EP0566506B1 - Vorrichtung zum Hin- und Herbewegen der Hubmesser bei schweren Geschlossenfachschaftmaschinen - Google Patents

Vorrichtung zum Hin- und Herbewegen der Hubmesser bei schweren Geschlossenfachschaftmaschinen Download PDF

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Publication number
EP0566506B1
EP0566506B1 EP93420156A EP93420156A EP0566506B1 EP 0566506 B1 EP0566506 B1 EP 0566506B1 EP 93420156 A EP93420156 A EP 93420156A EP 93420156 A EP93420156 A EP 93420156A EP 0566506 B1 EP0566506 B1 EP 0566506B1
Authority
EP
European Patent Office
Prior art keywords
knives
drums
dobby
reciprocating
heavy
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
Application number
EP93420156A
Other languages
English (en)
French (fr)
Other versions
EP0566506A1 (de
Inventor
Siegmund Horst Tremer
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.)
Staeubli GmbH
Original Assignee
Staeubli und Trumpelt GmbH Maschinenfabrik
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 Staeubli und Trumpelt GmbH Maschinenfabrik filed Critical Staeubli und Trumpelt GmbH Maschinenfabrik
Publication of EP0566506A1 publication Critical patent/EP0566506A1/de
Application granted granted Critical
Publication of EP0566506B1 publication Critical patent/EP0566506B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D03C1/18—Knives; Knife frames
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C1/00—Dobbies
    • D03C1/10—Centre-shed dobbies, i.e. shed formed by lifting some threads and lowering the others from central shed-closed position

Definitions

  • the present invention relates to heavy dobbies used for training the crowd on very large weaving machines, of the kind in particular of those used for the manufacture of tubular fabrics suitable for the production of felts or dry endless filters for pulp industry.
  • each of the heald frames CL mounted on the weaving machine is connected by a connecting rod 1 to a corresponding oscillating lever 2, articulated at 2 a on the fixed frame; opposite this point 2 a , each lever 2, provided with a stop 2 b , supports a double tilting hook 3 which is pivotally controlled by pushers of the dobby reading mechanism in order to selectively engage with either of two actuating knives 4, which, suitably guided horizontally, are controlled to move alternately in unison in opposite directions.
  • the mechanism for the alternating control of the two knives 4 comprises, at each of the opposite ends thereof, a link 5 articulated on the one hand to one of said knives, on the other hand to a beam 6 capable of oscillating around d a support axis 7.
  • Each of the two flails 6 is equipped with two rollers 6 a and 6 b which roll on the tracks 8 a and 8 b of an additional cam 8 wedged on a shaft 8 c , driven in continuous rotation, through a transmission shown schematically in 9, by the engine of the machine matching weave.
  • the invention essentially consists in providing on each side of the actuating knives two drums rotating in synchronism, which are oriented parallel to the direction of alternating movement of said knives and whose periphery is hollowed out by two grooves with corrugated profiles. reversed which cooperate with the ends of each of the knives, so that the rotation of these drums ensures desmodromically the alternating movement of said knives in opposite directions.
  • fig. 1 schematically illustrates the general arrangement of a dobby with closed pitch of the conventional type.
  • Fig. 2 is a perspective view illustrating the arrangement of a dobby established in accordance with the present invention.
  • Fig. 3 is a detail section illustrating the cooperation of the drums and the ends of the knives.
  • the reference 11 designates the two reciprocating knives which, in the conventional way, are intended to cooperate selectively with the double tilting hook 13 pivotally mounted at the upper end of each of the oscillating levers 14 connected by a connecting rod assembly 15 to the corresponding heald frame. It is on these hooks 13 that the pushers (not shown) of the usual dobby reading mechanism act, in the manner which has been described above.
  • the invention uses two drums 16 carried by shafts 17 oriented transversely to the axis of said knives, that is to say parallel to the direction of movement to be imparted to these last.
  • the two shafts 17 are connected to each other by a toothed belt 18 associated with two corresponding pulleys 19 and one of these shafts extends axially at 17 'to be kinematically linked to the shaft (not shown) of the weaving machine controlled by the envisaged dobby, or that of an independent motor.
  • Each drum 16 is hollowed out by two grooves 16 a inside each of which is engaged a roller 12 (fig. 3) mounted idly on a stud 11 a , provided axially at each of the ends of the knives 11. It is easily understood that by means of an appropriate corrugated profile of the grooves 16 a and a suitable offset of the latter, the rotation of the drums 16 will impart to the knives 11, introduced between horizontal guides shown diagrammatically at 20, the desired alternative movement.
  • each knife takes place gradually, without sudden jerk. Furthermore and above all, the knives 11 are directly connected to the profile of the grooves 16 has drums 16, without any intermediate articulation; the movement is thus likely to be of perfect quality, absolutely unchanging in time.
  • the dobby according to the invention can thus operate at very high working speeds, without parasitic vibrations and without risks of weaving defect. It will also be observed that its structure is more compact and more economical than traditional structures.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)

Claims (2)

  1. Schwere Geschlossenfachschaftmaschine von der Art, die zwei Betätigungsmesser (11) umfaßt, die eine entgegengesetzte Hin- und Herbewegung ausführen, um selektiv mit einem Doppelkipphaken (13) zusammenzuwirken, getragen durch jeden der an den Schaftrahmen (CL) der entsprechenden Webmaschine festgemachten Kipphebeln (14)
    dadurch gekennzeichnet,
    daß sie zwei synschron drehende Trommeln (16) umfaßt, die im wesentlichen parallel zu der Bahn der Messer (11) ausgerichtet sind und in deren Umfang Nuten (16a) mit inversen bzw. spiegelbildlichen wellenförmigen Profilen eingearbeitet sind, in deren Inneres Führungsstifte (11a) eingreifen, die axial am Ende jedes Messers vorgesehen sind.
  2. Schaftmaschine nach Anspruch 1, dadurch gekennzeichnet, daß der Synchronantrieb der beiden Trommeln (16) sichergestellt wird mit Hilfe einer Transmission durch Zahnriemen und Zahnriemenscheibe 18-19), durch Kette oder durch Zahnräder.
EP93420156A 1992-04-14 1993-04-13 Vorrichtung zum Hin- und Herbewegen der Hubmesser bei schweren Geschlossenfachschaftmaschinen Expired - Lifetime EP0566506B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9204880 1992-04-14
FR9204880A FR2689913A1 (fr) 1992-04-14 1992-04-14 Mécanisme pour la commande alternative des couteaux dans les ratières lourdes du type à pas fermé.

Publications (2)

Publication Number Publication Date
EP0566506A1 EP0566506A1 (de) 1993-10-20
EP0566506B1 true EP0566506B1 (de) 1996-12-27

Family

ID=9429086

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93420156A Expired - Lifetime EP0566506B1 (de) 1992-04-14 1993-04-13 Vorrichtung zum Hin- und Herbewegen der Hubmesser bei schweren Geschlossenfachschaftmaschinen

Country Status (6)

Country Link
US (1) US5309949A (de)
EP (1) EP0566506B1 (de)
JP (1) JP3264032B2 (de)
CZ (1) CZ61193A3 (de)
DE (1) DE69306848T2 (de)
FR (1) FR2689913A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9414192U1 (de) 1994-09-01 1994-10-27 Stäubli & Trumpelt GmbH, 95448 Bayreuth Fachbildungsvorrichtung
DE19804041B4 (de) * 1997-02-06 2005-10-06 Texo Ab Dobby zur Steuerung der Bewegungen der Schaftrahmen eines Webautomaten
SE508238C2 (sv) * 1997-02-06 1998-09-14 Texo Ab Skaftmaskin för att i vävmaskin styra skaftramarnas rörelser
DE19861000B4 (de) * 1997-02-06 2006-11-02 Texo Ab Dobby zur Steuerung der Bewegungen der Schäfte eines Webautomaten
US7600282B2 (en) 2003-02-10 2009-10-13 Niclas Grunewald Drive protection device
DE10343377B3 (de) † 2003-09-17 2005-04-28 Groz Beckert Kg Schaftantrieb für Webmaschinenschäfte
US20070284422A1 (en) * 2006-06-09 2007-12-13 Nottingham Spirk Design Associates, Inc. Reconfigurable storage box and cutter

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE32559C (de) * ch. J. kane und R. E. lester in New-York Geschirr für mechanische Webstühle
GB592892A (en) * 1944-12-18 1947-10-02 Peter Walker Blackburn Ltd Improvements relating to loom jacquards
DE39816C (de) * J. A. S. BlER-NATZKI in Hamburg und R. E. LESTER in New-York Webstuhlgeschirr
DE915800C (de) * 1952-07-31 1954-07-29 Brock Soehne Maschinenfabrik W Geschlossenfachschaftmaschine
CH402759A (it) * 1962-12-15 1965-11-15 Brevitex Ets Exploit Ratiera adatta specialmente per telai veloci
AT262171B (de) * 1965-04-06 1968-06-10 Elitex Zavody Textilniho Schnellauf-Doppelhubschaftmaschine mit gegenläufig bewegten Platinen
CH653385A5 (en) * 1981-05-15 1985-12-31 Setafin Sa Heald-frame drive on a circular weaving machine
BE1001921A3 (nl) * 1988-12-27 1990-04-10 Picanol Nv Inrichting voor het aandrijven van weefkaders bij weefmachines.

Also Published As

Publication number Publication date
JP3264032B2 (ja) 2002-03-11
CZ61193A3 (en) 1993-11-17
JPH0617342A (ja) 1994-01-25
DE69306848T2 (de) 1997-05-07
EP0566506A1 (de) 1993-10-20
FR2689913A1 (fr) 1993-10-15
US5309949A (en) 1994-05-10
FR2689913B1 (de) 1994-07-13
DE69306848D1 (de) 1997-02-06

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