EP0412453A1 - Ruban pour aiguille avec épaisseur variable pour métiers à aiguilles - Google Patents
Ruban pour aiguille avec épaisseur variable pour métiers à aiguilles Download PDFInfo
- Publication number
- EP0412453A1 EP0412453A1 EP90114955A EP90114955A EP0412453A1 EP 0412453 A1 EP0412453 A1 EP 0412453A1 EP 90114955 A EP90114955 A EP 90114955A EP 90114955 A EP90114955 A EP 90114955A EP 0412453 A1 EP0412453 A1 EP 0412453A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strap
- gripper
- section
- area
- thickness
- 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
Links
- 238000005452 bending Methods 0.000 claims abstract description 6
- 230000007935 neutral effect Effects 0.000 claims abstract description 6
- 230000003247 decreasing effect Effects 0.000 claims description 4
- 239000000243 solution Substances 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
- D03D47/27—Drive or guide mechanisms for weft inserting
- D03D47/275—Drive mechanisms
- D03D47/276—Details or arrangement of sprocket wheels
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
- D03D47/27—Drive or guide mechanisms for weft inserting
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
- D03D47/27—Drive or guide mechanisms for weft inserting
- D03D47/271—Rapiers
- D03D47/272—Rapier bands
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
- D03D47/27—Drive or guide mechanisms for weft inserting
- D03D47/277—Guide mechanisms
Definitions
- the present invention concerns improvements in gripper straps for gripper looms, that is, in the straps which control the motion of the grippers and thus of the weft yarns through the shed of modern looms.
- the EP-81-102588 has already supplied a solution to the problem of varying the stiffness of gripper straps along their length: this solution consists in incorporating into a conventional strap of normal stiffness a core or lining of variable thickness and/or width along the strap length.
- the straps used for this system are in fact particularly rigid because of their ribbed section with great overall thickness (required to form said recess and allow proper engagement with said guides and precise guiding of the gripper at the centre of the shed). Similar situations can besides arise also with other types and arrangements of gripper straps.
- the strap is of the type moved by a toothed wheel with reciprocating motion, the teeth of which engage into notches formed along said strap, the distance between said notches in the strap according to the invention can be varied according to the position taken up therein by the neutral bending axis.
- the gripper strap according to the invention is of the type having longitudinal stiffening ribs, and its thickness will advantageously be reduced only in correspondence of said longitudinal ribs, as far as causing the end of the strap opposite to that carrying the gripper to take up a flat rectangular shape.
- the decrease in thickness of the strap can be continuous and uniform or, alternatively, discontinuous by steps, along the length of the strap. It can furthermore be uniform, or not uniform, across the width of the strap, giving rise to symmetrical or asymmetrical sections, according to cases.
- the gripper strap according to the invention has the following cross section: a channel or C section whose flanges forming said ribs have a constant thickness in the area of the strap end carrying the gripper; a channel or C section whose flanges forming said ribs have a gradually decreasing thickness in an area adjacent to the previous one and extending therefrom; and a rectangular or T section in the area of the strap end opposite to that carrying the gripper.
- the gripper strap N carrying the gripper P through the warp shed of the loom T, has to be particularly flexible in correspondence of its part caused to adhere - by conventional guide means P1 and P2 - to the wheel R controlling its motion, the teeth of which engage into its notches.
- this is obtained - in the case of particularly rigid straps - by gradually reducing the thickness of the strap over at least part of its section, starting from an area 2 close to the end 3 carrying the gripper and extending towards the opposite end 4.
- the strap N according to the invention is of the type with channel section, having lateral longitudinal stiffening ribs 1, for the gripper to be properly guided at the centre of the shed.
- the configuration of the strap N shown in figs. 2 to 5 is such that only the ribs 1 are gradually and evenly reduced in thickness, so as to be totally eliminated in correspondence of its end 4, while the remaining part of the strap N keeps its thickness unvaried.
- Said strap end 4 thus takes up a perfectly rectangular and relatively thin symmetrical section (fig. 5), which is fully apt to guarantee a high flexibility of the strap in this area. In the adjacent areas the flexibility will be similar, while the strap will then gradually stiffen towards its end 3 carrying the gripper, taking up its maximum thickness between said end 3 and the area 2 from which the ribs 1 start to grow thinner.
- a gripper strap similar to that shown in figs. 2 to 5, is illustrated in figs. 6 to 10: the only difference in respect of the previous embodiment is that the thickness of this strap varies discontinuously, by steps, along its full length.
- a first length 5 of maximum uniform thickness in correspondence of the end area carrying the gripper (its cross section is shown in fig. 8), is followed - between points 6 and 7 - by a length 8 of reduced thickness of the ribs 1 (cross section shown in fig. 9) and then - beyond point 7 - by a final length 9 wherein the ribs 1 are eliminated and the strap takes up a thin rectangular section (fig. 10).
- 1 the strap always keeps a symmetrical cross section.
- the ribs 1 of the strap are again gradually and evenly reduced in thickness, but said reduction is more pronounced - in respect of the strap embodiment of figs. 2 to 5 - whereby the strap end 10, opposite to the end 3 carrying the gripper, takes up a T section, as shown in fig. 14.
- the cross section is perfectly symmetrical. It could however be provided for the strap - having a ribbed or non-ribbed section - to be unevenly reduced in thickness across its width, in which case, the cross section of the strap would be asymmetrical.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
- Knitting Machines (AREA)
- Belt Conveyors (AREA)
- Working Measures On Existing Buildindgs (AREA)
- Rod-Shaped Construction Members (AREA)
- Reinforcement Elements For Buildings (AREA)
- Clamps And Clips (AREA)
- Manipulator (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT8921482A IT1230810B (it) | 1989-08-09 | 1989-08-09 | Nastro portapinza a spessore variabile per telai di tessitura a pinze. |
IT2148289 | 1989-08-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0412453A1 true EP0412453A1 (fr) | 1991-02-13 |
EP0412453B1 EP0412453B1 (fr) | 1994-05-18 |
Family
ID=11182488
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90114955A Expired - Lifetime EP0412453B1 (fr) | 1989-08-09 | 1990-08-03 | Ruban pour aiguille avec épaisseur variable pour métiers à aiguilles |
Country Status (12)
Country | Link |
---|---|
EP (1) | EP0412453B1 (fr) |
JP (1) | JP2937434B2 (fr) |
KR (1) | KR970008885B1 (fr) |
CN (1) | CN1023331C (fr) |
AT (1) | ATE105879T1 (fr) |
BR (1) | BR9003888A (fr) |
CZ (1) | CZ281780B6 (fr) |
DE (1) | DE69008968T2 (fr) |
DK (1) | DK0412453T3 (fr) |
ES (1) | ES2056318T3 (fr) |
IT (1) | IT1230810B (fr) |
SK (1) | SK279146B6 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE1022754B1 (nl) * | 2015-02-26 | 2016-08-30 | Picanol Nv | Geleidingsinrichting voor een lans voor een grijperweefmachine |
WO2018028899A1 (fr) | 2016-08-11 | 2018-02-15 | Picanol | Bande de pinçage et unité de pinçage pour métier à tisser à projectiles |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09176934A (ja) * | 1995-12-27 | 1997-07-08 | Toyota Autom Loom Works Ltd | レピア織機に用いるスプロケットホイール及びレピアバンド並びにレピア織機における緯入れ装置 |
LT3988153T (lt) | 2015-03-31 | 2024-08-26 | Fisher & Paykel Healthcare Limited | Vartotojo sąsaja dujų tiekimui į kvėpavimo takus |
EP3995168A1 (fr) | 2016-08-11 | 2022-05-11 | Fisher & Paykel Healthcare Limited | Conduit pliable, interface patient et connecteur de casque |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL89639C (fr) * | ||||
FR1397230A (fr) * | 1964-01-17 | 1965-04-30 | Perfectionnements aux machines à tisser à alimentation continue en trame | |
DE2030433A1 (en) * | 1970-06-20 | 1971-12-30 | Fa. Hermann Wangner, 7410 Reutlingen | Weft lance - with bowed steel spring stiffners |
DE2902729B1 (de) * | 1979-01-25 | 1980-02-21 | Dornier Gmbh Lindauer | Schussfadeneintragorgan fuer schuetzenlose Webmaschinen |
EP0102588A2 (fr) * | 1982-09-03 | 1984-03-14 | Vilminore Officine Meccaniche S.P.A. | Courroie à flexibilité variable pour métiers à tisser à lances porte-trame |
FR2582322A3 (fr) * | 1985-05-22 | 1986-11-28 | Lamiflex Srl | Structure de lance pour metier a tisser sans navette. |
EP0275479A1 (fr) * | 1986-12-23 | 1988-07-27 | VAMATEX S.p.A. | Moyens pour guider le movement d'une paire de pince-trame dans la foule d'un métier à tisser |
-
1989
- 1989-08-09 IT IT8921482A patent/IT1230810B/it active
-
1990
- 1990-08-03 ES ES90114955T patent/ES2056318T3/es not_active Expired - Lifetime
- 1990-08-03 DK DK90114955.9T patent/DK0412453T3/da active
- 1990-08-03 DE DE69008968T patent/DE69008968T2/de not_active Expired - Fee Related
- 1990-08-03 EP EP90114955A patent/EP0412453B1/fr not_active Expired - Lifetime
- 1990-08-03 AT AT90114955T patent/ATE105879T1/de not_active IP Right Cessation
- 1990-08-08 BR BR909003888A patent/BR9003888A/pt not_active IP Right Cessation
- 1990-08-09 KR KR90012224A patent/KR970008885B1/ko not_active IP Right Cessation
- 1990-08-09 JP JP2211422A patent/JP2937434B2/ja not_active Expired - Fee Related
- 1990-08-09 CN CN90107361A patent/CN1023331C/zh not_active Expired - Fee Related
- 1990-08-09 SK SK3934-90A patent/SK279146B6/sk unknown
- 1990-08-09 CZ CS903934A patent/CZ281780B6/cs not_active IP Right Cessation
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL89639C (fr) * | ||||
FR1397230A (fr) * | 1964-01-17 | 1965-04-30 | Perfectionnements aux machines à tisser à alimentation continue en trame | |
DE2030433A1 (en) * | 1970-06-20 | 1971-12-30 | Fa. Hermann Wangner, 7410 Reutlingen | Weft lance - with bowed steel spring stiffners |
DE2902729B1 (de) * | 1979-01-25 | 1980-02-21 | Dornier Gmbh Lindauer | Schussfadeneintragorgan fuer schuetzenlose Webmaschinen |
EP0102588A2 (fr) * | 1982-09-03 | 1984-03-14 | Vilminore Officine Meccaniche S.P.A. | Courroie à flexibilité variable pour métiers à tisser à lances porte-trame |
FR2582322A3 (fr) * | 1985-05-22 | 1986-11-28 | Lamiflex Srl | Structure de lance pour metier a tisser sans navette. |
EP0275479A1 (fr) * | 1986-12-23 | 1988-07-27 | VAMATEX S.p.A. | Moyens pour guider le movement d'une paire de pince-trame dans la foule d'un métier à tisser |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE1022754B1 (nl) * | 2015-02-26 | 2016-08-30 | Picanol Nv | Geleidingsinrichting voor een lans voor een grijperweefmachine |
WO2016134973A1 (fr) * | 2015-02-26 | 2016-09-01 | Picanol | Dispositif de guidage pour lance dans un métier à tisser à pince |
WO2018028899A1 (fr) | 2016-08-11 | 2018-02-15 | Picanol | Bande de pinçage et unité de pinçage pour métier à tisser à projectiles |
BE1024494B1 (nl) * | 2016-08-11 | 2018-03-12 | Picanol Naamloze Vennootschap | Grijperband en grijpereenheid voor een grijperweefmachine |
CN109563658A (zh) * | 2016-08-11 | 2019-04-02 | 必佳乐公司 | 用于片梭织机的片梭带和片梭单元 |
EP3497273B1 (fr) | 2016-08-11 | 2022-04-06 | Picanol | Bande de pinçage et unité de pinçage pour métier à tisser à projectiles |
Also Published As
Publication number | Publication date |
---|---|
ES2056318T3 (es) | 1994-10-01 |
DE69008968T2 (de) | 1994-09-15 |
BR9003888A (pt) | 1991-09-03 |
CN1023331C (zh) | 1993-12-29 |
CN1049878A (zh) | 1991-03-13 |
SK279146B6 (sk) | 1998-07-08 |
DE69008968D1 (de) | 1994-06-23 |
JP2937434B2 (ja) | 1999-08-23 |
KR910004867A (ko) | 1991-03-29 |
CZ281780B6 (cs) | 1997-01-15 |
ATE105879T1 (de) | 1994-06-15 |
JPH03137247A (ja) | 1991-06-11 |
EP0412453B1 (fr) | 1994-05-18 |
IT1230810B (it) | 1991-10-29 |
DK0412453T3 (da) | 1994-10-03 |
IT8921482A0 (it) | 1989-08-09 |
KR970008885B1 (en) | 1997-05-30 |
CS9003934A2 (en) | 1991-12-17 |
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