US3153837A - Device for crimping synthetic threads - Google Patents

Device for crimping synthetic threads Download PDF

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Publication number
US3153837A
US3153837A US25021A US2502160A US3153837A US 3153837 A US3153837 A US 3153837A US 25021 A US25021 A US 25021A US 2502160 A US2502160 A US 2502160A US 3153837 A US3153837 A US 3153837A
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Prior art keywords
chamber
crimping
thread
threads
speeds
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Expired - Lifetime
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US25021A
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English (en)
Inventor
Schippers Heinz
Lohest Hans
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Oerlikon Barmag AG
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Barmag Barmer Maschinenfabrik AG
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    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/12—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes
    • D02G1/125—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes including means for monitoring or controlling yarn processing

Definitions

  • FIGI INVENTORS HE-INZ SCHIPPERS HANS LOHEST ATT'YS Oct. 27, 1964 H. SCHIPPERS ET AL DEVICE FOR CRIMPING SYNTHETIC THREADS Filed April 27, 1960 FIGS , MI 1 I 2 Sheets-Sheet 2 HEINZ SCHIPPERS NS LOHEST v,
  • the present invention is directed to means for crimping filaments such as nylon, rayon, acetate, vinyl resins, polyesters, acrylic, and vinylidene chlorine filaments. More particularly, the invent-ion relates to a crimping device which includes a crimping chamber and to means for controlling the amount of thread material in said chamber by regulating either the rate at which the filaments are fed to the chamber or the rate at which the crimped threads are removed from the chamber.
  • filaments are passed from a supply point to a stufling chamber by means of paired conveyor rollers.
  • pressure is applied to the threads which compresses them tightly into layers.
  • the layers of thread are passed through a heating zone and then a cooling zone within the chamber in order to fix the crimp. Thereafter, the crimped material is drawn ofl from the exit end of the chamber and is conducted to a winding device.
  • One of the important requirements of a crimping process is that the material must be fed into the stuffing chamber at one end and draw off from the other end of the chamber in such a manner that the residence time of the thread in the heating zone remains as constant as possible and does not exceed a particular limit. It is also important in continuous operations to make certain that the chamber never becomes entirely empty.
  • either the rate at which the feed rollers supply the thread to the stufiing chamber or the speed of the drawing-off rollers are controlled by means of an on and otf switch which is intermittently operated by means of the counter-pressure agent.
  • This type of apparatus also has not met with any substantial success.
  • One reason is that the slip motors which are usually used in such a device behave differently in response to slight changes in operating conditions such as hearing friction. For this reason it is very difiicult to preset a motor so that it can be speeded up or slowed down properly in response to changes in position of the counter-pressure agent.
  • Another object of the invention is to provide an improved means for regulating the feed and/ or withdrawal of material from the stuffing chamber of a crimping device.
  • FIGURE 1 is a diagrammatic View, partly in section, of a crimping apparatus embodying the present inven tion;
  • FIGURE'Z is a cross-sectional view taken along line 2-2 of FIG. 1;
  • FIGURE 3 is a diagrammatic view showing the wiring arrangement of a particular series installation
  • FIG. 4 is a diagrammatic view, partly in section, showing one embodiment of the present invention.
  • FIG. 5 is a diagrammatic view, partly in section, showing one embodiment of the present invention.
  • FIG. 6 is a diagrammatic view, partly in section, showing one embodiment of the present invention.
  • FIG. 7 is a diagrammatic view, partly in section, showing one embodiment of the present invention.
  • FIG. 8 is a diagrammatic view, partly in section, showing one embodiment of the present invention.
  • thread 1 is shown as being passed from a supply point (not pictured) through paired conveyor rollers 2 and 3 into stuffing chamber 5 of cylindrical tube 4.
  • counter-pressure agent which in this instance is ball packing 6 into layers which lie tightly one upon the other.
  • the thread emerges from the plugin a crimped condition and is drawn oil through the ball packing.
  • the lower part or" the chamber is equipped with a heating means which is not shown in the drawing.
  • the upper part of the chamber usually includes a corresponding cooling device.
  • the heating and cooling sections of the chamber serve to fix the crimp
  • plug 7 presses the ball packing toward the end of the chamber where-an adjustable member 8, which is pictured as a'feeler prong, is slidably mounted on carrier arm 9.
  • the position of member 8 changes as the chamber filling either increases or decreases.
  • Carrier arm 9 is mounted on sleeve 10 which in turn is slidably mounted on rod 11 'which is attached to cylindrical tube 4; By means of-set screw 12, sleeve 10 can be fixed at any desired height.
  • a conventional throw-over switch 13 Also mounted on sleeve 10, and at a sufficient distance from carrier arm 9, is a conventional throw-over switch 13.
  • This switch conveniently can be a micro switch having a push button 14, which is operated by the feeler and setting member 8 in accordance with the filling of the chamber.
  • push-button 14 can be considered a feeler prong and the switch 13 can be placed directly on the rim of cylindrical tube 4 (see FIG. 4).
  • the crimped thread is drawn off from chamber 5, past the feeler prong and through eye 15 which can conveniently be arranged on carrier arm 9 (see FIG. 2). If it is desired, feeler plate 16 of feeler and setting member 8 may be pierced for passage of the crimped thread (see FIG. 5). Another possibility is to make the entire feeler prong hollow (see FIGS. 6 and 7).
  • the drawing 01f of the thread may be carried out by a special device placed between the crimping chamber and the winding means (see FIG. 8). In the drawing, however, the crimped thread is drawn off directly by the wind- Patented Oct. 27, 1964 ing means.
  • the winding device is arranged in a known manner.
  • Drive roller 17 having grooves 18 for the backand-forth distribution of the thread, along with drive shaft 19 of drive roller 17 is carried on the machine frame (not pictured) at points'20 and 21.
  • Shaft 19 is driven by motor 22:: operating through pulleys 23 and 24 and belt 25.
  • Winding 27 is formed on spool holder 26. Winding 27 is frictionally driven and swings on rod 28 at 29 along the spoolholder carrier 30 as the winding diameter increases.
  • the crimped thread is drawn ofl? from the crimping chamber at a speed which corresponds to the winding speed.
  • the speed at which the thread is drawn off is maintained at one of two rates depending uponthe chamber filling. These two velocity stages are proportioned in such a manner that the thread plug either slowly grows or gradually is diminished.
  • the drawing ofl? speeds are controlled as accurately as possible by connecting drive motor 22 to one of two power sources of differing frequency. In this manner it is possible to obtain constant rates of revolution in each stage This is particularly important where the Winding program includes a series of stufiing chambers and winding devices.
  • motor 22 is connected by means of magnetic throw-over switch 31, which can be a relay,
  • the throw-over switch 31 is operated by relay coil 32 which lies in one control-current circuit having an auxiliary potential source R"O. This control-current circuit is' closed or interrupted, depending upon the chamber filling, by the micro switch 13.
  • motor 22 is connected to the power source RST.
  • the winding speed or drawing ofi' speed is such that the chamber is being slowly filled.
  • feeler prong 8 is raised and eventually contacts push-button 14 on mirco switch 13. This initiates a response in relay coil 32 and causes magnetic throw-over switch 31 to be shifted.
  • Motor 22 is thereby connected to supply source RS'T which causes the motor rate to increase along with the drawing off speed. For this reason, thread plug 7 begins to diminish slowly. in size.
  • feeler prong 8 also falls and in so doing again operates micro switch 13 so that the relay coil 32 activates magnetic throw-over switch 31. In this manner, the motor once more is connected to upper supply main RST and the motor again slows down.
  • the frequencies required at any given time for carrying out a particular winding program as well as the difference between the two frequencies can be set by corresponding gearsin the transformer unit.
  • a transformer or converter unit is represented for a series installation of compression-crimping devices according to thersubject invention.
  • Drive motor 33 which can be a three-phase motor runs with a constant rate of revolution and drives generators 34 and 35.
  • a gear 36 is wired between motor 33 and generator 34. If the winding program is altered, for example, by substituting threads of a different denier or if another crimping intensity is desired, the entire level of the winding velocity can be raised by means of gear 36.
  • Generator 34 determines thelower frequency and generator 35 the higher frequency.
  • a second gear 37 is interposed between generators 34 and 35 which is used to provide a predetermined frequency diiference.
  • generator 35 situated ahead of generator 34.
  • the generators may be arranged in such. a manner that the motor is located between them and drives a generator with each shaft end.
  • the drawing off rate or feed rate of the threads be controlled by alternately switching the driving mechanism between two predetermined speeds. Between the two speeds, which lie close together, is the required mean winding speed.
  • the drive of the feed or drawing off means is intermittently interrupted and the rollers in question are brought to a stop. After the power is again switched on, the paired rollers are once more driven at full speed.
  • the thread can easily be either overstretched or broken due to the sudden tension placed on the thread by starting and stopping the rollers.
  • the prior art devices do not maintain the thread in the heating zone of the chamber for a uniform period of time. This causes the crimping intensity to deviate visibly between various sections of the thread.
  • the subject invention provides a gentle and uniform handling of the thread. This is accomplished by having the controlled drawing off or feed operation continue without interruption and by maintaining as small as possible the difference in speed between the two preadjusted stages.
  • the stufling chamber is operatively associated with a switchover device, through the counter-pressure agent.
  • the chamber filling is either gradually increasing or diminishing and as it reaches a desired level the counter-pressure agent acts indirectly or directly on a device which adjusts the drive for either the feed or drawing ofi means to one of the two speeds.
  • This adjusting device may consist of a mechanical, electrical, electromagnetic, hydraulic, or other means which in themselves are known.
  • the adjusting device may include a friction disk or an eddy current coupling which regulates the switching or wiring and connects the motor to one of two potentials. Other equivalent means can, of course, be used to accomplish the desired result. 7
  • Apparatus for crimping synthetic threads which comprises: a crimping chamber, drive means for conveying synthetic threads through said chamber, compressing means associated with said chamber for forming said threads into layers within said chamber, control means for regulating said drive means, said control means operating in response to changes in the level to which said chamber is filled with said thread material, said control means being characterized by the fact that the regulated rate alternately shifts from one to the other of two preselected speeds, the mean speed desired for said crimping apparatus lying between said two speeds, whereby the thread plug formed in said chamber alternates between a gradual growth and a gradual diminution.
  • Apparatus for crimping synthetic threads which comprises: a crimping chamber, drive means associated with said chamber for conveying synthetic threads through said chamber, compressing mean within said chamber for crimping said threads, said compressing means being arranged to rise and fall within said chamber in response to changes in the level to which said chamber is filled with said thread, feeler means associated with said compressing means and designed to change its position in accordance with the changes in the position of said compressing means, said feeler means being arranged to operate control means for regulating said drive means, said control means being characterized by the fact that the regulated rate alternately shifts from one to the other of two preselected speeds, the mean speed desired for said crimping apparatus lying between said two speeds, whereby the thread plug formed in said chamber alternates between a gradual growth and a gradual diminution.
  • Apparatus for crimping synthetic threads which comprises: a crimping chamber, drive means associated with said chamber for passing synthetic threads into said chamber, drive means associated with said chamber for removing synthetic threads from said chamber, compressing means within said chamber for crimping said threads, said compressing means being arranged to rise and fall within said chamber in response to changes in the level to which said chamber is filled with said thread, feeier means associated with said compressing means and designed to change its position in accordance with the changes in the position of said compressing means, said feeler means being arranged to operate control means for regulating the drive mean for passing thread into said chamber, said control means being characterized by the fact that the regulated rate alternately shifts from one to the other of two preselected speeds, the mean speed desired for said crimping apparatus lying between said two speeds.
  • Apparatus for crimping synthetic threads which comprises: a crimping chamber, drive means associated with said chamber for passing synthetic threads into said chamber, drive means associated with said chamber for removing synthetic threads from said chamber, compressing means Within said chamber for crimping said threads, compressing means being arranged to rise and fall within said chamber in response to changes in the level to which said chamber is filled with said thread, feeler means associated with said compressing means and designed to change its position in accordance with the changes in the position of said compressing means, said feeler means being arranged to operate control means for regulating the drive means for removing said thread from said chamber, said control mean being characterized by the fact that the regulated rate alternately shifts from one to the other of two preselected speeds, the mean speed desired for said crimping apparatus lying between said two speeds.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
US25021A 1959-04-30 1960-04-27 Device for crimping synthetic threads Expired - Lifetime US3153837A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB53087A DE1199430B (de) 1959-04-30 1959-04-30 Vorrichtung zum Kraeuseln von Kunstfaeden nach dem Stauchverfahren

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US3153837A true US3153837A (en) 1964-10-27

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US25021A Expired - Lifetime US3153837A (en) 1959-04-30 1960-04-27 Device for crimping synthetic threads

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US (1) US3153837A (da)
BE (1) BE589191A (da)
CH (1) CH381352A (da)
DE (1) DE1199430B (da)
FR (1) FR1257918A (da)
GB (1) GB888786A (da)
NL (2) NL250701A (da)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3300830A (en) * 1965-06-29 1967-01-31 Fiber Industries Inc Apparatus for uniformly crimping filaments
US3440699A (en) * 1967-09-29 1969-04-29 Techniservice Corp Process and apparatus for strand treatment
US3464096A (en) * 1965-10-23 1969-09-02 Klinger Mfg Co Ltd Apparatus and method for crimping yarn
US3579760A (en) * 1969-06-16 1971-05-25 Northrop Carolina Inc Texturizing apparatus
US3650001A (en) * 1970-12-24 1972-03-21 Phillips Petroleum Co Yarn texturing apparatus
US3675286A (en) * 1970-11-12 1972-07-11 Bancroft & Sons Co J Synchronizing yarn winding to stuffer crimper output
US3693222A (en) * 1970-12-28 1972-09-26 Phillips Petroleum Co Yarn texturing apparatus
US3936916A (en) * 1974-05-09 1976-02-10 Phillips Petroleum Company Method and apparatus for the production of textured yarn
US3977057A (en) * 1975-01-06 1976-08-31 Phillips Petroleum Company Apparatus for the production of yarn

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2734251A (en) * 1954-10-08 1956-02-14 Crimping apparatus
US2740992A (en) * 1955-03-01 1956-04-10 Bancroft & Sons Co J Crimping and winding apparatus
US2758358A (en) * 1953-08-06 1956-08-14 Alexander Smith Inc Filament crimping apparatus
US2888733A (en) * 1953-06-27 1959-06-02 Inventa Ag Process for the fixation of pressure crimped synthetic fibers
US2914835A (en) * 1954-03-04 1959-12-01 Owens Corning Fiberglass Corp Method of crimping fibrous glass strand
US2960730A (en) * 1957-06-13 1960-11-22 Bancroft & Sons Co J Crimping apparatus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB391932A (en) * 1932-02-09 1933-05-11 British Thomson Houston Co Ltd Improvements in and relating to electric motor control systems
DE668751C (de) * 1934-08-03 1938-12-13 Willi Schweitzer Elektromotorischer Antrieb fuer Stoffbahnfoerdereinrichtungen, insbesondere fuer Tuchmessmaschinen
US2597133A (en) * 1946-05-10 1952-05-20 Westinghouse Electric Corp Control system
US2597136A (en) * 1947-02-21 1952-05-20 Westinghouse Electric Corp Electronic motor control
AT194051B (de) * 1953-08-06 1957-12-27 Alexander Smith Inc Stauchkräuselvorrichtung

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2888733A (en) * 1953-06-27 1959-06-02 Inventa Ag Process for the fixation of pressure crimped synthetic fibers
US2758358A (en) * 1953-08-06 1956-08-14 Alexander Smith Inc Filament crimping apparatus
US2914835A (en) * 1954-03-04 1959-12-01 Owens Corning Fiberglass Corp Method of crimping fibrous glass strand
US2734251A (en) * 1954-10-08 1956-02-14 Crimping apparatus
US2734229A (en) * 1954-10-08 1956-02-14 Crimping apparatus
US2734252A (en) * 1954-10-08 1956-02-14 Crimping apparatus
US2740992A (en) * 1955-03-01 1956-04-10 Bancroft & Sons Co J Crimping and winding apparatus
US2960730A (en) * 1957-06-13 1960-11-22 Bancroft & Sons Co J Crimping apparatus

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3300830A (en) * 1965-06-29 1967-01-31 Fiber Industries Inc Apparatus for uniformly crimping filaments
US3464096A (en) * 1965-10-23 1969-09-02 Klinger Mfg Co Ltd Apparatus and method for crimping yarn
US3440699A (en) * 1967-09-29 1969-04-29 Techniservice Corp Process and apparatus for strand treatment
US3579760A (en) * 1969-06-16 1971-05-25 Northrop Carolina Inc Texturizing apparatus
US3675286A (en) * 1970-11-12 1972-07-11 Bancroft & Sons Co J Synchronizing yarn winding to stuffer crimper output
US3650001A (en) * 1970-12-24 1972-03-21 Phillips Petroleum Co Yarn texturing apparatus
US3693222A (en) * 1970-12-28 1972-09-26 Phillips Petroleum Co Yarn texturing apparatus
US3936916A (en) * 1974-05-09 1976-02-10 Phillips Petroleum Company Method and apparatus for the production of textured yarn
US3977057A (en) * 1975-01-06 1976-08-31 Phillips Petroleum Company Apparatus for the production of yarn

Also Published As

Publication number Publication date
NL250701A (da)
BE589191A (fr) 1960-07-18
FR1257918A (fr) 1961-04-07
GB888786A (en) 1962-02-07
CH381352A (de) 1964-08-31
NL127107C (da)
DE1199430B (de) 1965-08-26

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