EP1217109A2 - Spinning device - Google Patents

Abstract

A spinning assembly has a jet block which converts a fibre feed into a thread in a guide passage. The threads are spun by an array of twisting air jets. The assembly has a rotating or stationary hollow spindle with an inlet to a yarn passage which spins the fibres to thread. One or all of the fibre passage (C), jet (13) and spindle (A) can be opened for access. The hollow spindle inlet is a ring which remains attached to the spindle on disassembly. The ring may be sub-divided, the component parts remaining attached to the commensurate spindle halves.

Description

The invention relates to a spinning device for producing a spun thread from a fiber structure, comprising a nozzle block with a fiber conveying channel, with a fiber feed surface for guiding the fibers and with a nozzle part with a or several nozzles that blow the fiber assembly with a rotating air stream and a rotating or stationary hollow spindle with a Entry opening to a yarn channel for receiving from the fiber feed surface supplied fibers and for guiding the spun thread.

In such a spinning device, the fibers are either drawn from a drafting system or from a suction drum against the fiber feed channel and in this in the Entrance mouth of a rotating or stationary hollow spindle guided, the front ends of such fibers in the fiber structure and in the entrance mouth, or in the yarn channel, while the rear free ends spread and captured by the rotating air flow and around which is already in the Entrance mouth, or located in the yarn channel, i.e. integrated front ends are twisted around to create a real twist yarn, similar to a ring spun yarn, it being noted that the term "front" and "rear" ends of the fibers related to the direction of conveyance of the Fiber was chosen.

In practice, however, is the distance between the exit of the fiber feed channel and the entry mouth of the spindle is very small, for example a millimeter, so that Spinning processes have a certain sensitivity to dirt, especially small ones Fragments of shell parts. In the event of a fault, it is therefore necessary to: Extend distance between the spindle and the fiber feed channel, such that a Cleaning procedure is possible.

Another need to remove the spindle from the fiber feed channel, respectively Separating the nozzles exists when piecing, because there is a yarn end for piecing of the last spun yarn back through the spindle in the direction Fiber guide channel must be brought and possibly even further through this Fiber guide channel against the delivery rollers of a fiber supplying Drafting system.

For this purpose, the prior art in DE 4308392 A1 (US 5419110) shows that the spindle is displaced backwards so far in the axial direction from the spinning unit can be that a suction element placed in between the yarn end through the Can suck the spindle and bring it against the spinning unit.

In another prior art, in EP 807699 A 2 (US 5813209), a such method additionally supplemented with a blowing device, by means of which the End of yarn through the fiber conveyor channel against the delivery roller pair of the drafting system is blown to spin the end of the yarn with the newly supplied fibers of the Unite drafting system.

The disadvantage of this process is the complex process steps and the complex device, which the elements in the axial direction of Must separate the spinning process and bring auxiliary elements in between ultimately to bring the end of the yarn to the place where it is to be attached with the supplied fibers. This usually leads to such devices are arranged vertically, that is, the drafting system in front of the spinning device Sliver takes over from a standing jug underneath and usually delivers the knitted fiber structure in the vertical direction of the spinning unit. This Arrangement is the most appropriate because of the operation of the spinning unit, since that This gives operators a good overview of the spinning process and one receives good access for the operation of the spinning elements. As a rule, that too If possible, the winding unit in the sequel is designed so that it can be used by can be operated on the same side of the machine. If, as previously mentioned, the Elements of the entire unit must be moved apart in the spinning direction, to guide tools in between so that piecing can be carried out so this pulling apart leads to an uncomfortable, long, that is, high and unfavorable for the operator.

It is therefore an object of the invention, the method for cleaning the spinning station or to simplify for piecing.

The object is achieved in that at least the fiber feed channel can be divided in this way and to open it is that the fiber guide surface is open and accessible.

Advantageously, the nozzle part can also be divided and opened in such a way that it is open and is accessible. Furthermore, it is also advantageous, also the spindle to make it divisible accordingly so that the yarn channel is open and accessible.

The advantage of the invention is that all three elements mentioned, without the axial disassembly of the entire spinning unit, in a direction perpendicular to the spinning direction can be opened, so that also the accessibility to the critical point between the entry mouth of the spindle and the exit point of the Yarn guide channel is optimally enabled.

Fig. 1

einen Längsschnitt durch ein Streckwerk und durch eine Spinneinheit, teilweise halbschematisch dargestellt

Fig. 2

eine Ansicht entlang der Schnittlinie I-I

Fig. 3

einen Längsschnitt durch eine Variante der Spinnvorrichtung von Fig. 1

Fig. 4

einen Detailschnitt aus der Fig. 3

Fig. 5

einen Längsschnitt durch eine weitere Variante der Spinnvorrichtung von Fig. 1

Fig. 6

einen Längsschnitt durch eine Spinneinheit als Variante der Spinneinheit von Fig. 3 gemäss den Schnittlinien V-V von Fig. 7

Fig. 7

einen Querschnitt durch Fig. 6 entlang der Schnittlinien III-III

Fig. 8

ein Querschnitt durch Fig. 6 entlang den Schnittlinien IV-IV

Fig. 9

eine Teilvergrösserung von Fig. 8

Fig. 7.1

eine Variante der Vorrichtung von Fig. 7

Fig. 8.1

eine Variante der Vorrichtung von Fig. 8

The invention is illustrated by means of a few examples. It shows:

Fig. 1

a longitudinal section through a drafting system and through a spinning unit, partially shown semi-schematically

Fig. 2

a view along section line II

Fig. 3

2 shows a longitudinal section through a variant of the spinning device from FIG. 1

Fig. 4

3 shows a detail section from FIG. 3

Fig. 5

2 shows a longitudinal section through a further variant of the spinning device from FIG. 1

Fig. 6

4 shows a longitudinal section through a spinning unit as a variant of the spinning unit from FIG. 3 according to the section lines VV from FIG. 7

Fig. 7

a cross section through Fig. 6 along the section lines III-III

Fig. 8

a cross section through Fig. 6 along the section lines IV-IV

Fig. 9

a partial enlargement of Fig. 8

Fig. 7.1

a variant of the device of Fig. 7th

Fig. 8.1

a variant of the device of FIG. 8

Fig. 1 shows a drafting system 1 with input rollers 21, middle rollers 20 with straps 20.1, which fibers transport against a pair of delivery rollers 2, which in turn the Deliver fibers further into a fiber feed channel 16. The delivery rollers 2 exist on the one hand from an upper delivery roller 18 and a lower delivery roller 19.

The fiber-processing spinning unit (S) then includes the delivery rollers 2 a fiber conveying part 3, consisting of an upper fiber conveying part 4 and one lower fiber conveyor part 5. This is followed by a nozzle part 6 with blowing nozzles 17, which are arranged in a manner known per se such that, on the one hand, on the basis of a Air injector effect is sucked through the fiber feed channel 16 and on the other hand in in a known manner, this air as a vortex flow free, preferably rear Ends of the supplied fibers and around which is already in the mouth part 26 a yarn guide channel 12, i.e. wrapped front ends twisted around and twisted into a yarn.

A mandrel 23 extends close to or even in the mouth part 26, thereby a relatively narrow passage space for the fibers to be brought into the mouth 26 arises, which can lead to malfunctions if dirt, for example, fractions of cotton seeds to be clamped in between so that there is an immediate interruption in spinning and yarn.

In such a case, according to the prior art, the spindle 25 must be in the axial direction Retracted toward the space between the mouth 26 and the To clean mandrel 23, and it must, as mentioned at the beginning, also a suction element on the Mouth 26 are set to take back the yarn end to this to bring to or through the fiber guide channel 16.

In order to simplify this, at least the fiber conveying part 3 is designed to be divisible by the upper fiber conveyor part 4 together with an associated channel part 22 in the direction of arrow C. can be lifted or pivoted away, so that the fiber feed channel 16 is free and the area in front of the mouth 26 is accessible. The lower one remains Fiber conveyor part 5 together with the mandrel part 24 stationary.

As a variant, there is also the possibility of the nozzle part 6 with everything that is dash-dotted and include lines united in arrow B, that is also including the line Lifting or swiveling nozzles 17 in order to thereby provide even more space for the To create cleaning. The lower nozzle part 8 and the nozzle shown therein remain 17 stationary.

A still further variant consists in the yarn guide part 9 together with an upper part 13 of the spindle 12 and an upper yarn guide part 10 in the direction of arrow A. lift or swivel after the nozzle part G in direction B was lifted or pivoted, so that the yarn guide channel 12 to Cleaning is free. This leaves a lower yarn guide part 11 together with a lower part 14 of the spindle 25 stationary.

The advantage of opening the above three elements not only brings the advantage of Cleaning, but also the advantage of simply bringing back a yarn end, which are inserted on the one hand in the lower part 14 and in the open fiber conveying channel 16 to even end this end manually between the entrance of the fiber feed channel 16 and bring the delivery rollers 2.

Another possibility is to move the upper delivery roller 18 in the direction of arrow C.1 also to be lifted or swiveled around the aforementioned yarn end even further over the lower feed roller to thereby advance this yarn end as shown to combine the pair of delivery rollers 2 with newly fed fibers.

The actual mechanism for lifting or pivoting the elements is not Subject of this invention.

2, because it is an element that can be separated from the nozzle part 6, not shown as a cut, but as a separate element. 3 shows how mentions a variant of the device of Fig.1 by instead a delivery roller pair 2, the upper delivery roller 18 with a suction roller 27 with a Suction air connection 29 cooperates to fibers in the nip between them pull both rollers out of the strappy pair and in area 30 on the Suction roller by means of the rotation of the suction roller and the suction effect against the To deliver fiber feed channel 16 and by means of the blowing air 31, then to the in Suction segment 28 located suction area 30 to blow into the fiber feed channel 16 and thereby the aforementioned, generated by the injector action of the nozzles 17 To support transport air.

In this variant, all are below the dash-dotted and arrow D elements located above the above-mentioned dividing line 15 lifted.

The same applies to the elements encompassed by the dash-dotted lines A. can be lifted or pivoted in the direction of arrow A, in an analogous manner as described for Fig. 1.

5 shows the same units, which are included with the letters A and B, while section C of FIG. 1 in FIG. 5 has a variant in that instead of the lower delivery roller, a suction roller 27 is provided, which with the upper Delivery roller 18 cooperates and forms a nip. After this nip the fibers on the suction roll 27 in the suction area 30 on the surface of the Suction roller held and at the end of this suction area 30 by a blowing air stream 31 blown against the fiber feed channel 16, in which the aforementioned air flow Fibers 34 takes over and promotes through the fiber feed channel 16.

In order to form a second nip line on the suction roller 27, a pressure roller 35 by means of pressure springs 36 resiliently mounted so that the fibers on the surface of the Suction roller can be pressed with the force of the springs, thereby a more stable To achieve fiber delivery in the fiber feed channel 16 than without this pressure roller 35th

The pressure roller 35 is spring-mounted in a roller bearing part 37, as mentioned, wherein the roller bearing part 37 is fixedly connected to a channel part 22.

Analogous to those included in FIG. 1 with the arrow C and the dashed lines Elements can be used to lift or swivel group E elements be to expose the fiber feed channel 16, for example, one of the Spindle 12 coming yarn end to be transferred to the suction roll 27.

There is also the possibility of the upper delivery roller 18 according to arrow E.1 to take off, or to swing away, so that the aforementioned yarn end around half the circumference of the suction roller 27 can be performed, as with the Yarn end 43 is shown.

There is therefore, according to this figure, the possibility, not only that Fiber feed channel 16 to open, but also the one included with the letter B. Lift the nozzle part and the spindle part covered with the letter A, so that on the one hand cleaning and on the other hand attachment is possible.

6 and 7 show in principle the same elements as those in the Registration of the same applicant, which in Switzerland with the number 2000/1845/00 on September 22, 2000 was shown. On the other hand, they correspond License plate no longer the same license plate as in the aforementioned application. Likewise, certain elements have been modified somewhat to accommodate the opening of the Allow fiber feed channel 16 and the spindle 25.

6 therefore shows a nozzle part 6 with an upper nozzle part 7, a lower one Nozzle part 8, in which blowing nozzles 17 are provided. By means of these blowing nozzles 17, of which two more can be provided, one is in the generates the aforementioned vortex already described, by means of which free rear fiber ends are wound around front fiber ends to thereby to produce a yarn that does not pass through the yarn guide channel 12 from here drawn-off rollers shown is withdrawn.

In the yarn guide channel 16, the fibers, which are from the left, with a view of the picture seen, brought to a fiber guide surface 41, by means of a Injector action of the nozzles 17 generated suction air flow on the fiber guide surface 41 brought against an inlet mouth 26 of the spindle 25 to, as mentioned, the To produce yarn.

Here too, as mentioned earlier, there is a relatively narrow distance between the End edge of the surface 41 opposite the mouth 26, so that on the one hand the possibility there is to have to perform a cleaning here or a new start or at Spinning on a yarn end from the yarn guide channel 12 via the fiber guide surface 41 to the left, looking at the pictures, to bring this end of yarn start with newly supplied fibers.

About the mentioned cleaning as well as about the mentioned attachment or piecing easy to carry out, there is the possibility of the upper nozzle part 7 in To lift arrow direction F or to swivel in a plane which is vertical to the middle 15 of the yarn guide channel. The fiber guide surface 41 is thus free accessible.

Furthermore, there is also the possibility of an upper part 13 of the spindle 25 in To lift or swing up arrow direction G, the upper part 13 with a Upper yarn guide part 10 is connected, on which the not shown here Device is attached.

Again, the device necessary for lifting in direction F is not shown and not the subject of the invention.

A lower part 14 of the spindle 25 is in turn with a lower yarn guide part 11 connected, which remains stationary.

The upper part 13 and the lower part 14 are separated at the separating surface 15 the spindle 25. Furthermore, the lower nozzle part 8 is also stationary Support part 42 firmly connected, so that the fiber guide surface 41 is also stationary is.

Fig. 6.1 shows that the spindle 25 in the area of the inlet mouth 26 with a wear-resistant ring 22 is provided. This ring 22 is because the spindle 25 like described with FIGS. 8 and 9 is opened, with the stationary part 14 or movable part 13 connected, so that still for said cleaning, or piecing, there is enough freedom.

On the other hand, there is also the possibility of this ring according to FIG. 9 also in one upper connected to the upper part 13 and in a lower to the lower part 14 share connected part. The separation channels 39 can also each in a ring half are provided with the same advantage as described for FIG. 9.

Fig. 7 shows a cross section corresponding to the section lines III-III (Fig. 6), in which shows a separating surface 48, of which the upper nozzle part in the direction F or F.1 is lifted off.

In addition, channels 40 are embedded in order to clamp edge fibers on the Avoid the interface.

Furthermore, the elements with the same characteristics have the same functions as Fig. 6 described.

Fig. 8 shows a section through the spindle 25 according to the section lines IV-IV with the separating surface 15, which coincides with the center line of the spindle. The further characteristics corresponding to the characteristics in Fig. 6 and have the same Function as in Fig. 6.

9 shows an enlargement of the yarn guide channel 12 with the separating surface 15, separation channels 39 additionally being provided in order to be analogous to the separation channels 40 to avoid jamming of edge fibers in the clamping surface 15.

Furthermore, the same characteristics have the same functions as in the previous figures.

FIG. 7.1 shows a variant of FIG. 7 in that the fiber conveying channel is not by means of a flat separating surface 38 (FIG. 7), but by means of a channel-shaped, lower nozzle part 8.1 and a matching, segment-shaped, upper Nozzle part 7.1.

This type of separation of the two parts has the advantage that the separation channels 40, as shown in Fig. 7, can be dispensed with, since the separation of the segment-shaped, upper nozzle part 7.1 is located much higher than that Separation surface 38 in FIG. 7. This means that there is even less risk of fibrils captured in the separation area can be captured than with the separation channels 40 of FIG. 7th

The lifting of this upper nozzle part 7.1 happens exactly the same as for that upper nozzle part 7 of FIG. 7.

The same principle is applied in Fig. 8.1, in that the interface is not a plane is like the separating surface 15 of FIG. 8, but is also provided in the form of a channel, in which the upper part 13.1 is provided in the form of a segment and corresponding to channel-shaped lower part 14.1 fits in the sense of a sealing surface.

It also applies here that the segment-shaped upper part 13.1 is lifted up in the same way becomes like the upper part 13 of FIG. 8.

Legend

1.

drafting system

Second

delivery rollers

Third

Fiber conveying part

4th

Upper fiber conveyor

5th

Lower fiber feed section

6th

nozzle part

7th

Upper part of the nozzle

7.1

Segment-shaped upper nozzle part

8th.

Lower part of the nozzle

8.1

Channel-shaped lower nozzle part

9th

yarn guide

10th

Upper thread guide part

11th

Lower thread guide part

12th

yarn guide

13th

Top of 12

13.1

Segmented top of 12

14th

Lower part of 12

14.1

Channel-shaped lower part of 12

15th

Middle and dividing surface of 25

16th

Fiber conveying channel

17th

nozzles

18th

Upper delivery roller

19th

Lower delivery roller

20th

Center rolls with 20.1 straps

21st

feed rollers

22nd

Wear-resistant ring

23rd

mandrel

24th

mandrel part

25th

spindle

26th

Entry mouth from 12

27th

suction roll

28th

suction segment

29th

suction air

30th

suction area

31st

blowing air

32nd

Retired yarn end

33rd

Middle and dividing surface of A and D

34th

fibers

35th

pressure roller

36th

pressure spring

37th

Roller bearing part

38th

interface

39th

separation channels

40th

separation channels

41st

Fiber guide surface

42nd

supporting part

43rd

yarn

Claims (3)

Spinning device for producing a spun thread from a fiber assembly comprising a nozzle block with a fiber conveying channel, with a fiber guide surface for guiding the fibers and with a nozzle part with one or more nozzles which act on the fiber structure with a rotating air stream and a rotating or stationary hollow spindle with an entry opening to a yarn channel for receiving the fibers supplied by the fiber feed surface and for guiding the spun thread characterized in that at least one of the following elements can be divided and opened in such a way that this element is open and accessible, namely the fiber feed channel (C), the nozzle part (13) and the spindle (A). Spinning device according to claim 1, characterized in that the input mouth of the hollow spindle consists of a ring which remains firmly connected to the stationary or movable part of the spindle when the spindle is opened. Spinning device according to claim 2, characterized in that the ring is divisible like the spindle and each half of the ring is assigned to the corresponding spindle half.

Images