EP1868791A1 - Verfahren und vorrichtung zur blasformung von behältern unter verwendung eines beweglich geführten ventilträgers - Google Patents
Verfahren und vorrichtung zur blasformung von behältern unter verwendung eines beweglich geführten ventilträgersInfo
- Publication number
- EP1868791A1 EP1868791A1 EP06753166A EP06753166A EP1868791A1 EP 1868791 A1 EP1868791 A1 EP 1868791A1 EP 06753166 A EP06753166 A EP 06753166A EP 06753166 A EP06753166 A EP 06753166A EP 1868791 A1 EP1868791 A1 EP 1868791A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- valve carrier
- blow
- carrier
- relative
- 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
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000000071 blow moulding Methods 0.000 title claims description 16
- 238000007664 blowing Methods 0.000 claims abstract description 54
- 238000000465 moulding Methods 0.000 claims description 3
- 230000003750 conditioning effect Effects 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 13
- 238000001816 cooling Methods 0.000 description 7
- 238000012546 transfer Methods 0.000 description 7
- 239000000969 carrier Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 description 4
- 239000005020 polyethylene terephthalate Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 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
- 239000007787 solid Substances 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 239000012815 thermoplastic material Substances 0.000 description 2
- FYBFDIIAPRHIQS-JRSBLEPXSA-N Tiaprost Chemical compound C(\[C@@H]1[C@H]([C@@H](O)C[C@H]1O)C\C=C/CCCC(O)=O)=C/C(O)COC=1C=CSC=1 FYBFDIIAPRHIQS-JRSBLEPXSA-N 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 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
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000005068 transpiration Effects 0.000 description 1
Classifications
-
- 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
Definitions
- the invention relates to a method for blow molding containers in which a preform is converted into the container after thermal conditioning within a blow mold by blowing pressure and in which a blowing gas is introduced through a connecting element into an interior space of the preform.
- the invention further relates to an apparatus for blow molding containers having at least one blow station with a blower, and in which a flow path for a blown gas for blow molding the container through a connecting member extends therethrough.
- preforms made of a thermoplastic material for example preforms made of PET (polyethylene terephthalate) are fed to different processing stations within a blow molding machine.
- a blow molding machine of this type has a heating device and a blowing device, in the region of which the previously tempered preform is expanded by biaxial orientation to form a container.
- the expansion takes place by means of compressed air, which is introduced into the preform to be expanded.
- the procedural sequence in such an expansion of the preform is explained in DE-OS 43 40 291.
- the introductory mentioned introduction of the pressurized gas also includes the introduction of compressed gas into the developing container bubble and the introduction of compressed gas into the preform at the beginning of the blowing process.
- the preforms as well as the blown containers can be transported by means of different handling devices.
- the use of transport thorns, onto which the preforms are attached, has proven to be useful.
- the preforms can also be handled with other support devices.
- the use of gripping tongs for handling preforms and the use of spreaders which can be inserted into an opening area of the preform for mounting are likewise among the available constructions.
- blow stations which are arranged on rotating transport wheels, a book-like Aufklappbarkeit the mold carrier is often-meet. But it is also possible to use relative to each other ver-displaceable or differently guided mold carriers.
- fixed blowing stations which are particularly suitable for receiving a plurality of cavities for container molding, typically plates arranged parallel to one another are used as mold carriers.
- the stretching rod is designed here as a solid rod and the blowing air is supplied to the blow mold through a connecting piston which has a larger internal diameter than the outer diameter of the stretch rod is. As a result, between the stretch rod and an inner surface of the an annular gap provided. through which the pressurized gas can flow.
- the volume of the flow path thus results in a delay of the desired pressure build-up in the preform or in the container, since ⁇ in addition to the actually required amount of compressed gas, the amount of compressed gas required to fill the flow path through the valve must flow through.
- Object of the present invention is therefore a method of the initially mentioned. To improve the type such that both occurring delay times and the consumption of blowing gas are reduced.
- blowing gas is supplied by at least one of a fixed relative to Blasfor ⁇ i movably guided valve carrier valve.
- a further object of the present invention is to design a device of the aforementioned type in such a way that dead space volumes are reduced in the area of the blown gas feed.
- the connecting element has a relative to the blow mold immovably arranged base member and a movable relative to the base member guided valve carrier and that, the valve carrier at least one blow valve hal- tert.
- blow valve directly on the movably guided valve carrier, it is possible to position the blow valve with extremely short spatial distance to the blow mold and the container to be produced. 1 Very short flow paths are thereby provided, which lead to a reduction in the consumption of blowing gas and to a reduction in delay times. In addition, the blowing process is more precisely controlled.
- a compact embodiment is particularly supported by the fact that the blowing gas is supplied from a laterally positioned on the valve carrier valve.
- valve carrier is at least partially positioned between a stationary relative to the blow mold base part of the connecting element and the blow mold.
- the blowing gas is supplied to the valve through a flexible hose.
- a simple controllability is supported by the fact that the Blasgaszuzen is supplied by at least one electromagnetically controllable valve.
- valve carrier is positioned by a cam control. , • ,
- valve carrier is returned by at least one spring in a basic positioning.
- a further reduction in weight in the region of the valve carrier can be achieved in that at least one of the valves is connected to a pilot valve. According to one embodiment it is provided that the valve carrier is moved in the vertical direction from below relative to the preform.
- valve carrier is moved in a vertical direction from above relative to the preform.
- valve carrier is sealed relative to the preform.
- a relatively independent specification of movements can take place in that the stretching rod is guided displaceably within the valve carrier.
- FIG. 1 is a perspective view of a blow molding station for the production of containers from preforms
- FIG. 2 shows a longitudinal section through a blow mold, in which a preform is stretched and expanded
- 3 shows a sketch to illustrate a basic structure of a device for blow-molding containers
- Fig. 5 is a side view of a blowing station, in which a stretch rod is posi-tioned by a Reckstangenpronounced and
- FIG. 6 shows a longitudinal section through a connecting piston for the supply of blowing gas, in which the blow valves are arranged in the region of a movable part of the connecting element as well as in the immediate vicinity of the blow molds.
- FIG. 1 The basic structure of a device for forming preforms (1) in container (2) is shown in FIG. 1 and in FIG. 2. , ',
- the device for forming the container (2) consists essentially of a blowing station (3) which is provided with a blow-mold (4) into which a preform (1) can be inserted.
- the preform (1) may be an injection-molded part of polyethylene terephthalate.
- the blow mold (4) consists of mold halves (5, 6) and a bottom part (7) which can be positioned by a lifting device (8).
- the preform (1) may be maintained in the range of the blowing station (3) by a transport mandrel (9), "passes through, together with the preform (1) stations, a plurality of treatment within the device. It is but also possible to use the preform (1) example, via pliers or other handling means directly into the blow mold (4).
- a compressed air supply line below the transport mandrel (9) a connecting piston (10) is arranged, which feeds the preform (1) compressed air and at the same time makes a seal relative to the transport mandrel (9).
- a connecting piston (10) is arranged, which feeds the preform (1) compressed air and at the same time makes a seal relative to the transport mandrel (9).
- a stretching of the preform (1) takes place in this embodiment by means of a stretching rod (11), which is positioned by a cylinder (12).
- a mechanical positioning of the stretching rod (11) is carried out via curve segments, which are acted upon by Abgriffrollen.
- the use of Kurvensegme ⁇ ten is particularly useful when a plurality of blowing stations (3) are arranged on a rotating blowing wheel
- the stretching system is designed such that a tandem arrangement of two cylinders (12) is provided. From a primary cylinder (13), the stretching rod (11) is first moved into the region of a bottom (14) of the preform (1) before the beginning of the actual stretching process.
- the primary cylinder (13) with extended stretching rod together with a carriage (15) carrying the primary cylinder (13) is posi-tioned by a secondary cylinder (16) or via a cam control.
- the secondary cylinder (16) in such a way that it is controlled by a guide roller.
- Ie (17) which slides along a curved path during the execution of the stretching process, a current stretching position is specified.
- the guide roller (17) is pressed against the guideway by the secondary cylinder (16).
- the carriage (15) slides along two guide elements (18).
- Fig. 2 shows in addition to the 'blown container (2) and dashed lines drawn the preform 1 (1) and schematically a developing container bladder (23).
- Fig. 3 shows the basic structure of a blow molding machine, with a heating section, (24) and a rotating blowing wheel. (25) is provided.
- the preforms (1) are transported by upper gear wheels (27, 28, 29) into the region of the heating path (24).
- heating radiator (30) and blower (31) are ange-. arranges to temper the preforms (l). After sufficient tempering of the preforms (1), they are transferred to the blowing wheel (25), in the region of which the blowing stations (3) are arranged.
- the finished blow-molded container (2) are fed by additional transfer wheels of a Ausgäbeh '(32).
- thermoplastic material different plastics can be used.
- PET, PEN or PP can be used. , ,.
- the expansion of the preform (1) during the orientation process takes place by means of compressed air supply.
- the compressed air feed is in a pre-blow phase in which gas, for example compressed air, is supplied at a low pressure level and subdivided into a subsequent main blow phase in which gas at a higher pressure level is supplied.
- gas for example compressed air
- main blow phase in which gas at a higher pressure level is supplied.
- compressed air is typically used at a pressure in the range of 10 bar to 25 bar, and during the main blowing phase compressed air is supplied at a pressure in the interval of 25 bar to 40 bar.
- the fans (31) introduce here cooling air into the area of cooling air ducts (39), which in each case the opposed radiant heaters (30) opposite and via discharge openings, the cooling air submit.
- a flow direction for the cooling air is realized substantially transversely to a transpiration direction of the preforming rings (1).
- the cooling air channels (39) can in the area of the radiant heaters (30) opposite surfaces reflectors. provide for the heating radiation, it is also possible to realize via the discharged cooling air and a cooling of the radiant heater (30).
- FIG. 5 shows a depiction of the blowing station (3) with respect to the illustration in FIG. T, in a viewing direction from the front.
- the 1 stretching rod (11) support the stretching rod of a supported (41) ,, composed of a support base (40) and a management over a Kupplungsele- (42) to the support base (40 ) connected roller carrier (43) is formed.
- the roller carrier (43) holds the guide roller (17), which serves for ' positioning of the stretching system.
- the guide roller (17) is guided along a curved path, not shown. It is realized here a complete mechanical control of the stretching process.
- the coupling element (42) illustrated in FIG. 5 can also be used in the embodiment according to FIG. 1 to enable a complete mechanical decoupling of the cylinders (12) from each other or from a support element for the guide roller (17). be used.
- Fig. 5 illustrates a locked state of the coupling element (42), in which the support base (40) and the roller carrier (43) with each other. are connected by the coupling element (42). There is thus a rigid mechanical coupling, which leads to that a positioning of the " guide roller (17) directly and directly in a positioning of the stretch rod
- (11) contributes to a high product quality as well as to a high uniformity of the manufactured containers
- Fig. 5 also shows the arrangement of a pneumatic block (46) for Blastikmakers the blow station (3).
- the pneumatic block (46) is equipped with high-pressure valves (47) which can be connected via terminals (48) to one or more pressure supplies. After a blow-molding of the container (2) is in. An environment to be discharged blast air via the pneumatic block (46) next to a silencer (49). supplied. ,
- Fig. 6 shows an embodiment in which for supplying blown air, a connecting element (50) in the region of the blowing station (3) is arranged, consisting essentially of a relative to the blow mold (4) immovably arranged base member (51) and a relative to the base part (51) movably guided valve carrier (52) is formed.
- the valve carrier (52) extends ' at least partially between the base part (51) and the blow mold (4).
- the valve carrier (52) is guided with a carrier shaft (53) in a recess (54) of the base part (51).
- An exact guidance of the support shaft (53) in the Ausneh ⁇ iung (54) is supported by bearings ' (55, 56).
- the base part (51) is bolted in the embodiment shown in Fig. 6 with a support structure (57) which may be formed as part of the blowing wheel (25).
- connection elements (50) according to FIG. 6 is also possible with stationary blowing stations.
- the base part (51) and the valve carrier (52) can be coupled together by springs (58, 59).
- the springs (58, 59) can be realized both as compression springs and as tension springs. By the springs (58, 59) is achieved that only an active positioning movement for the valve carrier (52) must be specified and that after completion of a Beautschung with a force of the valve carrier (52) automatically returns to a basic position.
- the basic positioning can represent both a positioning of the valve carrier (52) as shown in FIG. 6 and a raised positioning of the valve carrier (52) ,
- the springs (58, 59) can in recesses (60, 61) of the base part (51) and. the valve carrier (52) are positioned. This makes it possible, despite the use of the springs. (58, 59) a dense arrangement of the Bäsiserss. (51) and the valve carrier (52) pretend. '' ,
- a blow molding of the preforms (1) in container (2) with the mouth sections in the vertical direction is oriented downwards.
- the arrangement can also be rotated by 180 ° with respect to the illustration in FIG can be used so that the preforms (1) with ili- ren mouth sections in a vertical direction upwards in the container (2) are transformed.
- Fig. 6 shows an embodiment of the connecting element '(50) such that blown air valves (63, 64)', a Blas Kunststoff Weg- guide valve (65) and a vent valve (66) directly on the.
- Ventilyes (52) are arranged and can be positioned together with this .
- An interior (67) of the valve carrier (52) is connected via connecting channels (68, 69, 70, 71) to the respective valves (63, 64, 65, 66).
- a positioning of the valve carrier (52) can be controlled by cam so that a with the valve carrier (52) ver-connected cam roller (72) along a control cam (73) is guided.
- the blown air valve (63) is connected to a low pressure supply (74), the blown air valve (64) is connected to a high pressure supply (75).
- the blow-by air return valve (65) is connected to a return system (76) and the vent valve (66) is connected to a muffler (77).
- the' valve carrier (52) is provided with a seal (78) in the region of its extension facing the blow mold (4).
- the seal (78) can be designed as a sealing ring, which partially surrounds a nozzle (79) which can be inserted into the mouth region of the preform (1).
- the stretch rod (11) via a seal (80) is sealed relative to the valve carrier (52).
- a guide of the stretching rod (11) is supported by a bearing (81) arranged in the region of the valve carrier (52).
- the valves (63, 64, 65, 66) are designed as electrically controllable • valves. In particular, it is intended to be realized as electromagnetically controllable valves.
- valve disks (82) are shown in FIG. 6, which are guided by connecting elements (83) in the region of control coils (84).
- valves of any type can be used.
- valves arranged directly on the valve carrier (52) with pilot valves arranged at a distance relative to these.
- the blowing air valve first opens, LI (63) for supplying a lower blowing pressure and after closing the blowing valve (63) opens the blowing valve (64) to supply the higher one Blowing pressure.
- the blast air recirculation valve (65) opens first, and after closing the valve, the vent valve (66) opens.
- valve carrier (52) is then returned to its basic position and the blow mold (4) opens to remove the finished blown container (2) can.
- Advantageous in the embodiment according to FIG. 6 is in particular the axial positioning of the valve carrier (52) along a longitudinal axis of the stretch rod (11).
- the preform (1), the valve carrier (52) and the base part (51) each extend along the longitudinal axis of the stretch rod (11).
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005017042 | 2005-04-12 | ||
DE102005020716A DE102005020716A1 (de) | 2005-04-12 | 2005-05-04 | Verfahren und Vorrichtung zur Blasformung von Behältern |
PCT/DE2006/000589 WO2006108382A1 (de) | 2005-04-12 | 2006-03-30 | Verfahren und vorrichtung zur blasformung von behältern unter verwendung eines beweglich geführten ventilträgers |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1868791A1 true EP1868791A1 (de) | 2007-12-26 |
Family
ID=36480928
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06753166A Ceased EP1868791A1 (de) | 2005-04-12 | 2006-03-30 | Verfahren und vorrichtung zur blasformung von behältern unter verwendung eines beweglich geführten ventilträgers |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1868791A1 (de) |
DE (2) | DE102005020716A1 (de) |
WO (1) | WO2006108382A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008005311A1 (de) * | 2008-01-21 | 2009-07-23 | Armin Steinke | Vorrichtung zur Streckblasformung eines Behälters |
DE102008007351A1 (de) * | 2008-01-31 | 2009-08-06 | Khs Corpoplast Gmbh & Co. Kg | Verfahren und Vorrichtung zur Blasformung von Behältern |
ATE518643T1 (de) * | 2008-02-05 | 2011-08-15 | Seitz Eugen Ag | Vorrichtung zum einblasen von druckluft in eine blasform |
FR2974750B1 (fr) * | 2011-05-03 | 2014-04-25 | Sidel Participations | Dispositif commande de robinetterie pour une installation de moulage de recipients par soufflage comportant des vannes actionnables individuellement |
DE102012010985A1 (de) * | 2012-06-02 | 2013-12-05 | Krones Ag | Hohlkörperherstellungsmaschine |
DE102013111950A1 (de) * | 2013-10-30 | 2015-04-30 | Krones Ag | Umformvorrichtung zum Umformen von Kunststoffvorformlingen zu Kunststoffbehältnissen |
JP6160927B2 (ja) * | 2014-10-15 | 2017-07-12 | Smc株式会社 | 流体圧回路及びブロー成形システム |
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 (it) * | 1975-12-22 | 1981-05-20 | Plastic Metal Spa | Apparecchiatura di soffiaggio e di riempimento per macchine di formatura riempimento e sigillatura o saldatura di contenitori in materiale termoplastico |
JPS53125470A (en) | 1977-04-06 | 1978-11-01 | Du Pont | Production of thermoplastic resin aerosol container made by using molded preform |
SE448967B (sv) | 1983-03-10 | 1987-03-30 | Petainer Sa | Sett och anordning for tillverkning av termoplastbehallare |
DE4212583A1 (de) | 1992-04-15 | 1993-10-21 | Krupp Corpoplast Masch | Vorrichtung zur Blasformung |
DE19646365A1 (de) | 1996-11-09 | 1998-05-14 | Krupp Corpoplast Masch | Verfahren und Vorrichtung zur Übergabe von Formlingen |
DE20018500U1 (de) | 2000-10-28 | 2001-12-13 | Krones Ag | Blasmaschine |
DE10145579A1 (de) | 2001-09-15 | 2003-07-03 | Sig Corpoplast Gmbh & Co Kg | Vorrichtung zur Blasformung von Behältern |
-
2005
- 2005-05-04 DE DE102005020716A patent/DE102005020716A1/de not_active Withdrawn
-
2006
- 2006-03-30 DE DE112006000800.5T patent/DE112006000800B4/de active Active
- 2006-03-30 WO PCT/DE2006/000589 patent/WO2006108382A1/de not_active Application Discontinuation
- 2006-03-30 EP EP06753166A patent/EP1868791A1/de not_active Ceased
Non-Patent Citations (1)
Title |
---|
See references of WO2006108382A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102005020716A1 (de) | 2007-01-11 |
DE112006000800B4 (de) | 2023-06-01 |
DE112006000800A5 (de) | 2008-01-10 |
WO2006108382A1 (de) | 2006-10-19 |
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