EP3643823B1 - 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
EP3643823B1
EP3643823B1 EP18202715.1A EP18202715A EP3643823B1 EP 3643823 B1 EP3643823 B1 EP 3643823B1 EP 18202715 A EP18202715 A EP 18202715A EP 3643823 B1 EP3643823 B1 EP 3643823B1
Authority
EP
European Patent Office
Prior art keywords
compound needle
hook
edge profiling
compound
needle
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
EP18202715.1A
Other languages
German (de)
English (en)
Other versions
EP3643823A1 (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 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
Application filed by Karl Mayer Stoll R&D GmbH filed Critical Karl Mayer Stoll R&D GmbH
Priority to EP18202715.1A priority Critical patent/EP3643823B1/fr
Priority to ES18202715T priority patent/ES2890929T3/es
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
    • 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
    • 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
    • D04B35/04—Latch needles

Definitions

  • the present invention relates to a warp knitting machine compound needle according to the preamble of claim 1.
  • Such a warp knitting machine compound needle is off DE 43 44 375 C1 known.
  • a warp knitting machine compound needle for example, is off DE 25 37 502 A1 known.
  • the compound needles In the operation of a warp knitting machine, the compound needles have to absorb forces during the loop formation.
  • the compound needles are made, for example, by laying the threads on a lateral bend the thread pull and the fabric take-off in the longitudinal and transverse direction and by the rise of the compound needle, in which the compound needle forms a loop that has to slip from the area of the hook onto the shaft, to compression in the longitudinal axis.
  • the compound needles are z. B. made by punching from sheet metal or by striking from a wire. After punching, the punch burrs must be eliminated, which can be done, for example, by vibratory grinding. All sharp edges are rounded off a bit.
  • the loads on the compound needle described above also depend, among other things, on the threads that are used to manufacture 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 that is relatively stiff is used for the threads. Even with a relatively small fineness, the loads on the compound needle are so great during operation of the warp knitting machine that more and more malfunctions occur that can even break the compound needle.
  • the invention is based on the object of being able to operate a warp knitting machine reliably even with threads that are difficult to process.
  • the structure of the compound needle can therefore basically be left unchanged.
  • the compound needle can be made reinforced up to a certain limit in order to be able to absorb the loads caused by the threads to be processed.
  • the compound needle is specifically provided with a predetermined one Edge profiling, which can be produced, for example, by a machining step. Alternatively, the edge profiling can also be produced by pressing.
  • Edge profiling makes it possible for the loop formed on the hook to slip more easily onto the shaft when the compound needle rises.
  • the transition area has a cross section that increases from the hook towards the shaft. In parallel with this enlargement of the cross section, the curvature of the edge profiling also increases in a direction away from the hook, so that the transition area becomes increasingly "angular". However, a sharp corner does not actually form.
  • the edge profiling is designed as a rounding. This further facilitates the movement of the loop from the hook onto the shaft.
  • edge profiling can be designed as a bevel. A mixture of rounding and chamfering 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 surface, which is determined by the width and depth of the transition area, free the closer you get to the hook.
  • the width is the direction in which the compound needles in the bar of the warp knitting machine are arranged side by side.
  • the depth is a direction perpendicular to and perpendicular to the longitudinal extent of the compound needle.
  • the ratio at a first end of the transition region which is adjacent to the hook is preferably a maximum of 0.8.
  • the actual cross-sectional area of the transition area takes up only 80% of the area that would be available in and of itself 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.
  • the edge profiling has the effect that a maximum of 15% of the area which is 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 compound needle preferably has a first edge profile and a rear side of the compound 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 side of the compound needle, in which the slide moves when the warp knitting machine is in operation.
  • the first edge profiling 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 retained unchanged.
  • the second edge profiling has a largest second radius of curvature which is in the range of 10% to 30% of a width of the compound 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 loop formation area of the compound needle.
  • the loop formation area basically corresponds to the stroke or the stroke height of the compound needle when the warp knitting machine is in operation. Any additional edge profiling is not required.
  • Figures 1a and 2a show the compound needle from the left behind while the Figures 1b and 2b show the compound needle from the front right.
  • a warp knitting machine compound needle 1 has a needle head 2 with a hook 3.
  • a transition area 4 adjoins the hook 3, the cross section of which increases in a direction away from the needle head 2.
  • a shaft 5 adjoins the transition region 4, at the end of which facing away from the needle head 2 a needle butt 6 is arranged.
  • the shaft 5 has an ingot support surface 7 adjacent to the needle butt 6.
  • Fig. 1a shows a back 8 of the needle while Figure 1b shows a face 9 of the needle.
  • a slide groove 10 is formed in the front side 9. The slide groove serves to receive a slide during operation of the warp knitting machine, with which a catching space 11 is closed when the needle pulls a thread through a stitch that was previously formed on a stitch-forming area 12 during a stitch-forming process.
  • the cross section of the transition area 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 has to widen when the compound needle 1 rises for the next stitch-forming process in order to in turn pull a warp thread through the stitch previously formed on the compound needle. This is well known.
  • compound needle 1 In the case of threads that are difficult to process because they are relatively stiff, for example, large forces act on compound needle 1 during such a loop formation process. By laying the threads, compound needles 1 are subjected to lateral bending, i.e. in the width direction.
  • the compound needles Due to the thread pull and the fabric take-off, the compound needles are loaded in the longitudinal and depth directions. Due to the shape of the compound needle 1, the compound needle 1 is subjected to compression in the longitudinal axis as it ascends through the mesh sliding from the needle head 2 onto the shaft 5.
  • the process material that is to say the thread or the stitch that is formed, is also heavily stressed when climbing, since the stitch has to slip from the needle head 2 onto the shaft 5 and is greatly expanded in the process. This expansion can be up to three times the size of the mesh.
  • This stress can only be absorbed to a limited extent by reinforcing the compound needle 1.
  • a reinforcement of the width of the compound needle 1, i.e. a reinforcement parallel to the bar support surface 7, is only possible to a limited extent because the thickness of the compound needle 1 that can be influenced by such reinforcement is often already determined by the fineness, i.e. the number of compound needles per inch.
  • a reinforcement in the depth direction, that is to say in the direction between the rear side 8 and the front side 9, is likewise 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 then the loop would have to be widened too quickly.
  • the compound 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 loop-forming area 12 in which the loop has to widen during operation.
  • This part extends from the needle head 2 to approximately a position 13. The position 13 can, however, vary with different types of compound needles 1 are also located in different places.
  • the loop-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 compound needle 1 and a second edge profile 15 on the rear side 8 of the compound needle 1.
  • the first edge profile 14 and the second edge profile 15 are designed differently.
  • the first edge profile 14 and / or the second edge profile 15 is formed as a rounding.
  • the rounding can follow a circular line in the 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 roundings, the special feature here being that each rounding has a curvature increasing 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.
  • first edge profile 14 and the second edge profile 15 can also be designed as a bevel. It is also possible to design one of the edge profiles 14, 15 as a rounding and the other edge profile 14, 15 as a bevel or to have a rounding transition into a bevel or vice versa in one or both edge profiles 14, 15.
  • the increasing radius of curvature then corresponds to a decreasing width of the chamfer, i.e. H. the edge profiling is then "sharper".
  • This area can be related to the cross-sectional area of the transition area 4 at the same position. This ratio now increases from the hook 3 to the shaft 5.
  • the ratio at a first end of the transition region 4 that 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. At the other end of the transition region 4, 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 first edge profile 14 on the front side 9 of the compound needle 1.
  • the radius of curvature of the first edge profile is limited, among other things, by the slide groove 10.
  • the slide groove 10 is formed between two walls 18, 19.
  • the first edge profiling 14 each has a largest first radius of curvature which is smaller than a thickness of the wall 18, 19 which delimits the slide groove 10.
  • the second edge profiling has a largest second radius of curvature which is in the range of 10% to 30% of the width of the compound 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 loop formation area 12 of the compound 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 profiling 14 and above all also the second edge profiling 15 continuously merge into the hook 3.
  • Fig. 3 shows a side view of the compound needle 1, in which two sectional views CC and DD can be seen.
  • Figure 3b shows a sectional view of the compound needle 1 along the line CC.
  • Figure 3c shows the sectional view of the compound needle 1 along the line DD. The change in the edge profile is achieved by comparing Figure 3b With Figure 3c clearly visible.

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

Claims (10)

  1. Aiguille à coulisse pour un métier à tricoter chaîne (1), pourvue d'une tête d'aiguille (2), laquelle comporte un crochet (3), d'une zone de passage (4) se raccordant sur le crochet (3), dont la section transversale s'agrandit dans une direction partant de la tête d'aiguille (2), et d'une tige (5), la zone de passage (4) comportant un profilage des arêtes (14, 15) qui varie en continu entre le crochet (3) et la tige (5), caractérisée en ce que le profilage des arêtes (14, 15) est conçu sous la forme d'un arrondi, l'arrondi comportant une courbure croissante en s'éloignant du crochet (3).
  2. Aiguille à coulisse selon la revendication 1, caractérisée en ce que die profilage des arêtes (14, 15) est conçu sous la forme d'un chanfrein.
  3. Aiguille à coulisse selon l'une quelconque des revendications 1 ou 2, caractérisée en ce que qu'un rapport entre une surface de section transversale de la zone de transition (4) et une surface qui est définie par une largeur et une profondeur de la zone de transition (4) grandit du crochet (3) vers la tige (5) .
  4. Aiguille à coulisse selon la revendication 3, caractérisée en ce que sur une première extrémité de la zone de passage (4) qui est voisine du crochet (3), le rapport est d'un maximum de 0,8.
  5. Aiguille à coulisse selon la revendication 3 ou 4, caractérisée en ce que sur une deuxième extrémité de la zone de transition (4) qui est voisine de la tige (5), le rapport est d'au moins 0,85.
  6. Aiguille à coulisse selon l'une quelconque des revendications 1 à 5, caractérisée en ce qu'une face antérieure (9) de l'aiguille à coulisse (1) comporte un premier profilage des arêtes (14) et une face postérieure (8) de l'aiguille à coulisse (1) comporte un deuxième profilage des arêtes (15), le premier profilage des arêtes (14) et le deuxième profilage des arêtes (15) étant conçus différemment.
  7. Aiguille à coulisse selon la revendication 6, caractérisée en ce que le premier profilage des arêtes (14) présente un premier rayon de courbure le plus grand qui est inférieur à une épaisseur d'une paroi (18, 19) qui délimite une rainure de coulisse (10).
  8. Aiguille à coulisse selon la revendication 6 ou 7, caractérisée en ce que le deuxième profilage des arêtes (15) présente un deuxième rayon de courbure le plus grand, qui se situe dans l'ordre de 10 % à 30 % d'une largeur de l'aiguille à coulisse (1).
  9. Aiguille à coulisse selon l'une quelconque des revendications 1 à 8, caractérisée en ce que le profilage des arêtes (14, 15) se poursuit dans la tige (5) .
  10. Aiguille à coulisse selon l'une quelconque des revendications 1 à 9, caractérisée en ce que le profilage des arêtes (14, 15) est limité à une zone de création des mailles de l'aiguille à coulisse (1), qui s'étend de la tête d'aiguille (2) sur une longueur de l'ordre de 7 mm à 17 mm.
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
EP18202715.1A EP3643823B1 (fr) 2018-10-25 2018-10-25 Aiguille coulissante d'un métier à mailles jetées
ES18202715T ES2890929T3 (es) 2018-10-25 2018-10-25 Aguja de corredera de una máquina de género de punto por urdimbre
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 EP3643823A1 (fr) 2020-04-29
EP3643823B1 true EP3643823B1 (fr) 2021-06-30

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Family Applications (1)

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EP18202715.1A Active EP3643823B1 (fr) 2018-10-25 2018-10-25 Aiguille coulissante d'un métier à mailles jetées

Country Status (5)

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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

Family Cites Families (19)

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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
DD114840A1 (fr) 1974-09-04 1975-08-20
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
DE3143743C2 (de) * 1981-11-04 1985-01-24 Karl Mayer Textil-Maschinen-Fabrik Gmbh, 6053 Obertshausen Schiebernadel für Kettenwirkmaschinen
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
DE4344375C1 (de) * 1993-12-24 1995-01-05 Liba Maschf Schiebernadel für eine Kettenwirkmaschine
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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

Also Published As

Publication number Publication date
ES2890929T3 (es) 2022-01-25
KR20200047327A (ko) 2020-05-07
KR102285359B1 (ko) 2021-08-03
EP3643823A1 (fr) 2020-04-29
CN111101288A (zh) 2020-05-05
TW202016384A (zh) 2020-05-01
CN111101288B (zh) 2022-05-24
TWI766180B (zh) 2022-06-01

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