EP2666896B1 - Machine à tricoter rectiligne dotée d'éléments de découpe - Google Patents

Machine à tricoter rectiligne dotée d'éléments de découpe Download PDF

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Publication number
EP2666896B1
EP2666896B1 EP20120169263 EP12169263A EP2666896B1 EP 2666896 B1 EP2666896 B1 EP 2666896B1 EP 20120169263 EP20120169263 EP 20120169263 EP 12169263 A EP12169263 A EP 12169263A EP 2666896 B1 EP2666896 B1 EP 2666896B1
Authority
EP
European Patent Office
Prior art keywords
needle
cutting element
bed
knitting machine
needles
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.)
Active
Application number
EP20120169263
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German (de)
English (en)
Other versions
EP2666896A1 (fr
Inventor
Francesco Collura
Jörg Hartmann
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.)
H Stoll GmbH and Co KG
Original Assignee
H Stoll GmbH and Co KG
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 H Stoll GmbH and Co KG filed Critical H Stoll GmbH and Co KG
Priority to EP20120169263 priority Critical patent/EP2666896B1/fr
Priority to CN201310197200.6A priority patent/CN103485067B/zh
Publication of EP2666896A1 publication Critical patent/EP2666896A1/fr
Application granted granted Critical
Publication of EP2666896B1 publication Critical patent/EP2666896B1/fr
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Classifications

    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04BKNITTING
    • D04B7/00Flat-bed knitting machines with independently-movable needles
    • D04B7/12Flat-bed knitting machines with independently-movable needles with provision for incorporating pile threads
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04BKNITTING
    • D04B1/00Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B1/02Pile fabrics or articles having similar surface features
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04BKNITTING
    • D04B35/00Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/02Knitting tools or instruments not provided for in group D04B15/00 or D04B27/00
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04BKNITTING
    • D04B35/00Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/34Devices for cutting knitted fabrics

Definitions

  • the slitting of knits of crocheted and knitted fabrics has long been known, in particular for the production of plush knits.
  • the WO 01/20067 A1 describes a flat knitting machine in which cutting elements, instead of needles, are arranged in the grooves of one of the two opposing needle beds.
  • the present invention has for its object to provide a way to separate stitches or tuck loops during the knitting process on a flat knitting machine, which is also applicable to double-surface knitted fabrics and does not limit the stitch formation.
  • a flat knitting machine with at least two oppositely arranged needle beds, which are each provided with a plurality of grooves in which needles are mounted longitudinally displaceable, which is characterized in that at least above one of the needle beds at least one cutting element bed is arranged with a plurality of grooves is provided, in which cutting elements are arranged to longitudinally displaceable for the separation of stitches formed on the needles or tongs.
  • the knitting of the knitting machine is in no way influenced by the cutting elements. It is thus possible to produce single-layer and double-sided knitted fabrics as well as tubular knits in plush quality.
  • the pattern of knitted fabrics is in no way limited.
  • the storage of the cutting elements in one or more separate beds also allows precise control of both the needles and the cutting elements. The reliability of the machine is therefore very high.
  • the groove pitch of the at least one cutting element bed corresponds to the groove pitch of the needle beds or a multiple of the groove pitch of the needle beds.
  • each needle or every second, third or fourth needle can be assigned a cutting element. No lateral offset of the needle beds or cutting element bed is required to cut the loops or tuck loops, but may be coarser than the pitch of the needle bed at pitches of the cutting element bed.
  • the length of the at least one cutting element bed is equal to the length of the needle beds. It can then be produced plush knits over the entire length of the needle beds and not only in certain areas of the needle beds.
  • each cutting element bed is associated with a portion of the underlying needle bed.
  • the individual cutting element beds can have the same or a different groove pitch.
  • these can be transferred from the needles on which they are located to the cutting elements of a cutting element bed arranged above this needle bed.
  • the cutting elements are introduced from the needle bed side between the legs of the stitches or tuck loops.
  • the at least one cutting element bed can also be arranged such that the stitches or tuck loops to be cut can be transferred from the needles of a needle bed to the cutting elements of a cutting element bed arranged above the opposing needle bed.
  • the cutting elements of the above the opposite needle bed arranged cutting element bed are introduced from the comb gap side between the legs of the mesh or tuck loops.
  • the stitches or tuck loops to be cut can be transferred to the cutting elements of the at least one cutting element bed by ejection of the needles.
  • the stitches or tuck loops are lifted over the comb gap, so that they can be introduced into the mesh or the tuck loops by a sprouting of the cutting elements.
  • the expulsion of the needles and cutting elements can be done for example via lock parts on the machine slide.
  • the flat knitting machine can also be designed such that the stitches or tuck loops to be cut can be separated by movement of the cutting elements of the at least one cutting element bed onto the needles and without ejection of the needles.
  • the cutting element beds can be aligned at a relatively large angle relative to the needle beds arranged in a v-shape and the cutting elements can be driven out far enough.
  • the needles may preferably have so-called box springs for spreading the meshes to be cut.
  • the equipment of the needles with box springs is not mandatory.
  • the stitches or tuck loops to be cut can be transferred to the cutting hook, the needle neck, a box spring, the open or closed needle tongue or the closed slider of a needle on a cutting element and / or can be cut by this. There are thus no special requirements for the needles used.
  • Fig. 1a shows a front needle bed 1 and a rear needle bed 2 of a flat knitting machine 100 in which latch needles 3, 4 are mounted longitudinally displaceable.
  • Over the needle beds 1, 2 are cutting elements 5, 6 for cutting stitches as part of a non-illustrated Mesh cutting device 150 is arranged, which has at least one arranged above the needle beds 1, 2 cutting element bed with a plurality of juxtaposed cutting elements 5, 6.
  • the cutting elements 5, 6 each have a tip 51, 61, a breast surface 52, 62 and a cutting surface 53, 63.
  • the needle 3 of the front needle bed 1 holds a stitch 7 in its thread space 33, which is bounded by the needle hook 31 and the closed needle tongue 32.
  • the needle 3 is located in Fig. 1a ) in its basic position, in which the mesh 7 rests in the direction of the arrow 71 on the tee-off ground 11 of the front needle bed 1 by the action of a knit trigger, not shown.
  • the needle 3 was driven by means of a drive device, not shown, in the direction of the arrow 300, wherein the needle tongue 32 was opened by the mesh 7 and the mesh 7 is now on the needle shaft behind the open needle tongue.
  • Fig. 1d shows the position of the loop 7 on the needle tongue 32 after completion of the movement in Fig. 1c ).
  • the needle 3 has been withdrawn so far that the stitch 7 is in its transfer position, just before its tee.
  • the cutting element 5 is now expelled in the direction of the arrow 500 and pushed into the loop 7, ie between introduced her mesh legs.
  • the tip 51 of the cutting element thereby slides laterally past the tongue 32 and into the thread space 33 so far that it projects through the loop 7.
  • the needle 3 is retracted in the direction of the arrow 301, whereby the mesh 7 is released from it.
  • the cutting element 5 is driven so far in the direction of the arrow 500 that the mesh 7 merges with the cutting surface 53 in the direction of the breast surface 52, slides on it and is thereby separated.
  • Fig. 1f the needle 3 is back in its basic position.
  • the cutting element 5 is also retracted to its home position.
  • FIG. 1 While in Fig. 1 the stitch 7 has been severed by a cutting element 5 which is located above the needle 3 with the stitch 7, shows Fig. 2 the separation of the stitch 7 by the cutting element 6, which is located above the opposite needle bed 2.
  • Fig. 2a shows the front and back needle bed 1, 2 of the flat knitting machine 100 with the stitch cutter 150 according to FIG Fig. 1 , The needle 3 is in its basic position according to Fig. 1a ).
  • the needle 3 was driven in the direction of arrow 300 into its transfer position, wherein the needle tongue 32 was opened by the stitch 7 and the stitch 7 and on the needle shaft behind the open needle tongue 32 is located.
  • the mesh 7 was widened by a box spring 34 on the needle 3 to facilitate the immersion of the cutting element 6 into the mesh 7.
  • Fig. 2c it is shown how the cutting element 6 expelled in the direction of arrow 600 and is pushed into the mesh 7.
  • the tip 61 of the cutting element 6 slides in the space between the box spring 34 and the needle shaft 35 and thereby immersed in the expanded mesh 7 a. Subsequently, a retraction movement of the needle 3, whereby the mesh 7 comes into contact with the cutting surface 63 of the cutting element 6 and is thereby separated.
  • Fig. 2d the needle 3 and the cutting element 6 were withdrawn in the directions of arrows 301 and 601 in their basic position.
  • the mesh 7 is cut open and has no contact with the needle 3 more.
  • the cutting elements 5 ', 6' are arranged horizontally for this purpose. The arrangement and design of the needle beds 1, 2 remains unchanged.
  • Fig. 4 shows the transfer of a stitch 7 from a needle 30 to a cutting element 5.
  • the slider 35 of the needle 30 and thus the thread space are closed.
  • the needle 30 was retracted in the direction of the arrow 331 to its transfer position.
  • the mesh 7 is located on the closed slide 35.
  • the cutting element 5 was so far advanced in the direction of arrow 500 that its tip 51 pierces into the thread space 36 and thus between the needle 30 and a leg of the mesh 7.
  • a variant of the acquisition of the mesh 7 is shown by a latch needle 3 on the cutting element 5.
  • the needle 3 has been driven here in the direction of arrow 300 in its mesh transfer position, in which the mesh 7 is located on the open tongue.
  • the tip 51 of the cutting element can dip when the cutting element 5 is driven in the direction of arrow 500.
  • FIGS. 6a ) and b) show a preferred embodiment of a cutting element 5, 6, wherein the cutting element 5, 6 in Fig. 6a ) in the side view and in Fig. 6b ) is shown in plan view.
  • the cutting element 5, 6 has a single cutting surface 53, 63, which operates on one of the two longitudinal sides of the needle.
  • the cutting element could also be equipped with two parallel cutting surfaces which operate simultaneously on both sides of the needle.
  • FIGS. 7 and 8th For example, two applications of cutting stitches during the current knitting process are described, for example, for cutting contours according to a pattern or for making openings for pockets or the like, as well as for design purposes.
  • Fig. 7a shows a double-faced knit piece in which some selected stitches are cut. A stitch of the front and rear needle bed is alternately separated.
  • Fig. 7b is clarified, like the knitted fabric Fig. 7a ) can be produced.
  • row R1 stitches are formed on the front and back needle beds on the needles AJ and aj.
  • row R2 the stitch formed on the needle F of the front needle bed is transferred to the cutting element, not shown here, and cut, before another row of stitches is formed on the front and back needle bed in row R3.
  • row R4 the stitch formed on the needle e of the back needle bed is transferred to a cutting element and severed.
  • Fig. 8a shows another double-sided knit. With this knit, only stitches formed on the front needle bed are cut.
  • the method of making the knitted fabric from Fig. 8a ) is in Fig. 8b ).
  • row R1 stitches are formed on the front and back needle beds with the needles AJ and aj.
  • row R2 the stitch formed on the needle f of the back needle bed is transferred to the needle F of the front needle bed, so that there is a double stitch.
  • a row of stitches is formed in the row R3 on the front and back needle bed with the needles AJ and with the needles aj, but not with the needle f.
  • the stitch formed on the needle F of the front needle bed in row R3 is then transferred to a cutting element and cut.
  • row R7 forming a course of stitches with all the needles of the front and back needle bed except for the needle e.
  • the stitch of the needle E is transferred to a cutting element in row R8 and cut.
  • Fig. 9 illustrates a method of making a plush knit. During manufacture, the picked tuck loops 70 are transferred to the associated cutting elements and cut. All catching loops 70 can be separated or only in certain areas in order to achieve a specific pattern effect.
  • FIG. 10 clarified. It is here a secured final mesh after the Kettelrata formed in a knitted piece. The last stitch is transferred to a cutting element and cut, whereby this last stitch is secured in such a way that no running stitch can occur.

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

Claims (10)

  1. Métier à tricoter rectiligne ayant au moins deux barres (1, 2) à aiguilles en opposition, qui sont pourvues respectivement d'une pluralité de rainures dans lesquelles des aiguilles (3, 4) sont montées coulissantes longitudinalement, caractérisé en ce qu'au moins au-dessus de l'une des barres (1, 2) à aiguilles est montée au moins une barre à éléments de coupe, qui est munie d'une pluralité de rainures dans lesquelles des éléments (5, 6) de coupe sont, pour la séparation de mailles (7) ou de boucles de charge formées sur les aiguilles (3, 4), montés coulissant longitudinalement.
  2. Métier à tricoter rectiligne suivant la revendication 1, caractérisé en ce que le pas des rainures de la au moins une barre d'éléments de coupe correspond au pas des rainures des barres (1, 2) à aiguilles ou à un multiple du pas des rainures des barres (1, 2) à aiguilles.
  3. Métier à tricoter rectiligne suivant l'une des revendications précédentes, caractérisé en ce que la longueur de la au moins une barre à éléments de coupe est égale à la longueur des barres (1, 2) à aiguilles.
  4. Métier à tricoter rectiligne suivant la revendication 1 ou 2, caractérisé en ce que plusieurs barres à éléments de coupe sont disposées les unes à côtés des autres au-dessus d'au moins l'une des barrés (1, 2) à aiguilles, chaque barre à éléments de coupe étant associée à une zone partielle de la barre (1, 2) à aiguilles sous-jacente.
  5. Métier à tricoter rectiligne suivant l'une des revendications précédentes, caractérisé en ce que les mailles (7) ou les boucles de charge à couper peuvent passer des aiguilles (3, 4) d'une barre (1, 2) ) à aiguilles aux éléments (5, 6) de coupe d'une barre à éléments de coupe disposée au-dessus de cette barre (1, 2) à aiguilles.
  6. Métier à tricoter rectiligne suivant l'une des revendications précédentes, caractérisé en ce que les mailles (7) ou les boucles de charge à couper peuvent passer des aiguilles (3, 4) d'une barre (1, 2) à aiguilles aux éléments (5, 6) de coupe d'une barre à éléments de coupe disposée au-dessus de la barre (1, 2) à aiguilles opposée.
  7. Métier à tricoter rectiligne suivant l'une des revendications précédentes, caractérisé en ce que les mailles (7) ou les boucles de charge à couper peuvent, passer par sortie des aiguilles (3, 4), aux éléments (5, 6) de coupe de la au moins une barre à éléments de coupe.
  8. Métier à tricoter rectiligne suivant l'une des revendications 1 à 6, caractérisé en ce que les mailles (7) ou les boucles de charge à couper peuvent, par un mouvement des éléments (5, 6) de coupe de la au moins une barre à éléments de coupe être séparées sur les aiguilles (3, 4) et sans sortie des aiguilles (3, 4).
  9. Métier à tricoter rectiligne suivant l'une des revendications précédentes, caractérisé en ce que les aiguilles (3, 4) ont des ressorts caisses pour écarter les mailles (7) à couper.
  10. Métier à tricoter rectiligne suivant l'une des revendications précédentes, caractérisé en ce que les mailles (7) ou les boucles de charge à couper peuvent être passées sur un élément (5, 6) de coupe reposant sur le bec (31) d'une aiguille, le col d'une aiguille, un ressort caisse, le clapet (32) d'une aiguille ouvert ou fermé ou la glissière (35) fermée d'une aiguille (30) coulissante et/ou être coupées par cet élément (5, 6) de coupe.
EP20120169263 2012-05-24 2012-05-24 Machine à tricoter rectiligne dotée d'éléments de découpe Active EP2666896B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20120169263 EP2666896B1 (fr) 2012-05-24 2012-05-24 Machine à tricoter rectiligne dotée d'éléments de découpe
CN201310197200.6A CN103485067B (zh) 2012-05-24 2013-05-24 带有切割元件的平针针织机

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20120169263 EP2666896B1 (fr) 2012-05-24 2012-05-24 Machine à tricoter rectiligne dotée d'éléments de découpe

Publications (2)

Publication Number Publication Date
EP2666896A1 EP2666896A1 (fr) 2013-11-27
EP2666896B1 true EP2666896B1 (fr) 2014-06-18

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Family Applications (1)

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EP20120169263 Active EP2666896B1 (fr) 2012-05-24 2012-05-24 Machine à tricoter rectiligne dotée d'éléments de découpe

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EP (1) EP2666896B1 (fr)
CN (1) CN103485067B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104178897B (zh) * 2014-08-08 2016-09-07 上海嘉麟杰纺织品股份有限公司 一种具有割圈功能的三重针织层结构及其制备方法
CN113293497B (zh) * 2021-06-02 2022-09-27 东经人造皮草(宁波)有限公司 纬编特高毛切割设备

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1120989A (en) 1913-06-19 1914-12-15 Louis N D Williams Knitting-machine needle.
US1441110A (en) * 1922-10-20 1923-01-02 Nathan Halperin Method and apparatus for producing knitted fabric
DE1153482B (de) 1958-02-28 1963-08-29 Fouquet Werk Frauz & Planck Rundstrickmaschine zur Herstellung von Plueschware
DE2322384C3 (de) 1973-05-04 1985-05-15 Mayer & Cie Gmbh & Co, 7470 Albstadt Verfahren zur Herstellung von gemusterter Plüschware und mehrsystemige Rundstrickmaschine zur Durchführung des Verfahrens
JPS5673146A (en) 1979-11-12 1981-06-17 Wool Dev Int Knitted having pile and knitting method and machine
CN2049645U (zh) * 1989-03-31 1989-12-20 许景贤 针织机之割圈装置
IT1307796B1 (it) * 1999-09-14 2001-11-19 Pinzauti Lucia Dispositivo e procedimento atto alla costruzione di tessuti a magliacon la formazione di pelo tagliato su maglia rovescia, i cui ranghi di
US7614255B2 (en) 2005-04-06 2009-11-10 Groz-Beckert Kg Cutting needle
CN201003096Y (zh) * 2005-12-15 2008-01-09 覃唯刚 毛绒针织机毛绒割断装置

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Publication number Publication date
CN103485067A (zh) 2014-01-01
EP2666896A1 (fr) 2013-11-27
CN103485067B (zh) 2015-08-19

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