EP2738295B1 - Barre à passettes de dessin d'un métier à tricoter à chaîne - Google Patents

Barre à passettes de dessin d'un métier à tricoter à chaîne Download PDF

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Publication number
EP2738295B1
EP2738295B1 EP12007987.6A EP12007987A EP2738295B1 EP 2738295 B1 EP2738295 B1 EP 2738295B1 EP 12007987 A EP12007987 A EP 12007987A EP 2738295 B1 EP2738295 B1 EP 2738295B1
Authority
EP
European Patent Office
Prior art keywords
thread guide
guide bar
drive element
bar according
offset 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.)
Not-in-force
Application number
EP12007987.6A
Other languages
German (de)
English (en)
Other versions
EP2738295A1 (fr
Inventor
Saal Torsten
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 Textilmaschinenfabrik 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 EP12007987.6A priority Critical patent/EP2738295B1/fr
Priority to CN201310059900.9A priority patent/CN103850051B/zh
Publication of EP2738295A1 publication Critical patent/EP2738295A1/fr
Application granted granted Critical
Publication of EP2738295B1 publication Critical patent/EP2738295B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D04B27/10—Devices for supplying, feeding, or guiding threads to needles
    • D04B27/24—Thread guide bar assemblies
    • D04B27/32—Thread guide bar assemblies with independently-movable thread guides controlled by Jacquard mechanisms

Definitions

  • the invention relates to a Musterlegebarre a warp knitting machine, which is designed as a string Barre, with at least one yarn guide, which is driven by a drive element to which the yarn guide is attached with a parallel to the longitudinal extent of the drive member extending holder and the displaceable in an offset direction is, wherein the drive element comprises at least a first material and a second material, the first material is different from the second material and both materials are interconnected.
  • Such a Musterlegebarre is for example off DE 101 37 601 A1 known.
  • Several yarn guides are attached to a pulling element, which is designed as a wire or wire rope, that has a relatively small cross-section.
  • the tension element is movable in the offset direction back and forth.
  • a drive motor is arranged at one end of the tension element. Both ends of the tension element are each acted upon by a force transmitter, which is designed here as an air cylinder.
  • Such a pattern template is also referred to as a "string barre".
  • a plurality of such string ingots are arranged in a common carrier, which during a kneading operation performs a pivoting movement, which is directed substantially perpendicular to the offset direction.
  • thread guides In the manufacture of a knitted fabric thread guides must be moved to generate a pattern in the knitted fabric in the offset direction to the Thread to be incorporated into the knitted fabric in accordance with the pattern by the yarn guide.
  • the thread guide and with it the entire pattern guiding bar must be accelerated and slowed down during stitch formation. Due to the masses of the thread guide and the mass of the pattern guide bar itself and other components involved in the displacement movement arise at increasing speeds dynamic forces. These dynamic forces can cause the pattern drawing to stretch. However, such stretching is undesirable because, by stretching across the working width of the warp knitting machine, the pitch dimensions of yarn guides to yarn guides attached to the same pattern rail change.
  • the assignment of the thread guide changes to knitting needles with which the thread guides work together. With a strong stretching of the pattern guide during operation, it may come to the impact needles for striking the guide needles arranged on the thread guides, in the worst case even to a collision and thus to a destruction of the knitting tools.
  • the invention has for its object to make a Musterlegebarre suitable for high production speeds.
  • This object is achieved in a pattern laying of a warp knitting machine of the type mentioned above in that both materials extend parallel to each other over the entire length of the drive element in the offset direction.
  • the Musterlegebarre is thus designed as a hybrid construction, in which one uses different materials or materials. Each material can be selected on a special request, so the combination the two or more materials can then meet more requirements simultaneously than a conventionally known string barre.
  • the first material is a fiber-reinforced plastic whose fibers have a main direction parallel to the offset direction.
  • the fibers are embedded in a matrix material, preferably a duroplastic matrix material and preferably epoxy resin.
  • a fiber-reinforced plastic material has a high rigidity under tensile and / or compressive loading. Above all, results in a low thermal expansion of the material, which has a favorable effect on the thermal expansion of the pattern guiding bar, even if the second material should have a different thermal design. Since the two materials are interconnected, the fiber-reinforced plastic can counteract thermal expansion. In addition, results in a relatively high bending stiffness.
  • the fibers are formed as carbon fibers.
  • Carbon fibers have a comparatively high strength and thus produce a very high rigidity in connection with the plastic of the matrix, i. a great resistance to bending and elongation.
  • the second material is a metal, preferably steel or light metal.
  • the second material supports on the one hand the fibers in the matrix of the plastic material, in particular under shear stress. You can use the second material to attach the thread guide, because there is no creeping or setting in a metal. When using a metal, it is possible to adapt the dimensions to specifications relatively precisely.
  • the first material forms a rod, in particular a cylinder rod.
  • a cylinder rod made of a fiber-reinforced plastic is easy to produce.
  • the fibers can be used in this manufacturing process be aligned with their main direction in the offset direction.
  • the offset direction then corresponds to the longitudinal direction of the rod.
  • the fibers do not have to be exactly parallel. You can also include a small angle to the longitudinal direction of the rod. But since they have a main direction that corresponds to the offset direction, it is ensured that the tensile strength of the rod is very high.
  • the second material forms a jacket around the first material.
  • the second material fulfills an additional task, namely it protects the first material from mechanical and / or chemical damage.
  • this training provides a good mounting option for the thread guide. A sheathing by the second material results in an additional support function of the fibers against buckling, in particular during a shear loading of the pattern guide bar.
  • the second material is formed as a tube.
  • a pipe is a commercial product, so that the manufacturing cost of the driving member can be made small.
  • first material and the second material in the offset direction in sections.
  • first material and the second material are interconnected in the offset direction continuously. This connection can be made insoluble. This ensures at every point in the offset direction that the first material and the second material can not separate from each other.
  • the first material and the second material are glued together, thermally bonded or pressed.
  • a continuous or at least partially formed connection can be realized, which is capable of between the first material and the second Material to absorb any shearing forces.
  • bonding for example, one can use an adhesive between the first material and the second material.
  • melt the first material by supplying heat and then to connect it to the second material.
  • a tube for the second material can be ensured by pressing the tube together that a connection between the first material and the second material is non-positively.
  • the drive element is guided in at least one outer guide, and the second material is arranged in the region of the outer guide.
  • the second material also fulfills a sliding function.
  • the second material may form a lubricious coating.
  • a friction between the drive element and the carrier is reduced.
  • a pattern laying bar 1 of a warp knitting machine has at least one thread guide 2, which carries a laying needle 3. Through the guide needle 3, a warp thread is guided in a conventional manner, which is to be integrated during a knitting process in a knit fabric.
  • the yarn guide 2 is fixed in the present embodiment to a drive element 4, for example, it is glued to the drive element 4.
  • the yarn guide 2 is movable by means of the drive element 4 in an offset direction back and forth.
  • the offset direction corresponds to the longitudinal extension of the drive element. 4
  • the yarn guide 2 has a holder 5, which extends parallel to the longitudinal extent of the drive element 4.
  • the holder 5 is rigidly connected to the yarn guide 2, ie an angular alignment between the yarn guide 2 and the holder 5 is maintained in operation, for example at an angle of 90 °, as in Fig. 1 shown.
  • the holder 5 has a groove 6, in which the drive element 4 is inserted.
  • the groove 6 has a contour which is adapted to the outer contour of the drive element 4.
  • the drive element has two materials that in Fig. 3 represented by different hatching. Both materials differ from each other. Both Materials extend parallel to one another in the offset direction, ie in the longitudinal direction of the drive element 4, and are connected to one another.
  • first material 7 which is formed from a fiber-reinforced plastic.
  • carbon fibers are preferably used here in order to ensure a relatively high rigidity and strength.
  • the carbon fibers are embedded in a matrix of a plastic material.
  • the plastic material is preferably a thermosetting material, and more preferably epoxy resin.
  • the first material 7 is in the form of a rod.
  • the rod has a circular cross-section. Other cross-sectional shapes are possible.
  • Such a rod can be manufactured in different ways. An easy way to manufacture is an extrusion or extrusion process.
  • the drive element 4 a second material 8, which is formed in the present case of steel.
  • the second material is realized here by a thin-walled profile tube.
  • the first material 7 and the second material 8 are permanently connected to each other over their entire length.
  • the first material 7 and the second material 8 can be glued together, for example.
  • An alternative is a thermal connection.
  • the tube of the second material 8 forms a jacket around the first material 7. This jacket protects the first material 7 from mechanical and / or chemical damage. Also, the second material 8 provides a good mounting option for the yarn guide 2, because the risk of creeping or setting of a plastic material is relatively small.
  • the sheath fulfills an additional support function, so that the fibers of the first material 7 are protected against buckling, in particular during a thrust load of the drive element 4.
  • the drive element 4 directly carries the yarn guide 2 and thus forms the pattern guide itself. But you can also use the drive element 4 as a transmission element between a drive and the actual pattern laying bar.
  • the Musterlegebarre can be designed as a tension element or as a push-pull element.
  • the first material 7 and the second material 8 preferably extend over the entire length of the drive element 4 and are interconnected over the entire length.
  • the connection does not necessarily have to be consistent. It is possible to restrict the connection to predetermined sections, as long as certain functions are fulfilled, which are explained in more detail below.
  • the cross-sectional area of the second material 8 is small relative to the cross-sectional area of the first material 7.
  • the mass of the drive element 4 is essentially determined by the specific gravity of the first material 7, which is significantly smaller than the specific gravity of the second material 8.
  • Das Drive element 4 can thus be formed overall with a relatively low mass.
  • the first material 7 practically does not change its length during operation. Such a change in length is caused neither by a change in temperature, nor by forces occurring.
  • the first material 7 is therefore insensitive to thermal expansion and also insensitive to tensile elongation.
  • a thermal expansion of the second material 8 is not critical, because such thermal expansion is prevented by the first material 7.
  • the connection between the first material 7 and the second material 8 does not have to be continuous over the entire length of the drive element 4. It is sufficient if the connections are designed so that no heat or tensile expansions of the second material 8 occur in unconnected sections.
  • the second material 8 may also be formed as a sliding coating. As in the aforementioned DE 101 37 601 A1 described, the drive element is often performed in an external guide. The second material 8 is arranged in such sections in which the drive element is actually guided in the outer guide, so that the friction can be kept small here. If the second material 8 is formed as a jacket, then the torsional stiffness of the drive element is thereby improved, which is particularly advantageous if the drive element 4 is provided as a connecting element between a drive and the guide bar.
  • a composite material is used as the first material 7, whose modulus increases with increasing tensile load, which thus shows a progressive spring behavior.
  • a readjustment of the warp knitting machine which was previously necessary in many cases during operation due to thermal influences, can be omitted.
  • a pre-stretching of the drive element when attaching the thread guide can also be omitted.
  • the straightening of the yarn guides is usually superfluous, since the thermal expansion of a hybrid pattern guide is extremely low. A machine-related heating has virtually no influence on the position of the yarn guide. 4

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

Claims (11)

  1. Barre a passettes à motifs (1) d'un métier à tricoter à chaîne, qui se présente sous la forme d'une barre chaîne, avec au moins un guide-fil (2), qui peut être entraîné par un élément d'entraînement (4), auquel le guide-fil (2) est fixé avec un support (5) s'étendant parallèlement à l'extension longitudinale de l'élément d'entraînement (4) et qui peut être déplacé dans une direction de décalage, dans laquelle l'élément d'entraînement (4) présente au moins un premier matériau (7) et un second matériau (8), le premier matériau (7) se distingue du second matériau (8) et les deux matériaux (7, 8) sont liés l'un à l'autre, caractérisée en ce que les deux matériaux (7, 8) s'étendent parallèlement l'un à l'autre sur toute la longueur de l'élément d'entraînement (4) dans la direction de décalage.
  2. Barre à passettes à motifs selon la revendication 1, caractérisée en ce que le premier matériau (7) est un matériau synthétique renforcé par des fibres, dont les fibres présentent une direction principale parallèlement à la direction de décalage.
  3. Barre à passettes à motifs selon la revendication 2, caractérisée en ce que les fibres se présentent sous la forme de fibres de carbone.
  4. Barre à passettes à motifs selon l'une quelconque des revendications 1 à 3, caractérisée en ce que le second matériau (8) est un métal, de préférence de l'acier ou un métal léger.
  5. Barre à passettes à motifs selon l'une quelconque des revendications 1 à 4, caractérisée en ce que le premier matériau (7) forme une tige, en particulier une tige cylindrique.
  6. Barre à passettes à motifs selon l'une quelconque des revendications 1 à 5, caractérisée en ce que le second matériau (8) forme une chemise autour du premier matériau.
  7. Barre à passettes à motifs selon la revendication 6, caractérisée en ce que le second matériau (8) se présente sous la forme d'un tube.
  8. Barre à passettes à motifs selon l'une quelconque des revendications 1 à 7, caractérisée en ce que le premier matériau (7) et le second matériau (8) sont liés l'un à l'autre dans la direction de décalage en continu ou par zones.
  9. Barre à passettes à motifs selon l'une quelconque des revendications 1 à 8, caractérisée en ce que le premier matériau (7) et le second matériau (8) sont collés, liés à chaud ou scellés l'un à l'autre.
  10. Barre à passettes à motifs selon la revendication 9, caractérisée en ce que l'élément d'entraînement (4) est guidé dans au moins un guidage externe et le second matériau (8) est aménagé dans la zone du guidage externe.
  11. Barre à passettes à motifs selon l'une quelconque des revendications 1 à 10, caractérisée en ce que le second matériau (8) forme un revêtement lisse.
EP12007987.6A 2012-11-28 2012-11-28 Barre à passettes de dessin d'un métier à tricoter à chaîne Not-in-force EP2738295B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP12007987.6A EP2738295B1 (fr) 2012-11-28 2012-11-28 Barre à passettes de dessin d'un métier à tricoter à chaîne
CN201310059900.9A CN103850051B (zh) 2012-11-28 2013-02-26 经编机的提花梳栉

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12007987.6A EP2738295B1 (fr) 2012-11-28 2012-11-28 Barre à passettes de dessin d'un métier à tricoter à chaîne

Publications (2)

Publication Number Publication Date
EP2738295A1 EP2738295A1 (fr) 2014-06-04
EP2738295B1 true EP2738295B1 (fr) 2016-01-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP12007987.6A Not-in-force EP2738295B1 (fr) 2012-11-28 2012-11-28 Barre à passettes de dessin d'un métier à tricoter à chaîne

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EP (1) EP2738295B1 (fr)
CN (1) CN103850051B (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US303670A (en) * 1884-08-19 Sheet-metal vessel
DE10137601B4 (de) 2001-08-01 2006-09-07 Karl Mayer Textilmaschinenfabrik Gmbh Kettenwirkmaschine mit mindestens einer Musterlegebarre
CN101328643A (zh) * 2008-07-24 2008-12-24 王占洪 常温下运行的经编机针床
CN101457443B (zh) * 2008-09-27 2011-10-05 常州市润源经编机械有限公司 经编机花梳导纱器
CN101538772B (zh) * 2009-04-23 2013-06-05 郑依福 一种在常温下运行的多梳栉经编机
DE102009022191B3 (de) * 2009-05-20 2011-06-16 Karl Mayer Textilmaschinenfabrik Gmbh Fadenführeranordnung einer Kettenwirkmaschine
DE102010045049B4 (de) * 2010-09-10 2012-10-04 Karl Mayer Textilmaschinenfabrik Gmbh Verfahren zum Herstellen einer Wirkwerkzeugbarre
CN202152402U (zh) * 2011-06-27 2012-02-29 常州市润源经编机械有限公司 一种经编机花梳针安装结构

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Publication number Publication date
CN103850051A (zh) 2014-06-11
CN103850051B (zh) 2016-06-22
EP2738295A1 (fr) 2014-06-04

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