DE2121305A1 - Adjustable throttle - for a twin screw press arranged between the screws and the extruder tool - Google Patents
Adjustable throttle - for a twin screw press arranged between the screws and the extruder toolInfo
- Publication number
- DE2121305A1 DE2121305A1 DE19712121305 DE2121305A DE2121305A1 DE 2121305 A1 DE2121305 A1 DE 2121305A1 DE 19712121305 DE19712121305 DE 19712121305 DE 2121305 A DE2121305 A DE 2121305A DE 2121305 A1 DE2121305 A1 DE 2121305A1
- Authority
- DE
- Germany
- Prior art keywords
- plane
- screws
- channels
- wedge
- pressure
- 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
- 238000001125 extrusion Methods 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 4
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000012438 extruded product Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means 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
- B29C48/40—Means 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 using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
- B29C48/402—Means 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 using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders the screws having intermeshing 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
- B29C48/395—Means 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
-
- 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
- B29C48/92—Measuring, controlling or regulating
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92009—Measured parameter
- B29C2948/92019—Pressure
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92009—Measured parameter
- B29C2948/92209—Temperature
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92323—Location or phase of measurement
- B29C2948/92466—Auxiliary unit, e.g. for external melt filtering, re-combining or transfer between units
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92514—Pressure
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
- B29C2948/926—Flow or feed rate
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92904—Die; Nozzle zone
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92961—Auxiliary unit, e.g. for external melt filtering, re-combining or transfer between units
-
- 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
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
-
- 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
- B29C48/268—Throttling of the flow, e.g. for cooperating with plasticising elements or for degassing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Einstellbare Drosselvorrichtung an Doppelschneckenpresse Die Erfindung betrIfft eine an einer Doppelschneckenpresse angebrachte einstellbare Drosselvorrichturig, die zwischen den Schnecken und einem Extrudierwerkzeug angebrecht ist. Bisher bekannte Drosselvorrichtungen haben den Nachteil, dass sie ein asymmetrisch in den Weg der zu extrudierenden, plastischen Masse hineinragendes Organ aufweisen oder die plastische Masse unter ungünstiger Beeinflussung des Cleschwindigkeitsprofils und des Druckverlaufes umlenken. Dies führt schliesslich zu schádlichen inneren Spannungen in der strömenden Masse. Die Drosseivorrichtung nach der Erfindung, welche die Behebung dieser Nachteile bezweckt, zeichnet sich dadurch aus, dass in ihrem Gehåuse zwei konische Kammern vorgschen sind, in welche konisch verjüngte Enden der beiden Schnecken hineinragen unter Bildung zweier konischer Ringkammern, die an ihren Spitzen in zwei Kanäle ausmünden, welche in einer zur Symmetrieebene s-s der beiden Schnecken senkrichten Ebenek-k auf einen achsialen Ausgangskanal konvergieren, der zu dem Extrudierwerkzeug führt, und dass ein eine Keilzunge aufweisender Drosselkörper vorgesehen ist, der in achsialer Richtung hin und her verschiebbar ist, so dass seine Keilzunge je nch ihrer Lage die Uebergänge der konvergierenden Kanä3 e in den Ausgangskanal mehr oder weniger, aber stets in gleicher Weise drosselt.Adjustable throttle device on twin screw press The invention concerns an adjustable throttle device attached to a twin screw press, which is attached between the screws and an extrusion tool. Previously known Throttle devices have the disadvantage that they are asymmetrical in the way of the have to be extruded, plastic mass protruding organ or the plastic Mass with an unfavorable influence on the speed profile and the pressure curve redirect. This ultimately leads to harmful internal tension in the flowing Dimensions. The throttle device according to the invention, which overcomes these disadvantages intended, is characterized by the fact that two conical chambers in its housing are provided, in which the tapered ends of the two screws protrude forming two conical annular chambers, which at their tips into two channels open out, which are perpendicular to the plane of symmetry s-s of the two screws Ebenek-k converge on an axial exit channel leading to the extrusion tool leads, and that a throttle body having a wedge tongue is provided which is displaceable back and forth in the axial direction, so that its wedge tongue depends their position the transitions of the converging channels into the exit channel more or less, but always throttles in the same way.
In der Zeichnung ist ein Ausführungsbeispiel des Erfindungsgegcnstandes dargestellt. Es ist: Fig. 1 ein Längsschnitt durch den ausgangsseitigen Teil eine Doppelschneckenpresse; Fig. 2 ein Schnitt durch die Drosselvorrichtung dieser Presse,-gemäss Linie II-II von Fig, 1; und Fig. 3 ein Schnitt gemäss Linie III-III von Fig. 2. The drawing shows an embodiment of the subject matter of the invention shown. It is: FIG. 1 a longitudinal section through the output-side part Twin screw press; 2 shows a section through the throttle device of this press, according to Line II-II of Figure 1; and FIG. 3 shows a section along line III-III of FIG. 2.
Im Gehause 1 einer Doppelschneckenpresse sind in üblicher Weise zwei gegenläufig angetriebene Schnecken 2 untergebracht. An den Ausgang des Pressegehäuses 1 ist der Eingang des Gehäuses 3 einer Drosselvorrichtung 4 angeflanscht, an dessen Ausgang ein Extrudierwerkzeug 5 üblicher Art angeschlossen ist, durch welcheseine von der Presse gelieferte plastische Masse beispielsweise zu einem Schlauch verformt wird. Die Drosselvorrichtung 4 bczweckt, eine einstellbare Stauwirkung in der Presse zu erzeugen und den Arbeitsdruck im Extrudierwerkzeug zu dosieren. In the housing 1 of a twin screw press there are two in the usual way housed screws 2 driven in opposite directions. At the exit of the press case 1, the inlet of the housing 3 of a throttle device 4 is flanged to which Output an extrusion tool 5 of the usual type is connected, through which a plastic mass supplied by the press is deformed into a tube, for example will. The throttle device 4 aims to have an adjustable accumulation effect in the press to generate and to dose the working pressure in the extrusion tool.
Das im vorliegenden Fall im wesentlichen aus einem massiven Zylinderkörper bestehende Gehäuse 3 weist eingangsseitig zwei konische Kammern 6 auf, in welche konisch verjüngte Enden 7 der Schnecken 2 hineinragen unter Bildung zwei konischer Ringkanäle 8, die in der Symmetrieebene s-s der Presse miteinander zusammenhängen und an ihren Spitzenin zwei Kanäle 9 von beispielsweise quadratischem Querschnitt ausmünden, die in einer zur Symmetrieebene s-s senkrechten Ebene k-k, der Zeichnungsebene von Fig. 1, liegen und symmetrisch auf einen achsial gerichteten Ausgangskanal 10 von beispielsweise rechteckigem Querschnitt konvergieren. In der Konvergenzebene k-k bildet daher das Gehäuse 3 einen Steg 11, der in der Symmetrieebene s-s mit den anderen Gehäuseteilen zusammenhängt. In the present case, this essentially consists of a solid cylinder body existing housing 3 has on the input side two conical chambers 6 into which conically tapered ends 7 of the screws 2 protrude to form two conical ones Ring channels 8, which are related to one another in the plane of symmetry s-s of the press and at their tips in two channels 9 of, for example, a square cross-section open out in a plane k-k perpendicular to the plane of symmetry s-s, the plane of the drawing 1, lie and symmetrically on an axially directed output channel 10 converge of, for example, a rectangular cross-section. In the plane of convergence k-k, the housing 3 therefore forms a web 11 which is in the plane of symmetry s-s related to the other housing parts.
In der Symmetrieebene s-s ist im Gehäuse 3 ein zur Konvergenzebene k-k senkrechter, durchgehender Kanal 12 von rechteckigem Querschnitt ausgespart. Im Kanal 12 ist ein Schieber l von Doppel-l-förmigem Profil verschiebbar, der sich in seiner Längsrichtung keilförmig verjüngt. Der eine, lrngere T-Halken 14 des Sclieberprofils greift in zwei vertikale Führungsnuten 15 ein, die an den beidseitig der Symmetrieebene s-s liegenden Begrenzungsebenen 16 dc als 12 vorgesehen sind. Der andere, kürzere T-Dalken 17 des Schieber profils greift in zwei geneigte Lumen 18 ein, die in einem Drosselkörper 19 vorgesehen sind und symmetrisch von einer zentralen Nut 20 ausgehen, welche den Steg 21 des Schieberprofils aufnimmt. In the plane of symmetry s-s in the housing 3 there is a plane of convergence k-k vertical, continuous channel 12 with a rectangular cross-section. In the channel 12, a slide l of double-l-shaped profile is displaceable, which tapered in a wedge shape in its longitudinal direction. The one, Longer T-necks 14 of the Sclieber profile engages two vertical guide grooves 15 which are attached to the Boundary planes 16 dc lying on both sides of the plane of symmetry s-s are provided as 12 are. The other, shorter T-Dalken 17 of the slide profile engages in two inclined Lumen 18, which are provided in a throttle body 19 and symmetrically from a central groove 20 go out, which receives the web 21 of the slide profile.
Der Drosselkörper 19 eist einen rechteckigen Querschnitt auf, der beidseits der Symmetricebene s-s durch die beiden Begrenzungsebenen 16 des Kanals 12 und beiden seitig der Konvergenzebene k-k durch zwei Ebenen 22 goführt wird, die in die entsprcchenden Begrenzungsebenen des Ausgangskanals 10 übergeherl. Der Drosselkörper i9, der durch seine Führungen 16, 22 in der Achse des Gehäuses 3 verschiebbar geführt ist, bildet eine zur Symmetrieebene s-s symmetrische Keilzunne 23, welche in der in der Zeichnung in vollen Linien gezeichneten Lage den Gehäusesteg 33. in der Konvergenz ebene k-k zu einem rhombischen Profil ergänzt (s.Fig. 1). Es ist ersichtlich, dass wenn der Schieber 13 im Kanal 12 in die strichpunktiert gezeichnete Lage 131 verschoben wird, der jeweils mit dem Drosselkörper 19 in Berührung stehende Teil dieses Schiebers 13 einen zunehmenden Abstand von den gehüuse festen Führungsnuten 15 hat, so dass der Drosselkörper 19 auf den Ausgangskanal 10 hin verschoben wird und seine Keilzunge 23 schliesslich in die Lage 23' kommt. In dieser Lage 231 bewir'r:i die Keilzunge 23 die stärkste rnit ihr erzielbare Verensung der Uebergänge der konvergierenden Kanäle 9 in den Ausgangskanal 10, also den grössten Drosselungseffekt. Der Drosselungseffekt ist stufenlos veränderbar und wird ohne störung der Symmetrie des Flusses der plastischen [lasse erzielt, was sich auf die Qualität der extrudierten Erzeugnisse sehr günstig auswirkt. Die Keilzunge 23 kann an ihrem freien Ende abgerundet sein. Um den Schieber 13 zu verschieben, ist derselbe über ein Zwischenstück 24 fest mit einer Gewindespindel 25 verbunden, die in eine Gewindebuchse 26 eingeschraubt ist. Die Gewindebuchse 26 ist in einer schematisch dargestellten lagerbuchse 27 gelagert und weist einen tAalteflansch 28 auf, der in einer entsprechenden Ringnut der Lagerbuchse 27 liegt. Die Lagerbuchse 27 ist mit dem Gehäuse 3 fest verbunden und an dem zur Lagerbuchse 27 vorstehenden Ende der Gewindebuchse 26 ist ein Handrad 29 befestigt. Es ist ersichtlich, dass mittels des Handrades 29 der Schieber 13 hin und her verschoben werden kann. The throttle body 19 eist a rectangular cross section, the on both sides of the plane of symmetry s-s through the two boundary planes 16 of the channel 12 and both sides of the plane of convergence k-k is guided by two planes 22, which pass into the corresponding delimitation levels of the output channel 10. Of the Throttle body i9, which can be displaced in the axis of the housing 3 through its guides 16, 22 is guided, forms a wedge trough 23 symmetrical to the plane of symmetry s-s, which in the position shown in full lines in the drawing, the housing web 33. in the convergence plane k-k is added to a rhombic profile (see Fig. 1). It is it can be seen that when the slide 13 in the channel 12 in the dash-dotted line Layer 131 is displaced, each of which is in contact with the throttle body 19 Part of this slide 13 an increasing distance from the housing fixed guide grooves 15, so that the throttle body 19 is displaced towards the outlet channel 10 and its wedge tongue 23 finally comes into position 23 '. In this situation 231 causes: i the wedge tongue 23 is the greatest reduction of the transitions of the converging ones that can be achieved with it Channels 9 in the output channel 10, so the greatest throttling effect. The throttling effect is infinitely variable and becomes plastic without disturbing the symmetry of the flow [let achieved, which affects the quality of the extruded products very much has a beneficial effect. The wedge tongue 23 can be rounded at its free end. Around To move the slide 13, the same is fixed with an intermediate piece 24 a threaded spindle 25 which is screwed into a threaded bushing 26. the Threaded bushing 26 is in a bearing bushing shown schematically 27 mounted and has a flange 28 in a corresponding annular groove the bearing bush 27 is located. The bearing bush 27 is firmly connected to the housing 3 and at the end of the threaded bushing 26 protruding towards the bearing bushing 27 is a handwheel 29 attached. It can be seen that the slide 13 can be moved back and forth.
Eine kleine Schulter 30 beim Uebergang des Zwischenstückes 24 zur Gewindespindel 25 dient als Anschlag zur fiegrenzung der Schieberbewegung nach aussen.A small shoulder 30 at the transition of the intermediate piece 24 to The threaded spindle 25 serves as a stop to limit the slide movement to the outside.
Zur Ueberwachung des Fabrikationsprozesses sind zwei piezo-elektrische Druckmesser 31 vorgesehen, deren wirksame Teile durch zwei symmetrisch geneigte Bohrungen 32 hindurch geführt sind und den Druck am Eingang der konvergenten Kanäle 9 messen. Ein dritter piezoelektrischer Druckmesser 33 misst den Druck in einem Teil des- Ausgangskanals 10, der in der Symmetrieebene s-s etwas erweitert ist. Daselbst wird auch die Temperatur mittels eines thermoelektrischen Temperaturmessers 34 gemessen, wobei Druck- und Temperaturmesser 33 und 34 in zwei einander gegenüberliegenden Bohrungen 35 und 36 stecken. To monitor the manufacturing process, two piezo-electric Pressure gauge 31 is provided, the effective parts of which by two symmetrically inclined Bores 32 are passed through and the pressure at the entrance of the convergent channels 9 measure. A third piezoelectric pressure gauge 33 measures the pressure in one Part of the output channel 10, which is somewhat expanded in the plane of symmetry s-s. The temperature is also measured there by means of a thermoelectric temperature meter 34 measured, with pressure and temperature meters 33 and 34 in two opposite Insert holes 35 and 36.
Wenn eine automatische Ueberwachung der Drosselvorrichtung 4 in Funktion der gemessenen Druck- und Temperaturwerte gewünscht wird, kann anstelle des Handrades 26 oder zusätzlich zu demselben ein Kettenrad vorgesehen werden, das von einen Servomotor angetrieben wird, der durch elektrische Steuerglieder gesteuert wird, denen diese Druck-und Temperaturwerte zugeführt werden. If an automatic monitoring of the throttle device 4 is in operation of the measured pressure and temperature values is required, can be used instead of the handwheel 26 or in addition to the same a sprocket can be provided, which is controlled by a servomotor is driven, which is controlled by electrical control elements, which these Pressure and temperature values are supplied.
Es ist selbstverständlich gleichgültig, o das Gehäuse 3 der Drosselvorrichtung 4 mit dem Gehäuse 1 der Schneckenpresse lösbar verbunden oder einen integrierenden Bestandteil des Schneckenpressengehäuses bildet. rerner wìrd noch bemerkt, dass anstelle der mechanischen Antriebsvorric#htung 24- 29 für den Schieber 13 auch eine hydraulische, pneumatische oder elektrische Antriebsvorrichtung vorgesehen werden kann. It is of course unimportant o the housing 3 of the throttle device 4 releasably connected to the housing 1 of the screw press or an integrating Forms part of the screw press housing. rerner is also noted that instead of the mechanical drive device 24-29 for the slide 13 there is also one hydraulic, pneumatic or electric drive device can be provided can.
Bei der in der Zeir:hnung dargestellten Ausführungsform der Drosselvorrichtung weisen der Drosselkörper 19 und die Kante 9 einen viereckigen Querschnitt auf. Selbstverständlich sind auch andere Querschnitte, z B. kreisförmige, denkbar. Die Gestalt der Keilzunge 23 wird dann jedoch mit Vorteil dem Querschnitt'der Kanäle 9 angepasst. In the embodiment of the throttle device shown in the drawing the throttle body 19 and the edge 9 have a square cross-section. Of course Other cross-sections, for example circular, are also conceivable. The shape of the wedge tongue 23 is then advantageously adapted to the cross section of the channels 9.
Claims (4)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH386671A CH536184A (en) | 1971-03-17 | 1971-03-17 | Adjustable throttle device on twin screw press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2121305A1 true DE2121305A1 (en) | 1972-09-28 |
Family
ID=4265158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19712121305 Pending DE2121305A1 (en) | 1971-03-17 | 1971-04-30 | Adjustable throttle - for a twin screw press arranged between the screws and the extruder tool |
Country Status (2)
| Country | Link |
|---|---|
| CH (1) | CH536184A (en) |
| DE (1) | DE2121305A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2751225A1 (en) * | 1977-11-16 | 1979-05-17 | Werner & Pfleiderer | ARRANGEMENT OF A MELT INDEX MEASURING DEVICE BEHIND THE SCREEN PACKAGE OF A PLASTIC EXTRUDER AND A PROCESS FOR REGULATING THE VISCOSITY OF MOLTEN PLASTIC AND TO BE MOLDED |
| FR2461573A1 (en) * | 1979-07-20 | 1981-02-06 | Diepal | Branched flow die head for tape extrusion - to eliminate rotary flight pulse effects by subsequent linear flow |
| DE3815897C1 (en) * | 1988-05-10 | 1989-07-13 | Werner & Pfleiderer Gmbh, 7000 Stuttgart, De | |
| US4976904A (en) * | 1989-04-20 | 1990-12-11 | Energy Research Corporation | Method and apparatus for continuous formation of fibrillated polymer binder electrode component |
| DE4400778A1 (en) * | 1994-01-13 | 1995-07-20 | Munsch Kunststoff Schweistechn | Extruder welding machine for welding thermoplastic materials |
| EA037495B1 (en) * | 2018-03-26 | 2021-04-02 | Коперион Гмбх | Starting-valve throttle device for delivering a melt from a screw extruder, system for preparing bulk material having a starting-valve throttle device, and method for delivering a melt from a screw extruder by means of a starting-valve throttle device |
-
1971
- 1971-03-17 CH CH386671A patent/CH536184A/en not_active IP Right Cessation
- 1971-04-30 DE DE19712121305 patent/DE2121305A1/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2751225A1 (en) * | 1977-11-16 | 1979-05-17 | Werner & Pfleiderer | ARRANGEMENT OF A MELT INDEX MEASURING DEVICE BEHIND THE SCREEN PACKAGE OF A PLASTIC EXTRUDER AND A PROCESS FOR REGULATING THE VISCOSITY OF MOLTEN PLASTIC AND TO BE MOLDED |
| US4213747A (en) | 1977-11-16 | 1980-07-22 | Werner & Pfleiderer | Method of and apparatus for controlling the viscosity of molten plastics material which is to be moulded |
| FR2461573A1 (en) * | 1979-07-20 | 1981-02-06 | Diepal | Branched flow die head for tape extrusion - to eliminate rotary flight pulse effects by subsequent linear flow |
| DE3815897C1 (en) * | 1988-05-10 | 1989-07-13 | Werner & Pfleiderer Gmbh, 7000 Stuttgart, De | |
| US4984977A (en) * | 1988-05-10 | 1991-01-15 | Werner & Pfleiderer, Gmbh | Screw-type extruder having a starting valve and throttle |
| US4976904A (en) * | 1989-04-20 | 1990-12-11 | Energy Research Corporation | Method and apparatus for continuous formation of fibrillated polymer binder electrode component |
| DE4400778A1 (en) * | 1994-01-13 | 1995-07-20 | Munsch Kunststoff Schweistechn | Extruder welding machine for welding thermoplastic materials |
| EA037495B1 (en) * | 2018-03-26 | 2021-04-02 | Коперион Гмбх | Starting-valve throttle device for delivering a melt from a screw extruder, system for preparing bulk material having a starting-valve throttle device, and method for delivering a melt from a screw extruder by means of a starting-valve throttle device |
Also Published As
| Publication number | Publication date |
|---|---|
| CH536184A (en) | 1973-04-30 |
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