DE1274797B - Screw press for extruding thermoplastics in particular - Google Patents

Screw press for extruding thermoplastics in particular

Info

Publication number
DE1274797B
DE1274797B DEZ11514A DEZ0011514A DE1274797B DE 1274797 B DE1274797 B DE 1274797B DE Z11514 A DEZ11514 A DE Z11514A DE Z0011514 A DEZ0011514 A DE Z0011514A DE 1274797 B DE1274797 B DE 1274797B
Authority
DE
Germany
Prior art keywords
screws
screw press
annular space
screw
behind
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
Application number
DEZ11514A
Other languages
German (de)
Inventor
Jean Daubenfeld
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.)
Zimmermann and Jansen GmbH
Original Assignee
Zimmermann and Jansen 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 Zimmermann and Jansen GmbH filed Critical Zimmermann and Jansen GmbH
Priority to DEZ11514A priority Critical patent/DE1274797B/en
Publication of DE1274797B publication Critical patent/DE1274797B/en
Pending legal-status Critical Current

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
    • B29C48/36—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
    • B29C48/445—Coaxially arranged screws, i.e. one within the other
    • 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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/345—Extrusion nozzles comprising two or more adjacently arranged ports, for simultaneously extruding multiple strands, e.g. for pelletising
    • 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
    • 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
    • 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
    • B29C48/05—Filamentary, e.g. strands
    • 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
    • B29C48/06—Rod-shaped

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Description

Schneckenpresse zum Extrudieren von insbesondere thermoplastischen Kunststoffen Die Erfindung bezieht sich auf eine Schneckenpresse zum Extrudieren von insbesondere thermoplastischen Kunststoffen mit zwei auf einer gemeinsamen Achse hintereinander angeordneten Schnecken mit verschiedenen Durchmessern und Steigungen der Gewindegänge. Es ist bekannt, zwischen den beiden hintereinander angeordneten Schnecken einen Ringraum vorzusehen. Innerhalb dieses ringförmigen Zwischenraumes weist die Vorderschnecke sich fortsetzende Gewindegänge auf. Hierdurch entsteht strömungstechnisch ein kaskadenartiger Durchfluß, was einen ungleichmäßigen und diskontinuierlichen Massenfluß bedeutet.Screw press for extruding thermoplastics, in particular Plastics The invention relates to a screw press for extrusion of thermoplastics in particular with two on a common axis consecutively arranged screws with different diameters and pitches the threads. It is known to be arranged between the two one behind the other Provide an annulus to screws. Within this annular space the front worm has continuous threads. This creates fluidically a cascade-like flow, which is an uneven and means discontinuous mass flow.

Der Erfindung liegt die Aufgabe zugrunde, die rohrartige Strömung zwischen den Schnecken mit verschiedenen Durchmessern und Steigungen der Gewindegänge gleichmäßig und kontinuierlich zu gestalten. Dieses technische Problem wird auf einfachste Weise dadurch gelöst, daß der freie Ringraum zwischen den beiden hintereinander angeordneten Schnecken als eine den Druck der durchfließenden Kunststoffmasse ausgleichende Durchsatzschleuse ausgebildet ist. The invention is based on the object of the tubular flow between the screws with different diameters and pitches of the threads evenly and continuously. This technical problem appears on easiest way solved in that the free annular space between the two one behind the other arranged screws as a pressure equalizing the plastic mass flowing through Throughput lock is formed.

Der Erfindungsgegenstand ist auf der Zeichnung durch ein Ausführungsbeispiel schematisch dargestellt, und zwar zeigt A b b. 1 die Draufsicht einer Schneckenpresse gemäß der Erfindung im Schnitt, A b b. 2 einen Querschnitt nach Linie II-II der Abb. 1, A b b. 3 einen Querschnitt nach Linie III-III der Abb. 1. The subject of the invention is shown in the drawing by means of an exemplary embodiment shown schematically, namely shows A b b. 1 the top view of a screw press according to the invention in section, A b b. 2 shows a cross section along line II-II of FIG Fig. 1, A b b. 3 shows a cross section along line III-III in FIG. 1.

Gemäß dem auf der Zeichnung dargestellten Ausführungsbeispiel besteht die Schneckenpresse aus einem vorderen Teil 1 und einem hinteren Teil 2. According to the embodiment shown in the drawing, there is the screw press consists of a front part 1 and a rear part 2.

Der Schaft 3 der Vorderschnecke 4 findet in der Hinterschnecke 5 ein Drehlager. Bei dem dargestellten Ausführungsbeispiel haben die vordere Schnecke 4 und die hintere Schnecke 5 verschiedene Durchmesser und verschiedene Steigungen in den Gewindegängen. Zwischen der hinteren Schnecke 5 und der vorderen Schnecke 4 ist ein ringförmiger Zwischenraum 6 vorgesehen.The shaft 3 of the front worm 4 is found in the rear worm 5 Pivot bearing. In the illustrated embodiment, the front screw 4 and the rear auger 5 different diameters and different pitches in the threads. Between the rear screw 5 and the front screw 4, an annular space 6 is provided.

Es liegt im Sinne der Erfindung, den Ringraum 6 gewindelos auszugestalten, daß die zwischen der hinteren Schnecke 5 und der vorderen Schnecke 4 fließenden Massen gegenüber den Massen innerhalb der verschiedenen Schnecken 4 und 5 zum Druckausgleich gelangen. Der freie Ringraum 6 schleust die durchfließenden Massen von der größeren Hinterschnecke 5 zur kleineren vorderen Schnecke 4 so durch, daß in dieser Schleuse eine gleichmäßige und kontinuierliche rohrartige Strömung gewährleistet bleibt. Hierdurch wird die Voraussetzung gegeben, daß die durch die Schleuse 6 hindurchgeschleusten Massen ihre Eigenschaften ohne Änderung beibehalten trotz ihrer verschiedenen Bewegungen innerhalb der verschiedenen hinteren und vorderen Schnecken 4 und 5. It is within the meaning of the invention to design the annular space 6 threadless, that the flowing between the rear screw 5 and the front screw 4 Masses compared to the masses within the various screws 4 and 5 for pressure equalization reach. The free annular space 6 sluices the masses flowing through from the larger one Back screw 5 to the smaller front screw 4 so that in this lock an even and continuous tube-like flow is guaranteed. This provides the prerequisite that the lock 6 is passed through Masses retain their properties without change in spite of their various movements within the various rear and front augers 4 and 5.

Es liegt weiterhin im Sinne der Erfindung, daß bei nebeneinander angeordneten Paaren von hintereinander angeordneten Schnecken 4, 5 und 4n und 5n durch ihre ausgleichenden Schleusen 6 und 6n miteinander in offener Verbindung 8 stehen. Hierdurch wird erreicht, daß man eine beliebige Anzahl von Strängen 9 mit beliebig profilierten Querschnitten pressen kann, die in jedem Falle die gleichen Eigenschaften haben, weil, bedingt durch die Ausgleichszone 6, 6n und 8 in allen Schnecken 4 und 4n kleineren Durchmessers die gleichen Druckverhältnisse entstehen müssen. Das hat zwangläufig zur Folge, daß die durch die Verformungsmundstücke 10 und 10 m gepreßten Massen in den Schneckenpressen die gleiche Behandlung in der gleichen Weise erfahren. Auf diese Weise erhalten die verschiedenen Stränge 9 und 9n mit den verschiedensten profilierten Querschnitten die gleiche Zusammensetzung und insbesondere die gleichen Eigenschaften. It is also within the meaning of the invention that next to each other arranged pairs of screws 4, 5 and 4n and 5n arranged one behind the other through their compensating locks 6 and 6n in an open connection 8 with one another stand. This ensures that any number of strands 9 with can press any profiled cross-sections, which are always the same Have properties because, due to the compensation zone 6, 6n and 8 in all Screws 4 and 4n of smaller diameter create the same pressure conditions have to. This inevitably means that the deformation mouthpieces 10 and 10 m pressed masses in the screw presses the same treatment in the experience the same way. In this way, the various strands 9 and 9n with the most varied of profiled cross-sections have the same composition and especially the same properties.

Claims (2)

Patentansprüche: 1. Schneckenpresse zum Extrudieren von insbesondere thermoplastischen Kunststoffen mit zwei auf einer gemeinsamen Achse hintereinander angeordneten Schnecken mit verschiedenen Durchmessern und Steigungen der Gewindegänge und mit einem Ringraum zwischen den beiden Schnecken, dadurch gekennzeichnet, daß der freie Ringraum (6) als eine den Druck der durchfließendenKunststoffmasse ausgleichende Durchsatzschleuse ausgestaltet ist. Claims: 1. Screw press for extruding in particular thermoplastics with two on a common axis one behind the other arranged screws with different diameters and pitches of the threads and with an annular space between the two screws, characterized in that the free annular space (6) as one of the pressure the plastic mass flowing through compensating throughput lock is designed. 2. Schneckenpresse nach Anspruch 1, dadurch gekennzeichnet, daß nebeneinander angeordnete Paare von hintereinander angeordneten Schnekken (4, 5) und (4n, ã n) durch ihre ausgleichenden Durchsatzschleusen (6, 6 n) miteinander in offener Verbindung (8) stehen. 2. Screw press according to claim 1, characterized in that side by side arranged pairs of screws (4, 5) and (4n, ã n) arranged one behind the other through their balancing Throughput locks (6, 6 n) in open connection with one another (8) stand. In Betracht gezogene Druckschriften: Deutsche Patentschrift Nr. 962746; deutsche Auslegeschrift Nr. 1 047417. Documents considered: German Patent No. 962746; German interpretative document No. 1 047417.
DEZ11514A 1961-12-27 1965-04-30 Screw press for extruding thermoplastics in particular Pending DE1274797B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEZ11514A DE1274797B (en) 1961-12-27 1965-04-30 Screw press for extruding thermoplastics in particular

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU41007 1961-12-27
DEZ11514A DE1274797B (en) 1961-12-27 1965-04-30 Screw press for extruding thermoplastics in particular

Publications (1)

Publication Number Publication Date
DE1274797B true DE1274797B (en) 1968-08-08

Family

ID=26003592

Family Applications (1)

Application Number Title Priority Date Filing Date
DEZ11514A Pending DE1274797B (en) 1961-12-27 1965-04-30 Screw press for extruding thermoplastics in particular

Country Status (1)

Country Link
DE (1) DE1274797B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2566700A1 (en) * 1984-06-27 1986-01-03 Clextral Method for processing material by extrusion and multi-screw machine for the implementation of this method
EP0319779A2 (en) * 1987-12-07 1989-06-14 Max Gutknecht Screw mill for crushing and pressing ground material
US4875847A (en) * 1984-04-23 1989-10-24 Wenger Manufacturing, Inc. Twin-screw extruder having respective conical nose screw sections
US5014882A (en) * 1989-05-19 1991-05-14 Marlen Research Corporation Pivot-action portioning apparatus and method
EP0513742A1 (en) * 1991-05-13 1992-11-19 Johannes Dr.-Ing. Weber Multiple screw extruder

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE962746C (en) * 1953-08-01 1957-04-25 Dynamit Nobel Ag Device for the production of foils, webs, pipes or profiles from thermoplastics
DE1047417B (en) * 1954-07-12 1958-12-24 Hermann Teichmann Dr Ing Milling and kneading device on screw presses for thermoplastic masses

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE962746C (en) * 1953-08-01 1957-04-25 Dynamit Nobel Ag Device for the production of foils, webs, pipes or profiles from thermoplastics
DE1047417B (en) * 1954-07-12 1958-12-24 Hermann Teichmann Dr Ing Milling and kneading device on screw presses for thermoplastic masses

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4875847A (en) * 1984-04-23 1989-10-24 Wenger Manufacturing, Inc. Twin-screw extruder having respective conical nose screw sections
FR2566700A1 (en) * 1984-06-27 1986-01-03 Clextral Method for processing material by extrusion and multi-screw machine for the implementation of this method
EP0319779A2 (en) * 1987-12-07 1989-06-14 Max Gutknecht Screw mill for crushing and pressing ground material
EP0319779A3 (en) * 1987-12-07 1990-08-08 Max Gutknecht Screw mill for crushing and pressing ground material
US5014882A (en) * 1989-05-19 1991-05-14 Marlen Research Corporation Pivot-action portioning apparatus and method
EP0513742A1 (en) * 1991-05-13 1992-11-19 Johannes Dr.-Ing. Weber Multiple screw extruder

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