WO2002081177A1 - Verfahren zum füllen der kavität eines werkzeuges - Google Patents
Verfahren zum füllen der kavität eines werkzeuges Download PDFInfo
- Publication number
- WO2002081177A1 WO2002081177A1 PCT/EP2002/003609 EP0203609W WO02081177A1 WO 2002081177 A1 WO2002081177 A1 WO 2002081177A1 EP 0203609 W EP0203609 W EP 0203609W WO 02081177 A1 WO02081177 A1 WO 02081177A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cavity
- melt
- tool
- filling
- flow path
- 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.)
- Ceased
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
- B29C45/78—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
- 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
- B29C45/76—Measuring, controlling or regulating
- B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
- B29C2045/776—Measuring, controlling or regulating of velocity or pressure of moulding material determining the switchover point to the holding pressure
Definitions
- the invention relates to a method for filling a cavity of a tool for producing a molded part from a melt, in particular a cavity of an injection molding machine, the melt being introduced into the cavity under pressure and being pressurized towards the end or at the end of its flow path.
- the cavity is filled in a mold with a melt, in particular made of plastic, metal or a ceramic. This filling process continues until the cavity is filled, after which there is a switch to the so-called holding pressure phase, in which above all
- BESTATIGUNGSKOPIE a shrinkage of the material in the cavity is compensated for.
- a fixed switch from the injection process to the holding pressure process cannot be based on process-related fluctuations e.g. react to the viscosity, which in turn results in a large fluctuation in the quality of the molded parts.
- the existing methods are usually based on the measurement of the internal pressure. For example, the “kink” between the filling and the holding pressure phase, which results automatically, is determined with the help of artificial intelligence.
- the present invention is based on the object of developing a method of the type mentioned above, with which switching to the holding pressure phase is carried out in a simple and inexpensive manner and yet relatively precisely.
- the solution to this task is that the mold wall temperature is determined towards the end of the flow path of the melt and the switchover point to the holding pressure phase is determined.
- the new method is therefore based on the measurement of the mold inner wall temperature at the end of the flow of the melt.
- the basic consideration here is the fact that, theoretically, switching should always take place at approx. 97 to 98% of the flow path in order to finally achieve the desired 100% due to the inertia.
- the melt reaches the position of a corresponding one
- Thermocouple there is an abrupt signal increase that takes place without further intelligence, e.g. can be used as an analog switching signal.
- thermocouple Since the flow path length is known to the toolmaker in all cases, a corresponding specification for Positioning an inexpensive thermocouple can be made without any difficulty.
- thermocouple can also perform other functions. For example, it can be used to regulate the shrinkage, regulate the temperature depending on the cooling time or even automatically balance the volumetric filling of the cavity.
- a system on the market regulates the melt flow of individual injection nozzles using separate pistons, in which the pressure in the hot runner is measured. This procedure allows each individual piston to regulate a predetermined speed or, analogously, a predetermined melt flow. However, it is not possible in this way to implement a control depending on the molded part quality based on real measurement signals in the molded part itself.
- the volumetric filling can be determined automatically for each gate or for each hot runner nozzle and the control process can be influenced in this way (switching from filling process to holding pressure process).
- Figure 1 is a schematic representation of family tools
- FIG. 2 shows a schematic illustration, partly in section, of a modular tool system
- Figure 3 is a schematic representation of multiple tools
- Figure 4 is a schematic representation of a single tool with multiple connection.
- Each cavity 1.1 to 1.4 has a different geometry, depending on the shape of the part.
- a melt is entered through the injection point 2 into the cavity 1.1 to 1.4, a melt front being identified by 3.
- each cavity 1.1 to 1.4 is assigned a thermocouple 4.
- thermocouple 4 By positioning a thermocouple 4 at the end of the respective flow path, it is automatically determined in each cavity 1.1 to 1.4 5 when the volumetric filling is reached. At the same time, the measured wall temperatures can also be used for further regulation of the shrinkage.
- a tool 5 is indicated, which consists of two tool inserts 6.1 and 6.2.
- the tool insert 6.2 should be interchangeable.
- Tool inserts have to be changed very often, as is the case with a modular tool system.
- thermocouples at the end of each filling process, this switchover point is always determined automatically, so that this optimization step is not necessary.
- a multiple tool with a multiplicity of cavities 1 is indicated in FIG. 3, each cavity 1 having its own injection point 2 and its own thermocouple 4.
- the goal with a multiple tool with several geometrically identical cavities is to regulate the melt flow in such a way that all cavities are filled and switched over at the same time. such balancing system. If not used, it is often the processor's wish to switch depending on a specific, selectable cavity. In this case, too, this switchover can be carried out automatically and much more simply with the aid of a thermocouple, the tool wall temperature in turn providing additional information, for example for regulating the shrinkage of parts.
- a simple tool according to FIG. 4 with a multiple connection is generally a very large molded part (for example a bumper) with long flow paths.
- the problem here is usually not to find a single switchover point, but to regulate the flow front of the melt up to the volumetric filling with the aid of sensors in the cavity in such a way that the hot runner nozzles at each injection point 2 can be controlled in accordance with the programming.
- This principle can be implemented with relatively expensive cavity pressure sensors, but relatively inexpensive thermocouples 4 serve the same purpose. If the individual melt flows are individually controlled as above, the same principle applies analogously.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT02730084T ATE288822T1 (de) | 2001-04-05 | 2002-04-02 | Verfahren zum füllen der kavität eines werkzeuges |
| DE50202221.3T DE50202221C5 (de) | 2001-04-05 | 2002-04-02 | Verfahren zum füllen der kavität eines werkzeuges |
| US10/473,521 US7682535B2 (en) | 2001-04-05 | 2002-04-02 | Method of filling the cavity of a tool |
| JP2002579196A JP4278986B2 (ja) | 2001-04-05 | 2002-04-02 | 成形金型のキャビティーを充填させるための方法 |
| EP02730084A EP1381502B1 (de) | 2001-04-05 | 2002-04-02 | Verfahren zum füllen der kavität eines werkzeuges |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10116998.1 | 2001-04-05 | ||
| DE10116998A DE10116998A1 (de) | 2001-04-05 | 2001-04-05 | Verfahren zum Füllen der Kavität eines Werkzeuges |
| DE2001155162 DE10155162A1 (de) | 2001-11-12 | 2001-11-12 | Verfahren zum Füllen der Kavität eines Werkzeuges |
| DE10155162.2 | 2001-11-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2002081177A1 true WO2002081177A1 (de) | 2002-10-17 |
Family
ID=26009013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2002/003609 Ceased WO2002081177A1 (de) | 2001-04-05 | 2002-04-02 | Verfahren zum füllen der kavität eines werkzeuges |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7682535B2 (de) |
| EP (1) | EP1381502B1 (de) |
| JP (1) | JP4278986B2 (de) |
| AT (1) | ATE288822T1 (de) |
| DE (1) | DE50202221C5 (de) |
| WO (1) | WO2002081177A1 (de) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6936199B2 (en) | 2002-01-09 | 2005-08-30 | Mold-Masters, Ltd. | Method and apparatus for measuring the temperature of molten material in a mold cavity |
| WO2006000411A1 (de) * | 2004-06-29 | 2006-01-05 | Priamus System Technologies Ag | Verfahren zum füllen von zumindest einer kavität |
| US7182893B2 (en) | 2002-10-11 | 2007-02-27 | Mold-Masters Limited | Valve gated nozzle having a valve pin with a sensor |
| USRE40478E1 (en) | 2001-10-12 | 2008-09-02 | Mold-Masters (2007) Limited | Valve pin with thermocouple |
| WO2011044705A1 (de) | 2009-10-12 | 2011-04-21 | Kistler Holding Ag | Verfahren zum steuern oder regeln eines einspritzprozesses |
| CH702154A1 (de) * | 2009-11-11 | 2011-05-13 | Kistler Holding Ag | Verfahren zum steuern oder regeln eines einspritzprozesses. |
| CN102652053A (zh) * | 2009-12-18 | 2012-08-29 | 罗伯特·博世有限公司 | 用于制造具有空隙的功能部件的压注方法 |
| EP3071389B1 (de) | 2013-11-22 | 2020-04-15 | Priamus System Technologies AG | Verfahren zum regeln der füllung von zumindest einer kavität |
| EP2212086B2 (de) † | 2007-09-20 | 2023-03-15 | Priamus System Technologies AG | Verfahren und vorrichtung zum überwachen, dokumentieren und/oder regeln einer spritzgiessmaschine |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005029705A1 (de) * | 2005-06-10 | 2006-12-14 | Priamus System Technologies Ag | Verfahren zum Regeln des Spritzgiesprozesses einer Spritzgiessmaschine |
| US20070169985A1 (en) * | 2006-01-24 | 2007-07-26 | Trw Automotive U.S. Llc | Rack and pinion steering assembly |
| US8425217B2 (en) * | 2009-12-23 | 2013-04-23 | Rodney J. Groleau | Method for installing indirect and direct mold pressure, temperature and flow front detection sensors without machining the mold |
| US8377350B2 (en) * | 2011-01-31 | 2013-02-19 | Precision Machinery Research Development Center | Method for controlling temperatures in hot runners of multi-cavity injection mold, method for warning, and control system based on those methods |
| US8715547B2 (en) | 2011-02-24 | 2014-05-06 | Mold-Masters (2007) Limited | Closed loop control of auxiliary injection unit |
| 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 |
| CA2919378C (en) | 2013-08-01 | 2017-11-07 | Imflux, Inc. | Injection molding machines and methods for accounting for changes in material properties during injection molding runs |
| RU2016102831A (ru) | 2013-08-01 | 2017-09-04 | ИМФЛЮКС Инк. | Устройства и способы литья под давлением, учитывающие изменения свойств материала во время процесса литья под давлением |
| US20160158986A1 (en) * | 2013-08-09 | 2016-06-09 | Nissan Motor Co. Ltd. | Injection control method and injection control system |
| US10259152B2 (en) | 2014-12-11 | 2019-04-16 | Otto Männer Innovation GmbH | Injection molding apparatus with heated mold cavities |
| US11712826B2 (en) * | 2019-07-09 | 2023-08-01 | Otrajet Inc. | Injection molding system and injection molding method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61255825A (ja) * | 1985-05-08 | 1986-11-13 | Mitsubishi Heavy Ind Ltd | 多段射出保持圧の切換方法 |
| DE3801216A1 (de) * | 1987-01-19 | 1988-07-28 | Toshiba Machine Co Ltd | Verfahren und vorrichtung zum steuern von spritzgiessmaschinen |
| EP0535274A1 (de) * | 1991-10-01 | 1993-04-07 | MANNESMANN Aktiengesellschaft | Verfahren zur Trendregelung des Umschaltpunktes beim Spritzgiessen |
| DE4140392A1 (de) * | 1991-12-07 | 1993-06-09 | Robert Bosch Gmbh, 7000 Stuttgart, De | Verfahren und vorrichtung zur regelung eines spritzgiessprozesses |
| DE19803352A1 (de) * | 1998-01-29 | 1999-08-26 | Fraunhofer Ges Forschung | Verfahren und Vorrichtung zur Ermittlung des Zeitpunkts eines Druckanstiegs in einer Werkzeugform während eines Kunststoff-Spritzgießverfahrens |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01146720A (ja) * | 1987-12-03 | 1989-06-08 | Toshiba Mach Co Ltd | 射出圧縮成形の型締圧力制御方法および射出圧縮成形機 |
| US6062087A (en) * | 1998-09-23 | 2000-05-16 | Itt Manufacturing Enterprises, Inc. | Heat and pressure sensor apparatus employing a piston in direct contact with the measured fluid |
| CA2427832C (en) * | 2000-11-06 | 2008-01-08 | Frederick J. Buja | Method and apparatus for controlling a mold melt-flow process using temperature sensors |
-
2002
- 2002-04-02 WO PCT/EP2002/003609 patent/WO2002081177A1/de not_active Ceased
- 2002-04-02 AT AT02730084T patent/ATE288822T1/de active
- 2002-04-02 JP JP2002579196A patent/JP4278986B2/ja not_active Expired - Fee Related
- 2002-04-02 US US10/473,521 patent/US7682535B2/en not_active Expired - Lifetime
- 2002-04-02 DE DE50202221.3T patent/DE50202221C5/de not_active Expired - Lifetime
- 2002-04-02 EP EP02730084A patent/EP1381502B1/de not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61255825A (ja) * | 1985-05-08 | 1986-11-13 | Mitsubishi Heavy Ind Ltd | 多段射出保持圧の切換方法 |
| DE3801216A1 (de) * | 1987-01-19 | 1988-07-28 | Toshiba Machine Co Ltd | Verfahren und vorrichtung zum steuern von spritzgiessmaschinen |
| EP0535274A1 (de) * | 1991-10-01 | 1993-04-07 | MANNESMANN Aktiengesellschaft | Verfahren zur Trendregelung des Umschaltpunktes beim Spritzgiessen |
| DE4140392A1 (de) * | 1991-12-07 | 1993-06-09 | Robert Bosch Gmbh, 7000 Stuttgart, De | Verfahren und vorrichtung zur regelung eines spritzgiessprozesses |
| DE19803352A1 (de) * | 1998-01-29 | 1999-08-26 | Fraunhofer Ges Forschung | Verfahren und Vorrichtung zur Ermittlung des Zeitpunkts eines Druckanstiegs in einer Werkzeugform während eines Kunststoff-Spritzgießverfahrens |
Non-Patent Citations (1)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 11, no. 111 (M - 578) 8 April 1987 (1987-04-08) * |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7410354B2 (en) | 2001-10-12 | 2008-08-12 | Mold-Masters (2007) Limited | Valve gated nozzle having a valve pin with a sensor |
| USRE40478E1 (en) | 2001-10-12 | 2008-09-02 | Mold-Masters (2007) Limited | Valve pin with thermocouple |
| USRE40952E1 (en) | 2002-01-09 | 2009-11-10 | Mold-Masters (2007) Limited | Method and apparatus for measuring the temperature of molten material in a mold cavity |
| US6936199B2 (en) | 2002-01-09 | 2005-08-30 | Mold-Masters, Ltd. | Method and apparatus for measuring the temperature of molten material in a mold cavity |
| US7182893B2 (en) | 2002-10-11 | 2007-02-27 | Mold-Masters Limited | Valve gated nozzle having a valve pin with a sensor |
| JP4889632B2 (ja) * | 2004-06-29 | 2012-03-07 | プリーアムス ジステーム テヒノロギース アーゲー | 少なくとも1つのキャビティを充填する方法 |
| WO2006000411A1 (de) * | 2004-06-29 | 2006-01-05 | Priamus System Technologies Ag | Verfahren zum füllen von zumindest einer kavität |
| EP2212086B2 (de) † | 2007-09-20 | 2023-03-15 | Priamus System Technologies AG | Verfahren und vorrichtung zum überwachen, dokumentieren und/oder regeln einer spritzgiessmaschine |
| WO2011044705A1 (de) | 2009-10-12 | 2011-04-21 | Kistler Holding Ag | Verfahren zum steuern oder regeln eines einspritzprozesses |
| CN102574318A (zh) * | 2009-10-12 | 2012-07-11 | 基斯特勒控股公司 | 用于控制或调节注入过程的方法 |
| CN102574318B (zh) * | 2009-10-12 | 2015-11-25 | 基斯特勒控股公司 | 用于控制或调节注入过程的方法 |
| US9387617B2 (en) | 2009-10-12 | 2016-07-12 | Kistler Holding Ag | Method for controlling an injection process in an open-loop or closed-loop manner |
| CH702154A1 (de) * | 2009-11-11 | 2011-05-13 | Kistler Holding Ag | Verfahren zum steuern oder regeln eines einspritzprozesses. |
| CN102652053A (zh) * | 2009-12-18 | 2012-08-29 | 罗伯特·博世有限公司 | 用于制造具有空隙的功能部件的压注方法 |
| US9296137B2 (en) | 2009-12-18 | 2016-03-29 | Robert Bosch Gmbh | Injection molding method for manufacturing a functional part having a recess |
| CN102652053B (zh) * | 2009-12-18 | 2016-10-12 | 罗伯特·博世有限公司 | 用于制造具有空隙的功能部件的压注方法 |
| EP3071389B1 (de) | 2013-11-22 | 2020-04-15 | Priamus System Technologies AG | Verfahren zum regeln der füllung von zumindest einer kavität |
| US12251865B2 (en) | 2013-11-22 | 2025-03-18 | Priamus System Technologies Ag | Method for controlling the filling of at least one cavity |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2004529006A (ja) | 2004-09-24 |
| US20040135277A1 (en) | 2004-07-15 |
| DE50202221C5 (de) | 2018-12-27 |
| DE50202221D1 (de) | 2005-03-17 |
| ATE288822T1 (de) | 2005-02-15 |
| EP1381502A1 (de) | 2004-01-21 |
| EP1381502B1 (de) | 2005-02-09 |
| JP4278986B2 (ja) | 2009-06-17 |
| US7682535B2 (en) | 2010-03-23 |
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