WO2003080316A1 - Actionneur rotatif et lineaire commande par un moteur electrique - Google Patents

Actionneur rotatif et lineaire commande par un moteur electrique Download PDF

Info

Publication number
WO2003080316A1
WO2003080316A1 PCT/EP2003/002558 EP0302558W WO03080316A1 WO 2003080316 A1 WO2003080316 A1 WO 2003080316A1 EP 0302558 W EP0302558 W EP 0302558W WO 03080316 A1 WO03080316 A1 WO 03080316A1
Authority
WO
WIPO (PCT)
Prior art keywords
linear
rotor
drive
rotary
stator
Prior art date
Application number
PCT/EP2003/002558
Other languages
German (de)
English (en)
Inventor
Georg Michael Ickinger
Harish Kittappa Gowda
Saju Mangalasseril
Sivakumar Shanmugham
Kumar Mathrubootmam
Vivek Anand Sukumaran
Original Assignee
Demag Ergotech Gmbh
L & T-Demag Plastics Machinery Private Limited
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 Demag Ergotech Gmbh, L & T-Demag Plastics Machinery Private Limited filed Critical Demag Ergotech Gmbh
Priority to AU2003209730A priority Critical patent/AU2003209730A1/en
Publication of WO2003080316A1 publication Critical patent/WO2003080316A1/fr

Links

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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K16/00—Machines with more than one rotor or stator
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
    • 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
    • B29C2045/5028—Drive means therefor screws axially driven 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
    • B29C2045/504—Drive means therefor electric motors for rotary and axial movement of the screw being coaxial with the screw
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
    • H02K2201/18—Machines moving with multiple degrees of freedom
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/167—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
    • H02K5/1672—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings radially supporting the rotary shaft at both ends of the rotor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor

Definitions

  • the invention relates to an electric motor-operated linear and rotary actuator, also called an electric motor actuator, according to the preamble of claim 1.
  • Preferred areas of application of the invention are linear and rotary actuators in injection molding machines, as are provided in particular for the plasticizing screw of an injection unit of an injection molding machine.
  • the object of the invention is to design the injection unit of the type mentioned at the outset in such a way that, without the need for structurally complex bearings, the mass which is moved along with the plasticizing screw when it is lifted is kept low.
  • the rotor of the rotary drive is moved in the axial direction together with the plasticizing screw as an element to be set, while the stator and, above all, the housing of the rotary drive are not displaced as well.
  • the gear element of the linear drive which is driven in a stroke-movable manner, can be connected to the rotor of the rotary drive in a manner that is fixed in terms of stroke and rotation, and thus there is also no need for an axial bearing located between them.
  • This enables sensitive control of the screw lifting and rotating movements by the Electric motors of the linear and rotary drives can be reversed and the speed controlled independently of one another.
  • the extended magnetic pole arrangement is provided on the stator side.
  • FIG. 1 shows an embodiment of an injection unit according to the invention in the screw return stroke position.
  • Fig. 2 shows the injection unit according to Fig. 1 in the screw feed position.
  • the electromotive actuator is the plasticizing screw.
  • the electromotive actuator according to the invention can also be used in other areas of technology where a combined linear and rotary movement is desired.
  • the figures show the rear sections of the plasticizing cylinder 1 and the plasticizing screw 2 stored therein of an injection molding machine that is otherwise not shown in detail.
  • the plasticizing screw 2 is driven by a linear drive 3 and a rotary drive 4, which are accommodated in a common housing 5 and are each designed as an electric hollow shaft motor.
  • the rotor 6 of the linear drive 3 which is rotatably mounted on the roller bearing 7 in the usual way, but is axially immovable on the housing 5 and is supported by stator or rotor-side magnetic pole arrangements 8 and 9, which are separated from one another by a narrow air gap, has an axial extension 10, which is designed as a spindle nut, which, together with the spindle shaft piece 11, has a central drive shaft 12 which is fixedly connected to the plasticizing screw 2 Ball screw gear forms.
  • the drive shaft 12 is rotatably and axially displaceably mounted on the housing 5 or on the rotor 9 of the linear drive 3 on both sides via slide bearings 13, 14, or also combined slide / ball bearings.
  • the hollow shaft rotor 15 of the rotary drive 4 which surrounds the spindle shaft piece 11, leaving an annular space receiving the spindle nut 10, is connected to the drive shaft 12 in a rotationally and axially fixed manner.
  • the stator-side magnetic pole arrangement 16 of the rotary drive 4 is longer than the rotor-side - 17 - in such a way that the rotor 15 remains magnetically equally well coupled to the stator regardless of its stroke position.
  • the plasticizing screw 2 performs two movements during operation. When injecting, the screw 2 is pushed axially forward and does not rotate. When plasticizing, the screw 2 rotates and is pushed axially backwards by the plasticized material conveyed into the screw antechamber. A defined counterforce (dynamic pressure) is applied.
  • the spindle nut 10 is rotated in the injection phase by the linear drive 3 relative to the rotary drive 4, so that the spindle shaft piece 11 together with the drive shaft 12 and thus also the plasticizing screw 2 and the rotor 15 of the Rotary drive 4 is advanced axially (Fig. 2).
  • the rotary drive 4 rotates the plasticizing screw 2 via the rotor 15 and the drive shaft 12, and the linear drive 3 rotates with a their speed.
  • the lifting or rotating speed, but also a combined lifting and rotating speed of the plasticizing screw 2 can be variably adjusted within wide limits. This results in a maximum lifting speed if both drives 3, 4 rotate in opposite directions to one another.

Landscapes

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

Abstract

L'invention concerne un actionneur rotatif et linéaire commandé par un moteur électrique, équipant notamment les vis de plastification de presses de moulage par injection. L'invention vise, tout en renonçant à des paliers coulissants de conception complexe et nuisant au couple, à réduire notablement les forces d'inertie agissant lors de la course d'injection d'une vis de plastification sur un organe d'injection d'une presse de moulage par injection, laquelle est équipée d'un actionneur linéaire (3) entraînant la vis de plastification (2) dans sa course et d'un actionneur rotatif (4). Cet actionneur rotatif, coaxial avec l'actionneur linéaire et commandé par un moteur électrique, entraîne par rotation la vis de plastification et il comprend un rotor (15) relié à la vis de plastification, avec laquelle il est solidaire en rotation et en course, et couplé par transmission de couple au stator de l'actionneur rotatif par des ensembles de pôles magnétiques (16, 17). A cet effet, le rotor de l'actionneur rotatif, par rapport au stator, est logé coulissant dans l'axe et indépendamment de la rotation, et un des ensembles de pôles magnétiques de l'actionneur rotatif, côté stator ou côté rotor, est prolongé relativement à l'autre ensemble de pôles magnétiques, en fonction de la course de l'actionneur linéaire, les carters (5) des actionneurs rotatifs et linéaires étant reliés de manière fixe.
PCT/EP2003/002558 2002-03-27 2003-03-12 Actionneur rotatif et lineaire commande par un moteur electrique WO2003080316A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003209730A AU2003209730A1 (en) 2002-03-27 2003-03-12 Linear and rotary actuator driven by an electromotor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10213679.3 2002-03-27
DE10213679A DE10213679A1 (de) 2002-03-27 2002-03-27 Einspritzaggregat für eine Spritzgießmaschine

Publications (1)

Publication Number Publication Date
WO2003080316A1 true WO2003080316A1 (fr) 2003-10-02

Family

ID=27815983

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2003/002558 WO2003080316A1 (fr) 2002-03-27 2003-03-12 Actionneur rotatif et lineaire commande par un moteur electrique

Country Status (3)

Country Link
AU (1) AU2003209730A1 (fr)
DE (1) DE10213679A1 (fr)
WO (1) WO2003080316A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006063985A1 (fr) * 2004-12-15 2006-06-22 Siemens Aktiengesellschaft Moteur électrique pour mouvement rotatif et axial
WO2007134961A1 (fr) * 2006-05-19 2007-11-29 Demag Ergotech Gmbh Unité d'entraînement électrique pour une vis sans fin de plastification d'une machine de coulée par injection
EP3136555A1 (fr) * 2015-08-27 2017-03-01 Ehrt Maschinenbau GmbH Unite d'entrainement
TWI649178B (zh) * 2014-06-25 2019-02-01 日商住友重機械工業股份有限公司 Injection molding machine
US10751847B2 (en) 2015-08-27 2020-08-25 Ehrt Maschinenbau Gmbh Drive unit

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10304578B3 (de) 2003-02-05 2004-03-18 Demag Ergotech Gmbh Einspritzaggregat für eine Spritzgießmaschine
JP4279838B2 (ja) * 2003-07-08 2009-06-17 住友重機械工業株式会社 射出成形機の駆動装置及び成形方法
DE102004028355B4 (de) * 2004-06-11 2011-12-29 Siemens Ag Antriebseinrichtung
DE102004045493C5 (de) * 2004-09-20 2008-09-04 Siemens Ag Elektrische Maschine
DE102004056212A1 (de) * 2004-11-22 2006-06-01 Siemens Ag Elektrische Maschine mit einem rotatorischen und einem linearen Aktuator
EP2045064A1 (fr) * 2007-10-01 2009-04-08 Siemens Aktiengesellschaft Machine de moulage par injection

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60132721A (ja) * 1983-12-21 1985-07-15 Fanuc Ltd 射出成形機におけるスクリユ−射出機構
DE4344335A1 (de) * 1993-12-23 1995-06-29 Krauss Maffei Ag Einspritzaggregat für eine Spritzgießmaschine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6161818A (ja) * 1984-09-04 1986-03-29 Fanuc Ltd 射出成形機のスクリユ回転制御方式
US5421712A (en) * 1993-10-05 1995-06-06 Industrial Technology Research Institute Screw rotating and advancing device for an injection molding machine
DE4405137C2 (de) * 1994-02-18 1996-07-04 Johann Holzschuh Spritzeinheit für eine Spritzgießmaschine
DE19532267C2 (de) * 1995-09-01 1998-03-19 Ferromatik Milacron Maschinenb Elektrischer Antrieb mit hydraulischer Unterstützung in einer Spritzgießmaschine
JP3506631B2 (ja) * 1999-02-19 2004-03-15 東芝機械株式会社 電動射出成形機のボールねじ寿命予測方法および装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60132721A (ja) * 1983-12-21 1985-07-15 Fanuc Ltd 射出成形機におけるスクリユ−射出機構
DE4344335A1 (de) * 1993-12-23 1995-06-29 Krauss Maffei Ag Einspritzaggregat für eine Spritzgießmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 009, no. 294 (M - 431) 20 November 1985 (1985-11-20) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006063985A1 (fr) * 2004-12-15 2006-06-22 Siemens Aktiengesellschaft Moteur électrique pour mouvement rotatif et axial
WO2007134961A1 (fr) * 2006-05-19 2007-11-29 Demag Ergotech Gmbh Unité d'entraînement électrique pour une vis sans fin de plastification d'une machine de coulée par injection
TWI649178B (zh) * 2014-06-25 2019-02-01 日商住友重機械工業股份有限公司 Injection molding machine
EP3136555A1 (fr) * 2015-08-27 2017-03-01 Ehrt Maschinenbau GmbH Unite d'entrainement
US10751847B2 (en) 2015-08-27 2020-08-25 Ehrt Maschinenbau Gmbh Drive unit

Also Published As

Publication number Publication date
DE10213679A1 (de) 2003-10-09
AU2003209730A1 (en) 2003-10-08

Similar Documents

Publication Publication Date Title
EP1511613B1 (fr) Entrainement lineaire et rotatif fonctionnant grace a un moteur electrique
WO2011141236A2 (fr) Dispositif d'entraînement pour mouvements rotatif et linéaire à inerties découplées
WO2003080316A1 (fr) Actionneur rotatif et lineaire commande par un moteur electrique
WO2005122366A1 (fr) Dispositif d'entrainement
WO2015082199A1 (fr) Actionneur linéaire
EP3464947B1 (fr) Dispositif de réglage et utilisation dudit dispositif de réglage
WO2005118177A1 (fr) Machine a decouper dotee d'un entrainement en rotation et en levage electrique
EP1728574B1 (fr) Dispositif de serrage pour machine outil
DE3711819C1 (de) Drehantriebsvorrichtung
DE10342385B3 (de) Einspritzaggregat für eine Spritzgießmaschine
WO1999055533A2 (fr) Rouleau pour presse rotative
WO2002045939A1 (fr) Unite d'injection pour une presse d'injection
EP1453638B1 (fr) Dispositif pour fixer un outil sur un arbre et broche de machine comportant un tel dispositif
DE102006007438B3 (de) Antrieb für eine Maschine zum Kunststoff-Plastifizieren und -Einspritzen
DE19948265C2 (de) Linearstellglied
EP1089019B1 (fr) Actuateur linéaire
WO2005110708A1 (fr) Ensemble d'entrainement pour une unite d'injection d'une machine de moulage par injection
EP2014442B1 (fr) Dispositif électrique de moulage par injection pour presses de moulage par injection en matière synthétique
EP1292441A1 (fr) Unite d'injection destinee a un dispositif de moulage par injection de plastique
EP1722461A1 (fr) Entrainement éléctrique
EP1361946B1 (fr) Dispositif de fermeture dans une presse a injection de matiere synthetique
EP1506079A1 (fr) Entrainement lineaire pour presse d'injection
DE19605747A1 (de) Antriebseinheit für Plastifizier- und Einspritzeinheiten von Kunststoff-Spritzgießmaschinen
EP1210219A1 (fr) Unite d'injection electrique de precision
DE19646142A1 (de) Honmaschine

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SD SE SG SK SL TJ TM TN TR TT TZ UA UG US UZ VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
WA Withdrawal of international application
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase