DE1529947B1 - Device for carrying out a process for the production of plastic molded parts from several liquid plastic components that polymerize rapidly when mixed with heat - Google Patents
Device for carrying out a process for the production of plastic molded parts from several liquid plastic components that polymerize rapidly when mixed with heatInfo
- Publication number
- DE1529947B1 DE1529947B1 DE19651529947 DE1529947A DE1529947B1 DE 1529947 B1 DE1529947 B1 DE 1529947B1 DE 19651529947 DE19651529947 DE 19651529947 DE 1529947 A DE1529947 A DE 1529947A DE 1529947 B1 DE1529947 B1 DE 1529947B1
- Authority
- DE
- Germany
- Prior art keywords
- container
- injection
- dosing container
- plastic
- liquid
- 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.)
- Granted
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
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/462—Injection of preformed charges of material
-
- 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
- B29B11/00—Making preforms
- B29B11/04—Making preforms by assembling preformed material
-
- 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
- B29C31/00—Handling, e.g. feeding of the material to be shaped, storage of plastics material before moulding; Automation, i.e. automated handling lines in plastics processing plants, e.g. using manipulators or robots
- B29C31/04—Feeding of the material to be moulded, e.g. into a mould cavity
- B29C31/06—Feeding of the material to be moulded, e.g. into a mould cavity in measured doses, e.g. by weighting
- B29C31/065—Feeding of the material to be moulded, e.g. into a mould cavity in measured doses, e.g. by weighting using volumetric measuring chambers moving between a charging station and a discharge station
-
- 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
- B29C31/00—Handling, e.g. feeding of the material to be shaped, storage of plastics material before moulding; Automation, i.e. automated handling lines in plastics processing plants, e.g. using manipulators or robots
- B29C31/04—Feeding of the material to be moulded, e.g. into a mould cavity
- B29C31/06—Feeding of the material to be moulded, e.g. into a mould cavity in measured doses, e.g. by weighting
- B29C31/065—Feeding of the material to be moulded, e.g. into a mould cavity in measured doses, e.g. by weighting using volumetric measuring chambers moving between a charging station and a discharge station
- B29C31/066—Feeding of the material to be moulded, e.g. into a mould cavity in measured doses, e.g. by weighting using volumetric measuring chambers moving between a charging station and a discharge station using feed frames, e.g. for dry material
-
- 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
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/003—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor characterised by the choice of material
- B29C39/006—Monomers or prepolymers
-
- 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
- B29C45/18—Feeding the material into the injection moulding apparatus, i.e. feeding the non-plastified material into the injection unit
- B29C45/1816—Feeding auxiliary material, e.g. colouring material
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
- B29C2043/3676—Moulds for making articles of definite length, i.e. discrete articles moulds mounted on rotating supporting constuctions
- B29C2043/3689—Moulds for making articles of definite length, i.e. discrete articles moulds mounted on rotating supporting constuctions on a support table, e.g. flat disk-like tables having moulds on the periphery
-
- 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
- B29K2083/00—Use of polymers having silicon, with or without sulfur, nitrogen, oxygen, or carbon only, in the main chain, as moulding material
- B29K2083/005—LSR, i.e. liquid silicone rubbers, or derivatives thereof
-
- 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
- B29K2105/0002—Condition, form or state of moulded material or of the material to be shaped monomers or prepolymers
-
- 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
- B29K2105/25—Solid
- B29K2105/253—Preform
Description
Es zeigt Fig. 1 einen Senkrechtschnitt einer Vorrichtung zur Durchführung eines Verfahrens zum Herstellen von Kunststoff-Formteilen, F i g. 2 eine teilweise Ansicht der Vorrichtung nach Fig. 1, von oben.1 shows a vertical section of a device for implementation a process for the production of plastic molded parts, F i g. 2 is a partial view of the device according to FIG. 1, from above.
Das Formwerkzeug 1 weist eine Einspritzkammer 2 und einen Formhohlraum 3 auf. Ein Einspritzkolben 4 dient zum Hineindrücken der weichplastischen Kunststoff-Mischung in den Formhohlraum 3. The mold 1 has an injection chamber 2 and a mold cavity 3 on. An injection piston 4 is used to push in the soft plastic mixture into the mold cavity 3.
Der Einspritzkolben4 ist in vertikaler Richtung bewegbar und aus dem Formwerkzeug 1 bzw. aus der Einspritzkammer 2 vollständig herausziehbar. The injection piston 4 is movable in the vertical direction and is off the molding tool 1 or from the injection chamber 2 can be completely withdrawn.
Die Behälter zum Aufnehmen und Polymerisierenlassen der Kunststoff-Mischung sind an beiden Seiten offene zylindrische Dosierbehälter 5. Sie sind auf einem horizontalen Drehtisch 6 stehend gehalten, der z. B. mittels einer Schaltklinke 7 schrittweise fortschaltbar ist. Mit an sich bekannten, nicht dargestellten Mitteln ist die schrittweise Fortschaltung des Drehtisches 6 so regulierbar, daß die Zeit des Transportes der Dosierbehälter 5 von der Füllstelle I, an der in sie die Kunststoff-Komponenten gleichzeitig einfließen, bis zu der Stelle II, an der sie mit ihrer zum weichplastischen Rohling polymerisierten Kunststoff-Mischung zwischen das Formwerkzeug 1 und den aus ihm herausgezogenen Einspritzkolben 4 eingefahren sind, der jeweils gewünschten Polymerisationsdauer der Kunststoffmischung entspricht. The containers for holding and allowing the plastic mixture to polymerize are cylindrical dosing tanks open on both sides 5. They are on a horizontal one Turntable 6 held upright, the z. B. gradually by means of a pawl 7 is switchable. With means known per se, not shown, this is gradual Switching the turntable 6 adjustable so that the time of transport of the Dosing container 5 from the filling point I, at which the plastic components flow in at the same time, up to point II, where they become soft plastic Polymerized plastic mixture between the molding tool 1 and the blank are retracted from it pulled out injection plunger 4, each desired Polymerization time corresponds to the plastic mixture.
Die Stillstandzeiten des Drehtisches 6 sind in jedem Falle mindestens so groß bemessen, wie es zur Ausführung des Spritzvorganges und der Wiederzurücknahme des leeren Dosierbehälters 5 aus dem Raum zwischen dem Formwerkzeugl und dem in seine in Fig. 1 gezeigte Ausgangsstellung zurückgezogenen Einspritzkolben 4 erforderlich ist. The downtimes of the turntable 6 are at least in any case dimensioned as large as it is necessary for the execution of the injection process and the withdrawal of the empty dosing container 5 from the space between the molding tool and the in its initial position shown in Fig. 1 retracted injection piston 4 required is.
Die Lage der zylindrischen Dosierbehälter 5 auf dem Drehtisch 6 ist an den Aufsetzstationen 8, 9 durch auf dem Drehtisch 6 fest angeordnete Anschläge 8 eindeutig bestimmt. Ferner ist an jeder Aufsetzstation 8, 9 des Drehtisches 6 ein dem Umfang der Dosierbehälter 5 entsprechender Magnetring 9 angeordnet, der in die Oberfläche des Drehtisches 6 ein- gelassen ist und mit dieser bündig abschließt. Hierdurch werden die Dosierbehälter 5 in der durch die Anschläge 8 bestimmten Lage mit ihrem unteren Ende so dicht an die Oberfläche des Drehtisches 6 angedrückt gehalten, daß die an der FüllstelleI in sie flüssig eingebrachten Kunststoff-Komponenten nicht unten ausfließen können. The position of the cylindrical dosing container 5 on the turntable 6 is at the placement stations 8, 9 by means of stops fixedly arranged on the turntable 6 8 clearly determined. Furthermore, at each placement station 8, 9 of the turntable 6 a magnetic ring 9 corresponding to the circumference of the dosing container 5 is arranged, the into the surface of the turntable 6 is calm and is flush with this. As a result, the metering containers 5 are in the position determined by the stops 8 held with its lower end so tightly pressed against the surface of the turntable 6, that the plastic components brought into it in liquid form at the filling point I do not can flow out below.
An der mit II bezeichneten Stelle ist eine Schiebevorrichtung 10, 11 vorgesehen, die den dort mit dem weichplastisch gewordenen Kunststoff-Rohling ankommenden Dosierbehälter 5 unter Überwindung der Anzugkraft des Magnetringes 9 von dem Drehtisch 6 ab- und gegen eine Aufnahme 12 schiebt, die zwischen der Stirnfläche des in seiner Ausgangsstellung (Fig. 1) befindlichen, in vertikaler Richtung bewegbaren Einspritzkolbens 4 und der äußeren Stirnfläche der Einspritzkammer 2 des Formwerkzeugs 1 angeordnet ist. Bei dieser Stellung des Dosierbehälters 5 kann der Einspritzkolben 4 von unten her den weichplastischen Rohling aus dem Dosierbehälter 5 in die Einspritzkammer 2 ausschieben und den Spritzvorgang durchführen. At the point marked II is a sliding device 10, 11 is provided, which there with the plastic blank that has become soft incoming dosing container 5 while overcoming the attraction force of the magnetic ring 9 from the turntable 6 and pushes against a receptacle 12 between the end face of the in its starting position (Fig. 1), movable in the vertical direction Injection piston 4 and the outer end face of the injection chamber 2 of the mold 1 is arranged. In this position of the dosing container 5, the injection piston 4 from below the soft plastic blank from the dosing container 5 into the injection chamber 2 slide out and carry out the spraying process.
An der dem Einspritzkolben 4 zugewandten Außenfläche der Einspritzkammer 2 ist beim Ausführungsbeispiel ein Magnetring 5' vorgesehen. An diesen MagnetringS' wird der Dosierbehälter 5 mit seinem oberen Ende angedrückt, während der Einspritzkolben 4 seinen Arbeitshub ausführt. Beim Zurückziehen des Einspritzkolbens 4 in seine Ausgangsstellung hält der MagnetnngS' den Dosiergehälter 5 fest, so daß dieser im Wirkungsbereich der Schiebevorrichtung 10, 11 verbleibt. On the outer surface of the injection chamber facing the injection piston 4 2, a magnetic ring 5 'is provided in the exemplary embodiment. On this magnetic ring S ' the metering container 5 is pressed with its upper end, while the injection piston 4 executes its working stroke. When the injection plunger 4 is withdrawn into its The starting position holds the MagnetnngS 'the metering container 5 so that it is in the The range of action of the sliding device 10, 11 remains.
Die Schiebevorrichtung 10, 11 ist beim Ausführungsbeispiel hydraulisch betrieben und hat einen ein Greifwerkzeug 10 tragenden Antriebskolben 11. Das Greifwerkzeug 10, das den Dosierbehälter 5 nach beendetem Spritzvorgang wieder auf den Drehtisch 6 zurückholt, kann ein die Dosierbehälter 5 magnetisch oder zangenartig haltendes sein. The sliding device 10, 11 is hydraulic in the embodiment operated and has a gripping tool 10 carrying drive piston 11. The gripping tool 10, which puts the dosing container 5 back on the turntable after the injection process has ended 6 retrieves, the dosing container 5 can be held magnetically or in the manner of tongs be.
Claims (4)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEG0041167 | 1964-07-23 | ||
DEG0042880 | 1965-02-18 | ||
DEG0042880 | 1965-02-18 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE1529947B1 true DE1529947B1 (en) | 1972-09-14 |
DE1529947C2 DE1529947C2 (en) | 1976-06-16 |
Family
ID=
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB585403A (en) * | 1943-04-15 | 1947-02-06 | Howard Francis Macmillin | Improvements in and relating to injection molding machines |
DE890713C (en) * | 1953-08-13 | Dwoberg über DeImenihorst Hans Gunter Möller | Method and device for mixing the components of plastic foams | |
FR1279079A (en) * | 1960-02-19 | 1961-12-15 | Gelusema Anstalt | Thermosetting plastic injection machine with or without load |
FR1282249A (en) * | 1960-01-15 | 1962-01-19 | Josef Baer | Method and device for pressure casting molding resins |
GB911347A (en) * | 1960-02-23 | 1962-11-28 | Lucas Industries Ltd | Pellet forming apparatus |
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE890713C (en) * | 1953-08-13 | Dwoberg über DeImenihorst Hans Gunter Möller | Method and device for mixing the components of plastic foams | |
GB585403A (en) * | 1943-04-15 | 1947-02-06 | Howard Francis Macmillin | Improvements in and relating to injection molding machines |
FR1282249A (en) * | 1960-01-15 | 1962-01-19 | Josef Baer | Method and device for pressure casting molding resins |
FR1279079A (en) * | 1960-02-19 | 1961-12-15 | Gelusema Anstalt | Thermosetting plastic injection machine with or without load |
GB911347A (en) * | 1960-02-23 | 1962-11-28 | Lucas Industries Ltd | Pellet forming apparatus |
Also Published As
Publication number | Publication date |
---|---|
DE1529945B1 (en) | 1972-05-04 |
DE1529945C2 (en) | 1975-10-23 |
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