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EP0457008B1 - Blind stitch sewing machine - Google Patents

Blind stitch sewing machine Download PDF

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Publication number
EP0457008B1
EP0457008B1 EP91105154A EP91105154A EP0457008B1 EP 0457008 B1 EP0457008 B1 EP 0457008B1 EP 91105154 A EP91105154 A EP 91105154A EP 91105154 A EP91105154 A EP 91105154A EP 0457008 B1 EP0457008 B1 EP 0457008B1
Authority
EP
European Patent Office
Prior art keywords
label
garment
needle
stop
throat plate
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
EP91105154A
Other languages
German (de)
French (fr)
Other versions
EP0457008A3 (en
EP0457008A2 (en
Inventor
Philipp Moll
Heinz-Wilhelm Dederichs
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.)
J Strobel & Sohne & Co GmbH
Original Assignee
J Strobel & Sohne & Co GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by J Strobel & Sohne & Co GmbH filed Critical J Strobel & Sohne & Co GmbH
Publication of EP0457008A2 publication Critical patent/EP0457008A2/en
Publication of EP0457008A3 publication Critical patent/EP0457008A3/en
Application granted granted Critical
Publication of EP0457008B1 publication Critical patent/EP0457008B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • D05B1/24General types of sewing apparatus or machines without mechanism for lateral movement of the needle or the work or both for making blind-stitch seams
    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05BSEWING
    • D05B85/00Needles
    • D05B85/06Curved needles
    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05DINDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
    • D05D2303/00Applied objects or articles
    • D05D2303/20Small textile objects e.g., labels, beltloops

Definitions

  • the invention relates to a blind sewing machine specified in the preamble of claim 1.
  • the fabric flexor can be axially displaced in a sleeve against the action of a helical compression spring arranged in the sleeve, the pretensioning of which can be changed without influencing the position of the fabric flexor with respect to the sleeve.
  • the sleeve is oriented perpendicular to the needle plate arranged at the head of the blind sewing machine and in turn can be moved axially back and forth on the fabric support arm of the blind sewing machine by means of a drive shaft mounted in the fabric support arm, with which the sleeve is connected so that even the smallest distance can be changed, up to which the sleeve can approach the needle plate when the blind sewing machine is in operation.
  • the stop against which the fabric flexor bulges the sewing material inserted in the blind sewing machine is pivotably mounted on the needle plate on the side thereof facing away from the fabric flexor about an axis running transversely to the material feed direction and is adjustable by means of an adjusting screw engaging the stop and screwable into the stitch plate,
  • an adjusting screw engaging the stop and screwable into the stitch plate
  • blind sewing machines of this type are not readily suitable for the subsequent sewing of labels with an unevenly thick peripheral edge on finished items of clothing along the label edge. It is not guaranteed that when sewing on such a label the bow needle of the blind sewing machine always sticks exactly the same depth into the item of clothing, for example when sewing on a square label with two folded-over parallel edges along all four label edges both on the two single-layer label edges and on the two two-ply label edges. This but is necessary for the correct attachment of the label. If, for example, it is to be sewn onto the lining of the item of clothing, on the one hand the bow needle must not pierce the layer of fabric covered by the generally very thin lining and on the other hand it must not happen that the bow needle does not pierce the lining.
  • the invention has for its object to provide a blind sewing machine of the type specified in the preamble of claim 1, with which labels with an unevenly thick circumferential edge, in particular square labels with two folded parallel edges, subsequently to finished items of clothing along the circumferential label edge or all four Label edges can be sewn on perfectly.
  • the blind sewing machine shown in FIGS. 2 to 4 is used, for example, to subsequently attach a rectangular label 1 to the lining 2 of a jacket 3 in the region of the central back seam 4 of the jacket outer material 5 along all four label edges 6, 7, 8 and 9 sew on with 10 seams each.
  • the two longitudinal edges 7 and 9 of the label have one layer, the two transverse edges 6 and 8 have two layers, because the two cut edges 11 of the label 1 cut off from a tape have been folded over.
  • the sewn-on label 1 runs transversely to the back seam 4 of the outer shell material 5.
  • the blind sewing machine has a needle plate 12 and a curved needle 13, which swings back and forth above the needle plate 12 along an arc-shaped movement path in the direction of the arrows 14 and 15 when the blind sewing machine is in operation.
  • the needle plate 12 and the bow needle 13 are provided on the head of the blind sewing machine.
  • the blind sewing machine has a presser plate 17 which is loaded by a helical compression spring 16 on the needle plate 12 and a fabric flexor 18 which is oriented perpendicular to the needle plate 12 and moves back and forth in a straight line in the direction of the arrows 19 and 20 when the blind sewing machine is in Operation.
  • the presser plate 17 and the flexor 18 are provided at the free end of the support arm 21 of the blind sewing machine, on which the helical compression spring 16 of the presser plate 17 is supported and with which the support arm 21 projects under the head of the blind sewing machine.
  • the fabric flexor 18 is axially displaceable in a sleeve 24 axially displaceably in the fabric support arm 21 and connected by means of a link 22 to a drive shaft 23 rotatably mounted in the fabric support arm 21 against the action of a helical compression spring 25 and cooperates with a stop 26 on the needle plate 12.
  • the pretension of the helical compression spring 25 arranged in the sleeve 24 can be changed by means of an adjusting nut 29 which can be screwed onto the end of the shaft 28 of the fabric flexor 18 which is provided with an external thread and protrudes from the bottom 27 of the sleeve 24 and with which a locking nut 30 also interacts can be screwed onto the end of the shaft 28.
  • the stop 26 is L-shaped and has a first arm 31 and a second arm 32, which are perpendicular to each other.
  • the needle plate 12 is provided on the side facing away from the fabric flexor 18 with a projection 33, on which the stop 26 is pivotally mounted about an axis 34, so that its first arm 31 into a slot 35 of the needle plate 12 and towards the fabric flexor 18 protrudes, while the second arm 32 of the stop 26 extends approximately parallel to the throat plate 12 in order to be supported by an adjusting screw 36 on the throat plate 12, which can be screwed into a threaded bore at the free end of the second arm 32.
  • the stop 26 is provided with a bolt 37 which is received in a corresponding bore 38 at the free end of the projection 33 and has a head 39 which overlaps the bore 38.
  • the throat plate 12 is also provided with a bridge 40 which bridges the slot 35 of the throat plate 12 which runs transversely to the pivot axis 34 of the stop 26 at the end facing away from the adjusting screw 36.
  • the free end of the fabric flexor 18 is conical transversely to the slot 35 of the needle plate 12 and the first arm 31 of the stop 26 is provided with a groove 41 on the free end facing this fabric flexion tip, which is parallel to the Slot 35 extends and on the right in Fig. 2 from an oblique nose 42 of the first arm 31, which projects downward to the right.
  • the stop 26 has a guide bar 43 parallel to its second arm 32 on the right side in FIG. 2, the distance of which from the lateral nose 42 of the first arm 31 can be changed, for which purpose the guide bar 43 is attached to the stop 26 by means of two screws 44 is attached, which each pass through an elongated hole 45 of the guide bar 43 running parallel to the first arm 31.
  • a fixing needle 46 is provided on the fabric support arm 21 of the blind sewing machine, which extends parallel to the fabric flexor 18 on the right side in FIG. 3 and can be moved by means of a compressed air cylinder 47 to the slot 35 of the needle plate 12 .
  • the compressed air cylinder 47 displaces a support 48 with an arm 49 bent at right angles to the fabric flexor 18, on which the fixing needle 46 is arranged and which rests with its end face 50, which runs transversely to the fabric flexor 18, on a likewise flat side surface 51 of the fabric flexor 18, so that the fabric flexor 18 cannot rotate in the sleeve 24.
  • the jacket 3 and the label 1 are inserted into the blind sewing machine and at the end of each of the first three seams 10 are rotated by a right angle that the four label edges 6, 7, 8 and 9 successively on the stop 26 of the needle plate 12 on the in Fig. 2 run past the same on the right.
  • the jacket 3 and the label 1 are gradually advanced in the usual manner in the direction of the arrow 52 (FIGS. 3 and 4), the resilient flexor 18 after each feed step by the jacket 3 by the by the in the slot 35 extending in the direction of advance 52 bulges and presses against the stop 26 thereof, namely into the groove 41 of the first arm 31 of the same, while the respective label edge 6 or 7 or 8 or 9 through the nose 42 of the first arm 31 of the stop 26 from the feed 2 of the jacket 3 is spread apart, which engages between the label edge 6 or 7 or 8 or 9 and the lining 2.
  • the presser plate 17 can also consist of two parts, which are arranged in FIG. 2 to the right or left of the flexor 18 and are each separately movable perpendicular to the throat plate 12.
  • the arching needle 13 which swings back and forth transversely to the feed direction 52, sticks into the label edge 6 or 7 or 8 or 9 after each feed step, which is bent by the nose 42 of the stop 26 from the jacket 3 or its lining 2 and on the guide bar 43 of the stop 26 abuts, which is also arranged on the side of the stop 26 facing the curved needle 13 when it vibrates in the puncturing direction 14.
  • the arch needle 13 After piercing the label edge 6 or 7 or 8 or 9, the arch needle 13 pierces the lining 2 of the jacket 3 at the apex of the bulge caused by the fabric flexor 18, in order to pierce the lining 2, as is particularly evident from FIG. 2 can be seen, and finally to swing back in the direction of arrow 15 according to FIG. 2.
  • the stop 26 of the throat plate 12 is adjusted by means of the adjusting screw 36 so that the curved needle 13 sticks securely into the lining 2 of the jacket 3, and only into the lining 2 and not also into the outer jacket 5.
  • the guide bar 43 of the stop 26 is set so that the desired distance 55 of each seam 10 results from the associated label edge 6 or 7 or 8 or 9 (Fig. 1).
  • the fixing needle 46 is used as an aid. If, for example, as shown in FIG. 4, when sewing the third edge 8 of the label 1 to the lining 2 of the jacket 3 illustrated in FIG. 2, the last stitch 56 of the relevant seam 10 has been completed and the jacket 3 and the label 1 have subsequently been advanced by one step in the direction of the arrow 52, namely during the oscillation of the curved needle 13 in the direction of the arrow 15 after leaving the label edge 8 and its subsequent oscillation in the direction of the arrow 14 in Fig. 2 to the position shown in FIG.
  • the blind sewing machine is stopped, the compressed air cylinder 47 is actuated to move the fixing needle 46 so that it at least in the jacket 3 or its outer fabric 5 and lining 2 the place of the last bow needle insertion 57, namely below the point where the bow needle 13 last pierced the label edge 8, and finally moved the presser plate 17 by means of a compressed air cylinder, not shown, away from the throat plate 12 to the jacket 3 and that Release label 1.
  • a compressed air cylinder not shown

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

Abstract

Blind stitch sewing machine, with a flexibly yielding material deflector (18) for curving the step-fed work after each feed step through an opening (35) of the throat plate (12) into the circular path of movement of the arched needle (13) swinging to and fro laterally to the work feed device (52), and with a guard (26) arranged on the throat plate (12) for the curved work. For subsequent sewing of labels (1) with unevenly thick surrounding border (6,7,8,9) to finished garments (3) along the label border (6,7,8,9) in such a way that the arched needle (13) penetrates the border (6,7,8,9) of the label (1) placed on the garment (3) and emerges from the garment (3), the guard (26) of the throat plate (12) is formed in such a way that the label border (6,7,8,9) is spread away from the garment (3) at the guard (26) and that only the garment (3) is pressed against the guard (26) by the material deflector (18). <IMAGE>

Description

Die Erfindung bezieht sich auf eine Blindnähmaschine der im Oberbegriff des Patentanspruchs 1 angegebenen Art.The invention relates to a blind sewing machine specified in the preamble of claim 1.

Solche Blindnähmaschinen sind bekannt (DE-C 11 02 535). Dabei ist der Stoffbeuger in einer Hülse entgegen der Wirkung einer in der Hülse angeordneten Schraubendruckfeder axial verschiebbar, deren Vorspannung ohne Beeinflussung der Stellung des Stoffbeugers bezüglich der Hülse verändert werden kann. Die Hülse ist senkrecht zu der am Kopf der Blindnähmaschine angeordneten Stichplatte orientiert und ihrerseits am Stofftragarm der Blindnähmaschine mittels einer im Stofftragarm gelagerten Antriebswelle axial hin- und herbewegbar, mit welcher die Hülse so verbunden ist, daß auch derjenige geringste Abstand verändert werden kann, bis zu welchem die Hülse sich der Stichplatte zu nähern vermag, wenn die Blindnähmaschine in Betrieb ist. Der Anschlag, gegen welchen der Stoffbeuger dabei das in die Blindnähmaschine eingelegte Nähgut auswölbt, ist an der Stichplatte auf der dem Stoffbeuger abgewandten Seite derselben um eine quer zur Nähgutvorschubrichtung verlaufende Achse schwenkbar gelagert und mittels einer am Anschlag angreifenden und in der Stichplatte verschraubbaren Einstellschraube verstellbar, um die durch die jeweilige Einstellung des Mindestabstandes zwischen der angetriebenen Hülse und der Stichplatte definierte Einstichtiefe der ebenfalls auf der dem Stoffbeuger abgewandten Seite der Stichplatte hin- und herschwingenden Bogennadel in das Nähgut auch bei Nähgutverdickungen zu gewährleisten, wozu auch die Vorspannung der den Stoffbeuger belastenden Schraubendruckfeder entsprechend eingestellt wird.Such blind sewing machines are known (DE-C 11 02 535). Here, the fabric flexor can be axially displaced in a sleeve against the action of a helical compression spring arranged in the sleeve, the pretensioning of which can be changed without influencing the position of the fabric flexor with respect to the sleeve. The sleeve is oriented perpendicular to the needle plate arranged at the head of the blind sewing machine and in turn can be moved axially back and forth on the fabric support arm of the blind sewing machine by means of a drive shaft mounted in the fabric support arm, with which the sleeve is connected so that even the smallest distance can be changed, up to which the sleeve can approach the needle plate when the blind sewing machine is in operation. The stop against which the fabric flexor bulges the sewing material inserted in the blind sewing machine is pivotably mounted on the needle plate on the side thereof facing away from the fabric flexor about an axis running transversely to the material feed direction and is adjustable by means of an adjusting screw engaging the stop and screwable into the stitch plate, In order to ensure the penetration depth of the curved needle, which also swings back and forth on the side of the needle plate facing away from the fabric flexor, into the material to be sewn, also defined by the respective setting of the minimum distance between the driven sleeve and the needle plate, even when the material is thickened, which also includes the pretensioning of the helical compression spring loading the fabric flexor is set accordingly.

Derartige Blindnähmaschinen sind zum nachträglichen Annähen von Etiketten mit ungleichmäßig dicker umlaufender Kante an fertige Bekleidungsstücke entlang der Etikettkante nicht ohne weiteres geeignet. Es ist nicht gewährleistet, daß beim Annähen eines solchen Etiketts die Bogennadel der Blindnähmaschine immer genau gleich tief in das Bekleidungsstück einsticht, beispielsweise beim Annähen eines viereckigen Etiketts mit zwei umgefalteten parallelen Kanten entlang aller vier Etikettkanten sowohl an den beiden einlagigen Etikettkanten als auch an den beiden zweilagigen Etikettkanten. Dieses ist aber für die einwandfreie Befestigung des Etiketts erforderlich. Wenn es beispielsweise an das Futter des Bekleidungsstücks angenäht werden soll, darf einerseits die Bogennadel nicht in die von dem in der Regel sehr dünnen Futter bedeckte Stofflage einstechen und darf es andererseits nicht geschehen, daß die Bogennadel das Futter nicht ansticht.Blind sewing machines of this type are not readily suitable for the subsequent sewing of labels with an unevenly thick peripheral edge on finished items of clothing along the label edge. It is not guaranteed that when sewing on such a label the bow needle of the blind sewing machine always sticks exactly the same depth into the item of clothing, for example when sewing on a square label with two folded-over parallel edges along all four label edges both on the two single-layer label edges and on the two two-ply label edges. This but is necessary for the correct attachment of the label. If, for example, it is to be sewn onto the lining of the item of clothing, on the one hand the bow needle must not pierce the layer of fabric covered by the generally very thin lining and on the other hand it must not happen that the bow needle does not pierce the lining.

Es ist bekannt, viereckige Etiketten, welche von einem Band abgeschnitten und deren beide Schnittkanten umgefaltet worden sind, mittels einer Nähmaschine mit gerader Nadel nachträglich an fertige Bekleidungsstücke entlang aller vier Etikettkanten anzunähen, wobei die Nadel sowohl die Etikettkanten als auch das Bekleidungsstück senkrecht durchsticht, und zwar vollständig. Nachteiligerweise sind die vier Nähte an den Etikettkanten nicht nur auf dem Etikett sichtbar, sondern auch auf der Außenseite des Bekleidungsstücks (US-A 25 60 186 und DE-B 16 60 818). Auch ist es bekannt, Etiketten punktweise an Bekleidungsstücke mittels spezieller Blindnähmaschinen anzunähen, welche sogenannte Punktriegel erzeugen. Diese sind auf der Außenseite des Bekleidungsstücks nicht sichtbar (DE-C 35 15 189 und 35 19 849).It is known to subsequently sew square labels, which have been cut from a tape and whose two cut edges have been folded over, by means of a sewing machine with a straight needle onto finished items of clothing along all four label edges, the needle piercing both the label edges and the item of clothing vertically, and completely. Disadvantageously, the four seams on the label edges are not only visible on the label, but also on the outside of the item of clothing (US-A 25 60 186 and DE-B 16 60 818). It is also known to sew labels onto items of clothing point by point using special blind sewing machines which produce so-called point bars. These are not visible on the outside of the garment (DE-C 35 15 189 and 35 19 849).

Der Erfindung liegt die Aufgabe zugrunde, eine Blindnähmaschine der im Oberbegriff des Patentanspruchs 1 angegebenen Gattung zu schaffen, mit welcher Etiketten mit ungleichmäßig dicker umlaufender Kante, insbesondere viereckige Etiketten mit zwei umgefalteten parallelen Kanten, nachträglich an fertige Bekleidungsstücke entlang der umlaufenden Etikettkante bzw. aller vier Etikettkanten einwandfrei angenäht werden können.The invention has for its object to provide a blind sewing machine of the type specified in the preamble of claim 1, with which labels with an unevenly thick circumferential edge, in particular square labels with two folded parallel edges, subsequently to finished items of clothing along the circumferential label edge or all four Label edges can be sewn on perfectly.

Diese Aufgabe ist durch die im kennzeichnenden Teil des Patentanspruchs 1 angegebenen Merkmale gelöst. Vorteilhafte Ausgestaltungen der erfindungsgemäßen Blindnähmaschine sind in den restlichen Patentansprüchen angegeben.This object is achieved by the features specified in the characterizing part of patent claim 1. Advantageous embodiments of the blind sewing machine according to the invention are specified in the remaining claims.

Nachstehend ist eine Ausführungsform der erfindungsgemäßen Blindnähmaschine anhand von Zeichnungen beispielsweise beschrieben. Darin zeigt:

Fig. 1
perspektivisch ein mittels der Blindnähmaschine nachträglich an ein fertiges Bekleidungsstück angenähtes Etikett;
Fig. 2
den Schnitt der Blindnähmaschine entlang der Linie II-II in Fig. 3 mit eingelegtem Nähgut beim Nähen;
Fig. 3
den Schnitt der Blindnähmaschine entlang der Linie III-III in Fig. 2, und zwar ohne Nähgut; und
Fig. 4
die Ansicht der Blindnähmaschine in Richtung des Pfeils IV in Fig. 3, jedoch wiederum mit eingelegtem Nähgut beim Nähen.
An embodiment of the blind sewing machine according to the invention is described below with reference to drawings, for example. It shows:
Fig. 1
in perspective a label subsequently sewn onto a finished item of clothing by means of the blind sewing machine;
Fig. 2
the section of the blind sewing machine along the line II-II in Figure 3 with inserted material when sewing.
Fig. 3
the section of the blind sewing machine along the line III-III in Figure 2, and without sewing material. and
Fig. 4
the view of the blind sewing machine in the direction of arrow IV in Fig. 3, but again with inserted material when sewing.

Die in Fig. 2 bis 4 dargestellte Blindnähmaschine wird beispielsweise dazu verwendet, um gemäß Fig. 1 ein rechteckiges Etikett 1 nachträglich an das Futter 2 eines Mantels 3 im Bereich der mittleren Rückennaht 4 des Mantelaußenstoffs 5 entlang aller vier Etikettkanten 6, 7, 8 und 9 mit je einer Naht 10 anzunähen. Die beiden Längskanten 7 und 9 des Etiketts sind einlagig, die beiden Querkanten 6 und 8 zweilagig, weil die beiden Schnittkanten 11 des von einem Band abgeschnittenen Etiketts 1 umgefaltet worden sind. Das angenähte Etikett 1 verläuft quer zur Rückennaht 4 des Mantelaußenstoffs 5.The blind sewing machine shown in FIGS. 2 to 4 is used, for example, to subsequently attach a rectangular label 1 to the lining 2 of a jacket 3 in the region of the central back seam 4 of the jacket outer material 5 along all four label edges 6, 7, 8 and 9 sew on with 10 seams each. The two longitudinal edges 7 and 9 of the label have one layer, the two transverse edges 6 and 8 have two layers, because the two cut edges 11 of the label 1 cut off from a tape have been folded over. The sewn-on label 1 runs transversely to the back seam 4 of the outer shell material 5.

Die Blindnähmaschine weist eine Stichplatte 12 und eine Bogennadel 13 auf, welche oberhalb der Stichplatte 12 entlang einer kreisbogenförmigen Bewegungsbahn in Richtung der Pfeile 14 und 15 hin- und herschwingt, wenn die Blindnähmaschine sich in Betrieb befindet. Die Stichplatte 12 und die Bogennadel 13 sind am Kopf der Blindnähmaschine vorgesehen.The blind sewing machine has a needle plate 12 and a curved needle 13, which swings back and forth above the needle plate 12 along an arc-shaped movement path in the direction of the arrows 14 and 15 when the blind sewing machine is in operation. The needle plate 12 and the bow needle 13 are provided on the head of the blind sewing machine.

Weiterhin weist die Blindnähmaschine eine durch eine Schraubendruckfeder 16 auf die Stichplatte 12 zu belastete Stoffdrückerplatte 17 und einen Stoffbeuger 18 auf, welcher senkrecht zur Stichplatte 12 orientiert ist und sich geradlinig in Richtung der Pfeile 19 und 20 hin- und herbewegt, wenn die Blindnähmaschine sich in Betrieb befindet. Die Stoffdrückerplatte 17 und der Stoffbeuger 18 sind am freien Ende des Stofftragarms 21 der Blindnähmaschine vorgesehen, an welchem sich die Schraubendruckfeder 16 der Stoffdrückerplatte 17 abstützt und mit welchem der Stofftragarm 21 unter den Kopf der Blindnähmaschine ragt.Furthermore, the blind sewing machine has a presser plate 17 which is loaded by a helical compression spring 16 on the needle plate 12 and a fabric flexor 18 which is oriented perpendicular to the needle plate 12 and moves back and forth in a straight line in the direction of the arrows 19 and 20 when the blind sewing machine is in Operation. The presser plate 17 and the flexor 18 are provided at the free end of the support arm 21 of the blind sewing machine, on which the helical compression spring 16 of the presser plate 17 is supported and with which the support arm 21 projects under the head of the blind sewing machine.

Der Stoffbeuger 18 ist in einer im Stofftragarm 21 axial verschieblich gelagerten und mittels eines Lenkers 22 mit einer im Stofftragarm 21 drehbar gelagerten Antriebswelle 23 verbundenen Hülse 24 entgegen der Wirkung einer Schraubendruckfeder 25 axial verschiebbar und wirkt mit einem Anschlag 26 an der Stichplatte 12 zusammen. Die Vorspannung der in der Hülse 24 angeordneten Schraubendruckfeder 25 kann mittels einer auf dem mit einem Außengewinde versehenen und aus dem Boden 27 der Hülse 24 herausragenden Ende des Schaftes 28 des Stoffbeugers 18 verschraubbaren Einstellmutter 29 verändert werden, mit welcher eine Sicherungsmutter 30 zusammenwirkt, die gleichfalls auf dem Ende des Schaftes 28 verschraubbar ist. Allerdings ist es auch möglich, zur Einstellung der Vorspannung der den Stoffbeuger 18 belastenden Schraubendruckfeder 25 die Maßnahmen nach der DE-C 11 02 535 zu treffen.The fabric flexor 18 is axially displaceable in a sleeve 24 axially displaceably in the fabric support arm 21 and connected by means of a link 22 to a drive shaft 23 rotatably mounted in the fabric support arm 21 against the action of a helical compression spring 25 and cooperates with a stop 26 on the needle plate 12. The pretension of the helical compression spring 25 arranged in the sleeve 24 can be changed by means of an adjusting nut 29 which can be screwed onto the end of the shaft 28 of the fabric flexor 18 which is provided with an external thread and protrudes from the bottom 27 of the sleeve 24 and with which a locking nut 30 also interacts can be screwed onto the end of the shaft 28. However, it is also possible to take the measures according to DE-C 11 02 535 to adjust the pretension of the helical compression spring 25 loading the flexor 18.

Der Anschlag 26 ist L-förmig ausgebildet und weist einen ersten Arm 31 sowie einen zweiten Arm 32 auf, welche rechtwinklig zueinander verlaufen. Die Stichplatte 12 ist auf der dem Stoffbeuger 18 abgewandten Seite mit einem Vorsprung 33 versehen, an welchem der Anschlag 26 um eine Achse 34 schwenkbar gelagert ist, so daß dessen erster Arm 31 in einen Schlitz 35 der Stichplatte 12 hinein und auf den Stoffbeuger 18 zu ragt, während der zweite Arm 32 des Anschlags 26 etwa parallel zur Stichplatte 12 verläuft, um sich über eine Einstellschraube 36 an der Stichplatte 12 abzustützen, welche in einer Gewindebohrung am freien Ende des zweiten Arms 32 verschraubbar ist. Zur Lagerung des Anschlags 26 am Vorsprung 33 der Stichplatte 12 ist der Anschlag 26 mit einem Bolzen 37 versehen, welcher in einer entsprechenden Bohrung 38 am freien Ende des Vorsprungs 33 aufgenommen ist und einen die Bohrung 38 übergreifenden Kopf 39 aufweist. Die Stichplatte 12 ist auch noch mit einer Brücke 40 versehen, welche den quer zur Schwenkachse 34 des Anschlags 26 verlaufenden Schlitz 35 der Stichplatte 12 an dem der Einstellschraube 36 abgewandten Ende überbrückt.The stop 26 is L-shaped and has a first arm 31 and a second arm 32, which are perpendicular to each other. The needle plate 12 is provided on the side facing away from the fabric flexor 18 with a projection 33, on which the stop 26 is pivotally mounted about an axis 34, so that its first arm 31 into a slot 35 of the needle plate 12 and towards the fabric flexor 18 protrudes, while the second arm 32 of the stop 26 extends approximately parallel to the throat plate 12 in order to be supported by an adjusting screw 36 on the throat plate 12, which can be screwed into a threaded bore at the free end of the second arm 32. To mount the stop 26 on the projection 33 of the throat plate 12, the stop 26 is provided with a bolt 37 which is received in a corresponding bore 38 at the free end of the projection 33 and has a head 39 which overlaps the bore 38. The throat plate 12 is also provided with a bridge 40 which bridges the slot 35 of the throat plate 12 which runs transversely to the pivot axis 34 of the stop 26 at the end facing away from the adjusting screw 36.

Wie besonders deutlich aus Fig. 2 hervorgeht, ist das freie Ende des Stoffbeugers 18 quer zum Schlitz 35 der Stichplatte 12 konisch ausgebildet und der erste Arm 31 des Anschlags 26 an dem dieser Stoffbeugerspitze zugewandten freien Ende mit einer Nut 41 versehen, welche sich parallel zum Schlitz 35 erstreckt und auf der in Fig. 2 rechten Seite von einer schräg nach rechts unten ragenden Nase 42 des ersten Arms 31 begrenzt wird. Weiterhin weist der Anschlag 26 eine zu seinem zweiten Arm 32 parallele Führungsleiste 43 auf der in Fig. 2 rechten Seite auf, deren Abstand von der seitlichen Nase 42 des ersten Arms 31 verändert werden kann, wozu die Führungsleiste 43 mittels zweier Schrauben 44 am Anschlag 26 befestigt ist, welche jeweils ein parallel zum ersten Arm 31 verlaufendes Langloch 45 der Führungsleiste 43 durchsetzen.As can be seen particularly clearly from FIG. 2, the free end of the fabric flexor 18 is conical transversely to the slot 35 of the needle plate 12 and the first arm 31 of the stop 26 is provided with a groove 41 on the free end facing this fabric flexion tip, which is parallel to the Slot 35 extends and on the right in Fig. 2 from an oblique nose 42 of the first arm 31, which projects downward to the right. Furthermore, the stop 26 has a guide bar 43 parallel to its second arm 32 on the right side in FIG. 2, the distance of which from the lateral nose 42 of the first arm 31 can be changed, for which purpose the guide bar 43 is attached to the stop 26 by means of two screws 44 is attached, which each pass through an elongated hole 45 of the guide bar 43 running parallel to the first arm 31.

Zusätzlich zur Stoffdrückerplatte 17 und zum Stoffbeuger 18 ist am Stofftragarm 21 der Blindnähmaschine eine Fixiernadel 46 vorgesehen, welche sich parallel zum Stoffbeuger 18 auf der in Fig. 3 rechten Seite desselben erstreckt und mittels eines Druckluftzylinders 47 auf den Schlitz 35 der Stichplatte 12 zu bewegbar ist. Dabei verschiebt der Druckluftzylinder 47 einen Träger 48 mit einem zum Stoffbeuger 18 hin rechtwinklig abgebogenen Arm 49, auf welchem die Fixiernadel 46 angeordnet ist und welcher mit seiner quer zum Stoffbeuger 18 verlaufenden Stirnfläche 50 an einer ebenfalls ebenen Seitenfläche 51 des Stoffbeugers 18 anliegt, so daß der Stoffbeuger 18 sich in der Hülse 24 nicht drehen kann.In addition to the presser plate 17 and the fabric flexor 18, a fixing needle 46 is provided on the fabric support arm 21 of the blind sewing machine, which extends parallel to the fabric flexor 18 on the right side in FIG. 3 and can be moved by means of a compressed air cylinder 47 to the slot 35 of the needle plate 12 . The compressed air cylinder 47 displaces a support 48 with an arm 49 bent at right angles to the fabric flexor 18, on which the fixing needle 46 is arranged and which rests with its end face 50, which runs transversely to the fabric flexor 18, on a likewise flat side surface 51 of the fabric flexor 18, so that the fabric flexor 18 cannot rotate in the sleeve 24.

Bei der Befestigung des Etiketts 1 am Mantel 3 wird zunächst die Etikettkante 6, danach die Etikettkante 7, anschließend die Etikettkante 8 und schließlich die Etikettkante 9 an das Futter 2 des Mantels 3 mit je einer Naht 10 angenäht. Dazu werden der Mantel 3 und das Etikett 1 so in die Blindnähmaschine eingelegt und am Ende jeder der drei ersten Nähte 10 um einen rechten Winkel gedreht, daß die vier Etikettkanten 6, 7, 8 und 9 nacheinander am Anschlag 26 der Stichplatte 12 auf der in Fig. 2 rechten Seite desselben vorbeilaufen.When attaching the label 1 to the jacket 3, first the label edge 6, then the label edge 7, then the label edge 8 and finally the label edge 9 are sewn onto the lining 2 of the jacket 3, each with a seam 10. For this purpose, the jacket 3 and the label 1 are inserted into the blind sewing machine and at the end of each of the first three seams 10 are rotated by a right angle that the four label edges 6, 7, 8 and 9 successively on the stop 26 of the needle plate 12 on the in Fig. 2 run past the same on the right.

Beim Nähen jeder Naht 10 werden der Mantel 3 und das Etikett 1 auf übliche Art und Weise schrittweise in Richtung des Pfeils 52 (Fig. 3 und 4) vorgeschoben, wobei der federnd nachgiebige Stoffbeuger 18 den Mantel 3 nach jedem Vorschubschritt durch die von dem in der Vorschubrichtung 52 verlaufenden Schlitz 35 gebildete Öffnung der Stichplatte 12 hindurch auswölbt und gegen deren Anschlag 26 drückt, und zwar in die Nut 41 des ersten Arms 31 desselben, während die jeweilige Etikettkante 6 bzw. 7 bzw. 8 bzw. 9 durch die Nase 42 des ersten Arms 31 des Anschlags 26 vom Futter 2 des Mantels 3 abgespreizt wird, welche zwischen die Etikettkante 6 bzw. 7 bzw. 8 bzw. 9 und das Futter 2 eingreift. Die federbelastete Stoffdrückerplatte 17 mit einer Durchtrittsöffnung 53 für den Stoffbeuger 18 und einem im Stofftragarm 21 der Blindnähmaschine axial verschieblich gelagerten Fuß 54 preßt dabei den Mantel 3 und das Etikett 1 an die Stichplatte 12, wie besonders deutlich aus Fig. 2 hervorgeht, woraus sich auch ergibt, daß die beiden Abschnitte der Stoffdrückerplatte 17 beiderseits des Stoffbeugers 18 gegenseitig entsprechend höhenversetzt sind. Statt dessen kann die Stoffdrückerplatte 17 auch aus zwei Teilen bestehen, welche in Fig. 2 rechts bzw. links vom Stoffbeuger 18 angeordnet und jeweils gesondert senkrecht zur Stichplatte 12 beweglich sind. Die quer zur Vorschubrichtung 52 hin- und herschwingende Bogennadel 13 sticht nach jedem Vorschubschritt in die Etikettkante 6 bzw. 7 bzw. 8 bzw. 9 ein, welche durch die Nase 42 des Anschlags 26 vom Mantel 3 bzw. dessen Futter 2 abgebogen ist und an der Führungsleiste 43 des Anschlags 26 anliegt, die ebenfalls auf der der Bogennadel 13 bei deren Schwingung in der Einstichrichtung 14 zugewandten Seite des Anschlags 26 angeordnet ist. Nach dem Durchstechen der Etikettkante 6 bzw. 7 bzw. 8 bzw. 9 durchsticht die Bogennadel 13 das Futter 2 des Mantels 3 am Scheitel der durch den Stoffbeuger 18 bewirkten Auswölbung desselben, um also aus dem Futter 2 auszustechen, wie besonders deutlich aus Fig. 2 ersichtlich ist, und um schließlich wieder in Richtung des Pfeils 15 gemäß Fig. 2 zurückzuschwingen.When sewing each seam 10, the jacket 3 and the label 1 are gradually advanced in the usual manner in the direction of the arrow 52 (FIGS. 3 and 4), the resilient flexor 18 after each feed step by the jacket 3 by the by the in the slot 35 extending in the direction of advance 52 bulges and presses against the stop 26 thereof, namely into the groove 41 of the first arm 31 of the same, while the respective label edge 6 or 7 or 8 or 9 through the nose 42 of the first arm 31 of the stop 26 from the feed 2 of the jacket 3 is spread apart, which engages between the label edge 6 or 7 or 8 or 9 and the lining 2. The spring-loaded presser plate 17 with a passage opening 53 for the fabric flexor 18 and a foot 54 axially displaceably mounted in the fabric support arm 21 of the blind sewing machine presses the jacket 3 and the label 1 against the needle plate 12, as can be seen particularly clearly from FIG. 2, which also shows shows that the two sections of the presser plate 17 on both sides of the flexor 18 are mutually correspondingly offset in height. Instead, the presser plate 17 can also consist of two parts, which are arranged in FIG. 2 to the right or left of the flexor 18 and are each separately movable perpendicular to the throat plate 12. The arching needle 13, which swings back and forth transversely to the feed direction 52, sticks into the label edge 6 or 7 or 8 or 9 after each feed step, which is bent by the nose 42 of the stop 26 from the jacket 3 or its lining 2 and on the guide bar 43 of the stop 26 abuts, which is also arranged on the side of the stop 26 facing the curved needle 13 when it vibrates in the puncturing direction 14. After piercing the label edge 6 or 7 or 8 or 9, the arch needle 13 pierces the lining 2 of the jacket 3 at the apex of the bulge caused by the fabric flexor 18, in order to pierce the lining 2, as is particularly evident from FIG. 2 can be seen, and finally to swing back in the direction of arrow 15 according to FIG. 2.

Der Anschlag 26 der Stichplatte 12 wird mittels der Einstellschraube 36 so eingestellt, daß die Bogennadel 13 sicher in das Futter 2 des Mantels 3 einsticht, und zwar nur in das Futter 2 und nicht etwa auch in den Mantelaußenstoff 5. Die Führungsleiste 43 des Anschlags 26 wird so eingestellt, daß sich der jeweils gewünschte Abstand 55 jeder Naht 10 von der zugehörigen Etikettkante 6 bzw. 7 bzw. 8 bzw. 9 ergibt (Fig. 1).The stop 26 of the throat plate 12 is adjusted by means of the adjusting screw 36 so that the curved needle 13 sticks securely into the lining 2 of the jacket 3, and only into the lining 2 and not also into the outer jacket 5. The guide bar 43 of the stop 26 is set so that the desired distance 55 of each seam 10 results from the associated label edge 6 or 7 or 8 or 9 (Fig. 1).

Beim Drehen des Mantels 3 und des Etiketts 1 um einen rechten Winkel am Ende jeder der drei Nähte 10 entlang der ersten bzw. zweiten bzw. dritten Etikettkante 6 bzw. 7 bzw. 8 wird die Fixiernadel 46 zu Hilfe genommen. Wenn beispielsweise entsprechend der Darstellung in Fig. 4 bei dem in Fig. 2 veranschaulichten Annähen der dritten Kante 8 des Etiketts 1 an das Futter 2 des Mantels 3 der letzte Stich 56 der betreffenden Naht 10 vollendet worden ist und der Mantel 3 sowie das Etikett 1 anschließend um einen Schritt in Richtung des Pfeils 52 vorgeschoben worden sind, und zwar während der Schwingung der Bogennadel 13 in Richtung des Pfeils 15 nach Verlassen der Etikettkante 8 und ihrer folgenden Schwingung in Richtung des Pfeils 14 in Fig. 2 bis in die Stellung gemäß Fig. 4 kurz vor der Einstichstellung, wird die Blindnähmaschine stillgesetzt, der Druckluftzylinder 47 betätigt, um die Fixiernadel 46 zu bewegen, so daß sie mindestens in den Mantel 3 bzw. dessen Außenstoff 5 und Futter 2 an der Stelle des letzten Bogennadeleinstichs 57 einsticht, nämlich unterhalb des Punktes, wo die Bogennadel 13 das letzte Mal in die Etikettkante 8 eingestochen hat, und schließlich die Stoffdrückerplatte 17 mittels eines nicht dargestellten Druckluftzylinders von der Stichplatte 12 weg bewegt, um den Mantel 3 und das Etikett 1 freizugeben. Diese können dann vom Bedienungspersonal um die Fixiernadel 46 in Richtung des Pfeils 58 in Fig. 4 um einen rechten Winkel gedreht werden, um danach die vierte Etikettkante 9 an das Futter 2 des Mantels 3 anzunähen, deren Naht 10 ohne Unterbrechung an die Naht 10 der dritten Etikettkante 8 anschließt, zwischen denen der Nadelfaden 59 und der Spulenfaden 60 der Doppelsteppstich-Blindnähmaschine so verläuft, wie in Fig. 4 für die beiden Nähte 10 der zweiten Etikettkante 7 und der dritten Etikettkante 8 dargestellt.When turning the jacket 3 and the label 1 through a right angle at the end of each of the three seams 10 along the first or second or third label edge 6 or 7 or 8, the fixing needle 46 is used as an aid. If, for example, as shown in FIG. 4, when sewing the third edge 8 of the label 1 to the lining 2 of the jacket 3 illustrated in FIG. 2, the last stitch 56 of the relevant seam 10 has been completed and the jacket 3 and the label 1 have subsequently been advanced by one step in the direction of the arrow 52, namely during the oscillation of the curved needle 13 in the direction of the arrow 15 after leaving the label edge 8 and its subsequent oscillation in the direction of the arrow 14 in Fig. 2 to the position shown in FIG. 4 shortly before the puncture position, the blind sewing machine is stopped, the compressed air cylinder 47 is actuated to move the fixing needle 46 so that it at least in the jacket 3 or its outer fabric 5 and lining 2 the place of the last bow needle insertion 57, namely below the point where the bow needle 13 last pierced the label edge 8, and finally moved the presser plate 17 by means of a compressed air cylinder, not shown, away from the throat plate 12 to the jacket 3 and that Release label 1. These can then be rotated by the operating personnel around the fixing needle 46 in the direction of the arrow 58 in FIG. 4 by a right angle in order to then sew the fourth label edge 9 onto the lining 2 of the jacket 3, the seam 10 of which is without interruption to the seam 10 of the third label edge 8 connects, between which the needle thread 59 and the bobbin thread 60 of the lockstitch blind sewing machine runs as shown in FIG. 4 for the two seams 10 of the second label edge 7 and the third label edge 8.

Claims (10)

  1. Blind stitch sewing machine with a resiliently yielding fabric deflector (18) for bulging the material to be stitched, and which is advanced in steps, after each advance step through an opening (35) in the throat plate (12) into the arcuate path of movement of the curved needle (13) which swings back and forth transverse to the direction of feed (52) of the material and with a stop (26) arranged on the throat plate (12) for the bulged or deflected material, characterised in that for the subsequent sewing on of labels (1) having edges (6, 7, 8, 9) of varying thickness to finished garments (3) along the edges (6, 7, 8, 9) of the label in such a way that the curved needle (13) stitches into the edges (6, 7, 8, 9) of the label (1) which has been applied to the garment (3) and emerges from the garment (3), the stop (26) on the throat plate (12) is arranged so that the edge (6, 7, 8, 9) is spread away from the garment (3) at the stop (26) and only the garment (3) is pressed by the fabric deflector (18) against the stop (26).
  2. Blind stitch machine according to claim 1, characterised in that the stop (26) on the throat plate (12) has, on that side which is towards the needle (13) in its swing in the direction of stitching (14), a nose (42) for engaging between the edge (6, 7, 8, 9) of the label and the garment (3),
  3. Blind stitch machine according to claim 1 or 2, characterised in that the stop (26) on the throat plate (12) has a guide rail (43) for the edge (6, 7, 8, 9) of the label on that side which is towards the needle (13) in its swing in the stitching direction (14).
  4. Blind stitch machine according to claim 3, characterised in that the guide rail (43) on the stop (26) is adjustable to alter the spacing of the seam (55) from the edge (6, 7, 8, 9) of the label.
  5. Blind stitch machine according to claim 1, 2, 3 or 4, characterised in that the stop (26) on the throat plate (12) is adjustable to alter the depth of stitching of the needle (13) into the garment (3).
  6. Blind stitch machine according to one of the foregoing claims, for the subsequent sewing on of rectangular labels (1) having two folded-over parallel edges (6, 8) to finished garments (3) along all four edges (6, 7, 8, 9) of the label, characterised by a fixing needle (46) permitting rotation of the garment (3) and the label (1) through a right angle at the end of each of the three seams (10) along the first, second and third edges (6, 7, 8) of the label, this needle being actuated after the formation of the last stitch (56) of the current seam (10) and the subsequent advance of the garment (3) and the label (1) through one step, so that it penetrates into the garment (3) at the position of the last stitch (57) made by the curved needle.
  7. Blind stitch machine according to claim 6, characterised in that the fixing needle (46) is arranged next to the fabric deflector (18) which is orientated perpendicular to the throat plate (12) and moves back and forth linearly, and is provided on a carrier (48) which engages the fabric deflector (18) to stop the latter turning.
  8. Blind stitch machine according to claim 6 or 7, characterised in that the fixing needle (46) is actuated by a pneumatic cylinder (47).
  9. Blind stitch machine according to claim 6, 7 or 8, characterised by a spring-loaded fabric presser plate (17) for pressing the garment (3) and the label (1) against the throat plate (12) on that side of it which faces the fabric deflector (18), and which can be moved away from the throat plate (12) to allow the garment (3) and the label (1) to be turned after actuation of the fixing needle (46).
  10. Blind stitch machine according to claim 9, characterised in that the fabric presser plate (17) can be moved away from the throat plate (12) by a pneumatic cylinder.
EP91105154A 1990-05-14 1991-04-02 Blind stitch sewing machine Expired - Lifetime EP0457008B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4015465A DE4015465C1 (en) 1990-05-14 1990-05-14
DE4015465 1990-05-14

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EP0457008A2 EP0457008A2 (en) 1991-11-21
EP0457008A3 EP0457008A3 (en) 1992-04-15
EP0457008B1 true EP0457008B1 (en) 1994-08-31

Family

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EP91105154A Expired - Lifetime EP0457008B1 (en) 1990-05-14 1991-04-02 Blind stitch sewing machine

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US (1) US5178082A (en)
EP (1) EP0457008B1 (en)
JP (1) JPH04231091A (en)
AT (1) ATE110802T1 (en)
DE (1) DE4015465C1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0673577B2 (en) * 1991-03-25 1994-09-21 奈良ミシン工業株式会社 Cloth pressing device for rake stitch sewing machine
US5367967A (en) * 1993-02-01 1994-11-29 Lin; Teng-Chin Blind stitch sewing machine
EP1473397A1 (en) * 2003-04-28 2004-11-03 J. Strobel &amp; Söhne GmbH &amp; Co Blind stitch sewing machine
EP1591576A1 (en) * 2004-04-30 2005-11-02 J. Strobel & Söhne GmbH & Co. Blind stitch sewing machine
CN103975101B (en) 2011-10-17 2016-09-07 后续医疗股份有限公司 Knitting mechanism and method of using same
DE102011118813B3 (en) * 2011-11-11 2013-01-24 Steffen Pfeil Sewing device used for combining several layers of textile materials to form multilayer stack materials on inner sides of e.g. airplane, has eccentric drive unit that adjusts pivoting of support unit at needle holder in frames
DE102017126141A1 (en) * 2017-11-08 2019-05-09 Bader Gmbh & Co. Kg Seat cover, vehicle seat and method for producing a seat cover

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1552405A (en) * 1924-09-04 1925-09-08 Lewis Invisible Stitch Machine Presser foot
US2355904A (en) * 1940-06-17 1944-08-15 Us Blind Stitch Machine Corp Blind-stitch sewing machine
US2560186A (en) * 1949-04-02 1951-07-10 Singer Mfg Co Label feeding and holding means for sewing machines
DE1102535B (en) * 1959-07-15 1961-03-16 Oskar Strobel Fabric flexors for blind stitch sewing machines
JPS61220690A (en) * 1985-03-25 1986-09-30 佐藤精器株式会社 Lower dead point controller of cloth pressing pin
DE3515189C1 (en) * 1985-04-26 1986-11-06 J. Strobel & Söhne - GmbH & Co, 8000 München Chainstitch blindstitch sewing machine for sewing the sewing material point by point
DE3519849C1 (en) * 1985-06-03 1986-10-30 J. Strobel & Söhne - GmbH & Co, 8000 München Blindstitch sewing machine
DE3819017C1 (en) * 1988-06-03 1989-04-13 J. Strobel & Soehne - Gmbh & Co, 8000 Muenchen, De

Also Published As

Publication number Publication date
DE4015465C1 (en) 1991-06-27
JPH04231091A (en) 1992-08-19
US5178082A (en) 1993-01-12
EP0457008A3 (en) 1992-04-15
ATE110802T1 (en) 1994-09-15
EP0457008A2 (en) 1991-11-21

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