EP3643823A1 - Aiguille coulissante d'un métier à mailles jetées - Google Patents

Aiguille coulissante d'un métier à mailles jetées Download PDF

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Publication number
EP3643823A1
EP3643823A1 EP18202715.1A EP18202715A EP3643823A1 EP 3643823 A1 EP3643823 A1 EP 3643823A1 EP 18202715 A EP18202715 A EP 18202715A EP 3643823 A1 EP3643823 A1 EP 3643823A1
Authority
EP
European Patent Office
Prior art keywords
needle
hook
edge profile
shaft
edge
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
EP18202715.1A
Other languages
German (de)
English (en)
Other versions
EP3643823B1 (fr
Inventor
Klaus Brandl
Kay Obmann
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 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
Application filed by Karl Mayer R&D GmbH filed Critical Karl Mayer R&D GmbH
Priority to ES18202715T priority Critical patent/ES2890929T3/es
Priority to EP18202715.1A priority patent/EP3643823B1/fr
Priority to CN201910141986.7A priority patent/CN111101288B/zh
Priority to TW108128759A priority patent/TWI766180B/zh
Priority to KR1020190125780A priority patent/KR102285359B1/ko
Publication of EP3643823A1 publication Critical patent/EP3643823A1/fr
Application granted granted Critical
Publication of EP3643823B1 publication Critical patent/EP3643823B1/fr
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
    • D04B35/08—Spring or bearded needles
    • 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
    • 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
    • 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
    • D04B35/04—Latch needles

Definitions

  • the present invention relates to a warp knitting machine needle with a needle head which has a hook, a transition region adjoining the hook, the cross section of which increases in one direction away from the needle head, and a shaft.
  • Such a warp knitting needle is, for example, from DE 25 37 502 A1 known.
  • the pusher needles When operating a warp knitting machine, the pusher needles have to absorb forces during stitch formation.
  • the pusher needles are caused, for example, by laying the threads on a lateral bend, by pulling the thread and pulling off the goods in the longitudinal and transverse directions and through the rising of the pusher needle, in which the pusher needle loads a stitch that has to slip onto the shaft from the area of the hook to compress in the longitudinal axis.
  • the needles are z. B. made by punching from sheet metal or by hitting a wire. After punching, the punch burrs must be removed, which can be done, for example, by surface grinding. All sharp edges are rounded off a bit.
  • the loads on the slide needle described above also depend, among other things, on the threads used to produce a knitted fabric. In general, the more inflexible these threads are, the greater the loads. For example, if a mosquito net is to be made, then a monofilament for the threads is used that is relatively stiff. Even with a relatively small fineness, the loads on the pusher needle are so great during operation of the warp knitting machine that there are more faults that can extend to the rupture of the pusher needle.
  • the invention is based on the object of being able to operate a warp knitting machine reliably even with threads which are difficult to process.
  • the structure of the slide needle can therefore basically be left unchanged.
  • the slide needle can be made reinforced up to a certain limit in order to be able to absorb the loads which are caused by the threads to be processed.
  • the slider needle can specifically with a predetermined edge profile, which can be generated, for example, by a machining step. Alternatively, you can create the edge profile by pressing.
  • the edge profiling means that the stitch formed on the hook can slide more easily onto the shaft when the pusher needle rises.
  • the edge profiling is preferably designed as a rounding. This further facilitates the movement of the stitch from the hook to the shaft.
  • the curve preferably has a curvature that increases away from the hook.
  • the transition area has a cross section that increases from the hook to the shaft. Parallel to this enlargement of the cross section, the curvature of the edge profiling increases in one direction away from the hook, so that the transition area becomes increasingly "angular". However, a sharp corner does not actually develop.
  • the edge profiling can be designed as a chamfer. A mixture of rounding and chamfer is possible. The increasing curvature then corresponds to a decreasing bevel width.
  • a ratio between an area, which is determined by a width and a depth of the transition area, and a cross-sectional area of the transition area from the hook to the shaft increases. This condition applies at every distance from the hook. In other words, the edge profiling leaves a larger area of the area, which is determined by the width and depth of the transition area, the closer you get to the hook.
  • the width is the direction in which the slider needles in the bar of the warp knitting machine are arranged side by side.
  • the depth is a direction perpendicular to this and perpendicular to the longitudinal extension of the pusher needle.
  • the ratio at a first end of the transition region which is adjacent to the hook is preferably at most 0.8.
  • the actual cross-sectional area of the transition area takes up only 80% of the area that would in itself be available through the product of the width and depth of the transition area.
  • the ratio at a second end of the transition region, which is adjacent to the shaft is at least 0.85.
  • edge profiling means that a maximum of 15% of the area determined by the width and depth of the transition area is not covered by the cross section of the transition area.
  • a front side of the slide needle preferably has a first edge profile and a rear side of the slide needle has a second edge profile, the first edge profile and the second edge profile being designed differently. This takes into account the fact that a groove is formed on the front of the slide needle, in which the slide moves during operation of the warp knitting machine.
  • the first edge profile preferably has a largest first radius of curvature which is smaller than a thickness of a wall which delimits a slide groove. This ends the edge profiling before it reaches the slide groove. The geometry of the slide groove can therefore be kept unchanged.
  • the second edge profiling has a largest second radius of curvature which is in the range from 10% to 30% of a width of the slide needle.
  • the largest second radius of curvature is therefore relatively large.
  • edge profiling continues in the shaft. For example, it can run out in the shaft, so it does not have to stop immediately at the end of the transition area.
  • edge profiling is limited to a stitch formation area of the slide needle.
  • the stitch formation range basically corresponds to the stroke or the lifting height of the slide needle in the operation of the warp knitting machine. An additional edge profiling is not necessary.
  • 1a and 2a show the needle from the left rear while the Figures 1b and 2b point the slide needle from the right front.
  • a warp knitting machine needle 1 has a needle head 2 with a hook 3.
  • the hook 3 is followed by a transition region 4, the cross section of which increases in one direction away from the needle head 2.
  • a transition area 4 there is a shaft 5, at the end of which is remote from the needle head 2 a needle foot 6 is arranged.
  • the shaft 5 has a bar support surface 7 adjacent to the needle foot 6.
  • Fig. 1a shows a back 8 of the needle while Fig. 1b shows a front 9 of the needle.
  • a slide groove 10 is formed in the front 9, a slide groove 10 is formed.
  • the slider groove serves to accommodate a slider during operation of the warp knitting machine, with which a catch chamber 11 is closed when the needle pulls a thread through a stitch that has previously formed on a stitch-forming region 12 during a stitch-forming process.
  • the cross section of the transition region 4 increases from the needle head 2 to the shaft 5. Accordingly, a stitch that has formed in the area of the needle head 2 must widen when the slider needle 1 rises for the next stitch formation process in order to in turn pull a warp thread through the stitch previously formed on the slider needle. This is well known.
  • This stress can only be absorbed to a limited extent by reinforcing the slide needle 1.
  • An increase in the width of the needle 1, that is, a reinforcement parallel to the ingot support surface 7, is only possible to a limited extent because the thickness of the needle 1 that can be influenced by such a reinforcement is often already determined by the fineness, that is, the number of needle needles per inch.
  • a reinforcement in the depth direction, ie in the direction between the rear 8 and front 9, is also only possible to a limited extent.
  • the transition between the needle head 2 and the shaft 5 cannot be made over a very short distance because the stitch would then have to be expanded too quickly.
  • the slide needle 1 is provided with an edge profile which changes continuously between the hook 3, that is to say the needle head 2 and the shaft 5. This continuous change does not have to take place continuously over the entire distance between the needle head 2 and the shaft 5. However, it should take place in the stitch-forming region 12, in which the stitch must widen during operation.
  • This part extends from the needle head 2 to approximately a position 13. However, the position 13 can be different for different types of needles 1 are also in different places.
  • the stitch-forming part 12 usually has a length of 7 mm to 17 mm.
  • the edge profile is composed of a first edge profile 14 on the front side 9 of the slide needle 1 and a second edge profile 15 on the rear side 8 of the slide needle 1.
  • the first edge profile 14 and the second edge profile 15 are designed differently.
  • the first edge profile 14 and the second edge profile 15 can be designed, for example, as a rounding.
  • the rounding can follow a circular line in cross-section, even if this is not absolutely necessary.
  • the circular line is used for the purpose of simplifying the explanation.
  • a radius of curvature can be defined here.
  • the edge profiles 14, 15 each have curves, the special feature here being that each curve in each case has a curvature that increases away from the hook 3. In relation to a circular curvature, this means that the radius of curvature decreases in a direction away from the needle head 2.
  • the first edge profile 14 and the second edge profile 15 can also be designed as a chamfer. It is also possible to design one of the edge profiles 14, 15 as a curve and the other edge profile 14, 15 as a chamfer or to have a curve in one or both edge profiles 14, 15 merge into a chamfer or vice versa. The increasing radius of curvature then corresponds to a decreasing width of the chamfer, i.e. H. the edge profiling then becomes "sharper".
  • the ratio at a first end of the transition region 4, which is adjacent to the hook 3, can be a maximum of 0.8, i. H. the cross-sectional area is 80% of the area defined by the product of width and depth.
  • the ratio can be at least 0.85, i. H. here the cross-sectional area takes up at least 85% of the area formed by the product of width and depth.
  • the second profile 15 on the rear side 8 has a smaller curvature, that is to say a larger radius of curvature, than the second edge profile 14 on the front side 9 of the slide needle 1.
  • the radius of curvature of the first edge profiling is limited, inter alia, by the slide groove 10.
  • the slide groove 10 is formed between two walls 18, 19.
  • the first edge profile 14 each has a largest first radius of curvature that is smaller than a thickness of the wall 18, 19 that delimits the slide groove 10.
  • the second edge profiling has a largest second radius of curvature, which is in the range from 10% to 30% of the width of the needle 1, that is to say the distance between the left side flank 16 and the right side flank 17.
  • edge profiles 14, 15 can continue in the shaft 5. As stated above, however, it is sufficient if the edge profiles 14, 15 are limited to the stitch formation region 12 of the slide needle 1.
  • the hook 3 often has a circular cross section. At least the hook 3 also has an edge profile with a corresponding curvature. It can now be ensured that the first edge profile 14 and above all the second edge profile 15 continuously merge into the hook 3.
  • Fig. 3 shows a side view of the needle 1, in which two sectional views CC and DD can be seen.
  • Fig. 3b shows a sectional view of the needle 1 along the line CC.
  • Fig. 3c shows the sectional view of the needle 1 along the line DD.
  • the change in edge profiling is by comparing Fig. 3b With Fig. 3c clearly recognizable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
EP18202715.1A 2018-10-25 2018-10-25 Aiguille coulissante d'un métier à mailles jetées Active EP3643823B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
ES18202715T ES2890929T3 (es) 2018-10-25 2018-10-25 Aguja de corredera de una máquina de género de punto por urdimbre
EP18202715.1A EP3643823B1 (fr) 2018-10-25 2018-10-25 Aiguille coulissante d'un métier à mailles jetées
CN201910141986.7A CN111101288B (zh) 2018-10-25 2019-02-26 经编机复合针
TW108128759A TWI766180B (zh) 2018-10-25 2019-08-13 用於經編機的複式針
KR1020190125780A KR102285359B1 (ko) 2018-10-25 2019-10-11 경편기용 복합침

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18202715.1A EP3643823B1 (fr) 2018-10-25 2018-10-25 Aiguille coulissante d'un métier à mailles jetées

Publications (2)

Publication Number Publication Date
EP3643823A1 true EP3643823A1 (fr) 2020-04-29
EP3643823B1 EP3643823B1 (fr) 2021-06-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP18202715.1A Active EP3643823B1 (fr) 2018-10-25 2018-10-25 Aiguille coulissante d'un métier à mailles jetées

Country Status (5)

Country Link
EP (1) EP3643823B1 (fr)
KR (1) KR102285359B1 (fr)
CN (1) CN111101288B (fr)
ES (1) ES2890929T3 (fr)
TW (1) TWI766180B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3702504B1 (fr) * 2020-06-30 2022-09-07 KARL MAYER STOLL R&D GmbH Métier à tricoter chaîne, système d'aiguille à coulisse et procédé de fabrication d'une étoffe tricotée élastique
CN113512815B (zh) * 2021-07-16 2022-10-18 广州市赛德精工科技有限公司 一种经编机槽针

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2537502A1 (de) 1974-09-04 1976-03-18 Wirkmaschinenbau Karl Marx Veb Schiebernadel fuer maschenbildende textilmaschinen, wie strick-, kettenwirk-, naehwirk-, haekelgalon- o.dgl. maschinen
DE3143743A1 (de) * 1981-11-04 1983-05-11 Karl Mayer Textil-Maschinen-Fabrik Gmbh, 6053 Obertshausen "schiebernadel fuer kettenwirkmaschinen"
DE4344375C1 (de) * 1993-12-24 1995-01-05 Liba Maschf Schiebernadel für eine Kettenwirkmaschine

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU419587A1 (ru) * 1971-08-02 1974-03-15 Всесоюзный научно исследовательский институт легкого , текстильного машиностроени Язычковая игла для вязальной машины
DD123361A1 (fr) * 1975-12-11 1976-12-12
DD154335A1 (de) * 1980-12-31 1982-03-17 Thomas Blieske Verfahren zur herstellung von wirkwerkzeugen
DE3133266C2 (de) * 1981-08-22 1988-12-22 Theodor Groz & Söhne & Ernst Beckert Nadelfabrik KG, 7470 Albstadt Gestanztes Strickwerkzeug für Strick- oder Wirkmaschinen
DE8706529U1 (de) * 1987-05-07 1987-06-19 Theodor Groz & Söhne & Ernst Beckert Nadelfabrik KG, 7470 Albstadt Zungennadel für maschenbildende Textilmaschinen
DE3827265A1 (de) * 1988-08-11 1990-02-15 Mayer Fa Karl Verfahren und kettenwirkmaschine zur herstellung von polware
DE10018897A1 (de) * 2000-04-14 2001-10-25 Sipra Patent Beteiligung Strickmaschinennadel
DE10164550A1 (de) * 2001-12-18 2003-07-10 Sipra Patent Beteiligung Nadel für Strick- oder Wirkmaschinen und damit ausgerüstete Strickmaschine
CN2841704Y (zh) * 2005-09-26 2006-11-29 陈国标 移圈针
CN202626539U (zh) * 2012-05-30 2012-12-26 浙江飞跃威特科技股份有限公司 一种电脑横机的长针脚
CN203795100U (zh) * 2014-01-21 2014-08-27 泉州恒毅机械有限公司 一种新型移圈罗纹机用中间针
CN204282009U (zh) * 2014-11-28 2015-04-22 福建信亿机械科技有限公司 织制提花网布的槽针
CN205856770U (zh) * 2016-06-14 2017-01-04 诸暨市科军机械有限公司 一种袜机提花针
CN105937091A (zh) * 2016-06-21 2016-09-14 大津编物（无锡）有限公司 防起毛钩针
EP3354780B1 (fr) * 2017-01-25 2022-03-09 KARL MAYER STOLL R&D GmbH Métier à tricoter à chaîne
CN206928044U (zh) * 2017-04-25 2018-01-26 浙江诸暨钇澎机械股份有限公司 连接式袜机钩针

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2537502A1 (de) 1974-09-04 1976-03-18 Wirkmaschinenbau Karl Marx Veb Schiebernadel fuer maschenbildende textilmaschinen, wie strick-, kettenwirk-, naehwirk-, haekelgalon- o.dgl. maschinen
DE3143743A1 (de) * 1981-11-04 1983-05-11 Karl Mayer Textil-Maschinen-Fabrik Gmbh, 6053 Obertshausen "schiebernadel fuer kettenwirkmaschinen"
DE4344375C1 (de) * 1993-12-24 1995-01-05 Liba Maschf Schiebernadel für eine Kettenwirkmaschine

Also Published As

Publication number Publication date
KR20200047327A (ko) 2020-05-07
KR102285359B1 (ko) 2021-08-03
CN111101288A (zh) 2020-05-05
TWI766180B (zh) 2022-06-01
ES2890929T3 (es) 2022-01-25
CN111101288B (zh) 2022-05-24
EP3643823B1 (fr) 2021-06-30
TW202016384A (zh) 2020-05-01

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