US3611697A - Air bearing brake for rotating spinning ring - Google Patents

Air bearing brake for rotating spinning ring Download PDF

Info

Publication number
US3611697A
US3611697A US869233A US3611697DA US3611697A US 3611697 A US3611697 A US 3611697A US 869233 A US869233 A US 869233A US 3611697D A US3611697D A US 3611697DA US 3611697 A US3611697 A US 3611697A
Authority
US
United States
Prior art keywords
ring
gas
brake
traveller
piston
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
US869233A
Other languages
English (en)
Inventor
William H Greb
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.)
Motors Liquidation Co
Original Assignee
General Motors Corp
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 General Motors Corp filed Critical General Motors Corp
Application granted granted Critical
Publication of US3611697A publication Critical patent/US3611697A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D63/00—Brakes not otherwise provided for; Brakes combining more than one of the types of groups F16D49/00 - F16D61/00
    • 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
    • D01H7/52—Ring-and-traveller arrangements
    • D01H7/56—Ring-and-traveller arrangements with freely-rotatable rings; with braked or dragged rings ; Lubricating arrangements therefor
    • D01H7/565—Ring-and-traveller arrangements with freely-rotatable rings; with braked or dragged rings ; Lubricating arrangements therefor with fluid bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
    • F16C32/0603—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D49/00—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2340/00—Apparatus for treating textiles
    • F16C2340/18—Apparatus for spinning or twisting

Definitions

  • a textile spinning ring having a gas bearing supported traveller ring is provided with a gas-operated brake. The brake is powered from the gas bearing supply plenum and is maintained in the disengaged position through a venturi effect.
  • My invention relates generally to braking and more specifically to the braking of apparatus in which the member to be braked is supported on a gas bearing popularly referred to as an air bearing.
  • Spinning rings are devices well-known in the textile arts and are used in a winding environment.
  • the spinning ring comprises a follower translatable on a follower ring which itself is rotatable and is used to guide a strand of yarn onto a rotating spool to form a wound package.
  • the follower ring is rotatably supported by an air bearing, the high inertia of the rotating ring and low torque of the air bearing combine for a long coast-down of the spinning ring after its motive power (the strand being wound on the package) has been removed.
  • the object of my invention was broadly to eliminate the long coast-down associated with a textile spinning ring having an air bearing supported traveller ring and thereby minimize the terminal windage waste. More specifically, the object of my invention was to provide a brake for the traveller ring to stop the spinning ring shortly after the package being wound was stopped. It was an object of my invention to make the brakes simple both from the structural standpoint and the operational standpoint.
  • FIG. 1 is an elevation partially in cross section of an apparatus in accordance with my invention set in a textile winding environment.
  • FIG. 2 is a section taken along the line 2-2 of FIG. 1 and looking in the direction of the arrows.
  • FIG. 3 is a section taken along the line 3-3 of FIG. 1 and looking in the direction of the arrows.
  • the spinning ring 10 includes a stationary support member 16 which encircles the spool M and is concentric with it.
  • Member 16 comprises a housing 18, the inner circumferential wall 20 of which has a circumferential groove 22 which is closed by a permeable sleeve 24 Examples of suitable material for the sleeve 24 are porous bronze and porous ceramic.
  • the groove 22 thus closed forms a plenum 26 which is fed pressurized gas from a pump (not shown) through conduit 28 and fitting 3t).
  • a traveller ring 32 Disposed concentrically within the permeable sleeve 24 is a traveller ring 32.
  • the outer circumferential wall 34' on the traveller ring 32 lies closely adjacent the inner circumferential surface of the permeable sleeve 24 with a closely controlled small amount of space 36 therebetween, generally on the order of 0.001 inch per inch of ring diameter.
  • a radial flange 38 on the upper part of the ring 32 provides a radial wall 40 which lies adjacent the upper radial surface 42 of the porous sleeve 24 and forms a space 44 which is ultimately determined by the weight of the ring 32 and the gas fiow into it.
  • a thrust washer 46 of nylon or other suitable material is provided on the lower end of the ring 32 adjacent the lower radial surface 48 on the porous sleeve 24-.
  • a C-shaped traveller 50 is loosely mounted on the cylindrical portion 52 of the traveller ring 32 for translation on it. The strand 12 after being threaded through an upper guide, not shown, passes between the traveller 50 and the ring 32 and onto the spool 14.
  • the pressurized gas preferably air
  • the gas flows radially and circumferentially through the permeable sleeve 24 into the spaces 36 and 42 exhausting out the open end of these spaces.
  • the gas flowing through the spaces 36 and 42 provides a pressure acting on the walls 34 and 40 and supports the ring 32 out of frictional engagement with the permeable sleeve 24.
  • the ring 32 thus supported can in the wellknown manner of an air hearing be rotated at very high speeds with comparatively little torque which is substantially constant and independent of load changes.
  • the spool 14 is rotated at high speed to wind the strand 12 on it.
  • the strand 12 causes the traveller 50 to translate around the traveller ring 32.
  • the traveller 50 translates, its frictional engagement with the ring 32 causes it to follow the traveller 50 and soon these components are rotating at the same speed.
  • the washer 44- of nylon or similar antifriction material is mounted on the ring 32 limiting its lift until it settles to an equilibrium position. After the ring 32 is brought up to speed, it and the traveller 50 effectively are a single rotating part with static friction between the traveller 50 and the ring 32 fixing the traveller 50 with respect to the ring 32.
  • the brake 60 comprises a housing 62 secured to the stationary support member T6 of the spinning ring 10.
  • the housing 62 includes a cylinder 64- in which is reciprocably mounted a piston 66.
  • the forward portion of the piston 66 is enlarged so that the piston is guided by the surface 42 of the permeable sleeve 24.
  • the piston face 68 is engageable with the face of the radial flange 38 on the ring 32 when extended. It is moved to its extended position in response to positive pressure in the cylinder chamber 70 behind the piston 66.
  • the piston 66 is maintained in its retracted position shown in FIG. 1 in response to negative pressure in cylinder chamber 70.
  • the brake housing 62 includes an inlet 72 and an outlet or exhaust port 74 interfluidly connected by a vertical conduit 76, a horizontal conduit 78, and an intermediate horizontal conduit 80 of reduced cross section. Because of its reduced size, passage 80 acts as a nozzle or venturi increasing flow velocity and reducing pressure relative to the velocity and flow of fluid through the conduits 76 and 78.
  • the inlet 72 overlies the counterbored outlet 82 of passage *84 in the stationary support 16 leading from the plenum 26.
  • a restrictor 86 is disposed in the counterbore and may be necessary to control the flow from plenum 26 into the inlet 72.
  • the restrictor may be a permeable member of material similar to that used for the permeable sleeve 24.
  • a short conduit 88 leads from the cylinder chamber 70 and opens into the nozzle 80.
  • the pressurized gas in chamber 26 not only permeates the sleeve 24 to provide air bearing support for the rotating traveller ring 32 but also flows through the conduits 76 and 78 and interposed nozzle 80 in the housing 62.
  • the gas flow through nozzle or venturi 80 behaves in a well-known manner, namely, flow velocity is increased and pressure is decreased.
  • the decrease in pressure evacuates the cylinder chamber 70 until the pressure of the gas in the chamber 70 is substantially equal to that of the static pressure in the venturi throat.
  • the spinning ring is easily stopped simply by blocking the outlet 74.
  • the shutting off of the outlet 74 stops the flow through the venturi 80 and ceases its aspirator elfect on the cylinder chamber 70.
  • the flow stoppage creates a back pressure in the brake housing conduits. This back pressure which is substantially equal to the pressure in the plenum 26 or to the pressure downstream of the restrictor '86 when one is used is transmitted to the cylinder chamber 70.
  • the pressure is sufiicient to extend the piston 66 into engagement with the face of the flange 38 on the ring 32 and apply the braking force thereto necessary for braking the ring within a very short duration to minimize terminal windage loss.
  • the traveller 50 In braking the ring 32 to absorb the inertia of the ring 32, the traveller 50 is of such light weight relative to the ring 32 that it does not translate on the ring to any appreciable amount and is, therefore, stopped with it thus limiting the unraveling of yarn to the very short duration necessary for braking of the traveller ring 32.
  • exit 74 being blocked to operate the brake
  • this reference includes the concept of a valve located at the exit 74.
  • This operation of this valve or its equivalent can be automated and controlled from the spinning machine as desired.
  • an electromagnetic valve could be deenergized concurrently With an electric motor driving the spool 14 thereby blocking the exit 74 and braking the spinning ring concurrently with the removal of power from the spool 14.
  • the valve alternatively might be responsive to strand breakage or plenum pressure.
  • the brakes are preferably located for a balanced application, for instance, two brakes at diametrically opposed locations, three brakes at intervals, etc.
  • a gas operated brake for stopping said rotatable ring, said brake comprising a housing on said stationary member, a cylinder in said housing, a piston reciprocably mounted in said cylinder and frictionally engageable with said rotatable ring in its extended position, a fluid conduit in said housing, said fluid conduit having an inlet, an outlet, and a nozzle therebetween, passage means in said stationary member connecting said supply plenum to said conduit inlet, restrictor means in said fluid conduit means or in said passage means, and a second fluid conduit in said housing connected to said cylinder and opening into said nozzle whereby said piston is held in a retracted position out of engagement with said rotatable ring in response to a negative pressure
  • a gas bearing apparatus having a stationary member with a first bearing surface, a rotatable member with a second bearing surface spaced sufiiciently closely adjacent to said first bearing surface so that said rotatable member is supported by a gas film interposed between said bearing surfaces, and means including a supply plenum to provide a fluid passage from a source of pressurized gas to the gas film through said first bearing surface, the improvement comprising a brake for stopping said rotatable member, said brake comprising a cylinder, a piston reciprocably mounted in said cylinder, said piston frictionally engaging said rotatable member in an extended position and being spaced from said rotatable member in a retracted position, fluid motor means including said cylinder, said fluid motor means moving said piston to said extended position in response to a positive gas pressure in said cylinder and to said retracted position in response to a negative gas pressure in said cylinder, conduit means fluidly to connect said cylinder to said supply plenum whereby said cylinder is adapted to be supplied gas at a positive
  • a gas bearing apparatus having a stationary mem ber with a first bearing surface, a rotatable member with a second bearing surface spaced sufficiently closely adjacent to said first bearing surface so that said rotatable member is supported by a gas film interposed between said bearing surfaces, and means including a supply plenum to provide a fluid passage from a source of pressurized gas to the gas film through said first bearing surface
  • the improvement comprising, a gas operated brake for stopping said rotatable member, said brake comprising, a cylinder in said stationary member, a piston reciprocably mounted in said cylinder and frictionally engageable with said rotatable member in its extended position, a fluid conduit in said stationary member, said fluid conduit having a nozzle and an outlet connected in a series flow relationship with said supply plenum, a second fluid conduit fluidly connected to said cylinder and opening into said nozzle, said piston being held in a retracted position by vacuum pressure in said cylinder produced by the high velocity flow of gases through said nozzle exhausting through said outlet When said plenum is
  • a spinning ring for guiding a filament onto a u rotating spool having a traveller carried by a rotatable ring supported by a cushion of gas flowing from a pressurized gas supply plenum in a stationary member
  • said brake comprising a cylinder, a piston reciprocably mounted in said cylinder, said piston frictionally engaging said rotatable ring in an extended position and being spaced from said rotatable ring in a retracted position, fluid motor means which moves said piston to said extended position in response to a positive gas pressure and to said retracted position in response to a negative gas pressure, conduit means fluidly connecting said fluid motor means to said pressurized gas supply plenum and, aspirator means fluidly connected to said fluid motor means and said pressurized gas supply plenum.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Invalid Beds And Related Equipment (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)
US869233A 1969-10-24 1969-10-24 Air bearing brake for rotating spinning ring Expired - Lifetime US3611697A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US86923369A 1969-10-24 1969-10-24

Publications (1)

Publication Number Publication Date
US3611697A true US3611697A (en) 1971-10-12

Family

ID=25353160

Family Applications (1)

Application Number Title Priority Date Filing Date
US869233A Expired - Lifetime US3611697A (en) 1969-10-24 1969-10-24 Air bearing brake for rotating spinning ring

Country Status (2)

Country Link
US (1) US3611697A (enrdf_load_stackoverflow)
GB (1) GB1265620A (enrdf_load_stackoverflow)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3738094A (en) * 1971-09-23 1973-06-12 M Costales Rotating ring drive for spinning machine
DE2450762A1 (de) * 1974-10-25 1976-05-06 Zinser Textilmaschinen Gmbh Ringspinnmaschine mit luftgelagerten spinnringen
US3969004A (en) * 1974-08-02 1976-07-13 The Computervision Corporation Air bearing piston assembly for semiconductor mask-to-wafer aligner
US4030282A (en) * 1974-07-25 1977-06-21 Dr. Johannes Heidenhain Gmbh Resilient support for spinning-ring or twisting-ring bearing
US4051657A (en) * 1974-07-25 1977-10-04 Dr. Johannes Heidenhain, Gmbh Spinning-ring bearing and support
US4139243A (en) * 1975-12-31 1979-02-13 Logetronics, Inc. Protective system for a pneumatically actuated rotating body
US4244170A (en) * 1978-03-24 1981-01-13 Societe Alsacienne De Constructions Mecaniques De Mulhouse Spinning device comprising a ring rotatably supported on a fluid bearing
US4319450A (en) * 1977-05-12 1982-03-16 Zinser Textilmaschinen Gmbh Pneumatically cushioned spinning ring system
US4364612A (en) * 1980-08-05 1982-12-21 Casper S.P.A. Lower pair kinematic assembly with hydrostatic bearing
US4932200A (en) * 1988-07-12 1990-06-12 Kanai Juyo Kogyo Company Limited Rotary ring for spinning machinery
DE102007029505A1 (de) * 2007-06-25 2009-01-08 Deutsche Institute für Textil- und Faserforschung Stuttgart Vorrichtung und Fadenführungsring für eine Ringspinn- oder Zwirnmaschine sowie Ringspinn- oder Zwirnmaschine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2470172A2 (fr) * 1979-08-03 1981-05-29 Alsacienne Constr Meca Perfectionnement au freinage des anneaux rotatifs de continus a filer
FR2462495A1 (fr) * 1979-08-03 1981-02-13 Alsacienne Constr Meca Anneau tournant pour continu a filer, monte sur palier butee pneumatique a alimentation en air comprime

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3738094A (en) * 1971-09-23 1973-06-12 M Costales Rotating ring drive for spinning machine
US4030282A (en) * 1974-07-25 1977-06-21 Dr. Johannes Heidenhain Gmbh Resilient support for spinning-ring or twisting-ring bearing
US4051657A (en) * 1974-07-25 1977-10-04 Dr. Johannes Heidenhain, Gmbh Spinning-ring bearing and support
US3969004A (en) * 1974-08-02 1976-07-13 The Computervision Corporation Air bearing piston assembly for semiconductor mask-to-wafer aligner
DE2450762A1 (de) * 1974-10-25 1976-05-06 Zinser Textilmaschinen Gmbh Ringspinnmaschine mit luftgelagerten spinnringen
US4139243A (en) * 1975-12-31 1979-02-13 Logetronics, Inc. Protective system for a pneumatically actuated rotating body
US4319450A (en) * 1977-05-12 1982-03-16 Zinser Textilmaschinen Gmbh Pneumatically cushioned spinning ring system
US4244170A (en) * 1978-03-24 1981-01-13 Societe Alsacienne De Constructions Mecaniques De Mulhouse Spinning device comprising a ring rotatably supported on a fluid bearing
US4364612A (en) * 1980-08-05 1982-12-21 Casper S.P.A. Lower pair kinematic assembly with hydrostatic bearing
US4932200A (en) * 1988-07-12 1990-06-12 Kanai Juyo Kogyo Company Limited Rotary ring for spinning machinery
DE102007029505A1 (de) * 2007-06-25 2009-01-08 Deutsche Institute für Textil- und Faserforschung Stuttgart Vorrichtung und Fadenführungsring für eine Ringspinn- oder Zwirnmaschine sowie Ringspinn- oder Zwirnmaschine

Also Published As

Publication number Publication date
GB1265620A (enrdf_load_stackoverflow) 1972-03-01

Similar Documents

Publication Publication Date Title
US3611697A (en) Air bearing brake for rotating spinning ring
US5720160A (en) Vaccum centrifuge with magnetic bearings and sealing method
US3495781A (en) Expansible bobbin mandrel
US3324643A (en) Airborne spinning or twisting ring and traveler
ITTO940752A1 (it) Ugello rotante, in particolare per un apparecchio di lavaggio ad alta pressione.
GB1209625A (en) An improved open-end spinning method and apparatus
US3746233A (en) Air-supported thread overrun roller
ES440037A1 (es) Perfeccionamientos relativos a husos de doble torsion con undispositivo de enhebrado accionado por aire a presion.
US3918248A (en) Mechanism for driving a spinning rotor of the open-end spinning apparatus
US3769785A (en) Rotor of an open end spinning device
US3826073A (en) Rotatable sliding-thread clamp for textile machines
US4266397A (en) Method and apparatus for restarting individual winding units of a ring spinning or twisting frame
US3746226A (en) Yarn feed mechanism with constant throughput and pneumatic tension regulation
ES486363A1 (es) Perfeccionamientos en dispositivos de control de la veloci- dad de solicitacion de al menos una devanadera de hilos tex-tiles
US4270340A (en) Rotating ring yarn spinning or twisting apparatus and method
JP3108175B2 (ja) 二重撚糸スピンドル
US4244170A (en) Spinning device comprising a ring rotatably supported on a fluid bearing
GB1111501A (en) A method of and apparatus for winding yarn onto the spindles of spinning and twisting machines
US3456760A (en) Lubricating device for rolling mills
US3310934A (en) Double twist spindle
US4627230A (en) Open-end friction spinning machine
US3345814A (en) Device for winding yarn onto a spool by means of a ring
US4574575A (en) Two-for-one twisting spindle
JPH04296217A (ja) 回転装置
US4036446A (en) Method and apparatus for braking a bobbin chuck and for releasing a bobbin tube thereon