EP3757267B1 - Wirkwerkzeugbarre für eine kettenwirkmaschine - Google Patents

Wirkwerkzeugbarre für eine kettenwirkmaschine Download PDF

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Publication number
EP3757267B1
EP3757267B1 EP20206076.0A EP20206076A EP3757267B1 EP 3757267 B1 EP3757267 B1 EP 3757267B1 EP 20206076 A EP20206076 A EP 20206076A EP 3757267 B1 EP3757267 B1 EP 3757267B1
Authority
EP
European Patent Office
Prior art keywords
tool bar
knitting tool
profile
steel
flat
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
EP20206076.0A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3757267A2 (de
EP3757267A3 (de
Inventor
Martin Schorlemmer
Jonas Weismantel
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 Stoll R&D GmbH
Original Assignee
Karl Mayer Stoll R&D 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
Priority to ES20206076T priority Critical patent/ES2927820T3/es
Application filed by Karl Mayer Stoll R&D GmbH filed Critical Karl Mayer Stoll R&D GmbH
Priority to EP20206076.0A priority patent/EP3757267B1/de
Publication of EP3757267A2 publication Critical patent/EP3757267A2/de
Priority to CN202110345384.0A priority patent/CN114438659B/zh
Publication of EP3757267A3 publication Critical patent/EP3757267A3/de
Priority to ZA2021/08294A priority patent/ZA202108294B/en
Priority to TW110139913A priority patent/TWI826853B/zh
Priority to KR1020210148863A priority patent/KR102620282B1/ko
Priority to JP2021180231A priority patent/JP7364645B2/ja
Application granted granted Critical
Publication of EP3757267B1 publication Critical patent/EP3757267B1/de
Active 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
    • D04B27/06—Needle bars; Sinker bars
    • D04B27/08—Driving devices therefor
    • 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
    • D04B27/06—Needle bars; Sinker bars

Definitions

  • the present invention relates to a knitting tool bar for a warp knitting machine with a base body which is designed as a hollow profile.
  • Such a knitting tool bar is made, for example EP 3 216 903 B1 known.
  • Such knitting tool bars are usually formed with a base body made of a light metal such as magnesium or aluminum or of a fiber-reinforced plastic material. These materials are commonly used to keep the mass of the knitting tool bar small. Many of the knitting tool bars involved in the knitting process have to be accelerated and braked twice during a stitch formation process. The smaller the mass of the knitting tool bar, the lower the forces acting on the knitting tool bar. In this way, the drive power and, as a rule, also wear and tear can be kept small.
  • Knitting tool bars made of fiber-reinforced plastic also have the advantage of high temperature stability.
  • the thermally induced change in length, ie the thermal expansion, of such knitting tool bars is minimal.
  • the effort involved in manufacturing is relatively high.
  • Another casting tool bar is out DE 1 585 174 B known.
  • a bar is formed from a light metal, which is connected on one side to a steel strip that is prestressed in the longitudinal direction. In this way, one would like to be able to keep the thermal expansion small.
  • the invention is based on the task of minimizing problems with temperature changes at high mechanical loads.
  • the hollow profile preferably has at least one flat steel profile.
  • a steel flat profile can also be referred to as "sheet metal" for short.
  • Several steel flat profiles can be connected to form the hollow profile of the base body to train. The connection can take place, for example, by welding, embossing, crimping or clinching.
  • the steel flat profile is shaped. Shaping can be done by buckling or bending. In the case of a buckling, the buckling line is parallel to the longitudinal extension. In a bend, a line on which the midpoint of the bend radius is located also lies parallel to the longitudinal extension.
  • the individual steel flat profile can be given increased mechanical rigidity by shaping. Accordingly, the respective steel flat profile can be made relatively thin.
  • a steel flat profile can certainly have several shaped sections in the circumferential direction of the knitting tool bar.
  • At least one flat steel profile preferably has two areas that are connected to one another.
  • the steel flat profile then forms a loop or a circuit in cross section.
  • the two areas can be connected directly, for example by welding the two areas to one another. It is also possible to arrange another element between the two areas, which for example protrudes from the base body and serves as a mounting surface for knitting tools.
  • the hollow profile of the base body is made up of several flat steel profiles.
  • at least one or each flat steel profile it is possible for at least one or each flat steel profile to have at least one curvature or at least one kink.
  • At least one wall of the hollow profile preferably has at least one thickening in which a fastening profile is provided.
  • the fastening profile can be designed as an internal thread, for example.
  • the thickening can be produced, for example, by the internal thread being produced by flow drilling. The material displaced from the hole then forms the thickening.
  • the hollow profile preferably has at least two different wall thicknesses.
  • the wall thicknesses can then be adapted to the different load situations. In some cases, acceleration in a first direction is greater than acceleration in a second direction transverse to the first direction.
  • the wall thickness that has to withstand the acceleration in the first direction can then be chosen to be slightly larger.
  • At least one wall of the hollow profile has at least two different wall thicknesses. Different wall thicknesses can also be provided in one wall.
  • the hollow profile has a maximum average wall thickness in the range from 1 to 10 mm, in particular from 2 to 5 mm. You can then form the hollow profile with a relatively low mass. The wall thickness can be kept small.
  • At least one wall of the hollow profile preferably has at least one recess.
  • the mass of the base body can continue to be used through the recess.
  • the hollow profile preferably has several sections in the longitudinal direction.
  • a joint between two sections is preferably arranged on a lever of a warp knitting machine.
  • the sections can thus be positioned in a favorable manner.
  • the hollow profile preferably has at least one stiffening rib, which is designed in particular as a flat steel profile.
  • the stiffening rib serves to stiffen the hollow profile, so that the hollow profile can otherwise be dimensioned to be relatively weak. If a steel flat profile is used, the stiffening rib can be manufactured inexpensively.
  • the stiffening rib is located at at least one end of a section. This facilitates production.
  • the hollow profile has at least one reinforcement bead.
  • the stiffening bead can be formed, for example, by embossing.
  • the base body 1 shows schematically a base body 1 of a knitting tool bar, which is designed as a hollow profile, and thus forms a hollow profile.
  • the base body 1 has a cavity 2 which is formed by a flat steel section 3 . That Steel flat profile 3 is bent several times. It has two areas 4 , 5 which are connected to one another via a knitting tool holder 6 .
  • the areas 4, 5 are arranged at the ends of the flat steel profile 3 running parallel to the longitudinal direction. However, this is not mandatory.
  • the areas 4, 5 are welded to the knitting tool holder 6, for example. Other connection options are conceivable.
  • the steel flat profile 3, which forms the base body 1, has a total of five bends 7-11 in the present case.
  • the apex of each bend 7-11 runs parallel to the longitudinal extent of the base body 1.
  • the steel flat profile 3 has a thickening 12 .
  • a threaded hole 13 is arranged, with which the base body 1 can be attached to levers of a warp knitting machine, not shown.
  • the knitting tool holder 6 has a thickening 14 with a bore 15, so that in figure 1 knitting tools not shown in detail can attach to the knitting tool holder 6.
  • the knitting tool holder 6 can also be designed as a flat steel profile.
  • the thickening 12, 14 can be produced by producing the bores 13, 15 by flow drilling. In the process, material is displaced from the flat steel profile 3 or the knitting tool holder 6, which later forms the thickening 12, 14.
  • a fastening profile for example an internal thread, can be provided in the bores 13, 15.
  • Such an internal thread can also be produced in other ways, for example by using a blind rivet nut or a weld nut or a cage nut. Production by flow drilling is advantageous, however, because this does not increase the mass of the base body 1 .
  • FIG. 3 shows a second embodiment of a base body 1 designed as a hollow profile, in which several flat steel profiles 16-19 are assembled.
  • the steel flat profile 16 is designed as a flat profile.
  • the steel flat profile 19 is designed as an L-shaped profile, ie it has a kink.
  • the other two flat steel profiles 17, 18 are curved, ie have curves.
  • the flat steel profile 16 is connected to the flat steel profile 17 at a weld seam 20 .
  • the weld seams 20 to 23 connect adjacent steel flat profiles.
  • the L-shaped profile of the steel flat profile 19 contributes to the rigidity of the base body.
  • the steel flat profile 16 is formed with two sections 24, 25 which are connected to one another via a bending line 26.
  • Section 24 has a greater wall thickness than section 25 .
  • the section 25 of the flat steel profile 16 has a wall thickness which is greater than the wall thicknesses of the flat steel profiles 17 , 18 .
  • the flat steel profile 16 is in turn connected to the flat steel profile 17 via the weld seam 20 .
  • the flat steel profile 16 is connected to the flat steel profile 18 via the weld seam 21 .
  • the flat steel profile 19 is connected to the flat steel profile 18 via the weld seam 22 .
  • the steel flat profile 19 is connected via the weld seam 23 both to the section 24 of the steel flat profile 16 and to the steel flat profile 17 .
  • figure 5 shows an embodiment of the base body 1, which is of 4 is equivalent to.
  • the steel flat profile 17 is largely flat. Only in the area of the weld seam 20 is the steel flat profile 17 slightly angled, so that a relatively large contact zone between the two steel flat profiles 16, 17 is formed here.
  • FIGS. 6 and 8 show a further embodiment of the base body 1, in which two further features have been added.
  • the base body 1 is provided with stiffening ribs 27, 28 on both of its end faces in the longitudinal direction.
  • the stiffening ribs 27, 28 can, for example, be welded to the flat steel profiles 16-19.
  • the stiffening ribs 27, 28 can have recesses 29, 30 in order to keep the mass of the stiffening ribs 27, 28 small.
  • the stiffening ribs 27, 28 can also be designed as flat steel profiles.
  • the flat steel sections 16 and 18 are also provided with recesses 31, 32 in order to keep the mass of the flat steel sections 16, 18 small. Furthermore, the flat steel profile 18 has reinforcing beads 33 which can be embossed into the flat steel profile 18, for example.
  • stiffening ribs 27, 28 can be provided in all base bodies.
  • the stiffening ribs 27, 28 are arranged at the ends of a base body.
  • a stiffening rib 27 can also be arranged in the middle of the base body 1, ie in the cavity 2. The embodiment according to FIG 7 is described in more detail below.
  • the recesses 31, 32 can be provided not only in flat steel profiles 16, 18, but in principle in all flat steel profiles, ie also in flat steel profiles 3, 17, 19.
  • the stiffening beads 33 can also be provided in all flat steel profiles 3, 16-19.
  • the stiffening rib 27 is connected to the two flat steel profiles 16, 17 and connects the flat steel profiles 16, 17 at the same time to the flat steel profile 19, which in turn is L-shaped.
  • the connection can be made, for example, by welding.
  • the Figures 9 to 11 show the base body 1 together with knitting tools 34, which are designed as knitting needles in the present embodiment. Other knitting tools are possible.
  • a needle carrier 35 is connected to a base body, as shown in Figures 1 and 2 is shown.
  • the needle carrier 35 is connected to the knitting tool holder 6 .
  • the connection is made here via screws that are screwed into the bore 15.
  • the knitting tools 34 are held in the needle carrier 35 via a cover 36, as is known per se.
  • the needle carrier 35 is supported on the rounding 11 of the flat steel profile 3 .
  • the rounding 11 is adjacent to the knitting tool holder 6 .
  • the 10 shows a base body 1 after 3 with a needle carrier 35 to which in turn knitting tools 34 in the form of knitting needles are attached.
  • the needle carrier 35 is connected to the flat steel profile 19 .
  • the needle carrier 35 is with connected to one leg of the L-shaped flat steel profile 19 and can be supported on the other leg of the L-shaped flat steel profile 19 .
  • a needle carrier 35 for the knitting tools 34 is connected to the base body 1 along two welding lines 37, 38, more precisely welded.
  • a weld line 37 is arranged on the flat steel section 17 .
  • the other welding line 38 is arranged at the end of the flat steel profile 18, which in this case is welded directly to the flat steel profile 17, specifically at a weld seam 39.
  • FIG 11 only three flat steel sections 16, 17, 18 are provided.
  • a body with a hollow profile which has different wall thicknesses, is here only in connection with the 4 shown.
  • different wall thicknesses can also be used in the other embodiments.
  • the different wall thicknesses can be realized, for example, in that individual sheet steel profiles have different wall thicknesses than other flat steel profiles. It can also be provided in the other configurations that a flat steel profile is designed with two different wall thicknesses.
  • the wall thicknesses of the hollow profiles and thus the wall thicknesses of the steel flat profiles are in the range from 1 to 10 mm, in particular from 2 to 5 mm.
  • the mass of the base body 1 can be kept small in that the average wall thickness is in the range from 1 to 10 mm, in particular from 2 to 5 mm.
  • the knitting tool bar which is formed using the base body 1, has a number of sections.
  • a section has a length in the range of 1 to 1.5 m, for example.
  • the stiffening ribs 27, 28 can be provided, as described above. If necessary, further stiffening ribs 27 can also be provided in the middle of these sections.
  • the sections preferably end where the warp knitting machine has levers with which the knitting tool bar is moved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
EP20206076.0A 2020-11-06 2020-11-06 Wirkwerkzeugbarre für eine kettenwirkmaschine Active EP3757267B1 (de)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP20206076.0A EP3757267B1 (de) 2020-11-06 2020-11-06 Wirkwerkzeugbarre für eine kettenwirkmaschine
ES20206076T ES2927820T3 (es) 2020-11-06 2020-11-06 Barra de herramientas de género de punto para una máquina de punto por urdimbre
CN202110345384.0A CN114438659B (zh) 2020-11-06 2021-03-31 用于经编机的编织工具梳栉
ZA2021/08294A ZA202108294B (en) 2020-11-06 2021-10-27 Warp knitting tool bar for a warp knitting machine
TW110139913A TWI826853B (zh) 2020-11-06 2021-10-27 經編機之經編工具梳櫛
KR1020210148863A KR102620282B1 (ko) 2020-11-06 2021-11-02 경편기용 경편 도구 바
JP2021180231A JP7364645B2 (ja) 2020-11-06 2021-11-04 経編み機用の経編みツールバー

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20206076.0A EP3757267B1 (de) 2020-11-06 2020-11-06 Wirkwerkzeugbarre für eine kettenwirkmaschine

Publications (3)

Publication Number Publication Date
EP3757267A2 EP3757267A2 (de) 2020-12-30
EP3757267A3 EP3757267A3 (de) 2021-04-21
EP3757267B1 true EP3757267B1 (de) 2022-09-07

Family

ID=73172475

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20206076.0A Active EP3757267B1 (de) 2020-11-06 2020-11-06 Wirkwerkzeugbarre für eine kettenwirkmaschine

Country Status (7)

Country Link
EP (1) EP3757267B1 (ja)
JP (1) JP7364645B2 (ja)
KR (1) KR102620282B1 (ja)
CN (1) CN114438659B (ja)
ES (1) ES2927820T3 (ja)
TW (1) TWI826853B (ja)
ZA (1) ZA202108294B (ja)

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1585174B1 (de) 1963-06-14 1969-11-20 Mayer Textilmaschf Barre aus Leichtmetall fuer Wirkwerkzeuge von Kettenwirkmaschinen
DE8816672U1 (de) * 1988-12-01 1990-04-19 Karl Mayer Textilmaschinenfabrik GmbH, 6053 Obertshausen Kettenwirkmaschine mit mindestens einer Barre
DE4237084C2 (de) * 1992-11-03 1995-04-13 Mayer Textilmaschf Wirknadelanordnung und zugehörige Wirknadel
DE19810117A1 (de) * 1998-03-09 1999-09-16 Stoll & Co H Flachstrickmaschine
EP1600543B1 (de) * 2004-05-27 2008-04-09 KARL MAYER TEXTILMASCHINENFABRIK GmbH Wirkwerkzeug-Barre
EP1770194A1 (de) * 2005-09-28 2007-04-04 KARL MAYER TEXTILMASCHINENFABRIK GmbH Wirkwerkzeug-Barre einer Wirkmaschine
DE102006014147B4 (de) * 2006-03-28 2008-01-24 Karl Mayer Textilmaschinenfabrik Gmbh Verfahren zum Herstellen einer Kunststoff-Wirkwerkzeugbarre und Kunststoff-Wirkwerkzeugbarre
DE102009020028B4 (de) * 2009-05-05 2017-02-16 Karl Mayer Textilmaschinenfabrik Gmbh Kettenwirkmaschine
EP2623652A1 (de) * 2012-01-31 2013-08-07 Karl Mayer Textilmaschinenfabrik GmbH Wirkwerkzeugbarre und Verfahren zum Erzeugen einer Wirkwerkzeugbarre
JP2014147517A (ja) * 2013-01-31 2014-08-21 Brother Ind Ltd ミシンの縫針冷却機構及びミシン
EP2770096B1 (de) * 2013-02-22 2015-09-02 Karl Mayer Textilmaschinenfabrik GmbH Kunststoff-Wirkwerkzeugbarre
JP2016123534A (ja) * 2014-12-26 2016-07-11 ブラザー工業株式会社 ミシンの縫針冷却機構、ミシン及び空気の吸排気構造
EP3216903B1 (de) * 2016-03-11 2019-05-08 Karl Mayer Textilmaschinenfabrik GmbH Kettenwirkmaschine
EP3249087A1 (de) * 2016-05-27 2017-11-29 Karl Mayer Textilmaschinenfabrik GmbH Barre einer kettenwirkmaschine
CN206368253U (zh) * 2016-12-29 2017-08-01 常州市武进永光机械有限公司 经编机的成圈机构

Also Published As

Publication number Publication date
CN114438659A (zh) 2022-05-06
ZA202108294B (en) 2022-08-31
TW202219347A (zh) 2022-05-16
JP7364645B2 (ja) 2023-10-18
EP3757267A2 (de) 2020-12-30
CN114438659B (zh) 2024-07-19
JP2022075616A (ja) 2022-05-18
KR20220061868A (ko) 2022-05-13
ES2927820T3 (es) 2022-11-11
KR102620282B1 (ko) 2024-01-02
TWI826853B (zh) 2023-12-21
EP3757267A3 (de) 2021-04-21

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