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EP1656247A1 - Easy to install adjustable sizing device - Google Patents

Easy to install adjustable sizing device

Info

Publication number
EP1656247A1
EP1656247A1 EP04740727A EP04740727A EP1656247A1 EP 1656247 A1 EP1656247 A1 EP 1656247A1 EP 04740727 A EP04740727 A EP 04740727A EP 04740727 A EP04740727 A EP 04740727A EP 1656247 A1 EP1656247 A1 EP 1656247A1
Authority
EP
European Patent Office
Prior art keywords
calibration device
spindle
adjustable
mounting rings
segment
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.)
Withdrawn
Application number
EP04740727A
Other languages
German (de)
French (fr)
Inventor
Henning Stieglitz
Aron Altmann
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.)
KraussMaffei Technologies GmbH
Original Assignee
Krauss Maffei Kunststofftechnik 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 Krauss Maffei Kunststofftechnik GmbH filed Critical Krauss Maffei Kunststofftechnik GmbH
Publication of EP1656247A1 publication Critical patent/EP1656247A1/en
Withdrawn legal-status Critical Current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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/901—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies
    • B29C48/903—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies externally
    • 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/907—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article using adjustable calibrators, e.g. the dimensions of the calibrator being changeable

Definitions

  • the invention relates to an adjustable calibration device according to the preamble of claim 1.
  • Calibration devices are used, for example, to ensure the dimensioning of extruded endless profiles, for example pipes.
  • a plastic melt is first prepared in an extruder, which is machined by an outlet nozzle, also called a molding tool.
  • an outlet nozzle also called a molding tool.
  • the desired dimensioning of the endless profile it passes through the aforementioned calibration device after the shaping, in which it is deformed or held with dimensional accuracy.
  • This calibration device consists, for example, of a multiplicity of lamellae which are distributed over the circumference on the outside of the tube to be calibrated and are arranged at a distance from one another.
  • This calibration device When viewed in the direction of production of the tube, a large number of such lamellar rings are arranged within a calibration station, the individual lamellas of the individual lamellar rings being spaced from one another. This makes it easy to adjust the individual lamellae of the individual ring relative to the Slats of the following wreath or the previous wreath possible.
  • the slats can also be combined in segments into a slat block and carried by a holding or actuating structure.
  • the holding structure in turn is usually connected in a housing in a radially adjustable manner.
  • the assembly of the calibration device is, however, in some cases quite complex.
  • the calibration body usually consists of a large number of components to be assembled during assembly, the overall production of which is complex and cost-intensive.
  • the object of the present invention is to provide an adjustable calibration device of the type mentioned at the outset, which can be produced and assembled in a simple and inexpensive manner.
  • the adjustable calibration basket comprises at least one mounting ring which, arranged in the circumferential direction, has a number of radially running bores corresponding to the number of segment bodies, in which the actuating devices are received.
  • the mounting ring or rings are essentially designed to receive the segment bodies and that in addition to the mounting rings mentioned, a large number of further mounting elements is not required.
  • the calibration basket is no longer formed as usual by a large number of housing parts. Instead, a large number of such housing parts are replaced by the mounting ring.
  • the mounting ring is easy and inexpensive to manufacture.
  • the actuating devices of the segment bodies can be easily inserted in the mounting ring.
  • the actuating devices can be designed in the form of spindle drives, in which a nut moves a spindle radially outwards or inwards.
  • the spindle drive can in turn be designed to be easy to assemble with a spindle sleeve and a spindle rod accommodated therein.
  • the spindle sleeve can initially be inserted in the mounting ring or in a dedicated seat.
  • the spindle rod can be inserted into the spindle sleeve afterwards.
  • actuating devices can also be implemented in many other forms, for example by means of hydraulic or electrical drives.
  • two mounting rings are arranged coaxially and axially spaced apart.
  • Each segment body then comprises two holding and actuating devices, one of which is inserted into an associated opening of a mounting ring.
  • the mounting rings can in turn be fastened to a common construction, for example an inner support and retaining ring, which fixes the mounting rings in relation to one another.
  • a common construction for example an inner support and retaining ring, which fixes the mounting rings in relation to one another.
  • the bracket and thus the majority of the housing would be formed from the two mounting rings and the inner support and retaining ring.
  • a drive ring for adjusting the spindle drives is preferably arranged between the two mounting rings.
  • Fig. 3 shows a cross section perpendicular to the longitudinal axis of a calibration basket according to the prior art and Figure 4 shows longitudinal sections through a calibration basket according to the axes A and C as shown in Figure 3.
  • a conventional calibration basket is shown schematically in FIGS. 3 and 4 and is briefly explained below - only for later comparison purposes. For the rest, reference is made to DE 103 07 186 A, DE 103 15 125 A, DE 103 23 543 A and DE 103 24475 A for further information.
  • the calibration basket 110 comprises 24 lamella segments which are arranged in an approximately tubular housing in the circumferential direction thereof and are held in a radially adjustable manner.
  • a calibration device for different pipe diameters can be realized.
  • only one diameter is realized with all segment packages.
  • Each lamella segment has two actuating devices 112, which are spaced apart in the axial direction of the calibration device and are accommodated in the housing.
  • the actuating devices 112 comprise a spindle sleeve and a spindle rod accommodated therein, which is clamped to the spindle sleeve by means of screws.
  • a drive wheel 136 is arranged coaxially and rotatably between the two rows of actuating devices 112 (see FIG. 4).
  • the drive wheel 136 has a toothing on the side and meshes with spindle nuts provided on the actuating devices for radial adjustment of the lamella segments.
  • a disadvantage of this conventional construction is the large number of holding structures, namely in the present case a first holding ring 140, a second holding ring 142, a clamp-like inner holder 150 and and lateral holding ring 160. These elements together result with other elements result in the essentially tubular housing. This complex structure poses a certain challenge, particularly when assembling a calibration device. In addition, the production of the large number of different individual parts has proven to be particularly cost-intensive.
  • the core component here are the two mounting rings 11, which in the present case each have 12 bores which serve to accommodate the actuating devices 12.
  • lamella segments 24 (here six pieces) are arranged to form a calibration surface, namely in the circumferential direction, that is to say circularly, and at least partially overlapping. Due to the radial adjustment of the lamella segments 24, calibration openings with different diameters can be created.
  • the lamella segments are each held adjustably with two mounting and actuation devices 12, the actuation devices 12 in the present case comprising a spindle rod 18 and a spindle sleeve 16, as in the prior art.
  • the lamellar segments 24 are fastened radially on the inside on the spindle rod 18.
  • the spindle rods 18 are accommodated in the respectively assigned spindle sleeves 16 and are not only fixable but also adjustable via an adjusting and adjusting screw 32.
  • the spindle sleeve 18 has, at least in the lower part, an external thread which interacts with a spindle nut 22.
  • a spindle nut 22 By turning the spindle nut 22, the spindle sleeve and thus the spindle rod and also the lamellar segments 24 are moved radially inwards or outwards.
  • the spindle sleeve 16 is received and held in its own spindle seat 20, which in turn is inserted (eg screwed in) in the bores of the mounting ring.
  • the actuating device is covered by a housing 30.
  • An annular support and holder 26 is arranged radially within the spindle nuts 22.
  • spindle nuts 22 are rotatably supported and held for each mounting ring 11. Overall, the spindle nuts 22 are thus fixed between the tubular support 26 and the respective mounting ring 11.
  • the two of the mounting rings shown in section in Figure 1 are axially spaced and arranged coaxially to each other.
  • the two mounting rings 11 are connected to the support and retaining ring 26 via screw connections, not shown.
  • the support and retaining ring 26 thus also takes on the task of fixing the two mounting rings 11 to one another.
  • a vacuum suction device is connected to the calibration device 10 in FIG. 2, but is only shown partially and schematically.
  • a drive wheel 36 is arranged coaxially between the mounting rings and has teeth on its lateral edges. With these toothings, the drive wheel 36 meshes with the twelve spindle nuts arranged on the left in FIG. 2 and the 12 on the right in FIG. 2.
  • all actuating devices 12 can be operated simultaneously in the same way and all spindles can be adjusted identically radially inwards or outwards.
  • the calibration device essentially also has the two mounting rings, the drive wheel and the tubular support 26.
  • recesses are also provided in the mounting rings 11. In addition, material can be saved with these recesses and the manufacturing costs can be further reduced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)

Abstract

The invention relates to an adjustable sizing device for sizing extruded endless profiled pieces, particularly tubes, comprising a sizing opening that is formed by a multitude of peripherally arranged, radially adjustable segments (24) each having a segment body whose inner surface jointly forms the sizing opening. Each segment body has at least one actuating device (12), with which the individual segments (24) are held inside a housing, and an adjustment of one of each segment bodies can be effected in a radial direction. In order to ensure a simple and cost-effective installation of the sizing cage, the invention provides that at least one installation ring (11) is provided that, arranged in a peripheral direction, has a number of radially extending boreholes that corresponds to the number of segment bodies. The actuating devices (12) are precisely accommodated and oriented inside of said boreholes.

Description

Titel Montagefreundliche, verstellbare Kalibriereinrichtung Title Easy to install, adjustable calibration device

Beschreibungdescription

Die Erfindung betrifft eine verstellbare Kalibriereinrichtung gemäß dem Oberbegriff des Anspruchs 1.The invention relates to an adjustable calibration device according to the preamble of claim 1.

Kalibriereinrichtungen werden beispielsweise zur Sicherstellung der Dimensionierung von extrudierten Endlosprofilen, beispielsweise Rohren verwendet. Dabei wird in einem Extruder zunächst eine Kunststoffschmelze aufbereitet, welche durch eine Austrittsdüse, auch Formwerkzeug genannt, formgebend bearbeitet wird. Zur Sicherstellung der gewünschten Dimensionierung des Endlosprofils durchläuft dieses nach der Formgebung die vorgenannte Kalibriereinrichtung, in der es dimensionsgenau verformt oder gehalten wird.Calibration devices are used, for example, to ensure the dimensioning of extruded endless profiles, for example pipes. In this case, a plastic melt is first prepared in an extruder, which is machined by an outlet nozzle, also called a molding tool. To ensure the desired dimensioning of the endless profile, it passes through the aforementioned calibration device after the shaping, in which it is deformed or held with dimensional accuracy.

Bei der Herstellung von Kunststoffrohren war es bis vor einiger Zeit notwendig, für unterschiedliche Wanddicken oder Außendurchmesser, mehrere verschiedene Kalibriereinrichtungen zur Verfügung zu stellen. Bei einer Umstellung der Rohrproduktion mussten dann nicht nur die Werkzeuge, sondern auch die Kalibriereinrichtungen ausgewechselt werden, was ein Stillsetzen der Maschine erforderte und damit zu Ausfallzeiten führte.Until recently, when manufacturing plastic pipes, it was necessary to provide several different calibration devices for different wall thicknesses or outside diameters. When converting the pipe production, not only the tools but also the calibration equipment had to be replaced, which required the machine to be shut down and thus lead to downtimes.

In der DE 198 43 340 C2 ist daher vorgeschlagen, eine einstellbare Kalibriereinrichtung für unterschiedliche Rohrdimensionen zu verwenden. Diese Kalibriereinrichtung besteht beispielsweise aus einer Vielzahl von Lamellen, die an der Außenseite des zu kalibrierenden Rohres über den Umfang verteilt und im Abstand zueinander angeordnet sind. In Produktionsrichtung des Rohres gesehen, sind eine Vielzahl solcher Lamellenkränze innerhalb einer Kalibrierstation angeordnet, wobei die einzelnen Lamellen der einzelnen Lamellenkränze auf Lücke zueinander stehen. Dadurch ist eine problemlose Verstellung der einzelnen Lamellen des einzelnen Kranzes gegenüber den Lamellen des nachfolgenden Kranzes oder des vorhergehenden Kranzes möglich. Die Lamellen können auch segmentweise zu einem Lamellenblock zusammengefasst und von einer Halte- oder Betätigungskonstruktion getragen werden. Die Haltekonstruktion wiederum ist zumeist in einem Gehäuse in radial verstellbarer Weise verbunden.DE 198 43 340 C2 therefore proposes to use an adjustable calibration device for different pipe dimensions. This calibration device consists, for example, of a multiplicity of lamellae which are distributed over the circumference on the outside of the tube to be calibrated and are arranged at a distance from one another. When viewed in the direction of production of the tube, a large number of such lamellar rings are arranged within a calibration station, the individual lamellas of the individual lamellar rings being spaced from one another. This makes it easy to adjust the individual lamellae of the individual ring relative to the Slats of the following wreath or the previous wreath possible. The slats can also be combined in segments into a slat block and carried by a holding or actuating structure. The holding structure in turn is usually connected in a housing in a radially adjustable manner.

Bei herkömmlichen Konstruktionen - in diesem Zusammenhang wird auch auf die DE 103 07 186 A, die DE 103 15 125 A, die DE 103 23 543 A sowie die DE 103 24 475 A hingewiesen - ist die Montage der Kalibriereinrichtung jedoch zum Teil recht aufwendig. Der Kalibrierkörper besteht zumeist aus einer Vielzahl von bei der Montage zusammenzusetzenden Komponenten, deren Fertigung insgesamt aufwendig und kosten intensiv ist.In conventional constructions - in this context, reference is also made to DE 103 07 186 A, DE 103 15 125 A, DE 103 23 543 A and DE 103 24 475 A - the assembly of the calibration device is, however, in some cases quite complex. The calibration body usually consists of a large number of components to be assembled during assembly, the overall production of which is complex and cost-intensive.

Aufgabe der vorliegenden Erfindung ist es, eine verstellbare Kalibriereinrichtung der eingangs genannten Art zur Verfügung zu stellen, die in einfacher und kostengünstiger Weise herstellbar und montierbar ist.The object of the present invention is to provide an adjustable calibration device of the type mentioned at the outset, which can be produced and assembled in a simple and inexpensive manner.

Eine solche Lösung ist im Anspruch 1 angegeben.Such a solution is specified in claim 1.

Dabei umfasst der verstellbare Kalibrierkorb zumindest einen Montagering, der in Umfangsrichtung angeordnet eine der Anzahl der Segmentkörper entsprechende Anzahl von radial verlaufenden Bohrungen aufweist, in denen die Betätigungsvorrichtungen aufgenommen sind.The adjustable calibration basket comprises at least one mounting ring which, arranged in the circumferential direction, has a number of radially running bores corresponding to the number of segment bodies, in which the actuating devices are received.

Dabei ist ein Kerngedanke der Erfindung, dass der oder die Montageringe im wesentlichen allein zur Aufnahme der Segmentkörper ausgebildet sind und neben den angesprochenen Montageringen keine große Anzahl weiterer Montageelemente erforderlich ist. Damit wird der Kalibrierkorb nicht mehr wie üblich durch eine Vielzahl von Gehäuseteilen gebildet. Vielmehr werden eine Vielzahl von solchen Gehäuseteilen durch den Montagering ersetzt. Der Montagering lässt sich einfach und kostengünstig herstellen. Überdies lassen sich im Montagering die Betätigungsvorrichtungen der Segmentkörper leicht einsetzen.It is a core concept of the invention that the mounting ring or rings are essentially designed to receive the segment bodies and that in addition to the mounting rings mentioned, a large number of further mounting elements is not required. As a result, the calibration basket is no longer formed as usual by a large number of housing parts. Instead, a large number of such housing parts are replaced by the mounting ring. The mounting ring is easy and inexpensive to manufacture. In addition, the actuating devices of the segment bodies can be easily inserted in the mounting ring.

Die Betätigungsvorrichtungen können in Form von Spindeltrieben ausgebildet sein, bei der eine Mutter eine Spindel in radialer Weise nach außen oder innen bewegt. Der Spindeltrieb kann in wiederum montageerleichtemder Weise mit einer Spindelhülse und einer darin aufgenommenen Spindelstange ausgebildet sein. Die Spindelhülse kann zunächst in den Montagering oder einen eigenen dafür vorgesehenen Sitz eingesetzt werden. Die Spindelstange kann nachträglich in die Spindelhülse eingeschoben werden.The actuating devices can be designed in the form of spindle drives, in which a nut moves a spindle radially outwards or inwards. The The spindle drive can in turn be designed to be easy to assemble with a spindle sleeve and a spindle rod accommodated therein. The spindle sleeve can initially be inserted in the mounting ring or in a dedicated seat. The spindle rod can be inserted into the spindle sleeve afterwards.

Natürlich lassen sich die Betätigungsvorrichtungen auch in vielen anderen Formen realisieren, beispielsweise durch hydraulische oder elektrische Antriebe.Of course, the actuating devices can also be implemented in many other forms, for example by means of hydraulic or electrical drives.

Gemäß einer besonders bevorzugten Ausführungsform sind zwei Montageringe koaxial und axial beabstandet zueinander angeordnet. Jeder Segmentkörper umfasst dann zwei Halterungs- und Betätigungsvorrichtungen, von denen jeweils eine in eine zugeordnete Öffnung eines Montageringes eingefügt wird.According to a particularly preferred embodiment, two mounting rings are arranged coaxially and axially spaced apart. Each segment body then comprises two holding and actuating devices, one of which is inserted into an associated opening of a mounting ring.

Die Montageringe wiederum können gemäß einer besonders bevorzugten Ausführungsform an einer gemeinsamen Konstruktion befestigt sein, zum Beispiel einem inneren Stütz- und Haltering, der die Montageringe in Relation zueinander festsetzt. In diesem Fall würde die Halterung und damit auch der Großteil des Gehäuses aus den beiden Montageringen und dem inneren Stütz- und Haltering gebildet sein.According to a particularly preferred embodiment, the mounting rings can in turn be fastened to a common construction, for example an inner support and retaining ring, which fixes the mounting rings in relation to one another. In this case, the bracket and thus the majority of the housing would be formed from the two mounting rings and the inner support and retaining ring.

Vorzugsweise sind zwischen den beiden Montageringen ein Antriebsring zur Verstellung der Spindeltriebe angeordnet.A drive ring for adjusting the spindle drives is preferably arranged between the two mounting rings.

Die vorliegende Erfindung wird nachfolgend anhand eines Ausführungsbeispiels und mit Bezug auf die beiliegenden Zeichnungen näher erläutert. Die Zeichnung zeigt inThe present invention is explained in more detail below using an exemplary embodiment and with reference to the accompanying drawings. The drawing shows in

Fig. 1 einen Querschnitt senkrecht zur Längsachse durch einen erfindungsgemäßen Kalibrierkorb,1 shows a cross section perpendicular to the longitudinal axis through a calibration basket according to the invention,

Fig. 2 einen Längsschnitt durch den Kalibrierkorb gemäß Figur 1,2 shows a longitudinal section through the calibration basket according to FIG. 1,

Fig. 3 einen Querschnitt senkrecht zur Längsachse eines Kalibrierkorbes gemäß dem Stand der Technik und Figur 4 Längsschnitte durch einen Kalibrierkorb entsprechend der Achsen A und C wie in Figur 3 dargestellt.Fig. 3 shows a cross section perpendicular to the longitudinal axis of a calibration basket according to the prior art and Figure 4 shows longitudinal sections through a calibration basket according to the axes A and C as shown in Figure 3.

Ein herkömmlicher Kalibrierkorb ist in den Figuren 3 und 4 schematisch dargestellt und wird nachfolgend - nur für spätere Vergleichszwecke - kurz erläutert. Im übrigen wird für weitere Informationen auf die DE 103 07 186 A, die DE 103 15 125 A, die DE 103 23 543 A sowie die DE 103 24475 A hingewiesen.A conventional calibration basket is shown schematically in FIGS. 3 and 4 and is briefly explained below - only for later comparison purposes. For the rest, reference is made to DE 103 07 186 A, DE 103 15 125 A, DE 103 23 543 A and DE 103 24475 A for further information.

Der Kalibrierkorb 110 gemäß Fig. 3 umfasst 24 Lamellensegmente, die in einem in etwa rohrförmig ausgebildetem Gehäuse in dessen Umfangsrichtung angeordnet und in radial verstellbarer Weise gehalten sind. Durch radiales Verstellen der Segmentpakete - radial nach innen oder radial nach außen - kann eine Kalibriereinrichtung für unterschiedliche Rohrdurchmesser verwirklicht werden. In diesem Zusammenhang wird auf die beiden unterschiedlich eingestellten Rohrdurchmesser in der linken beziehungsweise der rechten Hälfte der Figur 3 hingewiesen, die diese Verstellmöglichkeit verdeutlichen sollen. Natürlich ist beim tatsächlichen Betrieb der Kalibriereinrichtung jeweils nur ein Durchmesser mit allen Segmentpaketen realisiert.The calibration basket 110 according to FIG. 3 comprises 24 lamella segments which are arranged in an approximately tubular housing in the circumferential direction thereof and are held in a radially adjustable manner. By radially adjusting the segment packages - radially inwards or radially outwards - a calibration device for different pipe diameters can be realized. In this connection, reference is made to the two differently set pipe diameters in the left and right half of FIG. 3, which are intended to illustrate this adjustment possibility. Of course, during the actual operation of the calibration device, only one diameter is realized with all segment packages.

Jedes Lamellensegment weist zwei in Axialrichtung der Kalibriereinrichtung beabstandete Betätigungsvorrichtungen 112 auf, die in dem Gehäuse aufgenommen sind. Die Betätigungsvorrichtungen 112 umfassen dabei eine Spindelhülse sowie eine darin aufgenommene Spindelstange, die mit der Spindelhülse mittels Schrauben verspannt ist. Zwischen den beiden Reihen von Betätigungsvorrichtungen 112 (siehe Figur 4) ist ein Antriebsrad 136 koaxial und drehbar angeordnet. Das Antriebsrad 136 weist seitlich eine Zahnung auf und kämmt jeweils mit an den Betätigungsvorrichtungen vorhandenen Spindelmuttern zur radialen Verstellung der Lamellensegmente. Diese gesamten Merkmale sind jedoch aus dem Stand der Technik bekannt.Each lamella segment has two actuating devices 112, which are spaced apart in the axial direction of the calibration device and are accommodated in the housing. The actuating devices 112 comprise a spindle sleeve and a spindle rod accommodated therein, which is clamped to the spindle sleeve by means of screws. A drive wheel 136 is arranged coaxially and rotatably between the two rows of actuating devices 112 (see FIG. 4). The drive wheel 136 has a toothing on the side and meshes with spindle nuts provided on the actuating devices for radial adjustment of the lamella segments. However, all of these features are known from the prior art.

Nachteilig bei dieser herkömmlichen Konstruktion, wie sie in den Figuren 3 und 4 dargestellt ist, sind jedoch die Vielzahl von Haltekonstruktionen, nämlich vorliegend ein erster Haltering 140, ein zweiter Haltering 142, eine schellenartige Innenhalterung 150 und und seitlicher Haltering 160. Diese Elemente ergeben zusammen mit anderen Elementen das im Wesentlichen rohrförmige Gehäuse ergeben. Gerade beim Zusammenbau einer Kalibriereinrichtung stellt dieser komplexe Aufbau eine gewisse Herausforderung dar. Überdies hat sich die Herstellung der Vielzähl von verschiedenen Einzelteile als besonders kostenintensiv erwiesen.A disadvantage of this conventional construction, as shown in FIGS. 3 and 4, however, are the large number of holding structures, namely in the present case a first holding ring 140, a second holding ring 142, a clamp-like inner holder 150 and and lateral holding ring 160. These elements together result with other elements result in the essentially tubular housing. This complex structure poses a certain challenge, particularly when assembling a calibration device. In addition, the production of the large number of different individual parts has proven to be particularly cost-intensive.

Eine erfindungsgemäße, verstellbare Kalibriereinrichtung wird nachfolgend mit Bezug auf die Figuren 1 und 2 erläutert.An adjustable calibration device according to the invention is explained below with reference to FIGS. 1 and 2.

Kernbestandteil sind dabei die beiden Montageringe 11 , welche vorliegend je 12 Bohrungen aufweisen, die zur Aufnahme der Betätigungsvorrichtungen 12 dienen.The core component here are the two mounting rings 11, which in the present case each have 12 bores which serve to accommodate the actuating devices 12.

Wie auch bei herkömmlichen Kalibriereinrichtung sind zur Bildung einer Kalibrieroberfläche Lamellensegmente 24 (hier sechs Stück) angeordnet, und zwar in Umfangsrichtung, also kreisförmig, sowie sich zumindest teilweise überlappend. Durch die radiale Verstellung der Lamellensegmente 24 können Kalibrieröffnungen mit unterschiedlichem Durchmesser geschaffen werden. Die Lamellensegmente sind jeweils mit zwei Halterungs- und Betätigungsvorrichtungen 12 verstellbar gehalten, wobei die Betätigungsvorrichtungen 12 vorliegend - wie auch im Stand der Technik - eine Spindelstange 18 und eine Spindelhülse 16 umfassen. An der Spindelstange 18 sind radial innenseitig die Lamellensegmente 24 befestigt. Die Spindelstangen 18 sind in den jeweils zugeordneten Spindelhülsen 16 aufgenommen und über eine Justier- und Versteilschraube 32 nicht nur festlegbar sondern auch justierbar.As in the case of conventional calibration devices, lamella segments 24 (here six pieces) are arranged to form a calibration surface, namely in the circumferential direction, that is to say circularly, and at least partially overlapping. Due to the radial adjustment of the lamella segments 24, calibration openings with different diameters can be created. The lamella segments are each held adjustably with two mounting and actuation devices 12, the actuation devices 12 in the present case comprising a spindle rod 18 and a spindle sleeve 16, as in the prior art. The lamellar segments 24 are fastened radially on the inside on the spindle rod 18. The spindle rods 18 are accommodated in the respectively assigned spindle sleeves 16 and are not only fixable but also adjustable via an adjusting and adjusting screw 32.

Die Spindelhülse 18 weist zumindest im unteren Teil ein Außengewinde auf, welches mit einer Spindelmutter 22 zusammenwirkt. Durch Drehen der Spindelmutter 22 wird die Spindelhülse und damit die Spindelstange und ebenfalls das Lamellensegmente 24 radial nach innen oder außen bewegt. Die Spindelhülse 16 ist in einem eigenen Spindelsitz 20 aufgenommen und gehalten, der wiederum in den Bohrungen des Montagerings eingefügt (z.B. eingeschraubt) ist. Außen ist die Betätigungsvorrichtung über ein Gehäuse 30 abgedeckt. Radial innerhalb der Spindelmuttern 22 ist eine ringförmige Abstützung und Halterung 26 angeordnet. In diesem Stütz- und Haltering 26 sind jeweils pro Montagering 11 12 Spindelmuttern 22 drehbar gelagert und gehalten. Insgesamt sind die Spindelmuttern 22 damit zwischen der rohrförmigen Abstützung 26 und dem jeweiligen Montagering 11 fixiert. Wie aus Figur 2 zu erkennen ist, sind die zwei der in Figur 1 im Schnitt dargestellten Montageringe axial beabstandet und koaxial zueinander angeordnet. Dabei sind beide Montageringe 11 über nicht näher dargestellte Verschraubungen mit dem Stütz- und Haltering 26 verbunden. Der Stütz- und Haltering 26übernimmt damit auch die Aufgabe der Fixierung der beiden Montageringe 11 zueinander.The spindle sleeve 18 has, at least in the lower part, an external thread which interacts with a spindle nut 22. By turning the spindle nut 22, the spindle sleeve and thus the spindle rod and also the lamellar segments 24 are moved radially inwards or outwards. The spindle sleeve 16 is received and held in its own spindle seat 20, which in turn is inserted (eg screwed in) in the bores of the mounting ring. On the outside, the actuating device is covered by a housing 30. An annular support and holder 26 is arranged radially within the spindle nuts 22. In this support and retaining ring 26, 12 spindle nuts 22 are rotatably supported and held for each mounting ring 11. Overall, the spindle nuts 22 are thus fixed between the tubular support 26 and the respective mounting ring 11. As can be seen from Figure 2, the two of the mounting rings shown in section in Figure 1 are axially spaced and arranged coaxially to each other. The two mounting rings 11 are connected to the support and retaining ring 26 via screw connections, not shown. The support and retaining ring 26 thus also takes on the task of fixing the two mounting rings 11 to one another.

An die Kalibriereinrichtung 10 schließt sich in Fig. 2 eine Vakuum-Saugeinrichtung an, welche jedoch nur teilweise und schematisch dargestellt ist.A vacuum suction device is connected to the calibration device 10 in FIG. 2, but is only shown partially and schematically.

Zwischen den Montageringen ist ein Antriebsrad 36 koaxial angeordnet, welches an seinen seitlichen Rändern Verzahnungen aufweist. Mit diesen Verzahnungen kämmt das Antriebsrad 36 mit den zwölf in Fig. 2 links und den 12 in Fig. 2 rechts angeordneten Spindelmuttern. Durch eine Drehung des Antriebsrads 36 in Umfangsrichtung der Kalibriereinrichtung können so gleichzeitig alle Betätigungsvorrichtungen 12 in gleicher Weise betrieben und alle Spindeln identisch nach radial nach innen oder außen verstellt werden. Die Kalibriereinrichtung weist neben den Lamellensegmenten mit dazugehörigen Betätigungseinrichtungen im wesentlichen zusätzlich noch die beiden Montageringe, das Antriebsrad und die rohrförmige Abstützung 26 auf.A drive wheel 36 is arranged coaxially between the mounting rings and has teeth on its lateral edges. With these toothings, the drive wheel 36 meshes with the twelve spindle nuts arranged on the left in FIG. 2 and the 12 on the right in FIG. 2. By rotating the drive wheel 36 in the circumferential direction of the calibration device, all actuating devices 12 can be operated simultaneously in the same way and all spindles can be adjusted identically radially inwards or outwards. In addition to the lamella segments with associated actuation devices, the calibration device essentially also has the two mounting rings, the drive wheel and the tubular support 26.

Zur Gewichtsverringerung sind überdies noch Ausnehmungen in den Montageringen 11 vorgesehen. Überdies lassen sich mit diesen Ausnehmungen Material einsparen und die Herstellkosten nochmals reduzieren.To reduce weight, recesses are also provided in the mounting rings 11. In addition, material can be saved with these recesses and the manufacturing costs can be further reduced.

Nunmehr können die einzelnen Betätigungsvorrichtungen 12 ohne weiteres in die vorher eingefügten Spindelsitze 20 eingeschoben und verspannt werden. Insgesamt müssen keine größere Vielzahl von separaten Gehäuseteilen zueinander montiert und fixiert werden. Die Herstellkosten lassen sich damit verringern und die Montageeinfachheit erhöhen. BezugszeichenlisteNow the individual actuators 12 can be easily inserted and clamped into the spindle seats 20 previously inserted. Overall, there is no need to assemble and fix a large number of separate housing parts to one another. The manufacturing costs can thus be reduced and the simplicity of assembly increased. LIST OF REFERENCE NUMBERS

Ausnehmungrecess

Verstellbarer KalibrierkorbAdjustable calibration basket

Montageringmounting ring

Betätig u ngsvorrichtu ngActuating device

Spindeleinrichtungspindle device

Spindelhülse mit AußengewindeSpindle sleeve with external thread

Spindelstange SpindelsitzSpindle rod spindle seat

Spindelmutterspindle nut

Lamellensegmentlamellar segment

Stütz- und HalteringSupport and retaining ring

Abdeckungcover

Verstell- und JustierschraubeAdjustment and adjustment screw

Antriebsrad Vakuum-SaugglockeDriving wheel vacuum suction cup

Kalibrierkorb nach dem Stand der TechnikCalibration basket according to the state of the art

Spindeltriebspindle drive

Antriebsraddrive wheel

Halteringretaining ring

Halteringretaining ring

Rohrförmige InnenhalterungTubular inner bracket

Seitlicher Haltering Lateral retaining ring

Claims

Patentansprüche claims 1. Verstellbare Kalibriereinrichtung zur Kalibrierung von extrudierten Endlosprofilen, insbesondere Rohren, mit einer Kalibrieröffnung, die durch eine Vielzahl von umfangsmäßig angeordneten, radial verstellbaren Segmenten (24) die jeweils einen Segmentkörper aufweisen, gebildet ist, wobei die Innenoberflächen der Segmente gemeinsam die Kalibrieröffnung bilden und wobei jeder Segmentkörper zumindest eine Betätigungsvorrichtung (12) aufweist, mit der die einzelnen Segmente (24) gehalten sind und eine Verstellung eines jeden einzelnen Segmentkörpers in Radialrichtung vornehmbar ist, dadurch gekennzeichnet, dass zumindest ein Montagering (11) vorgesehen ist, der in Umfangsrichtung angeordnet eine der Anzahl der Segmentkörper entsprechende Anzahl von radial verlaufenden Bohrungen aufweist, in denen die Betätigungsvorrichtungen (12) aufgenommen, gehalten und ausgerichtet sind.1. Adjustable calibration device for the calibration of extruded endless profiles, in particular tubes, with a calibration opening, which is formed by a plurality of circumferentially arranged, radially adjustable segments (24) each having a segment body, the inner surfaces of the segments jointly forming the calibration opening and wherein each segment body has at least one actuating device (12) with which the individual segments (24) are held and an adjustment of each individual segment body in the radial direction can be carried out, characterized in that at least one mounting ring (11) is provided which is arranged in the circumferential direction has a number of radially running bores corresponding to the number of segment bodies, in which the actuating devices (12) are received, held and aligned. 2. Verstellbare Kalibriereinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass in jeder Bohrung ein eigenes Sitzelement (20) für die Betätigungsvorrichtungen (12) angeordnet ist, mit der die Betätigungsvorrichtungen (12) präzise ausrichtbar sind.2. Adjustable calibration device according to claim 1, characterized in that a separate seat element (20) for the actuating devices (12) is arranged in each bore, with which the actuating devices (12) can be precisely aligned. 3. Verstellbare Kalibriereinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass jede Betätigungsvorrichtung (12) einen Spindeltrieb (14) umfasst.3. Adjustable calibration device according to claim 1 or 2, characterized in that each actuating device (12) comprises a spindle drive (14). 4. Verstellbare Kalibriereinrichtung nach Anspruch 3, dadurch gekennzeichnet, dass jeder Spindeltrieb (14) eine Spindelhülse (16) sowie eine darin aufgenommene Spindelstange (18) umfasst und an der Spindelstange (18) der Segmentkörper angeordnet ist. 4. Adjustable calibration device according to claim 3, characterized in that each spindle drive (14) comprises a spindle sleeve (16) and a spindle rod (18) accommodated therein and the segment body is arranged on the spindle rod (18). 5. Verstellbare Kalibriereinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass zwei Montageringe (11) koaxial zueinander und axial beabstandet angeordnet sind und jeder Segmentkörper in jedem der beiden Montageringe (11) gehalten ist.5. Adjustable calibration device according to one of the preceding claims, characterized in that two mounting rings (11) are arranged coaxially to one another and axially spaced and each segment body is held in each of the two mounting rings (11). 6. Verstellbare Kalibriereinrichtung nach Anspruch 5, dadurch gekennzeichnet, dass zwischen den beiden Montageringen (11) und zu diesen koaxial ein Antriebsring (36) zum Verstellen der Segmentblöcke drehbar gehalten ist.6. Adjustable calibration device according to claim 5, characterized in that between the two mounting rings (11) and coaxially with them a drive ring (36) for adjusting the segment blocks is rotatably held. 7. Verstellbare Kalibriereinrichtung nach einem der Ansprüche 5 oder 6, dadurch gekennzeichnet, dass koaxial zu den beiden Montageringen (11) ein innerer Stütz- und Haltering (26) angeordnet ist, mit dem beide Montageringe (11) verbunden sind.7. Adjustable calibration device according to one of claims 5 or 6, characterized in that an inner support and retaining ring (26) is arranged coaxially to the two mounting rings (11), with which both mounting rings (11) are connected. 8. Verstellbare Kalibriereinrichtung nach Anspruch 7, dadurch gekennzeichnet, dass zwischen dem inneren Abstützring (26) und den Montageringen (11) jeweils für jede Betätigungsvorrichtung (12) Spindelmutter (22) drehbar angeordnet sind, die mit dem Antriebsring (36) in kämmender Verzahnung stehen.8. Adjustable calibration device according to claim 7, characterized in that between the inner support ring (26) and the mounting rings (11) for each actuating device (12) spindle nut (22) are rotatably arranged with the drive ring (36) in meshing teeth stand. 9. Verstellbare Kalibriereinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Montageringe (11) Bohrungen oder Ausnehmungen zur Gewichtseinsparung aufweisen. 9. Adjustable calibration device according to one of the preceding claims, characterized in that the mounting rings (11) have bores or recesses for saving weight.
EP04740727A 2003-08-14 2004-07-07 Easy to install adjustable sizing device Withdrawn EP1656247A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10337533A DE10337533B4 (en) 2003-08-14 2003-08-14 Easy to install, adjustable calibration device
PCT/EP2004/007411 WO2005016629A1 (en) 2003-08-14 2004-07-07 Easy to install adjustable sizing device

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US (1) US20060185183A1 (en)
EP (1) EP1656247A1 (en)
CN (1) CN100526047C (en)
DE (1) DE10337533B4 (en)
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WO (1) WO2005016629A1 (en)

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RU2322349C2 (en) 2008-04-20
US20060185183A1 (en) 2006-08-24
WO2005016629A1 (en) 2005-02-24
DE10337533A1 (en) 2005-03-10
CN1832844A (en) 2006-09-13
RU2006107924A (en) 2006-07-27
DE10337533B4 (en) 2006-04-06
CN100526047C (en) 2009-08-12

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