DE4101854C1 - Repair device for CFK monolith with double-T stringer - includes three part aluminium@ heater with electrically heated rod(s) in core section - Google Patents

Repair device for CFK monolith with double-T stringer - includes three part aluminium@ heater with electrically heated rod(s) in core section

Info

Publication number
DE4101854C1
DE4101854C1 DE19914101854 DE4101854A DE4101854C1 DE 4101854 C1 DE4101854 C1 DE 4101854C1 DE 19914101854 DE19914101854 DE 19914101854 DE 4101854 A DE4101854 A DE 4101854A DE 4101854 C1 DE4101854 C1 DE 4101854C1
Authority
DE
Germany
Prior art keywords
double
stringer
heater
monolith
repair device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE19914101854
Other languages
German (de)
Inventor
Dennis 2168 Drochtersen De Cousins
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.)
Airbus Operations GmbH
Original Assignee
Airbus Operations 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 Airbus Operations GmbH filed Critical Airbus Operations GmbH
Priority to DE19914101854 priority Critical patent/DE4101854C1/en
Application granted granted Critical
Publication of DE4101854C1 publication Critical patent/DE4101854C1/en
Priority to DE202004020856U priority patent/DE202004020856U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
    • B29C73/24—Apparatus or accessories not otherwise provided for
    • B29C73/30—Apparatus or accessories not otherwise provided for for local pressing or local 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
    • 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
    • B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
    • B29C73/24—Apparatus or accessories not otherwise provided for
    • B29C73/30—Apparatus or accessories not otherwise provided for for local pressing or local heating
    • B29C73/34—Apparatus or accessories not otherwise provided for for local pressing or local heating for local heating
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C2035/0211—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould resistance heating

Abstract

A repair device for a CFK monolith component with a double-T stringer profile, includes a three-part Al heater which has one or more heater rods adhered in its core section. The heater rods are connected to the electricity supply, and the core section has a trapezoidal outer core cross-section and a milled out groove for accomodating the heater rods. ADVANTAGE - The device is simple and reliable and is easy to use. (Dwg.3/3)

Description

Die Erfindung bezieht sich auf eine Reparaturvorrichtung für CFK-Monolithbauteile mit Doppel-T-Stringerprofilen.The invention relates to a repair device for CFRP monolith components with double-T stringer profiles.

Bei Reparaturvorrichtungen dieser Art kommt es darauf an, die Wärme zum Aushärten des faserverstärkten Zusatzkunststoffs möglichst gleichmäßig in die Reparaturstelle einzuleiten. Nach einem internen Stand der Technik wird die Wärme durch elektrische Heizmatten oder durch Infrarotstrahler erzeugt. Bei Verwendung von Heizmatten ergibt sich eine ungleichmäßige Temperaturverteilung. Die Verwendung der Infrarotstrahler ist nur auf leicht zugängliche Reparaturstellen beschränkt.With repair devices of this type it is important to heat the Harden the fiber-reinforced additional plastic as evenly as possible to initiate the repair. According to an internal state of the art the heat is generated by electric heating mats or by infrared heaters generated. When using heating mats, the result is uneven Temperature distribution. The use of the infrared heater is only on easily accessible repair points limited.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Reparaturvorrichtung der eingangs genannten Art aufzuzeigen, mit der diese Nachteile in einfacher und rationeller Weise behoben werden.The present invention has for its object a To show repair device of the type mentioned, with which Disadvantages can be solved in a simple and rational manner.

Diese Aufgabe wird durch die im Anspruch 1 aufgezeigten Maßnahmen gelöst. In den Unteransprüchen sind Ausgestaltungen und Weiterbildungen angegeben und in der nachfolgenden Beschreibung wird ein Ausführungsbeispiel erläutert und in den Figuren der Zeichnung skizziert. Es zeigtThis object is achieved by the measures indicated in claim 1. Refinements and developments are given in the subclaims and in the following description an embodiment explained and sketched in the figures of the drawing. It shows

Fig. 1 eine perspektivische Ansicht eines dreiteiligen Alu-Heizstabes in zusammengebautem Zustand. Fig. 1 is a perspective view of a three-part aluminum heating element in the assembled state.

Fig. 2a eine Längsansicht des Heizstabes mit den in eine Nut des Mittelkern-Teiles eingelegten Heizvorrichtungen und deren Leitungen, FIG. 2a is a longitudinal view of the heating rod with the inserted into a groove of the central core part heating devices and their leads,

Fig. 2b eine Seitenansicht des Heizstabes gemäß Fig. 2a, Fig. 2b is a side view of the heating rod according to Fig. 2a,

Fig. 2c einen Schnitt entlang der Linie A-A gemäß Fig. 2a, Fig. 2c shows a section along the line AA according to Fig. 2a,

Fig. 3 eine Frontansicht eines Doppel-T-Stringerprofils mit an dessen Steg angeordneten Heizvorrichtungen. Fig. 3 is a front view of a double-T stringer profile with heaters arranged on its web.

Die Fig. 1 veranschaulicht ein Ausführungsbeispiel einer Reparaturvorrichtung für CFK-Monolithbauteile mit Doppel-T-Stringerprofilen, das aus drei Grundwerkteilen besteht, nämlich den beiden, je mit einer schrägen Fläche versehenen Abdeckelementen 11a, 11b und dem dazwischengelagerten, konisch geformten Kernteil 12, der mit einer Nut 12a versehen ist, die sich ihrer Tiefe nach bis über die Hälfte des Kernquerschnitts erstreckt. In diese Nut 12a werden an ihrem mit Radien versehenen Boden die Heizstäbe 13a, 13b eingeklebt und über Leitungen 14 mit dem Stromnetz verbunden. Im zusammengebauten Zustand bildet der Alu-Heizkörper 10 einen rechteckigen Stab. Fig. 1 illustrates an embodiment of a repair apparatus for CFRP monolith components with a double-T-Stringerprofilen, consisting of three base parts, namely the two, each provided with an inclined surface covering elements 11 a, 11 b and the interposed therebetween, conically shaped core part 12 , which is provided with a groove 12 a, the depth of which extends to over half of the core cross section. In this groove 12 a the heating rods 13 a, 13 b are glued to their radii bottom and connected via lines 14 to the power supply. In the assembled state, the aluminum radiator 10 forms a rectangular rod.

In einem Ausführungsbeispiel werden die in der Nut 12a eingeklebten Heizstäbe 13a, 13b mit einem gut wärmeleitenden Material 14a abgedeckt und darüber dann eine Schicht 14b wärmedämmenden Materials gelegt. Hierdurch wird eine gleichmäßige Wärmeverteilung in dem oder den Heizkörpern 10 gewährleistet. Für die vorgesehenen Reparaturarbeiten - insbesondere im Flugzeugbau - an den Doppel-T-Stringerprofilen W sind Längen für die aus Aluminium gefertigten Heizkörper 10 von 280 bis 400 mm erforderlich und dementsprechend auch angepaßte Heizstabablängen. In der Fig. 3 ist in schematischer Darstellung die montierte Reparaturvorrichtung im Einsatz gezeigt.In one embodiment, the heating rods 13 a, 13 b glued into the groove 12 a are covered with a good heat-conducting material 14 a and then a layer 14 b of heat-insulating material is placed over them. This ensures uniform heat distribution in the radiator (s) 10 . For the intended repair work - in particular in aircraft construction - on the double-T stringer profiles W, lengths for the radiators 10 made of aluminum of 280 to 400 mm are required and correspondingly adapted heating rod lengths. In Fig. 3 the assembled repair device is shown in use in a schematic representation.

Statt in einer Nut 12a können die Heizstäbe 13a, 13b auch in einer entsprechenden Bohrung im Kernteil 12 gelagert werden. In diesem Falle sind natürlich auch Sackbohrungen zum Durchführen der Stromleitungen 14 erforderlich. Wie die Praxis nachweisen konnte, ergab sich durch die oben beschriebenen Maßnahmen eine Arbeitszeitersparnis gegenüber dem Stand der Technik von über 70%.Instead of in a groove 12 a, the heating rods 13 a, 13 b can also be stored in a corresponding bore in the core part 12 . In this case, blind holes are of course also necessary for the passage of the power lines 14 . As practice has been able to demonstrate, the measures described above resulted in a working time saving of over 70% compared to the state of the art.

Claims (5)

1. Reparaturvorrichtung für CFK-Monolithbauteile mit Doppel-T-Stringerprofilen, dadurch gekennzeichnet, daß die Vorrichtung in Form eines dreiteiligen Alu-Heizkörpers (10) ausgebildet ist, in dessen Kernteil (12) ein oder mehrere Heizstäbe (13a, 13b) eingeklebt sind, die in bekannter Weise über Leitungen (14) mit dem Stromnetz verbunden sind.1. Repair device for CFRP monolith components with double T-stringer profiles, characterized in that the device is in the form of a three-part aluminum radiator ( 10 ), in the core part ( 12 ) of one or more heating elements ( 13 a, 13 b) are glued, which are connected in a known manner via lines ( 14 ) to the power grid. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Kernteil (12) in seinem Außenformquerschnitt trapezartig ausgebildet ist und in seinem Mittelteil eine eingefräßte Nut (12a) für die Aufnahme der Heizstäbe (13a, 13b) aufweist.2. Device according to claim 1, characterized in that the core part ( 12 ) is trapezoidal in its outer shape cross-section and has a milled groove ( 12 a) in its central part for receiving the heating rods ( 13 a, 13 b). 3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Leerraum der Nut (12a) nach dem Einkleben der Heizstäbe (13a, 13b) zuerst mit einem gut wärmeleitenden Material (14a) gefüllt und dann mit einer Lage wärmedämmenden Materials (14b) abgedeckt wird.3. Apparatus according to claim 1 or 2, characterized in that the empty space of the groove ( 12 a) after gluing the heating rods ( 13 a, 13 b) first filled with a good heat-conducting material ( 14 a) and then with a layer of thermal insulation Material ( 14 b) is covered. 4. Vorrichtung nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß der Außenquerschnitt des Alu-Heizkörpers (10) in seiner Höhe (h) und Länge (l) sowie den Radien (r) den Innenmaßen des Doppel-T-Stringerprofils (W) entspricht.4. Device according to claims 1 to 3, characterized in that the outer cross section of the aluminum radiator ( 10 ) in its height (h) and length (l) and the radii (r) the internal dimensions of the double-T stringer profile (W ) corresponds. 5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß zur Einbringung der Heizstäbe (13a, 13b) in dem Kernteil (12) kreisrunde Längsbohrungen (13′, 13b′) angeordnet sind.5. Device according to one of claims 1 to 4, characterized in that for the introduction of the heating rods ( 13 a, 13 b) in the core part ( 12 ) circular longitudinal bores ( 13 ', 13 b') are arranged.
DE19914101854 1991-01-23 1991-01-23 Repair device for CFK monolith with double-T stringer - includes three part aluminium@ heater with electrically heated rod(s) in core section Expired - Lifetime DE4101854C1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19914101854 DE4101854C1 (en) 1991-01-23 1991-01-23 Repair device for CFK monolith with double-T stringer - includes three part aluminium@ heater with electrically heated rod(s) in core section
DE202004020856U DE202004020856U1 (en) 1991-01-23 2004-04-29 Multipurpose cold storage container for refrigerating apparatus, has top surface shaped to contain or to house goods in stable manner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19914101854 DE4101854C1 (en) 1991-01-23 1991-01-23 Repair device for CFK monolith with double-T stringer - includes three part aluminium@ heater with electrically heated rod(s) in core section

Publications (1)

Publication Number Publication Date
DE4101854C1 true DE4101854C1 (en) 1992-06-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE19914101854 Expired - Lifetime DE4101854C1 (en) 1991-01-23 1991-01-23 Repair device for CFK monolith with double-T stringer - includes three part aluminium@ heater with electrically heated rod(s) in core section

Country Status (1)

Country Link
DE (1) DE4101854C1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010094808A2 (en) * 2009-02-23 2010-08-26 Airbus Operations Gmbh Method for at least partially remachining or replacing a reinforcement element of a fibre composite structure and associated connecting device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NICHTS ERMITTELT *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010094808A2 (en) * 2009-02-23 2010-08-26 Airbus Operations Gmbh Method for at least partially remachining or replacing a reinforcement element of a fibre composite structure and associated connecting device
WO2010094808A3 (en) * 2009-02-23 2010-12-29 Airbus Operations Gmbh Method for at least partially remachining or replacing a reinforcement element of a fibre composite structure and associated connecting device
CN102325647A (en) * 2009-02-23 2012-01-18 空中客车运营有限公司 Method for at least partially remachining or replacing reinforcement element of fibre composite structure and associated connecting device
RU2487799C2 (en) * 2009-02-23 2013-07-20 Эйрбас Оператионс Гмбх Method of, at least, partial recovery or replacement of structure reinforcement element of fibrous composite and appropriate connector
CN102325647B (en) * 2009-02-23 2014-01-08 空中客车运营有限公司 Method for at least partially remachining or replacing reinforcement element of fibre composite structure and associated connecting device
US8726965B2 (en) 2009-02-23 2014-05-20 Airbus Operations Gmbh Method for at least partially reworking or replacing a reinforcement element of a fibre composite structure and associated connecting device

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Legal Events

Date Code Title Description
8100 Publication of the examined application without publication of unexamined application
D1 Grant (no unexamined application published) patent law 81
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: DEUTSCHE AEROSPACE AIRBUS GMBH, 2000 HAMBURG, DE

8327 Change in the person/name/address of the patent owner

Owner name: DAIMLER-BENZ AEROSPACE AIRBUS GMBH, 21129 HAMBURG,

8327 Change in the person/name/address of the patent owner

Owner name: DAIMLERCHRYSLER AEROSPACE AIRBUS GMBH, 21129 HAMBU

8327 Change in the person/name/address of the patent owner

Owner name: EADS AIRBUS GMBH, 21129 HAMBURG, DE

8327 Change in the person/name/address of the patent owner

Owner name: AIRBUS DEUTSCHLAND GMBH, 21129 HAMBURG, DE

8327 Change in the person/name/address of the patent owner

Owner name: AIRBUS OPERATIONS GMBH, 21129 HAMBURG, DE