EP3188883A1 - Moule pour machine de soufflage et machine de soufflage equipee d'un tel moule - Google Patents
Moule pour machine de soufflage et machine de soufflage equipee d'un tel mouleInfo
- Publication number
- EP3188883A1 EP3188883A1 EP15760146.9A EP15760146A EP3188883A1 EP 3188883 A1 EP3188883 A1 EP 3188883A1 EP 15760146 A EP15760146 A EP 15760146A EP 3188883 A1 EP3188883 A1 EP 3188883A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mold
- mould
- parts
- tube
- vent
- 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.)
- Withdrawn
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
- B29C49/62—Venting 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/30—Mounting, exchanging or centering
- B29C33/301—Modular mould systems [MMS], i.e. moulds built up by stacking mould elements, e.g. plates, blocks, rods
- B29C33/302—Assembling a large number of mould elements to constitute one cavity
-
- 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
- B29C49/6409—Thermal conditioning of preforms
- B29C49/6418—Heating of preforms
-
- 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
- B29C49/62—Venting means
- B29C2049/622—Venting means for venting air between preform and cavity, e.g. using venting holes, gaps or patterned moulds
-
- 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
- B29C33/10—Moulds or cores; Details thereof or accessories therefor with incorporated venting means
-
- 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
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/25—Solid
- B29K2105/253—Preform
- B29K2105/258—Tubular
-
- 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 the field of shaping materials by means of a mold.
- the invention more particularly relates to a mold and a blowing machine comprising such a mold.
- Articles blowing machines are known from a tube of thermo-softenable material such as a thermoplastic material. Said material is either extruded directly in the form of a tube or, at first, in the form of a band shaped as a tube in a second step.
- a blowing machine comprises a heating means, means for feeding the tube to a mold through the heating means, and an air injection member in the tube.
- the mold has at least two mold parts movable relative to each other between a closed position, in which they define a mold cavity, and an open position.
- a section of the tube having been previously heated, is enclosed in the mold and air injected into this section inflates the tube and apply against the inner wall of the mold defining the impression.
- the mold is then opened to allow the evacuation of the article obtained and the advancement between the mold parts of a new section of heated tube.
- At least one of the mold parts has a vent opening into the cavity and outside the mold. This vent has a circular passage section adapted to allow a sufficient air flow so that all trapped air is expelled through the vent under the pressure exerted by the tube during inflation.
- the vent has the largest possible section so that all air can be removed from the mold under the deformation of the tube.
- this section is too large, there is a risk that under the blowing pressure, the material softened by the heat penetrates slightly into this event causing a surface defect, or even shape, of this article.
- An object of the invention is to provide a means for solving this problem.
- a mold comprising at least two mold parts that are movable relative to one another between a closed position in which they delimit an imprint and an open position. At least one of the mold parts has a vent opening into the cavity and outside the mold and having a predetermined passage section to allow evacuation of air when the mold is closed.
- Said mold part comprises at least two parts which extend at least over a whole dimension of the cavity of the mold and which are assembled to one another, the parts being kept apart from each other by at least one spacer to delimit between them a gap opening inside the cavity and outside the mold to form the vent.
- the gap extends over an entire dimension of the mold portion so that it can have a relatively large length with a relatively small thickness that allows for the evacuation of air while limiting the risk of penetration of softened material into the gap.
- the thickness of the gap is constant and is equal to the thickness of 1 'spacer: the footprint is in permanent communication with the environment outside the mold during the entire molding operation.
- the two mold parts comprise parts assembled to one another and held apart from each other by at least one spacer to delimit between them a gap, and / or said or each mold part.
- the passage section is then further increased while the thickness of the interstices can be decreased further reducing the risk of penetration of the softened material into the vent.
- the subject of the invention is also a machine for blowing articles from a tube material, comprising means for feeding the tube to a mold of the invention, means for heating the tube upstream of the tube. mold and an air blowing member in the tube.
- Figure 1 is a schematic perspective view of a mold according to the invention
- Figure 2 is a schematic perspective and exploded view of this mold
- Figure 3 is a schematic perspective view of a blowing machine according to the invention.
- the mold according to the invention generally designated 100, comprises two mold parts generally designated 1, only one of which is visible in the figures, each having an inner wall 2 which delimits an impression portion 3.
- the mold parts 1 are movable relative to each other between a closed position and an open position. To this end, the mold parts 1 are, in a manner known per se, mounted on a frame and associated with an actuator. When the mold parts 1 are in the closed position, the impression parts
- the mold of the invention is here intended for the manufacture of containers having a body surmounted by a neck and having a central axis.
- the shape of the impression corresponds to the external shape of the container and has a longitudinal axis X coinciding with the central axis of the container.
- the two mold parts 1 are each formed of a plurality of parts stacked on each other.
- the pieces here have the form of parallel-faced plates forming slices 4 of the mold parts 1.
- the slices 4 are perpendicular to the X axis and are stacked along this axis. Between each pair of slices
- each gap 10 extends parallel to a plane transverse to the X axis to open out of the mold 100 on three sides of this one, the mold 100 having here a section with rectangular contour).
- Columns parallel to the axis X are engaged in holes 5 of the slices 4 to hold the slices 4 in position according to directions transverse to the X axis.
- the mold thus comprises a plurality of interstices 10 forming a vent opening inside the cavity and outside the mold 100 and having a passage section equal to a sum of the passage sections of the interstices 10.
- the section The passage of the vent is determined to allow sufficient evacuation of air when the mold is closed.
- Each mold part 1 is also provided with a retractable bottom 6 to facilitate evacuation of the molded articles after opening of the mold parts 1.
- the mold 100 of the invention is here described in application to a blowing machine 101 comprising a device 102 for supplying the machine with heat-softenable material in the form of a tube and for moving the tube in the machine along the line. a vertical displacement path.
- the heat-softenable material is here a thermoplastic material.
- the machine 100 Downstream of the device 102, are successively mounted along the path of movement an oven 103 and the mold 100 such that the tube is conducted in the oven 103 and in the mold 1.
- the machine 100 further comprises a member 104 blowing air into the tube.
- the passage section of the vent of the mold 100 is determined to allow, at the time of blowing when the mold 100 is closed, a sufficient discharge of air trapped between the tube and the inner wall 2 of the mold 100 defining the impression .
- This passage section will be defined by the number of interstices 10 and not by their thickness, which is chosen so that the material constituting the tube, once softened, can not enter the interstices 10 during blowing.
- the invention is not limited to the embodiments described but encompasses any variant within the scope of the invention as defined by the claims.
- the invention is applicable in particular to blowing machines from extruded tube or formed from the welding of a flat strip.
- Only one of the mold parts can be made by assembling parts.
- the number of interstices is determined according to the desired flow rate for the exhaust air.
- the spacers holding the spaced apart slices may be in one piece with or separate from said slices.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Moulds For Moulding Plastics Or The Like (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 |
---|---|---|---|
FR1458362A FR3025451B1 (fr) | 2014-09-05 | 2014-09-05 | Moule pour machine de soufflage et machine de soufflage equipee d'un tel moule |
PCT/EP2015/070192 WO2016034690A1 (fr) | 2014-09-05 | 2015-09-03 | Moule pour machine de soufflage et machine de soufflage equipee d'un tel moule |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3188883A1 true EP3188883A1 (fr) | 2017-07-12 |
Family
ID=51726805
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15760146.9A Withdrawn EP3188883A1 (fr) | 2014-09-05 | 2015-09-03 | Moule pour machine de soufflage et machine de soufflage equipee d'un tel moule |
Country Status (5)
Country | Link |
---|---|
US (1) | US9902106B2 (fr) |
EP (1) | EP3188883A1 (fr) |
CN (1) | CN106794620A (fr) |
FR (1) | FR3025451B1 (fr) |
WO (1) | WO2016034690A1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110667082B (zh) * | 2019-09-22 | 2021-02-05 | 佛山市禅城区惠汇塑料有限公司 | 一种环保散热型吹塑模具 |
US20210206026A1 (en) * | 2019-12-13 | 2021-07-08 | Wichita State University | Systems and methods for mold creation |
DE102022121447A1 (de) * | 2022-08-24 | 2024-02-29 | Krones Aktiengesellschaft | Aseptische Blasform mit rückseitigen Abgaskanälen und Verfahren zum Formen von Behältnissen unter aseptischen Bedingungen |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2605546C3 (de) * | 1976-02-10 | 1986-03-27 | Battenfeld Maschinenfabriken Gmbh, 5882 Meinerzhagen | Blasform zur Herstellung von Faltenbälgen aus Kunststoff |
JPH0757521B2 (ja) * | 1986-02-21 | 1995-06-21 | 株式会社吉野工業所 | 飽和ポリエステル瓶の製造方法 |
US5031483A (en) * | 1989-10-06 | 1991-07-16 | W. R. Weaver Co. | Process for the manufacture of laminated tooling |
JP2571509B2 (ja) * | 1993-01-29 | 1997-01-16 | 日精樹脂工業株式会社 | ブロー成形方法 |
JP3595571B2 (ja) * | 1993-05-07 | 2004-12-02 | 日精エー・エス・ビー機械株式会社 | 二重壁ボトルとその成形方法及び装置 |
FR2756509B1 (fr) * | 1996-12-04 | 1999-01-08 | Oreal | Moulage par soufflage d'un recipient en matiere thermoplastique |
JP4201223B2 (ja) * | 1998-10-20 | 2008-12-24 | 株式会社フロンティア | 二軸延伸ブロー成形機 |
US20090142549A1 (en) * | 2007-11-30 | 2009-06-04 | Floodcooling Technologies, L.L.C. | Fastened connections for laminate tooling |
-
2014
- 2014-09-05 FR FR1458362A patent/FR3025451B1/fr not_active Expired - Fee Related
-
2015
- 2015-09-03 EP EP15760146.9A patent/EP3188883A1/fr not_active Withdrawn
- 2015-09-03 CN CN201580047095.5A patent/CN106794620A/zh active Pending
- 2015-09-03 WO PCT/EP2015/070192 patent/WO2016034690A1/fr active Application Filing
- 2015-09-04 US US14/845,844 patent/US9902106B2/en active Active
Non-Patent Citations (2)
Title |
---|
None * |
See also references of WO2016034690A1 * |
Also Published As
Publication number | Publication date |
---|---|
US9902106B2 (en) | 2018-02-27 |
FR3025451A1 (fr) | 2016-03-11 |
WO2016034690A1 (fr) | 2016-03-10 |
FR3025451B1 (fr) | 2016-11-25 |
CN106794620A (zh) | 2017-05-31 |
US20160067904A1 (en) | 2016-03-10 |
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