EP1988042B1 - Dispositif et méthode de pliage d'une bande de materiau - Google Patents

Dispositif et méthode de pliage d'une bande de materiau Download PDF

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Publication number
EP1988042B1
EP1988042B1 EP07008856A EP07008856A EP1988042B1 EP 1988042 B1 EP1988042 B1 EP 1988042B1 EP 07008856 A EP07008856 A EP 07008856A EP 07008856 A EP07008856 A EP 07008856A EP 1988042 B1 EP1988042 B1 EP 1988042B1
Authority
EP
European Patent Office
Prior art keywords
folding
material web
web
sections
knife set
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.)
Not-in-force
Application number
EP07008856A
Other languages
German (de)
English (en)
Other versions
EP1988042A1 (fr
Inventor
Rüdiger Storre
Peter Gerhard
Peter Thurner
Urban Stollberg
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.)
Sim Automation GmbH and Co KG
Original Assignee
Ft Automation & Co KG 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 Ft Automation & Co KG GmbH filed Critical Ft Automation & Co KG GmbH
Priority to DE502007003468T priority Critical patent/DE502007003468D1/de
Priority to EP07008856A priority patent/EP1988042B1/fr
Priority to AT07008856T priority patent/ATE464262T1/de
Publication of EP1988042A1 publication Critical patent/EP1988042A1/fr
Application granted granted Critical
Publication of EP1988042B1 publication Critical patent/EP1988042B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B65H45/00—Folding thin material
    • B65H45/02—Folding limp material without application of pressure to define or form crease lines
    • B65H45/06—Folding webs
    • B65H45/10—Folding webs transversely
    • B65H45/101—Folding webs transversely in combination with laying, i.e. forming a zig-zag pile
    • B65H45/1015—Folding webs provided with predefined fold lines; Refolding prefolded webs, e.g. fanfolded continuous forms
    • 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
    • B65H2701/11—Dimensional aspect of article or web
    • B65H2701/112—Section geometry
    • B65H2701/1123—Folded article or web
    • B65H2701/11231—Fan-folded material or zig-zag or leporello

Definitions

  • the invention relates to a method for folding a material web, wherein sections of the material web are placed by opposing folding knife in a zigzag shape.
  • the invention also relates to a device for folding a material web in a zigzag shape with an opposite, folding blade having folding device.
  • the material web can be formed, in particular, from a carrier layer of paper, essentially flat packaging pieces laid on the carrier layer and a film cover layer, the cover layer being connected to the carrier layer around the packaging pieces.
  • the material web is laid in a zigzag form, wherein usually sections with one packing piece, for example a filter paper for laboratory analytical purposes, should be separable.
  • a method and a device with the features described above are known from the document DE 10 2004 025 501 A1 known.
  • a material web for example a textile fabric for an air filter
  • a material web is supplied continuously and laid by rotational and translational movements of two arranged on opposite sides of the web folding blades in a zigzag shape and moved into a heated folding channel, wherein the folding edges are fixed by heat .
  • the disadvantage is that the material web is exposed in the folding large mechanical and thermal loads. The processing of webs with a low strength is not possible.
  • the invention has for its object to provide a method for folding a web, in which the web is exposed to a low load.
  • a precise folding of a stiff, multi-layer material web is to be made possible.
  • the object is achieved in that the material web is intermittently held on a front in the running direction section, several subsequent sections are brought by a first knife set and an opposite second knife set in a zigzag shape, wherein the aligned portions subsequently be pushed together.
  • the first and the second set of blades are each formed from a plurality of folding blades, typically arranged at the same distance. Due to the cyclic movements of the folding knife of the first and the second set of knives always exactly reproducible folding of the sections is possible, whereby the load of the material web is limited. Since the sections are guided by the folding blades in the folding, also an exact folding of a stiff material web is made possible.
  • a predetermined number of sections is placed in a zigzag shape, wherein the individual sections be aligned successively from the front in the running direction portion of the web.
  • the number of knives equals the number of folded sections. Sharp bending and increased stress only occurs when a fold is formed between two sections. The position of the folds is precisely determined by the distance between two adjacent counteracting folding knives in the delivered state.
  • the material web can be guided over a web memory, which can be temporarily stored and then temporarily output a certain length of the material web.
  • a web of material can be supplied, which is provided at the transition areas between their sections with perforations, weakenings, for example in the form of a groove, or fold lines.
  • the areas at which the sections adjoin one another are provided, prior to folding, with fold lines extending transversely to the web longitudinal direction, which are formed in such a way that the material web is prefolded alternately according to the later zigzag shape.
  • control of the web run can in the context of the invention, for example, by printed on the web rapport marks or repeat punching take place, these are preferably detected optically, with a light barrier, a digital camera or the like.
  • After folding it is also possible to provide further processing, for example cutting to length and packaging of packages of the material web, each of which is formed from a plurality of sections.
  • the invention also provides a device for folding a material web in a zigzag form, which is particularly suitable for carrying out the method described above.
  • the device has a folding device, wherein according to the invention it is provided that the folding device operates in cycles and has a holding knife for fixing a front section of the material web in the running direction, a first and an opposite second knife set and a slide for the cyclic output of the folded sections.
  • the folding blades are typically arranged substantially perpendicular to the running direction of the material web at an equal distance and deliverable for aligning the sections perpendicular to the material web.
  • the knife sets each have a plurality of folding blades, but with increasing number of folding blades, the manufacturing costs and the control effort of the folding device increase.
  • the sets of knives for example, each have between 3 and 12, preferably between 5 and 8 folding knife.
  • the folding knives of the first set of knives can be arranged on a common carrier and the folding knives of the second set of knives can be delivered linearly independently of one another, wherein typically the folding knives of the first set of knives can be delivered jointly via the carrier.
  • both the folding knife the first and the second set of knives are individually deliverable.
  • the carrier of the first set of knives, the folding knives of the second set of knives the holding knife and / or the slide hydraulically or are pneumatically driven.
  • Such a drive allows particularly fast switching and delivery times, whereby a simple control by electronically controllable valves is possible and whereby a particularly simple and space-saving construction of the folding device is made possible.
  • the device is designed such that the folding device is a folding station upstream for folding and pre-folding of the material web.
  • the upstream folding station on a support plate, extending in the web longitudinal direction web guide and two oppositely acting, arranged transversely to the web guide folding units, the folding units each having a clamping device with at least one jaw and a sword, with the fold areas of the web to form a loop in a gap of the clamping device are insertable, and wherein the jaw is movable to produce fold lines of the material web.
  • the gap may for example be formed between the jaw and an associated stop surface of the carrier plate or between two jaws.
  • the folding areas of the material web are moved out of the web plane in the folding station to form a loop and provided with a fold line. Since the jaw act laterally on the introduced into the gap of the clamping device loop during a closing movement, a strong strain and consequent damage to the material web can be prevented, whereby rigid, multi-layer webs can be prefolded by the arrangement of the fold line.
  • the folding stations can have an ejection element, such as an ejector blade. Upon the opening of the at least one jaw, the ejector blade is then moved into the opening gap to push the folding area out of the clamping device.
  • a web memory is preferably arranged in front of and / or behind the folding station.
  • servo drives with a residual path optimization can be provided.
  • the moving parts of the folding station can be driven hydraulically or pneumatically.
  • the described folding station can achieve clock rates for producing the fold line of more than 25 cycles per minute, preferably more than 40 cycles per minute.
  • the entire device can also have a cutting blade for cutting material web packages.
  • Fig. 1 shows a device for folding a material web 1 in a zigzag shape.
  • the apparatus comprises a station 2 for generating lines of weakness, a folding station 3 for prefolding the material web 1, web stores 4 formed as register roll arrangements, roller feeds 5 for advancing the material web 1, a folding device 6 for aligning sections 7 of the material web 1, a separation station 8 Cutting to length packages 9, each having a plurality of sections 7 of the web 1 and a rotary table 10 for temporarily storing the packages 9 before packaging.
  • the unfolded material web 1 is in the Fig. 2a and consists of a carrier layer 11, placed on the carrier layer 11 filter papers 12 and a cover layer 13 of a polyethylene film, which is connected to the filter papers 12 around with the carrier layer 11 made of paper.
  • the material web 1 is to be folded between the individual filter papers 12, so that sections 7 can be separated, each with a filter paper 12b.
  • the carrier layer 11 has a thickness of about 80 microns and the polyethylene film of the cover layer 13 has a thickness of about 50 microns.
  • the width of the material web 1 is 80 mm and the length of the sections to be folded 7 75 mm.
  • the material web 1 is comparatively stiff in these areas and thus difficult to fold.
  • the filter papers 12 may be determined, for example, for laboratory analytical purposes, which is why in the folding process, the carrier layer 11 and the cover layer 13 may not be damaged, otherwise contamination may occur and a sterility of the filter papers 12 is no longer guaranteed.
  • To control the web run to be folded sections 7 are each provided with repeat punching 14, which are optically detected.
  • Fig. 2b shows a package 9 of several zig-zag folded sections 7 of the web 1, which can be supplied, for example in a dispenser to a user.
  • the material web 1 first passes through the station 2 to produce a line of weakness.
  • the weakening line can be formed, for example, in the manner of a perforation, but the carrier layer 11 and / or the cover layer 13 are only partially scored or scored and not cut, as is usual in a perforation.
  • the material web 1 is then guided over a first roll feed 5 and a first web store 4 for pre-folding in a folding station 3.
  • the folding station 3 has a carrier plate 16, a running in the web longitudinal direction web guide 17 and two oppositely acting, arranged transversely to the web guide 17 folding units 18.
  • the staggered in the web longitudinal direction folding units 18 each comprise a clamping device 19 with a jaw 20 and a sword 21, with a folded portion 22 of the web 1 to form a loop in a formed between the jaw 20 and a stop surface 24 of the support plate 16 gap 25 inserted are, wherein the clamping jaw 20 is then supplied to generate fold lines of the material web 1 by a closing action of the clamping device 19 in the direction of the loop formed.
  • the propulsion of the material web 1 and the mutual generation of fold lines in the fold areas 22 takes place cyclically with a clock rate of up to 40 cycles per minute or more. Since the fold regions 22 are moved out of the web plane to produce the fold lines to form a loop, a length compensation is required which is made possible by the upstream web store 4.
  • the swords 21 and the column 25 are arranged perpendicular to the running direction of the material web 1. Since in the folding, the clamping jaw 20 of the clamping device 19 acts laterally on the inserted from the blade 21 web 1, only relatively low loads on the material web 1, so that the carrier layer 11 and the cover layer 13 are not severed in the formation of the fold line. In order to avoid a large tensile load during further transport of the material web 1, an ejector blade 26 is provided as an ejection element 26, which pushes out the folding region 22 of the material web 1 from the opening gap 25 after opening the clamping device.
  • the mutually prefolded material web 1 is guided via a further roller feed 5 as a drive unit and a further web memory 4 to a cyclically operating folding device 6.
  • the folding device 6 has a holding knife 27 for fixing a front section 7 of the material web in the running direction, a first and an opposite second knife set 28a, 28b and a slide 29 for the cyclic output the folded portions 7 on.
  • the folding blades 30a, 30b are arranged perpendicular to the direction of movement of the material web 1 at an equal distance.
  • the folding blades 30a of the first blade set 28a are fastened to a common carrier 31, wherein the folding blades 30b of the second blade set 28b are independently linearly deliverable.
  • the carrier 31 of the first blade set 28a, the folding blade 30b of the second blade set 28b, the retaining blade 27 and the slider 29 are hydraulically or pneumatically driven, the associated drive units in Fig. 5 can be seen.
  • the folding of the material web 1 is preferably carried out by successively aligning the sections 7 in the folding device 6 starting from the front section 7 of the material web in the running direction.
  • Fig. 4a shows the already aligned by linear feed movements of the folding blades 31a, 31 b sections 7 before they are pushed together after a retraction of the folding blades 31a, 31b of the slider 29 and output after a retraction of the holding knife 27.
  • the second web memory 4 can temporarily store a corresponding length of the material web 1 and deliver it at short notice.
  • the roller feeds 5 can be equipped with an optical device for detecting the repeat punching 14 of the material web 1, wherein the roller feeds 5 are preferably designed as servo drives with a residual path optimization.
  • Fig. 4b shows an alternative embodiment of the folding device 6, in which both the folding blade 30a of the first blade set 28a and the folding blade 30b of the second blade set 28b are individually deliverable.
  • the alignment of the sections 7 of the material web 1 takes place starting from the front section 7 in the direction of travel in that alternately individual folding blades 30a, 30b of the first and second knife set 28a, 28b are delivered.
  • the fact that all folding blades 28a, 28b are deliverable individually, the load on the material web 1 is reduced to a minimum, so that even very sensitive, constructed of different layers webs of material 1 can be processed.
  • Twelve sections 7 of the material web 1 are aligned in one stroke of the folding device 6, wherein the first blade set 28a and the second blade set 28b each have six folding blades 30a, 30b.
  • the material web 1 can be folded precisely at the stiff regions between the individual filter papers 12, without the carrier layer 11 or the cover layer 13 being damaged.
  • packets 9 with 108 sections 7 can be generated in a time of about 90 seconds.

Landscapes

  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Claims (15)

  1. Procédé de pliage d'une bande de matériau (1), des sections (7) de la bande de matériau (1) étant déposées en forme de zigzag par des lames de pliage opposées (30a, 30b) et les sections alignées (7) étant successivement regroupées, caractérisé en ce que la bande de matériau (1) est maintenue cycliquement au niveau d'une section (7) antérieure dans le sens de circulation, plusieurs sections (7) étant amenées en forme de zigzag dans un cycle par un premier jeu de lames (28a) et un deuxième jeu de lames opposé (28b) et les sections individuelles (7) étant alignées les unes derrière les autres en partant de la section (7) antérieure dans le sens de circulation de la bande de matériau (1).
  2. Procédé selon la revendication 1, caractérisé en ce que la bande de matériau (1) passe directement avant le pliage cyclique dans une réserve de bande (4).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que les zones où les sections (7) se raccordent entre elles sont pourvues avant leur pliage de lignes de pliage s'étendant transversalement à la bande de matériau (1), les lignes de pliage étant constituées de manière à ce que la bande de matériau (1), pour faciliter le pliage consécutif, soit pré-pliée au choix dans un premier et un deuxième sens opposé.
  4. Procédé selon une des revendications 1 à 3, caractérisé en ce que la course de la bande est contrôlée à partir de marques de repérage ou de perforations de repérage (14) de la bande de matériau (1).
  5. Procédé selon une des revendications 1 à 4, caractérisé en ce que, après le pliage, des paquets (9) comprenant des sections pliées les unes sur les autres (7) de bande de matériau (1) sont sectionnés.
  6. Dispositif de pliage d'une bande de matériau (1) en forme de zigzag à l'aide d'un dispositif de pliage (6) fonctionnant cycliquement et présentant une lame de retenue (27) pour la fixation d'une section (7) antérieure dans le sens de circulation d'une bande de matériau (1) et comportant un curseur (29) pour la distribution cyclique des sections pliées (7), caractérisé en ce que le dispositif de pliage (6) présente un premier et un deuxième jeu de lames opposé (28a, 28b), le premier et le deuxième jeu de lames (28a, 28b) comprenant respectivement plusieurs lames de pliage (30a, 30b) qui peuvent être approchés sensiblement à la verticale et individuellement de la bande de matériau (1) et guident les sections (7) de la bande de matériau (1).
  7. Dispositif selon la revendication 6, caractérisé en ce que les lames de pliage (30a) du premier jeu de lames (28a) sont disposées sur un support commun (31) et que les lames de pliage (30b) du deuxième jeu de lames (28b) peuvent être approchées linéairement indépendamment les unes des autres.
  8. Dispositif selon la revendication 6, caractérisé en ce que les lames de pliage (30a) du premier jeu de lames (28a) et les lames de pliage (30b) du deuxième jeu de lames (28b) peuvent respectivement être approchées linéairement indépendamment les unes des autres.
  9. Dispositif selon la revendication 7 ou 8, caractérisé en ce que le support (31) du premier jeu de lames (28a) ou les lames de pliage individuelles (30a) du premier jeu de lames (28a), les lames de plage (30b) du deuxième jeu de lames (28b), la lame de retenue (27) et/ou le curseur (29) sont entraînés par système hydraulique ou pneumatique.
  10. Dispositif selon une des revendications 6 à 9, caractérisé en ce que les premier et deuxième jeux de lames (28a, 28b) présentent respectivement entre 3 et 10, de préférence entre 5 et 8 lames de pliage (30a, 30b).
  11. Dispositif selon une des revendications 6 à 10, caractérisé en ce que la cadence du dispositif de pliage (6) est supérieure à 3 cycles par minute, de préférence supérieure à 5 cycles par minutes.
  12. Dispositif selon une des revendications 6 à 11, caractérisé en ce qu'en amont du dispositif de pliage (6) est installée une station de pliage (3) pour le pliage et le pré-pliage de la bande de matériau (1).
  13. Dispositif selon la revendication 12, caractérisé en ce que la station de pliage (3) présente une plaque support (16), un guide de bande (17) s'étendant dans le sens longitudinal de la bande et deux unités de pliage (18) agissant en sens inverse et disposées transversalement au guide de bande (17), les unités de pliage (18) présentant respectivement un dispositif de serrage (19) comportant au moins une mâchoire de serrage (20) et une pointe (21) grâce à laquelle des zones de pliage (22) de la bande de matériau (1) peuvent être introduites dans une fente (25) du dispositif de serrage (19) et la mâchoire de serrage (20) pouvant être déplacée pour créer les lignes de pliage de la bande de matériau (1).
  14. Dispositif selon une des revendications 6 à 13, caractérisé en ce qu'au moins une réserve de bande (4) et au moins une unité d'avancement sont prévues.
  15. Dispositif selon une des revendications 6 à 14, caractérisé en ce qu'une station de coupe (8) est prévue pour sectionner les paquets (9) de bande de matériau (1).
EP07008856A 2007-05-02 2007-05-02 Dispositif et méthode de pliage d'une bande de materiau Not-in-force EP1988042B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE502007003468T DE502007003468D1 (de) 2007-05-02 2007-05-02 Verfahren und Vorrichtung zum Falten einer Materialbahn
EP07008856A EP1988042B1 (fr) 2007-05-02 2007-05-02 Dispositif et méthode de pliage d'une bande de materiau
AT07008856T ATE464262T1 (de) 2007-05-02 2007-05-02 Verfahren und vorrichtung zum falten einer materialbahn

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07008856A EP1988042B1 (fr) 2007-05-02 2007-05-02 Dispositif et méthode de pliage d'une bande de materiau

Publications (2)

Publication Number Publication Date
EP1988042A1 EP1988042A1 (fr) 2008-11-05
EP1988042B1 true EP1988042B1 (fr) 2010-04-14

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP07008856A Not-in-force EP1988042B1 (fr) 2007-05-02 2007-05-02 Dispositif et méthode de pliage d'une bande de materiau

Country Status (3)

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EP (1) EP1988042B1 (fr)
AT (1) ATE464262T1 (fr)
DE (1) DE502007003468D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013128459A1 (fr) * 2012-03-01 2013-09-06 2P2D Solutions Ltd. Chaîne blister repliée, machine de pliage et procédé de pliage
CN110202832B (zh) * 2019-06-13 2020-12-11 安徽世品佳工业产品设计有限公司 一种夹持推折机构
CN112875405A (zh) * 2019-11-30 2021-06-01 广东利元亨智能装备股份有限公司 一种折叠装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4218962A (en) * 1978-07-03 1980-08-26 Johns-Manville Corporation Apparatus for forming thermal insulation blocks
DE8534260U1 (de) * 1985-12-05 1986-02-13 Polytex AG, Glattbrugg Vorrichtung zum Zick-Zack-Falten
FR2614883B1 (fr) * 1987-05-04 1991-09-06 Duribreux Jean Baptiste Procede, dispositif et installation de pliage d'une piece textile rectangulaire
DE9412210U1 (de) * 1994-07-28 1994-12-01 Schäfer, Hermann, 35116 Hatzfeld Faltvorrichtung
DE102004025501B4 (de) * 2004-05-21 2007-07-05 Karl Rabofsky Gmbh Verfahren zum Herstellen von Stehfalten und Messerfaltmaschine mit Fördereinrichtung

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Publication number Publication date
EP1988042A1 (fr) 2008-11-05
ATE464262T1 (de) 2010-04-15
DE502007003468D1 (de) 2010-05-27

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