EP2295172A1 - Sprue block unit, sprue system and control unit for a diecast machine - Google Patents
Sprue block unit, sprue system and control unit for a diecast machine Download PDFInfo
- Publication number
- EP2295172A1 EP2295172A1 EP10194415A EP10194415A EP2295172A1 EP 2295172 A1 EP2295172 A1 EP 2295172A1 EP 10194415 A EP10194415 A EP 10194415A EP 10194415 A EP10194415 A EP 10194415A EP 2295172 A1 EP2295172 A1 EP 2295172A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sprue
- block
- die casting
- casting machine
- heating
- 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.)
- Granted
Links
- 238000010438 heat treatment Methods 0.000 claims abstract description 66
- 238000004512 die casting Methods 0.000 claims description 32
- 239000000155 melt Substances 0.000 claims description 30
- 238000005429 filling process Methods 0.000 claims description 2
- 238000005266 casting Methods 0.000 abstract description 11
- 229910052751 metal Inorganic materials 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 4
- 238000009826 distribution Methods 0.000 description 10
- 238000010276 construction Methods 0.000 description 7
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000007175 bidirectional communication Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 239000008141 laxative Substances 0.000 description 1
- 230000002475 laxative effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Images
Classifications
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- 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
- B22D17/2015—Means for forcing the molten metal into the die
- B22D17/2038—Heating, cooling or lubricating the injection unit
-
- 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
-
- 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
- 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
- B22D35/00—Equipment for conveying molten metal into beds or moulds
- B22D35/06—Heating or cooling equipment
Definitions
- the invention relates to a sprue block unit for a hot runner-Angusssystem a die casting machine, wherein the sprue block unit has a block body, is introduced into the at least one melt-carrying channel, which opens out of the block body with a gate gate close-fitting, and integrated in the block body heater for the at least having a melt-carrying channel. Further, the invention relates to a hot runner gate system with one or more heated sprue block units and to a control device for a die casting machine with hot runner gate system.
- the gate or gate area is understood to mean the point at which the cast mold breaks off from the sprue of the melt, ie the gate forms the predetermined breaking point for the cast form of solidified melt in the adjacent gate area. This means that the gate at this gate system is directly at the edge of the mold cavity or immediately before it.
- the supply of melt into the nozzle feed channels takes place from a sprue tip, which is formed on the inlet side of the sprue piece, via distributing feed channels in the sprue part.
- the running channels are heated, and in addition, each nozzle is associated with its own heating element in the form of an electrical heating element surrounding the cylindrical nozzle body.
- the publication DE 199 10 853 A1 discloses a die casting machine having a heated melt distributor and a plurality of spaced, heated nozzles sitting in a mold and each having a melt bore for conveying melt to a gate leading to a cavity.
- the melt distribution manifold has a melt passageway and a plurality of spaced apart transverse openings therethrough, each aligned with one of the nozzles, the melt passageway having a plurality of branches extending outwardly from each of the nozzles from a common inlet section, and a plurality of inserts; each of which has a rear surface, a front surface, an outer surface and a melt passage therethrough.
- Each of these inserts is in one of the transverse openings in the Melt dispenser is received such that the front surface abuts the rear end of a corresponding nozzle, wherein the melt channel has a gently curved bend of substantially 90 °, which is an inlet on the outer surface which is aligned with one of the branches of the melt passage in the melt distribution , to an outlet on the front surface, which is aligned with the melt bore of the corresponding nozzle.
- Each transverse opening is cylindrical, as is the outer surface of each insert.
- the publication WO 03/018236 A1 discloses a method for producing magnesium die cast parts by means of a die casting machine whose flow path cross section along the melt flow direction is defined in a defined manner to achieve a reduction in flow rate such that the melt transitions from a molten to a semi-solidified doughy state before entering the mold cavity arrives.
- a heatable nozzle extension with a special cross-sectional configuration of its longitudinal center flow channel bore is provided between a conventional nozzle and the gate area.
- the publication DE 103 59 692 A1 discloses an injection molding apparatus having a gate system including a valve pin closure with melt plug formation and plug heating suitable for injection molding.
- the publication JP 63-137561 A discloses a hot chamber die casting machine in which a temperature sensor senses the temperature at the inside of a melt outlet nozzle in the region of the nozzle outlet, the temperature sensor comprising two thermocouples at different distances from a heat receiving surface to also determine the heat conduction velocity. Depending on the temperature information of this temperature sensor, the closing and heating of the nozzle and the speed and the casting pressure of a casting piston are automatically controlled.
- the invention is based on the technical problem of providing a sprue block unit of the type mentioned above and a hot runner gate system and a control device for a die casting machine, with which the flexibility of Angusssystems die casting machines and / or the melt heating in Angusssystem and / or the control of the die casting machine can be improved over the above-mentioned prior art.
- the invention solves this problem by providing a sprue block unit having the features of claim 1, a hot runner gate system having the features of claim 2 or 5 and a control device having the features of claim 6 or 7.
- the sprue block unit according to the invention is designed as a unit that can be used independently in a respective casting mold with a block body into which at least one melt-carrying channel is inserted and a heater is integrated.
- the sprue block unit is not a solid, permanent sprue block part of a mold or mold half, but can be used modularly and flexibly in various molds, which are provided with corresponding receiving openings.
- a plurality of such sprue block units can be used in any arrangement configuration depending on the size and type of the mold.
- the at least one melt-carrying channel opens out of the block body of the sprue block unit with a sprue opening close to the gate, which means that the sprue block unit forms the gate area for the mold in question or is located directly in front of it with this gate opening close to the gate. This in turn means that the Melt can be actively heated by using this sprue block unit on its conveying path until immediately before reaching the mold cavity.
- the hot runner runner system of claim 2 is equipped with one or more sprue block units and a manifold block assembly according to the present invention, to which the one or more runner block units are mounted on a runner side.
- the manifold block assembly is provided with one or more flow channels through which melt can be supplied to the melt-carrying channel (s) of the one or more runner block units.
- the distributor block structure forms a variably deployable, modular structural unit which, depending on the application, can be configured differently and inserted into a mold or mold half.
- a plurality of runner block units may be arranged in a linear, i. one-dimensional, configuration or in a two-dimensionally distributed configuration arranged on the manifold block structure and so are used at distributed locations on a sprue side in a mold or mold half.
- the distribution block structure has one or more distribution block elements, wherein the respective distribution block element can be actively heated. This ensures a continuously heated distribution of melt, which may be added to the manifold block assembly e.g. is supplied via an upstream metering unit with casting piston and nozzle, on the individual, to the manifold block assembly coupled sprue block units.
- the hot runner gate system according to claim 4 or 5 has at least one sprue block unit, which may in particular also be a sprue block unit according to the invention, and at least a heating control loop for the controlled heating of the same, wherein the heating control circuit has at least two individually controlled for the regulation of a predeterminable temperature profile heating elements for the respective sprue block unit.
- This allows in operation a comparatively variable and accurate adjustment of the temperature for the melt flowing through the sprue block unit before the melt passes directly from there into the mold cavity. It is understood that, if required, further individually controlled heating elements can be provided along the melt flow path upstream of the sprue block unit.
- the control device is intended to control a die casting machine, which is used for the production of metal die castings and a hot runner-Angusssystem, which may in particular also be a hot runner-Angusssystem invention, and a Angusssystem temperature sensor.
- the control device is designed to control a respective mold filling operation as a function of a temperature information supplied to it by the gate system temperature sensor. Thereby, the mold filling operation, i. the filling of the mold cavity with the melt, be made dependent on the detected temperature of the melt in Angusssystemteil.
- this is used to release or start the respective mold filling process only when one or more temperatures detected by the sprue system temperature sensor are within a respectively predetermined desired temperature range or setpoint temperature window in the hot runner gate system. This ensures that the casting of the mold only takes place when predetermined desired temperature conditions prevail in the sprue system, for example in one or more sprue block units according to the invention used in the hot runner gate system.
- the in Fig. 1 The sprue system and control part of a die casting machine shown with the components of interest includes a hot runner gate system 1 of modular construction comprising a manifold block assembly 2 and sprue block units attached thereto on a sprue side, in the example shown four sprue block units 3a, 3b, 3c, 3d.
- the die casting machine can be, for example, a hot-chamber die casting machine for zinc or magnesium die-casting, alternatively also a hot-chamber die casting machine for other materials castable therewith or a die casting machine for metal diecasting of the cold chamber type.
- the distributor block assembly 2 includes a longitudinal distributor block 2a and two transverse distributor blocks 2b arranged at opposite end regions of the longitudinal distributor block 2a.
- the longitudinal distribution block 2a has an in Fig. 1 upper side a central inlet opening 4 as Angus mouthpiece of the hot runner-Angusssystems 1, to which in a conventional, not further shown manner, an end nozzle of a casting piston unit of an upstream melt metering unit of the die casting machine can be attached. From Angus mouthpiece 4 performs a longitudinal center rotor channel 5, as in the sectional view of Fig.
- Each sprue block unit 3a to 3d is constructed in the same way from a block body 8 with integrated heating.
- the construction of the respective sprue block units 3a to 3d is shown in the sectional views of FIGS FIGS. 2 and 3 to recognize closer. Specifically, it includes in the example shown, a T-shaped base body 9 with elongated central dome 9a, in which the supply channel 7 is introduced as a central axial bore, and thereof quer querendem foot part 9b.
- foot part 9b In the foot part 9b are formed from the mouth of the inlet channel 7 to two opposite sides transverse laxative runners 11a, 11b, which open in the corresponding lower side region of the sprue block unit 3a to 3d, each with a slot-shaped gate opening 12a, 12b close to the gate.
- a thermal insulation layer 10 is provided in the foot part 9b.
- this melt-carrying channel system of the sprue block unit 3a to 3d is actively heated in a targeted manner.
- the integrated heater comprises a first heating device serving primarily the inlet channel heating and a second heating device serving primarily for sprue channel heating, which can be controlled or regulated separately from the first heating device.
- the first heating device includes two separately controllable heating circuits 13a, 13b, which are arranged on the lateral surface of the central dome 9a
- the second heating device has two separately controllable electrical heating circuits 14a, 14b, which are also separated from each other and separate from the heating circuits 13a , 13b of the first heating device are controllable and are arranged on the base part 9b of the base body 9.
- the electric heating circuits 13a to 14b e.g. can be realized by suitably configured Schudrahtiata, shielded by a thermal insulation ring 15, which in turn is surrounded by an outside flush with the foot part 9b arranged outer shell 16 of the sprue block unit 3a to 3d.
- each runner block unit 3a to 3d is as in FIG Fig. 2 represented, in each case a heating control loop associated with a control unit 17, which emits via an electrical amplifier 18 suitable control signals 19, ie heating current signals, separately for each of the separately controllable heating circuits or heating elements 13a to 14b.
- suitable control signals 19 ie heating current signals
- corresponding temperature actual value information 20 with respect to each heating circuit 13a to 14b of the control unit 17 is supplied, which in consideration of taking over a Setpoint input input setpoint information 21, the control signals 19 generates.
- the second heater for the sprue heating in addition to the first heater for the Zulaufkanalbeloomung can be with this heating loop by means of suitable specification of the corresponding temperature setpoint information a desired temperature profile for the heated, consisting of the inlet channel 7 and the sprue channels 11 a, 11 b melt-carrying channel the sprue block unit 3a to 3d choose very variable and comply very precisely.
- a desired temperature profile for the heated consisting of the inlet channel 7 and the sprue channels 11 a, 11 b melt-carrying channel
- the sprue block unit 3a to 3d choose very variable and comply very precisely.
- the respective heating device is made up of a plurality of independently controllable heating circuits or heating elements
- the temperature profile in the inlet channel region and / or in the sprue channel region can also be adjusted and regulated comparatively fine.
- a temperature profile which varies depending on the location along the melt path or conveying path of the melt in the inlet channel 7 and / or the sprue channels 11a, 11b can also be predetermined and regulated.
- the melt can also be actively heated in the manifold block assembly 2 before reaching the sprue block units 3a to 3d.
- corresponding further heating devices are used in the longitudinal distribution block 2a integrated heating elements, eg in Fig. 3 shown heating wires 23, and integrated in the transverse distribution blocks 2b heating elements, eg in Fig. 2 shown heating wires 22.
- Fig. 1 how out Fig. 1 can be seen, is the in Fig. 2 for one of the sprue block units 3a heating control loop part of an overall heating control loop for all actively heated components of the hot runner Angusssystems 1 with a higher-level central control unit ZR, individual control units 17 1 to 17 4 and associated control signal amplifiers or power units 18 1 to 18 4 for each of Angle block units 3 a to 3d, a single control unit 17 5 with associated power section 18 5 for the controlled heating of the longitudinal manifold block 2a and two individual control units 17 6 , 17 7 each with associated power section 18 6 , 18 7 for the separate heating of each of the two transverse manifolds 2b.
- Each of the individual control units 17 1 to 17 7 corresponds in their operation of the control unit 17 of Fig. 2 and receives from each of its associated and in the sprue block unit 3a to 3d or in the transverse manifold blocks 2b and the longitudinal manifold block 2a suitably arranged temperature sensor corresponding temperature actual value information 20 i .
- each individual control unit 17 i outputs an associated status signal 23 i to the central control unit ZR, which contains information about the temperature in the associated sprue system area, which is heated by the heating element or heating circuit that is controlled by this control unit becomes.
- this status signal 23 i comprises information about Whether the temperature regulated by the respective individual control loop is within a setpoint temperature window or setpoint temperature range specified by the setpoint information 21 i or not.
- the central control unit ZR separately for each of the sprue block units 3a to 3d, the two transverse manifolds 2b and the longitudinal manifold block 2a individual set temperatures or setpoint temperature ranges to be maintained as temperature profiles are set, which are then adjusted by the individually associated individual control loops .
- the central control unit ZR depending on the system design and application, in addition to the mentioned heating control for the hot runner runner system fulfill further control tasks. In the example shown, it stands with a central machine control MS of the die casting machine in bidirectional communication connection 24.
- this is used, inter alia, to inform the central machine controller MS as to whether the heating temperature profiles or setpoint temperature ranges individually individually predetermined for the various heatable components of the hot runner gate system 1 have been achieved or maintained.
- the central machine controller MS uses this information to release or start a respective mold filling operation and thus the feeding of melt into the hot runner-gate system 1 only when it has been informed by the central control unit ZR that all predetermined temperature profiles or Set temperatures for the individual heatable components of the hot runner-Angusssystems 1, ie for the sprue block units 3a to 3d, the transverse manifold blocks 2b and the longitudinal manifold block 2a, achieved or respected.
- the temperature in one or more components of the hot runner gate system 1, eg the temperature in the longitudinal manifold block 2a or one of the two transverse distributor blocks 2b or the temperature for the inlet channel 7 and / or the temperature for at least one of the two sprue channels 11a, 11b in one of the sprue block units 3a to 3d does not lie in the desired, predetermined nominal temperature window.
- a further advantage of the invention is the modular design of the hot runner gate system 1, which can be realized in virtually any desired configuration from one or more runner block units, which are designed as units which can be used independently in a respective casting mold, and an upstream manifold block structure.
- runner block units which are designed as units which can be used independently in a respective casting mold, and an upstream manifold block structure.
- a suitable number of sprue block units for example with the in FIGS. 2 and 3 shown construction over a solid mold half distributed in corresponding recesses thereof are used.
- Fig. 1 By way of example, a configuration with four sprue block units in a rectangular distribution is shown.
- the mating manifold construction with a longitudinal manifold block and two transverse manifold blocks distributes the melt to the runner block units and also serves as a common support or mounting frame to which the sprue block assemblies are attached.
- any other number of such stand-alone sprue block units may be used in any other geometric arrangement, with appropriate associated manifold structure, which in turn may consist of a single manifold block or a plurality of manifold blocks attached to one another depending on the application.
- Fig. 4 shows the gating system 1 in an installed position in a mold with a fixed mold half 25 and a movable mold half 27 which abut each other in closed mold, as shown, along a parting plane 26 to form a mold cavity 28, the sectional plane of Fig. 4 those of Fig. 2 corresponds, ie it can be seen in Fig. 4 the sprue block unit 3a with its associated transverse distributor 2 B.
- the sprue system 1 with its four sprue block units and its distributor block structure is inserted into corresponding recesses 29 of the fixed mold half 25.
- the gate openings 12a, 12b are opposite a gate channel 30, which leads with a short length directly into the mold cavity 28, from which in the sectional plane of the Fig. 4 only a small section can be seen.
- the supplied melt passes from the rotor channel 6 of the transverse distributor block 2b into the inlet channel 7 of the respective sprue block unit, then distributes itself into the sprue channels 11a, 11b and is forced into the mold cavity 28 via the gate openings 12a, 12b and the gate channels 30. In this case, it is actively heated on its conveying path until it leaves the sprue openings 12a, 12b.
- the heating in the respective sprue block unit by the two separately controllable or controllable heaters with one or more heating circuits 13a, 13b and 14a, 14b for heating the inlet channel 7 and the sprue channels 11a, 11b very flexible and sensitively, in particular a desired temperature profile for the conveying path of the melt in the respective sprue block unit can be predetermined and maintained.
- the melt can be up to its entry into the mold cavity 28 via the gates 30 in a predeterminable manner controlled or controlled active heating.
- a hot runner runner system having a whole set of different configurations of runner block units, each with associated manifold block construction, may be provided for use in various molds.
- the respective sprue block unit is designed as an independent unit which can be used in a respective casting mold and consequently is not an insoluble component of a fixed mold half or of a sprue block mounted inseparably on it, the respective sprue block unit or an entire hot runner gate system with one or more sprue block units and associated manifold block construction are used for different molds when needed, ie the sprue block unit or the hot runner gate system, after it was first used in a first mold, removed from this and can subsequently or later in another mold can be used.
- FIG. 5 a configuration of a hot runner-Angusssystems 1 'according to the invention, the three sprue block units 3e, 3f, 3g of the in FIGS. 2 and 3 shown in a star-shaped, triangular arrangement with a manifold block construction, which is formed by a single, three-pronged manifold block 2 'with inlet-side, central Angusmund Kab 4'.
- a manifold block construction which is formed by a single, three-pronged manifold block 2 'with inlet-side, central Angusmund Fabric 4'.
- a manifold block construction which is formed by a single, three-pronged manifold block 2 'with inlet-side, central Angusmund Kab 4'.
- the distributor block 2 'and the sprue block units 3e, 3f, 3g are in the same manner as above for the embodiment of Fig. 1 to 4 described separately associated heating elements associated with individual heating control circuits and an associated central control unit, which here no repeated description needs. Otherwise, the hot runner gate system corresponds to 1 'of Fig. 5 in its mode of action and its advantages to that of the Fig. 1 to 4 , to which reference can be made.
- the modular hot runner gate system according to the invention is suitable e.g. for hot chamber die casting machines, but it is equally usable for die casting machines of the cold chamber type.
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- Engineering & Computer Science (AREA)
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- Moulds For Moulding Plastics Or The Like (AREA)
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Die Erfindung bezieht sich auf eine Angussblockeinheit für ein Heißkanal-Angusssystem einer Druckgießmaschine, wobei die Angussblockeinheit einen Blockkörper, in den wenigstens ein schmelzeführender Kanal eingebracht ist, der aus dem Blockkörper mit einer anschnittnahen Angussmündung ausmündet, und eine in den Blockkörper integrierte Heizung für den wenigstens einen schmelzeführenden Kanal aufweist. Weiter bezieht sich die Erfindung auf ein Heißkanal-Angusssystem mit einer oder mehreren beheizbaren Angussblockeinheiten und auf eine Steuerungseinrichtung für eine Druckgießmaschine mit Heißkanal-Angusssystem.The invention relates to a sprue block unit for a hot runner-Angusssystem a die casting machine, wherein the sprue block unit has a block body, is introduced into the at least one melt-carrying channel, which opens out of the block body with a gate gate close-fitting, and integrated in the block body heater for the at least having a melt-carrying channel. Further, the invention relates to a hot runner gate system with one or more heated sprue block units and to a control device for a die casting machine with hot runner gate system.
In der Patentschrift
Die Offenlegungsschrift
Die Offenlegungsschrift
Die Offenlegungsschrift
Die Offenlegungsschrift
Der Erfindung liegt als technisches Problem die Bereitstellung einer Angussblockeinheit der eingangs genannten Art sowie eines Heißkanal-Angusssystems und einer Steuerungseinrichtung für eine Druckgießmaschine zugrunde, mit denen sich die Flexibilität des Angusssystems von Druckgießmaschinen und/oder die Schmelzebeheizung im Angusssystem und/oder die Steuerung der Druckgießmaschine gegenüber dem oben erwähnten Stand der Technik verbessern lassen.The invention is based on the technical problem of providing a sprue block unit of the type mentioned above and a hot runner gate system and a control device for a die casting machine, with which the flexibility of Angusssystems die casting machines and / or the melt heating in Angusssystem and / or the control of the die casting machine can be improved over the above-mentioned prior art.
Die Erfindung löst dieses Problem durch die Bereitstellung einer Angussblockeinheit mit den Merkmalen des Anspruchs 1, eines Heißkanal-Angusssystems mit den Merkmalen des Anspruchs 2 oder 5 sowie einer Steuerungseinrichtung mit den Merkmalen des Anspruchs 6 oder 7.The invention solves this problem by providing a sprue block unit having the features of claim 1, a hot runner gate system having the features of claim 2 or 5 and a control device having the features of
Die erfindungsgemäße Angussblockeinheit ist als eigenständig in eine jeweilige Gießform einsetzbare Baueinheit mit einem Blockkörper ausgebildet, in den wenigstens ein schmelzeführender Kanal eingebracht und eine Heizung integriert ist. Mit anderen Worten ist die Angussblockeinheit kein fester, unlösbarer Angussblockteil einer Gießform bzw. Formhälfte, sondern kann modular und flexibel in verschiedenen Gießformen zum Einsatz kommen, die dazu mit korrespondierenden Aufnahmeöffnungen versehen sind. Dabei können auch mehrere derartige Angussblockeinheiten in einer beliebigen Anordnungskonfiguration je nach Größe und Art der Gießform verwendet werden. Der wenigstens eine schmelzeführende Kanal mündet aus dem Blockkörper der Angussblockeinheit mit einer anschnittnahen Angussmündung aus, was bedeutet, dass die Angussblockeinheit mit dieser anschnittnahen Angussmündung den Anschnittbereich für die betreffende Form bildet oder diesem unmittelbar vorgelagert ist. Dies wiederum bedeutet, dass die Schmelze durch Verwendung dieser Angussblockeinheit auf ihrem Förderweg bis unmittelbar vor Erreichen des Formhohlraums aktiv beheizt werden kann.The sprue block unit according to the invention is designed as a unit that can be used independently in a respective casting mold with a block body into which at least one melt-carrying channel is inserted and a heater is integrated. In other words, the sprue block unit is not a solid, permanent sprue block part of a mold or mold half, but can be used modularly and flexibly in various molds, which are provided with corresponding receiving openings. In this case, a plurality of such sprue block units can be used in any arrangement configuration depending on the size and type of the mold. The at least one melt-carrying channel opens out of the block body of the sprue block unit with a sprue opening close to the gate, which means that the sprue block unit forms the gate area for the mold in question or is located directly in front of it with this gate opening close to the gate. This in turn means that the Melt can be actively heated by using this sprue block unit on its conveying path until immediately before reaching the mold cavity.
Das Heißkanal-Angusssystem nach Anspruch 2 ist mit einer oder mehreren erfindungsgemäßen Angussblockeinheiten und einem Verteilerblockaufbau ausgerüstet, an dem auf einer Angussseite die eine oder mehreren Angussblockeinheiten angebracht sind. Der Verteilerblockaufbau ist mit einem oder mehreren Laufkanälen versehen, über die Schmelze dem oder den schmelzeführenden Kanälen der einen oder mehreren Angussblockeinheiten zugeführt werden kann. Der Verteilerblockaufbau bildet auf diese Weise mit der oder den an ihm angebrachten Angussblockeinheiten eine variabel einsetzbare, modulare Baueinheit, die je nach Anwendungsfall unterschiedlich konfiguriert und in eine Form bzw. Formhälfte eingesetzt werden kann. Beispielsweise können zur Realisierung eines Heißkanal-Kamm-Angusssystems mehrere Angussblockeinheiten in einer linearen, d.h. eindimensionalen, Konfiguration oder in einer zweidimensional verteilten Konfiguration am Verteilerblockaufbau angeordnet und so an verteilten Stellen auf einer Angussseite in eine Form bzw. Formhälfte eingesetzt werden.The hot runner runner system of claim 2 is equipped with one or more sprue block units and a manifold block assembly according to the present invention, to which the one or more runner block units are mounted on a runner side. The manifold block assembly is provided with one or more flow channels through which melt can be supplied to the melt-carrying channel (s) of the one or more runner block units. In this way, with the sprue block units attached to it, the distributor block structure forms a variably deployable, modular structural unit which, depending on the application, can be configured differently and inserted into a mold or mold half. For example, to realize a hot runner comb gate system, a plurality of runner block units may be arranged in a linear, i. one-dimensional, configuration or in a two-dimensionally distributed configuration arranged on the manifold block structure and so are used at distributed locations on a sprue side in a mold or mold half.
In einer Weiterbildung der Erfindung weist der Verteilerblockaufbau einen oder mehrere Verteilerblockelemente auf, wobei das jeweilige Verteilerblockelement aktiv beheizt werden kann. Dies gewährleistet eine kontinuierlich beheizte Verteilung von Schmelze, die dem Verteilerblockaufbau z.B. über eine vorgeschaltete Dosiereinheit mit Gießkolben und Düse zugeführt wird, auf die einzelnen, an den Verteilerblockaufbau angekoppelten Angussblockeinheiten.In one development of the invention, the distribution block structure has one or more distribution block elements, wherein the respective distribution block element can be actively heated. This ensures a continuously heated distribution of melt, which may be added to the manifold block assembly e.g. is supplied via an upstream metering unit with casting piston and nozzle, on the individual, to the manifold block assembly coupled sprue block units.
Das Heißkanal-Angusssystem nach Anspruch 4 oder 5 weist wenigstens eine Angussblockeinheit, bei der es sich insbesondere auch um eine erfindungsgemäße Angussblockeinheit handeln kann, und wenigstens einen Heizungsregelkreis zur geregelten Beheizung derselben auf, wobei der Heizungsregelkreis wenigstens zwei individuell zur Einregelung eines vorgebbaren Temperaturprofils geregelte Heizelemente für die jeweilige Angussblockeinheit aufweist. Dies ermöglicht im Betrieb eine vergleichsweise variable und genaue Einstellung der Temperatur für die durch die Angussblockeinheit strömende Schmelze, bevor die Schmelze von dort direkt in den Formhohlraum gelangt. Es versteht sich, dass bei Bedarf weitere individuell geregelte Heizelemente entlang des der Angussblockeinheit vorgeschalteten Schmelzeströmungsweges vorgesehen sein können.The hot runner gate system according to claim 4 or 5 has at least one sprue block unit, which may in particular also be a sprue block unit according to the invention, and at least a heating control loop for the controlled heating of the same, wherein the heating control circuit has at least two individually controlled for the regulation of a predeterminable temperature profile heating elements for the respective sprue block unit. This allows in operation a comparatively variable and accurate adjustment of the temperature for the melt flowing through the sprue block unit before the melt passes directly from there into the mold cavity. It is understood that, if required, further individually controlled heating elements can be provided along the melt flow path upstream of the sprue block unit.
Die Steuerungseinrichtung nach Anspruch 6 oder 7 ist zur Steuerung einer Druckgießmaschine bestimmt, die zur Herstellung von Metalldruckgusseilen dient und ein Heißkanal-Angusssystem, bei dem es sich insbesondere auch um ein erfindungsgemäßes Heißkanal-Angusssystem handeln kann, sowie eine Angusssystem-Temperatursensorik aufweist. Die Steuerungseinrichtung ist dafür ausgelegt, einen jeweiligen Formfüllvorgang in Abhängigkeit von einer ihr durch die Angusssystem-Temperatursensorik gelieferten Temperaturinformation zu steuern. Dadurch kann der Formfüllvorgang, d.h. das Füllen des Formhohlraums mit der Schmelze, von der erfassten Temperatur der Schmelze im Angusssystemteil abhängig gemacht werden.The control device according to
In einer Weiterbildung der Erfindung wird dies dazu genutzt, den jeweiligen Formfüllvorgang erst freizugeben bzw. zu starten, wenn eine oder mehrere von der Angusssystem-Temperatursensorik erfasste Temperaturen im Heißkanal-Angusssystem innerhalb eines jeweils vorgegebenen Solltemperaturbereichs bzw. Solltemperaturfensters liegen. Damit wird sichergestellt, dass das Gießen der Form erst erfolgt, wenn vorgegebene gewünschte Temperaturbedingungen im Angusssystem herrschen, z.B. in einer oder mehreren, im Heißkanal-Angusssystem verwendeten erfindungsgemäßen Angussblockeinheiten.In one development of the invention, this is used to release or start the respective mold filling process only when one or more temperatures detected by the sprue system temperature sensor are within a respectively predetermined desired temperature range or setpoint temperature window in the hot runner gate system. This ensures that the casting of the mold only takes place when predetermined desired temperature conditions prevail in the sprue system, for example in one or more sprue block units according to the invention used in the hot runner gate system.
Vorteilhafte Ausführungsformen der Erfindung sind in den Zeichnungen dargestellt und werden nachfolgend beschrieben. Hierbei zeigen:
- Fig. 1
- ein schematisches Blockdiagramm eines perspektivisch wie- dergegebenen Heißkanal-Angusssystems für eine Druckgieß- maschine in einer viereckförmigen Konfiguration mit zugehöri- gem Steuerungs-/Regelungsteil,
- Fig. 2
- eine Längsschnittansicht des Angusssystems von
Fig. 1 ent- lang einer Linie II-II inFig. 1 mit zugehörigem Heizungsregel- kreis, - Fig. 3
- eine Längsschnittansicht des Angusssystems von
Fig. 1 ent- lang einer Linie III-III inFig. 1 , - Fig. 4
- eine Längsschnittansicht des Angusssystems von
Fig. 1 ent- sprechendFig. 2 in einer Einbaulage und - Fig. 5
- eine schematische Perspektivansicht eines weiteren Heißka- nal-Angusssystems in einer sternförmigen Konfiguration.
- Fig. 1
- FIG. 2 is a schematic block diagram of a perspective view of a hot runner gate system for a die casting machine in a quadrangular configuration with associated control / regulation part, FIG.
- Fig. 2
- a longitudinal sectional view of the Angusssystems of
Fig. 1 along a line II-II inFig. 1 with associated heating control circuit, - Fig. 3
- a longitudinal sectional view of the Angusssystems of
Fig. 1 along a line III-III inFig. 1 . - Fig. 4
- a longitudinal sectional view of the Angusssystems of
Fig. 1 correspondingFig. 2 in a mounting position and - Fig. 5
- a schematic perspective view of another hot runner-Angusssystems in a star-shaped configuration.
Der in
Der Verteilerblockaufbau 2 beinhaltet im gezeigten Beispiel einen Längsverteilerblock 2a und zwei an gegenüberliegenden Endbereichen des Längsverteilerblocks 2a angeordnete Querverteilerblöcke 2b. Der Längsverteilerblock 2a weist auf einer in
Jede Angussblockeinheit 3a bis 3d ist in gleicher Weise aus einem Blockkörper 8 mit integrierter Heizung aufgebaut. Der Aufbau der jeweiligen Angussblockeinheit 3a bis 3d ist aus den Schnittansichten der
Der Zulaufkanal 7 bildet zusammen mit den beiden von ihm endseitig quer abführenden Angusskanälen 11a, 11 b, die vorzugsweise jeweils einen kleineren Durchlassquerschnitt als der Zulaufkanal 7 aufweisen, einen schmelzeführenden Kanal, durch den im Betrieb die über den Verteilerblockaufbau 2 zugeführte Schmelze in der jeweiligen Angussblockeinheit 3a bis 3d direkt zum Anschnittbereich einer Form und somit direkt in oder bis unmittelbar vor einen mit der Schmelze zu befüllenden Formhohlraum geführt wird. Mit der in den Blockkörper 8 integrierten Heizung wird dieses schmelzeführende Kanalsystem der Angussblockeinheit 3a bis 3d gezielt aktiv beheizt.The
Dazu umfasst die integrierte Heizung eine primär der Zulaufkanalbeheizung dienende erste Heizeinrichtung und eine primär zur Angusskanalbeheizung dienende zweite Heizeinrichtung, die separat von der ersten Heizeinrichtung steuer- bzw. regelbar ist. Im gezeigten Beispiel beinhaltet die erste Heizeinrichtung zwei separat ansteuerbare Heizkreise 13a, 13b, die an der Mantelfläche des Mitteldoms 9a angeordnet sind, und die zweite Heizeinrichtung weist zwei separat ansteuerbare elektrische Heizkreise 14a, 14b auf, die ebenfalls getrennt voneinander sowie getrennt von den Heizkreisen 13a, 13b der ersten Heizeinrichtung ansteuerbar sind und auf dem Fußteil 9b des Grundkörpers 9 angeordnet sind. Nach außen bzw. oben sind die elektrischen Heizkreise 13a bis 14b, die z.B. durch geeignet konfigurierte Heizdrahtelemente realisiert sein können, durch einen thermischen Isolationsring 15 abgeschirmt, der seinerseits von einem außenbündig zum Fußteil 9b angeordneten Außenmantel 16 der Angussblockeinheit 3a bis 3d umgeben ist.For this purpose, the integrated heater comprises a first heating device serving primarily the inlet channel heating and a second heating device serving primarily for sprue channel heating, which can be controlled or regulated separately from the first heating device. In the example shown, the first heating device includes two separately
Der integrierten Heizung jeder Angussblockeinheit 3a bis 3d ist, wie in
Durch das Anordnen der zweiten Heizeinrichtung für die Angusskanalbeheizung zusätzlich zur ersten Heizeinrichtung für die Zulaufkanalbeheizung lässt sich mit diesem Heizungsregelkreis mittels geeigneter Vorgabe der entsprechenden Temperatur-Sollwertinformationen ein gewünschtes Temperaturprofil für den beheizten, aus dem Zulaufkanal 7 und den Angusskanälen 11a, 11 b bestehenden schmelzeführenden Kanal der Angussblockeinheit 3a bis 3d sehr variabel wählen und sehr exakt einhalten. Insbesondere ist es durch die beiden separat ansteuerbaren Heizeinrichtungen möglich, eine im Bereich der Angusskanäle 11a, 11 b gewünschte Temperatur unabhängig von der für den Zulaufkanal 7 gewünschten Temperatur einzustellen und einzuhalten. Wenn wie im gezeigten Beispiel die jeweilige Heizeinrichtung aus mehreren unabhängig ansteuerbaren Heizkreisen bzw. Heizelementen aufgebaut ist, kann zudem das Temperaturprofil im Zulaufkanalbereich und/oder im Angusskanalbereich vergleichsweise fein eingestellt und geregelt werden. Bei Bedarf kann hierbei auch ein ortsabhängig entlang des Schmelzeweges bzw. Förderweges der Schmelze im Zulaufkanal 7 und/oder den Angusskanälen 11a, 11 b veränderliches Temperaturprofil vorgegeben und eingeregelt werden.By arranging the second heater for the sprue heating in addition to the first heater for the Zulaufkanalbeheizung can be with this heating loop by means of suitable specification of the corresponding temperature setpoint information a desired temperature profile for the heated, consisting of the
Es versteht sich, dass beim vorliegenden Heißkanal-Angusssystem die Schmelze auch bereits im Verteilerblockaufbau 2 vor Erreichen der Angussblockeinheiten 3a bis 3d aktiv beheizt werden kann. Dazu dienen entsprechende weitere Heizeinrichtungen mit in den Längsverteilerblock 2a integrierten Heizelementen, z.B. in
Wie aus
Somit können in sehr flexibler und variabler Weise durch die zentrale Regeleinheit ZR separat für jede der Angussblockeinheiten 3a bis 3d, die beiden Querverteilerblöcke 2b und den Längsverteilerblock 2a individuelle Solltemperaturen bzw. Solltemperaturbereiche als einzuhaltende Temperaturprofile vorgegeben werden, die dann von den individuell zugeordneten Einzelregelkreisen eingeregelt werden. Die zentrale Regeleinheit ZR kann je nach Systemauslegung und Anwendungsfall außer der erwähnten Heizungsregelung für das Heißkanal-Angusssystem weitere Regelungs-/Steuerungsaufgaben erfüllen. Im gezeigten Beispiel steht sie mit einer zentralen Maschinensteuerung MS der Druckgießmaschine in bidirektionaler Kommunikationsverbindung 24.Thus, in a very flexible and variable manner by the central control unit ZR separately for each of the
Vorliegend wird dies unter anderem dazu genutzt, die zentrale Maschinensteuerung MS darüber zu informieren, ob die individuell für die verschiedenen beheizbaren Komponenten des Heißkanal-Angusssystems 1 individuell vorgegebenen Beheizungstemperaturprofile bzw. Solltemperaturbereiche erreicht sind bzw. eingehalten werden. Die zentrale Maschinensteuerung MS nutzt diese Information dazu, einen jeweiligen Formfüllvorgang und damit das Zuführen von Schmelze in das Heißkanal-Angusssystem 1 erst dann freizugeben bzw. zu starten, wenn sie von der zentralen Regeleinheit ZR darüber informiert worden ist, dass alle vorgegebenen Temperaturprofile bzw. Solltemperaturen für die einzelnen beheizbaren Komponenten des Heißkanal-Angusssystems 1, d.h. für die Angussblockeinheiten 3a bis 3d, die Querverteilerblöcke 2b und den Längsverteilerblock 2a, erreicht bzw. eingehalten sind. Dies vermeidet das Durchführen eines unvorteilhaften Formfüllvorgangs, bei dem die Temperatur in einer oder mehreren Komponenten des Heißkanal-Angusssystems 1, z.B. die Temperatur im Längsverteilerblock 2a oder einem der beiden Querverteilerblöcke 2b oder die Temperatur für den Zulaufkanal 7 und/oder die Temperatur für wenigstens einen der beiden Angusskanäle 11a, 11b in einer der Angussblockeinheiten 3a bis 3d, nicht im gewünschten, vorgegebenen Solltemperaturfenster liegt.In the present case, this is used, inter alia, to inform the central machine controller MS as to whether the heating temperature profiles or setpoint temperature ranges individually individually predetermined for the various heatable components of the hot runner gate system 1 have been achieved or maintained. The central machine controller MS uses this information to release or start a respective mold filling operation and thus the feeding of melt into the hot runner-gate system 1 only when it has been informed by the central control unit ZR that all predetermined temperature profiles or Set temperatures for the individual heatable components of the hot runner-Angusssystems 1, ie for the
Als weiterer Vorteil der Erfindung ist der modulare Aufbau des Heißkanal-Angusssystems 1 zu nennen, das sich in praktisch beliebigen Konfigurationen aus einer oder mehreren Angussblockeinheiten, die als eigenständig in eine jeweilige Gießform einsetzbare Baueinheiten ausgebildet sind, und einem vorgeschaltetem Verteilerblockaufbau realisieren lässt. Je nach Größe und Art der Gießform kann eine geeignete Anzahl von Angussblockeinheiten z.B. mit dem in den
Erfindungsgemäß kann ein Heißkanal-Angusssystem mit einem ganzen Satz verschiedenartiger Konfigurationen von Angussblockeinheiten mit jeweils zugehörigem Verteilerblockaufbau zum Einsatz in verschiedenen Gießformen bereitgestellt werden. Da zudem die jeweilige Angussblockeinheit als eigenständig in eine jeweilige Gießform einsetzbare Baueinheit ausgebildet und folglich kein unlösbarer Bestandteil einer festen Formhälfte bzw. eines an dieser unlösbar angebrachten Angussblocks ist, kann die jeweilige Angussblockeinheit oder ein ganzes Heißkanal-Angusssystem mit einer oder mehreren Angussblockeinheiten und zugehörigem Verteilerblockaufbau bei Bedarf für verschiedene Gießformen benutzt werden, d.h. die Angussblockeinheit bzw. das Heißkanal-Angusssystem wird, nachdem sie bzw. es zunächst in einer ersten Gießform zum Einsatz kam, von dieser abgenommen und kann anschließend oder später in eine andere Gießform eingesetzt werden.In accordance with the present invention, a hot runner runner system having a whole set of different configurations of runner block units, each with associated manifold block construction, may be provided for use in various molds. In addition, since the respective sprue block unit is designed as an independent unit which can be used in a respective casting mold and consequently is not an insoluble component of a fixed mold half or of a sprue block mounted inseparably on it, the respective sprue block unit or an entire hot runner gate system with one or more sprue block units and associated manifold block construction are used for different molds when needed, ie the sprue block unit or the hot runner gate system, after it was first used in a first mold, removed from this and can subsequently or later in another mold can be used.
Beispielhaft zeigt
Wie gesagt, eignet sich das erfindungsgemäße modulare Heißkanal-Angusssystem z.B. für Warmkammer-Druckgießmaschinen, es ist aber in gleicher Weise auch für Druckgießmaschinen vom Kaltkammertyp verwendbar.As stated, the modular hot runner gate system according to the invention is suitable e.g. for hot chamber die casting machines, but it is equally usable for die casting machines of the cold chamber type.
Claims (8)
für den wenigstens einen schmelzeführenden Kanal, dadurch gekennzeichnet, dass
for the at least one melt-carrying channel, characterized in that
gekennzeichnet durch
marked by
die Steuerungseinrichtung dafür eingerichtet ist, eine Temperaturinformation der Angusssystem-Temperatursensorik zu empfangen und in Abhängigkeit davon einen Formfüllvorgang der Druckgießmaschine zu steuern.Control device for a die casting machine, wherein the die casting machine has a hot runner-Angusssystem (1) with associated Angusssystem temperature sensor, characterized in that
the controller is adapted to receive temperature information of the gate system temperature sensor and to control a mold filling operation of the die casting machine in response thereto.
dadurch gekennzeichnet, dass
die Steuerungseinrichtung dafür eingerichtet ist, eine Temperaturinformation der Angusssystem-Temperatursensorik zu empfangen und in Abhängigkeit davon einen Formfüllvorgang der Druckgießmaschine zu steuern.Control device for a die casting machine, wherein the die casting machine has a hot runner-gate system (1) according to one of claims 2 to 5 with associated Angusssystem temperature sensor,
characterized in that
the controller is configured to receive temperature information of the gate system temperature sensor and depending on this, controlling a mold filling operation of the die casting machine.
Priority Applications (2)
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PL10194415T PL2295172T3 (en) | 2007-05-24 | 2007-05-24 | Sprue block unit, sprue system and control unit for a diecast machine |
EP10194415.5A EP2295172B1 (en) | 2007-05-24 | 2007-05-24 | Sprue block unit, sprue system and control unit for a diecast machine |
Applications Claiming Priority (2)
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EP10194415.5A EP2295172B1 (en) | 2007-05-24 | 2007-05-24 | Sprue block unit, sprue system and control unit for a diecast machine |
EP07010321A EP1997571B1 (en) | 2007-05-24 | 2007-05-24 | Sprue block unit, sprue system and control unit for a diecast machine |
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EP07010321A Division EP1997571B1 (en) | 2007-05-24 | 2007-05-24 | Sprue block unit, sprue system and control unit for a diecast machine |
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EP07010321A Active EP1997571B1 (en) | 2007-05-24 | 2007-05-24 | Sprue block unit, sprue system and control unit for a diecast machine |
EP10194415.5A Active EP2295172B1 (en) | 2007-05-24 | 2007-05-24 | Sprue block unit, sprue system and control unit for a diecast machine |
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EP (2) | EP1997571B1 (en) |
JP (1) | JP5657857B2 (en) |
CN (1) | CN101310894B (en) |
AT (1) | ATE494088T1 (en) |
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2007
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Also Published As
Publication number | Publication date |
---|---|
EP2295172B1 (en) | 2014-12-31 |
HK1151259A1 (en) | 2012-01-27 |
PL1997571T3 (en) | 2011-05-31 |
EP1997571B1 (en) | 2011-01-05 |
HK1123253A1 (en) | 2009-06-12 |
ATE494088T1 (en) | 2011-01-15 |
JP5657857B2 (en) | 2015-01-21 |
US8104529B2 (en) | 2012-01-31 |
US20080289791A1 (en) | 2008-11-27 |
CN101310894B (en) | 2014-01-29 |
DE502007006186D1 (en) | 2011-02-17 |
PL2295172T3 (en) | 2015-07-31 |
EP1997571A1 (en) | 2008-12-03 |
US8302660B2 (en) | 2012-11-06 |
US20120145352A1 (en) | 2012-06-14 |
CN101310894A (en) | 2008-11-26 |
JP2008290153A (en) | 2008-12-04 |
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