EP1756344B1 - Metier a tricoter chaine - Google Patents

Metier a tricoter chaine Download PDF

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Publication number
EP1756344B1
EP1756344B1 EP04739851A EP04739851A EP1756344B1 EP 1756344 B1 EP1756344 B1 EP 1756344B1 EP 04739851 A EP04739851 A EP 04739851A EP 04739851 A EP04739851 A EP 04739851A EP 1756344 B1 EP1756344 B1 EP 1756344B1
Authority
EP
European Patent Office
Prior art keywords
warp knitting
arms
knitting machine
machine according
fastened
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
EP04739851A
Other languages
German (de)
English (en)
Other versions
EP1756344A1 (fr
Inventor
Hans-Jürgen Höhne
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
Publication of EP1756344A1 publication Critical patent/EP1756344A1/fr
Application granted granted Critical
Publication of EP1756344B1 publication Critical patent/EP1756344B1/fr
Anticipated expiration legal-status Critical
Not-in-force legal-status Critical Current

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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

Definitions

  • the invention relates to a warp knitting machine with at least one guide bar, which is fastened by means of a slide bearing designed as a bearing and is displaceable relative to the holder in the machine direction, the bearing, wherein the slide bearing has a support assembly which is fixed to the holder, and a support member which is fixed to the guide bar.
  • Such a warp knitting machine is made US 2,533,061 A known.
  • the guide bar is attached to a frame having a parallel to the machine direction slide bar.
  • the slide bar is guided by a holder, so that the guide bar can be moved relative to the holder.
  • the slide bar also serves as a pivot axis to pivot the guide bar in a position in which threads can be threaded.
  • the guide bar In the working position, the guide bar is held in that the frame has a wide rail, which in a U-shaped recess is guided, which is attached to the bracket.
  • Another warp knitting machine in which the bearing is designed as a ball guide is, for example DE 38 28 469 A1 known.
  • a guide bar carries guide needles.
  • a guide needle guides a thread around one or more knitting needles during a knitting process.
  • the guide needle in the machine direction is movable back and forth.
  • it must also be able to be moved transversely to the machine direction to be guided through needle lanes between adjacent knitting needles. While the last movement is usually caused by a pivotal movement of a holder, the movement of the guide bar in the machine direction is effected by a drive.
  • This drive can be configured directly as a linear motor.
  • the guide bar is driven by a plunger, which in turn is actuated by a cam.
  • the invention has for its object to be able to operate a warp knitting machine with high working speed and play-free connection between the bracket and guide bar.
  • This object is achieved in a warp knitting machine of the type mentioned above in that the support assembly has two arms which bear from opposite sides with a bias on the support member.
  • a plain bearing is in a warp knitting machine rather able to absorb high accelerations than the previously used ball bearings. It can be formed with otherwise comparable properties with a lower weight, which in turn accommodates the acceleration of the guide bar. Accordingly, one can operate the warp knitting machine at a higher operating speed.
  • the support element is thus held between the two arms of the carrier assembly. This makes it possible to limit the contact between the two surface arrangements to relatively small areas.
  • the support element must therefore not be completely surrounded by the support assembly. It can surface areas remain on the support element, which are not touched by the arms. Again, this is a measure to reduce the friction and thus to change the sliding behavior.
  • the slide bearing has a first surface assembly secured to the support and a second surface assembly secured to the guide bar and in sliding contact with the first surface assembly, wherein at least one of the surface assemblies is formed of plastic.
  • a suitable plastic By selecting a suitable plastic, the sliding behavior of the two surface arrangements can be determined together. If one chooses surface arrangements, which cooperate with low friction due to the plastic, then one can effect a low-loss operation. The lower the frictional forces acting between the two surface arrangements, the lower the resistance which precludes the acceleration of the guide bar. Accordingly, the available driving forces can be used to a greater extent to accelerate the guide bar.
  • Suitable plastics include PA, POM, PMMA, PEEK, but also plastics with a ceramic matrix.
  • the plastic is preferably fiber-reinforced, in particular by carbon fibers.
  • a carbon fiber reinforced plastic (CFRP) is lightweight and stable. When using CFRP, one can produce both plastic surface arrangements. The fibers cause the necessary mechanical reinforcement. When using carbon fibers, the friction behavior of the two surface assemblies together is not deteriorated.
  • At least one surface arrangement is provided with polytetrafluoroethylene.
  • Polytetrafluoroethylene PTFE
  • PTFE polytetrafluoroethylene
  • One Thin application of polytetrafluoroethylene is usually sufficient to improve lubricity and wear resistance. PTFE usually does not wear off, so that a good sliding behavior is achieved in the longer term.
  • the arms are connected to one another only on one side of the support element. This makes it possible to let the two arms act with a low bias on the support member. This increases the accuracy of the guide, ie a game in plain bearings is reliably avoided with simple measures. Since a connection between the two arms is provided only on one side, the arms at the other end can spring apart or together. The preload can be kept quite small here.
  • the arms have in the region of the support element a groove in which the support element is guided.
  • the support element is guided in this way not only in the machine direction between the arms, but also supported in the direction of gravity, without exerting excessively large clamping forces on the support member. This further improves the sliding behavior.
  • the arms are formed as plates which have a bulge in the region of the groove. This facilitates the production of the arms. You only need a plate that is transformed, for example in a mold. As a result of this deformation, the groove is produced automatically, without the need for further processing.
  • the arms are formed of plastic, wherein the arms are attached to an intermediate piece. If you use plastic for the arms, especially CFK, then you can produce them in heatable molds. These dies allow the required high accuracy in the manufacture of the arms. You just have to insert the plastic with the fibers in the molds, heat the molds and then let the plastic cure. Post-processing is not required. Since the arms are attached to the intermediate piece, the intermediate piece can take over the connection to the holder.
  • the adapter must not be made of plastic, although this is of course also possible. It is preferably formed from a light metal such as aluminum or magnesium.
  • the intermediate piece for each arm has a recess into which the arm is inserted. This is an easy way to secure the arm in the adapter against movement in the machine direction. At least in the machine direction is achieved so that a quasi-positive connection between arm and spacer.
  • the arm outside the recess in each case a broadening, which bears against the intermediate piece.
  • the arm is secured against the intermediate piece in a direction perpendicular to the machine direction, i. the arm is positively connected by the geometric configuration in two directions with the intermediate piece.
  • a third direction perpendicular to the first and second directions can then act, for example, screws or similar fasteners that connect the arm with the spacer.
  • a broadening is formed by the bulge. So you need no additional broadening, but uses the bulge, which otherwise forms the groove, at the same time to arrange the intermediate piece and the arm relative to each other positionally correct. As a result, the groove is lengthened in the machine direction and the support member over a longer distance at the same time out.
  • each arm has a mounting arrangement that is mirror-symmetrical to its longitudinal axis. This makes it possible to use arms of the same type on both sides of the intermediate piece, without that one must make a change in the mounting arrangement.
  • the support member is formed as an elongated plate which is fixed to the guide bar. Due to the grooves no complicated geometries are required.
  • An elongated plate can be easily manufactured, for example, also in a mold. This plate can also be made of plastic, in particular CFRP. Their thickness corresponds to the clear width of the grooves in the arms.
  • Fig. 1 shows schematically a warp knitting machine 1 in the neckline with a guide bar 2, which can also be referred to as a laying rail, to which a plurality of guide needles 3 is attached.
  • the guide bar 2 is driven back and forth by means of a cam 4 and a return spring 5 in the machine direction 6, ie in the direction in which the guide needles 3 are arranged one behind the other.
  • a cam 4 and a return spring 5 instead of the drive over a cam 4 and a return spring 5, of course, other drive options are conceivable, for example, a linear motor.
  • the guide bar 2 is attached to a plurality of holders 7.
  • the brackets 7 are arranged rotatably on a pivot shaft 8.
  • the guide needles 3 can be performed in such a movement by Nadelgassen of knitting needles, not shown.
  • the pivot shaft 8 is mounted in machine-fixed bearings 9 and driven by a rotary drive 10.
  • the guide bar 2 can be moved in the machine direction 6 relative to the brackets 7, the guide bar 2 is attached via a plurality of plain bearings 11 to the brackets 7.
  • These sliding bearings 11 will now be explained in more detail in connection with FIGS. 2 and 3.
  • the guide bar 2 a support member 12 which is connected to the guide bar 2 via a screw 13.
  • the support member 12 is on both sides of the guide bar 2, ie transversely to the machine direction 6, which is based on the representation of FIG. 2 perpendicular to the plane.
  • the support element 12 is formed of fiber-reinforced plastic, for example carbon fiber reinforced plastic or CFRP.
  • the support element can be produced, for example, in a mold into which a plastic compound provided with carbon fibers is filled. The mold is heated. The plastic is then going through the mold brought into shape. Upon cooling, the plastic then hardens and forms the support member 12 in the form of the elongated plate.
  • a plastic for example, can use a prepreg, which is under the name "SIGRATEX PREPREG CE 1211-255-39" offered by the SGL Carbon AG, Wiesbaden, Germany.
  • the support member 12 is held between two arms 14, 15 which are fixed to an intermediate piece 16.
  • the portions of the arms 14, 15 in contact with the support element 12 form a first surface arrangement.
  • the areas of the support element 12 which are in contact with the first surface arrangement form a second surface arrangement.
  • Each arm 14, 15 is formed as a plate, which has a bulge 17 following the intermediate piece below.
  • the bulge 17 forms a groove 18 in which the support element 12 is guided.
  • the arms 14, 15 are not connected to each other, so that they can press against the support member 12 with a small bias.
  • the lower part of the arms leads the guide bar. As a result, the guide bar is supported laterally.
  • the arms 14, 15 are formed by fiber-reinforced plastic, in particular CFK. They can also be made in heatable molds. In the production, the bulges 17 with the groove 18 and also openings 19, can be guided by the bolts 20 to attach the arms 14, 15 on the intermediate piece 16.
  • the openings 19 are symmetrical to a vertically extending plane of symmetry (With reference to FIG. 3) arranged so that you can form the arms 14, 15 identical.
  • the intermediate piece 16 has in the machine direction 6 on both sides of the arms 14 each have a projection 21, 22. Between the projections 21, 22 so in each case a recess is formed, in which the arms 14, 15 are inserted. The arms 14, 15 are thus held positively in the machine direction 6 on the intermediate piece 16.
  • the arms 14, 15 widen above and below the intermediate piece 16.
  • the lower widening is formed by the bulge 17.
  • the arms 14, 15 on a broadening 23.
  • the arms 14, 15 are held on the intermediate piece 16 in the vertical direction practically positively.
  • the intermediate piece 16 still has holes 24, 25 which extend in the machine direction 6. Through these holes 24, 25 bolts not shown in detail can be performed to attach the intermediate piece 16 and thus the slide bearing 11 to the brackets 7.
  • the arms 14, 15 and the support member 12 may, as mentioned above, be formed by fiber-reinforced plastic, in particular carbon fiber reinforced plastic CFK. If both the arms 14, 15 and the support member 12 are formed of plastic, and the two surface arrays are made of plastic.
  • the preparation is in compression molding. In the preparation of the molds can be provided with PTFE, for example, spray. When removing the arms 14, 15 and the support member 12 from these dies then remains a small amount of PTFE on the surface of the arms 14, 15 and the support member 12 hang, which further improves the sliding properties of the support member 12 relative to the arms 14, 15.
  • the arms 14, 15 and the support member 12 can be produced with a relatively high accuracy. Post-processing is virtually unnecessary. The remaining inaccuracies in the production can be taken into account, because the arms 14, 15 are attached only one side of the intermediate piece 16. You can therefore embrace the support member 12 with a small clamping force. This clamping force must only be so large that a game is avoided. But it is still small enough not to increase the friction between the support member 12 and the two arms 14, 15 appreciably.
  • the groove 18 supports the support element 12 against gravity. It is shown that the holder 12 are connected to the guide bar 2 and the arms 14, 15 with the holder 7. Of course, a reverse arrangement is possible in which the retaining element 12 with the holder 7 and the arms 14, 15 are connected to the guide bar 2.

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

Claims (13)

  1. Machine à tricoter en chaîne (1) comprenant au moins une barre de guidage (2), qui est fixée à une base (7) au moyen d'un palier réalisé sous la forme d'un palier glissant (11) et qui peut être déplacée contre la base (7) dans le sens machine (6), le palier glissant (11) présentant un ensemble support, qui est fixé à la base (7), et un élément porteur (12) qui est fixé à la barre de guidage (2), caractérisée en ce que l'ensemble support présente deux bras (14, 15) qui sont en appui sur l'élément porteur (12) depuis des côtés opposés avec une certaine précontrainte.
  2. Machine à tricoter en chaîne selon la revendication 1, caractérisée en ce que le palier glissant (11) présente un premier agencement de surface qui est fixé sur la base (7), et un deuxième agencement de surface qui est fixé à la barre de guidage (2) et se trouve en contact glissant avec le premier agencement de surface, au moins un des agencements de surface étant constitué de plastique.
  3. Machine à tricoter en chaîne selon la revendication 2, caractérisée en ce que le plastique est renforcé par des fibres, en particulier par des fibres de carbone.
  4. Machine à tricoter en chaîne selon la revendication 2 ou3, caractérisée en ce qu'au moins un agencement de surface est pourvu de polytétrafluoroéthylène.
  5. Machine à tricoter en chaîne selon l'une quelconque des revendications 1 à 4, caractérisée en ce que les bras (14, 15) ne sont reliés l'un à l'autre que d'un côté de l'élément porteur (12).
  6. Machine à tricoter en chaîne selon l'une quelconque des revendications 1 à 5, caractérisée en ce que les bras (14, 15) présentent une rainure (18) dans la zone de l'élément porteur (12), dans laquelle l'élément porteur (12) est guidé.
  7. Machine à tricoter en chaîne selon la revendication 6, caractérisée en ce que les bras (14, 15) sont réalisés sous la forme de plaques qui, dans la zone de la rainure (18), présentent un bombement vers l'extérieur (17).
  8. Machine à tricoter en chaîne selon l'une quelconque des revendications 1 à 7, caractérisée en ce que les bras (14, 15) sont constitués de plastique, les bras étant fixés à une entretoise (16).
  9. Machine à tricoter en chaîne selon la revendication 8, caractérisée en ce que l'entretoise (16) présente un évidement pour chaque bras (14, 15), dans lequel le bras (14, 15) est introduit.
  10. Machine à tricoter en chaîne selon la revendication 9, caractérisée en ce que, outre l'évidement, le bras (14, 15) présente respectivement un élargissement (23) qui est adjacent à l'entretoise (16).
  11. Machine à tricoter en chaîne selon la revendication 10 en référence à la revendication 7, caractérisée en ce qu'un élargissement est formé par le bombement extérieur (17).
  12. Machine à tricoter en chaîne selon l'une quelconque des revendications 1 à 11, caractérisée en ce que chaque bras (14, 15) présente un système de fixation (19), qui est formé de manière symétrique par rapport à son axe longitudinal.
  13. Machine à tricoter en chaîne selon l'une quelconque des revendications 1 à 12, caractérisée en ce que l'élément porteur (12) est réalisé sous la forme d'une plaque allongée, qui est fixée à la barre de guidage (2).
EP04739851A 2004-06-12 2004-06-12 Metier a tricoter chaine Not-in-force EP1756344B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2004/006366 WO2005121425A1 (fr) 2004-06-12 2004-06-12 Metier a tricoter chaine

Publications (2)

Publication Number Publication Date
EP1756344A1 EP1756344A1 (fr) 2007-02-28
EP1756344B1 true EP1756344B1 (fr) 2008-01-09

Family

ID=34957870

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04739851A Not-in-force EP1756344B1 (fr) 2004-06-12 2004-06-12 Metier a tricoter chaine

Country Status (6)

Country Link
EP (1) EP1756344B1 (fr)
JP (1) JP2008502818A (fr)
CN (1) CN100572637C (fr)
DE (1) DE502004005932D1 (fr)
ES (1) ES2298767T3 (fr)
WO (1) WO2005121425A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106381605B (zh) * 2016-10-13 2017-11-28 江苏明朗星新能源科技发展有限公司 一种压电贾卡梳安装组件

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2533061A (en) * 1948-04-13 1950-12-05 Whitin Machine Works Warp knitting machine
DE3828469A1 (de) * 1988-08-22 1990-03-08 Mayer Textilmaschf Legebarrenlagerung fuer kettenwirkmaschinen
DE10041192C2 (de) * 2000-08-23 2002-09-19 Mayer Textilmaschf Musterlegebarrenanordnung für Kettenwirkmaschinen

Also Published As

Publication number Publication date
JP2008502818A (ja) 2008-01-31
DE502004005932D1 (de) 2008-02-21
ES2298767T3 (es) 2008-05-16
CN1969072A (zh) 2007-05-23
EP1756344A1 (fr) 2007-02-28
WO2005121425A1 (fr) 2005-12-22
CN100572637C (zh) 2009-12-23

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