EP0187351B1 - Device for picking up single spread out fabrics, preferably plastic fabrics - Google Patents

Device for picking up single spread out fabrics, preferably plastic fabrics Download PDF

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Publication number
EP0187351B1
EP0187351B1 EP85116338A EP85116338A EP0187351B1 EP 0187351 B1 EP0187351 B1 EP 0187351B1 EP 85116338 A EP85116338 A EP 85116338A EP 85116338 A EP85116338 A EP 85116338A EP 0187351 B1 EP0187351 B1 EP 0187351B1
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EP
European Patent Office
Prior art keywords
textile
brushes
pivot
bag
levers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP85116338A
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German (de)
French (fr)
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EP0187351A1 (en
Inventor
Karlheinz Klebe
Friedrich Hauptstein
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Cessione librawerk Maschinen Fabrik GmbH
Original Assignee
Librawerk Pelz & Nagel & Co KG GmbH
Librawerk Pelz & Nagel & Co Kg ik GmbH
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Priority to AT85116338T priority Critical patent/ATE41401T1/en
Publication of EP0187351A1 publication Critical patent/EP0187351A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/12—Feeding flexible bags or carton blanks in flat or collapsed state; Feeding flat bags connected to form a series or chain
    • B65B43/14—Feeding individual bags or carton blanks from piles or magazines
    • B65B43/16—Feeding individual bags or carton blanks from piles or magazines by grippers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/22—Separating articles from piles by needles or the like engaging the articles

Definitions

  • the invention relates to a device for detecting flat-lying fabric parts or fabric bags, preferably made of plastic, for lifting or lifting a stack, in which at least two brushes that can be pressed onto the stack and engage in the top fabric part or the top fabric bag toward and away from each other are movably held on a lifting and swiveling device, the brushes having steel bristles which, at least in the region of their free ends, are inclined in the direction of engagement.
  • a series of parallel strips which can be moved relative to one another are arranged on the underside of a housing which can be raised and lowered and which are mutually longitudinally displaceable and at the same time raised and lowered are, so that when they rest on a fabric part with their oppositely inclined and the fabric part facing tips engage in the fabric part.
  • Relatively large mechanical expenditures are again required for the displacement of the strips arranged parallel to one another.
  • special measures are again required, since the return of the strips equipped with the tips to their starting position cannot ensure that the tissue pieces are released.
  • the invention has for its object to design the device mentioned in the introduction so that with only a few movable levers, both the secure gripping of the topmost piece of tissue or tissue bag in the stack and the complete release of the gripped part after the transfer to a predetermined storage location is ensured.
  • the brushes of the device described in the introduction are arranged at the free ends of pivoted levers which are held at a distance and are connected to a pivoting drive, and the free ends of the pivoting levers with the brushes for releasing the respectively detected tissue part or tissue bag beyond their initial position for detecting the Tissue part or tissue bag can be transferred into a more approximate position.
  • swivel levers are designed as double-armed levers and are rotatably mounted on a vertically movable cross member and if the ends of the levers remote from the brushes are connected to one another via a swivel drive acting like a telescope.
  • a piston-cylinder arrangement can be provided as a swivel drive.
  • the aforementioned drive for the swivel levers enables the aforementioned transfer of the brushes to release the tissue part into a position in which they can be moved together beyond their starting position when the tissue part is gripped without difficulty.
  • the pivoting levers can expediently be assigned a spring arrangement, which attempts to transfer the pivoting levers from the position for releasing the detected tissue part or tissue bag to the starting position for detecting the tissue part or tissue bag.
  • the device described is not only suitable for the detection and lifting of tissue parts or bags, but it can also be used according to claim 5.
  • Open sack mouths can be used. To open the sack mouths, it is not necessary that the two devices engaging in the opposite tissue walls perform a movement perpendicular to the plane of the tissue walls, but it is sufficient if only one pair of brushes performs this movement and the other pair of brushes is held in position.
  • the drawing shows an embodiment of the invention in a schematic representation.
  • a lifting device 12 which is movable in its longitudinal direction is held on a carrier 11 and is connected at its free end facing away from the carrier 11 according to FIG. 2 to a supporting beam 13, which in turn is at the ends is each equipped with a similar gripping device, generally designated 14.
  • the lifting device 12 is designed as a piston-cylinder arrangement, the piston rod of which is connected to the supporting beam 13.
  • the lifting device 12 fastened in the direction of the double arrow 17 to the supporting beam 11 with the associated gripping devices 14 is shown in solid lines above a stack 8 and shown in dashed lines in a position above a deposit table 16.
  • the gripping devices 14 are each equipped with two brushes 18 and 19 which can be moved back and forth, the design and operation of which are described in detail in connection with FIGS. 3 to 5.
  • FIGS. 3 to 5 The design of the gripping devices results from FIGS. 3 to 5. In these figures, the gripping devices 14 are shown without an outer casing in order to better explain the functionality.
  • the brushes 18 and 19 are fastened to the lower free ends of the pivot levers 20, which are designed as double-armed levers and are held on a crossbar 21 via pivot axes 22 and 23, and at their ends remote from the brushes 18 and 19 via a telescope acting swivel drive 24 are interconnected.
  • the telescoping swivel drive 24 engages via articulation points at the upper ends of the double-armed swivel lever 20 and, in the example shown, is designed as a piston-cylinder arrangement which can be acted upon on both sides. When the piston-cylinder arrangement is actuated, the brushes 18 and 19 are moved towards or away from one another in order to achieve the positions shown in FIGS. 4 and 5.
  • the brushes 18 and 19 shown in FIGS. 1 to 5 are designed as flat brushes with steel bristles 26, i. H. their steel bristles 26 end in a common plane.
  • the figures show that the steel bristles 26 of the brush 18 with their free ends in one direction and the steel bristles 26 of the brush 19 with their free ends in the opposite direction are inclined.
  • the inclined course of the free ends of the steel bristles 26 corresponds to the direction of engagement of the brushes 18 and 19 in the flat-lying tissue part or the tissue bag 8a to be detected.
  • the steel bristles 26 can have hardened and ground tips at their free ends.
  • the brushes 18, 19 are held interchangeably on the swivel levers 20 assigned to them, so that they can be replaced and replaced when worn. In this way it is possible to use brushes 18, 19 with steel bristles 26 of different spacing and different rigidity, depending on the structure of the tissue part or tissue bag to be gripped by the brushes 18, 19.
  • Brushes whose steel bristles are arranged so closely that at least 4 mm 2 of steel bristle is provided and the brush has a dimension of at least 4 cm 2 have proven useful for grasping plastic fabric bags, so that more than 100 at a point of attack of the brush Bristles come into contact with the tissue surface.
  • FIG. 5 shows that to release the tissue part, the brushes 18 and 19 are moved into a more approximated position than is the case according to FIG. 6 when the tissue part 8a is gripped.
  • the fabric part 8a comes out of the action of the steel boron solely due to gravity Most 26 of the aforementioned brushes 18, 19, so that any manipulations for the release of the tissue part 8a are not required.
  • a spring arrangement 27 is provided, which acts upon release of the piston-cylinder arrangement 24 in the position according to FIG. 5 by the spring 27a tensioned in this position and the return bolt 27b under the action of this spring on the right-hand double-arm pivot lever 20 in FIGS. 3 to 5 and this swings back into the position shown in FIG. 3.
  • FIGS. 1 to 5 Devices of the design shown in FIGS. 1 to 5 have already proven extremely useful in long-term trials for separating tissue bags by lifting off the top sack of a stack.
  • FIGS. 1 to 5 are not only suitable for lifting and separating tissue parts or tissue bags, but they can also be provided for opening sack openings.
  • two arrangements according to FIGS. 1 to 5 are provided, each with two brushes 18 and 19 that can be moved back and forth, which move the fabric walls of the sack in the flat state in the direction perpendicular to its plane and thus remove it from one another, so that a corresponding one Opening of the sack at the mouth is reached. It is sufficient if only one pair of brushes 18, 19 is moved via a corresponding lifting device, while the other pair of brushes is only held back and forth so as to achieve the engagement.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

1. A device for picking up individual textile parts or textile bags, lying flat and preferably of plastics, for lifting or removing from a stack (8), in which at least two brushes (18, 19), which can be pressed against the stack and engaging in the uppermost textile part (8a) or the uppermost textile bag, are held so as to be movable towards and away from each other on a lifting and pivot arrangement (12), wherein the brushes have steel bristles (26), which extend inclinedly in the engagement direction at least in the region of their free ends, characterized in that the brushes (18, 19) are arranged at the free ends of pivot levers (20) which are held at a spacing and connected to a pivot drive (24), and in that the free ends of the pivot levers (20) with the brushes (18, 19) for the release of the actual picked-up textile part (8a) or textile bag can be transferred beyond its initial position for picking up the textile part or textile bag to a much closer position.

Description

Die Erfindung betrifft eine Vorrichtung zum Erfassen flachliegender, vorzugsweise aus Kunststoff hergestellter Gewebeteile oder Gewebesäcke, zum An- oder Abheben von einem Stapel, bei der wenigstens zwei auf den Stapel andrückbare und in das oberste Gewebeteil oder den obersten Gewebesack eingreifende Bürsten aufeinander zu und voneinander weg bewegbar an einer Hub- und Schwenkeinrichtung gehalten sind, wobei die Bürsten Stahlborsten aufweisen, die wenigstens im Bereich ihrer freien Enden in Eingriffsrichtung geneigt verlaufen.The invention relates to a device for detecting flat-lying fabric parts or fabric bags, preferably made of plastic, for lifting or lifting a stack, in which at least two brushes that can be pressed onto the stack and engage in the top fabric part or the top fabric bag toward and away from each other are movably held on a lifting and swiveling device, the brushes having steel bristles which, at least in the region of their free ends, are inclined in the direction of engagement.

Es sind Vorrichtungen der genannten Art bekannt (DD-C-104272), bei denen an schwenkbaren Greiferbacken angeordnete Nadelkissen mit Hilfe eines sehr komplizierten Mechanismus in die Eingriffs- und Spreizstellung überführbar sind, in welcher sie das jeweils ergriffene Gewebeelement zum Abheben von dem Stapel sicher halten. Das jeweils von dem Stapel mit der bekannten Vorrichtung abgehobene Gewebestück muß für die Weiterverarbeitung von Hand von den Nadeln des Nadelkissens abgenommen werden.Devices of the type mentioned are known (DD-C-104272), in which pin cushions arranged on pivotable gripper jaws can be moved into the engagement and spreading position with the aid of a very complicated mechanism, in which they secure the respectively gripped tissue element for lifting off the stack hold. The piece of tissue lifted from the stack with the known device must be removed by hand from the needles of the pincushion for further processing.

Bei einer anderen bekannten Vorrichtung (FR-A-1 348 799) sind statt der eingangs genannten Bürsten eine Reihe gegeneinander verschiebbarer paralleler Leisten an der Unterseite eines heb-und senkbar gehaltenen Gehäuses angeordnet, die wechselweise gegeneinander längs verschiebbar und gleichzeitig heb- und senkbar geführt sind, so daß sie bei ihrer Auflage auf einem Gewebeteil mit ihren gegensinnig geneigten und dem Gewebeteil zugekehrten angeformten Spitzen in das Gewebeteil eingreifen. Für die Verschiebung der parallel zueinander angeordneten Leisten sind wiederum relativ große mechanische Aufwendungen erforderlich. Um die ergriffenen und an einen anderen Ort geförderten einzelnen Gewebestücke von der Vorrichtung abzunehmen, sind wiederum besondere Maßnahmen erforderlich, da die Rückführung der mit den Spitzen ausgerüsteten Leisten in ihre Ausgangsstellung eine Freigabe der Gewebestücke nicht sicherstellen können.In another known device (FR-A-1 348 799), instead of the brushes mentioned at the outset, a series of parallel strips which can be moved relative to one another are arranged on the underside of a housing which can be raised and lowered and which are mutually longitudinally displaceable and at the same time raised and lowered are, so that when they rest on a fabric part with their oppositely inclined and the fabric part facing tips engage in the fabric part. Relatively large mechanical expenditures are again required for the displacement of the strips arranged parallel to one another. In order to remove the gripped individual tissue pieces from the device and conveyed them to another location, special measures are again required, since the return of the strips equipped with the tips to their starting position cannot ensure that the tissue pieces are released.

Der Erfindung liegt die Aufgabe zugrunde, die einleitend genannte Vorrichtung so auszubilden, daß mit nur wenigen bewegbaren Hebeln sowohl das sichere Ergreifen des jeweils im Stapel obersten Gewebestückes oder Gewebesackes als auch das vollständige Freigeben des ergriffenen Teiles nach der Überführung an einen vorbestimmten Ablageort gewährleistet wird.The invention has for its object to design the device mentioned in the introduction so that with only a few movable levers, both the secure gripping of the topmost piece of tissue or tissue bag in the stack and the complete release of the gripped part after the transfer to a predetermined storage location is ensured.

Zur Lösung vorstehender Aufgabe sind die Bürsten der einleitend beschriebenen Vorrichtung an den freien Enden von im Abstand gehaltenen sowie mit einem Schwenkantrieb verbundenen Schwenkhebeln angeordnet und die freien Enden der Schwenkhebel mit den Bürsten zur Freigabe des jeweils erfaßten Gewebeteiles oder Gewebesackes bis über ihre Ausgangsstellung zum Erfassen des Gewebeteiles oder Gewebesackes hinaus in eine stärker angenäherte Position überführbar.To solve the above problem, the brushes of the device described in the introduction are arranged at the free ends of pivoted levers which are held at a distance and are connected to a pivoting drive, and the free ends of the pivoting levers with the brushes for releasing the respectively detected tissue part or tissue bag beyond their initial position for detecting the Tissue part or tissue bag can be transferred into a more approximate position.

Durch die vorgenannte Ausbildung wird bei Überführung der Bürsten in die Freigabestellung nicht nur der zwischen den zusammenwirkenden Bürsten befindliche Bereich des Gewebes entspannt, sondern durch die Tendenz der Bürsten, den zwischen ihnen befindlichen Gewebeteil zusammenzuschieben, die Haftwirkung zwischen dem Gewebeteil und den Bürsten aufgehoben, so daß das Gewebeteil allein aufgrund der eigenen Schwerkraft von den Bürsten freikommt und selbsttätig an dem neuen Bestimmungsort abgelegt wird.Due to the above-mentioned design, when the brushes are transferred to the release position, not only is the area of the tissue located between the interacting brushes relaxed, but also due to the tendency of the brushes to push the tissue part between them, the adhesive effect between the tissue part and the brushes is eliminated, so that the tissue part is released from the brushes solely due to its own gravity and is automatically deposited at the new destination.

Eine konstruktiv besonders einfache Ausführung ergibt sich, wenn die Schwenkhebel als doppelarmige Hebel ausgebildet und an einer höhenbeweglichen Traverse drehbar gelagert sind und wenn die den Bürsten abgekehrten Enden der Hebel über einen telkeskopartig wirkenden Schwenkantrieb miteinander verbunden sind. Als Schwenkantrieb kann dabei eine Kolbenzylinderanordnung vorgesehen sein.A particularly simple design results if the swivel levers are designed as double-armed levers and are rotatably mounted on a vertically movable cross member and if the ends of the levers remote from the brushes are connected to one another via a swivel drive acting like a telescope. A piston-cylinder arrangement can be provided as a swivel drive.

Der vorgenannte Antrieb für die Schwenkhebel ermöglicht ohne Schwierigkeiten die bereits genannte Überführung der Bürsten zur Freigabe des Gewebeteiles in eine Position, in der sie über ihre Ausgangsstellung beim Ergreifen des Gewebeteiles hinaus zusammengefahren werden können. Dabei kann zweckmäßigerweise den Schwenkhebeln eine Fedrungsanordnung, zugeordnet sein, welche die Schwenkhebel aus der Position zur Freigabe des erfaßten Gewebeteiles oder Gewebesackes in die Ausgangsposition zum Erfassen des Gewebeteiles oder Gewebesackes zu überführen sucht.The aforementioned drive for the swivel levers enables the aforementioned transfer of the brushes to release the tissue part into a position in which they can be moved together beyond their starting position when the tissue part is gripped without difficulty. In this case, the pivoting levers can expediently be assigned a spring arrangement, which attempts to transfer the pivoting levers from the position for releasing the detected tissue part or tissue bag to the starting position for detecting the tissue part or tissue bag.

Die beschriebene Vorrichtung ist nicht nur für das Erfassen` und Abheben von Gewebeteilen bzw. -säcken geeignet, sondern sie kann gemäß dem Anspruch 5 auch zum. Öffnen von Sackmündungen verwendet werden. Zum Öffnen der Sackmündungen ist es nicht erforderlich, daß die beiden in die gegenüberliegenden Gewebewandungen eingreifenden Vorrichtungen eine Bewegung senkrecht zur Ebene der Gewebewandungen ausführen, sondern es genügt, wenn nur ein Bürstenpaar diese Bewegung vollzieht und das andere Bürstenpaar in seiner Position gehalten wird.The device described is not only suitable for the detection and lifting of tissue parts or bags, but it can also be used according to claim 5. Open sack mouths can be used. To open the sack mouths, it is not necessary that the two devices engaging in the opposite tissue walls perform a movement perpendicular to the plane of the tissue walls, but it is sufficient if only one pair of brushes performs this movement and the other pair of brushes is held in position.

Die Zeichnung gibt ein Ausführungsbeispiel der Erfindung in schematischer Darstellung wieder.The drawing shows an embodiment of the invention in a schematic representation.

Es zeigen :

  • Fig. 1 eine Vorrichtung gemäß der Erfindung, mit der Gewebeteile oder -säcke von einem Stapel auf einen Ablagetisch überführbar sind, in Frontansicht,
  • Fig. 2 die Vorrichtung nach Fig. 1 mit Blick in Richtung des Pfeiles A,
  • Fig. 3 in vergrößerter Darstellung eine Einzelheit der Fig. 1, nämlich die Seitenansicht der eigentlichen Greiferanordnung in ihrer Ausgangsstellung,
  • Fig. 4 die Anordnung nach Fig.3 in der Greifsteilung,
  • Fig. 5 die Anordnung nach Fig. 3 in der Freigabestellung.
Show it :
  • 1 shows a device according to the invention, with which tissue parts or bags can be transferred from a stack to a storage table, in a front view,
  • 2 shows the device of FIG. 1 with a view in the direction of arrow A,
  • 3 an enlarged view of a detail of FIG. 1, namely the side view of the actual gripper arrangement in its starting position,
  • 4 shows the arrangement according to FIG. 3 in the gripping division,
  • Fig. 5 shows the arrangement of FIG. 3 in the release position.

In dem dargestellten Beispiel der Fig. 1 und 2 ist an einem Träger 11 eine in dessen Längsrichtung verfahrbare Hubeinrichtung 12 gehalten, die an ihrem freien, dem Träger 11 abgekehrten Ende gemäß Fig. 2 mit einem Tragbalken 13 verbunden ist, der seinerseits an den Enden jeweils mit einer insgesamt mit 14 bezeichneten gleichartigen Greifvorrichtung ausgerüstet ist.In the example shown in FIGS. 1 and 2, a lifting device 12 which is movable in its longitudinal direction is held on a carrier 11 and is connected at its free end facing away from the carrier 11 according to FIG. 2 to a supporting beam 13, which in turn is at the ends is each equipped with a similar gripping device, generally designated 14.

In dem Beispiel ist die Hubeinrichtung 12 als Kolbenzylinderanordnung ausgeführt, deren Kolbenstange mit dem Tragbalken 13 verbunden ist. In der Fig. 1 ist die in Richtung des Doppelpfeiles 17 an dem Tragbalken 11 befestigte Hubeinrichtung 12 mit den zugeordneten Greifvorrichtungen 14 in ausgezogenen Linien oberhalb eines Stapels 8 wiedergegeben und in gestrichelten Linien in einer Position oberhalb eines Ablegetisches 16 dargestellt. Die Greifvorrichtungen 14 sind in dem wiedergegebenen Beispiel jeweils mit zwei gegeneinander hin- und herbewegbaren Bürsten 18 und 19 ausgerüstet, deren Ausbildung und Betätigung im einzelnen noch in Verbindung mit den Fig. 3 bis 5 beschrieben wird.In the example, the lifting device 12 is designed as a piston-cylinder arrangement, the piston rod of which is connected to the supporting beam 13. In Fig. 1, the lifting device 12 fastened in the direction of the double arrow 17 to the supporting beam 11 with the associated gripping devices 14 is shown in solid lines above a stack 8 and shown in dashed lines in a position above a deposit table 16. In the example shown, the gripping devices 14 are each equipped with two brushes 18 and 19 which can be moved back and forth, the design and operation of which are described in detail in connection with FIGS. 3 to 5.

Im linken Teil der Fig. 1 ist erkennbar, daß die Bürsten 18 und 19 das oberste Gewebeteil 8a oder den obersten Gewebesack von dem Stapel 8 ergriffen und abgehoben haben, um ihn in die im rechten Teil der Fig. 1 wiedergegebene Stellung oberhalb des Ablegetisches 16 zu überführen.In the left part of FIG. 1 it can be seen that the brushes 18 and 19 have gripped the top fabric part 8a or the top fabric bag from the stack 8 and lifted it up to the position shown in the right part of FIG. 1 above the deposit table 16 to convict.

Die Ausbildung der Greifvorrichtungen ergibt sich aus den Fig. 3 bis 5. In diesen Figuren sind die Greifvorrichtungen 14 ohne eine äußere Umkleidung wiedergegeben, um die Funktionsfähigkeit besser zu erläutern.The design of the gripping devices results from FIGS. 3 to 5. In these figures, the gripping devices 14 are shown without an outer casing in order to better explain the functionality.

Man erkennt, daß die Bürsten 18 und 19 an den unteren freien Enden der Schwenkhebel 20 befestigt sind, die als doppelarmige Hebel ausgebildet und über Schwenkachsen 22 bzw. 23 an einer Traverse 21 gehalten sowie an ihren den Bürsten 18 und 19 abgekehrten Enden über einen teleskopartig wirkenden Schwenkantrieb 24 miteinander verbunden sind. Der teleskopartig wirkende Schwenkantrieb 24 greift über Anlenkstellen an den oberen Enden der doppelarmigen Schwenkhebel 20 an und ist in dem dargestellten Beispiel als beidseitig beaufschlagbare Kolbenzylinderanordnung ausgebildet. Bei Betätigung der Kolbenzylinderanordnung werden die Bürsten 18 und 19 aufeinander zu oder voneinander weg bewegt, um die in den Fig. 4 und 5 wiedergegebenen Stellungen zu erreichen.It can be seen that the brushes 18 and 19 are fastened to the lower free ends of the pivot levers 20, which are designed as double-armed levers and are held on a crossbar 21 via pivot axes 22 and 23, and at their ends remote from the brushes 18 and 19 via a telescope acting swivel drive 24 are interconnected. The telescoping swivel drive 24 engages via articulation points at the upper ends of the double-armed swivel lever 20 and, in the example shown, is designed as a piston-cylinder arrangement which can be acted upon on both sides. When the piston-cylinder arrangement is actuated, the brushes 18 and 19 are moved towards or away from one another in order to achieve the positions shown in FIGS. 4 and 5.

Wenn die Schwenkachsen 22 und 23 für die doppelarmigen Schwenkhebel 20 nicht in ortsfest gehaltenen Tragteilen, beispielsweise einer Umkleidung der Greifanordnungen 14 gelagert sind, muß zur Erzielung der Bewegungssymmetrie der beiden Bürsten 18 und 19 bei Betätigung des Schwenkantriebes 24 ein zusätzlicher Diagonallenker 25 vorgesehen sein, welcher an den doppelarmigen Schwenkhebeln 20 angelenkt ist.If the swivel axes 22 and 23 for the double-armed swivel levers 20 are not stored in stationary supporting parts, for example a casing of the gripping arrangements 14, an additional diagonal link 25 must be provided to achieve the symmetry of movement of the two brushes 18 and 19 when the swivel drive 24 is actuated, which is articulated on the double-armed pivot levers 20.

Die in den Fig. 1 bis 5 wiedergegebenen Bürsten 18 und 19 sind als ebene Bürsten mit Stahlborsten 26 ausgebildet, d. h. ihre Stahlborsten 26 enden in einer gemeinsamen Ebene. Die Figuren lassen erkennen, daß die Stahlborsten 26 der Bürste 18 mit ihren freien Enden in der einen Richtung und die Stahlborsten 26 der Bürste 19 mit ihren freien Enden in der entgegengesetzten Richtung geneigt verlaufen. Der geneigte Verlauf der freien Enden der Stahlborsten 26 entspricht dabei der Eingriffsrichtung der Bürsten 18 bzw. 19 in das zu erfassende flachliegende Gewebeteil bzw. den Gewebesack 8a.The brushes 18 and 19 shown in FIGS. 1 to 5 are designed as flat brushes with steel bristles 26, i. H. their steel bristles 26 end in a common plane. The figures show that the steel bristles 26 of the brush 18 with their free ends in one direction and the steel bristles 26 of the brush 19 with their free ends in the opposite direction are inclined. The inclined course of the free ends of the steel bristles 26 corresponds to the direction of engagement of the brushes 18 and 19 in the flat-lying tissue part or the tissue bag 8a to be detected.

Um einen Verschleiß der Bürsten 18, 19 zu verhindern, können die Stahlborsten 26 an ihren freien Enden gehärtete und geschliffene Spitzen aufweisen. Die Bürsten 18, 19 sind austauschbar an den ihnen zugeordneten Schwenkhebeln 20 gehalten, damit sie ausgewechselt und bei Verschleiß ersetzt werden können. Auf diese Weise besteht die Möglichkeit, Bürsten 18, 19 mit Stahlborsten 26 unterschiedlichen Abstandes und unterschiedlicher Steifigkeit zu verwenden, je nach Struktur des durch die Bürsten 18, 19 zu erfassenden Gewebeteiles bzw. Gewebesackes. Zum Erfassen von Kunststoff-Gewebesäcken haben sich Bürsten bewährt, deren Stahlborsten so eng angeordnet sind, daß mindestens auf 4 mm2 eine Stahlborste vorgesehen ist und die Bürste eine Abmessung aufweist von mindestens 4 cm2, so daß an einer Angriffsstelle der Bürste mehr als 100 Borsten zum Eingriff in die Gewebeoberfläche kommen.In order to prevent wear of the brushes 18, 19, the steel bristles 26 can have hardened and ground tips at their free ends. The brushes 18, 19 are held interchangeably on the swivel levers 20 assigned to them, so that they can be replaced and replaced when worn. In this way it is possible to use brushes 18, 19 with steel bristles 26 of different spacing and different rigidity, depending on the structure of the tissue part or tissue bag to be gripped by the brushes 18, 19. Brushes whose steel bristles are arranged so closely that at least 4 mm 2 of steel bristle is provided and the brush has a dimension of at least 4 cm 2 have proven useful for grasping plastic fabric bags, so that more than 100 at a point of attack of the brush Bristles come into contact with the tissue surface.

Zum Erfassen eines flachliegenden Gewebeteiles, welches in den Fig. 3 und 4 wiederum mit 8a bezeichnet ist, werden die Bürsten 18 und 19 in der Position gemäß Fig. 3 auf das Gewebeteil 8a abgesenkt und bei gleichzeitigem Andruck auf das Gewebeteil 8a durch Betätigung der Kolbenzylinderanordnung 24 in die in Fig. 4 wiedergegebene. Stellung überführt. Hierdurch erfolgt eine Straffung des zwischen den Bürsten 18 und 19 befindlichen Abschnittes des Gewebeteiles 8a und ein kraftschlüssiges Erfassen des Gewebeteiles durch die Stahlborsten 26 der Bürsten 18 und 19. In dieser Stellung gemäß Fig. 4 kann das Gewebeteil 8a von seiner Unterlage, beispielsweise von dem in Fig. 1 wiedergegebenen Stapel 8, abgehoben und auf den Ablagetisch 16 überführt werden. Zum Ablegen des Gewebeteiles 8a erfolgt eine Überführung der Bürsten 18 und 19 mittels der Kolbenzylinderanordnung 24 in die in Fig. 5 wiedergegebene Position. Dadurch, daß die Bürsten 18 und 19 gegeneinander bewegt werden, kommen die Stahlborsten 26 der Bürsten 18 und 19 außer Eingriff mit der Oberfläche des Gewebeteiles 8a, so daß das Gewebeteil 8a von den Stahlborsten 26 der Bürsten 18 und 19 freikommt und abgelegt werden kann. Die Fig. 5 zeigt, daß zur Freigabe des Gewebeteiles die Bürsten 18 und 19 in eine stärker angenäherte Position überführt werden, als dies gemäß Fig. 6 beim Erfassen des Gewebeteiles 8a der Fall ist. In der Position der Bürsten 18 und 19 gemäß Fig. 5 gelangt das Gewebeteil 8a allein aufgrund der Schwerkraft außer Einwirkung mit den Stahlborsten 26 der vorgenannten Bürsten 18, 19, so daß irgendwelche Manipulationen für die Freigabe des Gewebeteiles 8a nicht erforderlich sind.3 and 4 are again designated 8a, the brushes 18 and 19 are lowered into the position according to FIG. 3 on the fabric part 8a and with simultaneous pressure on the fabric part 8a by actuating the piston-cylinder arrangement 24 into that shown in FIG. 4. Position transferred. This results in a tightening of the section of the fabric part 8a located between the brushes 18 and 19 and a force-fit grasping of the fabric part by the steel bristles 26 of the brushes 18 and 19. In this position according to FIG in Fig. 1 stack 8, lifted and transferred to the tray table 16. To deposit the fabric part 8a, the brushes 18 and 19 are transferred into the position shown in FIG. 5 by means of the piston-cylinder arrangement 24. Characterized in that the brushes 18 and 19 are moved against each other, the steel bristles 26 of the brushes 18 and 19 come out of engagement with the surface of the fabric part 8a, so that the fabric part 8a is released from the steel bristles 26 of the brushes 18 and 19 and can be deposited. FIG. 5 shows that to release the tissue part, the brushes 18 and 19 are moved into a more approximated position than is the case according to FIG. 6 when the tissue part 8a is gripped. In the position of the brushes 18 and 19 according to FIG. 5, the fabric part 8a comes out of the action of the steel boron solely due to gravity Most 26 of the aforementioned brushes 18, 19, so that any manipulations for the release of the tissue part 8a are not required.

Um eine Rückstellung der doppelarmigen Schwenkhebel 20 bzw. der Bürsten 18 und 19 von der Position gemäß Fig. 5 in die Ausgangsstellung gemäß Fig. 3 auch ohne eine komplizierte Steuerung zu erreichen, ist in dem Ausführungsbeispiel der Fig. 3 bis 5 an der Traverse 21 eine Federungsanordnung 27 vorgesehen, die bei Freigabe der Kolbenzylinderanordnung 24 in der Position gemäß Fig. 5 durch die in dieser Position gespannte Feder 27a und den unter der Wirkung dieser Feder stehenden Rückführbolzen 27b auf den in den Figuren 3 bis 5 rechten doppelarmigen Schwenkhebel 20 einwirkt und diesen in die in Fig. 3 dargestellte Position rückschwenkt.In order to achieve a return of the double-armed swivel levers 20 or the brushes 18 and 19 from the position according to FIG. 5 to the starting position according to FIG. 3 even without complicated control, in the exemplary embodiment of FIGS. 3 to 5 the crossmember 21 a spring arrangement 27 is provided, which acts upon release of the piston-cylinder arrangement 24 in the position according to FIG. 5 by the spring 27a tensioned in this position and the return bolt 27b under the action of this spring on the right-hand double-arm pivot lever 20 in FIGS. 3 to 5 and this swings back into the position shown in FIG. 3.

Vorrichtungen der in den Fig. 1 bis 5 wiedergegebenen Ausbildung haben sich in Dauerversuchen zur Vereinzelung von Gewebesäcken durch Abheben des jeweils obersten Sackes eines Stapels bereits außerordentlich bewährt.Devices of the design shown in FIGS. 1 to 5 have already proven extremely useful in long-term trials for separating tissue bags by lifting off the top sack of a stack.

Wie aus den Fig. 1 bis 5 hervorgeht, ist es zweckmäßig, bei der Erfassung größerer Gewebeteile bzw. von Säcken die Bürsten 18, 19 jeweils im Bereich der Ecken des zu erfassenden Gewebeteiles oder Gewebesackes 8a zum Eingriff in das Gewebeteil vorzusehen. Hierdurch wird eine Straffung des gesamten Gewebeteiles bzw. Gewebesackes 8a erreicht, so daß dieser in die jeweils gewünschte Stellung mittels der beschriebenen Einrichtung überführt werden kann.As is apparent from FIGS. 1 to 5, it is expedient to provide the brushes 18, 19 in the region of the corners of the tissue part or tissue bag 8a to be engaged in the engagement of the tissue part in the detection of larger tissue parts or sacks. As a result, the entire tissue part or tissue bag 8a is tightened so that it can be transferred to the desired position by means of the described device.

Die beschriebenen Anordnungen gemäß den Fig. 1 bis 5 sind nicht nur zum Anheben und Vereinzeln von Gewebeteilen bzw. Gewebesäcken geeignet, sondern sie können auch zum Öffnen von Sackmündungen vorgesehen sein. Hierzu sind zwei Anordnungen gemäß den Fig. 1 bis 5 mit je zwei gegeneinander hin- und herbewegbaren Bürsten 18 und 19 vorgesehen, die die Gewebewandungen des im flachliegenden Zustand befindlichen Sackes in Richtung senkrecht zu ihrer Ebene bewegen und damit voneinander entfernen, so daß eine entsprechende Öffnung des Sackes an dessen Mündung erreicht wird. Dabei.genügt es, wenn nur ein Bürstenpaar 18, 19 über eine entsprechende Hubeinrichtung bewegt wird, während das andere Bürstenpaar lediglich zur Erzielung des Eingriffes gegeneinander hin- und herbewegbar gehalten wird.The arrangements described according to FIGS. 1 to 5 are not only suitable for lifting and separating tissue parts or tissue bags, but they can also be provided for opening sack openings. For this purpose, two arrangements according to FIGS. 1 to 5 are provided, each with two brushes 18 and 19 that can be moved back and forth, which move the fabric walls of the sack in the flat state in the direction perpendicular to its plane and thus remove it from one another, so that a corresponding one Opening of the sack at the mouth is reached. It is sufficient if only one pair of brushes 18, 19 is moved via a corresponding lifting device, while the other pair of brushes is only held back and forth so as to achieve the engagement.

Claims (5)

1. A device for picking up individual textile parts or textile bags, lying flat and preferably of plastics, for lifting or removing from a stack (8), in which at least two brushes (18, 19), which can be pressed against the stack and engaging in the uppermost textile part (8a) or the uppermost textile bag, are held so as to be movable towards and away from each other on a lifting and pivot arrangement (12), wherein the brushes have steel bristles (26), which extend inclinedly in the engagement direction at least in the region of their free ends, characterized in that the brushes (18, 19) are arranged at the free ends of pivot levers (20) which are held at a spacing and connected to a pivot drive (24), and in that the free ends of the pivot levers (20) with the brushes (18, 19) for the release of the actual picked-up textile part (8a) or textile bag can be transferred beyond its initial position for picking up the textile part or textile bag to a much closer position.
2. A device according to Claim 1, characterized in that the pivot levers (20) are constructed as double-armed levers and are pivoted at a vertically-movable bar (21) and in that the ends of the levers (20) remote from the brushes (18, 19) are connected together via a pivot drive (24) acting telescopically.
3. A device according to Claim 1 and 2, characterized in that a piston-and-cylinder arrangement is provided as the pivot drive (24).
4. A device according to any one of Claims 1 to 3, characterized in that a spring arrangement (27) is associated with the pivot levers (20), which tends to transfer the pivot levers (20) out of the position for the release of the picked-up textile part (8a) or textile bag into the initial position for picking up the textile part or textile bag.
5. A device according to any one of Claims 1 to 4, characterized in that for opening bag mouths two said devices are respectively associated with the opposite textile walls and are arranged to be opposedly movable at right angles to the plane of the textile walls.
EP85116338A 1985-01-04 1985-12-20 Device for picking up single spread out fabrics, preferably plastic fabrics Expired EP0187351B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85116338T ATE41401T1 (en) 1985-01-04 1985-12-20 DEVICE FOR DETECTING INDIVIDUAL FLAT PIECE OF FABRIC, PREFERABLY MADE OF PLASTIC.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3500140 1985-01-04
DE3500140 1985-01-04

Publications (2)

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EP0187351A1 EP0187351A1 (en) 1986-07-16
EP0187351B1 true EP0187351B1 (en) 1989-03-15

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Application Number Title Priority Date Filing Date
EP85116338A Expired EP0187351B1 (en) 1985-01-04 1985-12-20 Device for picking up single spread out fabrics, preferably plastic fabrics

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EP (1) EP0187351B1 (en)
AT (1) ATE41401T1 (en)
DE (1) DE3568762D1 (en)

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DE10357913A1 (en) * 2003-12-11 2005-07-14 Weinmann Holzbausystemtechnik Gmbh Porous material e.g. foam material, transporting equipment, has retaining mechanism with plug-in unit that is flexible and is arranged within range such that unit allows laminar arrangement to hold material within plate
CN103818743A (en) * 2014-03-18 2014-05-28 刘才平 Automatic material grasping mechanism for automotive trim ceiling lining
EP3017940A1 (en) * 2014-11-04 2016-05-11 Starlinger & Co. Gesellschaft m.b.H. Method and a device for the production of bags from tubular bag bodies

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CA1322946C (en) * 1987-11-30 1993-10-12 Nippon Sheet Glass Co., Ltd. Method and apparatus for manufacturing laminated glass
GB9200860D0 (en) * 1992-01-15 1992-03-11 Leicester Polytechnic Handling pieces of textile fabric
SE501300C2 (en) * 1993-05-27 1995-01-09 Tage Bjoerkloef Device for automatic capture of soft, cordless items, type of towels, from a stack
CN1075014C (en) * 1995-09-29 2001-11-21 布勒公司 Device for automatically suspending sacks
IT1308892B1 (en) * 1999-05-07 2002-01-11 Tai Tecnologia Automazione Inn EQUIPMENT AND PROCEDURE FOR LEAVING A STACK OF LEAVES FOR LAMINATED GLASS.
US8353146B1 (en) 2008-08-11 2013-01-15 In-Store Bagging Machine Company, LLC Ice bagging assembly
US8528302B1 (en) * 2009-04-10 2013-09-10 In-Store Bagging Machine Company, LLC Ice bagging device
DE102015005660A1 (en) * 2015-04-27 2016-10-27 Beumer Gmbh & Co. Kg Device and method for aligning and gripping a bag
JP7248704B2 (en) * 2018-01-15 2023-03-29 インワテック エーピーエス Method and grip for gripping, moving and releasing a piece of cloth using a grip

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FR1348799A (en) * 1963-02-19 1964-01-10 Schiesser Ag Trikotfabriken Device for picking up and depositing pieces of fabric that can be stitched
DE2160437A1 (en) * 1971-12-06 1973-06-14 Ivanhoe Research Corp Fabric pieces destacking machine - with single feed grippers having barbed feet
DE3319901A1 (en) * 1983-06-01 1984-12-06 Haver & Boecker, 4740 Oelde Device for the opening and transfer to a filler neck of sacks which are open at the top

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10357913A1 (en) * 2003-12-11 2005-07-14 Weinmann Holzbausystemtechnik Gmbh Porous material e.g. foam material, transporting equipment, has retaining mechanism with plug-in unit that is flexible and is arranged within range such that unit allows laminar arrangement to hold material within plate
CN103818743A (en) * 2014-03-18 2014-05-28 刘才平 Automatic material grasping mechanism for automotive trim ceiling lining
EP3017940A1 (en) * 2014-11-04 2016-05-11 Starlinger & Co. Gesellschaft m.b.H. Method and a device for the production of bags from tubular bag bodies
WO2016071261A1 (en) * 2014-11-04 2016-05-12 Starlinger & Co Gesellschaft M.B.H. Method and device for producing bags from tubular bag bodies
CN107073862A (en) * 2014-11-04 2017-08-18 史太林格有限责任公司 Method and apparatus for producing sack from tubular bag body
CN107073862B (en) * 2014-11-04 2019-06-21 史太林格有限责任公司 For the method and apparatus from tubular bag body production sack

Also Published As

Publication number Publication date
EP0187351A1 (en) 1986-07-16
ATE41401T1 (en) 1989-04-15
DE3568762D1 (en) 1989-04-20

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