WO2019025080A1 - Machine d'étirage-soufflage pourvue d'une isolation thermique - Google Patents

Machine d'étirage-soufflage pourvue d'une isolation thermique Download PDF

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Publication number
WO2019025080A1
WO2019025080A1 PCT/EP2018/066828 EP2018066828W WO2019025080A1 WO 2019025080 A1 WO2019025080 A1 WO 2019025080A1 EP 2018066828 W EP2018066828 W EP 2018066828W WO 2019025080 A1 WO2019025080 A1 WO 2019025080A1
Authority
WO
WIPO (PCT)
Prior art keywords
carrier
station
rotatable
forming
stations
Prior art date
Application number
PCT/EP2018/066828
Other languages
German (de)
English (en)
Inventor
Florian Geltinger
Harald Steinberger
Thomas Spitzer
Bernhard Sternkopf
Original Assignee
Krones 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 Krones Ag filed Critical Krones Ag
Publication of WO2019025080A1 publication Critical patent/WO2019025080A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • 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
    • B29C49/46—Component parts, details or accessories; Auxiliary operations characterised by using particular environment or blow fluids other than air
    • B29C2049/4673—Environments
    • B29C2049/4697—Clean room
    • 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
    • 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
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/46—Component parts, details or accessories; Auxiliary operations characterised by using particular environment or blow fluids other than air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7158—Bottles

Definitions

  • the present invention relates to an apparatus for forming plastic preforms into plastic containers.
  • the present invention relates to a blow molding machine, in particular a so-called stretch blow molding machine.
  • Such machines have been known from the prior art for a long time. These usually have a movable and in particular rotatable carrier, a so-called blowing wheel on which a plurality of forming stations is arranged.
  • these forming stations have blow mold carriers and blow molds which can be unfolded and folded and, in a folded state, form a cavity within which the plastic preforms can be formed by applying a flowable medium to the plastic containers.
  • blow molding machines are available for different power ranges. For the middle and upper power range, these blow molding machines are usually designed as rotary machines. In recent years, the station performance of these machines has continued to increase and thus inseparable was also an increase in the speed of the respective blower. These steadily increased speeds also lead to higher load of storage of this blowing wheel. The speeds are now so high that the storage in a continuous operation reaches a significant increase in temperature to more than 60 ° C.
  • the present invention is therefore based on the object to avoid positioning problems, especially when using high speeds of a blowing wheel. This object is achieved by the subject matters of the independent claims. Advantageous embodiments and further developments are the subject of the dependent claims.
  • a device for forming plastic preforms into plastic containers has a main carrier on which a (with respect to the main carrier) rotatable station carrier is arranged.
  • a plurality of forming stations for forming plastic preforms to plastic containers is arranged on this station carrier and further provided a storage device to rotatably support the rotatable station carrier relative to the main carrier.
  • the device has a thermal insulation device which at least partially insulates at least a portion of the transformation stations and / or the station support thermally with respect to the station support and / or other areas of the station support. It is therefore proposed that the heating occurring be blocked by means of thermal insulation and thus prevents certain areas of the station carrier or the conversion stations are excessively heated. In this way, it is also possible that at higher speeds of the blowing wheel or the station support nevertheless no excessive heating in sensitive areas of the station carrier is introduced.
  • the device for forming plastic preforms into plastic containers is preferably a blow molding machine.
  • the flowable medium is preferably under pressure.
  • the device has a blowing nozzle, which can be applied sealingly to an opening of the plastic preforms in order to expand the plastic preforms in such a way with liquid or gaseous medium.
  • a valve arrangement is preferably provided which controls the supply of the blowing air to the plastic preforms.
  • the blow molding machine is preferably a stretch blow molding machine, which means that the preforms are stretched in the longitudinal direction before and / or during the expansion by means of a stretching rod.
  • the blowing stations each have stretching rods which can be inserted into the plastic preforms and stretch the plastic preforms in their longitudinal direction.
  • the stretch rods preferably have an electric drive.
  • a plurality of blowing stations is arranged on a common movable carrier. This carrier is in particular a rotatable carrier.
  • the blowing stations each have a blow molding device, which preferably form a cavity, within which the plastic preforms are expandable to the plastic containers. These blow molding devices are preferably designed in several parts and have two blow mold halves and a bottom mold.
  • blow mold halves are detachably arranged on a mold carrier shell or on the blow mold carriers.
  • the blow mold carriers are pivotable relative to each other to open and close the blow molds.
  • the blow mold carrier has locking mechanisms in order to lock the mold halves against one another during the blowing process.
  • blow molding machine or the carrier and the blow mold arrangements are particularly preferably arranged within a clean room which delimits the blow molding machine from an unsterile environment.
  • Drive devices for the closure, locking and / or opening of the blow molds are preferably arranged outside of the clean room.
  • the blow molding devices are preferably transported within the clean room.
  • the clean room is preferably limited by several walls. Preference is given to the clean room thereby limited by at least one standing wall and a standing against this wall moving wall.
  • the clean room delimits the blow molds in particular from an unsterile environment.
  • the clean room is designed like a ring or torus around the blow molding stations or forming stations and / or the transport path of the plastic containers.
  • the insulating device may be a thermal insulator which is arranged, for example, between adjacent components.
  • the isolating device can also be a device which tempers and in particular cools a specific section, in particular of the station carrier, and thus enables the thermal insulation between the heating area of the station carrier and other areas.
  • an apparatus for forming plastic preforms to plastic containers on a main carrier on which a rotatable station carrier is arranged wherein at this rotatable station carrier a plurality of forming stations for forming plastic preforms is arranged in plastic containers and wherein a storage device provided is to rotatably support the rotatable station carrier relative to the main carrier.
  • the device here has a cooling device for cooling at least one component of the rotatable station carrier and / or at least one forming station, and this cooling device in turn has conducting means which emit a gaseous medium and / or liquid medium emerging from the forming station onto at least one component of the rotatable Carrier and / or at least one component of the forming station and / or at least one component of the storage device directs.
  • the guide means can also be the air outlets of the conversion stations, for example nozzles or the like, which are aligned such that the air exiting through these nozzles reaches the areas to be cooled
  • the forming stations each have two side member carriers, on which at least indirectly blow molding parts are arranged, these blow moldings forming a cavity within which plastic preforms are deformable to the plastic containers.
  • these conversion stations each have loading devices, which act on the plastic preforms with a flowable medium.
  • this flowable medium is air and in particular blowing air.
  • the loading device the plastic preforms directly with a liquid, in particular but not exclusively a beverage to be filled, applied to expand the plastic preforms through this liquid.
  • the conversion stations each have rod-like bodies, so-called stretching rods, which can be inserted into the interior of the plastic preforms in order to stretch them in their longitudinal direction.
  • the devices preferably have a valve block which controls the supply of the flowable medium into the plastic preforms.
  • this may also be a valve block which is suitable and intended to fill liquid into the plastic preforms so as to expand them.
  • the insulating device has a between the rotatable station carrier or a first region of the station carrier and less at least one forming station and / or a further region of the station carrier arranged insulating element, which causes the thermal insulation and / or thermal separation. It is also possible that this insulating element is arranged between a first region of the station carrier and a second region of the station carrier.
  • the insulating device has a plate-shaped body made of a thermally insulating material or at least one coolant channel. If a plate-shaped body is used, this can be arranged, for example, between a first region of the station carrier and a second region of the station carrier. In this way, this second area of the station carrier can be insulated from the first area and even with a high occurring heating of the first area there is no corresponding heating of the second area. It would also be possible that this plate-shaped insulator between the station carrier and the individual transformation stations is mounted in order to prevent excessive heating of the conversion stations. Also, at least one and preferably a plurality of coolant channels may be provided. In this case, for example, a closed coolant loop can be provided in a region of the station carrier.
  • the said insulating plate may be formed annularly or it may be provided a plurality of insulating elements.
  • the plate-shaped body is formed of a thermally insulating material, such as stainless steel.
  • the rotatable station carrier is rotatably mounted relative to the main carrier by means of a ball slewing.
  • rotary ball connectors are known per se from the prior art. These may have a plurality of rolling elements such as balls, which may extend as in an angular contact ball bearings on annular tracks or treads, for example, an inner ring. In this way, these rolling elements can absorb axial forces and tilting moments.
  • the entire camp is protected by seals against grease leakage and contamination.
  • the storage device has a bearing inner ring and a bearing outer ring.
  • these bearing inner rings and bearing outer rings also form running surfaces for a large number of rolling elements.
  • these rolling elements are balls.
  • the present invention is further directed to a method of forming plastic preforms into plastic containers.
  • plastic preforms are transferred to forming stations and reshaped by these forming stations by exposure to a flowable medium to the plastic containers.
  • a flowable medium, and the conversion stations are arranged on a station carrier which rotates relative to a stationary main carrier and which is rotatably mounted relative to this main carrier by means of a bearing means, wherein at least a portion of the forming stations or Storage device and / or the station carrier is cooled and / or thermally insulated.
  • this thermal insulation is achieved by a thermal insulation device comprising at least a portion of the transformation stations and / or a region of the station support and / or the storage device at least partially thermally relative to the station carrier and / or a further region of the station carrier and / or at least a portion of Forming stations isolated and / or the cooling is achieved by means of emerging from the forming stations flowable medium.
  • At least one region of the device is thermally insulated from another region or that at least one region of the machine is actively cooled by a flowable and in particular gaseous medium emerging from the transformation stations.
  • a higher temperature gradient can be achieved between the storage device and further components of the station carrier and / or the conversion stations than without the said measures, that is, without the cooling and / or insulation.
  • the said area of the station carrier and / or the conversion stations can be kept at a lower temperature than without the said measures.
  • Fig. 1 is a schematic representation of a device according to the invention
  • Fig. 2 is a detail view for illustrating the invention.
  • FIG. 1 shows a roughly schematic representation of a device 1 according to the invention.
  • a station carrier 4 is shown, which is in particular a blowing wheel. This is rotatably mounted with respect to a rotation axis Z.
  • a plurality of forming stations 6 is arranged. These forming stations 6 each have (not shown) side member support on which blow moldings can be attached. These side member carriers can be pivoted with the blow mold parts arranged thereon, for example by a pivoting operation, opened and closed. In a closed state, the plastic preforms with the gaseous Applied medium so as to be expanded to plastic containers and plastic bottles in particular can.
  • FIG. 2 shows a detail of the present invention.
  • the stationary main carrier 2 is shown on which the station carrier 4 is rotatably shown.
  • the reference numeral 8 denotes a rolling element, which is part of a storage device, which serves for the rotatable mounting of the station carrier 4.
  • This station carrier 4 has a first area 4a and a second area 4b.
  • the reference numeral 22 denotes a thermal separating element, which is arranged between the area 4a of the station carrier and the area 4b of the station carrier. In this way, the high heating, which occurs in the storage device 8 and is also transmitted to the area 4a, can be prevented from wandering into the area 4b.
  • a cooling channel 16 is also shown in the region 4b, which serves to cool this region 4b.
  • the plate-shaped element 22 or the insulating element 22 and the cooling channel 16 can be provided.
  • the reference numeral 18 denotes a further region of the station carrier, which may also be thermally insulated by means of an insulating element 22.
  • the conversion stations 6 are shown only schematically. By virtue of the thermal insulation shown here, it is achieved, as mentioned above, that the areas 4a of the station carriers, in particular, are not excessively heated and, as a result, thermally induced misalignments or mispositioning can not occur.

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

Abstract

L'invention concerne un dispositif (1) pour façonner des préformes en plastique en récipients en plastique, présentant un support principal (2), sur lequel est disposé un support de postes (4) rotatif, une pluralité de postes de façonnage (6), destinés à façonner des préformes en plastique en récipients en plastique, étant agencée sur ce support de postes (4) rotatif, et présentant un dispositif de logement pour loger le support de postes (4) rotatif de manière rotative par rapport au support principal (2). Selon l'invention, le dispositif présente un dispositif d'isolation thermique, qui isole au moins en partie thermiquement au moins une partie des postes de façonnage (6) et/ou une zone (4b) du support de postes (4) par rapport à au moins une autre zone (4a) du support de postes (4) rotatif.
PCT/EP2018/066828 2017-08-03 2018-06-22 Machine d'étirage-soufflage pourvue d'une isolation thermique WO2019025080A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017117683.7A DE102017117683A1 (de) 2017-08-03 2017-08-03 Streckblasmaschine mit thermischer Isolierung
DE102017117683.7 2017-08-03

Publications (1)

Publication Number Publication Date
WO2019025080A1 true WO2019025080A1 (fr) 2019-02-07

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ID=62748981

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/066828 WO2019025080A1 (fr) 2017-08-03 2018-06-22 Machine d'étirage-soufflage pourvue d'une isolation thermique

Country Status (2)

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DE (1) DE102017117683A1 (fr)
WO (1) WO2019025080A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022119717A1 (de) 2022-08-05 2024-02-08 Krones Aktiengesellschaft Vorrichtung und Verfahren zum Umformen von Kunststoffvorformlingen zu Kunststoffbehältnissen mit thermisch entkoppeltem Reinraum
EP4339119A3 (fr) * 2022-08-25 2024-04-24 KRONES Aktiengesellschaft Matériau fibreux pour la fabrication d'un récipient, procédé de fabrication d'un récipient utilisant le matériau fibreux et récipient comprenant le matériau fibreux

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2495089A1 (fr) * 2011-03-04 2012-09-05 Krones AG Machine de formage par soufflage dotée d'une chambre stérile chauffée et procédé
FR2982789A1 (fr) * 2011-11-22 2013-05-24 Sidel Participations Dispositif d'isolation thermique pour moule, moule equipe d'un tel dispositif et installation comprenant au moins un tel moule.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010028253A1 (de) * 2010-04-27 2011-10-27 Krones Ag Blasmaschine
DE102010026788B4 (de) * 2010-07-09 2019-05-29 Krones Aktiengesellschaft Vorrichtung und Verfahren zur Luftkühlung einer Lagereinrichtung von Blasmaschinen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2495089A1 (fr) * 2011-03-04 2012-09-05 Krones AG Machine de formage par soufflage dotée d'une chambre stérile chauffée et procédé
FR2982789A1 (fr) * 2011-11-22 2013-05-24 Sidel Participations Dispositif d'isolation thermique pour moule, moule equipe d'un tel dispositif et installation comprenant au moins un tel moule.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022119717A1 (de) 2022-08-05 2024-02-08 Krones Aktiengesellschaft Vorrichtung und Verfahren zum Umformen von Kunststoffvorformlingen zu Kunststoffbehältnissen mit thermisch entkoppeltem Reinraum
EP4339119A3 (fr) * 2022-08-25 2024-04-24 KRONES Aktiengesellschaft Matériau fibreux pour la fabrication d'un récipient, procédé de fabrication d'un récipient utilisant le matériau fibreux et récipient comprenant le matériau fibreux

Also Published As

Publication number Publication date
DE102017117683A1 (de) 2019-02-07

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