EP3307934B1 - Métier à tresser - Google Patents

Métier à tresser Download PDF

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Publication number
EP3307934B1
EP3307934B1 EP16711201.0A EP16711201A EP3307934B1 EP 3307934 B1 EP3307934 B1 EP 3307934B1 EP 16711201 A EP16711201 A EP 16711201A EP 3307934 B1 EP3307934 B1 EP 3307934B1
Authority
EP
European Patent Office
Prior art keywords
braiding
segments
segment
machine according
braiding machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP16711201.0A
Other languages
German (de)
English (en)
Other versions
EP3307934A1 (fr
Inventor
Fabian RITTERSHOFER
Florian Rapp
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP3307934A1 publication Critical patent/EP3307934A1/fr
Application granted granted Critical
Publication of EP3307934B1 publication Critical patent/EP3307934B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
    • D04C3/00—Braiding or lacing machines
    • D04C3/48—Auxiliary devices

Definitions

  • the invention relates to a braiding machine, in particular round braiding machine, for braiding a continuous continuously or oscillating braided core, with at least two bundles of braided twines and with a braid thread arranged between the braided filaments and the emergence point of the braiding threads on the braided core, over the inner surface of which the braided threads are guided be and consists of several adjustable segments, each adjustable segment of the braiding ring has its own adjustment.
  • braiding cores are frequently supplied which have a constant cross-section or a cross-section which changes considerably in the longitudinal direction of the braiding core in order to give the component to be produced its later shape.
  • the braids can in this case remain in the later component or be removed as a lost core again.
  • the braiding threads used may be individual threads or else braiding fibers, for example rovings made of carbon or glass fibers.
  • braided or braided fibers can be produced by braiding around a braid core so-called preforms, which serve the later production of a variety of components made of fiber-reinforced plastics.
  • preforms which serve the later production of a variety of components made of fiber-reinforced plastics.
  • the braiding threads or braiding fibers be laid down as precisely as possible on the braided core.
  • bobbins receive the bobbin threads, which are moved on guide tracks relative to each other so as to form a braid.
  • the clappers have different directions of rotation around the braid core.
  • the guideways are two counter-rotating, concentric circular paths, in the center of which - axially offset - the braid core to be braided moves.
  • braided cores with complex core geometry are used in the braiding machines, it is not possible to achieve a uniform braiding structure with the usually round braided rings having a constant opening cross section.
  • Indentations of the braided core can not be followed so that the quality of the braid suffers. Likewise, no braids with very different side lengths can be braided with sufficient quality.
  • the object of the present invention is to develop a braiding ring, which consists of individual segments, in such a way that even complex braided core geometries can be braided with high quality.
  • each segment of the braiding ring can be adjusted individually by an arbitrary amount
  • the free distance between the inner surface of the braiding ring and the casserole point can always be kept very low.
  • the braiding structure becomes more complex along the length of a braided core Geometry significantly more constant or can be specifically influenced locally by the fact that the adaptation of the braiding ring shape takes place during the braiding process.
  • the six segments form the shape of a hexagon. So that no gap arises between the individual segments, two successive segments are arranged in different planes. Thus, three segments are arranged in a first and the other three segments in a second plane parallel to the first plane.
  • the segments are rotatably mounted according to claim 3 at its one end, wherein the other free end overlaps the articulation point of the subsequent segment. This ensures in conjunction with the embodiment according to claim 2 that no gap can form between the segments, which can lead to damage of the braiding threads or to a fault in the braid.
  • the segments may be straight, or bent according to claim 4 executed with the same or different radii of curvature.
  • the longitudinal groove according to claim 6 has a retracted edge region, so that the adjusting device can not be released from the longitudinal groove upwards.
  • the claims 7 and 8 describe two alternative adjustment. It makes sense to arrange respective opposite segments of the adjusting regardless of their design on a common line of action.
  • all segments can be arranged on one side of the retaining ring.
  • Fig. 1 a side view of a part of a braid core 1 is shown.
  • the braid core 1 has a longitudinal axis 2 and changing cross-sectional areas, which are not always arranged symmetrically to its longitudinal axis 2. Thus, it has in the peripheral region 3 a symmetrical circumferential cross-sectional enlargement, while in the peripheral region 4 has a one-sided bulge and in the peripheral region 5 has a one-sided depression. This is followed in the peripheral region 6 by a symmetrical constriction, which then increases symmetrically to the peripheral region 7 again.
  • the transitions between the individual areas are continuous, but they can also be stepped.
  • the transport direction of the braided core 1 is denoted by 8.
  • a braiding ring 11 is arranged near the casserole on the braid core 1. It deflects the braiding threads 9 tangentially to the surface of the braided core 1.
  • the braiding ring 11 is located in the immediate vicinity of the surface of the braided core 1. Due to the changing cross-sectional area of the braided core 1, it must be adjustable in its diameter.
  • Fig. 2 shows a schematic front view of the braiding ring 11 according to the invention in its construction. It consists of six segments 11a to 11f, which form the sides of a hexagon. Each segment 11 a to 11 f has a constant or varying radius of curvature. Instead of curved segments 11a to 11f also straight segments can be used.
  • Each segment 11 a to 11 f is rotatably mounted at one end 12 about a pivot point 13. So that the individual segments 11a to 11f can form an opening with a closed inner border in plan view, they are each arranged alternately in two parallel planes, as will be shown below. The end of each segment overlaps the beginning of the subsequent segment. In other words, the segment 11a lies in the front plane and ends behind the articulation point 13 of the segment 11b, the segment 11b lies in the rear plane and ends after the articulation point 13 of the segment 11c, which in turn lies in the front plane.
  • Each segment 11a to 11c is pivoted by its own adjusting device 14, which can be controlled separately.
  • Each adjustment device 14 preferably consists of an electromechanical, but also pneumatic or hydraulic spindle drive, which can be controlled by its own, suitable control device. The free end of the spindle engages the associated segment, as will be shown below.
  • the adjusting devices 14 of opposite segments lie on a common axis 15.
  • FIG. 3 shows a similar pivoting of all segments 11a to 11f, but can be generated via the separately controllable for each segment adjustment device 14 almost any cross-sectional shape, especially for complex Flechtkerngeometrien.
  • FIG. 4 a preferred technical realization of the braiding ring 11 according to the invention is shown.
  • the individual segments 11a to 11f are fastened with their adjusting devices 14 to a common retaining ring 16.
  • each second segment 11b, 11d, 11f is fastened to the retaining ring 16 via spacers 17, as clearly shown in FIG Fig. 4b you can see.
  • spacers 17 and a second spaced retaining ring is possible or an alternate attachment to the front and back of the retaining ring sixteenth
  • each segment 11a to 11f has a longitudinal groove 18, which is constricted at its upper edge 19.
  • the free end of the spindle 20 is displaceably arranged via a low-friction guide adapted to the cross section of the longitudinal groove 18.
  • the constriction 19 it is ensured that the spindle 20 can not drive out of the longitudinal groove 18 when driving back.
  • the segments 11 may also be mechanically connected to the associated adjustment device 14 on the side opposite the guide edge thereof.

Landscapes

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

Claims (10)

  1. Métier à tresser en particulier métier à tresses rondes destiné au surtressage d'un noyau de tressage (1) avançant régulièrement, et ayant une surface variable dans sa direction longitudinale comportant, au moins deux bobines de fils de tressage ainsi qu'un anneau de tressage (11) monté entre les bobines de tressage et le point d'application des fils de tressage sur le noyau de tressage, sur la surface interne duquel sont guidés les fils de tressage, et se composant de plusieurs segments réglables, chacun des segments réglables de l'anneau de tressage comportant un dispositif de réglage (14) qui lui est propre,
    caractérisé en ce que
    chaque dispositif de réglage (14) peut être commandé indépendamment des dispositifs de réglage (14) des autres segments (11a à 11f).
  2. Métier à tresser conforme à la revendication 1,
    caractérisé en ce que
    l'anneau de tressage (11) est subdivisé en six segments (11a à 11f) et les segments (11a à 11f) sont alternativement situés dans deux plans parallèles.
  3. Métier à tresser conforme à l'une des revendications précédentes, caractérisé en ce que
    chaque segment (11a à 11f) est monté mobile en rotation à une extrémité (12) et chevauche le segment suivant (11a à 11f) par son autre extrémité libre.
  4. Métier à tresser conforme à l'une des revendications précédentes, caractérisé en ce que
    les segments (11a à 11f) sont courbes.
  5. Métier à tresser conforme à l'une des revendications précédentes, caractérisé en ce que
    chaque segment (11a à 11f) comporte une rainure longitudinale (18) dans laquelle le dispositif de réglage (14) vient en prise de façon coulissante.
  6. Métier à tresser conforme à la revendication 5,
    caractérisé en ce que
    la rainure longitudinale (18) comporte une zone de bord supérieure resserrée (19).
  7. Métier à tresser conforme à l'une des revendications 5 et 6,
    caractérisé en ce qu'
    en tant que dispositif de réglage (14) il est prévu des unités cylindre-piston, et l'extrémité libre de chaque tige de piston glisse dans la fente longitudinale (18) du segment (11a à 11f) associé.
  8. Métier à tresser conforme à l'une des revendications 5 et 6,
    caractérisé en ce qu'
    en tant que dispositif de réglage (14) il est prévu des entraînements à broche électro-motorisés, et l'extrémité libre de chaque broche (20) glisse dans la rainure longitudinale (18) du segment (11a à 11f) associé.
  9. Métier à tresser conforme à l'une des revendications précédentes, caractérisé en ce que
    tous les dispositifs de réglage (14) sont montés sur un anneau de retenue (16) commun.
  10. Métier à tresser conforme à la revendication 9,
    caractérisé en ce que
    chaque second segment (11b, 11d, 11f) et son dispositif de réglage (14) associé est fixé sur l'anneau de retenue (16) par l'intermédiaire d'une douille d'écartement (17).
EP16711201.0A 2015-06-10 2016-03-15 Métier à tresser Active EP3307934B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015210581.4A DE102015210581A1 (de) 2015-06-10 2015-06-10 Flechtmaschine
PCT/EP2016/055549 WO2016198175A1 (fr) 2015-06-10 2016-03-15 Métier à tresser

Publications (2)

Publication Number Publication Date
EP3307934A1 EP3307934A1 (fr) 2018-04-18
EP3307934B1 true EP3307934B1 (fr) 2019-02-27

Family

ID=55588237

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16711201.0A Active EP3307934B1 (fr) 2015-06-10 2016-03-15 Métier à tresser

Country Status (6)

Country Link
US (1) US10526733B2 (fr)
EP (1) EP3307934B1 (fr)
JP (1) JP6516867B2 (fr)
CN (1) CN107407024B (fr)
DE (1) DE102015210581A1 (fr)
WO (1) WO2016198175A1 (fr)

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DE102015210581A1 (de) * 2015-06-10 2016-12-15 Bayerische Motoren Werke Aktiengesellschaft Flechtmaschine
CN106988009B (zh) * 2017-04-26 2022-10-18 西安工程大学 一种带有打紧和变径机构的三维筒状织机
DE102017219716A1 (de) 2017-11-07 2019-05-09 Bayerische Motoren Werke Aktiengesellschaft Verfahren zur Herstellung einer Flecht-Preform, Flecht-Preform, faserverstärktes Bauteil und Flechtmaschine
CN108584238A (zh) * 2018-06-16 2018-09-28 上海拓牛智能科技有限公司 垃圾袋打包机构及智能垃圾桶
US20240417898A1 (en) * 2023-06-13 2024-12-19 Apple Inc. Warp Knit and Braided Fabrics with Electrical Components
CN116623362B (zh) * 2023-06-30 2026-02-03 江苏恒神股份有限公司 一种编织工装及预制件编织方法

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Also Published As

Publication number Publication date
EP3307934A1 (fr) 2018-04-18
DE102015210581A1 (de) 2016-12-15
US20180016718A1 (en) 2018-01-18
CN107407024B (zh) 2019-07-16
US10526733B2 (en) 2020-01-07
JP6516867B2 (ja) 2019-05-22
CN107407024A (zh) 2017-11-28
JP2018519429A (ja) 2018-07-19
WO2016198175A1 (fr) 2016-12-15

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