DE2038872C3 - Device for mixing several reactive liquid components to form a plastic, in particular polyurethane - Google Patents

Device for mixing several reactive liquid components to form a plastic, in particular polyurethane

Info

Publication number
DE2038872C3
DE2038872C3 DE19702038872 DE2038872A DE2038872C3 DE 2038872 C3 DE2038872 C3 DE 2038872C3 DE 19702038872 DE19702038872 DE 19702038872 DE 2038872 A DE2038872 A DE 2038872A DE 2038872 C3 DE2038872 C3 DE 2038872C3
Authority
DE
Germany
Prior art keywords
nozzle needle
plastic
liquid components
reactive liquid
several reactive
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.)
Expired
Application number
DE19702038872
Other languages
German (de)
Other versions
DE2038872A1 (en
DE2038872B2 (en
Inventor
Victor Laszlo 4033 Eggerscheidt Gebert
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19702038872 priority Critical patent/DE2038872C3/en
Publication of DE2038872A1 publication Critical patent/DE2038872A1/en
Publication of DE2038872B2 publication Critical patent/DE2038872B2/en
Application granted granted Critical
Publication of DE2038872C3 publication Critical patent/DE2038872C3/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B29B7/00—Mixing; Kneading
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/7404—Mixing devices specially adapted for foamable substances
    • B29B7/7409—Mixing devices specially adapted for foamable substances with supply of gas
    • B29B7/7428—Methodical aspects

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum Mischen mehrerer reaktionsfähiger flüssiger Komponenten zu einem Kunststoff, insbesondere Polyurethan, nach dem Oberbegriff des Patentanspruchs.The invention relates to an apparatus for mixing several reactive liquid components to a plastic, in particular polyurethane, according to the preamble of the claim.

Eine solche Vorrichtung ist Gegenstand des Hauptpatentes 20 23 071.Such a device is the subject of main patent 20 23 071.

Diese Vorrichtung ist dazu geeignet, beim Einspritzen der miteinander reagierenden Komponenten in die Mischkammer den Vor- oder Nachlauf einer Komponente zu verhindern, wobei die optimale Exaktheit nur bei der Vorlaufregelung erzielt wird.This device is suitable for injecting the components that react with one another into the Mixing chamber to prevent the pre- or post-run of a component, with the optimal accuracy only is achieved with the flow control.

Der Erfindung liegt die Aufgabe zugrunde, die Vorrichtung des Hauptpatents so zu verbessern und auszugestalten, daß sie eine optimale Regelung sowohl des Vorlaufes als auch des Nachlaufes der Komponenten erlaubt.The invention is based on the object of improving the device of the main patent so and to design that they provide optimal control of both the lead and the lag of the components permitted.

Diese Aufgabe wird nach der Erfindung durch die im kennzeichnenden Teil des Patentanspruchs angeführten Merkmale gelöst.According to the invention, this object is given by what is stated in the characterizing part of the patent claim Features solved.

Nach der Erfindung ist jeder Düsennadel eine Einrichtung zugeordnet, die auf die Düsennadel einen über den jeweiligen SchlicSdruck hinausgehenden zusätzlichen Druck ausüben kann. Die gleichzeitige Betätigbarkeit dieser Einrichtungen ermöglicht am Ende jedes Spritztakts ein schlagartiges und gleichzeitiges Schließen der Einspritzdüsen, wodurch der Nachlauf einer Komponente mit großer Exaktheit vermieden wird. Die Erfindung gewährleistet somit in Kombination mit der Vorrichtung des Hauptpatentes eine einfache und exakte Ausschaltung sowohl des Vor- als auch des Nachlaufes.According to the invention, a device is assigned to each nozzle needle, which one on the nozzle needle can exert additional pressure over and above the respective final pressure. The simultaneous Operability of these devices enables a sudden and simultaneous one at the end of each injection cycle Closing of the injection nozzles, whereby the after-run of a component is avoided with great accuracy will. The invention thus ensures, in combination with the device of the main patent, a simple one and exact deactivation of both the pre-run and the post-run.

Die Erfindung wird durch ein Ausführungsbeispiel an Hand der Zeichnung erläutert.The invention is explained by means of an exemplary embodiment on the basis of the drawing.

Die Düsennadel 1 wird durch eine Druckvorrichtung 2, die auf den Signalhebel 3 wirkt, zugedrückt. Die Einspritzdüsen 4 werden durch gleichzeitige Schaltung der ihnen zugeordneten Druckvorrichtungen 2 synchron betätigt (Schalter und elektrische Leitungen sind nicht gezeigt).The nozzle needle 1 is pressed shut by a pressure device 2 which acts on the signal lever 3. the Injection nozzles 4 are synchronized by simultaneous switching of the pressure devices 2 assigned to them operated (switches and electrical lines are not shown).

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims (1)

Patentanspruch:Claim: Vorrichtung zum Mischen mehrerer reaktionsfähiger flüssiger Komponenten zu einem Kunststoff, insbes. Polyurethan, mit einer Mischkammer und einer eine federbelastete Düsennadel aufweisenden Einspritzdüse für jede Komponente, mit einer Signaleinrichtung zum Feststellen des Ventilöffnungszeitpunktes und mit einer Einrichtung zum Einstellen des Öffnungszeitpunktes, wobei zum Einstellen des Öffnungszeitpunktes die Feder jeder Düsennadel einstellbar ist und die Signaleinrichtung aus einer jeder Einspritzdüse zugeordneten Signallampe besteht, die durch einen den Weg der Düsennadel vergrößernden Hebel betäligbar is··, nach Hauptpalent 2023071, dadurch gekennzeichnet, daß jeder Düsennadel (J) eine auf diese einen über den eingestellten Schließfederdruck hinausgehenden zusätzlichen Druck ausübende Einrichtung (2) zugeordnet ist, wobei sämtliche Einrichtungen gleichzeitig betätigbar sind.Device for mixing several reactive liquid components into a plastic, esp. Polyurethane, with a mixing chamber and a spring-loaded nozzle needle having Injection nozzle for each component, with a signaling device to determine when the valve is open and with a device for setting the opening time, wherein for setting the opening time, the spring each The nozzle needle is adjustable and the signaling device consists of a signal lamp assigned to each injection nozzle exists, which can be actuated by a lever that increases the travel of the nozzle needle, according to main palent 2023071, characterized in, that each nozzle needle (J) one on this one over the set closing spring pressure beyond additional pressure-exerting device (2) is assigned, with all Facilities can be operated at the same time. 1515th
DE19702038872 1970-08-05 1970-08-05 Device for mixing several reactive liquid components to form a plastic, in particular polyurethane Expired DE2038872C3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19702038872 DE2038872C3 (en) 1970-08-05 1970-08-05 Device for mixing several reactive liquid components to form a plastic, in particular polyurethane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702038872 DE2038872C3 (en) 1970-08-05 1970-08-05 Device for mixing several reactive liquid components to form a plastic, in particular polyurethane

Publications (3)

Publication Number Publication Date
DE2038872A1 DE2038872A1 (en) 1972-03-02
DE2038872B2 DE2038872B2 (en) 1977-02-24
DE2038872C3 true DE2038872C3 (en) 1978-12-14

Family

ID=5778902

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19702038872 Expired DE2038872C3 (en) 1970-08-05 1970-08-05 Device for mixing several reactive liquid components to form a plastic, in particular polyurethane

Country Status (1)

Country Link
DE (1) DE2038872C3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4150074A (en) * 1976-12-28 1979-04-17 The Upjohn Company Method of effecting multi-station in-place reaction injection molding all formable reactive polymeric resin composition

Also Published As

Publication number Publication date
DE2038872A1 (en) 1972-03-02
DE2038872B2 (en) 1977-02-24

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
EGZ Application of addition ceased through non-payment of annual fee of main patent