EP4532172A1 - Transportdorn, transportdornanordnung sowie heizvorrichtung - Google Patents
Transportdorn, transportdornanordnung sowie heizvorrichtungInfo
- Publication number
- EP4532172A1 EP4532172A1 EP23725702.7A EP23725702A EP4532172A1 EP 4532172 A1 EP4532172 A1 EP 4532172A1 EP 23725702 A EP23725702 A EP 23725702A EP 4532172 A1 EP4532172 A1 EP 4532172A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- transport
- transport mandrel
- mandrel according
- section
- head section
- 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.)
- Pending
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
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/4205—Handling means, e.g. transfer, loading or discharging means
- B29C49/42073—Grippers
- B29C49/42085—Grippers holding inside the neck
-
- 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
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/4205—Handling means, e.g. transfer, loading or discharging 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
- B29C49/64—Heating or cooling preforms, parisons or blown articles
- B29C49/68—Ovens specially adapted for heating preforms or parisons
-
- 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
- B29K2067/003—PET, i.e. poylethylene terephthalate
-
- 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 a transport mandrel for a heating device in a blow molding machine with a head section adjacent to a shaft section, the head section having at least one holding surface for clamping containers.
- the invention relates in particular to blow molding machines in the beverage industry.
- the blow molding machines are used to form beverage containers, in particular beverage bottles, from preforms, which are usually also referred to as preforms.
- preforms which are usually also referred to as preforms.
- these preforms are made in particular from a plastic, for example.
- PET polyethylene terephthalate
- the preforms are usually heated to a predetermined temperature, which enables plastic deformation.
- the preforms are guided along a transport route in the heating device and are thereby heated via heating elements.
- the containers are arranged on appropriate transport mandrels, which clamp the containers in place. After passing through the transport route, the containers are then removed from the transport mandrels, for example via grippers, and fed to the blow molding machine.
- Both active clamping elements and passive clamping elements can be provided for the clamping arrangements, with passive clamping elements having the advantage that no separate drive has to be provided, which enables the container or preform to be clamped on the head section of the transport mandrel.
- Such a principle has fundamentally proven itself in its functionality. However, it is precisely the head section of the transport mandrels that is subject to contamination and contamination during operation. For example, rubber abrasion can settle in the individual recesses over time and thereby contaminate the containers. At the same time, it is often desirable to produce the containers aseptically, so that in addition to heating, sterilization with sterilization media, in particular hydrogen peroxide (H2O2), also takes place.
- sterilization media in particular hydrogen peroxide (H2O2)
- H2O2 hydrogen peroxide
- the rubber rings in particular have only a low resistance to a large number of cleaning and sterilization media, so that the transport domes must be cleaned at predefined intervals and, at the same time, the maintenance of individual components is very complex.
- the object of the invention is to provide a transport dome which is easier to clean in terms of its design and is characterized by a lower-maintenance design.
- the invention also relates to a transport dome arrangement according to claim 14 and a heating device according to claim 15.
- the head section has a continuously closed surface.
- the surface is therefore designed without any type of openings, so that the holding surfaces are also formed by the circumferentially closed surface.
- the closed surface prevents dirt, especially small particles, from penetrating the head section of the transport dome. In such a case, cleaning is only possible under very difficult conditions and with complex measures.
- at least the head section of the transport dome usually has to be dismantled in order to enable complete cleaning. Due to the closed surface, a particularly advantageous transport dome is created, particularly from a hygienic point of view, which can be cleaned using simple means.
- the circumferentially closed surface is constructed using the same material. Accordingly, the entire surrounding surface is made of just one material.
- the material of the closed surface can be formed, for example, from a metal or from a plastic, in particular an elastomer.
- a further development of the invention provides that the at least one holding surface is formed on a projecting section of the circumferentially closed surface.
- the projecting sections form discrete points of the head section, which, in combination with a certain elasticity, retract a little when a container is inserted and at the same time exert sufficient clamping force on the inner walls of the container in order to hold the corresponding container on the transport dome during transport .
- the clamping force is transmitted via the holding surfaces, which form an external surface of the projecting section.
- the projecting section is surrounded by a groove formed in the circumferentially closed surface.
- a groove formed in the circumferentially closed surface.
- the projecting section is surrounded at least in sections by a spring section, which is designed with a different, in particular smaller, wall thickness compared to the projecting section. This also makes it possible to set a certain elasticity and thus clamping force.
- the groove preferably has a width of less than 15 mm, preferably less than 10 mm. In particular, the width of the groove is between 3 and 15 mm, particularly preferably between 5 and 10 mm.
- the depth of the groove is preferably less than 10 mm, preferably less than 8 mm. In particular, the depth of the groove is between 1 and 10 mm, preferably between 3 and 8 mm.
- the circumferentially closed surface is formed on a hollow body.
- the circumferentially closed surface is formed by the outer surface on a sleeve, which at least partially surrounds an inner core of the head section. Accordingly, it may be sufficient if the sleeve only encloses a section which is responsible for ensuring that the sleeve can be held on the remaining components of the transport mandrel.
- the head section is primarily a hollow body, so that the elasticity of such a hollow body can be used in a preferred manner, especially when incorporating projecting sections.
- it is preferably a sleeve which is formed from a metal sheet. The thickness is preferably between 0.5 and 3 mm.
- a further embodiment also provides that the sleeve is made of a plastic, in particular an elastomer.
- a plastic in particular an elastomer.
- the sleeve encloses the core at least in the area of the projecting sections, in which case the elasticity of the holding surfaces is based primarily on the elasticity of the material.
- the elasticity of the holding surfaces is based primarily on the elasticity of the material.
- no projecting sections are provided in the continuously closed surface. In such a case, clamping on the holding surfaces would rely solely on the elasticity of the material.
- a further development of the invention further provides that a driven actuating element is assigned to the at least one holding surface.
- a driven actuating element is assigned to the at least one holding surface.
- the head section has at least two, preferably at least three, holding surfaces.
- a particularly preferred embodiment provides a total of four holding surfaces.
- the holding surfaces are preferably arranged equidistantly in the circumferential direction. According to such an embodiment, it can further be provided that each of the holding surfaces is formed on a projecting section.
- the design of the head sections is not limited to a specific geometric shape, a preferred embodiment provides that the head section and also the continuously closed surface are circular.
- the invention furthermore relates to a transport dome arrangement according to claim 14 with a transport mandrel and a container, in particular a preform made of plastic, which is arranged in a clamping manner on the head section of the transport mandrel.
- the clamping takes place at a mouth section of the preform, which is usually formed on the surrounding walls with an external thread for receiving a closure cap. Below the external thread there is a locking ring, which usually protrudes from the external thread.
- the preforms are therefore already pre-formed and do not require any further processing within a blow molding machine, especially in the mouth section.
- the head section is then inserted into the mouth section and clamps the preform to the inner walls of the mouth section.
- a heating device for a blow molding machine is also the subject of the invention with a plurality of transport domes according to the invention arranged continuously along a transport route and at least one heating element assigned to the transport route.
- Such heating devices are basically known from the prior art, with the transmandrels connecting directly to one another along the transport route and the containers or preforms to at least one Guide the heating element along.
- the containers are continuously heated and removed via a gripper at the end of the transport route.
- the transport domes are set up to be movable at least in sections along the transport route.
- the transport domes and thus also the containers arranged on the transport domes can be guided from an operating position into a removal position, so that the grippers can easily grip the containers without being hindered by the adjacent containers or transport domes.
- Fig. 1 shows a transport dome according to the prior art
- Fig. 2 shows the head section of the transport dome according to Fig. 1
- Fig. 3 shows the head section of a transport dome according to the invention in an isometric view
- Fig. 4 shows the transport dome according to Fig. 3 in a sectional view
- Fig. 1 shows the basic structure of a transport dome from the prior art.
- a transport dome is usually z. B. used in a heating device for a blow molding machine and has a shaft section 1 and a head section 2 adjacent to the shaft section 1.
- the transport dome can be fastened to the heating device in a connection section 3 opposite the head section 2, with the transport dome being fastened via a spring 4.
- the exact design of the head section 2 is particularly clear when viewed in FIG. 2. Accordingly, clamping elements 5 are provided, which protrude radially outwards with holding surfaces 6.
- the holding surfaces 6 With the help of the holding surfaces 6, it is now possible to press radially on the inside of the walls of a container, for example. B. to act on a preform in order to thereby effect a clamping attachment of the container to the transport dome.
- the clamping elements 5 act on two rubber rings 7 which are spaced apart from one another in the axial direction and which accordingly have a certain elasticity, so that the clamping elements 5 with the holding surfaces 6 can deflect a little in the radial direction when inserted into the container, with a clamping force acting on them at the same time Container is acted upon.
- FIGS. 3 and 4 show a head section 2 according to the invention, the head section 2 having a continuously closed surface 8, with the holding surfaces 6 also being formed as part of the continuously closed surface 8.
- Such an embodiment according to the invention therefore does not provide any openings in the surface 8, so that cleaning is much easier.
- the circumferentially closed surface is formed on a sleeve 9 made of thin-walled sheet metal, with projecting sections 10 being stamped into the sleeve 9 and the holding surfaces 6 in turn being formed on the radially projecting sections 10.
- the projecting sections 10 are surrounded by a groove 11.
- the projecting section 10 and the holding surfaces 6 are given sufficient elasticity due to the structural design made of a material-uniform thin-walled metal sheet, via which a sufficient clamping force can be applied to the containers, analogous to the previously known embodiment according to FIG.
- FIGS. 3 and 4 Analogous to the embodiment from FIG. 2, a total of four holding surfaces 6 are also provided according to FIGS. 3 and 4, each of which is formed on a projecting section 6.
- the head section 2 shown in FIGS. 3 and 4 is merely an exemplary embodiment.
- the sleeve 9 is made of a plastic, for example.
- B. is formed from an elastomer and rests on an internal core.
- an actuating element can also be assigned to the projecting sections 6, via which active clamping is then effected.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022113500.4A DE102022113500A1 (de) | 2022-05-30 | 2022-05-30 | Transportdorn, Transportdornanordnung sowie Heizvorrichtung |
| PCT/EP2023/062329 WO2023232409A1 (de) | 2022-05-30 | 2023-05-10 | Transportdorn, transportdornanordnung sowie heizvorrichtung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4532172A1 true EP4532172A1 (de) | 2025-04-09 |
Family
ID=86497991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23725702.7A Pending EP4532172A1 (de) | 2022-05-30 | 2023-05-10 | Transportdorn, transportdornanordnung sowie heizvorrichtung |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4532172A1 (de) |
| DE (1) | DE102022113500A1 (de) |
| WO (1) | WO2023232409A1 (de) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2126917B1 (de) | 1971-01-15 | 1974-08-19 | Saint Gobain Pont A Mousson | |
| US3945486A (en) * | 1974-10-15 | 1976-03-23 | Glass Containers Corporation | Container supporting and transporting device |
| IT251756Y1 (it) * | 2000-11-07 | 2004-01-20 | Sipa Spa | Platorello perfezionato per preforme in resina |
| FR2923802B1 (fr) * | 2007-11-19 | 2012-08-31 | Sidel Participations | Dispositif de transport d'un corps creux, installation pourvue de tels dispositifs et procede de convoyage d'un corps creux solidarise a un tel dispositif. |
| DE202011105725U1 (de) | 2011-09-16 | 2011-12-19 | Schunk Gmbh & Co. Kg Spann- Und Greiftechnik | Lochgreifer |
| JP6102904B2 (ja) * | 2014-02-19 | 2017-03-29 | 大日本印刷株式会社 | ブロー成形機及びその殺菌方法 |
| FR3045444A1 (fr) * | 2015-12-16 | 2017-06-23 | Sidel Participations | Procede de fabrication de recipients et accessoire de manutention pour sa mise en œuvre |
| DE202018106385U1 (de) | 2018-11-09 | 2020-02-12 | Krones Ag | Vorrichtung zum Erwärmen von Kunststoffvorformlingen |
-
2022
- 2022-05-30 DE DE102022113500.4A patent/DE102022113500A1/de active Pending
-
2023
- 2023-05-10 EP EP23725702.7A patent/EP4532172A1/de active Pending
- 2023-05-10 WO PCT/EP2023/062329 patent/WO2023232409A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE102022113500A1 (de) | 2023-11-30 |
| WO2023232409A1 (de) | 2023-12-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| 17P | Request for examination filed |
Effective date: 20241223 |
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| AK | Designated contracting states |
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| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| P01 | Opt-out of the competence of the unified patent court (upc) registered |
Free format text: CASE NUMBER: UPC_APP_0014561_4532172/2025 Effective date: 20251125 |