EP0811712B1 - Pince-fil pour griffe d'amenée et griffe d'amenée avec un tel pince-fil - Google Patents

Pince-fil pour griffe d'amenée et griffe d'amenée avec un tel pince-fil Download PDF

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Publication number
EP0811712B1
EP0811712B1 EP19960810374 EP96810374A EP0811712B1 EP 0811712 B1 EP0811712 B1 EP 0811712B1 EP 19960810374 EP19960810374 EP 19960810374 EP 96810374 A EP96810374 A EP 96810374A EP 0811712 B1 EP0811712 B1 EP 0811712B1
Authority
EP
European Patent Office
Prior art keywords
thread
deflection
clamp
thread clamp
holding member
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
EP19960810374
Other languages
German (de)
English (en)
Other versions
EP0811712A1 (fr
Inventor
Franco Bianchi
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.)
Itema Switzerland Ltd
Original Assignee
Sulzer Textil AG
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 Sulzer Textil AG filed Critical Sulzer Textil AG
Priority to DE59604891T priority Critical patent/DE59604891D1/de
Priority to EP19960810374 priority patent/EP0811712B1/fr
Priority to JP10137097A priority patent/JP4071844B2/ja
Publication of EP0811712A1 publication Critical patent/EP0811712A1/fr
Application granted granted Critical
Publication of EP0811712B1 publication Critical patent/EP0811712B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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

Definitions

  • the invention relates to a thread clamp for a rapier gripper according to the preamble of claim 1 and a rapier weaving machine with rapier gripper.
  • Such thread clamps are known from EP-A-624 671.
  • the thread clamp contains a first holding member and a needle-shaped second holding member.
  • the first and second holding members are assigned to one another in such a way that a clamping gap with a curved cross-sectional shape is formed between them.
  • the clamping gap has a continuously increasing cross-sectional contour and constant width or decreasing width in the direction in which the thread is taken up.
  • the thread clamp has the disadvantage that on hair-fine weft threads with a smooth surface, the clamping area leaves pressure marks on the weft thread.
  • the invention as characterized in the claims solves the problem of improving the known thread clamp in order to remedy the deficiency mentioned.
  • the longitudinal arrangement of the deflecting member in the clamping area creates additional deflecting points, which increases the looping length and a additional frictional contact is achieved, so that the weft thread can be held with a lower overall clamping force.
  • a gripper with thread clamp is characterized by the features of claim 8.
  • the gripper 1 shows a rapier gripper with a rapier head 1 and a known thread clamp 2, in which a weft thread 3 is held.
  • the thread clamp 2 is mounted on the hook head 1.
  • the gripper head 1 is attached to a gripper belt 4.
  • This illustration shows the rapier gripper in a position during the insertion process in which the weft thread 3 has been gripped. It is pointed out that the bringer grippers according to FIGS. 4 and 7 are shown in the same position.
  • the thread clamp essentially consists of a first holding member 11, a second holding member 12, a retaining member 13, a sleeve 14, a strip-shaped spring-elastic deflection element 15, a guide body 16 and a two-armed lever 17.
  • the first holding member 11 is an elongated body with a portion 18 formed at one end, a guide portion 19 spaced from the portion 18 is formed on the body 11 and a holding section 20 which is tapered toward the other end of the body 11.
  • a shoulder 21 is formed on the holding section 20, which forms a stop for the weft thread and prevents the weft thread from being pulled through in the longitudinal direction of the thread clamp.
  • a section 22 is formed in section 18, into which the second holding member 12 can be inserted at one end.
  • the guide section 19 has a recess 23 into which the second holding member 12 can be inserted.
  • a trough-shaped recess 24 which runs towards the end of the body 11, is formed, above which the second holding member 2 comes to rest.
  • the second holding member 12 is needle-shaped with a circular cross section and has a pin 25.
  • the sleeve 14 has a through hole 26.
  • the retaining element is a leaf spring 13 which has a through hole 27 with a countersink and an elongated hole 28.
  • the deflecting member 15 has two through bores 30, 31 which are formed in an end section or in a shoulder 32.
  • the other end section 33 is wedge-shaped, the tip forming the free end and a guide surface 34 being formed.
  • the surface 35 between the wedge-shaped end section 33 and the shoulder 32 is designed as a deflection surface with a slight slope.
  • the edges of the guide surface and the deflecting surface are advantageously rounded.
  • the guide body 16 is a hollow body which has a guide section 36 for the weft thread at one end. Furthermore, two through holes 37 are provided in the guide body 16.
  • the second holding member 12 is mounted at one end in the bore 22 serving as a bearing point in section 18, laterally guided and supported in the recess 23 serving as a bearing point and arranged at a distance from the inner surface of the trough-shaped recess 24.
  • a gap 41 is formed, which is delimited on the one hand by the inner surface 42 of the trough-shaped recess 24 and on the other hand by the outer surface 43 of the needle 2.
  • the gap 41 has a curved cross-sectional shape with a constant width in the direction in which the thread is taken up and a continuously increasing cross-sectional contour.
  • the gap width is at least 0.005 mm.
  • This configuration of the trough-shaped recess 24 increases the wrap through the weft thread to be drawn in (not shown) and consequently the surface friction.
  • the second holding member 12 is mounted on the first holding member by means of the leaf spring 13, the sleeve 24 and a screw.
  • the second holding member 12 has a bent section 38 at the free end, so that an essentially V-shaped inlet gap 39 is formed when the holding member is mounted.
  • the deflecting member 15 is arranged adjacent to the longitudinal side of the first holding member 11 such that a free space is formed between the tip of the deflecting member 15 and the free end of the holding section 20 of the first holding member 12.
  • the guide body 16 is in contact Arranged on the deflection member 15 so that the guide section 36 comes to rest in the area of the V-shaped inlet gap 39 or projects beyond it.
  • the deflection member 15 and the guide body 16 are fastened to the first holding member 11 by means of screws 40 (FIG. 4).
  • the weft thread held at one end 51 is introduced into the inlet gap 39 of the thread clamp by the guide section 52 on the rapier head 1 by the linear movement of the rapier gripper. Because the weft thread is held, the weft thread is further drawn into the thread clamp and then runs approximately as shown in FIG. 5. If the holding force caused in the thread clamp reaches a certain value, the holding of the weft end 51 is released and the weft thread 3 is inserted into the shed (not shown) by the rapier gripper (FIG. 4).
  • a section 53 of the weft thread lies in the gap 41 (FIG. 3) and wraps around the second holding member 12.
  • the gap 41 has a constant width and increasing cross-sectional contour in the receiving direction. With this formation of the gap 41, the surface friction and consequently the holding force will increase with increasing depth of penetration of the weft thread.
  • a first deflection point 54 of the weft thread is deflected by the deflection element 15 and finally a second deflection point 55 by the Guide body 16 created. Because the deflection points 54, 55 are at different levels, the weft thread 3 is essentially S-shaped and the loop length is greater. It is essential to the invention that the vertical thread section lies in the S-shaped thread path between the side surfaces of the resilient deflection member 15 and the guide body 16.
  • the thread clamp shown in Fig. 6 has the same structure.
  • an essentially strip-shaped insert 61 is provided in order to form a clamping point for the weft thread 3 which, by selecting different heights, results in a different clamping effect for this easily replaceable part.
  • the insert 61 is provided with a through hole 62 at one end and has an extension 63 in which a through hole 64 is formed.
  • the other end portion 65 of the insert tapers off.
  • the surface opposite the extension 63 and starting from the tip is designed as a curved deflection surface 66 with a rounded surface.
  • FIG. 8 shows, the course of the weft thread 3 is essentially the same as in FIG. 5.
  • an additional clamping point is provided, which is formed from the deflection element 15 and the insert 61.
  • the weft thread is between the deflection element 15 and the Insert 61 guided, wherein the inlet gap formed by sections 34 and 65 enables this insertion.
  • Dumlenkorgan 15 is elastically deformed by the weft thread 3 and therefore exerts a holding force on the weft thread 3 corresponding to the thread thickness.
  • the thread clamp contains a first holding member 11 and a second holding member 12, which form a clamping area and a retaining member 13 for the second holding member, a deflection member 15 and a guide body 16.
  • the deflection member 15 is arranged between the guide body and the first holding member and together with the guide body on screwed first retaining member.
  • the deflection element creates additional deflection points and an additional clamping zone, so that additional frictional contact is achieved and consequently the weft thread can be held with an overall lower clamping force.

Landscapes

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

Claims (8)

  1. Pince-fil pour une griffe d'amenée d'une machine à tisser à pinces, ledit pince-fil présentant un premier organe de retenue (11) avec un évidement (24) et un deuxième organe de retenue (12) réalisé en forme d'aiguille, entre lesquels existe une fente de serrage (41) d'une forme courbée en section transversale pour tenir le fil, la fente de serrage présentant dans la direction de réception du fil un contour continuellement croissant en section transversale et une largeur constante ou largeur décroissante, caractérisé en ce qu'un organe de renvoi (15) est disposé au côté de la longueur du premier organe de retenue (11) pour former au voisinage de l'évidement (24) un premier emplacement de renvoi (54) pour le fil (3), et en ce qu'un corps de guidage (16)
       est disposé parallèlement à l'organe de renvoi (15) pour former un deuxième emplacement de renvoi (55) pour le fil (3), où le premier et le deuxième emplacement de renvoi (54, 55) se situent à un niveau diffèrent pour obtenir un renvoi du fil sensiblement en forme de S et pour former entre le premier et le deuxième emplacement de renvoi (54, 55) un tronçon de serrage pour le fil (3).
  2. Pince-fil selon la revendication 1, caractérisé en ce qu'un insert (61) peut être placé entre l'organe de renvoi (15) et le corps de guidage (16) pour modifier !a zone de serrage du fil (3).
  3. Pince-fil selon l'une des revendications 1 ou 2, caractérisé en ce que l'organe de renvoi (15) est réalisé en un matériau élastique, notamment en une tôle d'acier à ressort, et est réalisé sensiblement en forme de bande.
  4. Pince-fil selon l'une des revendications 1 à 3, caractérisé en ce que le corps de guidage (16) est réalisé en tôle.
  5. Pince-fil selon l'une des revendications 1 à 4, caractérisé en ce que l'organe de renvoi élastique (15) et le corps de guidage (16) sont fixés au premier organe de retenue (11).
  6. Pince-fil selon l'une des revendications 2 à 4, caractérisé en ce que l'organe de renvoi (15), l'insert (61) et le corps de guidage (16) sont fixés au premier organe de retenue (11), et que le premier organe de retenue (11) présente un tronçon de retenue (20) qui est effilé dans la direction vers le côté d'entrée de fil pour créer entre le tronçon de retenue et l'organe de renvoi un espace libre.
  7. Griffe d'amenée avec une tête de pince (1) et avec un pince-fil (2) selon l'une des revendications 1 à 6, caractérisée en ce que le pince-fil (2) est fixé par des vis à la tête de pince de telle sorte que le pince-fil est disposé sur le côté de la tête de pince orienté vers la pointe de foule.
  8. Machine à tisser à pinces avec une griffe d'amenée selon la revendication 8.
EP19960810374 1996-06-07 1996-06-07 Pince-fil pour griffe d'amenée et griffe d'amenée avec un tel pince-fil Expired - Lifetime EP0811712B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE59604891T DE59604891D1 (de) 1996-06-07 1996-06-07 Fadenklemme für einen Bringergreifer und Bringergreifer mit Fadenklemme
EP19960810374 EP0811712B1 (fr) 1996-06-07 1996-06-07 Pince-fil pour griffe d'amenée et griffe d'amenée avec un tel pince-fil
JP10137097A JP4071844B2 (ja) 1996-06-07 1997-04-18 レピアに使用する糸クランプ、糸クランプを有するレピア及びレピア織機

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19960810374 EP0811712B1 (fr) 1996-06-07 1996-06-07 Pince-fil pour griffe d'amenée et griffe d'amenée avec un tel pince-fil

Publications (2)

Publication Number Publication Date
EP0811712A1 EP0811712A1 (fr) 1997-12-10
EP0811712B1 true EP0811712B1 (fr) 2000-04-05

Family

ID=8225627

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19960810374 Expired - Lifetime EP0811712B1 (fr) 1996-06-07 1996-06-07 Pince-fil pour griffe d'amenée et griffe d'amenée avec un tel pince-fil

Country Status (3)

Country Link
EP (1) EP0811712B1 (fr)
JP (1) JP4071844B2 (fr)
DE (1) DE59604891D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19828478C1 (de) * 1998-06-26 2000-03-16 Jaeger Emil Gmbh Co Kg Geber-Greiferkopf mit Haltevorsprung für Schußfäden
EP1806443B1 (fr) * 2006-01-06 2009-02-11 Sultex AG Pince d'amenée pour métier à tisser à pince
CN107587243B (zh) * 2017-10-13 2023-05-02 浙江巨剑纺织机械有限公司 一种适应用于多种纱线的剑杆织机送纬剑头

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2447986B1 (fr) * 1979-01-31 1986-06-20 Dewas Raymond Perfectionnements aux insereurs de trame pour machines a tisser
BE902141A (nl) * 1985-04-09 1985-10-09 Picanol Nv Verbeterde grijpers voor weefmachines.
ES2012386B3 (es) * 1986-06-03 1990-03-16 Picanol Nv Pinza de alimentacion para telares.
DE59010104D1 (de) * 1990-02-05 1996-03-14 Rueti Ag Maschf Bringergreifer für Greiferwebmaschinen
DE59208612D1 (de) * 1992-08-25 1997-07-17 Gividi Italia Spa Fadenklemme für einen Bringergreifer und Greiferwebmaschine mit Fadenklemme
DE59306886D1 (de) * 1993-05-12 1997-08-14 Rueti Ag Maschf Fadenhalter für einen Bringergreifer und Greiferwebmaschine mit Fadenhalter

Also Published As

Publication number Publication date
DE59604891D1 (de) 2000-05-11
JP4071844B2 (ja) 2008-04-02
EP0811712A1 (fr) 1997-12-10
JPH1053935A (ja) 1998-02-24

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