DE10243248A1 - Injection moulding machine plastifying and injection unit, comprises a worm located in an injection cylinder, a common drive motor, and a pump - Google Patents

Injection moulding machine plastifying and injection unit, comprises a worm located in an injection cylinder, a common drive motor, and a pump Download PDF

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Publication number
DE10243248A1
DE10243248A1 DE2002143248 DE10243248A DE10243248A1 DE 10243248 A1 DE10243248 A1 DE 10243248A1 DE 2002143248 DE2002143248 DE 2002143248 DE 10243248 A DE10243248 A DE 10243248A DE 10243248 A1 DE10243248 A1 DE 10243248A1
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Germany
Prior art keywords
injection
motor
injection unit
pump
plasticizing
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
Application number
DE2002143248
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German (de)
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DE10243248B4 (en
Inventor
Kerstin Dipl.-Ing. Henke
Holger Dipl.-Ing. Schmidt
Dietmar Dipl.-Ing. Scholz
Volker Dipl.-Ing. Wellhöfer
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Sumitomo SHI Demag Plastics Machinery GmbH
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Demag Ergotech GmbH
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Priority to DE2002143248 priority Critical patent/DE10243248B4/en
Publication of DE10243248A1 publication Critical patent/DE10243248A1/en
Application granted granted Critical
Publication of DE10243248B4 publication Critical patent/DE10243248B4/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
    • B29C45/50—Axially movable screw
    • B29C45/5008—Drive means therefor
    • 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
    • B29C2045/1784—Component parts, details or accessories not otherwise provided for; Auxiliary operations not otherwise provided for
    • B29C2045/1792—Machine parts driven by an electric motor, e.g. electric servomotor
    • B29C2045/1794—Machine parts driven by an electric motor, e.g. electric servomotor by a rotor or directly coupled electric motor, e.g. using a tubular shaft motor
    • 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
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
    • B29C45/50—Axially movable screw
    • B29C45/5008—Drive means therefor
    • B29C2045/5024—Drive means therefor screws rotated by the coaxial rotor of an electric motor
    • 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
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
    • B29C45/50—Axially movable screw
    • B29C45/5008—Drive means therefor
    • B29C2045/5032—Drive means therefor using means for detecting injection or back pressures
    • B29C2045/5036—Drive means therefor using means for detecting injection or back pressures back pressure obtaining means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
    • B29C45/50—Axially movable screw
    • B29C45/5008—Drive means therefor
    • B29C2045/5068—Drive means therefor mechanical drive means in series with hydraulic drive means for axially movable screw

Abstract

An injection moulding machine plastifying and injection unit, comprises a worm (19) located in an injection cylinder (20), and a common drive motor for rotational and translational movement of the worm. The translational movement is achieved using a pressurising agent pump (12) which is connected to the motor, and a cylinder (11). An injection moulding machine plastifying and injection unit, comprises a worm (19) located in an injection cylinder (20), and a common drive motor for rotational and translational movement of the worm. The translational movement is achieved using a pressurising agent pump (12) which is connected to the motor, and a cylinder (11). Hydraulic lines (13,14) connect the cylinder and pump inlet and outlet. The motor is a hollow shaft motor (1), with a rotor hollow shaft (2) coupled to the drive shaft of the worm. The drive motor is a high moment hollow shaft servo motor.

Description

Die Erfindung betrifft eine Plastifizier- und Einspritzeinheit einer Kunststoffspritzgießmaschine gemäß dem Oberbegriff von Patentanspruch 1.The invention relates to a plasticizing and injection unit of a plastic injection molding machine according to the preamble of claim 1.

Aus der gattungsbildenden EP 0 785 059 B1 ist eine Plastifizier- und Einspritzeinheit einer Kunststoffspritzgießmaschine bekannt, bei der für die lineare und die rotatorische Bewegung der Plastifizierschnecke ein gemeinsamer servoelektrischer Antriebsmotor verwendet wird. Dieser Antriebsmotor ist für die Linearbewegung an eine förderrichtungsumkehrbare Hydraulikpumpe gekoppelt, die in einem geschlossenen Hydraulikkreis förderrichtungsabhängig die Linearbewegung der Schnecke über Gleichgangzylinder durchführt. Der Rotationsantrieb wird über ein Getriebe zur Anpassung des Antriebsmomentes an das geforderte Antriebsmoment auf die Schnecke geleitet. Die gleichzeitig zum Rotationsantrieb erforderliche passive Linearkraft an der Schnecke, die einen Staudruck auf die geförderte Masse ausübt, erzeugt am Gleichgangzylinder des Linearantriebs einen Ölstrom zur Hydraulikpumpe, die in dieser Phase als Ölmotor arbeitet und das entstehende Drehmoment, durch starre Kopplung der Pumpe mit dem Motor, als Antriebsmoment auf diesen geleitet wird. Durch diese Art der Kopplung wird in einfacher Weise Leistung zurückgewonnen. Die Pumpe wird quasi als Bremse im Linearkreis eingesetzt und die Bremsenergie wird wieder für de Rotationsbetrieb mitverwendet. Die Staudruckregelung und als Folge die Größe der Bremsenergie erfolgt durch Veränderung der Pumpen- bzw. Motorschluckmenge, die einem separaten Regelkreis unterliegt.From the generic EP 0 785 059 B1 is known a plasticizing and injection unit of a plastic injection molding machine, in which a common servo-electric drive motor is used for the linear and rotary movement of the plasticizing screw. For the linear movement, this drive motor is coupled to a hydraulic pump which is reversible in the direction of conveyance and which carries out the linear movement of the screw via synchronous cylinders in a closed hydraulic circuit depending on the conveying direction. The rotary drive is directed to the screw via a gearbox to adapt the drive torque to the required drive torque. The passive linear force on the worm, which is simultaneously required for the rotary drive and exerts a dynamic pressure on the conveyed mass, generates an oil flow to the hydraulic pump at the synchronous cylinder of the linear drive, which in this phase works as an oil motor and the resulting torque through rigid coupling of the pump to the motor , as drive torque is directed to this. This type of coupling makes it easy to recover power. The pump is used as a brake in the linear circuit and the braking energy is used again for the rotation operation. The dynamic pressure control and, as a result, the size of the braking energy is carried out by changing the pump or motor intake quantity, which is subject to a separate control circuit.

Nachteilig an dieser bekannten Plastifizier- und Einspritzeinheit ist die Verwendung eines mechanischen Getriebes für die Untersetzung der Motordrehzahl des Servomotors auf die für die Plastifizierschnecke höchstzulässige Drehzahl. Für kleine Plastifizierschneckendurchmesser ist die Massenträgheit des gesamten mehrstufigen Getriebes im Verhältnis zu der Massenträgheit der Schnecke viel zu hoch. Die Folge ist z. B. ein Nachlaufen des Getriebes und damit der Schneckenkupplungswelle bei Dosierstop. Dies hat zur Folge, dass die Konstanz der aufgeschmolzenen Kunststoffmenge sehr ungenügend ist. Aufgrund der verhältnismäßig hohen Gesamtmasse der Einspritzeinheit, die den Spritzhub mit ausführen muss, ist die Regelgüte der Prozessparameter ebenfalls unzufriedenstellend. Versuche haben gezeigt, dass die Regelbarkeit des Einspritz- und Plastifizierprozesses mit der aus der EP 0 785 059 bekannten Einspritzeinheit dann nicht beherrschbar ist, wenn nur wenige Gramm Material zu verarbeiten sind.A disadvantage of this known plasticizing and injection unit is the use of a mechanical gear for reducing the motor speed of the servo motor to the maximum permissible speed for the plasticizing screw. For small plasticizing screw diameters, the mass inertia of the entire multi-stage gear is far too high in relation to the mass inertia of the screw. The result is e.g. B. a running of the gear and thus the worm clutch shaft at dosing stop. As a result, the consistency of the melted amount of plastic is very inadequate. Due to the relatively high total mass of the injection unit, which must also carry out the injection stroke, the control quality of the process parameters is also unsatisfactory. Tests have shown that the controllability of the injection and plasticizing process with that of the EP 0 785 059 known injection unit is then not controllable if only a few grams of material can be processed.

Ausgehend hiervon liegt der Erfindung die Aufgabe zugrunde, eine Plastifizier- und Einspritzeinheit einer Kunststoffspritzgießmaschine anzugeben, mit der eine höhere Konstanz der aufgeschmolzenen Kunststoffmenge erreicht wird, insbesondere bei kleinen Schussgewichten und mit der darüberhinaus ein sehr geräuscharmer und energieeffizienter Betrieb möglich ist.The invention is based on this based on the task of a plasticizing and injection unit plastic injection molding machine specify with which a higher Consistency of the melted amount of plastic is achieved, in particular with small shot weights and with which it is also very quiet and energy efficient operation possible is.

Die Lösung dieser Aufgabe erfolgt durch eine Plastifizier- und Einspritzeinheit gemäß Anspruch 1. Vorteilhafte Ausgestaltungen und Weiterentwicklungen finden sich in den Unteransprüchen.This task is solved by a plasticizing and injection unit according to claim 1. There are advantageous refinements and developments in the subclaims.

Dadurch, dass ein Hohlwellen-Motor vorgesehen ist, der direkt an die Schneckenantriebswelle gekuppelt ist, kann auf einen üblichen Servomotor und ein mechanisches Getriebe verzichtet werden. Die bewegte Masse und vor allem das Massenträgheitsmoment der rotierenden Antriebselemente ist gegenüber dem zitierten Stand der Technik signifikant kleiner und die Dynamik des Systems damit signifikant höher. Ferner ist das Bauvolumen der Einspritzeinheit durch den Einsatz des Direktantriebs erheblich kleiner und die Herstellungskosten liegen niedriger. Ausserdem eignet sich die erfindungsgemäße Plastifizier- und Einspritzeinheit in besonderer Weise für kleine Spritzgießmaschinen.The fact that a hollow shaft motor is provided, which is coupled directly to the worm drive shaft is can on a usual Servomotor and a mechanical gear can be dispensed with. The moving mass and especially the moment of inertia of the rotating Drive elements is opposite the cited prior art significantly smaller and the dynamics the system significantly higher. Furthermore, the volume of the injection unit is due to the use of the direct drive considerably smaller and the manufacturing costs are lower. The plasticizing agent according to the invention is also suitable and injection unit in a special way for small injection molding machines.

Nachfolgend soll die Erfindung anhand eines Ausführungsbeispiels und unter Bezugnahme auf die 1 näher erläutert werden.In the following, the invention is to be illustrated using an exemplary embodiment and with reference to FIG 1 are explained in more detail.

Gemäß der 1 weist die Erfindung für die lineare und rotatorische Bewegung einen gemeinsamen Hochmomenten-Hohlwellen-Servomotor 1 auf. Dieser Hochmomenten-Hohlwellen-Servomotor ist über die Rotor-Hohlwelle 2 einerseits mittels einer Mitnehmerwelle 3 und dem Freilauf oder einer schaltbaren Kupplung 4 mit der Schneckenantriebswelle 5 direkt verbunden. Ein unkontrolliertes Zurückdrehen der Schneckenantriebswelle 5, die in den Lagern 9 und 10 axial und radial geführt ist, wird mit der Rücklaufsperre 6, die mit dem Antriebswellenlagergehäuse 7 verbunden ist, verhindert, z. B. während des Einspritzvorganges. Gleichzeitig steht die Rotor-Hohlwelle 2 ständig über die Mitnehmerwelle 3 und der Kupplung 8 mit der förderrichtungsumkehrbaren Hydraulikpumpe 12 im Eingriff, die in einem geschlossenen Hydraulikkreislauf förderrichtungsabhängig die Linearbewegung der Schnecke über Gleichgangzylinder 11 durchführt. Die Staudruckregelung erfolgt durch Veränderung der Pumpen- bzw. Motorschluckvolumen, die einem separaten Regelkreis 15, 16, 17 und 18 unterliegt. Der Linearantrieb der Schnecke wird über Gleichgangzylinder 11 im geschlossenen Kreis mit Pumpen, die mit einer schwenkwinkelabhängigen Förderrichtungsumkehr ausgestattet sein können, durchgeführt. Für den aktiven Linearantrieb, der immer eine Pumpendrehrichtung entgegen des Rotationsantriebes bedeutet, wird entsprechend der Bewegungsrichtung die Fördermenge der Pumpe verstellt. Die Regelung von Druck und Menge der Pumpe kann sowohl durch Schwenkwinkeländerung der Pumpe, als auch durch Drehzahl- und Antriebsmomentenbeeinflussung durch den Hochmomenten-Hohlwellen-Servomotor erfolgen.According to the 1 the invention has for the linear and rotary movement a common high-torque hollow shaft servo motor 1 on. This high torque hollow shaft servo motor is via the rotor hollow shaft 2 on the one hand by means of a drive shaft 3 and the freewheel or a switchable clutch 4 with the worm drive shaft 5 directly connected. An uncontrolled turning back of the worm drive shaft 5 that in the camps 9 and 10 is guided axially and radially, with the backstop 6 that with the drive shaft bearing housing 7 is connected, e.g. B. during the injection process. At the same time there is the hollow rotor shaft 2 constantly on the drive shaft 3 and the clutch 8th with the reversible hydraulic pump 12 engaged, the linear movement of the screw via synchronous cylinders in a closed hydraulic circuit depending on the conveying direction 11 performs. The dynamic pressure control takes place by changing the pump or motor intake volume, which is a separate control loop 15 . 16 . 17 and 18 subject. The linear drive of the worm is via a synchronous cylinder 11 in a closed circuit with pumps that can be equipped with a swivel angle-dependent reversal of the conveying direction. For the active linear drive, which always means a pump rotation direction opposite to the rotary drive, the delivery rate of the pump is adjusted according to the direction of movement. The pressure and quantity of the pump can be controlled by changing the swivel angle of the pump as well as by influencing the speed and drive torque through the high-torque hollow shaft servo motor.

Der Staudruck zwischen Schnecke und Spritzzylinder wird direkt auf den Gleichgangzylinder und damit auf den geschlossenen Hydraulikkreislauf übertragen. Durch Einsatz einer Pumpe, bei der die Förderströmrichtung des hydraulischen Mediums beliebig einstellbar ist, kann mit einfachen Mitteln unabhängig von der Drehrichtung des Elektromotors der Staudruck der Kunststoffmasse exakt eingestellt werden.The dynamic pressure between the screw and the injection cylinder is directly on the synchronous cylinder and thus transferred to the closed hydraulic circuit. By using a pump in which the direction of flow of the hydraulic medium can be set as desired, the dynamic pressure of the plastic mass can be precisely adjusted with simple means regardless of the direction of rotation of the electric motor.

11
Hochmomenten-Hohlwellen-ServomotorHigh torque hollow shaft servomotor
22
Rotor-HohlwelleRotor hollow shaft
33
Mitnehmerwelleclutch shaft
44
Freilauf oder Kupplung, schaltbarfreewheel or clutch, switchable
55
SchneckenantriebswelleWorm drive shaft
66
RücklaufsperreBackstop
77
AntriebswellenlagergehäuseDrive shaft bearing housing
88th
Kupplungclutch
99
Lager axialcamp axial
1010
Lager radialcamp radial
1111
GleichgangzylinderRod cylinders
1212
DruckmittelpumpeHydraulic pump
1313
erste hydraulische Leitung vorfirst hydraulic line before
1414
zweite hydraulische Leitung zurücksecond hydraulic line back
1515
Element zur Verstellungelement for adjustment
1616
Regeleinrichtungcontrol device
1717
Drucksensorpressure sensor
1818
MessleitungMeasurement line
1919
Schneckeslug
2020
Spritzzylinderinjection cylinder

Claims (5)

Plastifizier- und Einspritzeinheit einer Kunststoffspritzgießmaschine mit einer in einem Spritzzylinder (20) angeordneten Schnecke (19), mit einem gemeinsamen Antriebsmotor für die rotatorische und die translatorische Bewegung der Schnecke (19), wobei für die translatorische Bewegung der Schnecke (19) eine mit dem Antriebsmotor verbundene Druckmittelpumpe (12) und wenigstens ein von dieser bewegter Gleichgangzylinder (11) vorgesehen sind, wobei Hydraulikleitungen (13, 14) vorgesehen sind, die die Ein- und Ausgänge der Gleichgangzylinder (11) und der Druckmittelpumpe (12) miteinander verbinden, so dass ein geschlossener Hydraulikkreis gebildet wird, und wobei die Druckmittelpumpe (12) auch als Druckmittelmotor arbeiten kann und Elemente (15) zur Veränderung ihrer Pumpen- bzw. Motorschluckmenge besitzt, die an eine Regeleinrichtung (16) angeschlossen sind, dadurch gekennzeichnet, dass als gemeinsamer Antriebsmotor ein Hohlwellenmotor (1) vorgesehen ist, dessen Rotor-Hohlwelle (2) unmittelbar an die Antriebswelle (5) der Schnecke (19) gekuppelt ist.Plasticizing and injection unit of a plastic injection molding machine with one in an injection cylinder ( 20 ) arranged snail ( 19 ), with a common drive motor for the rotary and translatory movement of the screw ( 19 ), whereby for the translational movement of the screw ( 19 ) a pressure medium pump connected to the drive motor ( 12 ) and at least one synchronous cylinder moved by it ( 11 ) are provided, with hydraulic lines ( 13 . 14 ) are provided, which are the inputs and outputs of the synchronous cylinders ( 11 ) and the pressure medium pump ( 12 ) to each other so that a closed hydraulic circuit is formed, and the pressure medium pump ( 12 ) can also work as a pressure medium motor and elements ( 15 ) to change their pump or motor swallowing quantity, which is connected to a control device ( 16 ) are connected, characterized in that a hollow shaft motor ( 1 ) is provided, the hollow rotor shaft ( 2 ) directly to the drive shaft ( 5 ) the snail ( 19 ) is coupled. Plastifizier- und Einspritzeinheit nach Anspruch 1, dadurch gekennzeichnet, dass als Anriebsmotor ein Hochmomenten-Hohlwellen-Servomotor (1) vorgesehen ist.Plasticizing and injection unit according to claim 1, characterized in that a high-torque hollow shaft servo motor ( 1 ) is provided. Plastifizier- und Einspritzeinheit nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass zwischen dem Hohlwellenmotor (1) und der Antriebswelle (5) der Schnecke (19) eine Kupplungseinrichtung (4), beispielsweise eine Schaltkupplung oder ein Freilauf angeordnet ist.Plasticizing and injection unit according to claim 1 or 2, characterized in that between the hollow shaft motor ( 1 ) and the drive shaft ( 5 ) the snail ( 19 ) a coupling device ( 4 ), for example a clutch or a freewheel is arranged. Plastifizier- und Einspritzeinheit nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass eine Rücklaufsperre (6) vorgesehen ist.Plasticizing and injection unit according to one of claims 1 to 3, characterized in that a backstop ( 6 ) is provided. Plastifizier- und Einspritzeinheit nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass Hydraulikleitungen (13, 14) vorgesehen sind, die die Ein- und Ausgänge der Gleichgangzylinder (11) und der Druckmittelpumpe (12) in einem geschlossenen Hydraulikkreis unmittelbar miteinander verbinden.Plasticizing and injection unit according to one of claims 1 to 4, characterized in that hydraulic lines ( 13 . 14 ) are provided, which are the inputs and outputs of the synchronous cylinders ( 11 ) and the pressure medium pump ( 12 ) connect directly to one another in a closed hydraulic circuit.
DE2002143248 2002-09-17 2002-09-17 Plasticizing and injection unit of a plastic injection molding machine Expired - Fee Related DE10243248B4 (en)

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Application Number Priority Date Filing Date Title
DE2002143248 DE10243248B4 (en) 2002-09-17 2002-09-17 Plasticizing and injection unit of a plastic injection molding machine

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DE2002143248 DE10243248B4 (en) 2002-09-17 2002-09-17 Plasticizing and injection unit of a plastic injection molding machine

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DE10243248A1 true DE10243248A1 (en) 2004-04-01
DE10243248B4 DE10243248B4 (en) 2005-12-22

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006005638A1 (en) * 2004-07-09 2006-01-19 Demag Ergotech Gmbh Injection moulding machine
WO2006056547A1 (en) * 2004-11-22 2006-06-01 Siemens Aktiengesellschaft Linearly displaceable rotation drive for a plastic injection molding machine
WO2006125406A1 (en) * 2005-05-24 2006-11-30 Bosch Rexroth Ag Injection unit

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0785059A1 (en) * 1996-01-18 1997-07-23 MANNESMANN Aktiengesellschaft Plasticising and injection unit of a plastic injection moulding unit
DE10135516A1 (en) * 2000-08-08 2002-06-20 Mannesmann Rexroth Ag Drive for closure-, injection- or ejection units of pressure injection molding machine has electric motor selectively displacing nested concentric piston-cylinder arrangement
DE10061329A1 (en) * 2000-12-04 2002-07-18 Mannesmann Plastics Machinery Injection unit for an injection molding machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0785059A1 (en) * 1996-01-18 1997-07-23 MANNESMANN Aktiengesellschaft Plasticising and injection unit of a plastic injection moulding unit
DE10135516A1 (en) * 2000-08-08 2002-06-20 Mannesmann Rexroth Ag Drive for closure-, injection- or ejection units of pressure injection molding machine has electric motor selectively displacing nested concentric piston-cylinder arrangement
DE10061329A1 (en) * 2000-12-04 2002-07-18 Mannesmann Plastics Machinery Injection unit for an injection molding machine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006005638A1 (en) * 2004-07-09 2006-01-19 Demag Ergotech Gmbh Injection moulding machine
DE102004033690A1 (en) * 2004-07-09 2006-02-16 Demag Ergotech Gmbh Injection molding machine
WO2006056547A1 (en) * 2004-11-22 2006-06-01 Siemens Aktiengesellschaft Linearly displaceable rotation drive for a plastic injection molding machine
US7819655B2 (en) 2004-11-22 2010-10-26 Siemens Aktiengesellschaft Linearly displaceable rotary drive for a plastic injection-molding machine
DE102004056209B4 (en) * 2004-11-22 2011-06-01 Siemens Ag Linearly displaceable rotary drive for a plastic injection molding machine
WO2006125406A1 (en) * 2005-05-24 2006-11-30 Bosch Rexroth Ag Injection unit
US7811080B2 (en) 2005-05-24 2010-10-12 Bosch Rexroth Ag Injection unit

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Owner name: SUMITOMO (SHI) DEMAG PLASTICS MACHINERY GMBH, , DE

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