Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H49/00—Unwinding or paying-out filamentary material; Supporting, storing or transporting packages from which filamentary material is to be withdrawn or paid-out
  • B65H49/02—Methods or apparatus in which packages do not rotate
  • B65H49/04—Package-supporting devices
  • B65H49/14—Package-supporting devices for several operative packages
  • B65H49/16—Stands or frameworks
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H57/00—Guides for filamentary materials; Supports therefor
  • B65H57/12—Tubes
• • D—TEXTILES; PAPER
  • D03—WEAVING
  • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
  • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
  • D03D49/04—Control of the tension in warp or cloth
  • D03D49/12—Controlling warp tension by means other than let-off mechanisms
  • D03D49/16—Warp supplied by creel
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2701/00—Handled material; Storage means
  • B65H2701/30—Handled filamentary material
  • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

• the present invention relates to a yarn storage device for a textile machine, comprising a carrying structure, a number of holders for holding respective yam stores and a number of yarn guide tubes, which are connected to the carrying structure, for guiding a respective yarn between a yam store and the textile machine, wherein each yarn guide tube comprises an end part with an inlet opening for the yam.
• the present invention relates in particular to a bobbin creel for a textile machine.
• a bobbin creel is for example provided so as to hold cylindrical or conical bobbins in an unwinding position and so as to unwind the textile yarn from each bobbin and pass it to a textile machine.
• the present invention also relates to a combination of such a bobbin creel and an associated textile machine.
• the textile yarns are guided from the respective bobbins in the bobbin creel to a textile machine in order to use said yarns during a yarn take-up or yam incorporation process.
• the textile machine is a weaving machine on which a weaving process is carried out.
• Such a bobbin creel often comprises large numbers of bobbin holders.
• the textile yarns are for example warp yarns which are incorporated into a fabric which is produced during the weaving process or pile warp yarns which are taken up in a fabric. As the yarn take-up process progresses, the required textile yarn is systematically unwound from the bobbins while the tension of the textile yam is controlled.
• each yarn In order to prevent these large numbers of textile yams from hindering one another during their displacement from the bobbin through the yarn storage device or coming into contact with one other or with other components of the yarn storage device, it is known for each yarn to be guided separately to the textile machine via a yarn guide tube.
• Such yarn guide tubes are usually designed as flexible cylindrical tubes composed of plastic. In order to hold the large numbers of yarn guide tubes together, these are held together for example by means of plastics binding straps and fastened in bundles to the carrying structure of the yarn storage device.
• This yarn guide is not very clear and placing it is onerous and time-consuming. It has also been found that the yarn guide tubes exhibit wear fairly quickly due to the friction of the yarn against the edges of the tubes at the inlet opening, which can cause jamming and damage to the yarn. To remedy this, it is known to provide a ring composed of a wear-resistant plastics material at the inlet of the yam guide tubes. Such a ring is for example described in patent publication WO 00/27 532 Al (figure 2, reference 66). Fastening wear-resistant rings to the large numbers of yarn guide tubes makes the placing of these known yarn guides even more onerous and time-consuming.
• the aim of the present invention is to remedy these disadvantages by providing a yarn storage device having a yarn guide device for guiding a large number of textile yarns in an unobstructed manner in an arrangement which is orderly and clear, which can be implemented using simple means and which can also be placed relatively quickly.
• the inlet openings of the tubes are in this case held at a fixed location in the yarn storage device.
• the location of the inlet opening of each tube can be selected such that a textile yarn can extend along an ideal path from a yarn store into the yam guide tube.
• the fastening elements may first be connected to the carrying structure at the desired locations, and the yam guide tubes may then be brought, at least by two, into cooperation with the fastening elements.
• the fastening element comprises closing means which can be brought into a connected state in order to hold the clamping means in the closed position and can be brought into a released state in order to be able to bring the clamping means back into the open position.
• the closing means are preferably designed in such a way that the connection and/or release thereof can be carried out manually, preferably without the use of a tool.
• the closing means are provided so as to be connected to one another by a click-fit connection.
• an additional advantage is that the fastening elements and the yarn guide tubes retained thereby are fastened at a fixed height such that at least a number of the top sides thereof can function as a carrying surface for other components of the yarn storage device.
• at least a number of said top sides function as carrying surface for other groups of guide tubes. This ensures an even greater degree of order and clarity of the numerous yarn guide tubes in the yam storage device.
• the fastening element comprises, on the inlet side, at least one separating wall in order for two yarns which run from their respective yam store to adjacent yarn passages of the same fastening element to be held separate from one another over part of their path.
• Each separating wall preferably abuts against the passage wall, between two adjacent yarn passages, such that two yams which run to adjacent yam passages of a fastening element are separated from one another over the last part of their path towards the fastening element.
• the fastening element preferably comprises such a separating wall between every two adjacent yam passages.
• the latter comprises a first group and a second group of yam guide tubes, the end parts of which are retained in a first fastening element and, respectively, in a second fastening element and which run from their respective fastening element to the textile machine, the first and the second fastening element are connected to the carrying structure, the yam guide tubes of the first group and the yam guide tubes of the second group converge over at least part of their length through the yarn storage device, wherein the yarn guide tubes of the second group are carried by the first fastening element and/or by the yarn guide tubes of the first group.
• the first fastening element and/or the groups of yam guide tubes retained thereby thus function as carrying surfaces for the yam guide tubes of the second group. This increases the speed of construction and ensures a very clear and orderly construction of the yarn guide device.
• the second group of yam guide tubes preferably lies on the first fastening element and/or on the yarn guide tubes of the first group.
• the first and the second fastening element are respectively spaced apart from the textile machine at a first distance and at a second distance, wherein the second distance is greater than the first distance.
• the yam guide tubes of the second group preferably run from the second fastening element to the first fastening element and preferably also lie on the first fastening element and furthermore also on the yarn guide tubes of the first group.
• the first and the second fastening element are preferably connected to the carrying structure at approximately the same height, such that the yarn guide tubes of the second group extend virtually horizontally between the second fastening element and the first fastening element.
• the yarn guide tubes of the first group preferably also extend in a virtually horizontal direction.
• the yarn guide tubes of the second group preferably lie on the yarn guide tubes of the first group.
• first fastening element and ‘second fastening element’ do not mean that ‘successive’ fastening elements are necessarily concerned. These expressions only indicate that there are various fastening elements, and do not rule out that one or more other fastening elements are also provided between the first and the second fastening element and connected to the carrying structure.
• a yarn storage device provided with yam stores, a textile machine and yarns which are guided via respective yam guide tubes from a respective yam store to the textile machine
• the first fastening element is fastened closer to the weaving machine than the second fastening element
• the first fastening element retains yarn guide tubes which are provided so as to guide yams which are unwound from first bobbins
• the second fastening element retains yarn guide tubes which are provided so as to guide yarns which are unwound from second bobbins
• the first bobbins are placed on holders which are provided in the carrying structure closer to the weaving machine than the holders on which the second bobbins are placed.
• a particular yam storage device comprises a first group of yarn guide tubes comprising at least two first subgroups of at least two yam guide tubes, the end parts of which are retained in respective first fastening elements, and a second group of yarn guide tubes comprising at least two second subgroups of at least two yarn guide tubes, the end parts of which are retained in respective second fastening elements, wherein the yarn guide tubes run from their respective fastening element to the textile machine, the first and the second fastening elements are connected to the carrying structure, and the yarn guide tubes of the first subgroups and the yarn guide tubes of the second subgroups converge over at least part of their length through the yarn storage device, wherein the yam guide tubes of the second subgroups are carried by the first fastening element and/or by yarn guide tubes of the first subgroups.
• the first and the second fastening elements are preferably connected to the carrying structure spaced apart from one another in the horizontal direction.
• the first fastening elements are preferably located closer to the textile machine than the second fastening elements.
• the various first fastening elements are preferably also spaced apart from one another in the horizontal direction.
• the various second fastening elements are preferably also spaced apart from one another in the horizontal direction.
• the yam storage device comprises a first and a second group of yam guide tubes, the end parts of which are retained in a first fastening element and, respectively, in a second fastening element and which run from their respective fastening element to the textile machine, the first and the second fastening element are connected to the carrying structure, the yam guide tubes of the first group and the yam guide tubes of the second group converge over at least part of their length through the yarn storage device, wherein the yarn guide tubes of the second group are carried by the first fastening element and/or by the yam guide tubes of the first group, and the yarn storage device also comprises a third group of yarn guide tubes, the end parts of which are retained in a third fastening element, the first fastening element, the second fastening element and the third fastening element, spaced apart from one another in this order in the horizontal direction, are connected to the carrying structure, wherein the yarn guide tubes of the third group lie over at least part of their length on the yarn guide tubes of the
• the second group of yam guide tubes thus also functions as carrying surface for the third group of yam guide tubes.
• the third group of yarn guide tubes may also form a carrying surface for a fourth group of yarn guide tubes, etc. It is thus possible for at least five or at least ten or at least fifteen or even at least twenty groups of yarn guide tubes to be stacked on top of one another.
• ‘second fastening element’ and ‘third fastening element’ also do not mean that ‘successive’ fastening elements are necessarily concerned. These expressions also only indicate that there are various fastening elements, and do not rule out that one or more other fastening elements are also provided between the second and the third fastening element and connected to the carrying structure.
• the third group of yam guide tubes preferably lies on the second group of yam guide tubes.
• fourth, fifth, sixth, .... K-th groups of yarn guide tubes are also provided, associated with a fourth, fifth, sixth, .... K-th fastening element, respectively, the fastening elements being spaced apart from one another in the horizontal direction, the distance between the textile machine and the fastening elements increases as their rank (4, 5, 6, ....K) increases, and the fourth, fifth, sixth, .... K-th groups of yam guide tubes each lie on the yam guide tubes of the group with the immediately lower rank (3, 4, 5, K-l).
• the fourth, fifth, sixth, .... K-th fastening elements are also not necessarily successive fastening elements. Stacks of 4, 5, 6, . . .K groups of yarn guide tubes lying on top of one another are thus formed.
• first and second, and preferably also third (and possibly more) fastening elements are connected at two or more different levels to the carrying structure at horizontal intermediate distances apart, and the respective associated first, second, and preferably also third (and possibly more) groups of yarn guide tubes are stacked in the same way. It is thus possible to form stacks of yam guide tubes at different levels on the carrying structure and to thus receive a large number of yarn guide tubes in a very orderly manner in a yarn storage device.
• the second and the third fastening element are respectively spaced apart from the textile machine at a second distance and at a third distance, wherein the third distance is greater than the second distance.
• the fastening element with a given rank is always further away from the textile machine than the fastening element with the immediately lower rank.
• a particular yam storage device comprises a first group of yarn guide tubes comprising at least two first subgroups of at least two yam guide tubes, the end parts of which are retained in respective first fastening elements, a second group of yarn guide tubes comprising at least two second subgroups of at least two yarn guide tubes, the end parts of which are retained in respective second fastening elements, and a third group of yarn guide tubes comprising at least two third subgroups of at least two yam guide tubes, the end parts of which are retained in respective third fastening elements, wherein the yam guide tubes run from their respective fastening element to the textile machine, the first and the second and the third fastening elements are connected to the carrying structure, and the yarn guide tubes of the first subgroups and the yarn guide tubes of the second subgroups and the yarn guide tubes of the third subgroups converge over at least part of their length through the yarn storage device, wherein the yarn guide tubes of the second subgroups are carried by the first fastening element and/or by yam guide tubes of the first
• the first fastening elements are preferably located closer to the textile machine than the second fastening elements.
• the second fastening elements are preferably located closer to the textile machine than the third fastening elements.
• the various third fastening elements are preferably also spaced apart from one another in the horizontal direction.
• the fastening elements are preferably fastened to the carrying structure of the yarn storage device at such a location that they are located close to a respective yarn store.
• each fastening element comprises two mutually displaceable clamping means which are connected to one another and which can be placed in a closed position and in an open position in order to retain or, respectively, release a group of yam guide tubes
• at least one of the clamping means comprises a projection
• at least one end part of a group of yarn guide tubes is retained between the clamping means, placed in the closed position, by virtue of the projection pressing against a wall of the yarn guide tube and exerting a retaining force thereon.
• the clamping means comprise two or more projections.
• the clamping means and each projection are provided in such a way that the wall of the yarn guide tube is locally deformed, and not pierced, by the projection.
• the projection preferably does not penetrate into the material of the tube.
• the projection preferably causes only a deformation or a local depression of the surface.
• the projection may, however, penetrate into the wall a little, but this is certainly without piercing the wall completely, and thus over a distance which is smaller than the wall thickness of the yarn guide tube. This is because burrs or edges or other obstacles that could obstruct the passage of the yam must not be formed in the interior space of the yarn guide tubes.
• the inner walls of the tubes must remain smooth and uninterrupted.
• each fastening element comprises a base part and a hinge part which is pivotably connected to the base part
• the base part comprises a receiving space in which the end parts of the yam guide tubes of a group or of a subgroup are received
• the hinge part and the base part comprise releasable closing means in order to hold the base part and the hinge part in the closed position
• the base part and/or the hinge part comprise at least one projection on the side facing towards the yarn guide tubes.
• Each fastening element is preferably also provided with a first coupling means, while the carrying structure comprises a plurality of second coupling means at different locations, said second coupling means being provided so as to be coupled to said first coupling means, each fastening element is connected to the carrying structure by coupling of the first coupling means of the fastening element to a second coupling means of the carrying structure, and the coupling is a click-fit connection which is established by a click-fit element which is provided on the first or the second coupling means elastically deforming and then springing back. In this way, the fastening elements can be fastened to the carrying structure very quickly.
• the carrying structure consists of vertical and horizontal profiles (preferably DIN rails) having openings at regular intermediate distances.
• the first coupling means is, for example, a deformable lip which is provided on the fastening element, and the second coupling means is preferably an opening in a profile of the carrying structure.
• the carrying structure comprises a number of openings at different locations such that the fastening elements can be fastened to the carrying structure at a multiplicity of different locations.
• Said carrying structure is preferably a bobbin creel or a part of a bobbin creel.
• it is (a part of) a bobbin creel for a weaving machine, and the bobbin creel preferably comprises a series of holders for holding cylindrical or conical bobbins in an unwinding position, wherein each bobbin is provided so as to unwind (in “defile”) the textile yam over the head side of the bobbin without rotating the bobbin.
• the carrying structure then for example comprises two opposite flanks which extend in the longitudinal direction thereof, and two groups of bobbin holders which are respectively provided on the one and the other flank and which are placed above and next to one another, and distributed over the flank, in such a way that they are accessible from that side of the bobbin creel which is situated along this flank in order for respective bobbins to be placed thereon or removed therefrom, and said groups of yarn guide tubes extend in the carrying structure in said longitudinal direction between the two groups of bobbin holders.
• the yarn storage device comprises at least one yam passage unit, wherein each yarn passage unit comprises a group of fastening elements, the respective yam passages of which are located next to and above one another so as to allow a respective yam to pass through in a common passage direction, and, on the one side of the yarn passage unit, each fastening element retains the end parts of a group or a subgroup of yam guide tubes such that the outlet opening of each yam guide tube is located opposite a respective yam passage of the fastening element, in order to bring the yams guided by the yarn guide tubes to the other side of the yarn passage unit via a respective yarn passage.
• each yarn passage unit are for example arranged in such a way that the yam passages, as seen in a transverse plane with respect to the passage direction, form a plurality of horizontal rows running below one another.
• the fastening elements are received in a substantially rectangular or square holder or carrier, wherein they form a kind of grid with a number of rows of a number of passage openings, said rows being placed below one another.
• Each yarn passage unit is, for example, also fastened to the carrying structure.
• the yarn storage device comprises two yarn passage units which are provided at an intermediate distance opposite to one another.
• the textile yams are not located in yarn guide tubes.
• This intermediate space is preferably located between the yam stores and the textile machine. Yarn changes can be carried out in this intermediate space by cutting a first textile yam with a first appearance and connecting the end of that portion of the first textile yam which runs to the textile machine to the end of a second textile yam with a second appearance, which is connected to a yarn store.
• the two ends are preferably connected by knots and the intermediate space between the two yarn passage units is referred to as an over-knot zone.
• a textile yam of a first color can be cut in the space between the two yam passage units and that end of the textile yarn of the first color which runs to the weaving machine can be connected, in this intermediate space, to the end of a textile yam of a second color which extends from the yarn store via a yarn guide tube into the intermediate space.
• the textile yarns of different colors must only be overknotted in the over-knot zone. The preparation in the bobbin creel need not be carried out while the machine is at a standstill, but can be carried out in advance.
• Fastening elements which are provided so as to retain four yarn guide tubes are preferably used in a yam passage unit.
• a respective device for increasing the yarn tension is preferably also provided opposite at least a number of the yarn passages of at least one yarn passage unit, wherein each device for increasing the yarn tension is provided so as to exert a force having a force component transverse to the passage direction of the yam on a yam extending through the associated yam passage, in order to increase the tension of the yarn.
• the yam passage unit comprises a number of fastening elements which comprise, opposite each passage of the fastening element, a respective device for increasing the yarn tension.
• said force is variable.
• the force may be variable in a continuous or stepwise manner.
• the device for increasing the yarn tension is preferably provided so as to passively increase the yam tension by a certain settable value, no account being taken of the current yam tension.
• each device for increasing the yarn tension comprises at least one weight element
• each fastening element comprises per yarn passage a holder for holding one or more weight elements
• the holder is provided such that a weight element placed in the holder rests on a yarn extending through the associated yarn passage and exerts a force thereon having a force component virtually transverse to the passage direction of the yarn.
• Each fastening element preferably comprises a housing provided with a holding space in which at least one, preferably a plurality of weight elements can be placed above one another.
• the weight element - the lowest weight element if a plurality are placed above one another in the holding space - then lies on the textile yarn exiting the associated yam passage or extending towards the yarn passage.
• the mass of the one or more weight elements results in a gravitational force which produces a small tension in the textile yarn.
• Each holding space is preferably bounded by a wall composed of a translucent material such that through the wall it is possible to see how many weight elements are located in the holding space, with the result that it is possible to make a quick estimate of the magnitude of the yarn tension produced thereby.
• each yarn passage unit preferably has a device for increasing the yarn tension
• each yam passage unit preferably comprises, for each yam passage, a respective holding space for holding one or more weight elements which is provided such that a weight element placed in the holder rests on a yarn extending through the associated yarn passage and exerts a force thereon having a force component virtually transverse to the passage direction of the yarn.
• the holding spaces are preferably located on the facing sides of the two yarn passage units.
• the holding spaces preferably form part of the fastening elements.
• a non-working position - that is to say a position in which the bobbin holder (2) is located at least partially outside the space of the carrying structure (1).

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
• Spinning Or Twisting Of Yarns (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=81854407

Family Applications (1)

Country Status (3)

Family Cites Families (5)

• 2022
  • 2022-05-20 BE BE20225386A patent/BE1030534B1/nl active IP Right Grant
• 2023
  • 2023-05-11 EP EP23728130.8A patent/EP4526239A1/de active Pending
  • 2023-05-11 WO PCT/IB2023/054883 patent/WO2023223154A1/en not_active Ceased

Also Published As

Similar Documents

Legal Events