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EP2530194B1 - Leno device with lever drive and covering section - Google Patents

Leno device with lever drive and covering section Download PDF

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Publication number
EP2530194B1
EP2530194B1 EP11168473.4A EP11168473A EP2530194B1 EP 2530194 B1 EP2530194 B1 EP 2530194B1 EP 11168473 A EP11168473 A EP 11168473A EP 2530194 B1 EP2530194 B1 EP 2530194B1
Authority
EP
European Patent Office
Prior art keywords
shaft
connecting rod
lifting
covering part
leno device
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.)
Active
Application number
EP11168473.4A
Other languages
German (de)
French (fr)
Other versions
EP2530194A1 (en
Inventor
Christian Gerth
Stefan Kailer
Bernd Dietrich
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.)
Groz Beckert KG
Original Assignee
Groz Beckert KG
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 Groz Beckert KG filed Critical Groz Beckert KG
Priority to EP11168473.4A priority Critical patent/EP2530194B1/en
Priority to JP2012121702A priority patent/JP6059855B2/en
Priority to CN201210319553.4A priority patent/CN102943333B/en
Priority to US13/486,420 priority patent/US8596304B2/en
Publication of EP2530194A1 publication Critical patent/EP2530194A1/en
Application granted granted Critical
Publication of EP2530194B1 publication Critical patent/EP2530194B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C7/00—Leno or similar shedding mechanisms

Definitions

  • a leno fabric is a fabric in which at least two warp threads do not run parallel to each other but wrap around each other.
  • a warp thread runs as a ground wire straight through the fabric, while another warp thread is guided as a loop above or below the ground thread back and forth and alternately formed on one side or the other a downward or upward loop for receiving the weft.
  • a rotary device is from the EP 2 063 007 B1 known.
  • the rotary device has two vertically displaceably mounted lifting shafts, each carrying lifting healds. Further, a relative to the HebeJeften vertically slidably mounted half-shaft is present, wearing half-heald.
  • a lever mechanism connects the half-shaft with at least one of the lifting shafts.
  • the lever mechanism has a connecting rod connected to the half shaft on a connecting rod joint and a link connected to the connecting rod on a coupling joint and to the lifting shaft on a shaft joint.
  • a gap is opened and closed again during operation of the rotary device. This depends on the position of the two lifting shafts.
  • monitoring devices for example, have been used in such rotary devices Photoelectric sensors attached to the loom. If an operator intervenes in the movement space of the lifting shafts, the weaving machine is stopped immediately. Due to the high speed of the lifting shafts, injuries can otherwise occur if the hand or the fingers enter the intermediate space between the connecting rod and the handlebar, which subsequently closes again.
  • a cover member is present, which may for example be designed as a flat plate.
  • the cover may be attached to one of the lifting shafts or to a part of the lever mechanism, for example on the handlebar or on the connecting rod.
  • the cover part may be formed by the connecting rod itself, so that the cover part and the connecting rod consist of the same material and merge into one another without a joining or separating point.
  • the cover member has a size and a contour that completely, but at least partially, covers the space between the connecting rod and the handlebar in each position of the two lifting shanks so as to pass through the space in a warp direction transverse to the plane of extension of the lifting shaft is not possible.
  • the cover part moves together with the rotary device. Although this increases the mass to be accelerated. However, this results in a higher flexibility.
  • the rotary device can be used in any weaving machines without the need to retrofit additional security measures there.
  • the connecting rod is connected via a first link to the first lifting shaft and a second link to the second lifting shaft.
  • the position of the connecting rod and thus of the half-shaft is determined by the relative position of the two lifting shafts.
  • the two shaft joints of the two links in the longitudinal extension direction of the lifting shafts can be arranged at a distance from each other.
  • the cover member is attached to the shaft rod in the region of the shaft joint of one of the two lifting shafts.
  • the cover conceals in the warp direction transverse to the plane of extension of the lifting shaft behind the arranged lever mechanism in each position of the two lifting shafts.
  • the cover member may be formed asymmetrically with respect to a central axis.
  • the center axis may, for example, extend vertically when the cover is attached to the lifting shaft.
  • the cover always moves with one of the lifting shafts, so that it occupies different relative positions in the two end positions of the lifting shafts with maximum distance relative to the lever mechanism.
  • the asymmetrical shape ensures a minimum size of the cover and yet a reliable coverage of the gap or the spaces between a respective handlebar and the connecting rod.
  • the length of the cover in the longitudinal direction of the shaft rods of the lifting shafts is preferably greater than the distance between the two shaft joints.
  • the height of the cover can be measured in the vertical direction, in particular greater than the distance of the connecting rod joint of the two Hebe2020ften when the two Hebetechfte occupy the same vertical position.
  • the cover can be rotatably connected to a link of the lever mechanism.
  • the cover part may have a circular sector-like shape. The center of the circular arc of the circular sector is located near the stem joint connected to the handlebar.
  • the cover is attached to the connecting rod.
  • the connecting rod is made of a stable material, for example of carbon or of metal, such as steel, or of a composite material.
  • the connecting rod has sufficient bending stiffness and buckling rigidity.
  • the covering part attached to the connecting rod may be made of another material, for example plastic or composite material, whose density is less than the density of the connecting rod material. As a result, a small total mass is obtained.
  • the cover member extends in a plane oriented parallel to the plane of extent of the lifting shafts.
  • the cover member may be in the form of a plate.
  • the cover part connected to the connecting rod is in particular between the two links. A crackdown through the space between the connecting rod and one of the links is not possible due to the cover.
  • the cover can also be provided as a retrofit for retrofitting a known rotary device.
  • the cover part has rounded corners and / or rounded edges, at least on its upper side, so that sharp edges with a great risk of injury during the upward movement of the cover part are avoided.
  • the cover may have a plurality of openings.
  • the shape and / or the area of these openings is chosen so that an intervention with a finger is not possible.
  • the cover part at least partially consists of a net-like or mesh-like region.
  • the cover member may have a frame structure in which a mesh or mesh material is held, such as woven or knitted material, such as textile material or a wire mesh.
  • the described different embodiments can also be combined with each other.
  • the rotary device according to the invention, equipped with the cover part is present in a weaving machine with a plurality of such rotary devices at least in the feed direction of the warp at the foremost and / or the rearmost point.
  • Interposed rotating devices can also be designed without cover.
  • FIG. 1 a known rotary device 15 is shown schematically.
  • the rotary device 15 has a first lifting shaft 16 and a second lifting shaft 17.
  • the two lifting shafts 16, 17 are identical and each have an upper shaft rod 18 and a lower shaft rod 19, which are aligned in the longitudinal direction L.
  • the upper shaft rod 18 and the lower shaft rod 19 of a lifting shaft 16, 17 are connected to each other at the two longitudinal ends, each with a side support 20.
  • the side supports 20 extend in the direction of movement of the lifting shafts 16, 17 and thus in the vertical direction V.
  • the two lifting shafts 16, 17 are movable independently of one another in the vertical direction V. This is an unillustrated shaft drive a loom.
  • each lifting shaft 16, 17 lifting healds 21 is arranged.
  • Each lifting shaft 16, 17 carries a plurality of lifting healds 21, wherein the sake of clarity in FIG. 1 only one lifting heald 21 is shown by way of example.
  • the rotary device 15 has a half-shank 25, are arranged on the half-shots 26.
  • the number of half strands 26 corresponds to the number of lifting healds 21 which are carried by one of the two lifting shafts 16, 17.
  • the half heald 26 cooperates with one heald 21 of one of the two heddle shafts 16, 17.
  • a lever mechanism 29 is provided according to the example.
  • the lever mechanism 29 couples the two lifting shafts 16, 17 with the half-shaft 25.
  • the lever mechanism 29 By the vertical displacement of the two lifting shafts 16, 17 is caused by the lever mechanism 29, a vertical movement of the half-shaft 25.
  • the lever mechanism 29 has two gear units 30 in the exemplary embodiment. Depending on the length of the lifting shafts in the longitudinal direction L more than two gear units 30 may be present.
  • the gear units 30 are constructed identically.
  • Each gear unit 30 has a connecting rod 31 which is pivotally connected to the half-shank 25 via a connecting rod joint 32.
  • the connecting rod 31 is connected via a coupling joint 33 to a first link 34 and a second link 35.
  • the first link 34 is connected at its opposite end of the coupling joint 33 via a shaft joint 36 with the upper shaft rod 18 of the first lifting shaft 16.
  • the second link 35 is connected at its opposite end of the coupling joint 33 via a shaft joint 36 with the upper shaft rod 18 of the second jack 17.
  • This structure is identical for all gear units 30.
  • the gear units 30 may be connected in a modification to the preferred embodiment with the lower shaft rods 19 of the lifting shafts 16, 17 and thus located on the underside of the lifting shafts 16, 17.
  • FIG. 2 In the longitudinal direction L of the shaft rods 18, 19, the two shaft joints 36 of a transmission unit 30 are arranged at a distance from each other. Between the coupling joint 33 and the two shaft joints 36 a triangular surface F is clamped, the in FIG. 2 is schematically illustrated by a cross-hatching. In the area of this surface F, a gap Z can be formed between the connecting rod 31 and the first link 34 and / or the second link 35 be. This gap Z can be opened or enlarged depending on the position of the two lifting shafts 16, 17 and also be reduced or closed in the case of reverse relative movement between the two lifting shafts 16, 17. This is exemplified by the FIGS. 2 and 3 illustrated. In FIG.
  • the two lifting shafts 16, 17 are arranged in the vertical direction V at the same height.
  • the connecting rod 31 extends substantially in the vertical direction V.
  • the two links 34, 35 extend obliquely to the vertical direction V and obliquely to the longitudinal direction L in each of a plane defined by the vertical direction V and the longitudinal direction L.
  • a cover member 40 is provided which completely covers the gap Z between the connecting rod 31 and the two links 33, 34 of a gear unit 30 in each relative position of the two lifting shafts 16, 17.
  • a penetration through the gap Z between the connecting rod 31 and the first link 34 and the second link 35 is prevented with a finger or by hand in a Kettfadenraum K.
  • the warp direction K is transverse to the vertical direction V and transverse to the longitudinal direction L and in the FIGS. 1 to 8 and 10 and 11 across the drawing plane.
  • cover parts 40 are in a rotary device 15th according to the FIGS. 1 to 3 used to increase operational safety.
  • FIG. 4 an embodiment of a cover member 40 is illustrated, referred to as a first cover member 40a.
  • the first cover part 40a is attached to the connecting rod 31 and extends from the connecting line between the Pleuelgelenk 32 and the coupling joint 33 in both directions.
  • the first cover part 40a is configured in the form of a plate 41 having a thickness of a few millimeters to a maximum of 2 to 3 cm.
  • the plate 41 has two flat side surfaces 42 which are parallel to each other.
  • the first cover part 40a is arranged in a plane which extends between the two lifting operations 16, 17.
  • the connecting rod 31 is made for power transmission of a kink-resistant and rigid material, preferably made of metal - for example steel -, carbon or a stable composite material.
  • the connecting rod 31 serves to move the half-shaft 25 and must absorb the acceleration forces of the two lifting shafts 16, 17 and transmit them to the half-shank.
  • the cover 40 is almost free of forces.
  • the cover member 40 is made of a plastic or composite material having a lower density than the connecting rod 31.
  • the connecting rod 31 thus constitutes a kink and rigid core on which the first cover member 40 in the form of a plate 41 attached is.
  • the shape of the plate 41 in the first cover part 40a is made FIG. 5 recognizable.
  • the connecting rod 31 has at its upper end a first hole 43, which serves for fastening the connecting rod 31 on the coupling joint 33.
  • a second hole 44 is present, the articulated Connection of the connecting rod 31 via the Pleuelgelenk 32 with the half-shaft 25 is used.
  • the connecting rod 31 and the first cover 40a is preferably designed axially symmetrical.
  • the first cover part 40a has two wings 46 which protrude diametrically opposite from the central axis M and are arranged between the first hole 43 and the second hole 44 viewed in the direction of the center axis M.
  • the upper edge 45 of each wing 46 extends obliquely, alternatively also perpendicular to the central axis M to the outside.
  • the upper edge 45 passes over a curvature 47, which preferably runs along a circular arc, into an outer edge 48 of the wing 46, which runs essentially parallel to the central axis M.
  • the outer edge 48 merges into a lower edge 49, which in the exemplary embodiment extends essentially radially to the central axis M.
  • the distance of the second hole 44 from the lower edge 49 of the two wings 46 is at least half as large as the distance between the first hole 43 and the second hole 44.
  • the distance of the lower edge 49 from the first hole 43 is at least as long as the length of the two links 34, 35, so the distance between the shaft joint 36 and the coupling joint 33rd
  • the plate 41 may have a plurality of openings 50, as shown only by way of example with reference to the right wing 46 in FIG FIG. 5 is shown.
  • the apertures may be distributed over the entire surface of the first cover member 40a or limited to one or more areas, so that remain open to stabilize the cover and non-perforated areas, the Form webs 53.
  • the size or the contour of the apertures 50 is chosen so that an operator can not put a finger through.
  • the shape of the apertures 50 may have a circular, slot-shaped, polygonal or any other contour.
  • first cover plate 40a may have a frame 51 which, alone or together with the connecting rod 31, completely encloses an opening in the first cover part 40a.
  • a grid-like and / or net-like and / or mesh-like insert 52 is used, which completely fills the opening within the frame 51.
  • the existing in use 52 mesh-like openings are chosen so small that an operator can not reach through with a finger.
  • the weight of the first cover member 40a can be further reduced.
  • the first cover part 40a may also have a plurality of openings each having an insert 52. A combination of openings 50 and provided with an insert 52 openings is possible.
  • the frame 51 may also be made of the same material as the connecting rod 31. It is also possible that at least one web 53 or additionally at least one stiffening rib or a reinforcing element in the plate 41 and / or between the frame 51 and the connecting rod 31 is provided. Such stiffening or reinforcing elements may be made of a less bending and kinking material than the remaining parts of the first cover 40a.
  • FIG. 4 schematically illustrates how the position of the first cover member 40a and the plate 41 changes when the two lifting shafts 16, 17 move relative to each other. It can be seen that due to the mounted on the connecting rod 31 plate 41 no gap between the two links 34, 35 and the connecting rod 31 is formed by an operator accidentally could reach through.
  • FIG. 6 is an illustration with a view of the front in the warp direction K, second lifting shaft 17, while FIGS. 7 and 8th illustrate a view in the opposite direction.
  • the second cover part 40b is likewise designed in the form of a plate 41.
  • the plate 41 of the second cover part 40b is non-rotatably connected to the second link 35.
  • the plate 41 in this case has a contour which is similar to a circular sector.
  • a side edge 55 extends along a circular arc whose center is in the vicinity of the shaft joint 36, via which the second link 35 is connected to the upper shaft rod 18 of the second lifting shaft 17.
  • the plate 41 of the second cover member 40a extends in a plane seen in the warp direction before the two lifting shafts 16, 17 and is stretched by the vertical direction V and the longitudinal extension direction L.
  • the side edge 55 merges in the region of the coupling joint 33 via a radius 56 into a straight edge 57 which extends in the direction of the shaft joint 36.
  • Another straight edge 57 extends from the coupling joint 33 opposite end of the side edge 55 in the direction of the shaft joint 36 out.
  • the two straight edges 57 are formed by a radially curved edge portion 58 interconnected.
  • the transition between the straight edge 57 and the side edge 55 at the opposite end of the coupling joint 33 is formed by a corner 59, for example.
  • At least the vertical edge V upwardly facing edge transitions are curved or radiused to reduce the risk of injury to the operator, as in the FIGS. 12 and 13 is shown schematically.
  • FIG. 9 is a cross-sectional view transversely to the longitudinal direction L illustrated.
  • the second cover part 40b formed by the plate 41 is shown with respect to the side edge 55 running along a circular arc.
  • the connection between the second cover part 40b and the second link 35 is effected, for example, by means of two spacers 60 which serve for the second cover part 40b formed as a plate 41 and the upper shaft rod 18 of the second lift shaft 17 to be spaced apart to form a gap 61 ,
  • These spacers 60 may be one-piece or multi-piece part of the second cover part 40b and therefore be made without a seam and joint made of a uniform material together with the second cover part 40b.
  • the spacers 60 prevent the second cover part 40b from accidentally coming into contact with the upper shaft rod 18 during operation of the rotary device 15.
  • the second cover part 40b covers the upper shaft rod 18 of the second lifting shaft 17 in each position of the two lifting shafts 16, 17 partially in the warp direction K, so that the operator can not pinch the hand between the upper shaft rod 18 and the second cover part 40b.
  • FIG. 9 is also seen that the pivot axes S of the coupling joint 33, the connecting rod joint 32 and the shaft joints 36 are aligned parallel to each other and, for example, are oriented in the warp direction K.
  • FIGS. 10 and 11 a third cover member 40 is again schematically illustrated in the form of a plate 41.
  • FIG. 10 is an illustration with a view of the front in the warp direction K, second lifting shaft 17, while FIG. 11 illustrates a view in the opposite direction.
  • the third cover part 40c unlike the first two embodiments 40a and 40b, is fixedly connected to one of the upper shaft rods 18 and, for example, to the upper shaft rod 18 of the second lifting shaft 17.
  • FIG. 10 is an illustration with a view towards the second lifting shaft 17
  • FIG. 11 is a view looking towards the first lifting shaft 16.
  • the plate 41 is designed asymmetrically.
  • the plate 41 has a first edge 65 extending substantially in the vertical direction V and a second edge 66 extending parallel thereto on the opposite side. As seen in the vertical direction V, the first edge 65 is longer than the second edge 66.
  • An upper edge 67 of the plate 41 forming the third cover part 40c extends approximately in the longitudinal direction L. The upper edge 67 is over a first transition radius 68 with the first edge 65 and connected via a second transition radius 69 with the second edge 66. The first transition radius 68 is smaller than the second transition radius 69.
  • the plate 41 of the third cover part 40c Due to this asymmetrical shape of the plate 41 of the third cover part 40c, the area thereof is as small as possible. At the same time it is ensured that the gap between the connecting rod 31 and the two links 34, 35 in each position of the two lifting shafts 16, 17 completely is covered.
  • the asymmetrical shape is necessary because the third cover part 40c is immovable in the vertical direction V with respect to the second lifting shaft 17, while the third cover part 40c relative to the first lifting shaft 16 performs a relative vertical movement.
  • the first edge 65 is disposed adjacent to the second link 35 while the second edge 66 is adjacent to the first link 34.
  • FIG. 11 Dash-dot is in FIG. 11 illustrated when the second lifting shaft 17 relative to the first lifting shaft 16 moves together with the third cover 40c down. Dashed is in FIG. 11 the position of the first link 34 and the connecting rod 31 drawn when the first lifting shaft 16 relative to the second lifting shaft 17 moves vertically downwards. At this time, the third cover part 40c remains in the position shown by the solid line. In both cases, it can be seen that the links 34, 35 and any intermediate space Z between these links 34, 35 and the connecting rod 31 is completely covered in all relative positions of the lifting shafts 16, 17 in the warp direction K.
  • At least the vertically upwardly facing edges and / or corners of the cover member 40 may be rounded in all embodiments, as shown schematically in the FIGS. 12 and 13 is illustrated.
  • these edges are increased compared to the thickness of the plate 41, so that a thickening 70 is formed.
  • This thickening 70 represents, so to speak, a circumferential protection against the edge.
  • the thickening 70 can also be realized by a separate, flexible element that is placed on the edge of the plate 41 and glued or molded or otherwise materially wound there, as shown in FIG FIG. 13 Shown schematically by the dotted line is.
  • first cover part 40a and the second cover part 40b can be firmly bonded to the connecting rod 31 or to the handlebar 34 or 35, for example by an adhesive connection. It is also possible to produce the cover part 40a, 40b by injection molding and to mold directly during injection molding to the connecting rod 31 or the handlebars 34, 35.
  • the length of the cover member 40 seen in the longitudinal direction L is greater than the distance between the two shaft joints 36 in the longitudinal direction L.
  • the height of the cover 40 in the vertical direction V at the coupling joint 33 measured when the two lifting shafts 16, 17 occupy the same vertical position is greater than the distance of the coupling joint 33 from the two lifting shafts 16, 17 in the vertical direction V.
  • the present invention relates to a rotary device 15 for use in looms.
  • the rotary device 15 has a first lifting shaft 16, a second lifting shaft 17 and a half shaft 25.
  • the shafts 16, 17, 25 are connected to each other via a lever mechanism 29 with a plurality of gear units 30.
  • Each gear unit 30 has a connecting rod 31 and two links 34, 35.
  • the rotary device 15 has a separate cover part 40 for each gear unit 30.
  • the cover may be on one of the lifting shafts 16 or 17, be attached to one of the links 34, 35 of the gear unit 30 or the connecting rod 31.
  • the cover member 40 prevents an operator in the warp direction between the connecting rod 31 and the links 34 and 35 can reach through.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)

Description

Die vorliegende Erfindung betrifft eine Drehereinrichtung, wie sie zur Herstellung von Drehergeweben verwendet werden. Ein Drehergewebe ist ein Gewebe, bei dem zumindest zwei Kettfäden nicht parallel nebeneinander herlaufen, sondern sich miteinander umschlingen. Beispielsweise läuft ein Kettfaden als Steherfaden gerade durch das Gewebe, während ein anderer Kettfaden als Schlingfaden über oder unter dem Steherfaden hin und her geführt ist und abwechselnd an der einen oder anderen Seite eine nach unten oder nach oben gerichtete Schlinge zur Aufnahme des Schussfadens bildet.The present invention relates to a rotary device, as used for the production of leno fabrics. A leno fabric is a fabric in which at least two warp threads do not run parallel to each other but wrap around each other. For example, a warp thread runs as a ground wire straight through the fabric, while another warp thread is guided as a loop above or below the ground thread back and forth and alternately formed on one side or the other a downward or upward loop for receiving the weft.

Eine Drehereinrichtung ist aus der EP 2 063 007 B1 bekannt. Die Drehereinrichtung weist zwei vertikal verschiebbar gelagerte Hebeschäfte auf, die jeweils Hebelitzen tragen. Ferner ist ein relativ zu den Hebeschäften vertikal verschiebbar gelagerter Halbschaft vorhanden, der Halblitzen trägt. Ein Hebelgetriebe verbindet den Halbschaft mit wenigstens einem der Hebeschäfte. Das Hebelgetriebe weist ein mit dem Halbschaft an einem Pleuelgelenk verbundenes Pleuel und einen mit dem Pleuel an einem Koppelgelenk und mit dem Hebeschaft an einem Schaftgelenk verbundenen Lenker auf.A rotary device is from the EP 2 063 007 B1 known. The rotary device has two vertically displaceably mounted lifting shafts, each carrying lifting healds. Further, a relative to the Hebeschäften vertically slidably mounted half-shaft is present, wearing half-heald. A lever mechanism connects the half-shaft with at least one of the lifting shafts. The lever mechanism has a connecting rod connected to the half shaft on a connecting rod joint and a link connected to the connecting rod on a coupling joint and to the lifting shaft on a shaft joint.

Zwischen dem Lenker und dem Pleuel wird beim Betrieb der Drehereinrichtung ein Zwischenraum geöffnet und wieder geschlossen. Dies hängt von der Position der beiden Hebeschäfte ab. Um die Betriebssicherheit einer solchen Drehereinrichtung zu gewährleisten, wurden bei solchen Drehereinrichtungen Überwachungseinrichtungen, beispielsweise Lichtschranken an der Webmaschine angebracht. Greift eine Bedienperson in den Bewegungsraum der Hebeschäfte ein, wird die Webmaschine sofort stillgesetzt. Aufgrund der hohen Geschwindigkeit der Hebeschäfte kann es ansonsten zu Verletzungen kommen, wenn die Hand bzw. die Finger in den Zwischenraum zwischen Pleuel und Lenker gelangen, der sich anschließend wieder schließt.Between the handlebar and the connecting rod, a gap is opened and closed again during operation of the rotary device. This depends on the position of the two lifting shafts. In order to ensure the operational safety of such a rotary device, monitoring devices, for example, have been used in such rotary devices Photoelectric sensors attached to the loom. If an operator intervenes in the movement space of the lifting shafts, the weaving machine is stopped immediately. Due to the high speed of the lifting shafts, injuries can otherwise occur if the hand or the fingers enter the intermediate space between the connecting rod and the handlebar, which subsequently closes again.

Es besteht jedoch das Problem, dass das Abschalten der Webmaschine nicht zum sofortigen Stillstand der Hebeschäfte führt, sondern ein gewisser Nachlauf der Hebeschäfte zwangsläufig vorhanden ist. Außerdem sind derartige Überwachungseinrichtungen aufwendig und teuer.However, there is the problem that the shutdown of the weaving machine does not lead to the immediate stoppage of the lifting operations, but a certain caster of lifting operations is inevitably present. In addition, such monitoring devices are complicated and expensive.

Es kann als Aufgabe der vorliegenden Erfindung angesehen werden, die erwähnten Nachteile zu beseitigen und eine Drehereinrichtung zu schaffen, die eine höhere Bediensicherheit gewährleistet.It can be regarded as an object of the present invention to eliminate the disadvantages mentioned and to provide a rotary device which ensures a higher operating safety.

Diese Aufgabe wird durch eine Drehereinrichtung mit den Merkmalen des Patentanspruches 1 gelöst. Bei der Drehereinrichtung ist ein Abdeckteil vorhanden, das beispielsweise als flache Platte ausgeführt sein kann. Das Abdeckteil kann an einem der Hebeschäfte oder an einem Teil des Hebelgetriebes, beispielsweise am Lenker oder am Pleuel angebracht sein. Es ist auch möglich, dass das Abdeckteil vom Pleuel selbst gebildet ist, so dass das Abdeckteil und das Pleuel aus demselben Material bestehen und ohne Füge- oder Trennstelle ineinander übergehen. Das Abdeckteil weist eine Größe und eine Kontur auf, die den Zwischenraum zwischen dem Pleuel und dem Lenker in jeder Position der beiden Hebeschäfte vollständig, wenigstens aber teilweise, abdeckt, so dass ein Durchgreifen durch den Zwischenraum in einer Kettfadenrichtung, die quer zur Erstreckungsebene des Hebeschafts orientiert ist, nicht möglich ist. Das Abdeckteil bewegt sich gemeinsam mit der Drehereinrichtung. Zwar wird dadurch die zu beschleunigende Masse vergrößert. Allerdings ergibt sich auf diese Weise eine höhere Flexibilität. Die Drehereinrichtung kann in beliebigen Webmaschinen eingesetzt werden, ohne dass dort zusätzliche Sicherheitsmaßnahmen nachgerüstet werden müssen.This object is achieved by a rotary device with the features of claim 1. In the rotary device, a cover member is present, which may for example be designed as a flat plate. The cover may be attached to one of the lifting shafts or to a part of the lever mechanism, for example on the handlebar or on the connecting rod. It is also possible for the cover part to be formed by the connecting rod itself, so that the cover part and the connecting rod consist of the same material and merge into one another without a joining or separating point. The cover member has a size and a contour that completely, but at least partially, covers the space between the connecting rod and the handlebar in each position of the two lifting shanks so as to pass through the space in a warp direction transverse to the plane of extension of the lifting shaft is not possible. The cover part moves together with the rotary device. Although this increases the mass to be accelerated. However, this results in a higher flexibility. The rotary device can be used in any weaving machines without the need to retrofit additional security measures there.

Es ist von Vorteil, wenn das Pleuel über einen ersten Lenker mit dem ersten Hebeschaft und über einen zweiten Lenker mit dem zweiten Hebeschaft verbunden ist. Dadurch wird die Position des Pleuels und mithin des Halbschafts durch die Relativlage der beiden Hebeschäfte bestimmt. Dabei können die beiden Schaftgelenke der beiden Lenker in Längserstreckungsrichtung der Hebeschäfte mit Abstand voneinander angeordnet sein.It is advantageous if the connecting rod is connected via a first link to the first lifting shaft and a second link to the second lifting shaft. As a result, the position of the connecting rod and thus of the half-shaft is determined by the relative position of the two lifting shafts. In this case, the two shaft joints of the two links in the longitudinal extension direction of the lifting shafts can be arranged at a distance from each other.

Bei einem Ausführungsbeispiel ist das Abdeckteil am Schaftstab im Bereich des Schaftgelenks eines der beiden Hebeschäfte angebracht. Das Abdeckteil verdeckt dabei in Kettfadenrichtung quer zur Erstreckungsebene des Hebeschafts das dahinter angeordnete Hebelgetriebe in jeder Position der beiden Hebeschäfte.In one embodiment, the cover member is attached to the shaft rod in the region of the shaft joint of one of the two lifting shafts. The cover conceals in the warp direction transverse to the plane of extension of the lifting shaft behind the arranged lever mechanism in each position of the two lifting shafts.

Das Abdeckteil kann gegenüber einer Mittelachse unsymmetrisch ausgebildet sein. Die Mittelachse kann beispielsweise vertikal verlaufen, wenn das Abdeckteil am Hebeschaft angebracht ist. Bei dieser Ausführung bewegt sich das Abdeckteil immer mit einem der Hebeschäfte mit, so dass es in den beiden Endlagen der Hebeschäfte mit maximalem Abstand gegenüber dem Hebelegetriebe verschiedene Relativpositionen einnimmt. Die unsymmetrische Form gewährleistet eine minimale Größe des Abdeckteils und dennoch eine zuverlässige Abdeckung des Zwischenraums bzw. der Zwischenräume zwischen einem jeweiligen Lenker und dem Pleuel.The cover member may be formed asymmetrically with respect to a central axis. The center axis may, for example, extend vertically when the cover is attached to the lifting shaft. In this embodiment, the cover always moves with one of the lifting shafts, so that it occupies different relative positions in the two end positions of the lifting shafts with maximum distance relative to the lever mechanism. The asymmetrical shape ensures a minimum size of the cover and yet a reliable coverage of the gap or the spaces between a respective handlebar and the connecting rod.

Bei allen Ausführungsbeispielen ist die Länge des Abdeckteils in Längserstreckungsrichtung der Schaftstäbe der Hebeschäfte gesehen vorzugsweise größer als der Abstand zwischen den beiden Schaftgelenken. Die Höhe des Abdeckteils kann in Vertikalrichtung gemessen insbesondere größer sein als der Abstand des Pleuelgelenks von den beiden Hebeschäften, wenn die beiden Hebeschäfte dieselbe vertikale Lage einnehmen.In all embodiments, the length of the cover in the longitudinal direction of the shaft rods of the lifting shafts is preferably greater than the distance between the two shaft joints. The height of the cover can be measured in the vertical direction, in particular greater than the distance of the connecting rod joint of the two Hebeschäften when the two Hebeschäfte occupy the same vertical position.

Bei einer weiteren Ausgestaltung kann das Abdeckteil drehfest mit einem Lenker des Hebelgetriebes verbunden sein. Insbesondere kann das Abdeckteil eine kreissektorähnliche Form aufweisen. Der Mittelpunkt des Kreisbogens des Kreissektors befindet sich dabei in der Nähe des mit dem Lenker verbundenen Schaftgelenks.In a further embodiment, the cover can be rotatably connected to a link of the lever mechanism. In particular, the cover part may have a circular sector-like shape. The center of the circular arc of the circular sector is located near the stem joint connected to the handlebar.

Bei einer weiteren bevorzugten Ausführungsform ist das Abdeckteil am Pleuel befestigt. Vorzugsweise besteht das Pleuel aus einem stabilen Material zum Beispiel aus Karbon oder aus Metall, wie beispielsweise Stahl, oder aus einem Verbundmaterial. Das Pleuel weist eine ausreichende Biegesteifigkeit und Knicksteifigkeit auf. Über das Pleuel muss zwischen den Hebeschäften und dem Halbschaft eine Kraft übertragen werden können. Aufgrund der hohen Beschleunigung der Hebeschäfte und des Halbschafts muss das Pleuel eine ausreichende Stabilität gewährleisten. Das am Pleuel angebrachte Abdeckteil kann aus einem anderen Material, beispielsweise Kunststoff - oder Verbundmaterial hergestellt sein, dessen Dichte geringer ist als die Dichte des Pleuelmaterials. Dadurch wird eine geringe Gesamtmasse erhalten. Vorzugsweise erstreckt sich das Abdeckteil in einer Ebene, die parallel zur Erstreckungsebene der Hebeschäfte orientiert ist. Das Abdeckteil kann die Form einer Platte aufweisen. Das mit dem Pleuel verbundene Abdeckteil befindet sich insbesondere zwischen den beiden Lenkern. Ein Durchgreifen durch den Zwischenraum zwischen dem Pleuel und einem der Lenker ist aufgrund des Abdeckteils nicht möglich.In a further preferred embodiment, the cover is attached to the connecting rod. Preferably, the connecting rod is made of a stable material, for example of carbon or of metal, such as steel, or of a composite material. The connecting rod has sufficient bending stiffness and buckling rigidity. About the connecting rod between the Hebeschäften and the half-shaft, a force must be transmitted. Due to the high acceleration of the lifting and the half-shaft, the connecting rod must ensure sufficient stability. The covering part attached to the connecting rod may be made of another material, for example plastic or composite material, whose density is less than the density of the connecting rod material. As a result, a small total mass is obtained. Preferably, the cover member extends in a plane oriented parallel to the plane of extent of the lifting shafts. The cover member may be in the form of a plate. The cover part connected to the connecting rod is in particular between the two links. A crackdown through the space between the connecting rod and one of the links is not possible due to the cover.

Das Abdeckteil kann auch als Nachrüstteil zur Nachrüstung einer bekannten Drehereinrichtung bereitgestellt werden.The cover can also be provided as a retrofit for retrofitting a known rotary device.

Bei allen genannten verschiedenen Ausführungsformen weist das Abdeckteil zumindest an seiner Oberseite abgerundete Ecken und/oder abgerundete Kanten auf, so dass scharfe Kanten mit großer Verletzungsgefahr bei der Aufwärtsbewegung des Abdeckteils vermieden sind.In all the various embodiments mentioned, the cover part has rounded corners and / or rounded edges, at least on its upper side, so that sharp edges with a great risk of injury during the upward movement of the cover part are avoided.

Um Gewicht zu reduzieren, kann das Abdeckteil eine Vielzahl von Durchbrechungen aufweisen. Die Form und/oder die Fläche dieser Durchbrechungen ist so gewählt, dass ein Eingreifen mit einem Finger nicht möglich ist.To reduce weight, the cover may have a plurality of openings. The shape and / or the area of these openings is chosen so that an intervention with a finger is not possible.

Es ist außerdem möglich, wenn das Abdeckteil zumindest teilweise aus einem netzartigen oder maschenartigen Bereich besteht. Beispielsweise kann das Abdeckteil eine Rahmenstruktur aufweisen, in der ein Netz- oder Maschenmaterial gehalten wird, beispielsweise gewebtes oder gestricktes Material, beispielsweise Textilmaterial oder auch ein Drahtgewebe.It is also possible if the cover part at least partially consists of a net-like or mesh-like region. For example, the cover member may have a frame structure in which a mesh or mesh material is held, such as woven or knitted material, such as textile material or a wire mesh.

Die beschriebenen unterschiedlichen Ausführungsformen können auch miteinander kombiniert werden. Die erfindungsgemäße, mit dem Abdeckteil ausgestattete Drehereinrichtung ist in einer Webmaschine mit mehreren solcher Drehereinrichtungen zumindest in Zufuhrrichtung des Kettfadens an der vordersten und/oder der hintersten Stelle vorhanden. Dazwischen angeordnete Drehereinrichtungen können auch ohne Abdeckteil ausgeführt sein.The described different embodiments can also be combined with each other. The rotary device according to the invention, equipped with the cover part is present in a weaving machine with a plurality of such rotary devices at least in the feed direction of the warp at the foremost and / or the rearmost point. Interposed rotating devices can also be designed without cover.

Vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den abhängigen Patentansprüche sowie der Beschreibung. In der Beschreibung wird die Erfindung anhand von Ausführungsbeispielen erläutert. Die Beschreibung beschränkt sich auf wesentliche Merkmale der Ausführungsbeispiele uns sonstiger Gegebenheiten. Die Zeichnung ist ergänzend heranzuziehen. Es zeigen:

  • Figur 1 eine schematische Darstellung einer Drehereinrichtung nach dem Stand der Technik in Seitenansicht in Kettfadenrichtung quer zur Erstreckungsebene der Hebeschäfte,
  • Figuren 2 und 3 das Hebegetriebe der Drehereinrichtung gemäß Figur 1 in verschiedenen Relativpositionen der beiden Hebeschäfte in unterschiedlichen Blickrichtungen in Kettfadenrichtung,
  • Figur 4 ein erstes Ausführungsbeispiel eines erfindungsgemäßen Abdeckteils für die Drehereinrichtung in schematischer Darstellung,
  • Figur 5 abgewandelte Ausführungsformen des Abdeckteils aus Figur 4 in schematischer Darstellung,
  • Figuren 6 bis 8 ein weiteres Ausführungsbeispiel eines Abdeckteils für eine Drehervorrichtung in schematischer Darstellung, das mit einem Lenker verbunden von unterschiedlichen Seiten in Kettfadenrichtung betrachtet,
  • Figur 9 das Ausführungsbeispiel der Drehereinrichtung mit Abdeckteil gemäß der Figuren 6 bis 8 in einer schematischen Schnittdarstellung quer zur Längserstreckungsrichtung der Hebeschäfte,
  • Figuren 10 und 11 ein weiteres Ausführungsbeispiel eines Abdeckteils für eine Drehereinrichtung, das mit dem Schaftstab eines Hebeschafts verbunden ist, in unterschiedlichen Blickrichtungen in Kettfadenrichtung und
  • Figuren 12 und 13 unterschiedliche Ausgestaltungsmöglichkeiten für die Kanten des Abdeckteils.
Advantageous embodiments of the invention will become apparent from the dependent claims and the description. In the description of the invention will be explained with reference to embodiments. The description is limited to essential features of the embodiments and other conditions. The drawing is to be used as a supplement. Show it:
  • FIG. 1 a schematic representation of a rotary device according to the prior art in side view in warp direction transverse to the plane of extent of the lifting shafts,
  • FIGS. 2 and 3 the lifting gear of the rotary device according to FIG. 1 in different relative positions of the two lifting shafts in different directions of view in warp direction,
  • FIG. 4 a first embodiment of a cover according to the invention for the rotary device in a schematic representation,
  • FIG. 5 modified embodiments of the cover from FIG. 4 in a schematic representation,
  • FIGS. 6 to 8 another embodiment of a cover member for a leno device in a schematic representation, which is viewed with a handlebar from different sides in the warp direction,
  • FIG. 9 the embodiment of the rotary device with cover according to the FIGS. 6 to 8 in a schematic sectional view transversely to the longitudinal direction of the lifting shafts,
  • FIGS. 10 and 11 another embodiment of a cover member for a rotary device, which is connected to the shaft rod of a lifting shaft, in different directions of view in the warp direction and
  • FIGS. 12 and 13 different design options for the edges of the cover.

In Figur 1 ist eine bekannte Drehereinrichtung 15 schematisch dargestellt. Die Drehereinrichtung 15 weist einen ersten Hebeschaft 16 und einen zweiten Hebeschaft 17 auf. Die beiden Hebeschäfte 16, 17 sind identisch ausgeführt und weisen jeweils einen oberen Schaftstab 18 und einen unteren Schaftstab 19 auf, die in Längserstreckungsrichtung L ausgerichtet sind. Der obere Schaftstab 18 und der untere Schaftstab 19 eines Hebeschafts 16, 17 sind an den beiden Längsenden mit jeweils einer Seitenstütze 20 miteinander verbunden. Die Seitenstützen 20 erstrecken sich in Bewegungsrichtung der Hebeschäfte 16, 17 und mithin in Vertikalrichtung V. Die beiden Hebeschäfte 16, 17 sind unabhängig voneinander in Vertikalrichtung V bewegbar. Hierfür dient ein nicht dargestellter Schaftantrieb einer Webmaschine.In FIG. 1 a known rotary device 15 is shown schematically. The rotary device 15 has a first lifting shaft 16 and a second lifting shaft 17. The two lifting shafts 16, 17 are identical and each have an upper shaft rod 18 and a lower shaft rod 19, which are aligned in the longitudinal direction L. The upper shaft rod 18 and the lower shaft rod 19 of a lifting shaft 16, 17 are connected to each other at the two longitudinal ends, each with a side support 20. The side supports 20 extend in the direction of movement of the lifting shafts 16, 17 and thus in the vertical direction V. The two lifting shafts 16, 17 are movable independently of one another in the vertical direction V. This is an unillustrated shaft drive a loom.

An nicht dargestellten Litzentragschienen der Hebeschäfte 16, 17 sind Hebelitzen 21 angeordnet. Jeder Hebeschaft 16, 17 trägt eine Vielzahl von Hebelitzen 21, wobei der Übersichtlichkeit halber in Figur 1 lediglich jeweils eine Hebelitze 21 beispielhaft dargestellt ist.At not shown Litzentragschienen the lifting shafts 16, 17 lifting healds 21 are arranged. Each lifting shaft 16, 17 carries a plurality of lifting healds 21, wherein the sake of clarity in FIG. 1 only one lifting heald 21 is shown by way of example.

Außerdem weist die Drehereinrichtung 15 einen Halbschaft 25 auf, an dem Halblitzen 26 angeordnet sind. Die Anzahl der Halblitzen 26 entspricht der Anzahl der Hebelitzen 21, die von jeweils einem der beiden Hebeschäfte 16, 17 getragen werden. Bei der Herstellung des Drehergewebes arbeitet die Halblitze 26 mit jeweils einer Hebelitze 21 eines der beiden Webschäfte 16, 17 zusammen.In addition, the rotary device 15 has a half-shank 25, are arranged on the half-shots 26. The number of half strands 26 corresponds to the number of lifting healds 21 which are carried by one of the two lifting shafts 16, 17. In the production of the leno fabric, the half heald 26 cooperates with one heald 21 of one of the two heddle shafts 16, 17.

Zur Erzeugung der Relativbewegung in Vertikalrichtung V zwischen dem Halbschaft 25 und den beiden Hebeschäften 16, 17 ist beispielsgemäß ein Hebelgetriebe 29 vorhanden. Das Hebelgetriebe 29 koppelt die beiden Hebeschäfte 16, 17 mit dem Halbschaft 25. Durch das vertikale Verschieben der beiden Hebeschäfte 16, 17 wird über das Hebelgetriebe 29 eine Vertikalbewegung des Halbschafts 25 hervorgerufen.To produce the relative movement in the vertical direction V between the half-shaft 25 and the two lifting shafts 16, 17, a lever mechanism 29 is provided according to the example. The lever mechanism 29 couples the two lifting shafts 16, 17 with the half-shaft 25. By the vertical displacement of the two lifting shafts 16, 17 is caused by the lever mechanism 29, a vertical movement of the half-shaft 25.

Das Hebelegetriebe 29 weist beim Ausführungsbeispiel zwei Getriebeeinheiten 30 auf. Abhängig von der Länge der Hebeschäfte in Längserstreckungsrichtung L können auch mehr als zwei Getriebeeinheiten 30 vorhanden sein. Die Getriebeeinheiten 30 sind identisch aufgebaut. Jede Getriebeeinheit 30 weist ein Pleuel 31 auf, das über ein Pleuelgelenk 32 gelenkig mit dem Halbschaft 25 verbunden ist. An seinem dem Pleuelgelenk 32 entgegengesetzten Ende ist das Pleuel 31 über ein Koppelgelenk 33 mit einem ersten Lenker 34 und einem zweiten Lenker 35 verbunden. Der erste Lenker 34 ist an seinem dem Koppelgelenk 33 entgegengesetztem Ende über ein Schaftgelenk 36 mit dem oberen Schaftstab 18 des ersten Hebeschafts 16 verbunden. Der zweite Lenker 35 ist an seinem dem Koppelgelenk 33 entgegengesetztem Ende über ein Schaftgelenk 36 mit dem oberen Schaftstab 18 des zweiten Hebschafts 17 verbunden. Dieser Aufbau ist bei allen Getriebeeinheiten 30 identisch.The lever mechanism 29 has two gear units 30 in the exemplary embodiment. Depending on the length of the lifting shafts in the longitudinal direction L more than two gear units 30 may be present. The gear units 30 are constructed identically. Each gear unit 30 has a connecting rod 31 which is pivotally connected to the half-shank 25 via a connecting rod joint 32. At its end opposite the connecting rod end 32, the connecting rod 31 is connected via a coupling joint 33 to a first link 34 and a second link 35. The first link 34 is connected at its opposite end of the coupling joint 33 via a shaft joint 36 with the upper shaft rod 18 of the first lifting shaft 16. The second link 35 is connected at its opposite end of the coupling joint 33 via a shaft joint 36 with the upper shaft rod 18 of the second jack 17. This structure is identical for all gear units 30.

Die Getriebeeinheiten 30 können in Abwandlung zum bevorzugten Ausführungsbeispiel auch mit den unteren Schaftstäben 19 der Hebeschäfte 16, 17 verbunden sein und sich mithin an der Unterseite der Hebeschäfte 16, 17 befinden.The gear units 30 may be connected in a modification to the preferred embodiment with the lower shaft rods 19 of the lifting shafts 16, 17 and thus located on the underside of the lifting shafts 16, 17.

In Längserstreckungsrichtung L der Schaftstäbe 18, 19 sind die beiden Schaftgelenke 36 einer Getriebeeinheit 30 mit Abstand voneinander angeordnet. Zwischen dem Koppelgelenk 33 und den beiden Schaftgelenken 36 ist eine dreieckige Fläche F aufgespannt, die in Figur 2 schematisch durch eine Kreuzschraffur veranschaulicht ist. Im Bereich dieser Fläche F kann zwischen dem Pleuel 31 und dem ersten Lenker 34 und/oder dem zweiten Lenker 35 ein Zwischenraum Z gebildet sein. Dieser Zwischenraum Z kann abhängig von der Stellung der beiden Hebeschäfte 16, 17 geöffnet bzw. größer werden und bei umgekehrter Relativbewegung zwischen den beiden Hebeschäften 16, 17 auch verkleinert bzw. geschlossen werden. Dies ist beispielhaft anhand der Figuren 2 und 3 veranschaulicht. In Figur 2 sind die beiden Hebeschäfte 16, 17 in Vertikalrichtung V auf derselben Höhe angeordnet. Das Pleuel 31 verläuft im Wesentlichen in Vertikalrichtung V. Die beiden Lenker 34, 35 erstrecken sich schräg zur Vertikalrichtung V und schräg zur Längsrichtung L in jeweils einer durch die Vertikalrichtung V und die Längsrichtung L aufgespannten Ebene. Wird nun der zweite Hebeschaft 17 relativ zum ersten Hebeschaft 16 in Vertikalrichtung V abgesenkt, so kann er die in Figur 3 dargestellte Stellung einnehmen. Dabei ist der Zwischenraum Z zwischen dem zweiten Lenker 35 und dem Pleuel 31 vollständig verschwunden. Das Pleuel 31 und der zweite Lenker 35 verlaufen im Wesentlichen in dieselbe Richtung. Das versehentliche Eingreifen in einen solchen Zwischenraum Z kann für den Bediener zu Verletzungen an einem Finger oder der Hand führen.In the longitudinal direction L of the shaft rods 18, 19, the two shaft joints 36 of a transmission unit 30 are arranged at a distance from each other. Between the coupling joint 33 and the two shaft joints 36 a triangular surface F is clamped, the in FIG. 2 is schematically illustrated by a cross-hatching. In the area of this surface F, a gap Z can be formed between the connecting rod 31 and the first link 34 and / or the second link 35 be. This gap Z can be opened or enlarged depending on the position of the two lifting shafts 16, 17 and also be reduced or closed in the case of reverse relative movement between the two lifting shafts 16, 17. This is exemplified by the FIGS. 2 and 3 illustrated. In FIG. 2 the two lifting shafts 16, 17 are arranged in the vertical direction V at the same height. The connecting rod 31 extends substantially in the vertical direction V. The two links 34, 35 extend obliquely to the vertical direction V and obliquely to the longitudinal direction L in each of a plane defined by the vertical direction V and the longitudinal direction L. Now, if the second lifting shaft 17 is lowered relative to the first lifting shaft 16 in the vertical direction V, so he can in FIG. 3 occupy the position shown. In this case, the gap Z between the second arm 35 and the connecting rod 31 has completely disappeared. The connecting rod 31 and the second link 35 extend in substantially the same direction. The accidental intervention in such a gap Z can lead to injury to a finger or hand for the operator.

Erfindungsgemäß ist deshalb ein Abdeckteil 40 vorhanden, das den Zwischenraum Z zwischen den Pleuel 31 und den beiden Lenkern 33, 34 einer Getriebeeinheit 30 in jeder Relativlage der beiden Hebeschäfte 16, 17 vollständig abdeckt. Unter dem vollständigen Abdecken ist hier zu verstehen, dass ein Durchgreifen durch den Zwischenraum Z zwischen dem Pleuel 31 und dem ersten Lenker 34 bzw. dem zweiten Lenker 35 mit einem Finger oder mit der Hand in einer Kettfadenrichtung K verhindert wird. Die Kettfadenrichtung K verläuft quer zur Vertikalrichtung V und quer zur Längserstreckungsrichtung L und in den Figuren 1 bis 8 und 10 und 11 quer zur Zeichenebene. Nachfolgend werden verschiedene Ausführungsbeispiele des Abdeckteils 40 beschrieben. Diese Abdeckteile 40 werden bei einer Drehereinrichtung 15 gemäß der Figuren 1 bis 3 eingesetzt, um die Betriebssicherheit zu erhöhen.According to the invention, therefore, a cover member 40 is provided which completely covers the gap Z between the connecting rod 31 and the two links 33, 34 of a gear unit 30 in each relative position of the two lifting shafts 16, 17. Under the complete covering is to be understood here that a penetration through the gap Z between the connecting rod 31 and the first link 34 and the second link 35 is prevented with a finger or by hand in a Kettfadenrichtung K. The warp direction K is transverse to the vertical direction V and transverse to the longitudinal direction L and in the FIGS. 1 to 8 and 10 and 11 across the drawing plane. Hereinafter, various embodiments of the cover member 40 will be described. These cover parts 40 are in a rotary device 15th according to the FIGS. 1 to 3 used to increase operational safety.

In Figur 4 ist ein Ausführungsbeispiel für ein Abdeckteil 40 veranschaulicht, das als erstes Abdeckteil 40a bezeichnet wird. Das erste Abdeckteil 40a ist am Pleuel 31 befestigt und erstreckt sich ausgehend von der Verbindungslinie zwischen dem Pleuelgelenk 32 und dem Koppelgelenk 33 in beide Richtungen. Das erste Abdeckteil 40a ist in Form einer Platte 41 ausgestaltet, die eine Dicke von einigen Millimetern bis maximal 2 bis 3 cm aufweist. Die Platte 41 weist zwei flache Seitenflächen 42 auf, die parallel zueinander verlaufen. Das erste Abdeckteil 40a ist in einer Ebene angeordnet, die zwischen den beiden Hebeschäften 16, 17 verläuft.In FIG. 4 For example, an embodiment of a cover member 40 is illustrated, referred to as a first cover member 40a. The first cover part 40a is attached to the connecting rod 31 and extends from the connecting line between the Pleuelgelenk 32 and the coupling joint 33 in both directions. The first cover part 40a is configured in the form of a plate 41 having a thickness of a few millimeters to a maximum of 2 to 3 cm. The plate 41 has two flat side surfaces 42 which are parallel to each other. The first cover part 40a is arranged in a plane which extends between the two lifting operations 16, 17.

Das Pleuel 31 ist zur Kraftübertragung aus einem knicksteifen und biegesteifen Material hergestellt, vorzugsweise aus Metall - beispielsweise Stahl -, aus Karbon oder einem stabilen Verbundwerkstoff. Das Pleuel 31 dient zur Bewegung des Halbschafts 25 und muss die Beschleunigungskräfte der beiden Hebeschäfte 16, 17 aufnehmen und an den Halbschaft übertragen. Demgegenüber ist das Abdeckteil 40 nahezu kräftefrei. Beim bevorzugten Ausführungsbeispiel besteht das Abdeckteil 40 aus einem Kunststoff- oder Verbundmaterial mit geringerer Dichte als das Pleuel 31. Beim ersten Abdeckteil 40 stellt das Pleuel 31 somit einen knick- und biegesteifen Kern dar, an dem das erste Abdeckteil 40 in Form einer Platte 41 befestigt ist.The connecting rod 31 is made for power transmission of a kink-resistant and rigid material, preferably made of metal - for example steel -, carbon or a stable composite material. The connecting rod 31 serves to move the half-shaft 25 and must absorb the acceleration forces of the two lifting shafts 16, 17 and transmit them to the half-shank. In contrast, the cover 40 is almost free of forces. In the preferred embodiment, the cover member 40 is made of a plastic or composite material having a lower density than the connecting rod 31. In the first cover 40, the connecting rod 31 thus constitutes a kink and rigid core on which the first cover member 40 in the form of a plate 41 attached is.

Die Form der Platte 41 beim ersten Abdeckteil 40a ist aus Figur 5 erkennbar. Das Pleuel 31 weist an seinem oberen Ende ein erstes Loch 43 auf, das zur Befestigung des Pleuels 31 am Koppelgelenk 33 dient. Am unteren Ende ist am Pleuel 31 ein zweites Loch 44 vorhanden, das zur gelenkigen Verbindung des Pleuels 31 über das Pleuelgelenk 32 mit dem Halbschaft 25 dient. Gegenüber einer Mittelachse M durch die beiden Löcher 43, 44 ist das Pleuel 31 und das erste Abdeckteil 40a vorzugsweise achssymmetrisch gestaltet. Das erste Abdeckteil 40a weist dadurch zwei Flügel 46 auf, die von der Mittelachse M diametral entgegengesetzt wegragen und in Richtung der Mittelachse M betrachtet zwischen dem ersten Loch 43 und dem zweiten Loch 44 angeordnet sind. Ausgehend von dem das erste Loch 43 aufweisenden Ende des Pleuels 31 verläuft die Oberkante 45 jedes Flügels 46 schräg, alternativ auch senkrecht, zu der Mittelachse M nach außen. Die Oberkante 45 geht über eine Krümmung 47, die vorzugsweise entlang eines Kreisbogens verläuft, in eine Außenkante 48 des Flügels 46 über, die im Wesentlichen parallel zur Mittelachse M verläuft. An dem der Oberkante 45 entgegengesetzten Ende geht die Außenkante 48 in eine Unterkante 49 über, die sich beim Ausführungsbeispiel im Wesentlichen radial zur Mittelachse M erstreckt. In Richtung der Mittelachse M ist der Abstand des zweiten Lochs 44 von der Unterkante 49 der beiden Flügel 46 zumindest halb so groß, wie der Abstand zwischen dem ersten Loch 43 und dem zweiten Loch 44. Der Abstand der Unterkante 49 vom ersten Loch 43 ist zumindest so groß wie die Länge der beiden Lenker 34, 35, also der Abstand zwischen dem Schaftgelenk 36 und dem Koppelgelenk 33.The shape of the plate 41 in the first cover part 40a is made FIG. 5 recognizable. The connecting rod 31 has at its upper end a first hole 43, which serves for fastening the connecting rod 31 on the coupling joint 33. At the lower end of the connecting rod 31, a second hole 44 is present, the articulated Connection of the connecting rod 31 via the Pleuelgelenk 32 with the half-shaft 25 is used. Compared to a central axis M through the two holes 43, 44, the connecting rod 31 and the first cover 40a is preferably designed axially symmetrical. As a result, the first cover part 40a has two wings 46 which protrude diametrically opposite from the central axis M and are arranged between the first hole 43 and the second hole 44 viewed in the direction of the center axis M. Starting from the first hole 43 having the end of the connecting rod 31, the upper edge 45 of each wing 46 extends obliquely, alternatively also perpendicular to the central axis M to the outside. The upper edge 45 passes over a curvature 47, which preferably runs along a circular arc, into an outer edge 48 of the wing 46, which runs essentially parallel to the central axis M. At the end opposite the upper edge 45, the outer edge 48 merges into a lower edge 49, which in the exemplary embodiment extends essentially radially to the central axis M. In the direction of the center axis M, the distance of the second hole 44 from the lower edge 49 of the two wings 46 is at least half as large as the distance between the first hole 43 and the second hole 44. The distance of the lower edge 49 from the first hole 43 is at least as long as the length of the two links 34, 35, so the distance between the shaft joint 36 and the coupling joint 33rd

In Figur 5 sind weitere Abwandlungen des ersten Abdeckteils 40a schematisch dargestellt. Bei einer Abwandlung kann die Platte 41 eine Vielzahl von Durchbrechungen 50 aufweisen, wie dies lediglich beispielhaft anhand des rechten Flügels 46 in Figur 5 gezeigt ist. Die Durchbrechungen können über die gesamte Fläche des ersten Abdeckteils 40a verteilt angeordnet sein oder sich auf einen oder mehrere Bereiche beschränken, so dass zur Stabilisierung des Abdeckteils auch undurchbrochene Bereiche verbleiben, die Stege 53 bilden. Die Größe bzw. die Kontur der Durchbrechungen 50 ist so gewählt, dass eine Bedienperson einen Finger nicht hindurch stecken kann. Die Form der Durchbrechungen 50 kann kreisrund, schlitzförmig, polygonal oder eine beliebig andere Kontur aufweisen. Durch diese Durchbrechungen 50 wird das Gewicht der Platte 41 reduziert, das beim Betrieb der Drehereinrichtung 15 mitbeschleunigt werden muss.In FIG. 5 Further modifications of the first cover part 40a are shown schematically. In a modification, the plate 41 may have a plurality of openings 50, as shown only by way of example with reference to the right wing 46 in FIG FIG. 5 is shown. The apertures may be distributed over the entire surface of the first cover member 40a or limited to one or more areas, so that remain open to stabilize the cover and non-perforated areas, the Form webs 53. The size or the contour of the apertures 50 is chosen so that an operator can not put a finger through. The shape of the apertures 50 may have a circular, slot-shaped, polygonal or any other contour. Through these openings 50, the weight of the plate 41 is reduced, which must be mitbeschleunigt during operation of the rotary device 15.

Bei einer anderen Abwandlung der ersten Abdeckplatte 40a kann diese einen Rahmen 51 aufweisen, der allein oder gemeinsam mit dem Pleuel 31 eine Öffnung im ersten Abdeckteil 40a vollständig umschließt. In dieser Öffnung ist ein gitterartiger und/oder netzartiger und/oder maschenartiger Einsatz 52 eingesetzt, der die Öffnung innerhalb des Rahmens 51 vollständig ausfüllt. Die im Einsatz 52 vorhandenen maschenartigen Durchbrechungen sind so klein gewählt, dass eine Bedienperson mit einem Finger nicht hindurchgreifen kann. Bei dieser Ausführungsform kann das Gewicht des ersten Abdeckteils 40a weiter verringert werden. Es versteht sich, dass das erste Abdeckteil 40a auch mehrere Öffnungen mit jeweils einem Einsatz 52 aufweisen kann. Auch eine Kombination von Durchbrechungen 50 und mit einem Einsatz 52 versehenen Öffnungen ist möglich. Sollte eine größere Biegesteifigkeit des ersten Abdeckteils 40a erforderlich sein, kann der Rahmen 51 auch aus demselben Material hergestellt sein, wie das Pleuel 31. Es ist außerdem möglich, dass wenigstens ein Steg 53 oder zusätzlich zumindest eine Versteifungsrippe oder ein Verstärkungselement in der Platte 41 und/oder zwischen dem Rahmen 51 und dem Pleuel 31 vorgesehen ist. Derartige Versteifungs- oder Verstärkungselemente können aus einem weniger biege- und knicksteiferen Material hergestellt sein als die übrigen Teile des ersten Abdeckteils 40a.In another modification of the first cover plate 40a, it may have a frame 51 which, alone or together with the connecting rod 31, completely encloses an opening in the first cover part 40a. In this opening, a grid-like and / or net-like and / or mesh-like insert 52 is used, which completely fills the opening within the frame 51. The existing in use 52 mesh-like openings are chosen so small that an operator can not reach through with a finger. In this embodiment, the weight of the first cover member 40a can be further reduced. It is understood that the first cover part 40a may also have a plurality of openings each having an insert 52. A combination of openings 50 and provided with an insert 52 openings is possible. If a greater flexural rigidity of the first cover part 40a is required, the frame 51 may also be made of the same material as the connecting rod 31. It is also possible that at least one web 53 or additionally at least one stiffening rib or a reinforcing element in the plate 41 and / or between the frame 51 and the connecting rod 31 is provided. Such stiffening or reinforcing elements may be made of a less bending and kinking material than the remaining parts of the first cover 40a.

Strichpunktiert in Figur 4 ist schematisch veranschaulicht, wie sich die Position des ersten Abdeckteils 40a bzw. der Platte 41 verändert, wenn sich die beiden Hebeschäfte 16, 17 relativ zueinander bewegen. Dabei ist zu erkennen, dass aufgrund der am Pleuel 31 angebrachten Platte 41 kein Zwischenraum zwischen den beiden Lenkern 34, 35 und dem Pleuel 31 entsteht, durch den eine Bedienperson versehentlich hindurchgreifen könnte.Dash-dotted in FIG. 4 schematically illustrates how the position of the first cover member 40a and the plate 41 changes when the two lifting shafts 16, 17 move relative to each other. It can be seen that due to the mounted on the connecting rod 31 plate 41 no gap between the two links 34, 35 and the connecting rod 31 is formed by an operator accidentally could reach through.

In den Figuren 6 bis 9 ist ein zweites Abdeckteil 40b dargestellt. Figur 6 ist eine Darstellung mit Blick auf den in Kettfadenrichtung K vorderen, zweiten Hebeschaft 17, während Figuren 7 und 8 eine Ansicht in entgegengesetzter Blickrichtung veranschaulichen. Das zweite Abdeckteil 40b ist ebenfalls in Form einer Platte 41 ausgestaltet. Im Unterschied zum ersten Abdeckteil 40a ist die Platte 41 des zweiten Abdeckteils 40b drehfest mit dem zweiten Lenker 35 verbunden.In the FIGS. 6 to 9 a second cover part 40b is shown. FIG. 6 is an illustration with a view of the front in the warp direction K, second lifting shaft 17, while FIGS. 7 and 8th illustrate a view in the opposite direction. The second cover part 40b is likewise designed in the form of a plate 41. In contrast to the first cover part 40a, the plate 41 of the second cover part 40b is non-rotatably connected to the second link 35.

Die Platte 41 weist dabei eine Kontur auf, die ähnlich ist einem Kreissektor. Dabei verläuft eine Seitenkante 55 entlang eines Kreisbogens, dessen Mittelpunkt sich in der Nähe des Schaftgelenks 36 befindet, über das der zweite Lenker 35 mit dem oberen Schaftstab 18 des zweiten Hebeschafts 17 verbunden ist. Die Platte 41 des zweiten Abdeckteils 40a erstreckt sich in einer Ebene die in Kettfadenrichtung gesehen vor den beiden Hebeschäften 16, 17 verläuft und durch die Vertikalrichtung V und die Längserstreckungsrichtung L aufgespannt ist. Die Seitenkante 55 geht im Bereich des Koppelgelenks 33 über einen Radius 56 in eine gerade Kante 57 über, die sich in Richtung zum Schaftgelenk 36 erstreckt. Eine weitere gerade Kante 57 verläuft von dem dem Koppelgelenk 33 entgegengesetzten Ende der Seitenkante 55 in Richtung zum Schaftgelenk 36 hin. Die beiden geraden Kanten 57 sind durch einen radial gekrümmten Kantenabschnitt 58 miteinander verbunden. Der Übergang zwischen der geraden Kante 57 und der Seitenkante 55 an dem dem Koppelgelenk 33 gegengesetzten Ende ist beispielsgemäß durch eine Ecke 59 gebildet. Zumindest die in Vertikalrichtung V nach oben weisenden Kantenübergänge sind gekrümmt oder über Radien gestaltet, um die Verletzungsgefahr für die Bedienperson zu verringern, wie dies auch in den Figuren 12 und 13 schematisch gezeigt ist.The plate 41 in this case has a contour which is similar to a circular sector. In this case, a side edge 55 extends along a circular arc whose center is in the vicinity of the shaft joint 36, via which the second link 35 is connected to the upper shaft rod 18 of the second lifting shaft 17. The plate 41 of the second cover member 40a extends in a plane seen in the warp direction before the two lifting shafts 16, 17 and is stretched by the vertical direction V and the longitudinal extension direction L. The side edge 55 merges in the region of the coupling joint 33 via a radius 56 into a straight edge 57 which extends in the direction of the shaft joint 36. Another straight edge 57 extends from the coupling joint 33 opposite end of the side edge 55 in the direction of the shaft joint 36 out. The two straight edges 57 are formed by a radially curved edge portion 58 interconnected. The transition between the straight edge 57 and the side edge 55 at the opposite end of the coupling joint 33 is formed by a corner 59, for example. At least the vertical edge V upwardly facing edge transitions are curved or radiused to reduce the risk of injury to the operator, as in the FIGS. 12 and 13 is shown schematically.

In Figur 9 ist eine Querschnittsansicht quer zur Längserstreckungsrichtung L veranschaulicht. Das von der Platte 41 gebildete zweite Abdeckteil 40b ist mit Blick auf die entlang eines Kreisbogens verlaufende Seitenkante 55 dargestellt. Die Verbindung zwischen dem zweiten Abdeckteil 40b und dem zweiten Lenker 35 erfolgt beispielsgemäß über zwei Distanzstücke 60, die dazu dienen, dass das als Platte 41 ausgebildete zweite Abdeckteil 40b und der obere Schaftstab 18 des zweiten Hebeschafts 17 unter Bildung eines Spalts 61 beabstandet zueinander angeordnet sind. Diese Distanzstücke 60 können ein- oder mehrstückiger Bestandteil des zweiten Abdeckteils 40b sein und daher ohne Naht- und Fügestelle aus einem einheitlichen Material gemeinsam mit dem zweiten Abdeckteil 40b hergestellt sein. Durch die Distanzstücke 60 wird verhindert, dass beim Betrieb der Drehereinrichtung 15 das zweite Abdeckteil 40b versehentlich in Kontakt gelangt mit dem oberen Schaftstab 18. Vorzugsweise überdeckt das zweite Abdeckteil 40b den oberen Schaftstab 18 des zweiten Hebeschafts 17 in jeder Position der beiden Hebeschäfte 16, 17 mit Blickrichtung in Kettfadenrichtung K teilweise, so dass der Bediener die Hand nicht zwischen den oberen Schaftstab 18 und das zweite Abdeckteil 40b einklemmen kann.In FIG. 9 is a cross-sectional view transversely to the longitudinal direction L illustrated. The second cover part 40b formed by the plate 41 is shown with respect to the side edge 55 running along a circular arc. The connection between the second cover part 40b and the second link 35 is effected, for example, by means of two spacers 60 which serve for the second cover part 40b formed as a plate 41 and the upper shaft rod 18 of the second lift shaft 17 to be spaced apart to form a gap 61 , These spacers 60 may be one-piece or multi-piece part of the second cover part 40b and therefore be made without a seam and joint made of a uniform material together with the second cover part 40b. The spacers 60 prevent the second cover part 40b from accidentally coming into contact with the upper shaft rod 18 during operation of the rotary device 15. Preferably, the second cover part 40b covers the upper shaft rod 18 of the second lifting shaft 17 in each position of the two lifting shafts 16, 17 partially in the warp direction K, so that the operator can not pinch the hand between the upper shaft rod 18 and the second cover part 40b.

Aus Figur 9 ist außerdem erkennbar, dass die Schwenkachsen S des Koppelgelenks 33, des Pleuelgelenks 32 sowie der Schaftgelenke 36 parallel zueinander ausgerichtet sind und beispielsgemäß in Kettfadenrichtung K orientiert sind.Out FIG. 9 is also seen that the pivot axes S of the coupling joint 33, the connecting rod joint 32 and the shaft joints 36 are aligned parallel to each other and, for example, are oriented in the warp direction K.

In den Figuren 10 und 11 ist ein drittes Abdeckteil 40 wiederum in Gestalt einer Platte 41 schematischer veranschaulicht. Figur 10 ist eine Darstellung mit Blick auf den in Kettfadenrichtung K vorderen, zweiten Hebeschaft 17, während Figur 11 eine Ansicht in entgegengesetzter Blickrichtung veranschaulicht. Das dritte Abdeckteil 40c ist im Unterschied zu den ersten beiden Ausführungsbeispielen 40a und 40b mit einem der oberen Schaftstäbe 18 und beispielsgemäß mit dem oberen Schaftstab 18 des zweiten Hebeschafts 17 fest verbunden. Figur 10 ist eine Darstellung mit Blickrichtung auf den zweiten Hebeschaft 17 und Figur 11 ist eine Darstellung mit Blickrichtung auf den ersten Hebeschaft 16. Gegenüber einer Mittelachse M, die in Längserstreckungsrichtung L mittig durch die Platte 41 verläuft, ist die Platte 41 unsymmetrisch gestaltet. Die Platte 41 weist eine im Wesentlichen in Vertikalrichtung V verlaufende erste Kante 65 und eine an der entgegengesetzten Seite parallel dazu verlaufende zweite Kante 66 auf. In Vertikalrichtung V gesehen ist die erste Kante 65 länger als die zweite Kante 66. Eine obere Kante 67 der das dritte Abdeckteil 40c bildenden Platte 41 verläuft in etwa in Längserstreckungsrichtung L. Die obere Kante 67 ist über einen ersten Übergangsradius 68 mit der ersten Kante 65 und über einen zweiten Übergangsradius 69 mit der zweiten Kante 66 verbunden. Der erste Übergangsradius 68 ist kleiner als der zweite Übergangsradius 69.In the FIGS. 10 and 11 a third cover member 40 is again schematically illustrated in the form of a plate 41. FIG. 10 is an illustration with a view of the front in the warp direction K, second lifting shaft 17, while FIG. 11 illustrates a view in the opposite direction. The third cover part 40c, unlike the first two embodiments 40a and 40b, is fixedly connected to one of the upper shaft rods 18 and, for example, to the upper shaft rod 18 of the second lifting shaft 17. FIG. 10 is an illustration with a view towards the second lifting shaft 17 and FIG. 11 is a view looking towards the first lifting shaft 16. Compared to a central axis M, which extends centrally in the longitudinal direction L through the plate 41, the plate 41 is designed asymmetrically. The plate 41 has a first edge 65 extending substantially in the vertical direction V and a second edge 66 extending parallel thereto on the opposite side. As seen in the vertical direction V, the first edge 65 is longer than the second edge 66. An upper edge 67 of the plate 41 forming the third cover part 40c extends approximately in the longitudinal direction L. The upper edge 67 is over a first transition radius 68 with the first edge 65 and connected via a second transition radius 69 with the second edge 66. The first transition radius 68 is smaller than the second transition radius 69.

Aufgrund dieser unsymmetrischen Gestalt der Platte 41 des dritten Abdeckteils 40c ist deren Fläche so klein wie möglich. Gleichzeitig ist sichergestellt, dass der Zwischenraum zwischen dem Pleuel 31 und den beiden Lenkern 34, 35 in jeder Position der beiden Hebeschäfte 16, 17 vollständig abgedeckt wird. Die unsymmetrische Gestalt ist deswegen notwendig, weil das dritte Abdeckteil 40c in Vertikalrichtung V unbeweglich ist gegenüber dem zweiten Hebeschaft 17, während das dritte Abdeckteil 40c gegenüber dem ersten Hebeschaft 16 eine vertikale Relativbewegung ausführt. Die erste Kante 65 ist benachbart zum zweiten Lenker 35 angeordnet, während die zweite Kante 66 benachbart zum ersten Lenker 34 verläuft.Due to this asymmetrical shape of the plate 41 of the third cover part 40c, the area thereof is as small as possible. At the same time it is ensured that the gap between the connecting rod 31 and the two links 34, 35 in each position of the two lifting shafts 16, 17 completely is covered. The asymmetrical shape is necessary because the third cover part 40c is immovable in the vertical direction V with respect to the second lifting shaft 17, while the third cover part 40c relative to the first lifting shaft 16 performs a relative vertical movement. The first edge 65 is disposed adjacent to the second link 35 while the second edge 66 is adjacent to the first link 34.

Strichpunktiert ist in Figur 11 dargestellt, wenn sich der zweite Hebeschaft 17 gegenüber dem ersten Hebeschaft 16 gemeinsam mit dem dritten Abdeckteil 40c nach unten bewegt. Gestrichelt ist in Figur 11 die Stellung des ersten Lenkers 34 und des Pleuels 31 eingezeichnet, wenn sich der erste Hebeschaft 16 gegenüber dem zweiten Hebeschaft 17 vertikal nach unten bewegt. Dabei verbleibt das dritte Abdeckteil 40c in der mit durchgezogener Linie gezeigten Position. In beiden Fällen ist zu erkennen, dass die Lenker 34, 35 und ein etwaiger Zwischenraum Z zwischen diesen Lenkern 34, 35 und dem Pleuel 31 in allen Relativpositionen der Hebeschäfte 16, 17 in Kettfadenrichtung K vollständig abgedeckt ist.Dash-dot is in FIG. 11 illustrated when the second lifting shaft 17 relative to the first lifting shaft 16 moves together with the third cover 40c down. Dashed is in FIG. 11 the position of the first link 34 and the connecting rod 31 drawn when the first lifting shaft 16 relative to the second lifting shaft 17 moves vertically downwards. At this time, the third cover part 40c remains in the position shown by the solid line. In both cases, it can be seen that the links 34, 35 and any intermediate space Z between these links 34, 35 and the connecting rod 31 is completely covered in all relative positions of the lifting shafts 16, 17 in the warp direction K.

Zumindest die in Vertikalrichtung nach oben weisenden Kanten und/oder Ecken des Abdeckteils 40 können bei allen Ausführungsbeispielen abgerundet sein, wie dies schematisch in den Figuren 12 und 13 veranschaulicht ist. Bei dem Ausführungsbeispiel gemäß Figur 13 sind diese Kanten gegenüber der Dicke der Platte 41 vergrößert, so dass eine Verdickung 70 gebildet ist. Diese Verdickung 70 stellt sozusagen einen entlang der Kante umlaufenden Verletzungsschutz dar. Die Verdickung 70 kann auch durch ein separates, flexibles Elemente realisiert sein, dass auf die Kante der Platte 41 aufgesetzt und dort aufgeklebt oder angespritzt oder anderweitig stoffschlüssig verwunden wird, wie dies in Figur 13 durch die strichpunktierte Linie schematisch dargestellt ist.At least the vertically upwardly facing edges and / or corners of the cover member 40 may be rounded in all embodiments, as shown schematically in the FIGS. 12 and 13 is illustrated. In the embodiment according to FIG. 13 these edges are increased compared to the thickness of the plate 41, so that a thickening 70 is formed. This thickening 70 represents, so to speak, a circumferential protection against the edge. The thickening 70 can also be realized by a separate, flexible element that is placed on the edge of the plate 41 and glued or molded or otherwise materially wound there, as shown in FIG FIG. 13 Shown schematically by the dotted line is.

Die im Zusammenhang mit dem ersten Abdeckteil 40a erläuterten Ausgestaltungen der Platte, insbesondere das Vorsehen von Durchbrechungen 50 und/oder das Vorsehen wenigstens einer, einen Einsatz 52 aufweisenden Öffnungen im Abdeckteil 40 können bei allen beschriebenen Ausführungsbeispielen vorgesehen sein. Insbesondere das erste Abdeckteil 40a und das zweite Abdeckteil 40b können stoffschlüssig am Pleuel 31 bzw. am Lenker 34 oder 35 befestigt sein, beispielsweise durch eine Klebeverbindung. Es ist auch möglich, das Abdeckteil 40a, 40b durch Spritzgießen herzustellen und unmittelbar beim Spritzgießen an das Pleuel 31 oder den Lenker 34, 35 anzuformen.The embodiments of the plate explained in connection with the first cover part 40a, in particular the provision of perforations 50 and / or the provision of at least one openings 52 having an insert 52 in the cover part 40, can be provided in all described embodiments. In particular, the first cover part 40a and the second cover part 40b can be firmly bonded to the connecting rod 31 or to the handlebar 34 or 35, for example by an adhesive connection. It is also possible to produce the cover part 40a, 40b by injection molding and to mold directly during injection molding to the connecting rod 31 or the handlebars 34, 35.

Bei allen Ausführungsbeispielen ist die Länge des Abdeckteils 40 in Längserstreckungsrichtung L gesehen größer als der Abstand zwischen den beiden Schaftgelenken 36 in Längserstreckungsrichtung L. Die Höhe des Abdeckteils 40 in Vertikalrichtung V am Koppelgelenk 33 gemessen, wenn die beiden Hebeschäfte 16, 17 dieselbe vertikale Lage einnehmen, ist größer als der Abstand des Koppelgelenks 33 von den beiden Hebeschäften 16, 17 in Vertikalrichtung V.In all embodiments, the length of the cover member 40 seen in the longitudinal direction L is greater than the distance between the two shaft joints 36 in the longitudinal direction L. The height of the cover 40 in the vertical direction V at the coupling joint 33 measured when the two lifting shafts 16, 17 occupy the same vertical position , is greater than the distance of the coupling joint 33 from the two lifting shafts 16, 17 in the vertical direction V.

Die vorliegende Erfindung betrifft eine Drehereinrichtung 15 zur Verwendung in Webmaschinen. Die Drehereinrichtung 15 weist einen ersten Hebeschaft 16, einen zweiten Hebeschaft 17 und einen Halbschaft 25 auf. Die Schäfte 16, 17, 25 sind über ein Hebelgetriebe 29 mit mehreren Getriebeeinheiten 30 miteinander verbunden. Jede Getriebeeinheit 30 weist ein Pleuel 31 und zwei Lenker 34, 35 auf. Um ein Einklemmen von Fingern oder der Hand zwischen dem Pleuel und einem der Hebel 34, 35 zu verhindern, weist die Drehereinrichtung 15 für jede Getriebeeinheit 30 ein separates Abdeckteil 40 auf. Das Abdeckteil kann an einem der Hebeschäfte 16 oder 17, an einem der Lenker 34, 35 der Getriebeeinheit 30 oder am Pleuel 31 befestigt sein. Das Abdeckteil 40 verhindert, dass eine Bedienperson in Kettfadenrichtung zwischen dem Pleuel 31 und den Lenkern 34 und 35 hindurchgreifen kann.The present invention relates to a rotary device 15 for use in looms. The rotary device 15 has a first lifting shaft 16, a second lifting shaft 17 and a half shaft 25. The shafts 16, 17, 25 are connected to each other via a lever mechanism 29 with a plurality of gear units 30. Each gear unit 30 has a connecting rod 31 and two links 34, 35. In order to prevent pinching of fingers or the hand between the connecting rod and one of the levers 34, 35, the rotary device 15 has a separate cover part 40 for each gear unit 30. The cover may be on one of the lifting shafts 16 or 17, be attached to one of the links 34, 35 of the gear unit 30 or the connecting rod 31. The cover member 40 prevents an operator in the warp direction between the connecting rod 31 and the links 34 and 35 can reach through.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

1515
Drehereinrichtungcrossing device
1616
erster Hebeschaftfirst lifting shaft
1717
zweiter Hebeschaftsecond lifting shaft
1818
oberer Schaftstabupper shaft rod
1919
unterer Schaftstablower shaft rod
2020
Seitenstützeside support
2121
Hebelitzelifting heald
2525
Halbschafthalf stock
2626
Halblitzehalf heald
2929
Hebelgetriebelever mechanism
3030
Getriebeeinheitgear unit
3131
Pleuelpleuel
3232
Pleuelgelenkjoint to
3333
Koppelgelenkcoupling joint
3434
erster Lenkerfirst handlebar
3535
zweiter Lenkersecond handlebar
3636
Schaftgelenkshaft joint
4040
Abdeckteilcover
40a40a
erstes Abdeckteilfirst cover part
40b40b
zweites Abdeckteilsecond cover part
40c40c
drittes Abdeckteilthird cover part
4141
Platteplate
4242
Seitenflächeside surface
4343
erstes Lochfirst hole
4444
zweites Lochsecond hole
4545
Oberkantetop edge
4646
Flügelwing
4747
Krümmungcurvature
4848
Außenkanteouter edge
4949
Unterkantelower edge
5050
Durchbrechungperforation
5151
Rahmenframe
5252
Einsatzcommitment
5353
Stegweb
5555
Seitenkanteside edge
5656
Radiusradius
5757
gerade KanteStraight edge
5858
Kantenabschnittedge portion
5959
Eckecorner
6060
Distanzstückspacer
6161
Spaltgap
6565
erste Kantefirst edge
6666
zweite Kantesecond edge
6767
obere Kanteupper edge
6868
erster Übergangsradiusfirst transition radius
6969
zweiten Übergangsradiussecond transition radius
7070
Verdickungthickening
FF
Flächearea
KK
Kettfadenrichtungwarp
LL
LängserstreckungsrichtungLongitudinal extension
MM
Mittelachsecentral axis
SS
Schwenkachseswivel axis
VV
Vertikalrichtungvertical direction
ZZ
Zwischenraumgap

Claims (13)

  1. Leno device (15)
    with a first vertically displaceably mounted lifting shaft (16) and a second vertically displaceably mounted lifting shaft (17), which respectively support lifting healds (21), and
    with a half shaft (25), which is mounted to be vertically displaceable relative to the lifting shafts (16, 17) and supports half healds (26), and
    with a lever gear (29), which ? to couple the movement of the half shaft (25) and connects at least one of the lifting shafts (16, 17) to one another,?
    wherein the lever gear (29) has a connecting rod (31) connected to the half shaft (25) at a connecting rod joint (32) and a guide bar (34, 35), which is connected to the connecting rod (31) at a coupling joint (33) and to the lifting shaft (25) at a shaft joint (36),
    characterised in that a covering part (40) is provided, which covers the interstice (Z), which opens and closes during operation of the leno arrangement (15) between the guide bar (34, 35) and the connecting rod (31).
  2. Leno device according to claim 1, characterised in that the connecting bar (31) is connected to the first lifting shaft (16) by means of a first guide bar (34) and to the second lifting shaft (17) by means of a second guide bar (35).
  3. Leno device according to claim 1, characterised in that the covering part (40, 40c) is attached to the shaft rod (18) of one of the two lifting shafts (16, 17).
  4. Leno device according to claim 1, characterised in that the covering part (40, 40c) is configured to be asymmetrical in relation to a centre axis (M).
  5. Leno device according to claim 1, characterised in that the covering part (40, 40b) is connected to the guide bar (34, 35) to be fixed against rotation.
  6. Leno device according to claim 1, characterised in that the covering part (40, 40b) has a sector-like shape.
  7. Leno device according to claim 1, characterised in that the covering part (40, 40a) is fastened to the connecting rod (31).
  8. Leno device according to claim 7, characterised in that the covering part (40, 40a) is connected integrally to the connecting rod (31).
  9. Leno device according to claim 1, characterised in that the covering part (40) is made from plastic or composite material.
  10. Leno device according to claim 1, characterised in that the covering part (40) is configured as a flat plate (41).
  11. Leno device according to claim 1, characterised in that the covering part (40) has a plurality of openings (50).
  12. Leno device according to claim 1, characterised in that the covering part (40) has a net-like or mesh-like section (52).
  13. Leno device according to claim 12, characterised in that the net-like or mesh-like section (52) is made from a woven or knitted material.
EP11168473.4A 2011-06-01 2011-06-01 Leno device with lever drive and covering section Active EP2530194B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP11168473.4A EP2530194B1 (en) 2011-06-01 2011-06-01 Leno device with lever drive and covering section
JP2012121702A JP6059855B2 (en) 2011-06-01 2012-05-29 Tangle weaving device with link mechanism and cover
CN201210319553.4A CN102943333B (en) 2011-06-01 2012-06-01 There is the leno device of linkage and cover
US13/486,420 US8596304B2 (en) 2011-06-01 2012-06-01 Leno device with linkage mechanism and cover part

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11168473.4A EP2530194B1 (en) 2011-06-01 2011-06-01 Leno device with lever drive and covering section

Publications (2)

Publication Number Publication Date
EP2530194A1 EP2530194A1 (en) 2012-12-05
EP2530194B1 true EP2530194B1 (en) 2014-03-05

Family

ID=44654539

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11168473.4A Active EP2530194B1 (en) 2011-06-01 2011-06-01 Leno device with lever drive and covering section

Country Status (4)

Country Link
US (1) US8596304B2 (en)
EP (1) EP2530194B1 (en)
JP (1) JP6059855B2 (en)
CN (1) CN102943333B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2530194B1 (en) * 2011-06-01 2014-03-05 Groz-Beckert KG Leno device with lever drive and covering section
EP2573240B1 (en) * 2011-09-20 2015-05-27 Groz-Beckert KG High speed safety heald shaft
CN105780240A (en) * 2016-04-25 2016-07-20 镇江恒创纺织机械有限公司 Leno heald frame system
CN107620146A (en) * 2017-10-31 2018-01-23 饶学政 A kind of gap weave pattern device of leather fly-shuttle loom
EP3792382B1 (en) * 2019-09-10 2024-02-07 Groz-Beckert KG Reed with plurality of strips

Family Cites Families (23)

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Publication number Priority date Publication date Assignee Title
US2043165A (en) * 1933-09-02 1936-06-02 Thermoid Rubber Company Doup heddle loom
CH391595A (en) * 1962-02-08 1965-04-30 Sulzer Ag Lathe device for weaving machines
US4275515A (en) * 1979-07-07 1981-06-30 Hinson Betty R Apparatus for making a handcrafted pile rug
EP0777003A2 (en) * 1994-02-23 1997-06-04 Lindauer Dornier Gesellschaft M.B.H Rotary leno selvedge mechanism for looms
BE1013594A3 (en) * 2000-07-12 2002-04-02 Picanol Nv METHOD AND APPARATUS FOR FORMING A TISSUE leno in a weaving machine.
JP4598962B2 (en) * 2001-01-11 2010-12-15 東芝機械株式会社 Safety cover device
DE10257519B3 (en) * 2002-12-10 2004-04-01 Klöcker-Entwicklungs-Gmbh Turned edge weaving unit, includes magnets near upper ends of reeds, with polarity arranged to cause mutual attraction
JP2004300637A (en) * 2003-03-31 2004-10-28 Toyota Industries Corp Opening device of loom
DE10326123B4 (en) * 2003-06-06 2007-01-04 Groz-Beckert Kg Shaft rod, manufacturing process for this and weave shank
DE10341629B4 (en) * 2003-09-10 2007-04-12 Groz-Beckert Kg Low vibration tray system
DE10362055B4 (en) * 2003-09-18 2008-02-14 Groz-Beckert Kg stave
DE10349381B4 (en) * 2003-10-21 2005-08-25 Groz-Beckert Kg Weave with new corner connector
JP2006022442A (en) * 2004-07-08 2006-01-26 Tsudakoma Corp Loom soundproofing device
JP4709538B2 (en) * 2004-12-02 2011-06-22 三州産業株式会社 Tobacco leaf filling and lifting equipment
DE502005008394D1 (en) * 2004-12-31 2009-12-03 Dornier Gmbh Lindauer THREAD FABRIC AND METHOD AND WEIGHING MACHINE FOR THE PRODUCTION THEREOF
DE102005044474B3 (en) * 2005-09-16 2007-01-04 Groz-Beckert Kg Shaft rod for a power loom, comprises a hollow profile with at least one oblong recess in the narrow side which tapers off at the ends and into which a reinforcing element is adhesively bonded
JP2007107128A (en) * 2005-10-13 2007-04-26 Toyota Industries Corp Selvedge shedding device in loom
ATE462030T1 (en) * 2005-11-04 2010-04-15 Promatech Spa WARP THREAD WEAVING DEVICE FOR FORMING WEAVED EDGES IN WEAVING MACHINES
DE102005057354B3 (en) * 2005-12-01 2007-06-21 Groz-Beckert Kg Knitting machine with air supply
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Also Published As

Publication number Publication date
CN102943333A (en) 2013-02-27
JP2012251288A (en) 2012-12-20
EP2530194A1 (en) 2012-12-05
US20120305124A1 (en) 2012-12-06
US8596304B2 (en) 2013-12-03
JP6059855B2 (en) 2017-01-11
CN102943333B (en) 2015-09-23

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