EP3067300B1 - Vorrichtung zum ausbreiten und führen und zentrieren von bandförmigem material - Google Patents

Vorrichtung zum ausbreiten und führen und zentrieren von bandförmigem material Download PDF

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Publication number
EP3067300B1
EP3067300B1 EP16159548.3A EP16159548A EP3067300B1 EP 3067300 B1 EP3067300 B1 EP 3067300B1 EP 16159548 A EP16159548 A EP 16159548A EP 3067300 B1 EP3067300 B1 EP 3067300B1
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EP
European Patent Office
Prior art keywords
cylinder
elastic strings
block
connection block
spreading roll
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
EP16159548.3A
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English (en)
French (fr)
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EP3067300A1 (de
Inventor
Agostino Bassi
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.)
Fait Group SpA
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Fait Group SpA
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Publication date
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Publication of EP3067300A1 publication Critical patent/EP3067300A1/de
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Publication of EP3067300B1 publication Critical patent/EP3067300B1/de
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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
    • B65H27/00—Special constructions, e.g. surface features, of feed or guide rollers for webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/022—Registering, tensioning, smoothing or guiding webs transversely by tentering devices
    • B65H23/025—Registering, tensioning, smoothing or guiding webs transversely by tentering devices by rollers
    • B65H23/0251—Registering, tensioning, smoothing or guiding webs transversely by tentering devices by rollers with a straight axis
    • B65H23/0255—Registering, tensioning, smoothing or guiding webs transversely by tentering devices by rollers with a straight axis with axially stretchable elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2403/00—Power transmission; Driving means
    • B65H2403/40—Toothed gearings
    • B65H2403/43—Bevel gearing
    • 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
    • B65H2404/12—Rollers with at least an active member on periphery
    • B65H2404/123—Rollers with at least an active member on periphery moving in parallel to roller axis
    • B65H2404/1231—Arrangement of axially movable active elements, i.e. movable in parallel to roller axis

Definitions

  • the present invention relates to the technical field of accessories for industrial machines, in particular it relates to the technical field of apparatuses for managing and distributing ribbon-shaped material.
  • ribbon-shaped materials such as, for example, fabric, paper, films, woven materials, leather etc.
  • unwinding and winding so as to make it possible to process and use them.
  • the ribbon-shaped material must be unwound and rewound remaining as spread and as centered on the guiding rolls as possible. This prevents the ribbon-shaped material from being subject to creasing which could damage it or hinder the next treatment and the next processing, and prevents the outer edge of said ribbon-shaped material from passing beyond the end of the roll themselves, thus compromising the correct winding and rewinding operations and causing damage to the ribbon-shaped material itself.
  • Italian patent IT1314888 describes a system for spreading ribbon-shaped materials by means of a so-called widening bar.
  • the invention consists of a return cylinder of ribbon-shaped material which comprises a shaft and a plurality of discoid elements associated with said shaft, each of which is free to rotate about their axis, which is slightly inclined with respect to the axis of said shaft.
  • Said discoid elements are divided into two groups, each of which extends for approximately half of the cylinder, has equal and opposite inclinations and diverge with respect to the median point of said shaft.
  • the elastic strings are fixed to each of the ends by appropriate fastening and orientation means.
  • Said fixing and orientation means generally comprise an adjuster device adapted to accommodate and fasten the ends of said elastic strings, said adjuster device being associated with the end of said roll and coaxial thereto when it is in neutral position.
  • Said adjuster device is free to pivot with respect to said spreading roll, i.e. by inclining its axis with respect to the roll axis.
  • said adjuster device is generally either provided or associated with a user interface comprising a display on which the degree of inclination imparted to said adjuster device is shown, together with other information, e.g. related to the resulting tension of the ribbon-shaped material which runs on the roll.
  • the rolls of the prior art comprise fixing and orientation means provided with user interfaces which have a single orientation direction and thus require to install the roll with one only orientation, so that said user interface can be read by the operator.
  • This limitation may be particularly annoying in the cases in which the apparatus for winding and unwinding the ribbon-shaped material is located in a small environment and the space available for inserting the spreading roll does not allow to install it with the required orientation in order to keep the user interface oriented correctly.
  • the elastic strings of the rolls of the prior art are mutually distanced apart so as to display a given distance from one another. This distance may be detrimental because the space between two adjacent elastic strings may promote the onset of creases in the ribbon which runs on the roll, with evident mitigation of the spreading effect of the roll itself.
  • the present invention comprises a spreading roll 10 for ribbon-shaped materials, said spreading roll comprising in turn:
  • said elastic strings 13 comprise a body having a substantially "T"-shaped section with an extended flat part, respectively not very thick on one side, and a grooved coupling on the other side, said grooved coupling comprising an elongated body, which departs from said flat part for a given length with a first thickness and terminates with a second thickness which is greater than the first thickness.
  • said cylinder 11 comprises, on its surface, a plurality of channels 14 shaped so as to be engaged with the grooved coupling of said elastic strings 13, and thus allow said elastic strings 13 to freely run on the surface of said cylinder 11.
  • said fixing and orientation means of said elastic strings 11 comprise at least one adjuster device 15 comprising, in turn:
  • Said adjustment pin of said bevel gear pair 25 is adapted to be connected to an analog position indicator 29, e.g. of the Clayton type.
  • Said analog position indicator 29 is fixed to said adjustment pin of said bevel gear pair 25 and provides an indication of the inclination which, by action on said bevel pair, is transmitted to said ring nut 16 so as to cause a corresponding deformation of said elastic strings 13, which ultimately results in a modulation of the tension of the ribbon-shaped material which runs on the roll.
  • said analogue position indicator 29 is advantageously provided with a knurled ring nut on the outer edge, so as to promote the management by the operator.
  • the adjuster device 15 of the spreading roll according to the present invention is installed on both ends of the spreading roll and allows to adapt the spreading roll to many different operative situations in which the installation environment is small and limited. Indeed, the adjuster device 15 of the spreading roll according to the present invention allows to install the user interface so that it is always oriented correctly and thus so as to facilitate the operator's work.
  • the roll is firstly set according to the hosting winding apparatus and according to the winding angle of the ribbon-shaped material being processed.
  • the fastening flange 26 is tightened and said connecting rod 27 is fixed.
  • said adjuster pin 25 possibly associated with an analog position indicator 29
  • the connection block is inclined with respect to the axis of said cylinder 11, said spreading roll thus inclining the axis of said connection block with respect to the roll axis.
  • the bevel gear pair 22, 23 is operated by translating said sleeve 20, thus inclining the ring nut 16 constrained by means of said sleeve 18 and said connecting rod 27 to the fastening flange 26.
  • connection block When said connection block is inclined by a given angle with respect to the stretching roll which hosts it, consequently some of said elastic strings 13 are more elongated and others are less elongated with respect to the neutral position in which said adjuster device is coaxial to said roll and all the elastic strings have substantially the same length.
  • said plurality of channels 14 on the surface of said cylinder 11 are distanced so that the corresponding elastic strings 13 are arranged on the surface of said cylinder 11 without there being any space between the two adjacent strings. This allows to improve the spreading of the ribbon-shaped material by the roll according to the present invention because it prevents the onset of creases of the ribbon running on the roll, which creases are favored by the presence on the roll surface of gaps between adjacent elastic strings 13.

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  • Treatment Of Fiber Materials (AREA)

Claims (9)

  1. Treibwalze (10) für bandförmiges Material, aufweisend:
    - einen Zylinder (11);
    - eine Trägerwelle (12), geeignet um den Zylinder (11) zu tragen und die Rotation des Zylinders (11) um seine Achse zu ermöglichen;
    - eine Vielzahl elastischer Bänder (13), geeignet zum Eingriff in den Zylinder (11), so dass sie am äußeren Umfang des Zylinders (11) frei laufen können;
    - Mittel zur Befestigung und Ausrichtung der elastischen Bänder (13), wobei die Mittel zur Befestigung und Ausrichtung mit dem Zylinder (11) und der Trägerwelle (12) verbunden sind und geeignet sind, die elastischen Bänder (13) nebeneinander an der Oberfläche des Zylinders (11) zu halten und die Dehnung der elastischen Bänder (13) einzustellen, wobei die Mittel zur Befestigung und Ausrichtung der elastischen Bänder (13) mindestens eine Einstellungsvorrichtung (15) aufweisen, die wiederum aufweist:
    - einen Verbindungsblock, geeignet um die Welle des Zylinders (11) mit den Enden der elastischen Bänder (13) integral zu verbinden;
    - einen Einstellblock für die Spannung der elastischen Bänder (13), der mit dem Verbindungsblock verbunden ist und dadurch gekennzeichnet ist, dass er eine Kegelradpaarung (22, 23) aufweist, die geeignet ist, die Neigung des Verbindungsblocks gegenüber der Achse der Trägerwelle (12) einzustellen;
    - Befestigungsmittel, die geeignet sind, die gegenseitige Ausrichtung zwischen dem Verbindungsblock und dem Einstellblock zu arretieren.
  2. Treibwalze gemäß Anspruch 1, dadurch gekennzeichnet, dass der Verbindungsblock aufweist:
    - eine Überwurfmutter (16) mit Mitteln zur Befestigung der Enden der elastischen Bänder (13);
    - eine Hülse (18), zugehörig zur Überwurfmutter (16), zu einem Kugelgelenk (19) und zu einer Hülse (20), zur Befestigung an der Trägerwelle (12).
  3. Treibwalze gemäß einem oder mehreren der vorigen Ansprüche, dadurch gekennzeichnet, dass der Einstellblock für die Spannung der elastischen Bänder (13) aufweist:
    - ein Gehäuse (21), das mit Verbindungsmitteln zu der Hülse (20) versehen ist, wobei das Gehäuse die Kegelradpaarung (22, 23) und eine Kappe (24) aufweist;
    - einen Einstellstift (25) der Kegelradpaarung (22, 23).
  4. Treibwalze gemäß einem oder mehreren der vorigen Ansprüche, dadurch gekennzeichnet, dass die Befestigungsmittel, die geeignet sind, die gegenseitige Ausrichtung zwischen dem Verbindungsblock und dem Einstellblock zu arretieren, einen Befestigungsflansch (26) aufweisen, der mit einem Verbindungsstab (27) verbunden ist, der geeignet ist, um mit der Hülse (18) verbunden zu werden.
  5. Treibwalze gemäß einem oder mehreren der vorigen Ansprüche, dadurch gekennzeichnet, dass sie eine analoge Positionsanzeige (29) aufweist, die mit dem Einstellstift (25) verbunden ist.
  6. Treibwalze gemäß einem oder mehreren der vorigen Ansprüche, dadurch gekennzeichnet, dass die elastischen Bänder (13) einen Querschnitt mit einem im Wesentlichen T-förmigen Querschnitt mit einem erweiterten flachen Teilstück, das entsprechend auf einer Seite nicht besonders dick und auf der anderen Seite ein gekerbtes Verbindungsstück aufweisen, wobei das gekerbte Verbindungsstück eine längliche Form aufweist, die von dem flachen Teilstück aus für eine vorgegebene Länge mit einer ersten Stärke beginnt und mit einer zweiten Stärke endet, die größer ist als die erste Stärke.
  7. Treibwalze gemäß einem oder mehreren der vorigen Ansprüche, dadurch gekennzeichnet, dass der Zylinder (11) auf seiner Oberfläche eine Vielzahl von Nuten (14) aufweist, die so geformt sind, dass diese mit dem gekerbten Verbindungsstück der elastischen Bänder (13) verbunden werden können und somit den elastischen Bändern (13) ermöglichen, frei auf der Oberfläche des Zylinders (11) zu laufen.
  8. Treibwalze gemäß dem vorigen Anspruch, dadurch gekennzeichnet, dass die Nuten (14) der Vielzahl der Nuten (14) soweit voneinander auf der Oberfläche des Zylinders (11) beabstandet sind, so dass die entsprechenden elastischen Bänder (13) so auf der Oberfläche des Zylinders (11) angeordnet sind, dass zwischen zwei benachbarten Bändern kein Zwischenraum ist.
  9. Einstellvorrichtung (15) für die Treibwalze gemäß Anspruch 1, aufweisend:
    - einen Verbindungsblock, geeignet um die Welle des Zylinders (11) mit den Enden der elastischen Bänder (13) integral zu verbinden;
    - einen Einstellblock für die Spannung der elastischen Bänder (13), die mit dem Verbindungsblock verbunden sind, und der eine Kegelradpaarung (22, 23) aufweist, die geeignet ist, um die Neigung des Verbindungsblocks gegenüber der Achse der Trägerwelle (12) einzustellen;
    - Befestigungsmittel, die geeignet sind, um die gegenseitige Ausrichtung zwischen dem Verbindungsblock und dem Einstellblock zu arretieren.
EP16159548.3A 2015-03-10 2016-03-10 Vorrichtung zum ausbreiten und führen und zentrieren von bandförmigem material Active EP3067300B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITFI20150067 2015-03-10

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EP3067300A1 EP3067300A1 (de) 2016-09-14
EP3067300B1 true EP3067300B1 (de) 2017-11-15

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Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2715761A (en) * 1953-10-28 1955-08-23 Visking Corp Apparatus for expanding materials
US3344493A (en) * 1965-02-19 1967-10-03 Henry E Telgheider Spreader roll
IT1314888B1 (it) 2000-12-18 2003-01-16 Massimo Bassi Barra allargante per spianare materiale nastriforme come tessuti odaltro, in forma di rullo composito

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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