EP0557919A1 - Dispositif pour mélanger et/ou malaxer des matériaux - Google Patents

Dispositif pour mélanger et/ou malaxer des matériaux Download PDF

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Publication number
EP0557919A1
EP0557919A1 EP93102734A EP93102734A EP0557919A1 EP 0557919 A1 EP0557919 A1 EP 0557919A1 EP 93102734 A EP93102734 A EP 93102734A EP 93102734 A EP93102734 A EP 93102734A EP 0557919 A1 EP0557919 A1 EP 0557919A1
Authority
EP
European Patent Office
Prior art keywords
shaft
wedge
section
cross
wedges
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.)
Granted
Application number
EP93102734A
Other languages
German (de)
English (en)
Other versions
EP0557919B1 (fr
Inventor
Josef Blach
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0557919A1 publication Critical patent/EP0557919A1/fr
Application granted granted Critical
Publication of EP0557919B1 publication Critical patent/EP0557919B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/071—Fixing of the stirrer to the shaft
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/70—Interfitted members
    • Y10T403/7018—Interfitted members including separably interposed key
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/70—Interfitted members
    • Y10T403/7047—Radially interposed shim or bushing
    • Y10T403/7051—Wedging or camming

Definitions

  • the invention relates to a device for mixing and / or kneading viscous, plastic, powdery or granular substances, consisting of a drivable worm shaft arranged in a tubular housing opening, which consists of a shaft transmitting the torque and a plurality arranged one behind the other and by means of at least one Wedge with a substantially rectangular cross-section rotatably connected to this screw elements as a partial load, in which the wedge is arranged partly in the shaft and partly in the screw elements such that the long sides of the wedge cross section parallel to the tangent to the shaft circumference and its short sides in the right Angles to the long sides are arranged.
  • Such a device is known (DE - C - 813 154).
  • the aim of kneading with this device is to transfer as much energy as possible from the driven shaft to the material to be processed in the device, which is converted into work in it.
  • the wedge or wedges between the shaft and screw elements have the task of positioning the screw elements in the correct rotational position on the shaft and the torque during operation from the shaft via the screw elements in the material to be processed.
  • a swelling torsional load of the shaft occurs in only one direction, which stresses it for fatigue strength.
  • the maximum stress concentration that occurs in the keyway and whose maximum permissible value must not be exceeded is decisive for the load capacity of the shaft.
  • the wedge or the wedges are arranged in such a way that their cross-section lies radially and symmetrically about half each in the shaft and in the screw elements. This results in a groove base that is not optimally designed against the notch effect and poor accessibility of the groove for testing and cleaning.
  • the technical problem underlying the invention is therefore to improve the coupling between the shaft and screw elements and the performance of the shaft in such a way that the transmissible torque can be increased without increasing the dimensions.
  • FIG. 1 illustrates the cross section of a worm shaft machine which consists of the shaft 1 and a plurality of worm elements 2 arranged one behind the other and offset in the circumferential direction, of which only one worm element is shown.
  • the screw element 2 is positively coupled to the shaft by the wedges 3.
  • a worm shaft formed in this way is rotatable in the circular inner bore of the housing 4 arranged.
  • the worm shaft machine can also be designed so that it has several worm shafts, which requires a corresponding housing. If the worm shaft machine contains two worm shafts, the inner bore of the housing has the shape of a lying figure eight.
  • the worm shafts can either be driven in opposite directions or in the same direction.
  • arrow 5 shows the direction of rotation of the worm shaft. Operation in the opposite direction of rotation is not possible.
  • each wedge has an approximately rectangular cross section (apart from the rounded corners), which has an outer long side 6, an inner long side 7 and two short sides 8 and 9.
  • the wedge 3 is arranged in the shaft 1 and the screw element 2 such that its long side 6 is congruent with the tangent 10 to the shaft circumference.
  • the long side 7 of the wedge cross section is parallel to the long side 6 and the short sides are perpendicular to the long sides.
  • the position of the wedges in the shaft and the screw element shown in FIG. 2 is the optimal embodiment.
  • the short side 8 is completely immersed in the shaft 1 and the short side 9 is completely immersed in the screw element (not shown in FIG. 2). Therefore, the short sides 8 and 9 of the wedge are only subjected to pressure during operation.
  • the optimal position of the wedges 3 shown in FIG. 2 can be deviated to a certain extent without a significant deterioration in the wedge stress. This could happen, for example, by a slight parallel displacement of the wedge 3 outwards and to the side.
  • FIGS. 3a to 3d show different embodiments of an elastic wedge 3.
  • longitudinal grooves 11 running parallel to the longitudinal edges have been introduced into the wedge, one of which is open on the top and one on the underside of the wedge is.
  • oblique cuts 12 are present in the wedge.
  • the cuts 13 run parallel to the longitudinal edges of the wedge or also at right angles thereto.
  • the cuts 14 are only parallel to the longitudinal axes of the wedge, but have a different arrangement than in FIG. 3 c.
  • wedges 3 show another embodiment of the wedges 3. These wedges are not made of feathers, but solid. They also have long pages 6 and 7 and short pages 8 and 9. However, the short side 8 is designed in the manner of a fillet and an elastic tube 15 is arranged between it and the opposite groove wall in the shaft.
EP93102734A 1992-02-28 1993-02-22 Dispositif pour mélanger et/ou malaxer des matériaux Expired - Lifetime EP0557919B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4206219A DE4206219A1 (de) 1992-02-28 1992-02-28 Vorrichtung zum mischen und/oder kneten von werkstoffen
DE4206219 1992-02-28
US08/014,372 US5314245A (en) 1992-02-28 1993-02-05 Arrangement for mixing and kneading of materials with a screw shaft and at least one screw element connected with one another by wedges

Publications (2)

Publication Number Publication Date
EP0557919A1 true EP0557919A1 (fr) 1993-09-01
EP0557919B1 EP0557919B1 (fr) 1996-06-05

Family

ID=25912314

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93102734A Expired - Lifetime EP0557919B1 (fr) 1992-02-28 1993-02-22 Dispositif pour mélanger et/ou malaxer des matériaux

Country Status (5)

Country Link
US (1) US5314245A (fr)
EP (1) EP0557919B1 (fr)
JP (1) JP3176747B2 (fr)
AT (1) ATE138829T1 (fr)
DE (2) DE4206219A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4421514C2 (de) * 1994-06-20 1998-08-13 Krupp Werner & Pfleiderer Gmbh Schneckenmaschine mit aufsteckbaren Schneckensatzelementen
US7188992B2 (en) * 2003-07-30 2007-03-13 Americhem, Inc. Kneading element and related articles
US7192178B2 (en) * 2004-02-19 2007-03-20 J. C. Steele & Sons, Inc. Extrusion auger with removable auger segments and removal tool
FR2971190B1 (fr) * 2011-02-09 2013-03-08 Michelin Soc Tech Vis destinee a l'extrusion ou au melangeage d'elastomeres ou de produits plastiques pour la fabrication de pneumatiques
US20160061249A1 (en) * 2014-08-29 2016-03-03 Douglas H. Powell Adjustable shear key
DE102015005790A1 (de) * 2015-05-10 2016-11-10 Reifenhäuser GmbH & Co. KG Maschinenfabrik Schnecke zum Einsatz in einem Extruder, Verfahren zum Umrüsten einer Schnecke und Extruder

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE813154C (de) * 1949-09-29 1951-09-06 Bayer Ag Misch- und Knetvorrichtung
US3155056A (en) * 1959-08-26 1964-11-03 American Mach & Foundry Plastic or dough mixing apparatus
EP0001970A1 (fr) * 1977-11-12 1979-05-30 Werner & Pfleiderer Rotor de malaxage pour extrudeuses à vis
EP0422272A1 (fr) * 1989-10-12 1991-04-17 Josef A. Blach Dispositif de malaxage et pétrissage

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US118474A (en) * 1871-08-29 Improvement in shaft-couplings
US248400A (en) * 1881-10-18 Self-adjusting spline or key
US732738A (en) * 1901-12-02 1903-07-07 Charles Hammen Keys and key-seats for shafting.
US1460222A (en) * 1922-05-26 1923-06-26 Int Harvester Co Machine key
FR567959A (fr) * 1922-09-08 1924-03-12 Cie Forges Et Acieries Marine Dispositif pour la fixation des volants sur leur arbre
DE423465C (de) * 1923-04-11 1926-01-04 Bbc Brown Boveri & Cie Befestigung von Turbinenscheiben auf ihrer Welle durch federnde Ringe
FR761657A (fr) * 1933-09-19 1934-03-24 Protectoglass Ltd Perfectionnements aux procédés de fabrication des verres de sécurité
US2681239A (en) * 1950-08-16 1954-06-15 James W Gillen Pressure lock key
GB868469A (en) * 1957-05-16 1961-05-17 Huntley & Palmers Ltd Improvements in continuously operable apparatus for kneading plastic masses
US2994548A (en) * 1958-04-03 1961-08-01 Donald H Mcgogy Shaft keying device
FR1345563A (fr) * 1961-12-14 1963-12-13 Perfectionnement aux clavetages tangentiels
DE1180718B (de) * 1962-04-11 1964-11-05 Bayer Ag Knetvorrichtung mit zwei oder mehr Schnecken
FR1416667A (fr) * 1963-11-15 1965-11-05 Wmb Internat Ab Procédé pour la fabrication de corps poreux en matière thermoplastique
NL131340C (fr) * 1963-11-27 1900-01-01
DE6604741U (de) * 1966-02-11 1970-02-19 Werner & Pfleiderer Schneckenmaschine
US3421783A (en) * 1967-08-30 1969-01-14 Sakai Mfg Co Ltd Shock-absorbing key for rotary body
GB1215057A (en) * 1968-05-22 1970-12-09 Laminated Plastic Products Ltd Demountable agitator
DE2329514A1 (de) * 1973-06-06 1975-01-02 Mannesmann Meer Ag Auf einem wellenzapfen drehfest aufgestecktes zahnrad grossen durchmessers
DE2617864A1 (de) * 1976-04-23 1977-11-03 Nosta Normteile Und Stahlkeile Kraftuebertragungselement
SU724820A1 (ru) * 1978-09-06 1980-03-30 Orenbojm Boris D Шпоночное соединение
US4358215A (en) * 1980-10-20 1982-11-09 Rivin Evgeny I Key connection
DE3406665C2 (de) * 1984-02-24 1986-10-23 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München Schneckenextruder zur Verarbeitung von Explosivstoffen
US4875847A (en) * 1984-04-23 1989-10-24 Wenger Manufacturing, Inc. Twin-screw extruder having respective conical nose screw sections
GB8804313D0 (en) * 1988-02-24 1988-03-23 Apv Plc Improvements in/relating to mixers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE813154C (de) * 1949-09-29 1951-09-06 Bayer Ag Misch- und Knetvorrichtung
US3155056A (en) * 1959-08-26 1964-11-03 American Mach & Foundry Plastic or dough mixing apparatus
EP0001970A1 (fr) * 1977-11-12 1979-05-30 Werner & Pfleiderer Rotor de malaxage pour extrudeuses à vis
EP0422272A1 (fr) * 1989-10-12 1991-04-17 Josef A. Blach Dispositif de malaxage et pétrissage

Also Published As

Publication number Publication date
EP0557919B1 (fr) 1996-06-05
JPH07251053A (ja) 1995-10-03
US5314245A (en) 1994-05-24
JP3176747B2 (ja) 2001-06-18
DE4206219A1 (de) 1993-09-02
ATE138829T1 (de) 1996-06-15
DE59302775D1 (de) 1996-07-11

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