EP2707531B1 - Method for sewing up material to be sewn - Google Patents
Method for sewing up material to be sewn Download PDFInfo
- Publication number
- EP2707531B1 EP2707531B1 EP12716448.1A EP12716448A EP2707531B1 EP 2707531 B1 EP2707531 B1 EP 2707531B1 EP 12716448 A EP12716448 A EP 12716448A EP 2707531 B1 EP2707531 B1 EP 2707531B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- seam
- sewn
- sewing
- seam bulge
- bulge
- 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.)
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Links
- 238000009958 sewing Methods 0.000 title claims description 56
- 239000000463 material Substances 0.000 title claims description 38
- 238000000034 method Methods 0.000 title claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 29
- 238000002844 melting Methods 0.000 claims description 8
- 230000008018 melting Effects 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 4
- 239000004744 fabric Substances 0.000 description 25
- 238000005520 cutting process Methods 0.000 description 4
- 238000004904 shortening Methods 0.000 description 3
- 238000010030 laminating Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 239000002649 leather substitute Substances 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 239000002655 kraft paper Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B17/00—Sewing machines for concurrently making thread and welded seams
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B23/00—Sewing apparatus or machines not otherwise provided for
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B93/00—Stitches; Stitch seams
Definitions
- the invention relates to a method for sewing together a first and a second material and a device for sewing together a first and a second material.
- the shows DE 103 36 600 B3 a device for sewing and cutting a sewing material.
- Another device is from the US 2009/0090285 A1 known.
- Methods for sewing together sewing material are further from the WO 2006/013029 A1 and the US 2003/0221765 A1 known.
- the invention has for its object to provide an improved method of sewing a first and a second fabric and an improved apparatus for sewing a first and second fabric together.
- Embodiments of the invention have the advantage that sewing material can be sewn together in an optimum manner without having to shorten the seam stub unnecessarily severely.
- the seam stump on the fabric after drawing a trim piece with the fabric is not characterized, while still ensuring that a high pull-out strength of the seam stub is.
- the seam stub chosen too short this would mean that the sewing thread used binds the first and second fabric together on an insufficiently large contact surface.
- the lamination of the sewing material increases the likelihood of tearing at the seam stub. If, on the other side, the seam stub chosen to be larger, this would indeed increase the pull-out strength, but the seam stub would become undesiredly noticeable from the sewing material.
- the thermal flattening of the seam stub and simultaneous heating of the seam stub or sewing thread makes it possible on the one hand for the sewing thread to be thermally deformed under the action of force on the seam stub so that a flattened seam stub can result.
- the sewing thread remains in its basic molecular and physical structure so that no loss of quality in terms of tear resistance of the suture are to be feared.
- the first and second fabric are pulled apart before the thermal flattening.
- This has the advantage that in an optimal way the seam stub is squeezed together with the sewing thread in its desired final shape.
- the shape of the seam stub can be optimally defined.
- the seam stub is shortened before the thermal flattening. Preferably, this is done during or immediately after the sewing of the first and second fabric together, whereby by shortening the seam stub such a length can be brought about that just prevented a tearing of the seam stub under force on the first and second fabric.
- the temperature of the heating is further selected so that the first and second material is softened below its melting temperature exclusively in the region of the seam stub. This additionally allows the seam butt to take a minimal form under the action of force, without, however, losing the mass necessary to prevent the suture stub from tearing when force is applied.
- the heating of the seam stub takes place via a hot wedge welding process.
- a hot wedge welding process Such a method has the advantage that it can be realized in a technically simple manner.
- the second stop has a recess for at least partially receiving and guiding the seam stub.
- the shape of the recess gives the final shape of the thermally flattened seam stub.
- the guide of the seam stub helps in the movement of the seam stump to be flattened in the direction of the first and second stop. It is also possible that the second stop in addition to the function as a counter-stop in the flattening of the seam stub also serves as a counter-stop for the hot wedge. This could be realized by the fact that the second stop is a roller or a roller. In a first In the area of the roll, the sewing material is pressed by the heating wedge and in a second area of the roll, the sewing material is pressed by the first stop.
- a hot wedge used for the hot wedge welding process is applied directly to the seam stub before the first stop. "Immediately before the stop” means at a distance of at most 0.5-1cm from the first stop. This could initially have the advantage that already held by the first and second stop the suture butt and thereby pressed against the hot wedge. It thus eliminates a relation to the hot wedge to be mounted counter-stop to press the hot wedge on the run between this counter-stop and the hot wedge seam stub against the heating wedge. The optimum heat transfer is realized by the positive guidance by the first and second stop and pressing on of the suture stub on the heating wedge located immediately before the first stop.
- the stops are in the form of rotating rollers. This minimizes friction due to the rotational capability of the stops between the stops and the seam stub. In principle, the heating of the seam stub takes place before it is fed to the stops for flattening.
- the invention relates to a device for sewing together first and second material, the device comprising means for sewing together the first and second material by means of a sewing thread, wherein the stitching results in a seam stump, wherein the device further comprises means for thermal flattening Seam stub by exerting a force on the seam butt and simultaneous heating of the seam stub, wherein the means for thermal flattening for selecting a temperature of the heating are formed, so that the thread is softened below its melting temperature.
- the invention relates to a cowling, wherein the cowling is laminated with a first and a second fabric, wherein the first and second fabric is sewn together by the method described above.
- FIG. 1 shows seam stubs in different views.
- a side view is selected, in which only a first fabric 102 is visible.
- a second material to be sewn is in this case directly below the first material 102 and is sewn together with the first material 102 by means of a sewing thread 100.
- the stitching results in a protruding edge 304, which is referred to as a "seam stub".
- FIG. 1b is the first fabric 102 and a second fabric 104, which are sewn together over the sewing thread 100, shown in the extended, ie shirred state.
- the cutting edge along which the sewing thread 100 runs. If now the seam stub 304 chosen too short, this leads to the fact that when laminating the first and second fabric 102 and 104 of the suture stub 100 tears, ie a puncture resistance is no longer guaranteed.
- a puncture resistance is no longer guaranteed.
- Such a ripping is for example in the Figure 1c shown as an example.
- the seam stub 304 has a correspondingly large enough size so that tearing along the cutting edge when shirring the first and second fabric 102 and 104 is avoided.
- FIG. 2 shows a device which is commonly used for sewing the first and second fabric 102 and 104 together.
- the sewing material 102 or 104 (in FIG. 2 if only the sewing material 102 is visible - the sewing material 104 is located directly below the sewing material 102), it is guided in the direction 200.
- a sewing thread 100 is sewn in by means of a needle 108, wherein at the same time a shortening of the seam stub, ie a cutting off of a part 106 of the projecting seam stub, is made using a knife 110.
- the cut portion 106 finds no further use in the present invention.
- FIG. 3 shows the result of in FIG. 2 described sewing, namely the stitched together first and second fabric 102 and 104, which are held together over the sewing thread 100.
- This cohesion takes place in the area 304, ie in the area of the seam stub.
- a force is exerted on the seam stub 304 from above and below by means of a first stop 300 and a second stop 302, and at the same time causes thermal heating of the sewing thread 100, this results in a softening of the sewing thread 100 and an optional softening of the first and second Sewing material in the region of the stub 304.
- the area of the seam stub 304 is compressed in a direction perpendicular to the extension direction of the sewing material.
- the seam stub 304 is forced into a predetermined shape by the combination of pressure and heating.
- the recess 306 used for this purpose is a V-shape or a U-shape.
- the recess 306 also serves to guide the seam stub 304 in the direction of the stops 300 and 302.
- FIG. 4 shows the result of the application of force with simultaneous heating of the suture 100.
- the seam butt 304 is substantially shortened, so that in relation to a part 402 to be lined, the suture stump 304 is not or only slightly insignificant. Nonetheless, when laminating the first and second fabric, tearing in the area of the seam stub 304 is prevented because the basic structure (physical and chemical) has not been altered in the region of the seam stub.
- the FIG. 5 shows a device for thermal flattening of the seam stub 304.
- the two stops 300 and 302 are formed in this case by rollers, again preferably the roller 302 has a recess for at least partial heating and guiding the seam stub 304.
- heating of the seam stub 304 by means of a heating wedge 400 takes place simultaneously.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
- Treatment Of Fiber Materials (AREA)
Description
Die Erfindung betrifft ein Verfahren zum Zusammennähen eines ersten und eines zweiten Nähguts sowie eine Vorrichtung zum Zusammennähen eines ersten und eines zweiten Nähguts.The invention relates to a method for sewing together a first and a second material and a device for sewing together a first and a second material.
Insbesondere bei der Herstellung von Innenverkleidungen von Kraftfahrzeugen ist es oft notwendig, dass die hierzu notwendigen Zuschnitte einzeln hergestellt werden müssen, um daraufhin unter Verwendung eines Nähfadens zusammengenäht zu werden. Dies ist insbesondere der Fall bei zum Beispiel Kunstlederzuschnitten mit Polyesterbacking. Damit die mit Kunstleder später zu verkleidenden Teile eine hochwertige optische Anmutung haben, ist es dabei notwendig, dass im Bereich des Nähfadens der resultierende Nahtstummel so kurz wie möglich gehalten wird. Wird nämlich später zusammengenähtes Nähgut kaschiert und dabei auseinandergezogen, macht sich ein zu großer Nahtstummel als Aufwölbung auf dem mit Nähgut verkleideten Teil bemerkbar.In particular, in the manufacture of interior trim of motor vehicles, it is often necessary that the blanks necessary for this purpose must be made individually, then sewn together using a sewing thread to become. This is especially the case with, for example, artificial leather blanks with polyester barking. In order for the parts to be clad with artificial leather to have a high-quality visual appearance, it is necessary that the resulting suture stub is kept as short as possible in the area of the sewing thread. Namely, if later sewn together sewing material and thereby pulled apart, makes itself too big seam stump noticeable as a bulge on the part clad with fabric.
Beispielsweise zeigt die
Demgegenüber liegt der Erfindung die Aufgabe zugrunde, ein verbessertes Verfahren zum Zusammennähen eines ersten und eines zweiten Nähguts und eine verbesserte Vorrichtung zum Zusammennähen eines ersten und zweiten Nähguts zu schaffen.In contrast, the invention has for its object to provide an improved method of sewing a first and a second fabric and an improved apparatus for sewing a first and second fabric together.
Die der Erfindung zugrunde liegenden Aufgaben werden mit den Merkmalen der unabhängigen Patentansprüche gelöst. Bevorzugte Ausführungsformen der Erfindung sind in den abhängigen Patentansprüchen angegeben.The objects underlying the invention are achieved by the features of the independent claims. Preferred embodiments of the invention are indicated in the dependent claims.
Es wird ein Verfahren zum Zusammennähen eines ersten und eines zweiten Nähguts beschrieben, wobei das Verfahren die folgende Schritte hat:
- Zusammennähen des ersten und zweiten Nähguts mittels eines Nähfadens, wobei durch das Zusammennähen ein Nahtstummel entsteht,
- thermisches Verflachen des Nahtstummels durch Ausübung einer Kraft auf dem Nahtstummel und gleichzeitige Erwärmung des Nahtstummels, wobei die Temperatur der Erwärmung so gewählt wird, dass der Nähfaden unterhalb seiner Schmelztemperatur erreicht wird
- Sewing the first and second material together by means of a sewing thread, whereby sewing creates a seam stub,
- thermally flattening the seam stub by exerting a force on the seam stub and simultaneously heating the seam stub, the temperature of the heating being selected to reach the sewing thread below its melting temperature
Ausführungsformen der Erfindung haben den Vorteil, dass in optimaler Weise Nähgut zusammengenäht werden kann, ohne dabei den Nahtstummel unnötig stark verkürzen zu müssen. Damit zeichnet sich der Nahtstummel auf dem Nähgut nach Beziehen eines Verkleidungsteils mit dem Nähgut nicht ab, wobei dennoch gewährleistet ist, dass eine hohe Ausreißfestigkeit des Nahtstummels besteht. Würde nämlich der Nahtstummel zu kurz gewählt, hätte dies zur Folge, dass der verwendete Nähfaden auf einer nur ungenügend großen Kontaktfläche das erste und zweite Nähgut aneinanderbindet. Die Konsequenz wäre, dass beim Kaschieren des Nähguts die Wahrscheinlichkeit des Ausreißens am Nahtstummel erhöht wird. Würde auf der anderen Seite der Nahtstummel größer gewählt, so würde dies die Ausreißfestigkeit zwar erhöhen, der Nahtstummel würde sich jedoch in ungewünschter Weise vom Nähgut abzeichnen.Embodiments of the invention have the advantage that sewing material can be sewn together in an optimum manner without having to shorten the seam stub unnecessarily severely. Thus, the seam stump on the fabric after drawing a trim piece with the fabric is not characterized, while still ensuring that a high pull-out strength of the seam stub is. Namely, if the seam stub chosen too short, this would mean that the sewing thread used binds the first and second fabric together on an insufficiently large contact surface. The consequence would be that the lamination of the sewing material increases the likelihood of tearing at the seam stub. If, on the other side, the seam stub chosen to be larger, this would indeed increase the pull-out strength, but the seam stub would become undesiredly noticeable from the sewing material.
Durch das thermische Verflachen des Nahtstummels und gleichzeitige Erwärmung des Nahtstummels bzw. Nähfadens wird ermöglicht, dass sich einerseits der Nähfaden unter der Krafteinwirkung auf den Nahtstummel so thermisch verformt, dass ein abgeflachter Nahtstummel resultieren kann. Andererseits bleibt jedoch der Nähfaden in seiner grundsätzlichen molekularen und physikalischen Struktur erhalten, sodass keinerlei Qualitätseinbußen hinsichtlich der Reißfestigkeit des Nähfadens zu befürchten sind.The thermal flattening of the seam stub and simultaneous heating of the seam stub or sewing thread makes it possible on the one hand for the sewing thread to be thermally deformed under the action of force on the seam stub so that a flattened seam stub can result. On the other hand, however, the sewing thread remains in its basic molecular and physical structure so that no loss of quality in terms of tear resistance of the suture are to be feared.
Nach einer Ausführungsform der Erfindung wird vor dem thermischen Verflachen das erste und zweite Nähgut auseinandergezogen. Dies hat den Vorteil, dass in optimaler Weise der Nahtstummel mitsamt dem Nähfaden in seine gewünschte Endform gezwängt wird. Damit lässt sich also in optimaler Weise die Form des Nahtstummels definieren.According to one embodiment of the invention, the first and second fabric are pulled apart before the thermal flattening. This has the advantage that in an optimal way the seam stub is squeezed together with the sewing thread in its desired final shape. Thus, the shape of the seam stub can be optimally defined.
Nach einer weiteren Ausführungsform der Erfindung wird vor dem thermischen Verflachen der Nahtstummel gekürzt. Vorzugsweise erfolgt dies während oder unmittelbar nach dem Zusammennähen des ersten und zweiten Nähguts, wobei durch die Kürzung des Nahtstummels eine solche Länge herbeigeführt werden kann, die gerade noch ein Ausreißen des Nahtstummels bei Krafteinwirkung auf das erste und zweite Nähgut verhindert.According to a further embodiment of the invention, the seam stub is shortened before the thermal flattening. Preferably, this is done during or immediately after the sewing of the first and second fabric together, whereby by shortening the seam stub such a length can be brought about that just prevented a tearing of the seam stub under force on the first and second fabric.
Nach einer weiteren Ausführungsform der Erfindung wird die Temperatur der Erwärmung ferner so gewählt, dass das erste und zweite Nähgut unterhalb seiner Schmelztemperatur ausschließlich im Bereich des Nahtstummels erweicht wird. Dadurch wird zusätzlich ermöglicht, dass der Nahtstummel unter Krafteinwirkung eine minimale Form einnimmt, ohne dass jedoch jene Masse verlorengeht, welche notwendig ist, um ein Ausreißen des Nahtstummels bei Krafteinwirkung zu verhindern.According to a further embodiment of the invention, the temperature of the heating is further selected so that the first and second material is softened below its melting temperature exclusively in the region of the seam stub. This additionally allows the seam butt to take a minimal form under the action of force, without, however, losing the mass necessary to prevent the suture stub from tearing when force is applied.
Nach einer weiteren Ausführungsform der Erfindung erfolgt die Erwärmung des Nahtstummels über ein Heizkeilschweißverfahren. Solch ein Verfahren hat den Vorteil, dass es in technisch einfacher Weise realisierbar ist. Alternativ ist es möglich, die Erwärmung des Nahtstummels mittels eines Lasers durchzuführen.According to a further embodiment of the invention, the heating of the seam stub takes place via a hot wedge welding process. Such a method has the advantage that it can be realized in a technically simple manner. Alternatively, it is possible to perform the heating of the seam stub by means of a laser.
Nach einer weiteren Ausführungsform der Erfindung liegt im auseinandergezogenen Zustand des ersten und zweiten Nähguts der Nahtstummel an einem ersten Anschlag an und außerdem liegt die dem Nahtstummel gegenüberliegenden Seite im auseinandergezogenen Zustand des Nähguts an einem zweiten Anschlag an, wobei über dem ersten und dem zweiten Anschlag die Kraft auf dem Nahtstummel ausgeübt wird. Vorzugsweise weist dabei der zweite Anschlag eine Aussparung zur zumindest teilweisen Aufnahme und Führung des Nahtstummels auf. Beispielsweise gibt die Form der Aussparung die endgültige Form des thermisch verflachten Nahtstummels. Damit kann also eine solche Form des Nahtstummels gewählt werden, welche ein Abzeichnen des Nahtstummels nach Verkleidung, d.h. Kaschieren eines Teils mit dem Nähgut optimal verhindert. Die Führung des Nahtstummels hilft bei der Bewegung des zu verflachenden Nahtstummels in Richtung des ersten und zweiten Anschlags. Es ist auch möglich, dass der zweite Anschlag nebst der Funktion als Gegenanschlag bei der Verflachung des Nahtstummels auch gleichzeitig als Gegenanschlag für den Heizkeil dient. Dies könnte dadurch realisiert werden, dass es sich bei dem zweiten Anschlag um eine Walze oder Rolle handelt. In einem ersten Bereich der Rolle wird das Nähgut durch den Heizkeil aufgepresst und in einem zweiten Bereich der Rolle wird das Nähgut durch den ersten Anschlag aufgepresst.According to a further embodiment of the invention lies in the exploded state of the first and second fabric of the suture stub at a first stop and also the opposite side of the seam stump is in the extended state of the fabric at a second stop, wherein the first and the second stop the Force is exerted on the seam stub. Preferably, the second stop has a recess for at least partially receiving and guiding the seam stub. For example, the shape of the recess gives the final shape of the thermally flattened seam stub. Thus, such a shape of the seam stub can be selected, which optimally prevents marking of the seam stub after covering, ie lamination of a part with the sewing material. The guide of the seam stub helps in the movement of the seam stump to be flattened in the direction of the first and second stop. It is also possible that the second stop in addition to the function as a counter-stop in the flattening of the seam stub also serves as a counter-stop for the hot wedge. This could be realized by the fact that the second stop is a roller or a roller. In a first In the area of the roll, the sewing material is pressed by the heating wedge and in a second area of the roll, the sewing material is pressed by the first stop.
Nach einer Ausführungsform der Erfindung wird ein für das Heizkeilschweißverfahren verwendeter Heizkeil unmittelbar am Nahtstummel vor dem ersten Anschlag angelegt. "Unmittelbar vor dem Anschlag" bedeutet dabei in einem Abstand von höchstens 0,5-1cm von dem ersten Anschlag. Dies könnte zunächst den Vorteil haben, dass schon durch den ersten und zweiten Anschlag der Nahtstummel gehaltert wird und dadurch gegen den Heizkeil gepresst wird. Es entfällt also ein gegenüber dem Heizkeil anzubringender Gegenanschlag, um den Heizkeil auf den zwischen diesem Gegenanschlag und dem Heizkeil verlaufenden Nahtstummel gegen den Heizkeil zu pressen. Die optimale Wärmeübertragung wird durch die Zwangsführung durch den ersten und zweiten Anschlag und darüber aufpressen des Nahtstummels auf den unmittelbar vor dem ersten Anschlag befindlichen Heizkeil realisiert.According to one embodiment of the invention, a hot wedge used for the hot wedge welding process is applied directly to the seam stub before the first stop. "Immediately before the stop" means at a distance of at most 0.5-1cm from the first stop. This could initially have the advantage that already held by the first and second stop the suture butt and thereby pressed against the hot wedge. It thus eliminates a relation to the hot wedge to be mounted counter-stop to press the hot wedge on the run between this counter-stop and the hot wedge seam stub against the heating wedge. The optimum heat transfer is realized by the positive guidance by the first and second stop and pressing on of the suture stub on the heating wedge located immediately before the first stop.
Ferner könnte dies den Vorteil haben, dass unmittelbar nach dem Erwärmen der erweichte Nahtstummel sofort den Anschlägen zur Verflachung zugeführt wird. Es erfolgt quasi eine Erhitzung "direkt vor Ort", ohne dass jedoch dabei die Notwendigkeit einer Erhitzung der Anschläge selbst besteht. Dadurch kann für die Anschläge insbesondere ein Material z.B. aus Kunststoff wie Silikon gewählt werden, welches zum einen das erweichte Material verformen kann und zum anderen selbst eine genügend hohe Elastizität aufweist, um der Form des Nahtstummels leicht nachzugeben. Dies erhöht insgesamt die Materialqualität des verflachten Nahtstummels, da dieser nicht einfach nur "mit Gewalt" verpresst wurde, sondern sich selbständig optimal an die Kontur der Anschläge anpassen konnte. Es sei angemerkt, dass es hierfür genügt, wenn einer der Anschläge aus dem besagten Kunststoffmaterial besteht. Der andere Anschlag kann aus Metall sein.Furthermore, this could have the advantage that immediately after the heating of the softened seam stub is immediately fed to the attacks to flattening. There is almost a heating "directly on site", but without the need for heating the attacks themselves. As a result, a material, e.g. be chosen from plastic such as silicone, which on the one hand can deform the softened material and on the other hand even has a sufficiently high elasticity to easily yield to the shape of the seam stub. Overall, this increases the material quality of the flattened seam stub, since this was not simply pressed "by force", but could adapt itself optimally to the contour of the stops. It should be noted that it is sufficient if one of the stops consists of said plastic material. The other stop can be made of metal.
Nach einer Ausführungsform der Erfindung sind die Anschläge in Form von rotierenden Walzen ausgebildet. Damit wird eine Reibung aufgrund der Rotationsfähigkeit der Anschläge zwischen den Anschlägen und dem Nahtstummel minimiert. Grundsätzlich erfolgt die Erwärmung des Nahtstummels, bevor dieser den Anschlägen zur Verflachung zugeführt wird.According to one embodiment of the invention, the stops are in the form of rotating rollers. This minimizes friction due to the rotational capability of the stops between the stops and the seam stub. In principle, the heating of the seam stub takes place before it is fed to the stops for flattening.
In einem weiteren Aspekt betrifft die Erfindung eine Vorrichtung zum Zusammennähen eines ersten und zweiten Nähguts, wobei die Vorrichtung Mittel zum Zusammennähen des ersten und zweiten Nähguts mittels eines Nähfadens umfasst, wobei durch das Zusammennähen ein Nahtstummel entsteht, wobei die Vorrichtung ferner Mittel zum thermischen Verflachen des Nahtstummels durch Ausübung einer Kraft auf den Nahtstummel und gleichzeitige Erwärmung des Nahtstummels aufweist, wobei die Mittel zum thermischen Verflachen zur Wahl einer Temperatur der Erwärmung ausgebildet sind, sodass der Faden unterhalb seiner Schmelztemperatur erweicht wird.In a further aspect, the invention relates to a device for sewing together first and second material, the device comprising means for sewing together the first and second material by means of a sewing thread, wherein the stitching results in a seam stump, wherein the device further comprises means for thermal flattening Seam stub by exerting a force on the seam butt and simultaneous heating of the seam stub, wherein the means for thermal flattening for selecting a temperature of the heating are formed, so that the thread is softened below its melting temperature.
In einem weiteren Aspekt betrifft die Erfindung ein Verkleidungsteil, wobei das Verkleidungsteil mit einem ersten und einem zweiten Nähgut kaschiert ist, wobei das erste und zweite Nähgut durch das obig beschriebene Verfahren zusammengenäht ist.In a further aspect, the invention relates to a cowling, wherein the cowling is laminated with a first and a second fabric, wherein the first and second fabric is sewn together by the method described above.
Im Folgenden werden bevorzugte Ausführungsformen der Erfindung anhand der Zeichnungen näher erläutert. Es zeigen:
- Figur 1
- verschiedene Ansichten von Nahtstummeln,
- Figur 2
- eine Vorrichtung zum Nähen und Kürzen eines Nahtstummels,
- Figur 3
- eine Querschnittansicht eines Nahtstummels,
- Figur 4
- eine Querschnittansicht eines verflachten Nahtstummels,
- Figur 5
- eine Vorrichtung zur thermischen Verflachung eines Nahtstummels.
- FIG. 1
- different views of seam stubs,
- FIG. 2
- a device for sewing and shortening a seam stub,
- FIG. 3
- a cross-sectional view of a seam stub,
- FIG. 4
- a cross-sectional view of a flattened seam stub,
- FIG. 5
- a device for the thermal flattening of a seam stub.
Im Folgenden werden einander ähnliche Elemente mit den gleichen Bezugszeichen gekennzeichnet.Hereinafter, similar elements will be denoted by the same reference numerals.
Die
In der
Aus diesem Grund ist es, wie bereits oben erwähnt, wichtig, dass der Nahtstummel 304 eine entsprechend ausreichende Größe hat, sodass ein Ausreißen entlang der Schnittkante bei Raffen des ersten und zweiten Nähguts 102 und 104 vermieden wird.For this reason, it is important, as already mentioned above, that the
Die
Die
Weist außerdem der zweite Anschlag 302 eine Aussparung 306 zur Formgebung des Nahtstummels 304 auf, wird durch die Kombination von Druck und Erwärmung dem Nahtstummel 304 eine vorgegebene Form aufgedrängt. Beispielsweise handelt es sich bei der hierzu verwendeten Aussparung 306 um eine V-Form oder eine U-Form. Die Aussparung 306 dient außerdem der Führung des Nahtstummels 304 in Richtung auf die Anschläge 300 und 302.In addition, if the
Die
Insgesamt wird also unter Beibehaltung der mechanischen Ausreißfestigkeit des Nahtstummels 304 ein Abzeichnen des Nahtstummels auf dem Verkleidungsteil 402 vermieden. Als weitere Konsequenz bedeutet dies, dass zum Beispiel ein Nahtgraben auf dem Verkleidungsteil 402 zur Vermeidung einer Abzeichnung des Nahtstummels nicht notwendig ist, was insbesondere bei hart kaschierten Bauteilen eine kostengünstige Alternative zum aufwendigen Entformen eines Grabens darstellt, bzw. wenn keine Entformung möglich ist.Overall, while retaining the mechanical pull-out strength of the
Die
Es sei jedoch darauf verwiesen, dass anstatt eines separaten Heizkeils 400 auch die Möglichkeit besteht, die Rolle 302 so mit einer Temperatur zu beaufschlagen, dass beim Kontakt des Nahtstummels 304 mit der Rolle 302 der Erweichungsvorgang von Nähfaden und alternativ Nahtstummel auf eine gewünschte Temperatur unterhalb der Schmelztemperatur des Nähfadens und unterhalb der Schmelztemperatur des Nahtstummels stattfindet. Die Rolle 302 übernimmt damit zusätzlich die Funktion des Heizkeils 400.It should be noted, however, that instead of a separate
- 100100
- Nähfadensewing thread
- 102102
- Nähgutworkpiece
- 104104
- Nähgutworkpiece
- 106106
- Schnittgutclippings
- 108108
- Nadelneedle
- 110110
- Messerknife
- 200200
- Richtungdirection
- 300300
- zweiter Anschlagsecond stop
- 302302
- erster Anschlagfirst stop
- 304304
- Nahtstummelseam stub
- 306306
- Aussparungrecess
- 400400
- Heizkeilwedge
- 402402
- Verkleidungsteilcowling
- 500500
- Richtungdirection
Claims (11)
- A method for sewing together a first (102) and a second (104) material to be sewn, said method comprising the following steps:- sewing together the first and second material to be sewn by means of a yarn (104), wherein a seam bulge (304) is created by the sewing,- thermally flattening the seam bulge (304) by exerting a force on the seam bulge (304) and simultaneously heating the seam bulge (304), wherein the heating temperature is selected such that the yarn (100) is softened below the melting point thereof.
- The method according to Claim 1, wherein the seam bulge (304) is shortened prior to the thermal flattening.
- The method according to one of the preceding claims, wherein the heating temperature is selected such that the first (102) and second (104) material to be sewn are softened below the melting point thereof exclusively in the region of the seam bulge (304).
- The method according to one of the preceding claims, wherein the seam bulge (304) is heated via a hot wedge welding method.
- The method according to one of Claims 1-3, wherein the seam bulge (304) is heated by means of a laser.
- The method according to one of the preceding claims, wherein, prior to the thermal flattening, the first (102) and second (104) material to be sewn are pulled apart from one another, wherein, in the pulled-apart state of the first (102) and second (104) material to be sewn, the seam bulge (304) rests against a first stop (300) and the side opposite the seam bulge (304) rests against a second stop (304), wherein the force is exerted onto the seam bulge (304) via the first (302) and second (304) stop.
- The method according to Claim 6, wherein a hot wedge used for the hot wedge welding method is placed directly on the seam bulge before the first stop (300).
- A device for sewing together a first (102) and a second (104) material to be sewn, wherein the device comprises:- means (108) for sewing together the first and second material to be sewn by means of a yarn, wherein a seam bulge (304) is created by the sewing,- means (300; 302; 400) for thermally flattening the seam bulge (304) by exerting a force onto the seam bulge (304) and simultaneously heating the seam bulge (304), wherein the thermal flattening means are designed for selection of a heating temperature such that the yarn (100) is softened below the melting point thereof.
- The device according to Claim 8, wherein the second stop (304) has a recess (306) for at least partially accommodating and guiding the seam bulge (304).
- The device according to Claim 8, wherein the shape of the recess (306) defines the shape of the thermally flattened seam bulge (304).
- A trim element (402), wherein the trim element is covered with a first (102) and a second (104) material to be sewn, wherein the first (102) and second (104) material to be sewn are sewn together by a method according to one of the preceding Claims 1 to 7.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201110075827 DE102011075827B4 (en) | 2011-05-13 | 2011-05-13 | Method and device for stitching together sewing material and lining part |
PCT/EP2012/057569 WO2012156188A1 (en) | 2011-05-13 | 2012-04-25 | Method for sewing up material to be sewn |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2707531A1 EP2707531A1 (en) | 2014-03-19 |
EP2707531B1 true EP2707531B1 (en) | 2015-04-08 |
Family
ID=45999849
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12716448.1A Active EP2707531B1 (en) | 2011-05-13 | 2012-04-25 | Method for sewing up material to be sewn |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2707531B1 (en) |
DE (1) | DE102011075827B4 (en) |
WO (1) | WO2012156188A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013014687B4 (en) | 2013-09-05 | 2019-03-21 | Lisa Dräxlmaier GmbH | Seam stub fixation by means of sweatband |
DE102021123947A1 (en) | 2020-09-29 | 2022-03-31 | Lisa Dräxlmaier GmbH | PROCEDURE FOR SEALING A SEAM OF TUBE |
DE102022112540A1 (en) | 2022-05-18 | 2023-11-23 | Audi Aktiengesellschaft | Method for producing a vehicle component with a decorative surface, vehicle component and motor vehicle |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE974159C (en) * | 1953-07-11 | 1960-09-29 | Varta Plastic Gmbh | Process for welding thermoplastic plastic films |
CH405902A (en) * | 1955-02-12 | 1966-07-29 | Messerschmitt Ag | Method for producing a pseudo lockstitch seam |
DE2731348A1 (en) * | 1977-07-12 | 1979-01-25 | Friedrich Martin | Seat upholstering blanks contg. large amt. thermoplastic material - are tacked at spaced location following manual registration using heat and pressure |
US6517651B2 (en) * | 2000-12-21 | 2003-02-11 | Tefron Ltd. | Apparatus and method for joining fabrics without sewing |
PL372048A1 (en) * | 2002-05-29 | 2005-07-11 | C Gex Systems C Gex | Method and machine for production of a non-unravelling seam |
DE10336600B3 (en) * | 2003-08-08 | 2004-08-05 | Daimlerchrysler Ag | Unit sewing and trimming leather for vehicle interior coverings, includes thrust blade offset behind needle rod in direction of sewing |
AT413521B (en) * | 2004-07-29 | 2006-03-15 | Eybl Internat Ag | METHOD OF RELATING TO OBJECTS AND SUPPLIES RELATED TO REFERENCE MATERIALS, SUCH AS STEERING WHEELS |
US7690318B2 (en) * | 2007-10-09 | 2010-04-06 | International Automotive Components Group North America, Inc. | Method of sewing a decorative seam and trim component made by that method |
-
2011
- 2011-05-13 DE DE201110075827 patent/DE102011075827B4/en not_active Expired - Fee Related
-
2012
- 2012-04-25 WO PCT/EP2012/057569 patent/WO2012156188A1/en active Application Filing
- 2012-04-25 EP EP12716448.1A patent/EP2707531B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP2707531A1 (en) | 2014-03-19 |
WO2012156188A1 (en) | 2012-11-22 |
DE102011075827A1 (en) | 2012-11-15 |
DE102011075827B4 (en) | 2013-04-25 |
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