EP3770091B1 - Maschine zum wickeln von compositmaterial auf einen kern - Google Patents

Maschine zum wickeln von compositmaterial auf einen kern Download PDF

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Publication number
EP3770091B1
EP3770091B1 EP20186643.1A EP20186643A EP3770091B1 EP 3770091 B1 EP3770091 B1 EP 3770091B1 EP 20186643 A EP20186643 A EP 20186643A EP 3770091 B1 EP3770091 B1 EP 3770091B1
Authority
EP
European Patent Office
Prior art keywords
mandrel
peripheral
winding
rollers
machine according
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.)
Active
Application number
EP20186643.1A
Other languages
English (en)
French (fr)
Other versions
EP3770091A1 (de
Inventor
Tiziano Fracassi
Mirco BATTAGLIA
Andrei CUTRONO RAKHIMOV
Marco Antonio CELLI
Alessandro Coturri
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.)
Mec Industries Srl
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Mec Industries Srl
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Publication date
Application filed by Mec Industries Srl filed Critical Mec Industries Srl
Publication of EP3770091A1 publication Critical patent/EP3770091A1/de
Application granted granted Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding mechanisms
    • B65H18/14—Mechanisms in which power is applied to web roll, e.g. to effect continuous advancement of web
    • B65H18/20—Mechanisms in which power is applied to web roll, e.g. to effect continuous advancement of web the web roll being supported on two parallel rollers at least one of which is driven
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/006—Winding articles into rolls
    • B65H29/008—Winding single articles into single rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/414—Winding
    • B65H2301/4146—Winding involving particular drive arrangement
    • B65H2301/41466—Winding involving particular drive arrangement combinations of drives
    • B65H2301/41468—Winding involving particular drive arrangement combinations of drives centre and nip drive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/514—Modifying physical properties
    • B65H2301/5143—Warming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/13—Details of longitudinal profile
    • B65H2404/137—Means for varying longitudinal profiles
    • B65H2404/1372—Means for varying longitudinal profiles anti-deflection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/40—Shafts, cylinders, drums, spindles
    • B65H2404/43—Rider roll construction

Definitions

  • the rolling table winding machine exploits the rolling motion of the mandrel, which is transmitted by the translation movement of the upper table with respect to the lower table.
  • Each winding step corresponds to a forward and return stroke of the upper table, with consequent variable dimensions.
  • the aforesaid operating steps involve large moving masses, with high energy costs and high risk of danger to operators.
  • the rolling table winding machine operates with the mandrel always idle and this aspect causes a rolling friction on the prepreg fabric only in two contact areas, due to rolling of the mandrel.
  • the mandrel starts to roll after overcoming its inertia.
  • This aspect translates into an initial rubbing of the mandrel on the prepreg fabric, which can become wrinkled, nullifying the correct compaction thereof.
  • the industrial use of the rolling table winding machine is therefore optimized for mandrels of limited sizes and weights, while instead its performance is less than optimal with mandrels having diameters exceeding 250-300 mm, lengths exceeding 6000-6500 mm and weights exceeding 400-500 kg.
  • the rolling table winding machine exploits the concept of pressure applied by the downward thrust of the upper table, where the contact areas between mandrel, prepreg fabric and parallel tables are two, aligned on the vertical plane with respect to the working plane.
  • the pressure applied by the upper table on the mandrel and the weight of the mandrel in fact cause two forces aligned on the vertical plane.
  • the resulting pressure can be damaging to the point that it nullifies the precision of the operations.
  • the filament winding technique requires a high percentage by volume of resin (from 45% - 55%), which causes resin excesses the end of the production processes of the products.
  • Resin has a modulus of elasticity close to zero, and therefore the excess resin with which the filament winding technique operates is a limitation both for reaching the desired weights of the products and for their mechanical performance, represented more specifically by Young's modulus.
  • Young's modulus Although it is possible to remove part of the excess resin from the products with subsequent processes, it is highly probable that the space left free will be filled with air bubbles that compromise the final compaction of the fibers of the products.
  • fibers with a very high modulus of elasticity are subject to deteriorations, as they are very sensitive to mechanical stresses and frictions.
  • the object of the invention is to overcome the negative aspects and operating problems of current machinery for winding preimpregnated fabrics made of composite material on a mandrel, in particular rolling table machinery.
  • mandrel shall mean both a form about which the semi-finished product is produced, removable therefrom, and a semi-finished product to which a further coating of fabric made of composite material must be applied.
  • the peripheral roller 4 is made, preferably but not exclusively, of metal materials and is removable from the operating position.
  • the peripheral roller 4 is not motor-driven, but only rotatingly supported or braked by means of specific constraint means (not illustrated), as it only performs the additional task of controlling the friction and the tension on the prepreg fabric 6.
  • the rotation motion of the peripheral roller 4 can therefore be idle or braked, and can be synchronous or asynchronous with respect to the mandrel 5 and to the peripheral rollers 2 and 3.
  • the peripheral roller 4 ensures an adequate rolling friction, if idle, or an adequate sliding friction, if braked, so as to obtain a correct mechanical tension on the prepreg fabric 6 during winding on the mandrel 5, for the purposes of achieving the optimal compaction thereof.
  • the folding arms 8 allow the peripheral roller 4 to be maintained above the mandrel 5 or to move it from the operating position, to allow simpler handling of the mandrel 5 for example with the use of a bridge crane.
  • the table 1 allows the prepreg fabric 6, previously cut to size, to be positioned correctly before starting to wind it on the mandrel 5. In this way positioning errors, which must be linear and accurate in the friction area F2 for the entire length of the mandrel 5, are prevented, consequently preventing propagations of position defects during the various winding steps of the prepreg fabric 6 on the mandrel 5 (for example, if the prepreg fabric 6 is positioned misaligned with respect to the mandrel 5, a spiral of prepreg fabric 6 will be formed thereon instead of a cylinder or of a cone that accurately reproduces the shape thereof).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulding By Coating Moulds (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Winding Filamentary Materials (AREA)

Claims (10)

  1. Maschine zum Wickeln von vorimprägnierten Geweben aus Compositmaterial, umfassend Fasern und wärmehärtendes Kunstharz, auf einen Kern, dadurch gekennzeichnet, dass sie Folgendes umfasst:
    - eine flache Stützfläche für ein vorimprägniertes Gewebe (6), das in einem Bogen vorgeschnitten ist;
    - einen Formungskern (5) mit einer Drehachse (A5) zum Wickeln des besagten vorimprägnierten Gewebes (6);
    - - ein Paar Umfangsrollen (2, 3) mit entsprechenden Drehachsen (A2, A3) unter der Drehachse (A5) des Kerns (5);
    - mindestens eine Umfangsrolle (4) mit einer Drehachse (A4) oberhalb der Drehachse (A5) des Kerns (5);
    - ein Paar Arme (8) zum Stützen und Bewegen der Umfangsrolle (4), umfassend Beschränkungsmittel für die besagte Umfangsrolle (4), die geeignet sind, eine freie oder gebremste Bewegung derselben zu ermöglichen;
    - einen strukturellen Rahmen (7) zum Stützen des Kerns (5), der Umfangsrollen (2, 3) und der Arme (8) der Umfangsrolle (4);
    - ein erstes Elektromotormittel(15) und ein zweites Motormittel (16) für die unabhängige und selektive Steuerung der Drehung des Kerns (5) und der Umfangsrollen (2, 3);
    wobei das besagte erste und zweite Elektromotormittel (15, 16) jeweils die freie, motorisierte oder gebremste Drehung des Kerns (5) und der Umfangsrollen (2, 3) verursachen, und wobei die Arme (8) die Umfangsrolle (4) in Kontakt mit dem Kern (5) bringen, um zwischen den Umfangsrollen (2, 3, 4) und dem Kern (5) entsprechende Roll- oder Gleitreibungsbereiche (F2, F3, F4) zu schaffen, die geeignet sind, auf dem vorimprägnierten Gewebe (6) eine mechanische Spannung zu bestimmen, die fähig ist, dessen Wickeln und Verdichten auf dem Kern (5) zu fördern.
  2. Maschine gemäß Anspruch 1, dadurch gekennzeichnet, dass sie einen Mechanismus (11) zur Übertragung des Drehbefehls von den besagten Motormitteln (15) auf die besagte Drehachse (A5) umfasst, wobei der besagte Mechanismus (11) reversibel auf den Kern (5) anwendbar ist, so dass der besagte Kern (5) entfernbar sein kann.
  3. Maschine gemäß Anspruch 1, dadurch gekennzeichnet, dass sie einen Mechanismus (12) umfasst, der an den Umfangsrollen (2, 3) angebracht ist, um den Drehbefehl von den besagten Motormitteln (16) auf die besagten Drehachsen (A2, A3) zu übertragen.
  4. Maschine gemäß Anspruch 1, dadurch gekennzeichnet, dass die Umfangsrollen (2, 3) Heizmittel umfassen, die geeignet sind, die Haftung des vorimprägnierten Gewebes (6) auf dem Kern (5) während des ersten Wickelschrittes zu fördern.
  5. Maschine gemäß Anspruch 1, dadurch gekennzeichnet, dass sie eine Steuertafel(10) des ersten und zweiten Elektromotormittels (15, 16) zum Drehen des Kerns (5) und der Umfangsrollen (2, 3) umfasst.
  6. Maschine gemäß Anspruch 1, dadurch gekennzeichnet, dass sie einen strukturellen Rahmen (7) zum Stützen des Kerns (5), der Umfangsrollen (2, 3) und der Arme (8) zum Stützen und Bewegen der Umfangsrolle (4) umfasst.
  7. Maschine gemäß Anspruch 1, dadurch gekennzeichnet, dass sie Aktuatoren (9) zum Einstellen und Korrigieren des horizontalen Abstands zwischen den Drehachsen (A2, A3) der Umfangsrollen (2, 3) umfasst.
  8. Maschine gemäß Anspruch 1, dadurch gekennzeichnet, dass sie Sensormittel (13) zur vertikalen Erfassung der Position der Umfangsrollen (2, 3) umfasst.
  9. Maschine gemäß Anspruch 1, dadurch gekennzeichnet, dass sie Aktuatormittel (14) für die vertikale Korrektur der Ausrichtung und der Biegung der Drehachsen (A2, A3) der Umfangsrollen (2, 3) umfasst.
  10. Maschine gemäß Anspruch 1, dadurch gekennzeichnet, dass die besagte flache Fläche einen Tisch (1) umfasst, auf dem das vorimprägnierte Gewebe (6), das in einem Bogen vorgeschnitten ist, läuft, wobei der besagte Tisch (1) eine gummibeschichtete Oberfläche umfasst, die geeignet ist, eine Reibung (F4) auf dem vorimprägnierten Gewebe (6) zu bestimmen, um dessen mechanische Spannung im Reibungsbereich (F1) zu erhöhen und folglich dessen Verdichtung auf dem Kern (5) zu verbessern.
EP20186643.1A 2019-07-25 2020-07-20 Maschine zum wickeln von compositmaterial auf einen kern Active EP3770091B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102019000012891A IT201900012891A1 (it) 2019-07-25 2019-07-25 Macchina per l’avvolgimento di tessuti in materiale composito su un mandrino

Publications (2)

Publication Number Publication Date
EP3770091A1 EP3770091A1 (de) 2021-01-27
EP3770091B1 true EP3770091B1 (de) 2022-06-08

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Application Number Title Priority Date Filing Date
EP20186643.1A Active EP3770091B1 (de) 2019-07-25 2020-07-20 Maschine zum wickeln von compositmaterial auf einen kern

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EP (1) EP3770091B1 (de)
IT (1) IT201900012891A1 (de)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3236471A (en) * 1963-12-02 1966-02-22 Beloit Corp Drum winder for paper and the like
US4475696A (en) * 1982-09-29 1984-10-09 Birch Brothers Southern Incorporated Two station winding apparatus
DE4035143C2 (de) * 1990-11-06 1994-09-22 Stahlkontor Maschinenbau Doppeltragwalzen-Wickelmaschine zum kontinuierlichen Aufwickeln einer von unten her durch den Spalt zweier Tragwalzen eines oberen Tragwalzenpaares hindurchgeführten Warenbahn bzw. von mehreren nebeneinanderliegenden Nutzenstreifen aus Kunststoff, Vlies, Papier oder dgl.
US5626707A (en) * 1995-02-09 1997-05-06 Revolution Golf, Inc. Apparatus for manufacturing composite tubular articles
ITFI980131A1 (it) * 1998-06-01 1999-12-01 Celli Spa Macchina bobinatrice o ribobinatrice per la formazione di rotoli di materiale nastriforme di grande diametro
DE202006012763U1 (de) * 2006-08-18 2006-10-19 Voith Patent Gmbh Rollenwickelvorrichtung zum Aufwickeln einer Materialbahn
DE102006043629A1 (de) * 2006-09-18 2008-03-27 Voith Patent Gmbh Wickelmaschine mit Linearmotoren
DE102010041819A1 (de) * 2010-09-30 2012-04-05 Voith Patent Gmbh Rollenwickelvorrichtung und Verfahren zur Herstellung von Wickelrollen

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EP3770091A1 (de) 2021-01-27

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