EP0742304B1 - Yarn feeding device - Google Patents

Description

The invention relates to a device for Feeding threads, especially elastomer threads.

Especially with knitting and warp knitting machines the processing of elastomeric threads not from Coils of a creel are removed. Because of the The elasticity of the elastomer threads is rather necessary to drive the bobbins so that the threads Knitting points with a low and constant time Thread tension are supplied. For driving the spools of thread devices are in use that correspond to the corresponding Knitting or knitting machines in large numbers available.

The devices are on the knitting or knitting machines provided as separate units and with appropriate Clamp on a designated section attached to the machine frame. These devices will for existing knitting machines if required as a supplier part supplied and mounted on this. This is said to be as possible easy and quick way to happen.

DE 32 33 869 C2 describes a device for Feeding of elastomeric threads for knitting or warp knitting machines known the one on a machine frame too fastening and enclosing an interior having. The housing is penetrated by two drive rollers, each horizontally and parallel at a distance are arranged to each other. Each drive roller protrudes both out of the housing. There are roller bearings in the housing provided for the rotatable mounting of the drive rollers. To the A toothed belt pulley drives the drive rollers with a vertically oriented axis. This works through one bevel gear provided in the interior of the housing and a toothed belt on the two drive rollers. The The aforementioned toothed belt pulley arranged outside the housing serves to drive the entire device and is connected to a toothed belt that connects the toothed belt pulleys several on the knitting or knitting machine arranged devices drives.

The housing has lateral flat surfaces with openings which are penetrated by the drive rollers. In the Assembly of the device is done by the drive rollers push through these openings.

From the utility model with the publication number TW 187 394 is a device for feeding elastic Yarn threads are known in which two are parallel at a distance mutually arranged drive rollers in one solid molded holding body each via pairs of ball bearings are stored. The thickness of the solid body corresponds the thickness of two directly next to each other lying ball bearing. Each drive roller is in one piece formed with a toothed belt pulley, the side is arranged next to the solidly designed holder. On Toothed belt runs over the toothed belt pulleys of both drive rollers and thus serves to drive them.

Due to the tension of the driving unilaterally running Timing belt and the closely adjacent bearing of the drive rollers through the ball bearings is the alignment of the drive rollers limited.

A thread feeding device is from the utility model TW 82 606 known for feeding elastomeric yarn threads, which has a two-part housing. With the thread feeding device are two both ends of the Housing protruding drive rollers provided at a distance are rotatably mounted parallel to each other in the housing. For this purpose, each drive roller is equipped with a bearing device, a bearing plate and one in the immediate vicinity provided toothed belt pulley. The housing is divided along a plane on which the drive rollers stand vertically. One of the two housing parts has two cylindrical receiving pockets open on one side, which the Pick up bearing equipment on the drive rollers can. The pockets are on the edges three threaded holes each for fastening the end shields Mistake. A timing belt for synchronous driving of the two drive rollers runs alongside the bearing means over the pulleys. The timing belt is through covered the other part of the housing, no other Contains storage materials.

The above restrictions apply to this device. In addition, the pockets for receiving the Storage facilities designed in one piece and must be manufactured accordingly precisely.

Thread feeding devices are used in knitting and Warp knitting machines needed in large numbers. It is therefore to aim at the thread feeding devices in the required To have quality available at the cheapest possible price. In addition, it is desirable that the thread feeding devices assembled in the simplest possible way and can be taken apart.

A thread delivery device is known from EP 0351722 Known for textile machines that are used to unwind spools of thread serves. For this, two are parallel to each other at a distance arranged shafts provided at the same speed, are driven with the same direction of rotation. For storage the two shafts serve two spaced apart Holder with bearing recesses. In these are half-shell-shaped Recesses formed, which also half-shell-shaped recesses in corresponding insert parts assigned. The waves are as flexible waves educated. On the straight line, between the two holders, extending sections becomes the spool of thread stored. Which extends laterally beyond the sections extending parts of the flexible shafts go up to that next holder, where they again run parallel to each other are and serve to take up a spool of thread. On a machine ring are thus several such rolling devices arranged, each a fastening device for mounting on the machine frame or Have mounting ring. Regarding the assembly is however, consideration of the connection of the individual unwinding devices with each other through the flexible shaft to take.

Another unwinding device is from FR-A-1201645 known. This rolling device also has two holders extending parallel to each other or Holding parts, each with two bearing recesses Have a recording of a wave. The two so stored Shafts extend parallel to each other from the holder Holders and are with each other via a gear means as well connected to a drive motor. The unwinding device is used to unroll metal, paper or plastic rolls and is a device to be placed on the floor educated.

This results in the basis of the invention Task of creating a device for feeding threads, their bearing and drive rollers in good alignment are held to each other and the simple manufacture and enables easy assembly.

This task is accomplished by a feeding device of threads with the features of claim 1 solved.

The device for feeding threads has two Bearing rollers, at least one of which is driven is. The bearing rollers are at such a distance from each other arranged that the smallest distance of their peripheral surfaces is smaller than the outer diameter of the coil sleeve the take-off spool. In operation, the coil is from which the elastomeric thread is to be pulled off in the same direction running bearing rollers.

By separating the housing into two housing parts along a parting line that runs through the recesses, the housing is at least in the installed position Upper part and a lower part divided. This means that Parting line runs through or on the edge of openings, where the bearing rollers, at least one of which is driven, protrude from the housing. The bearing rollers can be directly from the parting line or with storage means provided in the recesses, each have an opening accessible from the parting line. The lower housing part in the position of use is such trained that it is possible to use the bearing rollers Storage means and with the gear means when open Insert the housing in the lower part of the housing. This is an assembly, i.e. assembling the device Insert the relevant parts in the lower housing part possible from the parting line. For complete assembly and to fix the position of the bearing and drive rollers Storage means and the gear means is in the housing only the other, i.e. to put the upper, housing part. The lower housing part serves as an assembly aid during assembly. They are not auxiliary devices for pressing in any parts in appropriate recordings or the like required.

A double-shell construction of the housing when separated along a going through said openings Parting line also makes it particularly simple and Tolerance-insensitive bearing seats for the storage means too create. Corresponding bearing seats are in both housing parts molded. One camp seat is closed a part from one housing part and to another Part bounded by the other housing part. It will possible to find the appropriate storage between the to clamp the upper and lower housing part without the required bearing seats with excessive accuracy should be made. It will be a possibility Manufacturing with not too tight tolerances created is less expensive than manufacturing with very little Tolerances. This enables cost advantages.

It can be the recess or the bearing seat of one trough-like recess formed, the one that Has gap through opening. With others Words the mouth of the recess lies in one Parting surface forming the recess extends into the housing wall. The housing parts are thereby essentially free of undercuts and can are cheaply manufactured as simple injection molded parts.

A simple housing shape is obtained when the Parting line lies at least in sections in one plane, which are both parallel to the axis of rotation of the first drive roller, as well as parallel to the axis of rotation of the second Drive roller is aligned. This section is included the bearing rollers, which is a clear design of the Housing parts, especially in this area. In addition, it is possible to complete the parting line to train what simplifies the housing shapes.

The bearing means taken up by the housing parts can be counteracted by external sealants Pollution must be protected. Also prevent such Sealing devices that wear, dust or lubricants leaks out of the housing and dirt causes as well as dust and contamination from get into the outside of the housing.

The housing can be in the aforementioned design easily made of plastic, especially as Manufacture injection molded part. The accuracy of injection molded Housing parts is for the intended use sufficient so that these parts thanks to the arrangement the parting line in the area of the storage means without rework are usable.

The holding devices for holding the storage means are preferably recesses provided in the housing parts, in which the storage means when closed Housing is clamped. Not just a radial one Fixation of the storage means, but also at to achieve a lateral fixation with low clamping forces, the recesses are preferably as receiving pockets educated. These have side walls that the Secure the bearing means in both axial directions. The However, pockets are accessible from the parting line, so that the bearing means when assembling the device simply placed in the pockets can.

The recesses in the housing parts are preferred trained differently. During the recesses one half of the housing take up the bearing means without play and thus determine their position, the recesses the other half of the housing be designed such that the Storage means a certain play in the direction of the parting line to have. The depth of the recess or pocket in question is however dimensioned so that the storage means finds its attachment in the recess. So that will achieved that the bearing means in the opposite of each other Recesses formed holding device for the storage medium is tight. Beyond that, however Connection of the housing parts with a certain tolerance possible. In any case, you don't have to in relation to each other be positioned exactly so that dowel pins or otherwise comparable adjustment means can be omitted.

The mounting of the storage means is special insensitive to production tolerances and safe with regard to the attachment of the storage means if the Holding devices are provided with spring means. This keep the bearing means free of play on the housing. The Spring means can be formed in one piece with the housing part Sections of the same.

An embodiment in which the assembly, i.e. assemble the device particularly easily leaves, has a housing which is formed in such a way is that the bearing rollers and the gear means by of a single housing part in relation to each other are completely fixed. This allows when assembling insert all parts in one housing part and thus assemble, the device by the Fitting of the second housing part fully assembled becomes.

The device can be designed so that the Bearing rollers only protrude from the housing on one side. It however, more spools of thread can be added and be handled when the bearing rollers are out on both sides protrude from the housing.

The bearing roller can be formed in one piece as well also be composed of several parts. In the multi-part embodiment has the bearing roller Center piece on which roller parts are attached on both sides and secured with clamping screws. In the one-piece embodiment is a simple good concentricity of the bearing rollers achieved. This is for the uniformity of the thread supply is important.

In one embodiment, the gear means engages between two bearings that support the bearing roller. In order to an even load on the bearings is achieved, what enables the device to work precisely.

The gear means is preferably a combined one Gear belt drive. Here is between a drive shaft, which protrudes from the housing with one end and on this end carries a pulley, and one rotatable in a bevel gearbox mounted on the primary shaft intended. This has a fixed to the drive shaft connected bevel gear, which is slidable with one of two arranged on the primary shaft and by means of Clamping screws combs fixed bevel gears. The direction of rotation The primary shaft is through the choice of the one with the bevel gear the meshing gear shaft possible. As Power transmission means between the primary shaft and the serves the bearing roller lying first of the primary shaft a strap. As a belt comes a round belt, a toothed belt, a flat belt or similar in question.

When using belts, especially timing belts, are tensioning devices to maintain the belt tension superfluous.

A toothed belt that is slip-free is advantageous works so that the first bearing roller a defined one Revs. A second toothed belt can be used as a power transmission means between the first bearing roller and the second bearing roller run. Compared to an embodiment with only one over the primary wave, the first and the second bearing roller running timing belt has this Advantage that larger wrap angles can be achieved, so that skipping even with lower belt tension and therefore not synchronous running of the bearing rollers fear. You can also use metal or plastic chains can be used for the drive.

The connection of the housing parts to each other can For example, by simple form-fitting fasteners be brought about. These are screw connections or also rest connections. Snap connections have the advantage that the assembly especially with appropriate design is simple and that the locking means in one piece with the Housing parts can be molded. The locking means can provided on a housing part locking tabs or other locking projections, which are in corresponding Engage recesses in the respective other housing part.

The housing parts can also be cohesive, i.e. by gluing or welding together be connected, with robust housing designs surrender.

Sensor means can be attached to the thread feeding device such as switches or the like for monitoring the coils or the thread run can be provided. These sensor means are, for example, from a rail provided on the housing worn with holding means for the unwinding Coils is provided. The sensor means are about electrical Lines to an electrical connection device connected to one for attaching the case fastening device provided on the machine frame is arranged. The electrical lines are formed by metal strips inserted into the housing, for example by molded or otherwise molded Holding knobs are fixed in the housing. The metal strips extend over the parting line, with the Parting line provided corresponding resilient contact means which are an electrical contact when putting on bring the housing parts together.

In one embodiment of the invention, an adjustable one Device for axially fixing the coils the bearing and drive rollers. This is preferably the above attached to a housing part Rail on which an optionally lockable Rider sits with a sling. The rider is fixed by means of a clamping screw, which also during the Operation of the thread feeding device is adjustable.

Fig. 1

eine Fadenzuliefervorrichtung mit zweigeteiltem Gehäuse für elastomere Garne zur Verwendung an Wirk- oder Strickmaschinen, in perspektivischer Darstellung,

Fig. 2

die Fadenzuliefervorrichtung nach Fig. 1 mit geöffnetem Gehäuse, in leicht schematisierter und perspektivischer Darstellung,

Fig. 3

die Fadenzuliefervorrichtung nach Fig. 1, mit einer Garnspule, in schematisierter Perspektivdarstellung,

Fig. 4

von dem Gehäuse der Fadenzuliefervorrichtung nach Fig. 1 aufgenommene Wellen und Getriebeelemente sowie zwei dem Antrieb der in Fig. 3 dargestellten Garnspule dienende Lager- und Antriebswalzen,

Fig. 5

das Gehäuse der Fadenzuliefervorrichtung nach Fig. 1, mit einem von dem Gehäuse aufgenommenen Wälzlager, in ausschnittsweiser und perspektivischer Darstellung,

Fig. 6

einen Gehäuseteil der Fadenzuliefervorrichtung nach Fig. 1, mit elektrischer Verdrahtung, in Draufsicht,

Fig. 7

die in dem Gehäuse der Fadenzuliefervorrichtung nach den Fig. 1 und 3 vorgesehene elektrische Leitungsführung, in schematischer Seitenansicht, ohne Gehäuseteil,

Fig. 8 bis 12

unterschiedliche Ausführungsformen von Gehäusen der Fadenzuliefervorrichtung mit von den Gehäusen aufgenommenen Wälzlagern, jeweils in schnittsweiser Schnittdarstellung.

In the drawing, an embodiment of the invention is shown. Show it:

Fig. 1

a thread feeding device with a two-part housing for elastomeric yarns for use on knitting or knitting machines, in a perspective view,

Fig. 2

1 with the housing open, in a slightly schematic and perspective view,

Fig. 3

1, with a yarn spool, in a schematic perspective view,

Fig. 4

1 accommodated shafts and gear elements as well as two bearing and drive rollers serving to drive the yarn spool shown in FIG. 3,

Fig. 5

1, with a roller bearing received by the housing, in a fragmentary and perspective view,

Fig. 6

1, with electrical wiring, in plan view,

Fig. 7

the provided in the housing of the thread feeding device according to FIGS. 1 and 3, electrical wiring, in a schematic side view, without housing part,

8 to 12

different embodiments of housings of the thread feeding device with roller bearings accommodated by the housings, each in a sectional sectional view.

In Fig. 1 is a supply device 1 for elastomer Yarns, but without a spool of yarn to be unwound. The supply device 1 is for an active or Knitting machine provided on the several similar Supply devices 1 are attached. The supply devices 1 then take one or more bobbins each and wind it up at a given speed from, so that the knitting points with the elastomeric yarn constant thread tension is supplied.

The supply device 1 has an L-shaped in plan view Case with rounded edges, whose Cross section is approximately square with rounded corners. On the L-shaped housing 3 is on its shorter leg an extension 5 with a clamp 6 for attachment formed on a machine frame not shown.

The housing 3 is divided into two at a parting line 8 and has a lower housing part 10 and an upper Housing part 11, each as one-piece plastic injection parts are trained. The parting line 8 lies in a plane that intersects the housing 3 approximately in the middle. If necessary, at least one housing part 10 with a Sealant, for example a one-piece molded lip be provided.

Two protrude laterally from the housing 3 each Bearing rollers 13, 14 held parallel to one another; 13 ', 14', the receiving and driving the to be unwound Yarn spools (Fig. 3) are used. Such a spool of thread with its circumferential surface on the in use position horizontal and rotating about an axis of rotation 12, 12 ' Bearing rollers 13, 14; 13 ', 14' placed such that it when the bearing rollers 13, 14; 13 ', 14' around their own coil axis rotates. The distance between the bearing rollers 13, 14 from each other is smaller than the outer diameter of a bobbin carrying the coil. The the same applies to the bearing rollers 13 ', 14'.

Parallel to the bearing rollers 13, 14; 13 ', 14', however at a distance from these, is in the position of use below the Housing 3 a rail 15 arranged by means of a Bracket 17 is carried by the housing part 10 and the 3, serves, for example, a coil limiter 19 to wear. This coil limiter 19 has one slidable on the rail 15 and by means of a For example, a clamping screw designed as a knurled screw 20 lockable tab, from which is approximately perpendicular to the Rail 15 a limiting rod 22 protrudes so far upwards that a lying on the bearing rollers 13, 14 in is kept in its axial direction. A corresponding one Rider sits on the underneath the bearing rollers 13 ', 14' arranged section. The coil limiter 19 enables easy adaptation to different spool widths and numbers.

The bearing rollers 13, 14; 13 ', 14' lead through limited by the housing and can be seen, for example, from FIG. 2 Interior 23, in the gear means for driving the Bearing rollers 13, 14 are arranged. The gear means 25 connect a drive wheel shown in FIG. 1, for example 27 with the bearing rollers 13, 14; 13 ', 14'. The drive wheel 27 is by means of a vertical in use, i.e. right angle to the bearing rollers 13, 14; 13 ', 14' oriented, and rotatably supported in Fig. 2 separately shown shaft and one on the knitting or knitting machine provided drive belt rotatably driven.

The transmission of power from the drive wheel 27 the bearing rollers 13, 14 serving gear means 25 and the storage of the bearing rollers 13, 14; 13 '14' on the housing 3 are shown in FIG. 2. In the shorter leg of how the housing 3 L-shaped interior 23, a primary shaft 29 is rotatably supported Bevel gear 31 carries. As is also shown in FIG. 4 emerges with a bevel gear 32 in meshing engagement, which in turn is driven by the drive wheel 27 The shaft is fixed against rotation. The shaft is 29 at both ends by means of ball bearings 34, 35 rotatably mounted in explained later and holding devices for the Ball bearings 34, 35 forming recesses 36a, 36b of the Housing 3 or the housing parts 10, 11 are added.

In the longer leg of the housing 3 are more Recesses 36c, 36d and 36e, 36f for receiving Ball bearings 41, 42, 43, 44 provided. Here are the Recesses 36c, 36d arranged such that they are at the ends of the bearing rollers 13, 13 'supporting shaft 46 (Fig. 4) store. The shaft 46 and the bearing rollers 13, 13 'are aligned parallel to the shaft 29.

The shaft 46 carries a toothed belt pulley 48 which via a toothed belt 50 from a seated on the shaft 29 Toothed belt pulley 52 is driven.

Correspondingly, one of the ball bearings 43, 44 Shaft 54 mounted, the end of the bearing and drive rollers 14, 14 'carries. The shaft 54 is with a toothed belt pulley 55 provided by a toothed belt 57 from the toothed belt pulley 48 seated on the shaft 46 is. As for the sake of simplicity not in Fig. 2nd but only shown in Fig. 4 can on the Shaft 29, another bevel gear 58 may be provided a reversal of the direction of rotation of the shaft 29 enables. To the bevel gears 31, 58 are displaceable on the shaft 29 arranged and can optionally with the bevel gear 32 in Intervention.

The in the housing parts 10, 11 for receiving the Ball bearings 34, 35, 41, 42, 43, 44 provided recesses 36a to 36f are the only difference uniformly formed that the housing 3 in the recesses 36c to 36f open to the outside, otherwise however is closed. Representing all exceptions 5 is a recess designated by 36 in FIG shown in the respective wall of the housing parts 10, 11 is formed. In the lower housing part 10 is a semi-cylindrical starting from the parting line 8 Receiving pocket 61 arranged, the radius of the outer radius a ball bearing to be received by the receiving pocket 61 corresponds, for which the ball bearing 41 is shown as an example is. The width of the recess measured across the wall corresponds to the width of the ball bearing 41, measured in its axial direction. Laterally, i.e. based on the Ball bearing 41 in the axial direction, the receiving pocket 61st through flat-trained, parallel to each other at a distance arranged cheeks 63, 64 delimits the ball bearing 41st cover up to its inner ring opening 66.

A corresponding receiving pocket 68 is in the formed upper housing part 11 and arranged such that with the housing 3 closed heel to the Receiving pocket 61 connects.

The housing 3 contains, as from FIGS. 6 and 7 emerges, electrical lines 69, 70 to connect provided between the delivery device 1 Sensors or switches and corresponding, in the field of Terminal 6 arranged electrical connection means 72nd to manufacture. The line 70 is connected to ground and is connected to the rail 15. Line 69 leads from the Terminal 6 to a connection for a not shown Stop switch. Both line 69 and the line 70 are formed by metal strips which in the housing 3 inserted and by one piece on the housing parts 10, 11 formed projections 74 are held.

The lines 69, 70 are guided over the parting line 8, the metal strips forming the lines 69, 70 are interrupted at the parting line 8 and each leak in spring tongues 76, 77. The spring tongues 76, 77 are resiliently biased towards each other and thus ensure the electrical contact. To contact no soldering work is required. The connection of lines 69, 70 to corresponding lines of Knitting or knitting machine takes place in the area of clamp 6 through plug or clamp connections without special measures, if the delivery device 1 on the active or Knitting machine is attached.

The device described so far works like follows:

The supply device 1 is by means of the clamp 6 on a machine frame of a knitting or knitting machine Installed. One of several similar supply devices 1 driving toothed belt is driven via the drive wheel 27 placed. On the bearing rollers 13, 14, 13 '14' in the indicated in Fig. 3 way bobbins with unwound Yarn put on. When driving the drive wheel 27 through the mentioned, but not shown, timing belt transmits the gear means 25 to the rotary movement the bearing rollers 13, 14, 13 '14', so that a thread 80 with given speed and direction becomes.

The assembly of the delivery device 1 from their Items is as follows:

In the lower housing part 10, as shown in FIG. 2 is shown, the gear means 25 and ball bearings 34, 35, 41, 42, 43, 44 inserted, after which the housing part 11 attached and secured to the housing part 10. To can screws or not shown locking means serve.

In detail, the shaft 29 with the bevel gear 31 and the toothed belt pulley 52, the toothed belt 50 placed on the toothed belt pulley 52 and the shaft 29 provided with their ball bearings 34, 35, and in the recesses 36a, 36b inserted. Next is the wave 46 with the toothed belt pulley 48 and the bearing rollers 13, 13 'provided. After pushing on the ball bearings 41, 42 and Placing the toothed belt 50, 57, the ball bearings 41, 42 inserted into the recesses 36c, 36d. Corresponding the bearing rollers 14, 14 'are mounted.

The whole process can be done without tools and without Special tools are made. It is simple and can be used by untrained personnel. With putting on of the upper housing part 11 is the delivery device 1 fully assembled.

The housing parts 10, 11 are injection molded parts, all necessary fastening devices for inclusion parts to be connected to them as one-piece parts Have projections or recesses provided therein. In particular, the recesses 36 are designed such that they can take the ball bearings without rework and that the ball bearings when assembling the housing parts 10, 11 are held stationary. In addition to the described receiving pockets 61, 68 alternative bearing seats 84a to 84d are provided, which are shown in FIGS 12 are shown.

In the embodiment shown in Fig. 8 are all instead of the recesses 36a to 36f of the housing 3 provided bearing seats 84a of the same design. By doing Housing part 10 is provided a pocket 85, the depth of which the diameter of the here representative for all ball bearings drawn ball bearing 41 matches. Bottom side the pocket 85 is semicircular, so that the Ball bearing 41 lies in the pocket 85 without play. Is axial the pocket 85 bounded by cheeks, not shown, the ball bearing 41 in the axial direction without noteworthy Keep game. The housing part 11 is in the Partition 8 is flat and has no recesses on. It holds the ball bearing 41 in the pocket 85. However, as with all of the exemplary embodiments, the bearing seat 84a (, b to e) between the housing parts 10, 11 educated.

The advantage of the above embodiment is that easy to assemble. The ball bearings are after Insert into the respective pocket 85 fixed laterally, see above that assembly is also easy when the timing belts 50, 57 (Fig. 2) should be tensioned. The Bearing seat 84a is also extremely insensitive against inaccurate assembly of the housing parts 10, 11 in relation on each other. The assignment of the housing parts 10, 11 to one another does not matter for the bearing seat 84a.

The parting line 8 delimits the bearing seat 84a on one side and at the same time forms its conclusion.

9 is another embodiment of a Bearing seat 84b shown. In this embodiment are both in the upper housing part 11 and in the lower housing part 10 recesses or pockets 86, 87 intended. The pocket 86 of the lower housing part 10 is semi-cylindrical, the radius being the radius of the outer ring of the depicted here again Ball bearing slightly exceeds 41. The one in the top Housing part 11 provided pocket 87 has a plan Bottom 88 on the outer ring of the ball bearing 41st is present. The distance from the floor 88 to the deepest Location of the pocket 86 corresponds to the outside diameter of the Ball bearing 41.

The recesses or pockets 86, 87, as in all bearing seats again have side cheeks, adjoin each other at the parting line 8, through the middle the ball bearing 41 goes.

With this bearing seat 84b there is a shift of Housing parts 10, 11 against each other possible without the seat to affect the bearing 41. That way you can production tolerances are also compensated for.

10 shows a further bearing seat 84c, which a resilient receptacle of the ball bearing 41st enables and thus an even greater tolerance insensitivity ensures. In the housing part 10 is one Receiving pocket 91 formed, which differs from the above described recesses and pockets of the housing part 10 differs in that it follows the ball bearing 41 Kind of a prism. The receiving pocket points to this 91 two substantially at right angles to each other standing, plan-shaped contact surfaces 93, 94 on which the ball bearing outer ring linear in two places is present.

A receiving pocket provided in the upper housing part 11 95 has a flat but resilient design Bottom 96 on which the outer ring of the ball bearing 41 is present. The bottom 96 is supported by the ball bearing 41 elastically deformed. The ball bearing 41 is in the bearing seat 84c recorded in three places. The resilient trained bottom 96 provides a secure fit of the Ball bearing 41 safe even with larger tolerances.

The resilient flexibility of the bottom 96 can be achieved by receive a corresponding lenticular recess 97 that are close to the floor 96 in the Housing part 11 is arranged. If necessary, in the Recess 97 a spring element 98 can be arranged.

A modified embodiment of a bearing seat 84d shows Fig. 11. In the housing part 10 is a receiving pocket 101 formed that the ball bearing 41 after Kind of a prism. The receiving pocket points to this 101 two substantially at right angles to each other standing, arched contact surfaces 103, 104, where the ball bearing outer ring rests in two places. This is due to the curvature of the contact surfaces 103, 104 Ball bearing 41 on the contact surfaces 93, 94 with slightly larger Areas.

A receiving pocket provided in the upper housing part 11 105 has a curved bottom 106 which the outer ring of the ball bearing 41 abuts. The ball bearing 41 is received in the bearing seat 84d at three locations. The radius of curvature of the bottom 106 exceeds that Diameter of the outer ring of the ball bearing 41 clearly. Tolerance insensitivity is thereby achieved.

Finally, a bearing seat 84e is shown in FIG. which comes close to the bearing seat 84b according to FIG. 9. A recess 107 provided in housing part 10 however, a larger diameter than the recess 86 in the embodiment of FIG. 9. In the housing part 11, a recess 108 is provided, the one has greater depth than the recess 87. The ball bearing 41 is in the recesses by means of an O-ring 111 107, 108 held. The O-ring 111 forms a spring element, that the ball bearing 41 manufacturing tolerances largely balances in the bearing seat 84e. The o-ring does not intervene in an intended, if necessary bottom groove shown in the recess 107.

An O-ring can also protrude from all others Embodiments of the delivery device 1 described can be provided as a spring or compensating element. The Diameters and depths of the corresponding bearing seats 84a to 84e are then to be determined appropriately.

Deviating from the exemplary embodiment described above, can both the bearing rollers 13, 13 'and the bearing rollers 14, 14 'are each formed in one piece his. It is also possible to use the bearing rollers 13, 13 '; 14, 14 'in one piece with the toothed belt pulleys 48, 55 to train. It will be a good run, one simple assembly and low manufacturing costs achieved.

Embodiments are also possible for which a housing part according to FIGS. 9 to 12 with a any other housing part of FIGS. 4 to 12 combined is.

A supply device for supplying elastomers Yarn in knitting or knitting machines has a two-part Housing on, on the bearing rollers at a distance are rotatably mounted parallel to each other. The housing encloses an interior, the gear means for driving houses at least one of the bearing rollers. The Transmission means transmit power from a drive wheel that is attached to a shaft protruding from the housing at least one bearing roller. The bearing rollers are over Ball bearings supported by corresponding ones in the housing provided bearing seats are held. The camp seats are in the one-piece housing parts molded, which is preferably produced by injection molding become. The parting line at which the housing parts adjoin each other, runs through all bearing seats, so that the ball bearings are held between the housing parts. By fastening the housing parts together at the same time fixed the ball bearings.

Claims (31)

1. Device for feeding or delivering yarns, particularly elastomer yarns,

   with at least one first bearing roller (13, 13') which is held stationary and is mounted on the bearing means (3) so as to be rotatable about a first axis of rotation (12), and

   with at least one first bearing roller (14, 14') which is held spaced from and parallel to the first bearing roller (13, 13') and is mounted on the bearing means (3) so as to be rotatable about a second axis of rotation (12'),

   with a drive arrangement for driving at least one of the bearing rollers (13, 13', 14, 14') in rotation, and

   with a fixing arrangement (6) for retaining the bearing means (3) on a machine frame,

   characterised in that the bearing means is constructed as a housing (3) which surrounds an inner chamber with a wall and which is divided along a parting line (8) into housing parts (10, 11), and

   that in the wall of at least one housing part (10, 11) cut-outs (36) are provided through which the bearing rollers (13, 13', 14, 14') extend and into which the bearing rollers (13, 13', 14, 14') can be inserted from the parting line (8) transversely with respect to the respective axis of rotation (12, 12'),

   that a fixing means is provided for connecting the housing parts (10, 11) to one another.
2. Device as claimed in Claim 1, characterised in that bearing seats (84) are formed by the cut-outs (36), and in these bearing seats bearing means (41, 42, 43, 44) are disposed by means of which the bearing roller (13, 13'; 14, 14') is mounted so as to be rotatable with little friction.
3. Device as claimed in Claim 1 or 2, characterised in that the cut-out (36) or the bearing seat (84) is formed by a trough-like cut-out which has an opening passing through the parting line (8).
4. Device as claimed in Claim 3, characterised in that the opening with its boundary lying in the parting line (8) defines surface regions which are aligned at an angle different from 90° with respect to the axis of rotation (12, 12').
5. Device as claimed in Claim 1, characterised in that the drive arrangement contains at least one gear means (25) by which the bearing roller (13, 13', 14, 14') is connected to a driving wheel (27).
6. Device as claimed in Claim 1, characterised in that the parting line (8) lies at least in part in a plane which is aligned parallel to at least one of the axes of rotation (12, 12') of the bearing rollers (13, 13'; 14, 14').
7. Device as claimed in Claim 1, characterised in that in a portion which contains the bearing rollers (13, 13'; 14, 14') the parting line (8) is disposed in a plane which is parallel not only to the axis of rotation (12) of the first bearing roller (13, 13') but also to the axis of rotation (12') of the second bearing roller (14, 14').
8. Device as claimed in Claim 1, characterised in that the parting line (8) provided between the housing parts (10, 11) is disposed overall in the plane which is parallel not only to the axis of rotation (12) of the first bearing roller (13, 13') but also to the axis of rotation (12') of a second bearing roller (14, 14').
9. Device as claimed in Claim 1, characterised in that the housing (3) is made from plastics material.
10. Device as claimed in Claim 1, characterised in that the housing parts (10, 11) are injection-moulded parts.
11. Device as claimed in Claim 2, characterised in that the bearing seats (84) are constructed in such a way that the bearing means (41) are received substantially without clearance by the bearing seats (84) with the housing closed.
12. Device as claimed in Claim 2, characterised in that the bearing seats (84) on one of the housing parts (10, 11) are constructed in such a way that they fix the spatial position of the bearing means (41, 42, 43, 44), whilst the retaining devices (36) on the other of the housing parts (10, 11) are constructed in such a way that the spatial co-ordination with the bearing means (41) is variable within limits.
13. Device as claimed in Claim 1 or 2, characterised in that the cut-outs (36) or bearing seats (84) are provided with spring means (96, 97) which act on the bearing rollers (13, 13'; 14, 14') or the bearing means (41) in such a way that the bearing rollers (13, 13'; 14, 14') or the bearing means (41) are retained without clearance on the housing (3).
14. Device as claimed in Claim 1, characterised in that the housing parts (10, 11) and the cut-outs (36) are constructed in such a way that the bearing rollers (13, 13'; 14, 14') are fixed completely with respect to one another by means of a housing part (10).
15. Device as claimed in Claim 1, characterised in that the bearing roller (13, 13'; 14, 14') passes through the housing (3) and projects with its two ends (13, 13'; 14, 14') out of the housing (3).
16. Device as claimed in Claim 1, characterised in that the bearing roller (13) is composed of a plurality of shaft portions (13, 46, 13').
17. Device as claimed in Claim 1, characterised in that the bearing roller (13, 13'; 14, 14') is constructed in one piece.
18. Device as claimed in Claim 5, characterised in that each bearing roller (13, 13'; 14, 14') has as bearing means two bearings (41, 42; 43, 44) between which the gear means (25) acts on the bearing roller (13, 13'; 14, 14').
19. Device as claimed in Claim 5, characterised in that the gear means (25) is constructed without slippage.
20. Device as claimed in Claim 5, characterised in that the gear means (25) contains at least one means which transmits power by means of friction.
21. Device as claimed in Claim 5, characterised in that the gear means (25) has a bevel gear (31, 32, 58) which acts between a drive shaft and a primary shaft (29) and makes it possible to reverse the direction of rotation.
22. Device as claimed in Claim 21, characterised in that the transmission of power from the primary shaft (29) to the first bearing roller (13, 13') takes place by way of a belt (50) or a chain.
23. Device as claimed in Claim 21, characterised in that the transmission of power from the first bearing roller (13, 13') to the second bearing roller (14, 14') takes place by way of a belt (57) or a chain.
24. Device as claimed in Claim 1, characterised in that the fixing means for connecting the housing parts (10, 11) to one another are positive fixing means.
25. Device as claimed in Claim 1, characterised in that the fixing means for connecting the housing parts (10, 11) to one another are latching means.
26. Device as claimed in Claim 1, characterised in that the housing parts (10, 11) are connected to one another by material engagement.
27. Device as claimed in Claim 1, characterised in that retaining means (15) are provided on which sensor means can be fixed for monitoring of the yarn running off.
28. Device as claimed in Claim 27, characterised in that the sensor means are connected by way of electrical lines (69, 70) to a connecting arrangement which is provided at the fixing arrangement (6) and is set up for connection to a connecting means disposed on a machine frame bearing the device (1).
29. Device as claimed in Claim 28, characterised in that the lines (69, 70) are metal strips which are laid in the housing part (10) and have on the parting line (8) contact tabs (76, 77) for contacting of metal strips which are provided on the respective other housing part (11).
30. Device as claimed in Claim 28, characterised in that the lines (69, 70) and the housing parts (10, 11) are constructed in such a way that the electrical contacting of the sensor means can be produced without soldering.
31. Device as claimed in Claim 1, characterised in that associated with the bearing rollers (13, 13'; 14, 14') is a retaining means (19) which limits the possibility of movement of the bobbin in the axial direction of the bearing rollers (13, 13'; 14, 14') and can be adjusted from the end face of the bearing rollers (13, 13'; 14, 14').

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