EP0214576B1 - Procédé et dispositif pour enlever la couche la plus haute d'une pile composée de couches textiles - Google Patents

Procédé et dispositif pour enlever la couche la plus haute d'une pile composée de couches textiles Download PDF

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Publication number
EP0214576B1
EP0214576B1 EP86112019A EP86112019A EP0214576B1 EP 0214576 B1 EP0214576 B1 EP 0214576B1 EP 86112019 A EP86112019 A EP 86112019A EP 86112019 A EP86112019 A EP 86112019A EP 0214576 B1 EP0214576 B1 EP 0214576B1
Authority
EP
European Patent Office
Prior art keywords
stack
fabric
pressure element
plate
upper cloth
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
EP86112019A
Other languages
German (de)
English (en)
Other versions
EP0214576A1 (fr
Inventor
Hendrik Jan Herman Hobbelt
Eduard Anton Burgemeister
Theodorus Jozef Paulus Maria Kroon
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.)
Researchvereniging Nederlandse Kleding- en Tricotage-industrie (RNKT)
Original Assignee
Researchvereniging Nederlandse Kleding- en Tricotage-industrie (RNKT)
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 Researchvereniging Nederlandse Kleding- en Tricotage-industrie (RNKT) filed Critical Researchvereniging Nederlandse Kleding- en Tricotage-industrie (RNKT)
Publication of EP0214576A1 publication Critical patent/EP0214576A1/fr
Application granted granted Critical
Publication of EP0214576B1 publication Critical patent/EP0214576B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41H—APPLIANCES OR METHODS FOR MAKING CLOTHES, e.g. FOR DRESS-MAKING OR FOR TAILORING, NOT OTHERWISE PROVIDED FOR
    • A41H43/00—Other methods, machines or appliances
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/08—Separating articles from piles using pneumatic force
    • B65H3/14—Air blasts producing partial vacuum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/22—Separating articles from piles by needles or the like engaging the articles

Definitions

  • the invention relates to a method for lifting the top layer of fabric of an elastically compressible stack with a removal element for the top layer of material which can be moved over the stack, which removal element is pressed onto the stack with the smooth lower surface of a pressure element in such a way that at least one swell forms.
  • the pressure element there is a narrow finger-like element which can attack the upper layer of fabric and can be displaced in relation to the rectangular pressure element within the central opening. If this shift takes place, the swelling located within the central opening is folded and clamped against the inner edge of the central opening, which is opposite the relatively displaceable organ. The layer of fabric clamped in this way at two points can then be raised and removed. An undesired shifting of the upper layer of fabric is prevented on the other edge of the layer of fabric by a sharp-edged pressure element that can be pressed in from above.
  • the aim of the invention is to create a method in which the separation of the layers of fabric stacked on one another is ensured regardless of the type of material, without the risk of damage to the fabric layers.
  • This goal is achieved in the first place by using a pressure element whose surface contacting the upper layer of fabric has a coefficient of friction with respect to the respective upper layer of fabric, which is less than the coefficient of friction of the fabric, the pressure element after pressing on the stack the swelling is shuffling before transversely moved toward its longitudinal axis to one edge of the stack, the Warpage enlarged and then the top layer of fabric by acting on the size Warpage i F device removed from the stack and a processing station is supplied.
  • a smoothness of the surface is necessary which allows the printing element to be moved over the upper layer of fabric, whereby the upper layer of fabric is loosened in relation to the layer of fabric located underneath.
  • the Warpage produced by d-downstream pressure is increased 'to the direction of movement of Druckelemei and upstream smoothed ohi that this damage to the fabric layer to be lifted may result.
  • the increasing swell then forms the point of attack for a device and a suction device with which the loosened upper layer of fabric can be removed.
  • a method for lifting off the topmost layer of material of an elastically compressible stack using an underpressure which is generated by an air jet which is directed onto an obliquely upwardly extending plate located above the stack , such that the top layer of fabric is raised by the negative pressure generated below the plate.
  • FIGS. 3a through 3c according to which a curved shell is held against the upper layer of fabric and an air jet is blown over the surface of the shell in such a way that a negative pressure is created below the upstream, downstream edge of the shell forms, which should raise the upper layer of fabric.
  • the raised layer of fabric can then be gripped and moved according to FIGS. 9 and 10 with the aid of sharp pencils.
  • a pressure element the smooth surface of which touches the upper layers of fabric has a coefficient of friction with respect to the topmost layer of fabric, which is less than the coefficient of friction of the fabric, among each other, over and in pressure contact with the Stack is moved from an initial position above the stack to form a swell to the edge thereof, the plate with the pressure element being moved in the direction of said edge, the obliquely upward part of the plate running in the direction of said edge, and that the pressure element thereafter, without exerting pressure, is moved back into the region of the starting position while the negative pressure is generated via the stack, as a result of which the top layer of fabric, which is loosened and displaced by the swelling produced, is lifted off the stack by the negative pressure.
  • the invention also relates to a device for carrying out the method according to claim 1, which device has a pressure element which is designed as a hollow body which can be moved transversely to the longitudinal axis and has suction and blowing openings.
  • the pressure element which is designed as a hollow body and is movable transversely to its longitudinal axis, has suction nozzles, the swelling is sucked up against the hollow body in front of the pressure element, and the removal and removal of the uppermost layer of material is accomplished in this way.
  • blowing nozzles the swelling of the fabric layer is sucked into the hollow body by using the Coanda effect, removed and carried away.
  • the invention also relates to a device for carrying out the method according to claim 2, wherein according to the invention the plate with the pressure element extends obliquely upwards at an acute angle to the surface of the stack and one or more blowing openings are provided above the plate and directed towards the surface of the plate . These create a vacuum below the plate, causing the loosened upper layer of fabric to be raised against the lower side of the plate.
  • Force is given by a force directed in the horizontal direction by the arrow (10)
  • a movement towards the edge of the stack (3) transversely to the longitudinal axis of the pressure element (8) takes place.
  • the swell (7) in front of the pressure element (8) is bulged much more, ie considerably enlarged, while the swell (6) behind the pressure element (8) is pulled smooth.
  • the uppermost layer of fabric (1) can then be gripped easily and securely on the enlarged swell (7), for example by a suction pipe (11) of a removal device running parallel to the pressure element (8) and removed from the stack (3).
  • the pressure element which is designed as a hollow body (8) with an air slot or air openings, is connected to a vacuum source that is switched on during the transverse displacement, the top layer of fabric (1) in the area of the enlarged swell (7) is attached to the surface of the hollow body (8). sucked in, if necessary supported by rotation of the hollow body (8).
  • the pressure element is designed as a bent edge (12) with a rounded edge (13) of a plate (14) which is directed obliquely upwards from the edge (12) to the edge of the stack (3) . Due to the smooth rounded edge (13), a shift over the top layer of fabric (1) of the stack (3) take place under pressure contact (force according to arrow 16, Fig. 3a) by a force directed in the direction of arrow (15), Fig. 3a.
  • Fig. 3a shows that when moving in the direction of arrow (15) first the swelling or bulging of the layers of fabric takes place. From Fig. 3b it can be seen that when the edge (12) approaches the edge of the stack (3), the swell (7) relaxes and the edge region of the layers of fabric moves in a scaly manner beyond the edge of the stack (3) . The plate (14) is then raised slightly so that the force acting in the direction of the arrow (16) no longer acts on the stack (3) and the plate (14) in the direction of the arrow (17) in its starting position or in the Is moved back close to it. During this movement, compressed air is blown onto the top of the plate (14) through a line (18) arranged above the plate (14).
  • This layer of fabric (1) can then be gripped by known acceptance techniques and fed to a desired location.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Claims (4)

1. Procédé pour soulever chaque fois la couche supérieure de tissu (1) d'une pile (3) compressible élastiquement au moyen d'un élément de soulèvement (4, 14) de la couche supérieure, élément de soulèvement qui peut être déplacé au-dessus de la pile (3) et qui est pressé sur la pile (3) au moyen de la surface inférieure lisse d'un élément de pression (4, 8, 12) de telle façon qu'il se forme au moins une ondulation (7), caractérisé en ce que l'on utilise un élément de pression (4, 8, 12) dont la surface (13) qui touche la couche supérieure de tissu (1) présente chaque fois par rapport à la couche supérieure de tissu un coefficient de frottement qui est plus petit que le coefficient de frottement mutuel des couches de tissu, en ce qu'après l'avoir pressé sur la pile on déplace cet élément de pression perpendiculairement à son axe longitudinal en direction d'un bord de la pile (3) de telle façon qu'il pousse devant soi l'ondulation (7) tandis que l'ondulation (7) s'accroit, et en ce qu'ensuite au moyen d'un dispositif de saisie (11) qui saisit l'ondulation (7) on enlève la couche supérieure de tissu (1) de la pile (3) et on l'amène à un poste de travail.
2. Procédé pour soulever chaque fois la couche supérieure de tissu (1) d'une pile (3) compressible élastiquement en se servant de dépression produite par un jet d'air dirigé sur une plaque (14) située au-dessus de la pile et orientée obliquement vers le haut, de telle façon que la couche supérieure de tissu (1) soit soulevée par la dépression produite au-des-sous de la plaque (14), caractérisé en ce que l'on déplace au-dessus de la pile et en contact avec celle-ci un élément de pression (12) dont la surface lisse (13) qui touche les couches supérieures de tissu présente chaque fois par rapport à la couche supérieure de tissu (1) un coefficient de frottement qui est plus petit que le coefficient de frottement des couches de tissu entre elles, depuis une position initiale située au-dessus de la pile (3) en direction d'un bord de celle-ci tout en produisant une ondulation (7), la plaque (14) étant déplacée ensemble avec l'élément de pression (12) en direction du bord précité, la partie de la plaque orientée obliquement vers le haut s'étendant en direction du bord précité, et en ce qu'ensuite l'élément de pression est ramené au voisinage de sa position initiale sans exercer de pression tandis qu'une dépression est produite au-dessus de la pile, de façon à soulever de la pile, par l'effet de la dépression, la couche supérieure de tissu qui a été libérée et déplacée par l'ondulation (7) qui s'est produite.
3. Dispositif pour la mise en oeuvre du procédé selon la revendication 1, caractérisé en ce que l'élément de pression (4) est réalisé comme un corps creux (8) pouvant être déplacé perpendiculairement à son axe longitudinal et muni d'ouvertures (9) d'aspiration ou de soufflage.
4. Dispositif pour la mise en oeuvre du procédé selon la revendication 2, caractérisé en ce que l'élément de pression (12) est disposé attenant à la plaque (14), cette plaque s'étendant obliquement vers le haut en formant un angle aigu avec la surface de la pile (3), et en ce qu'au-dessus de la plaque (14) sont prévues une ou plusieurs d'ouvertures de soufflage (18) dirigées vers la surface de la plaque (14).
EP86112019A 1985-09-02 1986-08-30 Procédé et dispositif pour enlever la couche la plus haute d'une pile composée de couches textiles Expired - Lifetime EP0214576B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8502400A NL8502400A (nl) 1985-09-02 1985-09-02 Werkwijze en inrichting voor het afnemen van het bovenste pand van een stapel panden zoals textielpanden.
NL8502400 1985-09-02

Publications (2)

Publication Number Publication Date
EP0214576A1 EP0214576A1 (fr) 1987-03-18
EP0214576B1 true EP0214576B1 (fr) 1990-01-17

Family

ID=19846493

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86112019A Expired - Lifetime EP0214576B1 (fr) 1985-09-02 1986-08-30 Procédé et dispositif pour enlever la couche la plus haute d'une pile composée de couches textiles

Country Status (8)

Country Link
US (1) US4802662A (fr)
EP (1) EP0214576B1 (fr)
JP (1) JPS62126054A (fr)
KR (1) KR870002785A (fr)
BR (1) BR8604180A (fr)
DE (1) DE3668309D1 (fr)
ES (1) ES2001630A6 (fr)
NL (1) NL8502400A (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8602953A (nl) * 1986-11-20 1988-06-16 Nl Kleding & Tricotage Rnkt Inrichting voor het onderste boven leggen van een lap of vel van flexibel materiaal.
US4917368A (en) * 1989-03-16 1990-04-17 Polaroid Corporation Sheet feeding method and apparatus
DE4009039A1 (de) * 1990-03-21 1991-09-26 Inst Textil & Verfahrenstech Verfahren und vorrichtung zum vereinzeln von gestapelten textilen zuschnitten
US5431384A (en) * 1994-05-10 1995-07-11 Polaroid Corporation Method and apparatus for feeding print media
US6688591B2 (en) 2002-04-05 2004-02-10 Agfa Corporation Apparatus and method for removing slip sheets
JP5897999B2 (ja) * 2012-06-20 2016-04-06 東洋自動機株式会社 コンベアマガジン式空袋供給装置
EP3994084A1 (fr) * 2019-07-02 2022-05-11 The North Face Apparel Corp. Appareil, système et procédés d'aéro-préhension

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US734670A (en) * 1901-05-20 1903-07-28 Edward Thomas Cleathero Paper-feeding machine.
US1460336A (en) * 1922-03-09 1923-06-26 Albert P Hart Paper-feeding mechanism for printing presses
US1546184A (en) * 1923-11-30 1925-07-14 Lester K Aldrich Feeder
NL295100A (fr) * 1962-07-09
NL7103678A (fr) * 1971-03-18 1972-09-20
GB1437347A (en) * 1972-06-14 1976-05-26 Marine Eng Co Stockport Ltd Device for removing one piece of material from a stack of pieces
BE806542A (nl) * 1973-10-26 1974-02-15 Bijttebier Gaspar A H Werkwijze voor het opnemen van een laag soepel materiaal vanaf een stapel en inrichting die deze werkwijze toepast
FR2456690A1 (fr) * 1979-05-17 1980-12-12 Anvar Procede de prehension et dispositif de manutention utilisant ce procede
IL71133A (en) * 1984-03-02 1988-02-29 Galram Technology Ind Ltd Method and apparatus for feeding sheets,particularly fabrics from a stack

Also Published As

Publication number Publication date
KR870002785A (ko) 1987-04-13
JPS62126054A (ja) 1987-06-08
EP0214576A1 (fr) 1987-03-18
NL8502400A (nl) 1987-04-01
BR8604180A (pt) 1987-04-28
DE3668309D1 (de) 1990-02-22
US4802662A (en) 1989-02-07
ES2001630A6 (es) 1988-06-01

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