JP2016506457A - Rotary braiding machine - Google Patents

Abstract

The present invention relates to a rotary braiding machine 1 having a braided axis 14 that braids cord-like material into a braided article. The rotary braided machine 1 rotates in the opposite directions around the braided axis 14. It has bobbin carriers 4 and 5. The rotary braiding machine 1 knits the first and second ropes 10 and 11 prepared by the first and second bobbins 43 and 51 on the bobbin carriers 4 and 5. The bobbin carrier 4 is provided so that the second cord 11 rotates completely around the bobbin carrier 4. The bobbin carrier 4 is guided along a closed guide path around the braid axis 14. The surface of the closed guide path is formed as a gear ring 6, 7, and gears 41, 42 are rotatably mounted on the bobbin carrier 4, and the gear meshes with the gear rings 6, 7, and in particular always the second While the cable 11 is moving around the bobbin carrier 4, it engages with the gear ring. The second cord 11 enters the recess 71 in the tooth space of the gear rings 6 and 7 while the bobbin carrier 4 moves through the second cord.

Description

  The entire contents of Patent Document 1 which is a priority application become a part constituting the present application by being referred to herein.

  The present invention relates to a rotary braiding machine for braiding a cord-like material, in particular a wire or woven fiber, carbon fiber or other cord-like carbon material into a braid.

  Such rotary braiding machines are flat for producing hollow tubular braids made of cord-like material, for example metal wires, yarns or plastic fibres, or by rolling such tubular braids later. For example, by braiding carbon fibers or other cord-like carbon materials, for example for braiding a cable with a wire braid, for example, or for light weight designs Used for manufacturing. Application areas for technical braids produced in this way are, for example, shielding of electrical cables against electromagnetic fields, or protective coatings against mechanical stress for cables or tubes. A further application is the production of medical braids for vascular implants such as stents, artificial blood vessels and the like.

  The invention will be described by way of example of a rotary braiding machine for wires as cord-like material to be braided, i.e. a rotary braiding machine for producing wire braids. However, this is not a limitation. That is, the present invention can be used for a rotary braiding machine for processing any other cord-like material.

  The type of rotary braiding machine to be considered has a plurality of bobbins, each of which is provided on a bobbin carrier. At this time, the bobbin is preferably a cylindrical object for winding the wire to be braided, and preferably has two flanges provided at the ends of the cylindrical object and having a diameter larger than the diameter of the bobbin body. doing. A bobbin carrier is a device that can be received therein, preferably with the bobbin mounted rotatably about the longitudinal axis of the bobbin.

  The rotary braiding machine considered in connection with the present invention is a so-called high speed lever type braiding machine.

  A rotary braiding machine has a braiding axis, i.e. a geometric axis, and the braid to be produced is formed in the direction of the braiding axis and is pulled out of the machine, for example via a pulling disc, and in some cases around The material to be braided is also fed to the machine in the direction of the braid axis. The braided axis is preferably provided horizontally, vertically or inclined, preferably inclined 45 °. In the following, the present invention will be described as an example of a rotary braiding machine having a braided axis provided vertically, but it can be equally used for a rotary machine provided with different braiding axes.

  The rotary braiding machine has a plurality of first bobbin carriers that can rotate around a braiding axis, and a plurality of second bobbin carriers that can perform relative movement with respect to the first bobbin carrier. . At least the first bobbin carrier is then guided around the braided axis along the closed guide path. In this case, the guide path is understood to be a curve that the first bobbin carrier generally follows during movement, and the first bobbin carrier does not necessarily have to be on and / or in contact with the curve. The guide path is formed, for example, as a circular rail, forms a slide bearing path or a roller bearing path, a first bobbin carrier is attached to the slide bearing path or the roller bearing path, and a slide guide is used. And / or roller bearings to be slidable.

  In a typical embodiment of such a rotary braiding machine, for example 6 or 12 first bobbin carriers rotate on a circular guide path and a braid axis is provided through the center of the guide path. It has been. Six or twelve second bobbin carriers likewise rotate around the braid axis, preferably at the same rotational speed as the first bobbin carrier, but in the opposite direction to the first bobbin carrier. At this time, the second bobbin carrier is attached so that the second bobbin carrier can rotate around the braided axis.

  Each first bobbin carrier prepares a first wire rope, which is wound continuously by a first bobbin mounted in the individual first bobbin carrier, Or pulled out. Correspondingly, each second bobbin carrier prepares a second wire rope, which is continuously connected by a second bobbin mounted in the individual second bobbin carrier. Rolled up or pulled out.

  Is the first wire and the second wire provided at a predetermined angle in a spiral path so that they are guided inward to the braided axis, where the bobbin carrier rotates and at the same time the braided material is pulled out? Or around the material to be braided around, the first wire is knitted with the second wire.

  In this regard, the first wire and the second wire must be crossed according to a predetermined pattern. That is, the first wire and the second wire need to be provided above or below the other wires, respectively. For example, each two adjacent second wires are first guided over two adjacent first wires and then guided under the next two adjacent first wires. (Two cross-type braided joints, so-called two-dive over two braided joints). Correspondingly, for example, the individual second wires are guided by passing alternately over one first wire and under one first wire (so-called one-dive over one braided connection). It is also possible. The region where the intersecting first wire and second wire contact the braided axis is also referred to as a braided point.

  The crossing of the first wire and the second wire is performed around the corresponding first bobbin carrier and with the corresponding first wire, depending on the desired crossing pattern of the second wire periodically. This is realized by moving around. In the lever-type braiding machine considered in the present application, the above point is that each second wire is raised and lowered via a movable so-called yarn lever attached to a corresponding second bobbin carrier. Is done by being able to. The second wire considered thereby can be guided over the first bobbin carrier moving in the opposite direction, or it can be guided under the first bobbin carrier, This establishes that the first wire and the second wire intersect correspondingly with the second wire above or below.

  By guiding the second wire through the thread lever, all the second bobbin carriers, the second bobbin mounted in the second bobbin carrier, and the second bobbin are wound. The provided second wire avoids that all second bobbin carriers that may have a substantial mass have to be raised or lowered as a whole.

  For the above movement process, it is necessary that the individual second wires can move completely around the individual first bobbin carriers. Since the second wire is always guided towards the braiding point, a virtual approximate conical surface is created for this movement around the first bobbin carrier.

  The second wire moves around the first bobbin carrier so that it is a closed guide path on which the first bobbin carrier rotates about the braided axis. The support of one bobbin carrier must be interrupted at least temporarily and / or at least partly so that the first bobbin carrier and the second wire at the point are connected to the first bobbin carrier And the path of the second wire can be crossed. In the exemplary embodiment of the rotary braiding machine considered, the above point is that the second wire is guided under the first bobbin carrier, i.e. the second wire is the first bobbin. This is accomplished by "submitting and passing" under the carrier.

  For the above purpose, the closed guide path for the first bobbin carrier is provided with, for example, vertical and slit-like gaps for each second wire, Second wire can enter, followed by movement of the first bobbin carrier over the lowered second wire. Such a gap is provided at a position where the second wire is to be lowered by using a yarn lever provided to the second wire, with a uniform interval on the entire outer periphery of the guide path. . Since the second bobbin carrier is fixedly coupled to the guide path, each individual second wire can accurately enter the gap in the guide path provided for the second wire, There is no need to consider relative movement in the circumferential direction between the second wire and the gap in the guide path.

  By periodically interrupting the guide path by the gap, in the conventional rotary braiding machine, the sliding guide or rolling guide of the first bobbin carrier must always be moved over the gap. The problem arises. At this time, the guide needs to leave the guide path at the start of each gap and “enter” the guide path again at the end of the gap.

  As a result, particularly when the rotational speed is relatively large and the relative speed between the first bobbin carrier and the guide path is relatively large, wear of the guide and the guide path is increased, vibration and vibration are induced, and the rotary braiding machine Increased noise generation causes problems.

German Patent Application No. 102012025302.8

  The object of the present invention is therefore to create an improved rotary braiding machine with an improved guide of the first bobbin carrier in particular along the guide path.

  The problem is solved by the rotary braiding machine according to claim 1 and the method according to claim 13 for operating the rotary braiding machine. Further advantageous configurations of the rotary braiding machine according to the invention are contained in the dependent claims.

  The present invention is based on a rotary braiding machine having a braiding axis for braiding a wire into a wire braid, and the rotary braiding machine includes a plurality of first bobbins that can rotate around the braiding axis. The carrier has a plurality of second bobbin carriers that can be moved relative to the first bobbin carrier. At this time, each first bobbin carrier has a first bobbin and a first wire is prepared, and each second bobbin carrier has a second bobbin and a second wire is prepared. The rotary braiding machine is configured to knit the first wire and the second wire. Furthermore, the at least one first bobbin carrier is provided such that the at least one second wire can move completely around the at least one first bobbin carrier. At least the first bobbin carrier may be guided along at least one closed guide path that rotates about the braid axis.

  In such a rotary braiding machine according to the present invention, the surface of at least one closed guide path is formed as a gear ring, and at least one gear is rotatably attached to at least one first bobbin carrier. The gear meshes with the gear ring and is constantly engaged with the gear ring, especially during the time when at least one second wire moves around the at least one first bobbin carrier. Yes.

  The concept of “gear” and “gear ring” is usually understood to be a wheel or a closed but not necessarily circular path, with teeth and tooth spaces on the outer circumference of the wheel or in the direction of extension of the path. Alternatingly provided, the gears can engage the gear ring and roll on the gear ring.

  This allows the first bobbin carrier to use quasi-continuous, i.e. actually uniform and constant speed, in particular without jerk or other short-term acceleration, using the rolling movement of the gear on the gear ring. Continue to move along the guide path. This largely avoids the above-mentioned problems relating to wear, wobbling, vibration and noise generation due to the guide constantly leaving the guide path or re-entering the guide path. The meshing of the gear and the gear ring has been greatly developed by using special tooth formation such as involute tooth formation, for example, to enable the above-described quasi-continuous movement. In this way, a higher rotational speed of the first bobbin carrier and a greater productivity of the rotary braiding machine are possible with it.

  The gear and the at least one gear ring are preferably made of metal or plastic. Plastic allows dry operation with minimal or no lubrication. This avoids refueling of the rotary braiding machine based on the centrifuged oil droplets and, in some cases, fouling the product to be manufactured. Such contamination can even be unacceptable, especially in certain products with high quality requirements, such as medical technology products. In addition, it is not necessary to take appropriate measures against oil supply such as an oil catching plate.

  The uniform rolling movement of the gear on the gear ring also does not result in the first bobbin carrier guide or guide path being overheated, thereby monitoring temperature and overheating protection of these mechanical components. The costly means is not necessary.

  The gap between adjacent teeth of a gear ring or gear is hereinafter referred to as “tooth gap”.

  In the above configuration, the second wire enters the tooth space between two adjacent teeth of the gear ring, while the first bobbin carrier moves through the second wire by the gear. When the teeth are reasonably large in size compared to the diameter of the second wire, i.e., especially when the teeth are large and the second wire is thin, the second wire and There is no contact with the gear teeth rolling over the second wire. When using normal tooth formation, the tooth does not contact the deepest part of the tooth gap in the gear ring, so that the deepest part of the tooth groove is always provided across the extending direction of the gear ring. This is because a continuous hollow space remains and the second wire can be guided through the hollow space. At the same time, the gear is constantly engaged with the gear ring and does not need to leave the gear ring and enter the gear ring again.

  In a particularly preferred practice of the invention, the surface of the at least one closed guide path has at least one continuous recess provided generally across the direction of extension of the guide path, the recess Deeper than the tooth space of the gear ring, the at least one second wire is at least temporarily while the at least one second wire moves around the at least one first bobbin carrier. Enter one recess.

  Such a recess is preferably formed as a recess in the tooth space of at least one gear ring. Thereby, there is no change with respect to the rolling movement of the gear on the gear ring, which further allows a quasi-continuous movement of the first bobbin carrier on the guide path. Such recesses are preferably provided for the individual second wires.

  In a further preferred implementation of the invention, at least one first bobbin carrier is fitted with a device in the region of the gear that prevents the bobbin carrier from moving in at least one direction in the axial direction. The device preferably has the shape of a disk, which is preferably mounted on the first bobbin carrier parallel and coaxial to the gear, the diameter of the disk being the inner diameter of the gear, i.e. the gear. Greater than the distance from the center of the gear to the deepest point of the tooth gap of the gear. This prevents the disc from passing through the gear ring engaged with the gear in the axial direction of the gear, thereby preventing the first bobbin carrier from moving in the axial direction in that direction.

  However, the diameter of the disk is preferably so small that the hollow space provided for penetrating the second wire, e.g. the deepest part of the tooth space in the gear ring, or the recess in the guide path is not shielded by the disk, Thereby, the disc does not contact the second wire when the first bobbin carrier passes through the second wire.

  More preferably, the disk may have a diameter larger than the above-mentioned diameter, and may further have at least one air gap at the outer edge of the disk, and the second wire passes through the air gap through the first wire. As the bobbin carrier passes through the second wire, it can be guided. For this purpose, the arrangement of the first bobbin carrier and the rotational movement of the gears must be synchronized, so that such a gap in the disk is not necessary for the gears on the guide path to penetrate the second wire. At the moment immediately above the provided hollow space, it faces the gear ring.

  In a further preferred implementation of the invention, the at least one first bobbin carrier has two gears that are coaxially or substantially coaxially rotatable at opposite ends of the first bobbin carrier. It is attached. In this case, two closed guide paths, which are formed as gear rings, are also preferably provided, the guide paths being coaxial with the braided axis, but not necessarily in the same plane. Not in. Thereby, the first bobbin carrier is supported at two opposite ends with respect to the two guide paths, thereby being protected against tilting in the axial direction.

  On the other hand, in this configuration, the first bobbin carrier can be rotated unintentionally around the axis of the first bobbin carrier, particularly torsional vibration. However, this unintended rotational movement is largely avoided by a suitable configuration of the elements inside the first bobbin carrier, preferably by a suitable position of the center of gravity and / or by using a permanent magnet.

  Alternatively, two adjacent gears may be attached to the first bobbin carrier, the two gears meshing with the same gear ring, or two on each side of the first bobbin carrier. There are two gears, and each of the two gears meshes with one gear ring. Accordingly, the first bobbin carrier is stably supported by a single gear ring or a plurality of gear rings at two or four contact points, and performs unintentional rotational movement around the axis of the first bobbin carrier itself. Things will disappear. Even in this embodiment variant, all gears are permanently engaged with individual gear rings.

  Preferably, the two gear rings and the two gears each have the same number of teeth. Furthermore, the two gears are coupled via a common shaft, if necessary, with an adjustment device for the possible angular deviation between the axes of the two gears, so that they are synchronized with respect to the rotational speed. If the configuration of the remaining components in the first bobbin carrier does not allow such a continuous shaft, the rotational speed synchronization preferably has a countershaft provided parallel to the axis of the two gears. The countershaft is preferably connected via two relatively small further gears which mesh with the two gears. Because the two gears have the same rotational speed, the first bobbin carrier is always directed radially and the gears do not tilt in the individual gear rings.

  In a further preferred implementation of the invention, gears and a device for preventing the bobbin carrier from moving in at least one direction in the axial direction are mounted at opposite ends of the at least one first bobbin carrier. . In that case, the movement protection device, preferably formed as described above, replaces one of the gears in the above implementation having two gears. Furthermore, the corresponding gear ring is preferably replaced by a guide path having a flat surface, on which the movement protection device can roll.

  In a further preferred implementation of the invention, the first bobbin carrier moves on a convex, in particular cylindrical, conical or frusto-conical surface when viewed from the first bobbin carrier. However, the convex surface can be a flat disk in special cases.

  At this time, the axis of the surface, in particular the axis of symmetry of the cylinder, cone or frustum, coincides with the braiding axis of the rotary braiding machine. Preferably, the at least one closed guide path is circular and is provided in a plane perpendicular to the braid axis. However, at this time, the surface of the guide path may include an angle different from zero, for example, depending on the shape of the surface along with the plane.

  The convex surface is preferably the outer surface of a corresponding object, in particular a cylinder, a cone or a truncated cone.

  Preferably, the first bobbin carrier may move on a concave surface, in particular a cylindrical, conical or frustoconical surface as viewed from the first bobbin carrier, further configurations of the implementation being convex Consistent with the above configuration described in terms of surfaces.

  The concave surface is preferably the inner surface of a corresponding object, in particular a hollow cylinder, a cone or a truncated cone.

  In particular, the configuration described above for the movement of the first bobbin carrier on a conical or frustoconical surface is such that the first bobbin carrier is thereby at the same angle as the angle at which the first wire should strike the braid axis. It has the advantage of being provided. This eliminates the need for further turning of the first wire.

  The driving of the second bobbin carrier is preferably realized in the same way as in the case of the above-mentioned conventional rotary braiding machine, that is, by the rigid connection between the second bobbin carrier and the rotating guide path.

  On the other hand, the first bobbin carrier cannot be rigidly connected to the further mechanical member and to be driven by the additional mechanical member. The rigid connection is because the second wire may collide with the second wire as it moves completely around the first bobbin carrier.

  The driving of the first bobbin carrier is also preferably realized in the same way as in conventional rotary braiding machines, i.e. by mechanical elements that are in contact with each other.

  However, in a particularly preferred implementation of the invention, the rotational movement of the at least one first bobbin carrier around the braided axis is effected in a non-contact manner by drive means provided outside the at least one first bobbin carrier. Produced is done.

  In this connection, preferably the drive means and the at least one first bobbin carrier each have at least one magnet, in particular a permanent magnet or an electromagnet. In that case, at least one first bobbin carrier is driven by a magnetic non-contact coupling between the magnet in the driving means and the magnet in the first bobbin carrier via a gap. In that case, the second wire can be guided through the gap as the second wire moves around the first bobbin carrier.

  The gap between the face provided with the guide path and the at least one first bobbin carrier is preferably in this case at least one gear of the first bobbin carrier is provided in the bobbin carrier It has a larger diameter than the remaining components or the housing of the first bobbin carrier that is optionally provided, so that the component or the housing is provided with a guide path and the gear moves. The gear is formed by being supported by the guide path.

  However, it is also conceivable to realize such a gap between the first bobbin carrier and the surface of the guide path by a method other than supporting the gear in the guide path. For example, the first bobbin carrier is formed by a repelling magnet provided in the first bobbin carrier and below the surface of the guide path, that is, by the buoyancy effect of the magnet, or by air flowing out of the surface of the guide path It is assumed that it is kept floating by the air cushion effect, thereby being separated from the surface of the guide path. In that case, the gear in the first bobbin carrier, the gear ring in the guide path, and the corresponding recess in the guide path for penetrating the second wire are all omitted. In this case, it is assumed that the first bobbin carrier does not contact the surface of the guide path at any point.

  Various variations are possible with respect to the above embodiment in which the rotational movement of the at least one first bobbin carrier about the braid axis is created by the magnets in the drive means and in the first bobbin carrier.

  The driving means preferably has a plurality of fixed electromagnets provided around the braided axis on a closed path, and can generate a magnetic field that circulates in the electromagnet, and the magnetic field is at least one. One first bobbin carrier is entrained by magnetic coupling to cause rotational movement about the braided axis. The drive of the at least one first bobbin carrier is thereby effected in the same way as in the case of a linear motor having a ring-shaped travel path or in the case of a synchronous machine with a stationary stator having a number of coils. . In this configuration, the drive means does not have any members to be moved, so that the drive means is generally unnecessary for maintenance.

  However, the drive means can comprise at least one magnet, in particular a permanent magnet or an electromagnet, which can move around the braided axis on a closed path and thereby generate a circulating magnetic field. The magnetic field entrains at least one first bobbin carrier by magnetic coupling and causes rotational movement about the braided axis. At least one magnet in the drive means is preferably provided on the rotatable rotor, creating a rotor-fixed field that rotates with the rotor, with at least one first bobbin carrier and Of the desired magnetic coupling.

  In a further preferred variant of this embodiment, at least one magnet in the drive means and at least one magnet in the at least one first bobbin carrier are such that at least one first bobbin carrier is in at least one direction. It is configured to prevent movement in the axial direction. For this purpose, the magnets involved are preferably provided such that when the first bobbin carrier moves in the axial direction, a magnetic restoring force is likewise produced in the axial direction. One bobbin carrier is returned to the starting position of the first bobbin carrier, eg centered with respect to the guide path. This variant can be an alternative to the device described above, preferably in the form of a disc, which should likewise prevent the first bobbin carrier from moving axially in at least one direction. .

  In this variant, the magnet for preventing axial movement of the at least one first bobbin carrier is preferably at least partly a magnet used for driving the at least one first bobbin carrier. Are the same. This saves additional magnets, and thus manufacturing costs. However, different magnets may be provided in order to prevent axial movement or to drive at least one first bobbin carrier.

  However, the rotational movement of the at least one first bobbin carrier about the braided axis can be carried out in the first bobbin carrier as an alternative to providing a magnet in the drive means and also in the at least one first bobbin carrier. It can also be generated by provided drive means, in particular by at least one electric motor. In this case, the first bobbin carrier moves “autonomously” on the guide path, that is, without the action of an external driving force. The energy required for the operation of the electric motor can be provided, for example, by a preferably rechargeable battery, also provided inside the first bobbin carrier. In that case, the charging or replacement of the battery can be performed simultaneously with the replacement of the empty bobbin on the first bobbin carrier and the full first bobbin when the rotary braiding machine must stop anyway. .

  However, the energy required for the operation of the electric motor is alternatively non-contact, preferably inductively, from the fixed energy supply unit to the at least one first bobbin carrier, preferably the electric motor. Can be communicated to provide a direct supply to or to charge a rechargeable battery provided within the first bobbin carrier.

  Similarly, the control of the electric motor in the at least one first bobbin carrier is performed from a stationary control unit wirelessly, preferably by short-range wireless communication or by wireless communication. In this way, the movement of all the first bobbin carriers can be easily controlled in common, so that in particular the speeds of all the first bobbin carriers can be synchronized.

  The present invention further comprises a method for operating the rotary braiding machine according to the present invention, wherein the first bobbin carrier rotates around the braid axis during braiding, and the second bobbin The carrier performs a relative movement with respect to the first bobbin carrier, and further, the at least one first bobbin carrier has at least one second wire completely routed around the at least one first bobbin carrier. At least a first bobbin carrier is guided along at least one closed guide path, and at least one second wire is provided on at least one first bobbin carrier. Moving around, the gear of the at least one first bobbin carrier meshes with the gear ring, where it is permanently engaged with the gear ring.

  Further advantageous embodiments of the invention are described in the following detailed description with reference to the accompanying drawings, which are partially outlined. The figure shows the following.

It is a figure which displays the embodiment of the rotary type braiding machine concerning the present invention in the perspective from diagonally upward. It is a figure which shows the vertical direction cross section of the rotary braiding machine in embodiment by FIG. FIG. 3 shows a detail of FIG. 2 by a vertical section of the first bobbin carrier. FIG. 6 shows a drive arrangement for a first bobbin carrier with an indication of tooth formation implemented as an external rotor. FIG. 5 shows a drive arrangement for a first bobbin carrier with an indication of the magnets involved implemented as an internal rotor. FIG. 4 shows a vertical section as in FIG. 3 with an axial magnetic holding device for the first bobbin carrier.

  1 and 2 show the implementation of the rotary braiding machine 1 according to the invention in a cross-section through the axis of symmetry of the rotary braiding machine 1 as seen obliquely from above, or coincident with the braiding axis 14. . It should be noted that for the sake of clarity, the various parts of the machine, in particular those used to secure other parts, are not shown.

  The rotary braiding machine 1 configured substantially rotationally symmetric is supported by the carrier shaft 2 in the vertical direction, the carrier shaft is coaxial with the braiding axis 14, and at the end face side at the lower end of the carrier shaft. It is supported by a foundation (not shown). A rotating frame 3 is firmly fixed to the carrier shaft 2, and the rotating frame can be rotated via the carrier shaft 2. The rotation of the carrier shaft 2 and the rotating frame 3 together with the carrier shaft 2 is performed via a gear ring 20 at the lower end of the carrier shaft 2.

  The rotating frame 3 is provided substantially vertically and has a tapered truncated cone shape upward. Two rotating guide paths in the form of an internal gear ring 6 and an external gear ring 7 are attached to the inner upper edge and the outer lower edge of the outer cone surface of the truncated cone, and the teeth of the gear ring are Projecting outwards perpendicular to the surface of the truncated cone.

  Below the rotating frame 3, eight second bobbin carriers 5 are fixed to the rotating frame 3 at equal distances on the circumference (partially concealed, fixed portions in the rotating frame 3 are fixed). Is not shown). Accordingly, the second bobbin carrier 5 rotates in the same direction as the rotating frame 3 at the same speed. A second bobbin 51 is supported on each second bobbin carrier 5, the axis of the second bobbin is provided in the horizontal direction, and the second wire 11 is attached to the second bobbin. It is wound.

  Eight first bobbin carriers 4 are similarly provided on the outer circumferential surface of the rotating frame 3 at equal distances on the circumference, and the axes of the first bobbin carriers are directed radially outward. And facing downwards at substantially the same angle as the conical surface of the rotating frame 3. The first bobbin carrier 4 has no fixed connection to the remaining members of the rotary braiding machine 1, in particular to the rotary frame 3.

  Each first bobbin carrier 4 has an internal gear 41 with seven teeth provided in a tangential direction at the inner edge of the first bobbin carrier, and the outside of the first bobbin carrier. At the edge of the outer gear 42 is provided with an outer gear 42 with eighteen teeth, coaxially with the inner gear, likewise tangentially. Of course, other numbers of teeth and / or positions of the gears 41, 42 relative to the first bobbin carrier 4 are also possible. The axes of the two gears 41, 42 are supported in the side wall of the U-shaped housing 44 in the longitudinal section. A first bobbin 43 is supported inside the housing 44, and the axis of the first bobbin is provided in the horizontal direction and thereby perpendicular to the axes of the gears 41, 42. Again, of course, other positions of the first bobbin 43 relative to the components of the first bobbin carrier 4 are possible. The first wire 10 is wound around the first bobbin 43. The first wire 10 is guided inside the first bobbin carrier 4 via different deflecting rollers 45, via a hole on the end face side in the housing 44, and via an axial hole in the internal gear 41. Exit from the first bobbin carrier 4.

  At this time, the internal gear 41 rolls on the internal gear ring 6, and the external gear 42 rolls on the external gear ring 7.

  Both the first wire 10 and the second wire 11 are guided upward to the braiding head 8 substantially parallel to the conical outer surface of the rotating frame 3, and the lower end of the braiding head has The braiding point 9 is provided at the braided point, and at the braided point, the first wire 10 and the second wire 11 are knitted or from the bobbin (not shown) to the rotary braiding machine 1. Braiding around the tube supplied from The braided body (mesh body) or the tube braided around is guided upward through the braided head 8 and pulled out from the rotary braiding machine 1 through a pull-out disk (not shown). (Not shown).

  The individual second wires 11 are wound up from the second bobbin 51 and then moved upward and downward so that the second wires 11 can move around the first bobbin carrier 4. Guided through the lever 12 and guided toward the braiding head 8 by the deflection roller 13 at the end of the yarn lever. At the highest position of the thread lever 12, the first bobbin carrier 4 can move under the second wire 11. In the lowest position of the thread lever 12, the second wire 11 can enter the recess 71 in the tooth groove of the external gear ring 7 and the corresponding recess 61 in the tooth groove of the internal gear ring 6, which recess is The individual second wires 11 are provided on the circumferences of the two gear rings at locations on the same diameter of the rotary frame 3. As soon as the second wire 11 enters the two recesses 61, 71, the first bobbin carrier 4 can move over the second wire 11 without contacting the second wire 11. By the movement process, the first wire 10 and the second wire 11 are crossed, and the crossing is a premise for the formation of the braided material in the braided head 8.

  The first bobbin carrier 4 is driven by an electromagnetic method. For this purpose, a rotor 22 is also provided between the two gear rings 6 and 7 of the rotary frame 3 and is likewise rotatable around the braided axis 14, and the rotor is directed radially outward and downward. A plurality of magnets, preferably permanent magnets or electromagnets 16 are attached.

  The rotor 22 is supported on the carrier shaft 2 on the outside via a roller bearing 18 and is coaxial with the braided axis and is likewise supported on the carrier shaft 2 on the outside via a roller bearing 18. The gear ring 19 is coupled to the gear ring 19 via a shaft 23, and faces the gear ring 20 in parallel with the gear ring 20.

  The rotor 22 is provided between the gear rings 6 and 7 and together with the inside of the rotary frame 3, so that it cannot be rigidly connected to the drive shaft 23. Otherwise, it is assumed that the drive shaft must pass through the rotating frame 3 otherwise. As a result, the rotor 22 and the drive shaft 23 are coupled in a non-contact manner by a pair of permanent magnets 24, and the permanent magnets are provided on opposite sides of the bracket 25 for the rotating frame 3. However, other solutions with further conventional machine elements for driving the rotor 22 are possible.

  A fixed gear 21 is provided between a gear ring 20 for driving the rotating frame 3 and a gear ring 19 for driving the rotor 22, and the fixed gear includes two gear rings 19, 19. 20 and is driven by an electric motor and a gear transmission (both not shown). As a result, the rotating frame 3 and the rotor 22 are driven at the same rotational speed, but in the opposite direction.

  In FIGS. 3 to 5, instead of driving the first bobbin carrier 4 by the rotor 22, driving by the fixed electromagnet 16 as a linear motor is displayed.

  In FIG. 3, first, the first bobbin carrier 4 and that the first bobbin carrier is supported on the rotating frame 3 are shown in an enlarged cross-sectional view. Since the internal gear 41 is supported by the internal gear ring 6 and the external gear 42 is supported by the external gear ring 7, the gap 17 (this embodiment) is formed between the housing 44 of the first bobbin carrier 4 and the rotary frame 3. And has a height of approximately 2 mm), and the second wire 11 can be guided as described above through the gap.

  A disk-shaped permanent magnet 15 is installed in the bottom of the housing 44, and the N pole N of the permanent magnet and the S pole S of the permanent magnet are oriented perpendicular to the conical surface of the rotating frame 3. Yes. An electromagnet 16 is provided below the surface of the rotating frame 3 at a uniform distance so as to circulate on the circumference.

  The representation of the permanent magnet 15 and the electromagnet 16 in FIG. 3 should be understood only schematically. In particular, instead of the permanent magnet 15, a magnet system having a hard magnetic part and a soft magnetic part and / or having a larger extension in the axial direction of the first bobbin carrier 4 than shown in FIG. 3 may be used. Good.

  The electromagnet 16 forms a travel path of a linear motor that simultaneously rotates and moves all the first bobbin carriers 4 as a carriage. For this purpose, by supplying a corresponding current to the electromagnet 16, a magnetic field that circulates in the rotating frame 3 is created, and the circulated magnetic field entrains the first bobbin carrier 4 by magnetic coupling. The rotating magnetic field continues to move in the direction opposite to the rotation direction of the rotating frame 3. As a result, the first bobbin carrier 4 and the second bobbin carrier 5, and the first wire 10 and the second wire 11 together with the first bobbin carrier 4 are rotated in reverse at the same rotational speed with respect to the braiding head 8, thereby A uniform and symmetrical braid is formed in the head 8. Driving all the first bobbin carriers 4 with a common linear motor further ensures that all the first bobbin carriers 4 are driven at equal rotational speeds.

  FIG. 4 schematically shows that the external gear 42 of the first bobbin carrier 4 rolls on the external gear ring 7, and the same indication is given to the internal gear 41 and the internal gear ring 6. It is considered a thing. The flight path in which the second wire 11 circulates above or below the first bobbin carrier 4 and with it around the external gear 42 is likewise schematically indicated by two broken lines. Here too, the recesses 71 provided periodically in the individual tooth spaces of the external gear ring 7 are recognized, and the second wire 11 can enter the recesses.

  Six electromagnet coils 16 are recognized inside the rotating frame 3, and the electromagnet coils form part of a travel path of a linear motor for driving the first bobbin carrier 4. Since the external gear ring 7 is provided on the conical outer surface of the rotating frame 3, the linear motor is formed as an external rotor motor.

  FIG. 5 shows an alternative embodiment that does not correspond to the implementation shown in FIGS. At this time, the rotating frame 3 has a shape of a hollow truncated cone provided vertically, and the hollow truncated cone is tapered upward. The material to be braided around or the manufactured braid is supplied and discharged from below to above. In this case, the first bobbin carrier 4 is provided on the inner conical surface of the rotating frame 3 in a state where the lower side is inclined inward. Thereby, the linear motor is formed as an internal rotor motor.

  In particular, FIG. 5 shows details of the configuration of the magnets in the travel path of the linear motor in the first bobbin carrier 4 and in the rotating frame 3. Below the surface of the rotating frame 3, a plurality of ribs are provided in the circumferential direction, and conductor wires are individually wound around the ribs, thereby forming a coil having an elongated cross section. In the first bobbin carrier 4 (in this figure, the outer periphery of the first bobbin carrier is only indicated by a broken line), a permanent magnet structure is provided on the edge of the first bobbin carrier facing the rotating frame 3. The permanent magnet structure is formed in a horseshoe shape in this case. Therefore, because of the magnetic coupling between the first bobbin carrier 4 and the electromagnet 16 in the rotating frame 3, not only a pair of magnetic poles as shown in FIG. 3, but two such pairs are opposed to each other. A stronger magnetic attractive force is generated. A compact and closed transition of the generated magnetic coupling field lines is likewise implied in FIG. Again, a gap 17 is formed between the permanent magnet 15 and the rotating frame 3, and the second wire 11 can be guided through the gap.

  In FIG. 6, a magnetic holding device is finally displayed, and the first bobbin carrier 4 can be fixed so as not to slide down toward the outside lower side or the inner lower side by using the magnetic holding device. .

  The magnetic holding device is formed by two identically constructed horseshoe-shaped structures consisting of permanent magnets 15 in the first bobbin carrier 4 or below the surface of the rotating frame 3, each of which is individually Furthermore, it corresponds to the horseshoe-shaped magnetic structure shown in FIG. 5 and is magnetically coupled to each other.

  In order to ensure that the two horseshoe-shaped magnetic structures are always provided in opposite directions so that the holding function of the magnetic structure can be satisfied, the magnetic structure provided in the rotating frame 3 is the first It is preferable to rotate together with the bobbin carrier 4. This is most easily achieved when the magnet does not form a fixed travel path for the linear motor in the rotating frame 3 but is provided on the rotating rotor 22 as implied in FIGS. The In this case, since the magnets in the rotating frame 3 do not have to be periodically activated and shut off, permanent magnets 15 may also be used for this purpose. In that case, the magnetic structure comprising the permanent magnets 15 provided on the rotatable rotor 22 shown in FIG. 6 has the function of the rotary drive unit for the first bobbin carrier 4 and the first bobbin carrier. At the same time, it takes on the holding action that prevents the 4 from sliding off, so that a particularly simple construction is established.

1 Rotary Braiding Machine 2 Carrier Shaft 3 Rotating Frame 4 First Bobbin Carrier 41 Internal Gear 42 External Gear 43 First Bobbin 44 Housing 45 Turning Roller 5 Second Bobbin Carrier 51 Second Bobbin 6 Internal Gear Ring 61 Teeth Recess in groove 7 External gear ring 71 Recess in tooth groove 8 Braiding head 9 Braiding point 10 First wire 11 Second wire 12 Thread lever 13 Deflection roller provided on thread lever 14 Braided axis 15 Permanent magnet 16 Electromagnet 17 Gap 18 Roller bearing 19 Gear ring for driving the rotor 20 Gear ring for driving the rotating frame 21 Gear between the drive gear rings 22 Rotor 23 Drive shaft of the rotor 24 Permanent magnet 25 for driving the rotor 25 Rotation Bracket for frame

Claims (13)

A rotary braiding machine (1) having a braided axis (14) for braiding a cord-like material, in particular a wire, carbon fiber or woven fiber into a braided article,
A plurality of first bobbin carriers (4) rotatable around the braided axis (14) and a plurality of second bobbin carriers (5) capable of relative movement with respect to the first bobbin carrier (4) ), And
Each first bobbin carrier (4) has a first bobbin (43) and provides a first cord (10), and each second bobbin carrier (5) is a second bobbin (51) and a second rope (11) are prepared, and the rotary braiding machine (1) is configured to knit the first rope (10) and the second rope (11). Has been
Furthermore, the at least one first bobbin carrier (4) is provided such that the at least one second cord (11) can completely rotate around the at least one first bobbin carrier (4). The first bobbin carrier (4) is capable of being guided along at least one closed guide path that rotates around the braided axis (14);
The surface of the at least one closed guide path is formed as a gear ring (6, 7), and the at least one first bobbin carrier (4) has at least one gear (41, 42). The at least one gear (41, 42) meshes with the gear ring (6, 7), and in particular the at least one second cord (11) is said at least one. The rotary braiding machine is characterized by being constantly engaged with the gear rings (6, 7) while moving around one of the first bobbin carriers (4). The surface of the at least one closed guide path has a continuous at least one recess (71) extending substantially perpendicular to the direction of extension of the guide path, the recess being Deeper than the tooth groove of the gear ring (6, 7), and
Said at least one second cord (11) is temporarily said at least while said at least one second cord (11) moves around said at least one first bobbin carrier (4). The rotary braiding machine (1) according to claim 1, characterized in that it enters into one recess (71).   Device for preventing said first bobbin carrier (4) from moving in at least one direction in the axial direction in the region of said gears (41, 42) in said at least one first bobbin carrier (4) The rotary braiding machine (1) according to claim 1 or 2, characterized in that is attached.   The at least one first bobbin carrier (4) has two gears (41, 42) at both ends of the first bobbin carrier (4) so as to be coaxial or substantially coaxial with each other. The rotary braiding machine (1) according to any one of claims 1 to 3, characterized in that it is rotatably mounted.   The first bobbin carrier (4) moves on a convex surface, particularly a cylindrical, conical, or frustoconical surface as viewed from the first bobbin carrier (4), The rotary braiding machine (1) according to any one of claims 1 to 4.   The first bobbin carrier (4) moves on a concave, in particular cylindrical, conical or frusto-conical surface when viewed from the first bobbin carrier (4). Item 5. A rotary braiding machine (1) according to any one of items 1 to 4.   The rotational movement of the at least one first bobbin carrier (4) around the braided axis (14) is non-contact type by driving means provided outside the at least one first bobbin carrier (4). The rotary braiding machine (1) according to any one of claims 1 to 6, characterized in that   Both the drive means and the at least one first bobbin carrier (4) each have at least one magnet, in particular a permanent magnet (15) or an electromagnet (16). 7. The rotary braiding machine (1) according to 7.   The driving means has a plurality of fixed electromagnets (16) provided around the braided axis (14) on a closed path, and the electromagnets are arranged on the at least one first bobbin carrier ( Rotation according to claim 8, characterized in that a rotating magnetic field can be generated which entrains 4) by magnetic coupling and rotates the at least one first bobbin carrier (4) about the braided axis (14). Formula braiding machine (1).   The drive means comprises at least one magnet, in particular a permanent magnet (15) or an electromagnet (16), which can be rotated around the braided axis (14) on a closed path, The rotating magnetic field is generated by entraining the at least one first bobbin carrier (4) by magnetic coupling and rotating the at least one first bobbin carrier (4) around the braided axis (14). The rotary braiding machine (1) according to claim 8, characterized in that it is possible.   At least one magnet (15) in the driving means and at least one magnet (15) in the at least one first bobbin carrier (4) are such that the at least one first bobbin carrier (4) is at least 11. The control device according to claim 8, wherein the at least one first bobbin carrier is controlled to prevent axial movement in one direction. 11. The rotary braiding machine (1) according to one item.   The rotational movement of the at least one first bobbin carrier (4) around the braided axis (14) is driven by driving means, in particular at least one electric motor, provided inside the first bobbin carrier (4). The rotary braiding machine (1) according to any one of claims 1 to 6, characterized in that it is caused. A method for operating a rotary braiding machine (1) according to any one of the preceding claims,
During braiding, the first bobbin carrier (4) rotates about the braided axis (14) and the second bobbin carrier (5) is relative to the first bobbin carrier (4). Carry out the move,
Furthermore, at least one first bobbin carrier (4) is provided such that at least one second cord (11) can move completely around said at least one first bobbin carrier (4). And at least the first bobbin carrier (4) is guided along at least one closed guide path;
The at least one second cord (11) moves around the at least one first bobbin carrier (4) and the gears (41, 42) of the at least one first bobbin carrier (4). ) Meshing with the gear ring (6, 7), in which case it is permanently engaged with the gear ring (6, 7).

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