EP1912774A1 - Procede pour surveiller et/ou regler le remplissage d'au moins une cavite avec une matiere en fusion - Google Patents

Procede pour surveiller et/ou regler le remplissage d'au moins une cavite avec une matiere en fusion

Info

Publication number
EP1912774A1
EP1912774A1 EP06776148A EP06776148A EP1912774A1 EP 1912774 A1 EP1912774 A1 EP 1912774A1 EP 06776148 A EP06776148 A EP 06776148A EP 06776148 A EP06776148 A EP 06776148A EP 1912774 A1 EP1912774 A1 EP 1912774A1
Authority
EP
European Patent Office
Prior art keywords
melt
cavity
viscosity
sensor
temperature
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.)
Withdrawn
Application number
EP06776148A
Other languages
German (de)
English (en)
Inventor
Christopherus Bader
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Priamus System Technologies AG
Original Assignee
Priamus System Technologies 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 Priamus System Technologies AG filed Critical Priamus System Technologies AG
Publication of EP1912774A1 publication Critical patent/EP1912774A1/fr
Withdrawn legal-status Critical Current

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
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
    • 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
    • B29C45/1782—Mounting or clamping means for heating elements or thermocouples
    • 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
    • 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
    • B29C45/7646—Measuring, controlling or regulating viscosity
    • 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
    • B29C45/78—Measuring, controlling or regulating of temperature
    • 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
    • B29C2945/76003—Measured parameter
    • B29C2945/76006—Pressure
    • 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
    • B29C2945/76003—Measured parameter
    • B29C2945/7604—Temperature
    • 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
    • B29C2945/76003—Measured parameter
    • B29C2945/76066—Time
    • 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
    • B29C2945/76003—Measured parameter
    • B29C2945/76083—Position
    • 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
    • B29C2945/76177—Location of measurement
    • B29C2945/76254—Mould
    • B29C2945/76257—Mould cavity
    • 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
    • B29C2945/76451—Measurement means
    • B29C2945/76461—Optical, e.g. laser
    • 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
    • B29C2945/76494—Controlled parameter
    • B29C2945/76531—Temperature
    • 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
    • B29C2945/76494—Controlled parameter
    • B29C2945/76538—Viscosity
    • 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
    • B29C2945/76929—Controlling method
    • B29C2945/76939—Using stored or historical data sets
    • B29C2945/76943—Using stored or historical data sets compare with thresholds

Definitions

  • the invention relates to a method for monitoring and / or regulating the melt filling of at least one cavity of an injection molding machine, in particular with a cold runner tool, and a device therefor.
  • the flow properties in the distribution system and cavities are calculated in advance to then compensate for certain properties by machining the manifolds mechanically. This does not really solve the problem, as this can not resolve fluctuations in the flow path of the melt.
  • Object of the present invention is, especially in cold runner tools fluctuations in Spritzgiesszyklen, which are particularly due to fluctuations in the melt, to recognize and to homogenize the melt flow as possible. ,
  • Plastic melt reaches this with the same machine setting and the same tool a certain flow path length within a certain time.
  • a high viscosity causes a short
  • a change in the viscosity can be determined by the fact that a sensor detects the arrival of the melt in the cavity at the flow path end.
  • This may be a sensor that optically detects the temperature of the tool wall, the temperature in the plane of the inner wall of the cavity, the pressure in the cavity or even the melt. In the latter case, it may, for example, be an optical fiber which "sees" the melt as it were.
  • a signal change is brought about when the melt reaches the position of the sensor The signal change is automatically detected so that it is also determined automatically. whether the plastic melt has become highly viscous or low-viscosity due to material or process fluctuations.
  • the plastic melt requires more time to reach the sensor position with the same machine setting, it has become more viscous. To compensate for this, the viscosity must be reduced. This could happen once by the addition of solvent or the like, but this also affects the other properties of the melt.
  • the easiest way to reduce the viscosity is to lower the temperature of the melt is increased. This can be done at any point of the injection molding machines, which is passed by the melt. The easiest way to do this is at the injection unit or at an injection nozzle of the injection unit. For example, here offer heating bands, which are placed around the unit and / or the nozzle. Other heating elements are also conceivable. It is also possible to use the friction or friction energy of the screw in the cylinder of the unit for a heat input into the melt.
  • the viscosity has become lower. To compensate for this, it is sufficient to reduce the temperature at the injection unit of the machine.
  • the entire process is automated.
  • the measuring signals preferably cavity temperature signals
  • the setpoint values of cylinder temperatures at the injection unit after each cycle e.g. via a master computer interface, communicated to the machine control.
  • the machine control e.g. via a master computer interface
  • the method according to the invention namely the change in viscosity, measured over the time increase of the measuring signals, can not only be used to control the injection molding machine or the viscosity of the melt, but in individual cases it may also be sufficient to monitor the viscosity change within certain tolerance limits. If cycles then exceed these tolerance limits, the molded parts produced are sorted out as reject parts. DESCRIPTION OF THE FIGURES
  • a cold runner tool 2 in which recesses in a fixed mold plate 3 and in a movable mold plate 4, a cavity 5 is formed.
  • this cavity 5 opens a shown only by the arrow 6 cold channel, is introduced through the melt from an injection unit 7 in the cavity 5.
  • This injection unit 7 is connected to an extruder 8 in connection, which is associated with a hopper 9 for plastic material.
  • melt is pressed into the cavity 5 via the injection unit 7 and the cold runner. This melt fills the cavity 5. After a certain flow path, it reaches a sensor 10.
  • This sensor 10 is positioned as close as possible to the flow path end and can determine, for example, the temperature of the inner wall of the cavity. It can also be an internal pressure sensor or an optical sensor which observes the flow of the melt.
  • the sensor 10 is connected via an evaluation unit 11 to a machine interface 12, via which the control of the entire machine is addressed.
  • a tempering device for the melt is also coupled to this machine interface 12, wherein this tempering device in the present exemplary embodiment consists of four heating strips 13.1 to 13.4.
  • the evaluation unit if necessary after exceeding a tolerance range, sends a signal to the machine location that the temperature of the heating bands must be changed. If, for example, the flow path takes longer, this is an indication that the viscosity of the melt is increased.
  • the viscosity can be reduced again by increasing the temperature at the injection unit. The temperature on the injection unit is reduced when the viscosity is reduced, ie the flow path up to the sensor becomes faster.

Abstract

La présente invention concerne un procédé pour surveiller et/ou régler le remplissage d'au moins une cavité (5) d'une machine de moulage par injection (P), avec une matière en fusion, en particulier au moyen d'un outil à canal froid (2). L'invention permet de surveiller le temps nécessaire pour que la matière en fusion atteigne un capteur (10) dans la cavité (5), et de modifier la viscosité en cas de variations ou de différences de ce temps.
EP06776148A 2005-07-08 2006-07-07 Procede pour surveiller et/ou regler le remplissage d'au moins une cavite avec une matiere en fusion Withdrawn EP1912774A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005032367A DE102005032367A1 (de) 2005-07-08 2005-07-08 Verfahren zum Überwachen und/oder Regeln der Schmelzebefüllung von zumindest einer Kavität
PCT/EP2006/006652 WO2007006496A1 (fr) 2005-07-08 2006-07-07 Procede pour surveiller et/ou regler le remplissage d'au moins une cavite avec une matiere en fusion

Publications (1)

Publication Number Publication Date
EP1912774A1 true EP1912774A1 (fr) 2008-04-23

Family

ID=36986151

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06776148A Withdrawn EP1912774A1 (fr) 2005-07-08 2006-07-07 Procede pour surveiller et/ou regler le remplissage d'au moins une cavite avec une matiere en fusion

Country Status (6)

Country Link
US (1) US20090278274A1 (fr)
EP (1) EP1912774A1 (fr)
JP (1) JP2009500197A (fr)
KR (1) KR20080037652A (fr)
DE (1) DE102005032367A1 (fr)
WO (1) WO2007006496A1 (fr)

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Publication number Priority date Publication date Assignee Title
JP5018481B2 (ja) * 2005-09-28 2012-09-05 コニカミノルタアドバンストレイヤー株式会社 射出成形装置
HUE024564T2 (en) 2007-09-20 2016-02-29 Priamus System Tech Ag A method and apparatus for controlling, documenting and / or controlling an injection molding machine
DE202010007655U1 (de) * 2010-06-07 2011-09-08 Ulrich Seuthe Vorrichtung zur Überwachung und Optimierung von Spritzgießprozessen
DE102010035958B8 (de) * 2010-08-31 2012-07-05 Airbus Operations Gmbh Vorrichtung und Verfahren zur Herstellung eines Bauteils sowie Flugzeugstrukturbauteil
US8715547B2 (en) 2011-02-24 2014-05-06 Mold-Masters (2007) Limited Closed loop control of auxiliary injection unit
US9097565B2 (en) * 2012-03-30 2015-08-04 Beaumont Technologies, Inc. Method and apparatus for material flow characterization
DE102013203747A1 (de) * 2013-03-05 2014-09-11 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung zum ermitteln der korrosivität einer kunststoffschmelze
CN104290292A (zh) * 2013-07-18 2015-01-21 昆山德安模具设计有限公司 一种智能注塑机
AU2014296142A1 (en) * 2013-08-01 2016-02-18 iMFLUX Inc. Injection molding machines and methods for accounting for changes in material properties during injection molding runs
US8980146B2 (en) * 2013-08-01 2015-03-17 Imflux, Inc. Injection molding machines and methods for accounting for changes in material properties during injection molding runs
EP3031594B1 (fr) * 2013-08-09 2017-08-09 Nissan Motor Co., Ltd. Procédé de régulation d'injection et dispositif de régulation d'injection
DE102013111257B3 (de) 2013-10-11 2014-08-14 Kraussmaffei Technologies Gmbh Verfahren zur Prozessführung eines Formfüllvorgangs einer Spritzgießmaschine
JP6625349B2 (ja) * 2015-06-01 2019-12-25 住友重機械工業株式会社 射出成形機
DE102018126313A1 (de) 2018-10-23 2020-04-23 Kraussmaffei Technologies Gmbh Verfahren zum Betreiben einer Spritzgießmaschine, insbesondere hinsichtlich verbesserter konstanter Werkzeugfüllung, sowie Spritzgießmaschine zur Durchführung des Verfahrens
WO2023114049A1 (fr) 2021-12-13 2023-06-22 Barnes Group Inc. Dispositif et méthode de moulage par injection

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Also Published As

Publication number Publication date
DE102005032367A1 (de) 2007-01-11
US20090278274A1 (en) 2009-11-12
KR20080037652A (ko) 2008-04-30
WO2007006496A1 (fr) 2007-01-18
JP2009500197A (ja) 2009-01-08

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