EP0717137A1 - Presser for a multi-needle quilting machine - Google Patents

Presser for a multi-needle quilting machine Download PDF

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Publication number
EP0717137A1
EP0717137A1 EP95810758A EP95810758A EP0717137A1 EP 0717137 A1 EP0717137 A1 EP 0717137A1 EP 95810758 A EP95810758 A EP 95810758A EP 95810758 A EP95810758 A EP 95810758A EP 0717137 A1 EP0717137 A1 EP 0717137A1
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EP
European Patent Office
Prior art keywords
pressure foot
needle
pressure
guide rod
quilted
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP95810758A
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German (de)
French (fr)
Inventor
Hans Zeller
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.)
Gateway Textiles Ltd
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Perfecta Schmid AG
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Filing date
Publication date
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Publication of EP0717137A1 publication Critical patent/EP0717137A1/en
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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B11/00—Machines for sewing quilts or mattresses
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B29/00—Pressers; Presser feet
    • D05B29/02—Presser-control devices

Definitions

  • the invention relates to a pressing device for a multi-needle quilting machine according to the preamble of patent claim 1.
  • Multi-needle quilting machines are used for quilting mattress pads and the like and have a large number of needles arranged side by side and one behind the other in any pattern, which are synchronously inserted into the quilted material by a common drive and, after taking over the lower thread and pulling the lower thread into the sewing material, be led out of this.
  • Modern multi-needle quilting machines can perform 1200 stitches per minute. So that the quilted material is not lifted by the needles moving out of the quilted material after the puncture, it is known to attach pre-compression plates in front of the needle bars which press the quilted material onto the quilted material table.
  • the pressure of the lasts must be so great that the quilted material is not or only slightly raised by the needles and that the longitudinal and transverse transport of the quilted material below the pre-compression plates is guaranteed at the same time. It is also known to lift the precompression plates from the quilted material after the needles emerge from the quilted material by means of a separate drive specially provided for this purpose.
  • pre-compression plates are located at a relatively large distance from the needles, so that the quilted material can be raised a little despite the presence of the pre-compression plates, and on the other hand, the means for lifting the pre-compression plates in time with the needle strokes require a complex and to generate the necessary contact pressure stable mechanics.
  • the known pressing means on quilting machines are also not able to adapt to differences in thickness in the quilted material.
  • the object of the invention is to provide a pressing device which presses the quilted material against the quilted goods table in the immediate vicinity of the needle insertion point, holds the quilted material pressed onto the quilted material table during the needle exit, and after the needle exits the quilted material Press releases.
  • the pressing device With the pressing device according to the invention, it is possible to clamp the quilted goods on the quilted goods table shortly before the needle starts to be inserted and hold them there until the needle has completely left the quilted goods. This ensures that the lower thread can be pulled completely into the quilted material by the upper thread. Furthermore, the quilted material is immediately after the end of each stitch for the longitudinal or Cross transport released.
  • the pressure foot that completely or partially surrounds the needle protects the tip of the needle during the transport of the quilted goods, even if the quilted material touches the sole of the pressure foot due to its swelling filling. The pressure foot hurries ahead of the needle during lowering until the desired pressing force is built up on the quilted material. Only then will the needle begin to pierce the quilted fabric.
  • the depth of penetration of the pressure foot into the quilted fabric can be precisely adjusted and adjusted; it also adapts to the thickness of the filling at the puncture site.
  • reference number 3 shows a multi-needle quilting machine with a frame 4, a sewing material table 15 for the sewing material 41, which can be pulled off from a sewing material supply roll 8 in front of the quilting machine 3 via the sewing material table 15.
  • the needle holder rod 7 with the needles 1 is arranged above the sewing material table 15 and is displaceably mounted on vertical guides 10.
  • the needle holder rod 7 is connected to the frame 4 by pairs of knee and lever pairs 18 which interact.
  • the knee joint lever pairs 18 consist of two knee joint levers 20, the knee joints 22 of which are connected to one another by a push rod 24.
  • a multi-needle quilting machine 3 of large width instead of a single needle holder rod 7 there are a plurality of needle holder rods 7, preferably of the same length, which are each suspended on the frame 4 with one or more pairs of knee joints and levers 18.
  • the push rod 24 can extend over the entire width of the machine 3 or can be composed of several sections corresponding to the length of the individual needle holder rods 7.
  • 1 shows a crank drive 26 on the right side of the multi-needle quilting machine 3, which is connected to the push rod 24 by means of a crank rod 28.
  • the needle holder rod 7 is approximately in the highest possible position in FIG. the needles 1 are approximately at their uppermost reversal point.
  • each needle holder rod 7 extends over a portion of the width of the multi-needle quilting machine 3 and carries a plurality of identical needles 1.
  • the needle holder rod 7 is moved in the vertical direction by the amount of the needle stroke by the drive 26 indicated in FIG. A preferred drive is described in Swiss Patent Application No. 3785 / 94-2 dated December 14, 1994.
  • the guide rod 11 is fastened as a vertical guide for each needle 1 and guides a pressure foot 13 perpendicular to the horizontal quilting table 15.
  • the pressure foot 13 has at its lower end a preferably dome-shaped pressure head 17, in the center of which there is a bore 19 is inserted for the passage of the needle 1.
  • the pressing head 17 is guided longitudinally essentially without play by the guide sleeve 21 surrounding the guide rod 11.
  • a guide bore 23 is provided in the guide sleeve 21, which is penetrated by an auxiliary guide rod 25.
  • a stop 27 with an adjusting screw 29 can be seated on the auxiliary guide rod 25, with which the stop 27 on the auxiliary guide rod 25 can be fixed.
  • a damping element 31 is placed on the upper shoulder of the stop 27, in the present example it is an O-ring.
  • a stop lug 33 projects so far to the left that its end comes to rest over the vertical travel range of the needle holder rod 7.
  • An elastic buffer element 35 is also attached to the nose 33, which dampens the shock and reduces noise when it comes into contact with the needle holder rod 7.
  • a spring-holding element 37 which is displaceable and adjustable on the latter and by means of which the pretension of a helical spring 39 which wraps around the guide rod 11 can be adjusted.
  • the helical spring 39 rests on the one hand on the top of the guide sleeve 21 and on the other hand on the underside of the spring holding element 37.
  • the quilted material 41 lies between the dome-shaped underside of the pressing head 17 and the surface of the sewing or quilting material table 15.
  • this consists of a cotton core 43 and a lower material 45 and an outer material 47.
  • a pre-compression plate 51 is arranged parallel to and above the sewing material table 15, the distance of which from the surface of the sewing material table 15 can be adjusted and which has a raised edge 49 on the inlet side.
  • recesses 52 are made in the pre-compression plate 51, through which the pressure heads 17 can be passed with play.
  • the compression plate 51 carries in the present example both the guide rods 11 and also the auxiliary guide rods 25 with the pressure feet 13 slidably attached thereto. The attachment is carried out with screws 54, the lower ends of the auxiliary guide rods 25 also engaging in a centering hole 56 in the surface of the pre-compression plate 51 for centering purposes.
  • the drive leads the needle holder rod 7 together with the needles 1 vertically downward.
  • the tip 53 of the needle 1 is always protected within the bore 21 in the pressure head 17.
  • the pressure foot 13 with the stop lug 33, resting on the needle holder rod 7 at the top follows the downward movement due to the prestressing of the spring 39.
  • the dome-shaped underside of the pressing head 17 begins to press on the outer fabric 47 after the latter has passed through the recess 52 in the pre-compression plate 51, the movement of the pressing foot 13 is opposed to resistance. This resistance depends on the elasticity of the cotton core 43 and the thickness thereof.
  • the successively increasing resistance causes the quilting material 41 to be compressed and thus the stop lug 33 to be pulled off Needle holder rod 7 is lifted off.
  • the downward movement of the pressure foot 13 can be limited by the stop 27 in order to adjust the thickness of the quilted material 41 in the region of the seam to be produced, if desired. Since each pressure foot 13 is individually adjustable, a topographically extending pattern can be generated in this way along the row of needles.
  • the needle 1 and the pressure foot 13 move relative to each other.
  • the latter is held in place by the pressing head 17.
  • This state - shown in FIG. 4 - is maintained until the needle holder rod 7, which moves upward again after the puncture, strikes the stop lug 33 or the buffer element 35 attached to the stop lug 33, thereby lifting the pressure foot 13 off the quilted material 41 .
  • the spring 39 is compressed.
  • the needle tip 53 is already inside the bore 19.
  • the needle 1 pulls the upper thread with the lower thread taken over below the quilted material table 15 (both threads not shown) into the quilting material 41. Thereafter, the pressing head 17 is lifted off the quilted material 41 in synchronism with the upward movement of the needle 1. The situation is again as shown in FIG. 2 and allows the start of a new puncture and the shifting of the material 41 in front of it .

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

Abstract

A pressure foot for a multi-needle lockstitch sewing machine has a holder which effects the vertical motion of the several needles held, a post to guide the foot vertically, a means for exerting foot pressure on the surface of the item (41) to be sewn and a preceding main plate (51). The pressure foot (13) is led through an opening (52) in the plate under the action of a spring (39) acting from above to press the item onto the machine bed (15) in the region where the needle is putting in stitches. When the needle (1) is out of the item the foot can be lifted by the bar (7) carrying the needle.

Description

Gegenstand der Erfindung ist eine Anpressvorrichtung für eine Mehrnadel-Steppmaschine gemäss Oberbegriff des Patentanspruches 1.The invention relates to a pressing device for a multi-needle quilting machine according to the preamble of patent claim 1.

Mehrnadel-Steppmaschinen werden zum Steppen von Matratzenauflagen und dergleichen eingesetzt und weisen eine Vielzahl von neben- und hintereinander in beliebigem Muster angeordneten Nadeln auf, die durch einen gemeinsamen Antrieb synchron ins Steppgut eingeführt und, nach Übernahme des Unterfadens und Einzug des Unterfadens in das Nähgut, aus diesem herausgeführt werden. Moderne Mehrnadel-Steppmaschinen können 1200 Stiche pro Minute durchführen. Damit das Steppgut durch die nach dem Einstich wieder aus dem Steppgut ausfahrenden Nadeln nicht angehoben wird, ist es bekannt, Vorkomprimierplatten vor den Nadelleisten anzubringen, die das Steppgut auf den Steppguttisch pressen. Die Anpresskraft der Leisten muss so gross sein, dass das Steppgut durch die Nadeln nicht oder nur wenig angehoben wird und dass gleichzeitig der Längs- und Quertransport des Steppgutes unterhalb der Vorkomprimierplatten gewährleistet ist. Es ist auch bekannt, die Vorkomprimierplatten nach dem Austritt der Nadeln aus dem Steppgut durch einen eigenen, speziell dafür vorgesehenen Antrieb vom Steppgut abzuheben. Die über die gesamte Breite der Steppmaschine verlaufenden Vorkomprimierplatten liegen zum einen in einem verhältnismässig grossen Abstand zu den Nadeln, so dass das Steppgut trotz Vorhandenseins der Vorkomprimierplatten etwas angehoben werden kann, und zum anderen benötigen die Mittel zum Anheben der Vorkomprimierplatten im Takt der Nadelhübe eine aufwendige und zur Erzeugung der notwendigen Anpresskraft auch sehr stabil aufgebaute Mechanik. Die bekannten Anpressmittel auf Steppmaschinen sind auch nicht in der Lage, sich an Dickenunterschiede im Steppgut anzupassen.Multi-needle quilting machines are used for quilting mattress pads and the like and have a large number of needles arranged side by side and one behind the other in any pattern, which are synchronously inserted into the quilted material by a common drive and, after taking over the lower thread and pulling the lower thread into the sewing material, be led out of this. Modern multi-needle quilting machines can perform 1200 stitches per minute. So that the quilted material is not lifted by the needles moving out of the quilted material after the puncture, it is known to attach pre-compression plates in front of the needle bars which press the quilted material onto the quilted material table. The pressure of the lasts must be so great that the quilted material is not or only slightly raised by the needles and that the longitudinal and transverse transport of the quilted material below the pre-compression plates is guaranteed at the same time. It is also known to lift the precompression plates from the quilted material after the needles emerge from the quilted material by means of a separate drive specially provided for this purpose. The ones that run across the entire width of the quilting machine On the one hand, pre-compression plates are located at a relatively large distance from the needles, so that the quilted material can be raised a little despite the presence of the pre-compression plates, and on the other hand, the means for lifting the pre-compression plates in time with the needle strokes require a complex and to generate the necessary contact pressure stable mechanics. The known pressing means on quilting machines are also not able to adapt to differences in thickness in the quilted material.

Die Aufgabe der Erfindung besteht nun darin, eine Anpressvorrichtung zu schaffen, die im unmittelbaren Bereich des Einstichortes der Nadel das Steppgut gegen den Steppguttisch presst, das Steppgut während des Austrittes der Nadel auf dem Steppguttisch angepresst hält und nach dem Austritt der Nadel aus dem Steppgut die Pressung aufhebt.The object of the invention is to provide a pressing device which presses the quilted material against the quilted goods table in the immediate vicinity of the needle insertion point, holds the quilted material pressed onto the quilted material table during the needle exit, and after the needle exits the quilted material Press releases.

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

Es gelingt mit der erfindungsgemässen Anpressvorrichtung, das Steppgut jeweils kurz vor Beginn des Einstiches der Nadel auf dem Steppguttisch festzuklemmen und gerade solange festzuhalten, bis die Nadel das Steppgut vollständig verlassen hat. Damit wird erreicht, dass der Unterfaden vom Oberfaden vollständig in das Steppgut hineingezogen werden kann. Im weiteren wird das Steppgut sofort nach Beendigung jedes Stiches für den Längs- oder Quertransport freigegeben. Der die Nadel ganz oder teilweise umgebende Anpressfuss schützt die Spitze der Nadel während des Transportes des Steppgutes, auch wenn das Steppgut durch seine quellende Füllung die Sohle des Anpressfusses berührt. Der Anpressfuss eilt der Nadel während des Absenkens solange voraus, bis die gewünschte Presskraft auf das Steppgut aufgebaut ist. Erst dann beginnt die Nadel, in das Steppgut einzustechen. Die Eindringtiefe des Anpressfusses in das Steppgut kann exakt ein- und verstellt werden; sie passt sich zudem der Dicke der Füllung am Einstichort an.With the pressing device according to the invention, it is possible to clamp the quilted goods on the quilted goods table shortly before the needle starts to be inserted and hold them there until the needle has completely left the quilted goods. This ensures that the lower thread can be pulled completely into the quilted material by the upper thread. Furthermore, the quilted material is immediately after the end of each stitch for the longitudinal or Cross transport released. The pressure foot that completely or partially surrounds the needle protects the tip of the needle during the transport of the quilted goods, even if the quilted material touches the sole of the pressure foot due to its swelling filling. The pressure foot hurries ahead of the needle during lowering until the desired pressing force is built up on the quilted material. Only then will the needle begin to pierce the quilted fabric. The depth of penetration of the pressure foot into the quilted fabric can be precisely adjusted and adjusted; it also adapts to the thickness of the filling at the puncture site.

Anhand eines illustrierten Ausführungsbeispieles wird die Erfindung im folgenden näher beschrieben. Es zeigen:

Figur 1
eine schematische Vorderansicht einer MehrfachSteppmaschine,
Figur 2
eine Seitenansicht eines Anpressfusses und der mit diesem zusammenwirkenden Nadel (angehobene Stellung für den Steppguttransport),
Figur 3
eine Seitenansicht eines Anpressfusses und der mit diesem zusammenwirkenden Nadel (bei teilweise abgesenkter Nadel und vollständig abgesenktem Anpressfuss),
Figur 4
eine Seitenansicht eines Anpressfusses und der mit diesem zusammenwirkenden Nadel (bei ins Steppgut eingestochener Nadel).
The invention is described in more detail below with the aid of an illustrated embodiment. Show it:
Figure 1
1 shows a schematic front view of a multiple quilting machine,
Figure 2
a side view of a pressure foot and the needle interacting with it (raised position for the transport of quilted goods),
Figure 3
a side view of a pressure foot and the needle interacting with it (with the needle partially lowered and the pressure foot fully lowered),
Figure 4
a side view of a pressure foot and the needle interacting with it (with needle inserted into the quilted material).

In Figur 1 ist mit Bezugszeichen 3 eine Mehrnadel-Steppmaschine mit einem Gestell 4, einem Nähguttisch 15 für das Nähgut 41, welches von einer Nähgut-Vorratsrolle 8 vor der Steppmaschine 3 über den Nähguttisch 15 abziehbar ist, dargestellt. Über dem Nähguttisch 15 ist die Nadelhalterstange 7 mit den Nadeln 1 angeordnet und an Vertikalführungen 10 verschiebbar gelagert. Die Nadelhalterstange 7 ist mit dem Gestell 4 durch paarweise zusammenwirkende Kniegelenk-Hebelpaare 18 verbunden. Die Kniegelenk-Hebelpaare 18 bestehen aus zwei Kniegelenkhebeln 20, deren Kniegelenke 22 durch eine Schubstange 24 miteinander verbunden sind. Bei einer Mehrnadel-Steppmaschine 3 grosser Breite treten anstelle einer einzigen Nadelhalterstange 7 eine Mehrzahl vorzugsweise gleich langer Nadelhalterstangen 7, die jeweils mit einem oder mehreren Kniegelenk-Hebelpaaren 18 am Gestell 4 aufgehängt sind. Die Schubstange 24 kann sich über die gesamte Breite der Maschine 3 erstrecken oder aus mehreren der Länge der einzelnen Nadelhalterstangen 7 entsprechenden Teilabschnitten zusammensetzen. In der Figur 1 ist auf der rechten Seite der Mehrnadel-Steppmaschine 3 ein Kurbelantrieb 26 dargestellt, der mittels einer Kurbelstange 28 mit der Schubstange 24 verbunden ist. Die Nadelhalterstange 7 liegt in Fig. 1 in annähernd der höchstmöglichen Stellung, d.h. die Nadeln 1 befinden sich annähernd an ihrem obersten Umkehrpunkt.In FIG. 1, reference number 3 shows a multi-needle quilting machine with a frame 4, a sewing material table 15 for the sewing material 41, which can be pulled off from a sewing material supply roll 8 in front of the quilting machine 3 via the sewing material table 15. The needle holder rod 7 with the needles 1 is arranged above the sewing material table 15 and is displaceably mounted on vertical guides 10. The needle holder rod 7 is connected to the frame 4 by pairs of knee and lever pairs 18 which interact. The knee joint lever pairs 18 consist of two knee joint levers 20, the knee joints 22 of which are connected to one another by a push rod 24. In the case of a multi-needle quilting machine 3 of large width, instead of a single needle holder rod 7 there are a plurality of needle holder rods 7, preferably of the same length, which are each suspended on the frame 4 with one or more pairs of knee joints and levers 18. The push rod 24 can extend over the entire width of the machine 3 or can be composed of several sections corresponding to the length of the individual needle holder rods 7. 1 shows a crank drive 26 on the right side of the multi-needle quilting machine 3, which is connected to the push rod 24 by means of a crank rod 28. The needle holder rod 7 is approximately in the highest possible position in FIG. the needles 1 are approximately at their uppermost reversal point.

In Figur 2 ist die Nadel 1 mit einer Schraube 5 an der horizontalen Nadelhalterstange 7, auch Nadellineal genannt, befestigt. Jede Nadelhalterstange 7 erstreckt sich über einen Teilbereich der Breite der Mehrnadel-Steppmaschine 3 und trägt eine Vielzahl von identischen Nadeln 1. Die Nadelhalterstange 7 wird durch den in Figur 1 angedeuteten Antrieb 26 in vertikaler Richtung um den Betrag des Nadelhubes bewegt. Ein bevorzugter Antrieb ist in der Schweizer Patentanmeldung Nr. 3785/94-2 vom 14.12.1994 beschrieben.In Figure 2, the needle 1 with a screw 5 on the horizontal needle holder rod 7, also needle ruler called, attached. Each needle holder rod 7 extends over a portion of the width of the multi-needle quilting machine 3 and carries a plurality of identical needles 1. The needle holder rod 7 is moved in the vertical direction by the amount of the needle stroke by the drive 26 indicated in FIG. A preferred drive is described in Swiss Patent Application No. 3785 / 94-2 dated December 14, 1994.

Rechts von der Nadelhalterstange 7 ist für jede Nadel 1 die Führungsstange 11 als Vertikalführung befestigt und führt einen Anpressfuss 13 lotrecht zum horizontal liegenden Steppguttisch 15. Der Anpressfuss 13 weist an seinem unteren Ende einen vorzugsweise kalottenförmig ausgebildeten Anpresskopf 17 auf, in dessen Zentrum eine Bohrung 19 für den Durchgang der Nadel 1 eingelassen ist. Der Anpresskopf 17 wird durch die die Führungsstange 11 umgebende Führungshülse 21 im wesentlichen spielfrei längsgeführt. Um eine Verdrehung der Führungshülse 21 bzw. des Anpressfusses 13 zu verhindern, ist in der Führungshülse 21 eine Führungsbohrung 23 vorgesehen, welche von einer Hilfsführungsstange 25 durchdrungen wird. Auf der Hilfsführungsstange 25 kann ein Anschlag 27 mit einer Stellschraube 29 sitzen, mit der der Anschlag 27 an der Hilfsführungsstange 25 festgestellt werden kann. Auf der oberen Schulter des Anschlages 27 ist ein Dämpfungselement 31 aufgesetzt, im vorliegenden Beispiel ist es ein O-Ring.To the right of the needle holder rod 7, the guide rod 11 is fastened as a vertical guide for each needle 1 and guides a pressure foot 13 perpendicular to the horizontal quilting table 15. The pressure foot 13 has at its lower end a preferably dome-shaped pressure head 17, in the center of which there is a bore 19 is inserted for the passage of the needle 1. The pressing head 17 is guided longitudinally essentially without play by the guide sleeve 21 surrounding the guide rod 11. In order to prevent rotation of the guide sleeve 21 or the pressure foot 13, a guide bore 23 is provided in the guide sleeve 21, which is penetrated by an auxiliary guide rod 25. A stop 27 with an adjusting screw 29 can be seated on the auxiliary guide rod 25, with which the stop 27 on the auxiliary guide rod 25 can be fixed. A damping element 31 is placed on the upper shoulder of the stop 27, in the present example it is an O-ring.

Am oberen Ende der Führungshülse 21 ragt eine Anschlagnase 33 so weit nach links, damit deren Ende über den vertikalen Fahrbereich der Nadelhalterstange 7 zu liegen kommt. Auch an der Nase 33 ist ein elastisches Pufferelement 35 aufgesetzt, das beim Kontakt mit der Nadelhalterstange 7 den Schlag dämpft und Geräusche vermindert.At the upper end of the guide sleeve 21, a stop lug 33 projects so far to the left that its end comes to rest over the vertical travel range of the needle holder rod 7. An elastic buffer element 35 is also attached to the nose 33, which dampens the shock and reduces noise when it comes into contact with the needle holder rod 7.

Auf dem oberen Ende der Führungsstange 11 sitzt ein auf letzterer verschiebbares ein- und verstellbares Federhalteelement 37, mit welchem die Vorspannung einer die Führungsstange 11 umschlingenden Schraubenfeder 39 einstellbar ist. Die Schraubenfeder 39 liegt einerseits auf der Oberseite der Führungshülse 21 auf und anderseits an der Unterseite des Federhalteelements 37 an.On the upper end of the guide rod 11 there is a spring-holding element 37 which is displaceable and adjustable on the latter and by means of which the pretension of a helical spring 39 which wraps around the guide rod 11 can be adjusted. The helical spring 39 rests on the one hand on the top of the guide sleeve 21 and on the other hand on the underside of the spring holding element 37.

Zwischen der kalottenförmigen Unterseite des Anpresskopfes 17 und der Oberfläche des Näh- oder Steppguttisches 15 liegt das Steppgut 41. Dieses besteht im dargestellten Beispiel aus einem Wattekern 43 sowie einem Unterstoff 45 und einem Oberstoff 47.
Parallel zum und über dem Nähguttisch 15 ist eine Vorkomprimierplatte 51 angeordnet, deren Abstand zur Oberfläche des Nähguttisches 15 einstellbar ist und die einlaufseitig eine hochgebogene Kante 49 aufweist. Im Bereich der Anpressfüsse 13 sind in der Vorkomprimierplatte 51 Ausnehmungen 52 angebracht, durch welche die Anpressköpfe 17 mit Spiel hindurchgeführt werden können. Die Komprimierplatte 51 trägt im vorliegenden Beispiel sowohl die Führungsstangen 11 als auch die Hilfsführungsstangen 25 mit den daran gleitend befestigten Anpressfüssen 13. Die Befestigung erfolgt mit Schrauben 54, wobei zusätzlich zur Zentrierung die unteren Enden der Hilfsführungsstangen 25 in eine Zentrierbohrung 56 in der Oberfläche der Vorkomprimierplatte 51 eingreifen.The quilted material 41 lies between the dome-shaped underside of the pressing head 17 and the surface of the sewing or quilting material table 15. In the example shown, this consists of a cotton core 43 and a lower material 45 and an outer material 47.
A pre-compression plate 51 is arranged parallel to and above the sewing material table 15, the distance of which from the surface of the sewing material table 15 can be adjusted and which has a raised edge 49 on the inlet side. In the area of the pressure feet 13, recesses 52 are made in the pre-compression plate 51, through which the pressure heads 17 can be passed with play. The compression plate 51 carries in the present example both the guide rods 11 and also the auxiliary guide rods 25 with the pressure feet 13 slidably attached thereto. The attachment is carried out with screws 54, the lower ends of the auxiliary guide rods 25 also engaging in a centering hole 56 in the surface of the pre-compression plate 51 for centering purposes.

Die Anordnung, wie sie in Figur 2 dargestellt ist, liegt vor, wenn die Nadel 1 an ihrem oberen Umkehrpunkt steht und der Anpresskopf 17 des Anpressfusses 13 ebenfalls seine höchstmögliche und vom Steppgut 41 abgehobene Stellung einnimmt.The arrangement as shown in FIG. 2 is present when the needle 1 is at its upper reversal point and the pressure head 17 of the pressure foot 13 also assumes its highest possible position, which is lifted from the quilted material 41.

In der Figur 3 führt der nicht dargestellte Antrieb die Nadelhalterstange 7 zusammen mit den Nadeln 1 vertikal nach unten. Die Spitze 53 der Nadel 1 liegt anfänglich während dieser Bewegung stets geschützt innerhalb der Bohrung 21 im Anpresskopf 17. Bei der Absenkbewegung der Nadelhalterstange 7 folgt der Anpressfuss 13 mit der Anschlagnase 33, oben an der Nadelhalterstange 7 aufliegend, der Abwärtsbewegung infolge der Vorspannung der Feder 39. Sobald die kalottenförmige Unterseite des Anpresskopfes 17 auf den Oberstoff 47 zu drücken beginnt, nachdem letzterer durch die Ausnehmung 52 in der Vorkomprimierplatte 51 hindurchgefahren ist, setzt sich der Bewegung des Anpressfusses 13 ein Widerstand entgegen. Dieser Widerstand hängt ab von der Elastizität des Wattekerns 43 sowie der Dicke desselben. Der sich sukzessive erhöhende Widerstand bewirkt, dass das Steppgut 41 zusammengedrückt und damit die Anschlagnase 33 von der Nadelhalterstange 7 abgehoben wird. Die Abwärtsbewegung des Anpressfusses 13 kann durch den Anschlag 27 begrenzt werden, um so - falls erwünscht - die Dicke des Steppgutes 41 im Bereich der zu erzeugenden Naht einzustellen. Da jeder Anpressfuss 13 individuell einstellbar ist, kann auf diese Weise längs der Nadelreihe ein topographisch verlaufendes Muster erzeugt werden.In Figure 3, the drive, not shown, leads the needle holder rod 7 together with the needles 1 vertically downward. During this movement, the tip 53 of the needle 1 is always protected within the bore 21 in the pressure head 17. During the lowering movement of the needle holder rod 7, the pressure foot 13 with the stop lug 33, resting on the needle holder rod 7 at the top, follows the downward movement due to the prestressing of the spring 39. As soon as the dome-shaped underside of the pressing head 17 begins to press on the outer fabric 47 after the latter has passed through the recess 52 in the pre-compression plate 51, the movement of the pressing foot 13 is opposed to resistance. This resistance depends on the elasticity of the cotton core 43 and the thickness thereof. The successively increasing resistance causes the quilting material 41 to be compressed and thus the stop lug 33 to be pulled off Needle holder rod 7 is lifted off. The downward movement of the pressure foot 13 can be limited by the stop 27 in order to adjust the thickness of the quilted material 41 in the region of the seam to be produced, if desired. Since each pressure foot 13 is individually adjustable, a topographically extending pattern can be generated in this way along the row of needles.

Nun bewegen sich die Nadel 1 und der Anpressfuss 13 relativ zueinander. Während des Einstiches der Nadel 1 in das Steppgut 41 wird letzteres vom Anpresskopf 17 festgehalten. Dieser Zustand - abgebildet in Figur 4 - bleibt so lange erhalten, bis die nach dem Einstich wieder nach oben fahrende Nadelhalterstange 7 von unten an die Anschlagnase 33 bzw. das an der Anschlagnase 33 angebrachte Pufferelement 35 anschlägt und dadurch den Anpressfuss 13 vom Steppgut 41 abhebt. Bei diesem Abhebevorgang wird die Feder 39 zusammengepresst. Im Zeitpunkt, in welchem die Nadelhalterstange 7 den Anpressfuss 13 anzuheben beginnt, ist die Nadelspitze 53 bereits wieder innerhalb der Bohrung 19. Bevor jedoch der Anpressfuss 13 vom Steppgut 41 abgehoben wird, zieht die Nadel 1 den Oberfaden mit dem unterhalb dem Steppguttisch 15 übernommenen Unterfaden (beide Fäden nicht dargestellt) in das Steppgut 41 ein. Danach erfolgt das Abheben des Anpresskopfes 17 vom Steppgut 41 synchron mit dem Nach-oben-Fahren der Nadel 1. Nun liegt wieder die Situation vor, wie sie in Figur 2 dargestellt ist und den Beginn eines neuen Einstiches sowie das davorliegende Verschieben des Nähgutes 41 erlaubt.Now the needle 1 and the pressure foot 13 move relative to each other. During the insertion of the needle 1 into the quilted material 41, the latter is held in place by the pressing head 17. This state - shown in FIG. 4 - is maintained until the needle holder rod 7, which moves upward again after the puncture, strikes the stop lug 33 or the buffer element 35 attached to the stop lug 33, thereby lifting the pressure foot 13 off the quilted material 41 . During this lifting process, the spring 39 is compressed. At the time when the needle holder rod 7 begins to raise the pressure foot 13, the needle tip 53 is already inside the bore 19. Before the pressure foot 13 is lifted off the quilted material 41, the needle 1 pulls the upper thread with the lower thread taken over below the quilted material table 15 (both threads not shown) into the quilting material 41. Thereafter, the pressing head 17 is lifted off the quilted material 41 in synchronism with the upward movement of the needle 1. The situation is again as shown in FIG. 2 and allows the start of a new puncture and the shifting of the material 41 in front of it .

Claims (9)

Anpressfuss für eine Mehrnadel-Steppmaschine, mit einem Nadelhalter, welcher eine Mehrzahl von Nadeln trägt und deren Vertikalbewegung bewirkt, mit einer Führungsstange zum vertikalen Führen des Anpressfusses, mit einem Mittel zum Anpressen des Anpressfusses an die Steppgutoberfläche und mit einer Vorkomprimierplatte, dadurch gekennzeichnet, dass die Vorkomprimierplatte (51) eine öffnung (52) aufweist, durch welche der Anpressfuss (13) hindurchführbar ist, und dass der Anpressfuss (13) durch eine von oben wirkende Feder (39) zum Pressen des Steppgutes (41) im Bereich des Nadeleinstiches in Richtung des Nähguttisches (15) pressbar und bei ausserhalb des Steppgutes (41) befindlicher Nadel (1) von der die Nadel (1) tragenden Nadelhalterstange (7) anhebbar ist.Pressure foot for a multi-needle quilting machine, with a needle holder which carries a plurality of needles and causes their vertical movement, with a guide rod for vertically guiding the pressure foot, with a means for pressing the pressure foot against the quilted material surface and with a pre-compression plate, characterized in that the pre-compression plate (51) has an opening (52) through which the pressure foot (13) can be guided and that the pressure foot (13) is actuated by a spring (39) acting from above for pressing the quilted material (41) in the area of the needle prick The direction of the material table (15) can be pressed and, when the needle (1) is outside the quilted material (41), it can be raised by the needle holder rod (7) carrying the needle (1). Anpressfuss nach Anspruch 1, dadurch gekennzeichnet, dass zur vertikalen Führung des Anpressfusses (13) eine Führungshülse (21) auf einer Führungsstange (11) verschiebbar gelagert ist und die Feder (39) von oben auf die Führungshülse (21) drückt.Pressure foot according to claim 1, characterized in that for the vertical guidance of the pressure foot (13) a guide sleeve (21) is slidably mounted on a guide rod (11) and presses the spring (39) from above onto the guide sleeve (21). Anpressfuss nach Anspruch 2, dadurch gekennzeichnet, dass an der Führungshülse (21) eine Anschlagnase (33) befestigt ist, die an der Nadelhalterstange (7) aufliegt und von der Feder (39) angepresst wird.Press-on foot according to claim 2, characterized in that a stop lug (33) is fastened to the guide sleeve (21) and rests on the needle holder rod (7) and is pressed by the spring (39). Anpressfuss nach einem der Ansprüche 2 oder 3, dadurch gekennzeichnet, dass an der Vorkomprimierplatte (51) ein Anschlag (27) angeordnet ist, durch welchen der Verschiebeweg des Anpressfusses (13) gegen unten begrenzbar und der Abstand zwischen dem Nähguttisch (15) und der Sohle des Anpressfusses (13) einstellbar sind.Pressure foot according to one of claims 2 or 3, characterized in that a stop (27) is arranged on the precompression plate (51), by means of which the displacement path of the pressure foot (13) can be limited towards the bottom and the distance between the material table (15) and the Sole of the pressure foot (13) are adjustable. Anpressfuss nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Kraft der Feder (39) durch ein auf der Führungsstange (11) verschiebbares Spannelement (12) einstellbar ist.Pressure foot according to one of claims 1 to 4, characterized in that the force of the spring (39) is adjustable by means of a tensioning element (12) which can be displaced on the guide rod (11). Anpressfuss nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Führungshülse (21) zusätzlich in einer Hilfsführungsstange (25) geführt und gegen Verdrehung gesichert ist.Pressure foot according to one of claims 1 to 5, characterized in that the guide sleeve (21) is additionally guided in an auxiliary guide rod (25) and is secured against rotation. Anpressfuss nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Führungsstange (11) und/oder die Hilfsführungsstange (25) auf der Vorkomprimierplatte (51) befestigt sind.Pressure foot according to one of claims 1 to 6, characterized in that the guide rod (11) and / or the auxiliary guide rod (25) are fastened on the pre-compression plate (51). Anpressfuss nach Anspruch 7, dadurch gekennzeichnet, dass die Vorkomrimierplatte (51) bezüglich des Nähguttisches (15) höhenverstellbar ist.Pressure foot according to claim 7, characterized in that the pre-compression plate (51) is adjustable in height with respect to the material table (15). Anpressfuss nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass jeder Nadel (1) ein von den übrigen Nadeln und Anpressfüssen unabhängig arbeitender Anpressfuss (13) angeordnet ist.Pressure foot according to one of claims 1 to 8, characterized in that each needle (1) is arranged a pressure foot (13) which works independently of the other needles and pressure feet.
EP95810758A 1994-12-14 1995-12-05 Presser for a multi-needle quilting machine Withdrawn EP0717137A1 (en)

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CH03785/94A CH691388A5 (en) 1994-12-14 1994-12-14 Pressing device for multi-needle quilting machine.
CH3785/94 1994-12-14

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US7735439B1 (en) 2006-02-22 2010-06-15 Atlanta Attachment Company Panel quilting machine
CN106676761A (en) * 2016-12-27 2017-05-17 重庆圣泊伦节能环保科技有限公司 Heat preservation quilt sewing device and method
CN110088374A (en) * 2016-10-18 2019-08-02 耐克创新有限合伙公司 System and method for manufacturing footwear felt portion
US11311079B2 (en) 2016-01-19 2022-04-26 Nike, Inc. Footwear with felting transition between materials
US11864627B2 (en) 2016-01-19 2024-01-09 Nike, Inc. Footwear with embroidery transition between materials

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US6145456A (en) * 1999-05-07 2000-11-14 L&P Property Management Company Quilting machine with adjustable presser plate and method of operating the quilting machine
US20030209179A1 (en) * 2002-05-07 2003-11-13 Michelle Scordos Foot for a quilting machine
JP4848176B2 (en) * 2005-11-08 2011-12-28 蛇の目ミシン工業株式会社 Sewing machine free presser
KR101364551B1 (en) * 2007-01-18 2014-02-18 주식회사 썬스타 Driving structure for roe toehold of embroidery
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CN101333732B (en) * 2008-07-31 2012-12-05 苏州市正步机器制造有限公司 Cushion sewing machine and operation method thereof
JP6552233B2 (en) * 2015-03-20 2019-07-31 蛇の目ミシン工業株式会社 sewing machine
CN106958087A (en) * 2017-04-27 2017-07-18 深圳市影儿服饰有限公司 A kind of use in sewing machine presser feet assistor

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US11311079B2 (en) 2016-01-19 2022-04-26 Nike, Inc. Footwear with felting transition between materials
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CN110088374A (en) * 2016-10-18 2019-08-02 耐克创新有限合伙公司 System and method for manufacturing footwear felt portion
CN110088374B (en) * 2016-10-18 2022-12-09 耐克创新有限合伙公司 System and method for manufacturing footwear felts
CN106676761A (en) * 2016-12-27 2017-05-17 重庆圣泊伦节能环保科技有限公司 Heat preservation quilt sewing device and method

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US5694872A (en) 1997-12-09

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