• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a twist stop roll for guiding a thread with a rotationally symmetrical ceramic body having on an outer circumference two groups of a plurality of radially outstanding guide teeth to form a zigzag-shaped thread running track. The ceramic body is fixed via a retaining bush and rotatably guided. In order to enable the most unbreakable clamping of the ceramic body, according to the invention, the retaining bush formed from an inner bearing sleeve and an outer clamping sleeve, which are connected coaxially to each other via a radial retaining web or a plurality of radial retaining webs.
    公开号:AT510668A2
    申请号:T1611/2011
    申请日:2011-11-02
    公开日:2012-05-15
    发明作者:Wolfgang Raeder；Alfred Sommerfeld
    申请人:Oerlikon Textile Components；
    IPC主号:
    专利说明:

    ···· * ··% P43932
    Twist stopping roller
    The invention relates to a swirl stop roller for guiding a thread according to the preamble of claim 1.
    In textile processes for the production, processing and treatment of threads, it is generally known to limit a twisting or a twisting of the thread in its propagation by a so-called twist stop. Thus, for example, in a false twist texturing process, the texturing zone in which a wrongly twisted yarn is thermally treated and fixed for texturing is limited by a swirl stop roll.
    Such a swirl stop roll is known, for example, from DE 10 2005 029 400 A1. In the known spin-stop roller, the thread is guided in a zig-zag-shaped thread running track, which is embedded on the circumference of a rotationally symmetrical ceramic body. For this purpose, the ceramic body is formed from two ceramic discs, which have equally spaced guide teeth on opposite end faces on the circumference and which are guided overlapping on a centering diameter by a retaining bushing. For fixing the ceramic discs are assigned to both outer end faces supporting elements which are screwed together via a plurality of screws. For storage of the ceramic discs, the retaining sleeve is rotatably connected to a rotatably mounted shaft.
    In the known spin-stop roll, it is disadvantageous that the ceramic body or the ceramic disks forming the ceramic body are held by a screw connection. Since the ceramic is a particularly brittle material, uniformities in the fastening and the stressing of the ceramic body very quickly lead to a fracture on the ceramic body. Therefore, when using glands, these must be made with the utmost care and uniformity. Due to the hardly achievable uniform tightening of the screws is to be expected in these solutions always with a high axial impact of the ceramic discs.
    It is therefore an object of the invention to develop a spin stop roll of the generic type such that the ceramic body is fixed as shatterproof as possible on a retaining bush.
    Another object of the invention is to provide a swirl stop roll of the type mentioned, in which the ceramic body is easily mounted and dismounted.
    It is also an object of the invention to improve a swirl stop roll of the generic type in the running behavior such that uniform process conditions prevail during operation.
    The object of the invention is achieved in that the retaining sleeve is formed of an inner bearing sleeve and an outer clamping sleeve, which are connected via a radial retaining web or a plurality of radial retaining webs coaxially with each other.
    Advantageous developments of the invention are defined by the features and feature skombinen the respective subclaims.
    The invention is characterized in that for Drehfuhrung and for fixing the ceramic body, the retaining sleeve has separate sleeve parts. The necessary for the attachment of the ceramic body design of the clamping sleeve - 2 -
    It is possible to carry out the bearing sleeve independently of a bearing or rotary guide. The outer clamping sleeve and the inner bearing sleeve are rotatably connected to each other via at least one radial retaining web, wherein the clamping sleeve, the retaining web and the bearing sleeve are preferably formed in one piece. In order to be able to form elastic clamping regions, in particular in the area of the winding tubes, the connection between the bearing sleeve and the clamping sleeve is preferably carried out by a plurality of radial retaining webs which are distributed uniformly around the circumference of the sleeves.
    In order to enable a possible backlash-free recording of the ceramic body, the development of the invention is preferably ausgefuhrt, in which the clamping sleeve distributed around the circumference a plurality of axially aligned and elastically deformable in the radial direction clamping straps, which rest with a plurality of clamping surfaces on a centering diameter of the ceramic body. This can be realized advantageously a backlash-free axial clamping of the ceramic body, wherein an elastic deformability of the clamping surfaces for the corresponding compensation over the circumference of the centering diameter provides. The number of clamping tabs formed distributed on the circumference of the clamping sleeve lead to a radial support of the ceramic yarn guide at a plurality of supporting points.
    For the axial fixation of the ceramic body, the clamping straps preferably have at one end of the clamping surface a fixing collar, which bears against an end face of the ceramic body. This facilitates in particular the assembly of such a ceramic body on the circumference of the winding tube, in which the ceramic body is slipped over its centering diameter on the clamping strap and pushed to Fixierkragen.
    A particularly advantageous development of the invention is given by the fact that the clamping sleeve distributed on the circumference carries a plurality of flexible retaining tabs with a plurality of retaining collar, which in the radial direction from a holding position into a -.
    »· I t t t t t t t t t t t t t t t t
    Mounting position are navigable and rest with their retaining collar in the holding position on a side opposite to the clamping collar end faces of the ceramic body. Thus, an axial fixation of the ceramic body at both ends by the clamping sleeve is possible. By special design of Fixierkra-5 gene and the retaining collar and tolerances of the ceramic body in the axial direction could be compensated elastically.
    The radial and the axial fixation of the ceramic body can be further improved in which according to an advantageous embodiment of the invention 10, the clamping sleeve between the clamping straps and the retaining tabs several incisions and that between the clamping sleeve and the bearing sleeve, a locking sleeve is inserted, which several in the incisions of the clamping sleeve engaging support webs, which bear against the centering diameter of the ceramic body. Thus, an additional support of the ceramic body is achieved in the radial direction.
    The axial fixation of the ceramic body is particularly improved in that the locking sleeve has a circumferential fixing ring, which is associated with the retaining tabs for fixing the holding position. Thus, an unwanted 20 deformation of the retaining tabs is no longer possible, so that even unwanted removal of the ceramic body is impossible by the clamping sleeve by external influence.
    Depending on the bearing or Drehfuhrung the bearing sleeve against-25 on the clamping sleeve have an equal or larger sleeve width.
    In this case, in particular, the variant of the invention has proven in which the bearing sleeves, the clamping sleeve and the or the holding webs are formed from a plastic molding and in which the bearing sleeve is positively connected to a rolling bearing 30 inside. Thus, such KunststoffFormtei- -4 - ·· * ····· le directly be formed shortly after shaping as a sheathing of a rolling bearing. Thus, the swirl-stop roll according to the invention can be formed by joining only a few parts together.
    For thread guidance of the thread running track formed in the scope of the swirl stop roll, in particular the development of the invention has been proven in which the ceramic body is formed of two ceramic discs which alternately have a plurality of recesses and a plurality of axial tabs with the outstanding guide teeth on one end side, which engage with each other. This makes it possible to produce a high surface quality, in particular on the surfaces required for thread guidance in the thread running track.
    To avoid entanglements of the filaments of the thread in the groove bottom of Fadenlauspur the development of the invention is particularly advantageous in which the Axiallaschen both ceramic discs each have at the foot of Führungsza-cken a raised guide bar, which together with the guide teeth form the thread running track, so only the guide webs of the two ceramic discs formed directly at the foot of the guide teeth are used alternately for thread guidance. The thread is kept within the thread running track so far from a parting line between the ceramic discs.
    For rotational transmission is also provided that the ceramic body has at least one radially inwardly projecting cam on the circumference, which engages in a cam recess on the circumference of the clamping sleeve. For a rotationally secure fixation is possible even at low clamping forces.
    The invention will be explained in more detail with reference to several exemplary embodiments of the twist stop roll according to the invention with reference to the attached figures. - 5 - h «« · «« «« «4
    • * I • · · «« * * «f» · · · * ♦ · Φ
    They show:
    1 schematically shows a cross-sectional view of a first embodiment of the spiral stop roll according to the invention; FIG. 2 shows schematically a side view of the embodiment from FIG. 1; FIG. 3 schematically shows a further side view of the embodiment from FIG
    4 shows schematically a cross-sectional view of a further exemplary embodiment of the swirl stop roller according to the invention, FIG. 5 shows a schematic side view of the exemplary embodiment from FIG. 4
    1, 2 and 3, a first embodiment of the twist stop roll according to the invention is shown schematically in several views. In Fig. 1, the exemplary embodiment in a cross-sectional view and in FIGS. 2 and 3 is shown schematically in a respective side view. Unless expressly made to any of the figures, the following description applies to all figures.
    The exemplary embodiment of the swirl stop roller has a rotationally symmetrical ceramic body 1, which is formed by two ceramic disks 2. 1 and 2. 2 together. At the facing end faces of the ceramic discs 2.1 and 2.2 distributed around the circumference a plurality of radially outstanding guide teeth 4.1 and 4.2 are arranged. At the foot of the guide teeth 4.1 and 4.2 have the ceramic discs 2.1 and 2.2 axially outstanding axial tabs 3.1 and 3.2, which each form a guide web 5.1 and 5.2 on their outer surfaces.
    In Fig. 1, a cross-sectional view of the ceramic disc 2.1 is shown in the upper half of the figure. One of the guide prongs 4.1 is shown with the axial lug 3.1 and the guide web 5.1. The axial lug 3.1 of the ceramic disk 2.1 -6- «« · * *! »· I» »overlaps into a corresponding recess 27.2 of the ceramic disc 2.2.
    In the lower half of FIG. 1, a cross-sectional view of the ceramic disc 2.2 is shown having the guide teeth 4.2 with the axial tabs 3.2 and the guide webs 5.2. The Axiallaschen 3.2 of the ceramic discs 2.2 accordingly cooperate with recesses 27.1 in the ceramic disc 2.1, so that the mutually opposite guide teeth 4.1 and 4.2 and formed at the foot of the guide prongs 4.1 and 4.2 guide webs 5.1 and 5.2 a circumferential zigzag-shaped thread running track 20th to guide a thread.
    The ceramic discs 2.1 and 2.2 are arranged together on a retaining bush 10. The retaining sleeve 10 is for this purpose formed of an outer clamping sleeve 11 and an inner bearing sleeve 13, which are connected via a plurality of retaining webs 12 coaxially with each other. The clamping sleeve 11, the bearing sleeve 13 and the retaining webs 12 are preferably integrally formed and manufactured as a plastic molding.
    The clamping sleeve 11 is distributed over the circumference formed in a plurality of axially aligned clamping tabs 15 and retaining tabs 18, wherein between the clamping tabs 15 and the retaining tabs 18 each have a cut 23 is provided. The notches 23 extend over a partial width of the clamping sleeve 11, so that the clamping tabs 15 and the retaining tabs 18 are held together by a formed on an end face of the clamping sleeve 11 closed ring. The clamping straps 15 and the retaining tabs 18 thus each have a free end, which form a mounting side 8 of the clamping sleeve 11. The mounting side 8 of the clamping sleeve 11 is shown in the side view of Fig. 3.
    The opposite side of the clamping sleeve 11 is referred to in this exemplary embodiment as a stop side 9, which is shown in the illustration of FIG. -7- ·· «· · * ν»
    For further explanation of the clamping straps 15, reference is made to the upper half of the illustration in FIG. Here, the clamping sleeve is shown in the region of a clamping strap 15 in a cross-sectional view. The clamping strap 15 is axially aligned and has an outer clamping surface 16. At the clamping surface 16, the ceramic discs 2.1 and 2.2 are held without play, each with a centering 6.1 and 6.2. For this purpose, the clamping surface 16 is elastically formed on the clamping strap 15.
    On the mounting side 8 of the clamping sleeve 11, the clamping plates 15 each have a chamfer to allow sliding of the ceramic discs 2.1 and 2.2.
    On the opposite abutment side 9 of the clamping sleeve 11, the clamping straps 15 each have a clamping collar 17 which engages radially auftagend in a fixing recess 7.1 of the ceramic disc 2.1.
    As shown in Fig. 2, the clamping sleeve 11 has a total of four circumferentially spaced clamping straps 15. Thus, four distributed on the circumference arranged clamping collar 17 act on the ceramic disc 2.1 a.
    From the representation in FIG. 2, it is furthermore apparent that the ceramic disk 2.1 has two in each case an inwardly projecting cam 21 at two positions arranged offset by 180 °. The cam 21 acts to prevent rotation of the ceramic discs 2.1 and 2.2 in a corresponding cam recess 22 on the circumference of the clamping sleeve eleventh
    For further explanation of the clamping sleeve 11, reference is made to the illustrations in Fig. 1 and 3. In the lower half of the cross-sectional view of Fig. 1, a retaining tab 18 in the clamping sleeve 11 is shown in cross section. The halves - 8 -
    telasche 18 has on the mounting side 8 of the clamping sleeve 11 on a retaining collar 19, the retaining tab 18 is formed so flexible in the radial direction that can be converted by deformation of the retaining collar 19 from a holding position shown in a mounting position. The mounting position of the retaining collar 19 is selected such that the outer diameter of the retaining collar 19 corresponds approximately to the size of the centering diameter 6.1 and 6.2 of the ceramic discs 2.1 and 2.2. In the holding position, the retaining tabs 18 abut with their retaining collar 19 in a fixing recess 7.2 of the ceramic disc 2.2. Thus, an axial fixation of the two ceramic discs 2.1 and 2.2 on the circumference of the clamping sleeve 11 is ensured by the clamping collar 17 of the clamping straps 15 and by the retaining collar 19 of the retaining tabs 18.
    As is apparent from the illustration in Fig. 3, the clamping sleeve 11 a total of four retaining tabs 15 evenly distributed on the circumference, which act with their retaining collar 19 on the front side of the ceramic discs 2.1.
    As is apparent from the illustration in FIGS. 1 to 3, the clamping sleeve 11 is connected via a plurality of radial retaining webs 12 with the inner bearing sleeve 13. The bearing sleeve 13 is formed substantially as a closed ring, which surrounds a roller bearing 14. The roller bearing 14 is preferably embedded in the bearing sleeve 13 and rotatably coupled via an outer bearing ring with the bearing sleeve 13. In that regard, a direct recording and storage on the roller bearing 14 is possible.
    FIGS. 4 and 5 show a further exemplary embodiment of the swirl-stop roller according to the invention, in which, in particular, the radial and axial fixation of the ceramic disks 2.1 and 2.2 is further improved. The exemplary embodiment shown is essentially identical to the aforementioned embodiment according to FIGS. 1 to 3, so that only the differences are subsequently explained, and otherwise reference is made to the above-mentioned description ,
    In the exemplary embodiment illustrated in FIGS. 4 and 5, an additional locking sleeve 24 is inserted in the intermediate space between the clamping sleeve 11 and the bearing sleeve 13 from the mounting side 8 between the clamping sleeve 11 and the bearing sleeve 13. The locking sleeve 24 has in the region of the cuts 23 of the clamping sleeve 11 each have a support web 25 which extends between the bearing sleeve 13 and the Zentrierdurchmessem 6.1 and 6.2 of the ceramic discs 2.1 10 and 2.2. In that regard, an additional radial support of the ceramic discs 2.1 and 2.2 is generated via the support webs 25 of the locking sleeve 24.
    In addition, the locking sleeve 24 has a circumferential fixing ring 26 which extends in the space between the bearing sleeve 13 and the free ends of the 15 Elaltelaschen. For a flexible deformation of the retaining tabs 18 is no longer possible. The axial fixation of the ceramic discs 2.1 and 2.2 generated via the retaining collar 19 is secured via the fixing ring 26 of the locking sleeve 24. In the embodiment shown in Fig. 4 and 5, the bearing sleeve 13 is designed with a larger sleeve width compared to the clamping sleeve 11. Here, a rolling bearing is held in the interior of the bearing sleeve 13, which has, for example, a plurality of juxtaposed rolling elements. Thus, for example, a double-row roller bearing advantageous in the bearing sleeve 13 of the La-25 gerbuchse 10 integrate.
    The embodiments of the swirl stop roller shown in FIGS. 1 to 5 are exemplary in the structural design. Basically, incisions or recesses or other constructive changes can be made on the tensioning straps or on the retaining straps in order to favor in particular the flexibility and the elasticity of the respective straps. Likewise, the embodiment of the ceramic body with two ceramic discs is exemplary. Basically, one-piece or multi-part ceramic body can be performed on a holding bush formed in this way. - 11 -
    Reference numerals l ceramic body 2.1,2.2 ceramic discs 3.1, 3.2 axial tabs 4.1,4.2 guide teeth 5.1, 5.2 guide bar 6.1,6.2 centering 7.1, 7.2 Fixierausnehmung 8 mounting side 9 stop side 10 retaining sleeve 11 clamping sleeve 12 retaining bar 13 bearing sleeve 14 rolling bearing 15 clamping strap 16 clamping surface 17 clamping collar 18 retaining tab 19 Retaining collar 20 thread running track 21 cam 22 No cken recess 23 cuts 24 locking sleeve 25 support bar 26 fixing ring 27.1,27.2 recess - 12 -
    权利要求:
    Claims (11)
    [1]
    P43932 * * * • II Claims 1. A swirl stop roll for guiding a yarn with a rotationally symmetrical ceramic body (1), on an outer circumference, two groups of a plurality of radially outstanding guide teeth (4.1, 4.2) to form a zigzag threadline track (20 ), and with a retaining bush (10) for receiving the ceramic body (1), wherein the ceramic body (1) rotatably connected to the retaining bush (10) and wherein the ceramic body (1) via the retaining bush (10) is rotatably guided, characterized in that the retaining bush (10) of an inner bearing sleeve (13) and an outer clamping sleeve (11) is formed, which are connected via a radial retaining web (12) or a plurality of radial retaining webs (12) coaxially with each other.
    [2]
    2. swirl stop roller according to claim 1, characterized in that the clamping sleeve (11) distributed on the circumference supports a plurality of axially aligned and elastically deformable in the radial direction clamping straps (15), with a plurality of clamping surfaces (16) at a centering diameter (6.1) of the ceramic body ( 1) lie,
    [3]
    3. swirl stop roller according to claim 2, characterized in that the clamping straps (15) each have at one end of the clamping surface (16) a clamping collar (17), which bear against an end face of the ceramic body (1). -13 -
    [4]
    4. swirl stop roller according to claim 2 or 3, characterized in that the clamping sleeve (11) distributed on the periphery a plurality of flexible retaining tabs (18) with a plurality of retaining collar (19) carries, which are in the radial direction from a holding position into an assembly position and with rest their retaining collar (19) in the holding position on an opposite to the clamping collar (17) end face of the ceramic body (1).
    [5]
    5. swirl stop roller according to one of claims 1 to 4, characterized in that the clamping sleeve (11) between the clamping straps (15) and the retaining tabs (18) has a plurality of cuts (23) and that between the clamping sleeve (11) and the bearing sleeve ( 13) a locking sleeve (24) is arranged, which several in the incisions (23) of the clamping sleeve (11) engaging support webs (25) which abut the centering diameter (6.1) of the ceramic body (1).
    [6]
    6. swirl stop roller according to claim 5, characterized in that the locking sleeve (24) has a circumferential fixing ring (26) which is associated with the retaining tabs (18) for fixing the holding position.
    [7]
    7. twist stop roll according to one of claims 1 to 6, characterized in that the bearing sleeve (13) relative to the clamping sleeve (11) has a larger sleeve width.
    [8]
    8. spin-stop roller according to one of claims 1 to 7, -14 - • characterized in that the bearing sleeve (13), the clamping sleeve (11) and the or the holding webs (12) are formed from a plastic molded part , wherein the bearing sleeve (13) is positively connected to an internal rolling bearing (14).
    [9]
    9. swirl stop roller according to one of claims 1 to 8, characterized in that the ceramic body (1) on the circumference at least one radially inwardly projecting cam (21) which engages in a cam recess (22) on the circumference of the clamping sleeve (11).
    [10]
    10. swirl stop roller according to one of claims 1 to 9, characterized in that the ceramic body (1) consists of two zusammengrgten ceramic discs (2.1, 2.2), which in each case alternately on one end side a plurality of recesses (27.1, 27.2) and a plurality of axial tabs (3.1 , 3.2) with the outstanding guide teeth (4.1, 4.2), which interlock.
    [11]
    11. swirl stop roller according to claim 10, characterized in that the axial lugs (3.1, 3.2) of both ceramic discs (2.1, 2.2) respectively at the foot of the guide prongs (4.1, 4.2) have a raised guide web (5.1, 5.2), which together with the guide teeth (4.1, 4.2) form the thread running track (20). -15-
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    同族专利:
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    引用文献:
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    CN108775309A|2018-04-20|2018-11-09|浙江雅娜纺织有限公司|The bindiny mechanism of Overline ring and connecting rod in twisting machine|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102010050701|2010-11-06|
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