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EP2173936B1 - Device for needling a fibrous web - Google Patents

Device for needling a fibrous web Download PDF

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Publication number
EP2173936B1
EP2173936B1 EP08786185.2A EP08786185A EP2173936B1 EP 2173936 B1 EP2173936 B1 EP 2173936B1 EP 08786185 A EP08786185 A EP 08786185A EP 2173936 B1 EP2173936 B1 EP 2173936B1
Authority
EP
European Patent Office
Prior art keywords
beam support
pivot
rocker
swing arm
linkage rod
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
EP08786185.2A
Other languages
German (de)
French (fr)
Other versions
EP2173936A1 (en
Inventor
Tilman Reutter
Andreas Plump
Andreas Mayer
Daniel Bu
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.)
Hi Tech Textile Holding GmbH
Original Assignee
Hi Tech Textile Holding GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hi Tech Textile Holding GmbH filed Critical Hi Tech Textile Holding GmbH
Publication of EP2173936A1 publication Critical patent/EP2173936A1/en
Application granted granted Critical
Publication of EP2173936B1 publication Critical patent/EP2173936B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H18/00—Needling machines
    • D04H18/02—Needling machines with needles

Definitions

  • the invention relates to a device for needling a fibrous web according to the preamble of claim 1.
  • a device for needling a fiber web in which the guide means is formed by a rocker, which is held at one end via a pivot bearing on a machine frame and which is coupled to the opposite free end via a hinge with the beam support.
  • the beam carrier is thus guided to a predetermined by the rocker track.
  • the guideway of the beam carrier is in this case a circular arc.
  • curved needles are used, which are adapted to the guideway of the beam support.
  • a further device for needling a fiber web in which the guide device for straight guidance of the beam support is formed by two rockers, which are held against a machine frame in support bearings.
  • the support bearings each have at least one tooth space, in which engages the tooth formed as the end of the rocker.
  • the known device thus requires a larger space requirement in order to be able to guide the outwardly projecting rockers in the machine frame.
  • the lubrication and sealing of the teeth between the wings and the support bearings is particularly problematic.
  • the guide device has at least one guide rod, which is guided in a guide bush held on a machine frame. A free end of the guide rod is connected to the beam support, so that the beam support maintains a predetermined by the guide rod and the guide bush guide during vertical movement. Also, this known device is based on a sliding pair of two parts for guiding the beam support whose lubrication and sealing are particularly problematic and require increased equipment complexity.
  • Another object of the invention is to make the guide device for straight guidance of the beam support in the device according to the invention flexible and reliable.
  • the invention has the particular advantage that the articulation of the beam support relative to the machine frame is maintained by a guided in the pivot bearing rocker.
  • the predetermined via the rocker track can be hereby advantageously converted by the interposition of a coupling kinematics and adapt to the requirements of needling.
  • the opposite end of the rocker is connected via a plurality of links of a coupling kinematics with the beam support.
  • the effective on the beam support guideway for straight guidance of the needle bar can thus be determined by the interaction of the rocker and the coupling kinematics.
  • the links of the coupling kinematics are formed by a link rod and a frame lever, wherein the link rod is connected by a hinge to the beam support and wherein the frame lever is held by a pivot bearing on the machine frame.
  • the vertical movement of the beam support can only record and guide by rotatable levers of the guide means.
  • the rotational movements of the lever means can be advantageously made possible by the pivot bearings or hinges, so that the entire guide means a simple Tribology has. Both rotary bearings and hinges can be sealed against the environment in a simple manner, so that a stable and secure guidance of the beam support is guaranteed.
  • a first variant of the frame lever is designed as a rocker arm, which has the pivot bearing in a central region. With one end of the rocker arm is connected via a hinge to the articulation rod and with the opposite end by a second pivot to the rocker.
  • the caused by the connecting rod to the beam carrier guideway can be almost straight depending on the vote of the lengths of the connecting rod and the rocker arm.
  • the frame lever is formed as a second rocker, wherein the first rocker and the second rocker are each connected via a hinge to the articulation rod according to a preferred embodiment of the invention.
  • the pivot point between the connecting rod and the beam support can be performed almost straight over a maximum vertical stroke.
  • This variant of the invention is particularly suitable for carrying out high-quality needling on fiber webs.
  • the plurality of needles can be guided on the needle bar exactly in a vertical upward and downward movement for needling the fiber web, so that a very uniform needling structure within the fiber web can be generated.
  • the arrangement of the rockers can be freely selected depending on the type of machine, the installation options and the desired guiding properties.
  • the hinges of the wings can be formed at a distance from each other on the articulation rod, wherein the pivot between the beam carrier and the connecting rod is formed at a free end of the connecting rod or in a central region of the connecting rod.
  • This variant of the invention can be developed in a particularly advantageous manner in such a way that one of the pivot bearings of the rockers is designed as an eccentric bearing on the circumference of an eccentric shaft, which eccentric shaft can be selectively driven or retained by means of a movement device.
  • the eccentric shaft can be driven by means of the movement device.
  • the eccentric shaft is retained by the movement device as needed, so that only the straight guide generated by the articulation rod is effective on the beam support.
  • the two rotary bearings of the rockers are preferably arranged at a distance from each other above the beam support. This makes it possible to realize particularly compact and space-saving guide devices.
  • the two pivot bearings of the rockers can be arranged symmetrically according to an advantageous development of the invention to a beam center of the beam carrier.
  • the swivel joint is preferably arranged on the beam support at the middle of the beam for connecting the connecting rod.
  • the vertical movement of the beam carrier can thus be safely and stably transmitted to the articulation rod for linear guidance.
  • the vertical drive is preferably carried out according to a development of the invention such that two driven via separate eccentric connecting rods are connected to the beam support.
  • the eccentric drives each have a crankshaft, which is connected via a connecting rod with the connecting rod.
  • the connecting rods are connected with their connecting rod eyes via swivel joints with the beam support.
  • the rocker and the coupling kinematics of the guide device is preferably arranged between the connecting rods of the vertical drive in order to obtain a very narrow machine pitch.
  • each of the vertical drives is preferably associated with a linear guide whose wings are each connected via a coupling kinematics with the beam support.
  • a superimposed horizontal movement of the needle bar can also be advantageously realized by the development of the invention, in which the vertical drive has a phase adjustment for phase adjustment of the two crankshafts.
  • the crankshafts can be driven offset by a phase angle, so that the beam carrier executes a tilting movement, which also leads to a horizontal movement by the vertical distance at the needles in addition to the vertical movement.
  • This development is particularly advantageous for carrying out small, continuously variable, adjustable horizontal strokes on the needle bar.
  • Fig. 1 a first embodiment of the device according to the invention for needling a fiber web is shown.
  • the embodiment of the device according to the invention Fig. 1 shows a beam support 2, which holds a needle bar 1 on its underside.
  • the needle bar 1 carries on its underside a needle board 3 with a plurality of needles 4.
  • the needle board 3 with the needles 4 is associated with a bed plate 29 and a scraper 28, wherein between the bed plate 29 and the scraper 28, a fibrous web 30 with substantially constant Feed rate is performed.
  • the direction of movement of the fiber web 30 is characterized by an arrow.
  • the vertical drive 5 is formed in this embodiment by two parallel eccentric 6.1 and 6.2.
  • the eccentric 6.1 and 6.2 have two parallel juxtaposed crankshafts 9.1 and 9.2, which are arranged above the beam carrier 2.
  • the crankshafts 9.1 and 9.2 each have at least one eccentric section for receiving at least one connecting rod.
  • Fig. 1 are arranged on a beam support 2 connecting rods 7.1 and 7.2, which are held with their connecting rods 10.1 and 10.2 to the crankshaft 9.1 and 9.2.
  • the connecting rods 7.1 and 7.2 are connected with their opposite connecting rod eyes 11.1 and 11.2 by two pivot hinges 8.1 and 8.2 with the beam support 2.
  • the crankshaft 9.1 forms with the connecting rod 7.1 and the crankshaft 9.2 with the connecting rod 7.2 each one of the eccentric 6.1 and 6.2 to guide the beam support 2 in an up and down movement.
  • the crankshafts 9.1 and 9.2 are driven synchronously or in opposite directions synchronously, so that the beam support 2 is guided at least approximately parallel.
  • a guide device 12 which in this embodiment has a rocker 13 which is connected via a pivot bearing 14 with a machine frame 15.
  • the free end of the rocker 13 is connected via a coupling kinematics 16 with the beam support 2.
  • the coupling kinematics 16 is formed in this embodiment by a Anlenkstange 17 and a second rocker 22.
  • the second rocker 22 is rotatably supported at a distance from the first rocker 13 by a second pivot bearing 23 with the machine frame 15.
  • the free end of the first rocker 13 and the free end of the second rocker 22 are at a distance each coupled via a hinge 24.1 and 24.2 with the articulation rod 17.
  • the hinges 24.1 and 24.2 are formed on an end portion of the articulation rod 17. With the opposite end portion of the connecting rod 17 is connected by a hinge 20 to the beam support 2.
  • the swivel joint 20 is formed in the middle of the beam of the beam support 2.
  • the rocker 13 and the links of the coupling kinematics 16 are arranged above the beam carrier 2.
  • the pivot bearing 14 and 23 are arranged on the machine frame 15 between the connecting rods 7.1 and 7.2 of the vertical drive 5. This results in a very compact and narrow design.
  • the vertical drive 5 and the guide device 12 thus form a compact unit above the beam support 2.
  • the position of the pivot bearing 14 and 23 and the lengths of the first rocker 13 and the second rocker 22 are chosen such that the articulation rod 17 at the articulation point of the beam support 2, which is determined by the pivot 20, a straight guide of the beam support 2 in the vertical direction over the entire stroke of the vertical drive 5 executes.
  • the straight guide of the beam support 2 is advantageously realized relative to the machine frame 15 exclusively by rotational movements of the parts of the guide means 12.
  • the pivot bearing 14 and 23 and the pivot joints 24.1, 24.2 and 20 can be performed with low friction, so that a total of low-friction linear guide of the beam support 2 is present, which require no additional torque through the vertical drive 5.
  • the use of the pivot bearing 14 and 23 and hinges 20, 24.1, 24.2 also have the advantage that commercial lubrication systems are used, which have a seal against the environment, so that no lubricant residues could get into the environment.
  • the crankshaft 9.1 and 9.2 of the vertical drive 5 are preferably driven in opposite directions of rotation and the same speeds.
  • the connecting rods 7.1 and 7.2 By the connecting rods 7.1 and 7.2, the movement of the crankshaft 9.1 and 9.2 transmitted to the beam support 2, which performs an up and down movement.
  • the vertical movement of the beam support 2 is received via the connecting rod 17 of the guide device 12 and transmitted to the rockers 13 and 22.
  • the fixed to the pivot bearings 14 and 23 rockers 13 and 22 perform a rotational movement.
  • the kinematics of the rocker 13, the rocker 22 and the link rod 17 is selected such that the free end of the link rod 17 moves with the hinge 20 on a vertical.
  • the beam support 2 is held on a straight guideway during the entire stroke of the vertical drive 5.
  • the links of the coupling kinematics 16 for connecting the rocker 13 to the beam support 2 are designed as an articulation rod and a second rocker.
  • the links of the coupling kinematics 16 can be realized by other lever geometries.
  • FIG. 2 illustrated embodiment of the device according to the invention represents only one more way to connect the fixed via a pivot bearing on the machine frame rocker via a coupling kinematics with the beam support for straight guidance of the beam support.
  • the embodiment according to Fig. 2 is identical in construction and configuration of the vertical drive 5, the beam support 2 as well as the held by the beam support 2 devices to the aforementioned embodiment, so that reference is made to the preceding description.
  • the guide device 12 is arranged substantially laterally next to the connecting rods 7.1 and 7.2.
  • the guide device 12 has for this purpose a rocker 13 which is fixed to a pivot bearing 14 relative to a machine frame 15.
  • the rocker 13 is rotatably supported in the pivot bearing 14.
  • the coupling kinematics 16 is formed by a rocker arm 18 and a link rod 17.
  • the rocker arm 18 is held laterally above the beam support 2 at a pivot bearing 19 in the machine frame 15.
  • the rocker arm 18 is pivotally fixed to the pivot bearing 19, so that a free upper end and a free lower end are pivotable relative to the pivot bearing 19.
  • the upper free end of the rocker arm 18 is pivotally connected via a rotary joint 21.2 with the free end of the rocker 13.
  • the lower end of the tilt lever 18 is pivotally coupled to the articulation rod 17 via the pivot 21.1.
  • the connecting rod 17 protrudes with a free end to the middle of the beam support 2 and is there articulated via the rotary joint 20 to the beam support 2.
  • the vertical movement of the beam support 2, which is driven by the vertical drive 5, is held via the connecting rod 17 in a certain by the kinematics of the guide means 12 guideway.
  • the beam support 2 can lead to an approximate straight guideway. Again, the translational movement of the beam support 2 is guided solely by rotational movements of the parts of the guide means 15.
  • FIG. 2 illustrated embodiment of the device according to the invention is particularly suitable to selectively drive the beam support superimposed with a horizontal stroke.
  • the pivot bearing 14 of the rocker 13 is replaced by an eccentric bearing and an eccentric shaft, which is driven via a movement device for initiating a horizontal stroke on the rocker 13.
  • the eccentric shaft is detected, so that the eccentric acts exclusively as a pivot bearing of the rocker. Thus no horizontal movement is initiated at the rocker.
  • Fig. 3 is a further embodiment of the device according to the invention shown schematically in a side view.
  • the embodiment according to Fig. 3 is essentially identical to the embodiment according to Fig. 1 , so that at this point only the differences will be explained and otherwise reference is made to the above description.
  • a guide device 12 is provided which consists of a first rocker 13 and a second rocker 22.
  • the first rocker 13 is fixed via the pivot bearing 14 on the machine position 15.
  • the pivot bearing 14 is for this purpose arranged laterally next to the beam support 2.
  • the second rocker 22 is held on a pivot bearing 23 which is arranged on the opposite side of the beam support 2 on the machine frame 15.
  • the first rocker 13 and the second rocker 22 protrude opposite to the beam center of the beam support 2.
  • a link rod 17 is provided, which is connected in the central region via a rotary joint 20 with the beam support 2.
  • the free ends of the connecting rod 17 are coupled via the swivel joints 24.1 and 24.2 with the first rocker 13 and with the second rocker 22.
  • the rockers 13 and 22 have an equal length.
  • the rockers 13 and 22 are arranged in different angular positions relative to the beam support 2.
  • one at the articulation point of the articulation rod 17, which is determined by the rotary joint 20, produce an approximately straight guideway during the vertical movement of the beam carrier 2.
  • the aforementioned embodiments of the devices according to the invention are suitable for needling a fibrous web, in which the needles are guided in a vertical up and down movement.
  • the straight guide of the beam support causes the needles perform a vertical movement as exact as possible.
  • the guide means 12 can advantageously extend such that either the beam support 2 in addition to the up and down movement performs a reciprocating motion.
  • Fig. 4 an embodiment of the device according to the invention is shown schematically in a side view. The embodiment is identical to the embodiment according to Fig. 1 so that reference is made to the above description and only the differences will be explained below.
  • Fig. 1 is in the embodiment after Fig. 4 within the guide device 12, the pivot bearing of the second rocker 22 is replaced by an eccentric 25.
  • the eccentric bearing 25 is formed on an eccentric shaft 26 which drives the rocker 22 during rotation.
  • the eccentric shaft 26 is coupled to a movement device 27, by means of which the eccentric shaft 26 can either be held or driven in its position.
  • the rocker 22 With a fixed eccentric shaft 26, the rocker 22 is fixed by the eccentric 25 and can only around the eccentric 25 in a rotary motion around to lead.
  • the connecting rod 17 acts relative to the beam support 2 exclusively for guiding the vertical movement of the beam support.
  • the free end of the articulation rod 17 is guided in the pivot 20 for this purpose preferably on a vertical, so that the beam support 2 receives a straight guide during the Vertikalhubes.
  • the beam support 2 is driven in a constant horizontal stroke superimposed on the vertical movement.
  • the articulation rod 17 acts as a push rod and guides the beam support 2 via the rotary joint 20 in a superimposed horizontal movement.
  • the beam support 2 and thus the needle bar 11 perform an elliptical movement.
  • the speed of the eccentric shaft 26 and the rotational speed of the crankshaft 9.1 and 9.2 of the vertical drive 5 are the same in this case, so that adjusts a dependent of the eccentricity of the eccentric shaft 26 horizontal stroke on the needle bar 1.
  • the rotary bearing 14 of the rocker 13 could alternatively be formed by an eccentric bearing on an eccentric shaft, so that when the eccentric shaft is driven via the rocker 13, a horizontal movement component is introduced.
  • the second rocker 22 would be guided on a pivot bearing on the machine frame.
  • both rockers it would also be possible for both rockers to be held on eccentric shafts, with the eccentric shafts being selectively drivable or fixable by means of a movement device.
  • the device according to the invention for needling a fibrous web thus offers a high degree of flexibility for guiding and for driving a needle bar.
  • pure vertical needling can be realized for the production of high-quality fiber products having a uniform fiber structure.
  • Fig. 5 is a further embodiment of the device according to the invention shown schematically in a side view.
  • the embodiment according to Fig. 5 is identical to the embodiment with the exception of the vertical drive 5 Fig. 1 executed, so that at this point only the differences of the vertical drives will be explained and otherwise reference is made to the above description.
  • the vertical drive 5 is associated with a phase adjustment 31.
  • the phase adjustment device 31 has two servomotors 33.1 and 33.2, which are assigned to the crankshafts 9.1 and 9.2.
  • the servomotors 33.1 and 33.2 are connected to a control device 32. Via the control device 32, the servomotors 33.1 and 33.2 can be activated independently of one another in order to rotate the crankshafts 9.1 and 9.2 in their bearings.
  • a phase angle between the crankshafts 9.1 and 9.2 can be set arbitrarily.
  • the pure vertical upward and downward movement of the needle bar 1 can thereby perform a superimposed horizontal movement of the beam support 2.
  • the phase adjustment device 31 could alternatively also be formed by a servomotor and an adjusting mechanism acting on the crankshafts 9.1 and 9.2. It is essential here that the crankshafts 9.1 and 9.2 are driven offset from one another by a phase angle, in order in addition to the vertical movement Also to be able to perform a horizontal movement for needling the fiber web.
  • the leadership of the movement of the beam support is also in this case by the guide means 12, as in the embodiment according to Fig. 1 is effected by the rocker 13 and the coupling kinematics 16 formed by a link rod 17 and the second rocker 22.
  • FIGS. 1 to 4 illustrated embodiments of the device according to the invention for needling a fiber web are exemplary in the embodiment and in the structure of the guide device for straight guidance of the beam support.
  • the coupling kinematics can also have more than two links in order to couple the rocker to the beam support.
  • several vertical drives can simultaneously act on a beam carrier. In this case, each of the vertical drives or a group of vertical drives can be assigned one of several linear guides.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zum Vernadeln einer Faserbahn gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a device for needling a fibrous web according to the preamble of claim 1.

Zum Verfestigen und Strukturieren von gelegten Faserbahnen ist es bekannt, die Faserbahnen mit einer Vielzahl von Nadeln zu durchstoßen, wobei die Nadeln in einer oszillierenden Auf- und Abwärtsbewegung geführt sind. Da die Nadeln nicht glatt sondern mit in Einstichsrichtung geöffneten Widerhäkchen versehen sind, werden beim Einstechen der Nadeln in die Faserbahn einzelne Fasern der Faserbahn erfasst und innerhalb der Faserbahn umorientiert. Hierdurch entsteht der gewünschte Verfilzungs- und Verfestigungseffekt innerhalb der Faserbahn. Zur Führung der Vielzahl der Nadeln werden Vorrichtungen verwendet, bei welchen die Nadeln an einer Unterseite eines Nadelbalkens angeordnet sind. Der Nadelbalken wird über einen beweglichen Balkenträger gehalten, der mittels eines Vertikalantriebes zu einer oszillierenden Vertikalbewegung angetrieben wird. Damit die Nadeln bei der Vertikalbewegung möglichst gerade in die Faserbahn eingetaucht werden können, ist es weiterhin bekannt, dass an dem Balkenträger eine Führungseinrichtung angreift, durch welche die Vertikalbewegung des Balkenträgers geführt wird.For solidifying and structuring of laid fiber webs, it is known to pierce the fiber webs with a plurality of needles, wherein the needles are guided in an oscillating up and down movement. Since the needles are not smooth but are provided with barbs that are open in the puncturing direction, individual fibers of the fibrous web are captured during the insertion of the needles into the fibrous web and reoriented within the fibrous web. This creates the desired felting and consolidation effect within the fibrous web. To guide the plurality of needles devices are used, in which the needles are arranged on an underside of a needle bar. The needle bar is held by a movable beam support, which is driven by means of a vertical drive to an oscillating vertical movement. So that the needles can be dipped as straight as possible into the fiber web during the vertical movement, it is furthermore known that a guide device acts on the beam support, through which the vertical movement of the beam support is guided.

So ist beispielsweise aus der DE 44 31 055 A1 eine Vorrichtung zum Vernadeln einer Faserbahn bekannt, bei welcher die Führungseinrichtung durch eine Schwinge gebildet ist, die mit einem Ende über ein Drehlager an einem Maschinengestell gehalten wird und die mit dem gegenüberliegenden freien Ende über ein Drehgelenk mit dem Balkenträger gekoppelt ist. Der Balkenträger wird somit auf eine durch die Schwinge vorbestimmte Führungsbahn geführt. Die Führungsbahn des Balkenträgers ist hierbei kreisbogenförmig. Um trotzdem definierte Einstichskanäle mit den Nadeln zu erzeugen, werden gekrümmte Nadeln eingesetzt, die der Führungsbahn des Balkenträgers angepasst sind.For example, from the DE 44 31 055 A1 a device for needling a fiber web is known in which the guide means is formed by a rocker, which is held at one end via a pivot bearing on a machine frame and which is coupled to the opposite free end via a hinge with the beam support. The beam carrier is thus guided to a predetermined by the rocker track. The guideway of the beam carrier is in this case a circular arc. To still defined To create puncture channels with the needles, curved needles are used, which are adapted to the guideway of the beam support.

Aus der US 4,241,479 ist eine weitere Vorrichtung zum Vernadeln einer Faserbahn bekannt, bei welcher die Führungseinrichtung zur Geradführung des Balkenträgers durch zwei Schwingen gebildet wird, die gegenüber einem Maschinengestell in Stützlager gehalten werden. Die Stützlager weisen jeweils zumindest eine Zahnlücke auf, in welche das als Zahn ausgebildete Ende der Schwinge eingreift. Die bekannte Vorrichtung erfordert somit einen größeren Platzbedarf, um die nach außen ragenden Schwingen in dem Maschinengestell führen zu können. Zudem stellt sich die Schmierung und Abdichtung der Verzahnungen zwischen den Schwingen und den Stützlagern besonders problematisch dar.From the US 4,241,479 a further device for needling a fiber web is known, in which the guide device for straight guidance of the beam support is formed by two rockers, which are held against a machine frame in support bearings. The support bearings each have at least one tooth space, in which engages the tooth formed as the end of the rocker. The known device thus requires a larger space requirement in order to be able to guide the outwardly projecting rockers in the machine frame. In addition, the lubrication and sealing of the teeth between the wings and the support bearings is particularly problematic.

Aus der EP 0 364 105 A1 ist eine weitere Vorrichtung zum Vernadeln einer Faserbahn bekannt, bei welcher die Führungseinrichtung zumindest eine Führungsstange aufweist, die in einer an einem Maschinengestell gehaltenen Führungsbuche geführt ist. Ein freies Ende der Führungsstange ist mit dem Balkenträger verbunden, so dass der Balkenträger bei der Vertikalbewegung eine durch die Führungsstange und die Führungsbuchse vorbestimmte Führungsbahn einhält. Auch diese bekannte Vorrichtung basiert auf eine Gleitpaarung zweier Teile zur Führung des Balkenträgers, deren Schmierung und Abdichtung besonders problematisch sind und einen erhöhten apparativen Aufwand erfordern.From the EP 0 364 105 A1 Another apparatus for needling a fibrous web is known, in which the guide device has at least one guide rod, which is guided in a guide bush held on a machine frame. A free end of the guide rod is connected to the beam support, so that the beam support maintains a predetermined by the guide rod and the guide bush guide during vertical movement. Also, this known device is based on a sliding pair of two parts for guiding the beam support whose lubrication and sealing are particularly problematic and require increased equipment complexity.

Die im Stand der Technik bekannten Führungseinrichtungen zur Geradführung des Balkenträgers lassen zudem nur einen Antrieb des Nadelbalkens in vertikaler Richtung zu. Umrüstungen der bekannten Vorrichtungen zur Ausführung einer horizontalen Bewegung des Balkenträgers sind nicht ausführbar bzw. mit erheblichem Aufwand verbunden.The well-known in the prior art guide devices for straight guidance of the beam support also only allow a drive of the needle bar in the vertical direction. Conversions of the known devices for carrying out a horizontal movement of the beam support are not executable or associated with considerable effort.

Es ist nun Aufgabe der Erfindung, eine Vorrichtung zum Vernadeln einer Faserbahn der gattungsgemäßen Art mit einer Führungseinrichtung auszubilden, die eine Geradführung des Balkenträgers in Längsrichtung mittels einer kompakten und einfachen Kinematik ermöglicht.It is an object of the invention to provide a device for needling a fiber web of the generic type with a guide device, which a straight guide of the beam carrier in the longitudinal direction by means of a compact and simple kinematics allows.

Ein weiteres Ziel der Erfindung ist es, die Führungseinrichtung zur Geradführung des Balkenträgers bei der erfindungsgemäßen Vorrichtung flexibel und betriebssicher zu gestalten.Another object of the invention is to make the guide device for straight guidance of the beam support in the device according to the invention flexible and reliable.

Diese Aufgabe wird erfindungsgemäß durch eine Vorrichtung zum Vernadeln einer Faserbahn mit den Merkmalen nach Anspruch 1 gelöst.This object is achieved by a device for needling a fiber web with the features of claim 1.

Vorteilhafte Weiterbildungen der Erfindung sind durch die Merkmale und Merkmalskombinationen der jeweiligen Unteransprüche definiert.Advantageous developments of the invention are defined by the features and feature combinations of the respective subclaims.

Die Erfindung besitzt den besonderen Vorteil, dass die Anlenkung des Balkenträgers gegenüber dem Maschinengestell durch eine im Drehlager geführte Schwinge erhalten bleibt. Die über die Schwinge vorbestimmte Führungsbahn lässt sich hierbei vorteilhaft durch die Zwischenschaltung einer Koppelkinematik umwandeln und den Erfordernissen der Vernadelung anpassen. So ist erfindungsgemäß das gegenüberliegende Ende der Schwinge über mehrere Glieder einer Koppelkinematik mit dem Balkenträger verbunden. Die an dem Balkenträger wirksame Führungsbahn zur Geradführung des Nadelbalkens lässt sich somit durch das Zusammenwirken der Schwinge und der Koppelkinematik bestimmen.The invention has the particular advantage that the articulation of the beam support relative to the machine frame is maintained by a guided in the pivot bearing rocker. The predetermined via the rocker track can be hereby advantageously converted by the interposition of a coupling kinematics and adapt to the requirements of needling. Thus, according to the invention, the opposite end of the rocker is connected via a plurality of links of a coupling kinematics with the beam support. The effective on the beam support guideway for straight guidance of the needle bar can thus be determined by the interaction of the rocker and the coupling kinematics.

Bei einer bevorzugten Weiterbildung der Erfindung werden die Glieder der Koppelkinematik durch eine Anlenkstange und einen Gestellhebel gebildet, wobei die Anlenkstange durch ein Drehgelenk mit dem Balkenträger verbunden ist und wobei der Gestellhebel durch ein Drehlager an dem Maschinengestell gehalten ist. Somit lässt sich die vertikale Bewegung des Balkenträgers ausschließlich durch drehbare Hebel der Führungseinrichtungen aufnehmen und führen. Die Drehbewegungen der Hebelmittel können vorteilhaft durch die Drehlager oder Drehgelenke ermöglicht werden, so dass die gesamte Führungseinrichtung eine einfache Tribologie aufweist. Sowohl Drehlager als auch Drehgelenke lassen sich gegenüber der Umgebung in einfacher Art und Weise abdichten, so dass eine stabile und sichere Führung des Balkenträgers gewährleistet ist.In a preferred embodiment of the invention, the links of the coupling kinematics are formed by a link rod and a frame lever, wherein the link rod is connected by a hinge to the beam support and wherein the frame lever is held by a pivot bearing on the machine frame. Thus, the vertical movement of the beam support can only record and guide by rotatable levers of the guide means. The rotational movements of the lever means can be advantageously made possible by the pivot bearings or hinges, so that the entire guide means a simple Tribology has. Both rotary bearings and hinges can be sealed against the environment in a simple manner, so that a stable and secure guidance of the beam support is guaranteed.

Je nach Ausbildung des Gestellhebels innerhalb der Koppelkinematik lassen sich unterschiedliche Führungsbahnen zur Geradführung des Balkenträgers realisieren. Bei einer ersten Variante ist der Gestellhebel als ein Kipphebel ausgebildet, welcher in einem mittleren Bereich das Drehlager aufweist. Mit einem Ende ist der Kipphebel über ein Drehgelenk mit der Anlenkstange und mit dem gegenüberliegenden Ende durch ein zweites Drehgelenk mit der Schwinge verbunden. Die durch die Anlenkstange an dem Balkenträger bewirkte Führungsbahn lässt sich je nach Abstimmung der Längen der Anlenkstange und des Kipphebels annähernd gerade ausführen.Depending on the design of the frame lever within the coupling kinematics, different guideways for straight guidance of the beam carrier can be realized. In a first variant of the frame lever is designed as a rocker arm, which has the pivot bearing in a central region. With one end of the rocker arm is connected via a hinge to the articulation rod and with the opposite end by a second pivot to the rocker. The caused by the connecting rod to the beam carrier guideway can be almost straight depending on the vote of the lengths of the connecting rod and the rocker arm.

Um möglichst auf engem Raum eine gerade Führungsbahn des Balkenträgers zu erzeugen, ist gemäß einer bevorzugten Weiterbildung der Erfindung der Gestellhebel als eine zweite Schwinge ausgebildet, wobei die erste Schwinge und die zweite Schwinge jeweils über ein Drehgelenk mit der Anlenkstange verbunden sind. Durch Wahl der Positionen der Drehlager sowie der Längen der Schwingen lässt sich der Anlenkpunkt zwischen der Anlenkstange und dem Balkenträger über einen maximalen vertikalen Hub nahezu gerade ausführen. Diese Variante der Erfindung ist besonders geeignet, um hochqualitative Vernadelungen an Faserbahnen auszuführen. Die Vielzahl der Nadeln lassen sich an dem Nadelbalken exakt in einer vertikalen Auf- und Abwärtsbewegung zum Vernadeln der Faserbahn führen, so dass eine sehr gleichmäßige Vernadelungsstruktur innerhalb der Faserbahn erzeugbar ist.In order to produce as narrow space as possible a straight track of the beam support, the frame lever is formed as a second rocker, wherein the first rocker and the second rocker are each connected via a hinge to the articulation rod according to a preferred embodiment of the invention. By selecting the positions of the pivot bearing and the lengths of the rockers, the pivot point between the connecting rod and the beam support can be performed almost straight over a maximum vertical stroke. This variant of the invention is particularly suitable for carrying out high-quality needling on fiber webs. The plurality of needles can be guided on the needle bar exactly in a vertical upward and downward movement for needling the fiber web, so that a very uniform needling structure within the fiber web can be generated.

Die Anordnung der Schwingen lässt sich in Abhängigkeit von dem Maschinentyp, den Einbaumöglichkeiten sowie den gewünschten Führungseigenschaften frei wählen. So lassen sich beispielsweise die Drehgelenke der Schwingen mit Abstand zueinander an der Anlenkstange ausbilden, wobei das Drehgelenk zwischen dem Balkenträger und der Anlenkstange an einem freien Ende der Anlenkstange oder in einem mittleren Bereich der Anlenkstange ausgebildet ist.The arrangement of the rockers can be freely selected depending on the type of machine, the installation options and the desired guiding properties. Thus, for example, the hinges of the wings can be formed at a distance from each other on the articulation rod, wherein the pivot between the beam carrier and the connecting rod is formed at a free end of the connecting rod or in a central region of the connecting rod.

Besonders vorteilhaft lässt sich diese Erfindungsvariante derart weiterbilden, dass eines der Drehlager der Schwingen als ein Exzenterlager am Umfang einer Exzenterwelle ausgebildet ist, welche Exzenterwelle mittels einer Bewegungseinrichtung wahlweise antreibbar oder festhaltbar ist. Damit besteht die Möglichkeit, einen konstanten Horizontalhub an dem Balkenträger zu erzeugen. Hierzu lässt sich die Exzenterwelle mittels der Bewegungseinrichtung antreiben. Alternativ wird durch die Bewegungseinrichtung die Exzenterwelle bei Bedarf festgehalten, so dass lediglich die durch die Anlenkstange erzeugte Geradführung an dem Balkenträger wirksam ist.This variant of the invention can be developed in a particularly advantageous manner in such a way that one of the pivot bearings of the rockers is designed as an eccentric bearing on the circumference of an eccentric shaft, which eccentric shaft can be selectively driven or retained by means of a movement device. This makes it possible to generate a constant horizontal stroke on the beam carrier. For this purpose, the eccentric shaft can be driven by means of the movement device. Alternatively, the eccentric shaft is retained by the movement device as needed, so that only the straight guide generated by the articulation rod is effective on the beam support.

Je nach Ausführung der Anlenkstange und Anbindung der Drehgelenke der Schwingen werden die beiden Drehlager der Schwingen bevorzugt mit Abstand zueinander oberhalb des Balkenträgers angeordnet. Damit lassen sich besonders kompakte und platzeinsparende Führungseinrichtungen realisieren.Depending on the design of the connecting rod and connection of the swivel joints of the rockers, the two rotary bearings of the rockers are preferably arranged at a distance from each other above the beam support. This makes it possible to realize particularly compact and space-saving guide devices.

Um die Führungsstabilität des Balkenträgers zu verbessern, lassen sich die beiden Drehlager der Schwingen gemäß einer vorteilhaften Weiterbildung der Erfindung symmetrisch zu einer Balkenmitte des Balkenträgers anordnen.In order to improve the guiding stability of the beam carrier, the two pivot bearings of the rockers can be arranged symmetrically according to an advantageous development of the invention to a beam center of the beam carrier.

Hierzu wird zur Anbindung der Anlenkstange das Drehgelenk an den Balkenträger bevorzugt an der Balkenmitte angeordnet. Die Vertikalbewegung des Balkenträgers lässt sich somit sicher und stabil auf die Anlenkstange zur Geradführung übertragen.For this purpose, the swivel joint is preferably arranged on the beam support at the middle of the beam for connecting the connecting rod. The vertical movement of the beam carrier can thus be safely and stably transmitted to the articulation rod for linear guidance.

Eine besonders hohe Flexibilität für den Einsatz der erfindungsgemäßen Vorrichtung ist durch die Weiterbildung der Erfindung gegeben, bei welcher das Drehlager der Schwinge als ein Exzenterlager am Umfang einer Exzenterwelle ausgebildet ist, die mittels einer Bewegungseinrichtung wahlweise antreibbar oder feststellbar ist. Dadurch lässt sich wahlweise ein überlagerter Horizontalhub an dem Balkenträger ausführen, so dass je nach Anforderung die Faserbahn entweder ohne Horizontalhub mit festgestellter Exzenterwelle oder mit Horizontalhub mit bewegter Exzenterwelle vernadelbar ist.A particularly high flexibility for the use of the device according to the invention is given by the development of the invention, in which the pivot bearing of the rocker is designed as an eccentric bearing on the circumference of an eccentric shaft, which can be driven or fixed by means of a movement device is. As a result, optionally a superimposed Horizontalhub run on the beam support, so that depending on the requirement, the fiber web is vernadelbar either without horizontal stroke with detected eccentric shaft or horizontal stroke with moving eccentric shaft.

Um eine qualitativ hochwertige Vernadelung der Vliesbahn zu erhalten, wird der Vertikalantrieb vorzugsweise gemäß einer Weiterbildung der Erfindung derart ausgeführt, dass zwei über separate Exzenterantriebe angetriebene Pleuelstangen mit dem Balkenträger verbunden sind. Hierzu weisen die Exzenterantriebe jeweils eine Kurbelwelle auf, die über einen Pleuelkopf mit der Pleuelstange verbunden ist. Die Pleuelstangen sind mit ihren Pleuelaugen über Drehgelenke mit dem Balkenträger verbunden. Ein derartiger Vertikalantrieb bietet eine hohe Flexibilität in Einstellung und Führung des Nadelbalkens, um unterschiedliche Faserbahnen mit unterschiedlichen Fasern produktspezifisch zu vernadeln.In order to obtain a high-quality needling of the nonwoven web, the vertical drive is preferably carried out according to a development of the invention such that two driven via separate eccentric connecting rods are connected to the beam support. For this purpose, the eccentric drives each have a crankshaft, which is connected via a connecting rod with the connecting rod. The connecting rods are connected with their connecting rod eyes via swivel joints with the beam support. Such a vertical drive offers a high degree of flexibility in setting and guiding the needle bar in order to needle-pick different fiber webs with different fibers.

Bei der Ausbildung eines derartigen Vertikalantriebes wird die Schwinge und die Koppelkinematik der Führungseinrichtung bevorzugt zwischen den Pleuelstangen des Vertikalantriebes angeordnet, um eine sehr enge Maschinenteilung zu erhalten. Alternativ besteht jedoch auch die Möglichkeit, die Schwinge und die Koppelkinematik neben den Pleuelstangen des Vertikalantriebes anzuordnen, um beispielsweise eine Seitenanordnung der Führungseinrichtung zu ermöglichen.In the formation of such a vertical drive, the rocker and the coupling kinematics of the guide device is preferably arranged between the connecting rods of the vertical drive in order to obtain a very narrow machine pitch. Alternatively, however, it is also possible to arrange the rocker and the coupling kinematics next to the connecting rods of the vertical drive, for example, to allow a side arrangement of the guide device.

Die erfindungsgemäße Vorrichtung wird zur Realisierung großer Arbeitsbreiten mit entsprechend langen Nadelbrettern vorteilhaft auch mit mehreren in einer Maschine aneinander gereihten Vertikalantrieben ausgeführt, die gemeinsam an einen Balkenträger angreifen. Dabei ist vorzugsweise jedem der Vertikalantriebe eine Geradführung zugeordnet, deren Schwingen jeweils über eine Koppelkinematik mit dem Balkenträger verbunden sind.The device according to the invention is carried out to realize large working widths with correspondingly long needle boards advantageous also with several juxtaposed in a machine vertical drives, which attack together on a beam carrier. In this case, each of the vertical drives is preferably associated with a linear guide whose wings are each connected via a coupling kinematics with the beam support.

Eine überlagerte Horizontalbewegung des Nadelbalkens lässt sich auch vorteilhaft durch die Weiterbildung der Erfindung realisieren, bei welcher der Vertikalantrieb eine Phasenverstelleinrichtung zur Phasenverstellung der beiden Kurbelwellen aufweist. In diesem Fall können die Kurbelwellen um einen Phasenwinkel versetzt angetrieben werden, so dass der Balkenträger eine Kippbewegung ausführt, die durch den vertikalen Abstand an den Nadeln neben der Vertikalbewegung auch zu einer Horizontalbewegung führt. Diese Weiterbildung ist insbesondere vorteilhaft, um kleine, stufenlos, einstellbare Horizontalhübe an dem Nadelbalken auszuführen.A superimposed horizontal movement of the needle bar can also be advantageously realized by the development of the invention, in which the vertical drive has a phase adjustment for phase adjustment of the two crankshafts. In this case, the crankshafts can be driven offset by a phase angle, so that the beam carrier executes a tilting movement, which also leads to a horizontal movement by the vertical distance at the needles in addition to the vertical movement. This development is particularly advantageous for carrying out small, continuously variable, adjustable horizontal strokes on the needle bar.

Zur weiteren Erläuterung der Erfindung werden nachfolgend einige Ausführungsbeispiele unter Hinweis auf die beigefügten Figuren beschrieben.To further explain the invention, some embodiments are described below with reference to the accompanying figures.

Es stellen dar:

Fig. 1
schematisch eine Seitenansicht eines ersten Ausführungsbeispiels der erfindungsgemäßen Vorrichtung
Fig. 2
schematisch eine Seitenansicht eines weiteren Ausführungsbeispiels der erfindungsgemäßen Vorrichtung
Fig. 3
schematisch eine Seitenansicht eines weiteren Ausführungsbeispiels der erfindungsgemäßen Vorrichtung
Fig. 4
schematisch eine Seitenansicht eines weiteren Ausführungsbeispiels der erfindungsgemäßen Vorrichtung
Fig. 5
schematisch eine Seitenansicht eines weiteren Ausführungsbeispiels der erfindungsgemäßen Vorrichtung
They show:
Fig. 1
schematically a side view of a first embodiment of the device according to the invention
Fig. 2
schematically a side view of another embodiment of the device according to the invention
Fig. 3
schematically a side view of another embodiment of the device according to the invention
Fig. 4
schematically a side view of another embodiment of the device according to the invention
Fig. 5
schematically a side view of another embodiment of the device according to the invention

In Fig. 1 ist ein erstes Ausführungsbeispiel der erfindungsgemäßen Vorrichtung zum Vernadeln einer Faserbahn dargestellt. Das Ausführungsbeispiel der erfindungsgemäßen Vorrichtung nach Fig. 1 zeigt einen Balkenträger 2, der an seiner Unterseite einen Nadelbalken 1 hält. Der Nadelbalken 1 trägt an seiner Unterseite ein Nadelbrett 3 mit einer Vielzahl von Nadeln 4. Dem Nadelbrett 3 mit den Nadeln 4 ist eine Bettplatte 29 und ein Abstreifer 28 zugeordnet, wobei zwischen der Bettplatte 29 und dem Abstreifer 28 eine Faserbahn 30 mit im wesentlichen konstanter Vorschubsgeschwindigkeit geführt wird. Die Bewegungsrichtung der Faserbahn 30 ist hierbei durch einen Pfeil gekennzeichnet.In Fig. 1 a first embodiment of the device according to the invention for needling a fiber web is shown. The embodiment of the device according to the invention Fig. 1 shows a beam support 2, which holds a needle bar 1 on its underside. The needle bar 1 carries on its underside a needle board 3 with a plurality of needles 4. The needle board 3 with the needles 4 is associated with a bed plate 29 and a scraper 28, wherein between the bed plate 29 and the scraper 28, a fibrous web 30 with substantially constant Feed rate is performed. The direction of movement of the fiber web 30 is characterized by an arrow.

An dem Balkenträger 2 greift ein Vertikalantrieb 5 an. Durch den Vertikalantrieb 5 wird der Balkenträger 2 in vertikaler Richtung oszillierend bewegt, so dass der Nadelbalken 1 mit dem Nadelbrett 3 eine Auf- und Abwärtsbewegung ausführt. Der Vertikalantrieb 5 ist in diesem Ausführungsbeispiel durch zwei parallel angeordnete Exzenterantriebe 6.1 und 6.2 gebildet. Die Exzenterantriebe 6.1 und 6.2 weisen zwei parallel nebeneinander angeordnete Kurbelwellen 9.1 und 9.2 auf, die oberhalb des Balkenträgers 2 angeordnet sind. Die Kurbelwellen 9.1 und 9.2 weisen jeweils mindestens einen Exzenterabschnitt zur Aufnahme mindestens einer Pleuelstange auf. In Fig. 1 sind die an einem Balkenträger 2 angeordneten Pleuelstangen 7.1 und 7.2 gezeigt, die mit ihren Pleuelköpfen 10.1 und 10.2 an den Kurbelwellen 9.1 und 9.2 gehalten sind. Die Pleuelstangen 7.1 und 7.2 sind mit ihren gegenüberliegenden Pleuelaugen 11.1 und 11.2 durch zwei Pleueldrehgelenke 8.1 und 8.2 mit dem Balkenträger 2 verbunden. Die Kurbelwelle 9.1 bildet mit der Pleuelstange 7.1 und die Kurbelwelle 9.2 mit der Pleuelstange 7.2 jeweils einen der Exzenterantriebe 6.1 und 6.2, um den Balkenträger 2 in einer Auf- und Abwärtsbewegung zu führen. Die Kurbelwellen 9.1 und 9.2 werden gleich- oder gegensinnig synchron angetrieben, so dass der Balkenträger 2 zumindest annähernd parallel geführt ist.On the beam support 2 engages a vertical drive 5. By the vertical drive 5, the beam support 2 is oscillated in the vertical direction, so that the needle bar 1 with the needle board 3 performs an up and down movement. The vertical drive 5 is formed in this embodiment by two parallel eccentric 6.1 and 6.2. The eccentric 6.1 and 6.2 have two parallel juxtaposed crankshafts 9.1 and 9.2, which are arranged above the beam carrier 2. The crankshafts 9.1 and 9.2 each have at least one eccentric section for receiving at least one connecting rod. In Fig. 1 are arranged on a beam support 2 connecting rods 7.1 and 7.2, which are held with their connecting rods 10.1 and 10.2 to the crankshaft 9.1 and 9.2. The connecting rods 7.1 and 7.2 are connected with their opposite connecting rod eyes 11.1 and 11.2 by two pivot hinges 8.1 and 8.2 with the beam support 2. The crankshaft 9.1 forms with the connecting rod 7.1 and the crankshaft 9.2 with the connecting rod 7.2 each one of the eccentric 6.1 and 6.2 to guide the beam support 2 in an up and down movement. The crankshafts 9.1 and 9.2 are driven synchronously or in opposite directions synchronously, so that the beam support 2 is guided at least approximately parallel.

Zur Führung der Vertikalbewegung des Balkenträgers 2 ist eine Führungseinrichtung 12 vorgesehen, die in diesem Ausführungsbeispiel eine Schwinge 13 aufweist, die über ein Drehlager 14 mit einem Maschinengestell 15 verbunden ist. Das freie Ende der Schwinge 13 ist über eine Koppelkinematik 16 mit dem Balkenträger 2 verbunden. Die Koppelkinematik 16 ist in diesem Ausführungsbeispiel durch eine Anlenkstange 17 und eine zweite Schwinge 22 gebildet. Die zweite Schwinge 22 ist im Abstand zu der ersten Schwinge 13 durch ein zweites Drehlager 23 mit dem Maschinengestell 15 drehbar gehalten. Das freie End der ersten Schwinge 13 und das freie Ende der zweiten Schwinge 22 sind im Abstand zueinander jeweils über ein Drehgelenk 24.1 und 24.2 mit der Anlenkstange 17 gekoppelt. Die Drehgelenke 24.1 und 24.2 sind an einem Endabschnitt der Anlenkstange 17 ausgebildet. Mit dem gegenüberliegenden Endabschnitt ist die Anlenkstange 17 durch ein Drehgelenk 20 mit dem Balkenträger 2 verbunden. Das Drehgelenk 20 ist in der Balkenmitte des Balkenträgers 2 ausgebildet.To guide the vertical movement of the beam support 2, a guide device 12 is provided, which in this embodiment has a rocker 13 which is connected via a pivot bearing 14 with a machine frame 15. The free end of the rocker 13 is connected via a coupling kinematics 16 with the beam support 2. The coupling kinematics 16 is formed in this embodiment by a Anlenkstange 17 and a second rocker 22. The second rocker 22 is rotatably supported at a distance from the first rocker 13 by a second pivot bearing 23 with the machine frame 15. The free end of the first rocker 13 and the free end of the second rocker 22 are at a distance each coupled via a hinge 24.1 and 24.2 with the articulation rod 17. The hinges 24.1 and 24.2 are formed on an end portion of the articulation rod 17. With the opposite end portion of the connecting rod 17 is connected by a hinge 20 to the beam support 2. The swivel joint 20 is formed in the middle of the beam of the beam support 2.

Die Schwinge 13 und die Glieder der Koppelkinematik 16 sind oberhalb des Balkenträgers 2 angeordnet. Hierzu sind die Drehlager 14 und 23 an dem Maschinengestell 15 zwischen den Pleuelstangen 7.1 und 7.2 des Vertikalantriebes 5 angeordnet. Dadurch ergibt sich eine sehr kompakte und schmale Bauweise. Der Vertikalantrieb 5 und die Führungseinrichtung 12 bilden somit eine kompakte Baueinheit oberhalb des Balkenträgers 2.The rocker 13 and the links of the coupling kinematics 16 are arranged above the beam carrier 2. For this purpose, the pivot bearing 14 and 23 are arranged on the machine frame 15 between the connecting rods 7.1 and 7.2 of the vertical drive 5. This results in a very compact and narrow design. The vertical drive 5 and the guide device 12 thus form a compact unit above the beam support 2.

Die Position der Drehlager 14 und 23 sowie die Längen der ersten Schwinge 13 und der zweiten Schwinge 22 sind derart gewählt, dass die Anlenkstange 17 am Anlenkpunkt des Balkenträgers 2, der durch das Drehgelenk 20 bestimmt ist, eine gerade Führung des Balkenträgers 2 in vertikaler Richtung über den gesamten Hub des Vertikalantriebes 5 ausführt. Die Geradführung des Balkenträgers 2 wird vorteilhaft gegenüber dem Maschinengestell 15 ausschließlich durch Drehbewegungen der Teile der Führungseinrichtungen 12 realisiert. Die Drehlager 14 und 23 sowie die Drehgelenke 24.1, 24.2 und 20 lassen sich reibungsarm ausführen, so dass eine insgesamt reibungsarme Geradführung des Balkenträgers 2 vorliegt, die keine zusätzlichen Drehmomente durch den Vertikalantrieb 5 erfordern. Der Einsatz der Drehlager 14 und 23 und Drehgelenke 20, 24.1, 24.2 besitzen zudem den Vorteil, dass handelsübliche Schmiersysteme einsetzbar sind, die gegenüber der Umgebung einer Abdichtung aufweisen, so dass keine Schmiermittelreste in die Umgebung gelangen könnten.The position of the pivot bearing 14 and 23 and the lengths of the first rocker 13 and the second rocker 22 are chosen such that the articulation rod 17 at the articulation point of the beam support 2, which is determined by the pivot 20, a straight guide of the beam support 2 in the vertical direction over the entire stroke of the vertical drive 5 executes. The straight guide of the beam support 2 is advantageously realized relative to the machine frame 15 exclusively by rotational movements of the parts of the guide means 12. The pivot bearing 14 and 23 and the pivot joints 24.1, 24.2 and 20 can be performed with low friction, so that a total of low-friction linear guide of the beam support 2 is present, which require no additional torque through the vertical drive 5. The use of the pivot bearing 14 and 23 and hinges 20, 24.1, 24.2 also have the advantage that commercial lubrication systems are used, which have a seal against the environment, so that no lubricant residues could get into the environment.

Im Betrieb werden die Kurbelwellen 9.1 und 9.2 des Vertikalantriebes 5 vorzugsweise mit entgegengesetztem Drehsinn und gleichen Drehzahlen angetrieben. Durch die Pleuelstangen 7.1 und 7.2 wird die Bewegung der Kurbelwellen 9.1 und 9.2 auf den Balkenträger 2 übertragen, der eine Auf- und Abwärtsbewegung ausführt. Die vertikale Bewegung des Balkenträgers 2 wird über die Anlenkstange 17 der Führungseinrichtung 12 aufgenommen und auf die Schwingen 13 und 22 übertragen. Die an den Drehlagern 14 und 23 fixierten Schwingen 13 und 22 führen eine Drehbewegung aus. Die Kinematik der Schwinge 13, der Schwinge 22 und der Anlenkstange 17 ist derart gewählt, dass das freie Ende der Anlenkstange 17 mit dem Drehgelenk 20 sich auf einer Vertikalen bewegt. Damit wird der Balkenträger 2 auf einer geraden Führungsbahn während des gesamten Hubes des Vertikalantriebes 5 gehalten.In operation, the crankshaft 9.1 and 9.2 of the vertical drive 5 are preferably driven in opposite directions of rotation and the same speeds. By the connecting rods 7.1 and 7.2, the movement of the crankshaft 9.1 and 9.2 transmitted to the beam support 2, which performs an up and down movement. The vertical movement of the beam support 2 is received via the connecting rod 17 of the guide device 12 and transmitted to the rockers 13 and 22. The fixed to the pivot bearings 14 and 23 rockers 13 and 22 perform a rotational movement. The kinematics of the rocker 13, the rocker 22 and the link rod 17 is selected such that the free end of the link rod 17 moves with the hinge 20 on a vertical. Thus, the beam support 2 is held on a straight guideway during the entire stroke of the vertical drive 5.

Bei dem Ausführungsbeispiel nach Fig. 1 sind die Glieder der Koppelkinematik 16 zur Anbindung der Schwinge 13 an dem Balkenträger 2 beispielhaft als Anlenkstange und einer zweiten Schwinge ausgebildet. Grundsätzlich lassen sich die Glieder der Koppelkinematik 16 durch andere Hebelgeometrien realisieren.According to the embodiment Fig. 1 For example, the links of the coupling kinematics 16 for connecting the rocker 13 to the beam support 2 are designed as an articulation rod and a second rocker. In principle, the links of the coupling kinematics 16 can be realized by other lever geometries.

Das in Fig. 2 dargestellte Ausführungsbeispiel der erfindungsgemäßen Vorrichtung stellt nur eine weitere Möglichkeit dar, um die über ein Drehlager am Maschinengestell fixierte Schwinge über eine Koppelkinematik mit dem Balkenträger zur Geradführung des Balkenträgers zu verbinden.This in Fig. 2 illustrated embodiment of the device according to the invention represents only one more way to connect the fixed via a pivot bearing on the machine frame rocker via a coupling kinematics with the beam support for straight guidance of the beam support.

Das Ausführungsbeispiel nach Fig. 2 ist im Aufbau und Ausgestaltung des Vertikalantriebes 5, des Balkenträgers 2 sowie der durch den Balkenträger 2 gehaltenen Einrichtungen identisch zu dem vorgenannten Ausführungsbeispiel, so dass zu der vorhergehenden Beschreibung Bezug genommen wird. Gegenüber dem Ausführungsbeispiel nach Fig. 1 ist bei dem Ausführungsbeispiel nach Fig. 2 die Führungseinrichtung 12 im Wesentlichen seitlich neben den Pleuelstangen 7.1 und 7.2 angeordnet. Die Führungseinrichtung 12 weist hierzu eine Schwinge 13 auf, die an einem Drehlager 14 gegenüber einem Maschinengestell 15 fixiert ist. Die Schwinge 13 ist drehbar in dem Drehlager 14 gehalten.The embodiment according to Fig. 2 is identical in construction and configuration of the vertical drive 5, the beam support 2 as well as the held by the beam support 2 devices to the aforementioned embodiment, so that reference is made to the preceding description. According to the embodiment according to Fig. 1 is in the embodiment after Fig. 2 the guide device 12 is arranged substantially laterally next to the connecting rods 7.1 and 7.2. The guide device 12 has for this purpose a rocker 13 which is fixed to a pivot bearing 14 relative to a machine frame 15. The rocker 13 is rotatably supported in the pivot bearing 14.

Zur Anbindung der Schwinge 13 an dem Balkenträger 2 ist die Koppelkinematik 16 durch einen Kipphebel 18 und eine Anlenkstange 17 gebildet. Der Kipphebel 18 ist seitlich oberhalb des Balkenträgers 2 an einem Drehlager 19 im Maschinengestell 15 gehalten. Der Kipphebel 18 ist gelenkig an dem Drehlager 19 fixiert, so dass ein freies oberes Ende und ein freies unteres Ende relativ zu dem Drehlager 19 verschwenkbar sind. Das obere freie Ende des Kipphebels 18 ist über ein Drehgelenk 21.2 mit dem freien Ende der Schwinge 13 gelenkig verbunden. Das untere Ende des Kippehebels 18 ist über das Drehgelenk 21.1 gelenkig mit der Anlenkstange 17 gekoppelt. Die Anlenkstange 17 ragt mit einem freien Ende bis zur Mitte des Balkenträgers 2 und ist dort über das Drehgelenk 20 gelenkig mit dem Balkenträger 2 verbunden.To connect the rocker 13 to the beam support 2, the coupling kinematics 16 is formed by a rocker arm 18 and a link rod 17. The rocker arm 18 is held laterally above the beam support 2 at a pivot bearing 19 in the machine frame 15. The rocker arm 18 is pivotally fixed to the pivot bearing 19, so that a free upper end and a free lower end are pivotable relative to the pivot bearing 19. The upper free end of the rocker arm 18 is pivotally connected via a rotary joint 21.2 with the free end of the rocker 13. The lower end of the tilt lever 18 is pivotally coupled to the articulation rod 17 via the pivot 21.1. The connecting rod 17 protrudes with a free end to the middle of the beam support 2 and is there articulated via the rotary joint 20 to the beam support 2.

Die vertikale Bewegung des Balkenträgers 2, der durch den Vertikalantrieb 5 angetrieben ist, wird über die Anlenkstange 17 in eine durch die Kinematik der Führungseinrichtung 12 bestimmte Führungsbahn gehalten. Je nach Länge der Anlenkstange 17 lässt sich der Balkenträger 2 auf eine annähernden geraden Führungsbahn führen. Auch hierbei wird die translatorische Bewegung des Balkenträgers 2 allein durch Drehbewegungen der Teile der Führungseinrichtung 15 geführt.The vertical movement of the beam support 2, which is driven by the vertical drive 5, is held via the connecting rod 17 in a certain by the kinematics of the guide means 12 guideway. Depending on the length of the connecting rod 17, the beam support 2 can lead to an approximate straight guideway. Again, the translational movement of the beam support 2 is guided solely by rotational movements of the parts of the guide means 15.

Das in Fig. 2 dargestellt Ausführungsbeispiel der erfindungsgemäßen Vorrichtung ist besonders geeignet, um den Balkenträger wahlweise überlagert mit einem Horizontalhub anzutreiben. Hierzu wird das Drehlager 14 der Schwinge 13 durch ein Exzenterlager und eine Exzenterwelle ersetzt, die über eine Bewegungseinrichtung zur Einleitung eines Horizontalhubes an der Schwinge 13 angetrieben wird. Damit lässt sich die Geradführung zur Übertragung eines Horizontalhubes nutzen. Für den Fall, dass der Balkenträger nur mit einer oszillierenden Vertikalbewegung angetrieben werden soll, wird die Exzenterwelle festgestellt, so dass das Exzenterlager ausschließlich als Drehlager der Schwinge wirkt. An der Schwinge wird somit keine Horizontalbewegung mehr eingeleitet.This in Fig. 2 illustrated embodiment of the device according to the invention is particularly suitable to selectively drive the beam support superimposed with a horizontal stroke. For this purpose, the pivot bearing 14 of the rocker 13 is replaced by an eccentric bearing and an eccentric shaft, which is driven via a movement device for initiating a horizontal stroke on the rocker 13. This makes it possible to use the linear guide for the transmission of a horizontal stroke. In the event that the beam carrier is to be driven only with an oscillating vertical movement, the eccentric shaft is detected, so that the eccentric acts exclusively as a pivot bearing of the rocker. Thus no horizontal movement is initiated at the rocker.

In Fig. 3 ist ein weiteres Ausführungsbeispiel der erfindungsgemäßen Vorrichtung schematisch in einer Seitenansicht dargestellt. Das Ausführungsbeispiel nach Fig. 3 ist im Wesentlichen identisch zu dem Ausführungsbeispiel nach Fig. 1, so dass an dieser Stelle nur die Unterschiede erläutert werden und ansonsten Bezug zu der vorgenannten Beschreibung genommen wird.In Fig. 3 is a further embodiment of the device according to the invention shown schematically in a side view. The embodiment according to Fig. 3 is essentially identical to the embodiment according to Fig. 1 , so that at this point only the differences will be explained and otherwise reference is made to the above description.

Bei dem in Fig. 3 dargestellten Ausführungsbeispiel sind an dem Balkenträger 2 jeweils zwei Nadelbalken 1.1 und 1.2 gehalten, die jeweils an ihren Unterseiten ein Nadelbrett 3 und eine Mehrzahl von Nadeln 4 tragen. Der Balkenträger 2 ist mit einem Vertikalantrieb 5 gekoppelt, der identisch zu dem vorgenannten Ausführungsbeispiel ausgebildet ist. Zur Geradführung des Balkenträgers 2 ist eine Führungseinrichtung 12 vorgesehen, die aus einer ersten Schwinge 13 und einer zweiten Schwinge 22 besteht. Die erste Schwinge 13 ist über das Drehlager 14 an dem Maschinengestellt 15 fixiert. Das Drehlager 14 ist hierzu seitlich neben dem Balkenträger 2 angeordnet. Die zweite Schwinge 22 ist an einem Drehlager 23 gehalten, das auf der gegenüberliegenden Seite des Balkenträgers 2 an dem Maschinengestell 15 angeordnet ist. Die erste Schwinge 13 sowie die zweite Schwinge 22 ragen gegenüberliegend jeweils zur Balkenmitte des Balkenträgers 2. Im mittleren Bereich des Balkenträgers 2 ist eine Anlenkstange 17 vorgesehen, die im mittleren Bereich über ein Drehgelenk 20 mit dem Balkenträger 2 verbunden ist. Die freien Enden der Anlenkstange 17 sind über die Drehgelenke 24.1 und 24.2 mit der ersten Schwinge 13 und mit der zweiten Schwinge 22 gekoppelt.At the in Fig. 3 illustrated embodiment, two needle bars 1.1 and 1.2 are held on the beam support 2, each carrying a needle board 3 and a plurality of needles 4 on their undersides. The beam carrier 2 is coupled to a vertical drive 5, which is identical to the aforementioned embodiment. For straight guidance of the beam support 2, a guide device 12 is provided which consists of a first rocker 13 and a second rocker 22. The first rocker 13 is fixed via the pivot bearing 14 on the machine position 15. The pivot bearing 14 is for this purpose arranged laterally next to the beam support 2. The second rocker 22 is held on a pivot bearing 23 which is arranged on the opposite side of the beam support 2 on the machine frame 15. The first rocker 13 and the second rocker 22 protrude opposite to the beam center of the beam support 2. In the central region of the beam support 2, a link rod 17 is provided, which is connected in the central region via a rotary joint 20 with the beam support 2. The free ends of the connecting rod 17 are coupled via the swivel joints 24.1 and 24.2 with the first rocker 13 and with the second rocker 22.

Bei der in Fig. 3 dargestellten Führungseinrichtung 12 weisen die Schwingen 13 und 22 eine gleiche Länge auf. Um an dem Anlenkpunkt der Anlenkstange 17 gegenüber dem Balkenträger 2 eine resultierende Führungsbahn durch die Drehbewegungen der Schwinge 13 und 22 zu erhalten, sind die Schwingen 13 und 22 in unterschiedlichen Winkellagen relativ zum Balkenträger 2 angeordnet. Somit lässt sich eine an dem Anlenkpunkt der Anlenkstange 17, der durch das Drehgelenk 20 bestimmt ist, eine annähernd gerade Führungsbahn während der Vertikalbewegung des Balkenträgers 2 erzeugen.At the in Fig. 3 Guide device 12 shown, the rockers 13 and 22 have an equal length. In order to obtain a resultant guideway through the rotational movements of the rocker 13 and 22 at the articulation point of the connecting rod 17 relative to the beam support 2, the rockers 13 and 22 are arranged in different angular positions relative to the beam support 2. Thus, one at the articulation point of the articulation rod 17, which is determined by the rotary joint 20, produce an approximately straight guideway during the vertical movement of the beam carrier 2.

Durch die symmetrische Anordnung der Führungseinrichtung 12 sowie der beidseitigen Anlenkung an dem Maschinengestell 15 durch die Drehlager 14 und 23 wird eine sehr stabile Führung des Balkenträgers 2 erreicht.Due to the symmetrical arrangement of the guide device 12 and the two-sided articulation on the machine frame 15 through the pivot bearing 14 and 23, a very stable guidance of the beam support 2 is achieved.

Die vorgenannten Ausführungsbeispiele der erfindungsgemäßen Vorrichtungen sind zum Vernadeln einer Faserbahn geeignet, bei welcher die Nadeln in einer vertikalen Auf- und Abwärtsbewegung geführt werden. Die Geradführung des Balkenträgers bewirkt dabei, dass die Nadeln eine möglichst exakte Vertikalbewegung ausführen.The aforementioned embodiments of the devices according to the invention are suitable for needling a fibrous web, in which the needles are guided in a vertical up and down movement. The straight guide of the beam support causes the needles perform a vertical movement as exact as possible.

Für den Fall, dass die Nadeln zum Vernadeln der Faserbahn neben der reinen Vertikalbewegung eine überlagerte Horizontalbewegung ausführen müssen, lässt sich die Führungseinrichtung 12 vorteilhaft derart erweitern, das wahlweise der Balkenträger 2 neben der Auf- und Abwärtsbewegung eine Hin- und Herbewegung ausführt. In Fig. 4 ist ein Ausführungsbeispiel der erfindungsgemäßen Vorrichtung schematisch in einer Seitenansicht dargestellt. Das Ausführungsbeispiel ist identisch zu dem Ausführungsbeispiel nach Fig. 1, so dass zu der vorgenannten Beschreibung Bezug genommen wird und nachfolgend nur die Unterschiede erläutert werden.In the event that the needles for needling the fiber web in addition to the pure vertical movement must perform a superimposed horizontal movement, the guide means 12 can advantageously extend such that either the beam support 2 in addition to the up and down movement performs a reciprocating motion. In Fig. 4 an embodiment of the device according to the invention is shown schematically in a side view. The embodiment is identical to the embodiment according to Fig. 1 so that reference is made to the above description and only the differences will be explained below.

Gegenüber dem Ausführungsbeispiel nach Fig. 1 ist bei dem Ausführungsbeispiel nach Fig. 4 innerhalb der Führungseinrichtung 12 das Drehlager der zweiten Schwinge 22 durch ein Exzenterlager 25 ersetzt. Das Exzenterlager 25 ist an einer Exzenterwelle 26 ausgebildet, die bei Rotation die Schwinge 22 antreibt. Die Exzenterwelle 26 ist mit einer Bewegungseinrichtung 27 gekoppelt, durch welche die Exzenterwelle 26 wahlweise in ihrer Lage festgehalten oder angetrieben werden kann.According to the embodiment according to Fig. 1 is in the embodiment after Fig. 4 within the guide device 12, the pivot bearing of the second rocker 22 is replaced by an eccentric 25. The eccentric bearing 25 is formed on an eccentric shaft 26 which drives the rocker 22 during rotation. The eccentric shaft 26 is coupled to a movement device 27, by means of which the eccentric shaft 26 can either be held or driven in its position.

Bei feststehender Exzenterwelle 26 ist die Schwinge 22 durch das Exzenterlager 25 fixiert und lässt sich nur in einer Drehbewegung um das Exzenterlager 25 herum führen. In dieser Situation wirkt die Anlenkstange 17 gegenüber dem Balkenträger 2 ausschließlich zur Führung der Vertikalbewegung des Balkenträgers. Das freie Ende der Anlenkstange 17 wird im Drehgelenk 20 hierzu bevorzugt auf einer Vertikalen geführt, so dass der Balkenträger 2 eine gerade Führung während des Vertikalhubes erhält.With a fixed eccentric shaft 26, the rocker 22 is fixed by the eccentric 25 and can only around the eccentric 25 in a rotary motion around to lead. In this situation, the connecting rod 17 acts relative to the beam support 2 exclusively for guiding the vertical movement of the beam support. The free end of the articulation rod 17 is guided in the pivot 20 for this purpose preferably on a vertical, so that the beam support 2 receives a straight guide during the Vertikalhubes.

Für den Fall, dass die Bewegungseinrichtung 27 die Exzenterwelle 26 antreibt, wird der Balkenträger 2 in einem konstanten Horizontalhub überlagert zu der Vertikalbewegung angetrieben. Die Anlenkstange 17 wirkt als Schubstange und führt den Balkenträger 2 über das Drehgelenk 20 in eine überlagert horizontale Bewegung. Der Balkenträger 2 und damit der Nadelbalken 11 führen eine elliptische Bewegung aus. Die Drehzahl der Exzenterwelle 26 sowie die Drehzahl der Kurbelwellen 9.1 und 9.2 des Vertikalantriebes 5 sind in diesem Fall gleich, so dass sich ein von der Exzentrizität der Exzenterwelle 26 abhängiger horizontaler Hub an dem Nadelbalken 1 einstellt.In the event that the movement means 27 drives the eccentric shaft 26, the beam support 2 is driven in a constant horizontal stroke superimposed on the vertical movement. The articulation rod 17 acts as a push rod and guides the beam support 2 via the rotary joint 20 in a superimposed horizontal movement. The beam support 2 and thus the needle bar 11 perform an elliptical movement. The speed of the eccentric shaft 26 and the rotational speed of the crankshaft 9.1 and 9.2 of the vertical drive 5 are the same in this case, so that adjusts a dependent of the eccentricity of the eccentric shaft 26 horizontal stroke on the needle bar 1.

Bei dem in Fig. 4 dargestellten Ausführungsbeispiel könnte zur Realisierung einer überlagerten Horizontalbewegung an dem Balkenträger 2 alternativ auch das Drehlager 14 der Schwinge 13 durch ein Exzenterlager an einer Exzenterwelle ausgebildet sein, so dass bei Antrieb der Exzenterwelle über die Schwinge 13 eine horizontale Bewegungskomponente eingeleitet wird. Die zweite Schwinge 22 wäre an einem Drehlager am Maschinengestell geführt. Es wäre jedoch auch möglich, dass beide Schwingen an Exzenterwellen gehalten sind, wobei die Exzenterwellen durch eine Bewegungseinrichtung wahlweise antreibbar oder fixierbar wären.At the in Fig. 4 For the realization of a superimposed horizontal movement on the beam support 2, the rotary bearing 14 of the rocker 13 could alternatively be formed by an eccentric bearing on an eccentric shaft, so that when the eccentric shaft is driven via the rocker 13, a horizontal movement component is introduced. The second rocker 22 would be guided on a pivot bearing on the machine frame. However, it would also be possible for both rockers to be held on eccentric shafts, with the eccentric shafts being selectively drivable or fixable by means of a movement device.

Die erfindungsgemäße Vorrichtung zum Vernadeln einer Faserbahn bietet somit eine hohe Flexibilität zur Führung und zum Antrieb eines Nadelbalkens. Insbesondere lassen sich reine vertikale Vernadelungen zur Herstellung hochwertiger Faserprodukte mit gleichmäßiger Faserstruktur realisieren.The device according to the invention for needling a fibrous web thus offers a high degree of flexibility for guiding and for driving a needle bar. In particular, pure vertical needling can be realized for the production of high-quality fiber products having a uniform fiber structure.

In Fig. 5 ist ein weiteres Ausführungsbeispiel der erfindungsgemäßen Vorrichtung schematisch in einer Seitenansicht dargestellt. Das Ausführungsbeispiel nach Fig. 5 ist mit Ausnahme des Vertikalantriebs 5 identisch zu dem Ausführungsbeispiel nach Fig. 1 ausgeführt, so dass an dieser Stelle nur die Unterschiede der Vertikalantriebe erläutert werden und ansonsten Bezug zu der vorgenannten Beschreibung genommen wird.In Fig. 5 is a further embodiment of the device according to the invention shown schematically in a side view. The embodiment according to Fig. 5 is identical to the embodiment with the exception of the vertical drive 5 Fig. 1 executed, so that at this point only the differences of the vertical drives will be explained and otherwise reference is made to the above description.

Bei dem in Fig. 5 dargestellten Ausführungsbeispiel ist dem Vertikalantrieb 5 eine Phasenverstelleinrichtung 31 zugeordnet. Die Phasenverstelleinrichtung 31 weist zwei Stellmotoren 33.1 und 33.2 auf, die den Kurbelwellen 9.1 und 9.2 zugeordnet sind. Die Stellmotoren 33.1 und 33.2 sind mit einer Steuereinrichtung 32 verbunden. Über die Steuereinrichtung 32 lassen sich die Stellmotoren 33.1 und 33.2 unabhängig voneinander aktivieren, um die Kurbelwellen 9.1 und 9.2 in ihren Lagern zu verdrehen. Somit lässt sich eine Phasenlage zwischen den Kurbelwellen 9.1 und 9.2 beliebig einstellen. Neben der reinen vertikalen Auf- und Abwärtsbewegung des Nadelbalkens 1 lässt sich dadurch eine überlagerte Horizontalbewegung an dem Balkenträger 2 ausführen. So wird bei Phasengleichheit der Kurbelwellen 9.1 und 9.2 sowie einem synchronen Antrieb beider Kurbelwellen eine annähernd vertikale Auf- und Abwärtsbewegung ausgeführt. Bei einem Versatz der Phasenlagen der Kurbelwellen 9.1 und 9.2 wird über die Pleuelstangen 7.1 und 7.2 an dem Balkenträger 2 eine Schiefstellung eingeleitet, die bei fortschreitender Bewegung eine in Bewegungsrichtung der Faserbahn 30 gerichtete Bewegungskomponente erzeugt. Die Größe der Phasenverstellung zwischen der Kurbelwelle 9.1 und 9.2 ist direkt proportional zu einer Hublänge der Horizontalbewegung. Der Hub der Horizontalbewegung lässt sich also über den Phasendifferenzwinkel der Kurbelwellen 9.1 und 9.2 stufenlos einstellen.At the in Fig. 5 illustrated embodiment, the vertical drive 5 is associated with a phase adjustment 31. The phase adjustment device 31 has two servomotors 33.1 and 33.2, which are assigned to the crankshafts 9.1 and 9.2. The servomotors 33.1 and 33.2 are connected to a control device 32. Via the control device 32, the servomotors 33.1 and 33.2 can be activated independently of one another in order to rotate the crankshafts 9.1 and 9.2 in their bearings. Thus, a phase angle between the crankshafts 9.1 and 9.2 can be set arbitrarily. In addition to the pure vertical upward and downward movement of the needle bar 1 can thereby perform a superimposed horizontal movement of the beam support 2. Thus, with phase coincidence of the crankshafts 9.1 and 9.2 and a synchronous drive of both crankshafts, an approximately vertical upward and downward movement is carried out. With an offset of the phase positions of the crankshafts 9.1 and 9.2, a skewed position is introduced via the connecting rods 7.1 and 7.2 on the beam support 2, which generates a movement component directed toward the direction of movement of the fiber web 30 as the movement progresses. The magnitude of the phase adjustment between the crankshaft 9.1 and 9.2 is directly proportional to a stroke length of the horizontal movement. The stroke of the horizontal movement can thus be adjusted continuously via the phase difference angle of the crankshafts 9.1 and 9.2.

Die Phasenverstelleinrichtung 31 könnte alternativ auch durch einen Stellmotor und eine auf die Kurbelwellen 9.1 und 9.2 einwirkendes Verstellgetriebe gebildet sein. Wesentlich hierbei ist, dass die Kurbelwellen 9.1 und 9.2 um einen Phasenwinkel versetzt zueinander angetrieben sind, um neben der Vertikalbewegung auch eine Horizontalbewegung zum Vernadeln der Faserbahn ausführen zu können.The phase adjustment device 31 could alternatively also be formed by a servomotor and an adjusting mechanism acting on the crankshafts 9.1 and 9.2. It is essential here that the crankshafts 9.1 and 9.2 are driven offset from one another by a phase angle, in order in addition to the vertical movement Also to be able to perform a horizontal movement for needling the fiber web.

Die Führung der Bewegung des Balkenträgers erfolgt auch in diesem Fall durch die Führungseinrichtung 12, die wie in dem Ausführungsbeispiel nach Fig. 1 durch die Schwinge 13 und die aus einer Anlenkstange 17 und der zweiten Schwinge 22 gebildeten Koppelkinematik 16 erfolgt.The leadership of the movement of the beam support is also in this case by the guide means 12, as in the embodiment according to Fig. 1 is effected by the rocker 13 and the coupling kinematics 16 formed by a link rod 17 and the second rocker 22.

Die in den Figuren 1 bis 4 dargestellten Ausführungsbeispiele der erfindungsgemäßen Vorrichtung zum Vernadeln einer Faserbahn sind in der Ausgestaltung und in dem Aufbau der Führungseinrichtung zur Geradführung des Balkenträgers beispielhaft. Grundsätzlich kann die Koppelkinematik auch mehr als zwei Glieder aufweisen, um die Schwinge mit dem Balkenträger zu koppeln. Ebenso können an einem Balkenträger mehrere Vertikalantriebe gleichzeitig angreifen. Hierbei kann jedem der Vertikalantriebe oder einer Gruppe von Vertikalantrieben eine von mehreren Geradführungen zugeordnet sein.The in the FIGS. 1 to 4 illustrated embodiments of the device according to the invention for needling a fiber web are exemplary in the embodiment and in the structure of the guide device for straight guidance of the beam support. In principle, the coupling kinematics can also have more than two links in order to couple the rocker to the beam support. Likewise, several vertical drives can simultaneously act on a beam carrier. In this case, each of the vertical drives or a group of vertical drives can be assigned one of several linear guides.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1.1, 1.21.1, 1.2
Nadelbalkenneedle beam
22
Balkenträgerbeam support
33
Nadelbrettneedle board
44
Nadelneedle
55
Vertikalantriebvertical drive
6.1, 6.26.1, 6.2
Exzenterantriebeccentric
7.1, 7.27.1, 7.2
Pleuelstangenconnecting rods
8.1, 8.28.1, 8.2
PleueldrehgelenkPleueldrehgelenk
9.1, 9.29.1, 9.2
Kurbelwellecrankshaft
10.1, 10.210.1, 10.2
Pleuelkopfsmall end
11.1, 11.211.1, 11.2
Pleuelaugeconnecting rod
1212
Führungseinrichtungguide means
1313
Erste SchwingeFirst swingarm
1414
Drehlager (erste Schwinge)Swivel bearing (first swingarm)
1515
Maschinengestellmachine frame
1616
Koppelkinematikcoupling kinematics
1717
Anlenkstangecoupling rod
1818
Kipphebelrocker arm
1919
Drehlagerpivot bearing
2020
Drehgelenk (Anlenkstange / Balkenträger)Swivel joint (connecting rod / beam support)
21.121.1
Drehgelenk (Kipphebel / Anlenkstange)Swivel joint (rocker arm / linkage rod)
21.221.2
Drehgelenk (Kipphebel / Schwinge)Swivel joint (rocker arm / rocker)
2222
Zweite SchwingeSecond swingarm
2323
Drehlager (zweite Schwinge)Pivot bearing (second rocker)
24.124.1
Drehgelenk (Anlenkstange / Balkenträger)Swivel joint (connecting rod / beam support)
24.224.2
Drehgelenk (Anlenkstange / zweite Schwinge)Swivel joint (link rod / second rocker)
2525
Exzenterlagereccentric
2626
Exzenterwelleeccentric shaft
2727
Bewegungseinrichtungmover
2828
AbsteiferAbsteifer
2929
Bettplattebedplate
3030
Faserbahnfiber web
3131
Phasenverstelleinrichtungphase adjustment
3232
Steuereinrichtungcontrol device
33.1, 33.233.1, 33.2
Stellmotorservomotor

Claims (14)

  1. Device for needling a fibrous web (30), having at least one needle beam (1) which on its lower side includes a needle board (3) having a multiplicity of needles (4), having a beam support (2) which is held so as to be movable for holding the needle beam (1), having a vertical drive (5) which is connected to the beam support (2) for driving the beam support (2) in an oscillating manner in an upward and downward movement, and having a guide unit (12) for guiding the beam support (2) in a lineal manner, wherein the vertical drive (5) is formed by two eccentric drives (6.1, 6.2) which in each case include one crank shaft (9.1, 9.2) and one connecting rod (7.1, 7.2) which is connected via a rod head (10.1, 10.2) to the crank shaft, wherein the connecting rods (7.1, 7.2) by way of their rod eyes (11.1, 11.2) are connected via pivot joints (8.1, 8.2) to the beam support (2), and wherein the guide unit (12) includes at least one swing arm (13) which is held at one end by way of a pivot joint (14) on a machine frame (15),
    characterized in that
    the opposite end of the swing arm (13) and the beam support (2) are connected by way of a dual kinematics feature (16) to a plurality of elements (17, 22), wherein the swing arm (13) and the elements (17, 18, 22) of the dual kinematics feature (16) are disposed between the connecting rods (7.1, 7.2) of the vertical drive (5).
  2. Device according to Claim 1, characterized in that the elements of the dual kinematics feature (16) are formed by a linkage rod (17) and a frame lever (22), wherein the linkage rod (17) is connected by way of a pivot joint (20) to the beam support (2), and wherein the frame lever (22) is held by way of a pivot bearing (19, 23) on the machine frame (15).
  3. Device according to Claim 2, characterized in that the frame lever is configured as a rocker lever (18) which in a central region includes the pivot bearing (19), wherein the rocker lever (18) by way of one end is connected via a pivot joint (21.1) to the linkage rod (17) and by way of the opposite end is connected via a second pivot joint (21.2) to the swing arm (13).
  4. Device according to Claim 2, characterized in that the frame lever is configured as a second swing arm (22), and in that the first swing arm (13) and the second swing arm (22) are in each case connected via a pivot joint (24.1, 24.2) to the linkage rod (17).
  5. Device according to Claim 4, characterized in that the pivot joints (24.1, 24.2) of the swing arms (13, 22) are configured on the linkage rod (17) so as to be spaced apart from one another, wherein the pivot joint (20) is configured between the beam support (2) and the linkage rod (17) on a free end of the linkage rod (17) or in a central region of the linkage rod (17).
  6. Device according to Claim 4 or 5, characterized in that the pivot bearing (23) of the swing arm (22) is configured as an eccentric bearing (25) on the circumference of an eccentric shaft (26), which eccentric shaft (26) is selectively drivable or arrestable by means of a motion unit (27).
  7. Device according to one of Claims 4 to 6, characterized in that the two pivot bearings (14, 23) of the swing arms (13, 22) are disposed so as to be spaced apart from one another above the beam support (2).
  8. Device according to Claim 7, characterized in that the two pivot bearings (14, 23) of the swing arms are disposed so as to be symmetrical to a centre of the beam of the beam support (2).
  9. Device according to one of Claims 2 to 8, characterized in that the beam support (2) includes the pivot joint (20) for coupling the linkage rod (17) in the centre of the beam of said beam support (2).
  10. Device according to one of the preceding claims, characterized in that the pivot bearing (14) of the swing arm (13) is configured as an eccentric bearing (25) on the circumference of an eccentric shaft (26), which eccentric shaft (26) is selectively drivable or arrestable by means of a motion unit (27).
  11. Device according to one of the preceding claims, characterized in that the vertical drive (5) includes a phase-adjustment unit (31) for the phase-adjustment of the two crank shafts (9.1, 9.2).
  12. Device according to Claim 11, characterized in that the phase-adjustment unit (31) includes two servomotors (33.1) and (33.2) which are assigned to the crank shafts (9.1) and (9.2) and are connected to a controller (32), wherein the servomotors (33.1) and (33.2), in order to rotate the crank shafts (9.1) and (9.2) in their bearings, are actuatable in a manner independent of one another by way of the controller (32).
  13. Device according to Claim 11, characterized in that the phase-adjustment unit (31) includes a servomotor and an adjustment mechanism which acts on the crank shafts (9.1) and (9.2).
  14. Device according to one of the preceding claims, characterized in that the swing arm (13) and the elements of the dual kinematics feature (16) are disposed above the beam support (2).
EP08786185.2A 2007-08-04 2008-07-16 Device for needling a fibrous web Not-in-force EP2173936B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007036897 2007-08-04
PCT/EP2008/059291 WO2009019111A1 (en) 2007-08-04 2008-07-16 Device for needling a fibrous web

Publications (2)

Publication Number Publication Date
EP2173936A1 EP2173936A1 (en) 2010-04-14
EP2173936B1 true EP2173936B1 (en) 2015-07-15

Family

ID=39954078

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08786185.2A Not-in-force EP2173936B1 (en) 2007-08-04 2008-07-16 Device for needling a fibrous web

Country Status (6)

Country Link
US (2) US8156618B2 (en)
EP (1) EP2173936B1 (en)
JP (1) JP2010535948A (en)
CN (1) CN101743350B (en)
RU (1) RU2466223C2 (en)
WO (1) WO2009019111A1 (en)

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CN109487442B (en) * 2018-11-30 2023-11-10 山东昌诺新材料科技有限公司 A kind of spunlace head for swing type front and back horizontal belt spunlace machine
FR3109587B1 (en) * 2020-04-23 2022-05-20 Andritz Asselin Thibeau Device for controlling the movement of the needles of a needling machine, in particular an elliptical, and needling machine comprising such a device
FR3109588B1 (en) * 2020-04-23 2022-10-14 Andritz Asselin Thibeau Elliptical needling machine with sealed casing and crossing guide pot
CN113774565B (en) * 2021-09-09 2022-11-04 广东三辉无纺机械有限公司 Needling mechanism of needling machine

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Also Published As

Publication number Publication date
US8156618B2 (en) 2012-04-17
CN101743350A (en) 2010-06-16
RU2466223C2 (en) 2012-11-10
US20120174357A1 (en) 2012-07-12
EP2173936A1 (en) 2010-04-14
RU2010107544A (en) 2011-09-20
WO2009019111A1 (en) 2009-02-12
US8272111B2 (en) 2012-09-25
US20100306978A1 (en) 2010-12-09
JP2010535948A (en) 2010-11-25
CN101743350B (en) 2011-06-15

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