A YARN CREEL, ESPECIALLY FOR POWER LOOMS

Abstract: For feeding yarn to looms so-called yarn racks are used, on which are mounted protruding bobbin holders for receiving the yarn bobbins. In connection with large carpet looms there may be several thousand bobbins. The racks normally consist of welded frame structures with bobbin holders welded thereto, and it is a very demanding task to construct the racks and effect changes therein. By the invention the racks are constructed by means of profiled rails (2, 8) having undercut holding tracks (4, 10) for receiving clamp shoes (16), which may then be used for an easily movable securing of the yarn bobbin holders (22) and the profiled rails or the profiled lattice posts (8), respectively, on which posts the bobbin holders are placed. Such racks may be mounted and changed in an easy and cheap manner, without any specially qualified performance. The profiled rails may also be used for fixing and receiving guide tubes (32) for the yarn, and preferably rotatable bobbin holders (22) are used, whereby a large rack battery will take up far less space than when using fixed bobbin holders.

Description: A yarn creel, especially for power looms. The present invention relates to a so-called yarn creel for carrying yarn bobbin holders in connection with looms. With carpet looms, for example, there may be used several thousands of bobbins, which should be mounted orderly and reasonably close to the loom, and it is customary that the yarn creels used for this purpose are made as welded frameworks with bobbin holders welded thereto. It may happen, e.g. in connection with a change of production, that it would be desirable to rearrange the bobbin holders or increase or decrease the number of them, and traditionally this requires large working efforts; also, generally, the creels are expensive to build up. It is the purpose of the invention to provide a yarn creel construction, which is cheap to build up and easy to rearrange. The invention is based on a consequent use of pro¬ filed elements, partly for carrying the bobbin holders in a flexible manner and partly for holding the bobbin holder carrying profiles in an easily shif able manner, such that the creel can appear as a latticework with shiftable lattice rods, which are able, each, to carry the bobbin holders in a fixably displaceable manner in longitudinal profile creels. It is possible hereby in a very easy manner to change both the longitudinal and the transverse distance between the bobbin holders without using weldings, and the entire creel can be erected by a simple bolting together of standard profiles, which, e.g. when of aluminium, may be cheap to procure. More¬ over the same profiles may be used for a concealed hold¬ ing of such pipes which are normally used for guiding the single unreeled yarns from the bobbins to the loom, whereby the sight of the creel becomes clearer. Preferably the yarn creel is used for carrying bobbin holders of the rotatable type. Even though rotat¬ able bobbin holders are known, it is nevertheless common practice in creels of the discussed type to make use of rigid bobbin holders, the yarn from each bobbin being drawn off over the free front end of the bobbin. This involves that the yarn guiding pipe should have its mouthing located at a considerable distance in front of the bobbin, i.e. mounted on another creel portion, and hereby a considerable spacing should be provided between the opposed creels, this contributing to large space requirements for the creel system as a whole. With the use of rotatable bobbin holders these space requirements will be considerably reduced, because the pipe mouthing may be located next to the side of the bobbin, even relatively close to the bobbin surface, whereby the creel elements can be arranged with small mutual spac¬ ing. With the invention, moreover, it will be obtained that the pipe mouthings will be moved along automatical¬ ly, when a bobbin holder carrier rod is moved or shifted, as the pipes may be secured to the same rod, whereby a rearrangement of the rod will give no compli¬ cations with respect to an associated moving of the yarn pipe. An operatively important function of the rotatable bobbin holders will be that the yarn is unreeled without being twisted and without being scra ingly drawn over the bobbin surface, whereby both twisting failures and dust formation will be counteracted. In the following the invention will be described in more detail with reference fo the drawing, in which!- Fig. 1 is a perspective partial view of a yarn creel according to the invention. Fig. 2 is a cross section of a profiled carrier rod used therein. Fig. 3 is a schematic perspective view of a larger part of a complete yarn creel, and Figs. 4 and 5 are perspective views of modified structures. As shown in Fig. 1 a creel according to the inven¬ tion is built up on one or more longitudinal support profiles 2, which may be fastened to a carrier floor and provided with longitudinal undercut grooves 4 for recep¬ tion of holding heads for the fixing of foot portions 6 of upright carrier posts 8 made as profiled beams, pre¬ ferably in aluminium. These posts, as shown in Figs. 1 and 2, are profiled with undercut grooves 10 and 12 along all four sides of the rectangular profile and with a central tubular portion 14. In opposed grooves 10 are inserted holding shoes 16 for screw stub connection with respective polygonal nuts 18, which can thus, by means of a flat spanner, be screwed for fixation to the post 8, the nuts 18 being rigidly connected with an outwardly protruding shaft 20 carrying a rotatable holder bushing 22 for a yarn bobbin. This bushing is provided with outstanding spring members 24 for temporary holding of a core tube of a cylindrical or conical yarn bobbin 26, such that the latter will be supported in a rotatable manner together with the bushing 22. It will be understood that the carrier posts 8 can easily be released from the floor beam 2 and be moved to another position thereon by loosening and tightening of screws 28 on the foot portion 6, these screws cooperat¬ ing with slide ' shoes inserted into the grooves 4 in the beam 2. In a similar manner the bobbin holders 22 are easily replaceable along the grooves 10 in the posts 8. The entire creel system 2, 8 can be erected with the use of standard profile elements which are joinable without particularly qualified assistance, since all what is needed is to tighten the screws 28 and the bobbin holder parts 18 for mounting the bobbin holders in desired mutual positions. Outside the single yarn bobbins are provided re¬ spective pipe mouthings 30 of pipes 32 leading the re- spective yarns to a non-illustrated loom or a corre¬ sponding textile machine. These pipes 32, which may be thin plastic pipes, may be secured to the posts 8 by means of clamps 34 having projecting portions 36 for clamping the pipes and clamp portions for being tigh¬ tened against the outside of the profile 8. The pipes 32 themselves can be laid into the grooves 12 in the pro¬ file 8, whereby such pipes from many bobbins along the single posts 8 may lead upwardly in a concealed manner, thus providing for a "clean" appearance of the creel. At the top the pipes may leave the posts through an arched path towards the upper end of the next post 8, which can carry a transverse, pipe carrying bracket 38. This car¬ rier bracket may have a depending shaft 40 which is received in the central tubular portion 14 of the pro¬ file 8, in which the shaft may be height adjustably received. When the mouthings 30 of the pipes 32 are located next to the sides of the yarn bobbins it will be without any negative significance for the pipe mounting and for the space requirements that the posts 8 may carry both forwardly and rearwardly projecting yarn bobbins, and for that matter there could be mounted bobbin holders even on the remaining two sides of the posts. The bobbins will be particularly easy to change out, because they are readily accessible at their free front ends; an operator can move freely along the verti¬ cal layers of bobbins, because the draw-off of the yarn does not take place axially from the bobbins. Of course a suitable gangway spacing should be provided between the opposed creels, but nevertheless these creels may be placed relatively close to each other, such that the total space requirements for a large creel system will be modest compared with the prior art. It should be emphasized, however, that with respect to the mechanical build-up of the creel there will be no limitation as to the bobbin holders being of the rotat¬ able type. As indicated in Fig. 4 the posts 8 may be topwise interconnected by means of laths 42 for stabilizing the structure, whereby it is also made better possible to expand the system by an upper creel section. Even such a building-up can be added by non-skilled labourers, when suitable profiles and spanners are used. Already the use of the described posts, particular¬ ly with the rotatable bobbin holders and the pipes 32, will be advantageous even if the posts are mounted fixed in the floor. Optionally the profiles 8 may be mounted with horizontal orientation between or crosswise of suitable vertical holding beams. In Fig. 5 it is shown that the holding creels in the creel posts can be utilized for the holding of transverse arms 44, which may each carry two or even more bobbin holders. Hereby the yarn pipes 32 may then advantageously stretch along the middle of the posts, in connection with multi pipe holders 46 as shown, fastened to the posts. These pipe holders may act as holders for further yarn pipes 32 or for such pipe ends, which guide the yarn from immediately underlying yarn bobbins, and the pipe holders 46 may thus be produced as standard elements which can receive a higher or lower number of yarn pipes according to the requirements. Hereby a very stable mounting of the yarn pipes will be achievable even if they are located outside of the profile creels of the posts.

Claims: C L I M S : 1. A yarn creel with bobbin holders for weaving mills, built as a latticework with the bobbin holders mounted on the lattice elements, characterized in that the lattice elements are constituted by profiled rods having longitudinal tracks for releasable clamping fixing of the bobbin holders, said elements themselves preferably being secured in a fixably cross displace- able manner to holding tracks in e.g. floor or wall mounted holding beams. 2. A yarn creel according to claim 1, characterized in that the profiled rods are also provided with grooves for holding yarn guiding pipes or multi holders for such pipes. 3c A yarn creel according to claim 1 or 2, charac¬ terized in that associated yarn guiding pipes are fixed by means of holding members on the profiled rods in such positions, in which the inlet mouthings of the pipes are located next to the sides of the respective bobbins, and that the bobbin holders used in the creel are of the rotatable type. 4. A yarn holder according to claim 1, character¬ ized in that the lattice elements consist of profiled posts, which at their tops hold base portions of trans¬ verse carrier brackets for associated yarn guiding pipes.

Inventors: LINDE VAGN, LINDE, VAGN
Applicants: INT TEXTILE EQUIP, INTERNATIONAL TEXTILE EQUIPMENT ITE APS
Application year: 1989
Main classification: D02H1
IPC codes: B65H49, D02H1