WO2002057062A1 - Dispositif d'ejection pour machine a mouler - Google Patents

Dispositif d'ejection pour machine a mouler Download PDF

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Publication number
WO2002057062A1
WO2002057062A1 PCT/EP2002/000349 EP0200349W WO02057062A1 WO 2002057062 A1 WO2002057062 A1 WO 2002057062A1 EP 0200349 W EP0200349 W EP 0200349W WO 02057062 A1 WO02057062 A1 WO 02057062A1
Authority
WO
WIPO (PCT)
Prior art keywords
ejector
spindle
spindle nut
drive
ejector plate
Prior art date
Application number
PCT/EP2002/000349
Other languages
German (de)
English (en)
Inventor
Michael Zelleröhr
Original Assignee
Krauss-Maffei Kunststofftechnik Gmbh
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 Kunststofftechnik Gmbh filed Critical Krauss-Maffei Kunststofftechnik Gmbh
Publication of WO2002057062A1 publication Critical patent/WO2002057062A1/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
    • B29C45/40—Removing or ejecting moulded articles
    • B29C45/4005—Ejector constructions; Ejector operating mechanisms
    • 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
    • B29C45/40—Removing or ejecting moulded articles
    • B29C45/4005—Ejector constructions; Ejector operating mechanisms
    • B29C2045/4036—Ejector constructions; Ejector operating mechanisms driven by a screw and nut mechanism

Definitions

  • the invention relates to an ejection device for a molding machine such as a molding machine or injection molding machine for plastics and metals.
  • the ejection device serves to convey the finished molded part out of the mold, that is to say usually from one mold half, by inserting an ejection tool such as an ejection pin into the mold from the outside.
  • the invention has for its object to provide an ejector device for a molding machine, which is characterized by a small footprint and by a low power consumption.
  • the invention is based on the knowledge that a high ejector force (corresponds to high engine torque) is generally only required at the beginning of an ejector stroke. A high ejector speed is not required on this first part of the ejector stroke. On the other hand, since during this first part of the ejector stroke the molded part of the mold cores and bevels is pushed down, only a small force is required for the following part of the ejector stroke, but a large distance has to be covered at a relatively high speed.
  • a power drive in addition to a displacement drive for displacing the ejector plate over a relatively large distance at high speed, a power drive is provided which can exert a greater force than the displacement drive on the ejector plate.
  • the power drive moves the ejector plate over a shorter distance than the sliding drive.
  • both drives each have a spindle nut which is in engagement with a single spindle but has different thread pitches or thread pitches. Accordingly, the spindle has two different thread sections with different pitches.
  • the spindle preferably extends between the ejector plate and a platen and is mounted on the platen in a rotationally fixed and axially displaceable manner.
  • One of the spindle nuts is rotatably mounted on the ejector plate and is not axially displaceable with respect to the ejector plate, the other spindle nut being rotatably and axially non-displaceably mounted on the mold mounting plate.
  • the drives can be designed as electrical, hydraulic or pneumatic drives, and different types of drives can be combined with one another.
  • An electric drive for example, is particularly advantageous Sliding drive together with a hydraulic or pneumatic drive as a power drive.
  • Fig. 1 shows the schematic structure of an ejector device according to the invention, which is attached to the back of a platen 10.
  • the mold mounting plate 10 is usually a movable mold mounting plate which carries a mold half on its opposite side to the ejector device (on the right in the figure).
  • a spindle 20 is supported on one side, which carries a spindle nut 60 at its other end.
  • the spindle nut is in a known manner in engagement with a threaded portion 54 of the spindle 20.
  • the spindle nut 60 is rotatably attached to an ejector plate 30.
  • the ejector plate 30 carries an ejector tool such as an ejector pin 40.
  • the ejector device has the same structure as conventional devices.
  • the spindle nut 60 is rotated so that the ejector plate 30 moves towards the mold mounting plate 10, so that the ejector pin 40 can penetrate into a recess in the mold mounting plate 10 and ejects the molded part from the mold.
  • a power drive with an additional spindle nut 50 is provided in addition to the spindle nut 60, which can move the platen 30 back and forth (horizontally in FIG. 1).
  • This second spindle nut sits on the end of the spindle 20 facing the platen 10 and stands with one ⁇ d 1 o.
  • the platen 10 can be a movable or a fixed platen.

Landscapes

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

Abstract

L'invention concerne un dispositif d'éjection pour machine à mouler, telles que machines à mouler par injection, machines à mouler par compression et analogues. Le dispositif d'éjection comprend un outil éjecteur (40) qui est fixé sur une plaque d'éjection (30). La plaque d'éjection (30) est déplacée par des moyens d'entraînement, à partir d'un écrou à broche (60) et d'une broche filetée (54), en direction d'un plateau porte-moule (10) en vue d'éjecter une pièce moulée d'un moule. En vue de disposer d'une force élevée au début du processus d'éjection, l'invention est caractérisée en ce qu'il est prévu un entraînement mécanique supplémentaire comportant un autre écrou à broche (50) et une partie filetée correspondante (52), et en ce que le pas de filetage de la partie filetée (52) est inférieur à celui de la partie filetée (54). Le second écrou à broche (50) peut être entraîné en rotation à l'encontre du plateau porte-moule, mais est retenu afin d'empêcher son déplacement axial. Lorsque le second écrou à broche tourne, il déplace la broche filetée et, de ce fait, la plaque d'éjection, en direction du plateau porte-moule, ceci avec une force relativement élevée.
PCT/EP2002/000349 2001-01-17 2002-01-15 Dispositif d'ejection pour machine a mouler WO2002057062A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10101837.1 2001-01-17
DE2001101837 DE10101837B4 (de) 2001-01-17 2001-01-17 Auswerfvorrichtung für eine Formmaschine

Publications (1)

Publication Number Publication Date
WO2002057062A1 true WO2002057062A1 (fr) 2002-07-25

Family

ID=7670778

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/000349 WO2002057062A1 (fr) 2001-01-17 2002-01-15 Dispositif d'ejection pour machine a mouler

Country Status (2)

Country Link
DE (1) DE10101837B4 (fr)
WO (1) WO2002057062A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009079748A1 (fr) * 2007-12-20 2009-07-02 Husky Injection Molding Systems Ltd. Ensemble éjecteur pour éjection de pièces moulées
CN101992529A (zh) * 2009-08-25 2011-03-30 恩格尔奥地利有限公司 具有附加推出力的推料装置
DE102010035389B4 (de) * 2009-08-25 2013-07-04 Engel Austria Gmbh Auswerfervorrichtung mit Motorkraftbegrenzer

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009017871B4 (de) * 2009-04-17 2014-08-28 Schuler Pressen Gmbh & Co. Kg Auswerfereinrichtung für eine Umformeinrichtung
DE102012000752B4 (de) * 2012-01-18 2014-12-24 Servotec GmbH Herbert Bauch Schnellverstellung von Druckwerkkomponenten mit Feinjustage und Spielfreistellung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3893644A (en) * 1973-08-06 1975-07-08 Herman J Drazick Ejector accelerator for molding apparatus
JPS6110423A (ja) * 1984-06-26 1986-01-17 Fanuc Ltd 射出成形機におけるエジェクタ−機構
JPS62197261A (ja) * 1986-02-25 1987-08-31 Toyo Kikai Kinzoku Kk ダイカストマシンの製品押出方法
DE4218822A1 (de) * 1992-06-09 1993-12-16 Kloeckner Ferromatik Desma Vorrichtung zum Auswerfen von Spritzgußteilen aus Spritzgußformen
JPH07214610A (ja) * 1994-02-08 1995-08-15 Meiki Co Ltd 射出成形機のエジェクター装置
EP0724944A1 (fr) * 1995-02-03 1996-08-07 Sumitomo Heavy Industries, Ltd. Dispositif d'éjection

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT287U1 (de) * 1994-10-03 1995-07-25 Engel Maschinenbau Ges M B H E Auswerfereinheit fuer eine spritzgiessmaschine
DE19524314C1 (de) * 1995-07-04 1996-07-11 Battenfeld Gmbh Schließ- oder Einspritzvorrichtung für eine Spritzgießmaschine
DE19536565C2 (de) * 1995-10-02 1998-07-16 Karl Hehl Spritzgießmaschine zur Verarbeitung plastifizierbarer Massen
DE10015548B4 (de) * 2000-03-30 2009-04-02 Bosch Rexroth Aktiengesellschaft Antrieb für eine Spritzgießmaschine, insbesondere für die Schließeinheit einer Spritzgießmaschine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3893644A (en) * 1973-08-06 1975-07-08 Herman J Drazick Ejector accelerator for molding apparatus
JPS6110423A (ja) * 1984-06-26 1986-01-17 Fanuc Ltd 射出成形機におけるエジェクタ−機構
JPS62197261A (ja) * 1986-02-25 1987-08-31 Toyo Kikai Kinzoku Kk ダイカストマシンの製品押出方法
DE4218822A1 (de) * 1992-06-09 1993-12-16 Kloeckner Ferromatik Desma Vorrichtung zum Auswerfen von Spritzgußteilen aus Spritzgußformen
JPH07214610A (ja) * 1994-02-08 1995-08-15 Meiki Co Ltd 射出成形機のエジェクター装置
EP0724944A1 (fr) * 1995-02-03 1996-08-07 Sumitomo Heavy Industries, Ltd. Dispositif d'éjection

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 010, no. 155 (M - 485) 4 June 1986 (1986-06-04) *
PATENT ABSTRACTS OF JAPAN vol. 012, no. 045 (M - 667) 10 February 1988 (1988-02-10) *
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 11 26 December 1995 (1995-12-26) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009079748A1 (fr) * 2007-12-20 2009-07-02 Husky Injection Molding Systems Ltd. Ensemble éjecteur pour éjection de pièces moulées
CN101992529A (zh) * 2009-08-25 2011-03-30 恩格尔奥地利有限公司 具有附加推出力的推料装置
US8444409B2 (en) 2009-08-25 2013-05-21 Engel Austria Gmbh Ejector apparatus with additional ejector force
DE102010034451B4 (de) * 2009-08-25 2013-07-04 Engel Austria Gmbh Auswerfervorrichtung mit Zusatz-Auswerferkraft
DE102010035389B4 (de) * 2009-08-25 2013-07-04 Engel Austria Gmbh Auswerfervorrichtung mit Motorkraftbegrenzer

Also Published As

Publication number Publication date
DE10101837B4 (de) 2008-02-07
DE10101837A1 (de) 2002-08-01

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