EP0330624A2 - Doppelfachwebmaschine mit verbessertem Hakensteuerungssystem - Google Patents

Doppelfachwebmaschine mit verbessertem Hakensteuerungssystem Download PDF

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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Withdrawn
Application number
EP89830046A
Other languages
English (en)
French (fr)
Inventor
Benedetto Bobbio
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0330624A2 publication Critical patent/EP0330624A2/de
Withdrawn legal-status Critical Current

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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
    • D03C3/20—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)
EP89830046A 1988-02-15 1989-02-09 Doppelfachwebmaschine mit verbessertem Hakensteuerungssystem Withdrawn EP0330624A2 (de)

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 (de) 1989-08-30

Family

ID=11158949

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89830046A Withdrawn EP0330624A2 (de) 1988-02-15 1989-02-09 Doppelfachwebmaschine mit verbessertem Hakensteuerungssystem

Country Status (2)

Country Link
EP (1) EP0330624A2 (de)
IT (1) IT1216766B (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0439440A1 (de) * 1990-01-23 1991-07-31 Benedetto Bobbio Elektromagnetische modulare, computergesteuerte Kettfadensteuervorrichtung für die Bildweberei
GB2247694A (en) * 1990-09-07 1992-03-11 Mayer Textilmaschf Electromagnetic jacquard control device
EP0556165A1 (de) * 1992-02-12 1993-08-18 Tecnotessile Centro Di Ricerche S.R.L. Einzellitzenwahl- und Steuervorrichtung
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 (en) * 1997-09-09 1999-03-18 Bonas Machine Company Limited Drive transmission assembly
US6102079A (en) * 1996-12-19 2000-08-15 Scapa Group Plc Visual diagnostic system for a jacquard machine

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0439440A1 (de) * 1990-01-23 1991-07-31 Benedetto Bobbio Elektromagnetische modulare, computergesteuerte Kettfadensteuervorrichtung für die Bildweberei
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 (de) * 1992-02-12 1993-08-18 Tecnotessile Centro Di Ricerche S.R.L. Einzellitzenwahl- und Steuervorrichtung
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 (en) * 1997-09-09 1999-03-18 Bonas Machine Company Limited Drive transmission assembly
US6289755B1 (en) 1997-09-09 2001-09-18 Bonas Machine Company Limited Drive transmission assembly

Also Published As

Publication number Publication date
IT1216766B (it) 1990-03-08
IT8819548A0 (it) 1988-02-15

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