DE2009095B2 - DEVICE FOR REMOVING A BROKEN THREAD END FROM SPOOLS ON SPINNING AND TWISTING MACHINES - Google Patents

Description

The invention relates to a device for removing a broken thread end from Bobbins on spinning and winding machines and fermentation of the same on a suction air gripper, which after receipt a control signal supplied by a Fademvä <_nter is adjustable on the axis of the delivery spool.

From the Austrian patent 236 260 such a device is known, which is a Includes suction pipe connected to the suction pump, which is displaceable transversely to the spinning machine and with his mouthpiece, which can be provided with brushes to find the end of the thread, with the last upper yarn layers of the delivery bobbin can be brought into contact. In such a device has but that it was found to be disadvantageous for the removal of the broken thread end from his The brushes used in the delivery spool destroy the upper winding layers of the delivery spool and thus the removal process make it difficult or even impracticable.

In another, by the patent specification 49 206 of the Office for Invention and Patents in so East Berlin known device for the automatic repair of thread breaks on machines with several In a row arranged winding units the suction tube is in the axis of the delivery bobbin on and off moves, i.e. put it over the delivery spool, in order to control the flow speed of the suction air to enlarge and to favor the formation of aerial vortices, so as to reduce the broken To facilitate the end of the thread. So the provision of a vacuum gripper alone will not be sufficient viewed to remove a broken thread end from its delivery spool and the suction air gripper to hand over, which then feeds the thread end taken over from him to other functional groups of the machine in the case of ring spinning machines.

Even with the automatic tying device broken threads in spinning machines according to patent specification 58 447 of the Office for Inventions and patent system in East Berlin, not only one "Sausluftsreifer" is used, but an additional one Belt "of the frictional connection with the delivery spool rotating in the opposite direction to the normal direction of rotation is brought, whereby the removal of the broken thread end is to be facilitated. Here, too, there is the disadvantage that the outer winding layers of the delivery spool will dissolve and thus that the aforementioned difficulty in removing the thread end.

The invention is based on the object of providing an anas to improve said device so that when removing a broken thread end the outer windings of the delivery spool are not destroyed.

According to the invention, the solution to the problem is that on the axis of the normal direction of rotation further rotating coil together with dom SauelufWeifer also one against its inflow .-> ffnuna aligned, one over the coil surface from the bottom upward stroking pressure air sirom generating Dnickluftdüse is adjustable with at least one outflow opening.

The invention achieves technical progress that with simple means that can easily be retrofitted in existing spinning and winding machines, since JL ^ e have a suction air sink and a compressed air vent ', .c , a broken one can be removed Facienendes is ensured with gentle treatment of the coils.

It is useful for reels on the spindles of which a paddle wheel is arranged below the reels. that the compressed air nozzle has a first outflow opening oriented tangentially towards the impeller and has a plurality of second outflow openings which point at a point along the coil axis Angles are aligned against this.

Further features and advantages of the invention will become apparent from the following description in conjunction recognizable with the drawing. It shows

Fic. 1 in front view, partly in section and partially omitting individual components, a device according to the invention / to combine yarns according to a first embodiment.

F i g. 2. 3. 4 and 5 Schematic representations to illustrate the mode of operation of the device according to Fig. 1.

6 to 11 are schematic representations for the further Illustration of the mode of operation of the device according to Fig. 1,

Fig. 12 in a front view and schematic representation of the device according to the invention in a third Embodiment and

FIG. 13 shows a section along the line XXII-XXII in FIG. 12.

The device shown in Fig. 1 according to the invention to connect yarns, it is preferably installed in ring spinning machines. In this Fig. 1 denotes I a carriage which is parallel to a spindle row 2 of a ring spinning machine is movable back and forth along this. This sleigh 1 contains the various components that allow yarns to be joined, namely a structural unit for unwinding the free end of a broken yarn from its bobbin 3, a unit for gripping the unwound yarn

009

end. a structural unit for arranging a rotor 10 in a predetermined position on a Ring 9. a device for threading the unwound end of yarn into this traveler 10. a structural unit to connect the free end of the yarn with a fleece Π- that from the thread take-up device of Ring spinning machine is delivered, via a pneumatic cleaner 8. a scanning device for a broken game, etc .. so that when the last-mentioned scanner indicates. that on one of the bobbins, such as the bobbin 3, the yarn has broken. the slide 1 \ or this coil 3 is stopped, then the servant Spool of broken yarn to connect with its free end to the fleece 11, which is from the Fadeneinzuüseinrichtung is delivered. The following are now the individual structural units, the above mentioned are explained in more detail.

1. execution for the unwinding of the free end ^at a; IUF a coil broken yarn

The execution consists of a Mebeplatte 13. which is mounted on the ring rail 4 of the spinning machine. so that their movement on this plate 13 a; is transmitted. The lifting plate 13 hold on their underside a rod 14 which is connected to the piston of a compressed air cylinder, not shown. A nozzle 15 is attached to this rod 14 in such a way that its opening 16 is directed towards a frame of the coil 3. A flexible hose 19 is connected to the nozzle 15 and connects to a compressed air source (not shown). 20 denotes a flexible hose which establishes a connection between a suction device, also not shown, and the suction pipe 17, the mouth of which is denoted by 18. A lever 21 is pivotably mounted at 22, and this lever 21 carries at its / its end the suction pipe 17, which interacts with a curve piece 23 via a roller 24. when the lever 21 can be pivoted by means of the cam ^{piece which is attached to an * n} * ™ j "* 36. namely via cn, ama-tro of lever 34.

3. Device for threading
runner

r-, m- < into one

The guide rod in FIG. 1 denotes 38 cn, funrun _t > s "r

through the lifting plate 13 h «ndure ', going on ^. upper removing first H Un 3 uiu1 an n ^ Z ^

^{hook 40} 7 ' ^1St - ^ Ji _P ndf end of from the "coil 3 sits around the running end, ds χ on ν

d HU 3V h

atauspu tf ™ ^ ™ \ to the
ten. On the Colonel Jer
a leadership position 4
The task is always random
held yarn to the L
if ^

pivotable, the

on his

p 3V h

= ₃₉

ⁿ _ie " _e _

Push lever 44

free end a ^ ^ ^^ ^ _β ^^ _up _ _{unJ down} _

_schuin , _cn J _rma c. Ai a FmIe de * Füh-

rungshebels «, £« «^ TEnAfcin'm" ^ "- cgt. . ^ ™ ^ ™ * ™ ^ set levers xer- «μι. η the Zuehnu. ^ n ., m ^. ^

Round is. wdd ^ r s. n. j «s ^

Kur ^ nstuck 47 C _{1 r} ^ x _mr . _{kh be} , _to “ _c .

t'de u end with a third is its other ind. J _n ' _{,, ^ 1 darac} stellicn lever "™ m Surch em curve _{piece c]] c 36 is} actuated. On a cl _{sc ,; rotatably} mounted

- .st _m ^

" _{ift he} in turn

V _dargeslc lhen lever Ursem VICS: s, ^ actuated on the presence _Kune nstück 56 _7ichhakens 40 is connected to the ^ f ^ f. When the ^drive- V erscl 2 ^lLb ^ ^lab , ⁵ ^ _d ² ^ _{n is by} the rotating

VersLhiebe.tab

a fourth
emem md
J ^ bund.n is
U. 36

put them in a position in which they are above the spindle 2 is located.

2. Device for correcting the position of a rotor

Bank 10 along the ring 9 is made to run by a stream of air repelled via this nozzle even if it is wrong. Case of a Garnbruches stopped se, st, while m an undefined position on the Ring9 Hegen wurde_ on the elevating plate 13 is further -n stopper 30 comparable * »slidably arranged such that it, the movement generated by d, n airflow of Laufers 10 stops. With one end of the stopper 30.st a pivoted pivot lever is connected to which one end of a first inner wire 33 6 _S ^^^^^^ r ^ mcfn Druck.uftzs Un-

_{connected so that} ks> nn can be assumed for this. that he would get an up and _{down movement t} .

4. Device to connect the broken end

of a yarn with a ^{ν! ι} ^>"ird is delivered to the collection device

In F. g.

ande.en

for a first execution ^ ^r _{ swivel lever, which is ii. GO denotes a

“, ^ Η end a dem. Ver, _{and mu wl} .

_the pivot lever 58 mon _{one end of the} s

Operating rod 63,

bound. When turning the fifth cam piece 64 a pivoting movement is given to the pivot lever 58, as a result of which the roller 61 is then brought into contact with the lower roller 6 of the Fadcneinzugscinrichtung the ring spinning machine.

5. Execution to slow the rotation of a spindle

In Fig. 1 designates 76 a braking member which is provided with a U-shaped recess at its free end, which can be brought into operative connection with the bottom part 2 α of the spindle 2. This brake member 76 is slidably mounted in a frame of the carriage 1 so that it can be moved back and forth, depending on the reciprocating movement of the piston of a compressed air cylinder not shown in the drawing.

The above-described first embodiment of the device according to the invention now works as follows:

1. The carriage 1 is stopped in front of the bobbin 3 after a corresponding display by the scanning device, not shown in the drawing, in which a yarn breakage is present. Next, the pivot lever 21 is then caused to pivot against the force of the springs 27 and 28 by rotating the cam piece 25, with the result that the suction pipe 17 ° ^{v is} displaced forward so that its opening 18 is brought into a position above the spindle 2. The front end of the suction pipe 17 is moved by means of the scanning roller 24 along the inclined surface of the curved piece 23. ^M The suction pipe 17 is then placed under suction by actuating the suction device connected to this pipe. On the other hand, the nozzle IS is displaced forwards, specifically by the push rod 14, which is actuated by means of a compressed air cylinder (not shown).

2. When the ring rail 4 comes to its uppermost position and then begins to move downwards again, the compressed air source to which the nozzle 15 is connected is opened, so that a compressed air stream flows out of it, which flows against the frame of the coil 3 is directed, while the ring rail 4 moves downwards. By this nozzle-like compressed air flow, the free end 3 α of the broken yarn is lifted from the surface of the bobbin 3 and then carried upwards by an air stream that flows between the opening 16 of the nozzle 15 and the Offmmg 18 of the suction tube 17 acts As the spindle 2 remains rotating, the centrifugal force prevailing here accelerates this separation of the free end of the thread from the bobbin, so that this end of the thread is sucked into the suction tube 17 very quickly. While this is happening, the braking member 76 is advanced against the spindle 2 by means of a cylinder, not shown, so that the spindle is braked, which happens at the same time as the compressed air flow from the nozzle is switched off (FIGS. 1 and 4).

3. Then the suction tube 17 is then withdrawn into its starting position, including the Nozzle 15 is returned to its starting days, as shown in FIG. 1 and 5 show.

4. Once this has happened, the stopper 30 is moved forward by means of the lever 34, the inner wire 33 and the lever 31 in dependence on the rotation of the first cam piece 35, so that the free end of the Stopper 30 comes into contact with ring 9. Once this has happened, the Nozzle 29 ejected a stream of air. By this compressed air flow, the rotor 10, which has been stopped at the time of the yarn breakage. moved over the ring so that it is in a position is brought, which is defined by the position of the stopper 30. Once this has happened, the compressed air flow of the nozzle 29 stopped (Fig. 1. 6 A and 6 B).

5. The stopper 30 is then moved back into its starting position, and then it becomes the Guide rod 38 raised, which has the consequence. that the free end of the yarn passing through the suction tube 17 is held, is now brought into contact with the guide 41 of the Pulling hook 40 in order to continue to bring the yarn into operative connection with the hook 39 (see Figs. 1,7A and 7B).

6. Then the guide rod is activated by actuating the associated pneumatic cylinder 38 shifted downwards, the thread being held by the hook 39 (see FIGS. 1, 8A and 8B).

7. By actuating the second inner wire 46, the guide lever 42 is pivoted clockwise so that the unwound yarn 36 is hooked to the free end 42 α of this guide lever 42 and can be brought to the stop position of the rotor 10 in this way. It should be noted here that the unwound yarn 36 is still held in operative connection with the first hook 39 of the pulling hook 40 (see FIG. 1, 9 A and 9 B).

8. Subsequently, the push lever 44 is then moved by the movements of the pivot lever 48 moved forward, the pivoting of this lever 48 by the third Ini.jndraht 40 is controlled as a function of the rotation of the third cam piece 51 of the drive shaft 36 (see Figs. I, 10A and 10B).

9. Then the guide lever 42 and the push lever 44 are then in their starting days brought back

10. Controlled by the rotation of the fifth Karvenstückes 64, the connecting roue 61 is displaced by means of the rod 63, the rod 62 and the pivot lever 58 in the direction of the lower roller 6 of the thread take-up device, whereby an upper part of the unwound game 3 b against this roller 6 is pressed. The unwound yarn 3 b is inserted during this movement of the roller 61 into the safety wire 12 of the spinning unit, which includes the bobbin 3 on which the yarn is broken Movement of the swivel

hebeis 54. which carries the roller 61. This movement is controlled by the fourth inner wire 55 via the pivoting lever 53 and the forward movement of the push rod 52. The pivoting movement of the pulling hook 40 releases the thread hooked on it from the hook, and once this has happened, the brake on the spindle 2 is released in that the braking member 76 is displaced backwards by means of the associated compressed air cylinder (see FIGS. 1, 11 A and 11 B). In the so-controlled movements of the unwound yarn 3 is b by the roller 61 and by the engagement point of the lower rollers 6 and the upper roller of the yarn feeding device given a twist 7, which causes the free end of the unwound yarn 3 b with the nonwoven 11 is twisted while it is simultaneously introduced into the pneumatic cleaner 8, so that the connecting of the yarns thus takes place. When the roller 61 serving for connection is shifted towards the lower roller 6, the unwound yarn 3 b is introduced into a V-shaped guide which is provided in the roller 61.
When the combining of the yarns has been carried out as described above, the table slide 1 is moved along the rail S into the position shown in FIG. 1, in which it then remains until the scanning device indicates a next yarn break, whereupon the carriage is again set in motion and brought to the bobbin for which a yarn break was displayed. The processes described above are then repeated.

Although it was stated in the context of the above description that the push rod 14, the guide rod 38 and the brake member 76 by means of compressed air cylinders, not shown in the drawing are moved, it is readily apparent that other devices for moving these components May be useful, such as a rack and pinion drive or a link mechanism etc. However, the use of air cylinders is therefore considered to be most advantageous, because a source of compressed air has to be provided for the nozzles IS and 29 anyway. to which then these cylinders can also be connected.

From the description above of the first Embodiments of the device according to the invention for connecting yarns are straightforward the following procedural steps can be derived. First of all, from the bobbin on which a thread failure has occurred is, the yarn is unwound over its free end, this free end of the yarn from the bobbin by means of a stream of compressed air is lifted, which is ejected from a nozzle, supported by the Centrifugal force, which is caused by the high-speed rotation of the spindle that holds the spool wearing. The separated yarn is then brought into an air stream between the aforementioned Nozzle and a suction nozzle is formed above the spindle, so that the unwound Yarn is held in the upward direction by this air flow. This enables threading of the unwound yarn into a runner in a very simple way. Simultaneously with the subsequent Joining causes a cut off of the excess length of yarn, which simultaneity the process of union is considerably accelerated and the cause is also constructive for one simple embodiment of the execution. In contrast, it is used for such a coil machine !! the method according to the invention and the method according to the invention Device brought into use, then these disadvantages can be avoided. It is in in this context, reference is made to Figs. 12 and 13, which show a further embodiment of the invention, which is preferably used for such coil machines Can be used. In these figures, 91 denotes a spindle, which is a spool 92 carries, while 93 denotes a nozzle which is provided with a plurality of openings 94, which for Surface of the coil 92 open out, the openings from the coil surface a small Keep your distance. Another opening 95 opens towards the lower end of the spindle, which is connected to a Flugiao wheel 96 is provided so that the compressed air flow acting on this impeller the Spi.idel to their Longitudinal axis rotates. A suction tube 97 is arranged above the spindle 91, around the unwound from the spool Sucking in the end of the yarn. The nozzle 93

is connected to a compressed air source not shown in the drawing. If an electrical device, also not shown in the drawing, has supplied the signal for unwinding the end of the yarn \ <n of the bobbin 92, then this signal triggers the pressing of a compressed air flow into the nozzle 93, and this compressed air flow is then divided into partial flows which are intended for the Flow out partly via the mouth 95 and partly via the mouths 94. This then gets the spindle together with

the bobbin is made to rotate and at the same time the end of the yarn is lifted from the bobbin surface and steered upwards so that it comes into the intake area of the suction pipe 97. Let it be in this context in particular pointed out that the

Outflow openings 94 are directed obliquely upwards, so that the compressed air flow over the surface the bobbin from bottom to top. It should also be noted in this context that by the utilization of the same compressed air flow which is directed against the coil surface. for rotation the spindle and thus the rotation of the spool for the latter the most expedient speed with regard to it is found automatically, the end of the twine is definitely in the intake area of the suction tube 97

and has already been partially drawn into this, then the compressed air source of the nozzle 93 switched off, the Sangzug applied to the Sangrohr 97 but is maintained until the rotation of the spool 92 is completely stopped, namely by means of a braking device not shown in the drawing. Although the spindle 91 be rotated for this unwinding process in one as well as in the other direction of rotation can, should preferably be provided, the spin

del to rotate opposite to the direction in which the winding was made. For this embodiment the advantage over the previously known designs can thus be easily recognized that there is no destruction of the outer wik-

kellagen comes and that the unwinding itself then can be made if the bobbin has a Foimgebüne that deviates from the normal case has or its volume is small

For this purpose 3 sheets of drawings

309526/403

Claims (2)

Patent claims: 1. Device for removing a broken thread end * from bobbins on .spinning and Twisting machines and transferring the same to a suction air gripper, which after receiving a The control signal supplied by a thread monitor can be adjusted to the axis of the delivery bobbin is. characterized in that on the axis of the spool (3. 92), which continues to rotate in the normal direction of rotation, together with the suction air gripper (17, 18, 97) also has one aligned against its inflow opening, one above Compressed air jet generating a compressed air stream sweeping the coil surface from bottom to top (15, 16, 93, 94) is adjustable with at least one outflow opening. 2. Apparatus according to claim 1 for coils on the .; Spindles a paddle wheel is arranged below the bobbins. characterized "·. · !. that the compressed air nozzle (93) has a first, against the paddle wheel (96) tangentially excluding ;. ■ .iitete outflow opening (95) by ¹ a Vielza ,,, \ having gekennzeich on the second outflow openings (94) which are aligned along the coil axis at an acute angle cegen this.