EP2896732B1 - Aiguille à coudre avec double nervurage - Google Patents

Aiguille à coudre avec double nervurage Download PDF

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Publication number
EP2896732B1
EP2896732B1 EP14151978.5A EP14151978A EP2896732B1 EP 2896732 B1 EP2896732 B1 EP 2896732B1 EP 14151978 A EP14151978 A EP 14151978A EP 2896732 B1 EP2896732 B1 EP 2896732B1
Authority
EP
European Patent Office
Prior art keywords
needle
sewing
thread groove
eye
thread
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
EP14151978.5A
Other languages
German (de)
English (en)
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EP2896732A1 (fr
Inventor
Dirk Bach
Kai-Uwe Haug
Alexander Merks
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
Priority to EP14151978.5A priority Critical patent/EP2896732B1/fr
Application filed by Groz Beckert KG filed Critical Groz Beckert KG
Priority to PL14151978.5T priority patent/PL2896732T3/pl
Priority to PCT/EP2015/050898 priority patent/WO2015110386A1/fr
Priority to KR1020167019019A priority patent/KR102288010B1/ko
Priority to BR112016014821-5A priority patent/BR112016014821B1/pt
Priority to JP2016547893A priority patent/JP6811092B2/ja
Priority to US15/113,350 priority patent/US9758911B2/en
Priority to MX2016009478A priority patent/MX358855B/es
Priority to CN201580005205.1A priority patent/CN105899721B/zh
Publication of EP2896732A1 publication Critical patent/EP2896732A1/fr
Application granted granted Critical
Publication of EP2896732B1 publication Critical patent/EP2896732B1/fr
Priority to ZA2016/03998A priority patent/ZA201603998B/en
Priority to HK16114490A priority patent/HK1226109A1/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B85/00—Needles
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B85/00—Needles
    • D05B85/02—Needles with slotted eyes, i.e. with a slit leading to the eye for thread insertion

Definitions

  • the invention relates to a sewing needle for a sewing machine, which can thus also be referred to as Maschinennähnadel.
  • the sewing needle has a needle body having at one end a holding portion for clamping the sewing needle in a corresponding holding device of the sewing machine.
  • On the opposite side of the holding portion of the needle body has a working portion which terminates in the needle point.
  • a Nadelheim is arranged, which completely penetrates the needle body and passes through the sewing of the upper thread through.
  • Sewing needles are often made using a stamping process.
  • a depression which is called a tip groove, often arises.
  • This top trough is also at EP 1 127 973 B1 present and made deeper against the two sidewalls of the eye of the needle, so that the sewing thread slides over a fluke or edge between the tip groove and the side wall of the needle eye upon a change of the sewing direction. This can lead to a twist displacement of the sewing thread.
  • Out EP 1 127 973 B1 is a sewing needle for multidirectional sewing known.
  • the sewing needle has an elongated eye of the needle, which passes through the needle body and is bounded by two opposite side walls.
  • the needle body extends along a longitudinal axis.
  • the two side walls are curved concavely viewed at their side wall edges in the direction of the longitudinal axis. If the thread emerges obliquely or laterally from the eye of the needle, it will guided over one of the two concave lowered side walls of the needle eye. By this measure a swirl displacement of the suture should be avoided.
  • the twist of the suture should only slightly or not be changed when running the thread on the side wall, thereby avoiding sewing errors and a thread conservation should be achieved.
  • DE 10 2009 004 033 A1 describes a sewing needle for a sewing machine, which has a groove extending in the direction of the longitudinal axis in the needle body on the needle tip opposite side, which opens into the needle eye. At a point in front of the mouth of the groove in the eye of the needle, this has a relative to the longitudinal axis of the needle body angled section. By this angled groove, the pressing force acting on the sewing thread in the area of the needle eye, in the direction of the impact of the suture to be oriented in order to achieve unthreading of the suture.
  • a tufting needle wherein the needle tip is offset in the transport direction of the backing with respect to the needle axis. This is to avoid that when piercing the backing of the previously deposited thread is pierced due to vibrations of the tufting needle and thus damaged.
  • the tufting needle may also have a thread groove which extends obliquely from the needle eye obliquely to the longitudinal axis of the needle and ends above the needle point. This is intended to deflect the thread from the longitudinal axis of the needle where the needle point is located.
  • a described needle is specially designed for use in sewing a shoe.
  • the needle is designed without a needle eye and has in the needle body in a working area a recess, whereby a hook-like projection is formed.
  • the needle is stung through the fabric. With this projection, a thread loop can be taken similar to crocheting, pulled through the fabric and a thread loop on the other side of the fabric.
  • This needle is thus specially designed to execute a stitch type 101 according to DIN 61400: 2002-04.
  • the sewing needle has a needle body extending along a longitudinal axis with a holding portion and a working portion.
  • the holding portion and the working portion are provided at opposite end portions of the needle body.
  • the holding section is used for clamping the sewing needle in a corresponding holding or clamping device of the sewing machine.
  • the needle body tapers towards the point of the needle.
  • There is also a needle eye in the working section which completely penetrates the needle body from a front side to a back side of the needle body in a transverse direction and through which the upper thread is passed for sewing.
  • the bottleneck is bounded by two sidewalls facing each other in a lateral direction which is oriented perpendicular to the longitudinal axis and to the transverse direction.
  • a yarn channel is introduced into the front side of the needle body between the needle eye and the needle tip.
  • the thread groove forms a Cord michmaschine.
  • the thread groove is located between the needle eye and the needle tip and has two thread groove mouths, which are arranged on different sides of a first longitudinal center plane through the needle body.
  • the thread groove or the cordation formed thereby is arranged symmetrically with respect to this first longitudinal center plane through the needle body.
  • the first longitudinal center plane extends along the longitudinal axis of the needle body and in the transverse direction.
  • the transverse direction is aligned at right angles to the longitudinal axis.
  • the thread channel mouths form transition points at which the inner surface of the yarn channel adjoins the outer contour surface of the needle body.
  • the yarn channel opens at a distance from the two yarn channel openings at a lower edge of the needle eye in the Nadelschreib.
  • the thread runs during the sewing process from the sewing material through one of the two thread groove openings into the thread groove and finally through the eye of the needle, at least when the sewing needle is located above the sewing material.
  • the thread is pulled out of the thread groove and in the Nadelschreib of the needle tip and the thread groove away.
  • the position of the thread groove can ensure that the thread remains within the thread groove at least during the largest part of the needle stroke movement - and at least when the sewing needle has a distance from the sewing material and / or during the material transport.
  • Through the yarn channel is a twisting or Entzwirnen the thread and thus a twist displacement avoided.
  • the side walls delimiting the needle eye on the sewing needle body can be dimensioned sufficiently large in the transverse direction in order to ensure the stability of the sewing needle in the region of the needle eye.
  • the sewing thread is pushed out of the thread groove on the side wall of the Nadelheims when piercing the material.
  • this phase of the sewing process has little effect on the twist displacement of the thread, so that correspondingly enlarged side walls can be provided for stabilizing the sewing needle without significant negative thread influence.
  • the thread groove is present.
  • the distance between the two yarn channel openings in a side direction perpendicular to the first longitudinal center plane at least at some and preferably at all points greater than the width of the yarn channel in the lateral direction at the immediately adjacent to the needle eye point. It is possible, for example, that a dimension of the yarn groove in the lateral direction at least partially increases with increasing distance from the needle eye.
  • the dimension of the yarn channel in the lateral direction S corresponds in each case to the largest possible dimension.
  • the thread groove mouths are located on different sides with respect to the first longitudinal center plane.
  • the thread groove may preferably be formed symmetrically with respect to the first longitudinal center plane. This makes it possible to reverse the direction of transport of the sewing material or the sewing direction and to achieve the desired yarn protection in at least two directions.
  • the weakening of the needle body in a region between the needle eye and the needle tip through the thread groove with the two thread channel mouths can be accepted. It has demonstrated that this will not cause any negative vibration and stability impairments of the sewing needle. On the contrary, by strengthening the needle body on the two side walls of the eye of the needle, an overall much more stable sewing needle is achieved and no or at most insignificant twist displacement of the thread is permitted.
  • the thread groove has, following the needle eye, a channel section which extends in particular in the direction of the longitudinal axis.
  • This channel section opens into the eye of the needle at the lower edge of the needle eye, which represents the edge of the needle eye closest to the needle tip.
  • the gutter section can preferably be delimited on both sides of the first longitudinal center plane by a respective side wall region of a side wall delimiting the needle eye.
  • the side walls delimiting the eye of the needle accordingly each have a side wall region which continues along the groove section and delimits it in the lateral direction.
  • the width of this channel section in the lateral direction can be constant or, starting at the bottleneck, become larger, at least in sections, as the distance from the eye of the needle increases.
  • the yarn channel and thus also the gutter section has a channel bottom or channel bottom.
  • This channel bottom can be formed by a connecting line of the vertices of the cross-sectional profiles of the thread groove or the channel section.
  • the channel bottom of the channel section is inclined in the direction of the longitudinal axis of the needle body. In particular, the distance of the channel bottom of the channel section decreases along the longitudinal axis of the needle eye in the direction of the needle tip down.
  • the distance of the channel bottom of the thread groove from a second longitudinal center plane at any point is greater than immediately adjacent to the bottleneck.
  • the second longitudinal center plane is aligned at right angles to the first longitudinal center plane and extends along the longitudinal axis and in the lateral direction.
  • the needle body is preferably made in one piece from a uniform material without seam and joint. It may for example be made of an at least partially cylindrical output element made of metal by an embossing process.
  • the thread groove preferably has two end sections, which, on the one hand, adjoin the channel section and each have a thread groove mouth. Each end section is in particular stepped and / or edged into the gutter section.
  • the two end portions are arranged in a preferred embodiment on opposite sides of the first longitudinal center plane. Along the first longitudinal median plane, the two end sections can be separated from one another by a protrusion.
  • the survey is preferably edge and / or continuously in the two end portions of the yarn channel over. The inner surfaces of the end portions thus go into the surface of the survey without the formation of a step or edge. This allows a thread gently from the one end portion slide over the survey in the other end portion when the transport direction of the sewing material or the sewing direction changes.
  • the survey is preferably convex and arranged symmetrically to the first longitudinal center plane. In particular, a vertex of the convex curvature of the survey can be arranged on the longitudinal center plane.
  • the end portions of the thread groove open in a tapered region of the work section.
  • the end sections of the thread groove adjoin the outer contour surface of the needle body in the area tapering towards the needle tip at their respective end opposite the channel section.
  • the channel section may also be arranged at least partially in the region of the working section of the needle body which tapers towards the needle tip.
  • the channel section has a width in the lateral direction that is greater than the width of the end sections.
  • the width of the end sections of the thread groove is measured transversely to the thread groove running direction or to the thread guiding direction.
  • the thread guide direction or thread groove course direction of the two end sections is aligned obliquely to the first longitudinal center plane.
  • the width of the end portions or the gutter portion is measured in each case at the widest point, for example at the point at which the gutter portion or the respective end portion adjoins the outer contour surface of the needle body.
  • the two end sections of the thread groove or the entire thread groove run through the needle body only on one side of a second longitudinal center plane.
  • the two arranged on opposite sides of the first longitudinal center plane and The side walls bounding the eye of the needle each adjoin the outside core surface of the needle body at a side wall edge.
  • the side wall edge has, at least in sections, a greater distance from the second longitudinal center plane than the point furthest from the second longitudinal center plane and / or the furthest point of the two yarn channel openings.
  • This side wall edge has at least one section which runs parallel to the longitudinal axis of the needle body and / or is convexly curved in the direction of the longitudinal axis and in particular does not have a concavely curved course in the direction of the longitudinal axis.
  • the needle body in the direction of its longitudinal axis adjacent the Nadelheim a gripper recess.
  • the gripper recess is preferably formed symmetrically to the first longitudinal center plane.
  • the gripper recess is arranged with respect to the second longitudinal center plane on the thread groove openings of the two end portions in the needle eye opposite side.
  • the sewing needle 20 has a needle body 21 extending along a longitudinal axis L.
  • the needle body 21 is made in one piece from a uniform material without seams and joints. It is preferably made of metal or a metal alloy.
  • the needle body 21 at one end portion has a holding portion 22 which is cylindrical, for example.
  • the holding section 22 serves to clamp the sewing needle 20 in a clamping device of the sewing machine.
  • the needle body 21 has a working section 23.
  • the working section 23 can, as in FIG. 1 can be connected via a shaft portion 26 with the holding portion 22.
  • the needle body 21 is, for example, at least partially cylindrical and may expand towards the retaining section 22.
  • first longitudinal center plane M1 In the longitudinal axis L intersect a first longitudinal center plane M1 and a second longitudinal center plane M2, which are aligned at right angles to each other.
  • the first longitudinal center plane M1 is stretched by the longitudinal axis L and a transverse direction Q.
  • the second longitudinal center plane M2 is spanned by the longitudinal axis L and a lateral direction S.
  • the lateral direction S and the transverse direction Q are oriented at right angles to each other.
  • the needle body 21 has a needle eye 30.
  • the needle eye 30 passes through the needle body 21 in the transverse direction Q completely.
  • an upper thread for sewing in the transverse direction Q can be threaded through the needle eye 30 become.
  • the needle eye 30 has in the direction of the longitudinal axis L a larger dimension than in the lateral direction S. It arises, so to speak, a kind of slot.
  • the needle eye 30 is bounded in the lateral direction S by two opposing side walls 31.
  • the side walls 31 extend according to example at least in sections in a plane parallel to the longitudinal axis L and the transverse direction Q.
  • Each side wall 31 has on a front side 32 of the needle body 21, a first side wall edge 33 and on one of the front 32 in the transverse direction Q opposite back 34 of the needle body 21 a second side wall edge 35.
  • the two side wall edges 33, 35 extend substantially parallel to the longitudinal axis L or convexly arched away from the second longitudinal center plane M2, at least in the region of the needle eye 30 in which the needle eye 30 in the transverse direction Q has a continuous, free space profile 36 ( FIGS. 4 and 18 ).
  • the two side walls 31 delimiting the needle eye 30 are connected to each other at the needle tip 25 side by a lower transverse surface 40 and on the opposite side by an upper transverse surface 41.
  • the clearance space 36 is thus limited by the two transverse surfaces 40, 41 and the two side walls 31.
  • the transverse surfaces 40, 41 are curved in plan view of the Nadelschreib 30, so seen in the transverse direction Q ( Figures 3 and 17 ).
  • the transverse surfaces 40, 41 may have a curved course at least in sections in each sectional plane which is arranged parallel to the first longitudinal center plane M1 ( FIGS. 4 and 18 ).
  • a thread groove 39 is introduced into the front side 32 of the needle body 21.
  • the thread groove is arranged symmetrically in the embodiments shown here with respect to the first longitudinal center plane M1.
  • the thread trough 39 has adjacent to the Nadelschreib 30 a channel portion 39 a.
  • the gutter section 39a merges into the needle eye 30 on the lower side of the needle eye 30 assigned to the tip 25. In other words, the channel section 39a forms a lower edge 45 with the lower transverse surface 40.
  • the thread groove 39 also has two thread groove openings 42, 43.
  • the thread groove 39 is inserted into the needle body 21 opposite an envelope or outer contour surface A of the working section 23 of the needle 20 and opens at one end into the needle eye 30 and at a distance to the two thread troughs 42, 43 in the outer contour surface A.
  • the through the Thread channel formed Cordmaschine can be referred to as Doppelcordsammlung because of the two Fadenrinnenmünditch 42, 43.
  • the outer contour surface A of the needle body 21 is predetermined in the working section 23 by the enveloping contour. This contour describes an area that the working section 23 would have if the needle eye 30 and the thread groove 39 were not present.
  • the outer contour surface A is in the Figures 2 . 16 and 18 only shown schematically.
  • edge in the present development is to be understood as meaning not a sharp, angled edge. Rather, the edges, for example, the lower edge 45 or the side wall edges 33, 35 rounded or provided with a radius to form no sharp edges on the needle body 21, which damage the thread could.
  • the working section 23 of the needle body 21 is cut along the first longitudinal center plane M1.
  • the thread groove 39 has there a crest line which extends along the course direction of the thread groove 39 and the thread guide direction and forms a channel bottom 46.
  • the apex line extends from the lower edge 45 along the first longitudinal center plane M1.
  • the channel bottom 46 extends inclined in the region of the channel section 39a with respect to the second longitudinal center plane M2. The distance of the channel bottom 46 from the longitudinal axis L or from the second longitudinal center plane M2 decreases in the region of the channel section 39a in the direction of the longitudinal axis L starting from the needle eye 30 and the lower edge 45 to the needle tip 25 from.
  • the channel bottom 46 in the lateral direction S preferably just along the entire yarn channel 39.
  • Each of the two side walls 31 has a side wall region 47 following the clearance 36.
  • the two side wall portions 47 delimit the channel portion 39a following the lower edge 45 in the lateral direction S.
  • the side wall portion 47 for example edge and infinitely into the adjacently arranged to the clearance 36 of the needle eye 30 portion of the side wall 31 via.
  • the upper side wall edge 33 continues in the side wall region 47 in an edge section 48, which approaches the second longitudinal center plane M2 as the distance to the needle point 25 decreases.
  • the edge portion 48 has, for example, a curved course. His distance to the second longitudinal center plane M2 is smaller at each point than the distance of the first side wall edge 33 from the second longitudinal center plane M2 in the region of the clearance space profile 36 (FIG. 8).
  • the thread channel 39 has two end sections 39b, 39c, each of which has one of the two thread channel openings 42, 43.
  • the two end sections 39b, 39c extend on different sides of the first longitudinal center plane M1, which can thus serve as a separating surface between the two end sections 39b, 39c.
  • the two end portions 39b, 39c separated by a survey 51 in the region of the first longitudinal center plane M1.
  • the elevation 51 is preferably executed symmetrically to the first longitudinal center plane M1 and designed as a convex elevation or as a bump, for example.
  • the elevation 51 is rounded and has neither edges nor steps. Therefore, during sewing, a thread can slide without damage from one end section 39b, 39c to the other end section 39c or 39b.
  • the bump 51 between the two end portions 39b, 39c of the first embodiment does not protrude through this outer contour surface A.
  • the elevation 51 In the transverse direction Q, in plan view of the elevation 51 whose width decreases in the lateral direction S along the longitudinal axis L of the needle tip 25 away continuously. Likewise, the height of the bump 51 in the transverse direction Q along the longitudinal axis L decreases away from the needle tip 25.
  • the elevation 51 has a vertex 51a on which the elevation 51 has the greatest distance from the second longitudinal center plane M2.
  • the vertex 51a is arranged in the first longitudinal center plane M1.
  • the distance of the apex 51a in the transverse direction Q from the second longitudinal center plane M2 is smaller by a difference D than the distance of the first side wall edges 33 in the transverse direction Q from the second longitudinal center plane M2 (FIG. FIG. 8 ).
  • the distance of the first side wall edges 33 is measured in the region of the opening of the needle eye 30, ie in the region of the clearance 36.
  • the distance of the second side wall edges 35 from the second longitudinal center plane M2 is preferably also greater than the distance of the apex 51a from the second longitudinal center plane M2 and may for example be exactly the same as the distance of the first side wall edges 33 from the second longitudinal center plane M2.
  • the thread groove 39 has a contour which widens in the lateral direction S along the first channel portion 39a starting from the needle eye 30 in the direction of the needle tip 25 out first.
  • the two end sections 39b, 39c have in common a tapering from the channel portion 39a to the needle tip 25 contour.
  • the thread groove 39 thereby has a dimension in the lateral direction S, which decreases starting from the channel section 39a along the two end sections 39b, 39c in the direction of the needle tip 25. Characterized the thread groove 39 has at the two end portions 39b, 39c viewed in the transverse direction Q triangular contour, the side lines of this triangle can be curved.
  • the thread groove 39 has in this embodiment at the transition point between the channel portion 39a to the two end portions 39b, 39c out in the lateral direction S, the largest dimension.
  • the elevation 51 forms the essential difference between the two embodiments illustrated and described here.
  • the elevation 51 between the two end portions 51 is removed and replaced by a continuous inner surface of the thread groove.
  • the two embodiments of the sewing needle 20 are identical.
  • the yarn channel 39 is open to the front 32.
  • the thread groove 39 additionally opens in the lateral direction S on both sides of the first longitudinal center plane M1.
  • the thread trough 39 or at least the two end sections 39b, 39c, viewed in relation to the second longitudinal center plane M2, are provided exclusively on one side. The thread groove 39 thus does not pass through the second longitudinal center plane M2, but can reach the second longitudinal center plane M2.
  • the two end portions 39b, 39c, the second longitudinal center plane M2 enforce what is highly schematized in FIG. 9 is illustrated by the dashed line.
  • the entire yarn channel 39 viewed from the front side 32, to lie on the other side of the second longitudinal center plane M2.
  • the gutter section 39a can pass through the longitudinal center plane M2.
  • the second longitudinal center plane M2 is penetrated by the thread groove 39 at any point and possibly touched. This has the advantage that the sewing needle 20 can be made very easily by forming, in particular embossing, from a blank.
  • the thread groove 39 represents a Cord mich a sewing needle 20, which is configured symmetrically in the illustrated embodiment to the first longitudinal center plane M1.
  • the sewing needle 20 is generally symmetrical to the first longitudinal center plane M1.
  • FIG. 3 is schematically the width of the Cordtechnik or the thread groove 39 at different points of the first embodiment according to the FIGS. 1 to 9 shown.
  • the gutter portion 39a has a width B1 in the lateral direction S which is at least as large as the minimum distance between the two side walls 31 in the lateral direction S.
  • the two end portions 39b, 39c each have a width B2 which is smaller than the width B1 of the gutter portion 39a.
  • the width B2 of each end portion 39b, 39c is measured at right angles to a yarn guiding direction F.
  • the yarn guide direction F results from the direction of the respective edge portion 48 which is adjacent to the respective end portion 39b, 39c.
  • a gripper recess 53 is present in the working section 23 on the front side 32 of the needle body 21.
  • the needle body 21 thus has a smaller thickness in the transverse direction Q than at the two regions adjoining the gripper recess 53 along the longitudinal axis L.
  • the gripper recess 53 has two chamfers 54, which are arranged symmetrically with respect to the first longitudinal center plane M1 ( Figures 3 and 5 or 17 and 19).
  • the sewing needle 20 can cooperate with grippers of a sewing machine, which, viewed in the lateral direction S seize the thread from one side or the other.
  • the sewing needle 20 is also suitable for use in a sewing machine with two sewing needles. Due to the symmetrical design of the sewing needle 20 relative to the first longitudinal center plane M1, it can not be confused even when used in sewing machines with two needles. In such a sewing machine, two of the described sewing needles 20 can be used without the risk of confusion.
  • FIGS. 10 to 14 The use of the sewing needle 20 in a sewing machine when sewing a sewing material 60 will be explained. This explanation applies to all embodiments, even if the FIGS. 10 to 14 By way of example, the first embodiment of the sewing needle 20 according to the FIGS. 1 to 9 demonstrate.
  • the needle 20 has a distance to the fabric 60.
  • the upper thread 61 extends from the last stitch in the fabric 60 through the needle eye 30 of the needle 20.
  • the fabric 60 is moved in a first transport direction T1.
  • the first transport direction T1 is aligned parallel to the lateral direction S of the needle 20.
  • the needle 20 moves along its longitudinal axis L down to the fabric 60 back.
  • the upper thread 61 remains within one of the two thread groove mouths 42, 43 and, for example, in the first thread groove mouth 42. This prevents undesired twisting of the upper thread 61.
  • FIG. 12 has the needle 20 after its return stroke from the fabric 60 again in FIG. 10 illustrated starting position. It is now assumed that the transporting direction of the sewing material 60 is reversed. For the further sewing process, the sewing material is moved in a second transport direction T2, which is opposite to the first transport direction T1. In this reversal of direction extending from the needle eye 30 to the fabric 60 thread section of the upper thread 61 of the first thread groove mouth 42 - possibly on the existing elevation 51 - in the second thread groove mouth 43 is moved ( Figures 13 and 14 ). In this case, the upper thread 61 slides over the edge and continuously running convex elevation 51 between the two end portions 39b, 39c, if this is present. A swirl displacement of the upper thread 61 is at least substantially avoided. The upper thread 61 is moved over no angled sharp edge or step, which coincides with the extension direction of the upper thread 61 approximately, which can lead to a Aufzwirnen or Entzwirnen the upper thread 61.
  • the sewing material 60 is then in the second transport direction T2 moves and the sewing needle 20 performs a lifting movement along its longitudinal axis L. Analogous to that in the FIGS. 10 and 11 In this case, the upper thread 61 remains in the second thread groove mouth 43, as long as the sewing needle 20 has not yet pierced into the sewing material 60.
  • the sewing needle 20 is thus provided for sewing in at least two example opposite transport directions T1, T2.
  • Sewing needles according to the invention are preferably equipped with a displacement tip or a cutting tip.
  • the invention relates to a sewing needle 20 for use in a sewing machine.
  • the sewing needle 20 has a working portion 23 with a needle eye 30 and a tapered to a needle tip 25 area 24.
  • the needle eye 30 passes through a needle body 21 of the sewing needle 20 in a transverse direction Q perpendicular to a longitudinal axis L of the needle body 21.
  • On a front side 23rd of the needle body 21 is recessed relative to the outer contour of the needle body 21 introduced a Cord réelle extending from the needle eye 30 in the direction of the needle tip 25 out.
  • the Cordmaschine is formed by a thread groove 39 with two thread channels 42, 43.
  • the Cord ist is preferably carried out symmetrically to a first longitudinal center plane M1, which is spanned by the longitudinal axis L and the transverse direction Q.
  • the thread groove 39 has a channel section 39a following the needle eye 30.
  • the thread groove 39 has two end sections 39b, 39c, each with a thread groove mouth 42, 43.
  • a convex, rounded elevation 51 may, in one embodiment, separate the two end portions 39b, 39c from each other.
  • the elevation 51 is preferably symmetrical to the first longitudinal center plane M1 executed.

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  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)

Claims (16)

  1. Aiguille à coudre (20) destinée à une machine à coudre,
    comprenant un corps d'aiguille (21) qui s'étend le long d'un axe longitudinal (L) et présente une partie de support (22), destinée au serrage de l'aiguille à coudre (20) dans la machine à coudre, et une partie travaillante (23) présentant la pointe (25) de l'aiguille à coudre (20),
    comprenant un chas d'aiguille (30) qui est disposé dans la partie travaillante (23) du corps d'aiguille (21) et traverse complètement le corps d'aiguille (21),
    comprenant une rainure de fil (39) qui est disposée entre le chas d'aiguille (30) et la pointe d'aiguille (25) et qui débouche dans le chas d'aiguille (30), à l'endroit d'une arête inférieure (45) du chas d'aiguille (30) tournée vers la pointe de l'aiguille (25), caractérisée en ce que
    la rainure d'aiguille (39) présente, à distance du chas d'aiguille (30), une première embouchure de rainure de fil (42) et une deuxième embouchure de rainure de fil (43), qui sont disposées sur des côtés différents d'un premier plan médian longitudinal (M1) passant par le corps d'aiguille (21).
  2. Aiguille à coudre selon la revendication 1, caractérisée en ce que la distance entre les deux embouchures de rainure de fil (42, 43), dans une direction latérale (S) à angle droit par rapport au premier plan médian longitudinal (M1), est plus grande, au moins à quelques endroits, que la largeur de la rainure de fil (39) dans la direction latérale (S) à l'endroit adjacent au chas d'aiguille (30).
  3. Aiguille à coudre selon la revendication 1 ou 2, caractérisée en ce qu'une dimension de la rainure de fil (39), dans une direction latérale (S) à angle droit par rapport au premier plan médian longitudinal (M1), augmente en direction des deux embouchures de rainure de fil (42, 43), en partant du chas d'aiguille (30).
  4. Aiguille à coudre selon l'une des revendications précédentes, caractérisée en ce que la rainure d'aiguille (39) présente une portion de rainure (39a) qui se raccorde directement au chas d'aiguille (30).
  5. Aiguille à coudre selon la revendication 4, caractérisée en ce que la portion de rainure (39a) est délimitée sur des côtés opposés respectivement par une partie de paroi latérale (47) d'une paroi latérale (31) délimitant le chas d'aiguille (30).
  6. Aiguille à coudre selon la revendication 4 ou 5, caractérisée en ce qu'un fond de rainure (46) de la portion de rainure (39a) s'approche de l'axe longitudinal (L), en partant du chas de l'aiguille (30) en direction de la pointe de l'aiguille (25).
  7. Aiguille à coudre selon l'une des revendications 4 à 6, caractérisée en ce que la rainure de fil (39) présente deux portions d'extrémité (39b, 39c) qui s'étendent respectivement entre une embouchure de rainure de fil (42, 43) et la portion de rainure (39a).
  8. Aiguille à coudre selon la revendication 7, caractérisée en ce que les portions d'extrémité (39b, 39c) de la rainure de fil (39) sont disposées dans une région de la partie travaillante (23) qui se rétrécit en direction de la pointe de l'aiguille (25).
  9. Aiguille à coudre selon la revendication 7 ou 8, caractérisée en ce que la largeur (B2) des portions d'extrémité (39b, 39c) est inférieure à la largeur (B1) de la portion de rainure (39a).
  10. Aiguille à coudre selon l'une des revendications 7 à 9, caractérisée en ce qu'un bossage (51) est prévu entre les deux portions d'extrémité (39b, 39c) de la rainure de fil (39).
  11. Aiguille à coudre selon la revendication 10, caractérisée en ce que le bossage (51) se raccorde sans arêtes aux deux portions d'extrémité (39b, 39c) de la rainure de fil (39).
  12. Aiguille à coudre selon la revendication 10 ou 11, caractérisée en ce que le bossage (51) est incurvé sous une forme convexe et présente un sommet (51 a) à l'endroit du premier plan médian longitudinal (M1).
  13. Aiguille à coudre selon l'une des revendications précédentes, caractérisée en ce que la rainure de fil (39) ne traverse pas un deuxième plan médian longitudinal (M2) qui passe par le corps d'aiguille (21) et est orienté à angle droit par rapport au premier plan médian longitudinal (M1).
  14. Aiguille à coudre selon l'une des revendications précédentes, caractérisée en ce que le chas d'aiguille (30) est délimité, sur des côtés opposés du premier plan médian longitudinal (M1), respectivement par une paroi latérale (31) qui, sur un bord de paroi latérale (33, 35), est adjacente à la surface de contour extérieur (A) du corps d'aiguille (21).
  15. Aiguille à coudre selon la revendication 14 et selon l'une des revendications 10 à 12, caractérisée en ce que le bord de paroi latérale (33, 35) présente une distance maximale par rapport à un deuxième plan médian longitudinal (M2) orienté à angle droit par rapport au premier plan médian longitudinal (M1), qui est plus grande que la distance maximale du bossage (51) par rapport au deuxième plan médian longitudinal (M2).
  16. Utilisation de l'aiguille à coudre (20) selon l'une des revendications précédentes, dans une machine à coudre lors de la couture d'une pièce à coudre (60) qui est transportée dans au moins deux sens de transport (T) à travers la machine à coudre.
EP14151978.5A 2014-01-21 2014-01-21 Aiguille à coudre avec double nervurage Active EP2896732B1 (fr)

Priority Applications (11)

Application Number Priority Date Filing Date Title
PL14151978.5T PL2896732T3 (pl) 2014-01-21 2014-01-21 Igła szwalnicza z podwójną ochroną
EP14151978.5A EP2896732B1 (fr) 2014-01-21 2014-01-21 Aiguille à coudre avec double nervurage
MX2016009478A MX358855B (es) 2014-01-21 2015-01-19 Aguja de coser con ranura de doble torsion.
BR112016014821-5A BR112016014821B1 (pt) 2014-01-21 2015-01-19 Agulha de costura e uso da agulha de costura
JP2016547893A JP6811092B2 (ja) 2014-01-21 2015-01-19 ２本捩れ溝を有する縫い針
US15/113,350 US9758911B2 (en) 2014-01-21 2015-01-19 Sewing needle with double twist groove
PCT/EP2015/050898 WO2015110386A1 (fr) 2014-01-21 2015-01-19 Aiguille à coudre à double rainurage
CN201580005205.1A CN105899721B (zh) 2014-01-21 2015-01-19 具有双扭槽的缝纫针
KR1020167019019A KR102288010B1 (ko) 2014-01-21 2015-01-19 이중 꼬임 그루브를 구비한 재봉 바늘
ZA2016/03998A ZA201603998B (en) 2014-01-21 2016-06-13 Sewing needle with double twist groove
HK16114490A HK1226109A1 (zh) 2014-01-21 2016-12-21 具有雙扭槽的縫紉針

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14151978.5A EP2896732B1 (fr) 2014-01-21 2014-01-21 Aiguille à coudre avec double nervurage

Publications (2)

Publication Number Publication Date
EP2896732A1 EP2896732A1 (fr) 2015-07-22
EP2896732B1 true EP2896732B1 (fr) 2016-05-25

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP14151978.5A Active EP2896732B1 (fr) 2014-01-21 2014-01-21 Aiguille à coudre avec double nervurage

Country Status (11)

Country Link
US (1) US9758911B2 (fr)
EP (1) EP2896732B1 (fr)
JP (1) JP6811092B2 (fr)
KR (1) KR102288010B1 (fr)
CN (1) CN105899721B (fr)
BR (1) BR112016014821B1 (fr)
HK (1) HK1226109A1 (fr)
MX (1) MX358855B (fr)
PL (1) PL2896732T3 (fr)
WO (1) WO2015110386A1 (fr)
ZA (1) ZA201603998B (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD836324S1 (en) * 2017-06-20 2018-12-25 Nestlé Skin Health Sa Needle tip
USD926461S1 (en) * 2020-11-09 2021-08-03 Weibing She Crochet hook
PL4015692T3 (pl) * 2020-12-16 2023-11-20 Groz-Beckert Kg Igła do maszyny do szycia z wgłębieniem
WO2022254423A1 (fr) * 2021-06-04 2022-12-08 Rambam Medtech Ltd. Outils de guidage d'aiguille

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Publication number Priority date Publication date Assignee Title
US357805A (en) * 1887-02-15 Charles h
US1323340A (en) * 1919-12-02 Machine
US2221419A (en) * 1938-11-22 1940-11-12 Myrtle L Anteliff Needle
GB703934A (en) * 1951-05-22 1954-02-10 British United Shoe Machinery Improvements in or relating to needles for sewing machines
GB734656A (en) * 1953-09-16 1955-08-03 Emilio Penci Improved needles for sewing machines of the household and of the industrial type, and their system of manufacture
US3322085A (en) * 1965-09-20 1967-05-30 Allied Chem Tufting needle
US3908569A (en) * 1974-11-26 1975-09-30 Singer Co Apparatus for blind stitch sewing
JPS56136676U (fr) * 1980-03-11 1981-10-16
DE8632106U1 (de) * 1986-11-29 1987-04-09 Fa. Jos. Zimmermann, 5100 Aachen Tuftingnadel
DE19921914C2 (de) * 1999-05-12 2001-10-25 Groz Beckert Kg Nähmaschinennadel mit versetzten Öhrstegen
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
JP5160244B2 (ja) * 2008-01-10 2013-03-13 オルガン針株式会社 ミシン針

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Also Published As

Publication number Publication date
JP2017503600A (ja) 2017-02-02
BR112016014821B1 (pt) 2021-12-28
CN105899721A (zh) 2016-08-24
KR20160108345A (ko) 2016-09-19
ZA201603998B (en) 2017-08-30
WO2015110386A1 (fr) 2015-07-30
US9758911B2 (en) 2017-09-12
US20170009389A1 (en) 2017-01-12
BR112016014821A2 (pt) 2017-08-08
MX2016009478A (es) 2016-10-13
JP6811092B2 (ja) 2021-01-13
KR102288010B1 (ko) 2021-08-12
CN105899721B (zh) 2019-08-06
HK1226109A1 (zh) 2017-09-22
PL2896732T3 (pl) 2016-12-30
MX358855B (es) 2018-09-05
EP2896732A1 (fr) 2015-07-22

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