WO2008098695A1 - Ring spinning machine comprising a creel - Google Patents

Abstract

The aim of the invention is to dispense with roving feed hooks that can be exchanged on suspended carriage trains introduced into a creel (1) of a ring spinning machine. As a result, roving unwinding guides (13) are fixed to the creel. The roving unwinding guides (13) respectively guide two roves (14) unwound from the roving bobbin (7). In order to prevent the two roves that are guided through said type of double rove unwinding guide from being mutually impeded, the roving unwinding guides (13) are provided with two roving feed hooks (27) that are mutually offset about small distances (28, 29) on two planes (25, 26). The roving unwinding guides (13) are arranged between the two outer tracks (9, 10) and between the two inner tracks (11, 12) of the roving bobbins on a creel (1) comprising four rows (9, 10, 11, 12) of roving bobbins (7).

Description

 Ring spinning machine with gate

State of the art

From EP O 287 788 Bl a gate for ring spinning machines is known, which has a plurality of webs for extending and retracting suspension trolley trains with roving. In this case, a train is more provided than the number of webs, from the roving bobbins from and run to the drafting system. When the roving bobbins of one of the webs have run empty or will soon run empty, the flow of rovings is transferred to the full roving bobbins of one of the other webs. The tracks are thus used circumferentially as runways. A suspension trolley train, the roving bobbins of which have run empty, is extended and replaced by a suspension trolley train with full roving bobbins.

The roving bobbin holders of the suspended trolley trains are equipped with roving guides for the roving, which are arranged on the suspension trolley and are moved therewith. As in a spinning plant much more than the respective located in a gate suspension trolley trains are available, a variety of process leaders is required.

From DE 297 12 880 Ul it is known to assign to hanging trolley trains in a gate of a ring spinning machine retractable Vorganspulen in the gate stationarily arranged roving sequence guide. At this roving guide guides guide webs are arranged to prevent falling of broken rovings in the drafting system. The run on the run rods rovings are - not kept apart even by the guide webs - and can interfere with each other in the process.

In DE 690 26 050 T2 a gate design is disclosed in which provided between the retractable in the gate roving Vorgarnreihen, which are alternatively arranged on the suspension trolley trains and protrude from above between the rows of coils or protrude to stationary support arms from below between the coil rows , These Vorgarnführer have two guide hooks with very short arms, from which the rovings thread out very easily. Above all, however, these roving guides do not allow the rovings to be interchanged during the course of different, individually exchangeable roving rows.

General description of the invention

The object of the invention has been found to reduce the variety of roving sequence guides on gate with roving bobbins supplying dumbbell. A solution had to be found, through which rovings guided by the stationary drainage guides neither interfere with each other nor are obstructed by the roving bobbins in other suspension trolleys. The roving sequence guides had to be designed so that they could run outgoing roving to any of up to four spinning stations.

It achieves this object by the features mentioned in the independent claim.

Specific description of the invention

In the figures of the drawing an embodiment of the invention is shown.

Show in it

Figure 1 shows the front view of one side of a gate with the run of the rovings to drafting.

Fig. 2 is a plan view of a longitudinal portion of a gate;

3 to 5 a roving sequence guide in three views;

6 shows a roving sequence guide in a perspective view;

7 shows the front view of one side of a gate with three rotating roving rows of rovings.

In Figure 1, the left half of a gate 1 of a ring spinning machine is shown. The gate has on the other side of the dot-dashed center line 2, not shown, a mirror-image right half. In this gate 3 four rails 4 are arranged on carriers, which extend over the entire length of the gate and in which by means of rollers 5 hangers 6 for roving bobbins 7 are displaced. The hangers are connected by longitudinal struts 8 to suspension trolleys and jointly displaced. The hanging trolley trains four rows 9, 10, 11 and 12 are formed by roving.

Between the two outer rows 9 and 10 and the two inner rows 11 and 12 of roving bobbins 7 roving discharge guide 13 are attached to the carriers 3, which serve to guide the running of the roving bobbins 7 rovings 14. Below this roving sequence guide are on transverse struts 15 along the gate extending guide rods 16, 16 'for guiding the rovings 14 of the roving runners 13 between the outer Vorgarnspulenreihen 9, 10 are arranged. From these guide rods and from the roving guide guides 13 between the inner rows of roving bobbins 11, 12, the rovings run over a further drainage rod 17 to inlet funnels 18 from below the gate 1 arranged drafting systems 19th

Carrier 3 and cross struts 15 are attached to support rods 20 which are connected to the frame of the ring spinning machine, not shown.

As is apparent from Figures 1 and 2, run from each three of the four rows 9, 10, 11, 12 of roving bobbins 7 rovings 14 and to the drafting 19. The row 11 (in Figure 1) and the row 12 (FIG 2) serves as transport and reserve line in the illustrated expiration time. After the roving from the row 9 has run off, the run of roving is shifted from this row to the rows 11 and 12, respectively. Then the hanging trolley train of row 9 or extended and a new suspension trolley train with full roving bobbins retracted into this rail or row, it now serves as a reserve line. When the roving bobbins of another one of the rows have expired, the course of the roving is switched over to the respective reserve row. In this way, all rows are roughened in sequence. This principle of the sequence of roving bobbins is shown in the German Utility Model G 87 17 985 Ul in detail, to which reference is made. The mutually not obstructing guiding the rovings 14 between the roving bobbins 7 and the inlet funnels 18 to the drafting units 19 requires roving sequence guide 13 special embodiment. These are shown in more detail in Figures 3 to 6. Notwithstanding the illustration in Figure 1, the roving sequence guide of Figures 3 to 6 eyelets 21, by means of which they are fastened to correspondingly shaped straps 3.

In Figure 2, the guide rods 16 are not shown to the innermost, the rovings to the drafting devices dissipative drainage rod 17 for clarity.

Each of three of the four roving bobbins shown in dashed lines in FIG. 2 runs rovings to the three work stations 22, 23 and 24 of the drafting system 19. The roving sequence guides 13 assigned to the four roving bobbins lie advantageously in a plane 25 transverse to the gate, which is centered on the gate middle job 23 of the three jobs is arranged. The roving-Ablauffuhrer 13 are also in two extending in the longitudinal direction of the gate 1 levels 26 between the Vorgarnspulenreihen 9 and 10 or 11 and 12th

The roving sequence guide 13 have two upwardly open hooks 27 which are offset transversely and longitudinally to the planes 25 and 26: Figure 5.

With the offset of the hooks 27 of the roving discharge guide 13 by a distance 28 or 29 (FIGS. 3 and 4), it is achieved that two rovings 14, which are guided in each case in a roving drainage guide, do not obstruct or impair each other. As indicated in Figure 4, a roving 14 guided in an outer hook 22 'extends down to the guide bar 16. From the inside hook 22 ", a roving passes to the guide bar 16. The distance 29 is advantageously chosen to be parallel to one another Tangent to the attachment arms 30 of the hook 27 are at a distance corresponding to the thickness of the commonly processed rovings.

The rovings 14 can be easily inserted from the side of the shorter arm ago in a roving Abiaufruhrer 13. The arrangement of these roving sequence guide 13 in a plane 25 which lies between the roving bobbins and by the double offset of the hooks 27 by the distances 28 and 29 unimpeded flow of rovings from the two roving diagonally to each roving sequence guide Ensures bobbins: the roving of the roving bobbin 7i passes through the hook 27i, the roving of the roving bobbin 7 ₂ by the hook 27 _{2 of} the roving sequence leader 13 ₁ , the roving of the roving bobbin 7 ₃ passes through the hook 27 ₃ , the roving of the roving ₄ through the hook 27 _{4 of} the roving sequence guide 13 ₂

As can be seen from FIG. 7, in a gate 1 'with only three rows of roving bobbins 9, 10, 11, which are likewise processed in a rolling manner, roving discharge guides 13 of the type described above are arranged only between the two outer rows 9 and 10. Between the Vorgarnspulenreihen 10 and 11, a simple drainage rod 31 is arranged, from which a running roving runs to the inlet funnel 19 of a drafting system. The running conditions between the outer rows of roving bobbins 9 and 10 are as described above.

LIST OF REFERENCE NUMBERS

1 gate

2 center line

3 carriers

4 rails

5 rollers

6 hangers

7 roving bobbins

8 struts

9, 10, 11, 12 rows of roving bobbins

13 roving sequence guide

14 rovings

15 cross struts

16 guide rods

17 drainage rod

18 inlet funnel

19 drafting system

20 support bar

21 eyelets

22, 23, 24 workstations

25 transverse levels of roving drainage

26 Longitudinal plane of the roving sequence guide

27 hooks

28, 29 Offset distances of the roving hooks

30 mounting arms

31 drainage rod

Claims

claims 1. ring spinning machine with gate (1) and with drafting system (19), wherein the gate stationary cross member (3, 15), along which of the gate tracks (4) for extending and retracting suspension trolley trains (5, 6, 8) with roving bobbins (7) are fixed, and with fixedly attached to the cross beams roving runners (13, 16, 17), said first roving guide (13) at the top in the gate (1) lying cross members (3) between the webs (9/10, 11/12), on which the suspension trolley trains enter the gate, are arranged and on transverse beams (15) below the roving bobbins (7) second roving discharge guide in the form of guide rods (16, 17) are arranged, characterized characterized in that the first roving sequence guide (13) each have two Vorgarnführerhaken, each with two at least approximately perpendicularly extending Befestigungsamen (30) and guide arms (27) and abut the rovings (14) on the Befestigungsamen. 2. ring spinning machine according to claim 1, characterized in that the Vorgarnführerhaken are facing away from each other with its two openings. 3. ring spinning machine according to claim 1, characterized in that parallel, lying at a distance of the thickness of the rovings tangents to the inner surfaces of the fastening arms (30) of the Vorgarnführungshaken at four Vorgarnspulenreihen (9,10, 11, 12) on a machine side parallel to planes ( 25) lying transversely to the longitudinal axis of the gate (1) and passing through a workstation (23). 4. ring spinning machine according to claim 1, characterized in that parallel, lying at a distance of the thickness of the rovings tangents to the inner surfaces of the fastening arms (30) of the Vorgarnführungshaken at three Vorgarnspulenreihen (9,10, 11) on a machine side parallel to planes (25) lie, which are transverse to the longitudinal axis of the gate (1) and extend through a workstation (23) and between two adjacent spinning stations. 5. ring spinning machine according to claim 1, characterized in that each of the two outer Vorgarnspulenreihen (9, 10) is associated with a respective second roving sequence guide in the form of a guide rod (16 or 16 '). 6. Ring spinning machine according to one of the preceding claims, characterized in that the gate (1) with four tracks (9, 10, 11 12) for extending and retracting suspension trolley trains (5, 6, 8) _ausstattet and the first roving Leader guide (13) between the first and the second web (9, 10) and the third and fourth web (11, 12) are arranged. 7. ring spinning machine according to one of the preceding claims, characterized in that the gate (1) with three tracks (9, 10 and 11) for extending and retracting suspension trolley trains (5, 6, 8) is equipped and the first roving sequence guide (13) between the first and the second web (9, 10) are arranged from the outside. 8. roving sequence guide according to claim 1.