EP3655574A1 - Dispositif de formation de foule pour un métier à tisser - Google Patents

Dispositif de formation de foule pour un métier à tisser

Info

Publication number
EP3655574A1
EP3655574A1 EP18758962.7A EP18758962A EP3655574A1 EP 3655574 A1 EP3655574 A1 EP 3655574A1 EP 18758962 A EP18758962 A EP 18758962A EP 3655574 A1 EP3655574 A1 EP 3655574A1
Authority
EP
European Patent Office
Prior art keywords
pulley
shed
pulley element
hooks
cord
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.)
Granted
Application number
EP18758962.7A
Other languages
German (de)
English (en)
Other versions
EP3655574B1 (fr
Inventor
Hannes CHRISTIAENS
Frederik DE MEDTS
Matthew Theobald
Bram Vanderjeugt
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.)
Vandewiele NV
Original Assignee
Vandewiele NV
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 Vandewiele NV filed Critical Vandewiele NV
Publication of EP3655574A1 publication Critical patent/EP3655574A1/fr
Application granted granted Critical
Publication of EP3655574B1 publication Critical patent/EP3655574B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • DTEXTILES; PAPER
    • D03WEAVING
    • D03CSHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C3/00Jacquards
    • D03C3/12Multiple-shed jacquards, i.e. jacquards which move warp threads to several different heights, e.g. for weaving pile fabrics

Definitions

  • the present invention relates in particular to ajacquard machine, comprising a number of shed-forming devices which have the properties mentioned in the preceding paragraph and each heddle of which in each shed-forming cycle can be brought to one of four different heights, as desired, according to the open-shed principle. More specifically, the present invention relates to an open-shed jacquard machine with four positions.
  • EP 0 665 312 Al describes such an open-shed jacquard machine with four positions.
  • the two cooperating pulley elements are arranged next to each other along the longitudinal direction of the blades, as a result of which they take up considerable space.
  • EP 1 111 107 Al describes a shed-forming device in which a first and a second hook pair support a respective pulley element.
  • a pulley cord is provided which cooperates with both pulley elements and is connected to a heddle, so that the pulley cord can bring about three positions of the heddle.
  • Figs. 9 and 10 a specific embodiment
  • EP 0 839 937 Al describes a shed-forming device, a first and a second hook pair of which support a respective pulley element, and which comprises a pulley cord which cooperates with these two pulley elements and is connected to a heddle.
  • the one pulley element is movable in a vertical direction in the intermediate space between a top and a bottom pulley of the other pulley element, so that the pulley elements take up relatively little space along the direction of the blades.
  • the hooks of the first hook pair can be moved in a vertical direction by a respective blade, but the hooks of the second hook pair can only be moved up and down while supported by a respective hook of the first hook pair.
  • This object is also achieved by providing a shed-forming device having the characterizing features indicated in the third paragraph of this description, in which, according to the present invention, the second pulley element is movable between its top and its bottom position in a movement space which is located at least partly within the space occupied by the first pulley element, both when the first pulley element has been brought into its top position and when it has been brought into its bottom position.
  • this shed-forming device is also referred to as the shed-forming device with two positions according to the invention.
  • the expression 'movement space of the second pulley element' in the description and the claims of this patent application is understood to mean the surrounding beam- shaped space in which the second pulley element, in a given position of the first pulley element, can move between its top position and its bottom position or, in other words, the space which is delimited by a beam whose surface area is formed by a horizontal upper face which touches the top side of the second pulley element when it is in its top position, a horizontal lower face which touches the bottom side of the second pulley element when it is in its bottom position, a first and a second lateral face which run parallel with the plane in which the blades extend, respectively touching opposite sides of the second pulley element, and a third and a fourth lateral face which are perpendicular to the first and the second lateral face, respectively touching opposite sides of the second pulley element.
  • two (groups of) warp threads can be brought to two different heights independently of each other.
  • two shed-forming devices with two positions are combined to form one shed-forming device with a footprint which is barely larger than the footprint of one existing shed-forming device.
  • a jacquard machine with two positions provided with a number of such shed-forming devices will have a smaller total footprint or will be able to position a larger number of heddles on the same footprint.
  • Fig. 1 is a diagrammatic representation of two shed-forming devices with two positions according to the present invention
  • a shed-forming device with two positions according to the present invention comprises two pulley cords (13), (14) which cooperate with respective pulley elements (1), (2).
  • Each pulley cord (13), (14) is connected to a fixed point of the device by its one end (13a), (14a) and connected to a respective heddle (30), (31) by its other end (13b), (14b).
  • the two heddles (30), (31) are provided with a heddle eyelet (30a), (31a) and are connected at the bottom to one side of a respective return spring (32), (33) whose other side is connected to a fixed point of the device and which exerts a downwardly directed force on the heddle (30), (31).
  • one or more warp threads extend through each heddle eyelet (30a), (31a).
  • the first pulley element (1) comprises two elongate holder plates (Id), (le) which extend vertically (see also Figs. 5 and 6). In the vicinity of the top and the bottom end of the holder plates, a top pulley (la) and a bottom pulley (lb), respectively, are rotatably fitted between the holder plates (Id), (le). Consequently, a vertical intermediate space is provided between the top (la) and the bottom pulley (lb), between the holder plates.
  • two (groups of) warp threads can be brought to two different heights independently of each other.
  • the first pulley element (1) comprises two elongate holder plates (Id), (le) which extend vertically (see also Figs. 5 and 6). In the vicinity of the top and the bottom end of the holder plates, a top pulley (la) and a bottom pulley (lb), respectively, are rotatably fitted between the holder plates.
  • the first pulley element (1) now also comprises an additional pulley, referred to below as the third pulley (lc), which is rotatably fitted between the holder plates (Id), (le) at a small intermediate distance above the bottom pulley (lb).
  • the third pulley (lc) has a diameter which is slightly greater than the diameter of the top (la) and the bottom pulley (lb) of the first pulley element (1).
  • the pulleys (2a), (2b) of the second pulley element (2) have a larger diameter than the third pulley (lc) of the first pulley element (1).
  • FIG. 4a, 4b, 4c and 4d A second embodiment of a shed-forming device with four positions is shown in Figs. 4a, 4b, 4c and 4d.
  • Two pulley elements (1), (2) are provided which, using the same means (3)-(12) as described above and through a suitable selection of hooks (3), (4), (5), (6) may be brought into a top (Tl), (T2) and a bottom position (Bl), (B2) independently of each other in each shed-forming cycle, as desired.
  • first pulley element (1) and a second pulley element (2) which is incorporated in the first pulley element (1), as it were.
  • the first pulley element occupies a specific space (A) and the second pulley element (2) is movable up and down between its top position in a movement space (B) which is situated at least partly inside the space (A) which is occupied by the first pulley element (1).
  • the compact design of these shed-forming devices is thus mainly achieved by the fact that one pulley element (2) is accommodated in the other pulley element (1).

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)

Abstract

L'invention concerne un dispositif de formation de foule ayant un premier (1) et un second (2) élément poulie qui peuvent être amenés vers une position supérieure (T1) ou une position inférieure (B1), comme souhaité, et une corde de poulie (15) qui peut être amenée vers quatre hauteurs différentes (H1), (H2), (H3), (H4) en coopération avec les éléments poulie (1), (2), ou deux cordes de poulie (13), (14) qui peuvent être amenées à deux hauteurs différentes (S1), (S2) en coopération avec les éléments poulie (1), (2), le second élément poulie (2) étant mobile entre sa position supérieure (T2) et sa position inférieure (B2) dans un espace de mouvement (B) qui est situé à l'intérieur de l'espace (A) qu'occupe le premier élément poulie (1).
EP18758962.7A 2017-07-20 2018-07-20 Dispositif de formation de foule pour un métier à tisser Active EP3655574B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE2017/0107A BE1025414B1 (nl) 2017-07-20 2017-07-20 Gaapvormingsinrichting voor een weefmachine
PCT/IB2018/055421 WO2019016773A1 (fr) 2017-07-20 2018-07-20 Dispositif de formation de foule pour un métier à tisser

Publications (2)

Publication Number Publication Date
EP3655574A1 true EP3655574A1 (fr) 2020-05-27
EP3655574B1 EP3655574B1 (fr) 2021-09-08

Family

ID=59569076

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18758962.7A Active EP3655574B1 (fr) 2017-07-20 2018-07-20 Dispositif de formation de foule pour un métier à tisser

Country Status (3)

Country Link
EP (1) EP3655574B1 (fr)
BE (1) BE1025414B1 (fr)
WO (1) WO2019016773A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112725975A (zh) * 2020-12-25 2021-04-30 上海超诚电子科技有限公司 提花机用滑轮组件、开口组件及提花机
CN112725977A (zh) * 2020-12-25 2021-04-30 上海超诚电子科技有限公司 提花机用新型滑轮组件、开口组件及提花机

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2715666B1 (fr) * 1994-01-28 1996-05-03 Staubli Verdol Mécanique d'armure propre à engendrer quatre positions des fils de chaîne d'un métier à tisser.
FR2754277B1 (fr) 1996-10-04 1998-12-18 Staubli Lyon Mecanique d'armure a trois positions et metier a tisser de type jacquard equipe d'une telle mecanique
BE1013193A3 (nl) * 1999-12-23 2001-10-02 Wiele Michel Van De Nv Gaapvormingsinrichting voor een weefmachine.
FR2910495B1 (fr) * 2006-12-26 2009-01-30 Staubli Lyon Soc Par Actions S Mecanique d'armure et metier a tisser de type jacquard equipe d'une telle macanique.

Also Published As

Publication number Publication date
WO2019016773A1 (fr) 2019-01-24
BE1025414B1 (nl) 2019-02-20
BE1025414A1 (nl) 2019-02-12
EP3655574B1 (fr) 2021-09-08

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