WO1996018488A1 - Welle, insbesondere extruderwelle, die aus segmenten zusammengesetzt ist - Google Patents
Welle, insbesondere extruderwelle, die aus segmenten zusammengesetzt ist Download PDFInfo
- Publication number
- WO1996018488A1 WO1996018488A1 PCT/EP1995/004790 EP9504790W WO9618488A1 WO 1996018488 A1 WO1996018488 A1 WO 1996018488A1 EP 9504790 W EP9504790 W EP 9504790W WO 9618488 A1 WO9618488 A1 WO 9618488A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- shaft
- segments
- segment
- bore
- extruder
- Prior art date
Links
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.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP95941676A EP0809567A1 (de) | 1994-12-14 | 1995-12-06 | Welle, insbesondere extruderwelle, die aus segmenten zusammengesetzt ist |
CZ971833A CZ183397A3 (en) | 1994-12-14 | 1995-12-06 | Shaft, particularly an extrusion shaft of an apparatus for heat, mechanical, chemical and/or physical treatment of a product |
JP51822596A JP3515121B2 (ja) | 1994-12-14 | 1995-12-06 | 複数個のセグメントより成る押し出し装置 |
AU43024/96A AU4302496A (en) | 1994-12-14 | 1995-12-06 | Spindle, in particular extrusion spindle, composed of segments |
NO972718A NO972718L (no) | 1994-12-14 | 1997-06-12 | Spindel, særlig ekstrusjonsspindel, sammensatt av segmenter |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4444370A DE4444370A1 (de) | 1994-12-14 | 1994-12-14 | Vorrichtung zum thermischen, mechanischen, chemischen und/oder physikalischen Behandeln eines Produktes |
DEP4444370.6 | 1994-12-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996018488A1 true WO1996018488A1 (de) | 1996-06-20 |
Family
ID=6535693
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1995/004790 WO1996018488A1 (de) | 1994-12-14 | 1995-12-06 | Welle, insbesondere extruderwelle, die aus segmenten zusammengesetzt ist |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0809567A1 (de) |
JP (1) | JP3515121B2 (de) |
AU (1) | AU4302496A (de) |
CA (1) | CA2207685A1 (de) |
CZ (1) | CZ183397A3 (de) |
DE (1) | DE4444370A1 (de) |
HU (1) | HUT77890A (de) |
NO (1) | NO972718L (de) |
WO (1) | WO1996018488A1 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10044776A1 (de) * | 2000-09-09 | 2002-04-04 | Wolfgang Richter | Zweigeteilte Pressschnecke |
EP1262303A1 (de) * | 2001-05-28 | 2002-12-04 | Coperion Buss AG | Arbeitsorgan für eine Misch-und/oder Knet- und/oder Fördereinrichtung |
DE102004052055B4 (de) | 2004-10-26 | 2014-11-20 | Blach Verwaltung Gmbh & Co.Kg | Extruder |
FI121656B (fi) * | 2009-04-09 | 2011-02-28 | Elematic Group Oy | Betonimassan syöttöruuvi, menetelmä syöttöruuvin valmistamiseksi sekä liukuvalulaitteisto |
DE102014200577B3 (de) * | 2014-01-15 | 2015-05-28 | Röhren- Und Pumpenwerk Bauer Ges.M.B.H. | Pressschnecke, Pressschneckenseparator, Verschleißelement und Verfahren zum Herstellen einer Pressschnecke |
DE102015006479A1 (de) * | 2015-05-22 | 2016-11-24 | Reifenhäuser GmbH & Co. KG Maschinenfabrik | Schnecke zum Einsatz in einem Extruder sowie Extruder |
DE102016011978A1 (de) | 2016-10-10 | 2018-04-12 | Reifenhäuser GmbH & Co. KG Maschinenfabrik | Schnecke zum Einsatz in einem Extruder und Extruder |
DE102021103824A1 (de) | 2021-02-18 | 2022-08-18 | Harburg-Freudenberger Maschinenbau Gmbh | Fördereinrichtung für eine Vorrichtung zum Pressen und Vorrichtung zum Pressen |
DE102021112163A1 (de) | 2021-05-10 | 2022-11-10 | Extruder Experts Gmbh & Co. Kg | Verfahren zum Herstellen einer Extruderschnecke und Schneckensegment |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2036010A1 (en) * | 1970-07-21 | 1972-02-03 | Werner & Pfleiderer | Extruder screw - with replaceable sections for plastics working |
GB1451443A (en) * | 1972-07-12 | 1976-10-06 | Reyrolle Parsons Ltd | Bolted flange shaft couplings |
DE2626998A1 (de) * | 1976-06-16 | 1977-12-29 | Demag Kunststofftech | Mehrteilige, freitragende plastifizierschnecke fuer kunststoffe verarbeitende maschinen |
DE2924462A1 (de) * | 1979-06-18 | 1981-01-22 | Josef A Blach | Materialbearbeitungswelle fuer maschinen zur bearbeitung fester, fluessiger, plastischer und/oder zaehviskoser materialien |
EP0040832A1 (de) * | 1980-05-28 | 1981-12-02 | ALSTHOM-ATLANTIQUE Société anonyme dite: | Kupplungseinrichtung für zwei Rotoren |
DE3714506A1 (de) * | 1987-04-30 | 1988-11-10 | Wilfried Schraufstetter | Formschluessige verbindung zweier koaxialer wellenteile, insbesondere hohlwellenteile |
CH674474A5 (de) * | 1987-12-07 | 1990-06-15 | Max Gutknecht |
-
1994
- 1994-12-14 DE DE4444370A patent/DE4444370A1/de not_active Withdrawn
-
1995
- 1995-12-06 JP JP51822596A patent/JP3515121B2/ja not_active Expired - Lifetime
- 1995-12-06 HU HU9702295A patent/HUT77890A/hu unknown
- 1995-12-06 CZ CZ971833A patent/CZ183397A3/cs unknown
- 1995-12-06 WO PCT/EP1995/004790 patent/WO1996018488A1/de not_active Application Discontinuation
- 1995-12-06 AU AU43024/96A patent/AU4302496A/en not_active Abandoned
- 1995-12-06 EP EP95941676A patent/EP0809567A1/de not_active Withdrawn
- 1995-12-06 CA CA002207685A patent/CA2207685A1/en not_active Abandoned
-
1997
- 1997-06-12 NO NO972718A patent/NO972718L/no unknown
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2036010A1 (en) * | 1970-07-21 | 1972-02-03 | Werner & Pfleiderer | Extruder screw - with replaceable sections for plastics working |
GB1451443A (en) * | 1972-07-12 | 1976-10-06 | Reyrolle Parsons Ltd | Bolted flange shaft couplings |
DE2626998A1 (de) * | 1976-06-16 | 1977-12-29 | Demag Kunststofftech | Mehrteilige, freitragende plastifizierschnecke fuer kunststoffe verarbeitende maschinen |
DE2924462A1 (de) * | 1979-06-18 | 1981-01-22 | Josef A Blach | Materialbearbeitungswelle fuer maschinen zur bearbeitung fester, fluessiger, plastischer und/oder zaehviskoser materialien |
EP0040832A1 (de) * | 1980-05-28 | 1981-12-02 | ALSTHOM-ATLANTIQUE Société anonyme dite: | Kupplungseinrichtung für zwei Rotoren |
DE3714506A1 (de) * | 1987-04-30 | 1988-11-10 | Wilfried Schraufstetter | Formschluessige verbindung zweier koaxialer wellenteile, insbesondere hohlwellenteile |
CH674474A5 (de) * | 1987-12-07 | 1990-06-15 | Max Gutknecht |
Also Published As
Publication number | Publication date |
---|---|
AU4302496A (en) | 1996-07-03 |
DE4444370A1 (de) | 1996-06-20 |
EP0809567A1 (de) | 1997-12-03 |
JPH11511700A (ja) | 1999-10-12 |
NO972718D0 (no) | 1997-06-12 |
CA2207685A1 (en) | 1996-06-20 |
JP3515121B2 (ja) | 2004-04-05 |
CZ183397A3 (en) | 1997-12-17 |
HUT77890A (hu) | 1998-09-28 |
NO972718L (no) | 1997-08-14 |
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