DE1779926A1 - Continuous mixing machine for rubber, plastics and the like. - Google Patents

Continuous mixing machine for rubber, plastics and the like.

Info

Publication number
DE1779926A1
DE1779926A1 DE19671779926 DE1779926A DE1779926A1 DE 1779926 A1 DE1779926 A1 DE 1779926A1 DE 19671779926 DE19671779926 DE 19671779926 DE 1779926 A DE1779926 A DE 1779926A DE 1779926 A1 DE1779926 A1 DE 1779926A1
Authority
DE
Germany
Prior art keywords
screw
plastics
rubber
mixing machine
mixing
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
DE19671779926
Other languages
German (de)
Inventor
Heinz Brinkmann
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.)
KraussMaffei Extrusion GmbH
Original Assignee
Hermann Berstorff Maschinenbau GmbH
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 Hermann Berstorff Maschinenbau GmbH filed Critical Hermann Berstorff Maschinenbau GmbH
Priority to DE19671779926 priority Critical patent/DE1779926A1/en
Publication of DE1779926A1 publication Critical patent/DE1779926A1/en
Pending 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
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/465—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft each shaft comprising rotor parts of the Banbury type in addition to screw parts
    • 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
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/82—Heating or cooling
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • B29C48/435—Sub-screws
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
    • B29C48/83—Heating or cooling the cylinders
    • B29C48/832—Heating
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
    • B29C48/83—Heating or cooling the cylinders
    • B29C48/834—Cooling
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
    • B29C48/84—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders by heating or cooling the feeding screws
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
    • B29C48/84—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders by heating or cooling the feeding screws
    • B29C48/85—Cooling
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Description

KontlnuLerliche Nischmaschine für Gummi, Kunststoffe und dergleichen Die Erfindung bezieht sich auf eine kontinuierliche Mischmaschine für Gummi, Kunststoffe und dergleichen mit zwei parallel zueinander liegenden, angetriebenen Schnecken, mit paarweise zusammenwirkenden Knetelementen, welche Ln einer Mischkammer angeordnet sind und die Schriecken in ihrer Längsrichtung gegeneinander versetzt sind und von der den Knetelementen abgewandten Seite her getrennt angetrieben werden mit einer Kühleinrichtung fUr eine jede Schnecke und das zugeordnete Kne telement. Continuous niche machine for rubber, plastics and the like The invention relates to a continuous mixing machine for rubber, plastics and the like with two parallel driven screws, with kneading elements cooperating in pairs, which are arranged in a mixing chamber are and the Schriecken are offset from one another in their longitudinal direction and from the side facing away from the kneading elements are driven separately with a Cooling device for each screw and the associated Kne element.

Aufgabe der Erfindung ist es, eine Maschine dieser Art zu schaffen, bei welcher während des gesamten Mischweges die Temperatur des Materials steuerbar ist. The object of the invention is to create a machine of this type, in which the temperature of the material can be controlled during the entire mixing path is.

Bei Zweischnecken-Mischvorrichtungen, bei denen die Schnecken jeweils unterschiedliche Mischteile aufweisen, ist es erforderlich, auch die Temperatur entsprechend den Mischteilen steuern zu können. Ist eine derartige Temperatursteuerung nicht möglich, so werden durch die Mischabschnitte verschieden große Scherkräfte Ln das Material eingeleitet ; d.h. das Material wird auch auf verschiedene Temperaturen gebracht. Da es jedoch aus konstruktiven Gründen nicht möglich ist, die verschiedenen Abschnitte einer Schnecke mit unterschiedlichen umfangsgeschwindigkeiten anzutreiben, treten starke Temperaturschwankungen während des Fördervorganges der Schnecke auf. Wird also beispielsweise ein Material verarbeitet, welches nur eine Temperatur von 1500 C ohne Schädigung vertragen kann, so ist es bei herkömmlichen Schnecken nicht möglich, diese Temperatur bei unterschiedlichen Schnsckenabschnitten (unterschiedliche Gangvolumina, unterschiedliche Stegbreite, unterschiedliche Steghöhe) während des gesamten Förderweges der Schnecke zu halten. In two-screw mixing devices in which the screws each have different mixing parts, it is necessary to also adjust the temperature to be able to control according to the mixing parts. Is such a temperature control not possible, the mixing sections result in shear forces of different magnitude Introduced into the material; i.e. the material is also at different temperatures brought. However, since it is not possible for design reasons, the various To drive sections of a screw at different circumferential speeds, strong temperature fluctuations occur during the conveying process of the screw. If, for example, a material is processed that only has a temperature of Can withstand 1500 C without damage, it is not with conventional snails possible to use this temperature with different snail sections (different Passage volumes, different web widths, different web heights) during the to keep the entire conveying path of the screw.

Die Schnecke muß somit alt einer derartigen Umfangsgeschwindigkeit angetrieben werden, bei der der am intensivsten mischende Teii der Schnecke nur 1500 C erreicht, d.h. also, daß die Mischwirkung der Gesamtschnecke nicht voll ausgenutzt werden kann.The worm must therefore have such a peripheral speed are driven, in which the most intensely mixing part of the screw only 1500 C reached, i.e. that the mixing effect of the entire screw is not fully utilized can be.

Wenn man jedoch, wie es die Erfindung vorsieht, das MischteLl, welches am intensivsten mischt, also die größten Scherkräfte in das Material einbringt, bzw. das Material am schneLlsten auf beispielsweise 1500 C bringt, getrennt von den anderen Schneckenteilen ktlhien bzw. temperieren kann, ist auch gegeben, daß man die Schnecke mit größerer Ulfangsgeschwindigkeit antreiben kann. Je größer jedoch die Umfangsgeschwindigkeit der Schnecke seLn kann, um so größer ist auch die Durchsatzleistung. However, if, as the invention provides, the mixing part, which mixes the most intensively, i.e. brings the greatest shear forces into the material, or brings the material to, for example, 1500 C as quickly as possible, separately from the other screw parts can cool or temper, it is also given that you can drive the screw with greater Ulfangs speed. The bigger, however the circumferential speed of the screw, the greater the throughput.

Es ist bei herkömmlichen Extrudern ferner bekannt, den Zylinder unterschiedlich zu temperieren. Mit einer derartigen Temperaturregelung ist auch die Temperatursteuerung des Materials bis zu einem gewissen Grade möglich. Einen wirklich durchschlagenden Erfolg Jedoch erreicht man, wenn man die Schnecke selbst von innen entsprechend temperieren kann. It is also known in conventional extruders to differentiate the barrel to temper. With such a temperature control is also the temperature control of the material is possible to a certain extent. A really resounding one Success, however, can be achieved if you look at the snail yourself from the inside accordingly can temper.

Ein AusfUhrungsbeispiel der erfindungsgemäßen Mischmaschine ist nachstehend anhand der Zeichnung noch etwas ausführlicher erläutert. In dieser zeigen in rein schematischer Weise: Fig. 1 einen waagerechten Schnitt durch die erfindungsgemäße kontinuierliche Mischmaschine Fig. 2 einen Teilschnitt durch die Austragöffnung der erfindungsgemäßen kontinuierlichen Mischmaschine. An exemplary embodiment of the mixing machine according to the invention is shown below explained in more detail using the drawing. In this show in pure schematically: Fig. 1 shows a horizontal section through the inventive continuous mixing machine Fig. 2 is a partial section through the discharge opening the continuous mixer according to the invention.

Das Material wird an der Stelle 15 in den Zweisclunek-; ken-Mischer eingebracht. Der Schneckenteil 1 fördert das Material in die Kammer 5. Während dieses Fördervorganges wird das Material auf eine bestimmte Temperatur gebracht. Zur Erreichung dieser Temperatur wird der Schneckenteil 1 durch die Leitung 12 mit einem entsprechend temperierten Medium beschickt. Außerdem wird der Zylinder 8 durch die ringförmigen Kanäle 8a, durch die ebenfalls ein wärmeilbertragendes Medium geführt wird, entsprechend temperiert. The material is at point 15 in the two clunks; ken mixer brought in. The screw part 1 conveys the material into the chamber 5. During this During the conveying process, the material is brought to a certain temperature. To achieve this temperature is the screw part 1 through the line 12 with a corresponding tempered medium charged. In addition, the cylinder 8 is through the annular Channels 8a, through which a heat transfer medium is also passed, accordingly tempered.

In der Mischkammer 5 wird das Material durch die Knetelemente 2 und 4 einer weiteren intensiven Mischung ausgesetzt. Da diese Knetelemente 2, 4 jedoch wesentlich mehr Scherkräfte in das Material einleiten als der Schneckenteil 1, d.h. das Material wesentlich mehr erwärmen, sind in den Knetteilen 2 und Lf ijeiz- bzw. Kühlkanäle 10 und 11 vorgesehen. Die Temperaturführung in der Kammer 5 erfolgt durch bekannte Me#fühler, die wiederum die Temperatur in den Kanälen 10 und 11 der Knetelemente und in den Kanälen 7 des Gehäuses steuern. Von der Mischkammer 5 gelangt dann das Material in den Teil 16 des Mischers. Auch in diesem Teil des Mischers ist wiederum eine genaue Temperatursteuerung durch das in den Kanal 13 eingeführte Medium bzw. durch die Heiz- und Kühlkanäle 9a des Zylinders 9 möglich. Das aufbereitete Material tritt dann durch die Öffnung 14 (Figur 2) aus der Maschine aus. In the mixing chamber 5, the material is through the kneading elements 2 and 4 exposed to another intense mixture. Since these kneading elements 2, 4, however introduce significantly more shear forces into the material than the screw part 1, i.e. heat the material much more, are in the kneading parts 2 and Lf ijeiz- or cooling channels 10 and 11 are provided. The temperature control in the Chamber 5 takes place through known measuring sensors, which in turn measure the temperature in the ducts Control 10 and 11 of the kneading elements and in the channels 7 of the housing. From the mixing chamber 5 then the material reaches part 16 of the mixer. Also in this part of the Mixer is again a precise temperature control through the in the channel 13 introduced medium or through the heating and cooling channels 9a of the cylinder 9 possible. The processed material then exits the machine through opening 14 (FIG. 2) the end.

Das wesentliche Merkmal der Erfindung ist demnach, daß die Schneckenteile 1 und 2 bzw. 3 und 4 unterschiedlich temperiert werden können. Diese Temperierung wird noch durch die eiz- bzw. Külilmöglichkeit der Zylinder 8 und 9 bzw. des Gehäuses 6 erhöht. The essential feature of the invention is therefore that the screw parts 1 and 2 or 3 and 4 can be tempered differently. This tempering is still due to the eiz- or cooling option of the cylinders 8 and 9 or the housing 6 increased.

- PatentansprUche - - patent claims -

Claims (2)

P A T E N T A N S P R Ü C H E 1. Kontinuierliche Mischmaschine für Gummi, Kunststoffe und dgl. mi t zwei parallel zueinander liegenden, angetriebenen Schnekken, mit paarweise zusammenwirkenden Knetelementen, welche In einer Mischkammer angeordnet sind und die Schnecken In ihrer Längsrichtung gegeneinander versetzt sind und zon der den Knetelementen abgewandten Seite her getrennt t angetrieben werden, mit einer Kühleinrichtung frür eine jede Schnecke und das zugeordnete Knetelement, d a d u r c h g e k e n n z e i c h n e t , daß die beiden Kühleinrichtungen voneinander unabhängig arbeiten. P A T E N T A N S P R Ü C H E 1. Continuous mixing machine for Rubber, plastics and the like. With two parallel, driven Screws, with kneading elements that work together in pairs, which in a mixing chamber are arranged and the screws are offset from one another in their longitudinal direction and are driven separately from the side facing away from the kneading elements with a cooling device for each screw and the associated kneading element, it is noted that the two cooling devices are separate from each other work independently. 2. Maschine nach Anspruch 1, d a d u r c h g e k e n n -z e i c h n e t , daß das eine jede Schnecke (1, 3) umgebende Gehause (89 9) temperierbar ist.2. Machine according to claim 1, d a d u r c h g e k e n n -z e i c h n e t that the housing (89 9) surrounding each screw (1, 3) can be tempered is. L e e r s e i t eL e r s e i t e
DE19671779926 1967-04-13 1967-04-13 Continuous mixing machine for rubber, plastics and the like. Pending DE1779926A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19671779926 DE1779926A1 (en) 1967-04-13 1967-04-13 Continuous mixing machine for rubber, plastics and the like.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19671779926 DE1779926A1 (en) 1967-04-13 1967-04-13 Continuous mixing machine for rubber, plastics and the like.
DEB0092048 1967-04-13

Publications (1)

Publication Number Publication Date
DE1779926A1 true DE1779926A1 (en) 1972-01-13

Family

ID=25755796

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19671779926 Pending DE1779926A1 (en) 1967-04-13 1967-04-13 Continuous mixing machine for rubber, plastics and the like.

Country Status (1)

Country Link
DE (1) DE1779926A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2429655A1 (en) * 1978-06-29 1980-01-25 Nitto Chemical Industry Co Ltd METHOD FOR COOLING POLYMERIC HYDROGEL BLOCKS
WO1998013181A1 (en) * 1996-09-23 1998-04-02 Bühler AG Device for homogenizing, mixing and/or granulating chemical substances

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2429655A1 (en) * 1978-06-29 1980-01-25 Nitto Chemical Industry Co Ltd METHOD FOR COOLING POLYMERIC HYDROGEL BLOCKS
WO1998013181A1 (en) * 1996-09-23 1998-04-02 Bühler AG Device for homogenizing, mixing and/or granulating chemical substances
US6595765B1 (en) 1996-09-23 2003-07-22 Buhler Ag Device for homogenizing, mixing and/or granulating chemical substances

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