EP2455517B1 - Fibre canal insert - Google Patents

Description

The present invention relates to a fiber channel insert which can be inserted into a receiving opening of an opening roller housing of an open-end spinning device. The fiber channel insert in this case has a Faskananalkorpus and contains a portion of a fiber channel. Furthermore, the invention relates to an open-end spinning device with a spinning element and an opening roller housing, in which an opening roller is rotatably arranged. The open-end spinning apparatus further has a fiber channel, which transports the fiber material to be spun from the opening roller to the spinning element, a portion of the fiber channel being provided in a fiber channel insert insertable into a receiving opening of the opening cylinder housing.

In open-end spinning devices, the design of the fiber channels, in particular of the entry region of the fiber channels, is of great importance with regard to the quality of the spun yarn and the spinning stability. By various embodiments of the fiber channel with respect to the cross-sectional shapes, the surface design and the execution of the technologically particularly significant entry region of the fiber channels, it is possible to adapt to various materials to be spun, for example, coarse yarn, fine yarn or synthetics to make.

The DE 44 16 977 A1 describes an open-end spinning device in which the fiber feed channel consists of two sub-channels, wherein the first sub-channel consists of a arranged in a recess of the opening roller housing insert. The insert is interchangeable arranged by means of an elastic retaining element in the opening roller housing. As a result, in the case of wear, this portion of the fiber channel can be easily replaced by a new portion by replacing the insert. In addition, the interchangeability allows an adaptation to different fiber materials. To replace the insert, the dissolving housing must first be folded away from the rotor housing. Subsequently, the insert can be removed in a direction perpendicular to the opening roller axis.

The DE 197 12 881 B4 also shows a fiber feed channel, which is used as an insert replaceable in an opening roller housing. This fiber channel should be designed as a casting, wherein a molded-position fixing device is provided, which is intended to ensure compliance with a predetermined mounting position in the opening roller housing. In this case, the fiber channel insert has the actual fiber channel and the fiber tear-off edge, while the fiber release region is located in the opening cylinder housing.

The FR 2 130 507 A1 shows a fiber channel insert containing a portion of a fiber feed channel and a thread withdrawal channel. The insert also serves the connection between the opening roller or its housing and the spinning device or the housing and is therefore fixed both in the opening roller housing, as well as in the rotor housing. In case of wear of the fiber feed channel therefore always the entire insert must be replaced with the Fadenabzugiskanal . The insertion or removal of the insert can also in the FR 2 130 507 A1 only done after the dissolution housing has been opened.

The object of the present invention is to provide a fiber channel insert which on the one hand allows a simple adaptation to different applications and on the other hand allows a favorable transition from the opening cylinder housing into the fiber channel. Furthermore, a corresponding open-end spinning device is to be created.

The object is solved with the features of the independent claims.

A fiber channel insert, which can be inserted into a receiving opening of an opening roller housing of an open-end spinning device, has a fiber channel body. The fiber channel insert contains a portion of a fiber channel. According to the fiber channel body is oriented with its major axis substantially transverse to a major axis of the fiber channel.

An open-end spinning device has a spinning element and an opening roller housing with an opening roller rotatably disposed therein, which are connected by a fiber channel for transporting the fiber material to be spun. The opening roller housing has a receiving opening into which a fiber channel insert with a fiber channel body can be inserted, which contains a portion of the fiber channel. In the case of the open-end spinning device, the fiber channel body according to the invention extends with its main axis essentially transversely to a main axis of the fiber channel, wherein the fiber channel insert can be inserted substantially parallel to the axis of the opening roller. The receiving opening in the opening roller housing thus extends axially parallel to the opening roller.

In contrast to the prior art fiber channel inserts, which are oriented with their major axis toward the fiber channel and correspondingly insertable in a direction perpendicular to the opening roller axis in the opening cylinder housing, the present invention proposes a fiber channel insert with its major axis transverse, preferably arranged at 90 °, offset to the direction of the fiber channel. The main axis of the fiber channel insert corresponds in the case of a substantially cylindrical or conical geometry to the axis of rotation or, in the case of another geometry, to the direction of the longest dimension.

This staggered arrangement offers the possibility of designing the starting region of the fiber channel and in particular the transition from the opening cylinder housing into the fiber channel in accordance with the requirements of the fiber, since, for example, the fiber channel insert has a large diameter Part or the entire width of the opening roller housing may extend. Also with respect to the transition region to the fiber channel in the circumferential direction of the opening roller, the orientation of the fiber channel insert lying transversely to the fiber channel main axis offers improved possibilities for designing the entry region into the fiber channel. Furthermore, the interchangeability of the fiber channel insert is facilitated because it can be mounted axially parallel to the opening roller axis or dismantled and according to no pivoting of the opening roller housing of the rotor housing is required. The accessibility to the fiber channel insert is thereby improved.

Furthermore, the use according to the invention makes it possible to optimize individual subregions of the fiber channel according to the desired application. The fiber channel insert can contain as subregions, for example, only the fiber removal area or the fiber removal edge or also the two named areas which form the entry area. Furthermore, the fiber channel insert may also contain the beginning region of the actual fiber channel. If the further transport area of the fiber channel is also provided in a replaceable insert, the flexibility is further increased and the matching to individual applications is particularly well possible.

According to an advantageous embodiment of the invention, the fiber channel insert has a stop face, which is oriented substantially parallel to the main axis of the fiber channel and which determines the position of the fiber channel with respect to the axial direction of the opening roller. In an open-end spinning apparatus, the receiving opening has a stop face oriented essentially parallel to the main axis of the fiber channel, wherein the fiber passage can be positioned with respect to the axial direction of the opening roller in cooperation with the stop face of the fiber channel insert. It can thereby ensure the correct position of the fiber channel with respect to the width of the opening roller.

Furthermore, it is advantageous if the stop surface contains at least one positioning device and / or a centering device. By means of the positioning device, the fiber channel insert can be positioned with respect to its angle to the opening roller and on the other hand ensure that caused by a twisted position of the fiber channel insert no unfavorable transition stages from the opening roller housing to the fiber channel use. Likewise, such unfavorable transition stages can be avoided with the centering device. Instead of a centering device on the stop surface, however, a centering over the lateral surface of the fiber channel body is also possible by, for example, a centering diameter is provided. Likewise, the positioning of the fiber channel insert can also take place on arranged on the lateral surface positioning, which cooperate with corresponding positioning of the receiving opening. By forming the positioning means and the centering device on the stop surface, which forms an end face of the cylindrical fiber channel body, a particularly compact design can be achieved, which is also easy to produce.

It is particularly advantageous with respect to the production of the fiber channel insert and the receiving opening and with respect to the assembly, when the fiber channel insert has a substantially cylindrical or conical Faskananalkorpus.

Furthermore, it is advantageous if the fiber channel body has a substantially circular cylindrical area, in particular a foot area, with a groove for a sealing element. The fiber channel can thereby be reliably sealed against the opening cylinder housing. At the same time, depending on the configuration, the circular cylindrical area can be used for mounting and removing the fiber channel insert.

According to an advantageous embodiment of the invention, the fiber channel insert contains only the fiber release region. This can be unfavorable Transitions from the opening cylinder housing into the fiber channel, which could obstruct a stretched orientation of the fibers or cause fiber seizure, are avoided. It is particularly advantageous in this case if the fiber channel insert continues to form part of the circumferential wall of the opening roller in the fiber flow direction before the fiber removal area. The entry area into the fiber channel can thereby be optimized with respect to the fiber flow and the transition can be laid in a non-critical area outside the entrance area.

According to another advantageous embodiment of the invention, the fiber channel insert further contains the fiber release edge. This is often subject to high wear and can be made wear-prone on the insert. It is also advantageous if the fiber channel insert still contains the initial region of the fiber channel, so that an adaptation to different circumstances, for example, by different fiber channel cross sections is possible in this area.

It is particularly advantageous if the fiber channel insert is easily replaceable inserted into the receiving opening of the opening roller housing. An adaptation to different spinning materials as well as a replacement in case of wear is simplified thereby.

According to an advantageous embodiment of the invention, the fiber channel insert on two work areas, each containing at least one fiber removal area. As a result, two different sections of a fiber channel can be arranged in a single insert and an adaptation to the spinning materials without replacement of the fiber channel use only by a corresponding offset or twisted mounting the same fiber channel use accomplished. In this case, it is particularly advantageous if the two working areas are arranged radially offset in the fiber channel body. The fiber channel insert can be inserted in two radially offset positions in the receiving opening. Likewise is However, it is also conceivable axially offset one behind the other to arrange the two work areas, wherein the fiber channel insert rotated by 180 ° in the receiving opening of the opening roller housing is used.

Another advantageous development of the invention provides that the fiber channel insert has a grip area by means of which it can be inserted into the receiving opening and / or removed therefrom. The assembly or disassembly of the fiber channel insert is thereby further facilitated.

Fig. 1

eine Offenendspinnvorrichtung mit einem erfindungsgemäßen Faserkanaleinsatz in einer schematischen Übersichtsdarstellung,

Fig. 2

eine perspektivische Darstellung eines erfindungsgemäßen Faserkanaleinsatzes,

Fig. 3

eine Innenansicht eines Auflösewalzengehäuses, in welches ein erfindungsgemäßer Faserkanaleinsatz eingesetzt ist,

Fig. 4

eine Rückansicht einer erfindungsgemäßen Offenendspinnvorrichtung mit einem Faserkanaleinsatz,

Fig. 5

eine schematische Darstellung eines Faserkanaleinsatzes mit zwei axial versetzt zueinander angeordneten Arbeitsbereichen sowie

Fig. 6

eine schematische Darstellung eines Faserkanaleinsatzes mit zwei radial versetzten Arbeitsbereichen.

Further advantages of the invention will be described with reference to the embodiments illustrated below. Show it:

Fig. 1

an open-end spinning device with a fiber channel insert according to the invention in a schematic overview,

Fig. 2

a perspective view of a fiber channel insert according to the invention,

Fig. 3

an inner view of an opening roller housing, in which a fiber channel insert according to the invention is used,

Fig. 4

a rear view of an open-end spinning device according to the invention with a fiber channel insert,

Fig. 5

a schematic representation of a fiber channel insert with two axially offset from each other working areas and

Fig. 6

a schematic representation of a fiber channel insert with two radially offset working areas.

Fig. 1 shows an open-end spinning device 1 according to the invention with a fiber channel insert 2 according to the invention in a schematic sectional view. The open-end spinning apparatus 1 comprises an opening roller housing 3 with an opening roller 4 rotatably mounted therein and a spinning rotor 5 as a spinning element, which is arranged in a rotor housing 6 subjected to negative pressure. Furthermore, the open-end spinning apparatus 1 includes a fiber channel 9, which transports the fiber material F to be spun from the opening roller 4 to the spinning element 5. The fiber channel 9 includes a transport region 9c, which in the present case is arranged in a manner known per se in a fiber channel component 7 which can be inserted into the opening cylinder housing 3.

According to the present representation, a feed region 9a of the fiber channel 9 is furthermore provided in a channel plate adapter 8 which can be inserted interchangeably into the rotor housing 6, which allows easy adaptation to different spinning conditions or different rotor diameters. However, the feed region 9a can also be fixedly arranged in the rotor housing 6 or the transport region 9 of the fiber channel 9 can also be arranged fixedly in the dissolution housing.

The opening roller 4 is supplied in a known manner, a fiber material F via a feed device 10. By the rotation of the opening roller 4, which is indicated by an arrow, the fibers are combed out of the fiber material F, dissolved into individual fibers and fed to the fiber channel 9. As a result of the negative pressure prevailing in the rotor housing 6, an air flow is produced in the fiber channel 9 which finally effects the transport of the dissolved individual fibers through the fiber channel 9 to the spinning element 5, in which the individual fibers are spun and pulled off in a known manner into a yarn 11.

According to the invention, a fiber channel insert 2 is now provided which can be inserted into a receiving opening 12 of the opening cylinder housing 3 and the contains at least a portion 9b, 13, 14 of the fiber channel 9. In contrast to known embodiments of the prior art, the fiber channel body extends with its major axis HA2 substantially transverse to a major axis HA1 of the fiber channel 9 and thus substantially parallel to an axis AW of the opening roller 4. As shown, the fiber channel body extends with its major axis HA2 is offset by 90 ° from the fiber channel main axis HA1, but the fiber channel body can also hit the fiber channel main axis HA1 at a slight angle.

As shown, the fiber channel insert 2 includes the fiber release region 13, which guides the dissolved fibers into the transport region 9c of the fiber channel 9, and the fiber release edge 14, by means of which the fibers are detached from the opening roller 4. In the present case, the fiber channel insert 2 also contains the initial region 9b of the fiber channel 9. Preferably, the fiber channel insert 2 is light, i. H. without tools, arranged interchangeable in the receiving opening 12 of the opening cylinder housing 3, so that a simple adaptation to different spinning conditions and fiber materials can be done. Likewise, it is also possible to easily replace the fiber channel insert 2 in the event of wear, in particular of the heavily worn fiber removal edge 14. It can thus always be achieved optimum yarn quality without affecting the spinning stability.

The inventive orientation of the fiber channel insert 2 transversely to the fiber channel main axis HA1 a particularly favorable fiber flow can be achieved and the risk of adherence of fibers at transition points 15, 16 and the kinking of fibers are significantly reduced. Like from the Fig. 2 As can be seen, the fiber channel insert 2 extends over almost the entire width of the opening roller 4 and the corresponding portion of the opening roller housing 3, so that, in contrast to known fiber channel inserts 2 of the prior art transition gaps 15 form, which extend transversely to the fiber flow direction. Since the transition column 15 As a result, lie outside the fiber entry region or the fiber removal region 13, the risk of sticking and damage to the fibers is greatly reduced. Another transition gap 16 is formed along the Faserflußrichtung between the fiber channel insert 2 and the opening cylinder housing 3. Since the fiber channel insert 2 extends in contrast to inserts of the prior art over almost the entire width of the inner wall of the opening cylinder housing 3, the transition 16 is outside the fiber flow region , Likewise, the second transition gap 15 between the opening cylinder housing 3 and the fiber channel insert 2 is located outside the fiber flow area with respect to the fiber flow direction. Due to the design with a fiber channel insert offset to the fiber channel main axis HA1, the first transition gap 15 can furthermore be placed in a region far in front of the fiber release region, in which the risk of damage and adhesion of fibers is reduced. With the fiber channel insert 2 according to the invention, the fibers can thus be transported in a particularly gentle manner, whereby optimum adaptation can always be achieved through different configurations of the fiber channel insert 2 with respect to the cross section of the starting region 9b of the fiber channel 9 and the surface finish, and the detachment properties can be influenced.

In the present representation, the fiber channel insert 2 is hereby arranged somewhat laterally offset from the fiber channel component 7, so that a comparatively long fiber detachment region 13 is created and very favorable conditions and a particularly favorable position of the first transition gap 15 in the fiber flow direction are achieved in the entire fiber entry region. Depending on the design, size and arrangement of the fiber channel insert 2 but this can also, as in Fig. 1 shown to be centrally located in direct extension of the fiber channel main axis HA1. By means of the fiber channel insert 2 according to the invention, it is further possible, the initial region 9b of the fiber channel 9 deviating from the remaining fiber channel 9 and dem To design transport area 9c, for example, with a widened or narrowed cross-section.

Fig. 4 shows a rear view of an opening cylinder housing 3, in which in a receiving opening 12 of the fiber channel insert 2 according to the invention is used. The fiber channel insert 2 is in this case mounted substantially axially parallel to the opening roller axis AW (opening roller 4 not shown here) or dismantled, wherein by corresponding centering and positioning devices (s. Fig. 3 ) the fiber channel insert 2 automatically reaches its correct position with respect to the fiber channel component 7. The assembly and disassembly of the fiber channel insert 2 according to the invention is in this case particularly simple, since access to the fiber channel insert 2 is already obtained when folding the entire pivot housing without opening the dissolution housing 3. The assembly and disassembly of the fiber channel insert 2 can in this case take place independently of the fiber channel component 7 and the channel plate adapter 8, so that the alignment of these components to each other and the tightness of the fiber channel thereof is unaffected.

Fig. 3 shows a perspective view of a fiber channel insert 2 according to the invention. The fiber channel insert 2 has a substantially cylindrical Faserkanalkorpus in which present perpendicular to the main axis HA2 of the cylindrical body of the initial region 9b of the fiber channel 9 is introduced. However, the initial region of the fiber channel 9b or the fiber channel 9 may also be arranged at an angle to the main axis HA2. The fiber channel insert 2 further contains the fiber removal region 13 and the technologically significant fiber removal edge 14. Due to the length of the cylindrical body, which extends over almost the entire width of the inner wall of the opening cylinder housing 3, in the fiber channel insert 2 according to the invention a plurality of variations in expansion, Arrangement and geometry of the fiber entry region and the initial region 9b possible. So can different cross-sectional shapes, constrictions or extensions be easily displayed in this area. It is particularly advantageous in the embodiment shown that the fiber channel insert 2 has the complete fiber detachment region 13, so that it does not contain any transitions unfavorable to the fiber flow.

In order to achieve a correct positioning of the fiber channel insert 2 in the opening roller housing 3, the fiber channel insert 2 has a centering device 17 and two positioning devices 18. However, the centering can also take place over the outer diameter of the body of the fiber channel insert 2. Likewise, the positioning can also be effected by a projection attached to the lateral surface of the fiber channel body, which projection cooperates with a corresponding groove on the opening roller housing 3 in the region of the receiving opening 12. The centering and positioning axes are in this case also transversely, in this case arranged offset by 90 ° to the fiber channel main axis HA1 corresponding to the main extension of the fiber channel insert 2. In the present case, the centering device 17 and the positioning devices 18 are provided on a stop surface 22 extending essentially parallel to the main axis HA1 of the fiber channel 9. The stop surface 22 acts together with a stop surface of the opening roller housing 3, not shown, and thereby determines the position of the fiber channel insert 2 in the axial direction of the opening roller.

In the example shown, the fiber channel insert 2 further comprises a circular cylindrical portion 19, which contains a groove 20 for a sealing element, not shown here. The opening roller housing 3 can be sealed by means of the sealing element to prevent the inflow of false air. Furthermore, a grip region 21 is provided on the circular-cylindrical region or in the present case at the rear end of the fiber channel insert 2, by means of which the fiber channel insert 2 can be easily removed from the receiving opening 12. Likewise, however, only the circular cylindrical portion 19 may be provided as a grip area.

Fig. 5 shows a development of the invention, in which the fiber channel insert 2 has a second work area A ', which contains at least one second fiber removal area 13'. In the example shown, the two working areas A and A 'are arranged one behind the other with respect to the longitudinal direction of the body of the fiber channel insert. The fiber channel insert 2 is in this case also rotated by 180 ° in the receiving opening 12 of the opening roller housing 3 used. This makes it possible to provide two different sections 9b, 13, 14 of a fiber channel 9 in a single fiber channel insert 2, which are applicable without changing the insert.

Fig. 6 shows a schematic sectional view of a fiber channel insert 2, in which two working areas A and A 'in succession, based on the circumferential direction of the fiber channel insert 2, are provided. As a result, as in the example described above Fig. 5 a smooth change between two different applications without a change of the fiber channel insert 2 allows.

With the fiber channel insert 2 according to the invention, in addition to facilitated assembly and disassembly as well as improvements with regard to the fiber flow, a much higher flexibility with regard to the applications is thus possible. Thus, various fiber entry regions can be provided in which the radius or the position of the fiber removal edge 14 is changed or the fiber removal region 13 is adapted in its execution to the fiber material FM to be spinned, the spinning conditions and the fiber throughput. Likewise, different fiber channel cross sections can be realized with certain constrictions or extensions in the initial region 9b.

The invention is not limited to the illustrated embodiments. Thus, a fiber channel insert 2 is conceivable, which contains only the fiber removal region 13, while the fiber removal edge 14 in the opening cylinder housing 3 or in a likewise executed as an insert Fiber channel component 7 is arranged. Due to the simple interchangeability, however, it is advantageous to arrange the fiber removal edge 14, which is usually subjected to heavy wear, to the easily exchangeable fiber channel insert 2. Further modifications are possible.

LIST OF REFERENCE NUMBERS

1

open-end

2

Fiber channel insert

3

Opening roller housing

4

opening roller

5

spinning rotor

6

rotor housing

7

Fiber channel component

8th

Channel plate adapter

9

fiber channel

9a

feeding

9b

initial region

9c

transport sector

10

feeder

11

yarn

12

receiving opening

13

transfer area

14

removal edge

15

Transition gap transverse to the fiber flow direction

16

Transition in fiber flow direction

17

centering

18

positioning

19

circular cylindrical area

20

groove

21

grip area

22

stop surface

HA1

Main axis of the fiber channel body

HA2

Main axis of the fiber channel insert

F

fiber material

AW

Opening cylinder axis

A

Workspace

Claims (13)

1. Fibre channel insert (2) which is insertable into the mounting opening (12) of an opening roller housing (3) of an open-end spinning arrangement (1), wherein the fibre channel insert (2) comprises a fibre channel body and contains a section of a fibre channel (9), characterized in that the fibre channel body with its major axis (HA2) extends primarily transversely to the major axis (HA1) of the fibre channel (9) and that the fibre channel insert (2) is insertable into the mounting opening (12) primarily axially parallel to the axis of the opening roller (AW).
2. Fibre channel insert according to the previous claim, characterized in that the fibre channel insert (2) comprises a supporting surface (22) which is primarily orientated parallel to the major axis (HA1) of the fibre channel (9) and which determines the position of the fibre channel (9) in relation to the axial direction of the opening roller (4).
3. Fibre channel insert according to any of the previous claims, characterized in that the supporting surface (22) comprises at least one positioning device (18) and/or a centering device (17).
4. Fibre channel insert according to any one of the previous claims, characterized in that the fibre channel insert (2) comprises a primarily cylindrical or conical fibre channel body.
5. Fibre channel insert according to any one of the previous claims, characterized in that the fibre channel body comprises a primarily circular cylindrical section (19), in particular a base part, which preferably comprises a groove (20) for a sealing element.
6. Fibre channel insert according to any one of the previous claims, characterized in that the fibre channel insert (2) comprises just one fibre releasing area (13) of the fibre channel (9).
7. Fibre channel insert according to any one of the previous claims, characterized in that the fibre channel insert (2) comprises the fibre releasing area (13) and a fibre releasing edge (14).
8. Fibre channel insert according to any one of the previous claims, characterized in that the fibre channel insert (2) is insertable in the mounting opening (12) of the opening roller housing (3) in a way which enables easy exchange of the fibre channel insert (2).
9. Fibre channel insert according to any one of the previous claims, characterized in that the fibre channel insert (2) comprises two effective areas (A, A'), both of which comprise a fibre releasing area (13, 13').
10. Fibre channel insert according to any one of the previous claims, characterized in that both effective areas (A, A') arranged radially staggered on the fibre channel body and in that the fibre channel insert (2) is insertable in two radially staggered positions in the opening mounting (12) of the opening roller housing (3).
11. Fibre channel insert according to any one of the previous claims, characterized in that the fibre channel insert (2) comprises a hand grip area (21), by means of which said fibre channel insert (2) is insertable into and removable from the mounting opening (12).
12. An open-end spinning arrangement (1) comprising a spinning element (5) and an opening roller housing (3), in which an opening roller (4) is arranged in a rotatable way, also comprising a fibre channel (9), which transports the fibre material (F) to be spun from the opening roller (4) to the spinning element (5), wherein a section of the fibre channel is provided in a fibre channel insert which is (2) insertable in a mounting opening (12) of the opening roller housing (3), which fibre channel insert (2) comprises a fibre channel body, characterized in that the fibre channel body extends with its major axis (HA2) primarily perpendicular to a major axis (HA1) of the fibre channel (9) and in that the fibre channel insert (2) is insertable primarily axially parallel to the opening roller axis (AW).
13. Open-end spinning arrangement according to the previous claim, characterized in that the mounting opening (12) comprises a supporting surface orientated primarily parallel to the major axis (HA1) of the fibre channel (9), said supporting surface interacting with a supporting surface of the fibre channel insert (22) and determining the position of the fibre channel insert (2) in relation to the axial direction of the opening roller (4).

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