EP0496179B1 - Method for sewing a stitching pattern with a sewing machine - Google Patents

Method for sewing a stitching pattern with a sewing machine Download PDF

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Publication number
EP0496179B1
EP0496179B1 EP91810914A EP91810914A EP0496179B1 EP 0496179 B1 EP0496179 B1 EP 0496179B1 EP 91810914 A EP91810914 A EP 91810914A EP 91810914 A EP91810914 A EP 91810914A EP 0496179 B1 EP0496179 B1 EP 0496179B1
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EP
European Patent Office
Prior art keywords
stitch
thread portion
pattern
thread
sewing
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EP91810914A
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German (de)
French (fr)
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EP0496179A1 (en
Inventor
Lorenz Reber
Karl Nufer
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Fritz Gegauf AG
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Fritz Gegauf AG
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Publication of EP0496179A1 publication Critical patent/EP0496179A1/en
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    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B93/00—Stitches; Stitch seams
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B19/00—Programme-controlled sewing machines
    • D05B19/02—Sewing machines having electronic memory or microprocessor control unit
    • D05B19/04—Sewing machines having electronic memory or microprocessor control unit characterised by memory aspects
    • D05B19/10—Arrangements for selecting combinations of stitch or pattern data from memory ; Handling data in order to control stitch format, e.g. size, direction, mirror image

Definitions

  • the present invention relates to a method for sewing a stitch pattern on a sewing machine according to the preamble of patent claim 1.
  • German Patent 32 34 864 a method for sewing successive sewing patterns of a certain pattern length with a zigzag sewing machine is known. With this method it is possible to sew a sewing pattern made of several individual parts with diagonally running connecting threads in the area of a substantially square field determined by the pattern length within the overstitch width and stitch length range, which sewing pattern has a width which is a fraction of an overstitch width range .
  • the sample length is only a fraction of that with the Machine maximum achievable stitch length.
  • the end stitch of a sewing pattern forms the beginning stitch of the next pattern, which can be arranged next to, below or diagonally to the previous pattern. At least the last stitch of a pattern is set over the entire diagonal distance of the pattern.
  • border-like cross-stitch patterns can be produced.
  • Household sewing machines achieve stitch widths between 5.5 and 8 mm and stitch lengths between 4 and 6 mm depending on the design of the hook and transport system used in the machine. Even if a maximum stitch width of 8 mm and a stitch length of 6 mm is assumed, only single samples of a maximum of 4 mm can be produced in two rows, and only a maximum of 2.7 mm field size in three rows. However, even if the side length of a square field corresponds to the maximum stitch length of the machine, the achievable pattern size for cross stitches and similar patterns is in many cases insufficient.
  • a sewing machine which, by means of a coupling, causes the needle bar movement to be switched off without interrupting the transport of the sewing material.
  • This machine can be used to create stitches that are longer than the maximum feed length of the fabric pusher. Long stitched seams are used to temporarily connect two pieces of material to be connected with each other, the connection being subsequently released.
  • a sewing machine which contains a control with a comparison device which compares the size of the movement of an actuating shaft to be adjusted by a stepping motor before the movement is carried out with a predetermined maximum adjustment amount and prevents the formation of an intermediate stitch.
  • This control also makes it possible to form an intermediate stitch which coincides with the previously formed stitch or the needle bar can be uncoupled in the meantime.
  • the object of the present invention is to provide a method for sewing large stitch patterns on sewing machines, with which stitch patterns consisting of several sections can be produced, the individual thread sections of which exceed the maximum stitch width and stitch length of the machine without the span of the Individual threads are interrupted by stitches in between.
  • each thread section can be made by setting at least two stitches on the same or approximately can be achieved in the same place that an additional amount of thread is contained in the pattern, which increases the elasticity of the thread sections and thus prevents the material to be drawn together by the tensioned threads.
  • thread sections can be produced from a plurality of threads laid parallel and one above the other.
  • the last stitch of the first and any further thread sections is set in the middle of the section and the machine is then stopped with the needle lowered, so that the needle serves as the axis of rotation for the sewing material.
  • any angle for the length of the following thread section can be set relative to the preceding one or more.
  • the last thread section is sewn, the last stitch of the needle is set at one end of the thread section and the machine is then stopped. The position of this stitch can serve as a starting point for the formation of a next stitch pattern outside the first if several contiguous patterns are to be sewn.
  • the inserted needle can in turn serve as an axis of rotation for the alignment of the sewing material.
  • B is the maximum overstitch width range (short overstitch width) within which the needle of a sewing machine forms a stitch, ie can pierce the material
  • T denotes the pattern length sewn depending on the width of the individual pattern.
  • the pattern length T in FIG. 2 corresponds to the maximum feed length of the material feed conveyor.
  • the two sewing patterns M1 and M2 are made up of two parts of the overstitch width range B, in which the width of the smallest individual pattern M1 and M2 is therefore at most equal to half of the overstitch width range B.
  • the thread length mentioned corresponds to the maximum feed length T of the feed dog.
  • the neutral position N of the needle lies in the middle of the overstitch width range B.
  • To generate the pattern M1 starting from the neutral position at position A (beginning), the sequence 0 to 6 set, where "0" represents the initial stitch and "6" the final stitch E.
  • the thread sections f are set by appropriately deflecting the needle and pushing the sewing material forward and backward.
  • the first two threads between the stitches 0 and 1 extend diagonally over half of the maximum overstitch area; the third and fourth threads from the groove 2 to the groove 3, or from the groove 3 to the groove 4, still extend over a quarter of the maximum overstitch width range B to pass over the crossing point at the groove 3 to the groove 4 on the second leg or thread section f of the cross in pattern M1.
  • the next crosshair M2 can be formed by forming a further section of thread beginning at the end point E between the recesses 6 and 12.
  • this cross has two punctures at the intersection of the diagonals and contains only two threads running over the entire diagonals, while four threads only run over half the diagonals.
  • the formation of the pattern M3 provided with vertical or horizontal thread sections according to FIG. 2 takes place in a similar manner.
  • the sequence is again shown starting with A with the reference numerals 0-9 and ending with the final recess E. From FIG. 2 it is clearly evident that three recesses in the crossover area are necessary for the generation of the pattern M3.
  • These conventional stitch sequences consequently not only result in extremely small crosses, but also, due to multiple puncturing at the crossing point, also inconsistent and unsightly crosses. If more than two threads are laid per leg, the cross-stitches appear clumsy and the appearance of the crosses is further deteriorated.
  • FIG. 3 The production of a thread section, the length of which is greater than the overstitch width range B and the maximum feed step length T of the sewing machine, is shown in FIG. 3. Twice the length of the maximum fabric feed T is by omitting the stitch formation in point X, in the example shown in the middle of the thread section f, generated. Beginning at position A, several punctures are initially placed on site or approximately at location 1, 2, 3, which serve as binding stitches. The material to be sewn is then transported in feed direction V by two conveyor steps of length T.
  • the stitch formation does not take place and only takes place again at point D, where two stitch formations 4 and 5 are then preferably carried out on site before the reversing of the feed dog (feed direction R)
  • the material in turn is conveyed back to position A in two steps, each of length T, and the two stitch formations 6, 7 are made there.
  • the two steps described can be repeated and the stitches 8, 9 and 10, 11 set.
  • a double stitch formation 14, 15 takes place at point X and at the same time the sewing machine is inserted with the needle lowered, ie in the sewing material, stopped. Stopping the lowered needle means at the same time the end of a program step which can be entered in the microcomputer of the sewing machine and which permits an automatic sequence of the formation of a thread section.
  • the sewing material By rotating the sewing material around the axis of the inserted needle by an angle of 90 °, the sewing material is provided before forming a second thread section f running at right angles to the first thread section according to FIG. 2.
  • the needle is brought to the puncture site for stitch formations 16 and 17 by transporting the sewing material in the feed direction V by the amount T. This is followed by the formation of the thread sections between the recesses 16, 17 and 18, 19 in an alternating feed direction; 18.19 and 20.21; 20.21 and 22.23; 22.23 and 24.25; 24.25 and 26.27.
  • the stitch formations 26, 27 or at most two or three additional binding stitches 28, 29, 30 form the end E of the cross-stitch formed from two intersecting thread sections f, as shown as a whole in FIG. 9.
  • a stitch pattern with more than two crossing thread sections e.g. a star-shaped pattern according to FIG. 10 are formed.
  • the individual thread sections are retrieved from the machine's memory in the sequence shown in FIGS. 5, 6, 7 and 8 and are created one after the other by, after a thread section consisting of a bundle of threads has been completed, the material to be sewn by rotating it in the middle of the thread section The needle is rotated by an amount of 45 ° with four and 60 ° with three crossing thread sections.
  • FIG. 9 To produce a cross-stitch pattern according to FIG. 9, two basic patterns are required, namely the pattern according to FIG. 3, which begins at A and in which the needle is stopped in a lowered position at point X in the middle of the thread section f, and the pattern according to FIG. 4, at which the sewing process begins at point X and ends at E.
  • three basic patterns are required, namely the pattern according to FIGS. 3 and 4 for the production of the sections in FIGS. 5 and 8 and the additional pattern according to FIGS 7, in which the sewing process begins and ends at point X in the middle of the thread section f.
  • either cross-stitches consisting of the thread sections according to FIGS. 3 and 4 can be created individually or the last stitch can be used as the start of a new cross-stitch.
  • the pattern combinations 12 and 13 are produced from the thread sections according to FIGS. 3, 4, 6 and 8. 13 has a peculiarity with regard to the other combinations, namely that two of the four thread sections crossing at one point are designed to be substantially shorter. These shorter thread sections can be formed by reducing the feed length T of the feed dog.
  • the length of the thread sections f and the number of threads lying one above the other or next to one another in each thread section are preferably determined by the operator.
  • the number of threads of the individual thread sections can also be stored permanently in the machine.
  • the stitch length T is set on the machine in a known manner and the number of stitch formations to be avoided within the two end points A and E of the thread sections is determined.
  • the length of each thread section can therefore not only be influenced by the number of feed dog steps without intermediate thread formation, but also by the adjustable length of the individual feed dog steps. This is necessary in order to also produce thread sections with a length that is not equal to a plurality of conveyor steps with a maximum step length.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Sewing Machines And Sewing (AREA)

Description

Gegenstand der vorliegenden Erfindung ist ein Verfahren zum Nähen eines Stichmusters auf einer Nähmaschine gemäss Oberbegriff des Patentanspruches 1.The present invention relates to a method for sewing a stitch pattern on a sewing machine according to the preamble of patent claim 1.

Aus der deutschen Patentschrift 32 34 864 ist ein Verfahren zum Nähen von aufeinanderfolgenden Nähmustern bestimmter Musterlänge mit einer Zickzacknähmaschine bekannt. Mit diesem Verfahren ist es möglich, im Bereich eines durch die Musterlänge bestimmten, im wesentlichen quadratischen Feldes innerhalb des Ueberstichbreiten- und Stichlängenbereiches ein aus mehreren Einzelteilen gebildetes Nähmuster mit diagonal verlaufenden Verbindungsfäden zu nähen, welches Nähmuster eine Breite aufweist, welche einen Bruchteil eines Ueberstichbreitenbereiches beträgt. Die Musterlänge beträgt dabei auch nur einen Bruchteil der mit der Maschine maximal erreichbaren Stichlänge. Der Endstich eines Nähmusters bildet dabei den Anfangsstich des Folgemusters, welches neben, unter oder diagonal zum vorhergehenden Muster angeordnet werden kann. Mindestens der letzte Einstich eines Musters ist über die gesamte Diagonalstrecke des Musters gesetzt. Durch entsprechendes Kombinieren und Aneinanderfügen von verschiedenen Grundmustern sind bordürenartige Kreuzstichmuster herstellbar.
Haushaltnähmaschinen erreichen Ueberstichbreiten zwischen 5,5 und 8 mm und Stichlängen zwischen 4 und 6 mm je nach Ausbildung des in der Maschine verwendeten Greifer- und Transportsystems. Selbst wenn von einer maximalen Ueberstichbreite von 8 mm und einer Stichlänge von 6 mm ausgegangen wird, sind in Zweierreihen nur Einzelmuster von maximal 4 mm, in Dreierreihen sogar nur von maximal 2,7 mm Feldgrösse herstellbar.
Selbst wenn aber die Seitenlänge eines quadratischen Feldes der maximalen Stichlänge der Maschine entspricht, ist die erzielbare Mustergrösse für Kreuzstiche und ähnliche Muster in vielen Fällen ungenügend.From German Patent 32 34 864 a method for sewing successive sewing patterns of a certain pattern length with a zigzag sewing machine is known. With this method it is possible to sew a sewing pattern made of several individual parts with diagonally running connecting threads in the area of a substantially square field determined by the pattern length within the overstitch width and stitch length range, which sewing pattern has a width which is a fraction of an overstitch width range . The sample length is only a fraction of that with the Machine maximum achievable stitch length. The end stitch of a sewing pattern forms the beginning stitch of the next pattern, which can be arranged next to, below or diagonally to the previous pattern. At least the last stitch of a pattern is set over the entire diagonal distance of the pattern. By appropriately combining and joining different basic patterns, border-like cross-stitch patterns can be produced.
Household sewing machines achieve stitch widths between 5.5 and 8 mm and stitch lengths between 4 and 6 mm depending on the design of the hook and transport system used in the machine. Even if a maximum stitch width of 8 mm and a stitch length of 6 mm is assumed, only single samples of a maximum of 4 mm can be produced in two rows, and only a maximum of 2.7 mm field size in three rows.
However, even if the side length of a square field corresponds to the maximum stitch length of the machine, the achievable pattern size for cross stitches and similar patterns is in many cases insufficient.

Aus der deutschen Patentschrift 32 34 864 ist klar ersichtlich, dass ein Einzelmuster nicht grösser als die maximal erreichbare Stichlänge der Maschine sein kann. Ausserdem weisen die verschiedenen kombinierbaren Grundmuster, bedingt durch die Anordnung der Anfangs- und Endstiche, ein uneinheitliches Erscheinungsbild auf. Durch das Setzen von mehr als einem Stich im Kreuzungspunkt der beiden Kreuzbalken wird die Anzahl der über die ganze Länge der Balken verlaufenden Fäden drastisch vermindert und das typische Erscheinungsbild von Kreuzstichen, nämlich die ununterbrochen über die ganze Länge der Kreuzbalken verlaufenden, sich im Zentrum des Kreuzes überschneidenden Fäden, gestört.From German patent specification 32 34 864 it is clearly evident that a single pattern cannot be larger than the maximum achievable stitch length of the machine. In addition, the various combinable basic patterns, due to the arrangement of the start and end stitches, have a non-uniform appearance. By placing more than one stitch at the point of intersection of the two crossbars, the number of threads running along the entire length of the crossbars is drastically reduced and the typical appearance of crossstitching, namely those running continuously over the entire length of the crossbar, is in the center of the cross overlapping threads, disturbed.

Aus der US-A-4,138,955 ist weiter eine Nähmaschine bekannt, die mittels einer Kupplung, die das Abschalten der Nadelstangenbewegung bewirkt, ohne den Nähguttransport zu unterbrechen. Es lassen sich mit dieser Maschine Stiche erzeugen, deren Länge grösser ist als die maximale Vorschublänge des Stoffschiebers. Nähte mit langen Stichen dienen dazu, zwei zu verbindende Nähgutteile vorübergehend miteinander zu verbinden, wobei die Verbindung nachträglich wieder gelöst wird.From US-A-4,138,955 a sewing machine is also known which, by means of a coupling, causes the needle bar movement to be switched off without interrupting the transport of the sewing material. This machine can be used to create stitches that are longer than the maximum feed length of the fabric pusher. Long stitched seams are used to temporarily connect two pieces of material to be connected with each other, the connection being subsequently released.

Aus der DE-A1-3436366 ist zudem eine Nähmaschine bekannt, die eine Steuerung mit einer Vergleichseinrichtung enthält, welche die Grösse der durch einen Schrittmotor zu verstellenden Bewegung einer Stellwelle vor der Bewegungsausführung mit einem vorgegebenen maximalen Verstellbetrag vergleicht und die Bildung eines Zwischenstiches verhindert. Diese Steuerung ermöglicht es aber auch, einen Zwischenstich zu bilden, welcher mit dem vorher gebildeten Stich zusammenfällt oder die Nadelstange kann zwischenzeitlich ausgekuppelt werden. Mit diesen Massnahmen wird erreicht, dass genügend Zeit zur Verfügung steht, damit der Schrittmotor die erforderliche Schrittzahl zwischen benachbarten Stichen eines Musters auch bei einer den maximalen Verstellbetrag überschreitenden Verstellbewegung ausführen kann.From DE-A1-3436366 a sewing machine is also known which contains a control with a comparison device which compares the size of the movement of an actuating shaft to be adjusted by a stepping motor before the movement is carried out with a predetermined maximum adjustment amount and prevents the formation of an intermediate stitch. This control also makes it possible to form an intermediate stitch which coincides with the previously formed stitch or the needle bar can be uncoupled in the meantime. These measures ensure that sufficient time is available so that the stepper motor can carry out the required number of steps between adjacent stitches of a pattern even when the adjustment movement exceeds the maximum adjustment amount.

Das Ausschalten der Nadelstange zwischen zwei Vorschubbewegungen des Stoffschiebers dient lediglich dazu, Zeit für die Stoffschieberbewegungen zu gewinnen. Die Erzeugung von Stichen grosser Länge, d.h. Stichen, bei denen der Abstand zwischen den beiden Einstichlöchern grösser sind als die Vorschublänge des Nähgutschiebers, werden in der DE-A1-3436366 nicht beabsichtigt.Switching off the needle bar between two feed movements of the fabric pusher only serves to save time for the fabric pusher movements. The generation of long stitches, i.e. Stitches in which the distance between the two puncture holes is greater than the feed length of the material pusher are not intended in DE-A1-3436366.

Die Aufgabe der vorliegenden Erfindung besteht nun darin, ein Verfahren zum Nähen von grossen Stichmustern auf Nähmaschinen zu schaffen, mit welchen aus mehreren Abschnitten bestehende Stichmuster hergestellt werden können, deren einzelne Fadenabschnitte die maximale Überstichbreite und Stichlänge der Maschine wesentlich überschreiten, ohne dass die Spannweite der Einzelfäden durch dazwischenliegende Stiche unterbrocken wird.The object of the present invention is to provide a method for sewing large stitch patterns on sewing machines, with which stitch patterns consisting of several sections can be produced, the individual thread sections of which exceed the maximum stitch width and stitch length of the machine without the span of the Individual threads are interrupted by stitches in between.

Gelöst wird diese Aufgabe durch die Merkmale des Patentanspruches 1.This object is achieved by the features of patent claim 1.

An den beiden Enden jedes Fadenabschnittes kann durch Setzen von mindestens zwei Stichen an der gleichen oder an annähernd der gleichen Stelle erreicht werden, dass eine zusätzliche Fadenmenge im Muster enthalten ist, welche die Elastizität der Fadenabschnitte erhöht und damit ein Zusammenziehen des Nähgutes durch die gespannten Fäden verhindert.
Durch mehrmaliges Vor- und Rückwärtstransportieren des Nähgutes können Fadenabschnitte aus mehreren parallel über- und nebeneinandergelegten Fäden erzeugt werden.
Zur Bildung eines Musters mit sich symmetrisch oder punktsymmetrisch in einem beliebigen Winkel kreuzenden Fadenabschnitten wird der letzte Stich des ersten und allfälliger weiterer Fadenabschnitte, mit Ausnahme des letzten, in der Mitte des Abschnittes gesetzt und die Maschine darnach bei abgesenkter Nadel stillgesetzt, so dass die Nadel als Drehachse für das Nähgut dient. Bei stillgesetzter eingestochener Nadel kann jeder beliebige Winkel für die Läge des folgenden Fadenabschnittes relativ zu dem oder den vorhergehenden eingestellt werden.
Beim Nähen des letzten Fadenabschnittes wird der letzte Einstich der Nadel an einem Ende des Fadenabschnittes gesetzt und darnach die Maschine stillgesetzt. Die Position dieses Stichs kann als Ausgangspunkt für die Bildung eines nächsten ausserhalb des ersten liegenden Stichmusters dienen, wenn mehrere zusammenhängende Muster genäht werden sollen. Dabei kann die eingestochene Nadel wiederum als Drehachse für die Ausrichtung des Nähgutes dienen.At both ends of each thread section can be made by setting at least two stitches on the same or approximately can be achieved in the same place that an additional amount of thread is contained in the pattern, which increases the elasticity of the thread sections and thus prevents the material to be drawn together by the tensioned threads.
By repeatedly transporting the sewing material back and forth, thread sections can be produced from a plurality of threads laid parallel and one above the other.
To form a pattern with symmetrical or point symmetrical thread sections crossing at any angle, the last stitch of the first and any further thread sections, with the exception of the last, is set in the middle of the section and the machine is then stopped with the needle lowered, so that the needle serves as the axis of rotation for the sewing material. When the inserted needle is stopped, any angle for the length of the following thread section can be set relative to the preceding one or more.
When the last thread section is sewn, the last stitch of the needle is set at one end of the thread section and the machine is then stopped. The position of this stitch can serve as a starting point for the formation of a next stitch pattern outside the first if several contiguous patterns are to be sewn. The inserted needle can in turn serve as an axis of rotation for the alignment of the sewing material.

Anhand illustrierter Ausführungsbeispiele wird das erfindungsgemässe Verfahren näher erläutert. Es zeigen:

Figur 1
zwei in bekannter Weise hergestellte Kreuzstiche von halber Ueberstichbreite,
Figur 2
einen weiteren in bekannter Weise erzeugten Kreuzstich, dessen Balkenlänge der maximalen Stichlänge der Maschine entspricht,
Figur 3
einen aus fünf Spannfäden bestehenden, vertikal dargestellten Fadenabschnitt als Grundmuster für den ersten Kreuzbalken,
Figur 4
einen aus fünf Spannfäden bestehenden, horizontal dargestellten Fadenabschnitt als Grundmuster für den zweiten Kreuzbalken,
Figuren 5 bis 8
je einen Fadenabschnitt, erzeugt gemäss den Figuren 3 und 4, welche zusammengefügt ein achtstrahliges sternförmiges Muster ergeben,
Figur 9
ein aus den beiden Fadenabschnitten in den Figuren 3 und 4 erzeugter Kreuzstich,
Figuren 10 und 11
je eine aus einfachen Kreuzstichen zusammengesetzte Musterkombination,
Figur 12
eine Musterkombination aus sternförmigen Mustern und
Figur 13
eine Musterkombination aus sternförmigen Mustern mit unterschiedlicher Schenkellänge.
The method according to the invention is explained in more detail on the basis of illustrated exemplary embodiments. Show it:
Figure 1
two cross-stitches of half the overall stitch width produced in a known manner,
Figure 2
another cross-stitch produced in a known manner, the bar length of which corresponds to the maximum stitch length of the machine,
Figure 3
a vertically illustrated thread section consisting of five tension threads as a basic pattern for the first crossbar,
Figure 4
a horizontally represented thread section consisting of five tension threads as a basic pattern for the second crossbar,
Figures 5 to 8
one thread section each, produced according to FIGS. 3 and 4, which, when put together, result in an eight-beam star-shaped pattern,
Figure 9
a cross stitch produced from the two thread sections in FIGS. 3 and 4,
Figures 10 and 11
a pattern combination composed of simple cross-stitches,
Figure 12
a pattern combination of star - shaped patterns and
Figure 13
a pattern combination of star-shaped patterns with different leg lengths.

In den Figuren 1 und 2, welche den Stand der Technik gemäss der deutschen Patentschrift 32 34 864 darstellen, ist mit B der maximale Ueberstichbreitenbereich (kurz Ueberstichbreite), innerhalb dem die Nadel einer Nähmaschine einen Stich bildet, d.h. in das Nähgut einstechen kann, und mit T die in Abhängigkeit von der Breite des Einzelmusters genähte Musterlänge bezeichnet. Die Musterlänge T in Fig. 2 entspricht der maximalen Vorschublänge des Nähguttransporteurs. Die beiden Nähmuster M1 und M2 sind aus einer Zweiteilung des Ueberstichbreitenbereiches B aufgebaut, in der die Breite des kleinsten Einzelmusters M1 und M2 damit höchstens gleich der Hälfte des Ueberstichbreitenbereiches B ist.
Das um 45° gedrehte Nähmuster M3, dessen über die ganze Musterlänge bzw. -breite verlaufenden Fäden die gleiche Länge aufweisen wie die Diagonalfäden der Muster M1 und M2, dient zum Herstellen von Verbindungsreihen zwischen zusammengesetzten Musterreihen. Die erwähnte Fadenlänge entspricht der maximalen Vorschublänge T des Transporteurs.
Die neutrale Stellung N der Nadel liegt in der Mitte des Ueberstichbreitenbereiches B. Zur Erzeugung des Musters M1 wird, beginnend in der neutralen Stellung an der Stelle A (Anfang), die Stichfolge 0 bis 6 gesetzt, wobei "0" den Aufangsstich und "6" den Endstich E darstellt.
Durch entsprechendes Auslenken der Nadel und Vor- bzw. Rückschieben des Nähgutes mit dem Transporteur werden die Fadenabschnitte f gesetzt. Die ersten beiden Fäden zwischen den Einstichen 0 und 1 erstrecken sich diagonal über die Hälfte des maximalen Ueberstichbereiches; der dritte und vierte Faden vom Einstich 2 zum Einstich 3, bzw. vom Einstich 3 zum Einstich 4, erstrecken sich noch über einen Viertel des maximalen Ueberstichbreitenbereiches B, um über den Kreuzungspunkt beim Einstich 3 zum Einstich 4 auf dem zweiten Schenkel bzw. Fadenabschnitt f des Kreuzes in Muster M1 zu gelangen. Nach Fertigstellung des ersten Fadenkreuzes M1 kann durch Bilden eines am Endpunkt E beginnenden weiteren Fadenabschnittes zwischen den Einstichen 6 und 12 das nächste Fadenkreuz M2 gebildet werden. Dieses Kreuz weist im Gegensatz zum Fadenkreuz M1 zwei Einstiche im Kreuzungspunkt der Diagonalen auf und enthält nur zwei über die ganzen Diagonalen verlaufende Fäden, während vier Fäden nur je über die halben Diagonalen verlaufen.
Die Bildung des mit vertikalen, bzw. horizontal liegenden Fadenabschnitten versehenen Musters M3 gemäss Figur 2 erfolgt in ähnlicher Weise. Die Stichfolge ist wiederum, beginnend bei A mit den Bezugszeichen 0-9 dargestellt und endet beim Endeinstich E. Aus der Figur 2 ist deutlich ersichtlich, dass für die Erzeugung des Musters M3 drei Einstiche im Kreuzungsbereich notwendig sind.
Diese herkömmlichen Stichfolgen ergeben folglich nicht nur äusserst kleine, sondern zudem bedingt durch mehrfaches Einstechen im Kreuzungspunkt, auch uneinheitliche und unschöne Kreuze. Wenn mehr als zwei Fäden pro Schenkel gelegt werden, wirken die Kreuzstiche plump und das Erscheinungsbild der Kreuze wird weiter verschlechtert.In Figures 1 and 2, which represent the state of the art according to German Patent 32 34 864, B is the maximum overstitch width range (short overstitch width) within which the needle of a sewing machine forms a stitch, ie can pierce the material, and with T denotes the pattern length sewn depending on the width of the individual pattern. The pattern length T in FIG. 2 corresponds to the maximum feed length of the material feed conveyor. The two sewing patterns M1 and M2 are made up of two parts of the overstitch width range B, in which the width of the smallest individual pattern M1 and M2 is therefore at most equal to half of the overstitch width range B.
The sewing pattern M3 rotated by 45 °, the threads of which run over the entire length or width of the pattern have the same length as the diagonal threads of the patterns M1 and M2, is used to produce connecting rows between the combined rows of patterns. The thread length mentioned corresponds to the maximum feed length T of the feed dog.
The neutral position N of the needle lies in the middle of the overstitch width range B. To generate the pattern M1, starting from the neutral position at position A (beginning), the sequence 0 to 6 set, where "0" represents the initial stitch and "6" the final stitch E.
The thread sections f are set by appropriately deflecting the needle and pushing the sewing material forward and backward. The first two threads between the stitches 0 and 1 extend diagonally over half of the maximum overstitch area; the third and fourth threads from the groove 2 to the groove 3, or from the groove 3 to the groove 4, still extend over a quarter of the maximum overstitch width range B to pass over the crossing point at the groove 3 to the groove 4 on the second leg or thread section f of the cross in pattern M1. After completion of the first crosshair M1, the next crosshair M2 can be formed by forming a further section of thread beginning at the end point E between the recesses 6 and 12. In contrast to the crosshair M1, this cross has two punctures at the intersection of the diagonals and contains only two threads running over the entire diagonals, while four threads only run over half the diagonals.
The formation of the pattern M3 provided with vertical or horizontal thread sections according to FIG. 2 takes place in a similar manner. The sequence is again shown starting with A with the reference numerals 0-9 and ending with the final recess E. From FIG. 2 it is clearly evident that three recesses in the crossover area are necessary for the generation of the pattern M3.
These conventional stitch sequences consequently not only result in extremely small crosses, but also, due to multiple puncturing at the crossing point, also inconsistent and unsightly crosses. If more than two threads are laid per leg, the cross-stitches appear clumsy and the appearance of the crosses is further deteriorated.

Die Erzeugung eines Fadenabschnittes, dessen Länge grösser ist als der Ueberstichbreitenbereich B und die maximale Transporteurschrittlänge T der Nähmaschine, ist in Figur 3 dargestellt. Die zweifache Länge des maximalen Stoffvorschubes T wird durch Unterlassen der Stichbildung in Punkt X, im gezeigten Beispiel in der Mitte des Fadenabschnittes f, erzeugt. Beginnend an der Stelle A werden vorerst mehrere Einstiche an Ort oder annähernd an Ort 1,2,3 gesetzt, welche als Verheftstiche dienen. Hierauf wird das Nähgut in Vorschubrichtung V um zwei Transporteurschritte von der Länge T transportiert. Nach dem ersten Transportschritt, wenn sich die Nadel an der Stelle X befindet, unterbleibt die Stichbildung und erfolgt erst wieder an der Stelle D, wo dann vorzugsweise zwei Stichbildungen 4 und 5 an Ort vorgenommen werden, bevor durch Reversieren des Transporteurs (Vorschubrichtung R) das Nähgut wiederum in zwei Schritten von je der Länge T zurück an die Stelle A gefördert und dort die beiden Stichbildungen 6,7 vorgenommen werden. Für die Erzeugung eines Fadenabschnittes f, bestehend aus einem Mehrfach-Fadenbündel, können die beiden beschriebenen Schritte wiederholt und die Stiche 8,9 bzw. 10,11 gesetzt werden. Nach dem Setzen der Stiche 12,13 oder allenfalls bereits nach dem Setzen der Stiche 8,9 erfolgt nach dem Zurückfördern des Nähgutes um den Betrag T eine doppelte Stichbildung 14,15 an der Stelle X und gleichzeitig wird die Nähmaschine bei abgesenkter Nadel, d.h. eingestochen in das Nähgut, stillgesetzt. Das Stillsetzen der abgesenkten Nadel bedeutet gleichzeitig das Ende eines im Mikrocomputer der Nähmaschine eingebbaren Programmschrittes, welcher einen automatischen Ablauf der Bildung eines Fadenabschnittes erlaubt.The production of a thread section, the length of which is greater than the overstitch width range B and the maximum feed step length T of the sewing machine, is shown in FIG. 3. Twice the length of the maximum fabric feed T is by omitting the stitch formation in point X, in the example shown in the middle of the thread section f, generated. Beginning at position A, several punctures are initially placed on site or approximately at location 1, 2, 3, which serve as binding stitches. The material to be sewn is then transported in feed direction V by two conveyor steps of length T. After the first transport step, when the needle is at point X, the stitch formation does not take place and only takes place again at point D, where two stitch formations 4 and 5 are then preferably carried out on site before the reversing of the feed dog (feed direction R) The material in turn is conveyed back to position A in two steps, each of length T, and the two stitch formations 6, 7 are made there. To create a thread section f consisting of a multiple thread bundle, the two steps described can be repeated and the stitches 8, 9 and 10, 11 set. After setting the stitches 12, 13 or possibly already after setting the stitches 8, 9, after the material has been fed back, a double stitch formation 14, 15 takes place at point X and at the same time the sewing machine is inserted with the needle lowered, ie in the sewing material, stopped. Stopping the lowered needle means at the same time the end of a program step which can be entered in the microcomputer of the sewing machine and which permits an automatic sequence of the formation of a thread section.

Durch Drehen des Nähgutes um die Achse der eingestochenen Nadel um einen Winkel von 90° wird das Nähgut vor Bildung eines rechtwinklig zum ersten Fadenabschnitt verlaufenden zweiten Fadenabschnittes f gemäss Figur 2 bereitgestellt.By rotating the sewing material around the axis of the inserted needle by an angle of 90 °, the sewing material is provided before forming a second thread section f running at right angles to the first thread section according to FIG. 2.

Beginnend an der Stelle X, wo die letzten Stichbildungen 14,15 vorgenommen wurden, wird durch Transportieren des Nähgutes in Vorschubrichtung V um den Betrag T die Nadel zum Einstichsort für die Stichbildungen 16 und 17 gebracht. Darnach erfolgt in wechselnder Vorschubrichtung die Bildung der Fadenabschnitte zwischen den Einstichen 16,17 und 18,19; 18,19 und 20,21; 20,21 und 22,23; 22,23 und 24,25; 24,25 und 26,27. Die Stichbildungen 26,27 oder allenfalls zwei oder drei weitere Verheftstiche 28,29,30 bilden das Ende E des aus zwei sich kreuzenden Fadenabschnitten f gebildeten Kreuzstichs, wie er in Figur 9 als Gesamtes dargestellt ist.Starting at point X, where the last stitch formations 14, 15 were made, the needle is brought to the puncture site for stitch formations 16 and 17 by transporting the sewing material in the feed direction V by the amount T. This is followed by the formation of the thread sections between the recesses 16, 17 and 18, 19 in an alternating feed direction; 18.19 and 20.21; 20.21 and 22.23; 22.23 and 24.25; 24.25 and 26.27. The stitch formations 26, 27 or at most two or three additional binding stitches 28, 29, 30 form the end E of the cross-stitch formed from two intersecting thread sections f, as shown as a whole in FIG. 9.

Analog zur Bildung eines aus zwei sich rechtwinklig kreuzenden Fadenabschnitten f bestehenden Kreuzstiches kann ein Stichmuster mit mehr als zwei sich kreuzenden Fadenabschnitten, z.B. ein sternförmiges Muster gemäss Fig. 10, gebildet werden. Dazu werden die einzelnen Fadenabschnitte in der Reihenfolge gemäss den Figuren 5,6,7 und 8 aus dem Speicher der Maschine abgerufen und nacheinander erstellt, indem jeweils nach Fertigstellung eines aus einem Fadenbündel bestehenden Fadenabschnittes das Nähgut durch Drehen um die in der Mitte des Fadenabschnittes eingestochene Nadel um einen Betrag von 45° bei vier und um 60° bei drei sich kreuzenden Fadenabschnitten gedreht wird.Analogous to the formation of a cross stitch consisting of two crossing thread sections f at right angles, a stitch pattern with more than two crossing thread sections, e.g. a star-shaped pattern according to FIG. 10 are formed. For this purpose, the individual thread sections are retrieved from the machine's memory in the sequence shown in FIGS. 5, 6, 7 and 8 and are created one after the other by, after a thread section consisting of a bundle of threads has been completed, the material to be sewn by rotating it in the middle of the thread section The needle is rotated by an amount of 45 ° with four and 60 ° with three crossing thread sections.

Zur Herstellung eines Kreuzstichmusters gemäss Figur 9 sind zwei Grundmuster erforderlich, nämlich das Muster gemäss Figur 3, welches bei A beginnt und bei welchem die Nadel im Punkt X in der Mitte des Fadenabschnittes f in abgesenkter Läge stillgesetzt wird, und das Muster gemäss Figur 4, bei welchem der Nähvorgang im Punkt X beginnt und bei E beendet wird.To produce a cross-stitch pattern according to FIG. 9, two basic patterns are required, namely the pattern according to FIG. 3, which begins at A and in which the needle is stopped in a lowered position at point X in the middle of the thread section f, and the pattern according to FIG. 4, at which the sewing process begins at point X and ends at E.

Für die Herstellung eines sternförmigen Musters, wie es beispielsweise in der Musterkombination in Figur 12 enthalten ist, sind drei Grundmuster erforderlich, nämlich die Muster gemäss den Figuren 3 und 4 zur Herstellung der Abschnitte in Figur 5 und 8 und das zusätzliche Muster gemäss Figur 6 und 7, bei welchem der Nähvorgang in Punkt X in der Mitte des Fadenabschnittes f beginnt und auch endet.For the production of a star-shaped pattern, as is contained, for example, in the pattern combination in FIG. 12, three basic patterns are required, namely the pattern according to FIGS. 3 and 4 for the production of the sections in FIGS. 5 and 8 and the additional pattern according to FIGS 7, in which the sewing process begins and ends at point X in the middle of the thread section f.

Zur Erzeugung von Musterkombinationen gemäss den Figuren 10 und 11 können entweder Kreuzstiche bestehend aus den Fadenabschnitten gemäss den Figuren 3 und 4 einzeln erzeugt oder der letzte Einstich jeweils als Beginn eines neuen Kreuzstiches benutzt werden. Die Musterkombinationen gemäss den Figuren 12 und 13 werden aus den Fadenabschnitten gemäss den Figuren 3,4,6 und 8 hergestellt. Dabei weist Figur 13 bezüglich der übrigen Kombinationen eine Besonderheit auf, nämlich dass zwei der vier sich jeweils in einem Punkt kreuzenden Fadenabschnitte wesentlich kürzer ausgebildet sind. Die Bildung dieser kürzeren Fadenabschnitte kann durch eine Reduktion der Vorschublänge T des Transporteurs erfolgen.To create pattern combinations according to FIGS. 10 and 11, either cross-stitches consisting of the thread sections according to FIGS. 3 and 4 can be created individually or the last stitch can be used as the start of a new cross-stitch. The pattern combinations 12 and 13 are produced from the thread sections according to FIGS. 3, 4, 6 and 8. 13 has a peculiarity with regard to the other combinations, namely that two of the four thread sections crossing at one point are designed to be substantially shorter. These shorter thread sections can be formed by reducing the feed length T of the feed dog.

Die Festlegung der Länge der Fadenabschnitte f sowie der Anzahl der über- oder nebeneinanderliegenden Fäden in jedem Fadenabschnitt erfolgt vorzugsweise durch die Bedienungsperson. Die Fadenzahl der einzelnen Fadenabschnitte kann aber auch fest in der Maschine gespeichert sein. Dazu wird an der Maschine in bekannter Weise die Stichlänge T eingestellt und die Anzahl der zu unterlassenden Stichbildungen innerhalb der beiden Endpunkte A und E der Fadenabschnitte bestimmt. Die lange jedes Fadenabschnittes kann folglich nicht nur durch die Anzahl der Transporteurschritte ohne dazwischenliegende Fadenbildung, sondern auch durch die einstellbare Länge der einzelnen Transporteurschritte beeinflusst werden. Dies ist nötig, um auch Fadenabschnitte mit einer Länge zu erzeugen, die ungleich einer Mehrzahl von Transporteurschritten mit maximaler Schrittlänge ist.The length of the thread sections f and the number of threads lying one above the other or next to one another in each thread section are preferably determined by the operator. The number of threads of the individual thread sections can also be stored permanently in the machine. For this purpose, the stitch length T is set on the machine in a known manner and the number of stitch formations to be avoided within the two end points A and E of the thread sections is determined. The length of each thread section can therefore not only be influenced by the number of feed dog steps without intermediate thread formation, but also by the adjustable length of the individual feed dog steps. This is necessary in order to also produce thread sections with a length that is not equal to a plurality of conveyor steps with a maximum step length.

Claims (8)

  1. Method of sewing a pattern of stitches on a sewing machine, wherein, in order to produce each pattern, comprising at least one thread portion (f) situated between two recesses forming the end points, the feeder of the sewing machine performs at least two advancing steps and the stitch is formed between the subsequent advancing steps, characterised in that, when producing a pattern comprising a plurality of thread portions and having intersecting threads, the last stitch of the first thread portion (f) is placed in the centre (x) of the thread portion (f), and in that the machine is automatically stopped with a lowered needle after the last stitch, so that the needle can serve as a rotary axle for the sewing material.
  2. Method according to claim 1, characterised in that, when fixing the ends of the thread portion, at least two stitches at a time are formed at the same location, or approximately the same location.
  3. Method according to one of claims 1 or 2, characterised in that each thread portion comprises a plurality of threads placed adjacent or above one another as a result of the sewing material being fed forwardly and backwardly.
  4. Method according to one of claims 1 to 3, characterised in that the first stitch of the additional thread portions (f), which follow the first thread portion (f), is placed in the centre (x) of the thread portion (f), and in that, apart from with the finally sewn thread portion (f), the machine is in turn stopped with a stitch placed in the centre (x) of the thread portion (f) and with a lowered needle.
  5. Method according to one of claims 1 to 4, characterised in that the first stitch of the finally sewn thread portion (f) is in turn placed in the centre (x) of the thread portion (f), while the last stitch of this thread portion (f), which also forms the last stitch of the pattern of stitches, is placed at an end point (E) of the thread portion (f).
  6. Method according to claim 5, characterised in that the last insertion for the finally sewn thread portion (f) of a pattern of stitches forms the starting position for the first insertion for the first thread portion (f) of a new pattern of stitches.
  7. Method according to one of claims 1 to 6, characterised in that the number of threads contained in the individual thread portions (f) and the length of the thread portions (f), which depends on the set stitch length of the machine and the number of omitted stitches, are determinable by the operator.
  8. Method according to one of claims 1 to 7, characterised in that the successive formation of the thread portions (f) is automatically effected as a result of being controlled by the electronics of the sewing machine, the needle at the end of each thread portion remaining stationary until the starter of the machine is actuated again by the operator.
EP91810914A 1991-01-24 1991-11-25 Method for sewing a stitching pattern with a sewing machine Expired - Lifetime EP0496179B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH201/91A CH682754A5 (en) 1991-01-24 1991-01-24 A method for sewing a stitch pattern on a sewing machine.
CH201/91 1991-01-24

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EP0496179A1 EP0496179A1 (en) 1992-07-29
EP0496179B1 true EP0496179B1 (en) 1995-04-19

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EP (1) EP0496179B1 (en)
JP (1) JPH067564A (en)
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DE3272083D1 (en) * 1982-03-31 1986-08-28 Ibm Deutschland Reactor for reactive ion etching, and etching process
US6718895B1 (en) 2001-08-30 2004-04-13 Terrence M. Fortuna Method for producing a raised applique on a substrate and articles made therefrom
WO2004072349A2 (en) * 2003-02-12 2004-08-26 Koerner Ralph J Quilting method and apparatus

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US4123983A (en) * 1977-11-16 1978-11-07 The Singer Company Retractable needle basting mechanism
JPS581954B2 (en) * 1977-12-12 1983-01-13 アイシン精機株式会社 Electronic sewing machine pattern signal generator
US4138955A (en) * 1978-02-28 1979-02-13 The Singer Company Stitch length control for electronic sewing machine
US4177744A (en) * 1978-07-28 1979-12-11 The Singer Company Digital override control of bight and feed in a sewing machine
US4309950A (en) * 1979-11-30 1982-01-12 Meistergram Inc. Embroidery machine
US4391215A (en) * 1981-09-18 1983-07-05 The Singer Company Self compensating optoelectronic ply and edge detector for sewing machine
DE3234864C2 (en) * 1982-09-21 1986-04-03 Dorina Nähmaschinen GmbH, 7500 Karlsruhe Method of sewing successive sewing patterns on a zigzag sewing machine
JPS59114882U (en) * 1983-01-20 1984-08-03 蛇の目ミシン工業株式会社 Control amount switching mechanism in electronic sewing machines
JPS60176684A (en) * 1984-02-22 1985-09-10 蛇の目ミシン工業株式会社 Feed system of sewing machine
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JP2649802B2 (en) * 1987-04-30 1997-09-03 蛇の目ミシン工業株式会社 Elongator pattern length display device of sewing machine

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US5168822A (en) 1992-12-08
JPH067564A (en) 1994-01-18
EP0496179A1 (en) 1992-07-29
DE59105264D1 (en) 1995-05-24
CH682754A5 (en) 1993-11-15

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