EP1344853B1 - Opening roll for an OE spinning device - Google Patents

Abstract

An open-ended textile spinning assembly has an opening cylinder (1) fitted on mountings with a fixture forming a form-fit join with the core. The fixture is a ring with two end-faces and an essentially cylindrical inner surface with radial centring surfaces (150, 160). The cylindrical inner surface (140) has elongated grooves for locking screws (80). The core has a projection forming the interlocking arrangement between the mounting and base.

Description

The present application relates to an opening roller for an open-end spinning device according to the preamble of patent claim 1 and a Bite ring for such an opening roller. Opening rollers are added Open-end spinning devices for processing the fibers to be spun used, which are removed from a sliver. To The sliver is introduced into an opening roller housing, wherein it of an opening roller, which is occupied with teeth or needles, in single fibers is resolved. The opening roller rotates at high speed, whereby the separated fibers via a fiber channel a spin organ be supplied.

The set of an opening roller has on the quality of thread formation crucial Influence, so that in the conversion of a spinning machine on a new source material or a different kind of thread the opening roller or whose set must be replaced. Also for wear reasons It is regularly necessary to replace the clothing. In the prior art, a variety of embodiments of Opening rollers known whose set is interchangeable.

To enable the rotation of the opening roller, this is on a Arranged shaft, which is mounted on a bearing. The opening roller itself consists of several parts, of which mostly only one directly on the shaft, for example, by means of a press fit, is attached.

From DE-OS 25 28 485 it is known in a multi-part opening roller to fix a first part firmly on the shaft while the rest part the opening roller via fastening means on the first part of the opening roller is attached. For this purpose, means are provided which have an axially acting force deform an elastic element, whereby this on the fitting ring presses him and thereby fixed to the opening roller. These are relatively large Forces in the axial direction are required, some of them via special screw connections must be applied. These are the fasteners designed accordingly strong.

From US-P 4,296,527 an embodiment is known in which no ordinary Fastener is used. Here are basic bodies and clothing holder equipped with a thread so that they mutually similar bolt and nut can be fastened together. These Design is costly and requires for the maintenance person Assembly and disassembly a lot of skill and practice.

From CH 661 535 A5 an opening roller is known which shows the To fasten clothing holder without fasteners. For this is this also, like the main body itself, shrunk on the shaft. By But pressing on the shaft results in the disadvantage that an exchange the set is very time consuming and in particular special tools and knowledge required for the maintenance person.

From the patent application DE 2752591 an opening roller is known, in by means of an elastic element (see Figure 3) or other means axial pressure exerted on the fitting ring and thus the ring over Non-positive connection in the circumferential direction rotatably connected to the opening roller is.

From US-PS 5,465,567 is a fitting ring with two frontal axial Stop surfaces and a substantially cylindrical inner surface, the the radial centering is known. The ring collar of the known clothing ring is interrupted at the centering surface by axial grooves, which to allow the inflow of a cleaning air stream. That from the rotating opening roller on the fitting ring transmitting torque is created by the fact that the ring with a certain force clamped between two annular collars on its axial abutment surfaces is.

Another ring gear is known from EP 0747517 A1. This one is as replaceable wear part formed, which between two annular flanges the opening roller can be clamped by means of three fixing screws is. In the event of wear on the clothing, the fitting ring may loosen after loosening the fastening screws and removing an annular flange against a new Gamiturring be replaced. The rotational driving of the fitting ring during operation of the opening roller takes place via the friction to the frontal axial abutment surfaces and thus on the tensile force of the mounting screws.

A fitting ring and an opening roller unit are made of DE 36 45 275 C2 known, wherein the fitting ring a recess as a circumferential Ring groove is formed, the axial length and radial height greater as the corresponding dimensions of an associated projection a main body bearing the fitting ring. This should be a non-contact Assembly assurance are made, which ensures that the Trim ring can be mounted only in a given direction. The the radial centering of the fitting ring on the supporting body serving abutment surface is located outside the area of the recess.

Object of the present invention is to overcome the disadvantages of the prior To avoid technology and to design an opening roller such that the Fasteners only slightly by the assembly of clothing and Main body of the opening roller are charged, in particular by the fact that the forces that result from the dissolution of the sliver on the clothing, not need to be absorbed by the fastener and the torque transmission not exclusively from the clamping forces In addition, being for a flawless Concentration should be taken care of. In addition, a fitting ring is proposed be cooperate with an opening roller according to the invention can.

The present object is achieved by an opening roller with the features of claim 1. With the help of the invention designed opening roller is achieved that the fastening means only have to be used only to the multi-part opening roller to hold together axially. The occurring as a result of the dissolution of the fibers Forces in the circumferential direction of the clothing of the opening roller taken up by the recess according to the invention. this makes possible So a safe carry the set and still a particularly simple and easy design of the fastening means of the opening roller at the same time secure connection. In a favorable embodiment of the invention engages in the recess a projection of the body, since the projection can be particularly easily formed on the body.

In particular, the embodiment of the opening roller according to the Invention also use fasteners that no when attaching can transmit large forces. The fact that the combing out the set acting force is not transmitted to the fastener is, advantageously, for example, clip connections used without any problems with the reliability of the connection consist.

Particularly advantageous is the positive connection by means of a Projection implemented, the form-fitting in the circumferential direction clothing carrier and body connects. A projection has the advantage that he am Basic body can be easily formed by the fact that the Body is an injection molded part and the lead in the production with can be trained. Advantageously, the clothing carrier has a Recess to form the positive connection with the body. In the recess can advantageously engage a projection, In addition, the recess has the advantage that they are made by machining can, whereby, for example, the recess also in a simple manner can be formed on a clothing carrier made of steel. Especially Advantageous development of the invention, the clothing carrier has an im essential cylindrical inner wall on which the recess is formed, particularly advantageous in the region of the edge of the clothing carrier. In a Another favorable embodiment of the invention, the recess in the area formed of the cylindrical lateral surface of the clothing carrier. Preferably also in the area of the edge.

It is particularly favorable to form the recess in the region of the edge, which faces the main body, advantageously directly on the frontal area of the edge. In a particularly advantageous embodiment of the invention the clothing carrier and the clothing holder are integrally formed with each other. Also advantageous is an embodiment in which the clothing carrier and the clothing holder are two separate components, whereby Clothing carrier and clothing holder made of different materials can be. In a particularly favorable development of the invention is the Clothing carrier formed as a ring on which a garnish is arranged. As a result, a simple replacement of the set is possible. About that In addition, a wide variety of material can then be used for the ring be used as well as the most varied garnish can.

In a particularly advantageous embodiment of the invention, the clothing worked out in one piece from the ring, for example by milling, whereby Particularly accurate tooth profiles can be produced. With another favorable configuration of the invention, the set consists of a clothing wire, which is applied to the clothing carrier. At another auspicious design, the garnish consists of needles in the ring in are used in a known manner. Due to the design of the opening roller, in which the base body contains the end face facing away from the bearing can a particularly favorable embodiment of the base body are used, especially with regard to the accessibility of the bearing gap.

In another particularly advantageous embodiment of the invention connects the fastener body and clothing holder axially positive fit with each other, so that the cohesion of the multi-part opening roller in axial direction is secured. This exercises the fastener particularly favorable an axial pressure on the opening roller, so that clothing holder and body as well as the clothing carrier abut each other.

In a particularly favorable development of the invention, the fastening means made of two interacting parts, while a clip connection form. This allows a quick replacement of the clothing carrier be enabled, even without the need for tools.

In a further advantageous embodiment of the invention suggests the clothing holder in the axial direction of a stop of the body. This will be Garniturhalter and base body positioned favorably to each other. In further favorable configuration of the clothing holder is above the clothing carrier on a stop of the body. In this advantageous embodiment So is the position of a clothing holder exactly guaranteed, which is formed integrally with the fitting ring. Further advantageous embodiments The invention are described in the subclaims.

Due to the inventive design, wherein the fitting ring by several continuous over its entire length, the inclusion of mounting screws permitting longitudinal grooves is interrupted, is advantageous ensures that the fitting ring not only between ring flanges clamped, but at the same time guided by the mounting screws themselves becomes. The latter then contribute to a part of the torque of the To transfer opening roller on the ring gear, so that the clamping forces the fastening screws can be reduced. The cylindrical inner surface outside the longitudinal grooves, especially in the area of the axial stop surfaces, then advantageously serves the radial centering of the fitting ring. For reasons of good concentricity are advantageous three longitudinal grooves provided, the width of which expediently at least twice their Depth is. The width of the longitudinal grooves so the diameter of the mounting screws exceed, while the depth of the longitudinal grooves significantly can be smaller. In an advantageous development is in the area everyone axial stop surface each provided a radial centering. The Width of the longitudinal grooves is at least twice their depth.

In the inventive design of the fitting ring according to claim 26 is advantageously achieved that the inner surface of the fitting ring completely can be support-free, so that with regard to the components of the opening roller a relatively large freedom exists. It is useful the annular surface of smaller diameter of the circumferential annular groove as centering form, because it easier to avoid assembly errors to let. For reasons of good concentricity, it is expedient in this case, each end stop surface has an annular groove with a Centering is assigned. Under the term positioning surface "can ever according to embodiment, a centering surface or a driving surface meant in which particular importance is attached to the fact that the ring can not be mounted incorrectly during assembly of the opening roller. In one embodiment, the recess is a circumferential annular groove with cylindrical Ring surfaces, one of which is designed as a centering Positioning surface forms.

In another embodiment of the invention, a plurality of recesses in the form of extending in the radial direction through slots provided lateral boundary surfaces, one of which as the driving surface is formed in the circumferential direction positioning surface. This Positioning surface can after installation, for example, in the Transit slot engaging cam associated with the opening roller. As a result, the clamping ring clamping the fitting ring can be relieved. In the case of this embodiment, it is possible that the radial centering serving centering outside the range of the passage slots is provided.

Due to the inventive design of a fitting ring according to claim 33 is advantageously achieved that the mounting aid serving recess no longer designed as a circumferential annular groove but as a longitudinal groove and on top of that is provided in a centering contact surface. Thereby let the longitudinal grooves in their depth and the projections in their Make heights so that when dispensing with the recesses of the fitting ring neither to center nor to assemble. This can cause incorrect operation be safely prevented during assembly. Further advantageous Embodiments are described in the following subclaims.

Due to the inventive design of a fitting ring according to claim 37 is characterized in that the recess as closed on all sides Through holes are executed, advantageously achieved that the entire Surface of the centering surface on the component bearing the ring gear can rest and is safely centered. In that fastening screws can be inserted through the through holes, these can Screw in the circumferential direction with a portion of the torque transfer. For the sake of a good run three advantageous over provided the circumference distributed through holes. To tilting too avoid, it is also advantageous if the containing the centering surface Ring collar is arranged approximately in the middle of the cylindrical inner surface.

Further advantageous developments are in the following subclaims as well as in the description of the invention.

Figur 1

einen Längsschnitt durch eine Auflösewalze gemäß der Erfindung,

Figur 2

einen Schnitt durch die formschlüssige Verbindung von Grundkörper und Garniturträger,

Figur 3

eine Detailansicht von Vorsprung und Aussparung,

Figur 4

einen Axialschnitt durch eine Auflösewalze mit einem erfindungsgemäßen Garniturring,

Figur 5

einen Schnitt II-II durch die Auflösewalze der Figur 4,

Figur 6

in vergrößerter Darstellung einen Axialschnitt durch eine Auflösewalze mit einem erfindungsgemäßen Garniturring,

Figur 7

einen Ausschnitt aus Figur 6 im Bereich einer als Ringnut ausgebildeten Aussparung an einer axialen Anschlagfläche,

Figur 8

einen Schnitt längs der Schnittfläche III-III der Figur 7,

Figur 9

einen Axialschnitt ähnlich Figur 1 mit einem anders ausgestalteten Gamiturring,

Figur 10

einen Querschnitt V-V der Figur 9,

Figur 11

einen Axialschnitt durch eine Auflösewalze mit einem erfindungsgemäßen Garniturring,

Figur 12

einen Querschnitt durch die Auflösewalze längs II-II der Figur 11

Figur 13

einen Axialschnitt durch eine Auflösewalze mit einem erfindungsgemäßen Gamiturring,

Figur 14

den Schnitt II-II der Figur 13.

In the following the invention will be explained with reference to drawings. Show it:

FIG. 1

a longitudinal section through an opening roller according to the invention,

FIG. 2

a section through the positive connection of body and clothing carrier,

FIG. 3

a detailed view of the projection and the recess,

FIG. 4

an axial section through an opening roller with a fitting ring according to the invention,

FIG. 5

a section II-II through the opening roller of Figure 4,

FIG. 6

in an enlarged view an axial section through an opening roller with a fitting ring according to the invention,

FIG. 7

6 a section of a recess formed as an annular groove on an axial stop surface,

FIG. 8

a section along the sectional surface III-III of Figure 7,

FIG. 9

an axial section similar to Figure 1 with a differently designed Gamiturring,

FIG. 10

a cross section VV of Figure 9,

FIG. 11

an axial section through an opening roller with a fitting ring according to the invention,

FIG. 12

a cross section through the opening roller along II-II of Figure 11

FIG. 13

an axial section through an opening roller with a Gamiturring invention,

FIG. 14

the section II-II of Figure 13.

The longitudinal section of the inventively designed opening roller 1 of Figure 1 shows the structure of the opening roller 1 and their arrangement on the camp 21 for rotatable storage. The opening roller 1 consists of a main body 12, which about his intake 13 on the shaft 2, on the bearing 21 opposite side, is fixed by means of a press fit. The shaft 2 is mounted on not shown bearings, the right of the body 12 located bearing sleeve 210 of the bearing 21 quasi the outer ring of a Rolling and represents not corresponding to the opening roller. 1 rotates.

In addition to the main body 12, the opening roller 1 still consists of the clothing holder 3, by means of fastening means 5, which are designed here as screws are attached to the base body 12. Between the clothing holder 3 and the base body 12 is a ring-shaped clothing carrier 4. The clothing carrier 4 is from one side of the main body 12th acted upon while on the other side, in the axial direction of the bearing 21, from the clothing holder 3, is acted upon.

Trained as a ring 41 clothing carrier 4 strikes with its one edge 46, which faces away from the bearing 21, on the base body 12 at. At its outer periphery 43 carries the ring 41 a set consisting of teeth (see. FIG. 3) or needles (not shown).

According to the invention, the base body 12 has the ring 41 in the circumferential direction a positive connection. In addition has the edge 46 in Area of the cylindrical inner wall 44 has a recess 7, in which a projection 6 of the body 12 engages. Projection 6 and 7 recess result thus viewed in the circumferential direction of the opening roller a form-fitting Connection.

Through this formed by recess 7 and projection 6 form-fitting Connection between the designed as a ring 41 clothing carrier 4 and the base body 12 is achieved that by the dissolution of the sliver resulting acting in the circumferential direction of the clothing carrier 4 Forces can be absorbed, which is not required that the Clothing carrier is clamped axially. An axial pinching of the clothing carrier 4 between base body 12 and clothing holder 3 by frictional engagement the forces acting on the clothing carrier 4, on the other parts of the Opening roller 1, in particular base body 12 and clothing holder 3 to transfer, not necessary.

The invention thus makes it possible that in the attachment of the clothing holder 3 no forces acting in the circumferential direction between the base body 12 and clothing holder 3 must be included. Rather, it is enough when the fastener 5 the clothing holder 3 in the direction of the base body 12 is acted upon by an axially acting force that the Carrying carrier 4 the positive connection with the base body 12th maintains. Conveniently, there are the gaps between the clothing carrier 4 and clothing holder 3 and body 12 closed as much as possible, so that no fibers can penetrate. An axial pressing of the Base 12 on the clothing carrier 4 is not required, as well a pressing of the clothing carrier 4 to the clothing holder. 3

To create defined conditions anyway, is when mounting the Garniturhalters 3 of the clothing carrier 4 axially in the direction of the body 12 pushed so that it receives the projection 6 in its recess 7 and simultaneously abuts axially with its edge 46 on the base body 12. Due to the design of the body with this stop. 8 is a precise positioning of the clothing carrier 4, also in the axial direction considered possible on the base body 12. About the attachment means 5 is the clothing carrier 4 is held on the stop 8, without that in an axial Direction acting bias is given. The form-fitting in the circumferential direction Connection between the base body 12 and the clothing carrier 4 does not require this.

In one embodiment of the fastening means 5 in the form of a screw but also in the embodiment of the fastening means 5 in a different form there is a risk of twisting the clothing holder 3 in proportion to the clothing carrier 4 not, since in the circumferential direction on the clothing holder. 3 practically no forces act. A twisting of the clothing holder 3 is also not possible if this formed integrally with the clothing carrier 4 is. For then it is on the positive connection of the clothing carrier 4, which is designed as well as in the embodiment of Figure 1, a rotation due to the positive connection impossible. Therefore, the fastening means 5 can be designed so that they are straight For this, the clothing holder in the axial direction on the base body is sufficient fix. For the transmission of forces between body and clothing carrier 4 provides the connection via the recess 7 and the projection. 6 So it can also be used advantageously fasteners that can not transmit any circumferential forces.

As already mentioned above, the main body 12 on the receptacle 13 on attached to the shaft 2. In this case, the receptacle 13 with the shaft 2 form a Press connection, so that a secure and firm connection between the Basic body 12 and the shaft 2 is given. The shaft 2 is over the bearing 21 rotatably mounted in bearings. The bearings are in a known manner sealed by means of suitable sealing washers, but care must be taken be worn that the storage as far as possible from the influence of Dirt is shielded. This takes place in the opening roller 1 of Figure 1 through the clothing holder 3, which rests on the base body 12 and a tight connection forms and in that the clothing holder 3 with the bearing sleeve 210 forms a very narrow gap. Nevertheless, it may be necessary be to clean the area of the bearing of penetrated dirt, why after removing the clothing holder 3 and the clothing carrier 4th the gap 22 of the bearing 21 is easily accessible. When removing the clothing holder 3, this, after loosening the fastener 5, in the axial Direction shifted over the bearing 21, as well as the clothing carrier. 4 If necessary, then the clothing carrier 4 can be replaced, by being completely removed together with the clothing holder 3 and a new one is used.

FIG. 3 shows an enlarged detail of FIG. 1 with the FIG Base body 12 with a clothing carrier 4 mounted thereon. On the cylindrical Inner wall 44 of the clothing carrier 4 is the recess 7 of the To see clothing carrier 4, in which the projection 6 of the base body 12 engages. Since the recess 7 in the circumferential direction only slightly larger than that Is projection 6, it forms with the projection 6 in the circumferential direction positive connection between the base body 12 and the Gamiturträger 4. At the same time by the formation of the recess on the clothing carrier 4, which is formed as a clothing ring 41, particularly advantageous achieved that a wrong assembly of the fitting ring 41 on the body is excluded. Namely, the ring 41 so on the base body 12th put on that the recess 7 is not in the direction of the base body 12th shows, the projection 6 can not engage, so that in total the opening roller too wide or even that the fasteners are too short. In both Cases, the opening roller can not be assembled.

When properly mounted, the alignment of the teeth or needles is the Set tuned to the direction of rotation of the opening roller. Such are, for example the teeth of a clothing inclined in the direction of rotation of the opening roller. Are clothing carrier 4 and clothing holder 3 formed in one piece, then is replaced by a corresponding arrangement of recess 7 and projection 6 in relation to the fastening means 5 ensures that the fastening means can be easily installed.

For example, if screws are used, it is achieved that the holes in the main body 12 and clothing holder 3 are in alignment with each other, when the projection 6 is engaged in the recess 7. This will be so advantageous not only a positive connection of the clothing carrier. 4 achieved with the body 12 but also a support of Assembly at the onset of the fastener 5. Advantageously, at a Ring 41 additionally a positive connection between the ring 41 and clothing holder 3 are provided, over which this is then positioned can be that the fastening means in the assembly of the opening roller 1 to come in the right place.

Further, in Figure 3, the stop 8 on the base body 12 can be seen on the strikes the clothing carrier 4 in the axial direction. On the cylindrical Lateral surface 45, the clothing 42 is arranged in the form of a clothing wire and represented by the configuration of two clothing teeth 47. Advantageously, a recess 8 on the frontal region 48 of Edge 46 of the clothing carrier 4 may be formed. This can also be up to the inner wall 44 or lateral surface 45 extend.

Figure 2 shows a partial section through the opening roller of Figure 1 in one Level parallel to the end face 11 of the base body 12, wherein the section is placed by the projection 6. It can be seen that the projection 6 together with the recess 7 in the clothing carrier 4 in the circumferential direction of the Opening roller 1 considered forms a positive connection. Advantageous can be provided on the ring 41 to provide a plurality of recesses 7, which face the same number of protrusions 6 or less. If more than one recess is provided, this can Finding the right position between body 12 and clothing carrier 4 shortened.

Figure 4 shows an enlarged view of an axial section through an opening roller with a fitting ring according to the invention. The opening roller 1 of Figure 4 and 5 includes a fitting ring 20 with a dissolving of spun fiber material serving sawtooth or needle-like garnish 30. This is preferably made of the full material of the fitting ring 20 machined saw teeth. The opening roller 1 contains as another component a wearing the ring 20 Main body 40. During assembly, the fitting ring 20 is between a radially projecting annular flange 50 of the base body 40 and a similar Ring flange 60 of a mounting body 70 clamped. The ring flanges 50 and 60 protrude in the radial direction, the height of the set 30, so that after assembly of the opening roller 1, the set 30 against damage is largely protected. The bracing of the fitting ring 20 serve three trained as clamping screws mounting screws 80, in the base body 40 and the mounting body 70 in later to be described Be screwed manner.

The opening roller 1 also contains in addition to a rotatable shaft 90, on which the base body 40 and the fastening body 70 are centered, nor a stationary bearing housing 10, to which a roller bearing 110 indicated is.

Opening rollers 1 for open-end spinning device are used in a known manner the purpose as fiber sliver supplied fiber material for spinning in Single fibers dissolve, which are then collected in a fiber collecting groove and be spun into a thread there. This process is known in the art, so that it need not be explained here.

The fitting ring 20 has two frontal axial, its clamping serving abutment surfaces 120 and 130, a substantially cylindrical inner surface 140, each in the region of the stop surfaces 120th and 130 centering surfaces 150 and 160 serving as the radial centering has, in the assembly of the opening roller 1 of a corresponding cylindrical Counter surface of the body 40 are assigned to conductively.

Dressing rings 20 are wearing parts, which at certain intervals by new sets of rings 20 must be replaced while the remaining components the opening roller 1 can be maintained in the rule. to Assembly of the Gamiturringe 20 are on the inner surface 140 more preferably three longitudinal grooves 170, 180 and 190 evenly over the circumference the inner surface 140 distributed. In these continuous longitudinal grooves 170, 180th and 190 can then engage the already mentioned fastening screws 80, which is inserted through associated holes of the base body 40 and bolted with associated threads in the mounting body 70 become.

Since it is sufficient if the mounting screws 80 only partially in the Immerse longitudinal grooves 170, 180 and 190, it is expediently provided that the width of the longitudinal grooves 170, 180 and 190 at least twice their Depth is. The width of the longitudinal grooves 170, 180 and 190 is thus larger as the diameter of the mounting screws 80, while the depth of the Longitudinal grooves 170, 180 and 190 can be significantly smaller.

The opening roller according to FIGS. 6-8 contains a sleeve-like fitting ring 20, at which a dissolving of fiber material to be spun serving sawtooth or needle-like clothing 30 is attached. At this Set 30 is preferably made of the full material of Dressings 20 sawtooth saw teeth. The Gar niturring 20 having opening roller 1 contains as further components a main body 40 and a clamping plate 75. During assembly, the Garnitur ring 20 between a radially projecting annular flange 76 of the Main body 40 and a similar annular flange 77 of the clamping plate 75th braced. The annular flanges 76 and 77 protrude in the radial direction of the Height of the set 30, so that after assembly of the opening roller 1 the Set 30 is largely protected against damage. The bracing of the fitting ring 20 is a clamping screw 78, of a the main body 40 and the clamping disk 75 centering shaft 90 was added becomes. The opening roller 1 also contains a stationary Bearing housing 10, of which a rolling bearing 110, 711 is indicated.

The fitting ring 20 has a substantially cylindrical inner surface 712, which is completely support-free and in particular not, such as such as in the prior art, the radial centering of the fitting ring 20th serves. For axial clamping, the fitting ring 20 has two end faces axial abutment surfaces 713 and 714.

According to the invention, each axial stop surface 713 and 714 of the fitting ring 20 interrupted by a circumferential annular groove 715 and 716, whereby the stop surfaces 713 and 714 thus interrupted by a recess are. However, the annular grooves 715 and 716 each contain one so-called positioning surface, which will be described in more detail below becomes. The trained as circumferential annular groove 715, 716 recess includes respective circumferential cylindrical annular surfaces 717 and 718, of which that annular surface 18 with the smaller diameter as centering is trained. In this embodiment, it is thus in the positioning surface around a centering surface. Since now each front stop surface 713, 714 such a centering surface 718 is assigned, can the cylindrical inner surface 712 of the fitting ring 20 completely free of support stay.

Support the designated as centering cylindrical annular surfaces 718 each on a torus 719 of the main body 70 and a Ring bead 720 of the clamping plate 75 from. The ring ridges 719 and 720 of the Opening roller 1 thus center the fitting ring 20 at its cylindrical Ring surfaces 718. As can be seen in particular from Figure 6, have the Ring bulges 719 of the main body 40 and the clamping plate 75 different Strengthen. This means that the same in terms of their dimensions Ring grooves 715 and 716 of the respective annular beads 719 and 720 are filled out differently. Since now the annular surfaces 718 with the smaller diameter is the centering surface of the fitting ring 20 prohibits it is from the outset any sets of rings without such annular grooves 715th and 716 as spare parts and between the annular flanges 76 and 77 clamped, since such improperly manufactured clothing rings itself then on the different outer surface of the annular beads 719 and 720th Do not center anymore. In the following with reference to Figures 9 and 10 to be described opening roller 1 is to avoid repetition, waived a second description, as far as it is opposite Figures 6 to 8 are the same components.

The opening roller 1 according to FIGS. 9 and 10 contains a somewhat different design Garniturring 20 according to the invention, the sliding on a base body 40 of the opening roller 1 is pushed. The clamping of the Garniturrings 20 between its axial abutment surfaces 413 and 414 serve again corresponding, unspecified mating surfaces of Base 40 and the clamping plate 405 and the previously mentioned Clamping screw 78. In this ring 402 is the Centering surface 421 in a partial region of the cylindrical inner surface 712 of the fitting ring 407, wherein the centering surface 421 on a corresponding Counter surface of the body 40 slides. According to FIGS. 9 and 10 only on an axial stop surface 414 recesses provided in their design and function still different compared to the Recesses of Figures 6-8 are.

Referring to Figures 9 and 10 are on the stop surface 414 on the Circumference distributed a total of four passage slots 422 provided, wherein the fitting ring 40 in the region of these passage slots 422 a something having reduced wall thickness. The passage slots 422 are respectively two lateral boundary surfaces 423 and 424, of which the boundary surface 424 is designed as a driving surface, with which the torque transmitted to the ring gear 402 in the circumferential direction A partially transferred. In this embodiment, therefore, the driving surface 424 the required positioning surface.

As can be seen in particular from FIG. 9, the front ends of the Garniturrings 40, in particular in the region of the passage slots 422nd Covered by inner surfaces of annular beads 425 and 426, which on the body 40 and the clamping plate 405 are formed. Around Passage slots 422 are each a cam 427 at the annular bead 426 provided, which engages respectively in the passage slot 422 and at the respective driving surface 424 is applied. However, this cam 427 is dimensioned that in the region of the passage slots 422, the axial stop surface 414 is not affected.

Figure 11 shows an enlarged view of an axial section through an opening roller with a Garniturring invention, Figure 12 is a cross section through the opening roller along the cut surface II-II of FIG. 11. The clothing ring 20 according to the invention comprises a sleeve-like clothing carrier, on which a dissolving of fibrous material to be spun serving sawtooth or needle-like clothing 30 is attached. At this Set 30 is preferably made of the full material of Gear carrier saw teeth cut out by cutting.

The opening ring unit 1 having the fitting ring 20 contains as Another component a clothing ring 20 supporting base body 40th During assembly, the fitting ring 20 is between a radially projecting Ring flange 85 of the main body 40 and a similar annular flange 86 clamped a clamping plate 87. The annular flanges 85 and 86 protrude in the radial direction, the height of the set 30, so that after assembly the opening roller unit 1, the set 30 against damage largely is protected. The clamping of the fitting ring 20 is a clamping screw 88, the one of the base body 40 and the clamping disc 87th centering shaft 89 is received. The opening roller unit 1 is still mounted to a complete opening roller, except the rotatable Shaft 89 and the clamping plate 88 is still a stationary bearing housing 811 has, of which a rolling bearing 812 is indicated.

The fitting ring 20 has substantially a cylindrical inner surface 813, of the part serving as the radial centering bearing surface 814th is formed, and in the assembly of the opening roller of a corresponding cylindrical counter surface 815 of the base body 40 sliding assignable is.

Dressing rings 20 are wearing parts, which at certain intervals by new sets of rings 20 must be replaced while the remaining components the opening roller can be maintained as a rule. In which Endeavors to be replaced sets of rings 20 as simple and inexpensive as possible to customize, the inner surface 813 is often tried completely hollow cylindrical shape without any recess or increase. This may cause the ring gear 20 total in the wrong direction between the annular flanges 85 and 86 can be clamped. Furthermore then missing any centering aids in the circumferential direction, in addition serve to relieve the tensioning pulley 88. Finally, the as radial Centering help serving surface 814 lost so that a neat Concentricity of the fitting ring 20 is no longer guaranteed. It was here noted that opening rollers with speeds up to about 8,000 revolutions can run per minute.

The invention now aims both the opening roller unit 1 and the Gamiturring 20 per se to be designed so that improper installation and a rough run when operating avoided if possible. Out For this reason, on the inner surface 813, and that on the contact surface 814, a plurality, preferably three longitudinal grooves 816, 817 and 818 evenly distributed over the circumference of the inner surface 813. These longitudinal grooves 816, 817 and 818 are then corresponding projections 819, 820 and 821 of Basic body 40 assigned. These projections 819, 820 and 821 are preferably cam-shaped and significantly shorter than the longitudinal grooves 816, 817 and 818.

The mounting can be made even safer when the heights of each Projections 819, 820 and 821 are different, so that the projections 819, 820 and 821 are not mistaken as centering mating surfaces can be used. Alternatively or supportive can Projections 819, 820 and 821 also have a slight conicity. the opposite the longitudinal grooves 816, 817 and 818 may well each Have the same depth, provided that only ensures that the highest projection 819, 820, 821 can still engage in the longitudinal grooves 816, 817, 818. Of course, it is alternatively possible also the longitudinal grooves 816, 817, 818 different deep execute.

The longitudinal grooves 816, 817, 818 thus interrupt the radial centering serving contact surface 814 and exceed its length. they wear to ensure that in the circumferential direction of the fitting ring 20 a centering is possible. It should be noted here that it is quite possible, itself the longitudinal grooves 816, 817, 818 over the entire length of the inner surface 813th of the fitting ring 20 to extend. In a particularly advantageous embodiment The invention is associated with the contact surface 814 Counter surface 850 between the projections 819, 820 and 821 and a the fitting ring 20 axially supporting annular flange 85th So is on each Case ensured that when omitting the longitudinal grooves 816, 817 and 818th the fitting ring 20 either not mounted or not centered can. As a result, improper installation is safely avoided.

Figure 13 shows an enlarged view of an axial section through an opening roller with a Garniturring invention, Figure 14 is a cross section through the opening roller along the sectional surface II - II of Figure 1. A Opening roller 1 of Figures 13 and 14 includes a fitting ring 20 with a sawtooth serving to dissolve fibrous material to be spun or needle-like clothing 30. The opening roller 1 contains as another Component a fitting ring 20 supporting body 40. During assembly is the fitting ring 20 between a radially projecting annular flange 95th the main body 40 and a similar annular flange 96 of a fastening body 97 strained. The annular flanges 95 and 96 protrude in radial Direction the height of the set 30 something, so that after an assembly of the Opening roller 1, the set 30 largely protected against damage is. For clamping the fitting ring 20, three serve as clamping screws trained mounting screws 98, which are in the body 40 and screwed into the mounting body 97 in a manner to be described become. The opening roller 1 also contains in addition to a drivable Shaft 99, on which the base body 40 and the fastening body 97 are centered, still a stationary bearing housing 10, of which a Rolling 911 is indicated.

The fitting ring 20 has two frontal axial, its clamping serving abutment surfaces 912 and 913 is a substantially cylindrical Inner surface 914, from which a collar 915 protrudes. This one owns for radial centering an uninterrupted cylindrical centering 916. The annular collar 915 is approximately in the middle of the inner surface 914 of the Gamiturririg 20 arranged. For mounting the fitting rings 20 are on the collar 915 preferably three recesses in the form of through holes 917, 918 and 919 evenly distributed over the circumference of the annular collar 915 arranged. Through these axial through holes 917, 918 and 919 can then be inserted through the already mentioned fastening screws 98 be that by associated holes of the main body 40 inserted and with associated threads in mounting body 97th be screwed. Since the mounting screws 98 to the walls can create the through holes 917, 918 and 919, is sufficient to clamp the Gamiturring 20 with less tension than usual.

Claims (24)

1. A combing ring for an opening roller of an open-end spinning device, where its outer circumference provides a clothing comprising teeth or needles, arranged with two axial front end stopping surfaces (120, 130; 713, 714) and a substantially cylindrical inner surface (140), partially made a radial centering surface (150, 160; 718, 421), wherein said combing ring (20) comprises at least one projection (6) or one opening (7; 715, 716; 422) adjacent to the stopping surfaces (120, 130; 713, 714), and both stopping surfaces (120, 130; 713, 714) have different forms.
2. A combing ring as in claim 1, comprising three longitudinal grooves (170, 180 190).
3. A combing ring as in claim 1 or 2, wherein the area of each axial stopping surface (120, 130) provides one radial centering surface (150, 160) at a time.
4. A combing ring as in one of the claims 1 to 3, wherein the width of said longitudinal grooves (170, 180, 190) is at least twice their depth.
5. A combing ring as in one of the claims 1 to 4, wherein the opening (715, 716, 422) comprises a location surface (718, 424).
6. A combing ring as in claim 5, wherein the opening is a circulating groove (715, 176) with cylindrical annular surfaces (717, 718) one of which (18) is the location surface (718, 424) forming the centering surface (718, 421).
7. A combing ring as in claim 5 or 6, wherein the annular surface (718) with the shorter diameter is the centering surface.
8. A combing ring as in one or more of the claims 5 to 7, wherein an annular groove (715, 716) comprising a centering surface (718) is assigned to each front end stopping surface (713, 714).
9. A combing ring as in one or more of the claims 5 to 8, wherein multiple radially extending slot―like openings (422) with lateral restraining surfaces (423, 424) are provided, one of which is the location surface forming the entrainment surface in circumferential direction (A).
10. A combing ring as in claim 9, wherein the centering surface (421) used for radial centering is located outside the slot area (422).
11. A combing ring as in claim 9 or 10, wherein the wall thickness in the area of the slots (422) is reduced.
12. A combing ring as in one of the claims 1 to 11, wherein the at least one opening is formed as a longitudinal groove (816, 817, 818) interrupting the bearing surface (814) and exceeding its length, and is provided to support the centering in circumferential direction of the inner surface (813).
13. A combing ring as in claim 12, wherein the at least one longitudinal groove (816, 817, 818) extends over the entire length of the inner surface (813) .
14. A combing ring as in claim 12 or 13, wherein several longitudinal grooves (816, 817, 818) are equally spaced over the circumference of the inner surface (813).
15. A combing ring as in one or several of the claims 12 to 14, wherein the longitudinal grooves (816, 817, 818) are of different depth.
16. A combing ring as in one of the claims 1 to 15, wherein the combing ring (20) comprises at least one projection (6) or one opening (7), producing a positive connection to the base body (12) or the clothing holder (3) during operation of the opening roller.
17. A combing ring as in claim 16, wherein the projection (6) or the opening (7) is made in the cylindrical inner wall (44) of said combing ring (41).
18. A combing ring as in one or several of the claims 16 to 17, wherein the projection (6) or the opening (7) is made at the cylindrical coating surface (45) of said combing ring (41).
19. A combing ring as in one or several of the claims 16 to 18, wherein the projection (6) or the opening (7) is made in the area of the edge (46) of said combing ring (41).
20. A combing ring as in claim 19, wherein the projection (6) or the opening (7) is made in the area of the edge (46) of said combing ring (41), facing towards the base body (12) during operation of the opening roller.
21. A combing ring as in one or several of the previous claims, wherein a fastening means (5) produces a positive axial connection between the base body (12) and the clothing holder (3).
22. A combing ring as in one or several of the previous claims, wherein the fastening means (5) exerts an axial force on the clothing holder (4,41).
23. A combing ring as in one or several of the previous claims, wherein the fastening means (5) consists of two cooperating parts producing a clip-on connection.
24. A combing ring as in one or several of the previous claims, wherein the clothing holder (3) is stopped in axial direction by a stop (8) of the base body (12).

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