EP1756344A1 - Metier a tricoter chaine - Google Patents

Metier a tricoter chaine

Info

Publication number
EP1756344A1
EP1756344A1 EP04739851A EP04739851A EP1756344A1 EP 1756344 A1 EP1756344 A1 EP 1756344A1 EP 04739851 A EP04739851 A EP 04739851A EP 04739851 A EP04739851 A EP 04739851A EP 1756344 A1 EP1756344 A1 EP 1756344A1
Authority
EP
European Patent Office
Prior art keywords
warp knitting
knitting machine
arms
machine according
support element
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.)
Granted
Application number
EP04739851A
Other languages
German (de)
English (en)
Other versions
EP1756344B1 (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
Expired - Lifetime legal-status Critical Current

Links

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 bar, which is fastened to a holder with the aid of a bearing and can be displaced relative to the holder in the machine direction.
  • Such a warp knitting machine is known for example from DE 38 28 469 AI.
  • a laying bar carries laying needles.
  • a laying needle guides a thread around one or more knitting needles during a knitting process. For this it is necessary that the laying needle can be moved back and forth in the machine direction. In addition, it must also be able to be moved transversely to the machine direction in order to be guided through adjacent rows of knitting needles. While the last movement is usually effected by a pivoting movement of a holder, the movement the bar in the machine direction by a drive.
  • This drive can be designed directly as a linear motor.
  • the 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 at high working speed.
  • This object is achieved in a warp knitting machine of the type mentioned in that the bearing is designed as a plain bearing.
  • a plain bearing in a warp knitting machine is more capable of absorbing high accelerations than the ball guides previously used. With otherwise comparable properties, it can be designed with a lower weight, which in turn accommodates the acceleration of the laying bar. Accordingly, the warp knitting machine can be operated at a higher working speed.
  • the slide bearing preferably has a first surface arrangement which is fastened to the holder and a second surface arrangement which is fastened to the laying bar and is in sliding contact with the first surface arrangement, at least one of the surface arrangements being formed from plastic.
  • the plastic is preferably fiber-reinforced, in particular by carbon fibers.
  • a carbon fiber reinforced plastic (CFRP) is light and stable. When using CFRP, both surface arrangements can be made of plastic. The fibers provide the necessary mechanical reinforcement. When carbon fibers are used, the friction behavior of the two surface arrangements against one another is not impaired.
  • At least one surface arrangement is preferably provided with polytetrafluoroethylene.
  • Polytetrafluoroethylene PTFE is a plastic that further reduces the friction between sliding parts. On thin application of polytetrafluoroethylene is usually sufficient to improve the glide and wear resistance. PTFE generally does not wear out, so that good sliding behavior is also achieved in the long term.
  • the slide bearing preferably has a support arrangement which is fastened to the holder and a support element which is fastened to the laying bar, the support arrangement having two arms which bear against the support element from opposite sides.
  • the support element is thus held between the two arms of the support arrangement. This makes it possible to limit the contact between the two surface arrangements to relatively small areas.
  • the support element does not have to be completely surrounded by the support arrangement. Flat areas can remain on the support element that are not touched by the arms. This is also a measure to reduce the friction and thus to change the sliding behavior.
  • the arms are preferably connected to one another only on one side of the support element. This makes it possible to allow the two arms to act on the support element with a slight preload. This increases the accuracy of the guidance, ie play in the plain bearing is reliably avoided with simple measures. Since a connection between the two arms is only provided on one side, the arms can spring apart or spring together at the other end. The spring preload can be kept quite small.
  • the arms preferably have a groove in the region of the support element, in which the support element is guided. In this way, the support element is not only guided between the arms in the machine direction, but is also supported in the direction of gravity, without having to exert excessive clamping forces on the support element. This further improves the sliding behavior.
  • the arms are preferably designed as plates which have a bulge in the region of the groove. This facilitates the manufacture of the arms. All you need is a plate that is formed, for example in a press mold. This reshaping results in the groove automatically, without the need for reworking.
  • the arms are preferably made of plastic, the arms being fastened to an intermediate piece. If plastic is used for the arms, especially CFRP, then it can be manufactured in heatable molds. These molds allow the high accuracy required in the manufacture of the arms. You just have to insert the plastic with the fibers into the molds, heat the molds and then let the plastic harden. Post-processing is not necessary. Since the arms are attached to the adapter, the adapter can take over the connection to the holder.
  • the intermediate piece no longer has to be made of plastic, although this is of course also possible. It is preferably made of a light metal, such as aluminum or magnesium.
  • the intermediate piece preferably has a recess into which the arm is inserted. This is an easy way to secure the arm in the intermediate piece against movement in the machine direction. At least in the machine direction, this creates a quasi-positive connection between the arm and the intermediate piece.
  • the arm preferably has a widening outside the recess in each case, which abuts the intermediate piece. This secures the arm to the intermediate piece in a direction perpendicular to the machine direction, i.e. the arm is positively connected to the intermediate piece in two directions due to the geometric design. In a third direction perpendicular to the first and second direction, screws or similar fastening elements can then act, for example, which connect the arm to the intermediate piece.
  • a widening is formed by the bulge. So you do not need any additional widening, but at the same time uses the bulge, which also forms the groove, to arrange the intermediate piece and the arm in the correct position relative to each other. As a result, the groove is extended in the machine direction and the support element is laterally guided over a longer distance.
  • Each arm preferably has a fastening arrangement which is mirror-symmetrical to its longitudinal axis. This makes it possible to use arms of the same type on both sides of the adapter without -1 -
  • the supporting element is preferably designed as an elongated plate which is fastened to the laying bar. No complicated geometries are required due to the grooves.
  • An elongated plate can be easily manufactured, for example also in a mold. This plate can also be made of plastic, especially CFRP. Their thickness corresponds to the clear width of the grooves in the arms.
  • Fig. 1 is a schematic representation of a chain ⁇ knitting machine with a guide bar in the cutout
  • Fig. 2 is a plain bearing in section II-II of Fig. 3 and
  • Fig. 3 is a front view of the slide bearing.
  • Fig. 1 shows schematically a warp knitting machine 1 in a detail with a laying bar 2, which can also be called a laying rail, on which a plurality of laying needles 3 are attached.
  • the laying bar 2 is driven with the aid of a cam 4 and a return spring 5 m machine direction 6 back and forth, that is, in the direction in which the laying needles 3 are arranged one behind the other.
  • a cam 4 and a return spring 5 m machine direction 6 back and forth, that is, in the direction in which the laying needles 3 are arranged one behind the other.
  • a cam disk 4 and a return spring 5 are of course also conceivable other drive options, for example a linear motor.
  • the bar 2 is attached to several brackets 7.
  • the brackets 7 are rotatably arranged on a pivot shaft 8.
  • the pivot shaft 8 is rotated, the bar 2 is pivoted over the holder 7.
  • the laying needles 3 can be guided in such a movement through needle lanes by knitting needles which are not shown in more detail.
  • the pivot shaft 8 is mounted in machine-fixed bearings 9 and driven by a rotary drive 10.
  • the bar 2 has a support element 12 which is connected to the bar 2 via a screw 13.
  • the support element 12 protrudes on both sides above the bar 2, that is to say transversely to the direction of the mesh 6, which is perpendicular to the plane of the drawing in relation to the illustration in FIG.
  • the support element 12 is formed from fiber-reinforced plastic, for example carbon fiber reinforced plastic or CFRP.
  • the support element can be manufactured, for example, in a press mold into which a plastic mass provided with carbon fibers is filled. The mold is heated. The plastic is then through brought the mold into its shape. When cooling, the plastic then hardens and forms the support element 12 in the form of the elongated plate.
  • a plastic can be used as a prepreg, which is offered under the name "SIGRATEX PREPREG CE 1211-255-39" by SGL Carbon AG, Wiesbaden, Germany.
  • the support element 12 is held between two arms 14, 15 which are attached to an intermediate piece 16.
  • the areas of the arms 14, 15 which are 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 designed as a plate which has a bulge 17 at the bottom following the intermediate piece.
  • the bulge 17 forms a groove 18 in which the support element 12 is guided.
  • the arms 14, 15 are not connected to one another below the support element 12, so that they can press against the support element 12 with a small pretension. The lower part of the arms guides the bar. This will support the bar laterally.
  • the arms 14, 15 are also formed by fiber-reinforced plastic, in particular CFRP. They can also be manufactured in heatable molds. During the production, the bulges 17 with the groove 18 and also openings 19 result, through which screw bolts 20 can be guided, in order to fasten the arms 14, 15 to the intermediate piece 16.
  • the openings 19 are symmetrical to a vertically extending symmetry t ⁇ eebene (based on FIG. 3) arranged so that the arms 14, 15 can be formed identically.
  • the intermediate piece 16 has a machine direction 6 on each side of the arms 14, a projection 21, 22. Between the projections 21, 22, a recess is formed in each case, which the arms 14, 15 are inserted. The arms 14, 15 are thus held in a form-fitting manner on the intermediate piece 16 in the machine direction 6.
  • 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 have a widening 23.
  • the arms 14, 15 on the intermediate piece 16 are practically positively held in the vertical direction.
  • the intermediate piece 16 also has bores 24, 25 which run in the machine direction 6. Through these bores 24, 25, bolts (not shown in more detail) can be guided in order to fasten the intermediate piece 16 and thus the slide bearing 11 to the brackets 7.
  • the arms 14, 15 and the support element 12 can, as mentioned above, be formed by fiber-reinforced plastic, in particular carbon fiber reinforced plastic CFRP. If both the arms 14, 15 and the support element 12 are made of plastic, the two surface arrangements are also made of plastic. It is manufactured in m molds. During production, the molds can be provided with PTFE, for example e-spraying. When the arms 14, 15 and the support element 12 are removed from these molds, one remains - left
  • the arms 14, 15 and the support element 12 can be produced with a comparatively high accuracy by the press molds. Post-processing is practically not necessary. The remaining inaccuracies in the manufacture can be taken for sale because the arms 14, 15 are only attached to the intermediate piece 16 on one side. You can therefore grip the support element 12 with a small clamping force. This clamping force only has to be so great that play is avoided. However, it is still small enough that the friction between the support element 12 and the two arms 14, 15 is not significantly increased.
  • the groove 18 supports the support element 12 against gravity. It is shown that the bracket 12 with the bar 2 and the arms 14, 15 are connected to the bracket 7. Of course, a reversed arrangement is also possible, in which the holding ⁇ element 12 with the holder 7 and the arms 14, 15 are connected to the guide bar. 2

Landscapes

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

Abstract

L'invention concerne un métier à tricoter chaîne (1) pourvu d'au moins une barre à passettes (2), fixée à un support (7) au moyen d'un palier et pouvant être déplacée par rapport au support (7) dans le sens machine (6). L'objectif de cette invention est de pouvoir faire fonctionner ce métier à tricoter chaîne à une grande vitesse de travail. A cet effet, le palier se présente sous la forme d'un palier lisse (11).
EP04739851A 2004-06-12 2004-06-12 Metier a tricoter chaine Expired - Lifetime 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 true EP1756344A1 (fr) 2007-02-28
EP1756344B1 EP1756344B1 (fr) 2008-01-09

Family

ID=34957870

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04739851A Expired - Lifetime 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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005121425A1 *

Also Published As

Publication number Publication date
ES2298767T3 (es) 2008-05-16
WO2005121425A1 (fr) 2005-12-22
JP2008502818A (ja) 2008-01-31
CN100572637C (zh) 2009-12-23
CN1969072A (zh) 2007-05-23
DE502004005932D1 (de) 2008-02-21
EP1756344B1 (fr) 2008-01-09

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