EP0274971A1 - Negative Schaftmaschinen mit Pendelschwinger - Google Patents

Negative Schaftmaschinen mit Pendelschwinger Download PDF

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Publication number
EP0274971A1
EP0274971A1 EP87420347A EP87420347A EP0274971A1 EP 0274971 A1 EP0274971 A1 EP 0274971A1 EP 87420347 A EP87420347 A EP 87420347A EP 87420347 A EP87420347 A EP 87420347A EP 0274971 A1 EP0274971 A1 EP 0274971A1
Authority
EP
European Patent Office
Prior art keywords
oscillating
crosspieces
negative dobby
levers
hooks
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.)
Ceased
Application number
EP87420347A
Other languages
English (en)
French (fr)
Inventor
Joseph Palau
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.)
Staubli Faverges SCA
Original Assignee
Staubli Faverges SCA
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 Staubli Faverges SCA filed Critical Staubli Faverges SCA
Publication of EP0274971A1 publication Critical patent/EP0274971A1/de
Ceased 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
    • D03C1/00—Dobbies
    • D03C1/14—Features common to dobbies of different types
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C1/00—Dobbies
    • D03C1/14—Features common to dobbies of different types
    • D03C1/144—Features common to dobbies of different types linking to the heald frame

Definitions

  • each heald frame is operated against springs or other elastic means which tend to return the frame to a determined position.
  • each frame C is coupled by a cable and / or a pulling arm 1 to a suspension lever 2 articulated at 3 on the frame 4 of the dobby.
  • a connecting rod 5 connects each lever 2 to a balance-carrying lever 6, the set of levers 6 being pivotally supported on a common axis 7; this lever 6 is equipped at its free end with a balance 8 which is driven by a cyclic tilting movement around a pivot 9, so that the articulated spout 10 provided at each end of said balance 8 can come to cooperate with a tilting retaining hook 11.
  • the two hooks 11 are controlled by a common reading device 12 of the peg or perforated paper type, this device containing the weaving program for producing the envisaged tissue.
  • a common mechanism comprising two pushers or crosspieces 13 carried by two side plates 14 which pivot on a fixed axis of the frame 4. At least one these two plates 14 is driven by an oscillating movement, for example using an arm 15, the hub 15 a of which is wedged eccentrically on a drive shaft 16.
  • the crosspieces 13 consist of solid bars (see FIG. 2) with square or rectangular section, which come to bear against the face free plane of a heel provided on each spout 10, behind the axis 8 a which ensures the articulated fixing of each of these spouts 10 on its balance 8.
  • the invention essentially consists in giving that at least of the crosspieces 13 which is arranged at the level of the balance-carrying levers 6, an L-shaped cross section, in the manner illustrated in FIGS. 1 and 3.
  • the part or branch of the cross member 13 of FIG. 3 which comes to bear against the flat rear face of the heel of the spout 10 has a thickness and a bulk much smaller than that and that of the cross member 13 according to FIG. 2, while the resistance to bending is provided by the side part or branch which, because of its orientation, has a high moment of inertia to bending and therefore very high rigidity.
  • the invention is capable of being applied with interest to negative dobbies of the Hattersley type, of the kind of that illustrated in FIG. 4, which comprises two crosspieces 23 provided fixed so as to form supports for the rear part traction hooks 24 of the various scales 8 of the machine.
  • These traction hooks 24 are controlled vertically by rods 21 actuated by a reading device 22, so as to come, at the appropriate time depending on the weave of the fabric to be produced, to be placed on the path of oscillating traction members 25 driven by an alternative movement, the hook gripped then being driven to actuate the corresponding balance 8.
  • the operation is thus substantially similar to that described above with reference to FIG. 1, the difference residing in the fact that the movement input is effected at the level of the members 25 and no longer at that of the crosspieces.
  • the invention is also applicable to the Hattersley dobbies in which each balance is provided at its ends with spouts similar to those referenced 10 in FIG. 1, which cooperate with traction hooks carried by an oscillating plate similar to that which carries the members 25 of Figure 4.
  • the fixed lower support crosspiece will advantageously be formed by a piece with an L-shaped section so as to have a high resistance in a reduced size.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP87420347A 1986-12-19 1987-12-18 Negative Schaftmaschinen mit Pendelschwinger Ceased EP0274971A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8618311A FR2608644B1 (fr) 1986-12-19 1986-12-19 Perfectionnements aux ratieres negatives du type a balances oscillantes
FR8618311 1986-12-19

Publications (1)

Publication Number Publication Date
EP0274971A1 true EP0274971A1 (de) 1988-07-20

Family

ID=9342395

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87420347A Ceased EP0274971A1 (de) 1986-12-19 1987-12-18 Negative Schaftmaschinen mit Pendelschwinger

Country Status (4)

Country Link
EP (1) EP0274971A1 (de)
JP (1) JPS63165553A (de)
BR (1) BR8705735A (de)
FR (1) FR2608644B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0393750A2 (de) * 1989-04-18 1990-10-24 NUOVOPIGNONE INDUSTRIE MECCANICHE E FONDERIA S.p.A. Haupthebel für schnell laufende Drehschaftmaschinen
US5143124A (en) * 1990-05-16 1992-09-01 S. A. Des Etablissements Staubli (France) Cable wear pad for dobby shedding lever

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2392147A1 (fr) * 1977-05-27 1978-12-22 Staubli Sa Ets Perfectionnements aux ratieres a double leve a balances et crochets de retenue
US4527597A (en) * 1981-06-30 1985-07-09 Murata Kikai Kabushiki Kaisha Dobby

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2392147A1 (fr) * 1977-05-27 1978-12-22 Staubli Sa Ets Perfectionnements aux ratieres a double leve a balances et crochets de retenue
US4527597A (en) * 1981-06-30 1985-07-09 Murata Kikai Kabushiki Kaisha Dobby

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0393750A2 (de) * 1989-04-18 1990-10-24 NUOVOPIGNONE INDUSTRIE MECCANICHE E FONDERIA S.p.A. Haupthebel für schnell laufende Drehschaftmaschinen
US5044407A (en) * 1989-04-18 1991-09-03 Nuovopignone Industrie Meccaniche E Fonderia S.P.A. Main lever for a rotary dobby operating at high speed
EP0393750B1 (de) * 1989-04-18 1993-09-01 NUOVOPIGNONE INDUSTRIE MECCANICHE E FONDERIA S.p.A. Haupthebel für schnell laufende Drehschaftmaschinen
US5143124A (en) * 1990-05-16 1992-09-01 S. A. Des Etablissements Staubli (France) Cable wear pad for dobby shedding lever

Also Published As

Publication number Publication date
JPS63165553A (ja) 1988-07-08
FR2608644A1 (fr) 1988-06-24
BR8705735A (pt) 1988-07-19
FR2608644B1 (fr) 1989-03-31

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