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DE3606542A1 - Internal mixer for plastic compositions - Google Patents

Internal mixer for plastic compositions

Info

Publication number
DE3606542A1
DE3606542A1 DE19863606542 DE3606542A DE3606542A1 DE 3606542 A1 DE3606542 A1 DE 3606542A1 DE 19863606542 DE19863606542 DE 19863606542 DE 3606542 A DE3606542 A DE 3606542A DE 3606542 A1 DE3606542 A1 DE 3606542A1
Authority
DE
Germany
Prior art keywords
saddle
mixing chamber
sealing surfaces
internal mixer
plastic
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Withdrawn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
DE19863606542
Other languages
German (de)
Inventor
Hans-Joachim Ing Grad Herrmann
Klaus Ruthenberg
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.)
Continental AG
Original Assignee
Continental Gummi Werke AG
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 Continental Gummi Werke AG filed Critical Continental Gummi Werke AG
Priority to DE19863606542 priority Critical patent/DE3606542A1/en
Publication of DE3606542A1 publication Critical patent/DE3606542A1/en
Withdrawn legal-status Critical Current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
    • B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/22—Component parts, details or accessories; Auxiliary operations
    • B29B7/26—Component parts, details or accessories; Auxiliary operations for discharging, e.g. doors
    • B29B7/263—Component parts, details or accessories; Auxiliary operations for discharging, e.g. doors from the underside in mixers having more than one rotor and a a casing closely surrounding the rotors
    • B29B7/266—Component parts, details or accessories; Auxiliary operations for discharging, e.g. doors from the underside in mixers having more than one rotor and a a casing closely surrounding the rotors using sliding doors
    • 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
    • B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/06—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
    • B29B7/10—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
    • B29B7/18—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/183—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft having a casing closely surrounding the rotors, e.g. of Banbury type
    • 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
    • B29B7/7476—Systems, i.e. flow charts or diagrams; Plants
    • B29B7/7495—Systems, i.e. flow charts or diagrams; Plants for mixing rubber

Landscapes

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

Abstract

The invention relates to an internal mixer for plastic or plastic/elastic compositions with rotating bodies arranged rotatably in a mixing chamber and a discharge opening which is arranged at the bottom of the mixing chamber and can be closed by means of a horizontally slidable saddle. To be able to achieve an improved seal, in particular however a dust-tight closure, at the discharge opening, that is to say in the region of the saddle, the saddle is provided with an upper part which can be lifted into its effective position and pressed against the sealing surfaces of the mixing chamber. In this arrangement, when the saddle is in the effective position, the upper part can be lifted by hydraulic cylinders or the like against the effect of a restoring force so as, in this manner, to cause pressure against the sealing surfaces.

Description

Die Erfindung betrifft einen Innenmischer für plastische bzw. pla­ stisch elastische Massen, insbesondere für Kautschuk oder kautschukähn­ liche Medien, mit in einer Mischkammer drehbar angeordneten Knetkör­ pern und einer unten an der Mischkammer befindlichen Entleerungs­ öffnung, die durch einen horizontal verschiebbaren Sattel verschließ­ bar ist.The invention relates to an internal mixer for plastic or pla elastic materials, in particular for rubber or rubber-like Liche media, with kneading bodies rotatably arranged in a mixing chamber pern and an emptying located at the bottom of the mixing chamber opening that closes with a horizontally movable saddle is cash.

Bei den bekannten Mischern dieser Art ergeben sich Abdichtungsprobleme an der Entleerungsöffnung deshalb, weil der Sattel lediglich eine horizontale Öffnungs- bzw. Schließbewegung ausführt. Deshalb kann eine verbesserte Abdichtung, insbesondere eine Abdichtung gegen Kleinteil­ chen, insbesondere Staub oder dergl. nicht erzielt werden.Sealing problems arise in the known mixers of this type at the discharge opening because the saddle is only one horizontal opening or closing movement. Therefore one improved sealing, especially sealing against small parts Chen, especially dust or the like. Not be achieved.

Die Erfindung will diese Nachteile verbessern, die Abdichtung somit verbessern, und zwar in der Weise, daß ein staubdichter Verschluß erreichbar ist.The invention aims to improve these disadvantages, the sealing thus improve, in such a way that a dustproof closure is achievable.

Zur Lösung dieser Aufgabe weist erfindungsgemäß der Sattel ein in seiner Wirkstellung anhebbares, gegen Dichtungsflächen der Mischkammer anpreßbares Oberteil auf. Vorzugsweise ist dabei das Oberteil in der Wirkstellung des Sattels gegen die Wirkung einer Rückstellkraft durch hydraulische Zylinder oder dergl. anhebbar bzw. gegen die erwähnten Dichtungsflächen anpreßbar.To achieve this object, the saddle has an in its operative position can be raised against sealing surfaces of the mixing chamber press-on top. The upper part is preferably in the Active position of the saddle against the action of a restoring force hydraulic cylinders or the like. Liftable or against the mentioned Sealing surfaces can be pressed on.

Der Sattel vollführt somit nicht nur eine horizontale Öffnungs- bzw. Schließbewegung aus, vielmehr ist das Oberteil des Sattels in der Lage, eine senkrecht dazu verlaufende Bewegung zum Abdichten auszuführen. Dadurch wird ein Kraftschluß bzw. Formschluß im Bereich der Dichtungs­ flächen erzielt, gegen die das Oberteil des Sattels angepreßt wird.The saddle does not only perform a horizontal opening or Closing movement, rather the upper part of the saddle is able to  perform a perpendicular movement to seal. This creates a frictional connection or positive connection in the area of the seal achieved surfaces against which the upper part of the saddle is pressed.

Weitere Einzelheiten der Erfindung werden anhand der Zeichnung er­ läutert, in der ein Ausführungsbeispiel der Erfindung dargestellt ist.Further details of the invention will be made with reference to the drawing clarifies in which an embodiment of the invention is shown.

Es zeigenShow it

Fig. 1 einen senkrechten Querschnitt durch einen Innen­ mischer für die Kautschukaufbereitung und Fig. 1 shows a vertical cross section through an internal mixer for the rubber preparation and

Fig. 2 einen Teillängsschnitt durch den Mischer gemäß Fig. 1. Fig. 2 shows a partial longitudinal section through the mixer of FIG. 1.

In der Mischkammer 1 mit einer Beschickungsöffnung 2 und nicht näher dargestellten,darüber befindlichen Schließ- und Beschickungseinrichtun­ gen befinden sich zwei Rotoren 3 mit parallelen Achsen 4; die zugehöri­ gen Wellen sind gekuppelt. Unten weist die Mischkammer 1 eine Entleerungs­ öffnung 5 auf, die zu beiden Seiten von konischen sich nach oben hin verengenden Dichtungsflächen 6 begrenzt ist. Das Öffnen und Verschließen dieser Entleerungsöffnungen erfolgt mit Hilfe eines horizontal ver­ schiebbaren Sattels 7, der durch einen Arbeitszylinder 8 hin und her verfahren werden kann.In the mixing chamber 1 with a loading opening 2 and not shown, located above closing and loading devices are two rotors 3 with parallel axes 4 ; the associated shafts are coupled. At the bottom, the mixing chamber 1 has an emptying opening 5 which is delimited on both sides by conical sealing surfaces 6 which narrow upwards. The opening and closing of these emptying openings takes place with the aid of a horizontally displaceable saddle 7 , which can be moved back and forth by a working cylinder 8 .

Das Oberteil 9 des Sattels 7 hat einen im wesentlichen dreieckigen Quer­ schnitt mit schräg anstehenden Seitenflächen 10, die satt an den Dich­ tungsflächen 6 anliegen können.The upper part 9 of the saddle 7 has a substantially triangular cross-section with sloping side surfaces 10 , the device surfaces 6 can abut against you.

Beim Verfahren des Sattels 7 steht das Oberteil 9 unter der Wirkung ei­ ner Rückhaltefeder 11, die versucht, das Oberteil 9 auf dem Sattel 7 zu halten. In der Schließstellung hingegen wird über eine Zuleitung 12 Drucköl in den Druckmittelzylinder 13 eingeleitet, um so gegen die Wirkung der Rückhaltefeder 11 eine kleine Hubbewegung des Oberteils 9 in der Weise zu bewirken, daß sich dessen Dichtflächen 10 satt an den Dichtungsflächen 6 anlegen. When moving the saddle 7 , the upper part 9 is under the action of a retaining spring 11 , which tries to hold the upper part 9 on the saddle 7 . In the closed position, however, pressure oil is introduced into the pressure medium cylinder 13 via a feed line 12 , so as to bring about a small lifting movement of the upper part 9 against the action of the retaining spring 11 in such a way that its sealing surfaces 10 abut against the sealing surfaces 6 .

Mit dieser senkrechten Bewegung des Oberteils 9 in Bezug auf das Unterteil des Sattels 7 erfolgt eine ausreichend gute, sichere staubdichte Abdichtung.With this vertical movement of the upper part 9 in relation to the lower part of the saddle 7 there is a sufficiently good, safe dust-tight seal.

Zum Verfahren des Sattels 7 werden die Druckmittelzylinder 13 ent­ lastet, wodurch das Oberteil 9 von den Dichtflächen 6 freikommt.To move the saddle 7 , the pressure medium cylinders 13 are relieved, whereby the upper part 9 is released from the sealing surfaces 6 .

Claims (3)

1. Innenmischer für plastische bzw. plastisch elastische Massen mit in einer Mischkammer drehbar angeordneten Drehkörpern und einer unten an der Mischkammer befindlichen Entleerungsöffnung, die durch einen horizontal verschiebbaren Sattel verschließbar ist, dadurch gekennzeichnet, daß der Sattel (7) ein in seiner Wirk­ stellung anhebbares, gegen Dichtungsflächen (6) der Mischkammer (1) anpreßbares Oberteil (9) aufweist.1. Internal mixer for plastic or plastically elastic masses with rotatably arranged rotating bodies in a mixing chamber and a discharge chamber located at the bottom of the mixing chamber, which can be closed by a horizontally displaceable saddle, characterized in that the saddle ( 7 ) can be raised in its active position , Has upper part ( 9 ) which can be pressed against sealing surfaces ( 6 ) of the mixing chamber ( 1 ). 2. Mischer nach Anspruch 1, dadurch gekennzeichnet, daß das Oberteil gegen die Wirkung einer Rückstellkraft (Rückhaltefeder (11)) an­ hebbar ist.2. Mixer according to claim 1, characterized in that the upper part can be raised against the action of a restoring force (retaining spring ( 11 )). 3. Mischer nach Anspruch 1 und 2. dadurch gekennzeichnet. daß das Ober­ teil (1) durch Druckmittelzylinder (13) gegen die Dichtungsflächen (6) anpreßbar ist.3. Mixer according to claim 1 and 2. characterized. that the upper part ( 1 ) can be pressed against the sealing surfaces ( 6 ) by pressure medium cylinders ( 13 ).
DE19863606542 1986-02-28 1986-02-28 Internal mixer for plastic compositions Withdrawn DE3606542A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19863606542 DE3606542A1 (en) 1986-02-28 1986-02-28 Internal mixer for plastic compositions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19863606542 DE3606542A1 (en) 1986-02-28 1986-02-28 Internal mixer for plastic compositions

Publications (1)

Publication Number Publication Date
DE3606542A1 true DE3606542A1 (en) 1987-09-03

Family

ID=6295173

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19863606542 Withdrawn DE3606542A1 (en) 1986-02-28 1986-02-28 Internal mixer for plastic compositions

Country Status (1)

Country Link
DE (1) DE3606542A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4028064A1 (en) * 1990-09-05 1992-03-12 Werner & Pfleiderer METHOD AND DEVICE FOR MIXING MATERIAL WITH THERMOPLASTIC PLASTIC
EP0820845A1 (en) * 1996-07-25 1998-01-28 Continental Aktiengesellschaft Internal mixer for elastomers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4028064A1 (en) * 1990-09-05 1992-03-12 Werner & Pfleiderer METHOD AND DEVICE FOR MIXING MATERIAL WITH THERMOPLASTIC PLASTIC
US5297865A (en) * 1990-09-05 1994-03-29 Werner & Pfleiderer Gummitechnik Gmbh Method and apparatus for the mixing of mixing material with thermoplastic material
EP0820845A1 (en) * 1996-07-25 1998-01-28 Continental Aktiengesellschaft Internal mixer for elastomers

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Legal Events

Date Code Title Description
8127 New person/name/address of the applicant

Owner name: CONTINENTAL AKTIENGESELLSCHAFT, 3000 HANNOVER, DE

8139 Disposal/non-payment of the annual fee