EP3702501B1 - Verfahren zum stricken von dreidimensionalem gewebe mit variabler dicke durch eine flachstrickmaschine - Google Patents

Verfahren zum stricken von dreidimensionalem gewebe mit variabler dicke durch eine flachstrickmaschine Download PDF

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Publication number
EP3702501B1
EP3702501B1 EP19160226.7A EP19160226A EP3702501B1 EP 3702501 B1 EP3702501 B1 EP 3702501B1 EP 19160226 A EP19160226 A EP 19160226A EP 3702501 B1 EP3702501 B1 EP 3702501B1
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Prior art keywords
knitting
cam
dimensional fabric
knitting machine
gap
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EP19160226.7A
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English (en)
French (fr)
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EP3702501A1 (de
Inventor
Chih-Chiang Lee
Jeng-Pin Cheng
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Pai Lung Machinery Mill Co Ltd
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Pai Lung Machinery Mill Co Ltd
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    • 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
    • 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
    • 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
    • D04B1/22—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 specially adapted for knitting goods of particular configuration
    • 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
    • D04B15/32—Cam systems or assemblies for operating knitting instruments
    • D04B15/36—Cam systems or assemblies for operating knitting instruments for flat-bed knitting machines
    • D04B15/362—Cam systems or assemblies for operating knitting instruments for flat-bed knitting machines with two needle beds in V-formation
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2403/00—Details of fabric structure established in the fabric forming process
    • D10B2403/02—Cross-sectional features
    • D10B2403/022—Lofty fabric with variably spaced front and back plies, e.g. spacer fabrics
    • D10B2403/0221—Lofty fabric with variably spaced front and back plies, e.g. spacer fabrics with at least one corrugated ply

Definitions

  • the present invention relates to a method for knitting a three-dimensional fabric, and particularly relates to a method for knitting a three-dimensional fabric with variable thickness through a flat knitting machine.
  • the existing knitting of a three-dimensional fabric with variable thickness is generally realized by a warp knitting machine, as disclosed in patents of CN 102704180A , CN 102978823A and CN 105220347A .
  • CN 105 442 163 B discloses a knitting method for spacer fabrics of different thicknesses with concave-convex effect. Disclosed is the knitting by a computerized flat knitting machine, through changing the length of the loops fed with spacer wire to achieve different thicknesses in the transverse and longitudinal directions. Therefore, this uneven effect is not achieved by changing the thickness of the raw material, but by changing the fabric structure to achieve intervals with various thicknesses. This kind of fabric has an obvious uneven effect on the cloth surface, which adds to the three-dimensional sense of the fabric.
  • EP 1 340 847 A1 discloses a flat knitting machine comprising a number of needles arranged in needle grooves formed on needle beds in such a manner as to be freely advanced or retracted; sinkers, arranged between the needles, to work to form loops; and at least a pair of front and back needle beds having a front edge portion and arranged to confront each other across a needle bed gap, wherein the sinker and the front edge portion of the needle bed are both supported on the needle bed in such a manner as to be movable in an advancing and retracting direction of the needle and also control means is provided for controlling an advanced or retracted motion of both of the sinker and the front edge portion of the needle bed, to adjust a dimension of the needle bed gap between the front and back needle beds.
  • US 4 442 683 A discloses a stitch pressing device for flat knitting machine consists essentially of a combination of stitch pressing means and sub-presser means, both provided on a carriage.
  • US20130295812A1 discloses a knit fabric having a modified knit structure comprising a first layer of jersey knit fabric and a second layer of jersey knit fabric, wherein the first and second layers of jersey knit fabric are joined to each other by a third layer of tuck stitches, and wherein the first and second jersey stitch layers include at least one continuous strand of bare rubber and a plurality of continuous strands selected from the group consisting of continuous strands of bare rubber and continuous strands of non-elastic yarn, and the third layer of tuck stitches are made of continuous strands of non-elastic yarn, knit together into the fabric so as to hold the first and second jersey stitch layers together.
  • the main purpose of the present invention is to solve the problem that the existing flat knitting machine cannot knit the three-dimensional fabric with variable thickness by promptly changing the gap size by the passage of the two cam groups.
  • the present invention provides a method for knitting a three-dimensional fabric with variable thickness through a flat knitting machine, including the following 25 steps:
  • the step (3) includes a substep: controlling a flat knitting machine yarn feeder to adjust a position of a yarn feeding arm in the gap according to the gap size.
  • the step (4) includes a substep: controlling the starting cam system and the middle cam system of the other one of the plurality of knock-over bit cam to implement displacement and adjustment according to the gap size after the previous step.
  • the step (4) includes a substep: controlling the flat knitting machine yarn feeder to adjust the position of the yarn feeding arm in the gap based on the gap size after the previous step.
  • the step (4) includes a substep: controlling at least one flat knitting machine mangling/stitch presser device to adjust a mangling position based on the gap size after the previous step.
  • the present invention comprises the following characteristics: the method disclosed in the present invention enables the flat knitting machine to achieve the knitting of the three-dimensional fabric with variable thickness.
  • the present invention provides a method 500 for knitting a three-dimensional fabric with variable thickness through a flat knitting machine.
  • a flat knitting machine structure 100 of the present invention is described.
  • a gap 10 of the present invention is defined by a plurality of knock-over bits 16 facing each other in two needle beds 11 and 12 which are disposed in the flat knitting machine structure 100.
  • the flat knitting machine structure 100 includes a plurality of cam systems 13 and 14 for changing a gap size, a plurality of flat knitting machine yarn feeders 20 change yarn feeding positions according to the gap size, and a plurality of flat knitting machine stitch presser devices 40 and 48 change mangling positions according to the gap size.
  • the plurality of cam systems 13 (or 14) are used in a single knitting procedure.
  • a plurality of knitting needles 15 and the plurality of knock-over bits 16 on each of the needle beds 11 (or 12) are respectively controlled by each of the plurality of cam systems 13 (or 14).
  • Each of the plurality of cam systems 13 (or 14) comprises at least one knock-over bit cam 132 to control the plurality of knock-over bits 16.
  • the knock-over bit cam 132 changes the positions of the plurality of knock-over bits 16 in the knitting process, and the flat knitting machine promptly changes the gap size in the knitting process according to knitting requirements.
  • the plurality of cam systems 13 (or 14) are sequentially assembled into a cam group 18 (or 19).
  • the cam group 18 of the present invention is formed by three of the cam systems 13.
  • the three of the cam systems 13 are defined as a starting cam system 181, a middle cam system 182 and a tail cam system 183 in sequence.
  • the flat knitting machine belongs to a weft knitting machine.
  • the motion direction of the machine head is reverse displacement but not one-way. Briefly, the machine head displaces repeatedly along a straight track, as shown in directions 590 and 591 in Figs. 2 and 3 . Therefore, the cam systems 13 defined as the starting cam system 181 in the previous knitting process would be defined as the tail cam system 183 is in the next knitting process.
  • the other one of the cam groups 19 also comprises three of the cam systems 14 defined as a starting cam system 191, a middle cam system 192 and a tail cam system 193.
  • the three-dimensional fabric 90 of the present invention is formed by a first piece of knitting 91, a second piece of knitting 92 which is spaced from the first piece of knitting 91, and a supporting yarn 93 which is separately interwoven with the first piece of knitting 91 and the second piece of knitting 92, wherein the supporting yarn 93 may be a nylon yarn.
  • the height of the supporting yarn 93 is the thickness of the three-dimensional fabric 90.
  • the figure shows the three-dimensional fabric 90 with variable thickness. The thickness is thinner upon knitting in the previous knitting process 94, and the thickness is thicker upon knitting in the subsequent knitting process 95.
  • the method 500 includes the following steps:
  • step (1) 51 the two cam groups 18 and 19 are controlled to simultaneously move relative to the two needle beds 11 and 12.
  • the starting cam system 181 of the cam group 18 drives part of the plurality of knitting needles 15 on the needle bed 11 to accept yarn feeding to knit the first piece of knitting 91.
  • the flat knitting machine stitch presser device 40 disposed correspondingly to the cam group 19 performs a mangling action.
  • the two cam groups 18 and 19 make displacement continuously, and the middle cam system 192 of the other one of the cam groups 19 drives part of the plurality of knitting needles 15 on the needle bed 12 to accept yarn feeding to knit the second piece of knitting 92.
  • the plurality of knitting needles 15 on the needle bed 12 knit the second piece of knitting92, which are disposed in opposition to the plurality of knitting needles 15 on the needle bed 11 to knit the first piece of knitting 91.
  • the flat knitting machine stitch presser device 48 disposed correspondingly to the cam group 18 performs a mangling action. Based on this, the step (3) 53 is conducted after the second piece of knitting 92 is completed.
  • the two cam groups 18 and 19 make displacement continuously, and the two tail cam systems 183 and 193 simultaneously drive the plurality of knitting needles 15 of the two needle beds 11 and 12, and accept yarn feeding to knit the supporting yarn 93, wherein the two ends of the supporting yarn 93 are respectively interwoven with the first piece of knitting 91 and the second piece of knitting 92. Furthermore, in the implementation process of the step (3) 53, the knock-over bit cams 132 of the two tail cam systems 183 and 193 make displacement according to the set length of the supporting yarn 93, i.e., the two tail cam systems 183 and 193 promptly adjust the gap size according to the set length of the supporting yarn 93 in the knitting process. When the supporting yarn 93 is shorter, the gap size is smaller for knitting.
  • the knock-over bit cams 132 of the two tail cam systems 183 and 193 respectively accept the control of a control device, wherein the control device controls according to a pre-memory knitting process.
  • the step (4) 54 is conducted after the step (3) 53 is completed. If the machine head travels to the end at the time, the machine head displaces reversely, as shown in Fig. 3 . Meanwhile, the two starting cam systems 181 and 191 of the two cam groups 18 and 19 are replaced by the tail cam systems 183 and 193 in the previous knitting process to be used as the starting cam systems 181 and 191 in this knitting process. Similarly, the starting cam systems 181 and 191 in the previous knitting process are used as the tail cam systems 183 and 193 in this knitting process. Next, the step (1) 51 to the step (3) 53 are conducted again until the three-dimensional fabric 90 is accomplished. The implementation process of the step (1) 51 to the step (3) 53 is described previously, and will not be repeated herein.
  • the step (3) 53 includes a substep 531: controlling the flat knitting machine yarn feeder 20 to adjust a position of the yarn feeding arm 26 in the gap 10 according to the gap size.
  • the plurality of knitting needles 15 does not generate problems such as abnormal yarn snagging due to the change of the gap 10 in the process of the step (3) 53.
  • the subsequent knitting process 95 coordinates with the change of the gap 10 in the previous knitting process 94.
  • the step (4) 54 includes a substep 541: controlling the starting cam systems 181 and 191 and the middle cam systems 182 and 192 of the other of the knock-over bit cams 132 to implement displacement and adjustment according to the gap size after the previous step.
  • the step (4) 54 includes a substep 542: controlling the flat knitting machine yarn feeder 20 to adjust the position of the yarn feeding arm 26 in the gap 10 based on the gap size after the previous step.
  • the step (4) 54 includes a substep 543: controlling at least one flat knitting machine stitch presser device 40 (or 48) to adjust a mangling position based on the gap size after the previous step.
  • the flat knitting machine is not limited to implement a single thickness but variable thickness according to the design of the three-dimensional fabric 90 in the knitting process.

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

Claims (5)

  1. Ein Verfahren (500) zum Stricken eines dreidimensionalen Stoffes (90) mit variabler Dicke durch eine Flachstrickmaschine, umfassend die folgenden Schritte:
    Schritt 1 (51): Bewegen von zwei Nockengruppen (18, 19) auf zwei Nadelbetten (11, 12), die relativ zueinander angeordnet sind, und Antreiben einer Vielzahl von Stricknadeln (15) zum Stricken eines ersten Strickstücks (91) durch ein Startnockensystem (181, 191), das in einer der beiden Nockengruppen (18 oder 19) enthalten ist;
    Schritt 2 (52): Bewegen der beiden Nockengruppen (18, 19) auf die beiden Nadelbetten (11, 12), die relativ zueinander angeordnet sind, und Antreiben der Vielzahl von Stricknadeln (15) zum Stricken eines zweiten Strickstücks (92) durch ein mittleres Nockensystem (182, 192), das in der anderen der beiden Nockengruppen (18 oder 19) enthalten ist;
    Schritt 3 (53): Bewegen der beiden Nockengruppen (18, 19) auf die beiden Nadelbetten (11, 12), die relativ zueinander angeordnet sind, und Antreiben der Vielzahl von Stricknadeln (15) zum Stricken eines Stützfadens (93) durch zwei Schwanznocken-Systeme (183, 193), die jeweils in den beiden Nockengruppen (18, 19) enthalten sind, wobei zwei Enden des Stützfadens (93) jeweils mit dem ersten Strickstück (91) und dem zweiten Strickstück (92) verwoben sind, und Bewegen jedes der Umschlagnocken (132) der Schwanznocken-Systeme (183, 193), um die Größe eines Spalts (10) zu ändern, der einer eingestellten Stricklänge des Stützfadens (93) entspricht, um so eine Dicke des dreidimensionalen Gewebes (90) entlang der Längenänderung des Stützfadens (93) in einem Strickprozess (94) prompt zu ändern; und
    Schritt 4 (54): Wiederholung von Schritt 1 (51) bis Schritt 3 (53) zur Fertigstellung des dreidimensionalen Gewebes (90).
  2. Das Verfahren (500) zum Stricken des dreidimensionalen Stoffes (90) mit variabler Dicke durch die Flachstrickmaschine nach Anspruch 1, wobei der Schritt 3 (53) einen Teilschritt (531) umfasst: Steuern einer Flachstrickmaschinen-Fadenzuführung (20), um eine Position eines Fadenzuführungsarms (26) in dem Spalt (10) entsprechend der Größe des Spalts (10) einzustellen.
  3. Das Verfahren (500) zum Stricken des dreidimensionalen Stoffes (90) mit variabler Dicke durch die Flachstrickmaschine nach Anspruch 1, wobei der Schritt 4 (54) einen Unterschritt (541) umfasst: Steuern des Anfangsnockensystems (181, 191) und des mittleren Nockensystems (182, 192) des anderen der Vielzahl von Umschlagnocken (132), um eine Verschiebung und Einstellung gemäß der Größe des Spalts (10) nach dem vorherigen Schritt zu implementieren.
  4. Das Verfahren (500) zum Stricken des dreidimensionalen Stoffes (90) mit variabler Dicke durch die Flachstrickmaschine nach Anspruch 3, wobei der Schritt 4 (54) einen Teilschritt (542) umfasst: Steuern einer Flachstrickmaschinen-Fadenzuführung (20), um eine Position eines Fadenzuführungsarms (26) in dem Spalt (10) auf der Grundlage der Größe des Spalts (10) nach dem vorherigen Schritt einzustellen.
  5. Das Verfahren (500) zum Stricken des dreidimensionalen Stoffes (90) mit variabler Dicke durch die Flachstrickmaschine nach Anspruch 4, wobei der Schritt 4 (54) einen Unterschritt (543) umfasst: Steuern mindestens einer Flachstrickmaschinen-Maschenandrückervorrichtung (40), um eine Manglingposition basierend auf der Größe des Spalts (10) nach dem vorherigen Schritt einzustellen.
EP19160226.7A 2019-03-01 2019-03-01 Verfahren zum stricken von dreidimensionalem gewebe mit variabler dicke durch eine flachstrickmaschine Active EP3702501B1 (de)

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EP19160226.7A EP3702501B1 (de) 2019-03-01 2019-03-01 Verfahren zum stricken von dreidimensionalem gewebe mit variabler dicke durch eine flachstrickmaschine

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EP19160226.7A EP3702501B1 (de) 2019-03-01 2019-03-01 Verfahren zum stricken von dreidimensionalem gewebe mit variabler dicke durch eine flachstrickmaschine

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EP3702501B1 true EP3702501B1 (de) 2022-02-16

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Publication number Priority date Publication date Assignee Title
EP4089217A1 (de) * 2021-05-10 2022-11-16 Pai Lung Machinery Mill Co., Ltd. Verfahren zum stricken und formen von gestricken mit unterschiedlicher dicke durch flachstrickmaschine und gestricke davon

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57183451A (en) * 1981-04-28 1982-11-11 Shima Idea Center Knitted cloth press apparatus in v bed traverse knitting machine
JP3886904B2 (ja) * 2000-12-04 2007-02-28 株式会社島精機製作所 横編機
WO2012162540A1 (en) * 2011-05-24 2012-11-29 Lee David E Knitted fabrics and methods of producing the same
CN102704180A (zh) 2012-06-04 2012-10-03 江南大学 一种针床可在线移动的生产异型间隔织物的双针床经编机
CN102978823A (zh) 2012-11-23 2013-03-20 福建福联精编有限公司 一种异形三维立体针织物及其制造方法
DE102014108987B3 (de) 2014-06-26 2015-10-22 Karl Mayer Textilmaschinenfabrik Gmbh Wirkware, Verfahren zum Erzeugen einer Wirkware und Kettenwirkmaschine
CN105442163B (zh) * 2015-12-25 2018-01-30 江南大学 具有凹凸效应的不同厚度间隔织物的编织方法

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