EP0476770A1 - Dispositif d'entrainement de broches dans un métier à filer à anneaux ou similaire - Google Patents

Dispositif d'entrainement de broches dans un métier à filer à anneaux ou similaire Download PDF

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Publication number
EP0476770A1
EP0476770A1 EP91202353A EP91202353A EP0476770A1 EP 0476770 A1 EP0476770 A1 EP 0476770A1 EP 91202353 A EP91202353 A EP 91202353A EP 91202353 A EP91202353 A EP 91202353A EP 0476770 A1 EP0476770 A1 EP 0476770A1
Authority
EP
European Patent Office
Prior art keywords
belts
drive
spindles
pulleys
pair
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.)
Granted
Application number
EP91202353A
Other languages
German (de)
English (en)
Other versions
EP0476770B1 (fr
Inventor
Luigi Pezzoli
Santino Cossandi
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.)
Fratelli Marzoli and C SpA
Original Assignee
Fratelli Marzoli and C 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 Fratelli Marzoli and C SpA filed Critical Fratelli Marzoli and C SpA
Publication of EP0476770A1 publication Critical patent/EP0476770A1/fr
Application granted granted Critical
Publication of EP0476770B1 publication Critical patent/EP0476770B1/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
    • D01H1/241—Driving or stopping arrangements for twisting or spinning arrangements, e.g. spindles driven by belt

Definitions

  • This invention relates to a device for driving the spindles in a ring spinning machine or the like.
  • This known arrangement also has the drawback that the winding angle of the main belt about the drive pulleys of the drive units is limited and cannot exceed a certain value because of the arrangement of the deviation pulleys. The result is that for equal spindle numbers and characteristics, a greater number of drive units is generally required to prevent slippage.
  • the object of the present invention is to overcome these drawbacks and limitations by providing a drive device of the stated type by which the drive conditions of the various spindles are improved in the sense of preventing slippage as far as possible, within the context of low constructional effort and cost.
  • a device for driving the spindles in a ring spinning machine or the like in which the spindles are rotated by tangential contact between respective spindle pulleys and an endless drive belt characterised in that several pairs of drive belts are provided, the belts of each pair rotating an equal number of spindles on the two faces of the spinning machine, each pair being driven by its own drive member arranged substantially symmetrical to the paths of the belts of the respective pair.
  • the two belts of each pair pass about the same drive pulley on circumferentially opposite sides thereof and in different planes, so that the entire periphery of the drive pulley is used for traction, which would not be possible with a single belt wound as in the known art.
  • the result is that with the present device the drive conditions are better, enabling either the number of drive units to be reduced or the number of driven spindles to be increased for the same number of drive units, and in addition the slippage margins are greater so decreasing drive belt wear.
  • the drive members can consist of relative drive pulleys, each associated with its own motor or receiving motion from a transmission connected to a single motor.
  • a device does not require the provision of auxiliary belts for driving spindles excluded from the main drive, and in addition does not involve constructional complications in that the single belt arrangement requires only the provision of relative deviation members, which can be common for adjacent belts.
  • the individual drive units are associated with independent pairs of belts, any acceleration differences during the starting of one unit compared with another have no effect on the belts.
  • the figures show very schematically a ring spinning machine 1 provided with a plurality of spindles 2 arranged on two faces of the spinning machine (only some of the spindles are shown, for simplicity), each spindle being provided lowerly in known manner with a drive pulley 3 to be tangentially engaged by a drive belt.
  • the tailstock of the spinning machine 1 carrying the control members for the drafting units 4a is indicated by 4, whereas the spinning machine headstock, which mainly carries the suction members, is indicated by 5.
  • Tensioning rollers 6 are arranged between pairs of pulleys 3, all in known manner.
  • the invention For driving the spindles 2 the invention provides for sectional drive, the number of sections being two in this particular case.
  • the spindles 2 of the sections are driven by respective pairs of drive belts 7a, 7b such that the belts of each pair rotate the same number of spindles 2 on the two faces of the spinning machine 1. It is not necessary for each pair of belts 7a, 7b to drive the same total number of spindles 2. This can also be deduced from Figure 1, in which the belt pair 7a, 7b on the left drives a smaller number of spindles 2 than the pair on the right. For constructional economy reasons it may however be appropriate to divide the drives such that each belt pair 7a, 7b drives the same number of spindles 2.
  • Each belt pair 7a, 7b is driven by its own drive member 8 consisting of a main drive pulley positioned substantially symmetrical to the trajectory of the associated belt pair 7a, 7b.
  • the pulley 8 can be operated directly by its own electric motor 9.
  • Each belt pair 7a, 7b travels about deviation pulleys 10, 11 of vertical axis, these pulleys being common for adjacent belts 7a, 7b and operating the drafting units 4a by known means ( Figure 2).
  • Figures 2 and 4 this arrangement means that the adjacent belts 7a, 7b move in alternately different horizontal planes, but each belt remains entirely in its own plane, so that regular operation of the respective spindles 2 is ensured.
  • Within the drive units there are provided a further two deviation pulleys 12 in diametrically opposite positions about the relative drive pulley 8, and in different planes.
  • the pulleys 12 are positioned such as to cause the belts 7a, 7b to undergo substantially S-shaped paths by passing about opposite sides of the pulley 8 through relatively wide winding arcs which in total occupy the entire periphery of the pulley 8.
  • the arrangement as described and illustrated enables the entire periphery of the pulleys 8 to be used (although in different planes) as traction surfaces.
  • By thus splitting the belts and arranging them symmetrically about the drive members 8 it is therefore possible to obtain a total winding angle which is at least equal to 360°, which would not be possible if only one belt were present, passing about the pulley 8 in known manner.
  • the improved total winding angle obtainable by a device according to the invention provides a greater margin of protection against slippage, or alternatively allows the number of drive points along the spinning machine 1 to be reduced, and thus results in lesser drive synchronization problems.
  • each belt 7a, 7b exceeds 1800, so that the total winding angle of the two belts 7a, 7b exceeds 360 °.
  • the spindle drive can also be separated from the drafting unit drive, to the advantage of operational regularity of both drives, by adding to the mechanical part of the drafting units 4a a driver synchronized with the spindle 2, such as a motor 4b controlled by an inverter 4c in accordance with the frequency.
  • the number of separate spindle drive units can be different from that illustrated by way of example, and the path taken by the belts 7a, 7b at the drive members 8 could also be varied, possibly by providing further deviation pulleys to further improve the winding angle of the belts about the pulleys 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP91202353A 1990-09-19 1991-09-14 Dispositif d'entrainement de broches dans un métier à filer à anneaux ou similaire Expired - Lifetime EP0476770B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2151790 1990-09-19
IT02151790A IT1243016B (it) 1990-09-19 1990-09-19 Dispositivo di azionamento dei fusi in un filatoio ad anelli o simile

Publications (2)

Publication Number Publication Date
EP0476770A1 true EP0476770A1 (fr) 1992-03-25
EP0476770B1 EP0476770B1 (fr) 1996-05-22

Family

ID=11182985

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91202353A Expired - Lifetime EP0476770B1 (fr) 1990-09-19 1991-09-14 Dispositif d'entrainement de broches dans un métier à filer à anneaux ou similaire

Country Status (4)

Country Link
EP (1) EP0476770B1 (fr)
JP (1) JPH0749609B2 (fr)
DE (1) DE69119676T2 (fr)
IT (1) IT1243016B (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1442037A (en) * 1922-02-11 1923-01-16 John W Bamford & Son Inc Endless-belt drive
DE1141571B (de) * 1960-01-21 1962-12-20 Skf Kugellagerfabriken Gmbh Antrieb fuer Spindeln von Spinn- und Zwirnmaschinen
FR2249187A1 (fr) * 1973-10-24 1975-05-23 Evolution Sa
WO1986007101A1 (fr) * 1985-05-25 1986-12-04 Zinser Textilmaschinen Gmbh Transmission a courroie tangentielle
EP0326003A2 (fr) * 1988-01-26 1989-08-02 Maschinenfabrik Rieter Ag Machine pour la fabrication de fils tordus ou retordus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2610785A1 (de) * 1976-03-15 1977-09-29 Uniroyal Luxembourg Ringzwirnmaschine
JPS62502902A (ja) * 1985-05-25 1987-11-19 チンザ−・テクスティルマシイネン・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング 接線ベルト駆動機構
JPH0713329B2 (ja) * 1986-01-27 1995-02-15 株式会社豊田自動織機製作所 紡機のスピンドル駆動装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1442037A (en) * 1922-02-11 1923-01-16 John W Bamford & Son Inc Endless-belt drive
DE1141571B (de) * 1960-01-21 1962-12-20 Skf Kugellagerfabriken Gmbh Antrieb fuer Spindeln von Spinn- und Zwirnmaschinen
FR2249187A1 (fr) * 1973-10-24 1975-05-23 Evolution Sa
WO1986007101A1 (fr) * 1985-05-25 1986-12-04 Zinser Textilmaschinen Gmbh Transmission a courroie tangentielle
EP0326003A2 (fr) * 1988-01-26 1989-08-02 Maschinenfabrik Rieter Ag Machine pour la fabrication de fils tordus ou retordus

Also Published As

Publication number Publication date
IT9021517A0 (it) 1990-09-19
DE69119676D1 (de) 1996-06-27
JPH04263626A (ja) 1992-09-18
JPH0749609B2 (ja) 1995-05-31
IT1243016B (it) 1994-05-23
DE69119676T2 (de) 1996-11-28
IT9021517A1 (it) 1992-03-19
EP0476770B1 (fr) 1996-05-22

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