EP0071519A2 - Abnehmergreifer zum Einführen der Schlussfäden in das Webfach einer schützenlosen Webmaschine - Google Patents

Abnehmergreifer zum Einführen der Schlussfäden in das Webfach einer schützenlosen Webmaschine Download PDF

Info

Publication number: EP0071519A2
Authority: EP; European Patent Office
Prior art keywords: hook; plane; wire; clamp; facets
Prior art date: 1981-07-28
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

Application number

EP82401356A

Other languages

English (en)

French (fr)

Other versions

EP0071519A3 (en

EP0071519B1 (de

Inventor

Pascal Scherrer

Yves Juillard

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.)

Alsacienne de Constructions Mecaniques SA

Original Assignee

Alsacienne de Constructions Mecaniques SA

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.)

1981-07-28

Filing date

1982-07-21

Publication date

1983-02-09

1982-07-21 Application filed by Alsacienne de Constructions Mecaniques SA filed Critical Alsacienne de Constructions Mecaniques SA

1983-02-09 Publication of EP0071519A2 publication Critical patent/EP0071519A2/de

1983-06-01 Publication of EP0071519A3 publication Critical patent/EP0071519A3/fr

1985-06-12 Application granted granted Critical

1985-06-12 Publication of EP0071519B1 publication Critical patent/EP0071519B1/de

Status Expired legal-status Critical Current

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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
- D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick
- D03D47/20—Constructional features of the thread-engaging device on the inserters
- D03D47/23—Thread grippers
- D03D47/236—Drawing grippers

Definitions

the present invention relates to the textile industry and more particularly to the field of shuttleless weaving machines.
a well-known means of inserting the weft into the crowd of a weaving machine of this type consists in using a pair of needles, rigid or flexible, animated back and forth in opposite directions between the selvedges and , generally, the middle of the width.
Each needle carries a clamp, one of which, fixed to the so-called entry or supply needle, grasps the end of the pick to be inserted in the vicinity of one of the selvedges and introduces it into the crowd.
the exit or draw needle which, by moving back, carries it to the other edge.
the invention relates more precisely to an improvement to the clamp, called the outlet clamp, which is fixed to the end of the outlet needle.
Patent DE-20 61 194 describes an improved output clamp compared to the previous embodiments.
the wire is pinched between a fixed part, in the form of a hook, integral with the clamp body, and a movable central part, with controlled opening, the end of which engages in the opening of the hook to retain the wire.
the wire is pinched between two substantially vertical parallel facets; there is a double wedge effect, so that the wire blocks the clamp.
the clamp is opened by pressing on the central part so that it moves away from the hook, but if the body of the clamp which carries the hook is not sufficiently rigid, it follows the mobile part and the opening is not made. To avoid this incident, you need a massive pliers body, therefore heavy.
the object of the present invention is to remedy these drawbacks by making a light output clamp, which releases the wire in a rapid and reliable manner.
the clamping of the clamp by the wire is avoided by pinching the latter between facets inclined relative to the plane of displacement of the hook, the latter no longer being carried by the clamp body but by the movable part, which allows to benefit from the pressure of the wire on the hook to accentuate the force which causes its closure.
the invention consists of an output clamp for inserting the weft in a shuttleless weaving machine in which the thread is pinched between a fixed part and a mobile part, one of these parts taking the form of a hook, characterized in that the hook is carried by the mobile part and the two facets between which the wire is pinched are inclined at a certain angle relative to the plane of movement of the mobile part.
the clamp forming the subject of the present invention consists of two parts: the body 1, fixed, secured to the needle 2 and a movable part 3. These two parts are linked in rotation by an axis 4 which passes through the body 1 and which is riveted in 5 to retain part 3.
the clamp body 1 is made up of a part affecting it in the form of a square which matches the internal walls 9 and 10 of the needle 2 (FIG. 3).
the two components 1 ′ and 2 are joined by screws 11 and 11 ′ but all other custom systems such as bonding, riveting, etc. can be used.
a leaf spring 12, the role of which will be specified below, is fixed to part 1 by screws 13.
the clamp body 1 ends in a part 15 which is the active part for pinching the wire and which cooperates with a hook 14 carried by the movable part 3.
the clamp moves in directions 6-6 ′, as shown in FIG. 1 between the comb P and the face F from which the fabric T is formed.
the warp threads 7-7 ′ have also been shown in Figure 1.
the active part 15 of the clamp (FIG. 5) has a longitudinal edge 101, turned towards the face F and an edge 101 'opposite the first and which limits one of the facets 102 for pinching the wire 19.
This pinch facet which cooperates with a corresponding opposite facet 16 provided in the hook 14, has two inclinations: one relative to the longitudinal direction of the clamp which gives the end mity 15 of the part fixes a corner configuration and the other relative to the plane of movement of the mobile part.
the value of this latter inclination is approximately 20 ° (FIG. 4). This value is defined as substantially equal to or greater than the limit angular value allowing the irreversibility of the corner formed in the groove 14 'of the hook 14 by the part 15 and the inserted wire 19.
This angle is a function of the coefficient of friction of the surfaces in contact, that is to say the nature of the material constituting the fixed and movable parts of the clamp and also the nature of the wire.
the connection between the straight facet 103 and the inclined facet 102 is produced by a curve 104 which forms with the corresponding curve of the hook 14 the insertion opening for the wire 19.
the area 104 may have a greater inclination than that of the facet pinch 102 to facilitate the insertion of the largest wires.
the end of the movable part 3 opposite the hook 14 rests on the spring leaf 12. It has a part 17 forming a ramp, followed by a part 18 which is substantially horizontal in the operating position of the clamp.
the clamp which has just been described and which circulates in the crowd with the tip 22 of the hook 14 facing the comb P operates as follows: substantially in the middle of the width, the weft thread 19 brought by an input clamp (not shown) is introduced between the facets 16 and 102, respectively of the movable part 3 and of the fixed part 1.
the stretched strand 19 ′ of the wire 19 which is still connected to the weft reserve (not shown) passes over the hook 14 and contributes to applying it to the fixed facing part, reinforcing the closing of the clamp which is ensured by the spring 12.
a roller fixed relative to the frame of the machine acts progressively on the ramp 17 then presses on the part 18 of the movable part 3 and causes it to tilt against the spring 12 around the axis 4 substantially in a plane perpendicular to the plane of the hook 14, in the direction D indicated by an arrow in FIG. 4.
the hook 14 lifts and releases the wire 19.
the latter is guided between two plastic blocks 20, 21, fixed to the clamp body 1.
the above description applies to the case where the tip 22 of the hook 14 is turned towards the comb side of the weaving machine.
this clamp can also function if it is produced with the point 22 of the hook 14 turned towards the side of the facade.
the plane of the hook 14 it may be advantageous for the plane of the hook 14 to be substantially parallel to the upper ply of the crowd and for the hinge pin 4 to be inclined so that the movable part 3 moves along a plane which is oblique. with respect to a plane perpendicular to the plane of the hook 14.

Landscapes

Engineering & Computer Science (AREA)
Textile Engineering (AREA)
Looms (AREA)

EP82401356A 1981-07-28 1982-07-21 Abnehmergreifer zum Einführen der Schlussfäden in das Webfach einer schützenlosen Webmaschine Expired EP0071519B1 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
FR8114602A FR2510622A1 (fr)	1981-07-28	1981-07-28	Pince de sortie pour l'insertion de la trame dans la foule d'une machine a tisser sans navette
FR8114602		1981-07-28

Publications (3)

Publication Number	Publication Date
EP0071519A2 true EP0071519A2 (de)	1983-02-09
EP0071519A3 EP0071519A3 (en)	1983-06-01
EP0071519B1 EP0071519B1 (de)	1985-06-12

Family

ID=9260909

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP82401356A Expired EP0071519B1 (de)	1981-07-28	1982-07-21	Abnehmergreifer zum Einführen der Schlussfäden in das Webfach einer schützenlosen Webmaschine

Country Status (5)

Country	Link
US (1)	US4542816A (de)
EP (1)	EP0071519B1 (de)
JP (1)	JPS5823939A (de)
DE (1)	DE3264123D1 (de)
FR (1)	FR2510622A1 (de)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR1400421A (fr) *	1964-03-12	1965-05-28		Perfectionnement aux inséreurs de trame pour machines à tisser à alimentation continue
FR2040443A1 (de) *	1969-04-30	1971-01-22	Somet
US3978897A (en) *	1975-06-06	1976-09-07	Rockwell International Corporation	Weft extending carrier
JPS5240659A (en) *	1975-09-24	1977-03-29	Rieter Ag Maschf	Receiving and gripping weft in loom having device for removing weft from bobbin fixed
IT1043118B (it) *	1975-10-03	1980-02-20	Noovopignone S P A	Perfezionamente ai dispositivi di inserzione della trama su telai con riserva di trama immobile
CH625573A5 (en) *	1978-02-28	1981-09-30	Rueti Ag Maschf	Taker gripper for weaving machines with extraction of the weft thread from fixed bobbins

1981
- 1981-07-28 FR FR8114602A patent/FR2510622A1/fr active Granted
1982
- 1982-07-20 US US06/400,125 patent/US4542816A/en not_active Expired - Fee Related
- 1982-07-21 DE DE8282401356T patent/DE3264123D1/de not_active Expired
- 1982-07-21 EP EP82401356A patent/EP0071519B1/de not_active Expired
- 1982-07-26 JP JP57130209A patent/JPS5823939A/ja active Pending

Also Published As

Publication number	Publication date
US4542816A (en)	1985-09-24
DE3264123D1 (en)	1985-07-18
EP0071519A3 (en)	1983-06-01
JPS5823939A (ja)	1983-02-12
FR2510622B1 (de)	1984-04-13
FR2510622A1 (fr)	1983-02-04
EP0071519B1 (de)	1985-06-12

Legal Events

Date	Code	Title	Description
1982-12-10	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
1983-02-09	AK	Designated contracting states	Designated state(s): BE CH DE IT LI
1983-03-29	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1983-06-01	AK	Designated contracting states	Designated state(s): BE CH DE IT LI
1983-06-08	17P	Request for examination filed	Effective date: 19830321
1985-03-04	ITF	It: translation for a ep patent filed
1985-04-12	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1985-06-12	AK	Designated contracting states	Designated state(s): BE CH DE IT LI
1985-07-18	REF	Corresponds to:	Ref document number: 3264123 Country of ref document: DE Date of ref document: 19850718
1986-04-14	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1986-04-14	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1986-06-04	26N	No opposition filed
1990-06-13	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: BE Payment date: 19900613 Year of fee payment: 9
1990-07-31	ITTA	It: last paid annual fee
1990-08-30	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: DE Payment date: 19900830 Year of fee payment: 9
1990-10-25	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: CH Payment date: 19901025 Year of fee payment: 9
1991-07-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: LI Effective date: 19910731 Ref country code: CH Effective date: 19910731 Ref country code: BE Effective date: 19910731
1992-01-31	BERE	Be: lapsed	Owner name: SOC. ALSACIENNE DE CONSTRUCTIONS MECANIQUES DE MU Effective date: 19910731
1992-03-31	REG	Reference to a national code	Ref country code: CH Ref legal event code: PL
1992-04-01	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: DE Effective date: 19920401

Publication	Publication Date	Title
LU83610A1 (fr)	1982-04-14	Pince de propulsion de trame
CH644909A5 (fr)	1984-08-31	Dispositif de formation d'une reserve de fil pour metiers a tisser.
EP0071519A2 (de)	1983-02-09	Abnehmergreifer zum Einführen der Schlussfäden in das Webfach einer schützenlosen Webmaschine
BE1001686A3 (fr)	1990-02-06	Ameliorations dans le systeme de transport de griffe de saisie d'un metier a tisser sans navette.
FR2584745A1 (fr)	1987-01-16	Procede d'insertion des fils de trame dans des metiers a tisser sans navettes, par l'intermediaire de pinces engagees et retractees de la foule et equipees de dispositifs de pincement des fils de trame, et metier a tisser sans navettes pour la mise en oeuvre dudit procede
EP0266286B1 (de)	1991-12-18	Vorrichtung zum Schusseintrag bei schützenlosen Webmaschinen
EP0299553B1 (de)	1991-03-06	Fadenklappe
CH657389A5 (fr)	1986-08-29	Peigne avec confineur incorpore, pour machine a tisser sans navette a insertion de trame pneumatique.
FR2783842A1 (fr)	2000-03-31	Dispositif pour l'insertion du fil de trame
EP0759484B1 (de)	1999-08-04	Vorrichtung zum Eintrag von Schussfaden an einer Greiferwebmaschine
FR2505885A1 (fr)	1982-11-19	Dispositif pour introduire les extremites de fil de trame au bord du tissu dans un metier a tisser sans navette
FR2476696A1 (fr)	1981-08-28	Metier a tisser
FR2553439A1 (fr)	1985-04-19	Dispositif d'actionnement force du mecanisme de coincement d'organes d'insertion de fils de trame dans des machines a tisser sans navette
FR2534602A1 (fr)	1984-04-20	Griffe a duite pour metier a tisser
FR2466550A1 (fr)	1981-04-10	Dispositif de convoyage d'un fil de trame dans une machine a tisser sans navette
BE371001A (de)
FR1310490A (fr)	1962-11-30	Perfectionnements aux métiers à tisser à réserve de trame fixe
BE703531A (de)	1968-02-01
BE833720A (fr)	1976-01-16	Pince de prehension et de transport de fils de trame pour metiers a alimentation en trame continue
FR2465811A1 (fr)	1981-03-27	Dispositif d'emmagasinage de fil de trame d'une machine a tisser
BE551911A (de)
CH654859A5 (fr)	1986-03-14	Dispositif canalisant un courant d'air pour l'insertion de la duite dans la foule d'un metier a tisser.
EP0388336B1 (de)	1992-12-30	Fadenklemmvorrichtungen, montiert auf dem Schussorgan von Webstühlen mit festem Reservefaden
EP0633337B1 (de)	1997-04-23	Klemme für eine Schussfadeneintragvorrichtung einer Webmaschine
BE409649A (de)