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WO2018134091A1 - Procédé et dispositif pour faire fonctionner une machine de moulage par injection - Google Patents

Procédé et dispositif pour faire fonctionner une machine de moulage par injection Download PDF

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Publication number
WO2018134091A1
WO2018134091A1 PCT/EP2018/050502 EP2018050502W WO2018134091A1 WO 2018134091 A1 WO2018134091 A1 WO 2018134091A1 EP 2018050502 W EP2018050502 W EP 2018050502W WO 2018134091 A1 WO2018134091 A1 WO 2018134091A1
Authority
WO
WIPO (PCT)
Prior art keywords
key figures
injection molding
apc
molding machine
tool
Prior art date
Application number
PCT/EP2018/050502
Other languages
German (de)
English (en)
Inventor
Marco Gruber
Norbert Heyer
Andreas HANDSCHKE
Original Assignee
Kraussmaffei Technologies 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 Kraussmaffei Technologies Gmbh filed Critical Kraussmaffei Technologies Gmbh
Publication of WO2018134091A1 publication Critical patent/WO2018134091A1/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
    • B29C45/1753—Cleaning or purging, e.g. of the injection unit
    • 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
    • B29C45/76—Measuring, controlling or regulating
    • 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
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76822—Phase or stage of control
    • B29C2945/76906—Purging
    • 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
    • B29C45/1753—Cleaning or purging, e.g. of the injection unit
    • B29C45/1755—Means for receiving or discharging purged material; Purge shields

Definitions

  • the present invention relates to a method and apparatus for operating an injection molding machine.
  • a method for controlling a startup process provides for the use of key figures from a steady state state of a respective production process. On this basis, an assessment, optimization and control of a respective startup process is performed.
  • the key figures are obtained using key figures from an "APC” module and / or using a database.
  • API API
  • similar production processes can be used to further expand the database.
  • melt state information which are used on the basis of "APC” key figures for the control and regulation of a spraying program.
  • a respective selection of materials, a total time of a production interruption and further codes or indices for controlling a start-up process are preferably used for a regulation of a starting process.
  • an "APC” rule in the current production process is based on a nem generated by the respective tool during the filling process back pressure.
  • the injection molding machine is separated from the tool for spraying a respective residual material out of the plasticizing unit.
  • known "APC" data are used in this sense in order to utilize a control of the ejection process based on a correlation of the existing "APC” data for the relevant tool on an application without a tool back pressure.
  • A1 A tool is approached for the first time, there is no data record.
  • APC data can not be used, but APC data can be used for similar use cases. This is used for characteristic values from a database for a comparable application or material in order to achieve an improvement when starting up.
  • the new tool or its identifier or identification number, etc. the trigger for detecting this Anfahrsituation.
  • a tool is re-equipped and started or restarted after a break due to an interruption.
  • the interruption time is the essential feature for this starting situation.
  • a tool is in production and it has to be restarted after a short disruption or machine stop:
  • the APC control system optimizes the continuation of production with the key figures currently determined and available in the control system, so in principle there is no more learning phase necessary, this is essentially followed by a "standard" APC process in the injection molding machine.
  • this Anfahrsituation is characterized in that the tool has not been changed and also an interruption of production within certain limits.
  • a device for controlling a starting process of an injection molding machine which is designed to implement a method according to one of the preceding claims characterized in that the device means for using key figures from a steady state of each production process or due to process parameters comparable Has production processes, based on which a respective number of Abspritz cycles can be determined and set.
  • the device comprises an APC module and a database with historical values and comparison values and is designed using parameters for selecting a controller from predefined cases of startup processes.
  • the plasticizing unit with an integrated start-up valve downstream of the screw tip for targeted discharge of the starting material, e.g. provided directly in a collecting container and / or with a closing nozzle with a corresponding additional opening to the outside and an additional closure position. Both solutions can facilitate the discharge of no longer usable Plastilat.
  • an injection molding machine 1 and a section of a tool 2 are shown symbolically. provides.
  • the injection molding machine 1 and the tool 2 are separated in an implied manner.
  • a situation indicative of a starting process is indicated by the fact that the injection molding machine 1 so far moved away from the tool 2 by a distance d, that in a plasticizing 3 of the injection molding machine 1 unacceptably long remaining and overheated melt than so-called Purification of a screw 4 of the plasticizing 3 must be targeted discharged.
  • This starting material not shown in the drawing, thus certainly does not get into the tool 2 in order to avoid possible damage or expensive cleaning of the tool 2, in particular otherwise.
  • Important parameters here are an ejected material flow m and melt state information.
  • a dashed line around a part of the injection molding machine 1 indicates a range of parameters and measured variables, as used in accordance with the teaching of DE 10 2013 1 1 1 257 B3 in the context of an APC control device, in order to avoid parameter fluctuations in an ongoing production Produce good parts.
  • Exemplary here are a speed n and a speed v of the screw 4, a mass M supplied fresh granules with a temperature d s of fresh granules when fed into the plasticizing unit 3 and a material flow m and a temperature d p of the plastilate at the output of the plasticizing. 3 specified as used parameters in non-exhaustive enumeration.
  • Restarting after production stop By measuring the production interruption time At, the device recognizes a continuation of one and ongoing production and takes a database DB appropriate measures to protect the tool in question from damage caused by now unusable, in the plasticizing unit 3 adjacent melt. In accordance with a possible degeneration of the melted material, the control now causes the melted product to be discharged while tracking freshly melted granules until the plasticizing unit 3 has been sufficiently cleaned. This process, which is dependent on a respective plasticizing unit 3 and a material used in terms of time and material volume, is likewise determined on the basis of values from the database.
  • Tool exchange Based on a modified tool identifier W, the device detects a tool exchange. A new tool identifier W is transmitted to the database DB, there either APC values of a previous manufacturing process or APC values of a similar tool. Taking into account a production interruption time ⁇ t, a startup process is now controlled and monitored on the basis of these values.
  • the plasticizing unit 3 is provided with an integrated start-up valve downstream of the screw tip for targeted discharge of the Anfahrmaterials eg directly into a collecting container, analogous to a starting valve at IMC.
  • An essential aim of this development is that the starting material can be disposed of directly without causing further break times for removing the material, for example, from the nozzle protection space.
  • This goal can alternatively be achieved by a closure nozzle with a corresponding additional opening to the outside and an additional closure position. Both constructive measures described above facilitate a discharge of no longer usable plastilate from the plasticizing unit 3 and thus speed up and simplify a start-up process.

Landscapes

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

Abstract

L'invention vise à régler des processus de démarrage reposant sur des déroulements déterminés de manière empirique, tout en réduisant la quantité de matériau de rebut supplémentaire mentionné plus haut et les coûts qui y sont liés en termes de matériau, d'énergie et de temps système. A cet effet, selon l'invention, des paramètres résultant d'un état permanent d'un processus de production respectif sont utilisés de manière à déterminer et à ajuster un nombre respectif de cycles d'aspersion.
PCT/EP2018/050502 2017-01-20 2018-01-10 Procédé et dispositif pour faire fonctionner une machine de moulage par injection WO2018134091A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017101132.3A DE102017101132A1 (de) 2017-01-20 2017-01-20 Verfahren und Vorrichtung zum Betreiben einer Spritzgießmaschine
DE102017101132.3 2017-01-20

Publications (1)

Publication Number Publication Date
WO2018134091A1 true WO2018134091A1 (fr) 2018-07-26

Family

ID=60943031

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/050502 WO2018134091A1 (fr) 2017-01-20 2018-01-10 Procédé et dispositif pour faire fonctionner une machine de moulage par injection

Country Status (2)

Country Link
DE (1) DE102017101132A1 (fr)
WO (1) WO2018134091A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0724877A (ja) * 1993-07-07 1995-01-27 Japan Steel Works Ltd:The 射出成形機のパージ排出機能付ノズル
US6514440B1 (en) * 1998-04-21 2003-02-04 Synventive Molding Solutions, Inc. Apparatus and method for purging injection molding system
WO2006039785A1 (fr) * 2004-10-15 2006-04-20 Husky Injection Molding Systems Ltd. Vanne de fermeture trois voies en moulage par injection et procede
JP2010099995A (ja) * 2008-10-27 2010-05-06 Japan Steel Works Ltd:The 成形サイクル停止時の樹脂劣化防止手段を備えた射出成形機
CN102672928B (zh) * 2012-05-07 2014-06-04 华中科技大学 全电动注塑机智能自动清洗控制方法及系统
DE102013111257B3 (de) 2013-10-11 2014-08-14 Kraussmaffei Technologies Gmbh Verfahren zur Prozessführung eines Formfüllvorgangs einer Spritzgießmaschine
US20150328812A1 (en) * 2014-05-19 2015-11-19 Nissei Plastic Industrial Co., Ltd. Method of purging for an injection molding machine
US20160203232A1 (en) * 2012-03-01 2016-07-14 Proper Digital LLC Tooling system
DE102016003686A1 (de) * 2015-04-01 2016-10-06 Fanuc Corporation Steuerungsvorrichtung einer Spritzgießmaschine mit Gießharz-Entleerungsfunktion

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0724877A (ja) * 1993-07-07 1995-01-27 Japan Steel Works Ltd:The 射出成形機のパージ排出機能付ノズル
US6514440B1 (en) * 1998-04-21 2003-02-04 Synventive Molding Solutions, Inc. Apparatus and method for purging injection molding system
WO2006039785A1 (fr) * 2004-10-15 2006-04-20 Husky Injection Molding Systems Ltd. Vanne de fermeture trois voies en moulage par injection et procede
JP2010099995A (ja) * 2008-10-27 2010-05-06 Japan Steel Works Ltd:The 成形サイクル停止時の樹脂劣化防止手段を備えた射出成形機
US20160203232A1 (en) * 2012-03-01 2016-07-14 Proper Digital LLC Tooling system
CN102672928B (zh) * 2012-05-07 2014-06-04 华中科技大学 全电动注塑机智能自动清洗控制方法及系统
DE102013111257B3 (de) 2013-10-11 2014-08-14 Kraussmaffei Technologies Gmbh Verfahren zur Prozessführung eines Formfüllvorgangs einer Spritzgießmaschine
US20150328812A1 (en) * 2014-05-19 2015-11-19 Nissei Plastic Industrial Co., Ltd. Method of purging for an injection molding machine
DE102016003686A1 (de) * 2015-04-01 2016-10-06 Fanuc Corporation Steuerungsvorrichtung einer Spritzgießmaschine mit Gießharz-Entleerungsfunktion

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Publication number Publication date
DE102017101132A1 (de) 2018-07-26

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