EP0330624A2 - Métier à tisser à double foule équipé d'un système de commande des crochets - Google Patents
Métier à tisser à double foule équipé d'un système de commande des crochets Download PDFInfo
- Publication number
- EP0330624A2 EP0330624A2 EP89830046A EP89830046A EP0330624A2 EP 0330624 A2 EP0330624 A2 EP 0330624A2 EP 89830046 A EP89830046 A EP 89830046A EP 89830046 A EP89830046 A EP 89830046A EP 0330624 A2 EP0330624 A2 EP 0330624A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- weaving machine
- lifter
- lifters
- electromagnet
- machine according
- 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.)
- Withdrawn
Links
- 238000009941 weaving Methods 0.000 title claims abstract description 22
- 239000003302 ferromagnetic material Substances 0.000 claims abstract description 7
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims abstract description 4
- 229920003023 plastic Polymers 0.000 claims abstract description 4
- 239000004033 plastic Substances 0.000 claims abstract description 4
- 230000009975 flexible effect Effects 0.000 claims abstract description 3
- 230000007246 mechanism Effects 0.000 claims description 8
- 238000010010 raising Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 229910052729 chemical element Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
- D03C3/00—Jacquards
- D03C3/20—Electrically-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
Definitions
- the present invention relates to a double-doffing weaving machine including improved devices for driving the lifters or hooks thereof.
- weaving machines generally comprise a plurality of lifters which operate on the warp threads under the control of driving needle members moving along horizontal paths.
- driving needle members are individually driven by pusher needles which are suitably selected by readout needles and are selectively engaged by pusher blade members.
- Weaving machines are also known comprising electromagnetic elements for advantageously replacing the lifter selection and/or latching mechanical parts.
- the task of the present invention is to overcome the above mentioned drawbacks, by providing an improved weaving machine which is very simple construction-wise and very reliable in operation.
- a main object of the present invention is to provide such an improved weaving machine in which each individual lifter can be selected by a single electromagnet.
- Another object of the present invention is to provide such an improved weaving machine including a very reduced number of moving parts.
- an improved weaving machine of the double-doffing type, in which the grid movement is performed by substantially conventional mechanisms, said weaving machine being characterized in that it essentially comprises a plurality of lifters or hooks with each of which an electromagnet and a side pusher element cooperate, said lifters consisting of a flexible strip length made of a ferro magnetic material or of a plastic material including ferromagnetic material inserts, through the thickness of said strip length being formed, at the top, longitudinal latching and discharging slots and, at the bottom, a further latching opening, there being moreover provided electromagnetic means for holding said lifters in their raised positions.
- the improved weaving machine comprises a plurality of lifters or hooks, indicated overally at the reference number 1 and having a suitable shape.
- these lifters consist of a strip length 2, having a suitable flexibility and made of a ferromagnetic material, or of a plastics material including ferromagnetic inserts at given positions, through the thickness of said strip length there being formed a first latching top slot 3, a pair of discharging intermediate slots 4 and 5, and a bottom latching opening 6.
- the side pusher element 12 is advantageous strictlyly formed by a pin affecting the lifter from an opposite portion with respect to the mentioned electromagnet, mounted on a horizontal rod 13 adapted to slide along support members 14 and counterbiassed by a resilient member (not shown) and driven by a cam mechanism 15 or the like.
- the grids are provided with tip portions 18 formed at suitable offset positions (as it is clearly shown in Figure 4) so as not to interfere against one another during the crossing stroke thereof.
- a height adjustable plate 19 which supports, adjoining each lifter, an electromagnet 20 at one pole shoe of which there is pivoted a lever 21 having at one end thereof a hook shaped portion 22.
- This hook shaped portion is specifically designed for engaging in the bottom opening 6 of the lifter so as to hold it at a raised or up position.
- the opposite end of the mentioned lever which is resiliently biassed by a spring or other operatively equivalent element, can be engaged by a pin 23 formed on a horizontal rod 24 adapted to slide along quides 25 as driven by a cam machanism 26 and also resiliently biassed.
- said electromagnet can be arranged at the left instead that at the right of the related lifter.
- an armature 27 to be engaged by the mentioned side pusher element or pin 12 and ending with a cranck end portion 27′ adapted to engage the lifter.
- the lifter is exclusively operated upon at the contact point of the cranck end of said armature and, accordingly, it will be not subjected to wear or magnetic hysteresis phenomena.
- the pin 12 In operation, in order to bring the lifter to a raised position, the pin 12 is rightward said placed ( Figures 5, 6 and 7), so as to cause the strip member 2, forming said lifter, to bend and contact the electromagnet 11 pole shoes, with the electromagnet in an energized condition.
- the armature 27 will be correspondingly displaced so as to bend, with its end portion, the lifter while adhering to the pole shoes of the electromagnet.
- the tip portion of the grid 10 will engage the lifter so as to entrain it upwardly; the same lifter will be held in the raised position by the engagement between the hook portion of the lever 21 and the lower or bottom opening 6 of the strip 2.
- the lowering movement of a filter from a raised position is obtained by energizing the respective electromagnet 20 so as disengage the shaped end of the lever 21 from the bottom opening of said lifter.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT8819548A IT1216766B (it) | 1988-02-15 | 1988-02-15 | Macchina di armatura a doppia levata, provvista di dispositivi perfezionati per il movimento degli arpini. |
IT1954888 | 1988-02-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0330624A2 true EP0330624A2 (fr) | 1989-08-30 |
Family
ID=11158949
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89830046A Withdrawn EP0330624A2 (fr) | 1988-02-15 | 1989-02-09 | Métier à tisser à double foule équipé d'un système de commande des crochets |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0330624A2 (fr) |
IT (1) | IT1216766B (fr) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0439440A1 (fr) * | 1990-01-23 | 1991-07-31 | Benedetto Bobbio | Dispositif électromagnétique modulaire commandé par ordinateur pour la sélection de fils de chaîne pour le tissage des tissus façonnés |
GB2247694A (en) * | 1990-09-07 | 1992-03-11 | Mayer Textilmaschf | Electromagnetic jacquard control device |
EP0556165A1 (fr) * | 1992-02-12 | 1993-08-18 | Tecnotessile Centro Di Ricerche S.R.L. | Dispositif de sélection et de commande des moyens de déplacement des fils de chaîne, individuellement |
US5671784A (en) * | 1995-01-17 | 1997-09-30 | N.V. Michael Van De Wiele | Three-position open-shed jacquard machine |
GB2312440A (en) * | 1996-04-26 | 1997-10-29 | Scapa Group Plc | Jacquard mechanism |
KR970075007A (ko) * | 1996-05-08 | 1997-12-10 | 아이언 미카엘 헤리스 | 헬드 제어 메카니즘 |
US5794665A (en) * | 1993-10-19 | 1998-08-18 | Grosse Webereimaschinen Gmbh | Jacquard machine hook selecting device driven by a bistable element |
WO1999013144A1 (fr) * | 1997-09-09 | 1999-03-18 | Bonas Machine Company Limited | Ensemble de transmission d'entrainement |
US6102079A (en) * | 1996-12-19 | 2000-08-15 | Scapa Group Plc | Visual diagnostic system for a jacquard machine |
-
1988
- 1988-02-15 IT IT8819548A patent/IT1216766B/it active
-
1989
- 1989-02-09 EP EP89830046A patent/EP0330624A2/fr not_active Withdrawn
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0439440A1 (fr) * | 1990-01-23 | 1991-07-31 | Benedetto Bobbio | Dispositif électromagnétique modulaire commandé par ordinateur pour la sélection de fils de chaîne pour le tissage des tissus façonnés |
GB2247694A (en) * | 1990-09-07 | 1992-03-11 | Mayer Textilmaschf | Electromagnetic jacquard control device |
GB2247694B (en) * | 1990-09-07 | 1994-04-06 | Mayer Textilmaschf | Electromagnetically operating jacquard control device |
EP0556165A1 (fr) * | 1992-02-12 | 1993-08-18 | Tecnotessile Centro Di Ricerche S.R.L. | Dispositif de sélection et de commande des moyens de déplacement des fils de chaîne, individuellement |
US5794665A (en) * | 1993-10-19 | 1998-08-18 | Grosse Webereimaschinen Gmbh | Jacquard machine hook selecting device driven by a bistable element |
US5671784A (en) * | 1995-01-17 | 1997-09-30 | N.V. Michael Van De Wiele | Three-position open-shed jacquard machine |
GB2312440A (en) * | 1996-04-26 | 1997-10-29 | Scapa Group Plc | Jacquard mechanism |
US5911247A (en) * | 1996-04-26 | 1999-06-15 | Scapa Group Plc | Jacquard mechanism for creating a shed in a loom |
KR970075007A (ko) * | 1996-05-08 | 1997-12-10 | 아이언 미카엘 헤리스 | 헬드 제어 메카니즘 |
US6102079A (en) * | 1996-12-19 | 2000-08-15 | Scapa Group Plc | Visual diagnostic system for a jacquard machine |
WO1999013144A1 (fr) * | 1997-09-09 | 1999-03-18 | Bonas Machine Company Limited | Ensemble de transmission d'entrainement |
US6289755B1 (en) | 1997-09-09 | 2001-09-18 | Bonas Machine Company Limited | Drive transmission assembly |
Also Published As
Publication number | Publication date |
---|---|
IT8819548A0 (it) | 1988-02-15 |
IT1216766B (it) | 1990-03-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH DE ES FR GB GR LI NL SE |
|
18W | Application withdrawn |
Withdrawal date: 19910128 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
R18W | Application withdrawn (corrected) |
Effective date: 19910128 |