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WO1996016786A1 - Injection moulding machine with two-plate closure unit - Google Patents

Injection moulding machine with two-plate closure unit Download PDF

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Publication number
WO1996016786A1
WO1996016786A1 PCT/EP1995/004727 EP9504727W WO9616786A1 WO 1996016786 A1 WO1996016786 A1 WO 1996016786A1 EP 9504727 W EP9504727 W EP 9504727W WO 9616786 A1 WO9616786 A1 WO 9616786A1
Authority
WO
WIPO (PCT)
Prior art keywords
plate
injection molding
mold carrier
pressure
carrier plate
Prior art date
Application number
PCT/EP1995/004727
Other languages
German (de)
French (fr)
Inventor
Herbert Pickel
Walter Wohlrab
Original Assignee
Krauss-Maffei Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Krauss-Maffei Ag filed Critical Krauss-Maffei Ag
Publication of WO1996016786A1 publication Critical patent/WO1996016786A1/en

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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
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/64—Mould opening, closing or clamping devices
    • B29C45/67—Mould opening, closing or clamping devices hydraulic
    • B29C45/6707—Mould opening, closing or clamping devices hydraulic without relative movement between the piston and the cylinder of the clamping device during the mould opening or closing movement

Definitions

  • the invention relates to an injection molding machine according to the preamble of claim 1.
  • An injection molding machine of this type is known from EP 0296410 B1, in which the closing force is introduced via the bars at the four corners of the movable platen, as a result of which the latter is exposed to considerable bending stress.
  • the movable platen is therefore very solid. However, this can only reduce the deflection of the platen, but it cannot be avoided that the remaining deflections will still have a negative effect, e.g. on the support of the movable platen on the machine frame via the slide shoe.
  • the movable platen is also loaded on one side by the mold half, which means that further bending loads and deformations have to be absorbed by the movable platen and the support.
  • the invention is therefore based on the object to largely eliminate the deflection of the movable platen or the fixed platen under clamping force and its negative effects in a two-platen injection molding machine.
  • the division of the movable or the fixed platen into a pressure plate and into a mold carrier plate enables a symmetrical force build-up in the mold carrier plate that largely excludes deformation due to the arrangement of several hydraulic devices (pressure pads). This can therefore be dimensioned relatively thin, since the bending lever arm, ie the distance from the spars to the respective hydraulic devices (pressure pads) is small and the deflection can be higher than with the solid, one-piece platen.
  • the movable platen is supported on the machine bed by the slide shoe attached to the mold carrier plate. The pressure plate thus acts as a counterbalancing torque to the tool part1 attached to the mold carrier plate.
  • the pressure plate also acts as a counterweight to compensate for the torque on the tool part attached to the mold carrier plate.
  • FIG. 1 is a side view of an injection molding machine with a closing pressure unit arranged in the movable platen
  • FIG. 2 shows the view according to section line III-III in FIG. 2,
  • Fig. 4 is a side view of an injection molding machine with a closing pressure unit arranged in the fixed platen and
  • FIG. 5 shows the side view of a modified injection molding machine according to FIG. 4.
  • FIG. 1 to 3 show an injection molding machine with a fixed platen 2 firmly connected to the machine frame 1, which is composed of four bars 3. These are detachably or lockably fastened in a movable platen 4 which is supported on the machine frame 1 in a longitudinally displaceable manner by means of a slide shoe 5.
  • the fixed platen 2 and the movable platen 4 are coupled to each other by means of rapid traverse cylinders 6 and 7.
  • the spars 3 are provided at the ends facing the fixed platen with teeth 8 with which the spars 3 are locked after penetrating the fixed platen 2 with the help of nut shells 9, 10.
  • the movable platen 4 consists of a pressure plate 11 and a mold carrier plate 12. In the pressure plate 11, the spars 3 are fastened, in which the mold carrier plate 12 is guided.
  • the mold carrier plate 12 is supported on the machine frame 1 via the slide shoe 5.
  • the fixed platen 2 and the movable platen 4 each carry a tool half 13 and 14.
  • the hydraulic device for generating the closing pressure is located between the mold carrier plate 12 and the pressure plate 11.
  • This consists of hydraulic pistons 15 arranged on the mold carrier plate 12, which are guided in hydraulic cylinders 16 formed in the pressure plate 11.
  • Four hydraulic cylinders are preferably arranged center-symmetrically to the spray axis S.
  • the pressure chambers of the hydraulic cylinders 16 are connected together to the hydraulic line 17 for the build-up of the closing pressure.
  • the hydraulic cylinders 16 have a large diameter, as a result of which a favorable force transmission from the pressure plate 11 to the mold carrier plate 12 is accomplished in accordance with a pressure cushion.
  • the hydraulic cylinders 16 are also connected to one another by lines 18, as a result of which uniform force transmission from the pressure plate 11 to the mold carrier plate 12 is ensured via all hydraulic cylinders 16.
  • Loose plungers 19 are fastened in the pressure plate 11. These penetrate the hydraulic pistons 15 and are guided in detaching cylinders 20 which are formed in the hydraulic pistons 15.
  • the fixed mold clamping plate 200 or 200 ' is composed of a pressure plate 110 or 110' and a mold carrier plate 120 or 120 ', the hydraulic devices for generating the Closing pressure are arranged.
  • the embodiments according to FIGS. 4 and 5 differ only in that in the embodiment according to FIG. 4 the pressure plate 110 and in the embodiment according to FIG. 5 the mold carrier plate 120 'is firmly connected to the machine bed 1. In the latter version, there is the advantage that the pressure plate 110 'balances the weight of the tool half (not shown) attached to the mold carrier plate 120'.
  • Hydraulic pistons 150 and 150 ' are arranged in the mold carrier plates 120 and 120', respectively, which in the pressure plate 110 and 110 'designed hydraulic cylinders 160 and 160'.
  • Loose plungers 190 and 190 ' are arranged in the pressure plates 110 and 110', respectively. These penetrate the hydraulic pistons 150 and 150 'and are guided in loose cylinders 20 which are formed in the hydraulic pistons 150 and 150'.
  • the bars 3 cannot be locked in the fixed mold mounting plate 200 or 200 'but in the movable mold mounting plate 40 or 40' in certain positions.
  • the locking mechanism consisting of toothings and nutshell shells which can be brought into engagement corresponds to the embodiment according to FIGS. 1 to 3.

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

Abstract

The proposed injection moulding machine has a fixed mould mounting plate (2) connected to the machine frame (1) and a movable mould mounting plate (4) supported on the machine frame so as to be capable of sliding longitudinally; the spars (3) are secured to the movable mould mounting plate (4) and can be locked into the fixed mould mounting unit (2), devices being provided to slide the movable mould mounting plate rapidly and generate closing pressure. In order to reduce the deformation of the movable mould mounting plate (4) when subjected to closing pressure and thus reduce the associated negative effects, it is proposed that the movable mould mounting plate (4) should comprise a pressure plate (11) and a mould carrier plate (12), the spars being secured in the pressure plate (11) and the mould carrier plate (12) being guided in the spars (3), and the devices (15, 16) for generating the closing pressure being arranged between the pressure plate (11) and the mould carrier plate.

Description

Spritzgießmaschine mit Zweiplatten-SchließeinheitInjection molding machine with two-platen clamping unit
Die Erfindung betrifft eine Spritzgießmaschine gemäß Oberbegriff des Patentanspruchs 1.The invention relates to an injection molding machine according to the preamble of claim 1.
Eine Spritzgießmaschine dieser Art ist aus der EP 0296410 Bl bekannt, bei der die Schließkraft über die Holme an den vier Ecken der bewegli¬ chen Formaufspannplatte eingeleitet wird, wodurch diese einer erhebli¬ chen Biegebelastung ausgesetzt ist. Die bewegliche Formaufspannplatte ist daher sehr massiv auszuführen. Damit läßt sich die Durchbiegung der Formaufspannplatte jedoch nur verringern, wobei aber nicht vermieden werden kann, daß sich restliche Durchbiegungen noch negativ auswirken, wie z.B. an der Abstützung der beweglichen Formaufspannplatte am Maschi¬ nenrahmen über den Gleitschuh. Die bewegliche Formaufspannplatte ist ferner durch die Herkzeughälfte einseitig belastet, wodurch weitere Biegebelastungen und Verformungen von der beweglichen Formaufspannplatte und der Abstützung aufgenommen werden müssen.An injection molding machine of this type is known from EP 0296410 B1, in which the closing force is introduced via the bars at the four corners of the movable platen, as a result of which the latter is exposed to considerable bending stress. The movable platen is therefore very solid. However, this can only reduce the deflection of the platen, but it cannot be avoided that the remaining deflections will still have a negative effect, e.g. on the support of the movable platen on the machine frame via the slide shoe. The movable platen is also loaded on one side by the mold half, which means that further bending loads and deformations have to be absorbed by the movable platen and the support.
Der Erfindung liegt daher die Aufgabe zugrunde, bei einer Zweiplatten- Spritzgießmaschine die Durchbiegung der beweglichen Formaufspannplatte oder der festen Formaufspannplatte unter Schließkraftbelastung und deren negative Auswirkungen weitestgehend zu eliminieren.The invention is therefore based on the object to largely eliminate the deflection of the movable platen or the fixed platen under clamping force and its negative effects in a two-platen injection molding machine.
Diese Aufgabe wird durch die Merkmale des Patentanspruchs 1 gelöst.This object is achieved by the features of patent claim 1.
Die Aufteilung der beweglichen oder der festen Formaufspannplatte in eine Druckplatte und in eine Formträgerplatte ermöglicht durch die Anordnung mehrerer Hydraulikeinrichtungen (Druckkissen) einen symmetri¬ schen, Verformungen weitgehend ausschließenden Kraftaufbau in der Formträgerplatte. Diese kann daher relativ dünn dimensioniert werden, da der Biege-Hebelarm d.h. der Abstand von den Holmen zu den jeweiligen Hydraulikeinrichtungen (Druckkissen) gering ist und die Durchbiegung höher als bei der festen, einstückigen Formaufspannplatte sein kann. In einer bevorzugten Ausführungsform ist die bewegliche Formaufspann¬ platte über den an der Formträgerplatte befestigten Gleitschuh am Maschinenbett abgestützt. Damit wirkt die Druckplatte als momenten- ausgleichendes Gegengewicht zu dem auf der Formträgerplatte befestigten Werkzeugtei1.The division of the movable or the fixed platen into a pressure plate and into a mold carrier plate enables a symmetrical force build-up in the mold carrier plate that largely excludes deformation due to the arrangement of several hydraulic devices (pressure pads). This can therefore be dimensioned relatively thin, since the bending lever arm, ie the distance from the spars to the respective hydraulic devices (pressure pads) is small and the deflection can be higher than with the solid, one-piece platen. In a preferred embodiment, the movable platen is supported on the machine bed by the slide shoe attached to the mold carrier plate. The pressure plate thus acts as a counterbalancing torque to the tool part1 attached to the mold carrier plate.
In gleicher Weise kann es vorteilhaft sein, die feste Formaufspannplatte so auszubilden, daß die Formträgerplatte fest mit dem Maschinenbett verbunden ist. Damit wirkt ebenfalls die Druckplatte als momentenaus- gleichendes Gegengewicht zu dem auf der Formträgerplatte befestigten Werkzeugteil .In the same way, it can be advantageous to design the fixed platen so that the mold carrier plate is firmly connected to the machine bed. Thus, the pressure plate also acts as a counterweight to compensate for the torque on the tool part attached to the mold carrier plate.
Infolge der Tatsache, daß der Schließdruckaufbau in der beweglichen oder in der festen Formaufspannplatte erfolgt, ist in der jeweils gegenüber¬ liegenden Formaufspannplatte nur die Verriegelung der Holme vorzusehen. Die Formhöheneinstellung, bzw. die Abstimmung auf die Zahnteilung der Holme an den Verriegelungsstellen kann zentral und einheitlich für alle vier Holme durch die Druckmittelbeaufschlagung der Hydraulikeinrichtung bzw. der Druckkissen erfolgen, die hydraulisch untereinander in Verbin¬ dung stehen, über Wegaufnehmer ist dabei eine Feineinstellung möglich.As a result of the fact that the closing pressure builds up in the movable or in the fixed platen, only the locking of the spars is to be provided in the opposing platen. The mold height adjustment, or the adjustment to the tooth pitch of the bars at the locking points, can be carried out centrally and uniformly for all four bars by pressurizing the hydraulic device or the pressure cushions, which are hydraulically connected to one another; fine adjustment is possible via displacement transducers .
Durch die Aufteilung der beweglichen oder der festen Formträgerplatte in zwei Platten und durch die Anordnung von Druckkissen zwischen den beiden Platten ergeben sich günstige Kraftverteilungen, die wesentlich geringe¬ re Biegebeanspruchungen zur Folge haben als bei Zweiplatten-Spritzgieß- maschinen, bei denen der Schließdruck über Hydraulikeinrichtungen erzeugt wird, die in der festen Formaufspannplatte auf die darin verrie¬ gelten Holme wirken. Nach der Erfindung können die Platten daher wesent¬ lich kleiner ausgeführt werden, wodurch ein geringeres Bauvolumen, ein geringeres Gewicht und eine Kostenersparnis erreichbar sind. Ein Ausführungsbeispiel der Erfindung wird anhand der Zeichnung näher erläutert. Es zeigt in schematischer Darstellung:The division of the movable or fixed mold carrier plate into two plates and the arrangement of pressure cushions between the two plates result in favorable force distributions which result in considerably lower bending stresses than in two-plate injection molding machines in which the closing pressure is via hydraulic devices is generated, which act in the fixed platen on the bars locked therein. According to the invention, the plates can therefore be made significantly smaller, as a result of which a smaller construction volume, a lower weight and a cost saving can be achieved. An embodiment of the invention is explained in more detail with reference to the drawing. It shows in a schematic representation:
Fig. 1 die Seitenansicht einer Spritzgießmaschine mit einer in der be¬ weglichen Formaufspannplatte angeordneten Schließdruckeinheit,1 is a side view of an injection molding machine with a closing pressure unit arranged in the movable platen,
Fig. 2 das linke Teilstück der Spritzgießmaschine nach Fig. 1 mit der be¬ weglichen Formaufspannplatte in der Ansicht gemäß der Schnittlinie II-II in Fig. 3,2 the left part of the injection molding machine according to FIG. 1 with the movable platen in the view according to the section line II-II in FIG. 3,
Fig. 3 die Ansicht gemäß der Schnittlinie III-III in Fig. 2,3 shows the view according to section line III-III in FIG. 2,
Fig. 4 die Seitenansicht einer Spritzgießmaschine mit einer in der festen Formaufspannplatte angeordneten Schließdruckeinheit undFig. 4 is a side view of an injection molding machine with a closing pressure unit arranged in the fixed platen and
Fig. 5 die Seitenansicht einer modifizierten Spritzgießmaschine nach Fig. 4.5 shows the side view of a modified injection molding machine according to FIG. 4.
Die Fig. 1 bis 3 zeigen eine Spritzgießmaschine mit einer fest mit dem Maschinenrahmen 1 verbundenen festen Formaufspannplatte 2, die von vier Holmen 3 duchsetzt ist. Diese sind in einer beweglichen Formaufspann¬ platte 4 lösbar bzw. verriegelbar befestigt, die über einen Gleitschuh 5 längsverschieblich auf dem Maschinenrahmen 1 abgestützt ist. Die feste Formaufspannplatte 2 und die bewegliche Formaufspannplatte 4 sind mittels Eilgangzylindem 6 und 7 miteinander gekoppelt.1 to 3 show an injection molding machine with a fixed platen 2 firmly connected to the machine frame 1, which is composed of four bars 3. These are detachably or lockably fastened in a movable platen 4 which is supported on the machine frame 1 in a longitudinally displaceable manner by means of a slide shoe 5. The fixed platen 2 and the movable platen 4 are coupled to each other by means of rapid traverse cylinders 6 and 7.
Die Holme 3 sind an den der festen Formaufspannplatte zugewandten Enden mit Verzahnungen 8 versehen, mit denen die Holme 3 nach dem Durchdringen der festen Formaufspannplatte 2 mit Hilfe von Mutternhalbschalen 9, 10 verriegelt sind. Die bewegliche Formaufspannplatte 4 besteht aus einer Druckplatte 11 und einer Formträgerplatte 12. In der Druckplatte 11 sind die Holme 3 befestigt, in denen die Formträgerplatte 12 geführt ist. Die Formträger¬ platte 12 ist über den Gleitschuh 5 am Maschinenrahmen 1 abgstützt. Die feste Fromaufspannplatte 2 und die bewegliche Formaufspannplatte 4 tragen je eine Werkzeughälfte 13 und 14.The spars 3 are provided at the ends facing the fixed platen with teeth 8 with which the spars 3 are locked after penetrating the fixed platen 2 with the help of nut shells 9, 10. The movable platen 4 consists of a pressure plate 11 and a mold carrier plate 12. In the pressure plate 11, the spars 3 are fastened, in which the mold carrier plate 12 is guided. The mold carrier plate 12 is supported on the machine frame 1 via the slide shoe 5. The fixed platen 2 and the movable platen 4 each carry a tool half 13 and 14.
Zwischen der Formträgerplatte 12 und der Druckplatte 11 befindet sich die Hydraulikeinrichtung zur Erzeugung des Schließdruckes. Diese besteht aus an der Formträgerplatte 12 angeordneten Hydraulikkolben 15, die in in der Druckplatte 11 ausgebildeten Hydraulikzylindern 16 geführt sind. Vorzugsweise sind vier Hydraulikzylinder zentrumssymmetrisch zur Spritz¬ achse S angeordnet. Die Druckräume der Hydraulikzylinder 16 sind gemein¬ sam an die Hydraulikleitung 17 für den Schließdruckaufbau angeschlossen. Die Hydraulikzylinder 16 weisen einen großen Durchmesser auf, wodurch entsprechend einem Druckkissen eine günstige Kraftübertragung von der Druckplatte 11 auf die Formträgerplatte 12 bewerkstelligt wird. Die Hydraulikzylinder 16 stehen ferner durch Leitungen 18 miteinander in Verbindung, wodurch über alle Hydraulikzylinder 16 eine gleichförmige Kraftübertagung von der Druckplatte 11 auf die Formträgerplatte 12 sichergestellt ist.The hydraulic device for generating the closing pressure is located between the mold carrier plate 12 and the pressure plate 11. This consists of hydraulic pistons 15 arranged on the mold carrier plate 12, which are guided in hydraulic cylinders 16 formed in the pressure plate 11. Four hydraulic cylinders are preferably arranged center-symmetrically to the spray axis S. The pressure chambers of the hydraulic cylinders 16 are connected together to the hydraulic line 17 for the build-up of the closing pressure. The hydraulic cylinders 16 have a large diameter, as a result of which a favorable force transmission from the pressure plate 11 to the mold carrier plate 12 is accomplished in accordance with a pressure cushion. The hydraulic cylinders 16 are also connected to one another by lines 18, as a result of which uniform force transmission from the pressure plate 11 to the mold carrier plate 12 is ensured via all hydraulic cylinders 16.
In der Druckplatte 11 sind Losreißkolben 19 befestigt. Diese durchsetzen die Hydraulikkolben 15 und sind in Losreißzylindern 20 geführt, die in den Hydraulikkolben 15 ausgebildet sind.Loose plungers 19 are fastened in the pressure plate 11. These penetrate the hydraulic pistons 15 and are guided in detaching cylinders 20 which are formed in the hydraulic pistons 15.
In den Spritzgießmaschinen nach den Fig. 4 und 5 ist die feste Formauf¬ spannplatte 200 bzw. 200' jeweils aus einer Druckplatte 110 bzw. 110' und einer Formträgerplatte 120 bzw. 120' zusammengesetzt, wobei zwischen den beiden Platten die Hydraulikeinrichtungen zur Erzeugung des Schlie߬ druckes angeordnet sind. Die Ausführungsformen nach den Fig. 4 und 5 unterscheiden sich nur dadurch, daß bei der Ausführungsform nach Fig. 4 die Druckplatte 110 und bei der Ausführungsform nach Fig. 5 die Formträgerplatte 120' fest mit dem Maschinenbett 1 verbunden ist. Bei letzterer Version besteht der Vorteil, daß die Druckplatte 110' einen Gewichtsausgleich zu der auf der Formträgerplatte 120' befestigen Werkzeughälfte (nicht dargestellt) schafft.4 and 5, the fixed mold clamping plate 200 or 200 'is composed of a pressure plate 110 or 110' and a mold carrier plate 120 or 120 ', the hydraulic devices for generating the Closing pressure are arranged. The embodiments according to FIGS. 4 and 5 differ only in that in the embodiment according to FIG. 4 the pressure plate 110 and in the embodiment according to FIG. 5 the mold carrier plate 120 'is firmly connected to the machine bed 1. In the latter version, there is the advantage that the pressure plate 110 'balances the weight of the tool half (not shown) attached to the mold carrier plate 120'.
Die Hydraulikeinrichtungen der Ausführungsformen nach den Fig. 4 und 5 entsprechen denen der Ausführungsform nach den Fig. 1 bis 3. So sind in den Formträgerplatten 120 bzw. 120' Hydraulikkolben 150 bzw. 150' ange¬ ordnet, die in in der Druckplatte 110 bzw. 110' ausgebildeten Hydrau¬ likzylindern 160 bzw. 160' geführt sind.The hydraulic devices of the embodiments according to FIGS. 4 and 5 correspond to those of the embodiment according to FIGS. 1 to 3. Hydraulic pistons 150 and 150 'are arranged in the mold carrier plates 120 and 120', respectively, which in the pressure plate 110 and 110 'designed hydraulic cylinders 160 and 160'.
In den Druckplatten 110 bzw. 110' sind jeweils Losreißkolben 190 bzw. 190' angeordnet. Diese durchsetzen die Hydraulikkolben 150 bzw. 150' und sind in Losreißzylindern 20 geführt, die in den Hydraulikkolben 150 bzw. 150' ausgebildet sind.Loose plungers 190 and 190 'are arranged in the pressure plates 110 and 110', respectively. These penetrate the hydraulic pistons 150 and 150 'and are guided in loose cylinders 20 which are formed in the hydraulic pistons 150 and 150'.
Im Gegensatz zu der Ausführungsform nach den Fig. 1 bis 3 sind die Holme 3 nicht in der festen Formaufspannplatte 200 bzw. 200' sondern in der beweglichen Formaufspannplatte 40 bzw. 40' in bestimmten Stellungen verriegelbar. Der aus Verzahnungen und damit in Eingriff bringbaren Mutternhaibschalen bestehende Verriegelungsmechanismus entspricht dabei der Ausführungsform nach den Fig. 1 bis 3. In contrast to the embodiment according to FIGS. 1 to 3, the bars 3 cannot be locked in the fixed mold mounting plate 200 or 200 'but in the movable mold mounting plate 40 or 40' in certain positions. The locking mechanism consisting of toothings and nutshell shells which can be brought into engagement corresponds to the embodiment according to FIGS. 1 to 3.

Claims

Patentansprüche claims
1. Spritzgießmaschine mit einer an einem Maschinenbett befestigten festen Formaufspannplatte und einer auf dem Maschinenbett längsver- schieblich über einen Gleitschuh abgestützten beweglichen Formaufspann¬ platte, wobei die feste und die bewegliche Formaufspannplatte von Holmen durchsetzt sind, die mit einer der beiden Platten fest verbunden und in der anderen Platte verriegelbar sind, mit einer mit der festen und der beweglichen Formaufspannplatte gekoppelten Eilgangvorrichtung und mit einer Hydraulikvorrichtung zur Erzeugung des Schließdruckes, dadurch gekennzeichnet, daß die bewegliche Formaufspannplatte (4,40,40') oder die feste Formaufspannplatte (2,200,200') jeweils aus zwei zueinander parallelen Platten besteht, von denen die eine Platte die Druckplatte (11,110,110') ist, die sich an den Holmen (3) abstützt, und die andere Platte die in den Holmen (3) verschieblich gelagerte Formträgerplatte (12,120,120') ist, wobei zwischen der Druckplatte tll ,110,110') und der Formträgerplatte (12,120,120') die Hydraulikeinrichtung zur Erzeugung des Schließdruckes angeordnet ist.1. Injection molding machine with a fixed mold mounting plate attached to a machine bed and a movable mold mounting plate which is supported on the machine bed so as to be longitudinally displaceable by means of a sliding shoe, the fixed and the movable mold mounting plate being penetrated by spars which are firmly connected to one of the two plates and in of the other plate can be locked, with a rapid traverse device coupled to the fixed and the movable platen and with a hydraulic device for generating the closing pressure, characterized in that the movable platen (4, 40, 40 ') or the fixed platen (2,200,200') each consists of two mutually parallel plates, one of which is the pressure plate (11, 110, 110 '), which is supported on the bars (3), and the other plate is the mold carrier plate (12, 120, 120') slidably mounted in the bars (3), whereby between the pressure plate tll, 110, 110 ') and the mold carrier plate (12, 120, 120 ') the hydraulic device for generating the closing pressure is arranged.
2. Spritzgießmaschine nach Anspruch 1, dadurch gekennzeichnet, daß die bewegliche Formaufspannplatte (4) aus zwei zueinander parallelen Platten besteht, von denen die eine Platte die Druckplatte (11) ist, mit der die Holme (3) fest verbunden sind, und die andere Platte die in den Holmen (3) geführte Formträgerplatte (12) ist.2. Injection molding machine according to claim 1, characterized in that the movable platen (4) consists of two mutually parallel plates, one of which is the pressure plate (11) with which the bars (3) are fixedly connected, and the other Plate is the mold carrier plate (12) guided in the spars (3).
3. Spritzgießmaschine nach Anspruch 1, dadurch gekennzeichnet, daß die feste Formaufspannplatte (200) aus zwei zueinander parallelen Platten besteht, von denen die eine Platte die Druckplatte (110) ist, mit der die Holme (3) fest verbunden sind und die mit dem Maschinenbett (1) fest verbunden ist, und die andere Platte die in den Holmen (3) geführte Formträgerplatte (120) ist.3. Injection molding machine according to claim 1, characterized in that the fixed platen (200) consists of two mutually parallel plates, one of which is the pressure plate (110), with which the bars (3) are firmly connected and which is firmly connected to the machine bed (1), and the other plate is the mold carrier plate (120) guided in the bars (3).
4. Spritzgießmaschine nach Anspruch 1, dadurch gekennzeichnet, daß die feste Formaufspannplatte (200') aus zwei zueinander parallelen Platten besteht, von denen die eine Platte die Druckplatte (110') ist, mit der die Holme (3) fest verbunden sind, und die andere Platte die Formträgerplatte (120') Ist, in der die Holme (3) abgestützt sind und die mit dem Maschinenbett (1) fest verbunden ist.4. Injection molding machine according to claim 1, characterized in that the fixed platen (200 ') consists of two mutually parallel plates, one of which is the pressure plate (110') with which the spars (3) are firmly connected, and the other plate is the mold carrier plate (120 '), in which the bars (3) are supported and which is firmly connected to the machine bed (1).
5. Spritzgießmaschine nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Formaufträgerplatte (12) über den an der Formträgerplatte (12) befestigten Gleitschuh (5) am Maschinenbett (1) abgestützt ist.5. Injection molding machine according to one of claims 1 or 2, characterized in that the mold carrier plate (12) on the mold carrier plate (12) attached to the slide shoe (5) is supported on the machine bed (1).
6. Spritzgießmaschine nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Hydraulikeinrichtung aus einem oder mehreren an der Formträgerplatte (12,120,120') angeordneten Hydraulikkolben (15,150, 150') besteht, die in in der Druckplatte (11,110,110') ausgebildeten Hydraulikzylindern (16,160,160') geführt sind.6. Injection molding machine according to one of claims 1 to 5, characterized in that the hydraulic device consists of one or more hydraulic pistons (15, 150, 150 ') arranged on the mold carrier plate (12, 120, 120'), which are formed in the pressure plate (11, 110, 110 ') hydraulic cylinders ( 16,160,160 ') are performed.
7. Spritzgießmaschine nach Anspruch 6, dadurch gekennzeichnet, daß in der Druckplatte (11,110,110') Losreißkolben (19,190,190') befestigt sind, die die Hydraulikkolben (15,150,150') durchsetzen und in in den Hydraulikkolben (15,150,150') ausgebildeten Losreißzylindern (20) geführt sind.7. Injection molding machine according to claim 6, characterized in that in the pressure plate (11, 110, 110 ') detaching pistons (19, 190, 190') are attached which pass through the hydraulic pistons (15, 150, 150 ') and are guided in the detaching cylinders (20) formed in the hydraulic pistons (15, 150, 150') .
8. Spritzgießmaschine nach einem der Ansprüche 6 oder 7, dadurch gekennzeichnet, daß nach der Maßgabe einer gleichförmigen Schließkraft¬ einleitung in die Formträgerplatte (12,120,120') vier Hydraulikeinrich¬ tungen Zentrumssymmetrisch zur Spritzachse S angeordnet sind. 8. Injection molding machine according to one of claims 6 or 7, characterized in that according to the requirement of a uniform closing force introduction into the mold carrier plate (12, 120, 120 ') four hydraulic devices are arranged in a center-symmetrical manner with respect to the injection axis S.
9. Spritzgießmaschine nach einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, daß nach der Maßgabe einer gleichförmigen Schließkraft¬ einleitung in die Formträgerpl tte (12,120,120') die Hydraulikzylinder (16) nach Art eines Druckkissens jeweils einen großen Durchmesser aufweisen, der mindestens dem l,5fachen des Holmdurchmessers entspricht.9. Injection molding machine according to one of claims 6 to 8, characterized in that according to the requirement of a uniform closing force introduction into the mold carrier plate (12, 120, 120 '), the hydraulic cylinders (16) each have a large diameter in the manner of a pressure cushion, which has at least the l , Corresponds to 5 times the spar diameter.
10. Spritzgießmaschine nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die Holme (3) jeweils mit einem Ende fest mit der Druckplatte (11,110,110') verbunden sind und jeweils mit dem anderen Ende verriegelbar in der gegenüberliegenden Formträgerplatte (12,120, 120') befestigt sind. 10. Injection molding machine according to one of claims 1 to 9, characterized in that the bars (3) are each fixedly connected at one end to the pressure plate (11, 110, 110 ') and can be locked at the other end in the opposite mold carrier plate (12, 120, 120') ) are attached.
PCT/EP1995/004727 1994-12-02 1995-11-30 Injection moulding machine with two-plate closure unit WO1996016786A1 (en)

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DEP4443008.6 1994-12-02
DE4443008 1994-12-02

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DE102010036204A1 (en) 2010-09-02 2012-03-08 Robert Bosch Gmbh Closing unit useful e.g. for injection molding-die casting, comprises fixed tool clamping plate and movable tool clamping plate, which are movable using electric or hydraulic drive, and hydraulically operated holding cylinder

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