Abstract:
The invention relates to a device for coiling a thread or wire-type object ( 1 ) onto a winding jig ( 10 ) by means of a flyer ( 7 ) circling the winding jig ( 10 ). The object ( 1 ) is guided to the flyer ( 7 ) by a tube ( 2 ) and the flyer ( 7 ) is positioned on the tube ( 2 ) in rotating manner. Said winding jig ( 10 ) is coupled to a carrier sleeve ( 18 ) which is arranged approximately in the direction of the longitudinal axis (A) of the tube ( 2 ), at a distance (A) from the same, in order to pass the object ( 1 ). Said carrier sleeve ( 18 ) is associated with the fixed tube ( 2 ) in a fixed manner.

Description:
BACKGROUND OF THE INVENTION 
     The invention relates to an apparatus for winding up a thread-like or wire-like article onto a jig by means of a flyer that circles around the jig, the article being guided to the flyer through a tube and the flyer being rotatably mounted on the tube. 
     In many branches of industry, a thread-like or wire-like article must be wound up onto a jig. For example, it may be a textile thread. However, the present invention relates primarily to winding wire onto a jig, for example to form a coil. For this purpose, it is known for the wire to be guided to a flyer, which circles around the jig and, in the process, is moved along the jig, in order that the wire is applied to the jig in turns. In this case, the jig itself has its own support arm, which in turn has to be designed in such a way that it does not disrupt the movement of the flyer. This is complicated and needs a relatively great deal of space. 
     The present invention is based on the object of providing a device of the aforementioned type in which the space required is minimized and the guidance of the article to the jig is improved. 
     SUMMARY OF THE INVENTION 
     In order to achieve this object, the jig is coupled to a support sleeve, which is arranged approximately in the direction of the longitudinal axis of the tube, but maintains a distance from the latter for the article to be led through, the support sleeve being fixed in position with respect to the stationary tube. 
     This means that no separate mounting is provided for the jig any more, instead the jig is fixed with respect to the tube. There is therefore no longer any disruptive support arm which runs in the region of the flyer. 
     Furthermore, the distance covered by the article as far as the jig is reduced to a minimum. The winding speed can therefore be increased. In addition, the wear on an apparatus of this type is minimized, since there are only masses which revolve centrally, so that no torque is produced, only tilting torques or only friction plus mass moment of inertia, so that only the bearings have to be viewed as wearing parts. 
     The coupling of the support sleeve to the tube is also important. In the preferred exemplary embodiment, this is effected via a rotary ring, which is coupled to the flyer and corotates with the latter. This rotary ring likewise runs around the tube and the support sleeve, but in each case in an eccentric region. This means that this rotary ring completes an outwardly directed movement approximately perpendicular to the longitudinal axis of the tube, but with a distance being maintained between the tube and support sleeve. This is effected by the respective eccentric regions both of the tube and of the support sleeve being bounded by a revolving ring. 
     In order to lead the wire-like article through, the rotary ring has at least one opening, which is preferably located in the vicinity of a feed arm of the flyer. In this case, the flyer is formed substantially by this feed arm and a rotary element, it being possible for the position of the feed arm with respect to the jig to be varied. 
     The rotary element runs around the tube and also the support sleeve and, in this case, is driven by a drive. For instance, the drive movement is transmitted via a toothed belt to an internal gear, which sits on the rotary element. 
     However, in order that the rotating rotary ring can move with respect to the rotary element of the flyer, transversely with respect to the longitudinal axis, a coupling is provided which permits this movement. In the case of this coupling, a number of possibilities is also conceivable, the intention being for these possibilities and also further possibilities to be covered by the idea of the invention. 
     In a simple exemplary embodiment, the coupling can be effected via resilient elements. These resilient elements can be arranged directly between rotary ring and rotary element or else loaded in lateral tension, so to speak in the form of shear. 
     Other force stores, in particular spring elements, are also conceivable, against which the rotary ring is supported, loaded endwise or in lateral tension. 
     Also conceivable is the arrangement of two magnetic rings lying one inside the other, which, given appropriate polarity, ensures a connection during the rotation of rotary ring and rotary element. 
     In a preferred exemplary embodiment, the rotary element is to form an annular channel, in which a tumbler flange projecting from the rotary ring engages. Here, a mechanical connection between the tumbler flange and an annular channel inner wall can be effected by appropriate sliding pieces which slide in radial grooves. However, the arrangement of the aforementioned resilient elements or force stores is also conceivable here. 
     Furthermore, there is the possibility of arranging a coupling disk, which has flexible arms, in the annular channel between the tumbler flange and the annular channel inner wall. 
     A coupling disk of this type is known under the name “Controlflex” and on the market. 
     Also conceivable is the arrangement of a known parallel link mechanism, which is also called a “Schmidt coupling”. 
     A substantial advantage of the invention resides in the fact that, by means of the arrangement selected, no “wet mounting” of the rotatable elements has to be provided any more, instead that dry bearings can be selected. 
     Overall, the size of the entire apparatus can be reduced substantially, since the elements of the mounting of the jig are accommodated in the region of the tube or of the flyer. 
     Likewise, an increase in the speed of revolution is possible as a result of the simple configuration of the guide of the wire-like article to the jig. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Further advantages, features and details of the invention emerge from the following description of preferred exemplary embodiments and by using the drawing wherein: 
       FIG.  1 : shows a longitudinal section through an apparatus according to the invention for winding up a thread-like or wire-like article; 
       FIG.  2 : shows a longitudinal section through a further exemplary embodiment of an apparatus according to the invention according to  FIG. 1 ; 
       FIG.  3 : shows a cross section through parts of the apparatus according to  FIG. 2 ; 
       FIG.  4 : shows a plan view of a coupling disk; 
       FIG.  5 : shows an enlarged detail of a further exemplary embodiment of an apparatus according to the invention; 
       FIG.  6 : shows an enlarged detail of a further exemplary embodiment of an apparatus according to the invention. 
     
    
    
     DETAILED DESCRIPTION 
     An apparatus R according to the invention for winding up a thread-like or wire-like article  1  has a tube  2  which has a longitudinal axis A. This tube  2  is fixed in position, for which purpose retaining clamps  3  and  4  are indicated. 
     The article  1  runs into the tube  2  at one end  5  and out of the tube  2  at its other end  6  and is then guided to a flyer  7 , which has a feed arm  8 . From an opening  9  in the feed arm  8 , the article  1  is guided to a jig  10 , indicated dashed, onto which the article  1  is wound in stages in the exemplary embodiment. In order that this takes place, the feed arm  8  or the opening  9  can be displaced with respect to the jig  10  along the double arrow  11 , the corresponding displacement device not being shown here. However, it is commercially available and can be, for example, an appropriate spindle or the like. 
     The feed arm  8  is located on a rotary element  12  which, in the exemplary embodiment shown, is assembled from a plurality of parts which, for reasons of clarity, are not specifically illustrated. In any case, the rotary element  12  is supported with respect to the tube  2  via bearings  13 . 1  and  13 . 2  and, in this way, rotates around the stationary tube  2 . These bearings are located between the retaining clamp  4  and a ring  14  projecting radially from the tube  2 . 
     The rotation of the rotary element  12  is effected by an internal gear  15 , which is connected to the rotary element  12  by a screw  16 . The internal gear  15  is wrapped around, at least partly, by a toothed belt, which is not specifically shown and which in turn is connected to an appropriate drive. 
     In order to allow the thread-like or wire-like article  1  through, the rotary element  12  has an opening  17  close to the feed arm  8 . 
     The jig  10  is detachably fixed to a support sleeve  18 , which shares the longitudinal axis A with the tube  2 . The rotary element  12  of the flyer  7  is in turn supported against this support sleeve  18  by two bearings  19 . 1  and  19 . 2 , which ensure that the rotary element  12  also runs around the support sleeve  18 . These bearings  19 . 1  and  19 . 2  are retained between a clamping ring  20  and a ring  21  which in turn projects radially from the support sleeve  18 . In order to fix the clamping ring  20 , a screw  22  is provided. 
     The support sleeve  18  maintains a distance a from the tube  2 , the support sleeve  18  being fixed with respect to the tube  2  by a rotary ring  23 . This rotary ring  23  is connected to the rotary element  12  via a coupling  24  described further below and rotates with the rotary element  12 . Here, it is supported at one end with respect to the tube  2  by two bearings  25 . 1  and  25 . 2  and at the other end with respect to the support sleeve  18  by a bearing  26 . In these regions, in which the bearings  25 . 1  and  25 . 2  and, respectively,  26  are supported with respect to the tube  2  and the support sleeve  18 , the corresponding wall region  27  and  28  is eccentric or cam-shaped with respect to the longitudinal axis A. This means that the wall regions  27 ,  28  which lie diagonally opposite each other have a different wall thickness. As a result, the rotary ring  23  makes a tumbling movement or moves perpendicular to the longitudinal axis A. However, this also means at the same time that the support sleeve  18  is held in the position of the tube  2  and, since the tube  2  is fixed, likewise remains fixed. 
     The bearings  25 . 1  and  25 . 2  are caught between the ring  14  and a Seger ring  29 . The bearing  26  is located between an inner ring  30  projecting from the rotary ring  23  and the ring  21  mentioned above. 
     Furthermore, at least one opening  31 , through which the article  1  is guided, is also provided in the rotary ring  23 . This opening  31  preferably corresponds with the opening  17  in the rotary element  12 . 
     The coupling  24  must ensure that, during the common rotation of rotary ring  23  and rotary element  12 , the rotary ring  23  can move radially with respect to the rotary element  12 . In the exemplary embodiment shown in  FIG. 1 , the rotary element forms an annular channel  32 , into which a tumbler flange  33  projects out from the rotary ring  23 . This tumbler flange  33 , as shown in  FIG. 5 , can then be supported against a base  34  of the annular channel  32  by a resilient element  35 . For instance, this resilient element  35  can be a rubber ring. 
     Furthermore, a resilient element  35 . 1  could also be inserted laterally between the tumbler flange  33  and an annular channel wall  36 , as indicated dashed. 
     In another exemplary embodiment of the invention, according to  FIG. 6 , there are any desired force stores, for example springs  37 , between the tumbler flange  33  and the annular channel wall  36 . 
     In an exemplary embodiment not shown, consideration is given to arranging sliding pieces between the tumbler flange  33  and the annular channel wall  36 , said sliding pieces being guided radially in grooves. This also ensures that, firstly, the rotary ring  23  is carried along during the rotation of the rotary element  12 , but, secondly, that the transverse movement of the rotary ring  23  is not hampered. 
       FIG. 1  indicates that, between the tumbler flange  33  and the annular channel wall  36 , there is a disk  38 , which is illustrated in more detail in FIG.  4 . This disk  38  has flexible arms  39 , which are connected firstly to the tumbler flange  33  and secondly to the annular channel wall  36 . They also permit the aforementioned movement. 
     A further possible coupling between rotary element  12  and rotary ring  23  is indicated in  FIGS. 2 and 3 . In this case, it is a magnetic coupling. A magnetic ring  40  is fitted to the rotary ring  23  and interacts with a magnetic ring  41  in the rotary element  12 . By means of an appropriate polarity change and a pole assignment, it is ensured that the two rings  40  and  41  do not rotate with respect to each other.