EP1069226B1 - Aiguille de machine à coudre avec formation améliorée des boucles - Google Patents

Aiguille de machine à coudre avec formation améliorée des boucles Download PDF

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Publication number
EP1069226B1
EP1069226B1 EP00106095A EP00106095A EP1069226B1 EP 1069226 B1 EP1069226 B1 EP 1069226B1 EP 00106095 A EP00106095 A EP 00106095A EP 00106095 A EP00106095 A EP 00106095A EP 1069226 B1 EP1069226 B1 EP 1069226B1
Authority
EP
European Patent Office
Prior art keywords
needle
eye
thread
point
needle according
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.)
Expired - Lifetime
Application number
EP00106095A
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German (de)
English (en)
Other versions
EP1069226A1 (fr
Inventor
Hans-Kurt Wohnhas
Bernd Hillenbrand
Gerd Horn
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
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Filing date
Publication date
Application filed by Groz Beckert KG filed Critical Groz Beckert KG
Publication of EP1069226A1 publication Critical patent/EP1069226A1/fr
Application granted granted Critical
Publication of EP1069226B1 publication Critical patent/EP1069226B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B85/00—Needles

Definitions

  • the invention relates to a needle, in particular for mechanical penetration of a thread into sewing material.
  • a tufting needle for Known carpet making, which serves a staple fiber yarn to sting through a ground fabric and with the Staple fiber yarn to form loops.
  • the tufting needle has an approximately cylindrical shaft, the on an end is pointed. Near the top is formed obliquely to the needle central axis a funnel-shaped eye.
  • an air duct is provided with which the eye can be acted upon by compressed air.
  • the shaft is to the clamping side cylindrical and tapered towards the tip. The inclination of the eye to the longitudinal axis is about 30 °.
  • the looping is in this needle by the Effect of compressed air introduced into the eye. Other means for holding the thread loop are not seen.
  • Another tufting needle is known from EP 0187925. This is based on a tubular body, which is cut off obliquely to form a tip. At the opposite side of the slope is the tubular Base body also open, leaving a through the open interior running thread on the oblique arranged mouth surface of the tubular body can escape.
  • the eyelet thus formed has an oval Cross-section, due to a the tubular body The deformation along the eye changes.
  • On the open side of the tubular body opposite side is the tubular body flattened, so that formed a recess or groove is.
  • Another tufting needle is known from DE 2834738 C2 known.
  • This needle has a needle body with a flat Cross-section, resulting in one embodiment extends almost unchanged to an eye, the cross directed to the longitudinal axis of the needle and elongated oval is.
  • To the eye leads a gutter that considerably flatter than the thread.
  • the length of the eye is at this Embodiment about as large as the mouth of the eye at the two corresponding opposite one another Needle pages.
  • embodiment is a tufting needle with approximately spoon-shaped Head known.
  • the shaft extends a thread trough, their depth is less than the thread thickness and essential less than the eye width.
  • the eye is oval formed and extends across the tufting needle.
  • At the opposite side of the yarn channel is in Area of the eye and a subsequent shaft area a deflection provided.
  • From DE-OS 2412062 is also a sewing needle known to cooperate with a thread-gripper is set up.
  • the sewing needle serves to the upper thread to pierce through the fabric, with the forming Loop then held by a thread grab and enlarged becomes.
  • the sewing needle has a shaft with a thread groove whose depth is slightly greater than that smallest eye diameter, so that the thread. completely in the thread trough is running.
  • the eye extends to one arched path across the needle and widens thereby funnel-shaped.
  • the eye cross-section is set oval. Immediately following the eye is at the of facing away from the tip and the thread trough opposite Side a trough provided for the hook or gripper, who works with the needle.
  • the needle of the invention has a long, the thread good leading eye and one adjacent to the ⁇ hrausgang Bump for clamping the thread in the sewing material.
  • the eye is through a preferably straight passage formed at an acute angle to the needle longitudinal direction is inclined. This gives a low friction of the through the eye thread at the eye and a good Guiding the thread.
  • the needle according to the invention can therefore produce a loop which, when retracting the needle in its ideal way full training is maintained.
  • the use a gripper holding the sling is not required. This makes it possible, even threads in thicker Just stabbing textiles.
  • the height of the mats can be up to 40mm or more and does not have to be constant. This is, for example, in aircraft wings made of laminate material of the case.
  • the gripper is superfluous. This will the thread spared. It only runs the required amount of thread through the eye. In contrast, are at a Lockstitching process with each loop larger thread lengths through the eye to pull by means of a gripper Guide the formed loop around a bobbin case to be able to. The gripper therefore pulls a thread length through the eye, which then when tightening (knotting) of the Upper thread is withdrawn again. Running this way in the conventional sewing thread sections many times through the eye until it finally becomes part of the suture Come to rest.
  • the needle according to the invention allows avoidance such a thread load.
  • the needle according to the invention can be stable be formed. It is not a groove for a gripper required. Accordingly, the otherwise existing Cross-sectional weakening.
  • the needle according to claim 2 provides the same advantages.
  • the opening of the eye extends with a pointed Angle through the needle body and is therefore relatively long.
  • the circular cross section gives a good Thread guide and the thread is stabilized.
  • Needle for piercing thread in sewing material and looping which on the return stroke ideally full training is maintained, when the eye in a very acute angle aligned with the needle longitudinal direction is. If the input and the output of the Ears are axially offset from each other, leaving out Side view seen the entrance and the exit of the Do not overlap the needle (i.e., it leaves a positive one) Axial distance between the entrance and exit of the eye) the thread is a good guide and runs with less Friction through the eye. Thus, a thread take in the Needle return stroke avoided.
  • the eye is preferably cylindrical, which also serves the purpose mentioned.
  • the thread guide is also useful as long as possible ⁇ hrus, the Length L of the eye is preferably greater than the thickness of the Needle.
  • a leading to the eye groove on the shaft allows the thread guide and the almost frictionless retraction of the thread in the sewing material when the depth of the gutter approximately coincides with the eye diameter or larger as this one.
  • the thread trough can be a rectangular, have square or otherwise cross-section.
  • the eye is at its entrance at the of the thread trough bounded side preferably by an edge, the (slightly rounded and) on the outside of the needle is arranged.
  • the edge serves to guide the thread during the needle return stroke and causes an avoidance of friction between the thread and the sewing material. This will be a takeaway the thread through the needle during the return stroke avoided.
  • the acute angle with which the eye against the needle longitudinal direction is inclined is preferably smaller than 30 °. Better yet it is below 20 °, preferably below 15 °.
  • the distance set a value between the tip and the eye which is less than the length of the eye.
  • the comparatively large eye length results in a good thread guide and the comparatively small distance between tip and ⁇ hrausgang results in a large penetration depth of the thread. This is especially true if the distance between the Tip and the ⁇ hrausgang is less than half the ⁇ hrus.
  • the one provided in the vicinity of the exit of the eye Bump which is used to clamp the thread in or on the Material used, preferably has a height at About 80% of the diameter of the eye is. In this way if the thread in the needle hole is well held, without too much increase in friction. It results also, in comparison to a hollow needle a small Needle hole. This is, for example, for stapling or stabilizing Of carbon fiber mats advantage.
  • the hump it is considered advantageous to the hump to keep relatively short in the needle longitudinal direction, wherein it is preferably shorter than 80% of the length of the eye.
  • a rounded transition trained This can also be sensitive Threads are processed gently.
  • Kevlar threads can be inserted without damage.
  • a long straight, a substantially constant Cross-section having shank allows the piercing of threads also in thick layers of material.
  • the needle according to the invention several layers of material Grooving be fixed, the layers are not pierced Need to become.
  • the Needle 1 shows a needle 1 for piercing a thread 2 in sewing material 3 ( Figures 7 to 12) illustrated.
  • the Needle 1 has a shaft 4, which at one end in a Clamping part 5 and at its other, free end in one Head 6 passes.
  • the head 6 contains an eye 7 with the length L, whose details in particular from the figures 2 and 3 emerge.
  • the eye 7 is formed by a cylindrical bore 8, the bore center axis 9 at an acute angle from about 13 ° to the shaft longitudinal direction determining Longitudinal axis 11 of the needle 1 is.
  • the eye 7 and the bore 8 has an input 12 and an output 14 on.
  • the entrance 12 is in the longitudinal direction the needle 1 by a near-peak limitation or Edge 15 and a tip-distant boundary or edge 16 limited.
  • An extension the bore 8, which touches the edge 15, results in the Needle side 36 an imaginary point of intersection 35. The distance between this intersection 35 and the bottom 28 of the needle groove 27 is larger than the bore diameter.
  • the output 14 is by a near-edge 17 and a tip-distant edge 18 limited.
  • the entrance 12 and the output 14 are with respect to the axial direction of the Needle 1 spaced apart, i. between the edge 15 and the edge 18 is a positive distance exists.
  • the input 12 and the output 14 overlap each other not, i. they are in axially different places arranged.
  • the needle 1 Approximately in the area of the opening 14 begins the Head 6 of the needle 1 to a tip 21 to taper.
  • the needle In near the tip 21, the needle 1, as Figure 4 illustrates, a circular cross section.
  • the Tip 21 sets the position of the longitudinal central axis 11th firmly. With respect to this, the tip-side edge 17 is located the output 14 on a different side than the off-peak Edge 16 of the entrance 12.
  • the bore 8 extends completely from one side of the longitudinal central axis 11 the other.
  • the bore 8 has a circular cross-section on and is cylindrical.
  • the distance between the near-to-the-point Edge 17 of the output 14 and the tip 21 is preferably at most as large as the needle size and thus significantly shorter than the length of the bore. 8
  • the bore 8 goes to its tip distal edge 18th with a rounding into a hump 22 across, extending from a defined by the shaft 4 back 23 extends away.
  • the height of the hump 22 is preferably too about 80% of the diameter of the bore 8 set.
  • the bump 22 preferably has a short straight Section 24, with a rounding in against the Longitudinal axis 11 inclined portion 25 passes, the at the eye 7 connects. At the remote from the eye 7 Side passes over the section 24 in an area 26, the is inclined towards the longitudinal central axis 11. The transitions are each rounded.
  • a yarn channel 27 formed, extending from the chuck 5 to extends to the entrance 12 of the eye 7.
  • the thread groove 27 has, as shown in Figure 6, an approximately square Cross-section on.
  • the thread groove 27 is almost enough to the longitudinal central axis 11 of the shaft 4, by the way also preferably a substantially square Cross section has. Only in the area of the hump 22, the cross section is approximately rectangular, wherein the corners, i. the longitudinal edges of the shaft 4 throughout rounded.
  • FIGS. 7 to 9 the piercing of the thread 2 is shown illustrated by the fabric 3 in different stages of work.
  • FIG. 7 shows the sewing material 3, for example. through several layers of superimposed mats, For example. Carbon fiber mats, may be formed, with a ready trained loop 31.
  • the needle 1 is longitudinal of the fabric 3 one step further and is now in the direction indicated by an arrow 32 on the Sewing material 3 to move. With the tip 21, the needle 1 opens a stitch hole and pierces the fabric 3.
  • the thread lying on the fabric 3 2a are fixed by a holder 33.
  • the needle 1 pulls on the downstroke with her eye 7 by means of the rounded Edge 18 the thread 2 through the opened stitch hole, wherein the thread 2 runs friction in the thread groove 27.
  • the bump 22 fixes the thread 2 on the fabric and prevents already lying on the fabric 3, piercing Thread 2a is tightened.
  • a needle for piercing or piercing a thread 2 in or through fabric 3 has a preferably cylindrical, tilted flat against the needle longitudinal direction long eye on, at the thread exit side a hump is adjacent. This serves to clamp one in sewing material pierced thread in the stitch hole.
  • a needle 1 With such a construction allows a good low friction Guide the thread 2, allowing looping without additional Gripper is possible.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)

Claims (21)

  1. Aiguille (1), en particulier pour le piquage à la machine d'un fil (2) dans un produit à coudre (3),
    avec un corps d'aiguille qui comprend une tige (4) allongée avec une pointe (21) pourvue d'un chât (7), qui s'étend sous un angle aigu par rapport à la direction longitudinale (11) de la tige, le chât (7) comportant une entrée (12) et une sortie (14) qui présentent respectivement un bord (15, 17) proche de la pointe et un bord (16, 18) éloigné de la pointe et sont disposées sur des faces mutuellement opposées de la tige (4), de manière telle qu'il subsiste une distance positive entre le bord (15) de l'entrée (12) proche de la pointe et le bord (18) de la sortie (14) éloigné de la pointe et
    avec une bosse (22) aménagée sur le corps d'aiguille, dans le voisinage de la sortie (14) du chât (7), qui s'étend latéralement à partir de la tige (4).
  2. Aiguille (1), en particulier pour le piquage à la machine d'un fil (2) dans un produit à coudre (3),
    avec un corps d'aiguille qui comprend une tige (4) allongée avec une pointe (21) pourvue d'un chât (7) qui s'étend sous un angle aigu par rapport à la direction longitudinale (11) de la tige, le chât (7) présentant une section transversale circulaire et
    avec une bosse (22) aménagée sur le corps d'aiguille, dans le voisinage de la sortie (14) du chât (7), qui s'étend latéralement à partir de la tige (4).
  3. Aiguille selon la revendication 2, caractérisée en ce que le chât (7) comporte une entrée (12) et une sortie (14), qui présentent respectivement un bord (15, 17) proche de la pointe et un bord (16, 18) éloigné de la pointe et sont disposées sur des faces de la tige (4) mutuellement opposées, et en ce qu'il subsiste une distance positive entre le bord (15) de l'entrée (12) proche de la pointe et le bord (18) de la sortie (14) éloigné de la pointe
  4. Aiguille selon la revendication 1 ou 2, caractérisée en ce que le chât (7) est cylindrique.
  5. Aiguille selon la revendication 1 ou 2, caractérisée en ce que le chât (7) a une longueur (L) qui est supérieure à l'épaisseur de l'aiguille.
  6. Aiguille selon la revendication 1 ou 2, caractérisée en ce que l'aiguille (1) présente, dans sa tige (4), un sillon à fil (27) qui mène au chât (7), le sillon (27) s'étendant parallèlement à la direction longitudinale (11) de l'aiguille.
  7. Aiguille selon la revendication 6, caractérisée en ce que le sillon à fil (27) présente une profondeur qui correspond essentiellement au diamètre du chât (7).
  8. Aiguille selon la revendication 6, caractérisée en ce que le sillon à fil (27) présente une section transversale essentiellement rectangulaire, de préférence une section transversale carrée.
  9. Aiguille selon la revendication 1 ou 2, caractérisée en ce que le bord (15) délimitant le chât (7) au niveau de son entrée (12) côté pointe (21) est disposé sur la face extérieure de l'aiguille.
  10. Aiguille selon la revendication 9, caractérisée en ce qu'un prolongement imaginaire, contigu au bord (15), d'un trou (8) formant le chât définit un point d'intersection (35) avec une face d'aiguille (36) dans laquelle est aménagé un sillon à fil (27), la distance entre le point d'intersection (35) et le fond (28) du sillon à fil (27) étant supérieure au diamètre du trou (8).
  11. Aiguille selon la revendication 1 ou 2, caractérisée en ce que l'angle aigu entre un axe médian (9) du trou du chât (7) et l'axe médian longitudinal (11) est inférieur à 30°.
  12. Aiguille selon la revendication 1 ou 2, caractérisée en ce que l'angle aigu entre un axe médian (9) du trou du chât (7) et l'axe médian longitudinal (11) est inférieur à 20°.
  13. Aiguille selon la revendication 1 ou 2, caractérisée en ce que l'angle aigu entre un axe médian (9) du trou du chât (7) et l'axe médian longitudinal (11) est inférieur à 15°.
  14. Aiguille selon la revendication 1 ou 2, caractérisée en ce qu'entre la pointe (21) et le chât (7) est fixée une distance qui est inférieure à la longueur du chât (7).
  15. Aiguille selon la revendication 1 ou 2, caractérisée en ce qu'une distance inférieure à la demi-longueur du chât (7) et/ou inférieure à l'épaisseur de l'aiguille est fixée entre la pointe (21) et le chât (7).
  16. Aiguille selon la revendication 1 ou 2, caractérisée en ce que l'entrée (12) du chât (7), par rapport à une ligne qui s'étend dans la direction longitudinale de l'aiguille (1) et passe par la pointe (21) (axe médian longitudinal 11) est entièrement disposée sur une face différente de la sortie (14) du chât.
  17. Aiguille selon la revendication 1 ou 2, caractérisée en ce que la bosse (22) présente une hauteur mesurée transversalement à la direction longitudinale (axe médian longitudinal 11) de l'aiguille (1) qui est de préférence inférieure à 80% du diamètre du chât (7).
  18. Aiguille selon la revendication 1 ou 2, caractérisée en ce que la bosse (22) présente une hauteur mesurée transversalement à la direction longitudinale (axe médian longitudinal 11) de l'aiguille (1) qui est de préférence inférieure à 80% de la longueur du chât (7).
  19. Aiguille selon la revendication 1 ou 2, caractérisée en ce qu'un raccordement arrondi est aménagé entre la bosse (22) et le chât (7).
  20. Aiguille selon la revendication 1 ou 2, caractérisée en ce que la tige (4) est rectiligne et, à la suite de la bosse (22), présente un tronçon à section constante, dont la longueur correspond à un multiple de la longueur du chât.
  21. Aiguille selon la revendication 1 ou 2, caractérisée en ce que la tige (4) présente une section rectangulaire, de préférence carrée.
EP00106095A 1999-07-10 2000-03-30 Aiguille de machine à coudre avec formation améliorée des boucles Expired - Lifetime EP1069226B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19932288A DE19932288C2 (de) 1999-07-10 1999-07-10 Nähmaschinennadel mit verbesserter Schlingenbildung
DE19932288 1999-07-10

Publications (2)

Publication Number Publication Date
EP1069226A1 EP1069226A1 (fr) 2001-01-17
EP1069226B1 true EP1069226B1 (fr) 2003-05-21

Family

ID=7914330

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00106095A Expired - Lifetime EP1069226B1 (fr) 1999-07-10 2000-03-30 Aiguille de machine à coudre avec formation améliorée des boucles

Country Status (4)

Country Link
US (1) US6332416B1 (fr)
EP (1) EP1069226B1 (fr)
DE (2) DE19932288C2 (fr)
ES (1) ES2199717T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10008447C2 (de) * 2000-02-23 2002-07-25 Groz Beckert Kg Nähnadel zum multidirektionalen Nähen
JP4043319B2 (ja) * 2002-08-23 2008-02-06 オルガン針株式会社 ミシン針
JP2004141468A (ja) * 2002-10-25 2004-05-20 Organ Needle Co Ltd ミシン針
IL163209A (en) * 2004-07-26 2009-08-03 Yair Eilam A sewing machine needle for sewing with a complex thread

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3523510A (en) * 1969-03-20 1970-08-11 Bigelow Sanford Inc Tufting needle
DE2412062A1 (de) * 1973-03-13 1974-10-10 Manta Fa Naehnadel
DE2834738C2 (de) * 1977-08-10 1984-07-12 Wool Research Organisation of New Zealand (Inc.), Lincoln, Canterbury Nadel für Tuftingmaschinen
DE7923552U1 (de) * 1979-01-25 1980-01-24 Wool Research Organisation Of New Zealand Inc., Canterbury (Neuseeland) Nadel fuer tufting-, naeh-, heftmaschinen u.dgl.
US4458614A (en) * 1982-01-08 1984-07-10 Organ Needle Co. Ltd. Sewing machine needle
NZ201452A (en) * 1982-08-02 1985-12-13 Wool Res Organisation Tufting machine needle
JPS6018774U (ja) * 1983-07-14 1985-02-08 蛇の目ミシン工業株式会社 ミシン針の構造
DE8436630U1 (de) * 1984-12-14 1986-05-28 Fa. Jos. Zimmermann, 5100 Aachen Maschinennadel, insbesondere Tuftingnadel
AU1686692A (en) * 1991-05-10 1992-12-30 Organ Needle Co., Ltd. Sewing machine needle and method of manufacturing same

Also Published As

Publication number Publication date
DE50002240D1 (de) 2003-06-26
DE19932288C2 (de) 2001-11-29
ES2199717T3 (es) 2004-03-01
EP1069226A1 (fr) 2001-01-17
DE19932288A1 (de) 2001-01-25
US6332416B1 (en) 2001-12-25

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