EP0134900B1 - Strangpresse mit einem Drehkolben - Google Patents

Strangpresse mit einem Drehkolben Download PDF

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Publication number
EP0134900B1
EP0134900B1 EP84105856A EP84105856A EP0134900B1 EP 0134900 B1 EP0134900 B1 EP 0134900B1 EP 84105856 A EP84105856 A EP 84105856A EP 84105856 A EP84105856 A EP 84105856A EP 0134900 B1 EP0134900 B1 EP 0134900B1
Authority
EP
European Patent Office
Prior art keywords
press
rotor
mass
circular rotor
circular
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.)
Expired
Application number
EP84105856A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0134900A1 (de
Inventor
Willy Schmidt
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.)
Ceramtec GmbH
Original Assignee
Ceramtec 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 Ceramtec GmbH filed Critical Ceramtec GmbH
Priority to AT84105856T priority Critical patent/ATE33582T1/de
Publication of EP0134900A1 publication Critical patent/EP0134900A1/de
Application granted granted Critical
Publication of EP0134900B1 publication Critical patent/EP0134900B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/06—Vacuum

Definitions

  • the invention relates to a press for the production of plastic ceramic blanks, in particular ceramic levers for insulators, with the features according to the preamble of patent claim 1.
  • CH-A-334552 draws attention to the shortcomings and disadvantages of screw presses, e.g. the low efficiency and in particular the disadvantageous formation of an “S” structure in the strand of the pressed mass, which leads to a high scrap in the ceramic industry. Nevertheless, the extrusion press described there does not remedy all difficulties, since the mass supplied by the feed roller is pressed into the adjoining mouthpiece by the work roller in an uncontrolled manner.
  • the rotor used is neither circular nor eccentric. Force-controlled mass transport walkways are missing.
  • a screwless extrusion press which has a roller-shaped rotor, the so-called rotor.
  • This roller-shaped runner is provided over its entire length with axially normal ring grooves in which the plastic masses are conveyed in the direction of the circumference of the runner.
  • the roller-shaped rotor rotates with little play in a lying cylindrical housing, with a feed roller filling the ring grooves.
  • the circular rotor is not eccentrically mounted. Tangential wipers are arranged in the individual grooves, which remove the plastic mass at the outlet of the roller and out of the grooves. There is only mass transport and no pre-compression.
  • a press of the type mentioned for the production of ceramic blanks which has a device for feeding the ceramic starting mass and a circular rotor arranged concentrically in a rotor housing, which is used for mass transport and carries at least one positively controlled mass transport web . Pre-compaction of the ceramic mass is not possible with this press.
  • DE-B-1229279 a press for processing plastic masses is known. It contains an eccentrically arranged conveyor roller (rotor) which, together with the housing, forms a tapering kneading space. Since the rotor is not circular, the scraper must be movably arranged for the mass.
  • the housing is arranged centrally to the rotor near the outlet opening.
  • the new press does not have the other disadvantages of the screw press, in particular its high friction and high energy consumption, even in those areas of application in which the S-shaped twisting of the hub due to the screw transport is not important.
  • the friction on the surfaces of the circular rotor that are in contact with plastic masses is low compared to that of screw presses.
  • the press can easily be provided with a vacuum space according to the state of the art, so that the problems of ventilation of a special quality cannot arise.
  • the metering screw 10 is followed, as in the prior art, by a slotted plate 11 in which the plastic mass is divided into chips.
  • the slot plate 11 primarily has the task of sealing a subsequent vacuum space 6 towards the mass loading side. In the vacuum chamber 6, the chips falling into it are vented;
  • a spray device 16 can also be used for plastic masses in which inadmissible dehumidification can occur in the vacuum space.
  • the mass chips reach within the vacuum space 6 to a metering roller 1, which feeds a circular rotor 3.
  • the metering roller 1 (which may also be absent) serves primarily to prevent an undesirable mass build-up in the vacuum space 6.
  • the circular rotor 3 with its mass transport webs 4 (still to be explained) sweeps over the entire vacuum space 6 up to the wall opposite the circular rotor 3.
  • the circular rotor 3 is mounted in the rotor housing 2.
  • the rotor housing 2 is preferably cylindrical.
  • a different rotor housing shape can be selected, for which the circular rotor with the mass transport webs is then correspondingly designed.
  • the mass transport web 4 is positively guided along the guideway 14 in the rotor housing 2.
  • the mass transport webs 4 are sliders that slide back and forth in the circular rotor.
  • the sliders can also be designed as Maltese cross bars.
  • the eccentricity of the circular rotor 3 in the rotor housing 2 is such that a tapering channel is formed between the two components.
  • a mass transport segment 7 is formed between two mass transport webs 4, the greatest width of which occurs opposite the distributor roller and which tapers in the direction of an outlet cross section 8 A.
  • the outlet cross section 8 A (as in FIG. 1) is arranged such that it lies approximately 90 ° to the greatest eccentricity of the circular rotor 3. In this way, the desired outlet cross section is formed without adjustment work.
  • a further reduction in the outlet cross section beyond the dimension determined on the basis of the eccentricity is made possible by an adjustable outlet cross section slide 8.
  • the size of the outlet cross section 8 A also influences the compression of the plastic mass.
  • the mass supplied via the feed screw 10 and the speed of the circular rotor are also influenced.
  • An outlet sector 15 opens up behind the outlet cross section 8 A, which extends to a doctor blade 13. This is a defined section on the circumference of the rotor housing 2.
  • the size of the outlet sector 15 is determined by the eccentricity of the circular rotor and the diameter ratio of the circular rotor to the rotor housing.
  • the positively controlled mass transport webs 4 spread the mass quantity supplied by the mass transport segment in the desired layer thickness.
  • the outlet sector 15 is followed by a mouthpiece 5 in which a lever is formed from the plastic mass, the precompacted mass being spread over the surface.
  • the mass quantity delivered per mass transport segment 7 is decisive for the spreading thickness.
  • FIGS. 2A and 2B A preferred mouthpiece is shown in FIGS. 2A and 2B which, in cooperation with the circular rotor 3, is capable of taking into account the special features of the lever which is created with the aid of the circular rotor. Round levers are desirable for use in the ceramic industry in the manufacture of insulators. However, other shapes of levers can of course also be produced, depending on the intended use.
  • the mouthpiece 5 contains, as an essential component in the preferred embodiment, a part 20 with an angular entrance and a round exit that is directly connected to the exit sector 15. The transition from the angular - usually quadrangular - part to the round part occurs in that the angular part is designed as a funnel with a slope of at least 30 °.
  • the angular part is kept very short and much shorter than the adjoining round part 21.
  • a texture centering mouthpiece 24 is advantageously inserted between the outlet of part 20 and the longer round part 21. This mouthpiece 24 can be rotated and has a sickle-shaped shape segment 25 attached to the inside for controlling the central course of the texture.
  • the round part 21 tapers in a further, conical funnel 22 to the desired outlet dimension.
  • the plastic blank which can be removed at the end of the mouthpiece 5 has a central texture profile and that at undesired S-shaped texture profile of a screw press is eliminated for many purposes.
  • the press according to the invention can advantageously be perfected by additional measures.
  • the mass transport webs 4 are positively guided along the rotor housing 2, whereby they are positively controlled by a guideway 14.
  • a guideway 14 in the end walls of the rotor housing 2 ensures a definable distance between the mass transport webs 4 and the inner wall of the rotor housing 2.
  • the guideway 14 for the mass transport webs can also be arranged in the interior of the circular rotor 3 corresponding to the rotor housing 2. Since the mass transport webs 4 move back and forth in the circular rotor following the eccentricity, a seal 26 should if possible be provided between the mass transport webs 4 and the circular rotor in order to prevent the deposition and penetration of ceramic mass.
  • the ceramic mass compacted in the respective mass transport segment 7 is detached from the circular rotor 3 by a stripping knife 13 arranged at the upper end of the exit sector (15). It is advantageous if the doctor blade 13 automatically adjusts itself due to the back pressure prevailing in the mouthpiece, so that the wear during operation of the press can be compensated for.
  • a resilient mass pressing device 19 can ensure that returning mass residues remain stuck in the rotor and mass transport web area. An uncontrolled escape of such residual masses in the vacuum space 6 is thus prevented.
  • a sheet metal is used for this, which runs tangentially to the circle described by the mass transport bars.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Processing Of Solid Wastes (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Press Drives And Press Lines (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
EP84105856A 1983-07-27 1984-05-23 Strangpresse mit einem Drehkolben Expired EP0134900B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84105856T ATE33582T1 (de) 1983-07-27 1984-05-23 Strangpresse mit einem drehkolben.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3327115A DE3327115C2 (de) 1983-07-27 1983-07-27 Presse zur Herstellung von plastischen Rohlingen
DE3327115 1983-07-27

Publications (2)

Publication Number Publication Date
EP0134900A1 EP0134900A1 (de) 1985-03-27
EP0134900B1 true EP0134900B1 (de) 1988-04-20

Family

ID=6205068

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84105856A Expired EP0134900B1 (de) 1983-07-27 1984-05-23 Strangpresse mit einem Drehkolben

Country Status (10)

Country Link
US (1) US4759707A (enrdf_load_stackoverflow)
EP (1) EP0134900B1 (enrdf_load_stackoverflow)
JP (1) JPS6044304A (enrdf_load_stackoverflow)
AT (1) ATE33582T1 (enrdf_load_stackoverflow)
CS (1) CS249141B2 (enrdf_load_stackoverflow)
DD (1) DD161218A5 (enrdf_load_stackoverflow)
DE (2) DE3327115C2 (enrdf_load_stackoverflow)
IN (1) IN160781B (enrdf_load_stackoverflow)
NO (1) NO158369C (enrdf_load_stackoverflow)
ZA (1) ZA844047B (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH039511U (enrdf_load_stackoverflow) * 1989-06-12 1991-01-29
US20180100395A1 (en) * 2016-10-10 2018-04-12 Stewart Systems Baking, LLC Vane Powered Rotor System

Family Cites Families (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE50009C (de) * Firma A. RiEBECK'sche Montan Werke, Aktiengesellschaft in Halle a. d. Saale Mit Schaufeln versehene Trommel zur Vorschiebung des Prefsgutes in Ziegelpressen
DE274912C (enrdf_load_stackoverflow) *
US1848754A (en) * 1932-03-08 lanzerotti-spina
CA645239A (en) * 1962-07-24 H. Davey Paul Wear-resistant vane for rotary compressors
US947013A (en) * 1909-04-15 1910-01-18 John A Dowd Rotary press.
US1000371A (en) * 1911-03-24 1911-08-15 Gilbert Brickley Rotary engine.
FR586263A (fr) * 1924-09-20 1925-03-20 Duchscher & Cie Presse continue rotative à pistons
CH147091A (de) * 1928-09-29 1931-05-31 Haendle & Soehne Karl Strangpresse.
DE486214C (de) * 1928-09-30 1929-11-13 Haendle & Soehne Karl Strangpresse fuer teigige Massen, besonders fuer Ziegelgut
DE581297C (de) * 1932-06-10 1933-07-25 Richard Raupach Maschinenfabri Strangpresse fuer keramisches Gut und andere plastische Massen
US2046873A (en) * 1934-11-28 1936-07-07 Harry A Garrison Rotary pump
US2125283A (en) * 1936-05-06 1938-08-02 Leo S Madlem Pump for semifluids
US2352941A (en) * 1939-03-08 1944-07-04 Curtis Pump Co Offset rotor vane pump
US2353965A (en) * 1941-06-18 1944-07-18 Meador Calender Corp Rotary pump or compressor
AT171807B (de) * 1949-05-20 1952-07-10 Benz & Hilgers Gmbh Dosier- und Abfüllvorrichtung für Butterform- und -verpackungsmaschinen
US2617167A (en) * 1950-10-31 1952-11-11 Walter V Johnson Method and apparatus for extruding and briquetting coal and other materials
DE1019964B (de) * 1952-01-14 1957-11-21 Ludwig Maier Vorrichtung zum Foerdern von in teigigem Zustand befindlichen Stoffen oder Stoffgemischen, insbesondere zum Foerdern von Sumpfkalk aus einer Grube
CH334552A (de) * 1955-06-10 1958-12-15 Keramostroj Narodni Podnik Strangpresse
DE1229279B (de) * 1962-12-07 1966-11-24 Helmut Alder Dipl Ing Strangpresse zum Verarbeiten von plastischen oder plastifizierbaren Massen
US3964447A (en) * 1974-08-12 1976-06-22 Michel Normandin Vane-type rotary internal combustion engine
US3954358A (en) * 1974-08-16 1976-05-04 Michel Normandin Compressor
DE2601347A1 (de) * 1976-01-15 1977-07-28 Wibau Gmbh Pumpe, insbesondere zur foerderung von zementbeton o.dgl.
US4385873A (en) * 1980-10-07 1983-05-31 Richter Hans H Rotary vane type pump or motor and the like with circular chamber portions
US4432711A (en) * 1980-11-07 1984-02-21 Nippon Soken, Inc. Vane pump with cylinder profile defined by cycloid curves
DE3046155A1 (de) * 1980-12-06 1982-07-22 Sommer, geb. Heyd, Ursula, 7101 Untergruppenbach Rotationsschwenkfluegelpumpe
US4413973A (en) * 1981-06-24 1983-11-08 Automation International Corp. Extrusion die
JPS5867989A (ja) * 1981-10-16 1983-04-22 Nippon Denso Co Ltd 回転式圧縮機

Also Published As

Publication number Publication date
IN160781B (enrdf_load_stackoverflow) 1987-08-01
NO841295L (no) 1985-01-28
ATE33582T1 (de) 1988-05-15
DE3327115C2 (de) 1986-06-26
DE3470479D1 (en) 1988-05-26
NO158369B (no) 1988-05-24
ZA844047B (en) 1985-02-27
CS249141B2 (en) 1987-03-12
NO158369C (no) 1988-08-31
EP0134900A1 (de) 1985-03-27
DE3327115A1 (de) 1985-02-14
DD161218A5 (de) 1985-06-26
US4759707A (en) 1988-07-26
JPS6044304A (ja) 1985-03-09
JPS6221604B2 (enrdf_load_stackoverflow) 1987-05-13

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