ES2186149T3 - Procedimiento y dispositivo para la vigilancia del grado de desgaste de un tornillo de compresion que transporta material plastificado. - Google Patents

Procedimiento y dispositivo para la vigilancia del grado de desgaste de un tornillo de compresion que transporta material plastificado.

Info

Publication number
ES2186149T3
ES2186149T3 ES98916613T ES98916613T ES2186149T3 ES 2186149 T3 ES2186149 T3 ES 2186149T3 ES 98916613 T ES98916613 T ES 98916613T ES 98916613 T ES98916613 T ES 98916613T ES 2186149 T3 ES2186149 T3 ES 2186149T3
Authority
ES
Spain
Prior art keywords
auger
housing
surveillance
transports
procedure
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 - Lifetime
Application number
ES98916613T
Other languages
English (en)
Inventor
Helmut Bacher
Helmuth Schulz
Georg Wendelin
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
Application granted granted Critical
Publication of ES2186149T3 publication Critical patent/ES2186149T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50Details of extruders
    • B29C48/74Bypassing means, i.e. part of the molten material being diverted into downstream stages of the extruder
    • B29C48/745Bypassing means, i.e. part of the molten material being diverted into downstream stages of the extruder for plasticising or homogenising devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/30Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/40Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft
    • B29B7/42Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
    • B29B7/428Parts or accessories, e.g. casings, feeding or discharging means
    • B29B7/429Screws
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/30Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/58Component parts, details or accessories; Auxiliary operations
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/30Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/58Component parts, details or accessories; Auxiliary operations
    • B29B7/72Measuring, controlling or regulating
    • B29B7/726Measuring properties of mixture, e.g. temperature or density
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/268Throttling of the flow, e.g. for cooperating with plasticising elements or for degassing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395Means 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50Details of extruders
    • B29C48/69Filters or screens for the moulding material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/92Measuring, controlling or regulating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92009Measured parameter
    • B29C2948/92019Pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92323Location or phase of measurement
    • B29C2948/92361Extrusion unit
    • B29C2948/9238Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/924Barrel or housing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/92514Pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92819Location or phase of control
    • B29C2948/92857Extrusion unit
    • B29C2948/92876Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92895Barrel or housing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/254Sealing means
    • B29C48/2545Sealing means for filters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50Details of extruders
    • B29C48/69Filters or screens for the moulding material
    • B29C48/693Substantially flat filters mounted at the end of an extruder screw perpendicular to the feed axis

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)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Sliding-Contact Bearings (AREA)
  • Control Of Conveyors (AREA)

Abstract

La invención se refiere a un proceso para la monitorización del grado de desgaste de un sinfín de compresión (8) que transporta un material plastificado, en particular, plástico, contra un elemento que ejerce una resistencia y que está situado en el alojamiento del sinfín (4). A este efecto, la presión del material transportado se mide en dos puntos dispuestos a intervalos a lo largo de la dirección del recorrido. Estos dos puntos están situados a ambos lados de un cuerpo de resistencia (12) hacia el que transporta el sinfín (8). La diferencia entre las dos presiones medidas se utiliza para presentar el grado de desgaste del sinfín (5) y de su alojamiento. El dispositivo para dicho fin tiene una abertura (18) que penetra la pared (20) del alojamiento (4) del sinfín (5) en la zona de su rosca o en la zona inmediatamente contigua a la misma. Una abertura adicional (19) penetra la pared de este alojamiento (4); ambas aberturas (18, 19) están dispuestas axialmente a una distancia entre sí. Un sensor de presión (22, 23) está unido a cada abertura (18, 19)
ES98916613T 1997-04-23 1998-04-20 Procedimiento y dispositivo para la vigilancia del grado de desgaste de un tornillo de compresion que transporta material plastificado. Expired - Lifetime ES2186149T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0069397A AT407855B (de) 1997-04-23 1997-04-23 Verfahren und vorrichtung zur überwachung des abnützungsgrades einer ein plastifiziertes material fördernden dichtschnecke

Publications (1)

Publication Number Publication Date
ES2186149T3 true ES2186149T3 (es) 2003-05-01

Family

ID=3497338

Family Applications (1)

Application Number Title Priority Date Filing Date
ES98916613T Expired - Lifetime ES2186149T3 (es) 1997-04-23 1998-04-20 Procedimiento y dispositivo para la vigilancia del grado de desgaste de un tornillo de compresion que transporta material plastificado.

Country Status (15)

Country Link
US (1) US6406174B2 (es)
EP (1) EP0977658B1 (es)
JP (1) JP3194750B2 (es)
KR (1) KR100347200B1 (es)
CN (1) CN1067327C (es)
AT (2) AT407855B (es)
AU (1) AU717470B2 (es)
BR (1) BR9809399B1 (es)
CA (1) CA2283743C (es)
DE (1) DE59805974D1 (es)
DK (1) DK0977658T3 (es)
ES (1) ES2186149T3 (es)
PT (1) PT977658E (es)
WO (1) WO1998047687A1 (es)
ZA (1) ZA983323B (es)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT406948B (de) * 1999-02-09 2000-10-25 Bacher Helmut Vorrichtung zur filterung thermoplastischen kunststoffmateriales
AU2002316850B8 (en) * 2001-05-30 2006-11-23 Evonik Rohm Gmbh Method and device for regulating pressure in a single-screw degassing extruder or in a cascade extruder
DE10354273B4 (de) * 2003-08-14 2005-07-07 Battenfeld Extrusionstechnik Gmbh Verfahren zur Verschleißerkennung bei Extrudermaschinen
AT503014B1 (de) * 2006-04-27 2007-07-15 Schulz Helmuth Vorrichtung zum extrudieren von thermoplastischem kunststoffgut
AT506298B1 (de) * 2008-02-20 2009-08-15 Schulz Helmuth Ing Vorrichtung zum extrudieren von thermoplastischem kunststoffgut
AT510024B1 (de) 2010-07-19 2012-01-15 Engel Austria Gmbh Plastifiziereinheit mit verschleissmesssensor
DE102013112971B3 (de) * 2013-11-25 2015-02-05 Leistritz Extrusionstechnik Gmbh Einrichtung und Verfahren zur Überprüfung des Aufbaus einer Extruderschnecke
WO2015113250A1 (zh) * 2014-01-29 2015-08-06 西门子公司 燃气轮机中导叶密封件磨损程度的监控方法
DE102017009046A1 (de) 2017-09-27 2019-03-28 Reifenhäuser GmbH & Co. KG Maschinenfabrik Zustandsüberwachungssystem, verfahren zum bestimmen eines abnutzungsgrads, wartungssteuerungsverfahren, betriebsführungs- und sicherheitssystem und extruder
DE102018100455B4 (de) * 2018-01-10 2020-08-20 KraussMaffei Extrusion GmbH Verfahren zum Betreiben einer Extrusionsanlage und Extrusionsanlage
AT525668B1 (de) * 2022-07-11 2023-06-15 Engel Austria Gmbh Plastifiziereinheit für eine Formgebungsmaschine

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL123360C (es) * 1960-11-15 1900-01-01
US3193877A (en) * 1962-04-02 1965-07-13 Eastman Kodak Co Multistage extrusion screw and alternate filters
DE1529811B2 (de) * 1965-06-03 1972-06-08 Barmag Barmer Maschinenfabrik Ag, 5600 Wuppertal Schneckenstrangpresse fuer thermoplastische kunststoffe
US3700247A (en) * 1971-08-16 1972-10-24 May V Latinen Flush cooling of shaft sealing screw means
JPS539721A (en) * 1976-07-15 1978-01-28 Shin Etsu Chem Co Ltd Tris-triorganosilylalkylphosphites
JPS6047797B2 (ja) * 1978-06-07 1985-10-23 ソニー株式会社 スピ−カシステム
CH667615A5 (de) * 1985-05-09 1988-10-31 Huemer Franz Xaver Extrusionsanlage zur herstellung von folien aus kunststoff.
DE3615586C1 (de) * 1986-05-09 1987-05-07 Berstorff Gmbh Masch Hermann Strangpressvorrichtung zum Herstellen von Kunststoffschmelzemischungen
JPS63139705A (ja) * 1986-12-02 1988-06-11 Mitsubishi Heavy Ind Ltd スクリユ式混練・搬送装置の異常検知方法
DE3702348A1 (de) * 1987-01-27 1988-08-04 Pluss Stauffer Ag Direktverarbeitung von polymer mit pulverfoermigen additiven in spritzgiessmaschinen
DE3744193C1 (de) * 1987-12-24 1989-01-26 Berstorff Gmbh Masch Hermann Verfahren und Extruder zum Entgasen thermoplastischer Kunststoffschmelzen ueber einen weiten Viskositaetsbereich
DE4017724C1 (es) * 1990-06-01 1991-03-07 Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover, De
US5419634A (en) * 1991-08-29 1995-05-30 Bacher; Helmut Apparatus for filtering and extruding synthetic plastic scrap material
JPH05309721A (ja) * 1992-05-06 1993-11-22 Japan Steel Works Ltd:The 押出機スクリュとシリンダの摩耗検知方法及び装置
JPH0647797A (ja) * 1992-07-29 1994-02-22 Sekisui Chem Co Ltd 押出機の制御方法
EP0701505B1 (de) * 1993-06-08 1996-09-18 BACHER, Helmut Vorrichtung zum entgasen von thermoplastischem kunststoff
DE4333233C2 (de) * 1993-09-30 1995-10-12 Berstorff Gmbh Masch Hermann Schmelzeabdichteinrichtung an Extrudern für thermoplastische Kunststoffe oder Kautschuk
US5630968A (en) * 1995-06-07 1997-05-20 The Japan Steel Works, Ltd. Water-injection foaming devolatilizing method

Also Published As

Publication number Publication date
AU717470B2 (en) 2000-03-30
CA2283743C (en) 2004-06-22
US20010040837A1 (en) 2001-11-15
ATE226138T1 (de) 2002-11-15
KR100347200B1 (ko) 2002-08-03
CN1252749A (zh) 2000-05-10
KR20010006315A (ko) 2001-01-26
ZA983323B (en) 1998-11-03
WO1998047687A1 (de) 1998-10-29
EP0977658A1 (de) 2000-02-09
BR9809399A (pt) 2000-10-24
JP3194750B2 (ja) 2001-08-06
CA2283743A1 (en) 1998-10-29
AU7011998A (en) 1998-11-13
CN1067327C (zh) 2001-06-20
AT407855B (de) 2001-07-25
EP0977658B1 (de) 2002-10-16
PT977658E (pt) 2003-02-28
US6406174B2 (en) 2002-06-18
BR9809399B1 (pt) 2009-01-13
JP2000510399A (ja) 2000-08-15
DE59805974D1 (de) 2002-11-21
ATA69397A (de) 2000-11-15
DK0977658T3 (da) 2003-02-17

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