CH714068A1 - Multiple nozzle connection of a textile machine and textile machine. - Google Patents

Abstract

The invention relates to a multiple nozzle connection (29) of a textile machine, in particular a ring spinning machine, for the alternative connection of a compacting device or a suction tube device (46a) to a connection piece (42) of the textile machine and to a textile machine equipped with the multiple nozzle connection (29). The connection piece (42) has three connections (45), wherein at least one connection (43) is closed as a function of a connected compression device or a suction tube device (46a).

Description

description

Technical field The invention relates to a multiple nozzle connection of a suction line of a textile machine according to the independent claim and to a textile machine equipped with it.

PRIOR ART [0002] A large number of designs are already known from practice, a compacting device being arranged downstream to compact (compress) the fiber material (fiber strand) discharged from a drafting unit. Following such a compression device, the compressed fiber material, after passing through a clamping point, is fed to a swirl generating device. Such a swirl generating device is e.g. in a ring spinning machine from a rotor which rotates on a ring, the yarn produced being wound onto a rotating sleeve. Essentially suctioned circumferential, perforated suction drums or circumferential straps with perforations are used. A special suction area is defined on the compression element using appropriate inserts within the suction drum or within the circumferential straps. Such inserts can e.g. are provided with appropriately shaped suction slots, to which a negative pressure is applied, as a result of which a corresponding air flow is generated at the periphery of the respective compression element. This air flow, which is oriented essentially transversely to the transport direction of the fiber material, in particular protrudes fibers into the yarn.

In the known solutions, the fiber material delivered by the drafting unit is guided above or below the compression devices used. Particularly when used on a ring spinning machine, it is necessary to provide an additional clamping point after the suction zone in order to obtain a twist lock.

Such devices of this type are shown and described for example in publications EP 947 614 B1, DE 10 2005 010 903 A1, DE 19 846 268 C2, EP 1 612 309 B1, DE 10 018 480 A1 or CN 1 712 588 A. Service. The publications mentioned above are essentially compression devices which are permanently installed after the respective drafting system. These compression devices are driven in part via special drive shafts arranged over the length of the spinning machine, which are either in drive connection with a suction roll or a rotating apron or via permanently installed drive connection to correspondingly arranged pressure rolls of the compression device.

In practice, there is a requirement to retrofit existing spinning machines with a conventional drafting unit with such a compression device in order to secure the possibility of producing high-quality yarns in these machines as well. Devices have therefore been proposed with which conventional drafting systems can be retrofitted with such a compression device. One such is to be found, for example, in DE 10 227 463 C1, the punch of the drafting unit being extended in order to support an additional drive roller. The drive roller, which extends over the entire length of the spinning machine, is provided for driving the retrofitted compacting device. The attachment and installation of such a retrofit is very time-consuming and inflexible, i.e. if a desired dismantling to a normal drafting system without a compression device is again very time-consuming.

In the published DE 10 050 089 A1, an embodiment with a compression device is shown, which is intended for retrofitting to a conventional drafting device.

From CN 2 851 298 Y a device is known, wherein a compaction roller with a rotation locking roller is accommodated in a bearing element which is connected via a plate via screws to a pivotable loading arm of a drafting device. In the assembled and locked position, the drive is transmitted via friction from an output roller directly connected to a drive and the pressure roller assigned to it, to the compression roller and the rotation lock roller. The compression device shown here is also intended for retrofitting to existing drafting equipment of spinning machines without compression. The attachment of the compression unit shown here to an existing drafting unit via a screw connection, and the threading in the axis of the pressure roller is relatively time-consuming and requires an additional adjustment of the distances. In addition, the connection to a vacuum source must be made separately.

In the embodiments described above, the suction elements, which are assigned to a defined compression area for compressing the fiber material, are acted upon by a vacuum via additionally arranged lines which are connected to a vacuum source.

To simplify such compression devices, whereby a simple and quick installation on conventional drafting units is made possible without the need to install additional drive elements, an embodiment is proposed in WO 2012 068 692 A1, the compression element in the form of a suction drum and the pinch roller are rotatably mounted on a support element. The support element is detachably fastened to the spinning machine by means of fastening means. To a drive connection between the drafting rollers and the

CH 714 068 A1 to produce a detachable compression device, the compression device is pivoted about a pivot axis in the direction of the pair of output rollers of the drafting system via the support element, a friction wheel fastened coaxially on the respective suction drum with the bottom roller of the pair of output rollers of the drafting system making a frictional connection (via friction) , The compression device is held in this drive connection by means of appropriately arranged spring elements (e.g. on the loading arm of the drafting system). To make the drive of the compression device more flexible, WO 2012 068 692 A1 further proposes to provide a second gear stage between the drive element of the compression element of the first gear stage and the compression element.

A disadvantage of this embodiment, however, is that the conversion of the textile machine from a compacting device to a conventional thread suction is relatively costly and time-consuming.

DESCRIPTION OF THE INVENTION The object of the invention is now to simplify and improve the compression devices known from WO 2012 068 692 A1 for two drafting unit units arranged next to one another in order to achieve simple conversion from a compression device to a conventional thread suction device.

In particular, this object is achieved by a multiple nozzle connection of a textile machine, in particular a ring spinning machine, comprising a connection piece for the alternative connection of a compression device or a suction pipe device to a suction line of the textile machine, the connection piece having three connections and depending on a connected compression device or a suction pipe device at least one connection is closed.

Advantageously, the connection piece can have three connections located next to one another, the compression device being connectable to the middle connection, the side connections being closed, and a suction pipe device being connectable to the side connections and the middle connection being closed.

This embodiment of the invention is advantageous because the machine can be easily converted. Furthermore, a spacer and a seal can advantageously be provided between the connecting piece and the compression device or the suction device, which allow alignment and sealing of the compression device or the suction device.

The compression device or the suction pipe device are held releasably and pivotably about an axis by a holder of the multiple nozzle connection. The holder can consist of two spaced holding elements, wherein the compression device has two lateral projections and the suction pipe device has a round connecting element for connection to the spaced holding elements. It can be a clip connection. Thanks to two locking lugs, which are connected to openings in the holding elements, the suction device can assume two positions, whereby in an upper position the suction pipes are aligned at right angles to the suction channel or in alignment with the multiple nozzle connection and in a lower position the suction pipes in comparison are inclined downwards to the upper position. The holding elements can advantageously be attached to a holding profile of the textile machine.

The object is also achieved by a textile machine, which is in particular a ring spinning machine, characterized in that it has a multiple nozzle connection according to the invention.

A compression device can advantageously be connected to the multiple nozzle connection, which comprises the following features

- Two suction drums, one suction drum each being assignable to a pair of output rollers of a drafting unit of the textile machine, the pair of output rollers consisting of an output lower roller and an output upper roller;

- The suction drums are rotatably mounted on a shaft attached to a support element with a bearing;

a suction channel runs inside the support element,

- The suction drums each have a drive element which forms a drive connection with the output lower roller in the operating position, and

two clamping rollers are rotatably mounted on a bearing in the middle of a bearing on the support element, each of the clamping rollers resting on the outer circumference of one of the two suction drums under the action of a spring load to form a clamping line,

a suction drum is assigned to the pair of output rollers of a drafting unit,

- Wherein two clamping rollers are rotatably mounted on a common axis on the support element, and

- Wherein each of the pinch rollers to form a clamping line each rest on the outer circumference of one of the two suction drums under the action of a spring load.

Alternatively, a suction device can advantageously be connected to the multiple nozzle connection, which comprises the following features two spaced suction pipes which are connected to one another by at least one connecting element; and a central plate with which a middle connection of the connecting piece can be closed. The compression device or the suction pipe device are further advantageous through the holder of the multiple nozzle connection

CH 714 068 A1 is detachably and pivotably held about an axis, the holder consisting of two spaced apart elements and being attachable to a holding profile, the suction pipe device being able to assume two different positions.

The invention also relates to a method for releasably attaching the compression device or the suction pipe device to the multiple nozzle connection of a ring spinning machine.

[0020] Further advantages of the invention can be gathered from an exemplary embodiment described and shown below.

BRIEF DESCRIPTION OF THE FIGURES [0021] The invention is explained in more detail with reference to the attached figures, wherein

Figure 1 is a schematic side view of a spinning station of a ring spinning machine.

2 shows a multiple nozzle connection according to the invention with a connected suction pipe device;

3 shows a multiple nozzle connection according to the invention with a connected compression device; and

4 shows a section through the multiple nozzle connection with connected suction device according to line A-A in FIG. 2;

represent. Only features important to the invention are shown. The same reference symbols denote the same features in different figures.

WAYS OF CARRYING OUT THE INVENTION FIG. 1 shows a schematic side view of a spinning parts 1 of a spinning machine (ring spinning machine) with a drafting unit 2, which is provided with an input roller pair 3, 4, a middle roller pair 5, 6 and an output roller pair 7, 8. A strap 12, 13 is guided around each of the central rollers 5, 6, which are each held in the position shown about a cage (not shown in more detail). The upper rollers 4, 6, 8 of the roller pairs mentioned are designed as pressure rollers which are rotatably supported on a pivotably mounted pressure arm 10 via the axes 4a, 6a, 8a. Two adjacent drafting unit 2 (twin drafting device) are assigned to a pressure arm 10. The pressure arm 10 is pivotally mounted about an axis 15 and, as shown schematically, is acted upon by a spring element 9. This spring element can also be an air hose, for example. The rollers 4, 6, 8 are pressed against the lower rollers 3, 5 and 7 of the pairs of rollers via the schematically shown spring load. The roller pairs 3, 5, 7 are driven by a drive, not shown. Single drives as well as other types of drives (gears, toothed belts, etc.) can be used. Via the driven lower rollers 3, 5, 7, the pressure rollers 4, 6, 8, or the strap 13 are driven via the strap 12 via friction. The peripheral speed of the driven roller 5 is slightly higher than the peripheral speed of the driven roller 3, so that the fiber material 11 fed to the drafting unit 2 is subjected to a preliminary draft in the form of a sliver between the input roller pair 3, 4 and the center roller pair 5, 6. The main warping of the fiber material 11 takes place between the center roller pair 5, 6 and the output roller pair 7, 8, the output roller 7 having a substantially higher peripheral speed than the center roller 5.

The stretched fiber material 11 discharged from the respective pair of output rollers 7, 8 is deflected downward and reaches the area of a suction zone 16 of a subsequent suction drum 17, which is part of the compression device 46b according to the invention. The respective suction drum 17 is provided with perforations or openings 39 running on its circumference. Following the suction zone 16, a clamping roller 18 is provided for each of the suction drums 17, which rests on the respective suction drum 17 via a pressure load and forms a clamping line with the latter. The respective clamping roller 18 is rotatably mounted on an axis 19 which is held in a guide slot 20 of a U-shaped receptacle of a pressure arm 21. The axis 19 is mounted within the guide slot 20 so as to be displaceable transversely to its longitudinal axis. A plunger protrudes into the guide slot 20 through an opening of the pressure arm 21, which plunger rests on the outer circumference of the axis 19 and is acted upon by a schematically shown compression spring 22. The opening is made approximately in the middle at the end of the guide slot 20 and opens into an essentially closed cavity of the pressure arm 21, in which the pressure spring 22 is arranged. This is supported on the closed end of the cavity and rests with the opposite end on a head of the plunger.

The pressure arm 21 is pivotally mounted about an axis attached to its end in a bearing element. In this swivel position, the axes are held transversely to their swivel axis at the end of a respective guide via a stop edge shown schematically in FIG. 1. The force of the compression spring 22 then loads the clamping rollers 18, which are rotatably mounted on the pressure arm 21, against the respective suction drum 17, the clamping line being formed. The pressure arm 21 is pivoted over dead center until it rests on a stop. In this position, the axis 19 of the pinch rollers 18 is below the plane that passes through the pivot axis and the central axis of the suction drums 17, i.e. the pinch roller 33 is held in this position via dead center. Further details regarding the attachment and design of the pinch rollers 18 can be found in CH 705 308.

CH 714 068 A1 The pressure lever 10 is then pivoted about its pivot axis 15 from an upper position shown in dashed lines to a lower position in which a leaf spring 24 fastened by means of screws 23 to the pressure lever 10 and the web 25 fastened to the leaf spring a compressive force is applied to the compacting device 46b in the direction of the roller 7. The suction drum 17 connected to it is driven by the roller 7 via friction via a drive element 40 described below.

In this “operating position”, the fiber material 11 warped and released by the drafting unit 2 is fed to the subsequent suction zone 16 of the respective suction drum 17 and compressed in a known manner under the influence of the suction air flow generated. Above the suction zone 16, a deflecting screen arranged at a distance can also be attached, as is shown and described in DE 4 426 249, for example. This publication also describes the process of compressing the fiber material.

To generate the required vacuum in the area of the suction zone 16, a vacuum source 26 is provided, which is connected to a central suction channel 27. The suction channel 27 is connected via a line 28, a flexible multiple nozzle connection 29, to the respective end of the suction channel 31 of the compression device 46b which projects in the direction of the suction channel 27. The flexibility of the multiple nozzle connection 29 enables the compression device 46b to be pivoted about an axis. For this purpose, the compression device 46b has two lateral projections 30 which engage in a holder explained with reference to FIG. 2. The schematically shown multiple nozzle connection 29 can be designed in such a way that when two half-shells are joined together, it is connected in a form-fitting manner and tightly to the outside with a suction channel 31 formed. The construction and the assembly of the half-shells in such a support element are known from WO 2012 068 692 A1. The spinning machine can advantageously be retrofitted with the compression device 46b. The structure, the mode of operation and the advantages of the multiple nozzle connection 29 according to the invention are explained in more detail in FIG. 2.

The pinch line generated by the pinch roller 18 simultaneously forms a so-called "rotation blocking gap", from which the fiber material 11 is fed in the conveying direction in the form of a compressed yarn 32 while giving rotation to a schematically shown ring spinning device. This is provided with a ring 33 and a rotor 34, the yarn being wound onto a sleeve 35 to form a bobbin 36 (cop). A thread guide 37 is arranged between the clamping line and the rotor 34. The ring 33 is attached to a ring frame 38 which performs an up and down movement during the spinning process.

2 and 3 show the multiple nozzle connection 29 according to the invention. It serves for the alternative connection of a compression device 46b, as was explained in connection with a ring spinning machine in FIG. 1, or for the connection of a suction pipe device 46a to the suction channel 27 of the FIG ring spinning machine.

Fig. 2 shows the multiple nozzle connection 29 according to the invention with a connected suction tube device 46a to the suction channel 27 of the ring spinning machine. The suction device 46a consists of two suction tubes 47 arranged next to one another, which are connected via a central, round connecting element 50. A second connection between two suction pipes 47 is located at the front end of the suction pipe device 46a. The universal multiple nozzle connection 29 has a connection piece 42 with three connections 43 located next to one another, which are used depending on the connected device. Between the connections 43 and the pre-sealing device or the suction pipe device 46a there are an adapter or spacer 44, which can be connected to the connections 43 of the connecting piece 42, and a seal 45. The compression device 46b can be connected to the middle connection 43, the side connections 43 are closed. A suction pipe device 46a can be connected to the lateral connections 43, the central connection 43 then being closed by a plate 48.

The compression device 46b (Fig. 1, 3) or the suction pipe device 46a (Fig. 2) are releasably held by a holder of the multiple nozzle connection 29. In the exemplary embodiment shown, the holder consists of two spaced-apart holding elements 49. The suction pipe device 46a engages with the round connecting element 50 in the spaced-apart holding elements 49; there is a releasable connection, for example a clip connection. The holding elements 49 are fastened to a holding profile 51 of the textile machine and at the same time hold the adapter or spacer 44 in place.

FIG. 3 shows the multiple nozzle connection 29 according to the invention with a connected compression device 46b, as was explained in FIG. 1 in connection with a ring spinning machine. The universal multiple nozzle connection 29 corresponds to the embodiment in FIG. 2, and has the three connecting pieces 42 with the three connections 43 located next to one another. Between the connections 43 and the pre-sealing device or the suction pipe device 46a there are an adapter or spacer 44, which can be connected to the connections 43 of the connecting piece 42, and a seal 45. For fastening purposes, the compression device 46b has two lateral projections 30, which engage in the two elements 49 of the holder. The compression device 46b can be connected to the middle connection 43, the lateral connections 43 then being closed by plates 48.

FIG. 4 shows a section AA through the multiple nozzle connection 29 with a connected suction device according to FIG. 2. The compression device 46b and the suction pipe device 46a can be pivoted about the axis mentioned and can thus be detachably connected to the connecting piece 42 by a rotary or tilting movement be attached. Divided by two

CH 714 068 A1

Latches 52, the suction device 46a can assume two positions, wherein in an upper position the suction pipes 47 are aligned at right angles to the suction channel or in alignment with the multiple nozzle connection and in a lower position the suction pipes 47 are slightly inclined downwards compared to the upper position ( not shown).

The embodiment according to the invention is advantageous because the machine can be easily converted. The invention also relates to a method for releasably fastening the compression device 46b or the suction pipe device 46a to the multiple nozzle connection 29 of a textile machine, in particular a ring spinning machine.

Reference symbol list [0035]

spinning unit

Drawing unit

Input lower roll

Input upper roll

4a axis

Medium roller

Means top roll

6a axis

Bottom rollers

7a axis

Output top roll

8a axis

spring element

pressure arm

roving

Strappy

Strappy

suction zone

axis

suction zone

suction drum

pinch roller

Axis of the pinch rollers 18

Guide slot / Storage

pressure arm

compression spring

screw

leaf spring

web

Vacuum source

CH 714 068 A1

suction

management

coupling member

emphasis

suction

yarn

ring

ring rotor

Kops

Kitchen sink

thread guides

ring frame

openings

Friction wheel, drive wheel

supporting member

spigot

connection

spacer

poetry

46a suction pipe device

46b compression device

suction tube

plate

Holding element round connecting element

retaining profile

locking lugs

Claims (15)

claims 1. Multiple nozzle connection (29) connectable to a suction channel (27) of a textile machine, in particular a ring spinning machine, comprising a connecting piece (42) for alternatively connecting a compression device (46b) or a suction pipe device (46a) with at least one suction pipe (47) to the suction channel (27) of the textile machine, the connecting piece (42) having three connections (43) and, depending on a connected compression device (46b) or an extraction pipe device (46a), at least one connection (43) being closed. 2. Multiple nozzle connection (29) according to claim 1, characterized in that the connecting piece (42) has three side-by-side connections (43), the compression device (46b) being connectable to the central connection (43), the side connections (43 ) are closed, and wherein the suction pipe device (46a) has two suction pipes (47) and can be connected to the lateral connections (43) and the middle connection (43) is closed. CH 714 068 A1 3. Multiple nozzle connection (29) according to one of claims 1 or 2, characterized in that the suction pipe device (46a) can assume two different positions, wherein in a first position the suction pipe (s) (47) are aligned with the multiple nozzle connection are and in a second position the suction tube (s) (47) are inclined in comparison with the upper position. 4. Multiple nozzle connection (29) according to one of claims 1 to 3, characterized in that a spacer (44) and a seal (45) are present between the connection piece (42) and the compression device (46b) or the suction device (46a). 5. Multiple nozzle connection (29) according to one of claims 1 to 4, characterized in that the compression device (46b) and the suction pipe device (46a) by a holder of the multiple nozzle connection (29) are releasably and pivotably held about an axis, which holder from two spaced holding elements (49), the compression device (46b) having two lateral projections (30) and the suction pipe device (46a) having a central connecting element (50) for releasable connection to the spaced holding elements (49). 6. Multiple nozzle connection (29) according to the preceding claim, characterized in that the holding elements (49) on a holding profile (51) of the textile machine can be fastened. 7. Textile machine, in particular a ring spinning machine, characterized in that it has a multiple nozzle connection (29) according to one of the preceding claims for the alternative connection of a compression device (46b) or a suction pipe device (46a), which comprises at least one suction pipe (47), to a suction channel ( 27) of the textile machine. 8. Textile machine according to the preceding claim, characterized in that the multiple nozzle connection (29) has three side-by-side connections (43), the compression device (46b) being connectable to the central connection (43), the side connections (43) being closed and a suction pipe device (46a) has two suction pipes (47) and can be connected to the lateral connections (43) and the middle connection (43) is closed. 9. Textile machine according to one of the preceding claims, characterized in that a compression device (46b) can be connected to the connecting piece (42), comprising - Two suction drums (17), wherein one suction drum (17) can be assigned to a pair of output rollers (7, 8) of a drafting unit (2) of the textile machine, the pair of output rollers (7, 8) comprising an output lower roller (7) and an output top roller (8 ) consists; - The suction drums (17) are rotatably mounted on a shaft fastened to a support element (41) with a bearing; - A suction channel (31) running within the support element (41), - Wherein the suction drums (17) each have a drive element (40), which forms a drive connection in the operating position with the output lower roller (7), and - Where on the support element (41) two clamping rollers (18) are rotatably mounted on a common axis (19) centrally in a bearing (20), each of the clamping rollers (18) forming a clamping line on the outer circumference of one of the two suction drums ( 17) rest under the influence of a spring load, - A suction drum (17) is assigned to the pair of output rollers (7, 8) of a drafting unit (2), - Wherein on the support element (42) two clamping rollers (18) are rotatably mounted on a central axis (19), and - Wherein each of the pinch rollers (18) to form a nip line each rest on the outer circumference of one of the two suction drums (17) under the action of a spring load. 10. Textile machine according to one of the preceding claims, characterized in that a suction pipe device (46a) can be connected to the connecting piece (42), comprising - Two spaced suction pipes (47) which are connected to one another by at least one connecting element (50); and - A central plate (48) with which a middle connection (43) of the connection piece (42) can be closed. 11. Textile machine according to one of the preceding claims, characterized in that the compression device and the suction pipe device (46a) are detachably held by a holder with two holding elements (49) on the multiple nozzle connection (29). 12. Textile machine according to the preceding claim, characterized in that the compression device (46b) or the suction pipe device (46a) are detachably held by the holder, the compression device (46b) two lateral highlights (30) and the suction pipe device (46a) a central one Connection element (50) for connecting to the spaced holding elements (49). 13. Textile machine according to one of claims 11 or 12, characterized in that the compression device (46b) and the suction pipe device (46a) are detachably and pivotably held about an axis by the holder of the multiple nozzle connection (29), which holder consists of two spaced holding elements ( 49) and can be fastened to a holding profile (51), the suction pipe device (46a) being able to assume two different positions. CH 714 068 A1 14. Textile machine according to one of the preceding claims, characterized in that a spacer (44) and a seal (45) are located between the compression device (46b) or the suction pipe device (46a) and a connecting piece (42). 15. A method for operating a textile machine, in particular a ring spinning machine, characterized in that it has a multiple nozzle connection (29) according to one of the preceding claims for the alternative connection of a compression device (46b) or a suction pipe device (46a) to a suction channel (27) of the textile machine, comprising the method step of releasably fastening the compression device or the suction pipe device (46a) to the multiple nozzle connection (29).