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EP1116811A1 - Needle plate for an interlock sewing machine with two or three needles - Google Patents

Needle plate for an interlock sewing machine with two or three needles Download PDF

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Publication number
EP1116811A1
EP1116811A1 EP99890387A EP99890387A EP1116811A1 EP 1116811 A1 EP1116811 A1 EP 1116811A1 EP 99890387 A EP99890387 A EP 99890387A EP 99890387 A EP99890387 A EP 99890387A EP 1116811 A1 EP1116811 A1 EP 1116811A1
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EP
European Patent Office
Prior art keywords
needle
thread
thread guide
stitch
sewing
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.)
Withdrawn
Application number
EP99890387A
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German (de)
French (fr)
Inventor
Johannes Sahl
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to EP99890387A priority Critical patent/EP1116811A1/en
Publication of EP1116811A1 publication Critical patent/EP1116811A1/en
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    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05BSEWING
    • D05B1/00General types of sewing apparatus or machines without mechanism for lateral movement of the needle or the work or both
    • D05B1/08General types of sewing apparatus or machines without mechanism for lateral movement of the needle or the work or both for making multi-thread seams
    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05BSEWING
    • D05B73/00Casings
    • D05B73/04Lower casings
    • D05B73/12Slides; Needle plates

Definitions

  • the invention relates to a needle plate for a two or three needle Interlock sewing machine for sewing a chain stitch from three or four Threads, with two or three needle insertion holes and one between two Outgoing puncture holes, in the feed direction with the release longitudinally Thread guide slots forward stitch tongue.
  • the resulting thread loops lay around the stitch tongue and are in the course of the material feed subtracted from the stitch tongue, the thread guide slots between stitch tongue and actual stitch plate the loop formation and that Allow the slings to slide off the tongue.
  • the thread tension pulling the loops together during the Sliding off the tongue making it especially soft pulling in the fabric areas above the guide slots in the guide slots or a detachment of folded hem edges or the like. can come, so that an impairment of the seam formation by this Dome or detachment of sewing material parts is to be feared.
  • the invention is therefore based on the object, a throat plate of the beginning to create the manner described, which in a simple way flawless sewing even very soft material is guaranteed.
  • the invention solves this problem in that the thread guide slots through edge steps on the needle plate side, except for the underside of the tongue Thread passage gaps in the needle insertion direction are covered, preferably the edge steps forming a sewing material support on the upper side in the connection area of the thread guide slots to the needle insertion holes a ramp exhibit.
  • the edge steps therefore close the thread guide slots in the needle insertion direction largely from and result in a sewing material support with their top, so that the sewing material when sewing against the occurring downward pulling forces is supported and no irregularities in the seam formation due to folds or bulges or edge detachments of the sewing material can occur.
  • the remaining needle passage gap provides the necessary space for Pulling off the thread loops from the stitch tongue, so that an exact, trouble-free Sewing process is guaranteed.
  • edge steps are advantageously prefabricated as separate step inserts and from below into the thread guide slots, so that it becomes a relatively simple stitch plate production comes and it is also possible to equip the throat plates with appropriate edge steps.
  • a needle plate 1 for a two-needle interlock sewing machine, not shown for sewing a chain stitch seam has two needle insertion holes 2 and an outgoing between the puncture holes 2, in the feed direction V forward tongue 3, the tongue 3 as Own insert made and in a recess 4 of the needle plate is inserted so that 3 thread guide slots 5 along the stitch tongue arise.
  • the thread guide slots 5 are up to 6 on edge-side edge steps thread passage gaps 7 open toward the bottom of the tongue in the needle insertion direction covered, which edge steps prefabricated as own step inserts 8 and are fitted into the thread guide slots 5 from below.
  • the edge steps 6 form a sewing material support 9 on its upper side, which in the connection area 10 Thread guide slots 5 to the needle insertion holes 2 in a run-up slope 11 pass over.
  • the simple measure of the edge steps 6, as shown in Fig. 5, is schematic indicated, for the sewing material N in the area of the thread guide slots 5 a support is offered, which in particular pulls soft material into the Prevents slits.
  • the two upper ones Needle threads F are chained to a chain stitch seam with a lower looper thread G, the chains are pulled against the material and thereby affect downward tensile forces on the material.
  • the edge steps 6 but strong bulges and edge detachments or the like is prevented and the sewing of a perfect chain stitch seam ensures.

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

Abstract

The needle plate (1) for an interlock sewing machine, using two or three needles to sew a chainstitch with three or four threads, has two or three needle passage holes (2) through it. A stitch tongue (3) extends forwards between two needle passage holes (2), in the fabric advance direction (V), with a free exposure of the thread guide slits (5) along the longitudinal sides. The thread guide slits (5) are covered by a thread passage gap in the needle penetration direction by edge steps (6) at the needle plate side, which extends to the under side of the stitch tongue. The upper side of a fabric support surface (9) forms a thread running chamfer (11) with the edge steps (6), at the transit zone (10) between the thread guide slits (5) and the needle passage holes (2). The edge steps (6) are prepared step inserts (8), inserted into the thread guide slits (5) from below.

Description

Die Erfindung bezieht sich auf eine Stichplatte für eine zwei- oder dreinadelige Interlock-Nähmaschine zum Nähen einer Kettenstichnaht aus drei oder vier Fäden, mit zwei oder drei Nadeleinstichlöchern und jeweils einer zwischen zwei Einstichlöchern ausgehenden, sich in Vorschubrichtung unter Freilassung längsseitiger Fadenführungsschlitze vorwärts erstreckenden Stichzunge.The invention relates to a needle plate for a two or three needle Interlock sewing machine for sewing a chain stitch from three or four Threads, with two or three needle insertion holes and one between two Outgoing puncture holes, in the feed direction with the release longitudinally Thread guide slots forward stitch tongue.

Mit diesen Interlock-Nähmaschinen lassen sich beispielsweise nach DIN 61400 die Stichtypen 406 und 407 aus drei bzw. vier Fäden erzeugen, wobei jeweils ein unterer Greiferfaden mit zwei bzw. drei oberen Nadelfäden zu einer Kettenstichnaht verkettet wird, die insbesondere zum Säumen, Randvernähen od. dgl. des Nähgutes Verwendung findet. Beim Nähen stechen die Nähnadeln durch die Nadeleinstichlöcher der Stichplatte hindurch und führen die Nadelfäden durch das Nähgut als Schleifen, durch die dann an der Stichplattenunterseite eine Schleife des Greiferfadens geführt wird, was die Verkettung mit sich bringt, welche Verkettungen gegen das Nähgut gezogen sind. Die entstehenden Fadenschlingen legen sich um die Stichzunge und werden im Zuge des Nähgutvorschubes von der Stichzunge abgezogen, wobei die Fadenführungsschlitze zwischen Stichzunge und eigentlicher Stichplatte die Schlingenbildung und das Abgleiten der Schlingen von der Stichzunge ermöglichen. Beim Nähen verursacht die Fadenspannung das Zusammenziehen der Schlingen während des Abgleitens von der Stichzunge, wodurch es vor allem bei weichen Stoffen zu einem Einziehen der oberhalb der Führungsschlitze liegenden Stoffbereiche in die Führungsschlitze bzw. einem Ablösen umgeschlagener Saumränder od. dgl. kommen kann, so daß eine Beeinträchtigung der Nahtbildung durch dieses Einwölben oder Ablösen von Nähgutteilen zu befürchten ist.With these interlock sewing machines, for example, according to DIN 61400 create stitch types 406 and 407 from three or four threads, one each lower looper thread with two or three upper needle threads to form a chain stitch is chained, in particular for hemming, edge sewing or the like. of the sewing material is used. When sewing, the sewing needles pierce through the Through the needle plate and pass the needle threads the material as loops, through which then on the underside of the stitch plate Loop of the hook thread is guided, which entails the chaining, which chains are drawn against the material. The resulting thread loops lay around the stitch tongue and are in the course of the material feed subtracted from the stitch tongue, the thread guide slots between stitch tongue and actual stitch plate the loop formation and that Allow the slings to slide off the tongue. Caused when sewing the thread tension pulling the loops together during the Sliding off the tongue, making it especially soft pulling in the fabric areas above the guide slots in the guide slots or a detachment of folded hem edges or the like. can come, so that an impairment of the seam formation by this Dome or detachment of sewing material parts is to be feared.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Stichplatte der eingangs geschilderten Art zu schaffen, die auf einfache Weise ein einwandfreies Nähen auch sehr weichen Nähgutes gewährleistet.The invention is therefore based on the object, a throat plate of the beginning to create the manner described, which in a simple way flawless sewing even very soft material is guaranteed.

Die Erfindung löst diese Aufgabe dadurch, daß die Fadenführungsschlitze durch stichplattenseitige Randstufen bis auf zur Stichzungenunterseite hin offene Fadendurchlaßspalte in Nadeleinstichrichtung abgedeckt sind, wobei vorzugsweise die oberseitig eine Nähgutauflage bildenden Randstufen im Anschlußbereich der Fadenführungsschlitze an die Nadeleinstichlöcher eine Auflaufschräge aufweisen.The invention solves this problem in that the thread guide slots through edge steps on the needle plate side, except for the underside of the tongue Thread passage gaps in the needle insertion direction are covered, preferably the edge steps forming a sewing material support on the upper side in the connection area of the thread guide slots to the needle insertion holes a ramp exhibit.

Die Randstufen schließen daher die Fadenführungsschlitze in Nadeleinstichrichtung weitgehend ab und ergeben mit ihrer Oberseite eine Nähgutauflage, so daß das Nähgut beim Nähen gegen die auftretenden abwärtsziehenden Kräfte abgestützt wird und keine Unregelmäßigkeiten bei der Nahtbildung durch Faltungen oder Wölbungen oder Randablösungen des Nähgutes entstehen können. Der verbleibende Nadeldurchlaßspalt sorgt für den erforderlichen Freiraum zum Abziehen der Fadenschlingen von der Stichzunge, so daß ein exakter, störungsfreier Nähvorgang gewährleistet ist. Um vor allem bei Nähbeginn ein unbehindertes Aufgleiten des Nähgutes auf die Randstufen sicherzustellen, weisen diese im Anschlußbereich der Führungsschlitze an die Nadeleinstichlöcher eine entsprechende Auflaufschräge auf, was ein Hängenbleiben des Nähgutes an der Randstufe vermeidet.The edge steps therefore close the thread guide slots in the needle insertion direction largely from and result in a sewing material support with their top, so that the sewing material when sewing against the occurring downward pulling forces is supported and no irregularities in the seam formation due to folds or bulges or edge detachments of the sewing material can occur. The remaining needle passage gap provides the necessary space for Pulling off the thread loops from the stitch tongue, so that an exact, trouble-free Sewing process is guaranteed. In order to have an unobstructed, especially when starting to sew Ensure that the sewing material slides onto the edge steps A corresponding area of the guide slots to the needle insertion holes Run-up slope on what is stuck to the material Avoids edge step.

Vorteilhafterweise sind die Randstufen als eigene Stufeneinsätze vorgefertigt und von unten in die Fadenführungsschlitze einsetzbar, so daß es zu einer verhältnismäßig einfachen Stichplattenfertigung kommt und es auch möglich ist, die Stichplatten nachträglich mit entsprechenden Randstufen auszustatten. The edge steps are advantageously prefabricated as separate step inserts and from below into the thread guide slots, so that it becomes a relatively simple stitch plate production comes and it is also possible to equip the throat plates with appropriate edge steps.

In der Zeichnung ist der Erfindungsgegenstand beispielsweise veranschaulicht, und zwar zeigen

Fig. 1
eine erfindungsgemäße Stichplatte in Draufsicht,
Fig. 2
einen Querschnitt nach der Linie II-II der Fig. 1, die
Fig. 3 und 4
Längsschnitte nach den Linien III-III bzw. IV-IV der Fig. 1 sowie
Fig. 5
ein Funktionsschema der Stichplatte an Hand eines Querschnittes nach der Linie V-V der Fig. 1 größeren Maßstabes.
The subject matter of the invention is illustrated in the drawing, for example, and shows
Fig. 1
a needle plate according to the invention in plan view,
Fig. 2
a cross-section along the line II-II of Fig. 1, the
3 and 4
Longitudinal sections along lines III-III and IV-IV of Fig. 1 and
Fig. 5
a functional diagram of the throat plate using a cross section along the line VV of Fig. 1 larger scale.

Eine Stichplatte 1 für eine nicht weiter dargestellte zweinadelige Interlock-Nähmaschine zum Nähen einer Kettenstichnaht weist zwei Nadeleinstichlöcher 2 und eine zwischen den Einstichlöchern 2 ausgehende, sich in Vorschubrichtung V vorwärts erstreckenden Stichzunge 3 auf, wobei die Stichzunge 3 als eigenes Einsatzstück hergestellt und in eine Ausnehmung 4 der Stichplatte eingesetzt ist, so daß längsseitig der Stichzunge 3 Fadenführungsschlitze 5 entstehen.A needle plate 1 for a two-needle interlock sewing machine, not shown for sewing a chain stitch seam has two needle insertion holes 2 and an outgoing between the puncture holes 2, in the feed direction V forward tongue 3, the tongue 3 as Own insert made and in a recess 4 of the needle plate is inserted so that 3 thread guide slots 5 along the stitch tongue arise.

Die Fadenführungsschlitze 5 sind durch stichplattenseitige Randstufen 6 bis auf zur Stichzungenunterseite hin offene Fadendurchlaßspalte 7 in Nadeleinstichrichtung abgedeckt, welche Randstufen als eigene Stufeneinsätze 8 vorgefertigt und von unten in die Fadenführungsschlitze 5 eingepaßt sind. Die Randstufen 6 bilden an ihrer Oberseite eine Nähgutauflage 9, die im Anschlußbereich 10 der Fadenführungsschlitze 5 an die Nadeleinstichlöcher 2 in eine Auflaufschräge 11 übergehen.The thread guide slots 5 are up to 6 on edge-side edge steps thread passage gaps 7 open toward the bottom of the tongue in the needle insertion direction covered, which edge steps prefabricated as own step inserts 8 and are fitted into the thread guide slots 5 from below. The edge steps 6 form a sewing material support 9 on its upper side, which in the connection area 10 Thread guide slots 5 to the needle insertion holes 2 in a run-up slope 11 pass over.

Durch die einfache Maßnahme der Randstufen 6, wird, wie in Fig. 5 schematisch angedeutet, für das zu nähende Nähgut N im Bereich der Fadenführungsschlitze 5 eine Abstützung geboten, die ein Einziehen vor allem weichen Nähgutes in die Schlitze verhindert. Beim Nähen mit den zwei Nadeln N werden die zwei oberen Nadelfäden F mit einem unteren Greiferfaden G zu einer Kettenstichnaht verkettet, wobei die Verkettungen gegen das Nähgut gezogen sind und sich dadurch auf das Nähgut abwärtsgerichtete Zugkräfte auswirken. Durch die Randstufen 6 wird aber stärkeren Auswölbungen und Randablösungen od. dgl. vorgebeugt und das Nähen einer einwandfreien Kettenstichnaht gewährleistet.The simple measure of the edge steps 6, as shown in Fig. 5, is schematic indicated, for the sewing material N in the area of the thread guide slots 5 a support is offered, which in particular pulls soft material into the Prevents slits. When sewing with the two needles N, the two upper ones Needle threads F are chained to a chain stitch seam with a lower looper thread G, the chains are pulled against the material and thereby affect downward tensile forces on the material. Through the edge steps 6 but strong bulges and edge detachments or the like is prevented and the sewing of a perfect chain stitch seam ensures.

Claims (2)

Stichplatte (1) für eine zwei- oder dreinadelige Interlock-Nähmaschine zum Nähen einer Kettenstichnaht aus drei oder vier Fäden, mit zwei oder drei Nadeleinstichlöchern (2) und jeweils einer zwischen zwei Einstichlöchern (2) ausgehenden, sich in Vorschubrichtung (V) unter Freilassung längsseitiger Fadenführungsschlitze (5) vorwärts erstreckenden Stichzunge (3), dadurch gekennzeichnet, daß die Fadenführungsschlitze (5) durch stichplattenseitige Randstufen (6) bis auf zur Stichzungenunterseite hin offene Fadendurchlaßspalte (7) in Nadeleinstichrichtung abgedeckt sind, wobei vorzugsweise die oberseitig eine Nähgutauflage (9) bildenden Randstufen (6) im Anschlußbereich (10) der Fadenführungsschlitze (5) an die Nadeleinstichlöcher (2) eine Auflaufschräge (11) aufweisen.Stitch plate (1) for a two or three needle interlock sewing machine for sewing a chain stitch from three or four threads, with two or three Needle puncture holes (2) and one between two puncture holes (2) outgoing, in the feed direction (V) with release along the long side Thread guiding slots (5) forward stitch tongue (3), characterized in that that the thread guide slots (5) through the throat plate Edge steps (6) except for thread passage gaps open towards the bottom of the tongue (7) are covered in the needle insertion direction, preferably the Edge steps (6) forming a sewing material support (9) on the upper side in the connection area (10) of the thread guide slots (5) to the needle insertion holes (2) a ramp (11). Stichplatte nach Anspruch 1, dadurch gekennzeichnet, daß die Randstufen (6) als eigene Stufeneinsätze (8) vorgefertigt und von unten in die Fadenführungsschlitze (5) einsetzbar sind.Stitch plate according to claim 1, characterized in that the edge steps (6) prefabricated as separate step inserts (8) and from below into the thread guide slots (5) can be used.
EP99890387A 1999-12-15 1999-12-15 Needle plate for an interlock sewing machine with two or three needles Withdrawn EP1116811A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP99890387A EP1116811A1 (en) 1999-12-15 1999-12-15 Needle plate for an interlock sewing machine with two or three needles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP99890387A EP1116811A1 (en) 1999-12-15 1999-12-15 Needle plate for an interlock sewing machine with two or three needles

Publications (1)

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EP1116811A1 true EP1116811A1 (en) 2001-07-18

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3252196A1 (en) * 2016-06-01 2017-12-06 Technische Universität Dresden Sewing device, method for producing a sewn multilayer structure and sewn multilayer structure
CN107599080A (en) * 2017-10-08 2018-01-19 林群祥 Veneer vibrates spot-punching machine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1890075A (en) * 1930-05-28 1932-12-06 Singer Mfg Co Sewing machine work-support
FR2648162A1 (en) * 1989-06-07 1990-12-14 Union Special Gmbh DEVICE FOR FORMING A THREAD OF THREADS ON A SEWING MACHINE WITH MULTIPLE NEEDLES
JPH0716365A (en) * 1993-06-30 1995-01-20 Pegasus Sewing Mach Mfg Co Ltd Throat plate of two-needle chain stitch sewing machine
GB2283503A (en) * 1993-11-05 1995-05-10 James Thomas Lahiff Sewing apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1890075A (en) * 1930-05-28 1932-12-06 Singer Mfg Co Sewing machine work-support
FR2648162A1 (en) * 1989-06-07 1990-12-14 Union Special Gmbh DEVICE FOR FORMING A THREAD OF THREADS ON A SEWING MACHINE WITH MULTIPLE NEEDLES
JPH0716365A (en) * 1993-06-30 1995-01-20 Pegasus Sewing Mach Mfg Co Ltd Throat plate of two-needle chain stitch sewing machine
GB2283503A (en) * 1993-11-05 1995-05-10 James Thomas Lahiff Sewing apparatus

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 04 31 May 1995 (1995-05-31) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3252196A1 (en) * 2016-06-01 2017-12-06 Technische Universität Dresden Sewing device, method for producing a sewn multilayer structure and sewn multilayer structure
CN107599080A (en) * 2017-10-08 2018-01-19 林群祥 Veneer vibrates spot-punching machine

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