EP1571089B1 - Clipsupplyer - Google Patents

Clipsupplyer Download PDF

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Publication number
EP1571089B1
EP1571089B1 EP05004723A EP05004723A EP1571089B1 EP 1571089 B1 EP1571089 B1 EP 1571089B1 EP 05004723 A EP05004723 A EP 05004723A EP 05004723 A EP05004723 A EP 05004723A EP 1571089 B1 EP1571089 B1 EP 1571089B1
Authority
EP
European Patent Office
Prior art keywords
clip
drive
drive elements
feed
feeder according
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.)
Not-in-force
Application number
EP05004723A
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German (de)
French (fr)
Other versions
EP1571089A1 (en
Inventor
Klaus Töpfer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Poly Clip System GmbH and Co KG
Original Assignee
Poly Clip System GmbH and Co KG
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Filing date
Publication date
Application filed by Poly Clip System GmbH and Co KG filed Critical Poly Clip System GmbH and Co KG
Publication of EP1571089A1 publication Critical patent/EP1571089A1/en
Application granted granted Critical
Publication of EP1571089B1 publication Critical patent/EP1571089B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/04Applying separate sealing or securing members, e.g. clips
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/53Means to assemble or disassemble
    • Y10T29/53039Means to assemble or disassemble with control means energized in response to activator stimulated by condition sensor
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/53Means to assemble or disassemble
    • Y10T29/53039Means to assemble or disassemble with control means energized in response to activator stimulated by condition sensor
    • Y10T29/53048Multiple station assembly or disassembly apparatus
    • Y10T29/53052Multiple station assembly or disassembly apparatus including position sensor
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/53Means to assemble or disassemble
    • Y10T29/53039Means to assemble or disassemble with control means energized in response to activator stimulated by condition sensor
    • Y10T29/53061Responsive to work or work-related machine element
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/53Means to assemble or disassemble
    • Y10T29/53709Overedge assembling means
    • Y10T29/53783Clip applier

Definitions

  • the invention relates to a clip feed having an input end (short: input) and an output end (short: output) having magazine bar for guiding a clip strand from a clip supply to a separating device of a closing and with a arranged in the region of the magazine bar clip drive.
  • closing device for the production of sausages with a mostly pasty filling in a flexible tubular casing (for example, a gut).
  • These closing devices usually function in such a way that the filled tubular casing closed on one side is constricted at one point by means of so-called displacement elements and the filling material located in the constricting region is then displaced by a movement in the direction of the tube axis.
  • At least one closure element (or clip) is attached and closed on the hose plait thus formed.
  • the simplest known clip feeders consist of a substantially vertically arranged magazine bar on which a "finite" strand of clips consisting of a plurality of successively lined up and connected by a sealing tape clips is drawn up by hand.
  • the magazine rod is deflected in a radius at its lower end, which is close to the closing device, in such a way that the clip strand is fed horizontally to a separating window of the closing device which is usually arranged vertically.
  • the foremost clip in the feed direction is separated from the clip strand for further processing.
  • the feed is usually generated by gravity in this clip feed.
  • the maximum stock of clips is dictated by the capacity of the magazine bar. Since this is arranged vertically due to the gravity drive and its input for the purpose of manual winding of the clip strands must be easily accessible, their length and thus capacity is very limited. It is limited suitable for fast-acting closing devices, as a constant, manual Nachmagazinieren would be required.
  • a further developed, likewise known clip feed is distinguished by the fact that the clip strand is wound up on a spool suspended above the singling window, also for reasons of hygiene, to form a larger clip supply.
  • the quasi "endless" clip strand is subtracted from this spool and inserted into the entrance of a magazine bar.
  • the geometry of the magazine bar is substantially similar to that of the magazine bar described above, but due to the coil supply no longer has to fulfill the function of stock formation. The vertical part of the magazine bar can therefore be shorter.
  • the feed is usually generated in this clip supply by an active, acting in the region of the magazine bar on the clip strand clip drive.
  • an active acting in the region of the magazine bar on the clip strand clip drive.
  • the required driving force can be introduced via two friction rollers, which are in contact with the clip strand on opposite sides and act permanently or intermittently.
  • a drive can be provided in which a linearly movable back and forth, acting on the clip strand carrier generates incremental feed.
  • a clip feed with such a drive is shown for example in US 5,586,424 A.
  • a development of this drive provides two linear reciprocating driver, which alternately produce incremental feed.
  • the clip supply is used up, ie unwinding the spool, a remaining strand of the clip remains between the bobbin and the entrance of the magazine bar, which, as a loose end, bends over the entrance of the magazine bar for lack of guidance or is tilted so that it is no longer in the entrance of the magazine bar threading.
  • the closing device is stopped because then the drive can no longer attack on the remaining located in the magazine bar clip strand, and thus no more feed is guaranteed.
  • the empty bobbin has to be pulled down from its holder and the remaining clip strand has to be pulled out of the magazine bar counter to the feed direction. so that the beginning of a new clip strand can be threaded so that the drive elements of the clip drive can attack on this.
  • the object is achieved by a clip feeder of the type mentioned, the two consecutively with the clip strand alternately engageable and thus configured drive elements, that a first engaged drive element runs on a first circular segment feed path in the feed direction, while a second disengaged located drive element on a second circular segment-shaped feed path of the feed direction and that the engagement and the running direction of the drive elements is reversible, wherein the first and the second feed path have the same axis of rotation about which the drive elements are pivotable back and forth.
  • feed path is meant the path along the predetermined by the magazine bar guide rail over which the engaged drive element initiates its advance on the clip strand. Consequently, the invention requires that the magazine bar has a circular segment-shaped section. Between the two arranged one behind the other, ie in Feed direction spaced drive elements, a time buffer is created, which gives an operator enough opportunity depending on the clip consumption and the distance between the drive elements (buffer supply or buffer line) to renew the clip supply, while the closing device can continue working.
  • the clip feeder according to the invention allows to introduce the beginning of the new clip strand into the engagement region of the drive element first coming in the feed direction, while the second drive element located behind it furthers the end of the old clip strand.
  • the beginning of the new clip string can be brought under the disengaged drive element through to the end of the old clip strand while it is further promoted in the feed direction by the drive element engaging thereon. Thereafter, by (manually triggered) reversing, the engagement and the direction of rotation of both drive elements are reversed.
  • the previously disengaged drive element now engages the new clip strand and drives it together with the old clip strand in the same feed direction, while the previously engaged drive element "empty" runs back against the feed direction. In this way, no gap is created during the change, since the new clip strand brought to the end of the old clip strand, the buffer pool was filled up to a certain extent again. Service life can therefore be avoided. Due to the circular segment shape of both feed paths and their coaxiality, it is possible to use a pivot drive for the movement of the drive elements, which benefits the compactness of the clip feed.
  • the drive elements on pawls with a freewheeling direction in the feed direction and a reverse direction against the feed direction.
  • the engagement reversal is passive automatically depending on the direction.
  • the position limit switches are each further adapted to trigger the extension of the drive element whose direction is reversed in the feed direction, and to trigger the retraction of the drive element whose direction is reversed in the direction opposite to the feed direction.
  • first and second circular segment-shaped feed path are substantially congruent and are formed by an approximately semicircular portion of the magazine bar, one end of which forms the entrance, in which the clip strand can be fed from below.
  • This embodiment is particularly advantageous in terms of optimal space utilization at maximum length of the magazine bar.
  • the geometry of the magazine bar allows insertion of the clip strand in the entrance from below, whereby the remaining end of a unwound from the coil line of clips substantially perpendicular to the insertion direction depends downwards and therefore can be used up completely.
  • two mutually arranged clip feeders whose axes of rotation are aligned coaxially, assembled into a double-clip feed.
  • the magazine bar 100 according to the invention shown in FIG. 1 is composed of several structural elements.
  • this has an outer guide rail 110 whose cross-section, as shown in FIG. 5, substantially corresponds to the open cross-sectional profile of a U-shaped (pre-bent closure clip) (clip) 510.
  • an inner guide rail 112 is positioned, which includes a gap 114 with the outer guide rail 110. The gap corresponds approximately to the thickness of the clip wire, so that the clip strand is securely guided between the two guide rails 110 and 112 in the manner shown in Fig. 5.
  • the inner guide rail 112 continues on the right side of the magazine bar 100 shown in FIG.
  • the suspension 116 functionally in a suspension 116, which at the same time forms the central component for the entire magazine bar 100 in the manner described below.
  • the outer guide rail 110 and the inner guide rail 112 are connected to one another in such a way by means of three connecting elements 118 that precisely that gap 114 is formed.
  • the suspension 116 has two spokes 121, 122 extending to the center of an upper, approximately semicircular portion 120 of the magazine bar 100, which are connected to a receptacle 123 in this center.
  • the entire magazine bar 100 can be pivotally attached to a, not shown, corresponding holder about the rotational axis of symmetry (short axis of rotation) of that semicircular portion 120.
  • a fastening element 125 is provided for locking the magazine bar 100 in an operating position on the closing device.
  • the magazine bar 100 consists of three functional sections: the first deflection forming semicircular section 120, downstream of the first deflection the straight, in operation in the Substantially vertically disposed portion 124 and further downstream of a second deflection forming part-circular portion 126th
  • the first deflection 120 is configured such that the entrance 130 of the magazine bar 100 points downwards - or in other words - from below with a clip strand can be equipped. It is not important that the magazine bar 100 begins with a vertical section, but that the magazine bar 100 in the entrance area has such an orientation that the threading of a loose or free end of a clip strand is ensured in the entrance 130.
  • the orientation of the magazine bar in the entrance area is illustrated by a tangent 132 to the semicircular section 120, more precisely to a guideway formed by the gap 114. Since the clip strand - as mentioned above - typically consists of a plurality of juxtaposed individual clips, which are connected in the region of their back 512 (see Fig.
  • the free end of the clip strand will depend on gravity hanging vertically downwards. This closes the free end of the clip strand whose orientation is symbolized by a vertical 134, with the tangent 132 an intermediate angle 136, which in any case must not exceed the level at which the threading of the free end of the clip strand is no longer guaranteed.
  • the first deflection is formed by a semi-circular section 120 as shown in FIG. For example, it may also be divided into individual circular sections with sections of different types in between.
  • the vertical portion 124 of the clip strand is guided downstream downstream of the first deflection down.
  • it has a length and inclination which is determined by the dimensions of the coils and the closing machine.
  • the clip strand is again deflected by means of the part-circular portion 126.
  • This section runs with a substantially horizontal tangent, so that the magazine bar 100 opens at a right angle with its exit 128 into the (not shown here) substantially vertically arranged separation window of the closing device.
  • the clip coil holder 200 shown in FIG. 2 and corresponding to the magazine bar 100 is suitable, for example, for mounting on the upper side of the housing of a closing device. It has a base 210, with which it can be flanged to an upper housing surface of the closing device. At its upper, the base opposite end, it has an axis 212. On this axis 212, a spool receptacle 214 is rotatably mounted.
  • FIG. 5 shows an arrangement in plan view, which shows that in a symmetrical embodiment of the clip coil holder 200, two clip coils 512, 513 can be plugged axially from opposite sides onto corresponding receptacles 214. These coils are secured by springs 514 against accidental slipping from the spool recordings.
  • the pair 300 of coupled drive elements 310, 312 shown in FIG. 3 consists of those drive elements 310, 312 which each have engagement surfaces 311, 313 engageable with the clip strand, not shown here, and a common arm 314, on which both drive elements 310, 312 are attached.
  • the drive elements are forked in the engagement region, so that they can embrace the inner guide rail 112 and engage symmetrically on the strip of clips 510.
  • the engagement surfaces may be jagged, roughened or rubberized, so that either a friction or positive entrainment of the clip strand comes into consideration.
  • the drive elements 310, 312 have the engagement surfaces opposite bearings 318 and 320 for attachment to the arm 314, which allow both a pivotal movement of the drive elements and a non-independent linear movement of the drive elements in the radial direction.
  • the drive elements also each have a curve 326, 328 on their end opposite the engagement surfaces.
  • Two springs 322, 324 abut these curves.
  • the curves are shaped so that the springs by their spring force exert a moment on the drive elements 310, 312, which forces them in their rest position in an upright (not pivoted away) position. An unillustrated stop ensures that this position can not be exceeded and thus a reverse direction is specified.
  • the drive elements can be pivoted away against the spring force. They therefore act like pawls. Due to the mirror-symmetrical structure, the freewheeling direction corresponds to one of the locking direction of the other pawl of the same pair 300.
  • the springs 322, 324 further cause the drive elements 310, 312 are pressed radially outward against the clip strand, see.
  • they ensure length or tolerance compensation and at the same time provide the necessary pressure against the clips in order to ensure reliable advancement.
  • the arm 314 connects the drive elements 310, 312 with a hub 315, which is composed of an axle-fixed part 316 and a radially movable part 317 and whose pivot axis is substantially equal to the engagement surfaces 311, 313 of both drive elements.
  • the pivot axis coincides with the axis 212 of the coil receptacle 214 and the axis of rotation of the magazine bar receptacle 122 in the exemplary embodiment shown here. The resulting from this arrangement advantage will be apparent from the taking place with reference to Figs. 6 to 8 functional description.
  • the radially movable member 317 which is connected to the arm 314, is shown in an axially spaced apart from the 316 part, extended position in which the drive elements 310, 312 abut the clip strand.
  • the radially movable part 317 can - for example by a pneumatic drive operated either manually or automatically - be moved up and down on the axle-fixed part 316. As a result, the drive elements of this pair are together radially retracted or extended and brought into or out of engagement with the clip strand.
  • a handle 330 is attached to the arm 314, which allows a manual displacement of the pair of coupled drive elements 300, including hub 315.
  • FIG. 4 shows an arrangement of two pairs of coupled drive elements 300 and 400 in plan view. These are aligned coaxially with each other, i. that the pivot axes 440 of their hubs fall together. They are further constructed in an identical manner, but laterally reversed against each other so arranged that the drive elements 310, 312 and 410, 412 in two parallel planes perpendicular to the pivot axis 440 are adjacent to each other. In other words, the driving elements 310 and 410 and 312 and 412 respectively act in the same plane, i. on the same clip strand.
  • the double-level arrangement makes the clip drive 450 shown here suitable for use in a so-called double-clip feed 500.
  • a wound onto a bobbin 512, 513, the clip strand is unrolled obliquely down and fed via an associated pulley 516 and 518 respectively the input 130 of the respective associated magazine bar 100, as shown in Fig. 6, respectively.
  • the deflection rollers 516, 518 are conically tapered in the direction of the median plane between the clip feeders, so that the clip strand 511 is directed onto the respective magazine bar 110 during unwinding in the axial direction.
  • the two pairs of coupled drive elements 300 and 400 are each in an end position of their pivotal movement, in which the respective upper drive element 312 or 410 has arrived at the input area and thus at the beginning of its feed path.
  • feed path is meant the path along the predetermined by the magazine bar 100 and the gap 114 guide rail over which the engaged drive element initiates its advance on the clip strand. Accordingly, in this position, the respective lower drive element 310 and 412 has reached the end of its feed path.
  • the drive element initially reached in this end position triggers the reversal of the pivoting direction of both pairs of coupled drive elements.
  • a position limit switch (not shown) is provided at each end position of the double clip feed 500.
  • This each feed path associated, a total of two position limit switches can be actuated by both pairs of coupled drive elements, for example, of a section, a cam or a projection of the respective arm 314 or the associated hub 315.
  • the two position limit switches are preferably connected via a common control with both drives, so that always the first operated position limit switch triggers the direction reversal of all drive elements.
  • the change between the blocking and freewheeling property of the drive elements is not absolutely necessary, but can be replaced by an associated with the direction reversal of the pivot drive, active radial retractability and extensibility.
  • the pivotability of the drive elements around their bearings 318, 320 is absolutely necessary, so that the two on the same clip strand acting drive elements 310 and 410 or 312 and 412 can dodge in the manner shown in Fig. 7.
  • the manually operable switch is thus connected to the position limit switch (s) via a controller so that the actuation of any one of these switches triggers the direction reversal of all the drive elements.
  • the second drive element active or passive engages with the beginning of the new clip strand, which pushes the end of the old clip strand in front of him. A complete supply of clips can thus be ensured during operation without downtime.
  • the drive elements are seen in a different position. They are designed in such a way that the drive element 410, 312 which is just disengaged when it passes the drive element 310 or 412, which is in engagement with the same clip strand, is passively pivoted away about its respective bearing 318, 320 against the spring force. Also in place of this advantageous development, another construction can occur. For example, the feed paths of both acting on the same clip strand drive elements can be completely separated so that there can be no such encounter. Even under these circumstances, a double-clip guide with only two (rotary) drives could be realized, but at the price of a less compact design.
  • Fig. 8 shows the same embodiment of the clip supply according to the invention, in which one of the two magazine bars 100 is pivoted away after loosening the lock 125 such that the mouth provided in the corresponding separation window output 128 is spaced to this separation window.
  • This Wegschwenkvorgang serves the purpose of access to the separation window and the clip mechanism of the closing device. This may be necessary, for example, in the case of malfunctions due to jammed or pent-up closure clips in their feed channel behind the separation window.
  • the advantage here is that the entire magazine bar remains attached to the clip feed by the pivoting movement of the magazine bar to its receptacle 123, while it was previously necessary to remove the flanged in the region of its output to the housing of the closing magazine bar completely from the closing device.
  • the clip strand located in the magazine bar has to be pulled upwards, ie, out of the magazine bar against the feed direction, before the magazine bar could be removed and set aside.
  • the clip strand can remain in the magazine bar 100 according to the invention during pivoting. He is even held by the respectively engaged drive element in its position, whereby he sags due to the pivotal movement on the opposite side of the vertical portion 124 of the magazine bar side because of the length compensation something.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Package Closures (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Dovetailed Work, And Nailing Machines And Stapling Machines For Wood (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Basic Packing Technique (AREA)
  • Sheet Holders (AREA)

Abstract

Clip supply comprises a magazine rod (100) for guiding a clip strand from the supply to a closing unit, and a clip drive having two drive elements in which the first drive element runs on a first circular advancing path in the advancing direction and the second drive element runs in the opposing direction. The drive elements pivot to and fro. An independent claim is also included for a double clip supply consisting of two clip supplies. Preferred Features: The drive elements are structured so that the first drive element produces a greater advancing direction than the second drive element.

Description

Die Erfindung betrifft eine Clipzuführung mit einer ein eingangsseitiges Ende (kurz: Eingang) und ein ausgangsseitiges Ende (kurz: Ausgang) aufweisenden Magazinstange zum Führen eines Clipstrangs von einem Clipvorrat zu einer Vereinzelungseinrichtung einer Verschließvorrichtung und mit einem im Bereich der Magazinstange angeordneten Clipantrieb.The invention relates to a clip feed having an input end (short: input) and an output end (short: output) having magazine bar for guiding a clip strand from a clip supply to a separating device of a closing and with a arranged in the region of the magazine bar clip drive.

Mit der eingangs erwähnten Verschließvorrichtung ist eine zur Herstellung von Würsten mit einem meist pastösen Füllgut in einer flexiblen Schlauchhülle (beispielsweise einem Darm) gemeint. Diese Verschließvorrichtungen (nachstehend auch Clipautomaten genannt) funktionieren üblicherweise dergestalt, dass die einseitig verschlossene, gefüllte Schlauchhülle mittels sog. Verdrängerelemente an einer Stelle eingeschnürt und daraufhin in dem Einschnürbereich befindliches Füllgut durch eine Bewegung in Richtung der Schlauchachse verdrängt wird. Auf dem so gebildeten Schlauchzopf wird wenigstens ein Verschlusselement (oder Clip) angebracht und verschlossen.With the closing device mentioned above is meant for the production of sausages with a mostly pasty filling in a flexible tubular casing (for example, a gut). These closing devices (hereinafter also referred to as clip-off machines) usually function in such a way that the filled tubular casing closed on one side is constricted at one point by means of so-called displacement elements and the filling material located in the constricting region is then displaced by a movement in the direction of the tube axis. At least one closure element (or clip) is attached and closed on the hose plait thus formed.

Auf diese Weise können entweder zusammenhängende Wurstketten produziert oder beispielsweise einzelne Schläuche oder Beutel verschlossen werden. Mit sogenannten Doppelclipautomaten werden gleichzeitig zwei nebeneinanderliegende Clips auf dem in der beschriebenen Weise gebildeten Schlauchzopf angebracht und verschlossen, wonach dieser zwischen den beiden Clips durchtrennt wird. Auf diese Weise werden einzelne Würste in Serie produziert.In this way, either contiguous sausage chains can be produced or, for example, individual tubes or bags can be closed. With so-called Doppelclipautomaten two adjacent clips are mounted and sealed on the same manner formed in the manner described hose pigtail, after which it is severed between the two clips. In this way, individual sausages are produced in series.

Wie in allen Bereichen der Technik konnte auch auf dem Gebiet der Clipmaschinen die Produktivität in der Vergangenheit um ein erhebliches Maß gesteigert werden. Dies erfordert eine entsprechende Anpassung der peripheren Einrichtungen - so auch der Magazinstange und der gesamten Clipzuführung. Die einfachsten bekannten Clipzuführungen bestehen aus einer im Wesentlichen vertikal angeordneten Magazinstange, auf die von Hand ein aus einer Vielzahl hintereinander aufgereihter und durch ein Siegelband verbundener Clips bestehender "endlicher" Clipstrang aufgezogen wird. Die Magazinstange ist bekanntermaßen an ihrem unteren, der Verschließeinrichtung nahen Ende in einem Radius so umgelenkt, dass der Clipstrang einem in der Regel senkrecht angeordneten Vereinzelungsfenster der Verschließvorrichtung, horizontal zugeführt wird. Hier, am Ausgang der Magazinstange wird der in Vorschubrichtung vorderste Clip von dem Clipstrang zur weiteren Verarbeitung getrennt.As in all fields of technology, in the field of clip machines, past productivity has increased considerably. This requires a corresponding adjustment of the peripheral devices - including the magazine bar and the entire clip feed. The simplest known clip feeders consist of a substantially vertically arranged magazine bar on which a "finite" strand of clips consisting of a plurality of successively lined up and connected by a sealing tape clips is drawn up by hand. As is known, the magazine rod is deflected in a radius at its lower end, which is close to the closing device, in such a way that the clip strand is fed horizontally to a separating window of the closing device which is usually arranged vertically. Here, at the output of the magazine bar the foremost clip in the feed direction is separated from the clip strand for further processing.

Der Vorschub wird bei dieser Clipzuführung üblicherweise durch die Schwerkraft erzeugt. Der maximale Vorrat an Clips ist durch die Kapazität der Magazinstange vorgegeben. Da diese aufgrund des Schwerkraftantriebs vertikal angeordnet ist und ihr Eingang zum Zweck des manuellen Aufziehens der Clipstränge gut erreichbar sein muss, ist ihre Länge und damit Kapazität sehr begrenzt. Sie ist für schnell arbeitende Verschließvorrichtungen nur begrenzt geeignet, da ein ständiges, manuelles Nachmagazinieren erforderlich wäre.The feed is usually generated by gravity in this clip feed. The maximum stock of clips is dictated by the capacity of the magazine bar. Since this is arranged vertically due to the gravity drive and its input for the purpose of manual winding of the clip strands must be easily accessible, their length and thus capacity is very limited. It is limited suitable for fast-acting closing devices, as a constant, manual Nachmagazinieren would be required.

Aus der US 3,189,220 ist für einen anderen Anwendungsfall ein horizontaler Riemen- und ein Reibrollenantrieb für endliche Stränge von Heftklammern bekannt, welche in einem vorgeschalteten, vertikalen Magazin bevorratet sind und der Schwerkraft folgend automatisch nachgelegt werden.From US 3,189,220 a horizontal belt and a friction roller drive for finite strands of staples is known for another application, which are stored in an upstream, vertical magazine and following gravity are automatically refilled.

Eine weiterentwickelte, ebenfalls bekannte Clipzuführung zeichnet sich dadurch aus, dass der Clipstrang auf einer - auch aus Hygienegründen - oberhalb des Vereinzelungsfensters aufgehängten Spule zu einem größeren Clipvorrat aufgewickelt ist. Der quasi "endlose" Clipstrang wird von dieser Spule abgezogen und in den Eingang einer Magazinstange eingeführt. Die Geometrie der Magazinstange gleicht im Wesentlichen der der oben beschriebenen Magazinstange, die aufgrund des Spulenvorrats aber nicht mehr die Funktion der Vorratsbildung zu erfüllen hat. Der vertikale Teil der Magazinstange kann daher kürzer sein.A further developed, likewise known clip feed is distinguished by the fact that the clip strand is wound up on a spool suspended above the singling window, also for reasons of hygiene, to form a larger clip supply. The quasi "endless" clip strand is subtracted from this spool and inserted into the entrance of a magazine bar. The geometry of the magazine bar is substantially similar to that of the magazine bar described above, but due to the coil supply no longer has to fulfill the function of stock formation. The vertical part of the magazine bar can therefore be shorter.

Der Vorschub wird bei dieser Clipzuführung üblicherweise durch einen aktiven, im Bereich der Magazinstange an dem Clipstrang angreifenden Clipantrieb erzeugt. Es sind zwei Antriebsmechanismen bekannt. Zum einen kann die erforderliche Antriebskraft über zwei auf gegenüberliegenden Seiten an dem Clipstrang anliegende, permanent oder intermittierend angetriebene Reibrollen eingeleitet werden. Alternativ kann auch ein Antrieb vorgesehen werden, bei dem ein linear hin und her beweglicher, an dem Clipstrang angreifender Mitnehmer schrittweise Vorschub erzeugt. Eine Clipzuführung mit einem solchen Antrieb ist beispielsweise in der US 5,586,424 A gezeigt. Eine Weiterbildung dieses Antriebs sieht zwei linear hin und her bewegliche Mitnehmer vor, die abwechselnd schrittweise Vorschub erzeugen.The feed is usually generated in this clip supply by an active, acting in the region of the magazine bar on the clip strand clip drive. There are two drive mechanisms known. On the one hand, the required driving force can be introduced via two friction rollers, which are in contact with the clip strand on opposite sides and act permanently or intermittently. Alternatively, a drive can be provided in which a linearly movable back and forth, acting on the clip strand carrier generates incremental feed. A clip feed with such a drive is shown for example in US 5,586,424 A. A development of this drive provides two linear reciprocating driver, which alternately produce incremental feed.

Ist der Clipvorrat verbraucht, d.h. die Spule abgewickelt, bleibt immer ein restlicher Clipstrang zwischen dem Spulenkörper und dem Eingang der Magazinstange übrig, der als loses Ende mangels Führung oberhalb des Eingangs der Magazinstange abknickt oder so verkantet, dass er nicht mehr in den Eingang der Magazinstange einfädelt. Dadurch, spätestens jedoch wenn der letzte Clip des Stranges den Clipantrieb passiert hat, wird die Verschließvorrichtung angehalten, da dann der Antrieb nicht mehr an dem restlichen in der Magazinstange befindlichen Clipstrang angreifen kann, und somit kein Vorschub mehr gewährleistet wird. Zum Wechseln des Clipvorrats muss der leere Spulenkörper von seinem Halter herunter und der restliche Clipstrang entgegen der Vorschubrichtung aus der Magazinstange heraus gezogen werden, damit der Anfang eines neuen Clipstrangs so eingefädelt werden kann, dass die Antriebselemente des Clipantriebs an diesem angreifen können.If the clip supply is used up, ie unwinding the spool, a remaining strand of the clip remains between the bobbin and the entrance of the magazine bar, which, as a loose end, bends over the entrance of the magazine bar for lack of guidance or is tilted so that it is no longer in the entrance of the magazine bar threading. As a result, but at the latest when the last clip of the strand has passed the clip drive, the closing device is stopped because then the drive can no longer attack on the remaining located in the magazine bar clip strand, and thus no more feed is guaranteed. To change the clip supply, the empty bobbin has to be pulled down from its holder and the remaining clip strand has to be pulled out of the magazine bar counter to the feed direction. so that the beginning of a new clip strand can be threaded so that the drive elements of the clip drive can attack on this.

Die durch dieses Nachmagazinieren bedingten Standzeiten sind unerwünscht. Ferner bleibt bei jedem Wechsel ein unverwertbarer Rest des Clipstrangs übrig. Um das Verhältnis aus Betriebs- zu Standzeit, als auch das Verhältnis aus genutzten Clips zu Restclips zu verbessern, wurden die Clipspulen auf eine Kapazität mehrerer tausend Clips vergrößert. An dieser Stelle stoßen die Bemühungen, die Produktivität und Ausbeute zu steigern, jedoch an eine Grenze, da die Clipspulen in der Regel manuell auf den dafür vorgesehenen Halter gehoben werden müssen, so dass deren Gewicht nicht unbegrenzt weiter gesteigert werden kann.The service life caused by this re-storage is undesirable. Furthermore, an unvalidable remainder of the clip strand remains with each change. In order to improve the ratio of operating time to life, as well as the ratio of used clips to rest clips, the clip reels have been enlarged to a capacity of several thousand clips. At this point, the efforts to increase the productivity and yield, but to a limit, since the clip spools usually have to be manually raised to the designated holder, so that their weight can not be increased indefinitely.

Aufgabe der vorliegenden Erfindung ist es demgemäss, eine Clipzuführung bereitzustellen, durch die sich die Produktivität und die Ausbeute von Verschließvorrichtungen erhöhen lässt.Accordingly, it is an object of the present invention to provide a clip feeder by which the productivity and yield of sealing devices can be increased.

Die Aufgabe wird erfindungsgemäß durch eine Clipzuführung der eingangs genannten Art gelöst, der zwei hintereinander mit dem Clipstrang wechselweise in Eingriff bringbare und dergestalt eingerichtete Antriebselemente aufweist, dass ein erstes in Eingriff befindliches Antriebselement auf einem ersten kreissegmentförmigen Vorschubweg in Vorschubrichtung läuft, während ein zweites außer Eingriff befindliches Antriebselement auf einem zweiten kreissegmentförmigen Vorschubweg der Vorschubrichtung entgegenläuft und dass der Eingriff und die Laufrichtung der Antriebselemente umkehrbar ist, wobei der erste und der zweite Vorschubweg dieselbe Rotationsachse aufweisen, um den die Antriebselemente hin und her schwenkbar sind.The object is achieved by a clip feeder of the type mentioned, the two consecutively with the clip strand alternately engageable and thus configured drive elements, that a first engaged drive element runs on a first circular segment feed path in the feed direction, while a second disengaged located drive element on a second circular segment-shaped feed path of the feed direction and that the engagement and the running direction of the drive elements is reversible, wherein the first and the second feed path have the same axis of rotation about which the drive elements are pivotable back and forth.

Mit Vorschubweg ist der Weg entlang der durch die Magazinstange vorgegebenen Führungsbahn gemeint, über den das in Eingriff befindliche Antriebselement seinen Vorschub auf den Clipstrang einleitet. Die Erfindung bedingt folglich, dass die Magazinstange einen kreissegmentförmigen Abschnitt aufweist. Zwischen den beiden hintereinander angeordneten, d.h. in Vorschubrichtung beabstandeten Antriebselementen wird ein Zeitpuffer geschaffen, der abhängig von dem Clipverbrauch und dem Abstand zwischen den Antriebselementen (Puffervorrat oder Pufferstrecke) einer Bedienperson ausreichend Gelegenheit gibt, um den Clipvorrat zu erneuern, während die Verschließvorrichtung noch weiterarbeiten kann. Die erfindungsgemäße Clipzuführung erlaubt nämlich, den Anfang des neuen Clipstranges in den Eingriffsbereich des in Vorschubrichtung zuerst kommenden Antriebselementes einzuführen, während das zweite dahinterliegende Antriebselement das Ende des alten Clipstranges noch weiterfördert. Genauer gesagt kann der Anfang des neuen Clipstranges (manuell) unter dem außer Eingriff befindlichen Antriebselement hindurch bis an das Ende des alten Clipstranges herangeführt werden, während dieser von dem daran angreifenden Antriebselement weiter in Vorschubrichtung gefördert wird. Danach wird durch (manuell ausgelöstes) Umkehren, der Eingriff und die Laufrichtung beider Antriebselemente umgekehrt. Das zuvor außer Eingriff befindliche Antriebselement greift nun an dem neuen Clipstrang an und treibt diesen zusammen mit dem alten Clipstrang in dieselbe Vorschubrichtung an, während das zuvor in Eingriff befindliche Antriebselement "leer" gegen die Vorschubrichtung zurückläuft. Auf diese Weise entsteht keine Lücke während des Wechsels, da der neue Clipstrang an das Ende des alten Clipstrangs herangeführt, der Puffervorrat gewissermaßen wieder aufgefüllt wurde. Standzeiten können daher vermieden werden. Aufgrund der Kreissegmentform beider Vorschubwege und deren Koaxialität ist es möglich, einen Schwenkantrieb für die Bewegung der Antriebselemente einzusetzen, was der Kompaktheit der Clipzuführung zu Gute kommt.By feed path is meant the path along the predetermined by the magazine bar guide rail over which the engaged drive element initiates its advance on the clip strand. Consequently, the invention requires that the magazine bar has a circular segment-shaped section. Between the two arranged one behind the other, ie in Feed direction spaced drive elements, a time buffer is created, which gives an operator enough opportunity depending on the clip consumption and the distance between the drive elements (buffer supply or buffer line) to renew the clip supply, while the closing device can continue working. Namely, the clip feeder according to the invention allows to introduce the beginning of the new clip strand into the engagement region of the drive element first coming in the feed direction, while the second drive element located behind it furthers the end of the old clip strand. More specifically, the beginning of the new clip string (manually) can be brought under the disengaged drive element through to the end of the old clip strand while it is further promoted in the feed direction by the drive element engaging thereon. Thereafter, by (manually triggered) reversing, the engagement and the direction of rotation of both drive elements are reversed. The previously disengaged drive element now engages the new clip strand and drives it together with the old clip strand in the same feed direction, while the previously engaged drive element "empty" runs back against the feed direction. In this way, no gap is created during the change, since the new clip strand brought to the end of the old clip strand, the buffer pool was filled up to a certain extent again. Service life can therefore be avoided. Due to the circular segment shape of both feed paths and their coaxiality, it is possible to use a pivot drive for the movement of the drive elements, which benefits the compactness of the clip feed.

Eine vorteilhafte Weiterbildung sieht dem ersten und zweiten Vorschubweg zugeordnete und durch die korrespondierenden Antriebselemente betätigbare Positionsendschalter vor, die jeweils dazu eingerichtet sind, die Laufrichtungsumkehr beider Antriebselemente auszulösen. Dies wird benötigt werden, um die erfindungsgemäße Hin- und Her-Bewegung automatisch zu steuern.An advantageous development provides the first and second feed path associated and operable by the corresponding drive elements position limit switch, which are each adapted to trigger the direction of rotation reversal of both drive elements. This will be needed to automatically control the back-and-forth motion of the invention.

Vorzugsweise weisen die Antriebselemente Klinken mit einer Freilaufrichtung in Vorschubrichtung und einer Sperrrichtung entgegen der Vorschubrichtung auf. Durch einen solchen Klinkenmechanismus erfolgt die Eingriffsumkehr abhängig von der Laufrichtung passiv automatisch.Preferably, the drive elements on pawls with a freewheeling direction in the feed direction and a reverse direction against the feed direction. By such a latch mechanism, the engagement reversal is passive automatically depending on the direction.

Alternativ oder zusätzlich können die Antriebselemente zum Zweck des außer Eingriff Bringens radial ein- und zum Zweck des in Eingriff Bringens radial ausfahrbar ausgestaltet sein. Dann ist es von Vorteil, wenn die Positionsendschalter ferner jeweils dazu eingerichtet sind, das Ausfahren des Antriebelements auszulösen, dessen Laufrichtung in die Vorschubrichtung umgekehrt wird, und das Einfahren des Antriebelements auszulösen, dessen Laufrichtung in die der Vorschubrichtung entgegengesetzte Richtung umgekehrt wird.Alternatively or additionally, the drive elements for the purpose of disengagement Bringens radially in and be designed to be radially extendable for the purpose of bringing Bringen. Then it is advantageous if the position limit switches are each further adapted to trigger the extension of the drive element whose direction is reversed in the feed direction, and to trigger the retraction of the drive element whose direction is reversed in the direction opposite to the feed direction.

Vorteilhaft ist es auch, wenn der erste und zweite kreissegmentförmige Vorschubweg im Wesentlichen deckungsgleich sind und durch einen in etwa halbkreisförmigen Abschnitt der Magazinstange gebildet werden, dessen eines Ende den Eingang bildet, in den der Clipstrang von unten zuführbar ist. Diese Ausgestaltung ist insbesondere vorteilhaft im Hinblick auf eine optimale Raumausnutzung bei maximaler Länge der Magazinstange. Ferner erlaubt die Geometrie der Magazinstange ein Einführen des Clipstrangs in deren Eingang von unten, wodurch das restliche Ende eines von der Spule abgewickelten Clipstranges im Wesentlichen der Einführrichtung folgend senkrecht nach unten hängt und daher restlos aufgebraucht werden kann.It is also advantageous when the first and second circular segment-shaped feed path are substantially congruent and are formed by an approximately semicircular portion of the magazine bar, one end of which forms the entrance, in which the clip strand can be fed from below. This embodiment is particularly advantageous in terms of optimal space utilization at maximum length of the magazine bar. Furthermore, the geometry of the magazine bar allows insertion of the clip strand in the entrance from below, whereby the remaining end of a unwound from the coil line of clips substantially perpendicular to the insertion direction depends downwards and therefore can be used up completely.

In einer besonders bevorzugten Ausführungsform werden zwei gegeneinander angeordnete Clipzuführungen, deren Rotationsachsen koaxial ausgerichtet sind, zu einer Doppelclipzuführung zusammengesetzt. Dies birgt den Vorteil, dass die Antriebselemente beider einzelner Clipszuführungen in idealer Weise der Gestalt kombinierbar sind, dass das jeweils erste, in Eingriff befindliche Antriebselement der einen Clipzuführung mit dem jeweils zweiten, außer Eingriff befindlichen Antriebselement der anderen Clipzuführung zu jeweils einem Paar gekoppelt ist und dass nur jeweils ein Antrieb zur Betätigung eines jeden der Paare vorgesehen ist. Durch die Verwendung lediglich zweier Antriebe kann wiederum Platz aber auch Kosten gespart werden.In a particularly preferred embodiment, two mutually arranged clip feeders whose axes of rotation are aligned coaxially, assembled into a double-clip feed. This has the advantage that the drive elements of both individual clip feeders are ideally combinable in the form that the respectively first engaged drive element of one clip feed is coupled to the respectively second drive element of the other clip feed, which is in each case in engagement with a pair, and that only one drive each for actuating each of the pairs is provided. By using only two drives, space and costs can be saved again.

Dabei ist es vorteilhaft die Positionsendschalter beider Clipzuführungen dergestalt zu koppeln, dass der zuerst betätigte Positionsendschalter die Richtungsumkehr aller Antriebselemente auslöst.It is advantageous to couple the position limit switches of both clip feeders in such a way that the first-operated position limit switch triggers the direction reversal of all drive elements.

Es folgt die Erläuterung der Erfindung anhand eines Ausführungsbeispiels. In der Zeichnung zeigen:

Fig. 1
ein Ausführungsbeispiel einer Magazinstange der erfindungsgemäßen Clipzuführung in der Seitenansicht;
Fig. 2
einen Clipspulenhalter gemäß einer Ausführungsform der erfindungsgemäßen Clipzuführung in der Seitenansicht;
Fig. 3
eine Seitenansicht eines Paares gekoppelter Antriebselemente gemäß demselben Ausführungsbeispiel der erfindungsgemäßen Clipzuführung;
Fig. 4
zwei Paare gekoppelter Antriebselemente in der Draufsicht;
Fig. 5
eine Teilansicht des Ausführungsbeispiels der erfindungsgemäßen Clipzuführung von oben;
Fig. 6
das Ausführungsbeispiel der erfindungsgemäßen Clipzuführung aus Fig. 5 in der totalen Seitenansicht mit den zwei Paaren gekoppelter Antriebselemente in einer ersten Endstellung;
Fig. 7
dieselbe Ansicht des Ausführungsbeispiels der Clipzuführung mit den zwei Paaren gekoppelter Antriebselemente in einer sich kreuzenden Stellung; und
Fig. 8
die Seitensicht auf die erfindungsgemäße Clipzuführung mit einer weggeschwenkten Magazinstange.
The following is the explanation of the invention with reference to an embodiment. In the drawing show:
Fig. 1
an embodiment of a magazine bar of the clip supply according to the invention in side view;
Fig. 2
a clip reel holder according to an embodiment of the inventive clip feed in the side view;
Fig. 3
a side view of a pair of coupled drive elements according to the same embodiment of the invention clip feed;
Fig. 4
two pairs of coupled drive elements in plan view;
Fig. 5
a partial view of the embodiment of the inventive clip feed from above;
Fig. 6
the embodiment of the inventive clip feed of Figure 5 in the total side view with the two pairs of coupled drive elements in a first end position.
Fig. 7
the same view of the embodiment of the clip feed with the two pairs of coupled drive elements in a crossing position; and
Fig. 8
the side view of the inventive clip feed with a weggeschwenkten magazine bar.

Die in Fig. 1 gezeigte, erfindungsgemäße Magazinstange 100 setzt sich aus mehreren strukturellen Elementen zusammen. Zum Einen weist diese eine äußere Führungsschiene 110 auf, deren Querschnitt, wie in Fig. 5 dargestellt ist, im Wesentlichen dem offenen Querschnittsprofil einer U-förmig (vor-gebogenen Verschlussklammer) (Clip) 510 entspricht. Parallel zu der äußeren Führungsschiene 110 ist eine innere Führungsschiene 112 positioniert, die mit der äußeren Führungsschiene 110 einen Spalt 114 einschließt. Das Spaltmaß entspricht in etwa der Stärke des Clipdrahts, so dass der Clipstrang sicher zwischen den beiden Führungsschienen 110 und 112 auf die in Fig. 5 gezeigte Weise geführt wird. Die innere Führungsschiene 112 setzt sich auf der in Fig. 1 gezeigten rechten Seite der Magazinstange 100 funktional in einer Aufhängung 116 fort, welche zugleich das zentrale Bauteil für die gesamte Magazinstange 100 in der nachstehend beschriebenen Weise bildet. An der Aufhängung 116 sind mittels dreier Verbindungselemente 118 die äußere Führungsschiene 110 und die innere Führungsschiene 112 dergestalt miteinander verbunden, dass sich eben jener Spalt 114 ausbildet. Ferner weist die Aufhängung 116 zwei sich zum Zentrum eines oberen, etwa halbkreisförmigen Abschnitts 120 der Magazinstange 100 erstreckende Speichen 121, 122 auf, die in diesem Zentrum mit einer Aufnahme 123 verbunden sind. Mittels der Aufnahme 123 kann die gesamte Magazinstange 100 an einer nicht dargestellten, korrespondierenden Halterung um die Rotationssymmetrieachse (kurz: Rotationsachse) jenes halbkreisförmigen Abschnitts 120 schwenkbar befestigt werden. Schließlich ist im unteren Bereich eines geraden, in etwa senkrechten Abschnitts 124 ein Befestigungselement 125 zur Arretierung der Magazinstange 100 in einer Betriebsposition an der Verschließvorrichtung vorgesehen.The magazine bar 100 according to the invention shown in FIG. 1 is composed of several structural elements. On the one hand, this has an outer guide rail 110 whose cross-section, as shown in FIG. 5, substantially corresponds to the open cross-sectional profile of a U-shaped (pre-bent closure clip) (clip) 510. In parallel with the outer guide rail 110, an inner guide rail 112 is positioned, which includes a gap 114 with the outer guide rail 110. The gap corresponds approximately to the thickness of the clip wire, so that the clip strand is securely guided between the two guide rails 110 and 112 in the manner shown in Fig. 5. The inner guide rail 112 continues on the right side of the magazine bar 100 shown in FIG. 1 functionally in a suspension 116, which at the same time forms the central component for the entire magazine bar 100 in the manner described below. On the suspension 116, the outer guide rail 110 and the inner guide rail 112 are connected to one another in such a way by means of three connecting elements 118 that precisely that gap 114 is formed. Further, the suspension 116 has two spokes 121, 122 extending to the center of an upper, approximately semicircular portion 120 of the magazine bar 100, which are connected to a receptacle 123 in this center. By means of the receptacle 123, the entire magazine bar 100 can be pivotally attached to a, not shown, corresponding holder about the rotational axis of symmetry (short axis of rotation) of that semicircular portion 120. Finally, in the lower region of a straight, approximately vertical section 124, a fastening element 125 is provided for locking the magazine bar 100 in an operating position on the closing device.

Insgesamt besteht die Magazinstange 100 aus drei funktionalen Abschnitten: dem eine erste Umlenkung bildenden halbkreisförmigen Abschnitt 120, stromabwärts hinter der ersten Umlenkung dem geraden, im Betrieb im Wesentlichen senkrecht angeordneten Abschnitt 124 und weiter stromabwärts einem eine zweite Umlenkung bildenden teilkreisförmigen Abschnitt 126.Overall, the magazine bar 100 consists of three functional sections: the first deflection forming semicircular section 120, downstream of the first deflection the straight, in operation in the Substantially vertically disposed portion 124 and further downstream of a second deflection forming part-circular portion 126th

Die erste Umlenkung 120 ist so ausgestaltet, dass der Eingang 130 der Magazinstange 100 nach unten weist - oder mit anderen Worten - von unten mit einem Clipstrang bestückbar ist. Dabei kommt es nicht darauf an, dass die Magazinstange 100 mit einem vertikalen Abschnitt beginnt, sondern dass die Magazinstange 100 im Eingangsbereich eine solche Orientierung aufweist, dass das Einfädeln eines losen oder freien Endes eines Clipstrangs in deren Eingang 130 gewährleistet ist. Die Orientierung der Magazinstange im Eingangsbereich wird durch eine Tangente 132 an den halbkreisförmigen Abschnitt 120, genauer an eine durch den Spalt 114 gebildete Führungsbahn, verdeutlicht. Da der Clipstrang - wie eingangs erwähnt - typischerweise aus einer Vielzahl aneinandergereihter einzelner Clips besteht, die im Bereich ihres Rückens 512 (siehe Fig. 5) mit einem Siegelband verbunden sind, wird das freie Ende des Clipstrangs der Schwerkraft folgend senkrecht nach unten hängen. Dadurch schließt das freie Ende des Clipstrangs, dessen Orientierung durch eine Vertikale 134 symbolisiert ist, mit der Tangente 132 einen Zwischenwinkel 136 ein, der jedenfalls das Maß nicht übersteigen darf, bei welchem das Einfädeln des freien Endes des Clipstrangs nicht mehr gewährleistet wird. Es kommt insoweit auch nicht darauf an, dass die erste Umlenkung durch einen wie in Fig. 1 gezeigten halbkreisförmigen Abschnitt 120 gebildet wird. Sie kann beispielsweise ebenso in einzelne Kreisabschnitte mit dazwischen liegenden andersgearteten Abschnitten eingeteilt sein.The first deflection 120 is configured such that the entrance 130 of the magazine bar 100 points downwards - or in other words - from below with a clip strand can be equipped. It is not important that the magazine bar 100 begins with a vertical section, but that the magazine bar 100 in the entrance area has such an orientation that the threading of a loose or free end of a clip strand is ensured in the entrance 130. The orientation of the magazine bar in the entrance area is illustrated by a tangent 132 to the semicircular section 120, more precisely to a guideway formed by the gap 114. Since the clip strand - as mentioned above - typically consists of a plurality of juxtaposed individual clips, which are connected in the region of their back 512 (see Fig. 5) with a sealing band, the free end of the clip strand will depend on gravity hanging vertically downwards. This closes the free end of the clip strand whose orientation is symbolized by a vertical 134, with the tangent 132 an intermediate angle 136, which in any case must not exceed the level at which the threading of the free end of the clip strand is no longer guaranteed. It does not matter in that respect that the first deflection is formed by a semi-circular section 120 as shown in FIG. For example, it may also be divided into individual circular sections with sections of different types in between.

Auf dem senkrechten Abschnitt 124 wird der Clipstrang stromabwärts hinter der ersten Umlenkung nach unten geführt. Er weist in dem gezeigten Ausführungsbeispiel eine Länge und Neigung auf, die durch die Abmessungen der Spulen und der Verschließmaschine bestimmt ist. Selbstverständlich kann die Magazinstange zwischen dem Eingang 130 und dem Ausgang 128 - auch auf andere Weise - an verschiedene geometrischen Randbedingungen angepasst werden.On the vertical portion 124 of the clip strand is guided downstream downstream of the first deflection down. In the exemplary embodiment shown, it has a length and inclination which is determined by the dimensions of the coils and the closing machine. Of course, the magazine bar between the input 130 and the output 128 - in other ways - be adapted to different geometric boundary conditions.

Weiter stromabwärts wird der Clipstrang nochmals mittels des teilkreisförmigen Abschnitts 126 umgelenkt. Dieser Abschnitt läuft mit im Wesentlichen horizontaler Tangente aus, so dass die Magazinstange 100 unter einem rechten Winkel mit ihrem Ausgang 128 in das (hier nicht dargestellte) im Wesentlichen senkrecht angeordnete Vereinzelungsfenster der Verschließvorrichtung mündet.Further downstream, the clip strand is again deflected by means of the part-circular portion 126. This section runs with a substantially horizontal tangent, so that the magazine bar 100 opens at a right angle with its exit 128 into the (not shown here) substantially vertically arranged separation window of the closing device.

Der in Fig. 2 gezeigte und mit der Magazinstange 100 korrespondierende Clipspulenhalter 200 ist beispielsweise zur Montage auf der Gehäuseoberseite einer Verschließvorrichtung geeignet. Er weist einen Sockel 210 auf, mit dem er an einer oberen Gehäusefläche der Verschließvorrichtung angeflanscht werden kann. An seinem oberen, dem Sockel gegenüberliegenden Ende weist er eine Achse 212 auf. Auf dieser Achse 212 ist eine Spulenaufnahme 214 drehbar gelagert. In Fig. 5 ist eine Anordnung in der Draufsicht gezeigt, die erkennen lässt, dass in einer symmetrischen Ausführung des Clipspulenhalters 200 zwei Clipspulen 512, 513 von gegenüberliegenden Seiten auf entsprechende Aufnahmen 214 axial aufgesteckt werden können. Diese Spulen werden durch Federn 514 gegen ein versehentliches Abrutschen von den Spulenaufnahmen gesichert.The clip coil holder 200 shown in FIG. 2 and corresponding to the magazine bar 100 is suitable, for example, for mounting on the upper side of the housing of a closing device. It has a base 210, with which it can be flanged to an upper housing surface of the closing device. At its upper, the base opposite end, it has an axis 212. On this axis 212, a spool receptacle 214 is rotatably mounted. FIG. 5 shows an arrangement in plan view, which shows that in a symmetrical embodiment of the clip coil holder 200, two clip coils 512, 513 can be plugged axially from opposite sides onto corresponding receptacles 214. These coils are secured by springs 514 against accidental slipping from the spool recordings.

Das in Fig. 3 dargestellte Paar 300 gekoppelter Antriebselemente 310, 312 besteht aus jenen Antriebselementen 310, 312, die jeweils mit dem hier nicht dargestellten Clipstrang in Eingriff bringbare Eingriffsflächen 311, 313 aufweisen, und einem gemeinsamen Arm 314, an dem beide Antriebselemente 310, 312 befestigt sind. Wie in den Fig. 4 und 5 zu sehen ist, sind die Antriebselemente im Eingriffsbereich gegabelt, damit sie die innere Führungsschiene 112 umgreifen und symmetrisch an dem Clipsstrang 510 angreifen können. Die Eingriffsflächen können gezackt, aufgeraut oder gummiert sein, so dass entweder ein reib- oder formschlüssige Mitnahme des Clipstranges in Betracht kommt.The pair 300 of coupled drive elements 310, 312 shown in FIG. 3 consists of those drive elements 310, 312 which each have engagement surfaces 311, 313 engageable with the clip strand, not shown here, and a common arm 314, on which both drive elements 310, 312 are attached. As can be seen in FIGS. 4 and 5, the drive elements are forked in the engagement region, so that they can embrace the inner guide rail 112 and engage symmetrically on the strip of clips 510. The engagement surfaces may be jagged, roughened or rubberized, so that either a friction or positive entrainment of the clip strand comes into consideration.

Die Antriebselemente 310, 312 weisen den Eingriffsflächen gegenüberliegend Lager 318 bzw. 320 zur Befestigung an dem Arm 314 auf, die sowohl eine Schwenkbewegung der Antriebselemente als auch eine davon unabhängige lineare Bewegung der Antriebselemente in radialer Richtung erlauben.The drive elements 310, 312 have the engagement surfaces opposite bearings 318 and 320 for attachment to the arm 314, which allow both a pivotal movement of the drive elements and a non-independent linear movement of the drive elements in the radial direction.

Die Antriebselemente weisen ferner an ihrem den Eingriffsflächen gegenüberliegenden Ende jeweils eine Kurve 326, 328 auf. Zwei Federn 322, 324 liegen an diesen Kurven an. Die Kurven sind so geformt, dass die Federn durch ihre Federkraft ein Moment auf die Antriebselemente 310, 312 ausüben, welches diese in ihrer Ruhestellung in eine aufgerichtete (nicht weggeschwenkte) Position zwingt. Ein nicht dargestellter Anschlag sorgt dafür, dass diese Position nicht überschritten werden kann und dass somit eine Sperrrichtung vorgegeben wird. In der anderen, sog. Freilaufrichtung können die Antriebselemente gegen die Federkraft weggeschwenkt werden. Sie wirken daher wie Klinken. Aufgrund des spiegelsymmetrischen Aufbaus entspricht die Freilaufrichtung der einen der Sperrrichtung der anderen Klinke desselben Paares 300.The drive elements also each have a curve 326, 328 on their end opposite the engagement surfaces. Two springs 322, 324 abut these curves. The curves are shaped so that the springs by their spring force exert a moment on the drive elements 310, 312, which forces them in their rest position in an upright (not pivoted away) position. An unillustrated stop ensures that this position can not be exceeded and thus a reverse direction is specified. In the other, so-called freewheeling direction, the drive elements can be pivoted away against the spring force. They therefore act like pawls. Due to the mirror-symmetrical structure, the freewheeling direction corresponds to one of the locking direction of the other pawl of the same pair 300.

Die Federn 322, 324 bewirken ferner, dass die Antriebselemente 310, 312 radial nach außen gegen den Clipstrang angedrückt werden, vgl. Fig. 6. Sie stellen somit im Rahmen der durch die Lager 138, 320 ermöglichten linearen Bewegung einen Längen- oder Toleranzausgleich sicher und sorgen zugleich für den benötigten Andruck gegen die Clips, um einen sicheren Vorschub zu gewährleisten.The springs 322, 324 further cause the drive elements 310, 312 are pressed radially outward against the clip strand, see. Thus, as part of the linear movement made possible by the bearings 138, 320, they ensure length or tolerance compensation and at the same time provide the necessary pressure against the clips in order to ensure reliable advancement.

Der Arm 314 verbindet die Antriebselemente 310, 312 mit einer Nabe 315, die sich aus einem achsfesten Teil 316 und einem radial beweglichen Teil 317 zusammensetzt und deren Schwenkachse zu den Eingriffsflächen 311, 313 beider Antriebselemente im Wesentlichen gleich beabstandet ist. Die Schwenkachse fällt wie in den Fig. 5 bis 8 ersichtlich wird, bei dem hier gezeigten Ausführungsbeispiel mit der Achse 212 der Spulenaufnahme 214 und der Rotationsachse der Magazinstangenaufnahme 122 zusammen. Der sich aus dieser Anordnung ergebende Vorteil wird aus der unter Bezugnahme auf die Fig. 6 bis 8 erfolgenden Funktionsbeschreibung ersichtlich.The arm 314 connects the drive elements 310, 312 with a hub 315, which is composed of an axle-fixed part 316 and a radially movable part 317 and whose pivot axis is substantially equal to the engagement surfaces 311, 313 of both drive elements. As can be seen in FIGS. 5 to 8, the pivot axis coincides with the axis 212 of the coil receptacle 214 and the axis of rotation of the magazine bar receptacle 122 in the exemplary embodiment shown here. The resulting from this arrangement advantage will be apparent from the taking place with reference to Figs. 6 to 8 functional description.

Der radial bewegliche Teil 317, der mit dem Arm 314 verbunden ist, ist in einer zu dem achsfesten 316 Teil beabstandeten, ausgefahrenen Stellung dargestellt, in der die Antriebselemente 310, 312 an dem Clipstrang anliegen. Der radial bewegliche Teil 317 kann - beispielsweise durch einen pneumatischen Antrieb entweder manuell oder automatisch betätigt - an den achsfesten Teil 316 heran- und wieder weggefahren werden. Hierdurch werden die Antriebselemente dieses Paares gemeinsam radial ein- bzw. ausgefahren und mit dem Clipstrang in bzw. außer Eingriff gebracht.The radially movable member 317, which is connected to the arm 314, is shown in an axially spaced apart from the 316 part, extended position in which the drive elements 310, 312 abut the clip strand. The radially movable part 317 can - for example by a pneumatic drive operated either manually or automatically - be moved up and down on the axle-fixed part 316. As a result, the drive elements of this pair are together radially retracted or extended and brought into or out of engagement with the clip strand.

Schließlich ist an dem Arm 314 eine Handhabe 330 angebracht, die ein manuelles Verschieben des Paares gekoppelter Antriebselemente 300 samt Nabe 315 ermöglicht.Finally, a handle 330 is attached to the arm 314, which allows a manual displacement of the pair of coupled drive elements 300, including hub 315.

In Fig. 4 ist eine Anordnung zweier Paare gekoppelter Antriebselemente 300 und 400 in der Draufsicht dargestellt. Diese sind koaxial zueinander ausgerichtet, d.h. dass die Schwenkachsen 440 ihrer Naben zusammen fallen. Sie sind ferner in identischer Weise aufgebaut, jedoch seitenverkehrt so gegeneinander angeordnet, dass die Antriebselemente 310, 312 bzw. 410, 412 in zwei parallelen Ebenen senkrecht zur Schwenkachse 440 nebeneinander liegen. Anders gesagt wirken die Antriebselement 310 und 410 bzw. 312 und 412 jeweils in derselben Ebene, d.h. auf denselben Clipstrang. Die Doppelebenenanordnung macht den hier gezeigten Clipantrieb 450 tauglich für den Einsatz in einer sog. Doppelclipzuführung 500.FIG. 4 shows an arrangement of two pairs of coupled drive elements 300 and 400 in plan view. These are aligned coaxially with each other, i. that the pivot axes 440 of their hubs fall together. They are further constructed in an identical manner, but laterally reversed against each other so arranged that the drive elements 310, 312 and 410, 412 in two parallel planes perpendicular to the pivot axis 440 are adjacent to each other. In other words, the driving elements 310 and 410 and 312 and 412 respectively act in the same plane, i. on the same clip strand. The double-level arrangement makes the clip drive 450 shown here suitable for use in a so-called double-clip feed 500.

In Fig. 5 wird diese Zusammenwirken sowie der konstruktive Zusammenhang der bisher vorgestellten Elemente der erfindungsgemäßen Clipzuführung in der teilweise geschnittenen Draufsicht verdeutlicht. Zum Einen ist erkennbar, dass - wie bereits vorher angesprochen - die Achsen 440 der Spulenaufnahme 214, der Naben 315 sowie der Magazinstangen 100 zusammen fallen. Ferner sieht man, dass es sich um eine Doppelclipzuführung 500 mit zwei seitenverkehrt gegeneinander angeordneten Clipzuführungen handelt, die sich einen gemeinsamen Spulenhalter teilen. Auf der gemeinsamen Achse 440 liegen zwei vorzugsweise pneumatische Schwenkantriebe 515, 516, die mit den Naben 315 verbunden sind und jeweils eines der Paare gekoppelter Antriebselemente 300, 400 (in entgegengesetzter Richtung) antreiben.In Fig. 5, this interaction and the constructive relationship of the previously presented elements of the clip supply according to the invention is illustrated in the partially sectioned plan view. On the one hand, it can be seen that, as already mentioned above, the axles 440 of the coil receptacle 214, the hubs 315 and the magazine bars 100 coincide. Furthermore, it can be seen that it is a double clip feeder 500 with two reversed clip feeds, which share a common bobbin holder. On the common axis 440 are two preferably pneumatic pivot drives 515, 516, which are connected to the hubs 315 and each one of the pairs of coupled drive elements 300, 400 (in the opposite direction) drive.

Jeweils ein auf einen Spulenkörper 512, 513 aufgewickelter Clipstrang wird nach schräg unten abgewickelt und über jeweils eine zugeordnete Umlenkrolle 516 bzw. 518 dem Eingang 130 der jeweils zugeordneten Magazinstange 100, wie in Fig. 6 illustriert ist, zugeführt. Die Umlenkrollen 516, 518 sind kegelförmig in Richtung auf die Mittelebene zwischen den Clipzuführungen verjüngt, so dass der Clipstrang 511 beim Abwickeln in axialer Richtung auf die jeweilige Magazinstange 110 hingelenkt wird.In each case, a wound onto a bobbin 512, 513, the clip strand is unrolled obliquely down and fed via an associated pulley 516 and 518 respectively the input 130 of the respective associated magazine bar 100, as shown in Fig. 6, respectively. The deflection rollers 516, 518 are conically tapered in the direction of the median plane between the clip feeders, so that the clip strand 511 is directed onto the respective magazine bar 110 during unwinding in the axial direction.

Die beiden Paare gekoppelter Antriebselemente 300 und 400 befinden sich in der in Fig. 6 gezeigten Darstellung jeweils in einer Endposition ihrer Schwenkbewegung, in der das jeweils obere Antriebselement 312 bzw. 410 am Eingangsbereich und somit am Anfang seines Vorschubweges angelangt ist. Mit Vorschubweg ist der Weg entlang der durch die Magazinstange 100 bzw. den Spalt 114 vorgegebenen Führungsbahn gemeint, über den das in Eingriff befindliche Antriebselement seinen Vorschub auf den Clipstrang einleitet. Entsprechend ist in dieser Position das jeweils untere Antriebselement 310 und 412 am Ende seines Vorschubweges angelangt. Im Betrieb ist vorgesehen, dass das zuerst in dieser Endposition angelangte Antriebselement die Umkehrung der Schwenkrichtung beider Paare gekoppelter Antriebselemente auslöst.In the illustration shown in FIG. 6, the two pairs of coupled drive elements 300 and 400 are each in an end position of their pivotal movement, in which the respective upper drive element 312 or 410 has arrived at the input area and thus at the beginning of its feed path. By feed path is meant the path along the predetermined by the magazine bar 100 and the gap 114 guide rail over which the engaged drive element initiates its advance on the clip strand. Accordingly, in this position, the respective lower drive element 310 and 412 has reached the end of its feed path. During operation, it is provided that the drive element initially reached in this end position triggers the reversal of the pivoting direction of both pairs of coupled drive elements.

Dies kann so realisiert werden, dass an jeder Endposition der Doppelclipzuführung 500 ein (nicht dargestellter) Positionsendschalter vorgesehen ist. Diese jedem Vorschubweg zugeordneten, insgesamt also zwei Positionsendschalter, können durch beide Paare gekoppelter Antriebselemente beispielsweise von einem Abschnitt, einer Nocke oder einem Vorsprung des jeweiligen Armes 314 oder der zugeordneten Nabe 315 betätigt werden. Die beiden Positionsendschalter sind vorzugsweise über eine gemeinsame Steuerung mit beiden Antrieben verbunden, so dass immer der zuerst betätigte Positionsendschalter die Richtungsumkehr aller Antriebselemente auslöst.This can be realized in such a way that a position limit switch (not shown) is provided at each end position of the double clip feed 500. This each feed path associated, a total of two position limit switches can be actuated by both pairs of coupled drive elements, for example, of a section, a cam or a projection of the respective arm 314 or the associated hub 315. The two position limit switches are preferably connected via a common control with both drives, so that always the first operated position limit switch triggers the direction reversal of all drive elements.

Es kann aber auch ein (zentraler) Positionsendschalter genügen, wenn dieser beispielsweise als Flip-Flop-Schalter ausgeführt ist. Er kann dann abwechselnd durch jeweils eine an jedem Arm 314 oder jeder Nabe 315 vorgesehen Nockenkurve betätigt werden. In diesem Fall ist die Steuerung zweier Positionsendschalter einerseits durch den internen Aufbau des Flip-Flop und andererseits durch die Nockenkurve verwirklicht.But it can also satisfy a (central) position limit switch, if this is designed for example as a flip-flop switch. It can then alternately through a cam cam provided on each arm 314 or each hub 315 be operated. In this case, the control of two position limit switches is realized on the one hand by the internal structure of the flip-flop and on the other hand by the cam curve.

Während also vor dem Umschalten das jeweils untere Antriebselement 310, 412 mit dem Clipstrang auf der zugeordneten Magazinstange in Eingriff war und diesen in die durch einen Pfeil 520, 522 gekennzeichnete Vorschubrichtung vorangetrieben hatte, wurde das damit jeweils gekoppelte obere Antriebselement 312, 410 in seiner Freilaufrichtung über den Clipstrang auf der jeweils anderen Magazinstange hinweggezogen. Nach dem Betätigen eines Positionsendschalters in der oben beschriebenen Weise, wird die Drehrichtung der Clipantriebe 316 umgekehrt. Dadurch gelangen die in Fig. 6 jeweils oberen Antriebselemente 312, 410 durch ihre Klinkenfunktion automatisch - gewissermaßen auf passive Weise - in Eingriff mit dem auf der zugeordneten Magazinstange aufgereihten Clipstrang. Die zuvor in Eingriff befindlichen Antriebselemente 310, 412 werden nun ebenfalls bedingt durch ihre Klinkenfunktion - passiv - in ihrer Freilaufrichtung entgegen der Vorschubrichtung zurückgezogen.Thus, while prior to switching the respective lower drive element 310, 412 with the clip strand on the associated magazine bar was engaged and this had driven in the direction indicated by an arrow 520, 522 feed direction, which thus coupled each upper drive element 312, 410 in its freewheeling direction pulled over the clip strand on the other magazine bar. After operating a position limit switch in the manner described above, the direction of rotation of the clip drives 316 is reversed. As a result, the upper drive elements 312, 410 in FIG. 6 automatically reach their position - automatically in a passive manner - by virtue of their pawl function - in engagement with the line of clips strung on the associated magazine bar. The previously engaged drive elements 310, 412 are now also due to their pawl function - passive - withdrawn in its freewheeling direction against the feed direction.

Der Wechsel zwischen der Sperr- und Freilaufeigenschaft der Antriebselemente ist nicht zwingend erforderlich, sondern kann durch eine mit der Richtungsumkehr des Schwenkantriebs verbundene, aktive radiale Ein- und Ausfahrbarkeit ersetzt werden. Jedoch ist die Schwenkbarkeit der Antriebselemente um deren Lager 318, 320 zwingend erforderlich, damit sich die beiden auf denselben Clipstrang wirkenden Antriebselemente 310 und 410 bzw. 312 und 412 in der in Fig. 7 gezeigten Weise ausweichen können.The change between the blocking and freewheeling property of the drive elements is not absolutely necessary, but can be replaced by an associated with the direction reversal of the pivot drive, active radial retractability and extensibility. However, the pivotability of the drive elements around their bearings 318, 320 is absolutely necessary, so that the two on the same clip strand acting drive elements 310 and 410 or 312 and 412 can dodge in the manner shown in Fig. 7.

In Fig. 6 ist noch zu erkennen, dass der Vorschubweg der Antriebselemente beinahe den vollständigen halbkreisförmigen Abschnitt 120 der Magazinstange 100 einschließt. Je größer dieser maximale Abstand zwischen jeweils zwei auf denselben Clipstrang wirkenden Antriebselemente ist, desto größer ist der Pufferbereich, der zum Wechsel der Clipspulen zur Verfügung steht. Solange sich das Ende eines aufgebrauchten Clipstranges innerhalb dieses Winkelbereiches befindet, hat man genügend Zeit, den Anfang eines neuen Clipstranges über den Eingang 130 der entsprechenden Magazinstange 100 aufzufädeln, zwischen dem Anfang des neuen Clipstrangs und dem Ende des alten Clipstrangs einen lückenlosen Anschluss wiederherzustellen und über einen nicht dargestellten, manuell betätigbaren Schalter eine Umschaltung der Laufrichtung zu bewirken. Der manuell betätigbare Schalter ist demnach mit dem oder den Positionsendschalter(n) über eine Steuerung verbunden, so dass die Betätigung irgendeines dieser Schalter die Richtungsumkehr aller Antriebselemente auslöst. In Folge des Umschaltens gelangt das jeweils zweite Antriebeselement (aktiv oder passiv) in Eingriff mit dem Anfang des neuen Clipstranges, der das Ende des alten Clipstrangs vor sich herschiebt. Ein lückenloser Nachschub an Clips kann so im laufenden Betrieb ohne Standzeiten sichergestellt werden.In Fig. 6 it can be seen that the feed path of the drive elements almost includes the complete semicircular portion 120 of the magazine bar 100. The larger this maximum distance between in each case two drive elements acting on the same clip strand, the larger is the buffer area which is available for changing the clip reels. As long as the end of a spent clip strand within this Angle range is located, you have enough time to thread the beginning of a new clip strand on the input 130 of the corresponding magazine bar 100 to restore a gap between the beginning of the new clip strand and the end of the old clip strand and a switch, not shown, manually operable switch to effect the direction of travel. The manually operable switch is thus connected to the position limit switch (s) via a controller so that the actuation of any one of these switches triggers the direction reversal of all the drive elements. As a result of the switching, the second drive element (active or passive) engages with the beginning of the new clip strand, which pushes the end of the old clip strand in front of him. A complete supply of clips can thus be ensured during operation without downtime.

Für das Wechseln der Clipspulen 512, 513 steht sogar ein noch größerer Zeitraum zur Verfügung, da das lose Ende eines aufgebrauchten Clipstrangs, an dem nach unten weisenden Eingang der entsprechenden Magazinstange hängt und über diesen restlos aufgezogen werden kann. Dieser zusätzliche Vorrat an Clips gibt der Bedienperson weitere Zeit, um den leeren Spulenkörper von der jeweiligen Aufnahme abzunehmen und einen vollen darauf zu setzen.For changing the clip spools 512, 513 even an even longer period of time is available, since the loose end of a used-up clip strand hangs on the downwardly facing entrance of the corresponding magazine bar and can be pulled over it completely. This additional supply of clips gives the operator more time to remove the empty bobbin from the respective receptacle and put a full on it.

Diese Funktionalität ist bei der gewählten Geometrie sogar auf sehr engem Raum gegeben. In den Fig. 6 bis 8 ist zu sehen, dass nämlich der Durchmesser der Spulenkörper 512 in etwa dem Durchmesser des halbkreisförmigen Abschnitts der Magazinstangen 100 entspricht. Die Magazinstange 100 nimmt gegenüber dem durch die ohnehin vorhandenen Spulenkörper 512, 513 benötigten Platz bei maximaler Länge des Puffervorrats keinen wesentlichen zusätzlichen Raum ein. Dies hat insbesondere den Vorteil der kompakten Bauweise. Jedoch ist die Erfindung nicht zwingend an diese Bauform gebunden. Den Schwenkantrieb vorausgesetzt, genügt die Forderung, dass der Vorschubweg kreissegmentförmig ist.This functionality is given in the selected geometry even in a very small space. In FIGS. 6 to 8 it can be seen that the diameter of the bobbin 512 corresponds approximately to the diameter of the semicircular portion of the magazine bars 100. The magazine bar 100 takes over the space required by the already existing bobbin 512, 513 space at maximum length of the buffer supply no significant additional space. This has the particular advantage of the compact design. However, the invention is not necessarily bound to this design. Assuming the pivot drive, satisfies the requirement that the feed path is circular segment-shaped.

In Fig. 7 sind die Antriebselemente in einer anderen Stellung zu sehen. Sie sind so konzipiert, dass das gerade außer Eingriff befindliche Antriebselement 410, 312, wenn es das im Eingriff auf denselben Clipstrang befindliche Antriebselement 310 bzw. 412 passiert um sein jeweiliges Lager 318, 320 passiv gegen die Federkraft weggeschwenkt wird. Auch an Stelle dieser vorteilhaften Weiterbildung kann eine andere Konstruktion treten. Beispielsweise können die Vorschubwege beider auf denselben Clipstrang wirkenden Antriebselemente völlig separiert sein, so dass es keine solche Begegnung geben kann. Auch unter diesen Umständen ließe sich eine Doppelclipführung mit nur zwei (Schwenk-)Antrieben realisieren, jedoch zu dem Preis einer weniger kompakten Bauform.In Fig. 7, the drive elements are seen in a different position. They are designed in such a way that the drive element 410, 312 which is just disengaged when it passes the drive element 310 or 412, which is in engagement with the same clip strand, is passively pivoted away about its respective bearing 318, 320 against the spring force. Also in place of this advantageous development, another construction can occur. For example, the feed paths of both acting on the same clip strand drive elements can be completely separated so that there can be no such encounter. Even under these circumstances, a double-clip guide with only two (rotary) drives could be realized, but at the price of a less compact design.

Fig. 8 zeigt dasselbe Ausführungsbeispiel der erfindungsgemäßen Clipzuführung, wobei in dieser Darstellung eine der beiden Magazinstangen 100 nach lösen der Arretierung 125 dergestalt weggeschwenkt ist, dass der zur Mündung in das entsprechende Vereinzelungsfenster vorgesehene Ausgang 128 zu diesem Vereinzelungsfenster beabstandet ist. Dieser Wegschwenkvorgang dient dem Zweck des Zugriffs auf das Vereinzelungsfenster und den Clipmechanismus der Verschließvorrichtung. Dies kann z.B. im Fall von Fehlfunktionen durch verklemmte oder aufgestaute Verschlussklammern in deren Vorschubkanal hinter dem Vereinzelungsfenster erforderlich werden. Vorteilhaft ist hierbei, dass durch die Schwenkbewegung der Magazinstange um ihre Aufnahme 123 die gesamte Magazinstange weiterhin an der Clipzuführung befestigt bleibt, während es bisher erforderlich war, die im Bereich ihres Ausgangs an das Gehäuse der Verschließeinrichtung angeflanschte Magazinstange völlig von der Verschließvorrichtung abzunehmen. Dies hatte den Folgeeffekt, dass zuerst der in der Magazinstange befindliche Clipstrang nach oben, d.h. gegen die Vorschubrichtung aus der Magazinstange herausgezogen werden muss, bevor die Magazinstange abgenommen und beiseite gelegt werden konnte. Demgegenüber kann der Clipstrang in der erfindungsgemäßen Magazinstange 100 beim Schwenken verbleiben. Er wird von dem jeweils im Eingriff befindlichen Antriebselement sogar in seiner Position gehalten, wodurch er in Folge der Schwenkbewegung auf der dem senkrechten Abschnitt 124 der Magazinstange gegenüberliegenden Seite wegen des Längenausgleichs etwas durchhängt.Fig. 8 shows the same embodiment of the clip supply according to the invention, in which one of the two magazine bars 100 is pivoted away after loosening the lock 125 such that the mouth provided in the corresponding separation window output 128 is spaced to this separation window. This Wegschwenkvorgang serves the purpose of access to the separation window and the clip mechanism of the closing device. This may be necessary, for example, in the case of malfunctions due to jammed or pent-up closure clips in their feed channel behind the separation window. The advantage here is that the entire magazine bar remains attached to the clip feed by the pivoting movement of the magazine bar to its receptacle 123, while it was previously necessary to remove the flanged in the region of its output to the housing of the closing magazine bar completely from the closing device. This had the consequence that first the clip strand located in the magazine bar has to be pulled upwards, ie, out of the magazine bar against the feed direction, before the magazine bar could be removed and set aside. In contrast, the clip strand can remain in the magazine bar 100 according to the invention during pivoting. He is even held by the respectively engaged drive element in its position, whereby he sags due to the pivotal movement on the opposite side of the vertical portion 124 of the magazine bar side because of the length compensation something.

Sollte es in Einzelfällen dennoch nötig sein, einen aufgezogenen Clipstrang von einer Magazinstage abzunehmen, dann wird dies erfindungsgemäß dadurch ermöglicht, dass mittels eines (weiteren) manuell betätigbaren Schalters, der das in Zusammenhang mit Fig. 3 beschriebene Heranfahren des radial beweglichen Teils 317 an den achsfesten Teil 316 der Nabe 315 auslöst, alle dem betreffenden Clipstrang zugeordneten Antriebselemente durch eine gleichzeitige Einfahrbewegung außer Eingriff gebracht werden können. Dann ist der Clipstrang frei und kann gegen die Vorschubrichtung von der Clipstange wieder abgezogen werden.Should it nevertheless be necessary in individual cases to remove a drawn-up clip strand from a magazine day, this is made possible by the fact that by means of a (further) manually operable switch, which described in connection with FIG. 3 approaching the radially movable part 317 to the Achsfesten part 316 of the hub 315 triggers, all the respective strand of the clip associated drive elements can be disengaged by a simultaneous retraction. Then the clip strand is free and can be withdrawn against the feed direction of the clip bar again.

Claims (19)

  1. A clip feeder comprising a magazine bar (100) having an entry (130) and an exit (128) for guiding a line of clips (510) from a clip supply to a separating window of a clipping device and further comprising a clip drive (300) disposed near said magazine bar (100),
    characterized in that the clip drive (300) comprises two drive elements (310, 312) which can be brought into engagement successively and alternately with the line of clips and which are configured in such a way that a first drive element (310) thus engaged runs in the feed direction on a first arcuate feed path, while a second disengaged drive element (312) runs in the opposite direction on a second arcuate feed path, and that the engagement and the direction of travel of the drive elements is reversible, wherein the first and the second feed paths have the same axis of rotation about which the drive elements (310, 312) are reciprocatingly pivotable.
  2. A clip feeder according to claim 1, characterized by position limit switches which are associated with first and second feed paths and which can be actuated by the corresponding drive elements (310, 312), said position limit switches being respectively configured to trigger the reversal in feed direction of the two drive elements (310, 312).
  3. A clip feeder according to one of the preceding claims, characterized in that the drive elements (310, 312) have pawls with a freewheeling direction in the feed direction and a locking direction opposite to the feed direction.
  4. A clip feeder according to one of the preceding claims,
    characterized in that the drive elements (310, 312) are moveable radially inwards for the purpose of disengagement and radially outwards for the purpose of engagement.
  5. A clip feeder according to claim 4,
    characterized in that the position limit switches are each configured to trigger the outward movement of the drive element (310, 312) whose direction of travel is reversed into the feed direction, and to trigger the inward movement of the drive element (310, 312) whose direction of travel is reversed into the direction opposite to the feed direction.
  6. A clip feeder according to claim 1 at least,
    characterized by a manually actuated switch which is configured to trigger the reversal of the direction of travel.
  7. A clip feeder according to claim 4 at least,
    characterized by a manually actuated switch which is configured to trigger the reversal of engagement.
  8. A clip feeder according to claim 4,
    characterized by a manually actuated switch which is configured to trigger the simultaneous disengagement of all the drive elements.
  9. A clip feeder according to claim 1,
    characterized in that the first and second feed paths are substantially congruent.
  10. A clip feeder according to claim 1,
    characterized by a holder for a reel holding the clip supply, comprising an axial mounting means whose axis coincides with the axis of rotation of the arcuate feed paths.
  11. A clip feeder according to claim 10,
    characterized in that the radius of the arcuate feed paths is substantially identical to the radius of the reel.
  12. A clip feeder according to claim 1,
    characterized in that the first and second arcuate feed paths are formed by an approximately semi-circular portion of the magazine bar (100) whose one end forms the entry into which the line of clips can be fed from below.
  13. A clip feeder according to claim 1,
    characterized in that the magazine bar (100) can be pivoted by means of a mounting means about the common axis of rotation of the arcuate feed paths.
  14. A clip feeder according to claim 1,
    characterized in that a deflection roller is interposed between the clip supply and the entry of the magazine bar (100).
  15. A clip feeder according to claim 1,
    characterized in that the drive elements (310, 312, 410, 412) can be actuated pneumatically.
  16. A double clip feeder (500) comprising two clip feeders according to one of the preceding claims, said two clip feeders being arranged in the region of the arcuate feed paths and working in opposite directions, and the rotational axes of said two clip feeders being coaxial in orientation.
  17. A double clip feeder (500) according to claim 16,
    characterized in that the respective first engaged drive element (310, 312, 410, 412) of the one clip feeder, is coupled to the respective disengaged drive element (310, 312, 410, 412) of the other clip feeder to form a respective pair (300, 400), and that only one respective drive is provided for actuating each of the pairs (300, 400).
  18. A double clip feeder according to claim 17,
    characterized in that the position limit switches of the two clip feeders are coupled to the two drives by means of a common controller in such a way that the first position limit switch to be actuated triggers the reversal in direction of all the drive elements (310, 312, 410, 412).
  19. A clipping device for partitioning portion packs of a sub-dividable filling material in a flexible tubular casing by constricting the filled tube and applying two clips by means of a double clipping device (500) according to one of claims 16 to 18 to the gathered end formed by axial displacement of the filling material.
EP05004723A 2004-03-03 2005-03-03 Clipsupplyer Not-in-force EP1571089B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004010391A DE102004010391B3 (en) 2004-03-03 2004-03-03 Clip supply used in the manufacture of sausages comprises a magazine rod for guiding a clip strand from the supply to a closing unit, and a clip drive having two drive elements running in opposing directions
DE102004010391 2004-03-03

Publications (2)

Publication Number Publication Date
EP1571089A1 EP1571089A1 (en) 2005-09-07
EP1571089B1 true EP1571089B1 (en) 2006-11-08

Family

ID=34745366

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05004723A Not-in-force EP1571089B1 (en) 2004-03-03 2005-03-03 Clipsupplyer

Country Status (5)

Country Link
US (1) US7520040B2 (en)
EP (1) EP1571089B1 (en)
AT (1) ATE344759T1 (en)
DE (2) DE102004010391B3 (en)
ES (1) ES2276360T3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202005014340U1 (en) 2005-09-09 2007-02-01 Tipper Tie Technopack Gmbh Closure clip for a packaging tube and device for processing the closing clip
DE202012004217U1 (en) * 2012-04-27 2013-07-30 Tipper Tie Technopack Gmbh Feed device for clip machine

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Also Published As

Publication number Publication date
US7520040B2 (en) 2009-04-21
DE102004010391B3 (en) 2005-08-18
DE502005000164D1 (en) 2006-12-21
EP1571089A1 (en) 2005-09-07
ES2276360T3 (en) 2007-06-16
US20050241271A1 (en) 2005-11-03
ATE344759T1 (en) 2006-11-15

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