EP0860528B1 - Dispositif de tirage et mécanique d'armure de métier à tisser comprenant un tel dispositif - Google Patents
Dispositif de tirage et mécanique d'armure de métier à tisser comprenant un tel dispositif Download PDFInfo
- Publication number
- EP0860528B1 EP0860528B1 EP19980420023 EP98420023A EP0860528B1 EP 0860528 B1 EP0860528 B1 EP 0860528B1 EP 19980420023 EP19980420023 EP 19980420023 EP 98420023 A EP98420023 A EP 98420023A EP 0860528 B1 EP0860528 B1 EP 0860528B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drawing device
- piston
- heald
- cylinders
- cylinder
- 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
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
- D03C3/00—Jacquards
- D03C3/22—Fluid-operated jacquards
-
- 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
- D03C3/44—Lingoes
Definitions
- the invention relates to a device for drawing a heald weaving loom and weaving machine mechanics weave of Jacquard type comprising such a device.
- the first weaving looms used weights hanging from the healds of the harness.
- the harnesses were then fitted with springs connecting the lower part of the beams of the harness to the frame of the machine.
- a spring has the disadvantage that the force which it exerts on the arm is proportional to the displacement of the latter.
- F F 0 + kx, in which F 0 is the value of the force obtained at the low position, k is the stiffness constant of the spring and x the displacement from the rest position.
- the invention relates to a device for drawing of a heddle from a Jacquard type loom comprising a piston kinematically linked to said beam, said piston being movable in a cylinder under the effect of a pressure higher than atmospheric pressure prevailing in a chamber and a tensile force exerted by said beam, characterized in that the connection between said piston and said smooth comprises a rod integral with one part of said piston and on the other hand a stirrup arranged around said cylinder, said stirrup being connected to said beam.
- the construction of the invention makes it possible to connect the boom and the piston without crossing the bulkhead of the chamber in which prevails the pressure higher than atmospheric pressure. This avoids the drilling of holes which would result in large leaks of compressed air.
- the stirrup of the invention allows to reach the piston rod, which is necessarily arranged under it so that the overpressure prevailing in the pneumatic device chamber induces movement of the piston down, to the rail which is located above the pulling device.
- the cylinder carries, in its lower end part, means for guiding the rod in translation. These means of guides allow smooth translation of the rod and piston inside the cylinder.
- the device comprises a plurality of cylinders arranged in rows and supplied with compressed air from a source common, by a common conduit to the cylinders of each row.
- This construction allows simple feeding of the different cylinders of the device while leaving the passage for the stirrups he understands.
- the stirrups associated with the cylinders of a row are arranged substantially perpendicular to the main axis of this row. This arrangement allows movements calipers without interference with the rows of cylinders.
- the piston is provided with sealing rings. These segments are function of limiting the leakage of compressed air between the piston and the cylinder, it being understood that these leaks are the only ones which can intervene insofar as the cylinder chamber in which the overpressure reigns is in communication with the outside atmosphere only through the piston.
- the stirrup is made up of rigid or semi-rigid blades.
- the stirrup is formed of wires.
- the invention also relates to a mechanical armor of Jacquard type loom incorporating a draw as previously described.
- a mechanical of armor works more economically than those that are known from the prior art insofar as the forces that she must exercise on the harness are lower than those that an armor mechanics associated with a device of spring draw and where the compressed air consumption is very lower than that of a device conforming to the teaching BE-A-856 625.
- the heald pulling device 1 of a Jacquard harness includes, for each boom, a cylinder 2 inside which is movable a piston 3 provided with sealing segments 4.
- a overpressure chamber 5 is provided above the piston 3.
- This room is supplied with compressed air through a duct 6 formed by a cover 7 arranged above and around a base 8 into which are inserted several cylinders 2 forming a row aligned along an axis XX '.
- Each row of cylinders is supplied by a common conduit 9, which can also serve as support for bases 8, from a common source, such as the pressure network of a workshop.
- a rod 10 is secured on the one hand to the underside of the piston and on the other hand to a substantially horizontal plate or blade 11.
- the plate 11 is, for its part, integral with a stirrup 12 formed by two blades 12 a substantially vertical and extending upwards from the plate 11. In their upper part, the blades 12 a are connected by a cross member 12 b belonging to the stirrup 12 and connected in its central part to the beam 1.
- the force F is transmitted by the rigid rod 10 to the plate 11 and via the blades 12 a to the cross member 12 b which itself transmits it to the arm 1.
- the tensile force F 'coming, at certain times, from the Jacquard mechanism placed above the harness is transmitted by the arm 1 to the cross member 12 b and, from there, to the blades 12 a and to the plate 11, which tends to cause the piston 3 to go back up inside the cylinder 2 due to the rigid connection made by the rod 10 against the permanent force pressure F.
- the cylinder 2 comprises in its lower part a internal collar 16 whose internal diameter is substantially smaller than the diameter of cylinder 2, so that this collar constitutes a means of guiding the rod 10 in translation and possibly a limit stop for piston 3.
- This flange guarantees that the rod 10 remains substantially vertical, even when an effort transverse exerted on the stringer 1 tends to move laterally the stirrup 12.
- a comber board 17 is disposed above the device of the invention and has openings 17 substantially aligned with the axis YY 'of the cylinder 2. This alignment also ensures that a transverse force exerted on the rail 1 in above the grading board will not be transmitted directly to the device of the invention.
- the movements of the rails 1 are determined in amplitude and speed by Jacquard mechanics, the pulling device opposing a resistance substantially constant at the rise of the rails.
- stirrups 12 associated with cylinders 2 of a row are arranged substantially perpendicular to its main axis XX ', of so that their movements do not interfere with base 8.
- the bracket has been shown with blades 12 has rigid or semi-rigid.
- the plate 11 and the cross member 12 b are permanently subjected to forces tending to separate them from one another. It is therefore not necessary that the elements connecting them are rigid.
- the stirrup can be formed of wires, it being understood that the cross-member 12 b can even be eliminated, the wires of the stirrup joining at their point of attachment with the rail 1. In this case, the wires are held spread apart by an appropriate device or rub against the cover 7.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
- Auxiliary Weaving Apparatuses, Weavers' Tools, And Shuttles (AREA)
Description
- la figure 1 est une représentation partielle en perspective d'un dispositif de tirage conforme à l'invention associé à une mécanique Jacquard et
- la figure 2 est une coupe selon la ligne II-II à la figure 1, à plus grande échelle et avec perspective.
Claims (9)
- Dispositif de tirage d'une lisse (1) de métier à tisser de type Jacquard comprenant un piston (2) cinématiquement lié à ladite lisse, ledit piston étant mobile dans un cylindre (2) sous l'effet (F) d'une pression supérieure à la pression atmosphérique régnant dans une chambre (5) et d'un effort de traction (F') exercé par ladite lisse, caractérisé en ce que la liaison entre ledit piston et ladite lisse comprend une tige (10) solidaire d'une part dudit piston et d'autre part d'un étrier (12) disposé autour dudit cylindre, ledit étrier étant relié à ladite lisse.
- Dispositif de tirage selon la revendication 1, caractérisé en ce que ledit cylindre (2) porte, dans sa partie d'extrémité inférieure, des moyens de guidage (16) de ladite tige (10) en translation.
- Dispositif de tirage selon la revendication 1, caractérisé en ce qu'il comprend une pluralité de cylindres (2) disposés en rangées et alimentés en air comprimé, à partir d'une source commune, par un conduit (6) commun aux cylindres de chaque rangée.
- Dispositif de tirage selon la revendication 3, caractérisé en ce que les étriers (12) associés aux cylindres (2) d'une rangée sont disposés sensiblement perpendiculairement à l'axe principal (XX') de ladite rangée.
- Dispositif de tirage selon la revendication 3, caractérisé en ce que lesdits cylindres (2) sont alignés avec les orifices de passage (17a) d'une planche d'empoutage (17).
- Dispositif de tirage selon la revendication 1, caractérisé en ce que ledit piston (3) est pourvu de segments d'étanchéité (4).
- Dispositif de tirage selon la revendication 1, caractérisé en ce que ledit étrier (12) est formé de lames (12a) rigides ou semi-rigides.
- Dispositif de tirage selon la revendication 1, caractérisé en ce que ledit étrier est formé de fils.
- Mécanique d'armure de métier à tisser de type Jacquard comprenant un dispositif de tirage selon l'une des revendications précédentes.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9701914A FR2759385B1 (fr) | 1997-02-13 | 1997-02-13 | Dispositif de tirage et mecanique d'armure de metier a tisser comprenant un tel dispositif |
FR9701914 | 1997-02-13 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0860528A1 EP0860528A1 (fr) | 1998-08-26 |
EP0860528B1 true EP0860528B1 (fr) | 2000-05-24 |
Family
ID=9503883
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19980420023 Expired - Lifetime EP0860528B1 (fr) | 1997-02-13 | 1998-02-06 | Dispositif de tirage et mécanique d'armure de métier à tisser comprenant un tel dispositif |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0860528B1 (fr) |
JP (1) | JP4072230B2 (fr) |
DE (1) | DE69800156D1 (fr) |
FR (1) | FR2759385B1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1748051B (zh) * | 2003-02-07 | 2010-09-29 | 格罗兹-贝克特公司 | 综丝预张紧装置 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE1016217A5 (nl) * | 2004-09-28 | 2006-05-02 | Wiele Michel Van De Nv | Gaapvormingsinrichting en weefmachine voorzien van dergelijke gaapvormingsinrichting. |
CN101058912B (zh) * | 2007-05-29 | 2011-09-14 | 浙江理工大学 | 气动提花装置 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1482640A (en) * | 1974-10-23 | 1977-08-10 | Autosyst Ltd | Warp selection devices |
DE2631175B1 (de) * | 1976-07-10 | 1977-12-29 | Wolfgang Ebisch | Rueckzugvorrichtung fuer die webelitzen einer jacquardwebmaschine |
DE2939421C2 (de) * | 1979-09-28 | 1981-09-24 | Grosse Webereimaschinen Gmbh, 7910 Neu-Ulm | Vorrichtung zum Heben und Senken der Kettfäden einer Webmaschine |
-
1997
- 1997-02-13 FR FR9701914A patent/FR2759385B1/fr not_active Expired - Fee Related
-
1998
- 1998-02-06 EP EP19980420023 patent/EP0860528B1/fr not_active Expired - Lifetime
- 1998-02-06 DE DE69800156T patent/DE69800156D1/de not_active Expired - Lifetime
- 1998-02-12 JP JP02998398A patent/JP4072230B2/ja not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1748051B (zh) * | 2003-02-07 | 2010-09-29 | 格罗兹-贝克特公司 | 综丝预张紧装置 |
Also Published As
Publication number | Publication date |
---|---|
FR2759385B1 (fr) | 1999-04-16 |
DE69800156D1 (de) | 2000-06-29 |
JPH10292243A (ja) | 1998-11-04 |
FR2759385A1 (fr) | 1998-08-14 |
EP0860528A1 (fr) | 1998-08-26 |
JP4072230B2 (ja) | 2008-04-09 |
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