EP4190731B1 - Groupe d'éjection de journal et procédé d'éjection associé - Google Patents

Groupe d'éjection de journal et procédé d'éjection associé Download PDF

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Publication number
EP4190731B1
EP4190731B1 EP22210640.3A EP22210640A EP4190731B1 EP 4190731 B1 EP4190731 B1 EP 4190731B1 EP 22210640 A EP22210640 A EP 22210640A EP 4190731 B1 EP4190731 B1 EP 4190731B1
Authority
EP
European Patent Office
Prior art keywords
roller
rollers
handling
log
pair
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
EP22210640.3A
Other languages
German (de)
English (en)
Other versions
EP4190731A1 (fr
Inventor
Giovanni BUFFA
Fabio PICCHI
Paolo LAZZARESCHI
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.)
Gambini SpA
Original Assignee
Gambini 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 Gambini SpA filed Critical Gambini SpA
Publication of EP4190731A1 publication Critical patent/EP4190731A1/fr
Application granted granted Critical
Publication of EP4190731B1 publication Critical patent/EP4190731B1/fr
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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
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/30—Lifting, transporting, or removing the web roll; Inserting core
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/2238—The web roll being driven by a winding mechanism of the nip or tangential drive type
    • B65H19/2269—Cradle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/29—Securing the trailing end of the wound web to the web roll
    • 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
    • B65H2301/4144—Finishing winding process
    • B65H2301/41445—Finishing winding process after winding process
    • B65H2301/41447—Finishing winding process after winding process discharging roll by, e.g. rolling it down a slope
    • 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
    • B65H2301/417—Handling or changing web rolls
    • B65H2301/4171—Handling web roll
    • B65H2301/4172—Handling web roll by circumferential portion, e.g. rolling on circumference
    • 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
    • B65H2404/14—Roller pairs
    • B65H2404/143—Roller pairs driving roller and idler roller arrangement
    • B65H2404/1431—Roller pairs driving roller and idler roller arrangement idler roller details
    • 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
    • B65H2404/14—Roller pairs
    • B65H2404/147—Roller pairs both nip rollers being 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
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/15—Roller assembly, particular roller arrangement
    • B65H2404/153—Arrangements of rollers facing a transport surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/10—Speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/10—Speed
    • B65H2513/11—Speed angular
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/19—Specific article or web
    • B65H2701/1924—Napkins or tissues, e.g. dressings, toweling, serviettes, kitchen paper and compresses

Definitions

  • the present invention relates to a log ejection group and to a relative ejection method.
  • the log is ejected at a certain speed from the winding rollers, which is higher, the greater the winding speed of the rewinder.
  • the log must then be stopped to be fed to the next stations, in particular to the end tail gluing device.
  • a known system employed to slow down the log comprises an inclined plane surmounted by an upper movable structure, rounded in shape in the direction of log reception, placed directly in a position to intercept the log in order to stop the log itself.
  • the surface that comes into contact with the log is made of soft material to reduce the impact of the log against it and reduce the risk of damages.
  • the structure is raised by means of a piston to allow the log to descend towards the gluing device, which takes place by rolling along the final section of the inclined plane using only the force of gravity.
  • This system which stops the log as it rolls on the inclined plane and then releases it to allow the start of a new rolling, is simple and inexpensive, but it does not guarantee a proper operation when the rewinder is producing a high number of logs per minute.
  • the log takes a certain amount of time, of the order of tenths of a second, to resume its rolling motion. This is a significant time in the cases where 50-60 logs/min are produced and therefore the log arrival rate is close to one second.
  • WO 2017/145185 A1 proposes to slow down the log by means of a series of rollers arranged above the slightly inclined plane placed at the exit from the rewinder, in which the rollers rotate at progressively lower speeds.
  • the distance between the rollers and the plane is slightly less than the diameter of the log in order to intercept each log passing on the plane.
  • the interaction of the log with a rotating roller above and a fixed plane below constitutes an important limit to the rotation speed of the rollers and therefore to the possibility of slowing down the log and in any case entails a high risk of damaging the logs.
  • the object of the present invention is to provide a log ejection group and a relative ejection method suitable for operation with high performance rewinders, which solves the drawbacks of the known systems.
  • Another object of the present invention is to provide a log ejection group and a relative ejection method that does not damage the logs despite the high rotation speeds.
  • Another object of the present invention is to provide a log ejection group and a relative ejection method capable of progressively accompanying the log towards the exit from the rewinder.
  • Another object of the present invention is to provide a log ejection group and a relative ejection method which is particularly simple and functional with low costs.
  • an ejection group indicated with 10, 10', which handles the ejection of a log 11 from a rewinding machine, not shown.
  • the logs 11 wound in the rewinder are ejected in succession, rotating according to the arrow R with a linear exit speed, schematized with the arrow F 1 , which is the greater, the greater the winding speed of the rewinder is, according to what is schematized in figures 4 and 5 .
  • the ejection group 10 subject-matter of the present invention comprises an unloading plane 12 of wound logs 11 and means for slowing down the logs, associated both above and below with the unloading plane 12.
  • the means for slowing down the logs comprise a first upper inlet roller 21, motorized, cooperating directly with the unloading plane 12 to intercept the logs 11 arriving on the unloading plane 12, and at least a first pair of handling rollers 123, motorized, located downstream of the upper inlet roller 21 and comprising an upper handling roller 22 and a lower handling roller 23 to slow down the logs advancing on the unloading plane 12.
  • the further lower inlet roller 24 is preferably realised idle.
  • the further lower inlet roller 24 could be motorized.
  • An ejection group comprising a further pair of motorized rollers located downstream of the pair of handling rollers 123 is also part of the invention.
  • the lower rollers 23, 24 are integrated in a fixed position in the unloading plane 12 and placed with their upper generatrix grazing first inclined portions 12' of the unloading plane 12, i.e. tangential to them.
  • the unloading plane 12 is an inclined plane that receives the logs 11 at the exit of the rewinder and conveys them to the next stations.
  • the unloading plane 12 may consist of successive portions also having different inclinations to each other and discontinuous in the transverse direction.
  • the second portion 12" is constituted in the example by a succession of sections spaced apart from each other in a transverse direction ( figure 1 ).
  • the upper rollers 21, 22 are arranged on an upper structure 13 adjustable in height along guides, as shown schematically by the double arrow F 2 in figures 2 to 5 , to adapt the ejection group 10 to the dimensions of the log 11, which must be intercepted on the unloading plane 12 by the upper rollers 21, 22.
  • the angular speed of the first upper inlet roller 21 is greater than the angular speed of the upper handling roller 22 located downstream.
  • the angular speed of the upper handling roller 22 is greater than the angular speed of the lower handling roller 23.
  • a similar arrangement is adopted in the pair of inlet rollers 114, if any, in which the angular speed of the first upper inlet roller 21 is greater than the angular speed of the further lower inlet roller 24.
  • the upper rollers and the lower rollers have motorizations independent of each other.
  • the ratio among pulleys results in the speed difference among the upper rollers, which is in this case a fixed value.
  • both motors are controlled by inverters, the speed differences among the rollers are controllable at will.
  • the log 11 exiting the winding zone of the rewinder proceed rolling on the first portion 12' of the unloading plane 12 until it is intercepted by the first upper roller 21, which rotates at a speed substantially equal to or slightly lower than that of the entering log 11 and slows it down by a first amount.
  • the log 11 then proceeds towards the first pair of handling rollers 123, and when intercepted by it, it continues rotating for a predetermined number of revolutions between the upper roller 22 and the lower roller 23.
  • the log 11 is first intercepted by the pair of inlet rollers 114, it continues rotating for a predetermined number of revolutions between the upper inlet roller 21 and the lower inlet roller 24 and then proceeds towards the pair of handling rollers 123 and subsequently downstream along the portion 12" of the unloading plane 12.
  • the number of rotations that the log 11 makes on the single pair of rollers 123, and possibly on the previous pair 114 if present, depends on the difference of speed between the relative upper 21, 22 and lower 23, 24 rollers.
  • the difference of speed between the upper roller 21, 22 compared to the lower roller 23, 24 of each pair of rollers 114, 123 ensures that the log 11 rotates and translates at the same time, proceeding downstream with respect to the pair of rollers 114, 123 with reduced linear speed with respect to the linear speed it had upstream of the same pair of rollers 114, 123.
  • the first upper inlet roller has an angular speed that can be set to a value equal to 10%-80% of the speed of the upstream rewinder.
  • the angular speed of the upper handling roller 22 of the pair of handling rollers 123 can be set to a value equal to 30%-80% of the speed of the first upper inlet roller 21
  • the ratio of the angular speed between the first upper inlet roller 21 and the upper handling roller 22 of the pair of rollers 123 is about 1.6, i.e., the upper handling roller 22 of the pair of handling rollers 123 has an angular speed equal to 63% of that of the first upper inlet roller 21.
  • the further lower inlet roller 24 if motorized, has an angular speed comprised between the same speed of the upper inlet roller 21 and 50% thereof.
  • the indicated speeds which are to be considered indicative only, may vary depending on the type of product.
  • a method for ejecting a log from a rewinding machine includes the steps of:
  • the relative ratio of the angular speeds of the rollers of the pair of handling rollers 123 is set so that the angular speed of the upper handling roller 22 is greater than the angular speed of the lower handling roller 23.
  • the log 11 exiting the pair of inlet rollers 114 is received between the upper 22 and lower 23 rollers of the pair of handling rollers 123.
  • the upper inlet roller 21 of the pair of inlet rollers 114 has angular speed greater than the upper handling roller 22 of the pair of handling rollers 123.
  • the log ejection group and the relative ejection method subject-matter of the present invention have the advantage of not damaging the entering logs coming from the rewinding machine at high speed.
  • the first contact with the log entering at high speed is made by causing a first partial slowdown to avoid the formation of wrinkles.
  • the pair of handling rollers advantageously exerts an increased pressure on the log exiting the ejecting group, which can be particularly advantageous if the tail is glued inside the rewinder.
  • the pair of handling rollers advantageously straightens the logs passing on the unloading plane 12.

Landscapes

  • Rollers For Roller Conveyors For Transfer (AREA)

Claims (12)

  1. Groupe d'éjection de rouleau dans une enrouleuse comprenant un plan de déchargement (12) de rouleaux enroulés (11) et des moyens de ralentissement des rouleaux associés au plan de déchargement (12), ladite unité comprenant un premier cylindre d'entrée supérieur (21) motorisé, pour intercepter les rouleaux (11) arrivant sur le plan de déchargement (12), caractérisé en ce qu'il comprend une paire (123) de cylindres de manipulation motorisés, située en aval du cylindre d'entrée supérieur (21) et comprenant un cylindre de manipulation supérieur (22) et un cylindre de manipulation inférieur (23), dans lequel le cylindre de manipulation inférieur (23) est intégré dans le plan de déchargement (12) et dans lequel le premier cylindre d'entrée supérieur (21) et le cylindre de manipulation supérieur (22) sont agencés sur une structure supérieure (13), réglable en hauteur, la vitesse angulaire du premier cylindre d'entrée supérieur (21) étant plus grande que la vitesse angulaire du cylindre de manipulation supérieur (22) situé en aval.
  2. Groupe d'éjection selon la revendication 1, caractérisé en ce que dans la paire (123) de cylindres de manipulation, la vitesse angulaire du cylindre de manipulation supérieur (22) est plus grande que la vitesse angulaire du cylindre de manipulation inférieur (23).
  3. Groupe d'éjection selon la revendication 1 ou 2, caractérisé en ce que le premier cylindre d'entrée supérieur (21) coopère avec le plan de déchargement (12) pour intercepter les rouleaux (11) arrivant sur le plan de déchargement (12).
  4. Groupe d'éjection selon la revendication 1 ou 2, caractérisé en ce qu'il comprend un cylindre d'entrée inférieur (24) supplémentaire, placé en amont de la paire (123) de cylindres de manipulation et intégré dans le plan de déchargement (12) formant avec le premier cylindre d'entrée supérieur (21) une paire (114) de cylindres d'entrée, dans laquelle la vitesse angulaire du premier cylindre d'entrée supérieur (21) est plus élevée que la vitesse angulaire du cylindre d'entrée inférieur (24) supplémentaire.
  5. Groupe d'éjection selon la revendication 4, caractérisé en ce que ledit cylindre d'entrée inférieur (24) supplémentaire est libre ou en friction.
  6. Groupe d'éjection selon la revendication 4, caractérisé en ce que ledit cylindre d'entrée inférieur (24) supplémentaire est motorisé et forme avec le premier cylindre d'entrée supérieur (21) motorisé une première paire (114) de cylindres d'entrée motorisés.
  7. Groupe d'éjection selon la revendication 6, caractérisé en ce qu'il comprend uniquement deux paires (123, 114) de cylindres motorisés.
  8. Groupe d'éjection selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend un unique moteur supérieur (14) et un unique moteur inférieur (17).
  9. Groupe d'éjection selon l'une quelconque des revendications 4 à 8, caractérisé en ce que les rouleaux supérieurs (21, 22) sont placés sur une structure supérieure (13) réglable en hauteur et en ce que les rouleaux inférieurs (23, 24) possèdent une position fixe sous le plan de déchargement (12) et sont placés avec leur génératrice supérieure tangente aux premières parties inclinées (12') du plan de déchargement (12).
  10. Procédé pour l'éjection d'un rouleau incluant les étapes de:
    - la réception d'un rouleau (11) roulant sur un plan de déchargement (12) vers un premier cylindre d'entrée supérieur (21) motorisé,
    - le transfert du rouleau (11) en aval du premier cylindre d'entrée supérieur (21),
    - la réception du rouleau (11) entre le cylindre de manipulation supérieur (22) et le cylindre de manipulation inférieur (23) d'une paire (123) de cylindres de manipulation motorisés, dans laquelle le cylindre de manipulation supérieur (22) possède une vitesse angulaire inférieure au premier cylindre d'entrée supérieur (21),
    - le transfert du rouleau (11) roulant sur le plan de déchargement (12) vers la sortie.
  11. Procédé d'éjection selon la revendication 10, caractérisé en ce que le rapport relatif des vitesses angulaires des cylindres est défini de sorte que, dans la paire (123) de cylindres de manipulation, la vitesse angulaire du cylindre de manipulation supérieur (22) soit plus grande que la vitesse angulaire du cylindre de manipulation inférieur (23).
  12. Procédé d'éjection selon les revendications 10 ou 11, caractérisé en ce que le rouleau (11) est reçu au niveau de l'entrée sur le plan de déchargement (12) par une paire (114) de cylindres d'entrée formée par le premier cylindre d'entrée supérieur (21), motorisé, et par un cylindre d'entrée inférieur (24) supplémentaire, dans laquelle le premier cylindre d'entrée supérieur (21) possède une plus grande vitesse angulaire que le cylindre d'entrée inférieur (22) supplémentaire.
EP22210640.3A 2021-12-02 2022-11-30 Groupe d'éjection de journal et procédé d'éjection associé Active EP4190731B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT202100030554 2021-12-02

Publications (2)

Publication Number Publication Date
EP4190731A1 EP4190731A1 (fr) 2023-06-07
EP4190731B1 true EP4190731B1 (fr) 2024-05-08

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ID=80448752

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22210640.3A Active EP4190731B1 (fr) 2021-12-02 2022-11-30 Groupe d'éjection de journal et procédé d'éjection associé

Country Status (3)

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US (1) US20230174333A1 (fr)
EP (1) EP4190731B1 (fr)
FI (1) FI4190731T3 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITFI20010120A1 (it) 2001-06-29 2002-12-29 Perini Fabio Spa Dispositivo per il controllo dello scarico dei rotoli da un ribobinatrice e ribobinatrice comnprendente detto dispositivo
IT1390853B1 (it) * 2008-07-31 2011-10-19 Paper Converting Machine Co Apparecchiatura per l'incollaggio del lembo terminale di rotoli o log di materiale in foglio
ITFI20130221A1 (it) 2013-09-23 2015-03-24 Futura Spa Dispositivo e metodo per controllare lo scarico dei logs da una macchina ribobinatrice.
CA2937709C (fr) * 2014-01-29 2022-05-03 Universal Tissue Technology S.R.L. Dispositif de fermeture de l'extremite de fuite d'un rouleau de materiau en bande et procede
WO2016100040A1 (fr) * 2014-12-15 2016-06-23 The Procter & Gamble Company Appareil de collage de la dernière feuille d'un log
ITUB20161108A1 (it) 2016-02-26 2017-08-26 Futura Spa Dispositivo e procedimento per controllare lo scarico dei logs da una macchina ribobinatrice.
IT201700034591A1 (it) * 2017-03-29 2018-09-29 Futura Spa Macchina e processo per la produzione di logs di materiale cartaceo.

Also Published As

Publication number Publication date
EP4190731A1 (fr) 2023-06-07
US20230174333A1 (en) 2023-06-08
FI4190731T3 (fi) 2024-05-31

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