EP2938767A1 - Métier à tresser rotatif - Google Patents

Métier à tresser rotatif

Info

Publication number
EP2938767A1
EP2938767A1 EP13807935.5A EP13807935A EP2938767A1 EP 2938767 A1 EP2938767 A1 EP 2938767A1 EP 13807935 A EP13807935 A EP 13807935A EP 2938767 A1 EP2938767 A1 EP 2938767A1
Authority
EP
European Patent Office
Prior art keywords
coil
braiding
coil carrier
around
bobbin
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.)
Granted
Application number
EP13807935.5A
Other languages
German (de)
English (en)
Other versions
EP2938767B1 (fr
Inventor
Hubert Reinisch
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.)
Maschinenfabrik Niehoff GmbH and Co KG
Original Assignee
Maschinenfabrik Niehoff GmbH and Co 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 Maschinenfabrik Niehoff GmbH and Co KG filed Critical Maschinenfabrik Niehoff GmbH and Co KG
Publication of EP2938767A1 publication Critical patent/EP2938767A1/fr
Application granted granted Critical
Publication of EP2938767B1 publication Critical patent/EP2938767B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
    • D04C3/00—Braiding or lacing machines
    • D04C3/40—Braiding or lacing machines for making tubular braids by circulating strand supplies around braiding centre at equal distances
    • D04C3/46—Braiding or lacing machines for making tubular braids by circulating strand supplies around braiding centre at equal distances with thread carriers supported on rolls
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
    • D04C3/00—Braiding or lacing machines
    • D04C3/40—Braiding or lacing machines for making tubular braids by circulating strand supplies around braiding centre at equal distances
    • D04C3/42—Braiding or lacing machines for making tubular braids by circulating strand supplies around braiding centre at equal distances with means for forming sheds by controlling guides for individual threads
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
    • D04C3/00—Braiding or lacing machines
    • D04C3/40—Braiding or lacing machines for making tubular braids by circulating strand supplies around braiding centre at equal distances
    • D04C3/44—Braiding or lacing machines for making tubular braids by circulating strand supplies around braiding centre at equal distances with means for forming sheds by subsequently diverting various threads using the same guiding means

Definitions

  • the invention relates to a rotary braiding machine for braiding strand-like material, in particular wire or textile fibers, carbon fibers or other strand-shaped carbon materials, into braids.
  • Such rotary braiding machines are used for producing hollow tubular braids of the strand-like material, for example of metal wires, yarns or plastic fibers, or (by subsequent rolling of such a braided hose) of flat strand braids or for braiding for example a cable with a wire mesh or for the production of Low mass bodies, for example in lightweight construction, by braiding carbon fibers or other stranded carbon materials.
  • Fields of application for such manufactured technical braids are, for example, shields for electrical cables against electromagnetic fields or protective sheaths against mechanical stress on cables or hoses.
  • Another application is the production of medical braids for vascular implants, such as stents, vascular prostheses or the like.
  • the invention will be described using the example of a rotary braiding machine for wire as the strand material to be braided, ie for the production of wire braids.
  • this is not a limitation;
  • a rotary braiding machine of the type considered has a plurality of bobbins, each of which is arranged in a bobbin.
  • a coil is in this case a, preferably cylindrical, body for winding a wire to be interlaced, preferably with two flanges arranged at the ends of the cylindrical body and with a larger diameter than that of the coil body.
  • a bobbin carrier is a device in which a bobbin can be received, preferably rotatably supported about its longitudinal axis.
  • the rotary braiding machine considered in the context of the present invention is a so-called high-speed rotary braiding machine.
  • the rotary braiding machine has a braiding axis, ie a geometrical axis, in the direction of which the braid produced is formed and removed from the machine, for example by a take-off disk, and in the direction of which the material to be braided may also be supplied to the machine.
  • the braiding axis is preferably horizontal, vertical or inclined, preferably inclined at 45 degrees. The invention will be described below using the example of a rotary braiding machine with a vertically arranged braiding axis, but is equally applicable to rotary machines with differently arranged braiding axes.
  • the rotary braiding machine has a plurality of first bobbins, which can rotate about the braiding axis, and a plurality of second bobbins, which can perform a relative movement with respect to the first bobbins.
  • at least the first coil carriers are guided around the braiding axis along a closed guideway.
  • a guide track is understood to be a curve which substantially follows the first coil carriers during their movement, wherein the first coil carriers do not necessarily lie on this curve and / or have to touch them.
  • Guideway is formed, for example, as a circular rail and forms a slide bearing or rolling bearing track on which the first coil support mounted and slidably provided by sliding guides and / or rolling bearings.
  • first coil support mounted and slidably provided by sliding guides and / or rolling bearings.
  • first bobbins rotate on a circular guide track, through the center of which runs the braiding axis.
  • second coil carriers also move around the braiding axis, preferably at the same speed as the first coil carriers, but in the opposite direction to them.
  • the second coil carrier are mounted so that they can also rotate about the braiding.
  • Each first bobbin provides a strand of a first wire which is continuously unwound or withdrawn from the first bobbin mounted in the respective first bobbin.
  • every second coil carrier provides a strand of a second wire, which is continuously unwound or drawn off from the second coil mounted in the respective second coil carrier.
  • the first and second wires are guided inwardly at a certain angle to the braiding axis, where, due to the rotation of the bobbin and a simultaneous withdrawal movement of the braid, they are arranged in spiral tracks or around the material to be braided, the first with the second wires be intertwined.
  • first and the second wires must be crossed according to a specific pattern, ie they must be above or below each other's wire.
  • two juxtaposed second wires are first passed over two adjacent first wires, then passed under the next two adjacent first wires, and so forth (so-called "2-over-2 braid binding").
  • every second wire is also possible for every second wire to be alternately passed over a first wire and passed under a first wire (so-called “1-over-1-weave binding").
  • the area in which the crossed first and second wires come to rest on the braiding axis is also called a braiding point.
  • the crossing of the first and second wires is accomplished by periodically moving the second wires around the respective first coil carriers according to the desired crossover pattern and thus around the respective first wires.
  • this is done by the fact that each second wire can be raised and lowered via a mounted on the corresponding second coil carrier, movable so-called thread lever.
  • the considered second wire can be passed over a first coil carrier moving in the opposite direction or guided under this first coil carrier, whereby a corresponding crossover of the first and the second wire results with a second wire lying above or below.
  • the bearing of the first bobbin on the closed guide track, on which the first bobbin rotates about the braiding axis must be interrupted so that the first bobbin and the first bobbin at this point second wire can cross their paths.
  • this is accomplished by passing the second wire under the first bobbin, i.e., the second wire. H. that he "dives in” under the first spool carrier.
  • the closed guideway for the first coil support is provided, for example, for every other wire with a vertical, slot-shaped gap into which the respective second wire can dip, after which the first coil support moves over the lowered second wire.
  • Such gaps are distributed at regular intervals around the entire circumference of the guideway around at those locations where the second wires are to be lowered by means of their associated thread levers. Since the second coil carriers are rigidly connected to the guideway, it is ensured that every second wire can dive exactly into the gap provided in it for the guideway, without taking into account a relative movement in the circumferential direction between the second wires and the gaps in the guideway must become.
  • the present invention is therefore based on the object to provide an improved rotary braiding machine, in particular with an improved guidance of the first coil carrier along the guideway.
  • the invention is based on a rotary braiding machine with a braid axis for braiding wire to a wire mesh, which has a plurality of first coil carriers, which can rotate about the braiding axis, and a plurality of second coil carriers, which can perform a relative movement with respect to the first coil carriers ,
  • each first coil support has a first coil and provides a first wire
  • each second coil support has a second coil and provides a second wire.
  • the rotary braiding machine is configured to intertwine the first and second wires.
  • at least one first coil carrier is arranged so that at least one second wire can move around completely around the at least one first coil carrier. At least the first coil carriers can be guided along at least one closed guideway surrounding the braiding axis.
  • the surface of the at least one closed guideway is designed as a toothed rim and that at least one toothed wheel is rotatably mounted on the at least one first reel carrier, which meshes with the toothed rim and constantly, in particular also during a movement of the least - -
  • gear and sprocket are understood in a conventional manner as a wheel or a closed, but not necessarily circular path, which is provided on its circumference or which in its direction of extension alternately with teeth and tooth gaps, wherein the gear with the sprocket is engageable and can roll on the sprocket.
  • the first coil carrier moves by means of the rolling movement of the gear on the sprocket quasi-continuously, d. H. practically uniform and at a constant speed, in particular without jerks or other short-term accelerations, along the guideway continued.
  • the gears and the at least one sprocket may preferably be made of metal or plastic.
  • the latter allows dry running with minimum quantity lubrication or even without lubrication.
  • a Ver ⁇ lung the rotary braiding machine due to thrown off oil droplets and any contamination of the product to be produced is avoided.
  • contamination may even be inadmissible.
  • appropriate countermeasures against oil contamination such as oil trap trays are superfluous.
  • the uniform rolling movement of the gears on the sprocket also does not lead to excessive heating of the guides of the first coil carrier or the guideway, so that complex measures for temperature monitoring and overheating protection of these machine components are superfluous.
  • teeth gaps The spaces between adjacent teeth of the ring gear and the gear are hereinafter referred to as "tooth gaps”.
  • a second wire may dip into a tooth gap between two adjacent teeth of the ring gear while a first coil carrier moves past it with a gear.
  • the surface of the at least one closed guideway has at least one extending substantially transversely to the direction of extension of the guideway through recess which is deeper than the tooth spaces of the ring gear, wherein the at least one second wire during a movement of the little - At least a second wire around the at least one first coil support temporarily immersed in the at least one recess.
  • Such a depression is preferably formed as a depression of a tooth gap of the at least one toothed ring.
  • a recess is provided for every other wire.
  • a device is attached to the at least one first coil carrier in the region of the toothed wheel which prevents the coil carrier from an axial displacement in at least one direction.
  • This device preferably has the form of a disc, which is preferably mounted parallel and coaxial with the gear on the first bobbin and whose diameter is greater than the inner gear diameter, d. H. The distance from the center of the gear to the deepest points of his tooth gaps. As a result, the disc can not move past the toothed ring meshing with the toothed wheel in the axial direction of the toothed wheel, whereby the first coil carrier is prevented from axial displacement in this direction.
  • the diameter of the disc is so small that the space provided for the passage of the second wire cavity, for example, the lowest point of a tooth gap in the ring gear or a recess in the guideway is not obscured by the disc and thus the disc not the second wire touched when the first bobbin moves past this.
  • the disc can also have a larger diameter than said and additionally have at its outer edge at least one recess through which the second wire can be guided when the first coil carrier moves past this.
  • the positioning of the first bobbin and the rotational movement of the gear must be synchronized such that such a recess on the disc in the - -
  • two adjacent gears may be mounted on the first bobbin, both of which mesh with the same ring gear, or two gears on both sides of the first bobbin, each meshing with a ring gear.
  • the first coil support is stably supported at two or at four points of contact with the ring gear or the sprockets and can no longer perform any unintentional rotational movements about its own axis.
  • all gears are constantly engaged with the respective sprocket.
  • the two sprockets and also the two gears each have the same number of teeth. Furthermore, the two gears are through a - -
  • the rotational speed synchronization can preferably also take place via a countershaft arranged parallel to the axis of the two gears, which is preferably coupled via two further, smaller gears meshing with the two gear wheels , The fact that the two gears have the same speed, the first bobbin is always aligned radially, and the gears can not tilt in the respective ring gear.
  • a gear and a device are attached to opposite ends of the at least one first coil carrier, which prevents the coil carrier at an axial displacement in at least one direction.
  • the latter Verschiebe Anlagensvor- direction which is preferably formed as already described above, then replaces one of the gears in the embodiment described above with two gears.
  • the corresponding sprocket is preferably replaced by a guideway with a smooth surface on which the sliding safety device can roll.
  • the first bobbin carriers move on a surface which is convex, in particular cylindrical, conical or frustoconical, viewed from the first bobbin carriers.
  • the convex surface may be a flat disc as a special case.
  • an axis of the surface coincides with the braiding axis of the rotary braiding machine.
  • the at least one closed guideway is circular and arranged in a plane perpendicular to the braiding axis.
  • the surface of the guideway can - at- - -
  • the shape of the surface - include a non-zero angle with this plane.
  • the convex surface is preferably the outer surface of a corresponding body, in particular a cylinder, cone or truncated cone.
  • the first coil carriers can preferably also move on a surface which is concave, in particular cylindrical, conical or frustoconical, viewed from the first coil carriers, the further embodiments of this embodiment corresponding to those described above for a convex surface.
  • the concave surface is preferably the inner surface of a corresponding body, in particular a hollow cylinder, cone or truncated cone.
  • Both said arrangements for the movements of the first coil carrier, in particular on a conical or frusto-conical surface, have the advantage that the first coil carrier is thereby arranged at the same angle relative to the braiding axis, in which the first wires should impinge on the braiding axis. A further deflection of the first wires is thereby superfluous.
  • the drive of the second coil carriers is preferably realized in the same way as in the conventional rotary braiding machine described above, namely by a rigid connection between the second coil carriers and the circulating guideway.
  • first bobbins can not be rigidly connected to other machine parts to be driven by them since this rigid connection would collide with the second wires upon complete movement of a second wire about a first bobbin.
  • the drive of the first coil support is preferably realized as well as in a conventional rotary braiding machine, namely by touching machine elements.
  • the rotational movement of at least one first bobbin about the braiding axis is generated without contact by drive means arranged outside the at least one first bobbin carrier.
  • both the drive means and the at least one first coil support preferably each have at least one magnet, in particular a permanent magnet or an electromagnet.
  • the drive of the at least one first coil carrier is then carried out by a magnetic, non-contact coupling between the magnet in the drive means and the magnet in the first coil carrier over an air gap. Through this air gap, the second wire can then be guided when it moves around the first bobbin.
  • the said air gap between the surface in which the guideway runs, and the at least one first coil carrier is formed in this case preferably in that the at least one gear of the first coil carrier has a larger diameter than the remaining arranged in the coil carrier components or as a Any housing of the first bobbin, whereby these components or this housing from the surface on which the guide track is arranged and on which the gear moves, is spaced, wherein the gear is supported on the guide track.
  • the first coil carrier could be repelled by magnets arranged in the first coil carrier and below the surface of the guideway, ie by a magnet - -
  • the drive means comprise a plurality of fixed electromagnets arranged on a closed path around the braiding axis, in which a circulating magnetic field can be generated, which entrains the at least one first coil carrier by magnetic coupling and causes it to rotate about the braiding axis.
  • the drive of the at least one first coil carrier is thus similar to a linear motor with an annular track or similar to a synchronous machine with a fixed, a plurality of windings having stator.
  • the drive means on any moving parts, whereby the drive means are largely maintenance-free.
  • the drive means may preferably also comprise at least one magnet, in particular a permanent magnet or electromagnet, which can move around the braiding axis in a closed path, whereby a circulating magnetic field can be generated, which entrains the at least one first coil carrier by magnetic coupling and in the rotational movement is offset around the braiding axis.
  • the at least one magnet in the drive means is preferably arranged on a rotatable rotor and generates a rotor-fixed field, which rotates with the rotor and thereby the - -
  • At least one magnet in the drive means and at least one magnet in the at least one first coil carrier are arranged to prevent the at least one first coil carrier from axial displacement in at least one direction.
  • the magnets involved are preferably arranged such that upon a displacement of the first coil carrier in the axial direction Magneti- see restoring forces are also generated in the axial direction, which cause a return of the first bobbin in its, for example, with respect to the guideway, starting position.
  • This variant may represent an alternative to the above-mentioned, preferably disk-shaped device in the region of the toothed wheel, which is likewise intended to prevent the first coil carrier from an axial displacement in at least one direction.
  • the magnets for preventing an axial displacement of the at least one first coil carrier are preferably at least partially identical to the magnets which serve to drive the at least one first coil carrier.
  • different magnets can be provided to prevent axial displacement or to drive the at least one first coil carrier.
  • the rotational movement of the at least one first coil carrier about the braiding axis can however also be generated by drive means arranged inside the first coil carrier, in particular by at least one electric motor.
  • the first bobbins move "autonomously" on the guideway, ie without the influence of external drive forces.
  • the energy required for the operation of the electric motor for example, by a likewise within the first - -
  • Spool carrier arranged, preferably rechargeable battery can be provided.
  • the charging or the replacement of the battery can then take place at the same time with the replacement of an empty against a full first coil in the first bobbin when the rotary braiding machine has to stand still anyway.
  • the energy required to operate the electric motor can also be transmitted contactlessly, preferably inductively, from a stationary power supply unit to the at least one first coil carrier, preferably for directly supplying the electric motor or charging a rechargeable battery arranged inside the first coil carrier.
  • control of the electric motor in the at least one first coil carrier can be carried out wirelessly, preferably by near field communication or by a radio link, from a stationary control unit. In this way, a simple common control of the movement of all first coil carrier and thus in particular a synchronization of their speeds, possible.
  • the invention further provides a method for operating a rotary braiding machine according to the invention, in which the first coil carriers rotate around the braiding axis during braiding and the second coil carriers execute a relative movement with respect to the first coil carriers, wherein at least one first coil carrier is arranged such that at least one second wire can move completely around the at least one first coil carrier, and wherein at least the first coil carriers are guided along at least one closed guideway, wherein the at least one second wire moves around the at least one first coil carrier, the gear of at least a first bobbin meshes with the ring gear while it is constantly engaged with the sprocket. - -
  • FIG. 1 shows a perspective view obliquely from above of an embodiment of a rotary braiding machine according to the invention
  • FIG. 2 shows a vertical section through the rotary braiding machine in the embodiment according to FIG. 1;
  • FIG. 3 shows a detailed view of FIG. 2 with a vertical section through a first coil carrier
  • FIG. 4 shows a drive arrangement for a first coil carrier with representation of the toothing in an embodiment as an external rotor
  • 5 shows a drive arrangement for a first coil carrier with representation of the participating magnets in an embodiment as an internal rotor; 6 shows a vertical section as in FIG. 3 with a magnetic holding device in the axial direction for the first coil carrier.
  • FIG. 1 and 2 show an embodiment of a rotary braiding machine 1 according to the invention in a perspective view obliquely from above or in a vertical section through the axis of symmetry of the rotary braiding machine 1, which corresponds to the braiding axis 14. It should be noted that, for reasons of clarity, various parts of the machine, in particular those which serve for the attachment of other parts, are not shown.
  • the substantially rotationally symmetrical constructed Rotationsflechtmaschine 1 is supported in the vertical direction by a support shaft 2, which is coaxial to the braiding 14 and which in turn is mounted on the front end on a (not shown) foundation at the lower end.
  • a bogie 3 is rigidly mounted, which is rotated via the support shaft 2 in rotation - -
  • the bogie 3 has substantially the geometric shape of a vertically arranged, upwardly tapered truncated cone. At the inner, upper edge and the outer, lower edge of the conical outer surface of this truncated cone two circumferential guideways in the form of an inner ring gear 6 and an outer ring gear 7 are mounted, the teeth of which protrude perpendicular to the surface of the truncated cone to the outside.
  • second bobbin 5 are circumferentially and at equal intervals attached to the bogie 3 (partially hidden, attachment to the bogie 3 not shown).
  • the second bobbin 5 thus rotate in the same direction and at the same speed as the bogie 3.
  • a second coil 51 is mounted, whose axis is horizontal and on which a second wire 1 1 is wound.
  • first bobbin 4 On the conical outer surface of the bogie 3 eight first bobbin 4 are also circumferentially arranged and at equal intervals, the axes of which point radially outwardly and approximately at the same angle as the conical surface of the bogie 3 down.
  • the first bobbin 4 have no firm connection to the other parts of the rotary braiding machine 1, in particular not to the bogie 3.
  • Each first bobbin 4 has at its inner edge a tangentially arranged inner gear 41 with seven teeth and at its outer edge to a coaxial, also tangentially arranged external gear 42 with 18 teeth.
  • other numbers of teeth and / or positions of the gears 41, 42 relative to the first bobbin 4 are possible.
  • the axes of the two gears 41, 42 are mounted in the side walls of a longitudinally U-shaped housing 44. Inside the housing 44, a first coil 43 is mounted, whose axis is horizontal and thus perpendicular to the axes - -
  • first wire 10 is wound on the first coil 43.
  • the first wire 10 is guided within the first bobbin 4 via different deflection rollers 45 and then exits the first bobbin 4 through an end bore in the housing 44 and through an axial bore in the inner gear 41.
  • the inner gear 41 hereby rolls on the inner ring gear 6 and the outer gear 42 on the outer ring gear 7.
  • Both the first wires 10 and the second wires 1 1 are guided approximately parallel to the conical outer surface of the bogie 3 up to a Fiechtkopf 8, at the lower end of which is located on the Flechtachse braiding 9 is where the interweaving of The first wires 10 with the second wires 1 1 and the braiding, for example, a hose is made, which is supplied to the rotary braiding machine 1 from a coil (not shown) from below.
  • the braid or the braided hose is guided upwards by the braiding head 8, withdrawn from the rotary braiding machine 1 by a take-off disk (not shown) and wound onto a reel (also not shown).
  • the second wires 11 can move around the first bobbin 4, every second wire 1 1 is passed after unwinding of the second coil 51 via a movable up and down thread lever 12 and at its end by a guide roller 13 in the direction of the braiding 8 led.
  • the first bobbin 4 can move under the second wire 1 1 therethrough.
  • the second wire 1 1 in a recess 71 in a tooth space of the outer ring gear 7 and in a corresponding recess 61 in a tooth gap of the inner ring gear 6 dive, which for each second wire 1 1 to each on the same Radius of the bogie 3 lying - -
  • Positions are placed on the circumference of the two sprockets. Once the second wire 1 1 is immersed in two recesses 61, 71, the first bobbin 4 can move over the second wire 11 without touching it. By this movement, the crossing of the first wires 10 with the second wires 1 1, which is the prerequisite for the formation of a braid on the braiding 8 takes place.
  • the drive of the first coil carrier 4 takes place in an electromagnetic manner.
  • a likewise rotatable about the braiding 14 rotor 22 is disposed on which in radially outward, downward direction a plurality of magnets, preferably permanent magnets or electromagnets 16 is mounted.
  • the rotor 22 is supported by ball bearings 18 on the outside of the support shaft 2 and connected to a braiding axis, also outside of the support shaft 2 by ball bearings 18 mounted drive shaft 23 with a ring gear 19 which is parallel to the ring gear 20 and facing it.
  • a stationary gear 21 is arranged, which meshes with both sprockets 19, 20 and (not shown) by an electric motor and a gearbox is driven. This will do that - -
  • Bogie 3 and the rotor 22 at the same speed, but driven in the opposite direction.
  • a drive is represented by a rotor 22 in the sense of a linear motor by means of a rotor 22.
  • a first bobbin 4 and its storage on the bogie 3 is shown in an enlarged sectional view. It can be seen that by the support of the inner gear 41 on the inner ring gear 6 and the outer gear 42 on the outer ring gear 7 between the housing 44 of the first bobbin 4 and the bogie 3, an air gap 17 (in the embodiment with a height of approx 2 mm) is formed, through which the second wire 1 1, as described above, can be performed.
  • a disc-shaped permanent magnet 15 is inserted, the north pole N and the south pole S are aligned perpendicular to the conical surface of the bogie 3.
  • electromagnets 16 are arranged circumferentially on the circumference at regular intervals.
  • the representation of the permanent magnet 15 and the electromagnet 16 in Fig. 3 is only to be understood schematically.
  • magnet systems with hard and soft magnetic sections and / or with a greater extent in the axial direction of the first coil carrier 4 than shown in FIG. 3 can be used instead of the permanent magnet 15.
  • the electromagnets 16 form the travel path of a linear motor which simultaneously puts all the first coil carriers 4 into the rotary motion as carriages.
  • a circulating magnetic field is generated in the bogie 3 by appropriate energization of the electromagnet 16, which carries the first coil support 4 by magnetic coupling.
  • the trajectory of the second wire 1 1 above or below the first bobbin 4 and thus to the outer gear 42 around is also indicated schematically by two dash-dotted lines.
  • the periodically arranged depressions 71 can be seen in individual tooth gaps of the outer toothed rim 7, into which the second wire 1 1 can dip.
  • six electromagnetic coils 16 can be seen, which form a section of the travel of the linear motor for driving the first bobbin 4. Due to the arrangement of the outer ring gear 7 on the conical outer surface of the bogie 3, the linear motor is designed as an external rotor motor.
  • the bogie 3 has the shape of a hollow, vertically arranged cylinder stub, which tapers towards the top.
  • the supply and removal of the material to be braided or the braid is made from bottom to top.
  • the first bobbin 4 are in this case inwardly, downwardly inclined on the inner, conical - -
  • the linear motor is designed as an internal rotor motor.
  • FIG. 5 particularly shows the detail of the arrangement of the magnets in the first coil carrier 4 and in the travel path of the linear motor in the bogie 3.
  • a plurality of ribs are circumferentially arranged, which are individually wound with conductor wires to form coils of elongated cross-section.
  • the first coil support 4 shown here only as a dashed line through its circumference
  • a permanent-magnetic arrangement is mounted on its edge opposite the bogie 3, which in this case has a horseshoe shape.
  • For the magnetic coupling between the first bobbin 4 and the electromagnet 16 in the bogie 3 are therefore not only, as in Fig. 3, a pair of magnetic poles, but two such pairs over, resulting in much stronger magnetic attraction forces.
  • the compact, closed course of the field lines of the resulting magnetic coupling is also indicated in FIG.
  • an air gap 17 is formed through which the second wires 1 1 can be performed.
  • a magnetic holding device is shown, by means of which a first bobbin 4 against slipping outwards, downwards or inwards, can be secured down.
  • the magnetic holding device is formed by two identically constructed, horseshoe-shaped arrangements of permanent magnets 15 in the first bobbin 4 and below the surface of the bogie 3, which respectively correspond to the horseshoe-shaped magnet arrangement of FIG. 5 and which are magnetically coupled together.
  • the arranged in the bogie 3 magnetic arrangement rotates synchronously with the first bobbin 4. This can be most easily realized when the magnets in the bogie 3 do not form a fixed path of a linear motor, but are arranged on a rotating rotor 22 as in FIGS. 1 and 2. Since the magnets in the bogie 3 in this case does not have to be periodically switched on and off, permanent magnets 15 can again be used for this purpose.
  • the illustrated in Fig. 6, arranged on a rotatable rotor 22 magnetic arrangement of permanent magnets 15 then simultaneously assumes the function of Rotationsan- drive for the first bobbin 4 and the holding function against slipping of the first bobbin 4, resulting in a particularly simple construction ,

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
  • Detergent Compositions (AREA)
  • Looms (AREA)

Abstract

L'invention concerne un métier à tresser rotatif (1) comportant un axe de tressage (14) pour tresser du matériau en forme de faisceau, notamment du fil, des fibres de carbone ou textiles. Le métier à tresser rotatif (1) comprend une pluralité de premiers et de deuxièmes porte-bobines (4) qui tournent de préférence en sens inverse autour de l'axe de tressage (14). Le métier à tresser rotatif (1) est conçu pour entrelacer des premiers et deuxièmes faisceaux (10,11) de premières et deuxièmes bobines (43, 51) disposées sur les premiers et deuxièmes porte-bobines (4,5). Les premiers porte-bobines (4) sont agencés de façon que les deuxièmes faisceaux (11) puissent se déplacer tout autour d'eux. De plus, les premiers porte-bobines (4) sont guidés le long d'une voie de guidage fermée tournant autour de l'axe de tressage (14). Selon l'invention, la surface de la ou des voies de guidage fermées est une couronne dentée (6,7), et sur chaque premier porte-bobine (4) est respectivement montée rotative au moins une roue dentée (41,42) qui engrène la couronne dentée (6,7) et qui est en prise permanente avec la couronne dentée (6,7), notamment pendant un déplacement du deuxième faisceau (11) autour des premiers porte-bobines (4). Le deuxième faisceau (11) plonge alors de préférence dans un évidement (71) situé dans un entredent de la couronne dentée (6,7) pendant que le premier porte-bobine (4) passe près de lui.
EP13807935.5A 2012-12-28 2013-12-10 Métier à tresser rotatif Not-in-force EP2938767B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012025302.8A DE102012025302A1 (de) 2012-12-28 2012-12-28 Rotationsflechtmaschine
PCT/EP2013/003731 WO2014101982A1 (fr) 2012-12-28 2013-12-10 Métier à tresser rotatif

Publications (2)

Publication Number Publication Date
EP2938767A1 true EP2938767A1 (fr) 2015-11-04
EP2938767B1 EP2938767B1 (fr) 2017-02-15

Family

ID=49779849

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13807935.5A Not-in-force EP2938767B1 (fr) 2012-12-28 2013-12-10 Métier à tresser rotatif

Country Status (10)

Country Link
US (1) US20150299916A1 (fr)
EP (1) EP2938767B1 (fr)
JP (1) JP2016506457A (fr)
CN (1) CN104903504A (fr)
BR (1) BR112015007681A2 (fr)
DE (1) DE102012025302A1 (fr)
HU (1) HUE031708T2 (fr)
MX (1) MX344632B (fr)
RU (1) RU2015116269A (fr)
WO (1) WO2014101982A1 (fr)

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Also Published As

Publication number Publication date
JP2016506457A (ja) 2016-03-03
BR112015007681A2 (pt) 2017-07-04
RU2015116269A (ru) 2017-02-02
WO2014101982A1 (fr) 2014-07-03
CN104903504A (zh) 2015-09-09
MX344632B (es) 2017-01-04
DE102012025302A1 (de) 2014-07-03
MX2015008203A (es) 2015-09-16
US20150299916A1 (en) 2015-10-22
EP2938767B1 (fr) 2017-02-15
HUE031708T2 (en) 2017-07-28

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