EP0809567A1 - Spindle, in particular extrusion spindle, composed of segments - Google Patents

Spindle, in particular extrusion spindle, composed of segments

Info

Publication number
EP0809567A1
EP0809567A1 EP95941676A EP95941676A EP0809567A1 EP 0809567 A1 EP0809567 A1 EP 0809567A1 EP 95941676 A EP95941676 A EP 95941676A EP 95941676 A EP95941676 A EP 95941676A EP 0809567 A1 EP0809567 A1 EP 0809567A1
Authority
EP
European Patent Office
Prior art keywords
shaft
segments
segment
bore
extruder
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Withdrawn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
EP95941676A
Other languages
German (de)
French (fr)
Inventor
Max Gutknecht
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
Publication of EP0809567A1 publication Critical patent/EP0809567A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/22—Extrusion presses; Dies therefor
    • B30B11/24—Extrusion presses; Dies therefor using screws or worms
    • B30B11/246—Screw constructions
    • 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
    • B29C48/256—Exchangeable extruder parts
    • B29C48/2564—Screw 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
    • 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
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/58—Screws provided with seal ring elements, i.e. elements of generally circular and tapered shape for preventing the back flow of the melt
    • 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

Definitions

  • Shaft in particular extruder shaft, which is composed of segments.
  • the invention relates to a device for the thermal, mechanical, chemical and / or physical treatment of a product in an interior of a housing by means of at least one rotatable extruder shaft, which consists of individual segments which are connected to one another by means of screw bolts, the screw bolts reaching through bore sections in the segments and used in threads, threaded bores or the like. are and an outer surface of the extruder shaft is covered with screw flights.
  • a spline shaft is connected to a motor or a gear, which engages in splines which are formed in an axial bore in the segments.
  • a motor or a gear which engages in splines which are formed in an axial bore in the segments.
  • extruder shafts which are covered with worm gears, the desired thermal and / or mechanical, chemical or physical treatment of a product taking place through the extruder shafts.
  • Such a device is known for example from CH-PS 674 474 and the international patent application PCT / CH 83/0059.
  • a product is mechanically digested by two extruder shafts that interact with one another, in particular fiberized and thermally treated.
  • the main disadvantage here is that the segments rust on the spline shaft, particularly when treating liquid products in the area of the keyway, so that they can only be removed with extreme difficulty and, in particular, can be replaced.
  • the segments require a relatively large wall thickness in order to transmit the torsional forces from the worm gears to the spline shaft.
  • the present invention is not limited to an extruder shaft alone, but can be applied to any other shaft composed of segments.
  • the present invention is based on the object
  • a receiving space adjoins the thread, threaded bore or the like and the bore section to the respectively adjacent segment, which receives a guide bush through which the
  • This guide bushing has the significant advantage that, since a plurality of such guide bushings are provided on a circular ring, the torque forces which act on the shaft are split into partial forces which are received by the guide bushings. Furthermore, the use of a spline shaft is unnecessary, as a result of which no rusting can take place between this spline shaft and the segments. Since the guide bushes are preferably made of stainless steel, there is no rusting between the individual segments, so that they can be easily detached from one another and individual segments can be exchanged easily.
  • a possibly existing axial space in the segments is not occupied by the spline shaft, but can now be used by a medium for cooling or heating the shaft, if this is desired.
  • the number of external lubrication points is considerably reduced, since the shaft can be connected directly to an transmission flange of a transmission shaft or directly to the transmission flange via an outer flange.
  • Each receiving space preferably has a depth which corresponds to approximately half the length of the guide bush.
  • the guide bushes disappear completely in the corresponding receiving spaces after the shaft has been assembled, so that in the event of torsional or torque forces, these are evenly distributed as shear forces on the guide bushes. Since a plurality of guide bushings are provided on a circular ring, any slippage is also avoided by the guide bushings. It does not matter whether two extruder shafts interact with each other and rotate in opposite or clockwise directions.
  • Figure 1 is an exploded view of a longitudinal section through an extruder shaft which is flanged to a gear;
  • FIG. 2 shows a longitudinal section through the extruder shaft according to FIG. 1 in the position of use
  • FIG. 3 shows an exploded view of a longitudinal section through a further exemplary embodiment of an extruder shaft which is flanged onto a gear;
  • FIG. 4 shows a longitudinal section through the extruder shaft according to FIG. 3 in the position of use
  • FIG. 5 shows an exploded view of a longitudinal section through a further exemplary embodiment of an extruder shaft which is flanged to a gear;
  • FIG. 6 shows an exploded view of a longitudinal section through yet another exemplary embodiment of an extruder shaft which is flanged onto a gear
  • FIG. 7 shows a cross section through the extruder shaft in the position of use according to FIG. 4 along line V-V;
  • FIGS. 8 and 9 are longitudinal sections through two further exemplary embodiments of extruder shafts in use positions.
  • an extruder shaft 1 consists of a plurality of segments 2, 3 and 4. Each segment has one
  • Shell surface 7 of this sleeve shell with worm threads 8 is occupied.
  • the segment 2 has a plurality of worm threads 8, while the segments 3 and 4 have only approximately one worm thread 8.
  • segment 2 has blind holes 10, a deep step of this blind hole 10 being designed as a threaded hole 11.
  • An enlarged receiving space 12 adjoins the threaded bore 11, and a guide bush 13 can be inserted into this in the position of use.
  • a depth t of this receiving space 12 corresponds approximately to half a length 1 of the guide bush 13.
  • the following segment 3 has a receiving space 12.1 and 12.2 on both sides of a bore section 14.
  • the receiving space 12.1 serves to receive the other half of the guide bush 13, the receiving space 12.2 to accommodate a guide bush 13.1 between the segment 3 and the segment 4.
  • the segment 4 also has a receiving space 12.3 for receiving the second part of the guide bush 13.1.
  • a further bore section 15 adjoins the receiving space 12.3 and opens out into an enlarged head space 16.
  • This head space 16 serves to receive a head 17 of the screw bolt 9.
  • segment 4 has a pane space 18, into which an end plate 19 can be inserted.
  • This end plate 19 is secured by short screws 20 which penetrate stepped bores 21 in the end plate 19 and engage in threaded bores 22 in the segment 4.
  • the blind hole 10 has a connecting flange 23 which in turn has threaded holes 24.
  • a gear flange 26 can be connected to the connection flange 23 on a gear shaft 27 by means of screw bolts 25.
  • the bolts 25 pass through the gear flange 26 and are screwed into the threaded bores 24.
  • connection flange 23 fixed on the connection flange 23 by means of the screw bolts 25 on the transmission flange 26 of the transmission shaft 27.
  • Housing which is composed of different chamber sections 28.1 to 28.7. Furthermore, an entry 29 can be seen through the material to be treated into an interior
  • the exemplary embodiment of an extruder shaft 1.1 according to FIGS. 3 and 4 differs from that according to FIGS. 1 and 2 in that a segment 3.1 is designed to be substantially wider and is equipped with a plurality of screw flights 8 than segment 3 according to FIG Segment 3.1 with segment 2 additional connecting screws 31 are provided which are accessible through the receiving space 12.2 and part of the bore section 14.1 for a corresponding screwing tool. In this way, a large number of segments can also be connected to one another (see FIG. 6 extruder shaft 1.3).
  • segment 3.1 can also be connected directly to a via the connecting screws 31
  • Gear flange 26.1 are connected, as shown in Figure 5.
  • This gear flange 26.1 is seated in a gear 33.
  • sealing rings 34.1 and 34.2 can be located between the individual segments 4 and 3.1 and the gear flange 26.1.
  • a housing plate 28.6 can be seen in FIG. 7, which encloses two interior spaces 30.1 and 30.2 for receiving two extruder shafts 1a and 1b. Bores 32 are formed in the housing plate so that successive housing plates can be coupled to one another.
  • the bore section 14.1 and the receiving space 12.2 for the guide bush 13.1 can be seen in the extruder shaft.
  • an extruder shaft 1.3 similar to FIG. 6 is used in the corresponding chamber sections 28.
  • a friction plate 35 is provided in the housing 28 at the discharge of the extruder shaft 1.3, which forms a discharge opening 36 for the material to be treated.
  • This discharge opening 36 is connected to the interior of the extruder via an annular space marked by arrows 37. In particular, melt is discharged from the plastics area through this annular space.
  • a cone 39 is used in discharge plates 38, which is connected to a connecting plate 41 by a screw 40.
  • This cone 39 is also supported relative to the segment 4 via corresponding guide bushes 13.
  • the cone 39 forms with the discharge plates 38 a cone space 42 through which the product to be treated can be further unraveled and discharged.

Abstract

In a device for thermal, mechanical, chemical and/or physical treatment of a product in an inside space (30) of a casing (28) using at least one rotary extrusion spindle (1) which consists of individual segments (2, 3, 4) joined together by screw bolts (9), the screw bolts (9) pass through bore sections (14, 15) in the segments (2, 3, 4) and are set in threaded bores (11), and a jacketing surface (7) of the extrusion spindle (1) is covered with screw threads (8). Adjoining the threaded bore (11) and the bore section (14, 15) towards the next adjacent segment (2, 4 or 3) is a containment space (12, 12.1, 12.2, 12.3) which holds a guide bush (13, 13.1) through which the screw bolt (9) is inserted.

Description

Welle, insbesondere Extruderwelle, die aus Segmenten zusammengesetzt ist. Shaft, in particular extruder shaft, which is composed of segments.
Die Erfindung betrifft eine Vorrichtung zum thermischen, mechanischen, chemischen und/oder physikalischen Behandeln eines Produktes in einem Innenraum eines Gehäuses mittels zumindest einer drehbaren Extruderwelle, welche aus einzelnen, miteinander über Schraubenbolzen verbundenen Segmenten besteht, wobei die Schraubenbolzen Bohrungsab¬ schnitte in den Segmenten durchgreifen und in Gewinde, Gewindebohrungen od. dgl. eingesetzt. sind und eine Mantelfläche der Extruderwelle mit Schneckengängen belegt ist.The invention relates to a device for the thermal, mechanical, chemical and / or physical treatment of a product in an interior of a housing by means of at least one rotatable extruder shaft, which consists of individual segments which are connected to one another by means of screw bolts, the screw bolts reaching through bore sections in the segments and used in threads, threaded bores or the like. are and an outer surface of the extruder shaft is covered with screw flights.
Derartige Wellen werden in vielen Bereichen von Industrie und Technik benötigt. In der Regel ist dabei mit einem Motor oder einem Getriebe eine Keilwelle verbunden, welche in Keilnuten eingreift, die in einer Axialbohrung in den Segmenten eingeformt sind. Vor allem geht es im vorliegen¬ den Fall um Extruderwellen, die mit Schneckengängerfbelegt sind, wobei durch die Extruderwellen eine gewünschte thermische und/oder mechanische, chemische oder physika¬ lische Behandlung eines Produktes stattfindet. Das bedeutet, dass auf die Segmente Torsionskräfte einwirken, die von dem Eingriff der Keilwelle in Keilnuten aufgefangen werden.Such waves are needed in many areas of industry and technology. As a rule, a spline shaft is connected to a motor or a gear, which engages in splines which are formed in an axial bore in the segments. Above all, in the present case, it is about extruder shafts which are covered with worm gears, the desired thermal and / or mechanical, chemical or physical treatment of a product taking place through the extruder shafts. The means that torsional forces act on the segments, which are absorbed by the engagement of the spline shaft in splines.
Eine derartige Vorrichtung ist beispielsweise aus der CH-PS 674 474 und der internationalen Patentanmeldung PCT/CH 83/0059 bekannt. In beiden Fällen wird ein Produkt durch zwei miteinander wirkenden Extruderwellen mechanisch aufgeschlossen, insbesondere aufgefasert und thermisch behandelt.Such a device is known for example from CH-PS 674 474 and the international patent application PCT / CH 83/0059. In both cases, a product is mechanically digested by two extruder shafts that interact with one another, in particular fiberized and thermally treated.
Nachteilig ist hierbei vor allem, dass die Segmente insbesondere bei der Behandlung von flüssigen Produkten im Bereich der Keilnut an der Keilwelle festrosten, so dass sie nur ausserordnetlich schwierig entfernbar und insbesondere austauschbar sind.The main disadvantage here is that the segments rust on the spline shaft, particularly when treating liquid products in the area of the keyway, so that they can only be removed with extreme difficulty and, in particular, can be replaced.
Ferner benötigen die Segmente eine relativ grosse Wandstärke, um die Torsionskräfte von den Schneckengängen auf die Keilwelle zu übertragen.Furthermore, the segments require a relatively large wall thickness in order to transmit the torsional forces from the worm gears to the spline shaft.
Die vorliegende Erfindung ist jedoch nicht auf eine Extruderwelle allein beschränkt, sondern kann bei jeder anderen Welle, die aus Segmenten zusammengesetzt ist, Anwendung finden.However, the present invention is not limited to an extruder shaft alone, but can be applied to any other shaft composed of segments.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, dieThe present invention is based on the object
Verbindung der Segmente zu einer Welle zu verbessern und insbesondere ein Auseinandernehmen der Welle zu erleichtern.To improve connection of the segments to a shaft and in particular to facilitate disassembly of the shaft.
Zur Lösung dieser Aufgabe führt, dass an die Gewinde, Gewindebohrung od. dgl. und an den Bohrungsabschnitt zum jeweils benachbarten Segment ein Aufnahmeraum anschliesst, welcher eine Führungsbuchse aufnimmt, durch die derTo achieve this object, a receiving space adjoins the thread, threaded bore or the like and the bore section to the respectively adjacent segment, which receives a guide bush through which the
Schraubenbolzen gesteckt ist. Diese Führungsbuchse hat den wesentlichen Vorteil, dass, da eine Mehrzahl von derartigen Führungsbuchsen auf einem Kreisring vorgesehen sind, die Drehmomentkräfte, welche auf die Welle wirken, in Teilkräfte aufgespaltet werden, die von den Führungsbuchsen aufgenommen werden. Ferner erübrigt sich der Einsatz einer Keilwelle, wodurch auch kein Festrosten mehr zwischen dieser Keilwelle und den Segmenten stattfinden kann. Da die Führungsbuchsen bevorzugt aus rostfreiem Stahl bestehen, findet auch kein Rosten zwischen den einzelnen Segmenten statt, so dass diese leicht voneinander gelöst und einzelne Segmente einfach ausgetauscht werden können.Bolt is inserted. This guide bushing has the significant advantage that, since a plurality of such guide bushings are provided on a circular ring, the torque forces which act on the shaft are split into partial forces which are received by the guide bushings. Furthermore, the use of a spline shaft is unnecessary, as a result of which no rusting can take place between this spline shaft and the segments. Since the guide bushes are preferably made of stainless steel, there is no rusting between the individual segments, so that they can be easily detached from one another and individual segments can be exchanged easily.
Ein möglicherweise in den Segmenten vorhandener axialer Raum ist auch nicht von der Keilwelle belegt, sondern kann jetzt durch eine Medium zum Kühlen oder Heizen der Welle benutzt werden, falls dies gewünscht wird.A possibly existing axial space in the segments is not occupied by the spline shaft, but can now be used by a medium for cooling or heating the shaft, if this is desired.
Ferner ist es möglich, einen Hülsenmantel um den eben genannten axialen Raum relativ dünn auszubilden, sofern beispielsweise der Hülsenmantel mit Schneckengängen, wie dies bei einem Extruder der Fall ist, belegt ist. Die Schneckengänge stabilisieren dann selbst die realtiv dünne Wand des Hülsenmantels.Furthermore, it is possible to make a sleeve shell relatively thin around the axial space just mentioned, provided, for example, the sleeve shell is covered with screw flights, as is the case with an extruder. The worm threads then stabilize even the relatively thin wall of the sleeve casing.
Ferner ist die Anzahl der Aussenschmierstellen erheblich vermindert, da die Welle direkt über einen Aussenflansch an einen Getriebeflansch einer Getriebewelle oder direkt an den Getriebeflansch angeschlossen werden kann.Furthermore, the number of external lubrication points is considerably reduced, since the shaft can be connected directly to an transmission flange of a transmission shaft or directly to the transmission flange via an outer flange.
Bevorzugt weist jeder Aufnahmeraum eine Tiefe auf, die etwa der Hälfte einer Länge der Führungsbuchse entspricht. Hierdurch verschwinden die Führungsbuchsen nach dem Zusammenbau der Welle vollständig in den entsprechenden Aufnahmeräumen, so dass bei Torsions- bzw. Drehmoment¬ kräften diese als Scherkräfte auf die Führungsbuchsen gleichmässig verteilt werden. Da eine Mehrzahl von Führungsbuchsen auf einem Kreisring vorgesehen sind, wird durch die Führungsbuchsen auch jeglicher Schlupf vermieden. Dabei ist es gleichgültig, ob zwei Extruderwellen miteinander zusammenwirken und gegenläufig oder im gleichen Uhrzeigersinn drehen. Each receiving space preferably has a depth which corresponds to approximately half the length of the guide bush. As a result, the guide bushes disappear completely in the corresponding receiving spaces after the shaft has been assembled, so that in the event of torsional or torque forces, these are evenly distributed as shear forces on the guide bushes. Since a plurality of guide bushings are provided on a circular ring, any slippage is also avoided by the guide bushings. It does not matter whether two extruder shafts interact with each other and rotate in opposite or clockwise directions.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele sowie anhand der Zeichnung; diese zeigt inFurther advantages, features and details of the invention result from the following description of preferred exemplary embodiments and from the drawing; this shows in
Figur 1 eine Explosionsdarstellung eines Längsschnitts durch eine Extruderwelle, die an einem Getriebe angeflanscht wird;Figure 1 is an exploded view of a longitudinal section through an extruder shaft which is flanged to a gear;
Figur 2 einen Längsschnitt durch die Extruderwelle gemäss Figur 1 in Gebrauchslage;FIG. 2 shows a longitudinal section through the extruder shaft according to FIG. 1 in the position of use;
Figur 3 eine Explosionsdarstellung eines Längsschnitts durch ein weiteres Ausführungsbeispiel einer Extruderwelle, welche an einem Getriebe angeflanscht wird;FIG. 3 shows an exploded view of a longitudinal section through a further exemplary embodiment of an extruder shaft which is flanged onto a gear;
Figur 4 einen Längsschnitt durch die Extruderwelle gemäss Figur 3 in Gebrauchslage;FIG. 4 shows a longitudinal section through the extruder shaft according to FIG. 3 in the position of use;
Figur 5 eine Explosionsdarstellung eines Längsschnitts durch ein weiteres Ausführungsbeispiel einer Extruderwelle, welche an einem Getriebe angeflansch ist;FIG. 5 shows an exploded view of a longitudinal section through a further exemplary embodiment of an extruder shaft which is flanged to a gear;
Figur 6 eine Explosionsdarstellung eines Längsschnitts durch noch ein weiteres Ausführungsbeispiel einer Extruder¬ welle, welche an einem Getriebe angeflanscht wird;FIG. 6 shows an exploded view of a longitudinal section through yet another exemplary embodiment of an extruder shaft which is flanged onto a gear;
Figur 7 einen Querschnitt durch die Extruderwelle in Gebrauchslage gemäss Figur 4 entlang Linie V-V;FIG. 7 shows a cross section through the extruder shaft in the position of use according to FIG. 4 along line V-V;
Figur 8 und 9 Längsschnitt durch zwei weitere Ausführungs- beispiele von Extruderwellen in Gebrauchslagen.FIGS. 8 and 9 are longitudinal sections through two further exemplary embodiments of extruder shafts in use positions.
Eine Extruderwelle 1 besteht gemäss Figur 1 aus einer Mehrzahl von Segmenten 2, 3 und 4. Jedes Segment weist eineAccording to FIG. 1, an extruder shaft 1 consists of a plurality of segments 2, 3 and 4. Each segment has one
Axialbohrung 5 in einem Hülsenmantel 6 auf, wobei eineAxial bore 5 in a sleeve jacket 6, one
Mantelfläche 7 dieses Hülsenmantels mit Schneckengängen 8 belegt ist. Das Segment 2 weist mehrere Schneckengänge 8 auf, während die Segmente 3 und 4 lediglich etwa einen Schneckengang 8 besitzen.Shell surface 7 of this sleeve shell with worm threads 8 is occupied. The segment 2 has a plurality of worm threads 8, while the segments 3 and 4 have only approximately one worm thread 8.
Die Segmente 2, 3 und 4 werden durch eine Mehrzahl von Schraubenbolzen 9 zusammengehalten, wobei diese Schrauben¬ bolzen 9 entsprechende Bohrungen in den Segmenten 2, 3 und 4 durchgreifen bzw. in Bohrungen eingreifen. Das Segment 2 weist hierzu Sacklochbohrungen 10 auf, wobei eine tiefe Stufe dieser Sacklochbohrung 10 als Gewindebohrung 11 ausgebildet ist. An die Gewindebohrung 11 schliesst ein erweiterter Aufnahmeraum 12 an, in den in Gebrauchslage eine Führungsbuchse 13 eingesetzt werden kann. Eine Tiefe t dieses Aufnahmeraumes 12 entspricht in etwa der Hälfte einer Länge 1 der Führungsbuchse 13.The segments 2, 3 and 4 are held together by a plurality of screw bolts 9, these screw bolts 9 penetrating corresponding bores in the segments 2, 3 and 4 or engaging in bores. For this purpose, segment 2 has blind holes 10, a deep step of this blind hole 10 being designed as a threaded hole 11. An enlarged receiving space 12 adjoins the threaded bore 11, and a guide bush 13 can be inserted into this in the position of use. A depth t of this receiving space 12 corresponds approximately to half a length 1 of the guide bush 13.
Das nachfolgende Segment 3 weist beidseits eines Bohrungs- abschnittes 14 je einen Aufnahmeraum 12.1 und 12.2 auf. Der Aufnahmeraum 12.1 dient der Aufnahme der anderen Hälfte der Führungsbuchse 13, der Auf ahmeraum 12.2 der Aufnahme einer Führungsbuchse 13.1 zwischen dem Segment 3 und dem Segment 4. Dementsprechend weist auch das Segment 4 einen Aufnahmeraum 12.3 zur Aufnahme des zweiten Teils der Führungsbuchse 13.1 auf.The following segment 3 has a receiving space 12.1 and 12.2 on both sides of a bore section 14. The receiving space 12.1 serves to receive the other half of the guide bush 13, the receiving space 12.2 to accommodate a guide bush 13.1 between the segment 3 and the segment 4. Accordingly, the segment 4 also has a receiving space 12.3 for receiving the second part of the guide bush 13.1.
An den Aufnahmeraum 12.3 schliesst ein weiterer Bohrungsabschnitt 15 an, der in einen erweiterten Kopfraum 16 ausmündet. Dieser Kopfräum 16 dient der Aufnahme eines Kopfes 17 des Schraubenbolzens 9.A further bore section 15 adjoins the receiving space 12.3 and opens out into an enlarged head space 16. This head space 16 serves to receive a head 17 of the screw bolt 9.
Ferner weist das Segment 4 einen Scheibenraum 18 auf, in den eine Abschlussplatte 19 eingesetzt werden kann. Diese Abschlussplatte 19 wird durch Kurzschrauben 20 gesichert, welche Stufenbohrungen 21 in der Abschlussplatte 19 durchdringen und in Gewindebohrungen 22 in dem Segment 4 eingreifen. Dem Segment 2 ist andernends der Sacklochbohrung 10 ein Anschlussflansch 23 angesetzt, welcher wiederum Gewindebohrungen 24 aufweist. Durch Schraubenbolzen 25 kann ein Getriebeflansch 26 an einer Getriebewelle 27 mit dem Anschlussflansch 23 verbunden werden. Hierbei durchgreifen die Schraubenbolzen 25 den Getriebeflansch 26 und werden in die Gewindebohrungen 24 eingeschraubt .Furthermore, segment 4 has a pane space 18, into which an end plate 19 can be inserted. This end plate 19 is secured by short screws 20 which penetrate stepped bores 21 in the end plate 19 and engage in threaded bores 22 in the segment 4. At the other end of the segment 2, the blind hole 10 has a connecting flange 23 which in turn has threaded holes 24. A gear flange 26 can be connected to the connection flange 23 on a gear shaft 27 by means of screw bolts 25. Here, the bolts 25 pass through the gear flange 26 and are screwed into the threaded bores 24.
In Figur 2 ist erkennbar, dass die Segmente 2, 3 und 4 sowie die Abschlussplatte 19 durch die entsprechendenIn Figure 2 it can be seen that the segments 2, 3 and 4 and the end plate 19 by the corresponding
Schraubenbolzen 9 und Kurzschrauben 20 zu der ExtuderwelleBolts 9 and 20 short screws to the extruder shaft
1 zusammengefasst sind. Ferner ist die gesamte Extuderwelle1 are summarized. Furthermore, the entire extruder shaft
1 über den Anschlussflansch 23 mittels der Schraubenbolzen 25 an dem Getriebeflansch 26 der Getriebewelle 27 festgelegt.1 fixed on the connection flange 23 by means of the screw bolts 25 on the transmission flange 26 of the transmission shaft 27.
Extruderwelle 1 und Getriebeteile sitzen dabei in einemExtruder shaft 1 and gear parts sit in one
Gehäuse, welches aus verschiedenen Kammerabschnitten 28.1 bis 28.7 zusammengesetzt ist. Ferner ist ein Eintrag 29 erkennbar, durch den zu behandelndes Gut in einen InnenraumHousing, which is composed of different chamber sections 28.1 to 28.7. Furthermore, an entry 29 can be seen through the material to be treated into an interior
29 eingegeben werden kann.29 can be entered.
Das Ausführungsbeispiel einer Extruderwelle 1.1 gemäss den Figuren 3 und 4 unterscheidet sich von demjenigen nach Figuren 1 und 2 dadurch, dass ein Segment 3.1 wesentlich breiter ausgebildet und mit mehreren Schneckengängen 8 belegt ist, als das Segment 3 nach Figur 1. Dementsprechend sind zur Verbindung des Segmentes 3.1 mit dem Segment 2 zusätzliche Verbindungsschrauben 31 vorgesehen, welche durch den Aufnahmeraum 12.2 und einen Teil des Bohrungsabschnittes 14.1 für ein entsprechendes Schraub¬ werkzeug zugänglich sind. Auf diese Weise können im übrigen eine Vielzahl von Segmenten miteinander verbunden werden (siehe Figur 6 Extruderwelle 1.3) .The exemplary embodiment of an extruder shaft 1.1 according to FIGS. 3 and 4 differs from that according to FIGS. 1 and 2 in that a segment 3.1 is designed to be substantially wider and is equipped with a plurality of screw flights 8 than segment 3 according to FIG Segment 3.1 with segment 2 additional connecting screws 31 are provided which are accessible through the receiving space 12.2 and part of the bore section 14.1 for a corresponding screwing tool. In this way, a large number of segments can also be connected to one another (see FIG. 6 extruder shaft 1.3).
Auf die gleiche Weise kann aber Segment 3.1 über die Verbindungsschrauben 31 auch direkt mit einem Getriebeflansch 26.1 verbunden werden, wie dies in Figur 5 gezeigt ist. Dieser Getriebeflansch 26.1 sitzt in einem Getriebe 33. Ferner ist hier angedeutet, daß sich zwischen den einzelnen Segmenten 4 und 3.1 sowie dem Getriebeflansch 26.1 Dichtringe 34.1 und 34.2 befinden können.In the same way, however, segment 3.1 can also be connected directly to a via the connecting screws 31 Gear flange 26.1 are connected, as shown in Figure 5. This gear flange 26.1 is seated in a gear 33. It is also indicated here that sealing rings 34.1 and 34.2 can be located between the individual segments 4 and 3.1 and the gear flange 26.1.
In Figur 7 ist eine Gehäuseplatte 28.6 erkennbar, welche zwei Innenräume 30.1 und 30.2 zur Aufnahme von zwei Extruderwellen la und lb umschliesst. In die Gehäuseplatte sind Bohrungen 32 eingeformt, damit aufeinanderfolgende Gehäuseplatten miteinander gekoppelt werden können.A housing plate 28.6 can be seen in FIG. 7, which encloses two interior spaces 30.1 and 30.2 for receiving two extruder shafts 1a and 1b. Bores 32 are formed in the housing plate so that successive housing plates can be coupled to one another.
In der Extruderwelle sind der Bohrungsabschnitt 14.1 und der Aufnahmeraum 12.2 für die Führungsbuchse 13.1 erkennbar.The bore section 14.1 and the receiving space 12.2 for the guide bush 13.1 can be seen in the extruder shaft.
Bei einem Ausführungsbeispiels eines Doppelkammer-Extruders gemäss Figur 8 wird in den entsprechenden Kammerabschnitten 28 eine Extruderwelle 1.3 ähnlich Figur 6 eingesetzt. Allerdings ist in dem Gehäuse 28 am Austrag der Extruder¬ welle 1.3 eine Reibplatte 35 vorgesehen, welche eine Austragsöffnung 36 für das behandelte Gut ausbildet. Diese Austragsöffnung 36 steht über einen durch Pfeile 37 gekenn¬ zeichneten Ringraum mit dem Inneren des Extruders in Verbindung. Durch diesen Ringraum wird insbesondere Schmelz aus dem Kunststoffbereich ausgetragen.In one embodiment of a double-chamber extruder according to FIG. 8, an extruder shaft 1.3 similar to FIG. 6 is used in the corresponding chamber sections 28. However, a friction plate 35 is provided in the housing 28 at the discharge of the extruder shaft 1.3, which forms a discharge opening 36 for the material to be treated. This discharge opening 36 is connected to the interior of the extruder via an annular space marked by arrows 37. In particular, melt is discharged from the plastics area through this annular space.
Demgegenüber ist bei einem weiteren Ausführungsbeispiel der Erfindung gemäß Figur 9 in Austragsplatten 38 ein Kegel 39 eingesetzt, der über eine Schraube 40 mit einer Anschlußplatte 41 verbunden ist. Dabei ist auch dieser Kegel 39 über entsprechende Führungsbüchsen 13 gegenüber dem Segment 4 abgestützt.In contrast, in a further exemplary embodiment of the invention according to FIG. 9, a cone 39 is used in discharge plates 38, which is connected to a connecting plate 41 by a screw 40. This cone 39 is also supported relative to the segment 4 via corresponding guide bushes 13.
Der Kegel 39 bildet mit den Austragsplatten 38 einen Kegelraum 42, durch den das zu behandelnde Produkt noch weiter aufgefasert und ausgetragen werden kann. The cone 39 forms with the discharge plates 38 a cone space 42 through which the product to be treated can be further unraveled and discharged.

Claims

PATENTANSPRÜCHE PATENT CLAIMS
1. Vorrichtung zum thermischen, mechanischen, chemischen und/oder physikalischen Behandeln eines Produktes in einem Innenraum (30) eines Gehäuses (28) mittels zumindest einer drehbaren Extruderwelle (1) , welche aus einzelnen miteinander über Schraubenbolzen (9) verbundenen Segmenten (2, 3, 4) besteht, wobei die Schraubenbolzen (9) Bohrungsabschnitte (14, 15) in den Segmenten (2, 3, 4) durchgreifen und in Gewinde, Gewindebohrung (11) od. dgl . eingesetzt sind und eine Mantelfläche (7) der Extruderwelle (1) mit Schneckengängen (8) belegt ist,1. Device for the thermal, mechanical, chemical and / or physical treatment of a product in an interior (30) of a housing (28) by means of at least one rotatable extruder shaft (1) which consists of individual segments (2, 2) connected to one another via screw bolts (9). 3, 4), wherein the screw bolts (9) pass through the bore sections (14, 15) in the segments (2, 3, 4) and in the thread, threaded bore (11) or the like. are inserted and a lateral surface (7) of the extruder shaft (1) is covered with screw flights (8),
dadurch gekennzeichnet,characterized,
dass an die Gewinde, Gewindebohrung (11) od. dgl. und an den Bohrungsabschnitt (14, 15) zum jeweils benachbarten Segment (2, 4 bzw. 3) ein Aufnahmeraum (12, 12.1, 12.2, 12.3) anschliesst, welcher eine Führungsbuchse (13, 13.1) aufnimmt, durch die der Schraubenbolzen (9) gesteckt ist.that a receiving space (12, 12.1, 12.2, 12.3) connects to the thread, threaded bore (11) or the like and to the bore section (14, 15) to the respectively adjacent segment (2, 4 or 3), which has a guide bush (13, 13.1) through which the screw bolt (9) is inserted.
2. Welle nach Anspruch 1, dadurch gekennzeichnet, dass eine Tiefe (t) des Aufnahmeraumes (12) etwa der Hälfte einer2. Shaft according to claim 1, characterized in that a depth (t) of the receiving space (12) about half a
Länge (1) der Führungsbuchse (13) entspricht.Length (1) of the guide bush (13) corresponds.
3. Welle nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Führungsbuchse aus nicht-rostendem Stahl besteht.3. Shaft according to claim 1 or 2, characterized in that the guide bush consists of stainless steel.
4. Welle nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass jedes Segment (2, 3, 4) aus einem Hülsenmantel (6) mit Axialbohrung (5) besteht.4. Shaft according to one of claims 1 to 3, characterized in that each segment (2, 3, 4) consists of a sleeve jacket (6) with an axial bore (5).
5. Welle nach wenigstens einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß an das Segment (2) ein Anschlussflansch (26) auf einer Getriebewelle (27) verbunden ist.5. Shaft according to at least one of claims 1 to 4, characterized in that on the segment (2) Connection flange (26) on a gear shaft (27) is connected.
6. Welle nach wenigstens einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das Segment (3.1) direkt über Verbindungsschrauben (31) mit Führungsbuchse mit einem Getriebeflansch (26.1) verbunden sind. 6. Shaft according to at least one of claims 1 to 6, characterized in that the segment (3.1) are connected directly via connecting screws (31) with guide bushing to a gear flange (26.1).
EP95941676A 1994-12-14 1995-12-06 Spindle, in particular extrusion spindle, composed of segments Withdrawn EP0809567A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4444370 1994-12-14
DE4444370A DE4444370A1 (en) 1994-12-14 1994-12-14 Device for the thermal, mechanical, chemical and / or physical treatment of a product
PCT/EP1995/004790 WO1996018488A1 (en) 1994-12-14 1995-12-06 Spindle, in particular extrusion spindle, composed of segments

Publications (1)

Publication Number Publication Date
EP0809567A1 true EP0809567A1 (en) 1997-12-03

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ID=6535693

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95941676A Withdrawn EP0809567A1 (en) 1994-12-14 1995-12-06 Spindle, in particular extrusion spindle, composed of segments

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EP (1) EP0809567A1 (en)
JP (1) JP3515121B2 (en)
AU (1) AU4302496A (en)
CA (1) CA2207685A1 (en)
CZ (1) CZ183397A3 (en)
DE (1) DE4444370A1 (en)
HU (1) HUT77890A (en)
NO (1) NO972718L (en)
WO (1) WO1996018488A1 (en)

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DE10044776A1 (en) * 2000-09-09 2002-04-04 Wolfgang Richter Two-part press screw
EP1262303A1 (en) * 2001-05-28 2002-12-04 Coperion Buss AG Working member for a mixing, kneading or conveyor device
DE102004052055B4 (en) 2004-10-26 2014-11-20 Blach Verwaltung Gmbh & Co.Kg extruder
FI121656B (en) * 2009-04-09 2011-02-28 Elematic Group Oy Concrete mass feed screw, method for producing feed screw and sliding casting equipment
DE102014200577B3 (en) * 2014-01-15 2015-05-28 Röhren- Und Pumpenwerk Bauer Ges.M.B.H. Pressing screw, press screw separator, wear element and method for producing a press screw
DE102015006479A1 (en) * 2015-05-22 2016-11-24 Reifenhäuser GmbH & Co. KG Maschinenfabrik Screw for use in an extruder and extruder
DE102016011978A1 (en) 2016-10-10 2018-04-12 Reifenhäuser GmbH & Co. KG Maschinenfabrik Screw for use in an extruder and extruder
DE102021103824A1 (en) 2021-02-18 2022-08-18 Harburg-Freudenberger Maschinenbau Gmbh Conveying device for a pressing device and pressing device
DE102021112163A1 (en) 2021-05-10 2022-11-10 Extruder Experts Gmbh & Co. Kg Method of making an extruder screw and screw segment

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GB1451443A (en) * 1972-07-12 1976-10-06 Reyrolle Parsons Ltd Bolted flange shaft couplings
DE2626998A1 (en) * 1976-06-16 1977-12-29 Demag Kunststofftech Multisection, self-supporting plasticising screw for extruder - has axially bored, exchangeable sections with tie rod
DE2924462A1 (en) * 1979-06-18 1981-01-22 Josef A Blach MATERIAL PROCESSING SHAFT FOR MACHINES FOR THE PROCESSING OF SOLID, LIQUID, PLASTIC AND / OR TOOTH-VISCOSE MATERIALS
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CH674474A5 (en) * 1987-12-07 1990-06-15 Max Gutknecht

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CZ183397A3 (en) 1997-12-17
CA2207685A1 (en) 1996-06-20
NO972718L (en) 1997-08-14
DE4444370A1 (en) 1996-06-20
JP3515121B2 (en) 2004-04-05
NO972718D0 (en) 1997-06-12
JPH11511700A (en) 1999-10-12
HUT77890A (en) 1998-09-28
AU4302496A (en) 1996-07-03

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