US3410071A - Method of and apparatus for the operation of a multiple twist, spinning, slubbing or like machine - Google Patents

Description

Nov. 12, 1968 w. HEIMES 3,410,071

METHOD OF AND APPARATUS FOR THE OPERATION OF A MULTIPLE TWIST. SPINNING, SLUBBING OR LIKE MACHINE Filed July 26, 1966 6 Sheets-Sheet 1 mnwmi' W. HEIMES Nov. 12, 1968 E L P I T m E Mm H FC m N OE IK TI AL R ER PO 0 G EN HI T B D RU 0L S 5 HUG TN T. RN AN PI PP As D NT S I FW OT D 0 H T E M 6 Sheets-Sheet Filed July '26. 1966 Ir ven tor. y W

. 1968 w. HEIMES 3,410,071

METHOD OF AND APPARATUS FOR THE OPERATION OF A MULTIPLE,

TWIST. SPINNING, SLUBBING OR LIKE MACHINE Filed July 26, 1966 6 Sheets-Sheet .5

lnventor: M M

3,410,071 PERATION OF A MULTIPLE Nov. 12, 1968 W. HEIMES AND APPARATUS FOR THE 0 METHOD OF TWI Filed July 26, 1966 ST. SPINNING, SLUBBING OR LIKE MACHINE 6 Sheets-Sheet 4.

2/ I W/nventor:

4 W W, M0

w. HEIMES 3,410,071 METHOD OF AND APPARATUS FOR THE OPERATION OF A MULTIPLE Nov. 12, 1968 TWIST. SPINNING, SLUBBING OR LIKE MACHINE Filed July 26, 1966 6 Sheets-Sheet 5 lnventor:

w. HEIMES 3,410,071 METHOD OF AND APPARATUS FOR THE OPERATION OF A MULTIPLE Nov. 12, 1968 TWIST, SPINNING, SLUBBING OR LIKE MACHINE 6 Sheets-Sheet 6 Filed July 26. 1966 In venlor:

United States Patent 3,410,071 METHOD OF AND APPARATUS FOR THE OPERA- TION OF A MULTIPLE TWIST, SPINNING, SLUB- BING OR LIKE MACHINE Willi Heimes, Krefeld, Germany, assignor to Palitex Project-Company G.m.b.H., Krefeld, Germany, a company of Germany Filed July 26, 1966, Ser. No. 567,984 Claims priority, applicatign Germany, Aug. 6, 1965, P 405 3 25 Claims. ci. s7-ss.49

ABSTRACT OF THE DISCLOSURE A method and apparatus for electrically operating elements, such as yarn brakes, yarn cutting devices, windolf accessories and feed mechanisms, mounted within or on a yarn package carrier comprises inductively transmitting the necessary AC electrical voltage across an air gap needed for ballooning yarn thereby permitting the external control of the above-mentioned elements. The primary of a transformer is mounted on a balloon limiter or on a separator and opposite this primary, in the yarn package carrier, a corresponding secondary of the transformer is installed with the primary and secondary components of the transformer being in reciprocal relation with one another across the air gap for the ballooning yarn.

The present invention relates to a method of and apparatus for the operation of a multiple twist, spinning, slubbing or like machine.

It is known, for example in multiple (such as two-forone) twist spindles, to incorporate yarn brakes, twistflyer brakes or the like. These important functional means for the running of the yarn are, during the twist ing process, in practice unable to be influenced from externally of the yarn as it normally forms a balloon in this type of apparatus or at least it is difficult so to influence the said means. This is disadvantageous and it is desirable to make it possible so to influence such functional means which are generally provided inside a stationary package carrier mounted on the spindle, without the necessity for complicated arrangements.

This problem is solved according to the invention by means of a method which comprises influencing the controllable functional elements electrically and transmitting inductively across an air gap for the ballooning yarn. This is done by means of an AC voltage and preferably with more than 50 c./s., even though frequencies up to or above 20 kc./s. can be used. The alternating current may have a sinusoidal curve or consist of individual pulses which can have for example sawtoothor square form.

The method according to the invention provides on the one hand a central setting of the controllable functional elements from one place and on the other hand it is possible to act on the particular control elements individually. Whereas in known arrangements brakes for example must be set laboriously at each spindle e.g. brakes for the twist-flyer and for the yarn, it is now possible to bring this about in a simple way by varying the voltage centrally and it is also possible, in certain cases, to act individually on each spindle. Obviously group actuations are also possible.

The same is likewise valid for example for multiple spinning or slubbing machines in relation to drive and control of a stretching mechanism, and the term yarn as used herein is intended to include, where the context permits, a roving, slubbing or other filamentary or stranded material.

For carrying out the method there may be provided ap paratus in which, on the machine frame, for example 3,410,071 Patented Nov. 12, 1968 on a balloon limiter or on the separator, at a suitable height, the primary of a transformer is provided. The primary consists of at least one winding on an iron core. Opposite to this primary there is provided in the yarn package carrier the correspondingly installed secondary of the transformer. The two parts are in respective relation over the air gap necessary for the transit of the yarn. In a general way one such transformer is provided; in certain circumstances it is also possible to arrange several such transformers on the periphery which are then connected in each case to a controllable functional element. It may be expedient to connect a rectifier between the functional elements and the secondary of the transformer, in order that DC motors or even DC-supplied magnets can be attached.

The terminals of the secondary of the transformer can be applied to an electromagnetically excited yarn brake; they can also be applied to an electromagnetic brake for a rotating draw-off accessory, for example a twist-flyer, and in these instances it is also possible to work with a rectified voltage. A yarn cut-ofl device can also be operated. Such a severing arrangement can advantageously be put under the influence of a yarn controller or of a bobbin thickness measurer. Moreover operation from a central point or by hand at each spindle is possible.

The invention also makes it possible to provide, inside the yarn supply package carrier, a yarn feed or drawing mechanism. By means of the feed mechanism it is possible to apply positive traction to the yarn in the input tube and thus to exclude variations in tension of the yarn, which result from withdrawal from the supply package and effect a rotation stop.

The drawing mechanism is conveniently used in connection with a multiple spinning spindle.

In both cases, by the use of rectifiers, DC motors can also be provided.

By means of the drawings the invention is subsequently explained in greater detail and at the same time further features of the invention are indicated.

The drawings represent throughout vertical sections through double twist-spindles or double spinning spindles or parts of such spindles.

In the drawings the same parts are griven the same reference marks.

In the individual figures there is on the wharve 1 the spindle rotor 2 with the storage disc 3. The trunnion 5 of the package carrier 4 fits into a double bearing 6. The package carrier 4 is formed in a known way so that it can accept the sleeve 7 of the supply package 8. There is further provided in a known way a centrally arranged inlet tube 9 for the yarn 11 or a slubbing 42 and a limiter 10 for the ballooning yarn. Instead of a balloon limiter 10 a separator (not shown) can also be provided.

For carrying out the process according to the invention there is provided, on the balloon limiter 10, the primary 12 of a transformer. It consists of the coil 13 which is found on an M-section iron core 14. The secondary of the transformer provided in the static supply package carrier 4 consists of the coil 15 and the core 16. These two transformer components are in reciprocal relation with one another across the air gap 17 for the ballooning yarn. The air gap 17 serves to give free passage to the yarn 11 for balloon formation. If instead of balloon'limiters 10 only separators are used the primaries of the transformers can be installed therein.

It is in itself known to provide yarn brakes within the range of the central input tube 9. Such yarn brakes can take for example the form of a cartridge brake which has a brake cartridge which lies between two brake rings.

0 The yarn must runthrough between these two rings and the cartridge and is thereby correspondingly braked. Such a brake can only be regulated by alteration of the spring is possible from the transformer.

As maybe seen from FIGURE 1 the yarn brake con- 'sists 6r 'the ring body; 18 "the position of which is fixed immove'ably and the axially moveable ring ibody I9 ."The

brake cartridge 20 is located between. the two ring bodies The lower "ring body 19 is provided with atube i l oad of the cartridge. According to the invention, by

suitable formation of the brake, direct influencing thereof extension 21 which projects into the coil 22 and provides 1'.

passage for the yarn 11- and consists of a ferromagnetic material. The'ring' body 19 is moreover under the influeri'ce'of the spring "23. Manifestly by electrically ener- "gizin'g'the coil 22 the ring 19 can be'moved against the pressure of the spring 23. When this'happens the'b'ra'king forcewhich is exerted at the'rings 18 and 1 9 by the ca'rtrid'ge20 can be altered. The coil 22 is cbnnected via the leads 24 with the secondary of the transformer,

i In FIGURE 2 the'brake itself'jis shown. The'br'a'ke ring 19 is however in this case not underthe influence 4 'Off a press'ure spring but is provided with a permanent magnet ring2 which is axially magnetized. According to the strength of the like pole excitation ofthe coil 22 the ring 19 is pressed more orless strongly against the cartridge and thus varies the braking effect. In this case i citation coil 26, which displaces the yarn clamping shoe 27 which is made of permanent magnet material and is rhoveable at right angles to the course of the yarn 11. The yarn clamping shoe is axially magnetized and its surface is provided with a wear-resistant coating 28. The yarn '11 is braked between this clamping shoe and a corresponding extrusion 29 in the yarn passage.

In FIGURE 4 the arrangement of the cartridge brake is carried out in such a way that the upper brake ring 18 is moveable against the pressure of a spring 23. The lower brake ring 19 is likewise axially moveable and bears against a cam-disc 201 which can be actuated by a step-by-step motor 202.,The curve of the cam is closed so that the height of the brake ring 19 can be altered at will by movement in either direction. The step-by-step motor 202 receives only switching pulses which are supplied through the transformer. This has the advantage that a continuous consumption of current is avoided. Instead of a step-by-step motor a step-by-step switching device or a step-by-step switching relay can be used. 2 v

As can be seen from FIGURE 3, a yarn cutting device can be provided. It consists of an electromagnet 30 which is arranged in the'wall of the package carrier 4 and which'is fed through a rectifier (not shown) from the transformer. In the balloon limiter 10 a bolt 31 is fitted. This bolt 31 consists conveniently of permanent magnet material and is so magnetized that it can be moved against spring pressure under the influence of the electro; magnet provided on the packagecarrier. The coil,of the. electromagnet 30 can here be put under the influence of a tell-tale such that the magnet reacts as soon as the yarn breaks. It can also be under the influence of a bobbin caliper and bring about the yarn severing whena predetermined bobbin diameter is reached. The length of the bolt 31 is so chosen that it can completelyclose the gap 17 and thus sever the filament 11 with certainty, v

In FIGURE 5, as a wind-off accessory a twist-flyer 32 is shown. This twist-flyer 32 is fitted to a boss 35 mounted rotatably on the yarn input tube 9. The lower surface of the boss is provided With a braking-surface 36 made of. permanent magnet material, on which acts the electromagnet 37 which is energized through the leads 24 and fromthe rectifier from the transformer. According to the strength of actuation of the electromagnet 37 the twist-.

.fiyer 32 is attracted. more or .less strongly overits braking surface 36 and braked. By reversing the polarity of magnet 37 the twist-flyer 32 can be held in suspension and easier running is thus obtained.

In FIGURE 6 an embodiment is represented in which in.;the;1jeg io n (Illsthe yarn: input tube 9' a feed mechanism is provided. This. feed mechanism consists of the electromotor 38 with the gear 39 which drives a pair of rollers which-serves for positively "dra win'g the-yarn into the spindl'eilrl' this way tension fluctuations, Whichcan give unequal withdrawal of the yarmfro'rn the bobbin 8, are evenedou t. consequence of the uniform withdrawal and of the -uniform subsequent supply the balloon later formed is exceptionally smooth-The current for the motor 38 is supplied through the leads 24 and rectifier 240 from the transformer 12/16.

In theeinbo'diment'taccording'to FIGURE7 5 cake 41 isworked p idle-double spinning arrangement (slubbing or, stretching mechanism). The form' corresponds, inessentials, .to the already described double twist spindles. The slubbing 42 is ,rn'erely withdrawn from the insidevof the cake and in the region of the tube 9 there is a stretching mechanism which comprises two motors 38 with gears 39 which drive the two roller pairs 40 and 40. The rollers of these roller pairs are pressed elastically against one another so that they can adjust the inequalities of the slubbing strand. The roller pair 40 conveniently runs at a greater speed than the roller pair 40 in order in this way to produce the stretching effect in the slubbing. The motors are supplied through leads 24 and from the rectifier 240 of the transformer.

It is possible throughout to combine together the individual embodiments which are represented in the figures, i.e., thus to construct a device which contains for example both a yarn brake and also a brake for the run-01f accessory. In this case it is necessary to work with two transmitting transformers. Obviously the same is valid also for other combinations.

What is claimed is: u 1. Multiple twist spindle apparatus and the like comprising: I

a carrier for a supply package, balloon limiting means, and an air gap formed between said'supply package carrier and said balloon limiting means;

means electrically responsive and located'so as to be within a balloon passing throughsaid air gap when said apparatus is in operation; and

means for inductively transmitting electrical voltage across said air gap to said electrically responsive means. l

2. The apparatus according to claim 1 wherein; said balloon limiting means is a separator member. 3. The apparatus according to claim 1 wherein: said balloon limiting means is a can.

4. The apparatus according to claim 1 wherein: said electrically responsive'means comprises an electromagnetically energizable yarn brake.

5. The apparatus according to claim l whereinz said electricallyresponsive means comprises a pulse-controlled step-by-step motor means and wherein said apparatus includes a yarn brake having a braking ring movable against spring pressure by said electrically responsive means.

6. The apparatus according to claim 1 wherein: said electrically responsive means comprises a step-by-step switching means and wherein said apparatus includes a yarn brake'having a braking ring movable against spring 9. The apparatus according to claim 8 wherein: said Wind-off accessory is a twist flyer.

10. The apparatus according to claim 1 wherein: said electrically responsive means comprises an electromagnetic yarn severing means.

11. The apparatus according to claim 1 wherein: said apparatus further comprises a yarn input tube, yarn feeding means accommodated in said tube, and wherein said electrically responsive means comprises at least one electromotor for operating said yarn feeding means.

12. The apparatus according to claim 1 wherein: said apparatus further comprises a yarn input tube, yarn stretching means accommodated in said tube, and wherein said electrically responsive means comprises at least one electromotor for operating said yarn stretching means.

13. The apparatus according to claim 1 wherein: said means for inductively transmitting electrical voltage across said air gap is a transformer, said transformer comprising on one side of the said gap a primary comprising at least one winding and an iron core to which said winding is applied and opposed thereto on the other side of said gap on the package carrier the co-operating corresponding secondary the terminals of which are connected to the said electrically responsive means.

14. The apparatus according to claim 13 wherein: the said primary of said transformer is located on said balloon limiting means.

15. The apparatus according to claim 13 wherein: the terminals of said secondary are connected to the electrically responsive means by means of a rectifier.

16. The apparatus according to claim 13 wherein: said electrically responsive means comprises a pulse-controlled step-by-step motor means and wherein said apparatus includes a yarn brake having a braking ring movable against spring pressure by said electrically responsive means.

17. The apparatus according to claim 13 wherein: said electrically responsive means comprises a step-by-step switching means and wherein said apparatus includes yarn brake having a braking ring movable against spring pressure by said electrically responsive means.

18. The apparatus according to claim 13 wherein: said electrically responsive means comprises a step-by-step switching relay means and wherein said apparatus includes a yarn brake having a braking ring movable against spring pressure by said electrically responsive means.

19. The apparatus according to claim 13 wherein: said electrically responsive means comprises an electromagnetic brake for a rotating wind-off accessory.

20. The apparatus according to claim 19 wherein: said wind-off accessory is a twist-fiyer.

21. The apparatus according to claim 13 wherein: said apparatus further comprises a yarn input tube, yarn feeding means accommodated in said tube, and wherein said electrically responsive means comprises at least one electromotor for operating said yarn feeding means.

22. The apparatus according to claim 13 wherein: said apparatus further comprises a yarn input tube, yarn stretching means accommodated in said tube, and wherein said electrically responsive means comprises at least one electromotor for operating said yarn stretching means.

23. A method for controlling elements in a multiple twist spindle apparatus and the like comprising:

establishing an air gap between a package and balloon limiting means, ballooning yarn through said air gap and inductively transmitting electrical voltage across said air gap to electrically responsive control means located within said balloon.

24. The method according to claim 23 wherein: an alternating current exceeding c./s. and having a sinusoidal wave form is used.

25. The method according to claim 23 wherein: an alternating current exceeding 50 c./s. and having a pulseshaped wave form is used.

References Cited UNITED STATES PATENTS 2,667,029 l/l954 Uhlig 57-58.86 2,736,161 2/1956 Nystrom 57-5876 2,785,526 3/1957 Keith 5758.76 XR FOREIGN PATENTS 958,325 3/1950 France. 999,420 1/1952 France. 563,746 10/1932 Germany.

FRANK J. COHEN, Primary Examiner.

WERNER H. SCHROEDER, Assistant Examiner.

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