EP0263764B1 - Dispositif de variation de la densité des fils de chaîne dans un métier à tisser - Google Patents

Dispositif de variation de la densité des fils de chaîne dans un métier à tisser Download PDF

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Publication number
EP0263764B1
EP0263764B1 EP87420230A EP87420230A EP0263764B1 EP 0263764 B1 EP0263764 B1 EP 0263764B1 EP 87420230 A EP87420230 A EP 87420230A EP 87420230 A EP87420230 A EP 87420230A EP 0263764 B1 EP0263764 B1 EP 0263764B1
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EP
European Patent Office
Prior art keywords
boards
small
control
threads
support
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
EP87420230A
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German (de)
English (en)
French (fr)
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EP0263764A1 (fr
Inventor
Jacques Brochier
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.)
TISSAGE PAR LEVEE INDIVIDUELLE DE FILS
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TISSAGE PAR LEVEE INDIVIDUELLE DE FILS
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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C3/00—Jacquards
    • D03C3/24—Features common to jacquards of different types
    • D03C3/38—Comber boards
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C3/00—Jacquards
    • D03C3/24—Features common to jacquards of different types
    • D03C3/40—Constructions of lifting-cords

Definitions

  • the present invention relates to a device for varying the density of warp threads in a weaving loom.
  • the warp threads which are parallel to each other and which define a ply are associated with means allowing their selective displacement perpendicular to the plane which they define, in order to allow the introduction of the weft threads between the raised threads and those who are not, defining the crowd.
  • control threads each of which is equipped, at one of its ends, with a loop which is crossed by a warp thread, and the other end of which is fixed to a motion control hook.
  • control threads each of which is equipped, at one of its ends, with a loop which is crossed by a warp thread, and the other end of which is fixed to a motion control hook.
  • the machines have a fixed size and a number of control hooks limited to 1,344. This number is insufficient in the case of weaving fine threads, so that several warp threads intended to be lifted at the same time must be connected to the same control hook.
  • the assembly of control wires or harnesses can form a straight harness 2, as shown in FIG. 1 of the drawing, in the case of a mechanical drawing falling on a chain, or form a propeller 3, as shown in FIG. 2, in the case of a lateral fall to the left or to the right.
  • the connecting wires 4 between the control hooks, bearing the reference 5 in FIGS. 2 and 3, and the warp wires pass through a drip board 6, that is to say a board comprising a hole 7 for the passage of each control wire 4, and ensuring ordering of the wires and putting them in line with the corresponding warp wire.
  • Each warp thread is further subjected to the action of spring or elastic return elements, fixed on a hanging beam, and arranged, with respect to the ply of warp threads, on the side opposite that of which find the control wires, these return elements ensuring the return of each chain wire to its initial position when the action exerted on it by the control wire ceases.
  • the grouting board determines the density of the fabric.
  • FIG. 3 represents a fixed control unit 8, as well as two possibilities of arrangement of the control wires resulting from two uses of the grading board.
  • the warp threads are in the same plane.
  • the warp threads are arranged on a curved surface, preventing the introduction of the weft.
  • the document FR-A-994 962 relates to a device comprising two overlapping drip boards, each board consisting of a plurality of adjustable spacing boards, each comprising a certain number of holes for the passage of a corresponding number of wires. of the warp threads.
  • the lower board makes it possible to adjust the density of the fabric, while the upper stuffing board is called compensation and makes it possible to adapt the control harness to the density of the fabric.
  • this adaptation is very limited, and cannot be suitable for variations in density greater than 20%.
  • the object of the invention is to provide a device of this type, making it possible to obtain, simply and quickly, significant modifications in fabric density, while using the same control harness, and maintaining the ply of warp threads in a same plan.
  • this device is characterized in that each control thread of a warp thread is actuated individually by a hook and in that the control hooks are grouped on a certain number of modules, each module being mounted so adjustable with locking in the desired position, on a support integral with the frame of the apparatus, and the drip boards each have a certain number of holes for the passage of the control wires, this number being a sub-multiple of the number of hooks of a module.
  • All the control wires associated with a module are guided by a whole number of drip boards, which facilitates the conditions for adjusting the harness.
  • the number of hooks of a module is 576, while the number of holes made in a drip board is 96.
  • the width of each drip board is 9.6 mm.
  • the modules In such a configuration, the modules must be grouped in pairs, and undergo head-to-tail mounting.
  • the means for returning the warp yarns comprise boards situated below the ply of warp yarns and occupying the same arrangement as the drip boards, these boards being for this purpose mounted adjustable on their support, this support being itself mounted vertically movable by means of a jack between a position corresponding to the working position in which the control wires are stretched, and a relaxed position. This relaxed position is that which is adopted prior to a modification of the density of the tissue.
  • the adjustment of the drip boards as well as of the return boards can be obtained in different ways and in particular by engagement of the ends of the boards in the notches formed at determined spacings in two strips, by mounting between the dowel boards of spacers of width corresponding to the width desired between two boards, or by mounting boards on their support with the use of indexing means and locking means with screw or eccentric for example.
  • Figure 4 is a top view of a drip board
  • Figure 5 is a view of a return device of a warp thread
  • Figures 6 and 7 are two perspective views of two devices for positioning and holding drip or recall boards
  • Figures 8 and 9 are two side views of two devices according to the invention.
  • each control wire 4 is associated with an independent control hook. These hooks are grouped at the level of modules 9, each module comprising 576 hooks distributed by 24 plates of 24 hooks.
  • Each wire passes through a hole 10 formed in a drip board 12.
  • Each drip board 12 with a width of 9.6 mm has 93 holes 10 arranged in four parallel lines 13, each of a length of the order 120 mm.
  • the boards 12 are arranged on a raking rule 13 having two stops 14 at the ends.
  • the boards are contiguous, which corresponds to a maximum density of the wires.
  • the drip boards 12 are kept apart from each other by intermediate boards 15, which makes it possible to obtain a lower density of warp yarns.
  • the drip rule 13a has a graduated scale 16 and is equipped with a locking plate 17 in which is formed a longitudinal slot 18.
  • Each drip board is provided with '' a threaded rod 19 allowing its locking on the plate 17 using a nut 20 after locating the position of each board using an index 22 located opposite the scale 16.
  • the devices described above in the case of tipping boards apply just as well to the return boards 23 which are arranged under the ply of warp threads, and which must each occupy a position corresponding to that of a board drip.
  • the drip boards 23 have holes 24 for the passage of elastic elements 25, one end of which is fixed to the loop 26 crossed by the warp thread and the movement of which is given by a control wire 4.
  • the various return boards are mounted on the same support 27, and that this support is vertically movable by means of a jack 28 between a working position in which the return of the warp threads is carried out and an adjustment position in which the return means are relaxed.
  • FIG. 8 represents a device intended for the production of a fabric whose warp threads have a low or medium density, that is to say less than 46.8 threads per centimeter.
  • a certain number of modules 9, depending on the width of the fabric to be produced, are arranged in line, that is to say parallel to each other on the same support.
  • the spacing between these modules can be adjusted, after loosening the fixing means 29 of each module and sliding of an arm 30 secured to this module on a shaft 32 secured to the fixed support 33.
  • the arms 30 of the different modules can be blocked on the shaft 32 by eccentric means 34, and the position of each module can be determined with precision by means of a graduated scale 35 which comprises the support 33.
  • the modules are grouped in pairs, the two modules of the same pair being arranged head to tail, as shown in the figure 9.
  • two control shafts should be provided, that is to say one shaft for each series of modules.
  • the invention approves a great improvement to the existing technique by providing a device of simple design, which has been described above in the case of manual adjustment but which could be very easily automated. It goes without saying that the invention is not limited to the sole embodiments of this device described above by way of examples; on the contrary, it embraces all of its variant embodiments. Thus, for example, the number of hooks per module could be different, as well as the dimensions and the number of holes in the drip and recall boards, without departing from the scope of the invention. .

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Woven Fabrics (AREA)
EP87420230A 1986-09-05 1987-09-03 Dispositif de variation de la densité des fils de chaîne dans un métier à tisser Expired - Lifetime EP0263764B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8612884A FR2603612B1 (fr) 1986-09-05 1986-09-05 Dispositif de variation de la densite des fils de chaine dans un metier a tisser
FR8612884 1986-09-05

Publications (2)

Publication Number Publication Date
EP0263764A1 EP0263764A1 (fr) 1988-04-13
EP0263764B1 true EP0263764B1 (fr) 1991-07-24

Family

ID=9338951

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87420230A Expired - Lifetime EP0263764B1 (fr) 1986-09-05 1987-09-03 Dispositif de variation de la densité des fils de chaîne dans un métier à tisser

Country Status (6)

Country Link
US (1) US4777986A (en, 2012)
EP (1) EP0263764B1 (en, 2012)
JP (1) JPS63120130A (en, 2012)
DE (1) DE3771636D1 (en, 2012)
ES (1) ES2023933B3 (en, 2012)
FR (1) FR2603612B1 (en, 2012)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19731447A1 (de) * 1997-07-22 1999-01-28 Textilma Ag Webharnisch und Jaquardwebmaschine mit Webharnisch
FR2800395B1 (fr) * 1999-10-28 2002-03-15 Staubli Lyon Dispositif et ensemble de solidarisation de ressort de harnais jacquard et metier a tisser equipe d'un tel ensemble
PE20030320A1 (es) * 2001-07-17 2003-04-03 Gruenenthal Chemie Derivados sustituidos de 4-aminociclohexanol
BE1015313A3 (nl) * 2003-01-16 2005-01-11 Michel Van De Wiele N V Nv Harnasinrichting voor een weefmachine.
CN106801284B (zh) * 2017-03-22 2018-01-19 淄博银仕来纺织有限公司 一种利用大提花织造的分区目板的装造方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE140500C (en, 2012) *
US1150396A (en) * 1915-08-17 Eugen Seckler Comber-board.
DE201132C (en, 2012) *
DE836474C (de) * 1939-12-06 1952-04-15 Franz Bittner Vorrichtung zum Einstellen der Gallierung an Jacquardmaschinen
FR994962A (fr) * 1949-06-29 1951-11-26 Corps de façonné universel permettant le tissage d'étoffes de densités de chaîne et de largeur variables avec réappareillage immédiat
GB1079692A (en) * 1965-07-06 1967-08-16 Samuel Dracup & Sons Ltd Improvements in or relating to harnesses for jacquard machines
FR1564798A (en, 2012) * 1968-03-01 1969-03-17
FR2135883A6 (en) * 1971-04-29 1972-12-22 Gryspeerdt Andre Jacquard mechanism - using upper and lower frames carrying punched plates

Also Published As

Publication number Publication date
ES2023933B3 (es) 1992-02-16
FR2603612B1 (fr) 1988-12-09
JPH0361777B2 (en, 2012) 1991-09-20
US4777986A (en) 1988-10-18
DE3771636D1 (de) 1991-08-29
EP0263764A1 (fr) 1988-04-13
JPS63120130A (ja) 1988-05-24
FR2603612A1 (fr) 1988-03-11

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