EP0840815B1 - Motorgetriebener fadenzwirnkopf - Google Patents

Motorgetriebener fadenzwirnkopf Download PDF

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Publication number
EP0840815B1
EP0840815B1 EP96927543A EP96927543A EP0840815B1 EP 0840815 B1 EP0840815 B1 EP 0840815B1 EP 96927543 A EP96927543 A EP 96927543A EP 96927543 A EP96927543 A EP 96927543A EP 0840815 B1 EP0840815 B1 EP 0840815B1
Authority
EP
European Patent Office
Prior art keywords
motor
motorized
head
electronic circuit
head according
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
EP96927543A
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English (en)
French (fr)
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EP0840815A1 (de
Inventor
Ezio Bertotto
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.)
Reel SRL
Original Assignee
Reel SRL
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Filing date
Publication date
Application filed by Reel SRL filed Critical Reel SRL
Publication of EP0840815A1 publication Critical patent/EP0840815A1/de
Application granted granted Critical
Publication of EP0840815B1 publication Critical patent/EP0840815B1/de
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

Definitions

  • the present invention relates to a motorized head for processing threads, of the type defined in the preamble of Claim 1.
  • Conventional machines for processing threads such as spinning machines, twisting machines, spiral covering machines, doubling machines, texturizing machines, winders, et cetera, use processing heads that have the purpose of supporting a spindle or spool of thread while the thread is wound up and subjected to twisting, spiral covering, doubling, or other similar operations.
  • Each head is essentially formed by a fixed support for the spindle and by a rotating part that moves the thread at high speed, on the order of 15,000 rpm.
  • the rotation is imparted by a single motor that transmits motion to a long row of heads, with rather antiquated transmission devices, such as for example annular belts that are placed in sliding contact with pulleys formed on the axis of the heads.
  • the speed of the single motor of the machine is controlled by means of an adapted electric circuit.
  • This arrangement has the advantage that if a power supply failure occurs, all the components decelerate in step and therefore do not produce tensions or breakages of the thread.
  • the conventional machines produce a very high noise and have low mechanical efficiency.
  • a machine of normal size can in fact have 100 to 300 heads driven simultaneously by these transmission devices, which are subject to considerable friction and impacts, and all together generate noise levels of up to 100 dB. Because of this, the assigned personnel must constantly wear protective earplugs or headsets, which however do not fully eliminate the risk of irreversible damage to the auditory system and often do not comply with health regulations.
  • US-A-5,161,361 discloses a brushless motor-driven assembly for textile ring spinning frame comprising all the features mentioned in the preamble of claim 1.
  • the motor of this known assembly is a variable reluctance motor without permanent magnets.
  • EP-A-0 389 117 relates to a drive for a spindle of a textile machine or ring frame, also including all the features defined in the preamble of claim 1.
  • the motor is of the variable reluctance type without permanent magnets thus involving the use of rotors of relatively large diameters and inertia.
  • the aim of the present invention is to eliminate the drawbaks described above by providing a motorized head with rotating spindle, particularly for thread processing, that features low noise, high efficiency, low cost, and very compact size, minimizing the risk of breakage of threads during power supply transient caused by failure or gaps in the mains.
  • a head of this type produces low noise because it avoids conventional-type transmission devices, and has low consumption because of the use of electrically highly efficient brushless motors.
  • a head of this type also has a high precision due to the fact that it uses a separate control circuit.
  • the present head overcomes the problem of lack of synchronization generated by power supply transients in the mains.
  • the speed and power supply control circuit of the motor is a miniaturized frequency converter, built into the frame of the motor.
  • the power supply current of the control circuit of the converter and the current that supplies power to the motor are both at low voltage, eliminating all risks for the assigned personnel.
  • a head according to the invention comprises a hollow pivot 2 that acts as support for a spindle or reel 3 of thread and is open in an upper region to allow the passage of a thread 4.
  • the lower part of spindle 3 is surrounded by a rotor 5 that has a hollow central shaft 6 that is connected to pivot 2 and to a radial hole 7 for the passage of thread 4.
  • Shaft 6 of rotor 5 is directly coupled to an actuation motor 8.
  • shaft 6 is formed monolithically from the shaft of motor 8.
  • Motor 8 can be provided with studs 9 for anchoring the entire head to a supporting frame 10 of a thread processing machine, for example a twisting machine, so as to allow interchangeability of the head 1 with other heads of the same type.
  • a frequency-variation speed converter 11 is associated with motor 8 to control the power supply and the speed of the motor, promptly adapting them, without any manual or mechanical actuation of the coupling to the motor, as a function of the type and thickness of the thread to be processed. It also ensures extremely accurate speed control, with an error of less than 1% with respect to the preset speed.
  • converter 11 is miniaturized so that it is inserted and integrated in the frame of motor 8 and so as to be supplied together with it, achieving great compactness with respect to previous heads.
  • Central unit 14 also internally comprises a closed-loop regulator circuit 17, using for example a P.I.D. regulator, which has the purpose of synchronizing the deceleration of the individual heads with the deceleration of the other devices associated with them if mains power fails; this circuit is of the type described and claimed in the Italian patent application No. VI95A000112 in the name of this same Applicant.
  • a closed-loop regulator circuit 17 using for example a P.I.D. regulator, which has the purpose of synchronizing the deceleration of the individual heads with the deceleration of the other devices associated with them if mains power fails; this circuit is of the type described and claimed in the Italian patent application No. VI95A000112 in the name of this same Applicant.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Claims (7)

  1. Motorgetriebener Fadenzwirnkopf für Mehrkopf-Spinnmaschinen für die Spinn- oder Zwirnbearbeitung von Garnen oder dergleichen, wobei jeder Kopf umfaßt einen Lagerzapfen (2) für eine Fadenspindel oder Fadenspule, einen mit dem Rotor (5) verbundenen und diesen in Drehung versetzenden Motor, wobei der Rotor (5) koaxial zu dem Lagerzapfen (2) angeordnet ist und zum Aufwickeln und Verdrillen des Garnes dient und wobei der Motor aus einem einzigen, bürstenlosen Hochleistungsmotor (8) besteht, der mit dem Rotor (5) gekuppelt ist, eine elektronische Steuerschaltung (11) für die Geschwindigkeit und die Spannungsversorgung des Motors (8) unabhängig von den Schaltungen der anderen Köpfe, welche Steuerschaltung (11) aus einem miniaturisierten Frequenzwandler besteht, der in das Motorgehäuse integriert ist, dadurch gekennzeichnet, daß jeder Kopf mit anderen motorgetriebenen Vorrichtungen wie Fadenführungsösen oder Wickelorganen verbunden ist, daß der bürstenlose Motor (8) zylindrisch ausgebildete Permanentmagnete hat und daß die elektronische Schaltung (11) Mittel für die Verbindung mit einer äußeren, geschlossenen Regelschaltung (17) hat, die die Geschwindigkeit des Kopfes mit den Geschwindigkeiten der anderen, damit verbundenen Vorrichtungen im Fall von Ausfällen oder Löchern in der Spannungsversorgung synchronisiert.
  2. Motorgetriebener Kopf nach Anspruch 1, dadurch gekennzeichnet, daß der Rotor (5) eine einstückig mit der Welle des Motors (8) ausgebildete Welle (6) hat.
  3. Motorgetriebener Kopf nach Anspruch 1, dadurch gekennzeichnet, daß die Welle (6) hohl und mit einer radialen Bohrung (7) für den Durchtritt des Fadens (4) ausgebildet ist.
  4. Motorgetriebener Kopf nach Anspruch 2, dadurch gekennzeichnet,- daß die Stromversorung sowohl für die elektronische Steuerschaltung (11) als auch für den Motor (8) eine niedrige Spannung hat.
  5. Motorgetriebener Kopf nach Anspruch 4, dadurch gekennzeichnet, daß die elektronische Steuerschaltung (11) und die äußere, geschlossene Regelschaltung (17) mit einer programmierbaren Zentraleinheit (14) für die Steuerung der Betriebsparameter der einzelnen Köpfe verbunden sind.
  6. Motorgetriebener Kopf nach Anspruch 1, dadurch gekennzeichnet, daß die Mittel für die Verbindung zwischen der elektronischen Steuerschaltung (11) und der äußeren, geschlossenen Regelschaltung (17) serieller Bauart oder Schieberegisterverbindungen sind.
  7. Motorgetriebener Kopf nach Anspruch 4 oder 6, dadurch gekennzeichnet, daß die elektronische Steuerschaltung (11), die äußere, geschlossene Regelschaltung (17) und die Zentraleinheit (14) Mikroprozessoren sind.
EP96927543A 1995-07-26 1996-07-18 Motorgetriebener fadenzwirnkopf Expired - Lifetime EP0840815B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT95VI000122A IT1281615B1 (it) 1995-07-26 1995-07-26 Testa motorizzata per lavorazioni dei filati
ITVI950122 1995-07-26
PCT/EP1996/003169 WO1997005310A1 (en) 1995-07-26 1996-07-18 Motorized yarn twisting head

Publications (2)

Publication Number Publication Date
EP0840815A1 EP0840815A1 (de) 1998-05-13
EP0840815B1 true EP0840815B1 (de) 1999-10-06

Family

ID=11425834

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96927543A Expired - Lifetime EP0840815B1 (de) 1995-07-26 1996-07-18 Motorgetriebener fadenzwirnkopf

Country Status (6)

Country Link
EP (1) EP0840815B1 (de)
JP (1) JPH11509897A (de)
AU (1) AU6734396A (de)
DE (1) DE69604590T2 (de)
IT (1) IT1281615B1 (de)
WO (1) WO1997005310A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69932961T2 (de) * 1998-03-13 2007-05-10 Murata Kikai K.K. Textilmaschine mit Einzelspindelantrieb wobei die Spindelantriebe in modularen Einheiten aufgeteilt sind.
DE10257980B4 (de) * 2002-01-18 2016-01-14 Heidelberger Druckmaschinen Ag Spannungsversorgungsmanagement in papierverarbeitenden Maschinen

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3717749A1 (de) * 1987-05-26 1988-12-15 Zubler Geraetebau Verfahren zur aktiven fadenbruchverhinderung an spinn-, zwirn- und spulmaschinenantrieben sowie deren vollautomatisches ausregeln auf maximale produktionsdrehzahlen
GB2229458A (en) * 1989-03-23 1990-09-26 Hollingsworth Ring spinning,ring doubling and ring twisting frames
FR2646175B1 (fr) * 1989-04-25 1991-06-14 Icbt Lyon Broche de retordage entrainee par un moteur electrique individuel
US5161361A (en) * 1991-08-30 1992-11-10 Platt Saco Lowell Corporation Motor-driven spindle assembly for ring spinning
DE4315775C2 (de) * 1992-05-29 1994-12-08 Skf Textilmasch Komponenten Spindel in Textilmaschinen zur Garnherstellung
DE4224755A1 (de) * 1992-07-27 1994-02-03 Budig Peter Klaus Prof Dr Sc T Steuersystem für eine Maschine, insbesondere Textilmaschine
JPH07111757A (ja) * 1993-10-13 1995-04-25 Hitachi Ltd ブラシレスｄｃモートル

Also Published As

Publication number Publication date
ITVI950122A1 (it) 1997-01-26
DE69604590T2 (de) 2000-07-13
DE69604590D1 (de) 1999-11-11
IT1281615B1 (it) 1998-02-20
JPH11509897A (ja) 1999-08-31
AU6734396A (en) 1997-02-26
EP0840815A1 (de) 1998-05-13
ITVI950122A0 (it) 1995-07-26
WO1997005310A1 (en) 1997-02-13

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