EP3275820B1 - Dispositif de coupe d'une bande de materiau en tronçons - Google Patents

Dispositif de coupe d'une bande de materiau en tronçons Download PDF

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Publication number
EP3275820B1
EP3275820B1 EP16001663.0A EP16001663A EP3275820B1 EP 3275820 B1 EP3275820 B1 EP 3275820B1 EP 16001663 A EP16001663 A EP 16001663A EP 3275820 B1 EP3275820 B1 EP 3275820B1
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EP
European Patent Office
Prior art keywords
material web
transfer roller
vacuum transfer
roller
sub
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
EP16001663.0A
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German (de)
English (en)
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EP3275820A1 (fr
Inventor
Andreas Signore
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.)
Harro Hofliger Verpackungsmaschinen GmbH
Original Assignee
Harro Hofliger Verpackungsmaschinen GmbH
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 Harro Hofliger Verpackungsmaschinen GmbH filed Critical Harro Hofliger Verpackungsmaschinen GmbH
Priority to EP16001663.0A priority Critical patent/EP3275820B1/fr
Publication of EP3275820A1 publication Critical patent/EP3275820A1/fr
Application granted granted Critical
Publication of EP3275820B1 publication Critical patent/EP3275820B1/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
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/04—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators
    • B65H35/08—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators from or with revolving, e.g. cylinder, cutters or perforators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
    • B26D1/34—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
    • B26D1/40—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a rotary member
    • B26D1/405—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a rotary member for thin material, e.g. for sheets, strips or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/01—Means for holding or positioning work
    • B26D7/018—Holding the work by suction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means
    • B65H2406/33—Rotary suction means, e.g. roller, cylinder or drum

Definitions

  • the invention relates to a device by means of which a material web can be cut into partial sections.
  • a process may be necessary in web processing processes, for example to separate the finished products.
  • the material web can be a single-layer or a multi-layer material and can be present, for example, wound on a roll body.
  • the material web can be drawn off from this roll body and processed in a clocked or continuously running working process.
  • Such web processing processes are used, for example, in the manufacture of wound plasters or other therapeutic plasters, but also in the manufacture of other products built up in layers.
  • the one from the DE 20 2015 008 522 U1 known device can be used.
  • the device disclosed there has a vacuum cutting cylinder and a counter cylinder, by means of which the partial areas can be punched out of the material web.
  • a vacuum transfer roller is available, by means of which the partial areas can be removed from the vacuum cutting cylinder and placed on a conveyor belt.
  • edge areas regularly remain, which are generated as waste.
  • a cutting process is preferred which divides the material web into the desired product size transverse to its longitudinal direction.
  • Such a cutting process in which the material web is cut transversely to its longitudinal direction, is carried out regularly by means of a device which has a cutting unit, in particular a knife roller which can be driven in rotation.
  • a knife roller which can be driven in rotation.
  • the knife roller interacts with a counter roller, which can be designed as a vacuum roller, so that the cut partial sections of the material web can be transported further through the vacuum roller.
  • the sections can then be deposited by the vacuum roller on a conveyor belt or on another material web.
  • Such cutting machines are for example from the US 2014/0352882 A1 or the US 2002/0050324 A1 known.
  • the vacuum roller is usually equipped with a screen jacket that has a regular perforation pattern.
  • the material web can only be cut in the area of the screen jacket in which there are no holes.
  • the individual holes are therefore arranged in rows in the screen jacket.
  • the diameter of the individual holes is usually two millimeters.
  • the width of the web between two rows of holes can vary in principle, but is usually at least three millimeters.
  • the object of the invention was to provide an improved device for cutting a material web into partial sections, in which an as simple as possible change between different lengths of the partial sections is possible.
  • the invention was based on the object of specifying a corresponding method by means of which a material web can be cut into partial sections.
  • the device according to the invention has a cutting unit, a vacuum transfer roller and at least one preferred unit.
  • the web of material is moved towards the cutting unit by the preferred unit.
  • the vacuum transfer roller is rotatably driven by a first motor drive
  • the preferred unit is rotatably driven by a second motor drive.
  • the two motor drives can be driven independently of one another, so that the vacuum transfer roller and the material web can move relative to one another at different speeds.
  • the material web could be moved forward in a clocked manner, since a clocked preference of the material web was necessary in previous web processing processes.
  • the vacuum roller could move continuously, so that the further web processing processes could be carried out in a continuous process.
  • the rotational speed of the vacuum transfer roller can preferably be set greater than the web speed in the region of the preferred unit.
  • the vacuum transfer roller can thus at least temporarily spin under the material web if the material web has not yet been cut. Only after the cutting process does the cut section stick to the vacuum transfer roller and is transported accordingly. Due to the higher speed of rotation of the vacuum transfer roller compared to the web speed, the individual successive sections on the vacuum transfer roller can already have a certain mutual distance and can thus be spread out a bit. This can have advantages with respect to the transfer of the sections to another conveyor belt or to a further material web.
  • the rotational speed of the vacuum transfer roller can be adjusted so that it changes during one revolution of the vacuum transfer roller.
  • the speed of rotation of the vacuum transfer roller therefore does not have to be constant.
  • the speed of rotation of the vacuum transfer roller can decrease immediately after the transfer of a section to a conveyor belt.
  • the rotation speed can then increase again so that the rotation speed of the vacuum transfer roller is adapted to the web speed of the conveyor belt and the transfer of the section can take place.
  • the speed of rotation can be reduced again. In this way, the distance between two successive sections can be increased when transferring to a conveyor belt or another material web.
  • the vacuum transfer roller can be rotated clockwise and counterclockwise.
  • the vacuum transfer roller can thus perform one or more oscillating movements during one revolution. As a result, the distance between two subsequent sections can be increased further.
  • the subsections can be, for example, the therapeutically effective pillow that is to be applied to an adhesive material layer.
  • the adhesive material layer is separated between two pillows in a later processing step, the adhesive material layer being intended to form a sufficiently large edge around the pillow so that this pillow can be fully adhered to the skin as a plaster.
  • this material web is regularly cut into sections without any spacing. The sections must then be brought to a predetermined mutual distance. This is possible with the device according to the invention without additional method steps with further rearrangements of the individual sections.
  • the sections are already at a certain mutual distance during transport on the vacuum transfer roller.
  • the partial sections can be spread out during the transfer to the conveyor belt or the further material web.
  • the rotational movement of the vacuum transfer roller can be set to the desired process.
  • the device can be adapted to whether a continuous or a timed procedure is desired. In this way, a transition from a clocked to a continuous process or vice versa from a continuous process to a clocked process may also be possible.
  • the motor drive of the vacuum transfer roller is the main drive.
  • the other components - in particular the cutting unit and the preferred unit - must then adapt to the movement of the vacuum transfer roller.
  • the cutting unit can be driven by means of a third motor drive.
  • This third motor drive can be driven independently of the first and the second motor drive.
  • the cutting unit could be designed as a linearly movable knife unit.
  • the cutting unit can be designed as a knife roller.
  • the knife roller can be equipped with several knife units.
  • the rotational speed of the knife roller can also be freely selected by the third motor drive, so that sections of any size or small can be realized.
  • the preferred unit can have two transport rollers, between which the material web runs.
  • the transport rollers can serve for a safe and gentle advance of the material web.
  • the transport rollers fix the material web between them so tightly that it is possible for the vacuum roller to spin under the free end of the material web.
  • the device 10 according to the invention for cutting a material web 12 into sections 14, 14 ' is shown in FIGS 1 to 3 shown schematically.
  • the device 10 has a vacuum transfer roller 20, a preferred unit 22 and a knife roller 24.
  • the vacuum transfer roller 20 is rotatably mounted about an axis of rotation 30. In the present example, the rotation of the vacuum transfer roller 20 takes place exclusively in the counterclockwise direction.
  • the rotation of the vacuum transfer roller 20 is controlled by a first motor drive, not shown here.
  • the preferred unit 22 has an upper transport roller 40 and a lower transport roller 42. The material web 12 runs between these two transport rollers 40, 42 Material web 12 is moved by the preferred unit 22 in the transport direction 44 to the vacuum transfer roller 20.
  • the two transport rollers 40, 42 of the preferred unit 22 are driven by a second motor drive, not shown here.
  • the knife roller 24 is rotatably mounted about an axis of rotation 50. In the present example, the rotation of the knife roller 24 is clockwise. In the present example, the knife roller 24 is equipped with four knife units 52. The rotation of the knife roller 24 is controlled by a third motor drive, not shown here.
  • the knife roller 24 rotates at a constant rotational speed R1 and the vacuum transfer roller 20 at a constant rotational speed R2.
  • the web speed of the material web 12 is B1.
  • the rotational speed R1, together with the web speed B1, determines the length of the individual sections 14, 14 '.
  • the rotational speed R2 of the vacuum transfer roller 20 is somewhat greater than the web speed B1 of the material web 12.
  • the vacuum transfer roller 20 can thereby rotate under the end region of the material web 12 which has not yet been cut off.
  • the material web 12 is transported by the preferred unit 22, but is also held in such a way that the material web 12 is not carried away by the faster rotating vacuum transfer roller.
  • this section 14 is no longer held by the preferred unit 22 and is therefore transported further faster by the vacuum transfer roller 20. Due to the higher speed R2 of the vacuum transfer roller 20, a distance 60 is therefore generated between two subsequent sections 14, 14 '.
  • the speed R2 of the vacuum transfer roller 20 is according to Fig. 1 the same as the web speed B2 of a second material web 62. The individual sections 14, 14 'are therefore placed at a distance 62 on this second material web 62.
  • the individual sections 14, 14 ' are arranged on the vacuum transfer roller 20 in abutment, that is to say without a mutual distance. Still a distance 70 between two sections 14, 14 ', the rotational speed R1 of the vacuum transfer roller 20 during the transfer of a section 14 to the second material web 62 can be as large as the web speed B2 of this second material web 62. This is necessary in order to ensure an exact transfer of the sections 14, 14 '.
  • the vacuum transfer roller 20 can stop its rotation until the desired distance 70 between the already transferred section 14 and the subsequent section 14 'is reached. In this case, the drives of the preferred unit 22 and possibly also the knife roller 24 must adapt to the vacuum transfer roller 20. Depending on the desired distance 70 between the sections 14, 14 ', it may also be necessary to allow the vacuum transfer roller 20 to rotate a little in the opposite direction, that is to say clockwise.
  • the rotational speed R2 of the vacuum transfer roller 20 can at least at times be faster than the web speed B1 of the material web 12, so that the individual sections 14, 14 ′ separated from the material web 12 are transported on the vacuum transfer roller 20 at a mutual distance 60.
  • the speed R2 of the vacuum transfer roller 20 can be briefly reduced after the transfer of a partial section 14 to the second material web 62, so that this distance 60 increases further and the partial sections 14, 14 'are placed on the second material web 62 at a mutual distance 72 become.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Advancing Webs (AREA)

Claims (8)

  1. Dispositif (10) pour couper une bande de matériau (12) en sections (14, 14'),
    - comprenant une unité de coupe (24),
    - comprenant un cylindre de transfert sous vide (20), qui peut être entraîné en rotation au moyen d'un premier entraînement motorisé,
    - comprenant au moins une unité d'avancement (22), à l'aide de laquelle la bande de matériau (12) peut être déplacée sur l'unité de coupe (24) et qui peut être entraînée au moyen d'un deuxième entraînement motorisé,
    - les deux entraînements motorisés pouvant être entraînés indépendamment l'un de l'autre,
    - caractérisé en ce que
    - la vitesse de rotation (R2) du cylindre de transfert sous vide (20) peut être ajustée de manière modifiable pendant une révolution du cylindre de transfert sous vide (20).
  2. Dispositif selon la revendication 1,
    - caractérisé en ce que
    - le cylindre de transfert sous vide (20) peut être mis en rotation dans le sens horaire et dans le sens antihoraire.
  3. Dispositif selon la revendication 1 ou 2,
    - caractérisé en ce que
    - l'unité de coupe (24) peut être entraînée de manière motorisée au moyen d'un troisième entraînement motorisé,
    - le troisième entraînement motorisé peut être entraîné indépendamment du premier et du deuxième entraînement motorisé.
  4. Dispositif selon l'une quelconque des revendications précédentes,
    - caractérisé en ce que
    - l'unité de coupe est configurée sous la forme d'un cylindre à lames (24).
  5. Dispositif selon la revendication 4,
    - caractérisé en ce que
    - le cylindre à lames (24) est équipé de plusieurs unités de lame (52).
  6. Dispositif selon l'une quelconque des revendications précédentes,
    - caractérisé en ce que
    - l'unité d'avancement (22) comprend deux cylindres de transport (40, 42),
    - la bande de matériau (12) se déplace entre les deux cylindres de transport (40, 42).
  7. Procédé pour couper une bande de matériau (12) en sections (14, 14') comprenant les étapes de procédé suivantes :
    - la bande de matériau (12) est acheminée au moyen d'une unité d'avancement (22) entre une unité de coupe (24) et un cylindre de transfert sous vide (20) configuré en tant que contre-cylindre, et coupée en sections individuelles (14, 14'),
    - les sections individuelles (14, 14') sont transportées ultérieurement par le cylindre de transfert sous vide (20) et déposées sur une courroie de transport ou sur une bande de matériau supplémentaire (62),
    - la vitesse de rotation (R2) du cylindre de transfert sous vide (20) étant au moins temporairement supérieure à la vitesse de bande (B1) de la bande de matériau (12) encore non divisée en sections (14, 14'), de telle sorte qu'un écart (60) se forme entre une section respective (14) et la bande de matériau encore non divisée (12),
    - caractérisé en ce que
    - la vitesse de rotation (R2) du cylindre de transfert sous vide (20) au moins après la transmission d'une section respective (14) sur la courroie de transport ou la bande de matériau supplémentaire (62) est inférieure à directement avant la transmission de la section correspondante (14).
  8. Procédé pour couper une bande de matériau (12) en sections (14, 14') comprenant les étapes de procédé suivantes :
    - la bande de matériau (12) est acheminée au moyen d'une unité d'avancement (22) entre une unité de coupe (24) et un cylindre de transfert sous vide (20) configuré en tant que contre-cylindre, et coupée en sections individuelles (14, 14'),
    - les sections individuelles (14, 14') sont transportées ultérieurement par le cylindre de transfert sous vide (20) et déposées sur une courroie de transport ou sur une bande de matériau supplémentaire (62),
    - caractérisé en ce que
    - la vitesse de rotation (R2) du cylindre de transfert sous vide (20) est au moins après la transmission d'une section respective (14) sur la courroie de transport ou la bande de matériau supplémentaire (62) inférieure à directement avant la transmission de la section correspondante (14).
EP16001663.0A 2016-07-28 2016-07-28 Dispositif de coupe d'une bande de materiau en tronçons Active EP3275820B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16001663.0A EP3275820B1 (fr) 2016-07-28 2016-07-28 Dispositif de coupe d'une bande de materiau en tronçons

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16001663.0A EP3275820B1 (fr) 2016-07-28 2016-07-28 Dispositif de coupe d'une bande de materiau en tronçons

Publications (2)

Publication Number Publication Date
EP3275820A1 EP3275820A1 (fr) 2018-01-31
EP3275820B1 true EP3275820B1 (fr) 2020-07-01

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Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4238386C1 (de) * 1992-11-13 1994-05-05 Heidelberger Druckmasch Ag Einrichtung zum Querschneiden kontinuierlich zugeführten Materials
US6893528B2 (en) * 2000-11-01 2005-05-17 Adalis Corporation Web material advance system for web material applicator
US20040007328A1 (en) * 2002-07-15 2004-01-15 Kimberly-Clark Worldwide, Inc. Apparatus for cutting and placing limp pieces of material
ITMI20080245A1 (it) * 2008-02-15 2009-08-16 Tocchio S R L Dispositivo di taglio trasversale di materiali in nastro
US9731489B2 (en) * 2013-05-29 2017-08-15 H.B. Fuller Company Material application system
DE202015008522U1 (de) 2015-12-14 2016-01-19 Harro Höfliger Verpackungsmaschinen GmbH Vorrichtung zum Herauslösen von Teilbereichen aus einer Materialbahn

Non-Patent Citations (1)

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

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