EP3951039B1 - Sewing machine feeding device for automatically feeding sewing pieces to a sewing machine - Google Patents

Sewing machine feeding device for automatically feeding sewing pieces to a sewing machine Download PDF

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Publication number
EP3951039B1
EP3951039B1 EP20189205.6A EP20189205A EP3951039B1 EP 3951039 B1 EP3951039 B1 EP 3951039B1 EP 20189205 A EP20189205 A EP 20189205A EP 3951039 B1 EP3951039 B1 EP 3951039B1
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EP
European Patent Office
Prior art keywords
sewing
conveyor belt
sewing machine
parts
placement
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Active
Application number
EP20189205.6A
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German (de)
French (fr)
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EP3951039C0 (en
EP3951039A1 (en
Inventor
Hannes Auer
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3CON Anlagenbau GmbH
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3CON Anlagenbau GmbH
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Application filed by 3CON Anlagenbau GmbH filed Critical 3CON Anlagenbau GmbH
Priority to EP20189205.6A priority Critical patent/EP3951039B1/en
Publication of EP3951039A1 publication Critical patent/EP3951039A1/en
Application granted granted Critical
Publication of EP3951039C0 publication Critical patent/EP3951039C0/en
Publication of EP3951039B1 publication Critical patent/EP3951039B1/en
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    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B35/00—Work-feeding or -handling elements not otherwise provided for
    • D05B35/06—Work-feeding or -handling elements not otherwise provided for for attaching bands, ribbons, strips, or tapes or for binding
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B33/00—Devices incorporated in sewing machines for supplying or removing the work

Definitions

  • the invention relates to a sewing machine loading device for automatically loading a sewing machine with first and second sewing parts to be sewn together according to the preamble of claim 1.
  • sewing dresses are required to cover support elements.
  • sewn dresses are used for interior design to conceal basic supports with sewn dresses.
  • the sewn clothes often consist of a plurality of sewn parts in the form of individual fabric, artificial leather or genuine leather cuts, which are joined together by sewing and/or optionally provided with decorative seams.
  • a particular difficulty is that sewing parts (material cuts) with non-congruent contours often have to be sewn in such a way that a three-dimensional Sewing dress is created. This requires the utmost precision on the part of a seamstress when the sewing parts are manually fed to a sewing machine, aligned with one another and sewn. Furthermore, the manual alignment and feeding of the sewing parts to the sewing machine is associated with a considerable amount of time and therefore costs.
  • a sewing machine loading device according to the preamble of claim 1 is known.
  • the device there has two sewing part feeding devices arranged parallel next to one another with first and second storage tables on which first and second sewing parts are arranged.
  • a second sewing part is placed on a first sewing part using a flip device, with the combination of the first and second sewing parts then being transported further to the sewing machine by means of two conveyor belts arranged next to one another.
  • the DE 102018103591 A1 discloses a sewing machine loading device which has a handling device in the form of a robot, which positions the sewing parts removed from two individual magazines and to be sewn one above the other using a suction member.
  • the DE 2644995 A1 discloses a sewing machine loading device with conveying devices for the simultaneous longitudinal feed of two separate sewing parts fed from a sewing part cutting device. The sewn parts are conveyed there on two separate conveyors that converge.
  • the invention is based on the object of creating a sewing machine loading device with which sewing parts to be sewn together can be positioned relative to one another and fed to a sewing machine fully automatically and in the most accurate and rapid manner possible.
  • the sewing machine loading device comprises a handling device for removing the sewing parts from a sewing part magazine or for picking up the sewing parts from a sewing part cutting device, a positioning device for positioning the two sewing parts in a predetermined relative position and a transport device for transporting the sewing parts from the positioning device in the direction of the sewing machine.
  • the positioning device comprises a first storage table with a first storage area for depositing the first sewing part in a predetermined storage position and a second storage table with a second storage area for depositing the second sewing part in a predetermined storage position. At least one of the storage tables can be moved from a first position in which the two storage surfaces are arranged laterally next to one another to a second position in which the two storage surfaces are arranged one above the other.
  • the transport device includes first and second conveyor belts, which are designed to move the two sewing parts on the storage tables.
  • the first and second conveyor belts are vertically spaced.
  • the first The conveyor belt can be moved together with the first storage table between the first and second positions.
  • the first sewing part can be brought into contact with the first conveyor belt and the second conveyor belt with the second sewing part, such that the sewing parts can be transported from the storage tables in the direction of the sewing machine without changing their mutual relative position.
  • the sewing parts to be sewn together can be removed fully automatically from a sewing part magazine or from a sewing part cutting device (cutter) and fed to the positioning device in order to be positioned one above the other in a predetermined manner.
  • the sewing parts positioned in this way are then automatically transported by the positioning device in the direction of the sewing machine without any further change in their relative position by means of the transport device, in particular to a sewing part manipulator arranged on the sewing machine, which continuously aligns the first and second sewing parts relative to one another transversely to the sewing direction during sewing.
  • the sewing machine loading device thus makes it possible for the sewing parts to be sewn together to be handled fully automatically between the sewing part magazine or the sewing part cutting device and the sewing machine or the sewing part manipulator.
  • the handling and positioning of the sewing parts can be carried out very precisely, at high speed and without manpower.
  • a high working speed is achieved in particular by the fact that the handling device immediately returns to the sewing part magazine or can return to the sewing part cutting device and pick up new sewing parts after the previous sewing parts have been placed on the positioning device.
  • the sewing parts can be arranged one above the other in a very precise manner, with the sewing parts preferably only being separated from one another by one of the storage tables. Due to their endlessly rotating belts, the conveyor belts can transport the sewing parts at any time and in a particularly effective manner from the positioning device to the sewing machine or to the sewing part manipulator.
  • the first conveyor belt is a lower conveyor belt and the second conveyor belt is an upper conveyor belt, the first conveyor belt having a conveyor belt section which is arranged in the area of the first storage surface and in a plane parallel to this and protrudes upwards over the first storage surface.
  • the first conveyor belt can be moved together with the first storage table between the first and second positions.
  • the first sewing part can be pressed by means of the first conveyor belt against a lower surface of the second storage table, which is designed as a sliding surface for the first sewing part.
  • the first storage table can be moved in the vertical direction together with the first conveyor belt.
  • the first sewing part can easily be placed between the first conveyor belt and the sliding surface provided on the underside of the second storage table. This ensures that the first sewing part is taken along by the first conveyor belt without slipping.
  • the second storage table preferably has a sliding surface made of a friction-reducing material, against which the second sewing part can be pressed by means of the second conveyor belt. This also ensures that the second sewing part is carried along by the second conveyor belt without slipping.
  • a centering device for centering the sewing parts on the storage tables is preferably provided on the first storage table and/or second storage table.
  • the centering device can consist of at least one centering pin projecting beyond the first and second storage surfaces, onto which the sewing parts can be attached.
  • the first conveyor belt and/or second conveyor belt is designed as a friction conveyor belt.
  • the first conveyor belt and/or second conveyor belt has a plurality of circumferential belts which are arranged next to one another at a distance. This means that even larger sewing parts can be transported without the sewing parts pivoting on the storage tables.
  • the handling device with which the sewing parts are removed from the sewing part magazine or from the sewing part cutting device comprises vacuum suction devices or needle gripping devices that are designed to hold the sewing parts and can be moved both in the vertical direction and in at least one horizontal direction.
  • the vacuum suction devices or needle gripping devices can be moved at least in two axes.
  • the sewing parts magazine preferably comprises individual magazines arranged next to one another for receiving the first and second sewing parts in stacks, the individual magazines being arranged next to one another and aligned in such a way that the relative position of the first and second sewing parts stacked in the individual magazines corresponds to the relative position which the sewing parts have when placed on the positioning device have.
  • Such an embodiment is particularly suitable for handling devices that can be moved on two axes, since the sewing parts no longer have to be rotated or tilted until they are deposited on the storage tables.
  • the sewing machine loading device comprises an adhesive application device arranged between the sewing part magazine or the sewing part cutting device and the positioning device for applying adhesive to at least one of the sewing parts.
  • Figure 1 shows a sewing machine loading device with which a first sewing part 1 and a second sewing part 2, which are stacked in a sewing part magazine 3, can be fed fully automatically to a sewing machine (not shown) or to a sewing part manipulator of the sewing machine.
  • the sewing machine not shown, is located at the right end of the in Figure 1 Sewing machine loading device shown.
  • the first sewing part 1 and the second sewing part 2 can, for example, be fabric, leather or artificial leather cuts that can have different contours.
  • the sewing parts magazine 3 and the sewing parts 1, 2 are only shown schematically in the drawings and can have a wide variety of designs Have shapes and designs.
  • the sewing part magazine 3 is designed such that it includes a first individual magazine 3a and a second individual magazine 3b.
  • the first individual magazine 3a is designed in such a way that it holds a stack of first sewing parts 1 arranged one above the other.
  • the second individual magazine 3b is designed in such a way that it accommodates a stack of second sewing parts 2 arranged one above the other.
  • the first and second sewing parts 1, 2 are aligned in a predetermined manner on a magazine table 4 and spaced apart from one another.
  • the stacks of sewing parts are held laterally by guide elements 5, which are attached to the magazine table 4 in an adjustable manner.
  • the sewing parts magazine 3 can be filled with the first and second sewing parts 1, 2 manually or using a device (not shown).
  • the sewing machine loading device comprises a handling device 6 for removing the sewing parts 1, 2 from the sewing parts magazine 3, a positioning device 7 for positioning the two sewing parts 1, 2 in a predetermined relative position to one another and a transport device 8 for further transporting the sewing parts 1, 2 from the positioning device 7 direction of the sewing machine.
  • the handling device 6 includes vacuum suction devices 9a, 9b with suction cups 10, which are attached to suction cup holders 11a, 11b.
  • the vacuum suction devices 9a, 9b can be moved vertically, ie in the z direction, by means of motor-driven vertical slides 12a, 12b in order to place the suction cups 10 on the uppermost first sewing part 1 or second sewing part 2 of the sewing parts 1, 2 stacked in the individual magazines 3a, 3b and the sewing parts 1 , to lift 2 from the stacks.
  • holding guides 13a, 13b which extend in the y-direction, are attached to the vertical slides 11a, 11b.
  • the suction cup holders 11a, 11b can be moved along the holding guides 13a, 13b and locked in that y-position in which the suction cups 10 are in the desired position above the associated stack of sewing parts.
  • the two vertical slides 12a, 12b are guided so as to be vertically displaceable on a common horizontal slide 14.
  • the handling device 6 is designed such that the two vacuum suction devices 9a, 9b can be lowered and raised at the same time and can be moved in the x direction.
  • the horizontal carriage 14 is mounted on a plate-shaped console 15 so that it can move in the x direction and can be moved by means of a suitable drive between the sewing part magazine 3 and the positioning device 7 in order to move the sewing parts 1, 2 removed from the sewing part magazine 3 in a manner which will be described in more detail later to be placed on the positioning device 7.
  • Figure 3 shows the positioning device 7.
  • This includes a first storage table 16 with a first storage surface 17 for the first sewing part 1 and a second storage table 18 with a second storage surface 19 for the second sewing part 2.
  • the storage tables 16, 18 can have table extensions 20, 21 in order to to be able to store long sewing parts 1, 2.
  • the storage tables 16, 18 extend at least essentially in parallel horizontal planes and are arranged at different heights. Furthermore, the first storage table 16 is attached to a guide plate 22, which is mounted on the console 15 so that it can move in the x direction. The first storage table 16 can be moved between an in Figure 3 shown first position, in which the first storage table 16 is at least predominantly next to the second storage table 18, and one in the Figures 1 and 4 shown second position are moved, in which the first storage table 16 is at least predominantly under the second storage table 18.
  • the first and second sewing parts 1, 2 are placed on the storage tables 16, 18 not simultaneously, but one after the other.
  • the handling device 6 is moved to the side-by-side storage tables 16, 18 so that the first sewing part 1 is in a predetermined position the first storage table 16 is located, while the second sewing part 2 is in a predetermined position above the second storage table 18 is located.
  • the first sewing part 1 is then placed on the first storage table 16, as in Figure 3 shown.
  • the first sewing part 1 is centered on the first storage table 16 by placing the first sewing part 1 onto a centering pin 23, which is attached to the first storage table 16 and protrudes upwards over it.
  • the first sewing part 1 has a corresponding centering tab with a centering hole.
  • the first storage table 16 is then moved together with the first sewing part 1 into a second position in which the first storage table 16 is located under the second storage table 18 in such a way that the first sewing part 1 is covered by the second storage table 18 and is exactly below that point of the second storage table 18, where the second sewing part 2 is to be placed.
  • This second position is in the Figures 1 and 4 shown.
  • the second storage table 18 initially remains stationary.
  • the centering pin 23 is located outside the second storage table 18 so that it can be moved past the second storage table 18.
  • first storage table 16 is in the appropriate position below the second storage table 18, the first storage table 16 is moved upwards together with a first conveyor belt 24, which will be described in more detail later, by means of a suitable lifting device in such a way that the first sewing part 1 is easily positioned between the first conveyor belt 24 and the second storage table 18 is clamped.
  • the second vertical carriage 12b is then lowered and the second sewing part 2 is placed on the second storage table 18.
  • the centering of the second sewing part 2 on the second storage table 18 is again carried out by the centering pin 23 by placing a centering tab of the second sewing part 2, which has a centering hole, onto the centering pin 23.
  • the two sewing parts 1, 2 are now in a suitable relative position one above the other, but are separated from one another by the second storage table 18.
  • the sewing part pair consisting of the first sewing part 1 and the second sewing part 2 is transported away from the positioning device 7 to the sewing machine or to the sewing part manipulator of the sewing machine by means of the transport device 8, which in particular Figure 5 is visible.
  • the transport device 8 comprises the first conveyor belt 24 for conveying the first sewing part 1 and a second conveyor belt 25 for conveying the second sewing part 2.
  • both conveyor belts 24, 25 each have two circumferential belts 24a, 24b; 25a, 25b, which are arranged next to each other at some distance in order to prevent the first and second sewing parts 1, 2 from pivoting when the sewing parts 1, 2 are moved on the storage tables 16, 18.
  • the first conveyor belt 24 and the first storage table 16 are firmly connected to one another, so that the position of the first conveyor belt 24 relative to the first storage table 16 remains unchanged. If the first storage table 16 is moved from the first position lying next to the second storage table 18 into the second position, in which it is covered by the second storage table 18, the first conveyor belt 24 is moved accordingly.
  • the first conveyor belt 24 is arranged relative to the first storage table 16 in such a way that an upper conveyor belt section 26, which runs parallel to the first storage surface 17, is arranged slightly higher than the first storage surface 17.
  • the first sewing part 1 placed on the first storage table 16 thus rests on the upper conveyor belt section 26 and is additionally supported by the areas of the first storage surface 17 lying laterally next to the conveyor belt section 26.
  • the second conveyor belt 25 is designed the same or very similar to the first conveyor belt 24, but is arranged stationary in the x direction relative to the console 15.
  • the second conveyor belt 25 is attached in a height-adjustable manner to vertical slides 27, which are mounted on a stationary storage console 28.
  • the second conveyor belt 25 can be moved by means of a suitable drive between a raised position in which the second conveyor belt 25 is at a distance above the second storage table 18 and the second sewing part placed thereon 2 is arranged, and are moved vertically to a lowered position, in which a lower conveyor belt section 29 of the second conveyor belt 25 rests on the second sewing part 2.
  • the lower conveyor belt section 29 runs parallel to the second storage surface 19.
  • both storage tables 16, 18 are initially in a position that is shown in Figure 1 is shown. In this position, the storage tables 16, 18 are located in front of the second conveyor belt 25. Both storage tables 16, 18 are then moved together with the first conveyor belt 24 together in the x direction to such an extent that both sewing parts 1, 2 are in the initial area of the conveyor belts 24 , 25 arrive.
  • the second conveyor belt 25 is then lowered to such an extent that the lower conveyor belt section 29 rests lightly on the second sewing part 2.
  • This position is in Figure 5 shown.
  • both conveyor belts 24, 25 protrude in the x direction over the storage tables 16, 18 to the extent required for the two sewing parts to reach the end of the conveyor belts 24, 25 after the conveyor belts 24, 25 have been switched on have been transported, can be taken over by the sewing part manipulation device, not shown, of the sewing machine.
  • the sewing part manipulation device can have a horizontal separating and guide plate, not shown, which is inserted into the space between the two conveyor belts 24, 25 protrudes into it and extends to the second storage table 18, and have upper and lower guide and driving rollers which move the first and second sewing parts 1, 2 in the x direction, i.e. h can move transversely to the sewing direction.
  • the centering pin 23 Before switching on the conveyor belts 24, 25, the centering pin 23 is lowered so far that it is outside the centering holes of the sewing parts 1, 2. In this way, the centering pin 23 does not hinder the movement of the sewing parts 1, 2 on the storage tables 16, 18.
  • the two conveyor belts 24, 25 are preferably friction conveyor belts, i.e. H. the conveyor belt sections 26, 29 of the circulating belts 24a, 24b; 25a, 25b rest with little pressure on the first sewing part 1 or second sewing part 2 and take the sewing parts 1, 2 with them without slipping by means of frictional force when the straps 24a, 24b; 25a, 25b are set in motion.
  • Both the lower surface and the upper surface of the second storage table 18 serve as sliding surfaces for the first sewing part 1 or second sewing part 2.
  • these surfaces are preferably provided with a friction-reducing material 30.
  • This friction-reducing material 30 can be present, for example, in the form of elongated strips which are arranged above the first conveyor belt 24 or below the second conveyor belt 25.

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

Description

Die Erfindung betrifft eine Nähmaschinenbeschickungsvorrichtung zum automatischen Beschicken einer Nähmaschine mit miteinander zu vernähenden ersten und zweiten Nähteilen gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a sewing machine loading device for automatically loading a sewing machine with first and second sewing parts to be sewn together according to the preamble of claim 1.

In vielen technischen Bereichen werden Nähkleider benötigt, um Trägerelemente zu verkleiden. Beispielsweise werden im Automotive-Sektor für die Innenausstattung Nähkleider verwendet, um Grundträger mit Nähkleidern zu kaschieren. Die Nähkleider bestehen dabei häufig aus einer Mehrzahl von Nähteilen in der Form einzelner Stoff-, Kunstleder- oder Echtlederzuschnitten, die mittels Nähen zusammengefügt und/oder gegebenenfalls mit Ziernähten versehen werden.In many technical areas, sewing dresses are required to cover support elements. For example, in the automotive sector, sewn dresses are used for interior design to conceal basic supports with sewn dresses. The sewn clothes often consist of a plurality of sewn parts in the form of individual fabric, artificial leather or genuine leather cuts, which are joined together by sewing and/or optionally provided with decorative seams.

Eine besondere Schwierigkeit besteht darin, dass häufig Nähteile (Materialzuschnitte) mit nicht deckungsgleichen Konturen derart vernäht werden müssen, dass ein dreidimensionales Nähkleid entsteht. Dies erfordert höchste Präzision von Seiten eines Nähers, wenn die Nähteile von Hand einer Nähmaschine zugeführt, zueinander ausgerichtet und vernäht werden. Weiterhin ist das manuelle Ausrichten und Zuführen der Nähteile zur Nähmaschine mit einem erheblichen Zeit- und damit Kostenaufwand verbunden.A particular difficulty is that sewing parts (material cuts) with non-congruent contours often have to be sewn in such a way that a three-dimensional Sewing dress is created. This requires the utmost precision on the part of a seamstress when the sewing parts are manually fed to a sewing machine, aligned with one another and sewn. Furthermore, the manual alignment and feeding of the sewing parts to the sewing machine is associated with a considerable amount of time and therefore costs.

Aus der US 3752471 A ist eine Nähmaschinenbeschickungsvorrichtung gemäß dem Oberbegriff des Anspruchs 1 bekannt. Die dortige Vorrichtung weist zwei parallel nebeneinander angeordnete Nähteilzuführvorrichtungen mit ersten bzw. zweiten Ablagetischen auf, auf denen erste bzw. zweite Nähteile angeordnet sind. In einer Zusammenführstation wird ein zweites Nähteil mittels einer Flipvorrichtung auf ein erstes Nähteil aufgelegt, wobei dann die Kombination aus erstem und zweitem Nähteil mittels zweier nebeneinander angeordneter Förderbänder zur Nähmaschine weitertransportiert wird.From the US 3752471 A a sewing machine loading device according to the preamble of claim 1 is known. The device there has two sewing part feeding devices arranged parallel next to one another with first and second storage tables on which first and second sewing parts are arranged. In a merging station, a second sewing part is placed on a first sewing part using a flip device, with the combination of the first and second sewing parts then being transported further to the sewing machine by means of two conveyor belts arranged next to one another.

Die DE 102018103591 A1 offenbart eine Nähmaschinenbeschickungsvorrichtung, die eine Handhabungseinrichtung in Form eines Roboters aufweist, welche die aus zwei Einzelmagazinen entnommenen und zu vernähenden Nähteile mittels eines Sauglieds übereinander positioniert.The DE 102018103591 A1 discloses a sewing machine loading device which has a handling device in the form of a robot, which positions the sewing parts removed from two individual magazines and to be sewn one above the other using a suction member.

Die DE 2644995 A1 offenbart eine Nähmaschinenbeschickungsvorrichtung mit Fördereinrichtungen zum gleichzeitigen Längsvorschub von zwei gesonderten, aus einer Nähteil-Zuschneidvorrichtung zugeführten Nähteilen. Die Nähteile werden dort auf zwei gesonderten, zueinanderlaufenden Bahnen gefördert.The DE 2644995 A1 discloses a sewing machine loading device with conveying devices for the simultaneous longitudinal feed of two separate sewing parts fed from a sewing part cutting device. The sewn parts are conveyed there on two separate conveyors that converge.

Der Erfindung liegt die Aufgabe zugrunde, eine Nähmaschinenbeschickungsvorrichtung zu schaffen, mit welcher miteinander zu vernähende Nähteile vollautomatisch und auf möglichst genaue und schnelle Weise relativ zueinander positioniert und einer Nähmaschine zugeführt werden können.The invention is based on the object of creating a sewing machine loading device with which sewing parts to be sewn together can be positioned relative to one another and fed to a sewing machine fully automatically and in the most accurate and rapid manner possible.

Diese Aufgabe wird erfindungsgemäß durch eine Nähmaschinenbeschickungsvorrichtung mit den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Ausführungsformen der Erfindung sind in den weiteren Ansprüchen beschrieben.This object is achieved according to the invention by a sewing machine loading device with the features of claim 1. Advantageous embodiments of the invention are described in the further claims.

Erfindungsgemäß umfasst die Nähmaschinenbeschickungsvorrichtung eine Handhabungseinrichtung zum Entnehmen der Nähteile aus einem Nähteilmagazin oder zum Aufnehmen der Nähteile aus einer Nähteil-Zuschneidvorrichtung, eine Positioniereinrichtung zum Positionieren der beiden Nähteile in einer vorbestimmten Relativposition und eine Transporteinrichtung zum Transportieren der Nähteile von der Positioniereinrichtung in Richtung Nähmaschine. Die Positioniereinrichtung umfasst einen ersten Ablagetisch mit einer ersten Ablagefläche zum Ablegen des ersten Nähteils in einer vorbestimmten Ablageposition und einen zweiten Ablagetisch mit einer zweiten Ablagefläche zum Ablegen des zweiten Nähteils in einer vorbestimmten Ablageposition. Mindestens einer der Ablagetische ist von einer ersten Position, in der die beiden Ablageflächen seitlich nebeneinander angeordnet sind, in eine zweite Position verfahrbar, in der die beiden Ablageflächen übereinander angeordnet sind. Die Transporteinrichtung umfasst erste und zweite Förderbänder, die zur Verschiebung der beiden Nähteile auf den Ablagetischen ausgebildet sind. Das erste und zweite Förderband sind vertikal beabstandet. Das erste Förderband ist zusammen mit dem ersten Ablagetisch zwischen der ersten und zweiten Position verfahrbar. Weiterhin ist das erste Nähteil mit dem ersten Förderband und das zweite Förderband mit dem zweiten Nähteil in Kontakt bringbar, derart, dass die Nähteile ohne Veränderung ihrer gegenseitigen Relativposition von den Ablagetischen in Richtung Nähmaschine transportierbar sind.According to the invention, the sewing machine loading device comprises a handling device for removing the sewing parts from a sewing part magazine or for picking up the sewing parts from a sewing part cutting device, a positioning device for positioning the two sewing parts in a predetermined relative position and a transport device for transporting the sewing parts from the positioning device in the direction of the sewing machine. The positioning device comprises a first storage table with a first storage area for depositing the first sewing part in a predetermined storage position and a second storage table with a second storage area for depositing the second sewing part in a predetermined storage position. At least one of the storage tables can be moved from a first position in which the two storage surfaces are arranged laterally next to one another to a second position in which the two storage surfaces are arranged one above the other. The transport device includes first and second conveyor belts, which are designed to move the two sewing parts on the storage tables. The first and second conveyor belts are vertically spaced. The first The conveyor belt can be moved together with the first storage table between the first and second positions. Furthermore, the first sewing part can be brought into contact with the first conveyor belt and the second conveyor belt with the second sewing part, such that the sewing parts can be transported from the storage tables in the direction of the sewing machine without changing their mutual relative position.

Mithilfe der erfindungsgemäßen Nähmaschinenbeschickungsvorrichtung können die miteinander zu vernähenden Nähteile vollautomatisch aus einem Nähteilmagazin oder von einer Nähteil-Zuschneidvorrichtung (Cutter) entnommen und der Positioniereinrichtung zugeführt werden, um dort in vorbestimmter Weise übereinander positioniert zu werden. Anschließend werden die derart positionierten Nähteile ohne weitere Veränderung ihrer Relativposition mittels der Transporteinrichtung automatisch von der Positioniereinrichtung in Richtung der Nähmaschine transportiert, insbesondere zu einem an der Nähmaschine angeordneten Nähteilmanipulator, der die ersten und zweiten Nähteile während des Nähens fortlaufend relativ zueinander quer zur Nährichtung ausrichtet.With the help of the sewing machine loading device according to the invention, the sewing parts to be sewn together can be removed fully automatically from a sewing part magazine or from a sewing part cutting device (cutter) and fed to the positioning device in order to be positioned one above the other in a predetermined manner. The sewing parts positioned in this way are then automatically transported by the positioning device in the direction of the sewing machine without any further change in their relative position by means of the transport device, in particular to a sewing part manipulator arranged on the sewing machine, which continuously aligns the first and second sewing parts relative to one another transversely to the sewing direction during sewing.

Die erfindungsgemäße Nähmaschinenbeschickungsvorrichtung ermöglicht es somit, dass die Handhabung der miteinander zu vernähenden Nähteile zwischen dem Nähteilmagazin bzw. der Nähteil-Zuschneidvorrichtung und der Nähmaschine bzw. dem Nähteilmanipulator vollautomatisch erfolgt. Die Handhabung und Positionierung der Nähteile kann auf diese Weise sehr genau, mit hoher Geschwindigkeit und ohne Arbeitskräfte erfolgen. Eine hohe Arbeitsgeschwindigkeit wird insbesondere dadurch erreicht, dass die Handhabungseinrichtung sofort wieder zum Nähteilmagazin oder zur Nähteil-Zuschneidvorrichtung zurückkehren und neue Nähteile abholen kann, nachdem die vorhergehenden Nähteile auf der Positioniereinrichtung abgelegt worden sind.The sewing machine loading device according to the invention thus makes it possible for the sewing parts to be sewn together to be handled fully automatically between the sewing part magazine or the sewing part cutting device and the sewing machine or the sewing part manipulator. In this way, the handling and positioning of the sewing parts can be carried out very precisely, at high speed and without manpower. A high working speed is achieved in particular by the fact that the handling device immediately returns to the sewing part magazine or can return to the sewing part cutting device and pick up new sewing parts after the previous sewing parts have been placed on the positioning device.

Mithilfe der Ablagetische lassen sich die Nähteile auf sehr exakte Weise übereinander anordnen, wobei die Nähteile vorzugsweise nur durch einen der Ablagetische voneinander getrennt sind. Die Förderbänder können aufgrund ihrer endlos umlaufenden Gurte die Nähteile jederzeit und auf besonders effektive Weise von der Positioniereinrichtung zur Nähmaschine bzw. zum Nähteilmanipulator transportieren.With the help of the storage tables, the sewing parts can be arranged one above the other in a very precise manner, with the sewing parts preferably only being separated from one another by one of the storage tables. Due to their endlessly rotating belts, the conveyor belts can transport the sewing parts at any time and in a particularly effective manner from the positioning device to the sewing machine or to the sewing part manipulator.

Vorzugsweise ist das erste Förderband ein unteres Förderband und das zweite Förderband ein oberes Förderband, wobei das erste Förderband einen Förderbandabschnitt aufweist, der im Bereich der ersten Ablagefläche und in einer zu dieser parallelen Ebene angeordnet ist und über die erste Ablagefläche nach oben vorsteht.Preferably, the first conveyor belt is a lower conveyor belt and the second conveyor belt is an upper conveyor belt, the first conveyor belt having a conveyor belt section which is arranged in the area of the first storage surface and in a plane parallel to this and protrudes upwards over the first storage surface.

Vorzugsweise ist das erste Förderband zusammen mit dem ersten Ablagetisch zwischen der ersten und zweiten Position für fahrbar.Preferably, the first conveyor belt can be moved together with the first storage table between the first and second positions.

Vorzugsweise ist das erste Nähteil in der zweiten Position mittels des ersten Förderbands gegen eine untere Fläche des zweiten Ablagetisches drückbar, die als Gleitfläche für das erste Nähteil ausgebildet ist.Preferably, in the second position, the first sewing part can be pressed by means of the first conveyor belt against a lower surface of the second storage table, which is designed as a sliding surface for the first sewing part.

Vorzugsweise ist der erste Ablagetisch zusammen mit dem ersten Förderband in vertikaler Richtung verfahrbar. Auf diese Weise kann das erste Nähteil leicht zwischen dem ersten Förderband und der auf der Unterseite des zweiten Ablagetisches vorgesehenen Gleitfläche eingeklemmt werden. Hierdurch wird sichergestellt, dass das erste Nähteil ohne Schlupf vom ersten Förderband mitgenommen wird.Preferably, the first storage table can be moved in the vertical direction together with the first conveyor belt. In this way, the first sewing part can easily be placed between the first conveyor belt and the sliding surface provided on the underside of the second storage table. This ensures that the first sewing part is taken along by the first conveyor belt without slipping.

Vorzugsweise weist der zweite Ablagetisch eine Gleitfläche aus einem reibungsreduzierenden Material auf, gegen die das zweite Nähteil mittels des zweiten Förderbands drückbar ist. Dies stellt ebenfalls die schlupffreie Mitnahme des zweiten Nähteils durch das zweite Förderband sicher.The second storage table preferably has a sliding surface made of a friction-reducing material, against which the second sewing part can be pressed by means of the second conveyor belt. This also ensures that the second sewing part is carried along by the second conveyor belt without slipping.

Vorzugsweise ist am ersten Ablagetisch und/oder zweiten Ablagetisch eine Zentriereinrichtung zum zentrierten Positionieren der Nähteile auf den Ablagetischen vorgesehen. Beispielsweise kann die Zentriereinrichtung aus mindestens einem über die erste und zweite Ablagefläche vorstehenden Zentrierstift bestehen, auf den die Nähteile aufsteckbar sind.A centering device for centering the sewing parts on the storage tables is preferably provided on the first storage table and/or second storage table. For example, the centering device can consist of at least one centering pin projecting beyond the first and second storage surfaces, onto which the sewing parts can be attached.

Vorzugsweise ist das erste Förderband und/oder zweite Förderband als Friktionsförderband ausgebildet.Preferably, the first conveyor belt and/or second conveyor belt is designed as a friction conveyor belt.

Vorzugsweise weist das erste Förderband und/oder zweite Förderband mehrere umlaufende Gurte auf, die mit Abstand nebeneinander angeordnet sind. Hierdurch können auch größere Nähteile befördert werden, ohne dass es zu einem Verschwenken der Nähteile auf den Ablagetischen kommt.Preferably, the first conveyor belt and/or second conveyor belt has a plurality of circumferential belts which are arranged next to one another at a distance. This means that even larger sewing parts can be transported without the sewing parts pivoting on the storage tables.

Vorzugsweise umfasst die Handhabungseinrichtung, mit der die Nähteile aus dem Nähteilmagazin oder von der Nähteil-Schneideinrichtung entnommen werden, Vakuumsaugeinrichtungen oder Nadelgreifeinrichtungen, die zur Aufnahme der Nähteile ausgebildet und sowohl in vertikaler Richtung als auch in zumindest einer horizontalen Richtung bewegbar sind. Dies bedeutet, dass die Vakuumsaugeinrichtungen oder Nadelgreifeinrichtungen zumindest in zwei Achsen verfahrbar sind. Es ist jedoch auch ohne weiteres möglich, als Handhabungseinrichtung einen Roboter vorzusehen, der eine freie Bewegungsmöglichkeit im Raum bietet.Preferably, the handling device with which the sewing parts are removed from the sewing part magazine or from the sewing part cutting device comprises vacuum suction devices or needle gripping devices that are designed to hold the sewing parts and can be moved both in the vertical direction and in at least one horizontal direction. This means that the vacuum suction devices or needle gripping devices can be moved at least in two axes. However, it is also easily possible to provide a robot as a handling device that offers free movement in space.

Vorzugsweise umfasst das Nähteilmagazin nebeneinander angeordnete Einzelmagazine zur stapelweisen Aufnahme der ersten und zweiten Nähteile, wobei die Einzelmagazine derart nebeneinander angeordnet und ausgerichtet sind, dass die Relativposition der in den Einzelmagazinen gestapelten ersten und zweiten Nähteile derjenigen Relativposition entspricht, welche die Nähteile beim Ablegen auf der Positioniereinrichtung haben. Eine derartige Ausführungsform eignet sich insbesondere für zweiachsig verfahrbare Handhabungseinrichtungen, da die Nähteile bis zu ihrer Ablage auf den Ablagetischen nicht mehr gedreht oder gekippt werden müssen.The sewing parts magazine preferably comprises individual magazines arranged next to one another for receiving the first and second sewing parts in stacks, the individual magazines being arranged next to one another and aligned in such a way that the relative position of the first and second sewing parts stacked in the individual magazines corresponds to the relative position which the sewing parts have when placed on the positioning device have. Such an embodiment is particularly suitable for handling devices that can be moved on two axes, since the sewing parts no longer have to be rotated or tilted until they are deposited on the storage tables.

Gemäß einer alternativen Ausführungsform umfasst die Nähmaschinenbeschickungsvorrichtung eine zwischen dem Nähteilmagazin oder der Nähteil-Zuschneidvorrichtung und der Positioniereinrichtung angeordnete Klebstoffauftragvorrichtung zum Auftragen von Klebstoff auf mindestens eines der Nähteile.According to an alternative embodiment, the sewing machine loading device comprises an adhesive application device arranged between the sewing part magazine or the sewing part cutting device and the positioning device for applying adhesive to at least one of the sewing parts.

Die Erfindung wird nachfolgend anhand der Zeichnungen beispielhaft näher erläutert. Es zeigen:

Figur 1:
eine erfindungsgemäße Nähmaschinenbeschickungsvorrichtung mit Nähteilmagazin,
Figur 2:
eine etwas schematische Darstellung einer Handhabungseinrichtung und des Nähteilmagazins,
Figur 3:
die Ablagetische und das erste Förderband in einer ersten Position mit einem auf den ersten Ablagetisch abgelegten ersten Nähteil,
Figur 4:
die Ablagetische und das erste Förderband in einer zweiten Position mit einem auf den zweiten Ablagetisch abgelegten zweiten Nähteil, und
Figur 5:
die Ablagetische und das erste Förderband in einer Endposition, in der sie sich unterhalb eines zweiten Förderbands befinden.
The invention is explained in more detail below using the drawings as an example. Show it:
Figure 1:
a sewing machine loading device according to the invention with sewing parts magazine,
Figure 2:
a somewhat schematic representation of a handling device and the sewing part magazine,
Figure 3:
the storage tables and the first conveyor belt in a first position with a first sewing part placed on the first storage table,
Figure 4:
the storage tables and the first conveyor belt in a second position with a second sewing part placed on the second storage table, and
Figure 5:
the storage tables and the first conveyor belt in an end position in which they are located below a second conveyor belt.

Figur 1 zeigt eine Nähmaschinenbeschickungsvorrichtung, mit der ein erstes Nähteil 1 und ein zweites Nähteil 2, die gestapelt in einem Nähteilmagazin 3 liegen, vollautomatisch einer nicht dargestellten Nähmaschine bzw. einem Nähteilmanipulator der Nähmaschine zugeführt werden können. Die nicht dargestellte Nähmaschine befindet sich dabei am rechten Ende der in Figur 1 dargestellten Nähmaschinenbeschickungsvorrichtung. Figure 1 shows a sewing machine loading device with which a first sewing part 1 and a second sewing part 2, which are stacked in a sewing part magazine 3, can be fed fully automatically to a sewing machine (not shown) or to a sewing part manipulator of the sewing machine. The sewing machine, not shown, is located at the right end of the in Figure 1 Sewing machine loading device shown.

Das erste Nähteil 1 und das zweite Nähteil 2 können beispielsweise Stoff-, Leder- oder Kunstlederzuschnitte sein, die unterschiedliche Konturen haben können.The first sewing part 1 and the second sewing part 2 can, for example, be fabric, leather or artificial leather cuts that can have different contours.

Das Nähteilmagazin 3 und die Nähteile 1, 2 sind in den Zeichnungen nur schematisch dargestellt und können unterschiedlichste Formen und Ausgestaltungen haben. Im dargestellten Ausführungsbeispiel ist das Nähteilmagazin 3 derart ausgebildet, dass es ein erstes Einzelmagazin 3a und ein zweites Einzelmagazin 3b umfasst. Das erste Einzelmagazin 3a ist derart ausgebildet, dass es einen Stapel übereinander angeordneter erster Nähteile 1 aufnimmt. Das zweite Einzelmagazin 3b ist derart ausgebildet, dass es einen Stapel übereinander angeordneter zweiter Nähteile 2 aufnimmt. Die ersten und zweiten Nähteile 1, 2 sind dabei in vorbestimmter Weise auf einem Magazintisch 4 ausgerichtet und zueinander beanstandet. Die Nähteilstapel werden seitlich durch Führungselemente 5 gehalten, die verstellbar auf dem Magazintisch 4 befestigt sind.The sewing parts magazine 3 and the sewing parts 1, 2 are only shown schematically in the drawings and can have a wide variety of designs Have shapes and designs. In the exemplary embodiment shown, the sewing part magazine 3 is designed such that it includes a first individual magazine 3a and a second individual magazine 3b. The first individual magazine 3a is designed in such a way that it holds a stack of first sewing parts 1 arranged one above the other. The second individual magazine 3b is designed in such a way that it accommodates a stack of second sewing parts 2 arranged one above the other. The first and second sewing parts 1, 2 are aligned in a predetermined manner on a magazine table 4 and spaced apart from one another. The stacks of sewing parts are held laterally by guide elements 5, which are attached to the magazine table 4 in an adjustable manner.

Das Nähteilmagazin 3 kann manuell oder mittels einer nicht dargestellten Vorrichtung mit den ersten und zweiten Nähteilen 1, 2 befüllt werden.The sewing parts magazine 3 can be filled with the first and second sewing parts 1, 2 manually or using a device (not shown).

Die Nähmaschinenbeschickungsvorrichtung umfasst eine Handhabungseinrichtung 6 zum Entnehmen der Nähteile 1, 2 aus dem Nähteilmagazin 3, eine Positioniereinrichtung 7 zum Positionieren der beiden Nähteile 1, 2 in einer vorbestimmten Relativposition zueinander und eine Transporteinrichtung 8 zum Weitertransport der Nähteile 1, 2 von der Positioniereinrichtung 7 in Richtung der Nähmaschine.The sewing machine loading device comprises a handling device 6 for removing the sewing parts 1, 2 from the sewing parts magazine 3, a positioning device 7 for positioning the two sewing parts 1, 2 in a predetermined relative position to one another and a transport device 8 for further transporting the sewing parts 1, 2 from the positioning device 7 direction of the sewing machine.

Der grundsätzliche Aufbau der Handhabungseinrichtung 6 geht aus den Figuren 1 und 2 hervor. Die Handhabungseinrichtung 6 umfasst Vakuumsaugeinrichtungen 9a, 9b mit Saugglocken 10, die an Saugglockenhaltern 11a, 11b befestigt sind. Die Vakuumsaugeinrichtungen 9a, 9b können mittels motorisch angetriebener Vertikalschlitten 12a, 12b vertikal, d. h. in z-Richtung, verfahren werden, um die Saugglocken 10 auf das oberste erste Nähteil 1 bzw. zweite Nähteil 2 der in den Einzelmagazinen 3a, 3b gestapelten Nähteile 1, 2 aufzusetzen und die Nähteile 1, 2 von den Stapeln abzuheben.The basic structure of the handling device 6 is shown in Figures 1 and 2 out. The handling device 6 includes vacuum suction devices 9a, 9b with suction cups 10, which are attached to suction cup holders 11a, 11b. The vacuum suction devices 9a, 9b can can be moved vertically, ie in the z direction, by means of motor-driven vertical slides 12a, 12b in order to place the suction cups 10 on the uppermost first sewing part 1 or second sewing part 2 of the sewing parts 1, 2 stacked in the individual magazines 3a, 3b and the sewing parts 1 , to lift 2 from the stacks.

Zur korrekten Einstellung der Vakuumsaugeinrichtungen 9a, 9b in y-Richtung sind an den Vertikalschlitten 11a, 11b Halteführungen 13a, 13b befestigt, die sich in y-Richtung erstrecken. Die Saugglockenhalter 11a, 11b können längs der Halteführungen 13a, 13b verschoben und in derjenigen y-Position arretiert werden, in der sich die Saugglocken 10 in der gewünschten Position oberhalb der zugeordneten Nähteilstapel befinden.In order to correctly adjust the vacuum suction devices 9a, 9b in the y-direction, holding guides 13a, 13b, which extend in the y-direction, are attached to the vertical slides 11a, 11b. The suction cup holders 11a, 11b can be moved along the holding guides 13a, 13b and locked in that y-position in which the suction cups 10 are in the desired position above the associated stack of sewing parts.

Die beiden Vertikalschlitten 12a, 12b sind an einem gemeinsamen Horizontalschlitten 14 vertikal verschiebbar geführt. Im dargestellten Ausführungsbeispiel ist die Handhabungseinrichtung 6 derart ausgebildet, dass die beiden Vakuumsaugeinrichtungen 9a, 9b gleichzeitig abgesenkt und angehoben werden sowie in x-Richtung verfahren werden können.The two vertical slides 12a, 12b are guided so as to be vertically displaceable on a common horizontal slide 14. In the exemplary embodiment shown, the handling device 6 is designed such that the two vacuum suction devices 9a, 9b can be lowered and raised at the same time and can be moved in the x direction.

Die Horizontalschlitten 14 ist auf einer plattenförmigen Konsole 15 in x-Richtung verschiebbar gelagert und kann mittels eines geeigneten Antriebs zwischen dem Nähteilmagazin 3 und der Positioniereinrichtung 7 verfahren werden, um die aus dem Nähteilmagazin 3 entnommenen Nähteile 1, 2 in einer später noch näher beschriebenen Weise auf der Positioniereinrichtung 7 abzulegen.The horizontal carriage 14 is mounted on a plate-shaped console 15 so that it can move in the x direction and can be moved by means of a suitable drive between the sewing part magazine 3 and the positioning device 7 in order to move the sewing parts 1, 2 removed from the sewing part magazine 3 in a manner which will be described in more detail later to be placed on the positioning device 7.

Figur 3 zeigt die Positioniereinrichtung 7. Diese umfasst einen ersten Ablagetisch 16 mit einer ersten Ablagefläche 17 für das erste Nähteil 1 und einen zweiten Ablagetisch 18 mit einer zweiten Ablagefläche 19 für das zweite Nähteil 2. Die Ablagetische 16, 18 können Tischverbreiterungen 20, 21 aufweisen, um auch lange Nähteile 1, 2 ablegen zu können. Figure 3 shows the positioning device 7. This includes a first storage table 16 with a first storage surface 17 for the first sewing part 1 and a second storage table 18 with a second storage surface 19 for the second sewing part 2. The storage tables 16, 18 can have table extensions 20, 21 in order to to be able to store long sewing parts 1, 2.

Die Ablagetische 16, 18 erstrecken sich zumindest im wesentlichen in parallelen horizontalen Ebenen und sind in unterschiedlichen Höhen angeordnet. Weiterhin ist der erste Ablagetisch 16 auf einer Führungsplatte 22 befestigt, die in x-Richtung verschiebbar auf der Konsole 15 gelagert ist. Der erste Ablagetisch 16 kann mittels eines geeigneten Antriebs zwischen einer in Figur 3 gezeigten ersten Position, in der sich der erste Ablagetisch 16 zumindest überwiegend neben dem zweiten Ablagetisch 18 befindet, und einer in den Figuren 1 und 4 gezeigten zweiten Position verfahren werden, in der sich der erste Ablagetisch 16 zumindest überwiegend unter dem zweiten Ablagetisch 18 befindet.The storage tables 16, 18 extend at least essentially in parallel horizontal planes and are arranged at different heights. Furthermore, the first storage table 16 is attached to a guide plate 22, which is mounted on the console 15 so that it can move in the x direction. The first storage table 16 can be moved between an in Figure 3 shown first position, in which the first storage table 16 is at least predominantly next to the second storage table 18, and one in the Figures 1 and 4 shown second position are moved, in which the first storage table 16 is at least predominantly under the second storage table 18.

Die Ablage des ersten und zweiten Nähteils 1, 2 auf den Ablagetischen 16, 18 erfolgt beim dargestellten Ausführungsbeispiel nicht gleichzeitig, sondern nacheinander. Hierzu wird die Handhabungseinrichtung 6, nachdem ein erstes Nähteil 1 und ein zweites Nähteil 2 aus dem Nähteilmagazin 3 mittels der Saugglocken 10 entnommen worden sind, soweit zu den nebeneinander angeordneten Ablagetischen 16, 18 verfahren, dass sich das erste Nähteil 1 in einer vorbestimmten Position über dem ersten Ablagetisch 16 befindet, während sich das zweite Nähteil 2 in einer vorbestimmten Position über dem zweiten Ablagetisch 18 befindet. Anschließend wird das erste Nähteil 1 auf dem ersten Ablagetisch 16 abgelegt, wie in Figur 3 dargestellt.In the exemplary embodiment shown, the first and second sewing parts 1, 2 are placed on the storage tables 16, 18 not simultaneously, but one after the other. For this purpose, after a first sewing part 1 and a second sewing part 2 have been removed from the sewing part magazine 3 by means of the suction cups 10, the handling device 6 is moved to the side-by-side storage tables 16, 18 so that the first sewing part 1 is in a predetermined position the first storage table 16 is located, while the second sewing part 2 is in a predetermined position above the second storage table 18 is located. The first sewing part 1 is then placed on the first storage table 16, as in Figure 3 shown.

Die Zentrierung des ersten Nähteils 1 auf dem ersten Ablagetisch 16 erfolgt dadurch, dass das erste Nähteil 1 auf einen Zentrierstift 23 aufgesteckt wird, der auf dem ersten Ablagetisch 16 befestigt ist und über diesen nach oben vorsteht. Hierzu weist das erste Nähteil 1 eine entsprechende Zentrierlasche mit einem Zentrierloch auf.The first sewing part 1 is centered on the first storage table 16 by placing the first sewing part 1 onto a centering pin 23, which is attached to the first storage table 16 and protrudes upwards over it. For this purpose, the first sewing part 1 has a corresponding centering tab with a centering hole.

Anschließend wird der erste Ablagetisch 16 zusammen mit dem ersten Nähteil 1 in eine zweite Position verfahren, in der sich der erste Ablagetisch 16 derart unter dem zweiten Ablagetisch 18 befindet, dass das erste Nähteil 1 vom zweiten Ablagetisch 18 überdeckt ist und sich genau unterhalb derjenigen Stelle des zweiten Ablagetisches 18 befindet, an der das zweite Nähteil 2 abgelegt werden soll. Diese zweite Position ist in den Figuren 1 und 4 dargestellt. Der zweite Ablagetisch 18 bleibt dabei zunächst ortsfest stehen. Der Zentrierstift 23 befindet sich außerhalb des zweiten Ablagetisches 18, so dass er am zweiten Ablagetisch 18 vorbei bewegt werden kann.The first storage table 16 is then moved together with the first sewing part 1 into a second position in which the first storage table 16 is located under the second storage table 18 in such a way that the first sewing part 1 is covered by the second storage table 18 and is exactly below that point of the second storage table 18, where the second sewing part 2 is to be placed. This second position is in the Figures 1 and 4 shown. The second storage table 18 initially remains stationary. The centering pin 23 is located outside the second storage table 18 so that it can be moved past the second storage table 18.

Befindet sich der erste Ablagetisch 16 in der passenden Position unterhalb des zweiten Ablagetisches 18, wird der erste Ablagetisch 16 zusammen mit einem später noch näher beschriebenen ersten Förderband 24 mittels einer geeigneten Hubvorrichtung derart nach oben verfahren, dass das erste Nähteil 1 leicht zwischen dem ersten Förderband 24 und dem zweiten Ablagetisch 18 eingeklemmt wird.If the first storage table 16 is in the appropriate position below the second storage table 18, the first storage table 16 is moved upwards together with a first conveyor belt 24, which will be described in more detail later, by means of a suitable lifting device in such a way that the first sewing part 1 is easily positioned between the first conveyor belt 24 and the second storage table 18 is clamped.

Anschließend wird der zweite Vertikalschlitten 12b abgesenkt und das zweite Nähteil 2 auf dem zweiten Ablagetisch 18 abgelegt. Die Zentrierung des zweiten Nähteils 2 auf dem zweiten Ablagetisch 18 erfolgt wiederum durch den Zentrierstift 23, indem eine ein Zentrierloch aufweisende Zentrierlasche des zweiten Nähteils 2 auf den Zentrierstift 23 aufgesteckt wird. Die beiden Nähteile 1, 2 befinden sich nun in einer passenden Relativposition übereinander, sind jedoch durch den zweiten Ablagetisch 18 voneinander getrennt.The second vertical carriage 12b is then lowered and the second sewing part 2 is placed on the second storage table 18. The centering of the second sewing part 2 on the second storage table 18 is again carried out by the centering pin 23 by placing a centering tab of the second sewing part 2, which has a centering hole, onto the centering pin 23. The two sewing parts 1, 2 are now in a suitable relative position one above the other, but are separated from one another by the second storage table 18.

Der Abtransport des aus dem ersten Nähteil 1 und dem zweiten Nähteil 2 bestehenden Nähteilpaares aus der Positioniereinrichtung 7 zur Nähmaschine bzw. zum Nähteilmanipulator der Nähmaschine erfolgt mittels der Transporteinrichtung 8, die insbesondere aus Figur 5 ersichtlich ist.The sewing part pair consisting of the first sewing part 1 and the second sewing part 2 is transported away from the positioning device 7 to the sewing machine or to the sewing part manipulator of the sewing machine by means of the transport device 8, which in particular Figure 5 is visible.

Die Transporteinrichtung 8 umfasst das erste Förderband 24 zum Befördern des ersten Nähteils 1 und ein zweites Förderband 25 zum Befördern des zweiten Nähteils 2. Im gezeigten Ausführungsbeispiel weisen beide Förderbänder 24, 25 jeweils zwei umlaufende Gurte 24a, 24b; 25a, 25b auf, die mit etwas Abstand nebeneinander angeordnet sind, um ein Verschwenken der ersten und zweiten Nähteile 1, 2 beim Verschieben der Nähteile 1, 2 auf den Ablagetischen 16, 18 zu verhindern. Alternativ ist es jedoch auch ohne weiteres möglich, pro Förderband 24, 25 lediglich einen umlaufenden Gurt vorzusehen, wenn ein Verschwenken der Nähteile 1, 2 beim Weitertransport auf den Ablagetischen 16, 18 ausgeschlossen werden kann, oder mehr als zwei Gurte vorzusehen.The transport device 8 comprises the first conveyor belt 24 for conveying the first sewing part 1 and a second conveyor belt 25 for conveying the second sewing part 2. In the exemplary embodiment shown, both conveyor belts 24, 25 each have two circumferential belts 24a, 24b; 25a, 25b, which are arranged next to each other at some distance in order to prevent the first and second sewing parts 1, 2 from pivoting when the sewing parts 1, 2 are moved on the storage tables 16, 18. Alternatively, however, it is also easily possible to provide only one revolving belt per conveyor belt 24, 25 if pivoting of the sewing parts 1, 2 during further transport on the storage tables 16, 18 can be ruled out, or to provide more than two belts.

Wie aus den Figuren 3 und 5 ersichtlich, sind das erste Förderband 24 und der erste Ablagetisch 16 fest miteinander verbunden, so dass die Position des ersten Förderbands 24 relativ zum ersten Ablagetisch 16 unverändert bleibt. Wird der erste Ablagetisch 16 von der neben dem zweiten Ablagetisch 18 liegenden ersten Position in die zweite Position verfahren, in welcher er vom zweiten Ablagetisch 18 überdeckt ist, wird das erste Förderband 24 entsprechend mit verfahren.Like from the Figures 3 and 5 As can be seen, the first conveyor belt 24 and the first storage table 16 are firmly connected to one another, so that the position of the first conveyor belt 24 relative to the first storage table 16 remains unchanged. If the first storage table 16 is moved from the first position lying next to the second storage table 18 into the second position, in which it is covered by the second storage table 18, the first conveyor belt 24 is moved accordingly.

Weiterhin ist das erste Förderband 24 relativ zum ersten Ablagetisch 16 derart angeordnet, dass ein oberer Förderbandabschnitt 26, der parallel zur ersten Ablagefläche 17 verläuft, geringfügig höher als die erste Ablagefläche 17 angeordnet ist. Das auf dem ersten Ablagetisch 16 abgelegte erste Nähteil 1 liegt somit auf dem oberen Förderbandabschnitt 26 auf und wird durch die seitlich neben dem Förderbandabschnitt 26 liegenden Bereiche der ersten Ablagefläche 17 zusätzlich gestützt.Furthermore, the first conveyor belt 24 is arranged relative to the first storage table 16 in such a way that an upper conveyor belt section 26, which runs parallel to the first storage surface 17, is arranged slightly higher than the first storage surface 17. The first sewing part 1 placed on the first storage table 16 thus rests on the upper conveyor belt section 26 and is additionally supported by the areas of the first storage surface 17 lying laterally next to the conveyor belt section 26.

Wie aus den Figuren 1 und 5 ersichtlich, ist das zweite Förderband 25 gleich oder ganz ähnlich wie das erste Förderband 24 ausgebildet, jedoch in x-Richtung relativ zur Konsole 15 stationär angeordnet. Das zweite Förderband 25 ist höhenverstellbar an Vertikalschlitten 27 befestigt, die an einer stationären Lagerkonsole 28 gelagert sind.Like from the Figures 1 and 5 As can be seen, the second conveyor belt 25 is designed the same or very similar to the first conveyor belt 24, but is arranged stationary in the x direction relative to the console 15. The second conveyor belt 25 is attached in a height-adjustable manner to vertical slides 27, which are mounted on a stationary storage console 28.

Das zweite Förderband 25 kann mittels eines geeigneten Antriebs zwischen einer angehobenen Position, in der das zweite Förderband 25 mit Abstand oberhalb des zweiten Ablagetisches 18 und des darauf abgelegten zweiten Nähteils 2 angeordnet ist, und einer abgesenkten Stellung vertikal verfahren werden, in der ein unterer Förderbandabschnitt 29 des zweiten Förderbands 25 auf dem zweiten Nähteil 2 aufliegt. Der untere Förderbandabschnitt 29 verläuft parallel zur zweiten Ablagefläche 19.The second conveyor belt 25 can be moved by means of a suitable drive between a raised position in which the second conveyor belt 25 is at a distance above the second storage table 18 and the second sewing part placed thereon 2 is arranged, and are moved vertically to a lowered position, in which a lower conveyor belt section 29 of the second conveyor belt 25 rests on the second sewing part 2. The lower conveyor belt section 29 runs parallel to the second storage surface 19.

Nachdem beide Nähteile 1, 2 von den Vakuumsaugeinrichtungen 9a, 9b auf den Ablagetischen 16, 18 abgelegt worden sind und der erste Ablagetisch 16 unter den zweiten Ablagetisch 18 verfahren wurde, befinden sich beide Ablagetische 16, 18 zunächst in einer Position, die in Figur 1 dargestellt ist. In dieser Position befinden sich die Ablagetische 16, 18 noch vor dem zweiten Förderband 25. Beide Ablagetische 16, 18 werden dann zusammen mit dem ersten Förderband 24 gemeinsam in x-Richtung soweit verfahren, dass beide Nähteile 1, 2 in den Anfangsbereich der Förderbänder 24, 25 gelangen.After both sewing parts 1, 2 have been placed on the storage tables 16, 18 by the vacuum suction devices 9a, 9b and the first storage table 16 has been moved under the second storage table 18, both storage tables 16, 18 are initially in a position that is shown in Figure 1 is shown. In this position, the storage tables 16, 18 are located in front of the second conveyor belt 25. Both storage tables 16, 18 are then moved together with the first conveyor belt 24 together in the x direction to such an extent that both sewing parts 1, 2 are in the initial area of the conveyor belts 24 , 25 arrive.

Anschließend wird das zweite Förderband 25 soweit abgesenkt, dass der untere Förderbandabschnitt 29 leicht auf dem zweiten Nähteil 2 aufliegt. Diese Position ist in Figur 5 dargestellt. In dieser Position stehen beide Förderbänder 24, 25 in x-Richtung soweit über die Ablagetische 16, 18 vor, wie es erforderlich ist, dass die beiden Nähteile, wenn sie nach dem Einschalten der Förderbänder 24, 25 bis zum Ende der Förderbänder 24, 25 transportiert worden sind, von der nicht dargestellten Nähteil-Manipulationseinrichtung der Nähmaschine übernommen werden können. Die Nähteil-Manipulationseinrichtung kann zu diesem Zweck eine nicht dargestellte horizontale Trenn- und Führungsplatte, welche in den Zwischenraum zwischen den beiden Förderbändern 24, 25 hineinragt und sich bis zum zweiten Ablagetisch 18 erstreckt, und obere und untere Führungs- und Mitnahmerollen aufweisen, welche das erste und zweite Nähteil 1, 2 in x-Richtung, d. h quer zur Nährichtung, bewegen können.The second conveyor belt 25 is then lowered to such an extent that the lower conveyor belt section 29 rests lightly on the second sewing part 2. This position is in Figure 5 shown. In this position, both conveyor belts 24, 25 protrude in the x direction over the storage tables 16, 18 to the extent required for the two sewing parts to reach the end of the conveyor belts 24, 25 after the conveyor belts 24, 25 have been switched on have been transported, can be taken over by the sewing part manipulation device, not shown, of the sewing machine. For this purpose, the sewing part manipulation device can have a horizontal separating and guide plate, not shown, which is inserted into the space between the two conveyor belts 24, 25 protrudes into it and extends to the second storage table 18, and have upper and lower guide and driving rollers which move the first and second sewing parts 1, 2 in the x direction, i.e. h can move transversely to the sewing direction.

Vor dem Einschalten der Förderbänder 24, 25 wird der Zentrierstift 23 soweit abgesenkt, dass er sich außerhalb der Zentrierlöcher der Nähteile 1, 2 befindet. Auf diese Weise behindert der Zentrierstift 23 nicht das Verschieben der Nähteile 1, 2 auf den Ablagetischen 16, 18.Before switching on the conveyor belts 24, 25, the centering pin 23 is lowered so far that it is outside the centering holes of the sewing parts 1, 2. In this way, the centering pin 23 does not hinder the movement of the sewing parts 1, 2 on the storage tables 16, 18.

Bei den beiden Förderbändern 24, 25 handelt es sich vorzugsweise um Friktionsförderbänder, d. h. die Förderbandabschnitte 26, 29 der umlaufenden Gurte 24a, 24b; 25a, 25b liegen mit geringem Druck auf dem ersten Nähteil 1 bzw. zweiten Nähteil 2 auf und nehmen die Nähteile 1, 2 schlupffrei mittels Reibkraft mit, wenn die Gurte 24a, 24b; 25a, 25b in Bewegung gesetzt werden.The two conveyor belts 24, 25 are preferably friction conveyor belts, i.e. H. the conveyor belt sections 26, 29 of the circulating belts 24a, 24b; 25a, 25b rest with little pressure on the first sewing part 1 or second sewing part 2 and take the sewing parts 1, 2 with them without slipping by means of frictional force when the straps 24a, 24b; 25a, 25b are set in motion.

Sowohl die untere Fläche als auch die obere Fläche des zweiten Ablagetisches 18 dienen dabei als Gleitflächen für das erste Nähteil 1 bzw. zweite Nähteil 2. Um dort die Reibung möglichst gering zu halten, sind diese Flächen vorzugsweise mit einem reibungsreduzierenden Material 30 versehen. Dieses reibungsreduzierende Material 30 kann beispielsweise in der Form von länglichen Streifen vorliegen, die oberhalb des ersten Förderbands 24 bzw. unterhalb des zweiten Förderbands 25 angeordnet sind.Both the lower surface and the upper surface of the second storage table 18 serve as sliding surfaces for the first sewing part 1 or second sewing part 2. In order to keep the friction there as low as possible, these surfaces are preferably provided with a friction-reducing material 30. This friction-reducing material 30 can be present, for example, in the form of elongated strips which are arranged above the first conveyor belt 24 or below the second conveyor belt 25.

Im Rahmen der Erfindung sind eine Vielzahl von Variationen möglich. Beispielsweise ist es möglich, dass kein Nähteilmagazin 3 vorgesehen ist, sondern die Nähteile 1, 2 mittels eines Roboters direkt von einer Nähteil-Zuschneideinrichtung übernommen und an die Positioniereinrichtung 7 übergeben werden. Weiterhin ist es möglich, dass die vom Nähteilmagazin 3 oder von der Nähteil-Zuschneidvorrichtung entnommenen Nähteile 1, 2 zunächst einer Klebstoffauftragvorrichtung zugeführt und mit einem Klebstoff versehen werden, bevor sie der Positioniereinrichtung 7 zugeführt werden.A large number of variations are possible within the scope of the invention. For example, it is possible that no sewing part magazine 3 is provided, but rather that the sewing parts 1, 2 are taken directly from a sewing part cutting device by means of a robot and transferred to the positioning device 7. Furthermore, it is possible for the sewing parts 1, 2 removed from the sewing part magazine 3 or from the sewing part cutting device to first be fed to an adhesive application device and provided with an adhesive before they are fed to the positioning device 7.

Claims (14)

  1. Sewing machine feeding apparatus for automatically feeding a sewing machine with first and second sewing parts (1, 2) to be sewed to each other,
    wherein the sewing machine feeding apparatus comprises a handling device (6) for removing the sewing parts (1, 2) from a sewing part magazine (3) or for receiving the sewing parts (1, 2) from a sewing part cutter, a positioning device (7) for positioning the two sewing parts (1, 2) in a pre-determined relative position, and a transport device (8) for transporting the sewing parts (1, 2) from the positioning device (7) in the direction of the sewing machine,
    wherein the positioning device (7) comprises a first placement table (16) having a first placement surface (17) for placing the first sewing part (1) in a pre-determined placement position, and a second placement table (18) having a second placement surface (19) for placing the second sewing part (2) in a pre-determined placement position,
    wherein at least one of the placement tables (16, 18) can be displaced from a first position, in which the two placement surfaces (17, 19) are arranged laterally next to each other, into a second position, in which the two placement surfaces (17, 19) are arranged one above the other,
    wherein the transport device (8) comprises first and second conveyor belts (24, 25), characterised in that the first and second conveyor belt (24, 25) are vertically spaced apart and are designed to shift the two sewing parts (1, 2) on the placement tables (16, 18),
    and in that the first conveyor belt (24) can be displaced together with the first placement table (16) between the first and second position,
    and in that the first sewing part (1) can be brought into contact with the first conveyor belt (24) and the second conveyor belt (25) can be brought into contact with the second sewing part (2) such that the sewing parts (1, 2) can be transported from the placement tables (16, 18) in the direction of the sewing machine without changing their mutual relative position.
  2. Sewing machine feeding apparatus according to claim 1, characterised in that the first conveyor belt (24) is a lower conveyor belt and the second conveyor belt (25) is an upper conveyor belt, wherein the first conveyor belt (24) has a conveyor belt portion (26) which is arranged in the region of the first placement surface (17) and in a plane in parallel with the latter and protrudes upwards beyond the first placement surface (17).
  3. Sewing machine feeding apparatus according to claim 1 or 2, characterised in that, in the second position, the first sewing part (1) can be pressed against a lower surface of the second placement table (18) by means of the first conveyor belt (24), said lower surface being designed as a sliding surface for the first sewing part (1).
  4. Sewing machine feeding apparatus according to one of the preceding claims, characterised in that the first placement table (16) can be displaced in the vertical direction together with the first conveyor belt (24).
  5. Sewing machine feeding apparatus according to one of the preceding claims, characterised in that the second conveyor belt (25) is arranged above the second placement table (18) in a fixed horizontal position and can be displaced in the vertical direction.
  6. Sewing machine feeding apparatus according to one of the preceding claims, characterised in that the second placement table (18) has a sliding surface made of a friction-reducing material, against which the second sewing part (2) can be pressed by means of the second conveyor belt (25).
  7. Sewing machine feeding apparatus according to one of the preceding claims, characterised in that a centring device for the centred positioning of the sewing parts (1, 2) on the placement tables (16, 18) is provided on the first placement table (16) and/or second placement table (18).
  8. Sewing machine feeding apparatus according to claim 7, characterised in that the centring device consists of at least one centring pin (23) which protrudes beyond the first and second placement surface (17, 19), onto which centring pin the sewing parts (1, 2) can be attached.
  9. Sewing machine feeding apparatus according to one of the preceding claims, characterised in that the first conveyor belt (24) and/or second conveyor belt (25) is designed as a friction conveyor belt.
  10. Sewing machine feeding apparatus according to one of the preceding claims, characterised in that the first conveyor belt (24) and/or second conveyor belt (25) has several peripheral straps (24a, 24b; 25a, 25b), which are arranged next to one another while spaced apart from one another.
  11. Sewing machine feeding apparatus according to one of the preceding claims, characterised in that the handling device (6) comprises vacuum suction devices (9a, 9b) or needle grip devices, which are designed to receive the sewing parts (1, 2), and which can be moved both in the vertical direction and in at least one horizontal direction.
  12. Sewing machine feeding apparatus according to one of the preceding claims, characterised in that the handling device (6) is a robot.
  13. Sewing machine feeding apparatus according to one of the preceding claims, characterised in that the sewing part magazine (3) comprises individual magazines (3a, 3b) arranged next to each other for stacked reception of the sewing parts, wherein the individual magazines (3a, 3b) are arranged and aligned such that the relative position of the sewing parts (1, 2) stacked in the individual magazines (3a, 3b) corresponds to that relative position which the sewing parts (1, 2) have when placed on the positioning device (7).
  14. Sewing machine feeding apparatus according to one of the preceding claims, characterised in that the sewing machine feeding apparatus comprises an adhesive application apparatus for applying adhesive to at least one of the sewing parts (1, 2), said adhesive application apparatus being arranged between the sewing part magazine (3) or the sewing part cutter and the positioning device (7).
EP20189205.6A 2020-08-03 2020-08-03 Sewing machine feeding device for automatically feeding sewing pieces to a sewing machine Active EP3951039B1 (en)

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Application Number Priority Date Filing Date Title
EP20189205.6A EP3951039B1 (en) 2020-08-03 2020-08-03 Sewing machine feeding device for automatically feeding sewing pieces to a sewing machine

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EP3951039C0 EP3951039C0 (en) 2024-03-13
EP3951039B1 true EP3951039B1 (en) 2024-03-13

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Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3604701A (en) * 1967-11-07 1971-09-14 Ivanhoe Research Corp Processes, systems, and composite systems for automating the manufacture of wearing apparel, headgear, footwear, components thereof and similar products
US4009672A (en) * 1975-10-06 1977-03-01 Jetsew, Inc. Sewing machine material preassembly system
JP6978209B2 (en) * 2017-02-17 2021-12-08 Juki株式会社 Sewing system

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EP3951039A1 (en) 2022-02-09

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