EP0078720A1 - Verfahren zum Stricken von Streifen oder sich wiederholenden Querbändern an einer mehrsystemigen Rundstrickmaschine; Vorrichtung zur Ausführung dieses Verfahrens; entsprechend hergestelltes Produkt - Google Patents

Verfahren zum Stricken von Streifen oder sich wiederholenden Querbändern an einer mehrsystemigen Rundstrickmaschine; Vorrichtung zur Ausführung dieses Verfahrens; entsprechend hergestelltes Produkt Download PDF

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Publication number
EP0078720A1
EP0078720A1 EP82401792A EP82401792A EP0078720A1 EP 0078720 A1 EP0078720 A1 EP 0078720A1 EP 82401792 A EP82401792 A EP 82401792A EP 82401792 A EP82401792 A EP 82401792A EP 0078720 A1 EP0078720 A1 EP 0078720A1
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EP
European Patent Office
Prior art keywords
thread
fall
needles
knitting
different
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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
EP82401792A
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English (en)
French (fr)
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EP0078720B2 (de
EP0078720B1 (de
Inventor
Bernard Guenin
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.)
Dore-Dore Ets
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Dore-Dore Ets
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Application filed by Dore-Dore Ets filed Critical Dore-Dore Ets
Priority to AT82401792T priority Critical patent/ATE12268T1/de
Publication of EP0078720A1 publication Critical patent/EP0078720A1/de
Application granted granted Critical
Publication of EP0078720B1 publication Critical patent/EP0078720B1/de
Publication of EP0078720B2 publication Critical patent/EP0078720B2/de
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B1/10—Patterned fabrics or articles
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B9/00—Circular knitting machines with independently-movable needles
    • D04B9/26—Circular knitting machines with independently-movable needles for producing patterned fabrics
    • D04B9/28—Circular knitting machines with independently-movable needles for producing patterned fabrics with colour patterns
    • D04B9/30—Circular knitting machines with independently-movable needles for producing patterned fabrics with colour patterns by striping

Definitions

  • the invention aims to avoid these various drawbacks.
  • a multi-drop circular knitting loom capable of knitting in jersey or in derivative textures, for example in charged stitches or Jacquard, it makes it possible to knit repetitive stripes or transverse bands, of any height which extend over the entire periphery of the article, without cutting the threads at each change.
  • each of the scraps is permanently supplied with a well-defined wire so that, at each drop, a wire is in work or ready to go into work, while by means of a selection device needles associated with each of the scraps, each strip is started by changing the working thread by controlling on the one hand the device for selecting the scraps whose thread is still in work, so that the needles now stop picking the thread at this fall and, on the other hand, the selection device associated with the other fall, the thread of which had not been in use until then, so that the needles now pick the thread at this fall; the reverse operations being carried out at the end of a strip after an integer multiple of turns of the looms.
  • This method which makes it possible to obtain strips having any height in the direction of the mesh columns has the advantage that there is a continuous mesh of the wires at transition places.
  • the yarn put out of work is not cut and simply extends on the wrong side of the knit to the next area of the knit where it is taken up to work again.
  • the invention makes it possible to knit n strips of different appearance, with for each strip, k scraps working at the same time.
  • the invention also extends to multi-fall circular looms suitable for implementing the method.
  • These looms comprising at least two scraps supplied with different threads and a device for selecting needles which must work at a drop during each revolution of the loom cylinders and those which must on the contrary remain inactive, are characterized in that the means controlling these selection devices are arranged so that the control takes place after an integer multiple of turns of the looms of the loom.
  • the invention also extends to knitted articles obtained such as clothing, stockings, socks, etc.
  • These articles comprising one or more circular bands of wires of different appearance extending over the entire periphery of the article, are characterized in that the bonding of the wire from one band to the wire different from the adjacent zone of the article is a continuous mesh.
  • FIG. 1 is a diagram showing a few rows of meshes on a large scale and intended to explain the principle of the invention.
  • Figure 2 illustrates a variant.
  • FIG. 3 represents the evolution of the yarn or yarns of the canceled scraps while knitting takes place on another scrap.
  • Figure 4 is a schematic view of an embodiment of the control of needle selection cams, adaptable for example on circular double cylinder loom without Jacquard system.
  • the assembly of FIGS. 5a to 5d shows the lining of the needle plates on the lower cylinder of the loom for controlling the selection cams according to the arrangement illustrated in FIG. 4.
  • Figure 6 is a schematic perspective view of a circular loom equipped with a thread thrower change device.
  • the needle selection device associated with this first fall initiates the rise of all the needles, starting with the needle of the column of stitches "M”, then brings them in full ascent so that all the needles pick the thread "fl", the picking being followed by a normal slaughter. (To fully understand the design, it must be remembered that knitting descends in the loom, as it is made, so that the rows of stitches made first are at the bottom of Figure 1).
  • the device for selecting the first fall prevents the ascent, towards the wire picking position, of all the needles which follow the last needle to be picked in the column of meshes "N". Consequently, the following needles will pass to the first fall in the low position of complete slaughter, without further picking the thread "f1", the thrower of which however remains fixed in position and ready for work.
  • the needles which all come to stop the picking at the first fall, are now presented to the device for selecting the second fall, including the cam, which has just been placed in working position, initiate their Ascent always starting with the needle of the column of meshes "M”, then the needles are brought in full ascent to pick the wire "f2" there, culling followed by a normal felling.
  • a float thread "ff" exists on the reverse side of the knitted fabric, connecting two stripes or bands of the same color in the longitudinal direction.
  • the last needle having meshed drives this thread in its displacement on the circumference of the cylinder, without there meeting any obstacle since all the needles knit in jersey and are in low position d complete slaughter.
  • the wire thus entrained, (f2, figure 3), therefore sweeps the surface above the lower cylinder (or the free space between upper and lower cylinders, if it is a double cylinder loom) by forming a secant of increasing length from the eyelet of the j2 j2 to the point diametrically opposite to the fall which has just been canceled.
  • the secant of the wire decreasing, it is necessary to absorb each cylinder turn excess wire by pulling it back in the opposite direction through the thrower.
  • An additional "fisherman" device P (see FIG. 3) can be used for this, installed at each fall.
  • This device similar to that which manufacturers build on knitting machines for footwear, for knitting heels and toes in reciprocating motion, or on straight knitters to absorb excess yarn after each end of travel of the carriage, comprises a wire guide P1 mounted on a lever P pivoting about an axis P2 and returned by a spring P3.
  • the lever P pulled by the spring compensates for the slack that occurs in the wire and keeps it taut.
  • the selection of the needles to knit at one or the other fall is effected by the action of a movable cam disposed at each of the falls and acting on the knitting heels of the plates.
  • the placing in the operating position and the withdrawal of these cams can be controlled by a set of levers receiving their movements from eccentrics or from cams rotating in synchronism with the movement of the loom, or by an electromagnetic control.
  • the needle selection device On a double cylinder circular loom without the Jacquard system, the needle selection device is composed of two cams, movable in the radial direction and able to approach or move away from the needle cylinder.
  • One of the cams (which will be called “picking bolt V1"), when it is brought closer to the cylinder, initiates the ascent of the needles to allow the picking of the wire; the entry into function of this cam is done on the medium knitting heels "Tt”.
  • cam lock V2 when it is brought closer to the cylinder, initiates the cancellation of the fall by lowering all the needles to the non-picking position; the entry into function of this cam is on the large transfer heels "Tf".
  • FIG. 4 schematically shows an embodiment of such a device for controlling the selection of needles, adaptable for example to a double cylinder circular loom, devoid of the Jacquard system.
  • Z1 and Z2 respectively represent the lower and upper cylinders of the loom.
  • the picking lock "V1" when advanced towards the needle cylinder, has its inclined ramp facing the path of the knitting heels “Tt” of the plates 1 which cooperate, as known, with the needles 2 of the double type hook.
  • this cam The function of this cam is to initiate and continue knitting a stripe on the fall of the loom with which it is associated. It is shown in Figure 4 in the radially depressed position, that is to say in the working position where the knitting heels "Tt" of the plates are forced to climb the ramp inclined relative to the horizontal.
  • this cam V2 is shown in its position of maximum radial spacing, so that it has no action.
  • the control of the cams is programmed by discs 3 driven in rotation in a continuous manner, in synchronism with the rotation of the cylinders Z1 and Z2, and on which are arranged bosses or cams 4 with which the feeler levers 5 cooperate.
  • a spring 10, placed in the box 8, makes the elastic connection to allow the cam to come into action in two stages. Firstly, the cam rubs on the smallest heels of the plates, as seen for example in FIG. 5a for the cam V1, and secondly the cam is in the fully depressed position after the passage of the heels knitting means (cam V1 in Figure 5a) or large transfer heels (cam V2 in Figure 5b).
  • Figures 5a and 5b provide a better description of the sequence of successive operations for controlling the selection cams, assuming that the loom, comprising two falls each provided with a cam V1 and a cam V2, is used for knitting a sock.
  • FIG. 5a represents a section of the lower cylinder Z1, at the level of the knitting heels Tt of the plates 1.
  • the cam "V1" is pushed into the working position. After having rubbed on a few small knitting heels, it attacks the few medium knitting heels from the needle “M” to initiate the ascent of the needles which will pick the thread at the first fall.
  • the passage of the few heel means after the needle "M” allows the cam V1 to enter completely against the cylinder Z1 and thus all the needles around the entire periphery of the cylinder will initiate the ascent for the picking of the wire for a whole number cylinder turns.
  • FIG. 5b represents a section of the lower cylinder Z1, at the level of the transfer heels Tf of the needle plates.
  • the cam V1 can be moved away from the first fall for the put out of action.
  • the V2 cam can be removed, which cancels completely the first fall.
  • the invention has various advantages.
  • the invention makes it possible to no longer cut the threads at each change of stripes.
  • the basic principle consists in making the transverse stripes without overlapping of wires, or unsightly connections, by permanently feeding a well determined wire at each of the different falls. But this has the consequence of theoretically limiting the possible number of different scratches to the number of falls with which the loom is equipped.
  • the invention takes advantage of such a device by suitably adapting it, so that it multiplies the number of different stripes or transverse bands which can be carried out at the same fall from the loom, while retaining the advantage of neither overlapping, nor cutting of the threads at the changes of stripes, while ensuring the connection of the threads by a normal mesh.
  • Figure 6 shows the principle of operation with change of throwers at one of the falls.
  • the thrower J 22 bringing the wire f 22 to this same fall, is in the retracted position (out of work), but a vertical guide "G" prevents the section of wire connecting the last stitch to the thrower J 22 from entering the chisel "S".
  • the lower end of this guide has a notch in the direction of travel to prevent the section of wire from escaping from the lower part of the guide.
  • the permutation of the throwers is carried out while this fall is not working, that is to say while one is knitting a scratch on another fall.
  • the permutation of the throwers can be carried out without slowing down the progress of the loom, because the needles pass without picking at this canceled fall.
  • the guide "G" is preferably retractable to allow the normal function of the scraper device to be temporarily resumed, for example on knitting machines for footwear for the introduction and removal of the elastic thread at the ribbing, or reinforcing wire in heels and toes.
  • the retractable guide "G" can be replaced by a selective command of the operation of the scissors; thus, when a thrower goes out of work, the wire is normally placed in the chisel, but the latter remains open so as not to cut the wire.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
  • Decoration Of Textiles (AREA)
  • Telephone Function (AREA)
EP82401792A 1981-10-29 1982-10-01 Verfahren zum Stricken von Streifen oder sich wiederholenden Querbändern an einer mehrsystemigen Rundstrickmaschine; Vorrichtung zur Ausführung dieses Verfahrens; entsprechend hergestelltes Produkt Expired - Lifetime EP0078720B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82401792T ATE12268T1 (de) 1981-10-29 1982-10-01 Verfahren zum stricken von streifen oder sich wiederholenden querbaendern an einer mehrsystemigen rundstrickmaschine; vorrichtung zur ausfuehrung dieses verfahrens; entsprechend hergestelltes produkt.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8120298A FR2515705B1 (fr) 1981-10-29 1981-10-29 Procede de tricotage de rayures ou bandes transversales repetitives sur metier a tricoter circulaire multichutes, dispositif pour la mise en oeuvre de ce procede et produits obtenus
FR8120298 1981-10-29

Publications (3)

Publication Number Publication Date
EP0078720A1 true EP0078720A1 (de) 1983-05-11
EP0078720B1 EP0078720B1 (de) 1985-03-20
EP0078720B2 EP0078720B2 (de) 1991-07-10

Family

ID=9263521

Family Applications (1)

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EP82401792A Expired - Lifetime EP0078720B2 (de) 1981-10-29 1982-10-01 Verfahren zum Stricken von Streifen oder sich wiederholenden Querbändern an einer mehrsystemigen Rundstrickmaschine; Vorrichtung zur Ausführung dieses Verfahrens; entsprechend hergestelltes Produkt

Country Status (6)

Country Link
EP (1) EP0078720B2 (de)
JP (1) JPS58126350A (de)
AT (1) ATE12268T1 (de)
DE (1) DE3262692D1 (de)
ES (1) ES516925A0 (de)
FR (1) FR2515705B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3033286A1 (fr) * 2015-03-04 2016-09-09 Michelin & Cie Pneumatique comprenant un tricot et des elements de renfort

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1541230A (en) * 1922-12-18 1925-06-09 Lombardi Vincent Enitting machine
GB308421A (en) * 1928-02-09 1929-03-28 Spiers William Ltd Improvements in or relating to circular knitting machines and the method of knittingfabrics thereon
GB342409A (en) * 1929-11-15 1931-02-05 Grieve & Co Ltd T Improvements in or relating to circular knitting machines
US2225842A (en) * 1938-04-12 1940-12-24 Scott & Williams Inc Circular knitting machine
US3975926A (en) * 1975-02-24 1976-08-24 Riccardo Tenconi Feed device for circular knitting machines of the type manufacturing open fabric

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1541230A (en) * 1922-12-18 1925-06-09 Lombardi Vincent Enitting machine
GB308421A (en) * 1928-02-09 1929-03-28 Spiers William Ltd Improvements in or relating to circular knitting machines and the method of knittingfabrics thereon
GB342409A (en) * 1929-11-15 1931-02-05 Grieve & Co Ltd T Improvements in or relating to circular knitting machines
US2225842A (en) * 1938-04-12 1940-12-24 Scott & Williams Inc Circular knitting machine
US3975926A (en) * 1975-02-24 1976-08-24 Riccardo Tenconi Feed device for circular knitting machines of the type manufacturing open fabric

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3033286A1 (fr) * 2015-03-04 2016-09-09 Michelin & Cie Pneumatique comprenant un tricot et des elements de renfort
WO2016139130A1 (fr) * 2015-03-04 2016-09-09 Compagnie Generale Des Etablissements Michelin Pneumatique comprenant un tricot et des éléments de renfort

Also Published As

Publication number Publication date
ATE12268T1 (de) 1985-04-15
EP0078720B2 (de) 1991-07-10
FR2515705B1 (fr) 1985-06-07
EP0078720B1 (de) 1985-03-20
ES8307310A1 (es) 1983-06-16
FR2515705A1 (fr) 1983-05-06
DE3262692D1 (en) 1985-04-25
ES516925A0 (es) 1983-06-16
JPS58126350A (ja) 1983-07-27

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