US3910023A - Apparatus for open-end spinning - Google Patents

Apparatus for open-end spinning Download PDF

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US3910023A
US3910023A US511306A US51130674A US3910023A US 3910023 A US3910023 A US 3910023A US 511306 A US511306 A US 511306A US 51130674 A US51130674 A US 51130674A US 3910023 A US3910023 A US 3910023A
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roller
parts
drive means
break
arrangement
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US511306A
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Peter Muller
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Fried Krupp AG
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Fried Krupp AG
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/04—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by contact of fibres with a running surface
    • D01H4/08—Rotor spinning, i.e. the running surface being provided by a rotor

Definitions

  • ABSTRACT [30] Foreign Application Priority Data In an open-end spinning apparatus including a rotat- Nov. 17, 1973 Germany 2357514 ably mounted -"P roller member and a rotatably mounted spinning rotor member, only one of the 52 US. Cl. 57/58.95; 57/58.89; 57/58.9l; members is directly driven while the other member is 57/92 not directly connected to any drive unit and is indi- [51] Int.
  • the present invention relates to an apparatus for open-end spinning of the type in which fibers are broken up by means of a break-up roller which is disposed at least approximately coaxially with the spinning rotor and are then supplied to the spinning rotor, where they are spun into a continuous length of thread or yarn.
  • the break-up roller as well as the spinning rotor are provided with their own individual drives; so that the break-up roller can be caused to rotate independently of the spinning rotor.
  • Such indirect drive for the break-up roller can be re alized by the generation of flow and force fields which become effective between the driving part, e.g. the spinning rotor, and the driven part, e.g. the break-up roller.
  • the rotational movement of air produced by the spinning rotor can be utilized to drive the break-up roller.
  • At least one of the two parts, which rotate in the same direction the spinning rotor or the break-up roller is provided with a device for producing alternating magnetic effects in the facing surface of the respective other part.
  • At least one of the surfaces of the break-up roller which faces the spinning rotor is provided with one or a plurality of permanent magnets and the spinning rotor is made of an electrically conductive material. It is particularly advantageous for the spinning rotor to be backed by a ferromagnetic material.
  • the relative move ment between the driving part and the driven part induces eddy currents in the electrically conductive spinning rotor material so as to effect a magnetic coupling between the spinning rotor and the break-up roller.
  • the break-up roller may be the driving part and the spinning rotor the driven part.
  • At least one of the parts is mounted so that the distance between the surface of the permanent magnet of the break-up roller facing the spinning rotor and the associated countersurface of the spinning rotor is adjustable.
  • the change in spacing between surfaces which are in mutual interaction can be made possible by arranging the break-up roller to be displaceable in the axial direction with respect to the spinning rotor.
  • FIG. 1 is a longitudinal cross-sectional view of an open-end spinning device constructed in accordance with a preferred embodiment of the invention.
  • FIG. 2 is a cross-sectional view along the line II-II of FIG. 1.
  • the open-end spinning device shown in FIGS. 1 and 2 essentially includes a spinning rotor 1 and a break-up roller 2 arranged coaxially with the spinning rotor.
  • the spinning rotor 1 is supported,'by means of its hollow rotor shaft 1, in a housing 4 on roller bearings 3.
  • Shaft 1' is connected, via bolt 5 disposed between the two roller bearings, with a suitable: drive unit, for example an electric motor (not shown).
  • the break-up roller 2 which in part extends into spinning rotor 1, is mounted on two roller bearings 6 to be freely rotatable about an axle 7.
  • the axle itself is supported in a housing 8 which is fixed to housing 4.
  • axle whose threaded section 7 engages in a threaded bore 8 of housing 8 can be moved in the axial direction by rotating it, for example with the aid of a slot at its exposed end.
  • Unintended displacement of axle 7 is prevented by a safety nut 10 which is screwed onto threaded portion 7' at the outside of housing 8 and which engages a spring ring or lock washer 9.
  • the fiber material 1 1 to be spun into a thread or yarn is furnished to the break-up roller through an entrance bore 12 in housing 8 and is broken up on the roller 2 into individual fibers. As a result of centrifugal forces and the flow of air, these fibers then reach a fiber collection trough 1" of the spinning rotor l.
  • the fibers collected in the fiber collection trough are removed in a known manner as yarn 14 through a stationary guide tube 13 disposed in the bore of rotor shaft 1' and fastened to housing 4, this being effected with the aid of two conveying rollers 17 driven in respectively opposite directions.
  • a multiple pole permanent magnet 15 is disposed in breakup roller 2 at a definedaxial spacing 16 from frontal face 1" of spinning rotor 1 and at least the part of rotor 1 which defines face 1"" is made of electrically conductive, and possibly ferromagnetic, material.
  • electrically conductive, and possibly ferromagnetic, material are for example aluminum, copper, copper alloys and mild steel.
  • the rate of rotation of the break-up roller is determined, on the one hand, by the combing, or break-up, moment to be produced and the friction in bearings 6 and, on the other hand, by the magnetic follow-up moment of the spinning rotor l which can be set by adjusting spacing 16.
  • North and south poles N and S. are formed by suitable polarized regions of the disc-shaped permanent magnet 15. Seen in the peripheral direction, a north pole N is always followed by a south pole S, and vice versa, as shown in FIG. 2. There are no discernible separating lines between the individual poles.
  • the alternating magnetic effect between the spinning rotor 1 and the break-up roller 2 can also be produced by permanent magnets provided in the cylindrical surface of part 2, these permanent magnets being used in addition to permanent magnet 15.
  • axle 7 If a continuous variability in the axial position of axle 7 is required, it can be connected to the pistion of a hydraulic cylinder assembly via a suitable connection, for example a cardan joint or universal joint. In this case, the pairs of threads 7', 8' are replaced by a suitable movable fitting between axle 7 and housing 8.
  • ln apparatus for open-end spinning and including two parts mounted for coaxial rotation in the same direction and constituting, respectively, a break-up roller for breaking up a stream of fibers and a spinning rotor arranged to receive fibers which have been broken up by the break-up roller and to spin them into a length of yarn, the improvement comprising: direct drive means connected for directly rotating only one of said parts; and indirect drive means connected to at least one of said parts for causing the part not directly rotated by said drive means to be rotated exclusively by the rotation of said part which is directly driven by said drive means, while preventing physical driving contact between said parts.
  • said magnetic force effect means comprise at least one permanent magnet carried by said roller and said rotor is made of electrically conductive material at least in the region of its said surface.

Abstract

In an open-end spinning apparatus including a rotatably mounted break-up roller member and a rotatably mounted spinning rotor member, only one of the members is directly driven while the other member is not directly connected to any drive unit and is indirectly driven by forces produced by the directly driven member while the two members are prevented from physically contacting one another. Preferably, one member carries a multiple-pole magnet and the other member is made of electrically conductive material.

Description

United States Patent 1191 1111 3,910,023 Miiller Oct. 7, 1975 [54] APPARATUS FOR OPEN-END SPINNING 3,732,681 5/1973 Kutscher et al 57/58.95 3,757,506 9/1973 Kutscher et a1 57/58.95 [75] Inventor Muller Bremen-Sum, 3,774,386 11/1973 Kutscher et al 57/58.95 Germany 3,793,820 2/1974 Rajnoha et a] 57/58,89 pxssigneeZ Fried. pp Gesellschaft 3,891,075 10/1974 KUtSChCl' et al 57/58.9l
beschrankter Haftung, Essen, Germany Primary ExaminerJohn Petrakes [22] Filed, Sept 30 1974 Attorney, Agent, or FirmSpencer & Kaye [21] Appl. No.: 511,306
[57] ABSTRACT [30] Foreign Application Priority Data In an open-end spinning apparatus including a rotat- Nov. 17, 1973 Germany 2357514 ably mounted -"P roller member and a rotatably mounted spinning rotor member, only one of the 52 US. Cl. 57/58.95; 57/58.89; 57/58.9l; members is directly driven while the other member is 57/92 not directly connected to any drive unit and is indi- [51] Int. z D01" 1/12; DOIH H2O; DOIH 1/22 rectly driven by forces produced by the directly driven [58] Field of Search 57/58.89-58.95, member While the two members are Prevented from 57 92 00 0 0 0 physically contacting one another. Preferably, one member carries a multiple-pole magnet and the other [5 References Cited member is made of electrically conductive material.
UNITED STATES PATENTS 6 Claims, 2 Drawing Figures 2,932,152 4/1960 Jackson 57/101 X Sheet 1 of 2 U8. Patent Oct. 7,1975
US. Patent 00. 7,1975 Sheet 2 of 2 3,910,023
APPARATUS FOR OPEN-END SPINNING BACKGROUND OF THE INVENTION The present invention relates to an apparatus for open-end spinning of the type in which fibers are broken up by means of a break-up roller which is disposed at least approximately coaxially with the spinning rotor and are then supplied to the spinning rotor, where they are spun into a continuous length of thread or yarn.
In known open end spinning devices, the break-up roller as well as the spinning rotor are provided with their own individual drives; so that the break-up roller can be caused to rotate independently of the spinning rotor.
The use of two independent drives is expensive, however. Furthermore, the drive for the break-up roller requires a number of special structural features which, inter alia, interfere with operability of the spinning device.
SUMMARY OF THE INVENTION It is an object of the present invention to provide an apparatus for open-end spinning which does not have the above-described drawbacks.
This is accomplished, according to the invention, by mounting the break-up roller so that it does not have a separate drive and by providing elements for causing the breakup roller to be driven by the spinning rotor without physically contacting it.
Such indirect drive for the break-up roller can be re alized by the generation of flow and force fields which become effective between the driving part, e.g. the spinning rotor, and the driven part, e.g. the break-up roller. Thus, for example, the rotational movement of air produced by the spinning rotor can be utilized to drive the break-up roller.
In a preferred embodiment of the present invention at least one of the two parts, which rotate in the same direction the spinning rotor or the break-up roller is provided with a device for producing alternating magnetic effects in the facing surface of the respective other part.
Advantageously, at least one of the surfaces of the break-up roller which faces the spinning rotor is provided with one or a plurality of permanent magnets and the spinning rotor is made of an electrically conductive material. It is particularly advantageous for the spinning rotor to be backed by a ferromagnetic material.
When, for example, a multiple pole permanent magnet is disposed in the break-up roller the relative move ment between the driving part and the driven part induces eddy currents in the electrically conductive spinning rotor material so as to effect a magnetic coupling between the spinning rotor and the break-up roller.
According to other embodiments of the invention, the break-up roller may be the driving part and the spinning rotor the driven part.
According to a further embodiment of the present invention, at least one of the parts is mounted so that the distance between the surface of the permanent magnet of the break-up roller facing the spinning rotor and the associated countersurface of the spinning rotor is adjustable. By varying the distance of the surfaces of the spinning rotor and the break-up roller, which are in interaction with one another, it is possible, in a simple manner, to change the degree of coupling between the two rotating parts and to regulate it, for example, in dependence on the rate of rotation of the break-up roller.
The change in spacing between surfaces which are in mutual interaction can be made possible by arranging the break-up roller to be displaceable in the axial direction with respect to the spinning rotor.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal cross-sectional view of an open-end spinning device constructed in accordance with a preferred embodiment of the invention.
FIG. 2 is a cross-sectional view along the line II-II of FIG. 1.
DESCRIPTION OF THE PREFERRED EMBODINIENTS The open-end spinning device shown in FIGS. 1 and 2 essentially includes a spinning rotor 1 and a break-up roller 2 arranged coaxially with the spinning rotor. The spinning rotor 1 is supported,'by means of its hollow rotor shaft 1, in a housing 4 on roller bearings 3. Shaft 1' is connected, via bolt 5 disposed between the two roller bearings, with a suitable: drive unit, for example an electric motor (not shown).
The break-up roller 2, which in part extends into spinning rotor 1, is mounted on two roller bearings 6 to be freely rotatable about an axle 7. The axle itself is supported in a housing 8 which is fixed to housing 4.
The axle whose threaded section 7 engages in a threaded bore 8 of housing 8 can be moved in the axial direction by rotating it, for example with the aid of a slot at its exposed end. Unintended displacement of axle 7 is prevented by a safety nut 10 which is screwed onto threaded portion 7' at the outside of housing 8 and which engages a spring ring or lock washer 9.
The fiber material 1 1 to be spun into a thread or yarn is furnished to the break-up roller through an entrance bore 12 in housing 8 and is broken up on the roller 2 into individual fibers. As a result of centrifugal forces and the flow of air, these fibers then reach a fiber collection trough 1" of the spinning rotor l.
The fibers collected in the fiber collection trough are removed in a known manner as yarn 14 through a stationary guide tube 13 disposed in the bore of rotor shaft 1' and fastened to housing 4, this being effected with the aid of two conveying rollers 17 driven in respectively opposite directions.
A multiple pole permanent magnet 15 is disposed in breakup roller 2 at a definedaxial spacing 16 from frontal face 1" of spinning rotor 1 and at least the part of rotor 1 which defines face 1"" is made of electrically conductive, and possibly ferromagnetic, material. Such materials are for example aluminum, copper, copper alloys and mild steel.
Once the spinning rotor 1 is caused to rotate by driving force applied via belt 5, a relative movement is produced between the rotor wall 1" and the permanent magnet 15 and this movement induces eddy currents in the electrically conductive rotor material and, if the rotor material is ferromagnetic, additionally produces magnetic fields. The eddy currents and/or magnetic fields generate a magnetic force effect between the spinning rotor 1 and the break-up roller 2 which causes the break-up roller to rotate.
The rate of rotation of the break-up roller is determined, on the one hand, by the combing, or break-up, moment to be produced and the friction in bearings 6 and, on the other hand, by the magnetic follow-up moment of the spinning rotor l which can be set by adjusting spacing 16.
North and south poles N and S. are formed by suitable polarized regions of the disc-shaped permanent magnet 15. Seen in the peripheral direction, a north pole N is always followed by a south pole S, and vice versa, as shown in FIG. 2. There are no discernible separating lines between the individual poles.
In a modification of the illustrated embodiment, the alternating magnetic effect between the spinning rotor 1 and the break-up roller 2 can also be produced by permanent magnets provided in the cylindrical surface of part 2, these permanent magnets being used in addition to permanent magnet 15.
If a continuous variability in the axial position of axle 7 is required, it can be connected to the pistion of a hydraulic cylinder assembly via a suitable connection, for example a cardan joint or universal joint. In this case, the pairs of threads 7', 8' are replaced by a suitable movable fitting between axle 7 and housing 8.
It will be understood that the above description of the present invention is susceptible to various modifications, changes and adaptations, and the same are intended to be comprehended within the meaning and range of equivalents of the appended claims.
I claim:
1. ln apparatus for open-end spinning and including two parts mounted for coaxial rotation in the same direction and constituting, respectively, a break-up roller for breaking up a stream of fibers and a spinning rotor arranged to receive fibers which have been broken up by the break-up roller and to spin them into a length of yarn, the improvement comprising: direct drive means connected for directly rotating only one of said parts; and indirect drive means connected to at least one of said parts for causing the part not directly rotated by said drive means to be rotated exclusively by the rotation of said part which is directly driven by said drive means, while preventing physical driving contact between said parts.
2. An arrangement as defined in claim 1 wherein said drive means are connected for directly rotating said spinning rotor.
3. .An arrangement as defined in claim 2 wherein said rotor presents a surface which faces a surface of said roller, and said indirect drive means comprise means carried by one of said parts, at its said surface, for inducing cyclically alternating magnetic force effects in said surface of said other part, when relative rotation occurs between said parts.
4. An arrangement as defined in claim 3 wherein said magnetic force effect means comprise at least one permanent magnet carried by said roller and said rotor is made of electrically conductive material at least in the region of its said surface.
5. An arrangement as defined in claim 4 wherein said surfaces lie transversely to the axis of rotation of said parts and further comprising mounting means supporting one of said parts for movement in a direction to adjust the'distance between said surfaces.
6. An arrangement as defined in claim 5 wherein said mounting means support said roller for movement along its axis of rotation.

Claims (6)

1. In apparatus for open-end spinning and including two parts mounted for coaxial rotation in the same direction and constituting, respectively, a break-up roller for breaking up a stream of fibers and a spinning rotor arranged to receive fibers which have been broken up by the break-up roller and to spin them into a length of yarn, the improvement comprising: direct drive means connected for directly rotating only one of said parts; and indirect drive means connected to at least one of said parts for causing the part not directly rotated by said drive means to be rotated exclusively by the rotation of said part which is directly driven by said drive means, while preventing physical driving contact between said parts.
2. An arrangement as defined in claim 1 wherein said drive means are connected for directly rotating said spinning rotor.
3. An arrangement as defined in claim 2 wherein said rotor presents a surface which faces a surface of said roller, and said indirect drive means comprise means carried by one of said parts, at its said surface, for inducing cyclically alternating magnetic force effects in said surface of said other part, when relative rotation occurs between said parts.
4. An arrangement as defined in claim 3 wherein said magnetic force effect means comprise at least one permanent magnet carried by said roller and said rotor is made of electrically conductive material at least in the region of its said surface.
5. An arrangement as defined in claim 4 wherein said surfaces lie transversely to the axis of rotation of said parts and further comprising mounting means supporting one of said parts for movement in a direction to adjust the distance between said surfaces.
6. An arrangement as defined in claim 5 wherein said mounting means support said roller for movement along its axis of rotation.
US511306A 1973-11-17 1974-09-30 Apparatus for open-end spinning Expired - Lifetime US3910023A (en)

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JP (1) JPS5083538A (en)
BE (1) BE822056A (en)
BR (1) BR7409594A (en)
CH (1) CH581712A5 (en)
CS (1) CS178833B2 (en)
DE (1) DE2357514C2 (en)
FR (1) FR2251642B1 (en)
GB (1) GB1452848A (en)
IT (1) IT1025575B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4144707A (en) * 1976-09-07 1979-03-20 Fritz Stahlecker Open end spinning assembly with an opener roll
US5603210A (en) * 1992-06-11 1997-02-18 Rieter Ingolstadt Spinnereimaschinenbau Ag Device to convey fibers to the fiber collection groove of an open-end spinning rotor
US6412266B2 (en) * 1999-12-29 2002-07-02 Rieter Ingolstadt Spinnereimaschinenbau Ag Spin machine with several single drives

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2658824C3 (en) * 1976-12-24 1981-07-09 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Friction aggreat
BE1009183A3 (en) * 1995-03-08 1996-12-03 Houget Duesberg Bosson Device for opening fiber flakes.
DE102013108199A1 (en) * 2013-07-31 2015-02-05 Maschinenfabrik Rieter Ag Open-end spinning rotor with a rotor cup, a rotor shaft and a coupling device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2932152A (en) * 1958-05-28 1960-04-12 Chemstrand Corp Textile twisting apparatus
US3732681A (en) * 1971-02-23 1973-05-15 Krupp Gmbh Open-end spinning device with an opening-up roller
US3757506A (en) * 1971-03-10 1973-09-11 Krupp Gmbh Apparatus for the spinning of staple fibers in a ringless manner
US3774386A (en) * 1971-03-10 1973-11-27 Krupp Gmbh Device for avoiding the accumulation of lint with ringless spinning
US3793820A (en) * 1969-03-20 1974-02-26 Elitex Z Textilnilio Shojuenst Device for ringless spinning of fibers
US3891075A (en) * 1973-11-12 1975-06-24 Amp Inc Solid state control circuit for vending devices

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2932152A (en) * 1958-05-28 1960-04-12 Chemstrand Corp Textile twisting apparatus
US3793820A (en) * 1969-03-20 1974-02-26 Elitex Z Textilnilio Shojuenst Device for ringless spinning of fibers
US3732681A (en) * 1971-02-23 1973-05-15 Krupp Gmbh Open-end spinning device with an opening-up roller
US3757506A (en) * 1971-03-10 1973-09-11 Krupp Gmbh Apparatus for the spinning of staple fibers in a ringless manner
US3774386A (en) * 1971-03-10 1973-11-27 Krupp Gmbh Device for avoiding the accumulation of lint with ringless spinning
US3891075A (en) * 1973-11-12 1975-06-24 Amp Inc Solid state control circuit for vending devices

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4144707A (en) * 1976-09-07 1979-03-20 Fritz Stahlecker Open end spinning assembly with an opener roll
US5603210A (en) * 1992-06-11 1997-02-18 Rieter Ingolstadt Spinnereimaschinenbau Ag Device to convey fibers to the fiber collection groove of an open-end spinning rotor
US6412266B2 (en) * 1999-12-29 2002-07-02 Rieter Ingolstadt Spinnereimaschinenbau Ag Spin machine with several single drives

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IT1025575B (en) 1978-08-30
CS178833B2 (en) 1977-10-31
BE822056A (en) 1975-03-03
DE2357514C2 (en) 1975-11-20
JPS5083538A (en) 1975-07-05
CH581712A5 (en) 1976-11-15
DE2357514B1 (en) 1975-04-10
FR2251642B1 (en) 1978-06-16
GB1452848A (en) 1976-10-20
BR7409594A (en) 1976-05-25
FR2251642A1 (en) 1975-06-13

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