US3398688A - Apparatus for making knop yarn - Google Patents

Apparatus for making knop yarn Download PDF

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Publication number
US3398688A
US3398688A US411395A US41139564A US3398688A US 3398688 A US3398688 A US 3398688A US 411395 A US411395 A US 411395A US 41139564 A US41139564 A US 41139564A US 3398688 A US3398688 A US 3398688A
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Prior art keywords
pump
hydraulic
film
valve
spinning
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Expired - Lifetime
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US411395A
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English (en)
Inventor
Colombu Eugene
Rufer Alfred
Zumstein Andre
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Chimiotex SA
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Chimiotex
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/20—Formation of filaments, threads, or the like with varying denier along their length

Definitions

  • Stich apparatus comprises a pump adapted to supply the spinning solution for producing said yarn, a hydraulic motor connected to drive said pump and two pumps supplying fluid to said motor.
  • a by-pass valve for one of the two pumps is controlled in response signals from a traveling photographic film. The volume of fluid by-passed varies the quantity of fluid supplies to the motor which in turn varies the rate of pumping of the first mentioned pump.
  • the present invention relates to a process for the production of artificial and synthetic flake and knop yarns by controlling the drive of the spinning pump by photoelectric means with the aid of a hydraulic motor, the apparatus necessary for this purpose, and also the flake and knop yarns which are produced according to this process.
  • the process for the production of flake or knop filaments by conveying different quantities of spinning material with the use of an elect-ronic/magnetic control of a valve in a hydraulic driving system is characterised in that the control impulses are produced photoelectrically and thereby pressure pulses are set up in a first pipe on the output side of a first pump, and these pulses, through a valve passing in one direction, influence the hydraulic system of the flow supplied by a second pump and thereby drives at different :speeds the hydraulic motor which is coupled fast to the volumetric pumps an which is included in this second system.
  • the apparatus for carrying this process into effect is charatcerised by a light source, an unwinding photographic film provided with a code and a photoelectric cell for generating the control impulses, by two systems supplied by hydraulic pumps, of which the first opens by way of an electromagnetic valve into an oil reservoir and through a one-way valve into the second system, and by a hydraulic motor connected into the second system.
  • a denier fluctuation programme which is recorded on a photographic film, is transmitted by a light source onto a photoelectric cell or a similar resistance which can be influenced by light fluctuations and converted into current fluctuations which, after amplification, actuate a valve arranged in the pipe on the output side of a hydraulic pump, so that pressure pulses are set up in this pipe.
  • These are propagated through a nonreturn valve to a pipe on the output side of a second hydraulic pump, into which is incorporated the hydraulic motor which drives the volumetric pumps and which is driven at different speeds by the pressure pulses.
  • the process can be used in the wet, dry and melt spinning processes.
  • the denier fluctuations must nevertheless have a certain minimum value, so that they are not reduced during the drawing and provision must additionally be made for a rapid solidifying of the freshly spun filaments.
  • Particularly favourable results are however obtained with the wet spinning of viscose.
  • the process is particularly advantageous for the driving of complete spinning machines or a plurality of machines, since only one programme control arrangement and, for each machine, only one hydraulic drive, are required, which can easily be fitted in the driving box of the spinning machines.
  • FIG. 1 shows the optical/ electronic control section.
  • FIG. 2 shows the hydraulic driving section
  • FIG. 3 shows diagrammatically a portion of the control film with the associated Uster-diagram of a knop filament produced therewith.
  • the references 1 and 2 indicate the magazine drums for the film 3. These can be driven in known manner as by means of a spring wire.
  • the film is moved by means of driven sprockets 4, engaging in the lateral perforations of the film 3.
  • the film 3 is illuminated by the lamp 5, which is disposed in a box 6 provided with a diaphragm.
  • pulses are generated in the photoelectric cell 7 and amplified in the amplifier 8, so that they are made available to the hydraulic driving section through the electric line 9.
  • the denier fluctuation programme can be drawn on a strip on the drawing board and be transferred from said strip with suitable magnification or reduction to the film 3.
  • Other possibilities consist in the recording of impulses originating from -any radioactive source, and after any required corrections as regards length and spacing, images of these pulses can be formed on the film as a black-and-white code.
  • the recording in the form of rectangles has proved to be particularly advantageous, since several tracks can be recorded on a single film, which tracks in their turn can be combined and arranged one after the other as desired.
  • the film 3 can be provided at the leading and trailing ends with additional markings which initiate pulses inl additional photoelectric cells for reversing the direction of4 travel and possibility for additional lateral displacement n asaaesa reservoir filled with hydraulic oil and the two circulation systems 11 and 12.
  • the oil flowing from the reservoir 10 is circulated by a first pump 13, which is driven by an electric motor 14.
  • the pipe on the delivery side of the first pump 13 is split into two circulation systems 15 and 16.
  • an electromagnetic valve 17 Arranged in the pipe 15 is an electromagnetic valve 17 which is controlled by the pulses of the elctric line 9 and which interrupts the oil circulation returning to the reservoir 10 according to the required fiuctuations in denier.
  • the circulation system 12 is fed by a pump 18, which is driven by an electric motor 19.
  • the pump delivery pipe 20 communicates on the one hand, through a non-return valve 21, with the pipe 16, and on the other hand with a pipe 22, which opens through 4an adjustable pressurecontrol valve 23 into the intake pipe of the pump 18, and finally feeds the hydraulic motor through the pipe 24.
  • This motor 25 drives the spinning pumps of the spinning machine.
  • the delivery line of the motor 25 returns to the reservoir 10 by way of the adjustable pressure-control valve 26.
  • Filters for intercepting impurities can advantageously be included in the circulation systems 11 and 12.
  • the hydraulic system shown in FIG. 2 operates as follows:
  • the pump 13 circulates oil in the system 11 through the valve 17, which is open when no current is liowing.
  • the electromagnetic valve is now closed at irregular intervals and for different periods of time by amplified pulses supplied by the electric line 9.
  • the oil constantly delivered by the pump 13 is compelled to fiow through the non-return valve 21 into the pressure system 24 supplied by the pump 18, and this Oil then drives the hydraulic motor 25 and thus the spinning pumps.
  • the hydraulic motor 25 is driven at a higher speed through the pipe 24, and thus also the volumetric pumps of the spinning machine, whereby the liakes or knops are produced.
  • the basic denier of the flake or knop yarns is adjusted in advance for each spinning operation by means of the speed of the pump 18, which is advantageously infinitely variable.
  • the number and the duration of pulses are determined by the programme transmitter of FIG. l.
  • the fiake denier is adjusted by means of alterations in the delivery quantity of the pump 13.
  • the fiake form can be regulated within certain limits by means of the adjustable pressure control valve 26, which is connected after the motor 25, this more particularly infiuen-cing the form of the pressure decrease of the pressure/ time curve.
  • the said fiank is broader, whereas on the contrary it is steep when the pressure is adjusted to a high value, provided there are only infiexible members in all pressure lines, including those for the spinning composition. Therefore, if it is desired to produce knops with very marked limits, it is for example advisable, when spinning viscose, to replace the swan necks consisting of hard lead and which ⁇ are normally employed by swan necks made of stainless steel.
  • the adjustable pressure-control valve 23 in the pipe 22 ahead of the hydraulic motor 25 serves the purpose of protecting the said motor from excessively high pressure peaks. By suitable adjustment, it can also be used for infiuencing the pressure peak in the pipe leading to the hydraulic motor 25.
  • a 16 mm. ist film with a programme according to FIG. 3 is projected in the apparatus shown diagrammatically in FIG. l.
  • the magazine drums 1 and 2 contain a film with a running period of 4 hours. After this time, the film is switched over to running in the opposite direction by light marks or indexes, which operate on photoelectric cells arranged in the region of the driving sprockets 4, and at the same time a second programme track not shown in FIG. 3 is scanned. As a result, the same programme is only repeated every 8 hours. This time can be doubled by subsequent rearward scanning of the entire programme, so that repeating pattern formation in the fabrics produced from these yarns is impossible.
  • the film runs at a speed of 0.6 m./minute.
  • the pulse rate is 62 per minute.
  • the film is blackened, except for the programming 3a.
  • the electric pulses generated by these light-pervious areas 3a of the film are amplified up to a peak value of 24 volts, and through the electric line 9, these control the electromagnetic valve 17 of the hydraulic driving section of the volumetric pump shaft of the spinning machine, as shown diagrammatically in FG. 2.
  • the mean working pressure in the pipe 24 feeding the hydraulic motor 25 is 100 atm. gauge; the counteracting pressure produced by the adjustable pressure-control valve 26 is 5 atm. gauge.
  • the yarns which are produced have a mean count in the conditioned state of 450 denier (50 tex).
  • the thin areas have a mean count of 300 denier (33 tex) and the irregularly distributed fiakes have a minimum count of 750 denier (83 tex), a mean count of 850 denier (94 tex) and a maximum count of 1000 denier (lll tex).
  • Apparatus for making synthetic knop yarn comprising a pump adapted to supply the spinning solution for producing said yarn, a hydraulic motor connected to drive said pump, first hydraulic system including a pump connected to supply hydraulic fluid to said motor for actuating the same at a pre-determined rate, a second hydraulic system including a pump having an outlet connected to supply additional hydraulic iiuid to said motor, valve means connected to control the supply of said additional fluid from said second system to said motor, a travelling photographic film having a photographic track thereon, and means controlled by said track for pulsing said valve at predetermined intervals for thereby supplying additional fluid to said motor adapted to periodically increase the rate of said first pump for producing knops on said yarn.
  • control valve is operated electromagnetically and a light source and photocell are positioned to be controlled by said track and are connected to control said electromagnetically operated valve.
  • the pump in said second system includes a return line and said valve is disposed in said return line and is adapted to control the output pressure of said last pump and said last pump is connected to said hydraulic motor through a line having a non-return valve.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Artificial Filaments (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
US411395A 1963-11-18 1964-11-16 Apparatus for making knop yarn Expired - Lifetime US3398688A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1409663A CH414930A (de) 1963-11-18 1963-11-18 Verfahren zur Herstellung von Flammen- oder Noppengarnen

Publications (1)

Publication Number Publication Date
US3398688A true US3398688A (en) 1968-08-27

Family

ID=4397933

Family Applications (1)

Application Number Title Priority Date Filing Date
US411395A Expired - Lifetime US3398688A (en) 1963-11-18 1964-11-16 Apparatus for making knop yarn

Country Status (5)

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US (1) US3398688A (de)
AT (1) AT253672B (de)
BE (1) BE655589A (de)
CH (1) CH414930A (de)
GB (1) GB1017300A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3565286A (en) * 1968-10-18 1971-02-23 Cryogenic Technology Inc Liquid programming and pumping apparatus
US5769182A (en) * 1993-10-13 1998-06-23 Kvaerner Hymac Inc. Lubricant supply safety system
DE102004009718A1 (de) * 2004-02-27 2005-09-22 Ostermann, Jörn-Hinrich Münzmagazin

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2696266A (en) * 1951-04-11 1954-12-07 Richard L Tuve Means for mixing liquids under pressure and in desired proportions, especially for fire fighting
US2787221A (en) * 1952-10-14 1957-04-02 American Enka Corp Apparatus for producing nub yarn
US2904957A (en) * 1954-08-03 1959-09-22 Yale & Towne Mfg Co Hydraulic drive for industrial truck
US2917897A (en) * 1955-02-04 1959-12-22 Walter M Shaffer Hydraulic drive mechanism
US3013497A (en) * 1958-10-22 1961-12-19 Novo Ind Corp Automatic proportional metering and dispensing system
US3304869A (en) * 1963-10-29 1967-02-21 Phoenix Prec Instr Co Photoelectric dual pump control providing a constant combined output

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2696266A (en) * 1951-04-11 1954-12-07 Richard L Tuve Means for mixing liquids under pressure and in desired proportions, especially for fire fighting
US2787221A (en) * 1952-10-14 1957-04-02 American Enka Corp Apparatus for producing nub yarn
US2904957A (en) * 1954-08-03 1959-09-22 Yale & Towne Mfg Co Hydraulic drive for industrial truck
US2917897A (en) * 1955-02-04 1959-12-22 Walter M Shaffer Hydraulic drive mechanism
US3013497A (en) * 1958-10-22 1961-12-19 Novo Ind Corp Automatic proportional metering and dispensing system
US3304869A (en) * 1963-10-29 1967-02-21 Phoenix Prec Instr Co Photoelectric dual pump control providing a constant combined output

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3565286A (en) * 1968-10-18 1971-02-23 Cryogenic Technology Inc Liquid programming and pumping apparatus
US5769182A (en) * 1993-10-13 1998-06-23 Kvaerner Hymac Inc. Lubricant supply safety system
DE102004009718A1 (de) * 2004-02-27 2005-09-22 Ostermann, Jörn-Hinrich Münzmagazin
DE102004009718B4 (de) * 2004-02-27 2007-01-04 Ostermann, Jörn-Hinrich Münzmagazin

Also Published As

Publication number Publication date
AT253672B (de) 1967-04-25
CH414930A (de) 1966-06-15
BE655589A (de) 1965-05-12
GB1017300A (en) 1966-01-19

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