EP2504142A1 - Processus de moulage par injection d'un élément et appareil pour mettre en uvre ledit processus - Google Patents

Processus de moulage par injection d'un élément et appareil pour mettre en uvre ledit processus

Info

Publication number
EP2504142A1
EP2504142A1 EP10768572A EP10768572A EP2504142A1 EP 2504142 A1 EP2504142 A1 EP 2504142A1 EP 10768572 A EP10768572 A EP 10768572A EP 10768572 A EP10768572 A EP 10768572A EP 2504142 A1 EP2504142 A1 EP 2504142A1
Authority
EP
European Patent Office
Prior art keywords
layer
injection molding
male
impression
impressions
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Withdrawn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
EP10768572A
Other languages
German (de)
English (en)
Inventor
Claudio Bariselli
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.)
Borromini Srl
Original Assignee
Borromini Srl
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 Borromini Srl filed Critical Borromini Srl
Publication of EP2504142A1 publication Critical patent/EP2504142A1/fr
Withdrawn legal-status Critical Current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
    • B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
    • 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
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1615—The materials being injected at different moulding stations
    • B29C45/162—The materials being injected at different moulding stations using means, e.g. mould parts, for transferring an injected part between moulding stations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00009—Production of simple or compound lenses
    • B29D11/00432—Auxiliary operations, e.g. machines for filling the moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/0073—Optical laminates
    • 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
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C2045/1682—Making multilayered or multicoloured articles preventing defects
    • 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
    • B29L2011/00—Optical elements, e.g. lenses, prisms
    • B29L2011/0016—Lenses

Definitions

  • the present invention refers in general to an injection molding process and to an apparatus for implementing said process.
  • thermoplastic material is melted and then, it is injected under pressure in a mold formed by two matrices, one of the matrices being movable to allow the removal of the finished piece.
  • One of the critical factors in the injection molding is the possible shrink of the piece material in the mold during the phase of solidification and cooling; for the control of the shrink, the injection molding process according to the prior art provides that the melted material is injected continuously and put under pressure even during the phase of cooling and solidification of the piece.
  • this process allows to improve the qualitative standard, to reduce the weight of the finished product and to reduce the costs of production in comparison with a lens of glass.
  • the production of lenses through the injection molding allows a repetition of the productive process and to give the product a measurable qualitative standard that can be controlled and reproduced easily in order to eliminate the variable factor of the ability of the operator who manufactures the lens of glass.
  • the production of a lens of plastic needs a long time of production and the thicker the lens is, the longer the time of production is.
  • the molding cycle according to the known art may last 10 to 20 min to obtain a finished article.
  • An aim of the invention is to remove the aforesaid drawbacks and further ones by carrying out an injection molding process, adapted to reduce the time of production of the article in comparison with the known technology.
  • Another aim of the invention is to carry out a simple repeated injection molding process giving a measurable qualitative standard to the finished product, which standard is controlled and reproduced easily.
  • a further aim of the invention is to carry out an apparatus for producing an article through injection molding, said apparatus being rapid and simple to be used.
  • a further aim of the invention is to reduce the time of the injection molding of a lens manufactured in a plastic material.
  • the process according to the invention provides, therefore, the injection molding of at least two layers of thermoplastic material, one upon the other, at temperatures of molding and in times of molding that make the various layers melt in an only body, but at the same time make the cooling temperatures of the single layers reduce in order to reduce the time of production of the finished product.
  • the time of production of the finished manufacture may be reduced further on.
  • the process provides that after each phase of injection molding, the movable matrix shifts and the cavity translates to reach the further injecting mold. In this way, a continuous process if obtained.
  • the number of the injecting molds In case a manufacture has to be obtained through injection, molding and subsequent melting of a determinate number of layers, the number of the injecting molds must be the same as the number of the layers. In case more cavities are obtained in the matrix, in at least the same number of said layers, it is possible to obtain a continuous process through which a finished manufacture is produced whenever a single layer is molded.
  • the temperature of each further layer is, in the injection phase, lower than the temperature of the layer, in the injection phase, molded before said further layer, the temperature of the injecting molds being regulated through a cooling circuit operating autonomously for each injecting mold.
  • an injection molding apparatus comprising a first die and a second die, said first die being provided with a plate which is movable and rotating in relation to said second die.
  • the apparatus is obtained to mold a manufacture through the injection and molding of subsequent layers continuously.
  • the injection molding apparatus may provide that the second die comprises a cooling circuit, adapted to independently cool each male impression.
  • the second die may comprise a cooling sector, positioned between the male impression, provided with the more protruding spherical bowl, and the male impression, provided with the less protruding spherical bowl so that once the manufacture is finished, it is cooled further on before being extracted since the manufacture goes in contact with said cooling sector.
  • the number of the female impressions may be the same as the number of the male impressions plus one, and the female impressions may be arranged so as to correspond to the male impressions and to the cooling sector.
  • Each female impression comprises perimetrically a movable ring nut, fixed on at least an actuator so that once the injection molding of all the layers has been ended and a finished manufacture has been obtained, the ring nut is made translate outwards through the actuator and the finished manufacture is extracted from the female impression.
  • the movable plate may comprise a cylindrical element, arranged in the middle of the face that is provided with the female impressions and on the side surface of which a guide is obtained and in which in the face of the second die having the male impressions, a cylindrical seat is obtained in the inner surface of which there is provided at least a pin which inserts in the guide which is shaped in such a way as to guide the movement of translation and rotation of the plate in a determinate way in respect to the second die.
  • Fig. 1 is an axonometric view of an apparatus according to the invention
  • Fig. 2, 3 are views of a first die and a second die, respectively;
  • Fig. 4 is an axonometric view of a first sector of the first die, namely, a plate that supports matrices;
  • Fig. 5 is an axonometric view of a second sector of the first die, namely, a plate that supports nozzles;
  • Fig. 6, 7 are front views of the second die and first die, respectively;
  • Fig. 8 is a side view along cross section A-A in Fig. 6;
  • Fig. 9 is a side view along cross section B-B in Fig. 6;
  • Fig. 10 is a side view along cross section C-C in Fig. 6;
  • Fig. 11 is a side view along cross section D-D in Fig. 6;
  • Fig. 12 is a side view along cross section E-E in Fig. 6;
  • Fig. 13 is a side view along cross section F-F in Fig. 6;
  • Fig. 14 is a side view along cross section G-G in Fig. 6.
  • reference number 10 denotes an apparatus to produce lenses in a plastic material through an injection molding process.
  • Apparatus 10 comprises a first die 11 and a second die 13. Said dies are arranged one before the other and comprise female matrices and male matrices. Said female matrices and male matrices beat the ones against the others and form a lens-shaped cavity.
  • the first die 11 represented in Fig. 2, comprises a first fixed plate 12, adapted to be fixed on the press of a molding plant according to the prior art.
  • a first matrices-holding plate 14 is connected with said fixed plate so as to rotate.
  • the first die 11 comprises a first ring 15 which is fixed on the first fixed plate 12 and is adapted to facilitate a possible shifting of the first die 11 itself.
  • the second die 13, represented in Fig. 3 comprises a second fixed plate 18, adapted to be fixed on the press of a molding plant according to the prior art.
  • a second matrices-holding plate 16 is fixed on said plate 18.
  • the second die 13 comprises a ring 17 which is fixed on the second matrices-holding plate 16 and is useful in the operations of displacement and removal of said die 13 from the plant.
  • the first fixed plate 12, the first matrices-holding plate 14, the second matrices-holding plate 16 and the second fixed plate 18 have a prismatic shape with octagonal base.
  • the first matrices-holding plate 14 comprises eight female matrices showing the same shape and size, only one of them being represented with reference number 20 in Figures 2, 6.
  • the eight female matrices 20 are arranged in a circle and are equidistant from one another so that the centers of female matrices 20 are spaced from one another at an angle of 45°.
  • a cylindrical element 19 is fixed centrally on the same face of the matrices- holding plate 14 comprising the eight female matrices 20.
  • a guide 23 is obtained on the side surface of the cylindrical element 19.
  • Eight conical female centering element 21 are obtained on the same face and are arranged along the perimeter at the same angular distance, namely, 45° from one another.
  • a conditioning system 5 according to the prior art is obtained in the first matrices-holding plate 14 to control the temperature of the female matrices 20.
  • the second matrices-holding plate 16 comprises seven male matrices 31 , 32, 33, 34, 35, 36, 37 on the face beating the first matrices-holding plate, said male matrices being different from one another, as well as an eighth cooling sector 38.
  • a cylindrical hole 4 is obtained in the middle and is delimited perimetrically by a cylindrical crown 24 in the inside of which eight pegs 25 protrude and are arranged at the same distance from one another.
  • the pegs 25 may move in the inside of the guide 23 obtained in the cylindrical element 19 so as to guide the rotation and the translation between the two dies 1 1 , 13.
  • the face of the second matrices-holding plate 16 with the seven male matrices comprises four male conical elements 60 arranged along the perimeter at the same angular distance, namely, 90° from one another.
  • a cooling system is obtained in the second matrices-holding plate 16, as well.
  • the cooling system is indicated with the only reference number 22 but it comprises independent channels for each male matrix in order to autonomously control the temperatures of the male matrices.
  • Each male matrix comprises and injection point in the middle of the impression.
  • the injection point is connected with a respective nozzle 29.
  • the second fixed plate 8 comprises seven injectors 29, connected with each other, and a stellar distributor 39 which in turn is connected with a hot chamber.
  • Seven holes 26 are obtained in the second matrices-holding plate 16 so as to allow the tips of the nozzles 29 to beat against the injection point of each male matrix.
  • the first matrices-holding plate comprises eight equal female matrices 20.
  • Each female matrix 20 comprises a female impression 30 which is fixed on the plate 14 and in which a cavity 59, shaped like a spherical bowl, is obtained.
  • a ring nut 40 is arranged along the female impression 30 and translates in respect to the impression 30 by means of three actuators 49.
  • the aforesaid reference numbers denote only the elements of a female matrix but it is to be intended that the same reference numbers denote the same elements of the other seven female matrices, as well.
  • the second matrices-holding plate 16 comprises the seven male matrices and the cooling sector 38.
  • the first male matrix 31 comprises a male impression 51 from which a spherical bowl 41 protrudes, the diameter of this bowl being slightly shorter than the cavity 59.
  • the second male matrix 32 comprises a male impression 52 from which a spherical bowl 42 protrudes, the diameter of this bowl being slightly shorter than the spherical bowl 41.
  • the third male matrix 33 comprises a male impression 53 from which a spherical bowl 43 protrudes, the diameter of this bowl being slightly shorter than the spherical bowl 42.
  • the fourth male matrix 34 comprises a male impression 54 from which a spherical bowl 44 protrudes, the diameter of this bowl being slightly shorter than the spherical bowl 43.
  • the fifth male matrix 35 comprises a male impression 55 from which a spherical bowl 45 protrudes, the diameter of this bowl being slightly shorter than the spherical bowl 44.
  • the sixth male matrix 36 comprises a male impression 56 from which a spherical bowl 46 protrudes, the diameter of this bowl being slightly shorter than the spherical bowl 45.
  • the seventh male matrix 37 comprises a male impression 57 which, unlike the other impressions, does not have any protruding element.
  • the sector 38 comprises a simple circular element which is subject to the action of suitable channels that are connected with the cooling circuit.
  • the apparatus 10 allows to mold, through injection, seven layers of lens in succession with a rotation of the first matrices- holding plate 14 in respect to the second matrices-holding plate 16.
  • the temperatures and times of each of the seven injection phases allow a fusion of the layers that form an only homogeneous body. This is obtained at higher cooling speeds than that of the solidification of a lens obtained through molding in an only phase of injection molding.
  • a female impression 30 the cavity of which is completely empty, is arranged in front of the first male impression 51 from which the spherical bowl 41 protrudes.
  • a melted thermoplastic material goes out of the nozzle 29, namely, from the central injection point of the spherical bowl 41 so as to completely fill the empty space between the male impression 51 and the female impression 30 and to form a first layer 61 of lens.
  • Said first layer 61 is slightly cooled by the conditioning and cooling circuit so as to reach a satisfying status of solidification.
  • the first movable matrices-holding plate 14 is translated so as to move away from the second fixed matrices-holding plate 16; then, the same plate 14 is rotated 45° and approached to the plate 16 so that the female impression 30, on which the first layer 61 is placed, is in front of and beats against the second male impression 52, as it appears from Figure 9.
  • thermoplastic material goes out of the nozzle 29, namely, from the central injection point of the spherical bowl 42 so as to completely fill the empty space between the first layer 61 and the male impression 52 and to form a second layer 62 of lens.
  • the temperatures of the first layer 61 and second layer 62 are such to fuse the same layers into an only homogeneous layer 71.
  • the molding process goes on with further phases as the above one.
  • the first movable matrices-holding plate 14 is translated again so as to move away from the second fixed matrices-holding plate 16; then, the same plate 14 is rotated 45° and approached to the plate 16 so that the female impression 30, on which the homogeneous layer 71 is placed, is in front of and beats against the third male impression 53, as it appears from Figure 10.
  • thermoplastic material goes out of the nozzle 29, namely, from the central injection point of the spherical bowl 43 so as to completely fill the empty space between the homogeneous layer 71 of lens and the male impression 53 and to form a third layer 71 of lens.
  • the temperatures of the homogeneous layer 71 and third layer 63 are such to fuse the same layers in an only homogeneous layer 72. Besides, the temperatures of the male impression 53 are regulated in such a way as to lower the temperature of the homogeneous layer 72 and to accelerate its solidification.
  • the first movable matrices-holding plate 14 is translated again so as to move away from the second fixed matrices-holding plate 16; then, the same plate is rotated 45° and approached to the plate 16 so that the female impression 30, on which the homogeneous layer 72 is placed, is in front of and beats against the fourth male impression 54, as it appears from Figure 1 1.
  • a melted thermoplastic material goes out of the nozzle 29, namely, from the central injection point of the spherical bowl 44 so as to completely fill the empty space between the homogeneous layer 72 of lens and the male impression 54 and to form a fourth layer 64 of lens.
  • the temperatures of the homogeneous layer 72 and fourth layer 64 are such to fuse the same layers in an only homogeneous layer 73.
  • the temperatures of the male impression 54 are regulated in such a way as to further lower the temperature of the homogeneous layer 73 and to accelerate its solidification.
  • the first movable matrices-holding plate 14 is translated again so as to move away from the second fixed matrices-holding plate 16; then, the same plate 14 is rotated 45° and approached to the plate 16 so that the female impression 30, on which the homogeneous layer 73 is placed, is in front of and beats against the fifth male impression 55, as it appears from Figure 12.
  • a melted thermoplastic material goes out of the nozzle 29, namely, from the central injection point of the spherical bowl 45, so as to completely fill the empty space between the homogeneous layer 73 of lens and the male impression 55 and to form a fifth layer 65 of lens.
  • the temperatures of the homogeneous layer 73 and fifth layer 65 are such to fuse the same layers in an only homogeneous layer 74. Besides, the temperatures of the male impression 55 are regulated in such a way as to further lower the temperature of the homogeneous layer 74 and to accelerate its solidification.
  • the first movable matrices-holding plate 14 is translated again so as to move away from the second fixed matrices-holding plate 16; then, the same plate 14 is rotated 45° and approached to the plate 16 so that the female impression 30, on which the homologous layer 74 is placed, is in front of and beats against the sixth male impression 56, as it appears from Figure 13.
  • a melted thermoplastic material goes out of the nozzle 29, namely, from the central injection point of the spherical bowl 46, so as to completely fill the empty space between the homogeneous layer 74 of lens and the male impression 56 and to form a sixth layer 66 of lens.
  • the temperatures of the homogeneous layer 74 and sixth layer 66 are such to fuse the same layers in an only homogeneous layer 75. Besides, the temperatures of the male impression 56 are regulated in such a way as to further lower the temperature of the homogeneous layer 75 and to accelerate its solidification.
  • the first movable matrices-holding plate 14 is translated again so as to move away from the second fixed matrices-holding plate 16; then, the same plate 14 is rotated 45° and approached to the plate 16 so that the female impression 30, on which the homologous layer 75 is placed, is in front of and beats against the seventh male impression 57, as it appears from Figure 14.
  • thermoplastic material goes out of the nozzle, namely, from the central injection point of the spherical bowl 47, so as to completely fill the space between the homogeneous layer 75 of lens and the male impression 57 and to form a seventh layer 67 of lens.
  • the temperatures of the homogeneous layer 75 and seventh layer 67 are such to fuse the same layers in an only homogeneous body, namely, the lens. Besides, the temperatures of the male impression 57 are regulated in such a way as to further lower the temperature of the so-obtained lens and to accelerate its solidification.
  • the cooling and solidification are further facilitated by the last translation and rotation of 45° of the movable plate 14 in respect to the fixed plate 16. In this way, the lens is positioned so as to beat with the cooling sector 38.
  • the lens is extracted from the female impression 30 by actuating the three actuators 49 which push the ring nut 40 towards the outside.
  • the finished lens is collected and is ready for the use.
  • the process is continuous and once the first male impression 51 has injected and molded the first layer and the female impression 30 has moved away with the first layer 61 , the same first male impression 51 is operating again and injects and molds a new first layer 61 in the female impression 30 which is now free from the finished lens.
  • each male impression 51 , 52, 53, 54, 55, 56, 57, which injects the melted thermoplastic material remains constant as the movable part of the mold rotates, namely, the movable part of the first matrices-holding plate 14.
  • the first plate 14 always puts the same volume of the material to be injected.
  • the invention has been described according to a form in which the manufacture, namely, a lens, is obtained in an injection molding process in which seven layers are molded through injection, said layers being overlapped and homogeneous.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Apparatuses And Processes For Manufacturing Resistors (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

L'invention concerne un processus de moulage par injection et un appareil associé, le procédé comportant les étapes suivantes : - moulage par injection d'une première couche de matière plastique fondue dans la cavité d'une matrice en employant un premier moule à injection comportant un premier secteur comprimant ladite première couche ; - moulage par injection d'une couche supplémentaire de matière plastique fondue sur la couche moulée auparavant en employant un moule supplémentaire à injection comportant un secteur supplémentaire comprimant ladite couche supplémentaire de telle sorte que ladite couche supplémentaire fusionne avec la couche moulée auparavant de façon à obtenir une couche unique ; - refroidir ladite couche unique de façon à obtenir un produit fini ; - extraction du produit ainsi obtenu de la cavité de la matrice.
EP10768572A 2009-11-23 2010-09-27 Processus de moulage par injection d'un élément et appareil pour mettre en uvre ledit processus Withdrawn EP2504142A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITVR2009A000199A IT1397037B1 (it) 2009-11-23 2009-11-23 Procedimento di stampaggio a iniezione di un elemento ed apparecchiatura per la realizzazione di detto procedimento
PCT/IB2010/054345 WO2011061638A1 (fr) 2009-11-23 2010-09-27 Processus de moulage par injection d'un élément et appareil pour mettre en œuvre ledit processus

Publications (1)

Publication Number Publication Date
EP2504142A1 true EP2504142A1 (fr) 2012-10-03

Family

ID=42237092

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10768572A Withdrawn EP2504142A1 (fr) 2009-11-23 2010-09-27 Processus de moulage par injection d'un élément et appareil pour mettre en uvre ledit processus

Country Status (3)

Country Link
EP (1) EP2504142A1 (fr)
IT (1) IT1397037B1 (fr)
WO (1) WO2011061638A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8891171B2 (en) 2010-02-01 2014-11-18 Dbm Reflex Enterprises Inc. High sag thick lens for use in an illumination apparatus
WO2012111381A1 (fr) * 2011-02-18 2012-08-23 南部化成株式会社 Machine de moulage par injection rotative pour article moulé multicouches, procédé pour le moulage d'un article moulé multicouches et article moulé multicouches
DE102012205196A1 (de) * 2012-03-30 2013-10-02 Sumitomo (Shi) Demag Plastics Machinery Gmbh Spritzgießmaschine zur Herstellung von mehrschichtigen Kunststoff-Formteilen aus einem einheitlichen thermoplastischen Kunststoff sowie entsprechendes Herstellungsverfahren
DE112014003601T5 (de) 2013-08-05 2016-06-02 Dbm Reflex Enterprises Inc. Spritzgegossene dicke Linse
DE102014018495A1 (de) * 2014-12-16 2016-06-16 Gebr. Krallmann Gmbh Verfahren zur Herstellung einer mehrschichtigen Kunststoff-Linse
CN114179309A (zh) * 2022-01-10 2022-03-15 华域视觉科技(上海)有限公司 透镜产品用压板抽芯机构

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6468458B1 (en) * 1998-10-23 2002-10-22 Textron Automotive Company Inc, Method for forming a composite product
JP2001191365A (ja) * 2000-01-14 2001-07-17 Stanley Electric Co Ltd 樹脂厚肉レンズ及びその形成方法
DE10204806A1 (de) * 2002-02-06 2003-08-14 Wgb Werkzeug Und Geraetebau Kl Verfahren zur Herstellung dickwandiger Kunststoffteile
DE102005053979A1 (de) * 2005-11-11 2007-05-24 Wilhelm Weber Gmbh & Co. Kg Verfahren und Kunststoffspritzvorrichtung zur Herstellung eines Lichtleitkörpers
FR2909302B1 (fr) * 2006-12-01 2012-03-23 Mino Gaillard Sndg Procede de realisation de pots massifs par injection de matieres plastiques
AR066123A1 (es) * 2007-04-18 2009-07-22 Advanced Plastics Technologies Metodos y sistemas para conformar articulos multicapa

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011061638A1 *

Also Published As

Publication number Publication date
IT1397037B1 (it) 2012-12-20
ITVR20090199A1 (it) 2011-05-24
WO2011061638A1 (fr) 2011-05-26

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