EP4397478B1 - Strohwelleinheit und -verfahren - Google Patents

Strohwelleinheit und -verfahren

Info

Publication number
EP4397478B1
EP4397478B1 EP24174784.9A EP24174784A EP4397478B1 EP 4397478 B1 EP4397478 B1 EP 4397478B1 EP 24174784 A EP24174784 A EP 24174784A EP 4397478 B1 EP4397478 B1 EP 4397478B1
Authority
EP
European Patent Office
Prior art keywords
processing path
straw
blades
corrugating
blade
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
EP24174784.9A
Other languages
English (en)
French (fr)
Other versions
EP4397478A2 (de
EP4397478A3 (de
Inventor
Fabrizio FAZZIOLI
Maurizio ALBERTI
Massimo Fortini
Giuliano Gamberini
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.)
GD SpA
Original Assignee
GD SpA
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 GD SpA filed Critical GD SpA
Publication of EP4397478A2 publication Critical patent/EP4397478A2/de
Publication of EP4397478A3 publication Critical patent/EP4397478A3/de
Application granted granted Critical
Publication of EP4397478B1 publication Critical patent/EP4397478B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/20—Corrugating; Corrugating combined with laminating to other layers
    • B31F1/205—Corrugating tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
    • B31D5/00—Multiple-step processes for making three-dimensional [3D] articles
    • B31D5/0095—Making drinking straws
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G21/00—Table-ware
    • A47G21/18—Drinking straws or the like
    • A47G21/186—Details of bendable straws

Definitions

  • the present invention relates to a corrugating unit and method for a straw.
  • a corrugating unit and method for a straw are provided, according to what is established in the attached independent claims.
  • the reference number 1 indicates as a whole a straw (made of paper or plastic material) which is applied to a beverage package.
  • the straw 1 has a flat end 2 (which is held by the lips of the user) and a pointed end 3 (to more effectively break through the cap that seals a dispensing opening of the package).
  • the straw 1 has an intermediate corrugated portion 4 in the area of which the straw 1 can be easily bent/compressed/expanded and without breaking (namely, in an elastic manner) so as to assume, in use, the most suitable shape in order to satisfy the user.
  • the straw 1 is individually packaged (namely, it has been inserted singularly in its own wrap 5 not illustrated in Figure 1 and illustrated in Figure 2 ) after being bent in a "U" shape (i.e., by 180°) in the area of the intermediate corrugated portion 4 (the purpose of the "U" bending is to reduce the overall dimensions of the straw 1 to remain within the dimensions of the rear or front wall of the package to which the straw 1 is applied).
  • the corrugating unit 6 comprises a frame 7 which rests on the ground by means of a series of feet and supports all the various components of the corrugating unit 6.
  • the corrugating unit 6 comprises a conveyor 8 which is mounted on the frame 7 and has a plurality of seats 9, each adapted to house a corresponding straw 1; the conveyor 8 moves each seat 9 along a processing path P which extends between an input station S1 in which the seat 9 receives a smooth straw 1 and an output station S2 in which the seat 9 releases a corrugated straw 2.
  • a corrugating station S3 is provided, along which the intermediate corrugated portion 4 on each straw 1 carried by a seat 9 is formed.
  • the corrugating station S3 extends over a relatively extended section of the processing path P (namely, for more than 90° of angular extension of the processing path P which corresponds to more than half of the entire extension of the processing path P) and comprises a plurality of blades 12 (better illustrated in Figure 5 ), each having the shape of an arc of a circle.
  • the corrugating unit 6 comprises a support arm 13 which is mounted on the frame 7, is shaped like an arc of a circle in order to have the same conformation as the processing path P, and supports all the blades 12 by interposing corresponding adjustment devices 14 (better illustrated in Figures 6 and 7 ).
  • a corresponding adjustment device 14 is provided which is separate and independent of the other adjustment devices 14 and is configured to keep, in use, (namely, when the corrugating unit 6 is in operation for normal production) its blade 12 in a fixed work position relative to the frame 7 (therefore relative to the conveyor 8), and is configured to change, during an adjustment step with the conveyor 8 still (namely, when the corrugating unit 6 is still for maintenance/adjustment), the work position of the blade 12 in order to move the blade 12 close to/away from the processing path P in a separate manner and independently of the work position of the other blades 12.
  • each adjustment device 14 is configured to change radially (namely, perpendicularly to the rotation axis 11 of the drum 10) the work position of the corresponding blade 12 in order to move the blade 12 close to/away from the rotation axis 11 of the drum 10.
  • each adjustment device 14 is interposed between the frame 7 (namely, the arm 14 mounted on the frame 7) and a corresponding blade 12 and is configured to change the work position of the corresponding blade 12 in order to move the blade 12 close to/away from the processing path P (namely, to the conveyor 8 which moves the seats 9 along the processing path P) in a separate manner and independently of the work position of the other blades 12. Furthermore, each adjustment device 14 is configured to maintain, in use, the corresponding blade 12 in a fixed work position relative to the frame 7 (namely, the conveyor 8 that moves the seats 9 along the processing path P).
  • the support arm 13 which supports all the adjustment devices 14 carrying the blades 12 is mounted in a movable manner on the frame 7 to move between a work position (illustrated in the attached figures) in which the blades 12 are in the area of the processing path P in order to be able to interact with the straws 1 which move along the processing path P and therefore carry out the corrugation of the straws 1, and a rest position, (not illustrated) in which the blades 12 are (relatively) away (actually a few centimetres) from the processing path P so as not to interact with the straws 1 which move along or the processing path P.
  • the rest position of the support arm 13 is used above all when it is necessary to test the corrugating unit 6 "on empty", that is, when it is necessary to operate the corrugating unit 6 without straws 1 (a rather frequent operating mode during assembly, maintenance and adjustment steps of the corrugating unit 6) to ensure that the blades 12 do not accidentally come into contact with the metal parts of the seats 9 without the interposition of the straws 1 (which are not present when the corrugating unit 6 works "on empty ").
  • each seat 9 comprises a support needle 18 which is arranged parallel to the rotation axis 11 of the drum 10 and is mounted in an axially movable manner on the conveyor 8 (namely, on the drum 10) to move perpendicular to the processing path P (i.e. parallel to the rotation axis 11) between an exchange position (illustrated in Figure 8 ) in which the support needle 18 is arranged outside a corresponding straw 1 (and therefore leaves the straw 1 free) and a holding position (illustrated in Figure 9 ) in which the support needle 18 is at least partially arranged inside the straw 1 (and therefore engages the straw while holding the straw 1).
  • the actuator device 19 can modify the holding position by axially sliding the support needle 18 while keeping, in any case, the support needle 18 inside the straw 1 to keep the straw 1 internally engaged by the support needle 18; this movement of each support needle 18 is meant to allow axial compression of the straw 1 downstream of the corrugating station S3 and in the area of the intermediate portion 4.
  • Each support needle 18 is mounted on the conveyor 8 in a rotary manner so as to rotate on itself around a central rotation axis 20 (parallel to the rotation axis 11 of the drum 10).
  • the conveyor 8 comprises an actuator device 21 which rotates each support needle 18 on itself and around the rotation axis 20 when the seat 9 is in the corrugating station S3 (namely, when the seat 9 passes through the corrugating station S3).
  • the rotation of each support needle 18 in the area of the corrugating station S3 causes a corresponding rotation of the straw 1 internally engaged by the support needle 18 and therefore allows the blades 12 to deform the straw 1 by 360°, namely, along the entire circumferential extension of the straw 1 (hence the corrugation of the straw 1 has a series of adjacent circular deformations).
  • Each support needle 18 has an intermediate indented portion 22 (namely, presenting an alternation of valleys and peaks) which is arranged in the area of the intermediate corrugated portion 4 of a straw carried by the support needle 18 and is configured to cooperate with the blades 12 to form the intermediate corrugated portion 4.
  • the intermediate indented portion 22 of each support needle 18 forms a matrix (mould) which reproduces in negative the shape of the intermediate corrugated portion 4 of the straw 1 whereas the blades 12 form the punches which deform the straw 1 against the matrix (the intermediate indented portion 22).
  • each adjustment device 14 comprises a screw 23 which can be rotated in both directions, and a mechanical transmission 24 which transforms the rotation movement of the screw 23 into a radial translation movement of the corresponding blade 12 in both directions.
  • the support needles 18 must have a reduced diameter in order to slip inside the corresponding straws 1 and therefore it is impossible to make the support needles 18 rigid enough to avoid, in use, a significant bending of the same.
  • the blades 12 are arranged at different distances from the processing path P (namely, from the rotation axis 11 of the drum 10) and in particular the blades 12 are arranged at progressively decreasing distances from the processing path P (namely, from the rotation axis 11 of the drum 10). Therefore, the blades 12 are arranged at progressively decreasing distances from the processing path P (namely, from the rotation axis 11 of the drum 10) as the distance of the blades 12 increases from a cantilever mounting point of each seat 9 (namely, of the corresponding support needle 18) on the conveyor 8.
  • the corrugating unit 6 described above has numerous advantages. Firstly, the corrugating unit 6 described above allows to obtain an intermediate corrugated portion 4 having a perfectly regular (uniform) shape, namely, in which all the rings of the corrugation have exactly the same depth.
  • each blade 12 is adjustable in a completely independent way of the position of the other blades 12 and consequently it is possible to give each blade 12 the optimal position to obtain the optimal deformation (that is, having the desired depth) of the straw 1 which impacts against the blade 12, compensating for all the negative effects that would determine a non-optimal deformation (that is, not having the desired depth); in particular, the adjustment of the position of each blade 12 allows to compensate for the flexions of each support needle 18 which increase as moving away from the end where the support needle 18 is mounted in cantilevered manner.
  • corrugating unit 6 described above is simple, inexpensive and compact to manufacture.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Walking Sticks, Umbrellas, And Fans (AREA)
  • Ceramic Capacitors (AREA)
  • Sheet Holders (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)

Claims (14)

  1. Wellenbildungseinheit (6) für einen Trinkhalm (1), umfassend:
    einen Rahmen (7);
    mindestens eine Aufnahme (9), die ausgelegt ist, den Trinkhalm (1) aufzunehmen;
    eine Fördereinrichtung (8), die konfiguriert ist, die Aufnahme (9), die den Trinkhalm (1) trägt, entlang eines Verarbeitungswegs (P) zu bewegen; und
    eine Wellenbildungsstation (S3), die entlang des Verarbeitungswegs (P) angeordnet ist und mehrere Blätter (12) umfasst, die alle parallel zum Verarbeitungsweg (P) angeordnet sind und derart auf dem Rahmen (7) angebracht sind, dass sie im Gebrauch in Bezug auf die Fördereinrichtung (8) feststehend bleiben, derart, dass die Aufnahme (9), während sie sich entlang des Verarbeitungswegs (P) bewegt, bewirkt, dass der Trinkhalm (1) mit den Blättern (12) in Kontakt gelangt, womit eine Verformung des Trinkhalms (1) im Bereich jedes Blatts (12) bestimmt wird;
    wobei die Wellenbildungseinheit (6) dadurch gekennzeichnet ist, dass sie einen Tragarm (13) umfasst, der alle Blätter (12) trägt und an dem Rahmen (7) in einer beweglichen Weise angebracht ist, derart, dass er sich zwischen einer Arbeitsposition, in der sich die Blätter (12) im Bereich des Verarbeitungswegs (P) befinden, und einer Ruheposition, in der die Blätter (12) vom Verarbeitungsweg (P) entfernt sind, bewegt.
  2. Wellenbildungseinheit (6) nach Anspruch 1, wobei der Tragarm (13) so angelenkt ist, dass er sich um eine erste Drehachse (15) zwischen der Arbeitsposition und der Ruheposition dreht.
  3. Wellenbildungseinheit (6) nach Anspruch 1 oder 2 und umfassend einen Anlagekörper (16), der einen Endanschlag für den Tragarm (13) bildet, um die Arbeitsposition so einzurichten, dass der Tragarm (13) in der Arbeitsposition am Anlagekörper (16) anliegt.
  4. Wellenbildungseinheit (6) nach Anspruch 1, 2 oder 3 und umfassend eine Aktorvorrichtung (17), die den Tragarm (13) zwischen der Arbeitsposition und der Ruheposition bewegt.
  5. Wellenbildungseinheit (6) nach einem der Ansprüche von 1 bis 4, wobei:
    die Fördereinrichtung (8) eine Trommel (10) umfasst, die die Aufnahme (9) trägt und derart angebracht ist, dass sie sich um eine zweite, mittige Drehachse (11) dreht;
    der Verarbeitungsweg (P) kreisförmig ist; und
    jedes Blatt (12) die Form eines Kreisbogens hat.
  6. Wellenbildungseinheit (6) nach einem der Ansprüche von 1 bis 5, wobei:
    die Aufnahme (9) eine Trägernadel (18) umfasst, die auf eine axial bewegliche Weise an der Fördereinrichtung (8) angebracht ist, derart, dass sie sich senkrecht zum Verarbeitungsweg (P) zwischen einer Wechselposition, in der die Trägernadel (18) auf der Außenseite des Trinkhalms (1) angeordnet ist, und einer Halteposition, in der die Trägernadel (18) zumindest teilweise im Inneren des Trinkhalms (1) angeordnet ist, bewegt; und
    eine Aktorvorrichtung (19) bereitgestellt ist, die die Trägernadel (18) axial bewegt, die Trägernadel (18) in der Wechselposition anordnet, wenn sich die Aufnahme (9) in einer Eingangsstation (S1) oder in einer Ausgangsstation (S2) an den zwei Enden des Verarbeitungswegs (P) befindet, und die Trägernadel (18) in der Halteposition anordnet, wenn sich die Aufnahme (9) zwischen der Eingangsstation (S1) und der Ausgangsstation (S2) befindet.
  7. Wellenbildungseinheit (6) nach Anspruch 6, wobei:
    die Trägernadel (18) auf eine drehbare Weise an der Fördereinrichtung (8) angebracht ist, derart, dass sie sich um sich selbst um eine dritte, mittige Drehachse (20) dreht; und
    eine dritte Aktorvorrichtung (21) bereitgestellt ist, die die Trägernadel (18) um sich selbst und um die dritte Drehachse (20) dreht, wenn sich die Aufnahme (9) in der Wellenbildungsstation (S3) befindet.
  8. Wellenbildungseinheit (6) nach Anspruch 7, wenn abhängig von Anspruch 5, wobei:
    mehrere Einstellvorrichtungen (14) bereitgestellt sind, die jeweils konfiguriert sind, die Arbeitsposition des Blatts (12) zu ändern, um das Blatt (12) auf eine getrennte Weise und unabhängig von der Arbeitsposition der anderen Blätter (12) nahe an den Verarbeitungsweg (P) oder davon weg zu bewegen; und
    jede Einstellvorrichtung (14) konfiguriert ist, die Arbeitsposition des entsprechenden Blatts (12) radial zu ändern, um das Blatt (12) nahe an die zweite Drehachse (11) oder davon weg zu bewegen.
  9. Wellenbildungseinheit (6) nach einem der Ansprüche von 1 bis 8, wobei die Blätter (12) in verschiedenen Abständen von Verarbeitungsweg (P) angeordnet sind.
  10. Wellenbildungseinheit (6) nach Anspruch 9, wobei die Blätter (12) in fortschreitend abnehmenden Abständen vom Verarbeitungsweg (P) angeordnet sind.
  11. Wellenbildungseinheit (6) nach Anspruch 10, wobei:
    die Aufnahme (9) auf eine freitragende Weise an der Fördereinrichtung (8) angebracht ist; und
    die Blätter (12) in fortschreitend abnehmenden Abständen vom Verarbeitungsweg (P) angeordnet sind, während der Abstand der Blätter (12) ausgehend von einem Punkt der freitragenden Anbringung der Aufnahme (9) auf der Fördereinrichtung (8) zunimmt.
  12. Wellenbildungseinheit (6) nach einem der Ansprüche von 1 bis 11 und umfassend mehrere Einstellvorrichtungen (14), die jeweils konfiguriert sind, die Arbeitsposition des Blatts (12) zu ändern, um das Blatt (12) auf eine getrennte Weise und unabhängig von der Arbeitsposition der anderen Blätter (12) nahe an den Verarbeitungsweg (P) oder davon weg zu bewegen.
  13. Wellenbildungseinheit (6) nach Anspruch 12, wobei jede Einstellvorrichtung (14) konfiguriert ist, die Arbeitsposition des entsprechenden Blatts (12) zu ändern, um das Blatt (12) auf eine getrennte Weise und unabhängig von der Arbeitsposition der anderen Blätter (12) nahe an den Arbeitsweg (P) oder davon weg zu bewegen, um eine Tiefe einer Welligkeit, die durch das Blatt (12) auf dem Trinkhalm (1) hergestellt wird, zu vergrößern oder zu verkleinern.
  14. Verfahren, um einen Trinkhalm (1) zu wellen, das die folgenden Schritte umfasst:
    Bewegen einer Aufnahme (9), die ausgelegt ist, den Trinkhalm (1) aufzunehmen, mittels einer Fördereinrichtung (8) entlang eines Verarbeitungswegs (P); und
    Bewirken, indem sich die Aufnahme (9) entlang des Verarbeitungswegs (P) bewegt, dass der Trinkhalm (1) mit mehreren Blättern (12) in Kontakt gelangt, die alle in einer Wellenbildungsstation (S3) parallel zum Verarbeitungsweg (P) angeordnet sind und derart angebracht sind, dass sie im Gebrauch in Bezug auf die Fördereinrichtung (8) feststehend bleiben, um eine Verformung des Trinkhalms (1) im Bereich jedes Blatts (12) zu bestimmen;
    wobei das Wellenbildungsverfahren dadurch gekennzeichnet ist, dass ein Tragarm (13) bereitgestellt ist, der alle Blätter (12) trägt und auf eine bewegliche Weise an dem Rahmen (7) angebracht ist, derart, dass er sich zwischen einer Arbeitsposition, in der sich die Blätter (12) im Bereich des Verarbeitungswegs (P) befinden, und einer Ruheposition, in der die Blätter (12) vom Verarbeitungsweg (P) entfernt sind, bewegt.
EP24174784.9A 2021-06-17 2022-06-16 Strohwelleinheit und -verfahren Active EP4397478B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT102021000015836A IT202100015836A1 (it) 2021-06-17 2021-06-17 Unità e metodo di corrugazione di una cannuccia
EP22735613.6A EP4355568A1 (de) 2021-06-17 2022-06-16 Strohwelleinheit und -verfahren
PCT/IB2022/055583 WO2022264079A1 (en) 2021-06-17 2022-06-16 Straw corrugating unit and method

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP22735613.6A Division EP4355568A1 (de) 2021-06-17 2022-06-16 Strohwelleinheit und -verfahren

Publications (3)

Publication Number Publication Date
EP4397478A2 EP4397478A2 (de) 2024-07-10
EP4397478A3 EP4397478A3 (de) 2024-10-02
EP4397478B1 true EP4397478B1 (de) 2025-12-17

Family

ID=77801908

Family Applications (2)

Application Number Title Priority Date Filing Date
EP24174784.9A Active EP4397478B1 (de) 2021-06-17 2022-06-16 Strohwelleinheit und -verfahren
EP22735613.6A Pending EP4355568A1 (de) 2021-06-17 2022-06-16 Strohwelleinheit und -verfahren

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP22735613.6A Pending EP4355568A1 (de) 2021-06-17 2022-06-16 Strohwelleinheit und -verfahren

Country Status (3)

Country Link
EP (2) EP4397478B1 (de)
IT (1) IT202100015836A1 (de)
WO (1) WO2022264079A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4442448B1 (de) 2023-04-03 2025-12-17 G.D S.p.A. Einheit zum formen von wellen an trinkhalmen und entsprechendes verfahren

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3122977A (en) * 1964-03-03 Graham
US2985077A (en) * 1957-12-04 1961-05-23 Sidney G Graham Machine for convoluting soda straws or the like
US3641884A (en) * 1969-07-07 1972-02-15 Anton Jivoin Manufacturing flexible drinking straws
ES8608395A1 (es) * 1985-08-02 1986-07-16 Perfils Tecnics S A Maquina para el arrugado de canas succionadoras para bebidas
US10130202B1 (en) * 2014-05-07 2018-11-20 Hoffmaster Group, Inc. Flexible straw and system and method of manufacturing the same

Also Published As

Publication number Publication date
EP4397478A2 (de) 2024-07-10
WO2022264079A1 (en) 2022-12-22
IT202100015836A1 (it) 2022-12-17
EP4355568A1 (de) 2024-04-24
EP4397478A3 (de) 2024-10-02

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