EP0287788B1 - Method and device for supplying a ring-spinning machine with feeding bobbins - Google Patents

Description

The invention relates to a method and a device for loading a ring spinning machine with supply bobbins, with at least two rows of bobbins that run along each of the machine sides and which supply rags at workplaces and a further bobbin row that can be retracted with empty bobbins and filled with full bobbins .

Such a method is already known as prior art, in which two rows of coils are arranged in one horizontal plane and a third row of coils in another horizontal plane lying above them (EP-A-0 124 662). The two rows of coils lying next to each other in the same horizontal plane serve to supply the ring spinning machine with fuses to the work stations, whereas the third row of coils is always equipped with new full supply coils, which are transferred to the two lower rows of coils if necessary. This known method and the device carrying out this method are correspondingly complicated and require a number of movement sequences in order to always have full supply spools available.

In contrast, the object of the present invention is to design a method and a device of the type mentioned at the outset in such a way that it is ensured without great design effort that the corresponding workstations of a ring spinning machine are always supplied with full supply spools.

This object is achieved in that when the bobbins of a running row of coils expire, the outgoing fuses are replaced by fuses of the further row of coils that are retracted with full bobbins, and this row of coils thus becomes a row of coils that are running out, while the expired row of coils as an additional row of coils with empty tubes - And is run in with full bobbins and that this changing process is repeated in turn between all rows of bobbins.

This results in the advantage that the individual rows of coils no longer have to be interchanged, but instead are stationary at the respective work station, so that complicated switching devices and correspondingly designed work elements are dispensed with.

In order to create optimal drainage options for the fuses, in a further embodiment of the invention the further coil row can be aligned as a running coil row by longitudinal displacement to the operated work stations. Furthermore, it is advantageous, in the interest of a continuous workflow, that the idling of the running coil rows takes place out of phase. This means that there are always differently filled rows of coils, which prevents undesired idling, interrupting the machine's workflow.

The device for carrying out the method can be designed such that all rows of coils can be moved in and out independently of one another and guide elements for the running fuses are arranged outside the movement paths of the rows of coils. In order to facilitate the functional arrangement of the fuses of the full supply spools, the guide elements can, for example, be designed like hooks and attached to telescopic hanging rods. This provides quick access to the guide elements placed on the fuse when it is placed correctly.

In a further embodiment of the invention there is also the possibility that the guide elements of the vertically movable group are arranged on swivel arms arranged in the lower region of a row of coils.

In order to be able to carry out the alignment of the coil row when it is set up as a running coil row by longitudinal displacement to the operated work stations, according to the invention each coil row can be connected to a control device for adjustment by a spindle pitch relative to the associated sliver guide funnels. This control device can be designed to be mechanically, electrically or pressurized with pressure medium.

As an alternative to three rows of coils, in a further embodiment of the invention there is also the possibility that, for example, four rows of coils are provided, wherein either the four rows of coils can be arranged next to one another or two rows of coils can be arranged one above the other.

If rows of coils are arranged in the gate at different heights, upward and / or downward slopes from the normal height of the feed and discharge rails to the rails arranged in other heights must be provided in the gate. If these incline and / or descent sections extend into the gate due to lack of space, the sections of the incline and / or descent sections located in the area of the gate are designed according to the invention as height-adjustable rail sections.

Fig. 1

eine schematische Seitenansicht dreier Spulenreihen oberhalb eines Streckwerks einer Ringspinnmaschine;

Fig. 2

eine andere Ausführungsmöglichkeit der Erfindung in Seitenansicht;

Fig. 3

eine weitere Ausführungsform der Erfindung mit höhenversetzten Vorlagespulen;

Fig. 4

eine schematisch Darstellung eines höhenbeweglichen Führungselementes in Seitenansicht;

Fig. 5

eine weitere Ausführungsmöglichkeit des Führungselementes in Seitenansicht;

Fig. 6 VII-XII

eine schematische Darstellung der Verstellmöglichkeit um eine Spindelteilung gegenüber den zugeordneten Luntenführungstrichtern jeder der drei Spulenreihen;

Fig. 7

eine Ausführungsmöglichkeit der Erfindung mit vier nebeneinander angeordneten Spulenreihen;

Fig. 8

eine weitere Ausführungsmöglichkeit der Erfindung mit jeweils zwei übereinander angeordneten Spulenreihen;

Fig. 9

eine schematische Seitenansicht einer Transporteinrichtung zu den Spulenreihen;

Fig. 10

eine schematische Seitenansicht einer Weiche;

Fig. 11

eine Draufsicht auf die Ausführungsform nach Fig. 10.

The invention is described below with reference to exemplary embodiments shown in the drawing. The drawing shows:

Fig. 1

is a schematic side view of three rows of spools above a drafting system of a ring spinning machine;

Fig. 2

another embodiment of the invention in side view;

Fig. 3

a further embodiment of the invention with staggered supply spools;

Fig. 4

a schematic representation of a vertically movable guide element in side view;

Fig. 5

a further embodiment of the guide element in side view;

Fig. 6 VII-XII

is a schematic representation of the adjustment by a spindle pitch compared to the associated match guide funnels of each of the three coil rows;

Fig. 7

an embodiment of the invention with four rows of coils arranged side by side;

Fig. 8

a further embodiment of the invention, each with two rows of coils arranged one above the other;

Fig. 9

is a schematic side view of a transport device to the coil rows;

Fig. 10

a schematic side view of a switch;

Fig. 11

10 shows a plan view of the embodiment according to FIG. 10.

According to Figure 1, three rows of coils 3, 4, 5 are arranged in the same horizontal plane. Feed coils 1, 1ʹ, 1ʺ, whose fuses 2, 2ʹ, 2ʺ run via guide elements 7, 8, 9, 10 to match guide funnels 12 of a schematically illustrated drafting unit 11 of a ring spinning machine, not shown, hang on these rows of coils.

As can be seen from Fig. 1, the guide elements 7, 8, 9 and 10 for the fuses 2, 2ʹ, 2 Sp are arranged so that each of the coil rows 3, 4, 5 along rails 21, 22, 23 extended or retracted can be, without being handicapped by the match.

Rollers 24, 25, 26 run on the rails 21, 22, 23, to which the corresponding supply spools 1, 1ʹ, 1ʺ are fastened via hanging brackets 27, 28, 29.

As can be seen from FIG. 1, the guide elements 7 and 9 serve for the course of the fuse 2 of the supply spool 1; the guide elements 8 and 10 serve for the course of the matches 2ʹ and 2ʺ to the corresponding match guide funnels 12. This arrangement is characterized by a small space requirement.

In the embodiment according to FIG. 2, only guide elements 8ʹ are provided, which are located in the space between the coil rows 4 and 5. In this embodiment, the slivers 2 of the supply coils 1 of the coil row 3 run directly to the corresponding sliver guide funnel 12, which thus takes over the function of a guide element. Here, the coil 1 must be moved further away from the coil 1ʹ. The resulting larger space requirement is compensated for by the elimination of guide elements for the fuses 2 of the coil row 3.

In order to simplify the functional manual insertion of the matches 2ʹ and 2ʺ via the guide elements 8ʹ, the guide element 8ʹ can be arranged on a swivel arm 20 in the embodiment according to FIG. 2. This pivot arm 20 can pivot about its pivot point 39, which is provided below the coil row 5, for example counterclockwise in the lower region 8 Bereich. This gives good access to the guide element and thus a good insertion possibility for the corresponding fuses 2ʹ and 2ʺ. After this operation has been carried out, the swivel arm 20 pivots back into its working position, that is, into its upper position shown in FIG. 2, so that the entire arrangement is functional again.

In the embodiment of FIG. 3, two rows of coils 4ʹ and 5ʹ are arranged in a horizontal plane, whereas the third row of coils 3ʹ is located in another horizontal plane below. Again, guide elements 7, 8, 9, 10 are provided in order to guide the corresponding slivers 2, 2ʹ, 2ʺ to the respective sliver guide funnel 12 in such a way that the individual coil rows 3ʹ, 4ʹ, 5ʹ can be moved in or out without one mutual disability takes place. This arrangement is characterized by a particularly small space requirement in width, but requires rails 21 at a different height than those of the coil rows 4ʹ and 5ʹ.

The workflow is such that when the spools of a running spool row run out, the outgoing fuses 2, 2ʹ, 2ʺ are replaced by rovings of the further spool row retracted with full spools and this spool row thus becomes the outgoing spool row, while the expired spool row as a further spool row extended with empty tubes and retracted with full bobbins, this changing process being repeated in turn between all rows of bobbins. Here the running coil rows can be emptied out of phase. In the exemplary embodiments shown in FIGS. 1 to 3, the coil row 5 or 5ʹ, for example, has run most empty, so that after its idling, this coil row 5 or 5ʹ moves out of the work area and by a new coil row 5 provided with full supply coils 1ʺ is replaced.

In the embodiment according to FIG. 2, the guide elements 8ʹ are each fastened to a swivel arm 20 between the rows of coils 4 and 5.

On the other hand, in a further embodiment of the invention, there is also the possibility of arranging the corresponding guide elements on telescopic hanging rods. 4, such a guide element 7ʹ is attached to a rod 13, on which a handle 19 is located in the lower region. This rod 13 is connected to a piston rod 15 which runs within a cylinder 14 in which a spring 16 is located. When pulling on the handle 13, the hook-like guide element 7ʹ can be moved downward from the working position into the insertion position for the corresponding fuse, pressure medium being sucked into the cylinder 14 via a schematically illustrated check valve 17. After the corresponding fuse has been inserted, the handle 19 is released by the operator, the spring 16 moving the rod 13 upwards into the working position for the guide element 7ʹ and the pressure medium emerging from the piston 14 again via a schematically illustrated throttle 18. This constructive design option also makes work easier for the operator when the fuse is properly inserted into the guide element 7gerech.

Fig. 5 shows an embodiment of a guide element 9 or 9 ', which is arranged only on a rod 13 which is suspended above the ring spinning machine for arrangement at the locations 9 and 9' shown at the bottom left in Figures 1 and 3. In the embodiment according to FIG. 3, in the embodiment according to FIG. 1, the lower guide element 9, 9 'also has the task of preventing the running slub end from falling onto the drafting system 11. In this embodiment, the guide element 9 or 9 ', in contrast to the guide element 7' according to FIG. 4, has an upper hook-shaped area 40 in order to be able to perform the aforementioned functions.

In Fig. 6 in work phases VII to XII the workflow when changing three rows of coils is shown schematically in plan view. As can be seen, the coil row C (analog coil row 3 according to FIGS. 1 to 3) has run empty, so that sleeves 6 are present here. This coil row C is discharged in the direction of the arrow. The spool rows A and B (analog spool row 4 and spool row 5 according to the embodiments according to FIGS. 1 to 3) supply fuses to the roving guide funnels 12 of the ring spinning machine.

After working position II (not shown), coil row C is replaced by full supply coils; the coil row A consists of almost empty sleeves 6 '; the coil row B has half expired. As can be seen, the respective slits of the coil rows A and B assume a different angular position to the sliver guide funnels 12 than in the working position I.

After working position III (not shown), the coil row A has run empty, so that the sleeves 6 of the coil row A are removed. Now the respective slits of the coil row C are inserted into the corresponding sliver guide funnels 12, the coil row A being in turn loaded with full supply coils according to working position IV (not shown). In this working position are the sleeves 6 "of the coil row B shortly before idling, whereby after the working positions V and VI (not shown) these sleeves 6" are replaced by full supply coils, and in these positions the coil rows A and C lead the corresponding slips to the sliver guide funnels .

As can be seen, an offset of the coil rows A, B and C relative to the positions a, b, a ', b' and a "and b" of the sliver guide funnels 12 is provided by the amount + x and -x, in each case by one to achieve a favorable angular position of the running matches with respect to the position of the match guides. While in the working position according to I the fuses of the coil row A each run into the guide funnels 12 in positions a, a 'and a ", in the working position according to V there is an entry into positions b, b', b" while in this position the coil row C works in the openings a, a ', a "and the sleeves 6" of the coil row B are exchanged.

In the working position according to VII, the coil row B is shifted by the amount a -x; the spool rows A and B provide fuses, whereas the sleeves 6 'of the spool row C are empty and are replaced by full supply spools after working position VIII. In the working positions IX and X the spool row A has run empty and is replaced by full supply spools, whereby in the working positions XI and XII the supply spools of the spool row A are offset by the amount a -x, in turn to a favorable insertion angle for the slits of the full or half-full supply spools.

1 to 6, 3 rows of coils were used in each of the exemplary embodiments. Instead, there is also the possibility of providing four rows of coils 30, 31, 32, 33 according to FIGS. 7 and 8. 7, these rows of coils lie in a horizontal plane, again with guide elements 7 and 8 or 9 and 10 are provided. As can be seen, the running coil rows 30 to 33 are also emptied out of phase; in the position shown in FIG. 7, the coil row 31 has almost expired.

According to FIG. 8, there is also the possibility of arranging two rows of coils 30 and 31 or 32ʹ and 33ʹ one above the other and leading them accordingly via guide elements to the guide funnels 12 in front of the entrance of the drafting unit 11 of a ring spinning machine, not shown in any more detail.

9 to 11 show a transport system for the delivery or removal of full supply spools or empty tubes to the work stations of the ring spinning machine. As can be seen, a rail 36 can be connected to a rail 34 via a height-adjustable rail section 35 which can be rotated about a pivot point 38 and can be acted upon by a piston-cylinder unit 37. The full supply spools are initially on the rail 21ʹ according to FIG. 9 and can, if necessary, be transported to the work station above the ring spinning machine via the rail 34 and the height-adjustable rail section 35 which connects to the rail 36. This design option occurs when rows of coils are arranged in the gate at different heights. Here, from the normal height of the supply and discharge rails, incline and / or descent routes to the rails arranged in other heights must be provided in the gate. In this case, there is the possibility of using height-adjustable rail sections 35 according to the embodiment according to FIGS. 9 to 11. In any case, there is an automatic transport system, with control devices ensuring that full supply spools are always closed and empty sleeves at the right time the rows of coils are discharged.

Claims (21)

1. A process for feeding a ring spinning frame with pattern bobbins, with at least two rows of bobbins running off extending along each side of the machine and supplying roving to operating positions, and a further row of bobbins which can be taken out with empty bobbins and brought in with full bobbins, characterised in that on the emptying of the bobbins (1, 1', 1") of a row of bobbins (3, 4, 5; 30, 31, 32, 33) which is running off the rovings (2, 2', 2") which are running off are replaced by rovings of the further row of bobbins which is brought in with full bobbins and the latter row of bobbins thus becomes the row of bobbins which is running off, whilst the row of bobbins which has run out is taken out with empty bobbins (6, 6', 6") and brought in with full bobbins from now on as the further row of bobbins, and that this alternating process is repeated between all the rows of bobbins in turn.
2. A process according to Claim 1, characterised in that the further row of bobbins is aligned by longitudinal displacement to the operating positions being operated for its arrangement as a row of bobbins which is running off (Fig. 5).
3. A process according to Claims 1 and 2, characterised in that the running out of the rows of bobbins which are running off occurs out of phase.
4. A device for carrying out the process according to Claim 1, characterised in that all the rows of bobbins (3, 4, 5) are arranged so that they can be taken out and brought in independently of each other and guide elements (7, 8, 9, 10) for the rovings (2, 2', 2") which are running off are disposed outside the paths of movement of the rows of bobbins (3, 4, 5).
5. A device according to Claim 4 with three rows of bobbins arranged side by side, characterised in that the rows of bobbins (3, 4, 5) lie in the same horizontal plane (Fig. 1, Fig. 2).
6. A device according to Claim 5, characterised in that the guide elements (7, 8, 9, 10) are disposed within and underneath the spaces between the rows of bobbins (3, 4, 5).
7. A device according to Claim 5, characterised in that guide elements (8') are disposed in a space between two rows of bobbins (4, 5) and that roving guide funnels (12) located below them form guide elements for the third row of bobbins (3) (Fig. 2).
8. A device according to any one of the preceding Claims, characterised in that at least one of the group of guide elements (7') formed as hooks in the spaces between the rows of bobbins (3, 4, 5) can be adjusted vertically.
9. A device according to Claim 8, characterised in that the guide elements (7') of the vertically adjustable group are disposed on hanging rods (13) formed like telescopes (Fig. 4).
10. A device according to Claim 9, characterised in that each rod (13) is formed so that it can be acted upon by a means of pressure (Fig. 4).
11. A device according to Claim 8, characterised in that the guide elements (8') of the vertically adjustable group are disposed on swivel arms (20) disposed in the lower region of a row of bobbins (5) (Fig. 2).
12. A device for carrying out the process according to Claim 1, with three rows of bobbins, characterised in that two rows of bobbins (4', 5') lie in the same horizontal plane and the third row of bobbins (3') lies in a horizontal plane below this (Fig. 3).
13. A device according to Claims 9, 10 and 12, characterised in that the telescope-like rods (13) for the guide elements are disposed in the space between the two rows of bobbins (4', 5') which lie in the same horizontal plane.
14. A device according to any one of the preceding Claims, characterised in that each row of bobbins is attached to a control device for adjustment around a spindle gauge in relation to the associated roving guide funnels (12).
15. A device according to Claim 14, characterised in that the control device is formed so that it is acted upon mechanically, electrically, or by a means of pressure.
16. A device for carrying out the process according to Claim 1, characterised in that four rows of bobbins (30, 31, 32, 33) are provided.
17. A device according to Claim 16, characterised in that the four rows of bobbins are arranged side by side (Fig. 7).
18. A device according to Claim 16, characterised in that each two rows of bobbins are arranged above each other (Fig. 8).
19. A device according to any one of the preceding Claims, characterised in that rails (21, 22, 23) for the rows of bobbins can be attached to feeding and take-off elements (Fig. 9).
20. A device according to Claim 19, characterised in that the feeding and take-off elements are each formed as a rail (34) and can each be attached via a set of points to the relevant rail of the row of bobbins.
21. A device according to Claim 20, characterised in that the feeding and take-off elements can be attached to the rails of the rows of bobbins via vertically adjustable rail sections (35) (Fig. 10).

Images