat or at least linear sealing effect, they seal without a gap in the nozzle attachment nozzles 18, 19 the intermediate plate 17 was added.
  • the intermediate plate 17 is now fixed to the fixed mold half and during subsequent casting in the corresponding area forms a contact surface with an opposite, movable mold half 20. 10 shows the arrangement in this state, brought to operating temperature and ready for operation.
  • the invention provides a very advantageous hot runner gating system with characteristic expansion compensation.
  • the invention encompasses numerous other implementation options, for example sprue systems with more than two, for example three or four, sprue orifices on the outlet side and/or a differently branching runner channel structure.
  • the hot runner gating system according to the invention is particularly suitable for casting a large number of non-ferrous alloys in corresponding temperature ranges of typically between 300° C. and 700° C., eg for casting magnesium, zinc, aluminum, tin, lead and brass, but also for molten salts, for example at temperatures above 700°C.
  • linear expansions of the system during heat-up are compensated, particularly in a controlled manner by anticipating a corresponding amount of expansion and allowing for this as a shortening in manufacture.
  • the heated system parts can be structurally inserted into the mold in such a way that they safely absorb the forces of the mold locking and the melt pressure.
  • the tightness at the contact/connection points is preferably achieved through suitable material pairings compared to steel, to which the different thermal expansion coefficients can contribute.
  • suitable prestresses can be pre-calculated depending on the temperature.
  • conical sealing surfaces can be used in the temperature range of the tool.
  • steel-steel material pairings made from different steel alloys can also be used.
  • Sensors are preferably used for temperature control at suitable points on the tool, so that the heating devices used can be controlled or regulated accordingly, as is known per se to a person skilled in the art.
  • a temperature profile can include, for example, a comparatively hot entry-side area in the melt distribution section and an unheated or less heated exit-side area, which can function as a transient area from the melt distribution area heated to e.g. more than 600°C to the contouring part of the mold, which is e.g ° to about 380°C, preferably at 100°C to 300°C.
  • the lower temperature in the transient range reduces the reactivity in the case of strongly oxidizing melts and, e.g. in the case of magnesium, also the risk of fire, so that the melt in the mold does not necessarily have to be subjected to protective gas during the casting cycle.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Claims (3)

  1. Agencement de système d'injection à canal chaud et de moule de coulée sous pression, comportant
    - un moule de coulée sous pression comprenant une moitié de moule fixe (4) et une moitié de moule mobile (2), et
    - un système d'injection à canal chaud comprenant une structure en bloc de répartition de matière fondue et d'injection avec une ouverture de bouche d'injection (1) côté entrée, au moins un premier et un deuxième débouché d'injection (2, 3) côté sortie qui débouchent dans un plan de séparation de moule entre les moitiés de moule fixe et mobile (4, 20), et une structure de canal de coulée (5) s'étendant en ramification depuis l'ouverture de bouche d'injection (1) jusqu'aux débouchés d'injection (2, 3),
    caractérisé en ce que
    - la structure en bloc de répartition de matière fondue et d'injection est fabriquée, au moins dans une zone de bloc côté sortie comprenant les deux débouchés d'injection (2, 3), en étant raccourcie d'une valeur de dilatation (Δm) par rapport à une extension de consigne de fonctionnement prédéterminée, dans une direction transversale parallèle au plan de séparation de moule, et
    - la structure en bloc de répartition de matière fondue et d'injection présente un bloc de répartition de matière fondue (14), ayant une première buse de sortie (15) associée au premier débouché d'injection (2) et une deuxième buse de sortie (16) associée au deuxième débouché d'injection (3), et une plaque intermédiaire (17) ayant un premier et un deuxième bec d'application de buse (18, 19) pour l'application centrée des buses de sortie (15, 16), le premier débouché d'injection (2) étant prolongé à travers le premier bec d'application de buse (18) et à travers la plaque intermédiaire (17), et le deuxième débouché d'injection (3) étant prolongé à travers le deuxième bec d'application de buse (18) et à travers la plaque intermédiaire (17), et la plaque intermédiaire (17) étant fabriquée avec un écart (M) entre les becs d'application de buse (18, 19) qui correspond à un écart de température de fonctionnement des buses de sortie (15, 16), et le bloc de répartition de matière fondue (14) étant fabriqué avec un écart entre les buses de sortie (15, 16) qui correspond à un écart de température ambiante (m) plus faible que l'écart de température de fonctionnement.
  2. Agencement de système d'injection à canal chaud et de moule de coulée sous pression selon la revendication 1,
    caractérisé en outre en ce que
    la valeur de dilatation (Δm) est déterminée à l'avance comme dilatation thermique transversale de la zone de bloc côté sortie comprenant les deux débouchés d'injection par rapport à la dilatation thermique transversale d'une zone environnante de la moitié de moule fixe (4) lors d'un chauffage passant d'une plage de température ambiante à une plage de température de fonctionnement prédéfinie, plus élevée, et ladite valeur est égale à la différence (M-m) entre l'écart (M) que présentent les becs d'application de buse (18, 19) de la plaque intermédiaire fabriquée (17) et l'écart de température ambiante (m) des buses de sortie (15, 16) du bloc de répartition de matière fondue (14).
  3. Agencement de système d'injection à canal chaud et de moule de coulée sous pression selon la revendication 1 ou 2, caractérisé en outre en ce qu'une face avant des buses de sortie (15, 16) d'une part et une surface côté entrée des becs d'application de buse (18, 19) d'autre part sont conçues sous forme de surfaces obliques coniques correspondantes.
EP16727995.9A 2015-06-05 2016-06-03 Système d'injection de canal chauffant pour un moule de coulée sous pression Active EP3302852B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015210400.1A DE102015210400A1 (de) 2015-06-05 2015-06-05 Heißkanal-Angusssystem für eine Druckgießform
PCT/EP2016/062695 WO2016193458A1 (fr) 2015-06-05 2016-06-03 Système d'injection de canal chauffant pour un moule de coulée sous pression

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CN110605377B (zh) * 2018-06-15 2021-07-06 天津源特机械部件有限公司 一种用于制造断齿散热齿的半固态压铸成形专用模具
CN112496303A (zh) * 2020-12-08 2021-03-16 辽宁金美达科技发展有限公司 气体绝缘变电站用铝合金特高压开关壳体的铸造方法
CN114474532A (zh) * 2021-12-18 2022-05-13 太仓市众翔精密五金有限公司 一种具有多向注入式浇注系统的模具

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DE840905C (de) * 1942-06-25 1952-06-09 Doehler Jarvis Corp Spritzgiessform
JP2001030055A (ja) * 1999-07-16 2001-02-06 Araco Corp 射出成形装置
JP2001047212A (ja) * 1999-08-03 2001-02-20 Juo:Kk 射出成形装置
US20010030055A1 (en) * 2000-01-05 2001-10-18 Jorg-Hein Walling Patch cable with long term attenuation stability
DE50012864D1 (de) 2000-10-31 2006-07-06 Frech Oskar Gmbh & Co Einrichtung zur Herstellung von Metall-Druckgussteilen, insbesondere aus NE-Metallen
JP2002263790A (ja) * 2001-03-12 2002-09-17 Matsushita Electric Ind Co Ltd 金属射出成形装置
JP2003039158A (ja) * 2001-07-30 2003-02-12 Matsushita Electric Ind Co Ltd 金属射出成形方法
US20050255189A1 (en) * 2004-05-17 2005-11-17 Manda Jan M Method and apparatus for coupling melt conduits in a molding system and/or a runner system
DE102005054616B3 (de) * 2005-11-16 2006-11-09 Hydro Aluminium Mandl&Berger Gmbh Dauergießform und Gießformeinsatz
PL2295172T3 (pl) 2007-05-24 2015-07-31 Oskar Frech Gmbh Co Kg Jednostka bloku wlewowego, układ wlewowy i urządzenie sterujące dla maszyny do odlewania ciśnieniowego
US7845936B2 (en) 2009-01-21 2010-12-07 Mold-Masters (2007) Limited Sealing arrangement for an edge gated nozzle in an injection molding system
CN201848524U (zh) * 2010-11-18 2011-06-01 沈阳维用精密机械有限公司 铝合金压铸模
US8690563B2 (en) 2012-07-27 2014-04-08 Mold-Masters (2007) Limited Hot runner manifolds interconnected in a common plane

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JP6802192B2 (ja) 2020-12-16
PL3302852T3 (pl) 2022-12-27
US20180354025A1 (en) 2018-12-13
CN107848025A (zh) 2018-03-27
HK1245718A1 (zh) 2018-08-31
ES2928758T3 (es) 2022-11-22
DE102015210400A1 (de) 2016-12-08
JP2018520006A (ja) 2018-07-26
EP3302852A1 (fr) 2018-04-11
US10618108B2 (en) 2020-04-14
PT3302852T (pt) 2022-09-22
WO2016193458A1 (fr) 2016-12-08

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