AT393991B - DEVICE FOR MANUFACTURING OBJECTS FROM THERMOPLASTIC, VERY POLLUTED PLASTIC RECYCLING PLASTIC - Google Patents

DEVICE FOR MANUFACTURING OBJECTS FROM THERMOPLASTIC, VERY POLLUTED PLASTIC RECYCLING PLASTIC Download PDF

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Publication number
AT393991B
AT393991B AT0204387A AT204387A AT393991B AT 393991 B AT393991 B AT 393991B AT 0204387 A AT0204387 A AT 0204387A AT 204387 A AT204387 A AT 204387A AT 393991 B AT393991 B AT 393991B
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AT
Austria
Prior art keywords
mold
mass
plastic
thermoplastic
carrier plate
Prior art date
Application number
AT0204387A
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German (de)
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ATA204387A (en
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Spiess Kunststoff Recycling
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Publication of ATA204387A publication Critical patent/ATA204387A/en
Application granted granted Critical
Publication of AT393991B publication Critical patent/AT393991B/en

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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
    • 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
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/0026—Recovery of plastics or other constituents of waste material containing plastics by agglomeration or compacting
    • 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
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/56—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding
    • B29C45/568—Applying vibrations to the 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
    • 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
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/58—Details
    • B29C45/585—Vibration means for the injection unit or parts thereof
    • 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
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/004—Shaping under special conditions
    • B29C2791/008—Using vibrations during moulding
    • 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
    • B29K2105/26—Scrap or recycled material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Description

AT 393 991 BAT 393 991 B

Die Erfindung bezieht sich auf eine Vorrichtung zum Herstellen von Gegenständen aus thermoplastischem, stark verunreinigtem Recycling-Kunststoff, mit einer Formträgerplatte, einer an dieser angeschlossenen Vakuumpumpe und mit einer Trägraplatte für die Massezylinder.The invention relates to a device for producing objects from thermoplastic, highly contaminated recycled plastic, with a mold carrier plate, a vacuum pump connected to it and with a carrier plate for the mass cylinder.

Es ist bereits bekannt (DE-AS 1 188 794 und DE-AS 1 196 853), eine Spritzgießform im Teilungsbereich entsprechend abzudichten, um in ihr anschließend ein Vakuum zu erzeugen. Dies geschieht in der Regel in der Weise, daß Gummimanschetten angeordnet sind, die sich beim Schließen der Form dichtend gegeneinander legen. Ferner ist es bekannt (DE-AS 1 248 276), dem statischen Einspritzdruck durch Vibrieren einen hochfrequenten Wechseldruck zu überlagern. Diese Maßnahmen reichen aber nicht aus, großvolumige Spritzgießformen voll auszufüllen. Schließlich sind ein Verfahren und eine Vorrichtung zur Herstellung dichter Formkörper aus plastischen Massen durch Vibration bekannt (DE-OS 2 350 286). Hiebei wird die in einem Formkasten befindliche Masse durch einen Vibrator in Vertikalschwingungen versetzt und durch ein auf die Masse aufliegendes schweres Deckgewicht ein Gegenimpuls in horizontaler Richtung erzeugt. Eine derartige Anordnung ist aber für eine Massenproduktion nicht brauchbar.It is already known (DE-AS 1 188 794 and DE-AS 1 196 853) to appropriately seal an injection mold in the division area in order to subsequently create a vacuum in it. This usually happens in such a way that rubber sleeves are arranged, which seal against each other when the mold is closed. Furthermore, it is known (DE-AS 1 248 276) to superimpose a high-frequency alternating pressure on the static injection pressure by vibration. However, these measures are not sufficient to fully fill large-volume injection molds. Finally, a method and a device for producing dense moldings from plastic masses by vibration are known (DE-OS 2 350 286). The mass in a molding box is set into vertical vibrations by a vibrator and a counter impulse in the horizontal direction is generated by a heavy covering weight resting on the mass. However, such an arrangement is not suitable for mass production.

Aufgabe der Erfindung ist es, auch Formen mit größerer Flächenausdehnung mit stark verunreinigtem Kunststoff, der eventuell mit nicht thermoplastischen Füllstoffen stark durchsetzt sein kann, vollkommen auszufüllen, ohne daß beim Erkalten Verspannungen entstehen.The object of the invention is to completely fill molds with a larger surface area with heavily contaminated plastic, which may be heavily permeated with non-thermoplastic fillers, without causing tension when cooling.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Form mittels der Vakuumpumpe ständig unter Vakuum gehalten ist, die Formträgerplatte durch schwingungserzeugende Elemente definiert bewegbar ist, die Kolben separat oberhalb der Massezylinder angeordnet sind und die Kolben beim Eindrücken der Masse in die Form in den Massezylindem definiert sägezahnartig bewegbar sind.This object is achieved in that the mold is kept constantly under vacuum by means of the vacuum pump, the mold carrier plate can be moved in a defined manner by vibration-generating elements, the pistons are arranged separately above the mass cylinder and the piston is defined when the mass is pressed into the mold in the mass cylinder are sawtooth-like movable.

Das in einem Walzenextruder oder Knetwerk homogenisierte und auf thermoplastische Temperatur gebrachte Recycling-Material wird in einen oder mehrere Massezylinder eingefüllt und durch leichten Druck mittels Kolben durch verhältnismäßig große Einfüllöffnungen in die unter Unterdrück stehende Form eingebracht. Dadurch wird erreicht, daß auch zähflüssiges und stark verunreinigtes Recycling-Material großflächige Formen vollkommen ausfüllen kann. Dabei lassen die mittels einer Vakuumpumpe ständig unter Vakuum gehaltene Form, die durch schwingungserzeugende Elemente definiert bewegt wird, und die separat oberhalb der Massezylinder angeordneten Kolben, die beim Eindrücken der Masse in die Form in den Massezylindem ebenfalls definiert bewegbar sind, eine Massenfertigung zu.The recycling material, which is homogenized in a roller extruder or kneader and brought to thermoplastic temperature, is filled into one or more mass cylinders and introduced into the suppressed mold by means of light pressure by means of pistons through relatively large filling openings. This ensures that viscous and heavily contaminated recycling material can completely fill out large-area molds. The mold, which is constantly kept under vacuum by means of a vacuum pump and which is moved in a defined manner by vibration-generating elements, and the pistons which are arranged separately above the mass cylinder and which can also be moved in a defined manner when the mass is pressed into the mold in the mass cylinder allow mass production.

Erfindungsgemäß können die Massezylinder und die Schmelzeinlaßöffnung durch Heizelemente zusätzlich beheizbar sein. Durch die Heizung der Massezylinder und der Schmelzeinlaßöffhungen wird in Verbindung mit der Schwingbewegung, insbesondere durch die Massenträgheit, die sich bei den Schwingbewegungen ergibt, der Fließvorgang wesentlich beschleunigt. Damit gelingt es, bisher nicht durchführbare Formungen vorzunehmen, und es läßt sich stark verschmutztes Plastikmaterial, wie es z. B. im Hausmüll vorkommt, zu guten, formgerechten Teilen verarbeiten. Selbstverständlich können Schwingungen und Vakuum sich auch nur auf einen Teil des Einfüllvorganges oder auf ein bestimmtes Intervall desselben rastrecken.According to the invention, the mass cylinders and the melt inlet opening can be additionally heated by heating elements. The flow process is considerably accelerated by the heating of the mass cylinders and the melt inlet openings in connection with the oscillating movement, in particular by the inertia which results from the oscillating movements. This makes it possible to make formations that were previously not feasible, and it can be heavily soiled plastic material such as z. B. occurs in household waste, to good, conformal parts. Of course, vibrations and vacuum can only extend to a part of the filling process or to a certain interval of the same.

Anhand eines in der Zeichnung dargestellten Ausführungsbeispieles wird die Erfindung näher erläutert Es zeigen Fig. 1 eine Vorrichtung gemäß der Erfindung im Schaubild und Fig. 2 im QuerschnittThe invention is explained in more detail with reference to an exemplary embodiment shown in the drawing. FIG. 1 shows a device according to the invention in the diagram and FIG. 2 in cross section

Wie aus der Zeichnung zu ersehen ist wird eine Formentiägerplatte (1) durch entsprechende schwingungserzeugende Elemente (2 und 3) in vertikale und horizontale Schwingungen versetzt Die Formenträgerplatte (1) ist ferner mit Bohrungen (4a) durchsetzt die mit luftdurchlässigen Stopfen ausgefüllt sind. Diese an sich bekannten Stopfen lassen lediglich Luft hindurch, nicht aber fließfähigen Kunststoff. Dadurch ist es möglich, den Innenraum (5) einer Form (6) mittels einer angeschlossenen Vakuumpumpe (7) laufend zu evakuieren. Die auf der Formenplatte (1) befestigte Form (6) ist allseitig geschlossen und wird über die Bohrungen (4), die im Boden der Form (6) angeordnet sind, über die Formenträger (1) entlüftet. Die über die Form (6) vorgesehene Trägerplatte (8) trägt mindestens einen Massezylinder (9), der durch mindestens eine Zuleitung (10) mit aufgeschmolzener Recycling-Masse (11) gefüllt wird. Entsprechend der Anzahl der Massezylinder (9) sind oberhalb derselben Kolben (12) angeordnet, welche bei Betätigung die aufgeschmolzene Recycling-Masse (11) durch die in der Form (6) vorgesehenen Öffnungen (13) entleeren. Die Kolben (12) können gleichfalls mittels nicht dargestellten Schwingungserzeuger in sägezahnähnliche Schwingungen versetzt werden.As can be seen from the drawing, a mold carrier plate (1) is set into vertical and horizontal vibrations by corresponding vibration-generating elements (2 and 3). The mold carrier plate (1) is also penetrated with bores (4a) which are filled with air-permeable plugs. These plugs known per se only allow air to pass through, but not flowable plastic. This makes it possible to continuously evacuate the interior (5) of a mold (6) by means of a connected vacuum pump (7). The mold (6) fastened on the mold plate (1) is closed on all sides and is vented via the bores (4), which are arranged in the bottom of the mold (6), via the mold carrier (1). The carrier plate (8) provided over the mold (6) carries at least one mass cylinder (9) which is filled with melted recycling mass (11) through at least one feed line (10). Corresponding to the number of mass cylinders (9), pistons (12) are arranged above the same, which, when actuated, empty the melted recycling mass (11) through the openings (13) provided in the mold (6). The pistons (12) can also be set into sawtooth-like vibrations by means of a vibration generator (not shown).

Die Massezylinder-Ausmündungen sind von Heizelementen (15) umgeben, um die in den Massezylindem (9) befindliche Recycling-Masse (11) temperiert zu halten. Die in vertikale und gegebenenfalls auch horizontale oder bei Bedarf in Schwingungen nach allen Richtungen bewegten Kolben (12) drücken die aufgeschmolzene Recycling-Masse (11) unter leichtem Druck durch die Öffnungen (13) in die Form (6). Die auf die gesamte Vorrichtung einwirkenden Schwingungen begünstigen ein Ausrichten der Moleküle beim Fließvorgang und beim Ausfüllen der Form (6). Dadurch wird nicht nur die Taktzeit weitgehend verkürzt, sondern es werden auch die beim einfachen Verpressen im Material eingebauten bzw. eingelagerten Spannungen beseitigt, d. h„ die einer Form (6) entnommenen, noch heißen Gegenstände bleiben auch nach dem Erkalten formgetreu. Die Schwingbewegungen und die Evakuierung der Form (6) kann während eines Arbeitsganges auch in Intervallen erfolgen. -2-The mass cylinder orifices are surrounded by heating elements (15) in order to keep the recycling mass (11) in the mass cylinders (9) temperature-controlled. The pistons (12), which are moved in vertical and optionally also horizontal or, if necessary, vibrate in all directions, press the melted recycling mass (11) into the mold (6) under slight pressure through the openings (13). The vibrations acting on the entire device favor alignment of the molecules during the flow process and when filling the mold (6). This not only shortens the cycle time to a large extent, but also removes the stresses built into or embedded in the material during simple pressing, i.e. h “The hot objects removed from a mold (6) remain true to shape even after cooling. The oscillating movements and the evacuation of the mold (6) can also take place at intervals during a work cycle. -2-

Claims (2)

AT 393 991B PATENTANSPRÜCHE 5 1. Vorrichtung zum Herstellen von Gegenständen aus thermoplastischem, stark verunreinigtem Recycling-Kunst-10 Stoff, mit einer Formträgerplatte, einer an dieser angeschlossenen Vakuumpumpe und mit einer Trägerplatte für die Massezylinder, dadurch gekennzeichnet, daß die Form (6) mittels der Vakuumpumpe (7) ständig unter Vakuum gehalten ist, die Formträgerplatte (1) durch schwingungserzeugende Elemente (2,3) definiert beweg· bar ist, die Kolben (12) separat oberhalb der Massezylinder (9) angeordnet sind und die Kolben (12) beim Eindrücken der Masse in die Form (6) in den Massezylindem (9) definiert sägezahnartig bewegbar sind. 15AT 393 991B PATENT CLAIMS 5 1. Device for producing objects from thermoplastic, highly contaminated recycled synthetic material, with a mold carrier plate, a vacuum pump connected to it and with a carrier plate for the mass cylinder, characterized in that the mold (6) is constantly kept under vacuum by means of the vacuum pump (7), the mold carrier plate (1) can be moved in a defined manner by vibration-generating elements (2, 3), the pistons (12) are arranged separately above the mass cylinders (9) and the pistons (12 ) when pressing the mass into the mold (6) in the mass cylinder (9) are defined sawtooth-like movable. 15 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Massezylinder (9) und die Schmelzeinlaßöffnung (13) durch Heizelemente (15) zusätzlich beheizbar sind. Hiezu 1 Blatt Zeichnung 202. Device according to claim 1, characterized in that the mass cylinder (9) and the melt inlet opening (13) can be additionally heated by heating elements (15). For this purpose 1 sheet of drawing 20
AT0204387A 1987-05-25 1987-08-13 DEVICE FOR MANUFACTURING OBJECTS FROM THERMOPLASTIC, VERY POLLUTED PLASTIC RECYCLING PLASTIC AT393991B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19873717609 DE3717609A1 (en) 1987-05-25 1987-05-25 Suction moulding process for the production of articles from highly contaminated recycled thermoplastics

Publications (2)

Publication Number Publication Date
ATA204387A ATA204387A (en) 1991-07-15
AT393991B true AT393991B (en) 1992-01-10

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AT0204387A AT393991B (en) 1987-05-25 1987-08-13 DEVICE FOR MANUFACTURING OBJECTS FROM THERMOPLASTIC, VERY POLLUTED PLASTIC RECYCLING PLASTIC

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AT (1) AT393991B (en)
DE (1) DE3717609A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2070987T3 (en) * 1990-01-10 1995-06-16 Phoenix Ag PROCEDURE FOR THE RECYCLING OF WASTE OR GOODS OF SOME USED ITEMS MADE OF PLASTIC MATERIAL, ESPECIALLY POLYURETHANE OR POLYUREA.
US5240656A (en) * 1991-05-21 1993-08-31 Plastics Densification, Inc. Treatment of waste
US5217655A (en) * 1991-07-09 1993-06-08 Envirotrust Technologies Inc. Methods for preparation of composite materials
DE4211768C2 (en) * 1992-04-08 1994-05-11 Spiess Kunststoff Recycling Method and device for the automatic production of objects of high surface quality from recycled plastic
FR2692825B1 (en) * 1992-06-26 1995-03-10 Sundgau Sarl Atelier Const Ele Method and machine for compacting waste containing thermoplastic materials.
WO1996014196A1 (en) * 1994-11-04 1996-05-17 Andrew James Wytkin Multilayer mould apparatus and method
DE19926319B4 (en) * 1998-10-28 2005-08-18 Lothar Stemke metering
GR1003913B (en) * 1999-11-17 2002-06-25 Resin transportation melting with the assistance of oscillations
DE10052841A1 (en) * 2000-10-24 2002-04-25 Keim Hans Joachim Thermoplastic melt processing For injection molding meltable materials involves vibration or pulsation of melt flows to eliminate poor weld lines at melt flow contact points

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1188794B (en) * 1962-05-02 1965-03-11 Leybolds Nachfolger E Device for a plastic injection molding machine
DE1196853B (en) * 1962-08-24 1965-07-15 Leybolds Nachfolger E Device for generating a vacuum in the mold of an injection molding machine
DE1248276B (en) * 1961-11-10 1967-08-24 Fischer Ag Georg Injection mold for processing thermoplastic masses
DE2350286A1 (en) * 1973-10-06 1975-04-24 Vaw Ver Aluminium Werke Ag Vibration moulding of dense plastics articles - by exposing plastics mass to vibration in vertical and horizontal planes simultaneously

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1248276B (en) * 1961-11-10 1967-08-24 Fischer Ag Georg Injection mold for processing thermoplastic masses
DE1188794B (en) * 1962-05-02 1965-03-11 Leybolds Nachfolger E Device for a plastic injection molding machine
DE1196853B (en) * 1962-08-24 1965-07-15 Leybolds Nachfolger E Device for generating a vacuum in the mold of an injection molding machine
DE2350286A1 (en) * 1973-10-06 1975-04-24 Vaw Ver Aluminium Werke Ag Vibration moulding of dense plastics articles - by exposing plastics mass to vibration in vertical and horizontal planes simultaneously

Also Published As

Publication number Publication date
DE3717609A1 (en) 1988-12-15
DE3717609C2 (en) 1993-08-19
ATA204387A (en) 1991-07-15

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