EP3739091B1 - Disque de friction pour un dispositif de fausse torsion - Google Patents

Disque de friction pour un dispositif de fausse torsion Download PDF

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Publication number
EP3739091B1
EP3739091B1 EP20174096.6A EP20174096A EP3739091B1 EP 3739091 B1 EP3739091 B1 EP 3739091B1 EP 20174096 A EP20174096 A EP 20174096A EP 3739091 B1 EP3739091 B1 EP 3739091B1
Authority
EP
European Patent Office
Prior art keywords
hub
friction disc
friction
race
false
Prior art date
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Active
Application number
EP20174096.6A
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German (de)
English (en)
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EP3739091A1 (fr
Inventor
Florian Baus
Jiying Li
Günter Zeitz
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.)
Rieter Components Germany GmbH
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Rieter Components Germany GmbH
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
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Publication of EP3739091A1 publication Critical patent/EP3739091A1/fr
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Publication of EP3739091B1 publication Critical patent/EP3739091B1/fr
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H7/00—Spinning or twisting arrangements
    • D01H7/92—Spinning or twisting arrangements for imparting transient twist, i.e. false twist
    • D01H7/923—Spinning or twisting arrangements for imparting transient twist, i.e. false twist by means of rotating devices
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/04—Devices for imparting false twist
    • D02G1/08—Rollers or other friction causing elements
    • D02G1/082—Rollers or other friction causing elements with the periphery of at least one disc
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/0206—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting
    • D02G1/0266—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting false-twisting machines
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/04—Devices for imparting false twist
    • D02G1/06—Spindles
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/04—Devices for imparting false twist
    • D02G1/08—Rollers or other friction causing elements
    • D02G1/087—Rollers or other friction causing elements between the flanks of rotating discs

Definitions

  • the invention relates to a friction disk for a false twist device with an annular hub on which a circular raceway formed by a PU layer with a minimum wall thickness necessary for a secure form fit can be fixed, wherein the hub has a circumferential support ring and a central bore via which the friction disk can be fixed on one of the shafts of the false twist device.
  • False twisting devices have proven to be effective in generating the false twist, in which the thread is guided along the circumferential surfaces of several rotating, overlapping friction disks during the twisting process.
  • the friction disks are usually arranged on three shafts, which in turn are supported in a bearing block so that they can rotate.
  • the shafts are arranged at a distance from one another in a triangle such that the friction disks overlap in the center of the triangle.
  • the shafts are driven by a drive such that the friction disks rotate at a constant peripheral speed.
  • the thread subjected to frictional engagement at a relatively high transport speed, runs over the cooperating friction disks, which rotate at circumferential speeds of >2000 m/min.
  • Friction discs are also known in which the wear of the bearing rings is to be reduced by adding a fine powder substance to the rubber-elastic material of the bearing rings.
  • a comparable friction disc is also available in the EN 10 2005 050 068 A1 described.
  • the friction discs each have a so-called bushing carrier, which is surrounded by a ring made of friction material.
  • the friction material is formed by a composite of a polyurethane and a ceramic material. This means that ceramic nanoparticles are embedded in a base material made of polyurethane.
  • EP 1 082 475 B1 discloses friction discs whose manufacturing process is optimized by the fact that both the hub and the race are manufactured using injection molding technology. This means that a hub is first manufactured from a hard thermoplastic using an injection molding process and then a race is created on the hub, also using an injection molding process. Further information can be found in the documents DE 198 15 578 C1 and DE 100 46 525 A1 .
  • the race is formed by a layer of aramid-filled thermoplastic polyurethane, which is mechanically fixed to the hub after the injection molding process and has an almost uniform, relatively thin layer thickness. Friction discs manufactured in this way are Although they are relatively advantageous in terms of their production costs, further improvements are possible with regard to their service life and running characteristics.
  • the invention is based on the object of improving the known friction disks of false twisting devices in such a way that they are not only inexpensive to manufacture and have a relatively long service life, but that they are also very advantageous in terms of their running behavior.
  • the heat development that is unavoidable during the false twisting process should be minimized in the friction disks according to the invention.
  • the race is ground according to a predeterminable profile such that the flanks of the race have a predeterminable width after the grinding process and/or the hub has a circumferential shoulder at a distance from the support ring for the attachment for the fixable PU layer, wherein a cross-sectional width of the shoulder is smaller than a cross-sectional width of the support ring.
  • the embodiment of a friction disk according to the invention has the particular advantage that the friction disk is optimized in terms of its geometry and use of material, whereby a significantly lower surface temperature can be generated during the texturing process as a result of the improved flow situation, which has a positive effect on both the running behavior and the service life of the friction disks. Furthermore, the reduced temperature, viewed across the number of friction disks on a spinning machine, promotes energy savings.
  • machine cV% is understood to be the average deviation of the thread tension from position to position of the texturing machine. This means that the lower and more uniform the machine cV% of a texturing machine is, the better the quality of the yarn that can be produced on this textile machine, especially with regard to later dyeing results of the yarn.
  • the defined design of the rotating attachment ensures that advantageous flow conditions can be achieved in the area of the rotating friction disk, which also has a positive effect on the machine cV% during the texturing process.
  • Such a new hub shape which is improved compared to the hubs of previously known friction discs, can ensure greater rigidity and strength, which also has a positive effect on the grinding process of the flanks of the race.
  • the new geometry of the hub of the friction disk leads to a larger surface area, which results in a lower disk temperature during the texturing process, which has a positive effect on the running behavior and service life of the friction disk, or can be used to increase the production of the texturing machine by increasing the speed of the friction disks.
  • the width of the flanks of the race is equal to, and preferably smaller than, the maximum cross-sectional width of the hub.
  • the wall thickness of the PU layer of the race is minimized to the minimum wall thickness required for secure positive locking.
  • the optimal minimization of the minimum wall thickness of the race that can be achieved in this way not only allows the wear layer designed as a PU layer to adhere securely to the carrier designed as a hub, but also advantageously causes a further reduction in the swelling of the PU layer and the surface temperature during the texturing process.
  • the hub is made of a plastic, preferably PBT 40% GK natural.
  • PBT polybutylene terephthalate
  • PBT polybutylene terephthalate
  • the hub is made of a plastic, preferably PBT 40% GK natural.
  • PBT polybutylene terephthalate
  • PBT polybutylene terephthalate
  • PBT polybutylene terephthalate
  • PBT polybutylene terephthalate
  • PBT polybutylene terephthalate
  • PBT polybutylene terephthalate
  • PBT polybutylene terephthalate
  • the PU layer of the friction disc race has a hardness of at least or equal to 85 Shore A.
  • a Shore hardness not only ensures a relatively high wear resistance of the race, but also ensures that there is sufficient frictional resistance between the running ring and the yarn to be processed, thus ensuring that the yarn is properly twisted at all times during the texturing process.
  • the friction disk preferred according to one of the embodiments described above also enables an improved air exchange of the ambient air prevailing between the adjacent friction disks during operation, which heats up during operation of the friction disks, with the cooler ambient air outside the friction disks.
  • the cooling effect of the friction disk can be improved in that the hub has at least one passage which passes through the hub for the predetermined conduction of the air flowing through the passage when the friction disk is rotating. Both surface sides of the hub are therefore connected to one another via the passage.
  • the passage enables the predetermined conduction of an air flow generated as a result of the rotation of the friction disk, the ambient air surrounding the hub, which is entrained along with it, whereby the hub can be suitably cooled not only on the surface side, but also along the profile thickness running in the axial direction of the friction disk.
  • the at least one passage is designed in such a way that the air flowing through the passage during rotation of the friction disk is directed in the direction of another friction disk of the false twist device arranged adjacent to the friction disk.
  • This enables cooling not only of the friction disk itself, but also of the adjacent friction disk.
  • different friction disks can be used with a false twist device, some with a cooling effect and some without a cooling effect, whereby these can be arranged alternately along a shaft in a particularly preferred manner in order to achieve an improved cooling effect.
  • the hub preferably forms a fan shape with a plurality of passages which are separated from one another by a partition wall which has a predetermined blade geometry for the defined guidance of the air flowing through.
  • a respective partition wall which separates two adjacent passages from one another forms a fan blade for the defined guidance of the air flow generated from the entrained ambient air during the rotation of the friction disk through the respective passage.
  • the respective partition wall is preferably fixed to the end face arranged in the radial direction of the friction disk near the central bore of the friction disk with which the central bore forming the frame of the base body and on the opposite end face in the radial direction, which is close to the support ring, with the section of the base body carrying the support ring or alternatively with the extension running around at a distance from the support ring.
  • the respective fan blade preferably has an aerodynamic profile, more preferably with an inflow edge bent in the radial and/or axial direction of the friction disk and/or an outflow edge bent in the radial and/or axial direction of the friction disk.
  • the number of partition walls provided is preferably odd, with particularly preferably five or seven partition walls being provided, which are preferably evenly distributed around the central bore.
  • the fan shape with the blade geometry is selected such that the fan shape forms an axial or diagonal fan, which takes the ambient air from one side of the friction disk and blows it out on the other side of the friction disk in the axial direction of the friction disk or in a diagonal direction.
  • the fan shape according to one of the preferred embodiments has proven to be particularly advantageous for the cooling and consequently the service life of the false twist device equipped with such a friction disk. This is because the improved cooling effect reduces the wear of the friction disk, since the temperature-dependent chemical load on the friction disk during the spin preparation can be reduced. This is because the higher the temperature of the friction disk, the faster the chemical reactions on the friction disk associated with the spin preparation take place, which cause increased wear on the friction disk. Furthermore, by providing friction disks that provide cooling, an external cooling air supply that would otherwise be required, for example by providing separate, space-consuming fans or similar, can be dispensed with.
  • the friction disk has a PU layer with a thermally conductive material, such as aluminum. This can also achieve a cooling effect. In conjunction with the fan shape, the cooling effect can be further improved.
  • a false twisting device which comprises a bearing block which has at least one rotatably mounted shaft which has at least two friction disks arranged along the shaft at a distance from one another, wherein one of the friction disks, in particular the friction disk arranged furthest from the bearing block, is a friction disk with cooling effect according to one of the above preferred embodiments.
  • the False twist device has three shafts, each of which is rotatably supported and driven in the bearing block.
  • the shafts are further preferably arranged at a distance from one another in a triangle such that the friction disks arranged on the shafts overlap in the center of the triangle. This makes it possible to provide a self-cooling false twist device with an increased service life.
  • the Figure 1 shows schematically in perspective view an embodiment of a false twist device 1, as used for example in texturing machines in connection with the production of crimped textile threads 3.
  • such false twist devices 1 each have a bearing block 2 with several rotatably mounted shafts 4, which are connected at the end to a Fig.1 not shown, drive.
  • Such drives for false twist devices are known and are used, for example, in the EP 0 744 480 A1 described in relatively great detail.
  • each of the shafts 4 is equipped with friction disks 5, are arranged in such a way that they form a triangle.
  • each of the shafts 4 has three friction disks 5 arranged one behind the other at a distance in the running direction F of the thread 3.
  • FIGS. 2 - 4 show on a larger scale and in different views a hub 6 made of plastic of a friction disk 5 according to an embodiment.
  • the hubs 6 of such friction disks 5 each have an annular base body 13 made from a plastic by injection molding with a central bore 8.
  • the diameter of this central bore 8 is matched to the diameter of the shafts 4 of the false twist device 1, so that friction disks 5 can be easily positioned on the shafts 4 of a false twist device 1 after their completion.
  • such hubs 6 each have an outer, circular support ring 7 and, spaced from this support ring 7, a projection 11 which also runs around the circumference. Between the support ring 7 and the projection 11, a plurality of locking openings 12, eighteen in the exemplary embodiment, are also arranged in the base body 13 of the hub 6. These locking openings 12 serve, as will be explained below, to fix a Figures 5 and 6 shown race ring 9 of the friction disc 5, consisting of a PU layer.
  • the Figures 3 and 4 show the hub 6 of a friction disk 5 in section.
  • the Fig.3 shows the hub 6 according to section B - B of the Fig.2
  • Fig.4 the hub 6 according to section A - A of the Fig.2 is shown.
  • the base body 13 of the hub 6 has its maximum cross-sectional width BN in the area of the central bore 8, while the cross-sectional width BS of the outer, circumferential support ring 7 of the hub 6 is slightly below the maximum cross-sectional width BN of the hub 6.
  • the base body 13 of the hub 6 has a projection 11 which is arranged at a distance from the support ring 7 and also runs all the way around, the cross-sectional width BA of which is slightly less than the cross-sectional width BS of the support ring 7.
  • the Fig.5 shows a section through a finished friction disk 5 according to an embodiment, that is, a friction disk 5 having a hub 6 made of PBT using the injection molding process, which is surrounded by a race 9 also made using the injection molding process.
  • the flanks 10 of the race ring 9 in the area of the support ring 7 are ground to a predefined width dimension BFL.
  • the width dimension BFL of the flanks 10 of the race ring 9 is slightly smaller than the maximum cross-sectional width BN of the hub 6.
  • a friction disk 5 according to an embodiment is shown in a perspective view approximately on a scale of 1:1.
  • This friction disk 5 has, as already explained above, a hub 6 made of a plastic with a central bore 8 and a race 9 also made of a plastic.
  • the hub 6, which is manufactured using the injection molding process, advantageously consists of PBT (polybutylene terephthalate) 40% GK natural, while the race 5 consists of a PU layer, which preferably has a hardness of at least or exactly 85 Shore A.
  • Fig.7 shows a friction disc 5 according to a further preferred embodiment in section, which is approximately equal to the friction disc 5 according to Fig.6 is formed, the only difference being in the design of the hub 6.
  • Fig.7 shows a friction disc 5 according to a further preferred embodiment in section, which is approximately equal to the friction disc 5 according to Fig.6 is formed, the only difference being in the design of the hub 6.
  • the hub 6 is formed as an axial fan, wherein the base support section between the central bore 8 and the projection 11 has a plurality of fan blades 15 circumferentially around the central bore 8, in particular evenly distributed, which have an aerodynamic profile for the defined conduction of the ambient air from one side of the friction disk 5 to the other side.
  • Fig.8 shows in this context a schematic partial sectional view of a fan blade 15 of the friction disc 5 according to Fig.7 in a perspective from the central bore 8 in the direction of the support ring 11.
  • the friction disk 5 according to this preferred embodiment promotes a cooling effect of both the friction disk 5 and the false twist device in which such a friction disk 5 is used.
  • the friction disk 5 according to this embodiment can be used in a Fig.1 shown false twist device 1 can be used.
  • Such an arrangement allows cooling of the friction disks 5 arranged downstream in the thread running direction F as well as the bearing block 2 in which the drive for the shafts 4 can be housed during rotation of the friction disk 5 equipped with the hub 6 designed as a fan. This has a beneficial effect on both the wear and the service life of the friction disks 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Rolling Contact Bearings (AREA)
  • Mechanical Operated Clutches (AREA)

Claims (10)

  1. Disque de friction (5) pour un dispositif de fausse torsion (1), avec un moyeu annulaire (6) sur lequel peut être fixée une bague à billes circulaire (9) pouvant être formée par une couche de PU avec une épaisseur de paroi minimale nécessaire pour un verrouillage mécanique sûr, le moyeu (6) présentant une bague de support périphérique (7) ainsi qu'un alésage central (8) par le biais duquel le disque de friction (5) peut être fixé sur l'un des arbres (4) du dispositif de fausse torsion (1),
    caractérisé en ce que
    la bague à billes (9) formée et fixée sur le moyeu (6) est meulée selon un profil prédéfinissable de telle sorte que les flancs (10) de la bague à billes (9) présentent une dimension en largeur prédéfinissable (BFL) après le processus de meulage ; et/ou
    le moyeu (6) présente à distance de la bague de support (7) un épaulement périphérique (11) pour l'appui pour la couche de PU pouvant être fixée, une largeur de la section transversale (BA) de l'épaulement (11) étant inférieure à une largeur de la section transversale (BS) de la bague de support (7).
  2. Disque de friction (5) selon la revendication 1, caractérisé en ce que la dimension en largeur (BFL) des flancs (10) de la bague à billes (9) formée et fixée sur le moyeu (6) est égale ou inférieure à la largeur de la section transversale maximale (BN) du moyeu (6).
  3. Disque de friction (5) selon la revendication 2, caractérisé en ce que l'épaisseur de paroi de la couche de PU de la bague à billes (9) est minimisée à l'épaisseur de paroi minimale nécessaire pour le verrouillage mécanique sûr.
  4. Disque de friction (5) selon la revendication 1, caractérisé en ce que le moyeu (6) est fabriqué en plastique.
  5. Disque de friction (5) selon la revendication 4, caractérisé en ce que le moyeu (6) est fabriqué en PBT (polybutylène téréphtalate).
  6. Disque de friction (5) selon la revendication 1, caractérisé en ce que la couche de PU de la bague à billes (9) formée et fixée sur le moyeu (6) présente une dureté d'au moins 85 Shore A.
  7. Disque de friction (5) selon la revendication 1, caractérisé en ce que le moyeu (6) présente au moins un passage qui traverse le moyeu (6) pour la conduite prédéfinie de l'air traversant le passage en fonctionnement rotatif du disque de friction (5).
  8. Disque de friction (5) selon la revendication 7, caractérisé en ce que l'au moins un passage est formé de telle sorte que l'air traversant le passage en fonctionnement rotatif du disque de friction (5) conduit en direction d'un autre disque de friction (5) du dispositif de fausse torsion (1) disposé de manière adjacente au disque de friction (5).
  9. Disque de friction (5) selon la revendication 7 ou 8, caractérisé en ce que le moyeu (6) forme une forme de ventilateur avec une pluralité de passages qui sont séparés les uns des autres par une paroi de séparation qui présente une géométrie de pale prédéfinie pour la conduite définie de l'air traversant.
  10. Dispositif de fausse torsion (1) comprenant un bloc de palier (2) avec au moins un arbre (4) monté à rotation comprenant au moins deux disques de friction (5) disposés le long de l'arbre (4) sur celui-ci à distance l'un de l'autre, caractérisé en ce que l'un des disques de friction (5) est un disque de friction (5) selon la revendication 8 ou 9.
EP20174096.6A 2019-05-16 2020-05-12 Disque de friction pour un dispositif de fausse torsion Active EP3739091B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019112892.7A DE102019112892A1 (de) 2019-05-16 2019-05-16 Friktionsscheibe für eine Falschdrallvorrichtung

Publications (2)

Publication Number Publication Date
EP3739091A1 EP3739091A1 (fr) 2020-11-18
EP3739091B1 true EP3739091B1 (fr) 2024-04-17

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EP20174096.6A Active EP3739091B1 (fr) 2019-05-16 2020-05-12 Disque de friction pour un dispositif de fausse torsion

Country Status (5)

Country Link
US (1) US20200362482A1 (fr)
EP (1) EP3739091B1 (fr)
JP (1) JP2020186507A (fr)
CN (1) CN111945266B (fr)
DE (1) DE102019112892A1 (fr)

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DE3109413A1 (de) * 1981-03-12 1982-09-30 FAG Kugelfischer Georg Schäfer & Co, 8720 Schweinfurt Vorrichtung zum falschdrallen
DE3500208A1 (de) * 1985-01-05 1986-07-10 Manfred A. 8721 Euerbach Kress Friktions-texturierelement
DE8532434U1 (de) * 1985-11-16 1986-01-02 FAG Kugelfischer Georg Schäfer KGaA, 8720 Schweinfurt Reibrotor zum Falschdrallen von synthetischen Fäden
CN2046126U (zh) * 1988-01-25 1989-10-18 余振浩 活圈式聚氨酯摩擦盘
US5224642A (en) * 1991-12-11 1993-07-06 Davis Steven D Pull wheel having spaced apart flanges with an elastomer thereon
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JP3283943B2 (ja) * 1993-02-15 2002-05-20 北辰工業株式会社 フリクションディスク
CN2207393Y (zh) * 1994-09-21 1995-09-13 刘桂兰 一种假捻器摩擦盘
DE59603042D1 (de) * 1995-05-23 1999-10-21 Barmag Barmer Maschf Falschdrallaggregat
KR20000069096A (ko) * 1997-09-26 2000-11-25 이.파우. 뢰르허 가연기
DE19814921A1 (de) * 1998-04-03 1999-10-07 Temco Textilmaschkomponent Geometrische Anordnung für eine Texturiervorrichtung
DE19815578C1 (de) * 1998-04-07 1999-08-26 Heberlein Fasertech Ag Drallscheibe sowie Verfahren zur Herstellung einer Drallscheibe
DE10046525C2 (de) * 2000-09-19 2003-04-30 Freudenberg Carl Kg Stützscheibe
DE10108416A1 (de) * 2001-02-21 2002-08-29 Rieter Ingolstadt Spinnerei Stützscheibengrundkörper zur Lagerung eines Offenend-Spinnrotors
DE10343619A1 (de) * 2003-09-20 2005-04-14 Saurer Gmbh & Co. Kg Falschdrallvorrichtung
DE102005050068A1 (de) * 2005-10-19 2007-04-26 Saurer Gmbh & Co. Kg Friktionsscheibe
JP5051675B1 (ja) * 2012-02-27 2012-10-17 義一 後藤 摩擦仮撚ディスク
CN204874960U (zh) * 2015-06-30 2015-12-16 杭州永兴化纤有限公司 自散热假捻器的摩擦盘
CN205062303U (zh) * 2015-09-01 2016-03-02 常州欣战江特种纤维有限公司 一种生产粗旦纤维的假捻变形器
DE102018101755A1 (de) * 2018-01-26 2019-08-01 Hörmann KG Brockhagen Tor
CN208104640U (zh) * 2018-03-06 2018-11-16 绍兴易纺机械制造有限公司 一种摩擦盘式假捻装置

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Publication number Publication date
CN111945266B (zh) 2023-01-06
JP2020186507A (ja) 2020-11-19
CN111945266A (zh) 2020-11-17
DE102019112892A1 (de) 2020-11-19
EP3739091A1 (fr) 2020-11-18
US20200362482A1 (en) 2020-11-19

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