EP0322645B1 - Machine de dèpose en couches - Google Patents

Machine de dèpose en couches Download PDF

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Publication number
EP0322645B1
EP0322645B1 EP88120886A EP88120886A EP0322645B1 EP 0322645 B1 EP0322645 B1 EP 0322645B1 EP 88120886 A EP88120886 A EP 88120886A EP 88120886 A EP88120886 A EP 88120886A EP 0322645 B1 EP0322645 B1 EP 0322645B1
Authority
EP
European Patent Office
Prior art keywords
curve
laying machine
cloth
cloth web
laying
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.)
Expired - Lifetime
Application number
EP88120886A
Other languages
German (de)
English (en)
Other versions
EP0322645A2 (fr
EP0322645A3 (en
Inventor
Rolf Jung
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.)
Krauss und Reichert GmbH and Co KG
Original Assignee
Krauss und Reichert GmbH and Co KG
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 Krauss und Reichert GmbH and Co KG filed Critical Krauss und Reichert GmbH and Co KG
Publication of EP0322645A2 publication Critical patent/EP0322645A2/fr
Publication of EP0322645A3 publication Critical patent/EP0322645A3/de
Application granted granted Critical
Publication of EP0322645B1 publication Critical patent/EP0322645B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65H45/103—Folding webs transversely in combination with laying, i.e. forming a zig-zag pile by a carriage which reciprocates above the laying station
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S493/00—Manufacturing container or tube from paper; or other manufacturing from a sheet or web
    • Y10S493/937—Textile

Definitions

  • the invention relates to a laying machine for laying out a fabric web with a fabric web guide pulling the fabric web from a fabric roll and laying out as a fabric layer, comprising a fabric presetting device presenting the fabric web according to the laying machine speed, and with a tension relief control, which a fabric web loop formed in the course of the web guidance with regard to its deviations from a normal size with at least one non-contact scanning barrier.
  • Such a laying machine is known from DE-OS 29 22 930.
  • a U-shaped, freely sagging fabric web loop is provided in front of the material specification device, the extent of which can be detected in the direction of fall by two light barriers, which serve as a contactless scanning barrier and are directed parallel to a tangent in the lowest point of the U-shaped loop.
  • Such a strain relief control allows the fabric web to be fed to the presetting device free of tensions lying in the longitudinal direction, but it has the disadvantage that a slip occurring in the area of the fabric presetting device cannot be detected and therefore tensions in the area of the web guiding between the fabric presetting device and the laid out position can occur in the longitudinal direction of the fabric web in that due to the not exactly controllable If there is a slip in the area of the fabric specification device, the fabric web cannot be presented at a speed that exactly matches the speed of the laying carriage.
  • the fabric web should be able to be threaded as automatically as possible.
  • the formation of a free-hanging fabric web loop leads to difficulties, since its formation after threading either involves a shift of the fabric roll itself, e.g. described in DE-OS 29 22 930, or the provision of additional deflecting rollers and also a considerable control effort are required.
  • the invention is therefore based on the object of improving a laying machine of the generic type in such a way that tension-free laying of the fabric web in connection with a solution which is not expensive in terms of apparatus is possible.
  • the solution according to the invention has the advantage, on the one hand, that the fabric loop is now arranged in the area between the specification device and the fabric layer laid out, and thus the strain relief control automatically compensates for the slip occurring in the area of the specification device. Furthermore, the other type of design of the fabric loop, namely that it only represents a bend of the fabric web from the free fall direction, achievable that the loop remains stable despite a non-controlled removal of the fabric web as a fabric web loop and only corresponds to that occurring train deformed in the longitudinal direction of the fabric. A collapse, as might be the case with a known U-shaped sagging fabric loop when the fabric web is not defined, is not possible with the fabric web loop design according to the invention.
  • the invention is thus to be seen in the fact that the different design of the fabric loop, namely in the form of a bend, makes it possible to arrange a freely hanging fabric loop between the fabric specification device and the fabric layer laid out.
  • the solution according to the invention also has the advantage that, with such a design of the fabric web loop, the fabric web can also be automatically threaded, since a deflection of the free-falling fabric web in a direction transverse to the direction of fall can be achieved with simple design or control technology means.
  • This angle is to be understood as the angle which the inner surface of the material web with respect to the bend encloses between itself in the region of a beginning and an end of the bend.
  • the detection of the displacement of the bend required for control is possible in a wide variety of ways. It is easiest if the scanning barrier detects a displacement of the free-hanging bend in a direction transverse to the direction of the fall.
  • a first variant for detecting the displacement of the free-hanging bend provides that the scanning barrier is arranged tangentially to the bend, that is to say that it includes an enlargement or reduction thereof tangentially to the bend.
  • the scanning barrier scans an area with a predetermined width in the direction perpendicular to the surface formed by the fabric web and detects which part of this area is covered by the bend is.
  • a second variant provides that the scanning barrier runs across the entire width of the web and is arranged on one side of the bend with a normal arc length of the bend.
  • This arrangement of the scanning barrier has the great advantage that, on the one hand, it is extremely space-saving, since the scanning barrier now extends essentially across the entire web in the area of the bend and therefore also the components necessary for the scanning barrier are very simple, for example, anyway Have existing side walls installed so that no additional brackets are required.
  • the default device must be controlled so that the bend shifts to the side on which the scanning barrier is arranged, and when the scanning barrier is reached, the strain relief control must then briefly control the default device in the reverse manner, so that the total bending always takes place commutes to the side of the scanning barrier.
  • each scanning barrier runs at an acute angle to the surface formed by the fabric so that the fabric web, which is always displaced parallel to itself, and the scanning barrier form an angle with one another and thus the web crossing the scanning barrier covers a larger detection cross-section of the scanning barrier.
  • the detection cross section of the scanning barrier is completely covered if the angle corresponds at least approximately to an angle determined by the width of the material web and the thickness of the light beam as the catheter.
  • scanning barriers A wide variety of types of contactless scanning barriers are conceivable as scanning barriers, it having proven particularly expedient in a fabric laying machine if the scanning barriers are light barriers.
  • the fabric web guide to form the bend defines a direction running transverse to the direction of fall Has guide element.
  • the most advantageous embodiment in the context of the solution according to the invention provides that an arcuate course of the fabric web in the transition area from the fabric web guide to the laid-out position serves as the bend forming the fabric web loop.
  • This embodiment therefore also uses the arched course of the fabric in the transition area from the fabric guide to the laid out layer, which is inevitably present in all laying machines, in order to enable effective strain relief regulation, since this curved shape of the fabric sheet is arranged directly in front of the laid out layer and thus all Reflects inaccuracies in the speed at which the fabric is fed through the fabric guide.
  • this is Embodiment extremely space-saving, since it does not require space to provide an additional bend either in the laying unit or elsewhere between the default device and the fabric layer laid out.
  • the devices for this purpose preferably being tubes which extend transversely to the width of the material web and have appropriately directed nozzles.
  • FIG. 1 shows an embodiment of a fabric laying machine, with a laying carriage designated as a whole as 10, which is mounted on a laying table 12 so that it can be moved back and forth in the direction of arrow 14.
  • This laying trolley 10 has a fabric web guide, designated as a whole as 16, which pulls a fabric web 20 from a fabric roll 18, leads via deflection rollers 22, 24, 26 and 28 to a pre-setting roller 30, from which it feeds to a laying unit 32 and, after passing through it, as Lay out the fabric layer 34 on the laying table 12 in the form of a layer package 36.
  • the specification roller 30 is driven in dependence on the speed of the laying carriage 10 in the direction of the arrow 14 in such a way that the fabric web 20 is designed as tension-free as the fabric layer 34.
  • the laying unit 32 is constructed, for example, in such a way that the fabric web 20 falls freely through it up to the fabric layer 34.
  • the laying unit 32 has a fabric web guide 38, comprising two funnel-shaped constricting baffles 40 and 42, through which the fabric web is guided between two guide tubes 44 and 46, which are arranged at a distance below the fabric web guide 38 and serve as a laying edge, from where the fabric web then passes into the fabric layer 34 in the form of a bend 48.
  • a free space 50 remains between the guide tubes 44, 46 and the fabric web guide arranged above it, into which a knife 52 of a cutting device 54 can be inserted, so that the fabric web is cut in the area of this free space 50 along a cutting edge or line can.
  • each of the light barriers 56 and 58 in each case comprises a light source 60 or 62, from which a light beam 64 or 66 extends to a photocell 68 or 70.
  • the light beams 64 and 66 are arranged such that they run across the entire fabric web 20 in the region of the bend in a plane parallel to the fabric layer 34.
  • the light beams 64 and 66 can now either be aligned so that they also run parallel to the fabric web 20.
  • the light beams 64 and 66 are inclined by an angle A with respect to a surface formed by the material web in the region of the bend 48. Based on the fact that the light beams 64 and 66 have a width B, the material web moved into one of these light beams 64 and 66 covers the beam in its entire width B and thus a clear signal on the front side 68 and 70 trigger which is connected to a control 72.
  • This control 72 regulates a drive 73 of the preset roller 30 shown in FIG. 1 as a function of the signals transmitted to it by the photocells 68 and 70, respectively.
  • the piece 20 'of the fabric web 20 is shortened visibly and in this piece 20' there is a tension in the longitudinal direction of the fabric web, which has the consequence that also the bend 48 has a shorter arc length due to the shortening of the available material web 20 and is deformed up to the bend designated 48a.
  • the fabric web 20 as shown in broken lines in FIG. 3, crosses the light beam 66 from the light barrier 58 and thus covers the photocell 70 so that the latter reports a negative signal to the control 72. From this negative signal, the controller 72 recognizes that the presetting roller 30 is feeding the fabric web 20 at too low a speed and will therefore increase the speed of the drive of the presetting roller 30.
  • the specification roller 30 presents the fabric web 20 at a greater speed than the speed of the laying carriage, the piece 20 'between the specification roller 30 and the fabric layer 34 is lengthened, which simultaneously has the result that a larger piece of the fabric web is also in the region of the bend 48 is available, so that the arc length of the bend 48 increases and thus the bend 48 to the bend 48b, shown in phantom in FIG. 2, deforms.
  • the fabric web 20 thus traverses the light beam 64 of the light barrier 56, as shown in FIG. 3, so that the photocell 68 is covered and this reports a negative signal to the controller 72, while the photocell 70 still reports a positive signal.
  • the controller 72 thus recognizes that the specification roller 30 is running too fast and will therefore reduce the speed of the drive of the specification roller 30.
  • the problem can arise that the bend 48 when the piece 20 'is enlarged does not form into the bend 48b and triggers the corresponding signal for the control 72, but rather - as in FIG 2 dotted - in the lower region of the bend 48 forms a double fold 48c and thereby compensates for the length of the piece 20 '.
  • the guide tubes 44 and 46 are additionally provided with additional air nozzles 74 and 76, which act on the fabric web 20 in the region of the bend 48 in the direction of an enlargement of this bend.
  • the air nozzles 74 are switched off, while the air nozzles 76 act on the fabric web 20 in the region of the bend 48 and thus cause the bend 48b to be formed even with substances with low inherent rigidity when the length of the piece 20 'is increased.
  • the fabric roll 18 can also be provided with an additional drive, so that the fabric web 20 can be fed to the predetermined roller 30 without tension, which can be achieved, for example, by the deflection rollers 24 and 26 being held on movable rockers 78 and 80, which react to a shortening or lengthening of the fabric web 20 between the fabric roll 18 and the specification roller 30 and control the drive of the fabric roll 18 accordingly.
  • FIG. 4 insofar as the same parts are used as in the first exemplary embodiment, they are also provided with the same reference numerals, so that reference can be made to the description of the first exemplary embodiment in this regard.
  • two light barriers 82 and 84 which detect the displacement of the free-hanging bend 48 by observing the same in its tangential direction 86 and 88, respectively .
  • the light barrier 82 which detects the position of the bend 48 in the tangential direction 86, is effective when laying from right to left as shown in FIG. 4, while it would be the light barrier 84 when laying from left to right.
  • Each of the light barriers 82 and 84 comprises a planar reflection detection unit 90 and 92 with an integrated light source and photocell, which in a tangent to the bend 48 aligned cylindrical or conical detection area 94 or 96 the fabric 20 'in the bend 48 detected by reflection .
  • This detection area 94 or 96 has a predetermined diameter D, in particular the extent of the detection area 94, 96 in a direction perpendicular to the surface formed by the fabric web 20 'is decisive.
  • the detection area 94 is aligned so that it is covered by the bend 48 in the normal position approximately to half, so that the detection unit 90 in the direction perpendicular to the surface formed by the fabric 20 'by an overlap half of the bend 48 of the detection area 94 is detected.
  • the detection area 94 is not covered by the bend 48a. However, if the bend is shifted to the left to the bend 48b, the detection area 94 is completely covered by the bend 48b. This different coverage of the detection area 94 therefore makes it possible for the detection unit 90 to recognize whether and in which direction the bend 48 is shifted.

Landscapes

  • Treatment Of Fiber Materials (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Claims (17)

  1. Machine de dépose en couches d'une bande de matière, comprenant un guide de bande tirant la bande à partir d'un rouleau de matière et la déposant en couches, ce guide comportant un dispositif de distribution d'une bande de matière opérant en correspondance à la vitesse de la machine de dépose, ainsi qu'une commande de détensionnement, qui contrôle à l'aide d'au moins une barrière de détection opérant sans contact une boucle de la bande formée sur le trajet dans le guide de bande en ce qui concerne ses écarts par rapport à une grosseur normale, caractérisée en ce que la boucle (48) de bande de matière est disposée entre le dispositif (30) de distribution de matière et la couche de matière (34) déposée, en ce que la boucle de bande est constituée par une courbure (48) d'une partie de bande (20') tombant librement dans une direction orientée transversalement à la direction de descente et en ce que la barrière de détection (56, 58) capte une modification d'une longueur d'arc de la courbure (48) par l'intermédiaire d'un décalage de la courbure (48) pendant librement.
  2. Machine de dépose en couches selon la revendication 1, caractérisée en ce que la bande de matière (20') est déviée, dans la zone de la courbure (48), par rapport à la direction de descente d'un angle compris entre environ 90° et 170°.
  3. Machine de dépose en couches selon la revendication 2, caractérisée en ce que la bande de matière (20') est déviée, dans la zone de la courbure (48), par rapport à la direction de descente, d'un angle compris entre environ 90° et 150°.
  4. Machine de dépose en couches selon une des revendications précédentes, caractérisée en ce que la barrière de détection (56, 58) capte un décalage de la courbure (48) en libre suspension dans une direction perpendiculaire à la direction de descente.
  5. Machine de dépose en couches selon la revendication 4, caractérisée en ce que la barrière de détection est orientée tangentiellement à la courbure (48).
  6. Machine de dépose en couches selon la revendication 5, caractérisée en ce que la barrière de détection explore, dans une direction perpendiculaire à la surface formée par la bande de matière (20'), une zone d'une largeur prédéterminée et elle détecte quelle partie de cette zone est recouverte par la courbure.
  7. Machine de dépose en couches selon la revendication 4, caractérisée en ce que la cellule de détection (56, 58) est orientée transversalement à la bande de matière (20') sur toute sa largeur et, pour une longueur normale d'arc de la courbure (48), elle est disposée d'un côté de celle-ci.
  8. Machine de dépose en couches selon une des revendications précédentes, caractérisée en ce qu'il est prévu deux barrières de détection (56, 58) captant respectivement un décalage de la courbure (48) dans chacune de deux directions mutuellement opposées.
  9. Machine de dépose en couches selon une des revendications précédentes, caractérisée en ce que la barrière de détection (56, 58) est orientée d'un angle aigu (A) par rapport à la surface constituée par la bande de matière (20').
  10. Machine de dépose en couches selon une des revendications précédentes, caractérisée en ce que la barrière de détection est une cellule photo-électrique (56, 58).
  11. Machine de dépose en couches selon une des revendications précédentes, caractérisée en ce que la courbure (48) et la barrière de détection (56, 58) sont disposées dans la zone d'un ensemble de dépose en couches (32).
  12. Machine de dépose en couches selon une des revendications précédentes, caractérisée en ce que la courbure (48) est disposée entre un bord de dépose et la couche déposée (34).
  13. Machine de dépose en couches selon une des revendications 1 à 11, caractérisée en ce que la courbure (48) est disposée entre une arête de coupe (50, 52) et la couche déposée (34).
  14. Machine de dépose en couches selon une des revendications précédentes, caractérisée en ce que le guide (16) de la bande de matière comporte, pour former la courbure (48), un élément de guidage établissant la direction orientée perpendiculairement à la direction de descente.
  15. Machine de dépose en couches selon une des revendications 1 à 13, caractérisée en ce qu un trajet en forme d'arc de la bande de matière (20') dans la zone de transition entre le guide de bande (16) et la couche déposée (34) sert de courbure (48) formant la boucle de bande de matière.
  16. Machine de dépose en couches selon une des revendications précédentes, caractérisée en ce qu'il est prévu des dispositifs (44, 46, 74, 76) pour solliciter la courbure (48) de façon à obtenir une longueur maximale d'arc.
  17. Machine de dépose en couches selon la revendication 16, caractérisée en ce que la courbure (48) est sollicitée par un courant d'air.
EP88120886A 1987-12-24 1988-12-14 Machine de dèpose en couches Expired - Lifetime EP0322645B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3744034 1987-12-24
DE19873744034 DE3744034A1 (de) 1987-12-24 1987-12-24 Legemaschine

Publications (3)

Publication Number Publication Date
EP0322645A2 EP0322645A2 (fr) 1989-07-05
EP0322645A3 EP0322645A3 (en) 1990-10-10
EP0322645B1 true EP0322645B1 (fr) 1993-03-03

Family

ID=6343556

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88120886A Expired - Lifetime EP0322645B1 (fr) 1987-12-24 1988-12-14 Machine de dèpose en couches

Country Status (4)

Country Link
US (1) US4958819A (fr)
EP (1) EP0322645B1 (fr)
JP (1) JPH01209273A (fr)
DE (2) DE3744034A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2669965B1 (fr) * 1990-12-04 1994-11-18 Europ Propulsion Machine de drapage mecanise pour former un revetement de caoutchouc sur la paroi interne d'une virole.
US5447296A (en) * 1993-05-26 1995-09-05 Cox; Michael A. Cloth spreading system
DE102005016745A1 (de) * 2005-04-11 2006-10-12 Saurer Gmbh & Co. Kg Verfahren und Vorrichtung zum Ablegen einer flexiblen Materialbahn
DE102006010069A1 (de) * 2006-03-04 2007-09-06 Rosink Gmbh + Co Kg Vorrichtung zum Ablegen von Bandmaterial
US7887474B2 (en) * 2007-06-07 2011-02-15 St. Marys Box Company, Inc. Article forming paper wrapping device

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1096535B (it) * 1978-06-09 1985-08-26 Ima Spa Apparecchiatura per la stesura di tessuti in strati sovrapposti su banchi,per industrie confezionatrici di indumenti
DE3008508C2 (de) * 1980-03-05 1983-09-22 G. O. Stumpf GmbH & Co KG, 7421 Mehrstetten Vorrichtung zum Auslegen einer Materialbahn biegeweicher Konsistenz
US4460350A (en) * 1980-09-02 1984-07-17 Sperry Corporation Continuous printed paper stacking device
DE3137876C2 (de) * 1981-09-23 1983-10-27 Günter O. 7432 Urach Stumpf Vorrichtung zum Auslegen von Flachmaterial
JPS58202258A (ja) * 1982-05-15 1983-11-25 Keiko Tagawa 延反機における解反装置
US4494948A (en) * 1982-07-06 1985-01-22 Sperry Corporation Air controlled paper stacker
JPS5948353A (ja) * 1982-09-11 1984-03-19 Kawakami Seisakusho:Kk 延反機
SU1068364A1 (ru) * 1982-09-24 1984-01-23 Волгоградское Специальное Конструкторское Бюро Научно-Производственного Объединения "Нефтехимавтоматика" Устройство дл укладки эластичных листов в стопу
FR2579962B1 (fr) * 1985-04-04 1987-07-03 Lectra Systemes Sa
EP0241606A1 (fr) * 1986-04-14 1987-10-21 Keiko Tagawa Machine à étendre

Also Published As

Publication number Publication date
DE3878871D1 (de) 1993-04-08
JPH01209273A (ja) 1989-08-23
US4958819A (en) 1990-09-25
DE3744034A1 (de) 1989-07-06
EP0322645A2 (fr) 1989-07-05
EP0322645A3 (en) 1990-10-10

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