EP2999815B1 - Schiebernadel - Google Patents

Schiebernadel Download PDF

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Publication number
EP2999815B1
EP2999815B1 EP14725465.0A EP14725465A EP2999815B1 EP 2999815 B1 EP2999815 B1 EP 2999815B1 EP 14725465 A EP14725465 A EP 14725465A EP 2999815 B1 EP2999815 B1 EP 2999815B1
Authority
EP
European Patent Office
Prior art keywords
hook
sliding
needle
tongue
recess
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
EP14725465.0A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2999815A1 (de
Inventor
Jürgen Schneider
Andreas Dietz
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.)
Groz Beckert KG
Original Assignee
Groz Beckert KG
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 Groz Beckert KG filed Critical Groz Beckert KG
Publication of EP2999815A1 publication Critical patent/EP2999815A1/de
Application granted granted Critical
Publication of EP2999815B1 publication Critical patent/EP2999815B1/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
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/02—Knitting tools or instruments not provided for in group D04B15/00 or D04B27/00
    • D04B35/06—Sliding-tongue needles

Definitions

  • the invention relates to a slider needle, in particular for mesh-forming textile machines, such as a knitting needle.
  • the needle has a needle body.
  • the needle body can be arranged in a guide groove of a needle bed of the textile machine, so that its base surface rests on the groove bottom or a guide surface in the guide groove.
  • a needle hook is provided at the free end of the needle body.
  • the needle hook extends arcuately up to a hook tip and thus limits a hook inside area.
  • a slider of the needle is movably mounted relative to the needle body.
  • a guide is available.
  • a guide may be present on the needle body or on the slider, a groove in which engages the other part.
  • a slide groove for receiving the slider is present on the needle body.
  • the slider can be moved to a closed position so that it closes the hook inner area. Such a closed position, the slider has in the stitch Abzzi too.
  • the hook inner region In a retracted position of the slider, which may be referred to as the home position, the hook inner region is open and a stitch can be received by the needle hook in the hook inner region.
  • Such slide needles for stitch-forming textile machines are known.
  • the two slide blades are on opposite sides of the needle hook.
  • There is a stitch support surface on each pusher sheet for holding one or more stitches.
  • the two slide blades are spread apart and form between them a continuous receiving slot for the needle hook.
  • a similar slider needle is also off DE 60 132 233 T2 known.
  • the position of the two slide blades relative to each other in the retracted initial position and the slot for receiving the needle hook between the slide blades in the closed state of the needle valve are not described here.
  • the slider needle has a needle body with a longitudinally extending shaft. A height direction is aligned at right angles to the longitudinal direction.
  • the needle body has a needle hook at its stitch forming end. The needle hook defines a hook inner area for receiving a stitch.
  • the needle hook has a Hakenendab mustard with two Hakencontent lake following a hook tip.
  • the two hook side surfaces are arranged in a transverse direction at a distance from each other.
  • the transverse direction is aligned perpendicular to the longitudinal direction and the height direction.
  • a slider which consists of two slide blades, is movably mounted relative to the needle body, for example in a slide groove.
  • the slider can be moved between a home position in which the hook interior is opened and a stitch-off position in which the slider is in contact with the needle hook and closes the hook inner area.
  • one or more stitches may be held or worn by the slider.
  • each slide sheet on a mesh support surface.
  • the mesh support surface is located on the top of each slide sheet.
  • the hook recess is formed between the free blade ends.
  • the hook recess is open in the longitudinal direction in the starting position of the slider and thus to the hook tip of the needle hook.
  • the hook recess is bounded in the transverse direction by two opposing recess inner surfaces. At each slide sheet a recess inside surface is present. In the stitch reduction position, the needle hook engages in the hook recess. In particular, the recess inner surfaces abut against a respectively assigned hook side surface. In this stitch-off position, there is a gap between each recess inner surface and the associated hook side surface. The gap has a gap width in the transverse direction. This gap width changes in height direction. Viewed in cross section through the hook and the slider blades, the gap is thus triangular or wedge-shaped.
  • each slide sheet is in the Forked position at a respective contact point line on Needle hook on.
  • the frictional force component occurring in the vertical direction between the needle hook and the slider blade during a relative movement from the starting position into the stitched-off position can be reduced.
  • the linear contact at the contact point between in each case a recess inner surface and the associated hook side surface means a contact which has a larger dimension in the longitudinal direction than in the height direction H.
  • the dimension of the linear contact in the longitudinal direction L in the Fastening position is at least a factor 5 to 10 larger than in the height direction H.
  • the hook recess has a recess width in the transverse direction between the two recess inner surfaces.
  • the gap width changing in the stitch-off position in the height direction is formed by a recess width changing in the starting position and in the stitch-off position in the vertical direction.
  • the recess width increases in the height direction from the top of the slider towards the shaft.
  • the hook recess therefore has viewed from the front in the longitudinal direction viewed in the height direction down to the shaft towards funnel or wedge-shaped shape widening.
  • the two recess inner surfaces at the respective leaf end of a slide blade, which delimit the hook recess are thus not arranged parallel to one another but obliquely inclined to one another.
  • This embodiment of the hook recess leads to an inclined alignment of the two slide blade ends or at least of the two recess inner surfaces with respect to a central longitudinal plane through the slider needle.
  • the gap width of the two column changes in the height direction, in the stitch-off position between the two Hakenenvid and the respective adjacent to the contact surface recess inside surface are formed.
  • the gap width changing in the mesh deflection position in the height direction can also be achieved by a hook width of the hook end portion which changes in the height direction.
  • the two hook side surfaces may be inclined relative to each other.
  • the hook width decreases in the height direction towards the hook inner area. This also makes it possible to achieve a line-like contact at the contact point between a respective recess inner surface and the associated hook side surface in the stitch deflection position.
  • the mesh bearing surface can transition into an end flank.
  • This end flank may be present at an end projection of the slider blade.
  • the end flank extends in a direction oblique or transverse to the stitch support surface and thereby forms a stop for a mesh present on the stitch support surface.
  • the two slide blades are in their initial position, with an open hook inner region, preferably at a contact point to each other.
  • the contact point is in particular directly adjacent to the adjacent end edges of the two slide blades.
  • the stitch held on the stitch support surface is not widened by the adjoining slide blades.
  • the width of the slider in a transverse direction transverse to the longitudinal direction is thereby low in the initial position of the slider.
  • the hook recess is thus preferably closed and forms therefore at least no completely continuous slot between the two slide blades.
  • the end flanks at the two blade ends of each pusher blade may each be present at an end projection.
  • This end projection may have a maximum when viewed in the height direction.
  • Each of the trailing edges continues an associated mesh bearing surface of the slider blade along the end projection and extends to the maximum.
  • the two blade ends abut each other in their initial position with the hook inner region open along the entire end flanks.
  • the two blade ends along the end flanks from the top of the slider considered at least to the maximum without a gap open to the hook recess to each other.
  • each slide blade is delimited at the end opposite the sheet end by a support flank extending transversely or obliquely to the stitch support surface.
  • the mesh support surface or a mesh support area on each slide leaf is limited on the one hand by the end flank on the end projection and on the other hand by the support flank and the accidental slipping of stitches from the slide is avoided.
  • the wall thickness of the slide blades in the region of the hook recess may be smaller than at the locations where the slide blades are not adjacent to the hook recess. As a result, a total of thin slide blades can be realized.
  • the hook recess can thus be formed by reducing the wall thickness.
  • the shape of the slide blades in particular in the region of the hook recess, can be carried out by a forming process without material-removing machining. This saves material.
  • a solidification preferably strain hardening, can be achieved in the region of the hook recess, so that a sufficient strength of the slide blades is also achieved adjacent to the hook recess, where a smaller wall thickness may be present.
  • hook recess by a material-removing, for example, machining the slide blades or the two blade ends.
  • the hook side surfaces can be formed, for example, by a respective recess or flattening on the needle hook.
  • the hook side surfaces may be planar surfaces, which in one embodiment may be aligned parallel to one another. However, as mentioned, it is also possible that the hook side surfaces do not run parallel to each other, so that the cross section of the hook in the hook end section changes in the height direction.
  • the needle hook preferably tapers in the hook end section through the non-parallel hook side surfaces towards the hook inner region. In this embodiment, the changing in height direction gap width can thus be achieved by the changing hook width.
  • the two recess inner surfaces can also be aligned with each other so that the recess width does not change in height direction.
  • the invention relates to a slider needle 20 with a needle body 21.
  • the needle body 21 has a shaft 22 on which a preferably at least partially planar base 23 is formed.
  • the shaft 22 extends in a longitudinal direction L.
  • the height direction H is usually perpendicular to the flat portion (or on one of the planar portions) of the base 23.
  • the base 23 is provided on a narrow side of the slider needle 20.
  • the slider needle 20 is intended to be arranged in a mesh-forming textile machine, such as a knitting machine, in a groove.
  • the base surface 23 is located on the groove base or arranged in the groove edition of the textile machine.
  • the textile machine itself is not illustrated in the drawing.
  • FIG. 1 two slider needles 20 are shown as they may be arranged in a textile machine. The slider needles 20 are moved back and forth in the groove during the knitting process.
  • the shaft 22 is in a needle hook 24 via.
  • the needle hook 24 extends in an arc to the needle tip 25, which is arranged in a height direction H at a distance from the base surface 23.
  • the height direction H is aligned at right angles to the base surface 23 of the needle body 21.
  • the arcuate needle hook 24 bounded in its interior a hook inner region 26th
  • the needle hook 24 has a hook end section 27 on which, in a transverse direction Q, two hook side surfaces 28 are spaced apart.
  • the transverse direction Q is oriented at right angles to a longitudinal center plane through the slider needle 20.
  • the transverse direction Q, the height direction H and the longitudinal direction L are aligned at right angles to each other.
  • the two hook side surfaces 28 may be designed as flat surfaces, as is the case in the embodiment (compare in particular FIGS. 13 and 14 ).
  • the two hook side surfaces 28 may be aligned parallel to the height direction H ( FIG. 14 ).
  • the two hook side surfaces 28 may be inclined in the height direction H.
  • the hook width BH of the Hakenendabitess 27 is not constant in the vertical direction H.
  • the needle hook 24 can taper in the region of the hook end section 27 towards the hook inner region 26 ( FIG. 13 ).
  • the cross-sectional contour of the Hakenendabites 27 is approximately trapezoidal in this case, wherein the hook inner region 26 facing side and the hook inner region 26 facing away curved and connected by the preferably flat or flat hook side surfaces 28.
  • a slide groove 29 is provided, in which a slider 30 to the needle hook 24 toward or away from the needle hook 24 is movable and preferably arranged displaceable and / or pivotable.
  • the exact course of movement of the slider 30 during its movement within the slide groove 29 depends on the course of the slide groove 29 or the contour of the slider groove 29 associated bottom of the slider 30 from. The movement does not have to be linear.
  • the slider 30 of the needle 20 is between an initial position I ( FIGS. 2, 3 and 8th ) and a stitch reduction position II ( FIGS. 15 and 16 ) movable relative to the needle body 21.
  • the slider 30 can also be moved beyond the stitch abutment position II, as shown in FIG. 1 is exemplified.
  • a groove in the slider 30 may be present, in which a projection of the needle body 21 engages.
  • Other guide means for the movable mounting of the slider 30 on the needle body 21 may be provided deviating from the preferred embodiments illustrated herein.
  • the slider 30 In the initial position I, the slider 30 is not in contact with the needle hook 24. The hook inner region 26 delimited by the needle hook 24 is thus not completely closed. In the stitch reduction position II, the slider 30 is in contact with the hook 24, so that the hook inner region 26 is closed by the slider 30.
  • the slider 30 consists of two separate slide blades 31.
  • the two slide blades 31 are formed substantially similar. Compared to a longitudinal center plane through the needle 20, the slider 30 is configured symmetrically.
  • Each slider blade 31 has a free blade end 32. This free end of the sheet 32 is associated with the needle hook 24 and the slide blades 31 are in the stitch abutment position II with the blade end 32 on the needle hook 24 at.
  • each slide sheet 31 has a mesh support surface 33.
  • the stitch support surface 33 is provided on the upper side 34 of the slider 30 through the narrow side of the slider blade 31.
  • the mesh support surface 33 extends in the longitudinal direction L.
  • the mesh support surface 33 may be oriented at right angles to the height direction H or inclined in the transverse direction Q.
  • the mesh support surface 33 is bounded in the longitudinal direction L on both sides.
  • the mesh support surface 33 of a slide blade 31 continues in an end flank 35, which extends obliquely inclined in the height direction H and at the same time in the longitudinal direction L.
  • This end flank 35 is provided on an end projection 36 of the slider blade, which extends up to a maximum M (eg FIGS. 4, 5 and 11 ).
  • the maximum M represents a local maximum in a front region of the slide blade 31. In the height direction H, the maximum M is further away from the shaft 22 than the end flank 35 and the mesh bearing surface 33 of the slide blade 31. In the area of the maximum M, the end projection 36 of FIG Slide blade 31 rounded.
  • the mesh support surface 33 of each slide blade 31 is delimited by a support flank 37 which extends obliquely or transversely to the mesh support surface 33.
  • a support flank 37 which extends obliquely or transversely to the mesh support surface 33.
  • a hook recess 40 is formed between the two slide blades 31.
  • the hook recess 40 is bounded in each case by a recess inner surface 41 on one of the two slide blades 31.
  • the two recess inner surfaces 41 face each other in the transverse direction Q at a distance.
  • the distance between these two recess inner surfaces 41 in the transverse direction Q represents the recess width BA of the hook recess 40 ( Figures 3 and 8th ).
  • the gap 43 is wedge-shaped or approximately triangular in cross-section through the slider needle 20 and through the hook end portion 27.
  • the gap 43 has a gap width BS in the transverse direction Q.
  • This gap width BS is in the FIGS. 13 and 14 for example, drawn at a point in the vertical direction H.
  • the gap width BS is not constant in the vertical direction and, for example, as seen from the hook inner region 26, decreases as far as the contact point 42.
  • the contact point 42 is due to the gap 43 no area, but rather a line contact.
  • the contact surface is viewed in the longitudinal direction L by a multiple greater than in the height direction H. Therefore, it is spoken of a linear contact.
  • the contact area at the contact point 42 in the stitch deflection position II in the longitudinal direction L is greater by at least a factor of 5 to 10 than in the height direction H.
  • the hook width BH of the hook end section 27 changes in the height direction H.
  • the two recess inner surfaces 41 are aligned approximately parallel to one another, then that the recess width BH does not change in the height direction in the region of the hook recess 40, in which the needle hook 24 engages in the hook recess 40 in the stitch cut-off position II.
  • This principle solution is in FIG. 13 shown.
  • the hook width BH of the hook end portion 27 can be constant in the height direction H.
  • the recess width BA changes in this embodiment in the height direction H at least in the region of the hook recess 40, in which the needle hook 24 engages in the hook recess 40 in the hook recess 40.
  • This also creates a gap 43 in the stitched-off position II with gap width BS increasing away from the contact point 42.
  • the recess inner surfaces 41 at the contact point 42 lie only linearly against the associated hook side surfaces 48.
  • a gap 43 can also be formed in that the recess inner surfaces 41 extend at a different angle than the two hook side surfaces 28 with respect to a longitudinal center plane through the slider needle 20.
  • a gap 43 results, as described in connection with the examples FIGS. 13 and 14 was described.
  • This reduced contact area between the slider 30 or between the two slider blades 31 and the hook side surfaces 28 in the stitch reduction position II results in that the friction can be reduced during a relative movement between the slider 30 and the needle hook 24.
  • the relative movement between the slider 30 and the needle hook 24 is usually not exactly linear in the longitudinal direction L, but this movement has a movement component in the height direction H.
  • this movement has a movement component in the height direction H.
  • the height difference x between the burr or the highest point of the needle hook 24 and between the blade end 32 and in particular the maximum M at the end projection 36 is important (see FIG. 12 ).
  • This height difference x is decisive for the widening of a stitch 45.
  • the two slide blades 31 are with their Blade ends 32 preferably adjacent to the end flanks 35 to each other.
  • the hook recess 40 is formed by a forming process of the two slide blades 31.
  • a material-removing or machining of the slide blades 31 can thus be dispensed with for producing the hook recess 40.
  • the slide blades 31 extend away from one another to form the hook recess 40, so that the hook recess 40 forms with the recess width BA increasing from the top side 34 in the height direction H downwards.
  • the hook recess 40 could also be produced by a material-removing or machining of the slide blades 31.
  • the reduced to widen the hook recess 41 wall thickness is particularly in the FIGS. 8 and 10 recognizable.
  • This changing in height direction H wall thickness of the slide blades 31 adjacent to the recess inner surfaces 41 can be achieved by forming or by a material-removing or machining.
  • the hook recess 40 with a in the height direction changing recess width BA to form by a combination of reduced wall thickness and with respect to the longitudinal center plane of the needle 20 outwardly bent or deformed portions of the slide blades 31 in the region of the recess surfaces 41.
  • the invention relates to a slider needle 20 having a needle body 21 which has a needle hook 24.
  • the needle hook has two hook side surfaces 28 spaced apart in a transverse direction.
  • a slider 30 is movably disposed on the needle body. The slider 30 has no contact with the needle hook 24 in a starting position I. In a stitch deflection position II, the slider 30 abuts the needle hook 24.
  • the slider 30 has two slide blades 31. These have a mesh support surface 33 for receiving at least one stitch 45. At its free end of the blade 32, a hook recess 40 which is open toward the hook tip 40 is present. This is limited by a respective recess inner surface 41.
  • the recess inner surfaces 41 are arranged in a transverse direction Q at a distance from each other and thereby form the hook recess 40.
  • each recess inner surface 41 abuts an associated hook side surface 28 of the needle hook 24 at a contact point 42.
  • a gap 43 is formed in the height direction H following the contact point 42.
  • the gap 43 has in the transverse direction Q a gap width BS, which increases in the height direction H from the contact point 42 away.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Surgical Instruments (AREA)
  • Sewing Machines And Sewing (AREA)
EP14725465.0A 2013-05-22 2014-05-21 Schiebernadel Active EP2999815B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013105239.8A DE102013105239A1 (de) 2013-05-22 2013-05-22 Schiebernadel
PCT/EP2014/060471 WO2014187872A1 (de) 2013-05-22 2014-05-21 Schiebernadel

Publications (2)

Publication Number Publication Date
EP2999815A1 EP2999815A1 (de) 2016-03-30
EP2999815B1 true EP2999815B1 (de) 2017-03-08

Family

ID=50771283

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14725465.0A Active EP2999815B1 (de) 2013-05-22 2014-05-21 Schiebernadel

Country Status (9)

Country Link
US (1) US9670607B2 (ja)
EP (1) EP2999815B1 (ja)
JP (1) JP6373361B2 (ja)
KR (1) KR102139031B1 (ja)
CN (1) CN105209677B (ja)
DE (1) DE102013105239A1 (ja)
HK (1) HK1216909A1 (ja)
PT (1) PT2999815T (ja)
WO (1) WO2014187872A1 (ja)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015105648A1 (de) 2015-04-14 2016-10-20 Groz-Beckert Kg Schieberfeder, Schieber, Schiebernadel, Führungsanordnung und Verfahren zum Herstellen wenigstens einer Schieberfeder
EP3290555A1 (de) * 2016-09-02 2018-03-07 Ulrich Hofmann Nadel zur maschenbildung an einer strick- oder kettenwirkmaschine, strick- oder kettenwirkmaschine mit mehreren solcher nadeln und verfahren zur herstellung einer solchen nadel
EP3702504B1 (de) * 2020-06-30 2022-09-07 KARL MAYER STOLL R&D GmbH Kettenwirkmaschine, schiebernadelanordnung und verfahren zum herstellen einer elastischen wirkware

Family Cites Families (26)

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Publication number Priority date Publication date Assignee Title
US1673634A (en) * 1927-05-25 1928-06-12 Scott & Williams Inc Knitting-machine needle
US2775108A (en) * 1953-03-31 1956-12-25 Vanity Fair Mills Inc Knitting machine needle device with operating means and method
JPS476781Y1 (ja) * 1968-09-04 1972-03-10
US3584481A (en) * 1969-03-06 1971-06-15 Teihichi Kayashi Knitting needle for transferring stitches
DD114840A1 (ja) * 1974-09-04 1975-08-20
US5937673A (en) * 1997-05-01 1999-08-17 Shima Seiki Manufacturing, Ltd. Compound needle of a flat knitting machine
DE19913822C2 (de) * 1999-03-26 2001-02-22 Groz Beckert Kg Schiebernadel mit geteiltem Schieber
EP1178141B1 (en) 1999-04-15 2007-11-28 Shima Seiki Mfg., Ltd Compound needle of knitting machine
JP3538730B2 (ja) 1999-05-19 2004-06-14 株式会社島精機製作所 複合編成針
DE19950259C1 (de) * 1999-10-18 2001-01-25 Groz Beckert Kg Schiebernadel mit asymmetrisch geteiltem Schieber
TW477845B (en) * 1999-10-27 2002-03-01 Shima Seiki Mfg Guide mechanism of knitting member and compound needle assembling the guide mechanism therein
KR100706655B1 (ko) * 2000-10-20 2007-04-11 가부시키가이샤 시마세이키 세이사쿠쇼 복합 바늘
FR2821093B1 (fr) * 2001-02-20 2003-05-09 Steiger S A C Atel Const Aiguille a coulisse pour machine a tricoter
DE10130365C1 (de) * 2001-06-23 2003-01-23 Groz Beckert Kg Schiebernadel mit verbessertem Schieber
DE10130364C1 (de) * 2001-06-23 2003-02-13 Groz Beckert Kg Schiebernadel
KR100906752B1 (ko) * 2001-08-24 2009-07-09 가부시키가이샤 시마세이키 세이사쿠쇼 편기의 복합침
US7152437B2 (en) * 2002-12-20 2006-12-26 Shima Seiki Manufacturing, Ltd. Compound needle
JP3983720B2 (ja) 2003-06-25 2007-09-26 株式会社島精機製作所 複合針
DE10335464B4 (de) * 2003-08-02 2006-06-14 Groz-Beckert Kg Verfahren zum maschinellen Maschenbilden mit zugehörigen Maschenbildungselementen
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EP2096200B1 (de) * 2008-02-27 2011-06-08 Groz-Beckert KG Umhängenadel mit innen liegender Federspitze
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CN102822403B (zh) 2010-03-26 2014-05-21 株式会社岛精机制作所 复合针及横编机
JP5719544B2 (ja) 2010-08-06 2015-05-20 株式会社島精機製作所 横編機の複合針
CN201933277U (zh) 2010-12-30 2011-08-17 茅木泉 电脑针织横机的复合针
PT2581480T (pt) * 2011-10-12 2018-07-04 Groz Beckert Kg Agulha deslizante com cursor melhorado

Also Published As

Publication number Publication date
HK1216909A1 (zh) 2016-12-09
US20160160411A1 (en) 2016-06-09
WO2014187872A1 (de) 2014-11-27
PT2999815T (pt) 2017-04-20
JP2016522332A (ja) 2016-07-28
CN105209677A (zh) 2015-12-30
KR102139031B1 (ko) 2020-07-30
US9670607B2 (en) 2017-06-06
CN105209677B (zh) 2019-03-29
EP2999815A1 (de) 2016-03-30
DE102013105239A1 (de) 2014-11-27
JP6373361B2 (ja) 2018-08-15
KR20160010467A (ko) 2016-01-27

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