DE1729347A1 - Temperature control device for extruder screws intended for processing plastic masses - Google Patents
Temperature control device for extruder screws intended for processing plastic massesInfo
- Publication number
- DE1729347A1 DE1729347A1 DE19671729347 DE1729347A DE1729347A1 DE 1729347 A1 DE1729347 A1 DE 1729347A1 DE 19671729347 DE19671729347 DE 19671729347 DE 1729347 A DE1729347 A DE 1729347A DE 1729347 A1 DE1729347 A1 DE 1729347A1
- Authority
- DE
- Germany
- Prior art keywords
- temperature control
- screw
- control device
- sealing
- ring
- 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.)
- Pending
Links
Classifications
-
- 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
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
- B29C48/84—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders by heating or cooling the feeding screws
-
- 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
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
- B29C48/84—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders by heating or cooling the feeding screws
- B29C48/845—Heating
-
- 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
- B29C48/51—Screws with internal flow passages, e.g. for molten material
- B29C48/515—Screws with internal flow passages, e.g. for molten material for auxiliary fluids, e.g. foaming agents
-
- 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
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
- B29C48/84—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders by heating or cooling the feeding screws
- B29C48/85—Cooling
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
Temperiereinrichtung fUr zur Verarbeitung von plastischen Massen vorgesehene Extruderschnecken Die Erfindung bezieht sich auf eine Temperiereinrichtung fUr zur Verarbeitung von plastischen Massen, insbesondere thersoplastischen Kunststoffen oder dergl. vorgesehene Extruderschnecken, wobei ein umlaufendes Temperiermittel von Schnekkenende her durch ein eine Axialbohrung der Schnecko mit Abstand durchsetzendes und kurz vor ihrer Spitze endigendes Innenrohr aufgegeben wird. Temperature control device for processing plastic materials provided extruder screws The invention relates to a temperature control device For processing plastic materials, especially thermoplastic plastics or the like. Provided extruder screws, with a circulating temperature control means from the end of the worm through an axial bore of the worm with a distance and the inner tube ending shortly before its tip is abandoned.
Bei bekannten Extruderschnecken dieser Art erfolgt der Zu-und Ablauf des Temperiermittels Gber den rotierenden Schnekkenzapfen in axialer Richtung. Jedoch sind diese Anordnungen dann nicht anwendbar, wenn die freien Stirnflächen der Schneckenzapfen, wie es insbesondere bei Doppelschnecken der Fall ist, nicht anwendbar.In known extruder screws of this type, the inlet and outlet take place of the temperature control medium Gber the rotating screw journal in the axial direction. However these arrangements are not applicable if the free end faces of the screw journals, as is the case in particular with twin screws, not applicable.
Der Erfindung liegt die Aufgabe zugrunde, eine Temperiereinrichtung für insbesondere Doppelschneckenextruder der einleitend beschriebemen Art dahingehemd zu verbessern, dass die Undicktigkeiten bei der Zu- und Abfuhr des Temper@@r mittels ansgeschlossen werden. Dies wird erfindungsgemäas im wesentlichen dadurch erreicht, dass das Ende des Innenrohres im Bereich des Schneckenzapfens über einen oder mehrere Kanäle mit einer an den Temperiermittelzufluss angeschlossenen Ringkamn*r werbund-n ist, die in axialer Richtung beidseitig mittels die peripheren Kanalöffnungen zwischen sich einschliessenden Dichtungsringen abgeschlossen ist, und dass die Zentralbohrung in entsprechender Weise mit einer an den ~k"°e.Hr,,. The invention is based on the object of a temperature control device especially for twin-screw extruders of the type described in the introduction to improve that the leaks in the supply and discharge of the Temper @@ r means be connected. According to the invention, this is essentially achieved by that the end of the inner tube in the area of the screw journal over one or more Channels with a ring chamber connected to the temperature control medium supply is that in the axial direction on both sides by means of the peripheral channel openings between including sealing rings is complete, and that the central bore in a corresponding way with a to the ~ k "° e.Hr ,,.
Temperiermittel-Abfluss angesehlossenen Ringkammer verbunden ist. Diese Anordnung @rfglie die Vweausest@@@@@ ei@@@ Temgemie@nittel @bdiehtu@@ die @@@ Eud@@@@@nitt d@@ @@@@@@k@@naptW)Xttt*l<n!tIttwTL**AtftttttMttMMtMMttMjtLtMMMttSt'VWFtMBMttMH' gemi@@nittel @@@@ ieb@@ die @@@ @@@dä@ge@nitt due F@@@@k@@@ap-@enn frailäs@@ nä@@@ ublichen Dichtungen arbeispiel. Insbesondere erhält man dahn einen @ussepst wirk@@geveilem Dichtungsab@@biuss, wenn die die Ringkammer nach aussen abcehliessendem Dichtungsringe mit elastischen Dichtungalippen versehen sind, die sich unter Druck an die mantelfläche des Schneckenzapfens beidseitig der Kanäle anlegen. Tempering medium outflow attached annular chamber is connected. This arrangement @rfglie die Vweausest @@@@@ ei @@@ Temgemie @ nittel @ bdiehu @@ die @@@ Eud @@@@@ nitt d @@ @@@@@@ k @@ naptW) Xttt * l <n! TIttwTL ** AtftttttMttMMtMMttMjtLtMMMttSt'VWFtMBMttMH ' gemi @@ nittel @@@@ ieb @@ die @@@ @@@ dä @ ge @ nitt due F @@@@ k @@@ ap- @ enn frailäs @@ Nä @@@ usual seals arbeispiel. In particular, you get a @ussepst Wirk @@ geveilem Dichtungsab @@ biuss, if the sealing rings seal off the annular chamber to the outside are provided with elastic sealing lips, which attach to the outer surface under pressure of the worm journal on both sides of the channels.
Vorteilhaft besitzt der Dichtungsring ein in wesentlichen etwa winkeliges Profil, dessen einer Schenkel mittels eines ihm umgebenen Ringes gegen dem Schneckenzapfen und dessen anderer Schenkel mittels eines ringförmigen, in axialer Richtung wirkenden Federorganes gegen einen Stützring gedrückt wird. The sealing ring advantageously has an essentially approximately angular shape Profile, one leg of which by means of a ring surrounding it against the screw cone and its other leg by means of an annular, axially direction acting spring member is pressed against a support ring.
Weitere merkmale der Erfindung seien anhand der sich auf ein Ausführungsbeipielsbezichenden Zeichnung veranschaulicht.Further features of the invention are based on the reference to an exemplary embodiment Drawing illustrates.
Darin zeigt : Fis 1 einen Längsschnitt durch einen erfindungsgemäss ausgeführten Doppelschnecken-Extruder, während Fig. 2 den Temperiermittel-zufluss zu viner der beiden Schnecken nach Fiß. l in vergröetertem Maeetab wiedergibt.FIG. 1 shows a longitudinal section through a device according to the invention executed twin-screw extruder, while Fig. 2 shows the temperature control medium inflow to viner the two snails after Fiß. l reproduces in enlarged proportions.
Das Temperiermittel wird z.B. mittels eines Zulaufschlauches, der in der Zeichnung nicht dargestellt ist. in die Ringkammer 1 eingeleitet und flieset von dort nb-r eine oder mehrere Bohrungen 2 innerhalb des Schneckenzapfens in das Innenrohr 3, welches die Schnecke in Längsrichtung durchsetst, wie schor dargestellt wurde. Am Ende der Meterin-Zone bzw. The temperature control medium is supplied e.g. by means of an inlet hose, the is not shown in the drawing. introduced into the annular chamber 1 and flows from there nb-r one or more bores 2 within the worm journal into the Inner tube 3, which penetrates the screw in the longitudinal direction, as shown Schor became. At the end of the meterin zone or
Austragszone der Schnecke ist die SchneckenspStzc 4 vom Schneckenkörper 5 abschraubbar und normalerweise aittels einer mehrerer Dichtungssch eiben 6 hiergegen abgedichtet. The discharge zone of the screw is the screw part 4 from the screw body 5 unscrewable and normally by means of one of several sealing washers 6 against this sealed.
Die Schneckenspitze 4 besitzt innen eine erweiterte Zentralbohrung 7, die einen gleichmaaeigen Angriff des Tamperiapmittels an der thernisch basonders beanspruchten Schneckensp@ze 4 gestattet. Von dem dem Schneckenkörper zugewandten Ende der Zentralbohrung 7 sweigen ein oder mehrere Kanäle 5 nach aussen in eine die Meterinß-Zone der Schnlct in Louprichtung durchsetzende Ringkammer 9 ab, durch welche d « Temperiermittel zurückströmt. Vor Eintritt in die h an die lteteringsone anschliessende Kompressionszone 10 der Schnecke sind wiederum ein oder rehrere, von der Ringkammer 9 ausgehende, nach innen gerichtete Bohrungen vorgesehen, durch die das Temyeriermittel in die entwibohrung 12, soweit disse nicht durch das Innenrohr 3 besetzt ist, einströst. Von dieser Zentralbohrung 12 zweigen ir Pereich des Schneckenzapfens 13 ein oder cehrere, radial nach eueaen verlaufende Kanäle 14 ab, über die das Temperiermittel in die ausflutseitige Ringkammer 15 strömt, von wo es eue, gleichfalls x. P. eines in der Zeichnung nicht dargestellten Schlauchanschlusses, abgeleitet wird. The screw tip 4 has an enlarged central bore on the inside 7, which shows a uniform attack of the Tamperiapmittel on the thernisch basonders claimed Schneckensp @ ze 4 permitted. From the one facing the screw body One or more channels 5 sweep at the end of the central bore 7 after outside into an annular chamber penetrating the metering zone of the Schnlct in Loup direction 9, through which the temperature control medium flows back. Before entering the h to the lteteringsone subsequent compression zone 10 of the screw are in turn a or more, inwardly directed bores starting from the annular chamber 9, through which the Temyeriermittel in the dewatering 12, as far as this is not through the Inner tube 3 is occupied, redeems. From this central bore 12 branch ir area of the screw journal 13 has one or more channels extending radially towards the eueaen 14, via which the temperature control medium flows into the outflow-side annular chamber 15, from where it is new, also x. P. a hose connection not shown in the drawing, is derived.
Der Schneckenzapfen 13 ist ic Bereich der Kanäle ? und 15 von einer Kasette 16 umgeben, die im Zapfenlager so angeordnet, da aie radiale Bewegungen der Schnecke folgen kan sowie gegen Dreh- bzw. Axialbewegung gesichert ist. Dies hat den Vorteil, dass die noch zu beschreibende Dichtungeenordnung durch Bewegungen des Schneckenzapfens nicht zerstört werden kann.The screw journal 13 is ic area of the channels? and 15 of one Surrounding cassette 16, which is arranged in the journal bearing so that aie radial movements Can follow the worm and is secured against rotary or axial movement. this has the advantage that the still to be described sealing disorder is caused by movements of the screw cone cannot be destroyed.
Die Ringkammern 1 und 15 können z.B. aus in die Kasette 18 eingefresten Nuten bestehen. Zwischen sich echlieeeenwie eine water*. nacre Mut ein, in die ein am Schneckenzapfen flächig enliegendee Dichtungselement 17 eingesetzt ist.The annular chambers 1 and 15 can be frozen into the cassette 18, for example Grooves exist. Echlieeeen between them like a water *. nacre courage one into the one the sealing element 17 lying flat on the screw pin is inserted.
Nach aussen eind die Ringkammern 1 und 16 durch in entsprechende Aussparungen der Kasette 16 eingesetzte Dichtungaringe 18 abgedichtet, die ein winkeliges Profil besitzen, wobei der eine Schenkel 18' in der schor dargestellten @eise mittels der/ eines ihn umgebenden Ringes 19 mit einer in/@eichnung nicht bezeichneten Dichtungslippe gegen den Schenckenzapfen 13 gedrückt wird, wäarend der andere Schenkel 18@ von einer ringförmigen Feder@@ it @eichgalls win@ @@ Profil gegen einen Stützptung 21 gedrduckt wird. @etztener mn z.B. mittels eines Federringes 22 in den Aus@@unung der Kasette gehalten sein. To the outside and the annular chambers 1 and 16 through into corresponding ones Recesses of the cassette 16 inserted sealing rings 18 sealed, which an angular Have profile, with the one leg 18 'in the shor shown @eise by means the / a ring 19 surrounding it with a sealing lip not designated in / @ eichnung is pressed against the Schenckenzapfen 13, while the other leg 18 @ of a ring-shaped spring @@ it @eichgalls win @ @@ profile against a support 21 is pressed. The last mn e.g. by means of a spring washer 22 in the Aus @@ unung the cassette must be kept.
Vom Lagergehäuse 23 des Schneckenzapfens 13 besitzt die Kasette 16 noch einen gerinzen radialen Abstand, der einerseits ihre Radialbewegungen ermöglicht und rerscit3 den Abfluss eventueller Leckverluste des Temperiermittels gestattet. The cassette 16 has the bearing housing 23 of the worm journal 13 another small radial distance, which on the one hand enables their radial movements and rerscit3 allows the drainage of any leakage losses of the temperature control medium.
Zwischen dem antriebaseitigen Ende der Einzugszone ß der Schnecke und der Kasette 16 sind zwei weitere, flachig am Schneckenzapfen 13 anliegende Dichtungen 24 und 25 vorgeschn, die einen weiteren Dichtungsring 18, der ein winkelig « Profil hat und eit winer Dichtungtlippe am Schncckanzapfen anliegt, zwischen sich einschliessen. Wenigstens die Dichtung 24 sollte aus einem besonders dicht abschliessenden Material, s B. aus Teflon, bestehen, um einen Eintritt des eingezogenen Kunststoffpulvers in die Kasette 16 oder einen Austritt dos Kühlmittels aus ihr in die Einzugszone der Schnecke zuverlässig zu verhindern. Between the drive end of the feed zone ß of the screw and the cassette 16 are two further seals that lie flat against the screw journal 13 24 and 25 vorn, which has a further sealing ring 18, which has an angled «profile and ever since the sealing lip rests on the screw plug, enclose it between you. At least the seal 24 should be made of a particularly tightly sealing material, s B. made of Teflon, to prevent an entry of the drawn-in plastic powder into the cassette 16 or an outlet dos coolant from it into the feed zone reliably prevent the snail.
Die Erfindung ist nicht auf Doppelschnecken-Extruder beschrAnkt, sondern, wie unter Berücksichtigung der bisherigen Beschreibung ohne weiteres verstandlich ist, mit Vorteil ebenfalls bei Einschnecken-Extrudern anwendbar, wenn dies erforderlich oder zweckdienlich erschintThe invention is not limited to twin-screw extruders, but as easily understandable taking into account the previous description is, with advantage, also applicable to single-screw extruders, if necessary or seems appropriate
Claims (7)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DESC041755 | 1967-12-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1729347A1 true DE1729347A1 (en) | 1971-08-05 |
Family
ID=7436390
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19671729347 Pending DE1729347A1 (en) | 1967-12-27 | 1967-12-27 | Temperature control device for extruder screws intended for processing plastic masses |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1729347A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1131854B (en) * | 1959-04-30 | 1962-06-20 | Otto Koerner | Curtain support |
DE2241111A1 (en) * | 1972-08-22 | 1974-02-28 | Yvan Godar | Feeding multi screw plasticiser with granulates - through hopper with outlet shaped to give increased ratio of actual to maximum theoretical output |
FR2202779A1 (en) * | 1972-10-13 | 1974-05-10 | Preatoni E Temporiti | Injection moulding device having hydraulic motor - for driving feed screw, to which diathermal fluid is fed through a gland in a joint between motor and feed screw |
DE19716127C1 (en) * | 1997-04-17 | 1998-03-05 | Krauss Maffei Ag | Extruder screw |
DE10018754A1 (en) * | 2000-04-15 | 2001-10-25 | Thyssen Henschel Industrietech | Temperature control arrangement for twin extruder screw shafts comprises a coupling sleeve and collar with radial bores running to and from an axial bore with an internal return tube |
-
1967
- 1967-12-27 DE DE19671729347 patent/DE1729347A1/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1131854B (en) * | 1959-04-30 | 1962-06-20 | Otto Koerner | Curtain support |
DE2241111A1 (en) * | 1972-08-22 | 1974-02-28 | Yvan Godar | Feeding multi screw plasticiser with granulates - through hopper with outlet shaped to give increased ratio of actual to maximum theoretical output |
FR2202779A1 (en) * | 1972-10-13 | 1974-05-10 | Preatoni E Temporiti | Injection moulding device having hydraulic motor - for driving feed screw, to which diathermal fluid is fed through a gland in a joint between motor and feed screw |
DE19716127C1 (en) * | 1997-04-17 | 1998-03-05 | Krauss Maffei Ag | Extruder screw |
DE10018754A1 (en) * | 2000-04-15 | 2001-10-25 | Thyssen Henschel Industrietech | Temperature control arrangement for twin extruder screw shafts comprises a coupling sleeve and collar with radial bores running to and from an axial bore with an internal return tube |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE1502335A1 (en) | Screw press with variable damming section | |
DE2933512A1 (en) | SAMPLE INJECTION VALVE | |
CH660216A5 (en) | RING SHAPED SEAL AND THEIR USE IN AN EXTERNAL WIRE PIPE TURBINE. | |
DE1207073B (en) | Injection molding machine for processing thermoplastics | |
DE202016103160U1 (en) | Multi-way control valve with seal carrier | |
DE1729347A1 (en) | Temperature control device for extruder screws intended for processing plastic masses | |
DE1934779C3 (en) | Rotary displacement pump | |
DE2834895C2 (en) | Hydraulic mold clamping device with a pressure intensifier | |
DE2003035B2 (en) | Shaft seal | |
DE4014954C1 (en) | Housing for high pressure cleaning water jet - has internal angled nozzle which provides rotary action under pressure of water flow | |
DE2652549A1 (en) | SPRAY NOZZLE | |
DE3403686A1 (en) | Radial shaft sealing ring | |
DE3324630C2 (en) | Swivel joint | |
DE2203674A1 (en) | Screw extruder | |
DE2546805A1 (en) | SEAL RING AND METHOD OF MANUFACTURING IT | |
DE2849256C3 (en) | Mechanical seal | |
DE2064411C3 (en) | Rotor for cleaning devices for mechanical devices, small components and electronic circuit units | |
DE1629749A1 (en) | Extruder for thermoplastic resins | |
DE2341457A1 (en) | DRAIN COUPLING FOR A KOLK, FOUNTAIN OR SUCH COLLECTOR | |
CH670065A5 (en) | ||
DE2641328A1 (en) | LIQUID PUMP | |
CH560341A5 (en) | Pump arrangement with slide ring seal - incorporates pressure increase element in front of blocking circuit | |
DE3008491A1 (en) | Double-acting slip-ring seal - has elastic seal thrust axially against slip-ring stop by pressure difference | |
DE852230C (en) | Gap seal for tubular water turbines and pumps | |
DE3411312A1 (en) | Protection device for underwater bearings |