Rotary braiding machine

Abstract

The present invention relates to a rotary braiding machine (100) and a related method for operating the rotary braiding machine (100). The rotary braiding machine (100) has a plurality of first braiding material carriers (200a), a plurality of second braiding material carriers (200b), a moving unit, a driver and a controller. The moving unit is arranged and designed to move repositioning elements (300) respectively associated with the first braiding material carriers (200a) between a first position and a second position. The driver is designed to: drive the plurality of first braiding material carriers (200a) to rotate around a common braiding center in a first rotation direction; and drive the plurality of second braiding material carriers (200b) to rotate around the common braiding center in a second rotation direction different from the first rotation direction. The controller is also designed to control the moving unit so that the movement of at least one of the repositioning units (300) can be adjusted.

Description

Technical Field

[0001] The present application relates to a rotary braiding machine, and a method for operating such a rotary braiding machine. Background Art

[0002] Braiding machines for braiding braided materials are known in the prior art. Known braiding machines are based on similar ideas in principle. In order to form a braid, a braiding material carrier, such as a bobbin carrier, carrying the braided material must be guided to each other in a defined pattern to achieve the interweaving of the braided material. For example, the braided material can be a wire (Draht) or a yarn. In this case, the braided material is untied from the braided material carrier and tied by a ring. The finished braid is formed in this ring. The point at which the braided material composition is completed (so that the braided material is compacted to its final width and reaches its final position in the braid) is called the braiding point. The lead-out device sends the finished braid out of the machine. The movement of the braiding material carrier (such as the bobbin movement) and the braid delivery must be carried out at precisely matched speeds to each other so that the desired braiding angle is maintained in the product.

[0003] In today's braiding machines, there are two different concepts in design engineering regarding how to solve the movement of the braiding material carrier and the interweaving of the braiding material - bobbin braiding technology and rotary braiding technology. Rotary braiding technology is based on the realization that the speed of the known bobbin braiding machines cannot be significantly increased due to the bobbin swinging movement. Therefore, a design principle for a braiding machine is sought in which the braiding material carrier rotates uniformly around the braiding center. Rotary braiding technology allows for quite high production speeds and is therefore also called high-speed braiding technology.

[0004] In the rotary braiding technology, two groups of braiding material carriers (e.g., bobbin carriers) on which the braiding material is stored each move on a circular track in opposite directions around the braiding center. The two tracks are arranged so that the wires from the braiding material carriers in one circulatory direction are pulled directly to the braiding point. This track is usually called the inner track and corresponds to a simple rotational movement. The braiding material from the braiding material carrier of the other track (usually called the outer track) must now be alternately guided above or below the braiding material carrier approaching on the inner track to achieve the interweaving of the braid. The braiding materials from the outer braiding material carriers are switched from the bottom to the top position several times during the process of bypassing the center of the machine so that they can pass under or above the inner bobbin. The change of position does not necessarily have to occur after each passage of the braiding material carrier in the other extension direction; it can also pass through several in succession. The braiding structure of the braid can be affected in this way. The control of the braiding material is achieved by a so-called repositioning unit, the implementation of which can vary according to the structural principle of the machine.

[0005] The result of this weaving is an intersection of the woven material, for example, of single and twisted threads, for example, with an axial extension. Known rotary braiding machines can only produce braids with a constant identical interlacing process. Braids with an intersection of different extensions cannot be produced using known rotary braiding machines.

[0006] Therefore, there is a need for an improved rotary braiding machine and related methods. In particular, there is a need for a rotary braiding machine and related methods that can produce braids with more resistant properties under mechanical stress and / or different crossover conditions. Summary of the invention

[0007] A first aspect of the present application relates to a rotary braiding machine. The rotary braiding machine has a plurality of first braiding material carriers, a plurality of second braiding material carriers, a moving unit, a drive, and a controller. The plurality of first braiding material carriers are arranged around a common braiding center of the rotary braiding machine. The plurality of first braiding material carriers are respectively designed to carry braiding materials to be braided at the common braiding center. The plurality of second braiding material carriers are arranged around a common braiding center of the rotary braiding machine. The plurality of second braiding material carriers are respectively designed to carry braiding materials to be braided at the common braiding center. The moving unit is arranged and designed to move repositioning elements respectively associated with the first braiding material carriers between a first position and a second position. Each of the repositioning elements can raise the braiding material to the first position in such a way that at least one of the plurality of second braiding material carriers can pass under the raised braiding material. Each of the repositioning elements can lower the braiding material to the second position in such a way that at least one of the plurality of second braiding material carriers can pass over the lowered braiding material. The drive is designed to drive the plurality of first braiding material carriers so that they rotate around the common braiding center in a first rotational direction. The drive is designed to drive the plurality of second braided material carriers so that they rotate around the common braiding center in a second rotational direction different from the first rotational direction. The controller is designed to control the mobile unit so that the movement of the at least one repositioning element can be adjusted. For example, the controller can be designed to control the mobile unit so that the movement of at least one of the repositioning units can be adjusted. For example, the controller can be designed to control the mobile unit so that the movement of the at least one repositioning unit is adjusted by the control. For example, the controller can be designed to control the mobile unit so that the movement of each repositioning unit is adjusted by the control. The adjustment of the movement of the repositioning unit can be carried out in particular during the braiding process, i.e. when the rotary braiding machine is running.

[0008] A second aspect of the present application relates to a method for operating a rotary knitting machine. The rotary knitting machine has a plurality of first knitting material carriers, a plurality of second knitting material carriers, a moving unit, a drive, and a controller. The plurality of first knitting material carriers are arranged around a common knitting center of the rotary knitting machine. The plurality of first knitting material carriers are respectively designed to carry knitting materials to be knitted at the common knitting center. The plurality of second knitting material carriers are arranged around the common knitting center of the rotary knitting machine. The plurality of second knitting material carriers are respectively designed to carry knitting materials to be knitted at the common knitting center. The moving unit is arranged and designed to move repositioning elements respectively associated with the first knitting material carriers between a first position and a second position, respectively. Each of the repositioning elements can raise the knitting material to the first position in such a way that at least one of the plurality of second knitting material carriers can pass under the raised knitting material. Each of the repositioning elements can lower the knitting material to the second position in such a way that at least one of the plurality of second knitting material carriers can pass over the lowered knitting material. The method has such a drive that the plurality of first woven material carriers are driven so that the plurality of first woven material carriers rotate around the common woven center in the first rotation direction. The method also has such a drive that the plurality of second woven material carriers are driven so that the plurality of second woven material carriers rotate around the common woven center in a second rotation direction different from the first rotation direction. The method further has a control of the mobile unit so that the movement of at least one of the repositioning elements can be adjusted. The method can control the mobile unit in such a way that, for example, the movement of at least one of the repositioning units is adjustable. The method can have a control of the mobile unit, for example, so that the movement of the at least one repositioning unit is adjusted by control. The method can control the mobile unit, for example, so that the movement of each of the repositioning units is adjusted by control.

[0009] For the sake of clarity, the following description of the invention mainly focuses on the rotary braiding machine according to the first aspect, wherein the following explanations apply correspondingly to the method of operating the rotary braiding machine according to the second aspect.

[0010] The braiding center may also be described as a braiding point. A plurality of first and / or second braiding material carriers may be driven in such a way that they rotate around a common braiding point. The first and / or second braiding material carriers may each carry a braiding material to be braided. The first and / or second braiding material carriers may each be formed as a bobbin carrier and each carry a braiding material to be braided on a bobbin.

[0011] By raising and lowering the braided material alternately / oscillatingly by means of a repositioning element associated with a first braided material carrier, at least one of a plurality of second braided material carriers passes under the raised braided material and / or at least one of a plurality of second braided material carriers passes over the lowered braided material, the braided material can be woven into a braid in a braiding center. The repositioning element can be raised and lowered by means of a mobile unit. Here, it can be said that the operation (Durchlauf) of the repositioning element is completed when the mobile unit moves the repositioning element from a first position to a second position and then back to the first position. The speed and / or frequency of the movement or the operation of the repositioning element influence the intersection points of the braided material and thus the design / interweaving pattern of the braid.

[0012] According to a first exemplary embodiment of the rotary knitting machine of the first aspect, the moving unit may have a rotatable kurven ring or be formed as a rotatable kurven ring. The movement of the repositioning element may be adjusted by rotating the kurven ring. For example, the movement of the repositioning element may be adjusted by changing the movement speed of the kurven ring.

[0013] The controller can be designed to control the moving unit in such a way that the controller causes the driver to drive the rotatable curve ring so that the rotatable curve ring rotates in a first rotation direction around a common weaving center (rotation center) at a rotation speed of the curve ring. The controller can be designed to cause the driver to drive a plurality of first woven material carriers so that they rotate in a first rotation direction around a common weaving center at a first rotation speed, the first rotation speed taking into account the rotation speed of the curve ring. The controller can be designed to cause the driver to drive a plurality of second woven material carriers so that they rotate in a second rotation direction different from the first rotation direction at a second rotation speed around a common weaving center, the second rotation speed taking into account the rotation speed of the curve ring.

[0014] The arc path may be arranged in a curved loop. The repositioning element may be raised and lowered according to the direction of the arc path. For example, the movement of the repositioning element may be adjusted by changing the arc path of the curved loop. If the arc path is constant during the knitting process, the movement of the repositioning element may be adjusted by changing the rotation of the curved loop during the knitting process.

[0015] The first rotational speed taking into account the rotational speed of the curve loop can be understood as the first rotational speed being coordinated with the rotational speed of the curve loop. For example, the first rotational speed taking into account the rotational speed of the curve loop can be understood as the first rotational speed being coordinated with the arc path in the curve loop so that the repositioning elements can perform their respective predetermined swinging rise and fall with / despite the rotation of the curve loop. The second rotational speed taking into account the rotational speed of the curve loop can be understood as the second rotational speed being coordinated with the rotational speed of the curve loop. For example, the second rotational speed taking into account the rotational speed of the curve loop can be understood as the second rotational speed being coordinated with the arc path in the curve loop so that the repositioning elements can perform their respective predetermined swinging rise and fall of the woven material with / despite the rotation of the curve loop.

[0016] In normal operation, the speed of the curve loop is in particular greater than 0, the speed of the curve loop may be less than or equal to the first speed. The speed of the curve loop may be less than or equal to the value of the second speed. In normal operation, the speed of the curve loop is (much) less than the first speed. In normal operation, the speed of the curve loop is (much) less in magnitude than the second speed.

[0017] The drive may have a curve ring drive. The curve ring drive may be designed to drive the curve ring so that the curve ring rotates around the common braiding center in the first rotation direction at the rotation speed of the curve ring. The curve ring drive may be designed as an electric drive.

[0018] The rotary braiding machine can also have a swivel bearing. The axis of rotation of the swivel bearing can correspond to the braiding center / braiding point. The curve ring can be supported on the swivel bearing. The rotation of the swivel bearing at one speed can cause the curve ring to rotate at the same speed, for example.

[0019] The rotary braiding machine may also have a transmission connected to the curve ring drive and the slewing bearing. The transmission may be designed to transfer energy provided by the curve ring drive to the slewing bearing. The transmission may be designed as a belt drive or a gear drive. For example, the transmission may mesh with the slewing bearing or be engaged in the slewing bearing. The transmission may be moved by the curve ring drive and rotate the slewing bearing by its own movement.

[0020] According to a second exemplary embodiment of the rotary knitting machine of the first aspect, which can be implemented independently of the first exemplary embodiment of the rotary knitting machine or in combination with the first exemplary embodiment of the rotary knitting machine, the moving unit can be designed as at least one repositioning element driver or can have at least one repositioning element driver.

[0021] The movement of one or more of the repositioning elements may be regulated by at least one repositioning element driver. For example, the movement speed of one or more of the repositioning elements may be regulated. The controller may be designed to control the moving unit in such a way that the controller causes at least one repositioning element driver to regulate the movement of at least one, for example all, of the repositioning elements.

[0022] According to a first possible configuration of the second exemplary embodiment, at least one repositioning element driver, for example configured as a single repositioning element driver, can jointly adjust the movement of each repositioning element. According to a second possible configuration of the second exemplary embodiment, at least one repositioning element driver can be configured as, for example, a plurality of repositioning element drivers, each of which is associated with a repositioning element. Each repositioning element driver can accordingly adjust the movement of its associated repositioning element. For example, at least one repositioning element driver can have one or more servomotors or electromagnetic drivers, or can be designed as such. Each of the servomotors or electromagnetic drivers can be associated with a relevant repositioning element and can adjust the movement of the relevant repositioning element based on a control signal or control command received from a controller.

[0023] By adjusting the movement of at least one repositioning element, the intersection points of the braided material may be affected, thereby affecting the configuration / weaving pattern of the braid.

[0024] The first knitting material carrier can be designed as a so-called outer knitting material carrier of a rotary knitting machine. The second knitting material carrier can be designed as a so-called inner knitting material carrier of a rotary knitting machine.

[0025] The drive may have a first drive. The first drive may be designed to drive an outer rotor. The outer rotor may be designed to carry the first braided material carrier and rotate them around a common braiding center in a first rotation direction.

[0026] According to a first possible implementation, the rotary braiding machine may have a differential gear located downstream of the first drive. The differential gear may be designed to drive an inner rotor. The inner rotor may be designed to carry a second braiding material carrier and rotate them around a common braiding center in a second rotation direction.

[0027] According to a second possible implementation, the driver may have a second driver. The second driver may be designed to drive an inner rotor. The inner rotor may be designed to carry a second braided material carrier and rotate them around a common braiding center in a second rotation direction.

[0028] The first and / or second braiding material carrier can extend in a circle around a common braiding center, i.e., be arranged along the circumference of the common braiding center. The first braiding material carrier can be arranged uniformly spaced from each other in the circumferential direction around the common braiding center. The second braiding material carrier can be arranged uniformly spaced from each other in the circumferential direction around the common braiding center. For example, the first and / or second braiding material carrier can be a bobbin on which the braiding material can be wound, for example. The first braiding material carrier can be arranged at the same first distance from the braiding center in the radial direction, respectively. The second braiding material carrier can be arranged at the same second distance from the braiding center, respectively, in the radial direction. The first and second distances can be the same or different. The first distance can be greater than the second distance. The radial distance between the first and / or second braiding material carrier and the braiding center can be constant / unchanged or variable. The first and / or second braiding material carrier can be loaded with the same amount of braiding material, or at least partially different amounts from each other. In the braiding center, the braiding materials provided by the first and / or second braiding material carriers are woven together. The braiding center can also be described as a braiding axis of a braiding machine. The braiding center can be parallel to the longitudinal axis of the braiding machine or correspond to it.

[0029] The braided material may be any conceivable stranded or elongated material suitable for a braiding process. Thus, various braids may be produced from stranded materials such as wires or textile fibers by means of a rotary braiding machine, for example in the form of a pipe braid or a rope braid and / or for winding, for example, a cable with a wire braid. For example, the rotary braiding machine may be a wire braiding machine which is particularly suitable for braiding wires.

[0030] The complete process of producing a braided material can be understood as a braiding process. Furthermore, it is conceivable that the braiding process can be understood as a process from the start of the rotary braiding machine to the stop of the braiding machine. For example, if one or more braiding material carriers have been used up and replaced by a complete braiding material carrier (i.e. a carrier completely filled with braiding material), the rotary braiding machine will stop.

[0031] In order to control the drive, a control device can be provided as a controller. The control device can be designed to control the corresponding drive and specify and / or adjust the corresponding rotation speed. The corresponding drive can receive corresponding control instructions from the control device for this purpose. The corresponding drive can drive the braided material carrier accordingly based on the control instructions.

[0032] Even if reference is made herein to the rotational speed instead of the angular speed or the path speed, the statements apply correspondingly to the angular speed or the path speed.The control device can be designed to adjust the respective rotational speed several times / repeatedly during weaving.

[0033] The method can be performed in whole or in part by a computer program. Therefore, a computer program product having a program code portion for performing the method can be provided. The computer program can be stored on a computer-readable storage medium or stored in a knitting machine. If the program code portion of the computer program is loaded into a calculator, a computer or a processor (e.g. a microprocessor, a microcontroller or a digital signal processor (DSP)), or is run on a calculator, a computer or a processor, then they can cause the computer or processor to perform one or more steps or all steps of the method described herein.

[0034] Even though some aspects and details described above were described with respect to a knitting machine, these aspects can also be implemented in a corresponding manner in a method for operating a knitting machine or in a computer program supporting or executing the program. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The present application will be further explained on the basis of the accompanying drawings. These drawings schematically show:

[0036] FIG. 1 shows two illustrations of examples of rotary braiding machines;

[0037] Figure 1b Figure 1a The functional principle of the rotary braiding machine is explained, as well as the use Figure 1a Examples of braids produced by rotary braiding machines;

[0038] Figure 2a Two illustrations of a rotary braiding machine according to an exemplary embodiment of the present invention;

[0039] Figure 2b Figure 2a An explanation of the functional principle of the rotary braiding machine, and the use of Figure 2a Example of a braid produced on a rotary braiding machine. DETAILED DESCRIPTION

[0040] Specific details are set forth below, but not limited thereto, in order to provide a complete understanding of the invention. However, it is clear to a person skilled in the art that the invention can be applied to other exemplary embodiments that may differ from the details set forth below. For example, the drawings are mainly described with respect to an exemplary embodiment in which a curved ring is used as a unit for the movement of the repositioning element. However, the invention is not limited to this exemplary embodiment. Thus, exemplary embodiments are possible, for example, in which the repositioning element is moved by one or more actuators.

[0041] It is also clear to those skilled in the art that the explanations set forth below are / can be implemented using hardware circuits, software means or a combination thereof. The software means may be associated with a programmed microprocessor or general purpose calculator, computer, ASIC (Application Specific Integrated Circuit) and / or DSP (Digital Signal Processor). It is also clear that even if the following details are described in conjunction with a method, these details may also be implemented in a suitable device unit, a computer processor or a memory connected to a processor, wherein the memory provides one or more programs that, when executed by the processor, perform the method.

[0042] Figure 1a A schematic diagram of an example of a rotary braiding machine 1 is shown. The rotary braiding machine 1 has two sets of braiding material carriers, which are described below as, for example, bobbin carriers 2a, 2b. In the rotary braiding technique, and in a special form of the lever arm braiding technique, for example Figure 1a As shown, two groups of bobbin carriers 2a, 2b on which the braiding material (hereinafter described as wire by way of example) is stored by bobbins, each moving in opposite directions on a circular path around a braiding center. The rotary braiding machine 1 is also described as a lever arm braiding machine or lever braiding machine 1 in some cases. Special lever arm braiding machines, so-called fast braiding machines according to the Horn system (System Horn), currently achieve the highest processing speeds. Since no yarn length compensation is required, they also enable the most accurate control of the yarn tension and thus the excellent quality of the braided product.

[0043] The two paths on which the bobbin carriers 2a, 2b move are arranged so that the wire coming from the upper bobbin carrier 2b and therefore the upper bobbin carrier in one rotational direction is pulled directly to the braiding point. This path is referred to below as the inner bobbin path and performs a simple rotational movement. Therefore, the upper bobbin carrier 2b is also often referred to as the inner bobbin carrier 2b. The wire coming from the lower bobbin carrier 2a and the lower bobbin is now guided through the bobbin carrier 2b approaching the inner path alternately up or down by means of corresponding repositioning elements, since Figure 1aThe exemplary configuration of the rotary braiding machine in is a lever arm braiding machine, so the repositioning element is designed as a repositioning lever 3. The lower bobbin carrier is generally referred to as the outer bobbin carrier 2a. The associated path of the outer bobbin carrier 2a is correspondingly generally referred to as the outer path. In order to enable the repositioning lever 3 to complete such an up and down swinging movement, these levers are moved, for example, by means of a sliding slide, which slides in an arc path fixedly positioned in space. This arc path is located inside the curve ring 4. The central axis 5 of the rotary braiding machine 1 is also fixedly positioned in space. In the example shown, for the purpose of simpler explanation, the two components are, for example, fixedly connected to each other. The curve ring 4 is used to move the repositioning lever 3. This movement occurs during braiding, and for the rotary braiding machine 1, it is always carried out according to the configuration of the arc path in the curve ring 4. This means that if the movement of the repositioning lever 3 is to be adjusted, the curve ring 4 must be replaced by a curve ring with an arc path with a different configuration.

[0044] The drive motor 6 of the rotary braiding machine 1 transmits the rotational movement to the shaft located in the central shaft 5 / bearing assembly via a parallel belt drive so that the outer rotor or inner rotor located at the other end and the outer bobbin channel and the outer bobbin carrier 2a or the inner bobbin channel and the inner bobbin carrier 2b rotate. The two belt drives are used to adjust the speed so that the two bobbin paths on the output side and the bobbin carriers 2a and 2b have the same speed in terms of value. This can alternatively be achieved by only one belt and downstream gear drive. This rotational movement is transmitted via a planetary gear from the outer rotor (speed n) rotating in the opposite direction to the inner rotor. A ) is transmitted to the inner shaft path (speed n I ). The two paths have the same amount of speed (|n A |=|n I |). The product to be knitted is knitted by the lever arm knitting machine at a speed v on a pulling wheel 8 driven by an electric motor. A , pulling by means of multiple cycles.

[0045] More precisely, in the case of a lever arm braiding machine 1 as a special example of a rotary braiding machine 1, the two rotors, i.e. the inner rotor and the outer rotor, are placed on a central shaft 5. Both rotate in the same direction via a drive motor 6 / drive, but at different speeds / rotational speeds coordinated with each other. For this purpose, gears of different sizes can be used for the drive. Due to the differential gear, which can have small gears, an inner rotor and an inner bobbin carrier 2b, the bobbin carrier 2b of the inner ring gets a rotation direction opposite to the outer ring / outer bobbin carrier 2a with the same rotational speed in number. The outer rotor carries the outer ring bobbin 2a. Associated with each outer bobbin 2a is a repositioning lever 3, which is rotatably supported on the outer rotor. At the same time, this rotor (outer rotor) constitutes a sliding path for the bobbin carrier 2b of the inner bobbin ring. The outer rotor also includes, for example, a sliding path groove into which the wire of the outer bobbin can be lowered. Each of the repositioning levers 3, for example, engages with a sliding element in a guide groove of a curve ring 4. On the known lever arm braiding machine, the curve ring / groove curve ring 4 is fixed. In each case, the repositioning lever 3 is controlled by a grooved curve ring 4. The repositioning lever 3 for the outer conductor in this context is formed in such a way that the lever tip can move on an imaginary sphere spanning around the braiding point. The conductor guided via the lever 3 therefore always has the same path length to reach the braiding point, so that no yarn length compensation is required in the lever-arm braiding machine 1. Due to the rotation of the outer rotor, the corresponding sliding element of each repositioning lever 3 is pushed through the guide groove of the curve ring 4 and thereby moves up and down. The course of the groove determines how often the lever 3 can change its position during a revolution. The interweaving pattern of the braid 10 is set in this way (see Figure 1b ). Since both the respective repositioning lever 3 and the slide path with the grooves are fixed on the outer rotor, no positioning problems arise and the wire is always accurately lowered into the respective grooves. For example, in order to move the bobbin carriers 2b of the inner bobbin turns in opposite directions around the center of the machine, they are pushed in opposite directions via gears supported on the outer rotor. These gears are driven, for example, by annular teeth on the inner rotor at twice the speed of the outer rotor, so that the bobbins circulate around the braiding center at a speed that is opposite to the direction of rotation of the slide path and is equal in quantity. This design principle produces a relative speed between the bobbin carrier and the slide path that is twice the speed of the slide path itself.

[0046] Since the braid on a conventional high-speed braiding machine 1 extends along the product axis, the rotational speeds are related to each other as follows:

[0047] n A =-n I

[0048] 0 = n A +n I

[0049] Braiding machine's braiding pitch G The calculation is as follows:

[0050] s G =v A / n A

[0051] In About Figure 1a In the described structure, with the arc-shaped path fixedly positioned in space, the interlacing of the opposing guides occurs at the point where the deviation is introduced (see Figure 1b ). For simplicity, the curve process is Figure 1b The explanation is given by taking the case where only one wire of the braided fabric 10 is interwoven (crossed) as an example.

[0052] exist Figure 1b In the figure, a braided fabric 10 is schematically shown, which can be Figure 1a The rotary braiding machine 1 is used to produce the braid 10. The braid 10 can be, for example, a cable shield, more precisely, a braid shield for a cable. The braid 10 has a first wire winding 20, which extends helically in a first rotational direction and in the direction of a longitudinal axis 10a of the braid 10 at a first pitch. In other words, as seen from the lower end of the braid 10, i.e. in the direction of the arrows of the longitudinal axis 10a of the braid 10 and the rotary braiding machine 1, the first wire winding 20 is coiled upward counterclockwise at a first pitch. The braiding machine has a second wire winding 30, which extends helically in a second rotational direction and in the direction of the longitudinal axis 10a of the braid 10 at a second pitch. In other words, as seen from the lower end of the braid 10, i.e. in the direction of the arrows of the longitudinal axis 10a, the second wire winding 30 is coiled upward clockwise at a second pitch. Figure 1b In the example, the first pitch corresponds to the second pitch.

[0053] from Figure 1b As can be seen in FIG. 1 , a turn of the first wire winding 20 and a turn of the second wire winding 30 overlap at one point. This point is described as the intersection point or overlap point. Figure 1b In the example of , the two wire windings 20, 30 are interwoven with each other at the intersection. Since each wire winding 20, 30 has multiple turns in the direction of the longitudinal axis 10a, even if there is one intersection per turn, there are multiple such intersections in the direction of the longitudinal axis 10a. Figure 1b In the example of , it should be recognized that these intersections are located on a straight line 50 extending parallel to the direction of the longitudinal axis 10a. Due to the braiding, the two wire windings 20, 30 form two layers, so to speak, and can therefore also be referred to as two-layer wire wrapping (Drahtbespinnung), and since the intersections are parallel to the longitudinal axis, it can be referred to as two-layer wire wrapping, and the intersections run in the axial direction.

[0054] Figure 1bWhen the wires / wire windings 20, 30 of the braid 10 are moved, they experience movement relative to each other, which is accompanied by friction. In addition, these wires / wire windings 20, 30 are subject to traction and thrust loads. This leads to a limited service life of the wires / wire windings 20, 30 and, therefore, to a limited service life of the braid 10. Although Figure 1b The braid 10 shown in FIG. 1 has reverse wire wrapping, but it has a relatively high mechanical life and has a higher mechanical life than conventional braids (e.g., wires with the same orientation). However, the braid 10 can move, or more precisely, the wires of the braid 10 can move and form, for example, nests and holes. This has a negative impact on the electrical performance of the braid 10.

[0055] Figure 2a A rotary braiding machine 100 according to an exemplary embodiment of the present invention is shown. The rotary braiding machine 100 is configured as a lever braiding machine / lever arm braiding machine as an example. Other configurations are conceivable with appropriate adjustments. Figure 2a The lever braiding machine 100 is based on Figure 1a The lever braiding machine 1 described above is described with reference to the embodiment of the present invention, and therefore, the common features of the two braiding machines 1, 100 are not emphasized separately. Figure 1a The details of the description of the lever braiding machine 1 also apply accordingly Figure 2a The lever braiding machine 100. Figure 1a and Figure 2a The significant difference between the two lever arm knitting machines 1 and 100 can be said to be Figure 1a The curve loop 4 of the lever arm braiding machine 1 is stationary, while Figure 2a The curve ring 400 of the lever arm braiding machine 100 is not stationary, but rather, is rotating. As will be explained more precisely later, the movement of the repositioning lever 300 of the rotary braiding machine 100 can be regulated by the movement of the curve ring 400.

[0056] In the rotary braiding machine 100, the bobbin carriers 200a, 200b rotate uniformly around the braiding center. This rotary braiding technology allows high production speeds and is therefore also called high-speed braiding technology. In this rotary braiding technology, two sets of bobbin carriers 200a, 200b each move in a circular path in opposite directions around the braiding center, wherein the two sets of bobbin carriers 200a, 200b store braiding material wires, such as Figure 2aThe wire in the example shown. The two paths are arranged so that the braided material, such as the wire, is pulled directly to the braiding point from a bobbin carrier 200b in a circular direction. This path is described below as the "inner" path, and the corresponding bobbin carrier is referred to as the inner bobbin carrier 200b. The braided material from the bobbin of the other path - here referred to as the "outer" path - and more precisely, the outer bobbin carrier 200a of the outer path, must now be guided above or below the approaching bobbin on the inner path, or vice versa, to achieve the connection of the braid.

[0057] The lever braiding machine 100 has a drive 600. The drive 600 transfers its rotational movement to the outer rotor. Figure 1a Unlike the fixed position of the middle curve ring 4 in space, the curve ring 400 is supported on a slewing bearing 800. The rotation axis of the slewing bearing 800 corresponds to the axis of the weaving center. With the help of an electric drive 900, the slewing bearing 800 and the curve ring 400 experience a rotation speed n K Rotational movement. Figure 2a In the embodiment, the drive of the curve ring 400 is realized by a gear transmission. The gear transmission is connected to the electric drive 900 on its input side and is driven by the electric drive 900. On its output side, the gear transmission is connected (directly / indirectly) to the slewing bearing 800 and is therefore (directly / indirectly) connected to the curve ring 400, i.e., by the movement / rotation of the gear transmission, the slewing bearing 800 and the curve ring 400 move / rotate. As an alternative to the gear transmission, the curve ring 400 can be driven by the electric drive 900 at a speed of n by a belt drive. K rotational movement.

[0058] During the weaving process, the speed n of the curve ring 400 K In order to enable the repositioning lever 300 of the outer bobbin carrier 200a to be raised and lowered in an oscillating manner on the arc path of the curve ring 400, the rotational speed of the outer rotor and therefore the rotational speed of the outer bobbin carrier 200a must be coordinated with the curve ring 400. For the operation process of producing the braided fabric 1000 itself (see Figure 2b ), speed n K So it was added Figure 1a Speed ​​of inner and outer rotors n A , as the actual speed n of the outer rotor Aneu . The speed of the curve ring n K It can be said that the actual speed n of the outer rotor Aneu This is also actively taken into account in the rotational speed of the outer bobbin carrier 200a. Figure 2a The new speed n of the outer rotor in Aneu :

[0059] n Aneu=n A +n K

[0060] Due to the rotation of the curve ring 400, the speed of the inner rotor is further adjusted, so that the speed n of the curve ring 400 is taken into account for the speed of the inner rotor. K For the speed n of the inner rotor Ineu and the rotation speed of the inner bobbin carrier 200b, it can be said that the rotation speed n of the curve ring 400 K is considered negatively. Figure 1a Compared with the inner rotor, Figure 2a The inner rotor also rotates at a changing speed n Ineu run.

[0061] In order to Figure 1a The regulated speed drives the inner rotor, Figure 2a The lever arm braiding machine in the embodiment may have an additional drive 700, such as Figure 2a The additional drive 700 transmits the rotation speed n via a belt. Ineu The calculation method is as follows:

[0062] n Ineu =-n A +n K

[0063] n Ineu =-n Aneu +2*n K

[0064] Replaces drive 700, speed n Ineu This can also be achieved by downshifting the differential gear at the drive 600. By this rotational movement, the point of arc path deviation and the resulting wire interlacing point changes radially (see Figure 2b ). More specifically, as the rotation proceeds, the relative positions of the wires of the outer bobbin / bobbin carrier 200a and the wires of the inner bobbin / bobbin carrier 200b change relative to each other, so that the corresponding intersection points change as the rotation proceeds. The movement of the repositioning lever 300 can be adjusted by adjusting the rotational movement, thereby changing the interweaving of the wires. In this way, a flexible interweaving pattern can be achieved.

[0065] Although in Figure 1a and 1b On the rotary braiding machine, the rotation speed n of the outer bobbin carrier 2a and the inner bobbin carrier 2b is A 、n I The value of Figure 2a and 2b On a knitting machine 100, if n Kis not equal to 0, then the speed n of the outer bobbin carrier 200a and the inner bobbin carrier 200b Aneu 、n Ineu There is a mismatch in values.

[0066] The newly introduced speed of the curve loop is n K Rotational movement and pulling speed v of the pulling wheel A Together they form the helical pitch (Wendel-Steigung) s W

[0067] s W =v A / n K

[0068] To produce braid 1000 with rotation curve loop 400, the following calculations were used:

[0069] s G =v A / (n A +n K )

[0070] s G =v A / n Aneu

[0071] about Figure 2b , the production of the braid 1000 will be described more precisely. The dashed repositioning path indicates that during one revolution of the center of the braiding machine the wire from the outer bobbin / spool carrier 200a is switched several times from the lower position to the upper position so that the inner bobbin / spool carrier 200b can pass underneath or over it. The change of position does not necessarily occur after each pass of the bobbin / spool carrier in the other running direction. Several passes in succession are also possible. The braiding structure of the braid can be influenced in this way. The control of the yarn is achieved by so-called repositioning units, whose structural implementation depends on the construction principle of the machine. In the simplest case, this relates to relatively rigid guide plates, which are called deflectors. In other cases, the wire is actively moved via mechanical repositioning. This principle is used Figure 2a and 2b 1. The lever arm braiding machine 100 is depicted as an example in FIG.

[0072] exist Figure 2a and 2bOn the lever arm braiding machine 100, the outer conductor is guided via the deflection lever / repositioning lever 300, which performs a cyclic up-and-down movement during the center winding. Whenever the lever 300 with the outer conductor guided therethrough is at a high point, the inner bobbin carrier 200b, which is coiled in the opposite direction, can slide under the conductor. After this, the lever 300 moves to its lower position, for example, and the conductor is lowered into the indentation of the inner guide track before the inner bobbin carrier 200b below reaches there, so that the inner bobbin carrier 200b can slide over the conductor. The braid 1000 is formed in this way.

[0073] Figure 2b A braid 1000 is schematically shown, for example a braid shield for a cable, which may be used Figure 2a The lever arm braiding machine 100 is produced in Figure 1b Compared to a braid of the type shown in FIG. 1 , the braid 1000 has improved properties. The braid 1000 has a first wire winding 2000 that extends spirally in a first rotational direction at a first pitch in the direction of a longitudinal axis 1000a of the braid 1000. Expressed in another way, when viewed from the lower end of the braid 1000, i.e., in the direction of the arrow of the longitudinal axis 1000a, the first wire winding 2000 is coiled upward counterclockwise at a first pitch. The braid 1000 has a second wire winding 3000 that extends spirally in a second rotational direction at a second pitch in the direction of the longitudinal axis 1000a of the braid 1000. Expressed in another way, when viewed from the lower end of the braid 1000, i.e., in the direction of the arrow of the longitudinal axis 1000a, the second wire winding 3000 is coiled upward clockwise at a second pitch. Figure 2b In the example of , the first pitch corresponds to the second pitch, that is, each individual complete turn in the wire winding 2000, 3000 travels the same distance W in the direction of the longitudinal axis 1000a. In this case, one turn describes a complete rotation of the wire of the respective wire winding 2000, 3000.

[0074] from Figure 2b As can be seen in FIG. 1 , a turn of the first wire winding 2000 and a turn of the second wire winding 3000 overlap at one point. This point is described as a crossover point or an overlap point. Figure 2b In the example of , the two wire windings 2000, 3000 are intertwined at the intersections. Since each of the wire windings 2000, 3000 has multiple turns in the direction of the longitudinal axis 1000a, even if there is one intersection per turn, there are multiple such intersections in the direction of the longitudinal axis 1000a. Figure 2bIn the example of FIG. 5 , it should be recognized that these intersections extend in the shape of a spiral 5000 or a helix, i.e., do not form a straight line parallel to the direction of the longitudinal axis 1000a. Due to the braiding, the two wire windings 2000, 3000 form two layers, so to speak, and can therefore also be referred to as two-layer wire wrapping, and due to the helical curve of the intersections, the intersections extend helically as two-layer wire wrapping.

[0075] For simplicity and clarity, Figure 2b In each turn, there is only one intersection point, more precisely, the intersection point of each turn of the wire winding 2000 and the corresponding turn of the wire winding 3000. However, a turn of the wire winding 2000 and the corresponding turn of the wire winding 3000 can cross at more than one point, that is, cross at several points, that is to say, have several intersection points respectively, and they are intertwined at these intersection points. For example, the wire winding 2000 and the wire winding 3000 are intertwined at one or more of their turns, for example, each of their turns is not only once, but twice or if applicable, multiple times, so each turn has a first intersection point, a second intersection point and if applicable, there are other intersection points. In this case, there are multiple first intersection points, multiple second intersection points and if applicable, there are multiple other intersection points in the direction of the longitudinal axis 1000a. Multiple first intersection points can be described by the first spiral line 5000 / spiral in the direction of the longitudinal axis 1000a. A plurality of second intersections can be described by a second helix / spiral in the direction of the longitudinal axis 1000a, the helix 5000 / spiral being parallel to the first helix / spiral. A plurality of further intersections can be described by further helix / spirals in the direction of the longitudinal axis 1000a, the helix / spirals being parallel to the first helix 5000 / spiral and the second helix / spiral.

[0076] With respect to the overlap point having an axial extension and with respect to Figure 1b The braid 10 described, about Figure 2b The braid 1000 described with overlapping points extending in a spiral shape is more stable against pulling, twisting and alternating bending movements. Shielding as a combination of wire wrapping and braiding can be provided by the braid 1000, each turn of the braid 1000 only interweaves with itself at one point of the circumference or at several points of the circumference. The interweaving points extend / stretch in a spiral along the longitudinal axis 1000a (e.g., the product axis) of the braid 1000. This increases the service life of the braid 1000 as a cable shield under two-dimensional or three-dimensional mechanical stress. Better electrical performance (i.e., better electrical characteristics) is additionally obtained during the service life (e.g., in terms of EMC, leakage current, etc.).

[0077] By stopping the drive 900 and the corresponding control of the drives 600 and 700, the braiding operation can be performed accordingly without generating a spiral line. For example, by stopping the drive 900, the curve ring 400 can assume a fixed / non-rotating position. By corresponding control of the drives 600, 700, the rotation speed of the outer rotor and the inner rotor can be adjusted, for example, so that it corresponds to Figure 1a The speed of the outer and inner rotors in the braiding process is . In this case, the braiding result is as follows Figure 1b Other braids with crossover points of different extension are conceivable. In any case, by adjusting the rotation speed n K 、n I 、n A , braids can be produced flexibly, especially braids with variable cross directions.

[0078] Alternative About Figure 2a The rotary braiding machine 100 described can also be used to produce the braided article 1000, on which the curve ring 400 is not required, but the movement of the repositioning lever 300 is adjusted. It is also conceivable to combine the movement of the repositioning lever 300 and the adjustment of the rotatable curve ring 400. As an example, it can be said at this point that each repositioning lever 300 can be connected to a drive, such as a servo motor or an electromagnetic drive. Each drive can control its associated repositioning lever 300 according to the control command received from the controller. The drives of the repositioning levers 300 can be arranged on their associated repositioning levers 300, for example, or connected thereto.

[0079] It is conceivable, for example, that the drive is controlled so that the repositioning lever 300 performs a completely continuous movement. In this case, the rotary braiding machine can produce Figure 1b Additionally or alternatively, it is conceivable that the drive is controlled so that the repositioning lever 300 does not perform a completely continuous movement. For example, after a complete run from the first position to the second position and back to the first position, one or each of the repositioning levers 300 can be briefly stopped / held before a drive is activated or before a new complete run of the repositioning lever 300 is performed before multiple drives are activated. The next crossing of the woven material can be delayed by a brief hold so that the crossing point is shifted, just like Figure 2b In this way, a spiral extension of the intersection can be achieved, such as Figure 2b .

[0080] The drive can be controlled in a completely flexible manner so that various weaving patterns / interlocking patterns of the woven fabric can be achieved. The drive can also be controlled at least partially in different ways so that various repositioning levers 300 can at least partially perform different movement processes.

Claims

1. A rotary braiding machine (100), comprising: - a plurality of first braided material carriers (200a) arranged around a common braiding center of the rotary braiding machine (100) and each designed to carry braided material to be braided at the common braiding center; - a plurality of second braiding material carriers (200b) arranged around a common braiding center of the rotary braiding machine (100) and each designed to carry braiding material to be braided at the common braiding center; - a movement unit, which is arranged and designed to move a repositioning element (300) respectively associated with the first knitted material carrier between a first position and a second position respectively, wherein Each of the repositioning elements (300) is capable of raising the knitted material to the first position so that at least one of the plurality of second knitted material carriers (200b) can pass under the raised knitted material, and wherein each of the repositioning elements (300) is capable of lowering the knitted material to the second position so that at least one of the plurality of second knitted material carriers (200b) can pass over the lowered knitted material, wherein the moving unit has a rotatable curve loop (400) or is designed as a rotatable curve loop (400); - A drive designed to: driving the plurality of first woven material carriers (200a) so that they rotate in a first rotation direction around the common woven center, and driving the plurality of second woven material carriers (200b) so that they rotate about the common woven center in a second rotation direction different from the first rotation direction; - A controller designed to: The moving unit is controlled so that the movement of at least one of the repositioning elements (300) can be adjusted.

2. The rotary braiding machine (100) according to claim 1, wherein the controller is designed as follows: Controlling the moving unit in such a manner that the controller causes the driver to drive the rotatable curve ring (400) so that the rotatable curve ring (400) rotates around the common weaving center in the first rotation direction at the rotation speed of the curve ring; causing the drive to drive the plurality of first woven material carriers (200a) to rotate around the common woven center in the first rotation direction at a first rotation speed, the first rotation speed taking into account the rotation speed of the curved loop, and The drive is caused to drive the plurality of second woven material carriers (200b) to rotate around the common woven center at a second rotational direction different from the first rotational direction and at a second rotational speed, wherein the second rotational speed takes into account the rotational speed of the curved loop.

3. The rotary braiding machine (100) according to claim 1 or 2, wherein: The drive has a curve ring drive (900) which is designed to drive the curve ring (400) so that the curve ring (400) rotates around the common braiding center in the first rotation direction at the rotation speed of the curve ring.

4. The rotary braiding machine (100) according to claim 3, wherein: The curve ring drive is designed as an electric drive.

5. The rotary braiding machine (100) according to claim 1 or 2, wherein: The rotary braiding machine (100) further has a slewing bearing (800) whose rotation axis corresponds to the braiding center, wherein the curve ring (400) is supported on the slewing bearing (800).

6. The rotary braiding machine (100) according to claim 5, wherein: The rotary braiding machine (100) further has a transmission device connected to the curve loop drive (900) and the slewing bearing (800), wherein the transmission device is designed to transmit energy provided by the curve loop drive to the slewing bearing.

7. The rotary braiding machine (100) according to claim 6, wherein: The transmission is designed as a belt transmission or a gear transmission.

8. The rotary braiding machine (100) according to claim 1 or 2, wherein: The displacement unit is designed as or has at least one repositioning element drive.

9. The rotary braiding machine (100) according to claim 8, wherein: The controller is designed to control the movement unit in such a way that the controller causes the at least one repositioning element driver to adjust the movement of the at least one repositioning element (300).

10. The rotary braiding machine (100) according to claim 1 or 2, wherein: The first braiding material carrier (200a) is designed as an outer braiding material carrier of the rotary braiding machine (100), and the second braiding material carrier (200b) is designed as an inner braiding material carrier of the rotary braiding machine (100).

11. The rotary braiding machine (100) according to claim 1 or 2, wherein: The drive has a first drive (600) which is designed to drive an outer rotor, wherein the outer rotor is designed to carry the first braiding material carrier (200a) and rotate it around the common braiding center in the first rotation direction.

12. The rotary braiding machine (100) according to claim 11, wherein: The rotary braiding machine (100) has a differential gear connected downstream of the first drive (600), the differential gear being designed to drive an inner rotor, wherein the inner rotor is designed to carry the second braiding material carriers (200b) and to rotate them around the common braiding center in the second rotation direction.

13. The rotary braiding machine (100) according to claim 1 or 2, wherein: The drive has a second drive (700) which is designed to drive an inner rotor, wherein the inner rotor is designed to carry the second braiding material carrier (200b) and rotate it around the common braiding center in the second rotation direction.

14. A method for controlling a rotary braiding machine (100), wherein: The rotary braiding machine (100) comprises a plurality of first braiding material carriers (200a), a plurality of second braiding material carriers (200b), a moving unit, a driver and a controller; wherein the plurality of first braiding material carriers (200a) are arranged around a common braiding center of the rotary braiding machine (100) and are respectively designed to carry braiding materials to be braided at the common braiding center; wherein the plurality of second braiding material carriers (200b) are arranged around the common braiding center of the rotary braiding machine (100) and are respectively designed to carry braiding materials to be braided at the common braiding center; wherein the moving unit is arranged and designed to move between a first position and a second position respectively and to move with the first position and the second position respectively. The method comprises the steps of: providing a repositioning element (300) associated with the first woven material carrier (200a), wherein each of the repositioning elements (300) is capable of raising the woven material to the first position so that at least one of the plurality of second woven material carriers (200b) can pass under the raised woven material; and wherein each of the repositioning elements (300) is capable of lowering the woven material to the second position so that at least one of the plurality of second woven material carriers (200b) can pass over the lowered woven material, wherein the moving unit has a rotatable curve loop (400) or is designed as a rotatable curve loop (400), and wherein the method comprises the following steps: driving the plurality of first woven material carriers (200a) so that the plurality of first woven material carriers (200a) rotate around the common woven center in a first rotation direction; driving the plurality of second woven material carriers (200b) so that the plurality of second woven material carriers (200b) rotate around the common woven center in a second rotation direction different from the first rotation direction; and The movement unit is controlled so that the movement of at least one of the repositioning elements (300) can be adjusted.

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