EP1069226B1 - Nähmaschinennadel mit verbesserter Schlingenbildung - Google Patents
Nähmaschinennadel mit verbesserter Schlingenbildung Download PDFInfo
- 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
Links
Images
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.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Description
- 1
- Nadel
- 2,2a
- Faden
- 3
- Nähgut
- 4
- Schaft
- 5
- Einspannteil
- 6
- Kopf
- 7
- Öhr
- 8
- Bohrung
- 9
- Bohrungsmittelachse
- 11
- Längsmittelachse
- 12
- Eingang
- 14
- Ausgang
- 15
- spitzennahe Kante d. Eingangs
- 16
- spitzenferne Kante d. Eingangs
- 17
- spitzennahe Kante des Ausgangs
- 18
- spitzenferne Kante des Ausgangs
- 21
- Spitze
- 22
- Höcker
- 23
- Rücken
- 24
- Abschnitt
- 25
- Bereich
- 26
- Bereich
- 27
- Fadenrinne
- 28
- Boden
- 31
- Schlinge
- 32
- Pfeil
- 33
- Halter
- 34
- Pfeil
- 35
- Schnittpunkt
- 36
- Nadelseite
- L
- Länge
Claims (21)
- Nadel (1), insbesondere zum maschinellen Einstechen eines Fadens (2) in Nähgut (3),mit einem Nadelkörper, zu dem ein länglicher Schaft (4) mit einer Spitze (21) gehört, der ein Öhr (7) aufweist, das sich mit einem spitzen Winkel zur Schaftlängsrichtung (11) geneigt durch diesen erstreckt, wobei das Öhr (7) einen Eingang (12) und einen Ausgang (14) aufweist, die jeweils eine spitzennahe Begrenzung (15, 17) und eine spitzenferne Begrenzung (16, 18) aufweisen und die auf einander gegenüberliegenden Seiten des Schafts (4) derart angeordnet sind, dass zwischen der spitzennahen Begrenzung (15) des Eingangs (12) und der spitzenfernen Begrenzung (18) des Ausgangs (14) ein positiver Abstand verbleibt, undmit einem an dem Nadelkörper in Nachbarschaft des Ausgangs (14) des Öhrs (7) ausgebildeten Höcker (22), der sich seitlich von dem Schaft (4) weg erstreckt.
- Nadel (1), insbesondere zum maschinellen Einstechen eines Fadens (2) in Nähgut (3),mit einem Nadelkörper, zu dem ein länglicher Schaft (4) mit einer Spitze (21) gehört, der ein Öhr (7) aufweist, das sich zur Schaftlängsrichtung (11) mit einem spitzen Winkel geneigt durch diesen erstreckt, wobei das Öhr (7) einen kreisförmigen Querschnitt aufweist, undmit einem an dem Nadelkörper in Nachbarschaft des Ausgangs (14) des Öhrs (7) ausgebildeten Höcker (22), der sich seitlich von dem Schaft (4) weg erstreckt.
- Nadel nach Anspruch 2, dadurch gekennzeichnet, dass das Öhr (7) einen Eingang (12) und einen Ausgang (14) aufweist, die jeweils eine spitzennahe Begrenzung (15, 17) und eine spitzenferne Begrenzung (16, 18) aufweisen und die auf einander gegenüberliegenden Seiten des Schafts (4) derart angeordnet sind, dass zwischen der spitzennahen Begrenzung (15) des Eingangs (12) und der spitzenfernen Begrenzung (18) des Ausgangs (14) ein positiver Abstand verbleibt.
- Nadel nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Öhr (7) zylindrisch ausgebildet ist.
- Nadel nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Öhr eine Länge (L) aufweist, die größer ist als die Dicke der Nadel.
- Nadel nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Nadel (1) an ihrem Schaft (4) eine zu dem Öhr (7) führende Fadenrinne (27) aufweist, wobei sich die Rinne (27) parallel zu der Nadellängsrichtung (11) erstreckt.
- Nadel nach Anspruch 6, dadurch gekennzeichnet, dass die Fadenrinne (27) eine Tiefe aufweist, die im wesentlichen mit dem Durchmesser des Öhrs (7) übereinstimmt.
- Nadel nach Anspruch 6, dadurch gekennzeichnet, dass die Fadenrinne (27) einen im wesentlichen rechteckigen, vorzugsweise einen quadratischen Querschnitt aufweist.
- Nadel nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die das Öhr (7) an seinem Eingang (12) zu der Spitze (21) hin begrenzende Kante (15) an der Nadelaußenseite angeordnet ist.
- Nadel nach Anspruch 9, dadurch gekennzeichnet, dass eine gedachte, die Kante (15) berührende Verlängerung einer Bohrung (8), die das Öhr (7) bildet, mit einer Nadelseite (36), in der eine Nadelrinne (27) vorgesehen ist, einen Schnittpunkt (35) ergibt, wobei der Abstand zwischen diesem Schnittpunkt (35) und dem Boden (28) der Nadelrinne (27) größer ist als der Durchmesser der Bohrung (8).
- Nadel nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der spitze Winkel zwischen einer Bohrungsmittelachse (9) des Öhrs (7) und der Längsmittelachse (11) kleiner als 30° ist.
- Nadel nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der spitze Winkel zwischen einer Bohrungsmittelachse (9) des Öhrs (7) und der Längsmittelachse (11) kleiner als 20° ist.
- Nadel nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der spitze Winkel zwischen einer Bohrungsmittelachse (9) des Öhrs (7) und der Längsmittelachse (11) kleiner als 15° ist.
- Nadel nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass zwischen der Spitze (21) und dem Öhr (7) ein Abstand festgelegt ist, der geringer ist als die Länge des Öhrs (7).
- Nadel nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass zwischen der Spitze (21) und dem Öhr (7) ein Abstand festgelegt ist, der geringer als die halbe Länge des Öhrs (7) und/oder kleiner als die Nadelstärke ist.
- Nadel nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Öhr (7) mit seinem Eingang (12) bezüglich einer sich in Längsrichtung der Nadel (1) erstreckenden, durch die Spitze (21) gehenden Linie (Längsmittelachse 11) vollständig auf einer anderen Seite angeordnet ist als mit seinem Ausgang (14).
- Nadel nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Höcker (22) eine quer zu der Längsrichtung (Längsmittelachse 11) der Nadel (1) zu messende Höhe aufweist, die vorzugsweise weniger als 80% des Durchmessers des Öhrs (7) beträgt.
- Nadel nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Höcker (22) eine längs zu der Längsrichtung (Längsmittelachse 11) der Nadel (1) zu messende Länge aufweist, die vorzugsweise weniger als 80% der Länge des Öhrs (7) beträgt.
- Nadel nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass zwischen dem Höcker (22) und dem Öhr (7) ein verrundeter Übergang ausgebildet ist.
- Nadel nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Schaft (4) gerade ausgebildet ist und im Anschluss an den Höcker (22) eine Länge mit konstantem Querschnitt aufweist, die ein Mehrfaches der Öhrlänge beträgt.
- Nadel nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Schaft (4) einen rechteckigen, vorzugsweise einen quadratischen Querschnitt aufweist.
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 (de) | 2001-01-17 |
EP1069226B1 true EP1069226B1 (de) | 2003-05-21 |
Family
ID=7914330
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00106095A Expired - Lifetime EP1069226B1 (de) | 1999-07-10 | 2000-03-30 | Nähmaschinennadel mit verbesserter Schlingenbildung |
Country Status (4)
Country | Link |
---|---|
US (1) | US6332416B1 (de) |
EP (1) | EP1069226B1 (de) |
DE (2) | DE19932288C2 (de) |
ES (1) | ES2199717T3 (de) |
Families Citing this family (4)
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)
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 |
WO1992020851A1 (fr) * | 1991-05-10 | 1992-11-26 | Organ Needle Co., Ltd. | Aiguille de machine a coudre et procede pour sa fabrication |
-
1999
- 1999-07-10 DE DE19932288A patent/DE19932288C2/de not_active Expired - Fee Related
-
2000
- 2000-03-30 ES ES00106095T patent/ES2199717T3/es not_active Expired - Lifetime
- 2000-03-30 EP EP00106095A patent/EP1069226B1/de not_active Expired - Lifetime
- 2000-03-30 DE DE50002240T patent/DE50002240D1/de not_active Expired - Lifetime
- 2000-07-10 US US09/613,506 patent/US6332416B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE19932288C2 (de) | 2001-11-29 |
DE19932288A1 (de) | 2001-01-25 |
ES2199717T3 (es) | 2004-03-01 |
EP1069226A1 (de) | 2001-01-17 |
DE50002240D1 (de) | 2003-06-26 |
US6332416B1 (en) | 2001-12-25 |
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