EP2341013B1 - Modular device for manually unwinding a film wound on a core - Google Patents

Modular device for manually unwinding a film wound on a core Download PDF

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Publication number
EP2341013B1
EP2341013B1 EP20100196889 EP10196889A EP2341013B1 EP 2341013 B1 EP2341013 B1 EP 2341013B1 EP 20100196889 EP20100196889 EP 20100196889 EP 10196889 A EP10196889 A EP 10196889A EP 2341013 B1 EP2341013 B1 EP 2341013B1
Authority
EP
European Patent Office
Prior art keywords
cylindrical
cylindrical hub
core
hub element
film
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
EP20100196889
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German (de)
French (fr)
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EP2341013A1 (en
Inventor
Ilario Prandelli
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.)
General Trading SpA
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General Trading SpA
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Publication date
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Publication of EP2341013A1 publication Critical patent/EP2341013A1/en
Application granted granted Critical
Publication of EP2341013B1 publication Critical patent/EP2341013B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/67—Containers, packaging elements or packages, specially adapted for particular articles or materials for web or tape-like material
    • B65D85/671—Containers, packaging elements or packages, specially adapted for particular articles or materials for web or tape-like material wound in flat spiral form
    • B65D85/672—Containers, packaging elements or packages, specially adapted for particular articles or materials for web or tape-like material wound in flat spiral form on cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B67/00—Apparatus or devices facilitating manual packaging operations; Sack holders
    • B65B67/08—Wrapping of articles
    • B65B67/085—Wrapping of articles using hand-held dispensers for stretch films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/18—Constructional details
    • B65H75/185—End caps, plugs or adapters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2402/00—Constructional details of the handling apparatus
    • B65H2402/40—Details of frames, housings or mountings of the whole handling apparatus
    • B65H2402/41—Portable or hand-held apparatus
    • B65H2402/412—Portable or hand-held apparatus details or the parts to be hold by the user, e.g. handle

Definitions

  • the present invention refers to a modular device for manually unwinding a film wound on a core, according to the preamble of claim 1.
  • the main field of application for such devices regards manual packaging of palletized goods.
  • Such prior art devices consist of a first portion that can be forcedly inserted into the core of the reel to be unwound and in a second sleeve portion, which is extended laterally outside the core.
  • a first drawback lies in the fact that varying the tensioning of the film during unwinding thereof is quite complex.
  • the step of unwinding the film is extremely jeopardised and difficult to reposition to the initial conditions due to the characteristics of the film which, in case of tearing, tends to divide into small strips very easily.
  • An object of the present invention is that of providing a modular device for manually unwinding a film wound on a core capable of overcoming the previously mentioned drawbacks of the prior art in an extremely simple, inexpensive and particularly functional manner.
  • Another object is that of providing a modular device for manually unwinding a film wound on a core in which the tensioning of the film can be varied manually during unwinding thereof without being exposed to the risk of locally damaging or tearing the film.
  • a further object is that of providing a modular device for manually unwinding a film wound on a core which allows avoiding damaging or tearing the same due to inadvertent fall and/or possible impacts the same device might be subjected to.
  • a modular device for manually unwinding a film 11 wound on a core is shown with 100.
  • Such modular device 100 as observable in figure 1 , consists of two half-reel elements 10 which can be associated to the opposite ends of the core on which the film 11 to be unwound is wound.
  • both the core and the film 11 can be of any known type/material.
  • Each of the two half-reel elements 10, whose assembled example is visible in figures 2 and 3 , comprises an element for supporting the core of the cylindrical hub 12 type and a tubular element 13.
  • the cylindrical hub element 12 comprises tapered surfaces so as to define a frusto-conical shape in which, with the device assembled, the larger base is oriented and coupled by interference inwards the cylindrical core supporting the film 11.
  • the tubular element 13 has a corresponding conical geometry.
  • cylindrical hub element 12 can be coupled integral with the core while the conical tubular element 13 is arranged inside the cylindrical/frusto-conical hub element 12 and serves as a handgrip portion of the device during unwinding of the film 11.
  • the conical tubular element 13 is locked axially, i.e. it cannot slip off, on the cylindrical/frusto-conical hub element 12, but it is rotatable with respect thereto.
  • the user solely by manually gripping the inner surface of the conical tubular element 13, rotates it with respect to the cylindrical hub element, thus allowing the unwinding of the film 11 from the relative core constrained on the conical tubular element 13.
  • cylindrical hub element 12 comprises a widened head portion 14 for selective manual gripping, in particular, with the thumb of the hand which operates on the inner surface of the conical tubular element 13, for integrally joining the cylindrical/frusto-conical hub 12 with the conical tubular element 13 during unwinding.
  • such simultaneous action can be carried out in an extremely simple manner, by operating with the palm of the hand on the inner portion of the conical tubular element 13 and with the thumb of the same hand against head portion 14 of the cylindrical/frusto-conical hub element 12.
  • the frusto-conical hub element 12 integrally supports the core on which the film 11 is wound.
  • cylindrical/frusto-conical hub element 12 comprises a cylindrical portion 15 provided, on the outer surface thereof, with constraint means 16 integral with the core.
  • integral constraint means 16 comprise rectangular-shaped projecting portions 16 arranged along the cylindrical portion 15.
  • the cylindrical portion 15 of the hub element 12 can be tapered so as to define a frusto-conical shape in which, with the device assembled, the larger base is oriented and coupled by interference inwards the cylindrical core supporting the film 11.
  • the assembly step can be carried out by forcedly inserting the fins 16 which, due to an elastic return, are secured onto the inner surface of the core, usually made of cardboard.
  • the radial anchoring fins 16 ensure an ideal interference even in case of wear of the cylindrical core supporting the film 11.
  • the hub element 12-core coupling supporting the film 11 is both guaranteed and maintained over time due to the combined effect of the geometric interference of the hub 12 on the core and due to the presence of the fins 16 arranged tangentially on the frusto-conical surface 15.
  • these projecting portions 16 interfere with the outer surface of the core bearing the film, so as to prevent any relative rotation between the core and the cylindrical/frusto-conical hub element 12.
  • the tubular element comprises a head portion 17 which can be coupled inside the widened head 14 of the cylindrical/frusto-conical hub element 12.
  • the coupling of the cylindrical/frusto-conical hub 12 with the conical tubular element 13 is of the forced and removable type and it occurs through the snap-insertion of an annular peripheral portion 18 of the head portion 17 of the conical tubular element 13 into a seat 19 provided inside the widened head 14 of the cylindrical/frusto-conical hub element 12.
  • the seat 19 is defined by the base 20 and side 21 portions of the widened head 14 of the cylindrical hub element 12 and by a rib 22 parallel to the base 20.
  • a side element 30 for protecting the outer surface 21 of the widened head 14 of the cylindrical/frusto-conical hub element 12 can be provided according to the invention for facilitating the tensioning of the film 11 during unwinding thereof.
  • FIG. 8 An example of such protective element 30, shown in figures 8 and 9 , consists in an internally C-shaped ring element 30, preferably made of rubber plastic material with high coefficient of friction, in which such ring element 30 is constrained integral with the widened head 14 of the cylindrical/frusto-conical hub element 12.
  • Such constraint can for example be obtained by snap-inserting at least one end 31 of the ring element 30 into a corresponding seat 40 obtained on the widened head 14 of the cylindrical/frusto-conical hub element 12 and the other end 32 above the rib 22.
  • the tensioning of the film occurs by manually operating simultaneously with the conical tubular element 13, for example with the palm of the hand, and with the ring 30 constrained to the cylindrical/frusto-conical hub element 12, for example with the thumb of the same hand.
  • the modular device for manually unwinding a film wound on a core attains the previously outlined objects.
  • the modular device for manually unwinding a film wound on a core of the present invention thus conceived can be subjected to numerous modifications and variants, all falling within the same invention concept; furthermore, all details can be replaced by technically equivalent elements.
  • the materials used, as well as dimensions thereof may be of any type according to the technical requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Basic Packing Technique (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Unwinding Webs (AREA)

Description

  • The present invention refers to a modular device for manually unwinding a film wound on a core, according to the preamble of claim 1.
  • The main field of application for such devices regards manual packaging of palletized goods.
  • Various devices that enable manually unwinding of a film wound on a core to perform the abovementioned function, are available in the market.
  • Generally, such prior art devices consist of a first portion that can be forcedly inserted into the core of the reel to be unwound and in a second sleeve portion, which is extended laterally outside the core.
  • The use of such devices is very simple and consists of manually imparting a rotation to the sleeve so as to arrange various layers of film around the product to be packaged.
  • However, though commonly used, such prior art devices reveal some drawbacks.
  • A first drawback lies in the fact that varying the tensioning of the film during unwinding thereof is quite complex.
  • Actually, currently there is only one way for varying the tensioning of the film during unwinding thereof, with the aim of wrapping the goods to be covered to the utmost, consisting in manually holding the film with the ensuing risk of damaging it.
  • In the latter case, i.e. in case of even partial tearing of the film, the step of unwinding the film is extremely jeopardised and difficult to reposition to the initial conditions due to the characteristics of the film which, in case of tearing, tends to divide into small strips very easily.
  • Furthermore at the moment, disadvantageously, such tearing occurs often due to inadvertent falling or impacts the reels are subjected to.
  • Document US 6027069 A discloses a modular device corresponding to the features of the preamble of claim 1.
  • An object of the present invention is that of providing a modular device for manually unwinding a film wound on a core capable of overcoming the previously mentioned drawbacks of the prior art in an extremely simple, inexpensive and particularly functional manner.
  • Another object is that of providing a modular device for manually unwinding a film wound on a core in which the tensioning of the film can be varied manually during unwinding thereof without being exposed to the risk of locally damaging or tearing the film.
  • A further object is that of providing a modular device for manually unwinding a film wound on a core which allows avoiding damaging or tearing the same due to inadvertent fall and/or possible impacts the same device might be subjected to.
  • These objects, according to the present invention, are attained by providing a modular device for manually unwinding a film wound on a core as described in claim 1.
  • Further characteristics of the invention are outlined in the subsequent claims.
  • Characteristics and advantages of a modular device for manually unwinding a film wound on a core according to the present invention shall be clearer from the following exemplifying and non-limiting description, with reference to the attached schematic drawings, wherein:
    • figure 1 is a perspective view of an embodiment of a modular device for manually unwinding a film wound on a core according to the present invention;
    • figure 2 is a perspective view of the device of figure 1;
    • figure 3 is a cross-sectional view of the device of figure 2;
    • figure 4 is a perspective view of an element of the device of figure 1;
    • figure 5 is a top view of the element of figure 4; figure 6 is a cross-sectional enlarged detail of the element of figure 4;
    • figure 7 is a perspective view of a second element of the device of figure 1;
    • figure 8 is a perspective view of a third element of the device of figure 1; and
    • figure 9 is a cross-sectional view of the device of figure 8.
  • With reference to the figures, a modular device for manually unwinding a film 11 wound on a core is shown with 100.
  • Such modular device 100, as observable in figure 1, consists of two half-reel elements 10 which can be associated to the opposite ends of the core on which the film 11 to be unwound is wound.
  • Generally, both the core and the film 11 can be of any known type/material.
  • Each of the two half-reel elements 10, whose assembled example is visible in figures 2 and 3, comprises an element for supporting the core of the cylindrical hub 12 type and a tubular element 13.
  • In a preferred embodiment the cylindrical hub element 12 comprises tapered surfaces so as to define a frusto-conical shape in which, with the device assembled, the larger base is oriented and coupled by interference inwards the cylindrical core supporting the film 11. Obviously, in such case even the tubular element 13 has a corresponding conical geometry.
  • In particular, the cylindrical hub element 12 can be coupled integral with the core while the conical tubular element 13 is arranged inside the cylindrical/frusto-conical hub element 12 and serves as a handgrip portion of the device during unwinding of the film 11.
  • According to the invention, as observable in the section shown in figure 3, the conical tubular element 13 is locked axially, i.e. it cannot slip off, on the cylindrical/frusto-conical hub element 12, but it is rotatable with respect thereto.
  • Thus, during use, the user, solely by manually gripping the inner surface of the conical tubular element 13, rotates it with respect to the cylindrical hub element, thus allowing the unwinding of the film 11 from the relative core constrained on the conical tubular element 13.
  • It is clear that the unwinding operation, due to the device of the present invention, is extremely easy, given that it does not require the user to manually rotate any element, but solely to operate on the handgrip with the palm of the hand on the inner surface of the conical tubular element 13.
  • Furthermore, the cylindrical hub element 12 comprises a widened head portion 14 for selective manual gripping, in particular, with the thumb of the hand which operates on the inner surface of the conical tubular element 13, for integrally joining the cylindrical/frusto-conical hub 12 with the conical tubular element 13 during unwinding.
  • Thus, simultaneously operating manually on the conical tubular element 13 and on the cylindrical hub 12 allows stopping the relative rotation and thus blocking the unwinding of the film 11.
  • Preferably, as mentioned above, such simultaneous action can be carried out in an extremely simple manner, by operating with the palm of the hand on the inner portion of the conical tubular element 13 and with the thumb of the same hand against head portion 14 of the cylindrical/frusto-conical hub element 12.
  • This allows varying the tensioning of the film 11 during unwinding of the same at will, without the risk of locally damaging or tearing it.
  • As described previously, the frusto-conical hub element 12 integrally supports the core on which the film 11 is wound.
  • In order to guarantee such integral coupling, the cylindrical/frusto-conical hub element 12 comprises a cylindrical portion 15 provided, on the outer surface thereof, with constraint means 16 integral with the core.
  • In the illustrated example, such integral constraint means 16 comprise rectangular-shaped projecting portions 16 arranged along the cylindrical portion 15. Preferably, as mentioned previously, the cylindrical portion 15 of the hub element 12 can be tapered so as to define a frusto-conical shape in which, with the device assembled, the larger base is oriented and coupled by interference inwards the cylindrical core supporting the film 11.
  • Such solution is extremely advantageous given that in such manner, the anchoring fins 16 ensure high interference on the inner diameter of the cylindrical core on which the plastic film 11 is wound.
  • Actually, in such case the assembly step can be carried out by forcedly inserting the fins 16 which, due to an elastic return, are secured onto the inner surface of the core, usually made of cardboard.
  • Thus, contrary to the prior art devices, the radial anchoring fins 16 ensure an ideal interference even in case of wear of the cylindrical core supporting the film 11.
  • Lastly, according to such embodiment, the hub element 12-core coupling supporting the film 11 is both guaranteed and maintained over time due to the combined effect of the geometric interference of the hub 12 on the core and due to the presence of the fins 16 arranged tangentially on the frusto-conical surface 15. In particular, these projecting portions 16 interfere with the outer surface of the core bearing the film, so as to prevent any relative rotation between the core and the cylindrical/frusto-conical hub element 12. Preferably, as shown in figure 7, also the tubular element comprises a head portion 17 which can be coupled inside the widened head 14 of the cylindrical/frusto-conical hub element 12.
  • In the shown embodiment, the coupling of the cylindrical/frusto-conical hub 12 with the conical tubular element 13 is of the forced and removable type and it occurs through the snap-insertion of an annular peripheral portion 18 of the head portion 17 of the conical tubular element 13 into a seat 19 provided inside the widened head 14 of the cylindrical/frusto-conical hub element 12.
  • As shown in figure 6, the seat 19 is defined by the base 20 and side 21 portions of the widened head 14 of the cylindrical hub element 12 and by a rib 22 parallel to the base 20.
  • Thus, the conical tubular element 13, snap-inserted into the seat 19, is locked axially with respect to the cylindrical/frusto-conical hub element 12, but rotatable with respect thereto.
  • A side element 30 for protecting the outer surface 21 of the widened head 14 of the cylindrical/frusto-conical hub element 12 can be provided according to the invention for facilitating the tensioning of the film 11 during unwinding thereof.
  • An example of such protective element 30, shown in figures 8 and 9, consists in an internally C-shaped ring element 30, preferably made of rubber plastic material with high coefficient of friction, in which such ring element 30 is constrained integral with the widened head 14 of the cylindrical/frusto-conical hub element 12.
  • Such constraint can for example be obtained by snap-inserting at least one end 31 of the ring element 30 into a corresponding seat 40 obtained on the widened head 14 of the cylindrical/frusto-conical hub element 12 and the other end 32 above the rib 22.
  • According to such last preferred embodiment, the tensioning of the film occurs by manually operating simultaneously with the conical tubular element 13, for example with the palm of the hand, and with the ring 30 constrained to the cylindrical/frusto-conical hub element 12, for example with the thumb of the same hand.
  • Thus, operating with the palm of the hand on the inner portion of the conical tubular element 13 and with the thumb of the same hand against the ring 30, allows an improved tensioning of the film 11 during unwinding thereof, due to the high friction material which the ring element 30 is made of, without the risk of locally damaging or tearing the film 11.
  • Furthermore, such ring 30 - due to the plastic rubber material thereof and arrangement thereof on the peripheral portion of the device 10, in case of inadvertent falling and/or possible impacts the device is subjected to - prevents the risk of locally damaging or tearing the film 11.
  • It has thus been observed that the modular device for manually unwinding a film wound on a core, according to the present invention attains the previously outlined objects.
  • The modular device for manually unwinding a film wound on a core of the present invention thus conceived can be subjected to numerous modifications and variants, all falling within the same invention concept; furthermore, all details can be replaced by technically equivalent elements. In practice, the materials used, as well as dimensions thereof, may be of any type according to the technical requirements.

Claims (9)

  1. Modular device (100) for manually unwinding a film (11) wound on a core consisting of two half-reel elements (10) which can be associated on opposite sides of said core, each of said two half-reel elements (10) comprising a cylindrical hub element (12), which can be coupled integral with said core, and a tubular manual gripping element (13) internally coupled to said cylindrical hub element (12), said tubular element (13) being locked axially but rotatable with respect to said cylindrical hub element (12) to enable the manual unwinding of said film (11) through relative rotation of said tubular element (13) with respect to said cylindrical hub element (12), said cylindrical hub element (12) comprising a widened head portion (14) for selective manual gripping during unwinding for integrally joining said cylindrical hub (12) with said tubular element (13), characterised in that said tubular element (13) comprises a head portion (17) which can be coupled inside said widened head (14) of said cylindrical hub element (12).
  2. Device according to claim 1 characterised in that said cylindrical hub element (12) comprises a cylindrical portion (15) provided with constraint means (16) integral with said core.
  3. Device according to claim 2 characterised in that said constraint means (16) integral with said core comprise projecting elements (16) arranged along generatrices of said cylindrical portion (15).
  4. Device according to claim 1 characterised in that the coupling of said cylindrical hub element (12) with said tubular element (13) is of the removable type and it occurs through the snap-insertion of peripheral portions (18) of said head portion (17) of said tubular element (13) into a seat (19) provided inside said widened head (14) of said cylindrical hub element (12).
  5. Device according to claim 4 characterised in that said seat (19) is defined by the base and side portions (20 21) of said widened head (14) of said cylindrical hub element (12) and a rib (22) parallel to said base (20).
  6. Device according to any one of the preceding claims characterised in that it comprises an element (30) for protecting the outer surface of said widened head (14) of said cylindrical hub element (12).
  7. Device according to claim 6 characterised in that said protective element (30) comprises an internally C-shaped ring element (30) made of rubber material with high coefficient of friction.
  8. Device according to claim 7 characterised in that said ring element (30) is constrained integral with said widened head (14) of said cylindrical hub element (12).
  9. Device according to any one of the preceding claims characterised in that said cylindrical portion (15) of said cylindrical hub element (12) comprises tapered surfaces so as to define a frusto-conical shape wherein, with the device assembled, the larger base is oriented and coupled by interference inwards the cylindrical core supporting said film (11), said tubular element (13) having a corresponding conical geometry for coupling with said frusto-conical geometry of said hub element (12).
EP20100196889 2009-12-24 2010-12-23 Modular device for manually unwinding a film wound on a core Active EP2341013B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT002298A ITMI20092298A1 (en) 2009-12-24 2009-12-24 MODULAR DEVICE FOR THE MANUAL DEVELOPMENT OF A FILM WRAPPED ON A SOUL

Publications (2)

Publication Number Publication Date
EP2341013A1 EP2341013A1 (en) 2011-07-06
EP2341013B1 true EP2341013B1 (en) 2013-07-31

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Application Number Title Priority Date Filing Date
EP20100196889 Active EP2341013B1 (en) 2009-12-24 2010-12-23 Modular device for manually unwinding a film wound on a core

Country Status (2)

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EP (1) EP2341013B1 (en)
IT (1) ITMI20092298A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202000001414A1 (en) * 2020-01-24 2021-07-24 Hipac S P A DISPENSER

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6027069A (en) * 1998-03-09 2000-02-22 Huang; Harrison Plastic membrane dispenser
TW517711U (en) * 2002-01-17 2003-01-11 Yu-Shiung Huang Applying device for plastic film reel capable of adjusting rotating tension
US7210649B2 (en) * 2005-04-25 2007-05-01 Hsiu-Man Yu Chen Membrane packing dispenser
TWM327331U (en) * 2007-08-21 2008-02-21 yu-xiong Huang Glue film applicator having braking device

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Publication number Publication date
ITMI20092298A1 (en) 2011-06-25
EP2341013A1 (en) 2011-07-06

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