US3895483A - Apparatus for cleaning spinning rotors - Google Patents

Apparatus for cleaning spinning rotors Download PDF

Info

Publication number
US3895483A
US3895483A US474050A US47405074A US3895483A US 3895483 A US3895483 A US 3895483A US 474050 A US474050 A US 474050A US 47405074 A US47405074 A US 47405074A US 3895483 A US3895483 A US 3895483A
Authority
US
United States
Prior art keywords
thread
spinning
rotor
cleaning
spinning rotor
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
US474050A
Other languages
English (en)
Inventor
Gerhard Grau
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.)
Oerlikon Textile GmbH and Co KG
Original Assignee
Zinser Textilmaschinen GmbH
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 Zinser Textilmaschinen GmbH filed Critical Zinser Textilmaschinen GmbH
Application granted granted Critical
Publication of US3895483A publication Critical patent/US3895483A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • D01H4/22—Cleaning of running surfaces
    • D01H4/24—Cleaning of running surfaces in rotor spinning

Definitions

  • ABSTRACT An apparatus for the removing of deposits of fibers and/or foreign bodies in spinning rotors is described, the apparatus being particularly useful in conjunction with spinning rotors on open end spinning frames.
  • the frame has at least one spinning rotor, a pneumatic cleaning instrumentality being associated with each rotor.
  • a thread monitor is provided which senses the presence or tension in the thread and initiates a reduction in the rpm of the spinning rotor in the case of thread breakage.
  • a timing device responsive to the output from the thread monitor indicative of thread breakage, controls the cleaning instrumentality to effect the start of cleaning after a predetermined lapse of time from the instant the monitor signals that the yarn has broken and to effect the end of the cleaning operation upon the lapse of an additional period of time.
  • the invention relates, more particularly, to an apparatus for the removal of deposits in spinning rotors on open end spinning frames, wherein the open end spinning frame has at least one spinning rotor.
  • a respective pneumatic cleaning instrumentality is operatively associated with each spinning rotor. The fibers and/or other foreign bodies not spun into the thread are freed from the rotor by the pneumatic cleaning instrumentality.
  • a thread monitor is provided which initiates a continuous reduction of the rpm of the spinning rotor in case of thread breakage.
  • a suction airstream aspirates all still remaining fibers from the spinning rotor.
  • a pressurized airstream is applied to the fiber collection channel or groove, whose entire extent is led under this pressurized airstream by slow rotation of the spinning rotor.
  • This known apparatus is expensive because it requires a special low speed drive for the spinning rotor and its operation technique is time-consuming.
  • an apparatus for the removing of deposits in spinning rotors on open end spinning frames At least one spinning rotor is provided.
  • a respective pneumatic cleaning instrumentality is operatively associated with each spinning rotor.
  • the fibers and/or other foreign bodies not spun into thread are freed from the respective rotor by its associated cleaning instrumentality.
  • a thread monitor is provided which initiates a continuous reduction of the rpm of the spinning rotor in the case of thread breakage.
  • a timing device responsive to output from the thread monitor indicative of thread breakage, controls the cleaning instrumentality to effect the start of cleaning after a predetermined lapse of time from the instant of thread breakage as signaled by the monitor. The timing device also effects the termination of the cleaning operation upon the lapse of an additional period of time.
  • the thread monitor turns on the timing device which, after a first predetermined time period so chosen that the rpm of the spinning rotor has been reduced to an rpm permitting the effectiveness of the cleaning instrumentality, produces an enabling control signal which actuates the cleaning instrumentality. After a second predetermined time interval, the timing device causes the cleaning instrumentality to become ineffective, a disabling control signal being produced for this purpose.
  • the suitable time periods of the first and second time intervals can be simply determined by empirical experiment, and can remain valid for all spinning stations of the particular spinning machine.
  • the second time interval is chosen so that during that time interval the cleaning apparatus fulfills its cleaning function under normal, expected circumstances.
  • FIG. 1 is a partially schematic, partially sectional side view of an apparatus for removing deposits from spinning rotors on an open end spinning frame, drive and cleaning members, as well as the associated control and switching elements being shown, according to an illustrative embodiment of the present invention.
  • FIG. 2 is a diagrammatic, detailed view of the rotor drive and braking arrangements of the apparatus of FIG. 1.
  • FIG. 3 is a graphic representation of the rpm versus time characteristic of an apparatus according to the present invention showing the cooperation of the rotor drive and the cleaning instrumentality, partly solid and partly broken lines showing the rpm of the spinning rotor as a function of the time.
  • the spinning machine shown in FIGS. 1 and 2 includes a spinning rotor 1, carried in a bearing 2 and drivable by a tangential belt 4 which contacts a conventional whorl 3 of the spinning rotor l.
  • a cylindrical region of a stationary base plate 5 extends into the interior of spinning rotor 1.
  • a substantially centrally located thread removal channel 6 is provided in the base plate 5.
  • a closable pressurized air channel 7, which is connected to a pressurized air source 26 shown with dash-dotted lines, is connected via an air line also shown diagrammatically as a dash-dotted line for the sake of clarity.
  • a pressurized airstream developed by the pressurized air source 26, can pass through a blow nozzle 14 forming the outlet of the pressurized air channel 7 and can be delivered to a fiber collecting groove (channel) 25 of the spinning rotor 1 to effect the pneumatic cleaning thereof.
  • the control instrument 11 controls operating or setting members 12 and 13 which respectively open and close the air shut-off valve 8 associated with the pressurized air channel 7, the mechanical connections between each of the setting members 12, 13 and the valve 8 being shown diagrammatically as dashed lines.
  • the control instrument 11 can control an operating member 16 which can move a pivotal lever 17 (FIG. 2) in a counter-clockwise direction and against the effect ofa spring 19 tending to pull the pivotal lever 17 in clockwise direction up to a stop 18.
  • the pivotal lever 17 is pivotally mounted at a locally fixed point 20 and is equipped with a roller 22 anda brake pad 24.
  • the spinning rotor 1 and the base plate 5 are located in a chamber (not shown).
  • the rotor 1 In normal operation, the rotor 1 is driven by the tangential belt 4 at a high rpm n (FIG. 3). In a manner not further shown, loose fibers are continuously collected in the fiber collection channel or groove 25 of the rotor 1 and are twisted into the open end ofa forming thread, and the thread 15 is continuously pulled off to the outside through the channel 6.
  • the rpm of the spinning rotor 1 continuously diminishes.
  • a timing device 27, contained within the control instrument 11 is turned on and after a time interval Ar it delivers an enabling signal (electrical pulse) to the setting member 12.
  • the time interval A1 is so chosen that at its end, the rpm of the spinning rotor 1 has been reduced to a value n which is such that the cleaning instrumentality constituted by the air source 26, the timer 27, and the blow nozzle 14 can effectively clean the rotor 1 by blowing, i.e. it can pneumatically clean its fiber collection channel or groove 25, because only this groove contains contaminations, foreign bodies, and fibers not spun into the thread 15, so that it is sufficient to clean the fiber collection channel or groove 25 pneumatically.
  • the time interval A1 ends at a time t At this time i the control instrument 11 causes the generation of a control pulse which is fed to the setting member 12, which thereupon opens the valve 8, so that the cleaning instrumentality 26, 8, 7, 14 is effective to pass air, and pressurized air is blown out of the nozzle 14 into the fiber collection channel or groove 25 for cleaning the channel or groove 25.
  • the valve 8 remains open until the control instrument l1 delivers another control pulse to the setting member 13 at the end of a predetermined, time interval At35, i.e. at a point designated in the exemplary embodiment of FIG. 3 as which causes the setting member 13 to close the valve 8 and to terminate the blowing of pressurized air out of the nozzle 14.
  • the time interval A1 at the termination of which the timing device 27 contained within the control instrument l1 delivers a control pulse to the setting member 12 for the purpose of opening the shut-off valve 8 is so chosen that at the time 1 the rpm of the spinning rotor l is already so diminished that the pneumatic cleaning can be fully effective.
  • the length of this time interval depends on the operational rpm n of the spinning rotor l and also on its inertial mass; further it depends on the force with which the brake pad 24 is pressed against the whorl 3 and it also depends on other factors and is suitably determined by experiments.
  • the time interval At during which the cleaning apparatus is effective because of the opened valve 8, is also suitably determined by experi ments, so that the spinning rotor 1 will, under normal circumstances, be reliably cleaned of all deposits.
  • the control pulse for closing the shut-off valve 8 is delivered to the setting member 13 only when the spinning rotor 1 is already stationary or very nearly stationary.
  • the spinning rotor 1 is again connected with its drive belt 4 and accelerated thereby to its operational rpm 11,, as is illustrated in FIG. 3 by the broken line.
  • This time t can be measured by the timing device 27 either starting from the time t, resulting in a time interval A1,, or from time i resulting in a time interval At The control pulse triggered at time 1, causes the control instrument 11 to deliver an operating pulse to the operating member 16,
  • the cleaning operation is terminated only at a time t, or at some other suitable time.
  • this time at which the valve 8 is closed off again, is generally so chosen that the rpm of the spinning rotor 1 has not exceeded a value n at this time, so that this time would lie within the time interval
  • the thread monitor 9' causes the release of the driving connection between the spinning rotor 1 and its tangential drive belt 4, so that, during each arrest of the machine, all spinning rotors are pneumatically cleaned.
  • an apparatus for removing of deposits from at least one spinning rotor on an open end spinning frame including a respective pneumatic cleaning instrumentality operatively associated with each spinning rotor for freeing fibers and other foreign bodies, if any, not spun into thread from the respective rotor, and a thread monitor provided for initiating a continuous reduction of the rpm of the spinning rotor in case of thread breakage
  • the improvement comprising a timing device responsive to output from said thread monitor indicative of thread breakage for controlling the cleaning instrumentality to effect the start of cleaning after a predetermined lapse of time from the instant of thread breakage as signaled by said monitor, said timing device also effecting the termination of the cleaning operation upon the lapse of an additional period of time.
  • An arrangement according to claim 1 including setting means and drive means, and wherein said timing device is operatively arranged to produce a control signal which is coupled to said setting means for reconnecting said spinning rotor with said drive means.
  • timing device also starts its working cycle whenever the entire apparatus is stopped, i.e. when all of the spinning rotors of said apparatus are stopped.
  • An arrangement according to claim 1 including drive means for said rotor, and wherein said thread monitor produces an output signal for effecting release of the driving connection between said spinning rotor and its said drive means upon the occurrence of a signal indicative of thread breakage.
  • timing device also starts its working cycle whenever the entire apparatus is stopped, i.e. when all of the spinning rotors of said apparatus are stopped.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US474050A 1973-05-28 1974-05-28 Apparatus for cleaning spinning rotors Expired - Lifetime US3895483A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2327127A DE2327127A1 (de) 1973-05-28 1973-05-28 Vorrichtung zum reinigen von spinnrotoren an oe-spinnmaschinen

Publications (1)

Publication Number Publication Date
US3895483A true US3895483A (en) 1975-07-22

Family

ID=5882360

Family Applications (1)

Application Number Title Priority Date Filing Date
US474050A Expired - Lifetime US3895483A (en) 1973-05-28 1974-05-28 Apparatus for cleaning spinning rotors

Country Status (5)

Country Link
US (1) US3895483A (enrdf_load_html_response)
JP (1) JPS5018737A (enrdf_load_html_response)
CH (1) CH568406A5 (enrdf_load_html_response)
DE (1) DE2327127A1 (enrdf_load_html_response)
GB (1) GB1465180A (enrdf_load_html_response)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4057955A (en) * 1975-06-03 1977-11-15 Nuova San Giorgio S.P.A. Cleaning device for open-end spinning units
US4069654A (en) * 1975-11-24 1978-01-24 Nuova San Giorgio S.P.A. Cleaning device for open end spinning units
US4166356A (en) * 1978-01-11 1979-09-04 Vyzkumny Ustav Bavlnarsky Method of and apparatus for pneumatically removing a fibrous ribbon or a severed yarn end from the spinning rotor of an open-end spinning machine
FR2419986A1 (fr) * 1978-03-18 1979-10-12 Schubert & Salzer Maschinen Procede et appareil pour amorcer separement le filage dans des dispositifs individuels de filature a fibres liberees
US4176512A (en) * 1976-08-26 1979-12-04 Rieter Machine Works Ltd. Rotor braking apparatus at each spinning unit of an open-end spinning machine
US4211063A (en) * 1977-08-05 1980-07-08 Schubert & Salzer Method and device for cleaning spinning rotors in open-end spinning mechanism
US4403472A (en) * 1981-08-11 1983-09-13 Rieter Machine Works Limited Method of cleaning spinning rotors and apparatus for carrying out the method
US4612764A (en) * 1983-10-07 1986-09-23 Hans Stahlecker Conditioning arrangement for open-end friction spinning machine
US4660372A (en) * 1983-12-24 1987-04-28 Fritz Stahlecker Driving arrangement for open-end friction spinning machines
US4691509A (en) * 1984-01-25 1987-09-08 Fritz Stahlecker Open-end friction spinning machine
US4691508A (en) * 1985-02-27 1987-09-08 Zinser Textilmaschinen Gmbh Spinning or twisting machine with a drive belt performance monitor
US4893462A (en) * 1987-08-10 1990-01-16 Schubert & Salzer Maschinenfabrik Aktiengesellschaft Open-end spinning machine and process for the start-up of such a device
CN109837620A (zh) * 2017-11-27 2019-06-04 塞维欧纺织机械股份公司 自由端纺纱机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004016547B4 (de) * 2004-03-24 2013-08-22 Rieter Ingolstadt Gmbh Verfahren zum Öffnen bzw. Reinigen einer Spinnmaschine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3524312A (en) * 1966-08-11 1970-08-18 Schubert & Salzer Maschinen Method and apparatus for cleaning rotary spinning chamber
US3597911A (en) * 1966-08-24 1971-08-10 Rieter Ag Maschf Method and apparatus for cleaning open-end spinning devices
US3739565A (en) * 1971-01-29 1973-06-19 Luwa Ag Method and apparatus for cleaning the spinning rotors of open-end spinning equipment
US3796034A (en) * 1971-11-30 1974-03-12 Zinser Textilmaschinen Gmbh Open-end spinning apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3524312A (en) * 1966-08-11 1970-08-18 Schubert & Salzer Maschinen Method and apparatus for cleaning rotary spinning chamber
US3597911A (en) * 1966-08-24 1971-08-10 Rieter Ag Maschf Method and apparatus for cleaning open-end spinning devices
US3739565A (en) * 1971-01-29 1973-06-19 Luwa Ag Method and apparatus for cleaning the spinning rotors of open-end spinning equipment
US3796034A (en) * 1971-11-30 1974-03-12 Zinser Textilmaschinen Gmbh Open-end spinning apparatus

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4057955A (en) * 1975-06-03 1977-11-15 Nuova San Giorgio S.P.A. Cleaning device for open-end spinning units
US4069654A (en) * 1975-11-24 1978-01-24 Nuova San Giorgio S.P.A. Cleaning device for open end spinning units
US4176512A (en) * 1976-08-26 1979-12-04 Rieter Machine Works Ltd. Rotor braking apparatus at each spinning unit of an open-end spinning machine
US4211063A (en) * 1977-08-05 1980-07-08 Schubert & Salzer Method and device for cleaning spinning rotors in open-end spinning mechanism
US4166356A (en) * 1978-01-11 1979-09-04 Vyzkumny Ustav Bavlnarsky Method of and apparatus for pneumatically removing a fibrous ribbon or a severed yarn end from the spinning rotor of an open-end spinning machine
US4265083A (en) * 1978-03-18 1981-05-05 Schubert & Salzer Process and apparatus for individual piecing up of single open end spinning apparatus
FR2419986A1 (fr) * 1978-03-18 1979-10-12 Schubert & Salzer Maschinen Procede et appareil pour amorcer separement le filage dans des dispositifs individuels de filature a fibres liberees
US4403472A (en) * 1981-08-11 1983-09-13 Rieter Machine Works Limited Method of cleaning spinning rotors and apparatus for carrying out the method
US4612764A (en) * 1983-10-07 1986-09-23 Hans Stahlecker Conditioning arrangement for open-end friction spinning machine
US4660372A (en) * 1983-12-24 1987-04-28 Fritz Stahlecker Driving arrangement for open-end friction spinning machines
US4691509A (en) * 1984-01-25 1987-09-08 Fritz Stahlecker Open-end friction spinning machine
US4691508A (en) * 1985-02-27 1987-09-08 Zinser Textilmaschinen Gmbh Spinning or twisting machine with a drive belt performance monitor
US4893462A (en) * 1987-08-10 1990-01-16 Schubert & Salzer Maschinenfabrik Aktiengesellschaft Open-end spinning machine and process for the start-up of such a device
CN109837620A (zh) * 2017-11-27 2019-06-04 塞维欧纺织机械股份公司 自由端纺纱机
CN109837620B (zh) * 2017-11-27 2023-05-05 塞维欧纺织机械股份公司 自由端纺纱机

Also Published As

Publication number Publication date
GB1465180A (en) 1977-02-23
DE2327127A1 (de) 1974-12-19
JPS5018737A (enrdf_load_html_response) 1975-02-27
CH568406A5 (enrdf_load_html_response) 1975-10-31

Similar Documents

Publication Publication Date Title
US3895483A (en) Apparatus for cleaning spinning rotors
US4022011A (en) Yarn piecing method for open-end spinning machine
US9103053B2 (en) Method for operating an open-end rotor spinning machine
US4211063A (en) Method and device for cleaning spinning rotors in open-end spinning mechanism
US3987610A (en) Method and apparatus for start-spinning a thread on an open-end spinning unit of an open-end spinning machine
GB1530919A (en) Method of start-spinning a thread in an open-end spinning unit and machines for carrying out the method
JPH0835131A (ja) オープンエンド紡糸装置における糸継ぎ方法および装置
US3455095A (en) Spinning of textile yarns
US3939638A (en) Method for automatically starting and stopping an open-end spinning machine
US3845612A (en) Spinning apparatus
US4276741A (en) Method and apparatus for start-spinning a thread on an open-end spinning unit
US4055942A (en) Method for piecing a thread on open-end spinning units
US3763641A (en) Method and apparatus for removing impurities released from staple fibers
US4020622A (en) Method and apparatus for a joint start-up and stopping of the spinning positions of an open-end spinning machine
US4222225A (en) Open end spinning machine having piecing apparatus
JPH038819A (ja) オープンエンド紡糸機の糸継ぎ方法及び装置
US4246749A (en) Method of and apparatus for piecing yarn in open end rotor spinning units
US4020621A (en) Method of and apparatus for ending the broken yarn in an open-end spinning system
US7464530B2 (en) Process for preparing a piecing operation in an air jet spinning arrangement
US4369620A (en) Apparatus for spinning-in yarns in open-end rotor spinning units
US4339914A (en) Method and apparatus for cleaning an open-end spinning rotor
US5463860A (en) Process and device for piecing an open-end spinning device
US4606184A (en) Arrangement for stopping and starting an open-end friction spinning unit
US5839266A (en) Variable speed trash belt for open-end spinning machine and method
US4541232A (en) Device for driving a friction spinning unit