EP1186690B1 - Broche et rotor de moteur intérgré - Google Patents

Broche et rotor de moteur intérgré Download PDF

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Publication number
EP1186690B1
EP1186690B1 EP01203201A EP01203201A EP1186690B1 EP 1186690 B1 EP1186690 B1 EP 1186690B1 EP 01203201 A EP01203201 A EP 01203201A EP 01203201 A EP01203201 A EP 01203201A EP 1186690 B1 EP1186690 B1 EP 1186690B1
Authority
EP
European Patent Office
Prior art keywords
spindle
motor
motor spindle
foreseen
bearings
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.)
Expired - Lifetime
Application number
EP01203201A
Other languages
German (de)
English (en)
Other versions
EP1186690A2 (fr
EP1186690A3 (fr
Inventor
Maurizio Gazzi
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.)
Ditta Michele Ratti SpA
Michele Ratti SpA
Original Assignee
Ditta Michele Ratti SpA
Michele Ratti SpA
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 Ditta Michele Ratti SpA, Michele Ratti SpA filed Critical Ditta Michele Ratti SpA
Publication of EP1186690A2 publication Critical patent/EP1186690A2/fr
Publication of EP1186690A3 publication Critical patent/EP1186690A3/fr
Application granted granted Critical
Publication of EP1186690B1 publication Critical patent/EP1186690B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/14—Details
    • D01H1/20—Driving or stopping arrangements
    • D01H1/24—Driving or stopping arrangements for twisting or spinning arrangements, e.g. spindles
    • D01H1/244—Driving or stopping arrangements for twisting or spinning arrangements, e.g. spindles each spindle driven by an electric motor
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H7/00—Spinning or twisting arrangements
    • D01H7/02—Spinning or twisting arrangements for imparting permanent twist
    • D01H7/04—Spindles
    • D01H7/045—Spindles provided with flexible mounting elements for damping vibration or noise, or for avoiding or reducing out-of-balance forces due to rotation
    • D01H7/048—Spindles provided with flexible mounting elements for damping vibration or noise, or for avoiding or reducing out-of-balance forces due to rotation with means using plastic deformation of members
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H7/00—Spinning or twisting arrangements
    • D01H7/02—Spinning or twisting arrangements for imparting permanent twist
    • D01H7/88—Hollow-spindle arrangements

Definitions

  • the present invention refers to a single-motor spindle or motor spindle for textile machines.
  • a way has been sought for introducing single-motor spindles onto textile machinery, to replace the traditional tangential belt controls for transferring motion from a central unit to the base of each spindle.
  • a halving of the speed corresponds indicatively to a four times greater mechanical power necessary for the rotation of the spindle; it can, therefore, be immediately understood how it is easy to work in the low zone of the input/output characteristic of asynchronous motors and how, moreover, the asynchronous motor, from a point of view energy consumption, poorly runs the operation in conditions far removed from the design conditions.
  • figure 1 in a single Cartesian graph, are shown the trends of the characteristics of yield in function of the load on the shaft of asynchronous bi-polar motors at the projected speed of 3000 revs/minute (curve PMA), of large asynchronous motors (curve GMA) and of motor spindles constructed for high velocities and each actuated by an asynchronous motor (curve MFA); on the same graph of figure 1 are also represented the indicative and exemplifying trends of a yield curve in function of the load on the shaft of a motor spindle with a synchronous motor (curve MFS).
  • the mechanical basis of the motor spindle follows that of the electric motor, in the sense that two bearings are foreseen at the ends of the rotor; outside of one of the aforementioned bearings then extends the technological part of the spindle.
  • one of the two bearings remains trapped between the rotor and the technological part of the spindle and, therefore, for it to be replaced it is necessary to disassemble the spindle itself and proceed to a readjustment thereof; moreover, the bearings are normally a short distance from the stator and feel the effects of the heat generated by its presence: the low yield of asynchronous motors, which generates greater heat loss, only exasperates the situation.
  • EP-A-1 002 891 motor spindle according to the preamble of claim 1.
  • EP-A-0 902 108 refers about a yarn winding machine that twists and winds yarn released from a yarn supply package.
  • a purpose of the present invention is, therefore, to disclose a single-motor spindle for textile machines which avoids the drawbacks quoted above, or rather to realise a single-motor spindle which allows a higher energy or yield efficiency to be obtained, with respect to the known solutions, in as wide a range of functional loads on the shaft as possible.
  • Another purpose of the present invention is to realise a single-motor spindle for textile machines which is extremely reliable and which, moreover, simplifies the mechanical structure of the whole textile machine, so that it is not necessary to employ highly specialised personnel for its maintenance and operation.
  • Another purpose of the invention is to disclose a single-motor spindle for textile machines which, with respect to the state of the art, allows a reduction in electrical energy consumption, increasing, at the same time, the service life and not neglecting, moreover, to solve the problems caused by unexpected power cuts.
  • a further purpose of the present invention is that of disclosing a single-motor spindle or motor spindle for textile machines which allows relatively simple replacement of mechanical parts and which does not require further adjustment operations.
  • a synchronous motor exhibits a characteristic of yield as a function of the speed and, thus, of yield as a function of the load (assuming there is a roughly quadratic relationship between load and speed), which is extremely regular and constant with respect to the corresponding characteristic of an asynchronous motor (regarding this, see the graph of figure 1 and compare the trends of the curves MFA and MFS).
  • the modular conception of the spindle's assembly allows rapid adjustment to the different configurations for the desired applications.
  • a single-motor spindle for textile machines or motor spindle, according to the present invention is wholly indicated with 20.
  • a double twist spindle with thread feeding packages of the "cops" type is referred to; however, it should be noted that the technical characteristics described in the present invention are equally applicable to any other textile application, relative, for example, to roving frames, covering machines and two-for-one twisters for technical threads, as well as two-for-one twisters for textile threads, which use feed packages with cylindrical bobbins, or "cheeses” (for medium and low twists).
  • a sleeve for supporting the stator of the motor spindle 20, which constitutes furthermore a lower closing shield for the motor, is indicated with 22, while two guide bushes, which are forced inside the support sleeve 22 are respectively indicated with 23 and 24; the bushes 23, 24 support a rotor stem 27 with the relative support bearings 10, 12, while, around the rotor stem 27 and in a determined position, two permanent ring-shaped magnets 29 are foreseen which surround a magnetic crown 3 of a Hall wave encoder, on which the magnetic poles are impressed: preferably, the ring magnets 29 are realised in plastoneodymium.
  • the rotating part 4 of the spindle 20 is attached to the rotor shaft 27 through the screw 26, while, in a position facing the ring magnets 29 and with a diameter slightly greater than said magnets, in compatibility with the mechanical tolerance of the spindle 20, a magnetic circuit of the stator 28 is foreseen, consisting, essentially, of a pack of small magnetic plates with low losses.
  • a three-phase electric winding 21 is positioned, which generates a rotating magnetic field; such a pack of small plates is housed inside the sleeve 22, which constitutes the whole structural casing of the motor spindle 20.
  • the bearings 11, 121, contained inside the sheath 5, which, in turn, is supported by the containing element 9, represent the containing elements of the static structure of the spindle 20, which is kept immobile through a pair of magnets installed outside the structure, according to technical solutions of the known type.
  • a ring for blocking the rotating part 4 a switch element (2) for spindles 20 of the universal type, and a bushed thread guide are indicated with 1, 2 and 6 respectively.
  • the "brushless" synchronous motor mounted on each spindle 20, having control of the angular position on its own axis, allows, when the spindle 20 stops, the bush 6 to be positioned so that it is turned towards the operator, in order to ease the threading operations.
  • Each spindle 20 has an electronic generator of the three-phase type, with variable voltage and frequency (not illustrated in the figures for the sake of simplicity), which can be installed outside or inside the spindle itself 20.
  • All the electronic generators are fed in parallel from a common bus, the voltage level of which is chosen so as to optimise the yield of the whole motor spindle 20.
  • the use of direct current is preferable in that it allows an energy reserve to be stored, using suitable condenser elements and/or storage batteries, and, in particular, partly exploiting the recovery of kinetic energy deriving from the motion of the spindles 20; this makes it possible to supply current even when there is no supply coming from the electrical equipment, so as to avoid the unwanted halting of the spindles 20 and the collection cylinders during the operation of the textile machines.
  • Suitable serial inlet and outlet lines allow the management of control means suitable, for example, for controlling the operation of the spindle 20 in the presence of thread (through signals originating from electrical or electronic sensors of the presence of thread) or for bringing the other accessories of the textile machine into line with the operational or rest state of the spindle 20.
  • the proposed solution allows many of the problems deriving from mechanical bases of the motor spindle of the traditional type to be solved.
  • the spindle and motor as a single entity, whereas the mechanics are based in three distinct and sequential zones: one support part, comprising bearings and dampers 10, 12, which is arranged in the lower portion of the motor spindle 20; an electric part, consisting of the two permanent magnets 29 of the rotor itself 27 and the magnetic crown 3 of the Hall wave encoder; a technological part, completely similar to that of a traditional spindle and arranged in the upper portion of the motor spindle 20.
  • This modular conception of spindle construction exhibits the principle advantage of allowing a rapid adjustment to the different configurations of spindles 20; since the support part is outside of the rotor stem 27, it is possible to equip the spindle 20 with different bearings without having to interfere with the rotor.
  • the canty-levered position of the bearing allows the temperature of the casing of the stator 22 to be kept to contained levels, since it is not positioned near to the windings 21; this guarantees a greater lifetime of the support bearings 10, 12.
  • the operation of the single-motor spindle for textile machines is substantially the following.
  • each spindle 20 allows a synchronous motor which is integrated in the spindle itself 20 to be used; this allows a rotation speed which is very precise and substantially independent from variations in load to be obtained.
  • the solution of the synchronous motor for the development of a motor spindle is that which most resembles traditional solutions; as a further advantage it has a very good yield even when the shaft holds a small load.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Claims (7)

  1. Broche de moteur (20) pour des machines textiles comprenant au moins un moteur synchrone qui est intégré dans la broche (20) et alimenté en tension et en fréquence variables par un générateur individuel,
       ladite broche de moteur (20) comprenant une partie de support, qui comprend une pluralité de premiers roulements et amortisseurs (10, 12), prévus dans une partie inférieure de la broche (20) et à l'extérieur d'une partie d'actionnement électrique, et une partie technologique agencée dans une partie supérieure de ladite broche de moteur (20), la partie d'actionnement électrique étant prévue entre la partie de support et la partie technologique, ledit moteur asynchrone comprenant au moins un élément de support (22) qui supporte un stator de la broche de moteur (20) et au moins un élément de rotor (27), caractérisé en ce que ledit élément de rotor (27) supporte lesdits premiers roulements et amortisseurs (10, 12), montés en porte-à-faux, et une partie rotative (4) est connectée à celui-ci dans l'extrémité de partie technologique, ladite broche de moteur (20) étant une broche textile à double torsion.
  2. Broche de moteur (20) selon la revendication 1, caractérisée en ce que, sur ledit élément de rotor (27) et à une position déterminée, au moins un aimant permanent (29) qui entoure au moins une couronne magnétique (3) d'un codeur, sur laquelle les pôles magnétiques sont imprimés, est prévu.
  3. Broche de moteur (20) selon la revendication 2, caractérisée en ce que, à une position faisant face audit aimant permanent (29), des circuits magnétiques du stator (28) sont prévus, chacun d'eux étant composé d'un ensemble de petites plaques magnétiques avec de faibles pertes, logés à l'intérieur dudit élément de support (22), dans les régions creuses entre lesquelles un enroulement triphasé électrique (21) est positionné, lequel génère un champ magnétique rotatif.
  4. Broche de moteur (20) selon la revendication 1, caractérisée en ce que ladite partie technologique comprend une série de deuxièmes roulements (11, 121), contenus à l'intérieur d'une gaine (5), qui, à son tour, est supportée par un élément conteneur (9) de la structure statique de la broche (20), qui est maintenue immobile par l'intermédiaire d'une série d'aimants installés à l'extérieur de ladite structure.
  5. Broche de moteur (20) selon la revendication 1, caractérisée en ce que ladite partie technologique comprend au moins une bague pour bloquer ladite partie rotative (4) et un élément de commutation (2) pour des broches de moteur (20) du type universel.
  6. Broche de moteur (20) selon la revendication 1, caractérisée en ce que ledit générateur individuel est composé d'un générateur électronique triphasé, avec une tension et une fréquence variables, connecté à l'alimentation en utilisant un courant alternatif monophasé ou triphasé ou un courant continu.
  7. Broche de moteur (20) selon la revendication 1, caractérisée en ce que des lignes série d'entrée et de sortie (30) sont prévues pour la gestion de moyens de commande, appropriés pour commander le fonctionnement de ladite broche (20) en présence d'un fil et pour amener des accessoires de ladite machine en ligne avec l'état de fonctionnement ou de repos de la broche (20), pour la gestion de paramètres de fonctionnement de ladite broche (20) et de ladite machine textile et pour l'intervention de signaux d'alarme pour des conditions critiques déterminées de la machine.
EP01203201A 2000-09-06 2001-08-23 Broche et rotor de moteur intérgré Expired - Lifetime EP1186690B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI001958 2000-09-06
IT2000MI001958A IT1318824B1 (it) 2000-09-06 2000-09-06 Fuso a motorizzazione singola per macchine tessili

Publications (3)

Publication Number Publication Date
EP1186690A2 EP1186690A2 (fr) 2002-03-13
EP1186690A3 EP1186690A3 (fr) 2002-09-25
EP1186690B1 true EP1186690B1 (fr) 2005-07-27

Family

ID=11445760

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01203201A Expired - Lifetime EP1186690B1 (fr) 2000-09-06 2001-08-23 Broche et rotor de moteur intérgré

Country Status (3)

Country Link
EP (1) EP1186690B1 (fr)
DE (1) DE60112198D1 (fr)
IT (1) IT1318824B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITFI20110203A1 (it) * 2011-09-22 2013-03-23 Giesse Srl Dispositivo per la produzione e raccolta su fusi di filato ciniglia

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE866166C (de) * 1939-03-23 1953-02-09 Siemens Ag Elektromotorischer Einzelantrieb fuer Zwirnspindeln u. dgl.
FR2646175B1 (fr) * 1989-04-25 1991-06-14 Icbt Lyon Broche de retordage entrainee par un moteur electrique individuel
DE4010376C2 (de) * 1990-03-30 1993-12-09 Kurt Prof Dr Ing Warbinek Antrieb, insbesondere Einzelspindelantrieb für eine Arbeitsstelle einer Ringspinnmaschine
JPH1181062A (ja) * 1997-09-02 1999-03-26 Murata Mach Ltd 糸条巻取機
JP2000154433A (ja) * 1998-11-20 2000-06-06 Toyota Autom Loom Works Ltd 紡機用単錘駆動スピンドル装置

Also Published As

Publication number Publication date
EP1186690A2 (fr) 2002-03-13
EP1186690A3 (fr) 2002-09-25
IT1318824B1 (it) 2003-09-10
ITMI20001958A1 (it) 2002-03-06
ITMI20001958A0 (it) 2000-09-06
DE60112198D1 (de) 2005-09-01

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