EP0029193B1 - Dispositif pour fabriquer des tricots à motif intarsia, en particulier sur métiers rectilignes - Google Patents

Dispositif pour fabriquer des tricots à motif intarsia, en particulier sur métiers rectilignes Download PDF

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Publication number
EP0029193B1
EP0029193B1 EP80106905A EP80106905A EP0029193B1 EP 0029193 B1 EP0029193 B1 EP 0029193B1 EP 80106905 A EP80106905 A EP 80106905A EP 80106905 A EP80106905 A EP 80106905A EP 0029193 B1 EP0029193 B1 EP 0029193B1
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EP
European Patent Office
Prior art keywords
elements
rod
base body
plate
carriage units
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Expired
Application number
EP80106905A
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German (de)
English (en)
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EP0029193A1 (fr
Inventor
Adriano Capardoni
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.)
A Caperdoni & C SpA
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A Caperdoni & C SpA
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Application filed by A Caperdoni & C SpA filed Critical A Caperdoni & C SpA
Publication of EP0029193A1 publication Critical patent/EP0029193A1/fr
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Expired legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B11/00—Straight-bar knitting machines with fixed needles
    • D04B11/18—Straight-bar knitting machines with fixed needles for producing patterned fabrics
    • D04B11/20—Straight-bar knitting machines with fixed needles for producing patterned fabrics with colour patterns

Definitions

  • This invention relates to a device intended for application to knitting machines, in particular linear knitting machines adapted for producing so-called inlaid knitted fabrics, comprising a plurality of rod-like elements moving longitudinally of the knitting machine, each rod-like element rigidly supporting a respective multiplicity of yarn guiding members supplying yarn to a corresponding multiplicity of needles of the knitting machine held in predetermined positions, and respective stop elements rigidly connected to said rod-like elements and engaging abutment guide portions moving transversely of the knitting machine to restrict the longitudinal travel of the rod-like elements.
  • An inlaid knitted fabric refers herein to a type of knitwork, well known in the art, which is enlivened with patterns reproducing in general geometric figures, such as lozenges, rectangles, and the like, which knitwork, contrary for instance to the Jacquard knitwork, has an almost identical appearance both on the plain and purl sides.
  • a device of the above type wherein the stop elements comprise, for each thread carrier rod, a lug abutting against two sets of droppers, each carried and brought in or out of action by a respective lever system controlled by bands of perforated cards.
  • the stop elements comprise, for each thread carrier rod, a lug abutting against two sets of droppers, each carried and brought in or out of action by a respective lever system controlled by bands of perforated cards.
  • four carrier rods are provided, one for ground carriers, one for colour carriers, and two for selvedge carriers, wherein one band of perforated cards controls the traverse of the ground carrier rod, one the traverse of the two selvedge carrier rods and two the traverse of the colour carrier rod.
  • ground carrier rod and colour carrier rod are separately controlled so that a tedious and difficult programming procedure is involved and locating errors can occur which, by summing on, prevent a high quality inlaid knitted fabric from being obtained.
  • the task of this invention is to provide a device of the above indicated general type, solving the problem of considerably reducing the possibility of errors in the locating of the yarn guiding members, thereby providing very high fineness inlaid knitted fabrics of high quality in a simple and reliable manner.
  • the device of this invention comprises a metal support base body 1, of substantially rectangular shape, wherein there are defined sliding movement guides 2 which extend transversely across the full width of the supporting body 1.
  • sliding movement guides 2 In the sliding movement guides 2, there is slidably engaged a plate-like element 3, which will be explained hereinafter with reference to Figure 3 and is adapted for being slidably advanced stepwise back and forth along said sliding movement guides 2.
  • the plate-like element 3 With the plate-like element 3, there are associated, e.g. through screw fasteners 4, two metal strips, indicated at 5 and 6 respectively.
  • the strips 5 and 6 are arranged substantially V-like, the distance to the base of the "V" and the slope or inclination of the strips 5 and 6 being preset during the designing stage in accordance with the dimensions of the knitted pattern to be produced and the machine fineness.
  • two flanges 7 and 8 which carry, in turn, rod-like guiding elements 9 and 10 respectively, wherealong there can be reciprocated in the directions shown by the arrows two carriage units 11 and 12, respectively, the reciprocating motion being imparted to the carriages 11 and 12 through a suitable actuating mechanism which will be explained hereinafter and reciprocates metal web or band-like elements 13 and 14 engaged respectively with the carriages 11 and 12 and passed around small wheels or pulleys 15, 16 and 17,18, the wheels 15 and 17 and 16 and 18, respectively, being carried rotatably by small shafts 19 and 20 which are fixedly associated, e.g.
  • each carriage 11, 12 there is associated a pin or peg element 23, 24 respectively, wherewith are in turn associated bars 25 supporting the yarn feeding fingers or tubes GF (shown in Figure 9).
  • the carriage elements 11 and 12 there are respectively rigid two supporting plates 26, 27, with the plate 26 there being associated two pin stop elements 28, 29, and with the plate 27 there being associated a respective pin stop element 30.
  • the stop elements 28 and 29 limit, by abutting against the outer surfaces of the strips 5 and 6, the reciprocating movement of the carriage 11, and accordingly of the yarn feeding finger supporting bar (not shown in Figure 1) associated therewith, whilst the stop element 30 limits, by abutting against the inner surfaces of the strips 5 and 6, the reciprocating movement of the carriage 12, and accordingly of the respective bar 25 supporting the yarn feeding fingers GF supported thereby.
  • the extent of movement of the carriages will depend on the position of the plate 3 and inclination of the strips 5 and 6 thereto, it being from this very stage of the description noticeable that, at each instant, the sum of the travel distance of the carriage 11 plus the travel distance of the carriage 12 corresponds to a preset number of needles in the knitting machine, e.g. 40 needles, which number will be dictated by the dimensions of the patterns to be knitted.
  • a preset number of needles in the knitting machine e.g. 40 needles, which number will be dictated by the dimensions of the patterns to be knitted.
  • the carriage 12 will be at a zero travel condition, that is with its stop pin 30 wedged in the apex of the "V", such travel movements being obviously determined by the position of the plate 3 and strips 5 and 6, under the control and/or programmed timing by the knitting machine actuating members.
  • the pawl elements 35 and 36 are biased by two respective springs 41 and 42 having their ends secured to the pins 43 and 44 on the strips 37 and 38 and 45, 46 on the pawl elements 35 and 36 themselves.
  • Strip elements 47 and 48 are slidably received in guides formed in the base body 1, and are adapted for reciprocating back and forth to respectively inhibit and allow the pawls 35 and 36 to engage with the rack teeth 33 or 34.
  • the strips 47 and 48 are provided, at an intermediate portion thereof, with ports or openings 49 and 50, formed through the strips themselves such as not to break their continuity, thereby said strips are enabled to move as a unitary structure in their guiding grooves.
  • travel movement which is controlled by either electromagnetic or mechanical means (not shown)
  • the strips 47 and 48 being further guided by small plates 51, 52, 53 and 54 integrally formed on the base body 1, are engaged in a swinging manner with small levers 55 and 56 having the other end swivelled to a small shaft 57, in turn attached rigidly to small blocks 58 and 59 which are in turn affixed to the base body 1, as by thread engagement.
  • the strips 47 and 48 have at their ends slots wherein there engage for connection elongate head pins or pegs 60, 61 which are rigid with the levers 55 and 56, respectively. Additional pins (not shown), rigid with the levers 55 and 56, and located at a lower level than the pins 60, 61, function as the securing elements for respective ends of return springs 62, 63 having their other ends linked to a plate 64 made rigid, through four cylindrical rods 65 (of which only the two upper ones are shown), with the blocks 58, 59, and thus with the base body 1. It will be appreciated from the foregoing how the forward and rearward advance movements of the plate 3, and strips 5 and 6, are obtained.
  • the strips 37 and 38 slide in their respective guiding grooves provided on the base body 1, being further guided by the guiding plates 66 affixed to the base body 1 and abutting against said additional guiding plates 51, 52, 53, 54.
  • the plate 3 will be advanced stepwise forward or rearward, to thus limit, step by step, the extent of the translatory movement of the carriage units 11 and 12, and accordingly of the supporting bars 25 for the yarn feeding fingers GF associated therewith.
  • the yarn feeding fingers GF will engage an ever variable number of needles in the front and rear needle beds (not shown) of the knitting machine, thus providing the desired lozenge pattern, because, as mentioned hereinabove, the sum of the travel distances of the carriages 11 and 12 corresponds, step by step, to a preset number of needles.
  • this mechanism is located below the base body 1, that is below the carriages 11 and 12. It substantially comprises a horizontal shaft 67, supported at its ends, whereon a gear 68 is keyed which receives a reciprocating oscillatory motion from means, not shown, associated with the knitting machine, the motion being transmitted, for example, by means of a drive chain.
  • a gear 68 is keyed to the shaft 67, there are keyed permanently two sleeve portions 67', against which there abut cylindrical bushings 69 and 71 respectively, an additional bushing or ring 70 being arranged on the shaft 67 between the bushings 69 and 71.
  • the central cylindrical bushing 70 has four pin elements 72 at diametrically opposed locations, only two such pins being shown in Figure 6.
  • Rigid with the outer cylindrical bushings 69 and 71 are two portions of cylindrical rods, indicated at 74 and 73 respectively, on which cylindrical rods elements 75 and 76 are slidable, stop nuts being provided on the rod portions 73 and 74 to prevent the elements 75 and 76 from sliding off.
  • the cylindrical rods 73 and 74 have threaded end portions 77, and the elements 75 and 76, which are slidable on said rods, have respective bifurcated ends 78, the bifurcated portions 78 being engageable with the pins 72 of the cylindrical bushing 70.
  • the assemblies including the bushings 69 and 71, cylindrical rods 74 and 73, and elements 76 and 75 are identical.
  • springs 79 are stretched between respective ends of the elements 75 and 76, two springs 79 being provided for each element 75, 76.
  • the bifurcated ends 78 of the elements 75 and 76 substantially abut against the sleeve 67'.
  • a small belt or band 14 for the reciprocation of the carriage 11 the belt driving the carriage 12 associated with the ends of the rod 74 being omitted from Figure 7.
  • the carriage driving mechanism enables, while maintaining the oscillation of the shaft 67 fixed, a variable reciprocation of the two carriages, and this by virtue of the "lost motion" feature of the springs 79. In that manner, and step by step, the sum of the translation of one carriage plus the translation of the other carriage will actually correspond to a constant number of needles.
  • the carriages allows the needles to protrude from the needle beds and the yarn is deposited thereon by means of the feeding fingers GF being oscillated and translated by the carriages 11 and 12; subsequently, the carriage will actuate the needles which have already been fed with the yarn, such as to produce the knitted fabric.
  • Figure 8 shows more in detail, and in perspective, one of the identical yarn feeding finger carrying carriages, Figure 9 showing the yarn feeding fingers GF for the patterning bar and complementary one respectively, and Figures 10 to 13 illustrate some inlaid knitwork patterns to be obtained with the device of this invention.
  • the range of patterns to be obtained with the inventive device is quite a broad one, because through a suitable timing of the knitting machine movements, one can obtain, in addition to the conventional lozenge motif pattern shown in Figure 10, more intricate patterns, such as those shown in Figure 13, having a substantially rectangular middle portion.
  • a device for producing sculptured or inlaid knitwork which can be applied to linear knitting machines and wherein the yarn guiding members or tubes are supported on and simultaneously driven, in pluralities, by only two bars thereby reducing to a minimum the locating errors of said yarn guiding members and providing an inlaid knitted fabric of high fineness and quality.
  • this device is structurally simple and has shown to be actually reliable in operation, and has enabled the knitting of inlaid pattern knitwork on machines having a high number of needles per linear inch, which was not possible heretofore with conventional methods.
  • a device can be designed including more than two yarn guiding member supporting bars or rods.
  • the strips limiting the longitudinal travel of the yarn feeding finger carrying carriages may be arranged in a differently angled V-like configuration, such as to either increase or decrease the number of the needles brought to operate.
  • a base body capable of accommodating different plate-like elements, with different shapes from the basic "V", or to provide plate-like elements which can accommodate different strips or change the position of the associated strips, such as to produce varying shape and dimension patterns.
  • the forward or rearward advance of the strip-carrying plate instead of being implemented with the racks shown, could be obtained through any equivalent means, such as a step motor.
  • inventive device may be applied to any machine for producing knitted fabrics, even to needle-less ones having other knitting devices, e.g. small tubes shaped to produce inlaid effect patterns.

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

Claims (15)

1. Dispositif pour produire des éléments insérés ou des tissus tricotés en relief, en particulier avec des machines à tricoter linéaires, comprenant plusieurs éléments en forme de tige (25) se déplaçant le long de la machine à tricoter, chacun desdits éléments en forme de tige (25) supportant rigidement un grand nombre d'éléments de guidage de fil correspondants (GF) amenant le fil à un grand nombre d'aiguilles correspondantes de ladite machine à tricoter et maintenues dans des positions prédéterminées tandis que des éléments d'arrêt correspondants (28,30) fixés rigidement auxdits éléments en forme de tige et venant buter contre des éléments de guidage (5, 6) se déplacent transversalement par rapport à la machine à tricoter, afin de limiter le déplacement longitudinal desdits éléments en forme de tige (25), caractérisé en ce que chaque élément de guidage à butée (5, 6) vient au contact des éléments d'arrêt d'au moins deux éléments en forme de tige différents (25).
2. Dispositif selon revendication 1, caractérisé en ce qu'il comprend un socle de support (1), un élément en forme de plaque (3), reposant sur ledit socle (1) et glissant en avant et en arrière et par étapes le long dudit socle, transversalement par rapport à la machine à tricoter et au moins deux chariots (11, 12), supportés par ledit socle (1) et portant chacun un élément en forme de tige (25) à des distances souhaitées respectives, le long dudit socle, et se déplaçant en avant et en arrière le long dudit socle (1), lesdits éléments de guidage à butée (5, 6) étant montés d'une manière fixe sur ledit élément en forme de plaque (3) et lesdits éléments d'arrêt (28, 30) étant fixés rigidement auxdits chariots (11, 12).
3. Dispositif selon revendications 1 et 2, caractérisé en ce qu'il comprend des guides (2) subissant un mouvement de glissement sur ledit socle (1), dans une direction transversale essentiellement à travers une face dudit socle (1) et venant au contact dudit élément en forme de plaque (3), pour provoquer le mouvement de glissement de celui-ci.
4. Dispositif selon une ou plusieurs des revendications précédentes, caractérisé en ce qu'il comprend deux éléments en forme de tige (25) et deux chariots (11, 12) et en ce que lesdits éléments de guidage à butée comprennent deux bandes métalliques (5, 6), disposées essentiellement en forme de V.
5. Dispositif selon revendications 2 ou 3, caractérisé en ce que ledit élément en forme de plaque (3) comprend des crémaillères (33, 34) disposées face à face et conçues pour actionner des dispositifs de commande à cliquet (35, 36) pouvant subir un mouvement de glissement par rapport à une face dudit socle de support (1), afin de permettre l'avancement et/ou le recul, respectivement, dudit élément en forme de plaque (3).
6. Dispositif selon revendications 4 et 5, caractérisé en ce que les dents (33, 34) de ladite crémaillère (33) sont définies par les arêtes longitudinales d'un autre élément en forme de plaque (32), fixé d'une manière immobile auxdits éléments en forme de plaque (3) sur une première face de celui-ci, écartée d'une seconde face de celui-ci à laquelle lesdites deux bandes (5, 6) sont fixées et s'étendent transversalement et axialement, essentiellement à travers la majeure partie de ladite première face.
7. Dispositif selon revendication 5, caractérisé en ce que lesdits dispositifs de commande à cliquet (35, 36) peuvent pivoter par rapport à deux autres éléments en forme de bande (37, 38) raccordés fonctionnellement par un élément de commande tranversal (39) et en contact glissant avec d'autres guides disposés transversalement sur ladite face dudit socle de support (1), le mouvement oscillatoire de va-et-vient dudit élément transversal (39) étant donc transformé ainsi en un mouvement linéaire de va-et-vient par lesdits deux autres éléments en forme de bande (37, 38) et par les cliquets (35, 36) associés à ceux-ci.
8. Dispositif selon revendication 5, caractérisé en ce qu'il comprend deux éléments en forme de tige on de bande (47, 48), disposés de manière à glisser transversalement dans des guides sur ledit socle, en ce que lesdits éléments en forme de tige définissent ainsi des ouvertures (49, 50) disposées d'une manière essentiellement axiale, et la position desdits éléments en forme de tige (47, 48) dans ledit socle étant telle, par rapport auxdits éléments à cliquet, qu'elle empêche l'engagement d'un dit élément à cliquet (35, 36) avec la dent de crémaillère (33, 34) conçue pour fonctionner en combinaison en celui-ci, de manière à provoquer le déplacement par étapes dudit élément en forme de plaque (32) vers l'avant et/ou vers l'arrière, et/ou vice-versa.
9. Dispositif selon revendication 8, caractérisé en ce que le déplacement desdits éléments en forme de tige (47, 48) dans ledit socle est provoqué par des dispositifs mécaniques ou électromagnétiques, que l'engagement dudit élément à cliquet (37, 36) avec les dents (33, 34) conçu pour fonctionner en combinaison avec ceux-ci, se produit par l'ouverture correspondante (49, 50) dans ledit élément en forme de tige (47, 48).
10. Dispositif selon revendication 4, caractérisé en ce que la somme des distances du déplacement longitudinal desdits chariots (11,12) correspond, pour chaque étape dudit élément en forme de plaque (3), à un nombre fixe prédéterminé d'aiguilles.
11. Dispositif selon revendication 4, caractérisé en ce que lesdits chariots (11, 12) sont supportés avec possibilité de glissement sur ledit socle (1) par des tiges de guidage cylindriques correspondantes (9, 10), lesdites tiges étant fixées à demeure sur ledit socle (1) et étant disposées parallèment l'une à l'autre, essentiellement sur toute la longueur de la dimension longitudinale dudit socle (1).
12. Dispositif selon revendication 4, caractérisé en ce que le mouvement longitudinal de va-et-vient desdits chariots (11, 12) le long de leurs tiges de guidage cylindriques correspondantes (9, 10) est provoqué par des dispositifs de commande animés d'un mouvement rotatif oscillatoire de va-et-vient et raccordés fonctionnellement auxdits chariots (11, 12) par l'intermédiaire de deux éléments d'entraînement (13, 14) correspondants et en forme de courroie, passant sur les poulies de guidage correspondantes (15, 16, 17, 18) supportées, avec possibilité de rotation, par ledit socle (1), pré des extrémités desdites tiges de guidage cylindriques (9, 10).
13. Dispositif selon revendication 12, caractérisé en ce que lesdits dispositifs de commande desdits chariots (11, 12) comprennent un arbre (67) conçu pour fixer les extrémités de celui-ci au châssis de ladite machine à tricoter et pour pouvoir subir un mouvement d'oscillation dans les deux sens, suivant un angle de rotation prédéterminé, au moyen d'un dispositif à moteur synchronisé avec les mouvements principaux programmés de ladite machine, ledit arbre (67) portant deux buselures annulaires (69, 71), avec possibilité de rotation, chacune desdites buselures portant des parties rigides de tiges cylindriques (74, 73) sur lesquelles sont disposés, avec possibilité de glissement, des éléments à étrier (76, 75) présentant une extrémité correspondante en forme de fourche, tandis qu'une troisième buselure (70) est disposée entre les deux buselures (69,71) et est montée d'une manière fixe sur ledit arbre (67), ladite troisième buselure (70) portant plusieurs broches (72) pouvant s'engager dans les extrémités en forme de fourche desdits éléments à étrier (76, 75) pour provoquer le déplacement desdits éléments à étrier (76, 75) le long desdites tiges cylindriques (74, 73), les ressorts (79) étant prévus pour assurer l'interconnexion des autres extrémités de chaque paire d'éléments à étrier (75, 76).
14. Dispositif selon revendications 12 et 13, caractérisé en ce que lesdits éléments d'entraînement en forme de courroie (13, 14) pour entraîner lesdits chariots (11, 12) sont fixés par leurs extrémités aux extrémités filetées correspondantes desdites parties de tiges cylindriques (74, 73), fixées rigidement auxdites buselures (69, 71).
15. Dispositif selon revendication 1, caractérisé en ce que lesdits dispositifs de commande ou d'entraînement pour lesdits éléments (25) en forme de tige supportant le tube de guidage du fil comprennent au moins un moteur pas à pas ou un moteur à courant continu, et les dispositifs de commande de celui-ci.
EP80106905A 1979-11-16 1980-11-08 Dispositif pour fabriquer des tricots à motif intarsia, en particulier sur métiers rectilignes Expired EP0029193B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2735479 1979-11-16
IT27354/79A IT1193854B (it) 1979-11-16 1979-11-16 Dispositivo applicabile a macchine da maglieria rettilinee per la produzione di maglia a intarsio

Publications (2)

Publication Number Publication Date
EP0029193A1 EP0029193A1 (fr) 1981-05-27
EP0029193B1 true EP0029193B1 (fr) 1985-06-05

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP80106905A Expired EP0029193B1 (fr) 1979-11-16 1980-11-08 Dispositif pour fabriquer des tricots à motif intarsia, en particulier sur métiers rectilignes

Country Status (5)

Country Link
EP (1) EP0029193B1 (fr)
JP (1) JPS5685448A (fr)
DE (1) DE3070742D1 (fr)
ES (1) ES497140A0 (fr)
IT (1) IT1193854B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6652262B2 (en) * 2001-07-24 2003-11-25 Caco Pacific Corporation Injection mold apparatus with improved take-off plate

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191011383A (en) * 1910-05-09 1911-03-02 Harold Greenhalgh Improvements in Knitting Machines and in the Method of Knitting thereon.
GB308871A (en) * 1928-02-23 1929-04-04 John Edward Scott Improvements relating to straight-bar knitting machines and the goods produced thereon
US1867704A (en) * 1930-05-16 1932-07-19 Einsiedel Ges Mit Schrankter H Device on flat knitting machines for producing goods patterned by reenforcement
GB360545A (en) * 1930-09-01 1931-11-12 Cotton Ltd W Improvements in rotary or straight-bar knitting machines
GB491213A (en) * 1937-02-25 1938-08-25 Thomas Smith Improvements in and relating to knitting and knitting machines

Also Published As

Publication number Publication date
IT1193854B (it) 1988-08-31
JPS5685448A (en) 1981-07-11
ES8201652A1 (es) 1982-01-16
ES497140A0 (es) 1982-01-16
JPS6122055B2 (fr) 1986-05-30
IT7927354A0 (it) 1979-11-16
DE3070742D1 (en) 1985-07-11
EP0029193A1 (fr) 1981-05-27

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