WO2017168224A1 - Machine pour la production en continu d'un tube ondulé - Google Patents

Machine pour la production en continu d'un tube ondulé Download PDF

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Publication number
WO2017168224A1
WO2017168224A1 PCT/IB2016/057614 IB2016057614W WO2017168224A1 WO 2017168224 A1 WO2017168224 A1 WO 2017168224A1 IB 2016057614 W IB2016057614 W IB 2016057614W WO 2017168224 A1 WO2017168224 A1 WO 2017168224A1
Authority
WO
WIPO (PCT)
Prior art keywords
mould
face
groups
path
section
Prior art date
Application number
PCT/IB2016/057614
Other languages
English (en)
Inventor
Bruno Galli
Original Assignee
Itib Machinery International S.R.L.
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 Itib Machinery International S.R.L. filed Critical Itib Machinery International S.R.L.
Priority to RU2018137582A priority Critical patent/RU2712605C1/ru
Priority to MX2018011724A priority patent/MX2018011724A/es
Priority to BR112018069990A priority patent/BR112018069990A2/pt
Priority to EP16831737.8A priority patent/EP3436231A1/fr
Publication of WO2017168224A1 publication Critical patent/WO2017168224A1/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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/303—Extrusion nozzles or dies using dies or die parts movable in a closed circuit, e.g. mounted on movable endless support
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0017—Combinations of extrusion moulding with other shaping operations combined with blow-moulding or thermoforming
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • 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
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
    • 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
    • B29C49/0015—Making articles of indefinite length, e.g. corrugated tubes
    • B29C49/0021—Making articles of indefinite length, e.g. corrugated tubes using moulds or mould parts movable in a closed path, e.g. mounted on movable endless supports
    • 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
    • B29L2023/00—Tubular articles
    • B29L2023/18—Pleated or corrugated hoses

Definitions

  • This invention relates to the field of machines for the continuous production of corrugated tubes made of plastic material.
  • Plastic material is injected into the imprint, is distributed on the walls of the imprint and realises a section of the corrugated tube.
  • the two moulds are separated and release the section of formed tube.
  • the continuous movement of the moulds in succession along the coupling section ensures the formation of sections of corrugated tube in succession, which together realise the tube in its entirety.
  • the moulds now decoupled start off on a respective return section of the annular path, to move back to the beginning of the coupling section.
  • the purpose of this invention is to meet the needs of the industry and at the same time to provide a machine with less structural complexity.
  • Figure 1 is a layout of a machine for the continuous production of corrugated tube, according to an embodiment of this invention
  • Figure 2 shows a schematic layout of the machine of Figure 1;
  • FIGS. 3, 4 and 5 illustrate a schematic layout of a head zone of the machine, according to an embodiment of this invention, in successive steps of the movement of a mould group;
  • Figure 6 represents a mould-holder carriage of a mould group, according to an embodiment
  • Figure 7 illustrates a mould group comprising the mould-holder carriage of Figure 6;
  • Figure 8 shows a schematic layout of a head zone of the machine, which highlights the guide grooves that define the path of the mould groups;
  • Figure 9 represents a schematic layout of a head zone of the machine
  • FIG. 10 is a section view of the head zone of Figure 9, along the section plane X-X of Figure 9;
  • Figure 11 shows an axonometric view of actuation means of the machine, according to a preferred embodiment
  • Figure 12 represents transfer means of the machine, according to a preferred embodiment.
  • a machine 1 for the continuous production of corrugated tube made of plastic material is associated to an extruder 2 for the extrusion of plastic material ( Figures 1 and 2) .
  • the machine 1 comprises a first annular path 4 and a second annular path 6, side by side. Between said paths 4,6, in middle position, a coupling plane Pa is defined.
  • movable mould groups S that, according to an embodiment, are constituted by a mould- holder carriage S' and a mould S' ' , applied to the respective carriage S' and provided with an open cavity that defines one half of the imprint of the section of corrugated tube to be realised.
  • the mould group is constituted by a single body that present the cavity in itself.
  • a rectilinear coupling section 8 is recognised, contained on the coupling plane Pa, along which the moulds S'' of the two paths are respectively coupled and form a complete imprint I, corresponding to a section of the corrugated tube.
  • a curvilinear tail section 10 is recognised, contained on the coupling plane Pa, along which the moulds S'' of the two paths are respectively coupled and form a complete imprint I, corresponding to a section of the corrugated tube.
  • a curvilinear tail section 10 Following the direction of advancement of the moulds, there is also recognised, in succession, a curvilinear tail section 10, a return section 12, generally rectilinear, and a curvilinear head section 14.
  • the machine 1 also comprises a kinematic head device 20, disposed in correspondence of the head section 14, and a kinematic tail device 22, arranged in correspondence of the tail section 10, suitable to engage the mould groups S and move them along the respective paths 4,6.
  • the kinematic head device 20 comprises at least one toothed input wheel 30 having positioning and dimensions such as to engage the mould groups S in output from the return section 12, that are preparing to follow the head section 14 ( Figure 3) .
  • the kinematic head device 20 comprises at least one toothed output wheel 32 having positioning and dimensions such as to engage the mould groups S that are preparing to follow the coupling section 8, meshing with these in the moment in which they disengage from the input wheel 30.
  • the input wheel 30 is motorised, i.e., directly connected to a gear motor, while the output wheel 32 is kinematically engaged with the input wheel 30 to be actuated in rotation.
  • the kinematic head device 20 comprises a toothed transmission wheel 34 that meshes with the input wheel 30 and with the output wheel 32 to transmit the rotary motion from the input wheel 30 to the output wheel 32.
  • mould groups Si are moved pushed by the mould groups that follow them; for example, a first mould group Sil is pushed by a second mould group Si2, which in turn is pushed by a third mould group Si3.
  • the first mould group Si is pushed to mesh with the input wheel 30 of the kinematic head device 20; said input wheel 30 meshes with the entering mould group Sil and drags it in order to move it along the head section 14, so as to separate from the mould group Si2 that follows it, until sending it to the exit of the head section 14, toward the coupling section 8 of the path 4 ( Figure 4) .
  • a first mould group Sul output is about to disengage from the input wheel 30 and, at the same time, meshes with the output wheel 32, so as to be pushed toward the coupling section 8.
  • the first exiting mould group Sul is dragged by the output wheel 32 and guided so as to perform a lateral movement such as to cancel the gap G with respect to the coupling plane Pa and bring said face Ac on said coupling plane Pa.
  • the mould groups Su are pushed along the coupling section; for example, a second exiting mould group SU2 pushes a third exiting mould group SU3.
  • the whole pushing action is developed by the output wheel 32.
  • the mould-holder carriage S' is constituted by a carriage body 100, typically in a single piece of steel, provided with a longitudinally pass-through compartment
  • the carriage body 100 also comprises a support wall 104, which transversely delimits the compartment 102 on one side and intended to be engaged with the mould S' ' ; the carriage body 100 also comprises a lower wall 106 and an upper wall 108, projecting from the support wall 104, which delimit said compartment 102 interiorly and superiorly .
  • the carriage body 100 comprises guide means suitable to engage the mould group S with counter-guide means of the machine 1 for guiding the mould group S along the paths 4,6.
  • said guide means comprise an upper pin 114, projecting from the upper wall 108 in the compartment 102, and a lower pin 116, projecting from the lower wall 106 in the compartment 102.
  • said pins 114,116 are idle, to facilitate the sliding in said guides.
  • said pins are offset longitudinally; in other words, along the longitudinal direction, the axis of the first pin is offset relative to the axis of the second pin, to improve the stability of the mould group in motion.
  • the mould group S made in a single piece, is provided with guide means comprising guide walls suitable to engage with the counter-guide means of the machine.
  • the machine 1 is equipped, as said, with counter- guide means suitable to engage the guide means of the mould group S .
  • Said counter-guide means comprise a main plate 200 that extends between the head zone and the tail zone of the machine ( Figure 8) .
  • the plate 200 having a lower face, an upper face and a predefined thickness, has a first continuous groove 202 (in continuous line in Figure 8), for example formed on the upper face, which realises the guide for the first pin 114 of the mould group S, and a second continuous groove 204 (in dashed line in Figures 8, 9 and 10) , for example realised on the lower face, which realises the guide for the second pin 116 of the mould group S.
  • one of said grooves 202, 204 for example the first groove 202 has a trend characterised by two sections: a first re-entrant section 202a having trend towards the inside of the path 4,6, and a successive second section 202b having outgoing trend towards the outside of the path 4,6.
  • the succession of the re-entrant section 202a and 202b of the outgoing section operates as a cam device, so that the first exiting mould group Sul is guided so as to perform the lateral movement that cancels the gap G with respect to the coupling plane Pa and brings face Ac on the coupling plane Pa.
  • the kinematic head device 20 comprises a pair of coaxial toothed output wheels, and in particular a lower output wheel 32a, placed below the plate 200, and an upper output wheel 32b, placed above the plate 200; preferably, moreover, the kinematic head device 20 comprises a pair of coaxial toothed transmission wheels, and in particular a lower transmission wheel 34a, placed below the plate 200, and an upper transmission wheel 34b, placed above the plate 200 ( Figure 11) .
  • the kinematic tail device 22 is structurally and functionally identical to the kinematic head device 20.
  • the machine 1 comprises actuation means suitable for moving said kinematic devices 20,22.
  • said actuating means comprise a single electric motor 300, for example positioned on a ground plane T, in an intermediate position, preferably centrally, between the respective plates 200 of the first path 4 and of the second path 6.
  • the actuation means further comprise a first shaft 302 connected to the motor 300, typically horizontal, i.e., having its rotation axis parallel to the ground plane T, a return device 304, and a second shaft 306, typically vertical, i.e., with rotation axis perpendicular to the ground plane T.
  • the return device 304 takes motion from the first horizontal shaft 302 and transmits it to the second vertical shaft 306.
  • the second shaft 306 is operatively connected to the input wheel 30, moving it in rotation.
  • the presence of a single electric motor that moves the head kinematic devices 20 of the two paths ensures an excellent synchrony of movement of the mould groups S, essential for an optimal coupling on the coupling plane Pa.
  • the actuation means further comprise transfer means suitable to transfer the motion from the kinematic head device 20 to the kinematic tail device 22 (or, in a variant embodiment, vice versa) .
  • Said transfer means comprise for example a chain 320 engaged with the head device 20, which operates as a power take-off, and with the tail device 22, for the actuation of the latter ( Figure 12) .
  • said transfer means allow synchronising the movement of the head devices with the movement of the tail devices.
  • the chain also carries integrated part of the cooling circuit of the moulds.
  • the machine according to this invention overcomes the prior art drawbacks, since it is particularly simple in structure, especially in the part that allows the guidance of the mould groups.
  • the counter-guide means prevent a collision between the mould groups exiting from the head section of the two adjacent paths .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

L'invention concerne une machine (1) pour la production en continu d'un tube ondulé, comprenant des moyens de contre-guidage appropriés pour guider les groupes de moules le long de deux voies annulaires (4, 6). Entre l'extrémité de la section de tête (14) et le début de la section de couplage (8) de ladite voie, un groupe de moules prédéfini (S) présente une face respective (Ac), sur laquelle s'ouvre une cavité (C) qui définit une demi-empreinte (I), écartée du plan de couplage (Pa). Les moyens de contre-guidage comprennent un dispositif à cames (202a, 202b) qui coopère avec ledit groupe de moules (S) prédéfini pour qu'il effectue un mouvement qui amène ladite face (Ac) sur le plan de couplage (Pa), ce qui permet d'éviter une collision avec le groupe de moules sortant de la section de tête de la voie adjacente.
PCT/IB2016/057614 2016-03-29 2016-12-14 Machine pour la production en continu d'un tube ondulé WO2017168224A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
RU2018137582A RU2712605C1 (ru) 2016-03-29 2016-12-14 Станок для непрерывного производства гофрированной трубы
MX2018011724A MX2018011724A (es) 2016-03-29 2016-12-14 Maquina para la produccion continua de un tubo corrugado.
BR112018069990A BR112018069990A2 (pt) 2016-03-29 2016-12-14 máquina para a produção contínua de um tubo corrugado
EP16831737.8A EP3436231A1 (fr) 2016-03-29 2016-12-14 Machine pour la production en continu d'un tube ondulé

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITUA2016A002082A ITUA20162082A1 (it) 2016-03-29 2016-03-29 Macchina per la produzione in continuo di tubo corrugato
IT102016000032048 2016-03-29

Publications (1)

Publication Number Publication Date
WO2017168224A1 true WO2017168224A1 (fr) 2017-10-05

Family

ID=56296947

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2016/057614 WO2017168224A1 (fr) 2016-03-29 2016-12-14 Machine pour la production en continu d'un tube ondulé

Country Status (7)

Country Link
EP (1) EP3436231A1 (fr)
BR (1) BR112018069990A2 (fr)
IT (1) ITUA20162082A1 (fr)
MA (1) MA43641A (fr)
MX (1) MX2018011724A (fr)
RU (1) RU2712605C1 (fr)
WO (1) WO2017168224A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4357104A1 (fr) * 2022-10-18 2024-04-24 UNICOR GmbH Dispositif pour la fabrication de tubes en matière plastique

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4325685A (en) * 1980-09-12 1982-04-20 Lupke Manfred Arno Alfred Apparatus for producing thermoplastic tubing having interchangeable mold blocks
US5393211A (en) * 1992-07-24 1995-02-28 Wilhelm Hegler Apparatus for the manufacture of a plastic pipe having transverse profile features
US6719942B1 (en) * 1999-09-08 2004-04-13 David A. Triplett Method and apparatus for production of tubing

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2501044B2 (de) * 1975-01-13 1980-01-10 Fraenkische Isolierrohr- & Metallwaren-Werke, Gebr. Kirchner, 8729 Koenigsberg Vorrichtung zum Herstellen von Wellrohren aus thermoplastischem Kunststoff
US4504206A (en) * 1982-01-21 1985-03-12 Lupke Manfred Arno Alfred Chainless mold drive for a corrugator or the like

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4325685A (en) * 1980-09-12 1982-04-20 Lupke Manfred Arno Alfred Apparatus for producing thermoplastic tubing having interchangeable mold blocks
US5393211A (en) * 1992-07-24 1995-02-28 Wilhelm Hegler Apparatus for the manufacture of a plastic pipe having transverse profile features
US6719942B1 (en) * 1999-09-08 2004-04-13 David A. Triplett Method and apparatus for production of tubing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4357104A1 (fr) * 2022-10-18 2024-04-24 UNICOR GmbH Dispositif pour la fabrication de tubes en matière plastique

Also Published As

Publication number Publication date
MX2018011724A (es) 2019-02-14
EP3436231A1 (fr) 2019-02-06
RU2712605C1 (ru) 2020-01-29
ITUA20162082A1 (it) 2017-09-29
BR112018069990A2 (pt) 2019-02-05
MA43641A (fr) 2018-11-28

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