DE102005020716A1 - Method and apparatus for blow molding containers - Google Patents
Method and apparatus for blow molding containers Download PDFInfo
- Publication number
- DE102005020716A1 DE102005020716A1 DE102005020716A DE102005020716A DE102005020716A1 DE 102005020716 A1 DE102005020716 A1 DE 102005020716A1 DE 102005020716 A DE102005020716 A DE 102005020716A DE 102005020716 A DE102005020716 A DE 102005020716A DE 102005020716 A1 DE102005020716 A1 DE 102005020716A1
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- Prior art keywords
- valve
- valve carrier
- carrier
- blow
- blow mold
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000000071 blow moulding Methods 0.000 title claims abstract description 18
- 238000007664 blowing Methods 0.000 claims abstract description 50
- 230000003750 conditioning effect Effects 0.000 claims abstract description 3
- 238000010438 heat treatment Methods 0.000 description 14
- 238000001816 cooling Methods 0.000 description 7
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 239000000969 carrier Substances 0.000 description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 description 4
- 239000005020 polyethylene terephthalate Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 210000003746 feather Anatomy 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- -1 polyethylene terephthalate Polymers 0.000 description 2
- 230000003584 silencer Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000012815 thermoplastic material Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0263—Construction of housing; Use of materials therefor of lift valves multiple way valves
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/4242—Means for deforming the parison prior to the blowing operation
- B29C49/4244—Means for deforming the parison prior to the blowing operation during or after laying preform into the final mould
- B29C49/42444—Means for deforming the parison prior to the blowing operation during or after laying preform into the final mould by moving the transport means
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/58—Blowing means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/029—Electromagnetically actuated valves
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/48—Moulds
- B29C2049/4879—Moulds characterised by mould configurations
- B29C2049/4892—Mould halves consisting of an independent main and bottom part
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/78—Measuring, controlling or regulating
- B29C49/783—Measuring, controlling or regulating blowing pressure
- B29C2049/7831—Measuring, controlling or regulating blowing pressure characterised by pressure values or ranges
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/78—Measuring, controlling or regulating
- B29C49/783—Measuring, controlling or regulating blowing pressure
- B29C2049/7832—Blowing with two or more pressure levels
-
- 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
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/0715—Preforms or parisons characterised by their configuration the preform having one end closed
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/20—Opening, closing or clamping
- B29C33/26—Opening, closing or clamping by pivotal movement
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/06—Injection blow-moulding
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/08—Biaxial stretching during blow-moulding
- B29C49/10—Biaxial stretching during blow-moulding using mechanical means for prestretching
- B29C49/12—Stretching rods
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/08—Biaxial stretching during blow-moulding
- B29C49/10—Biaxial stretching during blow-moulding using mechanical means for prestretching
- B29C49/122—Drive means therefor
- B29C49/1222—Pneumatic
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/08—Biaxial stretching during blow-moulding
- B29C49/10—Biaxial stretching during blow-moulding using mechanical means for prestretching
- B29C49/122—Drive means therefor
- B29C49/1229—Drive means therefor being a cam mechanism
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/28—Blow-moulding apparatus
- B29C49/30—Blow-moulding apparatus having movable moulds or mould parts
- B29C49/36—Blow-moulding apparatus having movable moulds or mould parts rotatable about one axis
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/4289—Valve constructions or configurations, e.g. arranged to reduce blowing fluid consumption
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/64—Heating or cooling preforms, parisons or blown articles
- B29C49/68—Ovens specially adapted for heating preforms or parisons
- B29C49/6855—Cooling of heating means, e.g. avoiding overheating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/10—Polymers of propylene
- B29K2023/12—PP, i.e. polypropylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
Das Verfahren und die Vorrichtung dienen zur Blasformung von Behältern. Ein Vorformling wird nach einer thermischen Konditionierung innerhalb einer Blasform durch Blasdruckeinwirkung in den Behälter umgeformt. Blasgas wird durch ein Anschlußelement hindurch in einen Innenraum des Vorformlings eingeleitet. Das Blasgas wird durch mindestens ein Ventil zugeführt, das von einem relativ zur Blasform beweglich geführten Ventilträger gehaltert ist.The method and device are used for blow molding containers. After thermal conditioning inside a blow mold, a preform is formed into the container by the action of blowing pressure. Blowing gas is introduced through a connection element into an interior space of the preform. The blowing gas is supplied through at least one valve, which is held by a valve carrier that is movably guided relative to the blow mold.
Description
Die Erfindung betrifft ein Verfahren zur Blasformung von Behältern, bei dem ein Vorformling nach einer thermischen Konditionierung innerhalb einer Blasform durch Blasdruckeinwirkung in den Behälter umgeformt wird sowie bei dem ein Blasgas durch ein Anschlußelement hindurch in einen Innenraum des Vorformlings eingeleitet wird.The The invention relates to a method for the blow molding of containers, in a preform after a thermal conditioning within a blow mold converted by blowing pressure into the container is as well as in which a blowing gas through a connecting element into a Interior of the preform is initiated.
Die Erfindung betrifft darüber hinaus eine Vorrichtung zur Blasformung von Behältern, die mindestens eine Blasstation mit einer Blasform aufweist, sowie bei der sich ein Strömungsweg für ein Blasgas zur Blasformung der Behälter durch ein Anschlußelement hindurch erstreckt.The Invention relates to this In addition, an apparatus for blow molding containers, the at least one Blowing station with a blow mold, as well as in the one flow for a Blowgas for blow molding the containers through a connecting element extends through.
Bei einer Behälterformung durch Blasdruckeinwirkung werden Vorformlinge aus einem thermoplastischen Material, beispielsweise Vorformlinge aus PET (Polyethylenterephthalat), innerhalb einer Blasmaschine unterschiedlichen Bearbei tungsstationen zugeführt. Typischerweise weist eine derartige Blasmaschine eine Heizeinrichtung sowie eine Blaseinrichtung auf, in deren Bereich der zuvor temperierte Vorformling durch biaxiale Orientierung zu einem Behälter expandiert wird. Die Expansion erfolgt mit Hilfe von Druckluft, die in den zu expandierenden Vorformling eingeleitet wird. Der verfahrenstechnische Ablauf bei einer derartigen Expansion des Vorformlings wird in der DE-OS 43 40 291 erläutert. Die einleitend erwähnte Einleitung des unter Druck stehenden Gases umfaßt auch die Druckgaseinleitung in die sich entwickelnde Behälterblase sowie die Druckgaseinleitung in den Vorformling zu Beginn des Blasvorganges.at a container molding by blowing pressure are preforms of a thermoplastic Material, for example PET preforms (polyethylene terephthalate), within a blow molding machine different processing stations fed. Typically, such a blow molding machine has a heating device and a blowing device, in the region of which previously tempered Preform expanded by biaxial orientation to a container becomes. The expansion takes place with the help of compressed air, which in the is initiated to expanding preform. The procedural Sequence in such an expansion of the preform is in the DE-OS 43 40 291 explained. The introductory mentioned Introduction of the pressurized gas also includes the introduction of compressed gas in the developing container bubble and the introduction of compressed gas into the preform at the beginning of the blowing process.
Der grundsätzliche Aufbau einer Blasstation zur Behälterformung wird in der DE-OS 42 12 583 beschrieben. Möglichkeiten zur Temperierung der Vorformlinge werden in der DE-OS 23 52 926 erläutert.Of the fundamental Construction of a blowing station for container molding is described in DE-OS 42 12 583. Possibilities for tempering The preforms are described in DE-OS 23 52 926.
Innerhalb der Vorrichtung zur Blasformung können die Vorformlinge sowie die geblasenen Behälter mit Hilfe unterschiedlicher Handhabungseinrichtungen transportiert werden. Bewährt hat sich insbesondere die Verwendung von Transportdornen, auf die die Vorformlinge aufgesteckt werden. Die Vorformlinge können aber auch mit anderen Trageinrichtungen gehandhabt werden. Die Verwendung von Greifzangen zur Handhabung von Vorformlingen und die Verwendung von Spreizdornen, die zur Halterung in einen Mündungsbereich des Vorformlings einführbar sind, gehören ebenfalls zu den verfügbaren Konstruktionen.Within the blow molding apparatus, the preforms and the blown containers transported by means of different handling devices become. proven In particular, the use of transport thorns, to which the preforms are attached. But the preforms can be handled with other support devices. The usage grippers for handling preforms and use of expanding mandrels for mounting in a mouth region of the preform insertable are, belong also available Constructions.
Eine Handhabung von Behältern unter Verwendung von Übergaberädern wird beispielsweise in der DE-OS 199 06 438 bei einer Anordnung des Übergaberades zwischen einem Blasrad und einer Ausgabestrecke beschrieben.A Handling of containers using transfer wheels For example, in DE-OS 199 06 438 in an arrangement of the transfer wheel between a blowing wheel and an output path.
Die bereits erläuterte Handhabung der Vorformlinge erfolgt zum einen bei den sogenannten Zweistufenverfahren, bei denen die Vorformlinge zunächst in einem Spritzgußverfahren hergestellt, anschließend zwischengelagert und erst später hinsichtlich ihrer Temperatur konditioniert und zu einem Behälter aufgeblasen werden. Zum anderen erfolgt eine Anwendung bei den sogenannten Einstufenverfahren, bei denen die Vorformlinge unmittelbar nach ihrer spritzgußtechnischen Herstellung und einer ausreichenden Verfestigung geeignet temperiert und anschließend aufgeblasen werden.The already explained Handling of the preforms takes place on the one hand in the so-called two-stage process, where the preforms initially in an injection molding process produced, then stored and later conditioned in temperature and inflated to a container become. On the other hand, an application in the so-called one-step process, in which the preforms immediately after their injection molding Manufacture and sufficient solidification suitable tempered and subsequently be inflated.
Im Hinblick auf die verwendeten Blasstationen sind unterschiedliche Ausführungsformen bekannt. Bei Blasstationen, die auf rotierenden Transporträdern angeordnet sind, ist eine buchartige Aufklappbarkeit der Formträger häufig anzutreffen. Es ist aber auch möglich, relativ zueinander verschiebliche oder andersartig geführte Formträger einzusetzen. Bei ortsfesten Blasstationen, die insbesondere dafür geeignet sind, mehrere Kavitäten zur Behälterformung aufzunehmen, werden typischerweise parallel zueinander angeordnete Platten als Formträger verwendet.in the With regard to the blowing stations used are different embodiments known. At blow stations, which are arranged on rotating transport wheels are, a book-like Aufklappbarkeit the mold carriers are frequently encountered. But it is also possible to use relatively displaceable or differently guided mold carriers. at fixed blow molding stations, which are particularly suitable for multiple cavities for container molding are typically arranged parallel to each other Plates as mold carriers used.
Eine detaillierte Beschreibung eines Recksystems einer Blasstation mit zugeordneter Reckstange erfolgt in der DE-OS 101 45 579. Die Reckstange ist hier als ein massiver Stab ausgebildet und die Blasluft wird der Blasform durch einen Anschlußkolben hindurch zugeführt, der einen größeren Innendurchmesser aufweist, als der Außendurchmesser der Reckstange beträgt. Hierdurch wird zwischen der Reckstange und einer Innenfläche des Anschlußkolbens ein Ringspalt bereitgestellt, durch den das unter Druck stehende Gas hindurchströmen kann.A detailed description of a stretching system of a blowing station with assigned stretch rod takes place in DE-OS 101 45 579. The stretch rod is here formed as a solid rod and the blown air is the blow mold through a connecting piston fed through, the larger inside diameter has, as the outer diameter the stretch rod is. As a result, between the stretch rod and an inner surface of the connecting piston provided an annular gap through which the pressurized Pass gas through it can.
Die
Verwendung einer hohlen Reckstange ist beispielsweise aus der DE-OS
28 14 952 bekannt. Ein Anschluß für das unter Druck
stehende Gas erfolgt hier über
ein einer Reckstangenkuppe abgewandtes Ende der rohrartig ausgebildeten
Reckstange. Eine Druckgaszuführung über das
Ende einer hohlen Reckstange wird darüber hinaus in der
Bei allen bekannten Blasgaszuführungen werden zur Steuerung der Blasgaszufuhr Ventile verwendet. Verbreitet ist insbesondere die Verwendung von elektromagnetisch ansteuerbaren Ventilen. Eingänge der Ventile sind über Verbindungsleitungen mit Druckgasversorgungen verbunden. Nach einem Öffnen der Ventile wird sowohl ein vom Ventil bis zum Vorformling bzw. zum Behälter verlaufender Strömungsweg als auch ein Innenraum des Vorformlings bzw. des Behälters mit dem Druckgas beaufschlagt. Dies bedeutet, daß zur Erreichung eines angestrebten Druckniveaus innerhalb des Vorformlings bzw. des Behälters so viel Druckgas durch das Ventil hindurchströmen muß, daß sowohl der Bereich des Strömungsweges als auch der entsprechende Innenraum des Vorformlings bzw. des Behälters mit einer ausreichenden Menge an Druckgas gefüllt ist. Das Volumen des Strömungsweges hat somit eine Verzögerung des angestrebten Druckaufbaues im Vorformling bzw. im Behälter zur Folge, da zusätzlich zur eigentlich benötigten Menge an Druckgas auch die zur Füllung des Strömungsweges erforderliche Menge an Druckgas durch das Ventil hindurchströmen muß. Neben der entsprechenden Prozeßverzögerung resultiert hieraus auch ein erhöhter Verbrauch an Druckgas mit entsprechend erhöhten Betriebskosten.In all known Blasgaszuführungen valves are used to control the Blasgaszufuhr. In particular, the use of electromagnetically controllable valves is widespread. Entrances of the valves are connected via connecting lines with pressurized gas supplies. After opening the valves, a flow path extending from the valve to the preform or to the container as well as an interior of the preform or the container with the pressurized gas acted upon. This means that in order to achieve a desired pressure level within the preform or container as much pressure gas must flow through the valve, that both the region of the flow path and the corresponding interior of the preform or the container is filled with a sufficient amount of pressurized gas , The volume of the flow path thus has a delay of the desired pressure build-up in the preform or in the container result, since in addition to the actual required amount of compressed gas and the required to fill the flow path amount of pressurized gas must flow through the valve. In addition to the corresponding process delay, this also results in an increased consumption of compressed gas with correspondingly increased operating costs.
Aufgabe der vorliegenden Erfindung ist es daher, ein Verfahren der einleitend genannten Art derart zu verbessern, daß sowohl auftretende Verzögerungszeiten als auch der Blasgasverbrauch verringert werden.task It is therefore an object of the present invention to provide a method of the invention mentioned type to improve such that both occurring delay times as well as the blast gas consumption are reduced.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß das Blasgas durch mindestens ein von einem relativ zur Blasform beweglich geführten Ventilträger gehaltertes Ventil zugeführt wird.These Task is inventively characterized solved, that this Blast gas by at least one of a relative to blow mold movable Guided valve carrier gehaltertes Valve supplied becomes.
Weitere Aufgabe der vorliegenden Erfindung ist es, eine Vorrichtung der einleitend genannten Art derart zu konstruieren, daß Totraumvoluminar im Bereich der Blasgaszuführung vermindert werden.Further Object of the present invention is to provide a device of Initially mentioned type such that Totraumvoluminar in the area of blast gas supply be reduced.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß das Anschlußelement ein relativ zur Blasform unbeweglich angeordnetes Basisteil und einen relativ zum Basisteil beweglich geführten Ventilträger aufweist und daß der Ventilträger mindestens ein Blasventil haltert.These Task is inventively characterized solved, that this connecting element a stationary relative to the blow mold base member and having a relative to the base part movably guided valve carrier and that the valve holds at least one blow valve.
Durch die Anordnung des Blasventils direkt am beweglich geführten Ventilträger ist es möglich, das Blasventil mit äußerst kurzem räumlichen Abstand zur Blasform sowie zum herzustellenden Behälter zu positionieren. Es werden hierdurch sehr kurze Strömungswege bereitgestellt, die zu einer Verminderung des Blasgasverbrauches sowie zu einer Verminderung von Verzögerungszeiten führen. Darüber hinaus ist der Blasvorgang exakter steuerbar.By the arrangement of the blow valve is directly on the movably guided valve carrier it possible that Blow valve with extremely short spatial Distance to the blow mold and the container to be produced position. It thereby becomes very short flow paths provided, which leads to a reduction of the blast gas consumption and lead to a reduction of delay times. Furthermore the blowing process is more precisely controllable.
Eine kompakte Ausführungsform wird insbesondere dadurch unterstützt, daß das Blasgas von einem seitlich am Ventilträger positionierten Ventil zugeführt wird.A compact embodiment is particularly supported by the fact that the blowing gas from one side on the valve carrier supplied positioned valve becomes.
Besonders kurze Strömungswege und kurze Verzögerungszeiten lassen sich dadurch erreichen, daß der Ventilträger mindestens teilweise zwischen einem relativ zur Blasform unbeweglichen Basisteil des Anschlußelementes und der Blasform positioniert wird.Especially short flow paths and short delay times can be achieved in that the valve carrier at least partially between a stationary relative to the blow mold base of the connecting element and the blow mold is positioned.
Zur Unterstützung einer Beweglichkeit des Ventilträgers wird vorgeschlagen, daß das Blasgas dem Ventil durch einen flexiblen Schlauch hindurch zugeführt wird.to support a mobility of the valve carrier It is suggested that the Blast gas is supplied to the valve through a flexible hose.
Eine einfache Steuerbarkeit wird dadurch unterstützt, daß die Blasgaszufuhr durch mindestens ein elektromagnetisch steuerbares Ventil zugeführt wird.A simple controllability is supported by the fact that the Blasgaszufuhr by at least one Electromagnetically controllable valve is supplied.
Eine exakt reproduzierbare Durchführung von Positionierbewegungen des Ventilträgers wird dadurch erreicht, daß der Ventilträger von einer Kurvensteuerung positioniert wird.A exactly reproducible execution of Positioning movements of the valve carrier is achieved by that the valve is positioned by a cam control.
Zu einer vereinfachten Ausführungsform trägt es bei, daß von der Kurvensteuerung lediglich eine Bewegungsrichtung des Ventilträgers vorgegeben wird.To a simplified embodiment, it helps that of the cam control only given a direction of movement of the valve carrier becomes.
Insbesondere ist daran gedacht, daß der Ventilträger von mindestens einer Feder in eine Grundpositionierung zurückgeführt wird.Especially is thought that the valve carrier of at least one spring is returned to a basic position.
Eine weitere Gewichtsreduzierung im Bereich des Ventilträgers läßt sich dadurch erreichen, daß mindestens eines der Ventile mit einem Pilotventil verbunden wird.A further weight reduction in the area of the valve carrier can be achieve that at least one of the valves is connected to a pilot valve.
Gemäß einer Ausführungsform ist vorgesehen, daß der Ventilträger in lotrechter Richtung von unten relativ zum Vorformling bewegt wird.According to one embodiment is provided that the valve moved in a vertical direction from below relative to the preform becomes.
Ebenfalls ist daran gedacht, daß der Ventilträger in lotrechter Richtung von oben relativ zum Vorformling bewegt wird.Also is thought that the valve is moved in the vertical direction from above relative to the preform.
Zur Vermeidung von Druckverlusten wird vorgeschlagen, daß der Ventilträger relativ zum Vorformling abgedichtet wird.to Prevention of pressure losses is suggested that the valve carrier relative is sealed to the preform.
Ebenfalls erweist es sich als zweckmäßig, daß die Reckstange relativ zum Ventilträger abgedichtet wird.Also it proves to be appropriate that the stretch rod relative to the valve carrier is sealed.
Eine relativ zueinander unabhängige Vorgabe von Bewegungsabläufen kann dadurch erfolgen, daß die Reckstange innerhalb des Ventilträgers verschieblich geführt wird.A relatively independent Specification of movements can be done by the Stretching rod is guided displaceably within the valve carrier.
Eine kompakte und mechanisch hochbelastbare Anordnung bei gleichzeitiger Bereitstellung einer hohen Zuverlässigkeit wird dadurch erreicht, daß der Ventilträger in einer axialen Richtung der Reckstange positioniert wird.A compact and mechanically highly resilient arrangement while providing high reliability is achieved in that the valve carrier in an axial direction of the stretch rod is positioned.
In den Zeichnungen sind Ausführungsbeispiele der Erfindung schematisch dargestellt. Es zeigen:In The drawings are exemplary embodiments of the invention shown schematically. Show it:
Der
prinzipielle Aufbau einer Vorrichtung zur Umformung von Vorformlingen
(
Die
Vorrichtung zur Formung des Behälters (
Zur
Ermöglichung
einer Druckluftzuleitung ist unterhalb des Transportdornes (
Eine
Reckung des Vorformlings (
Bei
der in
Nach
einem Schließen
der im Bereich von Trägern
(
Zur
Anpassung an unterschiedliche Formen eines Mündungsabschnittes (
Um
einen Vorformling (
Als thermoplastisches Material können unterschiedliche Kunststoffe verwendet werden. Einsatzfähig sind beispielsweise PET, PEN oder PP.When thermoplastic material can different plastics are used. Can be used for example PET, PEN or PP.
Die
Expansion des Vorformlings (
Aus
Zur
Ermöglichung
einer möglichst
dichten Anordnung des Übergaberades
(
Nach
einem fertigen Blasen der Behälter
(
In
der in
Das
in
Das
Basisteil (
Die
Federn (
Bei
der in
Zur
Unterstützung
einer verlustarmen Blasdruckzufuhr zum Vorformling (
Gemäß der in
Alternativ
zur Verwendung von elektrisch oder elektromagnetisch gesteuerten
Ventilen können aber
auch Ventile beliebig anderer Bauart eingesetzt werden. Insbesondere
ist auch daran gedacht, die unmittelbar am ventilträger (
Gemäß einem
typischen Funktionsablauf bei der in
Vorteilhaft
in der Ausführungsform
gemäß
Claims (30)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005020716A DE102005020716A1 (en) | 2005-04-12 | 2005-05-04 | Method and apparatus for blow molding containers |
EP06753166A EP1868791A1 (en) | 2005-04-12 | 2006-03-30 | Method and device for blow molding containers while using a displaceably guided valve support |
DE112006000800.5T DE112006000800B4 (en) | 2005-04-12 | 2006-03-30 | Process and device for blow molding containers using a movably guided valve carrier |
PCT/DE2006/000589 WO2006108382A1 (en) | 2005-04-12 | 2006-03-30 | Method and device for blow molding containers while using a displaceably guided valve support |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005017042 | 2005-04-12 | ||
DE102005017042.0 | 2005-04-12 | ||
DE102005020716A DE102005020716A1 (en) | 2005-04-12 | 2005-05-04 | Method and apparatus for blow molding containers |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102005020716A1 true DE102005020716A1 (en) | 2007-01-11 |
Family
ID=36480928
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102005020716A Withdrawn DE102005020716A1 (en) | 2005-04-12 | 2005-05-04 | Method and apparatus for blow molding containers |
DE112006000800.5T Active DE112006000800B4 (en) | 2005-04-12 | 2006-03-30 | Process and device for blow molding containers using a movably guided valve carrier |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE112006000800.5T Active DE112006000800B4 (en) | 2005-04-12 | 2006-03-30 | Process and device for blow molding containers using a movably guided valve carrier |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1868791A1 (en) |
DE (2) | DE102005020716A1 (en) |
WO (1) | WO2006108382A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008005311A1 (en) * | 2008-01-21 | 2009-07-23 | Armin Steinke | Container i.e. bottle, stretching-blow molding device, has drive device formed as force accumulator i.e. spring, that is stretchable by another drive device, and blow head fitted on opening of blank during release of blow head |
EP3009252A1 (en) * | 2014-10-15 | 2016-04-20 | SMC Corporation | Fluid pressure circuit and blow molding system |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008007351A1 (en) * | 2008-01-31 | 2009-08-06 | Khs Corpoplast Gmbh & Co. Kg | Method and apparatus for blow molding containers |
ATE518643T1 (en) * | 2008-02-05 | 2011-08-15 | Seitz Eugen Ag | DEVICE FOR BLOWING COMPRESSED AIR INTO A BLOW MOLD |
FR2974750B1 (en) * | 2011-05-03 | 2014-04-25 | Sidel Participations | VALVE CONTROL DEVICE FOR A BLOW MOLDING MOLDING INSTALLATION COMPRISING INDIVIDUALLY ACTUABLE VALVES |
DE102012010985A1 (en) * | 2012-06-02 | 2013-12-05 | Krones Ag | Hollow body manufacturing machine |
DE102013111950A1 (en) * | 2013-10-30 | 2015-04-30 | Krones Ag | Forming device for forming plastic preforms into plastic containers |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2348738A (en) | 1940-08-16 | 1944-05-16 | Owens Illinois Glass Co | Making hollow thermoplastic ware |
US3747625A (en) * | 1969-02-26 | 1973-07-24 | Monsanto Co | Method and apparatus for venting and releasing plastic articles from a blow mold |
IT1051689B (en) * | 1975-12-22 | 1981-05-20 | Plastic Metal Spa | BLOWING AND FILLING EQUIPMENT FOR FORMING MACHINES FILLING AND SEALING OR WELDING OF CONTAINERS IN THERMOPLASTIC MATERIAL |
JPS53125470A (en) | 1977-04-06 | 1978-11-01 | Du Pont | Production of thermoplastic resin aerosol container made by using molded preform |
SE448967B (en) | 1983-03-10 | 1987-03-30 | Petainer Sa | SET AND DEVICE FOR MANUFACTURING THERMOPLASTIC CONTAINERS |
DE4212583A1 (en) | 1992-04-15 | 1993-10-21 | Krupp Corpoplast Masch | Blow molding device |
DE19646365A1 (en) | 1996-11-09 | 1998-05-14 | Krupp Corpoplast Masch | Method and device for transferring moldings |
DE20018500U1 (en) * | 2000-10-28 | 2001-12-13 | Krones Ag | Blowing machine |
DE10145579A1 (en) | 2001-09-15 | 2003-07-03 | Sig Corpoplast Gmbh & Co Kg | Device for blow molding containers |
-
2005
- 2005-05-04 DE DE102005020716A patent/DE102005020716A1/en not_active Withdrawn
-
2006
- 2006-03-30 WO PCT/DE2006/000589 patent/WO2006108382A1/en not_active Application Discontinuation
- 2006-03-30 DE DE112006000800.5T patent/DE112006000800B4/en active Active
- 2006-03-30 EP EP06753166A patent/EP1868791A1/en not_active Ceased
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008005311A1 (en) * | 2008-01-21 | 2009-07-23 | Armin Steinke | Container i.e. bottle, stretching-blow molding device, has drive device formed as force accumulator i.e. spring, that is stretchable by another drive device, and blow head fitted on opening of blank during release of blow head |
EP3009252A1 (en) * | 2014-10-15 | 2016-04-20 | SMC Corporation | Fluid pressure circuit and blow molding system |
Also Published As
Publication number | Publication date |
---|---|
DE112006000800A5 (en) | 2008-01-10 |
DE112006000800B4 (en) | 2023-06-01 |
WO2006108382A1 (en) | 2006-10-19 |
EP1868791A1 (en) | 2007-12-26 |
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