WO2014153676A1 - Dispositif d'introduction de plastique liquide dans un outil à étages - Google Patents

Dispositif d'introduction de plastique liquide dans un outil à étages Download PDF

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Publication number
WO2014153676A1
WO2014153676A1 PCT/CH2014/000036 CH2014000036W WO2014153676A1 WO 2014153676 A1 WO2014153676 A1 WO 2014153676A1 CH 2014000036 W CH2014000036 W CH 2014000036W WO 2014153676 A1 WO2014153676 A1 WO 2014153676A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid plastic
mould
tool
outer tube
molding
Prior art date
Application number
PCT/CH2014/000036
Other languages
German (de)
English (en)
Other versions
WO2014153676A8 (fr
Inventor
Willi Manz
Oliver TIEFENBÖCK
Original Assignee
Schöttli 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 Schöttli AG filed Critical Schöttli AG
Publication of WO2014153676A1 publication Critical patent/WO2014153676A1/fr
Publication of WO2014153676A8 publication Critical patent/WO2014153676A8/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
    • B29C45/26—Moulds
    • B29C45/32—Moulds having several axially spaced mould cavities, i.e. for making several separated articles
    • B29C45/322—Runner systems for distributing the moulding material to the stacked mould cavities

Definitions

  • the invention relates to a device for feeding the liquid plastic into a stack train according to the preamble of patent claim 1.
  • a stack mold comprises three mold parts, which are designed to be movable relative to one another in series.
  • a molded part is fixedly arranged as in a two-part tool; the other two are at different speeds when closing the tool to the stationary one
  • the middle mold part is preferably moved at half speed as the outer mold part.
  • Molded part and is from there via distribution lines in the incorporated on both sides of the middle molding
  • the plastic must be introduced into the central molding, which is open and
  • Transfer system for stack molds in which by a feeder 1, for example an extruder, liquid plastic a stack mold 3 is fed.
  • the three-part stack mold comprises three mold parts 5, 7 and 9, which are axially displaceable relative to each other, for example, four columns penetrating the mold parts (columns not shown).
  • Molded part 9 which to the feeder 1
  • valves 13 In order to direct the liquid plastic to the central mold part 7, from where it is injected into the cavities 11, two valves 13 are necessary in order to prevent on the one hand a backflow from the cavities and a dripping from the supply line during the separation of the moldings 5-9. On the one hand, the valves 13 must be controlled and on the other hand, only with considerable effort, a tight connection of the
  • connection point 17 is between the feeder 1 and the stationary one
  • Molded part 9 available, where up to 2500 bar pressure at
  • An object of the present invention is therefore to provide a device which provides a continuous supply of liquid plastic and dense at all times
  • the plastic Due to the telescopic design of the feed line in the inner tube, which is telescopically displaceable with a running fit in an outer tube at the middle mold part, the plastic can be introduced without interruption in the middle mold part and also can at the end of the
  • Figure la is a schematic representation of a
  • Figure lb is a schematic representation of a
  • Figure 3 is a schematic longitudinal section through the
  • Feeding device 1 from an extruder with the middle shaped part 7 takes place through a snorkel 19, comprising at least two telescopically pushed inside and outer tubes 21 and 23, which is a heated
  • Form supply line 17 for liquid plastic is fixedly connected to the end of the feeding device 1 and inserted without play to form a running fit in the outer tube 23, which arranged with the central mold part 7 and 7 in the molding
  • Distribution channels 29 is connected.
  • the outer tube 23 passes through the fixed mold part 9 with play. All line connections remain independent of the respective geometric position of the three mold parts 5,7,9 always maintained and it will be on the mold parts 5,7,9 no valves, elche the feed line 17 between the feeder 1 and the middle mold part 7 would separate needed when the moldings 5,7,9 are pulled apart.

Landscapes

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

Abstract

Dispositif d'introduction de plastique liquide dans un outil à étages (3) comportant un tube (19) qui traverse le moule fixe (9) et qui est relié de manière télescopique au moule central (7) qui est pourvu de canaux de répartition (29). Il n'est pas nécessaire d'avoir recours à des vannes (13) qui doivent fermer les conduits d'amenée lors de l'ouverture de l'outil à étages (3). En outre, lors de l'ouverture de l'outil à étages (3), après la fin de la phase de maintien en pression, un vide peut se créer, qui empêche l'écoulement de plastique liquide hors des canaux de répartition (29).
PCT/CH2014/000036 2013-03-26 2014-03-21 Dispositif d'introduction de plastique liquide dans un outil à étages WO2014153676A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00668/13A CH707792A1 (de) 2013-03-26 2013-03-26 Vorrichtung zum Zuführen des flüssigen Kunststoffs in ein Etagenwerkzeug.
CH668/13 2013-03-26

Publications (2)

Publication Number Publication Date
WO2014153676A1 true WO2014153676A1 (fr) 2014-10-02
WO2014153676A8 WO2014153676A8 (fr) 2014-10-30

Family

ID=50433891

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH2014/000036 WO2014153676A1 (fr) 2013-03-26 2014-03-21 Dispositif d'introduction de plastique liquide dans un outil à étages

Country Status (2)

Country Link
CH (1) CH707792A1 (fr)
WO (1) WO2014153676A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202016104165U1 (de) 2015-07-30 2016-11-14 Netstal-Maschinen Ag Spritzgießmaschine mit Etagenwerkzeug für Spritzprägeanwendungen
WO2022056618A1 (fr) * 2020-09-17 2022-03-24 Husky Injection Molding Systems Ltd. Unité d'injection à accouplement télescopique de matière fondue

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988000119A1 (fr) * 1986-06-24 1988-01-14 Meiseikinzokukogyosho Co., Ltd Mecanisme protecteur contre les fuites de resine au niveau d'un ajutage etendu dans un dispositif de moulage a injection double
US20060182842A1 (en) * 2005-02-16 2006-08-17 Trevor Pruden Nozzle and apparatus for injection molding
DE202008000727U1 (de) 2008-01-17 2008-04-24 Synventive Molding Solutions B.V. Übergabesystem für Etagenformen

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4219924A1 (de) * 1992-06-17 1993-12-23 Richard Herbst Spritzgießmaschine mit Etagenwerkzeug
JPH06848A (ja) * 1992-06-18 1994-01-11 Mitsubishi Materials Corp スタックモールド金型
US5968562A (en) * 1997-09-24 1999-10-19 Husky Injection Molding Systems, Ltd. Sprue bar assembly for use in a stack mold
US7462032B2 (en) * 2006-06-15 2008-12-09 Husky Injection Molding Systems Ltd. Split sprue bar having a device for preventing leakage

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988000119A1 (fr) * 1986-06-24 1988-01-14 Meiseikinzokukogyosho Co., Ltd Mecanisme protecteur contre les fuites de resine au niveau d'un ajutage etendu dans un dispositif de moulage a injection double
US20060182842A1 (en) * 2005-02-16 2006-08-17 Trevor Pruden Nozzle and apparatus for injection molding
DE202008000727U1 (de) 2008-01-17 2008-04-24 Synventive Molding Solutions B.V. Übergabesystem für Etagenformen

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 198803, Derwent World Patents Index; AN 1988-021492 *
HERNANDEZ R D: "TELESCOPING SPRUE BAR", TECHNICAL DIGEST - WESTERN ELECTRIC, WESTERN ELECTRIC. NEW YORK, US, no. 72, 1 October 1983 (1983-10-01), pages 21/22, XP001176391 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202016104165U1 (de) 2015-07-30 2016-11-14 Netstal-Maschinen Ag Spritzgießmaschine mit Etagenwerkzeug für Spritzprägeanwendungen
DE102015112508A1 (de) 2015-07-30 2017-02-02 Netstal-Maschinen Ag Spritzgießmaschine mit Etagenwerkzeug für Spritzprägeanwendungen
WO2022056618A1 (fr) * 2020-09-17 2022-03-24 Husky Injection Molding Systems Ltd. Unité d'injection à accouplement télescopique de matière fondue

Also Published As

Publication number Publication date
WO2014153676A8 (fr) 2014-10-30
CH707792A1 (de) 2014-09-30

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