DE102004006162A1 - Injection molding tool heating method involves controling temperature difference across the tool by measurement of feed and return line temperatures and controling fluid flow using the temperature difference - Google Patents
Injection molding tool heating method involves controling temperature difference across the tool by measurement of feed and return line temperatures and controling fluid flow using the temperature difference Download PDFInfo
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- DE102004006162A1 DE102004006162A1 DE200410006162 DE102004006162A DE102004006162A1 DE 102004006162 A1 DE102004006162 A1 DE 102004006162A1 DE 200410006162 DE200410006162 DE 200410006162 DE 102004006162 A DE102004006162 A DE 102004006162A DE 102004006162 A1 DE102004006162 A1 DE 102004006162A1
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- temperature
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- return
- control loop
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Classifications
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- 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
- B29C2945/7604—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
- B29C2945/76451—Measurement means
- B29C2945/76454—Electrical, e.g. 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
- 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
- B29C2945/76545—Flow rate
-
- 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
- B29C2945/76655—Location of control
- B29C2945/76775—Fluids
- B29C2945/76782—Fluids temperature control fluids
-
- 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
- B29C2945/76933—The operating conditions are corrected immediately, during the same phase or cycle
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/007—Tempering units for temperature control of moulds or cores, e.g. comprising heat exchangers, controlled valves, temperature-controlled circuits for fluids
-
- 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
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
Abstract
Description
Die vorliegende Erfindung betrifft ein Verfahren zur Temperierung eines Spritzgießwerkzeugs gemäß dem Oberbegriff des Anspruchs 1, sowie eine Vorrichtung zur Durchführung dieses Verfahrens gemäß dem Oberbegriff des Anspruchs 3.The The present invention relates to a method for controlling the temperature of a injection mold according to the generic term of claim 1, and a device for carrying out this Method according to the preamble of claim 3.
Vorrichtungen zur Temperierung der Formhälften von Spritzgießwerkzeugen, insbesondere zur CD- und DVD-Produktion, sind in unterschiedlichen Ausführungsformen bekannt. Derartige Temperiervorrichtungen umfassen Temperiermittel-Regelkreise, in denen ein flüssiges Temperiermittel wie beispielsweise Wasser zirkuliert und durch einen innerhalb einer Formhälfte des Werkzeugs verlaufenden Temperierkanal geleitet wird. Auf diese Weise wird das Werkzeug auf einer geeigneten Produktionstemperatur gehalten. Damit eine gleichbleibend gute Qualität der Spritzlinge und eine hohe Wiederholgenauigkeit beim Spritzvorgang gewährleistet wird, ist es erforderlich, die Temperaturverhältnisse innerhalb des Werkzeugs zu kontrollieren. Zu diesem Zweck wird die Temperatur des Temperiermittels geregelt, indem ein Temperaturfühler ständig die Temperatur im Regelkreis mißt und die Temperatur bei Abweichung von einer vorgegebenen Soll-Temperatur entsprechend erhöht oder gesenkt wird. Dies geschieht durch Heizelemente sowie Kühlwasser-Zuläufe, deren Leistung bzw.. Durchsatz in Abhängigkeit von der gemessenen Temperatur als Regelgröße geregelt wird.devices for tempering the mold halves of injection molds, in particular for CD and DVD production, are in different embodiments known. Such temperature control devices comprise temperature control circuits, in which a liquid Temperature control such as water circulates and through a within a mold half of the tool running tempering is passed. To this Way, the tool is at a suitable production temperature held. So that a consistently good quality of injection molded parts and a ensures high repeat accuracy during the injection process, it is necessary the temperature conditions within the tool. For this purpose, the Temperature of the temperature controlled by a temperature sensor constantly the Temperature in the control circuit measures and the temperature at a deviation from a predetermined target temperature increased accordingly or lowered. This is done by heating elements and cooling water inlets whose Performance or throughput depending on is controlled by the measured temperature as a controlled variable.
Abhängig von der Art des herzustellenden Spritzlings kann es sich als erforderlich erweisen, zur unabhängigen Temperierung unterschiedlicher Teile des Spritzgießwerkzeugs mehrere Regelkreise vorzusehen. Insbesondere weisen Standard-Spritzgießwerkzeuge zur CD- oder DVD-Produktion eine größere Anzahl von Temperierkreisläufen pro Werkzeug auf, die dazu dienen, einerseits den Formhohlraum des Werkzeugs auf einem gewünschten Temperaturniveau und andererseits die Angießbuchse und die Stanzereinheit auf einem niedrigeren Niveau zu halten. Ferner ist es möglich, Angießbuchse und Stanzereinheit gemeinsam oder individuell zu temperieren. Daher ist es unumgänglich, mehrere Geräteeinheiten entsprechend der Zahl der einzusetzenden Regelkreise vorzusehen. Üblich ist der Einsatz von drei oder vier Temperiergeräten pro Werkzeug.Depending on The type of sprue to be produced may prove necessary prove to be independent Temperature control of different parts of the injection mold to provide several control loops. In particular, have standard injection molds For CD or DVD production, a larger number of temperature control circuits per Tool on, on the one hand, the mold cavity of the tool on a desired Temperature level and on the other hand, the sprue bushing and the punching unit to keep at a lower level. Furthermore, it is possible to sprue bushing and punching unit to temper together or individually. Therefore is it inevitable several units of equipment according to the number of control circuits to be used. It is usual the use of three or four temperature control units per tool.
Die Möglichkeiten zur Kontrolle der Temperaturverteilung innerhalb des Werkzeugs bleiben jedoch darauf beschränkt, den Verlauf der unabhängigen Temperierkanäle in den Formhälften des Werkzeugs und die Temperatur des durchgeleiteten Temperiermittels vorzugeben. Tritt während des Spritzvorgangs innerhalb des Werkzeugs eine unerwünschte Temperaturverteilung auf, die das Produktionsergebnis negativ beeinflußt, sind die Möglichkeiten zur Prozeßsteuerung häufig unzureichend.The options to control the temperature distribution within the tool but limited to the course of the independent tempering in the mold halves of the tool and the temperature of the passed tempering pretend. Kicks while the injection process within the tool an undesirable temperature distribution which negatively affects the production result the possibilities for process control often insufficient.
Aufgabe der Erfindung ist es daher, ein Verfahren zur Temperierung eines Spritzgießwerkzeugs der eingangs genannten Art sowie eine entsprechende Vorrichtung zu schaffen, die die Möglichkeiten zur Einflußnahme auf die Temperaturverhältnisse innerhalb des Werkzeugs während des Herstellungsprozesses erweitern und auf diese Weise eine gleichbleibende Abformqualität der Spritzlinge und eine hohe Wiederholgenauigkeit gewährleisten.task The invention is therefore a method for controlling the temperature of a Injection mold of the to provide the type mentioned above and a corresponding device, the possibilities to influence on the temperature conditions inside the tool during expand the manufacturing process and in this way a consistent Abformqualität ensure the molded parts and a high repeatability.
Diese Aufgabe wird erfindungsgemäß durch ein Verfahren mit den Merkmalen des Anspruchs 1 sowie durch eine Vorrichtung mit den Merkmalen des Anspruchs 2 gelöst.These The object is achieved by a Method with the features of claim 1 and by a device solved with the features of claim 2.
Das erfindungsgemäße Verfahren umfaßt außer der bekannten Regelung der Temperatur des Temperiermittels eine Regelung der Temperaturdifferenz, die innerhalb des Werkzeugs auftritt, also zwischen dem Temperiermittel-Einlass und dem Auslass des Spritzgießwerkzeugs. Dies geschieht durch Messung der Temperiermittel-Temperaturen innerhalb der Vorlaufleitung sowie in der Rücklaufleitung des Regelkreises und durch Regelung des Temperiermittel-Stroms durch den Regelkreis, bei der die Differenz zwischen der gemessenen Vorlauf- und der Rücklauftemperatur als Regelgröße dient.The inventive method includes except the known regulation of the temperature of the temperature control a scheme the temperature difference that occurs within the tool, so between the temperature control inlet and the outlet of the injection mold. This is done by measuring the tempering agent temperatures within the Supply line and in the return line the control circuit and by controlling the temperature control flow through the Control loop, in which the difference between the measured flow and the return temperature serves as a controlled variable.
Die Temperaturdifferenz stellt also einen zusätzlichen Prozeßparameter des erfindungsgemäßen Verfahrens dar, auf den während des Produktionsvorgangs Einfluß genommen werden kann. Die zusätzliche Regelung ermöglicht es, die Temperaturdifferenz innerhalb des Werkzeugs auf einen bestimmten Wert zu regeln und damit konstante Produktionsverhältnisse sicherzustellen. Auf diese Weise wird eine zusätzliche Möglichkeit geschaffen, in den Herstellungsprozeß einzugreifen.The Temperature difference thus provides an additional process parameter the method according to the invention on the during influenced the production process can be. The additional Regulation possible it, the temperature difference within the tool to a certain To regulate value and thus constant production conditions sure. In this way, an additional possibility is created in the Intervene manufacturing process.
Eine entsprechende Vorrichtung zur Temperierung des Spritzgießwerkzeugs umfaßt jeweils einen Temperaturfühler in der Vorlaufleitung und in der Rücklaufleitung. Ein im Regelkreis vorgesehenes Durchflußventil regelt den Temperiermittel-Strom unter Verwendung der Differenz zwischen den Temperaturwerten, die in der Vorlaufleitung und in der Rücklaufleitung gemessen werden, als Regelgröße.A corresponding device for temperature control of the injection mold comprises one temperature sensor each in the flow line and in the return line. One in the control loop provided flow valve regulates the tempering agent flow using the difference between the temperature values in the supply line and in the return line be measured, as a controlled variable.
Vorzugsweise umfaßt der Regelkreis ferner ein Heizelement, eine Pumpe und einen Anschluß an einen Kühlwasserkreislauf.Preferably comprises the control circuit further comprises a heating element, a pump and a connection to a Cooling water circuit.
Der Anschluß an den Kühlwasserkreislauf umfaßt vorzugsweise einen Kühlwasser-Vorlauf, der in den Vorlauf des Regelkreises mündet, sowie einen Kühlwasserkücklauf, der vom Rücklauf des Regelkreises abzweigt.The connection to the cooling water circuit preferably comprises a cooling water flow, the flows into the flow of the control loop, and a cooling water return, which branches off from the return of the control loop.
In einer weiteren bevorzugten Ausführungsform zweigt von dem Regelkreis ein Nebenkreis ab, der ein weiteres Spritzgießwerkzeug oder wahlweise eine weitere Formhälfte speist, die zu derjenigen komplementär ist, die durch den Regelkreis temperiert wird.In a further preferred embodiment branches from the control loop from a secondary circuit, which is another injection mold or alternatively feeds another mold half which is complementary to that which is tempered by the control loop.
Diese Kombination von Regelkreis und daran angeschlossenem Nebenkreis bietet sich insbesondere in Fällen an, in denen die Temperaturniveaus der einzelnen Werkzeuge eng beieinander liegen. Der Regelkreis und der Nebenkreis können in diesem Fall bestimmte Betriebseinrichtungen wie etwa das oben erwähnte Heizelement, die Pumpe und den Kühlwasser-Anschluß gemeinsam nutzen, so daß sich ein vereinfachter, kostensparender Aufbau ergibt.These Combination of control loop and connected secondary circuit especially in cases in which the temperature levels of the individual tools are close together lie. The control loop and the secondary circuit can be specific in this case Operating equipment such as the above-mentioned heating element, the pump and the cooling water connection together use, so that a simplified, cost-saving design results.
Vorzugsweise zweigt der Nebenkreis-Vorlauf stromaufwärts des Durchflußventils des Regelkreises ab. Der Nebenkreis umfaßt selbst ein Nebenkreis-Durchflußventil sowie einen im Nebenkreis-Rücklauf angeordneten Nebenkreis-Temperaturfühler. Der Temperaturfühler in der Vorlaufleitung des Regelkreises ist hierbei stromaufwärts des Abzweigs des Nebenkreis-Vorlaufs angeordnet, und der Temperaturfühler in der Rücklaufleitung des Regelkreises ist stromaufwärts der Einmündung des Nebenkreis-Rücklaufs angeordnet.Preferably branches the Nebenkreis supply upstream of the flow valve of the control loop. The secondary circuit itself includes a secondary circuit flow valve and one in the secondary circuit return arranged auxiliary circuit temperature sensor. The temperature sensor in the flow line of the control loop is in this case upstream of the Arranged branch of the secondary circuit flow, and the temperature sensor in the return line of the control circuit is upstream the confluence of the secondary circuit return arranged.
Im folgenden wird eine bevorzugte Ausführungsform der Erfindung anhand der beigefügten Zeichnung näher erläutert.in the The following is a preferred embodiment of the invention based the attached drawing explained in more detail.
Die
Figur zeigt eine Vorrichtung
Ein
Nebenkreis
Der
Regelkreis
Die
Kühlwasser-Vorlaufleitung
Zur
Regelung des Kühlwasser-Zustroms
umfaßt
die Kühlwasser-Vorlaufleitung
Erfindungsgemäß umfaßt der Regelkreis
Die
Temperaturdifferenz in der Vorlaufleitung
Der
Nebenkreis
Mit
Hilfe des Nebenkreises
Die
gezeigte Vorrichtung
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410006162 DE102004006162B4 (en) | 2004-02-07 | 2004-02-07 | Injection molding tool heating method involves controling temperature difference across the tool by measurement of feed and return line temperatures and controling fluid flow using the temperature difference |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE200410006162 DE102004006162B4 (en) | 2004-02-07 | 2004-02-07 | Injection molding tool heating method involves controling temperature difference across the tool by measurement of feed and return line temperatures and controling fluid flow using the temperature difference |
Publications (2)
Publication Number | Publication Date |
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DE102004006162A1 true DE102004006162A1 (en) | 2005-10-06 |
DE102004006162B4 DE102004006162B4 (en) | 2006-01-26 |
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DE200410006162 Expired - Fee Related DE102004006162B4 (en) | 2004-02-07 | 2004-02-07 | Injection molding tool heating method involves controling temperature difference across the tool by measurement of feed and return line temperatures and controling fluid flow using the temperature difference |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103963254A (en) * | 2013-02-04 | 2014-08-06 | 恩格尔奥地利有限公司 | Method For The Temperature Control Of A Forming Tool |
CN105172171A (en) * | 2015-10-22 | 2015-12-23 | 南通银湖通讯设备科技有限公司 | Matrix type heating temperature control platform device for thermocuring mold |
CN105404329A (en) * | 2014-07-03 | 2016-03-16 | 恩格尔奥地利有限公司 | Method and device for regulating temperature of molding die |
CN106827459A (en) * | 2017-02-24 | 2017-06-13 | 杭州新子新能源股份有限公司 | A kind of EVA adhesive film production line barrel Temperature Intelligent Control System and its control method |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT518682A1 (en) * | 2016-06-03 | 2017-12-15 | Engel Austria Gmbh | Control device for controlling at least one controlled variable at least one temperature control |
Citations (3)
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DE4436117C2 (en) * | 1994-09-27 | 1997-10-02 | Riesselmann F & H Kunststoff | Process for temperature control of injection molding machine units and mold tool units for plastics processing |
DE29917075U1 (en) * | 1999-09-14 | 2000-01-13 | Wittmann Kunststoffgeraete | Device for tempering molds of injection molding machines |
DE10329494B3 (en) * | 2003-06-30 | 2004-07-01 | Technotrans Ag | Tempering unit for injection moulding tools, comprises a circulating inner tempering agent circuit, a heating circuit, connection lines and a control valve |
-
2004
- 2004-02-07 DE DE200410006162 patent/DE102004006162B4/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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DE4436117C2 (en) * | 1994-09-27 | 1997-10-02 | Riesselmann F & H Kunststoff | Process for temperature control of injection molding machine units and mold tool units for plastics processing |
DE29917075U1 (en) * | 1999-09-14 | 2000-01-13 | Wittmann Kunststoffgeraete | Device for tempering molds of injection molding machines |
DE10329494B3 (en) * | 2003-06-30 | 2004-07-01 | Technotrans Ag | Tempering unit for injection moulding tools, comprises a circulating inner tempering agent circuit, a heating circuit, connection lines and a control valve |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103963254A (en) * | 2013-02-04 | 2014-08-06 | 恩格尔奥地利有限公司 | Method For The Temperature Control Of A Forming Tool |
CN103963254B (en) * | 2013-02-04 | 2017-08-25 | 恩格尔奥地利有限公司 | Method for carrying out temperature adjustment to mould |
US9908267B2 (en) | 2013-02-04 | 2018-03-06 | Engel Austria Gmbh | Method for temperature control of a shaping tool |
CN105404329A (en) * | 2014-07-03 | 2016-03-16 | 恩格尔奥地利有限公司 | Method and device for regulating temperature of molding die |
CN105404329B (en) * | 2014-07-03 | 2018-09-11 | 恩格尔奥地利有限公司 | Method and apparatus for carrying out temperature adjustment to molding die |
CN105172171A (en) * | 2015-10-22 | 2015-12-23 | 南通银湖通讯设备科技有限公司 | Matrix type heating temperature control platform device for thermocuring mold |
CN105172171B (en) * | 2015-10-22 | 2018-08-03 | 佛山市顺德区康特博塑料制品有限公司 | A kind of matrix form for thermoset mold heats temperature control console device |
CN106827459A (en) * | 2017-02-24 | 2017-06-13 | 杭州新子新能源股份有限公司 | A kind of EVA adhesive film production line barrel Temperature Intelligent Control System and its control method |
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DE102004006162B4 (en) | 2006-01-26 |
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