EP3421653B1 - Barre pour les éléments de tricotage d'un métier à mailles jetées - Google Patents

Barre pour les éléments de tricotage d'un métier à mailles jetées Download PDF

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Publication number
EP3421653B1
EP3421653B1 EP17177764.2A EP17177764A EP3421653B1 EP 3421653 B1 EP3421653 B1 EP 3421653B1 EP 17177764 A EP17177764 A EP 17177764A EP 3421653 B1 EP3421653 B1 EP 3421653B1
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EP
European Patent Office
Prior art keywords
rods
main body
knitting element
bar according
longitudinal direction
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
EP17177764.2A
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German (de)
English (en)
Other versions
EP3421653A1 (fr
Inventor
Tim Grundmann
Klaus Kollek
Torsten BACK
Matthias HOPPE
Martin Schorlemmer
Frank Harmeling
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.)
Karl Mayer R&D GmbH
Original Assignee
Karl Mayer Textilmaschinenfabrik GmbH
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 Karl Mayer Textilmaschinenfabrik GmbH filed Critical Karl Mayer Textilmaschinenfabrik GmbH
Priority to EP17177764.2A priority Critical patent/EP3421653B1/fr
Priority to CN201710864342.1A priority patent/CN109112714B/zh
Publication of EP3421653A1 publication Critical patent/EP3421653A1/fr
Application granted granted Critical
Publication of EP3421653B1 publication Critical patent/EP3421653B1/fr
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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
    • D04B27/10—Devices for supplying, feeding, or guiding threads to needles
    • D04B27/24—Thread guide bar assemblies
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
    • D04B27/06—Needle bars; Sinker bars

Definitions

  • the invention relates to an active element carrier with a body which has a longitudinal direction, and an active element receiving.
  • Such an active element carrier is used in a warp knitting machine to carry knitting tools or knitting elements.
  • the knuckle carrier usually has to be accelerated and decelerated once in one direction and then accelerated and decelerated in the opposite direction in a stitch forming operation.
  • motion in one direction is added to the movement in one direction. It is therefore desirable to keep the mass of the active element carrier as low as possible.
  • Warp knitting machines are currently produced with working widths of several meters.
  • the active element carrier must then have a length which corresponds to the working width.
  • the subdivision of the active element carrier in several sections in the longitudinal direction is possible, but brings with it other difficulties.
  • DE 10 2007 038 589 A1 shows a further active element carrier with a body on which an active element receptacle is arranged.
  • the body is formed of a carbon fiber reinforced plastic material and the active element receiving is formed in a plastic order.
  • DE 10 2010 045 049 B4 shows a method for producing a Wirktechnikmaschinebarre using two different materials, wherein a first material for the body and a second material for the active element receiving is provided. Both materials are cured together in a tool.
  • EP 2 636 781 A1 shows a guide bar of a knitting machine in which a body is connected to a guide frame by a positive connection.
  • CN 101463530 A shows a bar assembly of a warp knitting machine with a base are fixed to the carrier, which form rails for ingots on which guide pins are attached. The bars can be pushed back and forth in the rails.
  • EP 1 770 194 A1 shows a further knitting tool bar of a knitting machine, in which a body of a fiber-reinforced plastic is provided, which extends in the longitudinal direction.
  • the body is composed of several elements, each of which extends in the longitudinal direction.
  • EP 2 770 096 A1 shows a plastic Wirkwerkmaschinebarre enclosing a cavity. In the cavity, a reinforcement is provided which divides the cavity into two parts.
  • the invention has for its object to keep the volume during operation of the warp knitting machine small.
  • a skeleton structure has a plurality of interconnected elements that have a primary supporting function.
  • the skeleton structure does not form a closed surface, at least to the outside, which acts as a membrane.
  • openings are formed between the elements of the skeleton structure so that the skeleton structure has a surface that is not closed. Accordingly, the risk of sound generation by closed surfaces, which could generate sound at a corresponding vibration exposure, minimized.
  • a body builds relatively easily. Areas remain free of material between the elements. These "empty" areas thus contribute nothing to the mass of the active element carrier, so that one by leaving out material to a small Total mass of the active element carrier can come.
  • the corpus rods form elements with the primary bearing function.
  • fiber-reinforced plastic rods extend in the longitudinal direction, which are connected to the skeleton structure.
  • the fiber-reinforced plastic rods in which, for example, the plastic can be reinforced by carbon fibers, have a very high longitudinal stiffness. A change in length, for example due to the influence of heat, is thus negligibly small.
  • the fiber-reinforced plastic rods can also positively influence the mass-specific flexural rigidity, the mass-specific transverse rigidity and the mass-specific torsional rigidity.
  • At least one plastic rod is formed continuously over the length of the active element carrier.
  • the skeleton structure is prevented from stretching in the longitudinal direction.
  • At least one plastic rod has an interruption in the longitudinal direction, wherein at least one other plastic rod bridges the interruption. Even with this, a very high longitudinal rigidity can be achieved and a change in length due to external influences, for example heat, can be reliably kept very small.
  • the skeleton structure has a light metal structure.
  • light metal for example aluminum or magnesium
  • the body has a plurality of juxtaposed body elements which have body posts and are interconnected. This facilitates the production.
  • the body elements may be made for example by die casting. Another possibility is to print the carcass elements as three-dimensional objects. In both cases, a shorter overall length is easier to produce than a longer overall length. The entire length of the active element carrier is then achieved by assembling a plurality of such body elements.
  • the skeleton structure is formed in a plane on which the longitudinal direction is perpendicular, in the manner of a polygon.
  • the skeletal structure may then enclose a polygonal cavity, further contributing to a low overall mass.
  • At least two plastic rods are arranged at corners of the polygon.
  • more than two plastic rods are used.
  • four plastic rods can be arranged at the four corners of the polygon, resulting in excellent flexural rigidity, excellent transverse shear stiffness, and excellent torsional rigidity.
  • the skeleton structure has first body pillars extending in a width direction transverse to the longitudinal direction and second body pillars extending at an angle in the range of 30 ° to 60 °, in particular from 40 ° to 50 ° to the longitudinal direction.
  • the second carcass rods extend at an angle of 45 ° to the longitudinal direction.
  • the first corpus rods then form "slices", so to speak, which are connected to each other by the second corpus rods. Since the second carcass rods are at an angle to the longitudinal direction, a longitudinal expansion of the second carcass rods now leads to a smaller one Compressive stress in the plastic rods when the second body rods expand or contract due to, for example, a temperature change.
  • the compressive stress can be readily absorbed by the plastic rods.
  • a corresponding dimensional change results in the width direction. This is not critical.
  • the skeleton structure has mounting areas for machine elements and a density of the second bars is greater in the region of the attachment areas than a density of the second bars between the attachment areas. This takes into account the fact that the power flow between the attachment areas is less than at the attachment areas. For example, levers of the warp knitting machine can act on the attachment areas.
  • the body has an upper side and a lower side, and the second body rods are arranged on the upper side and / or on the lower side. This takes account of the burden situation.
  • the second carcass rods intersect at least one further first carcass rod between two first carcass rods. This results in a very stable skeleton structure in the manner of a truss.
  • first body rods and the second body rods intersect at least one longitudinal edge of the body at a distance from this longitudinal edge and form a multi-finger arrangement. If a first carcass rod and a second carcass rod intersect, then there are two fingers on the longitudinal edge. If two second carcass rods and a first carcass cutting intersect, then there are three fingers in the region of the longitudinal edge of the carcass.
  • the active element receptacle is supported on the multi-finger arrangement. This increases the stability of the active element recording.
  • the body 2 is formed as a skeleton structure, that is, it has a plurality of body rods 4-11.
  • the carcass rods are interconnected at junctions 12-15. They form, so to speak, a framework-like structure.
  • Fiber reinforced plastic rods 16-19 are connected to the skeleton structure.
  • the plastic rods 16-19 are preferably formed as pultruded rods of unidirectional fiber reinforced plastic (CFRP). They have a very high longitudinal stiffness and have virtually no relevant thermal expansion in the longitudinal direction.
  • the length of the plastic rods 16-19 preferably corresponds to the entire length of the active element carrier 1. It can also be provided that at least one of the plastic rods 16-19 is divided in the longitudinal direction and thus an interruption is provided, wherein at least one other plastic rod interruption bridged.
  • the carcass rods 4-11 are formed at least predominantly of a light metal.
  • light metal for example, aluminum or magnesium is considered.
  • the skeleton structure of the body 2 is formed as a light metal structure.
  • the rods 4-11 can be assembled to form individual body elements, wherein a plurality of such body elements are arranged side by side in the longitudinal direction.
  • the body elements may be glued together, for example.
  • the carcass elements are also connected to the plastic rods 16-19 and are held together by the plastic rods 16-19 in the longitudinal direction. It can be provided that the plastic rods 16-19 are connected with a certain bias to the body elements.
  • a warp knitting machine typically has, for each knit element carrier, a series of levers which control the movement of the knit element carriers. You can provide one lever each body element.
  • a mounting portion 20 For attachment of the body to such levers a mounting portion 20 is provided, in the example, a threaded screw can be screwed. In order to increase a thread length, the attachment region may have a thickening 21.
  • Fig. 1 shows the body in a sectional plane on which the longitudinal direction of the active element carrier is vertical. It can be seen that the skeleton structure is formed in the manner of a polygon with four corners. This does not mean a polygon in the mathematically strict sense. The long sides of the polygon can certainly also have a curvature, as the body post 7 shows. The plastic rods 16-19 are arranged at the corners of the polygon.
  • the skeleton structure of the body 2 has first bars 4-7 which extend in a width direction, ie transversely to the longitudinal direction of the active element carrier. Only these 4-7 corpus sticks are in Fig. 1 shown. These corpus rods form a kind of "disk" of the skeleton structure.
  • the first Korpusstäben 4-7 second body rods 8-11, which extend at an angle of ⁇ 45 ° to the longitudinal direction.
  • the second body rods 8 extend at an angle of -45 ° and the second body rods 9 extend at an angle of 45 ° to the longitudinal direction.
  • the longitudinal direction is in Fig. 3 indicated by an arrow 22.
  • the first corpus rods 4-7 run in the width direction, ie perpendicular to the longitudinal direction, ie at an angle of 90 °.
  • the width direction is in Fig. 3 represented by a dimension line 23.
  • the active element carrier 1 has an upper side and a lower side.
  • the term 'top' and 'bottom' refers to the representation of the Fig. 1 , When using the active element carrier 1 in a warp knitting machine different orientations may result.
  • the second body post 8-11 are arranged only at the top and at the bottom, as in Fig. 2 can recognize.
  • the second body rods 8-11 By arranging the second body rods 8-11 at an angle, on the one hand, it is ensured that the body 2 has the necessary cohesion and sufficient flexural rigidity, transverse thrust and torsional rigidity in the longitudinal direction. On the other hand, the risk of longitudinal expansion due to the influence of heat is kept small. If the second body rods 8-11 expand or contract under the influence of temperature, then only part of this expansion takes place parallel to the longitudinal direction 22. The tension generated thereby can be absorbed by the plastic rods 16-19. In the direction of width 23, a change in dimension may result. This is not critical.
  • the density of the second body rods 8, 9 in the region of the attachment regions 20 is greater than between the attachment regions 20 or outside of the attachment regions 20.
  • the power flow between the attachment regions 20 is less than at the attachment regions 20th .
  • the second body rods 8, 9 are arranged such that they intersect at least one further body stem 7 between two first body rods 7 so that they form a further node 24 here.
  • the first body rods 7 and the second body rods 8, 9 intersect with one another certain distance, so that in the region of the longitudinal edges 25, 26, the first carcass rods 7 and the second carcass rods 8, 9 each form a multi-finger arrangement.
  • the active element receptacle is supported on these multiple-finger arrangements.
  • the use of light metal body members to form the body 2 in skeleton construction allows the body 2 to be designed for high lateral bending stiffness, high transverse shear stiffness, and sufficiently high torsional rigidity. There is little longitudinal stiffness to avoid thermal expansion in the longitudinal direction. As a result, sound-emitting surfaces are kept small.
  • the individual length of a body element can correspond to the distance between two levers.
  • the lightweight design allows good workability for functional surfaces and fasteners, such as threads. You can choose the bar distribution to match the power flow, for example, thicker on the lever attachments, where there is a force application, and thinner between the levers.
  • the active element receptacle 3 may be formed as an extruded plastic profile. This results in good machinability and low density.
  • the length can be selected according to the length of the active element carrier.
  • the plastic rods 16-19 act on the one hand as a longitudinal reinforcement and also produce a very high flexural rigidity of the body 2.
  • the ratio between the plastic rods 16-19 and the body rods 4-11 is suitably chosen so that the longitudinal stiffness of the body 2 to a very large Share is dominated by the plastic rods 16-19.
  • Fig. 4 shows a modified embodiment of an active element carrier 1.
  • the angle may also be more generally in a range of 45 ° to 75 °, in particular 55 ° to 65 °. 60 ° are preferred.
  • the body rods 7-9, 27, 28 may be formed of aluminum, which are held together in the longitudinal direction of the active element carrier 1 by the plastic rods 16-19.
  • the embodiment according to Fig. 4 results in a "concertina-like" training in which the carcass rods 27, 28 contribute little to the longitudinal stiffness.
  • the longitudinal rigidity is achieved by the plastic rods 16-19.
  • All embodiments have a skeleton structure in which the size of sound-emitting surfaces is minimized. Even at higher working speeds, this results in a relatively low noise level.

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

Claims (14)

  1. Barre pour éléments de tricotage (1) avec un corps (2), qui présente une direction longitudinale (22) et un logement pour éléments de tricotage (3), caractérisée en ce que le corps (2) comporte une structure d'ossature, qui comporte une pluralité de barrettes de corps (4-11, 27, 28), qui sont reliées entre elles aux points de nouage (12-15, 24).
  2. Barre pour éléments de tricotage selon la revendication 1, caractérisée en ce que les barrettes de matière plastique renforcées avec des fibres (16-19) passent dans la direction longitudinale (22), qui sont reliées à la structure d'ossature.
  3. Barre pour éléments de tricotage selon la revendication 2, caractérisée en ce qu'au moins une barre en matière plastique (16-19) est constituée continue sur la longueur de la barre pour éléments de tricotage.
  4. Barre pour éléments de tricotage selon la revendication 2 ou 3, caractérisée en ce qu'au moins une barre en matière plastique (16-19) comporte dans la direction longitudinale (22) une interruption, sachant qu'au moins une autre barre en plastique surmonte l'interruption.
  5. Barre pour éléments de tricotage selon l'une quelconque des revendications 1 à 4, caractérisée en ce que la structure d'ossature comporte une structure en métal léger.
  6. Barre pour éléments de tricotage selon l'une quelconque des revendications 1 à 5, caractérisée en ce que le corps (2) comporte une pluralité d'éléments de corps disposés les uns à côté des autres, qui comportent des barrettes de corps et sont reliés entre eux.
  7. Barre pour éléments de tricotage selon l'une quelconque des revendications 1 à 6, caractérisée en ce que la structure d'ossature est constituée à la manière d'un polygone dans un plan sur lequel la direction longitudinale (22) est perpendiculaire.
  8. Barre pour éléments de tricotage selon la revendication 7, dans la mesure où celle-ci est dépendante de l'une quelconque des revendications 2 à 6, caractérisée en ce que au moins deux barrettes en matière plastique (16-19) sont disposées aux angles du polygone.
  9. Barre pour éléments de tricotage selon l'une quelconque des revendications 1 à 8, caractérisée en ce que la structure d'ossature comporte des barrettes de corps, qui passent sous un angle de 45° à 75°, en particulier sous un angle de 55° à 65°, par rapport à la direction longitudinale (22).
  10. Barre pour éléments de tricotage selon l'une quelconque des revendications 1 à 9, caractérisée en ce que la structure d'ossature comporte des premières barrettes en matière plastique (4-7), qui passent dans une direction de largeur (23) transversalement à la direction longitudinale (22) et des deuxièmes barrettes de corps (8-11), qui passent sous un angle se situant dans la plage de 30° à 60°, en particulier de 40° à 50°, par rapport à la direction longitudinale (22).
  11. Barre pour éléments de tricotage selon la revendication 10, caractérisée en ce que la structure d'ossature comporte des zones de fixation (20) pour des éléments de machine et une densité des deuxièmes barrettes de corps (8-11) dans un secteur des zones de fixation (20) est plus grande qu'une densité de deuxièmes barrettes de corps (8-11) entre les zones de fixation (20).
  12. Barre pour éléments de tricotage selon la revendication 10 ou 11, caractérisée en ce que le corps (2) comporte une face supérieure et une face inférieure et les deuxièmes barrettes de corps (8-11) sont disposées sur la face supérieure et/ou sur la face inférieure.
  13. Barre pour éléments de tricotage selon l'une quelconque des revendications 10 à 12, caractérisée en ce que les premières barrettes de corps (4-7) et les deuxièmes barrettes de corps (8-11) se croisent dans le secteur d'au moins un bord longitudinal (25, 26) du corps (2) à distance de ce bord longitudinal (25,26) et forment un système à doigts multiples.
  14. Barre pour éléments de tricotage selon la revendication 13, caractérisée en ce que le logement pour éléments de tricotage (3) est appuyé sur le système à doigts multiples.
EP17177764.2A 2017-06-26 2017-06-26 Barre pour les éléments de tricotage d'un métier à mailles jetées Active EP3421653B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP17177764.2A EP3421653B1 (fr) 2017-06-26 2017-06-26 Barre pour les éléments de tricotage d'un métier à mailles jetées
CN201710864342.1A CN109112714B (zh) 2017-06-26 2017-09-22 编织元件载体

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17177764.2A EP3421653B1 (fr) 2017-06-26 2017-06-26 Barre pour les éléments de tricotage d'un métier à mailles jetées

Publications (2)

Publication Number Publication Date
EP3421653A1 EP3421653A1 (fr) 2019-01-02
EP3421653B1 true EP3421653B1 (fr) 2019-09-18

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EP17177764.2A Active EP3421653B1 (fr) 2017-06-26 2017-06-26 Barre pour les éléments de tricotage d'un métier à mailles jetées

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EP (1) EP3421653B1 (fr)
CN (1) CN109112714B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110344172B (zh) * 2019-08-06 2023-09-08 宁波丽成复合材料制品有限公司 一种高速精编机纺针碳纤维底座

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004023802B3 (de) * 2004-05-13 2005-12-22 Liba-Maschinenfabrik Gmbh Kettenwirkmaschine mit Bauelementen aus Kunststoffmaterial
EP1770194A1 (fr) * 2005-09-28 2007-04-04 KARL MAYER TEXTILMASCHINENFABRIK GmbH Barre pour les éléments de tricotage d'un métier à mailles jetées
DE102006014147B4 (de) 2006-03-28 2008-01-24 Karl Mayer Textilmaschinenfabrik Gmbh Verfahren zum Herstellen einer Kunststoff-Wirkwerkzeugbarre und Kunststoff-Wirkwerkzeugbarre
DE102007038589B4 (de) * 2007-08-16 2014-02-20 Karl Mayer Textilmaschinenfabrik Gmbh Barre für eine Kettenwirkmaschine
CN101463530B (zh) * 2008-11-28 2011-12-28 常州市润源经编机械有限公司 经编机梳栉机构
EP2230343B1 (fr) * 2009-03-19 2011-09-28 Karl Mayer Textilmaschinenfabrik GmbH Barre pour éléments de tricotage à mailles jetées
DE102010045049B4 (de) 2010-09-10 2012-10-04 Karl Mayer Textilmaschinenfabrik Gmbh Verfahren zum Herstellen einer Wirkwerkzeugbarre
EP2636781A1 (fr) 2012-03-09 2013-09-11 Karl Mayer Textilmaschinenfabrik GmbH Barre d'alimentation d'une machine rectiligne
EP2770096B1 (fr) * 2013-02-22 2015-09-02 Karl Mayer Textilmaschinenfabrik GmbH Barre en matériau synthétique pour des éléments de tricotage
CN204608327U (zh) * 2015-05-12 2015-09-02 卡尔迈耶（中国）有限公司 经编机的贾卡梳栉
EP3095903B1 (fr) * 2015-05-18 2017-06-28 Karl Mayer Textilmaschinenfabrik GmbH Métier à tricoter à chaîne

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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Publication number Publication date
CN109112714B (zh) 2020-08-14
CN109112714A (zh) 2019-01-01
EP3421653A1 (fr) 2019-01-02

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