EP0290582A1 - Verfahren und einrichtung zum herstellen eines gegenstandes durch einspritzgiessen in eine form mit nachbehandlung der eingespritzten masse - Google Patents

Verfahren und einrichtung zum herstellen eines gegenstandes durch einspritzgiessen in eine form mit nachbehandlung der eingespritzten masse

Info

Publication number
EP0290582A1
EP0290582A1 EP19880900020 EP88900020A EP0290582A1 EP 0290582 A1 EP0290582 A1 EP 0290582A1 EP 19880900020 EP19880900020 EP 19880900020 EP 88900020 A EP88900020 A EP 88900020A EP 0290582 A1 EP0290582 A1 EP 0290582A1
Authority
EP
European Patent Office
Prior art keywords
mold
injection
product
treatment
molds
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
Application number
EP19880900020
Other languages
English (en)
French (fr)
Inventor
Jean-Pierre Ibar
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.)
Solomat Partners LP
Original Assignee
Solomat Partners LP
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 Solomat Partners LP filed Critical Solomat Partners LP
Publication of EP0290582A1 publication Critical patent/EP0290582A1/de
Pending 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
    • B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
    • 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

Definitions

  • the present invention relates to a method and an installation for manufacturing a product by injecting material into a mold.
  • the molds can have a double function, first the function of giving the shape to the products and then that of constituting a heat exchanger to cool the material contained in the mold.
  • the quality of a product is, in general, all the better as the cooling takes place regularly and evenly throughout the thickness of the product so as to eliminate the internal constraints to the product.
  • the object of the present invention is to develop a method and an installation for manufacturing a product by injecting material into a mold making it possible to modify the properties of the material and, consequently, of the product, after injection and before demolding. so as to obtain a product having different characteristics and better than those which this product would have if it were molded according to conventional methods.
  • the invention relates to a method of the above type, characterized in that after the material has been injected into the mold, this material is subjected to a pressure, a frequency and a temperature which vary according to a determined program. to modify the physicochemical characteristics of the injected material, then when the material is demouldable, the product is removed from the mold.
  • the invention thus makes it possible to induce in the material of the product a history of cooling in order to modify and / or improve the characteristics of the product constituting the part.
  • the temperature of the mold before the implementation of the process is not necessarily the injection temperature; this temperature can be the starting temperature of the process, independent or not of the product temperature.
  • the mold is treated separately from the injection.
  • a mechanical vibration means is made to act on the mold and not on the material through the probe. This means is especially applicable for small molded parts while the probe is particularly suitable for large parts.
  • the method and the installation according to the invention make it possible to manufacture a product intended for high performance, or for reducing the quantity of material required to obtain properties similar to those obtained by conventional injection treatments.
  • the invention also relates to an installation for implementing the above method, characterized in that it consists of circulation equipment with a number of molds running past the injection device as well as a means allowing to induce in the material contained in each mold, a pressure and a frequency as well as a variable temperature according to a determined program between the end of the injection of the material in the mold and the exit of the mold.
  • the installation is constituted by a set of molds circulating continuously or step by step to pass in front of the injection device and cooperate with the means allowing the application of pressure and frequency and a variable temperatures according to a determined program
  • the set of circulating molds is constituted by a tray or carousel carrying the different molds to scroll them past the injection devices.
  • the treatment heads can each be associated with a particular mold or even be only in number corresponding to the trajectory corresponding to the duration of the treatment, these heads then returning directly while the molds pass through the different stations. opening of molds for extracting the cleaning, heating or cooling part before returning to the injection device.
  • FIG. 1 is a block diagram of the injection method of the invention
  • FIG. 2 is a diagram of an installation pou the implementation of the method.
  • the method of manufacturing a product by injecting a material into a mold consists in injecting (1) material in a mold, removing the mold from the injection nozzle and then subjecting (2) this material contained in the mold to a variable pressure, frequency and temperature according to a predetermined program to modify the physicochemical characteristics of the injected material and then to extract (3) the part from the mold and to be treated ⁇ ) the mold (reheating, cooling) before reinjecting (material into this mold.
  • FIG. 2 schematically shows an installation for implementing the method explained with the aid of FIG. 1.
  • the installation for manufacturing products by injecting material into a mold consists of a station d injection (10) with an inject nozzle (11) and a set of molds (101, 102 ... lOn ... lOn + and treatment heads (201, 202, 203 .20n and 20 n + intended to cooperate with the molds.
  • the sets of molds and treatment heads are associated in the installation.
  • the molds pass in front of the injector 10 to receive the quantity of material injected into the mold through the injection orifice (12) shown diagrammatically in the various molds.
  • Each mold (100 .... lOn, lOn + 1 ”) also has an orifice 13 for the establishment of the treatment head (201 ... 20n, 20n + 1).
  • This orifice 13 may be the injection orifice or one of the injection orifices or even a different orifice.
  • Each treatment head (201 ... 20n + 1) makes it possible to apply a variable pressure and temperature and frequency to the material contained in the mold, evolving according to a predetermined program.
  • Each treatment head is associated with a mold at least for the duration of the treatment, which corresponds to the part of the path of the mold on its circuit path.
  • the treatment head is not connected to the corresponding mold (as shown diagrammatically by the line 1 * 0, once the injection has ended and not during injection.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
EP19880900020 1986-12-02 1987-11-30 Verfahren und einrichtung zum herstellen eines gegenstandes durch einspritzgiessen in eine form mit nachbehandlung der eingespritzten masse Pending EP0290582A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8616835A FR2607430B1 (fr) 1986-12-02 1986-12-02 Procede et installation de fabrication d'un produit par injection de matiere dans un moule avec traitement de la matiere injectee
FR8616835 1986-12-02

Publications (1)

Publication Number Publication Date
EP0290582A1 true EP0290582A1 (de) 1988-11-17

Family

ID=9341469

Family Applications (2)

Application Number Title Priority Date Filing Date
EP19880900020 Pending EP0290582A1 (de) 1986-12-02 1987-11-30 Verfahren und einrichtung zum herstellen eines gegenstandes durch einspritzgiessen in eine form mit nachbehandlung der eingespritzten masse
EP19870403000 Expired - Lifetime EP0273830B1 (de) 1986-12-02 1987-11-30 Verfahren und Einrichtung zum Herstellen eines Gegenstandes durch Spritzgiessen in eine Form mit Nachbehandlung der eingespritzten Materie

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP19870403000 Expired - Lifetime EP0273830B1 (de) 1986-12-02 1987-11-30 Verfahren und Einrichtung zum Herstellen eines Gegenstandes durch Spritzgiessen in eine Form mit Nachbehandlung der eingespritzten Materie

Country Status (6)

Country Link
EP (2) EP0290582A1 (de)
CA (1) CA1313840C (de)
DE (1) DE3771467D1 (de)
ES (1) ES2023668B3 (de)
FR (1) FR2607430B1 (de)
WO (1) WO1988004226A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5885495A (en) 1996-12-19 1999-03-23 Ibar; Jean-Pierre Viscosity control for molten plastics prior to molding
US8313051B2 (en) 2008-03-05 2012-11-20 Sealed Air Corporation (Us) Process and apparatus for mixing a polymer composition and composite polymers resulting therefrom

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE717122C (de) * 1939-03-11 1942-02-06 Siemens Schuckertwereke Ag Verfahren und Vorrichtung zum Herstellen von Formkoerpern aus plastischen Massen, insbesondere haertbaren Kunstharzen
FR1107651A (fr) * 1954-06-22 1956-01-04 Anciens Etablissements Mabille Perfectionnements aux pressoirs à fruits et essoreurs à membrane élastique gonflée par un fluide sous pression
US4288398A (en) * 1973-06-22 1981-09-08 Lemelson Jerome H Apparatus and method for controlling the internal structure of matter
FR1282215A (fr) * 1959-12-18 1962-01-19 Stamicarbon Dispositif et procédé pour exprimer du liquide à partir d'une matière à grain fin contenant du liquide, telle que les schlamms et analogues
FR1451655A (fr) * 1964-10-14 1966-01-07 G & J Weir Ltd Unité de filtrage et presse filtrante en comportant application
FR1432150A (fr) * 1965-04-23 1966-03-18 Installation-transfert, notamment table tournante automatique, pour le travail des matières thermoplastiques et du caoutchouc
GB1194676A (en) * 1966-06-29 1970-06-10 G & J Weir Ltd Filtering Press
DE2414819C3 (de) * 1974-03-27 1978-12-21 Richard 8051 Eching Herbst Verfahren zum Spritzgießen von warmformbaren Massen in einer durch Schwingungen beaufschlagten Spritzgießform
ZA756480B (en) * 1974-10-31 1977-01-26 Envirotech Corp Dewatering machine
IT1038671B (it) * 1975-06-04 1979-11-30 Sernagiotto Emilio Macchina per pressare materiali come ad esempio uva e vinaccia cosi da ricavare una massa liqut da che viene separata da quella solida
GB1515508A (en) * 1975-07-23 1978-06-28 Steetley Minerals Ltd Filtration apparatus
GB1582957A (en) * 1977-02-07 1981-01-21 English Clays Lovering Pochin Tube pressure filters
US4150079A (en) * 1977-08-22 1979-04-17 Owens-Illinois, Inc. Method for controlling crystallization in thermoplastic materials
US4219322A (en) * 1978-12-20 1980-08-26 Owens-Illinois, Inc. Apparatus for molding plastic articles
FR2451259A1 (fr) * 1979-03-14 1980-10-10 Ibar Jean Pierre Procede de moulage par vibration pour le controle des proprietes physiques des materiaux moules, notamment leurs proprietes mecaniques et optiques, machine permettant d'appliquer ledit procede et nouveaux materiaux obtenus
CA1243462A (en) * 1984-12-21 1988-10-25 Peter S. Allan Moulding process

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8804226A1 *

Also Published As

Publication number Publication date
EP0273830A3 (en) 1988-07-27
FR2607430B1 (fr) 1989-05-12
FR2607430A1 (fr) 1988-06-03
EP0273830A2 (de) 1988-07-06
ES2023668B3 (es) 1992-02-01
DE3771467D1 (de) 1991-08-22
EP0273830B1 (de) 1991-07-17
CA1313840C (fr) 1993-02-23
WO1988004226A1 (fr) 1988-06-16

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