FR2821010A1 - Plastic and silicone injector nozzle cut-out bar controller has power cylinder to one side of nozzle and connected to bar by lever - Google Patents

Plastic and silicone injector nozzle cut-out bar controller has power cylinder to one side of nozzle and connected to bar by lever Download PDF

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Publication number
FR2821010A1
FR2821010A1 FR0102233A FR0102233A FR2821010A1 FR 2821010 A1 FR2821010 A1 FR 2821010A1 FR 0102233 A FR0102233 A FR 0102233A FR 0102233 A FR0102233 A FR 0102233A FR 2821010 A1 FR2821010 A1 FR 2821010A1
Authority
FR
France
Prior art keywords
nozzle
rod
axis
cut
lever
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Withdrawn
Application number
FR0102233A
Other languages
French (fr)
Inventor
Jean Philippe Seymarc
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PLASTIQUES APPLIQUEES EPA ET
Original Assignee
PLASTIQUES APPLIQUEES EPA ET
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 PLASTIQUES APPLIQUEES EPA ET filed Critical PLASTIQUES APPLIQUEES EPA ET
Priority to FR0102233A priority Critical patent/FR2821010A1/en
Publication of FR2821010A1 publication Critical patent/FR2821010A1/en
Withdrawn legal-status Critical Current

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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/28—Closure devices therefor
    • B29C45/2806—Closure devices therefor consisting of needle valve systems
    • B29C45/281—Drive means therefor
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/28—Closure devices therefor
    • B29C45/2806—Closure devices therefor consisting of needle valve systems
    • B29C45/281—Drive means therefor
    • B29C2045/2834—Needle valves driven by a lever
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/28—Closure devices therefor
    • B29C45/2806—Closure devices therefor consisting of needle valve systems
    • B29C2045/2865—Closure devices therefor consisting of needle valve systems having position detecting means

Landscapes

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

Abstract

The nozzle controller, designed to shut off a plastic or silicone injector nozzle by moving a cut-out bar (11) axially, consists of a hydraulic or pneumatic power cylinder (2) positioned to one side of the nozzle (1) and having its rod connected to the nozzle cut-out bar by a lever (3). The nozzle controller, designed to shut off a plastic or silicone injector nozzle by moving a cut-out bar (11) axially, consists of a hydraulic or pneumatic power cylinder (2) positioned to one side of the nozzle (1) and having its rod connected to the nozzle cut-out bar by a lever (3). The lever is connected to the power cylinder rod and cutout bar by articulated joints in the form of brackets (12, 13) with pivots (14, 15) set in notches (16, 17) in the lever ends. The position of the cut-out bar is monitored by a detector rod (21) connected to the power cylinder, and the cut-out bar is centered by a star-shaped component.

Description

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La présente invention a pour objet un dispositif de commande du mécanisme d'obturation d'une buse d'injection dans le domaine de l'injection des matières plastiques et silicones.  The present invention relates to a device for controlling the shutter mechanism of an injection nozzle in the field of injection of plastics and silicones.

Dans le domaine de l'injection des matières plastiques, les buses comportent généralement un obturateur formé par un axe d'obturation commandé en translation axiale pour la fermeture ou l'ouverture de ladite buse au moyen d'un vérin hydraulique ou pneumatique, supporté par une plaque métallique comportant un usinage formant le logement dudit vérin, disposé à l'arrière de ladite buse soit dans l'axe de cette dernière soit à 90'au moyen d'une pièce de renvoi d'angle.  In the field of plastic injection, the nozzles generally comprise a shutter formed by a shutter axis controlled in axial translation for closing or opening said nozzle by means of a hydraulic or pneumatic cylinder, supported by a metal plate comprising a machining forming the housing of said cylinder, disposed at the rear of said nozzle either in the axis of the latter or at 90 ′ by means of a corner gear.

Toutefois dans ces dispositifs de commande l'accès à l'obturateur est rendu difficile par le démontage des plaques qui supportent les vérins et qui sont très lourdes pour des moules de grandes dimensions. Cette difficulté augmente le coût de la maintenance et ne permet pas en outre à l'opérateur de régler aisément la position de l'axe de l'obturateur préalablement à la mise en fonction du moule et lors de la mise au point de celui-ci.  However, in these control devices access to the shutter is made difficult by removing the plates which support the jacks and which are very heavy for large molds. This difficulty increases the cost of maintenance and does not also allow the operator to easily adjust the position of the shutter axis before the mold is put into operation and during the development thereof. .

D'autre part la présence de plaques de support de forte épaisseur pour des moules de grandes dimensions augmente d'autant le coût de revient de ces derniers.  On the other hand, the presence of very thick support plates for large molds increases the cost price of the latter all the more.

Un autre inconvénient est que l'obturateur se trouve à proximité du vérin qui subit par la même directement les calories provenant de la buse qui est en contact avec l'axe d'obturation.  Another disadvantage is that the shutter is located near the cylinder which undergoes the same directly calories from the nozzle which is in contact with the shutter axis.

La présente invention a pour but de remédier à ces inconvénients en proposant un dispositif de commande de l'obturateur d'une buse d'injection dans le domaine de l'injection des matières plastiques et silicones permettant de diminuer le coût de revient des moules de grandes dimensions, de faciliter les opérations de réglage de la position de l'obturateur et de diminuer le coût de la maintenance du mécanisme d'obturation de la buse d'injection  The object of the present invention is to remedy these drawbacks by proposing a device for controlling the shutter of an injection nozzle in the field of injection of plastics and silicones making it possible to reduce the cost price of the molds of large dimensions, to facilitate the operations of adjusting the position of the shutter and to reduce the cost of maintenance of the shutter mechanism of the injection nozzle

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et d'autre part encore supprimer ou limiter l'usinage pratiqué dans la plaque support du vérin tout en conférant un encombrement réduit à l'ensemble du dispositif.  and on the other hand, to suppress or limit the machining carried out in the support plate of the jack while giving a reduced bulk to the whole of the device.

Le dispositif de commande en ouverture ou fermeture d'une buse d'injection selon la présente invention est du type comportant un vérin hydraulique ou pneumatique dont la tige est adaptée pour actionner le déplacement axial de l'axe d'obturation de ladite buse et se caractérise essentiellement en ce que ledit vérin est positionné latéralement à ladite buse et en ce que la tige dudit vérin est reliée à l'axe de l'obturateur par l'intermédiaire de moyens de renvoi.  The device for controlling the opening or closing of an injection nozzle according to the present invention is of the type comprising a hydraulic or pneumatic cylinder, the rod of which is adapted to actuate the axial movement of the shutter axis of said nozzle and is essentially characterized in that said cylinder is positioned laterally to said nozzle and in that the rod of said cylinder is connected to the axis of the shutter by means of return means.

Dans un mode de réalisation préférentiel les moyens de renvoi consistent en une biellette montée en rotation autour d'un axe sensiblement en son milieu et articulée à l'une de ses extrémités à l'axe d'obturation et à son autre extrémité à la tige du vérin, ce qui permet d'effectuer un réglage de l'effort sur l'axe d'obturation en fonction d'une matière injectée particulière, telle que par exemple une matière technique très visqueuse, une matière composite ou une matière recyclée.  In a preferred embodiment, the deflection means consist of a rod mounted in rotation about an axis substantially in the middle and articulated at one of its ends to the shutter axis and at its other end to the rod. of the jack, which makes it possible to adjust the force on the shutter axis as a function of a particular injected material, such as for example a highly viscous technical material, a composite material or a recycled material.

Les avantages et les caractéristiques de la présente invention ressortiront plus clairement de la description qui suit et qui se rapporte au dessin annexé, lequel en représente un mode de réalisation non limitatif.  The advantages and characteristics of the present invention will emerge more clearly from the description which follows and which refers to the appended drawing, which represents a non-limiting embodiment thereof.

La figure représente une vue de dessus du dispositif de commande selon la présente invention.  The figure shows a top view of the control device according to the present invention.

La figure montre une buse d'injection 1 traversée par un canal d'injection 10 renfermant un axe d'obturation 11 du canal 10 commandé en translation axiale sous l'effet d'un vérin 2 par l'intermédiaire d'une biellette de renvoi 3.  The figure shows an injection nozzle 1 crossed by an injection channel 10 containing a shutter axis 11 of the channel 10 controlled in axial translation under the effect of a jack 2 by means of a return link 3.

La biellette 3 est montée pivotante sensiblement en son milieu autour d'un axe 30 solidarisé sur un plot 31 et est articulée à l'une de ses extrémités à l'axe  The link 3 is pivotally mounted substantially in its middle around an axis 30 secured to a stud 31 and is articulated at one of its ends to the axis

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d'obturation 11 et à l'autre extrémité à la tige 20 du vérin 2.  shutter 11 and at the other end to the rod 20 of the jack 2.

Les extrémités de la biellette 3 sont reliées à la tige 20 du vérin 2 et à l'axe d'obturation 30 respectivement au moyen d'une chape 12,13 qui comporte un axe respectivement 14,15 engagé dans une encoche 16,17 oblongue pratiquée dans l'extrémité de la biellette 3.  The ends of the link 3 are connected to the rod 20 of the jack 2 and to the obturation axis 30 respectively by means of a yoke 12.13 which has an axis respectively 14.15 engaged in an oblong notch 16.17 made in the end of the rod 3.

L'axe d'obturation 11 est centré dans le canal d'injection 10 au moyen d'une pièce 18 en forme d'étoile qui laisse passer la matière entre ses branches.  The shutter axis 11 is centered in the injection channel 10 by means of a star-shaped part 18 which lets the material pass between its branches.

La position de l'axe d'obturation est contrôlé au moyen d'une tige de détection 21 solidarisée axialement à la face arrière 23 du fût 22 du vérin 2. Le contrôle de position peut être du type magnétique, inductif, optique autre type de détection.  The position of the shutter axis is controlled by means of a detection rod 21 secured axially to the rear face 23 of the barrel 22 of the jack 2. The position control can be of the magnetic, inductive, optical type other type of detection.

Le vérin 2 dont l'axe est parallèle à l'axe d'obturation 11 de la buse 1 est ainsi positionné latéralement à la buse 1 et à distance de cette dernière ce qui permet d'avoir aisément accès à l'axe d'obturation 11 et pour sa maintenance et de pouvoir effectuer sans difficulté le réglage de la course de l'axe d'obturation en agissant simplement, sans gène, sur le vérin 2 pour ajuster sa position. The jack 2, the axis of which is parallel to the obturation axis 11 of the nozzle 1, is thus positioned laterally and at a distance from the nozzle 1, which allows easy access to the obturation axis. 11 and for its maintenance and to be able to carry out without difficulty the adjustment of the travel of the shutter axis by simply acting, without hindrance, on the jack 2 to adjust its position.

Claims (5)

REVENDICATIONS 1) Dispositif de commande, dans le domaine de l'injection des matières plastiques et silicones, de l'axe d'obturation d'une buse d'injection (1) du type comportant un vérin (2) hydraulique ou pneumatique dont la tige (20) est adaptée pour actionner le déplacement axial de l'axe d'obturation (11) de ladite buse (1) caractérisé en ce que ledit vérin est positionné latéralement à la buse (1) et en ce que la tige (20) dudit vérin (2) est reliée à l'axe d'obturation (11) de la buse (1) par l'intermédiaire de moyens de renvoi (3).  1) Control device, in the field of injection of plastics and silicones, of the shutter axis of an injection nozzle (1) of the type comprising a hydraulic or pneumatic jack (2) whose rod (20) is adapted to actuate the axial displacement of the shutter axis (11) of said nozzle (1) characterized in that said cylinder is positioned laterally to the nozzle (1) and in that the rod (20) said cylinder (2) is connected to the closure axis (11) of the nozzle (1) by means of return means (3). 2) Dispositif de commande selon la revendication 1 caractérisé en ce que les moyens de renvoi consistent en une biellette (3) articulée à l'une de ses extrémités à l'axe d'obturation (11) et à son autre extrémité à la tige (20) du vérin (2).  2) Control device according to claim 1 characterized in that the return means consist of a link (3) articulated at one of its ends to the shutter axis (11) and at its other end to the rod (20) of the jack (2). 3) Dispositif de commande selon la revendication 2 caractérisé en ce que les extrémités de la biellette (3) sont reliées à la tige (20) du vérin (2) et à l'axe d'obturation (30) respectivement au moyen d'une chape (12, 13) qui comporte un axe respectivement 14,15 engagé dans une encoche (16,17) pratiquée dans l'extrémité de la biellette (3).  3) control device according to claim 2 characterized in that the ends of the rod (3) are connected to the rod (20) of the cylinder (2) and to the shutter axis (30) respectively by means of a yoke (12, 13) which has an axis 14,15 respectively engaged in a notch (16,17) formed in the end of the link (3). 4) Dispositif de commande selon l'une quelconque des revendications précédentes caractérisé en ce que La position de l'axe d'obturation (11) est contrôlé au moyen d'une tige de détection (21) solidarisée au vérin de commande (2).  4) Control device according to any one of the preceding claims, characterized in that the position of the shutter axis (11) is controlled by means of a detection rod (21) secured to the control cylinder (2) . 5) Dispositif de commande selon l'une quelconque des revendications précédentes caractérisé en ce que l'axe d'obturation (11) est centré au moyen d'une pièce en forme d'étoile. 5) A control device according to any one of the preceding claims characterized in that the shutter axis (11) is centered by means of a star-shaped part.
FR0102233A 2001-02-19 2001-02-19 Plastic and silicone injector nozzle cut-out bar controller has power cylinder to one side of nozzle and connected to bar by lever Withdrawn FR2821010A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0102233A FR2821010A1 (en) 2001-02-19 2001-02-19 Plastic and silicone injector nozzle cut-out bar controller has power cylinder to one side of nozzle and connected to bar by lever

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0102233A FR2821010A1 (en) 2001-02-19 2001-02-19 Plastic and silicone injector nozzle cut-out bar controller has power cylinder to one side of nozzle and connected to bar by lever

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FR2821010A1 true FR2821010A1 (en) 2002-08-23

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2047961A1 (en) * 2007-10-12 2009-04-15 Mold-Masters (2007) Limited Actuator position sensing for a needle-valve for injection molding
FR2939353A1 (en) * 2008-12-09 2010-06-11 Runipsys Europ SYSTEM FOR INJECTING THERMOPLASTIC MATERIAL
US8597019B2 (en) 2009-06-17 2013-12-03 Runipsys Europe Nozzle and system for injecting thermoplastic material
CN109624231A (en) * 2017-09-07 2019-04-16 袁福德 A kind of more mouth of a river synchronous shearing machines of abnormity moulding

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2773284A (en) * 1953-03-13 1956-12-11 Columbus Plastic Products Inc Die construction for pressure injection molding machines
DE3237924A1 (en) * 1982-10-13 1984-04-19 Incoe Exp. Inc. Deutschland, 6072 Dreieich Shut-off nozzle for injection-moulding machines
US4712995A (en) * 1987-03-19 1987-12-15 Die-Mold Tool Ltd. Replaceable rocker arm assembly for injection molding system
JPH0596578A (en) * 1991-10-14 1993-04-20 Mitsubishi Materials Corp Valve gate type mold assembly
EP0832729A1 (en) * 1996-09-30 1998-04-01 EUROTOOL Beheer B.V. Valve-gated injection moulding device
US5948450A (en) * 1996-09-27 1999-09-07 Dynisco Hotrunners, Inc. Valve actuated injection molding apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2773284A (en) * 1953-03-13 1956-12-11 Columbus Plastic Products Inc Die construction for pressure injection molding machines
DE3237924A1 (en) * 1982-10-13 1984-04-19 Incoe Exp. Inc. Deutschland, 6072 Dreieich Shut-off nozzle for injection-moulding machines
US4712995A (en) * 1987-03-19 1987-12-15 Die-Mold Tool Ltd. Replaceable rocker arm assembly for injection molding system
JPH0596578A (en) * 1991-10-14 1993-04-20 Mitsubishi Materials Corp Valve gate type mold assembly
US5948450A (en) * 1996-09-27 1999-09-07 Dynisco Hotrunners, Inc. Valve actuated injection molding apparatus
EP0832729A1 (en) * 1996-09-30 1998-04-01 EUROTOOL Beheer B.V. Valve-gated injection moulding device

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
KAZMER D ET AL: "MULTI-CAVITY PRESSURE CONTROL IN THE FILLING AND PACKING STAGES OF THE INJECTION MOLDING PROCESS", POLYMER ENGINEERING & SCIENCE, SOCIETY OF PLASTICS ENGINEERS, US, vol. 37, no. 11, November 1997 (1997-11-01), pages 1865 - 1879, XP000776243, ISSN: 0032-3888 *
PATENT ABSTRACTS OF JAPAN vol. 17, no. 433 (M - 1461) 11 August 1993 (1993-08-11) *
SPAAK A., KELLY G.: "Valve gating of injection molds", MODERN PLASTICS., vol. 36, no. 1, September 1958 (1958-09-01), MCGRAW-HILL,INC. LAUSANNE., CH, pages 117 - 120, XP002182446 *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2047961A1 (en) * 2007-10-12 2009-04-15 Mold-Masters (2007) Limited Actuator position sensing for a needle-valve for injection molding
US7918660B2 (en) 2007-10-12 2011-04-05 Mold-Masters (2007) Limited Injection molding actuator position sensing
FR2939353A1 (en) * 2008-12-09 2010-06-11 Runipsys Europ SYSTEM FOR INJECTING THERMOPLASTIC MATERIAL
WO2010066671A1 (en) * 2008-12-09 2010-06-17 Runipsys Europe System for injecting a thermoplastic material
CN102245369A (en) * 2008-12-09 2011-11-16 瑞尼浦斯欧洲公司 System for injecting a thermoplastic material
US8375579B2 (en) 2008-12-09 2013-02-19 Runipsys Europe System for injecting a thermoplastic material
CN102245369B (en) * 2008-12-09 2015-04-08 瑞尼浦斯欧洲公司 System for injecting a thermoplastic material
US8597019B2 (en) 2009-06-17 2013-12-03 Runipsys Europe Nozzle and system for injecting thermoplastic material
CN109624231A (en) * 2017-09-07 2019-04-16 袁福德 A kind of more mouth of a river synchronous shearing machines of abnormity moulding
CN109624231B (en) * 2017-09-07 2020-11-20 安徽小飞智能科技有限公司 Multi-water-gap synchronous shearing machine for special-shaped injection molding parts

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