EP0290389A2 - Needle cover tape for a needle bed of a flat-bed knitting machine - Google Patents

Needle cover tape for a needle bed of a flat-bed knitting machine Download PDF

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Publication number
EP0290389A2
EP0290389A2 EP88810269A EP88810269A EP0290389A2 EP 0290389 A2 EP0290389 A2 EP 0290389A2 EP 88810269 A EP88810269 A EP 88810269A EP 88810269 A EP88810269 A EP 88810269A EP 0290389 A2 EP0290389 A2 EP 0290389A2
Authority
EP
European Patent Office
Prior art keywords
needle
strip
mortise
bed
needle cover
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
EP88810269A
Other languages
German (de)
French (fr)
Other versions
EP0290389A3 (en
Inventor
Jacques Vaudroz
Pierre Hofstetter
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.)
Edouard Dubied et Cie SA
Original Assignee
Edouard Dubied et Cie 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.)
Filing date
Publication date
Application filed by Edouard Dubied et Cie SA filed Critical Edouard Dubied et Cie SA
Publication of EP0290389A2 publication Critical patent/EP0290389A2/en
Publication of EP0290389A3 publication Critical patent/EP0290389A3/en
Ceased legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/10—Needle beds

Definitions

  • the present invention relates to a needle cover strip of a straight knitting machine needle bed according to the preamble of claim 1.
  • these bands are used to prevent the needles from leaving the bottom of their respective grooves. They are adjusted in their respective mortise. When, after a few months of knitting, packets of hard pressed fill have accumulated in the grooves, under the needle cover band, etc., the extraction of the latter from its mortise becomes extremely painful, even dangerous for the bodily integrity of the operator. In addition, the partitions between neighboring grooves, often very thin, can be bent and damaged when forced to extract the strip.
  • French patent 591,365 shows in its figures 25 and 26 an individual spring per needle.
  • This kind of needle cover opposes the needle that wants to get up than two small contact surfaces that wear out much too quickly.
  • the object of the present invention is to avoid the drawbacks mentioned with a strip, the cross section of which can be reduced when the operator wishes to extract it from its mortise, so that the braking force opposing disassembly practically drops to zero.
  • Bed 1 in fig. 1 is drawn simplified to the extreme, so neither the needles 2, nor the grooves 3 of the needles (fig. 2, 3) are shown. It includes a mortise 4, which is the housing of the needle cover band.
  • FIGS 2 and 3 show the mortise 4, with its base 41 and its two inclined sides 42, 43.
  • the needle cover band 5 comprises a base band 6. This may have its bevelled sides or not, but it must in any case be a little narrower than the adjacent part of the mortise 4, otherwise the object of the invention is not achieved. A play of a few tenths of a millimeter is sufficient.
  • Its base surface 61 is supported on the base 41 of the mortise 4.
  • Its beveled side 71 is supported on the side inclined 42 of the mortise 4.
  • the distance between the holes in the spacers 10, 11 is chosen so that the angle between them and the strips 7, 9 is different from 90 ° when the corresponding faces of the needle cover strip and the mortise 4 are in contact.
  • An angle of e.g. 75 ° is suitable. By forcing a little to enlarge this angle, we obtain a very good pressure on the faces and any play of the strip 5 in its mortise 4 is eliminated.
  • the needle cover strip 5 finally comprises at least one latch 13 which prevents the spacers 11, and by parallelogram effect also the spacers 10, from pivoting towards a smaller angle.
  • the lock 13 therefore makes it possible to maintain the desired pressure between the faces 41, 61 and 42, 71 and 43, 91.
  • the end 131 of the lock 13 is housed in a notch 113 of the spacer 11. It may be cheaper to provide an adjustment of the end 131 of the lock 13 than pushing the precision of the various components.
  • the operator unhooks the bolt 13 by lifting its tip 131, eg by passing a screwdriver in the clearance 132 to pry.
  • the lock 13 is pivotally mounted on the strip 7 by a pivot 12.
  • the needle cover band 5 is longer than the needle field, but shorter than the needle bed 1. This makes it possible to fix a stop block 14 at the two ends 51, 52 of the needle cover strip on needle needle 1 5.
  • the needle fields have a length of 2 meters or more and the needle cover band 5 is advantageously divided into several segments 53, 54, 55, etc. The adjacent ends of the segments 53, 54 ... are cut obliquely as on the known needle cover band segments.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)

Abstract

The needle cover strip (5) comprises a basic strip (6), a first strip (7) with a bevelled flank (71) and a second strip (9) with a bevelled flank (91), the first being fastened to the basic strip (6) and the second being movable on the basic strip. The second strip (9) can be spaced apart from the first (7) by spacers (10) which are connected to said strips (7, 9) by means of pivots (12). Locks keep the strips (7, 9) spaced apart and block the needle cover strip (5) in the mortise (4) of the bed (1). After the locks have been opened, the operator can bring the strips (7, 9) closer to one another so that there is sufficient play between the faces (61, 71, 91) of the needle cover strip (5) and the corresponding faces (41, 42, 43) of the mortise (4). By means of this play, the needle cover strip can be removed from its mortise without any force. <IMAGE>

Description

La présente invention concerne une bande couvre-aiguilles d'une fonture de machine à tricoter rectiligne selon le préambule de la revendication 1.The present invention relates to a needle cover strip of a straight knitting machine needle bed according to the preamble of claim 1.

Dans les machines à tricoter, ces bandes servent à empêcher les aiguilles de quitter le fond de leur rainure respective. Elles sont ajustées dans leur mortaise respective. Lorsque, après quelques mois de tricotage, des paquets de bourre pressée dure se sont accumulés dans les rainures, sous la bande couvre-­aiguilles, etc., l'extraction de cette dernière hors de sa mortaise devient extrêmement pénible, voire dangereuse pour l'intégrité corporelle de l'opérateur. En outre, les cloisons entre rainures voisines, souvent très peu épaisses, peuvent être pliées et endommagées lorsqu'on force pour extraire la bande.In knitting machines, these bands are used to prevent the needles from leaving the bottom of their respective grooves. They are adjusted in their respective mortise. When, after a few months of knitting, packets of hard pressed fill have accumulated in the grooves, under the needle cover band, etc., the extraction of the latter from its mortise becomes extremely painful, even dangerous for the bodily integrity of the operator. In addition, the partitions between neighboring grooves, often very thin, can be bent and damaged when forced to extract the strip.

On a déjà essayé de mettre des ressorts en lieu et place des bandes connues. Le brevet français 591'365 montre dans ses figures 25 et 26 un ressort individuel par aiguille. On pourrait aussi bien penser à un ressort semblable, en tôle ondulée, ou un ressort de section arquée s'étendant sur toute la longueur du champ d'aiguilles.We have already tried to put springs in place of known bands. French patent 591,365 shows in its figures 25 and 26 an individual spring per needle. One might as well think of a similar spring, in corrugated sheet, or a spring of arcuate section extending over the entire length of the field of needles.

Ce genre de couvre-aiguille oppose à l'aiguille qui veut se lever que deux petites surfaces de contact qui s'usent beaucoup trop vite.This kind of needle cover opposes the needle that wants to get up than two small contact surfaces that wear out much too quickly.

Les machines à tricoter industrielles modernes ont des bandes couvre-aiguilles en 2, 3 ou plus de segments. L'effort pour extraire un segment devient proportionnellement plus petit et sans risque pour l'opérateur. Malheureusement, l'effort exercé lors de l'extraction sur les cloisons entre rainures voisines ne diminue pas et le risque d'abîmer la fonture subsiste inchangé.Modern industrial knitting machines have needle tapes in 2, 3 or more segments. The effort to extract a segment becomes proportionally smaller and without risk for the operator. Unfortunately, the force exerted during the extraction on the partitions between neighboring grooves does not decrease and the risk of damaging the needle bed remains unchanged.

Le but de la présente invention est d'éviter les inconvénients cités avec une bande, dont la section peut être diminuée lorsque l'opérateur veut l'extraire de sa mortaise, de sorte que la force de freinage s'opposant au démontage tombe pratiquement à zéro.The object of the present invention is to avoid the drawbacks mentioned with a strip, the cross section of which can be reduced when the operator wishes to extract it from its mortise, so that the braking force opposing disassembly practically drops to zero.

Ce but est atteint avec une bande couvre-aiguilles du genre cité par la caractéristique de la revendication 1.This object is achieved with a needle cover band of the kind mentioned by the characteristic of claim 1.

Le dessin annexé représente, à titre d'exemple, une forme d'exécution de la bande couvre-aiguilles, objet de l'invention.

  • La figure 1 montre de dessus, en échelle réduite, une bande couvre-aiguilles montée dans une fonture.
  • La figure 2 montre une vue de côté de cette bande, montée dans une fonture.
  • La figure 3 montre de dessus une section comprenant un verrou.
The accompanying drawing shows, by way of example, an embodiment of the needle cover band, object of the invention.
  • Figure 1 shows from above, in reduced scale, a needle cover band mounted in a needle bed.
  • Figure 2 shows a side view of this band, mounted in a needle bed.
  • Figure 3 shows from above a section comprising a lock.

La fonture 1 de la fig. 1 est dessinée simplifiée à l'extrême, ainsi ni les aiguilles 2, ni les rainures 3 des aiguilles (fig. 2, 3) ne sont représentées. Elle comprend une mortaise 4, qui est le logement de la bande couvre-aiguilles.Bed 1 in fig. 1 is drawn simplified to the extreme, so neither the needles 2, nor the grooves 3 of the needles (fig. 2, 3) are shown. It includes a mortise 4, which is the housing of the needle cover band.

Les figures 2 et 3 montrent la mortaise 4, avec sa base 41 et ses deux flancs inclinés 42, 43. La bande couvre-aiguilles 5 comprend une bande de base 6. Celle-ci peut avoir ses côtés biseautés ou non, mais elle doit en tous cas être un peu moins large que la partie adjacente de la mortaise 4, autrement le but visé par l'invention n'est pas atteint. Un jeu de quelques dixièmes de millimètre est suffisant. Sa surface de base 61 prend appui sur la base 41 de la mortaise 4. Elle comprend en outre une première bande 7 à flanc biseauté 71, fixée sur la bande de base 6 par des rivets 8. Son flanc biseauté 71 prend appui sur le flanc incliné 42 de la mortaise 4. Elle comprend aussi une deuxième bande 9 à flanc biseauté 91, posée de façon mobile sur la bande de base 6.Figures 2 and 3 show the mortise 4, with its base 41 and its two inclined sides 42, 43. The needle cover band 5 comprises a base band 6. This may have its bevelled sides or not, but it must in any case be a little narrower than the adjacent part of the mortise 4, otherwise the object of the invention is not achieved. A play of a few tenths of a millimeter is sufficient. Its base surface 61 is supported on the base 41 of the mortise 4. It further comprises a first strip 7 with a bevelled side 71, fixed to the base strip 6 by rivets 8. Its beveled side 71 is supported on the side inclined 42 of the mortise 4. It also comprises a second strip 9 with a beveled flank 91, placed movably on the base strip 6.

Son flanc biseauté 91 prend appui sur le flanc incliné 43 de la mortaise 4. Les deux bandes 7 et 9 sont écartées l'une de l'au­tre par des écarteurs 10, 11. Chaque écarteur 10, 11 est perçé dans ses deux bouts 101, 102 resp. 111, 112 et relié aux bandes 7 et 9, perçées de façon correspondante, par des pivots 12. Ces pivots 12 passent par les perçages et permettent aux écarteurs 10, 11 de pivoter. Ces derniers sont parallèles entre eux et en pivotant varient la distance, l'écart E, entre les bandes 7, 9 à flanc biseauté d'une manière équidistante.Its beveled flank 91 rests on the inclined flank 43 of the mortise 4. The two strips 7 and 9 are separated from one another by spacers 10, 11. Each spacer 10, 11 is pierced in its two ends 101 , 102 resp. 111, 112 and connected to the bands 7 and 9, drilled correspondingly, by pivots 12. These pivots 12 pass through the holes and allow the spacers 10, 11 to pivot. The latter are parallel to each other and, by pivoting, vary the distance, the distance E, between the strips 7, 9 with a bevelled side in an equidistant manner.

On choisit l'entre-axe entre les trous dans les écarteurs 10, 11 de sorte que l'angle entre ceux-ci et les bandes 7, 9 est diffé­rent de 90° lorsque les faces correspondantes de la bande couvre-­aiguilles et la mortaise 4 sont en contact. Un angle de p.e. 75° est convenable. En forçant un peu pour agrandir cet angle, on obtient une très bonne pression sur les faces et tout jeu de la bande 5 dans sa mortaise 4 est supprimé.The distance between the holes in the spacers 10, 11 is chosen so that the angle between them and the strips 7, 9 is different from 90 ° when the corresponding faces of the needle cover strip and the mortise 4 are in contact. An angle of e.g. 75 ° is suitable. By forcing a little to enlarge this angle, we obtain a very good pressure on the faces and any play of the strip 5 in its mortise 4 is eliminated.

La bande couvre-aiguilles 5 comprend enfin au moins un verrou 13 qui empêche les écarteurs 11, et par effet de parallélogramme aussi les écarteurs 10, de pivoter vers un angle plus petit. Le verrou 13 permet donc de maintenir la pression désirée entre les faces 41, 61 et 42, 71 et 43, 91. Le bout 131 du verrou 13 est logé dans une encoche 113 de l'écarteur 11. Il peut être meil­leur marché de prévoir un ajustage du bout 131 du verrou 13 que de pousser la précision des divers composants. L'opérateur décroche le verrou 13 en levant son bout 131, p.e. en passant un tournevis dans le dégagement 132 pour faire levier. Le verrou 13 est monté pivotant sur la bande 7 par un pivot 12.The needle cover strip 5 finally comprises at least one latch 13 which prevents the spacers 11, and by parallelogram effect also the spacers 10, from pivoting towards a smaller angle. The lock 13 therefore makes it possible to maintain the desired pressure between the faces 41, 61 and 42, 71 and 43, 91. The end 131 of the lock 13 is housed in a notch 113 of the spacer 11. It may be cheaper to provide an adjustment of the end 131 of the lock 13 than pushing the precision of the various components. The operator unhooks the bolt 13 by lifting its tip 131, eg by passing a screwdriver in the clearance 132 to pry. The lock 13 is pivotally mounted on the strip 7 by a pivot 12.

La bande couvre-aiguilles 5 est plus longue que le champ d'aiguilles, mais plus courte que la fonture 1. Ceci permet de fixer sur la fonture 1 un bloc d'arrêt 14 aux deux bouts 51, 52 de la bande couvre-aiguilles 5. Les champs d'aiguilles ont une longueur de 2 mètres ou plus et on divise avantageusement la bande couvre-aiguilles 5 en plusieurs segments 53, 54, 55, etc. Les bouts adjacents des segments 53, 54... sont taillés en biais comme sur les segments de bande couvre-aiguilles connus.The needle cover band 5 is longer than the needle field, but shorter than the needle bed 1. This makes it possible to fix a stop block 14 at the two ends 51, 52 of the needle cover strip on needle needle 1 5. The needle fields have a length of 2 meters or more and the needle cover band 5 is advantageously divided into several segments 53, 54, 55, etc. The adjacent ends of the segments 53, 54 ... are cut obliquely as on the known needle cover band segments.

Claims (5)

1. Bande couvre-aiguilles d'une fonture de machine à tricoter rectiligne, ayant une surface de base et des flancs biseau­tés, logée dans une mortaise de la fonture et appuyant contre des faces correspondantes de la mortaise, caractérisée par le fait qu'elle est constituée par une bande de base (6), un peu moins large que la partie adjacente de la mortaise (4), par une première bande (7) à flanc biseauté (71), fixée à plat sur la bande de base (6), par une seconde bande (9) à flanc biseauté (91), posée à plat sur la bande de base (6), par au moins deux écarteurs (10, 11), reliés dans leurs bouts (101, 102 resp. 111, 112) aux deux bandes (7, 9) à flanc biseauté (71, 91) par des pivots (12), permettant de varier d'une façon équidistante l'écart (E) entre les deux flancs biseautés (71, 91), et par au moins un verrou (13) qui maintient les écarteurs (10, 11) dans une position assurant un appui ferme de la surface de base (61) et des flancs biseautés (71, 91) de la bande couvre-aiguilles (5) contre les faces correspondantes (41, 42, 43) de la mortaise (4) de la fonture (1).1. Needle band of a straight knitting machine needle bed, having a base surface and bevelled sides, housed in a mortise of the needle bed and pressing against corresponding faces of the mortise, characterized by the fact that it consists of a base band (6), a little narrower than the adjacent part of the mortise (4), by a first band (7) with bevelled side (71), fixed flat on the base band (6 ), by a second strip (9) with bevelled side (91), laid flat on the base strip (6), by at least two spacers (10, 11), connected in their ends (101, 102 resp. 111 , 112) to the two bands (7, 9) with beveled flank (71, 91) by pivots (12), making it possible to vary in an equidistant manner the distance (E) between the two beveled flanks (71, 91) , and by at least one latch (13) which maintains the spacers (10, 11) in a position ensuring firm support of the base surface (61) and the bevelled sides (71, 91) of the needle cover strip ( 5) against the corresponding faces (41, 42, 43) of the mortise (4) of the needle bed (1). 2. Bande couvre-aiguilles selon la revendication 1, caractérisée par le fait qu'elle est plus courte que la fonture.2. Needle tape according to claim 1, characterized in that it is shorter than the needle bed. 3. Bande couvre-aiguilles selon la revendication 2, caractérisée par le fait qu'elle est constituée par au moins deux segments (53, 54...) alignés bout à bout dans la mortaise de la fonture.3. Needle cover strip according to claim 2, characterized in that it is constituted by at least two segments (53, 54 ...) aligned end to end in the mortise of the needle bed. 4. Bande couvre-aiguilles selon la revendication 3, caractérisée par le fait que les bouts adjacents de deux segments voisins sont taillés en biais.4. A needle cover strip according to claim 3, characterized in that the adjacent ends of two neighboring segments are cut at an angle. 5. Bande-couvre aiguilles selon la revendication 1, caractérisée par le fait que ses bouts (51, 52) butent contre des blocs d'arrêt (14), fixés sur la fonture.5. Strip-needle cover according to claim 1, characterized in that its ends (51, 52) abut against stop blocks (14), fixed on the needle bed.
EP19880810269 1987-04-28 1988-04-27 Needle cover tape for a needle bed of a flat-bed knitting machine Ceased EP0290389A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH160987A CH671592A5 (en) 1987-04-28 1987-04-28
CH1609/87 1987-04-28

Publications (2)

Publication Number Publication Date
EP0290389A2 true EP0290389A2 (en) 1988-11-09
EP0290389A3 EP0290389A3 (en) 1991-01-16

Family

ID=4214433

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880810269 Ceased EP0290389A3 (en) 1987-04-28 1988-04-27 Needle cover tape for a needle bed of a flat-bed knitting machine

Country Status (3)

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EP (1) EP0290389A3 (en)
JP (1) JPS6414354A (en)
CH (1) CH671592A5 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2780932A (en) * 1954-12-24 1957-02-12 Kuentz Roger Knitting machine
FR1171752A (en) * 1957-04-18 1959-01-29 Needle retainer in knitting machines
FR2199331A5 (en) * 1972-09-11 1974-04-05 Dubied & Cie Sa E

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2780932A (en) * 1954-12-24 1957-02-12 Kuentz Roger Knitting machine
FR1171752A (en) * 1957-04-18 1959-01-29 Needle retainer in knitting machines
FR2199331A5 (en) * 1972-09-11 1974-04-05 Dubied & Cie Sa E

Also Published As

Publication number Publication date
EP0290389A3 (en) 1991-01-16
CH671592A5 (en) 1989-09-15
JPS6414354A (en) 1989-01-18

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